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 | #include <linux/openat2.h> |
7 | |
8 | #define F_SETLEASE (F_LINUX_SPECIFIC_BASE + 0) |
9 | #define F_GETLEASE (F_LINUX_SPECIFIC_BASE + 1) |
10 | |
11 | /* |
12 | * Cancel a blocking posix lock; internal use only until we expose an |
13 | * asynchronous lock api to userspace: |
14 | */ |
15 | #define F_CANCELLK (F_LINUX_SPECIFIC_BASE + 5) |
16 | |
17 | /* Create a file descriptor with FD_CLOEXEC set. */ |
18 | #define F_DUPFD_CLOEXEC (F_LINUX_SPECIFIC_BASE + 6) |
19 | |
20 | /* |
21 | * Request nofications on a directory. |
22 | * See below for events that may be notified. |
23 | */ |
24 | #define F_NOTIFY (F_LINUX_SPECIFIC_BASE+2) |
25 | |
26 | /* |
27 | * Set and get of pipe page size array |
28 | */ |
29 | #define F_SETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 7) |
30 | #define F_GETPIPE_SZ (F_LINUX_SPECIFIC_BASE + 8) |
31 | |
32 | /* |
33 | * Set/Get seals |
34 | */ |
35 | #define F_ADD_SEALS (F_LINUX_SPECIFIC_BASE + 9) |
36 | #define F_GET_SEALS (F_LINUX_SPECIFIC_BASE + 10) |
37 | |
38 | /* |
39 | * Types of seals |
40 | */ |
41 | #define F_SEAL_SEAL 0x0001 /* prevent further seals from being set */ |
42 | #define F_SEAL_SHRINK 0x0002 /* prevent file from shrinking */ |
43 | #define F_SEAL_GROW 0x0004 /* prevent file from growing */ |
44 | #define F_SEAL_WRITE 0x0008 /* prevent writes */ |
45 | #define F_SEAL_FUTURE_WRITE 0x0010 /* prevent future writes while mapped */ |
46 | #define F_SEAL_EXEC 0x0020 /* prevent chmod modifying exec bits */ |
47 | /* (1U << 31) is reserved for signed error codes */ |
48 | |
49 | /* |
50 | * Set/Get write life time hints. {GET,SET}_RW_HINT operate on the |
51 | * underlying inode, while {GET,SET}_FILE_RW_HINT operate only on |
52 | * the specific file. |
53 | */ |
54 | #define F_GET_RW_HINT (F_LINUX_SPECIFIC_BASE + 11) |
55 | #define F_SET_RW_HINT (F_LINUX_SPECIFIC_BASE + 12) |
56 | #define F_GET_FILE_RW_HINT (F_LINUX_SPECIFIC_BASE + 13) |
57 | #define F_SET_FILE_RW_HINT (F_LINUX_SPECIFIC_BASE + 14) |
58 | |
59 | /* |
60 | * Valid hint values for F_{GET,SET}_RW_HINT. 0 is "not set", or can be |
61 | * used to clear any hints previously set. |
62 | */ |
63 | #define RWH_WRITE_LIFE_NOT_SET 0 |
64 | #define RWH_WRITE_LIFE_NONE 1 |
65 | #define RWH_WRITE_LIFE_SHORT 2 |
66 | #define RWH_WRITE_LIFE_MEDIUM 3 |
67 | #define RWH_WRITE_LIFE_LONG 4 |
68 | #define RWH_WRITE_LIFE_EXTREME 5 |
69 | |
70 | /* |
71 | * The originally introduced spelling is remained from the first |
72 | * versions of the patch set that introduced the feature, see commit |
73 | * v4.13-rc1~212^2~51. |
74 | */ |
75 | #define RWF_WRITE_LIFE_NOT_SET RWH_WRITE_LIFE_NOT_SET |
76 | |
77 | /* |
78 | * Types of directory notifications that may be requested. |
79 | */ |
80 | #define DN_ACCESS 0x00000001 /* File accessed */ |
81 | #define DN_MODIFY 0x00000002 /* File modified */ |
82 | #define DN_CREATE 0x00000004 /* File created */ |
83 | #define DN_DELETE 0x00000008 /* File removed */ |
84 | #define DN_RENAME 0x00000010 /* File renamed */ |
85 | #define DN_ATTRIB 0x00000020 /* File changed attibutes */ |
86 | #define DN_MULTISHOT 0x80000000 /* Don't remove notifier */ |
87 | |
88 | /* |
89 | * The constants AT_REMOVEDIR and AT_EACCESS have the same value. AT_EACCESS is |
90 | * meaningful only to faccessat, while AT_REMOVEDIR is meaningful only to |
91 | * unlinkat. The two functions do completely different things and therefore, |
92 | * the flags can be allowed to overlap. For example, passing AT_REMOVEDIR to |
93 | * faccessat would be undefined behavior and thus treating it equivalent to |
94 | * AT_EACCESS is valid undefined behavior. |
95 | */ |
96 | #define AT_FDCWD -100 /* Special value used to indicate |
97 | openat should use the current |
98 | working directory. */ |
99 | #define AT_SYMLINK_NOFOLLOW 0x100 /* Do not follow symbolic links. */ |
100 | #define AT_EACCESS 0x200 /* Test access permitted for |
101 | effective IDs, not real IDs. */ |
102 | #define AT_REMOVEDIR 0x200 /* Remove directory instead of |
103 | unlinking file. */ |
104 | #define AT_SYMLINK_FOLLOW 0x400 /* Follow symbolic links. */ |
105 | #define AT_NO_AUTOMOUNT 0x800 /* Suppress terminal automount traversal */ |
106 | #define AT_EMPTY_PATH 0x1000 /* Allow empty relative pathname */ |
107 | |
108 | #define AT_STATX_SYNC_TYPE 0x6000 /* Type of synchronisation required from statx() */ |
109 | #define AT_STATX_SYNC_AS_STAT 0x0000 /* - Do whatever stat() does */ |
110 | #define AT_STATX_FORCE_SYNC 0x2000 /* - Force the attributes to be sync'd with the server */ |
111 | #define AT_STATX_DONT_SYNC 0x4000 /* - Don't sync attributes with the server */ |
112 | |
113 | #define AT_RECURSIVE 0x8000 /* Apply to the entire subtree */ |
114 | |
115 | /* Flags for name_to_handle_at(2). We reuse AT_ flag space to save bits... */ |
116 | #define AT_HANDLE_FID AT_REMOVEDIR /* file handle is needed to |
117 | compare object identity and may not |
118 | be usable to open_by_handle_at(2) */ |
119 | |
120 | #endif /* _UAPI_LINUX_FCNTL_H */ |
121 | |