X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fservice.c;h=ee952810fc138b35c4ff2d7cc968a1cfb76cae73;hp=fce1b27aca64f2018a9a6eeeea0225d806cb0254;hb=34e9ba669e75fb3b8f481076e75df5c2abb8192b;hpb=2cf3143ac3650feff2e3069d6d02bb8e46ab1929 diff --git a/src/service.c b/src/service.c index fce1b27ac..ee952810f 100644 --- a/src/service.c +++ b/src/service.c @@ -566,7 +566,7 @@ 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_start_priority >= 0) + 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); @@ -708,7 +708,7 @@ static int service_load_sysv_path(Service *s, const char *path) { s->type = SERVICE_FORKING; s->valid_no_process = true; s->restart = SERVICE_ONCE; - s->exec_context.std_output = EXEC_OUTPUT_TTY; + s->exec_context.std_output = s->meta.manager->sysv_console ? EXEC_OUTPUT_TTY : EXEC_OUTPUT_NULL; s->exec_context.kill_mode = KILL_PROCESS_GROUP; u->meta.load_state = UNIT_LOADED; @@ -797,7 +797,7 @@ static int service_load_sysv(Service *s) { if (t == s->meta.id) continue; - if ((r == service_load_sysv_name(s, t)) < 0) + if ((r = service_load_sysv_name(s, t)) < 0) return r; if (s->meta.load_state != UNIT_STUB) @@ -834,8 +834,9 @@ static int service_verify(Service *s) { return -EINVAL; } - if (s->exec_command[SERVICE_EXEC_START]->command_next) { - log_error("%s has more than one ExecStart setting. Refusing.", s->meta.id); + if (s->type != SERVICE_ONESHOT && + s->exec_command[SERVICE_EXEC_START]->command_next) { + log_error("%s has more than one ExecStart setting, which is only allowed for Type=oneshot services. Refusing.", s->meta.id); return -EINVAL; } @@ -873,7 +874,7 @@ static int service_add_default_dependencies(Service *s) { } /* Second, activate normal shutdown */ - return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true); + return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTED_BY, SPECIAL_SHUTDOWN_TARGET, NULL, true); } static int service_load(Unit *u) { @@ -1006,8 +1007,10 @@ static void service_dump(Unit *u, FILE *f, const char *prefix) { if (s->sysv_start_priority >= 0) fprintf(f, - "%sSysVStartPriority: %i\n", - prefix, s->sysv_start_priority); + "%sSysVStartPriority: %i\n" + "%sSysVEnabled: %s\n", + prefix, s->sysv_start_priority, + prefix, yes_no(s->sysv_enabled)); if (s->sysv_runlevels) fprintf(f, "%sSysVRunLevels: %s\n", @@ -1248,7 +1251,7 @@ static int service_coldplug(Unit *u) { if ((s->deserialized_state == SERVICE_START && (s->type == SERVICE_FORKING || s->type == SERVICE_DBUS || - s->type == SERVICE_FINISH || + s->type == SERVICE_ONESHOT || s->type == SERVICE_NOTIFY)) || s->deserialized_state == SERVICE_START_POST || s->deserialized_state == SERVICE_RUNNING || @@ -1498,7 +1501,7 @@ static void service_enter_dead(Service *s, bool success, bool allow_restart) { s->failure = true; if (allow_restart && - s->allow_restart && + !s->forbid_restart && (s->restart == SERVICE_RESTART_ALWAYS || (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) { @@ -1509,6 +1512,8 @@ static void service_enter_dead(Service *s, bool success, bool allow_restart) { } else service_set_state(s, s->failure ? SERVICE_MAINTENANCE : SERVICE_DEAD); + s->forbid_restart = false; + return; fail: @@ -1707,15 +1712,18 @@ static void service_enter_start(Service *s) { assert(s); assert(s->exec_command[SERVICE_EXEC_START]); - assert(!s->exec_command[SERVICE_EXEC_START]->command_next); + assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT); if (s->type == SERVICE_FORKING) service_unwatch_control_pid(s); else service_unwatch_main_pid(s); + s->control_command_id = SERVICE_EXEC_START; + s->control_command = s->exec_command[SERVICE_EXEC_START]; + if ((r = service_spawn(s, - s->exec_command[SERVICE_EXEC_START], + s->control_command, s->type == SERVICE_FORKING || s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY, true, true, @@ -1737,17 +1745,14 @@ static void service_enter_start(Service *s) { /* For forking services we wait until the start * process exited. */ - s->control_command_id = SERVICE_EXEC_START; - s->control_command = s->exec_command[SERVICE_EXEC_START]; - s->control_pid = pid; service_set_state(s, SERVICE_START); - } else if (s->type == SERVICE_FINISH || + } else if (s->type == SERVICE_ONESHOT || s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY) { - /* For finishing services we wait until the start + /* For oneshot services we wait until the start * process exited, too, but it is our main process. */ /* For D-Bus services we know the main pid right away, @@ -1850,7 +1855,7 @@ fail: service_enter_stop(s, false); } -static void service_run_next(Service *s, bool success) { +static void service_run_next_control(Service *s, bool success) { int r; assert(s); @@ -1860,8 +1865,9 @@ static void service_run_next(Service *s, bool success) { if (!success) s->failure = true; - s->control_command = s->control_command->command_next; + assert(s->control_command_id != SERVICE_EXEC_START); + s->control_command = s->control_command->command_next; service_unwatch_control_pid(s); if ((r = service_spawn(s, @@ -1879,7 +1885,7 @@ static void service_run_next(Service *s, bool success) { return; fail: - log_warning("%s failed to run next task: %s", s->meta.id, strerror(-r)); + log_warning("%s failed to run next control task: %s", s->meta.id, strerror(-r)); if (s->state == SERVICE_START_PRE) service_enter_signal(s, SERVICE_FINAL_SIGTERM, false); @@ -1891,6 +1897,43 @@ fail: service_enter_stop(s, false); } +static void service_run_next_main(Service *s, bool success) { + pid_t pid; + int r; + + assert(s); + assert(s->control_command); + assert(s->control_command->command_next); + + if (!success) + s->failure = true; + + assert(s->control_command_id == SERVICE_EXEC_START); + assert(s->type == SERVICE_ONESHOT); + + s->control_command = s->control_command->command_next; + service_unwatch_main_pid(s); + + if ((r = service_spawn(s, + s->control_command, + false, + true, + true, + true, + true, + s->notify_access != NOTIFY_NONE, + &pid)) < 0) + goto fail; + + service_set_main_pid(s, pid); + + return; + +fail: + log_warning("%s failed to run next main task: %s", s->meta.id, strerror(-r)); + service_enter_stop(s, false); +} + static int service_start(Unit *u) { Service *s = SERVICE(u); @@ -1930,7 +1973,7 @@ static int service_start(Unit *u) { s->failure = false; s->main_pid_known = false; - s->allow_restart = true; + s->forbid_restart = false; service_enter_start_pre(s); return 0; @@ -1943,7 +1986,7 @@ static int service_stop(Unit *u) { /* This is a user request, so don't do restarts on this * shutdown. */ - s->allow_restart = false; + s->forbid_restart = true; /* Already on it */ if (s->state == SERVICE_STOP || @@ -2059,7 +2102,6 @@ static int service_serialize(Unit *u, FILE *f, FDSet *fds) { static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) { Service *s = SERVICE(u); - int r; assert(u); assert(key); @@ -2083,14 +2125,14 @@ static int service_deserialize_item(Unit *u, const char *key, const char *value, } else if (streq(key, "control-pid")) { pid_t pid; - if ((r = parse_pid(value, &pid)) < 0) + if (parse_pid(value, &pid) < 0) log_debug("Failed to parse control-pid value %s", value); else s->control_pid = pid; } else if (streq(key, "main-pid")) { pid_t pid; - if ((r = parse_pid(value, &pid)) < 0) + if (parse_pid(value, &pid) < 0) log_debug("Failed to parse main-pid value %s", value); else service_set_main_pid(s, (pid_t) pid); @@ -2132,49 +2174,49 @@ static int service_deserialize_item(Unit *u, const char *key, const char *value, } else if (streq(key, "main-exec-status-pid")) { pid_t pid; - if ((r = parse_pid(value, &pid)) < 0) + if (parse_pid(value, &pid) < 0) log_debug("Failed to parse main-exec-status-pid value %s", value); else s->main_exec_status.pid = pid; } else if (streq(key, "main-exec-status-code")) { int i; - if ((r = safe_atoi(value, &i)) < 0) + if (safe_atoi(value, &i) < 0) log_debug("Failed to parse main-exec-status-code value %s", value); else s->main_exec_status.code = i; } else if (streq(key, "main-exec-status-status")) { int i; - if ((r = safe_atoi(value, &i)) < 0) + if (safe_atoi(value, &i) < 0) log_debug("Failed to parse main-exec-status-status value %s", value); else s->main_exec_status.status = i; } else if (streq(key, "main-exec-status-start-realtime")) { uint64_t k; - if ((r = safe_atou64(value, &k)) < 0) + if (safe_atou64(value, &k) < 0) log_debug("Failed to parse main-exec-status-start-realtime value %s", value); else s->main_exec_status.start_timestamp.realtime = (usec_t) k; } else if (streq(key, "main-exec-status-start-monotonic")) { uint64_t k; - if ((r = safe_atou64(value, &k)) < 0) + if (safe_atou64(value, &k) < 0) log_debug("Failed to parse main-exec-status-start-monotonic value %s", value); else s->main_exec_status.start_timestamp.monotonic = (usec_t) k; } else if (streq(key, "main-exec-status-exit-realtime")) { uint64_t k; - if ((r = safe_atou64(value, &k)) < 0) + if (safe_atou64(value, &k) < 0) log_debug("Failed to parse main-exec-status-exit-realtime value %s", value); else s->main_exec_status.exit_timestamp.realtime = (usec_t) k; } else if (streq(key, "main-exec-status-exit-monotonic")) { uint64_t k; - if ((r = safe_atou64(value, &k)) < 0) + if (safe_atou64(value, &k) < 0) log_debug("Failed to parse main-exec-status-exit-monotonic value %s", value); else s->main_exec_status.exit_timestamp.monotonic = (usec_t) k; @@ -2223,14 +2265,13 @@ static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { if (s->main_pid == pid) { - exec_status_exit(&s->main_exec_status, pid, code, status); s->main_pid = 0; + exec_status_exit(&s->main_exec_status, pid, code, status); - if (s->type != SERVICE_FORKING) { - assert(s->exec_command[SERVICE_EXEC_START]); - s->exec_command[SERVICE_EXEC_START]->exec_status = s->main_exec_status; + if (s->type != SERVICE_FORKING && s->control_command) { + s->control_command->exec_status = s->main_exec_status; - if (s->exec_command[SERVICE_EXEC_START]->ignore) + if (s->control_command->ignore) success = true; } @@ -2238,51 +2279,69 @@ static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { "%s: main process exited, code=%s, status=%i", u->meta.id, sigchld_code_to_string(code), status); s->failure = s->failure || !success; - /* The service exited, so the service is officially - * gone. */ + if (s->control_command && + s->control_command->command_next && + success) { - switch (s->state) { + /* There is another command to * + * execute, so let's do that. */ - case SERVICE_START_POST: - case SERVICE_RELOAD: - case SERVICE_STOP: - /* Need to wait until the operation is - * done */ - break; + log_debug("%s running next main command for state %s", u->meta.id, service_state_to_string(s->state)); + service_run_next_main(s, success); - case SERVICE_START: - if (s->type == SERVICE_FINISH) { - /* This was our main goal, so let's go on */ - if (success) - service_enter_start_post(s); - else - service_enter_signal(s, SERVICE_FINAL_SIGTERM, false); + } else { + + /* The service exited, so the service is officially + * gone. */ + + s->control_command = NULL; + s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID; + + switch (s->state) { + + case SERVICE_START_POST: + case SERVICE_RELOAD: + case SERVICE_STOP: + /* Need to wait until the operation is + * done */ break; - } else { - assert(s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY); - /* Fall through */ - } + case SERVICE_START: + if (s->type == SERVICE_ONESHOT) { + /* This was our main goal, so let's go on */ + if (success) + service_enter_start_post(s); + else + service_enter_signal(s, SERVICE_FINAL_SIGTERM, false); + break; + } else { + assert(s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY); - case SERVICE_RUNNING: - service_enter_running(s, success); - break; + /* Fall through */ + } + + case SERVICE_RUNNING: + service_enter_running(s, success); + break; - case SERVICE_STOP_SIGTERM: - case SERVICE_STOP_SIGKILL: + case SERVICE_STOP_SIGTERM: + case SERVICE_STOP_SIGKILL: - if (!control_pid_good(s)) - service_enter_stop_post(s, success); + if (!control_pid_good(s)) + service_enter_stop_post(s, success); - /* If there is still a control process, wait for that first */ - break; + /* If there is still a control process, wait for that first */ + break; - default: - assert_not_reached("Uh, main process died at wrong time."); + default: + assert_not_reached("Uh, main process died at wrong time."); + } } } else if (s->control_pid == pid) { + s->control_pid = 0; + if (s->control_command) { exec_status_exit(&s->control_command->exec_status, pid, code, status); @@ -2290,22 +2349,19 @@ static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) { success = true; } - s->control_pid = 0; - - log_full(success ? LOG_DEBUG : LOG_NOTICE, + log_full(success ? LOG_DEBUG : LOG_NOTICE, "%s: control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status); s->failure = s->failure || !success; - /* If we are shutting things down anyway we - * don't care about failing commands. */ - - if (s->control_command && s->control_command->command_next && success) { + if (s->control_command && + s->control_command->command_next && + success) { /* There is another command to * * execute, so let's do that. */ - log_debug("%s running next command for state %s", u->meta.id, service_state_to_string(s->state)); - service_run_next(s, success); + log_debug("%s running next control command for state %s", u->meta.id, service_state_to_string(s->state)); + service_run_next_control(s, success); } else { /* No further commands for this step, so let's @@ -2627,9 +2683,11 @@ static int service_enumerate(Manager *m) { } if (de->d_name[0] == 'S' && - (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_SYSINIT)) + (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; + } manager_dispatch_load_queue(m); service = unit_follow_merge(service); @@ -2817,7 +2875,7 @@ DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart); static const char* const service_type_table[_SERVICE_TYPE_MAX] = { [SERVICE_SIMPLE] = "simple", [SERVICE_FORKING] = "forking", - [SERVICE_FINISH] = "finish", + [SERVICE_ONESHOT] = "oneshot", [SERVICE_DBUS] = "dbus", [SERVICE_NOTIFY] = "notify" };