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mm: clean up mm_counter
[mirror_ubuntu-zesty-kernel.git] / include / linux / fcntl.h
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1#ifndef _LINUX_FCNTL_H
2#define _LINUX_FCNTL_H
3
4#include <asm/fcntl.h>
5
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6#define F_SETLEASE (F_LINUX_SPECIFIC_BASE + 0)
7#define F_GETLEASE (F_LINUX_SPECIFIC_BASE + 1)
9b9d2ab4 8
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9/*
10 * Cancel a blocking posix lock; internal use only until we expose an
11 * asynchronous lock api to userspace:
12 */
13#define F_CANCELLK (F_LINUX_SPECIFIC_BASE + 5)
14
15/* Create a file descriptor with FD_CLOEXEC set. */
16#define F_DUPFD_CLOEXEC (F_LINUX_SPECIFIC_BASE + 6)
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17
18/*
19 * Request nofications on a directory.
20 * See below for events that may be notified.
21 */
22#define F_NOTIFY (F_LINUX_SPECIFIC_BASE+2)
23
24/*
25 * Types of directory notifications that may be requested.
26 */
27#define DN_ACCESS 0x00000001 /* File accessed */
28#define DN_MODIFY 0x00000002 /* File modified */
29#define DN_CREATE 0x00000004 /* File created */
30#define DN_DELETE 0x00000008 /* File removed */
31#define DN_RENAME 0x00000010 /* File renamed */
32#define DN_ATTRIB 0x00000020 /* File changed attibutes */
33#define DN_MULTISHOT 0x80000000 /* Don't remove notifier */
34
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35#define AT_FDCWD -100 /* Special value used to indicate
36 openat should use the current
37 working directory. */
38#define AT_SYMLINK_NOFOLLOW 0x100 /* Do not follow symbolic links. */
39#define AT_REMOVEDIR 0x200 /* Remove directory instead of
40 unlinking file. */
45c9b11a 41#define AT_SYMLINK_FOLLOW 0x400 /* Follow symbolic links. */
5590ff0d 42
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43#ifdef __KERNEL__
44
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45#ifndef force_o_largefile
46#define force_o_largefile() (BITS_PER_LONG != 32)
47#endif
48
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49#if BITS_PER_LONG == 32
50#define IS_GETLK32(cmd) ((cmd) == F_GETLK)
51#define IS_SETLK32(cmd) ((cmd) == F_SETLK)
52#define IS_SETLKW32(cmd) ((cmd) == F_SETLKW)
53#define IS_GETLK64(cmd) ((cmd) == F_GETLK64)
54#define IS_SETLK64(cmd) ((cmd) == F_SETLK64)
55#define IS_SETLKW64(cmd) ((cmd) == F_SETLKW64)
56#else
57#define IS_GETLK32(cmd) (0)
58#define IS_SETLK32(cmd) (0)
59#define IS_SETLKW32(cmd) (0)
60#define IS_GETLK64(cmd) ((cmd) == F_GETLK)
61#define IS_SETLK64(cmd) ((cmd) == F_SETLK)
62#define IS_SETLKW64(cmd) ((cmd) == F_SETLKW)
63#endif /* BITS_PER_LONG == 32 */
64
65#define IS_GETLK(cmd) (IS_GETLK32(cmd) || IS_GETLK64(cmd))
66#define IS_SETLK(cmd) (IS_SETLK32(cmd) || IS_SETLK64(cmd))
67#define IS_SETLKW(cmd) (IS_SETLKW32(cmd) || IS_SETLKW64(cmd))
68
69#endif /* __KERNEL__ */
70
71#endif