summaryrefslogtreecommitdiff
path: root/io/sys/stat.h
blob: 60955016eb2103018d0f2167e305cae59bae935c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
/* Copyright (C) 1991, 1992, 1995-2004, 2005, 2006, 2007, 2009
   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 Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

/*
 *	POSIX Standard: 5.6 File Characteristics	<sys/stat.h>
 */

#ifndef	_SYS_STAT_H
#define	_SYS_STAT_H	1

#include <features.h>

#include <bits/types.h>		/* For __mode_t and __dev_t.  */

#if defined __USE_XOPEN || defined __USE_XOPEN2K || defined __USE_MISC \
         || defined __USE_ATFILE
# if defined __USE_XOPEN || defined __USE_XOPEN2K
#  define __need_time_t
# endif
# if defined __USE_MISC || defined __USE_ATFILE
#  define __need_timespec
# endif
# include <time.h>		/* For time_t resp. timespec.  */
#endif

#if defined __USE_XOPEN || defined __USE_XOPEN2K
/* The Single Unix specification says that some more types are
   available here.  */
# ifndef __dev_t_defined
typedef __dev_t dev_t;
#  define __dev_t_defined
# endif

# ifndef __gid_t_defined
typedef __gid_t gid_t;
#  define __gid_t_defined
# endif

# ifndef __ino_t_defined
#  ifndef __USE_FILE_OFFSET64
typedef __ino_t ino_t;
#  else
typedef __ino64_t ino_t;
#  endif
#  define __ino_t_defined
# endif

# ifndef __mode_t_defined
typedef __mode_t mode_t;
#  define __mode_t_defined
# endif

# ifndef __nlink_t_defined
typedef __nlink_t nlink_t;
#  define __nlink_t_defined
# endif

# ifndef __off_t_defined
#  ifndef __USE_FILE_OFFSET64
typedef __off_t off_t;
#  else
typedef __off64_t off_t;
#  endif
#  define __off_t_defined
# endif

# ifndef __uid_t_defined
typedef __uid_t uid_t;
#  define __uid_t_defined
# endif
#endif	/* X/Open */

#ifdef __USE_UNIX98
# ifndef __blkcnt_t_defined
#  ifndef __USE_FILE_OFFSET64
typedef __blkcnt_t blkcnt_t;
#  else
typedef __blkcnt64_t blkcnt_t;
#  endif
#  define __blkcnt_t_defined
# endif

# ifndef __blksize_t_defined
typedef __blksize_t blksize_t;
#  define __blksize_t_defined
# endif
#endif	/* Unix98 */

__BEGIN_DECLS

#include <bits/stat.h>

#if defined __USE_BSD || defined __USE_MISC || defined __USE_XOPEN
# define S_IFMT		__S_IFMT
# define S_IFDIR	__S_IFDIR
# define S_IFCHR	__S_IFCHR
# define S_IFBLK	__S_IFBLK
# define S_IFREG	__S_IFREG
# ifdef __S_IFIFO
#  define S_IFIFO	__S_IFIFO
# endif
# ifdef __S_IFLNK
#  define S_IFLNK	__S_IFLNK
# endif
# if (defined __USE_BSD || defined __USE_MISC || defined __USE_UNIX98) \
     && defined __S_IFSOCK
#  define S_IFSOCK	__S_IFSOCK
# endif
#endif

/* Test macros for file types.	*/

#define	__S_ISTYPE(mode, mask)	(((mode) & __S_IFMT) == (mask))

#define	S_ISDIR(mode)	 __S_ISTYPE((mode), __S_IFDIR)
#define	S_ISCHR(mode)	 __S_ISTYPE((mode), __S_IFCHR)
#define	S_ISBLK(mode)	 __S_ISTYPE((mode), __S_IFBLK)
#define	S_ISREG(mode)	 __S_ISTYPE((mode), __S_IFREG)
#ifdef __S_IFIFO
# define S_ISFIFO(mode)	 __S_ISTYPE((mode), __S_IFIFO)
#endif
#ifdef __S_IFLNK
# define S_ISLNK(mode)	 __S_ISTYPE((mode), __S_IFLNK)
#endif

#if defined __USE_BSD && !defined __S_IFLNK
# define S_ISLNK(mode)  0
#endif

#if (defined __USE_BSD || defined __USE_UNIX98) \
    && defined __S_IFSOCK
# define S_ISSOCK(mode) __S_ISTYPE((mode), __S_IFSOCK)
#endif

/* These are from POSIX.1b.  If the objects are not implemented using separate
   distinct file types, the macros always will evaluate to zero.  Unlike the
   other S_* macros the following three take a pointer to a `struct stat'
   object as the argument.  */
#ifdef	__USE_POSIX199309
# define S_TYPEISMQ(buf) __S_TYPEISMQ(buf)
# define S_TYPEISSEM(buf) __S_TYPEISSEM(buf)
# define S_TYPEISSHM(buf) __S_TYPEISSHM(buf)
#endif


/* Protection bits.  */

#define	S_ISUID __S_ISUID	/* Set user ID on execution.  */
#define	S_ISGID	__S_ISGID	/* Set group ID on execution.  */

#if defined __USE_BSD || defined __USE_MISC || defined __USE_XOPEN
/* Save swapped text after use (sticky bit).  This is pretty well obsolete.  */
# define S_ISVTX	__S_ISVTX
#endif

#define	S_IRUSR	__S_IREAD	/* Read by owner.  */
#define	S_IWUSR	__S_IWRITE	/* Write by owner.  */
#define	S_IXUSR	__S_IEXEC	/* Execute by owner.  */
/* Read, write, and execute by owner.  */
#define	S_IRWXU	(__S_IREAD|__S_IWRITE|__S_IEXEC)

#if defined __USE_MISC && defined __USE_BSD
# define S_IREAD	S_IRUSR
# define S_IWRITE	S_IWUSR
# define S_IEXEC	S_IXUSR
#endif

#define	S_IRGRP	(S_IRUSR >> 3)	/* Read by group.  */
#define	S_IWGRP	(S_IWUSR >> 3)	/* Write by group.  */
#define	S_IXGRP	(S_IXUSR >> 3)	/* Execute by group.  */
/* Read, write, and execute by group.  */
#define	S_IRWXG	(S_IRWXU >> 3)

#define	S_IROTH	(S_IRGRP >> 3)	/* Read by others.  */
#define	S_IWOTH	(S_IWGRP >> 3)	/* Write by others.  */
#define	S_IXOTH	(S_IXGRP >> 3)	/* Execute by others.  */
/* Read, write, and execute by others.  */
#define	S_IRWXO	(S_IRWXG >> 3)


#ifdef	__USE_BSD
/* Macros for common mode bit masks.  */
# define ACCESSPERMS (S_IRWXU|S_IRWXG|S_IRWXO) /* 0777 */
# define ALLPERMS (S_ISUID|S_ISGID|S_ISVTX|S_IRWXU|S_IRWXG|S_IRWXO)/* 07777 */
# define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)/* 0666*/

# define S_BLKSIZE	512	/* Block size for `st_blocks'.  */
#endif


#ifndef __USE_FILE_OFFSET64
/* Get file attributes for FILE and put them in BUF.  */
extern int stat (__const char *__restrict __file,
		 struct stat *__restrict __buf) __THROW __nonnull ((1, 2));

/* Get file attributes for the file, device, pipe, or socket
   that file descriptor FD is open on and put them in BUF.  */
extern int fstat (int __fd, struct stat *__buf) __THROW __nonnull ((2));
#else
# ifdef __REDIRECT_NTH
extern int __REDIRECT_NTH (stat, (__const char *__restrict __file,
				  struct stat *__restrict __buf), stat64)
     __nonnull ((1, 2));
extern int __REDIRECT_NTH (fstat, (int __fd, struct stat *__buf), fstat64)
     __nonnull ((2));
# else
#  define stat stat64
#  define fstat fstat64
# endif
#endif
#ifdef __USE_LARGEFILE64
extern int stat64 (__const char *__restrict __file,
		   struct stat64 *__restrict __buf) __THROW __nonnull ((1, 2));
extern int fstat64 (int __fd, struct stat64 *__buf) __THROW __nonnull ((2));
#endif

#ifdef __USE_ATFILE
/* Similar to stat, get the attributes for FILE and put them in BUF.
   Relative path names are interpreted relative to FD unless FD is
   AT_FDCWD.  */
# ifndef __USE_FILE_OFFSET64
extern int fstatat (int __fd, __const char *__restrict __file,
		    struct stat *__restrict __buf, int __flag)
     __THROW __nonnull ((2, 3));
# else
#  ifdef __REDIRECT_NTH
extern int __REDIRECT_NTH (fstatat, (int __fd, __const char *__restrict __file,
				     struct stat *__restrict __buf,
				     int __flag),
			   fstatat64) __nonnull ((2, 3));
#  else
#   define fstatat fstatat64
#  endif
# endif

extern int fstatat64 (int __fd, __const char *__restrict __file,
		      struct stat64 *__restrict __buf, int __flag)
     __THROW __nonnull ((2, 3));
#endif

#if defined __USE_BSD || defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K
# ifndef __USE_FILE_OFFSET64
/* Get file attributes about FILE and put them in BUF.
   If FILE is a symbolic link, do not follow it.  */
extern int lstat (__const char *__restrict __file,
		  struct stat *__restrict __buf) __THROW __nonnull ((1, 2));
# else
#  ifdef __REDIRECT_NTH
extern int __REDIRECT_NTH (lstat,
			   (__const char *__restrict __file,
			    struct stat *__restrict __buf), lstat64)
     __nonnull ((1, 2));
#  else
#   define lstat lstat64
#  endif
# endif
# ifdef __USE_LARGEFILE64
extern int lstat64 (__const char *__restrict __file,
		    struct stat64 *__restrict __buf)
     __THROW __nonnull ((1, 2));
# endif
#endif

/* Set file access permissions for FILE to MODE.
   If FILE is a symbolic link, this affects its target instead.  */
extern int chmod (__const char *__file, __mode_t __mode)
     __THROW __nonnull ((1));

#ifdef __USE_BSD
/* Set file access permissions for FILE to MODE.
   If FILE is a symbolic link, this affects the link itself
   rather than its target.  */
extern int lchmod (__const char *__file, __mode_t __mode)
     __THROW __nonnull ((1));
#endif

/* Set file access permissions of the file FD is open on to MODE.  */
#if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
extern int fchmod (int __fd, __mode_t __mode) __THROW;
#endif

#ifdef __USE_ATFILE
/* Set file access permissions of FILE relative to
   the directory FD is open on.  */
extern int fchmodat (int __fd, __const char *__file, __mode_t __mode,
		     int __flag)
     __THROW __nonnull ((2)) __wur;
#endif /* Use ATFILE.  */



/* Set the file creation mask of the current process to MASK,
   and return the old creation mask.  */
extern __mode_t umask (__mode_t __mask) __THROW;

#ifdef	__USE_GNU
/* Get the current `umask' value without changing it.
   This function is only available under the GNU Hurd.  */
extern __mode_t getumask (void) __THROW;
#endif

/* Create a new directory named PATH, with permission bits MODE.  */
extern int mkdir (__const char *__path, __mode_t __mode)
     __THROW __nonnull ((1));

#ifdef __USE_ATFILE
/* Like mkdir, create a new directory with permission bits MODE.  But
   interpret relative PATH names relative to the directory associated
   with FD.  */
extern int mkdirat (int __fd, __const char *__path, __mode_t __mode)
     __THROW __nonnull ((2));
#endif

/* Create a device file named PATH, with permission and special bits MODE
   and device number DEV (which can be constructed from major and minor
   device numbers with the `makedev' macro above).  */
#if defined __USE_MISC || defined __USE_BSD || defined __USE_XOPEN_EXTENDED
extern int mknod (__const char *__path, __mode_t __mode, __dev_t __dev)
     __THROW __nonnull ((1));

# ifdef __USE_ATFILE
/* Like mknod, create a new device file with permission bits MODE and
   device number DEV.  But interpret relative PATH names relative to
   the directory associated with FD.  */
extern int mknodat (int __fd, __const char *__path, __mode_t __mode,
		    __dev_t __dev) __THROW __nonnull ((2));
# endif
#endif


/* Create a new FIFO named PATH, with permission bits MODE.  */
extern int mkfifo (__const char *__path, __mode_t __mode)
     __THROW __nonnull ((1));

#ifdef __USE_ATFILE
/* Like mkfifo, create a new FIFO with permission bits MODE.  But
   interpret relative PATH names relative to the directory associated
   with FD.  */
extern int mkfifoat (int __fd, __const char *__path, __mode_t __mode)
     __THROW __nonnull ((2));
#endif

#ifdef __USE_ATFILE
/* Set file access and modification times relative to directory file
   descriptor.  */
extern int utimensat (int __fd, __const char *__path,
		      __const struct timespec __times[2],
		      int __flags)
     __THROW __nonnull ((2));
#endif

#ifdef __USE_GNU
/* XXX This will change to the macro for the next 2008 POSIX revision.  */
/* Set file access and modification times of the file associated with FD.  */
extern int futimens (int __fd, __const struct timespec __times[2]) __THROW;
#endif

/* To allow the `struct stat' structure and the file type `mode_t'
   bits to vary without changing shared library major version number,
   the `stat' family of functions and `mknod' are in fact inline
   wrappers around calls to `xstat', `fxstat', `lxstat', and `xmknod',
   which all take a leading version-number argument designating the
   data structure and bits used.  <bits/stat.h> defines _STAT_VER with
   the version number corresponding to `struct stat' as defined in
   that file; and _MKNOD_VER with the version number corresponding to
   the S_IF* macros defined therein.  It is arranged that when not
   inlined these function are always statically linked; that way a
   dynamically-linked executable always encodes the version number
   corresponding to the data structures it uses, so the `x' functions
   in the shared library can adapt without needing to recompile all
   callers.  */

#ifndef _STAT_VER
# define _STAT_VER	0
#endif
#ifndef _MKNOD_VER
# define _MKNOD_VER	0
#endif

/* Wrappers for stat and mknod system calls.  */
#ifndef __USE_FILE_OFFSET64
extern int __fxstat (int __ver, int __fildes, struct stat *__stat_buf)
     __THROW __nonnull ((3));
extern int __xstat (int __ver, __const char *__filename,
		    struct stat *__stat_buf) __THROW __nonnull ((2, 3));
extern int __lxstat (int __ver, __const char *__filename,
		     struct stat *__stat_buf) __THROW __nonnull ((2, 3));
extern int __fxstatat (int __ver, int __fildes, __const char *__filename,
		       struct stat *__stat_buf, int __flag)
     __THROW __nonnull ((3, 4));
#else
# ifdef __REDIRECT_NTH
extern int __REDIRECT_NTH (__fxstat, (int __ver, int __fildes,
				      struct stat *__stat_buf), __fxstat64)
     __nonnull ((3));
extern int __REDIRECT_NTH (__xstat, (int __ver, __const char *__filename,
				     struct stat *__stat_buf), __xstat64)
     __nonnull ((2, 3));
extern int __REDIRECT_NTH (__lxstat, (int __ver, __const char *__filename,
				      struct stat *__stat_buf), __lxstat64)
     __nonnull ((2, 3));
extern int __REDIRECT_NTH (__fxstatat, (int __ver, int __fildes,
					__const char *__filename,
					struct stat *__stat_buf, int __flag),
			   __fxstatat64) __nonnull ((3, 4));

# else
#  define __fxstat __fxstat64
#  define __xstat __xstat64
#  define __lxstat __lxstat64
# endif
#endif

#ifdef __USE_LARGEFILE64
extern int __fxstat64 (int __ver, int __fildes, struct stat64 *__stat_buf)
     __THROW __nonnull ((3));
extern int __xstat64 (int __ver, __const char *__filename,
		      struct stat64 *__stat_buf) __THROW __nonnull ((2, 3));
extern int __lxstat64 (int __ver, __const char *__filename,
		       struct stat64 *__stat_buf) __THROW __nonnull ((2, 3));
extern int __fxstatat64 (int __ver, int __fildes, __const char *__filename,
			 struct stat64 *__stat_buf, int __flag)
     __THROW __nonnull ((3, 4));
#endif
extern int __xmknod (int __ver, __const char *__path, __mode_t __mode,
		     __dev_t *__dev) __THROW __nonnull ((2, 4));

extern int __xmknodat (int __ver, int __fd, __const char *__path,
		       __mode_t __mode, __dev_t *__dev)
     __THROW __nonnull ((3, 5));

#if defined __GNUC__ && __GNUC__ >= 2 && defined __USE_EXTERN_INLINES
/* Inlined versions of the real stat and mknod functions.  */

__extern_inline int
__NTH (stat (__const char *__path, struct stat *__statbuf))
{
  return __xstat (_STAT_VER, __path, __statbuf);
}

# if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
__extern_inline int
__NTH (lstat (__const char *__path, struct stat *__statbuf))
{
  return __lxstat (_STAT_VER, __path, __statbuf);
}
# endif

__extern_inline int
__NTH (fstat (int __fd, struct stat *__statbuf))
{
  return __fxstat (_STAT_VER, __fd, __statbuf);
}

# ifdef __USE_ATFILE
__extern_inline int
__NTH (fstatat (int __fd, __const char *__filename, struct stat *__statbuf,
		int __flag))
{
  return __fxstatat (_STAT_VER, __fd, __filename, __statbuf, __flag);
}
# endif

# if defined __USE_MISC || defined __USE_BSD
__extern_inline int
__NTH (mknod (__const char *__path, __mode_t __mode, __dev_t __dev))
{
  return __xmknod (_MKNOD_VER, __path, __mode, &__dev);
}
# endif

# ifdef __USE_ATFILE
__extern_inline int
__NTH (mknodat (int __fd, __const char *__path, __mode_t __mode,
		__dev_t __dev))
{
  return __xmknodat (_MKNOD_VER, __fd, __path, __mode, &__dev);
}
# endif

# if defined __USE_LARGEFILE64 \
  && (! defined __USE_FILE_OFFSET64 \
      || (defined __REDIRECT_NTH && defined __OPTIMIZE__))
__extern_inline int
__NTH (stat64 (__const char *__path, struct stat64 *__statbuf))
{
  return __xstat64 (_STAT_VER, __path, __statbuf);
}

#  if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
__extern_inline int
__NTH (lstat64 (__const char *__path, struct stat64 *__statbuf))
{
  return __lxstat64 (_STAT_VER, __path, __statbuf);
}
#  endif

__extern_inline int
__NTH (fstat64 (int __fd, struct stat64 *__statbuf))
{
  return __fxstat64 (_STAT_VER, __fd, __statbuf);
}

#  ifdef __USE_GNU
__extern_inline int
__NTH (fstatat64 (int __fd, __const char *__filename, struct stat64 *__statbuf,
		  int __flag))
{
  return __fxstatat64 (_STAT_VER, __fd, __filename, __statbuf, __flag);
}
#  endif

# endif

#endif

__END_DECLS


#endif /* sys/stat.h  */