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systemctl: show connection counters only for Accept=yes sockets
[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;
3e5235b0
LP		 63 m->directory_mode = 0755;
64
c3686083
LP		 65 exec_context_init(&m->exec_context);
66
a16e1123
LP		 67 /* We need to make sure that /bin/mount is always called in
68 * the same process group as us, so that the autofs kernel
69 * side doesn't send us another mount request while we are
70 * already trying to comply its last one. */
74922904 71 m->exec_context.same_pgrp = true;
8d567588 72
a16e1123
LP		 73 m->timer_watch.type = WATCH_INVALID;
74
75 m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
8d567588
LP		 76}
77
a16e1123 78static void mount_unwatch_control_pid(Mount *m) {
5e94833f
LP		 79 assert(m);
80
81 if (m->control_pid <= 0)
82 return;
83
84 unit_unwatch_pid(UNIT(m), m->control_pid);
85 m->control_pid = 0;
86}
87
e537352b
LP		 88static void mount_parameters_done(MountParameters *p) {
89 assert(p);
90
91 free(p->what);
92 free(p->options);
93 free(p->fstype);
94
95 p->what = p->options = p->fstype = NULL;
96}
97
87f0e418 98static void mount_done(Unit *u) {
ef734fd6 99 Mount *m = MOUNT(u);
034c6ed7 100
ef734fd6 101 assert(m);
034c6ed7 102
e537352b
LP		 103 free(m->where);
104 m->where = NULL;
f50e0a01 105
e537352b
LP		 106 mount_parameters_done(&m->parameters_etc_fstab);
107 mount_parameters_done(&m->parameters_proc_self_mountinfo);
108 mount_parameters_done(&m->parameters_fragment);
ef734fd6 109
e537352b
LP		 110 exec_context_done(&m->exec_context);
111 exec_command_done_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX);
112 m->control_command = NULL;
f50e0a01 113
a16e1123 114 mount_unwatch_control_pid(m);
f50e0a01 115
e537352b 116 unit_unwatch_timer(u, &m->timer_watch);
f50e0a01
LP		 117}
118
6e2ef85b
LP		 119static int mount_add_mount_links(Mount *m) {
120 Meta *other;
b08d03ff
LP		 121 int r;
122
6e2ef85b 123 assert(m);
b08d03ff 124
6e2ef85b
LP		 125 /* Adds in links to other mount points that might lie below or
126 * above us in the hierarchy */
e537352b 127
6e2ef85b
LP		 128 LIST_FOREACH(units_per_type, other, m->meta.manager->units_per_type[UNIT_MOUNT]) {
129 Mount *n = (Mount*) other;
07b0b134 130
6e2ef85b
LP		 131 if (n == m)
132 continue;
b08d03ff 133
6e2ef85b
LP		 134 if (n->meta.load_state != UNIT_LOADED)
135 continue;
b08d03ff 136
6e2ef85b 137 if (path_startswith(m->where, n->where)) {
b08d03ff 138
6e2ef85b
LP		 139 if ((r = unit_add_dependency(UNIT(m), UNIT_AFTER, UNIT(n), true)) < 0)
140 return r;
b08d03ff 141
6e2ef85b
LP		 142 if (n->from_etc_fstab || n->from_fragment)
143 if ((r = unit_add_dependency(UNIT(m), UNIT_REQUIRES, UNIT(n), true)) < 0)
144 return r;
b08d03ff 145
6e2ef85b 146 } else if (path_startswith(n->where, m->where)) {
b08d03ff 147
6e2ef85b
LP		 148 if ((r = unit_add_dependency(UNIT(m), UNIT_BEFORE, UNIT(n), true)) < 0)
149 return r;
150
151 if (m->from_etc_fstab || m->from_fragment)
152 if ((r = unit_add_dependency(UNIT(n), UNIT_REQUIRES, UNIT(m), true)) < 0)
153 return r;
154 }
155 }
b08d03ff
LP		 156
157 return 0;
158}
159
6e2ef85b 160static int mount_add_swap_links(Mount *m) {
ef734fd6 161 Meta *other;
b08d03ff
LP		 162 int r;
163
6e2ef85b 164 assert(m);
b08d03ff 165
6e2ef85b
LP		 166 LIST_FOREACH(units_per_type, other, m->meta.manager->units_per_type[UNIT_SWAP])
167 if ((r = swap_add_one_mount_link((Swap*) other, m)) < 0)
168 return r;
b08d03ff 169
6e2ef85b
LP		 170 return 0;
171}
b08d03ff 172
01f78473
LP		 173static int mount_add_path_links(Mount *m) {
174 Meta *other;
175 int r;
176
177 assert(m);
178
179 LIST_FOREACH(units_per_type, other, m->meta.manager->units_per_type[UNIT_PATH])
180 if ((r = path_add_one_mount_link((Path*) other, m)) < 0)
181 return r;
182
183 return 0;
184}
185
6e2ef85b
LP		 186static int mount_add_automount_links(Mount *m) {
187 Meta *other;
188 int r;
e537352b 189
6e2ef85b 190 assert(m);
b08d03ff 191
6e2ef85b
LP		 192 LIST_FOREACH(units_per_type, other, m->meta.manager->units_per_type[UNIT_AUTOMOUNT])
193 if ((r = automount_add_one_mount_link((Automount*) other, m)) < 0)
194 return r;
b08d03ff 195
6e2ef85b
LP		 196 return 0;
197}
b08d03ff 198
6e2ef85b
LP		 199static int mount_add_socket_links(Mount *m) {
200 Meta *other;
201 int r;
b08d03ff 202
6e2ef85b 203 assert(m);
b08d03ff 204
6e2ef85b
LP		 205 LIST_FOREACH(units_per_type, other, m->meta.manager->units_per_type[UNIT_SOCKET])
206 if ((r = socket_add_one_mount_link((Socket*) other, m)) < 0)
207 return r;
b08d03ff
LP		 208
209 return 0;
210}
211
07b0b134 212static char* mount_test_option(const char *haystack, const char *needle) {
e537352b
LP		 213 struct mntent me;
214
215 assert(needle);
216
217 /* Like glibc's hasmntopt(), but works on a string, not a
218 * struct mntent */
219
220 if (!haystack)
221 return false;
222
223 zero(me);
224 me.mnt_opts = (char*) haystack;
225
07b0b134 226 return hasmntopt(&me, needle);
e537352b
LP		 227}
228
229static int mount_add_target_links(Mount *m) {
230 const char *target;
231 MountParameters *p;
a16e1123 232 Unit *tu;
e537352b 233 int r;
307e85ef 234 bool noauto, handle, automount, user;
e537352b
LP		 235
236 assert(m);
237
238 if (m->from_fragment)
239 p = &m->parameters_fragment;
240 else if (m->from_etc_fstab)
241 p = &m->parameters_etc_fstab;
242 else
243 return 0;
244
07b0b134 245 noauto = !!mount_test_option(p->options, MNTOPT_NOAUTO);
307e85ef 246 user = mount_test_option(p->options, "user") || mount_test_option(p->options, "users");
07b0b134
ML		 247 handle = !!mount_test_option(p->options, "comment=systemd.mount");
248 automount = !!mount_test_option(p->options, "comment=systemd.automount");
e537352b 249
e537352b
LP		 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
398ef8ba 256 if ((r = manager_load_unit(m->meta.manager, target, NULL, NULL, &tu)) < 0)
e537352b
LP		 257 return r;
258
a3d4e06d 259 if (automount && m->meta.manager->running_as == MANAGER_SYSTEM) {
a16e1123
LP		 260 Unit *am;
261
262 if ((r = unit_load_related_unit(UNIT(m), ".automount", &am)) < 0)
9fcc065a 263 return r;
e537352b 264
2c966c03 265 return unit_add_two_dependencies(tu, UNIT_AFTER, UNIT_WANTS, UNIT(am), true);
a16e1123
LP		 266 } else {
267
4e85aff4 268 if (!noauto && handle)
a3d4e06d 269 if (user || m->meta.manager->running_as == MANAGER_SYSTEM)
307e85ef
LP		 270 if ((r = unit_add_dependency(tu, UNIT_WANTS, UNIT(m), true)) < 0)
271 return r;
a16e1123 272
701cc384 273 return unit_add_dependency(UNIT(m), UNIT_BEFORE, tu, true);
a16e1123 274 }
e537352b
LP		 275}
276
8d567588
LP		 277static int mount_verify(Mount *m) {
278 bool b;
279 char *e;
280 assert(m);
281
8cbef760 282 if (m->meta.load_state != UNIT_LOADED)
8d567588
LP		 283 return 0;
284
8cbef760
LP		 285 if (!m->from_etc_fstab && !m->from_fragment && !m->from_proc_self_mountinfo)
286 return -ENOENT;
287
a16e1123 288 if (!(e = unit_name_from_path(m->where, ".mount")))
8d567588
LP		 289 return -ENOMEM;
290
291 b = unit_has_name(UNIT(m), e);
292 free(e);
293
294 if (!b) {
4cd1fbcc 295 log_error("%s's Where setting doesn't match unit name. Refusing.", m->meta.id);
8d567588
LP		 296 return -EINVAL;
297 }
298
4e85aff4 299 if (m->meta.fragment_path && !m->parameters_fragment.what) {
4cd1fbcc 300 log_error("%s's What setting is missing. Refusing.", m->meta.id);
4e85aff4
LP		 301 return -EBADMSG;
302 }
303
4d0e5dbd
LP		 304 if (m->exec_context.pam_name && m->kill_mode != KILL_CONTROL_GROUP) {
305 log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", m->meta.id);
306 return -EINVAL;
307 }
308
8d567588
LP		 309 return 0;
310}
311
e537352b
LP		 312static int mount_load(Unit *u) {
313 Mount *m = MOUNT(u);
314 int r;
315
316 assert(u);
317 assert(u->meta.load_state == UNIT_STUB);
318
319 if ((r = unit_load_fragment_and_dropin_optional(u)) < 0)
320 return r;
321
322 /* This is a new unit? Then let's add in some extras */
323 if (u->meta.load_state == UNIT_LOADED) {
4e85aff4 324 const char *what = NULL;
6e2ef85b 325
4e85aff4
LP		 326 if (m->meta.fragment_path)
327 m->from_fragment = true;
e537352b 328
a16e1123
LP		 329 if (!m->where)
330 if (!(m->where = unit_name_to_path(u->meta.id)))
331 return -ENOMEM;
332
333 path_kill_slashes(m->where);
334
4e85aff4
LP		 335 if (!m->meta.description)
336 if ((r = unit_set_description(u, m->where)) < 0)
337 return r;
e537352b 338
4e85aff4
LP		 339 if (m->from_fragment && m->parameters_fragment.what)
340 what = m->parameters_fragment.what;
341 else if (m->from_etc_fstab && m->parameters_etc_fstab.what)
342 what = m->parameters_etc_fstab.what;
343 else if (m->from_proc_self_mountinfo && m->parameters_proc_self_mountinfo.what)
344 what = m->parameters_proc_self_mountinfo.what;
e537352b 345
4e85aff4 346 if (what)
a3d4e06d 347 if ((r = unit_add_node_link(u, what, u->meta.manager->running_as == MANAGER_SYSTEM)) < 0)
4e85aff4 348 return r;
6e2ef85b
LP		 349
350 if ((r = mount_add_mount_links(m)) < 0)
351 return r;
352
353 if ((r = mount_add_socket_links(m)) < 0)
354 return r;
355
356 if ((r = mount_add_swap_links(m)) < 0)
e537352b
LP		 357 return r;
358
01f78473
LP		 359 if ((r = mount_add_path_links(m)) < 0)
360 return r;
361
6e2ef85b 362 if ((r = mount_add_automount_links(m)) < 0)
e537352b
LP		 363 return r;
364
6e2ef85b 365 if ((r = mount_add_target_links(m)) < 0)
e537352b
LP		 366 return r;
367
368 if ((r = unit_add_default_cgroup(u)) < 0)
369 return r;
370 }
371
8d567588 372 return mount_verify(m);
e537352b
LP		 373}
374
a16e1123
LP		 375static int mount_notify_automount(Mount *m, int status) {
376 Unit *p;
377 int r;
378
379 assert(m);
380
381 if ((r = unit_get_related_unit(UNIT(m), ".automount", &p)) < 0)
382 return r == -ENOENT ? 0 : r;
383
384 return automount_send_ready(AUTOMOUNT(p), status);
385}
386
e537352b
LP		 387static void mount_set_state(Mount *m, MountState state) {
388 MountState old_state;
389 assert(m);
390
391 old_state = m->state;
392 m->state = state;
393
394 if (state != MOUNT_MOUNTING &&
395 state != MOUNT_MOUNTING_DONE &&
396 state != MOUNT_REMOUNTING &&
397 state != MOUNT_UNMOUNTING &&
398 state != MOUNT_MOUNTING_SIGTERM &&
399 state != MOUNT_MOUNTING_SIGKILL &&
400 state != MOUNT_UNMOUNTING_SIGTERM &&
401 state != MOUNT_UNMOUNTING_SIGKILL &&
402 state != MOUNT_REMOUNTING_SIGTERM &&
403 state != MOUNT_REMOUNTING_SIGKILL) {
404 unit_unwatch_timer(UNIT(m), &m->timer_watch);
a16e1123 405 mount_unwatch_control_pid(m);
e537352b 406 m->control_command = NULL;
a16e1123 407 m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
e537352b
LP		 408 }
409
8d567588
LP		 410 if (state == MOUNT_MOUNTED ||
411 state == MOUNT_REMOUNTING)
412 mount_notify_automount(m, 0);
413 else if (state == MOUNT_DEAD ||
414 state == MOUNT_UNMOUNTING ||
415 state == MOUNT_MOUNTING_SIGTERM ||
416 state == MOUNT_MOUNTING_SIGKILL ||
417 state == MOUNT_REMOUNTING_SIGTERM ||
418 state == MOUNT_REMOUNTING_SIGKILL ||
419 state == MOUNT_UNMOUNTING_SIGTERM ||
420 state == MOUNT_UNMOUNTING_SIGKILL ||
18c78fb1 421 state == MOUNT_MAINTENANCE)
8d567588
LP		 422 mount_notify_automount(m, -ENODEV);
423
e537352b 424 if (state != old_state)
40d50879 425 log_debug("%s changed %s -> %s",
4cd1fbcc 426 m->meta.id,
a16e1123
LP		 427 mount_state_to_string(old_state),
428 mount_state_to_string(state));
e537352b
LP		 429
430 unit_notify(UNIT(m), state_translation_table[old_state], state_translation_table[state]);
431}
432
433static int mount_coldplug(Unit *u) {
434 Mount *m = MOUNT(u);
a16e1123
LP		 435 MountState new_state = MOUNT_DEAD;
436 int r;
e537352b
LP		 437
438 assert(m);
439 assert(m->state == MOUNT_DEAD);
440
a16e1123
LP		 441 if (m->deserialized_state != m->state)
442 new_state = m->deserialized_state;
443 else if (m->from_proc_self_mountinfo)
444 new_state = MOUNT_MOUNTED;
e537352b 445
a16e1123 446 if (new_state != m->state) {
e537352b 447
a16e1123
LP		 448 if (new_state == MOUNT_MOUNTING ||
449 new_state == MOUNT_MOUNTING_DONE ||
450 new_state == MOUNT_REMOUNTING ||
451 new_state == MOUNT_UNMOUNTING ||
452 new_state == MOUNT_MOUNTING_SIGTERM ||
453 new_state == MOUNT_MOUNTING_SIGKILL ||
454 new_state == MOUNT_UNMOUNTING_SIGTERM ||
455 new_state == MOUNT_UNMOUNTING_SIGKILL ||
456 new_state == MOUNT_REMOUNTING_SIGTERM ||
457 new_state == MOUNT_REMOUNTING_SIGKILL) {
e537352b 458
a16e1123
LP		 459 if (m->control_pid <= 0)
460 return -EBADMSG;
e537352b 461
a16e1123
LP		 462 if ((r = unit_watch_pid(UNIT(m), m->control_pid)) < 0)
463 return r;
e537352b 464
a16e1123
LP		 465 if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
466 return r;
467 }
e537352b 468
a16e1123
LP		 469 mount_set_state(m, new_state);
470 }
e537352b
LP		 471
472 return 0;
e537352b
LP		 473}
474
475static void mount_dump(Unit *u, FILE *f, const char *prefix) {
476 Mount *m = MOUNT(u);
477 MountParameters *p;
478
479 assert(m);
480 assert(f);
481
482 if (m->from_proc_self_mountinfo)
483 p = &m->parameters_proc_self_mountinfo;
484 else if (m->from_fragment)
485 p = &m->parameters_fragment;
486 else
487 p = &m->parameters_etc_fstab;
488
489 fprintf(f,
490 "%sMount State: %s\n"
491 "%sWhere: %s\n"
492 "%sWhat: %s\n"
493 "%sFile System Type: %s\n"
494 "%sOptions: %s\n"
495 "%sFrom /etc/fstab: %s\n"
496 "%sFrom /proc/self/mountinfo: %s\n"
497 "%sFrom fragment: %s\n"
3e5235b0
LP		 498 "%sKillMode: %s\n"
499 "%sDirectoryMode: %04o\n",
a16e1123 500 prefix, mount_state_to_string(m->state),
e537352b
LP		 501 prefix, m->where,
502 prefix, strna(p->what),
503 prefix, strna(p->fstype),
504 prefix, strna(p->options),
505 prefix, yes_no(m->from_etc_fstab),
506 prefix, yes_no(m->from_proc_self_mountinfo),
507 prefix, yes_no(m->from_fragment),
3e5235b0
LP		 508 prefix, kill_mode_to_string(m->kill_mode),
509 prefix, m->directory_mode);
e537352b
LP		 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,
1e3ad081 537 true,
c3686083 538 m->meta.manager->confirm_spawn,
4cd1fbcc 539 m->meta.cgroup_bondings,
a16e1123
LP		 540 &pid)) < 0)
541 goto fail;
542
543 if ((r = unit_watch_pid(UNIT(m), pid)) < 0)
544 /* FIXME: we need to do something here */
545 goto fail;
546
547 *_pid = pid;
548
549 return 0;
550
551fail:
552 unit_unwatch_timer(UNIT(m), &m->timer_watch);
553
554 return r;
555}
556
e537352b
LP		 557static void mount_enter_dead(Mount *m, bool success) {
558 assert(m);
559
560 if (!success)
561 m->failure = true;
562
18c78fb1 563 mount_set_state(m, m->failure ? MOUNT_MAINTENANCE : MOUNT_DEAD);
e537352b
LP		 564}
565
80876c20
LP		 566static void mount_enter_mounted(Mount *m, bool success) {
567 assert(m);
568
569 if (!success)
570 m->failure = true;
571
572 mount_set_state(m, MOUNT_MOUNTED);
573}
574
e537352b
LP		 575static void mount_enter_signal(Mount *m, MountState state, bool success) {
576 int r;
80876c20 577 bool sent = false;
e537352b
LP		 578
579 assert(m);
580
581 if (!success)
582 m->failure = true;
583
80876c20
LP		 584 if (m->kill_mode != KILL_NONE) {
585 int sig = (state == MOUNT_MOUNTING_SIGTERM ||
586 state == MOUNT_UNMOUNTING_SIGTERM ||
587 state == MOUNT_REMOUNTING_SIGTERM) ? SIGTERM : SIGKILL;
e537352b
LP		 588
589 if (m->kill_mode == KILL_CONTROL_GROUP) {
590
4cd1fbcc 591 if ((r = cgroup_bonding_kill_list(m->meta.cgroup_bondings, sig)) < 0) {
e537352b
LP		 592 if (r != -EAGAIN && r != -ESRCH)
593 goto fail;
594 } else
595 sent = true;
596 }
597
80876c20 598 if (!sent && m->control_pid > 0)
e537352b
LP		 599 if (kill(m->kill_mode == KILL_PROCESS ? m->control_pid : -m->control_pid, sig) < 0 && errno != ESRCH) {
600 r = -errno;
601 goto fail;
602 }
603 }
604
80876c20
LP		 605 if (sent) {
606 if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
607 goto fail;
e537352b 608
80876c20
LP		 609 mount_set_state(m, state);
610 } else if (state == MOUNT_REMOUNTING_SIGTERM || state == MOUNT_REMOUNTING_SIGKILL)
611 mount_enter_mounted(m, true);
612 else
e537352b
LP		 613 mount_enter_dead(m, true);
614
615 return;
616
617fail:
4cd1fbcc 618 log_warning("%s failed to kill processes: %s", m->meta.id, strerror(-r));
e537352b 619
80876c20
LP		 620 if (state == MOUNT_REMOUNTING_SIGTERM || state == MOUNT_REMOUNTING_SIGKILL)
621 mount_enter_mounted(m, false);
622 else
623 mount_enter_dead(m, false);
e537352b
LP		 624}
625
626static void mount_enter_unmounting(Mount *m, bool success) {
e537352b
LP		 627 int r;
628
629 assert(m);
630
631 if (!success)
632 m->failure = true;
633
a16e1123
LP		 634 m->control_command_id = MOUNT_EXEC_UNMOUNT;
635 m->control_command = m->exec_command + MOUNT_EXEC_UNMOUNT;
e537352b
LP		 636
637 if ((r = exec_command_set(
a16e1123 638 m->control_command,
e537352b
LP		 639 "/bin/umount",
640 m->where,
641 NULL)) < 0)
642 goto fail;
643
a16e1123 644 mount_unwatch_control_pid(m);
5e94833f 645
a16e1123 646 if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
e537352b
LP		 647 goto fail;
648
649 mount_set_state(m, MOUNT_UNMOUNTING);
650
651 return;
652
653fail:
4cd1fbcc 654 log_warning("%s failed to run 'umount' task: %s", m->meta.id, strerror(-r));
e537352b
LP		 655 mount_enter_mounted(m, false);
656}
657
8d567588 658static void mount_enter_mounting(Mount *m) {
e537352b
LP		 659 int r;
660
661 assert(m);
662
a16e1123
LP		 663 m->control_command_id = MOUNT_EXEC_MOUNT;
664 m->control_command = m->exec_command + MOUNT_EXEC_MOUNT;
e537352b 665
3e5235b0
LP		 666 mkdir_p(m->where, m->directory_mode);
667
e537352b
LP		 668 if (m->from_fragment)
669 r = exec_command_set(
a16e1123 670 m->control_command,
e537352b
LP		 671 "/bin/mount",
672 m->parameters_fragment.what,
673 m->where,
674 "-t", m->parameters_fragment.fstype,
8d567588 675 m->parameters_fragment.options ? "-o" : NULL, m->parameters_fragment.options,
e537352b
LP		 676 NULL);
677 else if (m->from_etc_fstab)
678 r = exec_command_set(
a16e1123 679 m->control_command,
e537352b
LP		 680 "/bin/mount",
681 m->where,
682 NULL);
683 else
684 r = -ENOENT;
685
686 if (r < 0)
687 goto fail;
688
a16e1123 689 mount_unwatch_control_pid(m);
5e94833f 690
a16e1123 691 if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
e537352b
LP		 692 goto fail;
693
694 mount_set_state(m, MOUNT_MOUNTING);
695
696 return;
697
698fail:
4cd1fbcc 699 log_warning("%s failed to run 'mount' task: %s", m->meta.id, strerror(-r));
e537352b
LP		 700 mount_enter_dead(m, false);
701}
702
8d567588 703static void mount_enter_mounting_done(Mount *m) {
e537352b
LP		 704 assert(m);
705
e537352b
LP		 706 mount_set_state(m, MOUNT_MOUNTING_DONE);
707}
708
709static void mount_enter_remounting(Mount *m, bool success) {
e537352b
LP		 710 int r;
711
712 assert(m);
713
714 if (!success)
715 m->failure = true;
716
a16e1123
LP		 717 m->control_command_id = MOUNT_EXEC_REMOUNT;
718 m->control_command = m->exec_command + MOUNT_EXEC_REMOUNT;
e537352b
LP		 719
720 if (m->from_fragment) {
721 char *buf = NULL;
722 const char *o;
723
724 if (m->parameters_fragment.options) {
725 if (!(buf = strappend("remount,", m->parameters_fragment.options))) {
726 r = -ENOMEM;
727 goto fail;
728 }
729
730 o = buf;
731 } else
732 o = "remount";
733
734 r = exec_command_set(
a16e1123 735 m->control_command,
e537352b
LP		 736 "/bin/mount",
737 m->parameters_fragment.what,
738 m->where,
739 "-t", m->parameters_fragment.fstype,
740 "-o", o,
741 NULL);
742
743 free(buf);
744 } else if (m->from_etc_fstab)
745 r = exec_command_set(
a16e1123 746 m->control_command,
e537352b
LP		 747 "/bin/mount",
748 m->where,
749 "-o", "remount",
750 NULL);
751 else
752 r = -ENOENT;
753
754 if (r < 0) {
755 r = -ENOMEM;
756 goto fail;
757 }
758
a16e1123 759 mount_unwatch_control_pid(m);
5e94833f 760
a16e1123 761 if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
e537352b
LP		 762 goto fail;
763
764 mount_set_state(m, MOUNT_REMOUNTING);
765
766 return;
767
768fail:
769 mount_enter_mounted(m, false);
770}
771
772static int mount_start(Unit *u) {
773 Mount *m = MOUNT(u);
774
775 assert(m);
776
777 /* We cannot fulfill this request right now, try again later
778 * please! */
779 if (m->state == MOUNT_UNMOUNTING ||
780 m->state == MOUNT_UNMOUNTING_SIGTERM ||
781 m->state == MOUNT_UNMOUNTING_SIGKILL)
782 return -EAGAIN;
783
784 /* Already on it! */
785 if (m->state == MOUNT_MOUNTING ||
786 m->state == MOUNT_MOUNTING_SIGTERM ||
787 m->state == MOUNT_MOUNTING_SIGKILL)
788 return 0;
789
18c78fb1 790 assert(m->state == MOUNT_DEAD || m->state == MOUNT_MAINTENANCE);
e537352b
LP		 791
792 m->failure = false;
8d567588 793 mount_enter_mounting(m);
e537352b
LP		 794 return 0;
795}
796
797static int mount_stop(Unit *u) {
798 Mount *m = MOUNT(u);
799
800 assert(m);
801
802 /* Cann't do this right now. */
803 if (m->state == MOUNT_MOUNTING ||
804 m->state == MOUNT_MOUNTING_DONE ||
805 m->state == MOUNT_MOUNTING_SIGTERM ||
806 m->state == MOUNT_MOUNTING_SIGKILL ||
807 m->state == MOUNT_REMOUNTING ||
808 m->state == MOUNT_REMOUNTING_SIGTERM ||
809 m->state == MOUNT_REMOUNTING_SIGKILL)
810 return -EAGAIN;
811
812 /* Already on it */
813 if (m->state == MOUNT_UNMOUNTING ||
814 m->state == MOUNT_UNMOUNTING_SIGKILL ||
815 m->state == MOUNT_UNMOUNTING_SIGTERM)
816 return 0;
817
818 assert(m->state == MOUNT_MOUNTED);
819
820 mount_enter_unmounting(m, true);
821 return 0;
822}
823
824static int mount_reload(Unit *u) {
825 Mount *m = MOUNT(u);
826
827 assert(m);
828
829 if (m->state == MOUNT_MOUNTING_DONE)
830 return -EAGAIN;
831
832 assert(m->state == MOUNT_MOUNTED);
833
834 mount_enter_remounting(m, true);
835 return 0;
836}
837
a16e1123
LP		 838static int mount_serialize(Unit *u, FILE *f, FDSet *fds) {
839 Mount *m = MOUNT(u);
840
841 assert(m);
842 assert(f);
843 assert(fds);
844
845 unit_serialize_item(u, f, "state", mount_state_to_string(m->state));
846 unit_serialize_item(u, f, "failure", yes_no(m->failure));
847
848 if (m->control_pid > 0)
5925dd3c 849 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) m->control_pid);
a16e1123
LP		 850
851 if (m->control_command_id >= 0)
852 unit_serialize_item(u, f, "control-command", mount_exec_command_to_string(m->control_command_id));
853
854 return 0;
855}
856
857static int mount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
858 Mount *m = MOUNT(u);
859 int r;
860
861 assert(u);
862 assert(key);
863 assert(value);
864 assert(fds);
865
866 if (streq(key, "state")) {
867 MountState state;
868
869 if ((state = mount_state_from_string(value)) < 0)
870 log_debug("Failed to parse state value %s", value);
871 else
872 m->deserialized_state = state;
873 } else if (streq(key, "failure")) {
874 int b;
875
876 if ((b = parse_boolean(value)) < 0)
877 log_debug("Failed to parse failure value %s", value);
878 else
879 m->failure = b || m->failure;
880
881 } else if (streq(key, "control-pid")) {
5925dd3c 882 pid_t pid;
a16e1123 883
5925dd3c 884 if ((r = parse_pid(value, &pid)) < 0)
a16e1123
LP		 885 log_debug("Failed to parse control-pid value %s", value);
886 else
5925dd3c 887 m->control_pid = pid;
a16e1123
LP		 888 } else if (streq(key, "control-command")) {
889 MountExecCommand id;
890
891 if ((id = mount_exec_command_from_string(value)) < 0)
892 log_debug("Failed to parse exec-command value %s", value);
893 else {
894 m->control_command_id = id;
895 m->control_command = m->exec_command + id;
896 }
897
898 } else
899 log_debug("Unknown serialization key '%s'", key);
900
901 return 0;
902}
903
e537352b
LP		 904static UnitActiveState mount_active_state(Unit *u) {
905 assert(u);
906
907 return state_translation_table[MOUNT(u)->state];
908}
909
10a94420
LP		 910static const char *mount_sub_state_to_string(Unit *u) {
911 assert(u);
912
a16e1123 913 return mount_state_to_string(MOUNT(u)->state);
10a94420
LP		 914}
915
701cc384
LP		 916static bool mount_check_gc(Unit *u) {
917 Mount *m = MOUNT(u);
918
919 assert(m);
920
921 return m->from_etc_fstab || m->from_proc_self_mountinfo;
922}
923
e537352b
LP		 924static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) {
925 Mount *m = MOUNT(u);
926 bool success;
927
928 assert(m);
929 assert(pid >= 0);
930
8c47c732
LP		 931 if (pid != m->control_pid)
932 return;
e537352b 933
e537352b
LP		 934 m->control_pid = 0;
935
8c47c732
LP		 936 success = is_clean_exit(code, status);
937 m->failure = m->failure || !success;
938
a16e1123 939 if (m->control_command) {
b58b4116 940 exec_status_exit(&m->control_command->exec_status, pid, code, status);
a16e1123
LP		 941 m->control_command = NULL;
942 m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
943 }
944
9e2f7c11 945 log_debug("%s control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
e537352b
LP		 946
947 /* Note that mount(8) returning and the kernel sending us a
948 * mount table change event might happen out-of-order. If an
949 * operation succeed we assume the kernel will follow soon too
950 * and already change into the resulting state. If it fails
951 * we check if the kernel still knows about the mount. and
952 * change state accordingly. */
953
954 switch (m->state) {
955
956 case MOUNT_MOUNTING:
957 case MOUNT_MOUNTING_DONE:
958 case MOUNT_MOUNTING_SIGKILL:
959 case MOUNT_MOUNTING_SIGTERM:
960 case MOUNT_REMOUNTING:
961 case MOUNT_REMOUNTING_SIGKILL:
962 case MOUNT_REMOUNTING_SIGTERM:
963
19b160fa 964 if (success)
e537352b
LP		 965 mount_enter_mounted(m, true);
966 else if (m->from_proc_self_mountinfo)
967 mount_enter_mounted(m, false);
968 else
969 mount_enter_dead(m, false);
970 break;
971
972 case MOUNT_UNMOUNTING:
973 case MOUNT_UNMOUNTING_SIGKILL:
974 case MOUNT_UNMOUNTING_SIGTERM:
975
976 if (success)
977 mount_enter_dead(m, true);
978 else if (m->from_proc_self_mountinfo)
979 mount_enter_mounted(m, false);
980 else
981 mount_enter_dead(m, false);
982 break;
983
984 default:
985 assert_not_reached("Uh, control process died at wrong time.");
986 }
987}
988
989static void mount_timer_event(Unit *u, uint64_t elapsed, Watch *w) {
990 Mount *m = MOUNT(u);
991
992 assert(m);
993 assert(elapsed == 1);
994 assert(w == &m->timer_watch);
995
996 switch (m->state) {
997
998 case MOUNT_MOUNTING:
999 case MOUNT_MOUNTING_DONE:
9e2f7c11 1000 log_warning("%s mounting timed out. Stopping.", u->meta.id);
e537352b
LP		 1001 mount_enter_signal(m, MOUNT_MOUNTING_SIGTERM, false);
1002 break;
1003
1004 case MOUNT_REMOUNTING:
9e2f7c11 1005 log_warning("%s remounting timed out. Stopping.", u->meta.id);
e537352b
LP		 1006 mount_enter_signal(m, MOUNT_REMOUNTING_SIGTERM, false);
1007 break;
1008
1009 case MOUNT_UNMOUNTING:
9e2f7c11 1010 log_warning("%s unmounting timed out. Stopping.", u->meta.id);
e537352b
LP		 1011 mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, false);
1012 break;
1013
1014 case MOUNT_MOUNTING_SIGTERM:
9e2f7c11 1015 log_warning("%s mounting timed out. Killing.", u->meta.id);
e537352b
LP		 1016 mount_enter_signal(m, MOUNT_MOUNTING_SIGKILL, false);
1017 break;
1018
1019 case MOUNT_REMOUNTING_SIGTERM:
9e2f7c11 1020 log_warning("%s remounting timed out. Killing.", u->meta.id);
e537352b
LP		 1021 mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, false);
1022 break;
1023
1024 case MOUNT_UNMOUNTING_SIGTERM:
9e2f7c11 1025 log_warning("%s unmounting timed out. Killing.", u->meta.id);
e537352b
LP		 1026 mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, false);
1027 break;
1028
1029 case MOUNT_MOUNTING_SIGKILL:
1030 case MOUNT_REMOUNTING_SIGKILL:
1031 case MOUNT_UNMOUNTING_SIGKILL:
9e2f7c11 1032 log_warning("%s mount process still around after SIGKILL. Ignoring.", u->meta.id);
e537352b
LP		 1033
1034 if (m->from_proc_self_mountinfo)
1035 mount_enter_mounted(m, false);
1036 else
1037 mount_enter_dead(m, false);
1038 break;
1039
1040 default:
1041 assert_not_reached("Timeout at wrong time.");
1042 }
1043}
1044
1045static int mount_add_one(
1046 Manager *m,
1047 const char *what,
1048 const char *where,
1049 const char *options,
1050 const char *fstype,
1051 bool from_proc_self_mountinfo,
1052 bool set_flags) {
b08d03ff
LP		 1053 int r;
1054 Unit *u;
1055 bool delete;
e537352b 1056 char *e, *w = NULL, *o = NULL, *f = NULL;
4e85aff4 1057 MountParameters *p;
b08d03ff 1058
f50e0a01 1059 assert(m);
b08d03ff
LP		 1060 assert(what);
1061 assert(where);
e537352b
LP		 1062 assert(options);
1063 assert(fstype);
1064
1065 assert(!set_flags || from_proc_self_mountinfo);
1066
1067 /* Ignore API mount points. They should never be referenced in
1068 * dependencies ever. */
1069 if (mount_point_is_api(where))
1070 return 0;
b08d03ff 1071
8d567588
LP		 1072 if (streq(fstype, "autofs"))
1073 return 0;
1074
4e85aff4
LP		 1075 /* probably some kind of swap, ignore */
1076 if (!is_path(where))
b08d03ff
LP		 1077 return 0;
1078
a16e1123 1079 if (!(e = unit_name_from_path(where, ".mount")))
b08d03ff
LP		 1080 return -ENOMEM;
1081
1082 if (!(u = manager_get_unit(m, e))) {
1083 delete = true;
1084
1085 if (!(u = unit_new(m))) {
1086 free(e);
1087 return -ENOMEM;
1088 }
1089
1090 r = unit_add_name(u, e);
1091 free(e);
1092
1093 if (r < 0)
1094 goto fail;
1095
e537352b 1096 if (!(MOUNT(u)->where = strdup(where))) {
07b0b134
ML		 1097 r = -ENOMEM;
1098 goto fail;
1099 }
f50e0a01 1100
f94ea366 1101 unit_add_to_load_queue(u);
b08d03ff
LP		 1102 } else {
1103 delete = false;
1104 free(e);
1105 }
1106
e537352b
LP		 1107 if (!(w = strdup(what)) ||
1108 !(o = strdup(options)) ||
1109 !(f = strdup(fstype))) {
1110 r = -ENOMEM;
1111 goto fail;
1112 }
1113
1114 if (from_proc_self_mountinfo) {
4e85aff4 1115 p = &MOUNT(u)->parameters_proc_self_mountinfo;
e537352b
LP		 1116
1117 if (set_flags) {
1118 MOUNT(u)->is_mounted = true;
1119 MOUNT(u)->just_mounted = !MOUNT(u)->from_proc_self_mountinfo;
4e85aff4 1120 MOUNT(u)->just_changed = !streq_ptr(p->options, o);
e537352b 1121 }
ef734fd6 1122
f50e0a01 1123 MOUNT(u)->from_proc_self_mountinfo = true;
ef734fd6 1124 } else {
4e85aff4 1125 p = &MOUNT(u)->parameters_etc_fstab;
f50e0a01 1126 MOUNT(u)->from_etc_fstab = true;
ef734fd6 1127 }
f50e0a01 1128
4e85aff4
LP		 1129 free(p->what);
1130 p->what = w;
b08d03ff 1131
4e85aff4
LP		 1132 free(p->options);
1133 p->options = o;
e537352b 1134
4e85aff4
LP		 1135 free(p->fstype);
1136 p->fstype = f;
b08d03ff 1137
c1e1601e
LP		 1138 unit_add_to_dbus_queue(u);
1139
b08d03ff
LP		 1140 return 0;
1141
1142fail:
e537352b
LP		 1143 free(w);
1144 free(o);
1145 free(f);
1146
b08d03ff
LP		 1147 if (delete && u)
1148 unit_free(u);
1149
4e85aff4 1150 return r;
b08d03ff
LP		 1151}
1152
1153static char *fstab_node_to_udev_node(char *p) {
1154 char *dn, *t;
1155 int r;
1156
1157 /* FIXME: to follow udev's logic 100% we need to leave valid
1158 * UTF8 chars unescaped */
1159
1160 if (startswith(p, "LABEL=")) {
1161
f50e0a01 1162 if (!(t = xescape(p+6, "/ ")))
b08d03ff
LP		 1163 return NULL;
1164
f50e0a01 1165 r = asprintf(&dn, "/dev/disk/by-label/%s", t);
b08d03ff
LP		 1166 free(t);
1167
1168 if (r < 0)
1169 return NULL;
1170
1171 return dn;
1172 }
1173
1174 if (startswith(p, "UUID=")) {
1175
f50e0a01 1176 if (!(t = xescape(p+5, "/ ")))
b08d03ff
LP		 1177 return NULL;
1178
f50e0a01 1179 r = asprintf(&dn, "/dev/disk/by-uuid/%s", ascii_strlower(t));
b08d03ff
LP		 1180 free(t);
1181
1182 if (r < 0)
1183 return NULL;
1184
1185 return dn;
1186 }
1187
1188 return strdup(p);
1189}
1190
07b0b134
ML		 1191static int mount_find_pri(char *options) {
1192 char *end, *pri;
1193 unsigned long r;
1194
1195 if (!(pri = mount_test_option(options, "pri=")))
1196 return 0;
1197
1198 pri += 4;
1199
1200 errno = 0;
1201 r = strtoul(pri, &end, 10);
1202
1203 if (errno != 0)
1204 return -errno;
1205
1206 if (end == pri || (*end != ',' && *end != 0))
1207 return -EINVAL;
1208
1209 return (int) r;
1210}
1211
e537352b 1212static int mount_load_etc_fstab(Manager *m) {
b08d03ff
LP		 1213 FILE *f;
1214 int r;
1215 struct mntent* me;
1216
1217 assert(m);
1218
1219 errno = 0;
1220 if (!(f = setmntent("/etc/fstab", "r")))
1221 return -errno;
1222
1223 while ((me = getmntent(f))) {
1224 char *where, *what;
1225
1226 if (!(what = fstab_node_to_udev_node(me->mnt_fsname))) {
1227 r = -ENOMEM;
1228 goto finish;
1229 }
1230
1231 if (!(where = strdup(me->mnt_dir))) {
1232 free(what);
1233 r = -ENOMEM;
1234 goto finish;
1235 }
1236
1237 if (what[0] == '/')
1238 path_kill_slashes(what);
1239
1240 if (where[0] == '/')
1241 path_kill_slashes(where);
1242
07b0b134
ML		 1243 if (streq(me->mnt_type, "swap")) {
1244 int pri;
1245
1246 if ((pri = mount_find_pri(me->mnt_opts)) < 0)
1247 r = pri;
1248 else
1249 r = swap_add_one(m,
1250 what,
07b0b134 1251 pri,
4e85aff4
LP		 1252 !!mount_test_option(me->mnt_opts, MNTOPT_NOAUTO),
1253 !!mount_test_option(me->mnt_opts, "comment=systemd.swapon"),
07b0b134
ML		 1254 false);
1255 } else
1256 r = mount_add_one(m, what, where, me->mnt_opts, me->mnt_type, false, false);
1257
b08d03ff
LP		 1258 free(what);
1259 free(where);
1260
1261 if (r < 0)
1262 goto finish;
1263 }
1264
1265 r = 0;
1266finish:
1267
1268 endmntent(f);
1269 return r;
1270}
1271
ef734fd6 1272static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) {
b08d03ff 1273 int r;
a2e0f3d3 1274 char *device, *path, *options, *options2, *fstype, *d, *p, *o;
b08d03ff
LP		 1275
1276 assert(m);
1277
ef734fd6 1278 rewind(m->proc_self_mountinfo);
b08d03ff
LP		 1279
1280 for (;;) {
1281 int k;
e537352b 1282
a2e0f3d3 1283 device = path = options = options2 = fstype = d = p = o = NULL;
b08d03ff 1284
ef734fd6 1285 if ((k = fscanf(m->proc_self_mountinfo,
b08d03ff
LP		 1286 "%*s " /* (1) mount id */
1287 "%*s " /* (2) parent id */
1288 "%*s " /* (3) major:minor */
1289 "%*s " /* (4) root */
1290 "%ms " /* (5) mount point */
e537352b 1291 "%ms" /* (6) mount options */
b08d03ff
LP		 1292 "%*[^-]" /* (7) optional fields */
1293 "- " /* (8) seperator */
e537352b 1294 "%ms " /* (9) file system type */
ef734fd6 1295 "%ms" /* (10) mount source */
a2e0f3d3 1296 "%ms" /* (11) mount options 2 */
ef734fd6 1297 "%*[^\n]", /* some rubbish at the end */
b08d03ff 1298 &path,
e537352b
LP		 1299 &options,
1300 &fstype,
a2e0f3d3
LP		 1301 &device,
1302 &options2)) != 5) {
b08d03ff 1303
ef734fd6
LP		 1304 if (k == EOF)
1305 break;
b08d03ff 1306
e537352b
LP		 1307 r = -EBADMSG;
1308 goto finish;
b08d03ff
LP		 1309 }
1310
a2e0f3d3
LP		 1311 if (asprintf(&o, "%s,%s", options, options2) < 0) {
1312 r = -ENOMEM;
1313 goto finish;
1314 }
1315
e537352b
LP		 1316 if (!(d = cunescape(device)) ||
1317 !(p = cunescape(path))) {
1318 r = -ENOMEM;
1319 goto finish;
b08d03ff 1320 }
b08d03ff 1321
a2e0f3d3 1322 if ((r = mount_add_one(m, d, p, o, fstype, true, set_flags)) < 0)
e537352b 1323 goto finish;
b08d03ff 1324
e537352b
LP		 1325 free(device);
1326 free(path);
1327 free(options);
a2e0f3d3 1328 free(options2);
e537352b 1329 free(fstype);
b08d03ff
LP		 1330 free(d);
1331 free(p);
a2e0f3d3 1332 free(o);
b08d03ff
LP		 1333 }
1334
e537352b
LP		 1335 r = 0;
1336
1337finish:
1338 free(device);
1339 free(path);
1340 free(options);
a2e0f3d3 1341 free(options2);
e537352b
LP		 1342 free(fstype);
1343 free(d);
1344 free(p);
a2e0f3d3 1345 free(o);
e537352b
LP		 1346
1347 return r;
1348}
1349
1350static void mount_shutdown(Manager *m) {
1351 assert(m);
1352
a16e1123 1353 if (m->proc_self_mountinfo) {
e537352b 1354 fclose(m->proc_self_mountinfo);
a16e1123
LP		 1355 m->proc_self_mountinfo = NULL;
1356 }
b08d03ff
LP		 1357}
1358
1359static int mount_enumerate(Manager *m) {
1360 int r;
ef734fd6 1361 struct epoll_event ev;
b08d03ff
LP		 1362 assert(m);
1363
a16e1123
LP		 1364 if (!m->proc_self_mountinfo) {
1365 if (!(m->proc_self_mountinfo = fopen("/proc/self/mountinfo", "re")))
1366 return -errno;
ef734fd6 1367
a16e1123
LP		 1368 m->mount_watch.type = WATCH_MOUNT;
1369 m->mount_watch.fd = fileno(m->proc_self_mountinfo);
ef734fd6 1370
a16e1123
LP		 1371 zero(ev);
1372 ev.events = EPOLLERR;
1373 ev.data.ptr = &m->mount_watch;
ef734fd6 1374
a16e1123
LP		 1375 if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->mount_watch.fd, &ev) < 0)
1376 return -errno;
1377 }
ef734fd6 1378
e537352b 1379 if ((r = mount_load_etc_fstab(m)) < 0)
b08d03ff
LP		 1380 goto fail;
1381
ef734fd6 1382 if ((r = mount_load_proc_self_mountinfo(m, false)) < 0)
b08d03ff
LP		 1383 goto fail;
1384
1385 return 0;
1386
1387fail:
1388 mount_shutdown(m);
1389 return r;
5cb5a6ff
LP		 1390}
1391
ef734fd6
LP		 1392void mount_fd_event(Manager *m, int events) {
1393 Meta *meta;
1394 int r;
1395
1396 assert(m);
f94ea366 1397 assert(events == EPOLLERR);
ef734fd6
LP		 1398
1399 /* The manager calls this for every fd event happening on the
1400 * /proc/self/mountinfo file, which informs us about mounting
1401 * table changes */
1402
1403 if ((r = mount_load_proc_self_mountinfo(m, true)) < 0) {
d9a76d8f 1404 log_error("Failed to reread /proc/self/mountinfo: %s", strerror(errno));
e537352b
LP		 1405
1406 /* Reset flags, just in case, for later calls */
1407 LIST_FOREACH(units_per_type, meta, m->units_per_type[UNIT_MOUNT]) {
1408 Mount *mount = (Mount*) meta;
1409
1410 mount->is_mounted = mount->just_mounted = mount->just_changed = false;
1411 }
1412
ef734fd6
LP		 1413 return;
1414 }
1415
1416 manager_dispatch_load_queue(m);
1417
1418 LIST_FOREACH(units_per_type, meta, m->units_per_type[UNIT_MOUNT]) {
1419 Mount *mount = (Mount*) meta;
1420
e537352b
LP		 1421 if (!mount->is_mounted) {
1422 /* This has just been unmounted. */
1423
ef734fd6 1424 mount->from_proc_self_mountinfo = false;
e537352b
LP		 1425
1426 switch (mount->state) {
1427
1428 case MOUNT_MOUNTED:
1429 mount_enter_dead(mount, true);
1430 break;
1431
1432 default:
1433 mount_set_state(mount, mount->state);
1434 break;
1435
1436 }
1437
1438 } else if (mount->just_mounted || mount->just_changed) {
1439
1440 /* New or changed entrymount */
1441
1442 switch (mount->state) {
1443
1444 case MOUNT_DEAD:
18c78fb1 1445 case MOUNT_MAINTENANCE:
e537352b
LP		 1446 mount_enter_mounted(mount, true);
1447 break;
1448
1449 case MOUNT_MOUNTING:
8d567588 1450 mount_enter_mounting_done(mount);
e537352b
LP		 1451 break;
1452
1453 default:
1454 /* Nothing really changed, but let's
1455 * issue an notification call
1456 * nonetheless, in case somebody is
1457 * waiting for this. (e.g. file system
1458 * ro/rw remounts.) */
1459 mount_set_state(mount, mount->state);
1460 break;
1461 }
1462 }
1463
1464 /* Reset the flags for later calls */
1465 mount->is_mounted = mount->just_mounted = mount->just_changed = false;
1466 }
1467}
1468
1469int mount_path_is_mounted(Manager *m, const char* path) {
1470 char *t;
1471 int r;
1472
1473 assert(m);
1474 assert(path);
1475
1476 if (path[0] != '/')
1477 return 1;
1478
1479 if (!(t = strdup(path)))
1480 return -ENOMEM;
1481
1482 path_kill_slashes(t);
1483
1484 for (;;) {
1485 char *e, *slash;
1486 Unit *u;
1487
a16e1123 1488 if (!(e = unit_name_from_path(t, ".mount"))) {
e537352b
LP		 1489 r = -ENOMEM;
1490 goto finish;
1491 }
1492
1493 u = manager_get_unit(m, e);
1494 free(e);
1495
1496 if (u &&
1497 (MOUNT(u)->from_etc_fstab || MOUNT(u)->from_fragment) &&
1498 MOUNT(u)->state != MOUNT_MOUNTED) {
1499 r = 0;
1500 goto finish;
ef734fd6
LP		 1501 }
1502
e537352b
LP		 1503 assert_se(slash = strrchr(t, '/'));
1504
1505 if (slash == t) {
1506 r = 1;
1507 goto finish;
1508 }
1509
1510 *slash = 0;
ef734fd6 1511 }
e537352b
LP		 1512
1513 r = 1;
1514
1515finish:
1516 free(t);
1517 return r;
ef734fd6
LP		 1518}
1519
a16e1123
LP		 1520static const char* const mount_state_table[_MOUNT_STATE_MAX] = {
1521 [MOUNT_DEAD] = "dead",
1522 [MOUNT_MOUNTING] = "mounting",
1523 [MOUNT_MOUNTING_DONE] = "mounting-done",
1524 [MOUNT_MOUNTED] = "mounted",
1525 [MOUNT_REMOUNTING] = "remounting",
1526 [MOUNT_UNMOUNTING] = "unmounting",
1527 [MOUNT_MOUNTING_SIGTERM] = "mounting-sigterm",
1528 [MOUNT_MOUNTING_SIGKILL] = "mounting-sigkill",
1529 [MOUNT_REMOUNTING_SIGTERM] = "remounting-sigterm",
1530 [MOUNT_REMOUNTING_SIGKILL] = "remounting-sigkill",
1531 [MOUNT_UNMOUNTING_SIGTERM] = "unmounting-sigterm",
1532 [MOUNT_UNMOUNTING_SIGKILL] = "unmounting-sigkill",
18c78fb1 1533 [MOUNT_MAINTENANCE] = "maintenance"
a16e1123
LP		 1534};
1535
1536DEFINE_STRING_TABLE_LOOKUP(mount_state, MountState);
1537
1538static const char* const mount_exec_command_table[_MOUNT_EXEC_COMMAND_MAX] = {
1539 [MOUNT_EXEC_MOUNT] = "ExecMount",
1540 [MOUNT_EXEC_UNMOUNT] = "ExecUnmount",
1541 [MOUNT_EXEC_REMOUNT] = "ExecRemount",
1542};
1543
1544DEFINE_STRING_TABLE_LOOKUP(mount_exec_command, MountExecCommand);
1545
87f0e418 1546const UnitVTable mount_vtable = {
5cb5a6ff
LP		 1547 .suffix = ".mount",
1548
e537352b 1549 .no_alias = true,
9e2f7c11 1550 .no_instances = true,
c497c7a9 1551 .no_isolate = true,
9e58ff9c 1552 .show_status = true,
e537352b
LP		 1553
1554 .init = mount_init,
1555 .load = mount_load,
034c6ed7 1556 .done = mount_done,
e537352b 1557
f50e0a01
LP		 1558 .coldplug = mount_coldplug,
1559
034c6ed7 1560 .dump = mount_dump,
5cb5a6ff 1561
e537352b
LP		 1562 .start = mount_start,
1563 .stop = mount_stop,
1564 .reload = mount_reload,
1565
a16e1123
LP		 1566 .serialize = mount_serialize,
1567 .deserialize_item = mount_deserialize_item,
1568
f50e0a01 1569 .active_state = mount_active_state,
10a94420 1570 .sub_state_to_string = mount_sub_state_to_string,
b08d03ff 1571
701cc384
LP		 1572 .check_gc = mount_check_gc,
1573
e537352b
LP		 1574 .sigchld_event = mount_sigchld_event,
1575 .timer_event = mount_timer_event,
1576
4139c1b2
LP		 1577 .bus_message_handler = bus_mount_message_handler,
1578
f50e0a01
LP		 1579 .enumerate = mount_enumerate,
1580 .shutdown = mount_shutdown
5cb5a6ff 1581};
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