chiark / gitweb /
service: calculate sysv startup priority only in start runlevels
[elogind.git] / src / service.c
index 1525aaea9e0acf4f1383fb115791a6db64666b8c..efa52778a66f6342a4fa805704dd6012859a2fdb 100644 (file)
@@ -95,7 +95,7 @@ static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
         [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
         [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
         [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
-        [SERVICE_MAINTENANCE] = UNIT_MAINTENANCE,
+        [SERVICE_FAILED] = UNIT_FAILED,
         [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING
 };
 
@@ -251,9 +251,17 @@ static int sysv_translate_facility(const char *name, char **_r) {
                 "$time",      SPECIAL_RTC_SET_TARGET,
 
                 /* Debian extensions */
+#ifdef TARGET_DEBIAN
                 "$mail-transport-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
+#endif
                 "$mail-transfer-agent",  SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
-                "$x-display-manager",    SPECIAL_DISPLAY_MANAGER_SERVICE
+                "$x-display-manager",    SPECIAL_DISPLAY_MANAGER_SERVICE,
+
+#ifdef TARGET_FEDORA
+                /* Fedora extensions, lacking the $ prefix */
+                "MTA",        SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
+                "smtpdaemon", SPECIAL_MAIL_TRANSFER_AGENT_TARGET
+#endif
         };
 
         unsigned i;
@@ -566,13 +574,19 @@ static int service_load_sysv_path(Service *s, const char *path) {
 
                                         if (unit_name_to_type(m) == UNIT_SERVICE)
                                                 r = unit_add_name(u, m);
-                                        else if (s->sysv_enabled)
-                                                r = unit_add_two_dependencies_by_name_inverse(u, UNIT_AFTER, UNIT_WANTS, m, NULL, true);
-                                        else
-                                                r = unit_add_dependency_by_name_inverse(u, UNIT_AFTER, m, NULL, true);
+                                        else {
+                                                r = unit_add_dependency_by_name(u, UNIT_BEFORE, m, NULL, true);
+
+                                                if (s->sysv_enabled) {
+                                                        int k;
+
+                                                        if ((k = unit_add_dependency_by_name_inverse(u, UNIT_WANTS, m, NULL, true)) < 0)
+                                                                r = k;
+                                                }
+                                        }
 
                                         if (r < 0)
-                                                log_error("[%s:%u] Failed to add LSB Provides name %s: %s. Ignoring.", path, line, m, strerror(-r));
+                                                log_error("[%s:%u] Failed to add LSB Provides name %s, ignoring: %s", path, line, m, strerror(-r));
 
                                         free(m);
                                 }
@@ -606,7 +620,7 @@ static int service_load_sysv_path(Service *s, const char *path) {
                                         r = unit_add_dependency_by_name(u, startswith_no_case(t, "X-Start-Before:") ? UNIT_BEFORE : UNIT_AFTER, m, NULL, true);
 
                                         if (r < 0)
-                                                log_error("Failed to add dependency on %s, ignoring: %s", m, strerror(-r));
+                                                log_error("[%s:%u] Failed to add dependency on %s, ignoring: %s", path, line, m, strerror(-r));
 
                                         free(m);
                                 }
@@ -1189,7 +1203,7 @@ static void service_set_state(Service *s, ServiceState state) {
             state == SERVICE_STOP_POST ||
             state == SERVICE_FINAL_SIGTERM ||
             state == SERVICE_FINAL_SIGKILL ||
-            state == SERVICE_MAINTENANCE ||
+            state == SERVICE_FAILED ||
             state == SERVICE_AUTO_RESTART)
                 service_notify_sockets_dead(s);
 
@@ -1513,7 +1527,7 @@ static void service_enter_dead(Service *s, bool success, bool allow_restart) {
 
                 service_set_state(s, SERVICE_AUTO_RESTART);
         } else
-                service_set_state(s, s->failure ? SERVICE_MAINTENANCE : SERVICE_DEAD);
+                service_set_state(s, s->failure ? SERVICE_FAILED : SERVICE_DEAD);
 
         s->forbid_restart = false;
 
@@ -1562,7 +1576,8 @@ fail:
 
 static void service_enter_signal(Service *s, ServiceState state, bool success) {
         int r;
-        bool sent = false;
+        Set *pid_set = NULL;
+        bool wait_for_exit = false;
 
         assert(s);
 
@@ -1572,38 +1587,53 @@ static void service_enter_signal(Service *s, ServiceState state, bool success) {
         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->exec_context.kill_mode == KILL_CONTROL_GROUP) {
+                if (s->main_pid > 0) {
+                        if (kill(s->exec_context.kill_mode == KILL_PROCESS_GROUP ?
+                                 -s->main_pid :
+                                 s->main_pid, sig) < 0 && errno != ESRCH)
 
-                        if ((r = cgroup_bonding_kill_list(s->meta.cgroup_bondings, sig)) < 0) {
-                                if (r != -EAGAIN && r != -ESRCH)
-                                        goto fail;
-                        } else
-                                sent = true;
+                                log_warning("Failed to kill main process %li: %m", (long) s->main_pid);
+                        else
+                                wait_for_exit = true;
                 }
 
-                if (!sent) {
-                        r = 0;
+                if (s->control_pid > 0) {
+                        if (kill(s->exec_context.kill_mode == KILL_PROCESS_GROUP ?
+                                 -s->control_pid :
+                                 s->control_pid, sig) < 0 && errno != ESRCH)
 
-                        if (s->main_pid > 0) {
-                                if (kill(s->exec_context.kill_mode == KILL_PROCESS ? s->main_pid : -s->main_pid, sig) < 0 && errno != ESRCH)
-                                        r = -errno;
-                                else
-                                        sent = true;
-                        }
+                                log_warning("Failed to kill control process %li: %m", (long) s->control_pid);
+                        else
+                                wait_for_exit = true;
+                }
 
-                        if (s->control_pid > 0) {
-                                if (kill(s->exec_context.kill_mode == KILL_PROCESS ? s->control_pid : -s->control_pid, sig) < 0 && errno != ESRCH)
-                                        r = -errno;
-                                else
-                                        sent = true;
-                        }
+                if (s->exec_context.kill_mode == KILL_CONTROL_GROUP) {
 
-                        if (r < 0)
+                        if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) {
+                                r = -ENOMEM;
                                 goto fail;
+                        }
+
+                        /* Exclude the main/control pids from being killed via the cgroup */
+                        if (s->main_pid > 0)
+                                if ((r = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0)
+                                        goto fail;
+
+                        if (s->control_pid > 0)
+                                if ((r = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0)
+                                        goto fail;
+
+                        if ((r = cgroup_bonding_kill_list(s->meta.cgroup_bondings, sig, pid_set)) < 0) {
+                                if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
+                                        log_warning("Failed to kill control group: %s", strerror(-r));
+                        } else if (r > 0)
+                                wait_for_exit = true;
+
+                        set_free(pid_set);
                 }
         }
 
-        if (sent && (s->main_pid > 0 || s->control_pid > 0)) {
+        if (wait_for_exit) {
                 if (s->timeout_usec > 0)
                         if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
                                 goto fail;
@@ -1623,6 +1653,9 @@ fail:
                 service_enter_stop_post(s, false);
         else
                 service_enter_dead(s, false, true);
+
+        if (pid_set)
+                set_free(pid_set);
 }
 
 static void service_enter_stop(Service *s, bool success) {
@@ -1814,7 +1847,7 @@ static void service_enter_restart(Service *s) {
 
         service_enter_dead(s, true, false);
 
-        if ((r = manager_add_job(s->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, NULL, NULL)) < 0)
+        if ((r = manager_add_job(s->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, &error, NULL)) < 0)
                 goto fail;
 
         log_debug("%s scheduled restart job.", s->meta.id);
@@ -1958,7 +1991,7 @@ static int service_start(Unit *u) {
             s->state == SERVICE_START_POST)
                 return 0;
 
-        assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTENANCE || s->state == SERVICE_AUTO_RESTART);
+        assert(s->state == SERVICE_DEAD || s->state == SERVICE_FAILED || s->state == SERVICE_AUTO_RESTART);
 
         /* Make sure we don't enter a busy loop of some kind. */
         if (!ratelimit_test(&s->ratelimit)) {
@@ -2512,7 +2545,7 @@ static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
                 break;
 
         case SERVICE_FINAL_SIGKILL:
-                log_warning("%s still around after SIGKILL (2). Entering maintenance mode.", u->meta.id);
+                log_warning("%s still around after SIGKILL (2). Entering failed mode.", u->meta.id);
                 service_enter_dead(s, false, true);
                 break;
 
@@ -2545,6 +2578,20 @@ static void service_cgroup_notify_event(Unit *u) {
                 service_enter_running(s, true);
                 break;
 
+        case SERVICE_STOP_SIGTERM:
+        case SERVICE_STOP_SIGKILL:
+                if (main_pid_good(s) <= 0 && !control_pid_good(s))
+                        service_enter_stop_post(s, true);
+
+                break;
+
+        case SERVICE_FINAL_SIGTERM:
+        case SERVICE_FINAL_SIGKILL:
+                if (main_pid_good(s) <= 0 && !control_pid_good(s))
+                        service_enter_dead(s, true, true);
+
+                break;
+
         default:
                 ;
         }
@@ -2624,10 +2671,15 @@ static int service_enumerate(Manager *m) {
         unsigned i;
         DIR *d = NULL;
         char *path = NULL, *fpath = NULL, *name = NULL;
+        Set *runlevel_services[ELEMENTSOF(rcnd_table)], *shutdown_services = NULL;
+        Unit *service;
+        Iterator j;
         int r;
 
         assert(m);
 
+        zero(runlevel_services);
+
         STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
                 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
                         struct dirent *de;
@@ -2650,7 +2702,6 @@ static int service_enumerate(Manager *m) {
                         }
 
                         while ((de = readdir(d))) {
-                                Unit *service;
                                 int a, b;
 
                                 if (ignore_file(de->d_name))
@@ -2694,54 +2745,70 @@ static int service_enumerate(Manager *m) {
                                         continue;
                                 }
 
-                                if (de->d_name[0] == 'S' &&
-                                    (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_SYSINIT)) {
-                                        SERVICE(service)->sysv_start_priority =
-                                                MAX(a*10 + b, SERVICE(service)->sysv_start_priority);
-                                        SERVICE(service)->sysv_enabled = true;
-                                }
+                                if (de->d_name[0] == 'S')  {
 
-                                manager_dispatch_load_queue(m);
-                                service = unit_follow_merge(service);
+                                        if (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_SYSINIT) {
+                                                SERVICE(service)->sysv_start_priority =
+                                                        MAX(a*10 + b, SERVICE(service)->sysv_start_priority);
 
-                                /* 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;
+                                                SERVICE(service)->sysv_enabled = true;
+                                        }
 
-                                if (de->d_name[0] == 'S') {
+                                        if ((r = set_ensure_allocated(&runlevel_services[i], trivial_hash_func, trivial_compare_func)) < 0)
+                                                goto finish;
 
-                                        if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_WANTS, rcnd_table[i].target, NULL, true)) < 0)
+                                        if ((r = set_put(runlevel_services[i], service)) < 0)
                                                 goto finish;
 
                                 } else if (de->d_name[0] == 'K' &&
                                            (rcnd_table[i].type == RUNLEVEL_DOWN ||
                                             rcnd_table[i].type == RUNLEVEL_SYSINIT)) {
 
-                                        /* We honour K links only for
-                                         * halt/reboot. For the normal
-                                         * runlevels we assume the
-                                         * stop jobs will be
-                                         * implicitly added by the
-                                         * core logic. Also, we don't
-                                         * really distuingish here
-                                         * between the runlevels 0 and
-                                         * 6 and just add them to the
-                                         * special shutdown target. On
-                                         * SUSE the boot.d/ runlevel
-                                         * is also used for shutdown,
-                                         * so we add links for that
-                                         * too to the shutdown
-                                         * target.*/
-
-                                        if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true)) < 0)
+                                        if ((r = set_ensure_allocated(&shutdown_services, trivial_hash_func, trivial_compare_func)) < 0)
+                                                goto finish;
+
+                                        if ((r = set_put(shutdown_services, service)) < 0)
                                                 goto finish;
                                 }
                         }
                 }
 
+        /* Now we loaded all stubs and are aware of the lowest
+        start-up priority for all services, not let's actually load
+        the services, this will also tell us which services are
+        actually native now */
+        manager_dispatch_load_queue(m);
+
+        /* 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. */
+        for (i = 0; i < ELEMENTSOF(rcnd_table); i ++)
+                SET_FOREACH(service, runlevel_services[i], j) {
+                        service = unit_follow_merge(service);
+
+                        if (service->meta.fragment_path)
+                                continue;
+
+                        if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_WANTS, rcnd_table[i].target, NULL, true)) < 0)
+                                goto finish;
+                }
+
+        /* We honour K links only for halt/reboot. For the normal
+         * runlevels we assume the stop jobs will be implicitly added
+         * by the core logic. Also, we don't really distuingish here
+         * between the runlevels 0 and 6 and just add them to the
+         * special shutdown target. On SUSE the boot.d/ runlevel is
+         * also used for shutdown, so we add links for that too to the
+         * shutdown target.*/
+        SET_FOREACH(service, shutdown_services, j) {
+                service = unit_follow_merge(service);
+
+                if (service->meta.fragment_path)
+                        continue;
+
+                if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true)) < 0)
+                        goto finish;
+        }
+
         r = 0;
 
 finish:
@@ -2749,6 +2816,10 @@ finish:
         free(fpath);
         free(name);
 
+        for (i = 0; i < ELEMENTSOF(rcnd_table); i++)
+                set_free(runlevel_services[i]);
+        set_free(shutdown_services);
+
         if (d)
                 closedir(d);
 
@@ -2845,12 +2916,12 @@ int service_set_socket_fd(Service *s, int fd, Socket *sock) {
         return 0;
 }
 
-static void service_reset_maintenance(Unit *u) {
+static void service_reset_failed(Unit *u) {
         Service *s = SERVICE(u);
 
         assert(s);
 
-        if (s->state == SERVICE_MAINTENANCE)
+        if (s->state == SERVICE_FAILED)
                 service_set_state(s, SERVICE_DEAD);
 
         s->failure = false;
@@ -2870,7 +2941,7 @@ static const char* const service_state_table[_SERVICE_STATE_MAX] = {
         [SERVICE_STOP_POST] = "stop-post",
         [SERVICE_FINAL_SIGTERM] = "final-sigterm",
         [SERVICE_FINAL_SIGKILL] = "final-sigkill",
-        [SERVICE_MAINTENANCE] = "maintenance",
+        [SERVICE_FAILED] = "failed",
         [SERVICE_AUTO_RESTART] = "auto-restart",
 };
 
@@ -2943,7 +3014,7 @@ const UnitVTable service_vtable = {
         .sigchld_event = service_sigchld_event,
         .timer_event = service_timer_event,
 
-        .reset_maintenance = service_reset_maintenance,
+        .reset_failed = service_reset_failed,
 
         .cgroup_notify_empty = service_cgroup_notify_event,
         .notify_message = service_notify_message,