1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
4 This file is part of systemd.
6 Copyright 2010 Lennart Poettering
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
29 #include "load-fragment.h"
30 #include "load-dropin.h"
33 #include "unit-name.h"
34 #include "dbus-service.h"
36 #include "bus-errors.h"
37 #include "exit-status.h"
41 #ifdef HAVE_SYSV_COMPAT
43 #define DEFAULT_SYSV_TIMEOUT_USEC (5*USEC_PER_MINUTE)
45 typedef enum RunlevelType {
54 const RunlevelType type;
56 /* Standard SysV runlevels for start-up */
57 { "rc1.d", SPECIAL_RESCUE_TARGET, RUNLEVEL_UP },
58 { "rc2.d", SPECIAL_RUNLEVEL2_TARGET, RUNLEVEL_UP },
59 { "rc3.d", SPECIAL_RUNLEVEL3_TARGET, RUNLEVEL_UP },
60 { "rc4.d", SPECIAL_RUNLEVEL4_TARGET, RUNLEVEL_UP },
61 { "rc5.d", SPECIAL_RUNLEVEL5_TARGET, RUNLEVEL_UP },
64 /* SUSE style boot.d */
65 { "boot.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT },
68 #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_FRUGALWARE) || defined(TARGET_ANGSTROM)
69 /* Debian style rcS.d */
70 { "rcS.d", SPECIAL_SYSINIT_TARGET, RUNLEVEL_SYSINIT },
73 /* Standard SysV runlevels for shutdown */
74 { "rc0.d", SPECIAL_POWEROFF_TARGET, RUNLEVEL_DOWN },
75 { "rc6.d", SPECIAL_REBOOT_TARGET, RUNLEVEL_DOWN }
77 /* Note that the order here matters, as we read the
78 directories in this order, and we want to make sure that
79 sysv_start_priority is known when we first load the
80 unit. And that value we only know from S links. Hence
81 UP/SYSINIT must be read before DOWN */
84 #define RUNLEVELS_UP "12345"
85 /* #define RUNLEVELS_DOWN "06" */
86 /* #define RUNLEVELS_BOOT "bBsS" */
89 static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
90 [SERVICE_DEAD] = UNIT_INACTIVE,
91 [SERVICE_START_PRE] = UNIT_ACTIVATING,
92 [SERVICE_START] = UNIT_ACTIVATING,
93 [SERVICE_START_POST] = UNIT_ACTIVATING,
94 [SERVICE_RUNNING] = UNIT_ACTIVE,
95 [SERVICE_EXITED] = UNIT_ACTIVE,
96 [SERVICE_RELOAD] = UNIT_RELOADING,
97 [SERVICE_STOP] = UNIT_DEACTIVATING,
98 [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
99 [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
100 [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
101 [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
102 [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
103 [SERVICE_FAILED] = UNIT_FAILED,
104 [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING
107 static void service_init(Unit *u) {
108 Service *s = SERVICE(u);
111 assert(u->meta.load_state == UNIT_STUB);
113 s->timeout_usec = DEFAULT_TIMEOUT_USEC;
114 s->restart_usec = DEFAULT_RESTART_USEC;
115 s->timer_watch.type = WATCH_INVALID;
116 #ifdef HAVE_SYSV_COMPAT
117 s->sysv_start_priority = -1;
118 s->sysv_start_priority_from_rcnd = -1;
121 s->guess_main_pid = true;
123 exec_context_init(&s->exec_context);
124 s->exec_context.std_output = u->meta.manager->default_std_output;
125 s->exec_context.std_error = u->meta.manager->default_std_error;
127 RATELIMIT_INIT(s->ratelimit, 10*USEC_PER_SEC, 5);
129 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
132 static void service_unwatch_control_pid(Service *s) {
135 if (s->control_pid <= 0)
138 unit_unwatch_pid(UNIT(s), s->control_pid);
142 static void service_unwatch_main_pid(Service *s) {
145 if (s->main_pid <= 0)
148 unit_unwatch_pid(UNIT(s), s->main_pid);
152 static int service_set_main_pid(Service *s, pid_t pid) {
164 s->main_pid_known = true;
166 if (get_parent_of_pid(pid, &ppid) >= 0 && ppid != getpid()) {
167 log_warning("%s: Supervising process %lu which is not our child. We'll most likely not notice when it exits.",
168 s->meta.id, (unsigned long) pid);
170 s->main_pid_alien = true;
172 s->main_pid_alien = false;
174 exec_status_start(&s->main_exec_status, pid);
179 static void service_close_socket_fd(Service *s) {
182 if (s->socket_fd < 0)
185 close_nointr_nofail(s->socket_fd);
189 static void service_connection_unref(Service *s) {
192 if (!s->accept_socket)
195 socket_connection_unref(s->accept_socket);
196 s->accept_socket = NULL;
199 static void service_done(Unit *u) {
200 Service *s = SERVICE(u);
207 #ifdef HAVE_SYSV_COMPAT
211 free(s->sysv_runlevels);
212 s->sysv_runlevels = NULL;
215 free(s->status_text);
216 s->status_text = NULL;
218 exec_context_done(&s->exec_context);
219 exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
220 s->control_command = NULL;
221 s->main_command = NULL;
223 /* This will leak a process, but at least no memory or any of
225 service_unwatch_main_pid(s);
226 service_unwatch_control_pid(s);
229 unit_unwatch_bus_name(UNIT(u), s->bus_name);
234 service_close_socket_fd(s);
235 service_connection_unref(s);
237 set_free(s->configured_sockets);
239 unit_unwatch_timer(u, &s->timer_watch);
242 #ifdef HAVE_SYSV_COMPAT
243 static char *sysv_translate_name(const char *name) {
246 if (!(r = new(char, strlen(name) + sizeof(".service"))))
249 #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
250 if (endswith(name, ".sh"))
251 /* Drop Debian-style .sh suffix */
252 strcpy(stpcpy(r, name) - 3, ".service");
255 if (startswith(name, "boot."))
256 /* Drop SuSE-style boot. prefix */
257 strcpy(stpcpy(r, name + 5), ".service");
259 #ifdef TARGET_FRUGALWARE
260 if (startswith(name, "rc."))
261 /* Drop Frugalware-style rc. prefix */
262 strcpy(stpcpy(r, name + 3), ".service");
265 /* Normal init scripts */
266 strcpy(stpcpy(r, name), ".service");
271 static int sysv_translate_facility(const char *name, const char *filename, char **_r) {
273 /* We silently ignore the $ prefix here. According to the LSB
274 * spec it simply indicates whether something is a
275 * standardized name or a distribution-specific one. Since we
276 * just follow what already exists and do not introduce new
277 * uses or names we don't care who introduced a new name. */
279 static const char * const table[] = {
280 /* LSB defined facilities */
281 "local_fs", SPECIAL_LOCAL_FS_TARGET,
282 #ifndef TARGET_MANDRIVA
283 /* Due to unfortunate name selection in Mandriva,
284 * $network is provided by network-up which is ordered
285 * after network which actually starts interfaces.
286 * To break the loop, just ignore it */
287 "network", SPECIAL_NETWORK_TARGET,
289 "named", SPECIAL_NSS_LOOKUP_TARGET,
290 "portmap", SPECIAL_RPCBIND_TARGET,
291 "remote_fs", SPECIAL_REMOTE_FS_TARGET,
292 "syslog", SPECIAL_SYSLOG_TARGET,
293 "time", SPECIAL_TIME_SYNC_TARGET,
295 /* common extensions */
296 "mail-transfer-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
297 "x-display-manager", SPECIAL_DISPLAY_MANAGER_SERVICE,
300 #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
301 "mail-transport-agent", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
305 "MTA", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
306 "smtpdaemon", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
307 "httpd", SPECIAL_HTTP_DAEMON_TARGET,
311 "smtp", SPECIAL_MAIL_TRANSFER_AGENT_TARGET,
322 n = *name == '$' ? name + 1 : name;
324 for (i = 0; i < ELEMENTSOF(table); i += 2) {
326 if (!streq(table[i], n))
332 if (!(r = strdup(table[i+1])))
338 /* If we don't know this name, fallback heuristics to figure
339 * out whether something is a target or a service alias. */
342 if (!unit_prefix_is_valid(n))
345 /* Facilities starting with $ are most likely targets */
346 r = unit_name_build(n, NULL, ".target");
347 } else if (filename && streq(name, filename))
348 /* Names equaling the file name of the services are redundant */
351 /* Everything else we assume to be normal service names */
352 r = sysv_translate_name(n);
363 static int sysv_fix_order(Service *s) {
369 if (s->sysv_start_priority < 0)
372 /* For each pair of services where at least one lacks a LSB
373 * header, we use the start priority value to order things. */
375 LIST_FOREACH(units_by_type, other, s->meta.manager->units_by_type[UNIT_SERVICE]) {
378 bool special_s, special_t;
380 t = (Service*) other;
385 if (t->meta.load_state != UNIT_LOADED)
388 if (t->sysv_start_priority < 0)
391 /* If both units have modern headers we don't care
392 * about the priorities */
393 if ((s->meta.fragment_path || s->sysv_has_lsb) &&
394 (t->meta.fragment_path || t->sysv_has_lsb))
397 special_s = s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels);
398 special_t = t->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, t->sysv_runlevels);
400 if (special_t && !special_s)
402 else if (special_s && !special_t)
404 else if (t->sysv_start_priority < s->sysv_start_priority)
406 else if (t->sysv_start_priority > s->sysv_start_priority)
411 /* FIXME: Maybe we should compare the name here lexicographically? */
413 if ((r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
420 static ExecCommand *exec_command_new(const char *path, const char *arg1) {
423 if (!(c = new0(ExecCommand, 1)))
426 if (!(c->path = strdup(path))) {
431 if (!(c->argv = strv_new(path, arg1, NULL))) {
440 static int sysv_exec_commands(Service *s) {
444 assert(s->sysv_path);
446 if (!(c = exec_command_new(s->sysv_path, "start")))
448 exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
450 if (!(c = exec_command_new(s->sysv_path, "stop")))
452 exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
454 if (!(c = exec_command_new(s->sysv_path, "reload")))
456 exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
461 static int service_load_sysv_path(Service *s, const char *path) {
472 char *short_description = NULL, *long_description = NULL, *chkconfig_description = NULL, *description;
480 if (!(f = fopen(path, "re"))) {
481 r = errno == ENOENT ? 0 : -errno;
486 if (fstat(fileno(f), &st) < 0) {
492 if (!(s->sysv_path = strdup(path))) {
497 s->sysv_mtime = timespec_load(&st.st_mtim);
499 if (null_or_empty(&st)) {
500 u->meta.load_state = UNIT_MASKED;
506 char l[LINE_MAX], *t;
508 if (!fgets(l, sizeof(l), f)) {
513 log_error("Failed to read configuration file '%s': %s", path, strerror(-r));
523 if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
525 s->sysv_has_lsb = true;
529 if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
535 t += strspn(t, WHITESPACE);
537 if (state == NORMAL) {
539 /* Try to parse Red Hat style chkconfig headers */
541 if (startswith_no_case(t, "chkconfig:")) {
543 char runlevels[16], *k;
547 if (sscanf(t+10, "%15s %i %*i",
549 &start_priority) != 2) {
551 log_warning("[%s:%u] Failed to parse chkconfig line. Ignoring.", path, line);
555 /* A start priority gathered from the
556 * symlink farms is preferred over the
557 * data from the LSB header. */
558 if (start_priority < 0 || start_priority > 99)
559 log_warning("[%s:%u] Start priority out of range. Ignoring.", path, line);
561 s->sysv_start_priority = start_priority;
563 char_array_0(runlevels);
564 k = delete_chars(runlevels, WHITESPACE "-");
569 if (!(d = strdup(k))) {
574 free(s->sysv_runlevels);
575 s->sysv_runlevels = d;
578 } else if (startswith_no_case(t, "description:")) {
580 size_t k = strlen(t);
584 if (t[k-1] == '\\') {
589 if ((j = strstrip(t+12)) && *j) {
590 if (!(d = strdup(j))) {
597 free(chkconfig_description);
598 chkconfig_description = d;
600 } else if (startswith_no_case(t, "pidfile:")) {
607 if (!path_is_absolute(fn)) {
608 log_warning("[%s:%u] PID file not absolute. Ignoring.", path, line);
612 if (!(fn = strdup(fn))) {
621 } else if (state == DESCRIPTION) {
623 /* Try to parse Red Hat style description
626 size_t k = strlen(t);
634 if ((j = strstrip(t)) && *j) {
637 if (chkconfig_description)
638 d = join(chkconfig_description, " ", j, NULL);
647 free(chkconfig_description);
648 chkconfig_description = d;
651 } else if (state == LSB || state == LSB_DESCRIPTION) {
653 if (startswith_no_case(t, "Provides:")) {
659 FOREACH_WORD_QUOTED(w, z, t+9, i) {
662 if (!(n = strndup(w, z))) {
667 r = sysv_translate_facility(n, file_name_from_path(path), &m);
676 if (unit_name_to_type(m) == UNIT_SERVICE)
677 r = unit_add_name(u, m);
684 * indication that the
686 * now available. This
689 * targets do NOT pull
692 r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, UNIT_WANTS, m, NULL, true);
695 log_error("[%s:%u] Failed to add LSB Provides name %s, ignoring: %s", path, line, m, strerror(-r));
700 } else if (startswith_no_case(t, "Required-Start:") ||
701 startswith_no_case(t, "Should-Start:") ||
702 startswith_no_case(t, "X-Start-Before:") ||
703 startswith_no_case(t, "X-Start-After:")) {
709 FOREACH_WORD_QUOTED(w, z, strchr(t, ':')+1, i) {
712 if (!(n = strndup(w, z))) {
717 r = sysv_translate_facility(n, file_name_from_path(path), &m);
720 log_error("[%s:%u] Failed to translate LSB dependency %s, ignoring: %s", path, line, n, strerror(-r));
730 r = unit_add_dependency_by_name(u, startswith_no_case(t, "X-Start-Before:") ? UNIT_BEFORE : UNIT_AFTER, m, NULL, true);
733 log_error("[%s:%u] Failed to add dependency on %s, ignoring: %s", path, line, m, strerror(-r));
737 } else if (startswith_no_case(t, "Default-Start:")) {
742 k = delete_chars(t+14, WHITESPACE "-");
745 if (!(d = strdup(k))) {
750 free(s->sysv_runlevels);
751 s->sysv_runlevels = d;
754 } else if (startswith_no_case(t, "Description:")) {
757 state = LSB_DESCRIPTION;
759 if ((j = strstrip(t+12)) && *j) {
760 if (!(d = strdup(j))) {
767 free(long_description);
768 long_description = d;
770 } else if (startswith_no_case(t, "Short-Description:")) {
775 if ((j = strstrip(t+18)) && *j) {
776 if (!(d = strdup(j))) {
783 free(short_description);
784 short_description = d;
786 } else if (startswith_no_case(t, "X-Interactive:")) {
789 if ((b = parse_boolean(strstrip(t+14))) < 0) {
790 log_warning("[%s:%u] Couldn't parse interactive flag. Ignoring.", path, line);
795 s->exec_context.std_input = EXEC_INPUT_TTY;
797 s->exec_context.std_input = EXEC_INPUT_NULL;
799 } else if (state == LSB_DESCRIPTION) {
801 if (startswith(l, "#\t") || startswith(l, "# ")) {
804 if ((j = strstrip(t)) && *j) {
807 if (long_description)
808 d = join(long_description, " ", t, NULL);
817 free(long_description);
818 long_description = d;
827 if ((r = sysv_exec_commands(s)) < 0)
830 if (s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
831 /* If there a runlevels configured for this service
832 * but none of the standard ones, then we assume this
833 * is some special kind of service (which might be
834 * needed for early boot) and don't create any links
837 s->meta.default_dependencies = false;
839 /* Don't timeout special services during boot (like fsck) */
842 s->timeout_usec = DEFAULT_SYSV_TIMEOUT_USEC;
844 /* Special setting for all SysV services */
845 s->type = SERVICE_FORKING;
846 s->remain_after_exit = !s->pid_file;
847 s->restart = SERVICE_RESTART_NO;
848 s->exec_context.std_output =
849 (s->meta.manager->sysv_console || s->exec_context.std_input == EXEC_INPUT_TTY)
850 ? EXEC_OUTPUT_TTY : s->meta.manager->default_std_output;
851 s->exec_context.kill_mode = KILL_PROCESS;
853 /* We use the long description only if
854 * no short description is set. */
856 if (short_description)
857 description = short_description;
858 else if (chkconfig_description)
859 description = chkconfig_description;
860 else if (long_description)
861 description = long_description;
868 if (!(d = strappend(s->sysv_has_lsb ? "LSB: " : "SYSV: ", description))) {
873 u->meta.description = d;
876 /* The priority that has been set in /etc/rcN.d/ hierarchies
877 * takes precedence over what is stored as default in the LSB
879 if (s->sysv_start_priority_from_rcnd >= 0)
880 s->sysv_start_priority = s->sysv_start_priority_from_rcnd;
882 u->meta.load_state = UNIT_LOADED;
890 free(short_description);
891 free(long_description);
892 free(chkconfig_description);
897 static int service_load_sysv_name(Service *s, const char *name) {
903 /* For SysV services we strip the boot.*, rc.* and *.sh
904 * prefixes/suffixes. */
905 #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
906 if (endswith(name, ".sh.service"))
911 if (startswith(name, "boot."))
915 #ifdef TARGET_FRUGALWARE
916 if (startswith(name, "rc."))
920 STRV_FOREACH(p, s->meta.manager->lookup_paths.sysvinit_path) {
924 path = join(*p, "/", name, NULL);
928 assert(endswith(path, ".service"));
929 path[strlen(path)-8] = 0;
931 r = service_load_sysv_path(s, path);
933 #if defined(TARGET_DEBIAN) || defined(TARGET_UBUNTU) || defined(TARGET_ANGSTROM)
934 if (r >= 0 && s->meta.load_state == UNIT_STUB) {
935 /* Try Debian style *.sh source'able init scripts */
937 r = service_load_sysv_path(s, path);
943 if (r >= 0 && s->meta.load_state == UNIT_STUB) {
944 /* Try SUSE style boot.* init scripts */
946 path = join(*p, "/boot.", name, NULL);
950 /* Drop .service suffix */
951 path[strlen(path)-8] = 0;
952 r = service_load_sysv_path(s, path);
957 #ifdef TARGET_FRUGALWARE
958 if (r >= 0 && s->meta.load_state == UNIT_STUB) {
959 /* Try Frugalware style rc.* init scripts */
961 path = join(*p, "/rc.", name, NULL);
965 /* Drop .service suffix */
966 path[strlen(path)-8] = 0;
967 r = service_load_sysv_path(s, path);
975 if ((s->meta.load_state != UNIT_STUB))
982 static int service_load_sysv(Service *s) {
989 /* Load service data from SysV init scripts, preferably with
992 if (strv_isempty(s->meta.manager->lookup_paths.sysvinit_path))
995 if ((t = s->meta.id))
996 if ((r = service_load_sysv_name(s, t)) < 0)
999 if (s->meta.load_state == UNIT_STUB)
1000 SET_FOREACH(t, s->meta.names, i) {
1001 if (t == s->meta.id)
1004 if ((r = service_load_sysv_name(s, t)) < 0)
1007 if (s->meta.load_state != UNIT_STUB)
1015 static int fsck_fix_order(Service *s) {
1021 if (s->fsck_passno <= 0)
1024 /* For each pair of services where both have an fsck priority
1025 * we order things based on it. */
1027 LIST_FOREACH(units_by_type, other, s->meta.manager->units_by_type[UNIT_SERVICE]) {
1031 t = (Service*) other;
1036 if (t->meta.load_state != UNIT_LOADED)
1039 if (t->fsck_passno <= 0)
1042 if (t->fsck_passno < s->fsck_passno)
1044 else if (t->fsck_passno > s->fsck_passno)
1049 if ((r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
1056 static int service_verify(Service *s) {
1059 if (s->meta.load_state != UNIT_LOADED)
1062 if (!s->exec_command[SERVICE_EXEC_START]) {
1063 log_error("%s lacks ExecStart setting. Refusing.", s->meta.id);
1067 if (s->type != SERVICE_ONESHOT &&
1068 s->exec_command[SERVICE_EXEC_START]->command_next) {
1069 log_error("%s has more than one ExecStart setting, which is only allowed for Type=oneshot services. Refusing.", s->meta.id);
1073 if (s->type == SERVICE_ONESHOT &&
1074 s->exec_command[SERVICE_EXEC_RELOAD]) {
1075 log_error("%s has an ExecReload setting, which is not allowed for Type=oneshot services. Refusing.", s->meta.id);
1079 if (s->type == SERVICE_DBUS && !s->bus_name) {
1080 log_error("%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", s->meta.id);
1084 if (s->exec_context.pam_name && s->exec_context.kill_mode != KILL_CONTROL_GROUP) {
1085 log_error("%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", s->meta.id);
1092 static int service_add_default_dependencies(Service *s) {
1097 /* Add a number of automatic dependencies useful for the
1098 * majority of services. */
1100 /* First, pull in base system */
1101 if (s->meta.manager->running_as == MANAGER_SYSTEM) {
1103 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true)) < 0)
1106 } else if (s->meta.manager->running_as == MANAGER_USER) {
1108 if ((r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_SOCKETS_TARGET, NULL, true)) < 0)
1112 /* Second, activate normal shutdown */
1113 return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true);
1116 static int service_load(Unit *u) {
1118 Service *s = SERVICE(u);
1122 /* Load a .service file */
1123 if ((r = unit_load_fragment(u)) < 0)
1126 #ifdef HAVE_SYSV_COMPAT
1127 /* Load a classic init script as a fallback, if we couldn't find anything */
1128 if (u->meta.load_state == UNIT_STUB)
1129 if ((r = service_load_sysv(s)) < 0)
1133 /* Still nothing found? Then let's give up */
1134 if (u->meta.load_state == UNIT_STUB)
1137 /* We were able to load something, then let's add in the
1138 * dropin directories. */
1139 if ((r = unit_load_dropin(unit_follow_merge(u))) < 0)
1142 /* This is a new unit? Then let's add in some extras */
1143 if (u->meta.load_state == UNIT_LOADED) {
1144 if ((r = unit_add_exec_dependencies(u, &s->exec_context)) < 0)
1147 if ((r = unit_add_default_cgroups(u)) < 0)
1150 #ifdef HAVE_SYSV_COMPAT
1151 if ((r = sysv_fix_order(s)) < 0)
1155 if ((r = fsck_fix_order(s)) < 0)
1159 if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
1162 if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE)
1163 s->notify_access = NOTIFY_MAIN;
1165 if (s->type == SERVICE_DBUS || s->bus_name)
1166 if ((r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_REQUIRES, SPECIAL_DBUS_SOCKET, NULL, true)) < 0)
1169 if (s->meta.default_dependencies)
1170 if ((r = service_add_default_dependencies(s)) < 0)
1174 return service_verify(s);
1177 static void service_dump(Unit *u, FILE *f, const char *prefix) {
1179 ServiceExecCommand c;
1180 Service *s = SERVICE(u);
1181 const char *prefix2;
1186 p2 = strappend(prefix, "\t");
1187 prefix2 = p2 ? p2 : prefix;
1190 "%sService State: %s\n"
1191 "%sPermissionsStartOnly: %s\n"
1192 "%sRootDirectoryStartOnly: %s\n"
1193 "%sRemainAfterExit: %s\n"
1194 "%sGuessMainPID: %s\n"
1197 "%sNotifyAccess: %s\n",
1198 prefix, service_state_to_string(s->state),
1199 prefix, yes_no(s->permissions_start_only),
1200 prefix, yes_no(s->root_directory_start_only),
1201 prefix, yes_no(s->remain_after_exit),
1202 prefix, yes_no(s->guess_main_pid),
1203 prefix, service_type_to_string(s->type),
1204 prefix, service_restart_to_string(s->restart),
1205 prefix, notify_access_to_string(s->notify_access));
1207 if (s->control_pid > 0)
1209 "%sControl PID: %lu\n",
1210 prefix, (unsigned long) s->control_pid);
1212 if (s->main_pid > 0)
1215 "%sMain PID Known: %s\n"
1216 "%sMain PID Alien: %s\n",
1217 prefix, (unsigned long) s->main_pid,
1218 prefix, yes_no(s->main_pid_known),
1219 prefix, yes_no(s->main_pid_alien));
1224 prefix, s->pid_file);
1229 "%sBus Name Good: %s\n",
1230 prefix, s->bus_name,
1231 prefix, yes_no(s->bus_name_good));
1233 exec_context_dump(&s->exec_context, f, prefix);
1235 for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
1237 if (!s->exec_command[c])
1240 fprintf(f, "%s-> %s:\n",
1241 prefix, service_exec_command_to_string(c));
1243 exec_command_dump_list(s->exec_command[c], f, prefix2);
1246 #ifdef HAVE_SYSV_COMPAT
1249 "%sSysV Init Script Path: %s\n"
1250 "%sSysV Init Script has LSB Header: %s\n"
1251 "%sSysVEnabled: %s\n",
1252 prefix, s->sysv_path,
1253 prefix, yes_no(s->sysv_has_lsb),
1254 prefix, yes_no(s->sysv_enabled));
1256 if (s->sysv_start_priority >= 0)
1258 "%sSysVStartPriority: %i\n",
1259 prefix, s->sysv_start_priority);
1261 if (s->sysv_runlevels)
1262 fprintf(f, "%sSysVRunLevels: %s\n",
1263 prefix, s->sysv_runlevels);
1266 if (s->fsck_passno > 0)
1268 "%sFsckPassNo: %i\n",
1269 prefix, s->fsck_passno);
1272 fprintf(f, "%sStatus Text: %s\n",
1273 prefix, s->status_text);
1278 static int service_load_pid_file(Service *s) {
1285 if (s->main_pid_known)
1291 if ((r = read_one_line_file(s->pid_file, &k)) < 0)
1294 r = parse_pid(k, &pid);
1300 if (kill(pid, 0) < 0 && errno != EPERM) {
1301 log_warning("PID %lu read from file %s does not exist. Your service or init script might be broken.",
1302 (unsigned long) pid, s->pid_file);
1306 if ((r = service_set_main_pid(s, pid)) < 0)
1309 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1310 /* FIXME: we need to do something here */
1316 static int service_search_main_pid(Service *s) {
1322 /* If we know it anyway, don't ever fallback to unreliable
1324 if (s->main_pid_known)
1327 if (!s->guess_main_pid)
1330 assert(s->main_pid <= 0);
1332 if ((pid = cgroup_bonding_search_main_pid_list(s->meta.cgroup_bondings)) <= 0)
1335 if ((r = service_set_main_pid(s, pid)) < 0)
1338 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1339 /* FIXME: we need to do something here */
1345 static int service_get_sockets(Service *s, Set **_set) {
1354 if (s->socket_fd >= 0)
1357 if (!set_isempty(s->configured_sockets))
1360 /* Collects all Socket objects that belong to this
1361 * service. Note that a service might have multiple sockets
1362 * via multiple names. */
1364 if (!(set = set_new(NULL, NULL)))
1367 SET_FOREACH(t, s->meta.names, i) {
1371 /* Look for all socket objects that go by any of our
1372 * units and collect their fds */
1374 if (!(k = unit_name_change_suffix(t, ".socket"))) {
1379 p = manager_get_unit(s->meta.manager, k);
1385 if ((r = set_put(set, p)) < 0)
1397 static int service_notify_sockets_dead(Service *s) {
1399 Set *set, *free_set = NULL;
1405 /* Notifies all our sockets when we die */
1407 if (s->socket_fd >= 0)
1410 if (!set_isempty(s->configured_sockets))
1411 set = s->configured_sockets;
1413 if ((r = service_get_sockets(s, &free_set)) < 0)
1419 SET_FOREACH(sock, set, i)
1420 socket_notify_service_dead(sock);
1427 static void service_set_state(Service *s, ServiceState state) {
1428 ServiceState old_state;
1431 old_state = s->state;
1434 if (state != SERVICE_START_PRE &&
1435 state != SERVICE_START &&
1436 state != SERVICE_START_POST &&
1437 state != SERVICE_RELOAD &&
1438 state != SERVICE_STOP &&
1439 state != SERVICE_STOP_SIGTERM &&
1440 state != SERVICE_STOP_SIGKILL &&
1441 state != SERVICE_STOP_POST &&
1442 state != SERVICE_FINAL_SIGTERM &&
1443 state != SERVICE_FINAL_SIGKILL &&
1444 state != SERVICE_AUTO_RESTART)
1445 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1447 if (state != SERVICE_START &&
1448 state != SERVICE_START_POST &&
1449 state != SERVICE_RUNNING &&
1450 state != SERVICE_RELOAD &&
1451 state != SERVICE_STOP &&
1452 state != SERVICE_STOP_SIGTERM &&
1453 state != SERVICE_STOP_SIGKILL) {
1454 service_unwatch_main_pid(s);
1455 s->main_command = NULL;
1458 if (state != SERVICE_START_PRE &&
1459 state != SERVICE_START &&
1460 state != SERVICE_START_POST &&
1461 state != SERVICE_RELOAD &&
1462 state != SERVICE_STOP &&
1463 state != SERVICE_STOP_SIGTERM &&
1464 state != SERVICE_STOP_SIGKILL &&
1465 state != SERVICE_STOP_POST &&
1466 state != SERVICE_FINAL_SIGTERM &&
1467 state != SERVICE_FINAL_SIGKILL) {
1468 service_unwatch_control_pid(s);
1469 s->control_command = NULL;
1470 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
1473 if (state == SERVICE_DEAD ||
1474 state == SERVICE_STOP ||
1475 state == SERVICE_STOP_SIGTERM ||
1476 state == SERVICE_STOP_SIGKILL ||
1477 state == SERVICE_STOP_POST ||
1478 state == SERVICE_FINAL_SIGTERM ||
1479 state == SERVICE_FINAL_SIGKILL ||
1480 state == SERVICE_FAILED ||
1481 state == SERVICE_AUTO_RESTART)
1482 service_notify_sockets_dead(s);
1484 if (state != SERVICE_START_PRE &&
1485 state != SERVICE_START &&
1486 state != SERVICE_START_POST &&
1487 state != SERVICE_RUNNING &&
1488 state != SERVICE_RELOAD &&
1489 state != SERVICE_STOP &&
1490 state != SERVICE_STOP_SIGTERM &&
1491 state != SERVICE_STOP_SIGKILL &&
1492 state != SERVICE_STOP_POST &&
1493 state != SERVICE_FINAL_SIGTERM &&
1494 state != SERVICE_FINAL_SIGKILL &&
1495 !(state == SERVICE_DEAD && s->meta.job)) {
1496 service_close_socket_fd(s);
1497 service_connection_unref(s);
1500 /* For the inactive states unit_notify() will trim the cgroup,
1501 * but for exit we have to do that ourselves... */
1502 if (state == SERVICE_EXITED && s->meta.manager->n_reloading <= 0)
1503 cgroup_bonding_trim_list(s->meta.cgroup_bondings, true);
1505 if (old_state != state)
1506 log_debug("%s changed %s -> %s", s->meta.id, service_state_to_string(old_state), service_state_to_string(state));
1508 unit_notify(UNIT(s), state_translation_table[old_state], state_translation_table[state], !s->reload_failure);
1509 s->reload_failure = false;
1512 static int service_coldplug(Unit *u) {
1513 Service *s = SERVICE(u);
1517 assert(s->state == SERVICE_DEAD);
1519 if (s->deserialized_state != s->state) {
1521 if (s->deserialized_state == SERVICE_START_PRE ||
1522 s->deserialized_state == SERVICE_START ||
1523 s->deserialized_state == SERVICE_START_POST ||
1524 s->deserialized_state == SERVICE_RELOAD ||
1525 s->deserialized_state == SERVICE_STOP ||
1526 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1527 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1528 s->deserialized_state == SERVICE_STOP_POST ||
1529 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1530 s->deserialized_state == SERVICE_FINAL_SIGKILL ||
1531 s->deserialized_state == SERVICE_AUTO_RESTART) {
1533 if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_usec > 0) {
1536 k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_usec;
1538 if ((r = unit_watch_timer(UNIT(s), k, &s->timer_watch)) < 0)
1543 if ((s->deserialized_state == SERVICE_START &&
1544 (s->type == SERVICE_FORKING ||
1545 s->type == SERVICE_DBUS ||
1546 s->type == SERVICE_ONESHOT ||
1547 s->type == SERVICE_NOTIFY)) ||
1548 s->deserialized_state == SERVICE_START_POST ||
1549 s->deserialized_state == SERVICE_RUNNING ||
1550 s->deserialized_state == SERVICE_RELOAD ||
1551 s->deserialized_state == SERVICE_STOP ||
1552 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1553 s->deserialized_state == SERVICE_STOP_SIGKILL)
1554 if (s->main_pid > 0)
1555 if ((r = unit_watch_pid(UNIT(s), s->main_pid)) < 0)
1558 if (s->deserialized_state == SERVICE_START_PRE ||
1559 s->deserialized_state == SERVICE_START ||
1560 s->deserialized_state == SERVICE_START_POST ||
1561 s->deserialized_state == SERVICE_RELOAD ||
1562 s->deserialized_state == SERVICE_STOP ||
1563 s->deserialized_state == SERVICE_STOP_SIGTERM ||
1564 s->deserialized_state == SERVICE_STOP_SIGKILL ||
1565 s->deserialized_state == SERVICE_STOP_POST ||
1566 s->deserialized_state == SERVICE_FINAL_SIGTERM ||
1567 s->deserialized_state == SERVICE_FINAL_SIGKILL)
1568 if (s->control_pid > 0)
1569 if ((r = unit_watch_pid(UNIT(s), s->control_pid)) < 0)
1572 service_set_state(s, s->deserialized_state);
1578 static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
1582 unsigned rn_fds = 0;
1583 Set *set, *free_set = NULL;
1590 if (s->socket_fd >= 0)
1593 if (!set_isempty(s->configured_sockets))
1594 set = s->configured_sockets;
1596 if ((r = service_get_sockets(s, &free_set)) < 0)
1602 SET_FOREACH(sock, set, i) {
1606 if ((r = socket_collect_fds(sock, &cfds, &cn_fds)) < 0)
1618 if (!(t = new(int, rn_fds+cn_fds))) {
1624 memcpy(t, rfds, rn_fds * sizeof(int));
1625 memcpy(t+rn_fds, cfds, cn_fds * sizeof(int));
1630 rn_fds = rn_fds+cn_fds;
1648 static int service_spawn(
1653 bool apply_permissions,
1655 bool apply_tty_stdin,
1656 bool set_notify_socket,
1661 int *fds = NULL, *fdsbuf = NULL;
1662 unsigned n_fds = 0, n_env = 0;
1663 char **argv = NULL, **final_env = NULL, **our_env = NULL;
1670 s->exec_context.std_input == EXEC_INPUT_SOCKET ||
1671 s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
1672 s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
1674 if (s->socket_fd >= 0) {
1675 fds = &s->socket_fd;
1678 if ((r = service_collect_fds(s, &fdsbuf, &n_fds)) < 0)
1685 if (timeout && s->timeout_usec) {
1686 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1689 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1691 if (!(argv = unit_full_printf_strv(UNIT(s), c->argv))) {
1696 if (!(our_env = new0(char*, 4))) {
1701 if (set_notify_socket)
1702 if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", s->meta.manager->notify_socket) < 0) {
1707 if (s->main_pid > 0)
1708 if (asprintf(our_env + n_env++, "MAINPID=%lu", (unsigned long) s->main_pid) < 0) {
1713 if (!(final_env = strv_env_merge(2,
1714 s->meta.manager->environment,
1729 s->meta.manager->confirm_spawn,
1730 s->meta.cgroup_bondings,
1737 if ((r = unit_watch_pid(UNIT(s), pid)) < 0)
1738 /* FIXME: we need to do something here */
1744 strv_free(final_env);
1754 strv_free(final_env);
1757 unit_unwatch_timer(UNIT(s), &s->timer_watch);
1762 static int main_pid_good(Service *s) {
1765 /* Returns 0 if the pid is dead, 1 if it is good, -1 if we
1768 /* If we know the pid file, then lets just check if it is
1770 if (s->main_pid_known) {
1772 /* If it's an alien child let's check if it is still
1774 if (s->main_pid_alien)
1775 return kill(s->main_pid, 0) >= 0 || errno != ESRCH;
1777 /* .. otherwise assume we'll get a SIGCHLD for it,
1778 * which we really should wait for to collect exit
1779 * status and code */
1780 return s->main_pid > 0;
1783 /* We don't know the pid */
1787 static int control_pid_good(Service *s) {
1790 return s->control_pid > 0;
1793 static int cgroup_good(Service *s) {
1798 if ((r = cgroup_bonding_is_empty_list(s->meta.cgroup_bondings)) < 0)
1804 static void service_enter_dead(Service *s, bool success, bool allow_restart) {
1811 if (allow_restart &&
1812 !s->forbid_restart &&
1813 (s->restart == SERVICE_RESTART_ALWAYS ||
1814 (s->restart == SERVICE_RESTART_ON_SUCCESS && !s->failure) ||
1815 (s->restart == SERVICE_RESTART_ON_FAILURE && s->failure) ||
1816 (s->restart == SERVICE_RESTART_ON_ABORT && s->failure &&
1817 (s->main_exec_status.code == CLD_KILLED ||
1818 s->main_exec_status.code == CLD_DUMPED)))) {
1820 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
1823 service_set_state(s, SERVICE_AUTO_RESTART);
1825 service_set_state(s, s->failure ? SERVICE_FAILED : SERVICE_DEAD);
1827 s->forbid_restart = false;
1832 log_warning("%s failed to run install restart timer: %s", s->meta.id, strerror(-r));
1833 service_enter_dead(s, false, false);
1836 static void service_enter_signal(Service *s, ServiceState state, bool success);
1838 static void service_enter_stop_post(Service *s, bool success) {
1845 service_unwatch_control_pid(s);
1847 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST])) {
1848 s->control_command_id = SERVICE_EXEC_STOP_POST;
1850 if ((r = service_spawn(s,
1854 !s->permissions_start_only,
1855 !s->root_directory_start_only,
1858 &s->control_pid)) < 0)
1862 service_set_state(s, SERVICE_STOP_POST);
1864 service_enter_signal(s, SERVICE_FINAL_SIGTERM, true);
1869 log_warning("%s failed to run 'stop-post' task: %s", s->meta.id, strerror(-r));
1870 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
1873 static void service_enter_signal(Service *s, ServiceState state, bool success) {
1875 Set *pid_set = NULL;
1876 bool wait_for_exit = false;
1883 if (s->exec_context.kill_mode != KILL_NONE) {
1884 int sig = (state == SERVICE_STOP_SIGTERM || state == SERVICE_FINAL_SIGTERM) ? s->exec_context.kill_signal : SIGKILL;
1886 if (s->main_pid > 0) {
1887 if (kill_and_sigcont(s->main_pid, sig) < 0 && errno != ESRCH)
1888 log_warning("Failed to kill main process %li: %m", (long) s->main_pid);
1890 wait_for_exit = !s->main_pid_alien;
1893 if (s->control_pid > 0) {
1894 if (kill_and_sigcont(s->control_pid, sig) < 0 && errno != ESRCH)
1895 log_warning("Failed to kill control process %li: %m", (long) s->control_pid);
1897 wait_for_exit = true;
1900 if (s->exec_context.kill_mode == KILL_CONTROL_GROUP) {
1902 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func))) {
1907 /* Exclude the main/control pids from being killed via the cgroup */
1908 if (s->main_pid > 0)
1909 if ((r = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0)
1912 if (s->control_pid > 0)
1913 if ((r = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0)
1916 if ((r = cgroup_bonding_kill_list(s->meta.cgroup_bondings, sig, true, pid_set)) < 0) {
1917 if (r != -EAGAIN && r != -ESRCH && r != -ENOENT)
1918 log_warning("Failed to kill control group: %s", strerror(-r));
1920 wait_for_exit = true;
1927 if (wait_for_exit) {
1928 if (s->timeout_usec > 0)
1929 if ((r = unit_watch_timer(UNIT(s), s->timeout_usec, &s->timer_watch)) < 0)
1932 service_set_state(s, state);
1933 } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1934 service_enter_stop_post(s, true);
1936 service_enter_dead(s, true, true);
1941 log_warning("%s failed to kill processes: %s", s->meta.id, strerror(-r));
1943 if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
1944 service_enter_stop_post(s, false);
1946 service_enter_dead(s, false, true);
1952 static void service_enter_stop(Service *s, bool success) {
1960 service_unwatch_control_pid(s);
1962 if ((s->control_command = s->exec_command[SERVICE_EXEC_STOP])) {
1963 s->control_command_id = SERVICE_EXEC_STOP;
1965 if ((r = service_spawn(s,
1969 !s->permissions_start_only,
1970 !s->root_directory_start_only,
1973 &s->control_pid)) < 0)
1976 service_set_state(s, SERVICE_STOP);
1978 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
1983 log_warning("%s failed to run 'stop' task: %s", s->meta.id, strerror(-r));
1984 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
1987 static void service_enter_running(Service *s, bool success) {
1988 int main_pid_ok, cgroup_ok;
1994 main_pid_ok = main_pid_good(s);
1995 cgroup_ok = cgroup_good(s);
1997 if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
1998 (s->bus_name_good || s->type != SERVICE_DBUS))
1999 service_set_state(s, SERVICE_RUNNING);
2000 else if (s->remain_after_exit)
2001 service_set_state(s, SERVICE_EXITED);
2003 service_enter_stop(s, true);
2006 static void service_enter_start_post(Service *s) {
2010 service_unwatch_control_pid(s);
2012 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_POST])) {
2013 s->control_command_id = SERVICE_EXEC_START_POST;
2015 if ((r = service_spawn(s,
2019 !s->permissions_start_only,
2020 !s->root_directory_start_only,
2023 &s->control_pid)) < 0)
2026 service_set_state(s, SERVICE_START_POST);
2028 service_enter_running(s, true);
2033 log_warning("%s failed to run 'start-post' task: %s", s->meta.id, strerror(-r));
2034 service_enter_stop(s, false);
2037 static void service_enter_start(Service *s) {
2044 assert(s->exec_command[SERVICE_EXEC_START]);
2045 assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT);
2047 if (s->type == SERVICE_FORKING)
2048 service_unwatch_control_pid(s);
2050 service_unwatch_main_pid(s);
2052 if (s->type == SERVICE_FORKING) {
2053 s->control_command_id = SERVICE_EXEC_START;
2054 c = s->control_command = s->exec_command[SERVICE_EXEC_START];
2056 s->main_command = NULL;
2058 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2059 s->control_command = NULL;
2061 c = s->main_command = s->exec_command[SERVICE_EXEC_START];
2064 if ((r = service_spawn(s,
2066 s->type == SERVICE_FORKING || s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY,
2071 s->notify_access != NOTIFY_NONE,
2075 if (s->type == SERVICE_SIMPLE) {
2076 /* For simple services we immediately start
2077 * the START_POST binaries. */
2079 service_set_main_pid(s, pid);
2080 service_enter_start_post(s);
2082 } else if (s->type == SERVICE_FORKING) {
2084 /* For forking services we wait until the start
2085 * process exited. */
2087 s->control_pid = pid;
2088 service_set_state(s, SERVICE_START);
2090 } else if (s->type == SERVICE_ONESHOT ||
2091 s->type == SERVICE_DBUS ||
2092 s->type == SERVICE_NOTIFY) {
2094 /* For oneshot services we wait until the start
2095 * process exited, too, but it is our main process. */
2097 /* For D-Bus services we know the main pid right away,
2098 * but wait for the bus name to appear on the
2099 * bus. Notify services are similar. */
2101 service_set_main_pid(s, pid);
2102 service_set_state(s, SERVICE_START);
2104 assert_not_reached("Unknown service type");
2109 log_warning("%s failed to run 'start' task: %s", s->meta.id, strerror(-r));
2110 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2113 static void service_enter_start_pre(Service *s) {
2118 service_unwatch_control_pid(s);
2120 if ((s->control_command = s->exec_command[SERVICE_EXEC_START_PRE])) {
2121 s->control_command_id = SERVICE_EXEC_START_PRE;
2123 if ((r = service_spawn(s,
2127 !s->permissions_start_only,
2128 !s->root_directory_start_only,
2131 &s->control_pid)) < 0)
2134 service_set_state(s, SERVICE_START_PRE);
2136 service_enter_start(s);
2141 log_warning("%s failed to run 'start-pre' task: %s", s->meta.id, strerror(-r));
2142 service_enter_dead(s, false, true);
2145 static void service_enter_restart(Service *s) {
2150 dbus_error_init(&error);
2153 log_info("Job pending for unit, delaying automatic restart.");
2155 if ((r = unit_watch_timer(UNIT(s), s->restart_usec, &s->timer_watch)) < 0)
2159 service_enter_dead(s, true, false);
2161 if ((r = manager_add_job(s->meta.manager, JOB_START, UNIT(s), JOB_FAIL, false, &error, NULL)) < 0)
2164 log_debug("%s scheduled restart job.", s->meta.id);
2168 log_warning("%s failed to schedule restart job: %s", s->meta.id, bus_error(&error, -r));
2169 service_enter_dead(s, false, false);
2171 dbus_error_free(&error);
2174 static void service_enter_reload(Service *s) {
2179 service_unwatch_control_pid(s);
2181 if ((s->control_command = s->exec_command[SERVICE_EXEC_RELOAD])) {
2182 s->control_command_id = SERVICE_EXEC_RELOAD;
2184 if ((r = service_spawn(s,
2188 !s->permissions_start_only,
2189 !s->root_directory_start_only,
2192 &s->control_pid)) < 0)
2195 service_set_state(s, SERVICE_RELOAD);
2197 service_enter_running(s, true);
2202 log_warning("%s failed to run 'reload' task: %s", s->meta.id, strerror(-r));
2203 s->reload_failure = true;
2204 service_enter_running(s, true);
2207 static void service_run_next_control(Service *s, bool success) {
2211 assert(s->control_command);
2212 assert(s->control_command->command_next);
2217 assert(s->control_command_id != SERVICE_EXEC_START);
2219 s->control_command = s->control_command->command_next;
2220 service_unwatch_control_pid(s);
2222 if ((r = service_spawn(s,
2226 !s->permissions_start_only,
2227 !s->root_directory_start_only,
2228 s->control_command_id == SERVICE_EXEC_START_PRE ||
2229 s->control_command_id == SERVICE_EXEC_STOP_POST,
2231 &s->control_pid)) < 0)
2237 log_warning("%s failed to run next control task: %s", s->meta.id, strerror(-r));
2239 if (s->state == SERVICE_START_PRE)
2240 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2241 else if (s->state == SERVICE_STOP)
2242 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2243 else if (s->state == SERVICE_STOP_POST)
2244 service_enter_dead(s, false, true);
2245 else if (s->state == SERVICE_RELOAD) {
2246 s->reload_failure = true;
2247 service_enter_running(s, true);
2249 service_enter_stop(s, false);
2252 static void service_run_next_main(Service *s, bool success) {
2257 assert(s->main_command);
2258 assert(s->main_command->command_next);
2259 assert(s->type == SERVICE_ONESHOT);
2264 s->main_command = s->main_command->command_next;
2265 service_unwatch_main_pid(s);
2267 if ((r = service_spawn(s,
2274 s->notify_access != NOTIFY_NONE,
2278 service_set_main_pid(s, pid);
2283 log_warning("%s failed to run next main task: %s", s->meta.id, strerror(-r));
2284 service_enter_stop(s, false);
2287 static int service_start(Unit *u) {
2288 Service *s = SERVICE(u);
2292 /* We cannot fulfill this request right now, try again later
2294 if (s->state == SERVICE_STOP ||
2295 s->state == SERVICE_STOP_SIGTERM ||
2296 s->state == SERVICE_STOP_SIGKILL ||
2297 s->state == SERVICE_STOP_POST ||
2298 s->state == SERVICE_FINAL_SIGTERM ||
2299 s->state == SERVICE_FINAL_SIGKILL)
2302 /* Already on it! */
2303 if (s->state == SERVICE_START_PRE ||
2304 s->state == SERVICE_START ||
2305 s->state == SERVICE_START_POST)
2308 assert(s->state == SERVICE_DEAD || s->state == SERVICE_FAILED || s->state == SERVICE_AUTO_RESTART);
2310 /* Make sure we don't enter a busy loop of some kind. */
2311 if (!ratelimit_test(&s->ratelimit)) {
2312 log_warning("%s start request repeated too quickly, refusing to start.", u->meta.id);
2317 s->main_pid_known = false;
2318 s->main_pid_alien = false;
2319 s->forbid_restart = false;
2321 service_enter_start_pre(s);
2325 static int service_stop(Unit *u) {
2326 Service *s = SERVICE(u);
2330 /* This is a user request, so don't do restarts on this
2332 s->forbid_restart = true;
2335 if (s->state == SERVICE_STOP ||
2336 s->state == SERVICE_STOP_SIGTERM ||
2337 s->state == SERVICE_STOP_SIGKILL ||
2338 s->state == SERVICE_STOP_POST ||
2339 s->state == SERVICE_FINAL_SIGTERM ||
2340 s->state == SERVICE_FINAL_SIGKILL)
2343 /* Don't allow a restart */
2344 if (s->state == SERVICE_AUTO_RESTART) {
2345 service_set_state(s, SERVICE_DEAD);
2349 /* If there's already something running we go directly into
2351 if (s->state == SERVICE_START_PRE ||
2352 s->state == SERVICE_START ||
2353 s->state == SERVICE_START_POST ||
2354 s->state == SERVICE_RELOAD) {
2355 service_enter_signal(s, SERVICE_STOP_SIGTERM, true);
2359 assert(s->state == SERVICE_RUNNING ||
2360 s->state == SERVICE_EXITED);
2362 service_enter_stop(s, true);
2366 static int service_reload(Unit *u) {
2367 Service *s = SERVICE(u);
2371 assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
2373 service_enter_reload(s);
2377 static bool service_can_reload(Unit *u) {
2378 Service *s = SERVICE(u);
2382 return !!s->exec_command[SERVICE_EXEC_RELOAD];
2385 static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
2386 Service *s = SERVICE(u);
2392 unit_serialize_item(u, f, "state", service_state_to_string(s->state));
2393 unit_serialize_item(u, f, "failure", yes_no(s->failure));
2395 if (s->control_pid > 0)
2396 unit_serialize_item_format(u, f, "control-pid", "%lu", (unsigned long) s->control_pid);
2398 if (s->main_pid_known && s->main_pid > 0)
2399 unit_serialize_item_format(u, f, "main-pid", "%lu", (unsigned long) s->main_pid);
2401 unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
2404 unit_serialize_item(u, f, "status-text", s->status_text);
2406 /* There's a minor uncleanliness here: if there are multiple
2407 * commands attached here, we will start from the first one
2409 if (s->control_command_id >= 0)
2410 unit_serialize_item(u, f, "control-command", service_exec_command_to_string(s->control_command_id));
2412 if (s->socket_fd >= 0) {
2415 if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
2418 unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
2421 if (s->main_exec_status.pid > 0) {
2422 unit_serialize_item_format(u, f, "main-exec-status-pid", "%lu", (unsigned long) s->main_exec_status.pid);
2423 dual_timestamp_serialize(f, "main-exec-status-start", &s->main_exec_status.start_timestamp);
2424 dual_timestamp_serialize(f, "main-exec-status-exit", &s->main_exec_status.exit_timestamp);
2426 if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) {
2427 unit_serialize_item_format(u, f, "main-exec-status-code", "%i", s->main_exec_status.code);
2428 unit_serialize_item_format(u, f, "main-exec-status-status", "%i", s->main_exec_status.status);
2435 static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
2436 Service *s = SERVICE(u);
2443 if (streq(key, "state")) {
2446 if ((state = service_state_from_string(value)) < 0)
2447 log_debug("Failed to parse state value %s", value);
2449 s->deserialized_state = state;
2450 } else if (streq(key, "failure")) {
2453 if ((b = parse_boolean(value)) < 0)
2454 log_debug("Failed to parse failure value %s", value);
2456 s->failure = b || s->failure;
2457 } else if (streq(key, "control-pid")) {
2460 if (parse_pid(value, &pid) < 0)
2461 log_debug("Failed to parse control-pid value %s", value);
2463 s->control_pid = pid;
2464 } else if (streq(key, "main-pid")) {
2467 if (parse_pid(value, &pid) < 0)
2468 log_debug("Failed to parse main-pid value %s", value);
2470 service_set_main_pid(s, (pid_t) pid);
2471 } else if (streq(key, "main-pid-known")) {
2474 if ((b = parse_boolean(value)) < 0)
2475 log_debug("Failed to parse main-pid-known value %s", value);
2477 s->main_pid_known = b;
2478 } else if (streq(key, "status-text")) {
2481 if ((t = strdup(value))) {
2482 free(s->status_text);
2486 } else if (streq(key, "control-command")) {
2487 ServiceExecCommand id;
2489 if ((id = service_exec_command_from_string(value)) < 0)
2490 log_debug("Failed to parse exec-command value %s", value);
2492 s->control_command_id = id;
2493 s->control_command = s->exec_command[id];
2495 } else if (streq(key, "socket-fd")) {
2498 if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
2499 log_debug("Failed to parse socket-fd value %s", value);
2502 if (s->socket_fd >= 0)
2503 close_nointr_nofail(s->socket_fd);
2504 s->socket_fd = fdset_remove(fds, fd);
2506 } else if (streq(key, "main-exec-status-pid")) {
2509 if (parse_pid(value, &pid) < 0)
2510 log_debug("Failed to parse main-exec-status-pid value %s", value);
2512 s->main_exec_status.pid = pid;
2513 } else if (streq(key, "main-exec-status-code")) {
2516 if (safe_atoi(value, &i) < 0)
2517 log_debug("Failed to parse main-exec-status-code value %s", value);
2519 s->main_exec_status.code = i;
2520 } else if (streq(key, "main-exec-status-status")) {
2523 if (safe_atoi(value, &i) < 0)
2524 log_debug("Failed to parse main-exec-status-status value %s", value);
2526 s->main_exec_status.status = i;
2527 } else if (streq(key, "main-exec-status-start"))
2528 dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp);
2529 else if (streq(key, "main-exec-status-exit"))
2530 dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp);
2532 log_debug("Unknown serialization key '%s'", key);
2537 static UnitActiveState service_active_state(Unit *u) {
2540 return state_translation_table[SERVICE(u)->state];
2543 static const char *service_sub_state_to_string(Unit *u) {
2546 return service_state_to_string(SERVICE(u)->state);
2549 static bool service_check_gc(Unit *u) {
2550 Service *s = SERVICE(u);
2554 /* Never clean up services that still have a process around,
2555 * even if the service is formally dead. */
2556 if (cgroup_good(s) > 0 ||
2557 main_pid_good(s) > 0 ||
2558 control_pid_good(s) > 0)
2561 #ifdef HAVE_SYSV_COMPAT
2569 static bool service_check_snapshot(Unit *u) {
2570 Service *s = SERVICE(u);
2574 return !s->got_socket_fd;
2577 static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
2578 Service *s = SERVICE(u);
2584 if (!s->meta.fragment_path)
2585 success = is_clean_exit_lsb(code, status);
2587 success = is_clean_exit(code, status);
2589 if (s->main_pid == pid) {
2592 exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status);
2594 /* If this is not a forking service than the main
2595 * process got started and hence we copy the exit
2596 * status so that it is recorded both as main and as
2597 * control process exit status */
2598 if (s->main_command) {
2599 s->main_command->exec_status = s->main_exec_status;
2601 if (s->main_command->ignore)
2605 log_full(success ? LOG_DEBUG : LOG_NOTICE,
2606 "%s: main process exited, code=%s, status=%i", u->meta.id, sigchld_code_to_string(code), status);
2607 s->failure = s->failure || !success;
2609 if (s->main_command &&
2610 s->main_command->command_next &&
2613 /* There is another command to *
2614 * execute, so let's do that. */
2616 log_debug("%s running next main command for state %s", u->meta.id, service_state_to_string(s->state));
2617 service_run_next_main(s, success);
2621 /* The service exited, so the service is officially
2623 s->main_command = NULL;
2627 case SERVICE_START_POST:
2628 case SERVICE_RELOAD:
2630 /* Need to wait until the operation is
2635 if (s->type == SERVICE_ONESHOT) {
2636 /* This was our main goal, so let's go on */
2638 service_enter_start_post(s);
2640 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2643 assert(s->type == SERVICE_DBUS || s->type == SERVICE_NOTIFY);
2648 case SERVICE_RUNNING:
2649 service_enter_running(s, success);
2652 case SERVICE_STOP_SIGTERM:
2653 case SERVICE_STOP_SIGKILL:
2655 if (!control_pid_good(s))
2656 service_enter_stop_post(s, success);
2658 /* If there is still a control process, wait for that first */
2662 assert_not_reached("Uh, main process died at wrong time.");
2666 } else if (s->control_pid == pid) {
2670 if (s->control_command) {
2671 exec_status_exit(&s->control_command->exec_status, &s->exec_context, pid, code, status);
2673 if (s->control_command->ignore)
2677 log_full(success ? LOG_DEBUG : LOG_NOTICE,
2678 "%s: control process exited, code=%s status=%i", u->meta.id, sigchld_code_to_string(code), status);
2679 s->failure = s->failure || !success;
2681 if (s->control_command &&
2682 s->control_command->command_next &&
2685 /* There is another command to *
2686 * execute, so let's do that. */
2688 log_debug("%s running next control command for state %s", u->meta.id, service_state_to_string(s->state));
2689 service_run_next_control(s, success);
2692 /* No further commands for this step, so let's
2693 * figure out what to do next */
2695 s->control_command = NULL;
2696 s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
2698 log_debug("%s got final SIGCHLD for state %s", u->meta.id, service_state_to_string(s->state));
2702 case SERVICE_START_PRE:
2704 service_enter_start(s);
2706 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2710 assert(s->type == SERVICE_FORKING);
2712 /* Let's try to load the pid
2713 * file here if we can. We
2714 * ignore the return value,
2715 * since the PID file might
2716 * actually be created by a
2717 * START_POST script */
2720 service_load_pid_file(s);
2721 service_search_main_pid(s);
2723 service_enter_start_post(s);
2725 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2729 case SERVICE_START_POST:
2731 service_load_pid_file(s);
2732 service_search_main_pid(s);
2735 s->reload_failure = !success;
2736 service_enter_running(s, true);
2739 case SERVICE_RELOAD:
2741 service_load_pid_file(s);
2742 service_search_main_pid(s);
2745 s->reload_failure = !success;
2746 service_enter_running(s, true);
2750 service_enter_signal(s, SERVICE_STOP_SIGTERM, success);
2753 case SERVICE_STOP_SIGTERM:
2754 case SERVICE_STOP_SIGKILL:
2755 if (main_pid_good(s) <= 0)
2756 service_enter_stop_post(s, success);
2758 /* If there is still a service
2759 * process around, wait until
2760 * that one quit, too */
2763 case SERVICE_STOP_POST:
2764 case SERVICE_FINAL_SIGTERM:
2765 case SERVICE_FINAL_SIGKILL:
2766 service_enter_dead(s, success, true);
2770 assert_not_reached("Uh, control process died at wrong time.");
2775 /* Notify clients about changed exit status */
2776 unit_add_to_dbus_queue(u);
2779 static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
2780 Service *s = SERVICE(u);
2783 assert(elapsed == 1);
2785 assert(w == &s->timer_watch);
2789 case SERVICE_START_PRE:
2791 log_warning("%s operation timed out. Terminating.", u->meta.id);
2792 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2795 case SERVICE_START_POST:
2796 log_warning("%s operation timed out. Stopping.", u->meta.id);
2797 service_enter_stop(s, false);
2800 case SERVICE_RELOAD:
2801 log_warning("%s operation timed out. Stopping.", u->meta.id);
2802 s->reload_failure = true;
2803 service_enter_running(s, true);
2807 log_warning("%s stopping timed out. Terminating.", u->meta.id);
2808 service_enter_signal(s, SERVICE_STOP_SIGTERM, false);
2811 case SERVICE_STOP_SIGTERM:
2812 if (s->exec_context.send_sigkill) {
2813 log_warning("%s stopping timed out. Killing.", u->meta.id);
2814 service_enter_signal(s, SERVICE_STOP_SIGKILL, false);
2816 log_warning("%s stopping timed out. Skipping SIGKILL.", u->meta.id);
2817 service_enter_stop_post(s, false);
2822 case SERVICE_STOP_SIGKILL:
2823 /* Uh, we sent a SIGKILL and it is still not gone?
2824 * Must be something we cannot kill, so let's just be
2825 * weirded out and continue */
2827 log_warning("%s still around after SIGKILL. Ignoring.", u->meta.id);
2828 service_enter_stop_post(s, false);
2831 case SERVICE_STOP_POST:
2832 log_warning("%s stopping timed out (2). Terminating.", u->meta.id);
2833 service_enter_signal(s, SERVICE_FINAL_SIGTERM, false);
2836 case SERVICE_FINAL_SIGTERM:
2837 if (s->exec_context.send_sigkill) {
2838 log_warning("%s stopping timed out (2). Killing.", u->meta.id);
2839 service_enter_signal(s, SERVICE_FINAL_SIGKILL, false);
2841 log_warning("%s stopping timed out (2). Skipping SIGKILL. Entering failed mode.", u->meta.id);
2842 service_enter_dead(s, false, true);
2847 case SERVICE_FINAL_SIGKILL:
2848 log_warning("%s still around after SIGKILL (2). Entering failed mode.", u->meta.id);
2849 service_enter_dead(s, false, true);
2852 case SERVICE_AUTO_RESTART:
2853 log_info("%s holdoff time over, scheduling restart.", u->meta.id);
2854 service_enter_restart(s);
2858 assert_not_reached("Timeout at wrong time.");
2862 static void service_cgroup_notify_event(Unit *u) {
2863 Service *s = SERVICE(u);
2867 log_debug("%s: cgroup is empty", u->meta.id);
2871 /* Waiting for SIGCHLD is usually more interesting,
2872 * because it includes return codes/signals. Which is
2873 * why we ignore the cgroup events for most cases,
2874 * except when we don't know pid which to expect the
2877 case SERVICE_RUNNING:
2878 service_enter_running(s, true);
2881 case SERVICE_STOP_SIGTERM:
2882 case SERVICE_STOP_SIGKILL:
2884 if (main_pid_good(s) <= 0 && !control_pid_good(s))
2885 service_enter_stop_post(s, true);
2889 case SERVICE_FINAL_SIGTERM:
2890 case SERVICE_FINAL_SIGKILL:
2891 if (main_pid_good(s) <= 0 && !control_pid_good(s))
2892 service_enter_dead(s, true, true);
2901 static void service_notify_message(Unit *u, pid_t pid, char **tags) {
2902 Service *s = SERVICE(u);
2907 if (s->notify_access == NOTIFY_NONE) {
2908 log_warning("%s: Got notification message from PID %lu, but reception is disabled.",
2909 u->meta.id, (unsigned long) pid);
2913 if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
2914 log_warning("%s: Got notification message from PID %lu, but reception only permitted for PID %lu",
2915 u->meta.id, (unsigned long) pid, (unsigned long) s->main_pid);
2919 log_debug("%s: Got message", u->meta.id);
2921 /* Interpret MAINPID= */
2922 if ((e = strv_find_prefix(tags, "MAINPID=")) &&
2923 (s->state == SERVICE_START ||
2924 s->state == SERVICE_START_POST ||
2925 s->state == SERVICE_RUNNING ||
2926 s->state == SERVICE_RELOAD)) {
2928 if (parse_pid(e + 8, &pid) < 0)
2929 log_warning("Failed to parse notification message %s", e);
2931 log_debug("%s: got %s", u->meta.id, e);
2932 service_set_main_pid(s, pid);
2936 /* Interpret READY= */
2937 if (s->type == SERVICE_NOTIFY &&
2938 s->state == SERVICE_START &&
2939 strv_find(tags, "READY=1")) {
2940 log_debug("%s: got READY=1", u->meta.id);
2942 service_enter_start_post(s);
2945 /* Interpret STATUS= */
2946 if ((e = strv_find_prefix(tags, "STATUS="))) {
2950 if (!(t = strdup(e+7))) {
2951 log_error("Failed to allocate string.");
2955 log_debug("%s: got %s", u->meta.id, e);
2957 free(s->status_text);
2960 free(s->status_text);
2961 s->status_text = NULL;
2966 /* Notify clients about changed status or main pid */
2967 unit_add_to_dbus_queue(u);
2970 #ifdef HAVE_SYSV_COMPAT
2971 static int service_enumerate(Manager *m) {
2975 char *path = NULL, *fpath = NULL, *name = NULL;
2976 Set *runlevel_services[ELEMENTSOF(rcnd_table)], *shutdown_services = NULL;
2983 if (m->running_as != MANAGER_SYSTEM)
2986 zero(runlevel_services);
2988 STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
2989 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
2993 path = join(*p, "/", rcnd_table[i].path, NULL);
3002 if (!(d = opendir(path))) {
3003 if (errno != ENOENT)
3004 log_warning("opendir() failed on %s: %s", path, strerror(errno));
3009 while ((de = readdir(d))) {
3012 if (ignore_file(de->d_name))
3015 if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
3018 if (strlen(de->d_name) < 4)
3021 a = undecchar(de->d_name[1]);
3022 b = undecchar(de->d_name[2]);
3028 fpath = join(path, "/", de->d_name, NULL);
3034 if (access(fpath, X_OK) < 0) {
3036 if (errno != ENOENT)
3037 log_warning("access() failed on %s: %s", fpath, strerror(errno));
3043 if (!(name = sysv_translate_name(de->d_name + 3))) {
3048 if ((r = manager_load_unit_prepare(m, name, NULL, NULL, &service)) < 0) {
3049 log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
3053 if (de->d_name[0] == 'S') {
3055 if (rcnd_table[i].type == RUNLEVEL_UP || rcnd_table[i].type == RUNLEVEL_SYSINIT) {
3056 SERVICE(service)->sysv_start_priority_from_rcnd =
3057 MAX(a*10 + b, SERVICE(service)->sysv_start_priority_from_rcnd);
3059 SERVICE(service)->sysv_enabled = true;
3062 if ((r = set_ensure_allocated(&runlevel_services[i], trivial_hash_func, trivial_compare_func)) < 0)
3065 if ((r = set_put(runlevel_services[i], service)) < 0)
3068 } else if (de->d_name[0] == 'K' &&
3069 (rcnd_table[i].type == RUNLEVEL_DOWN ||
3070 rcnd_table[i].type == RUNLEVEL_SYSINIT)) {
3072 if ((r = set_ensure_allocated(&shutdown_services, trivial_hash_func, trivial_compare_func)) < 0)
3075 if ((r = set_put(shutdown_services, service)) < 0)
3081 /* Now we loaded all stubs and are aware of the lowest
3082 start-up priority for all services, not let's actually load
3083 the services, this will also tell us which services are
3084 actually native now */
3085 manager_dispatch_load_queue(m);
3087 /* If this is a native service, rely on native ways to pull in
3088 * a service, don't pull it in via sysv rcN.d links. */
3089 for (i = 0; i < ELEMENTSOF(rcnd_table); i ++)
3090 SET_FOREACH(service, runlevel_services[i], j) {
3091 service = unit_follow_merge(service);
3093 if (service->meta.fragment_path)
3096 if ((r = unit_add_two_dependencies_by_name_inverse(service, UNIT_AFTER, UNIT_WANTS, rcnd_table[i].target, NULL, true)) < 0)
3100 /* We honour K links only for halt/reboot. For the normal
3101 * runlevels we assume the stop jobs will be implicitly added
3102 * by the core logic. Also, we don't really distinguish here
3103 * between the runlevels 0 and 6 and just add them to the
3104 * special shutdown target. On SUSE the boot.d/ runlevel is
3105 * also used for shutdown, so we add links for that too to the
3106 * shutdown target.*/
3107 SET_FOREACH(service, shutdown_services, j) {
3108 service = unit_follow_merge(service);
3110 if (service->meta.fragment_path)
3113 if ((r = unit_add_two_dependencies_by_name(service, UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true)) < 0)
3124 for (i = 0; i < ELEMENTSOF(rcnd_table); i++)
3125 set_free(runlevel_services[i]);
3126 set_free(shutdown_services);
3135 static void service_bus_name_owner_change(
3138 const char *old_owner,
3139 const char *new_owner) {
3141 Service *s = SERVICE(u);
3146 assert(streq(s->bus_name, name));
3147 assert(old_owner || new_owner);
3149 if (old_owner && new_owner)
3150 log_debug("%s's D-Bus name %s changed owner from %s to %s", u->meta.id, name, old_owner, new_owner);
3152 log_debug("%s's D-Bus name %s no longer registered by %s", u->meta.id, name, old_owner);
3154 log_debug("%s's D-Bus name %s now registered by %s", u->meta.id, name, new_owner);
3156 s->bus_name_good = !!new_owner;
3158 if (s->type == SERVICE_DBUS) {
3160 /* service_enter_running() will figure out what to
3162 if (s->state == SERVICE_RUNNING)
3163 service_enter_running(s, true);
3164 else if (s->state == SERVICE_START && new_owner)
3165 service_enter_start_post(s);
3167 } else if (new_owner &&
3169 (s->state == SERVICE_START ||
3170 s->state == SERVICE_START_POST ||
3171 s->state == SERVICE_RUNNING ||
3172 s->state == SERVICE_RELOAD)) {
3174 /* Try to acquire PID from bus service */
3175 log_debug("Trying to acquire PID from D-Bus name...");
3177 bus_query_pid(u->meta.manager, name);
3181 static void service_bus_query_pid_done(
3186 Service *s = SERVICE(u);
3191 log_debug("%s's D-Bus name %s is now owned by process %u", u->meta.id, name, (unsigned) pid);
3193 if (s->main_pid <= 0 &&
3194 (s->state == SERVICE_START ||
3195 s->state == SERVICE_START_POST ||
3196 s->state == SERVICE_RUNNING ||
3197 s->state == SERVICE_RELOAD))
3198 service_set_main_pid(s, pid);
3201 int service_set_socket_fd(Service *s, int fd, Socket *sock) {
3205 /* This is called by the socket code when instantiating a new
3206 * service for a stream socket and the socket needs to be
3209 if (s->meta.load_state != UNIT_LOADED)
3212 if (s->socket_fd >= 0)
3215 if (s->state != SERVICE_DEAD)
3219 s->got_socket_fd = true;
3220 s->accept_socket = sock;
3225 static void service_reset_failed(Unit *u) {
3226 Service *s = SERVICE(u);
3230 if (s->state == SERVICE_FAILED)
3231 service_set_state(s, SERVICE_DEAD);
3236 static bool service_need_daemon_reload(Unit *u) {
3237 Service *s = SERVICE(u);
3241 #ifdef HAVE_SYSV_COMPAT
3246 if (stat(s->sysv_path, &st) < 0)
3247 /* What, cannot access this anymore? */
3250 if (s->sysv_mtime > 0 &&
3251 timespec_load(&st.st_mtim) != s->sysv_mtime)
3259 static int service_kill(Unit *u, KillWho who, KillMode mode, int signo, DBusError *error) {
3260 Service *s = SERVICE(u);
3262 Set *pid_set = NULL;
3266 if (s->main_pid <= 0 && who == KILL_MAIN) {
3267 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No main process to kill");
3271 if (s->control_pid <= 0 && who == KILL_CONTROL) {
3272 dbus_set_error(error, BUS_ERROR_NO_SUCH_PROCESS, "No control process to kill");
3276 if (who == KILL_CONTROL || who == KILL_ALL)
3277 if (s->control_pid > 0)
3278 if (kill(s->control_pid, signo) < 0)
3281 if (who == KILL_MAIN || who == KILL_ALL)
3282 if (s->main_pid > 0)
3283 if (kill(s->main_pid, signo) < 0)
3286 if (who == KILL_ALL && mode == KILL_CONTROL_GROUP) {
3289 if (!(pid_set = set_new(trivial_hash_func, trivial_compare_func)))
3292 /* Exclude the control/main pid from being killed via the cgroup */
3293 if (s->control_pid > 0)
3294 if ((q = set_put(pid_set, LONG_TO_PTR(s->control_pid))) < 0) {
3299 if (s->main_pid > 0)
3300 if ((q = set_put(pid_set, LONG_TO_PTR(s->main_pid))) < 0) {
3305 if ((q = cgroup_bonding_kill_list(s->meta.cgroup_bondings, signo, false, pid_set)) < 0)
3306 if (q != -EAGAIN && q != -ESRCH && q != -ENOENT)
3317 static const char* const service_state_table[_SERVICE_STATE_MAX] = {
3318 [SERVICE_DEAD] = "dead",
3319 [SERVICE_START_PRE] = "start-pre",
3320 [SERVICE_START] = "start",
3321 [SERVICE_START_POST] = "start-post",
3322 [SERVICE_RUNNING] = "running",
3323 [SERVICE_EXITED] = "exited",
3324 [SERVICE_RELOAD] = "reload",
3325 [SERVICE_STOP] = "stop",
3326 [SERVICE_STOP_SIGTERM] = "stop-sigterm",
3327 [SERVICE_STOP_SIGKILL] = "stop-sigkill",
3328 [SERVICE_STOP_POST] = "stop-post",
3329 [SERVICE_FINAL_SIGTERM] = "final-sigterm",
3330 [SERVICE_FINAL_SIGKILL] = "final-sigkill",
3331 [SERVICE_FAILED] = "failed",
3332 [SERVICE_AUTO_RESTART] = "auto-restart",
3335 DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
3337 static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
3338 [SERVICE_RESTART_NO] = "no",
3339 [SERVICE_RESTART_ON_SUCCESS] = "on-success",
3340 [SERVICE_RESTART_ON_FAILURE] = "on-failure",
3341 [SERVICE_RESTART_ON_ABORT] = "on-abort",
3342 [SERVICE_RESTART_ALWAYS] = "always"
3345 DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
3347 static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
3348 [SERVICE_SIMPLE] = "simple",
3349 [SERVICE_FORKING] = "forking",
3350 [SERVICE_ONESHOT] = "oneshot",
3351 [SERVICE_DBUS] = "dbus",
3352 [SERVICE_NOTIFY] = "notify"
3355 DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
3357 static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_MAX] = {
3358 [SERVICE_EXEC_START_PRE] = "ExecStartPre",
3359 [SERVICE_EXEC_START] = "ExecStart",
3360 [SERVICE_EXEC_START_POST] = "ExecStartPost",
3361 [SERVICE_EXEC_RELOAD] = "ExecReload",
3362 [SERVICE_EXEC_STOP] = "ExecStop",
3363 [SERVICE_EXEC_STOP_POST] = "ExecStopPost",
3366 DEFINE_STRING_TABLE_LOOKUP(service_exec_command, ServiceExecCommand);
3368 static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
3369 [NOTIFY_NONE] = "none",
3370 [NOTIFY_MAIN] = "main",
3371 [NOTIFY_ALL] = "all"
3374 DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
3376 const UnitVTable service_vtable = {
3377 .suffix = ".service",
3382 .show_status = true,
3384 .init = service_init,
3385 .done = service_done,
3386 .load = service_load,
3388 .coldplug = service_coldplug,
3390 .dump = service_dump,
3392 .start = service_start,
3393 .stop = service_stop,
3394 .reload = service_reload,
3396 .can_reload = service_can_reload,
3398 .kill = service_kill,
3400 .serialize = service_serialize,
3401 .deserialize_item = service_deserialize_item,
3403 .active_state = service_active_state,
3404 .sub_state_to_string = service_sub_state_to_string,
3406 .check_gc = service_check_gc,
3407 .check_snapshot = service_check_snapshot,
3409 .sigchld_event = service_sigchld_event,
3410 .timer_event = service_timer_event,
3412 .reset_failed = service_reset_failed,
3414 .need_daemon_reload = service_need_daemon_reload,
3416 .cgroup_notify_empty = service_cgroup_notify_event,
3417 .notify_message = service_notify_message,
3419 .bus_name_owner_change = service_bus_name_owner_change,
3420 .bus_query_pid_done = service_bus_query_pid_done,
3422 .bus_interface = "org.freedesktop.systemd1.Service",
3423 .bus_message_handler = bus_service_message_handler,
3424 .bus_invalidating_properties = bus_service_invalidating_properties,
3426 #ifdef HAVE_SYSV_COMPAT
3427 .enumerate = service_enumerate