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Systemd/src/core/mount.c
Eelco Dolstra 62bca2c657 journal: set the _SYSTEMD_UNIT field for messages from terminated processes 
As described in

  https://bugs.freedesktop.org/show_bug.cgi?id=50184

the journal currently doesn't set fields such as _SYSTEMD_UNIT
properly for messages coming from processes that have already
terminated.  This means among other things that "systemctl status" may
not show some of the output of services that wrote messages just
before they exited.

This patch fixes this by having processes that log to the journal
write their unit identifier to journald when the connection to
/run/systemd/journal/stdout is opened.  Journald stores the unit ID
and uses it to fill in _SYSTEMD_UNIT when it cannot be obtained
normally (i.e. from the cgroup).  To prevent impersonating another
unit, this information is only used when the caller is root.

This doesn't fix the general problem of getting metadata about
messages from terminated processes (which requires some kernel
support), but it allows "systemctl status" and similar queries to do
the Right Thing for units that log via stdout/stderr.
2012-06-22 00:14:08 +02:00

1810 lines
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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
/***
This file is part of systemd.
Copyright 2010 Lennart Poettering
systemd is free software; you can redistribute it and/or modify it
under the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 2.1 of the License, or
(at your option) any later version.
systemd is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
#include <errno.h>
#include <stdio.h>
#include <mntent.h>
#include <sys/epoll.h>
#include <signal.h>
#include "unit.h"
#include "mount.h"
#include "load-fragment.h"
#include "load-dropin.h"
#include "log.h"
#include "strv.h"
#include "mkdir.h"
#include "path-util.h"
#include "mount-setup.h"
#include "unit-name.h"
#include "dbus-mount.h"
#include "special.h"
#include "bus-errors.h"
#include "exit-status.h"
#include "def.h"
static const UnitActiveState state_translation_table[_MOUNT_STATE_MAX] = {
[MOUNT_DEAD] = UNIT_INACTIVE,
[MOUNT_MOUNTING] = UNIT_ACTIVATING,
[MOUNT_MOUNTING_DONE] = UNIT_ACTIVE,
[MOUNT_MOUNTED] = UNIT_ACTIVE,
[MOUNT_REMOUNTING] = UNIT_RELOADING,
[MOUNT_UNMOUNTING] = UNIT_DEACTIVATING,
[MOUNT_MOUNTING_SIGTERM] = UNIT_DEACTIVATING,
[MOUNT_MOUNTING_SIGKILL] = UNIT_DEACTIVATING,
[MOUNT_REMOUNTING_SIGTERM] = UNIT_RELOADING,
[MOUNT_REMOUNTING_SIGKILL] = UNIT_RELOADING,
[MOUNT_UNMOUNTING_SIGTERM] = UNIT_DEACTIVATING,
[MOUNT_UNMOUNTING_SIGKILL] = UNIT_DEACTIVATING,
[MOUNT_FAILED] = UNIT_FAILED
};
static void mount_init(Unit *u) {
Mount *m = MOUNT(u);
assert(u);
assert(u->load_state == UNIT_STUB);
m->timeout_usec = DEFAULT_TIMEOUT_USEC;
m->directory_mode = 0755;
exec_context_init(&m->exec_context);
if (unit_has_name(u, "-.mount")) {
/* Don't allow start/stop for root directory */
UNIT(m)->refuse_manual_start = true;
UNIT(m)->refuse_manual_stop = true;
} else {
/* The stdio/kmsg bridge socket is on /, in order to avoid a
* dep loop, don't use kmsg logging for -.mount */
m->exec_context.std_output = u->manager->default_std_output;
m->exec_context.std_error = u->manager->default_std_error;
}
/* We need to make sure that /bin/mount is always called in
* the same process group as us, so that the autofs kernel
* side doesn't send us another mount request while we are
* already trying to comply its last one. */
m->exec_context.same_pgrp = true;
m->timer_watch.type = WATCH_INVALID;
m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
UNIT(m)->ignore_on_isolate = true;
}
static void mount_unwatch_control_pid(Mount *m) {
assert(m);
if (m->control_pid <= 0)
return;
unit_unwatch_pid(UNIT(m), m->control_pid);
m->control_pid = 0;
}
static void mount_parameters_done(MountParameters *p) {
assert(p);
free(p->what);
free(p->options);
free(p->fstype);
p->what = p->options = p->fstype = NULL;
}
static void mount_done(Unit *u) {
Mount *m = MOUNT(u);
assert(m);
free(m->where);
m->where = NULL;
mount_parameters_done(&m->parameters_proc_self_mountinfo);
mount_parameters_done(&m->parameters_fragment);
exec_context_done(&m->exec_context);
exec_command_done_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX);
m->control_command = NULL;
mount_unwatch_control_pid(m);
unit_unwatch_timer(u, &m->timer_watch);
}
static MountParameters* get_mount_parameters_fragment(Mount *m) {
assert(m);
if (m->from_fragment)
return &m->parameters_fragment;
return NULL;
}
static MountParameters* get_mount_parameters(Mount *m) {
assert(m);
if (m->from_proc_self_mountinfo)
return &m->parameters_proc_self_mountinfo;
return get_mount_parameters_fragment(m);
}
static int mount_add_mount_links(Mount *m) {
Unit *other;
int r;
MountParameters *pm;
assert(m);
pm = get_mount_parameters_fragment(m);
/* Adds in links to other mount points that might lie below or
* above us in the hierarchy */
LIST_FOREACH(units_by_type, other, UNIT(m)->manager->units_by_type[UNIT_MOUNT]) {
Mount *n = MOUNT(other);
MountParameters *pn;
if (n == m)
continue;
if (UNIT(n)->load_state != UNIT_LOADED)
continue;
pn = get_mount_parameters_fragment(n);
if (path_startswith(m->where, n->where)) {
if ((r = unit_add_dependency(UNIT(m), UNIT_AFTER, UNIT(n), true)) < 0)
return r;
if (pn)
if ((r = unit_add_dependency(UNIT(m), UNIT_REQUIRES, UNIT(n), true)) < 0)
return r;
} else if (path_startswith(n->where, m->where)) {
if ((r = unit_add_dependency(UNIT(n), UNIT_AFTER, UNIT(m), true)) < 0)
return r;
if (pm)
if ((r = unit_add_dependency(UNIT(n), UNIT_REQUIRES, UNIT(m), true)) < 0)
return r;
} else if (pm && pm->what && path_startswith(pm->what, n->where)) {
if ((r = unit_add_dependency(UNIT(m), UNIT_AFTER, UNIT(n), true)) < 0)
return r;
if ((r = unit_add_dependency(UNIT(m), UNIT_REQUIRES, UNIT(n), true)) < 0)
return r;
} else if (pn && pn->what && path_startswith(pn->what, m->where)) {
if ((r = unit_add_dependency(UNIT(n), UNIT_AFTER, UNIT(m), true)) < 0)
return r;
if ((r = unit_add_dependency(UNIT(n), UNIT_REQUIRES, UNIT(m), true)) < 0)
return r;
}
}
return 0;
}
static int mount_add_swap_links(Mount *m) {
Unit *other;
int r;
assert(m);
LIST_FOREACH(units_by_type, other, UNIT(m)->manager->units_by_type[UNIT_SWAP])
if ((r = swap_add_one_mount_link(SWAP(other), m)) < 0)
return r;
return 0;
}
static int mount_add_path_links(Mount *m) {
Unit *other;
int r;
assert(m);
LIST_FOREACH(units_by_type, other, UNIT(m)->manager->units_by_type[UNIT_PATH])
if ((r = path_add_one_mount_link(PATH(other), m)) < 0)
return r;
return 0;
}
static int mount_add_automount_links(Mount *m) {
Unit *other;
int r;
assert(m);
LIST_FOREACH(units_by_type, other, UNIT(m)->manager->units_by_type[UNIT_AUTOMOUNT])
if ((r = automount_add_one_mount_link(AUTOMOUNT(other), m)) < 0)
return r;
return 0;
}
static int mount_add_socket_links(Mount *m) {
Unit *other;
int r;
assert(m);
LIST_FOREACH(units_by_type, other, UNIT(m)->manager->units_by_type[UNIT_SOCKET])
if ((r = socket_add_one_mount_link(SOCKET(other), m)) < 0)
return r;
return 0;
}
static int mount_add_requires_mounts_links(Mount *m) {
Unit *other;
int r;
assert(m);
LIST_FOREACH(has_requires_mounts_for, other, UNIT(m)->manager->has_requires_mounts_for) {
r = unit_add_one_mount_link(other, m);
if (r < 0)
return r;
}
return 0;
}
static char* mount_test_option(const char *haystack, const char *needle) {
struct mntent me;
assert(needle);
/* Like glibc's hasmntopt(), but works on a string, not a
* struct mntent */
if (!haystack)
return NULL;
zero(me);
me.mnt_opts = (char*) haystack;
return hasmntopt(&me, needle);
}
static bool mount_is_network(MountParameters *p) {
assert(p);
if (mount_test_option(p->options, "_netdev"))
return true;
if (p->fstype && fstype_is_network(p->fstype))
return true;
return false;
}
static bool mount_is_bind(MountParameters *p) {
assert(p);
if (mount_test_option(p->options, "bind"))
return true;
if (p->fstype && streq(p->fstype, "bind"))
return true;
return false;
}
static bool needs_quota(MountParameters *p) {
assert(p);
if (mount_is_network(p))
return false;
if (mount_is_bind(p))
return false;
return mount_test_option(p->options, "usrquota") ||
mount_test_option(p->options, "grpquota") ||
mount_test_option(p->options, "quota") ||
mount_test_option(p->options, "usrjquota") ||
mount_test_option(p->options, "grpjquota");
}
static int mount_add_device_links(Mount *m) {
MountParameters *p;
int r;
assert(m);
p = get_mount_parameters_fragment(m);
if (!p)
return 0;
if (!p->what)
return 0;
if (!mount_is_bind(p) &&
!path_equal(m->where, "/")) {
r = unit_add_node_link(UNIT(m), p->what, false);
if (r < 0)
return r;
}
if (p->passno > 0 &&
!mount_is_bind(p) &&
!path_equal(m->where, "/") &&
UNIT(m)->manager->running_as == MANAGER_SYSTEM) {
char *name;
Unit *fsck;
/* Let's add in the fsck service */
/* aka SPECIAL_FSCK_SERVICE */
name = unit_name_from_path_instance("fsck", p->what, ".service");
if (!name)
return -ENOMEM;
r = manager_load_unit_prepare(UNIT(m)->manager, name, NULL, NULL, &fsck);
if (r < 0) {
log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
free(name);
return r;
}
free(name);
SERVICE(fsck)->fsck_passno = p->passno;
r = unit_add_two_dependencies(UNIT(m), UNIT_AFTER, UNIT_REQUIRES, fsck, true);
if (r < 0)
return r;
}
return 0;
}
static int mount_add_quota_links(Mount *m) {
int r;
MountParameters *p;
assert(m);
if (UNIT(m)->manager->running_as != MANAGER_SYSTEM)
return 0;
p = get_mount_parameters_fragment(m);
if (!p)
return 0;
if (!needs_quota(p))
return 0;
r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTACHECK_SERVICE, NULL, true);
if (r < 0)
return r;
r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_WANTS, SPECIAL_QUOTAON_SERVICE, NULL, true);
if (r < 0)
return r;
return 0;
}
static int mount_add_default_dependencies(Mount *m) {
int r;
MountParameters *p;
const char *after;
assert(m);
if (UNIT(m)->manager->running_as != MANAGER_SYSTEM)
return 0;
p = get_mount_parameters_fragment(m);
if (!p)
return 0;
if (path_equal(m->where, "/"))
return 0;
if (mount_is_network(p))
after = SPECIAL_REMOTE_FS_PRE_TARGET;
else
after = SPECIAL_LOCAL_FS_PRE_TARGET;
r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_WANTS, UNIT_AFTER, after, NULL, true);
if (r < 0)
return r;
r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, NULL, true);
if (r < 0)
return r;
return 0;
}
static int mount_fix_timeouts(Mount *m) {
MountParameters *p;
const char *timeout = NULL;
Unit *other;
Iterator i;
usec_t u;
char *t;
int r;
assert(m);
p = get_mount_parameters_fragment(m);
if (!p)
return 0;
/* Allow configuration how long we wait for a device that
* backs a mount point to show up. This is useful to support
* endless device timeouts for devices that show up only after
* user input, like crypto devices. */
if ((timeout = mount_test_option(p->options, "comment=systemd.device-timeout")))
timeout += 31;
else if ((timeout = mount_test_option(p->options, "x-systemd.device-timeout")))
timeout += 25;
else
return 0;
t = strndup(timeout, strcspn(timeout, ",;" WHITESPACE));
if (!t)
return -ENOMEM;
r = parse_usec(t, &u);
free(t);
if (r < 0) {
log_warning("Failed to parse timeout for %s, ignoring: %s", m->where, timeout);
return r;
}
SET_FOREACH(other, UNIT(m)->dependencies[UNIT_AFTER], i) {
if (other->type != UNIT_DEVICE)
continue;
other->job_timeout = u;
}
return 0;
}
static int mount_verify(Mount *m) {
bool b;
char *e;
assert(m);
if (UNIT(m)->load_state != UNIT_LOADED)
return 0;
if (!m->from_fragment && !m->from_proc_self_mountinfo)
return -ENOENT;
if (!(e = unit_name_from_path(m->where, ".mount")))
return -ENOMEM;
b = unit_has_name(UNIT(m), e);
free(e);
if (!b) {
log_error("%s's Where setting doesn't match unit name. Refusing.", UNIT(m)->id);
return -EINVAL;
}
if (mount_point_is_api(m->where) || mount_point_ignore(m->where)) {
log_error("Cannot create mount unit for API file system %s. Refusing.", m->where);
return -EINVAL;
}
if (UNIT(m)->fragment_path && !m->parameters_fragment.what) {
log_error("%s's What setting is missing. Refusing.", UNIT(m)->id);
return -EBADMSG;
}
if (m->exec_context.pam_name && m->exec_context.kill_mode != KILL_CONTROL_GROUP) {
log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", UNIT(m)->id);
return -EINVAL;
}
return 0;
}
static int mount_load(Unit *u) {
Mount *m = MOUNT(u);
int r;
assert(u);
assert(u->load_state == UNIT_STUB);
if ((r = unit_load_fragment_and_dropin_optional(u)) < 0)
return r;
/* This is a new unit? Then let's add in some extras */
if (u->load_state == UNIT_LOADED) {
if ((r = unit_add_exec_dependencies(u, &m->exec_context)) < 0)
return r;
if (UNIT(m)->fragment_path)
m->from_fragment = true;
if (!m->where)
if (!(m->where = unit_name_to_path(u->id)))
return -ENOMEM;
path_kill_slashes(m->where);
if (!UNIT(m)->description)
if ((r = unit_set_description(u, m->where)) < 0)
return r;
if ((r = mount_add_device_links(m)) < 0)
return r;
if ((r = mount_add_mount_links(m)) < 0)
return r;
if ((r = mount_add_socket_links(m)) < 0)
return r;
if ((r = mount_add_swap_links(m)) < 0)
return r;
if ((r = mount_add_path_links(m)) < 0)
return r;
r = mount_add_requires_mounts_links(m);
if (r < 0)
return r;
if ((r = mount_add_automount_links(m)) < 0)
return r;
r = mount_add_quota_links(m);
if (r < 0)
return r;
if (UNIT(m)->default_dependencies)
if ((r = mount_add_default_dependencies(m)) < 0)
return r;
if ((r = unit_add_default_cgroups(u)) < 0)
return r;
mount_fix_timeouts(m);
}
return mount_verify(m);
}
static int mount_notify_automount(Mount *m, int status) {
Unit *p;
int r;
Iterator i;
assert(m);
SET_FOREACH(p, UNIT(m)->dependencies[UNIT_TRIGGERED_BY], i)
if (p->type == UNIT_AUTOMOUNT) {
r = automount_send_ready(AUTOMOUNT(p), status);
if (r < 0)
return r;
}
return 0;
}
static void mount_set_state(Mount *m, MountState state) {
MountState old_state;
assert(m);
old_state = m->state;
m->state = state;
if (state != MOUNT_MOUNTING &&
state != MOUNT_MOUNTING_DONE &&
state != MOUNT_REMOUNTING &&
state != MOUNT_UNMOUNTING &&
state != MOUNT_MOUNTING_SIGTERM &&
state != MOUNT_MOUNTING_SIGKILL &&
state != MOUNT_UNMOUNTING_SIGTERM &&
state != MOUNT_UNMOUNTING_SIGKILL &&
state != MOUNT_REMOUNTING_SIGTERM &&
state != MOUNT_REMOUNTING_SIGKILL) {
unit_unwatch_timer(UNIT(m), &m->timer_watch);
mount_unwatch_control_pid(m);
m->control_command = NULL;
m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
}
if (state == MOUNT_MOUNTED ||
state == MOUNT_REMOUNTING)
mount_notify_automount(m, 0);
else if (state == MOUNT_DEAD ||
state == MOUNT_UNMOUNTING ||
state == MOUNT_MOUNTING_SIGTERM ||
state == MOUNT_MOUNTING_SIGKILL ||
state == MOUNT_REMOUNTING_SIGTERM ||
state == MOUNT_REMOUNTING_SIGKILL ||
state == MOUNT_UNMOUNTING_SIGTERM ||
state == MOUNT_UNMOUNTING_SIGKILL ||
state == MOUNT_FAILED)
mount_notify_automount(m, -ENODEV);
if (state != old_state)
log_debug("%s changed %s -> %s",
UNIT(m)->id,
mount_state_to_string(old_state),
mount_state_to_string(state));
unit_notify(UNIT(m), state_translation_table[old_state], state_translation_table[state], m->reload_result == MOUNT_SUCCESS);
m->reload_result = MOUNT_SUCCESS;
}
static int mount_coldplug(Unit *u) {
Mount *m = MOUNT(u);
MountState new_state = MOUNT_DEAD;
int r;
assert(m);
assert(m->state == MOUNT_DEAD);
if (m->deserialized_state != m->state)
new_state = m->deserialized_state;
else if (m->from_proc_self_mountinfo)
new_state = MOUNT_MOUNTED;
if (new_state != m->state) {
if (new_state == MOUNT_MOUNTING ||
new_state == MOUNT_MOUNTING_DONE ||
new_state == MOUNT_REMOUNTING ||
new_state == MOUNT_UNMOUNTING ||
new_state == MOUNT_MOUNTING_SIGTERM ||
new_state == MOUNT_MOUNTING_SIGKILL ||
new_state == MOUNT_UNMOUNTING_SIGTERM ||
new_state == MOUNT_UNMOUNTING_SIGKILL ||
new_state == MOUNT_REMOUNTING_SIGTERM ||
new_state == MOUNT_REMOUNTING_SIGKILL) {
if (m->control_pid <= 0)
return -EBADMSG;
if ((r = unit_watch_pid(UNIT(m), m->control_pid)) < 0)
return r;
if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
return r;
}
mount_set_state(m, new_state);
}
return 0;
}
static void mount_dump(Unit *u, FILE *f, const char *prefix) {
Mount *m = MOUNT(u);
MountParameters *p;
assert(m);
assert(f);
p = get_mount_parameters(m);
fprintf(f,
"%sMount State: %s\n"
"%sResult: %s\n"
"%sWhere: %s\n"
"%sWhat: %s\n"
"%sFile System Type: %s\n"
"%sOptions: %s\n"
"%sFrom /proc/self/mountinfo: %s\n"
"%sFrom fragment: %s\n"
"%sDirectoryMode: %04o\n",
prefix, mount_state_to_string(m->state),
prefix, mount_result_to_string(m->result),
prefix, m->where,
prefix, strna(p->what),
prefix, strna(p->fstype),
prefix, strna(p->options),
prefix, yes_no(m->from_proc_self_mountinfo),
prefix, yes_no(m->from_fragment),
prefix, m->directory_mode);
if (m->control_pid > 0)
fprintf(f,
"%sControl PID: %lu\n",
prefix, (unsigned long) m->control_pid);
exec_context_dump(&m->exec_context, f, prefix);
}
static int mount_spawn(Mount *m, ExecCommand *c, pid_t *_pid) {
pid_t pid;
int r;
assert(m);
assert(c);
assert(_pid);
if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
goto fail;
if ((r = exec_spawn(c,
NULL,
&m->exec_context,
NULL, 0,
UNIT(m)->manager->environment,
true,
true,
true,
UNIT(m)->manager->confirm_spawn,
UNIT(m)->cgroup_bondings,
UNIT(m)->cgroup_attributes,
NULL,
UNIT(m)->id,
NULL,
&pid)) < 0)
goto fail;
if ((r = unit_watch_pid(UNIT(m), pid)) < 0)
/* FIXME: we need to do something here */
goto fail;
*_pid = pid;
return 0;
fail:
unit_unwatch_timer(UNIT(m), &m->timer_watch);
return r;
}
static void mount_enter_dead(Mount *m, MountResult f) {
assert(m);
if (f != MOUNT_SUCCESS)
m->result = f;
mount_set_state(m, m->result != MOUNT_SUCCESS ? MOUNT_FAILED : MOUNT_DEAD);
}
static void mount_enter_mounted(Mount *m, MountResult f) {
assert(m);
if (f != MOUNT_SUCCESS)
m->result = f;
mount_set_state(m, MOUNT_MOUNTED);
}
static void mount_enter_signal(Mount *m, MountState state, MountResult f) {
int r;
Set *pid_set = NULL;
bool wait_for_exit = false;
assert(m);
if (f != MOUNT_SUCCESS)
m->result = f;
if (m->exec_context.kill_mode != KILL_NONE) {
int sig = (state == MOUNT_MOUNTING_SIGTERM ||
state == MOUNT_UNMOUNTING_SIGTERM ||
state == MOUNT_REMOUNTING_SIGTERM) ? m->exec_context.kill_signal : SIGKILL;
if (m->control_pid > 0) {
if (kill_and_sigcont(m->control_pid, sig) < 0 && errno != ESRCH)
log_warning("Failed to kill control process %li: %m", (long) m->control_pid);
else
wait_for_exit = true;
}
if (m->exec_context.kill_mode == KILL_CONTROL_GROUP) {
if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) {
r = -ENOMEM;
goto fail;
}
/* Exclude the control pid from being killed via the cgroup */
if (m->control_pid > 0)
if ((r = set_put(pid_set, LONG_TO_PTR(m->control_pid))) < 0)
goto fail;
r = cgroup_bonding_kill_list(UNIT(m)->cgroup_bondings, sig, true, false, pid_set, NULL);
if (r < 0) {
if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
log_warning("Failed to kill control group: %s", strerror(-r));
} else if (r > 0)
wait_for_exit = true;
set_free(pid_set);
pid_set = NULL;
}
}
if (wait_for_exit) {
if ((r = unit_watch_timer(UNIT(m), m->timeout_usec, &m->timer_watch)) < 0)
goto fail;
mount_set_state(m, state);
} else if (state == MOUNT_REMOUNTING_SIGTERM || state == MOUNT_REMOUNTING_SIGKILL)
mount_enter_mounted(m, MOUNT_SUCCESS);
else
mount_enter_dead(m, MOUNT_SUCCESS);
return;
fail:
log_warning("%s failed to kill processes: %s", UNIT(m)->id, strerror(-r));
if (state == MOUNT_REMOUNTING_SIGTERM || state == MOUNT_REMOUNTING_SIGKILL)
mount_enter_mounted(m, MOUNT_FAILURE_RESOURCES);
else
mount_enter_dead(m, MOUNT_FAILURE_RESOURCES);
if (pid_set)
set_free(pid_set);
}
static void mount_enter_unmounting(Mount *m) {
int r;
assert(m);
m->control_command_id = MOUNT_EXEC_UNMOUNT;
m->control_command = m->exec_command + MOUNT_EXEC_UNMOUNT;
if ((r = exec_command_set(
m->control_command,
"/bin/umount",
m->where,
NULL)) < 0)
goto fail;
mount_unwatch_control_pid(m);
if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
goto fail;
mount_set_state(m, MOUNT_UNMOUNTING);
return;
fail:
log_warning("%s failed to run 'umount' task: %s", UNIT(m)->id, strerror(-r));
mount_enter_mounted(m, MOUNT_FAILURE_RESOURCES);
}
static void mount_enter_mounting(Mount *m) {
int r;
MountParameters *p;
assert(m);
m->control_command_id = MOUNT_EXEC_MOUNT;
m->control_command = m->exec_command + MOUNT_EXEC_MOUNT;
mkdir_p_label(m->where, m->directory_mode);
/* Create the source directory for bind-mounts if needed */
p = get_mount_parameters_fragment(m);
if (p && mount_is_bind(p))
mkdir_p_label(p->what, m->directory_mode);
if (m->from_fragment)
r = exec_command_set(
m->control_command,
"/bin/mount",
m->parameters_fragment.what,
m->where,
"-t", m->parameters_fragment.fstype ? m->parameters_fragment.fstype : "auto",
m->parameters_fragment.options ? "-o" : NULL, m->parameters_fragment.options,
NULL);
else
r = -ENOENT;
if (r < 0)
goto fail;
mount_unwatch_control_pid(m);
if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
goto fail;
mount_set_state(m, MOUNT_MOUNTING);
return;
fail:
log_warning("%s failed to run 'mount' task: %s", UNIT(m)->id, strerror(-r));
mount_enter_dead(m, MOUNT_FAILURE_RESOURCES);
}
static void mount_enter_mounting_done(Mount *m) {
assert(m);
mount_set_state(m, MOUNT_MOUNTING_DONE);
}
static void mount_enter_remounting(Mount *m) {
int r;
assert(m);
m->control_command_id = MOUNT_EXEC_REMOUNT;
m->control_command = m->exec_command + MOUNT_EXEC_REMOUNT;
if (m->from_fragment) {
char *buf = NULL;
const char *o;
if (m->parameters_fragment.options) {
if (!(buf = strappend("remount,", m->parameters_fragment.options))) {
r = -ENOMEM;
goto fail;
}
o = buf;
} else
o = "remount";
r = exec_command_set(
m->control_command,
"/bin/mount",
m->parameters_fragment.what,
m->where,
"-t", m->parameters_fragment.fstype ? m->parameters_fragment.fstype : "auto",
"-o", o,
NULL);
free(buf);
} else
r = -ENOENT;
if (r < 0)
goto fail;
mount_unwatch_control_pid(m);
if ((r = mount_spawn(m, m->control_command, &m->control_pid)) < 0)
goto fail;
mount_set_state(m, MOUNT_REMOUNTING);
return;
fail:
log_warning("%s failed to run 'remount' task: %s", UNIT(m)->id, strerror(-r));
m->reload_result = MOUNT_FAILURE_RESOURCES;
mount_enter_mounted(m, MOUNT_SUCCESS);
}
static int mount_start(Unit *u) {
Mount *m = MOUNT(u);
assert(m);
/* We cannot fulfill this request right now, try again later
* please! */
if (m->state == MOUNT_UNMOUNTING ||
m->state == MOUNT_UNMOUNTING_SIGTERM ||
m->state == MOUNT_UNMOUNTING_SIGKILL ||
m->state == MOUNT_MOUNTING_SIGTERM ||
m->state == MOUNT_MOUNTING_SIGKILL)
return -EAGAIN;
/* Already on it! */
if (m->state == MOUNT_MOUNTING)
return 0;
assert(m->state == MOUNT_DEAD || m->state == MOUNT_FAILED);
m->result = MOUNT_SUCCESS;
m->reload_result = MOUNT_SUCCESS;
mount_enter_mounting(m);
return 0;
}
static int mount_stop(Unit *u) {
Mount *m = MOUNT(u);
assert(m);
/* Already on it */
if (m->state == MOUNT_UNMOUNTING ||
m->state == MOUNT_UNMOUNTING_SIGKILL ||
m->state == MOUNT_UNMOUNTING_SIGTERM ||
m->state == MOUNT_MOUNTING_SIGTERM ||
m->state == MOUNT_MOUNTING_SIGKILL)
return 0;
assert(m->state == MOUNT_MOUNTING ||
m->state == MOUNT_MOUNTING_DONE ||
m->state == MOUNT_MOUNTED ||
m->state == MOUNT_REMOUNTING ||
m->state == MOUNT_REMOUNTING_SIGTERM ||
m->state == MOUNT_REMOUNTING_SIGKILL);
mount_enter_unmounting(m);
return 0;
}
static int mount_reload(Unit *u) {
Mount *m = MOUNT(u);
assert(m);
if (m->state == MOUNT_MOUNTING_DONE)
return -EAGAIN;
assert(m->state == MOUNT_MOUNTED);
mount_enter_remounting(m);
return 0;
}
static int mount_serialize(Unit *u, FILE *f, FDSet *fds) {
Mount *m = MOUNT(u);
assert(m);
assert(f);
assert(fds);
unit_serialize_item(u, f, "state", mount_state_to_string(m->state));
unit_serialize_item(u, f, "result", mount_result_to_string(m->result));
unit_serialize_item(u, f, "reload-result", mount_result_to_string(m->reload_result));
if (m->control_pid > 0)
unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) m->control_pid);
if (m->control_command_id >= 0)
unit_serialize_item(u, f, "control-command", mount_exec_command_to_string(m->control_command_id));
return 0;
}
static int mount_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
Mount *m = MOUNT(u);
assert(u);
assert(key);
assert(value);
assert(fds);
if (streq(key, "state")) {
MountState state;
if ((state = mount_state_from_string(value)) < 0)
log_debug("Failed to parse state value %s", value);
else
m->deserialized_state = state;
} else if (streq(key, "result")) {
MountResult f;
f = mount_result_from_string(value);
if (f < 0)
log_debug("Failed to parse result value %s", value);
else if (f != MOUNT_SUCCESS)
m->result = f;
} else if (streq(key, "reload-result")) {
MountResult f;
f = mount_result_from_string(value);
if (f < 0)
log_debug("Failed to parse reload result value %s", value);
else if (f != MOUNT_SUCCESS)
m->reload_result = f;
} else if (streq(key, "control-pid")) {
pid_t pid;
if (parse_pid(value, &pid) < 0)
log_debug("Failed to parse control-pid value %s", value);
else
m->control_pid = pid;
} else if (streq(key, "control-command")) {
MountExecCommand id;
if ((id = mount_exec_command_from_string(value)) < 0)
log_debug("Failed to parse exec-command value %s", value);
else {
m->control_command_id = id;
m->control_command = m->exec_command + id;
}
} else
log_debug("Unknown serialization key '%s'", key);
return 0;
}
static UnitActiveState mount_active_state(Unit *u) {
assert(u);
return state_translation_table[MOUNT(u)->state];
}
static const char *mount_sub_state_to_string(Unit *u) {
assert(u);
return mount_state_to_string(MOUNT(u)->state);
}
static bool mount_check_gc(Unit *u) {
Mount *m = MOUNT(u);
assert(m);
return m->from_proc_self_mountinfo;
}
static void mount_sigchld_event(Unit *u, pid_t pid, int code, int status) {
Mount *m = MOUNT(u);
MountResult f;
assert(m);
assert(pid >= 0);
if (pid != m->control_pid)
return;
m->control_pid = 0;
if (is_clean_exit(code, status))
f = MOUNT_SUCCESS;
else if (code == CLD_EXITED)
f = MOUNT_FAILURE_EXIT_CODE;
else if (code == CLD_KILLED)
f = MOUNT_FAILURE_SIGNAL;
else if (code == CLD_DUMPED)
f = MOUNT_FAILURE_CORE_DUMP;
else
assert_not_reached("Unknown code");
if (f != MOUNT_SUCCESS)
m->result = f;
if (m->control_command) {
exec_status_exit(&m->control_command->exec_status, &m->exec_context, pid, code, status);
m->control_command = NULL;
m->control_command_id = _MOUNT_EXEC_COMMAND_INVALID;
}
log_full(f == MOUNT_SUCCESS ? LOG_DEBUG : LOG_NOTICE,
"%s mount process exited, code=%s status=%i", u->id, sigchld_code_to_string(code), status);
/* Note that mount(8) returning and the kernel sending us a
* mount table change event might happen out-of-order. If an
* operation succeed we assume the kernel will follow soon too
* and already change into the resulting state. If it fails
* we check if the kernel still knows about the mount. and
* change state accordingly. */
switch (m->state) {
case MOUNT_MOUNTING:
case MOUNT_MOUNTING_DONE:
case MOUNT_MOUNTING_SIGKILL:
case MOUNT_MOUNTING_SIGTERM:
if (f == MOUNT_SUCCESS)
mount_enter_mounted(m, f);
else if (m->from_proc_self_mountinfo)
mount_enter_mounted(m, f);
else
mount_enter_dead(m, f);
break;
case MOUNT_REMOUNTING:
case MOUNT_REMOUNTING_SIGKILL:
case MOUNT_REMOUNTING_SIGTERM:
m->reload_result = f;
if (m->from_proc_self_mountinfo)
mount_enter_mounted(m, MOUNT_SUCCESS);
else
mount_enter_dead(m, MOUNT_SUCCESS);
break;
case MOUNT_UNMOUNTING:
case MOUNT_UNMOUNTING_SIGKILL:
case MOUNT_UNMOUNTING_SIGTERM:
if (f == MOUNT_SUCCESS)
mount_enter_dead(m, f);
else if (m->from_proc_self_mountinfo)
mount_enter_mounted(m, f);
else
mount_enter_dead(m, f);
break;
default:
assert_not_reached("Uh, control process died at wrong time.");
}
/* Notify clients about changed exit status */
unit_add_to_dbus_queue(u);
}
static void mount_timer_event(Unit *u, uint64_t elapsed, Watch *w) {
Mount *m = MOUNT(u);
assert(m);
assert(elapsed == 1);
assert(w == &m->timer_watch);
switch (m->state) {
case MOUNT_MOUNTING:
case MOUNT_MOUNTING_DONE:
log_warning("%s mounting timed out. Stopping.", u->id);
mount_enter_signal(m, MOUNT_MOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT);
break;
case MOUNT_REMOUNTING:
log_warning("%s remounting timed out. Stopping.", u->id);
m->reload_result = MOUNT_FAILURE_TIMEOUT;
mount_enter_mounted(m, MOUNT_SUCCESS);
break;
case MOUNT_UNMOUNTING:
log_warning("%s unmounting timed out. Stopping.", u->id);
mount_enter_signal(m, MOUNT_UNMOUNTING_SIGTERM, MOUNT_FAILURE_TIMEOUT);
break;
case MOUNT_MOUNTING_SIGTERM:
if (m->exec_context.send_sigkill) {
log_warning("%s mounting timed out. Killing.", u->id);
mount_enter_signal(m, MOUNT_MOUNTING_SIGKILL, MOUNT_FAILURE_TIMEOUT);
} else {
log_warning("%s mounting timed out. Skipping SIGKILL. Ignoring.", u->id);
if (m->from_proc_self_mountinfo)
mount_enter_mounted(m, MOUNT_FAILURE_TIMEOUT);
else
mount_enter_dead(m, MOUNT_FAILURE_TIMEOUT);
}
break;
case MOUNT_REMOUNTING_SIGTERM:
if (m->exec_context.send_sigkill) {
log_warning("%s remounting timed out. Killing.", u->id);
mount_enter_signal(m, MOUNT_REMOUNTING_SIGKILL, MOUNT_FAILURE_TIMEOUT);
} else {
log_warning("%s remounting timed out. Skipping SIGKILL. Ignoring.", u->id);
if (m->from_proc_self_mountinfo)
mount_enter_mounted(m, MOUNT_FAILURE_TIMEOUT);
else
mount_enter_dead(m, MOUNT_FAILURE_TIMEOUT);
}
break;
case MOUNT_UNMOUNTING_SIGTERM:
if (m->exec_context.send_sigkill) {
log_warning("%s unmounting timed out. Killing.", u->id);
mount_enter_signal(m, MOUNT_UNMOUNTING_SIGKILL, MOUNT_FAILURE_TIMEOUT);
} else {
log_warning("%s unmounting timed out. Skipping SIGKILL. Ignoring.", u->id);
if (m->from_proc_self_mountinfo)
mount_enter_mounted(m, MOUNT_FAILURE_TIMEOUT);
else
mount_enter_dead(m, MOUNT_FAILURE_TIMEOUT);
}
break;
case MOUNT_MOUNTING_SIGKILL:
case MOUNT_REMOUNTING_SIGKILL:
case MOUNT_UNMOUNTING_SIGKILL:
log_warning("%s mount process still around after SIGKILL. Ignoring.", u->id);
if (m->from_proc_self_mountinfo)
mount_enter_mounted(m, MOUNT_FAILURE_TIMEOUT);
else
mount_enter_dead(m, MOUNT_FAILURE_TIMEOUT);
break;
default:
assert_not_reached("Timeout at wrong time.");
}
}
static int mount_add_one(
Manager *m,
const char *what,
const char *where,
const char *options,
const char *fstype,
int passno,
bool set_flags) {
int r;
Unit *u;
bool delete;
char *e, *w = NULL, *o = NULL, *f = NULL;
MountParameters *p;
assert(m);
assert(what);
assert(where);
assert(options);
assert(fstype);
/* Ignore API mount points. They should never be referenced in
* dependencies ever. */
if (mount_point_is_api(where) || mount_point_ignore(where))
return 0;
if (streq(fstype, "autofs"))
return 0;
/* probably some kind of swap, ignore */
if (!is_path(where))
return 0;
e = unit_name_from_path(where, ".mount");
if (!e)
return -ENOMEM;
u = manager_get_unit(m, e);
if (!u) {
delete = true;
u = unit_new(m, sizeof(Mount));
if (!u) {
free(e);
return -ENOMEM;
}
r = unit_add_name(u, e);
free(e);
if (r < 0)
goto fail;
MOUNT(u)->where = strdup(where);
if (!MOUNT(u)->where) {
r = -ENOMEM;
goto fail;
}
unit_add_to_load_queue(u);
} else {
delete = false;
free(e);
}
if (!(w = strdup(what)) ||
!(o = strdup(options)) ||
!(f = strdup(fstype))) {
r = -ENOMEM;
goto fail;
}
p = &MOUNT(u)->parameters_proc_self_mountinfo;
if (set_flags) {
MOUNT(u)->is_mounted = true;
MOUNT(u)->just_mounted = !MOUNT(u)->from_proc_self_mountinfo;
MOUNT(u)->just_changed = !streq_ptr(p->options, o);
}
MOUNT(u)->from_proc_self_mountinfo = true;
free(p->what);
p->what = w;
free(p->options);
p->options = o;
free(p->fstype);
p->fstype = f;
p->passno = passno;
unit_add_to_dbus_queue(u);
return 0;
fail:
free(w);
free(o);
free(f);
if (delete && u)
unit_free(u);
return r;
}
static int mount_load_proc_self_mountinfo(Manager *m, bool set_flags) {
int r = 0;
unsigned i;
char *device, *path, *options, *options2, *fstype, *d, *p, *o;
assert(m);
rewind(m->proc_self_mountinfo);
for (i = 1;; i++) {
int k;
device = path = options = options2 = fstype = d = p = o = NULL;
if ((k = fscanf(m->proc_self_mountinfo,
"%*s " /* (1) mount id */
"%*s " /* (2) parent id */
"%*s " /* (3) major:minor */
"%*s " /* (4) root */
"%ms " /* (5) mount point */
"%ms" /* (6) mount options */
"%*[^-]" /* (7) optional fields */
"- " /* (8) separator */
"%ms " /* (9) file system type */
"%ms" /* (10) mount source */
"%ms" /* (11) mount options 2 */
"%*[^\n]", /* some rubbish at the end */
&path,
&options,
&fstype,
&device,
&options2)) != 5) {
if (k == EOF)
break;
log_warning("Failed to parse /proc/self/mountinfo:%u.", i);
goto clean_up;
}
o = join(options, ",", options2, NULL);
if (!o) {
r = -ENOMEM;
goto finish;
}
if (!(d = cunescape(device)) ||
!(p = cunescape(path))) {
r = -ENOMEM;
goto finish;
}
if ((k = mount_add_one(m, d, p, o, fstype, 0, set_flags)) < 0)
r = k;
clean_up:
free(device);
free(path);
free(options);
free(options2);
free(fstype);
free(d);
free(p);
free(o);
}
finish:
free(device);
free(path);
free(options);
free(options2);
free(fstype);
free(d);
free(p);
free(o);
return r;
}
static void mount_shutdown(Manager *m) {
assert(m);
if (m->proc_self_mountinfo) {
fclose(m->proc_self_mountinfo);
m->proc_self_mountinfo = NULL;
}
}
static int mount_enumerate(Manager *m) {
int r;
struct epoll_event ev;
assert(m);
if (!m->proc_self_mountinfo) {
if (!(m->proc_self_mountinfo = fopen("/proc/self/mountinfo", "re")))
return -errno;
m->mount_watch.type = WATCH_MOUNT;
m->mount_watch.fd = fileno(m->proc_self_mountinfo);
zero(ev);
ev.events = EPOLLPRI;
ev.data.ptr = &m->mount_watch;
if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->mount_watch.fd, &ev) < 0)
return -errno;
}
if ((r = mount_load_proc_self_mountinfo(m, false)) < 0)
goto fail;
return 0;
fail:
mount_shutdown(m);
return r;
}
void mount_fd_event(Manager *m, int events) {
Unit *u;
int r;
assert(m);
assert(events & EPOLLPRI);
/* The manager calls this for every fd event happening on the
* /proc/self/mountinfo file, which informs us about mounting
* table changes */
if ((r = mount_load_proc_self_mountinfo(m, true)) < 0) {
log_error("Failed to reread /proc/self/mountinfo: %s", strerror(-r));
/* Reset flags, just in case, for later calls */
LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) {
Mount *mount = MOUNT(u);
mount->is_mounted = mount->just_mounted = mount->just_changed = false;
}
return;
}
manager_dispatch_load_queue(m);
LIST_FOREACH(units_by_type, u, m->units_by_type[UNIT_MOUNT]) {
Mount *mount = MOUNT(u);
if (!mount->is_mounted) {
/* This has just been unmounted. */
mount->from_proc_self_mountinfo = false;
switch (mount->state) {
case MOUNT_MOUNTED:
mount_enter_dead(mount, MOUNT_SUCCESS);
break;
default:
mount_set_state(mount, mount->state);
break;
}
} else if (mount->just_mounted || mount->just_changed) {
/* New or changed mount entry */
switch (mount->state) {
case MOUNT_DEAD:
case MOUNT_FAILED:
mount_enter_mounted(mount, MOUNT_SUCCESS);
break;
case MOUNT_MOUNTING:
mount_enter_mounting_done(mount);
break;
default:
/* Nothing really changed, but let's
* issue an notification call
* nonetheless, in case somebody is
* waiting for this. (e.g. file system
* ro/rw remounts.) */
mount_set_state(mount, mount->state);
break;
}
}
/* Reset the flags for later calls */
mount->is_mounted = mount->just_mounted = mount->just_changed = false;
}
}
static void mount_reset_failed(Unit *u) {
Mount *m = MOUNT(u);
assert(m);
if (m->state == MOUNT_FAILED)
mount_set_state(m, MOUNT_DEAD);
m->result = MOUNT_SUCCESS;
m->reload_result = MOUNT_SUCCESS;
}
static int mount_kill(Unit *u, KillWho who, KillMode mode, int signo, DBusError *error) {
Mount *m = MOUNT(u);
int r = 0;
Set *pid_set = NULL;
assert(m);
if (who == KILL_MAIN) {
dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "Mount units have no main processes");
return -ESRCH;
}
if (m->control_pid <= 0 && who == KILL_CONTROL) {
dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill");
return -ESRCH;
}
if (who == KILL_CONTROL || who == KILL_ALL)
if (m->control_pid > 0)
if (kill(m->control_pid, signo) < 0)
r = -errno;
if (who == KILL_ALL && mode == KILL_CONTROL_GROUP) {
int q;
if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func)))
return -ENOMEM;
/* Exclude the control pid from being killed via the cgroup */
if (m->control_pid > 0)
if ((q = set_put(pid_set, LONG_TO_PTR(m->control_pid))) < 0) {
r = q;
goto finish;
}
q = cgroup_bonding_kill_list(UNIT(m)->cgroup_bondings, signo, false, false, pid_set, NULL);
if (q < 0)
if (q != -EAGAIN && q != -ESRCH && q != -ENOENT)
r = q;
}
finish:
if (pid_set)
set_free(pid_set);
return r;
}
static const char* const mount_state_table[_MOUNT_STATE_MAX] = {
[MOUNT_DEAD] = "dead",
[MOUNT_MOUNTING] = "mounting",
[MOUNT_MOUNTING_DONE] = "mounting-done",
[MOUNT_MOUNTED] = "mounted",
[MOUNT_REMOUNTING] = "remounting",
[MOUNT_UNMOUNTING] = "unmounting",
[MOUNT_MOUNTING_SIGTERM] = "mounting-sigterm",
[MOUNT_MOUNTING_SIGKILL] = "mounting-sigkill",
[MOUNT_REMOUNTING_SIGTERM] = "remounting-sigterm",
[MOUNT_REMOUNTING_SIGKILL] = "remounting-sigkill",
[MOUNT_UNMOUNTING_SIGTERM] = "unmounting-sigterm",
[MOUNT_UNMOUNTING_SIGKILL] = "unmounting-sigkill",
[MOUNT_FAILED] = "failed"
};
DEFINE_STRING_TABLE_LOOKUP(mount_state, MountState);
static const char* const mount_exec_command_table[_MOUNT_EXEC_COMMAND_MAX] = {
[MOUNT_EXEC_MOUNT] = "ExecMount",
[MOUNT_EXEC_UNMOUNT] = "ExecUnmount",
[MOUNT_EXEC_REMOUNT] = "ExecRemount",
};
DEFINE_STRING_TABLE_LOOKUP(mount_exec_command, MountExecCommand);
static const char* const mount_result_table[_MOUNT_RESULT_MAX] = {
[MOUNT_SUCCESS] = "success",
[MOUNT_FAILURE_RESOURCES] = "resources",
[MOUNT_FAILURE_TIMEOUT] = "timeout",
[MOUNT_FAILURE_EXIT_CODE] = "exit-code",
[MOUNT_FAILURE_SIGNAL] = "signal",
[MOUNT_FAILURE_CORE_DUMP] = "core-dump"
};
DEFINE_STRING_TABLE_LOOKUP(mount_result, MountResult);
const UnitVTable mount_vtable = {
.suffix = ".mount",
.object_size = sizeof(Mount),
.sections =
"Unit\0"
"Mount\0"
"Install\0",
.no_alias = true,
.no_instances = true,
.init = mount_init,
.load = mount_load,
.done = mount_done,
.coldplug = mount_coldplug,
.dump = mount_dump,
.start = mount_start,
.stop = mount_stop,
.reload = mount_reload,
.kill = mount_kill,
.serialize = mount_serialize,
.deserialize_item = mount_deserialize_item,
.active_state = mount_active_state,
.sub_state_to_string = mount_sub_state_to_string,
.check_gc = mount_check_gc,
.sigchld_event = mount_sigchld_event,
.timer_event = mount_timer_event,
.reset_failed = mount_reset_failed,
.bus_interface = "org.freedesktop.systemd1.Mount",
.bus_message_handler = bus_mount_message_handler,
.bus_invalidating_properties = bus_mount_invalidating_properties,
.enumerate = mount_enumerate,
.shutdown = mount_shutdown,
.status_message_formats = {
.starting_stopping = {
[0] = "Mounting %s...",
[1] = "Unmounting %s...",
},
.finished_start_job = {
[JOB_DONE] = "Mounted %s.",
[JOB_FAILED] = "Failed to mount %s.",
[JOB_DEPENDENCY] = "Dependency failed for %s.",
[JOB_TIMEOUT] = "Timed out mounting %s.",
},
.finished_stop_job = {
[JOB_DONE] = "Unmounted %s.",
[JOB_FAILED] = "Failed unmounting %s.",
[JOB_TIMEOUT] = "Timed out unmounting %s.",
},
},
};
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