glibc/sysdeps/unix/sysv/linux/mips/bits/fcntl.h

/* O_*, F_*, FD_* bit values for Linux.
   Copyright (C) 1995, 1996, 1997, 1998, 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.  */

#ifndef _FCNTL_H
# error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead."
#endif

#include <sys/types.h>


/* open/fcntl - O_SYNC is only implemented on blocks devices and on files
   located on an ext2 file system */
#define O_ACCMODE	0x0003
#define O_RDONLY	0x0000
#define O_WRONLY	0x0001
#define O_RDWR		0x0002
#define O_APPEND	0x0008
#define O_SYNC		0x0010
#define O_NONBLOCK	0x0080
#define O_CREAT         0x0100	/* not fcntl */
#define O_TRUNC		0x0200	/* not fcntl */
#define O_EXCL		0x0400	/* not fcntl */
#define O_NOCTTY	0x0800	/* not fcntl */
#define O_FSYNC		O_SYNC
#define O_ASYNC		0x1000

#ifdef __USE_LARGEFILE64
# define O_LARGEFILE	0x2000	/* Allow large file opens.  */
#endif

#ifdef __USE_GNU
# define O_NOFOLLOW	0x4000	/* Do not follow links.  */
# define O_DIRECT	0x8000	/* Direct disk access hint.  */
# define O_DIRECTORY	0x10000	/* Must be a directory.  */
#endif

#define O_NDELAY	O_NONBLOCK

/* For now Linux has no synchronisity options for data and read
   operations.  We define the symbols here but let them do the same as
   O_SYNC since this is a superset.  */
#if defined __USE_POSIX199309 || defined __USE_UNIX98
# define O_DSYNC	O_SYNC	/* Synchronize data.  */
# define O_RSYNC	O_SYNC	/* Synchronize read operations.  */
#endif

/* Values for the second argument to `fcntl'.  */
#define F_DUPFD		0	/* Duplicate file descriptor.  */
#define F_GETFD		1	/* Get file descriptor flags.  */
#define F_SETFD		2	/* Set file descriptor flags.  */
#define F_GETFL		3	/* Get file status flags.  */
#define F_SETFL		4	/* Set file status flags.  */
#define F_GETLK		14	/* Get record locking info.  */
#define F_SETLK		6	/* Set record locking info (non-blocking).  */
#define F_SETLKW	7	/* Set record locking info (blocking).  */

/* XXX missing */
#define F_GETLK64	14	/* Get record locking info.  */
#define F_SETLK64	6	/* Set record locking info (non-blocking).  */
#define F_SETLKW64	7	/* Set record locking info (blocking).  */

#ifdef __USE_BSD
# define F_SETOWN	24	/* Get owner of socket (receiver of SIGIO).  */
# define F_GETOWN	23	/* Set owner of socket (receiver of SIGIO).  */
#endif

#ifdef __USE_GNU
# define F_SETSIG	10	/* Set number of signal to be sent.  */
# define F_GETSIG	11	/* Get number of signal to be sent.  */
#endif

/* for F_[GET|SET]FL */
#define FD_CLOEXEC	1	/* actually anything with low bit set goes */

/* For posix fcntl() and `l_type' field of a `struct flock' for lockf().  */
#define F_RDLCK		0	/* Read lock.  */
#define F_WRLCK		1	/* Write lock.  */
#define F_UNLCK		2	/* Remove lock.  */

/* for old implementation of bsd flock () */
#define F_EXLCK		4	/* or 3 */
#define F_SHLCK		8	/* or 4 */

#ifdef __USE_BSD
/* Operations for bsd flock(), also used by the kernel implementation */
# define LOCK_SH	1	/* shared lock */
# define LOCK_EX	2	/* exclusive lock */
# define LOCK_NB	4	/* or'd with one of the above to prevent
				   blocking */
# define LOCK_UN	8	/* remove lock */
#endif

typedef struct flock
  {
    short int l_type;	/* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
    short int l_whence;	/* Where `l_start' is relative to (like `lseek').  */
#ifndef __USE_FILE_OFFSET64
    __off_t l_start;	/* Offset where the lock begins.  */
    __off_t l_len;	/* Size of the locked area; zero means until EOF.  */
#else
    __off64_t l_start;	/* Offset where the lock begins.  */
    __off64_t l_len;	/* Size of the locked area; zero means until EOF.  */
#endif
    long int l_sysid;	/* XXX */
    __pid_t l_pid;	/* Process holding the lock.  */
    long int pad[4];	/* XXX */
  } flock_t;

#ifdef __USE_LARGEFILE64
struct flock64
  {
    short int l_type;	/* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
    short int l_whence;	/* Where `l_start' is relative to (like `lseek').  */
    __off64_t l_start;	/* Offset where the lock begins.  */
    __off64_t l_len;	/* Size of the locked area; zero means until EOF.  */
    long int l_sysid;	/* XXX */
    __pid_t l_pid;	/* Process holding the lock.  */
    long int pad[4];	/* XXX */
  };
#endif


/* Define some more compatibility macros to be backward compatible with
   BSD systems which did not managed to hide these kernel macros.  */
#ifdef	__USE_BSD
# define FAPPEND	O_APPEND
# define FFSYNC		O_FSYNC
# define FASYNC		O_ASYNC
# define FNONBLOCK	O_NONBLOCK
# define FNDELAY	O_NDELAY
#endif /* Use BSD.  */

/* Advise to `posix_fadvise'.  */
#ifdef __USE_XOPEN2K
# define POSIX_FADV_NORMAL	0 /* No further special treatment.  */
# define POSIX_FADV_RANDOM	1 /* Expect random page references.  */
# define POSIX_FADV_SEQUENTIAL	2 /* Expect sequential page references.  */
# define POSIX_FADV_WILLNEED	3 /* Will need these pages.  */
# define POSIX_FADV_DONTNEED	4 /* Don't need these pages.  */
# define POSIX_FADV_NOREUSE	5 /* Data will be accessed once.  */
#endif