1 /*-*- Mode: C; c-basic-offset: 8 -*-*/
4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
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.
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.
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/>.
25 #include <sys/epoll.h>
30 #include "load-fragment.h"
31 #include "load-dropin.h"
34 #include "mount-setup.h"
35 #include "unit-name.h"
37 #include "dbus-mount.h"
40 static const UnitActiveState state_translation_table[_MOUNT_STATE_MAX] = {
41 [MOUNT_DEAD] = UNIT_INACTIVE,
42 [MOUNT_MOUNTING] = UNIT_ACTIVATING,
43 [MOUNT_MOUNTING_DONE] = UNIT_ACTIVE,
44 [MOUNT_MOUNTED] = UNIT_ACTIVE,
45 [MOUNT_REMOUNTING] = UNIT_ACTIVE_RELOADING,
46 [MOUNT_UNMOUNTING] = UNIT_DEACTIVATING,
47 [MOUNT_MOUNTING_SIGTERM] = UNIT_DEACTIVATING,
48 [MOUNT_MOUNTING_SIGKILL] = UNIT_DEACTIVATING,
49 [MOUNT_REMOUNTING_SIGTERM] = UNIT_ACTIVE_RELOADING,
50 [MOUNT_REMOUNTING_SIGKILL] = UNIT_ACTIVE_RELOADING,
51 [MOUNT_UNMOUNTING_SIGTERM] = UNIT_DEACTIVATING,
52 [MOUNT_UNMOUNTING_SIGKILL] = UNIT_DEACTIVATING,
53 [MOUNT_MAINTENANCE] = UNIT_INACTIVE_MAINTENANCE
56 static void mount_init(Unit *u) {
60 assert(u->meta.load_state == UNIT_STUB);
62 m->timeout_usec = DEFAULT_TIMEOUT_USEC;
63 exec_context_init(&m->exec_context);
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;
71 m->timer_watch.type = WATCH_INVALID;
73 m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
76 static void mount_unwatch_control_pid(Mount *m) {
79 if (m->control_pid <= 0)
82 unit_unwatch_pid(UNIT(m), m->control_pid);
86 static void mount_parameters_done(MountParameters *p) {
93 p->what = p->options = p->fstype = NULL;
96 static void mount_done(Unit *u) {
104 mount_parameters_done(&m->parameters_etc_fstab);
105 mount_parameters_done(&m->parameters_proc_self_mountinfo);
106 mount_parameters_done(&m->parameters_fragment);
108 exec_context_done(&m->exec_context);
109 exec_command_done_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX);
110 m->control_command = NULL;
112 mount_unwatch_control_pid(m);
114 unit_unwatch_timer(u, &m->timer_watch);
117 static int mount_add_mount_links(Mount *m) {
123 /* Adds in links to other mount points that might lie below or
124 * above us in the hierarchy */
126 LIST_FOREACH(units_per_type, other, m->meta.manager->units_per_type[UNIT_MOUNT]) {
127 Mount *n = (Mount*) other;
132 if (n->meta.load_state != UNIT_LOADED)
135 if (path_startswith(m->where, n->where)) {
137 if ((r = unit_add_dependency(UNIT(m), UNIT_AFTER, UNIT(n), true)) < 0)
140 if (n->from_etc_fstab || n->from_fragment)
141 if ((r = unit_add_dependency(UNIT(m), UNIT_REQUIRES, UNIT(n), true)) < 0)
144 } else if (path_startswith(n->where, m->where)) {
146 if ((r = unit_add_dependency(UNIT(m), UNIT_BEFORE, UNIT(n), true)) < 0)
149 if (m->from_etc_fstab || m->from_fragment)
150 if ((r = unit_add_dependency(UNIT(n), UNIT_REQUIRES, UNIT(m), true)) < 0)
158 static int mount_add_swap_links(Mount *m) {
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)
171 static int mount_add_path_links(Mount *m) {
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)
184 static int mount_add_automount_links(Mount *m) {
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)
197 static int mount_add_socket_links(Mount *m) {
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)
210 static char* mount_test_option(const char *haystack, const char *needle) {
215 /* Like glibc's hasmntopt(), but works on a string, not a
222 me.mnt_opts = (char*) haystack;
224 return hasmntopt(&me, needle);
227 static int mount_add_target_links(Mount *m) {
232 bool noauto, handle, automount, user;
236 if (m->from_fragment)
237 p = &m->parameters_fragment;
238 else if (m->from_etc_fstab)
239 p = &m->parameters_etc_fstab;
243 noauto = !!mount_test_option(p->options, MNTOPT_NOAUTO);
244 user = mount_test_option(p->options, "user") || mount_test_option(p->options, "users");
245 handle = !!mount_test_option(p->options, "comment=systemd.mount");
246 automount = !!mount_test_option(p->options, "comment=systemd.automount");
248 if (mount_test_option(p->options, "_netdev") ||
249 fstype_is_network(p->fstype))
250 target = SPECIAL_REMOTE_FS_TARGET;
252 target = SPECIAL_LOCAL_FS_TARGET;
254 if ((r = manager_load_unit(m->meta.manager, target, NULL, &tu)) < 0)
257 if (automount && m->meta.manager->running_as == MANAGER_SYSTEM) {
260 if ((r = unit_load_related_unit(UNIT(m), ".automount", &am)) < 0)
263 if ((r = unit_add_dependency(tu, UNIT_WANTS, UNIT(am), true)) < 0)
266 return unit_add_dependency(UNIT(am), UNIT_BEFORE, tu, true);
270 if (!noauto && handle)
271 if (user || m->meta.manager->running_as == MANAGER_SYSTEM)
272 if ((r = unit_add_dependency(tu, UNIT_WANTS, UNIT(m), true)) < 0)
275 return unit_add_dependency(UNIT(m), UNIT_BEFORE, tu, true);
279 static int mount_verify(Mount *m) {
284 if (m->meta.load_state != UNIT_LOADED)
287 if (!m->from_etc_fstab && !m->from_fragment && !m->from_proc_self_mountinfo)
290 if (!(e = unit_name_from_path(m->where, ".mount")))
293 b = unit_has_name(UNIT(m), e);
297 log_error("%s's Where setting doesn't match unit name. Refusing.", m->meta.id);
301 if (m->meta.fragment_path && !m->parameters_fragment.what) {
302 log_error("%s's What setting is missing. Refusing.", m->meta.id);
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);
314 static int mount_load(Unit *u) {
319 assert(u->meta.load_state == UNIT_STUB);
321 if ((r = unit_load_fragment_and_dropin_optional(u)) < 0)
324 /* This is a new unit? Then let's add in some extras */
325 if (u->meta.load_state == UNIT_LOADED) {
326 const char *what = NULL;
328 if (m->meta.fragment_path)
329 m->from_fragment = true;
332 if (!(m->where = unit_name_to_path(u->meta.id)))
335 path_kill_slashes(m->where);
337 if (!m->meta.description)
338 if ((r = unit_set_description(u, m->where)) < 0)
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;
349 if ((r = unit_add_node_link(u, what, u->meta.manager->running_as == MANAGER_SYSTEM)) < 0)
352 if ((r = mount_add_mount_links(m)) < 0)
355 if ((r = mount_add_socket_links(m)) < 0)
358 if ((r = mount_add_swap_links(m)) < 0)
361 if ((r = mount_add_path_links(m)) < 0)
364 if ((r = mount_add_automount_links(m)) < 0)
367 if ((r = mount_add_target_links(m)) < 0)
370 if ((r = unit_add_default_cgroup(u)) < 0)
374 return mount_verify(m);
377 static int mount_notify_automount(Mount *m, int status) {
383 if ((r = unit_get_related_unit(UNIT(m), ".automount", &p)) < 0)
384 return r == -ENOENT ? 0 : r;
386 return automount_send_ready(AUTOMOUNT(p), status);
389 static void mount_set_state(Mount *m, MountState state) {
390 MountState old_state;
393 old_state = m->state;
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);
407 mount_unwatch_control_pid(m);
408 m->control_command = NULL;
409 m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
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 ||
423 state == MOUNT_MAINTENANCE)
424 mount_notify_automount(m, -ENODEV);
426 if (state != old_state)
427 log_debug("%s changed %s -> %s",
429 mount_state_to_string(old_state),
430 mount_state_to_string(state));
432 unit_notify(UNIT(m), state_translation_table[old_state], state_translation_table[state]);
435 static int mount_coldplug(Unit *u) {
437 MountState new_state = MOUNT_DEAD;
441 assert(m->state == MOUNT_DEAD);
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;
448 if (new_state != m->state) {
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) {
461 if (m->control_pid <= 0)
464 if ((r = unit_watch_pid(UNIT(m), m->control_pid)) < 0)
467 if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
471 mount_set_state(m, new_state);
477 static void mount_dump(Unit *u, FILE *f, const char *prefix) {
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;
489 p = &m->parameters_etc_fstab;
492 "%sMount State: %s\n"
495 "%sFile System Type: %s\n"
497 "%sFrom /etc/fstab: %s\n"
498 "%sFrom /proc/self/mountinfo: %s\n"
499 "%sFrom fragment: %s\n"
501 prefix, mount_state_to_string(m->state),
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));
511 if (m->control_pid > 0)
513 "%sControl PID: %lu\n",
514 prefix, (unsigned long) m->control_pid);
516 exec_context_dump(&m->exec_context, f, prefix);
519 static int mount_spawn(Mount *m, ExecCommand *c, pid_t *_pid) {
527 if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
530 if ((r = exec_spawn(c,
534 m->meta.manager->environment,
537 m->meta.manager->confirm_spawn,
538 m->meta.cgroup_bondings,
542 if ((r = unit_watch_pid(UNIT(m), pid)) < 0)
543 /* FIXME: we need to do something here */
551 unit_unwatch_timer(UNIT(m), &m->timer_watch);
556 static void mount_enter_dead(Mount *m, bool success) {
562 mount_set_state(m, m->failure ? MOUNT_MAINTENANCE : MOUNT_DEAD);
565 static void mount_enter_mounted(Mount *m, bool success) {
571 mount_set_state(m, MOUNT_MOUNTED);
574 static void mount_enter_signal(Mount *m, MountState state, bool success) {
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;
588 if (m->kill_mode == KILL_CONTROL_GROUP) {
590 if ((r = cgroup_bonding_kill_list(m->meta.cgroup_bondings, sig)) < 0) {
591 if (r != -EAGAIN && r != -ESRCH)
597 if (!sent && m->control_pid > 0)
598 if (kill(m->kill_mode == KILL_PROCESS ? m->control_pid : -m->control_pid, sig) < 0 && errno != ESRCH) {
605 if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
608 mount_set_state(m, state);
609 } else if (state == MOUNT_REMOUNTING_SIGTERM || state == MOUNT_REMOUNTING_SIGKILL)
610 mount_enter_mounted(m, true);
612 mount_enter_dead(m, true);
617 log_warning("%s failed to kill processes: %s", m->meta.id, strerror(-r));
619 if (state == MOUNT_REMOUNTING_SIGTERM || state == MOUNT_REMOUNTING_SIGKILL)
620 mount_enter_mounted(m, false);
622 mount_enter_dead(m, false);
625 static void mount_enter_unmounting(Mount *m, bool success) {
633 m->control_command_id = MOUNT_EXEC_UNMOUNT;
634 m->control_command = m->exec_command + MOUNT_EXEC_UNMOUNT;
636 if ((r = exec_command_set(
643 mount_unwatch_control_pid(m);
645 if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
648 mount_set_state(m, MOUNT_UNMOUNTING);
653 log_warning("%s failed to run 'umount' task: %s", m->meta.id, strerror(-r));
654 mount_enter_mounted(m, false);
657 static void mount_enter_mounting(Mount *m) {
662 m->control_command_id = MOUNT_EXEC_MOUNT;
663 m->control_command = m->exec_command + MOUNT_EXEC_MOUNT;
665 if (m->from_fragment)
666 r = exec_command_set(
669 m->parameters_fragment.what,
671 "-t", m->parameters_fragment.fstype,
672 m->parameters_fragment.options ? "-o" : NULL, m->parameters_fragment.options,
674 else if (m->from_etc_fstab)
675 r = exec_command_set(
686 mount_unwatch_control_pid(m);
688 if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
691 mount_set_state(m, MOUNT_MOUNTING);
696 log_warning("%s failed to run 'mount' task: %s", m->meta.id, strerror(-r));
697 mount_enter_dead(m, false);
700 static void mount_enter_mounting_done(Mount *m) {
703 mount_set_state(m, MOUNT_MOUNTING_DONE);
706 static void mount_enter_remounting(Mount *m, bool success) {
714 m->control_command_id = MOUNT_EXEC_REMOUNT;
715 m->control_command = m->exec_command + MOUNT_EXEC_REMOUNT;
717 if (m->from_fragment) {
721 if (m->parameters_fragment.options) {
722 if (!(buf = strappend("remount,", m->parameters_fragment.options))) {
731 r = exec_command_set(
734 m->parameters_fragment.what,
736 "-t", m->parameters_fragment.fstype,
741 } else if (m->from_etc_fstab)
742 r = exec_command_set(
756 mount_unwatch_control_pid(m);
758 if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
761 mount_set_state(m, MOUNT_REMOUNTING);
766 mount_enter_mounted(m, false);
769 static int mount_start(Unit *u) {
774 /* We cannot fulfill this request right now, try again later
776 if (m->state == MOUNT_UNMOUNTING ||
777 m->state == MOUNT_UNMOUNTING_SIGTERM ||
778 m->state == MOUNT_UNMOUNTING_SIGKILL)
782 if (m->state == MOUNT_MOUNTING ||
783 m->state == MOUNT_MOUNTING_SIGTERM ||
784 m->state == MOUNT_MOUNTING_SIGKILL)
787 assert(m->state == MOUNT_DEAD || m->state == MOUNT_MAINTENANCE);
790 mount_enter_mounting(m);
794 static int mount_stop(Unit *u) {
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)
810 if (m->state == MOUNT_UNMOUNTING ||
811 m->state == MOUNT_UNMOUNTING_SIGKILL ||
812 m->state == MOUNT_UNMOUNTING_SIGTERM)
815 assert(m->state == MOUNT_MOUNTED);
817 mount_enter_unmounting(m, true);
821 static int mount_reload(Unit *u) {
826 if (m->state == MOUNT_MOUNTING_DONE)
829 assert(m->state == MOUNT_MOUNTED);
831 mount_enter_remounting(m, true);
835 static int mount_serialize(Unit *u, FILE *f, FDSet *fds) {
842 unit_serialize_item(u, f, "state", mount_state_to_string(m->state));
843 unit_serialize_item(u, f, "failure", yes_no(m->failure));
845 if (m->control_pid > 0)
846 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) m->control_pid);
848 if (m->control_command_id >= 0)
849 unit_serialize_item(u, f, "control-command", mount_exec_command_to_string(m->control_command_id));
854 static int mount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
863 if (streq(key, "state")) {
866 if ((state = mount_state_from_string(value)) < 0)
867 log_debug("Failed to parse state value %s", value);
869 m->deserialized_state = state;
870 } else if (streq(key, "failure")) {
873 if ((b = parse_boolean(value)) < 0)
874 log_debug("Failed to parse failure value %s", value);
876 m->failure = b || m->failure;
878 } else if (streq(key, "control-pid")) {
881 if ((r = parse_pid(value, &pid)) < 0)
882 log_debug("Failed to parse control-pid value %s", value);
884 m->control_pid = pid;
885 } else if (streq(key, "control-command")) {
888 if ((id = mount_exec_command_from_string(value)) < 0)
889 log_debug("Failed to parse exec-command value %s", value);
891 m->control_command_id = id;
892 m->control_command = m->exec_command + id;
896 log_debug("Unknown serialization key '%s'", key);
901 static UnitActiveState mount_active_state(Unit *u) {
904 return state_translation_table[MOUNT(u)->state];
907 static const char *mount_sub_state_to_string(Unit *u) {
910 return mount_state_to_string(MOUNT(u)->state);
913 static bool mount_check_gc(Unit *u) {
918 return m->from_etc_fstab || m->from_proc_self_mountinfo;
921 static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) {
928 if (pid != m->control_pid)
933 success = is_clean_exit(code, status);
934 m->failure = m->failure || !success;
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;
942 log_debug("%s control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
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. */
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:
962 mount_enter_mounted(m, true);
963 else if (m->from_proc_self_mountinfo)
964 mount_enter_mounted(m, false);
966 mount_enter_dead(m, false);
969 case MOUNT_UNMOUNTING:
970 case MOUNT_UNMOUNTING_SIGKILL:
971 case MOUNT_UNMOUNTING_SIGTERM:
974 mount_enter_dead(m, true);
975 else if (m->from_proc_self_mountinfo)
976 mount_enter_mounted(m, false);
978 mount_enter_dead(m, false);
982 assert_not_reached("Uh, control process died at wrong time.");
986 static void mount_timer_event(Unit *u, uint64_t elapsed, Watch *w) {
990 assert(elapsed == 1);
991 assert(w == &m->timer_watch);
996 case MOUNT_MOUNTING_DONE:
997 log_warning("%s mounting timed out. Stopping.", u->meta.id);
998 mount_enter_signal(m, MOUNT_MOUNTING_SIGTERM, false);
1001 case MOUNT_REMOUNTING:
1002 log_warning("%s remounting timed out. Stopping.", u->meta.id);
1003 mount_enter_signal(m, MOUNT_REMOUNTING_SIGTERM, false);
1006 case MOUNT_UNMOUNTING:
1007 log_warning("%s unmounting timed out. Stopping.", u->meta.id);
1008 mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, false);
1011 case MOUNT_MOUNTING_SIGTERM:
1012 log_warning("%s mounting timed out. Killing.", u->meta.id);
1013 mount_enter_signal(m, MOUNT_MOUNTING_SIGKILL, false);
1016 case MOUNT_REMOUNTING_SIGTERM:
1017 log_warning("%s remounting timed out. Killing.", u->meta.id);
1018 mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, false);
1021 case MOUNT_UNMOUNTING_SIGTERM:
1022 log_warning("%s unmounting timed out. Killing.", u->meta.id);
1023 mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, false);
1026 case MOUNT_MOUNTING_SIGKILL:
1027 case MOUNT_REMOUNTING_SIGKILL:
1028 case MOUNT_UNMOUNTING_SIGKILL:
1029 log_warning("%s mount process still around after SIGKILL. Ignoring.", u->meta.id);
1031 if (m->from_proc_self_mountinfo)
1032 mount_enter_mounted(m, false);
1034 mount_enter_dead(m, false);
1038 assert_not_reached("Timeout at wrong time.");
1042 static int mount_add_one(
1046 const char *options,
1048 bool from_proc_self_mountinfo,
1053 char *e, *w = NULL, *o = NULL, *f = NULL;
1062 assert(!set_flags || from_proc_self_mountinfo);
1064 /* Ignore API mount points. They should never be referenced in
1065 * dependencies ever. */
1066 if (mount_point_is_api(where))
1069 if (streq(fstype, "autofs"))
1072 /* probably some kind of swap, ignore */
1073 if (!is_path(where))
1076 if (!(e = unit_name_from_path(where, ".mount")))
1079 if (!(u = manager_get_unit(m, e))) {
1082 if (!(u = unit_new(m))) {
1087 r = unit_add_name(u, e);
1093 if (!(MOUNT(u)->where = strdup(where))) {
1098 unit_add_to_load_queue(u);
1104 if (!(w = strdup(what)) ||
1105 !(o = strdup(options)) ||
1106 !(f = strdup(fstype))) {
1111 if (from_proc_self_mountinfo) {
1112 p = &MOUNT(u)->parameters_proc_self_mountinfo;
1115 MOUNT(u)->is_mounted = true;
1116 MOUNT(u)->just_mounted = !MOUNT(u)->from_proc_self_mountinfo;
1117 MOUNT(u)->just_changed = !streq_ptr(p->options, o);
1120 MOUNT(u)->from_proc_self_mountinfo = true;
1122 p = &MOUNT(u)->parameters_etc_fstab;
1123 MOUNT(u)->from_etc_fstab = true;
1135 unit_add_to_dbus_queue(u);
1150 static char *fstab_node_to_udev_node(char *p) {
1154 /* FIXME: to follow udev's logic 100% we need to leave valid
1155 * UTF8 chars unescaped */
1157 if (startswith(p, "LABEL=")) {
1159 if (!(t = xescape(p+6, "/ ")))
1162 r = asprintf(&dn, "/dev/disk/by-label/%s", t);
1171 if (startswith(p, "UUID=")) {
1173 if (!(t = xescape(p+5, "/ ")))
1176 r = asprintf(&dn, "/dev/disk/by-uuid/%s", ascii_strlower(t));
1188 static int mount_find_pri(char *options) {
1192 if (!(pri = mount_test_option(options, "pri=")))
1198 r = strtoul(pri, &end, 10);
1203 if (end == pri || (*end != ',' && *end != 0))
1209 static int mount_load_etc_fstab(Manager *m) {
1217 if (!(f = setmntent("/etc/fstab", "r")))
1220 while ((me = getmntent(f))) {
1223 if (!(what = fstab_node_to_udev_node(me->mnt_fsname))) {
1228 if (!(where = strdup(me->mnt_dir))) {
1235 path_kill_slashes(what);
1237 if (where[0] == '/')
1238 path_kill_slashes(where);
1240 if (streq(me->mnt_type, "swap")) {
1243 if ((pri = mount_find_pri(me->mnt_opts)) < 0)
1249 !!mount_test_option(me->mnt_opts, MNTOPT_NOAUTO),
1250 !!mount_test_option(me->mnt_opts, "comment=systemd.swapon"),
1253 r = mount_add_one(m, what, where, me->mnt_opts, me->mnt_type, false, false);
1269 static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) {
1271 char *device, *path, *options, *options2, *fstype, *d, *p, *o;
1275 rewind(m->proc_self_mountinfo);
1280 device = path = options = options2 = fstype = d = p = o = NULL;
1282 if ((k = fscanf(m->proc_self_mountinfo,
1283 "%*s " /* (1) mount id */
1284 "%*s " /* (2) parent id */
1285 "%*s " /* (3) major:minor */
1286 "%*s " /* (4) root */
1287 "%ms " /* (5) mount point */
1288 "%ms" /* (6) mount options */
1289 "%*[^-]" /* (7) optional fields */
1290 "- " /* (8) seperator */
1291 "%ms " /* (9) file system type */
1292 "%ms" /* (10) mount source */
1293 "%ms" /* (11) mount options 2 */
1294 "%*[^\n]", /* some rubbish at the end */
1308 if (asprintf(&o, "%s,%s", options, options2) < 0) {
1313 if (!(d = cunescape(device)) ||
1314 !(p = cunescape(path))) {
1319 if ((r = mount_add_one(m, d, p, o, fstype, true, set_flags)) < 0)
1347 static void mount_shutdown(Manager *m) {
1350 if (m->proc_self_mountinfo) {
1351 fclose(m->proc_self_mountinfo);
1352 m->proc_self_mountinfo = NULL;
1356 static int mount_enumerate(Manager *m) {
1358 struct epoll_event ev;
1361 if (!m->proc_self_mountinfo) {
1362 if (!(m->proc_self_mountinfo = fopen("/proc/self/mountinfo", "re")))
1365 m->mount_watch.type = WATCH_MOUNT;
1366 m->mount_watch.fd = fileno(m->proc_self_mountinfo);
1369 ev.events = EPOLLERR;
1370 ev.data.ptr = &m->mount_watch;
1372 if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->mount_watch.fd, &ev) < 0)
1376 if ((r = mount_load_etc_fstab(m)) < 0)
1379 if ((r = mount_load_proc_self_mountinfo(m, false)) < 0)
1389 void mount_fd_event(Manager *m, int events) {
1394 assert(events == EPOLLERR);
1396 /* The manager calls this for every fd event happening on the
1397 * /proc/self/mountinfo file, which informs us about mounting
1400 if ((r = mount_load_proc_self_mountinfo(m, true)) < 0) {
1401 log_error("Failed to reread /proc/self/mountinfo: %s", strerror(errno));
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;
1407 mount->is_mounted = mount->just_mounted = mount->just_changed = false;
1413 manager_dispatch_load_queue(m);
1415 LIST_FOREACH(units_per_type, meta, m->units_per_type[UNIT_MOUNT]) {
1416 Mount *mount = (Mount*) meta;
1418 if (!mount->is_mounted) {
1419 /* This has just been unmounted. */
1421 mount->from_proc_self_mountinfo = false;
1423 switch (mount->state) {
1426 mount_enter_dead(mount, true);
1430 mount_set_state(mount, mount->state);
1435 } else if (mount->just_mounted || mount->just_changed) {
1437 /* New or changed entrymount */
1439 switch (mount->state) {
1442 case MOUNT_MAINTENANCE:
1443 mount_enter_mounted(mount, true);
1446 case MOUNT_MOUNTING:
1447 mount_enter_mounting_done(mount);
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);
1461 /* Reset the flags for later calls */
1462 mount->is_mounted = mount->just_mounted = mount->just_changed = false;
1466 int mount_path_is_mounted(Manager *m, const char* path) {
1476 if (!(t = strdup(path)))
1479 path_kill_slashes(t);
1485 if (!(e = unit_name_from_path(t, ".mount"))) {
1490 u = manager_get_unit(m, e);
1494 (MOUNT(u)->from_etc_fstab || MOUNT(u)->from_fragment) &&
1495 MOUNT(u)->state != MOUNT_MOUNTED) {
1500 assert_se(slash = strrchr(t, '/'));
1517 static 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",
1530 [MOUNT_MAINTENANCE] = "maintenance"
1533 DEFINE_STRING_TABLE_LOOKUP(mount_state, MountState);
1535 static 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",
1541 DEFINE_STRING_TABLE_LOOKUP(mount_exec_command, MountExecCommand);
1543 const UnitVTable mount_vtable = {
1547 .no_instances = true,
1554 .coldplug = mount_coldplug,
1558 .start = mount_start,
1560 .reload = mount_reload,
1562 .serialize = mount_serialize,
1563 .deserialize_item = mount_deserialize_item,
1565 .active_state = mount_active_state,
1566 .sub_state_to_string = mount_sub_state_to_string,
1568 .check_gc = mount_check_gc,
1570 .sigchld_event = mount_sigchld_event,
1571 .timer_event = mount_timer_event,
1573 .bus_message_handler = bus_mount_message_handler,
1575 .enumerate = mount_enumerate,
1576 .shutdown = mount_shutdown