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automount: don't try to umount if it already happened

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Return the token immediately instead. Otherwise the token is never returned
to the kernel, because the umount job is a noop and will not trigger a
state change.
This commit is contained in:
Michael Olbrich 2015-07-24 22:21:59 +02:00
parent 816b4547da
commit 5f8ae398ae
1 changed files with 14 additions and 0 deletions
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14
src/core/automount.c
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@ -907,6 +907,7 @@ static int automount_dispatch_io(sd_event_source *s, int fd, uint32_t events, vo
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
union autofs_v5_packet_union packet;
Automount *a = AUTOMOUNT(userdata);
struct stat st;
int r;
assert(a);
@ -966,6 +967,19 @@ static int automount_dispatch_io(sd_event_source *s, int fd, uint32_t events, vo
log_unit_error_errno(UNIT(a), r, "Failed to remember token: %m");
goto fail;
}
/* Before we do anything, let's see if somebody is playing games with us? */
if (lstat(a->where, &st) < 0) {
log_unit_warning_errno(UNIT(a), errno, "Failed to stat automount point: %m");
goto fail;
}
if (!S_ISDIR(st.st_mode) || st.st_dev == a->dev_id) {
log_unit_info(UNIT(a), "Automount point already unmounted?");
automount_send_ready(a, a->expire_tokens, 0);
break;
}
r = manager_add_job(UNIT(a)->manager, JOB_STOP, UNIT_TRIGGER(UNIT(a)), JOB_REPLACE, true, &error, NULL);
if (r < 0) {
log_unit_warning(UNIT(a), "Failed to queue umount startup job: %s", bus_error_message(&error, r));