glibc/io/sys/stat.h
2000-06-22 17:57:18 +00:00

390 lines
12 KiB
C
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/* Copyright (C) 1991, 92, 1995-1999, 2000 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 Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. 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. */
#ifdef __USE_XOPEN
# define __need_time_t
# include <time.h> /* For time_t. */
/* 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 __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
#ifdef __USE_BSD
# ifndef __S_IFLNK
# define S_ISLNK(mode) 0
# endif
# ifdef __S_IFSOCK
# define S_ISSOCK(mode) __S_ISTYPE((mode), __S_IFSOCK)
# endif
#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 *__file, struct stat *__buf) __THROW;
/* 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;
#else
# ifdef __REDIRECT
extern int __REDIRECT (stat,
(__const char *__file, struct stat *__buf) __THROW,
stat64);
extern int __REDIRECT (fstat, (int __fd, struct stat *__buf) __THROW, fstat64);
# else
# define stat stat64
# define fstat fstat64
# endif
#endif
#ifdef __USE_LARGEFILE64
extern int stat64 (__const char *__file, struct stat64 *__buf) __THROW;
extern int fstat64 (int __fd, struct stat64 *__buf) __THROW;
#endif
#if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
# 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 *__file, struct stat *__buf) __THROW;
# else
# ifdef __REDIRECT
extern int __REDIRECT (lstat,
(__const char *__file, struct stat *__buf) __THROW,
lstat64);
# else
# define lstat lstat64
# endif
# endif
# ifdef __USE_LARGEFILE64
extern int lstat64 (__const char *__file, struct stat64 *__buf) __THROW;
# endif
#endif
/* Set file access permissions for FILE to MODE.
This takes an `int' MODE argument because that
is what `mode_t's get widened to. */
extern int chmod (__const char *__file, __mode_t __mode) __THROW;
/* 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
/* 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;
/* 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;
#endif
/* Create a new FIFO named PATH, with permission bits MODE. */
extern int mkfifo (__const char *__path, __mode_t __mode) __THROW;
/* 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;
extern int __xstat (int __ver, __const char *__filename,
struct stat *__stat_buf) __THROW;
extern int __lxstat (int __ver, __const char *__filename,
struct stat *__stat_buf) __THROW;
#else
# ifdef __REDIRECT
extern int __REDIRECT (__fxstat, (int __ver, int __fildes,
struct stat *__stat_buf) __THROW,
__fxstat64);
extern int __REDIRECT (__xstat, (int __ver, __const char *__filename,
struct stat *__stat_buf) __THROW, __xstat64);
extern int __REDIRECT (__lxstat, (int __ver, __const char *__filename,
struct stat *__stat_buf) __THROW,
__lxstat64);
# 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;
extern int __xstat64 (int __ver, __const char *__filename,
struct stat64 *__stat_buf) __THROW;
extern int __lxstat64 (int __ver, __const char *__filename,
struct stat64 *__stat_buf) __THROW;
#endif
extern int __xmknod (int __ver, __const char *__path, __mode_t __mode,
__dev_t *__dev) __THROW;
#if defined __GNUC__ && __GNUC__ >= 2
/* Inlined versions of the real stat and mknod functions. */
extern __inline__ int stat (__const char *__path,
struct stat *__statbuf) __THROW
{
return __xstat (_STAT_VER, __path, __statbuf);
}
# if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
extern __inline__ int lstat (__const char *__path,
struct stat *__statbuf) __THROW
{
return __lxstat (_STAT_VER, __path, __statbuf);
}
# endif
extern __inline__ int fstat (int __fd, struct stat *__statbuf) __THROW
{
return __fxstat (_STAT_VER, __fd, __statbuf);
}
# if defined __USE_MISC || defined __USE_BSD
extern __inline__ int mknod (__const char *__path, __mode_t __mode,
__dev_t __dev) __THROW
{
return __xmknod (_MKNOD_VER, __path, __mode, &__dev);
}
# endif
# ifdef __USE_LARGEFILE64
extern __inline__ int stat64 (__const char *__path,
struct stat64 *__statbuf) __THROW
{
return __xstat64 (_STAT_VER, __path, __statbuf);
}
# if defined __USE_BSD || defined __USE_XOPEN_EXTENDED
extern __inline__ int lstat64 (__const char *__path,
struct stat64 *__statbuf) __THROW
{
return __lxstat64 (_STAT_VER, __path, __statbuf);
}
# endif
extern __inline__ int fstat64 (int __fd, struct stat64 *__statbuf) __THROW
{
return __fxstat64 (_STAT_VER, __fd, __statbuf);
}
# endif
#endif
__END_DECLS
#endif /* sys/stat.h */