--- /dev/null
+# @(#)Makefile.inc 8.2 (Berkeley) 2/21/94
+#
+CFLAGS+=-D__DBINTERFACE_PRIVATE
+
+.include "${.CURDIR}/db/btree/Makefile.inc"
+.include "${.CURDIR}/db/db/Makefile.inc"
+.include "${.CURDIR}/db/hash/Makefile.inc"
+.include "${.CURDIR}/db/man/Makefile.inc"
+.include "${.CURDIR}/db/mpool/Makefile.inc"
+.include "${.CURDIR}/db/recno/Makefile.inc"
--- /dev/null
+# @(#)Makefile 8.9 (Berkeley) 7/14/94
+
+LIBDB= libdb.a
+OBJ1= hash.o hash_bigkey.o hash_buf.o hash_func.o hash_log2.o hash_page.o \
+ hsearch.o ndbm.o
+OBJ2= bt_close.o bt_conv.o bt_debug.o bt_delete.o bt_get.o bt_open.o \
+ bt_overflow.o bt_page.o bt_put.o bt_search.o bt_seq.o bt_split.o \
+ bt_utils.o
+OBJ3= db.o
+OBJ4= mpool.o
+OBJ5= rec_close.o rec_delete.o rec_get.o rec_open.o rec_put.o rec_search.o \
+ rec_seq.o rec_utils.o
+
+MISC=
+
+${LIBDB}: ${OBJ1} ${OBJ2} ${OBJ3} ${OBJ4} ${OBJ5} ${MISC}
+ rm -f $@
+ ar cq $@ \
+ `lorder ${OBJ1} ${OBJ2} ${OBJ3} ${OBJ4} ${OBJ5} ${MISC} | tsort`
+ ranlib $@
+
+clean:
+ rm -f ${LIBDB} ${OBJ1} ${OBJ2} ${OBJ3} ${OBJ4} ${OBJ5} ${MISC}
+
+OORG= -O
+CL= ${CC} -c -D__DBINTERFACE_PRIVATE ${OORG} -I. -Iinclude
+
+hash.o: ../../hash/hash.c
+ ${CL} -I../../hash ../../hash/hash.c
+hash_bigkey.o: ../../hash/hash_bigkey.c
+ ${CL} -I../../hash ../../hash/hash_bigkey.c
+hash_buf.o: ../../hash/hash_buf.c
+ ${CL} -I../../hash ../../hash/hash_buf.c
+hash_func.o: ../../hash/hash_func.c
+ ${CL} -I../../hash ../../hash/hash_func.c
+hash_log2.o: ../../hash/hash_log2.c
+ ${CL} -I../../hash ../../hash/hash_log2.c
+hash_page.o: ../../hash/hash_page.c
+ ${CL} -I../../hash ../../hash/hash_page.c
+hsearch.o: ../../hash/hsearch.c
+ ${CL} -I../../hash ../../hash/hsearch.c
+ndbm.o: ../../hash/ndbm.c
+ ${CL} -I../../hash ../../hash/ndbm.c
+
+bt_close.o: ../../btree/bt_close.c
+ ${CL} -I../../btree ../../btree/bt_close.c
+bt_conv.o: ../../btree/bt_conv.c
+ ${CL} -I../../btree ../../btree/bt_conv.c
+bt_debug.o: ../../btree/bt_debug.c
+ ${CL} -I../../btree ../../btree/bt_debug.c
+bt_delete.o: ../../btree/bt_delete.c
+ ${CL} -I../../btree ../../btree/bt_delete.c
+bt_get.o: ../../btree/bt_get.c
+ ${CL} -I../../btree ../../btree/bt_get.c
+bt_open.o: ../../btree/bt_open.c
+ ${CL} -I../../btree ../../btree/bt_open.c
+bt_overflow.o: ../../btree/bt_overflow.c
+ ${CL} -I../../btree ../../btree/bt_overflow.c
+bt_page.o: ../../btree/bt_page.c
+ ${CL} -I../../btree ../../btree/bt_page.c
+bt_put.o: ../../btree/bt_put.c
+ ${CL} -I../../btree ../../btree/bt_put.c
+bt_search.o: ../../btree/bt_search.c
+ ${CL} -I../../btree ../../btree/bt_search.c
+bt_seq.o: ../../btree/bt_seq.c
+ ${CL} -I../../btree ../../btree/bt_seq.c
+bt_split.o: ../../btree/bt_split.c
+ ${CL} -I../../btree ../../btree/bt_split.c
+bt_stack.o: ../../btree/bt_stack.c
+ ${CL} -I../../btree ../../btree/bt_stack.c
+bt_utils.o: ../../btree/bt_utils.c
+ ${CL} -I../../btree ../../btree/bt_utils.c
+
+db.o: ../../db/db.c
+ ${CL} ../../db/db.c
+
+mpool.o: ../../mpool/mpool.c
+ ${CL} -I../../mpool ../../mpool/mpool.c
+
+rec_close.o: ../../recno/rec_close.c
+ ${CL} -I../../recno ../../recno/rec_close.c
+rec_delete.o: ../../recno/rec_delete.c
+ ${CL} -I../../recno ../../recno/rec_delete.c
+rec_get.o: ../../recno/rec_get.c
+ ${CL} -I../../recno ../../recno/rec_get.c
+rec_open.o: ../../recno/rec_open.c
+ ${CL} -I../../recno ../../recno/rec_open.c
+rec_put.o: ../../recno/rec_put.c
+ ${CL} -I../../recno ../../recno/rec_put.c
+rec_search.o: ../../recno/rec_search.c
+ ${CL} -I../../recno ../../recno/rec_search.c
+rec_seq.o: ../../recno/rec_seq.c
+ ${CL} -I../../recno ../../recno/rec_seq.c
+rec_utils.o: ../../recno/rec_utils.c
+ ${CL} -I../../recno ../../recno/rec_utils.c
+
+memmove.o:
+ ${CC} -DMEMMOVE -c -O -I. -Iinclude clib/memmove.c
+mktemp.o:
+ ${CC} -c -O -I. -Iinclude clib/mktemp.c
+snprintf.o:
+ ${CC} -c -O -I. -Iinclude clib/snprintf.c
--- /dev/null
+# @(#)README 8.6 (Berkeley) 6/20/94
+
+This is the area for building the libdb library. There are a number
+of porting directories, for various architecture/OS combinations. Pick
+the one that's closest to yours and try "make". For the rest of this
+file, I'll use "MACH" as a fake architecture/OS name.
+
+To PORT to a new system, create the following subdirectories and
+symbolic links.
+
+ mkdir MACH (for example: mkdir sunos.4.0)
+ cd MACH
+ cp ../Makefile .
+ chmod 664 Makefile
+ ln -s ../clib .
+ mkdir include
+ ln -s include sys
+ cd include
+ ln -s ../../include/*.h .
+ rm compat.h
+ cp ../../include/compat.h .
+ chmod 664 compat.h
+ cd ..
+
+The basic idea is that you now have a local area that you can modify.
+In particular, you have local copies of the Makefile and the include
+file compat.h. Read through the Makefile and compat.h and make whatever
+changes are appropriate to your system. If there's an architecture
+that's close to yours, you probably should diff the Makefile and
+compat.h in that tree against the standard ones and see what changes
+were necessary, as they're probably necessary for you as well. Then,
+enter "make" and see what happens!
+
+There are several subroutines that are found in POSIX 1003.2, ANSI
+C, or 4.4BSD that you may not have. Once you get libdb.a to compile,
+go through the list of undefined routines and add entries to the MISC
+line in the Makefile as necessary.
+
+If you have to add some functions that are missing (and which aren't
+in the PORT/clib directory), please don't add them in the PORT/clib
+directory. Add them in a MACH/local directory, and add lines of the
+form:
+
+ function.o: local/function.o
+ ${CL} -Ilocal local/function.o
+
+to your local Makefile.
+
+Hopefully, over time, we'll develop a set of system directories that
+are known to work. If you send me the changes that were necessary to
+make your system work, this will happen much more quickly.
+
+In some of the system directories, you'll see a file named OTHER_PATCHES.
+This is a set of patches which you'll have to make from the top-level db
+directory to get libdb.a to run on this system:
+
+ cd ..
+ patch < PORT/MACH/OTHER_PATCHES
+
+If patch prompts you for the name of the file to modify (some versions
+of patch don't figure it out on their own) use the file name which patch
+displays.
+
+Some knobs you may have to turn:
+
+In include/db.h:
+ Before attempting to build libdb, you should look through the
+ db.h file, and adjust it as necessary for your system. The
+ only adjustments that you should need to make are for the
+ fixed sized typedef's at the top of the file. Make sure they're
+ right for your system.
+
+In include/compat.h:
+ Before attempting to build libdb, you should look through the
+ compat.h file, and adjust it as necessary for your system.
+ It's possible to use the #ifndef construct to figure out if a
+ #ifdef has been set, but C provides no similar method to figure
+ out if a typedef has been done. Your compile errors should
+ give you a good indication of which ones you need.
+
+You may see warning messages about illegal pointer combinations. You may
+also see lots of warning messages about #define's being redefined. These
+can mostly be ignored. I usually ignore warning messages until something
+doesn't work. Some systems produce thousands of lines of useless warnings,
+bless their little hearts.
+
+The other parts of the PORT directory are as follows:
+
+ The directory PORT/clib is a set of functions that the 4.4BSD
+ C library had and which your system may not have. They are
+ added to the MISC line of the Makefile if they aren't defined
+ when you try and load libdb.a.
+
+ The directory PORT/include is header files that the 4.4BSD
+ system had which your system may not have. There is also
+ one really important extra one, named compat.h, which is a
+ set of compatibility work-arounds that you'll almost certainly
+ have to copy and modify for a new system.
+
+ The symbolic link PORT/sys points to the PORT/include directory
+ so that includes of the form <sys/include.h> work.
+
+Some of the more common portability problems:
+
+ If you don't have:
+
+ memmove(3): add memmove.o
+ mkstemp(3): add mktemp.o
+
+ ... to the MISC line in the Makefile.
+
+ If you don't have snprintf/vsnprintf(3), add snprintf.o to the
+ MISC line in the Makefile. This workaround depends on your
+ system having vsprintf(3) -- if you don't, there's no workaround
+ other than changing the source code to not use the snprintf calls.
+ If you have to make that change, check to see if your vsprintf
+ returns a length or a char *; if it's the latter, make sure you
+ set VSPRINTF_CHARSTAR in the MACH/include/compat.h file.
+
+Installing the DB library:
+
+ The Makefile builds a C library named libdb.a. This file needs
+ to be installed in a place where the loader will automatically
+ look for it (or, if you're building it for a single project,
+ wherever that project's Makefile loads it from).
+
+ In addition, the header file PORT/include/db.h must be copied to
+ a directory (often /usr/include/) where programs that use the
+ db package can include it in their source. (If you intend to use
+ the ndbm interface to libdb, you'll need to copy the header file
+ PORT/include/ndbm.h as well.)
--- /dev/null
+# @(#)Makefile 8.9 (Berkeley) 7/14/94
+
+LIBDB= libdb.a
+OBJ1= hash.o hash_bigkey.o hash_buf.o hash_func.o hash_log2.o hash_page.o \
+ hsearch.o ndbm.o
+OBJ2= bt_close.o bt_conv.o bt_debug.o bt_delete.o bt_get.o bt_open.o \
+ bt_overflow.o bt_page.o bt_put.o bt_search.o bt_seq.o bt_split.o \
+ bt_utils.o
+OBJ3= db.o
+OBJ4= mpool.o
+OBJ5= rec_close.o rec_delete.o rec_get.o rec_open.o rec_put.o rec_search.o \
+ rec_seq.o rec_utils.o
+
+MISC= snprintf.o
+
+${LIBDB}: ${OBJ1} ${OBJ2} ${OBJ3} ${OBJ4} ${OBJ5} ${MISC}
+ rm -f $@
+ ar cq $@ \
+ `lorder ${OBJ1} ${OBJ2} ${OBJ3} ${OBJ4} ${OBJ5} ${MISC} | tsort`
+ ranlib $@
+
+clean:
+ rm -f ${LIBDB} ${OBJ1} ${OBJ2} ${OBJ3} ${OBJ4} ${OBJ5} ${MISC}
+
+OORG= -O
+CL= ${CC} -c -D__DBINTERFACE_PRIVATE ${OORG} -I. -Iinclude
+
+hash.o: ../../hash/hash.c
+ ${CL} -I../../hash ../../hash/hash.c
+hash_bigkey.o: ../../hash/hash_bigkey.c
+ ${CL} -I../../hash ../../hash/hash_bigkey.c
+hash_buf.o: ../../hash/hash_buf.c
+ ${CL} -I../../hash ../../hash/hash_buf.c
+hash_func.o: ../../hash/hash_func.c
+ ${CL} -I../../hash ../../hash/hash_func.c
+hash_log2.o: ../../hash/hash_log2.c
+ ${CL} -I../../hash ../../hash/hash_log2.c
+hash_page.o: ../../hash/hash_page.c
+ ${CL} -I../../hash ../../hash/hash_page.c
+hsearch.o: ../../hash/hsearch.c
+ ${CL} -I../../hash ../../hash/hsearch.c
+ndbm.o: ../../hash/ndbm.c
+ ${CL} -I../../hash ../../hash/ndbm.c
+
+bt_close.o: ../../btree/bt_close.c
+ ${CL} -I../../btree ../../btree/bt_close.c
+bt_conv.o: ../../btree/bt_conv.c
+ ${CL} -I../../btree ../../btree/bt_conv.c
+bt_debug.o: ../../btree/bt_debug.c
+ ${CL} -I../../btree ../../btree/bt_debug.c
+bt_delete.o: ../../btree/bt_delete.c
+ ${CL} -I../../btree ../../btree/bt_delete.c
+bt_get.o: ../../btree/bt_get.c
+ ${CL} -I../../btree ../../btree/bt_get.c
+bt_open.o: ../../btree/bt_open.c
+ ${CL} -I../../btree ../../btree/bt_open.c
+bt_overflow.o: ../../btree/bt_overflow.c
+ ${CL} -I../../btree ../../btree/bt_overflow.c
+bt_page.o: ../../btree/bt_page.c
+ ${CL} -I../../btree ../../btree/bt_page.c
+bt_put.o: ../../btree/bt_put.c
+ ${CL} -I../../btree ../../btree/bt_put.c
+bt_search.o: ../../btree/bt_search.c
+ ${CL} -I../../btree ../../btree/bt_search.c
+bt_seq.o: ../../btree/bt_seq.c
+ ${CL} -I../../btree ../../btree/bt_seq.c
+bt_split.o: ../../btree/bt_split.c
+ ${CL} -I../../btree ../../btree/bt_split.c
+bt_stack.o: ../../btree/bt_stack.c
+ ${CL} -I../../btree ../../btree/bt_stack.c
+bt_utils.o: ../../btree/bt_utils.c
+ ${CL} -I../../btree ../../btree/bt_utils.c
+
+db.o: ../../db/db.c
+ ${CL} ../../db/db.c
+
+mpool.o: ../../mpool/mpool.c
+ ${CL} -I../../mpool ../../mpool/mpool.c
+
+rec_close.o: ../../recno/rec_close.c
+ ${CL} -I../../recno ../../recno/rec_close.c
+rec_delete.o: ../../recno/rec_delete.c
+ ${CL} -I../../recno ../../recno/rec_delete.c
+rec_get.o: ../../recno/rec_get.c
+ ${CL} -I../../recno ../../recno/rec_get.c
+rec_open.o: ../../recno/rec_open.c
+ ${CL} -I../../recno ../../recno/rec_open.c
+rec_put.o: ../../recno/rec_put.c
+ ${CL} -I../../recno ../../recno/rec_put.c
+rec_search.o: ../../recno/rec_search.c
+ ${CL} -I../../recno ../../recno/rec_search.c
+rec_seq.o: ../../recno/rec_seq.c
+ ${CL} -I../../recno ../../recno/rec_seq.c
+rec_utils.o: ../../recno/rec_utils.c
+ ${CL} -I../../recno ../../recno/rec_utils.c
+
+memmove.o:
+ ${CC} -DMEMMOVE -c -O -I. -Iinclude clib/memmove.c
+mktemp.o:
+ ${CC} -c -O -I. -Iinclude clib/mktemp.c
+snprintf.o:
+ ${CC} -c -O -I. -Iinclude clib/snprintf.c
--- /dev/null
+../clib
\ No newline at end of file
--- /dev/null
+../../include/cdefs.h
\ No newline at end of file
--- /dev/null
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)compat.h 8.13 (Berkeley) 2/21/94
+ */
+
+#ifndef _COMPAT_H_
+#define _COMPAT_H_
+
+#include <sys/types.h>
+
+/*
+ * If your system doesn't typedef u_long, u_short, or u_char, change
+ * the 0 to a 1.
+ */
+#if 0
+typedef unsigned char u_char; /* 4.[34]BSD names. */
+typedef unsigned int u_int;
+typedef unsigned long u_long;
+typedef unsigned short u_short;
+#endif
+
+/* If your system doesn't typedef size_t, change the 0 to a 1. */
+#if 0
+typedef unsigned int size_t; /* POSIX, 4.[34]BSD names. */
+#endif
+
+/* If your system doesn't typedef ssize_t, change the 0 to a 1. */
+#if 0
+typedef int ssize_t; /* POSIX names. */
+#endif
+
+/*
+ * If your system doesn't have the POSIX type for a signal mask,
+ * change the 0 to a 1.
+ */
+#if 0 /* POSIX 1003.1 signal mask type. */
+typedef unsigned int sigset_t;
+#endif
+
+/*
+ * If your system's vsprintf returns a char *, not an int,
+ * change the 0 to a 1.
+ */
+#if 0
+#define VSPRINTF_CHARSTAR
+#endif
+
+/*
+ * If you don't have POSIX 1003.1 signals, the signal code surrounding the
+ * temporary file creation is intended to block all of the possible signals
+ * long enough to create the file and unlink it. All of this stuff is
+ * intended to use old-style BSD calls to fake POSIX 1003.1 calls.
+ */
+#ifdef NO_POSIX_SIGNALS
+#define sigemptyset(set) (*(set) = 0)
+#define sigfillset(set) (*(set) = ~(sigset_t)0, 0)
+#define sigaddset(set,signo) (*(set) |= sigmask(signo), 0)
+#define sigdelset(set,signo) (*(set) &= ~sigmask(signo), 0)
+#define sigismember(set,signo) ((*(set) & sigmask(signo)) != 0)
+
+#define SIG_BLOCK 1
+#define SIG_UNBLOCK 2
+#define SIG_SETMASK 3
+
+static int __sigtemp; /* For the use of sigprocmask */
+
+/* Repeated test of oset != NULL is to avoid "*0". */
+#define sigprocmask(how, set, oset) \
+ ((__sigtemp = \
+ (((how) == SIG_BLOCK) ? \
+ sigblock(0) | *(set) : \
+ (((how) == SIG_UNBLOCK) ? \
+ sigblock(0) & ~(*(set)) : \
+ ((how) == SIG_SETMASK ? \
+ *(set) : sigblock(0))))), \
+ ((oset) ? (*(oset ? oset : set) = sigsetmask(__sigtemp)) : \
+ sigsetmask(__sigtemp)), 0)
+#endif
+
+/*
+ * If your system doesn't have an include file with the appropriate
+ * byte order set, make sure you specify the correct one.
+ */
+#ifndef BYTE_ORDER
+#define LITTLE_ENDIAN 1234 /* LSB first: i386, vax */
+#define BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */
+#define BYTE_ORDER BIG_ENDIAN /* Set for your system. */
+#endif
+
+#if defined(SYSV) || defined(SYSTEM5)
+#define index(a, b) strchr(a, b)
+#define rindex(a, b) strrchr(a, b)
+#define bzero(a, b) memset(a, 0, b)
+#define bcmp(a, b, n) memcmp(a, b, n)
+#define bcopy(a, b, n) memmove(b, a, n)
+#endif
+
+#if defined(BSD) || defined(BSD4_3)
+#define strchr(a, b) index(a, b)
+#define strrchr(a, b) rindex(a, b)
+#define memcmp(a, b, n) bcmp(a, b, n)
+#define memmove(a, b, n) bcopy(b, a, n)
+#endif
+
+/*
+ * 32-bit machine. The db routines are theoretically independent of
+ * the size of u_shorts and u_longs, but I don't know that anyone has
+ * ever actually tried it. At a minimum, change the following #define's
+ * if you are trying to compile on a different type of system.
+ */
+#ifndef USHRT_MAX
+#define USHRT_MAX 0xFFFF
+#define ULONG_MAX 0xFFFFFFFF
+#endif
+
+#ifndef O_ACCMODE /* POSIX 1003.1 access mode mask. */
+#define O_ACCMODE (O_RDONLY|O_WRONLY|O_RDWR)
+#endif
+
+#ifndef _POSIX2_RE_DUP_MAX /* POSIX 1003.2 RE limit. */
+#define _POSIX2_RE_DUP_MAX 255
+#endif
+
+/*
+ * If you can't provide lock values in the open(2) call. Note, this
+ * allows races to happen.
+ */
+#ifndef O_EXLOCK /* 4.4BSD extension. */
+#define O_EXLOCK 0
+#endif
+
+#ifndef O_SHLOCK /* 4.4BSD extension. */
+#define O_SHLOCK 0
+#endif
+
+#ifndef EFTYPE
+#define EFTYPE EINVAL /* POSIX 1003.1 format errno. */
+#endif
+
+#ifndef WCOREDUMP /* 4.4BSD extension */
+#define WCOREDUMP(a) 0
+#endif
+
+#ifndef STDERR_FILENO
+#define STDIN_FILENO 0 /* ANSI C #defines */
+#define STDOUT_FILENO 1
+#define STDERR_FILENO 2
+#endif
+
+#ifndef SEEK_END
+#define SEEK_SET 0 /* POSIX 1003.1 seek values */
+#define SEEK_CUR 1
+#define SEEK_END 2
+#endif
+
+#ifndef _POSIX_VDISABLE /* POSIX 1003.1 disabling char. */
+#define _POSIX_VDISABLE 0 /* Some systems used 0. */
+#endif
+
+#ifndef TCSASOFT /* 4.4BSD extension. */
+#define TCSASOFT 0
+#endif
+
+#ifndef _POSIX2_RE_DUP_MAX /* POSIX 1003.2 values. */
+#define _POSIX2_RE_DUP_MAX 255
+#endif
+
+#ifndef NULL /* ANSI C #defines NULL everywhere. */
+#define NULL 0
+#endif
+
+#ifndef MAX /* Usually found in <sys/param.h>. */
+#define MAX(_a,_b) ((_a)<(_b)?(_b):(_a))
+#endif
+#ifndef MIN /* Usually found in <sys/param.h>. */
+#define MIN(_a,_b) ((_a)<(_b)?(_a):(_b))
+#endif
+
+/* Default file permissions. */
+#ifndef DEFFILEMODE /* 4.4BSD extension. */
+#define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
+#endif
+
+#ifndef S_ISDIR /* POSIX 1003.1 file type tests. */
+#define S_ISDIR(m) ((m & 0170000) == 0040000) /* directory */
+#define S_ISCHR(m) ((m & 0170000) == 0020000) /* char special */
+#define S_ISBLK(m) ((m & 0170000) == 0060000) /* block special */
+#define S_ISREG(m) ((m & 0170000) == 0100000) /* regular file */
+#define S_ISFIFO(m) ((m & 0170000) == 0010000) /* fifo */
+#endif
+#ifndef S_ISLNK /* BSD POSIX 1003.1 extensions */
+#define S_ISLNK(m) ((m & 0170000) == 0120000) /* symbolic link */
+#define S_ISSOCK(m) ((m & 0170000) == 0140000) /* socket */
+#endif
+
+/* The type of a va_list. */
+#ifndef _BSD_VA_LIST_ /* 4.4BSD #define. */
+#define _BSD_VA_LIST_ char *
+#endif
+
+#endif /* !_COMPAT_H_ */
--- /dev/null
+../../include/db.h
\ No newline at end of file
--- /dev/null
+../../include/mpool.h
\ No newline at end of file
--- /dev/null
+../../include/ndbm.h
\ No newline at end of file
--- /dev/null
+../../include/queue.h
\ No newline at end of file
--- /dev/null
+include
\ No newline at end of file
--- /dev/null
+../Makefile
\ No newline at end of file
--- /dev/null
+../clib
\ No newline at end of file
--- /dev/null
+../../include/cdefs.h
\ No newline at end of file
--- /dev/null
+../../include/compat.h
\ No newline at end of file
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)db.h 8.6 (Berkeley) 6/16/94
+ */
+
+#ifndef _DB_H_
+#define _DB_H_
+
+#include <sys/types.h>
+#include <sys/cdefs.h>
+
+#include <limits.h>
+
+#ifdef __DBINTERFACE_PRIVATE
+#include <compat.h>
+#endif
+
+#define RET_ERROR -1 /* Return values. */
+#define RET_SUCCESS 0
+#define RET_SPECIAL 1
+
+#define MAX_PAGE_NUMBER 0xffffffff /* >= # of pages in a file */
+typedef u_int32_t pgno_t;
+#define MAX_PAGE_OFFSET 65535 /* >= # of bytes in a page */
+typedef u_int16_t indx_t;
+#define MAX_REC_NUMBER 0xffffffff /* >= # of records in a tree */
+typedef u_int32_t recno_t;
+
+/* Key/data structure -- a Data-Base Thang. */
+typedef struct {
+ void *data; /* data */
+ size_t size; /* data length */
+} DBT;
+
+/* Routine flags. */
+#define R_CURSOR 1 /* del, put, seq */
+#define __R_UNUSED 2 /* UNUSED */
+#define R_FIRST 3 /* seq */
+#define R_IAFTER 4 /* put (RECNO) */
+#define R_IBEFORE 5 /* put (RECNO) */
+#define R_LAST 6 /* seq (BTREE, RECNO) */
+#define R_NEXT 7 /* seq */
+#define R_NOOVERWRITE 8 /* put */
+#define R_PREV 9 /* seq (BTREE, RECNO) */
+#define R_SETCURSOR 10 /* put (RECNO) */
+#define R_RECNOSYNC 11 /* sync (RECNO) */
+
+typedef enum { DB_BTREE, DB_HASH, DB_RECNO } DBTYPE;
+
+/*
+ * !!!
+ * The following flags are included in the dbopen(3) call as part of the
+ * open(2) flags. In order to avoid conflicts with the open flags, start
+ * at the top of the 16 or 32-bit number space and work our way down. If
+ * the open flags were significantly expanded in the future, it could be
+ * a problem. Wish I'd left another flags word in the dbopen call.
+ *
+ * !!!
+ * None of this stuff is implemented yet. The only reason that it's here
+ * is so that the access methods can skip copying the key/data pair when
+ * the DB_LOCK flag isn't set.
+ */
+#if UINT_MAX > 65535
+#define DB_LOCK 0x20000000 /* Do locking. */
+#define DB_SHMEM 0x40000000 /* Use shared memory. */
+#define DB_TXN 0x80000000 /* Do transactions. */
+#else
+#define DB_LOCK 0x2000 /* Do locking. */
+#define DB_SHMEM 0x4000 /* Use shared memory. */
+#define DB_TXN 0x8000 /* Do transactions. */
+#endif
+
+/* Access method description structure. */
+typedef struct __db {
+ DBTYPE type; /* Underlying db type. */
+ int (*close) __P((struct __db *));
+ int (*del) __P((const struct __db *, const DBT *, u_int));
+ int (*get) __P((const struct __db *, const DBT *, DBT *, u_int));
+ int (*put) __P((const struct __db *, DBT *, const DBT *, u_int));
+ int (*seq) __P((const struct __db *, DBT *, DBT *, u_int));
+ int (*sync) __P((const struct __db *, u_int));
+ void *internal; /* Access method private. */
+ int (*fd) __P((const struct __db *));
+} DB;
+
+#define BTREEMAGIC 0x053162
+#define BTREEVERSION 3
+
+/* Structure used to pass parameters to the btree routines. */
+typedef struct {
+#define R_DUP 0x01 /* duplicate keys */
+ u_long flags;
+ u_int cachesize; /* bytes to cache */
+ int maxkeypage; /* maximum keys per page */
+ int minkeypage; /* minimum keys per page */
+ u_int psize; /* page size */
+ int (*compare) /* comparison function */
+ __P((const DBT *, const DBT *));
+ size_t (*prefix) /* prefix function */
+ __P((const DBT *, const DBT *));
+ int lorder; /* byte order */
+} BTREEINFO;
+
+#define HASHMAGIC 0x061561
+#define HASHVERSION 2
+
+/* Structure used to pass parameters to the hashing routines. */
+typedef struct {
+ u_int bsize; /* bucket size */
+ u_int ffactor; /* fill factor */
+ u_int nelem; /* number of elements */
+ u_int cachesize; /* bytes to cache */
+ u_int32_t /* hash function */
+ (*hash) __P((const void *, size_t));
+ int lorder; /* byte order */
+} HASHINFO;
+
+/* Structure used to pass parameters to the record routines. */
+typedef struct {
+#define R_FIXEDLEN 0x01 /* fixed-length records */
+#define R_NOKEY 0x02 /* key not required */
+#define R_SNAPSHOT 0x04 /* snapshot the input */
+ u_long flags;
+ u_int cachesize; /* bytes to cache */
+ u_int psize; /* page size */
+ int lorder; /* byte order */
+ size_t reclen; /* record length (fixed-length records) */
+ u_char bval; /* delimiting byte (variable-length records */
+ char *bfname; /* btree file name */
+} RECNOINFO;
+
+#ifdef __DBINTERFACE_PRIVATE
+/*
+ * Little endian <==> big endian 32-bit swap macros.
+ * M_32_SWAP swap a memory location
+ * P_32_SWAP swap a referenced memory location
+ * P_32_COPY swap from one location to another
+ */
+#define M_32_SWAP(a) { \
+ u_int32_t _tmp = a; \
+ ((char *)&a)[0] = ((char *)&_tmp)[3]; \
+ ((char *)&a)[1] = ((char *)&_tmp)[2]; \
+ ((char *)&a)[2] = ((char *)&_tmp)[1]; \
+ ((char *)&a)[3] = ((char *)&_tmp)[0]; \
+}
+#define P_32_SWAP(a) { \
+ u_int32_t _tmp = *(u_int32_t *)a; \
+ ((char *)a)[0] = ((char *)&_tmp)[3]; \
+ ((char *)a)[1] = ((char *)&_tmp)[2]; \
+ ((char *)a)[2] = ((char *)&_tmp)[1]; \
+ ((char *)a)[3] = ((char *)&_tmp)[0]; \
+}
+#define P_32_COPY(a, b) { \
+ ((char *)&(b))[0] = ((char *)&(a))[3]; \
+ ((char *)&(b))[1] = ((char *)&(a))[2]; \
+ ((char *)&(b))[2] = ((char *)&(a))[1]; \
+ ((char *)&(b))[3] = ((char *)&(a))[0]; \
+}
+
+/*
+ * Little endian <==> big endian 16-bit swap macros.
+ * M_16_SWAP swap a memory location
+ * P_16_SWAP swap a referenced memory location
+ * P_16_COPY swap from one location to another
+ */
+#define M_16_SWAP(a) { \
+ u_int16_t _tmp = a; \
+ ((char *)&a)[0] = ((char *)&_tmp)[1]; \
+ ((char *)&a)[1] = ((char *)&_tmp)[0]; \
+}
+#define P_16_SWAP(a) { \
+ u_int16_t _tmp = *(u_int16_t *)a; \
+ ((char *)a)[0] = ((char *)&_tmp)[1]; \
+ ((char *)a)[1] = ((char *)&_tmp)[0]; \
+}
+#define P_16_COPY(a, b) { \
+ ((char *)&(b))[0] = ((char *)&(a))[1]; \
+ ((char *)&(b))[1] = ((char *)&(a))[0]; \
+}
+#endif
+
+__BEGIN_DECLS
+DB *dbopen __P((const char *, int, int, DBTYPE, const void *));
+
+#ifdef __DBINTERFACE_PRIVATE
+DB *__bt_open __P((const char *, int, int, const BTREEINFO *, int));
+DB *__hash_open __P((const char *, int, int, const HASHINFO *, int));
+DB *__rec_open __P((const char *, int, int, const RECNOINFO *, int));
+void __dbpanic __P((DB *dbp));
+#endif
+__END_DECLS
+#endif /* !_DB_H_ */
--- /dev/null
+../../include/mpool.h
\ No newline at end of file
--- /dev/null
+../../include/ndbm.h
\ No newline at end of file
--- /dev/null
+../../include/queue.h
\ No newline at end of file
--- /dev/null
+include
\ No newline at end of file
--- /dev/null
+../Makefile
\ No newline at end of file
--- /dev/null
+*** PORT/db/recno/rec_open.c.orig Mon Aug 16 16:29:18 1993
+--- PORT/db/recno/rec_open.c Mon Aug 16 16:29:35 1993
+***************
+*** 159,165 ****
+ else {
+ t->bt_msize = sb.st_size;
+ if ((t->bt_smap = mmap(NULL, t->bt_msize,
+! PROT_READ, MAP_PRIVATE, rfd,
+ (off_t)0)) == (caddr_t)-1)
+ goto slow;
+ t->bt_cmap = t->bt_smap;
+--- 159,165 ----
+ else {
+ t->bt_msize = sb.st_size;
+ if ((t->bt_smap = mmap(NULL, t->bt_msize,
+! PROT_READ, MAP_FILE | MAP_PRIVATE, rfd,
+ (off_t)0)) == (caddr_t)-1)
+ goto slow;
+ t->bt_cmap = t->bt_smap;
--- /dev/null
+../clib
\ No newline at end of file
--- /dev/null
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)assert.h 4.4 (Berkeley) 4/3/91
+ */
+
+#ifndef _ASSERT_H_
+#define _ASSERT_H_
+
+#ifdef NDEBUG
+#define assert(expression)
+#define _assert(expression)
+#else
+#define assert(expression) { \
+ if (!(expression)) { \
+ (void)fprintf(stderr, \
+ "assertion \"%s\" failed: file \"%s\", line %d\n", \
+ "expression", __FILE__, __LINE__); \
+ exit(2); \
+ } \
+}
+#define _assert(expression) assert(expression)
+#endif
+
+#endif /* !_ASSERT_H_ */
--- /dev/null
+../../include/cdefs.h
\ No newline at end of file
--- /dev/null
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)compat.h 8.13 (Berkeley) 2/21/94
+ */
+
+#ifndef _COMPAT_H_
+#define _COMPAT_H_
+
+#include <sys/types.h>
+
+/*
+ * If your system doesn't typedef u_long, u_short, or u_char, change
+ * the 0 to a 1.
+ */
+#if 0
+typedef unsigned char u_char; /* 4.[34]BSD names. */
+typedef unsigned int u_int;
+typedef unsigned long u_long;
+typedef unsigned short u_short;
+#endif
+
+/* If your system doesn't typedef size_t, change the 0 to a 1. */
+#if 0
+typedef unsigned int size_t; /* POSIX, 4.[34]BSD names. */
+#endif
+
+/* If your system doesn't typedef ssize_t, change the 0 to a 1. */
+#if 0
+typedef int ssize_t; /* POSIX names. */
+#endif
+
+/*
+ * If your system doesn't have the POSIX type for a signal mask,
+ * change the 0 to a 1.
+ */
+#if 0 /* POSIX 1003.1 signal mask type. */
+typedef unsigned int sigset_t;
+#endif
+
+/*
+ * If your system's vsprintf returns a char *, not an int,
+ * change the 0 to a 1.
+ */
+#if 0
+#define VSPRINTF_CHARSTAR
+#endif
+
+/*
+ * If you don't have POSIX 1003.1 signals, the signal code surrounding the
+ * temporary file creation is intended to block all of the possible signals
+ * long enough to create the file and unlink it. All of this stuff is
+ * intended to use old-style BSD calls to fake POSIX 1003.1 calls.
+ */
+#ifdef NO_POSIX_SIGNALS
+#define sigemptyset(set) (*(set) = 0)
+#define sigfillset(set) (*(set) = ~(sigset_t)0, 0)
+#define sigaddset(set,signo) (*(set) |= sigmask(signo), 0)
+#define sigdelset(set,signo) (*(set) &= ~sigmask(signo), 0)
+#define sigismember(set,signo) ((*(set) & sigmask(signo)) != 0)
+
+#define SIG_BLOCK 1
+#define SIG_UNBLOCK 2
+#define SIG_SETMASK 3
+
+static int __sigtemp; /* For the use of sigprocmask */
+
+/* Repeated test of oset != NULL is to avoid "*0". */
+#define sigprocmask(how, set, oset) \
+ ((__sigtemp = \
+ (((how) == SIG_BLOCK) ? \
+ sigblock(0) | *(set) : \
+ (((how) == SIG_UNBLOCK) ? \
+ sigblock(0) & ~(*(set)) : \
+ ((how) == SIG_SETMASK ? \
+ *(set) : sigblock(0))))), \
+ ((oset) ? (*(oset ? oset : set) = sigsetmask(__sigtemp)) : \
+ sigsetmask(__sigtemp)), 0)
+#endif
+
+/*
+ * If your system doesn't have an include file with the appropriate
+ * byte order set, make sure you specify the correct one.
+ */
+#ifndef BYTE_ORDER
+#define LITTLE_ENDIAN 1234 /* LSB first: i386, vax */
+#define BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */
+#define BYTE_ORDER LITTLE_ENDIAN /* Set for your system. */
+#endif
+
+#if defined(SYSV) || defined(SYSTEM5)
+#define index(a, b) strchr(a, b)
+#define rindex(a, b) strrchr(a, b)
+#define bzero(a, b) memset(a, 0, b)
+#define bcmp(a, b, n) memcmp(a, b, n)
+#define bcopy(a, b, n) memmove(b, a, n)
+#endif
+
+#if defined(BSD) || defined(BSD4_3)
+#define strchr(a, b) index(a, b)
+#define strrchr(a, b) rindex(a, b)
+#define memcmp(a, b, n) bcmp(a, b, n)
+#define memmove(a, b, n) bcopy(b, a, n)
+#endif
+
+/*
+ * 32-bit machine. The db routines are theoretically independent of
+ * the size of u_shorts and u_longs, but I don't know that anyone has
+ * ever actually tried it. At a minimum, change the following #define's
+ * if you are trying to compile on a different type of system.
+ */
+#ifndef USHRT_MAX
+#define USHRT_MAX 0xFFFF
+#define ULONG_MAX 0xFFFFFFFF
+#endif
+
+#ifndef O_ACCMODE /* POSIX 1003.1 access mode mask. */
+#define O_ACCMODE (O_RDONLY|O_WRONLY|O_RDWR)
+#endif
+
+#ifndef _POSIX2_RE_DUP_MAX /* POSIX 1003.2 RE limit. */
+#define _POSIX2_RE_DUP_MAX 255
+#endif
+
+/*
+ * If you can't provide lock values in the open(2) call. Note, this
+ * allows races to happen.
+ */
+#ifndef O_EXLOCK /* 4.4BSD extension. */
+#define O_EXLOCK 0
+#endif
+
+#ifndef O_SHLOCK /* 4.4BSD extension. */
+#define O_SHLOCK 0
+#endif
+
+#ifndef EFTYPE
+#define EFTYPE EINVAL /* POSIX 1003.1 format errno. */
+#endif
+
+#ifndef WCOREDUMP /* 4.4BSD extension */
+#define WCOREDUMP(a) 0
+#endif
+
+#ifndef STDERR_FILENO
+#define STDIN_FILENO 0 /* ANSI C #defines */
+#define STDOUT_FILENO 1
+#define STDERR_FILENO 2
+#endif
+
+#ifndef SEEK_END
+#define SEEK_SET 0 /* POSIX 1003.1 seek values */
+#define SEEK_CUR 1
+#define SEEK_END 2
+#endif
+
+#ifndef _POSIX_VDISABLE /* POSIX 1003.1 disabling char. */
+#define _POSIX_VDISABLE 0 /* Some systems used 0. */
+#endif
+
+#ifndef TCSASOFT /* 4.4BSD extension. */
+#define TCSASOFT 0
+#endif
+
+#ifndef _POSIX2_RE_DUP_MAX /* POSIX 1003.2 values. */
+#define _POSIX2_RE_DUP_MAX 255
+#endif
+
+#ifndef NULL /* ANSI C #defines NULL everywhere. */
+#define NULL 0
+#endif
+
+#ifndef MAX /* Usually found in <sys/param.h>. */
+#define MAX(_a,_b) ((_a)<(_b)?(_b):(_a))
+#endif
+#ifndef MIN /* Usually found in <sys/param.h>. */
+#define MIN(_a,_b) ((_a)<(_b)?(_a):(_b))
+#endif
+
+/* Default file permissions. */
+#ifndef DEFFILEMODE /* 4.4BSD extension. */
+#define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
+#endif
+
+#ifndef S_ISDIR /* POSIX 1003.1 file type tests. */
+#define S_ISDIR(m) ((m & 0170000) == 0040000) /* directory */
+#define S_ISCHR(m) ((m & 0170000) == 0020000) /* char special */
+#define S_ISBLK(m) ((m & 0170000) == 0060000) /* block special */
+#define S_ISREG(m) ((m & 0170000) == 0100000) /* regular file */
+#define S_ISFIFO(m) ((m & 0170000) == 0010000) /* fifo */
+#endif
+#ifndef S_ISLNK /* BSD POSIX 1003.1 extensions */
+#define S_ISLNK(m) ((m & 0170000) == 0120000) /* symbolic link */
+#define S_ISSOCK(m) ((m & 0170000) == 0140000) /* socket */
+#endif
+
+/* The type of a va_list. */
+#ifndef _BSD_VA_LIST_ /* 4.4BSD #define. */
+#define _BSD_VA_LIST_ char *
+#endif
+
+#endif /* !_COMPAT_H_ */
--- /dev/null
+../../include/db.h
\ No newline at end of file
--- /dev/null
+../../include/mpool.h
\ No newline at end of file
--- /dev/null
+../../include/ndbm.h
\ No newline at end of file
--- /dev/null
+../../include/queue.h
\ No newline at end of file
--- /dev/null
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)local.h 5.3 (Berkeley) 5/6/93
+ */
+
+/*
+ * Information local to this implementation of stdio,
+ * in particular, macros and private variables.
+ */
+
+int __sflush __P((FILE *));
+FILE *__sfp __P((void));
+int __srefill __P((FILE *));
+int __sread __P((void *, char *, int));
+int __swrite __P((void *, char const *, int));
+fpos_t __sseek __P((void *, fpos_t, int));
+int __sclose __P((void *));
+void __sinit __P((void));
+void _cleanup __P((void));
+void (*__cleanup) __P((void));
+void __smakebuf __P((FILE *));
+int __swhatbuf __P((FILE *, size_t *, int *));
+int _fwalk __P((int (*)(FILE *)));
+int __swsetup __P((FILE *));
+int __sflags __P((const char *, int *));
+
+extern int __sdidinit;
+
+/*
+ * Return true iff the given FILE cannot be written now.
+ */
+#define cantwrite(fp) \
+ ((((fp)->_flags & __SWR) == 0 || (fp)->_bf._base == NULL) && \
+ __swsetup(fp))
+
+/*
+ * Test whether the given stdio file has an active ungetc buffer;
+ * release such a buffer, without restoring ordinary unread data.
+ */
+#define HASUB(fp) ((fp)->_ub._base != NULL)
+#define FREEUB(fp) { \
+ if ((fp)->_ub._base != (fp)->_ubuf) \
+ free((char *)(fp)->_ub._base); \
+ (fp)->_ub._base = NULL; \
+}
+
+/*
+ * test for an fgetline() buffer.
+ */
+#define HASLB(fp) ((fp)->_lb._base != NULL)
+#define FREELB(fp) { \
+ free((char *)(fp)->_lb._base); \
+ (fp)->_lb._base = NULL; \
+}
--- /dev/null
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)makebuf.c 5.3 (Berkeley) 5/6/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include "local.h"
+
+/*
+ * Allocate a file buffer, or switch to unbuffered I/O.
+ * Per the ANSI C standard, ALL tty devices default to line buffered.
+ *
+ * As a side effect, we set __SOPT or __SNPT (en/dis-able fseek
+ * optimisation) right after the fstat() that finds the buffer size.
+ */
+void
+__smakebuf(fp)
+ register FILE *fp;
+{
+ register void *p;
+ register int flags;
+ size_t size;
+ int couldbetty;
+
+ if (fp->_flags & __SNBF) {
+ fp->_bf._base = fp->_p = fp->_nbuf;
+ fp->_bf._size = 1;
+ return;
+ }
+ flags = __swhatbuf(fp, &size, &couldbetty);
+ if ((p = malloc(size)) == NULL) {
+ fp->_flags |= __SNBF;
+ fp->_bf._base = fp->_p = fp->_nbuf;
+ fp->_bf._size = 1;
+ return;
+ }
+ __cleanup = _cleanup;
+ flags |= __SMBF;
+ fp->_bf._base = fp->_p = p;
+ fp->_bf._size = size;
+ if (couldbetty && isatty(fp->_file))
+ flags |= __SLBF;
+ fp->_flags |= flags;
+}
+
+/*
+ * Internal routine to determine `proper' buffering for a file.
+ */
+int
+__swhatbuf(fp, bufsize, couldbetty)
+ register FILE *fp;
+ size_t *bufsize;
+ int *couldbetty;
+{
+ struct stat st;
+
+ if (fp->_file < 0 || fstat(fp->_file, &st) < 0) {
+ *couldbetty = 0;
+ *bufsize = BUFSIZ;
+ return (__SNPT);
+ }
+
+ /* could be a tty iff it is a character device */
+ *couldbetty = (st.st_mode & S_IFMT) == S_IFCHR;
+ if (st.st_blksize <= 0) {
+ *bufsize = BUFSIZ;
+ return (__SNPT);
+ }
+
+ /*
+ * Optimise fseek() only if it is a regular file. (The test for
+ * __sseek is mainly paranoia.) It is safe to set _blksize
+ * unconditionally; it will only be used if __SOPT is also set.
+ */
+ *bufsize = st.st_blksize;
+ fp->_blksize = st.st_blksize;
+ return ((st.st_mode & S_IFMT) == S_IFREG && fp->_seek == __sseek ?
+ __SOPT : __SNPT);
+}
--- /dev/null
+/*-
+ * Copyright (c) 1990 The Regents of the University of California.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+! static char sccsid[] = "@(#)setvbuf.c 5.5 (Berkeley) 5/6/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include "local.h"
+
+/*
+ * Set one of the three kinds of buffering, optionally including
+ * a buffer.
+ */
+setvbuf(fp, buf, mode, size)
+ register FILE *fp;
+ char *buf;
+ register int mode;
+ register size_t size;
+{
+ register int ret, flags;
+ size_t iosize;
+ int ttyflag;
+
+ /*
+ * Verify arguments. The `int' limit on `size' is due to this
+ * particular implementation. Note, buf and size are ignored
+ * when setting _IONBF.
+ */
+ if (mode != _IONBF)
+ if ((mode != _IOFBF && mode != _IOLBF) || (int)size < 0)
+ return (EOF);
+
+ /*
+ * Write current buffer, if any. Discard unread input, cancel
+ * line buffering, and free old buffer if malloc()ed.
+ */
+ ret = 0;
+ (void)__sflush(fp);
+ fp->_r = fp->_lbfsize = 0;
+ flags = fp->_flags;
+ if (flags & __SMBF)
+ free((void *)fp->_bf._base);
+ flags &= ~(__SLBF | __SNBF | __SMBF | __SOPT | __SNPT);
+
+ /* If setting unbuffered mode, skip all the hard work. */
+ if (mode == _IONBF)
+ goto nbf;
+
+ /*
+ * Find optimal I/O size for seek optimization. This also returns
+ * a `tty flag' to suggest that we check isatty(fd), but we do not
+ * care since our caller told us how to buffer.
+ */
+ flags |= __swhatbuf(fp, &iosize, &ttyflag);
+ if (size == 0) {
+ buf = NULL; /* force local allocation */
+ size = iosize;
+ }
+
+ /* Allocate buffer if needed. */
+ if (buf == NULL) {
+ if ((buf = malloc(size)) == NULL) {
+ /*
+ * Unable to honor user's request. We will return
+ * failure, but try again with file system size.
+ */
+ ret = EOF;
+ if (size != iosize) {
+ size = iosize;
+ buf = malloc(size);
+ }
+ }
+ if (buf == NULL) {
+ /* No luck; switch to unbuffered I/O. */
+nbf:
+ fp->_flags = flags | __SNBF;
+ fp->_w = 0;
+ fp->_bf._base = fp->_p = fp->_nbuf;
+ fp->_bf._size = 1;
+ return (ret);
+ }
+ flags |= __SMBF;
+ }
+
+ /*
+ * Kill any seek optimization if the buffer is not the
+ * right size.
+ *
+ * SHOULD WE ALLOW MULTIPLES HERE (i.e., ok iff (size % iosize) == 0)?
+ */
+ if (size != iosize)
+ flags |= __SNPT;
+
+ /*
+ * Fix up the FILE fields, and set __cleanup for output flush on
+ * exit (since we are buffered in some way). If in r/w mode, go
+ * to the intermediate state, so that everyone has to call
+ * __srefill or __swsetup on the first operation -- it is more
+ * trouble than it is worth to set things up correctly here.
+ */
+ if (mode == _IOLBF)
+ flags |= __SLBF;
+ if (flags & __SRW)
+ flags &= ~(__SRD | __SWR);
+ fp->_w = 0;
+ fp->_flags = flags;
+ fp->_bf._base = fp->_p = (unsigned char *)buf;
+ fp->_bf._size = size;
+ fp->_lbfsize = 0;
+ __cleanup = _cleanup;
+
+ return (ret);
+}
--- /dev/null
+include
\ No newline at end of file
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Chris Torek.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)bcopy.c 8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/cdefs.h>
+#include <string.h>
+
+/*
+ * sizeof(word) MUST BE A POWER OF TWO
+ * SO THAT wmask BELOW IS ALL ONES
+ */
+typedef int word; /* "word" used for optimal copy speed */
+
+#define wsize sizeof(word)
+#define wmask (wsize - 1)
+
+/*
+ * Copy a block of memory, handling overlap.
+ * This is the routine that actually implements
+ * (the portable versions of) bcopy, memcpy, and memmove.
+ */
+#ifdef MEMCOPY
+void *
+memcpy(dst0, src0, length)
+#else
+#ifdef MEMMOVE
+void *
+memmove(dst0, src0, length)
+#else
+void
+bcopy(src0, dst0, length)
+#endif
+#endif
+ void *dst0;
+ const void *src0;
+ register size_t length;
+{
+ register char *dst = dst0;
+ register const char *src = src0;
+ register size_t t;
+
+ if (length == 0 || dst == src) /* nothing to do */
+ goto done;
+
+ /*
+ * Macros: loop-t-times; and loop-t-times, t>0
+ */
+#define TLOOP(s) if (t) TLOOP1(s)
+#define TLOOP1(s) do { s; } while (--t)
+
+ if ((unsigned long)dst < (unsigned long)src) {
+ /*
+ * Copy forward.
+ */
+ t = (int)src; /* only need low bits */
+ if ((t | (int)dst) & wmask) {
+ /*
+ * Try to align operands. This cannot be done
+ * unless the low bits match.
+ */
+ if ((t ^ (int)dst) & wmask || length < wsize)
+ t = length;
+ else
+ t = wsize - (t & wmask);
+ length -= t;
+ TLOOP1(*dst++ = *src++);
+ }
+ /*
+ * Copy whole words, then mop up any trailing bytes.
+ */
+ t = length / wsize;
+ TLOOP(*(word *)dst = *(word *)src; src += wsize; dst += wsize);
+ t = length & wmask;
+ TLOOP(*dst++ = *src++);
+ } else {
+ /*
+ * Copy backwards. Otherwise essentially the same.
+ * Alignment works as before, except that it takes
+ * (t&wmask) bytes to align, not wsize-(t&wmask).
+ */
+ src += length;
+ dst += length;
+ t = (int)src;
+ if ((t | (int)dst) & wmask) {
+ if ((t ^ (int)dst) & wmask || length <= wsize)
+ t = length;
+ else
+ t &= wmask;
+ length -= t;
+ TLOOP1(*--dst = *--src);
+ }
+ t = length / wsize;
+ TLOOP(src -= wsize; dst -= wsize; *(word *)dst = *(word *)src);
+ t = length & wmask;
+ TLOOP(*--dst = *--src);
+ }
+done:
+#if defined(MEMCOPY) || defined(MEMMOVE)
+ return (dst0);
+#else
+ return;
+#endif
+}
--- /dev/null
+/*
+ * Copyright (c) 1987, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)mktemp.c 8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <errno.h>
+#include <stdio.h>
+#include <ctype.h>
+
+static int _gettemp();
+
+mkstemp(path)
+ char *path;
+{
+ int fd;
+
+ return (_gettemp(path, &fd) ? fd : -1);
+}
+
+char *
+mktemp(path)
+ char *path;
+{
+ return(_gettemp(path, (int *)NULL) ? path : (char *)NULL);
+}
+
+static
+_gettemp(path, doopen)
+ char *path;
+ register int *doopen;
+{
+ extern int errno;
+ register char *start, *trv;
+ struct stat sbuf;
+ u_int pid;
+
+ pid = getpid();
+ for (trv = path; *trv; ++trv); /* extra X's get set to 0's */
+ while (*--trv == 'X') {
+ *trv = (pid % 10) + '0';
+ pid /= 10;
+ }
+
+ /*
+ * check the target directory; if you have six X's and it
+ * doesn't exist this runs for a *very* long time.
+ */
+ for (start = trv + 1;; --trv) {
+ if (trv <= path)
+ break;
+ if (*trv == '/') {
+ *trv = '\0';
+ if (stat(path, &sbuf))
+ return(0);
+ if (!S_ISDIR(sbuf.st_mode)) {
+ errno = ENOTDIR;
+ return(0);
+ }
+ *trv = '/';
+ break;
+ }
+ }
+
+ for (;;) {
+ if (doopen) {
+ if ((*doopen =
+ open(path, O_CREAT|O_EXCL|O_RDWR, 0600)) >= 0)
+ return(1);
+ if (errno != EEXIST)
+ return(0);
+ }
+ else if (stat(path, &sbuf))
+ return(errno == ENOENT ? 1 : 0);
+
+ /* tricky little algorithm for backward compatibility */
+ for (trv = start;;) {
+ if (!*trv)
+ return(0);
+ if (*trv == 'z')
+ *trv++ = 'a';
+ else {
+ if (isdigit(*trv))
+ *trv = 'a';
+ else
+ ++*trv;
+ break;
+ }
+ }
+ }
+ /*NOTREACHED*/
+}
--- /dev/null
+#include <sys/types.h>
+#include <sys/cdefs.h>
+
+#include <compat.h>
+
+#ifdef __STDC__
+#include <stdarg.h>
+#else
+#include <varargs.h>
+#endif
+
+int
+#ifdef __STDC__
+snprintf(char *str, size_t n, const char *fmt, ...)
+#else
+snprintf(str, n, fmt, va_alist)
+ char *str;
+ size_t n;
+ const char *fmt;
+ va_dcl
+#endif
+{
+ va_list ap;
+ char *rp;
+ int rval;
+#ifdef __STDC__
+ va_start(ap, fmt);
+#else
+ va_start(ap);
+#endif
+#ifdef VSPRINTF_CHARSTAR
+ rp = vsprintf(str, fmt, ap);
+ va_end(ap);
+ return (strlen(rp));
+#else
+ rval = vsprintf(str, fmt, ap);
+ va_end(ap);
+ return (rval);
+#endif
+}
+
+int
+vsnprintf(str, n, fmt, ap)
+ char *str;
+ size_t n;
+ const char *fmt;
+ va_list ap;
+{
+#ifdef VSPRINTF_CHARSTAR
+ return (strlen(vsprintf(str, fmt, ap)));
+#else
+ return (vsprintf(str, fmt, ap));
+#endif
+}
--- /dev/null
+/*
+ * Copyright (c) 1988, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)strerror.c 8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <string.h>
+
+char *
+strerror(num)
+ int num;
+{
+ extern int sys_nerr;
+ extern char *sys_errlist[];
+#define UPREFIX "Unknown error: "
+ static char ebuf[40] = UPREFIX; /* 64-bit number + slop */
+ register unsigned int errnum;
+ register char *p, *t;
+ char tmp[40];
+
+ errnum = num; /* convert to unsigned */
+ if (errnum < sys_nerr)
+ return(sys_errlist[errnum]);
+
+ /* Do this by hand, so we don't include stdio(3). */
+ t = tmp;
+ do {
+ *t++ = "0123456789"[errnum % 10];
+ } while (errnum /= 10);
+ for (p = ebuf + sizeof(UPREFIX) - 1;;) {
+ *p++ = *--t;
+ if (t <= tmp)
+ break;
+ }
+ return(ebuf);
+}
--- /dev/null
+# @(#)Makefile 8.9 (Berkeley) 7/14/94
+
+LIBDB= libdb.a
+OBJ1= hash.o hash_bigkey.o hash_buf.o hash_func.o hash_log2.o hash_page.o \
+ hsearch.o ndbm.o
+OBJ2= bt_close.o bt_conv.o bt_debug.o bt_delete.o bt_get.o bt_open.o \
+ bt_overflow.o bt_page.o bt_put.o bt_search.o bt_seq.o bt_split.o \
+ bt_utils.o
+OBJ3= db.o
+OBJ4= mpool.o
+OBJ5= rec_close.o rec_delete.o rec_get.o rec_open.o rec_put.o rec_search.o \
+ rec_seq.o rec_utils.o
+
+MISC=
+
+${LIBDB}: ${OBJ1} ${OBJ2} ${OBJ3} ${OBJ4} ${OBJ5} ${MISC}
+ rm -f $@
+ ar cq $@ \
+ `lorder ${OBJ1} ${OBJ2} ${OBJ3} ${OBJ4} ${OBJ5} ${MISC} | tsort`
+ ranlib $@
+
+clean:
+ rm -f ${LIBDB} ${OBJ1} ${OBJ2} ${OBJ3} ${OBJ4} ${OBJ5} ${MISC}
+
+CC= gcc
+OORG= -O2
+CL= ${CC} -c -D__DBINTERFACE_PRIVATE ${OORG} -I. -Iinclude
+
+hash.o: ../../hash/hash.c
+ ${CL} -I../../hash ../../hash/hash.c
+hash_bigkey.o: ../../hash/hash_bigkey.c
+ ${CL} -I../../hash ../../hash/hash_bigkey.c
+hash_buf.o: ../../hash/hash_buf.c
+ ${CL} -I../../hash ../../hash/hash_buf.c
+hash_func.o: ../../hash/hash_func.c
+ ${CL} -I../../hash ../../hash/hash_func.c
+hash_log2.o: ../../hash/hash_log2.c
+ ${CL} -I../../hash ../../hash/hash_log2.c
+hash_page.o: ../../hash/hash_page.c
+ ${CL} -I../../hash ../../hash/hash_page.c
+hsearch.o: ../../hash/hsearch.c
+ ${CL} -I../../hash ../../hash/hsearch.c
+ndbm.o: ../../hash/ndbm.c
+ ${CL} -I../../hash ../../hash/ndbm.c
+
+bt_close.o: ../../btree/bt_close.c
+ ${CL} -I../../btree ../../btree/bt_close.c
+bt_conv.o: ../../btree/bt_conv.c
+ ${CL} -I../../btree ../../btree/bt_conv.c
+bt_debug.o: ../../btree/bt_debug.c
+ ${CL} -I../../btree ../../btree/bt_debug.c
+bt_delete.o: ../../btree/bt_delete.c
+ ${CL} -I../../btree ../../btree/bt_delete.c
+bt_get.o: ../../btree/bt_get.c
+ ${CL} -I../../btree ../../btree/bt_get.c
+bt_open.o: ../../btree/bt_open.c
+ ${CL} -I../../btree ../../btree/bt_open.c
+bt_overflow.o: ../../btree/bt_overflow.c
+ ${CL} -I../../btree ../../btree/bt_overflow.c
+bt_page.o: ../../btree/bt_page.c
+ ${CL} -I../../btree ../../btree/bt_page.c
+bt_put.o: ../../btree/bt_put.c
+ ${CL} -I../../btree ../../btree/bt_put.c
+bt_search.o: ../../btree/bt_search.c
+ ${CL} -I../../btree ../../btree/bt_search.c
+bt_seq.o: ../../btree/bt_seq.c
+ ${CL} -I../../btree ../../btree/bt_seq.c
+bt_split.o: ../../btree/bt_split.c
+ ${CL} -I../../btree ../../btree/bt_split.c
+bt_stack.o: ../../btree/bt_stack.c
+ ${CL} -I../../btree ../../btree/bt_stack.c
+bt_utils.o: ../../btree/bt_utils.c
+ ${CL} -I../../btree ../../btree/bt_utils.c
+
+db.o: ../../db/db.c
+ ${CL} ../../db/db.c
+
+mpool.o: ../../mpool/mpool.c
+ ${CL} -I../../mpool ../../mpool/mpool.c
+
+rec_close.o: ../../recno/rec_close.c
+ ${CL} -I../../recno ../../recno/rec_close.c
+rec_delete.o: ../../recno/rec_delete.c
+ ${CL} -I../../recno ../../recno/rec_delete.c
+rec_get.o: ../../recno/rec_get.c
+ ${CL} -I../../recno ../../recno/rec_get.c
+rec_open.o: ../../recno/rec_open.c
+ ${CL} -I../../recno ../../recno/rec_open.c
+rec_put.o: ../../recno/rec_put.c
+ ${CL} -I../../recno ../../recno/rec_put.c
+rec_search.o: ../../recno/rec_search.c
+ ${CL} -I../../recno ../../recno/rec_search.c
+rec_seq.o: ../../recno/rec_seq.c
+ ${CL} -I../../recno ../../recno/rec_seq.c
+rec_utils.o: ../../recno/rec_utils.c
+ ${CL} -I../../recno ../../recno/rec_utils.c
+
+memmove.o:
+ ${CC} -DMEMMOVE -c -O -I. -Iinclude clib/memmove.c
+mktemp.o:
+ ${CC} -c -O -I. -Iinclude clib/mktemp.c
+snprintf.o:
+ ${CC} -c -O -I. -Iinclude clib/snprintf.c
--- /dev/null
+../clib
\ No newline at end of file
--- /dev/null
+../../include/cdefs.h
\ No newline at end of file
--- /dev/null
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)compat.h 8.13 (Berkeley) 2/21/94
+ */
+
+#ifndef _COMPAT_H_
+#define _COMPAT_H_
+
+#include <sys/types.h>
+
+/*
+ * If your system doesn't typedef u_long, u_short, or u_char, change
+ * the 0 to a 1.
+ */
+#if 0
+typedef unsigned char u_char; /* 4.[34]BSD names. */
+typedef unsigned int u_int;
+typedef unsigned long u_long;
+typedef unsigned short u_short;
+#endif
+
+/* If your system doesn't typedef size_t, change the 0 to a 1. */
+#if 0
+typedef unsigned int size_t; /* POSIX, 4.[34]BSD names. */
+#endif
+
+/* If your system doesn't typedef ssize_t, change the 0 to a 1. */
+#if 0
+typedef int ssize_t; /* POSIX names. */
+#endif
+
+/*
+ * If your system doesn't have the POSIX type for a signal mask,
+ * change the 0 to a 1.
+ */
+#if 0 /* POSIX 1003.1 signal mask type. */
+typedef unsigned int sigset_t;
+#endif
+
+/*
+ * If your system's vsprintf returns a char *, not an int,
+ * change the 0 to a 1.
+ */
+#if 0
+#define VSPRINTF_CHARSTAR
+#endif
+
+/*
+ * If you don't have POSIX 1003.1 signals, the signal code surrounding the
+ * temporary file creation is intended to block all of the possible signals
+ * long enough to create the file and unlink it. All of this stuff is
+ * intended to use old-style BSD calls to fake POSIX 1003.1 calls.
+ */
+#ifdef NO_POSIX_SIGNALS
+#define sigemptyset(set) (*(set) = 0)
+#define sigfillset(set) (*(set) = ~(sigset_t)0, 0)
+#define sigaddset(set,signo) (*(set) |= sigmask(signo), 0)
+#define sigdelset(set,signo) (*(set) &= ~sigmask(signo), 0)
+#define sigismember(set,signo) ((*(set) & sigmask(signo)) != 0)
+
+#define SIG_BLOCK 1
+#define SIG_UNBLOCK 2
+#define SIG_SETMASK 3
+
+static int __sigtemp; /* For the use of sigprocmask */
+
+/* Repeated test of oset != NULL is to avoid "*0". */
+#define sigprocmask(how, set, oset) \
+ ((__sigtemp = \
+ (((how) == SIG_BLOCK) ? \
+ sigblock(0) | *(set) : \
+ (((how) == SIG_UNBLOCK) ? \
+ sigblock(0) & ~(*(set)) : \
+ ((how) == SIG_SETMASK ? \
+ *(set) : sigblock(0))))), \
+ ((oset) ? (*(oset ? oset : set) = sigsetmask(__sigtemp)) : \
+ sigsetmask(__sigtemp)), 0)
+#endif
+
+/*
+ * If your system doesn't have an include file with the appropriate
+ * byte order set, make sure you specify the correct one.
+ */
+#ifndef BYTE_ORDER
+#define LITTLE_ENDIAN 1234 /* LSB first: i386, vax */
+#define BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */
+#define BYTE_ORDER BIG_ENDIAN /* Set for your system. */
+#endif
+
+#if defined(SYSV) || defined(SYSTEM5)
+#define index(a, b) strchr(a, b)
+#define rindex(a, b) strrchr(a, b)
+#define bzero(a, b) memset(a, 0, b)
+#define bcmp(a, b, n) memcmp(a, b, n)
+#define bcopy(a, b, n) memmove(b, a, n)
+#endif
+
+#if defined(BSD) || defined(BSD4_3)
+#define strchr(a, b) index(a, b)
+#define strrchr(a, b) rindex(a, b)
+#define memcmp(a, b, n) bcmp(a, b, n)
+#define memmove(a, b, n) bcopy(b, a, n)
+#endif
+
+/*
+ * 32-bit machine. The db routines are theoretically independent of
+ * the size of u_shorts and u_longs, but I don't know that anyone has
+ * ever actually tried it. At a minimum, change the following #define's
+ * if you are trying to compile on a different type of system.
+ */
+#ifndef USHRT_MAX
+#define USHRT_MAX 0xFFFF
+#define ULONG_MAX 0xFFFFFFFF
+#endif
+
+#ifndef O_ACCMODE /* POSIX 1003.1 access mode mask. */
+#define O_ACCMODE (O_RDONLY|O_WRONLY|O_RDWR)
+#endif
+
+#ifndef _POSIX2_RE_DUP_MAX /* POSIX 1003.2 RE limit. */
+#define _POSIX2_RE_DUP_MAX 255
+#endif
+
+/*
+ * If you can't provide lock values in the open(2) call. Note, this
+ * allows races to happen.
+ */
+#ifndef O_EXLOCK /* 4.4BSD extension. */
+#define O_EXLOCK 0
+#endif
+
+#ifndef O_SHLOCK /* 4.4BSD extension. */
+#define O_SHLOCK 0
+#endif
+
+#ifndef EFTYPE
+#define EFTYPE EINVAL /* POSIX 1003.1 format errno. */
+#endif
+
+#ifndef WCOREDUMP /* 4.4BSD extension */
+#define WCOREDUMP(a) 0
+#endif
+
+#ifndef STDERR_FILENO
+#define STDIN_FILENO 0 /* ANSI C #defines */
+#define STDOUT_FILENO 1
+#define STDERR_FILENO 2
+#endif
+
+#ifndef SEEK_END
+#define SEEK_SET 0 /* POSIX 1003.1 seek values */
+#define SEEK_CUR 1
+#define SEEK_END 2
+#endif
+
+#ifndef _POSIX_VDISABLE /* POSIX 1003.1 disabling char. */
+#define _POSIX_VDISABLE 0 /* Some systems used 0. */
+#endif
+
+#ifndef TCSASOFT /* 4.4BSD extension. */
+#define TCSASOFT 0
+#endif
+
+#ifndef _POSIX2_RE_DUP_MAX /* POSIX 1003.2 values. */
+#define _POSIX2_RE_DUP_MAX 255
+#endif
+
+#ifndef NULL /* ANSI C #defines NULL everywhere. */
+#define NULL 0
+#endif
+
+#ifndef MAX /* Usually found in <sys/param.h>. */
+#define MAX(_a,_b) ((_a)<(_b)?(_b):(_a))
+#endif
+#ifndef MIN /* Usually found in <sys/param.h>. */
+#define MIN(_a,_b) ((_a)<(_b)?(_a):(_b))
+#endif
+
+/* Default file permissions. */
+#ifndef DEFFILEMODE /* 4.4BSD extension. */
+#define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
+#endif
+
+#ifndef S_ISDIR /* POSIX 1003.1 file type tests. */
+#define S_ISDIR(m) ((m & 0170000) == 0040000) /* directory */
+#define S_ISCHR(m) ((m & 0170000) == 0020000) /* char special */
+#define S_ISBLK(m) ((m & 0170000) == 0060000) /* block special */
+#define S_ISREG(m) ((m & 0170000) == 0100000) /* regular file */
+#define S_ISFIFO(m) ((m & 0170000) == 0010000) /* fifo */
+#endif
+#ifndef S_ISLNK /* BSD POSIX 1003.1 extensions */
+#define S_ISLNK(m) ((m & 0170000) == 0120000) /* symbolic link */
+#define S_ISSOCK(m) ((m & 0170000) == 0140000) /* socket */
+#endif
+
+/* The type of a va_list. */
+#ifndef _BSD_VA_LIST_ /* 4.4BSD #define. */
+#define _BSD_VA_LIST_ char *
+#endif
+
+#endif /* !_COMPAT_H_ */
--- /dev/null
+../../include/db.h
\ No newline at end of file
--- /dev/null
+../../include/mpool.h
\ No newline at end of file
--- /dev/null
+../../include/ndbm.h
\ No newline at end of file
--- /dev/null
+../../include/queue.h
\ No newline at end of file
--- /dev/null
+include
\ No newline at end of file
--- /dev/null
+hpux.9.01
\ No newline at end of file
--- /dev/null
+# @(#)Makefile 8.9 (Berkeley) 7/14/94
+
+LIBDB= libdb.a
+OBJ1= hash.o hash_bigkey.o hash_buf.o hash_func.o hash_log2.o hash_page.o \
+ hsearch.o ndbm.o
+OBJ2= bt_close.o bt_conv.o bt_debug.o bt_delete.o bt_get.o bt_open.o \
+ bt_overflow.o bt_page.o bt_put.o bt_search.o bt_seq.o bt_split.o \
+ bt_utils.o
+OBJ3= db.o
+OBJ4= mpool.o
+OBJ5= rec_close.o rec_delete.o rec_get.o rec_open.o rec_put.o rec_search.o \
+ rec_seq.o rec_utils.o
+
+MISC= snprintf.o
+
+${LIBDB}: ${OBJ1} ${OBJ2} ${OBJ3} ${OBJ4} ${OBJ5} ${MISC}
+ rm -f $@
+ ar cq $@ \
+ `lorder ${OBJ1} ${OBJ2} ${OBJ3} ${OBJ4} ${OBJ5} ${MISC} | tsort`
+ ranlib $@
+
+clean:
+ rm -f ${LIBDB} ${OBJ1} ${OBJ2} ${OBJ3} ${OBJ4} ${OBJ5} ${MISC}
+
+OORG= -O
+CL= ${CC} -c -D__DBINTERFACE_PRIVATE ${OORG} -I. -Iinclude
+
+hash.o: ../../hash/hash.c
+ ${CL} -I../../hash ../../hash/hash.c
+hash_bigkey.o: ../../hash/hash_bigkey.c
+ ${CL} -I../../hash ../../hash/hash_bigkey.c
+hash_buf.o: ../../hash/hash_buf.c
+ ${CL} -I../../hash ../../hash/hash_buf.c
+hash_func.o: ../../hash/hash_func.c
+ ${CL} -I../../hash ../../hash/hash_func.c
+hash_log2.o: ../../hash/hash_log2.c
+ ${CL} -I../../hash ../../hash/hash_log2.c
+hash_page.o: ../../hash/hash_page.c
+ ${CL} -I../../hash ../../hash/hash_page.c
+hsearch.o: ../../hash/hsearch.c
+ ${CL} -I../../hash ../../hash/hsearch.c
+ndbm.o: ../../hash/ndbm.c
+ ${CL} -I../../hash ../../hash/ndbm.c
+
+bt_close.o: ../../btree/bt_close.c
+ ${CL} -I../../btree ../../btree/bt_close.c
+bt_conv.o: ../../btree/bt_conv.c
+ ${CL} -I../../btree ../../btree/bt_conv.c
+bt_debug.o: ../../btree/bt_debug.c
+ ${CL} -I../../btree ../../btree/bt_debug.c
+bt_delete.o: ../../btree/bt_delete.c
+ ${CL} -I../../btree ../../btree/bt_delete.c
+bt_get.o: ../../btree/bt_get.c
+ ${CL} -I../../btree ../../btree/bt_get.c
+bt_open.o: ../../btree/bt_open.c
+ ${CL} -I../../btree ../../btree/bt_open.c
+bt_overflow.o: ../../btree/bt_overflow.c
+ ${CL} -I../../btree ../../btree/bt_overflow.c
+bt_page.o: ../../btree/bt_page.c
+ ${CL} -I../../btree ../../btree/bt_page.c
+bt_put.o: ../../btree/bt_put.c
+ ${CL} -I../../btree ../../btree/bt_put.c
+bt_search.o: ../../btree/bt_search.c
+ ${CL} -I../../btree ../../btree/bt_search.c
+bt_seq.o: ../../btree/bt_seq.c
+ ${CL} -I../../btree ../../btree/bt_seq.c
+bt_split.o: ../../btree/bt_split.c
+ ${CL} -I../../btree ../../btree/bt_split.c
+bt_stack.o: ../../btree/bt_stack.c
+ ${CL} -I../../btree ../../btree/bt_stack.c
+bt_utils.o: ../../btree/bt_utils.c
+ ${CL} -I../../btree ../../btree/bt_utils.c
+
+db.o: ../../db/db.c
+ ${CL} ../../db/db.c
+
+mpool.o: ../../mpool/mpool.c
+ ${CL} -I../../mpool ../../mpool/mpool.c
+
+rec_close.o: ../../recno/rec_close.c
+ ${CL} -I../../recno ../../recno/rec_close.c
+rec_delete.o: ../../recno/rec_delete.c
+ ${CL} -I../../recno ../../recno/rec_delete.c
+rec_get.o: ../../recno/rec_get.c
+ ${CL} -I../../recno ../../recno/rec_get.c
+rec_open.o: ../../recno/rec_open.c
+ ${CL} -I../../recno ../../recno/rec_open.c
+rec_put.o: ../../recno/rec_put.c
+ ${CL} -I../../recno ../../recno/rec_put.c
+rec_search.o: ../../recno/rec_search.c
+ ${CL} -I../../recno ../../recno/rec_search.c
+rec_seq.o: ../../recno/rec_seq.c
+ ${CL} -I../../recno ../../recno/rec_seq.c
+rec_utils.o: ../../recno/rec_utils.c
+ ${CL} -I../../recno ../../recno/rec_utils.c
+
+memmove.o:
+ ${CC} -DMEMMOVE -c -O -I. -Iinclude clib/memmove.c
+mktemp.o:
+ ${CC} -c -O -I. -Iinclude clib/mktemp.c
+snprintf.o:
+ ${CC} -c -O -I. -Iinclude clib/snprintf.c
--- /dev/null
+../clib
\ No newline at end of file
--- /dev/null
+../../include/cdefs.h
\ No newline at end of file
--- /dev/null
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)compat.h 8.13 (Berkeley) 2/21/94
+ */
+
+#ifndef _COMPAT_H_
+#define _COMPAT_H_
+
+#include <sys/types.h>
+
+/*
+ * If your system doesn't typedef u_long, u_short, or u_char, change
+ * the 0 to a 1.
+ */
+#if 0
+typedef unsigned char u_char; /* 4.[34]BSD names. */
+typedef unsigned int u_int;
+typedef unsigned long u_long;
+typedef unsigned short u_short;
+#endif
+
+/* If your system doesn't typedef size_t, change the 0 to a 1. */
+#if 0
+typedef unsigned int size_t; /* POSIX, 4.[34]BSD names. */
+#endif
+
+/* If your system doesn't typedef ssize_t, change the 0 to a 1. */
+#if 0
+typedef int ssize_t; /* POSIX names. */
+#endif
+
+/*
+ * If your system doesn't have the POSIX type for a signal mask,
+ * change the 0 to a 1.
+ */
+#if 0 /* POSIX 1003.1 signal mask type. */
+typedef unsigned int sigset_t;
+#endif
+
+/*
+ * If your system's vsprintf returns a char *, not an int,
+ * change the 0 to a 1.
+ */
+#if 0
+#define VSPRINTF_CHARSTAR
+#endif
+
+/*
+ * If you don't have POSIX 1003.1 signals, the signal code surrounding the
+ * temporary file creation is intended to block all of the possible signals
+ * long enough to create the file and unlink it. All of this stuff is
+ * intended to use old-style BSD calls to fake POSIX 1003.1 calls.
+ */
+#ifdef NO_POSIX_SIGNALS
+#define sigemptyset(set) (*(set) = 0)
+#define sigfillset(set) (*(set) = ~(sigset_t)0, 0)
+#define sigaddset(set,signo) (*(set) |= sigmask(signo), 0)
+#define sigdelset(set,signo) (*(set) &= ~sigmask(signo), 0)
+#define sigismember(set,signo) ((*(set) & sigmask(signo)) != 0)
+
+#define SIG_BLOCK 1
+#define SIG_UNBLOCK 2
+#define SIG_SETMASK 3
+
+static int __sigtemp; /* For the use of sigprocmask */
+
+/* Repeated test of oset != NULL is to avoid "*0". */
+#define sigprocmask(how, set, oset) \
+ ((__sigtemp = \
+ (((how) == SIG_BLOCK) ? \
+ sigblock(0) | *(set) : \
+ (((how) == SIG_UNBLOCK) ? \
+ sigblock(0) & ~(*(set)) : \
+ ((how) == SIG_SETMASK ? \
+ *(set) : sigblock(0))))), \
+ ((oset) ? (*(oset ? oset : set) = sigsetmask(__sigtemp)) : \
+ sigsetmask(__sigtemp)), 0)
+#endif
+
+/*
+ * If your system doesn't have an include file with the appropriate
+ * byte order set, make sure you specify the correct one.
+ */
+#ifndef BYTE_ORDER
+#define LITTLE_ENDIAN 1234 /* LSB first: i386, vax */
+#define BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */
+#define BYTE_ORDER BIG_ENDIAN /* Set for your system. */
+#endif
+
+#if defined(SYSV) || defined(SYSTEM5)
+#define index(a, b) strchr(a, b)
+#define rindex(a, b) strrchr(a, b)
+#define bzero(a, b) memset(a, 0, b)
+#define bcmp(a, b, n) memcmp(a, b, n)
+#define bcopy(a, b, n) memmove(b, a, n)
+#endif
+
+#if defined(BSD) || defined(BSD4_3)
+#define strchr(a, b) index(a, b)
+#define strrchr(a, b) rindex(a, b)
+#define memcmp(a, b, n) bcmp(a, b, n)
+#define memmove(a, b, n) bcopy(b, a, n)
+#endif
+
+/*
+ * 32-bit machine. The db routines are theoretically independent of
+ * the size of u_shorts and u_longs, but I don't know that anyone has
+ * ever actually tried it. At a minimum, change the following #define's
+ * if you are trying to compile on a different type of system.
+ */
+#ifndef USHRT_MAX
+#define USHRT_MAX 0xFFFF
+#define ULONG_MAX 0xFFFFFFFF
+#endif
+
+#ifndef O_ACCMODE /* POSIX 1003.1 access mode mask. */
+#define O_ACCMODE (O_RDONLY|O_WRONLY|O_RDWR)
+#endif
+
+#ifndef _POSIX2_RE_DUP_MAX /* POSIX 1003.2 RE limit. */
+#define _POSIX2_RE_DUP_MAX 255
+#endif
+
+/*
+ * If you can't provide lock values in the open(2) call. Note, this
+ * allows races to happen.
+ */
+#ifndef O_EXLOCK /* 4.4BSD extension. */
+#define O_EXLOCK 0
+#endif
+
+#ifndef O_SHLOCK /* 4.4BSD extension. */
+#define O_SHLOCK 0
+#endif
+
+#ifndef EFTYPE
+#define EFTYPE EINVAL /* POSIX 1003.1 format errno. */
+#endif
+
+#ifndef WCOREDUMP /* 4.4BSD extension */
+#define WCOREDUMP(a) 0
+#endif
+
+#ifndef STDERR_FILENO
+#define STDIN_FILENO 0 /* ANSI C #defines */
+#define STDOUT_FILENO 1
+#define STDERR_FILENO 2
+#endif
+
+#ifndef SEEK_END
+#define SEEK_SET 0 /* POSIX 1003.1 seek values */
+#define SEEK_CUR 1
+#define SEEK_END 2
+#endif
+
+#ifndef _POSIX_VDISABLE /* POSIX 1003.1 disabling char. */
+#define _POSIX_VDISABLE 0 /* Some systems used 0. */
+#endif
+
+#ifndef TCSASOFT /* 4.4BSD extension. */
+#define TCSASOFT 0
+#endif
+
+#ifndef _POSIX2_RE_DUP_MAX /* POSIX 1003.2 values. */
+#define _POSIX2_RE_DUP_MAX 255
+#endif
+
+#ifndef NULL /* ANSI C #defines NULL everywhere. */
+#define NULL 0
+#endif
+
+#ifndef MAX /* Usually found in <sys/param.h>. */
+#define MAX(_a,_b) ((_a)<(_b)?(_b):(_a))
+#endif
+#ifndef MIN /* Usually found in <sys/param.h>. */
+#define MIN(_a,_b) ((_a)<(_b)?(_a):(_b))
+#endif
+
+/* Default file permissions. */
+#ifndef DEFFILEMODE /* 4.4BSD extension. */
+#define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
+#endif
+
+#ifndef S_ISDIR /* POSIX 1003.1 file type tests. */
+#define S_ISDIR(m) ((m & 0170000) == 0040000) /* directory */
+#define S_ISCHR(m) ((m & 0170000) == 0020000) /* char special */
+#define S_ISBLK(m) ((m & 0170000) == 0060000) /* block special */
+#define S_ISREG(m) ((m & 0170000) == 0100000) /* regular file */
+#define S_ISFIFO(m) ((m & 0170000) == 0010000) /* fifo */
+#endif
+#ifndef S_ISLNK /* BSD POSIX 1003.1 extensions */
+#define S_ISLNK(m) ((m & 0170000) == 0120000) /* symbolic link */
+#define S_ISSOCK(m) ((m & 0170000) == 0140000) /* socket */
+#endif
+
+/* The type of a va_list. */
+#ifndef _BSD_VA_LIST_ /* 4.4BSD #define. */
+#define _BSD_VA_LIST_ char *
+#endif
+
+#endif /* !_COMPAT_H_ */
--- /dev/null
+../../include/db.h
\ No newline at end of file
--- /dev/null
+../../include/mpool.h
\ No newline at end of file
--- /dev/null
+../../include/ndbm.h
\ No newline at end of file
--- /dev/null
+../../include/queue.h
\ No newline at end of file
--- /dev/null
+/*
+ * Derived from:
+ * static char sccsid[] = "@(#)siglist.c 8.1 (Berkeley) 6/4/93";
+ */
+#include <sys/cdefs.h>
+
+#include <signal.h>
+
+const char *const sys_signame[NSIG] = {
+ "Signal 0",
+ "hup", /* SIGHUP */
+ "int", /* SIGINT */
+ "quit", /* SIGQUIT */
+ "ill", /* SIGILL */
+ "trap", /* SIGTRAP */
+ "abrt", /* SIGABRT */
+ "emt", /* SIGEMT */
+ "fpe", /* SIGFPE */
+ "kill", /* SIGKILL */
+ "bus", /* SIGBUS */
+ "segv", /* SIGSEGV */
+ "sys", /* SIGSYS */
+ "pipe", /* SIGPIPE */
+ "alrm", /* SIGALRM */
+ "term", /* SIGTERM */
+ "usr1", /* SIGUSR1 */
+ "usr2", /* SIGUSR2 */
+ "chld", /* SIGCHLD */
+ "pwr", /* SIGPWR */
+ "vtalrm", /* SIGVTALRM */
+ "prof", /* SIGPROF */
+ "io", /* SIGIO */
+ "winch", /* SIGWINCH */
+ "stop", /* SIGSTOP */
+ "tstp", /* SIGTSTP */
+ "cont", /* SIGCONT */
+ "ttin", /* SIGTTIN */
+ "ttou", /* SIGTTOU */
+ "urg", /* SIGURG */
+ "lost", /* SIGLOST */
+};
+
+const char *const sys_siglist[NSIG] = {
+ "Signal 0",
+ "Hangup", /* SIGHUP */
+ "Interrupt", /* SIGINT */
+ "Quit", /* SIGQUIT */
+ "Illegal instruction", /* SIGILL */
+ "Trace/BPT trap", /* SIGTRAP */
+ "Abort trap", /* SIGABRT */
+ "EMT trap", /* SIGEMT */
+ "Floating point exception", /* SIGFPE */
+ "Killed", /* SIGKILL */
+ "Bus error", /* SIGBUS */
+ "Segmentation fault", /* SIGSEGV */
+ "Bad system call", /* SIGSYS */
+ "Broken pipe", /* SIGPIPE */
+ "Alarm clock", /* SIGALRM */
+ "Terminated", /* SIGTERM */
+ "User defined signal 1", /* SIGUSR1 */
+ "User defined signal 2" /* SIGUSR2 */
+ "Child exited", /* SIGCHLD */
+ "Power failure", /* SIGPWR */
+ "Virtual timer expired", /* SIGVTALRM */
+ "Profiling timer expired", /* SIGPROF */
+ "I/O possible", /* SIGIO */
+ "Window size changes", /* SIGWINCH */
+ "Suspended (signal)", /* SIGSTOP */
+ "Suspended", /* SIGTSTP */
+ "Continued", /* SIGCONT */
+ "Stopped (tty input)", /* SIGTTIN */
+ "Stopped (tty output)", /* SIGTTOU */
+ "Urgent I/O condition", /* SIGURG */
+ "File lock lost", /* SIGLOST */
+};
--- /dev/null
+include
\ No newline at end of file
--- /dev/null
+/*
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Berkeley Software Design, Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)cdefs.h 8.7 (Berkeley) 1/21/94
+ */
+
+#ifndef _CDEFS_H_
+#define _CDEFS_H_
+
+#if defined(__cplusplus)
+#define __BEGIN_DECLS extern "C" {
+#define __END_DECLS };
+#else
+#define __BEGIN_DECLS
+#define __END_DECLS
+#endif
+
+/*
+ * The __CONCAT macro is used to concatenate parts of symbol names, e.g.
+ * with "#define OLD(foo) __CONCAT(old,foo)", OLD(foo) produces oldfoo.
+ * The __CONCAT macro is a bit tricky -- make sure you don't put spaces
+ * in between its arguments. __CONCAT can also concatenate double-quoted
+ * strings produced by the __STRING macro, but this only works with ANSI C.
+ */
+#if defined(__STDC__) || defined(__cplusplus)
+#define __P(protos) protos /* full-blown ANSI C */
+#define __CONCAT(x,y) x ## y
+#define __STRING(x) #x
+
+#define __const const /* define reserved names to standard */
+#define __signed signed
+#define __volatile volatile
+#if defined(__cplusplus)
+#define __inline inline /* convert to C++ keyword */
+#else
+#ifndef __GNUC__
+#define __inline /* delete GCC keyword */
+#endif /* !__GNUC__ */
+#endif /* !__cplusplus */
+
+#else /* !(__STDC__ || __cplusplus) */
+#define __P(protos) () /* traditional C preprocessor */
+#define __CONCAT(x,y) x/**/y
+#define __STRING(x) "x"
+
+#ifndef __GNUC__
+#define __const /* delete pseudo-ANSI C keywords */
+#define __inline
+#define __signed
+#define __volatile
+/*
+ * In non-ANSI C environments, new programs will want ANSI-only C keywords
+ * deleted from the program and old programs will want them left alone.
+ * When using a compiler other than gcc, programs using the ANSI C keywords
+ * const, inline etc. as normal identifiers should define -DNO_ANSI_KEYWORDS.
+ * When using "gcc -traditional", we assume that this is the intent; if
+ * __GNUC__ is defined but __STDC__ is not, we leave the new keywords alone.
+ */
+#ifndef NO_ANSI_KEYWORDS
+#define const /* delete ANSI C keywords */
+#define inline
+#define signed
+#define volatile
+#endif
+#endif /* !__GNUC__ */
+#endif /* !(__STDC__ || __cplusplus) */
+
+/*
+ * GCC1 and some versions of GCC2 declare dead (non-returning) and
+ * pure (no side effects) functions using "volatile" and "const";
+ * unfortunately, these then cause warnings under "-ansi -pedantic".
+ * GCC2 uses a new, peculiar __attribute__((attrs)) style. All of
+ * these work for GNU C++ (modulo a slight glitch in the C++ grammar
+ * in the distribution version of 2.5.5).
+ */
+#if !defined(__GNUC__) || __GNUC__ < 2 || __GNUC_MINOR__ < 5
+#define __attribute__(x) /* delete __attribute__ if non-gcc or gcc1 */
+#if defined(__GNUC__) && !defined(__STRICT_ANSI__)
+#define __dead __volatile
+#define __pure __const
+#endif
+#endif
+
+/* Delete pseudo-keywords wherever they are not available or needed. */
+#ifndef __dead
+#define __dead
+#define __pure
+#endif
+
+#endif /* !_CDEFS_H_ */
--- /dev/null
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)compat.h 8.13 (Berkeley) 2/21/94
+ */
+
+#ifndef _COMPAT_H_
+#define _COMPAT_H_
+
+#include <sys/types.h>
+
+/*
+ * If your system doesn't typedef u_long, u_short, or u_char, change
+ * the 0 to a 1.
+ */
+#if 0
+typedef unsigned char u_char; /* 4.[34]BSD names. */
+typedef unsigned int u_int;
+typedef unsigned long u_long;
+typedef unsigned short u_short;
+#endif
+
+/* If your system doesn't typedef size_t, change the 0 to a 1. */
+#if 0
+typedef unsigned int size_t; /* POSIX, 4.[34]BSD names. */
+#endif
+
+/* If your system doesn't typedef ssize_t, change the 0 to a 1. */
+#if 0
+typedef int ssize_t; /* POSIX names. */
+#endif
+
+/*
+ * If your system doesn't have the POSIX type for a signal mask,
+ * change the 0 to a 1.
+ */
+#if 0 /* POSIX 1003.1 signal mask type. */
+typedef unsigned int sigset_t;
+#endif
+
+/*
+ * If your system's vsprintf returns a char *, not an int,
+ * change the 0 to a 1.
+ */
+#if 0
+#define VSPRINTF_CHARSTAR
+#endif
+
+/*
+ * If you don't have POSIX 1003.1 signals, the signal code surrounding the
+ * temporary file creation is intended to block all of the possible signals
+ * long enough to create the file and unlink it. All of this stuff is
+ * intended to use old-style BSD calls to fake POSIX 1003.1 calls.
+ */
+#ifdef NO_POSIX_SIGNALS
+#define sigemptyset(set) (*(set) = 0)
+#define sigfillset(set) (*(set) = ~(sigset_t)0, 0)
+#define sigaddset(set,signo) (*(set) |= sigmask(signo), 0)
+#define sigdelset(set,signo) (*(set) &= ~sigmask(signo), 0)
+#define sigismember(set,signo) ((*(set) & sigmask(signo)) != 0)
+
+#define SIG_BLOCK 1
+#define SIG_UNBLOCK 2
+#define SIG_SETMASK 3
+
+static int __sigtemp; /* For the use of sigprocmask */
+
+/* Repeated test of oset != NULL is to avoid "*0". */
+#define sigprocmask(how, set, oset) \
+ ((__sigtemp = \
+ (((how) == SIG_BLOCK) ? \
+ sigblock(0) | *(set) : \
+ (((how) == SIG_UNBLOCK) ? \
+ sigblock(0) & ~(*(set)) : \
+ ((how) == SIG_SETMASK ? \
+ *(set) : sigblock(0))))), \
+ ((oset) ? (*(oset ? oset : set) = sigsetmask(__sigtemp)) : \
+ sigsetmask(__sigtemp)), 0)
+#endif
+
+/*
+ * If your system doesn't have an include file with the appropriate
+ * byte order set, make sure you specify the correct one.
+ */
+#ifndef BYTE_ORDER
+#define LITTLE_ENDIAN 1234 /* LSB first: i386, vax */
+#define BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */
+#define BYTE_ORDER BIG_ENDIAN /* Set for your system. */
+#endif
+
+#if defined(SYSV) || defined(SYSTEM5)
+#define index(a, b) strchr(a, b)
+#define rindex(a, b) strrchr(a, b)
+#define bzero(a, b) memset(a, 0, b)
+#define bcmp(a, b, n) memcmp(a, b, n)
+#define bcopy(a, b, n) memmove(b, a, n)
+#endif
+
+#if defined(BSD) || defined(BSD4_3)
+#define strchr(a, b) index(a, b)
+#define strrchr(a, b) rindex(a, b)
+#define memcmp(a, b, n) bcmp(a, b, n)
+#define memmove(a, b, n) bcopy(b, a, n)
+#endif
+
+/*
+ * 32-bit machine. The db routines are theoretically independent of
+ * the size of u_shorts and u_longs, but I don't know that anyone has
+ * ever actually tried it. At a minimum, change the following #define's
+ * if you are trying to compile on a different type of system.
+ */
+#ifndef USHRT_MAX
+#define USHRT_MAX 0xFFFF
+#define ULONG_MAX 0xFFFFFFFF
+#endif
+
+#ifndef O_ACCMODE /* POSIX 1003.1 access mode mask. */
+#define O_ACCMODE (O_RDONLY|O_WRONLY|O_RDWR)
+#endif
+
+#ifndef _POSIX2_RE_DUP_MAX /* POSIX 1003.2 RE limit. */
+#define _POSIX2_RE_DUP_MAX 255
+#endif
+
+/*
+ * If you can't provide lock values in the open(2) call. Note, this
+ * allows races to happen.
+ */
+#ifndef O_EXLOCK /* 4.4BSD extension. */
+#define O_EXLOCK 0
+#endif
+
+#ifndef O_SHLOCK /* 4.4BSD extension. */
+#define O_SHLOCK 0
+#endif
+
+#ifndef EFTYPE
+#define EFTYPE EINVAL /* POSIX 1003.1 format errno. */
+#endif
+
+#ifndef WCOREDUMP /* 4.4BSD extension */
+#define WCOREDUMP(a) 0
+#endif
+
+#ifndef STDERR_FILENO
+#define STDIN_FILENO 0 /* ANSI C #defines */
+#define STDOUT_FILENO 1
+#define STDERR_FILENO 2
+#endif
+
+#ifndef SEEK_END
+#define SEEK_SET 0 /* POSIX 1003.1 seek values */
+#define SEEK_CUR 1
+#define SEEK_END 2
+#endif
+
+#ifndef _POSIX_VDISABLE /* POSIX 1003.1 disabling char. */
+#define _POSIX_VDISABLE 0 /* Some systems used 0. */
+#endif
+
+#ifndef TCSASOFT /* 4.4BSD extension. */
+#define TCSASOFT 0
+#endif
+
+#ifndef _POSIX2_RE_DUP_MAX /* POSIX 1003.2 values. */
+#define _POSIX2_RE_DUP_MAX 255
+#endif
+
+#ifndef NULL /* ANSI C #defines NULL everywhere. */
+#define NULL 0
+#endif
+
+#ifndef MAX /* Usually found in <sys/param.h>. */
+#define MAX(_a,_b) ((_a)<(_b)?(_b):(_a))
+#endif
+#ifndef MIN /* Usually found in <sys/param.h>. */
+#define MIN(_a,_b) ((_a)<(_b)?(_a):(_b))
+#endif
+
+/* Default file permissions. */
+#ifndef DEFFILEMODE /* 4.4BSD extension. */
+#define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
+#endif
+
+#ifndef S_ISDIR /* POSIX 1003.1 file type tests. */
+#define S_ISDIR(m) ((m & 0170000) == 0040000) /* directory */
+#define S_ISCHR(m) ((m & 0170000) == 0020000) /* char special */
+#define S_ISBLK(m) ((m & 0170000) == 0060000) /* block special */
+#define S_ISREG(m) ((m & 0170000) == 0100000) /* regular file */
+#define S_ISFIFO(m) ((m & 0170000) == 0010000) /* fifo */
+#endif
+#ifndef S_ISLNK /* BSD POSIX 1003.1 extensions */
+#define S_ISLNK(m) ((m & 0170000) == 0120000) /* symbolic link */
+#define S_ISSOCK(m) ((m & 0170000) == 0140000) /* socket */
+#endif
+
+/* The type of a va_list. */
+#ifndef _BSD_VA_LIST_ /* 4.4BSD #define. */
+#define _BSD_VA_LIST_ char *
+#endif
+
+#endif /* !_COMPAT_H_ */
--- /dev/null
+../../include/db.h
\ No newline at end of file
--- /dev/null
+../../include/mpool.h
\ No newline at end of file
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)ndbm.h 8.1 (Berkeley) 6/2/93
+ */
+
+#ifndef _NDBM_H_
+#define _NDBM_H_
+
+#include <db.h>
+
+/* Map dbm interface onto db(3). */
+#define DBM_RDONLY O_RDONLY
+
+/* Flags to dbm_store(). */
+#define DBM_INSERT 0
+#define DBM_REPLACE 1
+
+/*
+ * The db(3) support for ndbm(3) always appends this suffix to the
+ * file name to avoid overwriting the user's original database.
+ */
+#define DBM_SUFFIX ".db"
+
+typedef struct {
+ char *dptr;
+ int dsize;
+} datum;
+
+typedef DB DBM;
+#define dbm_pagfno(a) DBM_PAGFNO_NOT_AVAILABLE
+
+__BEGIN_DECLS
+void dbm_close __P((DBM *));
+int dbm_delete __P((DBM *, datum));
+datum dbm_fetch __P((DBM *, datum));
+datum dbm_firstkey __P((DBM *));
+long dbm_forder __P((DBM *, datum));
+datum dbm_nextkey __P((DBM *));
+DBM *dbm_open __P((const char *, int, int));
+int dbm_store __P((DBM *, datum, datum, int));
+int dbm_dirfno __P((DBM *));
+__END_DECLS
+
+#endif /* !_NDBM_H_ */
--- /dev/null
+/*
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)queue.h 8.3 (Berkeley) 12/13/93
+ */
+
+#ifndef _QUEUE_H_
+#define _QUEUE_H_
+
+/*
+ * This file defines three types of data structures: lists, tail queues,
+ * and circular queues.
+ *
+ * A list is headed by a single forward pointer (or an array of forward
+ * pointers for a hash table header). The elements are doubly linked
+ * so that an arbitrary element can be removed without a need to
+ * traverse the list. New elements can be added to the list after
+ * an existing element or at the head of the list. A list may only be
+ * traversed in the forward direction.
+ *
+ * A tail queue is headed by a pair of pointers, one to the head of the
+ * list and the other to the tail of the list. The elements are doubly
+ * linked so that an arbitrary element can be removed without a need to
+ * traverse the list. New elements can be added to the list after
+ * an existing element, at the head of the list, or at the end of the
+ * list. A tail queue may only be traversed in the forward direction.
+ *
+ * A circle queue is headed by a pair of pointers, one to the head of the
+ * list and the other to the tail of the list. The elements are doubly
+ * linked so that an arbitrary element can be removed without a need to
+ * traverse the list. New elements can be added to the list before or after
+ * an existing element, at the head of the list, or at the end of the list.
+ * A circle queue may be traversed in either direction, but has a more
+ * complex end of list detection.
+ *
+ * For details on the use of these macros, see the queue(3) manual page.
+ */
+
+/*
+ * List definitions.
+ */
+#define LIST_HEAD(name, type) \
+struct name { \
+ struct type *lh_first; /* first element */ \
+}
+
+#define LIST_ENTRY(type) \
+struct { \
+ struct type *le_next; /* next element */ \
+ struct type **le_prev; /* address of previous next element */ \
+}
+
+/*
+ * List functions.
+ */
+#define LIST_INIT(head) { \
+ (head)->lh_first = NULL; \
+}
+
+#define LIST_INSERT_AFTER(listelm, elm, field) { \
+ if (((elm)->field.le_next = (listelm)->field.le_next) != NULL) \
+ (listelm)->field.le_next->field.le_prev = \
+ &(elm)->field.le_next; \
+ (listelm)->field.le_next = (elm); \
+ (elm)->field.le_prev = &(listelm)->field.le_next; \
+}
+
+#define LIST_INSERT_HEAD(head, elm, field) { \
+ if (((elm)->field.le_next = (head)->lh_first) != NULL) \
+ (head)->lh_first->field.le_prev = &(elm)->field.le_next;\
+ (head)->lh_first = (elm); \
+ (elm)->field.le_prev = &(head)->lh_first; \
+}
+
+#define LIST_REMOVE(elm, field) { \
+ if ((elm)->field.le_next != NULL) \
+ (elm)->field.le_next->field.le_prev = \
+ (elm)->field.le_prev; \
+ *(elm)->field.le_prev = (elm)->field.le_next; \
+}
+
+/*
+ * Tail queue definitions.
+ */
+#define TAILQ_HEAD(name, type) \
+struct name { \
+ struct type *tqh_first; /* first element */ \
+ struct type **tqh_last; /* addr of last next element */ \
+}
+
+#define TAILQ_ENTRY(type) \
+struct { \
+ struct type *tqe_next; /* next element */ \
+ struct type **tqe_prev; /* address of previous next element */ \
+}
+
+/*
+ * Tail queue functions.
+ */
+#define TAILQ_INIT(head) { \
+ (head)->tqh_first = NULL; \
+ (head)->tqh_last = &(head)->tqh_first; \
+}
+
+#define TAILQ_INSERT_HEAD(head, elm, field) { \
+ if (((elm)->field.tqe_next = (head)->tqh_first) != NULL) \
+ (elm)->field.tqe_next->field.tqe_prev = \
+ &(elm)->field.tqe_next; \
+ else \
+ (head)->tqh_last = &(elm)->field.tqe_next; \
+ (head)->tqh_first = (elm); \
+ (elm)->field.tqe_prev = &(head)->tqh_first; \
+}
+
+#define TAILQ_INSERT_TAIL(head, elm, field) { \
+ (elm)->field.tqe_next = NULL; \
+ (elm)->field.tqe_prev = (head)->tqh_last; \
+ *(head)->tqh_last = (elm); \
+ (head)->tqh_last = &(elm)->field.tqe_next; \
+}
+
+#define TAILQ_INSERT_AFTER(head, listelm, elm, field) { \
+ if (((elm)->field.tqe_next = (listelm)->field.tqe_next) != NULL)\
+ (elm)->field.tqe_next->field.tqe_prev = \
+ &(elm)->field.tqe_next; \
+ else \
+ (head)->tqh_last = &(elm)->field.tqe_next; \
+ (listelm)->field.tqe_next = (elm); \
+ (elm)->field.tqe_prev = &(listelm)->field.tqe_next; \
+}
+
+#define TAILQ_REMOVE(head, elm, field) { \
+ if (((elm)->field.tqe_next) != NULL) \
+ (elm)->field.tqe_next->field.tqe_prev = \
+ (elm)->field.tqe_prev; \
+ else \
+ (head)->tqh_last = (elm)->field.tqe_prev; \
+ *(elm)->field.tqe_prev = (elm)->field.tqe_next; \
+}
+
+/*
+ * Circular queue definitions.
+ */
+#define CIRCLEQ_HEAD(name, type) \
+struct name { \
+ struct type *cqh_first; /* first element */ \
+ struct type *cqh_last; /* last element */ \
+}
+
+#define CIRCLEQ_ENTRY(type) \
+struct { \
+ struct type *cqe_next; /* next element */ \
+ struct type *cqe_prev; /* previous element */ \
+}
+
+/*
+ * Circular queue functions.
+ */
+#define CIRCLEQ_INIT(head) { \
+ (head)->cqh_first = (void *)(head); \
+ (head)->cqh_last = (void *)(head); \
+}
+
+#define CIRCLEQ_INSERT_AFTER(head, listelm, elm, field) { \
+ (elm)->field.cqe_next = (listelm)->field.cqe_next; \
+ (elm)->field.cqe_prev = (listelm); \
+ if ((listelm)->field.cqe_next == (void *)(head)) \
+ (head)->cqh_last = (elm); \
+ else \
+ (listelm)->field.cqe_next->field.cqe_prev = (elm); \
+ (listelm)->field.cqe_next = (elm); \
+}
+
+#define CIRCLEQ_INSERT_BEFORE(head, listelm, elm, field) { \
+ (elm)->field.cqe_next = (listelm); \
+ (elm)->field.cqe_prev = (listelm)->field.cqe_prev; \
+ if ((listelm)->field.cqe_prev == (void *)(head)) \
+ (head)->cqh_first = (elm); \
+ else \
+ (listelm)->field.cqe_prev->field.cqe_next = (elm); \
+ (listelm)->field.cqe_prev = (elm); \
+}
+
+#define CIRCLEQ_INSERT_HEAD(head, elm, field) { \
+ (elm)->field.cqe_next = (head)->cqh_first; \
+ (elm)->field.cqe_prev = (void *)(head); \
+ if ((head)->cqh_last == (void *)(head)) \
+ (head)->cqh_last = (elm); \
+ else \
+ (head)->cqh_first->field.cqe_prev = (elm); \
+ (head)->cqh_first = (elm); \
+}
+
+#define CIRCLEQ_INSERT_TAIL(head, elm, field) { \
+ (elm)->field.cqe_next = (void *)(head); \
+ (elm)->field.cqe_prev = (head)->cqh_last; \
+ if ((head)->cqh_first == (void *)(head)) \
+ (head)->cqh_first = (elm); \
+ else \
+ (head)->cqh_last->field.cqe_next = (elm); \
+ (head)->cqh_last = (elm); \
+}
+
+#define CIRCLEQ_REMOVE(head, elm, field) { \
+ if ((elm)->field.cqe_next == (void *)(head)) \
+ (head)->cqh_last = (elm)->field.cqe_prev; \
+ else \
+ (elm)->field.cqe_next->field.cqe_prev = \
+ (elm)->field.cqe_prev; \
+ if ((elm)->field.cqe_prev == (void *)(head)) \
+ (head)->cqh_first = (elm)->field.cqe_next; \
+ else \
+ (elm)->field.cqe_prev->field.cqe_next = \
+ (elm)->field.cqe_next; \
+}
+#endif /* !_QUEUE_H_ */
--- /dev/null
+# @(#)Makefile 8.9 (Berkeley) 7/14/94
+
+LIBDB= libdb.a
+OBJ1= hash.o hash_bigkey.o hash_buf.o hash_func.o hash_log2.o hash_page.o \
+ hsearch.o ndbm.o
+OBJ2= bt_close.o bt_conv.o bt_debug.o bt_delete.o bt_get.o bt_open.o \
+ bt_overflow.o bt_page.o bt_put.o bt_search.o bt_seq.o bt_split.o \
+ bt_utils.o
+OBJ3= db.o
+OBJ4= mpool.o
+OBJ5= rec_close.o rec_delete.o rec_get.o rec_open.o rec_put.o rec_search.o \
+ rec_seq.o rec_utils.o
+
+MISC= snprintf.o
+
+${LIBDB}: ${OBJ1} ${OBJ2} ${OBJ3} ${OBJ4} ${OBJ5} ${MISC}
+ rm -f $@
+ ar cq $@ \
+ `lorder ${OBJ1} ${OBJ2} ${OBJ3} ${OBJ4} ${OBJ5} ${MISC} | tsort`
+ ranlib $@
+
+clean:
+ rm -f ${LIBDB} ${OBJ1} ${OBJ2} ${OBJ3} ${OBJ4} ${OBJ5} ${MISC}
+
+CC= cc -cckr -D_BSD_COMPAT
+OORG= -O
+CL= ${CC} -c -D__DBINTERFACE_PRIVATE ${OORG} -I. -Iinclude
+
+hash.o: ../../hash/hash.c
+ ${CL} -I../../hash ../../hash/hash.c
+hash_bigkey.o: ../../hash/hash_bigkey.c
+ ${CL} -I../../hash ../../hash/hash_bigkey.c
+hash_buf.o: ../../hash/hash_buf.c
+ ${CL} -I../../hash ../../hash/hash_buf.c
+hash_func.o: ../../hash/hash_func.c
+ ${CL} -I../../hash ../../hash/hash_func.c
+hash_log2.o: ../../hash/hash_log2.c
+ ${CL} -I../../hash ../../hash/hash_log2.c
+hash_page.o: ../../hash/hash_page.c
+ ${CL} -I../../hash ../../hash/hash_page.c
+hsearch.o: ../../hash/hsearch.c
+ ${CL} -I../../hash ../../hash/hsearch.c
+ndbm.o: ../../hash/ndbm.c
+ ${CL} -I../../hash ../../hash/ndbm.c
+
+bt_close.o: ../../btree/bt_close.c
+ ${CL} -I../../btree ../../btree/bt_close.c
+bt_conv.o: ../../btree/bt_conv.c
+ ${CL} -I../../btree ../../btree/bt_conv.c
+bt_debug.o: ../../btree/bt_debug.c
+ ${CL} -I../../btree ../../btree/bt_debug.c
+bt_delete.o: ../../btree/bt_delete.c
+ ${CL} -I../../btree ../../btree/bt_delete.c
+bt_get.o: ../../btree/bt_get.c
+ ${CL} -I../../btree ../../btree/bt_get.c
+bt_open.o: ../../btree/bt_open.c
+ ${CL} -I../../btree ../../btree/bt_open.c
+bt_overflow.o: ../../btree/bt_overflow.c
+ ${CL} -I../../btree ../../btree/bt_overflow.c
+bt_page.o: ../../btree/bt_page.c
+ ${CL} -I../../btree ../../btree/bt_page.c
+bt_put.o: ../../btree/bt_put.c
+ ${CL} -I../../btree ../../btree/bt_put.c
+bt_search.o: ../../btree/bt_search.c
+ ${CL} -I../../btree ../../btree/bt_search.c
+bt_seq.o: ../../btree/bt_seq.c
+ ${CL} -I../../btree ../../btree/bt_seq.c
+bt_split.o: ../../btree/bt_split.c
+ ${CL} -I../../btree ../../btree/bt_split.c
+bt_stack.o: ../../btree/bt_stack.c
+ ${CL} -I../../btree ../../btree/bt_stack.c
+bt_utils.o: ../../btree/bt_utils.c
+ ${CL} -I../../btree ../../btree/bt_utils.c
+
+db.o: ../../db/db.c
+ ${CL} ../../db/db.c
+
+mpool.o: ../../mpool/mpool.c
+ ${CL} -I../../mpool ../../mpool/mpool.c
+
+rec_close.o: ../../recno/rec_close.c
+ ${CL} -I../../recno ../../recno/rec_close.c
+rec_delete.o: ../../recno/rec_delete.c
+ ${CL} -I../../recno ../../recno/rec_delete.c
+rec_get.o: ../../recno/rec_get.c
+ ${CL} -I../../recno ../../recno/rec_get.c
+rec_open.o: ../../recno/rec_open.c
+ ${CL} -I../../recno ../../recno/rec_open.c
+rec_put.o: ../../recno/rec_put.c
+ ${CL} -I../../recno ../../recno/rec_put.c
+rec_search.o: ../../recno/rec_search.c
+ ${CL} -I../../recno ../../recno/rec_search.c
+rec_seq.o: ../../recno/rec_seq.c
+ ${CL} -I../../recno ../../recno/rec_seq.c
+rec_utils.o: ../../recno/rec_utils.c
+ ${CL} -I../../recno ../../recno/rec_utils.c
+
+memmove.o:
+ ${CC} -DMEMMOVE -c -O -I. -Iinclude clib/memmove.c
+mktemp.o:
+ ${CC} -c -O -I. -Iinclude clib/mktemp.c
+snprintf.o:
+ ${CC} -c -O -I. -Iinclude clib/snprintf.c
--- /dev/null
+*** PORT/db/btree/bt_open.c.dist Thu Sep 16 14:42:22 1993
+--- PORT/db/btree/bt_open.c Mon Nov 8 07:03:40 1993
+***************
+*** 256,262 ****
+--- 256,266 ----
+ * Don't overflow the page offset type.
+ */
+ if (b.psize == 0) {
++ #ifndef sgi
+ b.psize = sb.st_blksize;
++ #else
++ b.psize = 4096;
++ #endif /* sgi */
+ if (b.psize < MINPSIZE)
+ b.psize = MINPSIZE;
+ if (b.psize > MAX_PAGE_OFFSET + 1)
+*** PORT/db/hash/hash.c.dist Thu Nov 4 15:32:16 1993
+--- PORT/db/hash/hash.c Mon Nov 8 07:05:12 1993
+***************
+*** 301,307 ****
+--- 301,311 ----
+ if (file != NULL) {
+ if (stat(file, &statbuf))
+ return (NULL);
++ #ifndef sgi
+ hashp->BSIZE = statbuf.st_blksize;
++ #else
++ hashp->BSIZE = 4096;
++ #endif /* sgi */
+ hashp->BSHIFT = __log2(hashp->BSIZE);
+ }
+
--- /dev/null
+../clib
\ No newline at end of file
--- /dev/null
+../../include/cdefs.h
\ No newline at end of file
--- /dev/null
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)compat.h 8.13 (Berkeley) 2/21/94
+ */
+
+#ifndef _COMPAT_H_
+#define _COMPAT_H_
+
+#include <sys/types.h>
+
+/*
+ * If your system doesn't typedef u_long, u_short, or u_char, change
+ * the 0 to a 1.
+ */
+#if 0
+typedef unsigned char u_char; /* 4.[34]BSD names. */
+typedef unsigned int u_int;
+typedef unsigned long u_long;
+typedef unsigned short u_short;
+#endif
+
+/* If your system doesn't typedef size_t, change the 0 to a 1. */
+#if 0
+typedef unsigned int size_t; /* POSIX, 4.[34]BSD names. */
+#endif
+
+/* If your system doesn't typedef ssize_t, change the 0 to a 1. */
+#if 0
+typedef int ssize_t; /* POSIX names. */
+#endif
+
+/*
+ * If your system doesn't have the POSIX type for a signal mask,
+ * change the 0 to a 1.
+ */
+#if 0 /* POSIX 1003.1 signal mask type. */
+typedef unsigned int sigset_t;
+#endif
+
+/*
+ * If your system's vsprintf returns a char *, not an int,
+ * change the 0 to a 1.
+ */
+#if 0
+#define VSPRINTF_CHARSTAR
+#endif
+
+/*
+ * If you don't have POSIX 1003.1 signals, the signal code surrounding the
+ * temporary file creation is intended to block all of the possible signals
+ * long enough to create the file and unlink it. All of this stuff is
+ * intended to use old-style BSD calls to fake POSIX 1003.1 calls.
+ */
+#ifdef NO_POSIX_SIGNALS
+#define sigemptyset(set) (*(set) = 0)
+#define sigfillset(set) (*(set) = ~(sigset_t)0, 0)
+#define sigaddset(set,signo) (*(set) |= sigmask(signo), 0)
+#define sigdelset(set,signo) (*(set) &= ~sigmask(signo), 0)
+#define sigismember(set,signo) ((*(set) & sigmask(signo)) != 0)
+
+#define SIG_BLOCK 1
+#define SIG_UNBLOCK 2
+#define SIG_SETMASK 3
+
+static int __sigtemp; /* For the use of sigprocmask */
+
+/* Repeated test of oset != NULL is to avoid "*0". */
+#define sigprocmask(how, set, oset) \
+ ((__sigtemp = \
+ (((how) == SIG_BLOCK) ? \
+ sigblock(0) | *(set) : \
+ (((how) == SIG_UNBLOCK) ? \
+ sigblock(0) & ~(*(set)) : \
+ ((how) == SIG_SETMASK ? \
+ *(set) : sigblock(0))))), \
+ ((oset) ? (*(oset ? oset : set) = sigsetmask(__sigtemp)) : \
+ sigsetmask(__sigtemp)), 0)
+#endif
+
+/*
+ * If your system doesn't have an include file with the appropriate
+ * byte order set, make sure you specify the correct one.
+ */
+#ifndef BYTE_ORDER
+#define LITTLE_ENDIAN 1234 /* LSB first: i386, vax */
+#define BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */
+#define BYTE_ORDER BIG_ENDIAN /* Set for your system. */
+#endif
+
+#if defined(SYSV) || defined(SYSTEM5)
+#define index(a, b) strchr(a, b)
+#define rindex(a, b) strrchr(a, b)
+#define bzero(a, b) memset(a, 0, b)
+#define bcmp(a, b, n) memcmp(a, b, n)
+#define bcopy(a, b, n) memmove(b, a, n)
+#endif
+
+#if defined(BSD) || defined(BSD4_3)
+#define strchr(a, b) index(a, b)
+#define strrchr(a, b) rindex(a, b)
+#define memcmp(a, b, n) bcmp(a, b, n)
+#define memmove(a, b, n) bcopy(b, a, n)
+#endif
+
+/*
+ * 32-bit machine. The db routines are theoretically independent of
+ * the size of u_shorts and u_longs, but I don't know that anyone has
+ * ever actually tried it. At a minimum, change the following #define's
+ * if you are trying to compile on a different type of system.
+ */
+#ifndef USHRT_MAX
+#define USHRT_MAX 0xFFFF
+#define ULONG_MAX 0xFFFFFFFF
+#endif
+
+#ifndef O_ACCMODE /* POSIX 1003.1 access mode mask. */
+#define O_ACCMODE (O_RDONLY|O_WRONLY|O_RDWR)
+#endif
+
+#ifndef _POSIX2_RE_DUP_MAX /* POSIX 1003.2 RE limit. */
+#define _POSIX2_RE_DUP_MAX 255
+#endif
+
+/*
+ * If you can't provide lock values in the open(2) call. Note, this
+ * allows races to happen.
+ */
+#ifndef O_EXLOCK /* 4.4BSD extension. */
+#define O_EXLOCK 0
+#endif
+
+#ifndef O_SHLOCK /* 4.4BSD extension. */
+#define O_SHLOCK 0
+#endif
+
+#ifndef EFTYPE
+#define EFTYPE EINVAL /* POSIX 1003.1 format errno. */
+#endif
+
+#ifndef WCOREDUMP /* 4.4BSD extension */
+#define WCOREDUMP(a) 0
+#endif
+
+#ifndef STDERR_FILENO
+#define STDIN_FILENO 0 /* ANSI C #defines */
+#define STDOUT_FILENO 1
+#define STDERR_FILENO 2
+#endif
+
+#ifndef SEEK_END
+#define SEEK_SET 0 /* POSIX 1003.1 seek values */
+#define SEEK_CUR 1
+#define SEEK_END 2
+#endif
+
+#ifndef _POSIX_VDISABLE /* POSIX 1003.1 disabling char. */
+#define _POSIX_VDISABLE 0 /* Some systems used 0. */
+#endif
+
+#ifndef TCSASOFT /* 4.4BSD extension. */
+#define TCSASOFT 0
+#endif
+
+#ifndef _POSIX2_RE_DUP_MAX /* POSIX 1003.2 values. */
+#define _POSIX2_RE_DUP_MAX 255
+#endif
+
+#ifndef NULL /* ANSI C #defines NULL everywhere. */
+#define NULL 0
+#endif
+
+#ifndef MAX /* Usually found in <sys/param.h>. */
+#define MAX(_a,_b) ((_a)<(_b)?(_b):(_a))
+#endif
+#ifndef MIN /* Usually found in <sys/param.h>. */
+#define MIN(_a,_b) ((_a)<(_b)?(_a):(_b))
+#endif
+
+/* Default file permissions. */
+#ifndef DEFFILEMODE /* 4.4BSD extension. */
+#define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
+#endif
+
+#ifndef S_ISDIR /* POSIX 1003.1 file type tests. */
+#define S_ISDIR(m) ((m & 0170000) == 0040000) /* directory */
+#define S_ISCHR(m) ((m & 0170000) == 0020000) /* char special */
+#define S_ISBLK(m) ((m & 0170000) == 0060000) /* block special */
+#define S_ISREG(m) ((m & 0170000) == 0100000) /* regular file */
+#define S_ISFIFO(m) ((m & 0170000) == 0010000) /* fifo */
+#endif
+#ifndef S_ISLNK /* BSD POSIX 1003.1 extensions */
+#define S_ISLNK(m) ((m & 0170000) == 0120000) /* symbolic link */
+#define S_ISSOCK(m) ((m & 0170000) == 0140000) /* socket */
+#endif
+
+/* The type of a va_list. */
+#ifndef _BSD_VA_LIST_ /* 4.4BSD #define. */
+#define _BSD_VA_LIST_ char *
+#endif
+
+#endif /* !_COMPAT_H_ */
--- /dev/null
+../../include/db.h
\ No newline at end of file
--- /dev/null
+../../include/mpool.h
\ No newline at end of file
--- /dev/null
+../../include/ndbm.h
\ No newline at end of file
--- /dev/null
+../../include/queue.h
\ No newline at end of file
--- /dev/null
+include
\ No newline at end of file
--- /dev/null
+# @(#)Makefile 8.9 (Berkeley) 7/14/94
+
+LIBDB= libdb.a
+OBJ1= hash.o hash_bigkey.o hash_buf.o hash_func.o hash_log2.o hash_page.o \
+ hsearch.o ndbm.o
+OBJ2= bt_close.o bt_conv.o bt_debug.o bt_delete.o bt_get.o bt_open.o \
+ bt_overflow.o bt_page.o bt_put.o bt_search.o bt_seq.o bt_split.o \
+ bt_utils.o
+OBJ3= db.o
+OBJ4= mpool.o
+OBJ5= rec_close.o rec_delete.o rec_get.o rec_open.o rec_put.o rec_search.o \
+ rec_seq.o rec_utils.o
+
+MISC= snprintf.o
+
+${LIBDB}: ${OBJ1} ${OBJ2} ${OBJ3} ${OBJ4} ${OBJ5} ${MISC}
+ rm -f $@
+ ar cq $@ \
+ `lorder ${OBJ1} ${OBJ2} ${OBJ3} ${OBJ4} ${OBJ5} ${MISC} | tsort`
+ ranlib $@
+
+clean:
+ rm -f ${LIBDB} ${OBJ1} ${OBJ2} ${OBJ3} ${OBJ4} ${OBJ5} ${MISC}
+
+OORG= -O
+CL= ${CC} -c -D__DBINTERFACE_PRIVATE ${OORG} -I. -Iinclude
+
+hash.o: ../../hash/hash.c
+ ${CL} -I../../hash ../../hash/hash.c
+hash_bigkey.o: ../../hash/hash_bigkey.c
+ ${CL} -I../../hash ../../hash/hash_bigkey.c
+hash_buf.o: ../../hash/hash_buf.c
+ ${CL} -I../../hash ../../hash/hash_buf.c
+hash_func.o: ../../hash/hash_func.c
+ ${CL} -I../../hash ../../hash/hash_func.c
+hash_log2.o: ../../hash/hash_log2.c
+ ${CL} -I../../hash ../../hash/hash_log2.c
+hash_page.o: ../../hash/hash_page.c
+ ${CL} -I../../hash ../../hash/hash_page.c
+hsearch.o: ../../hash/hsearch.c
+ ${CL} -I../../hash ../../hash/hsearch.c
+ndbm.o: ../../hash/ndbm.c
+ ${CL} -I../../hash ../../hash/ndbm.c
+
+bt_close.o: ../../btree/bt_close.c
+ ${CL} -I../../btree ../../btree/bt_close.c
+bt_conv.o: ../../btree/bt_conv.c
+ ${CL} -I../../btree ../../btree/bt_conv.c
+bt_debug.o: ../../btree/bt_debug.c
+ ${CL} -I../../btree ../../btree/bt_debug.c
+bt_delete.o: ../../btree/bt_delete.c
+ ${CL} -I../../btree ../../btree/bt_delete.c
+bt_get.o: ../../btree/bt_get.c
+ ${CL} -I../../btree ../../btree/bt_get.c
+bt_open.o: ../../btree/bt_open.c
+ ${CL} -I../../btree ../../btree/bt_open.c
+bt_overflow.o: ../../btree/bt_overflow.c
+ ${CL} -I../../btree ../../btree/bt_overflow.c
+bt_page.o: ../../btree/bt_page.c
+ ${CL} -I../../btree ../../btree/bt_page.c
+bt_put.o: ../../btree/bt_put.c
+ ${CL} -I../../btree ../../btree/bt_put.c
+bt_search.o: ../../btree/bt_search.c
+ ${CL} -I../../btree ../../btree/bt_search.c
+bt_seq.o: ../../btree/bt_seq.c
+ ${CL} -I../../btree ../../btree/bt_seq.c
+bt_split.o: ../../btree/bt_split.c
+ ${CL} -I../../btree ../../btree/bt_split.c
+bt_stack.o: ../../btree/bt_stack.c
+ ${CL} -I../../btree ../../btree/bt_stack.c
+bt_utils.o: ../../btree/bt_utils.c
+ ${CL} -I../../btree ../../btree/bt_utils.c
+
+db.o: ../../db/db.c
+ ${CL} ../../db/db.c
+
+mpool.o: ../../mpool/mpool.c
+ ${CL} -I../../mpool ../../mpool/mpool.c
+
+rec_close.o: ../../recno/rec_close.c
+ ${CL} -I../../recno ../../recno/rec_close.c
+rec_delete.o: ../../recno/rec_delete.c
+ ${CL} -I../../recno ../../recno/rec_delete.c
+rec_get.o: ../../recno/rec_get.c
+ ${CL} -I../../recno ../../recno/rec_get.c
+rec_open.o: ../../recno/rec_open.c
+ ${CL} -I../../recno ../../recno/rec_open.c
+rec_put.o: ../../recno/rec_put.c
+ ${CL} -I../../recno ../../recno/rec_put.c
+rec_search.o: ../../recno/rec_search.c
+ ${CL} -I../../recno ../../recno/rec_search.c
+rec_seq.o: ../../recno/rec_seq.c
+ ${CL} -I../../recno ../../recno/rec_seq.c
+rec_utils.o: ../../recno/rec_utils.c
+ ${CL} -I../../recno ../../recno/rec_utils.c
+
+memmove.o:
+ ${CC} -DMEMMOVE -c -O -I. -Iinclude clib/memmove.c
+mktemp.o:
+ ${CC} -c -O -I. -Iinclude clib/mktemp.c
+snprintf.o:
+ ${CC} -c -O -I. -Iinclude clib/snprintf.c
--- /dev/null
+*** PORT/db/recno/rec_open.c.orig 1993/10/13 02:01:31
+--- PORT/db/recno/rec_open.c 1993/10/13 02:20:47
+***************
+*** 159,167 ****
+--- 159,182 ----
+ SET(t, R_EOF);
+ else {
+ t->bt_msize = sb.st_size;
++ /*
++ * hack :
++ *
++ * The Linux kernel mmap() semantics are broken :
++ *
++ * Under Linux, read only private mappings cause write only and read/write
++ * opens to fail with errno=ETXTBSY. Shared read only mappings should work
++ * fine though, but I'm not familiar enough with the code to ascertain that
++ * a MAP_SHARED mapping would be safe so I use the non-mmap'd version
++ * instead.
++ *
++ */
++
++ #if !defined(linux)
+ if ((t->bt_smap = mmap(NULL, t->bt_msize,
+ PROT_READ, MAP_PRIVATE, rfd,
+ (off_t)0)) == (caddr_t)-1)
++ #endif
+ goto slow;
+ t->bt_cmap = t->bt_smap;
+ t->bt_emap = t->bt_smap + sb.st_size;
--- /dev/null
+../clib
\ No newline at end of file
--- /dev/null
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)compat.h 8.13 (Berkeley) 2/21/94
+ */
+
+#ifndef _COMPAT_H_
+#define _COMPAT_H_
+
+#include <sys/types.h>
+
+/*
+ * If your system doesn't typedef u_long, u_short, or u_char, change
+ * the 0 to a 1.
+ */
+#if 0
+typedef unsigned char u_char; /* 4.[34]BSD names. */
+typedef unsigned int u_int;
+typedef unsigned long u_long;
+typedef unsigned short u_short;
+#endif
+
+/* If your system doesn't typedef size_t, change the 0 to a 1. */
+#if 0
+typedef unsigned int size_t; /* POSIX, 4.[34]BSD names. */
+#endif
+
+/* If your system doesn't typedef ssize_t, change the 0 to a 1. */
+#if 0
+typedef int ssize_t; /* POSIX names. */
+#endif
+
+/*
+ * If your system doesn't have the POSIX type for a signal mask,
+ * change the 0 to a 1.
+ */
+#if 0 /* POSIX 1003.1 signal mask type. */
+typedef unsigned int sigset_t;
+#endif
+
+/*
+ * If your system's vsprintf returns a char *, not an int,
+ * change the 0 to a 1.
+ */
+#if 0
+#define VSPRINTF_CHARSTAR
+#endif
+
+/*
+ * If you don't have POSIX 1003.1 signals, the signal code surrounding the
+ * temporary file creation is intended to block all of the possible signals
+ * long enough to create the file and unlink it. All of this stuff is
+ * intended to use old-style BSD calls to fake POSIX 1003.1 calls.
+ */
+#ifdef NO_POSIX_SIGNALS
+#define sigemptyset(set) (*(set) = 0)
+#define sigfillset(set) (*(set) = ~(sigset_t)0, 0)
+#define sigaddset(set,signo) (*(set) |= sigmask(signo), 0)
+#define sigdelset(set,signo) (*(set) &= ~sigmask(signo), 0)
+#define sigismember(set,signo) ((*(set) & sigmask(signo)) != 0)
+
+#define SIG_BLOCK 1
+#define SIG_UNBLOCK 2
+#define SIG_SETMASK 3
+
+static int __sigtemp; /* For the use of sigprocmask */
+
+/* Repeated test of oset != NULL is to avoid "*0". */
+#define sigprocmask(how, set, oset) \
+ ((__sigtemp = \
+ (((how) == SIG_BLOCK) ? \
+ sigblock(0) | *(set) : \
+ (((how) == SIG_UNBLOCK) ? \
+ sigblock(0) & ~(*(set)) : \
+ ((how) == SIG_SETMASK ? \
+ *(set) : sigblock(0))))), \
+ ((oset) ? (*(oset ? oset : set) = sigsetmask(__sigtemp)) : \
+ sigsetmask(__sigtemp)), 0)
+#endif
+
+/*
+ * If your system doesn't have an include file with the appropriate
+ * byte order set, make sure you specify the correct one.
+ */
+#ifndef BYTE_ORDER
+#define LITTLE_ENDIAN 1234 /* LSB first: i386, vax */
+#define BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */
+#define BYTE_ORDER LITTLE_ENDIAN /* Set for your system. */
+#endif
+
+#if defined(SYSV) || defined(SYSTEM5)
+#define index(a, b) strchr(a, b)
+#define rindex(a, b) strrchr(a, b)
+#define bzero(a, b) memset(a, 0, b)
+#define bcmp(a, b, n) memcmp(a, b, n)
+#define bcopy(a, b, n) memmove(b, a, n)
+#endif
+
+#if defined(BSD) || defined(BSD4_3)
+#define strchr(a, b) index(a, b)
+#define strrchr(a, b) rindex(a, b)
+#define memcmp(a, b, n) bcmp(a, b, n)
+#define memmove(a, b, n) bcopy(b, a, n)
+#endif
+
+/*
+ * 32-bit machine. The db routines are theoretically independent of
+ * the size of u_shorts and u_longs, but I don't know that anyone has
+ * ever actually tried it. At a minimum, change the following #define's
+ * if you are trying to compile on a different type of system.
+ */
+#ifndef USHRT_MAX
+#define USHRT_MAX 0xFFFF
+#define ULONG_MAX 0xFFFFFFFF
+#endif
+
+#ifndef O_ACCMODE /* POSIX 1003.1 access mode mask. */
+#define O_ACCMODE (O_RDONLY|O_WRONLY|O_RDWR)
+#endif
+
+#ifndef _POSIX2_RE_DUP_MAX /* POSIX 1003.2 RE limit. */
+#define _POSIX2_RE_DUP_MAX 255
+#endif
+
+/*
+ * If you can't provide lock values in the open(2) call. Note, this
+ * allows races to happen.
+ */
+#ifndef O_EXLOCK /* 4.4BSD extension. */
+#define O_EXLOCK 0
+#endif
+
+#ifndef O_SHLOCK /* 4.4BSD extension. */
+#define O_SHLOCK 0
+#endif
+
+#ifndef EFTYPE
+#define EFTYPE EINVAL /* POSIX 1003.1 format errno. */
+#endif
+
+#ifndef WCOREDUMP /* 4.4BSD extension */
+#define WCOREDUMP(a) 0
+#endif
+
+#ifndef STDERR_FILENO
+#define STDIN_FILENO 0 /* ANSI C #defines */
+#define STDOUT_FILENO 1
+#define STDERR_FILENO 2
+#endif
+
+#ifndef SEEK_END
+#define SEEK_SET 0 /* POSIX 1003.1 seek values */
+#define SEEK_CUR 1
+#define SEEK_END 2
+#endif
+
+#ifndef _POSIX_VDISABLE /* POSIX 1003.1 disabling char. */
+#define _POSIX_VDISABLE 0 /* Some systems used 0. */
+#endif
+
+#ifndef TCSASOFT /* 4.4BSD extension. */
+#define TCSASOFT 0
+#endif
+
+#ifndef _POSIX2_RE_DUP_MAX /* POSIX 1003.2 values. */
+#define _POSIX2_RE_DUP_MAX 255
+#endif
+
+#ifndef NULL /* ANSI C #defines NULL everywhere. */
+#define NULL 0
+#endif
+
+#ifndef MAX /* Usually found in <sys/param.h>. */
+#define MAX(_a,_b) ((_a)<(_b)?(_b):(_a))
+#endif
+#ifndef MIN /* Usually found in <sys/param.h>. */
+#define MIN(_a,_b) ((_a)<(_b)?(_a):(_b))
+#endif
+
+/* Default file permissions. */
+#ifndef DEFFILEMODE /* 4.4BSD extension. */
+#define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
+#endif
+
+#ifndef S_ISDIR /* POSIX 1003.1 file type tests. */
+#define S_ISDIR(m) ((m & 0170000) == 0040000) /* directory */
+#define S_ISCHR(m) ((m & 0170000) == 0020000) /* char special */
+#define S_ISBLK(m) ((m & 0170000) == 0060000) /* block special */
+#define S_ISREG(m) ((m & 0170000) == 0100000) /* regular file */
+#define S_ISFIFO(m) ((m & 0170000) == 0010000) /* fifo */
+#endif
+#ifndef S_ISLNK /* BSD POSIX 1003.1 extensions */
+#define S_ISLNK(m) ((m & 0170000) == 0120000) /* symbolic link */
+#define S_ISSOCK(m) ((m & 0170000) == 0140000) /* socket */
+#endif
+
+/* The type of a va_list. */
+#ifndef _BSD_VA_LIST_ /* 4.4BSD #define. */
+#define _BSD_VA_LIST_ char *
+#endif
+
+#endif /* !_COMPAT_H_ */
--- /dev/null
+../../include/db.h
\ No newline at end of file
--- /dev/null
+../../include/mpool.h
\ No newline at end of file
--- /dev/null
+../../include/ndbm.h
\ No newline at end of file
--- /dev/null
+include
\ No newline at end of file
--- /dev/null
+# @(#)Makefile 8.9 (Berkeley) 7/14/94
+
+LIBDB= libdb.a
+OBJ1= hash.o hash_bigkey.o hash_buf.o hash_func.o hash_log2.o hash_page.o \
+ hsearch.o ndbm.o
+OBJ2= bt_close.o bt_conv.o bt_debug.o bt_delete.o bt_get.o bt_open.o \
+ bt_overflow.o bt_page.o bt_put.o bt_search.o bt_seq.o bt_split.o \
+ bt_utils.o
+OBJ3= db.o
+OBJ4= mpool.o
+OBJ5= rec_close.o rec_delete.o rec_get.o rec_open.o rec_put.o rec_search.o \
+ rec_seq.o rec_utils.o
+
+MISC= snprintf.o
+
+${LIBDB}: ${OBJ1} ${OBJ2} ${OBJ3} ${OBJ4} ${OBJ5} ${MISC}
+ rm -f $@
+ ar cq $@ \
+ `lorder ${OBJ1} ${OBJ2} ${OBJ3} ${OBJ4} ${OBJ5} ${MISC} | tsort`
+ ranlib $@
+
+clean:
+ rm -f ${LIBDB} ${OBJ1} ${OBJ2} ${OBJ3} ${OBJ4} ${OBJ5} ${MISC}
+
+OORG= -O
+CL= ${CC} -c -D__DBINTERFACE_PRIVATE ${OORG} -I. -Iinclude
+
+hash.o: ../../hash/hash.c
+ ${CL} -I../../hash ../../hash/hash.c
+hash_bigkey.o: ../../hash/hash_bigkey.c
+ ${CL} -I../../hash ../../hash/hash_bigkey.c
+hash_buf.o: ../../hash/hash_buf.c
+ ${CL} -I../../hash ../../hash/hash_buf.c
+hash_func.o: ../../hash/hash_func.c
+ ${CL} -I../../hash ../../hash/hash_func.c
+hash_log2.o: ../../hash/hash_log2.c
+ ${CL} -I../../hash ../../hash/hash_log2.c
+hash_page.o: ../../hash/hash_page.c
+ ${CL} -I../../hash ../../hash/hash_page.c
+hsearch.o: ../../hash/hsearch.c
+ ${CL} -I../../hash ../../hash/hsearch.c
+ndbm.o: ../../hash/ndbm.c
+ ${CL} -I../../hash ../../hash/ndbm.c
+
+bt_close.o: ../../btree/bt_close.c
+ ${CL} -I../../btree ../../btree/bt_close.c
+bt_conv.o: ../../btree/bt_conv.c
+ ${CL} -I../../btree ../../btree/bt_conv.c
+bt_debug.o: ../../btree/bt_debug.c
+ ${CL} -I../../btree ../../btree/bt_debug.c
+bt_delete.o: ../../btree/bt_delete.c
+ ${CL} -I../../btree ../../btree/bt_delete.c
+bt_get.o: ../../btree/bt_get.c
+ ${CL} -I../../btree ../../btree/bt_get.c
+bt_open.o: ../../btree/bt_open.c
+ ${CL} -I../../btree ../../btree/bt_open.c
+bt_overflow.o: ../../btree/bt_overflow.c
+ ${CL} -I../../btree ../../btree/bt_overflow.c
+bt_page.o: ../../btree/bt_page.c
+ ${CL} -I../../btree ../../btree/bt_page.c
+bt_put.o: ../../btree/bt_put.c
+ ${CL} -I../../btree ../../btree/bt_put.c
+bt_search.o: ../../btree/bt_search.c
+ ${CL} -I../../btree ../../btree/bt_search.c
+bt_seq.o: ../../btree/bt_seq.c
+ ${CL} -I../../btree ../../btree/bt_seq.c
+bt_split.o: ../../btree/bt_split.c
+ ${CL} -I../../btree ../../btree/bt_split.c
+bt_stack.o: ../../btree/bt_stack.c
+ ${CL} -I../../btree ../../btree/bt_stack.c
+bt_utils.o: ../../btree/bt_utils.c
+ ${CL} -I../../btree ../../btree/bt_utils.c
+
+db.o: ../../db/db.c
+ ${CL} ../../db/db.c
+
+mpool.o: ../../mpool/mpool.c
+ ${CL} -I../../mpool ../../mpool/mpool.c
+
+rec_close.o: ../../recno/rec_close.c
+ ${CL} -I../../recno ../../recno/rec_close.c
+rec_delete.o: ../../recno/rec_delete.c
+ ${CL} -I../../recno ../../recno/rec_delete.c
+rec_get.o: ../../recno/rec_get.c
+ ${CL} -I../../recno ../../recno/rec_get.c
+rec_open.o: ../../recno/rec_open.c
+ ${CL} -I../../recno ../../recno/rec_open.c
+rec_put.o: ../../recno/rec_put.c
+ ${CL} -I../../recno ../../recno/rec_put.c
+rec_search.o: ../../recno/rec_search.c
+ ${CL} -I../../recno ../../recno/rec_search.c
+rec_seq.o: ../../recno/rec_seq.c
+ ${CL} -I../../recno ../../recno/rec_seq.c
+rec_utils.o: ../../recno/rec_utils.c
+ ${CL} -I../../recno ../../recno/rec_utils.c
+
+memmove.o:
+ ${CC} -DMEMMOVE -c -O -I. -Iinclude clib/memmove.c
+mktemp.o:
+ ${CC} -c -O -I. -Iinclude clib/mktemp.c
+snprintf.o:
+ ${CC} -c -O -I. -Iinclude clib/snprintf.c
--- /dev/null
+../clib
\ No newline at end of file
--- /dev/null
+../../include/cdefs.h
\ No newline at end of file
--- /dev/null
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)compat.h 8.13 (Berkeley) 2/21/94
+ */
+
+#ifndef _COMPAT_H_
+#define _COMPAT_H_
+
+#include <sys/types.h>
+
+/*
+ * If your system doesn't typedef u_long, u_short, or u_char, change
+ * the 0 to a 1.
+ */
+#if 0
+typedef unsigned char u_char; /* 4.[34]BSD names. */
+typedef unsigned int u_int;
+typedef unsigned long u_long;
+typedef unsigned short u_short;
+#endif
+
+/* If your system doesn't typedef size_t, change the 0 to a 1. */
+#if 0
+typedef unsigned int size_t; /* POSIX, 4.[34]BSD names. */
+#endif
+
+/* If your system doesn't typedef ssize_t, change the 0 to a 1. */
+#if 0
+typedef int ssize_t; /* POSIX names. */
+#endif
+
+/*
+ * If your system doesn't have the POSIX type for a signal mask,
+ * change the 0 to a 1.
+ */
+#if 0 /* POSIX 1003.1 signal mask type. */
+typedef unsigned int sigset_t;
+#endif
+
+/*
+ * If your system's vsprintf returns a char *, not an int,
+ * change the 0 to a 1.
+ */
+#if 0
+#define VSPRINTF_CHARSTAR
+#endif
+
+/*
+ * If you don't have POSIX 1003.1 signals, the signal code surrounding the
+ * temporary file creation is intended to block all of the possible signals
+ * long enough to create the file and unlink it. All of this stuff is
+ * intended to use old-style BSD calls to fake POSIX 1003.1 calls.
+ */
+#ifdef NO_POSIX_SIGNALS
+#define sigemptyset(set) (*(set) = 0)
+#define sigfillset(set) (*(set) = ~(sigset_t)0, 0)
+#define sigaddset(set,signo) (*(set) |= sigmask(signo), 0)
+#define sigdelset(set,signo) (*(set) &= ~sigmask(signo), 0)
+#define sigismember(set,signo) ((*(set) & sigmask(signo)) != 0)
+
+#define SIG_BLOCK 1
+#define SIG_UNBLOCK 2
+#define SIG_SETMASK 3
+
+static int __sigtemp; /* For the use of sigprocmask */
+
+/* Repeated test of oset != NULL is to avoid "*0". */
+#define sigprocmask(how, set, oset) \
+ ((__sigtemp = \
+ (((how) == SIG_BLOCK) ? \
+ sigblock(0) | *(set) : \
+ (((how) == SIG_UNBLOCK) ? \
+ sigblock(0) & ~(*(set)) : \
+ ((how) == SIG_SETMASK ? \
+ *(set) : sigblock(0))))), \
+ ((oset) ? (*(oset ? oset : set) = sigsetmask(__sigtemp)) : \
+ sigsetmask(__sigtemp)), 0)
+#endif
+
+/*
+ * If your system doesn't have an include file with the appropriate
+ * byte order set, make sure you specify the correct one.
+ */
+#ifndef BYTE_ORDER
+#define LITTLE_ENDIAN 1234 /* LSB first: i386, vax */
+#define BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */
+#define BYTE_ORDER LITTLE_ENDIAN /* Set for your system. */
+#endif
+
+#if defined(SYSV) || defined(SYSTEM5)
+#define index(a, b) strchr(a, b)
+#define rindex(a, b) strrchr(a, b)
+#define bzero(a, b) memset(a, 0, b)
+#define bcmp(a, b, n) memcmp(a, b, n)
+#define bcopy(a, b, n) memmove(b, a, n)
+#endif
+
+#if defined(BSD) || defined(BSD4_3)
+#define strchr(a, b) index(a, b)
+#define strrchr(a, b) rindex(a, b)
+#define memcmp(a, b, n) bcmp(a, b, n)
+#define memmove(a, b, n) bcopy(b, a, n)
+#endif
+
+/*
+ * 32-bit machine. The db routines are theoretically independent of
+ * the size of u_shorts and u_longs, but I don't know that anyone has
+ * ever actually tried it. At a minimum, change the following #define's
+ * if you are trying to compile on a different type of system.
+ */
+#ifndef USHRT_MAX
+#define USHRT_MAX 0xFFFF
+#define ULONG_MAX 0xFFFFFFFF
+#endif
+
+#ifndef O_ACCMODE /* POSIX 1003.1 access mode mask. */
+#define O_ACCMODE (O_RDONLY|O_WRONLY|O_RDWR)
+#endif
+
+#ifndef _POSIX2_RE_DUP_MAX /* POSIX 1003.2 RE limit. */
+#define _POSIX2_RE_DUP_MAX 255
+#endif
+
+/*
+ * If you can't provide lock values in the open(2) call. Note, this
+ * allows races to happen.
+ */
+#ifndef O_EXLOCK /* 4.4BSD extension. */
+#define O_EXLOCK 0
+#endif
+
+#ifndef O_SHLOCK /* 4.4BSD extension. */
+#define O_SHLOCK 0
+#endif
+
+#ifndef EFTYPE
+#define EFTYPE EINVAL /* POSIX 1003.1 format errno. */
+#endif
+
+#ifndef WCOREDUMP /* 4.4BSD extension */
+#define WCOREDUMP(a) 0
+#endif
+
+#ifndef STDERR_FILENO
+#define STDIN_FILENO 0 /* ANSI C #defines */
+#define STDOUT_FILENO 1
+#define STDERR_FILENO 2
+#endif
+
+#ifndef SEEK_END
+#define SEEK_SET 0 /* POSIX 1003.1 seek values */
+#define SEEK_CUR 1
+#define SEEK_END 2
+#endif
+
+#ifndef _POSIX_VDISABLE /* POSIX 1003.1 disabling char. */
+#define _POSIX_VDISABLE 0 /* Some systems used 0. */
+#endif
+
+#ifndef TCSASOFT /* 4.4BSD extension. */
+#define TCSASOFT 0
+#endif
+
+#ifndef _POSIX2_RE_DUP_MAX /* POSIX 1003.2 values. */
+#define _POSIX2_RE_DUP_MAX 255
+#endif
+
+#ifndef NULL /* ANSI C #defines NULL everywhere. */
+#define NULL 0
+#endif
+
+#ifndef MAX /* Usually found in <sys/param.h>. */
+#define MAX(_a,_b) ((_a)<(_b)?(_b):(_a))
+#endif
+#ifndef MIN /* Usually found in <sys/param.h>. */
+#define MIN(_a,_b) ((_a)<(_b)?(_a):(_b))
+#endif
+
+/* Default file permissions. */
+#ifndef DEFFILEMODE /* 4.4BSD extension. */
+#define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
+#endif
+
+#ifndef S_ISDIR /* POSIX 1003.1 file type tests. */
+#define S_ISDIR(m) ((m & 0170000) == 0040000) /* directory */
+#define S_ISCHR(m) ((m & 0170000) == 0020000) /* char special */
+#define S_ISBLK(m) ((m & 0170000) == 0060000) /* block special */
+#define S_ISREG(m) ((m & 0170000) == 0100000) /* regular file */
+#define S_ISFIFO(m) ((m & 0170000) == 0010000) /* fifo */
+#endif
+#ifndef S_ISLNK /* BSD POSIX 1003.1 extensions */
+#define S_ISLNK(m) ((m & 0170000) == 0120000) /* symbolic link */
+#define S_ISSOCK(m) ((m & 0170000) == 0140000) /* socket */
+#endif
+
+/* The type of a va_list. */
+#ifndef _BSD_VA_LIST_ /* 4.4BSD #define. */
+#define _BSD_VA_LIST_ char *
+#endif
+
+#endif /* !_COMPAT_H_ */
--- /dev/null
+../../include/db.h
\ No newline at end of file
--- /dev/null
+../../include/mpool.h
\ No newline at end of file
--- /dev/null
+../../include/ndbm.h
\ No newline at end of file
--- /dev/null
+../../include/queue.h
\ No newline at end of file
--- /dev/null
+include
\ No newline at end of file
--- /dev/null
+osf.1.0.2
\ No newline at end of file
--- /dev/null
+osf.1.0.2
\ No newline at end of file
--- /dev/null
+# @(#)Makefile 8.9 (Berkeley) 7/14/94
+
+LIBDB= libdb.a
+OBJ1= hash.o hash_bigkey.o hash_buf.o hash_func.o hash_log2.o hash_page.o \
+ hsearch.o ndbm.o
+OBJ2= bt_close.o bt_conv.o bt_debug.o bt_delete.o bt_get.o bt_open.o \
+ bt_overflow.o bt_page.o bt_put.o bt_search.o bt_seq.o bt_split.o \
+ bt_utils.o
+OBJ3= db.o
+OBJ4= mpool.o
+OBJ5= rec_close.o rec_delete.o rec_get.o rec_open.o rec_put.o rec_search.o \
+ rec_seq.o rec_utils.o
+
+MISC= mktemp.o snprintf.o
+
+${LIBDB}: ${OBJ1} ${OBJ2} ${OBJ3} ${OBJ4} ${OBJ5} ${MISC}
+ rm -f $@
+ ar cq $@ \
+ `lorder ${OBJ1} ${OBJ2} ${OBJ3} ${OBJ4} ${OBJ5} ${MISC} | tsort`
+ ranlib $@
+
+clean:
+ rm -f ${LIBDB} ${OBJ1} ${OBJ2} ${OBJ3} ${OBJ4} ${OBJ5} ${MISC}
+
+CC= gcc
+OORG= -O
+CL= ${CC} -c -D__DBINTERFACE_PRIVATE ${OORG} -I. -Iinclude \
+ -DMMAP_NOT_AVAILABLE -DSTBLKSIZE_NOT_AVAILABLE -DSYS5
+
+hash.o: ../../hash/hash.c
+ ${CL} -I../../hash ../../hash/hash.c
+hash_bigkey.o: ../../hash/hash_bigkey.c
+ ${CL} -I../../hash ../../hash/hash_bigkey.c
+hash_buf.o: ../../hash/hash_buf.c
+ ${CL} -I../../hash ../../hash/hash_buf.c
+hash_func.o: ../../hash/hash_func.c
+ ${CL} -I../../hash ../../hash/hash_func.c
+hash_log2.o: ../../hash/hash_log2.c
+ ${CL} -I../../hash ../../hash/hash_log2.c
+hash_page.o: ../../hash/hash_page.c
+ ${CL} -I../../hash ../../hash/hash_page.c
+hsearch.o: ../../hash/hsearch.c
+ ${CL} -I../../hash ../../hash/hsearch.c
+ndbm.o: ../../hash/ndbm.c
+ ${CL} -I../../hash ../../hash/ndbm.c
+
+bt_close.o: ../../btree/bt_close.c
+ ${CL} -I../../btree ../../btree/bt_close.c
+bt_conv.o: ../../btree/bt_conv.c
+ ${CL} -I../../btree ../../btree/bt_conv.c
+bt_debug.o: ../../btree/bt_debug.c
+ ${CL} -I../../btree ../../btree/bt_debug.c
+bt_delete.o: ../../btree/bt_delete.c
+ ${CL} -I../../btree ../../btree/bt_delete.c
+bt_get.o: ../../btree/bt_get.c
+ ${CL} -I../../btree ../../btree/bt_get.c
+bt_open.o: ../../btree/bt_open.c
+ ${CL} -I../../btree ../../btree/bt_open.c
+bt_overflow.o: ../../btree/bt_overflow.c
+ ${CL} -I../../btree ../../btree/bt_overflow.c
+bt_page.o: ../../btree/bt_page.c
+ ${CL} -I../../btree ../../btree/bt_page.c
+bt_put.o: ../../btree/bt_put.c
+ ${CL} -I../../btree ../../btree/bt_put.c
+bt_search.o: ../../btree/bt_search.c
+ ${CL} -I../../btree ../../btree/bt_search.c
+bt_seq.o: ../../btree/bt_seq.c
+ ${CL} -I../../btree ../../btree/bt_seq.c
+bt_split.o: ../../btree/bt_split.c
+ ${CL} -I../../btree ../../btree/bt_split.c
+bt_stack.o: ../../btree/bt_stack.c
+ ${CL} -I../../btree ../../btree/bt_stack.c
+bt_utils.o: ../../btree/bt_utils.c
+ ${CL} -I../../btree ../../btree/bt_utils.c
+
+db.o: ../../db/db.c
+ ${CL} ../../db/db.c
+
+mpool.o: ../../mpool/mpool.c
+ ${CL} -I../../mpool ../../mpool/mpool.c
+
+rec_close.o: ../../recno/rec_close.c
+ ${CL} -I../../recno ../../recno/rec_close.c
+rec_delete.o: ../../recno/rec_delete.c
+ ${CL} -I../../recno ../../recno/rec_delete.c
+rec_get.o: ../../recno/rec_get.c
+ ${CL} -I../../recno ../../recno/rec_get.c
+rec_open.o: ../../recno/rec_open.c
+ ${CL} -I../../recno ../../recno/rec_open.c
+rec_put.o: ../../recno/rec_put.c
+ ${CL} -I../../recno ../../recno/rec_put.c
+rec_search.o: ../../recno/rec_search.c
+ ${CL} -I../../recno ../../recno/rec_search.c
+rec_seq.o: ../../recno/rec_seq.c
+ ${CL} -I../../recno ../../recno/rec_seq.c
+rec_utils.o: ../../recno/rec_utils.c
+ ${CL} -I../../recno ../../recno/rec_utils.c
+
+memmove.o:
+ ${CC} -DMEMMOVE -c -O -I. -Iinclude clib/memmove.c
+mktemp.o:
+ ${CC} -c -O -I. -Iinclude clib/mktemp.c
+snprintf.o:
+ ${CC} -c -O -I. -Iinclude clib/snprintf.c
--- /dev/null
+*** PORT/db/btree/bt_open.c.orig 1993/11/24 11:16:51
+--- PORT/db/btree/bt_open.c 1993/11/24 12:38:12
+***************
+*** 256,262 ****
+--- 256,266 ----
+ * Don't overflow the page offset type.
+ */
+ if (b.psize == 0) {
++ #ifdef STBLKSIZE_NOT_AVAILABLE
++ b.psize = 4096;
++ #else
+ b.psize = sb.st_blksize;
++ #endif
+ if (b.psize < MINPSIZE)
+ b.psize = MINPSIZE;
+ if (b.psize > MAX_PAGE_OFFSET + 1)
+*** PORT/db/recno/rec_open.c.orig 1993/11/29 18:26:26
+--- PORT/db/recno/rec_open.c 1993/11/30 11:35:21
+***************
+*** 159,164 ****
+--- 159,167 ----
+ SET(t, R_EOF);
+ else {
+ t->bt_msize = sb.st_size;
++ #ifdef MMAP_NOT_AVAILABLE
++ goto slow;
++ #else
+ if ((t->bt_smap = mmap(NULL, t->bt_msize,
+ PROT_READ, MAP_PRIVATE, rfd,
+ (off_t)0)) == (caddr_t)-1)
+***************
+*** 168,173 ****
+--- 171,177 ----
+ t->bt_irec = ISSET(t, R_FIXLEN) ?
+ __rec_fmap : __rec_vmap;
+ SET(t, R_MEMMAPPED);
++ #endif
+ }
+ }
+ }
+*** PORT/db/hash/hash_log2.c.orig 1993/11/24 11:10:40
+--- PORT/db/hash/hash_log2.c 1993/11/24 12:38:52
+***************
+*** 40,50 ****
+
+ #include <sys/types.h>
+
+! u_int
+ __log2(num)
+! u_int num;
+ {
+! register u_int i, limit;
+
+ limit = 1;
+ for (i = 0; limit < num; limit = limit << 1, i++);
+--- 40,50 ----
+
+ #include <sys/types.h>
+
+! unsigned int
+ __log2(num)
+! unsigned int num;
+ {
+! register unsigned int i, limit;
+
+ limit = 1;
+ for (i = 0; limit < num; limit = limit << 1, i++);
+*** PORT/db/hash/hash.c.orig 1993/11/24 11:18:44
+--- PORT/db/hash/hash.c 1993/11/24 12:38:29
+***************
+*** 301,307 ****
+--- 301,311 ----
+ if (file != NULL) {
+ if (stat(file, &statbuf))
+ return (NULL);
++ #ifdef STBLKSIZE_NOT_AVAILABLE
++ hashp->BSIZE = 4096;
++ #else
+ hashp->BSIZE = statbuf.st_blksize;
++ #endif
+ hashp->BSHIFT = __log2(hashp->BSIZE);
+ }
+
+*** PORT/db/hash/hash.h.orig 1993/11/24 11:20:03
+--- PORT/db/hash/hash.h 1993/11/24 12:38:38
+***************
+*** 261,266 ****
+--- 261,267 ----
+ #define REAL_KEY 4
+
+ /* Short hands for accessing structure */
++ #undef BSIZE
+ #define BSIZE hdr.bsize
+ #define BSHIFT hdr.bshift
+ #define DSIZE hdr.dsize
--- /dev/null
+../clib
\ No newline at end of file
--- /dev/null
+../../include/cdefs.h
\ No newline at end of file
--- /dev/null
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)compat.h 8.13 (Berkeley) 2/21/94
+ */
+
+#ifndef _COMPAT_H_
+#define _COMPAT_H_
+
+#include <sys/types.h>
+#include <sys/select.h> /* For fd_set. */
+
+/*
+ * If your system doesn't typedef u_long, u_short, or u_char, change
+ * the 0 to a 1.
+ */
+#if 1
+typedef unsigned char u_char; /* 4.[34]BSD names. */
+typedef unsigned int u_int;
+typedef unsigned long u_long;
+typedef unsigned short u_short;
+#endif
+
+/* If your system doesn't typedef size_t, change the 0 to a 1. */
+#if 0
+typedef unsigned int size_t; /* POSIX, 4.[34]BSD names. */
+#endif
+
+/* If your system doesn't typedef ssize_t, change the 0 to a 1. */
+#if 0
+typedef int ssize_t; /* POSIX names. */
+#endif
+
+/*
+ * If your system doesn't have the POSIX type for a signal mask,
+ * change the 0 to a 1.
+ */
+#if 0 /* POSIX 1003.1 signal mask type. */
+typedef unsigned int sigset_t;
+#endif
+
+/*
+ * If your system's vsprintf returns a char *, not an int,
+ * change the 0 to a 1.
+ */
+#if 0
+#define VSPRINTF_CHARSTAR
+#endif
+
+/*
+ * If you don't have POSIX 1003.1 signals, the signal code surrounding the
+ * temporary file creation is intended to block all of the possible signals
+ * long enough to create the file and unlink it. All of this stuff is
+ * intended to use old-style BSD calls to fake POSIX 1003.1 calls.
+ */
+#ifdef NO_POSIX_SIGNALS
+#define sigemptyset(set) (*(set) = 0)
+#define sigfillset(set) (*(set) = ~(sigset_t)0, 0)
+#define sigaddset(set,signo) (*(set) |= sigmask(signo), 0)
+#define sigdelset(set,signo) (*(set) &= ~sigmask(signo), 0)
+#define sigismember(set,signo) ((*(set) & sigmask(signo)) != 0)
+
+#define SIG_BLOCK 1
+#define SIG_UNBLOCK 2
+#define SIG_SETMASK 3
+
+static int __sigtemp; /* For the use of sigprocmask */
+
+/* Repeated test of oset != NULL is to avoid "*0". */
+#define sigprocmask(how, set, oset) \
+ ((__sigtemp = \
+ (((how) == SIG_BLOCK) ? \
+ sigblock(0) | *(set) : \
+ (((how) == SIG_UNBLOCK) ? \
+ sigblock(0) & ~(*(set)) : \
+ ((how) == SIG_SETMASK ? \
+ *(set) : sigblock(0))))), \
+ ((oset) ? (*(oset ? oset : set) = sigsetmask(__sigtemp)) : \
+ sigsetmask(__sigtemp)), 0)
+#endif
+
+/*
+ * If your system doesn't have an include file with the appropriate
+ * byte order set, make sure you specify the correct one.
+ */
+#ifndef BYTE_ORDER
+#define LITTLE_ENDIAN 1234 /* LSB first: i386, vax */
+#define BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */
+#define BYTE_ORDER BIG_ENDIAN /* Set for your system. */
+#endif
+
+#if defined(SYSV) || defined(SYSTEM5)
+#define index(a, b) strchr(a, b)
+#define rindex(a, b) strrchr(a, b)
+#define bzero(a, b) memset(a, 0, b)
+#define bcmp(a, b, n) memcmp(a, b, n)
+#define bcopy(a, b, n) memmove(b, a, n)
+#endif
+
+#if defined(BSD) || defined(BSD4_3)
+#define strchr(a, b) index(a, b)
+#define strrchr(a, b) rindex(a, b)
+#define memcmp(a, b, n) bcmp(a, b, n)
+#define memmove(a, b, n) bcopy(b, a, n)
+#endif
+
+/*
+ * 32-bit machine. The db routines are theoretically independent of
+ * the size of u_shorts and u_longs, but I don't know that anyone has
+ * ever actually tried it. At a minimum, change the following #define's
+ * if you are trying to compile on a different type of system.
+ */
+#ifndef USHRT_MAX
+#define USHRT_MAX 0xFFFF
+#define ULONG_MAX 0xFFFFFFFF
+#endif
+
+#ifndef O_ACCMODE /* POSIX 1003.1 access mode mask. */
+#define O_ACCMODE (O_RDONLY|O_WRONLY|O_RDWR)
+#endif
+
+#ifndef _POSIX2_RE_DUP_MAX /* POSIX 1003.2 RE limit. */
+#define _POSIX2_RE_DUP_MAX 255
+#endif
+
+/*
+ * If you can't provide lock values in the open(2) call. Note, this
+ * allows races to happen.
+ */
+#ifndef O_EXLOCK /* 4.4BSD extension. */
+#define O_EXLOCK 0
+#endif
+
+#ifndef O_SHLOCK /* 4.4BSD extension. */
+#define O_SHLOCK 0
+#endif
+
+#ifndef EFTYPE
+#define EFTYPE EINVAL /* POSIX 1003.1 format errno. */
+#endif
+
+#ifndef WCOREDUMP /* 4.4BSD extension */
+#define WCOREDUMP(a) 0
+#endif
+
+#ifndef STDERR_FILENO
+#define STDIN_FILENO 0 /* ANSI C #defines */
+#define STDOUT_FILENO 1
+#define STDERR_FILENO 2
+#endif
+
+#ifndef SEEK_END
+#define SEEK_SET 0 /* POSIX 1003.1 seek values */
+#define SEEK_CUR 1
+#define SEEK_END 2
+#endif
+
+#ifndef _POSIX_VDISABLE /* POSIX 1003.1 disabling char. */
+#define _POSIX_VDISABLE 0 /* Some systems used 0. */
+#endif
+
+#ifndef TCSASOFT /* 4.4BSD extension. */
+#define TCSASOFT 0
+#endif
+
+#ifndef _POSIX2_RE_DUP_MAX /* POSIX 1003.2 values. */
+#define _POSIX2_RE_DUP_MAX 255
+#endif
+
+#ifndef NULL /* ANSI C #defines NULL everywhere. */
+#define NULL 0
+#endif
+
+#ifndef MAX /* Usually found in <sys/param.h>. */
+#define MAX(_a,_b) ((_a)<(_b)?(_b):(_a))
+#endif
+#ifndef MIN /* Usually found in <sys/param.h>. */
+#define MIN(_a,_b) ((_a)<(_b)?(_a):(_b))
+#endif
+
+/* Default file permissions. */
+#ifndef DEFFILEMODE /* 4.4BSD extension. */
+#define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
+#endif
+
+#ifndef S_ISDIR /* POSIX 1003.1 file type tests. */
+#define S_ISDIR(m) ((m & 0170000) == 0040000) /* directory */
+#define S_ISCHR(m) ((m & 0170000) == 0020000) /* char special */
+#define S_ISBLK(m) ((m & 0170000) == 0060000) /* block special */
+#define S_ISREG(m) ((m & 0170000) == 0100000) /* regular file */
+#define S_ISFIFO(m) ((m & 0170000) == 0010000) /* fifo */
+#endif
+#ifndef S_ISLNK /* BSD POSIX 1003.1 extensions */
+#define S_ISLNK(m) ((m & 0170000) == 0120000) /* symbolic link */
+#define S_ISSOCK(m) ((m & 0170000) == 0140000) /* socket */
+#endif
+
+/* The type of a va_list. */
+#ifndef _BSD_VA_LIST_ /* 4.4BSD #define. */
+#define _BSD_VA_LIST_ char *
+#endif
+
+#endif /* !_COMPAT_H_ */
--- /dev/null
+../../include/db.h
\ No newline at end of file
--- /dev/null
+../../include/mpool.h
\ No newline at end of file
--- /dev/null
+../../include/ndbm.h
\ No newline at end of file
--- /dev/null
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)pathnames.h 8.5 (Berkeley) 12/21/93
+ */
+
+#define _PATH_BSHELL "/bin/sh"
+#define _PATH_DEVNULL "/dev/null"
+#define _PATH_EXRC ".exrc"
+#define _PATH_NEXRC ".nexrc"
+#define _PATH_PRESERVE "/usr/tmp/vi.recover"
+#define _PATH_SENDMAIL "/usr/lib/sendmail"
+#define _PATH_SYSEXRC "/etc/vi.exrc"
+#define _PATH_TAGS "tags"
+#define _PATH_TMP "/tmp"
+#define _PATH_TTY "/dev/tty"
--- /dev/null
+../../include/queue.h
\ No newline at end of file
--- /dev/null
+include
\ No newline at end of file
--- /dev/null
+# @(#)Makefile 8.9 (Berkeley) 7/14/94
+
+LIBDB= libdb.a
+OBJ1= hash.o hash_bigkey.o hash_buf.o hash_func.o hash_log2.o hash_page.o \
+ hsearch.o ndbm.o
+OBJ2= bt_close.o bt_conv.o bt_debug.o bt_delete.o bt_get.o bt_open.o \
+ bt_overflow.o bt_page.o bt_put.o bt_search.o bt_seq.o bt_split.o \
+ bt_utils.o
+OBJ3= db.o
+OBJ4= mpool.o
+OBJ5= rec_close.o rec_delete.o rec_get.o rec_open.o rec_put.o rec_search.o \
+ rec_seq.o rec_utils.o
+
+MISC= mktemp.o snprintf.o
+
+${LIBDB}: ${OBJ1} ${OBJ2} ${OBJ3} ${OBJ4} ${OBJ5} ${MISC}
+ rm -f $@
+ ar cq $@ \
+ `lorder ${OBJ1} ${OBJ2} ${OBJ3} ${OBJ4} ${OBJ5} ${MISC} | tsort`
+ ranlib $@
+
+clean:
+ rm -f ${LIBDB} ${OBJ1} ${OBJ2} ${OBJ3} ${OBJ4} ${OBJ5} ${MISC}
+
+OORG= -O
+CL= ${CC} -c -D__DBINTERFACE_PRIVATE ${OORG} -I. -Iinclude
+
+hash.o: ../../hash/hash.c
+ ${CL} -I../../hash ../../hash/hash.c
+hash_bigkey.o: ../../hash/hash_bigkey.c
+ ${CL} -I../../hash ../../hash/hash_bigkey.c
+hash_buf.o: ../../hash/hash_buf.c
+ ${CL} -I../../hash ../../hash/hash_buf.c
+hash_func.o: ../../hash/hash_func.c
+ ${CL} -I../../hash ../../hash/hash_func.c
+hash_log2.o: ../../hash/hash_log2.c
+ ${CL} -I../../hash ../../hash/hash_log2.c
+hash_page.o: ../../hash/hash_page.c
+ ${CL} -I../../hash ../../hash/hash_page.c
+hsearch.o: ../../hash/hsearch.c
+ ${CL} -I../../hash ../../hash/hsearch.c
+ndbm.o: ../../hash/ndbm.c
+ ${CL} -I../../hash ../../hash/ndbm.c
+
+bt_close.o: ../../btree/bt_close.c
+ ${CL} -I../../btree ../../btree/bt_close.c
+bt_conv.o: ../../btree/bt_conv.c
+ ${CL} -I../../btree ../../btree/bt_conv.c
+bt_debug.o: ../../btree/bt_debug.c
+ ${CL} -I../../btree ../../btree/bt_debug.c
+bt_delete.o: ../../btree/bt_delete.c
+ ${CL} -I../../btree ../../btree/bt_delete.c
+bt_get.o: ../../btree/bt_get.c
+ ${CL} -I../../btree ../../btree/bt_get.c
+bt_open.o: ../../btree/bt_open.c
+ ${CL} -I../../btree ../../btree/bt_open.c
+bt_overflow.o: ../../btree/bt_overflow.c
+ ${CL} -I../../btree ../../btree/bt_overflow.c
+bt_page.o: ../../btree/bt_page.c
+ ${CL} -I../../btree ../../btree/bt_page.c
+bt_put.o: ../../btree/bt_put.c
+ ${CL} -I../../btree ../../btree/bt_put.c
+bt_search.o: ../../btree/bt_search.c
+ ${CL} -I../../btree ../../btree/bt_search.c
+bt_seq.o: ../../btree/bt_seq.c
+ ${CL} -I../../btree ../../btree/bt_seq.c
+bt_split.o: ../../btree/bt_split.c
+ ${CL} -I../../btree ../../btree/bt_split.c
+bt_stack.o: ../../btree/bt_stack.c
+ ${CL} -I../../btree ../../btree/bt_stack.c
+bt_utils.o: ../../btree/bt_utils.c
+ ${CL} -I../../btree ../../btree/bt_utils.c
+
+db.o: ../../db/db.c
+ ${CL} ../../db/db.c
+
+mpool.o: ../../mpool/mpool.c
+ ${CL} -I../../mpool ../../mpool/mpool.c
+
+rec_close.o: ../../recno/rec_close.c
+ ${CL} -I../../recno ../../recno/rec_close.c
+rec_delete.o: ../../recno/rec_delete.c
+ ${CL} -I../../recno ../../recno/rec_delete.c
+rec_get.o: ../../recno/rec_get.c
+ ${CL} -I../../recno ../../recno/rec_get.c
+rec_open.o: ../../recno/rec_open.c
+ ${CL} -I../../recno ../../recno/rec_open.c
+rec_put.o: ../../recno/rec_put.c
+ ${CL} -I../../recno ../../recno/rec_put.c
+rec_search.o: ../../recno/rec_search.c
+ ${CL} -I../../recno ../../recno/rec_search.c
+rec_seq.o: ../../recno/rec_seq.c
+ ${CL} -I../../recno ../../recno/rec_seq.c
+rec_utils.o: ../../recno/rec_utils.c
+ ${CL} -I../../recno ../../recno/rec_utils.c
+
+memmove.o:
+ ${CC} -DMEMMOVE -c -O -I. -Iinclude clib/memmove.c
+mktemp.o:
+ ${CC} -c -O -I. -Iinclude clib/mktemp.c
+snprintf.o:
+ ${CC} -c -O -I. -Iinclude clib/snprintf.c
--- /dev/null
+../clib
\ No newline at end of file
--- /dev/null
+../../include/cdefs.h
\ No newline at end of file
--- /dev/null
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)compat.h 8.13 (Berkeley) 2/21/94
+ */
+
+#ifndef _COMPAT_H_
+#define _COMPAT_H_
+
+#include <sys/types.h>
+
+/*
+ * If your system doesn't typedef u_long, u_short, or u_char, change
+ * the 0 to a 1.
+ */
+#if 0
+typedef unsigned char u_char; /* 4.[34]BSD names. */
+typedef unsigned int u_int;
+typedef unsigned long u_long;
+typedef unsigned short u_short;
+#endif
+
+/* If your system doesn't typedef size_t, change the 0 to a 1. */
+#if 0
+typedef unsigned int size_t; /* POSIX, 4.[34]BSD names. */
+#endif
+
+/* If your system doesn't typedef ssize_t, change the 0 to a 1. */
+#if 0
+typedef int ssize_t; /* POSIX names. */
+#endif
+
+/*
+ * If your system doesn't have the POSIX type for a signal mask,
+ * change the 0 to a 1.
+ */
+#if 0 /* POSIX 1003.1 signal mask type. */
+typedef unsigned int sigset_t;
+#endif
+
+/*
+ * If your system's vsprintf returns a char *, not an int,
+ * change the 0 to a 1.
+ */
+#if 0
+#define VSPRINTF_CHARSTAR
+#endif
+
+/*
+ * If you don't have POSIX 1003.1 signals, the signal code surrounding the
+ * temporary file creation is intended to block all of the possible signals
+ * long enough to create the file and unlink it. All of this stuff is
+ * intended to use old-style BSD calls to fake POSIX 1003.1 calls.
+ */
+#ifdef NO_POSIX_SIGNALS
+#define sigemptyset(set) (*(set) = 0)
+#define sigfillset(set) (*(set) = ~(sigset_t)0, 0)
+#define sigaddset(set,signo) (*(set) |= sigmask(signo), 0)
+#define sigdelset(set,signo) (*(set) &= ~sigmask(signo), 0)
+#define sigismember(set,signo) ((*(set) & sigmask(signo)) != 0)
+
+#define SIG_BLOCK 1
+#define SIG_UNBLOCK 2
+#define SIG_SETMASK 3
+
+static int __sigtemp; /* For the use of sigprocmask */
+
+/* Repeated test of oset != NULL is to avoid "*0". */
+#define sigprocmask(how, set, oset) \
+ ((__sigtemp = \
+ (((how) == SIG_BLOCK) ? \
+ sigblock(0) | *(set) : \
+ (((how) == SIG_UNBLOCK) ? \
+ sigblock(0) & ~(*(set)) : \
+ ((how) == SIG_SETMASK ? \
+ *(set) : sigblock(0))))), \
+ ((oset) ? (*(oset ? oset : set) = sigsetmask(__sigtemp)) : \
+ sigsetmask(__sigtemp)), 0)
+#endif
+
+/*
+ * If your system doesn't have an include file with the appropriate
+ * byte order set, make sure you specify the correct one.
+ */
+#ifndef BYTE_ORDER
+#define LITTLE_ENDIAN 1234 /* LSB first: i386, vax */
+#define BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */
+#define BYTE_ORDER BIG_ENDIAN /* Set for your system. */
+#endif
+
+#if defined(SYSV) || defined(SYSTEM5)
+#define index(a, b) strchr(a, b)
+#define rindex(a, b) strrchr(a, b)
+#define bzero(a, b) memset(a, 0, b)
+#define bcmp(a, b, n) memcmp(a, b, n)
+#define bcopy(a, b, n) memmove(b, a, n)
+#endif
+
+#if defined(BSD) || defined(BSD4_3)
+#define strchr(a, b) index(a, b)
+#define strrchr(a, b) rindex(a, b)
+#define memcmp(a, b, n) bcmp(a, b, n)
+#define memmove(a, b, n) bcopy(b, a, n)
+#endif
+
+/*
+ * 32-bit machine. The db routines are theoretically independent of
+ * the size of u_shorts and u_longs, but I don't know that anyone has
+ * ever actually tried it. At a minimum, change the following #define's
+ * if you are trying to compile on a different type of system.
+ */
+#ifndef USHRT_MAX
+#define USHRT_MAX 0xFFFF
+#define ULONG_MAX 0xFFFFFFFF
+#endif
+
+#ifndef O_ACCMODE /* POSIX 1003.1 access mode mask. */
+#define O_ACCMODE (O_RDONLY|O_WRONLY|O_RDWR)
+#endif
+
+#ifndef _POSIX2_RE_DUP_MAX /* POSIX 1003.2 RE limit. */
+#define _POSIX2_RE_DUP_MAX 255
+#endif
+
+/*
+ * If you can't provide lock values in the open(2) call. Note, this
+ * allows races to happen.
+ */
+#ifndef O_EXLOCK /* 4.4BSD extension. */
+#define O_EXLOCK 0
+#endif
+
+#ifndef O_SHLOCK /* 4.4BSD extension. */
+#define O_SHLOCK 0
+#endif
+
+#ifndef EFTYPE
+#define EFTYPE EINVAL /* POSIX 1003.1 format errno. */
+#endif
+
+#ifndef WCOREDUMP /* 4.4BSD extension */
+#define WCOREDUMP(a) 0
+#endif
+
+#ifndef STDERR_FILENO
+#define STDIN_FILENO 0 /* ANSI C #defines */
+#define STDOUT_FILENO 1
+#define STDERR_FILENO 2
+#endif
+
+#ifndef SEEK_END
+#define SEEK_SET 0 /* POSIX 1003.1 seek values */
+#define SEEK_CUR 1
+#define SEEK_END 2
+#endif
+
+#ifndef _POSIX_VDISABLE /* POSIX 1003.1 disabling char. */
+#define _POSIX_VDISABLE 0 /* Some systems used 0. */
+#endif
+
+#ifndef TCSASOFT /* 4.4BSD extension. */
+#define TCSASOFT 0
+#endif
+
+#ifndef _POSIX2_RE_DUP_MAX /* POSIX 1003.2 values. */
+#define _POSIX2_RE_DUP_MAX 255
+#endif
+
+#ifndef NULL /* ANSI C #defines NULL everywhere. */
+#define NULL 0
+#endif
+
+#ifndef MAX /* Usually found in <sys/param.h>. */
+#define MAX(_a,_b) ((_a)<(_b)?(_b):(_a))
+#endif
+#ifndef MIN /* Usually found in <sys/param.h>. */
+#define MIN(_a,_b) ((_a)<(_b)?(_a):(_b))
+#endif
+
+/* Default file permissions. */
+#ifndef DEFFILEMODE /* 4.4BSD extension. */
+#define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
+#endif
+
+#ifndef S_ISDIR /* POSIX 1003.1 file type tests. */
+#define S_ISDIR(m) ((m & 0170000) == 0040000) /* directory */
+#define S_ISCHR(m) ((m & 0170000) == 0020000) /* char special */
+#define S_ISBLK(m) ((m & 0170000) == 0060000) /* block special */
+#define S_ISREG(m) ((m & 0170000) == 0100000) /* regular file */
+#define S_ISFIFO(m) ((m & 0170000) == 0010000) /* fifo */
+#endif
+#ifndef S_ISLNK /* BSD POSIX 1003.1 extensions */
+#define S_ISLNK(m) ((m & 0170000) == 0120000) /* symbolic link */
+#define S_ISSOCK(m) ((m & 0170000) == 0140000) /* socket */
+#endif
+
+/* The type of a va_list. */
+#ifndef _BSD_VA_LIST_ /* 4.4BSD #define. */
+#define _BSD_VA_LIST_ char *
+#endif
+
+#endif /* !_COMPAT_H_ */
--- /dev/null
+../../include/db.h
\ No newline at end of file
--- /dev/null
+../../include/mpool.h
\ No newline at end of file
--- /dev/null
+../../include/ndbm.h
\ No newline at end of file
--- /dev/null
+../../include/queue.h
\ No newline at end of file
--- /dev/null
+include
\ No newline at end of file
--- /dev/null
+sunos.5.2
\ No newline at end of file
--- /dev/null
+# @(#)Makefile 8.9 (Berkeley) 7/14/94
+
+LIBDB= libdb.a
+OBJ1= hash.o hash_bigkey.o hash_buf.o hash_func.o hash_log2.o hash_page.o \
+ hsearch.o ndbm.o
+OBJ2= bt_close.o bt_conv.o bt_debug.o bt_delete.o bt_get.o bt_open.o \
+ bt_overflow.o bt_page.o bt_put.o bt_search.o bt_seq.o bt_split.o \
+ bt_utils.o
+OBJ3= db.o
+OBJ4= mpool.o
+OBJ5= rec_close.o rec_delete.o rec_get.o rec_open.o rec_put.o rec_search.o \
+ rec_seq.o rec_utils.o
+
+MISC= memmove.o snprintf.o
+
+${LIBDB}: ${OBJ1} ${OBJ2} ${OBJ3} ${OBJ4} ${OBJ5} ${MISC}
+ rm -f $@
+ ar cq $@ \
+ `lorder ${OBJ1} ${OBJ2} ${OBJ3} ${OBJ4} ${OBJ5} ${MISC} | tsort`
+ ranlib $@
+
+clean:
+ rm -f ${LIBDB} ${OBJ1} ${OBJ2} ${OBJ3} ${OBJ4} ${OBJ5} ${MISC}
+
+OORG= -O
+CL= ${CC} -c -D__DBINTERFACE_PRIVATE ${OORG} -I. -Iinclude
+
+hash.o: ../../hash/hash.c
+ ${CL} -I../../hash ../../hash/hash.c
+hash_bigkey.o: ../../hash/hash_bigkey.c
+ ${CL} -I../../hash ../../hash/hash_bigkey.c
+hash_buf.o: ../../hash/hash_buf.c
+ ${CL} -I../../hash ../../hash/hash_buf.c
+hash_func.o: ../../hash/hash_func.c
+ ${CL} -I../../hash ../../hash/hash_func.c
+hash_log2.o: ../../hash/hash_log2.c
+ ${CL} -I../../hash ../../hash/hash_log2.c
+hash_page.o: ../../hash/hash_page.c
+ ${CL} -I../../hash ../../hash/hash_page.c
+hsearch.o: ../../hash/hsearch.c
+ ${CL} -I../../hash ../../hash/hsearch.c
+ndbm.o: ../../hash/ndbm.c
+ ${CL} -I../../hash ../../hash/ndbm.c
+
+bt_close.o: ../../btree/bt_close.c
+ ${CL} -I../../btree ../../btree/bt_close.c
+bt_conv.o: ../../btree/bt_conv.c
+ ${CL} -I../../btree ../../btree/bt_conv.c
+bt_debug.o: ../../btree/bt_debug.c
+ ${CL} -I../../btree ../../btree/bt_debug.c
+bt_delete.o: ../../btree/bt_delete.c
+ ${CL} -I../../btree ../../btree/bt_delete.c
+bt_get.o: ../../btree/bt_get.c
+ ${CL} -I../../btree ../../btree/bt_get.c
+bt_open.o: ../../btree/bt_open.c
+ ${CL} -I../../btree ../../btree/bt_open.c
+bt_overflow.o: ../../btree/bt_overflow.c
+ ${CL} -I../../btree ../../btree/bt_overflow.c
+bt_page.o: ../../btree/bt_page.c
+ ${CL} -I../../btree ../../btree/bt_page.c
+bt_put.o: ../../btree/bt_put.c
+ ${CL} -I../../btree ../../btree/bt_put.c
+bt_search.o: ../../btree/bt_search.c
+ ${CL} -I../../btree ../../btree/bt_search.c
+bt_seq.o: ../../btree/bt_seq.c
+ ${CL} -I../../btree ../../btree/bt_seq.c
+bt_split.o: ../../btree/bt_split.c
+ ${CL} -I../../btree ../../btree/bt_split.c
+bt_stack.o: ../../btree/bt_stack.c
+ ${CL} -I../../btree ../../btree/bt_stack.c
+bt_utils.o: ../../btree/bt_utils.c
+ ${CL} -I../../btree ../../btree/bt_utils.c
+
+db.o: ../../db/db.c
+ ${CL} ../../db/db.c
+
+mpool.o: ../../mpool/mpool.c
+ ${CL} -I../../mpool ../../mpool/mpool.c
+
+rec_close.o: ../../recno/rec_close.c
+ ${CL} -I../../recno ../../recno/rec_close.c
+rec_delete.o: ../../recno/rec_delete.c
+ ${CL} -I../../recno ../../recno/rec_delete.c
+rec_get.o: ../../recno/rec_get.c
+ ${CL} -I../../recno ../../recno/rec_get.c
+rec_open.o: ../../recno/rec_open.c
+ ${CL} -I../../recno ../../recno/rec_open.c
+rec_put.o: ../../recno/rec_put.c
+ ${CL} -I../../recno ../../recno/rec_put.c
+rec_search.o: ../../recno/rec_search.c
+ ${CL} -I../../recno ../../recno/rec_search.c
+rec_seq.o: ../../recno/rec_seq.c
+ ${CL} -I../../recno ../../recno/rec_seq.c
+rec_utils.o: ../../recno/rec_utils.c
+ ${CL} -I../../recno ../../recno/rec_utils.c
+
+memmove.o:
+ ${CC} -DMEMMOVE -c -O -I. -Iinclude clib/memmove.c
+mktemp.o:
+ ${CC} -c -O -I. -Iinclude clib/mktemp.c
+snprintf.o:
+ ${CC} -c -O -I. -Iinclude clib/snprintf.c
--- /dev/null
+../clib
\ No newline at end of file
--- /dev/null
+../../include/cdefs.h
\ No newline at end of file
--- /dev/null
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)compat.h 8.13 (Berkeley) 2/21/94
+ */
+
+#ifndef _COMPAT_H_
+#define _COMPAT_H_
+
+#include <sys/types.h>
+
+/*
+ * If your system doesn't typedef u_long, u_short, or u_char, change
+ * the 0 to a 1.
+ */
+#if 0
+typedef unsigned char u_char; /* 4.[34]BSD names. */
+typedef unsigned int u_int;
+typedef unsigned long u_long;
+typedef unsigned short u_short;
+#endif
+
+/* If your system doesn't typedef size_t, change the 0 to a 1. */
+#if 0
+typedef unsigned int size_t; /* POSIX, 4.[34]BSD names. */
+#endif
+
+/* If your system doesn't typedef ssize_t, change the 0 to a 1. */
+#if 1
+typedef int ssize_t; /* POSIX names. */
+#endif
+
+/*
+ * If your system doesn't have the POSIX type for a signal mask,
+ * change the 0 to a 1.
+ */
+#if 0 /* POSIX 1003.1 signal mask type. */
+typedef unsigned int sigset_t;
+#endif
+
+/*
+ * If your system's vsprintf returns a char *, not an int,
+ * change the 0 to a 1.
+ */
+#if 1
+#define VSPRINTF_CHARSTAR
+#endif
+
+/*
+ * If you don't have POSIX 1003.1 signals, the signal code surrounding the
+ * temporary file creation is intended to block all of the possible signals
+ * long enough to create the file and unlink it. All of this stuff is
+ * intended to use old-style BSD calls to fake POSIX 1003.1 calls.
+ */
+#ifdef NO_POSIX_SIGNALS
+#define sigemptyset(set) (*(set) = 0)
+#define sigfillset(set) (*(set) = ~(sigset_t)0, 0)
+#define sigaddset(set,signo) (*(set) |= sigmask(signo), 0)
+#define sigdelset(set,signo) (*(set) &= ~sigmask(signo), 0)
+#define sigismember(set,signo) ((*(set) & sigmask(signo)) != 0)
+
+#define SIG_BLOCK 1
+#define SIG_UNBLOCK 2
+#define SIG_SETMASK 3
+
+static int __sigtemp; /* For the use of sigprocmask */
+
+/* Repeated test of oset != NULL is to avoid "*0". */
+#define sigprocmask(how, set, oset) \
+ ((__sigtemp = \
+ (((how) == SIG_BLOCK) ? \
+ sigblock(0) | *(set) : \
+ (((how) == SIG_UNBLOCK) ? \
+ sigblock(0) & ~(*(set)) : \
+ ((how) == SIG_SETMASK ? \
+ *(set) : sigblock(0))))), \
+ ((oset) ? (*(oset ? oset : set) = sigsetmask(__sigtemp)) : \
+ sigsetmask(__sigtemp)), 0)
+#endif
+
+/*
+ * If your system doesn't have an include file with the appropriate
+ * byte order set, make sure you specify the correct one.
+ */
+#ifndef BYTE_ORDER
+#define LITTLE_ENDIAN 1234 /* LSB first: i386, vax */
+#define BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */
+#define BYTE_ORDER BIG_ENDIAN /* Set for your system. */
+#endif
+
+#if defined(SYSV) || defined(SYSTEM5)
+#define index(a, b) strchr(a, b)
+#define rindex(a, b) strrchr(a, b)
+#define bzero(a, b) memset(a, 0, b)
+#define bcmp(a, b, n) memcmp(a, b, n)
+#define bcopy(a, b, n) memmove(b, a, n)
+#endif
+
+#if defined(BSD) || defined(BSD4_3)
+#define strchr(a, b) index(a, b)
+#define strrchr(a, b) rindex(a, b)
+#define memcmp(a, b, n) bcmp(a, b, n)
+#define memmove(a, b, n) bcopy(b, a, n)
+#endif
+
+/*
+ * 32-bit machine. The db routines are theoretically independent of
+ * the size of u_shorts and u_longs, but I don't know that anyone has
+ * ever actually tried it. At a minimum, change the following #define's
+ * if you are trying to compile on a different type of system.
+ */
+#ifndef USHRT_MAX
+#define USHRT_MAX 0xFFFF
+#define ULONG_MAX 0xFFFFFFFF
+#endif
+
+#ifndef O_ACCMODE /* POSIX 1003.1 access mode mask. */
+#define O_ACCMODE (O_RDONLY|O_WRONLY|O_RDWR)
+#endif
+
+#ifndef _POSIX2_RE_DUP_MAX /* POSIX 1003.2 RE limit. */
+#define _POSIX2_RE_DUP_MAX 255
+#endif
+
+/*
+ * If you can't provide lock values in the open(2) call. Note, this
+ * allows races to happen.
+ */
+#ifndef O_EXLOCK /* 4.4BSD extension. */
+#define O_EXLOCK 0
+#endif
+
+#ifndef O_SHLOCK /* 4.4BSD extension. */
+#define O_SHLOCK 0
+#endif
+
+#ifndef EFTYPE
+#define EFTYPE EINVAL /* POSIX 1003.1 format errno. */
+#endif
+
+#ifndef WCOREDUMP /* 4.4BSD extension */
+#define WCOREDUMP(a) 0
+#endif
+
+#ifndef STDERR_FILENO
+#define STDIN_FILENO 0 /* ANSI C #defines */
+#define STDOUT_FILENO 1
+#define STDERR_FILENO 2
+#endif
+
+#ifndef SEEK_END
+#define SEEK_SET 0 /* POSIX 1003.1 seek values */
+#define SEEK_CUR 1
+#define SEEK_END 2
+#endif
+
+#ifndef _POSIX_VDISABLE /* POSIX 1003.1 disabling char. */
+#define _POSIX_VDISABLE 0 /* Some systems used 0. */
+#endif
+
+#ifndef TCSASOFT /* 4.4BSD extension. */
+#define TCSASOFT 0
+#endif
+
+#ifndef _POSIX2_RE_DUP_MAX /* POSIX 1003.2 values. */
+#define _POSIX2_RE_DUP_MAX 255
+#endif
+
+#ifndef NULL /* ANSI C #defines NULL everywhere. */
+#define NULL 0
+#endif
+
+#ifndef MAX /* Usually found in <sys/param.h>. */
+#define MAX(_a,_b) ((_a)<(_b)?(_b):(_a))
+#endif
+#ifndef MIN /* Usually found in <sys/param.h>. */
+#define MIN(_a,_b) ((_a)<(_b)?(_a):(_b))
+#endif
+
+/* Default file permissions. */
+#ifndef DEFFILEMODE /* 4.4BSD extension. */
+#define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
+#endif
+
+#ifndef S_ISDIR /* POSIX 1003.1 file type tests. */
+#define S_ISDIR(m) ((m & 0170000) == 0040000) /* directory */
+#define S_ISCHR(m) ((m & 0170000) == 0020000) /* char special */
+#define S_ISBLK(m) ((m & 0170000) == 0060000) /* block special */
+#define S_ISREG(m) ((m & 0170000) == 0100000) /* regular file */
+#define S_ISFIFO(m) ((m & 0170000) == 0010000) /* fifo */
+#endif
+#ifndef S_ISLNK /* BSD POSIX 1003.1 extensions */
+#define S_ISLNK(m) ((m & 0170000) == 0120000) /* symbolic link */
+#define S_ISSOCK(m) ((m & 0170000) == 0140000) /* socket */
+#endif
+
+/* The type of a va_list. */
+#ifndef _BSD_VA_LIST_ /* 4.4BSD #define. */
+#define _BSD_VA_LIST_ char *
+#endif
+
+#endif /* !_COMPAT_H_ */
--- /dev/null
+../../include/db.h
\ No newline at end of file
--- /dev/null
+../../include/mpool.h
\ No newline at end of file
--- /dev/null
+../../include/ndbm.h
\ No newline at end of file
--- /dev/null
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)pathnames.h 8.5 (Berkeley) 12/21/93
+ */
+
+#define _PATH_BSHELL "/bin/sh"
+#define _PATH_DEVNULL "/dev/null"
+#define _PATH_EXRC ".exrc"
+#define _PATH_NEXRC ".nexrc"
+#define _PATH_PRESERVE "/var/tmp/vi.recover"
+#define _PATH_SENDMAIL "/usr/lib/sendmail"
+#define _PATH_SYSEXRC "/etc/vi.exrc"
+#define _PATH_TAGS "tags /var/db/libc.tags /sys/kern/tags"
+#define _PATH_TMP "/tmp"
+#define _PATH_TTY "/dev/tty"
--- /dev/null
+../../include/queue.h
\ No newline at end of file
--- /dev/null
+include
\ No newline at end of file
--- /dev/null
+sunos.4.1.1
\ No newline at end of file
--- /dev/null
+sunos.4.1.1
\ No newline at end of file
--- /dev/null
+# @(#)Makefile 8.9 (Berkeley) 7/14/94
+
+LIBDB= libdb.a
+OBJ1= hash.o hash_bigkey.o hash_buf.o hash_func.o hash_log2.o hash_page.o \
+ hsearch.o ndbm.o
+OBJ2= bt_close.o bt_conv.o bt_debug.o bt_delete.o bt_get.o bt_open.o \
+ bt_overflow.o bt_page.o bt_put.o bt_search.o bt_seq.o bt_split.o \
+ bt_utils.o
+OBJ3= db.o
+OBJ4= mpool.o
+OBJ5= rec_close.o rec_delete.o rec_get.o rec_open.o rec_put.o rec_search.o \
+ rec_seq.o rec_utils.o
+
+MISC= snprintf.o
+
+${LIBDB}: ${OBJ1} ${OBJ2} ${OBJ3} ${OBJ4} ${OBJ5} ${MISC}
+ rm -f $@
+ ar cq $@ \
+ `lorder ${OBJ1} ${OBJ2} ${OBJ3} ${OBJ4} ${OBJ5} ${MISC} | tsort`
+ ranlib $@
+
+clean:
+ rm -f ${LIBDB} ${OBJ1} ${OBJ2} ${OBJ3} ${OBJ4} ${OBJ5} ${MISC}
+
+OORG= -O
+CL= ${CC} -c -D__DBINTERFACE_PRIVATE ${OORG} -I. -Iinclude
+
+hash.o: ../../hash/hash.c
+ ${CL} -I../../hash ../../hash/hash.c
+hash_bigkey.o: ../../hash/hash_bigkey.c
+ ${CL} -I../../hash ../../hash/hash_bigkey.c
+hash_buf.o: ../../hash/hash_buf.c
+ ${CL} -I../../hash ../../hash/hash_buf.c
+hash_func.o: ../../hash/hash_func.c
+ ${CL} -I../../hash ../../hash/hash_func.c
+hash_log2.o: ../../hash/hash_log2.c
+ ${CL} -I../../hash ../../hash/hash_log2.c
+hash_page.o: ../../hash/hash_page.c
+ ${CL} -I../../hash ../../hash/hash_page.c
+hsearch.o: ../../hash/hsearch.c
+ ${CL} -I../../hash ../../hash/hsearch.c
+ndbm.o: ../../hash/ndbm.c
+ ${CL} -I../../hash ../../hash/ndbm.c
+
+bt_close.o: ../../btree/bt_close.c
+ ${CL} -I../../btree ../../btree/bt_close.c
+bt_conv.o: ../../btree/bt_conv.c
+ ${CL} -I../../btree ../../btree/bt_conv.c
+bt_debug.o: ../../btree/bt_debug.c
+ ${CL} -I../../btree ../../btree/bt_debug.c
+bt_delete.o: ../../btree/bt_delete.c
+ ${CL} -I../../btree ../../btree/bt_delete.c
+bt_get.o: ../../btree/bt_get.c
+ ${CL} -I../../btree ../../btree/bt_get.c
+bt_open.o: ../../btree/bt_open.c
+ ${CL} -I../../btree ../../btree/bt_open.c
+bt_overflow.o: ../../btree/bt_overflow.c
+ ${CL} -I../../btree ../../btree/bt_overflow.c
+bt_page.o: ../../btree/bt_page.c
+ ${CL} -I../../btree ../../btree/bt_page.c
+bt_put.o: ../../btree/bt_put.c
+ ${CL} -I../../btree ../../btree/bt_put.c
+bt_search.o: ../../btree/bt_search.c
+ ${CL} -I../../btree ../../btree/bt_search.c
+bt_seq.o: ../../btree/bt_seq.c
+ ${CL} -I../../btree ../../btree/bt_seq.c
+bt_split.o: ../../btree/bt_split.c
+ ${CL} -I../../btree ../../btree/bt_split.c
+bt_stack.o: ../../btree/bt_stack.c
+ ${CL} -I../../btree ../../btree/bt_stack.c
+bt_utils.o: ../../btree/bt_utils.c
+ ${CL} -I../../btree ../../btree/bt_utils.c
+
+db.o: ../../db/db.c
+ ${CL} ../../db/db.c
+
+mpool.o: ../../mpool/mpool.c
+ ${CL} -I../../mpool ../../mpool/mpool.c
+
+rec_close.o: ../../recno/rec_close.c
+ ${CL} -I../../recno ../../recno/rec_close.c
+rec_delete.o: ../../recno/rec_delete.c
+ ${CL} -I../../recno ../../recno/rec_delete.c
+rec_get.o: ../../recno/rec_get.c
+ ${CL} -I../../recno ../../recno/rec_get.c
+rec_open.o: ../../recno/rec_open.c
+ ${CL} -I../../recno ../../recno/rec_open.c
+rec_put.o: ../../recno/rec_put.c
+ ${CL} -I../../recno ../../recno/rec_put.c
+rec_search.o: ../../recno/rec_search.c
+ ${CL} -I../../recno ../../recno/rec_search.c
+rec_seq.o: ../../recno/rec_seq.c
+ ${CL} -I../../recno ../../recno/rec_seq.c
+rec_utils.o: ../../recno/rec_utils.c
+ ${CL} -I../../recno ../../recno/rec_utils.c
+
+memmove.o:
+ ${CC} -DMEMMOVE -c -O -I. -Iinclude clib/memmove.c
+mktemp.o:
+ ${CC} -c -O -I. -Iinclude clib/mktemp.c
+snprintf.o:
+ ${CC} -c -O -I. -Iinclude clib/snprintf.c
--- /dev/null
+../clib
\ No newline at end of file
--- /dev/null
+../../include/cdefs.h
\ No newline at end of file
--- /dev/null
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)compat.h 8.13 (Berkeley) 2/21/94
+ */
+
+#ifndef _COMPAT_H_
+#define _COMPAT_H_
+
+#include <sys/types.h>
+
+#define NO_ERRLIST
+
+/*
+ * If your system doesn't typedef u_long, u_short, or u_char, change
+ * the 0 to a 1.
+ */
+#if 0
+typedef unsigned char u_char; /* 4.[34]BSD names. */
+typedef unsigned int u_int;
+typedef unsigned long u_long;
+typedef unsigned short u_short;
+#endif
+
+/* If your system doesn't typedef size_t, change the 0 to a 1. */
+#if 0
+typedef unsigned int size_t; /* POSIX, 4.[34]BSD names. */
+#endif
+
+/* If your system doesn't typedef ssize_t, change the 0 to a 1. */
+#if 0
+typedef int ssize_t; /* POSIX names. */
+#endif
+
+/*
+ * If your system doesn't have the POSIX type for a signal mask,
+ * change the 0 to a 1.
+ */
+#if 0 /* POSIX 1003.1 signal mask type. */
+typedef unsigned int sigset_t;
+#endif
+
+
+#define write _write
+
+/*
+ * If your system's vsprintf returns a char *, not an int,
+ * change the 0 to a 1.
+ */
+#if 0
+#define VSPRINTF_CHARSTAR
+#endif
+
+/*
+ * If you don't have POSIX 1003.1 signals, the signal code surrounding the
+ * temporary file creation is intended to block all of the possible signals
+ * long enough to create the file and unlink it. All of this stuff is
+ * intended to use old-style BSD calls to fake POSIX 1003.1 calls.
+ */
+#ifdef NO_POSIX_SIGNALS
+#define sigemptyset(set) (*(set) = 0)
+#define sigfillset(set) (*(set) = ~(sigset_t)0, 0)
+#define sigaddset(set,signo) (*(set) |= sigmask(signo), 0)
+#define sigdelset(set,signo) (*(set) &= ~sigmask(signo), 0)
+#define sigismember(set,signo) ((*(set) & sigmask(signo)) != 0)
+
+#define SIG_BLOCK 1
+#define SIG_UNBLOCK 2
+#define SIG_SETMASK 3
+
+static int __sigtemp; /* For the use of sigprocmask */
+
+/* Repeated test of oset != NULL is to avoid "*0". */
+#define sigprocmask(how, set, oset) \
+ ((__sigtemp = \
+ (((how) == SIG_BLOCK) ? \
+ sigblock(0) | *(set) : \
+ (((how) == SIG_UNBLOCK) ? \
+ sigblock(0) & ~(*(set)) : \
+ ((how) == SIG_SETMASK ? \
+ *(set) : sigblock(0))))), \
+ ((oset) ? (*(oset ? oset : set) = sigsetmask(__sigtemp)) : \
+ sigsetmask(__sigtemp)), 0)
+#endif
+
+/*
+ * If your system doesn't have an include file with the appropriate
+ * byte order set, make sure you specify the correct one.
+ */
+#ifndef BYTE_ORDER
+#define LITTLE_ENDIAN 1234 /* LSB first: i386, vax */
+#define BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */
+#define BYTE_ORDER BIG_ENDIAN /* Set for your system. */
+#endif
+
+#if defined(SYSV) || defined(SYSTEM5)
+#define index(a, b) strchr(a, b)
+#define rindex(a, b) strrchr(a, b)
+#define bzero(a, b) memset(a, 0, b)
+#define bcmp(a, b, n) memcmp(a, b, n)
+#define bcopy(a, b, n) memmove(b, a, n)
+#endif
+
+#if defined(BSD) || defined(BSD4_3)
+#define strchr(a, b) index(a, b)
+#define strrchr(a, b) rindex(a, b)
+#define memcmp(a, b, n) bcmp(a, b, n)
+#define memmove(a, b, n) bcopy(b, a, n)
+#endif
+
+/*
+ * 32-bit machine. The db routines are theoretically independent of
+ * the size of u_shorts and u_longs, but I don't know that anyone has
+ * ever actually tried it. At a minimum, change the following #define's
+ * if you are trying to compile on a different type of system.
+ */
+#ifndef USHRT_MAX
+#define USHRT_MAX 0xFFFF
+#define ULONG_MAX 0xFFFFFFFF
+#endif
+
+#ifndef O_ACCMODE /* POSIX 1003.1 access mode mask. */
+#define O_ACCMODE (O_RDONLY|O_WRONLY|O_RDWR)
+#endif
+
+#ifndef _POSIX2_RE_DUP_MAX /* POSIX 1003.2 RE limit. */
+#define _POSIX2_RE_DUP_MAX 255
+#endif
+
+/*
+ * If you can't provide lock values in the open(2) call. Note, this
+ * allows races to happen.
+ */
+#ifndef O_EXLOCK /* 4.4BSD extension. */
+#define O_EXLOCK 0
+#endif
+
+#ifndef O_SHLOCK /* 4.4BSD extension. */
+#define O_SHLOCK 0
+#endif
+
+#ifndef EFTYPE
+#define EFTYPE EINVAL /* POSIX 1003.1 format errno. */
+#endif
+
+#ifndef WCOREDUMP /* 4.4BSD extension */
+#define WCOREDUMP(a) 0
+#endif
+
+#ifndef STDERR_FILENO
+#define STDIN_FILENO 0 /* ANSI C #defines */
+#define STDOUT_FILENO 1
+#define STDERR_FILENO 2
+#endif
+
+#ifndef SEEK_END
+#define SEEK_SET 0 /* POSIX 1003.1 seek values */
+#define SEEK_CUR 1
+#define SEEK_END 2
+#endif
+
+#ifndef _POSIX_VDISABLE /* POSIX 1003.1 disabling char. */
+#define _POSIX_VDISABLE 0 /* Some systems used 0. */
+#endif
+
+#ifndef TCSASOFT /* 4.4BSD extension. */
+#define TCSASOFT 0
+#endif
+
+#ifndef _POSIX2_RE_DUP_MAX /* POSIX 1003.2 values. */
+#define _POSIX2_RE_DUP_MAX 255
+#endif
+
+#ifndef NULL /* ANSI C #defines NULL everywhere. */
+#define NULL 0
+#endif
+
+#ifndef MAX /* Usually found in <sys/param.h>. */
+#define MAX(_a,_b) ((_a)<(_b)?(_b):(_a))
+#endif
+#ifndef MIN /* Usually found in <sys/param.h>. */
+#define MIN(_a,_b) ((_a)<(_b)?(_a):(_b))
+#endif
+
+/* Default file permissions. */
+#ifndef DEFFILEMODE /* 4.4BSD extension. */
+#define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
+#endif
+
+#ifndef S_ISDIR /* POSIX 1003.1 file type tests. */
+#define S_ISDIR(m) ((m & 0170000) == 0040000) /* directory */
+#define S_ISCHR(m) ((m & 0170000) == 0020000) /* char special */
+#define S_ISBLK(m) ((m & 0170000) == 0060000) /* block special */
+#define S_ISREG(m) ((m & 0170000) == 0100000) /* regular file */
+#define S_ISFIFO(m) ((m & 0170000) == 0010000) /* fifo */
+#endif
+#ifndef S_ISLNK /* BSD POSIX 1003.1 extensions */
+#define S_ISLNK(m) ((m & 0170000) == 0120000) /* symbolic link */
+#define S_ISSOCK(m) ((m & 0170000) == 0140000) /* socket */
+#endif
+
+/* The type of a va_list. */
+#ifndef _BSD_VA_LIST_ /* 4.4BSD #define. */
+#define _BSD_VA_LIST_ char *
+#endif
+
+#endif /* !_COMPAT_H_ */
--- /dev/null
+../../include/db.h
\ No newline at end of file
--- /dev/null
+../../include/mpool.h
\ No newline at end of file
--- /dev/null
+../../include/ndbm.h
\ No newline at end of file
--- /dev/null
+../../include/queue.h
\ No newline at end of file
--- /dev/null
+include
\ No newline at end of file
--- /dev/null
+# @(#)Makefile 8.9 (Berkeley) 7/14/94
+
+LIBDB= libdb.a
+OBJ1= hash.o hash_bigkey.o hash_buf.o hash_func.o hash_log2.o hash_page.o \
+ hsearch.o ndbm.o
+OBJ2= bt_close.o bt_conv.o bt_debug.o bt_delete.o bt_get.o bt_open.o \
+ bt_overflow.o bt_page.o bt_put.o bt_search.o bt_seq.o bt_split.o \
+ bt_utils.o
+OBJ3= db.o
+OBJ4= mpool.o
+OBJ5= rec_close.o rec_delete.o rec_get.o rec_open.o rec_put.o rec_search.o \
+ rec_seq.o rec_utils.o
+
+MISC= mktemp.o snprintf.o
+
+${LIBDB}: ${OBJ1} ${OBJ2} ${OBJ3} ${OBJ4} ${OBJ5} ${MISC}
+ rm -f $@
+ ar cq $@ \
+ `lorder ${OBJ1} ${OBJ2} ${OBJ3} ${OBJ4} ${OBJ5} ${MISC} | tsort`
+ ranlib $@
+
+clean:
+ rm -f ${LIBDB} ${OBJ1} ${OBJ2} ${OBJ3} ${OBJ4} ${OBJ5} ${MISC}
+
+OORG= -O
+CL= ${CC} -c -D__DBINTERFACE_PRIVATE ${OORG} -I. -Iinclude
+
+hash.o: ../../hash/hash.c
+ ${CL} -I../../hash ../../hash/hash.c
+hash_bigkey.o: ../../hash/hash_bigkey.c
+ ${CL} -I../../hash ../../hash/hash_bigkey.c
+hash_buf.o: ../../hash/hash_buf.c
+ ${CL} -I../../hash ../../hash/hash_buf.c
+hash_func.o: ../../hash/hash_func.c
+ ${CL} -I../../hash ../../hash/hash_func.c
+hash_log2.o: ../../hash/hash_log2.c
+ ${CL} -I../../hash ../../hash/hash_log2.c
+hash_page.o: ../../hash/hash_page.c
+ ${CL} -I../../hash ../../hash/hash_page.c
+hsearch.o: ../../hash/hsearch.c
+ ${CL} -I../../hash ../../hash/hsearch.c
+ndbm.o: ../../hash/ndbm.c
+ ${CL} -I../../hash ../../hash/ndbm.c
+
+bt_close.o: ../../btree/bt_close.c
+ ${CL} -I../../btree ../../btree/bt_close.c
+bt_conv.o: ../../btree/bt_conv.c
+ ${CL} -I../../btree ../../btree/bt_conv.c
+bt_debug.o: ../../btree/bt_debug.c
+ ${CL} -I../../btree ../../btree/bt_debug.c
+bt_delete.o: ../../btree/bt_delete.c
+ ${CL} -I../../btree ../../btree/bt_delete.c
+bt_get.o: ../../btree/bt_get.c
+ ${CL} -I../../btree ../../btree/bt_get.c
+bt_open.o: ../../btree/bt_open.c
+ ${CL} -I../../btree ../../btree/bt_open.c
+bt_overflow.o: ../../btree/bt_overflow.c
+ ${CL} -I../../btree ../../btree/bt_overflow.c
+bt_page.o: ../../btree/bt_page.c
+ ${CL} -I../../btree ../../btree/bt_page.c
+bt_put.o: ../../btree/bt_put.c
+ ${CL} -I../../btree ../../btree/bt_put.c
+bt_search.o: ../../btree/bt_search.c
+ ${CL} -I../../btree ../../btree/bt_search.c
+bt_seq.o: ../../btree/bt_seq.c
+ ${CL} -I../../btree ../../btree/bt_seq.c
+bt_split.o: ../../btree/bt_split.c
+ ${CL} -I../../btree ../../btree/bt_split.c
+bt_stack.o: ../../btree/bt_stack.c
+ ${CL} -I../../btree ../../btree/bt_stack.c
+bt_utils.o: ../../btree/bt_utils.c
+ ${CL} -I../../btree ../../btree/bt_utils.c
+
+db.o: ../../db/db.c
+ ${CL} ../../db/db.c
+
+mpool.o: ../../mpool/mpool.c
+ ${CL} -I../../mpool ../../mpool/mpool.c
+
+rec_close.o: ../../recno/rec_close.c
+ ${CL} -I../../recno ../../recno/rec_close.c
+rec_delete.o: ../../recno/rec_delete.c
+ ${CL} -I../../recno ../../recno/rec_delete.c
+rec_get.o: ../../recno/rec_get.c
+ ${CL} -I../../recno ../../recno/rec_get.c
+rec_open.o: ../../recno/rec_open.c
+ ${CL} -I../../recno ../../recno/rec_open.c
+rec_put.o: ../../recno/rec_put.c
+ ${CL} -I../../recno ../../recno/rec_put.c
+rec_search.o: ../../recno/rec_search.c
+ ${CL} -I../../recno ../../recno/rec_search.c
+rec_seq.o: ../../recno/rec_seq.c
+ ${CL} -I../../recno ../../recno/rec_seq.c
+rec_utils.o: ../../recno/rec_utils.c
+ ${CL} -I../../recno ../../recno/rec_utils.c
+
+memmove.o:
+ ${CC} -DMEMMOVE -c -O -I. -Iinclude clib/memmove.c
+mktemp.o:
+ ${CC} -c -O -I. -Iinclude clib/mktemp.c
+snprintf.o:
+ ${CC} -c -O -I. -Iinclude clib/snprintf.c
--- /dev/null
+../clib
\ No newline at end of file
--- /dev/null
+../../include/cdefs.h
\ No newline at end of file
--- /dev/null
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)compat.h 8.13 (Berkeley) 2/21/94
+ */
+
+#ifndef _COMPAT_H_
+#define _COMPAT_H_
+
+#include <sys/types.h>
+
+/*
+ * If your system doesn't typedef u_long, u_short, or u_char, change
+ * the 0 to a 1.
+ */
+#if 0
+typedef unsigned char u_char; /* 4.[34]BSD names. */
+typedef unsigned int u_int;
+typedef unsigned long u_long;
+typedef unsigned short u_short;
+#endif
+
+/* If your system doesn't typedef size_t, change the 0 to a 1. */
+#if 0
+typedef unsigned int size_t; /* POSIX, 4.[34]BSD names. */
+#endif
+
+/* If your system doesn't typedef ssize_t, change the 0 to a 1. */
+#if 1
+typedef int ssize_t; /* POSIX names. */
+#endif
+
+/*
+ * If your system doesn't have the POSIX type for a signal mask,
+ * change the 0 to a 1.
+ */
+#if 0 /* POSIX 1003.1 signal mask type. */
+typedef unsigned int sigset_t;
+#endif
+
+/*
+ * If your system's vsprintf returns a char *, not an int,
+ * change the 0 to a 1.
+ */
+#if 0
+#define VSPRINTF_CHARSTAR
+#endif
+
+/*
+ * If you don't have POSIX 1003.1 signals, the signal code surrounding the
+ * temporary file creation is intended to block all of the possible signals
+ * long enough to create the file and unlink it. All of this stuff is
+ * intended to use old-style BSD calls to fake POSIX 1003.1 calls.
+ */
+#ifdef NO_POSIX_SIGNALS
+#define sigemptyset(set) (*(set) = 0)
+#define sigfillset(set) (*(set) = ~(sigset_t)0, 0)
+#define sigaddset(set,signo) (*(set) |= sigmask(signo), 0)
+#define sigdelset(set,signo) (*(set) &= ~sigmask(signo), 0)
+#define sigismember(set,signo) ((*(set) & sigmask(signo)) != 0)
+
+#define SIG_BLOCK 1
+#define SIG_UNBLOCK 2
+#define SIG_SETMASK 3
+
+static int __sigtemp; /* For the use of sigprocmask */
+
+/* Repeated test of oset != NULL is to avoid "*0". */
+#define sigprocmask(how, set, oset) \
+ ((__sigtemp = \
+ (((how) == SIG_BLOCK) ? \
+ sigblock(0) | *(set) : \
+ (((how) == SIG_UNBLOCK) ? \
+ sigblock(0) & ~(*(set)) : \
+ ((how) == SIG_SETMASK ? \
+ *(set) : sigblock(0))))), \
+ ((oset) ? (*(oset ? oset : set) = sigsetmask(__sigtemp)) : \
+ sigsetmask(__sigtemp)), 0)
+#endif
+
+/*
+ * If your system doesn't have an include file with the appropriate
+ * byte order set, make sure you specify the correct one.
+ */
+#ifndef BYTE_ORDER
+#define LITTLE_ENDIAN 1234 /* LSB first: i386, vax */
+#define BIG_ENDIAN 4321 /* MSB first: 68000, ibm, net */
+#define BYTE_ORDER LITTLE_ENDIAN /* Set for your system. */
+#endif
+
+#if defined(SYSV) || defined(SYSTEM5)
+#define index(a, b) strchr(a, b)
+#define rindex(a, b) strrchr(a, b)
+#define bzero(a, b) memset(a, 0, b)
+#define bcmp(a, b, n) memcmp(a, b, n)
+#define bcopy(a, b, n) memmove(b, a, n)
+#endif
+
+#if defined(BSD) || defined(BSD4_3)
+#define strchr(a, b) index(a, b)
+#define strrchr(a, b) rindex(a, b)
+#define memcmp(a, b, n) bcmp(a, b, n)
+#define memmove(a, b, n) bcopy(b, a, n)
+#endif
+
+/*
+ * 32-bit machine. The db routines are theoretically independent of
+ * the size of u_shorts and u_longs, but I don't know that anyone has
+ * ever actually tried it. At a minimum, change the following #define's
+ * if you are trying to compile on a different type of system.
+ */
+#ifndef USHRT_MAX
+#define USHRT_MAX 0xFFFF
+#define ULONG_MAX 0xFFFFFFFF
+#endif
+
+#ifndef O_ACCMODE /* POSIX 1003.1 access mode mask. */
+#define O_ACCMODE (O_RDONLY|O_WRONLY|O_RDWR)
+#endif
+
+#ifndef _POSIX2_RE_DUP_MAX /* POSIX 1003.2 RE limit. */
+#define _POSIX2_RE_DUP_MAX 255
+#endif
+
+/*
+ * If you can't provide lock values in the open(2) call. Note, this
+ * allows races to happen.
+ */
+#ifndef O_EXLOCK /* 4.4BSD extension. */
+#define O_EXLOCK 0
+#endif
+
+#ifndef O_SHLOCK /* 4.4BSD extension. */
+#define O_SHLOCK 0
+#endif
+
+#ifndef EFTYPE
+#define EFTYPE EINVAL /* POSIX 1003.1 format errno. */
+#endif
+
+#ifndef WCOREDUMP /* 4.4BSD extension */
+#define WCOREDUMP(a) 0
+#endif
+
+#ifndef STDERR_FILENO
+#define STDIN_FILENO 0 /* ANSI C #defines */
+#define STDOUT_FILENO 1
+#define STDERR_FILENO 2
+#endif
+
+#ifndef SEEK_END
+#define SEEK_SET 0 /* POSIX 1003.1 seek values */
+#define SEEK_CUR 1
+#define SEEK_END 2
+#endif
+
+#ifndef _POSIX_VDISABLE /* POSIX 1003.1 disabling char. */
+#define _POSIX_VDISABLE 0 /* Some systems used 0. */
+#endif
+
+#ifndef TCSASOFT /* 4.4BSD extension. */
+#define TCSASOFT 0
+#endif
+
+#ifndef _POSIX2_RE_DUP_MAX /* POSIX 1003.2 values. */
+#define _POSIX2_RE_DUP_MAX 255
+#endif
+
+#ifndef NULL /* ANSI C #defines NULL everywhere. */
+#define NULL 0
+#endif
+
+#ifndef MAX /* Usually found in <sys/param.h>. */
+#define MAX(_a,_b) ((_a)<(_b)?(_b):(_a))
+#endif
+#ifndef MIN /* Usually found in <sys/param.h>. */
+#define MIN(_a,_b) ((_a)<(_b)?(_a):(_b))
+#endif
+
+/* Default file permissions. */
+#ifndef DEFFILEMODE /* 4.4BSD extension. */
+#define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)
+#endif
+
+#ifndef S_ISDIR /* POSIX 1003.1 file type tests. */
+#define S_ISDIR(m) ((m & 0170000) == 0040000) /* directory */
+#define S_ISCHR(m) ((m & 0170000) == 0020000) /* char special */
+#define S_ISBLK(m) ((m & 0170000) == 0060000) /* block special */
+#define S_ISREG(m) ((m & 0170000) == 0100000) /* regular file */
+#define S_ISFIFO(m) ((m & 0170000) == 0010000) /* fifo */
+#endif
+#ifndef S_ISLNK /* BSD POSIX 1003.1 extensions */
+#define S_ISLNK(m) ((m & 0170000) == 0120000) /* symbolic link */
+#define S_ISSOCK(m) ((m & 0170000) == 0140000) /* socket */
+#endif
+
+/* The type of a va_list. */
+#ifndef _BSD_VA_LIST_ /* 4.4BSD #define. */
+#define _BSD_VA_LIST_ char *
+#endif
+
+#endif /* !_COMPAT_H_ */
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)db.h 8.7 (Berkeley) 6/16/94
+ */
+
+#ifndef _DB_H_
+#define _DB_H_
+
+#include <sys/types.h>
+#include <sys/cdefs.h>
+
+#include <limits.h>
+
+#ifdef __DBINTERFACE_PRIVATE
+#include <compat.h>
+#endif
+
+#define RET_ERROR -1 /* Return values. */
+#define RET_SUCCESS 0
+#define RET_SPECIAL 1
+
+#ifndef __BIT_TYPES_DEFINED__
+#define __BIT_TYPES_DEFINED__
+typedef __signed char int8_t;
+typedef unsigned char u_int8_t;
+typedef short int16_t;
+typedef unsigned short u_int16_t;
+typedef int int32_t;
+typedef unsigned int u_int32_t;
+#ifdef WE_DONT_NEED_QUADS
+typedef long long int64_t;
+typedef unsigned long long u_int64_t;
+#endif
+#endif
+
+#define MAX_PAGE_NUMBER 0xffffffff /* >= # of pages in a file */
+typedef u_int32_t pgno_t;
+#define MAX_PAGE_OFFSET 65535 /* >= # of bytes in a page */
+typedef u_int16_t indx_t;
+#define MAX_REC_NUMBER 0xffffffff /* >= # of records in a tree */
+typedef u_int32_t recno_t;
+
+/* Key/data structure -- a Data-Base Thang. */
+typedef struct {
+ void *data; /* data */
+ size_t size; /* data length */
+} DBT;
+
+/* Routine flags. */
+#define R_CURSOR 1 /* del, put, seq */
+#define __R_UNUSED 2 /* UNUSED */
+#define R_FIRST 3 /* seq */
+#define R_IAFTER 4 /* put (RECNO) */
+#define R_IBEFORE 5 /* put (RECNO) */
+#define R_LAST 6 /* seq (BTREE, RECNO) */
+#define R_NEXT 7 /* seq */
+#define R_NOOVERWRITE 8 /* put */
+#define R_PREV 9 /* seq (BTREE, RECNO) */
+#define R_SETCURSOR 10 /* put (RECNO) */
+#define R_RECNOSYNC 11 /* sync (RECNO) */
+
+typedef enum { DB_BTREE, DB_HASH, DB_RECNO } DBTYPE;
+
+/*
+ * !!!
+ * The following flags are included in the dbopen(3) call as part of the
+ * open(2) flags. In order to avoid conflicts with the open flags, start
+ * at the top of the 16 or 32-bit number space and work our way down. If
+ * the open flags were significantly expanded in the future, it could be
+ * a problem. Wish I'd left another flags word in the dbopen call.
+ *
+ * !!!
+ * None of this stuff is implemented yet. The only reason that it's here
+ * is so that the access methods can skip copying the key/data pair when
+ * the DB_LOCK flag isn't set.
+ */
+#define DB_LOCK 0x20000000 /* Do locking. */
+#define DB_SHMEM 0x40000000 /* Use shared memory. */
+#define DB_TXN 0x80000000 /* Do transactions. */
+
+/* Access method description structure. */
+typedef struct __db {
+ DBTYPE type; /* Underlying db type. */
+ int (*close) __P((struct __db *));
+ int (*del) __P((const struct __db *, const DBT *, u_int));
+ int (*get) __P((const struct __db *, const DBT *, DBT *, u_int));
+ int (*put) __P((const struct __db *, DBT *, const DBT *, u_int));
+ int (*seq) __P((const struct __db *, DBT *, DBT *, u_int));
+ int (*sync) __P((const struct __db *, u_int));
+ void *internal; /* Access method private. */
+ int (*fd) __P((const struct __db *));
+} DB;
+
+#define BTREEMAGIC 0x053162
+#define BTREEVERSION 3
+
+/* Structure used to pass parameters to the btree routines. */
+typedef struct {
+#define R_DUP 0x01 /* duplicate keys */
+ u_long flags;
+ u_int cachesize; /* bytes to cache */
+ int maxkeypage; /* maximum keys per page */
+ int minkeypage; /* minimum keys per page */
+ u_int psize; /* page size */
+ int (*compare) /* comparison function */
+ __P((const DBT *, const DBT *));
+ size_t (*prefix) /* prefix function */
+ __P((const DBT *, const DBT *));
+ int lorder; /* byte order */
+} BTREEINFO;
+
+#define HASHMAGIC 0x061561
+#define HASHVERSION 2
+
+/* Structure used to pass parameters to the hashing routines. */
+typedef struct {
+ u_int bsize; /* bucket size */
+ u_int ffactor; /* fill factor */
+ u_int nelem; /* number of elements */
+ u_int cachesize; /* bytes to cache */
+ u_int32_t /* hash function */
+ (*hash) __P((const void *, size_t));
+ int lorder; /* byte order */
+} HASHINFO;
+
+/* Structure used to pass parameters to the record routines. */
+typedef struct {
+#define R_FIXEDLEN 0x01 /* fixed-length records */
+#define R_NOKEY 0x02 /* key not required */
+#define R_SNAPSHOT 0x04 /* snapshot the input */
+ u_long flags;
+ u_int cachesize; /* bytes to cache */
+ u_int psize; /* page size */
+ int lorder; /* byte order */
+ size_t reclen; /* record length (fixed-length records) */
+ u_char bval; /* delimiting byte (variable-length records */
+ char *bfname; /* btree file name */
+} RECNOINFO;
+
+#ifdef __DBINTERFACE_PRIVATE
+/*
+ * Little endian <==> big endian 32-bit swap macros.
+ * M_32_SWAP swap a memory location
+ * P_32_SWAP swap a referenced memory location
+ * P_32_COPY swap from one location to another
+ */
+#define M_32_SWAP(a) { \
+ u_int32_t _tmp = a; \
+ ((char *)&a)[0] = ((char *)&_tmp)[3]; \
+ ((char *)&a)[1] = ((char *)&_tmp)[2]; \
+ ((char *)&a)[2] = ((char *)&_tmp)[1]; \
+ ((char *)&a)[3] = ((char *)&_tmp)[0]; \
+}
+#define P_32_SWAP(a) { \
+ u_int32_t _tmp = *(u_int32_t *)a; \
+ ((char *)a)[0] = ((char *)&_tmp)[3]; \
+ ((char *)a)[1] = ((char *)&_tmp)[2]; \
+ ((char *)a)[2] = ((char *)&_tmp)[1]; \
+ ((char *)a)[3] = ((char *)&_tmp)[0]; \
+}
+#define P_32_COPY(a, b) { \
+ ((char *)&(b))[0] = ((char *)&(a))[3]; \
+ ((char *)&(b))[1] = ((char *)&(a))[2]; \
+ ((char *)&(b))[2] = ((char *)&(a))[1]; \
+ ((char *)&(b))[3] = ((char *)&(a))[0]; \
+}
+
+/*
+ * Little endian <==> big endian 16-bit swap macros.
+ * M_16_SWAP swap a memory location
+ * P_16_SWAP swap a referenced memory location
+ * P_16_COPY swap from one location to another
+ */
+#define M_16_SWAP(a) { \
+ u_int16_t _tmp = a; \
+ ((char *)&a)[0] = ((char *)&_tmp)[1]; \
+ ((char *)&a)[1] = ((char *)&_tmp)[0]; \
+}
+#define P_16_SWAP(a) { \
+ u_int16_t _tmp = *(u_int16_t *)a; \
+ ((char *)a)[0] = ((char *)&_tmp)[1]; \
+ ((char *)a)[1] = ((char *)&_tmp)[0]; \
+}
+#define P_16_COPY(a, b) { \
+ ((char *)&(b))[0] = ((char *)&(a))[1]; \
+ ((char *)&(b))[1] = ((char *)&(a))[0]; \
+}
+#endif
+
+__BEGIN_DECLS
+DB *dbopen __P((const char *, int, int, DBTYPE, const void *));
+
+#ifdef __DBINTERFACE_PRIVATE
+DB *__bt_open __P((const char *, int, int, const BTREEINFO *, int));
+DB *__hash_open __P((const char *, int, int, const HASHINFO *, int));
+DB *__rec_open __P((const char *, int, int, const RECNOINFO *, int));
+void __dbpanic __P((DB *dbp));
+#endif
+__END_DECLS
+#endif /* !_DB_H_ */
--- /dev/null
+../../include/mpool.h
\ No newline at end of file
--- /dev/null
+../../include/ndbm.h
\ No newline at end of file
--- /dev/null
+../../include/queue.h
\ No newline at end of file
--- /dev/null
+include
\ No newline at end of file
--- /dev/null
+ultrix.4.2
\ No newline at end of file
--- /dev/null
+# @(#)README 8.27 (Berkeley) 9/1/94
+
+This is version 1.85 of the Berkeley DB code.
+
+For information on compiling and installing this software, see the file
+PORT/README.
+
+Newer versions of this software will periodically be made available by
+anonymous ftp from ftp.cs.berkeley.edu. An archive in compressed format
+is in ucb/4bsd/db.tar.Z, or in gzip format in ucb/4bsd/db.tar.gz. If
+you'd like to receive announcements of future releases of this software,
+send email to the contact address below.
+
+Email questions may be addressed to Keith Bostic at bostic@cs.berkeley.edu.
+
+============================================
+Distribution contents:
+
+Makefile.inc Ignore this, it's the 4.4BSD subsystem Makefile.
+PORT The per OS/architecture directories to use to build
+ libdb.a, if you're not running 4.4BSD. See the file
+ PORT/README for more information.
+README This file.
+btree The B+tree routines.
+changelog List of changes, per version.
+db The dbopen(3) interface routine.
+docs Various USENIX papers, and the formatted manual pages.
+hash The extended linear hashing routines.
+man The unformatted manual pages.
+mpool The memory pool routines.
+recno The fixed/variable length record routines.
+test Test package.
+
+============================================
+Debugging:
+
+If you're running a memory checker (e.g. Purify) on DB, make sure that
+you recompile it with "-DPURIFY" in the CFLAGS, first. By default,
+allocated pages are not initialized by the DB code, and they will show
+up as reads of uninitialized memory in the buffer write routines.
--- /dev/null
+# @(#)Makefile.inc 8.2 (Berkeley) 7/14/94
+
+.PATH: ${.CURDIR}/db/btree
+
+SRCS+= bt_close.c bt_conv.c bt_debug.c bt_delete.c bt_get.c bt_open.c \
+ bt_overflow.c bt_page.c bt_put.c bt_search.c bt_seq.c bt_split.c \
+ bt_utils.c
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Mike Olson.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)bt_close.c 8.7 (Berkeley) 8/17/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <db.h>
+#include "btree.h"
+
+static int bt_meta __P((BTREE *));
+
+/*
+ * BT_CLOSE -- Close a btree.
+ *
+ * Parameters:
+ * dbp: pointer to access method
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS
+ */
+int
+__bt_close(dbp)
+ DB *dbp;
+{
+ BTREE *t;
+ int fd;
+
+ t = dbp->internal;
+
+ /* Toss any page pinned across calls. */
+ if (t->bt_pinned != NULL) {
+ mpool_put(t->bt_mp, t->bt_pinned, 0);
+ t->bt_pinned = NULL;
+ }
+
+ /* Sync the tree. */
+ if (__bt_sync(dbp, 0) == RET_ERROR)
+ return (RET_ERROR);
+
+ /* Close the memory pool. */
+ if (mpool_close(t->bt_mp) == RET_ERROR)
+ return (RET_ERROR);
+
+ /* Free random memory. */
+ if (t->bt_cursor.key.data != NULL) {
+ free(t->bt_cursor.key.data);
+ t->bt_cursor.key.size = 0;
+ t->bt_cursor.key.data = NULL;
+ }
+ if (t->bt_rkey.data) {
+ free(t->bt_rkey.data);
+ t->bt_rkey.size = 0;
+ t->bt_rkey.data = NULL;
+ }
+ if (t->bt_rdata.data) {
+ free(t->bt_rdata.data);
+ t->bt_rdata.size = 0;
+ t->bt_rdata.data = NULL;
+ }
+
+ fd = t->bt_fd;
+ free(t);
+ free(dbp);
+ return (close(fd) ? RET_ERROR : RET_SUCCESS);
+}
+
+/*
+ * BT_SYNC -- sync the btree to disk.
+ *
+ * Parameters:
+ * dbp: pointer to access method
+ *
+ * Returns:
+ * RET_SUCCESS, RET_ERROR.
+ */
+int
+__bt_sync(dbp, flags)
+ const DB *dbp;
+ u_int flags;
+{
+ BTREE *t;
+ int status;
+
+ t = dbp->internal;
+
+ /* Toss any page pinned across calls. */
+ if (t->bt_pinned != NULL) {
+ mpool_put(t->bt_mp, t->bt_pinned, 0);
+ t->bt_pinned = NULL;
+ }
+
+ /* Sync doesn't currently take any flags. */
+ if (flags != 0) {
+ errno = EINVAL;
+ return (RET_ERROR);
+ }
+
+ if (F_ISSET(t, B_INMEM | B_RDONLY) || !F_ISSET(t, B_MODIFIED))
+ return (RET_SUCCESS);
+
+ if (F_ISSET(t, B_METADIRTY) && bt_meta(t) == RET_ERROR)
+ return (RET_ERROR);
+
+ if ((status = mpool_sync(t->bt_mp)) == RET_SUCCESS)
+ F_CLR(t, B_MODIFIED);
+
+ return (status);
+}
+
+/*
+ * BT_META -- write the tree meta data to disk.
+ *
+ * Parameters:
+ * t: tree
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS
+ */
+static int
+bt_meta(t)
+ BTREE *t;
+{
+ BTMETA m;
+ void *p;
+
+ if ((p = mpool_get(t->bt_mp, P_META, 0)) == NULL)
+ return (RET_ERROR);
+
+ /* Fill in metadata. */
+ m.magic = BTREEMAGIC;
+ m.version = BTREEVERSION;
+ m.psize = t->bt_psize;
+ m.free = t->bt_free;
+ m.nrecs = t->bt_nrecs;
+ m.flags = F_ISSET(t, SAVEMETA);
+
+ memmove(p, &m, sizeof(BTMETA));
+ mpool_put(t->bt_mp, p, MPOOL_DIRTY);
+ return (RET_SUCCESS);
+}
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Mike Olson.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)bt_conv.c 8.5 (Berkeley) 8/17/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+
+#include <stdio.h>
+
+#include <db.h>
+#include "btree.h"
+
+static void mswap __P((PAGE *));
+
+/*
+ * __BT_BPGIN, __BT_BPGOUT --
+ * Convert host-specific number layout to/from the host-independent
+ * format stored on disk.
+ *
+ * Parameters:
+ * t: tree
+ * pg: page number
+ * h: page to convert
+ */
+void
+__bt_pgin(t, pg, pp)
+ void *t;
+ pgno_t pg;
+ void *pp;
+{
+ PAGE *h;
+ indx_t i, top;
+ u_char flags;
+ char *p;
+
+ if (!F_ISSET(((BTREE *)t), B_NEEDSWAP))
+ return;
+ if (pg == P_META) {
+ mswap(pp);
+ return;
+ }
+
+ h = pp;
+ M_32_SWAP(h->pgno);
+ M_32_SWAP(h->prevpg);
+ M_32_SWAP(h->nextpg);
+ M_32_SWAP(h->flags);
+ M_16_SWAP(h->lower);
+ M_16_SWAP(h->upper);
+
+ top = NEXTINDEX(h);
+ if ((h->flags & P_TYPE) == P_BINTERNAL)
+ for (i = 0; i < top; i++) {
+ M_16_SWAP(h->linp[i]);
+ p = (char *)GETBINTERNAL(h, i);
+ P_32_SWAP(p);
+ p += sizeof(u_int32_t);
+ P_32_SWAP(p);
+ p += sizeof(pgno_t);
+ if (*(u_char *)p & P_BIGKEY) {
+ p += sizeof(u_char);
+ P_32_SWAP(p);
+ p += sizeof(pgno_t);
+ P_32_SWAP(p);
+ }
+ }
+ else if ((h->flags & P_TYPE) == P_BLEAF)
+ for (i = 0; i < top; i++) {
+ M_16_SWAP(h->linp[i]);
+ p = (char *)GETBLEAF(h, i);
+ P_32_SWAP(p);
+ p += sizeof(u_int32_t);
+ P_32_SWAP(p);
+ p += sizeof(u_int32_t);
+ flags = *(u_char *)p;
+ if (flags & (P_BIGKEY | P_BIGDATA)) {
+ p += sizeof(u_char);
+ if (flags & P_BIGKEY) {
+ P_32_SWAP(p);
+ p += sizeof(pgno_t);
+ P_32_SWAP(p);
+ }
+ if (flags & P_BIGDATA) {
+ p += sizeof(u_int32_t);
+ P_32_SWAP(p);
+ p += sizeof(pgno_t);
+ P_32_SWAP(p);
+ }
+ }
+ }
+}
+
+void
+__bt_pgout(t, pg, pp)
+ void *t;
+ pgno_t pg;
+ void *pp;
+{
+ PAGE *h;
+ indx_t i, top;
+ u_char flags;
+ char *p;
+
+ if (!F_ISSET(((BTREE *)t), B_NEEDSWAP))
+ return;
+ if (pg == P_META) {
+ mswap(pp);
+ return;
+ }
+
+ h = pp;
+ top = NEXTINDEX(h);
+ if ((h->flags & P_TYPE) == P_BINTERNAL)
+ for (i = 0; i < top; i++) {
+ p = (char *)GETBINTERNAL(h, i);
+ P_32_SWAP(p);
+ p += sizeof(u_int32_t);
+ P_32_SWAP(p);
+ p += sizeof(pgno_t);
+ if (*(u_char *)p & P_BIGKEY) {
+ p += sizeof(u_char);
+ P_32_SWAP(p);
+ p += sizeof(pgno_t);
+ P_32_SWAP(p);
+ }
+ M_16_SWAP(h->linp[i]);
+ }
+ else if ((h->flags & P_TYPE) == P_BLEAF)
+ for (i = 0; i < top; i++) {
+ p = (char *)GETBLEAF(h, i);
+ P_32_SWAP(p);
+ p += sizeof(u_int32_t);
+ P_32_SWAP(p);
+ p += sizeof(u_int32_t);
+ flags = *(u_char *)p;
+ if (flags & (P_BIGKEY | P_BIGDATA)) {
+ p += sizeof(u_char);
+ if (flags & P_BIGKEY) {
+ P_32_SWAP(p);
+ p += sizeof(pgno_t);
+ P_32_SWAP(p);
+ }
+ if (flags & P_BIGDATA) {
+ p += sizeof(u_int32_t);
+ P_32_SWAP(p);
+ p += sizeof(pgno_t);
+ P_32_SWAP(p);
+ }
+ }
+ M_16_SWAP(h->linp[i]);
+ }
+
+ M_32_SWAP(h->pgno);
+ M_32_SWAP(h->prevpg);
+ M_32_SWAP(h->nextpg);
+ M_32_SWAP(h->flags);
+ M_16_SWAP(h->lower);
+ M_16_SWAP(h->upper);
+}
+
+/*
+ * MSWAP -- Actually swap the bytes on the meta page.
+ *
+ * Parameters:
+ * p: page to convert
+ */
+static void
+mswap(pg)
+ PAGE *pg;
+{
+ char *p;
+
+ p = (char *)pg;
+ P_32_SWAP(p); /* magic */
+ p += sizeof(u_int32_t);
+ P_32_SWAP(p); /* version */
+ p += sizeof(u_int32_t);
+ P_32_SWAP(p); /* psize */
+ p += sizeof(u_int32_t);
+ P_32_SWAP(p); /* free */
+ p += sizeof(u_int32_t);
+ P_32_SWAP(p); /* nrecs */
+ p += sizeof(u_int32_t);
+ P_32_SWAP(p); /* flags */
+ p += sizeof(u_int32_t);
+}
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Mike Olson.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)bt_debug.c 8.5 (Berkeley) 8/17/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <db.h>
+#include "btree.h"
+
+#ifdef DEBUG
+/*
+ * BT_DUMP -- Dump the tree
+ *
+ * Parameters:
+ * dbp: pointer to the DB
+ */
+void
+__bt_dump(dbp)
+ DB *dbp;
+{
+ BTREE *t;
+ PAGE *h;
+ pgno_t i;
+ char *sep;
+
+ t = dbp->internal;
+ (void)fprintf(stderr, "%s: pgsz %d",
+ F_ISSET(t, B_INMEM) ? "memory" : "disk", t->bt_psize);
+ if (F_ISSET(t, R_RECNO))
+ (void)fprintf(stderr, " keys %lu", t->bt_nrecs);
+#undef X
+#define X(flag, name) \
+ if (F_ISSET(t, flag)) { \
+ (void)fprintf(stderr, "%s%s", sep, name); \
+ sep = ", "; \
+ }
+ if (t->flags != 0) {
+ sep = " flags (";
+ X(R_FIXLEN, "FIXLEN");
+ X(B_INMEM, "INMEM");
+ X(B_NODUPS, "NODUPS");
+ X(B_RDONLY, "RDONLY");
+ X(R_RECNO, "RECNO");
+ X(B_METADIRTY,"METADIRTY");
+ (void)fprintf(stderr, ")\n");
+ }
+#undef X
+
+ for (i = P_ROOT; (h = mpool_get(t->bt_mp, i, 0)) != NULL; ++i) {
+ __bt_dpage(h);
+ (void)mpool_put(t->bt_mp, h, 0);
+ }
+}
+
+/*
+ * BT_DMPAGE -- Dump the meta page
+ *
+ * Parameters:
+ * h: pointer to the PAGE
+ */
+void
+__bt_dmpage(h)
+ PAGE *h;
+{
+ BTMETA *m;
+ char *sep;
+
+ m = (BTMETA *)h;
+ (void)fprintf(stderr, "magic %lx\n", m->magic);
+ (void)fprintf(stderr, "version %lu\n", m->version);
+ (void)fprintf(stderr, "psize %lu\n", m->psize);
+ (void)fprintf(stderr, "free %lu\n", m->free);
+ (void)fprintf(stderr, "nrecs %lu\n", m->nrecs);
+ (void)fprintf(stderr, "flags %lu", m->flags);
+#undef X
+#define X(flag, name) \
+ if (m->flags & flag) { \
+ (void)fprintf(stderr, "%s%s", sep, name); \
+ sep = ", "; \
+ }
+ if (m->flags) {
+ sep = " (";
+ X(B_NODUPS, "NODUPS");
+ X(R_RECNO, "RECNO");
+ (void)fprintf(stderr, ")");
+ }
+}
+
+/*
+ * BT_DNPAGE -- Dump the page
+ *
+ * Parameters:
+ * n: page number to dump.
+ */
+void
+__bt_dnpage(dbp, pgno)
+ DB *dbp;
+ pgno_t pgno;
+{
+ BTREE *t;
+ PAGE *h;
+
+ t = dbp->internal;
+ if ((h = mpool_get(t->bt_mp, pgno, 0)) != NULL) {
+ __bt_dpage(h);
+ (void)mpool_put(t->bt_mp, h, 0);
+ }
+}
+
+/*
+ * BT_DPAGE -- Dump the page
+ *
+ * Parameters:
+ * h: pointer to the PAGE
+ */
+void
+__bt_dpage(h)
+ PAGE *h;
+{
+ BINTERNAL *bi;
+ BLEAF *bl;
+ RINTERNAL *ri;
+ RLEAF *rl;
+ indx_t cur, top;
+ char *sep;
+
+ (void)fprintf(stderr, " page %d: (", h->pgno);
+#undef X
+#define X(flag, name) \
+ if (h->flags & flag) { \
+ (void)fprintf(stderr, "%s%s", sep, name); \
+ sep = ", "; \
+ }
+ sep = "";
+ X(P_BINTERNAL, "BINTERNAL") /* types */
+ X(P_BLEAF, "BLEAF")
+ X(P_RINTERNAL, "RINTERNAL") /* types */
+ X(P_RLEAF, "RLEAF")
+ X(P_OVERFLOW, "OVERFLOW")
+ X(P_PRESERVE, "PRESERVE");
+ (void)fprintf(stderr, ")\n");
+#undef X
+
+ (void)fprintf(stderr, "\tprev %2d next %2d", h->prevpg, h->nextpg);
+ if (h->flags & P_OVERFLOW)
+ return;
+
+ top = NEXTINDEX(h);
+ (void)fprintf(stderr, " lower %3d upper %3d nextind %d\n",
+ h->lower, h->upper, top);
+ for (cur = 0; cur < top; cur++) {
+ (void)fprintf(stderr, "\t[%03d] %4d ", cur, h->linp[cur]);
+ switch (h->flags & P_TYPE) {
+ case P_BINTERNAL:
+ bi = GETBINTERNAL(h, cur);
+ (void)fprintf(stderr,
+ "size %03d pgno %03d", bi->ksize, bi->pgno);
+ if (bi->flags & P_BIGKEY)
+ (void)fprintf(stderr, " (indirect)");
+ else if (bi->ksize)
+ (void)fprintf(stderr,
+ " {%.*s}", (int)bi->ksize, bi->bytes);
+ break;
+ case P_RINTERNAL:
+ ri = GETRINTERNAL(h, cur);
+ (void)fprintf(stderr, "entries %03d pgno %03d",
+ ri->nrecs, ri->pgno);
+ break;
+ case P_BLEAF:
+ bl = GETBLEAF(h, cur);
+ if (bl->flags & P_BIGKEY)
+ (void)fprintf(stderr,
+ "big key page %lu size %u/",
+ *(pgno_t *)bl->bytes,
+ *(u_int32_t *)(bl->bytes + sizeof(pgno_t)));
+ else if (bl->ksize)
+ (void)fprintf(stderr, "%s/", bl->bytes);
+ if (bl->flags & P_BIGDATA)
+ (void)fprintf(stderr,
+ "big data page %lu size %u",
+ *(pgno_t *)(bl->bytes + bl->ksize),
+ *(u_int32_t *)(bl->bytes + bl->ksize +
+ sizeof(pgno_t)));
+ else if (bl->dsize)
+ (void)fprintf(stderr, "%.*s",
+ (int)bl->dsize, bl->bytes + bl->ksize);
+ break;
+ case P_RLEAF:
+ rl = GETRLEAF(h, cur);
+ if (rl->flags & P_BIGDATA)
+ (void)fprintf(stderr,
+ "big data page %lu size %u",
+ *(pgno_t *)rl->bytes,
+ *(u_int32_t *)(rl->bytes + sizeof(pgno_t)));
+ else if (rl->dsize)
+ (void)fprintf(stderr,
+ "%.*s", (int)rl->dsize, rl->bytes);
+ break;
+ }
+ (void)fprintf(stderr, "\n");
+ }
+}
+#endif
+
+#ifdef STATISTICS
+/*
+ * BT_STAT -- Gather/print the tree statistics
+ *
+ * Parameters:
+ * dbp: pointer to the DB
+ */
+void
+__bt_stat(dbp)
+ DB *dbp;
+{
+ extern u_long bt_cache_hit, bt_cache_miss, bt_pfxsaved, bt_rootsplit;
+ extern u_long bt_sortsplit, bt_split;
+ BTREE *t;
+ PAGE *h;
+ pgno_t i, pcont, pinternal, pleaf;
+ u_long ifree, lfree, nkeys;
+ int levels;
+
+ t = dbp->internal;
+ pcont = pinternal = pleaf = 0;
+ nkeys = ifree = lfree = 0;
+ for (i = P_ROOT; (h = mpool_get(t->bt_mp, i, 0)) != NULL; ++i) {
+ switch (h->flags & P_TYPE) {
+ case P_BINTERNAL:
+ case P_RINTERNAL:
+ ++pinternal;
+ ifree += h->upper - h->lower;
+ break;
+ case P_BLEAF:
+ case P_RLEAF:
+ ++pleaf;
+ lfree += h->upper - h->lower;
+ nkeys += NEXTINDEX(h);
+ break;
+ case P_OVERFLOW:
+ ++pcont;
+ break;
+ }
+ (void)mpool_put(t->bt_mp, h, 0);
+ }
+
+ /* Count the levels of the tree. */
+ for (i = P_ROOT, levels = 0 ;; ++levels) {
+ h = mpool_get(t->bt_mp, i, 0);
+ if (h->flags & (P_BLEAF|P_RLEAF)) {
+ if (levels == 0)
+ levels = 1;
+ (void)mpool_put(t->bt_mp, h, 0);
+ break;
+ }
+ i = F_ISSET(t, R_RECNO) ?
+ GETRINTERNAL(h, 0)->pgno :
+ GETBINTERNAL(h, 0)->pgno;
+ (void)mpool_put(t->bt_mp, h, 0);
+ }
+
+ (void)fprintf(stderr, "%d level%s with %ld keys",
+ levels, levels == 1 ? "" : "s", nkeys);
+ if (F_ISSET(t, R_RECNO))
+ (void)fprintf(stderr, " (%ld header count)", t->bt_nrecs);
+ (void)fprintf(stderr,
+ "\n%lu pages (leaf %ld, internal %ld, overflow %ld)\n",
+ pinternal + pleaf + pcont, pleaf, pinternal, pcont);
+ (void)fprintf(stderr, "%ld cache hits, %ld cache misses\n",
+ bt_cache_hit, bt_cache_miss);
+ (void)fprintf(stderr, "%ld splits (%ld root splits, %ld sort splits)\n",
+ bt_split, bt_rootsplit, bt_sortsplit);
+ pleaf *= t->bt_psize - BTDATAOFF;
+ if (pleaf)
+ (void)fprintf(stderr,
+ "%.0f%% leaf fill (%ld bytes used, %ld bytes free)\n",
+ ((double)(pleaf - lfree) / pleaf) * 100,
+ pleaf - lfree, lfree);
+ pinternal *= t->bt_psize - BTDATAOFF;
+ if (pinternal)
+ (void)fprintf(stderr,
+ "%.0f%% internal fill (%ld bytes used, %ld bytes free\n",
+ ((double)(pinternal - ifree) / pinternal) * 100,
+ pinternal - ifree, ifree);
+ if (bt_pfxsaved)
+ (void)fprintf(stderr, "prefix checking removed %lu bytes.\n",
+ bt_pfxsaved);
+}
+#endif
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Mike Olson.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)bt_delete.c 8.13 (Berkeley) 7/28/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <db.h>
+#include "btree.h"
+
+static int __bt_bdelete __P((BTREE *, const DBT *));
+static int __bt_curdel __P((BTREE *, const DBT *, PAGE *, u_int));
+static int __bt_pdelete __P((BTREE *, PAGE *));
+static int __bt_relink __P((BTREE *, PAGE *));
+static int __bt_stkacq __P((BTREE *, PAGE **, CURSOR *));
+
+/*
+ * __bt_delete
+ * Delete the item(s) referenced by a key.
+ *
+ * Return RET_SPECIAL if the key is not found.
+ */
+int
+__bt_delete(dbp, key, flags)
+ const DB *dbp;
+ const DBT *key;
+ u_int flags;
+{
+ BTREE *t;
+ CURSOR *c;
+ PAGE *h;
+ int status;
+
+ t = dbp->internal;
+
+ /* Toss any page pinned across calls. */
+ if (t->bt_pinned != NULL) {
+ mpool_put(t->bt_mp, t->bt_pinned, 0);
+ t->bt_pinned = NULL;
+ }
+
+ /* Check for change to a read-only tree. */
+ if (F_ISSET(t, B_RDONLY)) {
+ errno = EPERM;
+ return (RET_ERROR);
+ }
+
+ switch (flags) {
+ case 0:
+ status = __bt_bdelete(t, key);
+ break;
+ case R_CURSOR:
+ /*
+ * If flags is R_CURSOR, delete the cursor. Must already
+ * have started a scan and not have already deleted it.
+ */
+ c = &t->bt_cursor;
+ if (F_ISSET(c, CURS_INIT)) {
+ if (F_ISSET(c, CURS_ACQUIRE | CURS_AFTER | CURS_BEFORE))
+ return (RET_SPECIAL);
+ if ((h = mpool_get(t->bt_mp, c->pg.pgno, 0)) == NULL)
+ return (RET_ERROR);
+
+ /*
+ * If the page is about to be emptied, we'll need to
+ * delete it, which means we have to acquire a stack.
+ */
+ if (NEXTINDEX(h) == 1)
+ if (__bt_stkacq(t, &h, &t->bt_cursor))
+ return (RET_ERROR);
+
+ status = __bt_dleaf(t, NULL, h, c->pg.index);
+
+ if (NEXTINDEX(h) == 0 && status == RET_SUCCESS) {
+ if (__bt_pdelete(t, h))
+ return (RET_ERROR);
+ } else
+ mpool_put(t->bt_mp,
+ h, status == RET_SUCCESS ? MPOOL_DIRTY : 0);
+ break;
+ }
+ /* FALLTHROUGH */
+ default:
+ errno = EINVAL;
+ return (RET_ERROR);
+ }
+ if (status == RET_SUCCESS)
+ F_SET(t, B_MODIFIED);
+ return (status);
+}
+
+/*
+ * __bt_stkacq --
+ * Acquire a stack so we can delete a cursor entry.
+ *
+ * Parameters:
+ * t: tree
+ * hp: pointer to current, pinned PAGE pointer
+ * c: pointer to the cursor
+ *
+ * Returns:
+ * 0 on success, 1 on failure
+ */
+static int
+__bt_stkacq(t, hp, c)
+ BTREE *t;
+ PAGE **hp;
+ CURSOR *c;
+{
+ BINTERNAL *bi;
+ EPG *e;
+ EPGNO *parent;
+ PAGE *h;
+ indx_t index;
+ pgno_t pgno;
+ recno_t nextpg, prevpg;
+ int exact, level;
+
+ /*
+ * Find the first occurrence of the key in the tree. Toss the
+ * currently locked page so we don't hit an already-locked page.
+ */
+ h = *hp;
+ mpool_put(t->bt_mp, h, 0);
+ if ((e = __bt_search(t, &c->key, &exact)) == NULL)
+ return (1);
+ h = e->page;
+
+ /* See if we got it in one shot. */
+ if (h->pgno == c->pg.pgno)
+ goto ret;
+
+ /*
+ * Move right, looking for the page. At each move we have to move
+ * up the stack until we don't have to move to the next page. If
+ * we have to change pages at an internal level, we have to fix the
+ * stack back up.
+ */
+ while (h->pgno != c->pg.pgno) {
+ if ((nextpg = h->nextpg) == P_INVALID)
+ break;
+ mpool_put(t->bt_mp, h, 0);
+
+ /* Move up the stack. */
+ for (level = 0; (parent = BT_POP(t)) != NULL; ++level) {
+ /* Get the parent page. */
+ if ((h = mpool_get(t->bt_mp, parent->pgno, 0)) == NULL)
+ return (1);
+
+ /* Move to the next index. */
+ if (parent->index != NEXTINDEX(h) - 1) {
+ index = parent->index + 1;
+ BT_PUSH(t, h->pgno, index);
+ break;
+ }
+ mpool_put(t->bt_mp, h, 0);
+ }
+
+ /* Restore the stack. */
+ while (level--) {
+ /* Push the next level down onto the stack. */
+ bi = GETBINTERNAL(h, index);
+ pgno = bi->pgno;
+ BT_PUSH(t, pgno, 0);
+
+ /* Lose the currently pinned page. */
+ mpool_put(t->bt_mp, h, 0);
+
+ /* Get the next level down. */
+ if ((h = mpool_get(t->bt_mp, pgno, 0)) == NULL)
+ return (1);
+ index = 0;
+ }
+ mpool_put(t->bt_mp, h, 0);
+ if ((h = mpool_get(t->bt_mp, nextpg, 0)) == NULL)
+ return (1);
+ }
+
+ if (h->pgno == c->pg.pgno)
+ goto ret;
+
+ /* Reacquire the original stack. */
+ mpool_put(t->bt_mp, h, 0);
+ if ((e = __bt_search(t, &c->key, &exact)) == NULL)
+ return (1);
+ h = e->page;
+
+ /*
+ * Move left, looking for the page. At each move we have to move
+ * up the stack until we don't have to change pages to move to the
+ * next page. If we have to change pages at an internal level, we
+ * have to fix the stack back up.
+ */
+ while (h->pgno != c->pg.pgno) {
+ if ((prevpg = h->prevpg) == P_INVALID)
+ break;
+ mpool_put(t->bt_mp, h, 0);
+
+ /* Move up the stack. */
+ for (level = 0; (parent = BT_POP(t)) != NULL; ++level) {
+ /* Get the parent page. */
+ if ((h = mpool_get(t->bt_mp, parent->pgno, 0)) == NULL)
+ return (1);
+
+ /* Move to the next index. */
+ if (parent->index != 0) {
+ index = parent->index - 1;
+ BT_PUSH(t, h->pgno, index);
+ break;
+ }
+ mpool_put(t->bt_mp, h, 0);
+ }
+
+ /* Restore the stack. */
+ while (level--) {
+ /* Push the next level down onto the stack. */
+ bi = GETBINTERNAL(h, index);
+ pgno = bi->pgno;
+
+ /* Lose the currently pinned page. */
+ mpool_put(t->bt_mp, h, 0);
+
+ /* Get the next level down. */
+ if ((h = mpool_get(t->bt_mp, pgno, 0)) == NULL)
+ return (1);
+
+ index = NEXTINDEX(h) - 1;
+ BT_PUSH(t, pgno, index);
+ }
+ mpool_put(t->bt_mp, h, 0);
+ if ((h = mpool_get(t->bt_mp, prevpg, 0)) == NULL)
+ return (1);
+ }
+
+
+ret: mpool_put(t->bt_mp, h, 0);
+ return ((*hp = mpool_get(t->bt_mp, c->pg.pgno, 0)) == NULL);
+}
+
+/*
+ * __bt_bdelete --
+ * Delete all key/data pairs matching the specified key.
+ *
+ * Parameters:
+ * t: tree
+ * key: key to delete
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS and RET_SPECIAL if the key not found.
+ */
+static int
+__bt_bdelete(t, key)
+ BTREE *t;
+ const DBT *key;
+{
+ EPG *e;
+ PAGE *h;
+ int deleted, exact, redo;
+
+ deleted = 0;
+
+ /* Find any matching record; __bt_search pins the page. */
+loop: if ((e = __bt_search(t, key, &exact)) == NULL)
+ return (deleted ? RET_SUCCESS : RET_ERROR);
+ if (!exact) {
+ mpool_put(t->bt_mp, e->page, 0);
+ return (deleted ? RET_SUCCESS : RET_SPECIAL);
+ }
+
+ /*
+ * Delete forward, then delete backward, from the found key. If
+ * there are duplicates and we reach either side of the page, do
+ * the key search again, so that we get them all.
+ */
+ redo = 0;
+ h = e->page;
+ do {
+ if (__bt_dleaf(t, key, h, e->index)) {
+ mpool_put(t->bt_mp, h, 0);
+ return (RET_ERROR);
+ }
+ if (F_ISSET(t, B_NODUPS)) {
+ if (NEXTINDEX(h) == 0) {
+ if (__bt_pdelete(t, h))
+ return (RET_ERROR);
+ } else
+ mpool_put(t->bt_mp, h, MPOOL_DIRTY);
+ return (RET_SUCCESS);
+ }
+ deleted = 1;
+ } while (e->index < NEXTINDEX(h) && __bt_cmp(t, key, e) == 0);
+
+ /* Check for right-hand edge of the page. */
+ if (e->index == NEXTINDEX(h))
+ redo = 1;
+
+ /* Delete from the key to the beginning of the page. */
+ while (e->index-- > 0) {
+ if (__bt_cmp(t, key, e) != 0)
+ break;
+ if (__bt_dleaf(t, key, h, e->index) == RET_ERROR) {
+ mpool_put(t->bt_mp, h, 0);
+ return (RET_ERROR);
+ }
+ if (e->index == 0)
+ redo = 1;
+ }
+
+ /* Check for an empty page. */
+ if (NEXTINDEX(h) == 0) {
+ if (__bt_pdelete(t, h))
+ return (RET_ERROR);
+ goto loop;
+ }
+
+ /* Put the page. */
+ mpool_put(t->bt_mp, h, MPOOL_DIRTY);
+
+ if (redo)
+ goto loop;
+ return (RET_SUCCESS);
+}
+
+/*
+ * __bt_pdelete --
+ * Delete a single page from the tree.
+ *
+ * Parameters:
+ * t: tree
+ * h: leaf page
+ *
+ * Returns:
+ * RET_SUCCESS, RET_ERROR.
+ *
+ * Side-effects:
+ * mpool_put's the page
+ */
+static int
+__bt_pdelete(t, h)
+ BTREE *t;
+ PAGE *h;
+{
+ BINTERNAL *bi;
+ PAGE *pg;
+ EPGNO *parent;
+ indx_t cnt, index, *ip, offset;
+ u_int32_t nksize;
+ char *from;
+
+ /*
+ * Walk the parent page stack -- a LIFO stack of the pages that were
+ * traversed when we searched for the page where the delete occurred.
+ * Each stack entry is a page number and a page index offset. The
+ * offset is for the page traversed on the search. We've just deleted
+ * a page, so we have to delete the key from the parent page.
+ *
+ * If the delete from the parent page makes it empty, this process may
+ * continue all the way up the tree. We stop if we reach the root page
+ * (which is never deleted, it's just not worth the effort) or if the
+ * delete does not empty the page.
+ */
+ while ((parent = BT_POP(t)) != NULL) {
+ /* Get the parent page. */
+ if ((pg = mpool_get(t->bt_mp, parent->pgno, 0)) == NULL)
+ return (RET_ERROR);
+
+ index = parent->index;
+ bi = GETBINTERNAL(pg, index);
+
+ /* Free any overflow pages. */
+ if (bi->flags & P_BIGKEY &&
+ __ovfl_delete(t, bi->bytes) == RET_ERROR) {
+ mpool_put(t->bt_mp, pg, 0);
+ return (RET_ERROR);
+ }
+
+ /*
+ * Free the parent if it has only the one key and it's not the
+ * root page. If it's the rootpage, turn it back into an empty
+ * leaf page.
+ */
+ if (NEXTINDEX(pg) == 1)
+ if (pg->pgno == P_ROOT) {
+ pg->lower = BTDATAOFF;
+ pg->upper = t->bt_psize;
+ pg->flags = P_BLEAF;
+ } else {
+ if (__bt_relink(t, pg) || __bt_free(t, pg))
+ return (RET_ERROR);
+ continue;
+ }
+ else {
+ /* Pack remaining key items at the end of the page. */
+ nksize = NBINTERNAL(bi->ksize);
+ from = (char *)pg + pg->upper;
+ memmove(from + nksize, from, (char *)bi - from);
+ pg->upper += nksize;
+
+ /* Adjust indices' offsets, shift the indices down. */
+ offset = pg->linp[index];
+ for (cnt = index, ip = &pg->linp[0]; cnt--; ++ip)
+ if (ip[0] < offset)
+ ip[0] += nksize;
+ for (cnt = NEXTINDEX(pg) - index; --cnt; ++ip)
+ ip[0] = ip[1] < offset ? ip[1] + nksize : ip[1];
+ pg->lower -= sizeof(indx_t);
+ }
+
+ mpool_put(t->bt_mp, pg, MPOOL_DIRTY);
+ break;
+ }
+
+ /* Free the leaf page, as long as it wasn't the root. */
+ if (h->pgno == P_ROOT) {
+ mpool_put(t->bt_mp, h, MPOOL_DIRTY);
+ return (RET_SUCCESS);
+ }
+ return (__bt_relink(t, h) || __bt_free(t, h));
+}
+
+/*
+ * __bt_dleaf --
+ * Delete a single record from a leaf page.
+ *
+ * Parameters:
+ * t: tree
+ * key: referenced key
+ * h: page
+ * index: index on page to delete
+ *
+ * Returns:
+ * RET_SUCCESS, RET_ERROR.
+ */
+int
+__bt_dleaf(t, key, h, index)
+ BTREE *t;
+ const DBT *key;
+ PAGE *h;
+ u_int index;
+{
+ BLEAF *bl;
+ indx_t cnt, *ip, offset;
+ u_int32_t nbytes;
+ void *to;
+ char *from;
+
+ /* If this record is referenced by the cursor, delete the cursor. */
+ if (F_ISSET(&t->bt_cursor, CURS_INIT) &&
+ !F_ISSET(&t->bt_cursor, CURS_ACQUIRE) &&
+ t->bt_cursor.pg.pgno == h->pgno && t->bt_cursor.pg.index == index &&
+ __bt_curdel(t, key, h, index))
+ return (RET_ERROR);
+
+ /* If the entry uses overflow pages, make them available for reuse. */
+ to = bl = GETBLEAF(h, index);
+ if (bl->flags & P_BIGKEY && __ovfl_delete(t, bl->bytes) == RET_ERROR)
+ return (RET_ERROR);
+ if (bl->flags & P_BIGDATA &&
+ __ovfl_delete(t, bl->bytes + bl->ksize) == RET_ERROR)
+ return (RET_ERROR);
+
+ /* Pack the remaining key/data items at the end of the page. */
+ nbytes = NBLEAF(bl);
+ from = (char *)h + h->upper;
+ memmove(from + nbytes, from, (char *)to - from);
+ h->upper += nbytes;
+
+ /* Adjust the indices' offsets, shift the indices down. */
+ offset = h->linp[index];
+ for (cnt = index, ip = &h->linp[0]; cnt--; ++ip)
+ if (ip[0] < offset)
+ ip[0] += nbytes;
+ for (cnt = NEXTINDEX(h) - index; --cnt; ++ip)
+ ip[0] = ip[1] < offset ? ip[1] + nbytes : ip[1];
+ h->lower -= sizeof(indx_t);
+
+ /* If the cursor is on this page, adjust it as necessary. */
+ if (F_ISSET(&t->bt_cursor, CURS_INIT) &&
+ !F_ISSET(&t->bt_cursor, CURS_ACQUIRE) &&
+ t->bt_cursor.pg.pgno == h->pgno && t->bt_cursor.pg.index > index)
+ --t->bt_cursor.pg.index;
+
+ return (RET_SUCCESS);
+}
+
+/*
+ * __bt_curdel --
+ * Delete the cursor.
+ *
+ * Parameters:
+ * t: tree
+ * key: referenced key (or NULL)
+ * h: page
+ * index: index on page to delete
+ *
+ * Returns:
+ * RET_SUCCESS, RET_ERROR.
+ */
+static int
+__bt_curdel(t, key, h, index)
+ BTREE *t;
+ const DBT *key;
+ PAGE *h;
+ u_int index;
+{
+ CURSOR *c;
+ EPG e;
+ PAGE *pg;
+ int curcopy, status;
+
+ /*
+ * If there are duplicates, move forward or backward to one.
+ * Otherwise, copy the key into the cursor area.
+ */
+ c = &t->bt_cursor;
+ F_CLR(c, CURS_AFTER | CURS_BEFORE | CURS_ACQUIRE);
+
+ curcopy = 0;
+ if (!F_ISSET(t, B_NODUPS)) {
+ /*
+ * We're going to have to do comparisons. If we weren't
+ * provided a copy of the key, i.e. the user is deleting
+ * the current cursor position, get one.
+ */
+ if (key == NULL) {
+ e.page = h;
+ e.index = index;
+ if ((status = __bt_ret(t, &e,
+ &c->key, &c->key, NULL, NULL, 1)) != RET_SUCCESS)
+ return (status);
+ curcopy = 1;
+ key = &c->key;
+ }
+ /* Check previous key, if not at the beginning of the page. */
+ if (index > 0) {
+ e.page = h;
+ e.index = index - 1;
+ if (__bt_cmp(t, key, &e) == 0) {
+ F_SET(c, CURS_BEFORE);
+ goto dup2;
+ }
+ }
+ /* Check next key, if not at the end of the page. */
+ if (index < NEXTINDEX(h) - 1) {
+ e.page = h;
+ e.index = index + 1;
+ if (__bt_cmp(t, key, &e) == 0) {
+ F_SET(c, CURS_AFTER);
+ goto dup2;
+ }
+ }
+ /* Check previous key if at the beginning of the page. */
+ if (index == 0 && h->prevpg != P_INVALID) {
+ if ((pg = mpool_get(t->bt_mp, h->prevpg, 0)) == NULL)
+ return (RET_ERROR);
+ e.page = pg;
+ e.index = NEXTINDEX(pg) - 1;
+ if (__bt_cmp(t, key, &e) == 0) {
+ F_SET(c, CURS_BEFORE);
+ goto dup1;
+ }
+ mpool_put(t->bt_mp, pg, 0);
+ }
+ /* Check next key if at the end of the page. */
+ if (index == NEXTINDEX(h) - 1 && h->nextpg != P_INVALID) {
+ if ((pg = mpool_get(t->bt_mp, h->nextpg, 0)) == NULL)
+ return (RET_ERROR);
+ e.page = pg;
+ e.index = 0;
+ if (__bt_cmp(t, key, &e) == 0) {
+ F_SET(c, CURS_AFTER);
+dup1: mpool_put(t->bt_mp, pg, 0);
+dup2: c->pg.pgno = e.page->pgno;
+ c->pg.index = e.index;
+ return (RET_SUCCESS);
+ }
+ mpool_put(t->bt_mp, pg, 0);
+ }
+ }
+ e.page = h;
+ e.index = index;
+ if (curcopy || (status =
+ __bt_ret(t, &e, &c->key, &c->key, NULL, NULL, 1)) == RET_SUCCESS) {
+ F_SET(c, CURS_ACQUIRE);
+ return (RET_SUCCESS);
+ }
+ return (status);
+}
+
+/*
+ * __bt_relink --
+ * Link around a deleted page.
+ *
+ * Parameters:
+ * t: tree
+ * h: page to be deleted
+ */
+static int
+__bt_relink(t, h)
+ BTREE *t;
+ PAGE *h;
+{
+ PAGE *pg;
+
+ if (h->nextpg != P_INVALID) {
+ if ((pg = mpool_get(t->bt_mp, h->nextpg, 0)) == NULL)
+ return (RET_ERROR);
+ pg->prevpg = h->prevpg;
+ mpool_put(t->bt_mp, pg, MPOOL_DIRTY);
+ }
+ if (h->prevpg != P_INVALID) {
+ if ((pg = mpool_get(t->bt_mp, h->prevpg, 0)) == NULL)
+ return (RET_ERROR);
+ pg->nextpg = h->nextpg;
+ mpool_put(t->bt_mp, pg, MPOOL_DIRTY);
+ }
+ return (0);
+}
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Mike Olson.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)bt_get.c 8.6 (Berkeley) 7/20/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <stddef.h>
+#include <stdio.h>
+
+#include <db.h>
+#include "btree.h"
+
+/*
+ * __BT_GET -- Get a record from the btree.
+ *
+ * Parameters:
+ * dbp: pointer to access method
+ * key: key to find
+ * data: data to return
+ * flag: currently unused
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS and RET_SPECIAL if the key not found.
+ */
+int
+__bt_get(dbp, key, data, flags)
+ const DB *dbp;
+ const DBT *key;
+ DBT *data;
+ u_int flags;
+{
+ BTREE *t;
+ EPG *e;
+ int exact, status;
+
+ t = dbp->internal;
+
+ /* Toss any page pinned across calls. */
+ if (t->bt_pinned != NULL) {
+ mpool_put(t->bt_mp, t->bt_pinned, 0);
+ t->bt_pinned = NULL;
+ }
+
+ /* Get currently doesn't take any flags. */
+ if (flags) {
+ errno = EINVAL;
+ return (RET_ERROR);
+ }
+
+ if ((e = __bt_search(t, key, &exact)) == NULL)
+ return (RET_ERROR);
+ if (!exact) {
+ mpool_put(t->bt_mp, e->page, 0);
+ return (RET_SPECIAL);
+ }
+
+ status = __bt_ret(t, e, NULL, NULL, data, &t->bt_rdata, 0);
+
+ /*
+ * If the user is doing concurrent access, we copied the
+ * key/data, toss the page.
+ */
+ if (F_ISSET(t, B_DB_LOCK))
+ mpool_put(t->bt_mp, e->page, 0);
+ else
+ t->bt_pinned = e->page;
+ return (status);
+}
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Mike Olson.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)bt_open.c 8.10 (Berkeley) 8/17/94";
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * Implementation of btree access method for 4.4BSD.
+ *
+ * The design here was originally based on that of the btree access method
+ * used in the Postgres database system at UC Berkeley. This implementation
+ * is wholly independent of the Postgres code.
+ */
+
+#include <sys/param.h>
+#include <sys/stat.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <db.h>
+#include "btree.h"
+
+#ifdef DEBUG
+#undef MINPSIZE
+#define MINPSIZE 128
+#endif
+
+static int byteorder __P((void));
+static int nroot __P((BTREE *));
+static int tmp __P((void));
+
+/*
+ * __BT_OPEN -- Open a btree.
+ *
+ * Creates and fills a DB struct, and calls the routine that actually
+ * opens the btree.
+ *
+ * Parameters:
+ * fname: filename (NULL for in-memory trees)
+ * flags: open flag bits
+ * mode: open permission bits
+ * b: BTREEINFO pointer
+ *
+ * Returns:
+ * NULL on failure, pointer to DB on success.
+ *
+ */
+DB *
+__bt_open(fname, flags, mode, openinfo, dflags)
+ const char *fname;
+ int flags, mode, dflags;
+ const BTREEINFO *openinfo;
+{
+ struct stat sb;
+ BTMETA m;
+ BTREE *t;
+ BTREEINFO b;
+ DB *dbp;
+ pgno_t ncache;
+ ssize_t nr;
+ int machine_lorder;
+
+ t = NULL;
+
+ /*
+ * Intention is to make sure all of the user's selections are okay
+ * here and then use them without checking. Can't be complete, since
+ * we don't know the right page size, lorder or flags until the backing
+ * file is opened. Also, the file's page size can cause the cachesize
+ * to change.
+ */
+ machine_lorder = byteorder();
+ if (openinfo) {
+ b = *openinfo;
+
+ /* Flags: R_DUP. */
+ if (b.flags & ~(R_DUP))
+ goto einval;
+
+ /*
+ * Page size must be indx_t aligned and >= MINPSIZE. Default
+ * page size is set farther on, based on the underlying file
+ * transfer size.
+ */
+ if (b.psize &&
+ (b.psize < MINPSIZE || b.psize > MAX_PAGE_OFFSET + 1 ||
+ b.psize & sizeof(indx_t) - 1))
+ goto einval;
+
+ /* Minimum number of keys per page; absolute minimum is 2. */
+ if (b.minkeypage) {
+ if (b.minkeypage < 2)
+ goto einval;
+ } else
+ b.minkeypage = DEFMINKEYPAGE;
+
+ /* If no comparison, use default comparison and prefix. */
+ if (b.compare == NULL) {
+ b.compare = __bt_defcmp;
+ if (b.prefix == NULL)
+ b.prefix = __bt_defpfx;
+ }
+
+ if (b.lorder == 0)
+ b.lorder = machine_lorder;
+ } else {
+ b.compare = __bt_defcmp;
+ b.cachesize = 0;
+ b.flags = 0;
+ b.lorder = machine_lorder;
+ b.minkeypage = DEFMINKEYPAGE;
+ b.prefix = __bt_defpfx;
+ b.psize = 0;
+ }
+
+ /* Check for the ubiquitous PDP-11. */
+ if (b.lorder != BIG_ENDIAN && b.lorder != LITTLE_ENDIAN)
+ goto einval;
+
+ /* Allocate and initialize DB and BTREE structures. */
+ if ((t = (BTREE *)malloc(sizeof(BTREE))) == NULL)
+ goto err;
+ memset(t, 0, sizeof(BTREE));
+ t->bt_fd = -1; /* Don't close unopened fd on error. */
+ t->bt_lorder = b.lorder;
+ t->bt_order = NOT;
+ t->bt_cmp = b.compare;
+ t->bt_pfx = b.prefix;
+ t->bt_rfd = -1;
+
+ if ((t->bt_dbp = dbp = (DB *)malloc(sizeof(DB))) == NULL)
+ goto err;
+ memset(t->bt_dbp, 0, sizeof(DB));
+ if (t->bt_lorder != machine_lorder)
+ F_SET(t, B_NEEDSWAP);
+
+ dbp->type = DB_BTREE;
+ dbp->internal = t;
+ dbp->close = __bt_close;
+ dbp->del = __bt_delete;
+ dbp->fd = __bt_fd;
+ dbp->get = __bt_get;
+ dbp->put = __bt_put;
+ dbp->seq = __bt_seq;
+ dbp->sync = __bt_sync;
+
+ /*
+ * If no file name was supplied, this is an in-memory btree and we
+ * open a backing temporary file. Otherwise, it's a disk-based tree.
+ */
+ if (fname) {
+ switch (flags & O_ACCMODE) {
+ case O_RDONLY:
+ F_SET(t, B_RDONLY);
+ break;
+ case O_RDWR:
+ break;
+ case O_WRONLY:
+ default:
+ goto einval;
+ }
+
+ if ((t->bt_fd = open(fname, flags, mode)) < 0)
+ goto err;
+
+ } else {
+ if ((flags & O_ACCMODE) != O_RDWR)
+ goto einval;
+ if ((t->bt_fd = tmp()) == -1)
+ goto err;
+ F_SET(t, B_INMEM);
+ }
+
+ if (fcntl(t->bt_fd, F_SETFD, 1) == -1)
+ goto err;
+
+ if (fstat(t->bt_fd, &sb))
+ goto err;
+ if (sb.st_size) {
+ if ((nr = read(t->bt_fd, &m, sizeof(BTMETA))) < 0)
+ goto err;
+ if (nr != sizeof(BTMETA))
+ goto eftype;
+
+ /*
+ * Read in the meta-data. This can change the notion of what
+ * the lorder, page size and flags are, and, when the page size
+ * changes, the cachesize value can change too. If the user
+ * specified the wrong byte order for an existing database, we
+ * don't bother to return an error, we just clear the NEEDSWAP
+ * bit.
+ */
+ if (m.magic == BTREEMAGIC)
+ F_CLR(t, B_NEEDSWAP);
+ else {
+ F_SET(t, B_NEEDSWAP);
+ M_32_SWAP(m.magic);
+ M_32_SWAP(m.version);
+ M_32_SWAP(m.psize);
+ M_32_SWAP(m.free);
+ M_32_SWAP(m.nrecs);
+ M_32_SWAP(m.flags);
+ }
+ if (m.magic != BTREEMAGIC || m.version != BTREEVERSION)
+ goto eftype;
+ if (m.psize < MINPSIZE || m.psize > MAX_PAGE_OFFSET + 1 ||
+ m.psize & sizeof(indx_t) - 1)
+ goto eftype;
+ if (m.flags & ~SAVEMETA)
+ goto eftype;
+ b.psize = m.psize;
+ F_SET(t, m.flags);
+ t->bt_free = m.free;
+ t->bt_nrecs = m.nrecs;
+ } else {
+ /*
+ * Set the page size to the best value for I/O to this file.
+ * Don't overflow the page offset type.
+ */
+ if (b.psize == 0) {
+ b.psize = sb.st_blksize;
+ if (b.psize < MINPSIZE)
+ b.psize = MINPSIZE;
+ if (b.psize > MAX_PAGE_OFFSET + 1)
+ b.psize = MAX_PAGE_OFFSET + 1;
+ }
+
+ /* Set flag if duplicates permitted. */
+ if (!(b.flags & R_DUP))
+ F_SET(t, B_NODUPS);
+
+ t->bt_free = P_INVALID;
+ t->bt_nrecs = 0;
+ F_SET(t, B_METADIRTY);
+ }
+
+ t->bt_psize = b.psize;
+
+ /* Set the cache size; must be a multiple of the page size. */
+ if (b.cachesize && b.cachesize & b.psize - 1)
+ b.cachesize += (~b.cachesize & b.psize - 1) + 1;
+ if (b.cachesize < b.psize * MINCACHE)
+ b.cachesize = b.psize * MINCACHE;
+
+ /* Calculate number of pages to cache. */
+ ncache = (b.cachesize + t->bt_psize - 1) / t->bt_psize;
+
+ /*
+ * The btree data structure requires that at least two keys can fit on
+ * a page, but other than that there's no fixed requirement. The user
+ * specified a minimum number per page, and we translated that into the
+ * number of bytes a key/data pair can use before being placed on an
+ * overflow page. This calculation includes the page header, the size
+ * of the index referencing the leaf item and the size of the leaf item
+ * structure. Also, don't let the user specify a minkeypage such that
+ * a key/data pair won't fit even if both key and data are on overflow
+ * pages.
+ */
+ t->bt_ovflsize = (t->bt_psize - BTDATAOFF) / b.minkeypage -
+ (sizeof(indx_t) + NBLEAFDBT(0, 0));
+ if (t->bt_ovflsize < NBLEAFDBT(NOVFLSIZE, NOVFLSIZE) + sizeof(indx_t))
+ t->bt_ovflsize =
+ NBLEAFDBT(NOVFLSIZE, NOVFLSIZE) + sizeof(indx_t);
+
+ /* Initialize the buffer pool. */
+ if ((t->bt_mp =
+ mpool_open(NULL, t->bt_fd, t->bt_psize, ncache)) == NULL)
+ goto err;
+ if (!F_ISSET(t, B_INMEM))
+ mpool_filter(t->bt_mp, __bt_pgin, __bt_pgout, t);
+
+ /* Create a root page if new tree. */
+ if (nroot(t) == RET_ERROR)
+ goto err;
+
+ /* Global flags. */
+ if (dflags & DB_LOCK)
+ F_SET(t, B_DB_LOCK);
+ if (dflags & DB_SHMEM)
+ F_SET(t, B_DB_SHMEM);
+ if (dflags & DB_TXN)
+ F_SET(t, B_DB_TXN);
+
+ return (dbp);
+
+einval: errno = EINVAL;
+ goto err;
+
+eftype: errno = EFTYPE;
+ goto err;
+
+err: if (t) {
+ if (t->bt_dbp)
+ free(t->bt_dbp);
+ if (t->bt_fd != -1)
+ (void)close(t->bt_fd);
+ free(t);
+ }
+ return (NULL);
+}
+
+/*
+ * NROOT -- Create the root of a new tree.
+ *
+ * Parameters:
+ * t: tree
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS
+ */
+static int
+nroot(t)
+ BTREE *t;
+{
+ PAGE *meta, *root;
+ pgno_t npg;
+
+ if ((meta = mpool_get(t->bt_mp, 0, 0)) != NULL) {
+ mpool_put(t->bt_mp, meta, 0);
+ return (RET_SUCCESS);
+ }
+ if (errno != EINVAL) /* It's OK to not exist. */
+ return (RET_ERROR);
+ errno = 0;
+
+ if ((meta = mpool_new(t->bt_mp, &npg)) == NULL)
+ return (RET_ERROR);
+
+ if ((root = mpool_new(t->bt_mp, &npg)) == NULL)
+ return (RET_ERROR);
+
+ if (npg != P_ROOT)
+ return (RET_ERROR);
+ root->pgno = npg;
+ root->prevpg = root->nextpg = P_INVALID;
+ root->lower = BTDATAOFF;
+ root->upper = t->bt_psize;
+ root->flags = P_BLEAF;
+ memset(meta, 0, t->bt_psize);
+ mpool_put(t->bt_mp, meta, MPOOL_DIRTY);
+ mpool_put(t->bt_mp, root, MPOOL_DIRTY);
+ return (RET_SUCCESS);
+}
+
+static int
+tmp()
+{
+ sigset_t set, oset;
+ int fd;
+ char *envtmp;
+ char path[MAXPATHLEN];
+
+ envtmp = getenv("TMPDIR");
+ (void)snprintf(path,
+ sizeof(path), "%s/bt.XXXXXX", envtmp ? envtmp : "/tmp");
+
+ (void)sigfillset(&set);
+ (void)sigprocmask(SIG_BLOCK, &set, &oset);
+ if ((fd = mkstemp(path)) != -1)
+ (void)unlink(path);
+ (void)sigprocmask(SIG_SETMASK, &oset, NULL);
+ return(fd);
+}
+
+static int
+byteorder()
+{
+ u_int32_t x;
+ u_char *p;
+
+ x = 0x01020304;
+ p = (u_char *)&x;
+ switch (*p) {
+ case 1:
+ return (BIG_ENDIAN);
+ case 4:
+ return (LITTLE_ENDIAN);
+ default:
+ return (0);
+ }
+}
+
+int
+__bt_fd(dbp)
+ const DB *dbp;
+{
+ BTREE *t;
+
+ t = dbp->internal;
+
+ /* Toss any page pinned across calls. */
+ if (t->bt_pinned != NULL) {
+ mpool_put(t->bt_mp, t->bt_pinned, 0);
+ t->bt_pinned = NULL;
+ }
+
+ /* In-memory database can't have a file descriptor. */
+ if (F_ISSET(t, B_INMEM)) {
+ errno = ENOENT;
+ return (-1);
+ }
+ return (t->bt_fd);
+}
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Mike Olson.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)bt_overflow.c 8.5 (Berkeley) 7/16/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <db.h>
+#include "btree.h"
+
+/*
+ * Big key/data code.
+ *
+ * Big key and data entries are stored on linked lists of pages. The initial
+ * reference is byte string stored with the key or data and is the page number
+ * and size. The actual record is stored in a chain of pages linked by the
+ * nextpg field of the PAGE header.
+ *
+ * The first page of the chain has a special property. If the record is used
+ * by an internal page, it cannot be deleted and the P_PRESERVE bit will be set
+ * in the header.
+ *
+ * XXX
+ * A single DBT is written to each chain, so a lot of space on the last page
+ * is wasted. This is a fairly major bug for some data sets.
+ */
+
+/*
+ * __OVFL_GET -- Get an overflow key/data item.
+ *
+ * Parameters:
+ * t: tree
+ * p: pointer to { pgno_t, u_int32_t }
+ * buf: storage address
+ * bufsz: storage size
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS
+ */
+int
+__ovfl_get(t, p, ssz, buf, bufsz)
+ BTREE *t;
+ void *p;
+ size_t *ssz;
+ void **buf;
+ size_t *bufsz;
+{
+ PAGE *h;
+ pgno_t pg;
+ size_t nb, plen;
+ u_int32_t sz;
+
+ memmove(&pg, p, sizeof(pgno_t));
+ memmove(&sz, (char *)p + sizeof(pgno_t), sizeof(u_int32_t));
+ *ssz = sz;
+
+#ifdef DEBUG
+ if (pg == P_INVALID || sz == 0)
+ abort();
+#endif
+ /* Make the buffer bigger as necessary. */
+ if (*bufsz < sz) {
+ *buf = (char *)(*buf == NULL ? malloc(sz) : realloc(*buf, sz));
+ if (*buf == NULL)
+ return (RET_ERROR);
+ *bufsz = sz;
+ }
+
+ /*
+ * Step through the linked list of pages, copying the data on each one
+ * into the buffer. Never copy more than the data's length.
+ */
+ plen = t->bt_psize - BTDATAOFF;
+ for (p = *buf;; p = (char *)p + nb, pg = h->nextpg) {
+ if ((h = mpool_get(t->bt_mp, pg, 0)) == NULL)
+ return (RET_ERROR);
+
+ nb = MIN(sz, plen);
+ memmove(p, (char *)h + BTDATAOFF, nb);
+ mpool_put(t->bt_mp, h, 0);
+
+ if ((sz -= nb) == 0)
+ break;
+ }
+ return (RET_SUCCESS);
+}
+
+/*
+ * __OVFL_PUT -- Store an overflow key/data item.
+ *
+ * Parameters:
+ * t: tree
+ * data: DBT to store
+ * pgno: storage page number
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS
+ */
+int
+__ovfl_put(t, dbt, pg)
+ BTREE *t;
+ const DBT *dbt;
+ pgno_t *pg;
+{
+ PAGE *h, *last;
+ void *p;
+ pgno_t npg;
+ size_t nb, plen;
+ u_int32_t sz;
+
+ /*
+ * Allocate pages and copy the key/data record into them. Store the
+ * number of the first page in the chain.
+ */
+ plen = t->bt_psize - BTDATAOFF;
+ for (last = NULL, p = dbt->data, sz = dbt->size;;
+ p = (char *)p + plen, last = h) {
+ if ((h = __bt_new(t, &npg)) == NULL)
+ return (RET_ERROR);
+
+ h->pgno = npg;
+ h->nextpg = h->prevpg = P_INVALID;
+ h->flags = P_OVERFLOW;
+ h->lower = h->upper = 0;
+
+ nb = MIN(sz, plen);
+ memmove((char *)h + BTDATAOFF, p, nb);
+
+ if (last) {
+ last->nextpg = h->pgno;
+ mpool_put(t->bt_mp, last, MPOOL_DIRTY);
+ } else
+ *pg = h->pgno;
+
+ if ((sz -= nb) == 0) {
+ mpool_put(t->bt_mp, h, MPOOL_DIRTY);
+ break;
+ }
+ }
+ return (RET_SUCCESS);
+}
+
+/*
+ * __OVFL_DELETE -- Delete an overflow chain.
+ *
+ * Parameters:
+ * t: tree
+ * p: pointer to { pgno_t, u_int32_t }
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS
+ */
+int
+__ovfl_delete(t, p)
+ BTREE *t;
+ void *p;
+{
+ PAGE *h;
+ pgno_t pg;
+ size_t plen;
+ u_int32_t sz;
+
+ memmove(&pg, p, sizeof(pgno_t));
+ memmove(&sz, (char *)p + sizeof(pgno_t), sizeof(u_int32_t));
+
+#ifdef DEBUG
+ if (pg == P_INVALID || sz == 0)
+ abort();
+#endif
+ if ((h = mpool_get(t->bt_mp, pg, 0)) == NULL)
+ return (RET_ERROR);
+
+ /* Don't delete chains used by internal pages. */
+ if (h->flags & P_PRESERVE) {
+ mpool_put(t->bt_mp, h, 0);
+ return (RET_SUCCESS);
+ }
+
+ /* Step through the chain, calling the free routine for each page. */
+ for (plen = t->bt_psize - BTDATAOFF;; sz -= plen) {
+ pg = h->nextpg;
+ __bt_free(t, h);
+ if (sz <= plen)
+ break;
+ if ((h = mpool_get(t->bt_mp, pg, 0)) == NULL)
+ return (RET_ERROR);
+ }
+ return (RET_SUCCESS);
+}
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)bt_page.c 8.3 (Berkeley) 7/14/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <stdio.h>
+
+#include <db.h>
+#include "btree.h"
+
+/*
+ * __bt_free --
+ * Put a page on the freelist.
+ *
+ * Parameters:
+ * t: tree
+ * h: page to free
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS
+ *
+ * Side-effect:
+ * mpool_put's the page.
+ */
+int
+__bt_free(t, h)
+ BTREE *t;
+ PAGE *h;
+{
+ /* Insert the page at the head of the free list. */
+ h->prevpg = P_INVALID;
+ h->nextpg = t->bt_free;
+ t->bt_free = h->pgno;
+
+ /* Make sure the page gets written back. */
+ return (mpool_put(t->bt_mp, h, MPOOL_DIRTY));
+}
+
+/*
+ * __bt_new --
+ * Get a new page, preferably from the freelist.
+ *
+ * Parameters:
+ * t: tree
+ * npg: storage for page number.
+ *
+ * Returns:
+ * Pointer to a page, NULL on error.
+ */
+PAGE *
+__bt_new(t, npg)
+ BTREE *t;
+ pgno_t *npg;
+{
+ PAGE *h;
+
+ if (t->bt_free != P_INVALID &&
+ (h = mpool_get(t->bt_mp, t->bt_free, 0)) != NULL) {
+ *npg = t->bt_free;
+ t->bt_free = h->nextpg;
+ return (h);
+ }
+ return (mpool_new(t->bt_mp, npg));
+}
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Mike Olson.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)bt_put.c 8.8 (Berkeley) 7/26/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <db.h>
+#include "btree.h"
+
+static EPG *bt_fast __P((BTREE *, const DBT *, const DBT *, int *));
+
+/*
+ * __BT_PUT -- Add a btree item to the tree.
+ *
+ * Parameters:
+ * dbp: pointer to access method
+ * key: key
+ * data: data
+ * flag: R_NOOVERWRITE
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS and RET_SPECIAL if the key is already in the
+ * tree and R_NOOVERWRITE specified.
+ */
+int
+__bt_put(dbp, key, data, flags)
+ const DB *dbp;
+ DBT *key;
+ const DBT *data;
+ u_int flags;
+{
+ BTREE *t;
+ DBT tkey, tdata;
+ EPG *e;
+ PAGE *h;
+ indx_t index, nxtindex;
+ pgno_t pg;
+ u_int32_t nbytes;
+ int dflags, exact, status;
+ char *dest, db[NOVFLSIZE], kb[NOVFLSIZE];
+
+ t = dbp->internal;
+
+ /* Toss any page pinned across calls. */
+ if (t->bt_pinned != NULL) {
+ mpool_put(t->bt_mp, t->bt_pinned, 0);
+ t->bt_pinned = NULL;
+ }
+
+ /* Check for change to a read-only tree. */
+ if (F_ISSET(t, B_RDONLY)) {
+ errno = EPERM;
+ return (RET_ERROR);
+ }
+
+ switch (flags) {
+ case 0:
+ case R_NOOVERWRITE:
+ break;
+ case R_CURSOR:
+ /*
+ * If flags is R_CURSOR, put the cursor. Must already
+ * have started a scan and not have already deleted it.
+ */
+ if (F_ISSET(&t->bt_cursor, CURS_INIT) &&
+ !F_ISSET(&t->bt_cursor,
+ CURS_ACQUIRE | CURS_AFTER | CURS_BEFORE))
+ break;
+ /* FALLTHROUGH */
+ default:
+ errno = EINVAL;
+ return (RET_ERROR);
+ }
+
+ /*
+ * If the key/data pair won't fit on a page, store it on overflow
+ * pages. Only put the key on the overflow page if the pair are
+ * still too big after moving the data to an overflow page.
+ *
+ * XXX
+ * If the insert fails later on, the overflow pages aren't recovered.
+ */
+ dflags = 0;
+ if (key->size + data->size > t->bt_ovflsize) {
+ if (key->size > t->bt_ovflsize) {
+storekey: if (__ovfl_put(t, key, &pg) == RET_ERROR)
+ return (RET_ERROR);
+ tkey.data = kb;
+ tkey.size = NOVFLSIZE;
+ memmove(kb, &pg, sizeof(pgno_t));
+ memmove(kb + sizeof(pgno_t),
+ &key->size, sizeof(u_int32_t));
+ dflags |= P_BIGKEY;
+ key = &tkey;
+ }
+ if (key->size + data->size > t->bt_ovflsize) {
+ if (__ovfl_put(t, data, &pg) == RET_ERROR)
+ return (RET_ERROR);
+ tdata.data = db;
+ tdata.size = NOVFLSIZE;
+ memmove(db, &pg, sizeof(pgno_t));
+ memmove(db + sizeof(pgno_t),
+ &data->size, sizeof(u_int32_t));
+ dflags |= P_BIGDATA;
+ data = &tdata;
+ }
+ if (key->size + data->size > t->bt_ovflsize)
+ goto storekey;
+ }
+
+ /* Replace the cursor. */
+ if (flags == R_CURSOR) {
+ if ((h = mpool_get(t->bt_mp, t->bt_cursor.pg.pgno, 0)) == NULL)
+ return (RET_ERROR);
+ index = t->bt_cursor.pg.index;
+ goto delete;
+ }
+
+ /*
+ * Find the key to delete, or, the location at which to insert.
+ * Bt_fast and __bt_search both pin the returned page.
+ */
+ if (t->bt_order == NOT || (e = bt_fast(t, key, data, &exact)) == NULL)
+ if ((e = __bt_search(t, key, &exact)) == NULL)
+ return (RET_ERROR);
+ h = e->page;
+ index = e->index;
+
+ /*
+ * Add the key/data pair to the tree. If an identical key is already
+ * in the tree, and R_NOOVERWRITE is set, an error is returned. If
+ * R_NOOVERWRITE is not set, the key is either added (if duplicates are
+ * permitted) or an error is returned.
+ */
+ switch (flags) {
+ case R_NOOVERWRITE:
+ if (!exact)
+ break;
+ mpool_put(t->bt_mp, h, 0);
+ return (RET_SPECIAL);
+ default:
+ if (!exact || !F_ISSET(t, B_NODUPS))
+ break;
+ /*
+ * !!!
+ * Note, the delete may empty the page, so we need to put a
+ * new entry into the page immediately.
+ */
+delete: if (__bt_dleaf(t, key, h, index) == RET_ERROR) {
+ mpool_put(t->bt_mp, h, 0);
+ return (RET_ERROR);
+ }
+ break;
+ }
+
+ /*
+ * If not enough room, or the user has put a ceiling on the number of
+ * keys permitted in the page, split the page. The split code will
+ * insert the key and data and unpin the current page. If inserting
+ * into the offset array, shift the pointers up.
+ */
+ nbytes = NBLEAFDBT(key->size, data->size);
+ if (h->upper - h->lower < nbytes + sizeof(indx_t)) {
+ if ((status = __bt_split(t, h, key,
+ data, dflags, nbytes, index)) != RET_SUCCESS)
+ return (status);
+ goto success;
+ }
+
+ if (index < (nxtindex = NEXTINDEX(h)))
+ memmove(h->linp + index + 1, h->linp + index,
+ (nxtindex - index) * sizeof(indx_t));
+ h->lower += sizeof(indx_t);
+
+ h->linp[index] = h->upper -= nbytes;
+ dest = (char *)h + h->upper;
+ WR_BLEAF(dest, key, data, dflags);
+
+ /* If the cursor is on this page, adjust it as necessary. */
+ if (F_ISSET(&t->bt_cursor, CURS_INIT) &&
+ !F_ISSET(&t->bt_cursor, CURS_ACQUIRE) &&
+ t->bt_cursor.pg.pgno == h->pgno && t->bt_cursor.pg.index >= index)
+ ++t->bt_cursor.pg.index;
+
+ if (t->bt_order == NOT)
+ if (h->nextpg == P_INVALID) {
+ if (index == NEXTINDEX(h) - 1) {
+ t->bt_order = FORWARD;
+ t->bt_last.index = index;
+ t->bt_last.pgno = h->pgno;
+ }
+ } else if (h->prevpg == P_INVALID) {
+ if (index == 0) {
+ t->bt_order = BACK;
+ t->bt_last.index = 0;
+ t->bt_last.pgno = h->pgno;
+ }
+ }
+
+ mpool_put(t->bt_mp, h, MPOOL_DIRTY);
+
+success:
+ if (flags == R_SETCURSOR)
+ __bt_setcur(t, e->page->pgno, e->index);
+
+ F_SET(t, B_MODIFIED);
+ return (RET_SUCCESS);
+}
+
+#ifdef STATISTICS
+u_long bt_cache_hit, bt_cache_miss;
+#endif
+
+/*
+ * BT_FAST -- Do a quick check for sorted data.
+ *
+ * Parameters:
+ * t: tree
+ * key: key to insert
+ *
+ * Returns:
+ * EPG for new record or NULL if not found.
+ */
+static EPG *
+bt_fast(t, key, data, exactp)
+ BTREE *t;
+ const DBT *key, *data;
+ int *exactp;
+{
+ PAGE *h;
+ u_int32_t nbytes;
+ int cmp;
+
+ if ((h = mpool_get(t->bt_mp, t->bt_last.pgno, 0)) == NULL) {
+ t->bt_order = NOT;
+ return (NULL);
+ }
+ t->bt_cur.page = h;
+ t->bt_cur.index = t->bt_last.index;
+
+ /*
+ * If won't fit in this page or have too many keys in this page,
+ * have to search to get split stack.
+ */
+ nbytes = NBLEAFDBT(key->size, data->size);
+ if (h->upper - h->lower < nbytes + sizeof(indx_t))
+ goto miss;
+
+ if (t->bt_order == FORWARD) {
+ if (t->bt_cur.page->nextpg != P_INVALID)
+ goto miss;
+ if (t->bt_cur.index != NEXTINDEX(h) - 1)
+ goto miss;
+ if ((cmp = __bt_cmp(t, key, &t->bt_cur)) < 0)
+ goto miss;
+ t->bt_last.index = cmp ? ++t->bt_cur.index : t->bt_cur.index;
+ } else {
+ if (t->bt_cur.page->prevpg != P_INVALID)
+ goto miss;
+ if (t->bt_cur.index != 0)
+ goto miss;
+ if ((cmp = __bt_cmp(t, key, &t->bt_cur)) > 0)
+ goto miss;
+ t->bt_last.index = 0;
+ }
+ *exactp = cmp == 0;
+#ifdef STATISTICS
+ ++bt_cache_hit;
+#endif
+ return (&t->bt_cur);
+
+miss:
+#ifdef STATISTICS
+ ++bt_cache_miss;
+#endif
+ t->bt_order = NOT;
+ mpool_put(t->bt_mp, h, 0);
+ return (NULL);
+}
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Mike Olson.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)bt_search.c 8.8 (Berkeley) 7/31/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <stdio.h>
+
+#include <db.h>
+#include "btree.h"
+
+static int __bt_snext __P((BTREE *, PAGE *, const DBT *, int *));
+static int __bt_sprev __P((BTREE *, PAGE *, const DBT *, int *));
+
+/*
+ * __bt_search --
+ * Search a btree for a key.
+ *
+ * Parameters:
+ * t: tree to search
+ * key: key to find
+ * exactp: pointer to exact match flag
+ *
+ * Returns:
+ * The EPG for matching record, if any, or the EPG for the location
+ * of the key, if it were inserted into the tree, is entered into
+ * the bt_cur field of the tree. A pointer to the field is returned.
+ */
+EPG *
+__bt_search(t, key, exactp)
+ BTREE *t;
+ const DBT *key;
+ int *exactp;
+{
+ PAGE *h;
+ indx_t base, index, lim;
+ pgno_t pg;
+ int cmp;
+
+ BT_CLR(t);
+ for (pg = P_ROOT;;) {
+ if ((h = mpool_get(t->bt_mp, pg, 0)) == NULL)
+ return (NULL);
+
+ /* Do a binary search on the current page. */
+ t->bt_cur.page = h;
+ for (base = 0, lim = NEXTINDEX(h); lim; lim >>= 1) {
+ t->bt_cur.index = index = base + (lim >> 1);
+ if ((cmp = __bt_cmp(t, key, &t->bt_cur)) == 0) {
+ if (h->flags & P_BLEAF) {
+ *exactp = 1;
+ return (&t->bt_cur);
+ }
+ goto next;
+ }
+ if (cmp > 0) {
+ base = index + 1;
+ --lim;
+ }
+ }
+
+ /*
+ * If it's a leaf page, we're almost done. If no duplicates
+ * are allowed, or we have an exact match, we're done. Else,
+ * it's possible that there were matching keys on this page,
+ * which later deleted, and we're on a page with no matches
+ * while there are matches on other pages. If at the start or
+ * end of a page, check the adjacent page.
+ */
+ if (h->flags & P_BLEAF) {
+ if (!F_ISSET(t, B_NODUPS)) {
+ if (base == 0 &&
+ h->prevpg != P_INVALID &&
+ __bt_sprev(t, h, key, exactp))
+ return (&t->bt_cur);
+ if (base == NEXTINDEX(h) &&
+ h->nextpg != P_INVALID &&
+ __bt_snext(t, h, key, exactp))
+ return (&t->bt_cur);
+ }
+ *exactp = 0;
+ t->bt_cur.index = base;
+ return (&t->bt_cur);
+ }
+
+ /*
+ * No match found. Base is the smallest index greater than
+ * key and may be zero or a last + 1 index. If it's non-zero,
+ * decrement by one, and record the internal page which should
+ * be a parent page for the key. If a split later occurs, the
+ * inserted page will be to the right of the saved page.
+ */
+ index = base ? base - 1 : base;
+
+next: BT_PUSH(t, h->pgno, index);
+ pg = GETBINTERNAL(h, index)->pgno;
+ mpool_put(t->bt_mp, h, 0);
+ }
+}
+
+/*
+ * __bt_snext --
+ * Check for an exact match after the key.
+ *
+ * Parameters:
+ * t: tree
+ * h: current page
+ * key: key
+ * exactp: pointer to exact match flag
+ *
+ * Returns:
+ * If an exact match found.
+ */
+static int
+__bt_snext(t, h, key, exactp)
+ BTREE *t;
+ PAGE *h;
+ const DBT *key;
+ int *exactp;
+{
+ EPG e;
+
+ /*
+ * Get the next page. The key is either an exact
+ * match, or not as good as the one we already have.
+ */
+ if ((e.page = mpool_get(t->bt_mp, h->nextpg, 0)) == NULL)
+ return (0);
+ e.index = 0;
+ if (__bt_cmp(t, key, &e) == 0) {
+ mpool_put(t->bt_mp, h, 0);
+ t->bt_cur = e;
+ *exactp = 1;
+ return (1);
+ }
+ mpool_put(t->bt_mp, e.page, 0);
+ return (0);
+}
+
+/*
+ * __bt_sprev --
+ * Check for an exact match before the key.
+ *
+ * Parameters:
+ * t: tree
+ * h: current page
+ * key: key
+ * exactp: pointer to exact match flag
+ *
+ * Returns:
+ * If an exact match found.
+ */
+static int
+__bt_sprev(t, h, key, exactp)
+ BTREE *t;
+ PAGE *h;
+ const DBT *key;
+ int *exactp;
+{
+ EPG e;
+
+ /*
+ * Get the previous page. The key is either an exact
+ * match, or not as good as the one we already have.
+ */
+ if ((e.page = mpool_get(t->bt_mp, h->prevpg, 0)) == NULL)
+ return (0);
+ e.index = NEXTINDEX(e.page) - 1;
+ if (__bt_cmp(t, key, &e) == 0) {
+ mpool_put(t->bt_mp, h, 0);
+ t->bt_cur = e;
+ *exactp = 1;
+ return (1);
+ }
+ mpool_put(t->bt_mp, e.page, 0);
+ return (0);
+}
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Mike Olson.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)bt_seq.c 8.7 (Berkeley) 7/20/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <db.h>
+#include "btree.h"
+
+static int __bt_first __P((BTREE *, const DBT *, EPG *, int *));
+static int __bt_seqadv __P((BTREE *, EPG *, int));
+static int __bt_seqset __P((BTREE *, EPG *, DBT *, int));
+
+/*
+ * Sequential scan support.
+ *
+ * The tree can be scanned sequentially, starting from either end of the
+ * tree or from any specific key. A scan request before any scanning is
+ * done is initialized as starting from the least node.
+ */
+
+/*
+ * __bt_seq --
+ * Btree sequential scan interface.
+ *
+ * Parameters:
+ * dbp: pointer to access method
+ * key: key for positioning and return value
+ * data: data return value
+ * flags: R_CURSOR, R_FIRST, R_LAST, R_NEXT, R_PREV.
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS or RET_SPECIAL if there's no next key.
+ */
+int
+__bt_seq(dbp, key, data, flags)
+ const DB *dbp;
+ DBT *key, *data;
+ u_int flags;
+{
+ BTREE *t;
+ EPG e;
+ int status;
+
+ t = dbp->internal;
+
+ /* Toss any page pinned across calls. */
+ if (t->bt_pinned != NULL) {
+ mpool_put(t->bt_mp, t->bt_pinned, 0);
+ t->bt_pinned = NULL;
+ }
+
+ /*
+ * If scan unitialized as yet, or starting at a specific record, set
+ * the scan to a specific key. Both __bt_seqset and __bt_seqadv pin
+ * the page the cursor references if they're successful.
+ */
+ switch (flags) {
+ case R_NEXT:
+ case R_PREV:
+ if (F_ISSET(&t->bt_cursor, CURS_INIT)) {
+ status = __bt_seqadv(t, &e, flags);
+ break;
+ }
+ /* FALLTHROUGH */
+ case R_FIRST:
+ case R_LAST:
+ case R_CURSOR:
+ status = __bt_seqset(t, &e, key, flags);
+ break;
+ default:
+ errno = EINVAL;
+ return (RET_ERROR);
+ }
+
+ if (status == RET_SUCCESS) {
+ __bt_setcur(t, e.page->pgno, e.index);
+
+ status =
+ __bt_ret(t, &e, key, &t->bt_rkey, data, &t->bt_rdata, 0);
+
+ /*
+ * If the user is doing concurrent access, we copied the
+ * key/data, toss the page.
+ */
+ if (F_ISSET(t, B_DB_LOCK))
+ mpool_put(t->bt_mp, e.page, 0);
+ else
+ t->bt_pinned = e.page;
+ }
+ return (status);
+}
+
+/*
+ * __bt_seqset --
+ * Set the sequential scan to a specific key.
+ *
+ * Parameters:
+ * t: tree
+ * ep: storage for returned key
+ * key: key for initial scan position
+ * flags: R_CURSOR, R_FIRST, R_LAST, R_NEXT, R_PREV
+ *
+ * Side effects:
+ * Pins the page the cursor references.
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS or RET_SPECIAL if there's no next key.
+ */
+static int
+__bt_seqset(t, ep, key, flags)
+ BTREE *t;
+ EPG *ep;
+ DBT *key;
+ int flags;
+{
+ PAGE *h;
+ pgno_t pg;
+ int exact;
+
+ /*
+ * Find the first, last or specific key in the tree and point the
+ * cursor at it. The cursor may not be moved until a new key has
+ * been found.
+ */
+ switch (flags) {
+ case R_CURSOR: /* Keyed scan. */
+ /*
+ * Find the first instance of the key or the smallest key
+ * which is greater than or equal to the specified key.
+ */
+ if (key->data == NULL || key->size == 0) {
+ errno = EINVAL;
+ return (RET_ERROR);
+ }
+ return (__bt_first(t, key, ep, &exact));
+ case R_FIRST: /* First record. */
+ case R_NEXT:
+ /* Walk down the left-hand side of the tree. */
+ for (pg = P_ROOT;;) {
+ if ((h = mpool_get(t->bt_mp, pg, 0)) == NULL)
+ return (RET_ERROR);
+
+ /* Check for an empty tree. */
+ if (NEXTINDEX(h) == 0) {
+ mpool_put(t->bt_mp, h, 0);
+ return (RET_SPECIAL);
+ }
+
+ if (h->flags & (P_BLEAF | P_RLEAF))
+ break;
+ pg = GETBINTERNAL(h, 0)->pgno;
+ mpool_put(t->bt_mp, h, 0);
+ }
+ ep->page = h;
+ ep->index = 0;
+ break;
+ case R_LAST: /* Last record. */
+ case R_PREV:
+ /* Walk down the right-hand side of the tree. */
+ for (pg = P_ROOT;;) {
+ if ((h = mpool_get(t->bt_mp, pg, 0)) == NULL)
+ return (RET_ERROR);
+
+ /* Check for an empty tree. */
+ if (NEXTINDEX(h) == 0) {
+ mpool_put(t->bt_mp, h, 0);
+ return (RET_SPECIAL);
+ }
+
+ if (h->flags & (P_BLEAF | P_RLEAF))
+ break;
+ pg = GETBINTERNAL(h, NEXTINDEX(h) - 1)->pgno;
+ mpool_put(t->bt_mp, h, 0);
+ }
+
+ ep->page = h;
+ ep->index = NEXTINDEX(h) - 1;
+ break;
+ }
+ return (RET_SUCCESS);
+}
+
+/*
+ * __bt_seqadvance --
+ * Advance the sequential scan.
+ *
+ * Parameters:
+ * t: tree
+ * flags: R_NEXT, R_PREV
+ *
+ * Side effects:
+ * Pins the page the new key/data record is on.
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS or RET_SPECIAL if there's no next key.
+ */
+static int
+__bt_seqadv(t, ep, flags)
+ BTREE *t;
+ EPG *ep;
+ int flags;
+{
+ CURSOR *c;
+ PAGE *h;
+ indx_t index;
+ pgno_t pg;
+ int exact;
+
+ /*
+ * There are a couple of states that we can be in. The cursor has
+ * been initialized by the time we get here, but that's all we know.
+ */
+ c = &t->bt_cursor;
+
+ /*
+ * The cursor was deleted where there weren't any duplicate records,
+ * so the key was saved. Find out where that key would go in the
+ * current tree. It doesn't matter if the returned key is an exact
+ * match or not -- if it's an exact match, the record was added after
+ * the delete so we can just return it. If not, as long as there's
+ * a record there, return it.
+ */
+ if (F_ISSET(c, CURS_ACQUIRE))
+ return (__bt_first(t, &c->key, ep, &exact));
+
+ /* Get the page referenced by the cursor. */
+ if ((h = mpool_get(t->bt_mp, c->pg.pgno, 0)) == NULL)
+ return (RET_ERROR);
+
+ /*
+ * Find the next/previous record in the tree and point the cursor at
+ * it. The cursor may not be moved until a new key has been found.
+ */
+ switch (flags) {
+ case R_NEXT: /* Next record. */
+ /*
+ * The cursor was deleted in duplicate records, and moved
+ * forward to a record that has yet to be returned. Clear
+ * that flag, and return the record.
+ */
+ if (F_ISSET(c, CURS_AFTER))
+ goto usecurrent;
+ index = c->pg.index;
+ if (++index == NEXTINDEX(h)) {
+ pg = h->nextpg;
+ mpool_put(t->bt_mp, h, 0);
+ if (pg == P_INVALID)
+ return (RET_SPECIAL);
+ if ((h = mpool_get(t->bt_mp, pg, 0)) == NULL)
+ return (RET_ERROR);
+ index = 0;
+ }
+ break;
+ case R_PREV: /* Previous record. */
+ /*
+ * The cursor was deleted in duplicate records, and moved
+ * backward to a record that has yet to be returned. Clear
+ * that flag, and return the record.
+ */
+ if (F_ISSET(c, CURS_BEFORE)) {
+usecurrent: F_CLR(c, CURS_AFTER | CURS_BEFORE);
+ ep->page = h;
+ ep->index = c->pg.index;
+ return (RET_SUCCESS);
+ }
+ index = c->pg.index;
+ if (index == 0) {
+ pg = h->prevpg;
+ mpool_put(t->bt_mp, h, 0);
+ if (pg == P_INVALID)
+ return (RET_SPECIAL);
+ if ((h = mpool_get(t->bt_mp, pg, 0)) == NULL)
+ return (RET_ERROR);
+ index = NEXTINDEX(h) - 1;
+ } else
+ --index;
+ break;
+ }
+
+ ep->page = h;
+ ep->index = index;
+ return (RET_SUCCESS);
+}
+
+/*
+ * __bt_first --
+ * Find the first entry.
+ *
+ * Parameters:
+ * t: the tree
+ * key: the key
+ * erval: return EPG
+ * exactp: pointer to exact match flag
+ *
+ * Returns:
+ * The first entry in the tree greater than or equal to key,
+ * or RET_SPECIAL if no such key exists.
+ */
+static int
+__bt_first(t, key, erval, exactp)
+ BTREE *t;
+ const DBT *key;
+ EPG *erval;
+ int *exactp;
+{
+ PAGE *h;
+ EPG *ep, save;
+ pgno_t pg;
+
+ /*
+ * Find any matching record; __bt_search pins the page.
+ *
+ * If it's an exact match and duplicates are possible, walk backwards
+ * in the tree until we find the first one. Otherwise, make sure it's
+ * a valid key (__bt_search may return an index just past the end of a
+ * page) and return it.
+ */
+ if ((ep = __bt_search(t, key, exactp)) == NULL)
+ return (NULL);
+ if (*exactp) {
+ if (F_ISSET(t, B_NODUPS)) {
+ *erval = *ep;
+ return (RET_SUCCESS);
+ }
+
+ /*
+ * Walk backwards, as long as the entry matches and there are
+ * keys left in the tree. Save a copy of each match in case
+ * we go too far.
+ */
+ save = *ep;
+ h = ep->page;
+ do {
+ if (save.page->pgno != ep->page->pgno) {
+ mpool_put(t->bt_mp, save.page, 0);
+ save = *ep;
+ } else
+ save.index = ep->index;
+
+ /*
+ * Don't unpin the page the last (or original) match
+ * was on, but make sure it's unpinned if an error
+ * occurs.
+ */
+ if (ep->index == 0) {
+ if (h->prevpg == P_INVALID)
+ break;
+ if (h->pgno != save.page->pgno)
+ mpool_put(t->bt_mp, h, 0);
+ if ((h = mpool_get(t->bt_mp,
+ h->prevpg, 0)) == NULL) {
+ if (h->pgno == save.page->pgno)
+ mpool_put(t->bt_mp,
+ save.page, 0);
+ return (RET_ERROR);
+ }
+ ep->page = h;
+ ep->index = NEXTINDEX(h);
+ }
+ --ep->index;
+ } while (__bt_cmp(t, key, ep) == 0);
+
+ /*
+ * Reach here with the last page that was looked at pinned,
+ * which may or may not be the same as the last (or original)
+ * match page. If it's not useful, release it.
+ */
+ if (h->pgno != save.page->pgno)
+ mpool_put(t->bt_mp, h, 0);
+
+ *erval = save;
+ return (RET_SUCCESS);
+ }
+
+ /* If at the end of a page, find the next entry. */
+ if (ep->index == NEXTINDEX(ep->page)) {
+ h = ep->page;
+ pg = h->nextpg;
+ mpool_put(t->bt_mp, h, 0);
+ if (pg == P_INVALID)
+ return (RET_SPECIAL);
+ if ((h = mpool_get(t->bt_mp, pg, 0)) == NULL)
+ return (RET_ERROR);
+ ep->index = 0;
+ ep->page = h;
+ }
+ *erval = *ep;
+ return (RET_SUCCESS);
+}
+
+/*
+ * __bt_setcur --
+ * Set the cursor to an entry in the tree.
+ *
+ * Parameters:
+ * t: the tree
+ * pgno: page number
+ * index: page index
+ */
+void
+__bt_setcur(t, pgno, index)
+ BTREE *t;
+ pgno_t pgno;
+ u_int index;
+{
+ /* Lose any already deleted key. */
+ if (t->bt_cursor.key.data != NULL) {
+ free(t->bt_cursor.key.data);
+ t->bt_cursor.key.size = 0;
+ t->bt_cursor.key.data = NULL;
+ }
+ F_CLR(&t->bt_cursor, CURS_ACQUIRE | CURS_AFTER | CURS_BEFORE);
+
+ /* Update the cursor. */
+ t->bt_cursor.pg.pgno = pgno;
+ t->bt_cursor.pg.index = index;
+ F_SET(&t->bt_cursor, CURS_INIT);
+}
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Mike Olson.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)bt_split.c 8.9 (Berkeley) 7/26/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <db.h>
+#include "btree.h"
+
+static int bt_broot __P((BTREE *, PAGE *, PAGE *, PAGE *));
+static PAGE *bt_page
+ __P((BTREE *, PAGE *, PAGE **, PAGE **, indx_t *, size_t));
+static int bt_preserve __P((BTREE *, pgno_t));
+static PAGE *bt_psplit
+ __P((BTREE *, PAGE *, PAGE *, PAGE *, indx_t *, size_t));
+static PAGE *bt_root
+ __P((BTREE *, PAGE *, PAGE **, PAGE **, indx_t *, size_t));
+static int bt_rroot __P((BTREE *, PAGE *, PAGE *, PAGE *));
+static recno_t rec_total __P((PAGE *));
+
+#ifdef STATISTICS
+u_long bt_rootsplit, bt_split, bt_sortsplit, bt_pfxsaved;
+#endif
+
+/*
+ * __BT_SPLIT -- Split the tree.
+ *
+ * Parameters:
+ * t: tree
+ * sp: page to split
+ * key: key to insert
+ * data: data to insert
+ * flags: BIGKEY/BIGDATA flags
+ * ilen: insert length
+ * skip: index to leave open
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS
+ */
+int
+__bt_split(t, sp, key, data, flags, ilen, argskip)
+ BTREE *t;
+ PAGE *sp;
+ const DBT *key, *data;
+ int flags;
+ size_t ilen;
+ u_int32_t argskip;
+{
+ BINTERNAL *bi;
+ BLEAF *bl, *tbl;
+ DBT a, b;
+ EPGNO *parent;
+ PAGE *h, *l, *r, *lchild, *rchild;
+ indx_t nxtindex;
+ u_int16_t skip;
+ u_int32_t n, nbytes, nksize;
+ int parentsplit;
+ char *dest;
+
+ /*
+ * Split the page into two pages, l and r. The split routines return
+ * a pointer to the page into which the key should be inserted and with
+ * skip set to the offset which should be used. Additionally, l and r
+ * are pinned.
+ */
+ skip = argskip;
+ h = sp->pgno == P_ROOT ?
+ bt_root(t, sp, &l, &r, &skip, ilen) :
+ bt_page(t, sp, &l, &r, &skip, ilen);
+ if (h == NULL)
+ return (RET_ERROR);
+
+ /*
+ * Insert the new key/data pair into the leaf page. (Key inserts
+ * always cause a leaf page to split first.)
+ */
+ h->linp[skip] = h->upper -= ilen;
+ dest = (char *)h + h->upper;
+ if (F_ISSET(t, R_RECNO))
+ WR_RLEAF(dest, data, flags)
+ else
+ WR_BLEAF(dest, key, data, flags)
+
+ /* If the root page was split, make it look right. */
+ if (sp->pgno == P_ROOT &&
+ (F_ISSET(t, R_RECNO) ?
+ bt_rroot(t, sp, l, r) : bt_broot(t, sp, l, r)) == RET_ERROR)
+ goto err2;
+
+ /*
+ * Now we walk the parent page stack -- a LIFO stack of the pages that
+ * were traversed when we searched for the page that split. Each stack
+ * entry is a page number and a page index offset. The offset is for
+ * the page traversed on the search. We've just split a page, so we
+ * have to insert a new key into the parent page.
+ *
+ * If the insert into the parent page causes it to split, may have to
+ * continue splitting all the way up the tree. We stop if the root
+ * splits or the page inserted into didn't have to split to hold the
+ * new key. Some algorithms replace the key for the old page as well
+ * as the new page. We don't, as there's no reason to believe that the
+ * first key on the old page is any better than the key we have, and,
+ * in the case of a key being placed at index 0 causing the split, the
+ * key is unavailable.
+ *
+ * There are a maximum of 5 pages pinned at any time. We keep the left
+ * and right pages pinned while working on the parent. The 5 are the
+ * two children, left parent and right parent (when the parent splits)
+ * and the root page or the overflow key page when calling bt_preserve.
+ * This code must make sure that all pins are released other than the
+ * root page or overflow page which is unlocked elsewhere.
+ */
+ while ((parent = BT_POP(t)) != NULL) {
+ lchild = l;
+ rchild = r;
+
+ /* Get the parent page. */
+ if ((h = mpool_get(t->bt_mp, parent->pgno, 0)) == NULL)
+ goto err2;
+
+ /*
+ * The new key goes ONE AFTER the index, because the split
+ * was to the right.
+ */
+ skip = parent->index + 1;
+
+ /*
+ * Calculate the space needed on the parent page.
+ *
+ * Prefix trees: space hack when inserting into BINTERNAL
+ * pages. Retain only what's needed to distinguish between
+ * the new entry and the LAST entry on the page to its left.
+ * If the keys compare equal, retain the entire key. Note,
+ * we don't touch overflow keys, and the entire key must be
+ * retained for the next-to-left most key on the leftmost
+ * page of each level, or the search will fail. Applicable
+ * ONLY to internal pages that have leaf pages as children.
+ * Further reduction of the key between pairs of internal
+ * pages loses too much information.
+ */
+ switch (rchild->flags & P_TYPE) {
+ case P_BINTERNAL:
+ bi = GETBINTERNAL(rchild, 0);
+ nbytes = NBINTERNAL(bi->ksize);
+ break;
+ case P_BLEAF:
+ bl = GETBLEAF(rchild, 0);
+ nbytes = NBINTERNAL(bl->ksize);
+ if (t->bt_pfx && !(bl->flags & P_BIGKEY) &&
+ (h->prevpg != P_INVALID || skip > 1)) {
+ tbl = GETBLEAF(lchild, NEXTINDEX(lchild) - 1);
+ a.size = tbl->ksize;
+ a.data = tbl->bytes;
+ b.size = bl->ksize;
+ b.data = bl->bytes;
+ nksize = t->bt_pfx(&a, &b);
+ n = NBINTERNAL(nksize);
+ if (n < nbytes) {
+#ifdef STATISTICS
+ bt_pfxsaved += nbytes - n;
+#endif
+ nbytes = n;
+ } else
+ nksize = 0;
+ } else
+ nksize = 0;
+ break;
+ case P_RINTERNAL:
+ case P_RLEAF:
+ nbytes = NRINTERNAL;
+ break;
+ default:
+ abort();
+ }
+
+ /* Split the parent page if necessary or shift the indices. */
+ if (h->upper - h->lower < nbytes + sizeof(indx_t)) {
+ sp = h;
+ h = h->pgno == P_ROOT ?
+ bt_root(t, h, &l, &r, &skip, nbytes) :
+ bt_page(t, h, &l, &r, &skip, nbytes);
+ if (h == NULL)
+ goto err1;
+ parentsplit = 1;
+ } else {
+ if (skip < (nxtindex = NEXTINDEX(h)))
+ memmove(h->linp + skip + 1, h->linp + skip,
+ (nxtindex - skip) * sizeof(indx_t));
+ h->lower += sizeof(indx_t);
+ parentsplit = 0;
+ }
+
+ /* Insert the key into the parent page. */
+ switch (rchild->flags & P_TYPE) {
+ case P_BINTERNAL:
+ h->linp[skip] = h->upper -= nbytes;
+ dest = (char *)h + h->linp[skip];
+ memmove(dest, bi, nbytes);
+ ((BINTERNAL *)dest)->pgno = rchild->pgno;
+ break;
+ case P_BLEAF:
+ h->linp[skip] = h->upper -= nbytes;
+ dest = (char *)h + h->linp[skip];
+ WR_BINTERNAL(dest, nksize ? nksize : bl->ksize,
+ rchild->pgno, bl->flags & P_BIGKEY);
+ memmove(dest, bl->bytes, nksize ? nksize : bl->ksize);
+ if (bl->flags & P_BIGKEY &&
+ bt_preserve(t, *(pgno_t *)bl->bytes) == RET_ERROR)
+ goto err1;
+ break;
+ case P_RINTERNAL:
+ /*
+ * Update the left page count. If split
+ * added at index 0, fix the correct page.
+ */
+ if (skip > 0)
+ dest = (char *)h + h->linp[skip - 1];
+ else
+ dest = (char *)l + l->linp[NEXTINDEX(l) - 1];
+ ((RINTERNAL *)dest)->nrecs = rec_total(lchild);
+ ((RINTERNAL *)dest)->pgno = lchild->pgno;
+
+ /* Update the right page count. */
+ h->linp[skip] = h->upper -= nbytes;
+ dest = (char *)h + h->linp[skip];
+ ((RINTERNAL *)dest)->nrecs = rec_total(rchild);
+ ((RINTERNAL *)dest)->pgno = rchild->pgno;
+ break;
+ case P_RLEAF:
+ /*
+ * Update the left page count. If split
+ * added at index 0, fix the correct page.
+ */
+ if (skip > 0)
+ dest = (char *)h + h->linp[skip - 1];
+ else
+ dest = (char *)l + l->linp[NEXTINDEX(l) - 1];
+ ((RINTERNAL *)dest)->nrecs = NEXTINDEX(lchild);
+ ((RINTERNAL *)dest)->pgno = lchild->pgno;
+
+ /* Update the right page count. */
+ h->linp[skip] = h->upper -= nbytes;
+ dest = (char *)h + h->linp[skip];
+ ((RINTERNAL *)dest)->nrecs = NEXTINDEX(rchild);
+ ((RINTERNAL *)dest)->pgno = rchild->pgno;
+ break;
+ default:
+ abort();
+ }
+
+ /* Unpin the held pages. */
+ if (!parentsplit) {
+ mpool_put(t->bt_mp, h, MPOOL_DIRTY);
+ break;
+ }
+
+ /* If the root page was split, make it look right. */
+ if (sp->pgno == P_ROOT &&
+ (F_ISSET(t, R_RECNO) ?
+ bt_rroot(t, sp, l, r) : bt_broot(t, sp, l, r)) == RET_ERROR)
+ goto err1;
+
+ mpool_put(t->bt_mp, lchild, MPOOL_DIRTY);
+ mpool_put(t->bt_mp, rchild, MPOOL_DIRTY);
+ }
+
+ /* Unpin the held pages. */
+ mpool_put(t->bt_mp, l, MPOOL_DIRTY);
+ mpool_put(t->bt_mp, r, MPOOL_DIRTY);
+
+ /* Clear any pages left on the stack. */
+ return (RET_SUCCESS);
+
+ /*
+ * If something fails in the above loop we were already walking back
+ * up the tree and the tree is now inconsistent. Nothing much we can
+ * do about it but release any memory we're holding.
+ */
+err1: mpool_put(t->bt_mp, lchild, MPOOL_DIRTY);
+ mpool_put(t->bt_mp, rchild, MPOOL_DIRTY);
+
+err2: mpool_put(t->bt_mp, l, 0);
+ mpool_put(t->bt_mp, r, 0);
+ __dbpanic(t->bt_dbp);
+ return (RET_ERROR);
+}
+
+/*
+ * BT_PAGE -- Split a non-root page of a btree.
+ *
+ * Parameters:
+ * t: tree
+ * h: root page
+ * lp: pointer to left page pointer
+ * rp: pointer to right page pointer
+ * skip: pointer to index to leave open
+ * ilen: insert length
+ *
+ * Returns:
+ * Pointer to page in which to insert or NULL on error.
+ */
+static PAGE *
+bt_page(t, h, lp, rp, skip, ilen)
+ BTREE *t;
+ PAGE *h, **lp, **rp;
+ indx_t *skip;
+ size_t ilen;
+{
+ PAGE *l, *r, *tp;
+ pgno_t npg;
+
+#ifdef STATISTICS
+ ++bt_split;
+#endif
+ /* Put the new right page for the split into place. */
+ if ((r = __bt_new(t, &npg)) == NULL)
+ return (NULL);
+ r->pgno = npg;
+ r->lower = BTDATAOFF;
+ r->upper = t->bt_psize;
+ r->nextpg = h->nextpg;
+ r->prevpg = h->pgno;
+ r->flags = h->flags & P_TYPE;
+
+ /*
+ * If we're splitting the last page on a level because we're appending
+ * a key to it (skip is NEXTINDEX()), it's likely that the data is
+ * sorted. Adding an empty page on the side of the level is less work
+ * and can push the fill factor much higher than normal. If we're
+ * wrong it's no big deal, we'll just do the split the right way next
+ * time. It may look like it's equally easy to do a similar hack for
+ * reverse sorted data, that is, split the tree left, but it's not.
+ * Don't even try.
+ */
+ if (h->nextpg == P_INVALID && *skip == NEXTINDEX(h)) {
+#ifdef STATISTICS
+ ++bt_sortsplit;
+#endif
+ h->nextpg = r->pgno;
+ r->lower = BTDATAOFF + sizeof(indx_t);
+ *skip = 0;
+ *lp = h;
+ *rp = r;
+ return (r);
+ }
+
+ /* Put the new left page for the split into place. */
+ if ((l = (PAGE *)malloc(t->bt_psize)) == NULL) {
+ mpool_put(t->bt_mp, r, 0);
+ return (NULL);
+ }
+#ifdef PURIFY
+ memset(l, 0xff, t->bt_psize);
+#endif
+ l->pgno = h->pgno;
+ l->nextpg = r->pgno;
+ l->prevpg = h->prevpg;
+ l->lower = BTDATAOFF;
+ l->upper = t->bt_psize;
+ l->flags = h->flags & P_TYPE;
+
+ /* Fix up the previous pointer of the page after the split page. */
+ if (h->nextpg != P_INVALID) {
+ if ((tp = mpool_get(t->bt_mp, h->nextpg, 0)) == NULL) {
+ free(l);
+ /* XXX mpool_free(t->bt_mp, r->pgno); */
+ return (NULL);
+ }
+ tp->prevpg = r->pgno;
+ mpool_put(t->bt_mp, tp, MPOOL_DIRTY);
+ }
+
+ /*
+ * Split right. The key/data pairs aren't sorted in the btree page so
+ * it's simpler to copy the data from the split page onto two new pages
+ * instead of copying half the data to the right page and compacting
+ * the left page in place. Since the left page can't change, we have
+ * to swap the original and the allocated left page after the split.
+ */
+ tp = bt_psplit(t, h, l, r, skip, ilen);
+
+ /* Move the new left page onto the old left page. */
+ memmove(h, l, t->bt_psize);
+ if (tp == l)
+ tp = h;
+ free(l);
+
+ *lp = h;
+ *rp = r;
+ return (tp);
+}
+
+/*
+ * BT_ROOT -- Split the root page of a btree.
+ *
+ * Parameters:
+ * t: tree
+ * h: root page
+ * lp: pointer to left page pointer
+ * rp: pointer to right page pointer
+ * skip: pointer to index to leave open
+ * ilen: insert length
+ *
+ * Returns:
+ * Pointer to page in which to insert or NULL on error.
+ */
+static PAGE *
+bt_root(t, h, lp, rp, skip, ilen)
+ BTREE *t;
+ PAGE *h, **lp, **rp;
+ indx_t *skip;
+ size_t ilen;
+{
+ PAGE *l, *r, *tp;
+ pgno_t lnpg, rnpg;
+
+#ifdef STATISTICS
+ ++bt_split;
+ ++bt_rootsplit;
+#endif
+ /* Put the new left and right pages for the split into place. */
+ if ((l = __bt_new(t, &lnpg)) == NULL ||
+ (r = __bt_new(t, &rnpg)) == NULL)
+ return (NULL);
+ l->pgno = lnpg;
+ r->pgno = rnpg;
+ l->nextpg = r->pgno;
+ r->prevpg = l->pgno;
+ l->prevpg = r->nextpg = P_INVALID;
+ l->lower = r->lower = BTDATAOFF;
+ l->upper = r->upper = t->bt_psize;
+ l->flags = r->flags = h->flags & P_TYPE;
+
+ /* Split the root page. */
+ tp = bt_psplit(t, h, l, r, skip, ilen);
+
+ *lp = l;
+ *rp = r;
+ return (tp);
+}
+
+/*
+ * BT_RROOT -- Fix up the recno root page after it has been split.
+ *
+ * Parameters:
+ * t: tree
+ * h: root page
+ * l: left page
+ * r: right page
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS
+ */
+static int
+bt_rroot(t, h, l, r)
+ BTREE *t;
+ PAGE *h, *l, *r;
+{
+ char *dest;
+
+ /* Insert the left and right keys, set the header information. */
+ h->linp[0] = h->upper = t->bt_psize - NRINTERNAL;
+ dest = (char *)h + h->upper;
+ WR_RINTERNAL(dest,
+ l->flags & P_RLEAF ? NEXTINDEX(l) : rec_total(l), l->pgno);
+
+ h->linp[1] = h->upper -= NRINTERNAL;
+ dest = (char *)h + h->upper;
+ WR_RINTERNAL(dest,
+ r->flags & P_RLEAF ? NEXTINDEX(r) : rec_total(r), r->pgno);
+
+ h->lower = BTDATAOFF + 2 * sizeof(indx_t);
+
+ /* Unpin the root page, set to recno internal page. */
+ h->flags &= ~P_TYPE;
+ h->flags |= P_RINTERNAL;
+ mpool_put(t->bt_mp, h, MPOOL_DIRTY);
+
+ return (RET_SUCCESS);
+}
+
+/*
+ * BT_BROOT -- Fix up the btree root page after it has been split.
+ *
+ * Parameters:
+ * t: tree
+ * h: root page
+ * l: left page
+ * r: right page
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS
+ */
+static int
+bt_broot(t, h, l, r)
+ BTREE *t;
+ PAGE *h, *l, *r;
+{
+ BINTERNAL *bi;
+ BLEAF *bl;
+ u_int32_t nbytes;
+ char *dest;
+
+ /*
+ * If the root page was a leaf page, change it into an internal page.
+ * We copy the key we split on (but not the key's data, in the case of
+ * a leaf page) to the new root page.
+ *
+ * The btree comparison code guarantees that the left-most key on any
+ * level of the tree is never used, so it doesn't need to be filled in.
+ */
+ nbytes = NBINTERNAL(0);
+ h->linp[0] = h->upper = t->bt_psize - nbytes;
+ dest = (char *)h + h->upper;
+ WR_BINTERNAL(dest, 0, l->pgno, 0);
+
+ switch (h->flags & P_TYPE) {
+ case P_BLEAF:
+ bl = GETBLEAF(r, 0);
+ nbytes = NBINTERNAL(bl->ksize);
+ h->linp[1] = h->upper -= nbytes;
+ dest = (char *)h + h->upper;
+ WR_BINTERNAL(dest, bl->ksize, r->pgno, 0);
+ memmove(dest, bl->bytes, bl->ksize);
+
+ /*
+ * If the key is on an overflow page, mark the overflow chain
+ * so it isn't deleted when the leaf copy of the key is deleted.
+ */
+ if (bl->flags & P_BIGKEY &&
+ bt_preserve(t, *(pgno_t *)bl->bytes) == RET_ERROR)
+ return (RET_ERROR);
+ break;
+ case P_BINTERNAL:
+ bi = GETBINTERNAL(r, 0);
+ nbytes = NBINTERNAL(bi->ksize);
+ h->linp[1] = h->upper -= nbytes;
+ dest = (char *)h + h->upper;
+ memmove(dest, bi, nbytes);
+ ((BINTERNAL *)dest)->pgno = r->pgno;
+ break;
+ default:
+ abort();
+ }
+
+ /* There are two keys on the page. */
+ h->lower = BTDATAOFF + 2 * sizeof(indx_t);
+
+ /* Unpin the root page, set to btree internal page. */
+ h->flags &= ~P_TYPE;
+ h->flags |= P_BINTERNAL;
+ mpool_put(t->bt_mp, h, MPOOL_DIRTY);
+
+ return (RET_SUCCESS);
+}
+
+/*
+ * BT_PSPLIT -- Do the real work of splitting the page.
+ *
+ * Parameters:
+ * t: tree
+ * h: page to be split
+ * l: page to put lower half of data
+ * r: page to put upper half of data
+ * pskip: pointer to index to leave open
+ * ilen: insert length
+ *
+ * Returns:
+ * Pointer to page in which to insert.
+ */
+static PAGE *
+bt_psplit(t, h, l, r, pskip, ilen)
+ BTREE *t;
+ PAGE *h, *l, *r;
+ indx_t *pskip;
+ size_t ilen;
+{
+ BINTERNAL *bi;
+ BLEAF *bl;
+ CURSOR *c;
+ RLEAF *rl;
+ PAGE *rval;
+ void *src;
+ indx_t full, half, nxt, off, skip, top, used;
+ u_int32_t nbytes;
+ int bigkeycnt, isbigkey;
+
+ /*
+ * Split the data to the left and right pages. Leave the skip index
+ * open. Additionally, make some effort not to split on an overflow
+ * key. This makes internal page processing faster and can save
+ * space as overflow keys used by internal pages are never deleted.
+ */
+ bigkeycnt = 0;
+ skip = *pskip;
+ full = t->bt_psize - BTDATAOFF;
+ half = full / 2;
+ used = 0;
+ for (nxt = off = 0, top = NEXTINDEX(h); nxt < top; ++off) {
+ if (skip == off) {
+ nbytes = ilen;
+ isbigkey = 0; /* XXX: not really known. */
+ } else
+ switch (h->flags & P_TYPE) {
+ case P_BINTERNAL:
+ src = bi = GETBINTERNAL(h, nxt);
+ nbytes = NBINTERNAL(bi->ksize);
+ isbigkey = bi->flags & P_BIGKEY;
+ break;
+ case P_BLEAF:
+ src = bl = GETBLEAF(h, nxt);
+ nbytes = NBLEAF(bl);
+ isbigkey = bl->flags & P_BIGKEY;
+ break;
+ case P_RINTERNAL:
+ src = GETRINTERNAL(h, nxt);
+ nbytes = NRINTERNAL;
+ isbigkey = 0;
+ break;
+ case P_RLEAF:
+ src = rl = GETRLEAF(h, nxt);
+ nbytes = NRLEAF(rl);
+ isbigkey = 0;
+ break;
+ default:
+ abort();
+ }
+
+ /*
+ * If the key/data pairs are substantial fractions of the max
+ * possible size for the page, it's possible to get situations
+ * where we decide to try and copy too much onto the left page.
+ * Make sure that doesn't happen.
+ */
+ if (skip <= off && used + nbytes >= full) {
+ --off;
+ break;
+ }
+
+ /* Copy the key/data pair, if not the skipped index. */
+ if (skip != off) {
+ ++nxt;
+
+ l->linp[off] = l->upper -= nbytes;
+ memmove((char *)l + l->upper, src, nbytes);
+ }
+
+ used += nbytes;
+ if (used >= half) {
+ if (!isbigkey || bigkeycnt == 3)
+ break;
+ else
+ ++bigkeycnt;
+ }
+ }
+
+ /*
+ * Off is the last offset that's valid for the left page.
+ * Nxt is the first offset to be placed on the right page.
+ */
+ l->lower += (off + 1) * sizeof(indx_t);
+
+ /*
+ * If splitting the page that the cursor was on, the cursor has to be
+ * adjusted to point to the same record as before the split. If the
+ * cursor is at or past the skipped slot, the cursor is incremented by
+ * one. If the cursor is on the right page, it is decremented by the
+ * number of records split to the left page.
+ */
+ c = &t->bt_cursor;
+ if (F_ISSET(c, CURS_INIT) && c->pg.pgno == h->pgno) {
+ if (c->pg.index >= skip)
+ ++c->pg.index;
+ if (c->pg.index < nxt) /* Left page. */
+ c->pg.pgno = l->pgno;
+ else { /* Right page. */
+ c->pg.pgno = r->pgno;
+ c->pg.index -= nxt;
+ }
+ }
+
+ /*
+ * If the skipped index was on the left page, just return that page.
+ * Otherwise, adjust the skip index to reflect the new position on
+ * the right page.
+ */
+ if (skip <= off) {
+ skip = 0;
+ rval = l;
+ } else {
+ rval = r;
+ *pskip -= nxt;
+ }
+
+ for (off = 0; nxt < top; ++off) {
+ if (skip == nxt) {
+ ++off;
+ skip = 0;
+ }
+ switch (h->flags & P_TYPE) {
+ case P_BINTERNAL:
+ src = bi = GETBINTERNAL(h, nxt);
+ nbytes = NBINTERNAL(bi->ksize);
+ break;
+ case P_BLEAF:
+ src = bl = GETBLEAF(h, nxt);
+ nbytes = NBLEAF(bl);
+ break;
+ case P_RINTERNAL:
+ src = GETRINTERNAL(h, nxt);
+ nbytes = NRINTERNAL;
+ break;
+ case P_RLEAF:
+ src = rl = GETRLEAF(h, nxt);
+ nbytes = NRLEAF(rl);
+ break;
+ default:
+ abort();
+ }
+ ++nxt;
+ r->linp[off] = r->upper -= nbytes;
+ memmove((char *)r + r->upper, src, nbytes);
+ }
+ r->lower += off * sizeof(indx_t);
+
+ /* If the key is being appended to the page, adjust the index. */
+ if (skip == top)
+ r->lower += sizeof(indx_t);
+
+ return (rval);
+}
+
+/*
+ * BT_PRESERVE -- Mark a chain of pages as used by an internal node.
+ *
+ * Chains of indirect blocks pointed to by leaf nodes get reclaimed when the
+ * record that references them gets deleted. Chains pointed to by internal
+ * pages never get deleted. This routine marks a chain as pointed to by an
+ * internal page.
+ *
+ * Parameters:
+ * t: tree
+ * pg: page number of first page in the chain.
+ *
+ * Returns:
+ * RET_SUCCESS, RET_ERROR.
+ */
+static int
+bt_preserve(t, pg)
+ BTREE *t;
+ pgno_t pg;
+{
+ PAGE *h;
+
+ if ((h = mpool_get(t->bt_mp, pg, 0)) == NULL)
+ return (RET_ERROR);
+ h->flags |= P_PRESERVE;
+ mpool_put(t->bt_mp, h, MPOOL_DIRTY);
+ return (RET_SUCCESS);
+}
+
+/*
+ * REC_TOTAL -- Return the number of recno entries below a page.
+ *
+ * Parameters:
+ * h: page
+ *
+ * Returns:
+ * The number of recno entries below a page.
+ *
+ * XXX
+ * These values could be set by the bt_psplit routine. The problem is that the
+ * entry has to be popped off of the stack etc. or the values have to be passed
+ * all the way back to bt_split/bt_rroot and it's not very clean.
+ */
+static recno_t
+rec_total(h)
+ PAGE *h;
+{
+ recno_t recs;
+ indx_t nxt, top;
+
+ for (recs = 0, nxt = 0, top = NEXTINDEX(h); nxt < top; ++nxt)
+ recs += GETRINTERNAL(h, nxt)->nrecs;
+ return (recs);
+}
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Mike Olson.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)bt_utils.c 8.8 (Berkeley) 7/20/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <db.h>
+#include "btree.h"
+
+/*
+ * __bt_ret --
+ * Build return key/data pair.
+ *
+ * Parameters:
+ * t: tree
+ * e: key/data pair to be returned
+ * key: user's key structure (NULL if not to be filled in)
+ * rkey: memory area to hold key
+ * data: user's data structure (NULL if not to be filled in)
+ * rdata: memory area to hold data
+ * copy: always copy the key/data item
+ *
+ * Returns:
+ * RET_SUCCESS, RET_ERROR.
+ */
+int
+__bt_ret(t, e, key, rkey, data, rdata, copy)
+ BTREE *t;
+ EPG *e;
+ DBT *key, *rkey, *data, *rdata;
+ int copy;
+{
+ BLEAF *bl;
+ void *p;
+
+ bl = GETBLEAF(e->page, e->index);
+
+ /*
+ * We must copy big keys/data to make them contigous. Otherwise,
+ * leave the page pinned and don't copy unless the user specified
+ * concurrent access.
+ */
+ if (key == NULL)
+ goto dataonly;
+
+ if (bl->flags & P_BIGKEY) {
+ if (__ovfl_get(t, bl->bytes,
+ &key->size, &rkey->data, &rkey->size))
+ return (RET_ERROR);
+ key->data = rkey->data;
+ } else if (copy || F_ISSET(t, B_DB_LOCK)) {
+ if (bl->ksize > rkey->size) {
+ p = (void *)(rkey->data == NULL ?
+ malloc(bl->ksize) : realloc(rkey->data, bl->ksize));
+ if (p == NULL)
+ return (RET_ERROR);
+ rkey->data = p;
+ rkey->size = bl->ksize;
+ }
+ memmove(rkey->data, bl->bytes, bl->ksize);
+ key->size = bl->ksize;
+ key->data = rkey->data;
+ } else {
+ key->size = bl->ksize;
+ key->data = bl->bytes;
+ }
+
+dataonly:
+ if (data == NULL)
+ return (RET_SUCCESS);
+
+ if (bl->flags & P_BIGDATA) {
+ if (__ovfl_get(t, bl->bytes + bl->ksize,
+ &data->size, &rdata->data, &rdata->size))
+ return (RET_ERROR);
+ data->data = rdata->data;
+ } else if (copy || F_ISSET(t, B_DB_LOCK)) {
+ /* Use +1 in case the first record retrieved is 0 length. */
+ if (bl->dsize + 1 > rdata->size) {
+ p = (void *)(rdata->data == NULL ?
+ malloc(bl->dsize + 1) :
+ realloc(rdata->data, bl->dsize + 1));
+ if (p == NULL)
+ return (RET_ERROR);
+ rdata->data = p;
+ rdata->size = bl->dsize + 1;
+ }
+ memmove(rdata->data, bl->bytes + bl->ksize, bl->dsize);
+ data->size = bl->dsize;
+ data->data = rdata->data;
+ } else {
+ data->size = bl->dsize;
+ data->data = bl->bytes + bl->ksize;
+ }
+
+ return (RET_SUCCESS);
+}
+
+/*
+ * __BT_CMP -- Compare a key to a given record.
+ *
+ * Parameters:
+ * t: tree
+ * k1: DBT pointer of first arg to comparison
+ * e: pointer to EPG for comparison
+ *
+ * Returns:
+ * < 0 if k1 is < record
+ * = 0 if k1 is = record
+ * > 0 if k1 is > record
+ */
+int
+__bt_cmp(t, k1, e)
+ BTREE *t;
+ const DBT *k1;
+ EPG *e;
+{
+ BINTERNAL *bi;
+ BLEAF *bl;
+ DBT k2;
+ PAGE *h;
+ void *bigkey;
+
+ /*
+ * The left-most key on internal pages, at any level of the tree, is
+ * guaranteed by the following code to be less than any user key.
+ * This saves us from having to update the leftmost key on an internal
+ * page when the user inserts a new key in the tree smaller than
+ * anything we've yet seen.
+ */
+ h = e->page;
+ if (e->index == 0 && h->prevpg == P_INVALID && !(h->flags & P_BLEAF))
+ return (1);
+
+ bigkey = NULL;
+ if (h->flags & P_BLEAF) {
+ bl = GETBLEAF(h, e->index);
+ if (bl->flags & P_BIGKEY)
+ bigkey = bl->bytes;
+ else {
+ k2.data = bl->bytes;
+ k2.size = bl->ksize;
+ }
+ } else {
+ bi = GETBINTERNAL(h, e->index);
+ if (bi->flags & P_BIGKEY)
+ bigkey = bi->bytes;
+ else {
+ k2.data = bi->bytes;
+ k2.size = bi->ksize;
+ }
+ }
+
+ if (bigkey) {
+ if (__ovfl_get(t, bigkey,
+ &k2.size, &t->bt_rdata.data, &t->bt_rdata.size))
+ return (RET_ERROR);
+ k2.data = t->bt_rdata.data;
+ }
+ return ((*t->bt_cmp)(k1, &k2));
+}
+
+/*
+ * __BT_DEFCMP -- Default comparison routine.
+ *
+ * Parameters:
+ * a: DBT #1
+ * b: DBT #2
+ *
+ * Returns:
+ * < 0 if a is < b
+ * = 0 if a is = b
+ * > 0 if a is > b
+ */
+int
+__bt_defcmp(a, b)
+ const DBT *a, *b;
+{
+ register size_t len;
+ register u_char *p1, *p2;
+
+ /*
+ * XXX
+ * If a size_t doesn't fit in an int, this routine can lose.
+ * What we need is a integral type which is guaranteed to be
+ * larger than a size_t, and there is no such thing.
+ */
+ len = MIN(a->size, b->size);
+ for (p1 = a->data, p2 = b->data; len--; ++p1, ++p2)
+ if (*p1 != *p2)
+ return ((int)*p1 - (int)*p2);
+ return ((int)a->size - (int)b->size);
+}
+
+/*
+ * __BT_DEFPFX -- Default prefix routine.
+ *
+ * Parameters:
+ * a: DBT #1
+ * b: DBT #2
+ *
+ * Returns:
+ * Number of bytes needed to distinguish b from a.
+ */
+size_t
+__bt_defpfx(a, b)
+ const DBT *a, *b;
+{
+ register u_char *p1, *p2;
+ register size_t cnt, len;
+
+ cnt = 1;
+ len = MIN(a->size, b->size);
+ for (p1 = a->data, p2 = b->data; len--; ++p1, ++p2, ++cnt)
+ if (*p1 != *p2)
+ return (cnt);
+
+ /* a->size must be <= b->size, or they wouldn't be in this order. */
+ return (a->size < b->size ? a->size + 1 : a->size);
+}
--- /dev/null
+/*-
+ * Copyright (c) 1991, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Mike Olson.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)btree.h 8.11 (Berkeley) 8/17/94
+ */
+
+/* Macros to set/clear/test flags. */
+#define F_SET(p, f) (p)->flags |= (f)
+#define F_CLR(p, f) (p)->flags &= ~(f)
+#define F_ISSET(p, f) ((p)->flags & (f))
+
+#include <mpool.h>
+
+#define DEFMINKEYPAGE (2) /* Minimum keys per page */
+#define MINCACHE (5) /* Minimum cached pages */
+#define MINPSIZE (512) /* Minimum page size */
+
+/*
+ * Page 0 of a btree file contains a copy of the meta-data. This page is also
+ * used as an out-of-band page, i.e. page pointers that point to nowhere point
+ * to page 0. Page 1 is the root of the btree.
+ */
+#define P_INVALID 0 /* Invalid tree page number. */
+#define P_META 0 /* Tree metadata page number. */
+#define P_ROOT 1 /* Tree root page number. */
+
+/*
+ * There are five page layouts in the btree: btree internal pages (BINTERNAL),
+ * btree leaf pages (BLEAF), recno internal pages (RINTERNAL), recno leaf pages
+ * (RLEAF) and overflow pages. All five page types have a page header (PAGE).
+ * This implementation requires that values within structures NOT be padded.
+ * (ANSI C permits random padding.) If your compiler pads randomly you'll have
+ * to do some work to get this package to run.
+ */
+typedef struct _page {
+ pgno_t pgno; /* this page's page number */
+ pgno_t prevpg; /* left sibling */
+ pgno_t nextpg; /* right sibling */
+
+#define P_BINTERNAL 0x01 /* btree internal page */
+#define P_BLEAF 0x02 /* leaf page */
+#define P_OVERFLOW 0x04 /* overflow page */
+#define P_RINTERNAL 0x08 /* recno internal page */
+#define P_RLEAF 0x10 /* leaf page */
+#define P_TYPE 0x1f /* type mask */
+#define P_PRESERVE 0x20 /* never delete this chain of pages */
+ u_int32_t flags;
+
+ indx_t lower; /* lower bound of free space on page */
+ indx_t upper; /* upper bound of free space on page */
+ indx_t linp[1]; /* indx_t-aligned VAR. LENGTH DATA */
+} PAGE;
+
+/* First and next index. */
+#define BTDATAOFF \
+ (sizeof(pgno_t) + sizeof(pgno_t) + sizeof(pgno_t) + \
+ sizeof(u_int32_t) + sizeof(indx_t) + sizeof(indx_t))
+#define NEXTINDEX(p) (((p)->lower - BTDATAOFF) / sizeof(indx_t))
+
+/*
+ * For pages other than overflow pages, there is an array of offsets into the
+ * rest of the page immediately following the page header. Each offset is to
+ * an item which is unique to the type of page. The h_lower offset is just
+ * past the last filled-in index. The h_upper offset is the first item on the
+ * page. Offsets are from the beginning of the page.
+ *
+ * If an item is too big to store on a single page, a flag is set and the item
+ * is a { page, size } pair such that the page is the first page of an overflow
+ * chain with size bytes of item. Overflow pages are simply bytes without any
+ * external structure.
+ *
+ * The page number and size fields in the items are pgno_t-aligned so they can
+ * be manipulated without copying. (This presumes that 32 bit items can be
+ * manipulated on this system.)
+ */
+#define LALIGN(n) (((n) + sizeof(pgno_t) - 1) & ~(sizeof(pgno_t) - 1))
+#define NOVFLSIZE (sizeof(pgno_t) + sizeof(u_int32_t))
+
+/*
+ * For the btree internal pages, the item is a key. BINTERNALs are {key, pgno}
+ * pairs, such that the key compares less than or equal to all of the records
+ * on that page. For a tree without duplicate keys, an internal page with two
+ * consecutive keys, a and b, will have all records greater than or equal to a
+ * and less than b stored on the page associated with a. Duplicate keys are
+ * somewhat special and can cause duplicate internal and leaf page records and
+ * some minor modifications of the above rule.
+ */
+typedef struct _binternal {
+ u_int32_t ksize; /* key size */
+ pgno_t pgno; /* page number stored on */
+#define P_BIGDATA 0x01 /* overflow data */
+#define P_BIGKEY 0x02 /* overflow key */
+ u_char flags;
+ char bytes[1]; /* data */
+} BINTERNAL;
+
+/* Get the page's BINTERNAL structure at index indx. */
+#define GETBINTERNAL(pg, indx) \
+ ((BINTERNAL *)((char *)(pg) + (pg)->linp[indx]))
+
+/* Get the number of bytes in the entry. */
+#define NBINTERNAL(len) \
+ LALIGN(sizeof(u_int32_t) + sizeof(pgno_t) + sizeof(u_char) + (len))
+
+/* Copy a BINTERNAL entry to the page. */
+#define WR_BINTERNAL(p, size, pgno, flags) { \
+ *(u_int32_t *)p = size; \
+ p += sizeof(u_int32_t); \
+ *(pgno_t *)p = pgno; \
+ p += sizeof(pgno_t); \
+ *(u_char *)p = flags; \
+ p += sizeof(u_char); \
+}
+
+/*
+ * For the recno internal pages, the item is a page number with the number of
+ * keys found on that page and below.
+ */
+typedef struct _rinternal {
+ recno_t nrecs; /* number of records */
+ pgno_t pgno; /* page number stored below */
+} RINTERNAL;
+
+/* Get the page's RINTERNAL structure at index indx. */
+#define GETRINTERNAL(pg, indx) \
+ ((RINTERNAL *)((char *)(pg) + (pg)->linp[indx]))
+
+/* Get the number of bytes in the entry. */
+#define NRINTERNAL \
+ LALIGN(sizeof(recno_t) + sizeof(pgno_t))
+
+/* Copy a RINTERAL entry to the page. */
+#define WR_RINTERNAL(p, nrecs, pgno) { \
+ *(recno_t *)p = nrecs; \
+ p += sizeof(recno_t); \
+ *(pgno_t *)p = pgno; \
+}
+
+/* For the btree leaf pages, the item is a key and data pair. */
+typedef struct _bleaf {
+ u_int32_t ksize; /* size of key */
+ u_int32_t dsize; /* size of data */
+ u_char flags; /* P_BIGDATA, P_BIGKEY */
+ char bytes[1]; /* data */
+} BLEAF;
+
+/* Get the page's BLEAF structure at index indx. */
+#define GETBLEAF(pg, indx) \
+ ((BLEAF *)((char *)(pg) + (pg)->linp[indx]))
+
+/* Get the number of bytes in the entry. */
+#define NBLEAF(p) NBLEAFDBT((p)->ksize, (p)->dsize)
+
+/* Get the number of bytes in the user's key/data pair. */
+#define NBLEAFDBT(ksize, dsize) \
+ LALIGN(sizeof(u_int32_t) + sizeof(u_int32_t) + sizeof(u_char) + \
+ (ksize) + (dsize))
+
+/* Copy a BLEAF entry to the page. */
+#define WR_BLEAF(p, key, data, flags) { \
+ *(u_int32_t *)p = key->size; \
+ p += sizeof(u_int32_t); \
+ *(u_int32_t *)p = data->size; \
+ p += sizeof(u_int32_t); \
+ *(u_char *)p = flags; \
+ p += sizeof(u_char); \
+ memmove(p, key->data, key->size); \
+ p += key->size; \
+ memmove(p, data->data, data->size); \
+}
+
+/* For the recno leaf pages, the item is a data entry. */
+typedef struct _rleaf {
+ u_int32_t dsize; /* size of data */
+ u_char flags; /* P_BIGDATA */
+ char bytes[1];
+} RLEAF;
+
+/* Get the page's RLEAF structure at index indx. */
+#define GETRLEAF(pg, indx) \
+ ((RLEAF *)((char *)(pg) + (pg)->linp[indx]))
+
+/* Get the number of bytes in the entry. */
+#define NRLEAF(p) NRLEAFDBT((p)->dsize)
+
+/* Get the number of bytes from the user's data. */
+#define NRLEAFDBT(dsize) \
+ LALIGN(sizeof(u_int32_t) + sizeof(u_char) + (dsize))
+
+/* Copy a RLEAF entry to the page. */
+#define WR_RLEAF(p, data, flags) { \
+ *(u_int32_t *)p = data->size; \
+ p += sizeof(u_int32_t); \
+ *(u_char *)p = flags; \
+ p += sizeof(u_char); \
+ memmove(p, data->data, data->size); \
+}
+
+/*
+ * A record in the tree is either a pointer to a page and an index in the page
+ * or a page number and an index. These structures are used as a cursor, stack
+ * entry and search returns as well as to pass records to other routines.
+ *
+ * One comment about searches. Internal page searches must find the largest
+ * record less than key in the tree so that descents work. Leaf page searches
+ * must find the smallest record greater than key so that the returned index
+ * is the record's correct position for insertion.
+ */
+typedef struct _epgno {
+ pgno_t pgno; /* the page number */
+ indx_t index; /* the index on the page */
+} EPGNO;
+
+typedef struct _epg {
+ PAGE *page; /* the (pinned) page */
+ indx_t index; /* the index on the page */
+} EPG;
+
+/*
+ * About cursors. The cursor (and the page that contained the key/data pair
+ * that it referenced) can be deleted, which makes things a bit tricky. If
+ * there are no duplicates of the cursor key in the tree (i.e. B_NODUPS is set
+ * or there simply aren't any duplicates of the key) we copy the key that it
+ * referenced when it's deleted, and reacquire a new cursor key if the cursor
+ * is used again. If there are duplicates keys, we move to the next/previous
+ * key, and set a flag so that we know what happened. NOTE: if duplicate (to
+ * the cursor) keys are added to the tree during this process, it is undefined
+ * if they will be returned or not in a cursor scan.
+ *
+ * The flags determine the possible states of the cursor:
+ *
+ * CURS_INIT The cursor references *something*.
+ * CURS_ACQUIRE The cursor was deleted, and a key has been saved so that
+ * we can reacquire the right position in the tree.
+ * CURS_AFTER, CURS_BEFORE
+ * The cursor was deleted, and now references a key/data pair
+ * that has not yet been returned, either before or after the
+ * deleted key/data pair.
+ * XXX
+ * This structure is broken out so that we can eventually offer multiple
+ * cursors as part of the DB interface.
+ */
+typedef struct _cursor {
+ EPGNO pg; /* B: Saved tree reference. */
+ DBT key; /* B: Saved key, or key.data == NULL. */
+ recno_t rcursor; /* R: recno cursor (1-based) */
+
+#define CURS_ACQUIRE 0x01 /* B: Cursor needs to be reacquired. */
+#define CURS_AFTER 0x02 /* B: Unreturned cursor after key. */
+#define CURS_BEFORE 0x04 /* B: Unreturned cursor before key. */
+#define CURS_INIT 0x08 /* RB: Cursor initialized. */
+ u_int8_t flags;
+} CURSOR;
+
+/*
+ * The metadata of the tree. The nrecs field is used only by the RECNO code.
+ * This is because the btree doesn't really need it and it requires that every
+ * put or delete call modify the metadata.
+ */
+typedef struct _btmeta {
+ u_int32_t magic; /* magic number */
+ u_int32_t version; /* version */
+ u_int32_t psize; /* page size */
+ u_int32_t free; /* page number of first free page */
+ u_int32_t nrecs; /* R: number of records */
+
+#define SAVEMETA (B_NODUPS | R_RECNO)
+ u_int32_t flags; /* bt_flags & SAVEMETA */
+} BTMETA;
+
+/* The in-memory btree/recno data structure. */
+typedef struct _btree {
+ MPOOL *bt_mp; /* memory pool cookie */
+
+ DB *bt_dbp; /* pointer to enclosing DB */
+
+ EPG bt_cur; /* current (pinned) page */
+ PAGE *bt_pinned; /* page pinned across calls */
+
+ CURSOR bt_cursor; /* cursor */
+
+#define BT_PUSH(t, p, i) { \
+ t->bt_sp->pgno = p; \
+ t->bt_sp->index = i; \
+ ++t->bt_sp; \
+}
+#define BT_POP(t) (t->bt_sp == t->bt_stack ? NULL : --t->bt_sp)
+#define BT_CLR(t) (t->bt_sp = t->bt_stack)
+ EPGNO bt_stack[50]; /* stack of parent pages */
+ EPGNO *bt_sp; /* current stack pointer */
+
+ DBT bt_rkey; /* returned key */
+ DBT bt_rdata; /* returned data */
+
+ int bt_fd; /* tree file descriptor */
+
+ pgno_t bt_free; /* next free page */
+ u_int32_t bt_psize; /* page size */
+ indx_t bt_ovflsize; /* cut-off for key/data overflow */
+ int bt_lorder; /* byte order */
+ /* sorted order */
+ enum { NOT, BACK, FORWARD } bt_order;
+ EPGNO bt_last; /* last insert */
+
+ /* B: key comparison function */
+ int (*bt_cmp) __P((const DBT *, const DBT *));
+ /* B: prefix comparison function */
+ size_t (*bt_pfx) __P((const DBT *, const DBT *));
+ /* R: recno input function */
+ int (*bt_irec) __P((struct _btree *, recno_t));
+
+ FILE *bt_rfp; /* R: record FILE pointer */
+ int bt_rfd; /* R: record file descriptor */
+
+ caddr_t bt_cmap; /* R: current point in mapped space */
+ caddr_t bt_smap; /* R: start of mapped space */
+ caddr_t bt_emap; /* R: end of mapped space */
+ size_t bt_msize; /* R: size of mapped region. */
+
+ recno_t bt_nrecs; /* R: number of records */
+ size_t bt_reclen; /* R: fixed record length */
+ u_char bt_bval; /* R: delimiting byte/pad character */
+
+/*
+ * NB:
+ * B_NODUPS and R_RECNO are stored on disk, and may not be changed.
+ */
+#define B_INMEM 0x00001 /* in-memory tree */
+#define B_METADIRTY 0x00002 /* need to write metadata */
+#define B_MODIFIED 0x00004 /* tree modified */
+#define B_NEEDSWAP 0x00008 /* if byte order requires swapping */
+#define B_RDONLY 0x00010 /* read-only tree */
+
+#define B_NODUPS 0x00020 /* no duplicate keys permitted */
+#define R_RECNO 0x00080 /* record oriented tree */
+
+#define R_CLOSEFP 0x00040 /* opened a file pointer */
+#define R_EOF 0x00100 /* end of input file reached. */
+#define R_FIXLEN 0x00200 /* fixed length records */
+#define R_MEMMAPPED 0x00400 /* memory mapped file. */
+#define R_INMEM 0x00800 /* in-memory file */
+#define R_MODIFIED 0x01000 /* modified file */
+#define R_RDONLY 0x02000 /* read-only file */
+
+#define B_DB_LOCK 0x04000 /* DB_LOCK specified. */
+#define B_DB_SHMEM 0x08000 /* DB_SHMEM specified. */
+#define B_DB_TXN 0x10000 /* DB_TXN specified. */
+ u_int32_t flags;
+} BTREE;
+
+#include "extern.h"
--- /dev/null
+/*-
+ * Copyright (c) 1991, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)extern.h 8.10 (Berkeley) 7/20/94
+ */
+
+int __bt_close __P((DB *));
+int __bt_cmp __P((BTREE *, const DBT *, EPG *));
+int __bt_crsrdel __P((BTREE *, EPGNO *));
+int __bt_defcmp __P((const DBT *, const DBT *));
+size_t __bt_defpfx __P((const DBT *, const DBT *));
+int __bt_delete __P((const DB *, const DBT *, u_int));
+int __bt_dleaf __P((BTREE *, const DBT *, PAGE *, u_int));
+int __bt_fd __P((const DB *));
+int __bt_free __P((BTREE *, PAGE *));
+int __bt_get __P((const DB *, const DBT *, DBT *, u_int));
+PAGE *__bt_new __P((BTREE *, pgno_t *));
+void __bt_pgin __P((void *, pgno_t, void *));
+void __bt_pgout __P((void *, pgno_t, void *));
+int __bt_push __P((BTREE *, pgno_t, int));
+int __bt_put __P((const DB *dbp, DBT *, const DBT *, u_int));
+int __bt_ret __P((BTREE *, EPG *, DBT *, DBT *, DBT *, DBT *, int));
+EPG *__bt_search __P((BTREE *, const DBT *, int *));
+int __bt_seq __P((const DB *, DBT *, DBT *, u_int));
+void __bt_setcur __P((BTREE *, pgno_t, u_int));
+int __bt_split __P((BTREE *, PAGE *,
+ const DBT *, const DBT *, int, size_t, u_int32_t));
+int __bt_sync __P((const DB *, u_int));
+
+int __ovfl_delete __P((BTREE *, void *));
+int __ovfl_get __P((BTREE *, void *, size_t *, void **, size_t *));
+int __ovfl_put __P((BTREE *, const DBT *, pgno_t *));
+
+#ifdef DEBUG
+void __bt_dnpage __P((DB *, pgno_t));
+void __bt_dpage __P((PAGE *));
+void __bt_dump __P((DB *));
+#endif
+#ifdef STATISTICS
+void __bt_stat __P((DB *));
+#endif
--- /dev/null
+../db/tags
\ No newline at end of file
--- /dev/null
+1.84 -> 1.85
+ recno: #ifdef out use of mmap, it's not portable enough.
+
+1.83 -> 1.84 Thu Aug 18 15:46:07 EDT 1994
+ recno: Rework fixed-length records so that closing and reopening
+ the file now works. Pad short records on input. Never do
+ signed comparison in recno input reading functions.
+
+1.82 -> 1.83 Tue Jul 26 15:33:44 EDT 1994
+ btree: Rework cursor deletion code yet again; bugs with
+ deleting empty pages that only contained the cursor
+ record.
+
+1.81 -> 1.82 Sat Jul 16 11:01:50 EDT 1994
+ btree: Fix bugs introduced by new cursor/deletion code.
+ Replace return kbuf/dbuf with real DBT's.
+
+1.80 -> 1.81
+ btree: Fix bugs introduced by new cursor/deletion code.
+ all: Add #defines for Purify.
+
+1.79 -> 1.80 Wed Jul 13 22:41:54 EDT 1994
+ btree Change deletion to coalesce empty pages. This is a major
+ change, cursors and duplicate pages all had to be reworked.
+ Return to a fixed stack.
+ recno: Affected by cursor changes. New cursor structures should
+ permit multiple cursors in the future.
+
+1.78 -> 1.79 Mon Jun 20 17:36:47 EDT 1994
+ all: Minor cleanups of 1.78 for porting reasons; only
+ major change was inlining check of NULL pointer
+ so that __fix_realloc goes away.
+
+1.77 -> 1.78 Thu Jun 16 19:06:43 EDT 1994
+ all: Move "standard" size typedef's into db.h.
+
+1.76 -> 1.77 Thu Jun 16 16:48:38 EDT 1994
+ hash: Delete __init_ routine, has special meaning to OSF 2.0.
+
+1.74 -> 1.76
+ all: Finish up the port to the Alpha.
+
+1.73 -> 1.74
+ recno: Don't put the record if rec_search fails, in rec_rdelete.
+ Create fixed-length intermediate records past "end" of DB
+ correctly.
+ Realloc bug when reading in fixed records.
+ all: First cut at port to Alpha (64-bit architecture) using
+ 4.4BSD basic integral types typedef's.
+ Cast allocation pointers to shut up old compilers.
+ Rework PORT directory into OS/machine directories.
+
+1.72 -> 1.73
+ btree: If enough duplicate records were inserted and then deleted
+ that internal pages had references to empty pages of the
+ duplicate keys, the search function ended up on the wrong
+ page.
+
+1.7 -> 1.72 12 Oct 1993
+ hash: Support NET/2 hash formats.
+
+1.7 -> 1.71 16 Sep 1993
+ btree/recno:
+ Fix bug in internal search routines that caused
+ return of invalid pointers.
+
+1.6 -> 1.7 07 Sep 1993
+ hash: Fixed big key overflow bugs.
+ test: Portability hacks, rewrite test script, Makefile.
+ btree/recno:
+ Stop copying non-overflow key/data pairs.
+ PORT: Break PORT directory up into per architecture/OS
+ subdirectories.
+
+1.5 -> 1.6 06 Jun 1993
+ hash: In PAIRFITS, the first comparison should look at (P)[2].
+ The hash_realloc function was walking off the end of memory.
+ The overflow page number was wrong when bumping splitpoint.
+
+1.4 -> 1.5 23 May 1993
+ hash: Set hash default fill factor dynamically.
+ recno: Fixed bug in sorted page splits.
+ Add page size parameter support.
+ Allow recno to specify the name of the underlying btree;
+ used for vi recovery.
+ btree/recno:
+ Support 64K pages.
+ btree/hash/recno:
+ Provide access to an underlying file descriptor.
+ Change sync routines to take a flag argument, recno
+ uses this to sync out the underlying btree.
+
+1.3 -> 1.4 10 May 1993
+ recno: Delete the R_CURSORLOG flag from the recno interface.
+ Zero-length record fix for non-mmap reads.
+ Try and make SIZE_T_MAX test in open portable.
+
+1.2 -> 1.3 01 May 1993
+ btree: Ignore user byte-order setting when reading already
+ existing database. Fixes to byte-order conversions.
+
+1.1 -> 1.2 15 Apr 1993
+ No bug fixes, only compatibility hacks.
--- /dev/null
+# @(#)Makefile.inc 8.1 (Berkeley) 6/4/93
+
+.PATH: ${.CURDIR}/db/db
+
+SRCS+= db.c
--- /dev/null
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)db.c 8.4 (Berkeley) 2/21/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stddef.h>
+#include <stdio.h>
+
+#include <db.h>
+
+DB *
+dbopen(fname, flags, mode, type, openinfo)
+ const char *fname;
+ int flags, mode;
+ DBTYPE type;
+ const void *openinfo;
+{
+
+#define DB_FLAGS (DB_LOCK | DB_SHMEM | DB_TXN)
+#define USE_OPEN_FLAGS \
+ (O_CREAT | O_EXCL | O_EXLOCK | O_NONBLOCK | O_RDONLY | \
+ O_RDWR | O_SHLOCK | O_TRUNC)
+
+ if ((flags & ~(USE_OPEN_FLAGS | DB_FLAGS)) == 0)
+ switch (type) {
+ case DB_BTREE:
+ return (__bt_open(fname, flags & USE_OPEN_FLAGS,
+ mode, openinfo, flags & DB_FLAGS));
+ case DB_HASH:
+ return (__hash_open(fname, flags & USE_OPEN_FLAGS,
+ mode, openinfo, flags & DB_FLAGS));
+ case DB_RECNO:
+ return (__rec_open(fname, flags & USE_OPEN_FLAGS,
+ mode, openinfo, flags & DB_FLAGS));
+ }
+ errno = EINVAL;
+ return (NULL);
+}
+
+static int
+__dberr()
+{
+ return (RET_ERROR);
+}
+
+/*
+ * __DBPANIC -- Stop.
+ *
+ * Parameters:
+ * dbp: pointer to the DB structure.
+ */
+void
+__dbpanic(dbp)
+ DB *dbp;
+{
+ /* The only thing that can succeed is a close. */
+ dbp->del = (int (*)())__dberr;
+ dbp->fd = (int (*)())__dberr;
+ dbp->get = (int (*)())__dberr;
+ dbp->put = (int (*)())__dberr;
+ dbp->seq = (int (*)())__dberr;
+ dbp->sync = (int (*)())__dberr;
+}
--- /dev/null
+BT_CLR ../btree/btree.h /^#define BT_CLR(t) (t->bt_sp = t->bt_stack)$/
+BT_POP ../btree/btree.h /^#define BT_POP(t) (t->bt_sp == t->bt_stack ? NULL /
+BT_PUSH ../btree/btree.h /^#define BT_PUSH(t, p, i) { \\$/
+BUCKET_TO_PAGE ../hash/hash.h /^#define BUCKET_TO_PAGE(B) \\$/
+BUF_INSERT ../hash/hash_buf.c /^#define BUF_INSERT(B, P) { \\$/
+BUF_REMOVE ../hash/hash_buf.c /^#define BUF_REMOVE(B) { \\$/
+CLRBIT ../hash/hash.h /^#define CLRBIT(A, N) ((A)[(N)\/BITS_PER_MAP] &= ~(/
+DODISK ../hash/hash.h /^#define DODISK(X) ((X) = (char *)((ptrdiff_t)(X)|0/
+DOMOD ../hash/hash.h /^#define DOMOD(X) ((X) = (char *)((ptrdiff_t)(X)|0x/
+FREESPACE ../hash/page.h /^#define FREESPACE(P) ((P)[(P)[0]+1])$/
+F_CLR ../btree/btree.h /^#define F_CLR(p, f) (p)->flags &= ~(f)$/
+F_ISSET ../btree/btree.h /^#define F_ISSET(p, f) ((p)->flags & (f))$/
+F_SET ../btree/btree.h /^#define F_SET(p, f) (p)->flags |= (f)$/
+GETBINTERNAL ../btree/btree.h /^#define GETBINTERNAL(pg, indx) \\$/
+GETBLEAF ../btree/btree.h /^#define GETBLEAF(pg, indx) \\$/
+GETRINTERNAL ../btree/btree.h /^#define GETRINTERNAL(pg, indx) \\$/
+GETRLEAF ../btree/btree.h /^#define GETRLEAF(pg, indx) \\$/
+HASHKEY ../include/mpool.h /^#define HASHKEY(pgno) ((pgno - 1) % HASHSIZE)$/
+ISDISK ../hash/hash.h /^#define ISDISK(X) ((u_int32_t)(ptrdiff_t)(X)&0x2)$/
+ISMOD ../hash/hash.h /^#define ISMOD(X) ((u_int32_t)(ptrdiff_t)(X)&0x1)$/
+ISSET ../hash/hash.h /^#define ISSET(A, N) ((A)[(N)\/BITS_PER_MAP] & (1<</
+IS_BUCKET ../hash/hash.h /^#define IS_BUCKET(X) ((X) & BUF_BUCKET)$/
+KEYSIZE ../hash/page.h /^#define KEYSIZE(K) (4*sizeof(u_int16_t) + (K)->siz/
+LALIGN ../btree/btree.h /^#define LALIGN(n) (((n) + sizeof(pgno_t) - 1) & ~(/
+LRU_INSERT ../hash/hash_buf.c /^#define LRU_INSERT(B) BUF_INSERT((B), LRU)$/
+MOD ../hash/hash.c /^#define MOD(x, y) ((x) & ((y) - 1))$/
+MRU_INSERT ../hash/hash_buf.c /^#define MRU_INSERT(B) BUF_INSERT((B), &hashp->bufh/
+M_16_SWAP ../include/db.h /^#define M_16_SWAP(a) { \\$/
+M_32_SWAP ../include/db.h /^#define M_32_SWAP(a) { \\$/
+NBINTERNAL ../btree/btree.h /^#define NBINTERNAL(len) \\$/
+NBLEAF ../btree/btree.h /^#define NBLEAF(p) NBLEAFDBT((p)->ksize, (p)->dsize/
+NBLEAFDBT ../btree/btree.h /^#define NBLEAFDBT(ksize, dsize) \\$/
+NEXTINDEX ../btree/btree.h /^#define NEXTINDEX(p) (((p)->lower - BTDATAOFF) \/ /
+NRLEAF ../btree/btree.h /^#define NRLEAF(p) NRLEAFDBT((p)->dsize)$/
+NRLEAFDBT ../btree/btree.h /^#define NRLEAFDBT(dsize) \\$/
+OADDR_OF ../hash/hash.h /^#define OADDR_OF(S,O) ((u_int32_t)((u_int32_t)(S) /
+OADDR_TO_PAGE ../hash/hash.h /^#define OADDR_TO_PAGE(B) \\$/
+OFFSET ../hash/page.h /^#define OFFSET(P) ((P)[(P)[0]+2])$/
+OPAGENUM ../hash/hash.h /^#define OPAGENUM(N) ((N) & SPLITMASK)$/
+PAGE_INIT ../hash/hash_page.c /^#define PAGE_INIT(P) { \\$/
+PAGE_META ../hash/page.h /^#define PAGE_META(N) (((N)+3) * sizeof(u_int16_t))/
+PAIRFITS ../hash/page.h /^#define PAIRFITS(P,K,D) \\$/
+PAIRSIZE ../hash/page.h /^#define PAIRSIZE(K,D) (2*sizeof(u_int16_t) + (K)->/
+PTROF ../hash/hash.h /^#define PTROF(X) ((BUFHEAD *)((ptrdiff_t)(X)&~0x3)/
+P_16_COPY ../include/db.h /^#define P_16_COPY(a, b) { \\$/
+P_16_SWAP ../include/db.h /^#define P_16_SWAP(a) { \\$/
+P_32_COPY ../include/db.h /^#define P_32_COPY(a, b) { \\$/
+P_32_SWAP ../include/db.h /^#define P_32_SWAP(a) { \\$/
+RETURN_ERROR ../hash/hash.c /^#define RETURN_ERROR(ERR, LOC) { save_errno = ERR;/
+SETBIT ../hash/hash.h /^#define SETBIT(A, N) ((A)[(N)\/BITS_PER_MAP] |= (1/
+SPLITNUM ../hash/hash.h /^#define SPLITNUM(N) (((u_int32_t)(N)) >> SPLITSHIF/
+WR_BINTERNAL ../btree/btree.h /^#define WR_BINTERNAL(p, size, pgno, flags) { \\/
+WR_BLEAF ../btree/btree.h /^#define WR_BLEAF(p, key, data, flags) { \\$/
+WR_RINTERNAL ../btree/btree.h /^#define WR_RINTERNAL(p, nrecs, pgno) { \\$/
+WR_RLEAF ../btree/btree.h /^#define WR_RLEAF(p, data, flags) { \\$/
+X ../btree/bt_debug.c /^#define X(flag, name) \\$/
+__add_ovflpage ../hash/hash_page.c /^__add_ovflpage(hashp, bufp)$/
+__addel ../hash/hash_page.c /^__addel(hashp, bufp, key, val)$/
+__big_delete ../hash/hash_bigkey.c /^__big_delete(hashp, bufp)$/
+__big_insert ../hash/hash_bigkey.c /^__big_insert(hashp, bufp, key, val)$/
+__big_keydata ../hash/hash_bigkey.c /^__big_keydata(hashp, bufp, key, val, set)$/
+__big_return ../hash/hash_bigkey.c /^__big_return(hashp, bufp, ndx, val, set_current)$/
+__big_split ../hash/hash_bigkey.c /^__big_split(hashp, op, np, big_keyp, addr, obucket/
+__bt_bdelete ../btree/bt_delete.c /^__bt_bdelete(t, key)$/
+__bt_close ../btree/bt_close.c /^__bt_close(dbp)$/
+__bt_cmp ../btree/bt_utils.c /^__bt_cmp(t, k1, e)$/
+__bt_curdel ../btree/bt_delete.c /^__bt_curdel(t, key, h, index)$/
+__bt_defcmp ../btree/bt_utils.c /^__bt_defcmp(a, b)$/
+__bt_defpfx ../btree/bt_utils.c /^__bt_defpfx(a, b)$/
+__bt_delete ../btree/bt_delete.c /^__bt_delete(dbp, key, flags)$/
+__bt_dleaf ../btree/bt_delete.c /^__bt_dleaf(t, key, h, index)$/
+__bt_dmpage ../btree/bt_debug.c /^__bt_dmpage(h)$/
+__bt_dnpage ../btree/bt_debug.c /^__bt_dnpage(dbp, pgno)$/
+__bt_dpage ../btree/bt_debug.c /^__bt_dpage(h)$/
+__bt_dump ../btree/bt_debug.c /^__bt_dump(dbp)$/
+__bt_fd ../btree/bt_open.c /^__bt_fd(dbp)$/
+__bt_first ../btree/bt_seq.c /^__bt_first(t, key, erval, exactp)$/
+__bt_free ../btree/bt_page.c /^__bt_free(t, h)$/
+__bt_get ../btree/bt_get.c /^__bt_get(dbp, key, data, flags)$/
+__bt_new ../btree/bt_page.c /^__bt_new(t, npg)$/
+__bt_open ../btree/bt_open.c /^__bt_open(fname, flags, mode, openinfo, dflags)$/
+__bt_pdelete ../btree/bt_delete.c /^__bt_pdelete(t, h)$/
+__bt_pgin ../btree/bt_conv.c /^__bt_pgin(t, pg, pp)$/
+__bt_pgout ../btree/bt_conv.c /^__bt_pgout(t, pg, pp)$/
+__bt_put ../btree/bt_put.c /^__bt_put(dbp, key, data, flags)$/
+__bt_relink ../btree/bt_delete.c /^__bt_relink(t, h)$/
+__bt_ret ../btree/bt_utils.c /^__bt_ret(t, e, key, rkey, data, rdata, copy)$/
+__bt_search ../btree/bt_search.c /^__bt_search(t, key, exactp)$/
+__bt_seq ../btree/bt_seq.c /^__bt_seq(dbp, key, data, flags)$/
+__bt_seqadv ../btree/bt_seq.c /^__bt_seqadv(t, ep, flags)$/
+__bt_seqset ../btree/bt_seq.c /^__bt_seqset(t, ep, key, flags)$/
+__bt_setcur ../btree/bt_seq.c /^__bt_setcur(t, pgno, index)$/
+__bt_snext ../btree/bt_search.c /^__bt_snext(t, h, key, exactp)$/
+__bt_split ../btree/bt_split.c /^__bt_split(t, sp, key, data, flags, ilen, argskip)/
+__bt_sprev ../btree/bt_search.c /^__bt_sprev(t, h, key, exactp)$/
+__bt_stat ../btree/bt_debug.c /^__bt_stat(dbp)$/
+__bt_stkacq ../btree/bt_delete.c /^__bt_stkacq(t, hp, c)$/
+__bt_sync ../btree/bt_close.c /^__bt_sync(dbp, flags)$/
+__buf_free ../hash/hash_buf.c /^__buf_free(hashp, do_free, to_disk)$/
+__buf_init ../hash/hash_buf.c /^__buf_init(hashp, nbytes)$/
+__call_hash ../hash/hash.c /^__call_hash(hashp, k, len)$/
+__dberr ../db/db.c /^__dberr()$/
+__dbpanic ../db/db.c /^__dbpanic(dbp)$/
+__delpair ../hash/hash_page.c /^__delpair(hashp, bufp, ndx)$/
+__expand_table ../hash/hash.c /^__expand_table(hashp)$/
+__find_bigpair ../hash/hash_bigkey.c /^__find_bigpair(hashp, bufp, ndx, key, size)$/
+__find_last_page ../hash/hash_bigkey.c /^__find_last_page(hashp, bpp)$/
+__free_ovflpage ../hash/hash_page.c /^__free_ovflpage(hashp, obufp)$/
+__get_buf ../hash/hash_buf.c /^__get_buf(hashp, addr, prev_bp, newpage)$/
+__get_page ../hash/hash_page.c /^__get_page(hashp, p, bucket, is_bucket, is_disk, i/
+__hash_open ../hash/hash.c /^__hash_open(file, flags, mode, info, dflags)$/
+__ibitmap ../hash/hash_page.c /^__ibitmap(hashp, pnum, nbits, ndx)$/
+__log2 ../hash/hash_log2.c /^__log2(num)$/
+__ovfl_delete ../btree/bt_overflow.c /^__ovfl_delete(t, p)$/
+__ovfl_get ../btree/bt_overflow.c /^__ovfl_get(t, p, ssz, buf, bufsz)$/
+__ovfl_put ../btree/bt_overflow.c /^__ovfl_put(t, dbt, pg)$/
+__put_page ../hash/hash_page.c /^__put_page(hashp, p, bucket, is_bucket, is_bitmap)/
+__rec_close ../recno/rec_close.c /^__rec_close(dbp)$/
+__rec_delete ../recno/rec_delete.c /^__rec_delete(dbp, key, flags)$/
+__rec_dleaf ../recno/rec_delete.c /^__rec_dleaf(t, h, index)$/
+__rec_fd ../recno/rec_open.c /^__rec_fd(dbp)$/
+__rec_fmap ../recno/rec_get.c /^__rec_fmap(t, top)$/
+__rec_fpipe ../recno/rec_get.c /^__rec_fpipe(t, top)$/
+__rec_get ../recno/rec_get.c /^__rec_get(dbp, key, data, flags)$/
+__rec_iput ../recno/rec_put.c /^__rec_iput(t, nrec, data, flags)$/
+__rec_open ../recno/rec_open.c /^__rec_open(fname, flags, mode, openinfo, dflags)$/
+__rec_put ../recno/rec_put.c /^__rec_put(dbp, key, data, flags)$/
+__rec_ret ../recno/rec_utils.c /^__rec_ret(t, e, nrec, key, data)$/
+__rec_search ../recno/rec_search.c /^__rec_search(t, recno, op)$/
+__rec_seq ../recno/rec_seq.c /^__rec_seq(dbp, key, data, flags)$/
+__rec_sync ../recno/rec_close.c /^__rec_sync(dbp, flags)$/
+__rec_vmap ../recno/rec_get.c /^__rec_vmap(t, top)$/
+__rec_vpipe ../recno/rec_get.c /^__rec_vpipe(t, top)$/
+__reclaim_buf ../hash/hash_buf.c /^__reclaim_buf(hashp, bp)$/
+__split_page ../hash/hash_page.c /^__split_page(hashp, obucket, nbucket)$/
+alloc_segs ../hash/hash.c /^alloc_segs(hashp, nsegs)$/
+bt_broot ../btree/bt_split.c /^bt_broot(t, h, l, r)$/
+bt_fast ../btree/bt_put.c /^bt_fast(t, key, data, exactp)$/
+bt_meta ../btree/bt_close.c /^bt_meta(t)$/
+bt_page ../btree/bt_split.c /^bt_page(t, h, lp, rp, skip, ilen)$/
+bt_preserve ../btree/bt_split.c /^bt_preserve(t, pg)$/
+bt_psplit ../btree/bt_split.c /^bt_psplit(t, h, l, r, pskip, ilen)$/
+bt_root ../btree/bt_split.c /^bt_root(t, h, lp, rp, skip, ilen)$/
+bt_rroot ../btree/bt_split.c /^bt_rroot(t, h, l, r)$/
+byteorder ../btree/bt_open.c /^byteorder()$/
+collect_data ../hash/hash_bigkey.c /^collect_data(hashp, bufp, len, set)$/
+collect_key ../hash/hash_bigkey.c /^collect_key(hashp, bufp, len, val, set)$/
+dbm_clearerr ../hash/ndbm.c /^dbm_clearerr(db)$/
+dbm_close ../hash/ndbm.c /^dbm_close(db)$/
+dbm_delete ../hash/ndbm.c /^dbm_delete(db, key)$/
+dbm_dirfno ../hash/ndbm.c /^dbm_dirfno(db)$/
+dbm_error ../hash/ndbm.c /^dbm_error(db)$/
+dbm_fetch ../hash/ndbm.c /^dbm_fetch(db, key)$/
+dbm_firstkey ../hash/ndbm.c /^dbm_firstkey(db)$/
+dbm_nextkey ../hash/ndbm.c /^dbm_nextkey(db)$/
+dbm_open ../hash/ndbm.c /^dbm_open(file, flags, mode)$/
+dbm_store ../hash/ndbm.c /^dbm_store(db, key, content, flags)$/
+dbopen ../db/db.c /^dbopen(fname, flags, mode, type, openinfo)$/
+dcharhash ../hash/hash_func.c /^#define dcharhash(h, c) ((h) = 0x63c63cd9*(h) + 0x/
+fetch_bitmap ../hash/hash_page.c /^fetch_bitmap(hashp, ndx)$/
+first_free ../hash/hash_page.c /^first_free(map)$/
+flush_meta ../hash/hash.c /^flush_meta(hashp)$/
+hash2 ../hash/hash_func.c /^hash2(keyarg, len)$/
+hash3 ../hash/hash_func.c /^hash3(keyarg, len)$/
+hash4 ../hash/hash_func.c /^hash4(keyarg, len)$/
+hash_access ../hash/hash.c /^hash_access(hashp, action, key, val)$/
+hash_close ../hash/hash.c /^hash_close(dbp)$/
+hash_delete ../hash/hash.c /^hash_delete(dbp, key, flag)$/
+hash_fd ../hash/hash.c /^hash_fd(dbp)$/
+hash_get ../hash/hash.c /^hash_get(dbp, key, data, flag)$/
+hash_put ../hash/hash.c /^hash_put(dbp, key, data, flag)$/
+hash_realloc ../hash/hash.c /^hash_realloc(p_ptr, oldsize, newsize)$/
+hash_seq ../hash/hash.c /^hash_seq(dbp, key, data, flag)$/
+hash_sync ../hash/hash.c /^hash_sync(dbp, flags)$/
+hcreate ../hash/hsearch.c /^hcreate(nel)$/
+hdestroy ../hash/hash.c /^hdestroy(hashp)$/
+hsearch ../hash/hsearch.c /^hsearch(item, action)$/
+init_hash ../hash/hash.c /^init_hash(hashp, file, info)$/
+init_htab ../hash/hash.c /^init_htab(hashp, nelem)$/
+mpool_bkt ../mpool/mpool.c /^mpool_bkt(mp)$/
+mpool_close ../mpool/mpool.c /^mpool_close(mp)$/
+mpool_filter ../mpool/mpool.c /^mpool_filter(mp, pgin, pgout, pgcookie)$/
+mpool_get ../mpool/mpool.c /^mpool_get(mp, pgno, flags)$/
+mpool_look ../mpool/mpool.c /^mpool_look(mp, pgno)$/
+mpool_new ../mpool/mpool.c /^mpool_new(mp, pgnoaddr)$/
+mpool_open ../mpool/mpool.c /^mpool_open(key, fd, pagesize, maxcache)$/
+mpool_put ../mpool/mpool.c /^mpool_put(mp, page, flags)$/
+mpool_stat ../mpool/mpool.c /^mpool_stat(mp)$/
+mpool_sync ../mpool/mpool.c /^mpool_sync(mp)$/
+mpool_write ../mpool/mpool.c /^mpool_write(mp, bp)$/
+mswap ../btree/bt_conv.c /^mswap(pg)$/
+newbuf ../hash/hash_buf.c /^newbuf(hashp, addr, prev_bp)$/
+nroot ../btree/bt_open.c /^nroot(t)$/
+open_temp ../hash/hash_page.c /^open_temp(hashp)$/
+overflow_page ../hash/hash_page.c /^overflow_page(hashp)$/
+print_chain ../hash/hash_page.c /^print_chain(addr)$/
+putpair ../hash/hash_page.c /^putpair(p, key, val)$/
+rec_rdelete ../recno/rec_delete.c /^rec_rdelete(t, nrec)$/
+rec_total ../btree/bt_split.c /^rec_total(h)$/
+squeeze_key ../hash/hash_page.c /^squeeze_key(sp, key, val)$/
+swap_header ../hash/hash.c /^swap_header(hashp)$/
+swap_header_copy ../hash/hash.c /^swap_header_copy(srcp, destp)$/
+tmp ../btree/bt_open.c /^tmp()$/
+u_int32_t ../hash/extern.h /^extern u_int32_t (*__default_hash) __P((const void/
+ugly_split ../hash/hash_page.c /^ugly_split(hashp, obucket, old_bufp, new_bufp, cop/
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+108 372 Q(The)108 388.8 Q F3(openinfo)2.85 E F0(ar)2.85 E .349(gument is a poi\
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+(aults appropriate for the system and the)-.1 F(access method.)108 412.8 Q F3
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+(returns a pointer to a DB structure on success and NULL on error)2.917 F 5.416
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+G(_int \215ags\);)318.92 501.6 Q(int \(*fd\)\(const DB *db\);)144 513.6 Q
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+144 537.6 Q -.15(ey)-.1 G 2.5(,c)-.5 G(onst DBT *data,)295.31 537.6 Q
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+G(BT *data, u_int \215ags\);)298.64 573.6 Q 2.5(}D)108 585.6 S(B;)122.52 585.6
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+(nd sometimes one or more pointers to k)323.196 614.4 R -.15(ey)-.1 G .538
+(/data struc-).15 F(tures and a \215ag v)108 626.4 Q(alue.)-.25 E 16.28
+(type The)108 643.2 R
+(type of the underlying access method \(and \214le format\).)2.5 E 12.95
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+-.15 G .989(ached information to disk, free an)293.968 660 R 3.489(ya)-.15 G
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+(close the underlying \214le\(s\).)144 672 R .111(Since k)5.112 F -.15(ey)-.1 G
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+(function may result in inconsistent or lost information.)2.994 F F3(Close)
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+(Delete the record referenced by the cursor)180 146.4 R 5.288(.T)-.55 G .288
+(he cursor must ha)363.342 146.4 R .588 -.15(ve p)-.2 H(re).15 E .288
+(viously been initial-)-.25 F(ized.)180 158.4 Q F1(Delete)144 175.2 Q F0 .03
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+(\), 0 on success, and 1 if the speci\214ed).18 F F1 -.1(ke)2.53 G(y)-.2 E F0
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+(pointer to a routine which returns a \214le descriptor representati)2.951 F
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+(\(2\) locking functions.).67 F .425
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+(lying \214les used by the access method.)144 252 R .198
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+(ilable for in memory databases.).25 F F1(Fd)5.198 E F0
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+(\), and the \214le descriptor on success.).18 E 21.28(get A)108 280.8 R
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+(viously been)-.25 F(initialized.)180 379.2 Q(R_IAFTER)144 396 Q 1.165
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+-.25 G -.15(ey)511.27 408 S(/data).15 E(pair)180 420 Q 6.065(.T)-.55 G 1.065
+(he record number of the appended k)209.675 420 R -.15(ey)-.1 G 1.065
+(/data pair is returned in the).15 F F1 -.1(ke)3.565 G(y)-.2 E F0(structure.)
+3.565 E(\(Applicable only to the DB_RECNO access method.\))180 432 Q(R_IBEFORE)
+144 448.8 Q 1.293(Insert the data immediately before the data referenced by)180
+460.8 R F1 -.1(ke)3.793 G(y)-.2 E F0 3.793(,c).32 G 1.293(reating a ne)446.371
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+(wk)-.25 G -.15(ey)242.69 513.6 S(/data pair only if the k).15 E .3 -.15(ey d)
+-.1 H(oes not pre).15 E(viously e)-.25 E(xist.)-.15 E(R_SETCURSOR)144 530.4 Q
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+1.359(etting or initializing the position of the cursor to reference it.)283.94
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+(R_IAFTER and R_IBEFORE are a)144 600 R -.25(va)-.2 G .416
+(ilable only for the DB_RECNO access method because the).25 F(y)-.15 E 1.221
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+(.T)-.5 G .598(he returned k)246.396 242.4 R .898 -.15(ey i)-.1 H 3.098(st).15
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+(reater than or equal to the speci\214ed).15 F -.1(ke)180 254.4 S 1.3 -.65
+(y, p)-.05 H(ermitting partial k).65 E .3 -.15(ey m)-.1 H
+(atches and range searches.\)).15 E(R_FIRST)144 271.2 Q 1.043(The \214rst k)180
+283.2 R -.15(ey)-.1 G 1.044(/data pair of the database is returned, and the cu\
+rsor is set or initialized to).15 F(reference it.)180 295.2 Q(R_LAST)144 312 Q
+.085(The last k)180 324 R -.15(ey)-.1 G .085(/data pair of the database is ret\
+urned, and the cursor is set or initialized to ref-).15 F(erence it.)180 336 Q
+(\(Applicable only to the DB_BTREE and DB_RECNO access methods.\))5 E(R_NEXT)
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+-.1 G .304(/data pair immediately after the cursor).15 F 5.304(.I)-.55 G 2.804
+(ft)410.622 364.8 S .305(he cursor is not yet set, this is)419.536 364.8 R
+(the same as the R_FIRST \215ag.)180 376.8 Q(R_PREV)144 393.6 Q(Retrie)180
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+(/data pair immediately before the cursor).15 F 5.455(.I)-.55 G 2.955(ft)419.05
+405.6 S .454(he cursor is not yet set, this)428.115 405.6 R .62
+(is the same as the R_LAST \215ag.)180 417.6 R .621
+(\(Applicable only to the DB_BTREE and DB_RECNO)5.621 F(access methods.\))180
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+(he DB_RECNO access method is being used,)355.426 487.2 R .025
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+F0(routine has no ef)2.5 E(fect and will al)-.25 E -.1(wa)-.1 G(ys succeed.).1
+E(The \215ag v)144 556.8 Q(alue may be set to the follo)-.25 E(wing v)-.25 E
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+E 16.84(data A)108 141.6 R(pointer to a byte string.)2.5 E 17.95(size The)108
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+(\214le speci\214cation or which is not meaningful for the function \(for e)144
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+ transform /miny exch def /minx exch def
+ minx maxx gt{/minx maxx /maxx minx def def}if
+ miny maxy gt{/miny maxy /maxy miny def def}if
+ Dpatterns Dstipple 1 sub get exch 1 sub get
+ aload pop /stip exch def /stipw exch def /stiph 128 def
+ /imatrix[stipw 0 0 stiph 0 0]def
+ /tmatrix[stipw 0 0 stiph 0 0]def
+ /minx minx cvi stiph idiv stiph mul def
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+ gsave eoclip 0 setgray
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+ minx stipw maxx{
+ tmatrix exch 4 exch put tmatrix setmatrix
+ stipw stiph true imatrix {stip} imagemask
+ }for
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+ grestore
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+ /fontnames[nfonts{()}repeat]def
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+}def
+
+% character outcalls
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+% an attempt at a PostScript FONT to implement ditroff special chars
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+ 2 setlinejoin 40 setlinewidth
+ newpath 0 0 moveto gsave charproc grestore
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+end
+
+DITfd begin
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+/currx{currentpoint pop}def
+/dround{transform round exch round exch itransform} def
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+xt
+
+xs
--- /dev/null
+%!PS-Adobe-1.0
+%%Creator: utopia:margo (& Seltzer,608-13E,8072,)
+%%Title: stdin (ditroff)
+%%CreationDate: Thu Dec 12 15:32:11 1991
+%%EndComments
+% @(#)psdit.pro 1.3 4/15/88
+% lib/psdit.pro -- prolog for psdit (ditroff) files
+% Copyright (c) 1984, 1985 Adobe Systems Incorporated. All Rights Reserved.
+% last edit: shore Sat Nov 23 20:28:03 1985
+% RCSID: $Header: psdit.pro,v 2.1 85/11/24 12:19:43 shore Rel $
+
+% Changed by Edward Wang (edward@ucbarpa.berkeley.edu) to handle graphics,
+% 17 Feb, 87.
+
+/$DITroff 140 dict def $DITroff begin
+/fontnum 1 def /fontsize 10 def /fontheight 10 def /fontslant 0 def
+/xi{0 72 11 mul translate 72 resolution div dup neg scale 0 0 moveto
+ /fontnum 1 def /fontsize 10 def /fontheight 10 def /fontslant 0 def F
+ /pagesave save def}def
+/PB{save /psv exch def currentpoint translate
+ resolution 72 div dup neg scale 0 0 moveto}def
+/PE{psv restore}def
+/arctoobig 90 def /arctoosmall .05 def
+/m1 matrix def /m2 matrix def /m3 matrix def /oldmat matrix def
+/tan{dup sin exch cos div}def
+/point{resolution 72 div mul}def
+/dround {transform round exch round exch itransform}def
+/xT{/devname exch def}def
+/xr{/mh exch def /my exch def /resolution exch def}def
+/xp{}def
+/xs{docsave restore end}def
+/xt{}def
+/xf{/fontname exch def /slotno exch def fontnames slotno get fontname eq not
+ {fonts slotno fontname findfont put fontnames slotno fontname put}if}def
+/xH{/fontheight exch def F}def
+/xS{/fontslant exch def F}def
+/s{/fontsize exch def /fontheight fontsize def F}def
+/f{/fontnum exch def F}def
+/F{fontheight 0 le{/fontheight fontsize def}if
+ fonts fontnum get fontsize point 0 0 fontheight point neg 0 0 m1 astore
+ fontslant 0 ne{1 0 fontslant tan 1 0 0 m2 astore m3 concatmatrix}if
+ makefont setfont .04 fontsize point mul 0 dround pop setlinewidth}def
+/X{exch currentpoint exch pop moveto show}def
+/N{3 1 roll moveto show}def
+/Y{exch currentpoint pop exch moveto show}def
+/S{show}def
+/ditpush{}def/ditpop{}def
+/AX{3 -1 roll currentpoint exch pop moveto 0 exch ashow}def
+/AN{4 2 roll moveto 0 exch ashow}def
+/AY{3 -1 roll currentpoint pop exch moveto 0 exch ashow}def
+/AS{0 exch ashow}def
+/MX{currentpoint exch pop moveto}def
+/MY{currentpoint pop exch moveto}def
+/MXY{moveto}def
+/cb{pop}def % action on unknown char -- nothing for now
+/n{}def/w{}def
+/p{pop showpage pagesave restore /pagesave save def}def
+/Dt{/Dlinewidth exch def}def 1 Dt
+/Ds{/Ddash exch def}def -1 Ds
+/Di{/Dstipple exch def}def 1 Di
+/Dsetlinewidth{2 Dlinewidth mul setlinewidth}def
+/Dsetdash{Ddash 4 eq{[8 12]}{Ddash 16 eq{[32 36]}
+ {Ddash 20 eq{[32 12 8 12]}{[]}ifelse}ifelse}ifelse 0 setdash}def
+/Dstroke{gsave Dsetlinewidth Dsetdash 1 setlinecap stroke grestore
+ currentpoint newpath moveto}def
+/Dl{rlineto Dstroke}def
+/arcellipse{/diamv exch def /diamh exch def oldmat currentmatrix pop
+ currentpoint translate 1 diamv diamh div scale /rad diamh 2 div def
+ currentpoint exch rad add exch rad -180 180 arc oldmat setmatrix}def
+/Dc{dup arcellipse Dstroke}def
+/De{arcellipse Dstroke}def
+/Da{/endv exch def /endh exch def /centerv exch def /centerh exch def
+ /cradius centerv centerv mul centerh centerh mul add sqrt def
+ /eradius endv endv mul endh endh mul add sqrt def
+ /endang endv endh atan def
+ /startang centerv neg centerh neg atan def
+ /sweep startang endang sub dup 0 lt{360 add}if def
+ sweep arctoobig gt
+ {/midang startang sweep 2 div sub def /midrad cradius eradius add 2 div def
+ /midh midang cos midrad mul def /midv midang sin midrad mul def
+ midh neg midv neg endh endv centerh centerv midh midv Da
+ Da}
+ {sweep arctoosmall ge
+ {/controldelt 1 sweep 2 div cos sub 3 sweep 2 div sin mul div 4 mul def
+ centerv neg controldelt mul centerh controldelt mul
+ endv neg controldelt mul centerh add endh add
+ endh controldelt mul centerv add endv add
+ centerh endh add centerv endv add rcurveto Dstroke}
+ {centerh endh add centerv endv add rlineto Dstroke}
+ ifelse}
+ ifelse}def
+/Dpatterns[
+[%cf[widthbits]
+[8<0000000000000010>]
+[8<0411040040114000>]
+[8<0204081020408001>]
+[8<0000103810000000>]
+[8<6699996666999966>]
+[8<0000800100001008>]
+[8<81c36666c3810000>]
+[8<0f0e0c0800000000>]
+[8<0000000000000010>]
+[8<0411040040114000>]
+[8<0204081020408001>]
+[8<0000001038100000>]
+[8<6699996666999966>]
+[8<0000800100001008>]
+[8<81c36666c3810000>]
+[8<0f0e0c0800000000>]
+[8<0042660000246600>]
+[8<0000990000990000>]
+[8<0804020180402010>]
+[8<2418814242811824>]
+[8<6699996666999966>]
+[8<8000000008000000>]
+[8<00001c3e363e1c00>]
+[8<0000000000000000>]
+[32<00000040000000c00000004000000040000000e0000000000000000000000000>]
+[32<00000000000060000000900000002000000040000000f0000000000000000000>]
+[32<000000000000000000e0000000100000006000000010000000e0000000000000>]
+[32<00000000000000002000000060000000a0000000f00000002000000000000000>]
+[32<0000000e0000000000000000000000000000000f000000080000000e00000001>]
+[32<0000090000000600000000000000000000000000000007000000080000000e00>]
+[32<00010000000200000004000000040000000000000000000000000000000f0000>]
+[32<0900000006000000090000000600000000000000000000000000000006000000>]]
+[%ug
+[8<0000020000000000>]
+[8<0000020000002000>]
+[8<0004020000002000>]
+[8<0004020000402000>]
+[8<0004060000402000>]
+[8<0004060000406000>]
+[8<0006060000406000>]
+[8<0006060000606000>]
+[8<00060e0000606000>]
+[8<00060e000060e000>]
+[8<00070e000060e000>]
+[8<00070e000070e000>]
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+[8<04070e024070e020>]
+[8<04070e064070e020>]
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+[8<06070e064070e060>]
+[8<06070e066070e060>]
+[8<06070f066070e060>]
+[8<06070f066070f060>]
+[8<060f0f066070f060>]
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+[8<060f0f0760f0f060>]
+[8<060f0f0760f0f070>]
+[8<0e0f0f0760f0f070>]
+[8<0e0f0f07e0f0f070>]
+[8<0e0f0f0fe0f0f070>]
+[8<0e0f0f0fe0f0f0f0>]
+[8<0f0f0f0fe0f0f0f0>]
+[8<0f0f0f0ff0f0f0f0>]
+[8<1f0f0f0ff0f0f0f0>]
+[8<1f0f0f0ff1f0f0f0>]
+[8<1f0f0f8ff1f0f0f0>]
+[8<1f0f0f8ff1f0f0f8>]
+[8<9f0f0f8ff1f0f0f8>]
+[8<9f0f0f8ff9f0f0f8>]
+[8<9f0f0f9ff9f0f0f8>]
+[8<9f0f0f9ff9f0f0f9>]
+[8<9f8f0f9ff9f0f0f9>]
+[8<9f8f0f9ff9f8f0f9>]
+[8<9f8f1f9ff9f8f0f9>]
+[8<9f8f1f9ff9f8f1f9>]
+[8<bf8f1f9ff9f8f1f9>]
+[8<bf8f1f9ffbf8f1f9>]
+[8<bf8f1fdffbf8f1f9>]
+[8<bf8f1fdffbf8f1fd>]
+[8<ff8f1fdffbf8f1fd>]
+[8<ff8f1fdffff8f1fd>]
+[8<ff8f1ffffff8f1fd>]
+[8<ff8f1ffffff8f1ff>]
+[8<ff9f1ffffff8f1ff>]
+[8<ff9f1ffffff9f1ff>]
+[8<ff9f9ffffff9f1ff>]
+[8<ff9f9ffffff9f9ff>]
+[8<ffbf9ffffff9f9ff>]
+[8<ffbf9ffffffbf9ff>]
+[8<ffbfdffffffbf9ff>]
+[8<ffbfdffffffbfdff>]
+[8<ffffdffffffbfdff>]
+[8<ffffdffffffffdff>]
+[8<fffffffffffffdff>]
+[8<ffffffffffffffff>]]
+[%mg
+[8<8000000000000000>]
+[8<0822080080228000>]
+[8<0204081020408001>]
+[8<40e0400000000000>]
+[8<66999966>]
+[8<8001000010080000>]
+[8<81c36666c3810000>]
+[8<f0e0c08000000000>]
+[16<07c00f801f003e007c00f800f001e003c007800f001f003e007c00f801f003e0>]
+[16<1f000f8007c003e001f000f8007c003e001f800fc007e003f001f8007c003e00>]
+[8<c3c300000000c3c3>]
+[16<0040008001000200040008001000200040008000000100020004000800100020>]
+[16<0040002000100008000400020001800040002000100008000400020001000080>]
+[16<1fc03fe07df0f8f8f07de03fc01f800fc01fe03ff07df8f87df03fe01fc00f80>]
+[8<80>]
+[8<8040201000000000>]
+[8<84cc000048cc0000>]
+[8<9900009900000000>]
+[8<08040201804020100800020180002010>]
+[8<2418814242811824>]
+[8<66999966>]
+[8<8000000008000000>]
+[8<70f8d8f870000000>]
+[8<0814224180402010>]
+[8<aa00440a11a04400>]
+[8<018245aa45820100>]
+[8<221c224180808041>]
+[8<88000000>]
+[8<0855800080550800>]
+[8<2844004482440044>]
+[8<0810204080412214>]
+[8<00>]]]def
+/Dfill{
+ transform /maxy exch def /maxx exch def
+ transform /miny exch def /minx exch def
+ minx maxx gt{/minx maxx /maxx minx def def}if
+ miny maxy gt{/miny maxy /maxy miny def def}if
+ Dpatterns Dstipple 1 sub get exch 1 sub get
+ aload pop /stip exch def /stipw exch def /stiph 128 def
+ /imatrix[stipw 0 0 stiph 0 0]def
+ /tmatrix[stipw 0 0 stiph 0 0]def
+ /minx minx cvi stiph idiv stiph mul def
+ /miny miny cvi stipw idiv stipw mul def
+ gsave eoclip 0 setgray
+ miny stiph maxy{
+ tmatrix exch 5 exch put
+ minx stipw maxx{
+ tmatrix exch 4 exch put tmatrix setmatrix
+ stipw stiph true imatrix {stip} imagemask
+ }for
+ }for
+ grestore
+}def
+/Dp{Dfill Dstroke}def
+/DP{Dfill currentpoint newpath moveto}def
+end
+
+/ditstart{$DITroff begin
+ /nfonts 60 def % NFONTS makedev/ditroff dependent!
+ /fonts[nfonts{0}repeat]def
+ /fontnames[nfonts{()}repeat]def
+/docsave save def
+}def
+
+% character outcalls
+/oc{
+ /pswid exch def /cc exch def /name exch def
+ /ditwid pswid fontsize mul resolution mul 72000 div def
+ /ditsiz fontsize resolution mul 72 div def
+ ocprocs name known{ocprocs name get exec}{name cb}ifelse
+}def
+/fractm [.65 0 0 .6 0 0] def
+/fraction{
+ /fden exch def /fnum exch def gsave /cf currentfont def
+ cf fractm makefont setfont 0 .3 dm 2 copy neg rmoveto
+ fnum show rmoveto currentfont cf setfont(\244)show setfont fden show
+ grestore ditwid 0 rmoveto
+}def
+/oce{grestore ditwid 0 rmoveto}def
+/dm{ditsiz mul}def
+/ocprocs 50 dict def ocprocs begin
+(14){(1)(4)fraction}def
+(12){(1)(2)fraction}def
+(34){(3)(4)fraction}def
+(13){(1)(3)fraction}def
+(23){(2)(3)fraction}def
+(18){(1)(8)fraction}def
+(38){(3)(8)fraction}def
+(58){(5)(8)fraction}def
+(78){(7)(8)fraction}def
+(sr){gsave 0 .06 dm rmoveto(\326)show oce}def
+(is){gsave 0 .15 dm rmoveto(\362)show oce}def
+(->){gsave 0 .02 dm rmoveto(\256)show oce}def
+(<-){gsave 0 .02 dm rmoveto(\254)show oce}def
+(==){gsave 0 .05 dm rmoveto(\272)show oce}def
+(uc){gsave currentpoint 400 .009 dm mul add translate
+ 8 -8 scale ucseal oce}def
+end
+
+% an attempt at a PostScript FONT to implement ditroff special chars
+% this will enable us to
+% cache the little buggers
+% generate faster, more compact PS out of psdit
+% confuse everyone (including myself)!
+50 dict dup begin
+/FontType 3 def
+/FontName /DIThacks def
+/FontMatrix [.001 0 0 .001 0 0] def
+/FontBBox [-260 -260 900 900] def% a lie but ...
+/Encoding 256 array def
+0 1 255{Encoding exch /.notdef put}for
+Encoding
+ dup 8#040/space put %space
+ dup 8#110/rc put %right ceil
+ dup 8#111/lt put %left top curl
+ dup 8#112/bv put %bold vert
+ dup 8#113/lk put %left mid curl
+ dup 8#114/lb put %left bot curl
+ dup 8#115/rt put %right top curl
+ dup 8#116/rk put %right mid curl
+ dup 8#117/rb put %right bot curl
+ dup 8#120/rf put %right floor
+ dup 8#121/lf put %left floor
+ dup 8#122/lc put %left ceil
+ dup 8#140/sq put %square
+ dup 8#141/bx put %box
+ dup 8#142/ci put %circle
+ dup 8#143/br put %box rule
+ dup 8#144/rn put %root extender
+ dup 8#145/vr put %vertical rule
+ dup 8#146/ob put %outline bullet
+ dup 8#147/bu put %bullet
+ dup 8#150/ru put %rule
+ dup 8#151/ul put %underline
+ pop
+/DITfd 100 dict def
+/BuildChar{0 begin
+ /cc exch def /fd exch def
+ /charname fd /Encoding get cc get def
+ /charwid fd /Metrics get charname get def
+ /charproc fd /CharProcs get charname get def
+ charwid 0 fd /FontBBox get aload pop setcachedevice
+ 2 setlinejoin 40 setlinewidth
+ newpath 0 0 moveto gsave charproc grestore
+ end}def
+/BuildChar load 0 DITfd put
+/CharProcs 50 dict def
+CharProcs begin
+/space{}def
+/.notdef{}def
+/ru{500 0 rls}def
+/rn{0 840 moveto 500 0 rls}def
+/vr{0 800 moveto 0 -770 rls}def
+/bv{0 800 moveto 0 -1000 rls}def
+/br{0 840 moveto 0 -1000 rls}def
+/ul{0 -140 moveto 500 0 rls}def
+/ob{200 250 rmoveto currentpoint newpath 200 0 360 arc closepath stroke}def
+/bu{200 250 rmoveto currentpoint newpath 200 0 360 arc closepath fill}def
+/sq{80 0 rmoveto currentpoint dround newpath moveto
+ 640 0 rlineto 0 640 rlineto -640 0 rlineto closepath stroke}def
+/bx{80 0 rmoveto currentpoint dround newpath moveto
+ 640 0 rlineto 0 640 rlineto -640 0 rlineto closepath fill}def
+/ci{500 360 rmoveto currentpoint newpath 333 0 360 arc
+ 50 setlinewidth stroke}def
+
+/lt{0 -200 moveto 0 550 rlineto currx 800 2cx s4 add exch s4 a4p stroke}def
+/lb{0 800 moveto 0 -550 rlineto currx -200 2cx s4 add exch s4 a4p stroke}def
+/rt{0 -200 moveto 0 550 rlineto currx 800 2cx s4 sub exch s4 a4p stroke}def
+/rb{0 800 moveto 0 -500 rlineto currx -200 2cx s4 sub exch s4 a4p stroke}def
+/lk{0 800 moveto 0 300 -300 300 s4 arcto pop pop 1000 sub
+ 0 300 4 2 roll s4 a4p 0 -200 lineto stroke}def
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+(\(3\),).24 E F1(btr)2.5 E(ee)-.37 E F0(\(3\),).18 E F1(hash)2.5 E F0(\(3\),)
+.28 E F1 -.37(re)2.5 G(cno).37 E F0(\(3\)).18 E(4.4 Berk)72 732 Q(ele)-.1 E 2.5
+(yD)-.15 G(istrib)132.57 732 Q 104.595(ution June)-.2 F(4, 1993)2.5 E(2)535 732
+Q EP
+%%Trailer
+end
+%%EOF
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+(SYNOPSIS)72 112.8 Q/F2 10/Times-Bold@0 SF(#include <sys/types.h>)108 124.8 Q
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+(.h> include \214le as)-.4 F(follo)108 283.2 Q(ws:)-.25 E(typedef struct {)108
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+Q(int lorder;)144 348 Q(size_t reclen;)144 360 Q(u_char b)144 372 Q -.25(va)
+-.15 G(l;).25 E(char *bfname;)144 384 Q 2.5(}R)108 396 S(ECNOINFO;)121.97 396 Q
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+(routines)3.557 E .029(are not required to \214ll in the k)180 547.2 R .329
+-.15(ey s)-.1 H 2.529(tructure. This).15 F .028(permits applications to retrie)
+2.529 F .328 -.15(ve r)-.25 H .028(ecords at).15 F
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+(\(no size is speci\214ed\) a)2.546 F(def)144 652.8 Q(ault cache is used.)-.1 E
+12.95(psize The)108 669.6 R .715
+(recno access method stores the in-memory copies of its records in a btree.)
+3.216 F .715(This v)5.715 F .715(alue is the)-.25 F .805
+(size \(in bytes\) of the pages used for nodes in that tree.)144 681.6 R(If)
+5.805 E F3(psize)3.305 E F0 .806(is 0 \(no page size is speci\214ed\) a)3.305 F
+1.468
+(page size is chosen based on the underlying \214le system I/O block size.)144
+693.6 R(See)6.467 E F3(btr)3.967 E(ee)-.37 E F0 1.467(\(3\) for more).18 F
+(4.4 Berk)72 732 Q(ele)-.1 E 2.5(yD)-.15 G(istrib)132.57 732 Q 96.815
+(ution August)-.2 F(18, 1994)2.5 E(1)535 732 Q EP
+%%Page: 2 2
+%%BeginPageSetup
+BP
+%%EndPageSetup
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+(lorder The)108 100.8 R 1.596(byte order for inte)4.096 F 1.596
+(gers in the stored database metadata.)-.15 F 1.597
+(The number should represent the)6.597 F .689(order as an inte)144 112.8 R .689
+(ger; for e)-.15 F .689(xample, big endian order w)-.15 F .689
+(ould be the number 4,321.)-.1 F(If)5.689 E/F1 10/Times-Italic@0 SF(lor)3.189 E
+(der)-.37 E F0 .688(is 0 \(no)3.189 F
+(order is speci\214ed\) the current host order is used.)144 124.8 Q 9.07
+(reclen The)108 141.6 R(length of a \214x)2.5 E(ed-length record.)-.15 E -.15
+(bv)108 158.4 S 16.68(al The)-.1 F .182
+(delimiting byte to be used to mark the end of a record for v)2.682 F .183
+(ariable-length records, and the pad)-.25 F .809(character for \214x)144 170.4
+R .809(ed-length records.)-.15 F .809(If no v)5.809 F .809
+(alue is speci\214ed, ne)-.25 F .809(wlines \(`)-.25 F(`\\n')-.74 E .808
+('\) are used to mark the)-.74 F(end of v)144 182.4 Q
+(ariable-length records and \214x)-.25 E
+(ed-length records are padded with spaces.)-.15 E 3.51(bfname The)108 199.2 R
+.505
+(recno access method stores the in-memory copies of its records in a btree.)
+3.005 F .506(If bfname is non-)5.506 F .065(NULL, it speci\214es the name of t\
+he btree \214le, as if speci\214ed as the \214le name for a dbopen of a btree)
+144 211.2 R(\214le.)144 223.2 Q .971(The data part of the k)108 240 R -.15(ey)
+-.1 G .972(/data pair used by the recno access method is the same as other acc\
+ess methods.).15 F .199(The k)108 252 R .499 -.15(ey i)-.1 H 2.699(sd).15 G(if)
+157.507 252 Q 2.699(ferent. The)-.25 F F1(data)2.699 E F0 .199
+(\214eld of the k)2.699 F .499 -.15(ey s)-.1 H .198
+(hould be a pointer to a memory location of type).15 F F1 -.37(re)2.698 G
+(cno_t).37 E F0 2.698(,a).68 G(s)536.11 252 Q .505(de\214ned in the <db)108 264
+R .506(.h> include \214le.)-.4 F .506(This type is normally the lar)5.506 F
+.506(gest unsigned inte)-.18 F .506(gral type a)-.15 F -.25(va)-.2 G .506
+(ilable to the).25 F 2.5(implementation. The)108 276 R F1(size)2.5 E F0
+(\214eld of the k)2.5 E .3 -.15(ey s)-.1 H(hould be the size of that type.).15
+E .706(Because there can be no meta-data associated with the underlying recno \
+access method \214les, an)108 292.8 R 3.206(yc)-.15 G(hanges)512.23 292.8 Q
+1.262(made to the def)108 304.8 R 1.262(ault v)-.1 F 1.262(alues \(e.g. \214x)
+-.25 F 1.263(ed record length or byte separator v)-.15 F 1.263
+(alue\) must be e)-.25 F 1.263(xplicitly speci\214ed)-.15 F
+(each time the \214le is opened.)108 316.8 Q .065(In the interf)108 333.6 R
+.065(ace speci\214ed by)-.1 F F1(dbopen)2.564 E F0 2.564(,u).24 G .064
+(sing the)261.548 333.6 R F1(put)2.564 E F0(interf)2.564 E .064
+(ace to create a ne)-.1 F 2.564(wr)-.25 G .064
+(ecord will cause the creation of)414.44 333.6 R .755(multiple, empty records \
+if the record number is more than one greater than the lar)108 345.6 R .755
+(gest record currently in)-.18 F(the database.)108 357.6 Q/F2 9/Times-Bold@0 SF
+(ERR)72 374.4 Q(ORS)-.27 E F0(The)108 386.4 Q F1 -.37(re)2.922 G(cno).37 E F0
+.421(access method routines may f)2.921 F .421(ail and set)-.1 F F1(errno)2.921
+E F0 .421(for an)2.921 F 2.921(yo)-.15 G 2.921(ft)377.933 386.4 S .421
+(he errors speci\214ed for the library rou-)386.964 386.4 R(tine)108 398.4 Q F1
+(dbopen)2.5 E F0(\(3\) or the follo).24 E(wing:)-.25 E([EINV)108 415.2 Q(AL])
+-1.35 E(An attempt w)144 427.2 Q(as made to add a record to a \214x)-.1 E
+(ed-length database that w)-.15 E(as too lar)-.1 E(ge to \214t.)-.18 E F2
+(SEE ALSO)72 444 Q F1(btr)108 456 Q(ee)-.37 E F0(\(3\)).18 E F1(dbopen)2.5 E F0
+(\(3\),).24 E F1(hash)2.5 E F0(\(3\),).28 E F1(mpool)2.5 E F0(\(3\),).51 E F1
+2.754(Document Pr)108 480 R 2.754(ocessing in a Relational Database System)-.45
+F F0 5.255(,M).32 G 2.755(ichael Stonebrak)362.13 480 R(er)-.1 E 5.255(,H)-.4 G
+2.755(eidi Stettner)454.06 480 R 5.255(,J)-.4 G(oseph)516.67 480 Q
+(Kalash, Antonin Guttman, Nadene L)108 492 Q
+(ynn, Memorandum No. UCB/ERL M82/32, May 1982.)-.55 E F2 -.09(BU)72 508.8 S(GS)
+.09 E F0(Only big and little endian byte order is supported.)108 520.8 Q
+(4.4 Berk)72 732 Q(ele)-.1 E 2.5(yD)-.15 G(istrib)132.57 732 Q 96.815
+(ution August)-.2 F(18, 1994)2.5 E(2)535 732 Q EP
+%%Trailer
+end
+%%EOF
--- /dev/null
+# @(#)Makefile.inc 8.1 (Berkeley) 6/4/93
+
+.PATH: ${.CURDIR}/db/hash
+
+SRCS+= hash.c hash_bigkey.c hash_buf.c hash_func.c hash_log2.c \
+ hash_page.c hsearch.c ndbm.c
--- /dev/null
+# @(#)README 8.1 (Berkeley) 6/4/93
+
+This package implements a superset of the hsearch and dbm/ndbm libraries.
+
+Test Programs:
+ All test programs which need key/data pairs expect them entered
+ with key and data on separate lines
+
+ tcreat3.c
+ Takes
+ bucketsize (bsize),
+ fill factor (ffactor), and
+ initial number of elements (nelem).
+ Creates a hash table named hashtest containing the
+ keys/data pairs entered from standard in.
+ thash4.c
+ Takes
+ bucketsize (bsize),
+ fill factor (ffactor),
+ initial number of elements (nelem)
+ bytes of cache (ncached), and
+ file from which to read data (fname)
+ Creates a table from the key/data pairs on standard in and
+ then does a read of each key/data in fname
+ tdel.c
+ Takes
+ bucketsize (bsize), and
+ fill factor (ffactor).
+ file from which to read data (fname)
+ Reads each key/data pair from fname and deletes the
+ key from the hash table hashtest
+ tseq.c
+ Reads the key/data pairs in the file hashtest and writes them
+ to standard out.
+ tread2.c
+ Takes
+ butes of cache (ncached).
+ Reads key/data pairs from standard in and looks them up
+ in the file hashtest.
+ tverify.c
+ Reads key/data pairs from standard in, looks them up
+ in the file hashtest, and verifies that the data is
+ correct.
+
+NOTES:
+
+The file search.h is provided for using the hsearch compatible interface
+on BSD systems. On System V derived systems, search.h should appear in
+/usr/include.
+
+The man page ../man/db.3 explains the interface to the hashing system.
+The file hash.ps is a postscript copy of a paper explaining
+the history, implementation, and performance of the hash package.
+
+"bugs" or idiosyncracies
+
+If you have a lot of overflows, it is possible to run out of overflow
+pages. Currently, this will cause a message to be printed on stderr.
+Eventually, this will be indicated by a return error code.
+
+If you are using the ndbm interface and exit without flushing or closing the
+file, you may lose updates since the package buffers all writes. Also,
+the db interface only creates a single database file. To avoid overwriting
+the user's original file, the suffix ".db" is appended to the file name
+passed to dbm_open. Additionally, if your code "knows" about the historic
+.dir and .pag files, it will break.
+
+There is a fundamental difference between this package and the old hsearch.
+Hsearch requires the user to maintain the keys and data in the application's
+allocated memory while hash takes care of all storage management. The down
+side is that the byte strings passed in the ENTRY structure must be null
+terminated (both the keys and the data).
--- /dev/null
+/*-
+ * Copyright (c) 1991, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)extern.h 8.4 (Berkeley) 6/16/94
+ */
+
+BUFHEAD *__add_ovflpage __P((HTAB *, BUFHEAD *));
+int __addel __P((HTAB *, BUFHEAD *, const DBT *, const DBT *));
+int __big_delete __P((HTAB *, BUFHEAD *));
+int __big_insert __P((HTAB *, BUFHEAD *, const DBT *, const DBT *));
+int __big_keydata __P((HTAB *, BUFHEAD *, DBT *, DBT *, int));
+int __big_return __P((HTAB *, BUFHEAD *, int, DBT *, int));
+int __big_split __P((HTAB *, BUFHEAD *, BUFHEAD *, BUFHEAD *,
+ int, u_int32_t, SPLIT_RETURN *));
+int __buf_free __P((HTAB *, int, int));
+void __buf_init __P((HTAB *, int));
+u_int32_t __call_hash __P((HTAB *, char *, int));
+int __delpair __P((HTAB *, BUFHEAD *, int));
+int __expand_table __P((HTAB *));
+int __find_bigpair __P((HTAB *, BUFHEAD *, int, char *, int));
+u_int16_t __find_last_page __P((HTAB *, BUFHEAD **));
+void __free_ovflpage __P((HTAB *, BUFHEAD *));
+BUFHEAD *__get_buf __P((HTAB *, u_int32_t, BUFHEAD *, int));
+int __get_page __P((HTAB *, char *, u_int32_t, int, int, int));
+int __ibitmap __P((HTAB *, int, int, int));
+u_int32_t __log2 __P((u_int32_t));
+int __put_page __P((HTAB *, char *, u_int32_t, int, int));
+void __reclaim_buf __P((HTAB *, BUFHEAD *));
+int __split_page __P((HTAB *, u_int32_t, u_int32_t));
+
+/* Default hash routine. */
+extern u_int32_t (*__default_hash) __P((const void *, size_t));
+
+#ifdef HASH_STATISTICS
+extern int hash_accesses, hash_collisions, hash_expansions, hash_overflows;
+#endif
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)hash.c 8.9 (Berkeley) 6/16/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/stat.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#ifdef DEBUG
+#include <assert.h>
+#endif
+
+#include <db.h>
+#include "hash.h"
+#include "page.h"
+#include "extern.h"
+
+static int alloc_segs __P((HTAB *, int));
+static int flush_meta __P((HTAB *));
+static int hash_access __P((HTAB *, ACTION, DBT *, DBT *));
+static int hash_close __P((DB *));
+static int hash_delete __P((const DB *, const DBT *, u_int32_t));
+static int hash_fd __P((const DB *));
+static int hash_get __P((const DB *, const DBT *, DBT *, u_int32_t));
+static int hash_put __P((const DB *, DBT *, const DBT *, u_int32_t));
+static void *hash_realloc __P((SEGMENT **, int, int));
+static int hash_seq __P((const DB *, DBT *, DBT *, u_int32_t));
+static int hash_sync __P((const DB *, u_int32_t));
+static int hdestroy __P((HTAB *));
+static HTAB *init_hash __P((HTAB *, const char *, HASHINFO *));
+static int init_htab __P((HTAB *, int));
+#if BYTE_ORDER == LITTLE_ENDIAN
+static void swap_header __P((HTAB *));
+static void swap_header_copy __P((HASHHDR *, HASHHDR *));
+#endif
+
+/* Fast arithmetic, relying on powers of 2, */
+#define MOD(x, y) ((x) & ((y) - 1))
+
+#define RETURN_ERROR(ERR, LOC) { save_errno = ERR; goto LOC; }
+
+/* Return values */
+#define SUCCESS (0)
+#define ERROR (-1)
+#define ABNORMAL (1)
+
+#ifdef HASH_STATISTICS
+int hash_accesses, hash_collisions, hash_expansions, hash_overflows;
+#endif
+
+/************************** INTERFACE ROUTINES ***************************/
+/* OPEN/CLOSE */
+
+extern DB *
+__hash_open(file, flags, mode, info, dflags)
+ const char *file;
+ int flags, mode, dflags;
+ const HASHINFO *info; /* Special directives for create */
+{
+ HTAB *hashp;
+ struct stat statbuf;
+ DB *dbp;
+ int bpages, hdrsize, new_table, nsegs, save_errno;
+
+ if ((flags & O_ACCMODE) == O_WRONLY) {
+ errno = EINVAL;
+ return (NULL);
+ }
+
+ if (!(hashp = (HTAB *)calloc(1, sizeof(HTAB))))
+ return (NULL);
+ hashp->fp = -1;
+
+ /*
+ * Even if user wants write only, we need to be able to read
+ * the actual file, so we need to open it read/write. But, the
+ * field in the hashp structure needs to be accurate so that
+ * we can check accesses.
+ */
+ hashp->flags = flags;
+
+ new_table = 0;
+ if (!file || (flags & O_TRUNC) ||
+ (stat(file, &statbuf) && (errno == ENOENT))) {
+ if (errno == ENOENT)
+ errno = 0; /* Just in case someone looks at errno */
+ new_table = 1;
+ }
+ if (file) {
+ if ((hashp->fp = open(file, flags, mode)) == -1)
+ RETURN_ERROR(errno, error0);
+ (void)fcntl(hashp->fp, F_SETFD, 1);
+ }
+ if (new_table) {
+ if (!(hashp = init_hash(hashp, file, (HASHINFO *)info)))
+ RETURN_ERROR(errno, error1);
+ } else {
+ /* Table already exists */
+ if (info && info->hash)
+ hashp->hash = info->hash;
+ else
+ hashp->hash = __default_hash;
+
+ hdrsize = read(hashp->fp, &hashp->hdr, sizeof(HASHHDR));
+#if BYTE_ORDER == LITTLE_ENDIAN
+ swap_header(hashp);
+#endif
+ if (hdrsize == -1)
+ RETURN_ERROR(errno, error1);
+ if (hdrsize != sizeof(HASHHDR))
+ RETURN_ERROR(EFTYPE, error1);
+ /* Verify file type, versions and hash function */
+ if (hashp->MAGIC != HASHMAGIC)
+ RETURN_ERROR(EFTYPE, error1);
+#define OLDHASHVERSION 1
+ if (hashp->VERSION != HASHVERSION &&
+ hashp->VERSION != OLDHASHVERSION)
+ RETURN_ERROR(EFTYPE, error1);
+ if (hashp->hash(CHARKEY, sizeof(CHARKEY)) != hashp->H_CHARKEY)
+ RETURN_ERROR(EFTYPE, error1);
+ /*
+ * Figure out how many segments we need. Max_Bucket is the
+ * maximum bucket number, so the number of buckets is
+ * max_bucket + 1.
+ */
+ nsegs = (hashp->MAX_BUCKET + 1 + hashp->SGSIZE - 1) /
+ hashp->SGSIZE;
+ hashp->nsegs = 0;
+ if (alloc_segs(hashp, nsegs))
+ /*
+ * If alloc_segs fails, table will have been destroyed
+ * and errno will have been set.
+ */
+ return (NULL);
+ /* Read in bitmaps */
+ bpages = (hashp->SPARES[hashp->OVFL_POINT] +
+ (hashp->BSIZE << BYTE_SHIFT) - 1) >>
+ (hashp->BSHIFT + BYTE_SHIFT);
+
+ hashp->nmaps = bpages;
+ (void)memset(&hashp->mapp[0], 0, bpages * sizeof(u_int32_t *));
+ }
+
+ /* Initialize Buffer Manager */
+ if (info && info->cachesize)
+ __buf_init(hashp, info->cachesize);
+ else
+ __buf_init(hashp, DEF_BUFSIZE);
+
+ hashp->new_file = new_table;
+ hashp->save_file = file && (hashp->flags & O_RDWR);
+ hashp->cbucket = -1;
+ if (!(dbp = (DB *)malloc(sizeof(DB)))) {
+ save_errno = errno;
+ hdestroy(hashp);
+ errno = save_errno;
+ return (NULL);
+ }
+ dbp->internal = hashp;
+ dbp->close = hash_close;
+ dbp->del = hash_delete;
+ dbp->fd = hash_fd;
+ dbp->get = hash_get;
+ dbp->put = hash_put;
+ dbp->seq = hash_seq;
+ dbp->sync = hash_sync;
+ dbp->type = DB_HASH;
+
+#ifdef DEBUG
+ (void)fprintf(stderr,
+"%s\n%s%x\n%s%d\n%s%d\n%s%d\n%s%d\n%s%d\n%s%d\n%s%d\n%s%d\n%s%d\n%s%x\n%s%x\n%s%d\n%s%d\n",
+ "init_htab:",
+ "TABLE POINTER ", hashp,
+ "BUCKET SIZE ", hashp->BSIZE,
+ "BUCKET SHIFT ", hashp->BSHIFT,
+ "DIRECTORY SIZE ", hashp->DSIZE,
+ "SEGMENT SIZE ", hashp->SGSIZE,
+ "SEGMENT SHIFT ", hashp->SSHIFT,
+ "FILL FACTOR ", hashp->FFACTOR,
+ "MAX BUCKET ", hashp->MAX_BUCKET,
+ "OVFL POINT ", hashp->OVFL_POINT,
+ "LAST FREED ", hashp->LAST_FREED,
+ "HIGH MASK ", hashp->HIGH_MASK,
+ "LOW MASK ", hashp->LOW_MASK,
+ "NSEGS ", hashp->nsegs,
+ "NKEYS ", hashp->NKEYS);
+#endif
+#ifdef HASH_STATISTICS
+ hash_overflows = hash_accesses = hash_collisions = hash_expansions = 0;
+#endif
+ return (dbp);
+
+error1:
+ if (hashp != NULL)
+ (void)close(hashp->fp);
+
+error0:
+ free(hashp);
+ errno = save_errno;
+ return (NULL);
+}
+
+static int
+hash_close(dbp)
+ DB *dbp;
+{
+ HTAB *hashp;
+ int retval;
+
+ if (!dbp)
+ return (ERROR);
+
+ hashp = (HTAB *)dbp->internal;
+ retval = hdestroy(hashp);
+ free(dbp);
+ return (retval);
+}
+
+static int
+hash_fd(dbp)
+ const DB *dbp;
+{
+ HTAB *hashp;
+
+ if (!dbp)
+ return (ERROR);
+
+ hashp = (HTAB *)dbp->internal;
+ if (hashp->fp == -1) {
+ errno = ENOENT;
+ return (-1);
+ }
+ return (hashp->fp);
+}
+
+/************************** LOCAL CREATION ROUTINES **********************/
+static HTAB *
+init_hash(hashp, file, info)
+ HTAB *hashp;
+ const char *file;
+ HASHINFO *info;
+{
+ struct stat statbuf;
+ int nelem;
+
+ nelem = 1;
+ hashp->NKEYS = 0;
+ hashp->LORDER = BYTE_ORDER;
+ hashp->BSIZE = DEF_BUCKET_SIZE;
+ hashp->BSHIFT = DEF_BUCKET_SHIFT;
+ hashp->SGSIZE = DEF_SEGSIZE;
+ hashp->SSHIFT = DEF_SEGSIZE_SHIFT;
+ hashp->DSIZE = DEF_DIRSIZE;
+ hashp->FFACTOR = DEF_FFACTOR;
+ hashp->hash = __default_hash;
+ memset(hashp->SPARES, 0, sizeof(hashp->SPARES));
+ memset(hashp->BITMAPS, 0, sizeof (hashp->BITMAPS));
+
+ /* Fix bucket size to be optimal for file system */
+ if (file != NULL) {
+ if (stat(file, &statbuf))
+ return (NULL);
+ hashp->BSIZE = statbuf.st_blksize;
+ hashp->BSHIFT = __log2(hashp->BSIZE);
+ }
+
+ if (info) {
+ if (info->bsize) {
+ /* Round pagesize up to power of 2 */
+ hashp->BSHIFT = __log2(info->bsize);
+ hashp->BSIZE = 1 << hashp->BSHIFT;
+ if (hashp->BSIZE > MAX_BSIZE) {
+ errno = EINVAL;
+ return (NULL);
+ }
+ }
+ if (info->ffactor)
+ hashp->FFACTOR = info->ffactor;
+ if (info->hash)
+ hashp->hash = info->hash;
+ if (info->nelem)
+ nelem = info->nelem;
+ if (info->lorder) {
+ if (info->lorder != BIG_ENDIAN &&
+ info->lorder != LITTLE_ENDIAN) {
+ errno = EINVAL;
+ return (NULL);
+ }
+ hashp->LORDER = info->lorder;
+ }
+ }
+ /* init_htab should destroy the table and set errno if it fails */
+ if (init_htab(hashp, nelem))
+ return (NULL);
+ else
+ return (hashp);
+}
+/*
+ * This calls alloc_segs which may run out of memory. Alloc_segs will destroy
+ * the table and set errno, so we just pass the error information along.
+ *
+ * Returns 0 on No Error
+ */
+static int
+init_htab(hashp, nelem)
+ HTAB *hashp;
+ int nelem;
+{
+ register int nbuckets, nsegs;
+ int l2;
+
+ /*
+ * Divide number of elements by the fill factor and determine a
+ * desired number of buckets. Allocate space for the next greater
+ * power of two number of buckets.
+ */
+ nelem = (nelem - 1) / hashp->FFACTOR + 1;
+
+ l2 = __log2(MAX(nelem, 2));
+ nbuckets = 1 << l2;
+
+ hashp->SPARES[l2] = l2 + 1;
+ hashp->SPARES[l2 + 1] = l2 + 1;
+ hashp->OVFL_POINT = l2;
+ hashp->LAST_FREED = 2;
+
+ /* First bitmap page is at: splitpoint l2 page offset 1 */
+ if (__ibitmap(hashp, OADDR_OF(l2, 1), l2 + 1, 0))
+ return (-1);
+
+ hashp->MAX_BUCKET = hashp->LOW_MASK = nbuckets - 1;
+ hashp->HIGH_MASK = (nbuckets << 1) - 1;
+ hashp->HDRPAGES = ((MAX(sizeof(HASHHDR), MINHDRSIZE) - 1) >>
+ hashp->BSHIFT) + 1;
+
+ nsegs = (nbuckets - 1) / hashp->SGSIZE + 1;
+ nsegs = 1 << __log2(nsegs);
+
+ if (nsegs > hashp->DSIZE)
+ hashp->DSIZE = nsegs;
+ return (alloc_segs(hashp, nsegs));
+}
+
+/********************** DESTROY/CLOSE ROUTINES ************************/
+
+/*
+ * Flushes any changes to the file if necessary and destroys the hashp
+ * structure, freeing all allocated space.
+ */
+static int
+hdestroy(hashp)
+ HTAB *hashp;
+{
+ int i, save_errno;
+
+ save_errno = 0;
+
+#ifdef HASH_STATISTICS
+ (void)fprintf(stderr, "hdestroy: accesses %ld collisions %ld\n",
+ hash_accesses, hash_collisions);
+ (void)fprintf(stderr, "hdestroy: expansions %ld\n",
+ hash_expansions);
+ (void)fprintf(stderr, "hdestroy: overflows %ld\n",
+ hash_overflows);
+ (void)fprintf(stderr, "keys %ld maxp %d segmentcount %d\n",
+ hashp->NKEYS, hashp->MAX_BUCKET, hashp->nsegs);
+
+ for (i = 0; i < NCACHED; i++)
+ (void)fprintf(stderr,
+ "spares[%d] = %d\n", i, hashp->SPARES[i]);
+#endif
+ /*
+ * Call on buffer manager to free buffers, and if required,
+ * write them to disk.
+ */
+ if (__buf_free(hashp, 1, hashp->save_file))
+ save_errno = errno;
+ if (hashp->dir) {
+ free(*hashp->dir); /* Free initial segments */
+ /* Free extra segments */
+ while (hashp->exsegs--)
+ free(hashp->dir[--hashp->nsegs]);
+ free(hashp->dir);
+ }
+ if (flush_meta(hashp) && !save_errno)
+ save_errno = errno;
+ /* Free Bigmaps */
+ for (i = 0; i < hashp->nmaps; i++)
+ if (hashp->mapp[i])
+ free(hashp->mapp[i]);
+
+ if (hashp->fp != -1)
+ (void)close(hashp->fp);
+
+ free(hashp);
+
+ if (save_errno) {
+ errno = save_errno;
+ return (ERROR);
+ }
+ return (SUCCESS);
+}
+/*
+ * Write modified pages to disk
+ *
+ * Returns:
+ * 0 == OK
+ * -1 ERROR
+ */
+static int
+hash_sync(dbp, flags)
+ const DB *dbp;
+ u_int32_t flags;
+{
+ HTAB *hashp;
+
+ if (flags != 0) {
+ errno = EINVAL;
+ return (ERROR);
+ }
+
+ if (!dbp)
+ return (ERROR);
+
+ hashp = (HTAB *)dbp->internal;
+ if (!hashp->save_file)
+ return (0);
+ if (__buf_free(hashp, 0, 1) || flush_meta(hashp))
+ return (ERROR);
+ hashp->new_file = 0;
+ return (0);
+}
+
+/*
+ * Returns:
+ * 0 == OK
+ * -1 indicates that errno should be set
+ */
+static int
+flush_meta(hashp)
+ HTAB *hashp;
+{
+ HASHHDR *whdrp;
+#if BYTE_ORDER == LITTLE_ENDIAN
+ HASHHDR whdr;
+#endif
+ int fp, i, wsize;
+
+ if (!hashp->save_file)
+ return (0);
+ hashp->MAGIC = HASHMAGIC;
+ hashp->VERSION = HASHVERSION;
+ hashp->H_CHARKEY = hashp->hash(CHARKEY, sizeof(CHARKEY));
+
+ fp = hashp->fp;
+ whdrp = &hashp->hdr;
+#if BYTE_ORDER == LITTLE_ENDIAN
+ whdrp = &whdr;
+ swap_header_copy(&hashp->hdr, whdrp);
+#endif
+ if ((lseek(fp, (off_t)0, SEEK_SET) == -1) ||
+ ((wsize = write(fp, whdrp, sizeof(HASHHDR))) == -1))
+ return (-1);
+ else
+ if (wsize != sizeof(HASHHDR)) {
+ errno = EFTYPE;
+ hashp->errno = errno;
+ return (-1);
+ }
+ for (i = 0; i < NCACHED; i++)
+ if (hashp->mapp[i])
+ if (__put_page(hashp, (char *)hashp->mapp[i],
+ hashp->BITMAPS[i], 0, 1))
+ return (-1);
+ return (0);
+}
+
+/*******************************SEARCH ROUTINES *****************************/
+/*
+ * All the access routines return
+ *
+ * Returns:
+ * 0 on SUCCESS
+ * 1 to indicate an external ERROR (i.e. key not found, etc)
+ * -1 to indicate an internal ERROR (i.e. out of memory, etc)
+ */
+static int
+hash_get(dbp, key, data, flag)
+ const DB *dbp;
+ const DBT *key;
+ DBT *data;
+ u_int32_t flag;
+{
+ HTAB *hashp;
+
+ hashp = (HTAB *)dbp->internal;
+ if (flag) {
+ hashp->errno = errno = EINVAL;
+ return (ERROR);
+ }
+ return (hash_access(hashp, HASH_GET, (DBT *)key, data));
+}
+
+static int
+hash_put(dbp, key, data, flag)
+ const DB *dbp;
+ DBT *key;
+ const DBT *data;
+ u_int32_t flag;
+{
+ HTAB *hashp;
+
+ hashp = (HTAB *)dbp->internal;
+ if (flag && flag != R_NOOVERWRITE) {
+ hashp->errno = errno = EINVAL;
+ return (ERROR);
+ }
+ if ((hashp->flags & O_ACCMODE) == O_RDONLY) {
+ hashp->errno = errno = EPERM;
+ return (ERROR);
+ }
+ return (hash_access(hashp, flag == R_NOOVERWRITE ?
+ HASH_PUTNEW : HASH_PUT, (DBT *)key, (DBT *)data));
+}
+
+static int
+hash_delete(dbp, key, flag)
+ const DB *dbp;
+ const DBT *key;
+ u_int32_t flag; /* Ignored */
+{
+ HTAB *hashp;
+
+ hashp = (HTAB *)dbp->internal;
+ if (flag && flag != R_CURSOR) {
+ hashp->errno = errno = EINVAL;
+ return (ERROR);
+ }
+ if ((hashp->flags & O_ACCMODE) == O_RDONLY) {
+ hashp->errno = errno = EPERM;
+ return (ERROR);
+ }
+ return (hash_access(hashp, HASH_DELETE, (DBT *)key, NULL));
+}
+
+/*
+ * Assume that hashp has been set in wrapper routine.
+ */
+static int
+hash_access(hashp, action, key, val)
+ HTAB *hashp;
+ ACTION action;
+ DBT *key, *val;
+{
+ register BUFHEAD *rbufp;
+ BUFHEAD *bufp, *save_bufp;
+ register u_int16_t *bp;
+ register int n, ndx, off, size;
+ register char *kp;
+ u_int16_t pageno;
+
+#ifdef HASH_STATISTICS
+ hash_accesses++;
+#endif
+
+ off = hashp->BSIZE;
+ size = key->size;
+ kp = (char *)key->data;
+ rbufp = __get_buf(hashp, __call_hash(hashp, kp, size), NULL, 0);
+ if (!rbufp)
+ return (ERROR);
+ save_bufp = rbufp;
+
+ /* Pin the bucket chain */
+ rbufp->flags |= BUF_PIN;
+ for (bp = (u_int16_t *)rbufp->page, n = *bp++, ndx = 1; ndx < n;)
+ if (bp[1] >= REAL_KEY) {
+ /* Real key/data pair */
+ if (size == off - *bp &&
+ memcmp(kp, rbufp->page + *bp, size) == 0)
+ goto found;
+ off = bp[1];
+#ifdef HASH_STATISTICS
+ hash_collisions++;
+#endif
+ bp += 2;
+ ndx += 2;
+ } else if (bp[1] == OVFLPAGE) {
+ rbufp = __get_buf(hashp, *bp, rbufp, 0);
+ if (!rbufp) {
+ save_bufp->flags &= ~BUF_PIN;
+ return (ERROR);
+ }
+ /* FOR LOOP INIT */
+ bp = (u_int16_t *)rbufp->page;
+ n = *bp++;
+ ndx = 1;
+ off = hashp->BSIZE;
+ } else if (bp[1] < REAL_KEY) {
+ if ((ndx =
+ __find_bigpair(hashp, rbufp, ndx, kp, size)) > 0)
+ goto found;
+ if (ndx == -2) {
+ bufp = rbufp;
+ if (!(pageno =
+ __find_last_page(hashp, &bufp))) {
+ ndx = 0;
+ rbufp = bufp;
+ break; /* FOR */
+ }
+ rbufp = __get_buf(hashp, pageno, bufp, 0);
+ if (!rbufp) {
+ save_bufp->flags &= ~BUF_PIN;
+ return (ERROR);
+ }
+ /* FOR LOOP INIT */
+ bp = (u_int16_t *)rbufp->page;
+ n = *bp++;
+ ndx = 1;
+ off = hashp->BSIZE;
+ } else {
+ save_bufp->flags &= ~BUF_PIN;
+ return (ERROR);
+ }
+ }
+
+ /* Not found */
+ switch (action) {
+ case HASH_PUT:
+ case HASH_PUTNEW:
+ if (__addel(hashp, rbufp, key, val)) {
+ save_bufp->flags &= ~BUF_PIN;
+ return (ERROR);
+ } else {
+ save_bufp->flags &= ~BUF_PIN;
+ return (SUCCESS);
+ }
+ case HASH_GET:
+ case HASH_DELETE:
+ default:
+ save_bufp->flags &= ~BUF_PIN;
+ return (ABNORMAL);
+ }
+
+found:
+ switch (action) {
+ case HASH_PUTNEW:
+ save_bufp->flags &= ~BUF_PIN;
+ return (ABNORMAL);
+ case HASH_GET:
+ bp = (u_int16_t *)rbufp->page;
+ if (bp[ndx + 1] < REAL_KEY) {
+ if (__big_return(hashp, rbufp, ndx, val, 0))
+ return (ERROR);
+ } else {
+ val->data = (u_char *)rbufp->page + (int)bp[ndx + 1];
+ val->size = bp[ndx] - bp[ndx + 1];
+ }
+ break;
+ case HASH_PUT:
+ if ((__delpair(hashp, rbufp, ndx)) ||
+ (__addel(hashp, rbufp, key, val))) {
+ save_bufp->flags &= ~BUF_PIN;
+ return (ERROR);
+ }
+ break;
+ case HASH_DELETE:
+ if (__delpair(hashp, rbufp, ndx))
+ return (ERROR);
+ break;
+ default:
+ abort();
+ }
+ save_bufp->flags &= ~BUF_PIN;
+ return (SUCCESS);
+}
+
+static int
+hash_seq(dbp, key, data, flag)
+ const DB *dbp;
+ DBT *key, *data;
+ u_int32_t flag;
+{
+ register u_int32_t bucket;
+ register BUFHEAD *bufp;
+ HTAB *hashp;
+ u_int16_t *bp, ndx;
+
+ hashp = (HTAB *)dbp->internal;
+ if (flag && flag != R_FIRST && flag != R_NEXT) {
+ hashp->errno = errno = EINVAL;
+ return (ERROR);
+ }
+#ifdef HASH_STATISTICS
+ hash_accesses++;
+#endif
+ if ((hashp->cbucket < 0) || (flag == R_FIRST)) {
+ hashp->cbucket = 0;
+ hashp->cndx = 1;
+ hashp->cpage = NULL;
+ }
+
+ for (bp = NULL; !bp || !bp[0]; ) {
+ if (!(bufp = hashp->cpage)) {
+ for (bucket = hashp->cbucket;
+ bucket <= hashp->MAX_BUCKET;
+ bucket++, hashp->cndx = 1) {
+ bufp = __get_buf(hashp, bucket, NULL, 0);
+ if (!bufp)
+ return (ERROR);
+ hashp->cpage = bufp;
+ bp = (u_int16_t *)bufp->page;
+ if (bp[0])
+ break;
+ }
+ hashp->cbucket = bucket;
+ if (hashp->cbucket > hashp->MAX_BUCKET) {
+ hashp->cbucket = -1;
+ return (ABNORMAL);
+ }
+ } else
+ bp = (u_int16_t *)hashp->cpage->page;
+
+#ifdef DEBUG
+ assert(bp);
+ assert(bufp);
+#endif
+ while (bp[hashp->cndx + 1] == OVFLPAGE) {
+ bufp = hashp->cpage =
+ __get_buf(hashp, bp[hashp->cndx], bufp, 0);
+ if (!bufp)
+ return (ERROR);
+ bp = (u_int16_t *)(bufp->page);
+ hashp->cndx = 1;
+ }
+ if (!bp[0]) {
+ hashp->cpage = NULL;
+ ++hashp->cbucket;
+ }
+ }
+ ndx = hashp->cndx;
+ if (bp[ndx + 1] < REAL_KEY) {
+ if (__big_keydata(hashp, bufp, key, data, 1))
+ return (ERROR);
+ } else {
+ key->data = (u_char *)hashp->cpage->page + bp[ndx];
+ key->size = (ndx > 1 ? bp[ndx - 1] : hashp->BSIZE) - bp[ndx];
+ data->data = (u_char *)hashp->cpage->page + bp[ndx + 1];
+ data->size = bp[ndx] - bp[ndx + 1];
+ ndx += 2;
+ if (ndx > bp[0]) {
+ hashp->cpage = NULL;
+ hashp->cbucket++;
+ hashp->cndx = 1;
+ } else
+ hashp->cndx = ndx;
+ }
+ return (SUCCESS);
+}
+
+/********************************* UTILITIES ************************/
+
+/*
+ * Returns:
+ * 0 ==> OK
+ * -1 ==> Error
+ */
+extern int
+__expand_table(hashp)
+ HTAB *hashp;
+{
+ u_int32_t old_bucket, new_bucket;
+ int dirsize, new_segnum, spare_ndx;
+
+#ifdef HASH_STATISTICS
+ hash_expansions++;
+#endif
+ new_bucket = ++hashp->MAX_BUCKET;
+ old_bucket = (hashp->MAX_BUCKET & hashp->LOW_MASK);
+
+ new_segnum = new_bucket >> hashp->SSHIFT;
+
+ /* Check if we need a new segment */
+ if (new_segnum >= hashp->nsegs) {
+ /* Check if we need to expand directory */
+ if (new_segnum >= hashp->DSIZE) {
+ /* Reallocate directory */
+ dirsize = hashp->DSIZE * sizeof(SEGMENT *);
+ if (!hash_realloc(&hashp->dir, dirsize, dirsize << 1))
+ return (-1);
+ hashp->DSIZE = dirsize << 1;
+ }
+ if ((hashp->dir[new_segnum] =
+ (SEGMENT)calloc(hashp->SGSIZE, sizeof(SEGMENT))) == NULL)
+ return (-1);
+ hashp->exsegs++;
+ hashp->nsegs++;
+ }
+ /*
+ * If the split point is increasing (MAX_BUCKET's log base 2
+ * * increases), we need to copy the current contents of the spare
+ * split bucket to the next bucket.
+ */
+ spare_ndx = __log2(hashp->MAX_BUCKET + 1);
+ if (spare_ndx > hashp->OVFL_POINT) {
+ hashp->SPARES[spare_ndx] = hashp->SPARES[hashp->OVFL_POINT];
+ hashp->OVFL_POINT = spare_ndx;
+ }
+
+ if (new_bucket > hashp->HIGH_MASK) {
+ /* Starting a new doubling */
+ hashp->LOW_MASK = hashp->HIGH_MASK;
+ hashp->HIGH_MASK = new_bucket | hashp->LOW_MASK;
+ }
+ /* Relocate records to the new bucket */
+ return (__split_page(hashp, old_bucket, new_bucket));
+}
+
+/*
+ * If realloc guarantees that the pointer is not destroyed if the realloc
+ * fails, then this routine can go away.
+ */
+static void *
+hash_realloc(p_ptr, oldsize, newsize)
+ SEGMENT **p_ptr;
+ int oldsize, newsize;
+{
+ register void *p;
+
+ if (p = malloc(newsize)) {
+ memmove(p, *p_ptr, oldsize);
+ memset((char *)p + oldsize, 0, newsize - oldsize);
+ free(*p_ptr);
+ *p_ptr = p;
+ }
+ return (p);
+}
+
+extern u_int32_t
+__call_hash(hashp, k, len)
+ HTAB *hashp;
+ char *k;
+ int len;
+{
+ int n, bucket;
+
+ n = hashp->hash(k, len);
+ bucket = n & hashp->HIGH_MASK;
+ if (bucket > hashp->MAX_BUCKET)
+ bucket = bucket & hashp->LOW_MASK;
+ return (bucket);
+}
+
+/*
+ * Allocate segment table. On error, destroy the table and set errno.
+ *
+ * Returns 0 on success
+ */
+static int
+alloc_segs(hashp, nsegs)
+ HTAB *hashp;
+ int nsegs;
+{
+ register int i;
+ register SEGMENT store;
+
+ int save_errno;
+
+ if ((hashp->dir =
+ (SEGMENT *)calloc(hashp->DSIZE, sizeof(SEGMENT *))) == NULL) {
+ save_errno = errno;
+ (void)hdestroy(hashp);
+ errno = save_errno;
+ return (-1);
+ }
+ /* Allocate segments */
+ if ((store =
+ (SEGMENT)calloc(nsegs << hashp->SSHIFT, sizeof(SEGMENT))) == NULL) {
+ save_errno = errno;
+ (void)hdestroy(hashp);
+ errno = save_errno;
+ return (-1);
+ }
+ for (i = 0; i < nsegs; i++, hashp->nsegs++)
+ hashp->dir[i] = &store[i << hashp->SSHIFT];
+ return (0);
+}
+
+#if BYTE_ORDER == LITTLE_ENDIAN
+/*
+ * Hashp->hdr needs to be byteswapped.
+ */
+static void
+swap_header_copy(srcp, destp)
+ HASHHDR *srcp, *destp;
+{
+ int i;
+
+ P_32_COPY(srcp->magic, destp->magic);
+ P_32_COPY(srcp->version, destp->version);
+ P_32_COPY(srcp->lorder, destp->lorder);
+ P_32_COPY(srcp->bsize, destp->bsize);
+ P_32_COPY(srcp->bshift, destp->bshift);
+ P_32_COPY(srcp->dsize, destp->dsize);
+ P_32_COPY(srcp->ssize, destp->ssize);
+ P_32_COPY(srcp->sshift, destp->sshift);
+ P_32_COPY(srcp->ovfl_point, destp->ovfl_point);
+ P_32_COPY(srcp->last_freed, destp->last_freed);
+ P_32_COPY(srcp->max_bucket, destp->max_bucket);
+ P_32_COPY(srcp->high_mask, destp->high_mask);
+ P_32_COPY(srcp->low_mask, destp->low_mask);
+ P_32_COPY(srcp->ffactor, destp->ffactor);
+ P_32_COPY(srcp->nkeys, destp->nkeys);
+ P_32_COPY(srcp->hdrpages, destp->hdrpages);
+ P_32_COPY(srcp->h_charkey, destp->h_charkey);
+ for (i = 0; i < NCACHED; i++) {
+ P_32_COPY(srcp->spares[i], destp->spares[i]);
+ P_16_COPY(srcp->bitmaps[i], destp->bitmaps[i]);
+ }
+}
+
+static void
+swap_header(hashp)
+ HTAB *hashp;
+{
+ HASHHDR *hdrp;
+ int i;
+
+ hdrp = &hashp->hdr;
+
+ M_32_SWAP(hdrp->magic);
+ M_32_SWAP(hdrp->version);
+ M_32_SWAP(hdrp->lorder);
+ M_32_SWAP(hdrp->bsize);
+ M_32_SWAP(hdrp->bshift);
+ M_32_SWAP(hdrp->dsize);
+ M_32_SWAP(hdrp->ssize);
+ M_32_SWAP(hdrp->sshift);
+ M_32_SWAP(hdrp->ovfl_point);
+ M_32_SWAP(hdrp->last_freed);
+ M_32_SWAP(hdrp->max_bucket);
+ M_32_SWAP(hdrp->high_mask);
+ M_32_SWAP(hdrp->low_mask);
+ M_32_SWAP(hdrp->ffactor);
+ M_32_SWAP(hdrp->nkeys);
+ M_32_SWAP(hdrp->hdrpages);
+ M_32_SWAP(hdrp->h_charkey);
+ for (i = 0; i < NCACHED; i++) {
+ M_32_SWAP(hdrp->spares[i]);
+ M_16_SWAP(hdrp->bitmaps[i]);
+ }
+}
+#endif
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)hash.h 8.3 (Berkeley) 5/31/94
+ */
+
+/* Operations */
+typedef enum {
+ HASH_GET, HASH_PUT, HASH_PUTNEW, HASH_DELETE, HASH_FIRST, HASH_NEXT
+} ACTION;
+
+/* Buffer Management structures */
+typedef struct _bufhead BUFHEAD;
+
+struct _bufhead {
+ BUFHEAD *prev; /* LRU links */
+ BUFHEAD *next; /* LRU links */
+ BUFHEAD *ovfl; /* Overflow page buffer header */
+ u_int32_t addr; /* Address of this page */
+ char *page; /* Actual page data */
+ char flags;
+#define BUF_MOD 0x0001
+#define BUF_DISK 0x0002
+#define BUF_BUCKET 0x0004
+#define BUF_PIN 0x0008
+};
+
+#define IS_BUCKET(X) ((X) & BUF_BUCKET)
+
+typedef BUFHEAD **SEGMENT;
+
+/* Hash Table Information */
+typedef struct hashhdr { /* Disk resident portion */
+ int magic; /* Magic NO for hash tables */
+ int version; /* Version ID */
+ u_int32_t lorder; /* Byte Order */
+ int bsize; /* Bucket/Page Size */
+ int bshift; /* Bucket shift */
+ int dsize; /* Directory Size */
+ int ssize; /* Segment Size */
+ int sshift; /* Segment shift */
+ int ovfl_point; /* Where overflow pages are being
+ * allocated */
+ int last_freed; /* Last overflow page freed */
+ int max_bucket; /* ID of Maximum bucket in use */
+ int high_mask; /* Mask to modulo into entire table */
+ int low_mask; /* Mask to modulo into lower half of
+ * table */
+ int ffactor; /* Fill factor */
+ int nkeys; /* Number of keys in hash table */
+ int hdrpages; /* Size of table header */
+ int h_charkey; /* value of hash(CHARKEY) */
+#define NCACHED 32 /* number of bit maps and spare
+ * points */
+ int spares[NCACHED];/* spare pages for overflow */
+ u_int16_t bitmaps[NCACHED]; /* address of overflow page
+ * bitmaps */
+} HASHHDR;
+
+typedef struct htab { /* Memory resident data structure */
+ HASHHDR hdr; /* Header */
+ int nsegs; /* Number of allocated segments */
+ int exsegs; /* Number of extra allocated
+ * segments */
+ u_int32_t /* Hash function */
+ (*hash)__P((const void *, size_t));
+ int flags; /* Flag values */
+ int fp; /* File pointer */
+ char *tmp_buf; /* Temporary Buffer for BIG data */
+ char *tmp_key; /* Temporary Buffer for BIG keys */
+ BUFHEAD *cpage; /* Current page */
+ int cbucket; /* Current bucket */
+ int cndx; /* Index of next item on cpage */
+ int errno; /* Error Number -- for DBM
+ * compatability */
+ int new_file; /* Indicates if fd is backing store
+ * or no */
+ int save_file; /* Indicates whether we need to flush
+ * file at
+ * exit */
+ u_int32_t *mapp[NCACHED]; /* Pointers to page maps */
+ int nmaps; /* Initial number of bitmaps */
+ int nbufs; /* Number of buffers left to
+ * allocate */
+ BUFHEAD bufhead; /* Header of buffer lru list */
+ SEGMENT *dir; /* Hash Bucket directory */
+} HTAB;
+
+/*
+ * Constants
+ */
+#define MAX_BSIZE 65536 /* 2^16 */
+#define MIN_BUFFERS 6
+#define MINHDRSIZE 512
+#define DEF_BUFSIZE 65536 /* 64 K */
+#define DEF_BUCKET_SIZE 4096
+#define DEF_BUCKET_SHIFT 12 /* log2(BUCKET) */
+#define DEF_SEGSIZE 256
+#define DEF_SEGSIZE_SHIFT 8 /* log2(SEGSIZE) */
+#define DEF_DIRSIZE 256
+#define DEF_FFACTOR 65536
+#define MIN_FFACTOR 4
+#define SPLTMAX 8
+#define CHARKEY "%$sniglet^&"
+#define NUMKEY 1038583
+#define BYTE_SHIFT 3
+#define INT_TO_BYTE 2
+#define INT_BYTE_SHIFT 5
+#define ALL_SET ((u_int32_t)0xFFFFFFFF)
+#define ALL_CLEAR 0
+
+#define PTROF(X) ((BUFHEAD *)((ptrdiff_t)(X)&~0x3))
+#define ISMOD(X) ((u_int32_t)(ptrdiff_t)(X)&0x1)
+#define DOMOD(X) ((X) = (char *)((ptrdiff_t)(X)|0x1))
+#define ISDISK(X) ((u_int32_t)(ptrdiff_t)(X)&0x2)
+#define DODISK(X) ((X) = (char *)((ptrdiff_t)(X)|0x2))
+
+#define BITS_PER_MAP 32
+
+/* Given the address of the beginning of a big map, clear/set the nth bit */
+#define CLRBIT(A, N) ((A)[(N)/BITS_PER_MAP] &= ~(1<<((N)%BITS_PER_MAP)))
+#define SETBIT(A, N) ((A)[(N)/BITS_PER_MAP] |= (1<<((N)%BITS_PER_MAP)))
+#define ISSET(A, N) ((A)[(N)/BITS_PER_MAP] & (1<<((N)%BITS_PER_MAP)))
+
+/* Overflow management */
+/*
+ * Overflow page numbers are allocated per split point. At each doubling of
+ * the table, we can allocate extra pages. So, an overflow page number has
+ * the top 5 bits indicate which split point and the lower 11 bits indicate
+ * which page at that split point is indicated (pages within split points are
+ * numberered starting with 1).
+ */
+
+#define SPLITSHIFT 11
+#define SPLITMASK 0x7FF
+#define SPLITNUM(N) (((u_int32_t)(N)) >> SPLITSHIFT)
+#define OPAGENUM(N) ((N) & SPLITMASK)
+#define OADDR_OF(S,O) ((u_int32_t)((u_int32_t)(S) << SPLITSHIFT) + (O))
+
+#define BUCKET_TO_PAGE(B) \
+ (B) + hashp->HDRPAGES + ((B) ? hashp->SPARES[__log2((B)+1)-1] : 0)
+#define OADDR_TO_PAGE(B) \
+ BUCKET_TO_PAGE ( (1 << SPLITNUM((B))) -1 ) + OPAGENUM((B));
+
+/*
+ * page.h contains a detailed description of the page format.
+ *
+ * Normally, keys and data are accessed from offset tables in the top of
+ * each page which point to the beginning of the key and data. There are
+ * four flag values which may be stored in these offset tables which indicate
+ * the following:
+ *
+ *
+ * OVFLPAGE Rather than a key data pair, this pair contains
+ * the address of an overflow page. The format of
+ * the pair is:
+ * OVERFLOW_PAGE_NUMBER OVFLPAGE
+ *
+ * PARTIAL_KEY This must be the first key/data pair on a page
+ * and implies that page contains only a partial key.
+ * That is, the key is too big to fit on a single page
+ * so it starts on this page and continues on the next.
+ * The format of the page is:
+ * KEY_OFF PARTIAL_KEY OVFL_PAGENO OVFLPAGE
+ *
+ * KEY_OFF -- offset of the beginning of the key
+ * PARTIAL_KEY -- 1
+ * OVFL_PAGENO - page number of the next overflow page
+ * OVFLPAGE -- 0
+ *
+ * FULL_KEY This must be the first key/data pair on the page. It
+ * is used in two cases.
+ *
+ * Case 1:
+ * There is a complete key on the page but no data
+ * (because it wouldn't fit). The next page contains
+ * the data.
+ *
+ * Page format it:
+ * KEY_OFF FULL_KEY OVFL_PAGENO OVFL_PAGE
+ *
+ * KEY_OFF -- offset of the beginning of the key
+ * FULL_KEY -- 2
+ * OVFL_PAGENO - page number of the next overflow page
+ * OVFLPAGE -- 0
+ *
+ * Case 2:
+ * This page contains no key, but part of a large
+ * data field, which is continued on the next page.
+ *
+ * Page format it:
+ * DATA_OFF FULL_KEY OVFL_PAGENO OVFL_PAGE
+ *
+ * KEY_OFF -- offset of the beginning of the data on
+ * this page
+ * FULL_KEY -- 2
+ * OVFL_PAGENO - page number of the next overflow page
+ * OVFLPAGE -- 0
+ *
+ * FULL_KEY_DATA
+ * This must be the first key/data pair on the page.
+ * There are two cases:
+ *
+ * Case 1:
+ * This page contains a key and the beginning of the
+ * data field, but the data field is continued on the
+ * next page.
+ *
+ * Page format is:
+ * KEY_OFF FULL_KEY_DATA OVFL_PAGENO DATA_OFF
+ *
+ * KEY_OFF -- offset of the beginning of the key
+ * FULL_KEY_DATA -- 3
+ * OVFL_PAGENO - page number of the next overflow page
+ * DATA_OFF -- offset of the beginning of the data
+ *
+ * Case 2:
+ * This page contains the last page of a big data pair.
+ * There is no key, only the tail end of the data
+ * on this page.
+ *
+ * Page format is:
+ * DATA_OFF FULL_KEY_DATA <OVFL_PAGENO> <OVFLPAGE>
+ *
+ * DATA_OFF -- offset of the beginning of the data on
+ * this page
+ * FULL_KEY_DATA -- 3
+ * OVFL_PAGENO - page number of the next overflow page
+ * OVFLPAGE -- 0
+ *
+ * OVFL_PAGENO and OVFLPAGE are optional (they are
+ * not present if there is no next page).
+ */
+
+#define OVFLPAGE 0
+#define PARTIAL_KEY 1
+#define FULL_KEY 2
+#define FULL_KEY_DATA 3
+#define REAL_KEY 4
+
+/* Short hands for accessing structure */
+#define BSIZE hdr.bsize
+#define BSHIFT hdr.bshift
+#define DSIZE hdr.dsize
+#define SGSIZE hdr.ssize
+#define SSHIFT hdr.sshift
+#define LORDER hdr.lorder
+#define OVFL_POINT hdr.ovfl_point
+#define LAST_FREED hdr.last_freed
+#define MAX_BUCKET hdr.max_bucket
+#define FFACTOR hdr.ffactor
+#define HIGH_MASK hdr.high_mask
+#define LOW_MASK hdr.low_mask
+#define NKEYS hdr.nkeys
+#define HDRPAGES hdr.hdrpages
+#define SPARES hdr.spares
+#define BITMAPS hdr.bitmaps
+#define VERSION hdr.version
+#define MAGIC hdr.magic
+#define NEXT_FREE hdr.next_free
+#define H_CHARKEY hdr.h_charkey
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)hash_bigkey.c 8.3 (Berkeley) 5/31/94";
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * PACKAGE: hash
+ * DESCRIPTION:
+ * Big key/data handling for the hashing package.
+ *
+ * ROUTINES:
+ * External
+ * __big_keydata
+ * __big_split
+ * __big_insert
+ * __big_return
+ * __big_delete
+ * __find_last_page
+ * Internal
+ * collect_key
+ * collect_data
+ */
+
+#include <sys/param.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#ifdef DEBUG
+#include <assert.h>
+#endif
+
+#include <db.h>
+#include "hash.h"
+#include "page.h"
+#include "extern.h"
+
+static int collect_key __P((HTAB *, BUFHEAD *, int, DBT *, int));
+static int collect_data __P((HTAB *, BUFHEAD *, int, int));
+
+/*
+ * Big_insert
+ *
+ * You need to do an insert and the key/data pair is too big
+ *
+ * Returns:
+ * 0 ==> OK
+ *-1 ==> ERROR
+ */
+extern int
+__big_insert(hashp, bufp, key, val)
+ HTAB *hashp;
+ BUFHEAD *bufp;
+ const DBT *key, *val;
+{
+ register u_int16_t *p;
+ int key_size, n, val_size;
+ u_int16_t space, move_bytes, off;
+ char *cp, *key_data, *val_data;
+
+ cp = bufp->page; /* Character pointer of p. */
+ p = (u_int16_t *)cp;
+
+ key_data = (char *)key->data;
+ key_size = key->size;
+ val_data = (char *)val->data;
+ val_size = val->size;
+
+ /* First move the Key */
+ for (space = FREESPACE(p) - BIGOVERHEAD; key_size;
+ space = FREESPACE(p) - BIGOVERHEAD) {
+ move_bytes = MIN(space, key_size);
+ off = OFFSET(p) - move_bytes;
+ memmove(cp + off, key_data, move_bytes);
+ key_size -= move_bytes;
+ key_data += move_bytes;
+ n = p[0];
+ p[++n] = off;
+ p[0] = ++n;
+ FREESPACE(p) = off - PAGE_META(n);
+ OFFSET(p) = off;
+ p[n] = PARTIAL_KEY;
+ bufp = __add_ovflpage(hashp, bufp);
+ if (!bufp)
+ return (-1);
+ n = p[0];
+ if (!key_size)
+ if (FREESPACE(p)) {
+ move_bytes = MIN(FREESPACE(p), val_size);
+ off = OFFSET(p) - move_bytes;
+ p[n] = off;
+ memmove(cp + off, val_data, move_bytes);
+ val_data += move_bytes;
+ val_size -= move_bytes;
+ p[n - 2] = FULL_KEY_DATA;
+ FREESPACE(p) = FREESPACE(p) - move_bytes;
+ OFFSET(p) = off;
+ } else
+ p[n - 2] = FULL_KEY;
+ p = (u_int16_t *)bufp->page;
+ cp = bufp->page;
+ bufp->flags |= BUF_MOD;
+ }
+
+ /* Now move the data */
+ for (space = FREESPACE(p) - BIGOVERHEAD; val_size;
+ space = FREESPACE(p) - BIGOVERHEAD) {
+ move_bytes = MIN(space, val_size);
+ /*
+ * Here's the hack to make sure that if the data ends on the
+ * same page as the key ends, FREESPACE is at least one.
+ */
+ if (space == val_size && val_size == val->size)
+ move_bytes--;
+ off = OFFSET(p) - move_bytes;
+ memmove(cp + off, val_data, move_bytes);
+ val_size -= move_bytes;
+ val_data += move_bytes;
+ n = p[0];
+ p[++n] = off;
+ p[0] = ++n;
+ FREESPACE(p) = off - PAGE_META(n);
+ OFFSET(p) = off;
+ if (val_size) {
+ p[n] = FULL_KEY;
+ bufp = __add_ovflpage(hashp, bufp);
+ if (!bufp)
+ return (-1);
+ cp = bufp->page;
+ p = (u_int16_t *)cp;
+ } else
+ p[n] = FULL_KEY_DATA;
+ bufp->flags |= BUF_MOD;
+ }
+ return (0);
+}
+
+/*
+ * Called when bufp's page contains a partial key (index should be 1)
+ *
+ * All pages in the big key/data pair except bufp are freed. We cannot
+ * free bufp because the page pointing to it is lost and we can't get rid
+ * of its pointer.
+ *
+ * Returns:
+ * 0 => OK
+ *-1 => ERROR
+ */
+extern int
+__big_delete(hashp, bufp)
+ HTAB *hashp;
+ BUFHEAD *bufp;
+{
+ register BUFHEAD *last_bfp, *rbufp;
+ u_int16_t *bp, pageno;
+ int key_done, n;
+
+ rbufp = bufp;
+ last_bfp = NULL;
+ bp = (u_int16_t *)bufp->page;
+ pageno = 0;
+ key_done = 0;
+
+ while (!key_done || (bp[2] != FULL_KEY_DATA)) {
+ if (bp[2] == FULL_KEY || bp[2] == FULL_KEY_DATA)
+ key_done = 1;
+
+ /*
+ * If there is freespace left on a FULL_KEY_DATA page, then
+ * the data is short and fits entirely on this page, and this
+ * is the last page.
+ */
+ if (bp[2] == FULL_KEY_DATA && FREESPACE(bp))
+ break;
+ pageno = bp[bp[0] - 1];
+ rbufp->flags |= BUF_MOD;
+ rbufp = __get_buf(hashp, pageno, rbufp, 0);
+ if (last_bfp)
+ __free_ovflpage(hashp, last_bfp);
+ last_bfp = rbufp;
+ if (!rbufp)
+ return (-1); /* Error. */
+ bp = (u_int16_t *)rbufp->page;
+ }
+
+ /*
+ * If we get here then rbufp points to the last page of the big
+ * key/data pair. Bufp points to the first one -- it should now be
+ * empty pointing to the next page after this pair. Can't free it
+ * because we don't have the page pointing to it.
+ */
+
+ /* This is information from the last page of the pair. */
+ n = bp[0];
+ pageno = bp[n - 1];
+
+ /* Now, bp is the first page of the pair. */
+ bp = (u_int16_t *)bufp->page;
+ if (n > 2) {
+ /* There is an overflow page. */
+ bp[1] = pageno;
+ bp[2] = OVFLPAGE;
+ bufp->ovfl = rbufp->ovfl;
+ } else
+ /* This is the last page. */
+ bufp->ovfl = NULL;
+ n -= 2;
+ bp[0] = n;
+ FREESPACE(bp) = hashp->BSIZE - PAGE_META(n);
+ OFFSET(bp) = hashp->BSIZE - 1;
+
+ bufp->flags |= BUF_MOD;
+ if (rbufp)
+ __free_ovflpage(hashp, rbufp);
+ if (last_bfp != rbufp)
+ __free_ovflpage(hashp, last_bfp);
+
+ hashp->NKEYS--;
+ return (0);
+}
+/*
+ * Returns:
+ * 0 = key not found
+ * -1 = get next overflow page
+ * -2 means key not found and this is big key/data
+ * -3 error
+ */
+extern int
+__find_bigpair(hashp, bufp, ndx, key, size)
+ HTAB *hashp;
+ BUFHEAD *bufp;
+ int ndx;
+ char *key;
+ int size;
+{
+ register u_int16_t *bp;
+ register char *p;
+ int ksize;
+ u_int16_t bytes;
+ char *kkey;
+
+ bp = (u_int16_t *)bufp->page;
+ p = bufp->page;
+ ksize = size;
+ kkey = key;
+
+ for (bytes = hashp->BSIZE - bp[ndx];
+ bytes <= size && bp[ndx + 1] == PARTIAL_KEY;
+ bytes = hashp->BSIZE - bp[ndx]) {
+ if (memcmp(p + bp[ndx], kkey, bytes))
+ return (-2);
+ kkey += bytes;
+ ksize -= bytes;
+ bufp = __get_buf(hashp, bp[ndx + 2], bufp, 0);
+ if (!bufp)
+ return (-3);
+ p = bufp->page;
+ bp = (u_int16_t *)p;
+ ndx = 1;
+ }
+
+ if (bytes != ksize || memcmp(p + bp[ndx], kkey, bytes)) {
+#ifdef HASH_STATISTICS
+ ++hash_collisions;
+#endif
+ return (-2);
+ } else
+ return (ndx);
+}
+
+/*
+ * Given the buffer pointer of the first overflow page of a big pair,
+ * find the end of the big pair
+ *
+ * This will set bpp to the buffer header of the last page of the big pair.
+ * It will return the pageno of the overflow page following the last page
+ * of the pair; 0 if there isn't any (i.e. big pair is the last key in the
+ * bucket)
+ */
+extern u_int16_t
+__find_last_page(hashp, bpp)
+ HTAB *hashp;
+ BUFHEAD **bpp;
+{
+ BUFHEAD *bufp;
+ u_int16_t *bp, pageno;
+ int n;
+
+ bufp = *bpp;
+ bp = (u_int16_t *)bufp->page;
+ for (;;) {
+ n = bp[0];
+
+ /*
+ * This is the last page if: the tag is FULL_KEY_DATA and
+ * either only 2 entries OVFLPAGE marker is explicit there
+ * is freespace on the page.
+ */
+ if (bp[2] == FULL_KEY_DATA &&
+ ((n == 2) || (bp[n] == OVFLPAGE) || (FREESPACE(bp))))
+ break;
+
+ pageno = bp[n - 1];
+ bufp = __get_buf(hashp, pageno, bufp, 0);
+ if (!bufp)
+ return (0); /* Need to indicate an error! */
+ bp = (u_int16_t *)bufp->page;
+ }
+
+ *bpp = bufp;
+ if (bp[0] > 2)
+ return (bp[3]);
+ else
+ return (0);
+}
+
+/*
+ * Return the data for the key/data pair that begins on this page at this
+ * index (index should always be 1).
+ */
+extern int
+__big_return(hashp, bufp, ndx, val, set_current)
+ HTAB *hashp;
+ BUFHEAD *bufp;
+ int ndx;
+ DBT *val;
+ int set_current;
+{
+ BUFHEAD *save_p;
+ u_int16_t *bp, len, off, save_addr;
+ char *tp;
+
+ bp = (u_int16_t *)bufp->page;
+ while (bp[ndx + 1] == PARTIAL_KEY) {
+ bufp = __get_buf(hashp, bp[bp[0] - 1], bufp, 0);
+ if (!bufp)
+ return (-1);
+ bp = (u_int16_t *)bufp->page;
+ ndx = 1;
+ }
+
+ if (bp[ndx + 1] == FULL_KEY) {
+ bufp = __get_buf(hashp, bp[bp[0] - 1], bufp, 0);
+ if (!bufp)
+ return (-1);
+ bp = (u_int16_t *)bufp->page;
+ save_p = bufp;
+ save_addr = save_p->addr;
+ off = bp[1];
+ len = 0;
+ } else
+ if (!FREESPACE(bp)) {
+ /*
+ * This is a hack. We can't distinguish between
+ * FULL_KEY_DATA that contains complete data or
+ * incomplete data, so we require that if the data
+ * is complete, there is at least 1 byte of free
+ * space left.
+ */
+ off = bp[bp[0]];
+ len = bp[1] - off;
+ save_p = bufp;
+ save_addr = bufp->addr;
+ bufp = __get_buf(hashp, bp[bp[0] - 1], bufp, 0);
+ if (!bufp)
+ return (-1);
+ bp = (u_int16_t *)bufp->page;
+ } else {
+ /* The data is all on one page. */
+ tp = (char *)bp;
+ off = bp[bp[0]];
+ val->data = (u_char *)tp + off;
+ val->size = bp[1] - off;
+ if (set_current) {
+ if (bp[0] == 2) { /* No more buckets in
+ * chain */
+ hashp->cpage = NULL;
+ hashp->cbucket++;
+ hashp->cndx = 1;
+ } else {
+ hashp->cpage = __get_buf(hashp,
+ bp[bp[0] - 1], bufp, 0);
+ if (!hashp->cpage)
+ return (-1);
+ hashp->cndx = 1;
+ if (!((u_int16_t *)
+ hashp->cpage->page)[0]) {
+ hashp->cbucket++;
+ hashp->cpage = NULL;
+ }
+ }
+ }
+ return (0);
+ }
+
+ val->size = collect_data(hashp, bufp, (int)len, set_current);
+ if (val->size == -1)
+ return (-1);
+ if (save_p->addr != save_addr) {
+ /* We are pretty short on buffers. */
+ errno = EINVAL; /* OUT OF BUFFERS */
+ return (-1);
+ }
+ memmove(hashp->tmp_buf, (save_p->page) + off, len);
+ val->data = (u_char *)hashp->tmp_buf;
+ return (0);
+}
+/*
+ * Count how big the total datasize is by recursing through the pages. Then
+ * allocate a buffer and copy the data as you recurse up.
+ */
+static int
+collect_data(hashp, bufp, len, set)
+ HTAB *hashp;
+ BUFHEAD *bufp;
+ int len, set;
+{
+ register u_int16_t *bp;
+ register char *p;
+ BUFHEAD *xbp;
+ u_int16_t save_addr;
+ int mylen, totlen;
+
+ p = bufp->page;
+ bp = (u_int16_t *)p;
+ mylen = hashp->BSIZE - bp[1];
+ save_addr = bufp->addr;
+
+ if (bp[2] == FULL_KEY_DATA) { /* End of Data */
+ totlen = len + mylen;
+ if (hashp->tmp_buf)
+ free(hashp->tmp_buf);
+ if ((hashp->tmp_buf = (char *)malloc(totlen)) == NULL)
+ return (-1);
+ if (set) {
+ hashp->cndx = 1;
+ if (bp[0] == 2) { /* No more buckets in chain */
+ hashp->cpage = NULL;
+ hashp->cbucket++;
+ } else {
+ hashp->cpage =
+ __get_buf(hashp, bp[bp[0] - 1], bufp, 0);
+ if (!hashp->cpage)
+ return (-1);
+ else if (!((u_int16_t *)hashp->cpage->page)[0]) {
+ hashp->cbucket++;
+ hashp->cpage = NULL;
+ }
+ }
+ }
+ } else {
+ xbp = __get_buf(hashp, bp[bp[0] - 1], bufp, 0);
+ if (!xbp || ((totlen =
+ collect_data(hashp, xbp, len + mylen, set)) < 1))
+ return (-1);
+ }
+ if (bufp->addr != save_addr) {
+ errno = EINVAL; /* Out of buffers. */
+ return (-1);
+ }
+ memmove(&hashp->tmp_buf[len], (bufp->page) + bp[1], mylen);
+ return (totlen);
+}
+
+/*
+ * Fill in the key and data for this big pair.
+ */
+extern int
+__big_keydata(hashp, bufp, key, val, set)
+ HTAB *hashp;
+ BUFHEAD *bufp;
+ DBT *key, *val;
+ int set;
+{
+ key->size = collect_key(hashp, bufp, 0, val, set);
+ if (key->size == -1)
+ return (-1);
+ key->data = (u_char *)hashp->tmp_key;
+ return (0);
+}
+
+/*
+ * Count how big the total key size is by recursing through the pages. Then
+ * collect the data, allocate a buffer and copy the key as you recurse up.
+ */
+static int
+collect_key(hashp, bufp, len, val, set)
+ HTAB *hashp;
+ BUFHEAD *bufp;
+ int len;
+ DBT *val;
+ int set;
+{
+ BUFHEAD *xbp;
+ char *p;
+ int mylen, totlen;
+ u_int16_t *bp, save_addr;
+
+ p = bufp->page;
+ bp = (u_int16_t *)p;
+ mylen = hashp->BSIZE - bp[1];
+
+ save_addr = bufp->addr;
+ totlen = len + mylen;
+ if (bp[2] == FULL_KEY || bp[2] == FULL_KEY_DATA) { /* End of Key. */
+ if (hashp->tmp_key != NULL)
+ free(hashp->tmp_key);
+ if ((hashp->tmp_key = (char *)malloc(totlen)) == NULL)
+ return (-1);
+ if (__big_return(hashp, bufp, 1, val, set))
+ return (-1);
+ } else {
+ xbp = __get_buf(hashp, bp[bp[0] - 1], bufp, 0);
+ if (!xbp || ((totlen =
+ collect_key(hashp, xbp, totlen, val, set)) < 1))
+ return (-1);
+ }
+ if (bufp->addr != save_addr) {
+ errno = EINVAL; /* MIS -- OUT OF BUFFERS */
+ return (-1);
+ }
+ memmove(&hashp->tmp_key[len], (bufp->page) + bp[1], mylen);
+ return (totlen);
+}
+
+/*
+ * Returns:
+ * 0 => OK
+ * -1 => error
+ */
+extern int
+__big_split(hashp, op, np, big_keyp, addr, obucket, ret)
+ HTAB *hashp;
+ BUFHEAD *op; /* Pointer to where to put keys that go in old bucket */
+ BUFHEAD *np; /* Pointer to new bucket page */
+ /* Pointer to first page containing the big key/data */
+ BUFHEAD *big_keyp;
+ int addr; /* Address of big_keyp */
+ u_int32_t obucket;/* Old Bucket */
+ SPLIT_RETURN *ret;
+{
+ register BUFHEAD *tmpp;
+ register u_int16_t *tp;
+ BUFHEAD *bp;
+ DBT key, val;
+ u_int32_t change;
+ u_int16_t free_space, n, off;
+
+ bp = big_keyp;
+
+ /* Now figure out where the big key/data goes */
+ if (__big_keydata(hashp, big_keyp, &key, &val, 0))
+ return (-1);
+ change = (__call_hash(hashp, key.data, key.size) != obucket);
+
+ if (ret->next_addr = __find_last_page(hashp, &big_keyp)) {
+ if (!(ret->nextp =
+ __get_buf(hashp, ret->next_addr, big_keyp, 0)))
+ return (-1);;
+ } else
+ ret->nextp = NULL;
+
+ /* Now make one of np/op point to the big key/data pair */
+#ifdef DEBUG
+ assert(np->ovfl == NULL);
+#endif
+ if (change)
+ tmpp = np;
+ else
+ tmpp = op;
+
+ tmpp->flags |= BUF_MOD;
+#ifdef DEBUG1
+ (void)fprintf(stderr,
+ "BIG_SPLIT: %d->ovfl was %d is now %d\n", tmpp->addr,
+ (tmpp->ovfl ? tmpp->ovfl->addr : 0), (bp ? bp->addr : 0));
+#endif
+ tmpp->ovfl = bp; /* one of op/np point to big_keyp */
+ tp = (u_int16_t *)tmpp->page;
+#ifdef DEBUG
+ assert(FREESPACE(tp) >= OVFLSIZE);
+#endif
+ n = tp[0];
+ off = OFFSET(tp);
+ free_space = FREESPACE(tp);
+ tp[++n] = (u_int16_t)addr;
+ tp[++n] = OVFLPAGE;
+ tp[0] = n;
+ OFFSET(tp) = off;
+ FREESPACE(tp) = free_space - OVFLSIZE;
+
+ /*
+ * Finally, set the new and old return values. BIG_KEYP contains a
+ * pointer to the last page of the big key_data pair. Make sure that
+ * big_keyp has no following page (2 elements) or create an empty
+ * following page.
+ */
+
+ ret->newp = np;
+ ret->oldp = op;
+
+ tp = (u_int16_t *)big_keyp->page;
+ big_keyp->flags |= BUF_MOD;
+ if (tp[0] > 2) {
+ /*
+ * There may be either one or two offsets on this page. If
+ * there is one, then the overflow page is linked on normally
+ * and tp[4] is OVFLPAGE. If there are two, tp[4] contains
+ * the second offset and needs to get stuffed in after the
+ * next overflow page is added.
+ */
+ n = tp[4];
+ free_space = FREESPACE(tp);
+ off = OFFSET(tp);
+ tp[0] -= 2;
+ FREESPACE(tp) = free_space + OVFLSIZE;
+ OFFSET(tp) = off;
+ tmpp = __add_ovflpage(hashp, big_keyp);
+ if (!tmpp)
+ return (-1);
+ tp[4] = n;
+ } else
+ tmpp = big_keyp;
+
+ if (change)
+ ret->newp = tmpp;
+ else
+ ret->oldp = tmpp;
+ return (0);
+}
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)hash_buf.c 8.5 (Berkeley) 7/15/94";
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * PACKAGE: hash
+ *
+ * DESCRIPTION:
+ * Contains buffer management
+ *
+ * ROUTINES:
+ * External
+ * __buf_init
+ * __get_buf
+ * __buf_free
+ * __reclaim_buf
+ * Internal
+ * newbuf
+ */
+
+#include <sys/param.h>
+
+#include <errno.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#ifdef DEBUG
+#include <assert.h>
+#endif
+
+#include <db.h>
+#include "hash.h"
+#include "page.h"
+#include "extern.h"
+
+static BUFHEAD *newbuf __P((HTAB *, u_int32_t, BUFHEAD *));
+
+/* Unlink B from its place in the lru */
+#define BUF_REMOVE(B) { \
+ (B)->prev->next = (B)->next; \
+ (B)->next->prev = (B)->prev; \
+}
+
+/* Insert B after P */
+#define BUF_INSERT(B, P) { \
+ (B)->next = (P)->next; \
+ (B)->prev = (P); \
+ (P)->next = (B); \
+ (B)->next->prev = (B); \
+}
+
+#define MRU hashp->bufhead.next
+#define LRU hashp->bufhead.prev
+
+#define MRU_INSERT(B) BUF_INSERT((B), &hashp->bufhead)
+#define LRU_INSERT(B) BUF_INSERT((B), LRU)
+
+/*
+ * We are looking for a buffer with address "addr". If prev_bp is NULL, then
+ * address is a bucket index. If prev_bp is not NULL, then it points to the
+ * page previous to an overflow page that we are trying to find.
+ *
+ * CAVEAT: The buffer header accessed via prev_bp's ovfl field may no longer
+ * be valid. Therefore, you must always verify that its address matches the
+ * address you are seeking.
+ */
+extern BUFHEAD *
+__get_buf(hashp, addr, prev_bp, newpage)
+ HTAB *hashp;
+ u_int32_t addr;
+ BUFHEAD *prev_bp;
+ int newpage; /* If prev_bp set, indicates a new overflow page. */
+{
+ register BUFHEAD *bp;
+ register u_int32_t is_disk_mask;
+ register int is_disk, segment_ndx;
+ SEGMENT segp;
+
+ is_disk = 0;
+ is_disk_mask = 0;
+ if (prev_bp) {
+ bp = prev_bp->ovfl;
+ if (!bp || (bp->addr != addr))
+ bp = NULL;
+ if (!newpage)
+ is_disk = BUF_DISK;
+ } else {
+ /* Grab buffer out of directory */
+ segment_ndx = addr & (hashp->SGSIZE - 1);
+
+ /* valid segment ensured by __call_hash() */
+ segp = hashp->dir[addr >> hashp->SSHIFT];
+#ifdef DEBUG
+ assert(segp != NULL);
+#endif
+ bp = PTROF(segp[segment_ndx]);
+ is_disk_mask = ISDISK(segp[segment_ndx]);
+ is_disk = is_disk_mask || !hashp->new_file;
+ }
+
+ if (!bp) {
+ bp = newbuf(hashp, addr, prev_bp);
+ if (!bp ||
+ __get_page(hashp, bp->page, addr, !prev_bp, is_disk, 0))
+ return (NULL);
+ if (!prev_bp)
+ segp[segment_ndx] =
+ (BUFHEAD *)((ptrdiff_t)bp | is_disk_mask);
+ } else {
+ BUF_REMOVE(bp);
+ MRU_INSERT(bp);
+ }
+ return (bp);
+}
+
+/*
+ * We need a buffer for this page. Either allocate one, or evict a resident
+ * one (if we have as many buffers as we're allowed) and put this one in.
+ *
+ * If newbuf finds an error (returning NULL), it also sets errno.
+ */
+static BUFHEAD *
+newbuf(hashp, addr, prev_bp)
+ HTAB *hashp;
+ u_int32_t addr;
+ BUFHEAD *prev_bp;
+{
+ register BUFHEAD *bp; /* The buffer we're going to use */
+ register BUFHEAD *xbp; /* Temp pointer */
+ register BUFHEAD *next_xbp;
+ SEGMENT segp;
+ int segment_ndx;
+ u_int16_t oaddr, *shortp;
+
+ oaddr = 0;
+ bp = LRU;
+ /*
+ * If LRU buffer is pinned, the buffer pool is too small. We need to
+ * allocate more buffers.
+ */
+ if (hashp->nbufs || (bp->flags & BUF_PIN)) {
+ /* Allocate a new one */
+ if ((bp = (BUFHEAD *)malloc(sizeof(BUFHEAD))) == NULL)
+ return (NULL);
+#ifdef PURIFY
+ memset(bp, 0xff, sizeof(BUFHEAD));
+#endif
+ if ((bp->page = (char *)malloc(hashp->BSIZE)) == NULL) {
+ free(bp);
+ return (NULL);
+ }
+#ifdef PURIFY
+ memset(bp->page, 0xff, hashp->BSIZE);
+#endif
+ if (hashp->nbufs)
+ hashp->nbufs--;
+ } else {
+ /* Kick someone out */
+ BUF_REMOVE(bp);
+ /*
+ * If this is an overflow page with addr 0, it's already been
+ * flushed back in an overflow chain and initialized.
+ */
+ if ((bp->addr != 0) || (bp->flags & BUF_BUCKET)) {
+ /*
+ * Set oaddr before __put_page so that you get it
+ * before bytes are swapped.
+ */
+ shortp = (u_int16_t *)bp->page;
+ if (shortp[0])
+ oaddr = shortp[shortp[0] - 1];
+ if ((bp->flags & BUF_MOD) && __put_page(hashp, bp->page,
+ bp->addr, (int)IS_BUCKET(bp->flags), 0))
+ return (NULL);
+ /*
+ * Update the pointer to this page (i.e. invalidate it).
+ *
+ * If this is a new file (i.e. we created it at open
+ * time), make sure that we mark pages which have been
+ * written to disk so we retrieve them from disk later,
+ * rather than allocating new pages.
+ */
+ if (IS_BUCKET(bp->flags)) {
+ segment_ndx = bp->addr & (hashp->SGSIZE - 1);
+ segp = hashp->dir[bp->addr >> hashp->SSHIFT];
+#ifdef DEBUG
+ assert(segp != NULL);
+#endif
+
+ if (hashp->new_file &&
+ ((bp->flags & BUF_MOD) ||
+ ISDISK(segp[segment_ndx])))
+ segp[segment_ndx] = (BUFHEAD *)BUF_DISK;
+ else
+ segp[segment_ndx] = NULL;
+ }
+ /*
+ * Since overflow pages can only be access by means of
+ * their bucket, free overflow pages associated with
+ * this bucket.
+ */
+ for (xbp = bp; xbp->ovfl;) {
+ next_xbp = xbp->ovfl;
+ xbp->ovfl = 0;
+ xbp = next_xbp;
+
+ /* Check that ovfl pointer is up date. */
+ if (IS_BUCKET(xbp->flags) ||
+ (oaddr != xbp->addr))
+ break;
+
+ shortp = (u_int16_t *)xbp->page;
+ if (shortp[0])
+ /* set before __put_page */
+ oaddr = shortp[shortp[0] - 1];
+ if ((xbp->flags & BUF_MOD) && __put_page(hashp,
+ xbp->page, xbp->addr, 0, 0))
+ return (NULL);
+ xbp->addr = 0;
+ xbp->flags = 0;
+ BUF_REMOVE(xbp);
+ LRU_INSERT(xbp);
+ }
+ }
+ }
+
+ /* Now assign this buffer */
+ bp->addr = addr;
+#ifdef DEBUG1
+ (void)fprintf(stderr, "NEWBUF1: %d->ovfl was %d is now %d\n",
+ bp->addr, (bp->ovfl ? bp->ovfl->addr : 0), 0);
+#endif
+ bp->ovfl = NULL;
+ if (prev_bp) {
+ /*
+ * If prev_bp is set, this is an overflow page, hook it in to
+ * the buffer overflow links.
+ */
+#ifdef DEBUG1
+ (void)fprintf(stderr, "NEWBUF2: %d->ovfl was %d is now %d\n",
+ prev_bp->addr, (prev_bp->ovfl ? bp->ovfl->addr : 0),
+ (bp ? bp->addr : 0));
+#endif
+ prev_bp->ovfl = bp;
+ bp->flags = 0;
+ } else
+ bp->flags = BUF_BUCKET;
+ MRU_INSERT(bp);
+ return (bp);
+}
+
+extern void
+__buf_init(hashp, nbytes)
+ HTAB *hashp;
+ int nbytes;
+{
+ BUFHEAD *bfp;
+ int npages;
+
+ bfp = &(hashp->bufhead);
+ npages = (nbytes + hashp->BSIZE - 1) >> hashp->BSHIFT;
+ npages = MAX(npages, MIN_BUFFERS);
+
+ hashp->nbufs = npages;
+ bfp->next = bfp;
+ bfp->prev = bfp;
+ /*
+ * This space is calloc'd so these are already null.
+ *
+ * bfp->ovfl = NULL;
+ * bfp->flags = 0;
+ * bfp->page = NULL;
+ * bfp->addr = 0;
+ */
+}
+
+extern int
+__buf_free(hashp, do_free, to_disk)
+ HTAB *hashp;
+ int do_free, to_disk;
+{
+ BUFHEAD *bp;
+
+ /* Need to make sure that buffer manager has been initialized */
+ if (!LRU)
+ return (0);
+ for (bp = LRU; bp != &hashp->bufhead;) {
+ /* Check that the buffer is valid */
+ if (bp->addr || IS_BUCKET(bp->flags)) {
+ if (to_disk && (bp->flags & BUF_MOD) &&
+ __put_page(hashp, bp->page,
+ bp->addr, IS_BUCKET(bp->flags), 0))
+ return (-1);
+ }
+ /* Check if we are freeing stuff */
+ if (do_free) {
+ if (bp->page)
+ free(bp->page);
+ BUF_REMOVE(bp);
+ free(bp);
+ bp = LRU;
+ } else
+ bp = bp->prev;
+ }
+ return (0);
+}
+
+extern void
+__reclaim_buf(hashp, bp)
+ HTAB *hashp;
+ BUFHEAD *bp;
+{
+ bp->ovfl = 0;
+ bp->addr = 0;
+ bp->flags = 0;
+ BUF_REMOVE(bp);
+ LRU_INSERT(bp);
+}
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)hash_func.c 8.2 (Berkeley) 2/21/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <db.h>
+#include "hash.h"
+#include "page.h"
+#include "extern.h"
+
+static u_int32_t hash1 __P((const void *, size_t));
+static u_int32_t hash2 __P((const void *, size_t));
+static u_int32_t hash3 __P((const void *, size_t));
+static u_int32_t hash4 __P((const void *, size_t));
+
+/* Global default hash function */
+u_int32_t (*__default_hash) __P((const void *, size_t)) = hash4;
+
+/*
+ * HASH FUNCTIONS
+ *
+ * Assume that we've already split the bucket to which this key hashes,
+ * calculate that bucket, and check that in fact we did already split it.
+ *
+ * This came from ejb's hsearch.
+ */
+
+#define PRIME1 37
+#define PRIME2 1048583
+
+static u_int32_t
+hash1(keyarg, len)
+ const void *keyarg;
+ register size_t len;
+{
+ register const u_char *key;
+ register u_int32_t h;
+
+ /* Convert string to integer */
+ for (key = keyarg, h = 0; len--;)
+ h = h * PRIME1 ^ (*key++ - ' ');
+ h %= PRIME2;
+ return (h);
+}
+
+/*
+ * Phong's linear congruential hash
+ */
+#define dcharhash(h, c) ((h) = 0x63c63cd9*(h) + 0x9c39c33d + (c))
+
+static u_int32_t
+hash2(keyarg, len)
+ const void *keyarg;
+ size_t len;
+{
+ register const u_char *e, *key;
+ register u_int32_t h;
+ register u_char c;
+
+ key = keyarg;
+ e = key + len;
+ for (h = 0; key != e;) {
+ c = *key++;
+ if (!c && key > e)
+ break;
+ dcharhash(h, c);
+ }
+ return (h);
+}
+
+/*
+ * This is INCREDIBLY ugly, but fast. We break the string up into 8 byte
+ * units. On the first time through the loop we get the "leftover bytes"
+ * (strlen % 8). On every other iteration, we perform 8 HASHC's so we handle
+ * all 8 bytes. Essentially, this saves us 7 cmp & branch instructions. If
+ * this routine is heavily used enough, it's worth the ugly coding.
+ *
+ * OZ's original sdbm hash
+ */
+static u_int32_t
+hash3(keyarg, len)
+ const void *keyarg;
+ register size_t len;
+{
+ register const u_char *key;
+ register size_t loop;
+ register u_int32_t h;
+
+#define HASHC h = *key++ + 65599 * h
+
+ h = 0;
+ key = keyarg;
+ if (len > 0) {
+ loop = (len + 8 - 1) >> 3;
+
+ switch (len & (8 - 1)) {
+ case 0:
+ do {
+ HASHC;
+ /* FALLTHROUGH */
+ case 7:
+ HASHC;
+ /* FALLTHROUGH */
+ case 6:
+ HASHC;
+ /* FALLTHROUGH */
+ case 5:
+ HASHC;
+ /* FALLTHROUGH */
+ case 4:
+ HASHC;
+ /* FALLTHROUGH */
+ case 3:
+ HASHC;
+ /* FALLTHROUGH */
+ case 2:
+ HASHC;
+ /* FALLTHROUGH */
+ case 1:
+ HASHC;
+ } while (--loop);
+ }
+ }
+ return (h);
+}
+
+/* Hash function from Chris Torek. */
+static u_int32_t
+hash4(keyarg, len)
+ const void *keyarg;
+ register size_t len;
+{
+ register const u_char *key;
+ register size_t loop;
+ register u_int32_t h;
+
+#define HASH4a h = (h << 5) - h + *key++;
+#define HASH4b h = (h << 5) + h + *key++;
+#define HASH4 HASH4b
+
+ h = 0;
+ key = keyarg;
+ if (len > 0) {
+ loop = (len + 8 - 1) >> 3;
+
+ switch (len & (8 - 1)) {
+ case 0:
+ do {
+ HASH4;
+ /* FALLTHROUGH */
+ case 7:
+ HASH4;
+ /* FALLTHROUGH */
+ case 6:
+ HASH4;
+ /* FALLTHROUGH */
+ case 5:
+ HASH4;
+ /* FALLTHROUGH */
+ case 4:
+ HASH4;
+ /* FALLTHROUGH */
+ case 3:
+ HASH4;
+ /* FALLTHROUGH */
+ case 2:
+ HASH4;
+ /* FALLTHROUGH */
+ case 1:
+ HASH4;
+ } while (--loop);
+ }
+ }
+ return (h);
+}
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)hash_log2.c 8.2 (Berkeley) 5/31/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <db.h>
+
+u_int32_t
+__log2(num)
+ u_int32_t num;
+{
+ register u_int32_t i, limit;
+
+ limit = 1;
+ for (i = 0; limit < num; limit = limit << 1, i++);
+ return (i);
+}
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)hash_page.c 8.7 (Berkeley) 8/16/94";
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * PACKAGE: hashing
+ *
+ * DESCRIPTION:
+ * Page manipulation for hashing package.
+ *
+ * ROUTINES:
+ *
+ * External
+ * __get_page
+ * __add_ovflpage
+ * Internal
+ * overflow_page
+ * open_temp
+ */
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#ifdef DEBUG
+#include <assert.h>
+#endif
+
+#include <db.h>
+#include "hash.h"
+#include "page.h"
+#include "extern.h"
+
+static u_int32_t *fetch_bitmap __P((HTAB *, int));
+static u_int32_t first_free __P((u_int32_t));
+static int open_temp __P((HTAB *));
+static u_int16_t overflow_page __P((HTAB *));
+static void putpair __P((char *, const DBT *, const DBT *));
+static void squeeze_key __P((u_int16_t *, const DBT *, const DBT *));
+static int ugly_split
+ __P((HTAB *, u_int32_t, BUFHEAD *, BUFHEAD *, int, int));
+
+#define PAGE_INIT(P) { \
+ ((u_int16_t *)(P))[0] = 0; \
+ ((u_int16_t *)(P))[1] = hashp->BSIZE - 3 * sizeof(u_int16_t); \
+ ((u_int16_t *)(P))[2] = hashp->BSIZE; \
+}
+
+/*
+ * This is called AFTER we have verified that there is room on the page for
+ * the pair (PAIRFITS has returned true) so we go right ahead and start moving
+ * stuff on.
+ */
+static void
+putpair(p, key, val)
+ char *p;
+ const DBT *key, *val;
+{
+ register u_int16_t *bp, n, off;
+
+ bp = (u_int16_t *)p;
+
+ /* Enter the key first. */
+ n = bp[0];
+
+ off = OFFSET(bp) - key->size;
+ memmove(p + off, key->data, key->size);
+ bp[++n] = off;
+
+ /* Now the data. */
+ off -= val->size;
+ memmove(p + off, val->data, val->size);
+ bp[++n] = off;
+
+ /* Adjust page info. */
+ bp[0] = n;
+ bp[n + 1] = off - ((n + 3) * sizeof(u_int16_t));
+ bp[n + 2] = off;
+}
+
+/*
+ * Returns:
+ * 0 OK
+ * -1 error
+ */
+extern int
+__delpair(hashp, bufp, ndx)
+ HTAB *hashp;
+ BUFHEAD *bufp;
+ register int ndx;
+{
+ register u_int16_t *bp, newoff;
+ register int n;
+ u_int16_t pairlen;
+
+ bp = (u_int16_t *)bufp->page;
+ n = bp[0];
+
+ if (bp[ndx + 1] < REAL_KEY)
+ return (__big_delete(hashp, bufp));
+ if (ndx != 1)
+ newoff = bp[ndx - 1];
+ else
+ newoff = hashp->BSIZE;
+ pairlen = newoff - bp[ndx + 1];
+
+ if (ndx != (n - 1)) {
+ /* Hard Case -- need to shuffle keys */
+ register int i;
+ register char *src = bufp->page + (int)OFFSET(bp);
+ register char *dst = src + (int)pairlen;
+ memmove(dst, src, bp[ndx + 1] - OFFSET(bp));
+
+ /* Now adjust the pointers */
+ for (i = ndx + 2; i <= n; i += 2) {
+ if (bp[i + 1] == OVFLPAGE) {
+ bp[i - 2] = bp[i];
+ bp[i - 1] = bp[i + 1];
+ } else {
+ bp[i - 2] = bp[i] + pairlen;
+ bp[i - 1] = bp[i + 1] + pairlen;
+ }
+ }
+ }
+ /* Finally adjust the page data */
+ bp[n] = OFFSET(bp) + pairlen;
+ bp[n - 1] = bp[n + 1] + pairlen + 2 * sizeof(u_int16_t);
+ bp[0] = n - 2;
+ hashp->NKEYS--;
+
+ bufp->flags |= BUF_MOD;
+ return (0);
+}
+/*
+ * Returns:
+ * 0 ==> OK
+ * -1 ==> Error
+ */
+extern int
+__split_page(hashp, obucket, nbucket)
+ HTAB *hashp;
+ u_int32_t obucket, nbucket;
+{
+ register BUFHEAD *new_bufp, *old_bufp;
+ register u_int16_t *ino;
+ register char *np;
+ DBT key, val;
+ int n, ndx, retval;
+ u_int16_t copyto, diff, off, moved;
+ char *op;
+
+ copyto = (u_int16_t)hashp->BSIZE;
+ off = (u_int16_t)hashp->BSIZE;
+ old_bufp = __get_buf(hashp, obucket, NULL, 0);
+ if (old_bufp == NULL)
+ return (-1);
+ new_bufp = __get_buf(hashp, nbucket, NULL, 0);
+ if (new_bufp == NULL)
+ return (-1);
+
+ old_bufp->flags |= (BUF_MOD | BUF_PIN);
+ new_bufp->flags |= (BUF_MOD | BUF_PIN);
+
+ ino = (u_int16_t *)(op = old_bufp->page);
+ np = new_bufp->page;
+
+ moved = 0;
+
+ for (n = 1, ndx = 1; n < ino[0]; n += 2) {
+ if (ino[n + 1] < REAL_KEY) {
+ retval = ugly_split(hashp, obucket, old_bufp, new_bufp,
+ (int)copyto, (int)moved);
+ old_bufp->flags &= ~BUF_PIN;
+ new_bufp->flags &= ~BUF_PIN;
+ return (retval);
+
+ }
+ key.data = (u_char *)op + ino[n];
+ key.size = off - ino[n];
+
+ if (__call_hash(hashp, key.data, key.size) == obucket) {
+ /* Don't switch page */
+ diff = copyto - off;
+ if (diff) {
+ copyto = ino[n + 1] + diff;
+ memmove(op + copyto, op + ino[n + 1],
+ off - ino[n + 1]);
+ ino[ndx] = copyto + ino[n] - ino[n + 1];
+ ino[ndx + 1] = copyto;
+ } else
+ copyto = ino[n + 1];
+ ndx += 2;
+ } else {
+ /* Switch page */
+ val.data = (u_char *)op + ino[n + 1];
+ val.size = ino[n] - ino[n + 1];
+ putpair(np, &key, &val);
+ moved += 2;
+ }
+
+ off = ino[n + 1];
+ }
+
+ /* Now clean up the page */
+ ino[0] -= moved;
+ FREESPACE(ino) = copyto - sizeof(u_int16_t) * (ino[0] + 3);
+ OFFSET(ino) = copyto;
+
+#ifdef DEBUG3
+ (void)fprintf(stderr, "split %d/%d\n",
+ ((u_int16_t *)np)[0] / 2,
+ ((u_int16_t *)op)[0] / 2);
+#endif
+ /* unpin both pages */
+ old_bufp->flags &= ~BUF_PIN;
+ new_bufp->flags &= ~BUF_PIN;
+ return (0);
+}
+
+/*
+ * Called when we encounter an overflow or big key/data page during split
+ * handling. This is special cased since we have to begin checking whether
+ * the key/data pairs fit on their respective pages and because we may need
+ * overflow pages for both the old and new pages.
+ *
+ * The first page might be a page with regular key/data pairs in which case
+ * we have a regular overflow condition and just need to go on to the next
+ * page or it might be a big key/data pair in which case we need to fix the
+ * big key/data pair.
+ *
+ * Returns:
+ * 0 ==> success
+ * -1 ==> failure
+ */
+static int
+ugly_split(hashp, obucket, old_bufp, new_bufp, copyto, moved)
+ HTAB *hashp;
+ u_int32_t obucket; /* Same as __split_page. */
+ BUFHEAD *old_bufp, *new_bufp;
+ int copyto; /* First byte on page which contains key/data values. */
+ int moved; /* Number of pairs moved to new page. */
+{
+ register BUFHEAD *bufp; /* Buffer header for ino */
+ register u_int16_t *ino; /* Page keys come off of */
+ register u_int16_t *np; /* New page */
+ register u_int16_t *op; /* Page keys go on to if they aren't moving */
+
+ BUFHEAD *last_bfp; /* Last buf header OVFL needing to be freed */
+ DBT key, val;
+ SPLIT_RETURN ret;
+ u_int16_t n, off, ov_addr, scopyto;
+ char *cino; /* Character value of ino */
+
+ bufp = old_bufp;
+ ino = (u_int16_t *)old_bufp->page;
+ np = (u_int16_t *)new_bufp->page;
+ op = (u_int16_t *)old_bufp->page;
+ last_bfp = NULL;
+ scopyto = (u_int16_t)copyto; /* ANSI */
+
+ n = ino[0] - 1;
+ while (n < ino[0]) {
+ if (ino[2] < REAL_KEY && ino[2] != OVFLPAGE) {
+ if (__big_split(hashp, old_bufp,
+ new_bufp, bufp, bufp->addr, obucket, &ret))
+ return (-1);
+ old_bufp = ret.oldp;
+ if (!old_bufp)
+ return (-1);
+ op = (u_int16_t *)old_bufp->page;
+ new_bufp = ret.newp;
+ if (!new_bufp)
+ return (-1);
+ np = (u_int16_t *)new_bufp->page;
+ bufp = ret.nextp;
+ if (!bufp)
+ return (0);
+ cino = (char *)bufp->page;
+ ino = (u_int16_t *)cino;
+ last_bfp = ret.nextp;
+ } else if (ino[n + 1] == OVFLPAGE) {
+ ov_addr = ino[n];
+ /*
+ * Fix up the old page -- the extra 2 are the fields
+ * which contained the overflow information.
+ */
+ ino[0] -= (moved + 2);
+ FREESPACE(ino) =
+ scopyto - sizeof(u_int16_t) * (ino[0] + 3);
+ OFFSET(ino) = scopyto;
+
+ bufp = __get_buf(hashp, ov_addr, bufp, 0);
+ if (!bufp)
+ return (-1);
+
+ ino = (u_int16_t *)bufp->page;
+ n = 1;
+ scopyto = hashp->BSIZE;
+ moved = 0;
+
+ if (last_bfp)
+ __free_ovflpage(hashp, last_bfp);
+ last_bfp = bufp;
+ }
+ /* Move regular sized pairs of there are any */
+ off = hashp->BSIZE;
+ for (n = 1; (n < ino[0]) && (ino[n + 1] >= REAL_KEY); n += 2) {
+ cino = (char *)ino;
+ key.data = (u_char *)cino + ino[n];
+ key.size = off - ino[n];
+ val.data = (u_char *)cino + ino[n + 1];
+ val.size = ino[n] - ino[n + 1];
+ off = ino[n + 1];
+
+ if (__call_hash(hashp, key.data, key.size) == obucket) {
+ /* Keep on old page */
+ if (PAIRFITS(op, (&key), (&val)))
+ putpair((char *)op, &key, &val);
+ else {
+ old_bufp =
+ __add_ovflpage(hashp, old_bufp);
+ if (!old_bufp)
+ return (-1);
+ op = (u_int16_t *)old_bufp->page;
+ putpair((char *)op, &key, &val);
+ }
+ old_bufp->flags |= BUF_MOD;
+ } else {
+ /* Move to new page */
+ if (PAIRFITS(np, (&key), (&val)))
+ putpair((char *)np, &key, &val);
+ else {
+ new_bufp =
+ __add_ovflpage(hashp, new_bufp);
+ if (!new_bufp)
+ return (-1);
+ np = (u_int16_t *)new_bufp->page;
+ putpair((char *)np, &key, &val);
+ }
+ new_bufp->flags |= BUF_MOD;
+ }
+ }
+ }
+ if (last_bfp)
+ __free_ovflpage(hashp, last_bfp);
+ return (0);
+}
+
+/*
+ * Add the given pair to the page
+ *
+ * Returns:
+ * 0 ==> OK
+ * 1 ==> failure
+ */
+extern int
+__addel(hashp, bufp, key, val)
+ HTAB *hashp;
+ BUFHEAD *bufp;
+ const DBT *key, *val;
+{
+ register u_int16_t *bp, *sop;
+ int do_expand;
+
+ bp = (u_int16_t *)bufp->page;
+ do_expand = 0;
+ while (bp[0] && (bp[2] < REAL_KEY || bp[bp[0]] < REAL_KEY))
+ /* Exception case */
+ if (bp[2] == FULL_KEY_DATA && bp[0] == 2)
+ /* This is the last page of a big key/data pair
+ and we need to add another page */
+ break;
+ else if (bp[2] < REAL_KEY && bp[bp[0]] != OVFLPAGE) {
+ bufp = __get_buf(hashp, bp[bp[0] - 1], bufp, 0);
+ if (!bufp)
+ return (-1);
+ bp = (u_int16_t *)bufp->page;
+ } else
+ /* Try to squeeze key on this page */
+ if (FREESPACE(bp) > PAIRSIZE(key, val)) {
+ squeeze_key(bp, key, val);
+ return (0);
+ } else {
+ bufp = __get_buf(hashp, bp[bp[0] - 1], bufp, 0);
+ if (!bufp)
+ return (-1);
+ bp = (u_int16_t *)bufp->page;
+ }
+
+ if (PAIRFITS(bp, key, val))
+ putpair(bufp->page, key, val);
+ else {
+ do_expand = 1;
+ bufp = __add_ovflpage(hashp, bufp);
+ if (!bufp)
+ return (-1);
+ sop = (u_int16_t *)bufp->page;
+
+ if (PAIRFITS(sop, key, val))
+ putpair((char *)sop, key, val);
+ else
+ if (__big_insert(hashp, bufp, key, val))
+ return (-1);
+ }
+ bufp->flags |= BUF_MOD;
+ /*
+ * If the average number of keys per bucket exceeds the fill factor,
+ * expand the table.
+ */
+ hashp->NKEYS++;
+ if (do_expand ||
+ (hashp->NKEYS / (hashp->MAX_BUCKET + 1) > hashp->FFACTOR))
+ return (__expand_table(hashp));
+ return (0);
+}
+
+/*
+ *
+ * Returns:
+ * pointer on success
+ * NULL on error
+ */
+extern BUFHEAD *
+__add_ovflpage(hashp, bufp)
+ HTAB *hashp;
+ BUFHEAD *bufp;
+{
+ register u_int16_t *sp;
+ u_int16_t ndx, ovfl_num;
+#ifdef DEBUG1
+ int tmp1, tmp2;
+#endif
+ sp = (u_int16_t *)bufp->page;
+
+ /* Check if we are dynamically determining the fill factor */
+ if (hashp->FFACTOR == DEF_FFACTOR) {
+ hashp->FFACTOR = sp[0] >> 1;
+ if (hashp->FFACTOR < MIN_FFACTOR)
+ hashp->FFACTOR = MIN_FFACTOR;
+ }
+ bufp->flags |= BUF_MOD;
+ ovfl_num = overflow_page(hashp);
+#ifdef DEBUG1
+ tmp1 = bufp->addr;
+ tmp2 = bufp->ovfl ? bufp->ovfl->addr : 0;
+#endif
+ if (!ovfl_num || !(bufp->ovfl = __get_buf(hashp, ovfl_num, bufp, 1)))
+ return (NULL);
+ bufp->ovfl->flags |= BUF_MOD;
+#ifdef DEBUG1
+ (void)fprintf(stderr, "ADDOVFLPAGE: %d->ovfl was %d is now %d\n",
+ tmp1, tmp2, bufp->ovfl->addr);
+#endif
+ ndx = sp[0];
+ /*
+ * Since a pair is allocated on a page only if there's room to add
+ * an overflow page, we know that the OVFL information will fit on
+ * the page.
+ */
+ sp[ndx + 4] = OFFSET(sp);
+ sp[ndx + 3] = FREESPACE(sp) - OVFLSIZE;
+ sp[ndx + 1] = ovfl_num;
+ sp[ndx + 2] = OVFLPAGE;
+ sp[0] = ndx + 2;
+#ifdef HASH_STATISTICS
+ hash_overflows++;
+#endif
+ return (bufp->ovfl);
+}
+
+/*
+ * Returns:
+ * 0 indicates SUCCESS
+ * -1 indicates FAILURE
+ */
+extern int
+__get_page(hashp, p, bucket, is_bucket, is_disk, is_bitmap)
+ HTAB *hashp;
+ char *p;
+ u_int32_t bucket;
+ int is_bucket, is_disk, is_bitmap;
+{
+ register int fd, page, size;
+ int rsize;
+ u_int16_t *bp;
+
+ fd = hashp->fp;
+ size = hashp->BSIZE;
+
+ if ((fd == -1) || !is_disk) {
+ PAGE_INIT(p);
+ return (0);
+ }
+ if (is_bucket)
+ page = BUCKET_TO_PAGE(bucket);
+ else
+ page = OADDR_TO_PAGE(bucket);
+ if ((lseek(fd, (off_t)page << hashp->BSHIFT, SEEK_SET) == -1) ||
+ ((rsize = read(fd, p, size)) == -1))
+ return (-1);
+ bp = (u_int16_t *)p;
+ if (!rsize)
+ bp[0] = 0; /* We hit the EOF, so initialize a new page */
+ else
+ if (rsize != size) {
+ errno = EFTYPE;
+ return (-1);
+ }
+ if (!is_bitmap && !bp[0]) {
+ PAGE_INIT(p);
+ } else
+ if (hashp->LORDER != BYTE_ORDER) {
+ register int i, max;
+
+ if (is_bitmap) {
+ max = hashp->BSIZE >> 2; /* divide by 4 */
+ for (i = 0; i < max; i++)
+ M_32_SWAP(((int *)p)[i]);
+ } else {
+ M_16_SWAP(bp[0]);
+ max = bp[0] + 2;
+ for (i = 1; i <= max; i++)
+ M_16_SWAP(bp[i]);
+ }
+ }
+ return (0);
+}
+
+/*
+ * Write page p to disk
+ *
+ * Returns:
+ * 0 ==> OK
+ * -1 ==>failure
+ */
+extern int
+__put_page(hashp, p, bucket, is_bucket, is_bitmap)
+ HTAB *hashp;
+ char *p;
+ u_int32_t bucket;
+ int is_bucket, is_bitmap;
+{
+ register int fd, page, size;
+ int wsize;
+
+ size = hashp->BSIZE;
+ if ((hashp->fp == -1) && open_temp(hashp))
+ return (-1);
+ fd = hashp->fp;
+
+ if (hashp->LORDER != BYTE_ORDER) {
+ register int i;
+ register int max;
+
+ if (is_bitmap) {
+ max = hashp->BSIZE >> 2; /* divide by 4 */
+ for (i = 0; i < max; i++)
+ M_32_SWAP(((int *)p)[i]);
+ } else {
+ max = ((u_int16_t *)p)[0] + 2;
+ for (i = 0; i <= max; i++)
+ M_16_SWAP(((u_int16_t *)p)[i]);
+ }
+ }
+ if (is_bucket)
+ page = BUCKET_TO_PAGE(bucket);
+ else
+ page = OADDR_TO_PAGE(bucket);
+ if ((lseek(fd, (off_t)page << hashp->BSHIFT, SEEK_SET) == -1) ||
+ ((wsize = write(fd, p, size)) == -1))
+ /* Errno is set */
+ return (-1);
+ if (wsize != size) {
+ errno = EFTYPE;
+ return (-1);
+ }
+ return (0);
+}
+
+#define BYTE_MASK ((1 << INT_BYTE_SHIFT) -1)
+/*
+ * Initialize a new bitmap page. Bitmap pages are left in memory
+ * once they are read in.
+ */
+extern int
+__ibitmap(hashp, pnum, nbits, ndx)
+ HTAB *hashp;
+ int pnum, nbits, ndx;
+{
+ u_int32_t *ip;
+ int clearbytes, clearints;
+
+ if ((ip = (u_int32_t *)malloc(hashp->BSIZE)) == NULL)
+ return (1);
+ hashp->nmaps++;
+ clearints = ((nbits - 1) >> INT_BYTE_SHIFT) + 1;
+ clearbytes = clearints << INT_TO_BYTE;
+ (void)memset((char *)ip, 0, clearbytes);
+ (void)memset(((char *)ip) + clearbytes, 0xFF,
+ hashp->BSIZE - clearbytes);
+ ip[clearints - 1] = ALL_SET << (nbits & BYTE_MASK);
+ SETBIT(ip, 0);
+ hashp->BITMAPS[ndx] = (u_int16_t)pnum;
+ hashp->mapp[ndx] = ip;
+ return (0);
+}
+
+static u_int32_t
+first_free(map)
+ u_int32_t map;
+{
+ register u_int32_t i, mask;
+
+ mask = 0x1;
+ for (i = 0; i < BITS_PER_MAP; i++) {
+ if (!(mask & map))
+ return (i);
+ mask = mask << 1;
+ }
+ return (i);
+}
+
+static u_int16_t
+overflow_page(hashp)
+ HTAB *hashp;
+{
+ register u_int32_t *freep;
+ register int max_free, offset, splitnum;
+ u_int16_t addr;
+ int bit, first_page, free_bit, free_page, i, in_use_bits, j;
+#ifdef DEBUG2
+ int tmp1, tmp2;
+#endif
+ splitnum = hashp->OVFL_POINT;
+ max_free = hashp->SPARES[splitnum];
+
+ free_page = (max_free - 1) >> (hashp->BSHIFT + BYTE_SHIFT);
+ free_bit = (max_free - 1) & ((hashp->BSIZE << BYTE_SHIFT) - 1);
+
+ /* Look through all the free maps to find the first free block */
+ first_page = hashp->LAST_FREED >>(hashp->BSHIFT + BYTE_SHIFT);
+ for ( i = first_page; i <= free_page; i++ ) {
+ if (!(freep = (u_int32_t *)hashp->mapp[i]) &&
+ !(freep = fetch_bitmap(hashp, i)))
+ return (0);
+ if (i == free_page)
+ in_use_bits = free_bit;
+ else
+ in_use_bits = (hashp->BSIZE << BYTE_SHIFT) - 1;
+
+ if (i == first_page) {
+ bit = hashp->LAST_FREED &
+ ((hashp->BSIZE << BYTE_SHIFT) - 1);
+ j = bit / BITS_PER_MAP;
+ bit = bit & ~(BITS_PER_MAP - 1);
+ } else {
+ bit = 0;
+ j = 0;
+ }
+ for (; bit <= in_use_bits; j++, bit += BITS_PER_MAP)
+ if (freep[j] != ALL_SET)
+ goto found;
+ }
+
+ /* No Free Page Found */
+ hashp->LAST_FREED = hashp->SPARES[splitnum];
+ hashp->SPARES[splitnum]++;
+ offset = hashp->SPARES[splitnum] -
+ (splitnum ? hashp->SPARES[splitnum - 1] : 0);
+
+#define OVMSG "HASH: Out of overflow pages. Increase page size\n"
+ if (offset > SPLITMASK) {
+ if (++splitnum >= NCACHED) {
+ (void)write(STDERR_FILENO, OVMSG, sizeof(OVMSG) - 1);
+ return (0);
+ }
+ hashp->OVFL_POINT = splitnum;
+ hashp->SPARES[splitnum] = hashp->SPARES[splitnum-1];
+ hashp->SPARES[splitnum-1]--;
+ offset = 1;
+ }
+
+ /* Check if we need to allocate a new bitmap page */
+ if (free_bit == (hashp->BSIZE << BYTE_SHIFT) - 1) {
+ free_page++;
+ if (free_page >= NCACHED) {
+ (void)write(STDERR_FILENO, OVMSG, sizeof(OVMSG) - 1);
+ return (0);
+ }
+ /*
+ * This is tricky. The 1 indicates that you want the new page
+ * allocated with 1 clear bit. Actually, you are going to
+ * allocate 2 pages from this map. The first is going to be
+ * the map page, the second is the overflow page we were
+ * looking for. The init_bitmap routine automatically, sets
+ * the first bit of itself to indicate that the bitmap itself
+ * is in use. We would explicitly set the second bit, but
+ * don't have to if we tell init_bitmap not to leave it clear
+ * in the first place.
+ */
+ if (__ibitmap(hashp,
+ (int)OADDR_OF(splitnum, offset), 1, free_page))
+ return (0);
+ hashp->SPARES[splitnum]++;
+#ifdef DEBUG2
+ free_bit = 2;
+#endif
+ offset++;
+ if (offset > SPLITMASK) {
+ if (++splitnum >= NCACHED) {
+ (void)write(STDERR_FILENO, OVMSG,
+ sizeof(OVMSG) - 1);
+ return (0);
+ }
+ hashp->OVFL_POINT = splitnum;
+ hashp->SPARES[splitnum] = hashp->SPARES[splitnum-1];
+ hashp->SPARES[splitnum-1]--;
+ offset = 0;
+ }
+ } else {
+ /*
+ * Free_bit addresses the last used bit. Bump it to address
+ * the first available bit.
+ */
+ free_bit++;
+ SETBIT(freep, free_bit);
+ }
+
+ /* Calculate address of the new overflow page */
+ addr = OADDR_OF(splitnum, offset);
+#ifdef DEBUG2
+ (void)fprintf(stderr, "OVERFLOW_PAGE: ADDR: %d BIT: %d PAGE %d\n",
+ addr, free_bit, free_page);
+#endif
+ return (addr);
+
+found:
+ bit = bit + first_free(freep[j]);
+ SETBIT(freep, bit);
+#ifdef DEBUG2
+ tmp1 = bit;
+ tmp2 = i;
+#endif
+ /*
+ * Bits are addressed starting with 0, but overflow pages are addressed
+ * beginning at 1. Bit is a bit addressnumber, so we need to increment
+ * it to convert it to a page number.
+ */
+ bit = 1 + bit + (i * (hashp->BSIZE << BYTE_SHIFT));
+ if (bit >= hashp->LAST_FREED)
+ hashp->LAST_FREED = bit - 1;
+
+ /* Calculate the split number for this page */
+ for (i = 0; (i < splitnum) && (bit > hashp->SPARES[i]); i++);
+ offset = (i ? bit - hashp->SPARES[i - 1] : bit);
+ if (offset >= SPLITMASK)
+ return (0); /* Out of overflow pages */
+ addr = OADDR_OF(i, offset);
+#ifdef DEBUG2
+ (void)fprintf(stderr, "OVERFLOW_PAGE: ADDR: %d BIT: %d PAGE %d\n",
+ addr, tmp1, tmp2);
+#endif
+
+ /* Allocate and return the overflow page */
+ return (addr);
+}
+
+/*
+ * Mark this overflow page as free.
+ */
+extern void
+__free_ovflpage(hashp, obufp)
+ HTAB *hashp;
+ BUFHEAD *obufp;
+{
+ register u_int16_t addr;
+ u_int32_t *freep;
+ int bit_address, free_page, free_bit;
+ u_int16_t ndx;
+
+ addr = obufp->addr;
+#ifdef DEBUG1
+ (void)fprintf(stderr, "Freeing %d\n", addr);
+#endif
+ ndx = (((u_int16_t)addr) >> SPLITSHIFT);
+ bit_address =
+ (ndx ? hashp->SPARES[ndx - 1] : 0) + (addr & SPLITMASK) - 1;
+ if (bit_address < hashp->LAST_FREED)
+ hashp->LAST_FREED = bit_address;
+ free_page = (bit_address >> (hashp->BSHIFT + BYTE_SHIFT));
+ free_bit = bit_address & ((hashp->BSIZE << BYTE_SHIFT) - 1);
+
+ if (!(freep = hashp->mapp[free_page]))
+ freep = fetch_bitmap(hashp, free_page);
+#ifdef DEBUG
+ /*
+ * This had better never happen. It means we tried to read a bitmap
+ * that has already had overflow pages allocated off it, and we
+ * failed to read it from the file.
+ */
+ if (!freep)
+ assert(0);
+#endif
+ CLRBIT(freep, free_bit);
+#ifdef DEBUG2
+ (void)fprintf(stderr, "FREE_OVFLPAGE: ADDR: %d BIT: %d PAGE %d\n",
+ obufp->addr, free_bit, free_page);
+#endif
+ __reclaim_buf(hashp, obufp);
+}
+
+/*
+ * Returns:
+ * 0 success
+ * -1 failure
+ */
+static int
+open_temp(hashp)
+ HTAB *hashp;
+{
+ sigset_t set, oset;
+ static char namestr[] = "_hashXXXXXX";
+
+ /* Block signals; make sure file goes away at process exit. */
+ (void)sigfillset(&set);
+ (void)sigprocmask(SIG_BLOCK, &set, &oset);
+ if ((hashp->fp = mkstemp(namestr)) != -1) {
+ (void)unlink(namestr);
+ (void)fcntl(hashp->fp, F_SETFD, 1);
+ }
+ (void)sigprocmask(SIG_SETMASK, &oset, (sigset_t *)NULL);
+ return (hashp->fp != -1 ? 0 : -1);
+}
+
+/*
+ * We have to know that the key will fit, but the last entry on the page is
+ * an overflow pair, so we need to shift things.
+ */
+static void
+squeeze_key(sp, key, val)
+ u_int16_t *sp;
+ const DBT *key, *val;
+{
+ register char *p;
+ u_int16_t free_space, n, off, pageno;
+
+ p = (char *)sp;
+ n = sp[0];
+ free_space = FREESPACE(sp);
+ off = OFFSET(sp);
+
+ pageno = sp[n - 1];
+ off -= key->size;
+ sp[n - 1] = off;
+ memmove(p + off, key->data, key->size);
+ off -= val->size;
+ sp[n] = off;
+ memmove(p + off, val->data, val->size);
+ sp[0] = n + 2;
+ sp[n + 1] = pageno;
+ sp[n + 2] = OVFLPAGE;
+ FREESPACE(sp) = free_space - PAIRSIZE(key, val);
+ OFFSET(sp) = off;
+}
+
+static u_int32_t *
+fetch_bitmap(hashp, ndx)
+ HTAB *hashp;
+ int ndx;
+{
+ if (ndx >= hashp->nmaps)
+ return (NULL);
+ if ((hashp->mapp[ndx] = (u_int32_t *)malloc(hashp->BSIZE)) == NULL)
+ return (NULL);
+ if (__get_page(hashp,
+ (char *)hashp->mapp[ndx], hashp->BITMAPS[ndx], 0, 1, 1)) {
+ free(hashp->mapp[ndx]);
+ return (NULL);
+ }
+ return (hashp->mapp[ndx]);
+}
+
+#ifdef DEBUG4
+int
+print_chain(addr)
+ int addr;
+{
+ BUFHEAD *bufp;
+ short *bp, oaddr;
+
+ (void)fprintf(stderr, "%d ", addr);
+ bufp = __get_buf(hashp, addr, NULL, 0);
+ bp = (short *)bufp->page;
+ while (bp[0] && ((bp[bp[0]] == OVFLPAGE) ||
+ ((bp[0] > 2) && bp[2] < REAL_KEY))) {
+ oaddr = bp[bp[0] - 1];
+ (void)fprintf(stderr, "%d ", (int)oaddr);
+ bufp = __get_buf(hashp, (int)oaddr, bufp, 0);
+ bp = (short *)bufp->page;
+ }
+ (void)fprintf(stderr, "\n");
+}
+#endif
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)hsearch.c 8.4 (Berkeley) 7/21/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <fcntl.h>
+#include <string.h>
+
+#include <db.h>
+#include "search.h"
+
+static DB *dbp = NULL;
+static ENTRY retval;
+
+extern int
+hcreate(nel)
+ u_int nel;
+{
+ HASHINFO info;
+
+ info.nelem = nel;
+ info.bsize = 256;
+ info.ffactor = 8;
+ info.cachesize = 0;
+ info.hash = NULL;
+ info.lorder = 0;
+ dbp = (DB *)__hash_open(NULL, O_CREAT | O_RDWR, 0600, &info, 0);
+ return ((int)dbp);
+}
+
+extern ENTRY *
+hsearch(item, action)
+ ENTRY item;
+ ACTION action;
+{
+ DBT key, val;
+ int status;
+
+ if (!dbp)
+ return (NULL);
+ key.data = (u_char *)item.key;
+ key.size = strlen(item.key) + 1;
+
+ if (action == ENTER) {
+ val.data = (u_char *)item.data;
+ val.size = strlen(item.data) + 1;
+ status = (dbp->put)(dbp, &key, &val, R_NOOVERWRITE);
+ if (status)
+ return (NULL);
+ } else {
+ /* FIND */
+ status = (dbp->get)(dbp, &key, &val, 0);
+ if (status)
+ return (NULL);
+ else
+ item.data = (char *)val.data;
+ }
+ retval.key = item.key;
+ retval.data = item.data;
+ return (&retval);
+}
+
+extern void
+hdestroy()
+{
+ if (dbp) {
+ (void)(dbp->close)(dbp);
+ dbp = NULL;
+ }
+}
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)ndbm.c 8.4 (Berkeley) 7/21/94";
+#endif /* LIBC_SCCS and not lint */
+
+/*
+ * This package provides a dbm compatible interface to the new hashing
+ * package described in db(3).
+ */
+
+#include <sys/param.h>
+
+#include <stdio.h>
+#include <string.h>
+
+#include <ndbm.h>
+#include "hash.h"
+
+/*
+ * Returns:
+ * *DBM on success
+ * NULL on failure
+ */
+extern DBM *
+dbm_open(file, flags, mode)
+ const char *file;
+ int flags, mode;
+{
+ HASHINFO info;
+ char path[MAXPATHLEN];
+
+ info.bsize = 4096;
+ info.ffactor = 40;
+ info.nelem = 1;
+ info.cachesize = 0;
+ info.hash = NULL;
+ info.lorder = 0;
+ (void)strcpy(path, file);
+ (void)strcat(path, DBM_SUFFIX);
+ return ((DBM *)__hash_open(path, flags, mode, &info, 0));
+}
+
+extern void
+dbm_close(db)
+ DBM *db;
+{
+ (void)(db->close)(db);
+}
+
+/*
+ * Returns:
+ * DATUM on success
+ * NULL on failure
+ */
+extern datum
+dbm_fetch(db, key)
+ DBM *db;
+ datum key;
+{
+ datum retval;
+ int status;
+
+ status = (db->get)(db, (DBT *)&key, (DBT *)&retval, 0);
+ if (status) {
+ retval.dptr = NULL;
+ retval.dsize = 0;
+ }
+ return (retval);
+}
+
+/*
+ * Returns:
+ * DATUM on success
+ * NULL on failure
+ */
+extern datum
+dbm_firstkey(db)
+ DBM *db;
+{
+ int status;
+ datum retdata, retkey;
+
+ status = (db->seq)(db, (DBT *)&retkey, (DBT *)&retdata, R_FIRST);
+ if (status)
+ retkey.dptr = NULL;
+ return (retkey);
+}
+
+/*
+ * Returns:
+ * DATUM on success
+ * NULL on failure
+ */
+extern datum
+dbm_nextkey(db)
+ DBM *db;
+{
+ int status;
+ datum retdata, retkey;
+
+ status = (db->seq)(db, (DBT *)&retkey, (DBT *)&retdata, R_NEXT);
+ if (status)
+ retkey.dptr = NULL;
+ return (retkey);
+}
+/*
+ * Returns:
+ * 0 on success
+ * <0 failure
+ */
+extern int
+dbm_delete(db, key)
+ DBM *db;
+ datum key;
+{
+ int status;
+
+ status = (db->del)(db, (DBT *)&key, 0);
+ if (status)
+ return (-1);
+ else
+ return (0);
+}
+
+/*
+ * Returns:
+ * 0 on success
+ * <0 failure
+ * 1 if DBM_INSERT and entry exists
+ */
+extern int
+dbm_store(db, key, content, flags)
+ DBM *db;
+ datum key, content;
+ int flags;
+{
+ return ((db->put)(db, (DBT *)&key, (DBT *)&content,
+ (flags == DBM_INSERT) ? R_NOOVERWRITE : 0));
+}
+
+extern int
+dbm_error(db)
+ DBM *db;
+{
+ HTAB *hp;
+
+ hp = (HTAB *)db->internal;
+ return (hp->errno);
+}
+
+extern int
+dbm_clearerr(db)
+ DBM *db;
+{
+ HTAB *hp;
+
+ hp = (HTAB *)db->internal;
+ hp->errno = 0;
+ return (0);
+}
+
+extern int
+dbm_dirfno(db)
+ DBM *db;
+{
+ return(((HTAB *)db->internal)->fp);
+}
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)page.h 8.2 (Berkeley) 5/31/94
+ */
+
+/*
+ * Definitions for hashing page file format.
+ */
+
+/*
+ * routines dealing with a data page
+ *
+ * page format:
+ * +------------------------------+
+ * p | n | keyoff | datoff | keyoff |
+ * +------------+--------+--------+
+ * | datoff | free | ptr | --> |
+ * +--------+---------------------+
+ * | F R E E A R E A |
+ * +--------------+---------------+
+ * | <---- - - - | data |
+ * +--------+-----+----+----------+
+ * | key | data | key |
+ * +--------+----------+----------+
+ *
+ * Pointer to the free space is always: p[p[0] + 2]
+ * Amount of free space on the page is: p[p[0] + 1]
+ */
+
+/*
+ * How many bytes required for this pair?
+ * 2 shorts in the table at the top of the page + room for the
+ * key and room for the data
+ *
+ * We prohibit entering a pair on a page unless there is also room to append
+ * an overflow page. The reason for this it that you can get in a situation
+ * where a single key/data pair fits on a page, but you can't append an
+ * overflow page and later you'd have to split the key/data and handle like
+ * a big pair.
+ * You might as well do this up front.
+ */
+
+#define PAIRSIZE(K,D) (2*sizeof(u_int16_t) + (K)->size + (D)->size)
+#define BIGOVERHEAD (4*sizeof(u_int16_t))
+#define KEYSIZE(K) (4*sizeof(u_int16_t) + (K)->size);
+#define OVFLSIZE (2*sizeof(u_int16_t))
+#define FREESPACE(P) ((P)[(P)[0]+1])
+#define OFFSET(P) ((P)[(P)[0]+2])
+#define PAIRFITS(P,K,D) \
+ (((P)[2] >= REAL_KEY) && \
+ (PAIRSIZE((K),(D)) + OVFLSIZE) <= FREESPACE((P)))
+#define PAGE_META(N) (((N)+3) * sizeof(u_int16_t))
+
+typedef struct {
+ BUFHEAD *newp;
+ BUFHEAD *oldp;
+ BUFHEAD *nextp;
+ u_int16_t next_addr;
+} SPLIT_RETURN;
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)search.h 8.1 (Berkeley) 6/4/93
+ */
+
+/* Backward compatibility to hsearch interface. */
+typedef struct entry {
+ char *key;
+ char *data;
+} ENTRY;
+
+typedef enum {
+ FIND, ENTER
+} ACTION;
+
+int hcreate __P((unsigned int));
+void hdestroy __P((void));
+ENTRY *hsearch __P((ENTRY, ACTION));
--- /dev/null
+../db/tags
\ No newline at end of file
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)db.h 8.7 (Berkeley) 6/16/94
+ */
+
+#ifndef _DB_H_
+#define _DB_H_
+
+#include <sys/types.h>
+#include <sys/cdefs.h>
+
+#include <limits.h>
+
+#ifdef __DBINTERFACE_PRIVATE
+#include <compat.h>
+#endif
+
+#define RET_ERROR -1 /* Return values. */
+#define RET_SUCCESS 0
+#define RET_SPECIAL 1
+
+#ifndef __BIT_TYPES_DEFINED__
+#define __BIT_TYPES_DEFINED__
+typedef __signed char int8_t;
+typedef unsigned char u_int8_t;
+typedef short int16_t;
+typedef unsigned short u_int16_t;
+typedef int int32_t;
+typedef unsigned int u_int32_t;
+#ifdef WE_DONT_NEED_QUADS
+typedef long long int64_t;
+typedef unsigned long long u_int64_t;
+#endif
+#endif
+
+#define MAX_PAGE_NUMBER 0xffffffff /* >= # of pages in a file */
+typedef u_int32_t pgno_t;
+#define MAX_PAGE_OFFSET 65535 /* >= # of bytes in a page */
+typedef u_int16_t indx_t;
+#define MAX_REC_NUMBER 0xffffffff /* >= # of records in a tree */
+typedef u_int32_t recno_t;
+
+/* Key/data structure -- a Data-Base Thang. */
+typedef struct {
+ void *data; /* data */
+ size_t size; /* data length */
+} DBT;
+
+/* Routine flags. */
+#define R_CURSOR 1 /* del, put, seq */
+#define __R_UNUSED 2 /* UNUSED */
+#define R_FIRST 3 /* seq */
+#define R_IAFTER 4 /* put (RECNO) */
+#define R_IBEFORE 5 /* put (RECNO) */
+#define R_LAST 6 /* seq (BTREE, RECNO) */
+#define R_NEXT 7 /* seq */
+#define R_NOOVERWRITE 8 /* put */
+#define R_PREV 9 /* seq (BTREE, RECNO) */
+#define R_SETCURSOR 10 /* put (RECNO) */
+#define R_RECNOSYNC 11 /* sync (RECNO) */
+
+typedef enum { DB_BTREE, DB_HASH, DB_RECNO } DBTYPE;
+
+/*
+ * !!!
+ * The following flags are included in the dbopen(3) call as part of the
+ * open(2) flags. In order to avoid conflicts with the open flags, start
+ * at the top of the 16 or 32-bit number space and work our way down. If
+ * the open flags were significantly expanded in the future, it could be
+ * a problem. Wish I'd left another flags word in the dbopen call.
+ *
+ * !!!
+ * None of this stuff is implemented yet. The only reason that it's here
+ * is so that the access methods can skip copying the key/data pair when
+ * the DB_LOCK flag isn't set.
+ */
+#if UINT_MAX > 65535
+#define DB_LOCK 0x20000000 /* Do locking. */
+#define DB_SHMEM 0x40000000 /* Use shared memory. */
+#define DB_TXN 0x80000000 /* Do transactions. */
+#else
+#define DB_LOCK 0x2000 /* Do locking. */
+#define DB_SHMEM 0x4000 /* Use shared memory. */
+#define DB_TXN 0x8000 /* Do transactions. */
+#endif
+
+/* Access method description structure. */
+typedef struct __db {
+ DBTYPE type; /* Underlying db type. */
+ int (*close) __P((struct __db *));
+ int (*del) __P((const struct __db *, const DBT *, u_int));
+ int (*get) __P((const struct __db *, const DBT *, DBT *, u_int));
+ int (*put) __P((const struct __db *, DBT *, const DBT *, u_int));
+ int (*seq) __P((const struct __db *, DBT *, DBT *, u_int));
+ int (*sync) __P((const struct __db *, u_int));
+ void *internal; /* Access method private. */
+ int (*fd) __P((const struct __db *));
+} DB;
+
+#define BTREEMAGIC 0x053162
+#define BTREEVERSION 3
+
+/* Structure used to pass parameters to the btree routines. */
+typedef struct {
+#define R_DUP 0x01 /* duplicate keys */
+ u_long flags;
+ u_int cachesize; /* bytes to cache */
+ int maxkeypage; /* maximum keys per page */
+ int minkeypage; /* minimum keys per page */
+ u_int psize; /* page size */
+ int (*compare) /* comparison function */
+ __P((const DBT *, const DBT *));
+ size_t (*prefix) /* prefix function */
+ __P((const DBT *, const DBT *));
+ int lorder; /* byte order */
+} BTREEINFO;
+
+#define HASHMAGIC 0x061561
+#define HASHVERSION 2
+
+/* Structure used to pass parameters to the hashing routines. */
+typedef struct {
+ u_int bsize; /* bucket size */
+ u_int ffactor; /* fill factor */
+ u_int nelem; /* number of elements */
+ u_int cachesize; /* bytes to cache */
+ u_int32_t /* hash function */
+ (*hash) __P((const void *, size_t));
+ int lorder; /* byte order */
+} HASHINFO;
+
+/* Structure used to pass parameters to the record routines. */
+typedef struct {
+#define R_FIXEDLEN 0x01 /* fixed-length records */
+#define R_NOKEY 0x02 /* key not required */
+#define R_SNAPSHOT 0x04 /* snapshot the input */
+ u_long flags;
+ u_int cachesize; /* bytes to cache */
+ u_int psize; /* page size */
+ int lorder; /* byte order */
+ size_t reclen; /* record length (fixed-length records) */
+ u_char bval; /* delimiting byte (variable-length records */
+ char *bfname; /* btree file name */
+} RECNOINFO;
+
+#ifdef __DBINTERFACE_PRIVATE
+/*
+ * Little endian <==> big endian 32-bit swap macros.
+ * M_32_SWAP swap a memory location
+ * P_32_SWAP swap a referenced memory location
+ * P_32_COPY swap from one location to another
+ */
+#define M_32_SWAP(a) { \
+ u_int32_t _tmp = a; \
+ ((char *)&a)[0] = ((char *)&_tmp)[3]; \
+ ((char *)&a)[1] = ((char *)&_tmp)[2]; \
+ ((char *)&a)[2] = ((char *)&_tmp)[1]; \
+ ((char *)&a)[3] = ((char *)&_tmp)[0]; \
+}
+#define P_32_SWAP(a) { \
+ u_int32_t _tmp = *(u_int32_t *)a; \
+ ((char *)a)[0] = ((char *)&_tmp)[3]; \
+ ((char *)a)[1] = ((char *)&_tmp)[2]; \
+ ((char *)a)[2] = ((char *)&_tmp)[1]; \
+ ((char *)a)[3] = ((char *)&_tmp)[0]; \
+}
+#define P_32_COPY(a, b) { \
+ ((char *)&(b))[0] = ((char *)&(a))[3]; \
+ ((char *)&(b))[1] = ((char *)&(a))[2]; \
+ ((char *)&(b))[2] = ((char *)&(a))[1]; \
+ ((char *)&(b))[3] = ((char *)&(a))[0]; \
+}
+
+/*
+ * Little endian <==> big endian 16-bit swap macros.
+ * M_16_SWAP swap a memory location
+ * P_16_SWAP swap a referenced memory location
+ * P_16_COPY swap from one location to another
+ */
+#define M_16_SWAP(a) { \
+ u_int16_t _tmp = a; \
+ ((char *)&a)[0] = ((char *)&_tmp)[1]; \
+ ((char *)&a)[1] = ((char *)&_tmp)[0]; \
+}
+#define P_16_SWAP(a) { \
+ u_int16_t _tmp = *(u_int16_t *)a; \
+ ((char *)a)[0] = ((char *)&_tmp)[1]; \
+ ((char *)a)[1] = ((char *)&_tmp)[0]; \
+}
+#define P_16_COPY(a, b) { \
+ ((char *)&(b))[0] = ((char *)&(a))[1]; \
+ ((char *)&(b))[1] = ((char *)&(a))[0]; \
+}
+#endif
+
+__BEGIN_DECLS
+DB *dbopen __P((const char *, int, int, DBTYPE, const void *));
+
+#ifdef __DBINTERFACE_PRIVATE
+DB *__bt_open __P((const char *, int, int, const BTREEINFO *, int));
+DB *__hash_open __P((const char *, int, int, const HASHINFO *, int));
+DB *__rec_open __P((const char *, int, int, const RECNOINFO *, int));
+void __dbpanic __P((DB *dbp));
+#endif
+__END_DECLS
+#endif /* !_DB_H_ */
--- /dev/null
+/*-
+ * Copyright (c) 1991, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)mpool.h 8.2 (Berkeley) 7/14/94
+ */
+
+#include <sys/queue.h>
+
+/*
+ * The memory pool scheme is a simple one. Each in-memory page is referenced
+ * by a bucket which is threaded in up to two of three ways. All active pages
+ * are threaded on a hash chain (hashed by page number) and an lru chain.
+ * Inactive pages are threaded on a free chain. Each reference to a memory
+ * pool is handed an opaque MPOOL cookie which stores all of this information.
+ */
+#define HASHSIZE 128
+#define HASHKEY(pgno) ((pgno - 1) % HASHSIZE)
+
+/* The BKT structures are the elements of the queues. */
+typedef struct _bkt {
+ CIRCLEQ_ENTRY(_bkt) hq; /* hash queue */
+ CIRCLEQ_ENTRY(_bkt) q; /* lru queue */
+ void *page; /* page */
+ pgno_t pgno; /* page number */
+
+#define MPOOL_DIRTY 0x01 /* page needs to be written */
+#define MPOOL_PINNED 0x02 /* page is pinned into memory */
+ u_int8_t flags; /* flags */
+} BKT;
+
+typedef struct MPOOL {
+ CIRCLEQ_HEAD(_lqh, _bkt) lqh; /* lru queue head */
+ /* hash queue array */
+ CIRCLEQ_HEAD(_hqh, _bkt) hqh[HASHSIZE];
+ pgno_t curcache; /* current number of cached pages */
+ pgno_t maxcache; /* max number of cached pages */
+ pgno_t npages; /* number of pages in the file */
+ u_long pagesize; /* file page size */
+ int fd; /* file descriptor */
+ /* page in conversion routine */
+ void (*pgin) __P((void *, pgno_t, void *));
+ /* page out conversion routine */
+ void (*pgout) __P((void *, pgno_t, void *));
+ void *pgcookie; /* cookie for page in/out routines */
+#ifdef STATISTICS
+ u_long cachehit;
+ u_long cachemiss;
+ u_long pagealloc;
+ u_long pageflush;
+ u_long pageget;
+ u_long pagenew;
+ u_long pageput;
+ u_long pageread;
+ u_long pagewrite;
+#endif
+} MPOOL;
+
+__BEGIN_DECLS
+MPOOL *mpool_open __P((void *, int, pgno_t, pgno_t));
+void mpool_filter __P((MPOOL *, void (*)(void *, pgno_t, void *),
+ void (*)(void *, pgno_t, void *), void *));
+void *mpool_new __P((MPOOL *, pgno_t *));
+void *mpool_get __P((MPOOL *, pgno_t, u_int));
+int mpool_put __P((MPOOL *, void *, u_int));
+int mpool_sync __P((MPOOL *));
+int mpool_close __P((MPOOL *));
+#ifdef STATISTICS
+void mpool_stat __P((MPOOL *));
+#endif
+__END_DECLS
--- /dev/null
+../db/tags
\ No newline at end of file
--- /dev/null
+# @(#)Makefile.inc 8.1 (Berkeley) 6/4/93
+
+.PATH: ${.CURDIR}/db/man
+
+# mpool.3
+MAN3+= btree.0 dbopen.0 hash.0 recno.0
+MLINKS+= dbopen.3 db.3
--- /dev/null
+.\" Copyright (c) 1990, 1993
+.\" The Regents of the University of California. All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\" notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\" notice, this list of conditions and the following disclaimer in the
+.\" documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\" must display the following acknowledgement:
+.\" This product includes software developed by the University of
+.\" California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\" may be used to endorse or promote products derived from this software
+.\" without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\" @(#)btree.3 8.4 (Berkeley) 8/18/94
+.\"
+.TH BTREE 3 "August 18, 1994"
+.\".UC 7
+.SH NAME
+btree \- btree database access method
+.SH SYNOPSIS
+.nf
+.ft B
+#include <sys/types.h>
+#include <db.h>
+.ft R
+.fi
+.SH DESCRIPTION
+The routine
+.IR dbopen
+is the library interface to database files.
+One of the supported file formats is btree files.
+The general description of the database access methods is in
+.IR dbopen (3),
+this manual page describes only the btree specific information.
+.PP
+The btree data structure is a sorted, balanced tree structure storing
+associated key/data pairs.
+.PP
+The btree access method specific data structure provided to
+.I dbopen
+is defined in the <db.h> include file as follows:
+.PP
+typedef struct {
+.RS
+u_long flags;
+.br
+u_int cachesize;
+.br
+int maxkeypage;
+.br
+int minkeypage;
+.br
+u_int psize;
+.br
+int (*compare)(const DBT *key1, const DBT *key2);
+.br
+size_t (*prefix)(const DBT *key1, const DBT *key2);
+.br
+int lorder;
+.RE
+} BTREEINFO;
+.PP
+The elements of this structure are as follows:
+.TP
+flags
+The flag value is specified by
+.IR or 'ing
+any of the following values:
+.RS
+.TP
+R_DUP
+Permit duplicate keys in the tree, i.e. permit insertion if the key to be
+inserted already exists in the tree.
+The default behavior, as described in
+.IR dbopen (3),
+is to overwrite a matching key when inserting a new key or to fail if
+the R_NOOVERWRITE flag is specified.
+The R_DUP flag is overridden by the R_NOOVERWRITE flag, and if the
+R_NOOVERWRITE flag is specified, attempts to insert duplicate keys into
+the tree will fail.
+.IP
+If the database contains duplicate keys, the order of retrieval of
+key/data pairs is undefined if the
+.I get
+routine is used, however,
+.I seq
+routine calls with the R_CURSOR flag set will always return the logical
+``first'' of any group of duplicate keys.
+.RE
+.TP
+cachesize
+A suggested maximum size (in bytes) of the memory cache.
+This value is
+.B only
+advisory, and the access method will allocate more memory rather than fail.
+Since every search examines the root page of the tree, caching the most
+recently used pages substantially improves access time.
+In addition, physical writes are delayed as long as possible, so a moderate
+cache can reduce the number of I/O operations significantly.
+Obviously, using a cache increases (but only increases) the likelihood of
+corruption or lost data if the system crashes while a tree is being modified.
+If
+.I cachesize
+is 0 (no size is specified) a default cache is used.
+.TP
+maxkeypage
+The maximum number of keys which will be stored on any single page.
+Not currently implemented.
+.\" The maximum number of keys which will be stored on any single page.
+.\" Because of the way the btree data structure works,
+.\" .I maxkeypage
+.\" must always be greater than or equal to 2.
+.\" If
+.\" .I maxkeypage
+.\" is 0 (no maximum number of keys is specified) the page fill factor is
+.\" made as large as possible (which is almost invariably what is wanted).
+.TP
+minkeypage
+The minimum number of keys which will be stored on any single page.
+This value is used to determine which keys will be stored on overflow
+pages, i.e. if a key or data item is longer than the pagesize divided
+by the minkeypage value, it will be stored on overflow pages instead
+of in the page itself.
+If
+.I minkeypage
+is 0 (no minimum number of keys is specified) a value of 2 is used.
+.TP
+psize
+Page size is the size (in bytes) of the pages used for nodes in the tree.
+The minimum page size is 512 bytes and the maximum page size is 64K.
+If
+.I psize
+is 0 (no page size is specified) a page size is chosen based on the
+underlying file system I/O block size.
+.TP
+compare
+Compare is the key comparison function.
+It must return an integer less than, equal to, or greater than zero if the
+first key argument is considered to be respectively less than, equal to,
+or greater than the second key argument.
+The same comparison function must be used on a given tree every time it
+is opened.
+If
+.I compare
+is NULL (no comparison function is specified), the keys are compared
+lexically, with shorter keys considered less than longer keys.
+.TP
+prefix
+Prefix is the prefix comparison function.
+If specified, this routine must return the number of bytes of the second key
+argument which are necessary to determine that it is greater than the first
+key argument.
+If the keys are equal, the key length should be returned.
+Note, the usefulness of this routine is very data dependent, but, in some
+data sets can produce significantly reduced tree sizes and search times.
+If
+.I prefix
+is NULL (no prefix function is specified),
+.B and
+no comparison function is specified, a default lexical comparison routine
+is used.
+If
+.I prefix
+is NULL and a comparison routine is specified, no prefix comparison is
+done.
+.TP
+lorder
+The byte order for integers in the stored database metadata.
+The number should represent the order as an integer; for example,
+big endian order would be the number 4,321.
+If
+.I lorder
+is 0 (no order is specified) the current host order is used.
+.PP
+If the file already exists (and the O_TRUNC flag is not specified), the
+values specified for the parameters flags, lorder and psize are ignored
+in favor of the values used when the tree was created.
+.PP
+Forward sequential scans of a tree are from the least key to the greatest.
+.PP
+Space freed up by deleting key/data pairs from the tree is never reclaimed,
+although it is normally made available for reuse.
+This means that the btree storage structure is grow-only.
+The only solutions are to avoid excessive deletions, or to create a fresh
+tree periodically from a scan of an existing one.
+.PP
+Searches, insertions, and deletions in a btree will all complete in
+O lg base N where base is the average fill factor.
+Often, inserting ordered data into btrees results in a low fill factor.
+This implementation has been modified to make ordered insertion the best
+case, resulting in a much better than normal page fill factor.
+.SH ERRORS
+The
+.I btree
+access method routines may fail and set
+.I errno
+for any of the errors specified for the library routine
+.IR dbopen (3).
+.SH "SEE ALSO"
+.IR dbopen (3),
+.IR hash (3),
+.IR mpool (3),
+.IR recno (3)
+.sp
+.IR "The Ubiquitous B-tree" ,
+Douglas Comer, ACM Comput. Surv. 11, 2 (June 1979), 121-138.
+.sp
+.IR "Prefix B-trees" ,
+Bayer and Unterauer, ACM Transactions on Database Systems, Vol. 2, 1
+(March 1977), 11-26.
+.sp
+.IR "The Art of Computer Programming Vol. 3: Sorting and Searching" ,
+D.E. Knuth, 1968, pp 471-480.
+.SH BUGS
+Only big and little endian byte order is supported.
--- /dev/null
+.\" Copyright (c) 1990, 1993
+.\" The Regents of the University of California. All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\" notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\" notice, this list of conditions and the following disclaimer in the
+.\" documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\" must display the following acknowledgement:
+.\" This product includes software developed by the University of
+.\" California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\" may be used to endorse or promote products derived from this software
+.\" without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\" @(#)dbopen.3 8.5 (Berkeley) 1/2/94
+.\"
+.TH DBOPEN 3 "January 2, 1994"
+.UC 7
+.SH NAME
+dbopen \- database access methods
+.SH SYNOPSIS
+.nf
+.ft B
+#include <sys/types.h>
+#include <limits.h>
+#include <db.h>
+
+DB *
+dbopen(const char *file, int flags, int mode, DBTYPE type,
+.ti +5
+const void *openinfo);
+.ft R
+.fi
+.SH DESCRIPTION
+.IR Dbopen
+is the library interface to database files.
+The supported file formats are btree, hashed and UNIX file oriented.
+The btree format is a representation of a sorted, balanced tree structure.
+The hashed format is an extensible, dynamic hashing scheme.
+The flat-file format is a byte stream file with fixed or variable length
+records.
+The formats and file format specific information are described in detail
+in their respective manual pages
+.IR btree (3),
+.IR hash (3)
+and
+.IR recno (3).
+.PP
+Dbopen opens
+.I file
+for reading and/or writing.
+Files never intended to be preserved on disk may be created by setting
+the file parameter to NULL.
+.PP
+The
+.I flags
+and
+.I mode arguments
+are as specified to the
+.IR open (2)
+routine, however, only the O_CREAT, O_EXCL, O_EXLOCK, O_NONBLOCK,
+O_RDONLY, O_RDWR, O_SHLOCK and O_TRUNC flags are meaningful.
+(Note, opening a database file O_WRONLY is not possible.)
+.\"Three additional options may be specified by
+.\".IR or 'ing
+.\"them into the
+.\".I flags
+.\"argument.
+.\".TP
+.\"DB_LOCK
+.\"Do the necessary locking in the database to support concurrent access.
+.\"If concurrent access isn't needed or the database is read-only this
+.\"flag should not be set, as it tends to have an associated performance
+.\"penalty.
+.\".TP
+.\"DB_SHMEM
+.\"Place the underlying memory pool used by the database in shared
+.\"memory.
+.\"Necessary for concurrent access.
+.\".TP
+.\"DB_TXN
+.\"Support transactions in the database.
+.\"The DB_LOCK and DB_SHMEM flags must be set as well.
+.PP
+The
+.I type
+argument is of type DBTYPE (as defined in the <db.h> include file) and
+may be set to DB_BTREE, DB_HASH or DB_RECNO.
+.PP
+The
+.I openinfo
+argument is a pointer to an access method specific structure described
+in the access method's manual page.
+If
+.I openinfo
+is NULL, each access method will use defaults appropriate for the system
+and the access method.
+.PP
+.I Dbopen
+returns a pointer to a DB structure on success and NULL on error.
+The DB structure is defined in the <db.h> include file, and contains at
+least the following fields:
+.sp
+.nf
+typedef struct {
+.RS
+DBTYPE type;
+int (*close)(const DB *db);
+int (*del)(const DB *db, const DBT *key, u_int flags);
+int (*fd)(const DB *db);
+int (*get)(const DB *db, DBT *key, DBT *data, u_int flags);
+int (*put)(const DB *db, DBT *key, const DBT *data,
+.ti +5
+u_int flags);
+int (*sync)(const DB *db, u_int flags);
+int (*seq)(const DB *db, DBT *key, DBT *data, u_int flags);
+.RE
+} DB;
+.fi
+.PP
+These elements describe a database type and a set of functions performing
+various actions.
+These functions take a pointer to a structure as returned by
+.IR dbopen ,
+and sometimes one or more pointers to key/data structures and a flag value.
+.TP
+type
+The type of the underlying access method (and file format).
+.TP
+close
+A pointer to a routine to flush any cached information to disk, free any
+allocated resources, and close the underlying file(s).
+Since key/data pairs may be cached in memory, failing to sync the file
+with a
+.I close
+or
+.I sync
+function may result in inconsistent or lost information.
+.I Close
+routines return -1 on error (setting
+.IR errno )
+and 0 on success.
+.TP
+del
+A pointer to a routine to remove key/data pairs from the database.
+.IP
+The parameter
+.I flag
+may be set to the following value:
+.RS
+.TP
+R_CURSOR
+Delete the record referenced by the cursor.
+The cursor must have previously been initialized.
+.RE
+.IP
+.I Delete
+routines return -1 on error (setting
+.IR errno ),
+0 on success, and 1 if the specified
+.I key
+was not in the file.
+.TP
+fd
+A pointer to a routine which returns a file descriptor representative
+of the underlying database.
+A file descriptor referencing the same file will be returned to all
+processes which call
+.I dbopen
+with the same
+.I file
+name.
+This file descriptor may be safely used as an argument to the
+.IR fcntl (2)
+and
+.IR flock (2)
+locking functions.
+The file descriptor is not necessarily associated with any of the
+underlying files used by the access method.
+No file descriptor is available for in memory databases.
+.I Fd
+routines return -1 on error (setting
+.IR errno ),
+and the file descriptor on success.
+.TP
+get
+A pointer to a routine which is the interface for keyed retrieval from
+the database.
+The address and length of the data associated with the specified
+.I key
+are returned in the structure referenced by
+.IR data .
+.I Get
+routines return -1 on error (setting
+.IR errno ),
+0 on success, and 1 if the
+.I key
+was not in the file.
+.TP
+put
+A pointer to a routine to store key/data pairs in the database.
+.IP
+The parameter
+.I flag
+may be set to one of the following values:
+.RS
+.TP
+R_CURSOR
+Replace the key/data pair referenced by the cursor.
+The cursor must have previously been initialized.
+.TP
+R_IAFTER
+Append the data immediately after the data referenced by
+.IR key ,
+creating a new key/data pair.
+The record number of the appended key/data pair is returned in the
+.I key
+structure.
+(Applicable only to the DB_RECNO access method.)
+.TP
+R_IBEFORE
+Insert the data immediately before the data referenced by
+.IR key ,
+creating a new key/data pair.
+The record number of the inserted key/data pair is returned in the
+.I key
+structure.
+(Applicable only to the DB_RECNO access method.)
+.TP
+R_NOOVERWRITE
+Enter the new key/data pair only if the key does not previously exist.
+.TP
+R_SETCURSOR
+Store the key/data pair, setting or initializing the position of the
+cursor to reference it.
+(Applicable only to the DB_BTREE and DB_RECNO access methods.)
+.RE
+.IP
+R_SETCURSOR is available only for the DB_BTREE and DB_RECNO access
+methods because it implies that the keys have an inherent order
+which does not change.
+.IP
+R_IAFTER and R_IBEFORE are available only for the DB_RECNO
+access method because they each imply that the access method is able to
+create new keys.
+This is only true if the keys are ordered and independent, record numbers
+for example.
+.IP
+The default behavior of the
+.I put
+routines is to enter the new key/data pair, replacing any previously
+existing key.
+.IP
+.I Put
+routines return -1 on error (setting
+.IR errno ),
+0 on success, and 1 if the R_NOOVERWRITE
+.I flag
+was set and the key already exists in the file.
+.TP
+seq
+A pointer to a routine which is the interface for sequential
+retrieval from the database.
+The address and length of the key are returned in the structure
+referenced by
+.IR key ,
+and the address and length of the data are returned in the
+structure referenced
+by
+.IR data .
+.IP
+Sequential key/data pair retrieval may begin at any time, and the
+position of the ``cursor'' is not affected by calls to the
+.IR del ,
+.IR get ,
+.IR put ,
+or
+.I sync
+routines.
+Modifications to the database during a sequential scan will be reflected
+in the scan, i.e. records inserted behind the cursor will not be returned
+while records inserted in front of the cursor will be returned.
+.IP
+The flag value
+.B must
+be set to one of the following values:
+.RS
+.TP
+R_CURSOR
+The data associated with the specified key is returned.
+This differs from the
+.I get
+routines in that it sets or initializes the cursor to the location of
+the key as well.
+(Note, for the DB_BTREE access method, the returned key is not necessarily an
+exact match for the specified key.
+The returned key is the smallest key greater than or equal to the specified
+key, permitting partial key matches and range searches.)
+.TP
+R_FIRST
+The first key/data pair of the database is returned, and the cursor
+is set or initialized to reference it.
+.TP
+R_LAST
+The last key/data pair of the database is returned, and the cursor
+is set or initialized to reference it.
+(Applicable only to the DB_BTREE and DB_RECNO access methods.)
+.TP
+R_NEXT
+Retrieve the key/data pair immediately after the cursor.
+If the cursor is not yet set, this is the same as the R_FIRST flag.
+.TP
+R_PREV
+Retrieve the key/data pair immediately before the cursor.
+If the cursor is not yet set, this is the same as the R_LAST flag.
+(Applicable only to the DB_BTREE and DB_RECNO access methods.)
+.RE
+.IP
+R_LAST and R_PREV are available only for the DB_BTREE and DB_RECNO
+access methods because they each imply that the keys have an inherent
+order which does not change.
+.IP
+.I Seq
+routines return -1 on error (setting
+.IR errno ),
+0 on success and 1 if there are no key/data pairs less than or greater
+than the specified or current key.
+If the DB_RECNO access method is being used, and if the database file
+is a character special file and no complete key/data pairs are currently
+available, the
+.I seq
+routines return 2.
+.TP
+sync
+A pointer to a routine to flush any cached information to disk.
+If the database is in memory only, the
+.I sync
+routine has no effect and will always succeed.
+.IP
+The flag value may be set to the following value:
+.RS
+.TP
+R_RECNOSYNC
+If the DB_RECNO access method is being used, this flag causes
+the sync routine to apply to the btree file which underlies the
+recno file, not the recno file itself.
+(See the
+.I bfname
+field of the
+.IR recno (3)
+manual page for more information.)
+.RE
+.IP
+.I Sync
+routines return -1 on error (setting
+.IR errno )
+and 0 on success.
+.SH "KEY/DATA PAIRS"
+Access to all file types is based on key/data pairs.
+Both keys and data are represented by the following data structure:
+.PP
+typedef struct {
+.RS
+void *data;
+.br
+size_t size;
+.RE
+} DBT;
+.PP
+The elements of the DBT structure are defined as follows:
+.TP
+data
+A pointer to a byte string.
+.TP
+size
+The length of the byte string.
+.PP
+Key and data byte strings may reference strings of essentially unlimited
+length although any two of them must fit into available memory at the same
+time.
+It should be noted that the access methods provide no guarantees about
+byte string alignment.
+.SH ERRORS
+The
+.I dbopen
+routine may fail and set
+.I errno
+for any of the errors specified for the library routines
+.IR open (2)
+and
+.IR malloc (3)
+or the following:
+.TP
+[EFTYPE]
+A file is incorrectly formatted.
+.TP
+[EINVAL]
+A parameter has been specified (hash function, pad byte etc.) that is
+incompatible with the current file specification or which is not
+meaningful for the function (for example, use of the cursor without
+prior initialization) or there is a mismatch between the version
+number of file and the software.
+.PP
+The
+.I close
+routines may fail and set
+.I errno
+for any of the errors specified for the library routines
+.IR close (2),
+.IR read (2),
+.IR write (2),
+.IR free (3),
+or
+.IR fsync (2).
+.PP
+The
+.IR del ,
+.IR get ,
+.I put
+and
+.I seq
+routines may fail and set
+.I errno
+for any of the errors specified for the library routines
+.IR read (2),
+.IR write (2),
+.IR free (3)
+or
+.IR malloc (3).
+.PP
+The
+.I fd
+routines will fail and set
+.I errno
+to ENOENT for in memory databases.
+.PP
+The
+.I sync
+routines may fail and set
+.I errno
+for any of the errors specified for the library routine
+.IR fsync (2).
+.SH "SEE ALSO"
+.IR btree (3),
+.IR hash (3),
+.IR mpool (3),
+.IR recno (3)
+.sp
+.IR "LIBTP: Portable, Modular Transactions for UNIX" ,
+Margo Seltzer, Michael Olson, USENIX proceedings, Winter 1992.
+.SH BUGS
+The typedef DBT is a mnemonic for ``data base thang'', and was used
+because noone could think of a reasonable name that wasn't already used.
+.PP
+The file descriptor interface is a kluge and will be deleted in a
+future version of the interface.
+.PP
+None of the access methods provide any form of concurrent access,
+locking, or transactions.
--- /dev/null
+.\" Copyright (c) 1990, 1993
+.\" The Regents of the University of California. All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\" notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\" notice, this list of conditions and the following disclaimer in the
+.\" documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\" must display the following acknowledgement:
+.\" This product includes software developed by the University of
+.\" California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\" may be used to endorse or promote products derived from this software
+.\" without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\" @(#)hash.3 8.6 (Berkeley) 8/18/94
+.\"
+.TH HASH 3 "August 18, 1994"
+.UC 7
+.SH NAME
+hash \- hash database access method
+.SH SYNOPSIS
+.nf
+.ft B
+#include <sys/types.h>
+#include <db.h>
+.ft R
+.fi
+.SH DESCRIPTION
+The routine
+.IR dbopen
+is the library interface to database files.
+One of the supported file formats is hash files.
+The general description of the database access methods is in
+.IR dbopen (3),
+this manual page describes only the hash specific information.
+.PP
+The hash data structure is an extensible, dynamic hashing scheme.
+.PP
+The access method specific data structure provided to
+.I dbopen
+is defined in the <db.h> include file as follows:
+.sp
+typedef struct {
+.RS
+u_int bsize;
+.br
+u_int ffactor;
+.br
+u_int nelem;
+.br
+u_int cachesize;
+.br
+u_int32_t (*hash)(const void *, size_t);
+.br
+int lorder;
+.RE
+} HASHINFO;
+.PP
+The elements of this structure are as follows:
+.TP
+bsize
+.I Bsize
+defines the hash table bucket size, and is, by default, 256 bytes.
+It may be preferable to increase the page size for disk-resident tables
+and tables with large data items.
+.TP
+ffactor
+.I Ffactor
+indicates a desired density within the hash table.
+It is an approximation of the number of keys allowed to accumulate in any
+one bucket, determining when the hash table grows or shrinks.
+The default value is 8.
+.TP
+nelem
+.I Nelem
+is an estimate of the final size of the hash table.
+If not set or set too low, hash tables will expand gracefully as keys
+are entered, although a slight performance degradation may be noticed.
+The default value is 1.
+.TP
+cachesize
+A suggested maximum size, in bytes, of the memory cache.
+This value is
+.B only
+advisory, and the access method will allocate more memory rather
+than fail.
+.TP
+hash
+.I Hash
+is a user defined hash function.
+Since no hash function performs equally well on all possible data, the
+user may find that the built-in hash function does poorly on a particular
+data set.
+User specified hash functions must take two arguments (a pointer to a byte
+string and a length) and return a 32-bit quantity to be used as the hash
+value.
+.TP
+lorder
+The byte order for integers in the stored database metadata.
+The number should represent the order as an integer; for example,
+big endian order would be the number 4,321.
+If
+.I lorder
+is 0 (no order is specified) the current host order is used.
+If the file already exists, the specified value is ignored and the
+value specified when the tree was created is used.
+.PP
+If the file already exists (and the O_TRUNC flag is not specified), the
+values specified for the parameters bsize, ffactor, lorder and nelem are
+ignored and the values specified when the tree was created are used.
+.PP
+If a hash function is specified,
+.I hash_open
+will attempt to determine if the hash function specified is the same as
+the one with which the database was created, and will fail if it is not.
+.PP
+Backward compatible interfaces to the routines described in
+.IR dbm (3),
+and
+.IR ndbm (3)
+are provided, however these interfaces are not compatible with
+previous file formats.
+.SH ERRORS
+The
+.I hash
+access method routines may fail and set
+.I errno
+for any of the errors specified for the library routine
+.IR dbopen (3).
+.SH "SEE ALSO"
+.IR btree (3),
+.IR dbopen (3),
+.IR mpool (3),
+.IR recno (3)
+.sp
+.IR "Dynamic Hash Tables" ,
+Per-Ake Larson, Communications of the ACM, April 1988.
+.sp
+.IR "A New Hash Package for UNIX" ,
+Margo Seltzer, USENIX Proceedings, Winter 1991.
+.SH BUGS
+Only big and little endian byte order is supported.
--- /dev/null
+.\" Copyright (c) 1990, 1993
+.\" The Regents of the University of California. All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\" notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\" notice, this list of conditions and the following disclaimer in the
+.\" documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\" must display the following acknowledgement:
+.\" This product includes software developed by the University of
+.\" California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\" may be used to endorse or promote products derived from this software
+.\" without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\" @(#)mpool.3 8.1 (Berkeley) 6/4/93
+.\"
+.TH MPOOL 3 "June 4, 1993"
+.UC 7
+.SH NAME
+mpool \- shared memory buffer pool
+.SH SYNOPSIS
+.nf
+.ft B
+#include <db.h>
+#include <mpool.h>
+
+MPOOL *
+mpool_open (DBT *key, int fd, pgno_t pagesize, pgno_t maxcache);
+
+void
+mpool_filter (MPOOL *mp, void (*pgin)(void *, pgno_t, void *),
+.ti +5
+void (*pgout)(void *, pgno_t, void *), void *pgcookie);
+
+void *
+mpool_new (MPOOL *mp, pgno_t *pgnoaddr);
+
+void *
+mpool_get (MPOOL *mp, pgno_t pgno, u_int flags);
+
+int
+mpool_put (MPOOL *mp, void *pgaddr, u_int flags);
+
+int
+mpool_sync (MPOOL *mp);
+
+int
+mpool_close (MPOOL *mp);
+.ft R
+.fi
+.SH DESCRIPTION
+.IR Mpool
+is the library interface intended to provide page oriented buffer management
+of files.
+The buffers may be shared between processes.
+.PP
+The function
+.I mpool_open
+initializes a memory pool.
+The
+.I key
+argument is the byte string used to negotiate between multiple
+processes wishing to share buffers.
+If the file buffers are mapped in shared memory, all processes using
+the same key will share the buffers.
+If
+.I key
+is NULL, the buffers are mapped into private memory.
+The
+.I fd
+argument is a file descriptor for the underlying file, which must be seekable.
+If
+.I key
+is non-NULL and matches a file already being mapped, the
+.I fd
+argument is ignored.
+.PP
+The
+.I pagesize
+argument is the size, in bytes, of the pages into which the file is broken up.
+The
+.I maxcache
+argument is the maximum number of pages from the underlying file to cache
+at any one time.
+This value is not relative to the number of processes which share a file's
+buffers, but will be the largest value specified by any of the processes
+sharing the file.
+.PP
+The
+.I mpool_filter
+function is intended to make transparent input and output processing of the
+pages possible.
+If the
+.I pgin
+function is specified, it is called each time a buffer is read into the memory
+pool from the backing file.
+If the
+.I pgout
+function is specified, it is called each time a buffer is written into the
+backing file.
+Both functions are are called with the
+.I pgcookie
+pointer, the page number and a pointer to the page to being read or written.
+.PP
+The function
+.I mpool_new
+takes an MPOOL pointer and an address as arguments.
+If a new page can be allocated, a pointer to the page is returned and
+the page number is stored into the
+.I pgnoaddr
+address.
+Otherwise, NULL is returned and errno is set.
+.PP
+The function
+.I mpool_get
+takes a MPOOL pointer and a page number as arguments.
+If the page exists, a pointer to the page is returned.
+Otherwise, NULL is returned and errno is set.
+The flags parameter is not currently used.
+.PP
+The function
+.I mpool_put
+unpins the page referenced by
+.IR pgaddr .
+.I Pgaddr
+must be an address previously returned by
+.I mpool_get
+or
+.IR mpool_new .
+The flag value is specified by
+.IR or 'ing
+any of the following values:
+.TP
+MPOOL_DIRTY
+The page has been modified and needs to be written to the backing file.
+.PP
+.I Mpool_put
+returns 0 on success and -1 if an error occurs.
+.PP
+The function
+.I mpool_sync
+writes all modified pages associated with the MPOOL pointer to the
+backing file.
+.I Mpool_sync
+returns 0 on success and -1 if an error occurs.
+.PP
+The
+.I mpool_close
+function free's up any allocated memory associated with the memory pool
+cookie.
+Modified pages are
+.B not
+written to the backing file.
+.I Mpool_close
+returns 0 on success and -1 if an error occurs.
+.SH ERRORS
+The
+.I mpool_open
+function may fail and set
+.I errno
+for any of the errors specified for the library routine
+.IR malloc (3).
+.PP
+The
+.I mpool_get
+function may fail and set
+.I errno
+for the following:
+.TP 15
+[EINVAL]
+The requested record doesn't exist.
+.PP
+The
+.I mpool_new
+and
+.I mpool_get
+functions may fail and set
+.I errno
+for any of the errors specified for the library routines
+.IR read (2) ,
+.IR write (2) ,
+and
+.IR malloc (3).
+.PP
+The
+.I mpool_sync
+function may fail and set
+.I errno
+for any of the errors specified for the library routine
+.IR write (2).
+.PP
+The
+.I mpool_close
+function may fail and set
+.I errno
+for any of the errors specified for the library routine
+.IR free (3).
+.SH "SEE ALSO"
+.IR dbopen (3),
+.IR btree (3),
+.IR hash (3),
+.IR recno (3)
--- /dev/null
+.\" Copyright (c) 1990, 1993
+.\" The Regents of the University of California. All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\" notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\" notice, this list of conditions and the following disclaimer in the
+.\" documentation and/or other materials provided with the distribution.
+.\" 3. All advertising materials mentioning features or use of this software
+.\" must display the following acknowledgement:
+.\" This product includes software developed by the University of
+.\" California, Berkeley and its contributors.
+.\" 4. Neither the name of the University nor the names of its contributors
+.\" may be used to endorse or promote products derived from this software
+.\" without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\" @(#)recno.3 8.5 (Berkeley) 8/18/94
+.\"
+.TH RECNO 3 "August 18, 1994"
+.UC 7
+.SH NAME
+recno \- record number database access method
+.SH SYNOPSIS
+.nf
+.ft B
+#include <sys/types.h>
+#include <db.h>
+.ft R
+.fi
+.SH DESCRIPTION
+The routine
+.IR dbopen
+is the library interface to database files.
+One of the supported file formats is record number files.
+The general description of the database access methods is in
+.IR dbopen (3),
+this manual page describes only the recno specific information.
+.PP
+The record number data structure is either variable or fixed-length
+records stored in a flat-file format, accessed by the logical record
+number.
+The existence of record number five implies the existence of records
+one through four, and the deletion of record number one causes
+record number five to be renumbered to record number four, as well
+as the cursor, if positioned after record number one, to shift down
+one record.
+.PP
+The recno access method specific data structure provided to
+.I dbopen
+is defined in the <db.h> include file as follows:
+.PP
+typedef struct {
+.RS
+u_long flags;
+.br
+u_int cachesize;
+.br
+u_int psize;
+.br
+int lorder;
+.br
+size_t reclen;
+.br
+u_char bval;
+.br
+char *bfname;
+.RE
+} RECNOINFO;
+.PP
+The elements of this structure are defined as follows:
+.TP
+flags
+The flag value is specified by
+.IR or 'ing
+any of the following values:
+.RS
+.TP
+R_FIXEDLEN
+The records are fixed-length, not byte delimited.
+The structure element
+.I reclen
+specifies the length of the record, and the structure element
+.I bval
+is used as the pad character.
+Any records, inserted into the database, that are less than
+.I reclen
+bytes long are automatically padded.
+.TP
+R_NOKEY
+In the interface specified by
+.IR dbopen ,
+the sequential record retrieval fills in both the caller's key and
+data structures.
+If the R_NOKEY flag is specified, the
+.I cursor
+routines are not required to fill in the key structure.
+This permits applications to retrieve records at the end of files without
+reading all of the intervening records.
+.TP
+R_SNAPSHOT
+This flag requires that a snapshot of the file be taken when
+.I dbopen
+is called, instead of permitting any unmodified records to be read from
+the original file.
+.RE
+.TP
+cachesize
+A suggested maximum size, in bytes, of the memory cache.
+This value is
+.B only
+advisory, and the access method will allocate more memory rather than fail.
+If
+.I cachesize
+is 0 (no size is specified) a default cache is used.
+.TP
+psize
+The recno access method stores the in-memory copies of its records
+in a btree.
+This value is the size (in bytes) of the pages used for nodes in that tree.
+If
+.I psize
+is 0 (no page size is specified) a page size is chosen based on the
+underlying file system I/O block size.
+See
+.IR btree (3)
+for more information.
+.TP
+lorder
+The byte order for integers in the stored database metadata.
+The number should represent the order as an integer; for example,
+big endian order would be the number 4,321.
+If
+.I lorder
+is 0 (no order is specified) the current host order is used.
+.TP
+reclen
+The length of a fixed-length record.
+.TP
+bval
+The delimiting byte to be used to mark the end of a record for
+variable-length records, and the pad character for fixed-length
+records.
+If no value is specified, newlines (``\en'') are used to mark the end
+of variable-length records and fixed-length records are padded with
+spaces.
+.TP
+bfname
+The recno access method stores the in-memory copies of its records
+in a btree.
+If bfname is non-NULL, it specifies the name of the btree file,
+as if specified as the file name for a dbopen of a btree file.
+.PP
+The data part of the key/data pair used by the recno access method
+is the same as other access methods.
+The key is different.
+The
+.I data
+field of the key should be a pointer to a memory location of type
+.IR recno_t ,
+as defined in the <db.h> include file.
+This type is normally the largest unsigned integral type available to
+the implementation.
+The
+.I size
+field of the key should be the size of that type.
+.PP
+Because there can be no meta-data associated with the underlying
+recno access method files, any changes made to the default values
+(e.g. fixed record length or byte separator value) must be explicitly
+specified each time the file is opened.
+.PP
+In the interface specified by
+.IR dbopen ,
+using the
+.I put
+interface to create a new record will cause the creation of multiple,
+empty records if the record number is more than one greater than the
+largest record currently in the database.
+.SH ERRORS
+The
+.I recno
+access method routines may fail and set
+.I errno
+for any of the errors specified for the library routine
+.IR dbopen (3)
+or the following:
+.TP
+[EINVAL]
+An attempt was made to add a record to a fixed-length database that
+was too large to fit.
+.SH "SEE ALSO"
+.IR btree (3)
+.IR dbopen (3),
+.IR hash (3),
+.IR mpool (3),
+.sp
+.IR "Document Processing in a Relational Database System" ,
+Michael Stonebraker, Heidi Stettner, Joseph Kalash, Antonin Guttman,
+Nadene Lynn, Memorandum No. UCB/ERL M82/32, May 1982.
+.SH BUGS
+Only big and little endian byte order is supported.
--- /dev/null
+# @(#)Makefile.inc 8.1 (Berkeley) 6/4/93
+
+.PATH: ${.CURDIR}/db/mpool
+
+SRCS+= mpool.c
--- /dev/null
+# @(#)README 8.1 (Berkeley) 6/4/93
+
+These are the current memory pool routines.
+They aren't ready for prime time, yet, and
+the interface is expected to change.
+
+--keith
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)mpool.c 8.5 (Berkeley) 7/26/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <sys/queue.h>
+#include <sys/stat.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <db.h>
+
+#define __MPOOLINTERFACE_PRIVATE
+#include <mpool.h>
+
+static BKT *mpool_bkt __P((MPOOL *));
+static BKT *mpool_look __P((MPOOL *, pgno_t));
+static int mpool_write __P((MPOOL *, BKT *));
+
+/*
+ * mpool_open --
+ * Initialize a memory pool.
+ */
+MPOOL *
+mpool_open(key, fd, pagesize, maxcache)
+ void *key;
+ int fd;
+ pgno_t pagesize, maxcache;
+{
+ struct stat sb;
+ MPOOL *mp;
+ int entry;
+
+ /*
+ * Get information about the file.
+ *
+ * XXX
+ * We don't currently handle pipes, although we should.
+ */
+ if (fstat(fd, &sb))
+ return (NULL);
+ if (!S_ISREG(sb.st_mode)) {
+ errno = ESPIPE;
+ return (NULL);
+ }
+
+ /* Allocate and initialize the MPOOL cookie. */
+ if ((mp = (MPOOL *)calloc(1, sizeof(MPOOL))) == NULL)
+ return (NULL);
+ CIRCLEQ_INIT(&mp->lqh);
+ for (entry = 0; entry < HASHSIZE; ++entry)
+ CIRCLEQ_INIT(&mp->hqh[entry]);
+ mp->maxcache = maxcache;
+ mp->npages = sb.st_size / pagesize;
+ mp->pagesize = pagesize;
+ mp->fd = fd;
+ return (mp);
+}
+
+/*
+ * mpool_filter --
+ * Initialize input/output filters.
+ */
+void
+mpool_filter(mp, pgin, pgout, pgcookie)
+ MPOOL *mp;
+ void (*pgin) __P((void *, pgno_t, void *));
+ void (*pgout) __P((void *, pgno_t, void *));
+ void *pgcookie;
+{
+ mp->pgin = pgin;
+ mp->pgout = pgout;
+ mp->pgcookie = pgcookie;
+}
+
+/*
+ * mpool_new --
+ * Get a new page of memory.
+ */
+void *
+mpool_new(mp, pgnoaddr)
+ MPOOL *mp;
+ pgno_t *pgnoaddr;
+{
+ struct _hqh *head;
+ BKT *bp;
+
+ if (mp->npages == MAX_PAGE_NUMBER) {
+ (void)fprintf(stderr, "mpool_new: page allocation overflow.\n");
+ abort();
+ }
+#ifdef STATISTICS
+ ++mp->pagenew;
+#endif
+ /*
+ * Get a BKT from the cache. Assign a new page number, attach
+ * it to the head of the hash chain, the tail of the lru chain,
+ * and return.
+ */
+ if ((bp = mpool_bkt(mp)) == NULL)
+ return (NULL);
+ *pgnoaddr = bp->pgno = mp->npages++;
+ bp->flags = MPOOL_PINNED;
+
+ head = &mp->hqh[HASHKEY(bp->pgno)];
+ CIRCLEQ_INSERT_HEAD(head, bp, hq);
+ CIRCLEQ_INSERT_TAIL(&mp->lqh, bp, q);
+ return (bp->page);
+}
+
+/*
+ * mpool_get
+ * Get a page.
+ */
+void *
+mpool_get(mp, pgno, flags)
+ MPOOL *mp;
+ pgno_t pgno;
+ u_int flags; /* XXX not used? */
+{
+ struct _hqh *head;
+ BKT *bp;
+ off_t off;
+ int nr;
+
+ /* Check for attempt to retrieve a non-existent page. */
+ if (pgno >= mp->npages) {
+ errno = EINVAL;
+ return (NULL);
+ }
+
+#ifdef STATISTICS
+ ++mp->pageget;
+#endif
+
+ /* Check for a page that is cached. */
+ if ((bp = mpool_look(mp, pgno)) != NULL) {
+#ifdef DEBUG
+ if (bp->flags & MPOOL_PINNED) {
+ (void)fprintf(stderr,
+ "mpool_get: page %d already pinned\n", bp->pgno);
+ abort();
+ }
+#endif
+ /*
+ * Move the page to the head of the hash chain and the tail
+ * of the lru chain.
+ */
+ head = &mp->hqh[HASHKEY(bp->pgno)];
+ CIRCLEQ_REMOVE(head, bp, hq);
+ CIRCLEQ_INSERT_HEAD(head, bp, hq);
+ CIRCLEQ_REMOVE(&mp->lqh, bp, q);
+ CIRCLEQ_INSERT_TAIL(&mp->lqh, bp, q);
+
+ /* Return a pinned page. */
+ bp->flags |= MPOOL_PINNED;
+ return (bp->page);
+ }
+
+ /* Get a page from the cache. */
+ if ((bp = mpool_bkt(mp)) == NULL)
+ return (NULL);
+
+ /* Read in the contents. */
+#ifdef STATISTICS
+ ++mp->pageread;
+#endif
+ off = mp->pagesize * pgno;
+ if (lseek(mp->fd, off, SEEK_SET) != off)
+ return (NULL);
+ if ((nr = read(mp->fd, bp->page, mp->pagesize)) != mp->pagesize) {
+ if (nr >= 0)
+ errno = EFTYPE;
+ return (NULL);
+ }
+
+ /* Set the page number, pin the page. */
+ bp->pgno = pgno;
+ bp->flags = MPOOL_PINNED;
+
+ /*
+ * Add the page to the head of the hash chain and the tail
+ * of the lru chain.
+ */
+ head = &mp->hqh[HASHKEY(bp->pgno)];
+ CIRCLEQ_INSERT_HEAD(head, bp, hq);
+ CIRCLEQ_INSERT_TAIL(&mp->lqh, bp, q);
+
+ /* Run through the user's filter. */
+ if (mp->pgin != NULL)
+ (mp->pgin)(mp->pgcookie, bp->pgno, bp->page);
+
+ return (bp->page);
+}
+
+/*
+ * mpool_put
+ * Return a page.
+ */
+int
+mpool_put(mp, page, flags)
+ MPOOL *mp;
+ void *page;
+ u_int flags;
+{
+ BKT *bp;
+
+#ifdef STATISTICS
+ ++mp->pageput;
+#endif
+ bp = (BKT *)((char *)page - sizeof(BKT));
+#ifdef DEBUG
+ if (!(bp->flags & MPOOL_PINNED)) {
+ (void)fprintf(stderr,
+ "mpool_put: page %d not pinned\n", bp->pgno);
+ abort();
+ }
+#endif
+ bp->flags &= ~MPOOL_PINNED;
+ bp->flags |= flags & MPOOL_DIRTY;
+ return (RET_SUCCESS);
+}
+
+/*
+ * mpool_close
+ * Close the buffer pool.
+ */
+int
+mpool_close(mp)
+ MPOOL *mp;
+{
+ BKT *bp;
+
+ /* Free up any space allocated to the lru pages. */
+ while ((bp = mp->lqh.cqh_first) != (void *)&mp->lqh) {
+ CIRCLEQ_REMOVE(&mp->lqh, mp->lqh.cqh_first, q);
+ free(bp);
+ }
+
+ /* Free the MPOOL cookie. */
+ free(mp);
+ return (RET_SUCCESS);
+}
+
+/*
+ * mpool_sync
+ * Sync the pool to disk.
+ */
+int
+mpool_sync(mp)
+ MPOOL *mp;
+{
+ BKT *bp;
+
+ /* Walk the lru chain, flushing any dirty pages to disk. */
+ for (bp = mp->lqh.cqh_first;
+ bp != (void *)&mp->lqh; bp = bp->q.cqe_next)
+ if (bp->flags & MPOOL_DIRTY &&
+ mpool_write(mp, bp) == RET_ERROR)
+ return (RET_ERROR);
+
+ /* Sync the file descriptor. */
+ return (fsync(mp->fd) ? RET_ERROR : RET_SUCCESS);
+}
+
+/*
+ * mpool_bkt
+ * Get a page from the cache (or create one).
+ */
+static BKT *
+mpool_bkt(mp)
+ MPOOL *mp;
+{
+ struct _hqh *head;
+ BKT *bp;
+
+ /* If under the max cached, always create a new page. */
+ if (mp->curcache < mp->maxcache)
+ goto new;
+
+ /*
+ * If the cache is max'd out, walk the lru list for a buffer we
+ * can flush. If we find one, write it (if necessary) and take it
+ * off any lists. If we don't find anything we grow the cache anyway.
+ * The cache never shrinks.
+ */
+ for (bp = mp->lqh.cqh_first;
+ bp != (void *)&mp->lqh; bp = bp->q.cqe_next)
+ if (!(bp->flags & MPOOL_PINNED)) {
+ /* Flush if dirty. */
+ if (bp->flags & MPOOL_DIRTY &&
+ mpool_write(mp, bp) == RET_ERROR)
+ return (NULL);
+#ifdef STATISTICS
+ ++mp->pageflush;
+#endif
+ /* Remove from the hash and lru queues. */
+ head = &mp->hqh[HASHKEY(bp->pgno)];
+ CIRCLEQ_REMOVE(head, bp, hq);
+ CIRCLEQ_REMOVE(&mp->lqh, bp, q);
+#ifdef DEBUG
+ { void *spage;
+ spage = bp->page;
+ memset(bp, 0xff, sizeof(BKT) + mp->pagesize);
+ bp->page = spage;
+ }
+#endif
+ return (bp);
+ }
+
+new: if ((bp = (BKT *)malloc(sizeof(BKT) + mp->pagesize)) == NULL)
+ return (NULL);
+#ifdef STATISTICS
+ ++mp->pagealloc;
+#endif
+#if defined(DEBUG) || defined(PURIFY)
+ memset(bp, 0xff, sizeof(BKT) + mp->pagesize);
+#endif
+ bp->page = (char *)bp + sizeof(BKT);
+ ++mp->curcache;
+ return (bp);
+}
+
+/*
+ * mpool_write
+ * Write a page to disk.
+ */
+static int
+mpool_write(mp, bp)
+ MPOOL *mp;
+ BKT *bp;
+{
+ off_t off;
+
+#ifdef STATISTICS
+ ++mp->pagewrite;
+#endif
+
+ /* Run through the user's filter. */
+ if (mp->pgout)
+ (mp->pgout)(mp->pgcookie, bp->pgno, bp->page);
+
+ off = mp->pagesize * bp->pgno;
+ if (lseek(mp->fd, off, SEEK_SET) != off)
+ return (RET_ERROR);
+ if (write(mp->fd, bp->page, mp->pagesize) != mp->pagesize)
+ return (RET_ERROR);
+
+ bp->flags &= ~MPOOL_DIRTY;
+ return (RET_SUCCESS);
+}
+
+/*
+ * mpool_look
+ * Lookup a page in the cache.
+ */
+static BKT *
+mpool_look(mp, pgno)
+ MPOOL *mp;
+ pgno_t pgno;
+{
+ struct _hqh *head;
+ BKT *bp;
+
+ head = &mp->hqh[HASHKEY(pgno)];
+ for (bp = head->cqh_first; bp != (void *)head; bp = bp->hq.cqe_next)
+ if (bp->pgno == pgno) {
+#ifdef STATISTICS
+ ++mp->cachehit;
+#endif
+ return (bp);
+ }
+#ifdef STATISTICS
+ ++mp->cachemiss;
+#endif
+ return (NULL);
+}
+
+#ifdef STATISTICS
+/*
+ * mpool_stat
+ * Print out cache statistics.
+ */
+void
+mpool_stat(mp)
+ MPOOL *mp;
+{
+ BKT *bp;
+ int cnt;
+ char *sep;
+
+ (void)fprintf(stderr, "%lu pages in the file\n", mp->npages);
+ (void)fprintf(stderr,
+ "page size %lu, cacheing %lu pages of %lu page max cache\n",
+ mp->pagesize, mp->curcache, mp->maxcache);
+ (void)fprintf(stderr, "%lu page puts, %lu page gets, %lu page new\n",
+ mp->pageput, mp->pageget, mp->pagenew);
+ (void)fprintf(stderr, "%lu page allocs, %lu page flushes\n",
+ mp->pagealloc, mp->pageflush);
+ if (mp->cachehit + mp->cachemiss)
+ (void)fprintf(stderr,
+ "%.0f%% cache hit rate (%lu hits, %lu misses)\n",
+ ((double)mp->cachehit / (mp->cachehit + mp->cachemiss))
+ * 100, mp->cachehit, mp->cachemiss);
+ (void)fprintf(stderr, "%lu page reads, %lu page writes\n",
+ mp->pageread, mp->pagewrite);
+
+ sep = "";
+ cnt = 0;
+ for (bp = mp->lqh.cqh_first;
+ bp != (void *)&mp->lqh; bp = bp->q.cqe_next) {
+ (void)fprintf(stderr, "%s%d", sep, bp->pgno);
+ if (bp->flags & MPOOL_DIRTY)
+ (void)fprintf(stderr, "d");
+ if (bp->flags & MPOOL_PINNED)
+ (void)fprintf(stderr, "P");
+ if (++cnt == 10) {
+ sep = "\n";
+ cnt = 0;
+ } else
+ sep = ", ";
+
+ }
+ (void)fprintf(stderr, "\n");
+}
+#endif
--- /dev/null
+/******************************************************************************
+
+VERSION $Id: buf.c,v 1.26 92/01/09 09:15:26 margo Exp $
+PACKAGE: User Level Shared Memory Manager
+
+DESCRIPTION:
+ This package provides a buffer pool interface implemented as
+ a collection of file pages mapped into shared memory.
+
+ Based on Mark's buffer manager
+
+ROUTINES:
+ External
+ buf_alloc
+ buf_flags
+ buf_get
+ buf_init
+ buf_last
+ buf_open
+ buf_pin
+ buf_sync
+ buf_unpin
+ Internal
+ bf_assign_buf
+ bf_fid_to_fd
+ bf_newbuf
+ bf_put_page
+
+
+******************************************************************************/
+#include <sys/types.h>
+#include <assert.h>
+#include <sys/file.h>
+#include <sys/stat.h>
+#include <stdio.h>
+#include <errno.h>
+#include "list.h"
+#include "user.h"
+#include "txn_sys.h"
+#include "buf.h"
+#include "semkeys.h"
+#include "error.h"
+
+/*
+ we need to translate between some type of file id that the user
+ process passes and a file descriptor. For now, it's a nop.
+*/
+#define GET_MASTER get_sem ( buf_spinlock )
+#define RELEASE_MASTER release_sem ( buf_spinlock )
+
+#define LRUID *buf_lru
+#define LRUP (bufhdr_table+*buf_lru)
+#define MRU bufhdr_table[*buf_lru].lru.prev
+
+/* Global indicator that you have started reusing buffers */
+int do_statistics = 0;
+/*
+ Process Statics (pointers into shared memory)
+*/
+static BUF_T *buf_table = 0;
+static BUFHDR_T *bufhdr_table;
+static int *buf_hash_table;
+static int *buf_lru; /* LRU is the free list */
+static int buf_spinlock;
+static FINFO_T *buf_fids;
+static int *buf_sp; /* Pointer to string free space */
+static char *buf_strings;
+
+/* Process Local FID->FD table */
+static int fds[NUM_FILE_ENTRIES];
+
+/* Static routines */
+static BUFHDR_T *bf_assign_buf();
+static int bf_fid_to_fd();
+static BUFHDR_T *bf_newbuf();
+static int bf_put_page();
+
+/*
+ Return 0 on success
+ 1 on failure
+*/
+extern int
+buf_init ( )
+{
+ ADDR_T buf_region;
+ BUFHDR_T *bhp;
+ int i;
+ int ref_count;
+ int *spinlockp;
+
+ /*
+ Initialize Process local structures
+ */
+ for ( i = 0; i < NUM_FILE_ENTRIES; i++ ) {
+ fds[i] = -1;
+ }
+
+ buf_region = attach_region ( BUF_REGION_NAME, BUF_REGION_NUM,
+ BUF_REGION_SIZE, &ref_count );
+ if ( !buf_region ) {
+ return (1);
+ }
+ error_log3 ( "Buf Region: ADDR: %d ID: %d SIZE: %d\n", buf_region,
+ BUF_REGION_NUM, BUF_REGION_SIZE );
+
+ buf_table = (BUF_T *)buf_region;
+ bufhdr_table = (BUFHDR_T *)(buf_table + NUM_BUFS);
+ buf_hash_table = (int *)(bufhdr_table + NUM_BUFS);
+ buf_lru = buf_hash_table + NUMTABLE_ENTRIES;
+ spinlockp = buf_lru + 1;
+ buf_fids = (FINFO_T *)(spinlockp+1);
+ buf_sp = (int *)(buf_fids + NUM_FILE_ENTRIES);
+ buf_strings = (char *)(buf_sp + 1);
+
+ /* Create locking spinlock (gets creating holding the lock) */
+ buf_spinlock = create_sem ( BUF_SPIN_NAME, BUF_SPIN_NUM, ref_count <= 1 );
+ if ( buf_spinlock < 0 ) {
+ return(1);
+ }
+ if ( ref_count <= 1 ) {
+ *spinlockp = buf_spinlock;
+
+ /* Now initialize the buffer manager */
+
+ /* 1. Free list */
+ *buf_lru = 0;
+
+ /* 2. Buffer headers */
+ for ( i = 0, bhp = bufhdr_table; i < NUM_BUFS; bhp++, i++ ) {
+ bhp->lru.next = i+1;
+ bhp->lru.prev = i-1;
+ bhp->flags = 0; /* All Flags off */
+ bhp->refcount = 0;
+ bhp->wait_proc = -1; /* No sleepers */
+ LISTPE_INIT ( hash, bhp, i ); /* Hash chains */
+ }
+ bufhdr_table[0].lru.prev = NUM_BUFS-1;
+ bufhdr_table[NUM_BUFS-1].lru.next = 0;
+
+ /* 3. Hash Table */
+ for ( i = 0; i < NUMTABLE_ENTRIES; i++ ) {
+ buf_hash_table[i] = NUM_BUFS;
+ }
+
+ /* 4. File ID Table */
+ for ( i = 0; i < NUM_FILE_ENTRIES; i++ ) {
+ buf_fids[i].offset = -1;
+ buf_fids[i].npages = -1;
+ buf_fids[i].refcount = 0;
+ }
+
+ /* 5. Free String Pointer */
+ *buf_sp = (FILE_NAME_LEN*NUM_FILE_ENTRIES);
+ if (RELEASE_MASTER) {
+ return(1);
+ }
+ error_log0 ( "Initialized buffer region\n" );
+ }
+ return (0);
+}
+
+extern void
+buf_exit()
+{
+ int ref;
+ int i;
+
+ /* Flush Buffer Pool on Exit */
+ for ( i = 0; i < NUM_FILE_ENTRIES; i++ ) {
+ if ( fds[i] != -1 ) {
+ close ( fds[i] );
+ }
+ }
+ if ( buf_table ) {
+ detach_region ( buf_table, BUF_REGION_NUM, BUF_REGION_SIZE, &ref );
+ }
+ return;
+}
+
+/*
+ We need an empty buffer. Find the LRU unpinned NON-Dirty page.
+*/
+static BUFHDR_T *
+bf_newbuf()
+{
+ int fd;
+ int lruid;
+ int nbytes;
+ int ndx;
+ BUFHDR_T *bhp;
+
+ lruid = LRUID;
+ for ( bhp = LRUP;
+ bhp->flags & (BUF_PINNED|BUF_IO_IN_PROGRESS);
+ bhp = LISTP_NEXTP (bufhdr_table, lru, bhp ) ) {
+
+ if ( bhp->lru.next == lruid ) {
+ /* OUT OF BUFFERS */
+ error_log1 ( "All buffers are pinned. %s\n",
+ "Unable to grant buffer request" );
+ return(NULL);
+ }
+ }
+ /* BHP can be used */
+ if ( bhp->flags & BUF_DIRTY ) {
+ do_statistics = 1;
+ /*
+ MIS Check for log flushed appropriately
+ */
+ fd = bf_fid_to_fd(bhp->id.file_id);
+ if ( fd == -1 ) {
+ error_log1 ("Invalid fid %d\n", bhp->id.file_id);
+ return(NULL);
+ }
+ if ( bf_put_page(fd, bhp) < 0 ) {
+ return(NULL);
+ }
+ }
+ /* Update Hash Pointers */
+ ndx = BUF_HASH ( bhp->id.file_id, bhp->id.obj_id );
+ LISTP_REMOVE(bufhdr_table, hash, bhp);
+ if ( buf_hash_table[ndx] == (bhp-bufhdr_table) ) {
+ if ( bhp->hash.next != (bhp-bufhdr_table) ) {
+ buf_hash_table[ndx] = bhp->hash.next;
+ } else {
+ buf_hash_table[ndx] = NUM_BUFS;
+ }
+ }
+ INIT_BUF(bhp);
+
+ return(bhp);
+}
+/*
+ buf_alloc
+
+ Add a page to a file and return a buffer for it.
+
+*/
+ADDR_T
+buf_alloc ( fid, new_pageno )
+int fid;
+int *new_pageno;
+{
+ BUFHDR_T *bhp;
+ int fd;
+ int len;
+ int ndx;
+ OBJ_T fobj;
+
+ if (GET_MASTER) {
+ return(NULL);
+ }
+ if ( buf_fids[fid].npages == -1 ) {
+ /* initialize npages field */
+ fd = bf_fid_to_fd ( fid );
+ }
+ assert (fid < NUM_FILE_ENTRIES);
+
+ *new_pageno = buf_fids[fid].npages;
+ if ( *new_pageno == -1 ) {
+ RELEASE_MASTER;
+ return ( NULL );
+ }
+ buf_fids[fid].npages++;
+ ndx = BUF_HASH ( fid, *new_pageno );
+ fobj.file_id = fid;
+ fobj.obj_id = *new_pageno;
+ bhp = bf_assign_buf ( ndx, &fobj, BF_PIN|BF_DIRTY|BF_EMPTY, &len );
+ if ( RELEASE_MASTER ) {
+ /* Memory leak */
+ return(NULL);
+ }
+ if ( bhp ) {
+ return ((ADDR_T)(buf_table+(bhp-bufhdr_table)));
+ } else {
+ return ( NULL );
+ }
+}
+
+
+/*
+ Buffer Flags
+ BF_DIRTY Mark page as dirty
+ BF_EMPTY Don't initialize page, just get buffer
+ BF_PIN Retrieve with pin
+
+MIS
+Might want to add a flag that sets an LSN for this buffer is the
+DIRTY flag is set
+
+Eventually, you may want a flag that indicates the I/O and lock
+request should be shipped off together, but not for now.
+*/
+extern ADDR_T
+buf_get ( file_id, page_id, flags, len )
+int file_id;
+int page_id;
+u_long flags;
+int *len; /* Number of bytes read into buffer */
+{
+ BUFHDR_T *bhp;
+ int bufid;
+ int fd;
+ int ndx;
+ int next_bufid;
+ int stat;
+ OBJ_T fobj;
+
+ ndx = BUF_HASH ( file_id, page_id );
+ fobj.file_id = (long) file_id;
+ fobj.obj_id = (long) page_id;
+ if ( GET_MASTER ) {
+ return(NULL);
+ }
+ /*
+ This could be a for loop, but we lose speed
+ by making all the cases general purpose so we
+ optimize for the no-collision case.
+ */
+ bufid = buf_hash_table[ndx];
+ if ( bufid < NUM_BUFS ) {
+ for ( bhp = bufhdr_table+bufid;
+ !OBJ_EQ (bhp->id, fobj) || !(bhp->flags & BUF_VALID);
+ bhp = LISTP_NEXTP ( bufhdr_table, hash, bhp ) ) {
+
+ if ( bhp->hash.next == bufid ) {
+ goto not_found;
+ }
+ }
+/* found */
+ if ( flags & BF_PIN ) {
+ bhp->flags |= BUF_PINNED;
+ bhp->refcount++;
+#ifdef PIN_DEBUG
+ fprintf(stderr, "buf_get: %X PINNED (%d)\n",
+ buf_table + (bhp-bufhdr_table), bhp->refcount);
+#endif
+ }
+ if ( flags & BF_DIRTY ) {
+ bhp->flags |= BUF_DIRTY;
+ }
+
+ while ( bhp->flags & BUF_IO_IN_PROGRESS ) {
+ /* MIS -- eventually err check here */
+#ifdef DEBUG
+ printf("About to sleep on %d (me: %d\n)\n", bhp->wait_proc,
+ my_txnp - txn_table);
+#endif
+#ifdef WAIT_STATS
+ buf_waits++;
+#endif
+ stat = proc_sleep_on ( &(bhp->wait_proc), buf_spinlock );
+ if ( stat ) {
+ /* Memory leak */
+ return(NULL);
+ }
+ if (!( bhp->flags & BUF_IO_IN_PROGRESS) &&
+ (!OBJ_EQ (bhp->id, fobj) || !(bhp->flags & BUF_VALID))) {
+ if (RELEASE_MASTER)
+ return(NULL);
+ return(buf_get ( file_id, page_id, flags, len ));
+ }
+ }
+ MAKE_MRU( bhp );
+ *len = BUFSIZE;
+ } else {
+not_found:
+ /* If you get here, the page isn't in the hash table */
+ bhp = bf_assign_buf ( ndx, &fobj, flags, len );
+ }
+ /* Common code between found and not found */
+
+ if ( bhp && bhp->flags & BUF_NEWPAGE ) {
+ *len = 0;
+ }
+ if (RELEASE_MASTER){
+ /* Memory leak */
+ return(NULL);
+ }
+ if ( bhp ) {
+ return ((ADDR_T)(buf_table+(bhp-bufhdr_table)));
+ } else {
+ return ( NULL );
+ }
+}
+
+/*
+ MIS - do I want to add file links to buffer pool?
+*/
+extern int
+buf_sync ( fid, close )
+int fid;
+int close; /* should we dec refcount and possibly
+ invalidate all the buffers */
+{
+ int i;
+ int fd;
+ int invalidate;
+ BUFHDR_T *bhp;
+
+ if ( (fd = bf_fid_to_fd ( fid )) < 0 ) {
+ return(1);
+ }
+ if (GET_MASTER) {
+ return(1);
+ }
+ invalidate = (buf_fids[fid].refcount == 1 && close);
+ if ( invalidate )
+ for ( bhp = bufhdr_table, i = 0; i < NUM_BUFS; bhp++, i++ ) {
+ if (bhp->id.file_id == fid) {
+ if ((bhp->flags & BF_DIRTY) && (bf_put_page( fd, bhp ) < 0)) {
+ return(1);
+ }
+ bhp->id.file_id = -1;
+ }
+ }
+ if (invalidate || close)
+ buf_fids[fid].refcount--;
+
+ if (RELEASE_MASTER) {
+ return(1);
+ }
+ return(0);
+
+
+}
+
+extern int
+buf_flags ( addr, set_flags, unset_flags )
+ADDR_T addr;
+u_long set_flags;
+u_long unset_flags;
+{
+ int bufid;
+ BUFHDR_T *bhp;
+
+#ifdef PIN_DEBUG
+ fprintf(stderr, "buf_flags: %X setting %s%s%s%s%s releasing %s%s%s%s%s\n",
+ addr,
+ set_flags&BUF_DIRTY ? "DIRTY " : "",
+ set_flags&BUF_VALID ? "VALID " : "",
+ set_flags&BUF_PINNED ? "PINNED " : "",
+ set_flags&BUF_IO_ERROR ? "IO_ERROR " : "",
+ set_flags&BUF_IO_IN_PROGRESS ? "IO_IN_PROG " : "",
+ set_flags&BUF_NEWPAGE ? "NEWPAGE " : "",
+ unset_flags&BUF_DIRTY ? "DIRTY " : "",
+ unset_flags&BUF_VALID ? "VALID " : "",
+ unset_flags&BUF_PINNED ? "PINNED " : "",
+ unset_flags&BUF_IO_ERROR ? "IO_ERROR " : "",
+ unset_flags&BUF_IO_IN_PROGRESS ? "IO_IN_PROG " : "",
+ unset_flags&BUF_NEWPAGE ? "NEWPAGE " : "" );
+#endif
+ if (!ADDR_OK(addr)) {
+ error_log1 ( "buf_pin: Invalid Buffer Address %x\n", addr );
+ return(1);
+ }
+ bufid = ((BUF_T *)addr) - buf_table;
+ assert ( bufid < NUM_BUFS);
+ bhp = &bufhdr_table[bufid];
+ if (GET_MASTER) {
+ return(1);
+ }
+ bhp->flags |= set_flags;
+ if ( set_flags & BUF_PINNED ) {
+ bhp->refcount++;
+ }
+ if ( set_flags & BUF_DIRTY ) {
+ unset_flags |= BUF_NEWPAGE;
+ }
+
+ if ( unset_flags & BUF_PINNED ) {
+ bhp->refcount--;
+ if ( bhp->refcount ) {
+ /* Turn off pin bit so it doesn't get unset */
+ unset_flags &= ~BUF_PINNED;
+ }
+ }
+ bhp->flags &= ~unset_flags;
+ MAKE_MRU(bhp);
+ if (RELEASE_MASTER) {
+ return(1);
+ }
+ return(0);
+}
+
+/*
+ Take a string name and produce an fid.
+
+ returns -1 on error
+
+ MIS -- this is a potential problem -- you keep actual names
+ here -- what if people run from different directories?
+*/
+extern int
+buf_name_lookup ( fname )
+char *fname;
+{
+ int i;
+ int fid;
+ int ndx;
+
+ fid = -1;
+ if (GET_MASTER) {
+ return(-1);
+ }
+ for ( i = 0; i < NUM_FILE_ENTRIES; i++ ) {
+ if ( buf_fids[i].offset == -1 ) {
+ fid = i;
+ } else {
+ if (!strcmp (fname, buf_strings+buf_fids[i].offset)) {
+ if (RELEASE_MASTER) {
+ return(-1);
+ }
+ buf_fids[i].refcount++;
+ return(i);
+ }
+ }
+ }
+ if ( fid == -1 ) {
+ error_log0 ( "No more file ID's\n" );
+ } else {
+ ndx = *buf_sp - strlen(fname) - 1;
+ if ( ndx < 0 ) {
+ error_log0 ( "Out of string space\n" );
+ fid = -1;
+ } else {
+ *buf_sp = ndx;
+ strcpy ( buf_strings+ndx, fname );
+ buf_fids[fid].offset = ndx;
+ }
+ buf_fids[fid].refcount = 1;
+ }
+ if (RELEASE_MASTER) {
+ return(-1);
+ }
+ return(fid);
+}
+
+static int
+bf_fid_to_fd ( fid )
+int fid;
+{
+ struct stat sbuf;
+
+ assert ( (fid < NUM_FILE_ENTRIES) && (buf_fids[fid].offset != -1) );
+ if ( fds[fid] != -1 ) {
+ return(fds[fid]);
+
+ }
+ fds[fid] = open ( buf_strings+buf_fids[fid].offset, O_RDWR|O_CREAT,
+ 0666 );
+ if ( fds[fid] < 0 ) {
+ error_log3 ( "Error Opening File %s FID: %d FD: %d. Errno = %d\n",
+ buf_strings+buf_fids[fid].offset, fid, fds[fid],
+ errno );
+ return(-1);
+ }
+ error_log3 ( "Opening File %s FID: %d FD: %d\n",
+ buf_strings+buf_fids[fid].offset, fid, fds[fid] );
+ if ( buf_fids[fid].npages == -1 ) {
+ /* Initialize the npages field */
+ if ( fstat ( fds[fid], &sbuf ) ) {
+ error_log3 ( "Error Fstating %s FID: %d. Errno = %d\n",
+ buf_strings+buf_fids[fid].offset, fid, errno );
+ } else {
+ buf_fids[fid].npages = ( sbuf.st_size / BUFSIZE );
+ }
+ }
+
+ return ( fds[fid] );
+}
+
+static int
+bf_put_page ( fd, bhp )
+int fd;
+BUFHDR_T *bhp;
+{
+ int nbytes;
+
+ assert ( (bhp-bufhdr_table) < NUM_BUFS );
+ if ( lseek ( fd, bhp->id.obj_id << BUFSHIFT, L_SET ) < 0 ) {
+ return(-1);
+ }
+ bhp->flags |= BUF_IO_IN_PROGRESS;
+ if (RELEASE_MASTER) {
+ return(-1);
+ }
+ nbytes = write(fd, buf_table[bhp-bufhdr_table], BUFSIZE);
+ if (GET_MASTER) {
+ return(-2);
+ }
+ if ( nbytes < 0 ) {
+ error_log1 ("Write failed with error code %d\n", errno);
+ return(-1);
+ } else if ( nbytes != BUFSIZE ) {
+ error_log1 ("Short write: %d bytes of %d\n", nbytes, BUFSIZE );
+ }
+ bhp->flags &= ~(BUF_DIRTY|BUF_IO_IN_PROGRESS);
+ return (0);
+}
+
+static BUFHDR_T *
+bf_assign_buf ( ndx, obj, flags, len )
+int ndx;
+OBJ_T *obj;
+u_long flags;
+int *len; /* Number of bytes read */
+{
+ BUFHDR_T *bhp;
+ int fd;
+
+ assert ( obj->file_id < NUM_FILE_ENTRIES );
+ bhp = bf_newbuf();
+ if ( !bhp ) {
+ return(NULL);
+ }
+ OBJ_ASSIGN ( (*obj), bhp->id );
+ if ( buf_hash_table[ndx] >= NUM_BUFS ) {
+ buf_hash_table[ndx] = bhp-bufhdr_table;
+ } else {
+ LISTPE_INSERT ( bufhdr_table, hash, bhp, buf_hash_table[ndx] );
+ }
+
+ bhp->flags |= BUF_VALID;
+ if ( flags & BF_PIN ) {
+ bhp->flags |= BUF_PINNED;
+ bhp->refcount++;
+#ifdef PIN_DEBUG
+ fprintf(stderr, "bf_assign_buf: %X PINNED (%d)\n",
+ buf_table + (bhp-bufhdr_table), bhp->refcount);
+#endif
+ }
+ fd = bf_fid_to_fd(obj->file_id);
+ if ( fd == -1 ) {
+ error_log1 ("Invalid fid %d\n", obj->file_id);
+ bhp->flags |= ~BUF_IO_ERROR;
+ return(NULL);
+ }
+ if ( obj->obj_id >= buf_fids[obj->file_id].npages) {
+ buf_fids[obj->file_id].npages = obj->obj_id+1;
+ *len = 0;
+ } else if ( flags & BF_EMPTY ) {
+ *len = 0;
+ } else {
+ bhp->flags |= BUF_IO_IN_PROGRESS;
+ if (RELEASE_MASTER) {
+ return(NULL);
+ }
+ if ( lseek ( fd, obj->obj_id << BUFSHIFT, L_SET ) < -1 ) {
+ error_log2 ("Unable to perform seek on file: %d to page %d",
+ obj->file_id, obj->obj_id );
+ bhp->flags &= ~BUF_IO_IN_PROGRESS;
+ bhp->flags |= ~BUF_IO_ERROR;
+ return(NULL);
+ }
+ *len = read(fd, buf_table[bhp-bufhdr_table], BUFSIZE);
+ if ( *len < 0 ) {
+ error_log2 ("Unable to perform read on file: %d to page %d",
+ obj->file_id, obj->obj_id );
+ bhp->flags &= ~BUF_IO_IN_PROGRESS;
+ bhp->flags |= ~BUF_IO_ERROR;
+ return(NULL);
+ }
+ if (GET_MASTER) {
+ return(NULL);
+ }
+ bhp->flags &= ~BUF_IO_IN_PROGRESS;
+ if ( bhp->wait_proc != -1 ) {
+ /* wake up waiter and anyone waiting on it */
+#ifdef DEBUG
+ printf("Waking transaction %d due to completed I/O\n",
+ bhp->wait_proc);
+#endif
+ proc_wake_id ( bhp->wait_proc );
+ bhp->wait_proc = -1;
+ }
+ MAKE_MRU(bhp);
+ }
+
+ if ( flags & BF_DIRTY ) {
+ bhp->flags |= BUF_DIRTY;
+ } else if ( *len < BUFSIZE ) {
+ bhp->flags |= BUF_NEWPAGE;
+ }
+ return ( bhp );
+}
+
+int
+buf_last ( fid )
+int fid;
+{
+ int val;
+
+ if (GET_MASTER) {
+ return(-1);
+ }
+ assert ( fid < NUM_FILE_ENTRIES );
+ if ( buf_fids[fid].npages == -1 ) {
+ /* initialize npages field */
+ (void) bf_fid_to_fd ( fid );
+ }
+ val = buf_fids[fid].npages;
+ if ( val ) {
+ val--; /* Convert to page number */
+ }
+ if (RELEASE_MASTER) {
+ return(-1);
+ }
+ return(val);
+}
+
+#ifdef DEBUG
+extern void
+buf_dump ( id, all )
+int id;
+int all;
+{
+ int i;
+ BUFHDR_T *bhp;
+
+ printf ( "LRU + %d\n", *buf_lru );
+ if ( all ) {
+ printf("ID\tFID\tPID\tLNEXT\tLPREV\tHNEXT\tHPREV\tSLEEP\tFLAG\tREFS\n");
+ for ( bhp = bufhdr_table, i = 0; i < NUM_BUFS; bhp++, i++ ) {
+ printf ( "%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%x\t%d\n", i,
+ bhp->id.file_id, bhp->id.obj_id,
+ bhp->lru.next, bhp->lru.prev,
+ bhp->hash.next, bhp->hash.prev,
+ bhp->wait_proc, bhp->flags, bhp->refcount );
+ }
+ } else {
+ if ( id >= NUM_BUFS ) {
+ printf ( "Buffer ID (%d) too high\n", id );
+ return;
+ }
+ bhp = bufhdr_table+id;
+ printf ( "%d\t%d\t%d\t%d\t%d\t%d\t%d\t%d\t%x\t%d\n", i,
+ bhp->id.file_id, bhp->id.obj_id,
+ bhp->lru.next, bhp->lru.prev,
+ bhp->hash.next, bhp->hash.prev,
+ bhp->wait_proc, bhp->flags, bhp->refcount );
+ }
+ return;
+}
+#endif
+
--- /dev/null
+../db/tags
\ No newline at end of file
--- /dev/null
+# @(#)Makefile.inc 8.1 (Berkeley) 6/4/93
+
+.PATH: ${.CURDIR}/db/recno
+
+SRCS+= rec_close.c rec_delete.c rec_get.c rec_open.c rec_put.c rec_search.c \
+ rec_seq.c rec_utils.c
--- /dev/null
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)extern.h 8.3 (Berkeley) 6/4/94
+ */
+
+#include "../btree/extern.h"
+
+int __rec_close __P((DB *));
+int __rec_delete __P((const DB *, const DBT *, u_int));
+int __rec_dleaf __P((BTREE *, PAGE *, u_int32_t));
+int __rec_fd __P((const DB *));
+int __rec_fmap __P((BTREE *, recno_t));
+int __rec_fout __P((BTREE *));
+int __rec_fpipe __P((BTREE *, recno_t));
+int __rec_get __P((const DB *, const DBT *, DBT *, u_int));
+int __rec_iput __P((BTREE *, recno_t, const DBT *, u_int));
+int __rec_put __P((const DB *dbp, DBT *, const DBT *, u_int));
+int __rec_ret __P((BTREE *, EPG *, recno_t, DBT *, DBT *));
+EPG *__rec_search __P((BTREE *, recno_t, enum SRCHOP));
+int __rec_seq __P((const DB *, DBT *, DBT *, u_int));
+int __rec_sync __P((const DB *, u_int));
+int __rec_vmap __P((BTREE *, recno_t));
+int __rec_vout __P((BTREE *));
+int __rec_vpipe __P((BTREE *, recno_t));
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)rec_close.c 8.6 (Berkeley) 8/18/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/uio.h>
+#include <sys/mman.h>
+
+#include <errno.h>
+#include <limits.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include <db.h>
+#include "recno.h"
+
+/*
+ * __REC_CLOSE -- Close a recno tree.
+ *
+ * Parameters:
+ * dbp: pointer to access method
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS
+ */
+int
+__rec_close(dbp)
+ DB *dbp;
+{
+ BTREE *t;
+ int status;
+
+ t = dbp->internal;
+
+ /* Toss any page pinned across calls. */
+ if (t->bt_pinned != NULL) {
+ mpool_put(t->bt_mp, t->bt_pinned, 0);
+ t->bt_pinned = NULL;
+ }
+
+ if (__rec_sync(dbp, 0) == RET_ERROR)
+ return (RET_ERROR);
+
+ /* Committed to closing. */
+ status = RET_SUCCESS;
+ if (F_ISSET(t, R_MEMMAPPED) && munmap(t->bt_smap, t->bt_msize))
+ status = RET_ERROR;
+
+ if (!F_ISSET(t, R_INMEM))
+ if (F_ISSET(t, R_CLOSEFP)) {
+ if (fclose(t->bt_rfp))
+ status = RET_ERROR;
+ } else
+ if (close(t->bt_rfd))
+ status = RET_ERROR;
+
+ if (__bt_close(dbp) == RET_ERROR)
+ status = RET_ERROR;
+
+ return (status);
+}
+
+/*
+ * __REC_SYNC -- sync the recno tree to disk.
+ *
+ * Parameters:
+ * dbp: pointer to access method
+ *
+ * Returns:
+ * RET_SUCCESS, RET_ERROR.
+ */
+int
+__rec_sync(dbp, flags)
+ const DB *dbp;
+ u_int flags;
+{
+ struct iovec iov[2];
+ BTREE *t;
+ DBT data, key;
+ off_t off;
+ recno_t scursor, trec;
+ int status;
+
+ t = dbp->internal;
+
+ /* Toss any page pinned across calls. */
+ if (t->bt_pinned != NULL) {
+ mpool_put(t->bt_mp, t->bt_pinned, 0);
+ t->bt_pinned = NULL;
+ }
+
+ if (flags == R_RECNOSYNC)
+ return (__bt_sync(dbp, 0));
+
+ if (F_ISSET(t, R_RDONLY | R_INMEM) || !F_ISSET(t, R_MODIFIED))
+ return (RET_SUCCESS);
+
+ /* Read any remaining records into the tree. */
+ if (!F_ISSET(t, R_EOF) && t->bt_irec(t, MAX_REC_NUMBER) == RET_ERROR)
+ return (RET_ERROR);
+
+ /* Rewind the file descriptor. */
+ if (lseek(t->bt_rfd, (off_t)0, SEEK_SET) != 0)
+ return (RET_ERROR);
+
+ /* Save the cursor. */
+ scursor = t->bt_cursor.rcursor;
+
+ key.size = sizeof(recno_t);
+ key.data = &trec;
+
+ if (F_ISSET(t, R_FIXLEN)) {
+ /*
+ * We assume that fixed length records are all fixed length.
+ * Any that aren't are either EINVAL'd or corrected by the
+ * record put code.
+ */
+ status = (dbp->seq)(dbp, &key, &data, R_FIRST);
+ while (status == RET_SUCCESS) {
+ if (write(t->bt_rfd, data.data, data.size) != data.size)
+ return (RET_ERROR);
+ status = (dbp->seq)(dbp, &key, &data, R_NEXT);
+ }
+ } else {
+ iov[1].iov_base = &t->bt_bval;
+ iov[1].iov_len = 1;
+
+ status = (dbp->seq)(dbp, &key, &data, R_FIRST);
+ while (status == RET_SUCCESS) {
+ iov[0].iov_base = data.data;
+ iov[0].iov_len = data.size;
+ if (writev(t->bt_rfd, iov, 2) != data.size + 1)
+ return (RET_ERROR);
+ status = (dbp->seq)(dbp, &key, &data, R_NEXT);
+ }
+ }
+
+ /* Restore the cursor. */
+ t->bt_cursor.rcursor = scursor;
+
+ if (status == RET_ERROR)
+ return (RET_ERROR);
+ if ((off = lseek(t->bt_rfd, (off_t)0, SEEK_CUR)) == -1)
+ return (RET_ERROR);
+ if (ftruncate(t->bt_rfd, off))
+ return (RET_ERROR);
+ F_CLR(t, R_MODIFIED);
+ return (RET_SUCCESS);
+}
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Mike Olson.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)rec_delete.c 8.7 (Berkeley) 7/14/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <db.h>
+#include "recno.h"
+
+static int rec_rdelete __P((BTREE *, recno_t));
+
+/*
+ * __REC_DELETE -- Delete the item(s) referenced by a key.
+ *
+ * Parameters:
+ * dbp: pointer to access method
+ * key: key to delete
+ * flags: R_CURSOR if deleting what the cursor references
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS and RET_SPECIAL if the key not found.
+ */
+int
+__rec_delete(dbp, key, flags)
+ const DB *dbp;
+ const DBT *key;
+ u_int flags;
+{
+ BTREE *t;
+ recno_t nrec;
+ int status;
+
+ t = dbp->internal;
+
+ /* Toss any page pinned across calls. */
+ if (t->bt_pinned != NULL) {
+ mpool_put(t->bt_mp, t->bt_pinned, 0);
+ t->bt_pinned = NULL;
+ }
+
+ switch(flags) {
+ case 0:
+ if ((nrec = *(recno_t *)key->data) == 0)
+ goto einval;
+ if (nrec > t->bt_nrecs)
+ return (RET_SPECIAL);
+ --nrec;
+ status = rec_rdelete(t, nrec);
+ break;
+ case R_CURSOR:
+ if (!F_ISSET(&t->bt_cursor, CURS_INIT))
+ goto einval;
+ if (t->bt_nrecs == 0)
+ return (RET_SPECIAL);
+ status = rec_rdelete(t, t->bt_cursor.rcursor - 1);
+ if (status == RET_SUCCESS)
+ --t->bt_cursor.rcursor;
+ break;
+ default:
+einval: errno = EINVAL;
+ return (RET_ERROR);
+ }
+
+ if (status == RET_SUCCESS)
+ F_SET(t, B_MODIFIED | R_MODIFIED);
+ return (status);
+}
+
+/*
+ * REC_RDELETE -- Delete the data matching the specified key.
+ *
+ * Parameters:
+ * tree: tree
+ * nrec: record to delete
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS and RET_SPECIAL if the key not found.
+ */
+static int
+rec_rdelete(t, nrec)
+ BTREE *t;
+ recno_t nrec;
+{
+ EPG *e;
+ PAGE *h;
+ int status;
+
+ /* Find the record; __rec_search pins the page. */
+ if ((e = __rec_search(t, nrec, SDELETE)) == NULL)
+ return (RET_ERROR);
+
+ /* Delete the record. */
+ h = e->page;
+ status = __rec_dleaf(t, h, e->index);
+ if (status != RET_SUCCESS) {
+ mpool_put(t->bt_mp, h, 0);
+ return (status);
+ }
+ mpool_put(t->bt_mp, h, MPOOL_DIRTY);
+ return (RET_SUCCESS);
+}
+
+/*
+ * __REC_DLEAF -- Delete a single record from a recno leaf page.
+ *
+ * Parameters:
+ * t: tree
+ * index: index on current page to delete
+ *
+ * Returns:
+ * RET_SUCCESS, RET_ERROR.
+ */
+int
+__rec_dleaf(t, h, index)
+ BTREE *t;
+ PAGE *h;
+ u_int32_t index;
+{
+ RLEAF *rl;
+ indx_t *ip, cnt, offset;
+ u_int32_t nbytes;
+ char *from;
+ void *to;
+
+ /*
+ * Delete a record from a recno leaf page. Internal records are never
+ * deleted from internal pages, regardless of the records that caused
+ * them to be added being deleted. Pages made empty by deletion are
+ * not reclaimed. They are, however, made available for reuse.
+ *
+ * Pack the remaining entries at the end of the page, shift the indices
+ * down, overwriting the deleted record and its index. If the record
+ * uses overflow pages, make them available for reuse.
+ */
+ to = rl = GETRLEAF(h, index);
+ if (rl->flags & P_BIGDATA && __ovfl_delete(t, rl->bytes) == RET_ERROR)
+ return (RET_ERROR);
+ nbytes = NRLEAF(rl);
+
+ /*
+ * Compress the key/data pairs. Compress and adjust the [BR]LEAF
+ * offsets. Reset the headers.
+ */
+ from = (char *)h + h->upper;
+ memmove(from + nbytes, from, (char *)to - from);
+ h->upper += nbytes;
+
+ offset = h->linp[index];
+ for (cnt = &h->linp[index] - (ip = &h->linp[0]); cnt--; ++ip)
+ if (ip[0] < offset)
+ ip[0] += nbytes;
+ for (cnt = &h->linp[NEXTINDEX(h)] - ip; --cnt; ++ip)
+ ip[0] = ip[1] < offset ? ip[1] + nbytes : ip[1];
+ h->lower -= sizeof(indx_t);
+ --t->bt_nrecs;
+ return (RET_SUCCESS);
+}
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)rec_get.c 8.9 (Berkeley) 8/18/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <db.h>
+#include "recno.h"
+
+/*
+ * __REC_GET -- Get a record from the btree.
+ *
+ * Parameters:
+ * dbp: pointer to access method
+ * key: key to find
+ * data: data to return
+ * flag: currently unused
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS and RET_SPECIAL if the key not found.
+ */
+int
+__rec_get(dbp, key, data, flags)
+ const DB *dbp;
+ const DBT *key;
+ DBT *data;
+ u_int flags;
+{
+ BTREE *t;
+ EPG *e;
+ recno_t nrec;
+ int status;
+
+ t = dbp->internal;
+
+ /* Toss any page pinned across calls. */
+ if (t->bt_pinned != NULL) {
+ mpool_put(t->bt_mp, t->bt_pinned, 0);
+ t->bt_pinned = NULL;
+ }
+
+ /* Get currently doesn't take any flags, and keys of 0 are illegal. */
+ if (flags || (nrec = *(recno_t *)key->data) == 0) {
+ errno = EINVAL;
+ return (RET_ERROR);
+ }
+
+ /*
+ * If we haven't seen this record yet, try to find it in the
+ * original file.
+ */
+ if (nrec > t->bt_nrecs) {
+ if (F_ISSET(t, R_EOF | R_INMEM))
+ return (RET_SPECIAL);
+ if ((status = t->bt_irec(t, nrec)) != RET_SUCCESS)
+ return (status);
+ }
+
+ --nrec;
+ if ((e = __rec_search(t, nrec, SEARCH)) == NULL)
+ return (RET_ERROR);
+
+ status = __rec_ret(t, e, 0, NULL, data);
+ if (F_ISSET(t, B_DB_LOCK))
+ mpool_put(t->bt_mp, e->page, 0);
+ else
+ t->bt_pinned = e->page;
+ return (status);
+}
+
+/*
+ * __REC_FPIPE -- Get fixed length records from a pipe.
+ *
+ * Parameters:
+ * t: tree
+ * cnt: records to read
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS
+ */
+int
+__rec_fpipe(t, top)
+ BTREE *t;
+ recno_t top;
+{
+ DBT data;
+ recno_t nrec;
+ size_t len;
+ int ch;
+ u_char *p;
+
+ if (t->bt_rdata.size < t->bt_reclen) {
+ t->bt_rdata.data = t->bt_rdata.data == NULL ?
+ malloc(t->bt_reclen) :
+ realloc(t->bt_rdata.data, t->bt_reclen);
+ if (t->bt_rdata.data == NULL)
+ return (RET_ERROR);
+ t->bt_rdata.size = t->bt_reclen;
+ }
+ data.data = t->bt_rdata.data;
+ data.size = t->bt_reclen;
+
+ for (nrec = t->bt_nrecs; nrec < top;) {
+ len = t->bt_reclen;
+ for (p = t->bt_rdata.data;; *p++ = ch)
+ if ((ch = getc(t->bt_rfp)) == EOF || !--len) {
+ if (ch != EOF)
+ *p = ch;
+ if (len != 0)
+ memset(p, t->bt_bval, len);
+ if (__rec_iput(t,
+ nrec, &data, 0) != RET_SUCCESS)
+ return (RET_ERROR);
+ ++nrec;
+ break;
+ }
+ if (ch == EOF)
+ break;
+ }
+ if (nrec < top) {
+ F_SET(t, R_EOF);
+ return (RET_SPECIAL);
+ }
+ return (RET_SUCCESS);
+}
+
+/*
+ * __REC_VPIPE -- Get variable length records from a pipe.
+ *
+ * Parameters:
+ * t: tree
+ * cnt: records to read
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS
+ */
+int
+__rec_vpipe(t, top)
+ BTREE *t;
+ recno_t top;
+{
+ DBT data;
+ recno_t nrec;
+ indx_t len;
+ size_t sz;
+ int bval, ch;
+ u_char *p;
+
+ bval = t->bt_bval;
+ for (nrec = t->bt_nrecs; nrec < top; ++nrec) {
+ for (p = t->bt_rdata.data,
+ sz = t->bt_rdata.size;; *p++ = ch, --sz) {
+ if ((ch = getc(t->bt_rfp)) == EOF || ch == bval) {
+ data.data = t->bt_rdata.data;
+ data.size = p - (u_char *)t->bt_rdata.data;
+ if (ch == EOF && data.size == 0)
+ break;
+ if (__rec_iput(t, nrec, &data, 0)
+ != RET_SUCCESS)
+ return (RET_ERROR);
+ break;
+ }
+ if (sz == 0) {
+ len = p - (u_char *)t->bt_rdata.data;
+ t->bt_rdata.size += (sz = 256);
+ t->bt_rdata.data = t->bt_rdata.data == NULL ?
+ malloc(t->bt_rdata.size) :
+ realloc(t->bt_rdata.data, t->bt_rdata.size);
+ if (t->bt_rdata.data == NULL)
+ return (RET_ERROR);
+ p = (u_char *)t->bt_rdata.data + len;
+ }
+ }
+ if (ch == EOF)
+ break;
+ }
+ if (nrec < top) {
+ F_SET(t, R_EOF);
+ return (RET_SPECIAL);
+ }
+ return (RET_SUCCESS);
+}
+
+/*
+ * __REC_FMAP -- Get fixed length records from a file.
+ *
+ * Parameters:
+ * t: tree
+ * cnt: records to read
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS
+ */
+int
+__rec_fmap(t, top)
+ BTREE *t;
+ recno_t top;
+{
+ DBT data;
+ recno_t nrec;
+ u_char *sp, *ep, *p;
+ size_t len;
+
+ if (t->bt_rdata.size < t->bt_reclen) {
+ t->bt_rdata.data = t->bt_rdata.data == NULL ?
+ malloc(t->bt_reclen) :
+ realloc(t->bt_rdata.data, t->bt_reclen);
+ if (t->bt_rdata.data == NULL)
+ return (RET_ERROR);
+ t->bt_rdata.size = t->bt_reclen;
+ }
+ data.data = t->bt_rdata.data;
+ data.size = t->bt_reclen;
+
+ sp = (u_char *)t->bt_cmap;
+ ep = (u_char *)t->bt_emap;
+ for (nrec = t->bt_nrecs; nrec < top; ++nrec) {
+ if (sp >= ep) {
+ F_SET(t, R_EOF);
+ return (RET_SPECIAL);
+ }
+ len = t->bt_reclen;
+ for (p = t->bt_rdata.data;
+ sp < ep && len > 0; *p++ = *sp++, --len);
+ if (len != 0)
+ memset(p, t->bt_bval, len);
+ if (__rec_iput(t, nrec, &data, 0) != RET_SUCCESS)
+ return (RET_ERROR);
+ }
+ t->bt_cmap = (caddr_t)sp;
+ return (RET_SUCCESS);
+}
+
+/*
+ * __REC_VMAP -- Get variable length records from a file.
+ *
+ * Parameters:
+ * t: tree
+ * cnt: records to read
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS
+ */
+int
+__rec_vmap(t, top)
+ BTREE *t;
+ recno_t top;
+{
+ DBT data;
+ u_char *sp, *ep;
+ recno_t nrec;
+ int bval;
+
+ sp = (u_char *)t->bt_cmap;
+ ep = (u_char *)t->bt_emap;
+ bval = t->bt_bval;
+
+ for (nrec = t->bt_nrecs; nrec < top; ++nrec) {
+ if (sp >= ep) {
+ F_SET(t, R_EOF);
+ return (RET_SPECIAL);
+ }
+ for (data.data = sp; sp < ep && *sp != bval; ++sp);
+ data.size = sp - (u_char *)data.data;
+ if (__rec_iput(t, nrec, &data, 0) != RET_SUCCESS)
+ return (RET_ERROR);
+ ++sp;
+ }
+ t->bt_cmap = (caddr_t)sp;
+ return (RET_SUCCESS);
+}
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Mike Olson.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)rec_open.c 8.10 (Berkeley) 9/1/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+#include <sys/mman.h>
+#include <sys/stat.h>
+
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <stddef.h>
+#include <stdio.h>
+#include <unistd.h>
+
+#include <db.h>
+#include "recno.h"
+
+DB *
+__rec_open(fname, flags, mode, openinfo, dflags)
+ const char *fname;
+ int flags, mode, dflags;
+ const RECNOINFO *openinfo;
+{
+ BTREE *t;
+ BTREEINFO btopeninfo;
+ DB *dbp;
+ PAGE *h;
+ struct stat sb;
+ int rfd, sverrno;
+
+ /* Open the user's file -- if this fails, we're done. */
+ if (fname != NULL && (rfd = open(fname, flags, mode)) < 0)
+ return (NULL);
+
+ /* Create a btree in memory (backed by disk). */
+ dbp = NULL;
+ if (openinfo) {
+ if (openinfo->flags & ~(R_FIXEDLEN | R_NOKEY | R_SNAPSHOT))
+ goto einval;
+ btopeninfo.flags = 0;
+ btopeninfo.cachesize = openinfo->cachesize;
+ btopeninfo.maxkeypage = 0;
+ btopeninfo.minkeypage = 0;
+ btopeninfo.psize = openinfo->psize;
+ btopeninfo.compare = NULL;
+ btopeninfo.prefix = NULL;
+ btopeninfo.lorder = openinfo->lorder;
+ dbp = __bt_open(openinfo->bfname,
+ O_RDWR, S_IRUSR | S_IWUSR, &btopeninfo, dflags);
+ } else
+ dbp = __bt_open(NULL, O_RDWR, S_IRUSR | S_IWUSR, NULL, dflags);
+ if (dbp == NULL)
+ goto err;
+
+ /*
+ * Some fields in the tree structure are recno specific. Fill them
+ * in and make the btree structure look like a recno structure. We
+ * don't change the bt_ovflsize value, it's close enough and slightly
+ * bigger.
+ */
+ t = dbp->internal;
+ if (openinfo) {
+ if (openinfo->flags & R_FIXEDLEN) {
+ F_SET(t, R_FIXLEN);
+ t->bt_reclen = openinfo->reclen;
+ if (t->bt_reclen == 0)
+ goto einval;
+ }
+ t->bt_bval = openinfo->bval;
+ } else
+ t->bt_bval = '\n';
+
+ F_SET(t, R_RECNO);
+ if (fname == NULL)
+ F_SET(t, R_EOF | R_INMEM);
+ else
+ t->bt_rfd = rfd;
+
+ if (fname != NULL) {
+ /*
+ * In 4.4BSD, stat(2) returns true for ISSOCK on pipes.
+ * Unfortunately, that's not portable, so we use lseek
+ * and check the errno values.
+ */
+ errno = 0;
+ if (lseek(rfd, (off_t)0, SEEK_CUR) == -1 && errno == ESPIPE) {
+ switch (flags & O_ACCMODE) {
+ case O_RDONLY:
+ F_SET(t, R_RDONLY);
+ break;
+ default:
+ goto einval;
+ }
+slow: if ((t->bt_rfp = fdopen(rfd, "r")) == NULL)
+ goto err;
+ F_SET(t, R_CLOSEFP);
+ t->bt_irec =
+ F_ISSET(t, R_FIXLEN) ? __rec_fpipe : __rec_vpipe;
+ } else {
+ switch (flags & O_ACCMODE) {
+ case O_RDONLY:
+ F_SET(t, R_RDONLY);
+ break;
+ case O_RDWR:
+ break;
+ default:
+ goto einval;
+ }
+
+ if (fstat(rfd, &sb))
+ goto err;
+ /*
+ * Kluge -- we'd like to test to see if the file is too
+ * big to mmap. Since, we don't know what size or type
+ * off_t's or size_t's are, what the largest unsigned
+ * integral type is, or what random insanity the local
+ * C compiler will perpetrate, doing the comparison in
+ * a portable way is flatly impossible. Hope that mmap
+ * fails if the file is too large.
+ */
+ if (sb.st_size == 0)
+ F_SET(t, R_EOF);
+ else {
+#ifdef MMAP_NOT_AVAILABLE
+ /*
+ * XXX
+ * Mmap doesn't work correctly on many current
+ * systems. In particular, it can fail subtly,
+ * with cache coherency problems. Don't use it
+ * for now.
+ */
+ t->bt_msize = sb.st_size;
+ if ((t->bt_smap = mmap(NULL, t->bt_msize,
+ PROT_READ, MAP_PRIVATE, rfd,
+ (off_t)0)) == (caddr_t)-1)
+ goto slow;
+ t->bt_cmap = t->bt_smap;
+ t->bt_emap = t->bt_smap + sb.st_size;
+ t->bt_irec = F_ISSET(t, R_FIXLEN) ?
+ __rec_fmap : __rec_vmap;
+ F_SET(t, R_MEMMAPPED);
+#else
+ goto slow;
+#endif
+ }
+ }
+ }
+
+ /* Use the recno routines. */
+ dbp->close = __rec_close;
+ dbp->del = __rec_delete;
+ dbp->fd = __rec_fd;
+ dbp->get = __rec_get;
+ dbp->put = __rec_put;
+ dbp->seq = __rec_seq;
+ dbp->sync = __rec_sync;
+
+ /* If the root page was created, reset the flags. */
+ if ((h = mpool_get(t->bt_mp, P_ROOT, 0)) == NULL)
+ goto err;
+ if ((h->flags & P_TYPE) == P_BLEAF) {
+ F_CLR(h, P_TYPE);
+ F_SET(h, P_RLEAF);
+ mpool_put(t->bt_mp, h, MPOOL_DIRTY);
+ } else
+ mpool_put(t->bt_mp, h, 0);
+
+ if (openinfo && openinfo->flags & R_SNAPSHOT &&
+ !F_ISSET(t, R_EOF | R_INMEM) &&
+ t->bt_irec(t, MAX_REC_NUMBER) == RET_ERROR)
+ goto err;
+ return (dbp);
+
+einval: errno = EINVAL;
+err: sverrno = errno;
+ if (dbp != NULL)
+ (void)__bt_close(dbp);
+ if (fname != NULL)
+ (void)close(rfd);
+ errno = sverrno;
+ return (NULL);
+}
+
+int
+__rec_fd(dbp)
+ const DB *dbp;
+{
+ BTREE *t;
+
+ t = dbp->internal;
+
+ /* Toss any page pinned across calls. */
+ if (t->bt_pinned != NULL) {
+ mpool_put(t->bt_mp, t->bt_pinned, 0);
+ t->bt_pinned = NULL;
+ }
+
+ /* In-memory database can't have a file descriptor. */
+ if (F_ISSET(t, R_INMEM)) {
+ errno = ENOENT;
+ return (-1);
+ }
+ return (t->bt_rfd);
+}
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)rec_put.c 8.7 (Berkeley) 8/18/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <db.h>
+#include "recno.h"
+
+/*
+ * __REC_PUT -- Add a recno item to the tree.
+ *
+ * Parameters:
+ * dbp: pointer to access method
+ * key: key
+ * data: data
+ * flag: R_CURSOR, R_IAFTER, R_IBEFORE, R_NOOVERWRITE
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS and RET_SPECIAL if the key is
+ * already in the tree and R_NOOVERWRITE specified.
+ */
+int
+__rec_put(dbp, key, data, flags)
+ const DB *dbp;
+ DBT *key;
+ const DBT *data;
+ u_int flags;
+{
+ BTREE *t;
+ DBT fdata, tdata;
+ recno_t nrec;
+ int status;
+
+ t = dbp->internal;
+
+ /* Toss any page pinned across calls. */
+ if (t->bt_pinned != NULL) {
+ mpool_put(t->bt_mp, t->bt_pinned, 0);
+ t->bt_pinned = NULL;
+ }
+
+ /*
+ * If using fixed-length records, and the record is long, return
+ * EINVAL. If it's short, pad it out. Use the record data return
+ * memory, it's only short-term.
+ */
+ if (F_ISSET(t, R_FIXLEN) && data->size != t->bt_reclen) {
+ if (data->size > t->bt_reclen)
+ goto einval;
+
+ if (t->bt_rdata.size < t->bt_reclen) {
+ t->bt_rdata.data = t->bt_rdata.data == NULL ?
+ malloc(t->bt_reclen) :
+ realloc(t->bt_rdata.data, t->bt_reclen);
+ if (t->bt_rdata.data == NULL)
+ return (RET_ERROR);
+ t->bt_rdata.size = t->bt_reclen;
+ }
+ memmove(t->bt_rdata.data, data->data, data->size);
+ memset((char *)t->bt_rdata.data + data->size,
+ t->bt_bval, t->bt_reclen - data->size);
+ fdata.data = t->bt_rdata.data;
+ fdata.size = t->bt_reclen;
+ } else {
+ fdata.data = data->data;
+ fdata.size = data->size;
+ }
+
+ switch (flags) {
+ case R_CURSOR:
+ if (!F_ISSET(&t->bt_cursor, CURS_INIT))
+ goto einval;
+ nrec = t->bt_cursor.rcursor;
+ break;
+ case R_SETCURSOR:
+ if ((nrec = *(recno_t *)key->data) == 0)
+ goto einval;
+ break;
+ case R_IAFTER:
+ if ((nrec = *(recno_t *)key->data) == 0) {
+ nrec = 1;
+ flags = R_IBEFORE;
+ }
+ break;
+ case 0:
+ case R_IBEFORE:
+ if ((nrec = *(recno_t *)key->data) == 0)
+ goto einval;
+ break;
+ case R_NOOVERWRITE:
+ if ((nrec = *(recno_t *)key->data) == 0)
+ goto einval;
+ if (nrec <= t->bt_nrecs)
+ return (RET_SPECIAL);
+ break;
+ default:
+einval: errno = EINVAL;
+ return (RET_ERROR);
+ }
+
+ /*
+ * Make sure that records up to and including the put record are
+ * already in the database. If skipping records, create empty ones.
+ */
+ if (nrec > t->bt_nrecs) {
+ if (!F_ISSET(t, R_EOF | R_INMEM) &&
+ t->bt_irec(t, nrec) == RET_ERROR)
+ return (RET_ERROR);
+ if (nrec > t->bt_nrecs + 1) {
+ if (F_ISSET(t, R_FIXLEN)) {
+ if ((tdata.data =
+ (void *)malloc(t->bt_reclen)) == NULL)
+ return (RET_ERROR);
+ tdata.size = t->bt_reclen;
+ memset(tdata.data, t->bt_bval, tdata.size);
+ } else {
+ tdata.data = NULL;
+ tdata.size = 0;
+ }
+ while (nrec > t->bt_nrecs + 1)
+ if (__rec_iput(t,
+ t->bt_nrecs, &tdata, 0) != RET_SUCCESS)
+ return (RET_ERROR);
+ if (F_ISSET(t, R_FIXLEN))
+ free(tdata.data);
+ }
+ }
+
+ if ((status = __rec_iput(t, nrec - 1, &fdata, flags)) != RET_SUCCESS)
+ return (status);
+
+ if (flags == R_SETCURSOR)
+ t->bt_cursor.rcursor = nrec;
+
+ F_SET(t, R_MODIFIED);
+ return (__rec_ret(t, NULL, nrec, key, NULL));
+}
+
+/*
+ * __REC_IPUT -- Add a recno item to the tree.
+ *
+ * Parameters:
+ * t: tree
+ * nrec: record number
+ * data: data
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS
+ */
+int
+__rec_iput(t, nrec, data, flags)
+ BTREE *t;
+ recno_t nrec;
+ const DBT *data;
+ u_int flags;
+{
+ DBT tdata;
+ EPG *e;
+ PAGE *h;
+ indx_t index, nxtindex;
+ pgno_t pg;
+ u_int32_t nbytes;
+ int dflags, status;
+ char *dest, db[NOVFLSIZE];
+
+ /*
+ * If the data won't fit on a page, store it on indirect pages.
+ *
+ * XXX
+ * If the insert fails later on, these pages aren't recovered.
+ */
+ if (data->size > t->bt_ovflsize) {
+ if (__ovfl_put(t, data, &pg) == RET_ERROR)
+ return (RET_ERROR);
+ tdata.data = db;
+ tdata.size = NOVFLSIZE;
+ *(pgno_t *)db = pg;
+ *(u_int32_t *)(db + sizeof(pgno_t)) = data->size;
+ dflags = P_BIGDATA;
+ data = &tdata;
+ } else
+ dflags = 0;
+
+ /* __rec_search pins the returned page. */
+ if ((e = __rec_search(t, nrec,
+ nrec > t->bt_nrecs || flags == R_IAFTER || flags == R_IBEFORE ?
+ SINSERT : SEARCH)) == NULL)
+ return (RET_ERROR);
+
+ h = e->page;
+ index = e->index;
+
+ /*
+ * Add the specified key/data pair to the tree. The R_IAFTER and
+ * R_IBEFORE flags insert the key after/before the specified key.
+ *
+ * Pages are split as required.
+ */
+ switch (flags) {
+ case R_IAFTER:
+ ++index;
+ break;
+ case R_IBEFORE:
+ break;
+ default:
+ if (nrec < t->bt_nrecs &&
+ __rec_dleaf(t, h, index) == RET_ERROR) {
+ mpool_put(t->bt_mp, h, 0);
+ return (RET_ERROR);
+ }
+ break;
+ }
+
+ /*
+ * If not enough room, split the page. The split code will insert
+ * the key and data and unpin the current page. If inserting into
+ * the offset array, shift the pointers up.
+ */
+ nbytes = NRLEAFDBT(data->size);
+ if (h->upper - h->lower < nbytes + sizeof(indx_t)) {
+ status = __bt_split(t, h, NULL, data, dflags, nbytes, index);
+ if (status == RET_SUCCESS)
+ ++t->bt_nrecs;
+ return (status);
+ }
+
+ if (index < (nxtindex = NEXTINDEX(h)))
+ memmove(h->linp + index + 1, h->linp + index,
+ (nxtindex - index) * sizeof(indx_t));
+ h->lower += sizeof(indx_t);
+
+ h->linp[index] = h->upper -= nbytes;
+ dest = (char *)h + h->upper;
+ WR_RLEAF(dest, data, dflags);
+
+ ++t->bt_nrecs;
+ F_SET(t, B_MODIFIED);
+ mpool_put(t->bt_mp, h, MPOOL_DIRTY);
+
+ return (RET_SUCCESS);
+}
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)rec_search.c 8.4 (Berkeley) 7/14/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <stdio.h>
+
+#include <db.h>
+#include "recno.h"
+
+/*
+ * __REC_SEARCH -- Search a btree for a key.
+ *
+ * Parameters:
+ * t: tree to search
+ * recno: key to find
+ * op: search operation
+ *
+ * Returns:
+ * EPG for matching record, if any, or the EPG for the location of the
+ * key, if it were inserted into the tree.
+ *
+ * Returns:
+ * The EPG for matching record, if any, or the EPG for the location
+ * of the key, if it were inserted into the tree, is entered into
+ * the bt_cur field of the tree. A pointer to the field is returned.
+ */
+EPG *
+__rec_search(t, recno, op)
+ BTREE *t;
+ recno_t recno;
+ enum SRCHOP op;
+{
+ register indx_t index;
+ register PAGE *h;
+ EPGNO *parent;
+ RINTERNAL *r;
+ pgno_t pg;
+ indx_t top;
+ recno_t total;
+ int sverrno;
+
+ BT_CLR(t);
+ for (pg = P_ROOT, total = 0;;) {
+ if ((h = mpool_get(t->bt_mp, pg, 0)) == NULL)
+ goto err;
+ if (h->flags & P_RLEAF) {
+ t->bt_cur.page = h;
+ t->bt_cur.index = recno - total;
+ return (&t->bt_cur);
+ }
+ for (index = 0, top = NEXTINDEX(h);;) {
+ r = GETRINTERNAL(h, index);
+ if (++index == top || total + r->nrecs > recno)
+ break;
+ total += r->nrecs;
+ }
+
+ BT_PUSH(t, pg, index - 1);
+
+ pg = r->pgno;
+ switch (op) {
+ case SDELETE:
+ --GETRINTERNAL(h, (index - 1))->nrecs;
+ mpool_put(t->bt_mp, h, MPOOL_DIRTY);
+ break;
+ case SINSERT:
+ ++GETRINTERNAL(h, (index - 1))->nrecs;
+ mpool_put(t->bt_mp, h, MPOOL_DIRTY);
+ break;
+ case SEARCH:
+ mpool_put(t->bt_mp, h, 0);
+ break;
+ }
+
+ }
+ /* Try and recover the tree. */
+err: sverrno = errno;
+ if (op != SEARCH)
+ while ((parent = BT_POP(t)) != NULL) {
+ if ((h = mpool_get(t->bt_mp, parent->pgno, 0)) == NULL)
+ break;
+ if (op == SINSERT)
+ --GETRINTERNAL(h, parent->index)->nrecs;
+ else
+ ++GETRINTERNAL(h, parent->index)->nrecs;
+ mpool_put(t->bt_mp, h, MPOOL_DIRTY);
+ }
+ errno = sverrno;
+ return (NULL);
+}
--- /dev/null
+/*-
+ * Copyright (c) 1991, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)rec_seq.c 8.3 (Berkeley) 7/14/94";
+#endif /* not lint */
+
+#include <sys/types.h>
+
+#include <errno.h>
+#include <limits.h>
+#include <stdio.h>
+#include <string.h>
+
+#include <db.h>
+#include "recno.h"
+
+/*
+ * __REC_SEQ -- Recno sequential scan interface.
+ *
+ * Parameters:
+ * dbp: pointer to access method
+ * key: key for positioning and return value
+ * data: data return value
+ * flags: R_CURSOR, R_FIRST, R_LAST, R_NEXT, R_PREV.
+ *
+ * Returns:
+ * RET_ERROR, RET_SUCCESS or RET_SPECIAL if there's no next key.
+ */
+int
+__rec_seq(dbp, key, data, flags)
+ const DB *dbp;
+ DBT *key, *data;
+ u_int flags;
+{
+ BTREE *t;
+ EPG *e;
+ recno_t nrec;
+ int status;
+
+ t = dbp->internal;
+
+ /* Toss any page pinned across calls. */
+ if (t->bt_pinned != NULL) {
+ mpool_put(t->bt_mp, t->bt_pinned, 0);
+ t->bt_pinned = NULL;
+ }
+
+ switch(flags) {
+ case R_CURSOR:
+ if ((nrec = *(recno_t *)key->data) == 0)
+ goto einval;
+ break;
+ case R_NEXT:
+ if (F_ISSET(&t->bt_cursor, CURS_INIT)) {
+ nrec = t->bt_cursor.rcursor + 1;
+ break;
+ }
+ /* FALLTHROUGH */
+ case R_FIRST:
+ nrec = 1;
+ break;
+ case R_PREV:
+ if (F_ISSET(&t->bt_cursor, CURS_INIT)) {
+ if ((nrec = t->bt_cursor.rcursor - 1) == 0)
+ return (RET_SPECIAL);
+ break;
+ }
+ /* FALLTHROUGH */
+ case R_LAST:
+ if (!F_ISSET(t, R_EOF | R_INMEM) &&
+ t->bt_irec(t, MAX_REC_NUMBER) == RET_ERROR)
+ return (RET_ERROR);
+ nrec = t->bt_nrecs;
+ break;
+ default:
+einval: errno = EINVAL;
+ return (RET_ERROR);
+ }
+
+ if (t->bt_nrecs == 0 || nrec > t->bt_nrecs) {
+ if (!F_ISSET(t, R_EOF | R_INMEM) &&
+ (status = t->bt_irec(t, nrec)) != RET_SUCCESS)
+ return (status);
+ if (t->bt_nrecs == 0 || nrec > t->bt_nrecs)
+ return (RET_SPECIAL);
+ }
+
+ if ((e = __rec_search(t, nrec - 1, SEARCH)) == NULL)
+ return (RET_ERROR);
+
+ F_SET(&t->bt_cursor, CURS_INIT);
+ t->bt_cursor.rcursor = nrec;
+
+ status = __rec_ret(t, e, nrec, key, data);
+ if (F_ISSET(t, B_DB_LOCK))
+ mpool_put(t->bt_mp, e->page, 0);
+ else
+ t->bt_pinned = e->page;
+ return (status);
+}
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)rec_utils.c 8.6 (Berkeley) 7/16/94";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <db.h>
+#include "recno.h"
+
+/*
+ * __rec_ret --
+ * Build return data.
+ *
+ * Parameters:
+ * t: tree
+ * e: key/data pair to be returned
+ * nrec: record number
+ * key: user's key structure
+ * data: user's data structure
+ *
+ * Returns:
+ * RET_SUCCESS, RET_ERROR.
+ */
+int
+__rec_ret(t, e, nrec, key, data)
+ BTREE *t;
+ EPG *e;
+ recno_t nrec;
+ DBT *key, *data;
+{
+ RLEAF *rl;
+ void *p;
+
+ if (key == NULL)
+ goto dataonly;
+
+ /* We have to copy the key, it's not on the page. */
+ if (sizeof(recno_t) > t->bt_rkey.size) {
+ p = (void *)(t->bt_rkey.data == NULL ?
+ malloc(sizeof(recno_t)) :
+ realloc(t->bt_rkey.data, sizeof(recno_t)));
+ if (p == NULL)
+ return (RET_ERROR);
+ t->bt_rkey.data = p;
+ t->bt_rkey.size = sizeof(recno_t);
+ }
+ memmove(t->bt_rkey.data, &nrec, sizeof(recno_t));
+ key->size = sizeof(recno_t);
+ key->data = t->bt_rkey.data;
+
+dataonly:
+ if (data == NULL)
+ return (RET_SUCCESS);
+
+ /*
+ * We must copy big keys/data to make them contigous. Otherwise,
+ * leave the page pinned and don't copy unless the user specified
+ * concurrent access.
+ */
+ rl = GETRLEAF(e->page, e->index);
+ if (rl->flags & P_BIGDATA) {
+ if (__ovfl_get(t, rl->bytes,
+ &data->size, &t->bt_rdata.data, &t->bt_rdata.size))
+ return (RET_ERROR);
+ data->data = t->bt_rdata.data;
+ } else if (F_ISSET(t, B_DB_LOCK)) {
+ /* Use +1 in case the first record retrieved is 0 length. */
+ if (rl->dsize + 1 > t->bt_rdata.size) {
+ p = (void *)(t->bt_rdata.data == NULL ?
+ malloc(rl->dsize + 1) :
+ realloc(t->bt_rdata.data, rl->dsize + 1));
+ if (p == NULL)
+ return (RET_ERROR);
+ t->bt_rdata.data = p;
+ t->bt_rdata.size = rl->dsize + 1;
+ }
+ memmove(t->bt_rdata.data, rl->bytes, rl->dsize);
+ data->size = rl->dsize;
+ data->data = t->bt_rdata.data;
+ } else {
+ data->size = rl->dsize;
+ data->data = rl->bytes;
+ }
+ return (RET_SUCCESS);
+}
--- /dev/null
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @(#)recno.h 8.1 (Berkeley) 6/4/93
+ */
+
+enum SRCHOP { SDELETE, SINSERT, SEARCH}; /* Rec_search operation. */
+
+#include "../btree/btree.h"
+#include "extern.h"
--- /dev/null
+../db/tags
\ No newline at end of file
--- /dev/null
+# @(#)Makefile 8.15 (Berkeley) 7/28/94
+
+PROG= dbtest
+OBJS= dbtest.o strerror.o
+
+# Uncomment the STAT line get hash and btree statistical use info. This
+# also forces ld to load the btree debug functions for use by gdb, which
+# is useful. The db library has to be compiled with -DSTATISTICS as well.
+INC= -I${PORTDIR}/include -I${PORTDIR}
+OORG= -g
+#STAT= -DSTATISTICS
+CFLAGS= -D__DBINTERFACE_PRIVATE -DDEBUG ${STAT} ${OORG} ${INC}
+
+dbtest: ${OBJS} ${PORTDIR}/libdb.a
+ ${CC} -o $@ ${OBJS} ${PORTDIR}/libdb.a
+
+strerror.o: ${PORTDIR}/clib/strerror.c
+ ${CC} -c ${PORTDIR}/clib/strerror.c
+
+clean:
+ rm -f dbtest.core gmon.out ${OBJS} ${PROG} t1 t2 t3
+
+${OBJS}: Makefile
--- /dev/null
+# @(#)README 8.8 (Berkeley) 7/31/94
+
+To build this portably, try something like:
+
+ make PORTDIR="../PORT/MACH"
+
+where MACH is the machine, i.e. "sunos.4.1.1".
+
+To run the tests, enter "sh run.test". If your system dictionary isn't
+in /usr/share/dict/words, edit run.test to reflect the correct place.
+
+Fairly large files (the command files) are built in this directory during
+the test runs, and even larger files (the database files) are created in
+"/var/tmp". If the latter directory doesn't exist, set the environmental
+variable TMPDIR to a directory where the files can be built.
+
+=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
+The script file consists of lines with an initial character which is
+the command for that line, or an initial character indicating a key
+or data entry for a previous command.
+
+Legal command characters are as follows:
+
+c: compare a record
+ + must be followed by [kK][dD]; the data value in the database
+ associated with the specified key is compared to the specified
+ data value.
+e: echo a string
+ + writes out the rest of the line into the output file; if the
+ last character is not a carriage-return, a newline is appended.
+f: set the flags for the next command
+ + no value zero's the flags
+g: do a get command
+ + must be followed by [kK]
+ + writes out the retrieved data DBT.
+o [r]: dump [reverse]
+ + dump the database out, if 'r' is set, in reverse order.
+p: do a put command
+ + must be followed by [kK][dD]
+r: do a del command
+ + must be followed by [kK] unless R_CURSOR flag set.
+S: sync the database
+s: do a seq command
+ + must be followed by [kK] if R_CURSOR flag set.
+ + writes out the retrieved data DBT.
+
+Legal key/data characters are as follows:
+
+D [file]: data file
+ + set the current data value to the contents of the file
+d [data]:
+ + set the current key value to the contents of the line.
+K [file]: key file
+ + set the current key value to the contents of the file
+k [data]:
+ + set the current key value to the contents of the line.
+
+Blank lines, lines with leading white space, and lines with leading
+hash marks (#) are ignored.
+
+Options to dbtest are as follows:
+
+ -d: Set the DB_LOCK flag.
+ -f: Use the file argument as the database file.
+ -i: Use the rest of the argument to set elements in the info
+ structure. If the type is btree, then "-i cachesize=10240"
+ will set BTREEINFO.cachesize to 10240.
+ -o: The rest of the argument is the output file instead of
+ using stdout.
+ -s: Don't delete the database file before opening it, i.e.
+ use the database file from a previous run.
+
+Dbtest requires two arguments, the type of access "hash", "recno"
+or "btree", and the script name or "-" to indicate stdin.
--- /dev/null
+/*-
+ * Copyright (c) 1990, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Mike Olson.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#if defined(LIBC_SCCS) && !defined(lint)
+static char sccsid[] = "@(#)main.c 8.1 (Berkeley) 6/4/93";
+#endif /* LIBC_SCCS and not lint */
+
+#include <sys/param.h>
+#include <fcntl.h>
+#include <db.h>
+#include <errno.h>
+#include <stdio.h>
+#include <ctype.h>
+#include <stdlib.h>
+#include <string.h>
+#include "btree.h"
+
+typedef struct cmd_table {
+ char *cmd;
+ int nargs;
+ int rconv;
+ void (*func) __P((DB *, char **));
+ char *usage, *descrip;
+} cmd_table;
+
+int stopstop;
+DB *globaldb;
+
+void append __P((DB *, char **));
+void bstat __P((DB *, char **));
+void cursor __P((DB *, char **));
+void delcur __P((DB *, char **));
+void delete __P((DB *, char **));
+void dump __P((DB *, char **));
+void first __P((DB *, char **));
+void get __P((DB *, char **));
+void help __P((DB *, char **));
+void iafter __P((DB *, char **));
+void ibefore __P((DB *, char **));
+void icursor __P((DB *, char **));
+void insert __P((DB *, char **));
+void keydata __P((DBT *, DBT *));
+void last __P((DB *, char **));
+void list __P((DB *, char **));
+void load __P((DB *, char **));
+void mstat __P((DB *, char **));
+void next __P((DB *, char **));
+int parse __P((char *, char **, int));
+void previous __P((DB *, char **));
+void show __P((DB *, char **));
+void usage __P((void));
+void user __P((DB *));
+
+cmd_table commands[] = {
+ "?", 0, 0, help, "help", NULL,
+ "a", 2, 1, append, "append key def", "append key with data def",
+ "b", 0, 0, bstat, "bstat", "stat btree",
+ "c", 1, 1, cursor, "cursor word", "move cursor to word",
+ "delc", 0, 0, delcur, "delcur", "delete key the cursor references",
+ "dele", 1, 1, delete, "delete word", "delete word",
+ "d", 0, 0, dump, "dump", "dump database",
+ "f", 0, 0, first, "first", "move cursor to first record",
+ "g", 1, 1, get, "get key", "locate key",
+ "h", 0, 0, help, "help", "print command summary",
+ "ia", 2, 1, iafter, "iafter key data", "insert data after key",
+ "ib", 2, 1, ibefore, "ibefore key data", "insert data before key",
+ "ic", 2, 1, icursor, "icursor key data", "replace cursor",
+ "in", 2, 1, insert, "insert key def", "insert key with data def",
+ "la", 0, 0, last, "last", "move cursor to last record",
+ "li", 1, 1, list, "list file", "list to a file",
+ "loa", 1, 0, load, "load file", NULL,
+ "loc", 1, 1, get, "get key", NULL,
+ "m", 0, 0, mstat, "mstat", "stat memory pool",
+ "n", 0, 0, next, "next", "move cursor forward one record",
+ "p", 0, 0, previous, "previous", "move cursor back one record",
+ "q", 0, 0, NULL, "quit", "quit",
+ "sh", 1, 0, show, "show page", "dump a page",
+ { NULL },
+};
+
+int recno; /* use record numbers */
+char *dict = "words"; /* default dictionary */
+char *progname;
+
+int
+main(argc, argv)
+ int argc;
+ char **argv;
+{
+ int c;
+ DB *db;
+ BTREEINFO b;
+
+ progname = *argv;
+
+ b.flags = 0;
+ b.cachesize = 0;
+ b.maxkeypage = 0;
+ b.minkeypage = 0;
+ b.psize = 0;
+ b.compare = NULL;
+ b.prefix = NULL;
+ b.lorder = 0;
+
+ while ((c = getopt(argc, argv, "bc:di:lp:ru")) != EOF) {
+ switch (c) {
+ case 'b':
+ b.lorder = BIG_ENDIAN;
+ break;
+ case 'c':
+ b.cachesize = atoi(optarg);
+ break;
+ case 'd':
+ b.flags |= R_DUP;
+ break;
+ case 'i':
+ dict = optarg;
+ break;
+ case 'l':
+ b.lorder = LITTLE_ENDIAN;
+ break;
+ case 'p':
+ b.psize = atoi(optarg);
+ break;
+ case 'r':
+ recno = 1;
+ break;
+ case 'u':
+ b.flags = 0;
+ break;
+ default:
+ usage();
+ }
+ }
+ argc -= optind;
+ argv += optind;
+
+ if (recno)
+ db = dbopen(*argv == NULL ? NULL : *argv, O_RDWR,
+ 0, DB_RECNO, NULL);
+ else
+ db = dbopen(*argv == NULL ? NULL : *argv, O_CREAT|O_RDWR,
+ 0600, DB_BTREE, &b);
+
+ if (db == NULL) {
+ (void)fprintf(stderr, "dbopen: %s\n", strerror(errno));
+ exit(1);
+ }
+ globaldb = db;
+ user(db);
+ exit(0);
+ /* NOTREACHED */
+}
+
+void
+user(db)
+ DB *db;
+{
+ FILE *ifp;
+ int argc, i, last;
+ char *lbuf, *argv[4], buf[512];
+
+ if ((ifp = fopen("/dev/tty", "r")) == NULL) {
+ (void)fprintf(stderr,
+ "/dev/tty: %s\n", strerror(errno));
+ exit(1);
+ }
+ for (last = 0;;) {
+ (void)printf("> ");
+ (void)fflush(stdout);
+ if ((lbuf = fgets(&buf[0], 512, ifp)) == NULL)
+ break;
+ if (lbuf[0] == '\n') {
+ i = last;
+ goto uselast;
+ }
+ lbuf[strlen(lbuf) - 1] = '\0';
+
+ if (lbuf[0] == 'q')
+ break;
+
+ argc = parse(lbuf, &argv[0], 3);
+ if (argc == 0)
+ continue;
+
+ for (i = 0; commands[i].cmd != NULL; i++)
+ if (strncmp(commands[i].cmd, argv[0],
+ strlen(commands[i].cmd)) == 0)
+ break;
+
+ if (commands[i].cmd == NULL) {
+ (void)fprintf(stderr,
+ "%s: command unknown ('help' for help)\n", lbuf);
+ continue;
+ }
+
+ if (commands[i].nargs != argc - 1) {
+ (void)fprintf(stderr, "usage: %s\n", commands[i].usage);
+ continue;
+ }
+
+ if (recno && commands[i].rconv) {
+ static recno_t nlong;
+ nlong = atoi(argv[1]);
+ argv[1] = (char *)&nlong;
+ }
+uselast: last = i;
+ (*commands[i].func)(db, argv);
+ }
+ if ((db->sync)(db) == RET_ERROR)
+ perror("dbsync");
+ else if ((db->close)(db) == RET_ERROR)
+ perror("dbclose");
+}
+
+int
+parse(lbuf, argv, maxargc)
+ char *lbuf, **argv;
+ int maxargc;
+{
+ int argc = 0;
+ char *c;
+
+ c = lbuf;
+ while (isspace(*c))
+ c++;
+ while (*c != '\0' && argc < maxargc) {
+ *argv++ = c;
+ argc++;
+ while (!isspace(*c) && *c != '\0') {
+ c++;
+ }
+ while (isspace(*c))
+ *c++ = '\0';
+ }
+ return (argc);
+}
+
+void
+append(db, argv)
+ DB *db;
+ char **argv;
+{
+ DBT key, data;
+ int status;
+
+ if (!recno) {
+ (void)fprintf(stderr,
+ "append only available for recno db's.\n");
+ return;
+ }
+ key.data = argv[1];
+ key.size = sizeof(recno_t);
+ data.data = argv[2];
+ data.size = strlen(data.data);
+ status = (db->put)(db, &key, &data, R_APPEND);
+ switch (status) {
+ case RET_ERROR:
+ perror("append/put");
+ break;
+ case RET_SPECIAL:
+ (void)printf("%s (duplicate key)\n", argv[1]);
+ break;
+ case RET_SUCCESS:
+ break;
+ }
+}
+
+void
+cursor(db, argv)
+ DB *db;
+ char **argv;
+{
+ DBT data, key;
+ int status;
+
+ key.data = argv[1];
+ if (recno)
+ key.size = sizeof(recno_t);
+ else
+ key.size = strlen(argv[1]) + 1;
+ status = (*db->seq)(db, &key, &data, R_CURSOR);
+ switch (status) {
+ case RET_ERROR:
+ perror("cursor/seq");
+ break;
+ case RET_SPECIAL:
+ (void)printf("key not found\n");
+ break;
+ case RET_SUCCESS:
+ keydata(&key, &data);
+ break;
+ }
+}
+
+void
+delcur(db, argv)
+ DB *db;
+ char **argv;
+{
+ int status;
+
+ status = (*db->del)(db, NULL, R_CURSOR);
+
+ if (status == RET_ERROR)
+ perror("delcur/del");
+}
+
+void
+delete(db, argv)
+ DB *db;
+ char **argv;
+{
+ DBT key;
+ int status;
+
+ key.data = argv[1];
+ if (recno)
+ key.size = sizeof(recno_t);
+ else
+ key.size = strlen(argv[1]) + 1;
+
+ status = (*db->del)(db, &key, 0);
+ switch (status) {
+ case RET_ERROR:
+ perror("delete/del");
+ break;
+ case RET_SPECIAL:
+ (void)printf("key not found\n");
+ break;
+ case RET_SUCCESS:
+ break;
+ }
+}
+
+void
+dump(db, argv)
+ DB *db;
+ char **argv;
+{
+ __bt_dump(db);
+}
+
+void
+first(db, argv)
+ DB *db;
+ char **argv;
+{
+ DBT data, key;
+ int status;
+
+ status = (*db->seq)(db, &key, &data, R_FIRST);
+
+ switch (status) {
+ case RET_ERROR:
+ perror("first/seq");
+ break;
+ case RET_SPECIAL:
+ (void)printf("no more keys\n");
+ break;
+ case RET_SUCCESS:
+ keydata(&key, &data);
+ break;
+ }
+}
+
+void
+get(db, argv)
+ DB *db;
+ char **argv;
+{
+ DBT data, key;
+ int status;
+
+ key.data = argv[1];
+ if (recno)
+ key.size = sizeof(recno_t);
+ else
+ key.size = strlen(argv[1]) + 1;
+
+ status = (*db->get)(db, &key, &data, 0);
+
+ switch (status) {
+ case RET_ERROR:
+ perror("get/get");
+ break;
+ case RET_SPECIAL:
+ (void)printf("key not found\n");
+ break;
+ case RET_SUCCESS:
+ keydata(&key, &data);
+ break;
+ }
+}
+
+void
+help(db, argv)
+ DB *db;
+ char **argv;
+{
+ int i;
+
+ for (i = 0; commands[i].cmd; i++)
+ if (commands[i].descrip)
+ (void)printf("%s: %s\n",
+ commands[i].usage, commands[i].descrip);
+}
+
+void
+iafter(db, argv)
+ DB *db;
+ char **argv;
+{
+ DBT key, data;
+ int status;
+
+ if (!recno) {
+ (void)fprintf(stderr,
+ "iafter only available for recno db's.\n");
+ return;
+ }
+ key.data = argv[1];
+ key.size = sizeof(recno_t);
+ data.data = argv[2];
+ data.size = strlen(data.data);
+ status = (db->put)(db, &key, &data, R_IAFTER);
+ switch (status) {
+ case RET_ERROR:
+ perror("iafter/put");
+ break;
+ case RET_SPECIAL:
+ (void)printf("%s (duplicate key)\n", argv[1]);
+ break;
+ case RET_SUCCESS:
+ break;
+ }
+}
+
+void
+ibefore(db, argv)
+ DB *db;
+ char **argv;
+{
+ DBT key, data;
+ int status;
+
+ if (!recno) {
+ (void)fprintf(stderr,
+ "ibefore only available for recno db's.\n");
+ return;
+ }
+ key.data = argv[1];
+ key.size = sizeof(recno_t);
+ data.data = argv[2];
+ data.size = strlen(data.data);
+ status = (db->put)(db, &key, &data, R_IBEFORE);
+ switch (status) {
+ case RET_ERROR:
+ perror("ibefore/put");
+ break;
+ case RET_SPECIAL:
+ (void)printf("%s (duplicate key)\n", argv[1]);
+ break;
+ case RET_SUCCESS:
+ break;
+ }
+}
+
+void
+icursor(db, argv)
+ DB *db;
+ char **argv;
+{
+ int status;
+ DBT data, key;
+
+ key.data = argv[1];
+ if (recno)
+ key.size = sizeof(recno_t);
+ else
+ key.size = strlen(argv[1]) + 1;
+ data.data = argv[2];
+ data.size = strlen(argv[2]) + 1;
+
+ status = (*db->put)(db, &key, &data, R_CURSOR);
+ switch (status) {
+ case RET_ERROR:
+ perror("icursor/put");
+ break;
+ case RET_SPECIAL:
+ (void)printf("%s (duplicate key)\n", argv[1]);
+ break;
+ case RET_SUCCESS:
+ break;
+ }
+}
+
+void
+insert(db, argv)
+ DB *db;
+ char **argv;
+{
+ int status;
+ DBT data, key;
+
+ key.data = argv[1];
+ if (recno)
+ key.size = sizeof(recno_t);
+ else
+ key.size = strlen(argv[1]) + 1;
+ data.data = argv[2];
+ data.size = strlen(argv[2]) + 1;
+
+ status = (*db->put)(db, &key, &data, R_NOOVERWRITE);
+ switch (status) {
+ case RET_ERROR:
+ perror("insert/put");
+ break;
+ case RET_SPECIAL:
+ (void)printf("%s (duplicate key)\n", argv[1]);
+ break;
+ case RET_SUCCESS:
+ break;
+ }
+}
+
+void
+last(db, argv)
+ DB *db;
+ char **argv;
+{
+ DBT data, key;
+ int status;
+
+ status = (*db->seq)(db, &key, &data, R_LAST);
+
+ switch (status) {
+ case RET_ERROR:
+ perror("last/seq");
+ break;
+ case RET_SPECIAL:
+ (void)printf("no more keys\n");
+ break;
+ case RET_SUCCESS:
+ keydata(&key, &data);
+ break;
+ }
+}
+
+void
+list(db, argv)
+ DB *db;
+ char **argv;
+{
+ DBT data, key;
+ FILE *fp;
+ int status;
+
+ if ((fp = fopen(argv[1], "w")) == NULL) {
+ (void)fprintf(stderr, "%s: %s\n", argv[1], strerror(errno));
+ return;
+ }
+ status = (*db->seq)(db, &key, &data, R_FIRST);
+ while (status == RET_SUCCESS) {
+ (void)fprintf(fp, "%s\n", key.data);
+ status = (*db->seq)(db, &key, &data, R_NEXT);
+ }
+ if (status == RET_ERROR)
+ perror("list/seq");
+}
+
+DB *BUGdb;
+void
+load(db, argv)
+ DB *db;
+ char **argv;
+{
+ register char *p, *t;
+ FILE *fp;
+ DBT data, key;
+ recno_t cnt;
+ size_t len;
+ int status;
+ char *lp, buf[16 * 1024];
+
+ BUGdb = db;
+ if ((fp = fopen(argv[1], "r")) == NULL) {
+ (void)fprintf(stderr, "%s: %s\n", argv[1], strerror(errno));
+ return;
+ }
+ (void)printf("loading %s...\n", argv[1]);
+
+ for (cnt = 1; (lp = fgetline(fp, &len)) != NULL; ++cnt) {
+ if (recno) {
+ key.data = &cnt;
+ key.size = sizeof(recno_t);
+ data.data = lp;
+ data.size = len + 1;
+ } else {
+ key.data = lp;
+ key.size = len + 1;
+ for (p = lp + len - 1, t = buf; p >= lp; *t++ = *p--);
+ *t = '\0';
+ data.data = buf;
+ data.size = len + 1;
+ }
+
+ status = (*db->put)(db, &key, &data, R_NOOVERWRITE);
+ switch (status) {
+ case RET_ERROR:
+ perror("load/put");
+ exit(1);
+ case RET_SPECIAL:
+ if (recno)
+ (void)fprintf(stderr,
+ "duplicate: %ld {%s}\n", cnt, data.data);
+ else
+ (void)fprintf(stderr,
+ "duplicate: %ld {%s}\n", cnt, key.data);
+ exit(1);
+ case RET_SUCCESS:
+ break;
+ }
+ }
+ (void)fclose(fp);
+}
+
+void
+next(db, argv)
+ DB *db;
+ char **argv;
+{
+ DBT data, key;
+ int status;
+
+ status = (*db->seq)(db, &key, &data, R_NEXT);
+
+ switch (status) {
+ case RET_ERROR:
+ perror("next/seq");
+ break;
+ case RET_SPECIAL:
+ (void)printf("no more keys\n");
+ break;
+ case RET_SUCCESS:
+ keydata(&key, &data);
+ break;
+ }
+}
+
+void
+previous(db, argv)
+ DB *db;
+ char **argv;
+{
+ DBT data, key;
+ int status;
+
+ status = (*db->seq)(db, &key, &data, R_PREV);
+
+ switch (status) {
+ case RET_ERROR:
+ perror("previous/seq");
+ break;
+ case RET_SPECIAL:
+ (void)printf("no more keys\n");
+ break;
+ case RET_SUCCESS:
+ keydata(&key, &data);
+ break;
+ }
+}
+
+void
+show(db, argv)
+ DB *db;
+ char **argv;
+{
+ BTREE *t;
+ PAGE *h;
+ pgno_t pg;
+
+ pg = atoi(argv[1]);
+ t = db->internal;
+ if ((h = mpool_get(t->bt_mp, pg, 0)) == NULL) {
+ (void)printf("getpage of %ld failed\n", pg);
+ return;
+ }
+ if (pg == 0)
+ __bt_dmpage(h);
+ else
+ __bt_dpage(h);
+ mpool_put(t->bt_mp, h, 0);
+}
+
+void
+bstat(db, argv)
+ DB *db;
+ char **argv;
+{
+ (void)printf("BTREE\n");
+ __bt_stat(db);
+}
+
+void
+mstat(db, argv)
+ DB *db;
+ char **argv;
+{
+ (void)printf("MPOOL\n");
+ mpool_stat(((BTREE *)db->internal)->bt_mp);
+}
+
+void
+keydata(key, data)
+ DBT *key, *data;
+{
+ if (!recno && key->size > 0)
+ (void)printf("%s/", key->data);
+ if (data->size > 0)
+ (void)printf("%s", data->data);
+ (void)printf("\n");
+}
+
+void
+usage()
+{
+ (void)fprintf(stderr,
+ "usage: %s [-bdlu] [-c cache] [-i file] [-p page] [file]\n",
+ progname);
+ exit (1);
+}
--- /dev/null
+/*-
+ * Copyright (c) 1992, 1993, 1994
+ * The Regents of the University of California. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1992, 1993, 1994\n\
+ The Regents of the University of California. All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)dbtest.c 8.17 (Berkeley) 9/1/94";
+#endif /* not lint */
+
+#include <sys/param.h>
+#include <sys/stat.h>
+
+#include <ctype.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <limits.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <db.h>
+
+enum S { COMMAND, COMPARE, GET, PUT, REMOVE, SEQ, SEQFLAG, KEY, DATA };
+
+void compare __P((DBT *, DBT *));
+DBTYPE dbtype __P((char *));
+void dump __P((DB *, int));
+void err __P((const char *, ...));
+void get __P((DB *, DBT *));
+void getdata __P((DB *, DBT *, DBT *));
+void put __P((DB *, DBT *, DBT *));
+void rem __P((DB *, DBT *));
+char *sflags __P((int));
+void synk __P((DB *));
+void *rfile __P((char *, size_t *));
+void seq __P((DB *, DBT *));
+u_int setflags __P((char *));
+void *setinfo __P((DBTYPE, char *));
+void usage __P((void));
+void *xmalloc __P((char *, size_t));
+
+DBTYPE type; /* Database type. */
+void *infop; /* Iflags. */
+u_long lineno; /* Current line in test script. */
+u_int flags; /* Current DB flags. */
+int ofd = STDOUT_FILENO; /* Standard output fd. */
+
+DB *XXdbp; /* Global for gdb. */
+int XXlineno; /* Fast breakpoint for gdb. */
+
+int
+main(argc, argv)
+ int argc;
+ char *argv[];
+{
+ extern int optind;
+ extern char *optarg;
+ enum S command, state;
+ DB *dbp;
+ DBT data, key, keydata;
+ size_t len;
+ int ch, oflags, sflag;
+ char *fname, *infoarg, *p, *t, buf[8 * 1024];
+
+ infoarg = NULL;
+ fname = NULL;
+ oflags = O_CREAT | O_RDWR;
+ sflag = 0;
+ while ((ch = getopt(argc, argv, "f:i:lo:s")) != EOF)
+ switch (ch) {
+ case 'f':
+ fname = optarg;
+ break;
+ case 'i':
+ infoarg = optarg;
+ break;
+ case 'l':
+ oflags |= DB_LOCK;
+ break;
+ case 'o':
+ if ((ofd = open(optarg,
+ O_WRONLY|O_CREAT|O_TRUNC, 0666)) < 0)
+ err("%s: %s", optarg, strerror(errno));
+ break;
+ case 's':
+ sflag = 1;
+ break;
+ case '?':
+ default:
+ usage();
+ }
+ argc -= optind;
+ argv += optind;
+
+ if (argc != 2)
+ usage();
+
+ /* Set the type. */
+ type = dbtype(*argv++);
+
+ /* Open the descriptor file. */
+ if (strcmp(*argv, "-") && freopen(*argv, "r", stdin) == NULL)
+ err("%s: %s", *argv, strerror(errno));
+
+ /* Set up the db structure as necessary. */
+ if (infoarg == NULL)
+ infop = NULL;
+ else
+ for (p = strtok(infoarg, ",\t "); p != NULL;
+ p = strtok(0, ",\t "))
+ if (*p != '\0')
+ infop = setinfo(type, p);
+
+ /*
+ * Open the DB. Delete any preexisting copy, you almost never
+ * want it around, and it often screws up tests.
+ */
+ if (fname == NULL) {
+ p = getenv("TMPDIR");
+ if (p == NULL)
+ p = "/var/tmp";
+ (void)sprintf(buf, "%s/__dbtest", p);
+ fname = buf;
+ (void)unlink(buf);
+ } else if (!sflag)
+ (void)unlink(fname);
+
+ if ((dbp = dbopen(fname,
+ oflags, S_IRUSR | S_IWUSR, type, infop)) == NULL)
+ err("dbopen: %s", strerror(errno));
+ XXdbp = dbp;
+
+ state = COMMAND;
+ for (lineno = 1;
+ (p = fgets(buf, sizeof(buf), stdin)) != NULL; ++lineno) {
+ /* Delete the newline, displaying the key/data is easier. */
+ if (ofd == STDOUT_FILENO && (t = strchr(p, '\n')) != NULL)
+ *t = '\0';
+ if ((len = strlen(buf)) == 0 || isspace(*p) || *p == '#')
+ continue;
+
+ /* Convenient gdb break point. */
+ if (XXlineno == lineno)
+ XXlineno = 1;
+ switch (*p) {
+ case 'c': /* compare */
+ if (state != COMMAND)
+ err("line %lu: not expecting command", lineno);
+ state = KEY;
+ command = COMPARE;
+ break;
+ case 'e': /* echo */
+ if (state != COMMAND)
+ err("line %lu: not expecting command", lineno);
+ /* Don't display the newline, if CR at EOL. */
+ if (p[len - 2] == '\r')
+ --len;
+ if (write(ofd, p + 1, len - 1) != len - 1 ||
+ write(ofd, "\n", 1) != 1)
+ err("write: %s", strerror(errno));
+ break;
+ case 'g': /* get */
+ if (state != COMMAND)
+ err("line %lu: not expecting command", lineno);
+ state = KEY;
+ command = GET;
+ break;
+ case 'p': /* put */
+ if (state != COMMAND)
+ err("line %lu: not expecting command", lineno);
+ state = KEY;
+ command = PUT;
+ break;
+ case 'r': /* remove */
+ if (state != COMMAND)
+ err("line %lu: not expecting command", lineno);
+ if (flags == R_CURSOR) {
+ rem(dbp, &key);
+ state = COMMAND;
+ } else {
+ state = KEY;
+ command = REMOVE;
+ }
+ break;
+ case 'S': /* sync */
+ if (state != COMMAND)
+ err("line %lu: not expecting command", lineno);
+ synk(dbp);
+ state = COMMAND;
+ break;
+ case 's': /* seq */
+ if (state != COMMAND)
+ err("line %lu: not expecting command", lineno);
+ if (flags == R_CURSOR) {
+ state = KEY;
+ command = SEQ;
+ } else
+ seq(dbp, &key);
+ break;
+ case 'f':
+ flags = setflags(p + 1);
+ break;
+ case 'D': /* data file */
+ if (state != DATA)
+ err("line %lu: not expecting data", lineno);
+ data.data = rfile(p + 1, &data.size);
+ goto ldata;
+ case 'd': /* data */
+ if (state != DATA)
+ err("line %lu: not expecting data", lineno);
+ data.data = xmalloc(p + 1, len - 1);
+ data.size = len - 1;
+ldata: switch (command) {
+ case COMPARE:
+ compare(&keydata, &data);
+ break;
+ case PUT:
+ put(dbp, &key, &data);
+ break;
+ default:
+ err("line %lu: command doesn't take data",
+ lineno);
+ }
+ if (type != DB_RECNO)
+ free(key.data);
+ free(data.data);
+ state = COMMAND;
+ break;
+ case 'K': /* key file */
+ if (state != KEY)
+ err("line %lu: not expecting a key", lineno);
+ if (type == DB_RECNO)
+ err("line %lu: 'K' not available for recno",
+ lineno);
+ key.data = rfile(p + 1, &key.size);
+ goto lkey;
+ case 'k': /* key */
+ if (state != KEY)
+ err("line %lu: not expecting a key", lineno);
+ if (type == DB_RECNO) {
+ static recno_t recno;
+ recno = atoi(p + 1);
+ key.data = &recno;
+ key.size = sizeof(recno);
+ } else {
+ key.data = xmalloc(p + 1, len - 1);
+ key.size = len - 1;
+ }
+lkey: switch (command) {
+ case COMPARE:
+ getdata(dbp, &key, &keydata);
+ state = DATA;
+ break;
+ case GET:
+ get(dbp, &key);
+ if (type != DB_RECNO)
+ free(key.data);
+ state = COMMAND;
+ break;
+ case PUT:
+ state = DATA;
+ break;
+ case REMOVE:
+ rem(dbp, &key);
+ if ((type != DB_RECNO) && (flags != R_CURSOR))
+ free(key.data);
+ state = COMMAND;
+ break;
+ case SEQ:
+ seq(dbp, &key);
+ if ((type != DB_RECNO) && (flags != R_CURSOR))
+ free(key.data);
+ state = COMMAND;
+ break;
+ default:
+ err("line %lu: command doesn't take a key",
+ lineno);
+ }
+ break;
+ case 'o':
+ dump(dbp, p[1] == 'r');
+ break;
+ default:
+ err("line %lu: %s: unknown command character",
+ lineno, p);
+ }
+ }
+#ifdef STATISTICS
+ /*
+ * -l must be used (DB_LOCK must be set) for this to be
+ * used, otherwise a page will be locked and it will fail.
+ */
+ if (type == DB_BTREE && oflags & DB_LOCK)
+ __bt_stat(dbp);
+#endif
+ if (dbp->close(dbp))
+ err("db->close: %s", strerror(errno));
+ (void)close(ofd);
+ exit(0);
+}
+
+#define NOOVERWRITE "put failed, would overwrite key\n"
+
+void
+compare(db1, db2)
+ DBT *db1, *db2;
+{
+ register size_t len;
+ register u_char *p1, *p2;
+
+ if (db1->size != db2->size)
+ printf("compare failed: key->data len %lu != data len %lu\n",
+ db1->size, db2->size);
+
+ len = MIN(db1->size, db2->size);
+ for (p1 = db1->data, p2 = db2->data; len--;)
+ if (*p1++ != *p2++) {
+ printf("compare failed at offset %d\n",
+ p1 - (u_char *)db1->data);
+ break;
+ }
+}
+
+void
+get(dbp, kp)
+ DB *dbp;
+ DBT *kp;
+{
+ DBT data;
+
+ switch (dbp->get(dbp, kp, &data, flags)) {
+ case 0:
+ (void)write(ofd, data.data, data.size);
+ if (ofd == STDOUT_FILENO)
+ (void)write(ofd, "\n", 1);
+ break;
+ case -1:
+ err("line %lu: get: %s", lineno, strerror(errno));
+ /* NOTREACHED */
+ case 1:
+#define NOSUCHKEY "get failed, no such key\n"
+ if (ofd != STDOUT_FILENO)
+ (void)write(ofd, NOSUCHKEY, sizeof(NOSUCHKEY) - 1);
+ else
+ (void)fprintf(stderr, "%d: %.*s: %s",
+ lineno, MIN(kp->size, 20), kp->data, NOSUCHKEY);
+#undef NOSUCHKEY
+ break;
+ }
+}
+
+void
+getdata(dbp, kp, dp)
+ DB *dbp;
+ DBT *kp, *dp;
+{
+ switch (dbp->get(dbp, kp, dp, flags)) {
+ case 0:
+ return;
+ case -1:
+ err("line %lu: getdata: %s", lineno, strerror(errno));
+ /* NOTREACHED */
+ case 1:
+ err("line %lu: getdata failed, no such key", lineno);
+ /* NOTREACHED */
+ }
+}
+
+void
+put(dbp, kp, dp)
+ DB *dbp;
+ DBT *kp, *dp;
+{
+ switch (dbp->put(dbp, kp, dp, flags)) {
+ case 0:
+ break;
+ case -1:
+ err("line %lu: put: %s", lineno, strerror(errno));
+ /* NOTREACHED */
+ case 1:
+ (void)write(ofd, NOOVERWRITE, sizeof(NOOVERWRITE) - 1);
+ break;
+ }
+}
+
+void
+rem(dbp, kp)
+ DB *dbp;
+ DBT *kp;
+{
+ switch (dbp->del(dbp, kp, flags)) {
+ case 0:
+ break;
+ case -1:
+ err("line %lu: rem: %s", lineno, strerror(errno));
+ /* NOTREACHED */
+ case 1:
+#define NOSUCHKEY "rem failed, no such key\n"
+ if (ofd != STDOUT_FILENO)
+ (void)write(ofd, NOSUCHKEY, sizeof(NOSUCHKEY) - 1);
+ else if (flags != R_CURSOR)
+ (void)fprintf(stderr, "%d: %.*s: %s",
+ lineno, MIN(kp->size, 20), kp->data, NOSUCHKEY);
+ else
+ (void)fprintf(stderr,
+ "%d: rem of cursor failed\n", lineno);
+#undef NOSUCHKEY
+ break;
+ }
+}
+
+void
+synk(dbp)
+ DB *dbp;
+{
+ switch (dbp->sync(dbp, flags)) {
+ case 0:
+ break;
+ case -1:
+ err("line %lu: synk: %s", lineno, strerror(errno));
+ /* NOTREACHED */
+ }
+}
+
+void
+seq(dbp, kp)
+ DB *dbp;
+ DBT *kp;
+{
+ DBT data;
+
+ switch (dbp->seq(dbp, kp, &data, flags)) {
+ case 0:
+ (void)write(ofd, data.data, data.size);
+ if (ofd == STDOUT_FILENO)
+ (void)write(ofd, "\n", 1);
+ break;
+ case -1:
+ err("line %lu: seq: %s", lineno, strerror(errno));
+ /* NOTREACHED */
+ case 1:
+#define NOSUCHKEY "seq failed, no such key\n"
+ if (ofd != STDOUT_FILENO)
+ (void)write(ofd, NOSUCHKEY, sizeof(NOSUCHKEY) - 1);
+ else if (flags == R_CURSOR)
+ (void)fprintf(stderr, "%d: %.*s: %s",
+ lineno, MIN(kp->size, 20), kp->data, NOSUCHKEY);
+ else
+ (void)fprintf(stderr,
+ "%d: seq (%s) failed\n", lineno, sflags(flags));
+#undef NOSUCHKEY
+ break;
+ }
+}
+
+void
+dump(dbp, rev)
+ DB *dbp;
+ int rev;
+{
+ DBT key, data;
+ int flags, nflags;
+
+ if (rev) {
+ flags = R_LAST;
+ nflags = R_PREV;
+ } else {
+ flags = R_FIRST;
+ nflags = R_NEXT;
+ }
+ for (;; flags = nflags)
+ switch (dbp->seq(dbp, &key, &data, flags)) {
+ case 0:
+ (void)write(ofd, data.data, data.size);
+ if (ofd == STDOUT_FILENO)
+ (void)write(ofd, "\n", 1);
+ break;
+ case 1:
+ goto done;
+ case -1:
+ err("line %lu: (dump) seq: %s",
+ lineno, strerror(errno));
+ /* NOTREACHED */
+ }
+done: return;
+}
+
+u_int
+setflags(s)
+ char *s;
+{
+ char *p, *index();
+
+ for (; isspace(*s); ++s);
+ if (*s == '\n' || *s == '\0')
+ return (0);
+ if ((p = index(s, '\n')) != NULL)
+ *p = '\0';
+ if (!strcmp(s, "R_CURSOR")) return (R_CURSOR);
+ if (!strcmp(s, "R_FIRST")) return (R_FIRST);
+ if (!strcmp(s, "R_IAFTER")) return (R_IAFTER);
+ if (!strcmp(s, "R_IBEFORE")) return (R_IBEFORE);
+ if (!strcmp(s, "R_LAST")) return (R_LAST);
+ if (!strcmp(s, "R_NEXT")) return (R_NEXT);
+ if (!strcmp(s, "R_NOOVERWRITE")) return (R_NOOVERWRITE);
+ if (!strcmp(s, "R_PREV")) return (R_PREV);
+ if (!strcmp(s, "R_SETCURSOR")) return (R_SETCURSOR);
+
+ err("line %lu: %s: unknown flag", lineno, s);
+ /* NOTREACHED */
+}
+
+char *
+sflags(flags)
+ int flags;
+{
+ switch (flags) {
+ case R_CURSOR: return ("R_CURSOR");
+ case R_FIRST: return ("R_FIRST");
+ case R_IAFTER: return ("R_IAFTER");
+ case R_IBEFORE: return ("R_IBEFORE");
+ case R_LAST: return ("R_LAST");
+ case R_NEXT: return ("R_NEXT");
+ case R_NOOVERWRITE: return ("R_NOOVERWRITE");
+ case R_PREV: return ("R_PREV");
+ case R_SETCURSOR: return ("R_SETCURSOR");
+ }
+
+ return ("UNKNOWN!");
+}
+
+DBTYPE
+dbtype(s)
+ char *s;
+{
+ if (!strcmp(s, "btree"))
+ return (DB_BTREE);
+ if (!strcmp(s, "hash"))
+ return (DB_HASH);
+ if (!strcmp(s, "recno"))
+ return (DB_RECNO);
+ err("%s: unknown type (use btree, hash or recno)", s);
+ /* NOTREACHED */
+}
+
+void *
+setinfo(type, s)
+ DBTYPE type;
+ char *s;
+{
+ static BTREEINFO ib;
+ static HASHINFO ih;
+ static RECNOINFO rh;
+ char *eq, *index();
+
+ if ((eq = index(s, '=')) == NULL)
+ err("%s: illegal structure set statement", s);
+ *eq++ = '\0';
+ if (!isdigit(*eq))
+ err("%s: structure set statement must be a number", s);
+
+ switch (type) {
+ case DB_BTREE:
+ if (!strcmp("flags", s)) {
+ ib.flags = atoi(eq);
+ return (&ib);
+ }
+ if (!strcmp("cachesize", s)) {
+ ib.cachesize = atoi(eq);
+ return (&ib);
+ }
+ if (!strcmp("maxkeypage", s)) {
+ ib.maxkeypage = atoi(eq);
+ return (&ib);
+ }
+ if (!strcmp("minkeypage", s)) {
+ ib.minkeypage = atoi(eq);
+ return (&ib);
+ }
+ if (!strcmp("lorder", s)) {
+ ib.lorder = atoi(eq);
+ return (&ib);
+ }
+ if (!strcmp("psize", s)) {
+ ib.psize = atoi(eq);
+ return (&ib);
+ }
+ break;
+ case DB_HASH:
+ if (!strcmp("bsize", s)) {
+ ih.bsize = atoi(eq);
+ return (&ih);
+ }
+ if (!strcmp("ffactor", s)) {
+ ih.ffactor = atoi(eq);
+ return (&ih);
+ }
+ if (!strcmp("nelem", s)) {
+ ih.nelem = atoi(eq);
+ return (&ih);
+ }
+ if (!strcmp("cachesize", s)) {
+ ih.cachesize = atoi(eq);
+ return (&ih);
+ }
+ if (!strcmp("lorder", s)) {
+ ih.lorder = atoi(eq);
+ return (&ih);
+ }
+ break;
+ case DB_RECNO:
+ if (!strcmp("flags", s)) {
+ rh.flags = atoi(eq);
+ return (&rh);
+ }
+ if (!strcmp("cachesize", s)) {
+ rh.cachesize = atoi(eq);
+ return (&rh);
+ }
+ if (!strcmp("lorder", s)) {
+ rh.lorder = atoi(eq);
+ return (&rh);
+ }
+ if (!strcmp("reclen", s)) {
+ rh.reclen = atoi(eq);
+ return (&rh);
+ }
+ if (!strcmp("bval", s)) {
+ rh.bval = atoi(eq);
+ return (&rh);
+ }
+ if (!strcmp("psize", s)) {
+ rh.psize = atoi(eq);
+ return (&rh);
+ }
+ break;
+ }
+ err("%s: unknown structure value", s);
+ /* NOTREACHED */
+}
+
+void *
+rfile(name, lenp)
+ char *name;
+ size_t *lenp;
+{
+ struct stat sb;
+ void *p;
+ int fd;
+ char *np, *index();
+
+ for (; isspace(*name); ++name);
+ if ((np = index(name, '\n')) != NULL)
+ *np = '\0';
+ if ((fd = open(name, O_RDONLY, 0)) < 0 ||
+ fstat(fd, &sb))
+ err("%s: %s\n", name, strerror(errno));
+#ifdef NOT_PORTABLE
+ if (sb.st_size > (off_t)SIZE_T_MAX)
+ err("%s: %s\n", name, strerror(E2BIG));
+#endif
+ if ((p = (void *)malloc((u_int)sb.st_size)) == NULL)
+ err("%s", strerror(errno));
+ (void)read(fd, p, (int)sb.st_size);
+ *lenp = sb.st_size;
+ (void)close(fd);
+ return (p);
+}
+
+void *
+xmalloc(text, len)
+ char *text;
+ size_t len;
+{
+ void *p;
+
+ if ((p = (void *)malloc(len)) == NULL)
+ err("%s", strerror(errno));
+ memmove(p, text, len);
+ return (p);
+}
+
+void
+usage()
+{
+ (void)fprintf(stderr,
+ "usage: dbtest [-l] [-f file] [-i info] [-o file] type script\n");
+ exit(1);
+}
+
+#if __STDC__
+#include <stdarg.h>
+#else
+#include <varargs.h>
+#endif
+
+void
+#if __STDC__
+err(const char *fmt, ...)
+#else
+err(fmt, va_alist)
+ char *fmt;
+ va_dcl
+#endif
+{
+ va_list ap;
+#if __STDC__
+ va_start(ap, fmt);
+#else
+ va_start(ap);
+#endif
+ (void)fprintf(stderr, "dbtest: ");
+ (void)vfprintf(stderr, fmt, ap);
+ va_end(ap);
+ (void)fprintf(stderr, "\n");
+ exit(1);
+ /* NOTREACHED */
+}
--- /dev/null
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1991, 1993\n\
+ The Regents of the University of California. All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)driver2.c 8.1 (Berkeley) 6/4/93";
+#endif /* not lint */
+
+/*
+ * Test driver, to try to tackle the large ugly-split problem.
+ */
+
+#include <sys/file.h>
+#include <stdio.h>
+#include "ndbm.h"
+
+int my_hash(key, len)
+ char *key;
+ int len;
+{
+ return(17); /* So I'm cruel... */
+}
+
+main(argc, argv)
+ int argc;
+{
+ DB *db;
+ DBT key, content;
+ char keybuf[2049];
+ char contentbuf[2049];
+ char buf[256];
+ int i;
+ HASHINFO info;
+
+ info.bsize = 1024;
+ info.ffactor = 5;
+ info.nelem = 1;
+ info.cachesize = NULL;
+#ifdef HASH_ID_PROGRAM_SPECIFIED
+ info.hash_id = HASH_ID_PROGRAM_SPECIFIED;
+ info.hash_func = my_hash;
+#else
+ info.hash = my_hash;
+#endif
+ info.lorder = 0;
+ if (!(db = dbopen("bigtest", O_RDWR | O_CREAT, 0644, DB_HASH, &info))) {
+ sprintf(buf, "dbopen: failed on file bigtest");
+ perror(buf);
+ exit(1);
+ }
+ srandom(17);
+ key.data = keybuf;
+ content.data = contentbuf;
+ bzero(keybuf, sizeof(keybuf));
+ bzero(contentbuf, sizeof(contentbuf));
+ for (i=1; i <= 500; i++) {
+ key.size = 128 + (random()&1023);
+ content.size = 128 + (random()&1023);
+/* printf("%d: Key size %d, data size %d\n", i, key.size,
+ content.size); */
+ sprintf(keybuf, "Key #%d", i);
+ sprintf(contentbuf, "Contents #%d", i);
+ if ((db->put)(db, &key, &content, R_NOOVERWRITE)) {
+ sprintf(buf, "dbm_store #%d", i);
+ perror(buf);
+ }
+ }
+ if ((db->close)(db)) {
+ perror("closing hash file");
+ exit(1);
+ }
+ exit(0);
+}
+
+
+
--- /dev/null
+#!/bin/sh
+#
+# @(#)makedb.sh 8.1 (Berkeley) 6/4/93
+
+awk '{i++; print $0; print i;}' /usr/share/dict/words > WORDS
+ls /bin /usr/bin /usr/ucb /etc | egrep '^(...|....|.....|......)$' | \
+sort | uniq | \
+awk '{
+ printf "%s\n", $0
+ for (i = 0; i < 1000; i++)
+ printf "%s+", $0
+ printf "\n"
+}' > LONG.DATA
--- /dev/null
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1991, 1993\n\
+ The Regents of the University of California. All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)tcreat3.c 8.1 (Berkeley) 6/4/93";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <sys/file.h>
+#include <stdio.h>
+#include <db.h>
+
+#define INITIAL 25000
+#define MAXWORDS 25000 /* # of elements in search table */
+
+char wp1[8192];
+char wp2[8192];
+main(argc, argv)
+char **argv;
+{
+ DBT item, key;
+ DB *dbp;
+ HASHINFO ctl;
+ FILE *fp;
+ int trash;
+
+ int i = 0;
+
+ argv++;
+ ctl.hash = NULL;
+ ctl.bsize = atoi(*argv++);
+ ctl.ffactor = atoi(*argv++);
+ ctl.nelem = atoi(*argv++);
+ ctl.lorder = 0;
+ if (!(dbp = dbopen( "hashtest",
+ O_CREAT|O_TRUNC|O_RDWR, 0600, DB_HASH, &ctl))){
+ /* create table */
+ fprintf(stderr, "cannot create: hash table (size %d)\n",
+ INITIAL);
+ exit(1);
+ }
+
+ key.data = wp1;
+ item.data = wp2;
+ while ( fgets(wp1, 8192, stdin) &&
+ fgets(wp2, 8192, stdin) &&
+ i++ < MAXWORDS) {
+/*
+* put info in structure, and structure in the item
+*/
+ key.size = strlen(wp1);
+ item.size = strlen(wp2);
+
+/*
+ * enter key/data pair into the table
+ */
+ if ((dbp->put)(dbp, &key, &item, R_NOOVERWRITE) != NULL) {
+ fprintf(stderr, "cannot enter: key %s\n",
+ item.data);
+ exit(1);
+ }
+ }
+
+ (dbp->close)(dbp);
+ exit(0);
+}
--- /dev/null
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1991, 1993\n\
+ The Regents of the University of California. All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)tdel.c 8.1 (Berkeley) 6/4/93";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <sys/file.h>
+#include <db.h>
+#include <stdio.h>
+
+#define INITIAL 25000
+#define MAXWORDS 25000 /* # of elements in search table */
+
+/* Usage: thash pagesize fillfactor file */
+char wp1[8192];
+char wp2[8192];
+main(argc, argv)
+char **argv;
+{
+ DBT item, key;
+ DB *dbp;
+ HASHINFO ctl;
+ FILE *fp;
+ int stat;
+
+ int i = 0;
+
+ argv++;
+ ctl.nelem = INITIAL;
+ ctl.hash = NULL;
+ ctl.bsize = atoi(*argv++);
+ ctl.ffactor = atoi(*argv++);
+ ctl.cachesize = 1024 * 1024; /* 1 MEG */
+ ctl.lorder = 0;
+ argc -= 2;
+ if (!(dbp = dbopen( NULL, O_CREAT|O_RDWR, 0400, DB_HASH, &ctl))) {
+ /* create table */
+ fprintf(stderr, "cannot create: hash table size %d)\n",
+ INITIAL);
+ exit(1);
+ }
+
+ key.data = wp1;
+ item.data = wp2;
+ while ( fgets(wp1, 8192, stdin) &&
+ fgets(wp2, 8192, stdin) &&
+ i++ < MAXWORDS) {
+/*
+* put info in structure, and structure in the item
+*/
+ key.size = strlen(wp1);
+ item.size = strlen(wp2);
+
+/*
+ * enter key/data pair into the table
+ */
+ if ((dbp->put)(dbp, &key, &item, R_NOOVERWRITE) != NULL) {
+ fprintf(stderr, "cannot enter: key %s\n",
+ item.data);
+ exit(1);
+ }
+ }
+
+ if ( --argc ) {
+ fp = fopen ( argv[0], "r");
+ i = 0;
+ while ( fgets(wp1, 8192, fp) &&
+ fgets(wp2, 8192, fp) &&
+ i++ < MAXWORDS) {
+ key.size = strlen(wp1);
+ stat = (dbp->del)(dbp, &key, 0);
+ if (stat) {
+ fprintf ( stderr, "Error retrieving %s\n", key.data );
+ exit(1);
+ }
+ }
+ fclose(fp);
+ }
+ (dbp->close)(dbp);
+ exit(0);
+}
--- /dev/null
+#!/bin/csh -f
+#
+# @(#)testit 8.1 (Berkeley) 6/4/93
+#
+
+echo ""
+echo "PAGE FILL "
+set name=WORDS
+ set i = 256
+ foreach j ( 11 14 21 )
+ thash4 $i $j 25000 65536 $name < $name
+ end
+ set i = 512
+ foreach j ( 21 28 43 )
+ thash4 $i $j 25000 65536 $name < $name
+ end
+ set i = 1024
+ foreach j ( 43 57 85 )
+ thash4 $i $j 25000 65536 $name < $name
+ end
+ set i = 2048
+ foreach j ( 85 114 171 )
+ thash4 $i $j 25000 65536 $name < $name
+ end
+ set i = 4096
+ foreach j ( 171 228 341 )
+ thash4 $i $j 25000 65536 $name < $name
+ end
+ set i = 8192
+ foreach j ( 341 455 683 )
+ thash4 $i $j 25000 65536 $name < $name
+ end
+ echo "PAGE FILL "
+ set i = 256
+ foreach j ( 11 14 21 )
+ echo "$i"_"$j"
+ tcreat3 $i $j 25000 $name < $name
+ tread2 65536 < $name
+ tverify $name < $name
+ tseq > /dev/null
+ tdel $i $j $name < $name
+ end
+ set i = 512
+ foreach j ( 21 28 43 )
+ echo "$i"_"$j"
+ tcreat3 $i $j 25000 $name < $name
+ tread2 65536 < $name
+ tverify $name < $name
+ tseq > /dev/null
+ tdel $i $j $name < $name
+ end
+ set i = 1024
+ foreach j ( 43 57 85 )
+ echo "$i"_"$j"
+ tcreat3 $i $j 25000 $name < $name
+ tread2 65536 < $name
+ tverify $name < $name
+ tseq > /dev/null
+ tdel $i $j $name < $name
+ end
+ set i = 2048
+ foreach j ( 85 114 171 )
+ echo "$i"_"$j"
+ tcreat3 $i $j 25000 $name < $name
+ tread2 65536 < $name
+ tverify $name < $name
+ tseq > /dev/null
+ tdel $i $j $name < $name
+ end
+ set i = 4096
+ foreach j ( 171 228 341 )
+ echo "$i"_"$j"
+ tcreat3 $i $j 25000 $name < $name
+ tread2 65536 < $name
+ tverify $name < $name
+ tseq > /dev/null
+ tdel $i $j $name < $name
+ end
+ set i = 8192
+ foreach j ( 341 455 683 )
+ echo "$i"_"$j"
+ tcreat3 $i $j 25000 $name < $name
+ tread2 65536 < $name
+ tverify $name < $name
+ tseq > /dev/null
+ tdel $i $j $name < $name
+ end
+set name=LONG.DATA
+ set i = 1024
+ foreach j ( 1 2 4 )
+ echo thash4 $i $j 600 65536 $name
+ thash4 $i $j 600 65536 $name < $name
+ end
+
+ set i = 2048
+ foreach j ( 1 2 4 )
+ echo thash4 $i $j 600 65536 $name
+ thash4 $i $j 600 65536 $name < $name
+ end
+ set i = 4096
+ foreach j ( 1 2 4 )
+ echo thash4 $i $j 600 65536 $name
+ thash4 $i $j 600 65536 $name < $name
+ end
+ set i = 8192
+ foreach j ( 2 4 8 )
+ echo thash4 $i $j 600 65536 $name
+ thash4 $i $j 600 65536 $name < $name
+ end
+ echo "PAGE FILL "
+ set i = 1024
+ foreach j ( 1 2 4 )
+ echo "$i"_"$j"
+ tcreat3 $i $j 600 $name < $name
+ tread2 65536 < $name
+ tverify $name < $name
+ tseq > /dev/null
+ tdel $i $j $name < $name
+ end
+ set i = 2048
+ foreach j ( 1 2 4 )
+ echo "$i"_"$j"
+ tcreat3 $i $j 600 $name < $name
+ tread2 65536 < $name
+ tverify $name < $name
+ tseq > /dev/null
+ tdel $i $j $name < $name
+ end
+ set i = 4096
+ foreach j ( 1 2 4 )
+ echo "$i"_"$j"
+ tcreat3 $i $j 600 $name < $name
+ tread2 65536 < $name
+ tverify $name < $name
+ tseq > /dev/null
+ tdel $i $j $name < $name
+ end
+ set i = 8192
+ foreach j ( 2 4 8 )
+ echo "$i"_"$j"
+ tcreat3 $i $j 600 $name < $name
+ tread2 65536 < $name
+ tverify $name < $name
+ tseq > /dev/null
+ tdel $i $j $name < $name
+ end
+driver2
--- /dev/null
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1991, 1993\n\
+ The Regents of the University of California. All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)thash4.c 8.1 (Berkeley) 6/4/93";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <sys/file.h>
+#include <sys/timeb.h>
+#include <stdio.h>
+#include <errno.h>
+#include <db.h>
+
+#define INITIAL 25000
+#define MAXWORDS 25000 /* # of elements in search table */
+
+/* Usage: thash pagesize fillfactor file */
+char wp1[8192];
+char wp2[8192];
+main(argc, argv)
+char **argv;
+{
+ DBT item, key, res;
+ DB *dbp;
+ HASHINFO ctl;
+ FILE *fp;
+ int stat;
+ time_t t;
+
+ int i = 0;
+
+ argv++;
+ ctl.hash = NULL;
+ ctl.bsize = atoi(*argv++);
+ ctl.ffactor = atoi(*argv++);
+ ctl.nelem = atoi(*argv++);
+ ctl.cachesize = atoi(*argv++);
+ ctl.lorder = 0;
+ if (!(dbp = dbopen( NULL, O_CREAT|O_RDWR, 0400, DB_HASH, &ctl))) {
+ /* create table */
+ fprintf(stderr, "cannot create: hash table size %d)\n",
+ INITIAL);
+ fprintf(stderr, "\terrno: %d\n", errno);
+ exit(1);
+ }
+
+ key.data = wp1;
+ item.data = wp2;
+ while ( fgets(wp1, 8192, stdin) &&
+ fgets(wp2, 8192, stdin) &&
+ i++ < MAXWORDS) {
+/*
+* put info in structure, and structure in the item
+*/
+ key.size = strlen(wp1);
+ item.size = strlen(wp2);
+
+/*
+ * enter key/data pair into the table
+ */
+ if ((dbp->put)(dbp, &key, &item, R_NOOVERWRITE) != NULL) {
+ fprintf(stderr, "cannot enter: key %s\n",
+ item.data);
+ fprintf(stderr, "\terrno: %d\n", errno);
+ exit(1);
+ }
+ }
+
+ if ( --argc ) {
+ fp = fopen ( argv[0], "r");
+ i = 0;
+ while ( fgets(wp1, 256, fp) &&
+ fgets(wp2, 8192, fp) &&
+ i++ < MAXWORDS) {
+
+ key.size = strlen(wp1);
+ stat = (dbp->get)(dbp, &key, &res, 0);
+ if (stat < 0 ) {
+ fprintf ( stderr, "Error retrieving %s\n", key.data );
+ fprintf(stderr, "\terrno: %d\n", errno);
+ exit(1);
+ } else if ( stat > 0 ) {
+ fprintf ( stderr, "%s not found\n", key.data );
+ fprintf(stderr, "\terrno: %d\n", errno);
+ exit(1);
+ }
+ }
+ fclose(fp);
+ }
+ dbp->close(dbp);
+ exit(0);
+}
--- /dev/null
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1991, 1993\n\
+ The Regents of the University of California. All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)tread2.c 8.1 (Berkeley) 6/4/93";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <sys/file.h>
+#include <stdio.h>
+#include <db.h>
+
+#define INITIAL 25000
+#define MAXWORDS 25000 /* # of elements in search table */
+
+typedef struct { /* info to be stored */
+ int num, siz;
+} info;
+
+char wp1[8192];
+char wp2[8192];
+main(argc, argv)
+char **argv;
+{
+ DBT item, key, res;
+ DB *dbp;
+ HASHINFO ctl;
+ int stat;
+
+ int i = 0;
+
+ ctl.nelem = INITIAL;
+ ctl.hash = NULL;
+ ctl.bsize = 64;
+ ctl.ffactor = 1;
+ ctl.cachesize = atoi(*argv++);
+ ctl.lorder = 0;
+ if (!(dbp = dbopen( "hashtest", O_RDONLY, 0400, DB_HASH, &ctl))) {
+ /* create table */
+ fprintf(stderr, "cannot open: hash table\n" );
+ exit(1);
+ }
+
+ key.data = wp1;
+ item.data = wp2;
+ while ( fgets(wp1, 8192, stdin) &&
+ fgets(wp2, 8192, stdin) &&
+ i++ < MAXWORDS) {
+/*
+* put info in structure, and structure in the item
+*/
+ key.size = strlen(wp1);
+ item.size = strlen(wp2);
+
+ stat = (dbp->get)(dbp, &key, &res,0);
+ if (stat < 0) {
+ fprintf ( stderr, "Error retrieving %s\n", key.data );
+ exit(1);
+ } else if ( stat > 0 ) {
+ fprintf ( stderr, "%s not found\n", key.data );
+ exit(1);
+ }
+ }
+ (dbp->close)(dbp);
+ exit(0);
+}
--- /dev/null
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1991, 1993\n\
+ The Regents of the University of California. All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)tseq.c 8.1 (Berkeley) 6/4/93";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <sys/file.h>
+#include <stdio.h>
+#include <db.h>
+
+#define INITIAL 25000
+#define MAXWORDS 25000 /* # of elements in search table */
+
+
+char wp[8192];
+char cp[8192];
+main(argc, argv)
+char **argv;
+{
+ DBT item, key, res;
+ DB *dbp;
+ FILE *fp;
+ int stat;
+
+ if (!(dbp = dbopen( "hashtest", O_RDONLY, 0400, DB_HASH, NULL))) {
+ /* create table */
+ fprintf(stderr, "cannot open: hash table\n" );
+ exit(1);
+ }
+
+/*
+* put info in structure, and structure in the item
+*/
+ for ( stat = (dbp->seq) (dbp, &res, &item, 1 );
+ stat == 0;
+ stat = (dbp->seq) (dbp, &res, &item, 0 ) ) {
+
+ bcopy ( res.data, wp, res.size );
+ wp[res.size] = 0;
+ bcopy ( item.data, cp, item.size );
+ cp[item.size] = 0;
+
+ printf ( "%s %s\n", wp, cp );
+ }
+ (dbp->close)(dbp);
+ exit(0);
+}
--- /dev/null
+/*-
+ * Copyright (c) 1991, 1993
+ * The Regents of the University of California. All rights reserved.
+ *
+ * This code is derived from software contributed to Berkeley by
+ * Margo Seltzer.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ * must display the following acknowledgement:
+ * This product includes software developed by the University of
+ * California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char copyright[] =
+"@(#) Copyright (c) 1991, 1993\n\
+ The Regents of the University of California. All rights reserved.\n";
+#endif /* not lint */
+
+#ifndef lint
+static char sccsid[] = "@(#)tverify.c 8.1 (Berkeley) 6/4/93";
+#endif /* not lint */
+
+#include <sys/types.h>
+#include <sys/file.h>
+#include <stdio.h>
+#include <db.h>
+
+#define INITIAL 25000
+#define MAXWORDS 25000 /* # of elements in search table */
+
+typedef struct { /* info to be stored */
+ int num, siz;
+} info;
+
+char wp1[8192];
+char wp2[8192];
+main(argc, argv)
+char **argv;
+{
+ DBT key, res;
+ DB *dbp;
+ HASHINFO ctl;
+ int trash;
+ int stat;
+
+ int i = 0;
+
+ ctl.nelem = INITIAL;
+ ctl.hash = NULL;
+ ctl.bsize = 64;
+ ctl.ffactor = 1;
+ ctl.cachesize = 1024 * 1024; /* 1 MEG */
+ ctl.lorder = 0;
+ if (!(dbp = dbopen( "hashtest", O_RDONLY, 0400, DB_HASH, &ctl))) {
+ /* create table */
+ fprintf(stderr, "cannot open: hash table\n" );
+ exit(1);
+ }
+
+ key.data = wp1;
+ while ( fgets(wp1, 8192, stdin) &&
+ fgets(wp2, 8192, stdin) &&
+ i++ < MAXWORDS) {
+/*
+* put info in structure, and structure in the item
+*/
+ key.size = strlen(wp1);
+
+ stat = (dbp->get)(dbp, &key, &res,0);
+ if (stat < 0) {
+ fprintf ( stderr, "Error retrieving %s\n", key.data );
+ exit(1);
+ } else if ( stat > 0 ) {
+ fprintf ( stderr, "%s not found\n", key.data );
+ exit(1);
+ }
+ if ( memcmp ( res.data, wp2, res.size ) ) {
+ fprintf ( stderr, "data for %s is incorrect. Data was %s. Should have been %s\n", key.data, res.data, wp2 );
+ }
+ }
+ (dbp->close)(dbp);
+ exit(0);
+}
--- /dev/null
+#!/bin/sh -
+#
+# @(#)run.test 8.10 (Berkeley) 7/26/94
+#
+
+# db regression tests
+main()
+{
+
+ PROG=./dbtest
+ TMP1=t1
+ TMP2=t2
+ TMP3=t3
+
+ if [ -f /usr/share/dict/words ]; then
+ DICT=/usr/share/dict/words
+ elif [ -f /usr/dict/words ]; then
+ DICT=/usr/dict/words
+ else
+ echo 'run.test: no dictionary'
+ exit 1
+ fi
+
+ if [ $# -eq 0 ]; then
+ for t in 1 2 3 4 5 6 7 8 9 10 11 12 13 20; do
+ test$t
+ done
+ else
+ while [ $# -gt 0 ]
+ do case "$1" in
+ test*)
+ $1;;
+ [0-9]*)
+ test$1;;
+ btree)
+ for t in 1 2 3 7 8 9 10 12 13; do
+ test$t
+ done;;
+ hash)
+ for t in 1 2 3 8 13 20; do
+ test$t
+ done;;
+ recno)
+ for t in 1 2 3 4 5 6 7 10 11; do
+ test$t
+ done;;
+ *)
+ echo "run.test: unknown test $1"
+ echo "usage: run.test test# | type"
+ exit 1
+ esac
+ shift
+ done
+ fi
+ rm -f $TMP1 $TMP2 $TMP3
+ exit 0
+}
+
+# Take the first hundred entries in the dictionary, and make them
+# be key/data pairs.
+test1()
+{
+ echo "Test 1: btree, hash: small key, small data pairs"
+ sed 200q $DICT > $TMP1
+ for type in btree hash; do
+ rm -f $TMP2 $TMP3
+ for i in `sed 200q $DICT`; do
+ echo p
+ echo k$i
+ echo d$i
+ echo g
+ echo k$i
+ done > $TMP2
+ $PROG -o $TMP3 $type $TMP2
+ if (cmp -s $TMP1 $TMP3) ; then :
+ else
+ echo "test1: type $type: failed"
+ exit 1
+ fi
+ done
+ echo "Test 1: recno: small key, small data pairs"
+ rm -f $TMP2 $TMP3
+ sed 200q $DICT |
+ awk '{
+ ++i;
+ printf("p\nk%d\nd%s\ng\nk%d\n", i, $0, i);
+ }' > $TMP2
+ $PROG -o $TMP3 recno $TMP2
+ if (cmp -s $TMP1 $TMP3) ; then :
+ else
+ echo "test1: type recno: failed"
+ exit 1
+ fi
+}
+
+# Take the first 200 entries in the dictionary, and give them
+# each a medium size data entry.
+test2()
+{
+ echo "Test 2: btree, hash: small key, medium data pairs"
+ mdata=abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz
+ echo $mdata |
+ awk '{ for (i = 1; i < 201; ++i) print $0 }' > $TMP1
+ for type in hash btree; do
+ rm -f $TMP2 $TMP3
+ for i in `sed 200q $DICT`; do
+ echo p
+ echo k$i
+ echo d$mdata
+ echo g
+ echo k$i
+ done > $TMP2
+ $PROG -o $TMP3 $type $TMP2
+ if (cmp -s $TMP1 $TMP3) ; then :
+ else
+ echo "test2: type $type: failed"
+ exit 1
+ fi
+ done
+ echo "Test 2: recno: small key, medium data pairs"
+ rm -f $TMP2 $TMP3
+ echo $mdata |
+ awk '{ for (i = 1; i < 201; ++i)
+ printf("p\nk%d\nd%s\ng\nk%d\n", i, $0, i);
+ }' > $TMP2
+ $PROG -o $TMP3 recno $TMP2
+ if (cmp -s $TMP1 $TMP3) ; then :
+ else
+ echo "test2: type recno: failed"
+ exit 1
+ fi
+}
+
+# Insert the programs in /bin with their paths as their keys.
+test3()
+{
+ echo "Test 3: hash: small key, big data pairs"
+ rm -f $TMP1
+ (find /bin -type f -print | xargs cat) > $TMP1
+ for type in hash; do
+ rm -f $TMP2 $TMP3
+ for i in `find /bin -type f -print`; do
+ echo p
+ echo k$i
+ echo D$i
+ echo g
+ echo k$i
+ done > $TMP2
+ $PROG -o $TMP3 $type $TMP2
+ if (cmp -s $TMP1 $TMP3) ; then :
+ else
+ echo "test3: $type: failed"
+ exit 1
+ fi
+ done
+ echo "Test 3: btree: small key, big data pairs"
+ for psize in 512 16384 65536; do
+ echo " page size $psize"
+ for type in btree; do
+ rm -f $TMP2 $TMP3
+ for i in `find /bin -type f -print`; do
+ echo p
+ echo k$i
+ echo D$i
+ echo g
+ echo k$i
+ done > $TMP2
+ $PROG -i psize=$psize -o $TMP3 $type $TMP2
+ if (cmp -s $TMP1 $TMP3) ; then :
+ else
+ echo "test3: $type: page size $psize: failed"
+ exit 1
+ fi
+ done
+ done
+ echo "Test 3: recno: big data pairs"
+ rm -f $TMP2 $TMP3
+ find /bin -type f -print |
+ awk '{
+ ++i;
+ printf("p\nk%d\nD%s\ng\nk%d\n", i, $0, i);
+ }' > $TMP2
+ for psize in 512 16384 65536; do
+ echo " page size $psize"
+ $PROG -i psize=$psize -o $TMP3 recno $TMP2
+ if (cmp -s $TMP1 $TMP3) ; then :
+ else
+ echo "test3: recno: page size $psize: failed"
+ exit 1
+ fi
+ done
+}
+
+# Do random recno entries.
+test4()
+{
+ echo "Test 4: recno: random entries"
+ echo "abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg" |
+ awk '{
+ for (i = 37; i <= 37 + 88 * 17; i += 17) {
+ if (i % 41)
+ s = substr($0, 1, i % 41);
+ else
+ s = substr($0, 1);
+ printf("input key %d: %s\n", i, s);
+ }
+ for (i = 1; i <= 15; ++i) {
+ if (i % 41)
+ s = substr($0, 1, i % 41);
+ else
+ s = substr($0, 1);
+ printf("input key %d: %s\n", i, s);
+ }
+ for (i = 19234; i <= 19234 + 61 * 27; i += 27) {
+ if (i % 41)
+ s = substr($0, 1, i % 41);
+ else
+ s = substr($0, 1);
+ printf("input key %d: %s\n", i, s);
+ }
+ exit
+ }' > $TMP1
+ rm -f $TMP2 $TMP3
+ cat $TMP1 |
+ awk 'BEGIN {
+ i = 37;
+ incr = 17;
+ }
+ {
+ printf("p\nk%d\nd%s\n", i, $0);
+ if (i == 19234 + 61 * 27)
+ exit;
+ if (i == 37 + 88 * 17) {
+ i = 1;
+ incr = 1;
+ } else if (i == 15) {
+ i = 19234;
+ incr = 27;
+ } else
+ i += incr;
+ }
+ END {
+ for (i = 37; i <= 37 + 88 * 17; i += 17)
+ printf("g\nk%d\n", i);
+ for (i = 1; i <= 15; ++i)
+ printf("g\nk%d\n", i);
+ for (i = 19234; i <= 19234 + 61 * 27; i += 27)
+ printf("g\nk%d\n", i);
+ }' > $TMP2
+ $PROG -o $TMP3 recno $TMP2
+ if (cmp -s $TMP1 $TMP3) ; then :
+ else
+ echo "test4: type recno: failed"
+ exit 1
+ fi
+}
+
+# Do reverse order recno entries.
+test5()
+{
+ echo "Test 5: recno: reverse order entries"
+ echo "abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg" |
+ awk ' {
+ for (i = 1500; i; --i) {
+ if (i % 34)
+ s = substr($0, 1, i % 34);
+ else
+ s = substr($0, 1);
+ printf("input key %d: %s\n", i, s);
+ }
+ exit;
+ }' > $TMP1
+ rm -f $TMP2 $TMP3
+ cat $TMP1 |
+ awk 'BEGIN {
+ i = 1500;
+ }
+ {
+ printf("p\nk%d\nd%s\n", i, $0);
+ --i;
+ }
+ END {
+ for (i = 1500; i; --i)
+ printf("g\nk%d\n", i);
+ }' > $TMP2
+ $PROG -o $TMP3 recno $TMP2
+ if (cmp -s $TMP1 $TMP3) ; then :
+ else
+ echo "test5: type recno: failed"
+ exit 1
+ fi
+}
+
+# Do alternating order recno entries.
+test6()
+{
+ echo "Test 6: recno: alternating order entries"
+ echo "abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg" |
+ awk ' {
+ for (i = 1; i < 1200; i += 2) {
+ if (i % 34)
+ s = substr($0, 1, i % 34);
+ else
+ s = substr($0, 1);
+ printf("input key %d: %s\n", i, s);
+ }
+ for (i = 2; i < 1200; i += 2) {
+ if (i % 34)
+ s = substr($0, 1, i % 34);
+ else
+ s = substr($0, 1);
+ printf("input key %d: %s\n", i, s);
+ }
+ exit;
+ }' > $TMP1
+ rm -f $TMP2 $TMP3
+ cat $TMP1 |
+ awk 'BEGIN {
+ i = 1;
+ even = 0;
+ }
+ {
+ printf("p\nk%d\nd%s\n", i, $0);
+ i += 2;
+ if (i >= 1200) {
+ if (even == 1)
+ exit;
+ even = 1;
+ i = 2;
+ }
+ }
+ END {
+ for (i = 1; i < 1200; ++i)
+ printf("g\nk%d\n", i);
+ }' > $TMP2
+ $PROG -o $TMP3 recno $TMP2
+ sort -o $TMP1 $TMP1
+ sort -o $TMP3 $TMP3
+ if (cmp -s $TMP1 $TMP3) ; then :
+ else
+ echo "test6: type recno: failed"
+ exit 1
+ fi
+}
+
+# Delete cursor record
+test7()
+{
+ echo "Test 7: btree, recno: delete cursor record"
+ echo "abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg" |
+ awk '{
+ for (i = 1; i <= 120; ++i)
+ printf("%05d: input key %d: %s\n", i, i, $0);
+ printf("%05d: input key %d: %s\n", 120, 120, $0);
+ printf("seq failed, no such key\n");
+ printf("%05d: input key %d: %s\n", 1, 1, $0);
+ printf("%05d: input key %d: %s\n", 2, 2, $0);
+ exit;
+ }' > $TMP1
+ rm -f $TMP2 $TMP3
+
+ for type in btree recno; do
+ cat $TMP1 |
+ awk '{
+ if (i == 120)
+ exit;
+ printf("p\nk%d\nd%s\n", ++i, $0);
+ }
+ END {
+ printf("fR_NEXT\n");
+ for (i = 1; i <= 120; ++i)
+ printf("s\n");
+ printf("fR_CURSOR\ns\nk120\n");
+ printf("r\n");
+ printf("fR_NEXT\ns\n");
+ printf("fR_CURSOR\ns\nk1\n");
+ printf("r\n");
+ printf("fR_FIRST\ns\n");
+ }' > $TMP2
+ $PROG -o $TMP3 recno $TMP2
+ if (cmp -s $TMP1 $TMP3) ; then :
+ else
+ echo "test7: type $type: failed"
+ exit 1
+ fi
+ done
+}
+
+# Make sure that overflow pages are reused.
+test8()
+{
+ echo "Test 8: btree, hash: repeated small key, big data pairs"
+ rm -f $TMP1
+ echo "" |
+ awk 'BEGIN {
+ for (i = 1; i <= 10; ++i) {
+ printf("p\nkkey1\nD/bin/sh\n");
+ printf("p\nkkey2\nD/bin/csh\n");
+ if (i % 8 == 0) {
+ printf("c\nkkey2\nD/bin/csh\n");
+ printf("c\nkkey1\nD/bin/sh\n");
+ printf("e\t%d of 10 (comparison)\n", i);
+ } else
+ printf("e\t%d of 10 \n", i);
+ printf("r\nkkey1\nr\nkkey2\n");
+ }
+ }' > $TMP1
+ $PROG btree $TMP1
+# $PROG hash $TMP1
+ # No explicit test for success.
+}
+
+# Test btree duplicate keys
+test9()
+{
+ echo "Test 9: btree: duplicate keys"
+ echo "abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg" |
+ awk '{
+ for (i = 1; i <= 543; ++i)
+ printf("%05d: input key %d: %s\n", i, i, $0);
+ exit;
+ }' > $TMP1
+ rm -f $TMP2 $TMP3
+
+ for type in btree; do
+ cat $TMP1 |
+ awk '{
+ if (i++ % 2)
+ printf("p\nkduplicatekey\nd%s\n", $0);
+ else
+ printf("p\nkunique%dkey\nd%s\n", i, $0);
+ }
+ END {
+ printf("o\n");
+ }' > $TMP2
+ $PROG -iflags=1 -o $TMP3 $type $TMP2
+ sort -o $TMP3 $TMP3
+ if (cmp -s $TMP1 $TMP3) ; then :
+ else
+ echo "test9: type $type: failed"
+ exit 1
+ fi
+ done
+}
+
+# Test use of cursor flags without initialization
+test10()
+{
+ echo "Test 10: btree, recno: test cursor flag use"
+ echo "abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg" |
+ awk '{
+ for (i = 1; i <= 20; ++i)
+ printf("%05d: input key %d: %s\n", i, i, $0);
+ exit;
+ }' > $TMP1
+ rm -f $TMP2 $TMP3
+
+ # Test that R_CURSOR doesn't succeed before cursor initialized
+ for type in btree recno; do
+ cat $TMP1 |
+ awk '{
+ if (i == 10)
+ exit;
+ printf("p\nk%d\nd%s\n", ++i, $0);
+ }
+ END {
+ printf("fR_CURSOR\nr\n");
+ printf("eR_CURSOR SHOULD HAVE FAILED\n");
+ }' > $TMP2
+ $PROG -o $TMP3 $type $TMP2 > /dev/null 2>&1
+ if [ -s $TMP3 ] ; then
+ echo "Test 10: delete: R_CURSOR SHOULD HAVE FAILED"
+ exit 1
+ fi
+ done
+ for type in btree recno; do
+ cat $TMP1 |
+ awk '{
+ if (i == 10)
+ exit;
+ printf("p\nk%d\nd%s\n", ++i, $0);
+ }
+ END {
+ printf("fR_CURSOR\np\nk1\ndsome data\n");
+ printf("eR_CURSOR SHOULD HAVE FAILED\n");
+ }' > $TMP2
+ $PROG -o $TMP3 $type $TMP2 > /dev/null 2>&1
+ if [ -s $TMP3 ] ; then
+ echo "Test 10: put: R_CURSOR SHOULD HAVE FAILED"
+ exit 1
+ fi
+ done
+}
+
+# Test insert in reverse order.
+test11()
+{
+ echo "Test 11: recno: reverse order insert"
+ echo "abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg" |
+ awk '{
+ for (i = 1; i <= 779; ++i)
+ printf("%05d: input key %d: %s\n", i, i, $0);
+ exit;
+ }' > $TMP1
+ rm -f $TMP2 $TMP3
+
+ for type in recno; do
+ cat $TMP1 |
+ awk '{
+ if (i == 0) {
+ i = 1;
+ printf("p\nk1\nd%s\n", $0);
+ printf("%s\n", "fR_IBEFORE");
+ } else
+ printf("p\nk1\nd%s\n", $0);
+ }
+ END {
+ printf("or\n");
+ }' > $TMP2
+ $PROG -o $TMP3 $type $TMP2
+ if (cmp -s $TMP1 $TMP3) ; then :
+ else
+ echo "test11: type $type: failed"
+ exit 1
+ fi
+ done
+}
+
+# Take the first 20000 entries in the dictionary, reverse them, and give
+# them each a small size data entry. Use a small page size to make sure
+# the btree split code gets hammered.
+test12()
+{
+ echo "Test 12: btree: lots of keys, small page size"
+ mdata=abcdefghijklmnopqrstuvwxy
+ echo $mdata |
+ awk '{ for (i = 1; i < 20001; ++i) print $0 }' > $TMP1
+ for type in btree; do
+ rm -f $TMP2 $TMP3
+ for i in `sed 20000q $DICT | rev`; do
+ echo p
+ echo k$i
+ echo d$mdata
+ echo g
+ echo k$i
+ done > $TMP2
+ $PROG -i psize=512 -o $TMP3 $type $TMP2
+ if (cmp -s $TMP1 $TMP3) ; then :
+ else
+ echo "test12: type $type: failed"
+ exit 1
+ fi
+ done
+}
+
+# Test different byte orders.
+test13()
+{
+ echo "Test 13: btree, hash: differing byte orders"
+ sed 50q $DICT > $TMP1
+ for order in 1234 4321; do
+ for type in btree hash; do
+ rm -f byte.file $TMP2 $TMP3
+ for i in `sed 50q $DICT`; do
+ echo p
+ echo k$i
+ echo d$i
+ echo g
+ echo k$i
+ done > $TMP2
+ $PROG -ilorder=$order -f byte.file -o $TMP3 $type $TMP2
+ if (cmp -s $TMP1 $TMP3) ; then :
+ else
+ echo "test13: $type/$order put failed"
+ exit 1
+ fi
+ for i in `sed 50q $DICT`; do
+ echo g
+ echo k$i
+ done > $TMP2
+ $PROG -s \
+ -ilorder=$order -f byte.file -o $TMP3 $type $TMP2
+ if (cmp -s $TMP1 $TMP3) ; then :
+ else
+ echo "test13: $type/$order get failed"
+ exit 1
+ fi
+ done
+ done
+ rm -f byte.file
+}
+
+# Try a variety of bucketsizes and fill factors for hashing
+test20()
+{
+ echo\
+ "Test 20: hash: bucketsize, fill factor; nelem 25000 cachesize 65536"
+ echo "abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg" |
+ awk '{
+ for (i = 1; i <= 10000; ++i) {
+ if (i % 34)
+ s = substr($0, 1, i % 34);
+ else
+ s = substr($0, 1);
+ printf("%s\n", s);
+ }
+ exit;
+ }' > $TMP1
+ sed 10000q $DICT |
+ awk 'BEGIN {
+ ds="abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg abcdefg"
+ }
+ {
+ if (++i % 34)
+ s = substr(ds, 1, i % 34);
+ else
+ s = substr(ds, 1);
+ printf("p\nk%s\nd%s\n", $0, s);
+ }' > $TMP2
+ sed 10000q $DICT |
+ awk '{
+ ++i;
+ printf("g\nk%s\n", $0);
+ }' >> $TMP2
+ bsize=256
+ for ffactor in 11 14 21; do
+ echo " bucketsize $bsize, fill factor $ffactor"
+ $PROG -o$TMP3 \
+ -ibsize=$bsize,ffactor=$ffactor,nelem=25000,cachesize=65536\
+ hash $TMP2
+ if (cmp -s $TMP1 $TMP3) ; then :
+ else
+ echo "test20: type hash:\
+bsize=$bsize ffactor=$ffactor nelem=25000 cachesize=65536 failed"
+ exit 1
+ fi
+ done
+ bsize=512
+ for ffactor in 21 28 43; do
+ echo " bucketsize $bsize, fill factor $ffactor"
+ $PROG -o$TMP3 \
+ -ibsize=$bsize,ffactor=$ffactor,nelem=25000,cachesize=65536\
+ hash $TMP2
+ if (cmp -s $TMP1 $TMP3) ; then :
+ else
+ echo "test20: type hash:\
+bsize=$bsize ffactor=$ffactor nelem=25000 cachesize=65536 failed"
+ exit 1
+ fi
+ done
+ bsize=1024
+ for ffactor in 43 57 85; do
+ echo " bucketsize $bsize, fill factor $ffactor"
+ $PROG -o$TMP3 \
+ -ibsize=$bsize,ffactor=$ffactor,nelem=25000,cachesize=65536\
+ hash $TMP2
+ if (cmp -s $TMP1 $TMP3) ; then :
+ else
+ echo "test20: type hash:\
+bsize=$bsize ffactor=$ffactor nelem=25000 cachesize=65536 failed"
+ exit 1
+ fi
+ done
+ bsize=2048
+ for ffactor in 85 114 171; do
+ echo " bucketsize $bsize, fill factor $ffactor"
+ $PROG -o$TMP3 \
+ -ibsize=$bsize,ffactor=$ffactor,nelem=25000,cachesize=65536\
+ hash $TMP2
+ if (cmp -s $TMP1 $TMP3) ; then :
+ else
+ echo "test20: type hash:\
+bsize=$bsize ffactor=$ffactor nelem=25000 cachesize=65536 failed"
+ exit 1
+ fi
+ done
+ bsize=4096
+ for ffactor in 171 228 341; do
+ echo " bucketsize $bsize, fill factor $ffactor"
+ $PROG -o$TMP3 \
+ -ibsize=$bsize,ffactor=$ffactor,nelem=25000,cachesize=65536\
+ hash $TMP2
+ if (cmp -s $TMP1 $TMP3) ; then :
+ else
+ echo "test20: type hash:\
+bsize=$bsize ffactor=$ffactor nelem=25000 cachesize=65536 failed"
+ exit 1
+ fi
+ done
+ bsize=8192
+ for ffactor in 341 455 683; do
+ echo " bucketsize $bsize, fill factor $ffactor"
+ $PROG -o$TMP3 \
+ -ibsize=$bsize,ffactor=$ffactor,nelem=25000,cachesize=65536\
+ hash $TMP2
+ if (cmp -s $TMP1 $TMP3) ; then :
+ else
+ echo "test20: type hash:\
+bsize=$bsize ffactor=$ffactor nelem=25000 cachesize=65536 failed"
+ exit 1
+ fi
+ done
+}
+
+main $*
projects / platform / upstream / libdb.git / commitdiff