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1// SPDX-License-Identifier: GPL-2.0-or-later
2/* Test the statx() system call.
3 *
4 * Note that the output of this program is intended to look like the output of
5 * /bin/stat where possible.
6 *
7 * Copyright (C) 2015 Red Hat, Inc. All Rights Reserved.
8 * Written by David Howells (dhowells@redhat.com)
9 */
10
11#define _GNU_SOURCE
12#define _ATFILE_SOURCE
13#include <stdio.h>
14#include <stdlib.h>
15#include <string.h>
16#include <unistd.h>
17#include <ctype.h>
18#include <errno.h>
19#include <time.h>
20#include <sys/syscall.h>
21#include <sys/types.h>
22#include <linux/stat.h>
23#include <linux/fcntl.h>
24#define statx foo
25#define statx_timestamp foo_timestamp
26#include <sys/stat.h>
27#undef statx
28#undef statx_timestamp
29
30#define AT_STATX_SYNC_TYPE 0x6000
31#define AT_STATX_SYNC_AS_STAT 0x0000
32#define AT_STATX_FORCE_SYNC 0x2000
33#define AT_STATX_DONT_SYNC 0x4000
34
35#ifndef __NR_statx
36#define __NR_statx -1
37#endif
38
39static __attribute__((unused))
40ssize_t statx(int dfd, const char *filename, unsigned flags,
41 unsigned int mask, struct statx *buffer)
42{
43 return syscall(__NR_statx, dfd, filename, flags, mask, buffer);
44}
45
46static void print_time(const char *field, struct statx_timestamp *ts)
47{
48 struct tm tm;
49 time_t tim;
50 char buffer[100];
51 int len;
52
53 tim = ts->tv_sec;
54 if (!localtime_r(&tim, &tm)) {
55 perror("localtime_r");
56 exit(1);
57 }
58 len = strftime(buffer, 100, "%F %T", &tm);
59 if (len == 0) {
60 perror("strftime");
61 exit(1);
62 }
63 printf("%s", field);
64 fwrite(buffer, 1, len, stdout);
65 printf(".%09u", ts->tv_nsec);
66 len = strftime(buffer, 100, "%z", &tm);
67 if (len == 0) {
68 perror("strftime2");
69 exit(1);
70 }
71 fwrite(buffer, 1, len, stdout);
72 printf("\n");
73}
74
75static void dump_statx(struct statx *stx)
76{
77 char buffer[256], ft = '?';
78
79 printf("results=%x\n", stx->stx_mask);
80
81 printf(" ");
82 if (stx->stx_mask & STATX_SIZE)
83 printf(" Size: %-15llu", (unsigned long long)stx->stx_size);
84 if (stx->stx_mask & STATX_BLOCKS)
85 printf(" Blocks: %-10llu", (unsigned long long)stx->stx_blocks);
86 printf(" IO Block: %-6llu", (unsigned long long)stx->stx_blksize);
87 if (stx->stx_mask & STATX_TYPE) {
88 switch (stx->stx_mode & S_IFMT) {
89 case S_IFIFO: printf(" FIFO\n"); ft = 'p'; break;
90 case S_IFCHR: printf(" character special file\n"); ft = 'c'; break;
91 case S_IFDIR: printf(" directory\n"); ft = 'd'; break;
92 case S_IFBLK: printf(" block special file\n"); ft = 'b'; break;
93 case S_IFREG: printf(" regular file\n"); ft = '-'; break;
94 case S_IFLNK: printf(" symbolic link\n"); ft = 'l'; break;
95 case S_IFSOCK: printf(" socket\n"); ft = 's'; break;
96 default:
97 printf(" unknown type (%o)\n", stx->stx_mode & S_IFMT);
98 break;
99 }
100 } else {
101 printf(" no type\n");
102 }
103
104 sprintf(buffer, "%02x:%02x", stx->stx_dev_major, stx->stx_dev_minor);
105 printf("Device: %-15s", buffer);
106 if (stx->stx_mask & STATX_INO)
107 printf(" Inode: %-11llu", (unsigned long long) stx->stx_ino);
108 if (stx->stx_mask & STATX_NLINK)
109 printf(" Links: %-5u", stx->stx_nlink);
110 if (stx->stx_mask & STATX_TYPE) {
111 switch (stx->stx_mode & S_IFMT) {
112 case S_IFBLK:
113 case S_IFCHR:
114 printf(" Device type: %u,%u",
115 stx->stx_rdev_major, stx->stx_rdev_minor);
116 break;
117 }
118 }
119 printf("\n");
120
121 if (stx->stx_mask & STATX_MODE)
122 printf("Access: (%04o/%c%c%c%c%c%c%c%c%c%c) ",
123 stx->stx_mode & 07777,
124 ft,
125 stx->stx_mode & S_IRUSR ? 'r' : '-',
126 stx->stx_mode & S_IWUSR ? 'w' : '-',
127 stx->stx_mode & S_IXUSR ? 'x' : '-',
128 stx->stx_mode & S_IRGRP ? 'r' : '-',
129 stx->stx_mode & S_IWGRP ? 'w' : '-',
130 stx->stx_mode & S_IXGRP ? 'x' : '-',
131 stx->stx_mode & S_IROTH ? 'r' : '-',
132 stx->stx_mode & S_IWOTH ? 'w' : '-',
133 stx->stx_mode & S_IXOTH ? 'x' : '-');
134 if (stx->stx_mask & STATX_UID)
135 printf("Uid: %5d ", stx->stx_uid);
136 if (stx->stx_mask & STATX_GID)
137 printf("Gid: %5d\n", stx->stx_gid);
138
139 if (stx->stx_mask & STATX_ATIME)
140 print_time("Access: ", &stx->stx_atime);
141 if (stx->stx_mask & STATX_MTIME)
142 print_time("Modify: ", &stx->stx_mtime);
143 if (stx->stx_mask & STATX_CTIME)
144 print_time("Change: ", &stx->stx_ctime);
145 if (stx->stx_mask & STATX_BTIME)
146 print_time(" Birth: ", &stx->stx_btime);
147
148 if (stx->stx_attributes_mask) {
149 unsigned char bits, mbits;
150 int loop, byte;
151
152 static char attr_representation[64 + 1] =
153 /* STATX_ATTR_ flags: */
154 "????????" /* 63-56 */
155 "????????" /* 55-48 */
156 "????????" /* 47-40 */
157 "????????" /* 39-32 */
158 "????????" /* 31-24 0x00000000-ff000000 */
159 "????????" /* 23-16 0x00000000-00ff0000 */
160 "???me???" /* 15- 8 0x00000000-0000ff00 */
161 "?dai?c??" /* 7- 0 0x00000000-000000ff */
162 ;
163
164 printf("Attributes: %016llx (",
165 (unsigned long long)stx->stx_attributes);
166 for (byte = 64 - 8; byte >= 0; byte -= 8) {
167 bits = stx->stx_attributes >> byte;
168 mbits = stx->stx_attributes_mask >> byte;
169 for (loop = 7; loop >= 0; loop--) {
170 int bit = byte + loop;
171
172 if (!(mbits & 0x80))
173 putchar('.'); /* Not supported */
174 else if (bits & 0x80)
175 putchar(attr_representation[63 - bit]);
176 else
177 putchar('-'); /* Not set */
178 bits <<= 1;
179 mbits <<= 1;
180 }
181 if (byte)
182 putchar(' ');
183 }
184 printf(")\n");
185 }
186}
187
188static void dump_hex(unsigned long long *data, int from, int to)
189{
190 unsigned offset, print_offset = 1, col = 0;
191
192 from /= 8;
193 to = (to + 7) / 8;
194
195 for (offset = from; offset < to; offset++) {
196 if (print_offset) {
197 printf("%04x: ", offset * 8);
198 print_offset = 0;
199 }
200 printf("%016llx", data[offset]);
201 col++;
202 if ((col & 3) == 0) {
203 printf("\n");
204 print_offset = 1;
205 } else {
206 printf(" ");
207 }
208 }
209
210 if (!print_offset)
211 printf("\n");
212}
213
214int main(int argc, char **argv)
215{
216 struct statx stx;
217 int ret, raw = 0, atflag = AT_SYMLINK_NOFOLLOW;
218
219 unsigned int mask = STATX_ALL;
220
221 for (argv++; *argv; argv++) {
222 if (strcmp(*argv, "-F") == 0) {
223 atflag &= ~AT_STATX_SYNC_TYPE;
224 atflag |= AT_STATX_FORCE_SYNC;
225 continue;
226 }
227 if (strcmp(*argv, "-D") == 0) {
228 atflag &= ~AT_STATX_SYNC_TYPE;
229 atflag |= AT_STATX_DONT_SYNC;
230 continue;
231 }
232 if (strcmp(*argv, "-L") == 0) {
233 atflag &= ~AT_SYMLINK_NOFOLLOW;
234 continue;
235 }
236 if (strcmp(*argv, "-O") == 0) {
237 mask &= ~STATX_BASIC_STATS;
238 continue;
239 }
240 if (strcmp(*argv, "-A") == 0) {
241 atflag |= AT_NO_AUTOMOUNT;
242 continue;
243 }
244 if (strcmp(*argv, "-R") == 0) {
245 raw = 1;
246 continue;
247 }
248
249 memset(&stx, 0xbf, sizeof(stx));
250 ret = statx(AT_FDCWD, *argv, atflag, mask, &stx);
251 printf("statx(%s) = %d\n", *argv, ret);
252 if (ret < 0) {
253 perror(*argv);
254 exit(1);
255 }
256
257 if (raw)
258 dump_hex((unsigned long long *)&stx, 0, sizeof(stx));
259
260 dump_statx(&stx);
261 }
262 return 0;
263}