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"
36 static const UnitActiveState state_translation_table[_MOUNT_STATE_MAX] = {
37 [MOUNT_DEAD] = UNIT_INACTIVE,
38 [MOUNT_MOUNTING] = UNIT_ACTIVATING,
39 [MOUNT_MOUNTING_DONE] = UNIT_ACTIVE,
40 [MOUNT_MOUNTED] = UNIT_ACTIVE,
41 [MOUNT_REMOUNTING] = UNIT_ACTIVE_RELOADING,
42 [MOUNT_UNMOUNTING] = UNIT_DEACTIVATING,
43 [MOUNT_MOUNTING_SIGTERM] = UNIT_DEACTIVATING,
44 [MOUNT_MOUNTING_SIGKILL] = UNIT_DEACTIVATING,
45 [MOUNT_REMOUNTING_SIGTERM] = UNIT_ACTIVE_RELOADING,
46 [MOUNT_REMOUNTING_SIGKILL] = UNIT_ACTIVE_RELOADING,
47 [MOUNT_UNMOUNTING_SIGTERM] = UNIT_DEACTIVATING,
48 [MOUNT_UNMOUNTING_SIGKILL] = UNIT_DEACTIVATING,
49 [MOUNT_MAINTAINANCE] = UNIT_INACTIVE,
52 static const char* const state_string_table[_MOUNT_STATE_MAX] = {
53 [MOUNT_DEAD] = "dead",
54 [MOUNT_MOUNTING] = "mounting",
55 [MOUNT_MOUNTING_DONE] = "mounting-done",
56 [MOUNT_MOUNTED] = "mounted",
57 [MOUNT_REMOUNTING] = "remounting",
58 [MOUNT_UNMOUNTING] = "unmounting",
59 [MOUNT_MOUNTING_SIGTERM] = "mounting-sigterm",
60 [MOUNT_MOUNTING_SIGKILL] = "mounting-sigkill",
61 [MOUNT_REMOUNTING_SIGTERM] = "remounting-sigterm",
62 [MOUNT_REMOUNTING_SIGKILL] = "remounting-sigkill",
63 [MOUNT_UNMOUNTING_SIGTERM] = "unmounting-sigterm",
64 [MOUNT_UNMOUNTING_SIGKILL] = "unmounting-sigkill",
65 [MOUNT_MAINTAINANCE] = "maintainance"
68 static void service_unwatch_control_pid(Mount *m) {
71 if (m->control_pid <= 0)
74 unit_unwatch_pid(UNIT(m), m->control_pid);
78 static void mount_parameters_done(MountParameters *p) {
85 p->what = p->options = p->fstype = NULL;
88 static void mount_done(Unit *u) {
96 mount_parameters_done(&m->parameters_etc_fstab);
97 mount_parameters_done(&m->parameters_proc_self_mountinfo);
98 mount_parameters_done(&m->parameters_fragment);
100 exec_context_done(&m->exec_context);
101 exec_command_done_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX);
102 m->control_command = NULL;
104 service_unwatch_control_pid(m);
106 unit_unwatch_timer(u, &m->timer_watch);
109 static void mount_init(Unit *u) {
113 assert(u->meta.load_state == UNIT_STUB);
116 m->from_etc_fstab = false;
117 m->from_proc_self_mountinfo = false;
118 m->from_fragment = false;
120 m->is_mounted = false;
121 m->just_mounted = false;
122 m->just_changed = false;
124 m->timeout_usec = DEFAULT_TIMEOUT_USEC;
126 zero(m->exec_command);
127 exec_context_init(&m->exec_context);
134 m->timer_watch.type = WATCH_INVALID;
137 static int mount_add_node_links(Mount *m) {
145 /* Adds in links to the device that this node is based on */
147 if (m->parameters_fragment.what)
148 what = m->parameters_fragment.what;
149 else if (m->parameters_etc_fstab.what)
150 what = m->parameters_etc_fstab.what;
152 /* We observe kernel mounts only while they are live,
153 * hence don't create any links for them */
156 if (!path_startswith(what, "/dev/"))
159 if (!(e = unit_name_escape_path(what+1, ".device")))
162 r = manager_load_unit(UNIT(m)->meta.manager, e, &device);
168 if ((r = unit_add_dependency(UNIT(m), UNIT_AFTER, device)) < 0)
171 if ((r = unit_add_dependency(UNIT(m), UNIT_REQUIRES, device)) < 0)
174 if (UNIT(m)->meta.manager->running_as == MANAGER_INIT ||
175 UNIT(m)->meta.manager->running_as == MANAGER_SYSTEM)
176 if ((r = unit_add_dependency(device, UNIT_WANTS, UNIT(m))) < 0)
182 static int mount_add_path_links(Mount *m) {
188 /* Adds in link to other mount points, that might lie below or
189 * above us in the hierarchy */
191 LIST_FOREACH(units_per_type, other, UNIT(m)->meta.manager->units_per_type[UNIT_MOUNT]) {
199 if (m->meta.load_state != UNIT_LOADED)
202 if (path_startswith(m->where, n->where)) {
204 if ((r = unit_add_dependency(UNIT(m), UNIT_AFTER, UNIT(other))) < 0)
207 if (n->from_etc_fstab || n->from_fragment)
208 if ((r = unit_add_dependency(UNIT(m), UNIT_REQUIRES, UNIT(other))) < 0)
211 } else if (path_startswith(n->where, m->where)) {
213 if ((r = unit_add_dependency(UNIT(m), UNIT_BEFORE, UNIT(other))) < 0)
216 if (m->from_etc_fstab || m->from_fragment)
217 if ((r = unit_add_dependency(UNIT(other), UNIT_REQUIRES, UNIT(m))) < 0)
225 static bool mount_test_option(const char *haystack, const char *needle) {
230 /* Like glibc's hasmntopt(), but works on a string, not a
237 me.mnt_opts = (char*) haystack;
239 return !!hasmntopt(&me, needle);
242 static int mount_add_target_links(Mount *m) {
252 if (m->from_fragment)
253 p = &m->parameters_fragment;
254 else if (m->from_etc_fstab)
255 p = &m->parameters_etc_fstab;
259 noauto = mount_test_option(p->options, MNTOPT_NOAUTO);
260 handle = mount_test_option(p->options, "comment=systemd.mount");
262 if (noauto && !handle)
265 if (mount_test_option(p->options, "_netdev") ||
266 fstype_is_network(p->fstype))
267 target = SPECIAL_REMOTE_FS_TARGET;
269 target = SPECIAL_LOCAL_FS_TARGET;
271 if ((r = manager_load_unit(UNIT(m)->meta.manager, target, &u)) < 0)
275 if ((r = unit_add_dependency(u, UNIT_WANTS, UNIT(m))) < 0)
278 return unit_add_dependency(UNIT(m), UNIT_BEFORE, u);
281 static int mount_load(Unit *u) {
286 assert(u->meta.load_state == UNIT_STUB);
288 if ((r = unit_load_fragment_and_dropin_optional(u)) < 0)
291 /* This is a new unit? Then let's add in some extras */
292 if (u->meta.load_state == UNIT_LOADED) {
294 /* Minor validity checking */
295 if ((m->parameters_fragment.options || m->parameters_fragment.fstype) && !m->parameters_fragment.what)
298 if (m->parameters_fragment.what)
299 m->from_fragment = true;
301 if ((r = mount_add_node_links(MOUNT(u))) < 0)
304 if ((r = mount_add_path_links(MOUNT(u))) < 0)
307 if ((r = mount_add_target_links(MOUNT(u))) < 0)
310 if ((r = unit_add_default_cgroup(u)) < 0)
317 static void mount_set_state(Mount *m, MountState state) {
318 MountState old_state;
321 old_state = m->state;
324 if (state != MOUNT_MOUNTING &&
325 state != MOUNT_MOUNTING_DONE &&
326 state != MOUNT_REMOUNTING &&
327 state != MOUNT_UNMOUNTING &&
328 state != MOUNT_MOUNTING_SIGTERM &&
329 state != MOUNT_MOUNTING_SIGKILL &&
330 state != MOUNT_UNMOUNTING_SIGTERM &&
331 state != MOUNT_UNMOUNTING_SIGKILL &&
332 state != MOUNT_REMOUNTING_SIGTERM &&
333 state != MOUNT_REMOUNTING_SIGKILL) {
334 unit_unwatch_timer(UNIT(m), &m->timer_watch);
335 service_unwatch_control_pid(m);
336 m->control_command = NULL;
339 if (state != old_state)
340 log_debug("%s changed %s → %s", unit_id(UNIT(m)), state_string_table[old_state], state_string_table[state]);
342 unit_notify(UNIT(m), state_translation_table[old_state], state_translation_table[state]);
345 static int mount_coldplug(Unit *u) {
349 assert(m->state == MOUNT_DEAD);
351 if (m->from_proc_self_mountinfo)
352 mount_set_state(m, MOUNT_MOUNTED);
357 static int mount_spawn(Mount *m, ExecCommand *c, pid_t *_pid) {
365 if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
368 if ((r = exec_spawn(c,
373 UNIT(m)->meta.manager->confirm_spawn,
374 UNIT(m)->meta.cgroup_bondings,
378 if ((r = unit_watch_pid(UNIT(m), pid)) < 0)
379 /* FIXME: we need to do something here */
387 unit_unwatch_timer(UNIT(m), &m->timer_watch);
392 static void mount_dump(Unit *u, FILE *f, const char *prefix) {
399 if (m->from_proc_self_mountinfo)
400 p = &m->parameters_proc_self_mountinfo;
401 else if (m->from_fragment)
402 p = &m->parameters_fragment;
404 p = &m->parameters_etc_fstab;
407 "%sMount State: %s\n"
410 "%sFile System Type: %s\n"
412 "%sFrom /etc/fstab: %s\n"
413 "%sFrom /proc/self/mountinfo: %s\n"
414 "%sFrom fragment: %s\n"
416 prefix, state_string_table[m->state],
418 prefix, strna(p->what),
419 prefix, strna(p->fstype),
420 prefix, strna(p->options),
421 prefix, yes_no(m->from_etc_fstab),
422 prefix, yes_no(m->from_proc_self_mountinfo),
423 prefix, yes_no(m->from_fragment),
424 prefix, kill_mode_to_string(m->kill_mode));
426 if (m->control_pid > 0)
428 "%sControl PID: %llu\n",
429 prefix, (unsigned long long) m->control_pid);
431 exec_context_dump(&m->exec_context, f, prefix);
434 static void mount_enter_dead(Mount *m, bool success) {
440 mount_set_state(m, m->failure ? MOUNT_MAINTAINANCE : MOUNT_DEAD);
443 static void mount_enter_mounted(Mount *m, bool success) {
449 mount_set_state(m, MOUNT_MOUNTED);
452 static void mount_enter_signal(Mount *m, MountState state, bool success) {
461 if (m->kill_mode != KILL_NONE) {
462 int sig = (state == MOUNT_MOUNTING_SIGTERM ||
463 state == MOUNT_UNMOUNTING_SIGTERM ||
464 state == MOUNT_REMOUNTING_SIGTERM) ? SIGTERM : SIGKILL;
466 if (m->kill_mode == KILL_CONTROL_GROUP) {
468 if ((r = cgroup_bonding_kill_list(UNIT(m)->meta.cgroup_bondings, sig)) < 0) {
469 if (r != -EAGAIN && r != -ESRCH)
475 if (!sent && m->control_pid > 0)
476 if (kill(m->kill_mode == KILL_PROCESS ? m->control_pid : -m->control_pid, sig) < 0 && errno != ESRCH) {
483 if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
486 mount_set_state(m, state);
487 } else if (state == MOUNT_REMOUNTING_SIGTERM || state == MOUNT_REMOUNTING_SIGKILL)
488 mount_enter_mounted(m, true);
490 mount_enter_dead(m, true);
495 log_warning("%s failed to kill processes: %s", unit_id(UNIT(m)), strerror(-r));
497 if (state == MOUNT_REMOUNTING_SIGTERM || state == MOUNT_REMOUNTING_SIGKILL)
498 mount_enter_mounted(m, false);
500 mount_enter_dead(m, false);
503 static void mount_enter_unmounting(Mount *m, bool success) {
512 m->control_command = c = m->exec_command + MOUNT_EXEC_UNMOUNT;
514 if ((r = exec_command_set(
521 service_unwatch_control_pid(m);
523 if ((r = mount_spawn(m, c, &m->control_pid)) < 0)
526 mount_set_state(m, MOUNT_UNMOUNTING);
531 log_warning("%s failed to run umount exectuable: %s", unit_id(UNIT(m)), strerror(-r));
532 mount_enter_mounted(m, false);
535 static void mount_enter_mounting(Mount *m, bool success) {
544 m->control_command = c = m->exec_command + MOUNT_EXEC_MOUNT;
546 if (m->from_fragment)
547 r = exec_command_set(
550 m->parameters_fragment.what,
552 "-t", m->parameters_fragment.fstype,
553 "-o", m->parameters_fragment.options,
555 else if (m->from_etc_fstab)
556 r = exec_command_set(
567 service_unwatch_control_pid(m);
569 if ((r = mount_spawn(m, c, &m->control_pid)) < 0)
572 mount_set_state(m, MOUNT_MOUNTING);
577 log_warning("%s failed to run mount exectuable: %s", unit_id(UNIT(m)), strerror(-r));
578 mount_enter_dead(m, false);
581 static void mount_enter_mounting_done(Mount *m, bool success) {
587 mount_set_state(m, MOUNT_MOUNTING_DONE);
590 static void mount_enter_remounting(Mount *m, bool success) {
599 m->control_command = c = m->exec_command + MOUNT_EXEC_REMOUNT;
601 if (m->from_fragment) {
605 if (m->parameters_fragment.options) {
606 if (!(buf = strappend("remount,", m->parameters_fragment.options))) {
615 r = exec_command_set(
618 m->parameters_fragment.what,
620 "-t", m->parameters_fragment.fstype,
625 } else if (m->from_etc_fstab)
626 r = exec_command_set(
640 service_unwatch_control_pid(m);
642 if ((r = mount_spawn(m, c, &m->control_pid)) < 0)
645 mount_set_state(m, MOUNT_REMOUNTING);
650 mount_enter_mounted(m, false);
653 static int mount_start(Unit *u) {
658 /* We cannot fulfill this request right now, try again later
660 if (m->state == MOUNT_UNMOUNTING ||
661 m->state == MOUNT_UNMOUNTING_SIGTERM ||
662 m->state == MOUNT_UNMOUNTING_SIGKILL)
666 if (m->state == MOUNT_MOUNTING ||
667 m->state == MOUNT_MOUNTING_SIGTERM ||
668 m->state == MOUNT_MOUNTING_SIGKILL)
671 assert(m->state == MOUNT_DEAD || m->state == MOUNT_MAINTAINANCE);
675 mount_enter_mounting(m, true);
679 static int mount_stop(Unit *u) {
684 /* Cann't do this right now. */
685 if (m->state == MOUNT_MOUNTING ||
686 m->state == MOUNT_MOUNTING_DONE ||
687 m->state == MOUNT_MOUNTING_SIGTERM ||
688 m->state == MOUNT_MOUNTING_SIGKILL ||
689 m->state == MOUNT_REMOUNTING ||
690 m->state == MOUNT_REMOUNTING_SIGTERM ||
691 m->state == MOUNT_REMOUNTING_SIGKILL)
695 if (m->state == MOUNT_UNMOUNTING ||
696 m->state == MOUNT_UNMOUNTING_SIGKILL ||
697 m->state == MOUNT_UNMOUNTING_SIGTERM)
700 assert(m->state == MOUNT_MOUNTED);
702 mount_enter_unmounting(m, true);
706 static int mount_reload(Unit *u) {
711 if (m->state == MOUNT_MOUNTING_DONE)
714 assert(m->state == MOUNT_MOUNTED);
716 mount_enter_remounting(m, true);
720 static UnitActiveState mount_active_state(Unit *u) {
723 return state_translation_table[MOUNT(u)->state];
726 static const char *mount_sub_state_to_string(Unit *u) {
729 return state_string_table[MOUNT(u)->state];
732 static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) {
739 success = code == CLD_EXITED && status == 0;
740 m->failure = m->failure || !success;
742 assert(m->control_pid == pid);
743 assert(m->control_command);
745 exec_status_fill(&m->control_command->exec_status, pid, code, status);
748 log_debug("%s control process exited, code=%s status=%i", unit_id(u), sigchld_code_to_string(code), status);
750 /* Note that mount(8) returning and the kernel sending us a
751 * mount table change event might happen out-of-order. If an
752 * operation succeed we assume the kernel will follow soon too
753 * and already change into the resulting state. If it fails
754 * we check if the kernel still knows about the mount. and
755 * change state accordingly. */
760 case MOUNT_MOUNTING_DONE:
761 case MOUNT_MOUNTING_SIGKILL:
762 case MOUNT_MOUNTING_SIGTERM:
763 case MOUNT_REMOUNTING:
764 case MOUNT_REMOUNTING_SIGKILL:
765 case MOUNT_REMOUNTING_SIGTERM:
767 if (success && m->from_proc_self_mountinfo)
768 mount_enter_mounted(m, true);
769 else if (m->from_proc_self_mountinfo)
770 mount_enter_mounted(m, false);
772 mount_enter_dead(m, false);
775 case MOUNT_UNMOUNTING:
776 case MOUNT_UNMOUNTING_SIGKILL:
777 case MOUNT_UNMOUNTING_SIGTERM:
780 mount_enter_dead(m, true);
781 else if (m->from_proc_self_mountinfo)
782 mount_enter_mounted(m, false);
784 mount_enter_dead(m, false);
788 assert_not_reached("Uh, control process died at wrong time.");
792 static void mount_timer_event(Unit *u, uint64_t elapsed, Watch *w) {
796 assert(elapsed == 1);
797 assert(w == &m->timer_watch);
802 case MOUNT_MOUNTING_DONE:
803 log_warning("%s mounting timed out. Stopping.", unit_id(u));
804 mount_enter_signal(m, MOUNT_MOUNTING_SIGTERM, false);
807 case MOUNT_REMOUNTING:
808 log_warning("%s remounting timed out. Stopping.", unit_id(u));
809 mount_enter_signal(m, MOUNT_REMOUNTING_SIGTERM, false);
812 case MOUNT_UNMOUNTING:
813 log_warning("%s unmounting timed out. Stopping.", unit_id(u));
814 mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, false);
817 case MOUNT_MOUNTING_SIGTERM:
818 log_warning("%s mounting timed out. Killing.", unit_id(u));
819 mount_enter_signal(m, MOUNT_MOUNTING_SIGKILL, false);
822 case MOUNT_REMOUNTING_SIGTERM:
823 log_warning("%s remounting timed out. Killing.", unit_id(u));
824 mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, false);
827 case MOUNT_UNMOUNTING_SIGTERM:
828 log_warning("%s unmounting timed out. Killing.", unit_id(u));
829 mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, false);
832 case MOUNT_MOUNTING_SIGKILL:
833 case MOUNT_REMOUNTING_SIGKILL:
834 case MOUNT_UNMOUNTING_SIGKILL:
835 log_warning("%s mount process still around after SIGKILL. Ignoring.", unit_id(u));
837 if (m->from_proc_self_mountinfo)
838 mount_enter_mounted(m, false);
840 mount_enter_dead(m, false);
844 assert_not_reached("Timeout at wrong time.");
848 static int mount_add_one(
854 bool from_proc_self_mountinfo,
859 char *e, *w = NULL, *o = NULL, *f = NULL;
868 assert(!set_flags || from_proc_self_mountinfo);
870 /* Ignore API mount points. They should never be referenced in
871 * dependencies ever. */
872 if (mount_point_is_api(where))
875 /* probably some kind of swap, which we don't cover for now */
879 if (streq(where, "/"))
880 e = strdup("-.mount");
882 e = unit_name_escape_path(where+1, ".mount");
887 if (!(u = manager_get_unit(m, e))) {
890 if (!(u = unit_new(m))) {
895 r = unit_add_name(u, e);
901 if (!(MOUNT(u)->where = strdup(where))) {
906 if ((r = unit_set_description(u, where)) < 0)
909 unit_add_to_load_queue(u);
915 if (!(w = strdup(what)) ||
916 !(o = strdup(options)) ||
917 !(f = strdup(fstype))) {
922 if (from_proc_self_mountinfo) {
923 mp = &MOUNT(u)->parameters_proc_self_mountinfo;
926 MOUNT(u)->is_mounted = true;
927 MOUNT(u)->just_mounted = !MOUNT(u)->from_proc_self_mountinfo;
928 MOUNT(u)->just_changed = !streq_ptr(MOUNT(u)->parameters_proc_self_mountinfo.options, o);
931 MOUNT(u)->from_proc_self_mountinfo = true;
934 mp = &MOUNT(u)->parameters_etc_fstab;
936 MOUNT(u)->from_etc_fstab = true;
948 unit_add_to_dbus_queue(u);
963 static char *fstab_node_to_udev_node(char *p) {
967 /* FIXME: to follow udev's logic 100% we need to leave valid
968 * UTF8 chars unescaped */
970 if (startswith(p, "LABEL=")) {
972 if (!(t = xescape(p+6, "/ ")))
975 r = asprintf(&dn, "/dev/disk/by-label/%s", t);
984 if (startswith(p, "UUID=")) {
986 if (!(t = xescape(p+5, "/ ")))
989 r = asprintf(&dn, "/dev/disk/by-uuid/%s", ascii_strlower(t));
1001 static int mount_load_etc_fstab(Manager *m) {
1009 if (!(f = setmntent("/etc/fstab", "r")))
1012 while ((me = getmntent(f))) {
1015 if (!(what = fstab_node_to_udev_node(me->mnt_fsname))) {
1020 if (!(where = strdup(me->mnt_dir))) {
1027 path_kill_slashes(what);
1029 if (where[0] == '/')
1030 path_kill_slashes(where);
1032 r = mount_add_one(m, what, where, me->mnt_opts, me->mnt_type, false, false);
1047 static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) {
1049 char *device, *path, *options, *fstype, *d, *p;
1053 rewind(m->proc_self_mountinfo);
1058 device = path = options = fstype = d = p = NULL;
1060 if ((k = fscanf(m->proc_self_mountinfo,
1061 "%*s " /* (1) mount id */
1062 "%*s " /* (2) parent id */
1063 "%*s " /* (3) major:minor */
1064 "%*s " /* (4) root */
1065 "%ms " /* (5) mount point */
1066 "%ms" /* (6) mount options */
1067 "%*[^-]" /* (7) optional fields */
1068 "- " /* (8) seperator */
1069 "%ms " /* (9) file system type */
1070 "%ms" /* (10) mount source */
1071 "%*[^\n]", /* some rubbish at the end */
1084 if (!(d = cunescape(device)) ||
1085 !(p = cunescape(path))) {
1090 if ((r = mount_add_one(m, d, p, options, fstype, true, set_flags)) < 0)
1114 static void mount_shutdown(Manager *m) {
1117 if (m->proc_self_mountinfo)
1118 fclose(m->proc_self_mountinfo);
1121 static int mount_enumerate(Manager *m) {
1123 struct epoll_event ev;
1126 if (!(m->proc_self_mountinfo = fopen("/proc/self/mountinfo", "r")))
1129 m->mount_watch.type = WATCH_MOUNT;
1130 m->mount_watch.fd = fileno(m->proc_self_mountinfo);
1133 ev.events = EPOLLERR;
1134 ev.data.ptr = &m->mount_watch;
1136 if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->mount_watch.fd, &ev) < 0)
1139 if ((r = mount_load_etc_fstab(m)) < 0)
1142 if ((r = mount_load_proc_self_mountinfo(m, false)) < 0)
1152 void mount_fd_event(Manager *m, int events) {
1157 assert(events == EPOLLERR);
1159 /* The manager calls this for every fd event happening on the
1160 * /proc/self/mountinfo file, which informs us about mounting
1163 if ((r = mount_load_proc_self_mountinfo(m, true)) < 0) {
1164 log_error("Failed to reread /proc/self/mountinfo: %s", strerror(-errno));
1166 /* Reset flags, just in case, for later calls */
1167 LIST_FOREACH(units_per_type, meta, m->units_per_type[UNIT_MOUNT]) {
1168 Mount *mount = (Mount*) meta;
1170 mount->is_mounted = mount->just_mounted = mount->just_changed = false;
1176 manager_dispatch_load_queue(m);
1178 LIST_FOREACH(units_per_type, meta, m->units_per_type[UNIT_MOUNT]) {
1179 Mount *mount = (Mount*) meta;
1181 if (!mount->is_mounted) {
1182 /* This has just been unmounted. */
1184 mount->from_proc_self_mountinfo = false;
1186 switch (mount->state) {
1189 mount_enter_dead(mount, true);
1193 mount_set_state(mount, mount->state);
1198 } else if (mount->just_mounted || mount->just_changed) {
1200 /* New or changed entrymount */
1202 switch (mount->state) {
1205 case MOUNT_MAINTAINANCE:
1206 mount_enter_mounted(mount, true);
1209 case MOUNT_MOUNTING:
1210 mount_enter_mounting_done(mount, true);
1214 /* Nothing really changed, but let's
1215 * issue an notification call
1216 * nonetheless, in case somebody is
1217 * waiting for this. (e.g. file system
1218 * ro/rw remounts.) */
1219 mount_set_state(mount, mount->state);
1224 /* Reset the flags for later calls */
1225 mount->is_mounted = mount->just_mounted = mount->just_changed = false;
1229 int mount_path_is_mounted(Manager *m, const char* path) {
1239 if (!(t = strdup(path)))
1242 path_kill_slashes(t);
1248 if (!(e = unit_name_escape_path(t+1, ".mount"))) {
1253 u = manager_get_unit(m, e);
1257 (MOUNT(u)->from_etc_fstab || MOUNT(u)->from_fragment) &&
1258 MOUNT(u)->state != MOUNT_MOUNTED) {
1263 assert_se(slash = strrchr(t, '/'));
1280 const UnitVTable mount_vtable = {
1289 .coldplug = mount_coldplug,
1293 .start = mount_start,
1295 .reload = mount_reload,
1297 .active_state = mount_active_state,
1298 .sub_state_to_string = mount_sub_state_to_string,
1300 .sigchld_event = mount_sigchld_event,
1301 .timer_event = mount_timer_event,
1303 .enumerate = mount_enumerate,
1304 .shutdown = mount_shutdown