root/include/linux/fcntl.h

INCLUDED FROM

#ifndef _LINUX_FCNTL_H
#define _LINUX_FCNTL_H

#include <asm/fcntl.h>

#define F_SETLEASE      (F_LINUX_SPECIFIC_BASE + 0)
#define F_GETLEASE      (F_LINUX_SPECIFIC_BASE + 1)

/*
 * Cancel a blocking posix lock; internal use only until we expose an
 * asynchronous lock api to userspace:
 */
#define F_CANCELLK      (F_LINUX_SPECIFIC_BASE + 5)

/* Create a file descriptor with FD_CLOEXEC set. */
#define F_DUPFD_CLOEXEC (F_LINUX_SPECIFIC_BASE + 6)

/*
 * Request nofications on a directory.
 * See below for events that may be notified.
 */
#define F_NOTIFY        (F_LINUX_SPECIFIC_BASE+2)

/*
 * Types of directory notifications that may be requested.
 */
#define DN_ACCESS       0x00000001      /* File accessed */
#define DN_MODIFY       0x00000002      /* File modified */
#define DN_CREATE       0x00000004      /* File created */
#define DN_DELETE       0x00000008      /* File removed */
#define DN_RENAME       0x00000010      /* File renamed */
#define DN_ATTRIB       0x00000020      /* File changed attibutes */
#define DN_MULTISHOT    0x80000000      /* Don't remove notifier */

#define AT_FDCWD                -100    /* Special value used to indicate
                                           openat should use the current
                                           working directory. */
#define AT_SYMLINK_NOFOLLOW     0x100   /* Do not follow symbolic links.  */
#define AT_REMOVEDIR            0x200   /* Remove directory instead of
                                           unlinking file.  */
#define AT_SYMLINK_FOLLOW       0x400   /* Follow symbolic links.  */

#ifdef __KERNEL__

#ifndef force_o_largefile
#define force_o_largefile() (BITS_PER_LONG != 32)
#endif

#if BITS_PER_LONG == 32
#define IS_GETLK32(cmd)         ((cmd) == F_GETLK)
#define IS_SETLK32(cmd)         ((cmd) == F_SETLK)
#define IS_SETLKW32(cmd)        ((cmd) == F_SETLKW)
#define IS_GETLK64(cmd)         ((cmd) == F_GETLK64)
#define IS_SETLK64(cmd)         ((cmd) == F_SETLK64)
#define IS_SETLKW64(cmd)        ((cmd) == F_SETLKW64)
#else
#define IS_GETLK32(cmd)         (0)
#define IS_SETLK32(cmd)         (0)
#define IS_SETLKW32(cmd)        (0)
#define IS_GETLK64(cmd)         ((cmd) == F_GETLK)
#define IS_SETLK64(cmd)         ((cmd) == F_SETLK)
#define IS_SETLKW64(cmd)        ((cmd) == F_SETLKW)
#endif /* BITS_PER_LONG == 32 */

#define IS_GETLK(cmd)   (IS_GETLK32(cmd)  || IS_GETLK64(cmd))
#define IS_SETLK(cmd)   (IS_SETLK32(cmd)  || IS_SETLK64(cmd))
#define IS_SETLKW(cmd)  (IS_SETLKW32(cmd) || IS_SETLKW64(cmd))

#endif /* __KERNEL__ */

#endif