]>
Commit | Line | Data |
---|---|---|
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" |
7b6d1683 | 21 | #include "fileio.h" |
9117d94b LP |
22 | #include "glyph-util.h" |
23 | #include "pager.h" | |
21df1465 | 24 | #include "sort-util.h" |
6c1482b2 | 25 | #include "static-destruct.h" |
0f4b93c4 | 26 | #include "string-table.h" |
07630cea | 27 | #include "string-util.h" |
13005c8f | 28 | #include "terminal-util.h" |
ae760f4b | 29 | #include "udev-util.h" |
0f4b93c4 | 30 | #include "udevadm.h" |
13005c8f | 31 | #include "udevadm-util.h" |
be9b51f6 | 32 | |
668e7c0c ZJS |
33 | typedef enum ActionType { |
34 | ACTION_QUERY, | |
35 | ACTION_ATTRIBUTE_WALK, | |
36 | ACTION_DEVICE_ID_FILE, | |
9117d94b | 37 | ACTION_TREE, |
668e7c0c ZJS |
38 | } ActionType; |
39 | ||
40 | typedef enum QueryType { | |
41 | QUERY_NAME, | |
42 | QUERY_PATH, | |
43 | QUERY_SYMLINK, | |
44 | QUERY_PROPERTY, | |
45 | QUERY_ALL, | |
46 | } QueryType; | |
47 | ||
6c1482b2 | 48 | static char **arg_properties = NULL; |
668e7c0c ZJS |
49 | static bool arg_root = false; |
50 | static bool arg_export = false; | |
6c1482b2 | 51 | static bool arg_value = false; |
668e7c0c | 52 | static const char *arg_export_prefix = NULL; |
ae760f4b | 53 | static usec_t arg_wait_for_initialization_timeout = 0; |
668e7c0c | 54 | |
9117d94b LP |
55 | /* Put a limit on --tree descent level to not exhaust our stack */ |
56 | #define TREE_DEPTH_MAX 64 | |
57 | ||
9ec6e95b | 58 | static bool skip_attribute(const char *name) { |
4881a0d2 YW |
59 | assert(name); |
60 | ||
5992f362 ZJS |
61 | /* Those are either displayed separately or should not be shown at all. */ |
62 | return STR_IN_SET(name, | |
63 | "uevent", | |
64 | "dev", | |
65 | "modalias", | |
66 | "resource", | |
67 | "driver", | |
68 | "subsystem", | |
69 | "module"); | |
20bee04c KS |
70 | } |
71 | ||
21df1465 YW |
72 | typedef struct SysAttr { |
73 | const char *name; | |
74 | const char *value; | |
75 | } SysAttr; | |
76 | ||
6c1482b2 FS |
77 | STATIC_DESTRUCTOR_REGISTER(arg_properties, strv_freep); |
78 | ||
21df1465 | 79 | static int sysattr_compare(const SysAttr *a, const SysAttr *b) { |
4881a0d2 YW |
80 | assert(a); |
81 | assert(b); | |
82 | ||
21df1465 YW |
83 | return strcmp(a->name, b->name); |
84 | } | |
85 | ||
86 | static int print_all_attributes(sd_device *device, bool is_parent) { | |
87 | _cleanup_free_ SysAttr *sysattrs = NULL; | |
13aca847 | 88 | const char *name, *value; |
319a4f4b | 89 | size_t n_items = 0; |
3a90bef5 | 90 | int r; |
912541b0 | 91 | |
4881a0d2 YW |
92 | assert(device); |
93 | ||
21df1465 YW |
94 | value = NULL; |
95 | (void) sd_device_get_devpath(device, &value); | |
96 | printf(" looking at %sdevice '%s':\n", is_parent ? "parent " : "", strempty(value)); | |
97 | ||
98 | value = NULL; | |
99 | (void) sd_device_get_sysname(device, &value); | |
100 | printf(" %s==\"%s\"\n", is_parent ? "KERNELS" : "KERNEL", strempty(value)); | |
101 | ||
102 | value = NULL; | |
103 | (void) sd_device_get_subsystem(device, &value); | |
104 | printf(" %s==\"%s\"\n", is_parent ? "SUBSYSTEMS" : "SUBSYSTEM", strempty(value)); | |
105 | ||
106 | value = NULL; | |
107 | (void) sd_device_get_driver(device, &value); | |
108 | printf(" %s==\"%s\"\n", is_parent ? "DRIVERS" : "DRIVER", strempty(value)); | |
109 | ||
6d6308f6 | 110 | FOREACH_DEVICE_SYSATTR(device, name) { |
912541b0 KS |
111 | size_t len; |
112 | ||
912541b0 KS |
113 | if (skip_attribute(name)) |
114 | continue; | |
115 | ||
3a90bef5 YW |
116 | r = sd_device_get_sysattr_value(device, name, &value); |
117 | if (r >= 0) { | |
118 | /* skip any values that look like a path */ | |
119 | if (value[0] == '/') | |
120 | continue; | |
121 | ||
122 | /* skip nonprintable attributes */ | |
123 | len = strlen(value); | |
124 | while (len > 0 && isprint((unsigned char) value[len-1])) | |
125 | len--; | |
126 | if (len > 0) | |
127 | continue; | |
128 | ||
a24e3938 LP |
129 | } else if (ERRNO_IS_PRIVILEGE(r)) |
130 | value = "(not readable)"; | |
3a90bef5 | 131 | else |
912541b0 | 132 | continue; |
912541b0 | 133 | |
319a4f4b | 134 | if (!GREEDY_REALLOC(sysattrs, n_items + 1)) |
21df1465 YW |
135 | return log_oom(); |
136 | ||
137 | sysattrs[n_items] = (SysAttr) { | |
138 | .name = name, | |
139 | .value = value, | |
140 | }; | |
141 | n_items++; | |
912541b0 | 142 | } |
21df1465 YW |
143 | |
144 | typesafe_qsort(sysattrs, n_items, sysattr_compare); | |
145 | ||
146 | for (size_t i = 0; i < n_items; i++) | |
147 | printf(" %s{%s}==\"%s\"\n", is_parent ? "ATTRS" : "ATTR", sysattrs[i].name, sysattrs[i].value); | |
148 | ||
d539f791 | 149 | puts(""); |
21df1465 YW |
150 | |
151 | return 0; | |
be9b51f6 KS |
152 | } |
153 | ||
13aca847 YW |
154 | static int print_device_chain(sd_device *device) { |
155 | sd_device *child, *parent; | |
21df1465 | 156 | int r; |
912541b0 | 157 | |
4881a0d2 YW |
158 | assert(device); |
159 | ||
912541b0 KS |
160 | printf("\n" |
161 | "Udevadm info starts with the device specified by the devpath and then\n" | |
162 | "walks up the chain of parent devices. It prints for every device\n" | |
163 | "found, all possible attributes in the udev rules key format.\n" | |
164 | "A rule to match, can be composed by the attributes of the device\n" | |
165 | "and the attributes from one single parent device.\n" | |
166 | "\n"); | |
167 | ||
21df1465 YW |
168 | r = print_all_attributes(device, false); |
169 | if (r < 0) | |
170 | return r; | |
912541b0 | 171 | |
13aca847 | 172 | for (child = device; sd_device_get_parent(child, &parent) >= 0; child = parent) { |
21df1465 YW |
173 | r = print_all_attributes(parent, true); |
174 | if (r < 0) | |
175 | return r; | |
13aca847 | 176 | } |
912541b0 KS |
177 | |
178 | return 0; | |
1aa1e248 KS |
179 | } |
180 | ||
9117d94b | 181 | static int print_record(sd_device *device, const char *prefix) { |
a0e90259 LP |
182 | const char *str, *val, *subsys; |
183 | dev_t devnum; | |
184 | uint64_t q; | |
185 | int i, ifi; | |
912541b0 | 186 | |
4881a0d2 YW |
187 | assert(device); |
188 | ||
9117d94b LP |
189 | prefix = strempty(prefix); |
190 | ||
a0e90259 LP |
191 | /* We don't show syspath here, because it's identical to devpath (modulo the "/sys" prefix). |
192 | * | |
193 | * We don't show action/seqnum here because that only makes sense for records synthesized from | |
194 | * uevents, not for those synthesized from database entries. | |
195 | * | |
196 | * We don't show sysattrs here, because they can be expensive and potentially issue expensive driver | |
13005c8f LP |
197 | * IO. |
198 | * | |
199 | * Coloring: let's be conservative with coloring. Let's use it to group related fields. Right now: | |
200 | * | |
201 | * • white for fields that give the device a name | |
202 | * • green for fields that categorize the device into subsystem/devtype and similar | |
203 | * • cyan for fields about associated device nodes/symlinks/network interfaces and such | |
204 | * • magenta for block device diskseq | |
205 | * • yellow for driver info | |
206 | * • no color for regular properties */ | |
a0e90259 LP |
207 | |
208 | assert_se(sd_device_get_devpath(device, &str) >= 0); | |
9117d94b | 209 | printf("%sP: %s%s%s\n", prefix, ansi_highlight_white(), str, ansi_normal()); |
912541b0 | 210 | |
a0e90259 | 211 | if (sd_device_get_sysname(device, &str) >= 0) |
9117d94b | 212 | printf("%sM: %s%s%s\n", prefix, ansi_highlight_white(), str, ansi_normal()); |
a0e90259 LP |
213 | |
214 | if (sd_device_get_sysnum(device, &str) >= 0) | |
9117d94b | 215 | printf("%sR: %s%s%s\n", prefix, ansi_highlight_white(), str, ansi_normal()); |
a0e90259 LP |
216 | |
217 | if (sd_device_get_subsystem(device, &subsys) >= 0) | |
9117d94b | 218 | printf("%sU: %s%s%s\n", prefix, ansi_highlight_green(), subsys, ansi_normal()); |
a0e90259 LP |
219 | |
220 | if (sd_device_get_devtype(device, &str) >= 0) | |
9117d94b | 221 | printf("%sT: %s%s%s\n", prefix, ansi_highlight_green(), str, ansi_normal()); |
a0e90259 LP |
222 | |
223 | if (sd_device_get_devnum(device, &devnum) >= 0) | |
9117d94b LP |
224 | printf("%sD: %s%c %u:%u%s\n", |
225 | prefix, | |
13005c8f LP |
226 | ansi_highlight_cyan(), |
227 | streq_ptr(subsys, "block") ? 'b' : 'c', major(devnum), minor(devnum), | |
228 | ansi_normal()); | |
a0e90259 LP |
229 | |
230 | if (sd_device_get_ifindex(device, &ifi) >= 0) | |
9117d94b | 231 | printf("%sI: %s%i%s\n", prefix, ansi_highlight_cyan(), ifi, ansi_normal()); |
a0e90259 | 232 | |
d539f791 ZJS |
233 | if (sd_device_get_devname(device, &str) >= 0) { |
234 | assert_se(val = path_startswith(str, "/dev/")); | |
9117d94b | 235 | printf("%sN: %s%s%s\n", prefix, ansi_highlight_cyan(), val, ansi_normal()); |
912541b0 | 236 | |
a0e90259 | 237 | if (device_get_devlink_priority(device, &i) >= 0) |
9117d94b | 238 | printf("%sL: %s%i%s\n", prefix, ansi_highlight_cyan(), i, ansi_normal()); |
912541b0 | 239 | |
a0e90259 LP |
240 | FOREACH_DEVICE_DEVLINK(device, str) { |
241 | assert_se(val = path_startswith(str, "/dev/")); | |
9117d94b | 242 | printf("%sS: %s%s%s\n", prefix, ansi_highlight_cyan(), val, ansi_normal()); |
a0e90259 | 243 | } |
d539f791 | 244 | } |
13aca847 | 245 | |
a0e90259 | 246 | if (sd_device_get_diskseq(device, &q) >= 0) |
9117d94b | 247 | printf("%sQ: %s%" PRIu64 "%s\n", prefix, ansi_highlight_magenta(), q, ansi_normal()); |
a0e90259 LP |
248 | |
249 | if (sd_device_get_driver(device, &str) >= 0) | |
9117d94b | 250 | printf("%sV: %s%s%s\n", prefix, ansi_highlight_yellow4(), str, ansi_normal()); |
a0e90259 | 251 | |
13aca847 | 252 | FOREACH_DEVICE_PROPERTY(device, str, val) |
9117d94b | 253 | printf("%sE: %s=%s\n", prefix, str, val); |
912541b0 | 254 | |
9117d94b LP |
255 | if (isempty(prefix)) |
256 | puts(""); | |
668e7c0c | 257 | return 0; |
31de3a2b KS |
258 | } |
259 | ||
9ec6e95b | 260 | static int stat_device(const char *name, bool export, const char *prefix) { |
912541b0 KS |
261 | struct stat statbuf; |
262 | ||
4881a0d2 YW |
263 | assert(name); |
264 | ||
912541b0 | 265 | if (stat(name, &statbuf) != 0) |
755700bb | 266 | return -errno; |
912541b0 KS |
267 | |
268 | if (export) { | |
13aca847 | 269 | if (!prefix) |
912541b0 | 270 | prefix = "INFO_"; |
1fa2f38f ZJS |
271 | printf("%sMAJOR=%u\n" |
272 | "%sMINOR=%u\n", | |
912541b0 KS |
273 | prefix, major(statbuf.st_dev), |
274 | prefix, minor(statbuf.st_dev)); | |
275 | } else | |
1fa2f38f | 276 | printf("%u:%u\n", major(statbuf.st_dev), minor(statbuf.st_dev)); |
912541b0 | 277 | return 0; |
f338bac8 KS |
278 | } |
279 | ||
2024ed61 | 280 | static int export_devices(void) { |
13aca847 YW |
281 | _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL; |
282 | sd_device *d; | |
283 | int r; | |
912541b0 | 284 | |
13aca847 YW |
285 | r = sd_device_enumerator_new(&e); |
286 | if (r < 0) | |
df5a4889 | 287 | return log_oom(); |
755700bb | 288 | |
13aca847 YW |
289 | r = sd_device_enumerator_allow_uninitialized(e); |
290 | if (r < 0) | |
df5a4889 | 291 | return log_error_errno(r, "Failed to set allowing uninitialized flag: %m"); |
912541b0 | 292 | |
13aca847 YW |
293 | r = device_enumerator_scan_devices(e); |
294 | if (r < 0) | |
df5a4889 | 295 | return log_error_errno(r, "Failed to scan devices: %m"); |
13aca847 YW |
296 | |
297 | FOREACH_DEVICE_AND_SUBSYSTEM(e, d) | |
9117d94b | 298 | (void) print_record(d, NULL); |
755700bb | 299 | |
912541b0 | 300 | return 0; |
bf7ad0ea KS |
301 | } |
302 | ||
9ec6e95b | 303 | static void cleanup_dir(DIR *dir, mode_t mask, int depth) { |
4881a0d2 YW |
304 | assert(dir); |
305 | ||
912541b0 KS |
306 | if (depth <= 0) |
307 | return; | |
308 | ||
8fb3f009 | 309 | FOREACH_DIRENT_ALL(dent, dir, break) { |
912541b0 KS |
310 | struct stat stats; |
311 | ||
28d6e854 | 312 | if (dot_or_dot_dot(dent->d_name)) |
912541b0 | 313 | continue; |
28d6e854 | 314 | if (fstatat(dirfd(dir), dent->d_name, &stats, AT_SYMLINK_NOFOLLOW) < 0) |
912541b0 KS |
315 | continue; |
316 | if ((stats.st_mode & mask) != 0) | |
317 | continue; | |
318 | if (S_ISDIR(stats.st_mode)) { | |
7b6d1683 | 319 | _cleanup_closedir_ DIR *subdir = NULL; |
912541b0 | 320 | |
7b6d1683 LP |
321 | subdir = xopendirat(dirfd(dir), dent->d_name, O_NOFOLLOW); |
322 | if (!subdir) | |
323 | log_debug_errno(errno, "Failed to open subdirectory '%s', ignoring: %m", dent->d_name); | |
324 | else | |
325 | cleanup_dir(subdir, mask, depth-1); | |
200c7fa6 LP |
326 | |
327 | (void) unlinkat(dirfd(dir), dent->d_name, AT_REMOVEDIR); | |
328 | } else | |
329 | (void) unlinkat(dirfd(dir), dent->d_name, 0); | |
912541b0 | 330 | } |
9ead6627 KS |
331 | } |
332 | ||
7ec62414 MW |
333 | /* |
334 | * Assume that dir is a directory with file names matching udev data base | |
335 | * entries for devices in /run/udev/data (such as "b8:16"), and removes | |
336 | * all files except those that haven't been deleted in /run/udev/data | |
337 | * (i.e. they were skipped during db cleanup because of the db_persist flag). | |
7ec62414 | 338 | */ |
636ab001 | 339 | static void cleanup_dir_after_db_cleanup(DIR *dir, DIR *datadir) { |
9e0bd1d6 YW |
340 | assert(dir); |
341 | assert(datadir); | |
7ec62414 MW |
342 | |
343 | FOREACH_DIRENT_ALL(dent, dir, break) { | |
7ec62414 MW |
344 | if (dot_or_dot_dot(dent->d_name)) |
345 | continue; | |
636ab001 YW |
346 | |
347 | if (faccessat(dirfd(datadir), dent->d_name, F_OK, AT_SYMLINK_NOFOLLOW) >= 0) | |
348 | /* The corresponding udev database file still exists. | |
349 | * Assuming the parsistent flag is set for the database. */ | |
7ec62414 | 350 | continue; |
7ec62414 | 351 | |
636ab001 | 352 | (void) unlinkat(dirfd(dir), dent->d_name, 0); |
7ec62414 | 353 | } |
7ec62414 MW |
354 | } |
355 | ||
356 | static void cleanup_dirs_after_db_cleanup(DIR *dir, DIR *datadir) { | |
9e0bd1d6 YW |
357 | assert(dir); |
358 | assert(datadir); | |
7ec62414 MW |
359 | |
360 | FOREACH_DIRENT_ALL(dent, dir, break) { | |
361 | struct stat stats; | |
362 | ||
363 | if (dot_or_dot_dot(dent->d_name)) | |
364 | continue; | |
365 | if (fstatat(dirfd(dir), dent->d_name, &stats, AT_SYMLINK_NOFOLLOW) < 0) | |
366 | continue; | |
367 | if (S_ISDIR(stats.st_mode)) { | |
7b6d1683 | 368 | _cleanup_closedir_ DIR *subdir = NULL; |
7ec62414 | 369 | |
7b6d1683 LP |
370 | subdir = xopendirat(dirfd(dir), dent->d_name, O_NOFOLLOW); |
371 | if (!subdir) | |
372 | log_debug_errno(errno, "Failed to open subdirectory '%s', ignoring: %m", dent->d_name); | |
373 | else | |
374 | cleanup_dir_after_db_cleanup(subdir, datadir); | |
636ab001 YW |
375 | |
376 | (void) unlinkat(dirfd(dir), dent->d_name, AT_REMOVEDIR); | |
7ec62414 MW |
377 | } else |
378 | (void) unlinkat(dirfd(dir), dent->d_name, 0); | |
379 | } | |
380 | } | |
381 | ||
2024ed61 | 382 | static void cleanup_db(void) { |
bd979801 | 383 | _cleanup_closedir_ DIR *dir1 = NULL, *dir2 = NULL, *dir3 = NULL, *dir4 = NULL; |
912541b0 | 384 | |
755700bb | 385 | dir1 = opendir("/run/udev/data"); |
13aca847 | 386 | if (dir1) |
755700bb | 387 | cleanup_dir(dir1, S_ISVTX, 1); |
912541b0 | 388 | |
755700bb | 389 | dir2 = opendir("/run/udev/links"); |
13aca847 | 390 | if (dir2) |
7ec62414 | 391 | cleanup_dirs_after_db_cleanup(dir2, dir1); |
912541b0 | 392 | |
755700bb | 393 | dir3 = opendir("/run/udev/tags"); |
13aca847 | 394 | if (dir3) |
7ec62414 | 395 | cleanup_dirs_after_db_cleanup(dir3, dir1); |
912541b0 | 396 | |
755700bb | 397 | dir4 = opendir("/run/udev/static_node-tags"); |
13aca847 | 398 | if (dir4) |
755700bb | 399 | cleanup_dir(dir4, 0, 2); |
84b6ad70 | 400 | |
bd979801 YW |
401 | /* Do not remove /run/udev/watch. It will be handled by udevd well on restart. |
402 | * And should not be removed by external program when udevd is running. */ | |
9ead6627 KS |
403 | } |
404 | ||
668e7c0c ZJS |
405 | static int query_device(QueryType query, sd_device* device) { |
406 | int r; | |
407 | ||
408 | assert(device); | |
409 | ||
79893116 | 410 | switch (query) { |
668e7c0c ZJS |
411 | case QUERY_NAME: { |
412 | const char *node; | |
413 | ||
414 | r = sd_device_get_devname(device, &node); | |
415 | if (r < 0) | |
416 | return log_error_errno(r, "No device node found: %m"); | |
417 | ||
d539f791 ZJS |
418 | if (!arg_root) |
419 | assert_se(node = path_startswith(node, "/dev/")); | |
420 | printf("%s\n", node); | |
668e7c0c ZJS |
421 | return 0; |
422 | } | |
423 | ||
424 | case QUERY_SYMLINK: { | |
d539f791 | 425 | const char *devlink, *prefix = ""; |
668e7c0c ZJS |
426 | |
427 | FOREACH_DEVICE_DEVLINK(device, devlink) { | |
d539f791 ZJS |
428 | if (!arg_root) |
429 | assert_se(devlink = path_startswith(devlink, "/dev/")); | |
430 | printf("%s%s", prefix, devlink); | |
431 | prefix = " "; | |
668e7c0c | 432 | } |
d539f791 | 433 | puts(""); |
668e7c0c ZJS |
434 | return 0; |
435 | } | |
436 | ||
437 | case QUERY_PATH: { | |
438 | const char *devpath; | |
5ac0162c | 439 | |
668e7c0c ZJS |
440 | r = sd_device_get_devpath(device, &devpath); |
441 | if (r < 0) | |
442 | return log_error_errno(r, "Failed to get device path: %m"); | |
443 | ||
444 | printf("%s\n", devpath); | |
445 | return 0; | |
446 | } | |
447 | ||
448 | case QUERY_PROPERTY: { | |
449 | const char *key, *value; | |
450 | ||
6c1482b2 FS |
451 | FOREACH_DEVICE_PROPERTY(device, key, value) { |
452 | if (arg_properties && !strv_contains(arg_properties, key)) | |
453 | continue; | |
454 | ||
668e7c0c ZJS |
455 | if (arg_export) |
456 | printf("%s%s='%s'\n", strempty(arg_export_prefix), key, value); | |
6c1482b2 FS |
457 | else if (arg_value) |
458 | printf("%s\n", value); | |
668e7c0c ZJS |
459 | else |
460 | printf("%s=%s\n", key, value); | |
6c1482b2 FS |
461 | } |
462 | ||
668e7c0c ZJS |
463 | return 0; |
464 | } | |
465 | ||
466 | case QUERY_ALL: | |
9117d94b | 467 | return print_record(device, NULL); |
668e7c0c | 468 | |
4881a0d2 YW |
469 | default: |
470 | assert_not_reached(); | |
471 | } | |
668e7c0c ZJS |
472 | } |
473 | ||
474 | static int help(void) { | |
5ac0162c LP |
475 | printf("%s info [OPTIONS] [DEVPATH|FILE]\n\n" |
476 | "Query sysfs or the udev database.\n\n" | |
477 | " -h --help Print this message\n" | |
73527992 | 478 | " -V --version Print version of the program\n" |
5ac0162c LP |
479 | " -q --query=TYPE Query device information:\n" |
480 | " name Name of device node\n" | |
481 | " symlink Pointing to node\n" | |
482 | " path sysfs device path\n" | |
483 | " property The device properties\n" | |
484 | " all All values\n" | |
6c1482b2 FS |
485 | " --property=NAME Show only properties by this name\n" |
486 | " --value When showing properties, print only their values\n" | |
5ac0162c LP |
487 | " -p --path=SYSPATH sysfs device path used for query or attribute walk\n" |
488 | " -n --name=NAME Node or symlink name used for query or attribute walk\n" | |
489 | " -r --root Prepend dev directory to path names\n" | |
490 | " -a --attribute-walk Print all key matches walking along the chain\n" | |
491 | " of parent devices\n" | |
9117d94b | 492 | " -t --tree Show tree of devices\n" |
5ac0162c LP |
493 | " -d --device-id-of-file=FILE Print major:minor of device containing this file\n" |
494 | " -x --export Export key/value pairs\n" | |
495 | " -P --export-prefix Export the key name with a prefix\n" | |
496 | " -e --export-db Export the content of the udev database\n" | |
497 | " -c --cleanup-db Clean up the udev database\n" | |
ae760f4b | 498 | " -w --wait-for-initialization[=SECONDS]\n" |
bc556335 DDM |
499 | " Wait for device to be initialized\n", |
500 | program_invocation_short_name); | |
ee4a776d YW |
501 | |
502 | return 0; | |
5ac0162c LP |
503 | } |
504 | ||
9117d94b LP |
505 | static int draw_tree( |
506 | sd_device *parent, | |
507 | sd_device *const array[], size_t n, | |
508 | const char *prefix, | |
509 | unsigned level); | |
510 | ||
511 | static int output_tree_device( | |
512 | sd_device *device, | |
513 | const char *str, | |
514 | const char *prefix, | |
515 | bool more, | |
516 | sd_device *const array[], size_t n, | |
517 | unsigned level) { | |
518 | ||
519 | _cleanup_free_ char *subprefix = NULL, *subsubprefix = NULL; | |
520 | ||
521 | assert(device); | |
522 | assert(str); | |
523 | ||
524 | prefix = strempty(prefix); | |
525 | ||
526 | printf("%s%s%s\n", prefix, special_glyph(more ? SPECIAL_GLYPH_TREE_BRANCH : SPECIAL_GLYPH_TREE_RIGHT), str); | |
527 | ||
528 | subprefix = strjoin(prefix, special_glyph(more ? SPECIAL_GLYPH_TREE_VERTICAL : SPECIAL_GLYPH_TREE_SPACE)); | |
529 | if (!subprefix) | |
530 | return log_oom(); | |
531 | ||
532 | subsubprefix = strjoin(subprefix, special_glyph(SPECIAL_GLYPH_VERTICAL_DOTTED), " "); | |
533 | if (!subsubprefix) | |
534 | return log_oom(); | |
535 | ||
536 | (void) print_record(device, subsubprefix); | |
537 | ||
538 | return draw_tree(device, array, n, subprefix, level + 1); | |
539 | } | |
540 | ||
541 | static int draw_tree( | |
542 | sd_device *parent, | |
543 | sd_device *const array[], size_t n, | |
544 | const char *prefix, | |
545 | unsigned level) { | |
546 | ||
547 | const char *parent_path; | |
548 | size_t i = 0; | |
549 | int r; | |
550 | ||
551 | if (n == 0) | |
552 | return 0; | |
553 | ||
554 | assert(array); | |
555 | ||
556 | if (parent) { | |
557 | r = sd_device_get_devpath(parent, &parent_path); | |
558 | if (r < 0) | |
559 | return log_error_errno(r, "Failed to get sysfs path of parent device: %m"); | |
560 | } else | |
561 | parent_path = NULL; | |
562 | ||
563 | if (level > TREE_DEPTH_MAX) { | |
564 | log_warning("Eliding tree below '%s', too deep.", strna(parent_path)); | |
565 | return 0; | |
566 | } | |
567 | ||
568 | while (i < n) { | |
569 | sd_device *device = array[i]; | |
570 | const char *device_path, *str; | |
571 | bool more = false; | |
572 | size_t j; | |
573 | ||
574 | r = sd_device_get_devpath(device, &device_path); | |
575 | if (r < 0) | |
576 | return log_error_errno(r, "Failed to get sysfs path of enumerated device: %m"); | |
577 | ||
578 | /* Scan through the subsequent devices looking children of the device we are looking at. */ | |
579 | for (j = i + 1; j < n; j++) { | |
580 | sd_device *next = array[j]; | |
581 | const char *next_path; | |
582 | ||
583 | r = sd_device_get_devpath(next, &next_path); | |
584 | if (r < 0) | |
585 | return log_error_errno(r, "Failed to get sysfs of child device: %m"); | |
586 | ||
587 | if (!path_startswith(next_path, device_path)) { | |
588 | more = !parent_path || path_startswith(next_path, parent_path); | |
589 | break; | |
590 | } | |
591 | } | |
592 | ||
593 | /* Determine the string to display for this node. If we are at the top of the tree, the full | |
594 | * device path so far, otherwise just the part suffixing the parent's device path. */ | |
595 | str = parent ? ASSERT_PTR(path_startswith(device_path, parent_path)) : device_path; | |
596 | ||
597 | r = output_tree_device(device, str, prefix, more, array + i + 1, j - i - 1, level); | |
598 | if (r < 0) | |
599 | return r; | |
600 | ||
601 | i = j; | |
602 | } | |
603 | ||
604 | return 0; | |
605 | } | |
606 | ||
607 | static int print_tree(sd_device* below) { | |
608 | _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL; | |
609 | const char *below_path; | |
610 | sd_device **array; | |
611 | size_t n = 0; | |
612 | int r; | |
613 | ||
614 | if (below) { | |
615 | r = sd_device_get_devpath(below, &below_path); | |
616 | if (r < 0) | |
617 | return log_error_errno(r, "Failed to get sysfs path of device: %m"); | |
618 | ||
619 | } else | |
620 | below_path = NULL; | |
621 | ||
622 | r = sd_device_enumerator_new(&e); | |
623 | if (r < 0) | |
624 | return log_error_errno(r, "Failed to allocate device enumerator: %m"); | |
625 | ||
626 | if (below) { | |
627 | r = sd_device_enumerator_add_match_parent(e, below); | |
628 | if (r < 0) | |
629 | return log_error_errno(r, "Failed to install parent enumerator match: %m"); | |
630 | } | |
631 | ||
632 | r = sd_device_enumerator_allow_uninitialized(e); | |
633 | if (r < 0) | |
634 | return log_error_errno(r, "Failed to enable enumeration of uninitialized devices: %m"); | |
635 | ||
636 | r = device_enumerator_scan_devices_and_subsystems(e); | |
637 | if (r < 0) | |
638 | return log_error_errno(r, "Failed to scan for devices and subsystems: %m"); | |
639 | ||
bd4297e7 YW |
640 | if (below) { |
641 | /* This must be called after device_enumerator_scan_devices_and_subsystems(). */ | |
642 | r = device_enumerator_add_parent_devices(e, below); | |
643 | if (r < 0) | |
644 | return log_error_errno(r, "Failed to add parent devices: %m"); | |
645 | } | |
646 | ||
9117d94b LP |
647 | assert_se(array = device_enumerator_get_devices(e, &n)); |
648 | ||
649 | if (n == 0) { | |
650 | log_info("No items."); | |
651 | return 0; | |
652 | } | |
653 | ||
654 | r = draw_tree(NULL, array, n, NULL, 0); | |
655 | if (r < 0) | |
656 | return r; | |
657 | ||
658 | printf("\n%zu items shown.\n", n); | |
659 | return 0; | |
660 | } | |
661 | ||
3d05193e | 662 | int info_main(int argc, char *argv[], void *userdata) { |
3c79311a | 663 | _cleanup_strv_free_ char **devices = NULL; |
c4abe719 | 664 | _cleanup_free_ char *name = NULL; |
7ba77d8f | 665 | int c, r, ret; |
912541b0 | 666 | |
6c1482b2 FS |
667 | enum { |
668 | ARG_PROPERTY = 0x100, | |
669 | ARG_VALUE, | |
670 | }; | |
671 | ||
912541b0 | 672 | static const struct option options[] = { |
6c1482b2 | 673 | { "attribute-walk", no_argument, NULL, 'a' }, |
9117d94b | 674 | { "tree", no_argument, NULL, 't' }, |
6c1482b2 FS |
675 | { "cleanup-db", no_argument, NULL, 'c' }, |
676 | { "device-id-of-file", required_argument, NULL, 'd' }, | |
677 | { "export", no_argument, NULL, 'x' }, | |
678 | { "export-db", no_argument, NULL, 'e' }, | |
679 | { "export-prefix", required_argument, NULL, 'P' }, | |
680 | { "help", no_argument, NULL, 'h' }, | |
681 | { "name", required_argument, NULL, 'n' }, | |
682 | { "path", required_argument, NULL, 'p' }, | |
683 | { "property", required_argument, NULL, ARG_PROPERTY }, | |
684 | { "query", required_argument, NULL, 'q' }, | |
685 | { "root", no_argument, NULL, 'r' }, | |
686 | { "value", no_argument, NULL, ARG_VALUE }, | |
687 | { "version", no_argument, NULL, 'V' }, | |
688 | { "wait-for-initialization", optional_argument, NULL, 'w' }, | |
912541b0 KS |
689 | {} |
690 | }; | |
691 | ||
668e7c0c ZJS |
692 | ActionType action = ACTION_QUERY; |
693 | QueryType query = QUERY_ALL; | |
912541b0 | 694 | |
9117d94b | 695 | while ((c = getopt_long(argc, argv, "atced:n:p:q:rxP:w::Vh", options, NULL)) >= 0) |
7643ac9a | 696 | switch (c) { |
6c1482b2 FS |
697 | case ARG_PROPERTY: |
698 | /* Make sure that if the empty property list was specified, we won't show any | |
699 | properties. */ | |
700 | if (isempty(optarg) && !arg_properties) { | |
701 | arg_properties = new0(char*, 1); | |
702 | if (!arg_properties) | |
703 | return log_oom(); | |
704 | } else { | |
705 | r = strv_split_and_extend(&arg_properties, optarg, ",", true); | |
706 | if (r < 0) | |
707 | return log_oom(); | |
708 | } | |
709 | break; | |
710 | case ARG_VALUE: | |
711 | arg_value = true; | |
712 | break; | |
ee4a776d | 713 | case 'n': |
3c79311a ZJS |
714 | case 'p': { |
715 | const char *prefix = c == 'n' ? "/dev/" : "/sys/"; | |
716 | char *path; | |
4f5d327a | 717 | |
3c79311a ZJS |
718 | path = path_join(path_startswith(optarg, prefix) ? NULL : prefix, optarg); |
719 | if (!path) | |
720 | return log_oom(); | |
4f5d327a | 721 | |
3c79311a | 722 | r = strv_consume(&devices, path); |
13aca847 | 723 | if (r < 0) |
3c79311a | 724 | return log_oom(); |
912541b0 | 725 | break; |
3c79311a ZJS |
726 | } |
727 | ||
912541b0 KS |
728 | case 'q': |
729 | action = ACTION_QUERY; | |
44433ebd | 730 | if (streq(optarg, "property") || streq(optarg, "env")) |
912541b0 | 731 | query = QUERY_PROPERTY; |
44433ebd | 732 | else if (streq(optarg, "name")) |
912541b0 | 733 | query = QUERY_NAME; |
44433ebd | 734 | else if (streq(optarg, "symlink")) |
912541b0 | 735 | query = QUERY_SYMLINK; |
44433ebd | 736 | else if (streq(optarg, "path")) |
912541b0 | 737 | query = QUERY_PATH; |
44433ebd | 738 | else if (streq(optarg, "all")) |
912541b0 | 739 | query = QUERY_ALL; |
47c8fcbe YW |
740 | else |
741 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), "unknown query type"); | |
912541b0 KS |
742 | break; |
743 | case 'r': | |
668e7c0c | 744 | arg_root = true; |
912541b0 | 745 | break; |
912541b0 KS |
746 | case 'd': |
747 | action = ACTION_DEVICE_ID_FILE; | |
1cb7d29d YW |
748 | r = free_and_strdup(&name, optarg); |
749 | if (r < 0) | |
c4abe719 | 750 | return log_oom(); |
912541b0 KS |
751 | break; |
752 | case 'a': | |
753 | action = ACTION_ATTRIBUTE_WALK; | |
754 | break; | |
9117d94b LP |
755 | case 't': |
756 | action = ACTION_TREE; | |
757 | break; | |
912541b0 | 758 | case 'e': |
ee4a776d | 759 | return export_devices(); |
912541b0 | 760 | case 'c': |
2024ed61 | 761 | cleanup_db(); |
44433ebd | 762 | return 0; |
912541b0 | 763 | case 'x': |
668e7c0c | 764 | arg_export = true; |
912541b0 KS |
765 | break; |
766 | case 'P': | |
2277e845 | 767 | arg_export = true; |
668e7c0c | 768 | arg_export_prefix = optarg; |
912541b0 | 769 | break; |
ae760f4b YW |
770 | case 'w': |
771 | if (optarg) { | |
772 | r = parse_sec(optarg, &arg_wait_for_initialization_timeout); | |
773 | if (r < 0) | |
774 | return log_error_errno(r, "Failed to parse timeout value: %m"); | |
775 | } else | |
776 | arg_wait_for_initialization_timeout = USEC_INFINITY; | |
777 | break; | |
912541b0 | 778 | case 'V': |
51b006e1 | 779 | return print_version(); |
912541b0 | 780 | case 'h': |
ee4a776d YW |
781 | return help(); |
782 | case '?': | |
783 | return -EINVAL; | |
912541b0 | 784 | default: |
04499a70 | 785 | assert_not_reached(); |
912541b0 | 786 | } |
912541b0 | 787 | |
3c79311a ZJS |
788 | if (action == ACTION_DEVICE_ID_FILE) { |
789 | if (argv[optind]) | |
668e7c0c | 790 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
3c79311a ZJS |
791 | "Positional arguments are not allowed with -d/--device-id-of-file."); |
792 | assert(name); | |
793 | return stat_device(name, arg_export, arg_export_prefix); | |
668e7c0c | 794 | } |
13aca847 | 795 | |
3c79311a ZJS |
796 | r = strv_extend_strv(&devices, argv + optind, false); |
797 | if (r < 0) | |
798 | return log_error_errno(r, "Failed to build argument list: %m"); | |
19a29798 | 799 | |
9117d94b | 800 | if (action != ACTION_TREE && strv_isempty(devices)) |
3c79311a ZJS |
801 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
802 | "A device name or path is required"); | |
9117d94b | 803 | if (IN_SET(action, ACTION_ATTRIBUTE_WALK, ACTION_TREE) && strv_length(devices) > 1) |
3c79311a | 804 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), |
9117d94b | 805 | "Only one device may be specified with -a/--attribute-walk and -t/--tree"); |
668e7c0c | 806 | |
6c1482b2 FS |
807 | if (arg_export && arg_value) |
808 | return log_error_errno(SYNTHETIC_ERRNO(EINVAL), | |
809 | "-x/--export or -P/--export-prefix cannot be used with --value"); | |
810 | ||
9117d94b LP |
811 | if (strv_isempty(devices)) { |
812 | assert(action == ACTION_TREE); | |
813 | pager_open(0); | |
814 | return print_tree(NULL); | |
815 | } | |
816 | ||
7ba77d8f | 817 | ret = 0; |
3c79311a ZJS |
818 | STRV_FOREACH(p, devices) { |
819 | _cleanup_(sd_device_unrefp) sd_device *device = NULL; | |
820 | ||
821 | r = find_device(*p, NULL, &device); | |
7ba77d8f LP |
822 | if (r < 0) { |
823 | if (r == -EINVAL) | |
824 | log_error_errno(r, "Bad argument \"%s\", expected an absolute path in /dev/ or /sys/ or a unit name: %m", *p); | |
825 | else | |
826 | log_error_errno(r, "Unknown device \"%s\": %m", *p); | |
827 | ||
828 | if (ret == 0) | |
829 | ret = r; | |
830 | continue; | |
831 | } | |
3c79311a | 832 | |
ae760f4b | 833 | if (arg_wait_for_initialization_timeout > 0) { |
7a555216 YW |
834 | sd_device *d; |
835 | ||
9e3d9067 LP |
836 | r = device_wait_for_initialization( |
837 | device, | |
838 | NULL, | |
839 | usec_add(now(CLOCK_MONOTONIC), arg_wait_for_initialization_timeout), | |
840 | &d); | |
ae760f4b YW |
841 | if (r < 0) |
842 | return r; | |
7a555216 YW |
843 | |
844 | sd_device_unref(device); | |
845 | device = d; | |
ae760f4b YW |
846 | } |
847 | ||
3c79311a ZJS |
848 | if (action == ACTION_QUERY) |
849 | r = query_device(query, device); | |
850 | else if (action == ACTION_ATTRIBUTE_WALK) | |
851 | r = print_device_chain(device); | |
9117d94b LP |
852 | else if (action == ACTION_TREE) |
853 | r = print_tree(device); | |
3c79311a | 854 | else |
04499a70 | 855 | assert_not_reached(); |
3c79311a ZJS |
856 | if (r < 0) |
857 | return r; | |
912541b0 | 858 | } |
87171e46 | 859 | |
7ba77d8f | 860 | return ret; |
87171e46 | 861 | } |