+1998-07-31 17:59 Ulrich Drepper <drepper@cygnus.com>
+
+ * sysdeps/unix/sysv/linux/Makefile [subdir==misc] (sysdep_routines):
+ Add sys_setresuid.
+
+1998-07-30 Mark Kettenis <kettenis@phys.uva.nl>
+
+ * sysdeps/unix/sysv/linux/syscalls.list: Add __syscall_setresuid
+ as real name for system call and make setresuid a weak alias. Set
+ caller to seteuid.
+ * sysdeps/unix/sysv/linux/seteuid.c (seteuid): Implement using
+ `setresuid' syscall if availble. Fixes problems with sendmail
+ which expects `seteuid' to not set the saved user ID.
+
+1998-07-30 20:09 -0400 Zack Weinberg <zack@rabi.phys.columbia.edu>
+
+ * time/tzset.c (__tzstring): Get rid of excessive cleverness
+ which was causing stack corruption.
+
+1998-07-31 16:41 -0400 Zack Weinberg <zack@rabi.phys.columbia.edu>
+
+ * argp/argp-fmtstream.c (__argp_fmtstream_update): Correct
+ off-by-one in wordwrap algorithm when there' a space at the
+ beginning of the buffer.
+
+1998-07-31 15:45 Ulrich Drepper <drepper@cygnus.com>
+
+ * Makerules (LDLIBS-c.so): Extend value instead of overwriting it.
+
1998-07-31 11:10 Ulrich Drepper <drepper@cygnus.com>
* elf/elf.h: Add lots of new symbols from Irix and Solaris.
# since we define our own `.init' section specially.
LDFLAGS-c.so = -nostdlib -nostartfiles
# But we still want to link libc.so against $(gnulib).
-LDLIBS-c.so = $(gnulib)
+LDLIBS-c.so += $(gnulib)
# Give libc.so an entry point and make it directly runnable itself.
LDFLAGS-c.so += -e __libc_main
# Pre-link the objects of libc_pic.a so that we can locally resolve
if (nextline > buf)
{
/* Swallow separating blanks. */
- if (p > buf)
+ if (p >= buf)
do
--p;
- while (p > buf && isblank (*p));
+ while (p >= buf && isblank (*p));
nl = p + 1; /* The newline will replace the first blank. */
}
else
endif
ifeq ($(subdir),misc)
-sysdep_routines += sysctl clone llseek getresuid getresgid
+sysdep_routines += sysctl clone llseek getresuid getresgid sys_setresuid
sysdep_headers += sys/mount.h sys/acct.h sys/sysctl.h sys/mtio.h \
sys/io.h sys/klog.h sys/kdaemon.h \
-#include <sysdeps/unix/bsd/seteuid.c>
+/* Copyright (C) 1998 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <errno.h>
+#include <sys/syscall.h>
+#include <sys/types.h>
+#include <unistd.h>
+
+#ifdef __NR_setresuid
+
+extern int __syscall_setresuid (uid_t ruid, uid_t euid, uid_t suid);
+
+int
+seteuid (uid_t uid)
+{
+ int result;
+
+ if (uid == (uid_t) ~0)
+ {
+ __set_errno (EINVAL);
+ return -1;
+ }
+
+ /* First try the syscall. */
+ result = __syscall_setresuid (-1, uid, -1);
+ if (result == -1 && errno == ENOSYS)
+ /* No system call available. Use emulation. This may not work
+ since `setreuid' also sets the saved user ID when UID is not
+ equal to the real user ID, making it impossible to switch back. */
+ result = __setreuid (-1, uid);
+
+ return result;
+}
+#else
+# include <sysdeps/unix/bsd/seteuid.c>
+#endif
setfsuid EXTRA setfsuid 1 setfsuid
setpgid - setpgid 2 __setpgid setpgid
setresgid EXTRA setresgid 3 setresgid
-setresuid EXTRA setresuid 3 setresuid
sigaltstack - sigaltstack 2 __sigaltstack sigaltstack
sys_fstat fxstat fstat 2 __syscall_fstat
sys_lstat lxstat lstat 2 __syscall_lstat
sys_mknod xmknod mknod 3 __syscall_mknod
sys_readv readv readv 3 __syscall_readv
+sys_setresuid EXTRA setresuid 3 __syscall_setresuid
sys_stat xstat stat 2 __syscall_stat
sys_writev writev writev 3 __syscall_writev
sysinfo EXTRA sysinfo 1 sysinfo
internal_function;
static void tzset_internal __P ((int always)) internal_function;
\f
-/* Header for a list of buffers containing time zone strings. */
-struct tzstring_head
+/* List of buffers containing time zone strings. */
+struct tzstring_l
{
- struct tzstring_head *next;
- /* The buffer itself immediately follows the header.
- The buffer contains zero or more (possibly overlapping) strings.
- The last string is followed by 2 '\0's instead of the usual 1. */
+ struct tzstring_l *next;
+ size_t len; /* strlen(data) - doesn't count terminating NUL! */
+ char data[0];
};
-/* First in a list of buffers containing time zone strings.
- All the buffers but the last are read-only. */
-static struct
-{
- struct tzstring_head head;
- char data[48];
-} tzstring_list;
-
-/* Size of the last buffer in the list, not counting its header. */
-static size_t tzstring_last_buffer_size = sizeof tzstring_list.data;
+struct tzstring_l *tzstring_list;
-/* Allocate a time zone string with given contents.
- The string will never be moved or deallocated.
- However, its contents may be shared with other such strings. */
+/* Allocate a permanent home for S. It will never be moved or deallocated,
+ but may share space with other strings.
+ Don't modify the returned string. */
char *
-__tzstring (string)
- const char *string;
+__tzstring (const char *s)
{
- struct tzstring_head *h;
- size_t needed;
char *p;
+ struct tzstring_l *t, *u, *new;
+ size_t len = strlen(s);
- /* Look through time zone string list for a duplicate of this one. */
- for (h = &tzstring_list.head; ; h = h->next)
- {
- for (p = (char *) (h + 1); p[0] | p[1]; ++p)
- if (strcmp (p, string) == 0)
+ /* Walk the list and look for a match. If this string is the same
+ as the end of an already-allocated string, it can share space. */
+ for (u = t = tzstring_list; t; u = t, t = t->next)
+ if (len <= t->len)
+ {
+ p = &t->data[t->len - len];
+ if (strcmp (s, p) == 0)
return p;
- if (! h->next)
- break;
- }
+ }
- /* No duplicate was found. Copy to the end of this buffer if there's room;
- otherwise, append a large-enough new buffer to the list and use it. */
- ++p;
- needed = strlen (string) + 2; /* Need 2 trailing '\0's after last string. */
+ /* Not found; allocate a new buffer. */
+ new = malloc (sizeof (struct tzstring_l) + len + 1);
+ if (!new)
+ return NULL;
- if ((size_t) ((char *) (h + 1) + tzstring_last_buffer_size - p) < needed)
- {
- size_t buffer_size = tzstring_last_buffer_size;
- while ((buffer_size *= 2) < needed)
- continue;
- h = malloc (sizeof *h + buffer_size);
- if (h == NULL)
- return NULL;
- h->next = NULL;
- tzstring_last_buffer_size = buffer_size;
- p = (char *) (h + 1);
- }
+ new->next = NULL;
+ new->len = len;
+ strcpy (new->data, s);
+
+ if (u)
+ u->next = new;
+ else
+ tzstring_list = new;
- return strncpy (p, string, needed);
+ return new->data;
}
\f
static char *old_tz = NULL;
projects / external / glibc.git / commitdiff