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,
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);
309 static int mount_load(Unit *u) {
314 assert(u->meta.load_state == UNIT_STUB);
316 if ((r = unit_load_fragment_and_dropin_optional(u)) < 0)
319 /* This is a new unit? Then let's add in some extras */
320 if (u->meta.load_state == UNIT_LOADED) {
321 const char *what = NULL;
323 if (m->meta.fragment_path)
324 m->from_fragment = true;
327 if (!(m->where = unit_name_to_path(u->meta.id)))
330 path_kill_slashes(m->where);
332 if (!m->meta.description)
333 if ((r = unit_set_description(u, m->where)) < 0)
336 if (m->from_fragment && m->parameters_fragment.what)
337 what = m->parameters_fragment.what;
338 else if (m->from_etc_fstab && m->parameters_etc_fstab.what)
339 what = m->parameters_etc_fstab.what;
340 else if (m->from_proc_self_mountinfo && m->parameters_proc_self_mountinfo.what)
341 what = m->parameters_proc_self_mountinfo.what;
344 if ((r = unit_add_node_link(u, what, u->meta.manager->running_as == MANAGER_SYSTEM)) < 0)
347 if ((r = mount_add_mount_links(m)) < 0)
350 if ((r = mount_add_socket_links(m)) < 0)
353 if ((r = mount_add_swap_links(m)) < 0)
356 if ((r = mount_add_path_links(m)) < 0)
359 if ((r = mount_add_automount_links(m)) < 0)
362 if ((r = mount_add_target_links(m)) < 0)
365 if ((r = unit_add_default_cgroup(u)) < 0)
369 return mount_verify(m);
372 static int mount_notify_automount(Mount *m, int status) {
378 if ((r = unit_get_related_unit(UNIT(m), ".automount", &p)) < 0)
379 return r == -ENOENT ? 0 : r;
381 return automount_send_ready(AUTOMOUNT(p), status);
384 static void mount_set_state(Mount *m, MountState state) {
385 MountState old_state;
388 old_state = m->state;
391 if (state != MOUNT_MOUNTING &&
392 state != MOUNT_MOUNTING_DONE &&
393 state != MOUNT_REMOUNTING &&
394 state != MOUNT_UNMOUNTING &&
395 state != MOUNT_MOUNTING_SIGTERM &&
396 state != MOUNT_MOUNTING_SIGKILL &&
397 state != MOUNT_UNMOUNTING_SIGTERM &&
398 state != MOUNT_UNMOUNTING_SIGKILL &&
399 state != MOUNT_REMOUNTING_SIGTERM &&
400 state != MOUNT_REMOUNTING_SIGKILL) {
401 unit_unwatch_timer(UNIT(m), &m->timer_watch);
402 mount_unwatch_control_pid(m);
403 m->control_command = NULL;
404 m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
407 if (state == MOUNT_MOUNTED ||
408 state == MOUNT_REMOUNTING)
409 mount_notify_automount(m, 0);
410 else if (state == MOUNT_DEAD ||
411 state == MOUNT_UNMOUNTING ||
412 state == MOUNT_MOUNTING_SIGTERM ||
413 state == MOUNT_MOUNTING_SIGKILL ||
414 state == MOUNT_REMOUNTING_SIGTERM ||
415 state == MOUNT_REMOUNTING_SIGKILL ||
416 state == MOUNT_UNMOUNTING_SIGTERM ||
417 state == MOUNT_UNMOUNTING_SIGKILL ||
418 state == MOUNT_MAINTENANCE)
419 mount_notify_automount(m, -ENODEV);
421 if (state != old_state)
422 log_debug("%s changed %s -> %s",
424 mount_state_to_string(old_state),
425 mount_state_to_string(state));
427 unit_notify(UNIT(m), state_translation_table[old_state], state_translation_table[state]);
430 static int mount_coldplug(Unit *u) {
432 MountState new_state = MOUNT_DEAD;
436 assert(m->state == MOUNT_DEAD);
438 if (m->deserialized_state != m->state)
439 new_state = m->deserialized_state;
440 else if (m->from_proc_self_mountinfo)
441 new_state = MOUNT_MOUNTED;
443 if (new_state != m->state) {
445 if (new_state == MOUNT_MOUNTING ||
446 new_state == MOUNT_MOUNTING_DONE ||
447 new_state == MOUNT_REMOUNTING ||
448 new_state == MOUNT_UNMOUNTING ||
449 new_state == MOUNT_MOUNTING_SIGTERM ||
450 new_state == MOUNT_MOUNTING_SIGKILL ||
451 new_state == MOUNT_UNMOUNTING_SIGTERM ||
452 new_state == MOUNT_UNMOUNTING_SIGKILL ||
453 new_state == MOUNT_REMOUNTING_SIGTERM ||
454 new_state == MOUNT_REMOUNTING_SIGKILL) {
456 if (m->control_pid <= 0)
459 if ((r = unit_watch_pid(UNIT(m), m->control_pid)) < 0)
462 if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
466 mount_set_state(m, new_state);
472 static void mount_dump(Unit *u, FILE *f, const char *prefix) {
479 if (m->from_proc_self_mountinfo)
480 p = &m->parameters_proc_self_mountinfo;
481 else if (m->from_fragment)
482 p = &m->parameters_fragment;
484 p = &m->parameters_etc_fstab;
487 "%sMount State: %s\n"
490 "%sFile System Type: %s\n"
492 "%sFrom /etc/fstab: %s\n"
493 "%sFrom /proc/self/mountinfo: %s\n"
494 "%sFrom fragment: %s\n"
496 prefix, mount_state_to_string(m->state),
498 prefix, strna(p->what),
499 prefix, strna(p->fstype),
500 prefix, strna(p->options),
501 prefix, yes_no(m->from_etc_fstab),
502 prefix, yes_no(m->from_proc_self_mountinfo),
503 prefix, yes_no(m->from_fragment),
504 prefix, kill_mode_to_string(m->kill_mode));
506 if (m->control_pid > 0)
508 "%sControl PID: %lu\n",
509 prefix, (unsigned long) m->control_pid);
511 exec_context_dump(&m->exec_context, f, prefix);
514 static int mount_spawn(Mount *m, ExecCommand *c, pid_t *_pid) {
522 if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
525 if ((r = exec_spawn(c,
529 m->meta.manager->environment,
532 m->meta.manager->confirm_spawn,
533 m->meta.cgroup_bondings,
537 if ((r = unit_watch_pid(UNIT(m), pid)) < 0)
538 /* FIXME: we need to do something here */
546 unit_unwatch_timer(UNIT(m), &m->timer_watch);
551 static void mount_enter_dead(Mount *m, bool success) {
557 mount_set_state(m, m->failure ? MOUNT_MAINTENANCE : MOUNT_DEAD);
560 static void mount_enter_mounted(Mount *m, bool success) {
566 mount_set_state(m, MOUNT_MOUNTED);
569 static void mount_enter_signal(Mount *m, MountState state, bool success) {
578 if (m->kill_mode != KILL_NONE) {
579 int sig = (state == MOUNT_MOUNTING_SIGTERM ||
580 state == MOUNT_UNMOUNTING_SIGTERM ||
581 state == MOUNT_REMOUNTING_SIGTERM) ? SIGTERM : SIGKILL;
583 if (m->kill_mode == KILL_CONTROL_GROUP) {
585 if ((r = cgroup_bonding_kill_list(m->meta.cgroup_bondings, sig)) < 0) {
586 if (r != -EAGAIN && r != -ESRCH)
592 if (!sent && m->control_pid > 0)
593 if (kill(m->kill_mode == KILL_PROCESS ? m->control_pid : -m->control_pid, sig) < 0 && errno != ESRCH) {
600 if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
603 mount_set_state(m, state);
604 } else if (state == MOUNT_REMOUNTING_SIGTERM || state == MOUNT_REMOUNTING_SIGKILL)
605 mount_enter_mounted(m, true);
607 mount_enter_dead(m, true);
612 log_warning("%s failed to kill processes: %s", m->meta.id, strerror(-r));
614 if (state == MOUNT_REMOUNTING_SIGTERM || state == MOUNT_REMOUNTING_SIGKILL)
615 mount_enter_mounted(m, false);
617 mount_enter_dead(m, false);
620 static void mount_enter_unmounting(Mount *m, bool success) {
628 m->control_command_id = MOUNT_EXEC_UNMOUNT;
629 m->control_command = m->exec_command + MOUNT_EXEC_UNMOUNT;
631 if ((r = exec_command_set(
638 mount_unwatch_control_pid(m);
640 if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
643 mount_set_state(m, MOUNT_UNMOUNTING);
648 log_warning("%s failed to run 'umount' task: %s", m->meta.id, strerror(-r));
649 mount_enter_mounted(m, false);
652 static void mount_enter_mounting(Mount *m) {
657 m->control_command_id = MOUNT_EXEC_MOUNT;
658 m->control_command = m->exec_command + MOUNT_EXEC_MOUNT;
660 if (m->from_fragment)
661 r = exec_command_set(
664 m->parameters_fragment.what,
666 "-t", m->parameters_fragment.fstype,
667 m->parameters_fragment.options ? "-o" : NULL, m->parameters_fragment.options,
669 else if (m->from_etc_fstab)
670 r = exec_command_set(
681 mount_unwatch_control_pid(m);
683 if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
686 mount_set_state(m, MOUNT_MOUNTING);
691 log_warning("%s failed to run 'mount' task: %s", m->meta.id, strerror(-r));
692 mount_enter_dead(m, false);
695 static void mount_enter_mounting_done(Mount *m) {
698 mount_set_state(m, MOUNT_MOUNTING_DONE);
701 static void mount_enter_remounting(Mount *m, bool success) {
709 m->control_command_id = MOUNT_EXEC_REMOUNT;
710 m->control_command = m->exec_command + MOUNT_EXEC_REMOUNT;
712 if (m->from_fragment) {
716 if (m->parameters_fragment.options) {
717 if (!(buf = strappend("remount,", m->parameters_fragment.options))) {
726 r = exec_command_set(
729 m->parameters_fragment.what,
731 "-t", m->parameters_fragment.fstype,
736 } else if (m->from_etc_fstab)
737 r = exec_command_set(
751 mount_unwatch_control_pid(m);
753 if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
756 mount_set_state(m, MOUNT_REMOUNTING);
761 mount_enter_mounted(m, false);
764 static int mount_start(Unit *u) {
769 /* We cannot fulfill this request right now, try again later
771 if (m->state == MOUNT_UNMOUNTING ||
772 m->state == MOUNT_UNMOUNTING_SIGTERM ||
773 m->state == MOUNT_UNMOUNTING_SIGKILL)
777 if (m->state == MOUNT_MOUNTING ||
778 m->state == MOUNT_MOUNTING_SIGTERM ||
779 m->state == MOUNT_MOUNTING_SIGKILL)
782 assert(m->state == MOUNT_DEAD || m->state == MOUNT_MAINTENANCE);
785 mount_enter_mounting(m);
789 static int mount_stop(Unit *u) {
794 /* Cann't do this right now. */
795 if (m->state == MOUNT_MOUNTING ||
796 m->state == MOUNT_MOUNTING_DONE ||
797 m->state == MOUNT_MOUNTING_SIGTERM ||
798 m->state == MOUNT_MOUNTING_SIGKILL ||
799 m->state == MOUNT_REMOUNTING ||
800 m->state == MOUNT_REMOUNTING_SIGTERM ||
801 m->state == MOUNT_REMOUNTING_SIGKILL)
805 if (m->state == MOUNT_UNMOUNTING ||
806 m->state == MOUNT_UNMOUNTING_SIGKILL ||
807 m->state == MOUNT_UNMOUNTING_SIGTERM)
810 assert(m->state == MOUNT_MOUNTED);
812 mount_enter_unmounting(m, true);
816 static int mount_reload(Unit *u) {
821 if (m->state == MOUNT_MOUNTING_DONE)
824 assert(m->state == MOUNT_MOUNTED);
826 mount_enter_remounting(m, true);
830 static int mount_serialize(Unit *u, FILE *f, FDSet *fds) {
837 unit_serialize_item(u, f, "state", mount_state_to_string(m->state));
838 unit_serialize_item(u, f, "failure", yes_no(m->failure));
840 if (m->control_pid > 0)
841 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) m->control_pid);
843 if (m->control_command_id >= 0)
844 unit_serialize_item(u, f, "control-command", mount_exec_command_to_string(m->control_command_id));
849 static int mount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
858 if (streq(key, "state")) {
861 if ((state = mount_state_from_string(value)) < 0)
862 log_debug("Failed to parse state value %s", value);
864 m->deserialized_state = state;
865 } else if (streq(key, "failure")) {
868 if ((b = parse_boolean(value)) < 0)
869 log_debug("Failed to parse failure value %s", value);
871 m->failure = b || m->failure;
873 } else if (streq(key, "control-pid")) {
876 if ((r = parse_pid(value, &pid)) < 0)
877 log_debug("Failed to parse control-pid value %s", value);
879 m->control_pid = pid;
880 } else if (streq(key, "control-command")) {
883 if ((id = mount_exec_command_from_string(value)) < 0)
884 log_debug("Failed to parse exec-command value %s", value);
886 m->control_command_id = id;
887 m->control_command = m->exec_command + id;
891 log_debug("Unknown serialization key '%s'", key);
896 static UnitActiveState mount_active_state(Unit *u) {
899 return state_translation_table[MOUNT(u)->state];
902 static const char *mount_sub_state_to_string(Unit *u) {
905 return mount_state_to_string(MOUNT(u)->state);
908 static bool mount_check_gc(Unit *u) {
913 return m->from_etc_fstab || m->from_proc_self_mountinfo;
916 static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) {
923 if (pid != m->control_pid)
928 success = is_clean_exit(code, status);
929 m->failure = m->failure || !success;
931 if (m->control_command) {
932 exec_status_fill(&m->control_command->exec_status, pid, code, status);
933 m->control_command = NULL;
934 m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
937 log_debug("%s control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
939 /* Note that mount(8) returning and the kernel sending us a
940 * mount table change event might happen out-of-order. If an
941 * operation succeed we assume the kernel will follow soon too
942 * and already change into the resulting state. If it fails
943 * we check if the kernel still knows about the mount. and
944 * change state accordingly. */
949 case MOUNT_MOUNTING_DONE:
950 case MOUNT_MOUNTING_SIGKILL:
951 case MOUNT_MOUNTING_SIGTERM:
952 case MOUNT_REMOUNTING:
953 case MOUNT_REMOUNTING_SIGKILL:
954 case MOUNT_REMOUNTING_SIGTERM:
957 mount_enter_mounted(m, true);
958 else if (m->from_proc_self_mountinfo)
959 mount_enter_mounted(m, false);
961 mount_enter_dead(m, false);
964 case MOUNT_UNMOUNTING:
965 case MOUNT_UNMOUNTING_SIGKILL:
966 case MOUNT_UNMOUNTING_SIGTERM:
969 mount_enter_dead(m, true);
970 else if (m->from_proc_self_mountinfo)
971 mount_enter_mounted(m, false);
973 mount_enter_dead(m, false);
977 assert_not_reached("Uh, control process died at wrong time.");
981 static void mount_timer_event(Unit *u, uint64_t elapsed, Watch *w) {
985 assert(elapsed == 1);
986 assert(w == &m->timer_watch);
991 case MOUNT_MOUNTING_DONE:
992 log_warning("%s mounting timed out. Stopping.", u->meta.id);
993 mount_enter_signal(m, MOUNT_MOUNTING_SIGTERM, false);
996 case MOUNT_REMOUNTING:
997 log_warning("%s remounting timed out. Stopping.", u->meta.id);
998 mount_enter_signal(m, MOUNT_REMOUNTING_SIGTERM, false);
1001 case MOUNT_UNMOUNTING:
1002 log_warning("%s unmounting timed out. Stopping.", u->meta.id);
1003 mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, false);
1006 case MOUNT_MOUNTING_SIGTERM:
1007 log_warning("%s mounting timed out. Killing.", u->meta.id);
1008 mount_enter_signal(m, MOUNT_MOUNTING_SIGKILL, false);
1011 case MOUNT_REMOUNTING_SIGTERM:
1012 log_warning("%s remounting timed out. Killing.", u->meta.id);
1013 mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, false);
1016 case MOUNT_UNMOUNTING_SIGTERM:
1017 log_warning("%s unmounting timed out. Killing.", u->meta.id);
1018 mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, false);
1021 case MOUNT_MOUNTING_SIGKILL:
1022 case MOUNT_REMOUNTING_SIGKILL:
1023 case MOUNT_UNMOUNTING_SIGKILL:
1024 log_warning("%s mount process still around after SIGKILL. Ignoring.", u->meta.id);
1026 if (m->from_proc_self_mountinfo)
1027 mount_enter_mounted(m, false);
1029 mount_enter_dead(m, false);
1033 assert_not_reached("Timeout at wrong time.");
1037 static int mount_add_one(
1041 const char *options,
1043 bool from_proc_self_mountinfo,
1048 char *e, *w = NULL, *o = NULL, *f = NULL;
1057 assert(!set_flags || from_proc_self_mountinfo);
1059 /* Ignore API mount points. They should never be referenced in
1060 * dependencies ever. */
1061 if (mount_point_is_api(where))
1064 if (streq(fstype, "autofs"))
1067 /* probably some kind of swap, ignore */
1068 if (!is_path(where))
1071 if (!(e = unit_name_from_path(where, ".mount")))
1074 if (!(u = manager_get_unit(m, e))) {
1077 if (!(u = unit_new(m))) {
1082 r = unit_add_name(u, e);
1088 if (!(MOUNT(u)->where = strdup(where))) {
1093 unit_add_to_load_queue(u);
1099 if (!(w = strdup(what)) ||
1100 !(o = strdup(options)) ||
1101 !(f = strdup(fstype))) {
1106 if (from_proc_self_mountinfo) {
1107 p = &MOUNT(u)->parameters_proc_self_mountinfo;
1110 MOUNT(u)->is_mounted = true;
1111 MOUNT(u)->just_mounted = !MOUNT(u)->from_proc_self_mountinfo;
1112 MOUNT(u)->just_changed = !streq_ptr(p->options, o);
1115 MOUNT(u)->from_proc_self_mountinfo = true;
1117 p = &MOUNT(u)->parameters_etc_fstab;
1118 MOUNT(u)->from_etc_fstab = true;
1130 unit_add_to_dbus_queue(u);
1145 static char *fstab_node_to_udev_node(char *p) {
1149 /* FIXME: to follow udev's logic 100% we need to leave valid
1150 * UTF8 chars unescaped */
1152 if (startswith(p, "LABEL=")) {
1154 if (!(t = xescape(p+6, "/ ")))
1157 r = asprintf(&dn, "/dev/disk/by-label/%s", t);
1166 if (startswith(p, "UUID=")) {
1168 if (!(t = xescape(p+5, "/ ")))
1171 r = asprintf(&dn, "/dev/disk/by-uuid/%s", ascii_strlower(t));
1183 static int mount_find_pri(char *options) {
1187 if (!(pri = mount_test_option(options, "pri=")))
1193 r = strtoul(pri, &end, 10);
1198 if (end == pri || (*end != ',' && *end != 0))
1204 static int mount_load_etc_fstab(Manager *m) {
1212 if (!(f = setmntent("/etc/fstab", "r")))
1215 while ((me = getmntent(f))) {
1218 if (!(what = fstab_node_to_udev_node(me->mnt_fsname))) {
1223 if (!(where = strdup(me->mnt_dir))) {
1230 path_kill_slashes(what);
1232 if (where[0] == '/')
1233 path_kill_slashes(where);
1235 if (streq(me->mnt_type, "swap")) {
1238 if ((pri = mount_find_pri(me->mnt_opts)) < 0)
1244 !!mount_test_option(me->mnt_opts, MNTOPT_NOAUTO),
1245 !!mount_test_option(me->mnt_opts, "comment=systemd.swapon"),
1248 r = mount_add_one(m, what, where, me->mnt_opts, me->mnt_type, false, false);
1264 static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) {
1266 char *device, *path, *options, *options2, *fstype, *d, *p, *o;
1270 rewind(m->proc_self_mountinfo);
1275 device = path = options = options2 = fstype = d = p = o = NULL;
1277 if ((k = fscanf(m->proc_self_mountinfo,
1278 "%*s " /* (1) mount id */
1279 "%*s " /* (2) parent id */
1280 "%*s " /* (3) major:minor */
1281 "%*s " /* (4) root */
1282 "%ms " /* (5) mount point */
1283 "%ms" /* (6) mount options */
1284 "%*[^-]" /* (7) optional fields */
1285 "- " /* (8) seperator */
1286 "%ms " /* (9) file system type */
1287 "%ms" /* (10) mount source */
1288 "%ms" /* (11) mount options 2 */
1289 "%*[^\n]", /* some rubbish at the end */
1303 if (asprintf(&o, "%s,%s", options, options2) < 0) {
1308 if (!(d = cunescape(device)) ||
1309 !(p = cunescape(path))) {
1314 if ((r = mount_add_one(m, d, p, o, fstype, true, set_flags)) < 0)
1342 static void mount_shutdown(Manager *m) {
1345 if (m->proc_self_mountinfo) {
1346 fclose(m->proc_self_mountinfo);
1347 m->proc_self_mountinfo = NULL;
1351 static int mount_enumerate(Manager *m) {
1353 struct epoll_event ev;
1356 if (!m->proc_self_mountinfo) {
1357 if (!(m->proc_self_mountinfo = fopen("/proc/self/mountinfo", "re")))
1360 m->mount_watch.type = WATCH_MOUNT;
1361 m->mount_watch.fd = fileno(m->proc_self_mountinfo);
1364 ev.events = EPOLLERR;
1365 ev.data.ptr = &m->mount_watch;
1367 if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->mount_watch.fd, &ev) < 0)
1371 if ((r = mount_load_etc_fstab(m)) < 0)
1374 if ((r = mount_load_proc_self_mountinfo(m, false)) < 0)
1384 void mount_fd_event(Manager *m, int events) {
1389 assert(events == EPOLLERR);
1391 /* The manager calls this for every fd event happening on the
1392 * /proc/self/mountinfo file, which informs us about mounting
1395 if ((r = mount_load_proc_self_mountinfo(m, true)) < 0) {
1396 log_error("Failed to reread /proc/self/mountinfo: %s", strerror(errno));
1398 /* Reset flags, just in case, for later calls */
1399 LIST_FOREACH(units_per_type, meta, m->units_per_type[UNIT_MOUNT]) {
1400 Mount *mount = (Mount*) meta;
1402 mount->is_mounted = mount->just_mounted = mount->just_changed = false;
1408 manager_dispatch_load_queue(m);
1410 LIST_FOREACH(units_per_type, meta, m->units_per_type[UNIT_MOUNT]) {
1411 Mount *mount = (Mount*) meta;
1413 if (!mount->is_mounted) {
1414 /* This has just been unmounted. */
1416 mount->from_proc_self_mountinfo = false;
1418 switch (mount->state) {
1421 mount_enter_dead(mount, true);
1425 mount_set_state(mount, mount->state);
1430 } else if (mount->just_mounted || mount->just_changed) {
1432 /* New or changed entrymount */
1434 switch (mount->state) {
1437 case MOUNT_MAINTENANCE:
1438 mount_enter_mounted(mount, true);
1441 case MOUNT_MOUNTING:
1442 mount_enter_mounting_done(mount);
1446 /* Nothing really changed, but let's
1447 * issue an notification call
1448 * nonetheless, in case somebody is
1449 * waiting for this. (e.g. file system
1450 * ro/rw remounts.) */
1451 mount_set_state(mount, mount->state);
1456 /* Reset the flags for later calls */
1457 mount->is_mounted = mount->just_mounted = mount->just_changed = false;
1461 int mount_path_is_mounted(Manager *m, const char* path) {
1471 if (!(t = strdup(path)))
1474 path_kill_slashes(t);
1480 if (!(e = unit_name_from_path(t, ".mount"))) {
1485 u = manager_get_unit(m, e);
1489 (MOUNT(u)->from_etc_fstab || MOUNT(u)->from_fragment) &&
1490 MOUNT(u)->state != MOUNT_MOUNTED) {
1495 assert_se(slash = strrchr(t, '/'));
1512 static const char* const mount_state_table[_MOUNT_STATE_MAX] = {
1513 [MOUNT_DEAD] = "dead",
1514 [MOUNT_MOUNTING] = "mounting",
1515 [MOUNT_MOUNTING_DONE] = "mounting-done",
1516 [MOUNT_MOUNTED] = "mounted",
1517 [MOUNT_REMOUNTING] = "remounting",
1518 [MOUNT_UNMOUNTING] = "unmounting",
1519 [MOUNT_MOUNTING_SIGTERM] = "mounting-sigterm",
1520 [MOUNT_MOUNTING_SIGKILL] = "mounting-sigkill",
1521 [MOUNT_REMOUNTING_SIGTERM] = "remounting-sigterm",
1522 [MOUNT_REMOUNTING_SIGKILL] = "remounting-sigkill",
1523 [MOUNT_UNMOUNTING_SIGTERM] = "unmounting-sigterm",
1524 [MOUNT_UNMOUNTING_SIGKILL] = "unmounting-sigkill",
1525 [MOUNT_MAINTENANCE] = "maintenance"
1528 DEFINE_STRING_TABLE_LOOKUP(mount_state, MountState);
1530 static const char* const mount_exec_command_table[_MOUNT_EXEC_COMMAND_MAX] = {
1531 [MOUNT_EXEC_MOUNT] = "ExecMount",
1532 [MOUNT_EXEC_UNMOUNT] = "ExecUnmount",
1533 [MOUNT_EXEC_REMOUNT] = "ExecRemount",
1536 DEFINE_STRING_TABLE_LOOKUP(mount_exec_command, MountExecCommand);
1538 const UnitVTable mount_vtable = {
1542 .no_instances = true,
1549 .coldplug = mount_coldplug,
1553 .start = mount_start,
1555 .reload = mount_reload,
1557 .serialize = mount_serialize,
1558 .deserialize_item = mount_deserialize_item,
1560 .active_state = mount_active_state,
1561 .sub_state_to_string = mount_sub_state_to_string,
1563 .check_gc = mount_check_gc,
1565 .sigchld_event = mount_sigchld_event,
1566 .timer_event = mount_timer_event,
1568 .bus_message_handler = bus_mount_message_handler,
1570 .enumerate = mount_enumerate,
1571 .shutdown = mount_shutdown