1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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_RELOADING,
46 [MOUNT_UNMOUNTING] = UNIT_DEACTIVATING,
47 [MOUNT_MOUNTING_SIGTERM] = UNIT_DEACTIVATING,
48 [MOUNT_MOUNTING_SIGKILL] = UNIT_DEACTIVATING,
49 [MOUNT_REMOUNTING_SIGTERM] = UNIT_RELOADING,
50 [MOUNT_REMOUNTING_SIGKILL] = UNIT_RELOADING,
51 [MOUNT_UNMOUNTING_SIGTERM] = UNIT_DEACTIVATING,
52 [MOUNT_UNMOUNTING_SIGKILL] = UNIT_DEACTIVATING,
53 [MOUNT_MAINTENANCE] = UNIT_MAINTENANCE
56 static void mount_init(Unit *u) {
60 assert(u->meta.load_state == UNIT_STUB);
62 m->timeout_usec = DEFAULT_TIMEOUT_USEC;
63 m->directory_mode = 0755;
65 exec_context_init(&m->exec_context);
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. */
71 m->exec_context.same_pgrp = true;
73 m->timer_watch.type = WATCH_INVALID;
75 m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
78 static void mount_unwatch_control_pid(Mount *m) {
81 if (m->control_pid <= 0)
84 unit_unwatch_pid(UNIT(m), m->control_pid);
88 static void mount_parameters_done(MountParameters *p) {
95 p->what = p->options = p->fstype = NULL;
98 static void mount_done(Unit *u) {
106 mount_parameters_done(&m->parameters_etc_fstab);
107 mount_parameters_done(&m->parameters_proc_self_mountinfo);
108 mount_parameters_done(&m->parameters_fragment);
110 exec_context_done(&m->exec_context);
111 exec_command_done_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX);
112 m->control_command = NULL;
114 mount_unwatch_control_pid(m);
116 unit_unwatch_timer(u, &m->timer_watch);
119 static int mount_add_mount_links(Mount *m) {
125 /* Adds in links to other mount points that might lie below or
126 * above us in the hierarchy */
128 LIST_FOREACH(units_per_type, other, m->meta.manager->units_per_type[UNIT_MOUNT]) {
129 Mount *n = (Mount*) other;
134 if (n->meta.load_state != UNIT_LOADED)
137 if (path_startswith(m->where, n->where)) {
139 if ((r = unit_add_dependency(UNIT(m), UNIT_AFTER, UNIT(n), true)) < 0)
142 if (n->from_etc_fstab || n->from_fragment)
143 if ((r = unit_add_dependency(UNIT(m), UNIT_REQUIRES, UNIT(n), true)) < 0)
146 } else if (path_startswith(n->where, m->where)) {
148 if ((r = unit_add_dependency(UNIT(m), UNIT_BEFORE, UNIT(n), true)) < 0)
151 if (m->from_etc_fstab || m->from_fragment)
152 if ((r = unit_add_dependency(UNIT(n), UNIT_REQUIRES, UNIT(m), true)) < 0)
160 static int mount_add_swap_links(Mount *m) {
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)
173 static int mount_add_path_links(Mount *m) {
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)
186 static int mount_add_automount_links(Mount *m) {
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)
199 static int mount_add_socket_links(Mount *m) {
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)
212 static char* mount_test_option(const char *haystack, const char *needle) {
217 /* Like glibc's hasmntopt(), but works on a string, not a
224 me.mnt_opts = (char*) haystack;
226 return hasmntopt(&me, needle);
229 static int mount_add_target_links(Mount *m) {
234 bool noauto, handle, automount, user;
238 if (m->from_fragment)
239 p = &m->parameters_fragment;
240 else if (m->from_etc_fstab)
241 p = &m->parameters_etc_fstab;
245 noauto = !!mount_test_option(p->options, MNTOPT_NOAUTO);
246 user = mount_test_option(p->options, "user") || mount_test_option(p->options, "users");
247 handle = !!mount_test_option(p->options, "comment=systemd.mount") ||
248 m->meta.manager->mount_auto;
249 automount = !!mount_test_option(p->options, "comment=systemd.automount");
251 if (mount_test_option(p->options, "_netdev") ||
252 fstype_is_network(p->fstype))
253 target = SPECIAL_REMOTE_FS_TARGET;
255 target = SPECIAL_LOCAL_FS_TARGET;
257 if ((r = manager_load_unit(m->meta.manager, target, NULL, NULL, &tu)) < 0)
260 if (automount && m->meta.manager->running_as == MANAGER_SYSTEM) {
263 if ((r = unit_load_related_unit(UNIT(m), ".automount", &am)) < 0)
266 return unit_add_two_dependencies(tu, UNIT_AFTER, UNIT_WANTS, UNIT(am), true);
269 if (!noauto && handle)
270 if (user || m->meta.manager->running_as == MANAGER_SYSTEM)
271 if ((r = unit_add_dependency(tu, UNIT_WANTS, UNIT(m), true)) < 0)
274 return unit_add_dependency(UNIT(m), UNIT_BEFORE, tu, true);
278 static int mount_add_device_links(Mount *m) {
284 if (m->from_fragment)
285 p = &m->parameters_fragment;
286 else if (m->from_etc_fstab)
287 p = &m->parameters_etc_fstab;
291 if (!p->what || path_equal(m->where, "/"))
294 noauto = !!mount_test_option(p->options, MNTOPT_NOAUTO);
295 nofail = !!mount_test_option(p->options, "nofail");
297 return unit_add_node_link(UNIT(m), p->what,
299 UNIT(m)->meta.manager->running_as == MANAGER_SYSTEM);
302 static int mount_add_default_dependencies(Mount *m) {
307 if (m->meta.manager->running_as == MANAGER_SYSTEM &&
308 !path_equal(m->where, "/")) {
310 if ((r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, SPECIAL_FSCK_TARGET, NULL, true)) < 0)
313 if ((r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_CONFLICTED_BY, SPECIAL_UMOUNT_TARGET, NULL, true)) < 0)
320 static int mount_verify(Mount *m) {
325 if (m->meta.load_state != UNIT_LOADED)
328 if (!m->from_etc_fstab && !m->from_fragment && !m->from_proc_self_mountinfo)
331 if (!(e = unit_name_from_path(m->where, ".mount")))
334 b = unit_has_name(UNIT(m), e);
338 log_error("%s's Where setting doesn't match unit name. Refusing.", m->meta.id);
342 if (m->meta.fragment_path && !m->parameters_fragment.what) {
343 log_error("%s's What setting is missing. Refusing.", m->meta.id);
347 if (m->exec_context.pam_name && m->exec_context.kill_mode != KILL_CONTROL_GROUP) {
348 log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", m->meta.id);
355 static int mount_load(Unit *u) {
360 assert(u->meta.load_state == UNIT_STUB);
362 if ((r = unit_load_fragment_and_dropin_optional(u)) < 0)
365 /* This is a new unit? Then let's add in some extras */
366 if (u->meta.load_state == UNIT_LOADED) {
367 const char *what = NULL;
369 if (m->meta.fragment_path)
370 m->from_fragment = true;
373 if (!(m->where = unit_name_to_path(u->meta.id)))
376 path_kill_slashes(m->where);
378 if (!m->meta.description)
379 if ((r = unit_set_description(u, m->where)) < 0)
382 if (m->from_fragment && m->parameters_fragment.what)
383 what = m->parameters_fragment.what;
384 else if (m->from_etc_fstab && m->parameters_etc_fstab.what)
385 what = m->parameters_etc_fstab.what;
386 else if (m->from_proc_self_mountinfo && m->parameters_proc_self_mountinfo.what)
387 what = m->parameters_proc_self_mountinfo.what;
389 if ((r = mount_add_device_links(m)) < 0)
392 if ((r = mount_add_mount_links(m)) < 0)
395 if ((r = mount_add_socket_links(m)) < 0)
398 if ((r = mount_add_swap_links(m)) < 0)
401 if ((r = mount_add_path_links(m)) < 0)
404 if ((r = mount_add_automount_links(m)) < 0)
407 if ((r = mount_add_target_links(m)) < 0)
410 if ((r = unit_add_default_cgroup(u)) < 0)
413 if (m->meta.default_dependencies)
414 if ((r = mount_add_default_dependencies(m)) < 0)
418 return mount_verify(m);
421 static int mount_notify_automount(Mount *m, int status) {
427 if ((r = unit_get_related_unit(UNIT(m), ".automount", &p)) < 0)
428 return r == -ENOENT ? 0 : r;
430 return automount_send_ready(AUTOMOUNT(p), status);
433 static void mount_set_state(Mount *m, MountState state) {
434 MountState old_state;
437 old_state = m->state;
440 if (state != MOUNT_MOUNTING &&
441 state != MOUNT_MOUNTING_DONE &&
442 state != MOUNT_REMOUNTING &&
443 state != MOUNT_UNMOUNTING &&
444 state != MOUNT_MOUNTING_SIGTERM &&
445 state != MOUNT_MOUNTING_SIGKILL &&
446 state != MOUNT_UNMOUNTING_SIGTERM &&
447 state != MOUNT_UNMOUNTING_SIGKILL &&
448 state != MOUNT_REMOUNTING_SIGTERM &&
449 state != MOUNT_REMOUNTING_SIGKILL) {
450 unit_unwatch_timer(UNIT(m), &m->timer_watch);
451 mount_unwatch_control_pid(m);
452 m->control_command = NULL;
453 m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
456 if (state == MOUNT_MOUNTED ||
457 state == MOUNT_REMOUNTING)
458 mount_notify_automount(m, 0);
459 else if (state == MOUNT_DEAD ||
460 state == MOUNT_UNMOUNTING ||
461 state == MOUNT_MOUNTING_SIGTERM ||
462 state == MOUNT_MOUNTING_SIGKILL ||
463 state == MOUNT_REMOUNTING_SIGTERM ||
464 state == MOUNT_REMOUNTING_SIGKILL ||
465 state == MOUNT_UNMOUNTING_SIGTERM ||
466 state == MOUNT_UNMOUNTING_SIGKILL ||
467 state == MOUNT_MAINTENANCE)
468 mount_notify_automount(m, -ENODEV);
470 if (state != old_state)
471 log_debug("%s changed %s -> %s",
473 mount_state_to_string(old_state),
474 mount_state_to_string(state));
476 unit_notify(UNIT(m), state_translation_table[old_state], state_translation_table[state]);
479 static int mount_coldplug(Unit *u) {
481 MountState new_state = MOUNT_DEAD;
485 assert(m->state == MOUNT_DEAD);
487 if (m->deserialized_state != m->state)
488 new_state = m->deserialized_state;
489 else if (m->from_proc_self_mountinfo)
490 new_state = MOUNT_MOUNTED;
492 if (new_state != m->state) {
494 if (new_state == MOUNT_MOUNTING ||
495 new_state == MOUNT_MOUNTING_DONE ||
496 new_state == MOUNT_REMOUNTING ||
497 new_state == MOUNT_UNMOUNTING ||
498 new_state == MOUNT_MOUNTING_SIGTERM ||
499 new_state == MOUNT_MOUNTING_SIGKILL ||
500 new_state == MOUNT_UNMOUNTING_SIGTERM ||
501 new_state == MOUNT_UNMOUNTING_SIGKILL ||
502 new_state == MOUNT_REMOUNTING_SIGTERM ||
503 new_state == MOUNT_REMOUNTING_SIGKILL) {
505 if (m->control_pid <= 0)
508 if ((r = unit_watch_pid(UNIT(m), m->control_pid)) < 0)
511 if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
515 mount_set_state(m, new_state);
521 static void mount_dump(Unit *u, FILE *f, const char *prefix) {
528 if (m->from_proc_self_mountinfo)
529 p = &m->parameters_proc_self_mountinfo;
530 else if (m->from_fragment)
531 p = &m->parameters_fragment;
533 p = &m->parameters_etc_fstab;
536 "%sMount State: %s\n"
539 "%sFile System Type: %s\n"
541 "%sFrom /etc/fstab: %s\n"
542 "%sFrom /proc/self/mountinfo: %s\n"
543 "%sFrom fragment: %s\n"
544 "%sDirectoryMode: %04o\n",
545 prefix, mount_state_to_string(m->state),
547 prefix, strna(p->what),
548 prefix, strna(p->fstype),
549 prefix, strna(p->options),
550 prefix, yes_no(m->from_etc_fstab),
551 prefix, yes_no(m->from_proc_self_mountinfo),
552 prefix, yes_no(m->from_fragment),
553 prefix, m->directory_mode);
555 if (m->control_pid > 0)
557 "%sControl PID: %lu\n",
558 prefix, (unsigned long) m->control_pid);
560 exec_context_dump(&m->exec_context, f, prefix);
563 static int mount_spawn(Mount *m, ExecCommand *c, pid_t *_pid) {
571 if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
574 if ((r = exec_spawn(c,
578 m->meta.manager->environment,
582 m->meta.manager->confirm_spawn,
583 m->meta.cgroup_bondings,
587 if ((r = unit_watch_pid(UNIT(m), pid)) < 0)
588 /* FIXME: we need to do something here */
596 unit_unwatch_timer(UNIT(m), &m->timer_watch);
601 static void mount_enter_dead(Mount *m, bool success) {
607 mount_set_state(m, m->failure ? MOUNT_MAINTENANCE : MOUNT_DEAD);
610 static void mount_enter_mounted(Mount *m, bool success) {
616 mount_set_state(m, MOUNT_MOUNTED);
619 static void mount_enter_signal(Mount *m, MountState state, bool success) {
628 if (m->exec_context.kill_mode != KILL_NONE) {
629 int sig = (state == MOUNT_MOUNTING_SIGTERM ||
630 state == MOUNT_UNMOUNTING_SIGTERM ||
631 state == MOUNT_REMOUNTING_SIGTERM) ? m->exec_context.kill_signal : SIGKILL;
633 if (m->exec_context.kill_mode == KILL_CONTROL_GROUP) {
635 if ((r = cgroup_bonding_kill_list(m->meta.cgroup_bondings, sig)) < 0) {
636 if (r != -EAGAIN && r != -ESRCH)
642 if (!sent && m->control_pid > 0)
643 if (kill(m->exec_context.kill_mode == KILL_PROCESS ?
645 -m->control_pid, sig) < 0 && errno != ESRCH) {
653 if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
656 mount_set_state(m, state);
657 } else if (state == MOUNT_REMOUNTING_SIGTERM || state == MOUNT_REMOUNTING_SIGKILL)
658 mount_enter_mounted(m, true);
660 mount_enter_dead(m, true);
665 log_warning("%s failed to kill processes: %s", m->meta.id, strerror(-r));
667 if (state == MOUNT_REMOUNTING_SIGTERM || state == MOUNT_REMOUNTING_SIGKILL)
668 mount_enter_mounted(m, false);
670 mount_enter_dead(m, false);
673 static void mount_enter_unmounting(Mount *m, bool success) {
681 m->control_command_id = MOUNT_EXEC_UNMOUNT;
682 m->control_command = m->exec_command + MOUNT_EXEC_UNMOUNT;
684 if ((r = exec_command_set(
691 mount_unwatch_control_pid(m);
693 if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
696 mount_set_state(m, MOUNT_UNMOUNTING);
701 log_warning("%s failed to run 'umount' task: %s", m->meta.id, strerror(-r));
702 mount_enter_mounted(m, false);
705 static void mount_enter_mounting(Mount *m) {
710 m->control_command_id = MOUNT_EXEC_MOUNT;
711 m->control_command = m->exec_command + MOUNT_EXEC_MOUNT;
713 mkdir_p(m->where, m->directory_mode);
715 if (m->from_fragment)
716 r = exec_command_set(
719 m->parameters_fragment.what,
721 "-t", m->parameters_fragment.fstype,
722 m->parameters_fragment.options ? "-o" : NULL, m->parameters_fragment.options,
724 else if (m->from_etc_fstab)
725 r = exec_command_set(
736 mount_unwatch_control_pid(m);
738 if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
741 mount_set_state(m, MOUNT_MOUNTING);
746 log_warning("%s failed to run 'mount' task: %s", m->meta.id, strerror(-r));
747 mount_enter_dead(m, false);
750 static void mount_enter_mounting_done(Mount *m) {
753 mount_set_state(m, MOUNT_MOUNTING_DONE);
756 static void mount_enter_remounting(Mount *m, bool success) {
764 m->control_command_id = MOUNT_EXEC_REMOUNT;
765 m->control_command = m->exec_command + MOUNT_EXEC_REMOUNT;
767 if (m->from_fragment) {
771 if (m->parameters_fragment.options) {
772 if (!(buf = strappend("remount,", m->parameters_fragment.options))) {
781 r = exec_command_set(
784 m->parameters_fragment.what,
786 "-t", m->parameters_fragment.fstype,
791 } else if (m->from_etc_fstab)
792 r = exec_command_set(
806 mount_unwatch_control_pid(m);
808 if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
811 mount_set_state(m, MOUNT_REMOUNTING);
816 log_warning("%s failed to run 'remount' task: %s", m->meta.id, strerror(-r));
817 mount_enter_mounted(m, false);
820 static int mount_start(Unit *u) {
825 /* We cannot fulfill this request right now, try again later
827 if (m->state == MOUNT_UNMOUNTING ||
828 m->state == MOUNT_UNMOUNTING_SIGTERM ||
829 m->state == MOUNT_UNMOUNTING_SIGKILL)
833 if (m->state == MOUNT_MOUNTING ||
834 m->state == MOUNT_MOUNTING_SIGTERM ||
835 m->state == MOUNT_MOUNTING_SIGKILL)
838 assert(m->state == MOUNT_DEAD || m->state == MOUNT_MAINTENANCE);
841 mount_enter_mounting(m);
845 static int mount_stop(Unit *u) {
851 if (m->state == MOUNT_UNMOUNTING ||
852 m->state == MOUNT_UNMOUNTING_SIGKILL ||
853 m->state == MOUNT_UNMOUNTING_SIGTERM)
856 assert(m->state == MOUNT_MOUNTING ||
857 m->state == MOUNT_MOUNTING_DONE ||
858 m->state == MOUNT_MOUNTED ||
859 m->state == MOUNT_MOUNTING_SIGTERM ||
860 m->state == MOUNT_MOUNTING_SIGKILL ||
861 m->state == MOUNT_REMOUNTING ||
862 m->state == MOUNT_REMOUNTING_SIGTERM ||
863 m->state == MOUNT_REMOUNTING_SIGKILL);
865 mount_enter_unmounting(m, true);
869 static int mount_reload(Unit *u) {
874 if (m->state == MOUNT_MOUNTING_DONE)
877 assert(m->state == MOUNT_MOUNTED);
879 mount_enter_remounting(m, true);
883 static int mount_serialize(Unit *u, FILE *f, FDSet *fds) {
890 unit_serialize_item(u, f, "state", mount_state_to_string(m->state));
891 unit_serialize_item(u, f, "failure", yes_no(m->failure));
893 if (m->control_pid > 0)
894 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) m->control_pid);
896 if (m->control_command_id >= 0)
897 unit_serialize_item(u, f, "control-command", mount_exec_command_to_string(m->control_command_id));
902 static int mount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
910 if (streq(key, "state")) {
913 if ((state = mount_state_from_string(value)) < 0)
914 log_debug("Failed to parse state value %s", value);
916 m->deserialized_state = state;
917 } else if (streq(key, "failure")) {
920 if ((b = parse_boolean(value)) < 0)
921 log_debug("Failed to parse failure value %s", value);
923 m->failure = b || m->failure;
925 } else if (streq(key, "control-pid")) {
928 if (parse_pid(value, &pid) < 0)
929 log_debug("Failed to parse control-pid value %s", value);
931 m->control_pid = pid;
932 } else if (streq(key, "control-command")) {
935 if ((id = mount_exec_command_from_string(value)) < 0)
936 log_debug("Failed to parse exec-command value %s", value);
938 m->control_command_id = id;
939 m->control_command = m->exec_command + id;
943 log_debug("Unknown serialization key '%s'", key);
948 static UnitActiveState mount_active_state(Unit *u) {
951 return state_translation_table[MOUNT(u)->state];
954 static const char *mount_sub_state_to_string(Unit *u) {
957 return mount_state_to_string(MOUNT(u)->state);
960 static bool mount_check_gc(Unit *u) {
965 return m->from_etc_fstab || m->from_proc_self_mountinfo;
968 static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) {
975 if (pid != m->control_pid)
980 success = is_clean_exit(code, status);
981 m->failure = m->failure || !success;
983 if (m->control_command) {
984 exec_status_exit(&m->control_command->exec_status, pid, code, status);
985 m->control_command = NULL;
986 m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
989 log_full(success ? LOG_DEBUG : LOG_NOTICE,
990 "%s mount process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
992 /* Note that mount(8) returning and the kernel sending us a
993 * mount table change event might happen out-of-order. If an
994 * operation succeed we assume the kernel will follow soon too
995 * and already change into the resulting state. If it fails
996 * we check if the kernel still knows about the mount. and
997 * change state accordingly. */
1001 case MOUNT_MOUNTING:
1002 case MOUNT_MOUNTING_DONE:
1003 case MOUNT_MOUNTING_SIGKILL:
1004 case MOUNT_MOUNTING_SIGTERM:
1005 case MOUNT_REMOUNTING:
1006 case MOUNT_REMOUNTING_SIGKILL:
1007 case MOUNT_REMOUNTING_SIGTERM:
1010 mount_enter_mounted(m, true);
1011 else if (m->from_proc_self_mountinfo)
1012 mount_enter_mounted(m, false);
1014 mount_enter_dead(m, false);
1017 case MOUNT_UNMOUNTING:
1018 case MOUNT_UNMOUNTING_SIGKILL:
1019 case MOUNT_UNMOUNTING_SIGTERM:
1022 mount_enter_dead(m, true);
1023 else if (m->from_proc_self_mountinfo)
1024 mount_enter_mounted(m, false);
1026 mount_enter_dead(m, false);
1030 assert_not_reached("Uh, control process died at wrong time.");
1033 /* Notify clients about changed exit status */
1034 unit_add_to_dbus_queue(u);
1037 static void mount_timer_event(Unit *u, uint64_t elapsed, Watch *w) {
1038 Mount *m = MOUNT(u);
1041 assert(elapsed == 1);
1042 assert(w == &m->timer_watch);
1046 case MOUNT_MOUNTING:
1047 case MOUNT_MOUNTING_DONE:
1048 log_warning("%s mounting timed out. Stopping.", u->meta.id);
1049 mount_enter_signal(m, MOUNT_MOUNTING_SIGTERM, false);
1052 case MOUNT_REMOUNTING:
1053 log_warning("%s remounting timed out. Stopping.", u->meta.id);
1054 mount_enter_signal(m, MOUNT_REMOUNTING_SIGTERM, false);
1057 case MOUNT_UNMOUNTING:
1058 log_warning("%s unmounting timed out. Stopping.", u->meta.id);
1059 mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, false);
1062 case MOUNT_MOUNTING_SIGTERM:
1063 log_warning("%s mounting timed out. Killing.", u->meta.id);
1064 mount_enter_signal(m, MOUNT_MOUNTING_SIGKILL, false);
1067 case MOUNT_REMOUNTING_SIGTERM:
1068 log_warning("%s remounting timed out. Killing.", u->meta.id);
1069 mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, false);
1072 case MOUNT_UNMOUNTING_SIGTERM:
1073 log_warning("%s unmounting timed out. Killing.", u->meta.id);
1074 mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, false);
1077 case MOUNT_MOUNTING_SIGKILL:
1078 case MOUNT_REMOUNTING_SIGKILL:
1079 case MOUNT_UNMOUNTING_SIGKILL:
1080 log_warning("%s mount process still around after SIGKILL. Ignoring.", u->meta.id);
1082 if (m->from_proc_self_mountinfo)
1083 mount_enter_mounted(m, false);
1085 mount_enter_dead(m, false);
1089 assert_not_reached("Timeout at wrong time.");
1093 static int mount_add_one(
1097 const char *options,
1099 bool from_proc_self_mountinfo,
1104 char *e, *w = NULL, *o = NULL, *f = NULL;
1113 assert(!set_flags || from_proc_self_mountinfo);
1115 /* Ignore API mount points. They should never be referenced in
1116 * dependencies ever. */
1117 if (mount_point_is_api(where))
1120 if (streq(fstype, "autofs"))
1123 /* probably some kind of swap, ignore */
1124 if (!is_path(where))
1127 if (!(e = unit_name_from_path(where, ".mount")))
1130 if (!(u = manager_get_unit(m, e))) {
1133 if (!(u = unit_new(m))) {
1138 r = unit_add_name(u, e);
1144 if (!(MOUNT(u)->where = strdup(where))) {
1149 unit_add_to_load_queue(u);
1155 if (!(w = strdup(what)) ||
1156 !(o = strdup(options)) ||
1157 !(f = strdup(fstype))) {
1162 if (from_proc_self_mountinfo) {
1163 p = &MOUNT(u)->parameters_proc_self_mountinfo;
1166 MOUNT(u)->is_mounted = true;
1167 MOUNT(u)->just_mounted = !MOUNT(u)->from_proc_self_mountinfo;
1168 MOUNT(u)->just_changed = !streq_ptr(p->options, o);
1171 MOUNT(u)->from_proc_self_mountinfo = true;
1173 p = &MOUNT(u)->parameters_etc_fstab;
1174 MOUNT(u)->from_etc_fstab = true;
1186 unit_add_to_dbus_queue(u);
1201 static char *fstab_node_to_udev_node(char *p) {
1205 /* FIXME: to follow udev's logic 100% we need to leave valid
1206 * UTF8 chars unescaped */
1208 if (startswith(p, "LABEL=")) {
1210 if (!(u = unquote(p+6, '"')))
1213 t = xescape(u, "/ ");
1219 r = asprintf(&dn, "/dev/disk/by-label/%s", t);
1228 if (startswith(p, "UUID=")) {
1230 if (!(u = unquote(p+5, '"')))
1233 t = xescape(u, "/ ");
1239 r = asprintf(&dn, "/dev/disk/by-uuid/%s", ascii_strlower(t));
1251 static int mount_find_pri(char *options) {
1255 if (!(pri = mount_test_option(options, "pri=")))
1261 r = strtoul(pri, &end, 10);
1266 if (end == pri || (*end != ',' && *end != 0))
1272 static int mount_load_etc_fstab(Manager *m) {
1280 if (!(f = setmntent("/etc/fstab", "r")))
1283 while ((me = getmntent(f))) {
1286 if (!(what = fstab_node_to_udev_node(me->mnt_fsname))) {
1291 if (!(where = strdup(me->mnt_dir))) {
1298 path_kill_slashes(what);
1300 if (where[0] == '/')
1301 path_kill_slashes(where);
1303 if (streq(me->mnt_type, "swap")) {
1306 if ((pri = mount_find_pri(me->mnt_opts)) < 0)
1312 !!mount_test_option(me->mnt_opts, MNTOPT_NOAUTO),
1313 !!mount_test_option(me->mnt_opts, "nofail"),
1314 !!mount_test_option(me->mnt_opts, "comment=systemd.swapon"),
1317 r = mount_add_one(m, what, where, me->mnt_opts, me->mnt_type, false, false);
1333 static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) {
1335 char *device, *path, *options, *options2, *fstype, *d, *p, *o;
1339 rewind(m->proc_self_mountinfo);
1344 device = path = options = options2 = fstype = d = p = o = NULL;
1346 if ((k = fscanf(m->proc_self_mountinfo,
1347 "%*s " /* (1) mount id */
1348 "%*s " /* (2) parent id */
1349 "%*s " /* (3) major:minor */
1350 "%*s " /* (4) root */
1351 "%ms " /* (5) mount point */
1352 "%ms" /* (6) mount options */
1353 "%*[^-]" /* (7) optional fields */
1354 "- " /* (8) seperator */
1355 "%ms " /* (9) file system type */
1356 "%ms" /* (10) mount source */
1357 "%ms" /* (11) mount options 2 */
1358 "%*[^\n]", /* some rubbish at the end */
1372 if (asprintf(&o, "%s,%s", options, options2) < 0) {
1377 if (!(d = cunescape(device)) ||
1378 !(p = cunescape(path))) {
1383 if ((r = mount_add_one(m, d, p, o, fstype, true, set_flags)) < 0)
1411 static void mount_shutdown(Manager *m) {
1414 if (m->proc_self_mountinfo) {
1415 fclose(m->proc_self_mountinfo);
1416 m->proc_self_mountinfo = NULL;
1420 static int mount_enumerate(Manager *m) {
1422 struct epoll_event ev;
1425 if (!m->proc_self_mountinfo) {
1426 if (!(m->proc_self_mountinfo = fopen("/proc/self/mountinfo", "re")))
1429 m->mount_watch.type = WATCH_MOUNT;
1430 m->mount_watch.fd = fileno(m->proc_self_mountinfo);
1433 ev.events = EPOLLERR;
1434 ev.data.ptr = &m->mount_watch;
1436 if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->mount_watch.fd, &ev) < 0)
1440 if ((r = mount_load_etc_fstab(m)) < 0)
1443 if ((r = mount_load_proc_self_mountinfo(m, false)) < 0)
1453 void mount_fd_event(Manager *m, int events) {
1458 assert(events == EPOLLERR);
1460 /* The manager calls this for every fd event happening on the
1461 * /proc/self/mountinfo file, which informs us about mounting
1464 if ((r = mount_load_proc_self_mountinfo(m, true)) < 0) {
1465 log_error("Failed to reread /proc/self/mountinfo: %s", strerror(-r));
1467 /* Reset flags, just in case, for later calls */
1468 LIST_FOREACH(units_per_type, meta, m->units_per_type[UNIT_MOUNT]) {
1469 Mount *mount = (Mount*) meta;
1471 mount->is_mounted = mount->just_mounted = mount->just_changed = false;
1477 manager_dispatch_load_queue(m);
1479 LIST_FOREACH(units_per_type, meta, m->units_per_type[UNIT_MOUNT]) {
1480 Mount *mount = (Mount*) meta;
1482 if (!mount->is_mounted) {
1483 /* This has just been unmounted. */
1485 mount->from_proc_self_mountinfo = false;
1487 switch (mount->state) {
1490 mount_enter_dead(mount, true);
1494 mount_set_state(mount, mount->state);
1499 } else if (mount->just_mounted || mount->just_changed) {
1501 /* New or changed entrymount */
1503 switch (mount->state) {
1506 case MOUNT_MAINTENANCE:
1507 mount_enter_mounted(mount, true);
1510 case MOUNT_MOUNTING:
1511 mount_enter_mounting_done(mount);
1515 /* Nothing really changed, but let's
1516 * issue an notification call
1517 * nonetheless, in case somebody is
1518 * waiting for this. (e.g. file system
1519 * ro/rw remounts.) */
1520 mount_set_state(mount, mount->state);
1525 /* Reset the flags for later calls */
1526 mount->is_mounted = mount->just_mounted = mount->just_changed = false;
1530 static void mount_reset_maintenance(Unit *u) {
1531 Mount *m = MOUNT(u);
1535 if (m->state == MOUNT_MAINTENANCE)
1536 mount_set_state(m, MOUNT_DEAD);
1541 static const char* const mount_state_table[_MOUNT_STATE_MAX] = {
1542 [MOUNT_DEAD] = "dead",
1543 [MOUNT_MOUNTING] = "mounting",
1544 [MOUNT_MOUNTING_DONE] = "mounting-done",
1545 [MOUNT_MOUNTED] = "mounted",
1546 [MOUNT_REMOUNTING] = "remounting",
1547 [MOUNT_UNMOUNTING] = "unmounting",
1548 [MOUNT_MOUNTING_SIGTERM] = "mounting-sigterm",
1549 [MOUNT_MOUNTING_SIGKILL] = "mounting-sigkill",
1550 [MOUNT_REMOUNTING_SIGTERM] = "remounting-sigterm",
1551 [MOUNT_REMOUNTING_SIGKILL] = "remounting-sigkill",
1552 [MOUNT_UNMOUNTING_SIGTERM] = "unmounting-sigterm",
1553 [MOUNT_UNMOUNTING_SIGKILL] = "unmounting-sigkill",
1554 [MOUNT_MAINTENANCE] = "maintenance"
1557 DEFINE_STRING_TABLE_LOOKUP(mount_state, MountState);
1559 static const char* const mount_exec_command_table[_MOUNT_EXEC_COMMAND_MAX] = {
1560 [MOUNT_EXEC_MOUNT] = "ExecMount",
1561 [MOUNT_EXEC_UNMOUNT] = "ExecUnmount",
1562 [MOUNT_EXEC_REMOUNT] = "ExecRemount",
1565 DEFINE_STRING_TABLE_LOOKUP(mount_exec_command, MountExecCommand);
1567 const UnitVTable mount_vtable = {
1571 .no_instances = true,
1573 .show_status = true,
1579 .coldplug = mount_coldplug,
1583 .start = mount_start,
1585 .reload = mount_reload,
1587 .serialize = mount_serialize,
1588 .deserialize_item = mount_deserialize_item,
1590 .active_state = mount_active_state,
1591 .sub_state_to_string = mount_sub_state_to_string,
1593 .check_gc = mount_check_gc,
1595 .sigchld_event = mount_sigchld_event,
1596 .timer_event = mount_timer_event,
1598 .reset_maintenance = mount_reset_maintenance,
1600 .bus_interface = "org.freedesktop.systemd1.Mount",
1601 .bus_message_handler = bus_mount_message_handler,
1602 .bus_invalidating_properties = bus_mount_invalidating_properties,
1604 .enumerate = mount_enumerate,
1605 .shutdown = mount_shutdown