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53e1b683 | 1 | /* SPDX-License-Identifier: LGPL-2.1+ */ |
450442cf LP |
2 | |
3 | #include <getopt.h> | |
4 | ||
5 | #include "libudev.h" | |
6 | #include "sd-bus.h" | |
7 | ||
8 | #include "bus-error.h" | |
9 | #include "bus-unit-util.h" | |
10 | #include "bus-util.h" | |
6f6165bf | 11 | #include "dirent-util.h" |
450442cf | 12 | #include "escape.h" |
9017f5d8 | 13 | #include "fd-util.h" |
6f6165bf | 14 | #include "fileio.h" |
f4938c2e | 15 | #include "fs-util.h" |
450442cf | 16 | #include "fstab-util.h" |
e2be442e | 17 | #include "mount-util.h" |
450442cf LP |
18 | #include "pager.h" |
19 | #include "parse-util.h" | |
20 | #include "path-util.h" | |
21 | #include "spawn-polkit-agent.h" | |
6f6165bf | 22 | #include "stat-util.h" |
450442cf LP |
23 | #include "strv.h" |
24 | #include "udev-util.h" | |
89ada3ba | 25 | #include "unit-def.h" |
450442cf | 26 | #include "unit-name.h" |
e09fc884 | 27 | #include "user-util.h" |
450442cf LP |
28 | #include "terminal-util.h" |
29 | ||
30 | enum { | |
31 | ACTION_DEFAULT, | |
32 | ACTION_MOUNT, | |
33 | ACTION_AUTOMOUNT, | |
c37fb55b | 34 | ACTION_UMOUNT, |
450442cf LP |
35 | ACTION_LIST, |
36 | } arg_action = ACTION_DEFAULT; | |
37 | ||
38 | static bool arg_no_block = false; | |
39 | static bool arg_no_pager = false; | |
40 | static bool arg_ask_password = true; | |
41 | static bool arg_quiet = false; | |
42 | static BusTransport arg_transport = BUS_TRANSPORT_LOCAL; | |
43 | static bool arg_user = false; | |
44 | static const char *arg_host = NULL; | |
45 | static bool arg_discover = false; | |
46 | static char *arg_mount_what = NULL; | |
47 | static char *arg_mount_where = NULL; | |
48 | static char *arg_mount_type = NULL; | |
49 | static char *arg_mount_options = NULL; | |
50 | static char *arg_description = NULL; | |
51 | static char **arg_property = NULL; | |
52 | static usec_t arg_timeout_idle = USEC_INFINITY; | |
53 | static bool arg_timeout_idle_set = false; | |
54 | static char **arg_automount_property = NULL; | |
55 | static int arg_bind_device = -1; | |
e09fc884 ZJS |
56 | static uid_t arg_uid = UID_INVALID; |
57 | static gid_t arg_gid = GID_INVALID; | |
450442cf | 58 | static bool arg_fsck = true; |
dc336483 | 59 | static bool arg_aggressive_gc = false; |
450442cf | 60 | |
450442cf | 61 | static void help(void) { |
9017f5d8 YW |
62 | printf("systemd-mount [OPTIONS...] WHAT [WHERE]\n" |
63 | "systemd-mount [OPTIONS...] --list\n" | |
64 | "%s [OPTIONS...] %sWHAT|WHERE...\n\n" | |
450442cf LP |
65 | "Establish a mount or auto-mount point transiently.\n\n" |
66 | " -h --help Show this help\n" | |
67 | " --version Show package version\n" | |
68 | " --no-block Do not wait until operation finished\n" | |
69 | " --no-pager Do not pipe output into a pager\n" | |
70 | " --no-ask-password Do not prompt for password\n" | |
71 | " -q --quiet Suppress information messages during runtime\n" | |
72 | " --user Run as user unit\n" | |
73 | " -H --host=[USER@]HOST Operate on remote host\n" | |
74 | " -M --machine=CONTAINER Operate on local container\n" | |
75 | " --discover Discover mount device metadata\n" | |
76 | " -t --type=TYPE File system type\n" | |
77 | " -o --options=OPTIONS Mount options\n" | |
e09fc884 | 78 | " --owner=USER Add uid= and gid= options for USER\n" |
450442cf LP |
79 | " --fsck=no Don't run file system check before mount\n" |
80 | " --description=TEXT Description for unit\n" | |
81 | " -p --property=NAME=VALUE Set mount unit property\n" | |
82 | " -A --automount=BOOL Create an auto-mount point\n" | |
83 | " --timeout-idle-sec=SEC Specify automount idle timeout\n" | |
84 | " --automount-property=NAME=VALUE\n" | |
85 | " Set automount unit property\n" | |
86 | " --bind-device Bind automount unit to device\n" | |
87 | " --list List mountable block devices\n" | |
dc336483 YW |
88 | " -u --umount Unmount mount points\n" |
89 | " -G --collect Unload unit after it stopped, even when failed\n", | |
9017f5d8 YW |
90 | program_invocation_short_name, |
91 | streq(program_invocation_short_name, "systemd-umount") ? "" : "--umount "); | |
450442cf LP |
92 | } |
93 | ||
94 | static int parse_argv(int argc, char *argv[]) { | |
95 | ||
96 | enum { | |
97 | ARG_VERSION = 0x100, | |
98 | ARG_NO_BLOCK, | |
99 | ARG_NO_PAGER, | |
100 | ARG_NO_ASK_PASSWORD, | |
101 | ARG_USER, | |
102 | ARG_SYSTEM, | |
103 | ARG_DISCOVER, | |
104 | ARG_MOUNT_TYPE, | |
105 | ARG_MOUNT_OPTIONS, | |
e09fc884 | 106 | ARG_OWNER, |
450442cf LP |
107 | ARG_FSCK, |
108 | ARG_DESCRIPTION, | |
109 | ARG_TIMEOUT_IDLE, | |
110 | ARG_AUTOMOUNT, | |
111 | ARG_AUTOMOUNT_PROPERTY, | |
112 | ARG_BIND_DEVICE, | |
113 | ARG_LIST, | |
114 | }; | |
115 | ||
116 | static const struct option options[] = { | |
117 | { "help", no_argument, NULL, 'h' }, | |
118 | { "version", no_argument, NULL, ARG_VERSION }, | |
119 | { "no-block", no_argument, NULL, ARG_NO_BLOCK }, | |
120 | { "no-pager", no_argument, NULL, ARG_NO_PAGER }, | |
121 | { "no-ask-password", no_argument, NULL, ARG_NO_ASK_PASSWORD }, | |
122 | { "quiet", no_argument, NULL, 'q' }, | |
123 | { "user", no_argument, NULL, ARG_USER }, | |
124 | { "system", no_argument, NULL, ARG_SYSTEM }, | |
125 | { "host", required_argument, NULL, 'H' }, | |
126 | { "machine", required_argument, NULL, 'M' }, | |
127 | { "discover", no_argument, NULL, ARG_DISCOVER }, | |
128 | { "type", required_argument, NULL, 't' }, | |
129 | { "options", required_argument, NULL, 'o' }, | |
e09fc884 | 130 | { "owner", required_argument, NULL, ARG_OWNER }, |
0f923832 | 131 | { "fsck", required_argument, NULL, ARG_FSCK }, |
450442cf LP |
132 | { "description", required_argument, NULL, ARG_DESCRIPTION }, |
133 | { "property", required_argument, NULL, 'p' }, | |
134 | { "automount", required_argument, NULL, ARG_AUTOMOUNT }, | |
135 | { "timeout-idle-sec", required_argument, NULL, ARG_TIMEOUT_IDLE }, | |
136 | { "automount-property", required_argument, NULL, ARG_AUTOMOUNT_PROPERTY }, | |
137 | { "bind-device", no_argument, NULL, ARG_BIND_DEVICE }, | |
138 | { "list", no_argument, NULL, ARG_LIST }, | |
c37fb55b LR |
139 | { "umount", no_argument, NULL, 'u' }, |
140 | { "unmount", no_argument, NULL, 'u' }, | |
dc336483 | 141 | { "collect", no_argument, NULL, 'G' }, |
450442cf LP |
142 | {}, |
143 | }; | |
144 | ||
145 | int r, c; | |
146 | ||
147 | assert(argc >= 0); | |
148 | assert(argv); | |
149 | ||
c37fb55b LR |
150 | if (strstr(program_invocation_short_name, "systemd-umount")) |
151 | arg_action = ACTION_UMOUNT; | |
152 | ||
dc336483 | 153 | while ((c = getopt_long(argc, argv, "hqH:M:t:o:p:AuG", options, NULL)) >= 0) |
450442cf LP |
154 | |
155 | switch (c) { | |
156 | ||
157 | case 'h': | |
158 | help(); | |
159 | return 0; | |
160 | ||
161 | case ARG_VERSION: | |
162 | return version(); | |
163 | ||
164 | case ARG_NO_BLOCK: | |
165 | arg_no_block = true; | |
166 | break; | |
167 | ||
168 | case ARG_NO_PAGER: | |
169 | arg_no_pager = true; | |
170 | break; | |
171 | ||
172 | case ARG_NO_ASK_PASSWORD: | |
173 | arg_ask_password = false; | |
174 | break; | |
175 | ||
176 | case 'q': | |
177 | arg_quiet = true; | |
178 | break; | |
179 | ||
180 | case ARG_USER: | |
181 | arg_user = true; | |
182 | break; | |
183 | ||
184 | case ARG_SYSTEM: | |
185 | arg_user = false; | |
186 | break; | |
187 | ||
188 | case 'H': | |
189 | arg_transport = BUS_TRANSPORT_REMOTE; | |
190 | arg_host = optarg; | |
191 | break; | |
192 | ||
193 | case 'M': | |
194 | arg_transport = BUS_TRANSPORT_MACHINE; | |
195 | arg_host = optarg; | |
196 | break; | |
197 | ||
198 | case ARG_DISCOVER: | |
199 | arg_discover = true; | |
200 | break; | |
201 | ||
202 | case 't': | |
203 | if (free_and_strdup(&arg_mount_type, optarg) < 0) | |
204 | return log_oom(); | |
205 | break; | |
206 | ||
207 | case 'o': | |
208 | if (free_and_strdup(&arg_mount_options, optarg) < 0) | |
209 | return log_oom(); | |
210 | break; | |
211 | ||
e09fc884 ZJS |
212 | case ARG_OWNER: { |
213 | const char *user = optarg; | |
214 | ||
215 | r = get_user_creds(&user, &arg_uid, &arg_gid, NULL, NULL); | |
216 | if (r < 0) | |
217 | return log_error_errno(r, | |
218 | r == -EBADMSG ? "UID or GID of user %s are invalid." | |
219 | : "Cannot use \"%s\" as owner: %m", | |
220 | optarg); | |
221 | break; | |
222 | } | |
223 | ||
450442cf LP |
224 | case ARG_FSCK: |
225 | r = parse_boolean(optarg); | |
226 | if (r < 0) | |
227 | return log_error_errno(r, "Failed to parse --fsck= argument: %s", optarg); | |
228 | ||
229 | arg_fsck = r; | |
230 | break; | |
231 | ||
232 | case ARG_DESCRIPTION: | |
233 | if (free_and_strdup(&arg_description, optarg) < 0) | |
234 | return log_oom(); | |
235 | break; | |
236 | ||
237 | case 'p': | |
238 | if (strv_extend(&arg_property, optarg) < 0) | |
239 | return log_oom(); | |
240 | ||
241 | break; | |
242 | ||
243 | case 'A': | |
244 | arg_action = ACTION_AUTOMOUNT; | |
245 | break; | |
246 | ||
247 | case ARG_AUTOMOUNT: | |
248 | r = parse_boolean(optarg); | |
249 | if (r < 0) | |
250 | return log_error_errno(r, "--automount= expects a valid boolean parameter: %s", optarg); | |
251 | ||
252 | arg_action = r ? ACTION_AUTOMOUNT : ACTION_MOUNT; | |
253 | break; | |
254 | ||
255 | case ARG_TIMEOUT_IDLE: | |
256 | r = parse_sec(optarg, &arg_timeout_idle); | |
257 | if (r < 0) | |
258 | return log_error_errno(r, "Failed to parse timeout: %s", optarg); | |
259 | ||
260 | break; | |
261 | ||
262 | case ARG_AUTOMOUNT_PROPERTY: | |
263 | if (strv_extend(&arg_automount_property, optarg) < 0) | |
264 | return log_oom(); | |
265 | ||
266 | break; | |
267 | ||
268 | case ARG_BIND_DEVICE: | |
269 | arg_bind_device = true; | |
270 | break; | |
271 | ||
272 | case ARG_LIST: | |
273 | arg_action = ACTION_LIST; | |
274 | break; | |
275 | ||
c37fb55b LR |
276 | case 'u': |
277 | arg_action = ACTION_UMOUNT; | |
278 | break; | |
279 | ||
dc336483 YW |
280 | case 'G': |
281 | arg_aggressive_gc = true; | |
282 | break; | |
283 | ||
450442cf LP |
284 | case '?': |
285 | return -EINVAL; | |
286 | ||
287 | default: | |
288 | assert_not_reached("Unhandled option"); | |
289 | } | |
290 | ||
291 | if (arg_user && arg_transport != BUS_TRANSPORT_LOCAL) { | |
292 | log_error("Execution in user context is not supported on non-local systems."); | |
293 | return -EINVAL; | |
294 | } | |
295 | ||
296 | if (arg_action == ACTION_LIST) { | |
297 | if (optind < argc) { | |
298 | log_error("Too many arguments."); | |
299 | return -EINVAL; | |
300 | } | |
301 | ||
302 | if (arg_transport != BUS_TRANSPORT_LOCAL) { | |
303 | log_error("Listing devices only supported locally."); | |
304 | return -EOPNOTSUPP; | |
305 | } | |
9017f5d8 YW |
306 | } else if (arg_action == ACTION_UMOUNT) { |
307 | if (optind >= argc) { | |
308 | log_error("At least one argument required."); | |
309 | return -EINVAL; | |
310 | } | |
311 | ||
312 | if (arg_transport != BUS_TRANSPORT_LOCAL) { | |
3747daa2 YW |
313 | int i; |
314 | ||
315 | for (i = optind; i < argc; i++) | |
316 | if (!path_is_absolute(argv[i]) ) { | |
317 | log_error("Only absolute path is supported: %s", argv[i]); | |
318 | return -EINVAL; | |
319 | } | |
9017f5d8 | 320 | } |
450442cf LP |
321 | } else { |
322 | if (optind >= argc) { | |
323 | log_error("At least one argument required."); | |
324 | return -EINVAL; | |
325 | } | |
326 | ||
327 | if (argc > optind+2) { | |
328 | log_error("At most two arguments required."); | |
329 | return -EINVAL; | |
330 | } | |
331 | ||
e2be442e YW |
332 | if (arg_mount_type && (fstype_is_api_vfs(arg_mount_type) || fstype_is_network(arg_mount_type))) { |
333 | arg_mount_what = strdup(argv[optind]); | |
334 | if (!arg_mount_what) | |
335 | return log_oom(); | |
336 | ||
337 | } else if (arg_transport == BUS_TRANSPORT_LOCAL) { | |
5bc9f949 | 338 | _cleanup_free_ char *u = NULL; |
450442cf | 339 | |
afde5b16 YW |
340 | u = fstab_node_to_udev_node(argv[optind]); |
341 | if (!u) | |
342 | return log_oom(); | |
343 | ||
5bc9f949 | 344 | r = chase_symlinks(u, NULL, 0, &arg_mount_what); |
450442cf | 345 | if (r < 0) |
de345d34 | 346 | return log_error_errno(r, "Failed to make path %s absolute: %m", u); |
afde5b16 | 347 | } else { |
4185da7c | 348 | arg_mount_what = strdup(argv[optind]); |
afde5b16 YW |
349 | if (!arg_mount_what) |
350 | return log_oom(); | |
351 | ||
858d36c1 | 352 | path_simplify(arg_mount_what, false); |
afde5b16 YW |
353 | |
354 | if (!path_is_absolute(arg_mount_what)) { | |
355 | log_error("Only absolute path is supported: %s", arg_mount_what); | |
356 | return -EINVAL; | |
357 | } | |
358 | } | |
359 | ||
360 | if (argc > optind+1) { | |
361 | if (arg_transport == BUS_TRANSPORT_LOCAL) { | |
f4938c2e | 362 | r = chase_symlinks(argv[optind+1], NULL, CHASE_NONEXISTENT, &arg_mount_where); |
afde5b16 | 363 | if (r < 0) |
de345d34 | 364 | return log_error_errno(r, "Failed to make path %s absolute: %m", argv[optind+1]); |
afde5b16 YW |
365 | } else { |
366 | arg_mount_where = strdup(argv[optind+1]); | |
367 | if (!arg_mount_where) | |
368 | return log_oom(); | |
369 | ||
858d36c1 | 370 | path_simplify(arg_mount_where, false); |
afde5b16 YW |
371 | |
372 | if (!path_is_absolute(arg_mount_where)) { | |
373 | log_error("Only absolute path is supported: %s", arg_mount_where); | |
374 | return -EINVAL; | |
375 | } | |
376 | } | |
450442cf LP |
377 | } else |
378 | arg_discover = true; | |
379 | ||
380 | if (arg_discover && arg_transport != BUS_TRANSPORT_LOCAL) { | |
381 | log_error("Automatic mount location discovery is only supported locally."); | |
382 | return -EOPNOTSUPP; | |
383 | } | |
384 | } | |
385 | ||
386 | return 1; | |
387 | } | |
388 | ||
89ada3ba | 389 | static int transient_unit_set_properties(sd_bus_message *m, UnitType t, char **properties) { |
450442cf LP |
390 | int r; |
391 | ||
05b4d3b5 AK |
392 | if (!isempty(arg_description)) { |
393 | r = sd_bus_message_append(m, "(sv)", "Description", "s", arg_description); | |
394 | if (r < 0) | |
395 | return r; | |
396 | } | |
450442cf LP |
397 | |
398 | if (arg_bind_device && is_device_path(arg_mount_what)) { | |
399 | _cleanup_free_ char *device_unit = NULL; | |
400 | ||
401 | r = unit_name_from_path(arg_mount_what, ".device", &device_unit); | |
402 | if (r < 0) | |
403 | return r; | |
404 | ||
405 | r = sd_bus_message_append(m, "(sv)(sv)", | |
406 | "After", "as", 1, device_unit, | |
407 | "BindsTo", "as", 1, device_unit); | |
408 | if (r < 0) | |
409 | return r; | |
410 | } | |
411 | ||
dc336483 YW |
412 | if (arg_aggressive_gc) { |
413 | r = sd_bus_message_append(m, "(sv)", "CollectMode", "s", "inactive-or-failed"); | |
414 | if (r < 0) | |
415 | return r; | |
416 | } | |
417 | ||
89ada3ba | 418 | r = bus_append_unit_property_assignment_many(m, t, properties); |
450442cf LP |
419 | if (r < 0) |
420 | return r; | |
421 | ||
422 | return 0; | |
423 | } | |
424 | ||
425 | static int transient_mount_set_properties(sd_bus_message *m) { | |
e09fc884 | 426 | _cleanup_free_ char *options = NULL; |
450442cf LP |
427 | int r; |
428 | ||
429 | assert(m); | |
430 | ||
89ada3ba | 431 | r = transient_unit_set_properties(m, UNIT_MOUNT, arg_property); |
450442cf LP |
432 | if (r < 0) |
433 | return r; | |
434 | ||
435 | if (arg_mount_what) { | |
436 | r = sd_bus_message_append(m, "(sv)", "What", "s", arg_mount_what); | |
437 | if (r < 0) | |
438 | return r; | |
439 | } | |
440 | ||
441 | if (arg_mount_type) { | |
442 | r = sd_bus_message_append(m, "(sv)", "Type", "s", arg_mount_type); | |
443 | if (r < 0) | |
444 | return r; | |
445 | } | |
446 | ||
e09fc884 ZJS |
447 | /* Prepend uid=…,gid=… if arg_uid is set */ |
448 | if (arg_uid != UID_INVALID) { | |
449 | r = asprintf(&options, | |
450 | "uid=" UID_FMT ",gid=" GID_FMT "%s%s", | |
451 | arg_uid, arg_gid, | |
452 | arg_mount_options ? "," : "", arg_mount_options); | |
450442cf | 453 | if (r < 0) |
e09fc884 | 454 | return -ENOMEM; |
450442cf LP |
455 | } |
456 | ||
e09fc884 ZJS |
457 | if (options || arg_mount_options) { |
458 | log_debug("Using mount options: %s", options ?: arg_mount_options); | |
459 | ||
460 | r = sd_bus_message_append(m, "(sv)", "Options", "s", options ?: arg_mount_options); | |
461 | if (r < 0) | |
462 | return r; | |
463 | } else | |
464 | log_debug("Not using any mount options"); | |
465 | ||
450442cf LP |
466 | if (arg_fsck) { |
467 | _cleanup_free_ char *fsck = NULL; | |
468 | ||
469 | r = unit_name_from_path_instance("systemd-fsck", arg_mount_what, ".service", &fsck); | |
470 | if (r < 0) | |
471 | return r; | |
472 | ||
473 | r = sd_bus_message_append(m, | |
474 | "(sv)(sv)", | |
475 | "Requires", "as", 1, fsck, | |
476 | "After", "as", 1, fsck); | |
477 | if (r < 0) | |
478 | return r; | |
479 | } | |
480 | ||
481 | return 0; | |
482 | } | |
483 | ||
484 | static int transient_automount_set_properties(sd_bus_message *m) { | |
485 | int r; | |
486 | ||
487 | assert(m); | |
488 | ||
89ada3ba | 489 | r = transient_unit_set_properties(m, UNIT_AUTOMOUNT, arg_automount_property); |
450442cf LP |
490 | if (r < 0) |
491 | return r; | |
492 | ||
493 | if (arg_timeout_idle != USEC_INFINITY) { | |
494 | r = sd_bus_message_append(m, "(sv)", "TimeoutIdleUSec", "t", arg_timeout_idle); | |
495 | if (r < 0) | |
496 | return r; | |
497 | } | |
498 | ||
499 | return 0; | |
500 | } | |
501 | ||
502 | static int start_transient_mount( | |
503 | sd_bus *bus, | |
504 | char **argv) { | |
505 | ||
506 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL; | |
507 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
508 | _cleanup_(bus_wait_for_jobs_freep) BusWaitForJobs *w = NULL; | |
509 | _cleanup_free_ char *mount_unit = NULL; | |
510 | int r; | |
511 | ||
512 | if (!arg_no_block) { | |
513 | r = bus_wait_for_jobs_new(bus, &w); | |
514 | if (r < 0) | |
515 | return log_error_errno(r, "Could not watch jobs: %m"); | |
516 | } | |
517 | ||
518 | r = unit_name_from_path(arg_mount_where, ".mount", &mount_unit); | |
519 | if (r < 0) | |
520 | return log_error_errno(r, "Failed to make mount unit name: %m"); | |
521 | ||
522 | r = sd_bus_message_new_method_call( | |
523 | bus, | |
524 | &m, | |
525 | "org.freedesktop.systemd1", | |
526 | "/org/freedesktop/systemd1", | |
527 | "org.freedesktop.systemd1.Manager", | |
528 | "StartTransientUnit"); | |
529 | if (r < 0) | |
530 | return bus_log_create_error(r); | |
531 | ||
532 | r = sd_bus_message_set_allow_interactive_authorization(m, arg_ask_password); | |
533 | if (r < 0) | |
534 | return bus_log_create_error(r); | |
535 | ||
536 | /* Name and mode */ | |
537 | r = sd_bus_message_append(m, "ss", mount_unit, "fail"); | |
538 | if (r < 0) | |
539 | return bus_log_create_error(r); | |
540 | ||
541 | /* Properties */ | |
542 | r = sd_bus_message_open_container(m, 'a', "(sv)"); | |
543 | if (r < 0) | |
544 | return bus_log_create_error(r); | |
545 | ||
546 | r = transient_mount_set_properties(m); | |
547 | if (r < 0) | |
548 | return bus_log_create_error(r); | |
549 | ||
550 | r = sd_bus_message_close_container(m); | |
551 | if (r < 0) | |
552 | return bus_log_create_error(r); | |
553 | ||
554 | /* Auxiliary units */ | |
555 | r = sd_bus_message_append(m, "a(sa(sv))", 0); | |
556 | if (r < 0) | |
557 | return bus_log_create_error(r); | |
558 | ||
8a4b13c5 | 559 | polkit_agent_open_if_enabled(arg_transport, arg_ask_password); |
450442cf LP |
560 | |
561 | r = sd_bus_call(bus, m, 0, &error, &reply); | |
562 | if (r < 0) | |
563 | return log_error_errno(r, "Failed to start transient mount unit: %s", bus_error_message(&error, r)); | |
564 | ||
565 | if (w) { | |
566 | const char *object; | |
567 | ||
568 | r = sd_bus_message_read(reply, "o", &object); | |
569 | if (r < 0) | |
570 | return bus_log_parse_error(r); | |
571 | ||
572 | r = bus_wait_for_jobs_one(w, object, arg_quiet); | |
573 | if (r < 0) | |
574 | return r; | |
575 | } | |
576 | ||
577 | if (!arg_quiet) | |
578 | log_info("Started unit %s%s%s for mount point: %s%s%s", | |
579 | ansi_highlight(), mount_unit, ansi_normal(), | |
580 | ansi_highlight(), arg_mount_where, ansi_normal()); | |
581 | ||
582 | return 0; | |
583 | } | |
584 | ||
585 | static int start_transient_automount( | |
586 | sd_bus *bus, | |
587 | char **argv) { | |
588 | ||
589 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL; | |
590 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
591 | _cleanup_(bus_wait_for_jobs_freep) BusWaitForJobs *w = NULL; | |
592 | _cleanup_free_ char *automount_unit = NULL, *mount_unit = NULL; | |
593 | int r; | |
594 | ||
595 | if (!arg_no_block) { | |
596 | r = bus_wait_for_jobs_new(bus, &w); | |
597 | if (r < 0) | |
598 | return log_error_errno(r, "Could not watch jobs: %m"); | |
599 | } | |
600 | ||
601 | r = unit_name_from_path(arg_mount_where, ".automount", &automount_unit); | |
602 | if (r < 0) | |
603 | return log_error_errno(r, "Failed to make automount unit name: %m"); | |
604 | ||
605 | r = unit_name_from_path(arg_mount_where, ".mount", &mount_unit); | |
606 | if (r < 0) | |
607 | return log_error_errno(r, "Failed to make mount unit name: %m"); | |
608 | ||
609 | r = sd_bus_message_new_method_call( | |
610 | bus, | |
611 | &m, | |
612 | "org.freedesktop.systemd1", | |
613 | "/org/freedesktop/systemd1", | |
614 | "org.freedesktop.systemd1.Manager", | |
615 | "StartTransientUnit"); | |
616 | if (r < 0) | |
617 | return bus_log_create_error(r); | |
618 | ||
619 | r = sd_bus_message_set_allow_interactive_authorization(m, arg_ask_password); | |
620 | if (r < 0) | |
621 | return bus_log_create_error(r); | |
622 | ||
623 | /* Name and mode */ | |
624 | r = sd_bus_message_append(m, "ss", automount_unit, "fail"); | |
625 | if (r < 0) | |
626 | return bus_log_create_error(r); | |
627 | ||
628 | /* Properties */ | |
629 | r = sd_bus_message_open_container(m, 'a', "(sv)"); | |
630 | if (r < 0) | |
631 | return bus_log_create_error(r); | |
632 | ||
633 | r = transient_automount_set_properties(m); | |
634 | if (r < 0) | |
635 | return bus_log_create_error(r); | |
636 | ||
637 | r = sd_bus_message_close_container(m); | |
638 | if (r < 0) | |
639 | return bus_log_create_error(r); | |
640 | ||
641 | /* Auxiliary units */ | |
642 | r = sd_bus_message_open_container(m, 'a', "(sa(sv))"); | |
643 | if (r < 0) | |
644 | return bus_log_create_error(r); | |
645 | ||
646 | r = sd_bus_message_open_container(m, 'r', "sa(sv)"); | |
647 | if (r < 0) | |
648 | return bus_log_create_error(r); | |
649 | ||
650 | r = sd_bus_message_append(m, "s", mount_unit); | |
651 | if (r < 0) | |
652 | return bus_log_create_error(r); | |
653 | ||
654 | r = sd_bus_message_open_container(m, 'a', "(sv)"); | |
655 | if (r < 0) | |
656 | return bus_log_create_error(r); | |
657 | ||
658 | r = transient_mount_set_properties(m); | |
659 | if (r < 0) | |
660 | return bus_log_create_error(r); | |
661 | ||
662 | r = sd_bus_message_close_container(m); | |
663 | if (r < 0) | |
664 | return bus_log_create_error(r); | |
665 | ||
666 | r = sd_bus_message_close_container(m); | |
667 | if (r < 0) | |
668 | return bus_log_create_error(r); | |
669 | ||
670 | r = sd_bus_message_close_container(m); | |
671 | if (r < 0) | |
672 | return bus_log_create_error(r); | |
673 | ||
8a4b13c5 | 674 | polkit_agent_open_if_enabled(arg_transport, arg_ask_password); |
450442cf LP |
675 | |
676 | r = sd_bus_call(bus, m, 0, &error, &reply); | |
677 | if (r < 0) | |
678 | return log_error_errno(r, "Failed to start transient automount unit: %s", bus_error_message(&error, r)); | |
679 | ||
680 | if (w) { | |
681 | const char *object; | |
682 | ||
683 | r = sd_bus_message_read(reply, "o", &object); | |
684 | if (r < 0) | |
685 | return bus_log_parse_error(r); | |
686 | ||
687 | r = bus_wait_for_jobs_one(w, object, arg_quiet); | |
688 | if (r < 0) | |
689 | return r; | |
690 | } | |
691 | ||
692 | if (!arg_quiet) | |
693 | log_info("Started unit %s%s%s for mount point: %s%s%s", | |
694 | ansi_highlight(), automount_unit, ansi_normal(), | |
695 | ansi_highlight(), arg_mount_where, ansi_normal()); | |
696 | ||
697 | return 0; | |
698 | } | |
699 | ||
f0aac575 YW |
700 | static int find_mount_points(const char *what, char ***list) { |
701 | _cleanup_fclose_ FILE *proc_self_mountinfo = NULL; | |
702 | _cleanup_strv_free_ char **l = NULL; | |
703 | size_t bufsize = 0, n = 0; | |
704 | ||
705 | assert(what); | |
706 | assert(list); | |
707 | ||
708 | /* Returns all mount points obtained from /proc/self/mountinfo in *list, | |
709 | * and the number of mount points as return value. */ | |
710 | ||
711 | proc_self_mountinfo = fopen("/proc/self/mountinfo", "re"); | |
712 | if (!proc_self_mountinfo) | |
713 | return log_error_errno(errno, "Can't open /proc/self/mountinfo: %m"); | |
714 | ||
715 | for (;;) { | |
716 | _cleanup_free_ char *path = NULL, *where = NULL, *dev = NULL; | |
717 | int r; | |
718 | ||
719 | r = fscanf(proc_self_mountinfo, | |
720 | "%*s " /* (1) mount id */ | |
721 | "%*s " /* (2) parent id */ | |
722 | "%*s " /* (3) major:minor */ | |
723 | "%*s " /* (4) root */ | |
724 | "%ms " /* (5) mount point */ | |
725 | "%*s" /* (6) mount options */ | |
726 | "%*[^-]" /* (7) optional fields */ | |
727 | "- " /* (8) separator */ | |
728 | "%*s " /* (9) file system type */ | |
729 | "%ms" /* (10) mount source */ | |
730 | "%*s" /* (11) mount options 2 */ | |
731 | "%*[^\n]", /* some rubbish at the end */ | |
732 | &path, &dev); | |
733 | if (r != 2) { | |
734 | if (r == EOF) | |
735 | break; | |
736 | ||
737 | continue; | |
738 | } | |
739 | ||
740 | if (!streq(what, dev)) | |
741 | continue; | |
742 | ||
743 | r = cunescape(path, UNESCAPE_RELAX, &where); | |
744 | if (r < 0) | |
745 | continue; | |
746 | ||
747 | /* one extra slot is needed for the terminating NULL */ | |
748 | if (!GREEDY_REALLOC(l, bufsize, n + 2)) | |
749 | return log_oom(); | |
750 | ||
ae2a15bc | 751 | l[n++] = TAKE_PTR(where); |
f0aac575 YW |
752 | } |
753 | ||
290843c3 LP |
754 | if (!GREEDY_REALLOC(l, bufsize, n + 1)) |
755 | return log_oom(); | |
756 | ||
f0aac575 | 757 | l[n] = NULL; |
ae2a15bc | 758 | *list = TAKE_PTR(l); |
f0aac575 YW |
759 | |
760 | return n; | |
761 | } | |
762 | ||
763 | static int find_loop_device(const char *backing_file, char **loop_dev) { | |
764 | _cleanup_closedir_ DIR *d = NULL; | |
765 | struct dirent *de; | |
766 | _cleanup_free_ char *l = NULL; | |
767 | ||
768 | assert(backing_file); | |
769 | assert(loop_dev); | |
770 | ||
771 | d = opendir("/sys/devices/virtual/block"); | |
5c6803f5 LP |
772 | if (!d) |
773 | return -errno; | |
f0aac575 YW |
774 | |
775 | FOREACH_DIRENT(de, d, return -errno) { | |
776 | _cleanup_free_ char *sys = NULL, *fname = NULL; | |
777 | int r; | |
778 | ||
779 | dirent_ensure_type(d, de); | |
780 | ||
781 | if (de->d_type != DT_DIR) | |
782 | continue; | |
783 | ||
784 | if (!startswith(de->d_name, "loop")) | |
785 | continue; | |
786 | ||
787 | sys = strjoin("/sys/devices/virtual/block/", de->d_name, "/loop/backing_file"); | |
788 | if (!sys) | |
5c6803f5 | 789 | return -ENOMEM; |
f0aac575 YW |
790 | |
791 | r = read_one_line_file(sys, &fname); | |
a53dceb7 LP |
792 | if (r < 0) { |
793 | log_debug_errno(r, "Failed to read %s, ignoring: %m", sys); | |
f0aac575 | 794 | continue; |
a53dceb7 | 795 | } |
f0aac575 YW |
796 | |
797 | if (files_same(fname, backing_file, 0) <= 0) | |
798 | continue; | |
799 | ||
800 | l = strjoin("/dev/", de->d_name); | |
801 | if (!l) | |
5c6803f5 | 802 | return -ENOMEM; |
f0aac575 YW |
803 | |
804 | break; | |
805 | } | |
806 | ||
807 | if (!l) | |
aa46fa64 | 808 | return -ENXIO; |
f0aac575 | 809 | |
ae2a15bc | 810 | *loop_dev = TAKE_PTR(l); |
f0aac575 YW |
811 | |
812 | return 0; | |
813 | } | |
814 | ||
c37fb55b LR |
815 | static int stop_mount( |
816 | sd_bus *bus, | |
9017f5d8 | 817 | const char *where, |
6f6165bf | 818 | const char *suffix) { |
c37fb55b LR |
819 | |
820 | _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL; | |
821 | _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL; | |
822 | _cleanup_(bus_wait_for_jobs_freep) BusWaitForJobs *w = NULL; | |
823 | _cleanup_free_ char *mount_unit = NULL; | |
824 | int r; | |
825 | ||
826 | if (!arg_no_block) { | |
827 | r = bus_wait_for_jobs_new(bus, &w); | |
828 | if (r < 0) | |
829 | return log_error_errno(r, "Could not watch jobs: %m"); | |
830 | } | |
831 | ||
9017f5d8 | 832 | r = unit_name_from_path(where, suffix, &mount_unit); |
c37fb55b | 833 | if (r < 0) |
6442c210 | 834 | return log_error_errno(r, "Failed to make %s unit name from path %s: %m", suffix + 1, where); |
c37fb55b LR |
835 | |
836 | r = sd_bus_message_new_method_call( | |
837 | bus, | |
838 | &m, | |
839 | "org.freedesktop.systemd1", | |
840 | "/org/freedesktop/systemd1", | |
841 | "org.freedesktop.systemd1.Manager", | |
842 | "StopUnit"); | |
843 | if (r < 0) | |
844 | return bus_log_create_error(r); | |
845 | ||
846 | r = sd_bus_message_set_allow_interactive_authorization(m, arg_ask_password); | |
847 | if (r < 0) | |
848 | return bus_log_create_error(r); | |
849 | ||
850 | /* Name and mode */ | |
851 | r = sd_bus_message_append(m, "ss", mount_unit, "fail"); | |
852 | if (r < 0) | |
853 | return bus_log_create_error(r); | |
854 | ||
8a4b13c5 | 855 | polkit_agent_open_if_enabled(arg_transport, arg_ask_password); |
c37fb55b LR |
856 | |
857 | r = sd_bus_call(bus, m, 0, &error, &reply); | |
6442c210 YW |
858 | if (r < 0) { |
859 | if (streq(suffix, ".automount") && | |
860 | sd_bus_error_has_name(&error, "org.freedesktop.systemd1.NoSuchUnit")) | |
861 | return 0; | |
862 | return log_error_errno(r, "Failed to stop %s unit: %s", suffix + 1, bus_error_message(&error, r)); | |
863 | } | |
c37fb55b LR |
864 | |
865 | if (w) { | |
866 | const char *object; | |
867 | ||
868 | r = sd_bus_message_read(reply, "o", &object); | |
869 | if (r < 0) | |
870 | return bus_log_parse_error(r); | |
871 | ||
872 | r = bus_wait_for_jobs_one(w, object, arg_quiet); | |
873 | if (r < 0) | |
874 | return r; | |
875 | } | |
876 | ||
877 | if (!arg_quiet) | |
878 | log_info("Stopped unit %s%s%s for mount point: %s%s%s", | |
879 | ansi_highlight(), mount_unit, ansi_normal(), | |
9017f5d8 | 880 | ansi_highlight(), where, ansi_normal()); |
c37fb55b LR |
881 | |
882 | return 0; | |
883 | } | |
884 | ||
885 | static int stop_mounts( | |
886 | sd_bus *bus, | |
6f6165bf | 887 | const char *where) { |
c37fb55b LR |
888 | |
889 | int r; | |
890 | ||
9017f5d8 YW |
891 | if (path_equal(where, "/")) { |
892 | log_error("Refusing to operate on root directory: %s", where); | |
893 | return -EINVAL; | |
894 | } | |
895 | ||
99be45a4 LP |
896 | if (!path_is_normalized(where)) { |
897 | log_error("Path contains non-normalized components: %s", where); | |
9017f5d8 YW |
898 | return -EINVAL; |
899 | } | |
900 | ||
6f6165bf | 901 | r = stop_mount(bus, where, ".mount"); |
c37fb55b LR |
902 | if (r < 0) |
903 | return r; | |
904 | ||
6f6165bf | 905 | r = stop_mount(bus, where, ".automount"); |
c37fb55b LR |
906 | if (r < 0) |
907 | return r; | |
908 | ||
909 | return 0; | |
910 | } | |
911 | ||
9017f5d8 | 912 | static int umount_by_device(sd_bus *bus, const char *what) { |
8e766630 LP |
913 | _cleanup_(udev_device_unrefp) struct udev_device *d = NULL; |
914 | _cleanup_(udev_unrefp) struct udev *udev = NULL; | |
f0aac575 | 915 | _cleanup_strv_free_ char **list = NULL; |
9017f5d8 YW |
916 | struct stat st; |
917 | const char *v; | |
f0aac575 | 918 | char **l; |
6f6165bf | 919 | int r, r2 = 0; |
9017f5d8 YW |
920 | |
921 | assert(what); | |
922 | ||
923 | if (stat(what, &st) < 0) | |
924 | return log_error_errno(errno, "Can't stat %s: %m", what); | |
925 | ||
926 | if (!S_ISBLK(st.st_mode)) { | |
6f6165bf | 927 | log_error("Not a block device: %s", what); |
9017f5d8 YW |
928 | return -ENOTBLK; |
929 | } | |
930 | ||
931 | udev = udev_new(); | |
932 | if (!udev) | |
933 | return log_oom(); | |
934 | ||
935 | d = udev_device_new_from_devnum(udev, 'b', st.st_rdev); | |
936 | if (!d) | |
937 | return log_oom(); | |
938 | ||
939 | v = udev_device_get_property_value(d, "ID_FS_USAGE"); | |
940 | if (!streq_ptr(v, "filesystem")) { | |
941 | log_error("%s does not contain a known file system.", what); | |
942 | return -EINVAL; | |
943 | } | |
944 | ||
945 | v = udev_device_get_property_value(d, "SYSTEMD_MOUNT_WHERE"); | |
f0aac575 YW |
946 | if (!isempty(v)) |
947 | r2 = stop_mounts(bus, v); | |
9017f5d8 | 948 | |
f0aac575 YW |
949 | r = find_mount_points(what, &list); |
950 | if (r < 0) | |
951 | return r; | |
952 | ||
953 | for (l = list; *l; l++) { | |
954 | r = stop_mounts(bus, *l); | |
6f6165bf | 955 | if (r < 0) |
f0aac575 | 956 | r2 = r; |
9017f5d8 YW |
957 | } |
958 | ||
6f6165bf YW |
959 | return r2; |
960 | } | |
961 | ||
962 | static int umount_loop(sd_bus *bus, const char *backing_file) { | |
f0aac575 YW |
963 | _cleanup_free_ char *loop_dev = NULL; |
964 | int r; | |
6f6165bf YW |
965 | |
966 | assert(backing_file); | |
967 | ||
f0aac575 YW |
968 | r = find_loop_device(backing_file, &loop_dev); |
969 | if (r < 0) | |
aa46fa64 | 970 | return log_error_errno(r, r == -ENXIO ? "File %s is not mounted." : "Can't get loop device for %s: %m", backing_file); |
6f6165bf | 971 | |
f0aac575 | 972 | return umount_by_device(bus, loop_dev); |
9017f5d8 YW |
973 | } |
974 | ||
975 | static int action_umount( | |
976 | sd_bus *bus, | |
977 | int argc, | |
978 | char **argv) { | |
979 | ||
980 | int i, r, r2 = 0; | |
981 | ||
3747daa2 YW |
982 | if (arg_transport != BUS_TRANSPORT_LOCAL) { |
983 | for (i = optind; i < argc; i++) { | |
984 | _cleanup_free_ char *p = NULL; | |
985 | ||
986 | p = strdup(argv[i]); | |
987 | if (!p) | |
988 | return log_oom(); | |
989 | ||
858d36c1 | 990 | path_simplify(p, false); |
3747daa2 YW |
991 | |
992 | r = stop_mounts(bus, p); | |
993 | if (r < 0) | |
994 | r2 = r; | |
995 | } | |
996 | return r2; | |
997 | } | |
998 | ||
9017f5d8 | 999 | for (i = optind; i < argc; i++) { |
5bc9f949 | 1000 | _cleanup_free_ char *u = NULL, *p = NULL; |
6f6165bf | 1001 | struct stat st; |
9017f5d8 YW |
1002 | |
1003 | u = fstab_node_to_udev_node(argv[i]); | |
1004 | if (!u) | |
1005 | return log_oom(); | |
9017f5d8 | 1006 | |
5bc9f949 | 1007 | r = chase_symlinks(u, NULL, 0, &p); |
9017f5d8 | 1008 | if (r < 0) { |
02a8bd65 | 1009 | r2 = log_error_errno(r, "Failed to make path %s absolute: %m", argv[i]); |
9017f5d8 YW |
1010 | continue; |
1011 | } | |
1012 | ||
6f6165bf | 1013 | if (stat(p, &st) < 0) |
02a8bd65 | 1014 | return log_error_errno(errno, "Can't stat %s (from %s): %m", p, argv[i]); |
9017f5d8 | 1015 | |
6f6165bf YW |
1016 | if (S_ISBLK(st.st_mode)) |
1017 | r = umount_by_device(bus, p); | |
1018 | else if (S_ISREG(st.st_mode)) | |
1019 | r = umount_loop(bus, p); | |
1020 | else if (S_ISDIR(st.st_mode)) | |
1021 | r = stop_mounts(bus, p); | |
1022 | else { | |
02a8bd65 | 1023 | log_error("Invalid file type: %s (from %s)", p, argv[i]); |
6f6165bf YW |
1024 | r = -EINVAL; |
1025 | } | |
1026 | ||
1027 | if (r < 0) | |
9017f5d8 YW |
1028 | r2 = r; |
1029 | } | |
1030 | ||
1031 | return r2; | |
1032 | } | |
1033 | ||
450442cf LP |
1034 | static int acquire_mount_type(struct udev_device *d) { |
1035 | const char *v; | |
1036 | ||
1037 | assert(d); | |
1038 | ||
1039 | if (arg_mount_type) | |
1040 | return 0; | |
1041 | ||
1042 | v = udev_device_get_property_value(d, "ID_FS_TYPE"); | |
1043 | if (isempty(v)) | |
1044 | return 0; | |
1045 | ||
1046 | arg_mount_type = strdup(v); | |
1047 | if (!arg_mount_type) | |
1048 | return log_oom(); | |
1049 | ||
1050 | log_debug("Discovered type=%s", arg_mount_type); | |
1051 | return 1; | |
1052 | } | |
1053 | ||
1054 | static int acquire_mount_options(struct udev_device *d) { | |
1055 | const char *v; | |
1056 | ||
1057 | if (arg_mount_options) | |
1058 | return 0; | |
1059 | ||
1060 | v = udev_device_get_property_value(d, "SYSTEMD_MOUNT_OPTIONS"); | |
1061 | if (isempty(v)) | |
1062 | return 0; | |
1063 | ||
1064 | arg_mount_options = strdup(v); | |
1065 | if (!arg_mount_options) | |
1066 | return log_oom(); | |
1067 | ||
1068 | log_debug("Discovered options=%s", arg_mount_options); | |
1069 | return 1; | |
1070 | } | |
1071 | ||
1072 | static const char *get_model(struct udev_device *d) { | |
1073 | const char *model; | |
1074 | ||
1075 | assert(d); | |
1076 | ||
1077 | model = udev_device_get_property_value(d, "ID_MODEL_FROM_DATABASE"); | |
1078 | if (model) | |
1079 | return model; | |
1080 | ||
1081 | return udev_device_get_property_value(d, "ID_MODEL"); | |
1082 | } | |
1083 | ||
1084 | static const char* get_label(struct udev_device *d) { | |
1085 | const char *label; | |
1086 | ||
1087 | assert(d); | |
1088 | ||
1089 | label = udev_device_get_property_value(d, "ID_FS_LABEL"); | |
1090 | if (label) | |
1091 | return label; | |
1092 | ||
1093 | return udev_device_get_property_value(d, "ID_PART_ENTRY_NAME"); | |
1094 | } | |
1095 | ||
1096 | static int acquire_mount_where(struct udev_device *d) { | |
1097 | const char *v; | |
1098 | ||
1099 | if (arg_mount_where) | |
1100 | return 0; | |
1101 | ||
1102 | v = udev_device_get_property_value(d, "SYSTEMD_MOUNT_WHERE"); | |
1103 | if (isempty(v)) { | |
1104 | _cleanup_free_ char *escaped = NULL; | |
1105 | const char *name; | |
1106 | ||
1107 | name = get_label(d); | |
1108 | if (!name) | |
1109 | name = get_model(d); | |
1110 | if (!name) { | |
1111 | const char *dn; | |
1112 | ||
1113 | dn = udev_device_get_devnode(d); | |
1114 | if (!dn) | |
1115 | return 0; | |
1116 | ||
1117 | name = basename(dn); | |
1118 | } | |
1119 | ||
1120 | escaped = xescape(name, "\\"); | |
f0aac575 YW |
1121 | if (!escaped) |
1122 | return log_oom(); | |
450442cf LP |
1123 | if (!filename_is_valid(escaped)) |
1124 | return 0; | |
1125 | ||
605405c6 | 1126 | arg_mount_where = strjoin("/run/media/system/", escaped); |
450442cf LP |
1127 | } else |
1128 | arg_mount_where = strdup(v); | |
1129 | ||
1130 | if (!arg_mount_where) | |
1131 | return log_oom(); | |
1132 | ||
1133 | log_debug("Discovered where=%s", arg_mount_where); | |
1134 | return 1; | |
1135 | } | |
1136 | ||
f0aac575 YW |
1137 | static int acquire_mount_where_for_loop_dev(const char *loop_dev) { |
1138 | _cleanup_strv_free_ char **list = NULL; | |
1139 | int r; | |
1140 | ||
1141 | if (arg_mount_where) | |
1142 | return 0; | |
1143 | ||
1144 | r = find_mount_points(loop_dev, &list); | |
1145 | if (r < 0) | |
1146 | return r; | |
1147 | else if (r == 0) { | |
1148 | log_error("Can't find mount point of %s. It is expected that %s is already mounted on a place.", loop_dev, loop_dev); | |
1149 | return -EINVAL; | |
1150 | } else if (r >= 2) { | |
1151 | log_error("%s is mounted on %d places. It is expected that %s is mounted on a place.", loop_dev, r, loop_dev); | |
1152 | return -EINVAL; | |
1153 | } | |
1154 | ||
1155 | arg_mount_where = strdup(list[0]); | |
1156 | if (!arg_mount_where) | |
1157 | return log_oom(); | |
1158 | ||
1159 | log_debug("Discovered where=%s", arg_mount_where); | |
1160 | return 1; | |
1161 | } | |
1162 | ||
450442cf LP |
1163 | static int acquire_description(struct udev_device *d) { |
1164 | const char *model, *label; | |
1165 | ||
1166 | if (arg_description) | |
1167 | return 0; | |
1168 | ||
1169 | model = get_model(d); | |
1170 | ||
1171 | label = get_label(d); | |
1172 | if (!label) | |
1173 | label = udev_device_get_property_value(d, "ID_PART_ENTRY_NUMBER"); | |
1174 | ||
1175 | if (model && label) | |
605405c6 | 1176 | arg_description = strjoin(model, " ", label); |
450442cf LP |
1177 | else if (label) |
1178 | arg_description = strdup(label); | |
1179 | else if (model) | |
1180 | arg_description = strdup(model); | |
1181 | else | |
05b4d3b5 | 1182 | return 0; |
450442cf LP |
1183 | |
1184 | if (!arg_description) | |
1185 | return log_oom(); | |
1186 | ||
1187 | log_debug("Discovered description=%s", arg_description); | |
1188 | return 1; | |
1189 | } | |
1190 | ||
1191 | static int acquire_removable(struct udev_device *d) { | |
1192 | const char *v; | |
1193 | ||
1194 | /* Shortcut this if there's no reason to check it */ | |
1195 | if (arg_action != ACTION_DEFAULT && arg_timeout_idle_set && arg_bind_device >= 0) | |
1196 | return 0; | |
1197 | ||
1198 | for (;;) { | |
1199 | v = udev_device_get_sysattr_value(d, "removable"); | |
1200 | if (v) | |
1201 | break; | |
1202 | ||
1203 | d = udev_device_get_parent(d); | |
1204 | if (!d) | |
1205 | return 0; | |
1206 | ||
1207 | if (!streq_ptr(udev_device_get_subsystem(d), "block")) | |
1208 | return 0; | |
1209 | } | |
1210 | ||
1211 | if (parse_boolean(v) <= 0) | |
1212 | return 0; | |
1213 | ||
1214 | log_debug("Discovered removable device."); | |
1215 | ||
1216 | if (arg_action == ACTION_DEFAULT) { | |
1217 | log_debug("Automatically turning on automount."); | |
1218 | arg_action = ACTION_AUTOMOUNT; | |
1219 | } | |
1220 | ||
1221 | if (!arg_timeout_idle_set) { | |
1222 | log_debug("Setting idle timeout to 1s."); | |
1223 | arg_timeout_idle = USEC_PER_SEC; | |
1224 | } | |
1225 | ||
1226 | if (arg_bind_device < 0) { | |
1227 | log_debug("Binding automount unit to device."); | |
1228 | arg_bind_device = true; | |
1229 | } | |
1230 | ||
1231 | return 1; | |
1232 | } | |
1233 | ||
f0aac575 | 1234 | static int discover_loop_backing_file(void) { |
8e766630 LP |
1235 | _cleanup_(udev_device_unrefp) struct udev_device *d = NULL; |
1236 | _cleanup_(udev_unrefp) struct udev *udev = NULL; | |
f0aac575 | 1237 | _cleanup_free_ char *loop_dev = NULL; |
450442cf LP |
1238 | struct stat st; |
1239 | const char *v; | |
1240 | int r; | |
1241 | ||
f0aac575 | 1242 | r = find_loop_device(arg_mount_what, &loop_dev); |
aa46fa64 | 1243 | if (r < 0 && r != -ENXIO) |
f0aac575 YW |
1244 | return log_error_errno(errno, "Can't get loop device for %s: %m", arg_mount_what); |
1245 | ||
aa46fa64 | 1246 | if (r == -ENXIO) { |
f0aac575 YW |
1247 | _cleanup_free_ char *escaped = NULL; |
1248 | ||
1249 | if (arg_mount_where) | |
1250 | return 0; | |
1251 | ||
1252 | escaped = xescape(basename(arg_mount_what), "\\"); | |
1253 | if (!escaped) | |
1254 | return log_oom(); | |
514368ad LP |
1255 | if (!filename_is_valid(escaped)) { |
1256 | log_error("Escaped name %s is not a valid filename.", escaped); | |
f0aac575 | 1257 | return -EINVAL; |
514368ad | 1258 | } |
f0aac575 YW |
1259 | |
1260 | arg_mount_where = strjoin("/run/media/system/", escaped); | |
1261 | if (!arg_mount_where) | |
1262 | return log_oom(); | |
1263 | ||
1264 | log_debug("Discovered where=%s", arg_mount_where); | |
450442cf | 1265 | return 0; |
f0aac575 YW |
1266 | } |
1267 | ||
1268 | if (stat(loop_dev, &st) < 0) | |
1269 | return log_error_errno(errno, "Can't stat %s: %m", loop_dev); | |
450442cf | 1270 | |
f0aac575 YW |
1271 | if (!S_ISBLK(st.st_mode)) { |
1272 | log_error("Invalid file type: %s", loop_dev); | |
450442cf LP |
1273 | return -EINVAL; |
1274 | } | |
1275 | ||
f0aac575 YW |
1276 | udev = udev_new(); |
1277 | if (!udev) | |
1278 | return log_oom(); | |
1279 | ||
1280 | d = udev_device_new_from_devnum(udev, 'b', st.st_rdev); | |
1281 | if (!d) | |
1282 | return log_oom(); | |
1283 | ||
1284 | v = udev_device_get_property_value(d, "ID_FS_USAGE"); | |
1285 | if (!streq_ptr(v, "filesystem")) { | |
1286 | log_error("%s does not contain a known file system.", arg_mount_what); | |
1287 | return -EINVAL; | |
1288 | } | |
1289 | ||
1290 | r = acquire_mount_type(d); | |
1291 | if (r < 0) | |
1292 | return r; | |
1293 | ||
1294 | r = acquire_mount_options(d); | |
1295 | if (r < 0) | |
1296 | return r; | |
1297 | ||
1298 | r = acquire_mount_where_for_loop_dev(loop_dev); | |
1299 | if (r < 0) | |
1300 | return r; | |
1301 | ||
1302 | r = acquire_description(d); | |
1303 | if (r < 0) | |
1304 | return r; | |
1305 | ||
1306 | return 0; | |
1307 | } | |
1308 | ||
1309 | static int discover_device(void) { | |
8e766630 LP |
1310 | _cleanup_(udev_device_unrefp) struct udev_device *d = NULL; |
1311 | _cleanup_(udev_unrefp) struct udev *udev = NULL; | |
f0aac575 YW |
1312 | struct stat st; |
1313 | const char *v; | |
1314 | int r; | |
1315 | ||
450442cf LP |
1316 | if (stat(arg_mount_what, &st) < 0) |
1317 | return log_error_errno(errno, "Can't stat %s: %m", arg_mount_what); | |
1318 | ||
f0aac575 YW |
1319 | if (S_ISREG(st.st_mode)) |
1320 | return discover_loop_backing_file(); | |
1321 | ||
450442cf | 1322 | if (!S_ISBLK(st.st_mode)) { |
f0aac575 YW |
1323 | log_error("Invalid file type: %s", arg_mount_what); |
1324 | return -EINVAL; | |
450442cf LP |
1325 | } |
1326 | ||
1327 | udev = udev_new(); | |
1328 | if (!udev) | |
1329 | return log_oom(); | |
1330 | ||
1331 | d = udev_device_new_from_devnum(udev, 'b', st.st_rdev); | |
1332 | if (!d) | |
1333 | return log_oom(); | |
1334 | ||
1335 | v = udev_device_get_property_value(d, "ID_FS_USAGE"); | |
1336 | if (!streq_ptr(v, "filesystem")) { | |
9017f5d8 | 1337 | log_error("%s does not contain a known file system.", arg_mount_what); |
450442cf LP |
1338 | return -EINVAL; |
1339 | } | |
1340 | ||
1341 | r = acquire_mount_type(d); | |
1342 | if (r < 0) | |
1343 | return r; | |
1344 | ||
1345 | r = acquire_mount_options(d); | |
1346 | if (r < 0) | |
1347 | return r; | |
1348 | ||
1349 | r = acquire_mount_where(d); | |
1350 | if (r < 0) | |
1351 | return r; | |
1352 | ||
1353 | r = acquire_description(d); | |
1354 | if (r < 0) | |
1355 | return r; | |
1356 | ||
1357 | r = acquire_removable(d); | |
1358 | if (r < 0) | |
1359 | return r; | |
1360 | ||
1361 | return 0; | |
1362 | } | |
1363 | ||
1364 | enum { | |
1365 | COLUMN_NODE, | |
1366 | COLUMN_PATH, | |
1367 | COLUMN_MODEL, | |
1368 | COLUMN_WWN, | |
1369 | COLUMN_FSTYPE, | |
1370 | COLUMN_LABEL, | |
1371 | COLUMN_UUID, | |
1372 | _COLUMN_MAX, | |
1373 | }; | |
1374 | ||
1375 | struct item { | |
1376 | char* columns[_COLUMN_MAX]; | |
1377 | }; | |
1378 | ||
1379 | static int compare_item(const void *a, const void *b) { | |
1380 | const struct item *x = a, *y = b; | |
1381 | ||
1382 | if (x->columns[COLUMN_NODE] == y->columns[COLUMN_NODE]) | |
1383 | return 0; | |
1384 | if (!x->columns[COLUMN_NODE]) | |
1385 | return 1; | |
1386 | if (!y->columns[COLUMN_NODE]) | |
1387 | return -1; | |
1388 | ||
1389 | return path_compare(x->columns[COLUMN_NODE], y->columns[COLUMN_NODE]); | |
1390 | } | |
1391 | ||
1392 | static int list_devices(void) { | |
1393 | ||
1394 | static const char * const titles[_COLUMN_MAX] = { | |
1395 | [COLUMN_NODE] = "NODE", | |
1396 | [COLUMN_PATH] = "PATH", | |
1397 | [COLUMN_MODEL] = "MODEL", | |
1398 | [COLUMN_WWN] = "WWN", | |
1399 | [COLUMN_FSTYPE] = "TYPE", | |
1400 | [COLUMN_LABEL] = "LABEL", | |
1401 | [COLUMN_UUID] = "UUID" | |
1402 | }; | |
1403 | ||
8e766630 LP |
1404 | _cleanup_(udev_enumerate_unrefp) struct udev_enumerate *e = NULL; |
1405 | _cleanup_(udev_unrefp) struct udev *udev = NULL; | |
450442cf LP |
1406 | struct udev_list_entry *item = NULL, *first = NULL; |
1407 | size_t n_allocated = 0, n = 0, i; | |
1408 | size_t column_width[_COLUMN_MAX]; | |
1409 | struct item *items = NULL; | |
1410 | unsigned c; | |
1411 | int r; | |
1412 | ||
1413 | for (c = 0; c < _COLUMN_MAX; c++) | |
1414 | column_width[c] = strlen(titles[c]); | |
1415 | ||
1416 | udev = udev_new(); | |
1417 | if (!udev) | |
1418 | return log_oom(); | |
1419 | ||
1420 | e = udev_enumerate_new(udev); | |
1421 | if (!e) | |
1422 | return log_oom(); | |
1423 | ||
1424 | r = udev_enumerate_add_match_subsystem(e, "block"); | |
1425 | if (r < 0) | |
1426 | return log_error_errno(r, "Failed to add block match: %m"); | |
1427 | ||
1428 | r = udev_enumerate_add_match_property(e, "ID_FS_USAGE", "filesystem"); | |
1429 | if (r < 0) | |
1430 | return log_error_errno(r, "Failed to add property match: %m"); | |
1431 | ||
1432 | r = udev_enumerate_scan_devices(e); | |
1433 | if (r < 0) | |
1434 | return log_error_errno(r, "Failed to scan devices: %m"); | |
1435 | ||
1436 | first = udev_enumerate_get_list_entry(e); | |
1437 | udev_list_entry_foreach(item, first) { | |
8e766630 | 1438 | _cleanup_(udev_device_unrefp) struct udev_device *d; |
450442cf LP |
1439 | struct item *j; |
1440 | ||
1441 | d = udev_device_new_from_syspath(udev, udev_list_entry_get_name(item)); | |
1442 | if (!d) { | |
1443 | r = log_oom(); | |
1444 | goto finish; | |
1445 | } | |
1446 | ||
1447 | if (!GREEDY_REALLOC0(items, n_allocated, n+1)) { | |
1448 | r = log_oom(); | |
1449 | goto finish; | |
1450 | } | |
1451 | ||
1452 | j = items + n++; | |
1453 | ||
1454 | for (c = 0; c < _COLUMN_MAX; c++) { | |
6fd667e5 | 1455 | const char *x = NULL; |
450442cf LP |
1456 | size_t k; |
1457 | ||
1458 | switch (c) { | |
1459 | ||
1460 | case COLUMN_NODE: | |
1461 | x = udev_device_get_devnode(d); | |
1462 | break; | |
1463 | ||
1464 | case COLUMN_PATH: | |
1465 | x = udev_device_get_property_value(d, "ID_PATH"); | |
1466 | break; | |
1467 | ||
1468 | case COLUMN_MODEL: | |
1469 | x = get_model(d); | |
1470 | break; | |
1471 | ||
1472 | case COLUMN_WWN: | |
1473 | x = udev_device_get_property_value(d, "ID_WWN"); | |
1474 | break; | |
1475 | ||
1476 | case COLUMN_FSTYPE: | |
1477 | x = udev_device_get_property_value(d, "ID_FS_TYPE"); | |
1478 | break; | |
1479 | ||
1480 | case COLUMN_LABEL: | |
1481 | x = get_label(d); | |
1482 | break; | |
1483 | ||
1484 | case COLUMN_UUID: | |
1485 | x = udev_device_get_property_value(d, "ID_FS_UUID"); | |
1486 | break; | |
1487 | } | |
1488 | ||
1489 | if (isempty(x)) | |
1490 | continue; | |
1491 | ||
1492 | j->columns[c] = strdup(x); | |
1493 | if (!j->columns[c]) { | |
1494 | r = log_oom(); | |
1495 | goto finish; | |
1496 | } | |
1497 | ||
1498 | k = strlen(x); | |
1499 | if (k > column_width[c]) | |
1500 | column_width[c] = k; | |
1501 | } | |
1502 | } | |
1503 | ||
1504 | if (n == 0) { | |
1505 | log_info("No devices found."); | |
1506 | goto finish; | |
1507 | } | |
1508 | ||
1509 | qsort_safe(items, n, sizeof(struct item), compare_item); | |
1510 | ||
ee5324aa | 1511 | (void) pager_open(arg_no_pager, false); |
450442cf LP |
1512 | |
1513 | fputs(ansi_underline(), stdout); | |
1514 | for (c = 0; c < _COLUMN_MAX; c++) { | |
1515 | if (c > 0) | |
1516 | fputc(' ', stdout); | |
1517 | ||
1518 | printf("%-*s", (int) column_width[c], titles[c]); | |
1519 | } | |
1520 | fputs(ansi_normal(), stdout); | |
1521 | fputc('\n', stdout); | |
1522 | ||
1523 | for (i = 0; i < n; i++) { | |
1524 | for (c = 0; c < _COLUMN_MAX; c++) { | |
1525 | if (c > 0) | |
1526 | fputc(' ', stdout); | |
1527 | ||
1528 | printf("%-*s", (int) column_width[c], strna(items[i].columns[c])); | |
1529 | } | |
1530 | fputc('\n', stdout); | |
1531 | } | |
1532 | ||
1533 | r = 0; | |
1534 | ||
1535 | finish: | |
1536 | for (i = 0; i < n; i++) | |
1537 | for (c = 0; c < _COLUMN_MAX; c++) | |
1538 | free(items[i].columns[c]); | |
1539 | ||
1540 | free(items); | |
1541 | return r; | |
1542 | } | |
1543 | ||
1544 | int main(int argc, char* argv[]) { | |
3b2f3033 | 1545 | sd_bus *bus = NULL; |
450442cf LP |
1546 | int r; |
1547 | ||
1548 | log_parse_environment(); | |
1549 | log_open(); | |
1550 | ||
1551 | r = parse_argv(argc, argv); | |
1552 | if (r <= 0) | |
1553 | goto finish; | |
1554 | ||
1555 | if (arg_action == ACTION_LIST) { | |
1556 | r = list_devices(); | |
1557 | goto finish; | |
1558 | } | |
1559 | ||
9017f5d8 YW |
1560 | r = bus_connect_transport_systemd(arg_transport, arg_host, arg_user, &bus); |
1561 | if (r < 0) { | |
1562 | log_error_errno(r, "Failed to create bus connection: %m"); | |
1563 | goto finish; | |
1564 | } | |
1565 | ||
1566 | if (arg_action == ACTION_UMOUNT) { | |
1567 | r = action_umount(bus, argc, argv); | |
1568 | goto finish; | |
1569 | } | |
1570 | ||
99be45a4 LP |
1571 | if (!path_is_normalized(arg_mount_what)) { |
1572 | log_error("Path contains non-normalized components: %s", arg_mount_what); | |
f0aac575 | 1573 | r = -EINVAL; |
450442cf | 1574 | goto finish; |
f0aac575 YW |
1575 | } |
1576 | ||
1577 | if (arg_discover) { | |
1578 | r = discover_device(); | |
1579 | if (r < 0) | |
1580 | goto finish; | |
1581 | } | |
1582 | ||
450442cf LP |
1583 | if (!arg_mount_where) { |
1584 | log_error("Can't figure out where to mount %s.", arg_mount_what); | |
1585 | r = -EINVAL; | |
1586 | goto finish; | |
1587 | } | |
1588 | ||
450442cf LP |
1589 | if (path_equal(arg_mount_where, "/")) { |
1590 | log_error("Refusing to operate on root directory."); | |
1591 | r = -EINVAL; | |
1592 | goto finish; | |
1593 | } | |
1594 | ||
99be45a4 LP |
1595 | if (!path_is_normalized(arg_mount_where)) { |
1596 | log_error("Path contains non-normalized components: %s", arg_mount_where); | |
450442cf LP |
1597 | r = -EINVAL; |
1598 | goto finish; | |
1599 | } | |
1600 | ||
1601 | if (streq_ptr(arg_mount_type, "auto")) | |
1602 | arg_mount_type = mfree(arg_mount_type); | |
1603 | if (streq_ptr(arg_mount_options, "defaults")) | |
1604 | arg_mount_options = mfree(arg_mount_options); | |
1605 | ||
1606 | if (!is_device_path(arg_mount_what)) | |
1607 | arg_fsck = false; | |
1608 | ||
1609 | if (arg_fsck && arg_mount_type && arg_transport == BUS_TRANSPORT_LOCAL) { | |
1610 | r = fsck_exists(arg_mount_type); | |
1611 | if (r < 0) | |
1612 | log_warning_errno(r, "Couldn't determine whether fsck for %s exists, proceeding anyway.", arg_mount_type); | |
1613 | else if (r == 0) { | |
1614 | log_debug("Disabling file system check as fsck for %s doesn't exist.", arg_mount_type); | |
1615 | arg_fsck = false; /* fsck doesn't exist, let's not attempt it */ | |
1616 | } | |
1617 | } | |
1618 | ||
e09fc884 ZJS |
1619 | /* The kernel (properly) refuses mounting file systems with unknown uid=,gid= options, |
1620 | * but not for all filesystem types. Let's try to catch the cases where the option | |
1621 | * would be used if the file system does not support it. It is also possible to | |
1622 | * autodetect the file system, but that's only possible with disk-based file systems | |
1623 | * which incidentally seem to be implemented more carefully and reject unknown options, | |
1624 | * so it's probably OK that we do the check only when the type is specified. | |
1625 | */ | |
1626 | if (arg_mount_type && | |
1627 | !streq(arg_mount_type, "auto") && | |
1628 | arg_uid != UID_INVALID && | |
1629 | !fstype_can_uid_gid(arg_mount_type)) { | |
1630 | log_error("File system type %s is not known to support uid=/gid=, refusing.", | |
1631 | arg_mount_type); | |
1632 | r = -EOPNOTSUPP; | |
1633 | goto finish; | |
1634 | } | |
1635 | ||
450442cf LP |
1636 | switch (arg_action) { |
1637 | ||
1638 | case ACTION_MOUNT: | |
1639 | case ACTION_DEFAULT: | |
1640 | r = start_transient_mount(bus, argv + optind); | |
1641 | break; | |
1642 | ||
1643 | case ACTION_AUTOMOUNT: | |
1644 | r = start_transient_automount(bus, argv + optind); | |
1645 | break; | |
1646 | ||
1647 | default: | |
1648 | assert_not_reached("Unexpected action."); | |
1649 | } | |
1650 | ||
1651 | finish: | |
0a84daa5 FB |
1652 | /* make sure we terminate the bus connection first, and then close the |
1653 | * pager, see issue #3543 for the details. */ | |
a3c56345 | 1654 | bus = sd_bus_flush_close_unref(bus); |
450442cf LP |
1655 | pager_close(); |
1656 | ||
1657 | free(arg_mount_what); | |
1658 | free(arg_mount_where); | |
1659 | free(arg_mount_type); | |
1660 | free(arg_mount_options); | |
1661 | free(arg_description); | |
1662 | strv_free(arg_property); | |
1663 | strv_free(arg_automount_property); | |
1664 | ||
1665 | return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS; | |
1666 | } |