source: trunk/coreutils/src/system.h@ 2603

/* system-dependent definitions for coreutils
   Copyright (C) 1989, 1991-2005 Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2, or (at your option)
   any later version.

   This program 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 General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software Foundation,
   Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */

#include <alloca.h>

/* Include sys/types.h before this file.  */

#if 2 <= __GLIBC__ && 2 <= __GLIBC_MINOR__
# if ! defined _SYS_TYPES_H
you must include <sys/types.h> before including this file
# endif
#endif

#include <sys/stat.h>

#if !defined HAVE_MKFIFO
# define mkfifo(name, mode) mknod (name, (mode) | S_IFIFO, 0)
#endif

#if HAVE_SYS_PARAM_H
# include <sys/param.h>
#endif

#include <unistd.h>

#ifndef STDIN_FILENO
# define STDIN_FILENO 0
#endif

#ifndef STDOUT_FILENO
# define STDOUT_FILENO 1
#endif

#ifndef STDERR_FILENO
# define STDERR_FILENO 2
#endif


/* limits.h must come before pathmax.h because limits.h on some systems
   undefs PATH_MAX, whereas pathmax.h sets PATH_MAX.  */
#include <limits.h>

#include "pathmax.h"
#include "localedir.h"

#if TIME_WITH_SYS_TIME
# include <sys/time.h>
# include <time.h>
#else
# if HAVE_SYS_TIME_H
#  include <sys/time.h>
# else
#  include <time.h>
# endif
#endif

/* Since major is a function on SVR4, we can't use `ifndef major'.  */
#if MAJOR_IN_MKDEV
# include <sys/mkdev.h>
# define HAVE_MAJOR
#endif
#if MAJOR_IN_SYSMACROS
# include <sys/sysmacros.h>
# define HAVE_MAJOR
#endif
#ifdef major                    /* Might be defined in sys/types.h.  */
# define HAVE_MAJOR
#endif

#ifndef HAVE_MAJOR
# define major(dev)  (((dev) >> 8) & 0xff)
# define minor(dev)  ((dev) & 0xff)
# define makedev(maj, min)  (((maj) << 8) | (min))
#endif
#undef HAVE_MAJOR

#if ! defined makedev && defined mkdev
# define makedev(maj, min)  mkdev (maj, min)
#endif

/* Don't use bcopy!  Use memmove if source and destination may overlap,
   memcpy otherwise.  */

#include <string.h>
#include "memrchr.h"

#include <errno.h>

/* Some systems don't define the following symbols.  */
#ifndef ENOSYS
# define ENOSYS (-1)
#endif
#ifndef EISDIR
# define EISDIR (-1)
#endif

#include <stdbool.h>
#include <stdlib.h>

/* The following test is to work around the gross typo in
   systems like Sony NEWS-OS Release 4.0C, whereby EXIT_FAILURE
   is defined to 0, not 1.  */
#if !EXIT_FAILURE
# undef EXIT_FAILURE
# define EXIT_FAILURE 1
#endif

#ifndef EXIT_SUCCESS
# define EXIT_SUCCESS 0
#endif

/* Exit statuses for programs like 'env' that exec other programs.
   EXIT_FAILURE might not be 1, so use EXIT_FAIL in such programs.  */
enum
{
  EXIT_FAIL = 1,
  EXIT_CANNOT_INVOKE = 126,
  EXIT_ENOENT = 127
};

#include "exitfail.h"

/* Set exit_failure to STATUS if that's not the default already.  */
static inline void
initialize_exit_failure (int status)
{
  if (status != EXIT_FAILURE)
    exit_failure = status;
}

#include <fcntl.h>

#if !defined SEEK_SET
# define SEEK_SET 0
# define SEEK_CUR 1
# define SEEK_END 2
#endif
#ifndef F_OK
# define F_OK 0
# define X_OK 1
# define W_OK 2
# define R_OK 4
#endif

#if !defined O_DIRECT
# define O_DIRECT 0
#endif

#if !defined O_DSYNC
# define O_DSYNC 0
#endif

#if !defined O_NDELAY
# define O_NDELAY 0
#endif

#if !defined O_NONBLOCK
# define O_NONBLOCK O_NDELAY
#endif

#if !defined O_NOCTTY
# define O_NOCTTY 0
#endif

#if !defined O_NOFOLLOW
# define O_NOFOLLOW 0
#endif

#if !defined O_RSYNC
# define O_RSYNC 0
#endif

#if !defined O_SYNC
# define O_SYNC 0
#endif

/* For systems that distinguish between text and binary I/O.
   O_BINARY is usually declared in fcntl.h  */
#if !defined O_BINARY && defined _O_BINARY
  /* For MSC-compatible compilers.  */
# define O_BINARY _O_BINARY
# define O_TEXT _O_TEXT
#endif

#ifdef __BEOS__
  /* BeOS 5 has O_BINARY and O_TEXT, but they have no effect.  */
# undef O_BINARY
# undef O_TEXT
#endif

#ifndef O_BINARY
# define O_BINARY 0
# define O_TEXT 0
#endif

#if HAVE_DIRENT_H
# include <dirent.h>
# define NLENGTH(direct) (strlen((direct)->d_name))
#else /* not HAVE_DIRENT_H */
# define dirent direct
# define NLENGTH(direct) ((direct)->d_namlen)
# if HAVE_SYS_NDIR_H
#  include <sys/ndir.h>
# endif /* HAVE_SYS_NDIR_H */
# if HAVE_SYS_DIR_H
#  include <sys/dir.h>
# endif /* HAVE_SYS_DIR_H */
# if HAVE_NDIR_H
#  include <ndir.h>
# endif /* HAVE_NDIR_H */
#endif /* HAVE_DIRENT_H */

#if CLOSEDIR_VOID
/* Fake a return value. */
# define CLOSEDIR(d) (closedir (d), 0)