linux/include/asm-generic/fcntl.h
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   1#ifndef _ASM_GENERIC_FCNTL_H
   2#define _ASM_GENERIC_FCNTL_H
   3
   4#include <linux/types.h>
   5
   6/*
   7 * FMODE_EXEC is 0x20
   8 * FMODE_NONOTIFY is 0x1000000
   9 * These cannot be used by userspace O_* until internal and external open
  10 * flags are split.
  11 * -Eric Paris
  12 */
  13
  14/*
  15 * When introducing new O_* bits, please check its uniqueness in fcntl_init().
  16 */
  17
  18#define O_ACCMODE       00000003
  19#define O_RDONLY        00000000
  20#define O_WRONLY        00000001
  21#define O_RDWR          00000002
  22#ifndef O_CREAT
  23#define O_CREAT         00000100        /* not fcntl */
  24#endif
  25#ifndef O_EXCL
  26#define O_EXCL          00000200        /* not fcntl */
  27#endif
  28#ifndef O_NOCTTY
  29#define O_NOCTTY        00000400        /* not fcntl */
  30#endif
  31#ifndef O_TRUNC
  32#define O_TRUNC         00001000        /* not fcntl */
  33#endif
  34#ifndef O_APPEND
  35#define O_APPEND        00002000
  36#endif
  37#ifndef O_NONBLOCK
  38#define O_NONBLOCK      00004000
  39#endif
  40#ifndef O_DSYNC
  41#define O_DSYNC         00010000        /* used to be O_SYNC, see below */
  42#endif
  43#ifndef FASYNC
  44#define FASYNC          00020000        /* fcntl, for BSD compatibility */
  45#endif
  46#ifndef O_DIRECT
  47#define O_DIRECT        00040000        /* direct disk access hint */
  48#endif
  49#ifndef O_LARGEFILE
  50#define O_LARGEFILE     00100000
  51#endif
  52#ifndef O_DIRECTORY
  53#define O_DIRECTORY     00200000        /* must be a directory */
  54#endif
  55#ifndef O_NOFOLLOW
  56#define O_NOFOLLOW      00400000        /* don't follow links */
  57#endif
  58#ifndef O_NOATIME
  59#define O_NOATIME       01000000
  60#endif
  61#ifndef O_CLOEXEC
  62#define O_CLOEXEC       02000000        /* set close_on_exec */
  63#endif
  64
  65/*
  66 * Before Linux 2.6.33 only O_DSYNC semantics were implemented, but using
  67 * the O_SYNC flag.  We continue to use the existing numerical value
  68 * for O_DSYNC semantics now, but using the correct symbolic name for it.
  69 * This new value is used to request true Posix O_SYNC semantics.  It is
  70 * defined in this strange way to make sure applications compiled against
  71 * new headers get at least O_DSYNC semantics on older kernels.
  72 *
  73 * This has the nice side-effect that we can simply test for O_DSYNC
  74 * wherever we do not care if O_DSYNC or O_SYNC is used.
  75 *
  76 * Note: __O_SYNC must never be used directly.
  77 */
  78#ifndef O_SYNC
  79#define __O_SYNC        04000000
  80#define O_SYNC          (__O_SYNC|O_DSYNC)
  81#endif
  82
  83#ifndef O_PATH
  84#define O_PATH          010000000
  85#endif
  86
  87#ifndef O_NDELAY
  88#define O_NDELAY        O_NONBLOCK
  89#endif
  90
  91#define F_DUPFD         0       /* dup */
  92#define F_GETFD         1       /* get close_on_exec */
  93#define F_SETFD         2       /* set/clear close_on_exec */
  94#define F_GETFL         3       /* get file->f_flags */
  95#define F_SETFL         4       /* set file->f_flags */
  96#ifndef F_GETLK
  97#define F_GETLK         5
  98#define F_SETLK         6
  99#define F_SETLKW        7
 100#endif
 101#ifndef F_SETOWN
 102#define F_SETOWN        8       /* for sockets. */
 103#define F_GETOWN        9       /* for sockets. */
 104#endif
 105#ifndef F_SETSIG
 106#define F_SETSIG        10      /* for sockets. */
 107#define F_GETSIG        11      /* for sockets. */
 108#endif
 109
 110#ifndef CONFIG_64BIT
 111#ifndef F_GETLK64
 112#define F_GETLK64       12      /*  using 'struct flock64' */
 113#define F_SETLK64       13
 114#define F_SETLKW64      14
 115#endif
 116#endif
 117
 118#ifndef F_SETOWN_EX
 119#define F_SETOWN_EX     15
 120#define F_GETOWN_EX     16
 121#endif
 122
 123#ifndef F_GETOWNER_UIDS
 124#define F_GETOWNER_UIDS 17
 125#endif
 126
 127#define F_OWNER_TID     0
 128#define F_OWNER_PID     1
 129#define F_OWNER_PGRP    2
 130
 131struct f_owner_ex {
 132        int     type;
 133        __kernel_pid_t  pid;
 134};
 135
 136/* for F_[GET|SET]FL */
 137#define FD_CLOEXEC      1       /* actually anything with low bit set goes */
 138
 139/* for posix fcntl() and lockf() */
 140#ifndef F_RDLCK
 141#define F_RDLCK         0
 142#define F_WRLCK         1
 143#define F_UNLCK         2
 144#endif
 145
 146/* for old implementation of bsd flock () */
 147#ifndef F_EXLCK
 148#define F_EXLCK         4       /* or 3 */
 149#define F_SHLCK         8       /* or 4 */
 150#endif
 151
 152/* operations for bsd flock(), also used by the kernel implementation */
 153#define LOCK_SH         1       /* shared lock */
 154#define LOCK_EX         2       /* exclusive lock */
 155#define LOCK_NB         4       /* or'd with one of the above to prevent
 156                                   blocking */
 157#define LOCK_UN         8       /* remove lock */
 158
 159#define LOCK_MAND       32      /* This is a mandatory flock ... */
 160#define LOCK_READ       64      /* which allows concurrent read operations */
 161#define LOCK_WRITE      128     /* which allows concurrent write operations */
 162#define LOCK_RW         192     /* which allows concurrent read & write ops */
 163
 164#define F_LINUX_SPECIFIC_BASE   1024
 165
 166#ifndef HAVE_ARCH_STRUCT_FLOCK
 167#ifndef __ARCH_FLOCK_PAD
 168#define __ARCH_FLOCK_PAD
 169#endif
 170
 171struct flock {
 172        short   l_type;
 173        short   l_whence;
 174        __kernel_off_t  l_start;
 175        __kernel_off_t  l_len;
 176        __kernel_pid_t  l_pid;
 177        __ARCH_FLOCK_PAD
 178};
 179#endif
 180
 181#ifndef CONFIG_64BIT
 182
 183#ifndef HAVE_ARCH_STRUCT_FLOCK64
 184#ifndef __ARCH_FLOCK64_PAD
 185#define __ARCH_FLOCK64_PAD
 186#endif
 187
 188struct flock64 {
 189        short  l_type;
 190        short  l_whence;
 191        __kernel_loff_t l_start;
 192        __kernel_loff_t l_len;
 193        __kernel_pid_t  l_pid;
 194        __ARCH_FLOCK64_PAD
 195};
 196#endif
 197#endif /* !CONFIG_64BIT */
 198
 199#endif /* _ASM_GENERIC_FCNTL_H */
 200
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