diff options
Diffstat (limited to 'src/core/mount.c')
| -rw-r--r-- | src/core/mount.c | 1885 |
1 files changed, 0 insertions, 1885 deletions
diff --git a/src/core/mount.c b/src/core/mount.c deleted file mode 100644 index 14f4863dc6..0000000000 --- a/src/core/mount.c +++ /dev/null @@ -1,1885 +0,0 @@ -/*-*- 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; - } - - kill_context_init(&m->kill_context); - - /* 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)) - return 0; - - if (!is_device_path(p->what)) - return 0; - - if (path_equal(m->where, "/")) - return 0; - - r = unit_add_node_link(UNIT(m), p->what, false); - if (r < 0) - return r; - - if (p->passno > 0 && - UNIT(m)->manager->running_as == SYSTEMD_SYSTEM) { - char *name; - Unit *fsck; - /* Let's add in the fsck service */ - - /* aka SPECIAL_FSCK_SERVICE */ - name = unit_name_from_path_instance("systemd-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 != SYSTEMD_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 != SYSTEMD_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->kill_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_add_extras(Mount *m) { - Unit *u = UNIT(m); - int r; - - if (UNIT(m)->fragment_path) - m->from_fragment = true; - - if (!m->where) { - m->where = unit_name_to_path(u->id); - if (!m->where) - return -ENOMEM; - } - - path_kill_slashes(m->where); - - r = unit_add_exec_dependencies(u, &m->exec_context); - if (r < 0) - return r; - - if (!UNIT(m)->description) { - r = unit_set_description(u, m->where); - if (r < 0) - return r; - } - - r = mount_add_device_links(m); - if (r < 0) - return r; - - r = mount_add_mount_links(m); - if (r < 0) - return r; - - r = mount_add_socket_links(m); - if (r < 0) - return r; - - r = mount_add_swap_links(m); - if (r < 0) - return r; - - r = mount_add_path_links(m); - if (r < 0) - return r; - - r = mount_add_requires_mounts_links(m); - if (r < 0) - return r; - - r = mount_add_automount_links(m); - if (r < 0) - return r; - - r = mount_add_quota_links(m); - if (r < 0) - return r; - - if (UNIT(m)->default_dependencies) { - r = mount_add_default_dependencies(m); - if (r < 0) - return r; - } - - r = unit_add_default_cgroups(u); - if (r < 0) - return r; - - r = mount_fix_timeouts(m); - if (r < 0) - return r; - - return 0; -} - -static int mount_load(Unit *u) { - Mount *m = MOUNT(u); - int r; - - assert(u); - assert(u->load_state == UNIT_STUB); - - if (m->from_proc_self_mountinfo) - r = unit_load_fragment_and_dropin_optional(u); - else - r = unit_load_fragment_and_dropin(u); - - if (r < 0) - return r; - - /* This is a new unit? Then let's add in some extras */ - if (u->load_state == UNIT_LOADED) { - r = mount_add_extras(m); - if (r < 0) - return r; - - r = unit_exec_context_defaults(u, &m->exec_context); - if (r < 0) - return r; - } - - 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) { - if (state != old_state) - 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); - kill_context_dump(&m->kill_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->kill_context.kill_mode != KILL_NONE) { - int sig = (state == MOUNT_MOUNTING_SIGTERM || - state == MOUNT_UNMOUNTING_SIGTERM || - state == MOUNT_REMOUNTING_SIGTERM) ? m->kill_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->kill_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); - - if (dir_is_empty(m->where) <= 0) - log_notice("%s: Directory %s to mount over is not empty, mounting anyway. (To see the over-mounted files, please manually mount the underlying file system to a secondary location.)", m->meta.id, m->where); - - /* 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); - - r = mount_spawn(m, m->control_command, &m->control_pid); - if (r < 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, NULL)) - 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->kill_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->kill_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->kill_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; - bool load_extras = false; - - 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 (!MOUNT(u)->where) { - MOUNT(u)->where = strdup(where); - if (!MOUNT(u)->where) { - r = -ENOMEM; - goto fail; - } - } - - if (u->load_state == UNIT_ERROR) { - u->load_state = UNIT_LOADED; - u->load_error = 0; - - /* Load in the extras later on, after we - * finished initialization of the unit */ - load_extras = true; - } - } - - 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; - - if (load_extras) { - r = mount_add_extras(MOUNT(u)); - if (r < 0) - goto fail; - } - - 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 = strjoin(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, 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) { - int q; - - pid_set = set_new(trivial_hash_func, trivial_compare_func); - if (!pid_set) - return -ENOMEM; - - /* Exclude the control pid from being killed via the cgroup */ - if (m->control_pid > 0) { - q = set_put(pid_set, LONG_TO_PTR(m->control_pid)); - if (q < 0) { - r = q; - goto finish; - } - } - - q = cgroup_bonding_kill_list(UNIT(m)->cgroup_bondings, signo, false, false, pid_set, NULL); - if (q < 0 && 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 = { - .object_size = sizeof(Mount), - .exec_context_offset = offsetof(Mount, exec_context), - - .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.", - }, - }, -}; |