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