X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fcore%2Fmount.c;h=0c15b99f945e85a83aa42ee86acfb0062d9ed6b3;hp=73a7832430e39facc6d078d19a169bb806451c28;hb=1f19a534ea84458670ec011f6d1ba96f76e3f783;hpb=814cc562121270e2d5de0630b773792c74990a9c diff --git a/src/core/mount.c b/src/core/mount.c index 73a783243..0c15b99f9 100644 --- a/src/core/mount.c +++ b/src/core/mount.c @@ -25,6 +25,7 @@ #include #include +#include "manager.h" #include "unit.h" #include "mount.h" #include "load-fragment.h" @@ -58,13 +59,79 @@ static const UnitActiveState state_translation_table[_MOUNT_STATE_MAX] = { [MOUNT_FAILED] = UNIT_FAILED }; +static char* mount_test_option(const char *haystack, const char *needle) { + struct mntent me = { .mnt_opts = (char*) haystack }; + + assert(needle); + + /* Like glibc's hasmntopt(), but works on a string, not a + * struct mntent */ + + if (!haystack) + return NULL; + + 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; + + if (mount_test_option(p->options, "rbind")) + return true; + + if (p->fstype && streq(p->fstype, "rbind")) + return true; + + return false; +} + +static bool mount_is_auto(MountParameters *p) { + assert(p); + + return !mount_test_option(p->options, "noauto"); +} + +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 void mount_init(Unit *u) { Mount *m = MOUNT(u); assert(u); assert(u->load_state == UNIT_STUB); - m->timeout_usec = DEFAULT_TIMEOUT_USEC; + m->timeout_usec = u->manager->default_timeout_start_usec; m->directory_mode = 0755; exec_context_init(&m->exec_context); @@ -81,6 +148,7 @@ static void mount_init(Unit *u) { } kill_context_init(&m->kill_context); + cgroup_context_init(&m->cgroup_context); /* We need to make sure that /bin/mount is always called in * the same process group as us, so that the autofs kernel @@ -126,7 +194,8 @@ static void mount_done(Unit *u) { mount_parameters_done(&m->parameters_proc_self_mountinfo); mount_parameters_done(&m->parameters_fragment); - exec_context_done(&m->exec_context); + cgroup_context_done(&m->cgroup_context); + exec_context_done(&m->exec_context, manager_is_reloading_or_reexecuting(u->manager)); exec_command_done_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX); m->control_command = NULL; @@ -135,7 +204,7 @@ static void mount_done(Unit *u) { unit_unwatch_timer(u, &m->timer_watch); } -static MountParameters* get_mount_parameters_fragment(Mount *m) { +_pure_ static MountParameters* get_mount_parameters_fragment(Mount *m) { assert(m); if (m->from_fragment) @@ -144,7 +213,7 @@ static MountParameters* get_mount_parameters_fragment(Mount *m) { return NULL; } -static MountParameters* get_mount_parameters(Mount *m) { +_pure_ static MountParameters* get_mount_parameters(Mount *m) { assert(m); if (m->from_proc_self_mountinfo) @@ -154,208 +223,69 @@ static MountParameters* get_mount_parameters(Mount *m) { } static int mount_add_mount_links(Mount *m) { - Unit *other; - int r; + _cleanup_free_ char *parent = NULL; 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; + Iterator i; + Set *s; int r; assert(m); - LIST_FOREACH(units_by_type, other, UNIT(m)->manager->units_by_type[UNIT_SWAP]) { - r = swap_add_one_mount_link(SWAP(other), m); + if (!path_equal(m->where, "/")) { + /* Adds in links to other mount points that might lie further + * up in the hierarchy */ + r = path_get_parent(m->where, &parent); if (r < 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]) { - r = path_add_one_mount_link(PATH(other), m); + r = unit_require_mounts_for(UNIT(m), parent); if (r < 0) return r; } - return 0; -} - -static int mount_add_automount_links(Mount *m) { - Unit *other; - int r; - - assert(m); + /* Adds in links to other mount points that might be needed + * for the source path (if this is a bind mount) to be + * available. */ + pm = get_mount_parameters_fragment(m); + if (pm && pm->what && + path_is_absolute(pm->what) && + !mount_is_network(pm)) { - LIST_FOREACH(units_by_type, other, UNIT(m)->manager->units_by_type[UNIT_AUTOMOUNT]) { - r = automount_add_one_mount_link(AUTOMOUNT(other), m); + r = unit_require_mounts_for(UNIT(m), pm->what); if (r < 0) return r; } - return 0; -} + /* Adds in links to other units that use this path or paths + * further down in the hierarchy */ + s = manager_get_units_requiring_mounts_for(UNIT(m)->manager, m->where); + SET_FOREACH(other, s, i) { -static int mount_add_socket_links(Mount *m) { - Unit *other; - int r; + if (other->load_state != UNIT_LOADED) + continue; - assert(m); + if (other == UNIT(m)) + continue; - LIST_FOREACH(units_by_type, other, UNIT(m)->manager->units_by_type[UNIT_SOCKET]) { - r = socket_add_one_mount_link(SOCKET(other), m); + r = unit_add_dependency(other, UNIT_AFTER, UNIT(m), true); if (r < 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; + if (UNIT(m)->fragment_path) { + /* If we have fragment configuration, then make this dependency required */ + r = unit_add_dependency(other, UNIT_REQUIRES, UNIT(m), true); + 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; - - if (mount_test_option(p->options, "rbind")) - return true; - - if (p->fstype && streq(p->fstype, "rbind")) - 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; + bool device_wants_mount = false; int r; assert(m); @@ -376,37 +306,13 @@ static int mount_add_device_links(Mount *m) { if (path_equal(m->where, "/")) return 0; - r = unit_add_node_link(UNIT(m), p->what, false); + if (mount_is_auto(p) && UNIT(m)->manager->running_as == SYSTEMD_SYSTEM) + device_wants_mount = true; + + r = unit_add_node_link(UNIT(m), p->what, device_wants_mount); 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_unit(name, - "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; } @@ -437,10 +343,25 @@ static int mount_add_quota_links(Mount *m) { return 0; } +static bool should_umount(Mount *m) { + MountParameters *p; + + if (path_equal(m->where, "/") || + path_equal(m->where, "/usr")) + return false; + + p = get_mount_parameters(m); + if (p && mount_test_option(p->options, "x-initrd.mount") && + !in_initrd()) + return false; + + return true; +} + static int mount_add_default_dependencies(Mount *m) { - int r; + const char *after, *after2, *online; MountParameters *p; - const char *after; + int r; assert(m); @@ -455,18 +376,37 @@ static int mount_add_default_dependencies(Mount *m) { if (path_equal(m->where, "/")) return 0; - if (mount_is_network(p)) + if (mount_is_network(p)) { after = SPECIAL_REMOTE_FS_PRE_TARGET; - else + after2 = SPECIAL_NETWORK_TARGET; + online = SPECIAL_NETWORK_ONLINE_TARGET; + } else { after = SPECIAL_LOCAL_FS_PRE_TARGET; + after2 = NULL; + online = NULL; + } - r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_WANTS, UNIT_AFTER, after, NULL, true); + r = unit_add_dependency_by_name(UNIT(m), 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; + if (after2) { + r = unit_add_dependency_by_name(UNIT(m), UNIT_AFTER, after2, NULL, true); + if (r < 0) + return r; + } + + if (online) { + r = unit_add_two_dependencies_by_name(UNIT(m), UNIT_WANTS, UNIT_AFTER, online, NULL, true); + if (r < 0) + return r; + } + + if (should_umount(m)) { + 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; } @@ -502,7 +442,7 @@ static int mount_fix_timeouts(Mount *m) { if (!t) return -ENOMEM; - r = parse_usec(t, &u); + r = parse_sec(t, &u); free(t); if (r < 0) { @@ -523,8 +463,9 @@ static int mount_fix_timeouts(Mount *m) { } static int mount_verify(Mount *m) { + _cleanup_free_ char *e = NULL; bool b; - char *e; + assert(m); if (UNIT(m)->load_state != UNIT_LOADED) @@ -533,12 +474,11 @@ static int mount_verify(Mount *m) { if (!m->from_fragment && !m->from_proc_self_mountinfo) return -ENOENT; - if (!(e = unit_name_from_path(m->where, ".mount"))) + e = unit_name_from_path(m->where, ".mount"); + if (!e) return -ENOMEM; b = unit_has_name(UNIT(m), e); - free(e); - if (!b) { log_error_unit(UNIT(m)->id, "%s's Where setting doesn't match unit name. Refusing.", @@ -602,26 +542,6 @@ static int mount_add_extras(Mount *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; @@ -632,7 +552,7 @@ static int mount_add_extras(Mount *m) { return r; } - r = unit_add_default_cgroups(u); + r = unit_add_default_slice(u); if (r < 0) return r; @@ -805,9 +725,9 @@ static void mount_dump(Unit *u, FILE *f, const char *prefix) { 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, p ? strna(p->what) : "n/a", + prefix, p ? strna(p->fstype) : "n/a", + prefix, p ? strna(p->options) : "n/a", prefix, yes_no(m->from_proc_self_mountinfo), prefix, yes_no(m->from_fragment), prefix, m->directory_mode); @@ -829,28 +749,31 @@ static int mount_spawn(Mount *m, ExecCommand *c, pid_t *_pid) { assert(c); assert(_pid); + unit_realize_cgroup(UNIT(m)); + r = unit_watch_timer(UNIT(m), CLOCK_MONOTONIC, true, m->timeout_usec, &m->timer_watch); if (r < 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) + r = exec_spawn(c, + NULL, + &m->exec_context, + NULL, 0, + UNIT(m)->manager->environment, + true, + true, + true, + UNIT(m)->manager->confirm_spawn, + UNIT(m)->manager->cgroup_supported, + UNIT(m)->cgroup_path, + UNIT(m)->id, + NULL, + &pid); + if (r < 0) goto fail; - if ((r = unit_watch_pid(UNIT(m), pid)) < 0) + r = unit_watch_pid(UNIT(m), pid); + if (r < 0) /* FIXME: we need to do something here */ goto fail; @@ -870,6 +793,7 @@ static void mount_enter_dead(Mount *m, MountResult f) { if (f != MOUNT_SUCCESS) m->result = f; + exec_context_tmp_dirs_done(&m->exec_context); mount_set_state(m, m->result != MOUNT_SUCCESS ? MOUNT_FAILED : MOUNT_DEAD); } @@ -1163,6 +1087,8 @@ static int mount_serialize(Unit *u, FILE *f, FDSet *fds) { if (m->control_command_id >= 0) unit_serialize_item(u, f, "control-command", mount_exec_command_to_string(m->control_command_id)); + exec_context_serialize(&m->exec_context, UNIT(m), f); + return 0; } @@ -1219,7 +1145,22 @@ static int mount_deserialize_item(Unit *u, const char *key, const char *value, F m->control_command_id = id; m->control_command = m->exec_command + id; } + } else if (streq(key, "tmp-dir")) { + char *t; + + t = strdup(value); + if (!t) + return log_oom(); + + m->exec_context.tmp_dir = t; + } else if (streq(key, "var-tmp-dir")) { + char *t; + t = strdup(value); + if (!t) + return log_oom(); + + m->exec_context.var_tmp_dir = t; } else log_debug_unit(UNIT(m)->id, "Unknown serialization key '%s'", key); @@ -1227,19 +1168,19 @@ static int mount_deserialize_item(Unit *u, const char *key, const char *value, F return 0; } -static UnitActiveState mount_active_state(Unit *u) { +_pure_ 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) { +_pure_ 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) { +_pure_ static bool mount_check_gc(Unit *u) { Mount *m = MOUNT(u); assert(m); @@ -1442,7 +1383,6 @@ static int mount_add_one( const char *where, const char *options, const char *fstype, - int passno, bool set_flags) { int r; Unit *u; @@ -1475,6 +1415,9 @@ static int mount_add_one( u = manager_get_unit(m, e); if (!u) { + const char* const target = + fstype_is_network(fstype) ? SPECIAL_REMOTE_FS_TARGET : SPECIAL_LOCAL_FS_TARGET; + delete = true; u = unit_new(m, sizeof(Mount)); @@ -1501,6 +1444,16 @@ static int mount_add_one( goto fail; } + r = unit_add_dependency_by_name(u, UNIT_BEFORE, target, NULL, true); + if (r < 0) + goto fail; + + if (should_umount(MOUNT(u))) { + r = unit_add_dependency_by_name(u, UNIT_CONFLICTS, SPECIAL_UMOUNT_TARGET, NULL, true); + if (r < 0) + goto fail; + } + unit_add_to_load_queue(u); } else { delete = false; @@ -1514,7 +1467,7 @@ static int mount_add_one( } } - if (u->load_state == UNIT_ERROR) { + if (u->load_state == UNIT_NOT_FOUND) { u->load_state = UNIT_LOADED; u->load_error = 0; @@ -1549,8 +1502,6 @@ static int mount_add_one( free(p->fstype); p->fstype = f; - p->passno = passno; - if (load_extras) { r = mount_add_extras(MOUNT(u)); if (r < 0) @@ -1575,79 +1526,56 @@ fail: 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++) { + _cleanup_free_ char *device = NULL, *path = NULL, *options = NULL, *options2 = NULL, *fstype = NULL, *d = NULL, *p = NULL, *o = NULL; 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; - + 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); + + if (k == EOF) + break; + + if (k != 5) { log_warning("Failed to parse /proc/self/mountinfo:%u.", i); - goto clean_up; + continue; } o = strjoin(options, ",", options2, NULL); - if (!o) { - r = -ENOMEM; - goto finish; - } + if (!o) + return log_oom(); - if (!(d = cunescape(device)) || - !(p = cunescape(path))) { - r = -ENOMEM; - goto finish; - } + d = cunescape(device); + p = cunescape(path); + if (!d || !p) + return log_oom(); - if ((k = mount_add_one(m, d, p, o, fstype, 0, set_flags)) < 0) + k = mount_add_one(m, d, p, o, fstype, set_flags); + if (k < 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; } @@ -1662,25 +1590,27 @@ static void mount_shutdown(Manager *m) { 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"))) + struct epoll_event ev = { + .events = EPOLLPRI, + .data.ptr = &m->mount_watch, + }; + + m->proc_self_mountinfo = fopen("/proc/self/mountinfo", "re"); + if (!m->proc_self_mountinfo) 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) + r = mount_load_proc_self_mountinfo(m, false); + if (r < 0) goto fail; return 0; @@ -1829,8 +1759,9 @@ const UnitVTable mount_vtable = { "Mount\0" "Install\0", + .private_section = "Mount", .exec_context_offset = offsetof(Mount, exec_context), - .exec_section = "Mount", + .cgroup_context_offset = offsetof(Mount, cgroup_context), .no_alias = true, .no_instances = true, @@ -1865,6 +1796,8 @@ const UnitVTable mount_vtable = { .bus_interface = "org.freedesktop.systemd1.Mount", .bus_message_handler = bus_mount_message_handler, .bus_invalidating_properties = bus_mount_invalidating_properties, + .bus_set_property = bus_mount_set_property, + .bus_commit_properties = bus_mount_commit_properties, .enumerate = mount_enumerate, .shutdown = mount_shutdown,