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

   1 /* O_*, F_*, FD_* bit values for Linux.
   2    Copyright (C) 1995, 1996, 1997, 1998, 2000, 2002, 2003, 2004
   3         Free Software Foundation, Inc.
   4    This file is part of the GNU C Library.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20
  21 #ifndef _FCNTL_H
  22 # error "Never use <bits/fcntl.h> directly; include <fcntl.h> instead."
  23 #endif
  24
  25 #include <sgidefs.h>
  26 #include <sys/types.h>
  27
  28 /* open/fcntl - O_SYNC is only implemented on blocks devices and on files
  29    located on an ext2 file system */
  30 #define O_ACCMODE       0x0003
  31 #define O_RDONLY        0x0000
  32 #define O_WRONLY        0x0001
  33 #define O_RDWR          0x0002
  34 #define O_APPEND        0x0008
  35 #define O_SYNC          0x0010
  36 #define O_NONBLOCK      0x0080
  37 #define O_CREAT         0x0100  /* not fcntl */
  38 #define O_TRUNC         0x0200  /* not fcntl */
  39 #define O_EXCL          0x0400  /* not fcntl */
  40 #define O_NOCTTY        0x0800  /* not fcntl */
  41 #define O_FSYNC         O_SYNC
  42 #define O_ASYNC         0x1000
  43
  44 #ifdef __USE_LARGEFILE64
  45 # define O_LARGEFILE    0x2000  /* Allow large file opens.  */
  46 #endif
  47
  48 #ifdef __USE_GNU
  49 # define O_NOFOLLOW     0x20000 /* Do not follow links.  */
  50 # define O_DIRECT       0x8000  /* Direct disk access hint.  */
  51 # define O_DIRECTORY    0x10000 /* Must be a directory.  */
  52 # define O_NOATIME      0x40000 /* Do not set atime.  */
  53 #endif
  54
  55 #define O_NDELAY        O_NONBLOCK
  56
  57 /* For now Linux has no synchronisity options for data and read
  58    operations.  We define the symbols here but let them do the same as
  59    O_SYNC since this is a superset.  */
  60 #if defined __USE_POSIX199309 || defined __USE_UNIX98
  61 # define O_DSYNC        O_SYNC  /* Synchronize data.  */
  62 # define O_RSYNC        O_SYNC  /* Synchronize read operations.  */
  63 #endif
  64
  65 /* Values for the second argument to `fcntl'.  */
  66 #define F_DUPFD         0       /* Duplicate file descriptor.  */
  67 #define F_GETFD         1       /* Get file descriptor flags.  */
  68 #define F_SETFD         2       /* Set file descriptor flags.  */
  69 #define F_GETFL         3       /* Get file status flags.  */
  70 #define F_SETFL         4       /* Set file status flags.  */
  71 #ifndef __USE_FILE_OFFSET64
  72 # define F_GETLK        14      /* Get record locking info.  */
  73 # define F_SETLK        6       /* Set record locking info (non-blocking).  */
  74 # define F_SETLKW       7       /* Set record locking info (blocking).  */
  75 #else
  76 # define F_GETLK        F_GETLK64  /* Get record locking info.  */
  77 # define F_SETLK        F_SETLK64  /* Set record locking info (non-blocking).*/
  78 # define F_SETLKW       F_SETLKW64 /* Set record locking info (blocking).  */
  79 #endif
  80
  81 #define F_GETLK64       33      /* Get record locking info.  */
  82 #define F_SETLK64       34      /* Set record locking info (non-blocking).  */
  83 #define F_SETLKW64      35      /* Set record locking info (blocking).  */
  84
  85 #if defined __USE_BSD || defined __USE_UNIX98
  86 # define F_SETOWN       24      /* Get owner of socket (receiver of SIGIO).  */
  87 # define F_GETOWN       23      /* Set owner of socket (receiver of SIGIO).  */
  88 #endif
  89
  90 #ifdef __USE_GNU
  91 # define F_SETSIG       10      /* Set number of signal to be sent.  */
  92 # define F_GETSIG       11      /* Get number of signal to be sent.  */
  93 #endif
  94
  95 #ifdef __USE_GNU
  96 # define F_SETLEASE     1024    /* Set a lease.  */
  97 # define F_GETLEASE     1025    /* Enquire what lease is active.  */
  98 # define F_NOTIFY       1026    /* Request notfications on a directory.  */
  99 #endif
 100
 101 /* for F_[GET|SET]FL */
 102 #define FD_CLOEXEC      1       /* actually anything with low bit set goes */
 103
 104 /* For posix fcntl() and `l_type' field of a `struct flock' for lockf().  */
 105 #define F_RDLCK         0       /* Read lock.  */
 106 #define F_WRLCK         1       /* Write lock.  */
 107 #define F_UNLCK         2       /* Remove lock.  */
 108
 109 /* for old implementation of bsd flock () */
 110 #define F_EXLCK         4       /* or 3 */
 111 #define F_SHLCK         8       /* or 4 */
 112
 113 #ifdef __USE_BSD
 114 /* Operations for bsd flock(), also used by the kernel implementation */
 115 # define LOCK_SH        1       /* shared lock */
 116 # define LOCK_EX        2       /* exclusive lock */
 117 # define LOCK_NB        4       /* or'd with one of the above to prevent
 118                                    blocking */
 119 # define LOCK_UN        8       /* remove lock */
 120 #endif
 121
 122 #ifdef __USE_GNU
 123 # define LOCK_MAND      32      /* This is a mandatory flock:   */
 124 # define LOCK_READ      64      /* ... which allows concurrent read operations.  */
 125 # define LOCK_WRITE     128     /* ... which allows concurrent write operations.  */
 126 # define LOCK_RW        192     /* ... Which allows concurrent read & write operations.  */
 127 #endif
 128
 129 #ifdef __USE_GNU
 130 /* Types of directory notifications that may be requested with F_NOTIFY.  */
 131 # define DN_ACCESS      0x00000001      /* File accessed.  */
 132 # define DN_MODIFY      0x00000002      /* File modified.  */
 133 # define DN_CREATE      0x00000004      /* File created.  */
 134 # define DN_DELETE      0x00000008      /* File removed.  */
 135 # define DN_RENAME      0x00000010      /* File renamed.  */
 136 # define DN_ATTRIB      0x00000020      /* File changed attibutes.  */
 137 # define DN_MULTISHOT   0x80000000      /* Don't remove notifier.  */
 138 #endif
 139
 140 typedef struct flock
 141   {
 142     short int l_type;   /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
 143     short int l_whence; /* Where `l_start' is relative to (like `lseek').  */
 144 #ifndef __USE_FILE_OFFSET64
 145     __off_t l_start;    /* Offset where the lock begins.  */
 146     __off_t l_len;      /* Size of the locked area; zero means until EOF.  */
 147 #if _MIPS_SIM != _ABI64
 148     /* The 64-bit flock structure, used by the n64 ABI, and for 64-bit
 149        fcntls in o32 and n32, never has this field.  */
 150     long int l_sysid;
 151 #endif
 152 #else
 153     __off64_t l_start;  /* Offset where the lock begins.  */
 154     __off64_t l_len;    /* Size of the locked area; zero means until EOF.  */
 155 #endif
 156     __pid_t l_pid;      /* Process holding the lock.  */
 157 #if ! defined __USE_FILE_OFFSET64 && _MIPS_SIM != _ABI64
 158     /* The 64-bit flock structure, used by the n64 ABI, and for 64-bit
 159        flock in o32 and n32, never has this field.  */
 160     long int pad[4];
 161 #endif
 162 } flock_t;
 163
 164 #ifdef __USE_LARGEFILE64
 165 struct flock64
 166   {
 167     short int l_type;   /* Type of lock: F_RDLCK, F_WRLCK, or F_UNLCK.  */
 168     short int l_whence; /* Where `l_start' is relative to (like `lseek').  */
 169     __off64_t l_start;  /* Offset where the lock begins.  */
 170     __off64_t l_len;    /* Size of the locked area; zero means until EOF.  */
 171     __pid_t l_pid;      /* Process holding the lock.  */
 172   };
 173 #endif
 174
 175
 176 /* Define some more compatibility macros to be backward compatible with
 177    BSD systems which did not managed to hide these kernel macros.  */
 178 #ifdef  __USE_BSD
 179 # define FAPPEND        O_APPEND
 180 # define FFSYNC         O_FSYNC
 181 # define FASYNC         O_ASYNC
 182 # define FNONBLOCK      O_NONBLOCK
 183 # define FNDELAY        O_NDELAY
 184 #endif /* Use BSD.  */
 185
 186 /* Advise to `posix_fadvise'.  */
 187 #ifdef __USE_XOPEN2K
 188 # define POSIX_FADV_NORMAL      0 /* No further special treatment.  */
 189 # define POSIX_FADV_RANDOM      1 /* Expect random page references.  */
 190 # define POSIX_FADV_SEQUENTIAL  2 /* Expect sequential page references.  */
 191 # define POSIX_FADV_WILLNEED    3 /* Will need these pages.  */
 192 # define POSIX_FADV_DONTNEED    4 /* Don't need these pages.  */
 193 # define POSIX_FADV_NOREUSE     5 /* Data will be accessed once.  */
 194 #endif