1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 #ifndef _UAPI_LINUX_STAT_H
3 #define _UAPI_LINUX_STAT_H
4 
5 #include <linux/types.h>
6 
7 #if defined(__KERNEL__) || !defined(__GLIBC__) || (__GLIBC__ < 2)
8 
9 #define S_IFMT  00170000
10 #define S_IFSOCK 0140000
11 #define S_IFLNK	 0120000
12 #define S_IFREG  0100000
13 #define S_IFBLK  0060000
14 #define S_IFDIR  0040000
15 #define S_IFCHR  0020000
16 #define S_IFIFO  0010000
17 #define S_ISUID  0004000
18 #define S_ISGID  0002000
19 #define S_ISVTX  0001000
20 
21 #define S_ISLNK(m)	(((m) & S_IFMT) == S_IFLNK)
22 #define S_ISREG(m)	(((m) & S_IFMT) == S_IFREG)
23 #define S_ISDIR(m)	(((m) & S_IFMT) == S_IFDIR)
24 #define S_ISCHR(m)	(((m) & S_IFMT) == S_IFCHR)
25 #define S_ISBLK(m)	(((m) & S_IFMT) == S_IFBLK)
26 #define S_ISFIFO(m)	(((m) & S_IFMT) == S_IFIFO)
27 #define S_ISSOCK(m)	(((m) & S_IFMT) == S_IFSOCK)
28 
29 #define S_IRWXU 00700
30 #define S_IRUSR 00400
31 #define S_IWUSR 00200
32 #define S_IXUSR 00100
33 
34 #define S_IRWXG 00070
35 #define S_IRGRP 00040
36 #define S_IWGRP 00020
37 #define S_IXGRP 00010
38 
39 #define S_IRWXO 00007
40 #define S_IROTH 00004
41 #define S_IWOTH 00002
42 #define S_IXOTH 00001
43 
44 #endif
45 
46 /*
47  * Timestamp structure for the timestamps in struct statx.
48  *
49  * tv_sec holds the number of seconds before (negative) or after (positive)
50  * 00:00:00 1st January 1970 UTC.
51  *
52  * tv_nsec holds a number of nanoseconds (0..999,999,999) after the tv_sec time.
53  *
54  * __reserved is held in case we need a yet finer resolution.
55  */
56 struct statx_timestamp {
57 	__s64	tv_sec;
58 	__u32	tv_nsec;
59 	__s32	__reserved;
60 };
61 
62 /*
63  * Structures for the extended file attribute retrieval system call
64  * (statx()).
65  *
66  * The caller passes a mask of what they're specifically interested in as a
67  * parameter to statx().  What statx() actually got will be indicated in
68  * st_mask upon return.
69  *
70  * For each bit in the mask argument:
71  *
72  * - if the datum is not supported:
73  *
74  *   - the bit will be cleared, and
75  *
76  *   - the datum will be set to an appropriate fabricated value if one is
77  *     available (eg. CIFS can take a default uid and gid), otherwise
78  *
79  *   - the field will be cleared;
80  *
81  * - otherwise, if explicitly requested:
82  *
83  *   - the datum will be synchronised to the server if AT_STATX_FORCE_SYNC is
84  *     set or if the datum is considered out of date, and
85  *
86  *   - the field will be filled in and the bit will be set;
87  *
88  * - otherwise, if not requested, but available in approximate form without any
89  *   effort, it will be filled in anyway, and the bit will be set upon return
90  *   (it might not be up to date, however, and no attempt will be made to
91  *   synchronise the internal state first);
92  *
93  * - otherwise the field and the bit will be cleared before returning.
94  *
95  * Items in STATX_BASIC_STATS may be marked unavailable on return, but they
96  * will have values installed for compatibility purposes so that stat() and
97  * co. can be emulated in userspace.
98  */
99 struct statx {
100 	/* 0x00 */
101 	__u32	stx_mask;	/* What results were written [uncond] */
102 	__u32	stx_blksize;	/* Preferred general I/O size [uncond] */
103 	__u64	stx_attributes;	/* Flags conveying information about the file [uncond] */
104 	/* 0x10 */
105 	__u32	stx_nlink;	/* Number of hard links */
106 	__u32	stx_uid;	/* User ID of owner */
107 	__u32	stx_gid;	/* Group ID of owner */
108 	__u16	stx_mode;	/* File mode */
109 	__u16	__spare0[1];
110 	/* 0x20 */
111 	__u64	stx_ino;	/* Inode number */
112 	__u64	stx_size;	/* File size */
113 	__u64	stx_blocks;	/* Number of 512-byte blocks allocated */
114 	__u64	stx_attributes_mask; /* Mask to show what's supported in stx_attributes */
115 	/* 0x40 */
116 	struct statx_timestamp	stx_atime;	/* Last access time */
117 	struct statx_timestamp	stx_btime;	/* File creation time */
118 	struct statx_timestamp	stx_ctime;	/* Last attribute change time */
119 	struct statx_timestamp	stx_mtime;	/* Last data modification time */
120 	/* 0x80 */
121 	__u32	stx_rdev_major;	/* Device ID of special file [if bdev/cdev] */
122 	__u32	stx_rdev_minor;
123 	__u32	stx_dev_major;	/* ID of device containing file [uncond] */
124 	__u32	stx_dev_minor;
125 	/* 0x90 */
126 	__u64	__spare2[14];	/* Spare space for future expansion */
127 	/* 0x100 */
128 };
129 
130 /*
131  * Flags to be stx_mask
132  *
133  * Query request/result mask for statx() and struct statx::stx_mask.
134  *
135  * These bits should be set in the mask argument of statx() to request
136  * particular items when calling statx().
137  */
138 #define STATX_TYPE		0x00000001U	/* Want/got stx_mode & S_IFMT */
139 #define STATX_MODE		0x00000002U	/* Want/got stx_mode & ~S_IFMT */
140 #define STATX_NLINK		0x00000004U	/* Want/got stx_nlink */
141 #define STATX_UID		0x00000008U	/* Want/got stx_uid */
142 #define STATX_GID		0x00000010U	/* Want/got stx_gid */
143 #define STATX_ATIME		0x00000020U	/* Want/got stx_atime */
144 #define STATX_MTIME		0x00000040U	/* Want/got stx_mtime */
145 #define STATX_CTIME		0x00000080U	/* Want/got stx_ctime */
146 #define STATX_INO		0x00000100U	/* Want/got stx_ino */
147 #define STATX_SIZE		0x00000200U	/* Want/got stx_size */
148 #define STATX_BLOCKS		0x00000400U	/* Want/got stx_blocks */
149 #define STATX_BASIC_STATS	0x000007ffU	/* The stuff in the normal stat struct */
150 #define STATX_BTIME		0x00000800U	/* Want/got stx_btime */
151 #define STATX_ALL		0x00000fffU	/* All currently supported flags */
152 #define STATX__RESERVED		0x80000000U	/* Reserved for future struct statx expansion */
153 
154 /*
155  * Attributes to be found in stx_attributes and masked in stx_attributes_mask.
156  *
157  * These give information about the features or the state of a file that might
158  * be of use to ordinary userspace programs such as GUIs or ls rather than
159  * specialised tools.
160  *
161  * Note that the flags marked [I] correspond to generic FS_IOC_FLAGS
162  * semantically.  Where possible, the numerical value is picked to correspond
163  * also.
164  */
165 #define STATX_ATTR_COMPRESSED		0x00000004 /* [I] File is compressed by the fs */
166 #define STATX_ATTR_IMMUTABLE		0x00000010 /* [I] File is marked immutable */
167 #define STATX_ATTR_APPEND		0x00000020 /* [I] File is append-only */
168 #define STATX_ATTR_NODUMP		0x00000040 /* [I] File is not to be dumped */
169 #define STATX_ATTR_ENCRYPTED		0x00000800 /* [I] File requires key to decrypt in fs */
170 
171 #define STATX_ATTR_AUTOMOUNT		0x00001000 /* Dir: Automount trigger */
172 
173 
174 #endif /* _UAPI_LINUX_STAT_H */
175