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