LXR linux/include/linux/fcntl.h

   1#ifndef _LINUX_FCNTL_H
   2#define _LINUX_FCNTL_H
   3
   4#include <asm/fcntl.h>
   5
   6/* Cancel a blocking posix lock; internal use only until we expose an
   7 * asynchronous lock api to userspace: */
   8#define F_CANCELLK      (F_LINUX_SPECIFIC_BASE+5)
   9
  10#define F_SETLEASE      (F_LINUX_SPECIFIC_BASE+0)
  11#define F_GETLEASE      (F_LINUX_SPECIFIC_BASE+1)
  12
  13/*
  14 * Request nofications on a directory.
  15 * See below for events that may be notified.
  16 */
  17#define F_NOTIFY        (F_LINUX_SPECIFIC_BASE+2)
  18
  19/*
  20 * Types of directory notifications that may be requested.
  21 */
  22#define DN_ACCESS       0x00000001      /* File accessed */
  23#define DN_MODIFY       0x00000002      /* File modified */
  24#define DN_CREATE       0x00000004      /* File created */
  25#define DN_DELETE       0x00000008      /* File removed */
  26#define DN_RENAME       0x00000010      /* File renamed */
  27#define DN_ATTRIB       0x00000020      /* File changed attibutes */
  28#define DN_MULTISHOT    0x80000000      /* Don't remove notifier */
  29
  30#define AT_FDCWD                -100    /* Special value used to indicate
  31                                           openat should use the current
  32                                           working directory. */
  33#define AT_SYMLINK_NOFOLLOW     0x100   /* Do not follow symbolic links.  */
  34#define AT_REMOVEDIR            0x200   /* Remove directory instead of
  35                                           unlinking file.  */
  36#define AT_SYMLINK_FOLLOW       0x400   /* Follow symbolic links.  */
  37
  38#ifdef __KERNEL__
  39
  40#ifndef force_o_largefile
  41#define force_o_largefile() (BITS_PER_LONG != 32)
  42#endif
  43
  44#if BITS_PER_LONG == 32
  45#define IS_GETLK32(cmd)         ((cmd) == F_GETLK)
  46#define IS_SETLK32(cmd)         ((cmd) == F_SETLK)
  47#define IS_SETLKW32(cmd)        ((cmd) == F_SETLKW)
  48#define IS_GETLK64(cmd)         ((cmd) == F_GETLK64)
  49#define IS_SETLK64(cmd)         ((cmd) == F_SETLK64)
  50#define IS_SETLKW64(cmd)        ((cmd) == F_SETLKW64)
  51#else
  52#define IS_GETLK32(cmd)         (0)
  53#define IS_SETLK32(cmd)         (0)
  54#define IS_SETLKW32(cmd)        (0)
  55#define IS_GETLK64(cmd)         ((cmd) == F_GETLK)
  56#define IS_SETLK64(cmd)         ((cmd) == F_SETLK)
  57#define IS_SETLKW64(cmd)        ((cmd) == F_SETLKW)
  58#endif /* BITS_PER_LONG == 32 */
  59
  60#define IS_GETLK(cmd)   (IS_GETLK32(cmd)  || IS_GETLK64(cmd))
  61#define IS_SETLK(cmd)   (IS_SETLK32(cmd)  || IS_SETLK64(cmd))
  62#define IS_SETLKW(cmd)  (IS_SETLKW32(cmd) || IS_SETLKW64(cmd))
  63
  64#endif /* __KERNEL__ */
  65
  66#endif
  67