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 mount_parameters_done(MountParameters
*p
) {
75 p
->what
= p
->options
= p
->fstype
= NULL
;
78 static void mount_done(Unit
*u
) {
86 mount_parameters_done(&m
->parameters_etc_fstab
);
87 mount_parameters_done(&m
->parameters_proc_self_mountinfo
);
88 mount_parameters_done(&m
->parameters_fragment
);
90 exec_context_done(&m
->exec_context
);
91 exec_command_done_array(m
->exec_command
, _MOUNT_EXEC_COMMAND_MAX
);
92 m
->control_command
= NULL
;
94 if (m
->control_pid
> 0) {
95 unit_unwatch_pid(u
, m
->control_pid
);
99 unit_unwatch_timer(u
, &m
->timer_watch
);
102 static void mount_init(Unit
*u
) {
106 assert(u
->meta
.load_state
== UNIT_STUB
);
109 m
->from_etc_fstab
= false;
110 m
->from_proc_self_mountinfo
= false;
111 m
->from_fragment
= false;
113 m
->is_mounted
= false;
114 m
->just_mounted
= false;
115 m
->just_changed
= false;
117 m
->timeout_usec
= DEFAULT_TIMEOUT_USEC
;
119 zero(m
->exec_command
);
120 exec_context_init(&m
->exec_context
);
127 m
->timer_watch
.type
= WATCH_INVALID
;
130 static int mount_add_node_links(Mount
*m
) {
138 /* Adds in links to the device that this node is based on */
140 if (m
->parameters_fragment
.what
)
141 what
= m
->parameters_fragment
.what
;
142 else if (m
->parameters_etc_fstab
.what
)
143 what
= m
->parameters_etc_fstab
.what
;
145 /* We observe kernel mounts only while they are live,
146 * hence don't create any links for them */
149 if (!path_startswith(what
, "/dev/"))
152 if (!(e
= unit_name_escape_path(what
+1, ".device")))
155 r
= manager_load_unit(UNIT(m
)->meta
.manager
, e
, &device
);
161 if ((r
= unit_add_dependency(UNIT(m
), UNIT_AFTER
, device
)) < 0)
164 if ((r
= unit_add_dependency(UNIT(m
), UNIT_REQUIRES
, device
)) < 0)
167 if (UNIT(m
)->meta
.manager
->running_as
== MANAGER_INIT
||
168 UNIT(m
)->meta
.manager
->running_as
== MANAGER_SYSTEM
)
169 if ((r
= unit_add_dependency(device
, UNIT_WANTS
, UNIT(m
))) < 0)
175 static int mount_add_path_links(Mount
*m
) {
181 /* Adds in link to other mount points, that might lie below or
182 * above us in the hierarchy */
184 LIST_FOREACH(units_per_type
, other
, UNIT(m
)->meta
.manager
->units_per_type
[UNIT_MOUNT
]) {
192 if (m
->meta
.load_state
!= UNIT_LOADED
)
195 if (path_startswith(m
->where
, n
->where
)) {
197 if ((r
= unit_add_dependency(UNIT(m
), UNIT_AFTER
, UNIT(other
))) < 0)
200 if (n
->from_etc_fstab
|| n
->from_fragment
)
201 if ((r
= unit_add_dependency(UNIT(m
), UNIT_REQUIRES
, UNIT(other
))) < 0)
204 } else if (path_startswith(n
->where
, m
->where
)) {
206 if ((r
= unit_add_dependency(UNIT(m
), UNIT_BEFORE
, UNIT(other
))) < 0)
209 if (m
->from_etc_fstab
|| m
->from_fragment
)
210 if ((r
= unit_add_dependency(UNIT(other
), UNIT_REQUIRES
, UNIT(m
))) < 0)
218 static bool mount_test_option(const char *haystack
, const char *needle
) {
223 /* Like glibc's hasmntopt(), but works on a string, not a
230 me
.mnt_opts
= (char*) haystack
;
232 return !!hasmntopt(&me
, needle
);
235 static int mount_add_target_links(Mount
*m
) {
243 if (m
->from_fragment
)
244 p
= &m
->parameters_fragment
;
245 else if (m
->from_etc_fstab
)
246 p
= &m
->parameters_etc_fstab
;
253 if (mount_test_option(p
->options
, MNTOPT_NOAUTO
))
256 if (mount_test_option(p
->options
, "_netdev") ||
257 fstype_is_network(p
->fstype
))
258 target
= SPECIAL_REMOTE_FS_TARGET
;
260 target
= SPECIAL_LOCAL_FS_TARGET
;
262 if ((r
= manager_load_unit(UNIT(m
)->meta
.manager
, target
, &u
)) < 0)
265 if ((r
= unit_add_dependency(u
, UNIT_WANTS
, UNIT(m
))) < 0)
268 return unit_add_dependency(UNIT(m
), UNIT_BEFORE
, u
);
271 static int mount_load(Unit
*u
) {
276 assert(u
->meta
.load_state
== UNIT_STUB
);
278 if ((r
= unit_load_fragment_and_dropin_optional(u
)) < 0)
281 /* This is a new unit? Then let's add in some extras */
282 if (u
->meta
.load_state
== UNIT_LOADED
) {
284 /* Minor validity checking */
285 if ((m
->parameters_fragment
.options
|| m
->parameters_fragment
.fstype
) && !m
->parameters_fragment
.what
)
288 if (m
->parameters_fragment
.what
)
289 m
->from_fragment
= true;
291 if ((r
= mount_add_node_links(MOUNT(u
))) < 0)
294 if ((r
= mount_add_path_links(MOUNT(u
))) < 0)
297 if ((r
= mount_add_target_links(MOUNT(u
))) < 0)
300 if ((r
= unit_add_default_cgroup(u
)) < 0)
307 static void mount_set_state(Mount
*m
, MountState state
) {
308 MountState old_state
;
311 old_state
= m
->state
;
314 if (state
!= MOUNT_MOUNTING
&&
315 state
!= MOUNT_MOUNTING_DONE
&&
316 state
!= MOUNT_REMOUNTING
&&
317 state
!= MOUNT_UNMOUNTING
&&
318 state
!= MOUNT_MOUNTING_SIGTERM
&&
319 state
!= MOUNT_MOUNTING_SIGKILL
&&
320 state
!= MOUNT_UNMOUNTING_SIGTERM
&&
321 state
!= MOUNT_UNMOUNTING_SIGKILL
&&
322 state
!= MOUNT_REMOUNTING_SIGTERM
&&
323 state
!= MOUNT_REMOUNTING_SIGKILL
) {
324 unit_unwatch_timer(UNIT(m
), &m
->timer_watch
);
326 if (m
->control_pid
> 0) {
327 unit_unwatch_pid(UNIT(m
), m
->control_pid
);
331 m
->control_command
= NULL
;
334 if (state
!= old_state
)
335 log_debug("%s changed %s → %s", unit_id(UNIT(m
)), state_string_table
[old_state
], state_string_table
[state
]);
337 unit_notify(UNIT(m
), state_translation_table
[old_state
], state_translation_table
[state
]);
340 static int mount_coldplug(Unit
*u
) {
344 assert(m
->state
== MOUNT_DEAD
);
346 if (m
->from_proc_self_mountinfo
)
347 mount_set_state(m
, MOUNT_MOUNTED
);
352 static int mount_spawn(Mount
*m
, ExecCommand
*c
, pid_t
*_pid
) {
360 if ((r
= unit_watch_timer(UNIT(m
), m
->timeout_usec
, &m
->timer_watch
)) < 0)
363 if ((r
= exec_spawn(c
,
368 UNIT(m
)->meta
.cgroup_bondings
,
372 if ((r
= unit_watch_pid(UNIT(m
), pid
)) < 0)
373 /* FIXME: we need to do something here */
381 unit_unwatch_timer(UNIT(m
), &m
->timer_watch
);
386 static void mount_dump(Unit
*u
, FILE *f
, const char *prefix
) {
393 if (m
->from_proc_self_mountinfo
)
394 p
= &m
->parameters_proc_self_mountinfo
;
395 else if (m
->from_fragment
)
396 p
= &m
->parameters_fragment
;
398 p
= &m
->parameters_etc_fstab
;
401 "%sMount State: %s\n"
404 "%sFile System Type: %s\n"
406 "%sFrom /etc/fstab: %s\n"
407 "%sFrom /proc/self/mountinfo: %s\n"
408 "%sFrom fragment: %s\n"
410 prefix
, state_string_table
[m
->state
],
412 prefix
, strna(p
->what
),
413 prefix
, strna(p
->fstype
),
414 prefix
, strna(p
->options
),
415 prefix
, yes_no(m
->from_etc_fstab
),
416 prefix
, yes_no(m
->from_proc_self_mountinfo
),
417 prefix
, yes_no(m
->from_fragment
),
418 prefix
, kill_mode_to_string(m
->kill_mode
));
420 if (m
->control_pid
> 0)
422 "%sControl PID: %llu\n",
423 prefix
, (unsigned long long) m
->control_pid
);
425 exec_context_dump(&m
->exec_context
, f
, prefix
);
428 static void mount_enter_dead(Mount
*m
, bool success
) {
434 mount_set_state(m
, m
->failure
? MOUNT_MAINTAINANCE
: MOUNT_DEAD
);
437 static void mount_enter_signal(Mount
*m
, MountState state
, bool success
) {
445 if (m
->control_pid
> 0) {
449 sig
= (state
== MOUNT_MOUNTING_SIGTERM
||
450 state
== MOUNT_UNMOUNTING_SIGTERM
||
451 state
== MOUNT_REMOUNTING_SIGTERM
) ? SIGTERM
: SIGKILL
;
453 if (m
->kill_mode
== KILL_CONTROL_GROUP
) {
455 if ((r
= cgroup_bonding_kill_list(UNIT(m
)->meta
.cgroup_bondings
, sig
)) < 0) {
456 if (r
!= -EAGAIN
&& r
!= -ESRCH
)
463 if (kill(m
->kill_mode
== KILL_PROCESS
? m
->control_pid
: -m
->control_pid
, sig
) < 0 && errno
!= ESRCH
) {
469 mount_set_state(m
, state
);
471 if (m
->control_pid
<= 0)
472 mount_enter_dead(m
, true);
477 log_warning("%s failed to kill processes: %s", unit_id(UNIT(m
)), strerror(-r
));
478 mount_enter_dead(m
, false);
481 static void mount_enter_mounted(Mount
*m
, bool success
) {
487 mount_set_state(m
, MOUNT_MOUNTED
);
490 static void mount_enter_unmounting(Mount
*m
, bool success
) {
499 m
->control_command
= c
= m
->exec_command
+ MOUNT_EXEC_UNMOUNT
;
501 if ((r
= exec_command_set(
508 if ((r
= mount_spawn(m
, c
, &m
->control_pid
)) < 0)
511 mount_set_state(m
, MOUNT_UNMOUNTING
);
516 log_warning("%s failed to run umount exectuable: %s", unit_id(UNIT(m
)), strerror(-r
));
517 mount_enter_mounted(m
, false);
520 static void mount_enter_mounting(Mount
*m
, bool success
) {
529 m
->control_command
= c
= m
->exec_command
+ MOUNT_EXEC_MOUNT
;
531 if (m
->from_fragment
)
532 r
= exec_command_set(
535 m
->parameters_fragment
.what
,
537 "-t", m
->parameters_fragment
.fstype
,
538 "-o", m
->parameters_fragment
.options
,
540 else if (m
->from_etc_fstab
)
541 r
= exec_command_set(
552 if ((r
= mount_spawn(m
, c
, &m
->control_pid
)) < 0)
555 mount_set_state(m
, MOUNT_MOUNTING
);
560 log_warning("%s failed to run mount exectuable: %s", unit_id(UNIT(m
)), strerror(-r
));
561 mount_enter_dead(m
, false);
564 static void mount_enter_mounting_done(Mount
*m
, bool success
) {
570 mount_set_state(m
, MOUNT_MOUNTING_DONE
);
573 static void mount_enter_remounting(Mount
*m
, bool success
) {
582 m
->control_command
= c
= m
->exec_command
+ MOUNT_EXEC_REMOUNT
;
584 if (m
->from_fragment
) {
588 if (m
->parameters_fragment
.options
) {
589 if (!(buf
= strappend("remount,", m
->parameters_fragment
.options
))) {
598 r
= exec_command_set(
601 m
->parameters_fragment
.what
,
603 "-t", m
->parameters_fragment
.fstype
,
608 } else if (m
->from_etc_fstab
)
609 r
= exec_command_set(
623 if ((r
= mount_spawn(m
, c
, &m
->control_pid
)) < 0)
626 mount_set_state(m
, MOUNT_REMOUNTING
);
631 mount_enter_mounted(m
, false);
634 static int mount_start(Unit
*u
) {
639 /* We cannot fulfill this request right now, try again later
641 if (m
->state
== MOUNT_UNMOUNTING
||
642 m
->state
== MOUNT_UNMOUNTING_SIGTERM
||
643 m
->state
== MOUNT_UNMOUNTING_SIGKILL
)
647 if (m
->state
== MOUNT_MOUNTING
||
648 m
->state
== MOUNT_MOUNTING_SIGTERM
||
649 m
->state
== MOUNT_MOUNTING_SIGKILL
)
652 assert(m
->state
== MOUNT_DEAD
|| m
->state
== MOUNT_MAINTAINANCE
);
656 mount_enter_mounting(m
, true);
660 static int mount_stop(Unit
*u
) {
665 /* Cann't do this right now. */
666 if (m
->state
== MOUNT_MOUNTING
||
667 m
->state
== MOUNT_MOUNTING_DONE
||
668 m
->state
== MOUNT_MOUNTING_SIGTERM
||
669 m
->state
== MOUNT_MOUNTING_SIGKILL
||
670 m
->state
== MOUNT_REMOUNTING
||
671 m
->state
== MOUNT_REMOUNTING_SIGTERM
||
672 m
->state
== MOUNT_REMOUNTING_SIGKILL
)
676 if (m
->state
== MOUNT_UNMOUNTING
||
677 m
->state
== MOUNT_UNMOUNTING_SIGKILL
||
678 m
->state
== MOUNT_UNMOUNTING_SIGTERM
)
681 assert(m
->state
== MOUNT_MOUNTED
);
683 mount_enter_unmounting(m
, true);
687 static int mount_reload(Unit
*u
) {
692 if (m
->state
== MOUNT_MOUNTING_DONE
)
695 assert(m
->state
== MOUNT_MOUNTED
);
697 mount_enter_remounting(m
, true);
701 static UnitActiveState
mount_active_state(Unit
*u
) {
704 return state_translation_table
[MOUNT(u
)->state
];
707 static void mount_sigchld_event(Unit
*u
, pid_t pid
, int code
, int status
) {
714 success
= code
== CLD_EXITED
&& status
== 0;
715 m
->failure
= m
->failure
|| !success
;
717 assert(m
->control_pid
== pid
);
718 assert(m
->control_command
);
720 exec_status_fill(&m
->control_command
->exec_status
, pid
, code
, status
);
723 log_debug("%s control process exited, code=%s status=%i", unit_id(u
), sigchld_code_to_string(code
), status
);
725 /* Note that mount(8) returning and the kernel sending us a
726 * mount table change event might happen out-of-order. If an
727 * operation succeed we assume the kernel will follow soon too
728 * and already change into the resulting state. If it fails
729 * we check if the kernel still knows about the mount. and
730 * change state accordingly. */
735 case MOUNT_MOUNTING_DONE
:
736 case MOUNT_MOUNTING_SIGKILL
:
737 case MOUNT_MOUNTING_SIGTERM
:
738 case MOUNT_REMOUNTING
:
739 case MOUNT_REMOUNTING_SIGKILL
:
740 case MOUNT_REMOUNTING_SIGTERM
:
742 if (success
&& m
->from_proc_self_mountinfo
)
743 mount_enter_mounted(m
, true);
744 else if (m
->from_proc_self_mountinfo
)
745 mount_enter_mounted(m
, false);
747 mount_enter_dead(m
, false);
750 case MOUNT_UNMOUNTING
:
751 case MOUNT_UNMOUNTING_SIGKILL
:
752 case MOUNT_UNMOUNTING_SIGTERM
:
755 mount_enter_dead(m
, true);
756 else if (m
->from_proc_self_mountinfo
)
757 mount_enter_mounted(m
, false);
759 mount_enter_dead(m
, false);
763 assert_not_reached("Uh, control process died at wrong time.");
767 static void mount_timer_event(Unit
*u
, uint64_t elapsed
, Watch
*w
) {
771 assert(elapsed
== 1);
772 assert(w
== &m
->timer_watch
);
777 case MOUNT_MOUNTING_DONE
:
778 log_warning("%s mounting timed out. Stopping.", unit_id(u
));
779 mount_enter_signal(m
, MOUNT_MOUNTING_SIGTERM
, false);
782 case MOUNT_REMOUNTING
:
783 log_warning("%s remounting timed out. Stopping.", unit_id(u
));
784 mount_enter_signal(m
, MOUNT_REMOUNTING_SIGTERM
, false);
787 case MOUNT_UNMOUNTING
:
788 log_warning("%s unmounting timed out. Stopping.", unit_id(u
));
789 mount_enter_signal(m
, MOUNT_UNMOUNTING_SIGTERM
, false);
792 case MOUNT_MOUNTING_SIGTERM
:
793 log_warning("%s mounting timed out. Killing.", unit_id(u
));
794 mount_enter_signal(m
, MOUNT_MOUNTING_SIGKILL
, false);
797 case MOUNT_REMOUNTING_SIGTERM
:
798 log_warning("%s remounting timed out. Killing.", unit_id(u
));
799 mount_enter_signal(m
, MOUNT_REMOUNTING_SIGKILL
, false);
802 case MOUNT_UNMOUNTING_SIGTERM
:
803 log_warning("%s unmounting timed out. Killing.", unit_id(u
));
804 mount_enter_signal(m
, MOUNT_UNMOUNTING_SIGKILL
, false);
807 case MOUNT_MOUNTING_SIGKILL
:
808 case MOUNT_REMOUNTING_SIGKILL
:
809 case MOUNT_UNMOUNTING_SIGKILL
:
810 log_warning("%s mount process still around after SIGKILL. Ignoring.", unit_id(u
));
812 if (m
->from_proc_self_mountinfo
)
813 mount_enter_mounted(m
, false);
815 mount_enter_dead(m
, false);
819 assert_not_reached("Timeout at wrong time.");
823 static int mount_add_one(
829 bool from_proc_self_mountinfo
,
834 char *e
, *w
= NULL
, *o
= NULL
, *f
= NULL
;
843 assert(!set_flags
|| from_proc_self_mountinfo
);
845 /* Ignore API mount points. They should never be referenced in
846 * dependencies ever. */
847 if (mount_point_is_api(where
))
850 /* probably some kind of swap, which we don't cover for now */
854 if (streq(where
, "/"))
855 e
= strdup("-.mount");
857 e
= unit_name_escape_path(where
+1, ".mount");
862 if (!(u
= manager_get_unit(m
, e
))) {
865 if (!(u
= unit_new(m
))) {
870 r
= unit_add_name(u
, e
);
876 if (!(MOUNT(u
)->where
= strdup(where
))) {
881 if ((r
= unit_set_description(u
, where
)) < 0)
884 unit_add_to_load_queue(u
);
890 if (!(w
= strdup(what
)) ||
891 !(o
= strdup(options
)) ||
892 !(f
= strdup(fstype
))) {
897 if (from_proc_self_mountinfo
) {
898 mp
= &MOUNT(u
)->parameters_proc_self_mountinfo
;
901 MOUNT(u
)->is_mounted
= true;
902 MOUNT(u
)->just_mounted
= !MOUNT(u
)->from_proc_self_mountinfo
;
903 MOUNT(u
)->just_changed
= !streq_ptr(MOUNT(u
)->parameters_proc_self_mountinfo
.options
, o
);
906 MOUNT(u
)->from_proc_self_mountinfo
= true;
909 mp
= &MOUNT(u
)->parameters_etc_fstab
;
911 MOUNT(u
)->from_etc_fstab
= true;
923 unit_add_to_dbus_queue(u
);
938 static char *fstab_node_to_udev_node(char *p
) {
942 /* FIXME: to follow udev's logic 100% we need to leave valid
943 * UTF8 chars unescaped */
945 if (startswith(p
, "LABEL=")) {
947 if (!(t
= xescape(p
+6, "/ ")))
950 r
= asprintf(&dn
, "/dev/disk/by-label/%s", t
);
959 if (startswith(p
, "UUID=")) {
961 if (!(t
= xescape(p
+5, "/ ")))
964 r
= asprintf(&dn
, "/dev/disk/by-uuid/%s", ascii_strlower(t
));
976 static int mount_load_etc_fstab(Manager
*m
) {
984 if (!(f
= setmntent("/etc/fstab", "r")))
987 while ((me
= getmntent(f
))) {
990 if (!(what
= fstab_node_to_udev_node(me
->mnt_fsname
))) {
995 if (!(where
= strdup(me
->mnt_dir
))) {
1002 path_kill_slashes(what
);
1004 if (where
[0] == '/')
1005 path_kill_slashes(where
);
1007 r
= mount_add_one(m
, what
, where
, me
->mnt_opts
, me
->mnt_type
, false, false);
1022 static int mount_load_proc_self_mountinfo(Manager
*m
, bool set_flags
) {
1024 char *device
, *path
, *options
, *fstype
, *d
, *p
;
1028 rewind(m
->proc_self_mountinfo
);
1033 device
= path
= options
= fstype
= d
= p
= NULL
;
1035 if ((k
= fscanf(m
->proc_self_mountinfo
,
1036 "%*s " /* (1) mount id */
1037 "%*s " /* (2) parent id */
1038 "%*s " /* (3) major:minor */
1039 "%*s " /* (4) root */
1040 "%ms " /* (5) mount point */
1041 "%ms" /* (6) mount options */
1042 "%*[^-]" /* (7) optional fields */
1043 "- " /* (8) seperator */
1044 "%ms " /* (9) file system type */
1045 "%ms" /* (10) mount source */
1046 "%*[^\n]", /* some rubbish at the end */
1059 if (!(d
= cunescape(device
)) ||
1060 !(p
= cunescape(path
))) {
1065 if ((r
= mount_add_one(m
, d
, p
, options
, fstype
, true, set_flags
)) < 0)
1089 static void mount_shutdown(Manager
*m
) {
1092 if (m
->proc_self_mountinfo
)
1093 fclose(m
->proc_self_mountinfo
);
1096 static int mount_enumerate(Manager
*m
) {
1098 struct epoll_event ev
;
1101 if (!(m
->proc_self_mountinfo
= fopen("/proc/self/mountinfo", "r")))
1104 m
->mount_watch
.type
= WATCH_MOUNT
;
1105 m
->mount_watch
.fd
= fileno(m
->proc_self_mountinfo
);
1108 ev
.events
= EPOLLERR
;
1109 ev
.data
.ptr
= &m
->mount_watch
;
1111 if (epoll_ctl(m
->epoll_fd
, EPOLL_CTL_ADD
, m
->mount_watch
.fd
, &ev
) < 0)
1114 if ((r
= mount_load_etc_fstab(m
)) < 0)
1117 if ((r
= mount_load_proc_self_mountinfo(m
, false)) < 0)
1127 void mount_fd_event(Manager
*m
, int events
) {
1132 assert(events
== EPOLLERR
);
1134 /* The manager calls this for every fd event happening on the
1135 * /proc/self/mountinfo file, which informs us about mounting
1138 if ((r
= mount_load_proc_self_mountinfo(m
, true)) < 0) {
1139 log_error("Failed to reread /proc/self/mountinfo: %s", strerror(-errno
));
1141 /* Reset flags, just in case, for later calls */
1142 LIST_FOREACH(units_per_type
, meta
, m
->units_per_type
[UNIT_MOUNT
]) {
1143 Mount
*mount
= (Mount
*) meta
;
1145 mount
->is_mounted
= mount
->just_mounted
= mount
->just_changed
= false;
1151 manager_dispatch_load_queue(m
);
1153 LIST_FOREACH(units_per_type
, meta
, m
->units_per_type
[UNIT_MOUNT
]) {
1154 Mount
*mount
= (Mount
*) meta
;
1156 if (!mount
->is_mounted
) {
1157 /* This has just been unmounted. */
1159 mount
->from_proc_self_mountinfo
= false;
1161 switch (mount
->state
) {
1164 mount_enter_dead(mount
, true);
1168 mount_set_state(mount
, mount
->state
);
1173 } else if (mount
->just_mounted
|| mount
->just_changed
) {
1175 /* New or changed entrymount */
1177 switch (mount
->state
) {
1180 case MOUNT_MAINTAINANCE
:
1181 mount_enter_mounted(mount
, true);
1184 case MOUNT_MOUNTING
:
1185 mount_enter_mounting_done(mount
, true);
1189 /* Nothing really changed, but let's
1190 * issue an notification call
1191 * nonetheless, in case somebody is
1192 * waiting for this. (e.g. file system
1193 * ro/rw remounts.) */
1194 mount_set_state(mount
, mount
->state
);
1199 /* Reset the flags for later calls */
1200 mount
->is_mounted
= mount
->just_mounted
= mount
->just_changed
= false;
1204 int mount_path_is_mounted(Manager
*m
, const char* path
) {
1214 if (!(t
= strdup(path
)))
1217 path_kill_slashes(t
);
1223 if (!(e
= unit_name_escape_path(t
+1, ".mount"))) {
1228 u
= manager_get_unit(m
, e
);
1232 (MOUNT(u
)->from_etc_fstab
|| MOUNT(u
)->from_fragment
) &&
1233 MOUNT(u
)->state
!= MOUNT_MOUNTED
) {
1238 assert_se(slash
= strrchr(t
, '/'));
1255 const UnitVTable mount_vtable
= {
1264 .coldplug
= mount_coldplug
,
1268 .start
= mount_start
,
1270 .reload
= mount_reload
,
1272 .active_state
= mount_active_state
,
1274 .sigchld_event
= mount_sigchld_event
,
1275 .timer_event
= mount_timer_event
,
1277 .enumerate
= mount_enumerate
,
1278 .shutdown
= mount_shutdown