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device: allow easy identification of network interfaces without their full sysfs...
[people/ms/systemd.git] / mount.c
CommitLineData
5cb5a6ff
LP		 1/*-*- Mode: C; c-basic-offset: 8 -*-*/
2
a7334b09
LP		 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
5cb5a6ff 22#include <errno.h>
b08d03ff
LP		 23#include <stdio.h>
24#include <mntent.h>
ef734fd6 25#include <sys/epoll.h>
e537352b 26#include <signal.h>
5cb5a6ff 27
87f0e418 28#include "unit.h"
5cb5a6ff
LP		 29#include "mount.h"
30#include "load-fragment.h"
5cb5a6ff 31#include "load-dropin.h"
b08d03ff 32#include "log.h"
e537352b
LP		 33#include "strv.h"
34#include "mount-setup.h"
9e2f7c11 35#include "unit-name.h"
4139c1b2
LP		 36#include "mount.h"
37#include "dbus-mount.h"
5cb5a6ff 38
f50e0a01
LP		 39static const UnitActiveState state_translation_table[_MOUNT_STATE_MAX] = {
40 [MOUNT_DEAD] = UNIT_INACTIVE,
41 [MOUNT_MOUNTING] = UNIT_ACTIVATING,
e537352b 42 [MOUNT_MOUNTING_DONE] = UNIT_ACTIVE,
f50e0a01 43 [MOUNT_MOUNTED] = UNIT_ACTIVE,
e537352b 44 [MOUNT_REMOUNTING] = UNIT_ACTIVE_RELOADING,
f50e0a01 45 [MOUNT_UNMOUNTING] = UNIT_DEACTIVATING,
e537352b
LP		 46 [MOUNT_MOUNTING_SIGTERM] = UNIT_DEACTIVATING,
47 [MOUNT_MOUNTING_SIGKILL] = UNIT_DEACTIVATING,
48 [MOUNT_REMOUNTING_SIGTERM] = UNIT_ACTIVE_RELOADING,
49 [MOUNT_REMOUNTING_SIGKILL] = UNIT_ACTIVE_RELOADING,
50 [MOUNT_UNMOUNTING_SIGTERM] = UNIT_DEACTIVATING,
51 [MOUNT_UNMOUNTING_SIGKILL] = UNIT_DEACTIVATING,
f50e0a01
LP		 52 [MOUNT_MAINTAINANCE] = UNIT_INACTIVE,
53};
5cb5a6ff 54
a16e1123
LP		 55static void mount_init(Unit *u) {
56 Mount *m = MOUNT(u);
5cb5a6ff 57
a16e1123
LP		 58 assert(u);
59 assert(u->meta.load_state == UNIT_STUB);
60
61 m->timeout_usec = DEFAULT_TIMEOUT_USEC;
62 exec_context_init(&m->exec_context);
8d567588 63
a16e1123
LP		 64 /* We need to make sure that /bin/mount is always called in
65 * the same process group as us, so that the autofs kernel
66 * side doesn't send us another mount request while we are
67 * already trying to comply its last one. */
68 m->exec_context.no_setsid = true;
8d567588 69
a16e1123
LP		 70 m->timer_watch.type = WATCH_INVALID;
71
72 m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
8d567588
LP		 73}
74
a16e1123 75static void mount_unwatch_control_pid(Mount *m) {
5e94833f
LP		 76 assert(m);
77
78 if (m->control_pid <= 0)
79 return;
80
81 unit_unwatch_pid(UNIT(m), m->control_pid);
82 m->control_pid = 0;
83}
84
e537352b
LP		 85static void mount_parameters_done(MountParameters *p) {
86 assert(p);
87
88 free(p->what);
89 free(p->options);
90 free(p->fstype);
91
92 p->what = p->options = p->fstype = NULL;
93}
94
87f0e418 95static void mount_done(Unit *u) {
ef734fd6 96 Mount *m = MOUNT(u);
034c6ed7 97
ef734fd6 98 assert(m);
034c6ed7 99
e537352b
LP		 100 free(m->where);
101 m->where = NULL;
f50e0a01 102
e537352b
LP		 103 mount_parameters_done(&m->parameters_etc_fstab);
104 mount_parameters_done(&m->parameters_proc_self_mountinfo);
105 mount_parameters_done(&m->parameters_fragment);
ef734fd6 106
e537352b
LP		 107 exec_context_done(&m->exec_context);
108 exec_command_done_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX);
109 m->control_command = NULL;
f50e0a01 110
a16e1123 111 mount_unwatch_control_pid(m);
f50e0a01 112
e537352b 113 unit_unwatch_timer(u, &m->timer_watch);
f50e0a01
LP		 114}
115
07b0b134 116int mount_add_node_links(Unit *u, const char *what) {
b08d03ff
LP		 117 Unit *device;
118 char *e;
119 int r;
120
07b0b134 121 assert(u);
b08d03ff 122
07b0b134 123 if (!what)
e537352b
LP		 124 /* We observe kernel mounts only while they are live,
125 * hence don't create any links for them */
126 return 0;
127
07b0b134
ML		 128 /* Adds in links to the device that this node is based on */
129
e537352b 130 if (!path_startswith(what, "/dev/"))
b08d03ff
LP		 131 return 0;
132
9e2f7c11 133 if (!(e = unit_name_build_escape(what+1, NULL, ".device")))
b08d03ff
LP		 134 return -ENOMEM;
135
07b0b134 136 r = manager_load_unit(u->meta.manager, e, NULL, &device);
b08d03ff
LP		 137 free(e);
138
139 if (r < 0)
140 return r;
141
07b0b134 142 if ((r = unit_add_dependency(u, UNIT_AFTER, device, true)) < 0)
b08d03ff
LP		 143 return r;
144
07b0b134 145 if ((r = unit_add_dependency(u, UNIT_REQUIRES, device, true)) < 0)
b08d03ff
LP		 146 return r;
147
07b0b134
ML		 148 if (u->meta.manager->running_as == MANAGER_INIT ||
149 u->meta.manager->running_as == MANAGER_SYSTEM)
150 if ((r = unit_add_dependency(device, UNIT_WANTS, u, false)) < 0)
e537352b 151 return r;
b08d03ff
LP		 152
153 return 0;
154}
155
07b0b134 156int mount_add_path_links(Unit *u, const char *where, bool requires) {
ef734fd6 157 Meta *other;
b08d03ff
LP		 158 int r;
159
07b0b134 160 assert(u);
e537352b 161
b08d03ff
LP		 162 /* Adds in link to other mount points, that might lie below or
163 * above us in the hierarchy */
164
07b0b134 165 LIST_FOREACH(units_per_type, other, u->meta.manager->units_per_type[UNIT_MOUNT]) {
b08d03ff
LP		 166 Mount *n;
167
ef734fd6 168 n = (Mount*) other;
b08d03ff 169
07b0b134 170 if (UNIT(n) == u)
79ef004b 171 continue;
b08d03ff 172
07b0b134 173 if (u->meta.load_state != UNIT_LOADED)
e537352b
LP		 174 continue;
175
07b0b134 176 if (path_startswith(where, n->where)) {
b08d03ff 177
07b0b134 178 if ((r = unit_add_dependency(u, UNIT_AFTER, UNIT(other), true)) < 0)
b08d03ff
LP		 179 return r;
180
07b0b134
ML		 181 if (requires)
182 if ((r = unit_add_dependency(u, UNIT_REQUIRES, UNIT(other), true)) < 0)
e537352b 183 return r;
b08d03ff 184
07b0b134 185 } else if (path_startswith(n->where, where)) {
b08d03ff 186
07b0b134 187 if ((r = unit_add_dependency(u, UNIT_BEFORE, UNIT(other), true)) < 0)
b08d03ff
LP		 188 return r;
189
07b0b134
ML		 190 if (requires)
191 if ((r = unit_add_dependency(UNIT(other), UNIT_REQUIRES, u, true)) < 0)
e537352b 192 return r;
b08d03ff
LP		 193 }
194 }
195
196 return 0;
197}
198
07b0b134 199static char* mount_test_option(const char *haystack, const char *needle) {
e537352b
LP		 200 struct mntent me;
201
202 assert(needle);
203
204 /* Like glibc's hasmntopt(), but works on a string, not a
205 * struct mntent */
206
207 if (!haystack)
208 return false;
209
210 zero(me);
211 me.mnt_opts = (char*) haystack;
212
07b0b134 213 return hasmntopt(&me, needle);
e537352b
LP		 214}
215
216static int mount_add_target_links(Mount *m) {
217 const char *target;
218 MountParameters *p;
a16e1123 219 Unit *tu;
e537352b 220 int r;
a16e1123 221 bool noauto, handle, automount;
e537352b
LP		 222
223 assert(m);
224
225 if (m->from_fragment)
226 p = &m->parameters_fragment;
227 else if (m->from_etc_fstab)
228 p = &m->parameters_etc_fstab;
229 else
230 return 0;
231
07b0b134
ML		 232 noauto = !!mount_test_option(p->options, MNTOPT_NOAUTO);
233 handle = !!mount_test_option(p->options, "comment=systemd.mount");
234 automount = !!mount_test_option(p->options, "comment=systemd.automount");
e537352b 235
a16e1123 236 if (noauto && !handle && !automount)
e537352b
LP		 237 return 0;
238
239 if (mount_test_option(p->options, "_netdev") ||
240 fstype_is_network(p->fstype))
241 target = SPECIAL_REMOTE_FS_TARGET;
242 else
243 target = SPECIAL_LOCAL_FS_TARGET;
244
a16e1123 245 if ((r = manager_load_unit(UNIT(m)->meta.manager, target, NULL, &tu)) < 0)
e537352b
LP		 246 return r;
247
a16e1123
LP		 248 if (automount) {
249 Unit *am;
250
251 if ((r = unit_load_related_unit(UNIT(m), ".automount", &am)) < 0)
9fcc065a 252 return r;
e537352b 253
701cc384 254 if ((r = unit_add_dependency(tu, UNIT_WANTS, UNIT(am), true)) < 0)
a16e1123
LP		 255 return r;
256
701cc384 257 return unit_add_dependency(UNIT(am), UNIT_BEFORE, tu, true);
a16e1123
LP		 258
259 } else {
260
261 if (handle)
701cc384 262 if ((r = unit_add_dependency(tu, UNIT_WANTS, UNIT(m), true)) < 0)
a16e1123
LP		 263 return r;
264
701cc384 265 return unit_add_dependency(UNIT(m), UNIT_BEFORE, tu, true);
a16e1123 266 }
e537352b
LP		 267}
268
8d567588
LP		 269static int mount_verify(Mount *m) {
270 bool b;
271 char *e;
272 assert(m);
273
274 if (UNIT(m)->meta.load_state != UNIT_LOADED)
275 return 0;
276
a16e1123 277 if (!(e = unit_name_from_path(m->where, ".mount")))
8d567588
LP		 278 return -ENOMEM;
279
280 b = unit_has_name(UNIT(m), e);
281 free(e);
282
283 if (!b) {
284 log_error("%s's Where setting doesn't match unit name. Refusing.", UNIT(m)->meta.id);
285 return -EINVAL;
286 }
287
288 return 0;
289}
290
e537352b
LP		 291static int mount_load(Unit *u) {
292 Mount *m = MOUNT(u);
293 int r;
294
295 assert(u);
296 assert(u->meta.load_state == UNIT_STUB);
297
298 if ((r = unit_load_fragment_and_dropin_optional(u)) < 0)
299 return r;
300
301 /* This is a new unit? Then let's add in some extras */
302 if (u->meta.load_state == UNIT_LOADED) {
07b0b134
ML		 303 const char *what = m->parameters_fragment.what;
304 if (!what)
305 what = m->parameters_etc_fstab.what;
e537352b 306
a16e1123
LP		 307 if (!m->where)
308 if (!(m->where = unit_name_to_path(u->meta.id)))
309 return -ENOMEM;
310
311 path_kill_slashes(m->where);
312
e537352b
LP		 313 /* Minor validity checking */
314 if ((m->parameters_fragment.options || m->parameters_fragment.fstype) && !m->parameters_fragment.what)
315 return -EBADMSG;
316
317 if (m->parameters_fragment.what)
318 m->from_fragment = true;
319
07b0b134 320 if ((r = mount_add_node_links(u, what)) < 0)
e537352b
LP		 321 return r;
322
07b0b134 323 if ((r = mount_add_path_links(u, m->where, m->from_etc_fstab || m->from_fragment)) < 0)
e537352b
LP		 324 return r;
325
326 if ((r = mount_add_target_links(MOUNT(u))) < 0)
327 return r;
328
329 if ((r = unit_add_default_cgroup(u)) < 0)
330 return r;
331 }
332
8d567588 333 return mount_verify(m);
e537352b
LP		 334}
335
a16e1123
LP		 336static int mount_notify_automount(Mount *m, int status) {
337 Unit *p;
338 int r;
339
340 assert(m);
341
342 if ((r = unit_get_related_unit(UNIT(m), ".automount", &p)) < 0)
343 return r == -ENOENT ? 0 : r;
344
345 return automount_send_ready(AUTOMOUNT(p), status);
346}
347
e537352b
LP		 348static void mount_set_state(Mount *m, MountState state) {
349 MountState old_state;
350 assert(m);
351
352 old_state = m->state;
353 m->state = state;
354
355 if (state != MOUNT_MOUNTING &&
356 state != MOUNT_MOUNTING_DONE &&
357 state != MOUNT_REMOUNTING &&
358 state != MOUNT_UNMOUNTING &&
359 state != MOUNT_MOUNTING_SIGTERM &&
360 state != MOUNT_MOUNTING_SIGKILL &&
361 state != MOUNT_UNMOUNTING_SIGTERM &&
362 state != MOUNT_UNMOUNTING_SIGKILL &&
363 state != MOUNT_REMOUNTING_SIGTERM &&
364 state != MOUNT_REMOUNTING_SIGKILL) {
365 unit_unwatch_timer(UNIT(m), &m->timer_watch);
a16e1123 366 mount_unwatch_control_pid(m);
e537352b 367 m->control_command = NULL;
a16e1123 368 m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
e537352b
LP		 369 }
370
8d567588
LP		 371 if (state == MOUNT_MOUNTED ||
372 state == MOUNT_REMOUNTING)
373 mount_notify_automount(m, 0);
374 else if (state == MOUNT_DEAD ||
375 state == MOUNT_UNMOUNTING ||
376 state == MOUNT_MOUNTING_SIGTERM ||
377 state == MOUNT_MOUNTING_SIGKILL ||
378 state == MOUNT_REMOUNTING_SIGTERM ||
379 state == MOUNT_REMOUNTING_SIGKILL ||
380 state == MOUNT_UNMOUNTING_SIGTERM ||
381 state == MOUNT_UNMOUNTING_SIGKILL ||
382 state == MOUNT_MAINTAINANCE)
383 mount_notify_automount(m, -ENODEV);
384
e537352b 385 if (state != old_state)
40d50879 386 log_debug("%s changed %s -> %s",
a16e1123
LP		 387 UNIT(m)->meta.id,
388 mount_state_to_string(old_state),
389 mount_state_to_string(state));
e537352b
LP		 390
391 unit_notify(UNIT(m), state_translation_table[old_state], state_translation_table[state]);
392}
393
394static int mount_coldplug(Unit *u) {
395 Mount *m = MOUNT(u);
a16e1123
LP		 396 MountState new_state = MOUNT_DEAD;
397 int r;
e537352b
LP		 398
399 assert(m);
400 assert(m->state == MOUNT_DEAD);
401
a16e1123
LP		 402 if (m->deserialized_state != m->state)
403 new_state = m->deserialized_state;
404 else if (m->from_proc_self_mountinfo)
405 new_state = MOUNT_MOUNTED;
e537352b 406
a16e1123 407 if (new_state != m->state) {
e537352b 408
a16e1123
LP		 409 if (new_state == MOUNT_MOUNTING ||
410 new_state == MOUNT_MOUNTING_DONE ||
411 new_state == MOUNT_REMOUNTING ||
412 new_state == MOUNT_UNMOUNTING ||
413 new_state == MOUNT_MOUNTING_SIGTERM ||
414 new_state == MOUNT_MOUNTING_SIGKILL ||
415 new_state == MOUNT_UNMOUNTING_SIGTERM ||
416 new_state == MOUNT_UNMOUNTING_SIGKILL ||
417 new_state == MOUNT_REMOUNTING_SIGTERM ||
418 new_state == MOUNT_REMOUNTING_SIGKILL) {
e537352b 419
a16e1123
LP		 420 if (m->control_pid <= 0)
421 return -EBADMSG;
e537352b 422
a16e1123
LP		 423 if ((r = unit_watch_pid(UNIT(m), m->control_pid)) < 0)
424 return r;
e537352b 425
a16e1123
LP		 426 if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
427 return r;
428 }
e537352b 429
a16e1123
LP		 430 mount_set_state(m, new_state);
431 }
e537352b
LP		 432
433 return 0;
e537352b
LP		 434}
435
436static void mount_dump(Unit *u, FILE *f, const char *prefix) {
437 Mount *m = MOUNT(u);
438 MountParameters *p;
439
440 assert(m);
441 assert(f);
442
443 if (m->from_proc_self_mountinfo)
444 p = &m->parameters_proc_self_mountinfo;
445 else if (m->from_fragment)
446 p = &m->parameters_fragment;
447 else
448 p = &m->parameters_etc_fstab;
449
450 fprintf(f,
451 "%sMount State: %s\n"
452 "%sWhere: %s\n"
453 "%sWhat: %s\n"
454 "%sFile System Type: %s\n"
455 "%sOptions: %s\n"
456 "%sFrom /etc/fstab: %s\n"
457 "%sFrom /proc/self/mountinfo: %s\n"
458 "%sFrom fragment: %s\n"
459 "%sKillMode: %s\n",
a16e1123 460 prefix, mount_state_to_string(m->state),
e537352b
LP		 461 prefix, m->where,
462 prefix, strna(p->what),
463 prefix, strna(p->fstype),
464 prefix, strna(p->options),
465 prefix, yes_no(m->from_etc_fstab),
466 prefix, yes_no(m->from_proc_self_mountinfo),
467 prefix, yes_no(m->from_fragment),
468 prefix, kill_mode_to_string(m->kill_mode));
469
470 if (m->control_pid > 0)
471 fprintf(f,
472 "%sControl PID: %llu\n",
473 prefix, (unsigned long long) m->control_pid);
474
475 exec_context_dump(&m->exec_context, f, prefix);
476}
477
a16e1123
LP		 478static int mount_spawn(Mount *m, ExecCommand *c, pid_t *_pid) {
479 pid_t pid;
480 int r;
481
482 assert(m);
483 assert(c);
484 assert(_pid);
485
486 if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
487 goto fail;
488
489 if ((r = exec_spawn(c,
490 NULL,
491 &m->exec_context,
492 NULL, 0,
1137a57c 493 m->meta.manager->environment,
a16e1123
LP		 494 true,
495 true,
496 UNIT(m)->meta.manager->confirm_spawn,
497 UNIT(m)->meta.cgroup_bondings,
498 &pid)) < 0)
499 goto fail;
500
501 if ((r = unit_watch_pid(UNIT(m), pid)) < 0)
502 /* FIXME: we need to do something here */
503 goto fail;
504
505 *_pid = pid;
506
507 return 0;
508
509fail:
510 unit_unwatch_timer(UNIT(m), &m->timer_watch);
511
512 return r;
513}
514
e537352b
LP		 515static void mount_enter_dead(Mount *m, bool success) {
516 assert(m);
517
518 if (!success)
519 m->failure = true;
520
521 mount_set_state(m, m->failure ? MOUNT_MAINTAINANCE : MOUNT_DEAD);
522}
523
80876c20
LP		 524static void mount_enter_mounted(Mount *m, bool success) {
525 assert(m);
526
527 if (!success)
528 m->failure = true;
529
530 mount_set_state(m, MOUNT_MOUNTED);
531}
532
e537352b
LP		 533static void mount_enter_signal(Mount *m, MountState state, bool success) {
534 int r;
80876c20 535 bool sent = false;
e537352b
LP		 536
537 assert(m);
538
539 if (!success)
540 m->failure = true;
541
80876c20
LP		 542 if (m->kill_mode != KILL_NONE) {
543 int sig = (state == MOUNT_MOUNTING_SIGTERM ||
544 state == MOUNT_UNMOUNTING_SIGTERM ||
545 state == MOUNT_REMOUNTING_SIGTERM) ? SIGTERM : SIGKILL;
e537352b
LP		 546
547 if (m->kill_mode == KILL_CONTROL_GROUP) {
548
549 if ((r = cgroup_bonding_kill_list(UNIT(m)->meta.cgroup_bondings, sig)) < 0) {
550 if (r != -EAGAIN && r != -ESRCH)
551 goto fail;
552 } else
553 sent = true;
554 }
555
80876c20 556 if (!sent && m->control_pid > 0)
e537352b
LP		 557 if (kill(m->kill_mode == KILL_PROCESS ? m->control_pid : -m->control_pid, sig) < 0 && errno != ESRCH) {
558 r = -errno;
559 goto fail;
560 }
561 }
562
80876c20
LP		 563 if (sent) {
564 if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
565 goto fail;
e537352b 566
80876c20
LP		 567 mount_set_state(m, state);
568 } else if (state == MOUNT_REMOUNTING_SIGTERM || state == MOUNT_REMOUNTING_SIGKILL)
569 mount_enter_mounted(m, true);
570 else
e537352b
LP		 571 mount_enter_dead(m, true);
572
573 return;
574
575fail:
9e2f7c11 576 log_warning("%s failed to kill processes: %s", UNIT(m)->meta.id, strerror(-r));
e537352b 577
80876c20
LP		 578 if (state == MOUNT_REMOUNTING_SIGTERM || state == MOUNT_REMOUNTING_SIGKILL)
579 mount_enter_mounted(m, false);
580 else
581 mount_enter_dead(m, false);
e537352b
LP		 582}
583
584static void mount_enter_unmounting(Mount *m, bool success) {
e537352b
LP		 585 int r;
586
587 assert(m);
588
589 if (!success)
590 m->failure = true;
591
a16e1123
LP		 592 m->control_command_id = MOUNT_EXEC_UNMOUNT;
593 m->control_command = m->exec_command + MOUNT_EXEC_UNMOUNT;
e537352b
LP		 594
595 if ((r = exec_command_set(
a16e1123 596 m->control_command,
e537352b
LP		 597 "/bin/umount",
598 m->where,
599 NULL)) < 0)
600 goto fail;
601
a16e1123 602 mount_unwatch_control_pid(m);
5e94833f 603
a16e1123 604 if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
e537352b
LP		 605 goto fail;
606
607 mount_set_state(m, MOUNT_UNMOUNTING);
608
609 return;
610
611fail:
9e2f7c11 612 log_warning("%s failed to run umount exectuable: %s", UNIT(m)->meta.id, strerror(-r));
e537352b
LP		 613 mount_enter_mounted(m, false);
614}
615
8d567588 616static void mount_enter_mounting(Mount *m) {
e537352b
LP		 617 int r;
618
619 assert(m);
620
a16e1123
LP		 621 m->control_command_id = MOUNT_EXEC_MOUNT;
622 m->control_command = m->exec_command + MOUNT_EXEC_MOUNT;
e537352b
LP		 623
624 if (m->from_fragment)
625 r = exec_command_set(
a16e1123 626 m->control_command,
e537352b
LP		 627 "/bin/mount",
628 m->parameters_fragment.what,
629 m->where,
630 "-t", m->parameters_fragment.fstype,
8d567588 631 m->parameters_fragment.options ? "-o" : NULL, m->parameters_fragment.options,
e537352b
LP		 632 NULL);
633 else if (m->from_etc_fstab)
634 r = exec_command_set(
a16e1123 635 m->control_command,
e537352b
LP		 636 "/bin/mount",
637 m->where,
638 NULL);
639 else
640 r = -ENOENT;
641
642 if (r < 0)
643 goto fail;
644
a16e1123 645 mount_unwatch_control_pid(m);
5e94833f 646
a16e1123 647 if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
e537352b
LP		 648 goto fail;
649
650 mount_set_state(m, MOUNT_MOUNTING);
651
652 return;
653
654fail:
9e2f7c11 655 log_warning("%s failed to run mount exectuable: %s", UNIT(m)->meta.id, strerror(-r));
e537352b
LP		 656 mount_enter_dead(m, false);
657}
658
8d567588 659static void mount_enter_mounting_done(Mount *m) {
e537352b
LP		 660 assert(m);
661
e537352b
LP		 662 mount_set_state(m, MOUNT_MOUNTING_DONE);
663}
664
665static void mount_enter_remounting(Mount *m, bool success) {
e537352b
LP		 666 int r;
667
668 assert(m);
669
670 if (!success)
671 m->failure = true;
672
a16e1123
LP		 673 m->control_command_id = MOUNT_EXEC_REMOUNT;
674 m->control_command = m->exec_command + MOUNT_EXEC_REMOUNT;
e537352b
LP		 675
676 if (m->from_fragment) {
677 char *buf = NULL;
678 const char *o;
679
680 if (m->parameters_fragment.options) {
681 if (!(buf = strappend("remount,", m->parameters_fragment.options))) {
682 r = -ENOMEM;
683 goto fail;
684 }
685
686 o = buf;
687 } else
688 o = "remount";
689
690 r = exec_command_set(
a16e1123 691 m->control_command,
e537352b
LP		 692 "/bin/mount",
693 m->parameters_fragment.what,
694 m->where,
695 "-t", m->parameters_fragment.fstype,
696 "-o", o,
697 NULL);
698
699 free(buf);
700 } else if (m->from_etc_fstab)
701 r = exec_command_set(
a16e1123 702 m->control_command,
e537352b
LP		 703 "/bin/mount",
704 m->where,
705 "-o", "remount",
706 NULL);
707 else
708 r = -ENOENT;
709
710 if (r < 0) {
711 r = -ENOMEM;
712 goto fail;
713 }
714
a16e1123 715 mount_unwatch_control_pid(m);
5e94833f 716
a16e1123 717 if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
e537352b
LP		 718 goto fail;
719
720 mount_set_state(m, MOUNT_REMOUNTING);
721
722 return;
723
724fail:
725 mount_enter_mounted(m, false);
726}
727
728static int mount_start(Unit *u) {
729 Mount *m = MOUNT(u);
730
731 assert(m);
732
733 /* We cannot fulfill this request right now, try again later
734 * please! */
735 if (m->state == MOUNT_UNMOUNTING ||
736 m->state == MOUNT_UNMOUNTING_SIGTERM ||
737 m->state == MOUNT_UNMOUNTING_SIGKILL)
738 return -EAGAIN;
739
740 /* Already on it! */
741 if (m->state == MOUNT_MOUNTING ||
742 m->state == MOUNT_MOUNTING_SIGTERM ||
743 m->state == MOUNT_MOUNTING_SIGKILL)
744 return 0;
745
746 assert(m->state == MOUNT_DEAD || m->state == MOUNT_MAINTAINANCE);
747
748 m->failure = false;
8d567588 749 mount_enter_mounting(m);
e537352b
LP		 750 return 0;
751}
752
753static int mount_stop(Unit *u) {
754 Mount *m = MOUNT(u);
755
756 assert(m);
757
758 /* Cann't do this right now. */
759 if (m->state == MOUNT_MOUNTING ||
760 m->state == MOUNT_MOUNTING_DONE ||
761 m->state == MOUNT_MOUNTING_SIGTERM ||
762 m->state == MOUNT_MOUNTING_SIGKILL ||
763 m->state == MOUNT_REMOUNTING ||
764 m->state == MOUNT_REMOUNTING_SIGTERM ||
765 m->state == MOUNT_REMOUNTING_SIGKILL)
766 return -EAGAIN;
767
768 /* Already on it */
769 if (m->state == MOUNT_UNMOUNTING ||
770 m->state == MOUNT_UNMOUNTING_SIGKILL ||
771 m->state == MOUNT_UNMOUNTING_SIGTERM)
772 return 0;
773
774 assert(m->state == MOUNT_MOUNTED);
775
776 mount_enter_unmounting(m, true);
777 return 0;
778}
779
780static int mount_reload(Unit *u) {
781 Mount *m = MOUNT(u);
782
783 assert(m);
784
785 if (m->state == MOUNT_MOUNTING_DONE)
786 return -EAGAIN;
787
788 assert(m->state == MOUNT_MOUNTED);
789
790 mount_enter_remounting(m, true);
791 return 0;
792}
793
a16e1123
LP		 794static int mount_serialize(Unit *u, FILE *f, FDSet *fds) {
795 Mount *m = MOUNT(u);
796
797 assert(m);
798 assert(f);
799 assert(fds);
800
801 unit_serialize_item(u, f, "state", mount_state_to_string(m->state));
802 unit_serialize_item(u, f, "failure", yes_no(m->failure));
803
804 if (m->control_pid > 0)
805 unit_serialize_item_format(u, f, "control-pid", "%u", (unsigned) m->control_pid);
806
807 if (m->control_command_id >= 0)
808 unit_serialize_item(u, f, "control-command", mount_exec_command_to_string(m->control_command_id));
809
810 return 0;
811}
812
813static int mount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
814 Mount *m = MOUNT(u);
815 int r;
816
817 assert(u);
818 assert(key);
819 assert(value);
820 assert(fds);
821
822 if (streq(key, "state")) {
823 MountState state;
824
825 if ((state = mount_state_from_string(value)) < 0)
826 log_debug("Failed to parse state value %s", value);
827 else
828 m->deserialized_state = state;
829 } else if (streq(key, "failure")) {
830 int b;
831
832 if ((b = parse_boolean(value)) < 0)
833 log_debug("Failed to parse failure value %s", value);
834 else
835 m->failure = b || m->failure;
836
837 } else if (streq(key, "control-pid")) {
838 unsigned pid;
839
840 if ((r = safe_atou(value, &pid)) < 0 || pid <= 0)
841 log_debug("Failed to parse control-pid value %s", value);
842 else
843 m->control_pid = (pid_t) pid;
844 } else if (streq(key, "control-command")) {
845 MountExecCommand id;
846
847 if ((id = mount_exec_command_from_string(value)) < 0)
848 log_debug("Failed to parse exec-command value %s", value);
849 else {
850 m->control_command_id = id;
851 m->control_command = m->exec_command + id;
852 }
853
854 } else
855 log_debug("Unknown serialization key '%s'", key);
856
857 return 0;
858}
859
e537352b
LP		 860static UnitActiveState mount_active_state(Unit *u) {
861 assert(u);
862
863 return state_translation_table[MOUNT(u)->state];
864}
865
10a94420
LP		 866static const char *mount_sub_state_to_string(Unit *u) {
867 assert(u);
868
a16e1123 869 return mount_state_to_string(MOUNT(u)->state);
10a94420
LP		 870}
871
701cc384
LP		 872static bool mount_check_gc(Unit *u) {
873 Mount *m = MOUNT(u);
874
875 assert(m);
876
877 return m->from_etc_fstab || m->from_proc_self_mountinfo;
878}
879
e537352b
LP		 880static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) {
881 Mount *m = MOUNT(u);
882 bool success;
883
884 assert(m);
885 assert(pid >= 0);
886
887 success = code == CLD_EXITED && status == 0;
888 m->failure = m->failure || !success;
889
890 assert(m->control_pid == pid);
e537352b
LP		 891 m->control_pid = 0;
892
a16e1123
LP		 893 if (m->control_command) {
894 exec_status_fill(&m->control_command->exec_status, pid, code, status);
895 m->control_command = NULL;
896 m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
897 }
898
9e2f7c11 899 log_debug("%s control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
e537352b
LP		 900
901 /* Note that mount(8) returning and the kernel sending us a
902 * mount table change event might happen out-of-order. If an
903 * operation succeed we assume the kernel will follow soon too
904 * and already change into the resulting state. If it fails
905 * we check if the kernel still knows about the mount. and
906 * change state accordingly. */
907
908 switch (m->state) {
909
910 case MOUNT_MOUNTING:
911 case MOUNT_MOUNTING_DONE:
912 case MOUNT_MOUNTING_SIGKILL:
913 case MOUNT_MOUNTING_SIGTERM:
914 case MOUNT_REMOUNTING:
915 case MOUNT_REMOUNTING_SIGKILL:
916 case MOUNT_REMOUNTING_SIGTERM:
917
918 if (success && m->from_proc_self_mountinfo)
919 mount_enter_mounted(m, true);
920 else if (m->from_proc_self_mountinfo)
921 mount_enter_mounted(m, false);
922 else
923 mount_enter_dead(m, false);
924 break;
925
926 case MOUNT_UNMOUNTING:
927 case MOUNT_UNMOUNTING_SIGKILL:
928 case MOUNT_UNMOUNTING_SIGTERM:
929
930 if (success)
931 mount_enter_dead(m, true);
932 else if (m->from_proc_self_mountinfo)
933 mount_enter_mounted(m, false);
934 else
935 mount_enter_dead(m, false);
936 break;
937
938 default:
939 assert_not_reached("Uh, control process died at wrong time.");
940 }
941}
942
943static void mount_timer_event(Unit *u, uint64_t elapsed, Watch *w) {
944 Mount *m = MOUNT(u);
945
946 assert(m);
947 assert(elapsed == 1);
948 assert(w == &m->timer_watch);
949
950 switch (m->state) {
951
952 case MOUNT_MOUNTING:
953 case MOUNT_MOUNTING_DONE:
9e2f7c11 954 log_warning("%s mounting timed out. Stopping.", u->meta.id);
e537352b
LP		 955 mount_enter_signal(m, MOUNT_MOUNTING_SIGTERM, false);
956 break;
957
958 case MOUNT_REMOUNTING:
9e2f7c11 959 log_warning("%s remounting timed out. Stopping.", u->meta.id);
e537352b
LP		 960 mount_enter_signal(m, MOUNT_REMOUNTING_SIGTERM, false);
961 break;
962
963 case MOUNT_UNMOUNTING:
9e2f7c11 964 log_warning("%s unmounting timed out. Stopping.", u->meta.id);
e537352b
LP		 965 mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, false);
966 break;
967
968 case MOUNT_MOUNTING_SIGTERM:
9e2f7c11 969 log_warning("%s mounting timed out. Killing.", u->meta.id);
e537352b
LP		 970 mount_enter_signal(m, MOUNT_MOUNTING_SIGKILL, false);
971 break;
972
973 case MOUNT_REMOUNTING_SIGTERM:
9e2f7c11 974 log_warning("%s remounting timed out. Killing.", u->meta.id);
e537352b
LP		 975 mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, false);
976 break;
977
978 case MOUNT_UNMOUNTING_SIGTERM:
9e2f7c11 979 log_warning("%s unmounting timed out. Killing.", u->meta.id);
e537352b
LP		 980 mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, false);
981 break;
982
983 case MOUNT_MOUNTING_SIGKILL:
984 case MOUNT_REMOUNTING_SIGKILL:
985 case MOUNT_UNMOUNTING_SIGKILL:
9e2f7c11 986 log_warning("%s mount process still around after SIGKILL. Ignoring.", u->meta.id);
e537352b
LP		 987
988 if (m->from_proc_self_mountinfo)
989 mount_enter_mounted(m, false);
990 else
991 mount_enter_dead(m, false);
992 break;
993
994 default:
995 assert_not_reached("Timeout at wrong time.");
996 }
997}
998
999static int mount_add_one(
1000 Manager *m,
1001 const char *what,
1002 const char *where,
1003 const char *options,
1004 const char *fstype,
1005 bool from_proc_self_mountinfo,
1006 bool set_flags) {
b08d03ff
LP		 1007 int r;
1008 Unit *u;
1009 bool delete;
e537352b
LP		 1010 char *e, *w = NULL, *o = NULL, *f = NULL;
1011 MountParameters *mp;
b08d03ff 1012
f50e0a01 1013 assert(m);
b08d03ff
LP		 1014 assert(what);
1015 assert(where);
e537352b
LP		 1016 assert(options);
1017 assert(fstype);
1018
1019 assert(!set_flags || from_proc_self_mountinfo);
1020
1021 /* Ignore API mount points. They should never be referenced in
1022 * dependencies ever. */
1023 if (mount_point_is_api(where))
1024 return 0;
b08d03ff 1025
8d567588
LP		 1026 if (streq(fstype, "autofs"))
1027 return 0;
1028
b08d03ff
LP		 1029 /* probably some kind of swap, which we don't cover for now */
1030 if (where[0] != '/')
1031 return 0;
1032
a16e1123 1033 if (!(e = unit_name_from_path(where, ".mount")))
b08d03ff
LP		 1034 return -ENOMEM;
1035
1036 if (!(u = manager_get_unit(m, e))) {
1037 delete = true;
1038
1039 if (!(u = unit_new(m))) {
1040 free(e);
1041 return -ENOMEM;
1042 }
1043
1044 r = unit_add_name(u, e);
1045 free(e);
1046
1047 if (r < 0)
1048 goto fail;
1049
e537352b 1050 if (!(MOUNT(u)->where = strdup(where))) {
07b0b134
ML		 1051 r = -ENOMEM;
1052 goto fail;
1053 }
f50e0a01
LP		 1054
1055 if ((r = unit_set_description(u, where)) < 0)
b08d03ff 1056 goto fail;
ef734fd6 1057
f94ea366 1058 unit_add_to_load_queue(u);
b08d03ff
LP		 1059 } else {
1060 delete = false;
1061 free(e);
1062 }
1063
e537352b
LP		 1064 if (!(w = strdup(what)) ||
1065 !(o = strdup(options)) ||
1066 !(f = strdup(fstype))) {
1067 r = -ENOMEM;
1068 goto fail;
1069 }
1070
1071 if (from_proc_self_mountinfo) {
1072 mp = &MOUNT(u)->parameters_proc_self_mountinfo;
1073
1074 if (set_flags) {
1075 MOUNT(u)->is_mounted = true;
1076 MOUNT(u)->just_mounted = !MOUNT(u)->from_proc_self_mountinfo;
1077 MOUNT(u)->just_changed = !streq_ptr(MOUNT(u)->parameters_proc_self_mountinfo.options, o);
1078 }
ef734fd6 1079
f50e0a01 1080 MOUNT(u)->from_proc_self_mountinfo = true;
e537352b 1081
ef734fd6 1082 } else {
e537352b
LP		 1083 mp = &MOUNT(u)->parameters_etc_fstab;
1084
f50e0a01 1085 MOUNT(u)->from_etc_fstab = true;
ef734fd6 1086 }
f50e0a01 1087
e537352b
LP		 1088 free(mp->what);
1089 mp->what = w;
b08d03ff 1090
e537352b
LP		 1091 free(mp->options);
1092 mp->options = o;
1093
1094 free(mp->fstype);
1095 mp->fstype = f;
b08d03ff 1096
c1e1601e
LP		 1097 unit_add_to_dbus_queue(u);
1098
b08d03ff
LP		 1099 return 0;
1100
1101fail:
e537352b
LP		 1102 free(w);
1103 free(o);
1104 free(f);
1105
b08d03ff
LP		 1106 if (delete && u)
1107 unit_free(u);
1108
1109 return 0;
1110}
1111
1112static char *fstab_node_to_udev_node(char *p) {
1113 char *dn, *t;
1114 int r;
1115
1116 /* FIXME: to follow udev's logic 100% we need to leave valid
1117 * UTF8 chars unescaped */
1118
1119 if (startswith(p, "LABEL=")) {
1120
f50e0a01 1121 if (!(t = xescape(p+6, "/ ")))
b08d03ff
LP		 1122 return NULL;
1123
f50e0a01 1124 r = asprintf(&dn, "/dev/disk/by-label/%s", t);
b08d03ff
LP		 1125 free(t);
1126
1127 if (r < 0)
1128 return NULL;
1129
1130 return dn;
1131 }
1132
1133 if (startswith(p, "UUID=")) {
1134
f50e0a01 1135 if (!(t = xescape(p+5, "/ ")))
b08d03ff
LP		 1136 return NULL;
1137
f50e0a01 1138 r = asprintf(&dn, "/dev/disk/by-uuid/%s", ascii_strlower(t));
b08d03ff
LP		 1139 free(t);
1140
1141 if (r < 0)
1142 return NULL;
1143
1144 return dn;
1145 }
1146
1147 return strdup(p);
1148}
1149
07b0b134
ML		 1150static int mount_find_pri(char *options) {
1151 char *end, *pri;
1152 unsigned long r;
1153
1154 if (!(pri = mount_test_option(options, "pri=")))
1155 return 0;
1156
1157 pri += 4;
1158
1159 errno = 0;
1160 r = strtoul(pri, &end, 10);
1161
1162 if (errno != 0)
1163 return -errno;
1164
1165 if (end == pri || (*end != ',' && *end != 0))
1166 return -EINVAL;
1167
1168 return (int) r;
1169}
1170
e537352b 1171static int mount_load_etc_fstab(Manager *m) {
b08d03ff
LP		 1172 FILE *f;
1173 int r;
1174 struct mntent* me;
1175
1176 assert(m);
1177
1178 errno = 0;
1179 if (!(f = setmntent("/etc/fstab", "r")))
1180 return -errno;
1181
1182 while ((me = getmntent(f))) {
1183 char *where, *what;
1184
1185 if (!(what = fstab_node_to_udev_node(me->mnt_fsname))) {
1186 r = -ENOMEM;
1187 goto finish;
1188 }
1189
1190 if (!(where = strdup(me->mnt_dir))) {
1191 free(what);
1192 r = -ENOMEM;
1193 goto finish;
1194 }
1195
1196 if (what[0] == '/')
1197 path_kill_slashes(what);
1198
1199 if (where[0] == '/')
1200 path_kill_slashes(where);
1201
07b0b134
ML		 1202 if (streq(me->mnt_type, "swap")) {
1203 int pri;
1204
1205 if ((pri = mount_find_pri(me->mnt_opts)) < 0)
1206 r = pri;
1207 else
1208 r = swap_add_one(m,
1209 what,
1210 !!mount_test_option(me->mnt_opts, MNTOPT_NOAUTO),
1211 pri,
1212 false);
1213 } else
1214 r = mount_add_one(m, what, where, me->mnt_opts, me->mnt_type, false, false);
1215
b08d03ff
LP		 1216 free(what);
1217 free(where);
1218
1219 if (r < 0)
1220 goto finish;
1221 }
1222
1223 r = 0;
1224finish:
1225
1226 endmntent(f);
1227 return r;
1228}
1229
ef734fd6 1230static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) {
b08d03ff 1231 int r;
e537352b 1232 char *device, *path, *options, *fstype, *d, *p;
b08d03ff
LP		 1233
1234 assert(m);
1235
ef734fd6 1236 rewind(m->proc_self_mountinfo);
b08d03ff
LP		 1237
1238 for (;;) {
1239 int k;
e537352b
LP		 1240
1241 device = path = options = fstype = d = p = NULL;
b08d03ff 1242
ef734fd6 1243 if ((k = fscanf(m->proc_self_mountinfo,
b08d03ff
LP		 1244 "%*s " /* (1) mount id */
1245 "%*s " /* (2) parent id */
1246 "%*s " /* (3) major:minor */
1247 "%*s " /* (4) root */
1248 "%ms " /* (5) mount point */
e537352b 1249 "%ms" /* (6) mount options */
b08d03ff
LP		 1250 "%*[^-]" /* (7) optional fields */
1251 "- " /* (8) seperator */
e537352b 1252 "%ms " /* (9) file system type */
ef734fd6
LP		 1253 "%ms" /* (10) mount source */
1254 "%*[^\n]", /* some rubbish at the end */
b08d03ff 1255 &path,
e537352b
LP		 1256 &options,
1257 &fstype,
1258 &device)) != 4) {
b08d03ff 1259
ef734fd6
LP		 1260 if (k == EOF)
1261 break;
b08d03ff 1262
e537352b
LP		 1263 r = -EBADMSG;
1264 goto finish;
b08d03ff
LP		 1265 }
1266
e537352b
LP		 1267 if (!(d = cunescape(device)) ||
1268 !(p = cunescape(path))) {
1269 r = -ENOMEM;
1270 goto finish;
b08d03ff 1271 }
b08d03ff 1272
e537352b
LP		 1273 if ((r = mount_add_one(m, d, p, options, fstype, true, set_flags)) < 0)
1274 goto finish;
b08d03ff 1275
e537352b
LP		 1276 free(device);
1277 free(path);
1278 free(options);
1279 free(fstype);
b08d03ff
LP		 1280 free(d);
1281 free(p);
b08d03ff
LP		 1282 }
1283
e537352b
LP		 1284 r = 0;
1285
1286finish:
1287 free(device);
1288 free(path);
1289 free(options);
1290 free(fstype);
1291 free(d);
1292 free(p);
1293
1294 return r;
1295}
1296
1297static void mount_shutdown(Manager *m) {
1298 assert(m);
1299
a16e1123 1300 if (m->proc_self_mountinfo) {
e537352b 1301 fclose(m->proc_self_mountinfo);
a16e1123
LP		 1302 m->proc_self_mountinfo = NULL;
1303 }
b08d03ff
LP		 1304}
1305
1306static int mount_enumerate(Manager *m) {
1307 int r;
ef734fd6 1308 struct epoll_event ev;
b08d03ff
LP		 1309 assert(m);
1310
a16e1123
LP		 1311 if (!m->proc_self_mountinfo) {
1312 if (!(m->proc_self_mountinfo = fopen("/proc/self/mountinfo", "re")))
1313 return -errno;
ef734fd6 1314
a16e1123
LP		 1315 m->mount_watch.type = WATCH_MOUNT;
1316 m->mount_watch.fd = fileno(m->proc_self_mountinfo);
ef734fd6 1317
a16e1123
LP		 1318 zero(ev);
1319 ev.events = EPOLLERR;
1320 ev.data.ptr = &m->mount_watch;
ef734fd6 1321
a16e1123
LP		 1322 if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->mount_watch.fd, &ev) < 0)
1323 return -errno;
1324 }
ef734fd6 1325
e537352b 1326 if ((r = mount_load_etc_fstab(m)) < 0)
b08d03ff
LP		 1327 goto fail;
1328
ef734fd6 1329 if ((r = mount_load_proc_self_mountinfo(m, false)) < 0)
b08d03ff
LP		 1330 goto fail;
1331
1332 return 0;
1333
1334fail:
1335 mount_shutdown(m);
1336 return r;
5cb5a6ff
LP		 1337}
1338
ef734fd6
LP		 1339void mount_fd_event(Manager *m, int events) {
1340 Meta *meta;
1341 int r;
1342
1343 assert(m);
f94ea366 1344 assert(events == EPOLLERR);
ef734fd6
LP		 1345
1346 /* The manager calls this for every fd event happening on the
1347 * /proc/self/mountinfo file, which informs us about mounting
1348 * table changes */
1349
1350 if ((r = mount_load_proc_self_mountinfo(m, true)) < 0) {
1351 log_error("Failed to reread /proc/self/mountinfo: %s", strerror(-errno));
e537352b
LP		 1352
1353 /* Reset flags, just in case, for later calls */
1354 LIST_FOREACH(units_per_type, meta, m->units_per_type[UNIT_MOUNT]) {
1355 Mount *mount = (Mount*) meta;
1356
1357 mount->is_mounted = mount->just_mounted = mount->just_changed = false;
1358 }
1359
ef734fd6
LP		 1360 return;
1361 }
1362
1363 manager_dispatch_load_queue(m);
1364
1365 LIST_FOREACH(units_per_type, meta, m->units_per_type[UNIT_MOUNT]) {
1366 Mount *mount = (Mount*) meta;
1367
e537352b
LP		 1368 if (!mount->is_mounted) {
1369 /* This has just been unmounted. */
1370
ef734fd6 1371 mount->from_proc_self_mountinfo = false;
e537352b
LP		 1372
1373 switch (mount->state) {
1374
1375 case MOUNT_MOUNTED:
1376 mount_enter_dead(mount, true);
1377 break;
1378
1379 default:
1380 mount_set_state(mount, mount->state);
1381 break;
1382
1383 }
1384
1385 } else if (mount->just_mounted || mount->just_changed) {
1386
1387 /* New or changed entrymount */
1388
1389 switch (mount->state) {
1390
1391 case MOUNT_DEAD:
1392 case MOUNT_MAINTAINANCE:
1393 mount_enter_mounted(mount, true);
1394 break;
1395
1396 case MOUNT_MOUNTING:
8d567588 1397 mount_enter_mounting_done(mount);
e537352b
LP		 1398 break;
1399
1400 default:
1401 /* Nothing really changed, but let's
1402 * issue an notification call
1403 * nonetheless, in case somebody is
1404 * waiting for this. (e.g. file system
1405 * ro/rw remounts.) */
1406 mount_set_state(mount, mount->state);
1407 break;
1408 }
1409 }
1410
1411 /* Reset the flags for later calls */
1412 mount->is_mounted = mount->just_mounted = mount->just_changed = false;
1413 }
1414}
1415
1416int mount_path_is_mounted(Manager *m, const char* path) {
1417 char *t;
1418 int r;
1419
1420 assert(m);
1421 assert(path);
1422
1423 if (path[0] != '/')
1424 return 1;
1425
1426 if (!(t = strdup(path)))
1427 return -ENOMEM;
1428
1429 path_kill_slashes(t);
1430
1431 for (;;) {
1432 char *e, *slash;
1433 Unit *u;
1434
a16e1123 1435 if (!(e = unit_name_from_path(t, ".mount"))) {
e537352b
LP		 1436 r = -ENOMEM;
1437 goto finish;
1438 }
1439
1440 u = manager_get_unit(m, e);
1441 free(e);
1442
1443 if (u &&
1444 (MOUNT(u)->from_etc_fstab || MOUNT(u)->from_fragment) &&
1445 MOUNT(u)->state != MOUNT_MOUNTED) {
1446 r = 0;
1447 goto finish;
ef734fd6
LP		 1448 }
1449
e537352b
LP		 1450 assert_se(slash = strrchr(t, '/'));
1451
1452 if (slash == t) {
1453 r = 1;
1454 goto finish;
1455 }
1456
1457 *slash = 0;
ef734fd6 1458 }
e537352b
LP		 1459
1460 r = 1;
1461
1462finish:
1463 free(t);
1464 return r;
ef734fd6
LP		 1465}
1466
a16e1123
LP		 1467static const char* const mount_state_table[_MOUNT_STATE_MAX] = {
1468 [MOUNT_DEAD] = "dead",
1469 [MOUNT_MOUNTING] = "mounting",
1470 [MOUNT_MOUNTING_DONE] = "mounting-done",
1471 [MOUNT_MOUNTED] = "mounted",
1472 [MOUNT_REMOUNTING] = "remounting",
1473 [MOUNT_UNMOUNTING] = "unmounting",
1474 [MOUNT_MOUNTING_SIGTERM] = "mounting-sigterm",
1475 [MOUNT_MOUNTING_SIGKILL] = "mounting-sigkill",
1476 [MOUNT_REMOUNTING_SIGTERM] = "remounting-sigterm",
1477 [MOUNT_REMOUNTING_SIGKILL] = "remounting-sigkill",
1478 [MOUNT_UNMOUNTING_SIGTERM] = "unmounting-sigterm",
1479 [MOUNT_UNMOUNTING_SIGKILL] = "unmounting-sigkill",
1480 [MOUNT_MAINTAINANCE] = "maintainance"
1481};
1482
1483DEFINE_STRING_TABLE_LOOKUP(mount_state, MountState);
1484
1485static const char* const mount_exec_command_table[_MOUNT_EXEC_COMMAND_MAX] = {
1486 [MOUNT_EXEC_MOUNT] = "ExecMount",
1487 [MOUNT_EXEC_UNMOUNT] = "ExecUnmount",
1488 [MOUNT_EXEC_REMOUNT] = "ExecRemount",
1489};
1490
1491DEFINE_STRING_TABLE_LOOKUP(mount_exec_command, MountExecCommand);
1492
87f0e418 1493const UnitVTable mount_vtable = {
5cb5a6ff
LP		 1494 .suffix = ".mount",
1495
e537352b 1496 .no_alias = true,
9e2f7c11 1497 .no_instances = true,
c497c7a9 1498 .no_isolate = true,
e537352b
LP		 1499
1500 .init = mount_init,
1501 .load = mount_load,
034c6ed7 1502 .done = mount_done,
e537352b 1503
f50e0a01
LP		 1504 .coldplug = mount_coldplug,
1505
034c6ed7 1506 .dump = mount_dump,
5cb5a6ff 1507
e537352b
LP		 1508 .start = mount_start,
1509 .stop = mount_stop,
1510 .reload = mount_reload,
1511
a16e1123
LP		 1512 .serialize = mount_serialize,
1513 .deserialize_item = mount_deserialize_item,
1514
f50e0a01 1515 .active_state = mount_active_state,
10a94420 1516 .sub_state_to_string = mount_sub_state_to_string,
b08d03ff 1517
701cc384
LP		 1518 .check_gc = mount_check_gc,
1519
e537352b
LP		 1520 .sigchld_event = mount_sigchld_event,
1521 .timer_event = mount_timer_event,
1522
4139c1b2
LP		 1523 .bus_message_handler = bus_mount_message_handler,
1524
f50e0a01
LP		 1525 .enumerate = mount_enumerate,
1526 .shutdown = mount_shutdown
5cb5a6ff 1527};
Michael's branch of systemd.