/*-*- Mode: C; c-basic-offset: 8 -*-*/
#include <errno.h>
+#include <signal.h>
#include "name.h"
#include "service.h"
#include "load-fragment.h"
#include "load-dropin.h"
+#include "log.h"
+
+static const NameActiveState state_table[_SERVICE_STATE_MAX] = {
+ [SERVICE_DEAD] = NAME_INACTIVE,
+ [SERVICE_START_PRE] = NAME_ACTIVATING,
+ [SERVICE_START] = NAME_ACTIVATING,
+ [SERVICE_START_POST] = NAME_ACTIVATING,
+ [SERVICE_RUNNING] = NAME_ACTIVE,
+ [SERVICE_RELOAD] = NAME_ACTIVE_RELOADING,
+ [SERVICE_STOP] = NAME_DEACTIVATING,
+ [SERVICE_STOP_SIGTERM] = NAME_DEACTIVATING,
+ [SERVICE_STOP_SIGKILL] = NAME_DEACTIVATING,
+ [SERVICE_STOP_POST] = NAME_DEACTIVATING,
+ [SERVICE_FINAL_SIGTERM] = NAME_DEACTIVATING,
+ [SERVICE_FINAL_SIGKILL] = NAME_DEACTIVATING,
+ [SERVICE_MAINTAINANCE] = NAME_INACTIVE,
+ [SERVICE_AUTO_RESTART] = NAME_ACTIVATING,
+};
+
+static void service_done(Name *n) {
+ Service *s = SERVICE(n);
+
+ assert(s);
+
+ free(s->pid_file);
+ s->pid_file = NULL;
+
+ exec_context_done(&s->exec_context);
+ exec_command_free_array(s->exec_command, _SERVICE_EXEC_MAX);
+ s->control_command = NULL;
+
+ /* This will leak a process, but at least no memory or any of
+ * our resources */
+ if (s->main_pid > 0) {
+ name_unwatch_pid(n, s->main_pid);
+ s->main_pid = 0;
+ }
+
+ if (s->control_pid > 0) {
+ name_unwatch_pid(n, s->control_pid);
+ s->control_pid = 0;
+ }
+
+ name_unwatch_timer(n, &s->timer_id);
+}
static int service_load_sysv(Service *s) {
assert(s);
return -ENOENT;
}
-static int service_load(Name *n) {
+static int service_init(Name *n) {
int r;
Service *s = SERVICE(n);
assert(s);
- exec_context_defaults(&s->exec_context);
+ /* First, reset everything to the defaults, in case this is a
+ * reload */
+
+ s->type = 0;
+ s->restart = 0;
+
+ s->timeout_usec = DEFAULT_TIMEOUT_USEC;
+ s->restart_usec = DEFAULT_RESTART_USEC;
+
+ exec_context_init(&s->exec_context);
+
+ s->timer_id = -1;
+
+ s->state = SERVICE_DEAD;
/* Load a .service file */
r = name_load_fragment(n);
if (r == -ENOENT)
r = service_load_sysv(s);
- if (r < 0)
+ if (r < 0) {
+ service_done(n);
return r;
+ }
/* Load dropin directory data */
- if ((r = name_load_dropin(n)) < 0)
+ if ((r = name_load_dropin(n)) < 0) {
+ service_done(n);
return r;
+ }
return 0;
}
[SERVICE_START] = "start",
[SERVICE_START_POST] = "post",
[SERVICE_RUNNING] = "running",
- [SERVICE_RELOAD_PRE] = "reload-pre",
[SERVICE_RELOAD] = "reload",
- [SERVICE_RELOAD_POST] = "reload-post",
- [SERVICE_STOP_PRE] = "stop-pre",
[SERVICE_STOP] = "stop",
- [SERVICE_SIGTERM] = "sigterm",
- [SERVICE_SIGKILL] = "sigkill",
+ [SERVICE_STOP_SIGTERM] = "stop-sigterm",
+ [SERVICE_STOP_SIGKILL] = "stop-sigkill",
[SERVICE_STOP_POST] = "stop-post",
- [SERVICE_MAINTAINANCE] = "maintainance"
+ [SERVICE_FINAL_SIGTERM] = "final-sigterm",
+ [SERVICE_FINAL_SIGKILL] = "final-sigkill",
+ [SERVICE_MAINTAINANCE] = "maintainance",
+ [SERVICE_AUTO_RESTART] = "auto-restart",
};
static const char* const command_table[_SERVICE_EXEC_MAX] = {
- [SERVICE_EXEC_START_PRE] = "StartPre",
- [SERVICE_EXEC_START] = "Start",
- [SERVICE_EXEC_START_POST] = "StartPost",
- [SERVICE_EXEC_RELOAD_PRE] = "ReloadPre",
- [SERVICE_EXEC_RELOAD] = "Reload",
- [SERVICE_EXEC_RELOAD_POST] = "ReloadPost",
- [SERVICE_EXEC_STOP_PRE] = "StopPre",
- [SERVICE_EXEC_STOP] = "Stop",
- [SERVICE_EXEC_STOP_POST] = "StopPost",
+ [SERVICE_EXEC_START_PRE] = "ExecStartPre",
+ [SERVICE_EXEC_START] = "ExecStart",
+ [SERVICE_EXEC_START_POST] = "ExecStartPost",
+ [SERVICE_EXEC_RELOAD] = "ExecReload",
+ [SERVICE_EXEC_STOP] = "ExecStop",
+ [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
};
ServiceExecCommand c;
Service *s = SERVICE(n);
+ char *prefix2;
assert(s);
+ prefix2 = strappend(prefix, "\t");
+ if (!prefix2)
+ prefix2 = "";
+
fprintf(f,
"%sService State: %s\n",
prefix, state_table[s->state]);
+ if (s->pid_file)
+ fprintf(f,
+ "%sPIDFile: %s\n",
+ prefix, s->pid_file);
+
+
exec_context_dump(&s->exec_context, f, prefix);
for (c = 0; c < _SERVICE_EXEC_MAX; c++) {
- ExecCommand *i;
- LIST_FOREACH(i, s->exec_command[c])
- fprintf(f, "%s%s: %s\n", prefix, command_table[c], i->path);
+ if (!s->exec_command[c])
+ continue;
+
+ fprintf(f, "%s→ %s:\n",
+ prefix, command_table[c]);
+
+ exec_command_dump_list(s->exec_command[c], f, prefix2);
+ }
+
+ free(prefix2);
+}
+
+static int service_load_pid_file(Service *s) {
+ char *k;
+ unsigned long p;
+ int r;
+
+ assert(s);
+
+ if (s->main_pid_known)
+ return 0;
+
+ if (!s->pid_file)
+ return -ENOENT;
+
+ if ((r = read_one_line_file(s->pid_file, &k)) < 0)
+ return r;
+
+ if ((r = safe_atolu(k, &p)) < 0) {
+ free(k);
+ return r;
}
+
+ if ((unsigned long) (pid_t) p != p)
+ return -ERANGE;
+
+ s->main_pid = p;
+ s->main_pid_known = true;
+
+ return 0;
}
-static int service_set_state(Service *s, ServiceState state) {
+static void service_set_state(Service *s, ServiceState state) {
+ ServiceState old_state;
assert(s);
+ old_state = s->state;
s->state = state;
+
+ if (state != SERVICE_START_PRE &&
+ state != SERVICE_START &&
+ state != SERVICE_START_POST &&
+ state != SERVICE_RELOAD &&
+ state != SERVICE_STOP &&
+ state != SERVICE_STOP_SIGTERM &&
+ state != SERVICE_STOP_SIGKILL &&
+ state != SERVICE_STOP_POST &&
+ state != SERVICE_FINAL_SIGTERM &&
+ state != SERVICE_FINAL_SIGKILL &&
+ state != SERVICE_AUTO_RESTART)
+ name_unwatch_timer(NAME(s), &s->timer_id);
+
+ if (state != SERVICE_START_POST &&
+ state != SERVICE_RUNNING &&
+ state != SERVICE_RELOAD &&
+ state != SERVICE_STOP &&
+ state != SERVICE_STOP_SIGTERM &&
+ state != SERVICE_STOP_SIGKILL)
+ if (s->main_pid >= 0) {
+ name_unwatch_pid(NAME(s), s->main_pid);
+ s->main_pid = 0;
+ }
+
+ if (state != SERVICE_START_PRE &&
+ state != SERVICE_START &&
+ state != SERVICE_START_POST &&
+ state != SERVICE_RELOAD &&
+ state != SERVICE_STOP &&
+ state != SERVICE_STOP_SIGTERM &&
+ state != SERVICE_STOP_SIGKILL &&
+ state != SERVICE_STOP_POST &&
+ state != SERVICE_FINAL_SIGTERM &&
+ state != SERVICE_FINAL_SIGKILL)
+ if (s->control_pid >= 0) {
+ name_unwatch_pid(NAME(s), s->control_pid);
+ s->control_pid = 0;
+ }
+
+ if (state != SERVICE_START_PRE &&
+ state != SERVICE_START &&
+ state != SERVICE_START_POST &&
+ state != SERVICE_RELOAD &&
+ state != SERVICE_STOP &&
+ state != SERVICE_STOP_POST)
+ s->control_command = NULL;
+
+ name_notify(NAME(s), state_table[old_state], state_table[s->state]);
+}
+
+static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
+ Iterator i;
+ int r;
+ int *rfds = NULL;
+ unsigned rn_fds = 0;
+ char *t;
+
+ assert(s);
+ assert(fds);
+ assert(n_fds);
+
+ SET_FOREACH(t, NAME(s)->meta.names, i) {
+ char *k;
+ Name *p;
+ int *cfds;
+ unsigned cn_fds;
+
+ /* Look for all socket objects that go by any of our
+ * names and collect their fds */
+
+ if (!(k = name_change_suffix(t, ".socket"))) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ p = manager_get_name(NAME(s)->meta.manager, k);
+ free(k);
+
+ if ((r = socket_collect_fds(SOCKET(p), &cfds, &cn_fds)) < 0)
+ goto fail;
+
+ if (!cfds)
+ continue;
+
+ if (!rfds) {
+ rfds = cfds;
+ rn_fds = cn_fds;
+ } else {
+ int *t;
+
+ if (!(t = new(int, rn_fds+cn_fds))) {
+ free(cfds);
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ memcpy(t, rfds, rn_fds);
+ memcpy(t+rn_fds, cfds, cn_fds);
+ free(rfds);
+ free(cfds);
+
+ rfds = t;
+ rn_fds = rn_fds+cn_fds;
+ }
+ }
+
+ *fds = rfds;
+ *n_fds = rn_fds;
+ return 0;
+
+fail:
+ free(rfds);
+ return r;
+}
+
+static int service_spawn(Service *s, ExecCommand *c, bool timeout, bool pass_fds, pid_t *_pid) {
+ pid_t pid;
+ int r;
+ int *fds = NULL;
+ unsigned n_fds = 0;
+
+ assert(s);
+ assert(c);
+ assert(_pid);
+
+ if (pass_fds)
+ if ((r = service_collect_fds(s, &fds, &n_fds)) < 0)
+ goto fail;
+
+ if (timeout) {
+ if ((r = name_watch_timer(NAME(s), s->timeout_usec, &s->timer_id)) < 0)
+ goto fail;
+ } else
+ name_unwatch_timer(NAME(s), &s->timer_id);
+
+ if ((r = exec_spawn(c, &s->exec_context, fds, n_fds, &pid)) < 0)
+ goto fail;
+
+ if ((r = name_watch_pid(NAME(s), pid)) < 0)
+ /* FIXME: we need to do something here */
+ goto fail;
+
+ free(fds);
+ *_pid = pid;
+
return 0;
+
+fail:
+ free(fds);
+
+ if (timeout)
+ name_unwatch_timer(NAME(s), &s->timer_id);
+
+ return r;
+}
+
+static void service_enter_dead(Service *s, bool success, bool allow_restart) {
+ int r;
+ assert(s);
+
+ if (!success)
+ s->failure = true;
+
+ if (allow_restart &&
+ (s->restart == SERVICE_RESTART_ALWAYS ||
+ (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) {
+
+ if ((r = name_watch_timer(NAME(s), s->restart_usec, &s->timer_id)) < 0)
+ goto fail;
+
+ service_set_state(s, SERVICE_AUTO_RESTART);
+ } else
+ service_set_state(s, s->failure ? SERVICE_MAINTAINANCE : SERVICE_DEAD);
+
+ return;
+
+fail:
+ log_warning("%s failed to run install restart timer: %s", name_id(NAME(s)), strerror(-r));
+ service_enter_dead(s, false, false);
+}
+
+static void service_enter_signal(Service *s, ServiceState state, bool success);
+
+static void service_enter_stop_post(Service *s, bool success) {
+ int r;
+ assert(s);
+
+ if (!success)
+ s->failure = true;
+
+ if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
+
+ if ((r = service_spawn(s, s->control_command, true, false, &s->control_pid)) < 0)
+ goto fail;
+
+ service_set_state(s, SERVICE_STOP_POST);
+ } else
+ service_enter_dead(s, true, true);
+
+ return;
+
+fail:
+ log_warning("%s failed to run stop executable: %s", name_id(NAME(s)), strerror(-r));
+ service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
+}
+
+static void service_enter_signal(Service *s, ServiceState state, bool success) {
+ int r;
+ bool sent = false;
+
+ assert(s);
+
+ if (!success)
+ s->failure = true;
+
+ if (s->main_pid > 0 || s->control_pid > 0) {
+ int sig;
+
+ sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? SIGTERM : SIGKILL;
+
+ r = 0;
+ if (s->main_pid > 0) {
+ if (kill(s->main_pid, sig) < 0 && errno != ESRCH)
+ r = -errno;
+ else
+ sent = true;
+ }
+
+ if (s->control_pid > 0) {
+ if (kill(s->control_pid, sig) < 0 && errno != ESRCH)
+ r = -errno;
+ else
+ sent = true;
+ }
+
+ if (r < 0)
+ goto fail;
+
+ service_set_state(s, state);
+ } else
+ service_enter_dead(s, true, true);
+
+ return;
+
+fail:
+ log_warning("%s failed to kill processes: %s", name_id(NAME(s)), strerror(-r));
+
+ if (sent) {
+ s->failure = true;
+ service_set_state(s, state);
+ } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
+ service_enter_stop_post(s, false);
+ else
+ service_enter_dead(s, false, true);
+}
+
+static void service_enter_stop(Service *s, bool success) {
+ int r;
+ assert(s);
+
+ if (!success)
+ s->failure = true;
+
+ if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
+
+ if ((r = service_spawn(s, s->control_command, true, false, &s->control_pid)) < 0)
+ goto fail;
+
+ service_set_state(s, SERVICE_STOP);
+ } else
+ service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
+
+ return;
+
+fail:
+ log_warning("%s failed to run stop executable: %s", name_id(NAME(s)), strerror(-r));
+ service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
+}
+
+static void service_enter_start_post(Service *s) {
+ int r;
+ assert(s);
+
+ if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
+
+ if ((r = service_spawn(s, s->control_command, true, false, &s->control_pid)) < 0)
+ goto fail;
+
+ service_set_state(s, SERVICE_START_POST);
+ } else
+ service_set_state(s, SERVICE_RUNNING);
+
+ return;
+
+fail:
+ log_warning("%s failed to run start-post executable: %s", name_id(NAME(s)), strerror(-r));
+ service_enter_stop(s, false);
+}
+
+static void service_enter_start(Service *s) {
+ pid_t pid;
+ int r;
+
+ assert(s);
+
+ assert(s->exec_command[SERVICE_EXEC_START]);
+ assert(!s->exec_command[SERVICE_EXEC_START]->command_next);
+
+ if ((r = service_spawn(s, s->exec_command[SERVICE_EXEC_START], s->type == SERVICE_FORKING, true, &pid)) < 0)
+ goto fail;
+
+ if (s->type == SERVICE_SIMPLE) {
+ /* For simple services we immediately start
+ * the START_POST binaries. */
+
+ s->main_pid = pid;
+ s->main_pid_known = true;
+ service_enter_start_post(s);
+
+ } else if (s->type == SERVICE_FORKING) {
+
+ /* For forking services we wait until the start
+ * process exited. */
+
+ s->control_pid = pid;
+ s->control_command = s->exec_command[SERVICE_EXEC_START];
+ service_set_state(s, SERVICE_START);
+ } else
+ assert_not_reached("Unknown service type");
+
+ return;
+
+fail:
+ log_warning("%s failed to run start exectuable: %s", name_id(NAME(s)), strerror(-r));
+ service_enter_stop(s, false);
+}
+
+static void service_enter_start_pre(Service *s) {
+ int r;
+
+ assert(s);
+
+ if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
+
+ if ((r = service_spawn(s, s->control_command, true, false, &s->control_pid)) < 0)
+ goto fail;
+
+ service_set_state(s, SERVICE_START_PRE);
+ } else
+ service_enter_start(s);
+
+ return;
+
+fail:
+ log_warning("%s failed to run start-pre executable: %s", name_id(NAME(s)), strerror(-r));
+ service_enter_dead(s, false, true);
+}
+
+static void service_enter_restart(Service *s) {
+ int r;
+ assert(s);
+
+ if ((r = manager_add_job(NAME(s)->meta.manager, JOB_START, NAME(s), JOB_FAIL, false, NULL)) < 0)
+ goto fail;
+
+ log_debug("%s scheduled restart job.", name_id(NAME(s)));
+ service_enter_dead(s, true, false);
+ return;
+
+fail:
+
+ log_warning("%s failed to schedule restart job: %s", name_id(NAME(s)), strerror(-r));
+ service_enter_dead(s, false, false);
+}
+
+static void service_enter_reload(Service *s) {
+ int r;
+
+ assert(s);
+
+ if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
+
+ if ((r = service_spawn(s, s->control_command, true, false, &s->control_pid)) < 0)
+ goto fail;
+
+ service_set_state(s, SERVICE_RELOAD);
+ } else
+ service_set_state(s, SERVICE_RUNNING);
+
+ return;
+
+fail:
+ log_warning("%s failed to run reload executable: %s", name_id(NAME(s)), strerror(-r));
+ service_enter_stop(s, false);
+}
+
+static void service_run_next(Service *s, bool success) {
+ int r;
+
+ assert(s);
+ assert(s->control_command);
+ assert(s->control_command->command_next);
+
+ if (!success)
+ s->failure = true;
+
+ s->control_command = s->control_command->command_next;
+
+ if ((r = service_spawn(s, s->control_command, true, false, &s->control_pid)) < 0)
+ goto fail;
+
+ return;
+
+fail:
+ log_warning("%s failed to run spawn next executable: %s", name_id(NAME(s)), strerror(-r));
+
+ if (s->state == SERVICE_STOP)
+ service_enter_stop_post(s, false);
+ else if (s->state == SERVICE_STOP_POST)
+ service_enter_dead(s, false, true);
+ else
+ service_enter_stop(s, false);
}
static int service_start(Name *n) {
assert(s);
- /* We cannot fulfill this request right now */
- if (s->state == SERVICE_STOP_PRE ||
- s->state == SERVICE_STOP ||
- s->state == SERVICE_SIGTERM ||
- s->state == SERVICE_SIGKILL ||
- s->state == SERVICE_STOP_POST)
+ /* We cannot fulfill this request right now, try again later
+ * please! */
+ if (s->state == SERVICE_STOP ||
+ s->state == SERVICE_STOP_SIGTERM ||
+ s->state == SERVICE_STOP_SIGKILL ||
+ s->state == SERVICE_STOP_POST ||
+ s->state == SERVICE_FINAL_SIGTERM ||
+ s->state == SERVICE_FINAL_SIGKILL)
return -EAGAIN;
- assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTAINANCE);
+ /* Already on it! */
+ if (s->state == SERVICE_START_PRE ||
+ s->state == SERVICE_START ||
+ s->state == SERVICE_START_POST)
+ return 0;
+
+ assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTAINANCE || s->state == SERVICE_AUTO_RESTART);
- return service_set_state(s, SERVICE_START_PRE);
+ s->failure = false;
+ s->main_pid_known = false;
+
+ service_enter_start_pre(s);
+ return 0;
}
static int service_stop(Name *n) {
assert(s);
+ if (s->state == SERVICE_START_PRE ||
+ s->state == SERVICE_START ||
+ s->state == SERVICE_START_POST ||
+ s->state == SERVICE_RELOAD)
+ return -EAGAIN;
+
+ if (s->state == SERVICE_AUTO_RESTART) {
+ service_set_state(s, SERVICE_DEAD);
+ return 0;
+ }
+
+ assert(s->state == SERVICE_RUNNING);
+ service_enter_stop(s, true);
return 0;
}
static int service_reload(Name *n) {
+ Service *s = SERVICE(n);
+
+ assert(s);
+
+ assert(s->state == SERVICE_RUNNING);
+
+ service_enter_reload(s);
return 0;
}
+static bool service_can_reload(Name *n) {
+ Service *s = SERVICE(n);
+
+ assert(s);
+
+ return !!s->exec_command[SERVICE_EXEC_RELOAD];
+}
+
static NameActiveState service_active_state(Name *n) {
+ assert(n);
- static const NameActiveState table[_SERVICE_STATE_MAX] = {
- [SERVICE_DEAD] = NAME_INACTIVE,
- [SERVICE_START_PRE] = NAME_ACTIVATING,
- [SERVICE_START] = NAME_ACTIVATING,
- [SERVICE_START_POST] = NAME_ACTIVATING,
- [SERVICE_RUNNING] = NAME_ACTIVE,
- [SERVICE_RELOAD_PRE] = NAME_ACTIVE_RELOADING,
- [SERVICE_RELOAD] = NAME_ACTIVE_RELOADING,
- [SERVICE_RELOAD_POST] = NAME_ACTIVE_RELOADING,
- [SERVICE_STOP_PRE] = NAME_DEACTIVATING,
- [SERVICE_STOP] = NAME_DEACTIVATING,
- [SERVICE_SIGTERM] = NAME_DEACTIVATING,
- [SERVICE_SIGKILL] = NAME_DEACTIVATING,
- [SERVICE_STOP_POST] = NAME_DEACTIVATING,
- [SERVICE_MAINTAINANCE] = NAME_INACTIVE,
- };
+ return state_table[SERVICE(n)->state];
+}
+
+static int main_pid_good(Service *s) {
+ assert(s);
+
+ /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
+ * don't know */
+
+ /* If we know the pid file, then lets just check if it is
+ * still valid */
+ if (s->main_pid_known)
+ return s->main_pid > 0;
+
+ /* We don't know the pid */
+ return -1;
+}
+
+static bool control_pid_good(Service *s) {
+ assert(s);
- return table[SERVICE(n)->state];
+ return s->control_pid > 0;
}
-static void service_free_hook(Name *n) {
+static void service_sigchld_event(Name *n, pid_t pid, int code, int status) {
Service *s = SERVICE(n);
- unsigned c;
+ bool success;
assert(s);
+ assert(pid >= 0);
+
+ success = code == CLD_EXITED || status == 0;
+ s->failure = s->failure || !success;
+
+ if (s->main_pid == pid) {
+
+ exec_status_fill(&s->main_exec_status, pid, code, status);
+ s->main_pid = 0;
+
+ if (s->type == SERVICE_SIMPLE) {
+ assert(s->exec_command[SERVICE_EXEC_START]);
+ s->exec_command[SERVICE_EXEC_START]->exec_status = s->main_exec_status;
+ }
+
+ log_debug("%s: main process exited, code=%s status=%i", name_id(n), sigchld_code(code), status);
+
+ /* The service exited, so the service is officially
+ * gone. */
+
+ switch (s->state) {
+
+ case SERVICE_START_POST:
+ case SERVICE_RELOAD:
+ case SERVICE_STOP:
+ /* Need to wait until the operation is
+ * done */
+ break;
- exec_context_free(&s->exec_context);
+ case SERVICE_RUNNING:
+ service_enter_stop(s, success);
+ break;
- for (c = 0; c < _SERVICE_EXEC_MAX; c++)
- exec_command_free_list(s->exec_command[c]);
+ case SERVICE_STOP_SIGTERM:
+ case SERVICE_STOP_SIGKILL:
- if (s->socket)
- s->socket->service = NULL;
+ if (!control_pid_good(s))
+ service_enter_stop_post(s, success);
+
+ /* If there is still a control process, wait for that first */
+ break;
+
+ default:
+ assert_not_reached("Uh, main process died at wrong time.");
+ }
+
+ } else if (s->control_pid == pid) {
+ assert(s->control_command);
+
+ exec_status_fill(&s->control_command->exec_status, pid, code, status);
+ s->control_pid = 0;
+
+ log_debug("%s: control process exited, code=%s status=%i", name_id(n), sigchld_code(code), status);
+
+ /* If we are shutting things down anyway we
+ * don't care about failing commands. */
+
+ if (s->control_command->command_next &&
+ (success || (s->state == SERVICE_EXEC_STOP || s->state == SERVICE_EXEC_STOP_POST)))
+
+ /* There is another command to *
+ * execute, so let's do that. */
+
+ service_run_next(s, success);
+
+ else {
+ /* No further commands for this step, so let's
+ * figure out what to do next */
+
+ switch (s->state) {
+
+ case SERVICE_START_PRE:
+ if (success)
+ service_enter_start(s);
+ else
+ service_enter_stop(s, false);
+ break;
+
+ case SERVICE_START:
+ assert(s->type == SERVICE_FORKING);
+
+ /* Let's try to load the pid
+ * file here if we can. We
+ * ignore the return value,
+ * since the PID file might
+ * actually be created by a
+ * START_POST script */
+
+ if (success) {
+ if (s->pid_file)
+ service_load_pid_file(s);
+
+ service_enter_start_post(s);
+ } else
+ service_enter_stop(s, false);
+
+ break;
+
+ case SERVICE_START_POST:
+ if (success && s->pid_file && !s->main_pid_known) {
+ int r;
+
+ /* Hmm, let's see if we can
+ * load the pid now after the
+ * start-post scripts got
+ * executed. */
+
+ if ((r = service_load_pid_file(s)) < 0)
+ log_warning("%s: failed to load PID file %s: %s", name_id(NAME(s)), s->pid_file, strerror(-r));
+ }
+
+ /* Fall through */
+
+ case SERVICE_RELOAD:
+ if (success) {
+ if (main_pid_good(s) != 0)
+ service_set_state(s, SERVICE_RUNNING);
+ else
+ service_enter_stop(s, true);
+ } else
+ service_enter_stop(s, false);
+
+ break;
+
+ case SERVICE_STOP:
+ if (main_pid_good(s) > 0)
+ /* Still not dead and we know the PID? Let's go hunting. */
+ service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
+ else
+ service_enter_stop_post(s, success);
+ break;
+
+ case SERVICE_STOP_SIGTERM:
+ case SERVICE_STOP_SIGKILL:
+ if (main_pid_good(s) <= 0)
+ service_enter_stop_post(s, success);
+
+ /* If there is still a service
+ * process around, wait until
+ * that one quit, too */
+ break;
+
+ case SERVICE_STOP_POST:
+ case SERVICE_FINAL_SIGTERM:
+ case SERVICE_FINAL_SIGKILL:
+ service_enter_dead(s, success, true);
+ break;
+
+ default:
+ assert_not_reached("Uh, control process died at wrong time.");
+ }
+ }
+ } else
+ assert_not_reached("Got SIGCHLD for unkown PID");
+}
+
+static void service_timer_event(Name *n, int id, uint64_t elapsed) {
+ Service *s = SERVICE(n);
+
+ assert(s);
+ assert(elapsed == 1);
+
+ assert(s->timer_id == id);
+
+ switch (s->state) {
+
+ case SERVICE_START_PRE:
+ case SERVICE_START:
+ case SERVICE_START_POST:
+ case SERVICE_RELOAD:
+ log_warning("%s operation timed out. Stopping.", name_id(n));
+ service_enter_stop(s, false);
+ break;
+
+ case SERVICE_STOP:
+ log_warning("%s stopping timed out. Terminating.", name_id(n));
+ service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
+ break;
+
+ case SERVICE_STOP_SIGTERM:
+ log_warning("%s stopping timed out. Killing.", name_id(n));
+ service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
+ break;
+
+ case SERVICE_STOP_SIGKILL:
+ /* Uh, wie sent a SIGKILL and it is still not gone?
+ * Must be something we cannot kill, so let's just be
+ * weirded out and continue */
+
+ log_warning("%s still around after SIGKILL. Ignoring.", name_id(n));
+ service_enter_stop_post(s, false);
+ break;
+
+ case SERVICE_STOP_POST:
+ log_warning("%s stopping timed out (2). Terminating.", name_id(n));
+ service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
+ break;
+
+ case SERVICE_FINAL_SIGTERM:
+ log_warning("%s stopping timed out (2). Killing.", name_id(n));
+ service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
+ break;
+
+ case SERVICE_FINAL_SIGKILL:
+ log_warning("%s still around after SIGKILL (2). Entering maintainance mode.", name_id(n));
+ service_enter_dead(s, false, true);
+ break;
+
+ case SERVICE_AUTO_RESTART:
+ log_debug("%s holdoff time over, scheduling restart.", name_id(n));
+ service_enter_restart(s);
+ break;
+
+ default:
+ assert_not_reached("Timeout at wrong time.");
+ }
}
const NameVTable service_vtable = {
.suffix = ".service",
- .load = service_load,
+ .init = service_init,
+ .done = service_done,
+
.dump = service_dump,
.start = service_start,
.stop = service_stop,
.reload = service_reload,
+ .can_reload = service_can_reload,
+
.active_state = service_active_state,
- .free_hook = service_free_hook
+ .sigchld_event = service_sigchld_event,
+ .timer_event = service_timer_event,
};
~ianmdlvl / elogind.git / blobdiff