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authorLennart Poettering <lennart@poettering.net>2017-03-01 04:03:48 +0100
committerZbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>2017-02-28 22:03:48 -0500
commite350ca3f1ecb6672b74cd25d09ef23c7b309aa5a (patch)
tree5788a9c0d3b77577122abdfe323a07af1ec1467a /src
parent74278ce56732056bb3cc75062113e393db1d6dd2 (diff)
automount: if an automount unit is masked, don't react to activation anymore (#5445)
Otherwise we'll hit an assert sooner or later. This requires us to initialize ->where even if we come back in "masked" mode, as otherwise we don't know how to operate on the automount and detach it. Fixes: #5441
Diffstat (limited to 'src')
-rw-r--r--src/core/automount.c78
1 files changed, 50 insertions, 28 deletions
diff --git a/src/core/automount.c b/src/core/automount.c
index 8ff1ca90f7..99e8047620 100644
--- a/src/core/automount.c
+++ b/src/core/automount.c
@@ -101,17 +101,17 @@ static void unmount_autofs(Automount *a) {
a->pipe_event_source = sd_event_source_unref(a->pipe_event_source);
a->pipe_fd = safe_close(a->pipe_fd);
- /* If we reload/reexecute things we keep the mount point
- * around */
- if (a->where &&
- (UNIT(a)->manager->exit_code != MANAGER_RELOAD &&
- UNIT(a)->manager->exit_code != MANAGER_REEXECUTE)) {
+ /* If we reload/reexecute things we keep the mount point around */
+ if (!IN_SET(UNIT(a)->manager->exit_code, MANAGER_RELOAD, MANAGER_REEXECUTE)) {
+
automount_send_ready(a, a->tokens, -EHOSTDOWN);
automount_send_ready(a, a->expire_tokens, -EHOSTDOWN);
- r = repeat_unmount(a->where, MNT_DETACH);
- if (r < 0)
- log_error_errno(r, "Failed to unmount: %m");
+ if (a->where) {
+ r = repeat_unmount(a->where, MNT_DETACH);
+ if (r < 0)
+ log_error_errno(r, "Failed to unmount: %m");
+ }
}
}
@@ -186,6 +186,22 @@ static int automount_verify(Automount *a) {
return 0;
}
+static int automount_set_where(Automount *a) {
+ int r;
+
+ assert(a);
+
+ if (a->where)
+ return 0;
+
+ r = unit_name_to_path(UNIT(a)->id, &a->where);
+ if (r < 0)
+ return r;
+
+ path_kill_slashes(a->where);
+ return 1;
+}
+
static int automount_load(Unit *u) {
Automount *a = AUTOMOUNT(u);
int r;
@@ -201,13 +217,9 @@ static int automount_load(Unit *u) {
if (u->load_state == UNIT_LOADED) {
Unit *x;
- if (!a->where) {
- r = unit_name_to_path(u->id, &a->where);
- if (r < 0)
- return r;
- }
-
- path_kill_slashes(a->where);
+ r = automount_set_where(a);
+ if (r < 0)
+ return r;
r = unit_load_related_unit(u, ".mount", &x);
if (r < 0)
@@ -256,26 +268,30 @@ static int automount_coldplug(Unit *u) {
assert(a);
assert(a->state == AUTOMOUNT_DEAD);
- if (a->deserialized_state != a->state) {
+ if (a->deserialized_state == a->state)
+ return 0;
+
+ if (IN_SET(a->deserialized_state, AUTOMOUNT_WAITING, AUTOMOUNT_RUNNING)) {
+
+ r = automount_set_where(a);
+ if (r < 0)
+ return r;
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);
+ 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;
+ 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");
- }
+ (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);
@@ -733,6 +749,12 @@ static void automount_enter_runnning(Automount *a) {
assert(a);
+ /* If the user masked our unit in the meantime, fail */
+ if (UNIT(a)->load_state != UNIT_LOADED) {
+ log_unit_error(UNIT(a), "Suppressing automount event since unit is no longer loaded.");
+ goto fail;
+ }
+
/* We don't take mount requests anymore if we are supposed to
* shut down anyway */
if (unit_stop_pending(UNIT(a))) {