1 /* O_*, F_*, FD_* bit values for Linux/PowerPC.
2 Copyright (C) 1995, 1996, 1997, 1998, 2000, 2003, 2004, 2006, 2007, 2009
3 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, write to the Free
18 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
22 # error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead."
25 #include <sys/types.h>
27 # include <bits/uio.h>
31 /* open/fcntl - O_SYNC is only implemented on blocks devices and on files
32 located on an ext2 file system */
33 #define O_ACCMODE 0003
37 #define O_CREAT 0100 /* not fcntl */
38 #define O_EXCL 0200 /* not fcntl */
39 #define O_NOCTTY 0400 /* not fcntl */
40 #define O_TRUNC 01000 /* not fcntl */
41 #define O_APPEND 02000
42 #define O_NONBLOCK 04000
43 #define O_NDELAY O_NONBLOCK
45 #define O_FSYNC O_SYNC
46 #define O_ASYNC 020000
49 # define O_DIRECT 0400000 /* Direct disk access. */
50 # define O_DIRECTORY 040000 /* Must be a directory. */
51 # define O_NOFOLLOW 0100000 /* Do not follow links. */
52 # define O_NOATIME 01000000 /* Do not set atime. */
53 # define O_CLOEXEC 02000000 /* Set close_on_exec. */
56 #ifdef __USE_LARGEFILE64
57 # define O_LARGEFILE 0200000
60 /* For now Linux has synchronisity options for data and read operations.
61 We define the symbols here but let them do the same as O_SYNC since
62 this is a superset. */
63 #if defined __USE_POSIX199309 || defined __USE_UNIX98
64 # define O_DSYNC O_SYNC /* Synchronize data. */
65 # define O_RSYNC O_SYNC /* Synchronize read operations. */
68 /* Values for the second argument to `fcntl'. */
69 #define F_DUPFD 0 /* Duplicate file descriptor. */
70 #define F_GETFD 1 /* Get file descriptor flags. */
71 #define F_SETFD 2 /* Set file descriptor flags. */
72 #define F_GETFL 3 /* Get file status flags. */
73 #define F_SETFL 4 /* Set file status flags. */
74 #ifndef __USE_FILE_OFFSET64
75 # define F_GETLK 5 /* Get record locking info. */
76 # define F_SETLK 6 /* Set record locking info (non-blocking). */
77 # define F_SETLKW 7 /* Set record locking info (blocking). */
79 # define F_GETLK F_GETLK64 /* Get record locking info. */
80 # define F_SETLK F_SETLK64 /* Set record locking info (non-blocking).*/
81 # define F_SETLKW F_SETLKW64 /* Set record locking info (blocking). */
83 #define F_GETLK64 12 /* Get record locking info. */
84 #define F_SETLK64 13 /* Set record locking info (non-blocking). */
85 #define F_SETLKW64 14 /* Set record locking info (blocking). */
87 #if defined __USE_BSD || defined __USE_UNIX98
88 # define F_SETOWN 8 /* Get owner (process receiving SIGIO). */
89 # define F_GETOWN 9 /* Set owner (process receiving SIGIO). */
93 # define F_SETSIG 10 /* Set number of signal to be sent. */
94 # define F_GETSIG 11 /* Get number of signal to be sent. */
95 # define F_SETOWN_EX 15 /* Get owner (thread receiving SIGIO). */
96 # define F_GETOWN_EX 16 /* Set owner (thread receiving SIGIO). */
100 # define F_SETLEASE 1024 /* Set a lease. */
101 # define F_GETLEASE 1025 /* Enquire what lease is active. */
102 # define F_NOTIFY 1026 /* Request notfications on a directory. */
103 # define F_DUPFD_CLOEXEC 1030 /* Duplicate file descriptor with
104 close-on-exit set. */
107 /* For F_[GET|SET]FD. */
108 #define FD_CLOEXEC 1 /* actually anything with low bit set goes */
110 /* For posix fcntl() and `l_type' field of a `struct flock' for lockf(). */
111 #define F_RDLCK 0 /* Read lock. */
112 #define F_WRLCK 1 /* Write lock. */
113 #define F_UNLCK 2 /* Remove lock. */
115 /* For old implementation of bsd flock(). */
116 #define F_EXLCK 4 /* or 3 */
117 #define F_SHLCK 8 /* or 4 */
120 /* Operations for bsd flock(), also used by the kernel implementation. */
121 # define LOCK_SH 1 /* shared lock */
122 # define LOCK_EX 2 /* exclusive lock */
123 # define LOCK_NB 4 /* or'd with one of the above to prevent
125 # define LOCK_UN 8 /* remove lock */
129 # define LOCK_MAND 32 /* This is a mandatory flock: */
130 # define LOCK_READ 64 /* ... which allows concurrent read operations. */
131 # define LOCK_WRITE 128 /* ... which allows concurrent write operations. */
132 # define LOCK_RW 192 /* ... Which allows concurrent read & write operations. */
136 /* Types of directory notifications that may be requested with F_NOTIFY. */
137 # define DN_ACCESS 0x00000001 /* File accessed. */
138 # define DN_MODIFY 0x00000002 /* File modified. */
139 # define DN_CREATE 0x00000004 /* File created. */
140 # define DN_DELETE 0x00000008 /* File removed. */
141 # define DN_RENAME 0x00000010 /* File renamed. */
142 # define DN_ATTRIB 0x00000020 /* File changed attibutes. */
143 # define DN_MULTISHOT 0x80000000 /* Don't remove notifier. */
148 short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */
149 short int l_whence; /* Where `l_start' is relative to (like `lseek'). */
150 #ifndef __USE_FILE_OFFSET64
151 __off_t l_start; /* Offset where the lock begins. */
152 __off_t l_len; /* Size of the locked area; zero means until EOF. */
154 __off64_t l_start; /* Offset where the lock begins. */
155 __off64_t l_len; /* Size of the locked area; zero means until EOF. */
157 __pid_t l_pid; /* Process holding the lock. */
160 #ifdef __USE_LARGEFILE64
163 short int l_type; /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK. */
164 short int l_whence; /* Where `l_start' is relative to (like `lseek'). */
165 __off64_t l_start; /* Offset where the lock begins. */
166 __off64_t l_len; /* Size of the locked area; zero means until EOF. */
167 __pid_t l_pid; /* Process holding the lock. */
175 F_OWNER_TID = 0, /* Kernel thread. */
176 F_OWNER_PID, /* Process. */
177 F_OWNER_GID /* Process group. */
180 /* Structure to use with F_GETOWN_EX and F_SETOWN_EX. */
183 enum __pid_type type; /* Owner type of ID. */
184 __pid_t pid; /* ID of owner. */
188 /* Define some more compatibility macros to be backward compatible with
189 BSD systems which did not managed to hide these kernel macros. */
191 # define FAPPEND O_APPEND
192 # define FFSYNC O_FSYNC
193 # define FASYNC O_ASYNC
194 # define FNONBLOCK O_NONBLOCK
195 # define FNDELAY O_NDELAY
196 #endif /* Use BSD. */
198 /* Advise to `posix_fadvise'. */
200 # define POSIX_FADV_NORMAL 0 /* No further special treatment. */
201 # define POSIX_FADV_RANDOM 1 /* Expect random page references. */
202 # define POSIX_FADV_SEQUENTIAL 2 /* Expect sequential page references. */
203 # define POSIX_FADV_WILLNEED 3 /* Will need these pages. */
204 # define POSIX_FADV_DONTNEED 4 /* Don't need these pages. */
205 # define POSIX_FADV_NOREUSE 5 /* Data will be accessed once. */
210 /* Flags for SYNC_FILE_RANGE. */
211 # define SYNC_FILE_RANGE_WAIT_BEFORE 1 /* Wait upon writeout of all pages
212 in the range before performing the
214 # define SYNC_FILE_RANGE_WRITE 2 /* Initiate writeout of all those
215 dirty pages in the range which are
216 not presently under writeback. */
217 # define SYNC_FILE_RANGE_WAIT_AFTER 4 /* Wait upon writeout of all pages in
218 the range after performing the
221 /* Flags for SPLICE and VMSPLICE. */
222 # define SPLICE_F_MOVE 1 /* Move pages instead of copying. */
223 # define SPLICE_F_NONBLOCK 2 /* Don't block on the pipe splicing
224 (but we may still block on the fd
225 we splice from/to). */
226 # define SPLICE_F_MORE 4 /* Expect more data. */
227 # define SPLICE_F_GIFT 8 /* Pages passed in are a gift. */
234 /* Provide kernel hint to read ahead. */
235 extern ssize_t readahead (int __fd, __off64_t __offset, size_t __count)
239 /* Selective file content synch'ing. */
240 extern int sync_file_range (int __fd, __off64_t __from, __off64_t __to,
241 unsigned int __flags);
244 /* Splice address range into a pipe. */
245 extern ssize_t vmsplice (int __fdout, const struct iovec *__iov,
246 size_t __count, unsigned int __flags);
248 /* Splice two files together. */
249 extern ssize_t splice (int __fdin, __off64_t *__offin, int __fdout,
250 __off64_t *__offout, size_t __len,
251 unsigned int __flags);
253 /* In-kernel implementation of tee for pipe buffers. */
254 extern ssize_t tee (int __fdin, int __fdout, size_t __len,
255 unsigned int __flags);
257 /* Reserve storage for the data of the file associated with FD. */
258 # ifndef __USE_FILE_OFFSET64
259 extern int fallocate (int __fd, int __mode, __off_t __offset, __off_t __len);
262 extern int __REDIRECT (fallocate, (int __fd, int __mode, __off64_t __offset,
266 # define fallocate fallocate64
269 # ifdef __USE_LARGEFILE64
270 extern int fallocate64 (int __fd, int __mode, __off64_t __offset,