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(UNIT(m)->meta.manager, target, NULL, &tu)) < 0)
257 if (automount && m->meta.manager->running_as != MANAGER_SESSION) {
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_SESSION)
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.", UNIT(m)->meta.id);
301 if (m->meta.fragment_path && !m->parameters_fragment.what) {
302 log_error("%s's What setting is missing. Refusing.", UNIT(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,
345 (u->meta.manager->running_as == MANAGER_INIT ||
346 u->meta.manager->running_as == MANAGER_SYSTEM))) < 0)
349 if ((r = mount_add_mount_links(m)) < 0)
352 if ((r = mount_add_socket_links(m)) < 0)
355 if ((r = mount_add_swap_links(m)) < 0)
358 if ((r = mount_add_path_links(m)) < 0)
361 if ((r = mount_add_automount_links(m)) < 0)
364 if ((r = mount_add_target_links(m)) < 0)
367 if ((r = unit_add_default_cgroup(u)) < 0)
371 return mount_verify(m);
374 static int mount_notify_automount(Mount *m, int status) {
380 if ((r = unit_get_related_unit(UNIT(m), ".automount", &p)) < 0)
381 return r == -ENOENT ? 0 : r;
383 return automount_send_ready(AUTOMOUNT(p), status);
386 static void mount_set_state(Mount *m, MountState state) {
387 MountState old_state;
390 old_state = m->state;
393 if (state != MOUNT_MOUNTING &&
394 state != MOUNT_MOUNTING_DONE &&
395 state != MOUNT_REMOUNTING &&
396 state != MOUNT_UNMOUNTING &&
397 state != MOUNT_MOUNTING_SIGTERM &&
398 state != MOUNT_MOUNTING_SIGKILL &&
399 state != MOUNT_UNMOUNTING_SIGTERM &&
400 state != MOUNT_UNMOUNTING_SIGKILL &&
401 state != MOUNT_REMOUNTING_SIGTERM &&
402 state != MOUNT_REMOUNTING_SIGKILL) {
403 unit_unwatch_timer(UNIT(m), &m->timer_watch);
404 mount_unwatch_control_pid(m);
405 m->control_command = NULL;
406 m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
409 if (state == MOUNT_MOUNTED ||
410 state == MOUNT_REMOUNTING)
411 mount_notify_automount(m, 0);
412 else if (state == MOUNT_DEAD ||
413 state == MOUNT_UNMOUNTING ||
414 state == MOUNT_MOUNTING_SIGTERM ||
415 state == MOUNT_MOUNTING_SIGKILL ||
416 state == MOUNT_REMOUNTING_SIGTERM ||
417 state == MOUNT_REMOUNTING_SIGKILL ||
418 state == MOUNT_UNMOUNTING_SIGTERM ||
419 state == MOUNT_UNMOUNTING_SIGKILL ||
420 state == MOUNT_MAINTENANCE)
421 mount_notify_automount(m, -ENODEV);
423 if (state != old_state)
424 log_debug("%s changed %s -> %s",
426 mount_state_to_string(old_state),
427 mount_state_to_string(state));
429 unit_notify(UNIT(m), state_translation_table[old_state], state_translation_table[state]);
432 static int mount_coldplug(Unit *u) {
434 MountState new_state = MOUNT_DEAD;
438 assert(m->state == MOUNT_DEAD);
440 if (m->deserialized_state != m->state)
441 new_state = m->deserialized_state;
442 else if (m->from_proc_self_mountinfo)
443 new_state = MOUNT_MOUNTED;
445 if (new_state != m->state) {
447 if (new_state == MOUNT_MOUNTING ||
448 new_state == MOUNT_MOUNTING_DONE ||
449 new_state == MOUNT_REMOUNTING ||
450 new_state == MOUNT_UNMOUNTING ||
451 new_state == MOUNT_MOUNTING_SIGTERM ||
452 new_state == MOUNT_MOUNTING_SIGKILL ||
453 new_state == MOUNT_UNMOUNTING_SIGTERM ||
454 new_state == MOUNT_UNMOUNTING_SIGKILL ||
455 new_state == MOUNT_REMOUNTING_SIGTERM ||
456 new_state == MOUNT_REMOUNTING_SIGKILL) {
458 if (m->control_pid <= 0)
461 if ((r = unit_watch_pid(UNIT(m), m->control_pid)) < 0)
464 if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
468 mount_set_state(m, new_state);
474 static void mount_dump(Unit *u, FILE *f, const char *prefix) {
481 if (m->from_proc_self_mountinfo)
482 p = &m->parameters_proc_self_mountinfo;
483 else if (m->from_fragment)
484 p = &m->parameters_fragment;
486 p = &m->parameters_etc_fstab;
489 "%sMount State: %s\n"
492 "%sFile System Type: %s\n"
494 "%sFrom /etc/fstab: %s\n"
495 "%sFrom /proc/self/mountinfo: %s\n"
496 "%sFrom fragment: %s\n"
498 prefix, mount_state_to_string(m->state),
500 prefix, strna(p->what),
501 prefix, strna(p->fstype),
502 prefix, strna(p->options),
503 prefix, yes_no(m->from_etc_fstab),
504 prefix, yes_no(m->from_proc_self_mountinfo),
505 prefix, yes_no(m->from_fragment),
506 prefix, kill_mode_to_string(m->kill_mode));
508 if (m->control_pid > 0)
510 "%sControl PID: %llu\n",
511 prefix, (unsigned long long) m->control_pid);
513 exec_context_dump(&m->exec_context, f, prefix);
516 static int mount_spawn(Mount *m, ExecCommand *c, pid_t *_pid) {
524 if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
527 if ((r = exec_spawn(c,
531 m->meta.manager->environment,
534 UNIT(m)->meta.manager->confirm_spawn,
535 UNIT(m)->meta.cgroup_bondings,
539 if ((r = unit_watch_pid(UNIT(m), pid)) < 0)
540 /* FIXME: we need to do something here */
548 unit_unwatch_timer(UNIT(m), &m->timer_watch);
553 static void mount_enter_dead(Mount *m, bool success) {
559 mount_set_state(m, m->failure ? MOUNT_MAINTENANCE : MOUNT_DEAD);
562 static void mount_enter_mounted(Mount *m, bool success) {
568 mount_set_state(m, MOUNT_MOUNTED);
571 static void mount_enter_signal(Mount *m, MountState state, bool success) {
580 if (m->kill_mode != KILL_NONE) {
581 int sig = (state == MOUNT_MOUNTING_SIGTERM ||
582 state == MOUNT_UNMOUNTING_SIGTERM ||
583 state == MOUNT_REMOUNTING_SIGTERM) ? SIGTERM : SIGKILL;
585 if (m->kill_mode == KILL_CONTROL_GROUP) {
587 if ((r = cgroup_bonding_kill_list(UNIT(m)->meta.cgroup_bondings, sig)) < 0) {
588 if (r != -EAGAIN && r != -ESRCH)
594 if (!sent && m->control_pid > 0)
595 if (kill(m->kill_mode == KILL_PROCESS ? m->control_pid : -m->control_pid, sig) < 0 && errno != ESRCH) {
602 if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
605 mount_set_state(m, state);
606 } else if (state == MOUNT_REMOUNTING_SIGTERM || state == MOUNT_REMOUNTING_SIGKILL)
607 mount_enter_mounted(m, true);
609 mount_enter_dead(m, true);
614 log_warning("%s failed to kill processes: %s", UNIT(m)->meta.id, strerror(-r));
616 if (state == MOUNT_REMOUNTING_SIGTERM || state == MOUNT_REMOUNTING_SIGKILL)
617 mount_enter_mounted(m, false);
619 mount_enter_dead(m, false);
622 static void mount_enter_unmounting(Mount *m, bool success) {
630 m->control_command_id = MOUNT_EXEC_UNMOUNT;
631 m->control_command = m->exec_command + MOUNT_EXEC_UNMOUNT;
633 if ((r = exec_command_set(
640 mount_unwatch_control_pid(m);
642 if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
645 mount_set_state(m, MOUNT_UNMOUNTING);
650 log_warning("%s failed to run umount exectuable: %s", UNIT(m)->meta.id, strerror(-r));
651 mount_enter_mounted(m, false);
654 static void mount_enter_mounting(Mount *m) {
659 m->control_command_id = MOUNT_EXEC_MOUNT;
660 m->control_command = m->exec_command + MOUNT_EXEC_MOUNT;
662 if (m->from_fragment)
663 r = exec_command_set(
666 m->parameters_fragment.what,
668 "-t", m->parameters_fragment.fstype,
669 m->parameters_fragment.options ? "-o" : NULL, m->parameters_fragment.options,
671 else if (m->from_etc_fstab)
672 r = exec_command_set(
683 mount_unwatch_control_pid(m);
685 if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
688 mount_set_state(m, MOUNT_MOUNTING);
693 log_warning("%s failed to run mount exectuable: %s", UNIT(m)->meta.id, strerror(-r));
694 mount_enter_dead(m, false);
697 static void mount_enter_mounting_done(Mount *m) {
700 mount_set_state(m, MOUNT_MOUNTING_DONE);
703 static void mount_enter_remounting(Mount *m, bool success) {
711 m->control_command_id = MOUNT_EXEC_REMOUNT;
712 m->control_command = m->exec_command + MOUNT_EXEC_REMOUNT;
714 if (m->from_fragment) {
718 if (m->parameters_fragment.options) {
719 if (!(buf = strappend("remount,", m->parameters_fragment.options))) {
728 r = exec_command_set(
731 m->parameters_fragment.what,
733 "-t", m->parameters_fragment.fstype,
738 } else if (m->from_etc_fstab)
739 r = exec_command_set(
753 mount_unwatch_control_pid(m);
755 if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
758 mount_set_state(m, MOUNT_REMOUNTING);
763 mount_enter_mounted(m, false);
766 static int mount_start(Unit *u) {
771 /* We cannot fulfill this request right now, try again later
773 if (m->state == MOUNT_UNMOUNTING ||
774 m->state == MOUNT_UNMOUNTING_SIGTERM ||
775 m->state == MOUNT_UNMOUNTING_SIGKILL)
779 if (m->state == MOUNT_MOUNTING ||
780 m->state == MOUNT_MOUNTING_SIGTERM ||
781 m->state == MOUNT_MOUNTING_SIGKILL)
784 assert(m->state == MOUNT_DEAD || m->state == MOUNT_MAINTENANCE);
787 mount_enter_mounting(m);
791 static int mount_stop(Unit *u) {
796 /* Cann't do this right now. */
797 if (m->state == MOUNT_MOUNTING ||
798 m->state == MOUNT_MOUNTING_DONE ||
799 m->state == MOUNT_MOUNTING_SIGTERM ||
800 m->state == MOUNT_MOUNTING_SIGKILL ||
801 m->state == MOUNT_REMOUNTING ||
802 m->state == MOUNT_REMOUNTING_SIGTERM ||
803 m->state == MOUNT_REMOUNTING_SIGKILL)
807 if (m->state == MOUNT_UNMOUNTING ||
808 m->state == MOUNT_UNMOUNTING_SIGKILL ||
809 m->state == MOUNT_UNMOUNTING_SIGTERM)
812 assert(m->state == MOUNT_MOUNTED);
814 mount_enter_unmounting(m, true);
818 static int mount_reload(Unit *u) {
823 if (m->state == MOUNT_MOUNTING_DONE)
826 assert(m->state == MOUNT_MOUNTED);
828 mount_enter_remounting(m, true);
832 static int mount_serialize(Unit *u, FILE *f, FDSet *fds) {
839 unit_serialize_item(u, f, "state", mount_state_to_string(m->state));
840 unit_serialize_item(u, f, "failure", yes_no(m->failure));
842 if (m->control_pid > 0)
843 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) m->control_pid);
845 if (m->control_command_id >= 0)
846 unit_serialize_item(u, f, "control-command", mount_exec_command_to_string(m->control_command_id));
851 static int mount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
860 if (streq(key, "state")) {
863 if ((state = mount_state_from_string(value)) < 0)
864 log_debug("Failed to parse state value %s", value);
866 m->deserialized_state = state;
867 } else if (streq(key, "failure")) {
870 if ((b = parse_boolean(value)) < 0)
871 log_debug("Failed to parse failure value %s", value);
873 m->failure = b || m->failure;
875 } else if (streq(key, "control-pid")) {
878 if ((r = parse_pid(value, &pid)) < 0)
879 log_debug("Failed to parse control-pid value %s", value);
881 m->control_pid = pid;
882 } else if (streq(key, "control-command")) {
885 if ((id = mount_exec_command_from_string(value)) < 0)
886 log_debug("Failed to parse exec-command value %s", value);
888 m->control_command_id = id;
889 m->control_command = m->exec_command + id;
893 log_debug("Unknown serialization key '%s'", key);
898 static UnitActiveState mount_active_state(Unit *u) {
901 return state_translation_table[MOUNT(u)->state];
904 static const char *mount_sub_state_to_string(Unit *u) {
907 return mount_state_to_string(MOUNT(u)->state);
910 static bool mount_check_gc(Unit *u) {
915 return m->from_etc_fstab || m->from_proc_self_mountinfo;
918 static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) {
925 if (pid != m->control_pid)
930 success = is_clean_exit(code, status);
931 m->failure = m->failure || !success;
933 if (m->control_command) {
934 exec_status_fill(&m->control_command->exec_status, pid, code, status);
935 m->control_command = NULL;
936 m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
939 log_debug("%s control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
941 /* Note that mount(8) returning and the kernel sending us a
942 * mount table change event might happen out-of-order. If an
943 * operation succeed we assume the kernel will follow soon too
944 * and already change into the resulting state. If it fails
945 * we check if the kernel still knows about the mount. and
946 * change state accordingly. */
951 case MOUNT_MOUNTING_DONE:
952 case MOUNT_MOUNTING_SIGKILL:
953 case MOUNT_MOUNTING_SIGTERM:
954 case MOUNT_REMOUNTING:
955 case MOUNT_REMOUNTING_SIGKILL:
956 case MOUNT_REMOUNTING_SIGTERM:
959 mount_enter_mounted(m, true);
960 else if (m->from_proc_self_mountinfo)
961 mount_enter_mounted(m, false);
963 mount_enter_dead(m, false);
966 case MOUNT_UNMOUNTING:
967 case MOUNT_UNMOUNTING_SIGKILL:
968 case MOUNT_UNMOUNTING_SIGTERM:
971 mount_enter_dead(m, true);
972 else if (m->from_proc_self_mountinfo)
973 mount_enter_mounted(m, false);
975 mount_enter_dead(m, false);
979 assert_not_reached("Uh, control process died at wrong time.");
983 static void mount_timer_event(Unit *u, uint64_t elapsed, Watch *w) {
987 assert(elapsed == 1);
988 assert(w == &m->timer_watch);
993 case MOUNT_MOUNTING_DONE:
994 log_warning("%s mounting timed out. Stopping.", u->meta.id);
995 mount_enter_signal(m, MOUNT_MOUNTING_SIGTERM, false);
998 case MOUNT_REMOUNTING:
999 log_warning("%s remounting timed out. Stopping.", u->meta.id);
1000 mount_enter_signal(m, MOUNT_REMOUNTING_SIGTERM, false);
1003 case MOUNT_UNMOUNTING:
1004 log_warning("%s unmounting timed out. Stopping.", u->meta.id);
1005 mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, false);
1008 case MOUNT_MOUNTING_SIGTERM:
1009 log_warning("%s mounting timed out. Killing.", u->meta.id);
1010 mount_enter_signal(m, MOUNT_MOUNTING_SIGKILL, false);
1013 case MOUNT_REMOUNTING_SIGTERM:
1014 log_warning("%s remounting timed out. Killing.", u->meta.id);
1015 mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, false);
1018 case MOUNT_UNMOUNTING_SIGTERM:
1019 log_warning("%s unmounting timed out. Killing.", u->meta.id);
1020 mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, false);
1023 case MOUNT_MOUNTING_SIGKILL:
1024 case MOUNT_REMOUNTING_SIGKILL:
1025 case MOUNT_UNMOUNTING_SIGKILL:
1026 log_warning("%s mount process still around after SIGKILL. Ignoring.", u->meta.id);
1028 if (m->from_proc_self_mountinfo)
1029 mount_enter_mounted(m, false);
1031 mount_enter_dead(m, false);
1035 assert_not_reached("Timeout at wrong time.");
1039 static int mount_add_one(
1043 const char *options,
1045 bool from_proc_self_mountinfo,
1050 char *e, *w = NULL, *o = NULL, *f = NULL;
1059 assert(!set_flags || from_proc_self_mountinfo);
1061 /* Ignore API mount points. They should never be referenced in
1062 * dependencies ever. */
1063 if (mount_point_is_api(where))
1066 if (streq(fstype, "autofs"))
1069 /* probably some kind of swap, ignore */
1070 if (!is_path(where))
1073 if (!(e = unit_name_from_path(where, ".mount")))
1076 if (!(u = manager_get_unit(m, e))) {
1079 if (!(u = unit_new(m))) {
1084 r = unit_add_name(u, e);
1090 if (!(MOUNT(u)->where = strdup(where))) {
1095 unit_add_to_load_queue(u);
1101 if (!(w = strdup(what)) ||
1102 !(o = strdup(options)) ||
1103 !(f = strdup(fstype))) {
1108 if (from_proc_self_mountinfo) {
1109 p = &MOUNT(u)->parameters_proc_self_mountinfo;
1112 MOUNT(u)->is_mounted = true;
1113 MOUNT(u)->just_mounted = !MOUNT(u)->from_proc_self_mountinfo;
1114 MOUNT(u)->just_changed = !streq_ptr(p->options, o);
1117 MOUNT(u)->from_proc_self_mountinfo = true;
1119 p = &MOUNT(u)->parameters_etc_fstab;
1120 MOUNT(u)->from_etc_fstab = true;
1132 unit_add_to_dbus_queue(u);
1147 static char *fstab_node_to_udev_node(char *p) {
1151 /* FIXME: to follow udev's logic 100% we need to leave valid
1152 * UTF8 chars unescaped */
1154 if (startswith(p, "LABEL=")) {
1156 if (!(t = xescape(p+6, "/ ")))
1159 r = asprintf(&dn, "/dev/disk/by-label/%s", t);
1168 if (startswith(p, "UUID=")) {
1170 if (!(t = xescape(p+5, "/ ")))
1173 r = asprintf(&dn, "/dev/disk/by-uuid/%s", ascii_strlower(t));
1185 static int mount_find_pri(char *options) {
1189 if (!(pri = mount_test_option(options, "pri=")))
1195 r = strtoul(pri, &end, 10);
1200 if (end == pri || (*end != ',' && *end != 0))
1206 static int mount_load_etc_fstab(Manager *m) {
1214 if (!(f = setmntent("/etc/fstab", "r")))
1217 while ((me = getmntent(f))) {
1220 if (!(what = fstab_node_to_udev_node(me->mnt_fsname))) {
1225 if (!(where = strdup(me->mnt_dir))) {
1232 path_kill_slashes(what);
1234 if (where[0] == '/')
1235 path_kill_slashes(where);
1237 if (streq(me->mnt_type, "swap")) {
1240 if ((pri = mount_find_pri(me->mnt_opts)) < 0)
1246 !!mount_test_option(me->mnt_opts, MNTOPT_NOAUTO),
1247 !!mount_test_option(me->mnt_opts, "comment=systemd.swapon"),
1250 r = mount_add_one(m, what, where, me->mnt_opts, me->mnt_type, false, false);
1266 static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) {
1268 char *device, *path, *options, *options2, *fstype, *d, *p, *o;
1272 rewind(m->proc_self_mountinfo);
1277 device = path = options = options2 = fstype = d = p = o = NULL;
1279 if ((k = fscanf(m->proc_self_mountinfo,
1280 "%*s " /* (1) mount id */
1281 "%*s " /* (2) parent id */
1282 "%*s " /* (3) major:minor */
1283 "%*s " /* (4) root */
1284 "%ms " /* (5) mount point */
1285 "%ms" /* (6) mount options */
1286 "%*[^-]" /* (7) optional fields */
1287 "- " /* (8) seperator */
1288 "%ms " /* (9) file system type */
1289 "%ms" /* (10) mount source */
1290 "%ms" /* (11) mount options 2 */
1291 "%*[^\n]", /* some rubbish at the end */
1305 if (asprintf(&o, "%s,%s", options, options2) < 0) {
1310 if (!(d = cunescape(device)) ||
1311 !(p = cunescape(path))) {
1316 if ((r = mount_add_one(m, d, p, o, fstype, true, set_flags)) < 0)
1344 static void mount_shutdown(Manager *m) {
1347 if (m->proc_self_mountinfo) {
1348 fclose(m->proc_self_mountinfo);
1349 m->proc_self_mountinfo = NULL;
1353 static int mount_enumerate(Manager *m) {
1355 struct epoll_event ev;
1358 if (!m->proc_self_mountinfo) {
1359 if (!(m->proc_self_mountinfo = fopen("/proc/self/mountinfo", "re")))
1362 m->mount_watch.type = WATCH_MOUNT;
1363 m->mount_watch.fd = fileno(m->proc_self_mountinfo);
1366 ev.events = EPOLLERR;
1367 ev.data.ptr = &m->mount_watch;
1369 if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->mount_watch.fd, &ev) < 0)
1373 if ((r = mount_load_etc_fstab(m)) < 0)
1376 if ((r = mount_load_proc_self_mountinfo(m, false)) < 0)
1386 void mount_fd_event(Manager *m, int events) {
1391 assert(events == EPOLLERR);
1393 /* The manager calls this for every fd event happening on the
1394 * /proc/self/mountinfo file, which informs us about mounting
1397 if ((r = mount_load_proc_self_mountinfo(m, true)) < 0) {
1398 log_error("Failed to reread /proc/self/mountinfo: %s", strerror(errno));
1400 /* Reset flags, just in case, for later calls */
1401 LIST_FOREACH(units_per_type, meta, m->units_per_type[UNIT_MOUNT]) {
1402 Mount *mount = (Mount*) meta;
1404 mount->is_mounted = mount->just_mounted = mount->just_changed = false;
1410 manager_dispatch_load_queue(m);
1412 LIST_FOREACH(units_per_type, meta, m->units_per_type[UNIT_MOUNT]) {
1413 Mount *mount = (Mount*) meta;
1415 if (!mount->is_mounted) {
1416 /* This has just been unmounted. */
1418 mount->from_proc_self_mountinfo = false;
1420 switch (mount->state) {
1423 mount_enter_dead(mount, true);
1427 mount_set_state(mount, mount->state);
1432 } else if (mount->just_mounted || mount->just_changed) {
1434 /* New or changed entrymount */
1436 switch (mount->state) {
1439 case MOUNT_MAINTENANCE:
1440 mount_enter_mounted(mount, true);
1443 case MOUNT_MOUNTING:
1444 mount_enter_mounting_done(mount);
1448 /* Nothing really changed, but let's
1449 * issue an notification call
1450 * nonetheless, in case somebody is
1451 * waiting for this. (e.g. file system
1452 * ro/rw remounts.) */
1453 mount_set_state(mount, mount->state);
1458 /* Reset the flags for later calls */
1459 mount->is_mounted = mount->just_mounted = mount->just_changed = false;
1463 int mount_path_is_mounted(Manager *m, const char* path) {
1473 if (!(t = strdup(path)))
1476 path_kill_slashes(t);
1482 if (!(e = unit_name_from_path(t, ".mount"))) {
1487 u = manager_get_unit(m, e);
1491 (MOUNT(u)->from_etc_fstab || MOUNT(u)->from_fragment) &&
1492 MOUNT(u)->state != MOUNT_MOUNTED) {
1497 assert_se(slash = strrchr(t, '/'));
1514 static const char* const mount_state_table[_MOUNT_STATE_MAX] = {
1515 [MOUNT_DEAD] = "dead",
1516 [MOUNT_MOUNTING] = "mounting",
1517 [MOUNT_MOUNTING_DONE] = "mounting-done",
1518 [MOUNT_MOUNTED] = "mounted",
1519 [MOUNT_REMOUNTING] = "remounting",
1520 [MOUNT_UNMOUNTING] = "unmounting",
1521 [MOUNT_MOUNTING_SIGTERM] = "mounting-sigterm",
1522 [MOUNT_MOUNTING_SIGKILL] = "mounting-sigkill",
1523 [MOUNT_REMOUNTING_SIGTERM] = "remounting-sigterm",
1524 [MOUNT_REMOUNTING_SIGKILL] = "remounting-sigkill",
1525 [MOUNT_UNMOUNTING_SIGTERM] = "unmounting-sigterm",
1526 [MOUNT_UNMOUNTING_SIGKILL] = "unmounting-sigkill",
1527 [MOUNT_MAINTENANCE] = "maintenance"
1530 DEFINE_STRING_TABLE_LOOKUP(mount_state, MountState);
1532 static const char* const mount_exec_command_table[_MOUNT_EXEC_COMMAND_MAX] = {
1533 [MOUNT_EXEC_MOUNT] = "ExecMount",
1534 [MOUNT_EXEC_UNMOUNT] = "ExecUnmount",
1535 [MOUNT_EXEC_REMOUNT] = "ExecRemount",
1538 DEFINE_STRING_TABLE_LOOKUP(mount_exec_command, MountExecCommand);
1540 const UnitVTable mount_vtable = {
1544 .no_instances = true,
1551 .coldplug = mount_coldplug,
1555 .start = mount_start,
1557 .reload = mount_reload,
1559 .serialize = mount_serialize,
1560 .deserialize_item = mount_deserialize_item,
1562 .active_state = mount_active_state,
1563 .sub_state_to_string = mount_sub_state_to_string,
1565 .check_gc = mount_check_gc,
1567 .sigchld_event = mount_sigchld_event,
1568 .timer_event = mount_timer_event,
1570 .bus_message_handler = bus_mount_message_handler,
1572 .enumerate = mount_enumerate,
1573 .shutdown = mount_shutdown