service: allow immediate stopping while starting

[elogind.git] / src / service.c

diff --git a/src/service.c b/src/service.c
index 75439be376a5bcaf461f70eb853014ef6bd4afee..b837cb81e59c856d54a5d2a89d8bde6d4fa256f7 100644 (file)
--- a/src/service.c
+++ b/src/service.c
@@ -684,9 +684,9 @@ static int service_load_sysv_path(Service *s, const char *path) {
         /* Special setting for all SysV services */
         s->type = SERVICE_FORKING;
         s->valid_no_process = true;
-        s->kill_mode = KILL_PROCESS_GROUP;
         s->restart = SERVICE_ONCE;
         s->exec_context.std_output = EXEC_OUTPUT_TTY;
+        s->exec_context.kill_mode = KILL_PROCESS_GROUP;
 
         u->meta.load_state = UNIT_LOADED;
         r = 0;
@@ -821,7 +821,7 @@ static int service_verify(Service *s) {
                 return -EINVAL;
         }
 
-        if (s->exec_context.pam_name && s->kill_mode != KILL_CONTROL_GROUP) {
+        if (s->exec_context.pam_name && s->exec_context.kill_mode != KILL_CONTROL_GROUP) {
                 log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", s->meta.id);
                 return -EINVAL;
         }
@@ -928,14 +928,12 @@ static void service_dump(Unit *u, FILE *f, const char *prefix) {
                 "%sPermissionsStartOnly: %s\n"
                 "%sRootDirectoryStartOnly: %s\n"
                 "%sValidNoProcess: %s\n"
-                "%sKillMode: %s\n"
                 "%sType: %s\n"
                 "%sNotifyAccess: %s\n",
                 prefix, service_state_to_string(s->state),
                 prefix, yes_no(s->permissions_start_only),
                 prefix, yes_no(s->root_directory_start_only),
                 prefix, yes_no(s->valid_no_process),
-                prefix, kill_mode_to_string(s->kill_mode),
                 prefix, service_type_to_string(s->type),
                 prefix, notify_access_to_string(s->notify_access));
 
@@ -1323,6 +1321,7 @@ static int service_spawn(
                 bool pass_fds,
                 bool apply_permissions,
                 bool apply_chroot,
+                bool apply_tty_stdin,
                 bool set_notify_socket,
                 pid_t *_pid) {
 
@@ -1395,6 +1394,7 @@ static int service_spawn(
                        final_env,
                        apply_permissions,
                        apply_chroot,
+                       apply_tty_stdin,
                        s->meta.manager->confirm_spawn,
                        s->meta.cgroup_bondings,
                        &pid);
@@ -1505,6 +1505,7 @@ static void service_enter_stop_post(Service *s, bool success) {
                                        false,
                                        !s->permissions_start_only,
                                        !s->root_directory_start_only,
+                                       true,
                                        false,
                                        &s->control_pid)) < 0)
                         goto fail;
@@ -1530,10 +1531,10 @@ static void service_enter_signal(Service *s, ServiceState state, bool success) {
         if (!success)
                 s->failure = true;
 
-        if (s->kill_mode != KILL_NONE) {
-                int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? SIGTERM : SIGKILL;
+        if (s->exec_context.kill_mode != KILL_NONE) {
+                int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? s->exec_context.kill_signal : SIGKILL;
 
-                if (s->kill_mode == KILL_CONTROL_GROUP) {
+                if (s->exec_context.kill_mode == KILL_CONTROL_GROUP) {
 
                         if ((r = cgroup_bonding_kill_list(s->meta.cgroup_bondings, sig)) < 0) {
                                 if (r != -EAGAIN && r != -ESRCH)
@@ -1546,14 +1547,14 @@ static void service_enter_signal(Service *s, ServiceState state, bool success) {
                         r = 0;
 
                         if (s->main_pid > 0) {
-                                if (kill(s->kill_mode == KILL_PROCESS ? s->main_pid : -s->main_pid, sig) < 0 && errno != ESRCH)
+                                if (kill(s->exec_context.kill_mode == KILL_PROCESS ? s->main_pid : -s->main_pid, sig) < 0 && errno != ESRCH)
                                         r = -errno;
                                 else
                                         sent = true;
                         }
 
                         if (s->control_pid > 0) {
-                                if (kill(s->kill_mode == KILL_PROCESS ? s->control_pid : -s->control_pid, sig) < 0 && errno != ESRCH)
+                                if (kill(s->exec_context.kill_mode == KILL_PROCESS ? s->control_pid : -s->control_pid, sig) < 0 && errno != ESRCH)
                                         r = -errno;
                                 else
                                         sent = true;
@@ -1605,6 +1606,7 @@ static void service_enter_stop(Service *s, bool success) {
                                        !s->permissions_start_only,
                                        !s->root_directory_start_only,
                                        false,
+                                       false,
                                        &s->control_pid)) < 0)
                         goto fail;
 
@@ -1653,6 +1655,7 @@ static void service_enter_start_post(Service *s) {
                                        !s->permissions_start_only,
                                        !s->root_directory_start_only,
                                        false,
+                                       false,
                                        &s->control_pid)) < 0)
                         goto fail;
 
@@ -1687,6 +1690,7 @@ static void service_enter_start(Service *s) {
                                true,
                                true,
                                true,
+                               true,
                                s->notify_access != NOTIFY_NONE,
                                &pid)) < 0)
                 goto fail;
@@ -1747,6 +1751,7 @@ static void service_enter_start_pre(Service *s) {
                                        false,
                                        !s->permissions_start_only,
                                        !s->root_directory_start_only,
+                                       true,
                                        false,
                                        &s->control_pid)) < 0)
                         goto fail;
@@ -1800,6 +1805,7 @@ static void service_enter_reload(Service *s) {
                                        !s->permissions_start_only,
                                        !s->root_directory_start_only,
                                        false,
+                                       false,
                                        &s->control_pid)) < 0)
                         goto fail;
 
@@ -1835,6 +1841,7 @@ static void service_run_next(Service *s, bool success) {
                                !s->permissions_start_only,
                                !s->root_directory_start_only,
                                false,
+                               false,
                                &s->control_pid)) < 0)
                 goto fail;
 
@@ -1895,12 +1902,9 @@ static int service_stop(Unit *u) {
 
         assert(s);
 
-        /* Cannot do this now */
-        if (s->state == SERVICE_START_PRE ||
-            s->state == SERVICE_START ||
-            s->state == SERVICE_START_POST ||
-            s->state == SERVICE_RELOAD)
-                return -EAGAIN;
+        /* This is a user request, so don't do restarts on this
+         * shutdown. */
+        s->allow_restart = false;
 
         /* Already on it */
         if (s->state == SERVICE_STOP ||
@@ -1911,16 +1915,24 @@ static int service_stop(Unit *u) {
             s->state == SERVICE_FINAL_SIGKILL)
                 return 0;
 
+        /* Don't allow a restart */
         if (s->state == SERVICE_AUTO_RESTART) {
                 service_set_state(s, SERVICE_DEAD);
                 return 0;
         }
 
-        assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
+        /* If there's already something running we go directly into
+         * kill mode. */
+        if (s->state == SERVICE_START_PRE ||
+            s->state == SERVICE_START ||
+            s->state == SERVICE_START_POST ||
+            s->state == SERVICE_RELOAD) {
+                service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
+                return 0;
+        }
 
-        /* This is a user request, so don't do restarts on this
-         * shutdown. */
-        s->allow_restart = false;
+        assert(s->state == SERVICE_RUNNING ||
+               s->state == SERVICE_EXITED);
 
         service_enter_stop(s, true);
         return 0;
@@ -2556,6 +2568,13 @@ static int service_enumerate(Manager *m) {
                                 manager_dispatch_load_queue(m);
                                 service = unit_follow_merge(service);
 
+                                /* If this is a native service, rely
+                                 * on native ways to pull in a
+                                 * service, don't pull it in via sysv
+                                 * rcN.d links. */
+                                if (service->meta.fragment_path)
+                                        continue;
+
                                 if (de->d_name[0] == 'S') {
 
                                         if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_WANTS, rcnd_table[i].target, NULL, true)) < 0)