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mount: Remove double include of "mount.h"
[thirdparty/systemd.git] / src / mount.c
1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
2
3 /***
4 This file is part of systemd.
5
6 Copyright 2010 Lennart Poettering
7
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
12
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
20 ***/
21
22 #include <errno.h>
23 #include <stdio.h>
24 #include <mntent.h>
25 #include <sys/epoll.h>
26 #include <signal.h>
27
28 #include "unit.h"
29 #include "mount.h"
30 #include "load-fragment.h"
31 #include "load-dropin.h"
32 #include "log.h"
33 #include "strv.h"
34 #include "mount-setup.h"
35 #include "unit-name.h"
36 #include "dbus-mount.h"
37 #include "special.h"
38
39 static const UnitActiveState state_translation_table[_MOUNT_STATE_MAX] = {
40 [MOUNT_DEAD] = UNIT_INACTIVE,
41 [MOUNT_MOUNTING] = UNIT_ACTIVATING,
42 [MOUNT_MOUNTING_DONE] = UNIT_ACTIVE,
43 [MOUNT_MOUNTED] = UNIT_ACTIVE,
44 [MOUNT_REMOUNTING] = UNIT_RELOADING,
45 [MOUNT_UNMOUNTING] = UNIT_DEACTIVATING,
46 [MOUNT_MOUNTING_SIGTERM] = UNIT_DEACTIVATING,
47 [MOUNT_MOUNTING_SIGKILL] = UNIT_DEACTIVATING,
48 [MOUNT_REMOUNTING_SIGTERM] = UNIT_RELOADING,
49 [MOUNT_REMOUNTING_SIGKILL] = UNIT_RELOADING,
50 [MOUNT_UNMOUNTING_SIGTERM] = UNIT_DEACTIVATING,
51 [MOUNT_UNMOUNTING_SIGKILL] = UNIT_DEACTIVATING,
52 [MOUNT_FAILED] = UNIT_FAILED
53 };
54
55 static void mount_init(Unit *u) {
56 Mount *m = MOUNT(u);
57
58 assert(u);
59 assert(u->meta.load_state == UNIT_STUB);
60
61 m->timeout_usec = DEFAULT_TIMEOUT_USEC;
62 m->directory_mode = 0755;
63
64 exec_context_init(&m->exec_context);
65
66 /* We need to make sure that /bin/mount is always called in
67 * the same process group as us, so that the autofs kernel
68 * side doesn't send us another mount request while we are
69 * already trying to comply its last one. */
70 m->exec_context.same_pgrp = true;
71
72 m->timer_watch.type = WATCH_INVALID;
73
74 m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
75 }
76
77 static void mount_unwatch_control_pid(Mount *m) {
78 assert(m);
79
80 if (m->control_pid <= 0)
81 return;
82
83 unit_unwatch_pid(UNIT(m), m->control_pid);
84 m->control_pid = 0;
85 }
86
87 static void mount_parameters_done(MountParameters *p) {
88 assert(p);
89
90 free(p->what);
91 free(p->options);
92 free(p->fstype);
93
94 p->what = p->options = p->fstype = NULL;
95 }
96
97 static void mount_done(Unit *u) {
98 Mount *m = MOUNT(u);
99
100 assert(m);
101
102 free(m->where);
103 m->where = NULL;
104
105 mount_parameters_done(&m->parameters_etc_fstab);
106 mount_parameters_done(&m->parameters_proc_self_mountinfo);
107 mount_parameters_done(&m->parameters_fragment);
108
109 exec_context_done(&m->exec_context);
110 exec_command_done_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX);
111 m->control_command = NULL;
112
113 mount_unwatch_control_pid(m);
114
115 unit_unwatch_timer(u, &m->timer_watch);
116 }
117
118 static int mount_add_mount_links(Mount *m) {
119 Meta *other;
120 int r;
121
122 assert(m);
123
124 /* Adds in links to other mount points that might lie below or
125 * above us in the hierarchy */
126
127 LIST_FOREACH(units_per_type, other, m->meta.manager->units_per_type[UNIT_MOUNT]) {
128 Mount *n = (Mount*) other;
129
130 if (n == m)
131 continue;
132
133 if (n->meta.load_state != UNIT_LOADED)
134 continue;
135
136 if (path_startswith(m->where, n->where)) {
137
138 if ((r = unit_add_dependency(UNIT(m), UNIT_AFTER, UNIT(n), true)) < 0)
139 return r;
140
141 if (n->from_etc_fstab || n->from_fragment)
142 if ((r = unit_add_dependency(UNIT(m), UNIT_REQUIRES, UNIT(n), true)) < 0)
143 return r;
144
145 } else if (path_startswith(n->where, m->where)) {
146
147 if ((r = unit_add_dependency(UNIT(m), UNIT_BEFORE, UNIT(n), true)) < 0)
148 return r;
149
150 if (m->from_etc_fstab || m->from_fragment)
151 if ((r = unit_add_dependency(UNIT(n), UNIT_REQUIRES, UNIT(m), true)) < 0)
152 return r;
153 }
154 }
155
156 return 0;
157 }
158
159 static int mount_add_swap_links(Mount *m) {
160 Meta *other;
161 int r;
162
163 assert(m);
164
165 LIST_FOREACH(units_per_type, other, m->meta.manager->units_per_type[UNIT_SWAP])
166 if ((r = swap_add_one_mount_link((Swap*) other, m)) < 0)
167 return r;
168
169 return 0;
170 }
171
172 static int mount_add_path_links(Mount *m) {
173 Meta *other;
174 int r;
175
176 assert(m);
177
178 LIST_FOREACH(units_per_type, other, m->meta.manager->units_per_type[UNIT_PATH])
179 if ((r = path_add_one_mount_link((Path*) other, m)) < 0)
180 return r;
181
182 return 0;
183 }
184
185 static int mount_add_automount_links(Mount *m) {
186 Meta *other;
187 int r;
188
189 assert(m);
190
191 LIST_FOREACH(units_per_type, other, m->meta.manager->units_per_type[UNIT_AUTOMOUNT])
192 if ((r = automount_add_one_mount_link((Automount*) other, m)) < 0)
193 return r;
194
195 return 0;
196 }
197
198 static int mount_add_socket_links(Mount *m) {
199 Meta *other;
200 int r;
201
202 assert(m);
203
204 LIST_FOREACH(units_per_type, other, m->meta.manager->units_per_type[UNIT_SOCKET])
205 if ((r = socket_add_one_mount_link((Socket*) other, m)) < 0)
206 return r;
207
208 return 0;
209 }
210
211 static char* mount_test_option(const char *haystack, const char *needle) {
212 struct mntent me;
213
214 assert(needle);
215
216 /* Like glibc's hasmntopt(), but works on a string, not a
217 * struct mntent */
218
219 if (!haystack)
220 return false;
221
222 zero(me);
223 me.mnt_opts = (char*) haystack;
224
225 return hasmntopt(&me, needle);
226 }
227
228 static int mount_add_target_links(Mount *m) {
229 const char *target;
230 MountParameters *p;
231 Unit *tu;
232 int r;
233 bool noauto, handle, automount, user;
234
235 assert(m);
236
237 if (m->from_fragment)
238 p = &m->parameters_fragment;
239 else if (m->from_etc_fstab)
240 p = &m->parameters_etc_fstab;
241 else
242 return 0;
243
244 noauto = !!mount_test_option(p->options, MNTOPT_NOAUTO);
245 user = mount_test_option(p->options, "user") || mount_test_option(p->options, "users");
246 handle = !!mount_test_option(p->options, "comment=systemd.mount") ||
247 m->meta.manager->mount_auto;
248 automount = !!mount_test_option(p->options, "comment=systemd.automount");
249
250 if (mount_test_option(p->options, "_netdev") ||
251 fstype_is_network(p->fstype))
252 target = SPECIAL_REMOTE_FS_TARGET;
253 else
254 target = SPECIAL_LOCAL_FS_TARGET;
255
256 if ((r = manager_load_unit(m->meta.manager, target, NULL, NULL, &tu)) < 0)
257 return r;
258
259 if (automount && m->meta.manager->running_as == MANAGER_SYSTEM) {
260 Unit *am;
261
262 if ((r = unit_load_related_unit(UNIT(m), ".automount", &am)) < 0)
263 return r;
264
265 return unit_add_two_dependencies(tu, UNIT_AFTER, UNIT_WANTS, UNIT(am), true);
266 } else {
267
268 /* Automatically add mount points that aren't natively
269 * configured to local-fs.target */
270 if (!noauto &&
271 handle &&
272 !m->from_fragment)
273 if (user || m->meta.manager->running_as == MANAGER_SYSTEM)
274 if ((r = unit_add_dependency(tu, UNIT_WANTS, UNIT(m), true)) < 0)
275 return r;
276
277 return unit_add_dependency(UNIT(m), UNIT_BEFORE, tu, true);
278 }
279 }
280
281 static int mount_add_device_links(Mount *m) {
282 MountParameters *p;
283 bool nofail, noauto;
284
285 assert(m);
286
287 if (m->from_fragment)
288 p = &m->parameters_fragment;
289 else if (m->from_etc_fstab)
290 p = &m->parameters_etc_fstab;
291 else
292 return 0;
293
294 if (!p->what || path_equal(m->where, "/"))
295 return 0;
296
297 noauto = !!mount_test_option(p->options, MNTOPT_NOAUTO);
298 nofail = !!mount_test_option(p->options, "nofail");
299
300 return unit_add_node_link(UNIT(m), p->what,
301 !noauto && nofail &&
302 UNIT(m)->meta.manager->running_as == MANAGER_SYSTEM);
303 }
304
305 static int mount_add_default_dependencies(Mount *m) {
306 int r;
307
308 assert(m);
309
310 if (m->meta.manager->running_as == MANAGER_SYSTEM &&
311 !path_equal(m->where, "/")) {
312
313 if ((r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, SPECIAL_FSCK_TARGET, NULL, true)) < 0)
314 return r;
315
316 if ((r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_CONFLICTED_BY, SPECIAL_UMOUNT_TARGET, NULL, true)) < 0)
317 return r;
318 }
319
320 return 0;
321 }
322
323 static int mount_verify(Mount *m) {
324 bool b;
325 char *e;
326 assert(m);
327
328 if (m->meta.load_state != UNIT_LOADED)
329 return 0;
330
331 if (!m->from_etc_fstab && !m->from_fragment && !m->from_proc_self_mountinfo)
332 return -ENOENT;
333
334 if (!(e = unit_name_from_path(m->where, ".mount")))
335 return -ENOMEM;
336
337 b = unit_has_name(UNIT(m), e);
338 free(e);
339
340 if (!b) {
341 log_error("%s's Where setting doesn't match unit name. Refusing.", m->meta.id);
342 return -EINVAL;
343 }
344
345 if (m->meta.fragment_path && !m->parameters_fragment.what) {
346 log_error("%s's What setting is missing. Refusing.", m->meta.id);
347 return -EBADMSG;
348 }
349
350 if (m->exec_context.pam_name && m->exec_context.kill_mode != KILL_CONTROL_GROUP) {
351 log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", m->meta.id);
352 return -EINVAL;
353 }
354
355 return 0;
356 }
357
358 static int mount_load(Unit *u) {
359 Mount *m = MOUNT(u);
360 int r;
361
362 assert(u);
363 assert(u->meta.load_state == UNIT_STUB);
364
365 if ((r = unit_load_fragment_and_dropin_optional(u)) < 0)
366 return r;
367
368 /* This is a new unit? Then let's add in some extras */
369 if (u->meta.load_state == UNIT_LOADED) {
370 const char *what = NULL;
371
372 if (m->meta.fragment_path)
373 m->from_fragment = true;
374
375 if (!m->where)
376 if (!(m->where = unit_name_to_path(u->meta.id)))
377 return -ENOMEM;
378
379 path_kill_slashes(m->where);
380
381 if (!m->meta.description)
382 if ((r = unit_set_description(u, m->where)) < 0)
383 return r;
384
385 if (m->from_fragment && m->parameters_fragment.what)
386 what = m->parameters_fragment.what;
387 else if (m->from_etc_fstab && m->parameters_etc_fstab.what)
388 what = m->parameters_etc_fstab.what;
389 else if (m->from_proc_self_mountinfo && m->parameters_proc_self_mountinfo.what)
390 what = m->parameters_proc_self_mountinfo.what;
391
392 if ((r = mount_add_device_links(m)) < 0)
393 return r;
394
395 if ((r = mount_add_mount_links(m)) < 0)
396 return r;
397
398 if ((r = mount_add_socket_links(m)) < 0)
399 return r;
400
401 if ((r = mount_add_swap_links(m)) < 0)
402 return r;
403
404 if ((r = mount_add_path_links(m)) < 0)
405 return r;
406
407 if ((r = mount_add_automount_links(m)) < 0)
408 return r;
409
410 if ((r = mount_add_target_links(m)) < 0)
411 return r;
412
413 if ((r = unit_add_default_cgroup(u)) < 0)
414 return r;
415
416 if (m->meta.default_dependencies)
417 if ((r = mount_add_default_dependencies(m)) < 0)
418 return r;
419 }
420
421 return mount_verify(m);
422 }
423
424 static int mount_notify_automount(Mount *m, int status) {
425 Unit *p;
426 int r;
427
428 assert(m);
429
430 if ((r = unit_get_related_unit(UNIT(m), ".automount", &p)) < 0)
431 return r == -ENOENT ? 0 : r;
432
433 return automount_send_ready(AUTOMOUNT(p), status);
434 }
435
436 static void mount_set_state(Mount *m, MountState state) {
437 MountState old_state;
438 assert(m);
439
440 old_state = m->state;
441 m->state = state;
442
443 if (state != MOUNT_MOUNTING &&
444 state != MOUNT_MOUNTING_DONE &&
445 state != MOUNT_REMOUNTING &&
446 state != MOUNT_UNMOUNTING &&
447 state != MOUNT_MOUNTING_SIGTERM &&
448 state != MOUNT_MOUNTING_SIGKILL &&
449 state != MOUNT_UNMOUNTING_SIGTERM &&
450 state != MOUNT_UNMOUNTING_SIGKILL &&
451 state != MOUNT_REMOUNTING_SIGTERM &&
452 state != MOUNT_REMOUNTING_SIGKILL) {
453 unit_unwatch_timer(UNIT(m), &m->timer_watch);
454 mount_unwatch_control_pid(m);
455 m->control_command = NULL;
456 m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
457 }
458
459 if (state == MOUNT_MOUNTED ||
460 state == MOUNT_REMOUNTING)
461 mount_notify_automount(m, 0);
462 else if (state == MOUNT_DEAD ||
463 state == MOUNT_UNMOUNTING ||
464 state == MOUNT_MOUNTING_SIGTERM ||
465 state == MOUNT_MOUNTING_SIGKILL ||
466 state == MOUNT_REMOUNTING_SIGTERM ||
467 state == MOUNT_REMOUNTING_SIGKILL ||
468 state == MOUNT_UNMOUNTING_SIGTERM ||
469 state == MOUNT_UNMOUNTING_SIGKILL ||
470 state == MOUNT_FAILED)
471 mount_notify_automount(m, -ENODEV);
472
473 if (state != old_state)
474 log_debug("%s changed %s -> %s",
475 m->meta.id,
476 mount_state_to_string(old_state),
477 mount_state_to_string(state));
478
479 unit_notify(UNIT(m), state_translation_table[old_state], state_translation_table[state]);
480 }
481
482 static int mount_coldplug(Unit *u) {
483 Mount *m = MOUNT(u);
484 MountState new_state = MOUNT_DEAD;
485 int r;
486
487 assert(m);
488 assert(m->state == MOUNT_DEAD);
489
490 if (m->deserialized_state != m->state)
491 new_state = m->deserialized_state;
492 else if (m->from_proc_self_mountinfo)
493 new_state = MOUNT_MOUNTED;
494
495 if (new_state != m->state) {
496
497 if (new_state == MOUNT_MOUNTING ||
498 new_state == MOUNT_MOUNTING_DONE ||
499 new_state == MOUNT_REMOUNTING ||
500 new_state == MOUNT_UNMOUNTING ||
501 new_state == MOUNT_MOUNTING_SIGTERM ||
502 new_state == MOUNT_MOUNTING_SIGKILL ||
503 new_state == MOUNT_UNMOUNTING_SIGTERM ||
504 new_state == MOUNT_UNMOUNTING_SIGKILL ||
505 new_state == MOUNT_REMOUNTING_SIGTERM ||
506 new_state == MOUNT_REMOUNTING_SIGKILL) {
507
508 if (m->control_pid <= 0)
509 return -EBADMSG;
510
511 if ((r = unit_watch_pid(UNIT(m), m->control_pid)) < 0)
512 return r;
513
514 if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
515 return r;
516 }
517
518 mount_set_state(m, new_state);
519 }
520
521 return 0;
522 }
523
524 static void mount_dump(Unit *u, FILE *f, const char *prefix) {
525 Mount *m = MOUNT(u);
526 MountParameters *p;
527
528 assert(m);
529 assert(f);
530
531 if (m->from_proc_self_mountinfo)
532 p = &m->parameters_proc_self_mountinfo;
533 else if (m->from_fragment)
534 p = &m->parameters_fragment;
535 else
536 p = &m->parameters_etc_fstab;
537
538 fprintf(f,
539 "%sMount State: %s\n"
540 "%sWhere: %s\n"
541 "%sWhat: %s\n"
542 "%sFile System Type: %s\n"
543 "%sOptions: %s\n"
544 "%sFrom /etc/fstab: %s\n"
545 "%sFrom /proc/self/mountinfo: %s\n"
546 "%sFrom fragment: %s\n"
547 "%sDirectoryMode: %04o\n",
548 prefix, mount_state_to_string(m->state),
549 prefix, m->where,
550 prefix, strna(p->what),
551 prefix, strna(p->fstype),
552 prefix, strna(p->options),
553 prefix, yes_no(m->from_etc_fstab),
554 prefix, yes_no(m->from_proc_self_mountinfo),
555 prefix, yes_no(m->from_fragment),
556 prefix, m->directory_mode);
557
558 if (m->control_pid > 0)
559 fprintf(f,
560 "%sControl PID: %lu\n",
561 prefix, (unsigned long) m->control_pid);
562
563 exec_context_dump(&m->exec_context, f, prefix);
564 }
565
566 static int mount_spawn(Mount *m, ExecCommand *c, pid_t *_pid) {
567 pid_t pid;
568 int r;
569
570 assert(m);
571 assert(c);
572 assert(_pid);
573
574 if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
575 goto fail;
576
577 if ((r = exec_spawn(c,
578 NULL,
579 &m->exec_context,
580 NULL, 0,
581 m->meta.manager->environment,
582 true,
583 true,
584 true,
585 m->meta.manager->confirm_spawn,
586 m->meta.cgroup_bondings,
587 &pid)) < 0)
588 goto fail;
589
590 if ((r = unit_watch_pid(UNIT(m), pid)) < 0)
591 /* FIXME: we need to do something here */
592 goto fail;
593
594 *_pid = pid;
595
596 return 0;
597
598 fail:
599 unit_unwatch_timer(UNIT(m), &m->timer_watch);
600
601 return r;
602 }
603
604 static void mount_enter_dead(Mount *m, bool success) {
605 assert(m);
606
607 if (!success)
608 m->failure = true;
609
610 mount_set_state(m, m->failure ? MOUNT_FAILED : MOUNT_DEAD);
611 }
612
613 static void mount_enter_mounted(Mount *m, bool success) {
614 assert(m);
615
616 if (!success)
617 m->failure = true;
618
619 mount_set_state(m, MOUNT_MOUNTED);
620 }
621
622 static void mount_enter_signal(Mount *m, MountState state, bool success) {
623 int r;
624 Set *pid_set = NULL;
625 bool wait_for_exit = false;
626
627 assert(m);
628
629 if (!success)
630 m->failure = true;
631
632 if (m->exec_context.kill_mode != KILL_NONE) {
633 int sig = (state == MOUNT_MOUNTING_SIGTERM ||
634 state == MOUNT_UNMOUNTING_SIGTERM ||
635 state == MOUNT_REMOUNTING_SIGTERM) ? m->exec_context.kill_signal : SIGKILL;
636
637 if (m->control_pid > 0) {
638 if (kill(m->exec_context.kill_mode == KILL_PROCESS_GROUP ?
639 -m->control_pid :
640 m->control_pid, sig) < 0 && errno != ESRCH)
641
642 log_warning("Failed to kill control process %li: %m", (long) m->control_pid);
643 else
644 wait_for_exit = true;
645 }
646
647 if (m->exec_context.kill_mode == KILL_CONTROL_GROUP) {
648
649 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) {
650 r = -ENOMEM;
651 goto fail;
652 }
653
654 /* Exclude the control pid from being killed via the cgroup */
655 if (m->control_pid > 0)
656 if ((r = set_put(pid_set, LONG_TO_PTR(m->control_pid))) < 0)
657 goto fail;
658
659 if ((r = cgroup_bonding_kill_list(m->meta.cgroup_bondings, sig, pid_set)) < 0) {
660 if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
661 log_warning("Failed to kill control group: %s", strerror(-r));
662 } else if (r > 0)
663 wait_for_exit = true;
664
665 set_free(pid_set);
666 }
667 }
668
669 if (wait_for_exit) {
670 if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
671 goto fail;
672
673 mount_set_state(m, state);
674 } else if (state == MOUNT_REMOUNTING_SIGTERM || state == MOUNT_REMOUNTING_SIGKILL)
675 mount_enter_mounted(m, true);
676 else
677 mount_enter_dead(m, true);
678
679 return;
680
681 fail:
682 log_warning("%s failed to kill processes: %s", m->meta.id, strerror(-r));
683
684 if (state == MOUNT_REMOUNTING_SIGTERM || state == MOUNT_REMOUNTING_SIGKILL)
685 mount_enter_mounted(m, false);
686 else
687 mount_enter_dead(m, false);
688
689 if (pid_set)
690 set_free(pid_set);
691 }
692
693 static void mount_enter_unmounting(Mount *m, bool success) {
694 int r;
695
696 assert(m);
697
698 if (!success)
699 m->failure = true;
700
701 m->control_command_id = MOUNT_EXEC_UNMOUNT;
702 m->control_command = m->exec_command + MOUNT_EXEC_UNMOUNT;
703
704 if ((r = exec_command_set(
705 m->control_command,
706 "/bin/umount",
707 m->where,
708 NULL)) < 0)
709 goto fail;
710
711 mount_unwatch_control_pid(m);
712
713 if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
714 goto fail;
715
716 mount_set_state(m, MOUNT_UNMOUNTING);
717
718 return;
719
720 fail:
721 log_warning("%s failed to run 'umount' task: %s", m->meta.id, strerror(-r));
722 mount_enter_mounted(m, false);
723 }
724
725 static void mount_enter_mounting(Mount *m) {
726 int r;
727
728 assert(m);
729
730 m->control_command_id = MOUNT_EXEC_MOUNT;
731 m->control_command = m->exec_command + MOUNT_EXEC_MOUNT;
732
733 mkdir_p(m->where, m->directory_mode);
734
735 if (m->from_fragment)
736 r = exec_command_set(
737 m->control_command,
738 "/bin/mount",
739 m->parameters_fragment.what,
740 m->where,
741 "-t", m->parameters_fragment.fstype,
742 m->parameters_fragment.options ? "-o" : NULL, m->parameters_fragment.options,
743 NULL);
744 else if (m->from_etc_fstab)
745 r = exec_command_set(
746 m->control_command,
747 "/bin/mount",
748 m->where,
749 NULL);
750 else
751 r = -ENOENT;
752
753 if (r < 0)
754 goto fail;
755
756 mount_unwatch_control_pid(m);
757
758 if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
759 goto fail;
760
761 mount_set_state(m, MOUNT_MOUNTING);
762
763 return;
764
765 fail:
766 log_warning("%s failed to run 'mount' task: %s", m->meta.id, strerror(-r));
767 mount_enter_dead(m, false);
768 }
769
770 static void mount_enter_mounting_done(Mount *m) {
771 assert(m);
772
773 mount_set_state(m, MOUNT_MOUNTING_DONE);
774 }
775
776 static void mount_enter_remounting(Mount *m, bool success) {
777 int r;
778
779 assert(m);
780
781 if (!success)
782 m->failure = true;
783
784 m->control_command_id = MOUNT_EXEC_REMOUNT;
785 m->control_command = m->exec_command + MOUNT_EXEC_REMOUNT;
786
787 if (m->from_fragment) {
788 char *buf = NULL;
789 const char *o;
790
791 if (m->parameters_fragment.options) {
792 if (!(buf = strappend("remount,", m->parameters_fragment.options))) {
793 r = -ENOMEM;
794 goto fail;
795 }
796
797 o = buf;
798 } else
799 o = "remount";
800
801 r = exec_command_set(
802 m->control_command,
803 "/bin/mount",
804 m->parameters_fragment.what,
805 m->where,
806 "-t", m->parameters_fragment.fstype,
807 "-o", o,
808 NULL);
809
810 free(buf);
811 } else if (m->from_etc_fstab)
812 r = exec_command_set(
813 m->control_command,
814 "/bin/mount",
815 m->where,
816 "-o", "remount",
817 NULL);
818 else
819 r = -ENOENT;
820
821 if (r < 0) {
822 r = -ENOMEM;
823 goto fail;
824 }
825
826 mount_unwatch_control_pid(m);
827
828 if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
829 goto fail;
830
831 mount_set_state(m, MOUNT_REMOUNTING);
832
833 return;
834
835 fail:
836 log_warning("%s failed to run 'remount' task: %s", m->meta.id, strerror(-r));
837 mount_enter_mounted(m, false);
838 }
839
840 static int mount_start(Unit *u) {
841 Mount *m = MOUNT(u);
842
843 assert(m);
844
845 /* We cannot fulfill this request right now, try again later
846 * please! */
847 if (m->state == MOUNT_UNMOUNTING ||
848 m->state == MOUNT_UNMOUNTING_SIGTERM ||
849 m->state == MOUNT_UNMOUNTING_SIGKILL)
850 return -EAGAIN;
851
852 /* Already on it! */
853 if (m->state == MOUNT_MOUNTING ||
854 m->state == MOUNT_MOUNTING_SIGTERM ||
855 m->state == MOUNT_MOUNTING_SIGKILL)
856 return 0;
857
858 assert(m->state == MOUNT_DEAD || m->state == MOUNT_FAILED);
859
860 m->failure = false;
861 mount_enter_mounting(m);
862 return 0;
863 }
864
865 static int mount_stop(Unit *u) {
866 Mount *m = MOUNT(u);
867
868 assert(m);
869
870 /* Already on it */
871 if (m->state == MOUNT_UNMOUNTING ||
872 m->state == MOUNT_UNMOUNTING_SIGKILL ||
873 m->state == MOUNT_UNMOUNTING_SIGTERM)
874 return 0;
875
876 assert(m->state == MOUNT_MOUNTING ||
877 m->state == MOUNT_MOUNTING_DONE ||
878 m->state == MOUNT_MOUNTED ||
879 m->state == MOUNT_MOUNTING_SIGTERM ||
880 m->state == MOUNT_MOUNTING_SIGKILL ||
881 m->state == MOUNT_REMOUNTING ||
882 m->state == MOUNT_REMOUNTING_SIGTERM ||
883 m->state == MOUNT_REMOUNTING_SIGKILL);
884
885 mount_enter_unmounting(m, true);
886 return 0;
887 }
888
889 static int mount_reload(Unit *u) {
890 Mount *m = MOUNT(u);
891
892 assert(m);
893
894 if (m->state == MOUNT_MOUNTING_DONE)
895 return -EAGAIN;
896
897 assert(m->state == MOUNT_MOUNTED);
898
899 mount_enter_remounting(m, true);
900 return 0;
901 }
902
903 static int mount_serialize(Unit *u, FILE *f, FDSet *fds) {
904 Mount *m = MOUNT(u);
905
906 assert(m);
907 assert(f);
908 assert(fds);
909
910 unit_serialize_item(u, f, "state", mount_state_to_string(m->state));
911 unit_serialize_item(u, f, "failure", yes_no(m->failure));
912
913 if (m->control_pid > 0)
914 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) m->control_pid);
915
916 if (m->control_command_id >= 0)
917 unit_serialize_item(u, f, "control-command", mount_exec_command_to_string(m->control_command_id));
918
919 return 0;
920 }
921
922 static int mount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
923 Mount *m = MOUNT(u);
924
925 assert(u);
926 assert(key);
927 assert(value);
928 assert(fds);
929
930 if (streq(key, "state")) {
931 MountState state;
932
933 if ((state = mount_state_from_string(value)) < 0)
934 log_debug("Failed to parse state value %s", value);
935 else
936 m->deserialized_state = state;
937 } else if (streq(key, "failure")) {
938 int b;
939
940 if ((b = parse_boolean(value)) < 0)
941 log_debug("Failed to parse failure value %s", value);
942 else
943 m->failure = b || m->failure;
944
945 } else if (streq(key, "control-pid")) {
946 pid_t pid;
947
948 if (parse_pid(value, &pid) < 0)
949 log_debug("Failed to parse control-pid value %s", value);
950 else
951 m->control_pid = pid;
952 } else if (streq(key, "control-command")) {
953 MountExecCommand id;
954
955 if ((id = mount_exec_command_from_string(value)) < 0)
956 log_debug("Failed to parse exec-command value %s", value);
957 else {
958 m->control_command_id = id;
959 m->control_command = m->exec_command + id;
960 }
961
962 } else
963 log_debug("Unknown serialization key '%s'", key);
964
965 return 0;
966 }
967
968 static UnitActiveState mount_active_state(Unit *u) {
969 assert(u);
970
971 return state_translation_table[MOUNT(u)->state];
972 }
973
974 static const char *mount_sub_state_to_string(Unit *u) {
975 assert(u);
976
977 return mount_state_to_string(MOUNT(u)->state);
978 }
979
980 static bool mount_check_gc(Unit *u) {
981 Mount *m = MOUNT(u);
982
983 assert(m);
984
985 return m->from_etc_fstab || m->from_proc_self_mountinfo;
986 }
987
988 static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) {
989 Mount *m = MOUNT(u);
990 bool success;
991
992 assert(m);
993 assert(pid >= 0);
994
995 if (pid != m->control_pid)
996 return;
997
998 m->control_pid = 0;
999
1000 success = is_clean_exit(code, status);
1001 m->failure = m->failure || !success;
1002
1003 if (m->control_command) {
1004 exec_status_exit(&m->control_command->exec_status, pid, code, status);
1005 m->control_command = NULL;
1006 m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
1007 }
1008
1009 log_full(success ? LOG_DEBUG : LOG_NOTICE,
1010 "%s mount process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
1011
1012 /* Note that mount(8) returning and the kernel sending us a
1013 * mount table change event might happen out-of-order. If an
1014 * operation succeed we assume the kernel will follow soon too
1015 * and already change into the resulting state. If it fails
1016 * we check if the kernel still knows about the mount. and
1017 * change state accordingly. */
1018
1019 switch (m->state) {
1020
1021 case MOUNT_MOUNTING:
1022 case MOUNT_MOUNTING_DONE:
1023 case MOUNT_MOUNTING_SIGKILL:
1024 case MOUNT_MOUNTING_SIGTERM:
1025 case MOUNT_REMOUNTING:
1026 case MOUNT_REMOUNTING_SIGKILL:
1027 case MOUNT_REMOUNTING_SIGTERM:
1028
1029 if (success)
1030 mount_enter_mounted(m, true);
1031 else if (m->from_proc_self_mountinfo)
1032 mount_enter_mounted(m, false);
1033 else
1034 mount_enter_dead(m, false);
1035 break;
1036
1037 case MOUNT_UNMOUNTING:
1038 case MOUNT_UNMOUNTING_SIGKILL:
1039 case MOUNT_UNMOUNTING_SIGTERM:
1040
1041 if (success)
1042 mount_enter_dead(m, true);
1043 else if (m->from_proc_self_mountinfo)
1044 mount_enter_mounted(m, false);
1045 else
1046 mount_enter_dead(m, false);
1047 break;
1048
1049 default:
1050 assert_not_reached("Uh, control process died at wrong time.");
1051 }
1052
1053 /* Notify clients about changed exit status */
1054 unit_add_to_dbus_queue(u);
1055 }
1056
1057 static void mount_timer_event(Unit *u, uint64_t elapsed, Watch *w) {
1058 Mount *m = MOUNT(u);
1059
1060 assert(m);
1061 assert(elapsed == 1);
1062 assert(w == &m->timer_watch);
1063
1064 switch (m->state) {
1065
1066 case MOUNT_MOUNTING:
1067 case MOUNT_MOUNTING_DONE:
1068 log_warning("%s mounting timed out. Stopping.", u->meta.id);
1069 mount_enter_signal(m, MOUNT_MOUNTING_SIGTERM, false);
1070 break;
1071
1072 case MOUNT_REMOUNTING:
1073 log_warning("%s remounting timed out. Stopping.", u->meta.id);
1074 mount_enter_signal(m, MOUNT_REMOUNTING_SIGTERM, false);
1075 break;
1076
1077 case MOUNT_UNMOUNTING:
1078 log_warning("%s unmounting timed out. Stopping.", u->meta.id);
1079 mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, false);
1080 break;
1081
1082 case MOUNT_MOUNTING_SIGTERM:
1083 log_warning("%s mounting timed out. Killing.", u->meta.id);
1084 mount_enter_signal(m, MOUNT_MOUNTING_SIGKILL, false);
1085 break;
1086
1087 case MOUNT_REMOUNTING_SIGTERM:
1088 log_warning("%s remounting timed out. Killing.", u->meta.id);
1089 mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, false);
1090 break;
1091
1092 case MOUNT_UNMOUNTING_SIGTERM:
1093 log_warning("%s unmounting timed out. Killing.", u->meta.id);
1094 mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, false);
1095 break;
1096
1097 case MOUNT_MOUNTING_SIGKILL:
1098 case MOUNT_REMOUNTING_SIGKILL:
1099 case MOUNT_UNMOUNTING_SIGKILL:
1100 log_warning("%s mount process still around after SIGKILL. Ignoring.", u->meta.id);
1101
1102 if (m->from_proc_self_mountinfo)
1103 mount_enter_mounted(m, false);
1104 else
1105 mount_enter_dead(m, false);
1106 break;
1107
1108 default:
1109 assert_not_reached("Timeout at wrong time.");
1110 }
1111 }
1112
1113 static int mount_add_one(
1114 Manager *m,
1115 const char *what,
1116 const char *where,
1117 const char *options,
1118 const char *fstype,
1119 bool from_proc_self_mountinfo,
1120 bool set_flags) {
1121 int r;
1122 Unit *u;
1123 bool delete;
1124 char *e, *w = NULL, *o = NULL, *f = NULL;
1125 MountParameters *p;
1126
1127 assert(m);
1128 assert(what);
1129 assert(where);
1130 assert(options);
1131 assert(fstype);
1132
1133 assert(!set_flags || from_proc_self_mountinfo);
1134
1135 /* Ignore API mount points. They should never be referenced in
1136 * dependencies ever. */
1137 if (mount_point_is_api(where))
1138 return 0;
1139
1140 if (streq(fstype, "autofs"))
1141 return 0;
1142
1143 /* probably some kind of swap, ignore */
1144 if (!is_path(where))
1145 return 0;
1146
1147 if (!(e = unit_name_from_path(where, ".mount")))
1148 return -ENOMEM;
1149
1150 if (!(u = manager_get_unit(m, e))) {
1151 delete = true;
1152
1153 if (!(u = unit_new(m))) {
1154 free(e);
1155 return -ENOMEM;
1156 }
1157
1158 r = unit_add_name(u, e);
1159 free(e);
1160
1161 if (r < 0)
1162 goto fail;
1163
1164 if (!(MOUNT(u)->where = strdup(where))) {
1165 r = -ENOMEM;
1166 goto fail;
1167 }
1168
1169 unit_add_to_load_queue(u);
1170 } else {
1171 delete = false;
1172 free(e);
1173 }
1174
1175 if (!(w = strdup(what)) ||
1176 !(o = strdup(options)) ||
1177 !(f = strdup(fstype))) {
1178 r = -ENOMEM;
1179 goto fail;
1180 }
1181
1182 if (from_proc_self_mountinfo) {
1183 p = &MOUNT(u)->parameters_proc_self_mountinfo;
1184
1185 if (set_flags) {
1186 MOUNT(u)->is_mounted = true;
1187 MOUNT(u)->just_mounted = !MOUNT(u)->from_proc_self_mountinfo;
1188 MOUNT(u)->just_changed = !streq_ptr(p->options, o);
1189 }
1190
1191 MOUNT(u)->from_proc_self_mountinfo = true;
1192 } else {
1193 p = &MOUNT(u)->parameters_etc_fstab;
1194 MOUNT(u)->from_etc_fstab = true;
1195 }
1196
1197 free(p->what);
1198 p->what = w;
1199
1200 free(p->options);
1201 p->options = o;
1202
1203 free(p->fstype);
1204 p->fstype = f;
1205
1206 unit_add_to_dbus_queue(u);
1207
1208 return 0;
1209
1210 fail:
1211 free(w);
1212 free(o);
1213 free(f);
1214
1215 if (delete && u)
1216 unit_free(u);
1217
1218 return r;
1219 }
1220
1221 static char *fstab_node_to_udev_node(char *p) {
1222 char *dn, *t, *u;
1223 int r;
1224
1225 /* FIXME: to follow udev's logic 100% we need to leave valid
1226 * UTF8 chars unescaped */
1227
1228 if (startswith(p, "LABEL=")) {
1229
1230 if (!(u = unquote(p+6, "\"\'")))
1231 return NULL;
1232
1233 t = xescape(u, "/ ");
1234 free(u);
1235
1236 if (!t)
1237 return NULL;
1238
1239 r = asprintf(&dn, "/dev/disk/by-label/%s", t);
1240 free(t);
1241
1242 if (r < 0)
1243 return NULL;
1244
1245 return dn;
1246 }
1247
1248 if (startswith(p, "UUID=")) {
1249
1250 if (!(u = unquote(p+5, "\"\'")))
1251 return NULL;
1252
1253 t = xescape(u, "/ ");
1254 free(u);
1255
1256 if (!t)
1257 return NULL;
1258
1259 r = asprintf(&dn, "/dev/disk/by-uuid/%s", ascii_strlower(t));
1260 free(t);
1261
1262 if (r < 0)
1263 return NULL;
1264
1265 return dn;
1266 }
1267
1268 return strdup(p);
1269 }
1270
1271 static int mount_find_pri(char *options) {
1272 char *end, *pri;
1273 unsigned long r;
1274
1275 if (!(pri = mount_test_option(options, "pri=")))
1276 return 0;
1277
1278 pri += 4;
1279
1280 errno = 0;
1281 r = strtoul(pri, &end, 10);
1282
1283 if (errno != 0)
1284 return -errno;
1285
1286 if (end == pri || (*end != ',' && *end != 0))
1287 return -EINVAL;
1288
1289 return (int) r;
1290 }
1291
1292 static int mount_load_etc_fstab(Manager *m) {
1293 FILE *f;
1294 int r;
1295 struct mntent* me;
1296
1297 assert(m);
1298
1299 errno = 0;
1300 if (!(f = setmntent("/etc/fstab", "r")))
1301 return -errno;
1302
1303 while ((me = getmntent(f))) {
1304 char *where, *what;
1305
1306 if (!(what = fstab_node_to_udev_node(me->mnt_fsname))) {
1307 r = -ENOMEM;
1308 goto finish;
1309 }
1310
1311 if (!(where = strdup(me->mnt_dir))) {
1312 free(what);
1313 r = -ENOMEM;
1314 goto finish;
1315 }
1316
1317 if (what[0] == '/')
1318 path_kill_slashes(what);
1319
1320 if (where[0] == '/')
1321 path_kill_slashes(where);
1322
1323 if (streq(me->mnt_type, "swap")) {
1324 int pri;
1325
1326 if ((pri = mount_find_pri(me->mnt_opts)) < 0)
1327 r = pri;
1328 else
1329 r = swap_add_one(m,
1330 what,
1331 pri,
1332 !!mount_test_option(me->mnt_opts, MNTOPT_NOAUTO),
1333 !!mount_test_option(me->mnt_opts, "nofail"),
1334 !!mount_test_option(me->mnt_opts, "comment=systemd.swapon"),
1335 false);
1336 } else
1337 r = mount_add_one(m, what, where, me->mnt_opts, me->mnt_type, false, false);
1338
1339 free(what);
1340 free(where);
1341
1342 if (r < 0)
1343 goto finish;
1344 }
1345
1346 r = 0;
1347 finish:
1348
1349 endmntent(f);
1350 return r;
1351 }
1352
1353 static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) {
1354 int r;
1355 char *device, *path, *options, *options2, *fstype, *d, *p, *o;
1356
1357 assert(m);
1358
1359 rewind(m->proc_self_mountinfo);
1360
1361 for (;;) {
1362 int k;
1363
1364 device = path = options = options2 = fstype = d = p = o = NULL;
1365
1366 if ((k = fscanf(m->proc_self_mountinfo,
1367 "%*s " /* (1) mount id */
1368 "%*s " /* (2) parent id */
1369 "%*s " /* (3) major:minor */
1370 "%*s " /* (4) root */
1371 "%ms " /* (5) mount point */
1372 "%ms" /* (6) mount options */
1373 "%*[^-]" /* (7) optional fields */
1374 "- " /* (8) seperator */
1375 "%ms " /* (9) file system type */
1376 "%ms" /* (10) mount source */
1377 "%ms" /* (11) mount options 2 */
1378 "%*[^\n]", /* some rubbish at the end */
1379 &path,
1380 &options,
1381 &fstype,
1382 &device,
1383 &options2)) != 5) {
1384
1385 if (k == EOF)
1386 break;
1387
1388 r = -EBADMSG;
1389 goto finish;
1390 }
1391
1392 if (asprintf(&o, "%s,%s", options, options2) < 0) {
1393 r = -ENOMEM;
1394 goto finish;
1395 }
1396
1397 if (!(d = cunescape(device)) ||
1398 !(p = cunescape(path))) {
1399 r = -ENOMEM;
1400 goto finish;
1401 }
1402
1403 if ((r = mount_add_one(m, d, p, o, fstype, true, set_flags)) < 0)
1404 goto finish;
1405
1406 free(device);
1407 free(path);
1408 free(options);
1409 free(options2);
1410 free(fstype);
1411 free(d);
1412 free(p);
1413 free(o);
1414 }
1415
1416 r = 0;
1417
1418 finish:
1419 free(device);
1420 free(path);
1421 free(options);
1422 free(options2);
1423 free(fstype);
1424 free(d);
1425 free(p);
1426 free(o);
1427
1428 return r;
1429 }
1430
1431 static void mount_shutdown(Manager *m) {
1432 assert(m);
1433
1434 if (m->proc_self_mountinfo) {
1435 fclose(m->proc_self_mountinfo);
1436 m->proc_self_mountinfo = NULL;
1437 }
1438 }
1439
1440 static int mount_enumerate(Manager *m) {
1441 int r;
1442 struct epoll_event ev;
1443 assert(m);
1444
1445 if (!m->proc_self_mountinfo) {
1446 if (!(m->proc_self_mountinfo = fopen("/proc/self/mountinfo", "re")))
1447 return -errno;
1448
1449 m->mount_watch.type = WATCH_MOUNT;
1450 m->mount_watch.fd = fileno(m->proc_self_mountinfo);
1451
1452 zero(ev);
1453 ev.events = EPOLLERR;
1454 ev.data.ptr = &m->mount_watch;
1455
1456 if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->mount_watch.fd, &ev) < 0)
1457 return -errno;
1458 }
1459
1460 if ((r = mount_load_etc_fstab(m)) < 0)
1461 goto fail;
1462
1463 if ((r = mount_load_proc_self_mountinfo(m, false)) < 0)
1464 goto fail;
1465
1466 return 0;
1467
1468 fail:
1469 mount_shutdown(m);
1470 return r;
1471 }
1472
1473 void mount_fd_event(Manager *m, int events) {
1474 Meta *meta;
1475 int r;
1476
1477 assert(m);
1478 assert(events == EPOLLERR);
1479
1480 /* The manager calls this for every fd event happening on the
1481 * /proc/self/mountinfo file, which informs us about mounting
1482 * table changes */
1483
1484 if ((r = mount_load_proc_self_mountinfo(m, true)) < 0) {
1485 log_error("Failed to reread /proc/self/mountinfo: %s", strerror(-r));
1486
1487 /* Reset flags, just in case, for later calls */
1488 LIST_FOREACH(units_per_type, meta, m->units_per_type[UNIT_MOUNT]) {
1489 Mount *mount = (Mount*) meta;
1490
1491 mount->is_mounted = mount->just_mounted = mount->just_changed = false;
1492 }
1493
1494 return;
1495 }
1496
1497 manager_dispatch_load_queue(m);
1498
1499 LIST_FOREACH(units_per_type, meta, m->units_per_type[UNIT_MOUNT]) {
1500 Mount *mount = (Mount*) meta;
1501
1502 if (!mount->is_mounted) {
1503 /* This has just been unmounted. */
1504
1505 mount->from_proc_self_mountinfo = false;
1506
1507 switch (mount->state) {
1508
1509 case MOUNT_MOUNTED:
1510 mount_enter_dead(mount, true);
1511 break;
1512
1513 default:
1514 mount_set_state(mount, mount->state);
1515 break;
1516
1517 }
1518
1519 } else if (mount->just_mounted || mount->just_changed) {
1520
1521 /* New or changed entrymount */
1522
1523 switch (mount->state) {
1524
1525 case MOUNT_DEAD:
1526 case MOUNT_FAILED:
1527 mount_enter_mounted(mount, true);
1528 break;
1529
1530 case MOUNT_MOUNTING:
1531 mount_enter_mounting_done(mount);
1532 break;
1533
1534 default:
1535 /* Nothing really changed, but let's
1536 * issue an notification call
1537 * nonetheless, in case somebody is
1538 * waiting for this. (e.g. file system
1539 * ro/rw remounts.) */
1540 mount_set_state(mount, mount->state);
1541 break;
1542 }
1543 }
1544
1545 /* Reset the flags for later calls */
1546 mount->is_mounted = mount->just_mounted = mount->just_changed = false;
1547 }
1548 }
1549
1550 static void mount_reset_failed(Unit *u) {
1551 Mount *m = MOUNT(u);
1552
1553 assert(m);
1554
1555 if (m->state == MOUNT_FAILED)
1556 mount_set_state(m, MOUNT_DEAD);
1557
1558 m->failure = false;
1559 }
1560
1561 static const char* const mount_state_table[_MOUNT_STATE_MAX] = {
1562 [MOUNT_DEAD] = "dead",
1563 [MOUNT_MOUNTING] = "mounting",
1564 [MOUNT_MOUNTING_DONE] = "mounting-done",
1565 [MOUNT_MOUNTED] = "mounted",
1566 [MOUNT_REMOUNTING] = "remounting",
1567 [MOUNT_UNMOUNTING] = "unmounting",
1568 [MOUNT_MOUNTING_SIGTERM] = "mounting-sigterm",
1569 [MOUNT_MOUNTING_SIGKILL] = "mounting-sigkill",
1570 [MOUNT_REMOUNTING_SIGTERM] = "remounting-sigterm",
1571 [MOUNT_REMOUNTING_SIGKILL] = "remounting-sigkill",
1572 [MOUNT_UNMOUNTING_SIGTERM] = "unmounting-sigterm",
1573 [MOUNT_UNMOUNTING_SIGKILL] = "unmounting-sigkill",
1574 [MOUNT_FAILED] = "failed"
1575 };
1576
1577 DEFINE_STRING_TABLE_LOOKUP(mount_state, MountState);
1578
1579 static const char* const mount_exec_command_table[_MOUNT_EXEC_COMMAND_MAX] = {
1580 [MOUNT_EXEC_MOUNT] = "ExecMount",
1581 [MOUNT_EXEC_UNMOUNT] = "ExecUnmount",
1582 [MOUNT_EXEC_REMOUNT] = "ExecRemount",
1583 };
1584
1585 DEFINE_STRING_TABLE_LOOKUP(mount_exec_command, MountExecCommand);
1586
1587 const UnitVTable mount_vtable = {
1588 .suffix = ".mount",
1589
1590 .no_alias = true,
1591 .no_instances = true,
1592 .no_isolate = true,
1593 .show_status = true,
1594
1595 .init = mount_init,
1596 .load = mount_load,
1597 .done = mount_done,
1598
1599 .coldplug = mount_coldplug,
1600
1601 .dump = mount_dump,
1602
1603 .start = mount_start,
1604 .stop = mount_stop,
1605 .reload = mount_reload,
1606
1607 .serialize = mount_serialize,
1608 .deserialize_item = mount_deserialize_item,
1609
1610 .active_state = mount_active_state,
1611 .sub_state_to_string = mount_sub_state_to_string,
1612
1613 .check_gc = mount_check_gc,
1614
1615 .sigchld_event = mount_sigchld_event,
1616 .timer_event = mount_timer_event,
1617
1618 .reset_failed = mount_reset_failed,
1619
1620 .bus_interface = "org.freedesktop.systemd1.Mount",
1621 .bus_message_handler = bus_mount_message_handler,
1622 .bus_invalidating_properties = bus_mount_invalidating_properties,
1623
1624 .enumerate = mount_enumerate,
1625 .shutdown = mount_shutdown
1626 };
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