source: svn/trunk/newcon3bcm2_21bu/toolchain/mipsel-linux-uclibc/include/bits/fcntl.h @ 2

/* 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 Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 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
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; 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     0x20000 /* Do not follow links.  */
# define O_DIRECT       0x8000  /* Direct disk access hint.  */
# define O_DIRECTORY    0x10000 /* Must be a directory.  */
# define O_STREAMING    0x4000000/* streaming access */
#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.  */
#ifndef __USE_FILE_OFFSET64
# 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).  */
#else
# define F_GETLK        F_GETLK64  /* Get record locking info.  */
# define F_SETLK        F_SETLK64  /* Set record locking info (non-blocking).*/
# define F_SETLKW       F_SETLKW64 /* Set record locking info (blocking).  */
#endif

#define F_GETLK64       33      /* Get record locking info.  */
#define F_SETLK64       34      /* Set record locking info (non-blocking).  */
#define F_SETLKW64      35      /* Set record locking info (blocking).  */

#if defined __USE_BSD || defined __USE_XOPEN2K
# 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

#ifdef __USE_GNU
# define F_SETLEASE     1024    /* Set a lease.  */
# define F_GETLEASE     1025    /* Enquire what lease is active.  */
# define F_NOTIFY       1026    /* Request notfications on a directory.  */
#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

#ifdef __USE_GNU
# define LOCK_MAND      32      /* This is a mandatory flock:   */
# define LOCK_READ      64      /* ... which allows concurrent read operations.  */
# define LOCK_WRITE     128     /* ... which allows concurrent write operations.  */
# define LOCK_RW        192     /* ... Which allows concurrent read & write operations.  */
#endif

#ifdef __USE_GNU
/* Types of directory notifications that may be requested with F_NOTIFY.  */
# define DN_ACCESS      0x00000001      /* File accessed.  */
# define DN_MODIFY      0x00000002      /* File modified.  */
# define DN_CREATE      0x00000004      /* File created.  */
# define DN_DELETE      0x00000008      /* File removed.  */
# define DN_RENAME      0x00000010      /* File renamed.  */
# define DN_ATTRIB      0x00000020      /* File changed attibutes.  */
# define DN_MULTISHOT   0x80000000      /* Don't remove notifier.  */
#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.  */
    long int l_sysid;   /* XXX */
#else
    __off64_t l_start;  /* Offset where the lock begins.  */
    __off64_t l_len;    /* Size of the locked area; zero means until EOF.  */
#endif
    __pid_t l_pid;      /* Process holding the lock.  */
#ifndef __USE_FILE_OFFSET64
    long int pad[4];    /* XXX */
#endif
} 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.  */
    __pid_t l_pid;      /* Process holding the lock.  */
  };
#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