1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */ 
2#ifndef _LINUX_STAT_H 
3#define _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84 * set or if the datum is considered out of date, and 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 __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 /* _LINUX_STAT_H */ 
175