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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) { |
46512cd9 | 47 | static const char* const skip[] = { |
912541b0 KS |
48 | "uevent", |
49 | "dev", | |
50 | "modalias", | |
51 | "resource", | |
52 | "driver", | |
53 | "subsystem", | |
54 | "module", | |
55 | }; | |
912541b0 | 56 | |
0f4b93c4 | 57 | return string_table_lookup(skip, ELEMENTSOF(skip), name) >= 0; |
20bee04c KS |
58 | } |
59 | ||
21df1465 YW |
60 | typedef struct SysAttr { |
61 | const char *name; | |
62 | const char *value; | |
63 | } SysAttr; | |
64 | ||
65 | static int sysattr_compare(const SysAttr *a, const SysAttr *b) { | |
66 | return strcmp(a->name, b->name); | |
67 | } | |
68 | ||
69 | static int print_all_attributes(sd_device *device, bool is_parent) { | |
70 | _cleanup_free_ SysAttr *sysattrs = NULL; | |
71 | size_t n_items = 0, n_allocated = 0; | |
13aca847 | 72 | const char *name, *value; |
912541b0 | 73 | |
21df1465 YW |
74 | value = NULL; |
75 | (void) sd_device_get_devpath(device, &value); | |
76 | printf(" looking at %sdevice '%s':\n", is_parent ? "parent " : "", strempty(value)); | |
77 | ||
78 | value = NULL; | |
79 | (void) sd_device_get_sysname(device, &value); | |
80 | printf(" %s==\"%s\"\n", is_parent ? "KERNELS" : "KERNEL", strempty(value)); | |
81 | ||
82 | value = NULL; | |
83 | (void) sd_device_get_subsystem(device, &value); | |
84 | printf(" %s==\"%s\"\n", is_parent ? "SUBSYSTEMS" : "SUBSYSTEM", strempty(value)); | |
85 | ||
86 | value = NULL; | |
87 | (void) sd_device_get_driver(device, &value); | |
88 | printf(" %s==\"%s\"\n", is_parent ? "DRIVERS" : "DRIVER", strempty(value)); | |
89 | ||
6d6308f6 | 90 | FOREACH_DEVICE_SYSATTR(device, name) { |
912541b0 KS |
91 | size_t len; |
92 | ||
912541b0 KS |
93 | if (skip_attribute(name)) |
94 | continue; | |
95 | ||
6d6308f6 MM |
96 | if (sd_device_get_sysattr_value(device, name, &value) < 0) |
97 | continue; | |
98 | ||
912541b0 KS |
99 | /* skip any values that look like a path */ |
100 | if (value[0] == '/') | |
101 | continue; | |
102 | ||
103 | /* skip nonprintable attributes */ | |
104 | len = strlen(value); | |
105 | while (len > 0 && isprint(value[len-1])) | |
106 | len--; | |
baa30fbc | 107 | if (len > 0) |
912541b0 | 108 | continue; |
912541b0 | 109 | |
21df1465 YW |
110 | if (!GREEDY_REALLOC(sysattrs, n_allocated, n_items + 1)) |
111 | return log_oom(); | |
112 | ||
113 | sysattrs[n_items] = (SysAttr) { | |
114 | .name = name, | |
115 | .value = value, | |
116 | }; | |
117 | n_items++; | |
912541b0 | 118 | } |
21df1465 YW |
119 | |
120 | typesafe_qsort(sysattrs, n_items, sysattr_compare); | |
121 | ||
122 | for (size_t i = 0; i < n_items; i++) | |
123 | printf(" %s{%s}==\"%s\"\n", is_parent ? "ATTRS" : "ATTR", sysattrs[i].name, sysattrs[i].value); | |
124 | ||
d539f791 | 125 | puts(""); |
21df1465 YW |
126 | |
127 | return 0; | |
be9b51f6 KS |
128 | } |
129 | ||
13aca847 YW |
130 | static int print_device_chain(sd_device *device) { |
131 | sd_device *child, *parent; | |
21df1465 | 132 | int r; |
912541b0 KS |
133 | |
134 | printf("\n" | |
135 | "Udevadm info starts with the device specified by the devpath and then\n" | |
136 | "walks up the chain of parent devices. It prints for every device\n" | |
137 | "found, all possible attributes in the udev rules key format.\n" | |
138 | "A rule to match, can be composed by the attributes of the device\n" | |
139 | "and the attributes from one single parent device.\n" | |
140 | "\n"); | |
141 | ||
21df1465 YW |
142 | r = print_all_attributes(device, false); |
143 | if (r < 0) | |
144 | return r; | |
912541b0 | 145 | |
13aca847 | 146 | for (child = device; sd_device_get_parent(child, &parent) >= 0; child = parent) { |
21df1465 YW |
147 | r = print_all_attributes(parent, true); |
148 | if (r < 0) | |
149 | return r; | |
13aca847 | 150 | } |
912541b0 KS |
151 | |
152 | return 0; | |
1aa1e248 KS |
153 | } |
154 | ||
668e7c0c | 155 | static int print_record(sd_device *device) { |
13aca847 | 156 | const char *str, *val; |
912541b0 | 157 | int i; |
912541b0 | 158 | |
13aca847 YW |
159 | (void) sd_device_get_devpath(device, &str); |
160 | printf("P: %s\n", str); | |
912541b0 | 161 | |
d539f791 ZJS |
162 | if (sd_device_get_devname(device, &str) >= 0) { |
163 | assert_se(val = path_startswith(str, "/dev/")); | |
164 | printf("N: %s\n", val); | |
165 | } | |
912541b0 | 166 | |
13aca847 | 167 | if (device_get_devlink_priority(device, &i) >= 0) |
912541b0 KS |
168 | printf("L: %i\n", i); |
169 | ||
d539f791 ZJS |
170 | FOREACH_DEVICE_DEVLINK(device, str) { |
171 | assert_se(val = path_startswith(str, "/dev/")); | |
172 | printf("S: %s\n", val); | |
173 | } | |
13aca847 YW |
174 | |
175 | FOREACH_DEVICE_PROPERTY(device, str, val) | |
176 | printf("E: %s=%s\n", str, val); | |
912541b0 | 177 | |
d539f791 | 178 | puts(""); |
668e7c0c | 179 | return 0; |
31de3a2b KS |
180 | } |
181 | ||
9ec6e95b | 182 | static int stat_device(const char *name, bool export, const char *prefix) { |
912541b0 KS |
183 | struct stat statbuf; |
184 | ||
185 | if (stat(name, &statbuf) != 0) | |
755700bb | 186 | return -errno; |
912541b0 KS |
187 | |
188 | if (export) { | |
13aca847 | 189 | if (!prefix) |
912541b0 | 190 | prefix = "INFO_"; |
1fa2f38f ZJS |
191 | printf("%sMAJOR=%u\n" |
192 | "%sMINOR=%u\n", | |
912541b0 KS |
193 | prefix, major(statbuf.st_dev), |
194 | prefix, minor(statbuf.st_dev)); | |
195 | } else | |
1fa2f38f | 196 | printf("%u:%u\n", major(statbuf.st_dev), minor(statbuf.st_dev)); |
912541b0 | 197 | return 0; |
f338bac8 KS |
198 | } |
199 | ||
2024ed61 | 200 | static int export_devices(void) { |
13aca847 YW |
201 | _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL; |
202 | sd_device *d; | |
203 | int r; | |
912541b0 | 204 | |
13aca847 YW |
205 | r = sd_device_enumerator_new(&e); |
206 | if (r < 0) | |
df5a4889 | 207 | return log_oom(); |
755700bb | 208 | |
13aca847 YW |
209 | r = sd_device_enumerator_allow_uninitialized(e); |
210 | if (r < 0) | |
df5a4889 | 211 | return log_error_errno(r, "Failed to set allowing uninitialized flag: %m"); |
912541b0 | 212 | |
13aca847 YW |
213 | r = device_enumerator_scan_devices(e); |
214 | if (r < 0) | |
df5a4889 | 215 | return log_error_errno(r, "Failed to scan devices: %m"); |
13aca847 YW |
216 | |
217 | FOREACH_DEVICE_AND_SUBSYSTEM(e, d) | |
df5a4889 | 218 | (void) print_record(d); |
755700bb | 219 | |
912541b0 | 220 | return 0; |
bf7ad0ea KS |
221 | } |
222 | ||
9ec6e95b | 223 | static void cleanup_dir(DIR *dir, mode_t mask, int depth) { |
912541b0 KS |
224 | struct dirent *dent; |
225 | ||
226 | if (depth <= 0) | |
227 | return; | |
228 | ||
8fb3f009 | 229 | FOREACH_DIRENT_ALL(dent, dir, break) { |
912541b0 KS |
230 | struct stat stats; |
231 | ||
232 | if (dent->d_name[0] == '.') | |
233 | continue; | |
234 | if (fstatat(dirfd(dir), dent->d_name, &stats, AT_SYMLINK_NOFOLLOW) != 0) | |
235 | continue; | |
236 | if ((stats.st_mode & mask) != 0) | |
237 | continue; | |
238 | if (S_ISDIR(stats.st_mode)) { | |
13aca847 | 239 | _cleanup_closedir_ DIR *dir2 = NULL; |
912541b0 KS |
240 | |
241 | dir2 = fdopendir(openat(dirfd(dir), dent->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC)); | |
13aca847 | 242 | if (dir2) |
912541b0 | 243 | cleanup_dir(dir2, mask, depth-1); |
200c7fa6 LP |
244 | |
245 | (void) unlinkat(dirfd(dir), dent->d_name, AT_REMOVEDIR); | |
246 | } else | |
247 | (void) unlinkat(dirfd(dir), dent->d_name, 0); | |
912541b0 | 248 | } |
9ead6627 KS |
249 | } |
250 | ||
2024ed61 | 251 | static void cleanup_db(void) { |
755700bb | 252 | _cleanup_closedir_ DIR *dir1 = NULL, *dir2 = NULL, *dir3 = NULL, *dir4 = NULL, *dir5 = NULL; |
912541b0 | 253 | |
755700bb | 254 | (void) unlink("/run/udev/queue.bin"); |
912541b0 | 255 | |
755700bb | 256 | dir1 = opendir("/run/udev/data"); |
13aca847 | 257 | if (dir1) |
755700bb | 258 | cleanup_dir(dir1, S_ISVTX, 1); |
912541b0 | 259 | |
755700bb | 260 | dir2 = opendir("/run/udev/links"); |
13aca847 | 261 | if (dir2) |
755700bb | 262 | cleanup_dir(dir2, 0, 2); |
912541b0 | 263 | |
755700bb | 264 | dir3 = opendir("/run/udev/tags"); |
13aca847 | 265 | if (dir3) |
755700bb | 266 | cleanup_dir(dir3, 0, 2); |
912541b0 | 267 | |
755700bb | 268 | dir4 = opendir("/run/udev/static_node-tags"); |
13aca847 | 269 | if (dir4) |
755700bb | 270 | cleanup_dir(dir4, 0, 2); |
84b6ad70 | 271 | |
755700bb | 272 | dir5 = opendir("/run/udev/watch"); |
13aca847 | 273 | if (dir5) |
755700bb | 274 | cleanup_dir(dir5, 0, 1); |
9ead6627 KS |
275 | } |
276 | ||
668e7c0c ZJS |
277 | static int query_device(QueryType query, sd_device* device) { |
278 | int r; | |
279 | ||
280 | assert(device); | |
281 | ||
282 | switch(query) { | |
283 | case QUERY_NAME: { | |
284 | const char *node; | |
285 | ||
286 | r = sd_device_get_devname(device, &node); | |
287 | if (r < 0) | |
288 | return log_error_errno(r, "No device node found: %m"); | |
289 | ||
d539f791 ZJS |
290 | if (!arg_root) |
291 | assert_se(node = path_startswith(node, "/dev/")); | |
292 | printf("%s\n", node); | |
668e7c0c ZJS |
293 | return 0; |
294 | } | |
295 | ||
296 | case QUERY_SYMLINK: { | |
d539f791 | 297 | const char *devlink, *prefix = ""; |
668e7c0c ZJS |
298 | |
299 | FOREACH_DEVICE_DEVLINK(device, devlink) { | |
d539f791 ZJS |
300 | if (!arg_root) |
301 | assert_se(devlink = path_startswith(devlink, "/dev/")); | |
302 | printf("%s%s", prefix, devlink); | |
303 | prefix = " "; | |
668e7c0c | 304 | } |
d539f791 | 305 | puts(""); |
668e7c0c ZJS |
306 | return 0; |
307 | } | |
308 | ||
309 | case QUERY_PATH: { | |
310 | const char *devpath; | |
5ac0162c | 311 | |
668e7c0c ZJS |
312 | r = sd_device_get_devpath(device, &devpath); |
313 | if (r < 0) | |
314 | return log_error_errno(r, "Failed to get device path: %m"); | |
315 | ||
316 | printf("%s\n", devpath); | |
317 | return 0; | |
318 | } | |
319 | ||
320 | case QUERY_PROPERTY: { | |
321 | const char *key, *value; | |
322 | ||
323 | FOREACH_DEVICE_PROPERTY(device, key, value) | |
324 | if (arg_export) | |
325 | printf("%s%s='%s'\n", strempty(arg_export_prefix), key, value); | |
326 | else | |
327 | printf("%s=%s\n", key, value); | |
328 | return 0; | |
329 | } | |
330 | ||
331 | case QUERY_ALL: | |
332 | return print_record(device); | |
333 | } | |
334 | ||
335 | assert_not_reached("unknown query type"); | |
336 | return 0; | |
337 | } | |
338 | ||
339 | static int help(void) { | |
5ac0162c LP |
340 | printf("%s info [OPTIONS] [DEVPATH|FILE]\n\n" |
341 | "Query sysfs or the udev database.\n\n" | |
342 | " -h --help Print this message\n" | |
73527992 | 343 | " -V --version Print version of the program\n" |
5ac0162c LP |
344 | " -q --query=TYPE Query device information:\n" |
345 | " name Name of device node\n" | |
346 | " symlink Pointing to node\n" | |
347 | " path sysfs device path\n" | |
348 | " property The device properties\n" | |
349 | " all All values\n" | |
350 | " -p --path=SYSPATH sysfs device path used for query or attribute walk\n" | |
351 | " -n --name=NAME Node or symlink name used for query or attribute walk\n" | |
352 | " -r --root Prepend dev directory to path names\n" | |
353 | " -a --attribute-walk Print all key matches walking along the chain\n" | |
354 | " of parent devices\n" | |
355 | " -d --device-id-of-file=FILE Print major:minor of device containing this file\n" | |
356 | " -x --export Export key/value pairs\n" | |
357 | " -P --export-prefix Export the key name with a prefix\n" | |
358 | " -e --export-db Export the content of the udev database\n" | |
359 | " -c --cleanup-db Clean up the udev database\n" | |
ae760f4b YW |
360 | " -w --wait-for-initialization[=SECONDS]\n" |
361 | " Wait for device to be initialized\n" | |
5ac0162c | 362 | , program_invocation_short_name); |
ee4a776d YW |
363 | |
364 | return 0; | |
5ac0162c LP |
365 | } |
366 | ||
3d05193e | 367 | int info_main(int argc, char *argv[], void *userdata) { |
3c79311a | 368 | _cleanup_strv_free_ char **devices = NULL; |
c4abe719 | 369 | _cleanup_free_ char *name = NULL; |
ee4a776d | 370 | int c, r; |
912541b0 KS |
371 | |
372 | static const struct option options[] = { | |
ae760f4b YW |
373 | { "name", required_argument, NULL, 'n' }, |
374 | { "path", required_argument, NULL, 'p' }, | |
375 | { "query", required_argument, NULL, 'q' }, | |
376 | { "attribute-walk", no_argument, NULL, 'a' }, | |
377 | { "cleanup-db", no_argument, NULL, 'c' }, | |
378 | { "export-db", no_argument, NULL, 'e' }, | |
379 | { "root", no_argument, NULL, 'r' }, | |
380 | { "device-id-of-file", required_argument, NULL, 'd' }, | |
381 | { "export", no_argument, NULL, 'x' }, | |
382 | { "export-prefix", required_argument, NULL, 'P' }, | |
383 | { "wait-for-initialization", optional_argument, NULL, 'w' }, | |
384 | { "version", no_argument, NULL, 'V' }, | |
385 | { "help", no_argument, NULL, 'h' }, | |
912541b0 KS |
386 | {} |
387 | }; | |
388 | ||
668e7c0c ZJS |
389 | ActionType action = ACTION_QUERY; |
390 | QueryType query = QUERY_ALL; | |
912541b0 | 391 | |
ae760f4b | 392 | while ((c = getopt_long(argc, argv, "aced:n:p:q:rxP:w::Vh", options, NULL)) >= 0) |
7643ac9a | 393 | switch (c) { |
ee4a776d | 394 | case 'n': |
3c79311a ZJS |
395 | case 'p': { |
396 | const char *prefix = c == 'n' ? "/dev/" : "/sys/"; | |
397 | char *path; | |
4f5d327a | 398 | |
3c79311a ZJS |
399 | path = path_join(path_startswith(optarg, prefix) ? NULL : prefix, optarg); |
400 | if (!path) | |
401 | return log_oom(); | |
4f5d327a | 402 | |
3c79311a | 403 | r = strv_consume(&devices, path); |
13aca847 | 404 | if (r < 0) |
3c79311a | 405 | return log_oom(); |
912541b0 | 406 | break; |
3c79311a ZJS |
407 | } |
408 | ||
912541b0 KS |
409 | case 'q': |
410 | action = ACTION_QUERY; | |
44433ebd | 411 | if (streq(optarg, "property") || streq(optarg, "env")) |
912541b0 | 412 | query = QUERY_PROPERTY; |
44433ebd | 413 | else if (streq(optarg, "name")) |
912541b0 | 414 | query = QUERY_NAME; |
44433ebd | 415 | else if (streq(optarg, "symlink")) |
912541b0 | 416 | query = QUERY_SYMLINK; |
44433ebd | 417 | else if (streq(optarg, "path")) |
912541b0 | 418 | query = QUERY_PATH; |
44433ebd | 419 | else if (streq(optarg, "all")) |
912541b0 | 420 | query = QUERY_ALL; |
47c8fcbe YW |
421 | else |
422 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "unknown query type"); | |
912541b0 KS |
423 | break; |
424 | case 'r': | |
668e7c0c | 425 | arg_root = true; |
912541b0 | 426 | break; |
912541b0 KS |
427 | case 'd': |
428 | action = ACTION_DEVICE_ID_FILE; | |
1cb7d29d YW |
429 | r = free_and_strdup(&name, optarg); |
430 | if (r < 0) | |
c4abe719 | 431 | return log_oom(); |
912541b0 KS |
432 | break; |
433 | case 'a': | |
434 | action = ACTION_ATTRIBUTE_WALK; | |
435 | break; | |
436 | case 'e': | |
ee4a776d | 437 | return export_devices(); |
912541b0 | 438 | case 'c': |
2024ed61 | 439 | cleanup_db(); |
44433ebd | 440 | return 0; |
912541b0 | 441 | case 'x': |
668e7c0c | 442 | arg_export = true; |
912541b0 KS |
443 | break; |
444 | case 'P': | |
2277e845 | 445 | arg_export = true; |
668e7c0c | 446 | arg_export_prefix = optarg; |
912541b0 | 447 | break; |
ae760f4b YW |
448 | case 'w': |
449 | if (optarg) { | |
450 | r = parse_sec(optarg, &arg_wait_for_initialization_timeout); | |
451 | if (r < 0) | |
452 | return log_error_errno(r, "Failed to parse timeout value: %m"); | |
453 | } else | |
454 | arg_wait_for_initialization_timeout = USEC_INFINITY; | |
455 | break; | |
912541b0 | 456 | case 'V': |
51b006e1 | 457 | return print_version(); |
912541b0 | 458 | case 'h': |
ee4a776d YW |
459 | return help(); |
460 | case '?': | |
461 | return -EINVAL; | |
912541b0 | 462 | default: |
ee4a776d | 463 | assert_not_reached("Unknown option"); |
912541b0 | 464 | } |
912541b0 | 465 | |
3c79311a ZJS |
466 | if (action == ACTION_DEVICE_ID_FILE) { |
467 | if (argv[optind]) | |
668e7c0c | 468 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
3c79311a ZJS |
469 | "Positional arguments are not allowed with -d/--device-id-of-file."); |
470 | assert(name); | |
471 | return stat_device(name, arg_export, arg_export_prefix); | |
668e7c0c | 472 | } |
13aca847 | 473 | |
3c79311a ZJS |
474 | r = strv_extend_strv(&devices, argv + optind, false); |
475 | if (r < 0) | |
476 | return log_error_errno(r, "Failed to build argument list: %m"); | |
19a29798 | 477 | |
3c79311a ZJS |
478 | if (strv_isempty(devices)) |
479 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
480 | "A device name or path is required"); | |
481 | if (action == ACTION_ATTRIBUTE_WALK && strv_length(devices) > 1) | |
482 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
483 | "Only one device may be specified with -a/--attribute-walk"); | |
668e7c0c | 484 | |
3c79311a ZJS |
485 | char **p; |
486 | STRV_FOREACH(p, devices) { | |
487 | _cleanup_(sd_device_unrefp) sd_device *device = NULL; | |
488 | ||
489 | r = find_device(*p, NULL, &device); | |
490 | if (r == -EINVAL) | |
491 | return log_error_errno(r, "Bad argument \"%s\", expected an absolute path in /dev/ or /sys or a unit name: %m", *p); | |
492 | if (r < 0) | |
493 | return log_error_errno(r, "Unknown device \"%s\": %m", *p); | |
494 | ||
ae760f4b | 495 | if (arg_wait_for_initialization_timeout > 0) { |
7a555216 YW |
496 | sd_device *d; |
497 | ||
498 | r = device_wait_for_initialization(device, NULL, arg_wait_for_initialization_timeout, &d); | |
ae760f4b YW |
499 | if (r < 0) |
500 | return r; | |
7a555216 YW |
501 | |
502 | sd_device_unref(device); | |
503 | device = d; | |
ae760f4b YW |
504 | } |
505 | ||
3c79311a ZJS |
506 | if (action == ACTION_QUERY) |
507 | r = query_device(query, device); | |
508 | else if (action == ACTION_ATTRIBUTE_WALK) | |
509 | r = print_device_chain(device); | |
510 | else | |
511 | assert_not_reached("Unknown action"); | |
512 | if (r < 0) | |
513 | return r; | |
912541b0 | 514 | } |
87171e46 | 515 | |
3c79311a | 516 | return 0; |
87171e46 | 517 | } |