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