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f13467ec | 1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
be9b51f6 | 2 | |
034f35d7 | 3 | #include <ctype.h> |
87171e46 | 4 | #include <errno.h> |
e6c1a2bd | 5 | #include <fcntl.h> |
07630cea LP |
6 | #include <getopt.h> |
7 | #include <stddef.h> | |
8 | #include <stdio.h> | |
492e76c9 | 9 | #include <sys/stat.h> |
07630cea | 10 | #include <unistd.h> |
be9b51f6 | 11 | |
13aca847 YW |
12 | #include "sd-device.h" |
13 | ||
c4abe719 | 14 | #include "alloc-util.h" |
13aca847 YW |
15 | #include "device-enumerator-private.h" |
16 | #include "device-private.h" | |
17 | #include "device-util.h" | |
8fb3f009 | 18 | #include "dirent-util.h" |
a24e3938 | 19 | #include "errno-util.h" |
3ffd4af2 | 20 | #include "fd-util.h" |
21df1465 | 21 | #include "sort-util.h" |
6c1482b2 | 22 | #include "static-destruct.h" |
0f4b93c4 | 23 | #include "string-table.h" |
07630cea | 24 | #include "string-util.h" |
ae760f4b | 25 | #include "udev-util.h" |
d6170d27 | 26 | #include "udevadm-util.h" |
0f4b93c4 | 27 | #include "udevadm.h" |
be9b51f6 | 28 | |
668e7c0c ZJS |
29 | typedef enum ActionType { |
30 | ACTION_QUERY, | |
31 | ACTION_ATTRIBUTE_WALK, | |
32 | ACTION_DEVICE_ID_FILE, | |
33 | } ActionType; | |
34 | ||
35 | typedef enum QueryType { | |
36 | QUERY_NAME, | |
37 | QUERY_PATH, | |
38 | QUERY_SYMLINK, | |
39 | QUERY_PROPERTY, | |
40 | QUERY_ALL, | |
41 | } QueryType; | |
42 | ||
6c1482b2 | 43 | static char **arg_properties = NULL; |
668e7c0c ZJS |
44 | static bool arg_root = false; |
45 | static bool arg_export = false; | |
6c1482b2 | 46 | static bool arg_value = false; |
668e7c0c | 47 | static const char *arg_export_prefix = NULL; |
ae760f4b | 48 | static usec_t arg_wait_for_initialization_timeout = 0; |
668e7c0c | 49 | |
9ec6e95b | 50 | static bool skip_attribute(const char *name) { |
4881a0d2 YW |
51 | assert(name); |
52 | ||
5992f362 ZJS |
53 | /* Those are either displayed separately or should not be shown at all. */ |
54 | return STR_IN_SET(name, | |
55 | "uevent", | |
56 | "dev", | |
57 | "modalias", | |
58 | "resource", | |
59 | "driver", | |
60 | "subsystem", | |
61 | "module"); | |
20bee04c KS |
62 | } |
63 | ||
21df1465 YW |
64 | typedef struct SysAttr { |
65 | const char *name; | |
66 | const char *value; | |
67 | } SysAttr; | |
68 | ||
6c1482b2 FS |
69 | STATIC_DESTRUCTOR_REGISTER(arg_properties, strv_freep); |
70 | ||
21df1465 | 71 | static int sysattr_compare(const SysAttr *a, const SysAttr *b) { |
4881a0d2 YW |
72 | assert(a); |
73 | assert(b); | |
74 | ||
21df1465 YW |
75 | return strcmp(a->name, b->name); |
76 | } | |
77 | ||
78 | static int print_all_attributes(sd_device *device, bool is_parent) { | |
79 | _cleanup_free_ SysAttr *sysattrs = NULL; | |
13aca847 | 80 | const char *name, *value; |
319a4f4b | 81 | size_t n_items = 0; |
3a90bef5 | 82 | int r; |
912541b0 | 83 | |
4881a0d2 YW |
84 | assert(device); |
85 | ||
21df1465 YW |
86 | value = NULL; |
87 | (void) sd_device_get_devpath(device, &value); | |
88 | printf(" looking at %sdevice '%s':\n", is_parent ? "parent " : "", strempty(value)); | |
89 | ||
90 | value = NULL; | |
91 | (void) sd_device_get_sysname(device, &value); | |
92 | printf(" %s==\"%s\"\n", is_parent ? "KERNELS" : "KERNEL", strempty(value)); | |
93 | ||
94 | value = NULL; | |
95 | (void) sd_device_get_subsystem(device, &value); | |
96 | printf(" %s==\"%s\"\n", is_parent ? "SUBSYSTEMS" : "SUBSYSTEM", strempty(value)); | |
97 | ||
98 | value = NULL; | |
99 | (void) sd_device_get_driver(device, &value); | |
100 | printf(" %s==\"%s\"\n", is_parent ? "DRIVERS" : "DRIVER", strempty(value)); | |
101 | ||
6d6308f6 | 102 | FOREACH_DEVICE_SYSATTR(device, name) { |
912541b0 KS |
103 | size_t len; |
104 | ||
912541b0 KS |
105 | if (skip_attribute(name)) |
106 | continue; | |
107 | ||
3a90bef5 YW |
108 | r = sd_device_get_sysattr_value(device, name, &value); |
109 | if (r >= 0) { | |
110 | /* skip any values that look like a path */ | |
111 | if (value[0] == '/') | |
112 | continue; | |
113 | ||
114 | /* skip nonprintable attributes */ | |
115 | len = strlen(value); | |
116 | while (len > 0 && isprint((unsigned char) value[len-1])) | |
117 | len--; | |
118 | if (len > 0) | |
119 | continue; | |
120 | ||
a24e3938 LP |
121 | } else if (ERRNO_IS_PRIVILEGE(r)) |
122 | value = "(not readable)"; | |
3a90bef5 | 123 | else |
912541b0 | 124 | continue; |
912541b0 | 125 | |
319a4f4b | 126 | if (!GREEDY_REALLOC(sysattrs, n_items + 1)) |
21df1465 YW |
127 | return log_oom(); |
128 | ||
129 | sysattrs[n_items] = (SysAttr) { | |
130 | .name = name, | |
131 | .value = value, | |
132 | }; | |
133 | n_items++; | |
912541b0 | 134 | } |
21df1465 YW |
135 | |
136 | typesafe_qsort(sysattrs, n_items, sysattr_compare); | |
137 | ||
138 | for (size_t i = 0; i < n_items; i++) | |
139 | printf(" %s{%s}==\"%s\"\n", is_parent ? "ATTRS" : "ATTR", sysattrs[i].name, sysattrs[i].value); | |
140 | ||
d539f791 | 141 | puts(""); |
21df1465 YW |
142 | |
143 | return 0; | |
be9b51f6 KS |
144 | } |
145 | ||
13aca847 YW |
146 | static int print_device_chain(sd_device *device) { |
147 | sd_device *child, *parent; | |
21df1465 | 148 | int r; |
912541b0 | 149 | |
4881a0d2 YW |
150 | assert(device); |
151 | ||
912541b0 KS |
152 | printf("\n" |
153 | "Udevadm info starts with the device specified by the devpath and then\n" | |
154 | "walks up the chain of parent devices. It prints for every device\n" | |
155 | "found, all possible attributes in the udev rules key format.\n" | |
156 | "A rule to match, can be composed by the attributes of the device\n" | |
157 | "and the attributes from one single parent device.\n" | |
158 | "\n"); | |
159 | ||
21df1465 YW |
160 | r = print_all_attributes(device, false); |
161 | if (r < 0) | |
162 | return r; | |
912541b0 | 163 | |
13aca847 | 164 | for (child = device; sd_device_get_parent(child, &parent) >= 0; child = parent) { |
21df1465 YW |
165 | r = print_all_attributes(parent, true); |
166 | if (r < 0) | |
167 | return r; | |
13aca847 | 168 | } |
912541b0 KS |
169 | |
170 | return 0; | |
1aa1e248 KS |
171 | } |
172 | ||
668e7c0c | 173 | static int print_record(sd_device *device) { |
13aca847 | 174 | const char *str, *val; |
912541b0 | 175 | int i; |
912541b0 | 176 | |
4881a0d2 YW |
177 | assert(device); |
178 | ||
13aca847 YW |
179 | (void) sd_device_get_devpath(device, &str); |
180 | printf("P: %s\n", str); | |
912541b0 | 181 | |
d539f791 ZJS |
182 | if (sd_device_get_devname(device, &str) >= 0) { |
183 | assert_se(val = path_startswith(str, "/dev/")); | |
184 | printf("N: %s\n", val); | |
185 | } | |
912541b0 | 186 | |
13aca847 | 187 | if (device_get_devlink_priority(device, &i) >= 0) |
912541b0 KS |
188 | printf("L: %i\n", i); |
189 | ||
d539f791 ZJS |
190 | FOREACH_DEVICE_DEVLINK(device, str) { |
191 | assert_se(val = path_startswith(str, "/dev/")); | |
192 | printf("S: %s\n", val); | |
193 | } | |
13aca847 YW |
194 | |
195 | FOREACH_DEVICE_PROPERTY(device, str, val) | |
196 | printf("E: %s=%s\n", str, val); | |
912541b0 | 197 | |
d539f791 | 198 | puts(""); |
668e7c0c | 199 | return 0; |
31de3a2b KS |
200 | } |
201 | ||
9ec6e95b | 202 | static int stat_device(const char *name, bool export, const char *prefix) { |
912541b0 KS |
203 | struct stat statbuf; |
204 | ||
4881a0d2 YW |
205 | assert(name); |
206 | ||
912541b0 | 207 | if (stat(name, &statbuf) != 0) |
755700bb | 208 | return -errno; |
912541b0 KS |
209 | |
210 | if (export) { | |
13aca847 | 211 | if (!prefix) |
912541b0 | 212 | prefix = "INFO_"; |
1fa2f38f ZJS |
213 | printf("%sMAJOR=%u\n" |
214 | "%sMINOR=%u\n", | |
912541b0 KS |
215 | prefix, major(statbuf.st_dev), |
216 | prefix, minor(statbuf.st_dev)); | |
217 | } else | |
1fa2f38f | 218 | printf("%u:%u\n", major(statbuf.st_dev), minor(statbuf.st_dev)); |
912541b0 | 219 | return 0; |
f338bac8 KS |
220 | } |
221 | ||
2024ed61 | 222 | static int export_devices(void) { |
13aca847 YW |
223 | _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL; |
224 | sd_device *d; | |
225 | int r; | |
912541b0 | 226 | |
13aca847 YW |
227 | r = sd_device_enumerator_new(&e); |
228 | if (r < 0) | |
df5a4889 | 229 | return log_oom(); |
755700bb | 230 | |
13aca847 YW |
231 | r = sd_device_enumerator_allow_uninitialized(e); |
232 | if (r < 0) | |
df5a4889 | 233 | return log_error_errno(r, "Failed to set allowing uninitialized flag: %m"); |
912541b0 | 234 | |
13aca847 YW |
235 | r = device_enumerator_scan_devices(e); |
236 | if (r < 0) | |
df5a4889 | 237 | return log_error_errno(r, "Failed to scan devices: %m"); |
13aca847 YW |
238 | |
239 | FOREACH_DEVICE_AND_SUBSYSTEM(e, d) | |
df5a4889 | 240 | (void) print_record(d); |
755700bb | 241 | |
912541b0 | 242 | return 0; |
bf7ad0ea KS |
243 | } |
244 | ||
9ec6e95b | 245 | static void cleanup_dir(DIR *dir, mode_t mask, int depth) { |
4881a0d2 YW |
246 | assert(dir); |
247 | ||
912541b0 KS |
248 | if (depth <= 0) |
249 | return; | |
250 | ||
8fb3f009 | 251 | FOREACH_DIRENT_ALL(dent, dir, break) { |
912541b0 KS |
252 | struct stat stats; |
253 | ||
28d6e854 | 254 | if (dot_or_dot_dot(dent->d_name)) |
912541b0 | 255 | continue; |
28d6e854 | 256 | if (fstatat(dirfd(dir), dent->d_name, &stats, AT_SYMLINK_NOFOLLOW) < 0) |
912541b0 KS |
257 | continue; |
258 | if ((stats.st_mode & mask) != 0) | |
259 | continue; | |
260 | if (S_ISDIR(stats.st_mode)) { | |
13aca847 | 261 | _cleanup_closedir_ DIR *dir2 = NULL; |
912541b0 KS |
262 | |
263 | dir2 = fdopendir(openat(dirfd(dir), dent->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC)); | |
13aca847 | 264 | if (dir2) |
912541b0 | 265 | cleanup_dir(dir2, mask, depth-1); |
200c7fa6 LP |
266 | |
267 | (void) unlinkat(dirfd(dir), dent->d_name, AT_REMOVEDIR); | |
268 | } else | |
269 | (void) unlinkat(dirfd(dir), dent->d_name, 0); | |
912541b0 | 270 | } |
9ead6627 KS |
271 | } |
272 | ||
7ec62414 MW |
273 | /* |
274 | * Assume that dir is a directory with file names matching udev data base | |
275 | * entries for devices in /run/udev/data (such as "b8:16"), and removes | |
276 | * all files except those that haven't been deleted in /run/udev/data | |
277 | * (i.e. they were skipped during db cleanup because of the db_persist flag). | |
7ec62414 | 278 | */ |
636ab001 | 279 | static void cleanup_dir_after_db_cleanup(DIR *dir, DIR *datadir) { |
9e0bd1d6 YW |
280 | assert(dir); |
281 | assert(datadir); | |
7ec62414 MW |
282 | |
283 | FOREACH_DIRENT_ALL(dent, dir, break) { | |
7ec62414 MW |
284 | if (dot_or_dot_dot(dent->d_name)) |
285 | continue; | |
636ab001 YW |
286 | |
287 | if (faccessat(dirfd(datadir), dent->d_name, F_OK, AT_SYMLINK_NOFOLLOW) >= 0) | |
288 | /* The corresponding udev database file still exists. | |
289 | * Assuming the parsistent flag is set for the database. */ | |
7ec62414 | 290 | continue; |
7ec62414 | 291 | |
636ab001 | 292 | (void) unlinkat(dirfd(dir), dent->d_name, 0); |
7ec62414 | 293 | } |
7ec62414 MW |
294 | } |
295 | ||
296 | static void cleanup_dirs_after_db_cleanup(DIR *dir, DIR *datadir) { | |
9e0bd1d6 YW |
297 | assert(dir); |
298 | assert(datadir); | |
7ec62414 MW |
299 | |
300 | FOREACH_DIRENT_ALL(dent, dir, break) { | |
301 | struct stat stats; | |
302 | ||
303 | if (dot_or_dot_dot(dent->d_name)) | |
304 | continue; | |
305 | if (fstatat(dirfd(dir), dent->d_name, &stats, AT_SYMLINK_NOFOLLOW) < 0) | |
306 | continue; | |
307 | if (S_ISDIR(stats.st_mode)) { | |
308 | _cleanup_closedir_ DIR *dir2 = NULL; | |
309 | ||
310 | dir2 = fdopendir(openat(dirfd(dir), dent->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC)); | |
636ab001 YW |
311 | if (dir2) |
312 | cleanup_dir_after_db_cleanup(dir2, datadir); | |
313 | ||
314 | (void) unlinkat(dirfd(dir), dent->d_name, AT_REMOVEDIR); | |
7ec62414 MW |
315 | } else |
316 | (void) unlinkat(dirfd(dir), dent->d_name, 0); | |
317 | } | |
318 | } | |
319 | ||
2024ed61 | 320 | static void cleanup_db(void) { |
bd979801 | 321 | _cleanup_closedir_ DIR *dir1 = NULL, *dir2 = NULL, *dir3 = NULL, *dir4 = NULL; |
912541b0 | 322 | |
755700bb | 323 | dir1 = opendir("/run/udev/data"); |
13aca847 | 324 | if (dir1) |
755700bb | 325 | cleanup_dir(dir1, S_ISVTX, 1); |
912541b0 | 326 | |
755700bb | 327 | dir2 = opendir("/run/udev/links"); |
13aca847 | 328 | if (dir2) |
7ec62414 | 329 | cleanup_dirs_after_db_cleanup(dir2, dir1); |
912541b0 | 330 | |
755700bb | 331 | dir3 = opendir("/run/udev/tags"); |
13aca847 | 332 | if (dir3) |
7ec62414 | 333 | cleanup_dirs_after_db_cleanup(dir3, dir1); |
912541b0 | 334 | |
755700bb | 335 | dir4 = opendir("/run/udev/static_node-tags"); |
13aca847 | 336 | if (dir4) |
755700bb | 337 | cleanup_dir(dir4, 0, 2); |
84b6ad70 | 338 | |
bd979801 YW |
339 | /* Do not remove /run/udev/watch. It will be handled by udevd well on restart. |
340 | * And should not be removed by external program when udevd is running. */ | |
9ead6627 KS |
341 | } |
342 | ||
668e7c0c ZJS |
343 | static int query_device(QueryType query, sd_device* device) { |
344 | int r; | |
345 | ||
346 | assert(device); | |
347 | ||
348 | switch(query) { | |
349 | case QUERY_NAME: { | |
350 | const char *node; | |
351 | ||
352 | r = sd_device_get_devname(device, &node); | |
353 | if (r < 0) | |
354 | return log_error_errno(r, "No device node found: %m"); | |
355 | ||
d539f791 ZJS |
356 | if (!arg_root) |
357 | assert_se(node = path_startswith(node, "/dev/")); | |
358 | printf("%s\n", node); | |
668e7c0c ZJS |
359 | return 0; |
360 | } | |
361 | ||
362 | case QUERY_SYMLINK: { | |
d539f791 | 363 | const char *devlink, *prefix = ""; |
668e7c0c ZJS |
364 | |
365 | FOREACH_DEVICE_DEVLINK(device, devlink) { | |
d539f791 ZJS |
366 | if (!arg_root) |
367 | assert_se(devlink = path_startswith(devlink, "/dev/")); | |
368 | printf("%s%s", prefix, devlink); | |
369 | prefix = " "; | |
668e7c0c | 370 | } |
d539f791 | 371 | puts(""); |
668e7c0c ZJS |
372 | return 0; |
373 | } | |
374 | ||
375 | case QUERY_PATH: { | |
376 | const char *devpath; | |
5ac0162c | 377 | |
668e7c0c ZJS |
378 | r = sd_device_get_devpath(device, &devpath); |
379 | if (r < 0) | |
380 | return log_error_errno(r, "Failed to get device path: %m"); | |
381 | ||
382 | printf("%s\n", devpath); | |
383 | return 0; | |
384 | } | |
385 | ||
386 | case QUERY_PROPERTY: { | |
387 | const char *key, *value; | |
388 | ||
6c1482b2 FS |
389 | FOREACH_DEVICE_PROPERTY(device, key, value) { |
390 | if (arg_properties && !strv_contains(arg_properties, key)) | |
391 | continue; | |
392 | ||
668e7c0c ZJS |
393 | if (arg_export) |
394 | printf("%s%s='%s'\n", strempty(arg_export_prefix), key, value); | |
6c1482b2 FS |
395 | else if (arg_value) |
396 | printf("%s\n", value); | |
668e7c0c ZJS |
397 | else |
398 | printf("%s=%s\n", key, value); | |
6c1482b2 FS |
399 | } |
400 | ||
668e7c0c ZJS |
401 | return 0; |
402 | } | |
403 | ||
404 | case QUERY_ALL: | |
405 | return print_record(device); | |
668e7c0c | 406 | |
4881a0d2 YW |
407 | default: |
408 | assert_not_reached(); | |
409 | } | |
668e7c0c ZJS |
410 | } |
411 | ||
412 | static int help(void) { | |
5ac0162c LP |
413 | printf("%s info [OPTIONS] [DEVPATH|FILE]\n\n" |
414 | "Query sysfs or the udev database.\n\n" | |
415 | " -h --help Print this message\n" | |
73527992 | 416 | " -V --version Print version of the program\n" |
5ac0162c LP |
417 | " -q --query=TYPE Query device information:\n" |
418 | " name Name of device node\n" | |
419 | " symlink Pointing to node\n" | |
420 | " path sysfs device path\n" | |
421 | " property The device properties\n" | |
422 | " all All values\n" | |
6c1482b2 FS |
423 | " --property=NAME Show only properties by this name\n" |
424 | " --value When showing properties, print only their values\n" | |
5ac0162c LP |
425 | " -p --path=SYSPATH sysfs device path used for query or attribute walk\n" |
426 | " -n --name=NAME Node or symlink name used for query or attribute walk\n" | |
427 | " -r --root Prepend dev directory to path names\n" | |
428 | " -a --attribute-walk Print all key matches walking along the chain\n" | |
429 | " of parent devices\n" | |
430 | " -d --device-id-of-file=FILE Print major:minor of device containing this file\n" | |
431 | " -x --export Export key/value pairs\n" | |
432 | " -P --export-prefix Export the key name with a prefix\n" | |
433 | " -e --export-db Export the content of the udev database\n" | |
434 | " -c --cleanup-db Clean up the udev database\n" | |
ae760f4b | 435 | " -w --wait-for-initialization[=SECONDS]\n" |
bc556335 DDM |
436 | " Wait for device to be initialized\n", |
437 | program_invocation_short_name); | |
ee4a776d YW |
438 | |
439 | return 0; | |
5ac0162c LP |
440 | } |
441 | ||
3d05193e | 442 | int info_main(int argc, char *argv[], void *userdata) { |
3c79311a | 443 | _cleanup_strv_free_ char **devices = NULL; |
c4abe719 | 444 | _cleanup_free_ char *name = NULL; |
ee4a776d | 445 | int c, r; |
912541b0 | 446 | |
6c1482b2 FS |
447 | enum { |
448 | ARG_PROPERTY = 0x100, | |
449 | ARG_VALUE, | |
450 | }; | |
451 | ||
912541b0 | 452 | static const struct option options[] = { |
6c1482b2 FS |
453 | { "attribute-walk", no_argument, NULL, 'a' }, |
454 | { "cleanup-db", no_argument, NULL, 'c' }, | |
455 | { "device-id-of-file", required_argument, NULL, 'd' }, | |
456 | { "export", no_argument, NULL, 'x' }, | |
457 | { "export-db", no_argument, NULL, 'e' }, | |
458 | { "export-prefix", required_argument, NULL, 'P' }, | |
459 | { "help", no_argument, NULL, 'h' }, | |
460 | { "name", required_argument, NULL, 'n' }, | |
461 | { "path", required_argument, NULL, 'p' }, | |
462 | { "property", required_argument, NULL, ARG_PROPERTY }, | |
463 | { "query", required_argument, NULL, 'q' }, | |
464 | { "root", no_argument, NULL, 'r' }, | |
465 | { "value", no_argument, NULL, ARG_VALUE }, | |
466 | { "version", no_argument, NULL, 'V' }, | |
467 | { "wait-for-initialization", optional_argument, NULL, 'w' }, | |
912541b0 KS |
468 | {} |
469 | }; | |
470 | ||
668e7c0c ZJS |
471 | ActionType action = ACTION_QUERY; |
472 | QueryType query = QUERY_ALL; | |
912541b0 | 473 | |
ae760f4b | 474 | while ((c = getopt_long(argc, argv, "aced:n:p:q:rxP:w::Vh", options, NULL)) >= 0) |
7643ac9a | 475 | switch (c) { |
6c1482b2 FS |
476 | case ARG_PROPERTY: |
477 | /* Make sure that if the empty property list was specified, we won't show any | |
478 | properties. */ | |
479 | if (isempty(optarg) && !arg_properties) { | |
480 | arg_properties = new0(char*, 1); | |
481 | if (!arg_properties) | |
482 | return log_oom(); | |
483 | } else { | |
484 | r = strv_split_and_extend(&arg_properties, optarg, ",", true); | |
485 | if (r < 0) | |
486 | return log_oom(); | |
487 | } | |
488 | break; | |
489 | case ARG_VALUE: | |
490 | arg_value = true; | |
491 | break; | |
ee4a776d | 492 | case 'n': |
3c79311a ZJS |
493 | case 'p': { |
494 | const char *prefix = c == 'n' ? "/dev/" : "/sys/"; | |
495 | char *path; | |
4f5d327a | 496 | |
3c79311a ZJS |
497 | path = path_join(path_startswith(optarg, prefix) ? NULL : prefix, optarg); |
498 | if (!path) | |
499 | return log_oom(); | |
4f5d327a | 500 | |
3c79311a | 501 | r = strv_consume(&devices, path); |
13aca847 | 502 | if (r < 0) |
3c79311a | 503 | return log_oom(); |
912541b0 | 504 | break; |
3c79311a ZJS |
505 | } |
506 | ||
912541b0 KS |
507 | case 'q': |
508 | action = ACTION_QUERY; | |
44433ebd | 509 | if (streq(optarg, "property") || streq(optarg, "env")) |
912541b0 | 510 | query = QUERY_PROPERTY; |
44433ebd | 511 | else if (streq(optarg, "name")) |
912541b0 | 512 | query = QUERY_NAME; |
44433ebd | 513 | else if (streq(optarg, "symlink")) |
912541b0 | 514 | query = QUERY_SYMLINK; |
44433ebd | 515 | else if (streq(optarg, "path")) |
912541b0 | 516 | query = QUERY_PATH; |
44433ebd | 517 | else if (streq(optarg, "all")) |
912541b0 | 518 | query = QUERY_ALL; |
47c8fcbe YW |
519 | else |
520 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "unknown query type"); | |
912541b0 KS |
521 | break; |
522 | case 'r': | |
668e7c0c | 523 | arg_root = true; |
912541b0 | 524 | break; |
912541b0 KS |
525 | case 'd': |
526 | action = ACTION_DEVICE_ID_FILE; | |
1cb7d29d YW |
527 | r = free_and_strdup(&name, optarg); |
528 | if (r < 0) | |
c4abe719 | 529 | return log_oom(); |
912541b0 KS |
530 | break; |
531 | case 'a': | |
532 | action = ACTION_ATTRIBUTE_WALK; | |
533 | break; | |
534 | case 'e': | |
ee4a776d | 535 | return export_devices(); |
912541b0 | 536 | case 'c': |
2024ed61 | 537 | cleanup_db(); |
44433ebd | 538 | return 0; |
912541b0 | 539 | case 'x': |
668e7c0c | 540 | arg_export = true; |
912541b0 KS |
541 | break; |
542 | case 'P': | |
2277e845 | 543 | arg_export = true; |
668e7c0c | 544 | arg_export_prefix = optarg; |
912541b0 | 545 | break; |
ae760f4b YW |
546 | case 'w': |
547 | if (optarg) { | |
548 | r = parse_sec(optarg, &arg_wait_for_initialization_timeout); | |
549 | if (r < 0) | |
550 | return log_error_errno(r, "Failed to parse timeout value: %m"); | |
551 | } else | |
552 | arg_wait_for_initialization_timeout = USEC_INFINITY; | |
553 | break; | |
912541b0 | 554 | case 'V': |
51b006e1 | 555 | return print_version(); |
912541b0 | 556 | case 'h': |
ee4a776d YW |
557 | return help(); |
558 | case '?': | |
559 | return -EINVAL; | |
912541b0 | 560 | default: |
04499a70 | 561 | assert_not_reached(); |
912541b0 | 562 | } |
912541b0 | 563 | |
3c79311a ZJS |
564 | if (action == ACTION_DEVICE_ID_FILE) { |
565 | if (argv[optind]) | |
668e7c0c | 566 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
3c79311a ZJS |
567 | "Positional arguments are not allowed with -d/--device-id-of-file."); |
568 | assert(name); | |
569 | return stat_device(name, arg_export, arg_export_prefix); | |
668e7c0c | 570 | } |
13aca847 | 571 | |
3c79311a ZJS |
572 | r = strv_extend_strv(&devices, argv + optind, false); |
573 | if (r < 0) | |
574 | return log_error_errno(r, "Failed to build argument list: %m"); | |
19a29798 | 575 | |
3c79311a ZJS |
576 | if (strv_isempty(devices)) |
577 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
578 | "A device name or path is required"); | |
579 | if (action == ACTION_ATTRIBUTE_WALK && strv_length(devices) > 1) | |
580 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
581 | "Only one device may be specified with -a/--attribute-walk"); | |
668e7c0c | 582 | |
6c1482b2 FS |
583 | if (arg_export && arg_value) |
584 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
585 | "-x/--export or -P/--export-prefix cannot be used with --value"); | |
586 | ||
3c79311a ZJS |
587 | STRV_FOREACH(p, devices) { |
588 | _cleanup_(sd_device_unrefp) sd_device *device = NULL; | |
589 | ||
590 | r = find_device(*p, NULL, &device); | |
591 | if (r == -EINVAL) | |
592 | return log_error_errno(r, "Bad argument \"%s\", expected an absolute path in /dev/ or /sys or a unit name: %m", *p); | |
593 | if (r < 0) | |
594 | return log_error_errno(r, "Unknown device \"%s\": %m", *p); | |
595 | ||
ae760f4b | 596 | if (arg_wait_for_initialization_timeout > 0) { |
7a555216 YW |
597 | sd_device *d; |
598 | ||
9e3d9067 LP |
599 | r = device_wait_for_initialization( |
600 | device, | |
601 | NULL, | |
602 | usec_add(now(CLOCK_MONOTONIC), arg_wait_for_initialization_timeout), | |
603 | &d); | |
ae760f4b YW |
604 | if (r < 0) |
605 | return r; | |
7a555216 YW |
606 | |
607 | sd_device_unref(device); | |
608 | device = d; | |
ae760f4b YW |
609 | } |
610 | ||
3c79311a ZJS |
611 | if (action == ACTION_QUERY) |
612 | r = query_device(query, device); | |
613 | else if (action == ACTION_ATTRIBUTE_WALK) | |
614 | r = print_device_chain(device); | |
615 | else | |
04499a70 | 616 | assert_not_reached(); |
3c79311a ZJS |
617 | if (r < 0) |
618 | return r; | |
912541b0 | 619 | } |
87171e46 | 620 | |
3c79311a | 621 | return 0; |
87171e46 | 622 | } |