1 /* Copyright (C) 1991,1992,1995-2002,2003 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, write to the Free
16 Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
20 * POSIX Standard: 5.6 File Characteristics <sys/stat.h>
28 #include <bits/types.h> /* For __mode_t and __dev_t. */
30 #if defined __USE_XOPEN || defined __USE_MISC
32 # define __need_time_t
35 # define __need_timespec
37 # include <time.h> /* For time_t resp. timespec. */
41 /* The Single Unix specification says that some more types are
43 # ifndef __dev_t_defined
44 typedef __dev_t dev_t
;
45 # define __dev_t_defined
48 # ifndef __gid_t_defined
49 typedef __gid_t gid_t
;
50 # define __gid_t_defined
53 # ifndef __ino_t_defined
54 # ifndef __USE_FILE_OFFSET64
55 typedef __ino_t ino_t
;
57 typedef __ino64_t ino_t
;
59 # define __ino_t_defined
62 # ifndef __mode_t_defined
63 typedef __mode_t mode_t
;
64 # define __mode_t_defined
67 # ifndef __nlink_t_defined
68 typedef __nlink_t nlink_t
;
69 # define __nlink_t_defined
72 # ifndef __off_t_defined
73 # ifndef __USE_FILE_OFFSET64
74 typedef __off_t off_t
;
76 typedef __off64_t off_t
;
78 # define __off_t_defined
81 # ifndef __uid_t_defined
82 typedef __uid_t uid_t
;
83 # define __uid_t_defined
88 # ifndef __blkcnt_t_defined
89 # ifndef __USE_FILE_OFFSET64
90 typedef __blkcnt_t blkcnt_t
;
92 typedef __blkcnt64_t blkcnt_t
;
94 # define __blkcnt_t_defined
97 # ifndef __blksize_t_defined
98 typedef __blksize_t blksize_t
;
99 # define __blksize_t_defined
105 #include <bits/stat.h>
107 #if defined __USE_BSD || defined __USE_MISC || defined __USE_XOPEN
108 # define S_IFMT __S_IFMT
109 # define S_IFDIR __S_IFDIR
110 # define S_IFCHR __S_IFCHR
111 # define S_IFBLK __S_IFBLK
112 # define S_IFREG __S_IFREG
114 # define S_IFIFO __S_IFIFO
117 # define S_IFLNK __S_IFLNK
119 # if (defined __USE_BSD || defined __USE_MISC || defined __USE_XOPEN2K) \
120 && defined __S_IFSOCK
121 # define S_IFSOCK __S_IFSOCK
125 /* Test macros for file types. */
127 #define __S_ISTYPE(mode, mask) (((mode) & __S_IFMT) == (mask))
129 #define S_ISDIR(mode) __S_ISTYPE((mode), __S_IFDIR)
130 #define S_ISCHR(mode) __S_ISTYPE((mode), __S_IFCHR)
131 #define S_ISBLK(mode) __S_ISTYPE((mode), __S_IFBLK)
132 #define S_ISREG(mode) __S_ISTYPE((mode), __S_IFREG)
134 # define S_ISFIFO(mode) __S_ISTYPE((mode), __S_IFIFO)
137 # define S_ISLNK(mode) __S_ISTYPE((mode), __S_IFLNK)
142 # define S_ISLNK(mode) 0
145 # define S_ISSOCK(mode) __S_ISTYPE((mode), __S_IFSOCK)
149 /* These are from POSIX.1b. If the objects are not implemented using separate
150 distinct file types, the macros always will evaluate to zero. Unlike the
151 other S_* macros the following three take a pointer to a `struct stat'
152 object as the argument. */
153 #ifdef __USE_POSIX199309
154 # define S_TYPEISMQ(buf) __S_TYPEISMQ(buf)
155 # define S_TYPEISSEM(buf) __S_TYPEISSEM(buf)
156 # define S_TYPEISSHM(buf) __S_TYPEISSHM(buf)
160 /* Protection bits. */
162 #define S_ISUID __S_ISUID /* Set user ID on execution. */
163 #define S_ISGID __S_ISGID /* Set group ID on execution. */
165 #if defined __USE_BSD || defined __USE_MISC || defined __USE_XOPEN
166 /* Save swapped text after use (sticky bit). This is pretty well obsolete. */
167 # define S_ISVTX __S_ISVTX
170 #define S_IRUSR __S_IREAD /* Read by owner. */
171 #define S_IWUSR __S_IWRITE /* Write by owner. */
172 #define S_IXUSR __S_IEXEC /* Execute by owner. */
173 /* Read, write, and execute by owner. */
174 #define S_IRWXU (__S_IREAD|__S_IWRITE|__S_IEXEC)
176 #if defined __USE_MISC && defined __USE_BSD
177 # define S_IREAD S_IRUSR
178 # define S_IWRITE S_IWUSR
179 # define S_IEXEC S_IXUSR
182 #define S_IRGRP (S_IRUSR >> 3) /* Read by group. */
183 #define S_IWGRP (S_IWUSR >> 3) /* Write by group. */
184 #define S_IXGRP (S_IXUSR >> 3) /* Execute by group. */
185 /* Read, write, and execute by group. */
186 #define S_IRWXG (S_IRWXU >> 3)
188 #define S_IROTH (S_IRGRP >> 3) /* Read by others. */
189 #define S_IWOTH (S_IWGRP >> 3) /* Write by others. */
190 #define S_IXOTH (S_IXGRP >> 3) /* Execute by others. */
191 /* Read, write, and execute by others. */
192 #define S_IRWXO (S_IRWXG >> 3)
196 /* Macros for common mode bit masks. */
197 # define ACCESSPERMS (S_IRWXU|S_IRWXG|S_IRWXO) /* 0777 */
198 # define ALLPERMS (S_ISUID|S_ISGID|S_ISVTX|S_IRWXU|S_IRWXG|S_IRWXO)/* 07777 */
199 # define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)/* 0666*/
201 # define S_BLKSIZE 512 /* Block size for `st_blocks'. */
205 #ifndef __USE_FILE_OFFSET64
206 /* Get file attributes for FILE and put them in BUF. */
207 extern int stat (__const
char *__restrict __file
,
208 struct stat
*__restrict __buf
) __THROW
;
210 /* Get file attributes for the file, device, pipe, or socket
211 that file descriptor FD is open on and put them in BUF. */
212 extern int fstat (int __fd
, struct stat
*__buf
) __THROW
;
215 extern int __REDIRECT (stat
,
216 (__const
char *__restrict __file
,
217 struct stat
*__restrict __buf
) __THROW
,
219 extern int __REDIRECT (fstat
, (int __fd
, struct stat
*__buf
) __THROW
, fstat64
);
222 # define fstat fstat64
225 #ifdef __USE_LARGEFILE64
226 extern int stat64 (__const
char *__restrict __file
,
227 struct stat64
*__restrict __buf
) __THROW
;
228 extern int fstat64 (int __fd
, struct stat64
*__buf
) __THROW
;
231 #if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
232 # ifndef __USE_FILE_OFFSET64
233 /* Get file attributes about FILE and put them in BUF.
234 If FILE is a symbolic link, do not follow it. */
235 extern int lstat (__const
char *__restrict __file
,
236 struct stat
*__restrict __buf
) __THROW
;
239 extern int __REDIRECT (lstat
,
240 (__const
char *__restrict __file
,
241 struct stat
*__restrict __buf
) __THROW
,
244 # define lstat lstat64
247 # ifdef __USE_LARGEFILE64
248 extern int lstat64 (__const
char *__restrict __file
,
249 struct stat64
*__restrict __buf
) __THROW
;
253 /* Set file access permissions for FILE to MODE.
254 If FILE is a symbolic link, this affects its target instead. */
255 extern int chmod (__const
char *__file
, __mode_t __mode
) __THROW
;
258 /* Set file access permissions for FILE to MODE.
259 If FILE is a symbolic link, this affects the link itself
260 rather than its target. */
261 extern int lchmod (__const
char *__file
, __mode_t __mode
) __THROW
;
264 /* Set file access permissions of the file FD is open on to MODE. */
265 #if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
266 extern int fchmod (int __fd
, __mode_t __mode
) __THROW
;
270 /* Set the file creation mask of the current process to MASK,
271 and return the old creation mask. */
272 extern __mode_t
umask (__mode_t __mask
) __THROW
;
275 /* Get the current `umask' value without changing it.
276 This function is only available under the GNU Hurd. */
277 extern __mode_t
getumask (void) __THROW
;
280 /* Create a new directory named PATH, with permission bits MODE. */
281 extern int mkdir (__const
char *__path
, __mode_t __mode
) __THROW
;
283 /* Create a device file named PATH, with permission and special bits MODE
284 and device number DEV (which can be constructed from major and minor
285 device numbers with the `makedev' macro above). */
286 #if defined __USE_MISC || defined __USE_BSD || defined __USE_XOPEN_EXTENDED
287 extern int mknod (__const
char *__path
, __mode_t __mode
, __dev_t __dev
)
292 /* Create a new FIFO named PATH, with permission bits MODE. */
293 extern int mkfifo (__const
char *__path
, __mode_t __mode
) __THROW
;
295 /* To allow the `struct stat' structure and the file type `mode_t'
296 bits to vary without changing shared library major version number,
297 the `stat' family of functions and `mknod' are in fact inline
298 wrappers around calls to `xstat', `fxstat', `lxstat', and `xmknod',
299 which all take a leading version-number argument designating the
300 data structure and bits used. <bits/stat.h> defines _STAT_VER with
301 the version number corresponding to `struct stat' as defined in
302 that file; and _MKNOD_VER with the version number corresponding to
303 the S_IF* macros defined therein. It is arranged that when not
304 inlined these function are always statically linked; that way a
305 dynamically-linked executable always encodes the version number
306 corresponding to the data structures it uses, so the `x' functions
307 in the shared library can adapt without needing to recompile all
314 # define _MKNOD_VER 0
317 /* Wrappers for stat and mknod system calls. */
318 #ifndef __USE_FILE_OFFSET64
319 extern int __fxstat (int __ver
, int __fildes
, struct stat
*__stat_buf
) __THROW
;
320 extern int __xstat (int __ver
, __const
char *__filename
,
321 struct stat
*__stat_buf
) __THROW
;
322 extern int __lxstat (int __ver
, __const
char *__filename
,
323 struct stat
*__stat_buf
) __THROW
;
326 extern int __REDIRECT (__fxstat
, (int __ver
, int __fildes
,
327 struct stat
*__stat_buf
) __THROW
,
329 extern int __REDIRECT (__xstat
, (int __ver
, __const
char *__filename
,
330 struct stat
*__stat_buf
) __THROW
, __xstat64
);
331 extern int __REDIRECT (__lxstat
, (int __ver
, __const
char *__filename
,
332 struct stat
*__stat_buf
) __THROW
,
336 # define __fxstat __fxstat64
337 # define __xstat __xstat64
338 # define __lxstat __lxstat64
342 #ifdef __USE_LARGEFILE64
343 extern int __fxstat64 (int __ver
, int __fildes
, struct stat64
*__stat_buf
)
345 extern int __xstat64 (int __ver
, __const
char *__filename
,
346 struct stat64
*__stat_buf
) __THROW
;
347 extern int __lxstat64 (int __ver
, __const
char *__filename
,
348 struct stat64
*__stat_buf
) __THROW
;
350 extern int __xmknod (int __ver
, __const
char *__path
, __mode_t __mode
,
351 __dev_t
*__dev
) __THROW
;
353 #if defined __GNUC__ && __GNUC__ >= 2
354 /* Inlined versions of the real stat and mknod functions. */
356 extern __inline__
int stat (__const
char *__path
,
357 struct stat
*__statbuf
) __THROW
359 return __xstat (_STAT_VER
, __path
, __statbuf
);
362 # if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
363 extern __inline__
int lstat (__const
char *__path
,
364 struct stat
*__statbuf
) __THROW
366 return __lxstat (_STAT_VER
, __path
, __statbuf
);
370 extern __inline__
int fstat (int __fd
, struct stat
*__statbuf
) __THROW
372 return __fxstat (_STAT_VER
, __fd
, __statbuf
);
375 # if defined __USE_MISC || defined __USE_BSD
376 extern __inline__
int mknod (__const
char *__path
, __mode_t __mode
,
377 __dev_t __dev
) __THROW
379 return __xmknod (_MKNOD_VER
, __path
, __mode
, &__dev
);
383 # if defined __USE_LARGEFILE64 \
384 && (! defined __USE_FILE_OFFSET64 \
385 || (defined __REDIRECT && defined __OPTIMIZE__))
386 extern __inline__
int stat64 (__const
char *__path
,
387 struct stat64
*__statbuf
) __THROW
389 return __xstat64 (_STAT_VER
, __path
, __statbuf
);
392 # if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
393 extern __inline__
int lstat64 (__const
char *__path
,
394 struct stat64
*__statbuf
) __THROW
396 return __lxstat64 (_STAT_VER
, __path
, __statbuf
);
400 extern __inline__
int fstat64 (int __fd
, struct stat64
*__statbuf
) __THROW
402 return __fxstat64 (_STAT_VER
, __fd
, __statbuf
);
411 #endif /* sys/stat.h */