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Merge pull request #11827 from keszybz/pkgconfig-variables
[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 "device-util.h"
12 #include "dirent-util.h"
13 #include "escape.h"
14 #include "fd-util.h"
15 #include "fileio.h"
16 #include "fs-util.h"
17 #include "fstab-util.h"
18 #include "main-func.h"
19 #include "mount-util.h"
20 #include "mountpoint-util.h"
21 #include "pager.h"
22 #include "parse-util.h"
23 #include "path-util.h"
24 #include "pretty-print.h"
25 #include "spawn-polkit-agent.h"
26 #include "stat-util.h"
27 #include "strv.h"
28 #include "unit-def.h"
29 #include "unit-name.h"
30 #include "user-util.h"
31 #include "terminal-util.h"
32
33 enum {
34 ACTION_DEFAULT,
35 ACTION_MOUNT,
36 ACTION_AUTOMOUNT,
37 ACTION_UMOUNT,
38 ACTION_LIST,
39 } arg_action = ACTION_DEFAULT;
40
41 static bool arg_no_block = false;
42 static PagerFlags arg_pager_flags = 0;
43 static bool arg_ask_password = true;
44 static bool arg_quiet = false;
45 static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;
46 static bool arg_user = false;
47 static const char *arg_host = NULL;
48 static bool arg_discover = false;
49 static char *arg_mount_what = NULL;
50 static char *arg_mount_where = NULL;
51 static char *arg_mount_type = NULL;
52 static char *arg_mount_options = NULL;
53 static char *arg_description = NULL;
54 static char **arg_property = NULL;
55 static usec_t arg_timeout_idle = USEC_INFINITY;
56 static bool arg_timeout_idle_set = false;
57 static char **arg_automount_property = NULL;
58 static int arg_bind_device = -1;
59 static uid_t arg_uid = UID_INVALID;
60 static gid_t arg_gid = GID_INVALID;
61 static bool arg_fsck = true;
62 static bool arg_aggressive_gc = false;
63
64 STATIC_DESTRUCTOR_REGISTER(arg_mount_what, freep);
65 STATIC_DESTRUCTOR_REGISTER(arg_mount_where, freep);
66 STATIC_DESTRUCTOR_REGISTER(arg_mount_type, freep);
67 STATIC_DESTRUCTOR_REGISTER(arg_mount_options, freep);
68 STATIC_DESTRUCTOR_REGISTER(arg_description, freep);
69 STATIC_DESTRUCTOR_REGISTER(arg_property, strv_freep);
70 STATIC_DESTRUCTOR_REGISTER(arg_automount_property, strv_freep);
71
72 static int help(void) {
73 _cleanup_free_ char *link = NULL;
74 int r;
75
76 r = terminal_urlify_man("systemd-mount", "1", &link);
77 if (r < 0)
78 return log_oom();
79
80 printf("systemd-mount [OPTIONS...] WHAT [WHERE]\n"
81 "systemd-mount [OPTIONS...] --list\n"
82 "%s [OPTIONS...] %sWHAT|WHERE...\n\n"
83 "Establish a mount or auto-mount point transiently.\n\n"
84 " -h --help Show this help\n"
85 " --version Show package version\n"
86 " --no-block Do not wait until operation finished\n"
87 " --no-pager Do not pipe output into a pager\n"
88 " --no-ask-password Do not prompt for password\n"
89 " -q --quiet Suppress information messages during runtime\n"
90 " --user Run as user unit\n"
91 " -H --host=[USER@]HOST Operate on remote host\n"
92 " -M --machine=CONTAINER Operate on local container\n"
93 " --discover Discover mount device metadata\n"
94 " -t --type=TYPE File system type\n"
95 " -o --options=OPTIONS Mount options\n"
96 " --owner=USER Add uid= and gid= options for USER\n"
97 " --fsck=no Don't run file system check before mount\n"
98 " --description=TEXT Description for unit\n"
99 " -p --property=NAME=VALUE Set mount unit property\n"
100 " -A --automount=BOOL Create an auto-mount point\n"
101 " --timeout-idle-sec=SEC Specify automount idle timeout\n"
102 " --automount-property=NAME=VALUE\n"
103 " Set automount unit property\n"
104 " --bind-device Bind automount unit to device\n"
105 " --list List mountable block devices\n"
106 " -u --umount Unmount mount points\n"
107 " -G --collect Unload unit after it stopped, even when failed\n"
108 "\nSee the %s for details.\n"
109 , program_invocation_short_name
110 , streq(program_invocation_short_name, "systemd-umount") ? "" : "--umount "
111 , link
112 );
113
114 return 0;
115 }
116
117 static int parse_argv(int argc, char *argv[]) {
118
119 enum {
120 ARG_VERSION = 0x100,
121 ARG_NO_BLOCK,
122 ARG_NO_PAGER,
123 ARG_NO_ASK_PASSWORD,
124 ARG_USER,
125 ARG_SYSTEM,
126 ARG_DISCOVER,
127 ARG_MOUNT_TYPE,
128 ARG_MOUNT_OPTIONS,
129 ARG_OWNER,
130 ARG_FSCK,
131 ARG_DESCRIPTION,
132 ARG_TIMEOUT_IDLE,
133 ARG_AUTOMOUNT,
134 ARG_AUTOMOUNT_PROPERTY,
135 ARG_BIND_DEVICE,
136 ARG_LIST,
137 };
138
139 static const struct option options[] = {
140 { "help", no_argument, NULL, 'h' },
141 { "version", no_argument, NULL, ARG_VERSION },
142 { "no-block", no_argument, NULL, ARG_NO_BLOCK },
143 { "no-pager", no_argument, NULL, ARG_NO_PAGER },
144 { "no-ask-password", no_argument, NULL, ARG_NO_ASK_PASSWORD },
145 { "quiet", no_argument, NULL, 'q' },
146 { "user", no_argument, NULL, ARG_USER },
147 { "system", no_argument, NULL, ARG_SYSTEM },
148 { "host", required_argument, NULL, 'H' },
149 { "machine", required_argument, NULL, 'M' },
150 { "discover", no_argument, NULL, ARG_DISCOVER },
151 { "type", required_argument, NULL, 't' },
152 { "options", required_argument, NULL, 'o' },
153 { "owner", required_argument, NULL, ARG_OWNER },
154 { "fsck", required_argument, NULL, ARG_FSCK },
155 { "description", required_argument, NULL, ARG_DESCRIPTION },
156 { "property", required_argument, NULL, 'p' },
157 { "automount", required_argument, NULL, ARG_AUTOMOUNT },
158 { "timeout-idle-sec", required_argument, NULL, ARG_TIMEOUT_IDLE },
159 { "automount-property", required_argument, NULL, ARG_AUTOMOUNT_PROPERTY },
160 { "bind-device", no_argument, NULL, ARG_BIND_DEVICE },
161 { "list", no_argument, NULL, ARG_LIST },
162 { "umount", no_argument, NULL, 'u' },
163 { "unmount", no_argument, NULL, 'u' },
164 { "collect", no_argument, NULL, 'G' },
165 {},
166 };
167
168 int r, c;
169
170 assert(argc >= 0);
171 assert(argv);
172
173 if (strstr(program_invocation_short_name, "systemd-umount"))
174 arg_action = ACTION_UMOUNT;
175
176 while ((c = getopt_long(argc, argv, "hqH:M:t:o:p:AuG", options, NULL)) >= 0)
177
178 switch (c) {
179
180 case 'h':
181 return help();
182
183 case ARG_VERSION:
184 return version();
185
186 case ARG_NO_BLOCK:
187 arg_no_block = true;
188 break;
189
190 case ARG_NO_PAGER:
191 arg_pager_flags |= PAGER_DISABLE;
192 break;
193
194 case ARG_NO_ASK_PASSWORD:
195 arg_ask_password = false;
196 break;
197
198 case 'q':
199 arg_quiet = true;
200 break;
201
202 case ARG_USER:
203 arg_user = true;
204 break;
205
206 case ARG_SYSTEM:
207 arg_user = false;
208 break;
209
210 case 'H':
211 arg_transport = BUS_TRANSPORT_REMOTE;
212 arg_host = optarg;
213 break;
214
215 case 'M':
216 arg_transport = BUS_TRANSPORT_MACHINE;
217 arg_host = optarg;
218 break;
219
220 case ARG_DISCOVER:
221 arg_discover = true;
222 break;
223
224 case 't':
225 if (free_and_strdup(&arg_mount_type, optarg) < 0)
226 return log_oom();
227 break;
228
229 case 'o':
230 if (free_and_strdup(&arg_mount_options, optarg) < 0)
231 return log_oom();
232 break;
233
234 case ARG_OWNER: {
235 const char *user = optarg;
236
237 r = get_user_creds(&user, &arg_uid, &arg_gid, NULL, NULL, 0);
238 if (r < 0)
239 return log_error_errno(r,
240 r == -EBADMSG ? "UID or GID of user %s are invalid."
241 : "Cannot use \"%s\" as owner: %m",
242 optarg);
243 break;
244 }
245
246 case ARG_FSCK:
247 r = parse_boolean(optarg);
248 if (r < 0)
249 return log_error_errno(r, "Failed to parse --fsck= argument: %s", optarg);
250
251 arg_fsck = r;
252 break;
253
254 case ARG_DESCRIPTION:
255 if (free_and_strdup(&arg_description, optarg) < 0)
256 return log_oom();
257 break;
258
259 case 'p':
260 if (strv_extend(&arg_property, optarg) < 0)
261 return log_oom();
262
263 break;
264
265 case 'A':
266 arg_action = ACTION_AUTOMOUNT;
267 break;
268
269 case ARG_AUTOMOUNT:
270 r = parse_boolean(optarg);
271 if (r < 0)
272 return log_error_errno(r, "--automount= expects a valid boolean parameter: %s", optarg);
273
274 arg_action = r ? ACTION_AUTOMOUNT : ACTION_MOUNT;
275 break;
276
277 case ARG_TIMEOUT_IDLE:
278 r = parse_sec(optarg, &arg_timeout_idle);
279 if (r < 0)
280 return log_error_errno(r, "Failed to parse timeout: %s", optarg);
281
282 break;
283
284 case ARG_AUTOMOUNT_PROPERTY:
285 if (strv_extend(&arg_automount_property, optarg) < 0)
286 return log_oom();
287
288 break;
289
290 case ARG_BIND_DEVICE:
291 arg_bind_device = true;
292 break;
293
294 case ARG_LIST:
295 arg_action = ACTION_LIST;
296 break;
297
298 case 'u':
299 arg_action = ACTION_UMOUNT;
300 break;
301
302 case 'G':
303 arg_aggressive_gc = true;
304 break;
305
306 case '?':
307 return -EINVAL;
308
309 default:
310 assert_not_reached("Unhandled option");
311 }
312
313 if (arg_user && arg_transport != BUS_TRANSPORT_LOCAL)
314 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
315 "Execution in user context is not supported on non-local systems.");
316
317 if (arg_action == ACTION_LIST) {
318 if (optind < argc)
319 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
320 "Too many arguments.");
321
322 if (arg_transport != BUS_TRANSPORT_LOCAL)
323 return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
324 "Listing devices only supported locally.");
325 } else if (arg_action == ACTION_UMOUNT) {
326 if (optind >= argc)
327 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
328 "At least one argument required.");
329
330 if (arg_transport != BUS_TRANSPORT_LOCAL) {
331 int i;
332
333 for (i = optind; i < argc; i++)
334 if (!path_is_absolute(argv[i]) )
335 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
336 "Only absolute path is supported: %s", argv[i]);
337 }
338 } else {
339 if (optind >= argc)
340 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
341 "At least one argument required.");
342
343 if (argc > optind+2)
344 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
345 "At most two arguments required.");
346
347 if (arg_mount_type && (fstype_is_api_vfs(arg_mount_type) || fstype_is_network(arg_mount_type))) {
348 arg_mount_what = strdup(argv[optind]);
349 if (!arg_mount_what)
350 return log_oom();
351
352 } else if (arg_transport == BUS_TRANSPORT_LOCAL) {
353 _cleanup_free_ char *u = NULL;
354
355 u = fstab_node_to_udev_node(argv[optind]);
356 if (!u)
357 return log_oom();
358
359 r = chase_symlinks(u, NULL, 0, &arg_mount_what);
360 if (r < 0)
361 return log_error_errno(r, "Failed to make path %s absolute: %m", u);
362 } else {
363 arg_mount_what = strdup(argv[optind]);
364 if (!arg_mount_what)
365 return log_oom();
366
367 path_simplify(arg_mount_what, false);
368
369 if (!path_is_absolute(arg_mount_what))
370 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
371 "Only absolute path is supported: %s", arg_mount_what);
372 }
373
374 if (argc > optind+1) {
375 if (arg_transport == BUS_TRANSPORT_LOCAL) {
376 r = chase_symlinks(argv[optind+1], NULL, CHASE_NONEXISTENT, &arg_mount_where);
377 if (r < 0)
378 return log_error_errno(r, "Failed to make path %s absolute: %m", argv[optind+1]);
379 } else {
380 arg_mount_where = strdup(argv[optind+1]);
381 if (!arg_mount_where)
382 return log_oom();
383
384 path_simplify(arg_mount_where, false);
385
386 if (!path_is_absolute(arg_mount_where))
387 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
388 "Only absolute path is supported: %s", arg_mount_where);
389 }
390 } else
391 arg_discover = true;
392
393 if (arg_discover && arg_transport != BUS_TRANSPORT_LOCAL)
394 return log_error_errno(SYNTHETIC_ERRNO(EOPNOTSUPP),
395 "Automatic mount location discovery is only supported locally.");
396 }
397
398 return 1;
399 }
400
401 static int transient_unit_set_properties(sd_bus_message *m, UnitType t, char **properties) {
402 int r;
403
404 if (!isempty(arg_description)) {
405 r = sd_bus_message_append(m, "(sv)", "Description", "s", arg_description);
406 if (r < 0)
407 return r;
408 }
409
410 if (arg_bind_device && is_device_path(arg_mount_what)) {
411 _cleanup_free_ char *device_unit = NULL;
412
413 r = unit_name_from_path(arg_mount_what, ".device", &device_unit);
414 if (r < 0)
415 return r;
416
417 r = sd_bus_message_append(m, "(sv)(sv)",
418 "After", "as", 1, device_unit,
419 "BindsTo", "as", 1, device_unit);
420 if (r < 0)
421 return r;
422 }
423
424 if (arg_aggressive_gc) {
425 r = sd_bus_message_append(m, "(sv)", "CollectMode", "s", "inactive-or-failed");
426 if (r < 0)
427 return r;
428 }
429
430 r = bus_append_unit_property_assignment_many(m, t, properties);
431 if (r < 0)
432 return r;
433
434 return 0;
435 }
436
437 static int transient_mount_set_properties(sd_bus_message *m) {
438 _cleanup_free_ char *options = NULL;
439 int r;
440
441 assert(m);
442
443 r = transient_unit_set_properties(m, UNIT_MOUNT, arg_property);
444 if (r < 0)
445 return r;
446
447 if (arg_mount_what) {
448 r = sd_bus_message_append(m, "(sv)", "What", "s", arg_mount_what);
449 if (r < 0)
450 return r;
451 }
452
453 if (arg_mount_type) {
454 r = sd_bus_message_append(m, "(sv)", "Type", "s", arg_mount_type);
455 if (r < 0)
456 return r;
457 }
458
459 /* Prepend uid=…,gid=… if arg_uid is set */
460 if (arg_uid != UID_INVALID) {
461 r = asprintf(&options,
462 "uid=" UID_FMT ",gid=" GID_FMT "%s%s",
463 arg_uid, arg_gid,
464 arg_mount_options ? "," : "", strempty(arg_mount_options));
465 if (r < 0)
466 return -ENOMEM;
467 }
468
469 if (options || arg_mount_options) {
470 log_debug("Using mount options: %s", options ?: arg_mount_options);
471
472 r = sd_bus_message_append(m, "(sv)", "Options", "s", options ?: arg_mount_options);
473 if (r < 0)
474 return r;
475 } else
476 log_debug("Not using any mount options");
477
478 if (arg_fsck) {
479 _cleanup_free_ char *fsck = NULL;
480
481 r = unit_name_from_path_instance("systemd-fsck", arg_mount_what, ".service", &fsck);
482 if (r < 0)
483 return r;
484
485 r = sd_bus_message_append(m,
486 "(sv)(sv)",
487 "Requires", "as", 1, fsck,
488 "After", "as", 1, fsck);
489 if (r < 0)
490 return r;
491 }
492
493 return 0;
494 }
495
496 static int transient_automount_set_properties(sd_bus_message *m) {
497 int r;
498
499 assert(m);
500
501 r = transient_unit_set_properties(m, UNIT_AUTOMOUNT, arg_automount_property);
502 if (r < 0)
503 return r;
504
505 if (arg_timeout_idle != USEC_INFINITY) {
506 r = sd_bus_message_append(m, "(sv)", "TimeoutIdleUSec", "t", arg_timeout_idle);
507 if (r < 0)
508 return r;
509 }
510
511 return 0;
512 }
513
514 static int start_transient_mount(
515 sd_bus *bus,
516 char **argv) {
517
518 _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
519 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
520 _cleanup_(bus_wait_for_jobs_freep) BusWaitForJobs *w = NULL;
521 _cleanup_free_ char *mount_unit = NULL;
522 int r;
523
524 if (!arg_no_block) {
525 r = bus_wait_for_jobs_new(bus, &w);
526 if (r < 0)
527 return log_error_errno(r, "Could not watch jobs: %m");
528 }
529
530 r = unit_name_from_path(arg_mount_where, ".mount", &mount_unit);
531 if (r < 0)
532 return log_error_errno(r, "Failed to make mount unit name: %m");
533
534 r = sd_bus_message_new_method_call(
535 bus,
536 &m,
537 "org.freedesktop.systemd1",
538 "/org/freedesktop/systemd1",
539 "org.freedesktop.systemd1.Manager",
540 "StartTransientUnit");
541 if (r < 0)
542 return bus_log_create_error(r);
543
544 r = sd_bus_message_set_allow_interactive_authorization(m, arg_ask_password);
545 if (r < 0)
546 return bus_log_create_error(r);
547
548 /* Name and mode */
549 r = sd_bus_message_append(m, "ss", mount_unit, "fail");
550 if (r < 0)
551 return bus_log_create_error(r);
552
553 /* Properties */
554 r = sd_bus_message_open_container(m, 'a', "(sv)");
555 if (r < 0)
556 return bus_log_create_error(r);
557
558 r = transient_mount_set_properties(m);
559 if (r < 0)
560 return bus_log_create_error(r);
561
562 r = sd_bus_message_close_container(m);
563 if (r < 0)
564 return bus_log_create_error(r);
565
566 /* Auxiliary units */
567 r = sd_bus_message_append(m, "a(sa(sv))", 0);
568 if (r < 0)
569 return bus_log_create_error(r);
570
571 polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
572
573 r = sd_bus_call(bus, m, 0, &error, &reply);
574 if (r < 0)
575 return log_error_errno(r, "Failed to start transient mount unit: %s", bus_error_message(&error, r));
576
577 if (w) {
578 const char *object;
579
580 r = sd_bus_message_read(reply, "o", &object);
581 if (r < 0)
582 return bus_log_parse_error(r);
583
584 r = bus_wait_for_jobs_one(w, object, arg_quiet);
585 if (r < 0)
586 return r;
587 }
588
589 if (!arg_quiet)
590 log_info("Started unit %s%s%s for mount point: %s%s%s",
591 ansi_highlight(), mount_unit, ansi_normal(),
592 ansi_highlight(), arg_mount_where, ansi_normal());
593
594 return 0;
595 }
596
597 static int start_transient_automount(
598 sd_bus *bus,
599 char **argv) {
600
601 _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
602 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
603 _cleanup_(bus_wait_for_jobs_freep) BusWaitForJobs *w = NULL;
604 _cleanup_free_ char *automount_unit = NULL, *mount_unit = NULL;
605 int r;
606
607 if (!arg_no_block) {
608 r = bus_wait_for_jobs_new(bus, &w);
609 if (r < 0)
610 return log_error_errno(r, "Could not watch jobs: %m");
611 }
612
613 r = unit_name_from_path(arg_mount_where, ".automount", &automount_unit);
614 if (r < 0)
615 return log_error_errno(r, "Failed to make automount unit name: %m");
616
617 r = unit_name_from_path(arg_mount_where, ".mount", &mount_unit);
618 if (r < 0)
619 return log_error_errno(r, "Failed to make mount unit name: %m");
620
621 r = sd_bus_message_new_method_call(
622 bus,
623 &m,
624 "org.freedesktop.systemd1",
625 "/org/freedesktop/systemd1",
626 "org.freedesktop.systemd1.Manager",
627 "StartTransientUnit");
628 if (r < 0)
629 return bus_log_create_error(r);
630
631 r = sd_bus_message_set_allow_interactive_authorization(m, arg_ask_password);
632 if (r < 0)
633 return bus_log_create_error(r);
634
635 /* Name and mode */
636 r = sd_bus_message_append(m, "ss", automount_unit, "fail");
637 if (r < 0)
638 return bus_log_create_error(r);
639
640 /* Properties */
641 r = sd_bus_message_open_container(m, 'a', "(sv)");
642 if (r < 0)
643 return bus_log_create_error(r);
644
645 r = transient_automount_set_properties(m);
646 if (r < 0)
647 return bus_log_create_error(r);
648
649 r = sd_bus_message_close_container(m);
650 if (r < 0)
651 return bus_log_create_error(r);
652
653 /* Auxiliary units */
654 r = sd_bus_message_open_container(m, 'a', "(sa(sv))");
655 if (r < 0)
656 return bus_log_create_error(r);
657
658 r = sd_bus_message_open_container(m, 'r', "sa(sv)");
659 if (r < 0)
660 return bus_log_create_error(r);
661
662 r = sd_bus_message_append(m, "s", mount_unit);
663 if (r < 0)
664 return bus_log_create_error(r);
665
666 r = sd_bus_message_open_container(m, 'a', "(sv)");
667 if (r < 0)
668 return bus_log_create_error(r);
669
670 r = transient_mount_set_properties(m);
671 if (r < 0)
672 return bus_log_create_error(r);
673
674 r = sd_bus_message_close_container(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 polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
687
688 r = sd_bus_call(bus, m, 0, &error, &reply);
689 if (r < 0)
690 return log_error_errno(r, "Failed to start transient automount unit: %s", bus_error_message(&error, r));
691
692 if (w) {
693 const char *object;
694
695 r = sd_bus_message_read(reply, "o", &object);
696 if (r < 0)
697 return bus_log_parse_error(r);
698
699 r = bus_wait_for_jobs_one(w, object, arg_quiet);
700 if (r < 0)
701 return r;
702 }
703
704 if (!arg_quiet)
705 log_info("Started unit %s%s%s for mount point: %s%s%s",
706 ansi_highlight(), automount_unit, ansi_normal(),
707 ansi_highlight(), arg_mount_where, ansi_normal());
708
709 return 0;
710 }
711
712 static int find_mount_points(const char *what, char ***list) {
713 _cleanup_fclose_ FILE *proc_self_mountinfo = NULL;
714 _cleanup_strv_free_ char **l = NULL;
715 size_t bufsize = 0, n = 0;
716
717 assert(what);
718 assert(list);
719
720 /* Returns all mount points obtained from /proc/self/mountinfo in *list,
721 * and the number of mount points as return value. */
722
723 proc_self_mountinfo = fopen("/proc/self/mountinfo", "re");
724 if (!proc_self_mountinfo)
725 return log_error_errno(errno, "Can't open /proc/self/mountinfo: %m");
726
727 for (;;) {
728 _cleanup_free_ char *path = NULL, *where = NULL, *dev = NULL;
729 int r;
730
731 r = fscanf(proc_self_mountinfo,
732 "%*s " /* (1) mount id */
733 "%*s " /* (2) parent id */
734 "%*s " /* (3) major:minor */
735 "%*s " /* (4) root */
736 "%ms " /* (5) mount point */
737 "%*s" /* (6) mount options */
738 "%*[^-]" /* (7) optional fields */
739 "- " /* (8) separator */
740 "%*s " /* (9) file system type */
741 "%ms" /* (10) mount source */
742 "%*s" /* (11) mount options 2 */
743 "%*[^\n]", /* some rubbish at the end */
744 &path, &dev);
745 if (r != 2) {
746 if (r == EOF)
747 break;
748
749 continue;
750 }
751
752 if (!streq(what, dev))
753 continue;
754
755 r = cunescape(path, UNESCAPE_RELAX, &where);
756 if (r < 0)
757 continue;
758
759 /* one extra slot is needed for the terminating NULL */
760 if (!GREEDY_REALLOC(l, bufsize, n + 2))
761 return log_oom();
762
763 l[n++] = TAKE_PTR(where);
764 }
765
766 if (!GREEDY_REALLOC(l, bufsize, n + 1))
767 return log_oom();
768
769 l[n] = NULL;
770 *list = TAKE_PTR(l);
771
772 return n;
773 }
774
775 static int find_loop_device(const char *backing_file, char **loop_dev) {
776 _cleanup_closedir_ DIR *d = NULL;
777 struct dirent *de;
778 _cleanup_free_ char *l = NULL;
779
780 assert(backing_file);
781 assert(loop_dev);
782
783 d = opendir("/sys/devices/virtual/block");
784 if (!d)
785 return -errno;
786
787 FOREACH_DIRENT(de, d, return -errno) {
788 _cleanup_free_ char *sys = NULL, *fname = NULL;
789 int r;
790
791 dirent_ensure_type(d, de);
792
793 if (de->d_type != DT_DIR)
794 continue;
795
796 if (!startswith(de->d_name, "loop"))
797 continue;
798
799 sys = strjoin("/sys/devices/virtual/block/", de->d_name, "/loop/backing_file");
800 if (!sys)
801 return -ENOMEM;
802
803 r = read_one_line_file(sys, &fname);
804 if (r < 0) {
805 log_debug_errno(r, "Failed to read %s, ignoring: %m", sys);
806 continue;
807 }
808
809 if (files_same(fname, backing_file, 0) <= 0)
810 continue;
811
812 l = strjoin("/dev/", de->d_name);
813 if (!l)
814 return -ENOMEM;
815
816 break;
817 }
818
819 if (!l)
820 return -ENXIO;
821
822 *loop_dev = TAKE_PTR(l);
823
824 return 0;
825 }
826
827 static int stop_mount(
828 sd_bus *bus,
829 const char *where,
830 const char *suffix) {
831
832 _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
833 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
834 _cleanup_(bus_wait_for_jobs_freep) BusWaitForJobs *w = NULL;
835 _cleanup_free_ char *mount_unit = NULL;
836 int r;
837
838 if (!arg_no_block) {
839 r = bus_wait_for_jobs_new(bus, &w);
840 if (r < 0)
841 return log_error_errno(r, "Could not watch jobs: %m");
842 }
843
844 r = unit_name_from_path(where, suffix, &mount_unit);
845 if (r < 0)
846 return log_error_errno(r, "Failed to make %s unit name from path %s: %m", suffix + 1, where);
847
848 r = sd_bus_message_new_method_call(
849 bus,
850 &m,
851 "org.freedesktop.systemd1",
852 "/org/freedesktop/systemd1",
853 "org.freedesktop.systemd1.Manager",
854 "StopUnit");
855 if (r < 0)
856 return bus_log_create_error(r);
857
858 r = sd_bus_message_set_allow_interactive_authorization(m, arg_ask_password);
859 if (r < 0)
860 return bus_log_create_error(r);
861
862 /* Name and mode */
863 r = sd_bus_message_append(m, "ss", mount_unit, "fail");
864 if (r < 0)
865 return bus_log_create_error(r);
866
867 polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
868
869 r = sd_bus_call(bus, m, 0, &error, &reply);
870 if (r < 0) {
871 if (streq(suffix, ".automount") &&
872 sd_bus_error_has_name(&error, "org.freedesktop.systemd1.NoSuchUnit"))
873 return 0;
874 return log_error_errno(r, "Failed to stop %s unit: %s", suffix + 1, bus_error_message(&error, r));
875 }
876
877 if (w) {
878 const char *object;
879
880 r = sd_bus_message_read(reply, "o", &object);
881 if (r < 0)
882 return bus_log_parse_error(r);
883
884 r = bus_wait_for_jobs_one(w, object, arg_quiet);
885 if (r < 0)
886 return r;
887 }
888
889 if (!arg_quiet)
890 log_info("Stopped unit %s%s%s for mount point: %s%s%s",
891 ansi_highlight(), mount_unit, ansi_normal(),
892 ansi_highlight(), where, ansi_normal());
893
894 return 0;
895 }
896
897 static int stop_mounts(
898 sd_bus *bus,
899 const char *where) {
900
901 int r;
902
903 if (path_equal(where, "/"))
904 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
905 "Refusing to operate on root directory: %s", where);
906
907 if (!path_is_normalized(where))
908 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
909 "Path contains non-normalized components: %s", where);
910
911 r = stop_mount(bus, where, ".mount");
912 if (r < 0)
913 return r;
914
915 r = stop_mount(bus, where, ".automount");
916 if (r < 0)
917 return r;
918
919 return 0;
920 }
921
922 static int umount_by_device(sd_bus *bus, const char *what) {
923 _cleanup_(sd_device_unrefp) sd_device *d = NULL;
924 _cleanup_strv_free_ char **list = NULL;
925 struct stat st;
926 const char *v;
927 char **l;
928 int r, r2 = 0;
929
930 assert(what);
931
932 if (stat(what, &st) < 0)
933 return log_error_errno(errno, "Can't stat %s: %m", what);
934
935 if (!S_ISBLK(st.st_mode)) {
936 log_error("Not a block device: %s", what);
937 return -ENOTBLK;
938 }
939
940 r = sd_device_new_from_devnum(&d, 'b', st.st_rdev);
941 if (r < 0)
942 return log_error_errno(r, "Failed to get device from device number: %m");
943
944 r = sd_device_get_property_value(d, "ID_FS_USAGE", &v);
945 if (r < 0)
946 return log_device_error_errno(d, r, "Failed to get device property: %m");
947
948 if (!streq(v, "filesystem")) {
949 log_device_error(d, "%s does not contain a known file system.", what);
950 return -EINVAL;
951 }
952
953 if (sd_device_get_property_value(d, "SYSTEMD_MOUNT_WHERE", &v) >= 0)
954 r2 = stop_mounts(bus, v);
955
956 r = find_mount_points(what, &list);
957 if (r < 0)
958 return r;
959
960 for (l = list; *l; l++) {
961 r = stop_mounts(bus, *l);
962 if (r < 0)
963 r2 = r;
964 }
965
966 return r2;
967 }
968
969 static int umount_loop(sd_bus *bus, const char *backing_file) {
970 _cleanup_free_ char *loop_dev = NULL;
971 int r;
972
973 assert(backing_file);
974
975 r = find_loop_device(backing_file, &loop_dev);
976 if (r < 0)
977 return log_error_errno(r, r == -ENXIO ? "File %s is not mounted." : "Can't get loop device for %s: %m", backing_file);
978
979 return umount_by_device(bus, loop_dev);
980 }
981
982 static int action_umount(
983 sd_bus *bus,
984 int argc,
985 char **argv) {
986
987 int i, r, r2 = 0;
988
989 if (arg_transport != BUS_TRANSPORT_LOCAL) {
990 for (i = optind; i < argc; i++) {
991 _cleanup_free_ char *p = NULL;
992
993 p = strdup(argv[i]);
994 if (!p)
995 return log_oom();
996
997 path_simplify(p, false);
998
999 r = stop_mounts(bus, p);
1000 if (r < 0)
1001 r2 = r;
1002 }
1003 return r2;
1004 }
1005
1006 for (i = optind; i < argc; i++) {
1007 _cleanup_free_ char *u = NULL, *p = NULL;
1008 struct stat st;
1009
1010 u = fstab_node_to_udev_node(argv[i]);
1011 if (!u)
1012 return log_oom();
1013
1014 r = chase_symlinks(u, NULL, 0, &p);
1015 if (r < 0) {
1016 r2 = log_error_errno(r, "Failed to make path %s absolute: %m", argv[i]);
1017 continue;
1018 }
1019
1020 if (stat(p, &st) < 0)
1021 return log_error_errno(errno, "Can't stat %s (from %s): %m", p, argv[i]);
1022
1023 if (S_ISBLK(st.st_mode))
1024 r = umount_by_device(bus, p);
1025 else if (S_ISREG(st.st_mode))
1026 r = umount_loop(bus, p);
1027 else if (S_ISDIR(st.st_mode))
1028 r = stop_mounts(bus, p);
1029 else {
1030 log_error("Invalid file type: %s (from %s)", p, argv[i]);
1031 r = -EINVAL;
1032 }
1033
1034 if (r < 0)
1035 r2 = r;
1036 }
1037
1038 return r2;
1039 }
1040
1041 static int acquire_mount_type(sd_device *d) {
1042 const char *v;
1043
1044 assert(d);
1045
1046 if (arg_mount_type)
1047 return 0;
1048
1049 if (sd_device_get_property_value(d, "ID_FS_TYPE", &v) < 0)
1050 return 0;
1051
1052 arg_mount_type = strdup(v);
1053 if (!arg_mount_type)
1054 return log_oom();
1055
1056 log_debug("Discovered type=%s", arg_mount_type);
1057 return 1;
1058 }
1059
1060 static int acquire_mount_options(sd_device *d) {
1061 const char *v;
1062
1063 assert(d);
1064
1065 if (arg_mount_options)
1066 return 0;
1067
1068 if (sd_device_get_property_value(d, "SYSTEMD_MOUNT_OPTIONS", &v) < 0)
1069 return 0;
1070
1071 arg_mount_options = strdup(v);
1072 if (!arg_mount_options)
1073 return log_oom();
1074
1075 log_debug("Discovered options=%s", arg_mount_options);
1076 return 1;
1077 }
1078
1079 static const char *get_model(sd_device *d) {
1080 const char *model;
1081
1082 assert(d);
1083
1084 if (sd_device_get_property_value(d, "ID_MODEL_FROM_DATABASE", &model) >= 0)
1085 return model;
1086
1087 if (sd_device_get_property_value(d, "ID_MODEL", &model) >= 0)
1088 return model;
1089
1090 return NULL;
1091 }
1092
1093 static const char* get_label(sd_device *d) {
1094 const char *label;
1095
1096 assert(d);
1097
1098 if (sd_device_get_property_value(d, "ID_FS_LABEL", &label) >= 0)
1099 return label;
1100
1101 if (sd_device_get_property_value(d, "ID_PART_ENTRY_NAME", &label) >= 0)
1102 return label;
1103
1104 return NULL;
1105 }
1106
1107 static int acquire_mount_where(sd_device *d) {
1108 const char *v;
1109
1110 if (arg_mount_where)
1111 return 0;
1112
1113 if (sd_device_get_property_value(d, "SYSTEMD_MOUNT_WHERE", &v) < 0) {
1114 _cleanup_free_ char *escaped = NULL;
1115 const char *name;
1116
1117 name = get_label(d);
1118 if (!name)
1119 name = get_model(d);
1120 if (!name) {
1121 const char *dn;
1122
1123 if (sd_device_get_devname(d, &dn) < 0)
1124 return 0;
1125
1126 name = basename(dn);
1127 }
1128
1129 escaped = xescape(name, "\\");
1130 if (!escaped)
1131 return log_oom();
1132 if (!filename_is_valid(escaped))
1133 return 0;
1134
1135 arg_mount_where = strjoin("/run/media/system/", escaped);
1136 } else
1137 arg_mount_where = strdup(v);
1138
1139 if (!arg_mount_where)
1140 return log_oom();
1141
1142 log_debug("Discovered where=%s", arg_mount_where);
1143 return 1;
1144 }
1145
1146 static int acquire_mount_where_for_loop_dev(const char *loop_dev) {
1147 _cleanup_strv_free_ char **list = NULL;
1148 int r;
1149
1150 if (arg_mount_where)
1151 return 0;
1152
1153 r = find_mount_points(loop_dev, &list);
1154 if (r < 0)
1155 return r;
1156 else if (r == 0)
1157 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
1158 "Can't find mount point of %s. It is expected that %s is already mounted on a place.",
1159 loop_dev, loop_dev);
1160 else if (r >= 2)
1161 return log_error_errno(SYNTHETIC_ERRNO(EINVAL),
1162 "%s is mounted on %d places. It is expected that %s is mounted on a place.",
1163 loop_dev, r, loop_dev);
1164
1165 arg_mount_where = strdup(list[0]);
1166 if (!arg_mount_where)
1167 return log_oom();
1168
1169 log_debug("Discovered where=%s", arg_mount_where);
1170 return 1;
1171 }
1172
1173 static int acquire_description(sd_device *d) {
1174 const char *model, *label;
1175
1176 if (arg_description)
1177 return 0;
1178
1179 model = get_model(d);
1180
1181 label = get_label(d);
1182 if (!label)
1183 (void) sd_device_get_property_value(d, "ID_PART_ENTRY_NUMBER", &label);
1184
1185 if (model && label)
1186 arg_description = strjoin(model, " ", label);
1187 else if (label)
1188 arg_description = strdup(label);
1189 else if (model)
1190 arg_description = strdup(model);
1191 else
1192 return 0;
1193
1194 if (!arg_description)
1195 return log_oom();
1196
1197 log_debug("Discovered description=%s", arg_description);
1198 return 1;
1199 }
1200
1201 static int acquire_removable(sd_device *d) {
1202 const char *v;
1203
1204 /* Shortcut this if there's no reason to check it */
1205 if (arg_action != ACTION_DEFAULT && arg_timeout_idle_set && arg_bind_device >= 0)
1206 return 0;
1207
1208 for (;;) {
1209 if (sd_device_get_sysattr_value(d, "removable", &v) > 0)
1210 break;
1211
1212 if (sd_device_get_parent(d, &d) < 0)
1213 return 0;
1214
1215 if (sd_device_get_subsystem(d, &v) < 0 || !streq(v, "block"))
1216 return 0;
1217 }
1218
1219 if (parse_boolean(v) <= 0)
1220 return 0;
1221
1222 log_debug("Discovered removable device.");
1223
1224 if (arg_action == ACTION_DEFAULT) {
1225 log_debug("Automatically turning on automount.");
1226 arg_action = ACTION_AUTOMOUNT;
1227 }
1228
1229 if (!arg_timeout_idle_set) {
1230 log_debug("Setting idle timeout to 1s.");
1231 arg_timeout_idle = USEC_PER_SEC;
1232 }
1233
1234 if (arg_bind_device < 0) {
1235 log_debug("Binding automount unit to device.");
1236 arg_bind_device = true;
1237 }
1238
1239 return 1;
1240 }
1241
1242 static int discover_loop_backing_file(void) {
1243 _cleanup_(sd_device_unrefp) sd_device *d = NULL;
1244 _cleanup_free_ char *loop_dev = NULL;
1245 struct stat st;
1246 const char *v;
1247 int r;
1248
1249 r = find_loop_device(arg_mount_what, &loop_dev);
1250 if (r < 0 && r != -ENXIO)
1251 return log_error_errno(errno, "Can't get loop device for %s: %m", arg_mount_what);
1252
1253 if (r == -ENXIO) {
1254 _cleanup_free_ char *escaped = NULL;
1255
1256 if (arg_mount_where)
1257 return 0;
1258
1259 escaped = xescape(basename(arg_mount_what), "\\");
1260 if (!escaped)
1261 return log_oom();
1262 if (!filename_is_valid(escaped)) {
1263 log_error("Escaped name %s is not a valid filename.", escaped);
1264 return -EINVAL;
1265 }
1266
1267 arg_mount_where = strjoin("/run/media/system/", escaped);
1268 if (!arg_mount_where)
1269 return log_oom();
1270
1271 log_debug("Discovered where=%s", arg_mount_where);
1272 return 0;
1273 }
1274
1275 if (stat(loop_dev, &st) < 0)
1276 return log_error_errno(errno, "Can't stat %s: %m", loop_dev);
1277
1278 if (!S_ISBLK(st.st_mode)) {
1279 log_error("Invalid file type: %s", loop_dev);
1280 return -EINVAL;
1281 }
1282
1283 r = sd_device_new_from_devnum(&d, 'b', st.st_rdev);
1284 if (r < 0)
1285 return log_error_errno(r, "Failed to get device from device number: %m");
1286
1287 if (sd_device_get_property_value(d, "ID_FS_USAGE", &v) < 0 || !streq(v, "filesystem")) {
1288 log_device_error(d, "%s does not contain a known file system.", arg_mount_what);
1289 return -EINVAL;
1290 }
1291
1292 r = acquire_mount_type(d);
1293 if (r < 0)
1294 return r;
1295
1296 r = acquire_mount_options(d);
1297 if (r < 0)
1298 return r;
1299
1300 r = acquire_mount_where_for_loop_dev(loop_dev);
1301 if (r < 0)
1302 return r;
1303
1304 r = acquire_description(d);
1305 if (r < 0)
1306 return r;
1307
1308 return 0;
1309 }
1310
1311 static int discover_device(void) {
1312 _cleanup_(sd_device_unrefp) sd_device *d = NULL;
1313 struct stat st;
1314 const char *v;
1315 int r;
1316
1317 if (stat(arg_mount_what, &st) < 0)
1318 return log_error_errno(errno, "Can't stat %s: %m", arg_mount_what);
1319
1320 if (S_ISREG(st.st_mode))
1321 return discover_loop_backing_file();
1322
1323 if (!S_ISBLK(st.st_mode)) {
1324 log_error("Invalid file type: %s", arg_mount_what);
1325 return -EINVAL;
1326 }
1327
1328 r = sd_device_new_from_devnum(&d, 'b', st.st_rdev);
1329 if (r < 0)
1330 return log_error_errno(r, "Failed to get device from device number: %m");
1331
1332 if (sd_device_get_property_value(d, "ID_FS_USAGE", &v) < 0 || !streq(v, "filesystem")) {
1333 log_error("%s does not contain a known file system.", arg_mount_what);
1334 return -EINVAL;
1335 }
1336
1337 r = acquire_mount_type(d);
1338 if (r < 0)
1339 return r;
1340
1341 r = acquire_mount_options(d);
1342 if (r < 0)
1343 return r;
1344
1345 r = acquire_mount_where(d);
1346 if (r < 0)
1347 return r;
1348
1349 r = acquire_description(d);
1350 if (r < 0)
1351 return r;
1352
1353 r = acquire_removable(d);
1354 if (r < 0)
1355 return r;
1356
1357 return 0;
1358 }
1359
1360 enum {
1361 COLUMN_NODE,
1362 COLUMN_PATH,
1363 COLUMN_MODEL,
1364 COLUMN_WWN,
1365 COLUMN_FSTYPE,
1366 COLUMN_LABEL,
1367 COLUMN_UUID,
1368 _COLUMN_MAX,
1369 };
1370
1371 struct item {
1372 char* columns[_COLUMN_MAX];
1373 };
1374
1375 static int compare_item(const struct item *a, const struct item *b) {
1376 if (a->columns[COLUMN_NODE] == b->columns[COLUMN_NODE])
1377 return 0;
1378 if (!a->columns[COLUMN_NODE])
1379 return 1;
1380 if (!b->columns[COLUMN_NODE])
1381 return -1;
1382
1383 return path_compare(a->columns[COLUMN_NODE], b->columns[COLUMN_NODE]);
1384 }
1385
1386 static int list_devices(void) {
1387
1388 static const char * const titles[_COLUMN_MAX] = {
1389 [COLUMN_NODE] = "NODE",
1390 [COLUMN_PATH] = "PATH",
1391 [COLUMN_MODEL] = "MODEL",
1392 [COLUMN_WWN] = "WWN",
1393 [COLUMN_FSTYPE] = "TYPE",
1394 [COLUMN_LABEL] = "LABEL",
1395 [COLUMN_UUID] = "UUID"
1396 };
1397
1398 _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL;
1399 size_t n_allocated = 0, n = 0, i;
1400 size_t column_width[_COLUMN_MAX];
1401 struct item *items = NULL;
1402 sd_device *d;
1403 unsigned c;
1404 int r;
1405
1406 for (c = 0; c < _COLUMN_MAX; c++)
1407 column_width[c] = strlen(titles[c]);
1408
1409 r = sd_device_enumerator_new(&e);
1410 if (r < 0)
1411 return log_oom();
1412
1413 r = sd_device_enumerator_add_match_subsystem(e, "block", true);
1414 if (r < 0)
1415 return log_error_errno(r, "Failed to add block match: %m");
1416
1417 r = sd_device_enumerator_add_match_property(e, "ID_FS_USAGE", "filesystem");
1418 if (r < 0)
1419 return log_error_errno(r, "Failed to add property match: %m");
1420
1421 FOREACH_DEVICE(e, d) {
1422 struct item *j;
1423
1424 if (!GREEDY_REALLOC0(items, n_allocated, n+1)) {
1425 r = log_oom();
1426 goto finish;
1427 }
1428
1429 j = items + n++;
1430
1431 for (c = 0; c < _COLUMN_MAX; c++) {
1432 const char *x = NULL;
1433 size_t k;
1434
1435 switch (c) {
1436
1437 case COLUMN_NODE:
1438 (void) sd_device_get_devname(d, &x);
1439 break;
1440
1441 case COLUMN_PATH:
1442 (void) sd_device_get_property_value(d, "ID_PATH", &x);
1443 break;
1444
1445 case COLUMN_MODEL:
1446 x = get_model(d);
1447 break;
1448
1449 case COLUMN_WWN:
1450 (void) sd_device_get_property_value(d, "ID_WWN", &x);
1451 break;
1452
1453 case COLUMN_FSTYPE:
1454 (void) sd_device_get_property_value(d, "ID_FS_TYPE", &x);
1455 break;
1456
1457 case COLUMN_LABEL:
1458 x = get_label(d);
1459 break;
1460
1461 case COLUMN_UUID:
1462 (void) sd_device_get_property_value(d, "ID_FS_UUID", &x);
1463 break;
1464 }
1465
1466 if (isempty(x))
1467 continue;
1468
1469 j->columns[c] = strdup(x);
1470 if (!j->columns[c]) {
1471 r = log_oom();
1472 goto finish;
1473 }
1474
1475 k = strlen(x);
1476 if (k > column_width[c])
1477 column_width[c] = k;
1478 }
1479 }
1480
1481 if (n == 0) {
1482 log_info("No devices found.");
1483 goto finish;
1484 }
1485
1486 typesafe_qsort(items, n, compare_item);
1487
1488 (void) pager_open(arg_pager_flags);
1489
1490 fputs(ansi_underline(), stdout);
1491 for (c = 0; c < _COLUMN_MAX; c++) {
1492 if (c > 0)
1493 fputc(' ', stdout);
1494
1495 printf("%-*s", (int) column_width[c], titles[c]);
1496 }
1497 fputs(ansi_normal(), stdout);
1498 fputc('\n', stdout);
1499
1500 for (i = 0; i < n; i++) {
1501 for (c = 0; c < _COLUMN_MAX; c++) {
1502 if (c > 0)
1503 fputc(' ', stdout);
1504
1505 printf("%-*s", (int) column_width[c], strna(items[i].columns[c]));
1506 }
1507 fputc('\n', stdout);
1508 }
1509
1510 r = 0;
1511
1512 finish:
1513 for (i = 0; i < n; i++)
1514 for (c = 0; c < _COLUMN_MAX; c++)
1515 free(items[i].columns[c]);
1516
1517 free(items);
1518 return r;
1519 }
1520
1521 static int run(int argc, char* argv[]) {
1522 _cleanup_(sd_bus_flush_close_unrefp) sd_bus *bus = NULL;
1523 int r;
1524
1525 log_parse_environment();
1526 log_open();
1527
1528 r = parse_argv(argc, argv);
1529 if (r <= 0)
1530 return r;
1531
1532 if (arg_action == ACTION_LIST)
1533 return list_devices();
1534
1535 r = bus_connect_transport_systemd(arg_transport, arg_host, arg_user, &bus);
1536 if (r < 0)
1537 return log_error_errno(r, "Failed to create bus connection: %m");
1538
1539 if (arg_action == ACTION_UMOUNT)
1540 return action_umount(bus, argc, argv);
1541
1542 if (!path_is_normalized(arg_mount_what)) {
1543 log_error("Path contains non-normalized components: %s", arg_mount_what);
1544 return -EINVAL;
1545 }
1546
1547 if (arg_discover) {
1548 r = discover_device();
1549 if (r < 0)
1550 return r;
1551 }
1552
1553 if (!arg_mount_where) {
1554 log_error("Can't figure out where to mount %s.", arg_mount_what);
1555 return -EINVAL;
1556 }
1557
1558 if (path_equal(arg_mount_where, "/")) {
1559 log_error("Refusing to operate on root directory.");
1560 return -EINVAL;
1561 }
1562
1563 if (!path_is_normalized(arg_mount_where)) {
1564 log_error("Path contains non-normalized components: %s", arg_mount_where);
1565 return -EINVAL;
1566 }
1567
1568 if (streq_ptr(arg_mount_type, "auto"))
1569 arg_mount_type = mfree(arg_mount_type);
1570 if (streq_ptr(arg_mount_options, "defaults"))
1571 arg_mount_options = mfree(arg_mount_options);
1572
1573 if (!is_device_path(arg_mount_what))
1574 arg_fsck = false;
1575
1576 if (arg_fsck && arg_mount_type && arg_transport == BUS_TRANSPORT_LOCAL) {
1577 r = fsck_exists(arg_mount_type);
1578 if (r < 0)
1579 log_warning_errno(r, "Couldn't determine whether fsck for %s exists, proceeding anyway.", arg_mount_type);
1580 else if (r == 0) {
1581 log_debug("Disabling file system check as fsck for %s doesn't exist.", arg_mount_type);
1582 arg_fsck = false; /* fsck doesn't exist, let's not attempt it */
1583 }
1584 }
1585
1586 /* The kernel (properly) refuses mounting file systems with unknown uid=,gid= options,
1587 * but not for all filesystem types. Let's try to catch the cases where the option
1588 * would be used if the file system does not support it. It is also possible to
1589 * autodetect the file system, but that's only possible with disk-based file systems
1590 * which incidentally seem to be implemented more carefully and reject unknown options,
1591 * so it's probably OK that we do the check only when the type is specified.
1592 */
1593 if (arg_mount_type &&
1594 !streq(arg_mount_type, "auto") &&
1595 arg_uid != UID_INVALID &&
1596 !fstype_can_uid_gid(arg_mount_type)) {
1597 log_error("File system type %s is not known to support uid=/gid=, refusing.",
1598 arg_mount_type);
1599 return -EOPNOTSUPP;
1600 }
1601
1602 switch (arg_action) {
1603
1604 case ACTION_MOUNT:
1605 case ACTION_DEFAULT:
1606 r = start_transient_mount(bus, argv + optind);
1607 break;
1608
1609 case ACTION_AUTOMOUNT:
1610 r = start_transient_automount(bus, argv + optind);
1611 break;
1612
1613 default:
1614 assert_not_reached("Unexpected action.");
1615 }
1616
1617 return r;
1618 }
1619
1620 DEFINE_MAIN_FUNCTION(run);
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