static int mount_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata);
static int mount_dispatch_io(sd_event_source *source, int fd, uint32_t revents, void *userdata);
-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);
m->timeout_usec = u->manager->default_timeout_start_usec;
m->directory_mode = 0755;
- exec_context_init(&m->exec_context);
- kill_context_init(&m->kill_context);
- cgroup_context_init(&m->cgroup_context);
-
- unit_cgroup_context_init_defaults(u, &m->cgroup_context);
-
if (unit_has_name(u, "-.mount")) {
/* Don't allow start/stop for root directory */
u->refuse_manual_start = true;
return sd_event_source_set_enabled(m->timer_event_source, SD_EVENT_ONESHOT);
}
- return sd_event_add_monotonic(UNIT(m)->manager->event, &m->timer_event_source, now(CLOCK_MONOTONIC) + m->timeout_usec, 0, mount_dispatch_timer, m);
+ return sd_event_add_time(
+ UNIT(m)->manager->event,
+ &m->timer_event_source,
+ CLOCK_MONOTONIC,
+ now(CLOCK_MONOTONIC) + m->timeout_usec, 0,
+ mount_dispatch_timer, m);
}
static void mount_unwatch_control_pid(Mount *m) {
mount_parameters_done(&m->parameters_proc_self_mountinfo);
mount_parameters_done(&m->parameters_fragment);
- cgroup_context_done(&m->cgroup_context);
- exec_context_done(&m->exec_context);
m->exec_runtime = exec_runtime_unref(m->exec_runtime);
exec_command_done_array(m->exec_command, _MOUNT_EXEC_COMMAND_MAX);
m->control_command = NULL;
if (!p)
return 0;
- if (path_equal(m->where, "/"))
+ if (path_equal(m->where, "/") ||
+ path_equal(m->where, "/usr"))
return 0;
if (mount_is_network(p)) {
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_sec(t, &u);
- free(t);
-
- if (r < 0) {
- log_warning_unit(UNIT(m)->id,
- "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) {
_cleanup_free_ char *e = NULL;
bool b;
path_kill_slashes(m->where);
- r = unit_add_exec_dependencies(u, &m->exec_context);
- if (r < 0)
- return r;
-
if (!u->description) {
r = unit_set_description(u, m->where);
if (r < 0)
if (r < 0)
return r;
- if (u->default_dependencies) {
- r = mount_add_default_dependencies(m);
- if (r < 0)
- return r;
- }
-
- r = unit_add_default_slice(u);
+ r = unit_patch_contexts(u);
if (r < 0)
return r;
- r = mount_fix_timeouts(m);
+ r = unit_add_exec_dependencies(u, &m->exec_context);
if (r < 0)
return r;
- r = unit_exec_context_patch_defaults(u, &m->exec_context);
+ r = unit_add_default_slice(u, &m->cgroup_context);
if (r < 0)
return r;
+ if (u->default_dependencies) {
+ r = mount_add_default_dependencies(m);
+ if (r < 0)
+ return r;
+ }
+
return 0;
}
NULL);
}
+static int fail_if_symlink(const char *unit, const char* where) {
+ assert(where);
+
+ if (is_symlink(where) > 0) {
+ log_struct_unit(LOG_WARNING,
+ unit,
+ "MESSAGE=%s: Mount on symlink %s not allowed.",
+ unit, where,
+ "WHERE=%s", where,
+ MESSAGE_ID(SD_MESSAGE_OVERMOUNTING),
+ NULL);
+
+ return -ELOOP;
+ }
+ return 0;
+}
+
static void mount_enter_unmounting(Mount *m) {
int r;
if ((r = exec_command_set(
m->control_command,
"/bin/umount",
+ "-n",
m->where,
NULL)) < 0)
goto fail;
if (p && mount_is_bind(p))
mkdir_p_label(p->what, m->directory_mode);
+ r = fail_if_symlink(m->meta.id, m->where);
+ if (r < 0)
+ goto fail;
+
if (m->from_fragment)
r = exec_command_set(
m->control_command,
"/bin/mount",
+ m->sloppy_options ? "-ns" : "-n",
m->parameters_fragment.what,
m->where,
"-t", m->parameters_fragment.fstype ? m->parameters_fragment.fstype : "auto",
r = exec_command_set(
m->control_command,
"/bin/mount",
+ m->sloppy_options ? "-ns" : "-n",
m->parameters_fragment.what,
m->where,
"-t", m->parameters_fragment.fstype ? m->parameters_fragment.fstype : "auto",
.get_timeout = mount_get_timeout,
+ .can_transient = true,
+
.enumerate = mount_enumerate,
.shutdown = mount_shutdown,
~ianmdlvl / elogind.git / blobdiff