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authorLennart Poettering <lennart@poettering.net>2015-04-28 20:45:25 +0200
committerLennart Poettering <lennart@poettering.net>2015-04-28 21:34:23 +0200
commita509f0e631b12cfec6aafe4d152532109082efc9 (patch)
tree9ca5c37019c6d4ba7a70c4dff486e3ef5d4da3e8 /src/core/service.c
parent597466f49752a52e85ea04051d020f97e8739f72 (diff)
service: make restart logic a bit easier to understand
Diffstat (limited to 'src/core/service.c')
-rw-r--r--src/core/service.c56
1 files changed, 45 insertions, 11 deletions
diff --git a/src/core/service.c b/src/core/service.c
index d004728671..3a614b1c7a 100644
--- a/src/core/service.c
+++ b/src/core/service.c
@@ -1268,6 +1268,49 @@ static int cgroup_good(Service *s) {
return !r;
}
+static bool service_shall_restart(Service *s) {
+ assert(s);
+
+ /* Don't restart after manual stops */
+ if (s->forbid_restart)
+ return false;
+
+ /* Never restart if this is configured as special exception */
+ if (exit_status_set_test(&s->restart_prevent_status, s->main_exec_status.code, s->main_exec_status.status))
+ return false;
+
+ /* Restart if the exit code/status are configured as restart triggers */
+ if (exit_status_set_test(&s->restart_force_status, s->main_exec_status.code, s->main_exec_status.status))
+ return true;
+
+ switch (s->restart) {
+
+ case SERVICE_RESTART_NO:
+ return false;
+
+ case SERVICE_RESTART_ALWAYS:
+ return true;
+
+ case SERVICE_RESTART_ON_SUCCESS:
+ return s->result == SERVICE_SUCCESS;
+
+ case SERVICE_RESTART_ON_FAILURE:
+ return s->result != SERVICE_SUCCESS;
+
+ case SERVICE_RESTART_ON_ABNORMAL:
+ return !IN_SET(s->result, SERVICE_SUCCESS, SERVICE_FAILURE_EXIT_CODE);
+
+ case SERVICE_RESTART_ON_WATCHDOG:
+ return s->result == SERVICE_FAILURE_WATCHDOG;
+
+ case SERVICE_RESTART_ON_ABORT:
+ return IN_SET(s->result, SERVICE_FAILURE_SIGNAL, SERVICE_FAILURE_CORE_DUMP);
+
+ default:
+ assert_not_reached("unknown restart setting");
+ }
+}
+
static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) {
int r;
assert(s);
@@ -1282,16 +1325,7 @@ static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart)
failure_action(UNIT(s)->manager, s->failure_action, s->reboot_arg);
}
- if (allow_restart &&
- !s->forbid_restart &&
- (s->restart == SERVICE_RESTART_ALWAYS ||
- (s->restart == SERVICE_RESTART_ON_SUCCESS && s->result == SERVICE_SUCCESS) ||
- (s->restart == SERVICE_RESTART_ON_FAILURE && s->result != SERVICE_SUCCESS) ||
- (s->restart == SERVICE_RESTART_ON_ABNORMAL && !IN_SET(s->result, SERVICE_SUCCESS, SERVICE_FAILURE_EXIT_CODE)) ||
- (s->restart == SERVICE_RESTART_ON_WATCHDOG && s->result == SERVICE_FAILURE_WATCHDOG) ||
- (s->restart == SERVICE_RESTART_ON_ABORT && IN_SET(s->result, SERVICE_FAILURE_SIGNAL, SERVICE_FAILURE_CORE_DUMP)) ||
- exit_status_set_test(&s->restart_force_status, s->main_exec_status.code, s->main_exec_status.status)) &&
- !exit_status_set_test(&s->restart_prevent_status, s->main_exec_status.code, s->main_exec_status.status)) {
+ if (allow_restart && service_shall_restart(s)) {
r = service_arm_timer(s, s->restart_usec);
if (r < 0)
@@ -1896,7 +1930,7 @@ static int service_stop(Unit *u) {
assert(s);
- /* Don't create restart jobs from here. */
+ /* Don't create restart jobs from manual stops. */
s->forbid_restart = true;
/* Already on it */