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"
39 static const UnitActiveState state_translation_table[_MOUNT_STATE_MAX] = {
40 [MOUNT_DEAD] = UNIT_INACTIVE,
41 [MOUNT_MOUNTING] = UNIT_ACTIVATING,
42 [MOUNT_MOUNTING_DONE] = UNIT_ACTIVE,
43 [MOUNT_MOUNTED] = UNIT_ACTIVE,
44 [MOUNT_REMOUNTING] = UNIT_ACTIVE_RELOADING,
45 [MOUNT_UNMOUNTING] = UNIT_DEACTIVATING,
46 [MOUNT_MOUNTING_SIGTERM] = UNIT_DEACTIVATING,
47 [MOUNT_MOUNTING_SIGKILL] = UNIT_DEACTIVATING,
48 [MOUNT_REMOUNTING_SIGTERM] = UNIT_ACTIVE_RELOADING,
49 [MOUNT_REMOUNTING_SIGKILL] = UNIT_ACTIVE_RELOADING,
50 [MOUNT_UNMOUNTING_SIGTERM] = UNIT_DEACTIVATING,
51 [MOUNT_UNMOUNTING_SIGKILL] = UNIT_DEACTIVATING,
52 [MOUNT_MAINTENANCE] = UNIT_INACTIVE,
55 static void mount_init(Unit *u) {
59 assert(u->meta.load_state == UNIT_STUB);
61 m->timeout_usec = DEFAULT_TIMEOUT_USEC;
62 exec_context_init(&m->exec_context);
64 /* We need to make sure that /bin/mount is always called in
65 * the same process group as us, so that the autofs kernel
66 * side doesn't send us another mount request while we are
67 * already trying to comply its last one. */
68 m->exec_context.no_setsid = true;
70 m->timer_watch.type = WATCH_INVALID;
72 m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
75 static void mount_unwatch_control_pid(Mount *m) {
78 if (m->control_pid <= 0)
81 unit_unwatch_pid(UNIT(m), m->control_pid);
85 static void mount_parameters_done(MountParameters *p) {
92 p->what = p->options = p->fstype = NULL;
95 static void mount_done(Unit *u) {
103 mount_parameters_done(&m->parameters_etc_fstab);
104 mount_parameters_done(&m->parameters_proc_self_mountinfo);
105 mount_parameters_done(&m->parameters_fragment);
107 exec_context_done(&m->exec_context);
108 exec_command_done_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX);
109 m->control_command = NULL;
111 mount_unwatch_control_pid(m);
113 unit_unwatch_timer(u, &m->timer_watch);
116 static int mount_add_mount_links(Mount *m) {
122 /* Adds in links to other mount points that might lie below or
123 * above us in the hierarchy */
125 LIST_FOREACH(units_per_type, other, m->meta.manager->units_per_type[UNIT_MOUNT]) {
126 Mount *n = (Mount*) other;
131 if (n->meta.load_state != UNIT_LOADED)
134 if (path_startswith(m->where, n->where)) {
136 if ((r = unit_add_dependency(UNIT(m), UNIT_AFTER, UNIT(n), true)) < 0)
139 if (n->from_etc_fstab || n->from_fragment)
140 if ((r = unit_add_dependency(UNIT(m), UNIT_REQUIRES, UNIT(n), true)) < 0)
143 } else if (path_startswith(n->where, m->where)) {
145 if ((r = unit_add_dependency(UNIT(m), UNIT_BEFORE, UNIT(n), true)) < 0)
148 if (m->from_etc_fstab || m->from_fragment)
149 if ((r = unit_add_dependency(UNIT(n), UNIT_REQUIRES, UNIT(m), true)) < 0)
157 static int mount_add_swap_links(Mount *m) {
163 LIST_FOREACH(units_per_type, other, m->meta.manager->units_per_type[UNIT_SWAP])
164 if ((r = swap_add_one_mount_link((Swap*) other, m)) < 0)
170 static int mount_add_path_links(Mount *m) {
176 LIST_FOREACH(units_per_type, other, m->meta.manager->units_per_type[UNIT_PATH])
177 if ((r = path_add_one_mount_link((Path*) other, m)) < 0)
183 static int mount_add_automount_links(Mount *m) {
189 LIST_FOREACH(units_per_type, other, m->meta.manager->units_per_type[UNIT_AUTOMOUNT])
190 if ((r = automount_add_one_mount_link((Automount*) other, m)) < 0)
196 static int mount_add_socket_links(Mount *m) {
202 LIST_FOREACH(units_per_type, other, m->meta.manager->units_per_type[UNIT_SOCKET])
203 if ((r = socket_add_one_mount_link((Socket*) other, m)) < 0)
209 static char* mount_test_option(const char *haystack, const char *needle) {
214 /* Like glibc's hasmntopt(), but works on a string, not a
221 me.mnt_opts = (char*) haystack;
223 return hasmntopt(&me, needle);
226 static int mount_add_target_links(Mount *m) {
231 bool noauto, handle, automount, user;
235 if (m->from_fragment)
236 p = &m->parameters_fragment;
237 else if (m->from_etc_fstab)
238 p = &m->parameters_etc_fstab;
242 noauto = !!mount_test_option(p->options, MNTOPT_NOAUTO);
243 user = mount_test_option(p->options, "user") || mount_test_option(p->options, "users");
244 handle = !!mount_test_option(p->options, "comment=systemd.mount");
245 automount = !!mount_test_option(p->options, "comment=systemd.automount");
247 if (mount_test_option(p->options, "_netdev") ||
248 fstype_is_network(p->fstype))
249 target = SPECIAL_REMOTE_FS_TARGET;
251 target = SPECIAL_LOCAL_FS_TARGET;
253 if ((r = manager_load_unit(UNIT(m)->meta.manager, target, NULL, &tu)) < 0)
256 if (automount && m->meta.manager->running_as != MANAGER_SESSION) {
259 if ((r = unit_load_related_unit(UNIT(m), ".automount", &am)) < 0)
262 if ((r = unit_add_dependency(tu, UNIT_WANTS, UNIT(am), true)) < 0)
265 return unit_add_dependency(UNIT(am), UNIT_BEFORE, tu, true);
269 if (!noauto && handle)
270 if (user || m->meta.manager->running_as != MANAGER_SESSION)
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_verify(Mount *m) {
283 if (m->meta.load_state != UNIT_LOADED)
286 if (!m->from_etc_fstab && !m->from_fragment && !m->from_proc_self_mountinfo)
289 if (!(e = unit_name_from_path(m->where, ".mount")))
292 b = unit_has_name(UNIT(m), e);
296 log_error("%s's Where setting doesn't match unit name. Refusing.", UNIT(m)->meta.id);
300 if (m->meta.fragment_path && !m->parameters_fragment.what) {
301 log_error("%s's What setting is missing. Refusing.", UNIT(m)->meta.id);
308 static int mount_load(Unit *u) {
313 assert(u->meta.load_state == UNIT_STUB);
315 if ((r = unit_load_fragment_and_dropin_optional(u)) < 0)
318 /* This is a new unit? Then let's add in some extras */
319 if (u->meta.load_state == UNIT_LOADED) {
320 const char *what = NULL;
322 if (m->meta.fragment_path)
323 m->from_fragment = true;
326 if (!(m->where = unit_name_to_path(u->meta.id)))
329 path_kill_slashes(m->where);
331 if (!m->meta.description)
332 if ((r = unit_set_description(u, m->where)) < 0)
335 if (m->from_fragment && m->parameters_fragment.what)
336 what = m->parameters_fragment.what;
337 else if (m->from_etc_fstab && m->parameters_etc_fstab.what)
338 what = m->parameters_etc_fstab.what;
339 else if (m->from_proc_self_mountinfo && m->parameters_proc_self_mountinfo.what)
340 what = m->parameters_proc_self_mountinfo.what;
343 if ((r = unit_add_node_link(u, what,
344 (u->meta.manager->running_as == MANAGER_INIT ||
345 u->meta.manager->running_as == MANAGER_SYSTEM))) < 0)
348 if ((r = mount_add_mount_links(m)) < 0)
351 if ((r = mount_add_socket_links(m)) < 0)
354 if ((r = mount_add_swap_links(m)) < 0)
357 if ((r = mount_add_path_links(m)) < 0)
360 if ((r = mount_add_automount_links(m)) < 0)
363 if ((r = mount_add_target_links(m)) < 0)
366 if ((r = unit_add_default_cgroup(u)) < 0)
370 return mount_verify(m);
373 static int mount_notify_automount(Mount *m, int status) {
379 if ((r = unit_get_related_unit(UNIT(m), ".automount", &p)) < 0)
380 return r == -ENOENT ? 0 : r;
382 return automount_send_ready(AUTOMOUNT(p), status);
385 static void mount_set_state(Mount *m, MountState state) {
386 MountState old_state;
389 old_state = m->state;
392 if (state != MOUNT_MOUNTING &&
393 state != MOUNT_MOUNTING_DONE &&
394 state != MOUNT_REMOUNTING &&
395 state != MOUNT_UNMOUNTING &&
396 state != MOUNT_MOUNTING_SIGTERM &&
397 state != MOUNT_MOUNTING_SIGKILL &&
398 state != MOUNT_UNMOUNTING_SIGTERM &&
399 state != MOUNT_UNMOUNTING_SIGKILL &&
400 state != MOUNT_REMOUNTING_SIGTERM &&
401 state != MOUNT_REMOUNTING_SIGKILL) {
402 unit_unwatch_timer(UNIT(m), &m->timer_watch);
403 mount_unwatch_control_pid(m);
404 m->control_command = NULL;
405 m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
408 if (state == MOUNT_MOUNTED ||
409 state == MOUNT_REMOUNTING)
410 mount_notify_automount(m, 0);
411 else if (state == MOUNT_DEAD ||
412 state == MOUNT_UNMOUNTING ||
413 state == MOUNT_MOUNTING_SIGTERM ||
414 state == MOUNT_MOUNTING_SIGKILL ||
415 state == MOUNT_REMOUNTING_SIGTERM ||
416 state == MOUNT_REMOUNTING_SIGKILL ||
417 state == MOUNT_UNMOUNTING_SIGTERM ||
418 state == MOUNT_UNMOUNTING_SIGKILL ||
419 state == MOUNT_MAINTENANCE)
420 mount_notify_automount(m, -ENODEV);
422 if (state != old_state)
423 log_debug("%s changed %s -> %s",
425 mount_state_to_string(old_state),
426 mount_state_to_string(state));
428 unit_notify(UNIT(m), state_translation_table[old_state], state_translation_table[state]);
431 static int mount_coldplug(Unit *u) {
433 MountState new_state = MOUNT_DEAD;
437 assert(m->state == MOUNT_DEAD);
439 if (m->deserialized_state != m->state)
440 new_state = m->deserialized_state;
441 else if (m->from_proc_self_mountinfo)
442 new_state = MOUNT_MOUNTED;
444 if (new_state != m->state) {
446 if (new_state == MOUNT_MOUNTING ||
447 new_state == MOUNT_MOUNTING_DONE ||
448 new_state == MOUNT_REMOUNTING ||
449 new_state == MOUNT_UNMOUNTING ||
450 new_state == MOUNT_MOUNTING_SIGTERM ||
451 new_state == MOUNT_MOUNTING_SIGKILL ||
452 new_state == MOUNT_UNMOUNTING_SIGTERM ||
453 new_state == MOUNT_UNMOUNTING_SIGKILL ||
454 new_state == MOUNT_REMOUNTING_SIGTERM ||
455 new_state == MOUNT_REMOUNTING_SIGKILL) {
457 if (m->control_pid <= 0)
460 if ((r = unit_watch_pid(UNIT(m), m->control_pid)) < 0)
463 if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
467 mount_set_state(m, new_state);
473 static void mount_dump(Unit *u, FILE *f, const char *prefix) {
480 if (m->from_proc_self_mountinfo)
481 p = &m->parameters_proc_self_mountinfo;
482 else if (m->from_fragment)
483 p = &m->parameters_fragment;
485 p = &m->parameters_etc_fstab;
488 "%sMount State: %s\n"
491 "%sFile System Type: %s\n"
493 "%sFrom /etc/fstab: %s\n"
494 "%sFrom /proc/self/mountinfo: %s\n"
495 "%sFrom fragment: %s\n"
497 prefix, mount_state_to_string(m->state),
499 prefix, strna(p->what),
500 prefix, strna(p->fstype),
501 prefix, strna(p->options),
502 prefix, yes_no(m->from_etc_fstab),
503 prefix, yes_no(m->from_proc_self_mountinfo),
504 prefix, yes_no(m->from_fragment),
505 prefix, kill_mode_to_string(m->kill_mode));
507 if (m->control_pid > 0)
509 "%sControl PID: %llu\n",
510 prefix, (unsigned long long) m->control_pid);
512 exec_context_dump(&m->exec_context, f, prefix);
515 static int mount_spawn(Mount *m, ExecCommand *c, pid_t *_pid) {
523 if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
526 if ((r = exec_spawn(c,
530 m->meta.manager->environment,
533 UNIT(m)->meta.manager->confirm_spawn,
534 UNIT(m)->meta.cgroup_bondings,
538 if ((r = unit_watch_pid(UNIT(m), pid)) < 0)
539 /* FIXME: we need to do something here */
547 unit_unwatch_timer(UNIT(m), &m->timer_watch);
552 static void mount_enter_dead(Mount *m, bool success) {
558 mount_set_state(m, m->failure ? MOUNT_MAINTENANCE : MOUNT_DEAD);
561 static void mount_enter_mounted(Mount *m, bool success) {
567 mount_set_state(m, MOUNT_MOUNTED);
570 static void mount_enter_signal(Mount *m, MountState state, bool success) {
579 if (m->kill_mode != KILL_NONE) {
580 int sig = (state == MOUNT_MOUNTING_SIGTERM ||
581 state == MOUNT_UNMOUNTING_SIGTERM ||
582 state == MOUNT_REMOUNTING_SIGTERM) ? SIGTERM : SIGKILL;
584 if (m->kill_mode == KILL_CONTROL_GROUP) {
586 if ((r = cgroup_bonding_kill_list(UNIT(m)->meta.cgroup_bondings, sig)) < 0) {
587 if (r != -EAGAIN && r != -ESRCH)
593 if (!sent && m->control_pid > 0)
594 if (kill(m->kill_mode == KILL_PROCESS ? m->control_pid : -m->control_pid, sig) < 0 && errno != ESRCH) {
601 if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
604 mount_set_state(m, state);
605 } else if (state == MOUNT_REMOUNTING_SIGTERM || state == MOUNT_REMOUNTING_SIGKILL)
606 mount_enter_mounted(m, true);
608 mount_enter_dead(m, true);
613 log_warning("%s failed to kill processes: %s", UNIT(m)->meta.id, strerror(-r));
615 if (state == MOUNT_REMOUNTING_SIGTERM || state == MOUNT_REMOUNTING_SIGKILL)
616 mount_enter_mounted(m, false);
618 mount_enter_dead(m, false);
621 static void mount_enter_unmounting(Mount *m, bool success) {
629 m->control_command_id = MOUNT_EXEC_UNMOUNT;
630 m->control_command = m->exec_command + MOUNT_EXEC_UNMOUNT;
632 if ((r = exec_command_set(
639 mount_unwatch_control_pid(m);
641 if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
644 mount_set_state(m, MOUNT_UNMOUNTING);
649 log_warning("%s failed to run umount exectuable: %s", UNIT(m)->meta.id, strerror(-r));
650 mount_enter_mounted(m, false);
653 static void mount_enter_mounting(Mount *m) {
658 m->control_command_id = MOUNT_EXEC_MOUNT;
659 m->control_command = m->exec_command + MOUNT_EXEC_MOUNT;
661 if (m->from_fragment)
662 r = exec_command_set(
665 m->parameters_fragment.what,
667 "-t", m->parameters_fragment.fstype,
668 m->parameters_fragment.options ? "-o" : NULL, m->parameters_fragment.options,
670 else if (m->from_etc_fstab)
671 r = exec_command_set(
682 mount_unwatch_control_pid(m);
684 if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
687 mount_set_state(m, MOUNT_MOUNTING);
692 log_warning("%s failed to run mount exectuable: %s", UNIT(m)->meta.id, strerror(-r));
693 mount_enter_dead(m, false);
696 static void mount_enter_mounting_done(Mount *m) {
699 mount_set_state(m, MOUNT_MOUNTING_DONE);
702 static void mount_enter_remounting(Mount *m, bool success) {
710 m->control_command_id = MOUNT_EXEC_REMOUNT;
711 m->control_command = m->exec_command + MOUNT_EXEC_REMOUNT;
713 if (m->from_fragment) {
717 if (m->parameters_fragment.options) {
718 if (!(buf = strappend("remount,", m->parameters_fragment.options))) {
727 r = exec_command_set(
730 m->parameters_fragment.what,
732 "-t", m->parameters_fragment.fstype,
737 } else if (m->from_etc_fstab)
738 r = exec_command_set(
752 mount_unwatch_control_pid(m);
754 if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
757 mount_set_state(m, MOUNT_REMOUNTING);
762 mount_enter_mounted(m, false);
765 static int mount_start(Unit *u) {
770 /* We cannot fulfill this request right now, try again later
772 if (m->state == MOUNT_UNMOUNTING ||
773 m->state == MOUNT_UNMOUNTING_SIGTERM ||
774 m->state == MOUNT_UNMOUNTING_SIGKILL)
778 if (m->state == MOUNT_MOUNTING ||
779 m->state == MOUNT_MOUNTING_SIGTERM ||
780 m->state == MOUNT_MOUNTING_SIGKILL)
783 assert(m->state == MOUNT_DEAD || m->state == MOUNT_MAINTENANCE);
786 mount_enter_mounting(m);
790 static int mount_stop(Unit *u) {
795 /* Cann't do this right now. */
796 if (m->state == MOUNT_MOUNTING ||
797 m->state == MOUNT_MOUNTING_DONE ||
798 m->state == MOUNT_MOUNTING_SIGTERM ||
799 m->state == MOUNT_MOUNTING_SIGKILL ||
800 m->state == MOUNT_REMOUNTING ||
801 m->state == MOUNT_REMOUNTING_SIGTERM ||
802 m->state == MOUNT_REMOUNTING_SIGKILL)
806 if (m->state == MOUNT_UNMOUNTING ||
807 m->state == MOUNT_UNMOUNTING_SIGKILL ||
808 m->state == MOUNT_UNMOUNTING_SIGTERM)
811 assert(m->state == MOUNT_MOUNTED);
813 mount_enter_unmounting(m, true);
817 static int mount_reload(Unit *u) {
822 if (m->state == MOUNT_MOUNTING_DONE)
825 assert(m->state == MOUNT_MOUNTED);
827 mount_enter_remounting(m, true);
831 static int mount_serialize(Unit *u, FILE *f, FDSet *fds) {
838 unit_serialize_item(u, f, "state", mount_state_to_string(m->state));
839 unit_serialize_item(u, f, "failure", yes_no(m->failure));
841 if (m->control_pid > 0)
842 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) m->control_pid);
844 if (m->control_command_id >= 0)
845 unit_serialize_item(u, f, "control-command", mount_exec_command_to_string(m->control_command_id));
850 static int mount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
859 if (streq(key, "state")) {
862 if ((state = mount_state_from_string(value)) < 0)
863 log_debug("Failed to parse state value %s", value);
865 m->deserialized_state = state;
866 } else if (streq(key, "failure")) {
869 if ((b = parse_boolean(value)) < 0)
870 log_debug("Failed to parse failure value %s", value);
872 m->failure = b || m->failure;
874 } else if (streq(key, "control-pid")) {
877 if ((r = parse_pid(value, &pid)) < 0)
878 log_debug("Failed to parse control-pid value %s", value);
880 m->control_pid = pid;
881 } else if (streq(key, "control-command")) {
884 if ((id = mount_exec_command_from_string(value)) < 0)
885 log_debug("Failed to parse exec-command value %s", value);
887 m->control_command_id = id;
888 m->control_command = m->exec_command + id;
892 log_debug("Unknown serialization key '%s'", key);
897 static UnitActiveState mount_active_state(Unit *u) {
900 return state_translation_table[MOUNT(u)->state];
903 static const char *mount_sub_state_to_string(Unit *u) {
906 return mount_state_to_string(MOUNT(u)->state);
909 static bool mount_check_gc(Unit *u) {
914 return m->from_etc_fstab || m->from_proc_self_mountinfo;
917 static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) {
924 if (pid != m->control_pid)
929 success = is_clean_exit(code, status);
930 m->failure = m->failure || !success;
932 if (m->control_command) {
933 exec_status_fill(&m->control_command->exec_status, pid, code, status);
934 m->control_command = NULL;
935 m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
938 log_debug("%s control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
940 /* Note that mount(8) returning and the kernel sending us a
941 * mount table change event might happen out-of-order. If an
942 * operation succeed we assume the kernel will follow soon too
943 * and already change into the resulting state. If it fails
944 * we check if the kernel still knows about the mount. and
945 * change state accordingly. */
950 case MOUNT_MOUNTING_DONE:
951 case MOUNT_MOUNTING_SIGKILL:
952 case MOUNT_MOUNTING_SIGTERM:
953 case MOUNT_REMOUNTING:
954 case MOUNT_REMOUNTING_SIGKILL:
955 case MOUNT_REMOUNTING_SIGTERM:
958 mount_enter_mounted(m, true);
959 else if (m->from_proc_self_mountinfo)
960 mount_enter_mounted(m, false);
962 mount_enter_dead(m, false);
965 case MOUNT_UNMOUNTING:
966 case MOUNT_UNMOUNTING_SIGKILL:
967 case MOUNT_UNMOUNTING_SIGTERM:
970 mount_enter_dead(m, true);
971 else if (m->from_proc_self_mountinfo)
972 mount_enter_mounted(m, false);
974 mount_enter_dead(m, false);
978 assert_not_reached("Uh, control process died at wrong time.");
982 static void mount_timer_event(Unit *u, uint64_t elapsed, Watch *w) {
986 assert(elapsed == 1);
987 assert(w == &m->timer_watch);
992 case MOUNT_MOUNTING_DONE:
993 log_warning("%s mounting timed out. Stopping.", u->meta.id);
994 mount_enter_signal(m, MOUNT_MOUNTING_SIGTERM, false);
997 case MOUNT_REMOUNTING:
998 log_warning("%s remounting timed out. Stopping.", u->meta.id);
999 mount_enter_signal(m, MOUNT_REMOUNTING_SIGTERM, false);
1002 case MOUNT_UNMOUNTING:
1003 log_warning("%s unmounting timed out. Stopping.", u->meta.id);
1004 mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, false);
1007 case MOUNT_MOUNTING_SIGTERM:
1008 log_warning("%s mounting timed out. Killing.", u->meta.id);
1009 mount_enter_signal(m, MOUNT_MOUNTING_SIGKILL, false);
1012 case MOUNT_REMOUNTING_SIGTERM:
1013 log_warning("%s remounting timed out. Killing.", u->meta.id);
1014 mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, false);
1017 case MOUNT_UNMOUNTING_SIGTERM:
1018 log_warning("%s unmounting timed out. Killing.", u->meta.id);
1019 mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, false);
1022 case MOUNT_MOUNTING_SIGKILL:
1023 case MOUNT_REMOUNTING_SIGKILL:
1024 case MOUNT_UNMOUNTING_SIGKILL:
1025 log_warning("%s mount process still around after SIGKILL. Ignoring.", u->meta.id);
1027 if (m->from_proc_self_mountinfo)
1028 mount_enter_mounted(m, false);
1030 mount_enter_dead(m, false);
1034 assert_not_reached("Timeout at wrong time.");
1038 static int mount_add_one(
1042 const char *options,
1044 bool from_proc_self_mountinfo,
1049 char *e, *w = NULL, *o = NULL, *f = NULL;
1058 assert(!set_flags || from_proc_self_mountinfo);
1060 /* Ignore API mount points. They should never be referenced in
1061 * dependencies ever. */
1062 if (mount_point_is_api(where))
1065 if (streq(fstype, "autofs"))
1068 /* probably some kind of swap, ignore */
1069 if (!is_path(where))
1072 if (!(e = unit_name_from_path(where, ".mount")))
1075 if (!(u = manager_get_unit(m, e))) {
1078 if (!(u = unit_new(m))) {
1083 r = unit_add_name(u, e);
1089 if (!(MOUNT(u)->where = strdup(where))) {
1094 unit_add_to_load_queue(u);
1100 if (!(w = strdup(what)) ||
1101 !(o = strdup(options)) ||
1102 !(f = strdup(fstype))) {
1107 if (from_proc_self_mountinfo) {
1108 p = &MOUNT(u)->parameters_proc_self_mountinfo;
1111 MOUNT(u)->is_mounted = true;
1112 MOUNT(u)->just_mounted = !MOUNT(u)->from_proc_self_mountinfo;
1113 MOUNT(u)->just_changed = !streq_ptr(p->options, o);
1116 MOUNT(u)->from_proc_self_mountinfo = true;
1118 p = &MOUNT(u)->parameters_etc_fstab;
1119 MOUNT(u)->from_etc_fstab = true;
1131 unit_add_to_dbus_queue(u);
1146 static char *fstab_node_to_udev_node(char *p) {
1150 /* FIXME: to follow udev's logic 100% we need to leave valid
1151 * UTF8 chars unescaped */
1153 if (startswith(p, "LABEL=")) {
1155 if (!(t = xescape(p+6, "/ ")))
1158 r = asprintf(&dn, "/dev/disk/by-label/%s", t);
1167 if (startswith(p, "UUID=")) {
1169 if (!(t = xescape(p+5, "/ ")))
1172 r = asprintf(&dn, "/dev/disk/by-uuid/%s", ascii_strlower(t));
1184 static int mount_find_pri(char *options) {
1188 if (!(pri = mount_test_option(options, "pri=")))
1194 r = strtoul(pri, &end, 10);
1199 if (end == pri || (*end != ',' && *end != 0))
1205 static int mount_load_etc_fstab(Manager *m) {
1213 if (!(f = setmntent("/etc/fstab", "r")))
1216 while ((me = getmntent(f))) {
1219 if (!(what = fstab_node_to_udev_node(me->mnt_fsname))) {
1224 if (!(where = strdup(me->mnt_dir))) {
1231 path_kill_slashes(what);
1233 if (where[0] == '/')
1234 path_kill_slashes(where);
1236 if (streq(me->mnt_type, "swap")) {
1239 if ((pri = mount_find_pri(me->mnt_opts)) < 0)
1245 !!mount_test_option(me->mnt_opts, MNTOPT_NOAUTO),
1246 !!mount_test_option(me->mnt_opts, "comment=systemd.swapon"),
1249 r = mount_add_one(m, what, where, me->mnt_opts, me->mnt_type, false, false);
1265 static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) {
1267 char *device, *path, *options, *options2, *fstype, *d, *p, *o;
1271 rewind(m->proc_self_mountinfo);
1276 device = path = options = options2 = fstype = d = p = o = NULL;
1278 if ((k = fscanf(m->proc_self_mountinfo,
1279 "%*s " /* (1) mount id */
1280 "%*s " /* (2) parent id */
1281 "%*s " /* (3) major:minor */
1282 "%*s " /* (4) root */
1283 "%ms " /* (5) mount point */
1284 "%ms" /* (6) mount options */
1285 "%*[^-]" /* (7) optional fields */
1286 "- " /* (8) seperator */
1287 "%ms " /* (9) file system type */
1288 "%ms" /* (10) mount source */
1289 "%ms" /* (11) mount options 2 */
1290 "%*[^\n]", /* some rubbish at the end */
1304 if (asprintf(&o, "%s,%s", options, options2) < 0) {
1309 if (!(d = cunescape(device)) ||
1310 !(p = cunescape(path))) {
1315 if ((r = mount_add_one(m, d, p, o, fstype, true, set_flags)) < 0)
1343 static void mount_shutdown(Manager *m) {
1346 if (m->proc_self_mountinfo) {
1347 fclose(m->proc_self_mountinfo);
1348 m->proc_self_mountinfo = NULL;
1352 static int mount_enumerate(Manager *m) {
1354 struct epoll_event ev;
1357 if (!m->proc_self_mountinfo) {
1358 if (!(m->proc_self_mountinfo = fopen("/proc/self/mountinfo", "re")))
1361 m->mount_watch.type = WATCH_MOUNT;
1362 m->mount_watch.fd = fileno(m->proc_self_mountinfo);
1365 ev.events = EPOLLERR;
1366 ev.data.ptr = &m->mount_watch;
1368 if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->mount_watch.fd, &ev) < 0)
1372 if ((r = mount_load_etc_fstab(m)) < 0)
1375 if ((r = mount_load_proc_self_mountinfo(m, false)) < 0)
1385 void mount_fd_event(Manager *m, int events) {
1390 assert(events == EPOLLERR);
1392 /* The manager calls this for every fd event happening on the
1393 * /proc/self/mountinfo file, which informs us about mounting
1396 if ((r = mount_load_proc_self_mountinfo(m, true)) < 0) {
1397 log_error("Failed to reread /proc/self/mountinfo: %s", strerror(errno));
1399 /* Reset flags, just in case, for later calls */
1400 LIST_FOREACH(units_per_type, meta, m->units_per_type[UNIT_MOUNT]) {
1401 Mount *mount = (Mount*) meta;
1403 mount->is_mounted = mount->just_mounted = mount->just_changed = false;
1409 manager_dispatch_load_queue(m);
1411 LIST_FOREACH(units_per_type, meta, m->units_per_type[UNIT_MOUNT]) {
1412 Mount *mount = (Mount*) meta;
1414 if (!mount->is_mounted) {
1415 /* This has just been unmounted. */
1417 mount->from_proc_self_mountinfo = false;
1419 switch (mount->state) {
1422 mount_enter_dead(mount, true);
1426 mount_set_state(mount, mount->state);
1431 } else if (mount->just_mounted || mount->just_changed) {
1433 /* New or changed entrymount */
1435 switch (mount->state) {
1438 case MOUNT_MAINTENANCE:
1439 mount_enter_mounted(mount, true);
1442 case MOUNT_MOUNTING:
1443 mount_enter_mounting_done(mount);
1447 /* Nothing really changed, but let's
1448 * issue an notification call
1449 * nonetheless, in case somebody is
1450 * waiting for this. (e.g. file system
1451 * ro/rw remounts.) */
1452 mount_set_state(mount, mount->state);
1457 /* Reset the flags for later calls */
1458 mount->is_mounted = mount->just_mounted = mount->just_changed = false;
1462 int mount_path_is_mounted(Manager *m, const char* path) {
1472 if (!(t = strdup(path)))
1475 path_kill_slashes(t);
1481 if (!(e = unit_name_from_path(t, ".mount"))) {
1486 u = manager_get_unit(m, e);
1490 (MOUNT(u)->from_etc_fstab || MOUNT(u)->from_fragment) &&
1491 MOUNT(u)->state != MOUNT_MOUNTED) {
1496 assert_se(slash = strrchr(t, '/'));
1513 static const char* const mount_state_table[_MOUNT_STATE_MAX] = {
1514 [MOUNT_DEAD] = "dead",
1515 [MOUNT_MOUNTING] = "mounting",
1516 [MOUNT_MOUNTING_DONE] = "mounting-done",
1517 [MOUNT_MOUNTED] = "mounted",
1518 [MOUNT_REMOUNTING] = "remounting",
1519 [MOUNT_UNMOUNTING] = "unmounting",
1520 [MOUNT_MOUNTING_SIGTERM] = "mounting-sigterm",
1521 [MOUNT_MOUNTING_SIGKILL] = "mounting-sigkill",
1522 [MOUNT_REMOUNTING_SIGTERM] = "remounting-sigterm",
1523 [MOUNT_REMOUNTING_SIGKILL] = "remounting-sigkill",
1524 [MOUNT_UNMOUNTING_SIGTERM] = "unmounting-sigterm",
1525 [MOUNT_UNMOUNTING_SIGKILL] = "unmounting-sigkill",
1526 [MOUNT_MAINTENANCE] = "maintenance"
1529 DEFINE_STRING_TABLE_LOOKUP(mount_state, MountState);
1531 static const char* const mount_exec_command_table[_MOUNT_EXEC_COMMAND_MAX] = {
1532 [MOUNT_EXEC_MOUNT] = "ExecMount",
1533 [MOUNT_EXEC_UNMOUNT] = "ExecUnmount",
1534 [MOUNT_EXEC_REMOUNT] = "ExecRemount",
1537 DEFINE_STRING_TABLE_LOOKUP(mount_exec_command, MountExecCommand);
1539 const UnitVTable mount_vtable = {
1543 .no_instances = true,
1550 .coldplug = mount_coldplug,
1554 .start = mount_start,
1556 .reload = mount_reload,
1558 .serialize = mount_serialize,
1559 .deserialize_item = mount_deserialize_item,
1561 .active_state = mount_active_state,
1562 .sub_state_to_string = mount_sub_state_to_string,
1564 .check_gc = mount_check_gc,
1566 .sigchld_event = mount_sigchld_event,
1567 .timer_event = mount_timer_event,
1569 .bus_message_handler = bus_mount_message_handler,
1571 .enumerate = mount_enumerate,
1572 .shutdown = mount_shutdown