service.c revision 13b84ec7df103ce388910a2b868fe1668c1e27ef
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen/***
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen This file is part of systemd.
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen Copyright 2010 Lennart Poettering
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen systemd is free software; you can redistribute it and/or modify it
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen under the terms of the GNU Lesser General Public License as published by
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen the Free Software Foundation; either version 2.1 of the License, or
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen (at your option) any later version.
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen systemd is distributed in the hope that it will be useful, but
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen WITHOUT ANY WARRANTY; without even the implied warranty of
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen Lesser General Public License for more details.
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen You should have received a copy of the GNU Lesser General Public License
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen along with systemd; If not, see <http://www.gnu.org/licenses/>.
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen***/
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen#include <errno.h>
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen#include <signal.h>
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen#include <dirent.h>
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen#include <unistd.h>
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen#include <sys/reboot.h>
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen
1346b1f0388f4100bb3c2a2bb23bc881769c020cTom Gundersen#include "manager.h"
f5be560181d092c5f52a2b819aedcd48220f36abTom Gundersen#include "unit.h"
dd43110f781a9245ec00531456fee68ed763a179Tom Gundersen#include "service.h"
5c1d3fc93d91384bbac29adf01074fa4375317eaUmut Tezduyar Lindskog#include "load-fragment.h"
4138fb2c7936758da709eaed3f6b4f3df1d04effPatrik Flykt#include "load-dropin.h"
4138fb2c7936758da709eaed3f6b4f3df1d04effPatrik Flykt#include "log.h"
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen#include "strv.h"
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen#include "unit-name.h"
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen#include "unit-printf.h"
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen#include "dbus-service.h"
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen#include "special.h"
06f021a8048583d66202e3ac5cd0a12386d33ac2Tom Gundersen#include "dbus-common.h"
134e56dcc53970a20a858283650bb92cd5da1d17Lennart Poettering#include "exit-status.h"
3b653205cf7bd3851befd0a9f6a3ded6e267c173Lennart Poettering#include "def.h"
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen#include "path-util.h"
aba496a58acf9d9c61314de71353550e579f85eeUmut Tezduyar Lindskog#include "util.h"
4faefc7ff884eae65a80e82313fd9f4bb859d6dbLennart Poettering#include "utf8.h"
4faefc7ff884eae65a80e82313fd9f4bb859d6dbLennart Poettering#include "env-util.h"
aba496a58acf9d9c61314de71353550e579f85eeUmut Tezduyar Lindskog#include "fileio.h"
1a436809498faf6486815baa0338fb6b8e5def07Tom Gundersen
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen#ifdef HAVE_SYSV_COMPAT
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen#define DEFAULT_SYSV_TIMEOUT_USEC (5*USEC_PER_MINUTE)
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersentypedef enum RunlevelType {
11bf3cced13c885ca215c108cb0bdb7a148520d6Lennart Poettering RUNLEVEL_UP,
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen RUNLEVEL_DOWN
ed942a9eb22d50f667909ad6184b45015d28d054Tom Gundersen} RunlevelType;
ed942a9eb22d50f667909ad6184b45015d28d054Tom Gundersen
ed942a9eb22d50f667909ad6184b45015d28d054Tom Gundersenstatic const struct {
ed942a9eb22d50f667909ad6184b45015d28d054Tom Gundersen const char *path;
ed942a9eb22d50f667909ad6184b45015d28d054Tom Gundersen const char *target;
ed942a9eb22d50f667909ad6184b45015d28d054Tom Gundersen const RunlevelType type;
ed942a9eb22d50f667909ad6184b45015d28d054Tom Gundersen} rcnd_table[] = {
ed942a9eb22d50f667909ad6184b45015d28d054Tom Gundersen /* Standard SysV runlevels for start-up */
ed942a9eb22d50f667909ad6184b45015d28d054Tom Gundersen { "rc1.d", SPECIAL_RESCUE_TARGET, RUNLEVEL_UP },
bd8f65387673e29f46136a4ed172097035002c23Tom Gundersen { "rc2.d", SPECIAL_RUNLEVEL2_TARGET, RUNLEVEL_UP },
bd8f65387673e29f46136a4ed172097035002c23Tom Gundersen { "rc3.d", SPECIAL_RUNLEVEL3_TARGET, RUNLEVEL_UP },
bd8f65387673e29f46136a4ed172097035002c23Tom Gundersen { "rc4.d", SPECIAL_RUNLEVEL4_TARGET, RUNLEVEL_UP },
bd8f65387673e29f46136a4ed172097035002c23Tom Gundersen { "rc5.d", SPECIAL_RUNLEVEL5_TARGET, RUNLEVEL_UP },
bd8f65387673e29f46136a4ed172097035002c23Tom Gundersen
bd8f65387673e29f46136a4ed172097035002c23Tom Gundersen /* Standard SysV runlevels for shutdown */
bd8f65387673e29f46136a4ed172097035002c23Tom Gundersen { "rc0.d", SPECIAL_POWEROFF_TARGET, RUNLEVEL_DOWN },
bd8f65387673e29f46136a4ed172097035002c23Tom Gundersen { "rc6.d", SPECIAL_REBOOT_TARGET, RUNLEVEL_DOWN }
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen /* Note that the order here matters, as we read the
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen directories in this order, and we want to make sure that
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen sysv_start_priority is known when we first load the
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen unit. And that value we only know from S links. Hence
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen UP must be read before DOWN */
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen};
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen#define RUNLEVELS_UP "12345"
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen#endif
edb85f0d8d0a84f27308a3728f3fde3c52b9dce2Susant Sahani
edb85f0d8d0a84f27308a3728f3fde3c52b9dce2Susant Sahanistatic const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
2cc412b59353576cece2d5b30c6a39c70552f0a0Tom Gundersen [SERVICE_DEAD] = UNIT_INACTIVE,
2cc412b59353576cece2d5b30c6a39c70552f0a0Tom Gundersen [SERVICE_START_PRE] = UNIT_ACTIVATING,
2cc412b59353576cece2d5b30c6a39c70552f0a0Tom Gundersen [SERVICE_START] = UNIT_ACTIVATING,
edbb03e95a3c31bf719d5c6c46eec14d0bcb9c8fTom Gundersen [SERVICE_START_POST] = UNIT_ACTIVATING,
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen [SERVICE_RUNNING] = UNIT_ACTIVE,
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen [SERVICE_EXITED] = UNIT_ACTIVE,
1a436809498faf6486815baa0338fb6b8e5def07Tom Gundersen [SERVICE_RELOAD] = UNIT_RELOADING,
1a436809498faf6486815baa0338fb6b8e5def07Tom Gundersen [SERVICE_STOP] = UNIT_DEACTIVATING,
6a0a2f860f1ca4a10932da3b41dbc3c0139757ccTom Gundersen [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
ed942a9eb22d50f667909ad6184b45015d28d054Tom Gundersen [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
5be4d38e31281727b6f45ae869136bb01a1f7790Tom Gundersen [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
bcb7a07e0a785bda1eed658e984ff6b4a11cba9aTom Gundersen [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
4f882b2a5007e51032459e29d15a86df6b5ea9f4Tom Gundersen [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
1346b1f0388f4100bb3c2a2bb23bc881769c020cTom Gundersen [SERVICE_FAILED] = UNIT_FAILED,
ad0734e890b25751ef8229e47210ff11ae8fa3f3Tom Gundersen [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING
4cc7a82c9490a3c5ae03b1d6d168ce40ba499e23Eugene Yakubovich};
f5de5b00204f041aaec828d336c8afd9e860a5c3Tom Gundersen
eb27aeca247a4cf8816fffc4c0dbcab55ead3864Tom Gundersen/* For Type=idle we never want to delay any other jobs, hence we
e1ea665edac17d75fce01b72dadfa3211b60df2cEugene Yakubovich * consider idle jobs active as soon as we start working on them */
84b5b79a8f7b423c5b7cad4170eb68d57fe5e26cAngus Gibsonstatic const UnitActiveState state_translation_table_idle[_SERVICE_STATE_MAX] = {
5c1d3fc93d91384bbac29adf01074fa4375317eaUmut Tezduyar Lindskog [SERVICE_DEAD] = UNIT_INACTIVE,
bfa695b5cc37aeb78737c57c84e9e69ea08152c0Tom Gundersen [SERVICE_START_PRE] = UNIT_ACTIVE,
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen [SERVICE_START] = UNIT_ACTIVE,
dd43110f781a9245ec00531456fee68ed763a179Tom Gundersen [SERVICE_START_POST] = UNIT_ACTIVE,
dd43110f781a9245ec00531456fee68ed763a179Tom Gundersen [SERVICE_RUNNING] = UNIT_ACTIVE,
e1853b00ef7cb56cafd908327dd44b3ab48b402cSusant Sahani [SERVICE_EXITED] = UNIT_ACTIVE,
e1853b00ef7cb56cafd908327dd44b3ab48b402cSusant Sahani [SERVICE_RELOAD] = UNIT_RELOADING,
c106cc36b9b8e8998eb95299b02f1db9c1209122Tom Gundersen [SERVICE_STOP] = UNIT_DEACTIVATING,
c106cc36b9b8e8998eb95299b02f1db9c1209122Tom Gundersen [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
c106cc36b9b8e8998eb95299b02f1db9c1209122Tom Gundersen [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
f048a16b464295a4e0a4f4c1210f06343ad31231Tom Gundersen [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
f048a16b464295a4e0a4f4c1210f06343ad31231Tom Gundersen [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
6ae115c1fe95611b39d2f20cfcea3d385429f59eTom Gundersen [SERVICE_FAILED] = UNIT_FAILED,
6ae115c1fe95611b39d2f20cfcea3d385429f59eTom Gundersen [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING
6ae115c1fe95611b39d2f20cfcea3d385429f59eTom Gundersen};
67272d157a35e5cda4e5c904eafdcc23d20541d1Tom Gundersen
6192b846ca0d15602e94ddb5da4420b7c60d64a5Tom Gundersenstatic void service_init(Unit *u) {
06f021a8048583d66202e3ac5cd0a12386d33ac2Tom Gundersen Service *s = SERVICE(u);
bd8f65387673e29f46136a4ed172097035002c23Tom Gundersen
bd8f65387673e29f46136a4ed172097035002c23Tom Gundersen assert(u);
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen assert(u->load_state == UNIT_STUB);
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen s->timeout_start_usec = DEFAULT_TIMEOUT_USEC;
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen s->timeout_stop_usec = DEFAULT_TIMEOUT_USEC;
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen s->restart_usec = DEFAULT_RESTART_USEC;
16aa63a00b5b1db23a9c0b8de350ebf482d90cd0Tom Gundersen s->type = _SERVICE_TYPE_INVALID;
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen
0dd25fb9f005d8ab7ac4bc10a609d00569f8c56aLennart Poettering watch_init(&s->watchdog_watch);
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen watch_init(&s->timer_watch);
5c1d3fc93d91384bbac29adf01074fa4375317eaUmut Tezduyar Lindskog
81163121e649523b4071f67ddc03c2db649036c5Tom Gundersen#ifdef HAVE_SYSV_COMPAT
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen s->sysv_start_priority = -1;
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen s->sysv_start_priority_from_rcnd = -1;
eb0ea358b688a6f83ff305c6b825c61f12b6dcb8Tom Gundersen#endif
aba496a58acf9d9c61314de71353550e579f85eeUmut Tezduyar Lindskog s->socket_fd = -1;
8cd11a0f0f4ca05199e1166f6a07472b296f7455Tom Gundersen s->guess_main_pid = true;
5d3de3fe9cc452f1bfe3c2dcafecbd7f904da4dcLennart Poettering
c081882f07617e56bcbce54105068137e4e0bb52Susant Sahani exec_context_init(&s->exec_context);
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen kill_context_init(&s->kill_context);
3d3d425547a3f38473fcf8737b85dfebb630479dTom Gundersen cgroup_context_init(&s->cgroup_context);
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen RATELIMIT_INIT(s->start_limit, 10*USEC_PER_SEC, 5);
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
16aa63a00b5b1db23a9c0b8de350ebf482d90cd0Tom Gundersen}
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen
0dd25fb9f005d8ab7ac4bc10a609d00569f8c56aLennart Poetteringstatic void service_unwatch_control_pid(Service *s) {
6ae115c1fe95611b39d2f20cfcea3d385429f59eTom Gundersen assert(s);
9e7e440835c43d81ffdbc299d2c07daaa641ed50Tom Gundersen
5c1d3fc93d91384bbac29adf01074fa4375317eaUmut Tezduyar Lindskog if (s->control_pid <= 0)
5c1d3fc93d91384bbac29adf01074fa4375317eaUmut Tezduyar Lindskog return;
28cc555d8504c9429776aedbbe1fee7101258578Dan Williams
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen unit_unwatch_pid(UNIT(s), s->control_pid);
5d3de3fe9cc452f1bfe3c2dcafecbd7f904da4dcLennart Poettering s->control_pid = 0;
5d3de3fe9cc452f1bfe3c2dcafecbd7f904da4dcLennart Poettering}
9e7e440835c43d81ffdbc299d2c07daaa641ed50Tom Gundersen
46b0c76e2c355c0d0cc4792abb98cde07b28bc53Emil Renner Berthingstatic void service_unwatch_main_pid(Service *s) {
6ae115c1fe95611b39d2f20cfcea3d385429f59eTom Gundersen assert(s);
3d3d425547a3f38473fcf8737b85dfebb630479dTom Gundersen
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen if (s->main_pid <= 0)
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen return;
11bf3cced13c885ca215c108cb0bdb7a148520d6Lennart Poettering
11bf3cced13c885ca215c108cb0bdb7a148520d6Lennart Poettering unit_unwatch_pid(UNIT(s), s->main_pid);
11bf3cced13c885ca215c108cb0bdb7a148520d6Lennart Poettering s->main_pid = 0;
0dd25fb9f005d8ab7ac4bc10a609d00569f8c56aLennart Poettering}
11bf3cced13c885ca215c108cb0bdb7a148520d6Lennart Poettering
11bf3cced13c885ca215c108cb0bdb7a148520d6Lennart Poetteringstatic void service_unwatch_pid_file(Service *s) {
11bf3cced13c885ca215c108cb0bdb7a148520d6Lennart Poettering if (!s->pid_file_pathspec)
11bf3cced13c885ca215c108cb0bdb7a148520d6Lennart Poettering return;
11bf3cced13c885ca215c108cb0bdb7a148520d6Lennart Poettering
11bf3cced13c885ca215c108cb0bdb7a148520d6Lennart Poettering log_debug_unit(UNIT(s)->id, "Stopping watch for %s's PID file %s",
11bf3cced13c885ca215c108cb0bdb7a148520d6Lennart Poettering UNIT(s)->id, s->pid_file_pathspec->path);
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen path_spec_unwatch(s->pid_file_pathspec, UNIT(s));
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen path_spec_done(s->pid_file_pathspec);
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen free(s->pid_file_pathspec);
1346b1f0388f4100bb3c2a2bb23bc881769c020cTom Gundersen s->pid_file_pathspec = NULL;
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen}
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersenstatic int service_set_main_pid(Service *s, pid_t pid) {
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen pid_t ppid;
bbf7c04821a71fec67eaf0e7a34d17afc5913c13Tom Gundersen
bbf7c04821a71fec67eaf0e7a34d17afc5913c13Tom Gundersen assert(s);
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen
52433f6b65eccd1c54606dde999610640f3458acTom Gundersen if (pid <= 1)
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen return -EINVAL;
11bf3cced13c885ca215c108cb0bdb7a148520d6Lennart Poettering
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen if (pid == getpid())
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen return -EINVAL;
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen service_unwatch_main_pid(s);
2ad8416dd057e7e3185169609ca3006e7649f576Zbigniew Jędrzejewski-Szmek
2ad8416dd057e7e3185169609ca3006e7649f576Zbigniew Jędrzejewski-Szmek s->main_pid = pid;
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen s->main_pid_known = true;
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen if (get_parent_of_pid(pid, &ppid) >= 0 && ppid != getpid()) {
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen log_warning_unit(UNIT(s)->id,
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen "%s: Supervising process %lu which is not our child. We'll most likely not notice when it exits.",
02b59d57e0c08231645120077f651151f5bb2babTom Gundersen UNIT(s)->id, (unsigned long) pid);
02b59d57e0c08231645120077f651151f5bb2babTom Gundersen
02b59d57e0c08231645120077f651151f5bb2babTom Gundersen s->main_pid_alien = true;
505f8da7325591defe5f751f328bd26915267602Tom Gundersen } else
45af44d47da6933b260c734ad9ff721f63f80a4dTom Gundersen s->main_pid_alien = false;
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen
f882c247ad59776c3a7753bb963c1f8e2386cb79Tom Gundersen exec_status_start(&s->main_exec_status, pid);
505f8da7325591defe5f751f328bd26915267602Tom Gundersen
1346b1f0388f4100bb3c2a2bb23bc881769c020cTom Gundersen return 0;
f882c247ad59776c3a7753bb963c1f8e2386cb79Tom Gundersen}
bbf7c04821a71fec67eaf0e7a34d17afc5913c13Tom Gundersen
3bef724f7e7f7eaca69881548b06e221b77d7031Tom Gundersenstatic void service_close_socket_fd(Service *s) {
0dd25fb9f005d8ab7ac4bc10a609d00569f8c56aLennart Poettering assert(s);
11bf3cced13c885ca215c108cb0bdb7a148520d6Lennart Poettering
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen if (s->socket_fd < 0)
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen return;
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen close_nointr_nofail(s->socket_fd);
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen s->socket_fd = -1;
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen}
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersenstatic void service_connection_unref(Service *s) {
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen assert(s);
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen if (!UNIT_ISSET(s->accept_socket))
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen return;
505f8da7325591defe5f751f328bd26915267602Tom Gundersen
505f8da7325591defe5f751f328bd26915267602Tom Gundersen socket_connection_unref(SOCKET(UNIT_DEREF(s->accept_socket)));
505f8da7325591defe5f751f328bd26915267602Tom Gundersen unit_ref_unset(&s->accept_socket);
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen}
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen
69a93e7db47addc4495a6ec9dc0fc74092a6ebeeTom Gundersenstatic void service_stop_watchdog(Service *s) {
02b59d57e0c08231645120077f651151f5bb2babTom Gundersen assert(s);
02b59d57e0c08231645120077f651151f5bb2babTom Gundersen
02b59d57e0c08231645120077f651151f5bb2babTom Gundersen unit_unwatch_timer(UNIT(s), &s->watchdog_watch);
6192b846ca0d15602e94ddb5da4420b7c60d64a5Tom Gundersen s->watchdog_timestamp.realtime = 0;
6192b846ca0d15602e94ddb5da4420b7c60d64a5Tom Gundersen s->watchdog_timestamp.monotonic = 0;
6192b846ca0d15602e94ddb5da4420b7c60d64a5Tom Gundersen}
6192b846ca0d15602e94ddb5da4420b7c60d64a5Tom Gundersen
6192b846ca0d15602e94ddb5da4420b7c60d64a5Tom Gundersenstatic void service_enter_signal(Service *s, ServiceState state, ServiceResult f);
6192b846ca0d15602e94ddb5da4420b7c60d64a5Tom Gundersen
6192b846ca0d15602e94ddb5da4420b7c60d64a5Tom Gundersenstatic void service_handle_watchdog(Service *s) {
6192b846ca0d15602e94ddb5da4420b7c60d64a5Tom Gundersen usec_t offset;
6192b846ca0d15602e94ddb5da4420b7c60d64a5Tom Gundersen int r;
6192b846ca0d15602e94ddb5da4420b7c60d64a5Tom Gundersen
6192b846ca0d15602e94ddb5da4420b7c60d64a5Tom Gundersen assert(s);
7951dea20911969287878e6897b3eca348721adeSusant Sahani
7951dea20911969287878e6897b3eca348721adeSusant Sahani if (s->watchdog_usec == 0)
7951dea20911969287878e6897b3eca348721adeSusant Sahani return;
7951dea20911969287878e6897b3eca348721adeSusant Sahani
7951dea20911969287878e6897b3eca348721adeSusant Sahani offset = now(CLOCK_MONOTONIC) - s->watchdog_timestamp.monotonic;
7951dea20911969287878e6897b3eca348721adeSusant Sahani if (offset >= s->watchdog_usec) {
7951dea20911969287878e6897b3eca348721adeSusant Sahani log_error_unit(UNIT(s)->id, "%s watchdog timeout!", UNIT(s)->id);
7951dea20911969287878e6897b3eca348721adeSusant Sahani service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_WATCHDOG);
7951dea20911969287878e6897b3eca348721adeSusant Sahani return;
7951dea20911969287878e6897b3eca348721adeSusant Sahani }
7951dea20911969287878e6897b3eca348721adeSusant Sahani
7951dea20911969287878e6897b3eca348721adeSusant Sahani r = unit_watch_timer(UNIT(s), CLOCK_MONOTONIC, true, s->watchdog_usec - offset, &s->watchdog_watch);
7951dea20911969287878e6897b3eca348721adeSusant Sahani if (r < 0)
7951dea20911969287878e6897b3eca348721adeSusant Sahani log_warning_unit(UNIT(s)->id,
7951dea20911969287878e6897b3eca348721adeSusant Sahani "%s failed to install watchdog timer: %s",
7951dea20911969287878e6897b3eca348721adeSusant Sahani UNIT(s)->id, strerror(-r));
7951dea20911969287878e6897b3eca348721adeSusant Sahani}
7951dea20911969287878e6897b3eca348721adeSusant Sahani
7951dea20911969287878e6897b3eca348721adeSusant Sahanistatic void service_reset_watchdog(Service *s) {
7951dea20911969287878e6897b3eca348721adeSusant Sahani assert(s);
7951dea20911969287878e6897b3eca348721adeSusant Sahani
7951dea20911969287878e6897b3eca348721adeSusant Sahani dual_timestamp_get(&s->watchdog_timestamp);
85a8eeee36b57c1ab382b0225fa9a87525bbeee9Susant Sahani service_handle_watchdog(s);
85a8eeee36b57c1ab382b0225fa9a87525bbeee9Susant Sahani}
85a8eeee36b57c1ab382b0225fa9a87525bbeee9Susant Sahani
85a8eeee36b57c1ab382b0225fa9a87525bbeee9Susant Sahanistatic void service_done(Unit *u) {
85a8eeee36b57c1ab382b0225fa9a87525bbeee9Susant Sahani Service *s = SERVICE(u);
85a8eeee36b57c1ab382b0225fa9a87525bbeee9Susant Sahani
85a8eeee36b57c1ab382b0225fa9a87525bbeee9Susant Sahani assert(s);
85a8eeee36b57c1ab382b0225fa9a87525bbeee9Susant Sahani
85a8eeee36b57c1ab382b0225fa9a87525bbeee9Susant Sahani free(s->pid_file);
85a8eeee36b57c1ab382b0225fa9a87525bbeee9Susant Sahani s->pid_file = NULL;
85a8eeee36b57c1ab382b0225fa9a87525bbeee9Susant Sahani
02b59d57e0c08231645120077f651151f5bb2babTom Gundersen#ifdef HAVE_SYSV_COMPAT
c0dda18697e0994272c0c9616d36f6777b60e2c7Tom Gundersen free(s->sysv_runlevels);
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen s->sysv_runlevels = NULL;
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen#endif
f048a16b464295a4e0a4f4c1210f06343ad31231Tom Gundersen
28cc555d8504c9429776aedbbe1fee7101258578Dan Williams free(s->status_text);
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen s->status_text = NULL;
f882c247ad59776c3a7753bb963c1f8e2386cb79Tom Gundersen
5c1d3fc93d91384bbac29adf01074fa4375317eaUmut Tezduyar Lindskog cgroup_context_done(&s->cgroup_context);
5c1d3fc93d91384bbac29adf01074fa4375317eaUmut Tezduyar Lindskog exec_context_done(&s->exec_context, manager_is_reloading_or_reexecuting(u->manager));
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen s->control_command = NULL;
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen s->main_command = NULL;
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen set_free(s->restart_ignore_status.code);
71a6151083d842b2f5bf04e50239f0bf85d34d2eTom Gundersen s->restart_ignore_status.code = NULL;
71a6151083d842b2f5bf04e50239f0bf85d34d2eTom Gundersen set_free(s->restart_ignore_status.signal);
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen s->restart_ignore_status.signal = NULL;
6ae115c1fe95611b39d2f20cfcea3d385429f59eTom Gundersen
6ae115c1fe95611b39d2f20cfcea3d385429f59eTom Gundersen set_free(s->success_status.code);
6ae115c1fe95611b39d2f20cfcea3d385429f59eTom Gundersen s->success_status.code = NULL;
6ae115c1fe95611b39d2f20cfcea3d385429f59eTom Gundersen set_free(s->success_status.signal);
5d8e593dce074bff966fc0a46579c61b4f3bc33aSusant Sahani s->success_status.signal = NULL;
5d8e593dce074bff966fc0a46579c61b4f3bc33aSusant Sahani
5d8e593dce074bff966fc0a46579c61b4f3bc33aSusant Sahani /* This will leak a process, but at least no memory or any of
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen * our resources */
f048a16b464295a4e0a4f4c1210f06343ad31231Tom Gundersen service_unwatch_main_pid(s);
f048a16b464295a4e0a4f4c1210f06343ad31231Tom Gundersen service_unwatch_control_pid(s);
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen service_unwatch_pid_file(s);
f882c247ad59776c3a7753bb963c1f8e2386cb79Tom Gundersen
aba496a58acf9d9c61314de71353550e579f85eeUmut Tezduyar Lindskog if (s->bus_name) {
407fe036a24834203aca6c1eec7d74d9ad3e9ee0Tom Gundersen unit_unwatch_bus_name(u, s->bus_name);
9505d3c6deda0452c22ab2ed47bca74b98d87a17Tom Gundersen free(s->bus_name);
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen s->bus_name = NULL;
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen }
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen service_close_socket_fd(s);
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen service_connection_unref(s);
71a6151083d842b2f5bf04e50239f0bf85d34d2eTom Gundersen
71a6151083d842b2f5bf04e50239f0bf85d34d2eTom Gundersen unit_ref_unset(&s->accept_socket);
f579559b3a14c1f1ef96c372e7626c4733e6ef7dTom Gundersen
eb0ea358b688a6f83ff305c6b825c61f12b6dcb8Tom Gundersen service_stop_watchdog(s);
eb0ea358b688a6f83ff305c6b825c61f12b6dcb8Tom Gundersen
eb0ea358b688a6f83ff305c6b825c61f12b6dcb8Tom Gundersen unit_unwatch_timer(u, &s->timer_watch);
eb0ea358b688a6f83ff305c6b825c61f12b6dcb8Tom Gundersen}
6ae115c1fe95611b39d2f20cfcea3d385429f59eTom Gundersen
6ae115c1fe95611b39d2f20cfcea3d385429f59eTom Gundersen#ifdef HAVE_SYSV_COMPAT
6ae115c1fe95611b39d2f20cfcea3d385429f59eTom Gundersenstatic char *sysv_translate_name(const char *name) {
6ae115c1fe95611b39d2f20cfcea3d385429f59eTom Gundersen char *r;
ed942a9eb22d50f667909ad6184b45015d28d054Tom Gundersen
ed942a9eb22d50f667909ad6184b45015d28d054Tom Gundersen r = new(char, strlen(name) + sizeof(".service"));
ed942a9eb22d50f667909ad6184b45015d28d054Tom Gundersen if (!r)
ed942a9eb22d50f667909ad6184b45015d28d054Tom Gundersen return NULL;
ed942a9eb22d50f667909ad6184b45015d28d054Tom Gundersen
ed942a9eb22d50f667909ad6184b45015d28d054Tom Gundersen if (endswith(name, ".sh"))
ed942a9eb22d50f667909ad6184b45015d28d054Tom Gundersen /* Drop .sh suffix */
ed942a9eb22d50f667909ad6184b45015d28d054Tom Gundersen strcpy(stpcpy(r, name) - 3, ".service");
ed942a9eb22d50f667909ad6184b45015d28d054Tom Gundersen else
bd8f65387673e29f46136a4ed172097035002c23Tom Gundersen /* Normal init script name */
bd8f65387673e29f46136a4ed172097035002c23Tom Gundersen strcpy(stpcpy(r, name), ".service");
bd8f65387673e29f46136a4ed172097035002c23Tom Gundersen
bd8f65387673e29f46136a4ed172097035002c23Tom Gundersen return r;
bd8f65387673e29f46136a4ed172097035002c23Tom Gundersen}
bd8f65387673e29f46136a4ed172097035002c23Tom Gundersen
bd8f65387673e29f46136a4ed172097035002c23Tom Gundersenstatic int sysv_translate_facility(const char *name, const char *filename, char **_r) {
bd8f65387673e29f46136a4ed172097035002c23Tom Gundersen
bd8f65387673e29f46136a4ed172097035002c23Tom Gundersen /* We silently ignore the $ prefix here. According to the LSB
11bf3cced13c885ca215c108cb0bdb7a148520d6Lennart Poettering * spec it simply indicates whether something is a
11bf3cced13c885ca215c108cb0bdb7a148520d6Lennart Poettering * standardized name or a distribution-specific one. Since we
0dd25fb9f005d8ab7ac4bc10a609d00569f8c56aLennart Poettering * just follow what already exists and do not introduce new
0dd25fb9f005d8ab7ac4bc10a609d00569f8c56aLennart Poettering * uses or names we don't care who introduced a new name. */
11bf3cced13c885ca215c108cb0bdb7a148520d6Lennart Poettering
11bf3cced13c885ca215c108cb0bdb7a148520d6Lennart Poettering static const char * const table[] = {
11bf3cced13c885ca215c108cb0bdb7a148520d6Lennart Poettering /* LSB defined facilities */
"local_fs", NULL,
"network", SPECIAL_NETWORK_TARGET,
"named", SPECIAL_NSS_LOOKUP_TARGET,
"portmap", SPECIAL_RPCBIND_TARGET,
"remote_fs", SPECIAL_REMOTE_FS_TARGET,
"syslog", NULL,
"time", SPECIAL_TIME_SYNC_TARGET,
};
unsigned i;
char *r;
const char *n;
assert(name);
assert(_r);
n = *name == '$' ? name + 1 : name;
for (i = 0; i < ELEMENTSOF(table); i += 2) {
if (!streq(table[i], n))
continue;
if (!table[i+1])
return 0;
r = strdup(table[i+1]);
if (!r)
return log_oom();
goto finish;
}
/* If we don't know this name, fallback heuristics to figure
* out whether something is a target or a service alias. */
if (*name == '$') {
if (!unit_prefix_is_valid(n))
return -EINVAL;
/* Facilities starting with $ are most likely targets */
r = unit_name_build(n, NULL, ".target");
} else if (filename && streq(name, filename))
/* Names equaling the file name of the services are redundant */
return 0;
else
/* Everything else we assume to be normal service names */
r = sysv_translate_name(n);
if (!r)
return -ENOMEM;
finish:
*_r = r;
return 1;
}
static int sysv_fix_order(Service *s) {
Unit *other;
int r;
assert(s);
if (s->sysv_start_priority < 0)
return 0;
/* For each pair of services where at least one lacks a LSB
* header, we use the start priority value to order things. */
LIST_FOREACH(units_by_type, other, UNIT(s)->manager->units_by_type[UNIT_SERVICE]) {
Service *t;
UnitDependency d;
bool special_s, special_t;
t = SERVICE(other);
if (s == t)
continue;
if (UNIT(t)->load_state != UNIT_LOADED)
continue;
if (t->sysv_start_priority < 0)
continue;
/* If both units have modern headers we don't care
* about the priorities */
if ((UNIT(s)->fragment_path || s->sysv_has_lsb) &&
(UNIT(t)->fragment_path || t->sysv_has_lsb))
continue;
special_s = s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels);
special_t = t->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, t->sysv_runlevels);
if (special_t && !special_s)
d = UNIT_AFTER;
else if (special_s && !special_t)
d = UNIT_BEFORE;
else if (t->sysv_start_priority < s->sysv_start_priority)
d = UNIT_AFTER;
else if (t->sysv_start_priority > s->sysv_start_priority)
d = UNIT_BEFORE;
else
continue;
/* FIXME: Maybe we should compare the name here lexicographically? */
if ((r = unit_add_dependency(UNIT(s), d, UNIT(t), true)) < 0)
return r;
}
return 0;
}
static ExecCommand *exec_command_new(const char *path, const char *arg1) {
ExecCommand *c;
if (!(c = new0(ExecCommand, 1)))
return NULL;
if (!(c->path = strdup(path))) {
free(c);
return NULL;
}
if (!(c->argv = strv_new(path, arg1, NULL))) {
free(c->path);
free(c);
return NULL;
}
return c;
}
static int sysv_exec_commands(Service *s, const bool supports_reload) {
ExecCommand *c;
assert(s);
assert(s->is_sysv);
assert(UNIT(s)->source_path);
c = exec_command_new(UNIT(s)->source_path, "start");
if (!c)
return -ENOMEM;
exec_command_append_list(s->exec_command+SERVICE_EXEC_START, c);
c = exec_command_new(UNIT(s)->source_path, "stop");
if (!c)
return -ENOMEM;
exec_command_append_list(s->exec_command+SERVICE_EXEC_STOP, c);
if (supports_reload) {
c = exec_command_new(UNIT(s)->source_path, "reload");
if (!c)
return -ENOMEM;
exec_command_append_list(s->exec_command+SERVICE_EXEC_RELOAD, c);
}
return 0;
}
static bool usage_contains_reload(const char *line) {
return (strcasestr(line, "{reload|") ||
strcasestr(line, "{reload}") ||
strcasestr(line, "{reload\"") ||
strcasestr(line, "|reload|") ||
strcasestr(line, "|reload}") ||
strcasestr(line, "|reload\""));
}
static int service_load_sysv_path(Service *s, const char *path) {
FILE *f;
Unit *u;
unsigned line = 0;
int r;
enum {
NORMAL,
DESCRIPTION,
LSB,
LSB_DESCRIPTION,
USAGE_CONTINUATION
} state = NORMAL;
char *short_description = NULL, *long_description = NULL, *chkconfig_description = NULL, *description;
struct stat st;
bool supports_reload = false;
assert(s);
assert(path);
u = UNIT(s);
f = fopen(path, "re");
if (!f) {
r = errno == ENOENT ? 0 : -errno;
goto finish;
}
if (fstat(fileno(f), &st) < 0) {
r = -errno;
goto finish;
}
free(u->source_path);
u->source_path = strdup(path);
if (!u->source_path) {
r = -ENOMEM;
goto finish;
}
u->source_mtime = timespec_load(&st.st_mtim);
if (null_or_empty(&st)) {
u->load_state = UNIT_MASKED;
r = 0;
goto finish;
}
s->is_sysv = true;
while (!feof(f)) {
char l[LINE_MAX], *t;
if (!fgets(l, sizeof(l), f)) {
if (feof(f))
break;
r = -errno;
log_error_unit(u->id,
"Failed to read configuration file '%s': %s",
path, strerror(-r));
goto finish;
}
line++;
t = strstrip(l);
if (*t != '#') {
/* Try to figure out whether this init script supports
* the reload operation. This heuristic looks for
* "Usage" lines which include the reload option. */
if ( state == USAGE_CONTINUATION ||
(state == NORMAL && strcasestr(t, "usage"))) {
if (usage_contains_reload(t)) {
supports_reload = true;
state = NORMAL;
} else if (t[strlen(t)-1] == '\\')
state = USAGE_CONTINUATION;
else
state = NORMAL;
}
continue;
}
if (state == NORMAL && streq(t, "### BEGIN INIT INFO")) {
state = LSB;
s->sysv_has_lsb = true;
continue;
}
if ((state == LSB_DESCRIPTION || state == LSB) && streq(t, "### END INIT INFO")) {
state = NORMAL;
continue;
}
t++;
t += strspn(t, WHITESPACE);
if (state == NORMAL) {
/* Try to parse Red Hat style chkconfig headers */
if (startswith_no_case(t, "chkconfig:")) {
int start_priority;
char runlevels[16], *k;
state = NORMAL;
if (sscanf(t+10, "%15s %i %*i",
runlevels,
&start_priority) != 2) {
log_warning_unit(u->id,
"[%s:%u] Failed to parse chkconfig line. Ignoring.",
path, line);
continue;
}
/* A start priority gathered from the
* symlink farms is preferred over the
* data from the LSB header. */
if (start_priority < 0 || start_priority > 99)
log_warning_unit(u->id,
"[%s:%u] Start priority out of range. Ignoring.",
path, line);
else
s->sysv_start_priority = start_priority;
char_array_0(runlevels);
k = delete_chars(runlevels, WHITESPACE "-");
if (k[0]) {
char *d;
if (!(d = strdup(k))) {
r = -ENOMEM;
goto finish;
}
free(s->sysv_runlevels);
s->sysv_runlevels = d;
}
} else if (startswith_no_case(t, "description:")) {
size_t k = strlen(t);
char *d;
const char *j;
if (t[k-1] == '\\') {
state = DESCRIPTION;
t[k-1] = 0;
}
if ((j = strstrip(t+12)) && *j) {
if (!(d = strdup(j))) {
r = -ENOMEM;
goto finish;
}
} else
d = NULL;
free(chkconfig_description);
chkconfig_description = d;
} else if (startswith_no_case(t, "pidfile:")) {
char *fn;
state = NORMAL;
fn = strstrip(t+8);
if (!path_is_absolute(fn)) {
log_warning_unit(u->id,
"[%s:%u] PID file not absolute. Ignoring.",
path, line);
continue;
}
if (!(fn = strdup(fn))) {
r = -ENOMEM;
goto finish;
}
free(s->pid_file);
s->pid_file = fn;
}
} else if (state == DESCRIPTION) {
/* Try to parse Red Hat style description
* continuation */
size_t k = strlen(t);
char *j;
if (t[k-1] == '\\')
t[k-1] = 0;
else
state = NORMAL;
if ((j = strstrip(t)) && *j) {
char *d = NULL;
if (chkconfig_description)
d = strjoin(chkconfig_description, " ", j, NULL);
else
d = strdup(j);
if (!d) {
r = -ENOMEM;
goto finish;
}
free(chkconfig_description);
chkconfig_description = d;
}
} else if (state == LSB || state == LSB_DESCRIPTION) {
if (startswith_no_case(t, "Provides:")) {
char *i, *w;
size_t z;
state = LSB;
FOREACH_WORD_QUOTED(w, z, t+9, i) {
char *n, *m;
if (!(n = strndup(w, z))) {
r = -ENOMEM;
goto finish;
}
r = sysv_translate_facility(n, path_get_file_name(path), &m);
free(n);
if (r < 0)
goto finish;
if (r == 0)
continue;
if (unit_name_to_type(m) == UNIT_SERVICE)
r = unit_merge_by_name(u, m);
else
/* NB: SysV targets
* which are provided
* by a service are
* pulled in by the
* services, as an
* indication that the
* generic service is
* now available. This
* is strictly
* one-way. The
* targets do NOT pull
* in the SysV
* services! */
r = unit_add_two_dependencies_by_name(u, UNIT_BEFORE, UNIT_WANTS, m, NULL, true);
if (r < 0)
log_error_unit(u->id,
"[%s:%u] Failed to add LSB Provides name %s, ignoring: %s",
path, line, m, strerror(-r));
free(m);
}
} else if (startswith_no_case(t, "Required-Start:") ||
startswith_no_case(t, "Should-Start:") ||
startswith_no_case(t, "X-Start-Before:") ||
startswith_no_case(t, "X-Start-After:")) {
char *i, *w;
size_t z;
state = LSB;
FOREACH_WORD_QUOTED(w, z, strchr(t, ':')+1, i) {
char *n, *m;
if (!(n = strndup(w, z))) {
r = -ENOMEM;
goto finish;
}
r = sysv_translate_facility(n, path_get_file_name(path), &m);
if (r < 0) {
log_error_unit(u->id,
"[%s:%u] Failed to translate LSB dependency %s, ignoring: %s",
path, line, n, strerror(-r));
free(n);
continue;
}
free(n);
if (r == 0)
continue;
r = unit_add_dependency_by_name(u, startswith_no_case(t, "X-Start-Before:") ? UNIT_BEFORE : UNIT_AFTER, m, NULL, true);
if (r < 0)
log_error_unit(u->id, "[%s:%u] Failed to add dependency on %s, ignoring: %s",
path, line, m, strerror(-r));
free(m);
}
} else if (startswith_no_case(t, "Default-Start:")) {
char *k, *d;
state = LSB;
k = delete_chars(t+14, WHITESPACE "-");
if (k[0] != 0) {
if (!(d = strdup(k))) {
r = -ENOMEM;
goto finish;
}
free(s->sysv_runlevels);
s->sysv_runlevels = d;
}
} else if (startswith_no_case(t, "Description:")) {
char *d, *j;
state = LSB_DESCRIPTION;
if ((j = strstrip(t+12)) && *j) {
if (!(d = strdup(j))) {
r = -ENOMEM;
goto finish;
}
} else
d = NULL;
free(long_description);
long_description = d;
} else if (startswith_no_case(t, "Short-Description:")) {
char *d, *j;
state = LSB;
if ((j = strstrip(t+18)) && *j) {
if (!(d = strdup(j))) {
r = -ENOMEM;
goto finish;
}
} else
d = NULL;
free(short_description);
short_description = d;
} else if (state == LSB_DESCRIPTION) {
if (startswith(l, "#\t") || startswith(l, "# ")) {
char *j;
if ((j = strstrip(t)) && *j) {
char *d = NULL;
if (long_description)
d = strjoin(long_description, " ", t, NULL);
else
d = strdup(j);
if (!d) {
r = -ENOMEM;
goto finish;
}
free(long_description);
long_description = d;
}
} else
state = LSB;
}
}
}
if ((r = sysv_exec_commands(s, supports_reload)) < 0)
goto finish;
if (s->sysv_runlevels && !chars_intersect(RUNLEVELS_UP, s->sysv_runlevels)) {
/* If there a runlevels configured for this service
* but none of the standard ones, then we assume this
* is some special kind of service (which might be
* needed for early boot) and don't create any links
* to it. */
UNIT(s)->default_dependencies = false;
/* Don't timeout special services during boot (like fsck) */
s->timeout_start_usec = 0;
s->timeout_stop_usec = 0;
} else {
s->timeout_start_usec = DEFAULT_SYSV_TIMEOUT_USEC;
s->timeout_stop_usec = DEFAULT_SYSV_TIMEOUT_USEC;
}
/* Special setting for all SysV services */
s->type = SERVICE_FORKING;
s->remain_after_exit = !s->pid_file;
s->guess_main_pid = false;
s->restart = SERVICE_RESTART_NO;
s->exec_context.ignore_sigpipe = false;
s->kill_context.kill_mode = KILL_PROCESS;
/* We use the long description only if
* no short description is set. */
if (short_description)
description = short_description;
else if (chkconfig_description)
description = chkconfig_description;
else if (long_description)
description = long_description;
else
description = NULL;
if (description) {
char *d;
if (!(d = strappend(s->sysv_has_lsb ? "LSB: " : "SYSV: ", description))) {
r = -ENOMEM;
goto finish;
}
u->description = d;
}
/* The priority that has been set in /etc/rcN.d/ hierarchies
* takes precedence over what is stored as default in the LSB
* header */
if (s->sysv_start_priority_from_rcnd >= 0)
s->sysv_start_priority = s->sysv_start_priority_from_rcnd;
u->load_state = UNIT_LOADED;
r = 0;
finish:
if (f)
fclose(f);
free(short_description);
free(long_description);
free(chkconfig_description);
return r;
}
static int service_load_sysv_name(Service *s, const char *name) {
char **p;
assert(s);
assert(name);
/* For SysV services we strip the *.sh suffixes. */
if (endswith(name, ".sh.service"))
return -ENOENT;
STRV_FOREACH(p, UNIT(s)->manager->lookup_paths.sysvinit_path) {
char *path;
int r;
path = strjoin(*p, "/", name, NULL);
if (!path)
return -ENOMEM;
assert(endswith(path, ".service"));
path[strlen(path)-8] = 0;
r = service_load_sysv_path(s, path);
if (r >= 0 && UNIT(s)->load_state == UNIT_STUB) {
/* Try *.sh source'able init scripts */
strcat(path, ".sh");
r = service_load_sysv_path(s, path);
}
free(path);
if (r < 0)
return r;
if (UNIT(s)->load_state != UNIT_STUB)
break;
}
return 0;
}
static int service_load_sysv(Service *s) {
const char *t;
Iterator i;
int r;
assert(s);
/* Load service data from SysV init scripts, preferably with
* LSB headers ... */
if (strv_isempty(UNIT(s)->manager->lookup_paths.sysvinit_path))
return 0;
if ((t = UNIT(s)->id))
if ((r = service_load_sysv_name(s, t)) < 0)
return r;
if (UNIT(s)->load_state == UNIT_STUB)
SET_FOREACH(t, UNIT(s)->names, i) {
if (t == UNIT(s)->id)
continue;
if ((r = service_load_sysv_name(s, t)) < 0)
return r;
if (UNIT(s)->load_state != UNIT_STUB)
break;
}
return 0;
}
#endif
static int fsck_fix_order(Service *s) {
Unit *other;
int r;
assert(s);
if (s->fsck_passno <= 0)
return 0;
/* For each pair of services where both have an fsck priority
* we order things based on it. */
LIST_FOREACH(units_by_type, other, UNIT(s)->manager->units_by_type[UNIT_SERVICE]) {
Service *t;
UnitDependency d;
t = SERVICE(other);
if (s == t)
continue;
if (UNIT(t)->load_state != UNIT_LOADED)
continue;
if (t->fsck_passno <= 0)
continue;
if (t->fsck_passno < s->fsck_passno)
d = UNIT_AFTER;
else if (t->fsck_passno > s->fsck_passno)
d = UNIT_BEFORE;
else
continue;
r = unit_add_dependency(UNIT(s), d, UNIT(t), true);
if (r < 0)
return r;
}
return 0;
}
static int service_verify(Service *s) {
assert(s);
if (UNIT(s)->load_state != UNIT_LOADED)
return 0;
if (!s->exec_command[SERVICE_EXEC_START]) {
log_error_unit(UNIT(s)->id,
"%s lacks ExecStart setting. Refusing.", UNIT(s)->id);
return -EINVAL;
}
if (s->type != SERVICE_ONESHOT &&
s->exec_command[SERVICE_EXEC_START]->command_next) {
log_error_unit(UNIT(s)->id,
"%s has more than one ExecStart setting, which is only allowed for Type=oneshot services. Refusing.", UNIT(s)->id);
return -EINVAL;
}
if (s->type == SERVICE_ONESHOT && s->restart != SERVICE_RESTART_NO) {
log_error_unit(UNIT(s)->id,
"%s has Restart setting other than no, which isn't allowed for Type=oneshot services. Refusing.", UNIT(s)->id);
return -EINVAL;
}
if (s->type == SERVICE_DBUS && !s->bus_name) {
log_error_unit(UNIT(s)->id,
"%s is of type D-Bus but no D-Bus service name has been specified. Refusing.", UNIT(s)->id);
return -EINVAL;
}
if (s->bus_name && s->type != SERVICE_DBUS)
log_warning_unit(UNIT(s)->id,
"%s has a D-Bus service name specified, but is not of type dbus. Ignoring.", UNIT(s)->id);
if (s->exec_context.pam_name && s->kill_context.kill_mode != KILL_CONTROL_GROUP) {
log_error_unit(UNIT(s)->id,
"%s has PAM enabled. Kill mode must be set to 'control-group'. Refusing.", UNIT(s)->id);
return -EINVAL;
}
return 0;
}
static int service_add_default_dependencies(Service *s) {
int r;
assert(s);
/* Add a number of automatic dependencies useful for the
* majority of services. */
/* First, pull in base system */
if (UNIT(s)->manager->running_as == SYSTEMD_SYSTEM) {
r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES,
SPECIAL_BASIC_TARGET, NULL, true);
if (r < 0)
return r;
} else if (UNIT(s)->manager->running_as == SYSTEMD_USER) {
r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES,
SPECIAL_SOCKETS_TARGET, NULL, true);
if (r < 0)
return r;
r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES,
SPECIAL_TIMERS_TARGET, NULL, true);
if (r < 0)
return r;
r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES,
SPECIAL_PATHS_TARGET, NULL, true);
if (r < 0)
return r;
}
/* Second, activate normal shutdown */
r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS,
SPECIAL_SHUTDOWN_TARGET, NULL, true);
return r;
}
static void service_fix_output(Service *s) {
assert(s);
/* If nothing has been explicitly configured, patch default
* output in. If input is socket/tty we avoid this however,
* since in that case we want output to default to the same
* place as we read input from. */
if (s->exec_context.std_error == EXEC_OUTPUT_INHERIT &&
s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
s->exec_context.std_input == EXEC_INPUT_NULL)
s->exec_context.std_error = UNIT(s)->manager->default_std_error;
if (s->exec_context.std_output == EXEC_OUTPUT_INHERIT &&
s->exec_context.std_input == EXEC_INPUT_NULL)
s->exec_context.std_output = UNIT(s)->manager->default_std_output;
}
static int service_load(Unit *u) {
int r;
Service *s = SERVICE(u);
assert(s);
/* Load a .service file */
r = unit_load_fragment(u);
if (r < 0)
return r;
#ifdef HAVE_SYSV_COMPAT
/* Load a classic init script as a fallback, if we couldn't find anything */
if (u->load_state == UNIT_STUB) {
r = service_load_sysv(s);
if (r < 0)
return r;
}
#endif
/* Still nothing found? Then let's give up */
if (u->load_state == UNIT_STUB)
return -ENOENT;
/* This is a new unit? Then let's add in some extras */
if (u->load_state == UNIT_LOADED) {
/* We were able to load something, then let's add in
* the dropin directories. */
r = unit_load_dropin(u);
if (r < 0)
return r;
if (s->type == _SERVICE_TYPE_INVALID)
s->type = s->bus_name ? SERVICE_DBUS : SERVICE_SIMPLE;
/* Oneshot services have disabled start timeout by default */
if (s->type == SERVICE_ONESHOT && !s->start_timeout_defined)
s->timeout_start_usec = 0;
service_fix_output(s);
r = unit_add_exec_dependencies(u, &s->exec_context);
if (r < 0)
return r;
r = unit_add_default_slice(u);
if (r < 0)
return r;
#ifdef HAVE_SYSV_COMPAT
r = sysv_fix_order(s);
if (r < 0)
return r;
#endif
r = fsck_fix_order(s);
if (r < 0)
return r;
if (s->bus_name)
if ((r = unit_watch_bus_name(u, s->bus_name)) < 0)
return r;
if (s->type == SERVICE_NOTIFY && s->notify_access == NOTIFY_NONE)
s->notify_access = NOTIFY_MAIN;
if (s->watchdog_usec > 0 && s->notify_access == NOTIFY_NONE)
s->notify_access = NOTIFY_MAIN;
if (s->type == SERVICE_DBUS || s->bus_name) {
r = unit_add_two_dependencies_by_name(u, UNIT_AFTER, UNIT_REQUIRES,
SPECIAL_DBUS_SOCKET, NULL, true);
if (r < 0)
return r;
}
if (UNIT(s)->default_dependencies) {
r = service_add_default_dependencies(s);
if (r < 0)
return r;
}
r = unit_exec_context_defaults(u, &s->exec_context);
if (r < 0)
return r;
}
return service_verify(s);
}
static void service_dump(Unit *u, FILE *f, const char *prefix) {
ServiceExecCommand c;
Service *s = SERVICE(u);
const char *prefix2;
_cleanup_free_ char *p2 = NULL;
assert(s);
p2 = strappend(prefix, "\t");
prefix2 = p2 ? p2 : prefix;
fprintf(f,
"%sService State: %s\n"
"%sResult: %s\n"
"%sReload Result: %s\n"
"%sPermissionsStartOnly: %s\n"
"%sRootDirectoryStartOnly: %s\n"
"%sRemainAfterExit: %s\n"
"%sGuessMainPID: %s\n"
"%sType: %s\n"
"%sRestart: %s\n"
"%sNotifyAccess: %s\n",
prefix, service_state_to_string(s->state),
prefix, service_result_to_string(s->result),
prefix, service_result_to_string(s->reload_result),
prefix, yes_no(s->permissions_start_only),
prefix, yes_no(s->root_directory_start_only),
prefix, yes_no(s->remain_after_exit),
prefix, yes_no(s->guess_main_pid),
prefix, service_type_to_string(s->type),
prefix, service_restart_to_string(s->restart),
prefix, notify_access_to_string(s->notify_access));
if (s->control_pid > 0)
fprintf(f,
"%sControl PID: %lu\n",
prefix, (unsigned long) s->control_pid);
if (s->main_pid > 0)
fprintf(f,
"%sMain PID: %lu\n"
"%sMain PID Known: %s\n"
"%sMain PID Alien: %s\n",
prefix, (unsigned long) s->main_pid,
prefix, yes_no(s->main_pid_known),
prefix, yes_no(s->main_pid_alien));
if (s->pid_file)
fprintf(f,
"%sPIDFile: %s\n",
prefix, s->pid_file);
if (s->bus_name)
fprintf(f,
"%sBusName: %s\n"
"%sBus Name Good: %s\n",
prefix, s->bus_name,
prefix, yes_no(s->bus_name_good));
kill_context_dump(&s->kill_context, f, prefix);
exec_context_dump(&s->exec_context, f, prefix);
for (c = 0; c < _SERVICE_EXEC_COMMAND_MAX; c++) {
if (!s->exec_command[c])
continue;
fprintf(f, "%s-> %s:\n",
prefix, service_exec_command_to_string(c));
exec_command_dump_list(s->exec_command[c], f, prefix2);
}
#ifdef HAVE_SYSV_COMPAT
if (s->is_sysv)
fprintf(f,
"%sSysV Init Script has LSB Header: %s\n"
"%sSysVEnabled: %s\n",
prefix, yes_no(s->sysv_has_lsb),
prefix, yes_no(s->sysv_enabled));
if (s->sysv_start_priority >= 0)
fprintf(f,
"%sSysVStartPriority: %i\n",
prefix, s->sysv_start_priority);
if (s->sysv_runlevels)
fprintf(f, "%sSysVRunLevels: %s\n",
prefix, s->sysv_runlevels);
#endif
if (s->fsck_passno > 0)
fprintf(f,
"%sFsckPassNo: %i\n",
prefix, s->fsck_passno);
if (s->status_text)
fprintf(f, "%sStatus Text: %s\n",
prefix, s->status_text);
}
static int service_load_pid_file(Service *s, bool may_warn) {
_cleanup_free_ char *k = NULL;
int r;
pid_t pid;
assert(s);
if (!s->pid_file)
return -ENOENT;
r = read_one_line_file(s->pid_file, &k);
if (r < 0) {
if (may_warn)
log_info_unit(UNIT(s)->id,
"PID file %s not readable (yet?) after %s.",
s->pid_file, service_state_to_string(s->state));
return r;
}
r = parse_pid(k, &pid);
if (r < 0) {
if (may_warn)
log_info_unit(UNIT(s)->id,
"Failed to read PID from file %s: %s",
s->pid_file, strerror(-r));
return r;
}
if (kill(pid, 0) < 0 && errno != EPERM) {
if (may_warn)
log_info_unit(UNIT(s)->id,
"PID %lu read from file %s does not exist.",
(unsigned long) pid, s->pid_file);
return -ESRCH;
}
if (s->main_pid_known) {
if (pid == s->main_pid)
return 0;
log_debug_unit(UNIT(s)->id,
"Main PID changing: %lu -> %lu",
(unsigned long) s->main_pid, (unsigned long) pid);
service_unwatch_main_pid(s);
s->main_pid_known = false;
} else
log_debug_unit(UNIT(s)->id,
"Main PID loaded: %lu", (unsigned long) pid);
r = service_set_main_pid(s, pid);
if (r < 0)
return r;
r = unit_watch_pid(UNIT(s), pid);
if (r < 0) {
/* FIXME: we need to do something here */
log_warning_unit(UNIT(s)->id,
"Failed to watch PID %lu from service %s",
(unsigned long) pid, UNIT(s)->id);
return r;
}
return 0;
}
static int service_search_main_pid(Service *s) {
pid_t pid;
int r;
assert(s);
/* If we know it anyway, don't ever fallback to unreliable
* heuristics */
if (s->main_pid_known)
return 0;
if (!s->guess_main_pid)
return 0;
assert(s->main_pid <= 0);
pid = unit_search_main_pid(UNIT(s));
if (pid <= 0)
return -ENOENT;
log_debug_unit(UNIT(s)->id,
"Main PID guessed: %lu", (unsigned long) pid);
r = service_set_main_pid(s, pid);
if (r < 0)
return r;
r = unit_watch_pid(UNIT(s), pid);
if (r < 0)
/* FIXME: we need to do something here */
log_warning_unit(UNIT(s)->id,
"Failed to watch PID %lu from service %s",
(unsigned long) pid, UNIT(s)->id);
return r;
return 0;
}
static void service_set_state(Service *s, ServiceState state) {
ServiceState old_state;
const UnitActiveState *table;
assert(s);
table = s->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table;
old_state = s->state;
s->state = state;
service_unwatch_pid_file(s);
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)
unit_unwatch_timer(UNIT(s), &s->timer_watch);
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) {
service_unwatch_main_pid(s);
s->main_command = NULL;
}
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) {
service_unwatch_control_pid(s);
s->control_command = NULL;
s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
}
if (state != SERVICE_START_PRE &&
state != SERVICE_START &&
state != SERVICE_START_POST &&
state != SERVICE_RUNNING &&
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_DEAD && UNIT(s)->job)) {
service_close_socket_fd(s);
service_connection_unref(s);
}
if (state == SERVICE_STOP || state == SERVICE_STOP_SIGTERM)
service_stop_watchdog(s);
/* For the inactive states unit_notify() will trim the cgroup,
* but for exit we have to do that ourselves... */
if (state == SERVICE_EXITED && UNIT(s)->manager->n_reloading <= 0)
unit_destroy_cgroup(UNIT(s));
if (old_state != state)
log_debug_unit(UNIT(s)->id,
"%s changed %s -> %s", UNIT(s)->id,
service_state_to_string(old_state),
service_state_to_string(state));
unit_notify(UNIT(s), table[old_state], table[state], s->reload_result == SERVICE_SUCCESS);
s->reload_result = SERVICE_SUCCESS;
}
static int service_coldplug(Unit *u) {
Service *s = SERVICE(u);
int r;
assert(s);
assert(s->state == SERVICE_DEAD);
if (s->deserialized_state != s->state) {
if (s->deserialized_state == SERVICE_START_PRE ||
s->deserialized_state == SERVICE_START ||
s->deserialized_state == SERVICE_START_POST ||
s->deserialized_state == SERVICE_RELOAD ||
s->deserialized_state == SERVICE_STOP ||
s->deserialized_state == SERVICE_STOP_SIGTERM ||
s->deserialized_state == SERVICE_STOP_SIGKILL ||
s->deserialized_state == SERVICE_STOP_POST ||
s->deserialized_state == SERVICE_FINAL_SIGTERM ||
s->deserialized_state == SERVICE_FINAL_SIGKILL ||
s->deserialized_state == SERVICE_AUTO_RESTART) {
if (s->deserialized_state == SERVICE_AUTO_RESTART || s->timeout_start_usec > 0) {
usec_t k;
k = s->deserialized_state == SERVICE_AUTO_RESTART ? s->restart_usec : s->timeout_start_usec;
r = unit_watch_timer(UNIT(s), CLOCK_MONOTONIC, true, k, &s->timer_watch);
if (r < 0)
return r;
}
}
if ((s->deserialized_state == SERVICE_START &&
(s->type == SERVICE_FORKING ||
s->type == SERVICE_DBUS ||
s->type == SERVICE_ONESHOT ||
s->type == SERVICE_NOTIFY)) ||
s->deserialized_state == SERVICE_START_POST ||
s->deserialized_state == SERVICE_RUNNING ||
s->deserialized_state == SERVICE_RELOAD ||
s->deserialized_state == SERVICE_STOP ||
s->deserialized_state == SERVICE_STOP_SIGTERM ||
s->deserialized_state == SERVICE_STOP_SIGKILL)
if (s->main_pid > 0) {
r = unit_watch_pid(UNIT(s), s->main_pid);
if (r < 0)
return r;
}
if (s->deserialized_state == SERVICE_START_PRE ||
s->deserialized_state == SERVICE_START ||
s->deserialized_state == SERVICE_START_POST ||
s->deserialized_state == SERVICE_RELOAD ||
s->deserialized_state == SERVICE_STOP ||
s->deserialized_state == SERVICE_STOP_SIGTERM ||
s->deserialized_state == SERVICE_STOP_SIGKILL ||
s->deserialized_state == SERVICE_STOP_POST ||
s->deserialized_state == SERVICE_FINAL_SIGTERM ||
s->deserialized_state == SERVICE_FINAL_SIGKILL)
if (s->control_pid > 0) {
r = unit_watch_pid(UNIT(s), s->control_pid);
if (r < 0)
return r;
}
if (s->deserialized_state == SERVICE_START_POST ||
s->deserialized_state == SERVICE_RUNNING)
service_handle_watchdog(s);
service_set_state(s, s->deserialized_state);
}
return 0;
}
static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
Iterator i;
int r;
int *rfds = NULL;
unsigned rn_fds = 0;
Unit *u;
assert(s);
assert(fds);
assert(n_fds);
if (s->socket_fd >= 0)
return 0;
SET_FOREACH(u, UNIT(s)->dependencies[UNIT_TRIGGERED_BY], i) {
int *cfds;
unsigned cn_fds;
Socket *sock;
if (u->type != UNIT_SOCKET)
continue;
sock = SOCKET(u);
r = socket_collect_fds(sock, &cfds, &cn_fds);
if (r < 0)
goto fail;
if (!cfds)
continue;
if (!rfds) {
rfds = cfds;
rn_fds = cn_fds;
} else {
int *t;
t = new(int, rn_fds+cn_fds);
if (!t) {
free(cfds);
r = -ENOMEM;
goto fail;
}
memcpy(t, rfds, rn_fds * sizeof(int));
memcpy(t+rn_fds, cfds, cn_fds * sizeof(int));
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,
bool apply_permissions,
bool apply_chroot,
bool apply_tty_stdin,
bool set_notify_socket,
bool is_control,
pid_t *_pid) {
pid_t pid;
int r;
int *fds = NULL;
_cleanup_free_ int *fdsbuf = NULL;
unsigned n_fds = 0, n_env = 0;
_cleanup_strv_free_ char
**argv = NULL, **final_env = NULL, **our_env = NULL;
const char *path;
assert(s);
assert(c);
assert(_pid);
unit_realize_cgroup(UNIT(s));
if (pass_fds ||
s->exec_context.std_input == EXEC_INPUT_SOCKET ||
s->exec_context.std_output == EXEC_OUTPUT_SOCKET ||
s->exec_context.std_error == EXEC_OUTPUT_SOCKET) {
if (s->socket_fd >= 0) {
fds = &s->socket_fd;
n_fds = 1;
} else {
r = service_collect_fds(s, &fdsbuf, &n_fds);
if (r < 0)
goto fail;
fds = fdsbuf;
}
}
if (timeout && s->timeout_start_usec) {
r = unit_watch_timer(UNIT(s), CLOCK_MONOTONIC, true,
s->timeout_start_usec, &s->timer_watch);
if (r < 0)
goto fail;
} else
unit_unwatch_timer(UNIT(s), &s->timer_watch);
r = unit_full_printf_strv(UNIT(s), c->argv, &argv);
if (r < 0)
goto fail;
our_env = new0(char*, 5);
if (!our_env) {
r = -ENOMEM;
goto fail;
}
if (set_notify_socket)
if (asprintf(our_env + n_env++, "NOTIFY_SOCKET=%s", UNIT(s)->manager->notify_socket) < 0) {
r = -ENOMEM;
goto fail;
}
if (s->main_pid > 0)
if (asprintf(our_env + n_env++, "MAINPID=%lu", (unsigned long) s->main_pid) < 0) {
r = -ENOMEM;
goto fail;
}
if (s->watchdog_usec > 0)
if (asprintf(our_env + n_env++, "WATCHDOG_USEC=%llu", (unsigned long long) s->watchdog_usec) < 0) {
r = -ENOMEM;
goto fail;
}
if (UNIT(s)->manager->running_as != SYSTEMD_SYSTEM)
if (asprintf(our_env + n_env++, "MANAGERPID=%lu", (unsigned long) getpid()) < 0) {
r = -ENOMEM;
goto fail;
}
final_env = strv_env_merge(2, UNIT(s)->manager->environment, our_env, NULL);
if (!final_env) {
r = -ENOMEM;
goto fail;
}
if (is_control && UNIT(s)->cgroup_path) {
path = strappenda(UNIT(s)->cgroup_path, "/control");
cg_create(SYSTEMD_CGROUP_CONTROLLER, path);
} else
path = UNIT(s)->cgroup_path;
r = exec_spawn(c,
argv,
&s->exec_context,
fds, n_fds,
final_env,
apply_permissions,
apply_chroot,
apply_tty_stdin,
UNIT(s)->manager->confirm_spawn,
UNIT(s)->manager->cgroup_supported,
path,
UNIT(s)->id,
s->type == SERVICE_IDLE ? UNIT(s)->manager->idle_pipe : NULL,
&pid);
if (r < 0)
goto fail;
r = unit_watch_pid(UNIT(s), pid);
if (r < 0)
/* FIXME: we need to do something here */
goto fail;
*_pid = pid;
return 0;
fail:
if (timeout)
unit_unwatch_timer(UNIT(s), &s->timer_watch);
return r;
}
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) {
/* If it's an alien child let's check if it is still
* alive ... */
if (s->main_pid_alien && s->main_pid > 0)
return kill(s->main_pid, 0) >= 0 || errno != ESRCH;
/* .. otherwise assume we'll get a SIGCHLD for it,
* which we really should wait for to collect exit
* status and code */
return s->main_pid > 0;
}
/* We don't know the pid */
return -EAGAIN;
}
_pure_ static int control_pid_good(Service *s) {
assert(s);
return s->control_pid > 0;
}
static int cgroup_good(Service *s) {
int r;
assert(s);
if (!UNIT(s)->cgroup_path)
return 0;
r = cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, UNIT(s)->cgroup_path, true);
if (r < 0)
return r;
return !r;
}
static void service_enter_dead(Service *s, ServiceResult f, bool allow_restart) {
int r;
assert(s);
if (f != SERVICE_SUCCESS)
s->result = f;
service_set_state(s, s->result != SERVICE_SUCCESS ? SERVICE_FAILED : SERVICE_DEAD);
if (allow_restart &&
!s->forbid_restart &&
(s->restart == SERVICE_RESTART_ALWAYS ||
(s->restart == SERVICE_RESTART_ON_SUCCESS && s->result == SERVICE_SUCCESS) ||
(s->restart == SERVICE_RESTART_ON_FAILURE && s->result != SERVICE_SUCCESS) ||
(s->restart == SERVICE_RESTART_ON_WATCHDOG && s->result == SERVICE_FAILURE_WATCHDOG) ||
(s->restart == SERVICE_RESTART_ON_ABORT && (s->result == SERVICE_FAILURE_SIGNAL ||
s->result == SERVICE_FAILURE_CORE_DUMP))) &&
(s->result != SERVICE_FAILURE_EXIT_CODE ||
!set_contains(s->restart_ignore_status.code, INT_TO_PTR(s->main_exec_status.status))) &&
(s->result != SERVICE_FAILURE_SIGNAL ||
!set_contains(s->restart_ignore_status.signal, INT_TO_PTR(s->main_exec_status.status)))
) {
r = unit_watch_timer(UNIT(s), CLOCK_MONOTONIC, true, s->restart_usec, &s->timer_watch);
if (r < 0)
goto fail;
service_set_state(s, SERVICE_AUTO_RESTART);
}
s->forbid_restart = false;
/* we want fresh tmpdirs in case service is started again immediately */
exec_context_tmp_dirs_done(&s->exec_context);
/* Try to delete the pid file. At this point it will be
* out-of-date, and some software might be confused by it, so
* let's remove it. */
if (s->pid_file)
unlink_noerrno(s->pid_file);
return;
fail:
log_warning_unit(UNIT(s)->id,
"%s failed to run install restart timer: %s",
UNIT(s)->id, strerror(-r));
service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
}
static void service_enter_stop_post(Service *s, ServiceResult f) {
int r;
assert(s);
if (f != SERVICE_SUCCESS)
s->result = f;
service_unwatch_control_pid(s);
s->control_command = s->exec_command[SERVICE_EXEC_STOP_POST];
if (s->control_command) {
s->control_command_id = SERVICE_EXEC_STOP_POST;
r = service_spawn(s,
s->control_command,
true,
false,
!s->permissions_start_only,
!s->root_directory_start_only,
true,
false,
true,
&s->control_pid);
if (r < 0)
goto fail;
service_set_state(s, SERVICE_STOP_POST);
} else
service_enter_dead(s, SERVICE_SUCCESS, true);
return;
fail:
log_warning_unit(UNIT(s)->id,
"%s failed to run 'stop-post' task: %s",
UNIT(s)->id, strerror(-r));
service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
}
static void service_enter_signal(Service *s, ServiceState state, ServiceResult f) {
int r;
assert(s);
if (f != SERVICE_SUCCESS)
s->result = f;
r = unit_kill_context(
UNIT(s),
&s->kill_context,
state != SERVICE_STOP_SIGTERM && state != SERVICE_FINAL_SIGTERM,
s->main_pid,
s->control_pid,
s->main_pid_alien);
if (r < 0)
goto fail;
if (r > 0) {
if (s->timeout_stop_usec > 0) {
r = unit_watch_timer(UNIT(s), CLOCK_MONOTONIC, true,
s->timeout_stop_usec, &s->timer_watch);
if (r < 0)
goto fail;
}
service_set_state(s, state);
} else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
service_enter_stop_post(s, SERVICE_SUCCESS);
else
service_enter_dead(s, SERVICE_SUCCESS, true);
return;
fail:
log_warning_unit(UNIT(s)->id,
"%s failed to kill processes: %s", UNIT(s)->id, strerror(-r));
if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL)
service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES);
else
service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
}
static void service_enter_stop(Service *s, ServiceResult f) {
int r;
assert(s);
if (f != SERVICE_SUCCESS)
s->result = f;
service_unwatch_control_pid(s);
s->control_command = s->exec_command[SERVICE_EXEC_STOP];
if (s->control_command) {
s->control_command_id = SERVICE_EXEC_STOP;
r = service_spawn(s,
s->control_command,
true,
false,
!s->permissions_start_only,
!s->root_directory_start_only,
false,
false,
true,
&s->control_pid);
if (r < 0)
goto fail;
service_set_state(s, SERVICE_STOP);
} else
service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS);
return;
fail:
log_warning_unit(UNIT(s)->id,
"%s failed to run 'stop' task: %s", UNIT(s)->id, strerror(-r));
service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
}
static void service_enter_running(Service *s, ServiceResult f) {
int main_pid_ok, cgroup_ok;
assert(s);
if (f != SERVICE_SUCCESS)
s->result = f;
main_pid_ok = main_pid_good(s);
cgroup_ok = cgroup_good(s);
if ((main_pid_ok > 0 || (main_pid_ok < 0 && cgroup_ok != 0)) &&
(s->bus_name_good || s->type != SERVICE_DBUS))
service_set_state(s, SERVICE_RUNNING);
else if (s->remain_after_exit)
service_set_state(s, SERVICE_EXITED);
else
service_enter_stop(s, SERVICE_SUCCESS);
}
static void service_enter_start_post(Service *s) {
int r;
assert(s);
service_unwatch_control_pid(s);
if (s->watchdog_usec > 0)
service_reset_watchdog(s);
s->control_command = s->exec_command[SERVICE_EXEC_START_POST];
if (s->control_command) {
s->control_command_id = SERVICE_EXEC_START_POST;
r = service_spawn(s,
s->control_command,
true,
false,
!s->permissions_start_only,
!s->root_directory_start_only,
false,
false,
true,
&s->control_pid);
if (r < 0)
goto fail;
service_set_state(s, SERVICE_START_POST);
} else
service_enter_running(s, SERVICE_SUCCESS);
return;
fail:
log_warning_unit(UNIT(s)->id,
"%s failed to run 'start-post' task: %s", UNIT(s)->id, strerror(-r));
service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
}
static void service_kill_control_processes(Service *s) {
char *p;
if (!UNIT(s)->cgroup_path)
return;
p = strappenda(UNIT(s)->cgroup_path, "/control");
cg_kill_recursive(SYSTEMD_CGROUP_CONTROLLER, p, SIGKILL, true, true, true, NULL);
}
static void service_enter_start(Service *s) {
ExecCommand *c;
pid_t pid;
int r;
assert(s);
assert(s->exec_command[SERVICE_EXEC_START]);
assert(!s->exec_command[SERVICE_EXEC_START]->command_next || s->type == SERVICE_ONESHOT);
service_unwatch_control_pid(s);
service_unwatch_main_pid(s);
/* We want to ensure that nobody leaks processes from
* START_PRE here, so let's go on a killing spree, People
* should not spawn long running processes from START_PRE. */
service_kill_control_processes(s);
if (s->type == SERVICE_FORKING) {
s->control_command_id = SERVICE_EXEC_START;
c = s->control_command = s->exec_command[SERVICE_EXEC_START];
s->main_command = NULL;
} else {
s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
s->control_command = NULL;
c = s->main_command = s->exec_command[SERVICE_EXEC_START];
}
r = service_spawn(s,
c,
s->type == SERVICE_FORKING || s->type == SERVICE_DBUS ||
s->type == SERVICE_NOTIFY || s->type == SERVICE_ONESHOT,
true,
true,
true,
true,
s->notify_access != NOTIFY_NONE,
false,
&pid);
if (r < 0)
goto fail;
if (s->type == SERVICE_SIMPLE || s->type == SERVICE_IDLE) {
/* For simple services we immediately start
* the START_POST binaries. */
service_set_main_pid(s, pid);
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;
service_set_state(s, SERVICE_START);
} else if (s->type == SERVICE_ONESHOT ||
s->type == SERVICE_DBUS ||
s->type == SERVICE_NOTIFY) {
/* For oneshot services we wait until the start
* process exited, too, but it is our main process. */
/* For D-Bus services we know the main pid right away,
* but wait for the bus name to appear on the
* bus. Notify services are similar. */
service_set_main_pid(s, pid);
service_set_state(s, SERVICE_START);
} else
assert_not_reached("Unknown service type");
return;
fail:
log_warning_unit(UNIT(s)->id,
"%s failed to run 'start' task: %s", UNIT(s)->id, strerror(-r));
service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
}
static void service_enter_start_pre(Service *s) {
int r;
assert(s);
service_unwatch_control_pid(s);
s->control_command = s->exec_command[SERVICE_EXEC_START_PRE];
if (s->control_command) {
/* Before we start anything, let's clear up what might
* be left from previous runs. */
service_kill_control_processes(s);
s->control_command_id = SERVICE_EXEC_START_PRE;
r = service_spawn(s,
s->control_command,
true,
false,
!s->permissions_start_only,
!s->root_directory_start_only,
true,
false,
true,
&s->control_pid);
if (r < 0)
goto fail;
service_set_state(s, SERVICE_START_PRE);
} else
service_enter_start(s);
return;
fail:
log_warning_unit(UNIT(s)->id,
"%s failed to run 'start-pre' task: %s", UNIT(s)->id, strerror(-r));
service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
}
static void service_enter_restart(Service *s) {
int r;
DBusError error;
assert(s);
dbus_error_init(&error);
if (UNIT(s)->job && UNIT(s)->job->type == JOB_STOP) {
/* Don't restart things if we are going down anyway */
log_info_unit(UNIT(s)->id,
"Stop job pending for unit, delaying automatic restart.");
r = unit_watch_timer(UNIT(s), CLOCK_MONOTONIC, true, s->restart_usec, &s->timer_watch);
if (r < 0)
goto fail;
return;
}
/* Any units that are bound to this service must also be
* restarted. We use JOB_RESTART (instead of the more obvious
* JOB_START) here so that those dependency jobs will be added
* as well. */
r = manager_add_job(UNIT(s)->manager, JOB_RESTART, UNIT(s), JOB_FAIL, false, &error, NULL);
if (r < 0)
goto fail;
/* Note that we stay in the SERVICE_AUTO_RESTART state here,
* it will be canceled as part of the service_stop() call that
* is executed as part of JOB_RESTART. */
log_debug_unit(UNIT(s)->id,
"%s scheduled restart job.", UNIT(s)->id);
return;
fail:
log_warning_unit(UNIT(s)->id,
"%s failed to schedule restart job: %s",
UNIT(s)->id, bus_error(&error, -r));
service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
dbus_error_free(&error);
}
static void service_enter_reload(Service *s) {
int r;
assert(s);
service_unwatch_control_pid(s);
s->control_command = s->exec_command[SERVICE_EXEC_RELOAD];
if (s->control_command) {
s->control_command_id = SERVICE_EXEC_RELOAD;
r = service_spawn(s,
s->control_command,
true,
false,
!s->permissions_start_only,
!s->root_directory_start_only,
false,
false,
true,
&s->control_pid);
if (r < 0)
goto fail;
service_set_state(s, SERVICE_RELOAD);
} else
service_enter_running(s, SERVICE_SUCCESS);
return;
fail:
log_warning_unit(UNIT(s)->id,
"%s failed to run 'reload' task: %s",
UNIT(s)->id, strerror(-r));
s->reload_result = SERVICE_FAILURE_RESOURCES;
service_enter_running(s, SERVICE_SUCCESS);
}
static void service_run_next_control(Service *s) {
int r;
assert(s);
assert(s->control_command);
assert(s->control_command->command_next);
assert(s->control_command_id != SERVICE_EXEC_START);
s->control_command = s->control_command->command_next;
service_unwatch_control_pid(s);
r = service_spawn(s,
s->control_command,
true,
false,
!s->permissions_start_only,
!s->root_directory_start_only,
s->control_command_id == SERVICE_EXEC_START_PRE ||
s->control_command_id == SERVICE_EXEC_STOP_POST,
false,
true,
&s->control_pid);
if (r < 0)
goto fail;
return;
fail:
log_warning_unit(UNIT(s)->id,
"%s failed to run next control task: %s",
UNIT(s)->id, strerror(-r));
if (s->state == SERVICE_START_PRE)
service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
else if (s->state == SERVICE_STOP)
service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
else if (s->state == SERVICE_STOP_POST)
service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
else if (s->state == SERVICE_RELOAD) {
s->reload_result = SERVICE_FAILURE_RESOURCES;
service_enter_running(s, SERVICE_SUCCESS);
} else
service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
}
static void service_run_next_main(Service *s) {
pid_t pid;
int r;
assert(s);
assert(s->main_command);
assert(s->main_command->command_next);
assert(s->type == SERVICE_ONESHOT);
s->main_command = s->main_command->command_next;
service_unwatch_main_pid(s);
r = service_spawn(s,
s->main_command,
true,
true,
true,
true,
true,
s->notify_access != NOTIFY_NONE,
false,
&pid);
if (r < 0)
goto fail;
service_set_main_pid(s, pid);
return;
fail:
log_warning_unit(UNIT(s)->id,
"%s failed to run next main task: %s", UNIT(s)->id, strerror(-r));
service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
}
static int service_start_limit_test(Service *s) {
assert(s);
if (ratelimit_test(&s->start_limit))
return 0;
switch (s->start_limit_action) {
case SERVICE_START_LIMIT_NONE:
log_warning_unit(UNIT(s)->id,
"%s start request repeated too quickly, refusing to start.",
UNIT(s)->id);
break;
case SERVICE_START_LIMIT_REBOOT: {
DBusError error;
int r;
dbus_error_init(&error);
log_warning_unit(UNIT(s)->id,
"%s start request repeated too quickly, rebooting.", UNIT(s)->id);
r = manager_add_job_by_name(UNIT(s)->manager, JOB_START,
SPECIAL_REBOOT_TARGET, JOB_REPLACE,
true, &error, NULL);
if (r < 0) {
log_error_unit(UNIT(s)->id,
"Failed to reboot: %s.", bus_error(&error, r));
dbus_error_free(&error);
}
break;
}
case SERVICE_START_LIMIT_REBOOT_FORCE:
log_warning_unit(UNIT(s)->id,
"%s start request repeated too quickly, forcibly rebooting.", UNIT(s)->id);
UNIT(s)->manager->exit_code = MANAGER_REBOOT;
break;
case SERVICE_START_LIMIT_REBOOT_IMMEDIATE:
log_warning_unit(UNIT(s)->id,
"%s start request repeated too quickly, rebooting immediately.", UNIT(s)->id);
sync();
reboot(RB_AUTOBOOT);
break;
default:
log_error_unit(UNIT(s)->id,
"start limit action=%i", s->start_limit_action);
assert_not_reached("Unknown StartLimitAction.");
}
return -ECANCELED;
}
static int service_start(Unit *u) {
Service *s = SERVICE(u);
int r;
assert(s);
/* 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;
/* Already on it! */
if (s->state == SERVICE_START_PRE ||
s->state == SERVICE_START ||
s->state == SERVICE_START_POST)
return 0;
/* A service that will be restarted must be stopped first to
* trigger BindsTo and/or OnFailure dependencies. If a user
* does not want to wait for the holdoff time to elapse, the
* service should be manually restarted, not started. We
* simply return EAGAIN here, so that any start jobs stay
* queued, and assume that the auto restart timer will
* eventually trigger the restart. */
if (s->state == SERVICE_AUTO_RESTART)
return -EAGAIN;
assert(s->state == SERVICE_DEAD || s->state == SERVICE_FAILED);
/* Make sure we don't enter a busy loop of some kind. */
r = service_start_limit_test(s);
if (r < 0) {
service_enter_dead(s, SERVICE_FAILURE_START_LIMIT, false);
return r;
}
s->result = SERVICE_SUCCESS;
s->reload_result = SERVICE_SUCCESS;
s->main_pid_known = false;
s->main_pid_alien = false;
s->forbid_restart = false;
service_enter_start_pre(s);
return 0;
}
static int service_stop(Unit *u) {
Service *s = SERVICE(u);
assert(s);
/* Don't create restart jobs from here. */
s->forbid_restart = true;
/* Already on it */
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 0;
/* A restart will be scheduled or is in progress. */
if (s->state == SERVICE_AUTO_RESTART) {
service_set_state(s, SERVICE_DEAD);
return 0;
}
/* If there's already something running we go directly into
* kill mode. */
if (s->state == SERVICE_START_PRE ||
s->state == SERVICE_START ||
s->state == SERVICE_START_POST ||
s->state == SERVICE_RELOAD) {
service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_SUCCESS);
return 0;
}
assert(s->state == SERVICE_RUNNING ||
s->state == SERVICE_EXITED);
service_enter_stop(s, SERVICE_SUCCESS);
return 0;
}
static int service_reload(Unit *u) {
Service *s = SERVICE(u);
assert(s);
assert(s->state == SERVICE_RUNNING || s->state == SERVICE_EXITED);
service_enter_reload(s);
return 0;
}
_pure_ static bool service_can_reload(Unit *u) {
Service *s = SERVICE(u);
assert(s);
return !!s->exec_command[SERVICE_EXEC_RELOAD];
}
static int service_serialize(Unit *u, FILE *f, FDSet *fds) {
Service *s = SERVICE(u);
assert(u);
assert(f);
assert(fds);
unit_serialize_item(u, f, "state", service_state_to_string(s->state));
unit_serialize_item(u, f, "result", service_result_to_string(s->result));
unit_serialize_item(u, f, "reload-result", service_result_to_string(s->reload_result));
if (s->control_pid > 0)
unit_serialize_item_format(u, f, "control-pid", "%lu",
(unsigned long) s->control_pid);
if (s->main_pid_known && s->main_pid > 0)
unit_serialize_item_format(u, f, "main-pid", "%lu", (unsigned long) s->main_pid);
unit_serialize_item(u, f, "main-pid-known", yes_no(s->main_pid_known));
if (s->status_text)
unit_serialize_item(u, f, "status-text", s->status_text);
/* FIXME: There's a minor uncleanliness here: if there are
* multiple commands attached here, we will start from the
* first one again */
if (s->control_command_id >= 0)
unit_serialize_item(u, f, "control-command",
service_exec_command_to_string(s->control_command_id));
if (s->socket_fd >= 0) {
int copy;
if ((copy = fdset_put_dup(fds, s->socket_fd)) < 0)
return copy;
unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
}
if (s->main_exec_status.pid > 0) {
unit_serialize_item_format(u, f, "main-exec-status-pid", "%lu",
(unsigned long) s->main_exec_status.pid);
dual_timestamp_serialize(f, "main-exec-status-start",
&s->main_exec_status.start_timestamp);
dual_timestamp_serialize(f, "main-exec-status-exit",
&s->main_exec_status.exit_timestamp);
if (dual_timestamp_is_set(&s->main_exec_status.exit_timestamp)) {
unit_serialize_item_format(u, f, "main-exec-status-code", "%i",
s->main_exec_status.code);
unit_serialize_item_format(u, f, "main-exec-status-status", "%i",
s->main_exec_status.status);
}
}
if (dual_timestamp_is_set(&s->watchdog_timestamp))
dual_timestamp_serialize(f, "watchdog-timestamp",
&s->watchdog_timestamp);
if (s->exec_context.tmp_dir)
unit_serialize_item(u, f, "tmp-dir", s->exec_context.tmp_dir);
if (s->exec_context.var_tmp_dir)
unit_serialize_item(u, f, "var-tmp-dir", s->exec_context.var_tmp_dir);
return 0;
}
static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
Service *s = SERVICE(u);
assert(u);
assert(key);
assert(value);
assert(fds);
if (streq(key, "state")) {
ServiceState state;
state = service_state_from_string(value);
if (state < 0)
log_debug_unit(u->id, "Failed to parse state value %s", value);
else
s->deserialized_state = state;
} else if (streq(key, "result")) {
ServiceResult f;
f = service_result_from_string(value);
if (f < 0)
log_debug_unit(u->id, "Failed to parse result value %s", value);
else if (f != SERVICE_SUCCESS)
s->result = f;
} else if (streq(key, "reload-result")) {
ServiceResult f;
f = service_result_from_string(value);
if (f < 0)
log_debug_unit(u->id, "Failed to parse reload result value %s", value);
else if (f != SERVICE_SUCCESS)
s->reload_result = f;
} else if (streq(key, "control-pid")) {
pid_t pid;
if (parse_pid(value, &pid) < 0)
log_debug_unit(u->id, "Failed to parse control-pid value %s", value);
else
s->control_pid = pid;
} else if (streq(key, "main-pid")) {
pid_t pid;
if (parse_pid(value, &pid) < 0)
log_debug_unit(u->id, "Failed to parse main-pid value %s", value);
else
service_set_main_pid(s, (pid_t) pid);
} else if (streq(key, "main-pid-known")) {
int b;
b = parse_boolean(value);
if (b < 0)
log_debug_unit(u->id, "Failed to parse main-pid-known value %s", value);
else
s->main_pid_known = b;
} else if (streq(key, "status-text")) {
char *t;
t = strdup(value);
if (!t)
log_oom();
else {
free(s->status_text);
s->status_text = t;
}
} else if (streq(key, "control-command")) {
ServiceExecCommand id;
id = service_exec_command_from_string(value);
if (id < 0)
log_debug_unit(u->id, "Failed to parse exec-command value %s", value);
else {
s->control_command_id = id;
s->control_command = s->exec_command[id];
}
} else if (streq(key, "socket-fd")) {
int fd;
if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
log_debug_unit(u->id, "Failed to parse socket-fd value %s", value);
else {
if (s->socket_fd >= 0)
close_nointr_nofail(s->socket_fd);
s->socket_fd = fdset_remove(fds, fd);
}
} else if (streq(key, "main-exec-status-pid")) {
pid_t pid;
if (parse_pid(value, &pid) < 0)
log_debug_unit(u->id, "Failed to parse main-exec-status-pid value %s", value);
else
s->main_exec_status.pid = pid;
} else if (streq(key, "main-exec-status-code")) {
int i;
if (safe_atoi(value, &i) < 0)
log_debug_unit(u->id, "Failed to parse main-exec-status-code value %s", value);
else
s->main_exec_status.code = i;
} else if (streq(key, "main-exec-status-status")) {
int i;
if (safe_atoi(value, &i) < 0)
log_debug_unit(u->id, "Failed to parse main-exec-status-status value %s", value);
else
s->main_exec_status.status = i;
} else if (streq(key, "main-exec-status-start"))
dual_timestamp_deserialize(value, &s->main_exec_status.start_timestamp);
else if (streq(key, "main-exec-status-exit"))
dual_timestamp_deserialize(value, &s->main_exec_status.exit_timestamp);
else if (streq(key, "watchdog-timestamp"))
dual_timestamp_deserialize(value, &s->watchdog_timestamp);
else if (streq(key, "tmp-dir")) {
char *t;
t = strdup(value);
if (!t)
return log_oom();
s->exec_context.tmp_dir = t;
} else if (streq(key, "var-tmp-dir")) {
char *t;
t = strdup(value);
if (!t)
return log_oom();
s->exec_context.var_tmp_dir = t;
} else
log_debug_unit(u->id, "Unknown serialization key '%s'", key);
return 0;
}
_pure_ static UnitActiveState service_active_state(Unit *u) {
const UnitActiveState *table;
assert(u);
table = SERVICE(u)->type == SERVICE_IDLE ? state_translation_table_idle : state_translation_table;
return table[SERVICE(u)->state];
}
static const char *service_sub_state_to_string(Unit *u) {
assert(u);
return service_state_to_string(SERVICE(u)->state);
}
static bool service_check_gc(Unit *u) {
Service *s = SERVICE(u);
assert(s);
/* Never clean up services that still have a process around,
* even if the service is formally dead. */
if (cgroup_good(s) > 0 ||
main_pid_good(s) > 0 ||
control_pid_good(s) > 0)
return true;
#ifdef HAVE_SYSV_COMPAT
if (s->is_sysv)
return true;
#endif
return false;
}
_pure_ static bool service_check_snapshot(Unit *u) {
Service *s = SERVICE(u);
assert(s);
return !s->got_socket_fd;
}
static int service_retry_pid_file(Service *s) {
int r;
assert(s->pid_file);
assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
r = service_load_pid_file(s, false);
if (r < 0)
return r;
service_unwatch_pid_file(s);
service_enter_running(s, SERVICE_SUCCESS);
return 0;
}
static int service_watch_pid_file(Service *s) {
int r;
log_debug_unit(UNIT(s)->id,
"Setting watch for %s's PID file %s",
UNIT(s)->id, s->pid_file_pathspec->path);
r = path_spec_watch(s->pid_file_pathspec, UNIT(s));
if (r < 0)
goto fail;
/* the pidfile might have appeared just before we set the watch */
log_debug_unit(UNIT(s)->id,
"Trying to read %s's PID file %s in case it changed",
UNIT(s)->id, s->pid_file_pathspec->path);
service_retry_pid_file(s);
return 0;
fail:
log_error_unit(UNIT(s)->id,
"Failed to set a watch for %s's PID file %s: %s",
UNIT(s)->id, s->pid_file_pathspec->path, strerror(-r));
service_unwatch_pid_file(s);
return r;
}
static int service_demand_pid_file(Service *s) {
PathSpec *ps;
assert(s->pid_file);
assert(!s->pid_file_pathspec);
ps = new0(PathSpec, 1);
if (!ps)
return -ENOMEM;
ps->path = strdup(s->pid_file);
if (!ps->path) {
free(ps);
return -ENOMEM;
}
path_kill_slashes(ps->path);
/* PATH_CHANGED would not be enough. There are daemons (sendmail) that
* keep their PID file open all the time. */
ps->type = PATH_MODIFIED;
ps->inotify_fd = -1;
s->pid_file_pathspec = ps;
return service_watch_pid_file(s);
}
static void service_fd_event(Unit *u, int fd, uint32_t events, Watch *w) {
Service *s = SERVICE(u);
assert(s);
assert(fd >= 0);
assert(s->state == SERVICE_START || s->state == SERVICE_START_POST);
assert(s->pid_file_pathspec);
assert(path_spec_owns_inotify_fd(s->pid_file_pathspec, fd));
log_debug_unit(u->id, "inotify event for %s", u->id);
if (path_spec_fd_event(s->pid_file_pathspec, events) < 0)
goto fail;
if (service_retry_pid_file(s) == 0)
return;
if (service_watch_pid_file(s) < 0)
goto fail;
return;
fail:
service_unwatch_pid_file(s);
service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
}
static void service_sigchld_event(Unit *u, pid_t pid, int code, int status) {
Service *s = SERVICE(u);
ServiceResult f;
assert(s);
assert(pid >= 0);
if (UNIT(s)->fragment_path ? is_clean_exit(code, status, &s->success_status) :
is_clean_exit_lsb(code, status, &s->success_status))
f = SERVICE_SUCCESS;
else if (code == CLD_EXITED)
f = SERVICE_FAILURE_EXIT_CODE;
else if (code == CLD_KILLED)
f = SERVICE_FAILURE_SIGNAL;
else if (code == CLD_DUMPED)
f = SERVICE_FAILURE_CORE_DUMP;
else
assert_not_reached("Unknown code");
if (s->main_pid == pid) {
/* Forking services may occasionally move to a new PID.
* As long as they update the PID file before exiting the old
* PID, they're fine. */
if (service_load_pid_file(s, false) == 0)
return;
s->main_pid = 0;
exec_status_exit(&s->main_exec_status, &s->exec_context, pid, code, status);
if (s->main_command) {
/* If this is not a forking service than the
* main process got started and hence we copy
* the exit status so that it is recorded both
* as main and as control process exit
* status */
s->main_command->exec_status = s->main_exec_status;
if (s->main_command->ignore)
f = SERVICE_SUCCESS;
} else if (s->exec_command[SERVICE_EXEC_START]) {
/* If this is a forked process, then we should
* ignore the return value if this was
* configured for the starter process */
if (s->exec_command[SERVICE_EXEC_START]->ignore)
f = SERVICE_SUCCESS;
}
log_struct_unit(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE,
u->id,
"MESSAGE=%s: main process exited, code=%s, status=%i/%s",
u->id, sigchld_code_to_string(code), status,
strna(code == CLD_EXITED
? exit_status_to_string(status, EXIT_STATUS_FULL)
: signal_to_string(status)),
"EXIT_CODE=%s", sigchld_code_to_string(code),
"EXIT_STATUS=%i", status,
NULL);
if (f != SERVICE_SUCCESS)
s->result = f;
if (s->main_command &&
s->main_command->command_next &&
f == SERVICE_SUCCESS) {
/* There is another command to *
* execute, so let's do that. */
log_debug_unit(u->id,
"%s running next main command for state %s",
u->id, service_state_to_string(s->state));
service_run_next_main(s);
} else {
/* The service exited, so the service is officially
* gone. */
s->main_command = NULL;
switch (s->state) {
case SERVICE_START_POST:
case SERVICE_RELOAD:
case SERVICE_STOP:
/* Need to wait until the operation is
* done */
break;
case SERVICE_START:
if (s->type == SERVICE_ONESHOT) {
/* This was our main goal, so let's go on */
if (f == SERVICE_SUCCESS)
service_enter_start_post(s);
else
service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
break;
}
/* Fall through */
case SERVICE_RUNNING:
service_enter_running(s, f);
break;
case SERVICE_STOP_SIGTERM:
case SERVICE_STOP_SIGKILL:
if (!control_pid_good(s))
service_enter_stop_post(s, f);
/* 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) {
s->control_pid = 0;
if (s->control_command) {
exec_status_exit(&s->control_command->exec_status,
&s->exec_context, pid, code, status);
if (s->control_command->ignore)
f = SERVICE_SUCCESS;
}
log_full_unit(f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE, u->id,
"%s: control process exited, code=%s status=%i",
u->id, sigchld_code_to_string(code), status);
if (f != SERVICE_SUCCESS)
s->result = f;
/* Immediately get rid of the cgroup, so that the
* kernel doesn't delay the cgroup empty messages for
* the service cgroup any longer than necessary */
service_kill_control_processes(s);
if (s->control_command &&
s->control_command->command_next &&
f == SERVICE_SUCCESS) {
/* There is another command to *
* execute, so let's do that. */
log_debug_unit(u->id,
"%s running next control command for state %s",
u->id, service_state_to_string(s->state));
service_run_next_control(s);
} else {
/* No further commands for this step, so let's
* figure out what to do next */
s->control_command = NULL;
s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
log_debug_unit(u->id,
"%s got final SIGCHLD for state %s",
u->id, service_state_to_string(s->state));
switch (s->state) {
case SERVICE_START_PRE:
if (f == SERVICE_SUCCESS)
service_enter_start(s);
else
service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
break;
case SERVICE_START:
if (s->type != SERVICE_FORKING)
/* Maybe spurious event due to a reload that changed the type? */
break;
if (f != SERVICE_SUCCESS) {
service_enter_signal(s, SERVICE_FINAL_SIGTERM, f);
break;
}
if (s->pid_file) {
bool has_start_post;
int r;
/* Let's try to load the pid file here if we can.
* The PID file might actually be created by a START_POST
* script. In that case don't worry if the loading fails. */
has_start_post = !!s->exec_command[SERVICE_EXEC_START_POST];
r = service_load_pid_file(s, !has_start_post);
if (!has_start_post && r < 0) {
r = service_demand_pid_file(s);
if (r < 0 || !cgroup_good(s))
service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
break;
}
} else
service_search_main_pid(s);
service_enter_start_post(s);
break;
case SERVICE_START_POST:
if (f != SERVICE_SUCCESS) {
service_enter_stop(s, f);
break;
}
if (s->pid_file) {
int r;
r = service_load_pid_file(s, true);
if (r < 0) {
r = service_demand_pid_file(s);
if (r < 0 || !cgroup_good(s))
service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
break;
}
} else
service_search_main_pid(s);
service_enter_running(s, SERVICE_SUCCESS);
break;
case SERVICE_RELOAD:
if (f == SERVICE_SUCCESS) {
service_load_pid_file(s, true);
service_search_main_pid(s);
}
s->reload_result = f;
service_enter_running(s, SERVICE_SUCCESS);
break;
case SERVICE_STOP:
service_enter_signal(s, SERVICE_STOP_SIGTERM, f);
break;
case SERVICE_STOP_SIGTERM:
case SERVICE_STOP_SIGKILL:
if (main_pid_good(s) <= 0)
service_enter_stop_post(s, f);
/* 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, f, true);
break;
default:
assert_not_reached("Uh, control process died at wrong time.");
}
}
}
/* Notify clients about changed exit status */
unit_add_to_dbus_queue(u);
}
static void service_timer_event(Unit *u, uint64_t elapsed, Watch* w) {
Service *s = SERVICE(u);
assert(s);
assert(elapsed == 1);
if (w == &s->watchdog_watch) {
service_handle_watchdog(s);
return;
}
assert(w == &s->timer_watch);
switch (s->state) {
case SERVICE_START_PRE:
case SERVICE_START:
log_warning_unit(u->id,
"%s operation timed out. Terminating.", u->id);
service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
break;
case SERVICE_START_POST:
log_warning_unit(u->id,
"%s operation timed out. Stopping.", u->id);
service_enter_stop(s, SERVICE_FAILURE_TIMEOUT);
break;
case SERVICE_RELOAD:
log_warning_unit(u->id,
"%s operation timed out. Stopping.", u->id);
s->reload_result = SERVICE_FAILURE_TIMEOUT;
service_enter_running(s, SERVICE_SUCCESS);
break;
case SERVICE_STOP:
log_warning_unit(u->id,
"%s stopping timed out. Terminating.", u->id);
service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT);
break;
case SERVICE_STOP_SIGTERM:
if (s->kill_context.send_sigkill) {
log_warning_unit(u->id,
"%s stopping timed out. Killing.", u->id);
service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT);
} else {
log_warning_unit(u->id,
"%s stopping timed out. Skipping SIGKILL.", u->id);
service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
}
break;
case SERVICE_STOP_SIGKILL:
/* Uh, we 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_unit(u->id,
"%s still around after SIGKILL. Ignoring.", u->id);
service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
break;
case SERVICE_STOP_POST:
log_warning_unit(u->id,
"%s stopping timed out (2). Terminating.", u->id);
service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
break;
case SERVICE_FINAL_SIGTERM:
if (s->kill_context.send_sigkill) {
log_warning_unit(u->id,
"%s stopping timed out (2). Killing.", u->id);
service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT);
} else {
log_warning_unit(u->id,
"%s stopping timed out (2). Skipping SIGKILL. Entering failed mode.",
u->id);
service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false);
}
break;
case SERVICE_FINAL_SIGKILL:
log_warning_unit(u->id,
"%s still around after SIGKILL (2). Entering failed mode.", u->id);
service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true);
break;
case SERVICE_AUTO_RESTART:
log_info_unit(u->id,
"%s holdoff time over, scheduling restart.", u->id);
service_enter_restart(s);
break;
default:
assert_not_reached("Timeout at wrong time.");
}
}
static void service_notify_cgroup_empty_event(Unit *u) {
Service *s = SERVICE(u);
assert(u);
log_debug_unit(u->id, "%s: cgroup is empty", u->id);
switch (s->state) {
/* Waiting for SIGCHLD is usually more interesting,
* because it includes return codes/signals. Which is
* why we ignore the cgroup events for most cases,
* except when we don't know pid which to expect the
* SIGCHLD for. */
case SERVICE_START:
case SERVICE_START_POST:
/* If we were hoping for the daemon to write its PID file,
* we can give up now. */
if (s->pid_file_pathspec) {
log_warning_unit(u->id,
"%s never wrote its PID file. Failing.", UNIT(s)->id);
service_unwatch_pid_file(s);
if (s->state == SERVICE_START)
service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_RESOURCES);
else
service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
}
break;
case SERVICE_RUNNING:
/* service_enter_running() will figure out what to do */
service_enter_running(s, SERVICE_SUCCESS);
break;
case SERVICE_STOP_SIGTERM:
case SERVICE_STOP_SIGKILL:
if (main_pid_good(s) <= 0 && !control_pid_good(s))
service_enter_stop_post(s, SERVICE_SUCCESS);
break;
case SERVICE_FINAL_SIGTERM:
case SERVICE_FINAL_SIGKILL:
if (main_pid_good(s) <= 0 && !control_pid_good(s))
service_enter_dead(s, SERVICE_SUCCESS, true);
break;
default:
;
}
}
static void service_notify_message(Unit *u, pid_t pid, char **tags) {
Service *s = SERVICE(u);
const char *e;
assert(u);
if (s->notify_access == NOTIFY_NONE) {
log_warning_unit(u->id,
"%s: Got notification message from PID %lu, but reception is disabled.",
u->id, (unsigned long) pid);
return;
}
if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
log_warning_unit(u->id,
"%s: Got notification message from PID %lu, but reception only permitted for PID %lu",
u->id, (unsigned long) pid, (unsigned long) s->main_pid);
return;
}
log_debug_unit(u->id,
"%s: Got message", u->id);
/* Interpret MAINPID= */
if ((e = strv_find_prefix(tags, "MAINPID=")) &&
(s->state == SERVICE_START ||
s->state == SERVICE_START_POST ||
s->state == SERVICE_RUNNING ||
s->state == SERVICE_RELOAD)) {
if (parse_pid(e + 8, &pid) < 0)
log_warning_unit(u->id,
"Failed to parse notification message %s", e);
else {
log_debug_unit(u->id,
"%s: got %s", u->id, e);
service_set_main_pid(s, pid);
}
}
/* Interpret READY= */
if (s->type == SERVICE_NOTIFY &&
s->state == SERVICE_START &&
strv_find(tags, "READY=1")) {
log_debug_unit(u->id,
"%s: got READY=1", u->id);
service_enter_start_post(s);
}
/* Interpret STATUS= */
e = strv_find_prefix(tags, "STATUS=");
if (e) {
char *t;
if (e[7]) {
if (!utf8_is_valid(e+7)) {
log_warning_unit(u->id,
"Status message in notification is not UTF-8 clean.");
return;
}
t = strdup(e+7);
if (!t) {
log_error_unit(u->id,
"Failed to allocate string.");
return;
}
log_debug_unit(u->id,
"%s: got %s", u->id, e);
free(s->status_text);
s->status_text = t;
} else {
free(s->status_text);
s->status_text = NULL;
}
}
if (strv_find(tags, "WATCHDOG=1")) {
log_debug_unit(u->id,
"%s: got WATCHDOG=1", u->id);
if (dual_timestamp_is_set(&s->watchdog_timestamp))
service_reset_watchdog(s);
}
/* Notify clients about changed status or main pid */
unit_add_to_dbus_queue(u);
}
#ifdef HAVE_SYSV_COMPAT
static int service_enumerate(Manager *m) {
char **p;
unsigned i;
_cleanup_closedir_ DIR *d = NULL;
_cleanup_free_ char *path = NULL, *fpath = NULL, *name = NULL;
Set *runlevel_services[ELEMENTSOF(rcnd_table)] = {};
_cleanup_set_free_ Set *shutdown_services = NULL;
Unit *service;
Iterator j;
int r;
assert(m);
if (m->running_as != SYSTEMD_SYSTEM)
return 0;
STRV_FOREACH(p, m->lookup_paths.sysvrcnd_path)
for (i = 0; i < ELEMENTSOF(rcnd_table); i ++) {
struct dirent *de;
free(path);
path = strjoin(*p, "/", rcnd_table[i].path, NULL);
if (!path) {
r = -ENOMEM;
goto finish;
}
if (d)
closedir(d);
d = opendir(path);
if (!d) {
if (errno != ENOENT)
log_warning("opendir(%s) failed: %s", path, strerror(errno));
continue;
}
while ((de = readdir(d))) {
int a, b;
if (ignore_file(de->d_name))
continue;
if (de->d_name[0] != 'S' && de->d_name[0] != 'K')
continue;
if (strlen(de->d_name) < 4)
continue;
a = undecchar(de->d_name[1]);
b = undecchar(de->d_name[2]);
if (a < 0 || b < 0)
continue;
free(fpath);
fpath = strjoin(path, "/", de->d_name, NULL);
if (!fpath) {
r = -ENOMEM;
goto finish;
}
if (access(fpath, X_OK) < 0) {
if (errno != ENOENT)
log_warning("access() failed on %s: %s", fpath, strerror(errno));
continue;
}
free(name);
name = sysv_translate_name(de->d_name + 3);
if (!name) {
r = log_oom();
goto finish;
}
r = manager_load_unit_prepare(m, name, NULL, NULL, &service);
if (r < 0) {
log_warning("Failed to prepare unit %s: %s", name, strerror(-r));
continue;
}
if (de->d_name[0] == 'S') {
if (rcnd_table[i].type == RUNLEVEL_UP) {
SERVICE(service)->sysv_start_priority_from_rcnd =
MAX(a*10 + b, SERVICE(service)->sysv_start_priority_from_rcnd);
SERVICE(service)->sysv_enabled = true;
}
r = set_ensure_allocated(&runlevel_services[i],
trivial_hash_func, trivial_compare_func);
if (r < 0)
goto finish;
r = set_put(runlevel_services[i], service);
if (r < 0)
goto finish;
} else if (de->d_name[0] == 'K' &&
(rcnd_table[i].type == RUNLEVEL_DOWN)) {
r = set_ensure_allocated(&shutdown_services,
trivial_hash_func, trivial_compare_func);
if (r < 0)
goto finish;
r = set_put(shutdown_services, service);
if (r < 0)
goto finish;
}
}
}
/* Now we loaded all stubs and are aware of the lowest
start-up priority for all services, not let's actually load
the services, this will also tell us which services are
actually native now */
manager_dispatch_load_queue(m);
/* If this is a native service, rely on native ways to pull in
* a service, don't pull it in via sysv rcN.d links. */
for (i = 0; i < ELEMENTSOF(rcnd_table); i ++)
SET_FOREACH(service, runlevel_services[i], j) {
service = unit_follow_merge(service);
if (service->fragment_path)
continue;
r = unit_add_two_dependencies_by_name_inverse(
service, UNIT_AFTER, UNIT_WANTS,
rcnd_table[i].target, NULL, true);
if (r < 0)
goto finish;
}
/* We honour K links only for halt/reboot. For the normal
* runlevels we assume the stop jobs will be implicitly added
* by the core logic. Also, we don't really distinguish here
* between the runlevels 0 and 6 and just add them to the
* special shutdown target. */
SET_FOREACH(service, shutdown_services, j) {
service = unit_follow_merge(service);
if (service->fragment_path)
continue;
r = unit_add_two_dependencies_by_name(
service, UNIT_BEFORE, UNIT_CONFLICTS,
SPECIAL_SHUTDOWN_TARGET, NULL, true);
if (r < 0)
goto finish;
}
r = 0;
finish:
for (i = 0; i < ELEMENTSOF(rcnd_table); i++)
set_free(runlevel_services[i]);
return r;
}
#endif
static void service_bus_name_owner_change(
Unit *u,
const char *name,
const char *old_owner,
const char *new_owner) {
Service *s = SERVICE(u);
assert(s);
assert(name);
assert(streq(s->bus_name, name));
assert(old_owner || new_owner);
if (old_owner && new_owner)
log_debug_unit(u->id,
"%s's D-Bus name %s changed owner from %s to %s",
u->id, name, old_owner, new_owner);
else if (old_owner)
log_debug_unit(u->id,
"%s's D-Bus name %s no longer registered by %s",
u->id, name, old_owner);
else
log_debug_unit(u->id,
"%s's D-Bus name %s now registered by %s",
u->id, name, new_owner);
s->bus_name_good = !!new_owner;
if (s->type == SERVICE_DBUS) {
/* service_enter_running() will figure out what to
* do */
if (s->state == SERVICE_RUNNING)
service_enter_running(s, SERVICE_SUCCESS);
else if (s->state == SERVICE_START && new_owner)
service_enter_start_post(s);
} else if (new_owner &&
s->main_pid <= 0 &&
(s->state == SERVICE_START ||
s->state == SERVICE_START_POST ||
s->state == SERVICE_RUNNING ||
s->state == SERVICE_RELOAD)) {
/* Try to acquire PID from bus service */
log_debug_unit(u->id,
"Trying to acquire PID from D-Bus name...");
bus_query_pid(u->manager, name);
}
}
static void service_bus_query_pid_done(
Unit *u,
const char *name,
pid_t pid) {
Service *s = SERVICE(u);
assert(s);
assert(name);
log_debug_unit(u->id,
"%s's D-Bus name %s is now owned by process %u",
u->id, name, (unsigned) pid);
if (s->main_pid <= 0 &&
(s->state == SERVICE_START ||
s->state == SERVICE_START_POST ||
s->state == SERVICE_RUNNING ||
s->state == SERVICE_RELOAD))
service_set_main_pid(s, pid);
}
int service_set_socket_fd(Service *s, int fd, Socket *sock) {
assert(s);
assert(fd >= 0);
/* This is called by the socket code when instantiating a new
* service for a stream socket and the socket needs to be
* configured. */
if (UNIT(s)->load_state != UNIT_LOADED)
return -EINVAL;
if (s->socket_fd >= 0)
return -EBUSY;
if (s->state != SERVICE_DEAD)
return -EAGAIN;
s->socket_fd = fd;
s->got_socket_fd = true;
unit_ref_set(&s->accept_socket, UNIT(sock));
return unit_add_two_dependencies(UNIT(sock), UNIT_BEFORE, UNIT_TRIGGERS, UNIT(s), false);
}
static void service_reset_failed(Unit *u) {
Service *s = SERVICE(u);
assert(s);
if (s->state == SERVICE_FAILED)
service_set_state(s, SERVICE_DEAD);
s->result = SERVICE_SUCCESS;
s->reload_result = SERVICE_SUCCESS;
RATELIMIT_RESET(s->start_limit);
}
static int service_kill(Unit *u, KillWho who, int signo, DBusError *error) {
Service *s = SERVICE(u);
return unit_kill_common(u, who, signo, s->main_pid, s->control_pid, error);
}
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_EXITED] = "exited",
[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_FAILED] = "failed",
[SERVICE_AUTO_RESTART] = "auto-restart",
};
DEFINE_STRING_TABLE_LOOKUP(service_state, ServiceState);
static const char* const service_restart_table[_SERVICE_RESTART_MAX] = {
[SERVICE_RESTART_NO] = "no",
[SERVICE_RESTART_ON_SUCCESS] = "on-success",
[SERVICE_RESTART_ON_FAILURE] = "on-failure",
[SERVICE_RESTART_ON_WATCHDOG] = "on-watchdog",
[SERVICE_RESTART_ON_ABORT] = "on-abort",
[SERVICE_RESTART_ALWAYS] = "always"
};
DEFINE_STRING_TABLE_LOOKUP(service_restart, ServiceRestart);
static const char* const service_type_table[_SERVICE_TYPE_MAX] = {
[SERVICE_SIMPLE] = "simple",
[SERVICE_FORKING] = "forking",
[SERVICE_ONESHOT] = "oneshot",
[SERVICE_DBUS] = "dbus",
[SERVICE_NOTIFY] = "notify",
[SERVICE_IDLE] = "idle"
};
DEFINE_STRING_TABLE_LOOKUP(service_type, ServiceType);
static const char* const service_exec_command_table[_SERVICE_EXEC_COMMAND_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);
static const char* const notify_access_table[_NOTIFY_ACCESS_MAX] = {
[NOTIFY_NONE] = "none",
[NOTIFY_MAIN] = "main",
[NOTIFY_ALL] = "all"
};
DEFINE_STRING_TABLE_LOOKUP(notify_access, NotifyAccess);
static const char* const service_result_table[_SERVICE_RESULT_MAX] = {
[SERVICE_SUCCESS] = "success",
[SERVICE_FAILURE_RESOURCES] = "resources",
[SERVICE_FAILURE_TIMEOUT] = "timeout",
[SERVICE_FAILURE_EXIT_CODE] = "exit-code",
[SERVICE_FAILURE_SIGNAL] = "signal",
[SERVICE_FAILURE_CORE_DUMP] = "core-dump",
[SERVICE_FAILURE_WATCHDOG] = "watchdog",
[SERVICE_FAILURE_START_LIMIT] = "start-limit"
};
DEFINE_STRING_TABLE_LOOKUP(service_result, ServiceResult);
static const char* const start_limit_action_table[_SERVICE_START_LIMIT_MAX] = {
[SERVICE_START_LIMIT_NONE] = "none",
[SERVICE_START_LIMIT_REBOOT] = "reboot",
[SERVICE_START_LIMIT_REBOOT_FORCE] = "reboot-force",
[SERVICE_START_LIMIT_REBOOT_IMMEDIATE] = "reboot-immediate"
};
DEFINE_STRING_TABLE_LOOKUP(start_limit_action, StartLimitAction);
const UnitVTable service_vtable = {
.object_size = sizeof(Service),
.sections =
"Unit\0"
"Service\0"
"Install\0",
.private_section = "Service",
.exec_context_offset = offsetof(Service, exec_context),
.cgroup_context_offset = offsetof(Service, cgroup_context),
.init = service_init,
.done = service_done,
.load = service_load,
.coldplug = service_coldplug,
.dump = service_dump,
.start = service_start,
.stop = service_stop,
.reload = service_reload,
.can_reload = service_can_reload,
.kill = service_kill,
.serialize = service_serialize,
.deserialize_item = service_deserialize_item,
.active_state = service_active_state,
.sub_state_to_string = service_sub_state_to_string,
.check_gc = service_check_gc,
.check_snapshot = service_check_snapshot,
.sigchld_event = service_sigchld_event,
.timer_event = service_timer_event,
.fd_event = service_fd_event,
.reset_failed = service_reset_failed,
.notify_cgroup_empty = service_notify_cgroup_empty_event,
.notify_message = service_notify_message,
.bus_name_owner_change = service_bus_name_owner_change,
.bus_query_pid_done = service_bus_query_pid_done,
.bus_interface = "org.freedesktop.systemd1.Service",
.bus_message_handler = bus_service_message_handler,
.bus_invalidating_properties = bus_service_invalidating_properties,
.bus_set_property = bus_service_set_property,
.bus_commit_properties = bus_service_commit_properties,
.can_transient = true,
#ifdef HAVE_SYSV_COMPAT
.enumerate = service_enumerate,
#endif
.status_message_formats = {
.starting_stopping = {
[0] = "Starting %s...",
[1] = "Stopping %s...",
},
.finished_start_job = {
[JOB_DONE] = "Started %s.",
[JOB_FAILED] = "Failed to start %s.",
[JOB_DEPENDENCY] = "Dependency failed for %s.",
[JOB_TIMEOUT] = "Timed out starting %s.",
},
.finished_stop_job = {
[JOB_DONE] = "Stopped %s.",
[JOB_FAILED] = "Stopped (with error) %s.",
[JOB_TIMEOUT] = "Timed out stopping %s.",
},
},
};