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unit: shorten active state enums to make systemctl output nicer
[thirdparty/systemd.git] / src / 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"
514f4ef5 38#include "special.h"
5cb5a6ff 39
f50e0a01
LP		 40static const UnitActiveState state_translation_table[_MOUNT_STATE_MAX] = {
41 [MOUNT_DEAD] = UNIT_INACTIVE,
42 [MOUNT_MOUNTING] = UNIT_ACTIVATING,
e537352b 43 [MOUNT_MOUNTING_DONE] = UNIT_ACTIVE,
f50e0a01 44 [MOUNT_MOUNTED] = UNIT_ACTIVE,
032ff4af 45 [MOUNT_REMOUNTING] = UNIT_RELOADING,
f50e0a01 46 [MOUNT_UNMOUNTING] = UNIT_DEACTIVATING,
e537352b
LP		 47 [MOUNT_MOUNTING_SIGTERM] = UNIT_DEACTIVATING,
48 [MOUNT_MOUNTING_SIGKILL] = UNIT_DEACTIVATING,
032ff4af
LP		 49 [MOUNT_REMOUNTING_SIGTERM] = UNIT_RELOADING,
50 [MOUNT_REMOUNTING_SIGKILL] = UNIT_RELOADING,
e537352b
LP		 51 [MOUNT_UNMOUNTING_SIGTERM] = UNIT_DEACTIVATING,
52 [MOUNT_UNMOUNTING_SIGKILL] = UNIT_DEACTIVATING,
032ff4af 53 [MOUNT_MAINTENANCE] = UNIT_MAINTENANCE
f50e0a01 54};
5cb5a6ff 55
a16e1123
LP		 56static void mount_init(Unit *u) {
57 Mount *m = MOUNT(u);
5cb5a6ff 58
a16e1123
LP		 59 assert(u);
60 assert(u->meta.load_state == UNIT_STUB);
61
62 m->timeout_usec = DEFAULT_TIMEOUT_USEC;
63 exec_context_init(&m->exec_context);
8d567588 64
a16e1123
LP		 65 /* We need to make sure that /bin/mount is always called in
66 * the same process group as us, so that the autofs kernel
67 * side doesn't send us another mount request while we are
68 * already trying to comply its last one. */
69 m->exec_context.no_setsid = true;
8d567588 70
a16e1123
LP		 71 m->timer_watch.type = WATCH_INVALID;
72
73 m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
8d567588
LP		 74}
75
a16e1123 76static void mount_unwatch_control_pid(Mount *m) {
5e94833f
LP		 77 assert(m);
78
79 if (m->control_pid <= 0)
80 return;
81
82 unit_unwatch_pid(UNIT(m), m->control_pid);
83 m->control_pid = 0;
84}
85
e537352b
LP		 86static void mount_parameters_done(MountParameters *p) {
87 assert(p);
88
89 free(p->what);
90 free(p->options);
91 free(p->fstype);
92
93 p->what = p->options = p->fstype = NULL;
94}
95
87f0e418 96static void mount_done(Unit *u) {
ef734fd6 97 Mount *m = MOUNT(u);
034c6ed7 98
ef734fd6 99 assert(m);
034c6ed7 100
e537352b
LP		 101 free(m->where);
102 m->where = NULL;
f50e0a01 103
e537352b
LP		 104 mount_parameters_done(&m->parameters_etc_fstab);
105 mount_parameters_done(&m->parameters_proc_self_mountinfo);
106 mount_parameters_done(&m->parameters_fragment);
ef734fd6 107
e537352b
LP		 108 exec_context_done(&m->exec_context);
109 exec_command_done_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX);
110 m->control_command = NULL;
f50e0a01 111
a16e1123 112 mount_unwatch_control_pid(m);
f50e0a01 113
e537352b 114 unit_unwatch_timer(u, &m->timer_watch);
f50e0a01
LP		 115}
116
6e2ef85b
LP		 117static int mount_add_mount_links(Mount *m) {
118 Meta *other;
b08d03ff
LP		 119 int r;
120
6e2ef85b 121 assert(m);
b08d03ff 122
6e2ef85b
LP		 123 /* Adds in links to other mount points that might lie below or
124 * above us in the hierarchy */
e537352b 125
6e2ef85b
LP		 126 LIST_FOREACH(units_per_type, other, m->meta.manager->units_per_type[UNIT_MOUNT]) {
127 Mount *n = (Mount*) other;
07b0b134 128
6e2ef85b
LP		 129 if (n == m)
130 continue;
b08d03ff 131
6e2ef85b
LP		 132 if (n->meta.load_state != UNIT_LOADED)
133 continue;
b08d03ff 134
6e2ef85b 135 if (path_startswith(m->where, n->where)) {
b08d03ff 136
6e2ef85b
LP		 137 if ((r = unit_add_dependency(UNIT(m), UNIT_AFTER, UNIT(n), true)) < 0)
138 return r;
b08d03ff 139
6e2ef85b
LP		 140 if (n->from_etc_fstab || n->from_fragment)
141 if ((r = unit_add_dependency(UNIT(m), UNIT_REQUIRES, UNIT(n), true)) < 0)
142 return r;
b08d03ff 143
6e2ef85b 144 } else if (path_startswith(n->where, m->where)) {
b08d03ff 145
6e2ef85b
LP		 146 if ((r = unit_add_dependency(UNIT(m), UNIT_BEFORE, UNIT(n), true)) < 0)
147 return r;
148
149 if (m->from_etc_fstab || m->from_fragment)
150 if ((r = unit_add_dependency(UNIT(n), UNIT_REQUIRES, UNIT(m), true)) < 0)
151 return r;
152 }
153 }
b08d03ff
LP		 154
155 return 0;
156}
157
6e2ef85b 158static int mount_add_swap_links(Mount *m) {
ef734fd6 159 Meta *other;
b08d03ff
LP		 160 int r;
161
6e2ef85b 162 assert(m);
b08d03ff 163
6e2ef85b
LP		 164 LIST_FOREACH(units_per_type, other, m->meta.manager->units_per_type[UNIT_SWAP])
165 if ((r = swap_add_one_mount_link((Swap*) other, m)) < 0)
166 return r;
b08d03ff 167
6e2ef85b
LP		 168 return 0;
169}
b08d03ff 170
01f78473
LP		 171static int mount_add_path_links(Mount *m) {
172 Meta *other;
173 int r;
174
175 assert(m);
176
177 LIST_FOREACH(units_per_type, other, m->meta.manager->units_per_type[UNIT_PATH])
178 if ((r = path_add_one_mount_link((Path*) other, m)) < 0)
179 return r;
180
181 return 0;
182}
183
6e2ef85b
LP		 184static int mount_add_automount_links(Mount *m) {
185 Meta *other;
186 int r;
e537352b 187
6e2ef85b 188 assert(m);
b08d03ff 189
6e2ef85b
LP		 190 LIST_FOREACH(units_per_type, other, m->meta.manager->units_per_type[UNIT_AUTOMOUNT])
191 if ((r = automount_add_one_mount_link((Automount*) other, m)) < 0)
192 return r;
b08d03ff 193
6e2ef85b
LP		 194 return 0;
195}
b08d03ff 196
6e2ef85b
LP		 197static int mount_add_socket_links(Mount *m) {
198 Meta *other;
199 int r;
b08d03ff 200
6e2ef85b 201 assert(m);
b08d03ff 202
6e2ef85b
LP		 203 LIST_FOREACH(units_per_type, other, m->meta.manager->units_per_type[UNIT_SOCKET])
204 if ((r = socket_add_one_mount_link((Socket*) other, m)) < 0)
205 return r;
b08d03ff
LP		 206
207 return 0;
208}
209
07b0b134 210static char* mount_test_option(const char *haystack, const char *needle) {
e537352b
LP		 211 struct mntent me;
212
213 assert(needle);
214
215 /* Like glibc's hasmntopt(), but works on a string, not a
216 * struct mntent */
217
218 if (!haystack)
219 return false;
220
221 zero(me);
222 me.mnt_opts = (char*) haystack;
223
07b0b134 224 return hasmntopt(&me, needle);
e537352b
LP		 225}
226
227static int mount_add_target_links(Mount *m) {
228 const char *target;
229 MountParameters *p;
a16e1123 230 Unit *tu;
e537352b 231 int r;
307e85ef 232 bool noauto, handle, automount, user;
e537352b
LP		 233
234 assert(m);
235
236 if (m->from_fragment)
237 p = &m->parameters_fragment;
238 else if (m->from_etc_fstab)
239 p = &m->parameters_etc_fstab;
240 else
241 return 0;
242
07b0b134 243 noauto = !!mount_test_option(p->options, MNTOPT_NOAUTO);
307e85ef 244 user = mount_test_option(p->options, "user") || mount_test_option(p->options, "users");
07b0b134
ML		 245 handle = !!mount_test_option(p->options, "comment=systemd.mount");
246 automount = !!mount_test_option(p->options, "comment=systemd.automount");
e537352b 247
e537352b
LP		 248 if (mount_test_option(p->options, "_netdev") ||
249 fstype_is_network(p->fstype))
250 target = SPECIAL_REMOTE_FS_TARGET;
251 else
252 target = SPECIAL_LOCAL_FS_TARGET;
253
4cd1fbcc 254 if ((r = manager_load_unit(m->meta.manager, target, NULL, &tu)) < 0)
e537352b
LP		 255 return r;
256
a3d4e06d 257 if (automount && m->meta.manager->running_as == MANAGER_SYSTEM) {
a16e1123
LP		 258 Unit *am;
259
260 if ((r = unit_load_related_unit(UNIT(m), ".automount", &am)) < 0)
9fcc065a 261 return r;
e537352b 262
701cc384 263 if ((r = unit_add_dependency(tu, UNIT_WANTS, UNIT(am), true)) < 0)
a16e1123
LP		 264 return r;
265
701cc384 266 return unit_add_dependency(UNIT(am), UNIT_BEFORE, tu, true);
a16e1123
LP		 267
268 } else {
269
4e85aff4 270 if (!noauto && handle)
a3d4e06d 271 if (user || m->meta.manager->running_as == MANAGER_SYSTEM)
307e85ef
LP		 272 if ((r = unit_add_dependency(tu, UNIT_WANTS, UNIT(m), true)) < 0)
273 return r;
a16e1123 274
701cc384 275 return unit_add_dependency(UNIT(m), UNIT_BEFORE, tu, true);
a16e1123 276 }
e537352b
LP		 277}
278
8d567588
LP		 279static int mount_verify(Mount *m) {
280 bool b;
281 char *e;
282 assert(m);
283
8cbef760 284 if (m->meta.load_state != UNIT_LOADED)
8d567588
LP		 285 return 0;
286
8cbef760
LP		 287 if (!m->from_etc_fstab && !m->from_fragment && !m->from_proc_self_mountinfo)
288 return -ENOENT;
289
a16e1123 290 if (!(e = unit_name_from_path(m->where, ".mount")))
8d567588
LP		 291 return -ENOMEM;
292
293 b = unit_has_name(UNIT(m), e);
294 free(e);
295
296 if (!b) {
4cd1fbcc 297 log_error("%s's Where setting doesn't match unit name. Refusing.", m->meta.id);
8d567588
LP		 298 return -EINVAL;
299 }
300
4e85aff4 301 if (m->meta.fragment_path && !m->parameters_fragment.what) {
4cd1fbcc 302 log_error("%s's What setting is missing. Refusing.", m->meta.id);
4e85aff4
LP		 303 return -EBADMSG;
304 }
305
4d0e5dbd
LP		 306 if (m->exec_context.pam_name && m->kill_mode != KILL_CONTROL_GROUP) {
307 log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", m->meta.id);
308 return -EINVAL;
309 }
310
8d567588
LP		 311 return 0;
312}
313
e537352b
LP		 314static int mount_load(Unit *u) {
315 Mount *m = MOUNT(u);
316 int r;
317
318 assert(u);
319 assert(u->meta.load_state == UNIT_STUB);
320
321 if ((r = unit_load_fragment_and_dropin_optional(u)) < 0)
322 return r;
323
324 /* This is a new unit? Then let's add in some extras */
325 if (u->meta.load_state == UNIT_LOADED) {
4e85aff4 326 const char *what = NULL;
6e2ef85b 327
4e85aff4
LP		 328 if (m->meta.fragment_path)
329 m->from_fragment = true;
e537352b 330
a16e1123
LP		 331 if (!m->where)
332 if (!(m->where = unit_name_to_path(u->meta.id)))
333 return -ENOMEM;
334
335 path_kill_slashes(m->where);
336
4e85aff4
LP		 337 if (!m->meta.description)
338 if ((r = unit_set_description(u, m->where)) < 0)
339 return r;
e537352b 340
4e85aff4
LP		 341 if (m->from_fragment && m->parameters_fragment.what)
342 what = m->parameters_fragment.what;
343 else if (m->from_etc_fstab && m->parameters_etc_fstab.what)
344 what = m->parameters_etc_fstab.what;
345 else if (m->from_proc_self_mountinfo && m->parameters_proc_self_mountinfo.what)
346 what = m->parameters_proc_self_mountinfo.what;
e537352b 347
4e85aff4 348 if (what)
a3d4e06d 349 if ((r = unit_add_node_link(u, what, u->meta.manager->running_as == MANAGER_SYSTEM)) < 0)
4e85aff4 350 return r;
6e2ef85b
LP		 351
352 if ((r = mount_add_mount_links(m)) < 0)
353 return r;
354
355 if ((r = mount_add_socket_links(m)) < 0)
356 return r;
357
358 if ((r = mount_add_swap_links(m)) < 0)
e537352b
LP		 359 return r;
360
01f78473
LP		 361 if ((r = mount_add_path_links(m)) < 0)
362 return r;
363
6e2ef85b 364 if ((r = mount_add_automount_links(m)) < 0)
e537352b
LP		 365 return r;
366
6e2ef85b 367 if ((r = mount_add_target_links(m)) < 0)
e537352b
LP		 368 return r;
369
370 if ((r = unit_add_default_cgroup(u)) < 0)
371 return r;
372 }
373
8d567588 374 return mount_verify(m);
e537352b
LP		 375}
376
a16e1123
LP		 377static int mount_notify_automount(Mount *m, int status) {
378 Unit *p;
379 int r;
380
381 assert(m);
382
383 if ((r = unit_get_related_unit(UNIT(m), ".automount", &p)) < 0)
384 return r == -ENOENT ? 0 : r;
385
386 return automount_send_ready(AUTOMOUNT(p), status);
387}
388
e537352b
LP		 389static void mount_set_state(Mount *m, MountState state) {
390 MountState old_state;
391 assert(m);
392
393 old_state = m->state;
394 m->state = state;
395
396 if (state != MOUNT_MOUNTING &&
397 state != MOUNT_MOUNTING_DONE &&
398 state != MOUNT_REMOUNTING &&
399 state != MOUNT_UNMOUNTING &&
400 state != MOUNT_MOUNTING_SIGTERM &&
401 state != MOUNT_MOUNTING_SIGKILL &&
402 state != MOUNT_UNMOUNTING_SIGTERM &&
403 state != MOUNT_UNMOUNTING_SIGKILL &&
404 state != MOUNT_REMOUNTING_SIGTERM &&
405 state != MOUNT_REMOUNTING_SIGKILL) {
406 unit_unwatch_timer(UNIT(m), &m->timer_watch);
a16e1123 407 mount_unwatch_control_pid(m);
e537352b 408 m->control_command = NULL;
a16e1123 409 m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
e537352b
LP		 410 }
411
8d567588
LP		 412 if (state == MOUNT_MOUNTED ||
413 state == MOUNT_REMOUNTING)
414 mount_notify_automount(m, 0);
415 else if (state == MOUNT_DEAD ||
416 state == MOUNT_UNMOUNTING ||
417 state == MOUNT_MOUNTING_SIGTERM ||
418 state == MOUNT_MOUNTING_SIGKILL ||
419 state == MOUNT_REMOUNTING_SIGTERM ||
420 state == MOUNT_REMOUNTING_SIGKILL ||
421 state == MOUNT_UNMOUNTING_SIGTERM ||
422 state == MOUNT_UNMOUNTING_SIGKILL ||
18c78fb1 423 state == MOUNT_MAINTENANCE)
8d567588
LP		 424 mount_notify_automount(m, -ENODEV);
425
e537352b 426 if (state != old_state)
40d50879 427 log_debug("%s changed %s -> %s",
4cd1fbcc 428 m->meta.id,
a16e1123
LP		 429 mount_state_to_string(old_state),
430 mount_state_to_string(state));
e537352b
LP		 431
432 unit_notify(UNIT(m), state_translation_table[old_state], state_translation_table[state]);
433}
434
435static int mount_coldplug(Unit *u) {
436 Mount *m = MOUNT(u);
a16e1123
LP		 437 MountState new_state = MOUNT_DEAD;
438 int r;
e537352b
LP		 439
440 assert(m);
441 assert(m->state == MOUNT_DEAD);
442
a16e1123
LP		 443 if (m->deserialized_state != m->state)
444 new_state = m->deserialized_state;
445 else if (m->from_proc_self_mountinfo)
446 new_state = MOUNT_MOUNTED;
e537352b 447
a16e1123 448 if (new_state != m->state) {
e537352b 449
a16e1123
LP		 450 if (new_state == MOUNT_MOUNTING ||
451 new_state == MOUNT_MOUNTING_DONE ||
452 new_state == MOUNT_REMOUNTING ||
453 new_state == MOUNT_UNMOUNTING ||
454 new_state == MOUNT_MOUNTING_SIGTERM ||
455 new_state == MOUNT_MOUNTING_SIGKILL ||
456 new_state == MOUNT_UNMOUNTING_SIGTERM ||
457 new_state == MOUNT_UNMOUNTING_SIGKILL ||
458 new_state == MOUNT_REMOUNTING_SIGTERM ||
459 new_state == MOUNT_REMOUNTING_SIGKILL) {
e537352b 460
a16e1123
LP		 461 if (m->control_pid <= 0)
462 return -EBADMSG;
e537352b 463
a16e1123
LP		 464 if ((r = unit_watch_pid(UNIT(m), m->control_pid)) < 0)
465 return r;
e537352b 466
a16e1123
LP		 467 if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
468 return r;
469 }
e537352b 470
a16e1123
LP		 471 mount_set_state(m, new_state);
472 }
e537352b
LP		 473
474 return 0;
e537352b
LP		 475}
476
477static void mount_dump(Unit *u, FILE *f, const char *prefix) {
478 Mount *m = MOUNT(u);
479 MountParameters *p;
480
481 assert(m);
482 assert(f);
483
484 if (m->from_proc_self_mountinfo)
485 p = &m->parameters_proc_self_mountinfo;
486 else if (m->from_fragment)
487 p = &m->parameters_fragment;
488 else
489 p = &m->parameters_etc_fstab;
490
491 fprintf(f,
492 "%sMount State: %s\n"
493 "%sWhere: %s\n"
494 "%sWhat: %s\n"
495 "%sFile System Type: %s\n"
496 "%sOptions: %s\n"
497 "%sFrom /etc/fstab: %s\n"
498 "%sFrom /proc/self/mountinfo: %s\n"
499 "%sFrom fragment: %s\n"
500 "%sKillMode: %s\n",
a16e1123 501 prefix, mount_state_to_string(m->state),
e537352b
LP		 502 prefix, m->where,
503 prefix, strna(p->what),
504 prefix, strna(p->fstype),
505 prefix, strna(p->options),
506 prefix, yes_no(m->from_etc_fstab),
507 prefix, yes_no(m->from_proc_self_mountinfo),
508 prefix, yes_no(m->from_fragment),
509 prefix, kill_mode_to_string(m->kill_mode));
510
511 if (m->control_pid > 0)
512 fprintf(f,
bb00e604
LP		 513 "%sControl PID: %lu\n",
514 prefix, (unsigned long) m->control_pid);
e537352b
LP		 515
516 exec_context_dump(&m->exec_context, f, prefix);
517}
518
a16e1123
LP		 519static int mount_spawn(Mount *m, ExecCommand *c, pid_t *_pid) {
520 pid_t pid;
521 int r;
522
523 assert(m);
524 assert(c);
525 assert(_pid);
526
527 if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
528 goto fail;
529
530 if ((r = exec_spawn(c,
531 NULL,
532 &m->exec_context,
533 NULL, 0,
1137a57c 534 m->meta.manager->environment,
a16e1123
LP		 535 true,
536 true,
4cd1fbcc
LP		 537 m->meta.manager->confirm_spawn,
538 m->meta.cgroup_bondings,
a16e1123
LP		 539 &pid)) < 0)
540 goto fail;
541
542 if ((r = unit_watch_pid(UNIT(m), pid)) < 0)
543 /* FIXME: we need to do something here */
544 goto fail;
545
546 *_pid = pid;
547
548 return 0;
549
550fail:
551 unit_unwatch_timer(UNIT(m), &m->timer_watch);
552
553 return r;
554}
555
e537352b
LP		 556static void mount_enter_dead(Mount *m, bool success) {
557 assert(m);
558
559 if (!success)
560 m->failure = true;
561
18c78fb1 562 mount_set_state(m, m->failure ? MOUNT_MAINTENANCE : MOUNT_DEAD);
e537352b
LP		 563}
564
80876c20
LP		 565static void mount_enter_mounted(Mount *m, bool success) {
566 assert(m);
567
568 if (!success)
569 m->failure = true;
570
571 mount_set_state(m, MOUNT_MOUNTED);
572}
573
e537352b
LP		 574static void mount_enter_signal(Mount *m, MountState state, bool success) {
575 int r;
80876c20 576 bool sent = false;
e537352b
LP		 577
578 assert(m);
579
580 if (!success)
581 m->failure = true;
582
80876c20
LP		 583 if (m->kill_mode != KILL_NONE) {
584 int sig = (state == MOUNT_MOUNTING_SIGTERM ||
585 state == MOUNT_UNMOUNTING_SIGTERM ||
586 state == MOUNT_REMOUNTING_SIGTERM) ? SIGTERM : SIGKILL;
e537352b
LP		 587
588 if (m->kill_mode == KILL_CONTROL_GROUP) {
589
4cd1fbcc 590 if ((r = cgroup_bonding_kill_list(m->meta.cgroup_bondings, sig)) < 0) {
e537352b
LP		 591 if (r != -EAGAIN && r != -ESRCH)
592 goto fail;
593 } else
594 sent = true;
595 }
596
80876c20 597 if (!sent && m->control_pid > 0)
e537352b
LP		 598 if (kill(m->kill_mode == KILL_PROCESS ? m->control_pid : -m->control_pid, sig) < 0 && errno != ESRCH) {
599 r = -errno;
600 goto fail;
601 }
602 }
603
80876c20
LP		 604 if (sent) {
605 if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
606 goto fail;
e537352b 607
80876c20
LP		 608 mount_set_state(m, state);
609 } else if (state == MOUNT_REMOUNTING_SIGTERM || state == MOUNT_REMOUNTING_SIGKILL)
610 mount_enter_mounted(m, true);
611 else
e537352b
LP		 612 mount_enter_dead(m, true);
613
614 return;
615
616fail:
4cd1fbcc 617 log_warning("%s failed to kill processes: %s", m->meta.id, strerror(-r));
e537352b 618
80876c20
LP		 619 if (state == MOUNT_REMOUNTING_SIGTERM || state == MOUNT_REMOUNTING_SIGKILL)
620 mount_enter_mounted(m, false);
621 else
622 mount_enter_dead(m, false);
e537352b
LP		 623}
624
625static void mount_enter_unmounting(Mount *m, bool success) {
e537352b
LP		 626 int r;
627
628 assert(m);
629
630 if (!success)
631 m->failure = true;
632
a16e1123
LP		 633 m->control_command_id = MOUNT_EXEC_UNMOUNT;
634 m->control_command = m->exec_command + MOUNT_EXEC_UNMOUNT;
e537352b
LP		 635
636 if ((r = exec_command_set(
a16e1123 637 m->control_command,
e537352b
LP		 638 "/bin/umount",
639 m->where,
640 NULL)) < 0)
641 goto fail;
642
a16e1123 643 mount_unwatch_control_pid(m);
5e94833f 644
a16e1123 645 if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
e537352b
LP		 646 goto fail;
647
648 mount_set_state(m, MOUNT_UNMOUNTING);
649
650 return;
651
652fail:
4cd1fbcc 653 log_warning("%s failed to run 'umount' task: %s", m->meta.id, strerror(-r));
e537352b
LP		 654 mount_enter_mounted(m, false);
655}
656
8d567588 657static void mount_enter_mounting(Mount *m) {
e537352b
LP		 658 int r;
659
660 assert(m);
661
a16e1123
LP		 662 m->control_command_id = MOUNT_EXEC_MOUNT;
663 m->control_command = m->exec_command + MOUNT_EXEC_MOUNT;
e537352b
LP		 664
665 if (m->from_fragment)
666 r = exec_command_set(
a16e1123 667 m->control_command,
e537352b
LP		 668 "/bin/mount",
669 m->parameters_fragment.what,
670 m->where,
671 "-t", m->parameters_fragment.fstype,
8d567588 672 m->parameters_fragment.options ? "-o" : NULL, m->parameters_fragment.options,
e537352b
LP		 673 NULL);
674 else if (m->from_etc_fstab)
675 r = exec_command_set(
a16e1123 676 m->control_command,
e537352b
LP		 677 "/bin/mount",
678 m->where,
679 NULL);
680 else
681 r = -ENOENT;
682
683 if (r < 0)
684 goto fail;
685
a16e1123 686 mount_unwatch_control_pid(m);
5e94833f 687
a16e1123 688 if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
e537352b
LP		 689 goto fail;
690
691 mount_set_state(m, MOUNT_MOUNTING);
692
693 return;
694
695fail:
4cd1fbcc 696 log_warning("%s failed to run 'mount' task: %s", m->meta.id, strerror(-r));
e537352b
LP		 697 mount_enter_dead(m, false);
698}
699
8d567588 700static void mount_enter_mounting_done(Mount *m) {
e537352b
LP		 701 assert(m);
702
e537352b
LP		 703 mount_set_state(m, MOUNT_MOUNTING_DONE);
704}
705
706static void mount_enter_remounting(Mount *m, bool success) {
e537352b
LP		 707 int r;
708
709 assert(m);
710
711 if (!success)
712 m->failure = true;
713
a16e1123
LP		 714 m->control_command_id = MOUNT_EXEC_REMOUNT;
715 m->control_command = m->exec_command + MOUNT_EXEC_REMOUNT;
e537352b
LP		 716
717 if (m->from_fragment) {
718 char *buf = NULL;
719 const char *o;
720
721 if (m->parameters_fragment.options) {
722 if (!(buf = strappend("remount,", m->parameters_fragment.options))) {
723 r = -ENOMEM;
724 goto fail;
725 }
726
727 o = buf;
728 } else
729 o = "remount";
730
731 r = exec_command_set(
a16e1123 732 m->control_command,
e537352b
LP		 733 "/bin/mount",
734 m->parameters_fragment.what,
735 m->where,
736 "-t", m->parameters_fragment.fstype,
737 "-o", o,
738 NULL);
739
740 free(buf);
741 } else if (m->from_etc_fstab)
742 r = exec_command_set(
a16e1123 743 m->control_command,
e537352b
LP		 744 "/bin/mount",
745 m->where,
746 "-o", "remount",
747 NULL);
748 else
749 r = -ENOENT;
750
751 if (r < 0) {
752 r = -ENOMEM;
753 goto fail;
754 }
755
a16e1123 756 mount_unwatch_control_pid(m);
5e94833f 757
a16e1123 758 if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
e537352b
LP		 759 goto fail;
760
761 mount_set_state(m, MOUNT_REMOUNTING);
762
763 return;
764
765fail:
766 mount_enter_mounted(m, false);
767}
768
769static int mount_start(Unit *u) {
770 Mount *m = MOUNT(u);
771
772 assert(m);
773
774 /* We cannot fulfill this request right now, try again later
775 * please! */
776 if (m->state == MOUNT_UNMOUNTING ||
777 m->state == MOUNT_UNMOUNTING_SIGTERM ||
778 m->state == MOUNT_UNMOUNTING_SIGKILL)
779 return -EAGAIN;
780
781 /* Already on it! */
782 if (m->state == MOUNT_MOUNTING ||
783 m->state == MOUNT_MOUNTING_SIGTERM ||
784 m->state == MOUNT_MOUNTING_SIGKILL)
785 return 0;
786
18c78fb1 787 assert(m->state == MOUNT_DEAD || m->state == MOUNT_MAINTENANCE);
e537352b
LP		 788
789 m->failure = false;
8d567588 790 mount_enter_mounting(m);
e537352b
LP		 791 return 0;
792}
793
794static int mount_stop(Unit *u) {
795 Mount *m = MOUNT(u);
796
797 assert(m);
798
799 /* Cann't do this right now. */
800 if (m->state == MOUNT_MOUNTING ||
801 m->state == MOUNT_MOUNTING_DONE ||
802 m->state == MOUNT_MOUNTING_SIGTERM ||
803 m->state == MOUNT_MOUNTING_SIGKILL ||
804 m->state == MOUNT_REMOUNTING ||
805 m->state == MOUNT_REMOUNTING_SIGTERM ||
806 m->state == MOUNT_REMOUNTING_SIGKILL)
807 return -EAGAIN;
808
809 /* Already on it */
810 if (m->state == MOUNT_UNMOUNTING ||
811 m->state == MOUNT_UNMOUNTING_SIGKILL ||
812 m->state == MOUNT_UNMOUNTING_SIGTERM)
813 return 0;
814
815 assert(m->state == MOUNT_MOUNTED);
816
817 mount_enter_unmounting(m, true);
818 return 0;
819}
820
821static int mount_reload(Unit *u) {
822 Mount *m = MOUNT(u);
823
824 assert(m);
825
826 if (m->state == MOUNT_MOUNTING_DONE)
827 return -EAGAIN;
828
829 assert(m->state == MOUNT_MOUNTED);
830
831 mount_enter_remounting(m, true);
832 return 0;
833}
834
a16e1123
LP		 835static int mount_serialize(Unit *u, FILE *f, FDSet *fds) {
836 Mount *m = MOUNT(u);
837
838 assert(m);
839 assert(f);
840 assert(fds);
841
842 unit_serialize_item(u, f, "state", mount_state_to_string(m->state));
843 unit_serialize_item(u, f, "failure", yes_no(m->failure));
844
845 if (m->control_pid > 0)
5925dd3c 846 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) m->control_pid);
a16e1123
LP		 847
848 if (m->control_command_id >= 0)
849 unit_serialize_item(u, f, "control-command", mount_exec_command_to_string(m->control_command_id));
850
851 return 0;
852}
853
854static int mount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
855 Mount *m = MOUNT(u);
856 int r;
857
858 assert(u);
859 assert(key);
860 assert(value);
861 assert(fds);
862
863 if (streq(key, "state")) {
864 MountState state;
865
866 if ((state = mount_state_from_string(value)) < 0)
867 log_debug("Failed to parse state value %s", value);
868 else
869 m->deserialized_state = state;
870 } else if (streq(key, "failure")) {
871 int b;
872
873 if ((b = parse_boolean(value)) < 0)
874 log_debug("Failed to parse failure value %s", value);
875 else
876 m->failure = b || m->failure;
877
878 } else if (streq(key, "control-pid")) {
5925dd3c 879 pid_t pid;
a16e1123 880
5925dd3c 881 if ((r = parse_pid(value, &pid)) < 0)
a16e1123
LP		 882 log_debug("Failed to parse control-pid value %s", value);
883 else
5925dd3c 884 m->control_pid = pid;
a16e1123
LP		 885 } else if (streq(key, "control-command")) {
886 MountExecCommand id;
887
888 if ((id = mount_exec_command_from_string(value)) < 0)
889 log_debug("Failed to parse exec-command value %s", value);
890 else {
891 m->control_command_id = id;
892 m->control_command = m->exec_command + id;
893 }
894
895 } else
896 log_debug("Unknown serialization key '%s'", key);
897
898 return 0;
899}
900
e537352b
LP		 901static UnitActiveState mount_active_state(Unit *u) {
902 assert(u);
903
904 return state_translation_table[MOUNT(u)->state];
905}
906
10a94420
LP		 907static const char *mount_sub_state_to_string(Unit *u) {
908 assert(u);
909
a16e1123 910 return mount_state_to_string(MOUNT(u)->state);
10a94420
LP		 911}
912
701cc384
LP		 913static bool mount_check_gc(Unit *u) {
914 Mount *m = MOUNT(u);
915
916 assert(m);
917
918 return m->from_etc_fstab || m->from_proc_self_mountinfo;
919}
920
e537352b
LP		 921static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) {
922 Mount *m = MOUNT(u);
923 bool success;
924
925 assert(m);
926 assert(pid >= 0);
927
8c47c732
LP		 928 if (pid != m->control_pid)
929 return;
e537352b 930
e537352b
LP		 931 m->control_pid = 0;
932
8c47c732
LP		 933 success = is_clean_exit(code, status);
934 m->failure = m->failure || !success;
935
a16e1123
LP		 936 if (m->control_command) {
937 exec_status_fill(&m->control_command->exec_status, pid, code, status);
938 m->control_command = NULL;
939 m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
940 }
941
9e2f7c11 942 log_debug("%s control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
e537352b
LP		 943
944 /* Note that mount(8) returning and the kernel sending us a
945 * mount table change event might happen out-of-order. If an
946 * operation succeed we assume the kernel will follow soon too
947 * and already change into the resulting state. If it fails
948 * we check if the kernel still knows about the mount. and
949 * change state accordingly. */
950
951 switch (m->state) {
952
953 case MOUNT_MOUNTING:
954 case MOUNT_MOUNTING_DONE:
955 case MOUNT_MOUNTING_SIGKILL:
956 case MOUNT_MOUNTING_SIGTERM:
957 case MOUNT_REMOUNTING:
958 case MOUNT_REMOUNTING_SIGKILL:
959 case MOUNT_REMOUNTING_SIGTERM:
960
19b160fa 961 if (success)
e537352b
LP		 962 mount_enter_mounted(m, true);
963 else if (m->from_proc_self_mountinfo)
964 mount_enter_mounted(m, false);
965 else
966 mount_enter_dead(m, false);
967 break;
968
969 case MOUNT_UNMOUNTING:
970 case MOUNT_UNMOUNTING_SIGKILL:
971 case MOUNT_UNMOUNTING_SIGTERM:
972
973 if (success)
974 mount_enter_dead(m, true);
975 else if (m->from_proc_self_mountinfo)
976 mount_enter_mounted(m, false);
977 else
978 mount_enter_dead(m, false);
979 break;
980
981 default:
982 assert_not_reached("Uh, control process died at wrong time.");
983 }
984}
985
986static void mount_timer_event(Unit *u, uint64_t elapsed, Watch *w) {
987 Mount *m = MOUNT(u);
988
989 assert(m);
990 assert(elapsed == 1);
991 assert(w == &m->timer_watch);
992
993 switch (m->state) {
994
995 case MOUNT_MOUNTING:
996 case MOUNT_MOUNTING_DONE:
9e2f7c11 997 log_warning("%s mounting timed out. Stopping.", u->meta.id);
e537352b
LP		 998 mount_enter_signal(m, MOUNT_MOUNTING_SIGTERM, false);
999 break;
1000
1001 case MOUNT_REMOUNTING:
9e2f7c11 1002 log_warning("%s remounting timed out. Stopping.", u->meta.id);
e537352b
LP		 1003 mount_enter_signal(m, MOUNT_REMOUNTING_SIGTERM, false);
1004 break;
1005
1006 case MOUNT_UNMOUNTING:
9e2f7c11 1007 log_warning("%s unmounting timed out. Stopping.", u->meta.id);
e537352b
LP		 1008 mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, false);
1009 break;
1010
1011 case MOUNT_MOUNTING_SIGTERM:
9e2f7c11 1012 log_warning("%s mounting timed out. Killing.", u->meta.id);
e537352b
LP		 1013 mount_enter_signal(m, MOUNT_MOUNTING_SIGKILL, false);
1014 break;
1015
1016 case MOUNT_REMOUNTING_SIGTERM:
9e2f7c11 1017 log_warning("%s remounting timed out. Killing.", u->meta.id);
e537352b
LP		 1018 mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, false);
1019 break;
1020
1021 case MOUNT_UNMOUNTING_SIGTERM:
9e2f7c11 1022 log_warning("%s unmounting timed out. Killing.", u->meta.id);
e537352b
LP		 1023 mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, false);
1024 break;
1025
1026 case MOUNT_MOUNTING_SIGKILL:
1027 case MOUNT_REMOUNTING_SIGKILL:
1028 case MOUNT_UNMOUNTING_SIGKILL:
9e2f7c11 1029 log_warning("%s mount process still around after SIGKILL. Ignoring.", u->meta.id);
e537352b
LP		 1030
1031 if (m->from_proc_self_mountinfo)
1032 mount_enter_mounted(m, false);
1033 else
1034 mount_enter_dead(m, false);
1035 break;
1036
1037 default:
1038 assert_not_reached("Timeout at wrong time.");
1039 }
1040}
1041
1042static int mount_add_one(
1043 Manager *m,
1044 const char *what,
1045 const char *where,
1046 const char *options,
1047 const char *fstype,
1048 bool from_proc_self_mountinfo,
1049 bool set_flags) {
b08d03ff
LP		 1050 int r;
1051 Unit *u;
1052 bool delete;
e537352b 1053 char *e, *w = NULL, *o = NULL, *f = NULL;
4e85aff4 1054 MountParameters *p;
b08d03ff 1055
f50e0a01 1056 assert(m);
b08d03ff
LP		 1057 assert(what);
1058 assert(where);
e537352b
LP		 1059 assert(options);
1060 assert(fstype);
1061
1062 assert(!set_flags || from_proc_self_mountinfo);
1063
1064 /* Ignore API mount points. They should never be referenced in
1065 * dependencies ever. */
1066 if (mount_point_is_api(where))
1067 return 0;
b08d03ff 1068
8d567588
LP		 1069 if (streq(fstype, "autofs"))
1070 return 0;
1071
4e85aff4
LP		 1072 /* probably some kind of swap, ignore */
1073 if (!is_path(where))
b08d03ff
LP		 1074 return 0;
1075
a16e1123 1076 if (!(e = unit_name_from_path(where, ".mount")))
b08d03ff
LP		 1077 return -ENOMEM;
1078
1079 if (!(u = manager_get_unit(m, e))) {
1080 delete = true;
1081
1082 if (!(u = unit_new(m))) {
1083 free(e);
1084 return -ENOMEM;
1085 }
1086
1087 r = unit_add_name(u, e);
1088 free(e);
1089
1090 if (r < 0)
1091 goto fail;
1092
e537352b 1093 if (!(MOUNT(u)->where = strdup(where))) {
07b0b134
ML		 1094 r = -ENOMEM;
1095 goto fail;
1096 }
f50e0a01 1097
f94ea366 1098 unit_add_to_load_queue(u);
b08d03ff
LP		 1099 } else {
1100 delete = false;
1101 free(e);
1102 }
1103
e537352b
LP		 1104 if (!(w = strdup(what)) ||
1105 !(o = strdup(options)) ||
1106 !(f = strdup(fstype))) {
1107 r = -ENOMEM;
1108 goto fail;
1109 }
1110
1111 if (from_proc_self_mountinfo) {
4e85aff4 1112 p = &MOUNT(u)->parameters_proc_self_mountinfo;
e537352b
LP		 1113
1114 if (set_flags) {
1115 MOUNT(u)->is_mounted = true;
1116 MOUNT(u)->just_mounted = !MOUNT(u)->from_proc_self_mountinfo;
4e85aff4 1117 MOUNT(u)->just_changed = !streq_ptr(p->options, o);
e537352b 1118 }
ef734fd6 1119
f50e0a01 1120 MOUNT(u)->from_proc_self_mountinfo = true;
ef734fd6 1121 } else {
4e85aff4 1122 p = &MOUNT(u)->parameters_etc_fstab;
f50e0a01 1123 MOUNT(u)->from_etc_fstab = true;
ef734fd6 1124 }
f50e0a01 1125
4e85aff4
LP		 1126 free(p->what);
1127 p->what = w;
b08d03ff 1128
4e85aff4
LP		 1129 free(p->options);
1130 p->options = o;
e537352b 1131
4e85aff4
LP		 1132 free(p->fstype);
1133 p->fstype = f;
b08d03ff 1134
c1e1601e
LP		 1135 unit_add_to_dbus_queue(u);
1136
b08d03ff
LP		 1137 return 0;
1138
1139fail:
e537352b
LP		 1140 free(w);
1141 free(o);
1142 free(f);
1143
b08d03ff
LP		 1144 if (delete && u)
1145 unit_free(u);
1146
4e85aff4 1147 return r;
b08d03ff
LP		 1148}
1149
1150static char *fstab_node_to_udev_node(char *p) {
1151 char *dn, *t;
1152 int r;
1153
1154 /* FIXME: to follow udev's logic 100% we need to leave valid
1155 * UTF8 chars unescaped */
1156
1157 if (startswith(p, "LABEL=")) {
1158
f50e0a01 1159 if (!(t = xescape(p+6, "/ ")))
b08d03ff
LP		 1160 return NULL;
1161
f50e0a01 1162 r = asprintf(&dn, "/dev/disk/by-label/%s", t);
b08d03ff
LP		 1163 free(t);
1164
1165 if (r < 0)
1166 return NULL;
1167
1168 return dn;
1169 }
1170
1171 if (startswith(p, "UUID=")) {
1172
f50e0a01 1173 if (!(t = xescape(p+5, "/ ")))
b08d03ff
LP		 1174 return NULL;
1175
f50e0a01 1176 r = asprintf(&dn, "/dev/disk/by-uuid/%s", ascii_strlower(t));
b08d03ff
LP		 1177 free(t);
1178
1179 if (r < 0)
1180 return NULL;
1181
1182 return dn;
1183 }
1184
1185 return strdup(p);
1186}
1187
07b0b134
ML		 1188static int mount_find_pri(char *options) {
1189 char *end, *pri;
1190 unsigned long r;
1191
1192 if (!(pri = mount_test_option(options, "pri=")))
1193 return 0;
1194
1195 pri += 4;
1196
1197 errno = 0;
1198 r = strtoul(pri, &end, 10);
1199
1200 if (errno != 0)
1201 return -errno;
1202
1203 if (end == pri || (*end != ',' && *end != 0))
1204 return -EINVAL;
1205
1206 return (int) r;
1207}
1208
e537352b 1209static int mount_load_etc_fstab(Manager *m) {
b08d03ff
LP		 1210 FILE *f;
1211 int r;
1212 struct mntent* me;
1213
1214 assert(m);
1215
1216 errno = 0;
1217 if (!(f = setmntent("/etc/fstab", "r")))
1218 return -errno;
1219
1220 while ((me = getmntent(f))) {
1221 char *where, *what;
1222
1223 if (!(what = fstab_node_to_udev_node(me->mnt_fsname))) {
1224 r = -ENOMEM;
1225 goto finish;
1226 }
1227
1228 if (!(where = strdup(me->mnt_dir))) {
1229 free(what);
1230 r = -ENOMEM;
1231 goto finish;
1232 }
1233
1234 if (what[0] == '/')
1235 path_kill_slashes(what);
1236
1237 if (where[0] == '/')
1238 path_kill_slashes(where);
1239
07b0b134
ML		 1240 if (streq(me->mnt_type, "swap")) {
1241 int pri;
1242
1243 if ((pri = mount_find_pri(me->mnt_opts)) < 0)
1244 r = pri;
1245 else
1246 r = swap_add_one(m,
1247 what,
07b0b134 1248 pri,
4e85aff4
LP		 1249 !!mount_test_option(me->mnt_opts, MNTOPT_NOAUTO),
1250 !!mount_test_option(me->mnt_opts, "comment=systemd.swapon"),
07b0b134
ML		 1251 false);
1252 } else
1253 r = mount_add_one(m, what, where, me->mnt_opts, me->mnt_type, false, false);
1254
b08d03ff
LP		 1255 free(what);
1256 free(where);
1257
1258 if (r < 0)
1259 goto finish;
1260 }
1261
1262 r = 0;
1263finish:
1264
1265 endmntent(f);
1266 return r;
1267}
1268
ef734fd6 1269static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) {
b08d03ff 1270 int r;
a2e0f3d3 1271 char *device, *path, *options, *options2, *fstype, *d, *p, *o;
b08d03ff
LP		 1272
1273 assert(m);
1274
ef734fd6 1275 rewind(m->proc_self_mountinfo);
b08d03ff
LP		 1276
1277 for (;;) {
1278 int k;
e537352b 1279
a2e0f3d3 1280 device = path = options = options2 = fstype = d = p = o = NULL;
b08d03ff 1281
ef734fd6 1282 if ((k = fscanf(m->proc_self_mountinfo,
b08d03ff
LP		 1283 "%*s " /* (1) mount id */
1284 "%*s " /* (2) parent id */
1285 "%*s " /* (3) major:minor */
1286 "%*s " /* (4) root */
1287 "%ms " /* (5) mount point */
e537352b 1288 "%ms" /* (6) mount options */
b08d03ff
LP		 1289 "%*[^-]" /* (7) optional fields */
1290 "- " /* (8) seperator */
e537352b 1291 "%ms " /* (9) file system type */
ef734fd6 1292 "%ms" /* (10) mount source */
a2e0f3d3 1293 "%ms" /* (11) mount options 2 */
ef734fd6 1294 "%*[^\n]", /* some rubbish at the end */
b08d03ff 1295 &path,
e537352b
LP		 1296 &options,
1297 &fstype,
a2e0f3d3
LP		 1298 &device,
1299 &options2)) != 5) {
b08d03ff 1300
ef734fd6
LP		 1301 if (k == EOF)
1302 break;
b08d03ff 1303
e537352b
LP		 1304 r = -EBADMSG;
1305 goto finish;
b08d03ff
LP		 1306 }
1307
a2e0f3d3
LP		 1308 if (asprintf(&o, "%s,%s", options, options2) < 0) {
1309 r = -ENOMEM;
1310 goto finish;
1311 }
1312
e537352b
LP		 1313 if (!(d = cunescape(device)) ||
1314 !(p = cunescape(path))) {
1315 r = -ENOMEM;
1316 goto finish;
b08d03ff 1317 }
b08d03ff 1318
a2e0f3d3 1319 if ((r = mount_add_one(m, d, p, o, fstype, true, set_flags)) < 0)
e537352b 1320 goto finish;
b08d03ff 1321
e537352b
LP		 1322 free(device);
1323 free(path);
1324 free(options);
a2e0f3d3 1325 free(options2);
e537352b 1326 free(fstype);
b08d03ff
LP		 1327 free(d);
1328 free(p);
a2e0f3d3 1329 free(o);
b08d03ff
LP		 1330 }
1331
e537352b
LP		 1332 r = 0;
1333
1334finish:
1335 free(device);
1336 free(path);
1337 free(options);
a2e0f3d3 1338 free(options2);
e537352b
LP		 1339 free(fstype);
1340 free(d);
1341 free(p);
a2e0f3d3 1342 free(o);
e537352b
LP		 1343
1344 return r;
1345}
1346
1347static void mount_shutdown(Manager *m) {
1348 assert(m);
1349
a16e1123 1350 if (m->proc_self_mountinfo) {
e537352b 1351 fclose(m->proc_self_mountinfo);
a16e1123
LP		 1352 m->proc_self_mountinfo = NULL;
1353 }
b08d03ff
LP		 1354}
1355
1356static int mount_enumerate(Manager *m) {
1357 int r;
ef734fd6 1358 struct epoll_event ev;
b08d03ff
LP		 1359 assert(m);
1360
a16e1123
LP		 1361 if (!m->proc_self_mountinfo) {
1362 if (!(m->proc_self_mountinfo = fopen("/proc/self/mountinfo", "re")))
1363 return -errno;
ef734fd6 1364
a16e1123
LP		 1365 m->mount_watch.type = WATCH_MOUNT;
1366 m->mount_watch.fd = fileno(m->proc_self_mountinfo);
ef734fd6 1367
a16e1123
LP		 1368 zero(ev);
1369 ev.events = EPOLLERR;
1370 ev.data.ptr = &m->mount_watch;
ef734fd6 1371
a16e1123
LP		 1372 if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->mount_watch.fd, &ev) < 0)
1373 return -errno;
1374 }
ef734fd6 1375
e537352b 1376 if ((r = mount_load_etc_fstab(m)) < 0)
b08d03ff
LP		 1377 goto fail;
1378
ef734fd6 1379 if ((r = mount_load_proc_self_mountinfo(m, false)) < 0)
b08d03ff
LP		 1380 goto fail;
1381
1382 return 0;
1383
1384fail:
1385 mount_shutdown(m);
1386 return r;
5cb5a6ff
LP		 1387}
1388
ef734fd6
LP		 1389void mount_fd_event(Manager *m, int events) {
1390 Meta *meta;
1391 int r;
1392
1393 assert(m);
f94ea366 1394 assert(events == EPOLLERR);
ef734fd6
LP		 1395
1396 /* The manager calls this for every fd event happening on the
1397 * /proc/self/mountinfo file, which informs us about mounting
1398 * table changes */
1399
1400 if ((r = mount_load_proc_self_mountinfo(m, true)) < 0) {
d9a76d8f 1401 log_error("Failed to reread /proc/self/mountinfo: %s", strerror(errno));
e537352b
LP		 1402
1403 /* Reset flags, just in case, for later calls */
1404 LIST_FOREACH(units_per_type, meta, m->units_per_type[UNIT_MOUNT]) {
1405 Mount *mount = (Mount*) meta;
1406
1407 mount->is_mounted = mount->just_mounted = mount->just_changed = false;
1408 }
1409
ef734fd6
LP		 1410 return;
1411 }
1412
1413 manager_dispatch_load_queue(m);
1414
1415 LIST_FOREACH(units_per_type, meta, m->units_per_type[UNIT_MOUNT]) {
1416 Mount *mount = (Mount*) meta;
1417
e537352b
LP		 1418 if (!mount->is_mounted) {
1419 /* This has just been unmounted. */
1420
ef734fd6 1421 mount->from_proc_self_mountinfo = false;
e537352b
LP		 1422
1423 switch (mount->state) {
1424
1425 case MOUNT_MOUNTED:
1426 mount_enter_dead(mount, true);
1427 break;
1428
1429 default:
1430 mount_set_state(mount, mount->state);
1431 break;
1432
1433 }
1434
1435 } else if (mount->just_mounted || mount->just_changed) {
1436
1437 /* New or changed entrymount */
1438
1439 switch (mount->state) {
1440
1441 case MOUNT_DEAD:
18c78fb1 1442 case MOUNT_MAINTENANCE:
e537352b
LP		 1443 mount_enter_mounted(mount, true);
1444 break;
1445
1446 case MOUNT_MOUNTING:
8d567588 1447 mount_enter_mounting_done(mount);
e537352b
LP		 1448 break;
1449
1450 default:
1451 /* Nothing really changed, but let's
1452 * issue an notification call
1453 * nonetheless, in case somebody is
1454 * waiting for this. (e.g. file system
1455 * ro/rw remounts.) */
1456 mount_set_state(mount, mount->state);
1457 break;
1458 }
1459 }
1460
1461 /* Reset the flags for later calls */
1462 mount->is_mounted = mount->just_mounted = mount->just_changed = false;
1463 }
1464}
1465
1466int mount_path_is_mounted(Manager *m, const char* path) {
1467 char *t;
1468 int r;
1469
1470 assert(m);
1471 assert(path);
1472
1473 if (path[0] != '/')
1474 return 1;
1475
1476 if (!(t = strdup(path)))
1477 return -ENOMEM;
1478
1479 path_kill_slashes(t);
1480
1481 for (;;) {
1482 char *e, *slash;
1483 Unit *u;
1484
a16e1123 1485 if (!(e = unit_name_from_path(t, ".mount"))) {
e537352b
LP		 1486 r = -ENOMEM;
1487 goto finish;
1488 }
1489
1490 u = manager_get_unit(m, e);
1491 free(e);
1492
1493 if (u &&
1494 (MOUNT(u)->from_etc_fstab || MOUNT(u)->from_fragment) &&
1495 MOUNT(u)->state != MOUNT_MOUNTED) {
1496 r = 0;
1497 goto finish;
ef734fd6
LP		 1498 }
1499
e537352b
LP		 1500 assert_se(slash = strrchr(t, '/'));
1501
1502 if (slash == t) {
1503 r = 1;
1504 goto finish;
1505 }
1506
1507 *slash = 0;
ef734fd6 1508 }
e537352b
LP		 1509
1510 r = 1;
1511
1512finish:
1513 free(t);
1514 return r;
ef734fd6
LP		 1515}
1516
a16e1123
LP		 1517static const char* const mount_state_table[_MOUNT_STATE_MAX] = {
1518 [MOUNT_DEAD] = "dead",
1519 [MOUNT_MOUNTING] = "mounting",
1520 [MOUNT_MOUNTING_DONE] = "mounting-done",
1521 [MOUNT_MOUNTED] = "mounted",
1522 [MOUNT_REMOUNTING] = "remounting",
1523 [MOUNT_UNMOUNTING] = "unmounting",
1524 [MOUNT_MOUNTING_SIGTERM] = "mounting-sigterm",
1525 [MOUNT_MOUNTING_SIGKILL] = "mounting-sigkill",
1526 [MOUNT_REMOUNTING_SIGTERM] = "remounting-sigterm",
1527 [MOUNT_REMOUNTING_SIGKILL] = "remounting-sigkill",
1528 [MOUNT_UNMOUNTING_SIGTERM] = "unmounting-sigterm",
1529 [MOUNT_UNMOUNTING_SIGKILL] = "unmounting-sigkill",
18c78fb1 1530 [MOUNT_MAINTENANCE] = "maintenance"
a16e1123
LP		 1531};
1532
1533DEFINE_STRING_TABLE_LOOKUP(mount_state, MountState);
1534
1535static const char* const mount_exec_command_table[_MOUNT_EXEC_COMMAND_MAX] = {
1536 [MOUNT_EXEC_MOUNT] = "ExecMount",
1537 [MOUNT_EXEC_UNMOUNT] = "ExecUnmount",
1538 [MOUNT_EXEC_REMOUNT] = "ExecRemount",
1539};
1540
1541DEFINE_STRING_TABLE_LOOKUP(mount_exec_command, MountExecCommand);
1542
87f0e418 1543const UnitVTable mount_vtable = {
5cb5a6ff
LP		 1544 .suffix = ".mount",
1545
e537352b 1546 .no_alias = true,
9e2f7c11 1547 .no_instances = true,
c497c7a9 1548 .no_isolate = true,
e537352b
LP		 1549
1550 .init = mount_init,
1551 .load = mount_load,
034c6ed7 1552 .done = mount_done,
e537352b 1553
f50e0a01
LP		 1554 .coldplug = mount_coldplug,
1555
034c6ed7 1556 .dump = mount_dump,
5cb5a6ff 1557
e537352b
LP		 1558 .start = mount_start,
1559 .stop = mount_stop,
1560 .reload = mount_reload,
1561
a16e1123
LP		 1562 .serialize = mount_serialize,
1563 .deserialize_item = mount_deserialize_item,
1564
f50e0a01 1565 .active_state = mount_active_state,
10a94420 1566 .sub_state_to_string = mount_sub_state_to_string,
b08d03ff 1567
701cc384
LP		 1568 .check_gc = mount_check_gc,
1569
e537352b
LP		 1570 .sigchld_event = mount_sigchld_event,
1571 .timer_event = mount_timer_event,
1572
4139c1b2
LP		 1573 .bus_message_handler = bus_mount_message_handler,
1574
f50e0a01
LP		 1575 .enumerate = mount_enumerate,
1576 .shutdown = mount_shutdown
5cb5a6ff 1577};
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