240 lines
8.2 KiB
C
240 lines
8.2 KiB
C
/* Copyright (C) 1991, 1992, 1995, 1996 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 Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the, 1992 Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, 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 <gnu/types.h> /* For __mode_t and __dev_t. */
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__BEGIN_DECLS
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#include <statbuf.h>
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#if defined(__USE_BSD) || defined(__USE_MISC)
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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_IFLNK
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#define S_IFLNK __S_IFLNK
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#endif
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#ifdef __S_IFSOCK
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#define S_IFSOCK __S_IFSOCK
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#endif
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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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#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 __USE_GNU
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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 __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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/* 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)
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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_ISTXT|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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/* Get file attributes for FILE and put them in BUF. */
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extern int __stat __P ((__const char *__file, struct stat *__buf));
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extern int stat __P ((__const char *__file, struct stat *__buf));
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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 __P ((int __fd, struct stat *__buf));
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extern int fstat __P ((int __fd, struct stat *__buf));
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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 __P ((__const char *__file, struct stat *__buf));
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#ifdef __USE_BSD
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extern int lstat __P ((__const char *__file, struct stat *__buf));
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#endif
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/* Set file access permissions for FILE to MODE.
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This takes an `int' MODE argument because that
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is what `mode_t's get widened to. */
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extern int __chmod __P ((__const char *__file, __mode_t __mode));
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extern int chmod __P ((__const char *__file, __mode_t __mode));
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/* Set file access permissions of the file FD is open on to MODE. */
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extern int __fchmod __P ((int __fd, __mode_t __mode));
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#ifdef __USE_BSD
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extern int fchmod __P ((int __fd, __mode_t __mode));
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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 __P ((__mode_t __mask));
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extern __mode_t umask __P ((__mode_t __mask));
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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 __P ((void));
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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 __P ((__const char *__path, __mode_t __mode));
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extern int mkdir __P ((__const char *__path, __mode_t __mode));
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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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extern int __mknod __P ((__const char *__path,
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__mode_t __mode, __dev_t __dev));
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#if defined(__USE_MISC) || defined(__USE_BSD)
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extern int mknod __P ((__const char *__path,
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__mode_t __mode, __dev_t __dev));
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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 __P ((__const char *__path, __mode_t __mode));
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/* To allow the `struct stat' structure and the file type `mode_t' bits to
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vary without changing shared library major version number, the `stat'
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family of functions and `mknod' are in fact inline wrappers around calls
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to `xstat', `fxstat', `lxstat', and `xmknod', which all take a leading
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version-number argument designating the data structure and bits used.
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<statbuf.h> defines _STAT_VER with the version number corresponding to
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`struct stat' as defined in that file; and _MKNOD_VER with the version
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number corresponding to the S_IF* macros defined therein. It is
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arranged that when not inlined these function are always statically
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linked; that way a dynamically-linked executable always encodes the
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version number corresponding to the data structures it uses, so the `x'
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functions in the shared library can adapt without needing to recompile
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all 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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extern int __fxstat __P ((int __ver, int __fildes,
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struct stat *__stat_buf));
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extern int __xstat __P ((int __ver, __const char *__filename,
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struct stat *__stat_buf));
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extern int __lxstat __P ((int __ver, __const char *__filename,
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struct stat *__stat_buf));
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extern int __xmknod __P ((int __ver, __const char *__path,
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__mode_t __mode, __dev_t *__dev));
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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, struct stat *__statbuf)
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{ return __xstat (_STAT_VER, __path, __statbuf); }
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extern __inline__ int stat (__const char *__path, struct stat *__statbuf)
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{ return __xstat (_STAT_VER, __path, __statbuf); }
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extern __inline__ int __lstat(__const char *__path, struct stat *__statbuf)
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{ return __lxstat (_STAT_VER, __path, __statbuf); }
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extern __inline__ int lstat(__const char *__path, struct stat *__statbuf)
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{ return __lxstat (_STAT_VER, __path, __statbuf); }
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extern __inline__ int __fstat (int __fd, struct stat *__statbuf)
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{ return __fxstat (_STAT_VER, __fd, __statbuf); }
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extern __inline__ int fstat (int __fd, struct stat *__statbuf)
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{ return __fxstat (_STAT_VER, __fd, __statbuf); }
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extern __inline__ int __mknod (__const char *__path, __mode_t __mode,
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__dev_t __dev)
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{ return __xmknod (_MKNOD_VER, __path, __mode, &__dev); }
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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)
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{ return __xmknod (_MKNOD_VER, __path, __mode, &__dev); }
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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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