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[thirdparty/systemd.git] / src / mount / mount-tool.c
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 STATIC_DESTRUCTOR_REGISTER(arg_mount_what, freep);
69 STATIC_DESTRUCTOR_REGISTER(arg_mount_where, freep);
70 STATIC_DESTRUCTOR_REGISTER(arg_mount_type, freep);
71 STATIC_DESTRUCTOR_REGISTER(arg_mount_options, freep);
72 STATIC_DESTRUCTOR_REGISTER(arg_description, freep);
73 STATIC_DESTRUCTOR_REGISTER(arg_property, strv_freep);
74 STATIC_DESTRUCTOR_REGISTER(arg_automount_property, strv_freep);
75
76 static int help(void) {
77 _cleanup_free_ char *link = NULL;
78 int r;
79
80 r = terminal_urlify_man("systemd-mount", "1", &link);
81 if (r < 0)
82 return log_oom();
83
84 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 , streq(program_invocation_short_name, "systemd-umount") ? "" : "--umount "
115 , link
116 );
117
118 return 0;
119 }
120
121 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 assert(argc >= 0);
175 assert(argv);
176
177 if (strstr(program_invocation_short_name, "systemd-umount"))
178 arg_action = ACTION_UMOUNT;
179
180 while ((c = getopt_long(argc, argv, "hqH:M:t:o:p:AuG", options, NULL)) >= 0)
181
182 switch (c) {
183
184 case 'h':
185 return help();
186
187 case ARG_VERSION:
188 return version();
189
190 case ARG_NO_BLOCK:
191 arg_no_block = true;
192 break;
193
194 case ARG_NO_PAGER:
195 arg_pager_flags |= PAGER_DISABLE;
196 break;
197
198 case ARG_NO_ASK_PASSWORD:
199 arg_ask_password = false;
200 break;
201
202 case 'q':
203 arg_quiet = true;
204 break;
205
206 case ARG_USER:
207 arg_user = true;
208 break;
209
210 case ARG_SYSTEM:
211 arg_user = false;
212 break;
213
214 case 'H':
215 arg_transport = BUS_TRANSPORT_REMOTE;
216 arg_host = optarg;
217 break;
218
219 case 'M':
220 arg_transport = BUS_TRANSPORT_MACHINE;
221 arg_host = optarg;
222 break;
223
224 case ARG_DISCOVER:
225 arg_discover = true;
226 break;
227
228 case 't':
229 if (free_and_strdup(&arg_mount_type, optarg) < 0)
230 return log_oom();
231 break;
232
233 case 'o':
234 if (free_and_strdup(&arg_mount_options, optarg) < 0)
235 return log_oom();
236 break;
237
238 case ARG_OWNER: {
239 const char *user = optarg;
240
241 r = get_user_creds(&user, &arg_uid, &arg_gid, NULL, NULL, 0);
242 if (r < 0)
243 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 break;
248 }
249
250 case ARG_FSCK:
251 r = parse_boolean(optarg);
252 if (r < 0)
253 return log_error_errno(r, "Failed to parse --fsck= argument: %s", optarg);
254
255 arg_fsck = r;
256 break;
257
258 case ARG_DESCRIPTION:
259 if (free_and_strdup(&arg_description, optarg) < 0)
260 return log_oom();
261 break;
262
263 case 'p':
264 if (strv_extend(&arg_property, optarg) < 0)
265 return log_oom();
266
267 break;
268
269 case 'A':
270 arg_action = ACTION_AUTOMOUNT;
271 break;
272
273 case ARG_AUTOMOUNT:
274 r = parse_boolean(optarg);
275 if (r < 0)
276 return log_error_errno(r, "--automount= expects a valid boolean parameter: %s", optarg);
277
278 arg_action = r ? ACTION_AUTOMOUNT : ACTION_MOUNT;
279 break;
280
281 case ARG_TIMEOUT_IDLE:
282 r = parse_sec(optarg, &arg_timeout_idle);
283 if (r < 0)
284 return log_error_errno(r, "Failed to parse timeout: %s", optarg);
285
286 break;
287
288 case ARG_AUTOMOUNT_PROPERTY:
289 if (strv_extend(&arg_automount_property, optarg) < 0)
290 return log_oom();
291
292 break;
293
294 case ARG_BIND_DEVICE:
295 arg_bind_device = true;
296 break;
297
298 case ARG_LIST:
299 arg_action = ACTION_LIST;
300 break;
301
302 case 'u':
303 arg_action = ACTION_UMOUNT;
304 break;
305
306 case 'G':
307 arg_aggressive_gc = true;
308 break;
309
310 case '?':
311 return -EINVAL;
312
313 default:
314 assert_not_reached("Unhandled option");
315 }
316
317 if (arg_user && arg_transport != BUS_TRANSPORT_LOCAL)
318 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
319 "Execution in user context is not supported on non-local systems.");
320
321 if (arg_action == ACTION_LIST) {
322 if (optind < argc)
323 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
324 "Too many arguments.");
325
326 if (arg_transport != BUS_TRANSPORT_LOCAL)
327 return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
328 "Listing devices only supported locally.");
329 } else if (arg_action == ACTION_UMOUNT) {
330 if (optind >= argc)
331 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
332 "At least one argument required.");
333
334 if (arg_transport != BUS_TRANSPORT_LOCAL) {
335 int i;
336
337 for (i = optind; i < argc; i++)
338 if (!path_is_absolute(argv[i]) )
339 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
340 "Only absolute path is supported: %s", argv[i]);
341 }
342 } else {
343 if (optind >= argc)
344 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
345 "At least one argument required.");
346
347 if (argc > optind+2)
348 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
349 "At most two arguments required.");
350
351 if (arg_mount_type && (fstype_is_api_vfs(arg_mount_type) || fstype_is_network(arg_mount_type))) {
352 arg_mount_what = strdup(argv[optind]);
353 if (!arg_mount_what)
354 return log_oom();
355
356 } else if (arg_transport == BUS_TRANSPORT_LOCAL) {
357 _cleanup_free_ char *u = NULL;
358
359 u = fstab_node_to_udev_node(argv[optind]);
360 if (!u)
361 return log_oom();
362
363 r = chase_symlinks(u, NULL, 0, &arg_mount_what);
364 if (r < 0)
365 return log_error_errno(r, "Failed to make path %s absolute: %m", u);
366 } else {
367 arg_mount_what = strdup(argv[optind]);
368 if (!arg_mount_what)
369 return log_oom();
370
371 path_simplify(arg_mount_what, false);
372
373 if (!path_is_absolute(arg_mount_what))
374 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
375 "Only absolute path is supported: %s", arg_mount_what);
376 }
377
378 if (argc > optind+1) {
379 if (arg_transport == BUS_TRANSPORT_LOCAL) {
380 r = chase_symlinks(argv[optind+1], NULL, CHASE_NONEXISTENT, &arg_mount_where);
381 if (r < 0)
382 return log_error_errno(r, "Failed to make path %s absolute: %m", argv[optind+1]);
383 } else {
384 arg_mount_where = strdup(argv[optind+1]);
385 if (!arg_mount_where)
386 return log_oom();
387
388 path_simplify(arg_mount_where, false);
389
390 if (!path_is_absolute(arg_mount_where))
391 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
392 "Only absolute path is supported: %s", arg_mount_where);
393 }
394 } else
395 arg_discover = true;
396
397 if (arg_discover && arg_transport != BUS_TRANSPORT_LOCAL)
398 return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
399 "Automatic mount location discovery is only supported locally.");
400 }
401
402 return 1;
403 }
404
405 static int transient_unit_set_properties(sd_bus_message *m, UnitType t, char **properties) {
406 int r;
407
408 if (!isempty(arg_description)) {
409 r = sd_bus_message_append(m, "(sv)", "Description", "s", arg_description);
410 if (r < 0)
411 return r;
412 }
413
414 if (arg_bind_device && is_device_path(arg_mount_what)) {
415 _cleanup_free_ char *device_unit = NULL;
416
417 r = unit_name_from_path(arg_mount_what, ".device", &device_unit);
418 if (r < 0)
419 return r;
420
421 r = sd_bus_message_append(m, "(sv)(sv)",
422 "After", "as", 1, device_unit,
423 "BindsTo", "as", 1, device_unit);
424 if (r < 0)
425 return r;
426 }
427
428 if (arg_aggressive_gc) {
429 r = sd_bus_message_append(m, "(sv)", "CollectMode", "s", "inactive-or-failed");
430 if (r < 0)
431 return r;
432 }
433
434 r = bus_append_unit_property_assignment_many(m, t, properties);
435 if (r < 0)
436 return r;
437
438 return 0;
439 }
440
441 static int transient_mount_set_properties(sd_bus_message *m) {
442 _cleanup_free_ char *options = NULL;
443 int r;
444
445 assert(m);
446
447 r = transient_unit_set_properties(m, UNIT_MOUNT, arg_property);
448 if (r < 0)
449 return r;
450
451 if (arg_mount_what) {
452 r = sd_bus_message_append(m, "(sv)", "What", "s", arg_mount_what);
453 if (r < 0)
454 return r;
455 }
456
457 if (arg_mount_type) {
458 r = sd_bus_message_append(m, "(sv)", "Type", "s", arg_mount_type);
459 if (r < 0)
460 return r;
461 }
462
463 /* Prepend uid=…,gid=… if arg_uid is set */
464 if (arg_uid != UID_INVALID) {
465 r = asprintf(&options,
466 "uid=" UID_FMT ",gid=" GID_FMT "%s%s",
467 arg_uid, arg_gid,
468 arg_mount_options ? "," : "", strempty(arg_mount_options));
469 if (r < 0)
470 return -ENOMEM;
471 }
472
473 if (options || arg_mount_options) {
474 log_debug("Using mount options: %s", options ?: arg_mount_options);
475
476 r = sd_bus_message_append(m, "(sv)", "Options", "s", options ?: arg_mount_options);
477 if (r < 0)
478 return r;
479 } else
480 log_debug("Not using any mount options");
481
482 if (arg_fsck) {
483 _cleanup_free_ char *fsck = NULL;
484
485 r = unit_name_from_path_instance("systemd-fsck", arg_mount_what, ".service", &fsck);
486 if (r < 0)
487 return r;
488
489 r = sd_bus_message_append(m,
490 "(sv)(sv)",
491 "Requires", "as", 1, fsck,
492 "After", "as", 1, fsck);
493 if (r < 0)
494 return r;
495 }
496
497 return 0;
498 }
499
500 static int transient_automount_set_properties(sd_bus_message *m) {
501 int r;
502
503 assert(m);
504
505 r = transient_unit_set_properties(m, UNIT_AUTOMOUNT, arg_automount_property);
506 if (r < 0)
507 return r;
508
509 if (arg_timeout_idle != USEC_INFINITY) {
510 r = sd_bus_message_append(m, "(sv)", "TimeoutIdleUSec", "t", arg_timeout_idle);
511 if (r < 0)
512 return r;
513 }
514
515 return 0;
516 }
517
518 static int start_transient_mount(
519 sd_bus *bus,
520 char **argv) {
521
522 _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
523 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
524 _cleanup_(bus_wait_for_jobs_freep) BusWaitForJobs *w = NULL;
525 _cleanup_free_ char *mount_unit = NULL;
526 int r;
527
528 if (!arg_no_block) {
529 r = bus_wait_for_jobs_new(bus, &w);
530 if (r < 0)
531 return log_error_errno(r, "Could not watch jobs: %m");
532 }
533
534 r = unit_name_from_path(arg_mount_where, ".mount", &mount_unit);
535 if (r < 0)
536 return log_error_errno(r, "Failed to make mount unit name: %m");
537
538 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 if (r < 0)
546 return bus_log_create_error(r);
547
548 r = sd_bus_message_set_allow_interactive_authorization(m, arg_ask_password);
549 if (r < 0)
550 return bus_log_create_error(r);
551
552 /* Name and mode */
553 r = sd_bus_message_append(m, "ss", mount_unit, "fail");
554 if (r < 0)
555 return bus_log_create_error(r);
556
557 /* Properties */
558 r = sd_bus_message_open_container(m, 'a', "(sv)");
559 if (r < 0)
560 return bus_log_create_error(r);
561
562 r = transient_mount_set_properties(m);
563 if (r < 0)
564 return bus_log_create_error(r);
565
566 r = sd_bus_message_close_container(m);
567 if (r < 0)
568 return bus_log_create_error(r);
569
570 /* Auxiliary units */
571 r = sd_bus_message_append(m, "a(sa(sv))", 0);
572 if (r < 0)
573 return bus_log_create_error(r);
574
575 polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
576
577 r = sd_bus_call(bus, m, 0, &error, &reply);
578 if (r < 0)
579 return log_error_errno(r, "Failed to start transient mount unit: %s", bus_error_message(&error, r));
580
581 if (w) {
582 const char *object;
583
584 r = sd_bus_message_read(reply, "o", &object);
585 if (r < 0)
586 return bus_log_parse_error(r);
587
588 r = bus_wait_for_jobs_one(w, object, arg_quiet);
589 if (r < 0)
590 return r;
591 }
592
593 if (!arg_quiet)
594 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 return 0;
599 }
600
601 static int start_transient_automount(
602 sd_bus *bus,
603 char **argv) {
604
605 _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
606 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
607 _cleanup_(bus_wait_for_jobs_freep) BusWaitForJobs *w = NULL;
608 _cleanup_free_ char *automount_unit = NULL, *mount_unit = NULL;
609 int r;
610
611 if (!arg_no_block) {
612 r = bus_wait_for_jobs_new(bus, &w);
613 if (r < 0)
614 return log_error_errno(r, "Could not watch jobs: %m");
615 }
616
617 r = unit_name_from_path(arg_mount_where, ".automount", &automount_unit);
618 if (r < 0)
619 return log_error_errno(r, "Failed to make automount unit name: %m");
620
621 r = unit_name_from_path(arg_mount_where, ".mount", &mount_unit);
622 if (r < 0)
623 return log_error_errno(r, "Failed to make mount unit name: %m");
624
625 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 if (r < 0)
633 return bus_log_create_error(r);
634
635 r = sd_bus_message_set_allow_interactive_authorization(m, arg_ask_password);
636 if (r < 0)
637 return bus_log_create_error(r);
638
639 /* Name and mode */
640 r = sd_bus_message_append(m, "ss", automount_unit, "fail");
641 if (r < 0)
642 return bus_log_create_error(r);
643
644 /* Properties */
645 r = sd_bus_message_open_container(m, 'a', "(sv)");
646 if (r < 0)
647 return bus_log_create_error(r);
648
649 r = transient_automount_set_properties(m);
650 if (r < 0)
651 return bus_log_create_error(r);
652
653 r = sd_bus_message_close_container(m);
654 if (r < 0)
655 return bus_log_create_error(r);
656
657 /* Auxiliary units */
658 r = sd_bus_message_open_container(m, 'a', "(sa(sv))");
659 if (r < 0)
660 return bus_log_create_error(r);
661
662 r = sd_bus_message_open_container(m, 'r', "sa(sv)");
663 if (r < 0)
664 return bus_log_create_error(r);
665
666 r = sd_bus_message_append(m, "s", mount_unit);
667 if (r < 0)
668 return bus_log_create_error(r);
669
670 r = sd_bus_message_open_container(m, 'a', "(sv)");
671 if (r < 0)
672 return bus_log_create_error(r);
673
674 r = transient_mount_set_properties(m);
675 if (r < 0)
676 return bus_log_create_error(r);
677
678 r = sd_bus_message_close_container(m);
679 if (r < 0)
680 return bus_log_create_error(r);
681
682 r = sd_bus_message_close_container(m);
683 if (r < 0)
684 return bus_log_create_error(r);
685
686 r = sd_bus_message_close_container(m);
687 if (r < 0)
688 return bus_log_create_error(r);
689
690 polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
691
692 r = sd_bus_call(bus, m, 0, &error, &reply);
693 if (r < 0)
694 return log_error_errno(r, "Failed to start transient automount unit: %s", bus_error_message(&error, r));
695
696 if (w) {
697 const char *object;
698
699 r = sd_bus_message_read(reply, "o", &object);
700 if (r < 0)
701 return bus_log_parse_error(r);
702
703 r = bus_wait_for_jobs_one(w, object, arg_quiet);
704 if (r < 0)
705 return r;
706 }
707
708 if (!arg_quiet)
709 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 return 0;
714 }
715
716 static int find_mount_points(const char *what, char ***list) {
717 _cleanup_(mnt_free_tablep) struct libmnt_table *table = NULL;
718 _cleanup_(mnt_free_iterp) struct libmnt_iter *iter = NULL;
719 _cleanup_strv_free_ char **l = NULL;
720 size_t bufsize = 0, n = 0;
721 int r;
722
723 assert(what);
724 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 r = libmount_parse(NULL, NULL, &table, &iter);
730 if (r < 0)
731 return log_error_errno(r, "Failed to parse /proc/self/mountinfo: %m");
732
733 for (;;) {
734 struct libmnt_fs *fs;
735 const char *source, *target;
736
737 r = mnt_table_next_fs(table, iter, &fs);
738 if (r == 1)
739 break;
740 if (r < 0)
741 return log_error_errno(r, "Failed to get next entry from /proc/self/mountinfo: %m");
742
743 source = mnt_fs_get_source(fs);
744 target = mnt_fs_get_target(fs);
745 if (!source || !target)
746 continue;
747
748 if (!path_equal(source, what))
749 continue;
750
751 /* one extra slot is needed for the terminating NULL */
752 if (!GREEDY_REALLOC0(l, bufsize, n + 2))
753 return log_oom();
754
755 l[n] = strdup(target);
756 if (!l[n])
757 return log_oom();
758 n++;
759 }
760
761 if (!GREEDY_REALLOC0(l, bufsize, n + 1))
762 return log_oom();
763
764 *list = TAKE_PTR(l);
765 return n;
766 }
767
768 static int find_loop_device(const char *backing_file, char **loop_dev) {
769 _cleanup_closedir_ DIR *d = NULL;
770 struct dirent *de;
771 _cleanup_free_ char *l = NULL;
772
773 assert(backing_file);
774 assert(loop_dev);
775
776 d = opendir("/sys/devices/virtual/block");
777 if (!d)
778 return -errno;
779
780 FOREACH_DIRENT(de, d, return -errno) {
781 _cleanup_free_ char *sys = NULL, *fname = NULL;
782 int r;
783
784 dirent_ensure_type(d, de);
785
786 if (de->d_type != DT_DIR)
787 continue;
788
789 if (!startswith(de->d_name, "loop"))
790 continue;
791
792 sys = strjoin("/sys/devices/virtual/block/", de->d_name, "/loop/backing_file");
793 if (!sys)
794 return -ENOMEM;
795
796 r = read_one_line_file(sys, &fname);
797 if (r < 0) {
798 log_debug_errno(r, "Failed to read %s, ignoring: %m", sys);
799 continue;
800 }
801
802 if (files_same(fname, backing_file, 0) <= 0)
803 continue;
804
805 l = strjoin("/dev/", de->d_name);
806 if (!l)
807 return -ENOMEM;
808
809 break;
810 }
811
812 if (!l)
813 return -ENXIO;
814
815 *loop_dev = TAKE_PTR(l);
816
817 return 0;
818 }
819
820 static int stop_mount(
821 sd_bus *bus,
822 const char *where,
823 const char *suffix) {
824
825 _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
826 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
827 _cleanup_(bus_wait_for_jobs_freep) BusWaitForJobs *w = NULL;
828 _cleanup_free_ char *mount_unit = NULL;
829 int r;
830
831 if (!arg_no_block) {
832 r = bus_wait_for_jobs_new(bus, &w);
833 if (r < 0)
834 return log_error_errno(r, "Could not watch jobs: %m");
835 }
836
837 r = unit_name_from_path(where, suffix, &mount_unit);
838 if (r < 0)
839 return log_error_errno(r, "Failed to make %s unit name from path %s: %m", suffix + 1, where);
840
841 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 if (r < 0)
849 return bus_log_create_error(r);
850
851 r = sd_bus_message_set_allow_interactive_authorization(m, arg_ask_password);
852 if (r < 0)
853 return bus_log_create_error(r);
854
855 /* Name and mode */
856 r = sd_bus_message_append(m, "ss", mount_unit, "fail");
857 if (r < 0)
858 return bus_log_create_error(r);
859
860 polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
861
862 r = sd_bus_call(bus, m, 0, &error, &reply);
863 if (r < 0) {
864 if (streq(suffix, ".automount") &&
865 sd_bus_error_has_name(&error, "org.freedesktop.systemd1.NoSuchUnit"))
866 return 0;
867 return log_error_errno(r, "Failed to stop %s unit: %s", suffix + 1, bus_error_message(&error, r));
868 }
869
870 if (w) {
871 const char *object;
872
873 r = sd_bus_message_read(reply, "o", &object);
874 if (r < 0)
875 return bus_log_parse_error(r);
876
877 r = bus_wait_for_jobs_one(w, object, arg_quiet);
878 if (r < 0)
879 return r;
880 }
881
882 if (!arg_quiet)
883 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 return 0;
888 }
889
890 static int stop_mounts(
891 sd_bus *bus,
892 const char *where) {
893
894 int r;
895
896 if (path_equal(where, "/"))
897 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
898 "Refusing to operate on root directory: %s", where);
899
900 if (!path_is_normalized(where))
901 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
902 "Path contains non-normalized components: %s", where);
903
904 r = stop_mount(bus, where, ".mount");
905 if (r < 0)
906 return r;
907
908 r = stop_mount(bus, where, ".automount");
909 if (r < 0)
910 return r;
911
912 return 0;
913 }
914
915 static int umount_by_device(sd_bus *bus, const char *what) {
916 _cleanup_(sd_device_unrefp) sd_device *d = NULL;
917 _cleanup_strv_free_ char **list = NULL;
918 struct stat st;
919 const char *v;
920 char **l;
921 int r, r2 = 0;
922
923 assert(what);
924
925 if (stat(what, &st) < 0)
926 return log_error_errno(errno, "Can't stat %s: %m", what);
927
928 if (!S_ISBLK(st.st_mode)) {
929 log_error("Not a block device: %s", what);
930 return -ENOTBLK;
931 }
932
933 r = sd_device_new_from_devnum(&d, 'b', st.st_rdev);
934 if (r < 0)
935 return log_error_errno(r, "Failed to get device from device number: %m");
936
937 r = sd_device_get_property_value(d, "ID_FS_USAGE", &v);
938 if (r < 0)
939 return log_device_error_errno(d, r, "Failed to get device property: %m");
940
941 if (!streq(v, "filesystem")) {
942 log_device_error(d, "%s does not contain a known file system.", what);
943 return -EINVAL;
944 }
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, false);
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);
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 = strjoin("/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 log_error("Escaped name %s is not a valid filename.", escaped);
1257 return -EINVAL;
1258 }
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);
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 log_error("Invalid file type: %s", loop_dev);
1273 return -EINVAL;
1274 }
1275
1276 r = sd_device_new_from_devnum(&d, 'b', st.st_rdev);
1277 if (r < 0)
1278 return log_error_errno(r, "Failed to get device from device number: %m");
1279
1280 if (sd_device_get_property_value(d, "ID_FS_USAGE", &v) < 0 || !streq(v, "filesystem")) {
1281 log_device_error(d, "%s does not contain a known file system.", arg_mount_what);
1282 return -EINVAL;
1283 }
1284
1285 r = acquire_mount_type(d);
1286 if (r < 0)
1287 return r;
1288
1289 r = acquire_mount_options(d);
1290 if (r < 0)
1291 return r;
1292
1293 r = acquire_mount_where_for_loop_dev(loop_dev);
1294 if (r < 0)
1295 return r;
1296
1297 r = acquire_description(d);
1298 if (r < 0)
1299 return r;
1300
1301 return 0;
1302 }
1303
1304 static int discover_device(void) {
1305 _cleanup_(sd_device_unrefp) sd_device *d = NULL;
1306 struct stat st;
1307 const char *v;
1308 int r;
1309
1310 if (stat(arg_mount_what, &st) < 0)
1311 return log_error_errno(errno, "Can't stat %s: %m", arg_mount_what);
1312
1313 if (S_ISREG(st.st_mode))
1314 return discover_loop_backing_file();
1315
1316 if (!S_ISBLK(st.st_mode)) {
1317 log_error("Invalid file type: %s", arg_mount_what);
1318 return -EINVAL;
1319 }
1320
1321 r = sd_device_new_from_devnum(&d, 'b', st.st_rdev);
1322 if (r < 0)
1323 return log_error_errno(r, "Failed to get device from device number: %m");
1324
1325 if (sd_device_get_property_value(d, "ID_FS_USAGE", &v) < 0 || !streq(v, "filesystem")) {
1326 log_error("%s does not contain a known file system.", arg_mount_what);
1327 return -EINVAL;
1328 }
1329
1330 r = acquire_mount_type(d);
1331 if (r < 0)
1332 return r;
1333
1334 r = acquire_mount_options(d);
1335 if (r < 0)
1336 return r;
1337
1338 r = acquire_mount_where(d);
1339 if (r < 0)
1340 return r;
1341
1342 r = acquire_description(d);
1343 if (r < 0)
1344 return r;
1345
1346 r = acquire_removable(d);
1347 if (r < 0)
1348 return r;
1349
1350 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 static int compare_item(const struct item *a, const struct item *b) {
1369 if (a->columns[COLUMN_NODE] == b->columns[COLUMN_NODE])
1370 return 0;
1371 if (!a->columns[COLUMN_NODE])
1372 return 1;
1373 if (!b->columns[COLUMN_NODE])
1374 return -1;
1375
1376 return path_compare(a->columns[COLUMN_NODE], b->columns[COLUMN_NODE]);
1377 }
1378
1379 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 _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL;
1392 size_t n_allocated = 0, n = 0, i;
1393 size_t column_width[_COLUMN_MAX];
1394 struct item *items = NULL;
1395 sd_device *d;
1396 unsigned c;
1397 int r;
1398
1399 for (c = 0; c < _COLUMN_MAX; c++)
1400 column_width[c] = strlen(titles[c]);
1401
1402 r = sd_device_enumerator_new(&e);
1403 if (r < 0)
1404 return log_oom();
1405
1406 r = sd_device_enumerator_add_match_subsystem(e, "block", true);
1407 if (r < 0)
1408 return log_error_errno(r, "Failed to add block match: %m");
1409
1410 r = sd_device_enumerator_add_match_property(e, "ID_FS_USAGE", "filesystem");
1411 if (r < 0)
1412 return log_error_errno(r, "Failed to add property match: %m");
1413
1414 FOREACH_DEVICE(e, d) {
1415 struct item *j;
1416
1417 if (!GREEDY_REALLOC0(items, n_allocated, n+1)) {
1418 r = log_oom();
1419 goto finish;
1420 }
1421
1422 j = items + n++;
1423
1424 for (c = 0; c < _COLUMN_MAX; c++) {
1425 const char *x = NULL;
1426 size_t k;
1427
1428 switch (c) {
1429
1430 case COLUMN_NODE:
1431 (void) sd_device_get_devname(d, &x);
1432 break;
1433
1434 case COLUMN_PATH:
1435 (void) sd_device_get_property_value(d, "ID_PATH", &x);
1436 break;
1437
1438 case COLUMN_MODEL:
1439 x = get_model(d);
1440 break;
1441
1442 case COLUMN_WWN:
1443 (void) sd_device_get_property_value(d, "ID_WWN", &x);
1444 break;
1445
1446 case COLUMN_FSTYPE:
1447 (void) sd_device_get_property_value(d, "ID_FS_TYPE", &x);
1448 break;
1449
1450 case COLUMN_LABEL:
1451 x = get_label(d);
1452 break;
1453
1454 case COLUMN_UUID:
1455 (void) sd_device_get_property_value(d, "ID_FS_UUID", &x);
1456 break;
1457 }
1458
1459 if (isempty(x))
1460 continue;
1461
1462 j->columns[c] = strdup(x);
1463 if (!j->columns[c]) {
1464 r = log_oom();
1465 goto finish;
1466 }
1467
1468 k = strlen(x);
1469 if (k > column_width[c])
1470 column_width[c] = k;
1471 }
1472 }
1473
1474 if (n == 0) {
1475 log_info("No devices found.");
1476 goto finish;
1477 }
1478
1479 typesafe_qsort(items, n, compare_item);
1480
1481 (void) pager_open(arg_pager_flags);
1482
1483 fputs(ansi_underline(), stdout);
1484 for (c = 0; c < _COLUMN_MAX; c++) {
1485 if (c > 0)
1486 fputc(' ', stdout);
1487
1488 printf("%-*s", (int) column_width[c], titles[c]);
1489 }
1490 fputs(ansi_normal(), stdout);
1491 fputc('\n', stdout);
1492
1493 for (i = 0; i < n; i++) {
1494 for (c = 0; c < _COLUMN_MAX; c++) {
1495 if (c > 0)
1496 fputc(' ', stdout);
1497
1498 printf("%-*s", (int) column_width[c], strna(items[i].columns[c]));
1499 }
1500 fputc('\n', stdout);
1501 }
1502
1503 r = 0;
1504
1505 finish:
1506 for (i = 0; i < n; i++)
1507 for (c = 0; c < _COLUMN_MAX; c++)
1508 free(items[i].columns[c]);
1509
1510 free(items);
1511 return r;
1512 }
1513
1514 static int run(int argc, char* argv[]) {
1515 _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
1516 int r;
1517
1518 log_show_color(true);
1519 log_parse_environment();
1520 log_open();
1521
1522 r = parse_argv(argc, argv);
1523 if (r <= 0)
1524 return r;
1525
1526 if (arg_action == ACTION_LIST)
1527 return list_devices();
1528
1529 r = bus_connect_transport_systemd(arg_transport, arg_host, arg_user, &bus);
1530 if (r < 0)
1531 return log_error_errno(r, "Failed to create bus connection: %m");
1532
1533 if (arg_action == ACTION_UMOUNT)
1534 return action_umount(bus, argc, argv);
1535
1536 if (!path_is_normalized(arg_mount_what)) {
1537 log_error("Path contains non-normalized components: %s", arg_mount_what);
1538 return -EINVAL;
1539 }
1540
1541 if (arg_discover) {
1542 r = discover_device();
1543 if (r < 0)
1544 return r;
1545 }
1546
1547 if (!arg_mount_where) {
1548 log_error("Can't figure out where to mount %s.", arg_mount_what);
1549 return -EINVAL;
1550 }
1551
1552 if (path_equal(arg_mount_where, "/")) {
1553 log_error("Refusing to operate on root directory.");
1554 return -EINVAL;
1555 }
1556
1557 if (!path_is_normalized(arg_mount_where)) {
1558 log_error("Path contains non-normalized components: %s", arg_mount_where);
1559 return -EINVAL;
1560 }
1561
1562 if (streq_ptr(arg_mount_type, "auto"))
1563 arg_mount_type = mfree(arg_mount_type);
1564 if (streq_ptr(arg_mount_options, "defaults"))
1565 arg_mount_options = mfree(arg_mount_options);
1566
1567 if (!is_device_path(arg_mount_what))
1568 arg_fsck = false;
1569
1570 if (arg_fsck && arg_mount_type && arg_transport == BUS_TRANSPORT_LOCAL) {
1571 r = fsck_exists(arg_mount_type);
1572 if (r < 0)
1573 log_warning_errno(r, "Couldn't determine whether fsck for %s exists, proceeding anyway.", arg_mount_type);
1574 else if (r == 0) {
1575 log_debug("Disabling file system check as fsck for %s doesn't exist.", arg_mount_type);
1576 arg_fsck = false; /* fsck doesn't exist, let's not attempt it */
1577 }
1578 }
1579
1580 /* The kernel (properly) refuses mounting file systems with unknown uid=,gid= options,
1581 * but not for all filesystem types. Let's try to catch the cases where the option
1582 * would be used if the file system does not support it. It is also possible to
1583 * autodetect the file system, but that's only possible with disk-based file systems
1584 * which incidentally seem to be implemented more carefully and reject unknown options,
1585 * so it's probably OK that we do the check only when the type is specified.
1586 */
1587 if (arg_mount_type &&
1588 !streq(arg_mount_type, "auto") &&
1589 arg_uid != UID_INVALID &&
1590 !fstype_can_uid_gid(arg_mount_type)) {
1591 log_error("File system type %s is not known to support uid=/gid=, refusing.",
1592 arg_mount_type);
1593 return -EOPNOTSUPP;
1594 }
1595
1596 switch (arg_action) {
1597
1598 case ACTION_MOUNT:
1599 case ACTION_DEFAULT:
1600 r = start_transient_mount(bus, argv + optind);
1601 break;
1602
1603 case ACTION_AUTOMOUNT:
1604 r = start_transient_automount(bus, argv + optind);
1605 break;
1606
1607 default:
1608 assert_not_reached("Unexpected action.");
1609 }
1610
1611 return r;
1612 }
1613
1614 DEFINE_MAIN_FUNCTION(run);
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