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412 lines
12 KiB
C
412 lines
12 KiB
C
/* Copyright (C) 1991,1992,1995-2002,2003 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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/*
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* POSIX Standard: 5.6 File Characteristics <sys/stat.h>
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*/
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#ifndef _SYS_STAT_H
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#define _SYS_STAT_H 1
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#include <features.h>
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#include <bits/types.h> /* For __mode_t and __dev_t. */
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#if defined __USE_XOPEN || defined __USE_MISC
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# ifdef __USE_XOPEN
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# define __need_time_t
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# endif
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# ifdef __USE_MISC
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# define __need_timespec
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# endif
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# include <time.h> /* For time_t resp. timespec. */
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#endif
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#ifdef __USE_XOPEN
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/* The Single Unix specification says that some more types are
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available here. */
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# ifndef __dev_t_defined
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typedef __dev_t dev_t;
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# define __dev_t_defined
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# endif
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# ifndef __gid_t_defined
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typedef __gid_t gid_t;
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# define __gid_t_defined
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# endif
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# ifndef __ino_t_defined
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# ifndef __USE_FILE_OFFSET64
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typedef __ino_t ino_t;
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# else
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typedef __ino64_t ino_t;
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# endif
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# define __ino_t_defined
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# endif
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# ifndef __mode_t_defined
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typedef __mode_t mode_t;
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# define __mode_t_defined
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# endif
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# ifndef __nlink_t_defined
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typedef __nlink_t nlink_t;
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# define __nlink_t_defined
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# endif
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# ifndef __off_t_defined
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# ifndef __USE_FILE_OFFSET64
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typedef __off_t off_t;
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# else
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typedef __off64_t off_t;
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# endif
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# define __off_t_defined
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# endif
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# ifndef __uid_t_defined
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typedef __uid_t uid_t;
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# define __uid_t_defined
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# endif
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#endif /* X/Open */
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#ifdef __USE_UNIX98
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# ifndef __blkcnt_t_defined
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# ifndef __USE_FILE_OFFSET64
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typedef __blkcnt_t blkcnt_t;
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# else
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typedef __blkcnt64_t blkcnt_t;
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# endif
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# define __blkcnt_t_defined
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# endif
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# ifndef __blksize_t_defined
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typedef __blksize_t blksize_t;
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# define __blksize_t_defined
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# endif
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#endif /* Unix98 */
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__BEGIN_DECLS
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#include <bits/stat.h>
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#if defined __USE_BSD || defined __USE_MISC || defined __USE_XOPEN
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# define S_IFMT __S_IFMT
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# define S_IFDIR __S_IFDIR
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# define S_IFCHR __S_IFCHR
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# define S_IFBLK __S_IFBLK
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# define S_IFREG __S_IFREG
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# ifdef __S_IFIFO
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# define S_IFIFO __S_IFIFO
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# endif
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# ifdef __S_IFLNK
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# define S_IFLNK __S_IFLNK
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# endif
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# if (defined __USE_BSD || defined __USE_MISC || defined __USE_XOPEN2K) \
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&& defined __S_IFSOCK
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# define S_IFSOCK __S_IFSOCK
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# endif
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#endif
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/* Test macros for file types. */
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#define __S_ISTYPE(mode, mask) (((mode) & __S_IFMT) == (mask))
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#define S_ISDIR(mode) __S_ISTYPE((mode), __S_IFDIR)
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#define S_ISCHR(mode) __S_ISTYPE((mode), __S_IFCHR)
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#define S_ISBLK(mode) __S_ISTYPE((mode), __S_IFBLK)
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#define S_ISREG(mode) __S_ISTYPE((mode), __S_IFREG)
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#ifdef __S_IFIFO
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# define S_ISFIFO(mode) __S_ISTYPE((mode), __S_IFIFO)
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#endif
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#ifdef __S_IFLNK
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# define S_ISLNK(mode) __S_ISTYPE((mode), __S_IFLNK)
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#endif
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#ifdef __USE_BSD
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# ifndef __S_IFLNK
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# define S_ISLNK(mode) 0
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# endif
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# ifdef __S_IFSOCK
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# define S_ISSOCK(mode) __S_ISTYPE((mode), __S_IFSOCK)
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# endif
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#endif
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/* These are from POSIX.1b. If the objects are not implemented using separate
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distinct file types, the macros always will evaluate to zero. Unlike the
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other S_* macros the following three take a pointer to a `struct stat'
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object as the argument. */
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#ifdef __USE_POSIX199309
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# define S_TYPEISMQ(buf) __S_TYPEISMQ(buf)
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# define S_TYPEISSEM(buf) __S_TYPEISSEM(buf)
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# define S_TYPEISSHM(buf) __S_TYPEISSHM(buf)
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#endif
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/* Protection bits. */
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#define S_ISUID __S_ISUID /* Set user ID on execution. */
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#define S_ISGID __S_ISGID /* Set group ID on execution. */
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#if defined __USE_BSD || defined __USE_MISC || defined __USE_XOPEN
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/* Save swapped text after use (sticky bit). This is pretty well obsolete. */
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# define S_ISVTX __S_ISVTX
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#endif
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#define S_IRUSR __S_IREAD /* Read by owner. */
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#define S_IWUSR __S_IWRITE /* Write by owner. */
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#define S_IXUSR __S_IEXEC /* Execute by owner. */
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/* Read, write, and execute by owner. */
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#define S_IRWXU (__S_IREAD|__S_IWRITE|__S_IEXEC)
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#if defined __USE_MISC && defined __USE_BSD
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# define S_IREAD S_IRUSR
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# define S_IWRITE S_IWUSR
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# define S_IEXEC S_IXUSR
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#endif
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#define S_IRGRP (S_IRUSR >> 3) /* Read by group. */
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#define S_IWGRP (S_IWUSR >> 3) /* Write by group. */
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#define S_IXGRP (S_IXUSR >> 3) /* Execute by group. */
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/* Read, write, and execute by group. */
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#define S_IRWXG (S_IRWXU >> 3)
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#define S_IROTH (S_IRGRP >> 3) /* Read by others. */
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#define S_IWOTH (S_IWGRP >> 3) /* Write by others. */
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#define S_IXOTH (S_IXGRP >> 3) /* Execute by others. */
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/* Read, write, and execute by others. */
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#define S_IRWXO (S_IRWXG >> 3)
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#ifdef __USE_BSD
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/* Macros for common mode bit masks. */
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# define ACCESSPERMS (S_IRWXU|S_IRWXG|S_IRWXO) /* 0777 */
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# define ALLPERMS (S_ISUID|S_ISGID|S_ISVTX|S_IRWXU|S_IRWXG|S_IRWXO)/* 07777 */
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# define DEFFILEMODE (S_IRUSR|S_IWUSR|S_IRGRP|S_IWGRP|S_IROTH|S_IWOTH)/* 0666*/
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# define S_BLKSIZE 512 /* Block size for `st_blocks'. */
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#endif
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#ifndef __USE_FILE_OFFSET64
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/* Get file attributes for FILE and put them in BUF. */
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extern int stat (__const char *__restrict __file,
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struct stat *__restrict __buf) __THROW;
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/* Get file attributes for the file, device, pipe, or socket
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that file descriptor FD is open on and put them in BUF. */
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extern int fstat (int __fd, struct stat *__buf) __THROW;
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#else
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# ifdef __REDIRECT
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extern int __REDIRECT (stat,
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(__const char *__restrict __file,
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struct stat *__restrict __buf) __THROW,
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stat64);
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extern int __REDIRECT (fstat, (int __fd, struct stat *__buf) __THROW, fstat64);
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# else
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# define stat stat64
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# define fstat fstat64
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# endif
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#endif
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#ifdef __USE_LARGEFILE64
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extern int stat64 (__const char *__restrict __file,
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struct stat64 *__restrict __buf) __THROW;
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extern int fstat64 (int __fd, struct stat64 *__buf) __THROW;
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#endif
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#if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
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# ifndef __USE_FILE_OFFSET64
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/* Get file attributes about FILE and put them in BUF.
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If FILE is a symbolic link, do not follow it. */
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extern int lstat (__const char *__restrict __file,
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struct stat *__restrict __buf) __THROW;
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# else
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# ifdef __REDIRECT
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extern int __REDIRECT (lstat,
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(__const char *__restrict __file,
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struct stat *__restrict __buf) __THROW,
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lstat64);
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# else
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# define lstat lstat64
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# endif
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# endif
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# ifdef __USE_LARGEFILE64
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extern int lstat64 (__const char *__restrict __file,
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struct stat64 *__restrict __buf) __THROW;
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# endif
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#endif
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/* Set file access permissions for FILE to MODE.
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If FILE is a symbolic link, this affects its target instead. */
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extern int chmod (__const char *__file, __mode_t __mode) __THROW;
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#ifdef __USE_BSD
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/* Set file access permissions for FILE to MODE.
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If FILE is a symbolic link, this affects the link itself
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rather than its target. */
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extern int lchmod (__const char *__file, __mode_t __mode) __THROW;
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#endif
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/* Set file access permissions of the file FD is open on to MODE. */
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#if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
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extern int fchmod (int __fd, __mode_t __mode) __THROW;
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#endif
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/* Set the file creation mask of the current process to MASK,
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and return the old creation mask. */
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extern __mode_t umask (__mode_t __mask) __THROW;
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#ifdef __USE_GNU
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/* Get the current `umask' value without changing it.
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This function is only available under the GNU Hurd. */
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extern __mode_t getumask (void) __THROW;
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#endif
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/* Create a new directory named PATH, with permission bits MODE. */
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extern int mkdir (__const char *__path, __mode_t __mode) __THROW;
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/* Create a device file named PATH, with permission and special bits MODE
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and device number DEV (which can be constructed from major and minor
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device numbers with the `makedev' macro above). */
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#if defined __USE_MISC || defined __USE_BSD || defined __USE_XOPEN_EXTENDED
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extern int mknod (__const char *__path, __mode_t __mode, __dev_t __dev)
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__THROW;
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#endif
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/* Create a new FIFO named PATH, with permission bits MODE. */
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extern int mkfifo (__const char *__path, __mode_t __mode) __THROW;
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/* To allow the `struct stat' structure and the file type `mode_t'
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bits to vary without changing shared library major version number,
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the `stat' family of functions and `mknod' are in fact inline
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wrappers around calls to `xstat', `fxstat', `lxstat', and `xmknod',
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which all take a leading version-number argument designating the
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data structure and bits used. <bits/stat.h> defines _STAT_VER with
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the version number corresponding to `struct stat' as defined in
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that file; and _MKNOD_VER with the version number corresponding to
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the S_IF* macros defined therein. It is arranged that when not
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inlined these function are always statically linked; that way a
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dynamically-linked executable always encodes the version number
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corresponding to the data structures it uses, so the `x' functions
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in the shared library can adapt without needing to recompile all
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callers. */
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#ifndef _STAT_VER
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# define _STAT_VER 0
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#endif
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#ifndef _MKNOD_VER
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# define _MKNOD_VER 0
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#endif
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/* Wrappers for stat and mknod system calls. */
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#ifndef __USE_FILE_OFFSET64
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extern int __fxstat (int __ver, int __fildes, struct stat *__stat_buf) __THROW;
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extern int __xstat (int __ver, __const char *__filename,
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struct stat *__stat_buf) __THROW;
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extern int __lxstat (int __ver, __const char *__filename,
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struct stat *__stat_buf) __THROW;
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#else
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# ifdef __REDIRECT
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extern int __REDIRECT (__fxstat, (int __ver, int __fildes,
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struct stat *__stat_buf) __THROW,
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__fxstat64);
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extern int __REDIRECT (__xstat, (int __ver, __const char *__filename,
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struct stat *__stat_buf) __THROW, __xstat64);
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extern int __REDIRECT (__lxstat, (int __ver, __const char *__filename,
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struct stat *__stat_buf) __THROW,
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__lxstat64);
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# else
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# define __fxstat __fxstat64
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# define __xstat __xstat64
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# define __lxstat __lxstat64
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# endif
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#endif
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#ifdef __USE_LARGEFILE64
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extern int __fxstat64 (int __ver, int __fildes, struct stat64 *__stat_buf)
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__THROW;
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extern int __xstat64 (int __ver, __const char *__filename,
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struct stat64 *__stat_buf) __THROW;
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extern int __lxstat64 (int __ver, __const char *__filename,
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struct stat64 *__stat_buf) __THROW;
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#endif
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extern int __xmknod (int __ver, __const char *__path, __mode_t __mode,
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__dev_t *__dev) __THROW;
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#if defined __GNUC__ && __GNUC__ >= 2
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/* Inlined versions of the real stat and mknod functions. */
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extern __inline__ int stat (__const char *__path,
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struct stat *__statbuf) __THROW
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{
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return __xstat (_STAT_VER, __path, __statbuf);
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}
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# if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
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extern __inline__ int lstat (__const char *__path,
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struct stat *__statbuf) __THROW
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{
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return __lxstat (_STAT_VER, __path, __statbuf);
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}
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# endif
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extern __inline__ int fstat (int __fd, struct stat *__statbuf) __THROW
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{
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return __fxstat (_STAT_VER, __fd, __statbuf);
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}
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# if defined __USE_MISC || defined __USE_BSD
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extern __inline__ int mknod (__const char *__path, __mode_t __mode,
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__dev_t __dev) __THROW
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{
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return __xmknod (_MKNOD_VER, __path, __mode, &__dev);
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}
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# endif
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# if defined __USE_LARGEFILE64 \
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&& (! defined __USE_FILE_OFFSET64 \
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|| (defined __REDIRECT && defined __OPTIMIZE__))
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extern __inline__ int stat64 (__const char *__path,
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struct stat64 *__statbuf) __THROW
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{
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return __xstat64 (_STAT_VER, __path, __statbuf);
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}
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# if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
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extern __inline__ int lstat64 (__const char *__path,
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struct stat64 *__statbuf) __THROW
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{
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return __lxstat64 (_STAT_VER, __path, __statbuf);
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}
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# endif
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extern __inline__ int fstat64 (int __fd, struct stat64 *__statbuf) __THROW
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{
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return __fxstat64 (_STAT_VER, __fd, __statbuf);
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}
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# endif
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#endif
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__END_DECLS
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#endif /* sys/stat.h */
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