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

   1 /* O_*, F_*, FD_* bit values for Linux.
   2    Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Library General Public License as
   7    published by the Free Software Foundation; either version 2 of the
   8    License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Library General Public License for more details.
  14
  15    You should have received a copy of the GNU Library General Public
  16    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  17    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18    Boston, MA 02111-1307, USA.  */
  19
  20 #ifndef _FCNTL_H
  21 # error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead."
  22 #endif
  23
  24 #include <sys/types.h>
  25
  26
  27 /* open/fcntl - O_SYNC is only implemented on blocks devices and on files
  28    located on an ext2 file system */
  29 #define O_ACCMODE       0x0003
  30 #define O_RDONLY        0x0000
  31 #define O_WRONLY        0x0001
  32 #define O_RDWR          0x0002
  33 #define O_APPEND        0x0008
  34 #define O_SYNC          0x0010
  35 #define O_NONBLOCK      0x0080
  36 #define O_CREAT         0x0100  /* not fcntl */
  37 #define O_TRUNC         0x0200  /* not fcntl */
  38 #define O_EXCL          0x0400  /* not fcntl */
  39 #define O_NOCTTY        0x0800  /* not fcntl */
  40 #define O_FSYNC         O_SYNC
  41 #define O_ASYNC         0x1000
  42
  43 #ifdef __USE_GNU
  44 # define O_LARGEFILE    0x2000  /* Allow large file opens.  */
  45 # define O_NOFOLLOW     0x4000  /* Do not follow links.  */
  46 # define O_DIRECT       0x8000  /* Direct disk access hint.  */
  47 # define O_DIRECTORY    0x10000 /* Must be a directory.  */
  48 #endif
  49
  50 #define O_NDELAY        O_NONBLOCK
  51
  52 /* Values for the second argument to `fcntl'.  */
  53 #define F_DUPFD         0       /* Duplicate file descriptor.  */
  54 #define F_GETFD         1       /* Get file descriptor flags.  */
  55 #define F_SETFD         2       /* Set file descriptor flags.  */
  56 #define F_GETFL         3       /* Get file status flags.  */
  57 #define F_SETFL         4       /* Set file status flags.  */
  58 #define F_GETLK         14      /* Get record locking info.  */
  59 #define F_SETLK         6       /* Set record locking info (non-blocking).  */
  60 #define F_SETLKW        7       /* Set record locking info (blocking).  */
  61
  62 /* XXX missing */
  63 #define F_GETLK64       14      /* Get record locking info.  */
  64 #define F_SETLK64       6       /* Set record locking info (non-blocking).  */
  65 #define F_SETLKW64      7       /* Set record locking info (blocking).  */
  66
  67 #ifdef __USE_BSD
  68 # define F_SETOWN       24      /* Get owner of socket (receiver of SIGIO).  */
  69 # define F_GETOWN       23      /* Set owner of socket (receiver of SIGIO).  */
  70 #endif
  71
  72 #ifdef __USE_GNU
  73 # define F_SETSIG       10      /* Set number of signal to be sent.  */
  74 # define F_GETSIG       11      /* Get number of signal to be sent.  */
  75 #endif
  76
  77 /* for F_[GET|SET]FL */
  78 #define FD_CLOEXEC      1       /* actually anything with low bit set goes */
  79
  80 /* For posix fcntl() and `l_type' field of a `struct flock' for lockf().  */
  81 #define F_RDLCK         0       /* Read lock.  */
  82 #define F_WRLCK         1       /* Write lock.  */
  83 #define F_UNLCK         2       /* Remove lock.  */
  84
  85 /* for old implementation of bsd flock () */
  86 #define F_EXLCK         4       /* or 3 */
  87 #define F_SHLCK         8       /* or 4 */
  88
  89 #ifdef __USE_BSD
  90 /* Operations for bsd flock(), also used by the kernel implementation */
  91 # define LOCK_SH        1       /* shared lock */
  92 # define LOCK_EX        2       /* exclusive lock */
  93 # define LOCK_NB        4       /* or'd with one of the above to prevent                XXXXXXXXXXXXXXXXXX
  94                                    blocking */
  95 # define LOCK_UN        8       /* remove lock */
  96 #endif
  97
  98 typedef struct flock
  99   {
 100     short int l_type;   /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
 101     short int l_whence; /* Where `l_start' is relative to (like `lseek').  */
 102 #ifndef __USE_FILE_OFFSET64
 103     __off_t l_start;    /* Offset where the lock begins.  */
 104     __off_t l_len;      /* Size of the locked area; zero means until EOF.  */
 105 #else
 106     __off64_t l_start;  /* Offset where the lock begins.  */
 107     __off64_t l_len;    /* Size of the locked area; zero means until EOF.  */
 108 #endif
 109     long int l_sysid;   /* XXX */
 110     __pid_t l_pid;      /* Process holding the lock.  */
 111     long int pad[4];    /* XXX */
 112   } flock_t;
 113
 114 #ifdef __USE_LARGEFILE64
 115 struct flock64
 116   {
 117     short int l_type;   /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
 118     short int l_whence; /* Where `l_start' is relative to (like `lseek').  */
 119     __off64_t l_start;  /* Offset where the lock begins.  */
 120     __off64_t l_len;    /* Size of the locked area; zero means until EOF.  */
 121     long int l_sysid;   /* XXX */
 122     __pid_t l_pid;      /* Process holding the lock.  */
 123     long int pad[4];    /* XXX */
 124   };
 125 #endif
 126
 127
 128 /* Define some more compatibility macros to be backward compatible with
 129    BSD systems which did not managed to hide these kernel macros.  */
 130 #ifdef  __USE_BSD
 131 # define FAPPEND        O_APPEND
 132 # define FFSYNC         O_FSYNC
 133 # define FASYNC         O_ASYNC
 134 # define FNONBLOCK      O_NONBLOCK
 135 # define FNDELAY        O_NDELAY
 136 #endif /* Use BSD.  */