2 This file is part of systemd.
4 Copyright 2010 Lennart Poettering
6 systemd is free software; you can redistribute it and/or modify it
7 under the terms of the GNU Lesser General Public License as published by
8 the Free Software Foundation; either version 2.1 of the License, or
9 (at your option) any later version.
11 systemd is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with systemd; If not, see <http://www.gnu.org/licenses/>.
23 #include <sys/epoll.h>
25 #include "sd-messages.h"
27 #include "alloc-util.h"
28 #include "dbus-mount.h"
30 #include "exit-status.h"
31 #include "formats-util.h"
32 #include "fstab-util.h"
36 #include "mount-setup.h"
37 #include "mount-util.h"
39 #include "parse-util.h"
40 #include "path-util.h"
41 #include "process-util.h"
43 #include "string-table.h"
44 #include "string-util.h"
46 #include "unit-name.h"
49 #define RETRY_UMOUNT_MAX 32
51 DEFINE_TRIVIAL_CLEANUP_FUNC(struct libmnt_table
*, mnt_free_table
);
52 DEFINE_TRIVIAL_CLEANUP_FUNC(struct libmnt_iter
*, mnt_free_iter
);
54 static const UnitActiveState state_translation_table
[_MOUNT_STATE_MAX
] = {
55 [MOUNT_DEAD
] = UNIT_INACTIVE
,
56 [MOUNT_MOUNTING
] = UNIT_ACTIVATING
,
57 [MOUNT_MOUNTING_DONE
] = UNIT_ACTIVE
,
58 [MOUNT_MOUNTED
] = UNIT_ACTIVE
,
59 [MOUNT_REMOUNTING
] = UNIT_RELOADING
,
60 [MOUNT_UNMOUNTING
] = UNIT_DEACTIVATING
,
61 [MOUNT_MOUNTING_SIGTERM
] = UNIT_DEACTIVATING
,
62 [MOUNT_MOUNTING_SIGKILL
] = UNIT_DEACTIVATING
,
63 [MOUNT_REMOUNTING_SIGTERM
] = UNIT_RELOADING
,
64 [MOUNT_REMOUNTING_SIGKILL
] = UNIT_RELOADING
,
65 [MOUNT_UNMOUNTING_SIGTERM
] = UNIT_DEACTIVATING
,
66 [MOUNT_UNMOUNTING_SIGKILL
] = UNIT_DEACTIVATING
,
67 [MOUNT_FAILED
] = UNIT_FAILED
70 static int mount_dispatch_timer(sd_event_source
*source
, usec_t usec
, void *userdata
);
71 static int mount_dispatch_io(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
);
73 static bool mount_needs_network(const char *options
, const char *fstype
) {
74 if (fstab_test_option(options
, "_netdev\0"))
77 if (fstype
&& fstype_is_network(fstype
))
83 static bool mount_is_network(const MountParameters
*p
) {
86 return mount_needs_network(p
->options
, p
->fstype
);
89 static bool mount_is_loop(const MountParameters
*p
) {
92 if (fstab_test_option(p
->options
, "loop\0"))
98 static bool mount_is_bind(const MountParameters
*p
) {
101 if (fstab_test_option(p
->options
, "bind\0" "rbind\0"))
104 if (p
->fstype
&& STR_IN_SET(p
->fstype
, "bind", "rbind"))
110 static bool mount_is_auto(const MountParameters
*p
) {
113 return !fstab_test_option(p
->options
, "noauto\0");
116 static bool mount_is_automount(const MountParameters
*p
) {
119 return fstab_test_option(p
->options
,
120 "comment=systemd.automount\0"
121 "x-systemd.automount\0");
124 static bool mount_state_active(MountState state
) {
130 MOUNT_MOUNTING_SIGTERM
,
131 MOUNT_MOUNTING_SIGKILL
,
132 MOUNT_UNMOUNTING_SIGTERM
,
133 MOUNT_UNMOUNTING_SIGKILL
,
134 MOUNT_REMOUNTING_SIGTERM
,
135 MOUNT_REMOUNTING_SIGKILL
);
138 static bool needs_quota(const MountParameters
*p
) {
141 /* Quotas are not enabled on network filesystems,
142 * but we want them, for example, on storage connected via iscsi */
143 if (p
->fstype
&& fstype_is_network(p
->fstype
))
146 if (mount_is_bind(p
))
149 return fstab_test_option(p
->options
,
150 "usrquota\0" "grpquota\0" "quota\0" "usrjquota\0" "grpjquota\0");
153 static void mount_init(Unit
*u
) {
157 assert(u
->load_state
== UNIT_STUB
);
159 m
->timeout_usec
= u
->manager
->default_timeout_start_usec
;
160 m
->directory_mode
= 0755;
162 if (unit_has_name(u
, "-.mount")) {
163 /* Don't allow start/stop for root directory */
164 u
->refuse_manual_start
= true;
165 u
->refuse_manual_stop
= true;
167 /* The stdio/kmsg bridge socket is on /, in order to avoid a
168 * dep loop, don't use kmsg logging for -.mount */
169 m
->exec_context
.std_output
= u
->manager
->default_std_output
;
170 m
->exec_context
.std_error
= u
->manager
->default_std_error
;
173 /* We need to make sure that /usr/bin/mount is always called
174 * in the same process group as us, so that the autofs kernel
175 * side doesn't send us another mount request while we are
176 * already trying to comply its last one. */
177 m
->exec_context
.same_pgrp
= true;
179 m
->control_command_id
= _MOUNT_EXEC_COMMAND_INVALID
;
181 u
->ignore_on_isolate
= true;
184 static int mount_arm_timer(Mount
*m
, usec_t usec
) {
189 if (m
->timer_event_source
) {
190 r
= sd_event_source_set_time(m
->timer_event_source
, usec
);
194 return sd_event_source_set_enabled(m
->timer_event_source
, SD_EVENT_ONESHOT
);
197 if (usec
== USEC_INFINITY
)
200 r
= sd_event_add_time(
201 UNIT(m
)->manager
->event
,
202 &m
->timer_event_source
,
205 mount_dispatch_timer
, m
);
209 (void) sd_event_source_set_description(m
->timer_event_source
, "mount-timer");
214 static void mount_unwatch_control_pid(Mount
*m
) {
217 if (m
->control_pid
<= 0)
220 unit_unwatch_pid(UNIT(m
), m
->control_pid
);
224 static void mount_parameters_done(MountParameters
*p
) {
231 p
->what
= p
->options
= p
->fstype
= NULL
;
234 static void mount_done(Unit
*u
) {
239 m
->where
= mfree(m
->where
);
241 mount_parameters_done(&m
->parameters_proc_self_mountinfo
);
242 mount_parameters_done(&m
->parameters_fragment
);
244 m
->exec_runtime
= exec_runtime_unref(m
->exec_runtime
);
245 exec_command_done_array(m
->exec_command
, _MOUNT_EXEC_COMMAND_MAX
);
246 m
->control_command
= NULL
;
248 dynamic_creds_unref(&m
->dynamic_creds
);
250 mount_unwatch_control_pid(m
);
252 m
->timer_event_source
= sd_event_source_unref(m
->timer_event_source
);
255 _pure_
static MountParameters
* get_mount_parameters_fragment(Mount
*m
) {
258 if (m
->from_fragment
)
259 return &m
->parameters_fragment
;
264 _pure_
static MountParameters
* get_mount_parameters(Mount
*m
) {
267 if (m
->from_proc_self_mountinfo
)
268 return &m
->parameters_proc_self_mountinfo
;
270 return get_mount_parameters_fragment(m
);
273 static int mount_add_mount_links(Mount
*m
) {
274 _cleanup_free_
char *parent
= NULL
;
283 if (!path_equal(m
->where
, "/")) {
284 /* Adds in links to other mount points that might lie further
285 * up in the hierarchy */
287 parent
= dirname_malloc(m
->where
);
291 r
= unit_require_mounts_for(UNIT(m
), parent
);
296 /* Adds in links to other mount points that might be needed
297 * for the source path (if this is a bind mount or a loop mount) to be
299 pm
= get_mount_parameters_fragment(m
);
300 if (pm
&& pm
->what
&&
301 path_is_absolute(pm
->what
) &&
302 (mount_is_bind(pm
) || mount_is_loop(pm
) || !mount_is_network(pm
))) {
304 r
= unit_require_mounts_for(UNIT(m
), pm
->what
);
309 /* Adds in links to other units that use this path or paths
310 * further down in the hierarchy */
311 s
= manager_get_units_requiring_mounts_for(UNIT(m
)->manager
, m
->where
);
312 SET_FOREACH(other
, s
, i
) {
314 if (other
->load_state
!= UNIT_LOADED
)
317 if (other
== UNIT(m
))
320 r
= unit_add_dependency(other
, UNIT_AFTER
, UNIT(m
), true);
324 if (UNIT(m
)->fragment_path
) {
325 /* If we have fragment configuration, then make this dependency required */
326 r
= unit_add_dependency(other
, UNIT_REQUIRES
, UNIT(m
), true);
335 static int mount_add_device_links(Mount
*m
) {
337 bool device_wants_mount
= false;
342 p
= get_mount_parameters(m
);
349 if (mount_is_bind(p
))
352 if (!is_device_path(p
->what
))
355 /* /dev/root is a really weird thing, it's not a real device,
356 * but just a path the kernel exports for the root file system
357 * specified on the kernel command line. Ignore it here. */
358 if (path_equal(p
->what
, "/dev/root"))
361 if (path_equal(m
->where
, "/"))
364 if (mount_is_auto(p
) && !mount_is_automount(p
) && MANAGER_IS_SYSTEM(UNIT(m
)->manager
))
365 device_wants_mount
= true;
367 r
= unit_add_node_link(UNIT(m
), p
->what
, device_wants_mount
, m
->from_fragment
? UNIT_BINDS_TO
: UNIT_REQUIRES
);
374 static int mount_add_quota_links(Mount
*m
) {
380 if (!MANAGER_IS_SYSTEM(UNIT(m
)->manager
))
383 p
= get_mount_parameters_fragment(m
);
390 r
= unit_add_two_dependencies_by_name(UNIT(m
), UNIT_BEFORE
, UNIT_WANTS
, SPECIAL_QUOTACHECK_SERVICE
, NULL
, true);
394 r
= unit_add_two_dependencies_by_name(UNIT(m
), UNIT_BEFORE
, UNIT_WANTS
, SPECIAL_QUOTAON_SERVICE
, NULL
, true);
401 static bool should_umount(Mount
*m
) {
404 if (PATH_IN_SET(m
->where
, "/", "/usr") ||
405 path_startswith(m
->where
, "/run/initramfs"))
408 p
= get_mount_parameters(m
);
409 if (p
&& fstab_test_option(p
->options
, "x-initrd.mount\0") &&
416 static int mount_add_default_dependencies(Mount
*m
) {
423 if (!UNIT(m
)->default_dependencies
)
426 if (!MANAGER_IS_SYSTEM(UNIT(m
)->manager
))
429 /* We do not add any default dependencies to /, /usr or
430 * /run/initramfs/, since they are guaranteed to stay
431 * mounted the whole time, since our system is on it.
432 * Also, don't bother with anything mounted below virtual
433 * file systems, it's also going to be virtual, and hence
434 * not worth the effort. */
435 if (PATH_IN_SET(m
->where
, "/", "/usr") ||
436 path_startswith(m
->where
, "/run/initramfs") ||
437 path_startswith(m
->where
, "/proc") ||
438 path_startswith(m
->where
, "/sys") ||
439 path_startswith(m
->where
, "/dev"))
442 p
= get_mount_parameters(m
);
446 if (mount_is_network(p
)) {
447 /* We order ourselves after network.target. This is
448 * primarily useful at shutdown: services that take
449 * down the network should order themselves before
450 * network.target, so that they are shut down only
451 * after this mount unit is stopped. */
453 r
= unit_add_dependency_by_name(UNIT(m
), UNIT_AFTER
, SPECIAL_NETWORK_TARGET
, NULL
, true);
457 /* We pull in network-online.target, and order
458 * ourselves after it. This is useful at start-up to
459 * actively pull in tools that want to be started
460 * before we start mounting network file systems, and
461 * whose purpose it is to delay this until the network
464 r
= unit_add_two_dependencies_by_name(UNIT(m
), UNIT_WANTS
, UNIT_AFTER
, SPECIAL_NETWORK_ONLINE_TARGET
, NULL
, true);
468 after
= SPECIAL_REMOTE_FS_PRE_TARGET
;
470 after
= SPECIAL_LOCAL_FS_PRE_TARGET
;
472 r
= unit_add_dependency_by_name(UNIT(m
), UNIT_AFTER
, after
, NULL
, true);
476 if (should_umount(m
)) {
477 r
= unit_add_two_dependencies_by_name(UNIT(m
), UNIT_BEFORE
, UNIT_CONFLICTS
, SPECIAL_UMOUNT_TARGET
, NULL
, true);
485 static int mount_verify(Mount
*m
) {
486 _cleanup_free_
char *e
= NULL
;
492 if (UNIT(m
)->load_state
!= UNIT_LOADED
)
495 if (!m
->from_fragment
&& !m
->from_proc_self_mountinfo
)
498 r
= unit_name_from_path(m
->where
, ".mount", &e
);
500 return log_unit_error_errno(UNIT(m
), r
, "Failed to generate unit name from mount path: %m");
502 if (!unit_has_name(UNIT(m
), e
)) {
503 log_unit_error(UNIT(m
), "Where= setting doesn't match unit name. Refusing.");
507 if (mount_point_is_api(m
->where
) || mount_point_ignore(m
->where
)) {
508 log_unit_error(UNIT(m
), "Cannot create mount unit for API file system %s. Refusing.", m
->where
);
512 p
= get_mount_parameters_fragment(m
);
514 log_unit_error(UNIT(m
), "What= setting is missing. Refusing.");
518 if (m
->exec_context
.pam_name
&& m
->kill_context
.kill_mode
!= KILL_CONTROL_GROUP
) {
519 log_unit_error(UNIT(m
), "Unit has PAM enabled. Kill mode must be set to control-group'. Refusing.");
526 static int mount_add_extras(Mount
*m
) {
532 if (u
->fragment_path
)
533 m
->from_fragment
= true;
536 r
= unit_name_to_path(u
->id
, &m
->where
);
541 path_kill_slashes(m
->where
);
543 if (!u
->description
) {
544 r
= unit_set_description(u
, m
->where
);
549 r
= mount_add_device_links(m
);
553 r
= mount_add_mount_links(m
);
557 r
= mount_add_quota_links(m
);
561 r
= unit_patch_contexts(u
);
565 r
= unit_add_exec_dependencies(u
, &m
->exec_context
);
569 r
= unit_set_default_slice(u
);
573 r
= mount_add_default_dependencies(m
);
580 static int mount_load(Unit
*u
) {
585 assert(u
->load_state
== UNIT_STUB
);
587 if (m
->from_proc_self_mountinfo
)
588 r
= unit_load_fragment_and_dropin_optional(u
);
590 r
= unit_load_fragment_and_dropin(u
);
595 /* This is a new unit? Then let's add in some extras */
596 if (u
->load_state
== UNIT_LOADED
) {
597 r
= mount_add_extras(m
);
602 return mount_verify(m
);
605 static void mount_set_state(Mount
*m
, MountState state
) {
606 MountState old_state
;
609 old_state
= m
->state
;
612 if (!mount_state_active(state
)) {
613 m
->timer_event_source
= sd_event_source_unref(m
->timer_event_source
);
614 mount_unwatch_control_pid(m
);
615 m
->control_command
= NULL
;
616 m
->control_command_id
= _MOUNT_EXEC_COMMAND_INVALID
;
619 if (state
!= old_state
)
620 log_unit_debug(UNIT(m
), "Changed %s -> %s", mount_state_to_string(old_state
), mount_state_to_string(state
));
622 unit_notify(UNIT(m
), state_translation_table
[old_state
], state_translation_table
[state
], m
->reload_result
== MOUNT_SUCCESS
);
623 m
->reload_result
= MOUNT_SUCCESS
;
626 static int mount_coldplug(Unit
*u
) {
628 MountState new_state
= MOUNT_DEAD
;
632 assert(m
->state
== MOUNT_DEAD
);
634 if (m
->deserialized_state
!= m
->state
)
635 new_state
= m
->deserialized_state
;
636 else if (m
->from_proc_self_mountinfo
)
637 new_state
= MOUNT_MOUNTED
;
639 if (new_state
== m
->state
)
642 if (m
->control_pid
> 0 &&
643 pid_is_unwaited(m
->control_pid
) &&
644 mount_state_active(new_state
)) {
646 r
= unit_watch_pid(UNIT(m
), m
->control_pid
);
650 r
= mount_arm_timer(m
, usec_add(u
->state_change_timestamp
.monotonic
, m
->timeout_usec
));
655 if (!IN_SET(new_state
, MOUNT_DEAD
, MOUNT_FAILED
))
656 (void) unit_setup_dynamic_creds(u
);
658 mount_set_state(m
, new_state
);
662 static void mount_dump(Unit
*u
, FILE *f
, const char *prefix
) {
669 p
= get_mount_parameters(m
);
672 "%sMount State: %s\n"
676 "%sFile System Type: %s\n"
678 "%sFrom /proc/self/mountinfo: %s\n"
679 "%sFrom fragment: %s\n"
680 "%sDirectoryMode: %04o\n",
681 prefix
, mount_state_to_string(m
->state
),
682 prefix
, mount_result_to_string(m
->result
),
684 prefix
, p
? strna(p
->what
) : "n/a",
685 prefix
, p
? strna(p
->fstype
) : "n/a",
686 prefix
, p
? strna(p
->options
) : "n/a",
687 prefix
, yes_no(m
->from_proc_self_mountinfo
),
688 prefix
, yes_no(m
->from_fragment
),
689 prefix
, m
->directory_mode
);
691 if (m
->control_pid
> 0)
693 "%sControl PID: "PID_FMT
"\n",
694 prefix
, m
->control_pid
);
696 exec_context_dump(&m
->exec_context
, f
, prefix
);
697 kill_context_dump(&m
->kill_context
, f
, prefix
);
700 static int mount_spawn(Mount
*m
, ExecCommand
*c
, pid_t
*_pid
) {
703 ExecParameters exec_params
= {
704 .flags
= EXEC_APPLY_PERMISSIONS
|EXEC_APPLY_CHROOT
|EXEC_APPLY_TTY_STDIN
,
714 (void) unit_realize_cgroup(UNIT(m
));
715 if (m
->reset_cpu_usage
) {
716 (void) unit_reset_cpu_usage(UNIT(m
));
717 m
->reset_cpu_usage
= false;
720 r
= unit_setup_exec_runtime(UNIT(m
));
724 r
= unit_setup_dynamic_creds(UNIT(m
));
728 r
= mount_arm_timer(m
, usec_add(now(CLOCK_MONOTONIC
), m
->timeout_usec
));
732 exec_params
.environment
= UNIT(m
)->manager
->environment
;
733 exec_params
.flags
|= UNIT(m
)->manager
->confirm_spawn
? EXEC_CONFIRM_SPAWN
: 0;
734 exec_params
.cgroup_supported
= UNIT(m
)->manager
->cgroup_supported
;
735 exec_params
.cgroup_path
= UNIT(m
)->cgroup_path
;
736 exec_params
.cgroup_delegate
= m
->cgroup_context
.delegate
;
737 exec_params
.runtime_prefix
= manager_get_runtime_prefix(UNIT(m
)->manager
);
739 r
= exec_spawn(UNIT(m
),
749 r
= unit_watch_pid(UNIT(m
), pid
);
751 /* FIXME: we need to do something here */
759 static void mount_enter_dead(Mount
*m
, MountResult f
) {
762 if (m
->result
== MOUNT_SUCCESS
)
765 mount_set_state(m
, m
->result
!= MOUNT_SUCCESS
? MOUNT_FAILED
: MOUNT_DEAD
);
767 exec_runtime_destroy(m
->exec_runtime
);
768 m
->exec_runtime
= exec_runtime_unref(m
->exec_runtime
);
770 exec_context_destroy_runtime_directory(&m
->exec_context
, manager_get_runtime_prefix(UNIT(m
)->manager
));
772 dynamic_creds_destroy(&m
->dynamic_creds
);
775 static void mount_enter_mounted(Mount
*m
, MountResult f
) {
778 if (m
->result
== MOUNT_SUCCESS
)
781 mount_set_state(m
, MOUNT_MOUNTED
);
784 static void mount_enter_signal(Mount
*m
, MountState state
, MountResult f
) {
789 if (m
->result
== MOUNT_SUCCESS
)
792 r
= unit_kill_context(
795 (state
!= MOUNT_MOUNTING_SIGTERM
&& state
!= MOUNT_UNMOUNTING_SIGTERM
&& state
!= MOUNT_REMOUNTING_SIGTERM
) ?
796 KILL_KILL
: KILL_TERMINATE
,
804 r
= mount_arm_timer(m
, usec_add(now(CLOCK_MONOTONIC
), m
->timeout_usec
));
808 mount_set_state(m
, state
);
809 } else if (state
== MOUNT_REMOUNTING_SIGTERM
)
810 mount_enter_signal(m
, MOUNT_REMOUNTING_SIGKILL
, MOUNT_SUCCESS
);
811 else if (state
== MOUNT_REMOUNTING_SIGKILL
)
812 mount_enter_mounted(m
, MOUNT_SUCCESS
);
813 else if (state
== MOUNT_MOUNTING_SIGTERM
)
814 mount_enter_signal(m
, MOUNT_MOUNTING_SIGKILL
, MOUNT_SUCCESS
);
815 else if (state
== MOUNT_UNMOUNTING_SIGTERM
)
816 mount_enter_signal(m
, MOUNT_UNMOUNTING_SIGKILL
, MOUNT_SUCCESS
);
818 mount_enter_dead(m
, MOUNT_SUCCESS
);
823 log_unit_warning_errno(UNIT(m
), r
, "Failed to kill processes: %m");
825 if (state
== MOUNT_REMOUNTING_SIGTERM
|| state
== MOUNT_REMOUNTING_SIGKILL
)
826 mount_enter_mounted(m
, MOUNT_FAILURE_RESOURCES
);
828 mount_enter_dead(m
, MOUNT_FAILURE_RESOURCES
);
831 static void mount_enter_unmounting(Mount
*m
) {
836 /* Start counting our attempts */
837 if (!IN_SET(m
->state
,
839 MOUNT_UNMOUNTING_SIGTERM
,
840 MOUNT_UNMOUNTING_SIGKILL
))
841 m
->n_retry_umount
= 0;
843 m
->control_command_id
= MOUNT_EXEC_UNMOUNT
;
844 m
->control_command
= m
->exec_command
+ MOUNT_EXEC_UNMOUNT
;
846 r
= exec_command_set(m
->control_command
, UMOUNT_PATH
, m
->where
, NULL
);
850 mount_unwatch_control_pid(m
);
852 r
= mount_spawn(m
, m
->control_command
, &m
->control_pid
);
856 mount_set_state(m
, MOUNT_UNMOUNTING
);
861 log_unit_warning_errno(UNIT(m
), r
, "Failed to run 'umount' task: %m");
862 mount_enter_mounted(m
, MOUNT_FAILURE_RESOURCES
);
865 static void mount_enter_mounting(Mount
*m
) {
871 m
->control_command_id
= MOUNT_EXEC_MOUNT
;
872 m
->control_command
= m
->exec_command
+ MOUNT_EXEC_MOUNT
;
874 r
= unit_fail_if_symlink(UNIT(m
), m
->where
);
878 (void) mkdir_p_label(m
->where
, m
->directory_mode
);
880 unit_warn_if_dir_nonempty(UNIT(m
), m
->where
);
882 /* Create the source directory for bind-mounts if needed */
883 p
= get_mount_parameters_fragment(m
);
884 if (p
&& mount_is_bind(p
))
885 (void) mkdir_p_label(p
->what
, m
->directory_mode
);
888 _cleanup_free_
char *opts
= NULL
;
890 r
= fstab_filter_options(p
->options
, "nofail\0" "noauto\0" "auto\0", NULL
, NULL
, &opts
);
894 r
= exec_command_set(m
->control_command
, MOUNT_PATH
, p
->what
, m
->where
, NULL
);
895 if (r
>= 0 && m
->sloppy_options
)
896 r
= exec_command_append(m
->control_command
, "-s", NULL
);
897 if (r
>= 0 && p
->fstype
)
898 r
= exec_command_append(m
->control_command
, "-t", p
->fstype
, NULL
);
899 if (r
>= 0 && !isempty(opts
))
900 r
= exec_command_append(m
->control_command
, "-o", opts
, NULL
);
907 mount_unwatch_control_pid(m
);
909 r
= mount_spawn(m
, m
->control_command
, &m
->control_pid
);
913 mount_set_state(m
, MOUNT_MOUNTING
);
918 log_unit_warning_errno(UNIT(m
), r
, "Failed to run 'mount' task: %m");
919 mount_enter_dead(m
, MOUNT_FAILURE_RESOURCES
);
922 static void mount_enter_remounting(Mount
*m
) {
928 m
->control_command_id
= MOUNT_EXEC_REMOUNT
;
929 m
->control_command
= m
->exec_command
+ MOUNT_EXEC_REMOUNT
;
931 p
= get_mount_parameters_fragment(m
);
936 o
= strjoina("remount,", p
->options
);
940 r
= exec_command_set(m
->control_command
, MOUNT_PATH
,
943 if (r
>= 0 && m
->sloppy_options
)
944 r
= exec_command_append(m
->control_command
, "-s", NULL
);
945 if (r
>= 0 && p
->fstype
)
946 r
= exec_command_append(m
->control_command
, "-t", p
->fstype
, NULL
);
953 mount_unwatch_control_pid(m
);
955 r
= mount_spawn(m
, m
->control_command
, &m
->control_pid
);
959 mount_set_state(m
, MOUNT_REMOUNTING
);
964 log_unit_warning_errno(UNIT(m
), r
, "Failed to run 'remount' task: %m");
965 m
->reload_result
= MOUNT_FAILURE_RESOURCES
;
966 mount_enter_mounted(m
, MOUNT_SUCCESS
);
969 static int mount_start(Unit
*u
) {
975 /* We cannot fulfill this request right now, try again later
977 if (m
->state
== MOUNT_UNMOUNTING
||
978 m
->state
== MOUNT_UNMOUNTING_SIGTERM
||
979 m
->state
== MOUNT_UNMOUNTING_SIGKILL
||
980 m
->state
== MOUNT_MOUNTING_SIGTERM
||
981 m
->state
== MOUNT_MOUNTING_SIGKILL
)
985 if (m
->state
== MOUNT_MOUNTING
)
988 assert(m
->state
== MOUNT_DEAD
|| m
->state
== MOUNT_FAILED
);
990 r
= unit_start_limit_test(u
);
992 mount_enter_dead(m
, MOUNT_FAILURE_START_LIMIT_HIT
);
996 m
->result
= MOUNT_SUCCESS
;
997 m
->reload_result
= MOUNT_SUCCESS
;
998 m
->reset_cpu_usage
= true;
1000 mount_enter_mounting(m
);
1004 static int mount_stop(Unit
*u
) {
1005 Mount
*m
= MOUNT(u
);
1010 if (m
->state
== MOUNT_UNMOUNTING
||
1011 m
->state
== MOUNT_UNMOUNTING_SIGKILL
||
1012 m
->state
== MOUNT_UNMOUNTING_SIGTERM
||
1013 m
->state
== MOUNT_MOUNTING_SIGTERM
||
1014 m
->state
== MOUNT_MOUNTING_SIGKILL
)
1017 assert(m
->state
== MOUNT_MOUNTING
||
1018 m
->state
== MOUNT_MOUNTING_DONE
||
1019 m
->state
== MOUNT_MOUNTED
||
1020 m
->state
== MOUNT_REMOUNTING
||
1021 m
->state
== MOUNT_REMOUNTING_SIGTERM
||
1022 m
->state
== MOUNT_REMOUNTING_SIGKILL
);
1024 mount_enter_unmounting(m
);
1028 static int mount_reload(Unit
*u
) {
1029 Mount
*m
= MOUNT(u
);
1033 if (m
->state
== MOUNT_MOUNTING_DONE
)
1036 assert(m
->state
== MOUNT_MOUNTED
);
1038 mount_enter_remounting(m
);
1042 static int mount_serialize(Unit
*u
, FILE *f
, FDSet
*fds
) {
1043 Mount
*m
= MOUNT(u
);
1049 unit_serialize_item(u
, f
, "state", mount_state_to_string(m
->state
));
1050 unit_serialize_item(u
, f
, "result", mount_result_to_string(m
->result
));
1051 unit_serialize_item(u
, f
, "reload-result", mount_result_to_string(m
->reload_result
));
1053 if (m
->control_pid
> 0)
1054 unit_serialize_item_format(u
, f
, "control-pid", PID_FMT
, m
->control_pid
);
1056 if (m
->control_command_id
>= 0)
1057 unit_serialize_item(u
, f
, "control-command", mount_exec_command_to_string(m
->control_command_id
));
1062 static int mount_deserialize_item(Unit
*u
, const char *key
, const char *value
, FDSet
*fds
) {
1063 Mount
*m
= MOUNT(u
);
1070 if (streq(key
, "state")) {
1073 if ((state
= mount_state_from_string(value
)) < 0)
1074 log_unit_debug(u
, "Failed to parse state value: %s", value
);
1076 m
->deserialized_state
= state
;
1077 } else if (streq(key
, "result")) {
1080 f
= mount_result_from_string(value
);
1082 log_unit_debug(u
, "Failed to parse result value: %s", value
);
1083 else if (f
!= MOUNT_SUCCESS
)
1086 } else if (streq(key
, "reload-result")) {
1089 f
= mount_result_from_string(value
);
1091 log_unit_debug(u
, "Failed to parse reload result value: %s", value
);
1092 else if (f
!= MOUNT_SUCCESS
)
1093 m
->reload_result
= f
;
1095 } else if (streq(key
, "control-pid")) {
1098 if (parse_pid(value
, &pid
) < 0)
1099 log_unit_debug(u
, "Failed to parse control-pid value: %s", value
);
1101 m
->control_pid
= pid
;
1102 } else if (streq(key
, "control-command")) {
1103 MountExecCommand id
;
1105 id
= mount_exec_command_from_string(value
);
1107 log_unit_debug(u
, "Failed to parse exec-command value: %s", value
);
1109 m
->control_command_id
= id
;
1110 m
->control_command
= m
->exec_command
+ id
;
1113 log_unit_debug(u
, "Unknown serialization key: %s", key
);
1118 _pure_
static UnitActiveState
mount_active_state(Unit
*u
) {
1121 return state_translation_table
[MOUNT(u
)->state
];
1124 _pure_
static const char *mount_sub_state_to_string(Unit
*u
) {
1127 return mount_state_to_string(MOUNT(u
)->state
);
1130 _pure_
static bool mount_check_gc(Unit
*u
) {
1131 Mount
*m
= MOUNT(u
);
1135 return m
->from_proc_self_mountinfo
;
1138 static void mount_sigchld_event(Unit
*u
, pid_t pid
, int code
, int status
) {
1139 Mount
*m
= MOUNT(u
);
1145 if (pid
!= m
->control_pid
)
1150 if (is_clean_exit(code
, status
, NULL
))
1152 else if (code
== CLD_EXITED
)
1153 f
= MOUNT_FAILURE_EXIT_CODE
;
1154 else if (code
== CLD_KILLED
)
1155 f
= MOUNT_FAILURE_SIGNAL
;
1156 else if (code
== CLD_DUMPED
)
1157 f
= MOUNT_FAILURE_CORE_DUMP
;
1159 assert_not_reached("Unknown code");
1161 if (m
->result
== MOUNT_SUCCESS
)
1164 if (m
->control_command
) {
1165 exec_status_exit(&m
->control_command
->exec_status
, &m
->exec_context
, pid
, code
, status
);
1167 m
->control_command
= NULL
;
1168 m
->control_command_id
= _MOUNT_EXEC_COMMAND_INVALID
;
1171 log_unit_full(u
, f
== MOUNT_SUCCESS
? LOG_DEBUG
: LOG_NOTICE
, 0,
1172 "Mount process exited, code=%s status=%i", sigchld_code_to_string(code
), status
);
1174 /* Note that mount(8) returning and the kernel sending us a
1175 * mount table change event might happen out-of-order. If an
1176 * operation succeed we assume the kernel will follow soon too
1177 * and already change into the resulting state. If it fails
1178 * we check if the kernel still knows about the mount. and
1179 * change state accordingly. */
1183 case MOUNT_MOUNTING
:
1184 case MOUNT_MOUNTING_DONE
:
1185 case MOUNT_MOUNTING_SIGKILL
:
1186 case MOUNT_MOUNTING_SIGTERM
:
1188 if (f
== MOUNT_SUCCESS
)
1189 mount_enter_mounted(m
, f
);
1190 else if (m
->from_proc_self_mountinfo
)
1191 mount_enter_mounted(m
, f
);
1193 mount_enter_dead(m
, f
);
1196 case MOUNT_REMOUNTING
:
1197 case MOUNT_REMOUNTING_SIGKILL
:
1198 case MOUNT_REMOUNTING_SIGTERM
:
1200 m
->reload_result
= f
;
1201 if (m
->from_proc_self_mountinfo
)
1202 mount_enter_mounted(m
, MOUNT_SUCCESS
);
1204 mount_enter_dead(m
, MOUNT_SUCCESS
);
1208 case MOUNT_UNMOUNTING
:
1209 case MOUNT_UNMOUNTING_SIGKILL
:
1210 case MOUNT_UNMOUNTING_SIGTERM
:
1212 if (f
== MOUNT_SUCCESS
) {
1214 if (m
->from_proc_self_mountinfo
) {
1216 /* Still a mount point? If so, let's
1217 * try again. Most likely there were
1218 * multiple mount points stacked on
1219 * top of each other. Note that due to
1220 * the io event priority logic we can
1221 * be sure the new mountinfo is loaded
1222 * before we process the SIGCHLD for
1223 * the mount command. */
1225 if (m
->n_retry_umount
< RETRY_UMOUNT_MAX
) {
1226 log_unit_debug(u
, "Mount still present, trying again.");
1227 m
->n_retry_umount
++;
1228 mount_enter_unmounting(m
);
1230 log_unit_debug(u
, "Mount still present after %u attempts to unmount, giving up.", m
->n_retry_umount
);
1231 mount_enter_mounted(m
, f
);
1234 mount_enter_dead(m
, f
);
1236 } else if (m
->from_proc_self_mountinfo
)
1237 mount_enter_mounted(m
, f
);
1239 mount_enter_dead(m
, f
);
1243 assert_not_reached("Uh, control process died at wrong time.");
1246 /* Notify clients about changed exit status */
1247 unit_add_to_dbus_queue(u
);
1250 static int mount_dispatch_timer(sd_event_source
*source
, usec_t usec
, void *userdata
) {
1251 Mount
*m
= MOUNT(userdata
);
1254 assert(m
->timer_event_source
== source
);
1258 case MOUNT_MOUNTING
:
1259 case MOUNT_MOUNTING_DONE
:
1260 log_unit_warning(UNIT(m
), "Mounting timed out. Stopping.");
1261 mount_enter_signal(m
, MOUNT_MOUNTING_SIGTERM
, MOUNT_FAILURE_TIMEOUT
);
1264 case MOUNT_REMOUNTING
:
1265 log_unit_warning(UNIT(m
), "Remounting timed out. Stopping.");
1266 m
->reload_result
= MOUNT_FAILURE_TIMEOUT
;
1267 mount_enter_mounted(m
, MOUNT_SUCCESS
);
1270 case MOUNT_UNMOUNTING
:
1271 log_unit_warning(UNIT(m
), "Unmounting timed out. Stopping.");
1272 mount_enter_signal(m
, MOUNT_UNMOUNTING_SIGTERM
, MOUNT_FAILURE_TIMEOUT
);
1275 case MOUNT_MOUNTING_SIGTERM
:
1276 if (m
->kill_context
.send_sigkill
) {
1277 log_unit_warning(UNIT(m
), "Mounting timed out. Killing.");
1278 mount_enter_signal(m
, MOUNT_MOUNTING_SIGKILL
, MOUNT_FAILURE_TIMEOUT
);
1280 log_unit_warning(UNIT(m
), "Mounting timed out. Skipping SIGKILL. Ignoring.");
1282 if (m
->from_proc_self_mountinfo
)
1283 mount_enter_mounted(m
, MOUNT_FAILURE_TIMEOUT
);
1285 mount_enter_dead(m
, MOUNT_FAILURE_TIMEOUT
);
1289 case MOUNT_REMOUNTING_SIGTERM
:
1290 if (m
->kill_context
.send_sigkill
) {
1291 log_unit_warning(UNIT(m
), "Remounting timed out. Killing.");
1292 mount_enter_signal(m
, MOUNT_REMOUNTING_SIGKILL
, MOUNT_FAILURE_TIMEOUT
);
1294 log_unit_warning(UNIT(m
), "Remounting timed out. Skipping SIGKILL. Ignoring.");
1296 if (m
->from_proc_self_mountinfo
)
1297 mount_enter_mounted(m
, MOUNT_FAILURE_TIMEOUT
);
1299 mount_enter_dead(m
, MOUNT_FAILURE_TIMEOUT
);
1303 case MOUNT_UNMOUNTING_SIGTERM
:
1304 if (m
->kill_context
.send_sigkill
) {
1305 log_unit_warning(UNIT(m
), "Unmounting timed out. Killing.");
1306 mount_enter_signal(m
, MOUNT_UNMOUNTING_SIGKILL
, MOUNT_FAILURE_TIMEOUT
);
1308 log_unit_warning(UNIT(m
), "Unmounting timed out. Skipping SIGKILL. Ignoring.");
1310 if (m
->from_proc_self_mountinfo
)
1311 mount_enter_mounted(m
, MOUNT_FAILURE_TIMEOUT
);
1313 mount_enter_dead(m
, MOUNT_FAILURE_TIMEOUT
);
1317 case MOUNT_MOUNTING_SIGKILL
:
1318 case MOUNT_REMOUNTING_SIGKILL
:
1319 case MOUNT_UNMOUNTING_SIGKILL
:
1320 log_unit_warning(UNIT(m
),"Mount process still around after SIGKILL. Ignoring.");
1322 if (m
->from_proc_self_mountinfo
)
1323 mount_enter_mounted(m
, MOUNT_FAILURE_TIMEOUT
);
1325 mount_enter_dead(m
, MOUNT_FAILURE_TIMEOUT
);
1329 assert_not_reached("Timeout at wrong time.");
1335 static int mount_setup_unit(
1339 const char *options
,
1343 _cleanup_free_
char *e
= NULL
, *w
= NULL
, *o
= NULL
, *f
= NULL
;
1344 bool load_extras
= false;
1346 bool delete, changed
= false;
1356 /* Ignore API mount points. They should never be referenced in
1357 * dependencies ever. */
1358 if (mount_point_is_api(where
) || mount_point_ignore(where
))
1361 if (streq(fstype
, "autofs"))
1364 /* probably some kind of swap, ignore */
1365 if (!is_path(where
))
1368 r
= unit_name_from_path(where
, ".mount", &e
);
1372 u
= manager_get_unit(m
, e
);
1376 u
= unit_new(m
, sizeof(Mount
));
1380 r
= unit_add_name(u
, e
);
1384 MOUNT(u
)->where
= strdup(where
);
1385 if (!MOUNT(u
)->where
) {
1390 u
->source_path
= strdup("/proc/self/mountinfo");
1391 if (!u
->source_path
) {
1396 if (MANAGER_IS_SYSTEM(m
)) {
1399 target
= mount_needs_network(options
, fstype
) ? SPECIAL_REMOTE_FS_TARGET
: SPECIAL_LOCAL_FS_TARGET
;
1400 r
= unit_add_dependency_by_name(u
, UNIT_BEFORE
, target
, NULL
, true);
1404 if (should_umount(MOUNT(u
))) {
1405 r
= unit_add_dependency_by_name(u
, UNIT_CONFLICTS
, SPECIAL_UMOUNT_TARGET
, NULL
, true);
1411 unit_add_to_load_queue(u
);
1416 if (!MOUNT(u
)->where
) {
1417 MOUNT(u
)->where
= strdup(where
);
1418 if (!MOUNT(u
)->where
) {
1424 if (MANAGER_IS_SYSTEM(m
) &&
1425 mount_needs_network(options
, fstype
)) {
1426 /* _netdev option may have shown up late, or on a
1427 * remount. Add remote-fs dependencies, even though
1428 * local-fs ones may already be there. */
1429 unit_add_dependency_by_name(u
, UNIT_BEFORE
, SPECIAL_REMOTE_FS_TARGET
, NULL
, true);
1433 if (u
->load_state
== UNIT_NOT_FOUND
) {
1434 u
->load_state
= UNIT_LOADED
;
1437 /* Load in the extras later on, after we
1438 * finished initialization of the unit */
1445 o
= strdup(options
);
1447 if (!w
|| !o
|| !f
) {
1452 p
= &MOUNT(u
)->parameters_proc_self_mountinfo
;
1454 changed
= changed
||
1455 !streq_ptr(p
->options
, options
) ||
1456 !streq_ptr(p
->what
, what
) ||
1457 !streq_ptr(p
->fstype
, fstype
);
1460 MOUNT(u
)->is_mounted
= true;
1461 MOUNT(u
)->just_mounted
= !MOUNT(u
)->from_proc_self_mountinfo
;
1462 MOUNT(u
)->just_changed
= changed
;
1465 MOUNT(u
)->from_proc_self_mountinfo
= true;
1480 r
= mount_add_extras(MOUNT(u
));
1486 unit_add_to_dbus_queue(u
);
1491 log_warning_errno(r
, "Failed to set up mount unit: %m");
1499 static int mount_load_proc_self_mountinfo(Manager
*m
, bool set_flags
) {
1500 _cleanup_(mnt_free_tablep
) struct libmnt_table
*t
= NULL
;
1501 _cleanup_(mnt_free_iterp
) struct libmnt_iter
*i
= NULL
;
1506 t
= mnt_new_table();
1510 i
= mnt_new_iter(MNT_ITER_FORWARD
);
1514 r
= mnt_table_parse_mtab(t
, NULL
);
1516 return log_error_errno(r
, "Failed to parse /proc/self/mountinfo: %m");
1520 const char *device
, *path
, *options
, *fstype
;
1521 _cleanup_free_
char *d
= NULL
, *p
= NULL
;
1522 struct libmnt_fs
*fs
;
1525 k
= mnt_table_next_fs(t
, i
, &fs
);
1529 return log_error_errno(k
, "Failed to get next entry from /proc/self/mountinfo: %m");
1531 device
= mnt_fs_get_source(fs
);
1532 path
= mnt_fs_get_target(fs
);
1533 options
= mnt_fs_get_options(fs
);
1534 fstype
= mnt_fs_get_fstype(fs
);
1536 if (!device
|| !path
)
1539 if (cunescape(device
, UNESCAPE_RELAX
, &d
) < 0)
1542 if (cunescape(path
, UNESCAPE_RELAX
, &p
) < 0)
1545 (void) device_found_node(m
, d
, true, DEVICE_FOUND_MOUNT
, set_flags
);
1547 k
= mount_setup_unit(m
, d
, p
, options
, fstype
, set_flags
);
1548 if (r
== 0 && k
< 0)
1555 static void mount_shutdown(Manager
*m
) {
1559 m
->mount_event_source
= sd_event_source_unref(m
->mount_event_source
);
1561 mnt_unref_monitor(m
->mount_monitor
);
1562 m
->mount_monitor
= NULL
;
1565 static int mount_get_timeout(Unit
*u
, usec_t
*timeout
) {
1566 Mount
*m
= MOUNT(u
);
1570 if (!m
->timer_event_source
)
1573 r
= sd_event_source_get_time(m
->timer_event_source
, &t
);
1576 if (t
== USEC_INFINITY
)
1583 static void mount_enumerate(Manager
*m
) {
1590 if (!m
->mount_monitor
) {
1593 m
->mount_monitor
= mnt_new_monitor();
1594 if (!m
->mount_monitor
) {
1599 r
= mnt_monitor_enable_kernel(m
->mount_monitor
, 1);
1601 log_error_errno(r
, "Failed to enable watching of kernel mount events: %m");
1605 r
= mnt_monitor_enable_userspace(m
->mount_monitor
, 1, NULL
);
1607 log_error_errno(r
, "Failed to enable watching of userspace mount events: %m");
1611 /* mnt_unref_monitor() will close the fd */
1612 fd
= r
= mnt_monitor_get_fd(m
->mount_monitor
);
1614 log_error_errno(r
, "Failed to acquire watch file descriptor: %m");
1618 r
= sd_event_add_io(m
->event
, &m
->mount_event_source
, fd
, EPOLLIN
, mount_dispatch_io
, m
);
1620 log_error_errno(r
, "Failed to watch mount file descriptor: %m");
1624 r
= sd_event_source_set_priority(m
->mount_event_source
, -10);
1626 log_error_errno(r
, "Failed to adjust mount watch priority: %m");
1630 (void) sd_event_source_set_description(m
->mount_event_source
, "mount-monitor-dispatch");
1633 r
= mount_load_proc_self_mountinfo(m
, false);
1643 static int mount_dispatch_io(sd_event_source
*source
, int fd
, uint32_t revents
, void *userdata
) {
1644 _cleanup_set_free_ Set
*around
= NULL
, *gone
= NULL
;
1645 Manager
*m
= userdata
;
1652 assert(revents
& EPOLLIN
);
1654 if (fd
== mnt_monitor_get_fd(m
->mount_monitor
)) {
1655 bool rescan
= false;
1657 /* Drain all events and verify that the event is valid.
1659 * Note that libmount also monitors /run/mount mkdir if the
1660 * directory does not exist yet. The mkdir may generate event
1661 * which is irrelevant for us.
1663 * error: r < 0; valid: r == 0, false positive: rc == 1 */
1665 r
= mnt_monitor_next_change(m
->mount_monitor
, NULL
, NULL
);
1669 return log_error_errno(r
, "Failed to drain libmount events");
1672 log_debug("libmount event [rescan: %s]", yes_no(rescan
));
1677 r
= mount_load_proc_self_mountinfo(m
, true);
1679 /* Reset flags, just in case, for later calls */
1680 LIST_FOREACH(units_by_type
, u
, m
->units_by_type
[UNIT_MOUNT
]) {
1681 Mount
*mount
= MOUNT(u
);
1683 mount
->is_mounted
= mount
->just_mounted
= mount
->just_changed
= false;
1689 manager_dispatch_load_queue(m
);
1691 LIST_FOREACH(units_by_type
, u
, m
->units_by_type
[UNIT_MOUNT
]) {
1692 Mount
*mount
= MOUNT(u
);
1694 if (!mount
->is_mounted
) {
1696 /* A mount point is not around right now. It
1697 * might be gone, or might never have
1700 if (mount
->from_proc_self_mountinfo
&&
1701 mount
->parameters_proc_self_mountinfo
.what
) {
1703 /* Remember that this device might just have disappeared */
1704 if (set_ensure_allocated(&gone
, &string_hash_ops
) < 0 ||
1705 set_put(gone
, mount
->parameters_proc_self_mountinfo
.what
) < 0)
1706 log_oom(); /* we don't care too much about OOM here... */
1709 mount
->from_proc_self_mountinfo
= false;
1711 switch (mount
->state
) {
1714 /* This has just been unmounted by
1715 * somebody else, follow the state
1717 mount
->result
= MOUNT_SUCCESS
; /* make sure we forget any earlier umount failures */
1718 mount_enter_dead(mount
, MOUNT_SUCCESS
);
1725 } else if (mount
->just_mounted
|| mount
->just_changed
) {
1727 /* A mount point was added or changed */
1729 switch (mount
->state
) {
1733 /* This has just been mounted by
1734 * somebody else, follow the state
1736 mount_enter_mounted(mount
, MOUNT_SUCCESS
);
1739 case MOUNT_MOUNTING
:
1740 mount_set_state(mount
, MOUNT_MOUNTING_DONE
);
1744 /* Nothing really changed, but let's
1745 * issue an notification call
1746 * nonetheless, in case somebody is
1747 * waiting for this. (e.g. file system
1748 * ro/rw remounts.) */
1749 mount_set_state(mount
, mount
->state
);
1754 if (mount
->is_mounted
&&
1755 mount
->from_proc_self_mountinfo
&&
1756 mount
->parameters_proc_self_mountinfo
.what
) {
1758 if (set_ensure_allocated(&around
, &string_hash_ops
) < 0 ||
1759 set_put(around
, mount
->parameters_proc_self_mountinfo
.what
) < 0)
1763 /* Reset the flags for later calls */
1764 mount
->is_mounted
= mount
->just_mounted
= mount
->just_changed
= false;
1767 SET_FOREACH(what
, gone
, i
) {
1768 if (set_contains(around
, what
))
1771 /* Let the device units know that the device is no longer mounted */
1772 (void) device_found_node(m
, what
, false, DEVICE_FOUND_MOUNT
, true);
1778 static void mount_reset_failed(Unit
*u
) {
1779 Mount
*m
= MOUNT(u
);
1783 if (m
->state
== MOUNT_FAILED
)
1784 mount_set_state(m
, MOUNT_DEAD
);
1786 m
->result
= MOUNT_SUCCESS
;
1787 m
->reload_result
= MOUNT_SUCCESS
;
1790 static int mount_kill(Unit
*u
, KillWho who
, int signo
, sd_bus_error
*error
) {
1791 return unit_kill_common(u
, who
, signo
, -1, MOUNT(u
)->control_pid
, error
);
1794 static int mount_control_pid(Unit
*u
) {
1795 Mount
*m
= MOUNT(u
);
1799 return m
->control_pid
;
1802 static const char* const mount_exec_command_table
[_MOUNT_EXEC_COMMAND_MAX
] = {
1803 [MOUNT_EXEC_MOUNT
] = "ExecMount",
1804 [MOUNT_EXEC_UNMOUNT
] = "ExecUnmount",
1805 [MOUNT_EXEC_REMOUNT
] = "ExecRemount",
1808 DEFINE_STRING_TABLE_LOOKUP(mount_exec_command
, MountExecCommand
);
1810 static const char* const mount_result_table
[_MOUNT_RESULT_MAX
] = {
1811 [MOUNT_SUCCESS
] = "success",
1812 [MOUNT_FAILURE_RESOURCES
] = "resources",
1813 [MOUNT_FAILURE_TIMEOUT
] = "timeout",
1814 [MOUNT_FAILURE_EXIT_CODE
] = "exit-code",
1815 [MOUNT_FAILURE_SIGNAL
] = "signal",
1816 [MOUNT_FAILURE_CORE_DUMP
] = "core-dump",
1817 [MOUNT_FAILURE_START_LIMIT_HIT
] = "start-limit-hit",
1820 DEFINE_STRING_TABLE_LOOKUP(mount_result
, MountResult
);
1822 const UnitVTable mount_vtable
= {
1823 .object_size
= sizeof(Mount
),
1824 .exec_context_offset
= offsetof(Mount
, exec_context
),
1825 .cgroup_context_offset
= offsetof(Mount
, cgroup_context
),
1826 .kill_context_offset
= offsetof(Mount
, kill_context
),
1827 .exec_runtime_offset
= offsetof(Mount
, exec_runtime
),
1828 .dynamic_creds_offset
= offsetof(Mount
, dynamic_creds
),
1834 .private_section
= "Mount",
1840 .coldplug
= mount_coldplug
,
1844 .start
= mount_start
,
1846 .reload
= mount_reload
,
1850 .serialize
= mount_serialize
,
1851 .deserialize_item
= mount_deserialize_item
,
1853 .active_state
= mount_active_state
,
1854 .sub_state_to_string
= mount_sub_state_to_string
,
1856 .check_gc
= mount_check_gc
,
1858 .sigchld_event
= mount_sigchld_event
,
1860 .reset_failed
= mount_reset_failed
,
1862 .control_pid
= mount_control_pid
,
1864 .bus_vtable
= bus_mount_vtable
,
1865 .bus_set_property
= bus_mount_set_property
,
1866 .bus_commit_properties
= bus_mount_commit_properties
,
1868 .get_timeout
= mount_get_timeout
,
1870 .can_transient
= true,
1872 .enumerate
= mount_enumerate
,
1873 .shutdown
= mount_shutdown
,
1875 .status_message_formats
= {
1876 .starting_stopping
= {
1877 [0] = "Mounting %s...",
1878 [1] = "Unmounting %s...",
1880 .finished_start_job
= {
1881 [JOB_DONE
] = "Mounted %s.",
1882 [JOB_FAILED
] = "Failed to mount %s.",
1883 [JOB_TIMEOUT
] = "Timed out mounting %s.",
1885 .finished_stop_job
= {
1886 [JOB_DONE
] = "Unmounted %s.",
1887 [JOB_FAILED
] = "Failed unmounting %s.",
1888 [JOB_TIMEOUT
] = "Timed out unmounting %s.",