1 /* Copyright (C) 1991, 1992, 1995-2004, 2005, 2006, 2007, 2009 2 Free Software Foundation, Inc. 3 This file is part of the GNU C Library. 4 5 The GNU C Library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 10 The GNU C Library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with the GNU C Library; if not, see 17 <http://www.gnu.org/licenses/>. */ 18 19 /* 20 * POSIX Standard: 5.6 File Characteristics <sys/stat.h> 21 */ 22 23 #ifndef _SYS_STAT_H 24 #define _SYS_STAT_H 1 25 26 #include <features.h> 27 28 #include <bits/types.h> /* For __mode_t and __dev_t. */ 29 30 #if defined __USE_XOPEN || defined __USE_XOPEN2K || defined __USE_MISC \ 31 || defined __USE_ATFILE 32 # if defined __USE_XOPEN || defined __USE_XOPEN2K 33 # define __need_time_t 34 # endif 35 # if defined __USE_MISC || defined __USE_ATFILE || defined __USE_XOPEN2K8 36 # define __need_timespec 37 # endif 38 # include <time.h> /* For time_t resp. timespec. */ 39 #endif 40 41 #if defined __USE_XOPEN || defined __USE_XOPEN2K 42 /* The Single Unix specification says that some more types are 43 available here. */ 44 # ifndef __dev_t_defined 45 typedef __dev_t dev_t; 46 # define __dev_t_defined 47 # endif 48 49 # ifndef __gid_t_defined 50 typedef __gid_t gid_t; 51 # define __gid_t_defined 52 # endif 53 54 # ifndef __ino_t_defined 55 # ifndef __USE_FILE_OFFSET64 56 typedef __ino_t ino_t; 57 # else 58 typedef __ino64_t ino_t; 59 # endif 60 # define __ino_t_defined 61 # endif 62 63 # ifndef __mode_t_defined 64 typedef __mode_t mode_t; 65 # define __mode_t_defined 66 # endif 67 68 # ifndef __nlink_t_defined 69 typedef __nlink_t nlink_t; 70 # define __nlink_t_defined 71 # endif 72 73 # ifndef __off_t_defined 74 # ifndef __USE_FILE_OFFSET64 75 typedef __off_t off_t; 76 # else 77 typedef __off64_t off_t; 78 # endif 79 # define __off_t_defined 80 # endif 81 82 # ifndef __uid_t_defined 83 typedef __uid_t uid_t; 84 # define __uid_t_defined 85 # endif 86 #endif /* X/Open */ 87 88 #ifdef __USE_UNIX98 89 # ifndef __blkcnt_t_defined 90 # ifndef __USE_FILE_OFFSET64 91 typedef __blkcnt_t blkcnt_t; 92 # else 93 typedef __blkcnt64_t blkcnt_t; 94 # endif 95 # define __blkcnt_t_defined 96 # endif 97 98 # ifndef __blksize_t_defined 99 typedef __blksize_t blksize_t; 100 # define __blksize_t_defined 101 # endif 102 #endif /* Unix98 */ 103 104 __BEGIN_DECLS 105 106 #include <bits/stat.h> 107 108 #if defined __USE_BSD || defined __USE_MISC || defined __USE_XOPEN 109 # define S_IFMT __S_IFMT 110 # define S_IFDIR __S_IFDIR 111 # define S_IFCHR __S_IFCHR 112 # define S_IFBLK __S_IFBLK 113 # define S_IFREG __S_IFREG 114 # ifdef __S_IFIFO 115 # define S_IFIFO __S_IFIFO 116 # endif 117 # ifdef __S_IFLNK 118 # define S_IFLNK __S_IFLNK 119 # endif 120 # if (defined __USE_BSD || defined __USE_MISC || defined __USE_UNIX98 \ 121 || defined __USE_XOPEN2K) \ 122 && defined __S_IFSOCK 123 # define S_IFSOCK __S_IFSOCK 124 # endif 125 #endif 126 127 /* Test macros for file types. */ 128 129 #define __S_ISTYPE(mode, mask) (((mode) & __S_IFMT) == (mask)) 130 131 #define S_ISDIR(mode) __S_ISTYPE((mode), __S_IFDIR) 132 #define S_ISCHR(mode) __S_ISTYPE((mode), __S_IFCHR) 133 #define S_ISBLK(mode) __S_ISTYPE((mode), __S_IFBLK) 134 #define S_ISREG(mode) __S_ISTYPE((mode), __S_IFREG) 135 #ifdef __S_IFIFO 136 # define S_ISFIFO(mode) __S_ISTYPE((mode), __S_IFIFO) 137 #endif 138 #ifdef __S_IFLNK 139 # define S_ISLNK(mode) __S_ISTYPE((mode), __S_IFLNK) 140 #endif 141 142 #if defined __USE_BSD && !defined __S_IFLNK 143 # define S_ISLNK(mode) 0 144 #endif 145 146 #if (defined __USE_BSD || defined __USE_UNIX98 || defined __USE_XOPEN2K) \ 147 && defined __S_IFSOCK 148 # define S_ISSOCK(mode) __S_ISTYPE((mode), __S_IFSOCK) 149 #endif 150 151 /* These are from POSIX.1b. If the objects are not implemented using separate 152 distinct file types, the macros always will evaluate to zero. Unlike the 153 other S_* macros the following three take a pointer to a `struct stat' 154 object as the argument. */ 155 #ifdef __USE_POSIX199309 156 # define S_TYPEISMQ(buf) __S_TYPEISMQ(buf) 157 # define S_TYPEISSEM(buf) __S_TYPEISSEM(buf) 158 # define S_TYPEISSHM(buf) __S_TYPEISSHM(buf) 159 #endif 160 161 162 /* Protection bits. */ 163 164 #define S_ISUID __S_ISUID /* Set user ID on execution. */ 165 #define S_ISGID __S_ISGID /* Set group ID on execution. */ 166 167 #if defined __USE_BSD || defined __USE_MISC || defined __USE_XOPEN 168 /* Save swapped text after use (sticky bit). This is pretty well obsolete. */ 169 # define S_ISVTX __S_ISVTX 170 #endif 171 172 #define S_IRUSR __S_IREAD /* Read by owner. */ 173 #define S_IWUSR __S_IWRITE /* Write by owner. */ 174 #define S_IXUSR __S_IEXEC /* Execute by owner. */ 175 /* Read, write, and execute by owner. */ 176 #define S_IRWXU (__S_IREAD|__S_IWRITE|__S_IEXEC) 177 178 #if defined __USE_MISC && defined __USE_BSD 179 # define S_IREAD S_IRUSR 180 # define S_IWRITE S_IWUSR 181 # define S_IEXEC S_IXUSR 182 #endif 183 184 #define S_IRGRP (S_IRUSR >> 3) /* Read by group. */ 185 #define S_IWGRP (S_IWUSR >> 3) /* Write by group. */ 186 #define S_IXGRP (S_IXUSR >> 3) /* Execute by group. */ 187 /* Read, write, and execute by group. */ 188 #define S_IRWXG (S_IRWXU >> 3) 189 190 #define S_IROTH (S_IRGRP >> 3) /* Read by others. */ 191 #define S_IWOTH (S_IWGRP >> 3) /* Write by others. */ 192 #define S_IXOTH (S_IXGRP >> 3) /* Execute by others. */ 193 /* Read, write, and execute by others. */ 194 #define S_IRWXO (S_IRWXG >> 3) 195 196 197 #ifdef __USE_BSD 198 /* Macros for common mode bit masks. */ 199 # define ACCESSPERMS (S_IRWXU|S_IRWXG|S_IRWXO) /* 0777 */ 200 # define ALLPERMS (S_ISUID|S_ISGID|S_ISVTX|S_IRWXU|S_IRWXG|S_IRWXO)/* 07777 */ 201 # define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)/* 0666*/ 202 203 # define S_BLKSIZE 512 /* Block size for `st_blocks'. */ 204 #endif 205 206 207 #ifndef __USE_FILE_OFFSET64 208 /* Get file attributes for FILE and put them in BUF. */ 209 extern int stat (const char *__restrict __file, 210 struct stat *__restrict __buf) __THROW __nonnull ((1, 2)); 211 libc_hidden_proto(stat) 212 213 /* Get file attributes for the file, device, pipe, or socket 214 that file descriptor FD is open on and put them in BUF. */ 215 extern int fstat (int __fd, struct stat *__buf) __THROW __nonnull ((2)); 216 libc_hidden_proto(fstat) 217 #else 218 # ifdef __REDIRECT_NTH 219 extern int __REDIRECT_NTH (stat, (const char *__restrict __file, 220 struct stat *__restrict __buf), stat64) 221 __nonnull ((1, 2)); 222 extern int __REDIRECT_NTH (fstat, (int __fd, struct stat *__buf), fstat64) 223 __nonnull ((2)); 224 # else 225 # define stat stat64 226 # define fstat fstat64 227 # endif 228 #endif 229 #ifdef __USE_LARGEFILE64 230 extern int stat64 (const char *__restrict __file, 231 struct stat64 *__restrict __buf) __THROW __nonnull ((1, 2)); 232 extern int fstat64 (int __fd, struct stat64 *__buf) __THROW __nonnull ((2)); 233 libc_hidden_proto(stat64) 234 libc_hidden_proto(fstat64) 235 #endif 236 237 #ifdef __USE_ATFILE 238 /* Similar to stat, get the attributes for FILE and put them in BUF. 239 Relative path names are interpreted relative to FD unless FD is 240 AT_FDCWD. */ 241 # ifndef __USE_FILE_OFFSET64 242 extern int fstatat (int __fd, const char *__restrict __file, 243 struct stat *__restrict __buf, int __flag) 244 __THROW __nonnull ((2, 3)); 245 libc_hidden_proto(fstatat) 246 # else 247 # ifdef __REDIRECT_NTH 248 extern int __REDIRECT_NTH (fstatat, (int __fd, const char *__restrict __file, 249 struct stat *__restrict __buf, 250 int __flag), 251 fstatat64) __nonnull ((2, 3)); 252 # else 253 # define fstatat fstatat64 254 # endif 255 # endif 256 257 # ifdef __USE_LARGEFILE64 258 extern int fstatat64 (int __fd, const char *__restrict __file, 259 struct stat64 *__restrict __buf, int __flag) 260 __THROW __nonnull ((2, 3)); 261 libc_hidden_proto(fstatat64) 262 # endif 263 #endif 264 265 #if defined __USE_BSD || defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K 266 # ifndef __USE_FILE_OFFSET64 267 /* Get file attributes about FILE and put them in BUF. 268 If FILE is a symbolic link, do not follow it. */ 269 extern int lstat (const char *__restrict __file, 270 struct stat *__restrict __buf) __THROW __nonnull ((1, 2)); 271 libc_hidden_proto(lstat) 272 # else 273 # ifdef __REDIRECT_NTH 274 extern int __REDIRECT_NTH (lstat, 275 (const char *__restrict __file, 276 struct stat *__restrict __buf), lstat64) 277 __nonnull ((1, 2)); 278 # else 279 # define lstat lstat64 280 # endif 281 # endif 282 # ifdef __USE_LARGEFILE64 283 extern int lstat64 (const char *__restrict __file, 284 struct stat64 *__restrict __buf) 285 __THROW __nonnull ((1, 2)); 286 libc_hidden_proto(lstat64) 287 # endif 288 #endif 289 290 /* Set file access permissions for FILE to MODE. 291 If FILE is a symbolic link, this affects its target instead. */ 292 extern int chmod (const char *__file, __mode_t __mode) 293 __THROW __nonnull ((1)); 294 libc_hidden_proto(chmod) 295 296 #if 0 /*def __USE_BSD*/ 297 /* Set file access permissions for FILE to MODE. 298 If FILE is a symbolic link, this affects the link itself 299 rather than its target. */ 300 extern int lchmod (const char *__file, __mode_t __mode) 301 __THROW __nonnull ((1)); 302 #endif 303 304 /* Set file access permissions of the file FD is open on to MODE. */ 305 #if defined __USE_BSD || defined __USE_XOPEN_EXTENDED || defined __USE_XOPEN2K 306 extern int fchmod (int __fd, __mode_t __mode) __THROW; 307 #endif 308 309 #ifdef __USE_ATFILE 310 /* Set file access permissions of FILE relative to 311 the directory FD is open on. */ 312 extern int fchmodat (int __fd, const char *__file, __mode_t __mode, 313 int __flag) 314 __THROW __nonnull ((2)) __wur; 315 libc_hidden_proto(fchmodat) 316 #endif /* Use ATFILE. */ 317 318 319 320 /* Set the file creation mask of the current process to MASK, 321 and return the old creation mask. */ 322 extern __mode_t umask (__mode_t __mask) __THROW; 323 324 #if 0 /*def __USE_GNU*/ 325 /* Get the current `umask' value without changing it. 326 This function is only available under the GNU Hurd. */ 327 extern __mode_t getumask (void) __THROW; 328 #endif 329 330 /* Create a new directory named PATH, with permission bits MODE. */ 331 extern int mkdir (const char *__path, __mode_t __mode) 332 __THROW __nonnull ((1)); 333 libc_hidden_proto(mkdir) 334 335 #ifdef __USE_ATFILE 336 /* Like mkdir, create a new directory with permission bits MODE. But 337 interpret relative PATH names relative to the directory associated 338 with FD. */ 339 extern int mkdirat (int __fd, const char *__path, __mode_t __mode) 340 __THROW __nonnull ((2)); 341 libc_hidden_proto(mkdirat) 342 #endif 343 344 /* Create a device file named PATH, with permission and special bits MODE 345 and device number DEV (which can be constructed from major and minor 346 device numbers with the `makedev' macro above). */ 347 #if defined __USE_MISC || defined __USE_BSD || defined __USE_XOPEN_EXTENDED 348 extern int mknod (const char *__path, __mode_t __mode, __dev_t __dev) 349 __THROW __nonnull ((1)); 350 libc_hidden_proto(mknod) 351 352 # ifdef __USE_ATFILE 353 /* Like mknod, create a new device file with permission bits MODE and 354 device number DEV. But interpret relative PATH names relative to 355 the directory associated with FD. */ 356 extern int mknodat (int __fd, const char *__path, __mode_t __mode, 357 __dev_t __dev) __THROW __nonnull ((2)); 358 libc_hidden_proto(mknodat) 359 # endif 360 #endif 361 362 363 /* Create a new FIFO named PATH, with permission bits MODE. */ 364 extern int mkfifo (const char *__path, __mode_t __mode) 365 __THROW __nonnull ((1)); 366 367 #ifdef __USE_ATFILE 368 /* Like mkfifo, create a new FIFO with permission bits MODE. But 369 interpret relative PATH names relative to the directory associated 370 with FD. */ 371 extern int mkfifoat (int __fd, const char *__path, __mode_t __mode) 372 __THROW __nonnull ((2)); 373 #endif 374 375 #ifdef __USE_ATFILE 376 /* Set file access and modification times relative to directory file 377 descriptor. */ 378 extern int utimensat (int __fd, const char *__path, 379 const struct timespec __times[2], 380 int __flags) 381 __THROW __nonnull ((2)); 382 libc_hidden_proto(utimensat) 383 #endif 384 385 #ifdef __USE_XOPEN2K8 386 /* Set file access and modification times of the file associated with FD. */ 387 extern int futimens (int __fd, const struct timespec __times[2]) __THROW; 388 #endif 389 390 /* on uClibc we have unversioned struct stat and mknod. 391 * bits/stat.h is filled with wrong info, so we undo it here. */ 392 #undef _STAT_VER 393 #define _STAT_VER 0 394 #undef _MKNOD_VER 395 #define _MKNOD_VER 0 396 397 #ifdef __UCLIBC_HAVE_STATX__ 398 #ifdef __USE_GNU 399 # include <bits/statx.h> 400 #endif 401 #endif 402 403 404 __END_DECLS 405 406 407 #endif /* sys/stat.h */ 408