static int automount_dispatch_expire(sd_event_source *source, usec_t usec, void *userdata) {
Automount *a = AUTOMOUNT(userdata);
_cleanup_(expire_data_freep) struct expire_data *data = NULL;
int r;
assert(a);
assert(source == a->expire_event_source);
data = new0(struct expire_data, 1);
if (!data)
return log_oom();
data->ioctl_fd = -1;
data->dev_autofs_fd = fcntl(UNIT(a)->manager->dev_autofs_fd, F_DUPFD_CLOEXEC, 3);
if (data->dev_autofs_fd < 0)
return log_unit_error_errno(UNIT(a), errno, "Failed to duplicate autofs fd: %m");
data->ioctl_fd = open_ioctl_fd(UNIT(a)->manager->dev_autofs_fd, a->where, a->dev_id);
if (data->ioctl_fd < 0)
return log_unit_error_errno(UNIT(a), data->ioctl_fd, "Couldn't open autofs ioctl fd: %m");
r = asynchronous_job(expire_thread, data);
if (r < 0)
return log_unit_error_errno(UNIT(a), r, "Failed to start expire job: %m");
data = NULL;
return automount_start_expire(a);
}
static int automount_coldplug(Unit *u) {
Automount *a = AUTOMOUNT(u);
int r;
assert(a);
assert(a->state == AUTOMOUNT_DEAD);
if (a->deserialized_state != a->state) {
r = open_dev_autofs(u->manager);
if (r < 0)
return r;
if (a->deserialized_state == AUTOMOUNT_WAITING ||
a->deserialized_state == AUTOMOUNT_RUNNING) {
assert(a->pipe_fd >= 0);
r = sd_event_add_io(u->manager->event, &a->pipe_event_source, a->pipe_fd, EPOLLIN, automount_dispatch_io, u);
if (r < 0)
return r;
(void) sd_event_source_set_description(a->pipe_event_source, "automount-io");
if (a->deserialized_state == AUTOMOUNT_RUNNING) {
r = automount_start_expire(a);
if (r < 0)
log_unit_warning_errno(UNIT(a), r, "Failed to start expiration timer, ignoring: %m");
}
}
automount_set_state(a, a->deserialized_state);
}
return 0;
}
int automount_update_mount(Automount *a, MountState old_state, MountState state) {
int r;
assert(a);
switch (state) {
case MOUNT_MOUNTED:
case MOUNT_REMOUNTING:
automount_send_ready(a, a->tokens, 0);
r = automount_start_expire(a);
if (r < 0)
log_unit_warning_errno(UNIT(a), r, "Failed to start expiration timer, ignoring: %m");
break;
case MOUNT_DEAD:
case MOUNT_UNMOUNTING:
case MOUNT_MOUNTING_SIGTERM:
case MOUNT_MOUNTING_SIGKILL:
case MOUNT_REMOUNTING_SIGTERM:
case MOUNT_REMOUNTING_SIGKILL:
case MOUNT_UNMOUNTING_SIGTERM:
case MOUNT_UNMOUNTING_SIGKILL:
case MOUNT_FAILED:
if (old_state != state)
automount_send_ready(a, a->tokens, -ENODEV);
(void) sd_event_source_set_enabled(a->expire_event_source, SD_EVENT_OFF);
break;
default:
break;
}
switch (state) {
case MOUNT_DEAD:
automount_send_ready(a, a->expire_tokens, 0);
break;
case MOUNT_MOUNTING:
case MOUNT_MOUNTING_DONE:
case MOUNT_MOUNTING_SIGTERM:
case MOUNT_MOUNTING_SIGKILL:
case MOUNT_REMOUNTING_SIGTERM:
case MOUNT_REMOUNTING_SIGKILL:
case MOUNT_UNMOUNTING_SIGTERM:
case MOUNT_UNMOUNTING_SIGKILL:
case MOUNT_FAILED:
if (old_state != state)
automount_send_ready(a, a->expire_tokens, -ENODEV);
break;
default:
break;
}
return 0;
}
static void automount_trigger_notify(Unit *u, Unit *other) {
Automount *a = AUTOMOUNT(u);
int r;
assert(a);
assert(other);
/* Filter out invocations with bogus state */
if (other->load_state != UNIT_LOADED || other->type != UNIT_MOUNT)
return;
/* Don't propagate state changes from the mount if we are already down */
if (!IN_SET(a->state, AUTOMOUNT_WAITING, AUTOMOUNT_RUNNING))
return;
/* Propagate start limit hit state */
if (other->start_limit_hit) {
automount_enter_dead(a, AUTOMOUNT_FAILURE_MOUNT_START_LIMIT_HIT);
return;
}
/* Don't propagate anything if there's still a job queued */
if (other->job)
return;
/* The mount is successfully established */
if (IN_SET(MOUNT(other)->state, MOUNT_MOUNTED, MOUNT_REMOUNTING)) {
(void) automount_send_ready(a, a->tokens, 0);
r = automount_start_expire(a);
if (r < 0)
log_unit_warning_errno(UNIT(a), r, "Failed to start expiration timer, ignoring: %m");
automount_set_state(a, AUTOMOUNT_RUNNING);
}
if (IN_SET(MOUNT(other)->state,
MOUNT_MOUNTING, MOUNT_MOUNTING_DONE,
MOUNT_MOUNTED, MOUNT_REMOUNTING,
MOUNT_MOUNTING_SIGTERM, MOUNT_MOUNTING_SIGKILL,
MOUNT_REMOUNTING_SIGTERM, MOUNT_REMOUNTING_SIGKILL,
MOUNT_UNMOUNTING_SIGTERM, MOUNT_UNMOUNTING_SIGKILL,
MOUNT_FAILED)) {
(void) automount_send_ready(a, a->expire_tokens, -ENODEV);
}
if (MOUNT(other)->state == MOUNT_DEAD)
(void) automount_send_ready(a, a->expire_tokens, 0);
/* The mount is in some unhappy state now, let's unfreeze any waiting clients */
if (IN_SET(MOUNT(other)->state,
MOUNT_DEAD, MOUNT_UNMOUNTING,
MOUNT_MOUNTING_SIGTERM, MOUNT_MOUNTING_SIGKILL,
MOUNT_REMOUNTING_SIGTERM, MOUNT_REMOUNTING_SIGKILL,
MOUNT_UNMOUNTING_SIGTERM, MOUNT_UNMOUNTING_SIGKILL,
MOUNT_FAILED)) {
(void) automount_send_ready(a, a->tokens, -ENODEV);
automount_set_state(a, AUTOMOUNT_WAITING);
}
}
