1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 #ifndef _UAPI_LINUX_FCNTL_H
3 #define _UAPI_LINUX_FCNTL_H
4
5 #include <asm/fcntl.h>
6
7 #define F_SETLEASE (F_LINUX_SPECIFIC_BASE + 0)
8 #define F_GETLEASE (F_LINUX_SPECIFIC_BASE + 1)
9
10 /*
11 * Cancel a blocking posix lock; internal use only until we expose an
12 * asynchronous lock api to userspace:
13 */
14 #define F_CANCELLK (F_LINUX_SPECIFIC_BASE + 5)
15
16 /* Create a file descriptor with FD_CLOEXEC set. */
17 #define F_DUPFD_CLOEXEC (F_LINUX_SPECIFIC_BASE + 6)
18
19 /*
20 * Request nofications on a directory.
21 * See below for events that may be notified.
22 */
23 #define F_NOTIFY (F_LINUX_SPECIFIC_BASE+2)
24
25 /*
26 * Set and get of pipe page size array
27 */
28 #define F_SETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 7)
29 #define F_GETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 8)
30
31 /*
32 * Set/Get seals
33 */
34 #define F_ADD_SEALS (F_LINUX_SPECIFIC_BASE + 9)
35 #define F_GET_SEALS (F_LINUX_SPECIFIC_BASE + 10)
36
37 /*
38 * Types of seals
39 */
40 #define F_SEAL_SEAL 0x0001 /* prevent further seals from being set */
41 #define F_SEAL_SHRINK 0x0002 /* prevent file from shrinking */
42 #define F_SEAL_GROW 0x0004 /* prevent file from growing */
43 #define F_SEAL_WRITE 0x0008 /* prevent writes */
44 #define F_SEAL_FUTURE_WRITE 0x0010 /* prevent future writes while mapped */
45 /* (1U << 31) is reserved for signed error codes */
46
47 /*
48 * Set/Get write life time hints. {GET,SET}_RW_HINT operate on the
49 * underlying inode, while {GET,SET}_FILE_RW_HINT operate only on
50 * the specific file.
51 */
52 #define F_GET_RW_HINT (F_LINUX_SPECIFIC_BASE + 11)
53 #define F_SET_RW_HINT (F_LINUX_SPECIFIC_BASE + 12)
54 #define F_GET_FILE_RW_HINT (F_LINUX_SPECIFIC_BASE + 13)
55 #define F_SET_FILE_RW_HINT (F_LINUX_SPECIFIC_BASE + 14)
56
57 /*
58 * Valid hint values for F_{GET,SET}_RW_HINT. 0 is "not set", or can be
59 * used to clear any hints previously set.
60 */
61 #define RWF_WRITE_LIFE_NOT_SET 0
62 #define RWH_WRITE_LIFE_NONE 1
63 #define RWH_WRITE_LIFE_SHORT 2
64 #define RWH_WRITE_LIFE_MEDIUM 3
65 #define RWH_WRITE_LIFE_LONG 4
66 #define RWH_WRITE_LIFE_EXTREME 5
67
68 /*
69 * Types of directory notifications that may be requested.
70 */
71 #define DN_ACCESS 0x00000001 /* File accessed */
72 #define DN_MODIFY 0x00000002 /* File modified */
73 #define DN_CREATE 0x00000004 /* File created */
74 #define DN_DELETE 0x00000008 /* File removed */
75 #define DN_RENAME 0x00000010 /* File renamed */
76 #define DN_ATTRIB 0x00000020 /* File changed attibutes */
77 #define DN_MULTISHOT 0x80000000 /* Don't remove notifier */
78
79 #define AT_FDCWD -100 /* Special value used to indicate
80 openat should use the current
81 working directory. */
82 #define AT_SYMLINK_NOFOLLOW 0x100 /* Do not follow symbolic links. */
83 #define AT_REMOVEDIR 0x200 /* Remove directory instead of
84 unlinking file. */
85 #define AT_SYMLINK_FOLLOW 0x400 /* Follow symbolic links. */
86 #define AT_NO_AUTOMOUNT 0x800 /* Suppress terminal automount traversal */
87 #define AT_EMPTY_PATH 0x1000 /* Allow empty relative pathname */
88
89 #define AT_STATX_SYNC_TYPE 0x6000 /* Type of synchronisation required from statx() */
90 #define AT_STATX_SYNC_AS_STAT 0x0000 /* - Do whatever stat() does */
91 #define AT_STATX_FORCE_SYNC 0x2000 /* - Force the attributes to be sync'd with the server */
92 #define AT_STATX_DONT_SYNC 0x4000 /* - Don't sync attributes with the server */
93
94 #define AT_RECURSIVE 0x8000 /* Apply to the entire subtree */
95
96
97 #endif /* _UAPI_LINUX_FCNTL_H */