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 #endif /* _UAPI_LINUX_FCNTL_H */
116