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 */
56struct 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84 *     set or if the datum is considered out of date, and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 */
99struct 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	stx_mnt_id;
127	__u64	__spare2;
128	/* 0xa0 */
129	__u64	__spare3[12];	/* Spare space for future expansion */
130	/* 0x100 */
131};
132
133/*
134 * Flags to be stx_mask
135 *
136 * Query request/result mask for statx() and struct statx::stx_mask.
137 *
138 * These bits should be set in the mask argument of statx() to request
139 * particular items when calling statx().
140 */
141#define STATX_TYPE		0x00000001U	/* Want/got stx_mode & S_IFMT */
142#define STATX_MODE		0x00000002U	/* Want/got stx_mode & ~S_IFMT */
143#define STATX_NLINK		0x00000004U	/* Want/got stx_nlink */
144#define STATX_UID		0x00000008U	/* Want/got stx_uid */
145#define STATX_GID		0x00000010U	/* Want/got stx_gid */
146#define STATX_ATIME		0x00000020U	/* Want/got stx_atime */
147#define STATX_MTIME		0x00000040U	/* Want/got stx_mtime */
148#define STATX_CTIME		0x00000080U	/* Want/got stx_ctime */
149#define STATX_INO		0x00000100U	/* Want/got stx_ino */
150#define STATX_SIZE		0x00000200U	/* Want/got stx_size */
151#define STATX_BLOCKS		0x00000400U	/* Want/got stx_blocks */
152#define STATX_BASIC_STATS	0x000007ffU	/* The stuff in the normal stat struct */
153#define STATX_BTIME		0x00000800U	/* Want/got stx_btime */
154#define STATX_MNT_ID		0x00001000U	/* Got stx_mnt_id */
155
156#define STATX__RESERVED		0x80000000U	/* Reserved for future struct statx expansion */
157
158#ifndef __KERNEL__
159/*
160 * This is deprecated, and shall remain the same value in the future.  To avoid
161 * confusion please use the equivalent (STATX_BASIC_STATS | STATX_BTIME)
162 * instead.
163 */
164#define STATX_ALL		0x00000fffU
165#endif
166
167/*
168 * Attributes to be found in stx_attributes and masked in stx_attributes_mask.
169 *
170 * These give information about the features or the state of a file that might
171 * be of use to ordinary userspace programs such as GUIs or ls rather than
172 * specialised tools.
173 *
174 * Note that the flags marked [I] correspond to the FS_IOC_SETFLAGS flags
175 * semantically.  Where possible, the numerical value is picked to correspond
176 * also.  Note that the DAX attribute indicates that the file is in the CPU
177 * direct access state.  It does not correspond to the per-inode flag that
178 * some filesystems support.
179 *
180 */
181#define STATX_ATTR_COMPRESSED		0x00000004 /* [I] File is compressed by the fs */
182#define STATX_ATTR_IMMUTABLE		0x00000010 /* [I] File is marked immutable */
183#define STATX_ATTR_APPEND		0x00000020 /* [I] File is append-only */
184#define STATX_ATTR_NODUMP		0x00000040 /* [I] File is not to be dumped */
185#define STATX_ATTR_ENCRYPTED		0x00000800 /* [I] File requires key to decrypt in fs */
186#define STATX_ATTR_AUTOMOUNT		0x00001000 /* Dir: Automount trigger */
187#define STATX_ATTR_MOUNT_ROOT		0x00002000 /* Root of a mount */
188#define STATX_ATTR_VERITY		0x00100000 /* [I] Verity protected file */
189#define STATX_ATTR_DAX			0x00200000 /* File is currently in DAX state */
190
191
192#endif /* _UAPI_LINUX_STAT_H */
193