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shm: add sealing API
[mirror_ubuntu-zesty-kernel.git] / include / uapi / linux / fcntl.h
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1#ifndef _UAPI_LINUX_FCNTL_H
2#define _UAPI_LINUX_FCNTL_H
3
4#include <asm/fcntl.h>
5
6#define F_SETLEASE (F_LINUX_SPECIFIC_BASE + 0)
7#define F_GETLEASE (F_LINUX_SPECIFIC_BASE + 1)
8
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)
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 * Set and get of pipe page size array
26 */
27#define F_SETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 7)
28#define F_GETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 8)
29
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30/*
31 * Set/Get seals
32 */
33#define F_ADD_SEALS (F_LINUX_SPECIFIC_BASE + 9)
34#define F_GET_SEALS (F_LINUX_SPECIFIC_BASE + 10)
35
36/*
37 * Types of seals
38 */
39#define F_SEAL_SEAL 0x0001 /* prevent further seals from being set */
40#define F_SEAL_SHRINK 0x0002 /* prevent file from shrinking */
41#define F_SEAL_GROW 0x0004 /* prevent file from growing */
42#define F_SEAL_WRITE 0x0008 /* prevent writes */
43/* (1U << 31) is reserved for signed error codes */
44
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45/*
46 * Types of directory notifications that may be requested.
47 */
48#define DN_ACCESS 0x00000001 /* File accessed */
49#define DN_MODIFY 0x00000002 /* File modified */
50#define DN_CREATE 0x00000004 /* File created */
51#define DN_DELETE 0x00000008 /* File removed */
52#define DN_RENAME 0x00000010 /* File renamed */
53#define DN_ATTRIB 0x00000020 /* File changed attibutes */
54#define DN_MULTISHOT 0x80000000 /* Don't remove notifier */
55
56#define AT_FDCWD -100 /* Special value used to indicate
57 openat should use the current
58 working directory. */
59#define AT_SYMLINK_NOFOLLOW 0x100 /* Do not follow symbolic links. */
60#define AT_REMOVEDIR 0x200 /* Remove directory instead of
61 unlinking file. */
62#define AT_SYMLINK_FOLLOW 0x400 /* Follow symbolic links. */
63#define AT_NO_AUTOMOUNT 0x800 /* Suppress terminal automount traversal */
64#define AT_EMPTY_PATH 0x1000 /* Allow empty relative pathname */
65
66
67#endif /* _UAPI_LINUX_FCNTL_H */