chiark / gitweb /
service: properly pass dbus error structure
[elogind.git] / src / service.c
index ee952810fc138b35c4ff2d7cc968a1cfb76cae73..85dd5d4175536d3f87f96fa917180932b574f3ca 100644 (file)
@@ -1,4 +1,4 @@
-/*-*- Mode: C; c-basic-offset: 8 -*-*/
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
 
 /***
   This file is part of systemd.
@@ -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;
@@ -488,7 +496,7 @@ static int service_load_sysv_path(Service *s, const char *path) {
                                         t[k-1] = 0;
                                 }
 
-                                if (!(d = strdup(strstrip(t+12)))) {
+                                if (!(d = strappend("LSB: ", strstrip(t+12)))) {
                                         r = -ENOMEM;
                                         goto finish;
                                 }
@@ -571,10 +579,10 @@ static int service_load_sysv_path(Service *s, const char *path) {
                                         else
                                                 r = unit_add_dependency_by_name_inverse(u, UNIT_AFTER, m, NULL, true);
 
-                                        free(m);
-
                                         if (r < 0)
-                                                goto finish;
+                                                log_error("[%s:%u] Failed to add LSB Provides name %s, ignoring: %s", path, line, m, strerror(-r));
+
+                                        free(m);
                                 }
 
                         } else if (startswith_no_case(t, "Required-Start:") ||
@@ -604,10 +612,11 @@ static int service_load_sysv_path(Service *s, const char *path) {
                                                 continue;
 
                                         r = unit_add_dependency_by_name(u, startswith_no_case(t, "X-Start-Before:") ? UNIT_BEFORE : UNIT_AFTER, m, NULL, true);
-                                        free(m);
 
                                         if (r < 0)
-                                                goto finish;
+                                                log_error("[%s:%u] Failed to add dependency on %s, ignoring: %s", path, line, m, strerror(-r));
+
+                                        free(m);
                                 }
                         } else if (startswith_no_case(t, "Default-Start:")) {
                                 char *k, *d;
@@ -635,7 +644,7 @@ static int service_load_sysv_path(Service *s, const char *path) {
 
                                 state = LSB_DESCRIPTION;
 
-                                if (!(d = strdup(strstrip(t+12)))) {
+                                if (!(d = strappend("LSB: ", strstrip(t+12)))) {
                                         r = -ENOMEM;
                                         goto finish;
                                 }
@@ -648,7 +657,7 @@ static int service_load_sysv_path(Service *s, const char *path) {
 
                                 state = LSB;
 
-                                if (!(d = strdup(strstrip(t+18)))) {
+                                if (!(d = strappend("LSB: ", strstrip(t+18)))) {
                                         r = -ENOMEM;
                                         goto finish;
                                 }
@@ -706,9 +715,11 @@ 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->remain_after_exit = true;
         s->restart = SERVICE_ONCE;
-        s->exec_context.std_output = s->meta.manager->sysv_console ? EXEC_OUTPUT_TTY : EXEC_OUTPUT_NULL;
+        s->exec_context.std_output =
+                (s->meta.manager->sysv_console || s->exec_context.std_input == EXEC_INPUT_TTY)
+                ? EXEC_OUTPUT_TTY : EXEC_OUTPUT_NULL;
         s->exec_context.kill_mode = KILL_PROCESS_GROUP;
 
         u->meta.load_state = UNIT_LOADED;
@@ -951,14 +962,14 @@ static void service_dump(Unit *u, FILE *f, const char *prefix) {
                 "%sService State: %s\n"
                 "%sPermissionsStartOnly: %s\n"
                 "%sRootDirectoryStartOnly: %s\n"
-                "%sValidNoProcess: %s\n"
+                "%sRemainAfterExit: %s\n"
                 "%sType: %s\n"
                 "%sRestart: %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, yes_no(s->remain_after_exit),
                 prefix, service_type_to_string(s->type),
                 prefix, service_restart_to_string(s->restart),
                 prefix, notify_access_to_string(s->notify_access));
@@ -1186,7 +1197,7 @@ 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);
 
@@ -1510,7 +1521,7 @@ 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;
 
@@ -1559,7 +1570,8 @@ 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);
 
@@ -1569,38 +1581,53 @@ 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
+                                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;
@@ -1620,6 +1647,9 @@ 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) {
@@ -1669,7 +1699,7 @@ static void service_enter_running(Service *s, bool success) {
         if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
             (s->bus_name_good || s->type != SERVICE_DBUS))
                 service_set_state(s, SERVICE_RUNNING);
-        else if (s->valid_no_process)
+        else if (s->remain_after_exit)
                 service_set_state(s, SERVICE_EXITED);
         else
                 service_enter_stop(s, true);
@@ -1811,7 +1841,7 @@ 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);
@@ -1955,7 +1985,7 @@ 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)) {
@@ -2261,7 +2291,10 @@ static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
         assert(s);
         assert(pid >= 0);
 
-        success = is_clean_exit(code, status);
+        if (s->sysv_path)
+                success = is_clean_exit_lsb(code, status);
+        else
+                success = is_clean_exit(code, status);
 
         if (s->main_pid == pid) {
 
@@ -2449,6 +2482,9 @@ static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
                         }
                 }
         }
+
+        /* Notify clients about changed exit status */
+        unit_add_to_dbus_queue(u);
 }
 
 static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
@@ -2503,7 +2539,7 @@ 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;
 
@@ -2605,6 +2641,9 @@ static void service_notify_message(Unit *u, pid_t pid, char **tags) {
                 }
 
         }
+
+        /* Notify clients about changed status or main pid */
+        unit_add_to_dbus_queue(u);
 }
 
 static int service_enumerate(Manager *m) {
@@ -2833,12 +2872,12 @@ 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;
@@ -2858,7 +2897,7 @@ 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",
 };
 
@@ -2931,7 +2970,7 @@ 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,
@@ -2939,7 +2978,9 @@ const UnitVTable service_vtable = {
         .bus_name_owner_change = service_bus_name_owner_change,
         .bus_query_pid_done = service_bus_query_pid_done,
 
+        .bus_interface = "org.freedesktop.systemd1.Service",
         .bus_message_handler = bus_service_message_handler,
+        .bus_invalidating_properties =  bus_service_invalidating_properties,
 
         .enumerate = service_enumerate
 };