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Commit | Line | Data |
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e7145211 | 1 | /* SPDX-License-Identifier: GPL-2.0+ */ |
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" |
3ffd4af2 | 19 | #include "fd-util.h" |
21df1465 | 20 | #include "sort-util.h" |
0f4b93c4 | 21 | #include "string-table.h" |
07630cea | 22 | #include "string-util.h" |
ae760f4b | 23 | #include "udev-util.h" |
d6170d27 | 24 | #include "udevadm-util.h" |
0f4b93c4 | 25 | #include "udevadm.h" |
be9b51f6 | 26 | |
668e7c0c ZJS |
27 | typedef enum ActionType { |
28 | ACTION_QUERY, | |
29 | ACTION_ATTRIBUTE_WALK, | |
30 | ACTION_DEVICE_ID_FILE, | |
31 | } ActionType; | |
32 | ||
33 | typedef enum QueryType { | |
34 | QUERY_NAME, | |
35 | QUERY_PATH, | |
36 | QUERY_SYMLINK, | |
37 | QUERY_PROPERTY, | |
38 | QUERY_ALL, | |
39 | } QueryType; | |
40 | ||
41 | static bool arg_root = false; | |
42 | static bool arg_export = false; | |
43 | static const char *arg_export_prefix = NULL; | |
ae760f4b | 44 | static usec_t arg_wait_for_initialization_timeout = 0; |
668e7c0c | 45 | |
9ec6e95b | 46 | static bool skip_attribute(const char *name) { |
5992f362 ZJS |
47 | /* Those are either displayed separately or should not be shown at all. */ |
48 | return STR_IN_SET(name, | |
49 | "uevent", | |
50 | "dev", | |
51 | "modalias", | |
52 | "resource", | |
53 | "driver", | |
54 | "subsystem", | |
55 | "module"); | |
20bee04c KS |
56 | } |
57 | ||
21df1465 YW |
58 | typedef struct SysAttr { |
59 | const char *name; | |
60 | const char *value; | |
61 | } SysAttr; | |
62 | ||
63 | static int sysattr_compare(const SysAttr *a, const SysAttr *b) { | |
64 | return strcmp(a->name, b->name); | |
65 | } | |
66 | ||
67 | static int print_all_attributes(sd_device *device, bool is_parent) { | |
68 | _cleanup_free_ SysAttr *sysattrs = NULL; | |
69 | size_t n_items = 0, n_allocated = 0; | |
13aca847 | 70 | const char *name, *value; |
912541b0 | 71 | |
21df1465 YW |
72 | value = NULL; |
73 | (void) sd_device_get_devpath(device, &value); | |
74 | printf(" looking at %sdevice '%s':\n", is_parent ? "parent " : "", strempty(value)); | |
75 | ||
76 | value = NULL; | |
77 | (void) sd_device_get_sysname(device, &value); | |
78 | printf(" %s==\"%s\"\n", is_parent ? "KERNELS" : "KERNEL", strempty(value)); | |
79 | ||
80 | value = NULL; | |
81 | (void) sd_device_get_subsystem(device, &value); | |
82 | printf(" %s==\"%s\"\n", is_parent ? "SUBSYSTEMS" : "SUBSYSTEM", strempty(value)); | |
83 | ||
84 | value = NULL; | |
85 | (void) sd_device_get_driver(device, &value); | |
86 | printf(" %s==\"%s\"\n", is_parent ? "DRIVERS" : "DRIVER", strempty(value)); | |
87 | ||
6d6308f6 | 88 | FOREACH_DEVICE_SYSATTR(device, name) { |
912541b0 KS |
89 | size_t len; |
90 | ||
912541b0 KS |
91 | if (skip_attribute(name)) |
92 | continue; | |
93 | ||
6d6308f6 MM |
94 | if (sd_device_get_sysattr_value(device, name, &value) < 0) |
95 | continue; | |
96 | ||
912541b0 KS |
97 | /* skip any values that look like a path */ |
98 | if (value[0] == '/') | |
99 | continue; | |
100 | ||
101 | /* skip nonprintable attributes */ | |
102 | len = strlen(value); | |
e7e95424 | 103 | while (len > 0 && isprint((unsigned char) value[len-1])) |
912541b0 | 104 | len--; |
baa30fbc | 105 | if (len > 0) |
912541b0 | 106 | continue; |
912541b0 | 107 | |
21df1465 YW |
108 | if (!GREEDY_REALLOC(sysattrs, n_allocated, n_items + 1)) |
109 | return log_oom(); | |
110 | ||
111 | sysattrs[n_items] = (SysAttr) { | |
112 | .name = name, | |
113 | .value = value, | |
114 | }; | |
115 | n_items++; | |
912541b0 | 116 | } |
21df1465 YW |
117 | |
118 | typesafe_qsort(sysattrs, n_items, sysattr_compare); | |
119 | ||
120 | for (size_t i = 0; i < n_items; i++) | |
121 | printf(" %s{%s}==\"%s\"\n", is_parent ? "ATTRS" : "ATTR", sysattrs[i].name, sysattrs[i].value); | |
122 | ||
d539f791 | 123 | puts(""); |
21df1465 YW |
124 | |
125 | return 0; | |
be9b51f6 KS |
126 | } |
127 | ||
13aca847 YW |
128 | static int print_device_chain(sd_device *device) { |
129 | sd_device *child, *parent; | |
21df1465 | 130 | int r; |
912541b0 KS |
131 | |
132 | printf("\n" | |
133 | "Udevadm info starts with the device specified by the devpath and then\n" | |
134 | "walks up the chain of parent devices. It prints for every device\n" | |
135 | "found, all possible attributes in the udev rules key format.\n" | |
136 | "A rule to match, can be composed by the attributes of the device\n" | |
137 | "and the attributes from one single parent device.\n" | |
138 | "\n"); | |
139 | ||
21df1465 YW |
140 | r = print_all_attributes(device, false); |
141 | if (r < 0) | |
142 | return r; | |
912541b0 | 143 | |
13aca847 | 144 | for (child = device; sd_device_get_parent(child, &parent) >= 0; child = parent) { |
21df1465 YW |
145 | r = print_all_attributes(parent, true); |
146 | if (r < 0) | |
147 | return r; | |
13aca847 | 148 | } |
912541b0 KS |
149 | |
150 | return 0; | |
1aa1e248 KS |
151 | } |
152 | ||
668e7c0c | 153 | static int print_record(sd_device *device) { |
13aca847 | 154 | const char *str, *val; |
912541b0 | 155 | int i; |
912541b0 | 156 | |
13aca847 YW |
157 | (void) sd_device_get_devpath(device, &str); |
158 | printf("P: %s\n", str); | |
912541b0 | 159 | |
d539f791 ZJS |
160 | if (sd_device_get_devname(device, &str) >= 0) { |
161 | assert_se(val = path_startswith(str, "/dev/")); | |
162 | printf("N: %s\n", val); | |
163 | } | |
912541b0 | 164 | |
13aca847 | 165 | if (device_get_devlink_priority(device, &i) >= 0) |
912541b0 KS |
166 | printf("L: %i\n", i); |
167 | ||
d539f791 ZJS |
168 | FOREACH_DEVICE_DEVLINK(device, str) { |
169 | assert_se(val = path_startswith(str, "/dev/")); | |
170 | printf("S: %s\n", val); | |
171 | } | |
13aca847 YW |
172 | |
173 | FOREACH_DEVICE_PROPERTY(device, str, val) | |
174 | printf("E: %s=%s\n", str, val); | |
912541b0 | 175 | |
d539f791 | 176 | puts(""); |
668e7c0c | 177 | return 0; |
31de3a2b KS |
178 | } |
179 | ||
9ec6e95b | 180 | static int stat_device(const char *name, bool export, const char *prefix) { |
912541b0 KS |
181 | struct stat statbuf; |
182 | ||
183 | if (stat(name, &statbuf) != 0) | |
755700bb | 184 | return -errno; |
912541b0 KS |
185 | |
186 | if (export) { | |
13aca847 | 187 | if (!prefix) |
912541b0 | 188 | prefix = "INFO_"; |
1fa2f38f ZJS |
189 | printf("%sMAJOR=%u\n" |
190 | "%sMINOR=%u\n", | |
912541b0 KS |
191 | prefix, major(statbuf.st_dev), |
192 | prefix, minor(statbuf.st_dev)); | |
193 | } else | |
1fa2f38f | 194 | printf("%u:%u\n", major(statbuf.st_dev), minor(statbuf.st_dev)); |
912541b0 | 195 | return 0; |
f338bac8 KS |
196 | } |
197 | ||
2024ed61 | 198 | static int export_devices(void) { |
13aca847 YW |
199 | _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL; |
200 | sd_device *d; | |
201 | int r; | |
912541b0 | 202 | |
13aca847 YW |
203 | r = sd_device_enumerator_new(&e); |
204 | if (r < 0) | |
df5a4889 | 205 | return log_oom(); |
755700bb | 206 | |
13aca847 YW |
207 | r = sd_device_enumerator_allow_uninitialized(e); |
208 | if (r < 0) | |
df5a4889 | 209 | return log_error_errno(r, "Failed to set allowing uninitialized flag: %m"); |
912541b0 | 210 | |
13aca847 YW |
211 | r = device_enumerator_scan_devices(e); |
212 | if (r < 0) | |
df5a4889 | 213 | return log_error_errno(r, "Failed to scan devices: %m"); |
13aca847 YW |
214 | |
215 | FOREACH_DEVICE_AND_SUBSYSTEM(e, d) | |
df5a4889 | 216 | (void) print_record(d); |
755700bb | 217 | |
912541b0 | 218 | return 0; |
bf7ad0ea KS |
219 | } |
220 | ||
9ec6e95b | 221 | static void cleanup_dir(DIR *dir, mode_t mask, int depth) { |
912541b0 KS |
222 | struct dirent *dent; |
223 | ||
224 | if (depth <= 0) | |
225 | return; | |
226 | ||
8fb3f009 | 227 | FOREACH_DIRENT_ALL(dent, dir, break) { |
912541b0 KS |
228 | struct stat stats; |
229 | ||
230 | if (dent->d_name[0] == '.') | |
231 | continue; | |
232 | if (fstatat(dirfd(dir), dent->d_name, &stats, AT_SYMLINK_NOFOLLOW) != 0) | |
233 | continue; | |
234 | if ((stats.st_mode & mask) != 0) | |
235 | continue; | |
236 | if (S_ISDIR(stats.st_mode)) { | |
13aca847 | 237 | _cleanup_closedir_ DIR *dir2 = NULL; |
912541b0 KS |
238 | |
239 | dir2 = fdopendir(openat(dirfd(dir), dent->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC)); | |
13aca847 | 240 | if (dir2) |
912541b0 | 241 | cleanup_dir(dir2, mask, depth-1); |
200c7fa6 LP |
242 | |
243 | (void) unlinkat(dirfd(dir), dent->d_name, AT_REMOVEDIR); | |
244 | } else | |
245 | (void) unlinkat(dirfd(dir), dent->d_name, 0); | |
912541b0 | 246 | } |
9ead6627 KS |
247 | } |
248 | ||
2024ed61 | 249 | static void cleanup_db(void) { |
755700bb | 250 | _cleanup_closedir_ DIR *dir1 = NULL, *dir2 = NULL, *dir3 = NULL, *dir4 = NULL, *dir5 = NULL; |
912541b0 | 251 | |
755700bb | 252 | (void) unlink("/run/udev/queue.bin"); |
912541b0 | 253 | |
755700bb | 254 | dir1 = opendir("/run/udev/data"); |
13aca847 | 255 | if (dir1) |
755700bb | 256 | cleanup_dir(dir1, S_ISVTX, 1); |
912541b0 | 257 | |
755700bb | 258 | dir2 = opendir("/run/udev/links"); |
13aca847 | 259 | if (dir2) |
755700bb | 260 | cleanup_dir(dir2, 0, 2); |
912541b0 | 261 | |
755700bb | 262 | dir3 = opendir("/run/udev/tags"); |
13aca847 | 263 | if (dir3) |
755700bb | 264 | cleanup_dir(dir3, 0, 2); |
912541b0 | 265 | |
755700bb | 266 | dir4 = opendir("/run/udev/static_node-tags"); |
13aca847 | 267 | if (dir4) |
755700bb | 268 | cleanup_dir(dir4, 0, 2); |
84b6ad70 | 269 | |
755700bb | 270 | dir5 = opendir("/run/udev/watch"); |
13aca847 | 271 | if (dir5) |
755700bb | 272 | cleanup_dir(dir5, 0, 1); |
9ead6627 KS |
273 | } |
274 | ||
668e7c0c ZJS |
275 | static int query_device(QueryType query, sd_device* device) { |
276 | int r; | |
277 | ||
278 | assert(device); | |
279 | ||
280 | switch(query) { | |
281 | case QUERY_NAME: { | |
282 | const char *node; | |
283 | ||
284 | r = sd_device_get_devname(device, &node); | |
285 | if (r < 0) | |
286 | return log_error_errno(r, "No device node found: %m"); | |
287 | ||
d539f791 ZJS |
288 | if (!arg_root) |
289 | assert_se(node = path_startswith(node, "/dev/")); | |
290 | printf("%s\n", node); | |
668e7c0c ZJS |
291 | return 0; |
292 | } | |
293 | ||
294 | case QUERY_SYMLINK: { | |
d539f791 | 295 | const char *devlink, *prefix = ""; |
668e7c0c ZJS |
296 | |
297 | FOREACH_DEVICE_DEVLINK(device, devlink) { | |
d539f791 ZJS |
298 | if (!arg_root) |
299 | assert_se(devlink = path_startswith(devlink, "/dev/")); | |
300 | printf("%s%s", prefix, devlink); | |
301 | prefix = " "; | |
668e7c0c | 302 | } |
d539f791 | 303 | puts(""); |
668e7c0c ZJS |
304 | return 0; |
305 | } | |
306 | ||
307 | case QUERY_PATH: { | |
308 | const char *devpath; | |
5ac0162c | 309 | |
668e7c0c ZJS |
310 | r = sd_device_get_devpath(device, &devpath); |
311 | if (r < 0) | |
312 | return log_error_errno(r, "Failed to get device path: %m"); | |
313 | ||
314 | printf("%s\n", devpath); | |
315 | return 0; | |
316 | } | |
317 | ||
318 | case QUERY_PROPERTY: { | |
319 | const char *key, *value; | |
320 | ||
321 | FOREACH_DEVICE_PROPERTY(device, key, value) | |
322 | if (arg_export) | |
323 | printf("%s%s='%s'\n", strempty(arg_export_prefix), key, value); | |
324 | else | |
325 | printf("%s=%s\n", key, value); | |
326 | return 0; | |
327 | } | |
328 | ||
329 | case QUERY_ALL: | |
330 | return print_record(device); | |
331 | } | |
332 | ||
333 | assert_not_reached("unknown query type"); | |
334 | return 0; | |
335 | } | |
336 | ||
337 | static int help(void) { | |
5ac0162c LP |
338 | printf("%s info [OPTIONS] [DEVPATH|FILE]\n\n" |
339 | "Query sysfs or the udev database.\n\n" | |
340 | " -h --help Print this message\n" | |
73527992 | 341 | " -V --version Print version of the program\n" |
5ac0162c LP |
342 | " -q --query=TYPE Query device information:\n" |
343 | " name Name of device node\n" | |
344 | " symlink Pointing to node\n" | |
345 | " path sysfs device path\n" | |
346 | " property The device properties\n" | |
347 | " all All values\n" | |
348 | " -p --path=SYSPATH sysfs device path used for query or attribute walk\n" | |
349 | " -n --name=NAME Node or symlink name used for query or attribute walk\n" | |
350 | " -r --root Prepend dev directory to path names\n" | |
351 | " -a --attribute-walk Print all key matches walking along the chain\n" | |
352 | " of parent devices\n" | |
353 | " -d --device-id-of-file=FILE Print major:minor of device containing this file\n" | |
354 | " -x --export Export key/value pairs\n" | |
355 | " -P --export-prefix Export the key name with a prefix\n" | |
356 | " -e --export-db Export the content of the udev database\n" | |
357 | " -c --cleanup-db Clean up the udev database\n" | |
ae760f4b YW |
358 | " -w --wait-for-initialization[=SECONDS]\n" |
359 | " Wait for device to be initialized\n" | |
5ac0162c | 360 | , program_invocation_short_name); |
ee4a776d YW |
361 | |
362 | return 0; | |
5ac0162c LP |
363 | } |
364 | ||
3d05193e | 365 | int info_main(int argc, char *argv[], void *userdata) { |
3c79311a | 366 | _cleanup_strv_free_ char **devices = NULL; |
c4abe719 | 367 | _cleanup_free_ char *name = NULL; |
ee4a776d | 368 | int c, r; |
912541b0 KS |
369 | |
370 | static const struct option options[] = { | |
ae760f4b YW |
371 | { "name", required_argument, NULL, 'n' }, |
372 | { "path", required_argument, NULL, 'p' }, | |
373 | { "query", required_argument, NULL, 'q' }, | |
374 | { "attribute-walk", no_argument, NULL, 'a' }, | |
375 | { "cleanup-db", no_argument, NULL, 'c' }, | |
376 | { "export-db", no_argument, NULL, 'e' }, | |
377 | { "root", no_argument, NULL, 'r' }, | |
378 | { "device-id-of-file", required_argument, NULL, 'd' }, | |
379 | { "export", no_argument, NULL, 'x' }, | |
380 | { "export-prefix", required_argument, NULL, 'P' }, | |
381 | { "wait-for-initialization", optional_argument, NULL, 'w' }, | |
382 | { "version", no_argument, NULL, 'V' }, | |
383 | { "help", no_argument, NULL, 'h' }, | |
912541b0 KS |
384 | {} |
385 | }; | |
386 | ||
668e7c0c ZJS |
387 | ActionType action = ACTION_QUERY; |
388 | QueryType query = QUERY_ALL; | |
912541b0 | 389 | |
ae760f4b | 390 | while ((c = getopt_long(argc, argv, "aced:n:p:q:rxP:w::Vh", options, NULL)) >= 0) |
7643ac9a | 391 | switch (c) { |
ee4a776d | 392 | case 'n': |
3c79311a ZJS |
393 | case 'p': { |
394 | const char *prefix = c == 'n' ? "/dev/" : "/sys/"; | |
395 | char *path; | |
4f5d327a | 396 | |
3c79311a ZJS |
397 | path = path_join(path_startswith(optarg, prefix) ? NULL : prefix, optarg); |
398 | if (!path) | |
399 | return log_oom(); | |
4f5d327a | 400 | |
3c79311a | 401 | r = strv_consume(&devices, path); |
13aca847 | 402 | if (r < 0) |
3c79311a | 403 | return log_oom(); |
912541b0 | 404 | break; |
3c79311a ZJS |
405 | } |
406 | ||
912541b0 KS |
407 | case 'q': |
408 | action = ACTION_QUERY; | |
44433ebd | 409 | if (streq(optarg, "property") || streq(optarg, "env")) |
912541b0 | 410 | query = QUERY_PROPERTY; |
44433ebd | 411 | else if (streq(optarg, "name")) |
912541b0 | 412 | query = QUERY_NAME; |
44433ebd | 413 | else if (streq(optarg, "symlink")) |
912541b0 | 414 | query = QUERY_SYMLINK; |
44433ebd | 415 | else if (streq(optarg, "path")) |
912541b0 | 416 | query = QUERY_PATH; |
44433ebd | 417 | else if (streq(optarg, "all")) |
912541b0 | 418 | query = QUERY_ALL; |
47c8fcbe YW |
419 | else |
420 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "unknown query type"); | |
912541b0 KS |
421 | break; |
422 | case 'r': | |
668e7c0c | 423 | arg_root = true; |
912541b0 | 424 | break; |
912541b0 KS |
425 | case 'd': |
426 | action = ACTION_DEVICE_ID_FILE; | |
1cb7d29d YW |
427 | r = free_and_strdup(&name, optarg); |
428 | if (r < 0) | |
c4abe719 | 429 | return log_oom(); |
912541b0 KS |
430 | break; |
431 | case 'a': | |
432 | action = ACTION_ATTRIBUTE_WALK; | |
433 | break; | |
434 | case 'e': | |
ee4a776d | 435 | return export_devices(); |
912541b0 | 436 | case 'c': |
2024ed61 | 437 | cleanup_db(); |
44433ebd | 438 | return 0; |
912541b0 | 439 | case 'x': |
668e7c0c | 440 | arg_export = true; |
912541b0 KS |
441 | break; |
442 | case 'P': | |
2277e845 | 443 | arg_export = true; |
668e7c0c | 444 | arg_export_prefix = optarg; |
912541b0 | 445 | break; |
ae760f4b YW |
446 | case 'w': |
447 | if (optarg) { | |
448 | r = parse_sec(optarg, &arg_wait_for_initialization_timeout); | |
449 | if (r < 0) | |
450 | return log_error_errno(r, "Failed to parse timeout value: %m"); | |
451 | } else | |
452 | arg_wait_for_initialization_timeout = USEC_INFINITY; | |
453 | break; | |
912541b0 | 454 | case 'V': |
51b006e1 | 455 | return print_version(); |
912541b0 | 456 | case 'h': |
ee4a776d YW |
457 | return help(); |
458 | case '?': | |
459 | return -EINVAL; | |
912541b0 | 460 | default: |
ee4a776d | 461 | assert_not_reached("Unknown option"); |
912541b0 | 462 | } |
912541b0 | 463 | |
3c79311a ZJS |
464 | if (action == ACTION_DEVICE_ID_FILE) { |
465 | if (argv[optind]) | |
668e7c0c | 466 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
3c79311a ZJS |
467 | "Positional arguments are not allowed with -d/--device-id-of-file."); |
468 | assert(name); | |
469 | return stat_device(name, arg_export, arg_export_prefix); | |
668e7c0c | 470 | } |
13aca847 | 471 | |
3c79311a ZJS |
472 | r = strv_extend_strv(&devices, argv + optind, false); |
473 | if (r < 0) | |
474 | return log_error_errno(r, "Failed to build argument list: %m"); | |
19a29798 | 475 | |
3c79311a ZJS |
476 | if (strv_isempty(devices)) |
477 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
478 | "A device name or path is required"); | |
479 | if (action == ACTION_ATTRIBUTE_WALK && strv_length(devices) > 1) | |
480 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
481 | "Only one device may be specified with -a/--attribute-walk"); | |
668e7c0c | 482 | |
3c79311a ZJS |
483 | char **p; |
484 | STRV_FOREACH(p, devices) { | |
485 | _cleanup_(sd_device_unrefp) sd_device *device = NULL; | |
486 | ||
487 | r = find_device(*p, NULL, &device); | |
488 | if (r == -EINVAL) | |
489 | return log_error_errno(r, "Bad argument \"%s\", expected an absolute path in /dev/ or /sys or a unit name: %m", *p); | |
490 | if (r < 0) | |
491 | return log_error_errno(r, "Unknown device \"%s\": %m", *p); | |
492 | ||
ae760f4b | 493 | if (arg_wait_for_initialization_timeout > 0) { |
7a555216 YW |
494 | sd_device *d; |
495 | ||
496 | r = device_wait_for_initialization(device, NULL, arg_wait_for_initialization_timeout, &d); | |
ae760f4b YW |
497 | if (r < 0) |
498 | return r; | |
7a555216 YW |
499 | |
500 | sd_device_unref(device); | |
501 | device = d; | |
ae760f4b YW |
502 | } |
503 | ||
3c79311a ZJS |
504 | if (action == ACTION_QUERY) |
505 | r = query_device(query, device); | |
506 | else if (action == ACTION_ATTRIBUTE_WALK) | |
507 | r = print_device_chain(device); | |
508 | else | |
509 | assert_not_reached("Unknown action"); | |
510 | if (r < 0) | |
511 | return r; | |
912541b0 | 512 | } |
87171e46 | 513 | |
3c79311a | 514 | return 0; |
87171e46 | 515 | } |