/*-*- Mode: C; c-basic-offset: 8 -*-*/
+/***
+ This file is part of systemd.
+
+ Copyright 2010 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ systemd is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
#include <errno.h>
#include <signal.h>
#include "load-dropin.h"
#include "log.h"
-static const UnitActiveState state_table[_SERVICE_STATE_MAX] = {
+static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
[SERVICE_DEAD] = UNIT_INACTIVE,
[SERVICE_START_PRE] = UNIT_ACTIVATING,
[SERVICE_START] = UNIT_ACTIVATING,
s->control_pid = 0;
}
- unit_unwatch_timer(u, &s->timer_id);
+ unit_unwatch_timer(u, &s->timer_watch);
}
static int service_load_sysv(Service *s) {
exec_context_init(&s->exec_context);
- s->timer_id = -1;
+ s->timer_watch.type = WATCH_INVALID;
s->state = SERVICE_DEAD;
- /* Load a .service file */
- r = unit_load_fragment(u);
-
- /* Load a classic init script as a fallback */
- if (r == -ENOENT)
- r = service_load_sysv(s);
+ RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5);
- if (r < 0) {
+ /* Load a .service file */
+ if ((r = unit_load_fragment(u)) < 0) {
service_done(u);
return r;
}
+ /* Load a classic init script as a fallback, if we couldn*t find anything */
+ if (r == 0)
+ if ((r = service_load_sysv(s)) <= 0) {
+ service_done(u);
+ return r < 0 ? r : -ENOENT;
+ }
+
/* Load dropin directory data */
if ((r = unit_load_dropin(u)) < 0) {
service_done(u);
static void service_dump(Unit *u, FILE *f, const char *prefix) {
- static const char* const state_table[_SERVICE_STATE_MAX] = {
- [SERVICE_DEAD] = "dead",
- [SERVICE_START_PRE] = "start-pre",
- [SERVICE_START] = "start",
- [SERVICE_START_POST] = "post",
- [SERVICE_RUNNING] = "running",
- [SERVICE_RELOAD] = "reload",
- [SERVICE_STOP] = "stop",
- [SERVICE_STOP_SIGTERM] = "stop-sigterm",
- [SERVICE_STOP_SIGKILL] = "stop-sigkill",
- [SERVICE_STOP_POST] = "stop-post",
- [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] = "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(u);
- char *prefix2;
+ const char *prefix2;
+ char *p2;
assert(s);
- prefix2 = strappend(prefix, "\t");
- if (!prefix2)
- prefix2 = "";
+ p2 = strappend(prefix, "\t");
+ prefix2 = p2 ? p2 : prefix;
fprintf(f,
"%sService State: %s\n",
- prefix, state_table[s->state]);
+ prefix, service_state_to_string(s->state));
if (s->pid_file)
fprintf(f,
continue;
fprintf(f, "%sā %s:\n",
- prefix, command_table[c]);
+ prefix, service_exec_command_to_string(c));
exec_command_dump_list(s->exec_command[c], f, prefix2);
}
- free(prefix2);
+ free(p2);
}
static int service_load_pid_file(Service *s) {
return 0;
}
+static int service_get_sockets(Service *s, Set **_set) {
+ Set *set;
+ Iterator i;
+ char *t;
+ int r;
+
+ assert(s);
+ assert(_set);
+
+ /* Collects all Socket objects that belong to this
+ * service. Note that a service might have multiple sockets
+ * via multiple names. */
+
+ if (!(set = set_new(NULL, NULL)))
+ return -ENOMEM;
+
+ SET_FOREACH(t, UNIT(s)->meta.names, i) {
+ char *k;
+ Unit *p;
+
+ /* Look for all socket objects that go by any of our
+ * units and collect their fds */
+
+ if (!(k = unit_name_change_suffix(t, ".socket"))) {
+ r = -ENOMEM;
+ goto fail;
+ }
+
+ p = manager_get_unit(UNIT(s)->meta.manager, k);
+ free(k);
+
+ if (!p) continue;
+
+ if ((r = set_put(set, p)) < 0)
+ goto fail;
+ }
+
+ *_set = set;
+ return 0;
+
+fail:
+ set_free(set);
+ return r;
+}
+
+
+static int service_notify_sockets(Service *s) {
+ Iterator i;
+ Set *set;
+ Socket *sock;
+ int r;
+
+ assert(s);
+
+ /* Notifies all our sockets when we die */
+
+ if ((r = service_get_sockets(s, &set)) < 0)
+ return r;
+
+ SET_FOREACH(sock, set, i)
+ socket_notify_service_dead(sock);
+
+ set_free(set);
+
+ return 0;
+}
+
static void service_set_state(Service *s, ServiceState state) {
ServiceState old_state;
assert(s);
state != SERVICE_FINAL_SIGTERM &&
state != SERVICE_FINAL_SIGKILL &&
state != SERVICE_AUTO_RESTART)
- unit_unwatch_timer(UNIT(s), &s->timer_id);
+ unit_unwatch_timer(UNIT(s), &s->timer_watch);
- if (state != SERVICE_START_POST &&
+ if (state != SERVICE_START &&
+ 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) {
+ if (s->main_pid > 0) {
unit_unwatch_pid(UNIT(s), s->main_pid);
s->main_pid = 0;
}
state != SERVICE_STOP_POST &&
state != SERVICE_FINAL_SIGTERM &&
state != SERVICE_FINAL_SIGKILL)
- if (s->control_pid >= 0) {
+ if (s->control_pid > 0) {
unit_unwatch_pid(UNIT(s), s->control_pid);
s->control_pid = 0;
}
state != SERVICE_STOP_POST)
s->control_command = NULL;
- unit_notify(UNIT(s), state_table[old_state], state_table[s->state]);
+ if (state == SERVICE_DEAD ||
+ 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_MAINTAINANCE ||
+ state == SERVICE_AUTO_RESTART)
+ service_notify_sockets(s);
+
+ log_debug("%s changed %s ā %s", unit_id(UNIT(s)), service_state_to_string(old_state), service_state_to_string(state));
+
+ unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state]);
}
static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
int r;
int *rfds = NULL;
unsigned rn_fds = 0;
- char *t;
+ Set *set;
+ Socket *sock;
assert(s);
assert(fds);
assert(n_fds);
- SET_FOREACH(t, UNIT(s)->meta.names, i) {
- char *k;
- Unit *p;
+ if ((r = service_get_sockets(s, &set)) < 0)
+ return r;
+
+ SET_FOREACH(sock, set, i) {
int *cfds;
unsigned cn_fds;
- /* Look for all socket objects that go by any of our
- * units and collect their fds */
-
- if (!(k = unit_name_change_suffix(t, ".socket"))) {
- r = -ENOMEM;
- goto fail;
- }
-
- p = manager_get_unit(UNIT(s)->meta.manager, k);
- free(k);
-
- if ((r = socket_collect_fds(SOCKET(p), &cfds, &cn_fds)) < 0)
+ if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
goto fail;
if (!cfds)
*fds = rfds;
*n_fds = rn_fds;
+
+ set_free(set);
+
return 0;
fail:
+ set_free(set);
free(rfds);
+
return r;
}
goto fail;
if (timeout) {
- if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_id)) < 0)
+ if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
goto fail;
} else
- unit_unwatch_timer(UNIT(s), &s->timer_id);
+ unit_unwatch_timer(UNIT(s), &s->timer_watch);
if ((r = exec_spawn(c, &s->exec_context, fds, n_fds, &pid)) < 0)
goto fail;
free(fds);
if (timeout)
- unit_unwatch_timer(UNIT(s), &s->timer_id);
+ unit_unwatch_timer(UNIT(s), &s->timer_watch);
return r;
}
(s->restart == SERVICE_RESTART_ALWAYS ||
(s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure))) {
- if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_id)) < 0)
+ if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
goto fail;
service_set_state(s, SERVICE_AUTO_RESTART);
if (!success)
s->failure = true;
- if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
-
+ 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_set_state(s, SERVICE_STOP_POST);
+
+ if (!s->control_command)
service_enter_dead(s, true, true);
return;
if (r < 0)
goto fail;
+ }
- service_set_state(s, state);
- } else
+ service_set_state(s, state);
+
+ if (s->main_pid <= 0 && s->control_pid <= 0)
service_enter_dead(s, true, true);
return;
if (!success)
s->failure = true;
- if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
-
+ 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_set_state(s, SERVICE_STOP);
+
+ if (!s->control_command)
service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
return;
int r;
assert(s);
- if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
-
+ 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_START_POST);
+
+ if (!s->control_command)
service_set_state(s, SERVICE_RUNNING);
return;
if ((r = service_spawn(s, s->exec_command[SERVICE_EXEC_START], s->type == SERVICE_FORKING, true, &pid)) < 0)
goto fail;
+ service_set_state(s, SERVICE_START);
+
if (s->type == SERVICE_SIMPLE) {
/* For simple services we immediately start
* the START_POST binaries. */
s->control_pid = pid;
s->control_command = s->exec_command[SERVICE_EXEC_START];
- service_set_state(s, SERVICE_START);
+ } else if (s->type == SERVICE_FINISH) {
+
+ /* For finishing services we wait until the start
+ * process exited, too, but it is our main process. */
+
+ s->main_pid = pid;
+ s->control_command = s->exec_command[SERVICE_EXEC_START];
} else
assert_not_reached("Unknown service type");
assert(s);
- if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
-
+ 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_set_state(s, SERVICE_START_PRE);
+
+ if (!s->control_command)
service_enter_start(s);
return;
assert(s);
- if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
-
+ 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_RELOAD);
+
+ if (!s->control_command)
service_set_state(s, SERVICE_RUNNING);
return;
assert(s->state == SERVICE_DEAD || s->state == SERVICE_MAINTAINANCE || s->state == SERVICE_AUTO_RESTART);
+ /* Make sure we don't enter a busy loop of some kind. */
+ if (!ratelimit_test(&s->ratelimit)) {
+ log_warning("%s start request repeated too quickly, refusing to start.", unit_id(u));
+ return -EAGAIN;
+ }
+
s->failure = false;
s->main_pid_known = false;
static UnitActiveState service_active_state(Unit *u) {
assert(u);
- return state_table[SERVICE(u)->state];
+ return state_translation_table[SERVICE(u)->state];
}
static int main_pid_good(Service *s) {
assert(s);
assert(pid >= 0);
- success = code == CLD_EXITED || status == 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) {
+ if (s->type == SERVICE_SIMPLE || s->type == SERVICE_FINISH) {
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", unit_id(u), sigchld_code(code), status);
+ log_debug("%s: main process exited, code=%s status=%i", unit_id(u), sigchld_code_to_string(code), status);
/* The service exited, so the service is officially
* gone. */
* done */
break;
+ case SERVICE_START:
+ assert(s->type == SERVICE_FINISH);
+
+ /* This was our main goal, so let's go on */
+ if (success)
+ service_enter_start_post(s);
+ else
+ service_enter_stop(s, false);
+ break;
+
case SERVICE_RUNNING:
service_enter_stop(s, success);
break;
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", unit_id(u), sigchld_code(code), status);
+ log_debug("%s: control process exited, code=%s status=%i", unit_id(u), sigchld_code_to_string(code), status);
/* If we are shutting things down anyway we
* don't care about failing commands. */
/* No further commands for this step, so let's
* figure out what to do next */
+ log_debug("%s got final SIGCHLD for state %s", unit_id(u), service_state_to_string(s->state));
+
switch (s->state) {
case SERVICE_START_PRE:
assert_not_reached("Got SIGCHLD for unkown PID");
}
-static void service_timer_event(Unit *u, int id, uint64_t elapsed) {
+static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
Service *s = SERVICE(u);
assert(s);
assert(elapsed == 1);
- assert(s->timer_id == id);
+ assert(w == &s->timer_watch);
switch (s->state) {
}
}
+static const char* const service_state_table[_SERVICE_STATE_MAX] = {
+ [SERVICE_DEAD] = "dead",
+ [SERVICE_START_PRE] = "start-pre",
+ [SERVICE_START] = "start",
+ [SERVICE_START_POST] = "start-post",
+ [SERVICE_RUNNING] = "running",
+ [SERVICE_RELOAD] = "reload",
+ [SERVICE_STOP] = "stop",
+ [SERVICE_STOP_SIGTERM] = "stop-sigterm",
+ [SERVICE_STOP_SIGKILL] = "stop-sigkill",
+ [SERVICE_STOP_POST] = "stop-post",
+ [SERVICE_FINAL_SIGTERM] = "final-sigterm",
+ [SERVICE_FINAL_SIGKILL] = "final-sigkill",
+ [SERVICE_MAINTAINANCE] = "maintainance",
+ [SERVICE_AUTO_RESTART] = "auto-restart",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
+
+static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
+ [SERVICE_ONCE] = "once",
+ [SERVICE_RESTART_ON_SUCCESS] = "restart-on-success",
+ [SERVICE_RESTART_ALWAYS] = "restart-on-failure",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
+
+static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
+ [SERVICE_FORKING] = "forking",
+ [SERVICE_SIMPLE] = "simple",
+ [SERVICE_FINISH] = "finish"
+};
+
+DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
+
+static const char* const service_exec_command_table[_SERVICE_EXEC_MAX] = {
+ [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",
+};
+
+DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
+
const UnitVTable service_vtable = {
.suffix = ".service",
~ianmdlvl / elogind.git / blobdiff