+++ /dev/null
-/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
-
-/***
- This file is part of systemd.
-
- Copyright 2010 Lennart Poettering
-
- systemd is free software; you can redistribute it and/or modify it
- under the terms of the GNU Lesser General Public License as published by
- the Free Software Foundation; either version 2.1 of the License, or
- (at your option) any later version.
-
- systemd is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public License
- along with systemd; If not, see <http://www.gnu.org/licenses/>.
-***/
-
-#include <errno.h>
-#include <signal.h>
-#include <unistd.h>
-
-#include "async.h"
-#include "manager.h"
-#include "unit.h"
-#include "service.h"
-#include "load-fragment.h"
-#include "load-dropin.h"
-#include "log.h"
-#include "strv.h"
-#include "unit-name.h"
-#include "unit-printf.h"
-#include "dbus-service.h"
-#include "special.h"
-#include "exit-status.h"
-#include "def.h"
-#include "path-util.h"
-#include "util.h"
-#include "utf8.h"
-#include "env-util.h"
-#include "fileio.h"
-#include "bus-error.h"
-#include "bus-util.h"
-#include "bus-kernel.h"
-
-static const UnitActiveState state_translation_table[_SERVICE_STATE_MAX] = {
- [SERVICE_DEAD] = UNIT_INACTIVE,
- [SERVICE_START_PRE] = UNIT_ACTIVATING,
- [SERVICE_START] = UNIT_ACTIVATING,
- [SERVICE_START_POST] = UNIT_ACTIVATING,
- [SERVICE_RUNNING] = UNIT_ACTIVE,
- [SERVICE_EXITED] = UNIT_ACTIVE,
- [SERVICE_RELOAD] = UNIT_RELOADING,
- [SERVICE_STOP] = UNIT_DEACTIVATING,
- [SERVICE_STOP_SIGABRT] = UNIT_DEACTIVATING,
- [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
- [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
- [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
- [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
- [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
- [SERVICE_FAILED] = UNIT_FAILED,
- [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING
-};
-
-/* For Type=idle we never want to delay any other jobs, hence we
- * consider idle jobs active as soon as we start working on them */
-static const UnitActiveState state_translation_table_idle[_SERVICE_STATE_MAX] = {
- [SERVICE_DEAD] = UNIT_INACTIVE,
- [SERVICE_START_PRE] = UNIT_ACTIVE,
- [SERVICE_START] = UNIT_ACTIVE,
- [SERVICE_START_POST] = UNIT_ACTIVE,
- [SERVICE_RUNNING] = UNIT_ACTIVE,
- [SERVICE_EXITED] = UNIT_ACTIVE,
- [SERVICE_RELOAD] = UNIT_RELOADING,
- [SERVICE_STOP] = UNIT_DEACTIVATING,
- [SERVICE_STOP_SIGABRT] = UNIT_DEACTIVATING,
- [SERVICE_STOP_SIGTERM] = UNIT_DEACTIVATING,
- [SERVICE_STOP_SIGKILL] = UNIT_DEACTIVATING,
- [SERVICE_STOP_POST] = UNIT_DEACTIVATING,
- [SERVICE_FINAL_SIGTERM] = UNIT_DEACTIVATING,
- [SERVICE_FINAL_SIGKILL] = UNIT_DEACTIVATING,
- [SERVICE_FAILED] = UNIT_FAILED,
- [SERVICE_AUTO_RESTART] = UNIT_ACTIVATING
-};
-
-static int service_dispatch_io(sd_event_source *source, int fd, uint32_t events, void *userdata);
-static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata);
-static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata);
-
-static void service_enter_signal(Service *s, ServiceState state, ServiceResult f);
-static void service_enter_reload_by_notify(Service *s);
-
-static void service_init(Unit *u) {
- Service *s = SERVICE(u);
-
- assert(u);
- assert(u->load_state == UNIT_STUB);
-
- s->timeout_start_usec = u->manager->default_timeout_start_usec;
- s->timeout_stop_usec = u->manager->default_timeout_stop_usec;
- s->restart_usec = u->manager->default_restart_usec;
- s->type = _SERVICE_TYPE_INVALID;
- s->socket_fd = -1;
- s->bus_endpoint_fd = -1;
- s->guess_main_pid = true;
-
- RATELIMIT_INIT(s->start_limit, u->manager->default_start_limit_interval, u->manager->default_start_limit_burst);
-
- s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
-}
-
-static void service_unwatch_control_pid(Service *s) {
- assert(s);
-
- if (s->control_pid <= 0)
- return;
-
- unit_unwatch_pid(UNIT(s), s->control_pid);
- s->control_pid = 0;
-}
-
-static void service_unwatch_main_pid(Service *s) {
- assert(s);
-
- if (s->main_pid <= 0)
- return;
-
- unit_unwatch_pid(UNIT(s), s->main_pid);
- s->main_pid = 0;
-}
-
-static void service_unwatch_pid_file(Service *s) {
- if (!s->pid_file_pathspec)
- return;
-
- log_unit_debug(UNIT(s)->id, "Stopping watch for %s's PID file %s", UNIT(s)->id, s->pid_file_pathspec->path);
- path_spec_unwatch(s->pid_file_pathspec);
- path_spec_done(s->pid_file_pathspec);
- free(s->pid_file_pathspec);
- s->pid_file_pathspec = NULL;
-}
-
-static int service_set_main_pid(Service *s, pid_t pid) {
- pid_t ppid;
-
- assert(s);
-
- if (pid <= 1)
- return -EINVAL;
-
- if (pid == getpid())
- return -EINVAL;
-
- if (s->main_pid == pid && s->main_pid_known)
- return 0;
-
- if (s->main_pid != pid) {
- service_unwatch_main_pid(s);
- exec_status_start(&s->main_exec_status, pid);
- }
-
- s->main_pid = pid;
- s->main_pid_known = true;
-
- if (get_parent_of_pid(pid, &ppid) >= 0 && ppid != getpid()) {
- log_unit_warning(UNIT(s)->id, "%s: Supervising process "PID_FMT" which is not our child. We'll most likely not notice when it exits.", UNIT(s)->id, pid);
- s->main_pid_alien = true;
- } else
- s->main_pid_alien = false;
-
- return 0;
-}
-
-static void service_close_socket_fd(Service *s) {
- assert(s);
-
- s->socket_fd = asynchronous_close(s->socket_fd);
-}
-
-static void service_connection_unref(Service *s) {
- assert(s);
-
- if (!UNIT_ISSET(s->accept_socket))
- return;
-
- socket_connection_unref(SOCKET(UNIT_DEREF(s->accept_socket)));
- unit_ref_unset(&s->accept_socket);
-}
-
-static void service_stop_watchdog(Service *s) {
- assert(s);
-
- s->watchdog_event_source = sd_event_source_unref(s->watchdog_event_source);
- s->watchdog_timestamp = DUAL_TIMESTAMP_NULL;
-}
-
-static void service_start_watchdog(Service *s) {
- int r;
-
- assert(s);
-
- if (s->watchdog_usec <= 0)
- return;
-
- if (s->watchdog_event_source) {
- r = sd_event_source_set_time(s->watchdog_event_source, s->watchdog_timestamp.monotonic + s->watchdog_usec);
- if (r < 0) {
- log_unit_warning_errno(UNIT(s)->id, r, "%s failed to reset watchdog timer: %m", UNIT(s)->id);
- return;
- }
-
- r = sd_event_source_set_enabled(s->watchdog_event_source, SD_EVENT_ONESHOT);
- } else {
- r = sd_event_add_time(
- UNIT(s)->manager->event,
- &s->watchdog_event_source,
- CLOCK_MONOTONIC,
- s->watchdog_timestamp.monotonic + s->watchdog_usec, 0,
- service_dispatch_watchdog, s);
- if (r < 0) {
- log_unit_warning_errno(UNIT(s)->id, r, "%s failed to add watchdog timer: %m", UNIT(s)->id);
- return;
- }
-
- /* Let's process everything else which might be a sign
- * of living before we consider a service died. */
- r = sd_event_source_set_priority(s->watchdog_event_source, SD_EVENT_PRIORITY_IDLE);
- }
-
- if (r < 0)
- log_unit_warning_errno(UNIT(s)->id, r, "%s failed to install watchdog timer: %m", UNIT(s)->id);
-}
-
-static void service_reset_watchdog(Service *s) {
- assert(s);
-
- dual_timestamp_get(&s->watchdog_timestamp);
- service_start_watchdog(s);
-}
-
-static void service_fd_store_unlink(ServiceFDStore *fs) {
-
- if (!fs)
- return;
-
- if (fs->service) {
- assert(fs->service->n_fd_store > 0);
- LIST_REMOVE(fd_store, fs->service->fd_store, fs);
- fs->service->n_fd_store--;
- }
-
- if (fs->event_source) {
- sd_event_source_set_enabled(fs->event_source, SD_EVENT_OFF);
- sd_event_source_unref(fs->event_source);
- }
-
- safe_close(fs->fd);
- free(fs);
-}
-
-static void service_release_resources(Unit *u) {
- Service *s = SERVICE(u);
-
- assert(s);
-
- if (!s->fd_store)
- return;
-
- log_debug("Releasing all resources for %s", u->id);
-
- while (s->fd_store)
- service_fd_store_unlink(s->fd_store);
-
- assert(s->n_fd_store == 0);
-}
-
-static void service_done(Unit *u) {
- Service *s = SERVICE(u);
-
- assert(s);
-
- free(s->pid_file);
- s->pid_file = NULL;
-
- free(s->status_text);
- s->status_text = NULL;
-
- free(s->reboot_arg);
- s->reboot_arg = NULL;
-
- s->exec_runtime = exec_runtime_unref(s->exec_runtime);
- exec_command_free_array(s->exec_command, _SERVICE_EXEC_COMMAND_MAX);
- s->control_command = NULL;
- s->main_command = NULL;
-
- exit_status_set_free(&s->restart_prevent_status);
- exit_status_set_free(&s->restart_force_status);
- exit_status_set_free(&s->success_status);
-
- /* This will leak a process, but at least no memory or any of
- * our resources */
- service_unwatch_main_pid(s);
- service_unwatch_control_pid(s);
- service_unwatch_pid_file(s);
-
- if (s->bus_name) {
- unit_unwatch_bus_name(u, s->bus_name);
- free(s->bus_name);
- s->bus_name = NULL;
- }
-
- s->bus_endpoint_fd = safe_close(s->bus_endpoint_fd);
- service_close_socket_fd(s);
- service_connection_unref(s);
-
- unit_ref_unset(&s->accept_socket);
-
- service_stop_watchdog(s);
-
- s->timer_event_source = sd_event_source_unref(s->timer_event_source);
-
- service_release_resources(u);
-}
-
-static int on_fd_store_io(sd_event_source *e, int fd, uint32_t revents, void *userdata) {
- ServiceFDStore *fs = userdata;
-
- assert(e);
- assert(fs);
-
- /* If we get either EPOLLHUP or EPOLLERR, it's time to remove this entry from the fd store */
- service_fd_store_unlink(fs);
- return 0;
-}
-
-static int service_add_fd_store(Service *s, int fd) {
- ServiceFDStore *fs;
- int r;
-
- assert(s);
- assert(fd >= 0);
-
- if (s->n_fd_store >= s->n_fd_store_max)
- return 0;
-
- LIST_FOREACH(fd_store, fs, s->fd_store) {
- r = -EINVAL;
- if (r < 0)
- return r;
- if (r > 0) {
- /* Already included */
- safe_close(fd);
- return 1;
- }
- }
-
- fs = new0(ServiceFDStore, 1);
- if (!fs)
- return -ENOMEM;
-
- fs->fd = fd;
- fs->service = s;
-
- r = sd_event_add_io(UNIT(s)->manager->event, &fs->event_source, fd, 0, on_fd_store_io, fs);
- if (r < 0) {
- free(fs);
- return r;
- }
-
- LIST_PREPEND(fd_store, s->fd_store, fs);
- s->n_fd_store++;
-
- return 1;
-}
-
-static int service_add_fd_store_set(Service *s, FDSet *fds) {
- int r;
-
- assert(s);
-
- if (fdset_size(fds) <= 0)
- return 0;
-
- while (s->n_fd_store < s->n_fd_store_max) {
- _cleanup_close_ int fd = -1;
-
- fd = fdset_steal_first(fds);
- if (fd < 0)
- break;
-
- r = service_add_fd_store(s, fd);
- if (r < 0)
- return log_unit_error_errno(UNIT(s)->id, r, "%s: Couldn't add fd to fd store: %m", UNIT(s)->id);
-
- if (r > 0) {
- log_unit_debug(UNIT(s)->id, "%s: added fd to fd store.", UNIT(s)->id);
- fd = -1;
- }
- }
-
- if (fdset_size(fds) > 0)
- log_unit_warning(UNIT(s)->id, "%s: tried to store more fds than FDStoreMax=%u allows, closing remaining.", UNIT(s)->id, s->n_fd_store_max);
-
- return 0;
-}
-
-static int service_arm_timer(Service *s, usec_t usec) {
- int r;
-
- assert(s);
-
- if (s->timer_event_source) {
- r = sd_event_source_set_time(s->timer_event_source, now(CLOCK_MONOTONIC) + usec);
- if (r < 0)
- return r;
-
- return sd_event_source_set_enabled(s->timer_event_source, SD_EVENT_ONESHOT);
- }
-
- return sd_event_add_time(
- UNIT(s)->manager->event,
- &s->timer_event_source,
- CLOCK_MONOTONIC,
- now(CLOCK_MONOTONIC) + usec, 0,
- service_dispatch_timer, s);
-}
-
-static int service_verify(Service *s) {
- assert(s);
-
- if (UNIT(s)->load_state != UNIT_LOADED)
- return 0;
-
- if (!s->exec_command[SERVICE_EXEC_START] && !s->exec_command[SERVICE_EXEC_STOP]) {
- log_unit_error(UNIT(s)->id, "%s lacks both ExecStart= and ExecStop= setting. Refusing.", UNIT(s)->id);
- return -EINVAL;
- }
-
- if (s->type != SERVICE_ONESHOT && !s->exec_command[SERVICE_EXEC_START]) {
- log_unit_error(UNIT(s)->id, "%s has no ExecStart= setting, which is only allowed for Type=oneshot services. Refusing.", UNIT(s)->id);
- return -EINVAL;
- }
-
- if (!s->remain_after_exit && !s->exec_command[SERVICE_EXEC_START]) {
- log_unit_error(UNIT(s)->id, "%s has no ExecStart= setting, which is only allowed for RemainAfterExit=yes services. Refusing.", UNIT(s)->id);
- return -EINVAL;
- }
-
- if (s->type != SERVICE_ONESHOT && s->exec_command[SERVICE_EXEC_START]->command_next) {
- log_unit_error(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_unit_error(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_ONESHOT && !exit_status_set_is_empty(&s->restart_force_status)) {
- log_unit_error(UNIT(s)->id, "%s has RestartForceStatus= set, which isn't allowed for Type=oneshot services. Refusing.", UNIT(s)->id);
- return -EINVAL;
- }
-
- if (s->type == SERVICE_DBUS && !s->bus_name) {
- log_unit_error(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_unit_warning(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 || s->kill_context.kill_mode == KILL_MIXED)) {
- log_unit_error(UNIT(s)->id, "%s has PAM enabled. Kill mode must be set to 'control-group' or 'mixed'. 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 */
- r = unit_add_two_dependencies_by_name(UNIT(s), UNIT_AFTER, UNIT_REQUIRES, SPECIAL_BASIC_TARGET, NULL, true);
- if (r < 0)
- return r;
-
- /* Second, activate normal shutdown */
- return unit_add_two_dependencies_by_name(UNIT(s), UNIT_BEFORE, UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true);
-}
-
-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_add_extras(Service *s) {
- int r;
-
- assert(s);
-
- if (s->type == _SERVICE_TYPE_INVALID) {
- /* Figure out a type automatically */
- if (s->bus_name)
- s->type = SERVICE_DBUS;
- else if (s->exec_command[SERVICE_EXEC_START])
- s->type = SERVICE_SIMPLE;
- else
- s->type = SERVICE_ONESHOT;
- }
-
- /* 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_patch_contexts(UNIT(s));
- if (r < 0)
- return r;
-
- r = unit_add_exec_dependencies(UNIT(s), &s->exec_context);
- if (r < 0)
- return r;
-
- r = unit_add_default_slice(UNIT(s), &s->cgroup_context);
- if (r < 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->bus_name) {
-#ifdef ENABLE_KDBUS
- const char *n;
-
- n = strjoina(s->bus_name, ".busname");
- r = unit_add_dependency_by_name(UNIT(s), UNIT_AFTER, n, NULL, true);
- if (r < 0)
- return r;
-#endif
-
- r = unit_watch_bus_name(UNIT(s), s->bus_name);
- if (r < 0)
- return r;
- }
-
- if (UNIT(s)->default_dependencies) {
- r = service_add_default_dependencies(s);
- if (r < 0)
- return r;
- }
-
- return 0;
-}
-
-static int service_load(Unit *u) {
- Service *s = SERVICE(u);
- int r;
-
- assert(s);
-
- /* Load a .service file */
- r = unit_load_fragment(u);
- if (r < 0)
- return r;
-
- /* 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;
-
- /* This is a new unit? Then let's add in some
- * extras */
- r = service_add_extras(s);
- 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;
-
- assert(s);
-
- prefix = strempty(prefix);
- prefix2 = strjoina(prefix, "\t");
-
- 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"
- "%sNotifyState: %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),
- prefix, notify_state_to_string(s->notify_state));
-
- if (s->control_pid > 0)
- fprintf(f,
- "%sControl PID: "PID_FMT"\n",
- prefix, s->control_pid);
-
- if (s->main_pid > 0)
- fprintf(f,
- "%sMain PID: "PID_FMT"\n"
- "%sMain PID Known: %s\n"
- "%sMain PID Alien: %s\n",
- prefix, 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);
- }
-
- if (s->status_text)
- fprintf(f, "%sStatus Text: %s\n",
- prefix, s->status_text);
-
- if (s->n_fd_store_max > 0) {
- fprintf(f,
- "%sFile Descriptor Store Max: %u\n"
- "%sFile Descriptor Store Current: %u\n",
- prefix, s->n_fd_store_max,
- prefix, s->n_fd_store);
- }
-}
-
-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_unit_info(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_unit_info_errno(UNIT(s)->id, r, "Failed to read PID from file %s: %m", s->pid_file);
- return r;
- }
-
- if (!pid_is_alive(pid)) {
- if (may_warn)
- log_unit_info(UNIT(s)->id, "PID "PID_FMT" read from file %s does not exist or is a zombie.", pid, s->pid_file);
- return -ESRCH;
- }
-
- if (s->main_pid_known) {
- if (pid == s->main_pid)
- return 0;
-
- log_unit_debug(UNIT(s)->id, "Main PID changing: "PID_FMT" -> "PID_FMT, s->main_pid, pid);
-
- service_unwatch_main_pid(s);
- s->main_pid_known = false;
- } else
- log_unit_debug(UNIT(s)->id, "Main PID loaded: "PID_FMT, 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_unit_warning(UNIT(s)->id, "Failed to watch PID "PID_FMT" from service %s", 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_unit_debug(UNIT(s)->id, "Main PID guessed: "PID_FMT, 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_unit_warning(UNIT(s)->id, "Failed to watch PID "PID_FMT" from service %s", 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 (!IN_SET(state,
- SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
- SERVICE_RELOAD,
- SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
- SERVICE_STOP_SIGABRT, SERVICE_STOP_POST,
- SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL,
- SERVICE_AUTO_RESTART))
- s->timer_event_source = sd_event_source_unref(s->timer_event_source);
-
- if (!IN_SET(state,
- SERVICE_START, SERVICE_START_POST,
- SERVICE_RUNNING, SERVICE_RELOAD,
- SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
- SERVICE_STOP_SIGABRT, SERVICE_STOP_POST,
- SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) {
- service_unwatch_main_pid(s);
- s->main_command = NULL;
- }
-
- if (!IN_SET(state,
- SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
- SERVICE_RELOAD,
- SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
- SERVICE_STOP_SIGABRT, SERVICE_STOP_POST,
- SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) {
- service_unwatch_control_pid(s);
- s->control_command = NULL;
- s->control_command_id = _SERVICE_EXEC_COMMAND_INVALID;
- }
-
- if (IN_SET(state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART))
- unit_unwatch_all_pids(UNIT(s));
-
- if (!IN_SET(state,
- SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
- SERVICE_RUNNING, SERVICE_RELOAD,
- SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL, SERVICE_STOP_POST,
- SERVICE_STOP_SIGABRT, SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL) &&
- !(state == SERVICE_DEAD && UNIT(s)->job)) {
- service_close_socket_fd(s);
- service_connection_unref(s);
- }
-
- if (!IN_SET(state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD))
- 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_if_empty(UNIT(s));
-
- /* For remain_after_exit services, let's see if we can "release" the
- * hold on the console, since unit_notify() only does that in case of
- * change of state */
- if (state == SERVICE_EXITED &&
- s->remain_after_exit &&
- UNIT(s)->manager->n_on_console > 0) {
-
- ExecContext *ec;
-
- ec = unit_get_exec_context(UNIT(s));
- if (ec && exec_context_may_touch_console(ec)) {
- Manager *m = UNIT(s)->manager;
-
- m->n_on_console --;
- if (m->n_on_console == 0)
- /* unset no_console_output flag, since the console is free */
- m->no_console_output = false;
- }
- }
-
- if (old_state != state)
- log_unit_debug(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, Hashmap *deferred_work) {
- Service *s = SERVICE(u);
- int r;
-
- assert(s);
- assert(s->state == SERVICE_DEAD);
-
- if (s->deserialized_state != s->state) {
-
- if (IN_SET(s->deserialized_state,
- SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
- SERVICE_RELOAD,
- SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
- SERVICE_STOP_SIGABRT, SERVICE_STOP_POST,
- SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) {
-
- usec_t k;
-
- k = IN_SET(s->deserialized_state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RELOAD) ? s->timeout_start_usec : s->timeout_stop_usec;
-
- /* For the start/stop timeouts 0 means off */
- if (k > 0) {
- r = service_arm_timer(s, k);
- if (r < 0)
- return r;
- }
- }
-
- if (s->deserialized_state == SERVICE_AUTO_RESTART) {
-
- /* The restart timeouts 0 means immediately */
- r = service_arm_timer(s, s->restart_usec);
- if (r < 0)
- return r;
- }
-
- if (pid_is_unwaited(s->main_pid) &&
- ((s->deserialized_state == SERVICE_START && IN_SET(s->type, SERVICE_FORKING, SERVICE_DBUS, SERVICE_ONESHOT, SERVICE_NOTIFY)) ||
- IN_SET(s->deserialized_state,
- SERVICE_START, SERVICE_START_POST,
- SERVICE_RUNNING, SERVICE_RELOAD,
- SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
- SERVICE_STOP_SIGABRT, SERVICE_STOP_POST,
- SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL))) {
- r = unit_watch_pid(UNIT(s), s->main_pid);
- if (r < 0)
- return r;
- }
-
- if (pid_is_unwaited(s->control_pid) &&
- IN_SET(s->deserialized_state,
- SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST,
- SERVICE_RELOAD,
- SERVICE_STOP, SERVICE_STOP_SIGTERM, SERVICE_STOP_SIGKILL,
- SERVICE_STOP_SIGABRT, SERVICE_STOP_POST,
- SERVICE_FINAL_SIGTERM, SERVICE_FINAL_SIGKILL)) {
- r = unit_watch_pid(UNIT(s), s->control_pid);
- if (r < 0)
- return r;
- }
-
- if (!IN_SET(s->deserialized_state, SERVICE_DEAD, SERVICE_FAILED, SERVICE_AUTO_RESTART))
- unit_watch_all_pids(UNIT(s));
-
- if (IN_SET(s->deserialized_state, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD))
- service_start_watchdog(s);
-
- service_set_state(s, s->deserialized_state);
- }
-
- return 0;
-}
-
-static int service_collect_fds(Service *s, int **fds, unsigned *n_fds) {
- _cleanup_free_ int *rfds = NULL;
- unsigned rn_fds = 0;
- Iterator i;
- int r;
- 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)
- return r;
-
- if (cn_fds <= 0) {
- free(cfds);
- continue;
- }
-
- if (!rfds) {
- rfds = cfds;
- rn_fds = cn_fds;
- } else {
- int *t;
-
- t = realloc(rfds, (rn_fds + cn_fds) * sizeof(int));
- if (!t) {
- free(cfds);
- return -ENOMEM;
- }
-
- memcpy(t + rn_fds, cfds, cn_fds * sizeof(int));
- rfds = t;
- rn_fds += cn_fds;
-
- free(cfds);
-
- }
- }
-
- if (s->n_fd_store > 0) {
- ServiceFDStore *fs;
- int *t;
-
- t = realloc(rfds, (rn_fds + s->n_fd_store) * sizeof(int));
- if (!t)
- return -ENOMEM;
-
- rfds = t;
- LIST_FOREACH(fd_store, fs, s->fd_store)
- rfds[rn_fds++] = fs->fd;
- }
-
- *fds = rfds;
- *n_fds = rn_fds;
-
- rfds = NULL;
- return 0;
-}
-
-static int service_spawn(
- Service *s,
- ExecCommand *c,
- usec_t timeout,
- bool pass_fds,
- bool apply_permissions,
- bool apply_chroot,
- bool apply_tty_stdin,
- 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_free_ char *bus_endpoint_path = NULL;
- _cleanup_strv_free_ char
- **argv = NULL, **final_env = NULL, **our_env = NULL;
- const char *path;
- ExecParameters exec_params = {
- .apply_permissions = apply_permissions,
- .apply_chroot = apply_chroot,
- .apply_tty_stdin = apply_tty_stdin,
- .bus_endpoint_fd = -1,
- .selinux_context_net = s->socket_fd_selinux_context_net
- };
-
- assert(s);
- assert(c);
- assert(_pid);
-
- (void) unit_realize_cgroup(UNIT(s));
- if (s->reset_cpu_usage) {
- (void) unit_reset_cpu_usage(UNIT(s));
- s->reset_cpu_usage = false;
- }
-
- r = unit_setup_exec_runtime(UNIT(s));
- if (r < 0)
- goto fail;
-
- 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 > 0) {
- r = service_arm_timer(s, timeout);
- if (r < 0)
- goto fail;
- } else
- s->timer_event_source = sd_event_source_unref(s->timer_event_source);
-
- r = unit_full_printf_strv(UNIT(s), c->argv, &argv);
- if (r < 0)
- goto fail;
-
- our_env = new0(char*, 6);
- if (!our_env) {
- r = -ENOMEM;
- goto fail;
- }
-
- if (is_control ? s->notify_access == NOTIFY_ALL : s->notify_access != NOTIFY_NONE)
- 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="PID_FMT, s->main_pid) < 0) {
- r = -ENOMEM;
- goto fail;
- }
-
- if (UNIT(s)->manager->running_as != SYSTEMD_SYSTEM)
- if (asprintf(our_env + n_env++, "MANAGERPID="PID_FMT, getpid()) < 0) {
- r = -ENOMEM;
- goto fail;
- }
-
- if (UNIT_DEREF(s->accept_socket)) {
- union sockaddr_union sa;
- socklen_t salen = sizeof(sa);
-
- r = getpeername(s->socket_fd, &sa.sa, &salen);
- if (r < 0) {
- r = -errno;
- goto fail;
- }
-
- if (IN_SET(sa.sa.sa_family, AF_INET, AF_INET6)) {
- _cleanup_free_ char *addr = NULL;
- char *t;
- int port;
-
- r = sockaddr_pretty(&sa.sa, salen, true, false, &addr);
- if (r < 0)
- goto fail;
-
- t = strappend("REMOTE_ADDR=", addr);
- if (!t) {
- r = -ENOMEM;
- goto fail;
- }
- our_env[n_env++] = t;
-
- port = sockaddr_port(&sa.sa);
- if (port < 0) {
- r = port;
- goto fail;
- }
-
- if (asprintf(&t, "REMOTE_PORT=%u", port) < 0) {
- r = -ENOMEM;
- goto fail;
- }
- our_env[n_env++] = t;
- }
- }
-
- 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 = strjoina(UNIT(s)->cgroup_path, "/control");
- cg_create(SYSTEMD_CGROUP_CONTROLLER, path);
- } else
- path = UNIT(s)->cgroup_path;
-
-#ifdef ENABLE_KDBUS
- if (s->exec_context.bus_endpoint) {
- r = bus_kernel_create_endpoint(UNIT(s)->manager->running_as == SYSTEMD_SYSTEM ? "system" : "user",
- UNIT(s)->id, &bus_endpoint_path);
- if (r < 0)
- goto fail;
-
- /* Pass the fd to the exec_params so that the child process can upload the policy.
- * Keep a reference to the fd in the service, so the endpoint is kept alive as long
- * as the service is running. */
- exec_params.bus_endpoint_fd = s->bus_endpoint_fd = r;
- }
-#endif
-
- exec_params.argv = argv;
- exec_params.fds = fds;
- exec_params.n_fds = n_fds;
- exec_params.environment = final_env;
- exec_params.confirm_spawn = UNIT(s)->manager->confirm_spawn;
- exec_params.cgroup_supported = UNIT(s)->manager->cgroup_supported;
- exec_params.cgroup_path = path;
- exec_params.cgroup_delegate = s->cgroup_context.delegate;
- exec_params.runtime_prefix = manager_get_runtime_prefix(UNIT(s)->manager);
- exec_params.unit_id = UNIT(s)->id;
- exec_params.watchdog_usec = s->watchdog_usec;
- exec_params.bus_endpoint_path = bus_endpoint_path;
- if (s->type == SERVICE_IDLE)
- exec_params.idle_pipe = UNIT(s)->manager->idle_pipe;
-
- r = exec_spawn(c,
- &s->exec_context,
- &exec_params,
- s->exec_runtime,
- &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)
- s->timer_event_source = sd_event_source_unref(s->timer_event_source);
-
- 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 pid_is_alive(s->main_pid);
-
- /* .. 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 (s->result != SERVICE_SUCCESS) {
- log_unit_warning(UNIT(s)->id, "%s failed.", UNIT(s)->id);
- failure_action(UNIT(s)->manager, s->failure_action, s->reboot_arg);
- }
-
- 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_ABNORMAL && !IN_SET(s->result, SERVICE_SUCCESS, SERVICE_FAILURE_EXIT_CODE)) ||
- (s->restart == SERVICE_RESTART_ON_WATCHDOG && s->result == SERVICE_FAILURE_WATCHDOG) ||
- (s->restart == SERVICE_RESTART_ON_ABORT && IN_SET(s->result, SERVICE_FAILURE_SIGNAL, SERVICE_FAILURE_CORE_DUMP)) ||
- (s->main_exec_status.code == CLD_EXITED && set_contains(s->restart_force_status.status, INT_TO_PTR(s->main_exec_status.status))) ||
- (IN_SET(s->main_exec_status.code, CLD_KILLED, CLD_DUMPED) && set_contains(s->restart_force_status.signal, INT_TO_PTR(s->main_exec_status.status)))) &&
- (s->main_exec_status.code != CLD_EXITED || !set_contains(s->restart_prevent_status.status, INT_TO_PTR(s->main_exec_status.status))) &&
- (!IN_SET(s->main_exec_status.code, CLD_KILLED, CLD_DUMPED) || !set_contains(s->restart_prevent_status.signal, INT_TO_PTR(s->main_exec_status.status)))) {
-
- r = service_arm_timer(s, s->restart_usec);
- 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_runtime_destroy(s->exec_runtime);
- s->exec_runtime = exec_runtime_unref(s->exec_runtime);
-
- /* Also, remove the runtime directory in */
- exec_context_destroy_runtime_directory(&s->exec_context, manager_get_runtime_prefix(UNIT(s)->manager));
-
- /* 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_unit_warning_errno(UNIT(s)->id, r, "%s failed to run install restart timer: %m", UNIT(s)->id);
- 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);
- unit_watch_all_pids(UNIT(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,
- s->timeout_stop_usec,
- false,
- !s->permissions_start_only,
- !s->root_directory_start_only,
- true,
- true,
- &s->control_pid);
- if (r < 0)
- goto fail;
-
- service_set_state(s, SERVICE_STOP_POST);
- } else
- service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_SUCCESS);
-
- return;
-
-fail:
- log_unit_warning_errno(UNIT(s)->id, r, "%s failed to run 'stop-post' task: %m", UNIT(s)->id);
- 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;
-
- unit_watch_all_pids(UNIT(s));
-
- r = unit_kill_context(
- UNIT(s),
- &s->kill_context,
- (state != SERVICE_STOP_SIGTERM && state != SERVICE_FINAL_SIGTERM && state != SERVICE_STOP_SIGABRT) ?
- KILL_KILL : (state == SERVICE_STOP_SIGABRT ? KILL_ABORT : KILL_TERMINATE),
- 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 = service_arm_timer(s, s->timeout_stop_usec);
- if (r < 0)
- goto fail;
- }
-
- service_set_state(s, state);
- } else if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGABRT)
- service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_SUCCESS);
- else if (state == SERVICE_STOP_SIGKILL)
- service_enter_stop_post(s, SERVICE_SUCCESS);
- else if (state == SERVICE_FINAL_SIGTERM)
- service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_SUCCESS);
- else
- service_enter_dead(s, SERVICE_SUCCESS, true);
-
- return;
-
-fail:
- log_unit_warning_errno(UNIT(s)->id, r, "%s failed to kill processes: %m", UNIT(s)->id);
-
- if (state == SERVICE_STOP_SIGTERM || state == SERVICE_STOP_SIGKILL ||
- state == SERVICE_STOP_SIGABRT)
- service_enter_stop_post(s, SERVICE_FAILURE_RESOURCES);
- else
- service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
-}
-
-static void service_enter_stop_by_notify(Service *s) {
- assert(s);
-
- unit_watch_all_pids(UNIT(s));
-
- if (s->timeout_stop_usec > 0)
- service_arm_timer(s, s->timeout_stop_usec);
-
- /* The service told us it's stopping, so it's as if we SIGTERM'd it. */
- service_set_state(s, SERVICE_STOP_SIGTERM);
-}
-
-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);
- unit_watch_all_pids(UNIT(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,
- s->timeout_stop_usec,
- false,
- !s->permissions_start_only,
- !s->root_directory_start_only,
- 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_unit_warning_errno(UNIT(s)->id, r, "%s failed to run 'stop' task: %m", UNIT(s)->id);
- 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)) {
-
- /* If there are any queued up sd_notify()
- * notifications, process them now */
- if (s->notify_state == NOTIFY_RELOADING)
- service_enter_reload_by_notify(s);
- else if (s->notify_state == NOTIFY_STOPPING)
- service_enter_stop_by_notify(s);
- else
- 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);
- 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,
- s->timeout_start_usec,
- false,
- !s->permissions_start_only,
- !s->root_directory_start_only,
- 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_unit_warning_errno(UNIT(s)->id, r, "%s failed to run 'start-post' task: %m", UNIT(s)->id);
- service_enter_stop(s, SERVICE_FAILURE_RESOURCES);
-}
-
-static void service_kill_control_processes(Service *s) {
- char *p;
-
- if (!UNIT(s)->cgroup_path)
- return;
-
- p = strjoina(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);
-
- 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];
- }
-
- if (!c) {
- assert(s->type == SERVICE_ONESHOT);
- service_enter_start_post(s);
- return;
- }
-
- r = service_spawn(s,
- c,
- IN_SET(s->type, SERVICE_FORKING, SERVICE_DBUS, SERVICE_NOTIFY, SERVICE_ONESHOT) ? s->timeout_start_usec : 0,
- true,
- true,
- true,
- true,
- 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_unit_warning_errno(UNIT(s)->id, r, "%s failed to run 'start' task: %m", UNIT(s)->id);
- 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,
- s->timeout_start_usec,
- false,
- !s->permissions_start_only,
- !s->root_directory_start_only,
- true,
- true,
- &s->control_pid);
- if (r < 0)
- goto fail;
-
- service_set_state(s, SERVICE_START_PRE);
- } else
- service_enter_start(s);
-
- return;
-
-fail:
- log_unit_warning_errno(UNIT(s)->id, r, "%s failed to run 'start-pre' task: %m", UNIT(s)->id);
- service_enter_dead(s, SERVICE_FAILURE_RESOURCES, true);
-}
-
-static void service_enter_restart(Service *s) {
- _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
- int r;
-
- assert(s);
-
- if (UNIT(s)->job && UNIT(s)->job->type == JOB_STOP) {
- /* Don't restart things if we are going down anyway */
- log_unit_info(UNIT(s)->id, "Stop job pending for unit, delaying automatic restart.");
-
- r = service_arm_timer(s, s->restart_usec);
- 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_unit_debug(UNIT(s)->id, "%s scheduled restart job.", UNIT(s)->id);
- return;
-
-fail:
- log_unit_warning(UNIT(s)->id, "%s failed to schedule restart job: %s", UNIT(s)->id, bus_error_message(&error, -r));
- service_enter_dead(s, SERVICE_FAILURE_RESOURCES, false);
-}
-
-static void service_enter_reload_by_notify(Service *s) {
- assert(s);
-
- if (s->timeout_start_usec > 0)
- service_arm_timer(s, s->timeout_start_usec);
-
- service_set_state(s, SERVICE_RELOAD);
-}
-
-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,
- s->timeout_start_usec,
- false,
- !s->permissions_start_only,
- !s->root_directory_start_only,
- 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_unit_warning_errno(UNIT(s)->id, r, "%s failed to run 'reload' task: %m", UNIT(s)->id);
- 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,
- IN_SET(s->state, SERVICE_START_PRE, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD) ? s->timeout_start_usec : s->timeout_stop_usec,
- 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,
- true,
- &s->control_pid);
- if (r < 0)
- goto fail;
-
- return;
-
-fail:
- log_unit_warning_errno(UNIT(s)->id, r, "%s failed to run next control task: %m", UNIT(s)->id);
-
- 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,
- s->timeout_start_usec,
- true,
- true,
- true,
- true,
- false,
- &pid);
- if (r < 0)
- goto fail;
-
- service_set_main_pid(s, pid);
-
- return;
-
-fail:
- log_unit_warning_errno(UNIT(s)->id, r, "%s failed to run next main task: %m", UNIT(s)->id);
- 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;
-
- log_unit_warning(UNIT(s)->id, "start request repeated too quickly for %s", UNIT(s)->id);
-
- return failure_action(UNIT(s)->manager, s->start_limit_action, s->reboot_arg);
-}
-
-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_SIGABRT ||
- 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;
- s->reset_cpu_usage = true;
-
- free(s->status_text);
- s->status_text = NULL;
- s->status_errno = 0;
-
- s->notify_state = NOTIFY_UNKNOWN;
-
- service_enter_start_pre(s);
- return 1;
-}
-
-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_SIGABRT ||
- 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 1;
-}
-
-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);
- ServiceFDStore *fs;
-
- 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", PID_FMT,
- s->control_pid);
-
- if (s->main_pid_known && s->main_pid > 0)
- unit_serialize_item_format(u, f, "main-pid", PID_FMT, 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;
-
- copy = fdset_put_dup(fds, s->socket_fd);
- if (copy < 0)
- return copy;
-
- unit_serialize_item_format(u, f, "socket-fd", "%i", copy);
- }
-
- if (s->bus_endpoint_fd >= 0) {
- int copy;
-
- copy = fdset_put_dup(fds, s->bus_endpoint_fd);
- if (copy < 0)
- return copy;
-
- unit_serialize_item_format(u, f, "endpoint-fd", "%i", copy);
- }
-
- LIST_FOREACH(fd_store, fs, s->fd_store) {
- int copy;
-
- copy = fdset_put_dup(fds, fs->fd);
- if (copy < 0)
- return copy;
-
- unit_serialize_item_format(u, f, "fd-store-fd", "%i", copy);
- }
-
- if (s->main_exec_status.pid > 0) {
- unit_serialize_item_format(u, f, "main-exec-status-pid", PID_FMT,
- 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->forbid_restart)
- unit_serialize_item(u, f, "forbid-restart", yes_no(s->forbid_restart));
-
- return 0;
-}
-
-static int service_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
- Service *s = SERVICE(u);
- int r;
-
- assert(u);
- assert(key);
- assert(value);
- assert(fds);
-
- if (streq(key, "state")) {
- ServiceState state;
-
- state = service_state_from_string(value);
- if (state < 0)
- log_unit_debug(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_unit_debug(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_unit_debug(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_unit_debug(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_unit_debug(u->id, "Failed to parse main-pid value %s", value);
- else {
- service_set_main_pid(s, pid);
- unit_watch_pid(UNIT(s), pid);
- }
- } else if (streq(key, "main-pid-known")) {
- int b;
-
- b = parse_boolean(value);
- if (b < 0)
- log_unit_debug(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_unit_debug(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_unit_debug(u->id, "Failed to parse socket-fd value %s", value);
- else {
- asynchronous_close(s->socket_fd);
- s->socket_fd = fdset_remove(fds, fd);
- }
- } else if (streq(key, "endpoint-fd")) {
- int fd;
-
- if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
- log_unit_debug(u->id, "Failed to parse endpoint-fd value %s", value);
- else {
- safe_close(s->bus_endpoint_fd);
- s->bus_endpoint_fd = fdset_remove(fds, fd);
- }
- } else if (streq(key, "fd-store-fd")) {
- int fd;
-
- if (safe_atoi(value, &fd) < 0 || fd < 0 || !fdset_contains(fds, fd))
- log_unit_debug(u->id, "Failed to parse fd-store-fd value %s", value);
- else {
- r = service_add_fd_store(s, fd);
- if (r < 0)
- log_unit_error_errno(u->id, r, "Failed to add fd to store: %m");
- else if (r > 0)
- fdset_remove(fds, fd);
- }
-
- } else if (streq(key, "main-exec-status-pid")) {
- pid_t pid;
-
- if (parse_pid(value, &pid) < 0)
- log_unit_debug(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_unit_debug(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_unit_debug(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, "forbid-restart")) {
- int b;
-
- b = parse_boolean(value);
- if (b < 0)
- log_unit_debug(u->id, "Failed to parse forbid-restart value %s", value);
- else
- s->forbid_restart = b;
- } else
- log_unit_debug(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;
-
- return false;
-}
-
-_pure_ static bool service_check_snapshot(Unit *u) {
- Service *s = SERVICE(u);
-
- assert(s);
-
- return s->socket_fd < 0;
-}
-
-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_unit_debug(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, service_dispatch_io);
- if (r < 0)
- goto fail;
-
- /* the pidfile might have appeared just before we set the watch */
- log_unit_debug(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_unit_error_errno(UNIT(s)->id, r, "Failed to set a watch for %s's PID file %s: %m", UNIT(s)->id, s->pid_file_pathspec->path);
- 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->unit = UNIT(s);
- 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 int service_dispatch_io(sd_event_source *source, int fd, uint32_t events, void *userdata) {
- PathSpec *p = userdata;
- Service *s;
-
- assert(p);
-
- s = SERVICE(p->unit);
-
- 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_unit_debug(UNIT(s)->id, "inotify event for %s", UNIT(s)->id);
-
- if (path_spec_fd_event(p, events) < 0)
- goto fail;
-
- if (service_retry_pid_file(s) == 0)
- return 0;
-
- if (service_watch_pid_file(s) < 0)
- goto fail;
-
- return 0;
-
-fail:
- service_unwatch_pid_file(s);
- service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_RESOURCES);
- return 0;
-}
-
-static void service_notify_cgroup_empty_event(Unit *u) {
- Service *s = SERVICE(u);
-
- assert(u);
-
- log_unit_debug(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_unit_warning(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_SIGABRT:
- 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_STOP_POST:
- 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_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_unit_struct(u->id,
- f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE,
- LOG_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_unit_debug(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_SIGABRT:
- 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;
-
- case SERVICE_STOP_POST:
- case SERVICE_FINAL_SIGTERM:
- case SERVICE_FINAL_SIGKILL:
-
- if (!control_pid_good(s))
- service_enter_dead(s, f, true);
- 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_unit_full(u->id,
- f == SERVICE_SUCCESS ? LOG_DEBUG : LOG_NOTICE,
- "%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_unit_debug(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_unit_debug(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_SIGABRT:
- 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:
- if (main_pid_good(s) <= 0)
- 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);
-
- /* We got one SIGCHLD for the service, let's watch all
- * processes that are now running of the service, and watch
- * that. Among the PIDs we then watch will be children
- * reassigned to us, which hopefully allows us to identify
- * when all children are gone */
- unit_tidy_watch_pids(u, s->main_pid, s->control_pid);
- unit_watch_all_pids(u);
-
- /* If the PID set is empty now, then let's finish this off */
- if (set_isempty(u->pids))
- service_notify_cgroup_empty_event(u);
-}
-
-static int service_dispatch_timer(sd_event_source *source, usec_t usec, void *userdata) {
- Service *s = SERVICE(userdata);
-
- assert(s);
- assert(source == s->timer_event_source);
-
- switch (s->state) {
-
- case SERVICE_START_PRE:
- case SERVICE_START:
- log_unit_warning(UNIT(s)->id, "%s %s operation timed out. Terminating.", UNIT(s)->id, s->state == SERVICE_START ? "start" : "start-pre");
- service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
- break;
-
- case SERVICE_START_POST:
- log_unit_warning(UNIT(s)->id, "%s start-post operation timed out. Stopping.", UNIT(s)->id);
- service_enter_stop(s, SERVICE_FAILURE_TIMEOUT);
- break;
-
- case SERVICE_RELOAD:
- log_unit_warning(UNIT(s)->id, "%s reload operation timed out. Stopping.", UNIT(s)->id);
- s->reload_result = SERVICE_FAILURE_TIMEOUT;
- service_enter_running(s, SERVICE_SUCCESS);
- break;
-
- case SERVICE_STOP:
- log_unit_warning(UNIT(s)->id, "%s stopping timed out. Terminating.", UNIT(s)->id);
- service_enter_signal(s, SERVICE_STOP_SIGTERM, SERVICE_FAILURE_TIMEOUT);
- break;
-
- case SERVICE_STOP_SIGABRT:
- log_unit_warning(UNIT(s)->id,
- "%s stop-sigabrt timed out. Terminating.", UNIT(s)->id);
- service_enter_signal(s, SERVICE_STOP_SIGTERM, s->result);
- break;
-
- case SERVICE_STOP_SIGTERM:
- if (s->kill_context.send_sigkill) {
- log_unit_warning(UNIT(s)->id, "%s stop-sigterm timed out. Killing.", UNIT(s)->id);
- service_enter_signal(s, SERVICE_STOP_SIGKILL, SERVICE_FAILURE_TIMEOUT);
- } else {
- log_unit_warning(UNIT(s)->id, "%s stop-sigterm timed out. Skipping SIGKILL.", UNIT(s)->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_unit_warning(UNIT(s)->id, "%s still around after SIGKILL. Ignoring.", UNIT(s)->id);
- service_enter_stop_post(s, SERVICE_FAILURE_TIMEOUT);
- break;
-
- case SERVICE_STOP_POST:
- log_unit_warning(UNIT(s)->id, "%s stop-post timed out. Terminating.", UNIT(s)->id);
- service_enter_signal(s, SERVICE_FINAL_SIGTERM, SERVICE_FAILURE_TIMEOUT);
- break;
-
- case SERVICE_FINAL_SIGTERM:
- if (s->kill_context.send_sigkill) {
- log_unit_warning(UNIT(s)->id, "%s stop-final-sigterm timed out. Killing.", UNIT(s)->id);
- service_enter_signal(s, SERVICE_FINAL_SIGKILL, SERVICE_FAILURE_TIMEOUT);
- } else {
- log_unit_warning(UNIT(s)->id, "%s stop-final-sigterm timed out. Skipping SIGKILL. Entering failed mode.", UNIT(s)->id);
- service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, false);
- }
-
- break;
-
- case SERVICE_FINAL_SIGKILL:
- log_unit_warning(UNIT(s)->id, "%s still around after final SIGKILL. Entering failed mode.", UNIT(s)->id);
- service_enter_dead(s, SERVICE_FAILURE_TIMEOUT, true);
- break;
-
- case SERVICE_AUTO_RESTART:
- log_unit_info(UNIT(s)->id,
- s->restart_usec > 0 ?
- "%s holdoff time over, scheduling restart." :
- "%s has no holdoff time, scheduling restart.",
- UNIT(s)->id);
- service_enter_restart(s);
- break;
-
- default:
- assert_not_reached("Timeout at wrong time.");
- }
-
- return 0;
-}
-
-static int service_dispatch_watchdog(sd_event_source *source, usec_t usec, void *userdata) {
- Service *s = SERVICE(userdata);
- char t[FORMAT_TIMESPAN_MAX];
-
- assert(s);
- assert(source == s->watchdog_event_source);
-
- log_unit_error(UNIT(s)->id, "%s watchdog timeout (limit %s)!", UNIT(s)->id,
- format_timespan(t, sizeof(t), s->watchdog_usec, 1));
-
- service_enter_signal(s, SERVICE_STOP_SIGABRT, SERVICE_FAILURE_WATCHDOG);
-
- return 0;
-}
-
-static void service_notify_message(Unit *u, pid_t pid, char **tags, FDSet *fds) {
- Service *s = SERVICE(u);
- _cleanup_free_ char *cc = NULL;
- bool notify_dbus = false;
- const char *e;
-
- assert(u);
-
- cc = strv_join(tags, ", ");
- log_unit_debug(u->id, "%s: Got notification message from PID "PID_FMT" (%s)",
- u->id, pid, isempty(cc) ? "n/a" : cc);
-
- if (s->notify_access == NOTIFY_NONE) {
- log_unit_warning(u->id, "%s: Got notification message from PID "PID_FMT", but reception is disabled.", u->id, pid);
- return;
- }
-
- if (s->notify_access == NOTIFY_MAIN && pid != s->main_pid) {
- if (s->main_pid != 0)
- log_unit_warning(u->id, "%s: Got notification message from PID "PID_FMT", but reception only permitted for main PID "PID_FMT, u->id, pid, s->main_pid);
- else
- log_unit_debug(u->id, "%s: Got notification message from PID "PID_FMT", but reception only permitted for main PID which is currently not known", u->id, pid);
- return;
- }
-
- /* Interpret MAINPID= */
- e = strv_find_startswith(tags, "MAINPID=");
- if (e && IN_SET(s->state, SERVICE_START, SERVICE_START_POST, SERVICE_RUNNING, SERVICE_RELOAD)) {
- if (parse_pid(e, &pid) < 0)
- log_unit_warning(u->id, "Failed to parse MAINPID= field in notification message: %s", e);
- else {
- log_unit_debug(u->id, "%s: got MAINPID=%s", u->id, e);
-
- service_set_main_pid(s, pid);
- unit_watch_pid(UNIT(s), pid);
- notify_dbus = true;
- }
- }
-
- /* Interpret RELOADING= */
- if (strv_find(tags, "RELOADING=1")) {
-
- log_unit_debug(u->id, "%s: got RELOADING=1", u->id);
- s->notify_state = NOTIFY_RELOADING;
-
- if (s->state == SERVICE_RUNNING)
- service_enter_reload_by_notify(s);
-
- notify_dbus = true;
- }
-
- /* Interpret READY= */
- if (strv_find(tags, "READY=1")) {
-
- log_unit_debug(u->id, "%s: got READY=1", u->id);
- s->notify_state = NOTIFY_READY;
-
- /* Type=notify services inform us about completed
- * initialization with READY=1 */
- if (s->type == SERVICE_NOTIFY && s->state == SERVICE_START)
- service_enter_start_post(s);
-
- /* Sending READY=1 while we are reloading informs us
- * that the reloading is complete */
- if (s->state == SERVICE_RELOAD && s->control_pid == 0)
- service_enter_running(s, SERVICE_SUCCESS);
-
- notify_dbus = true;
- }
-
- /* Interpret STOPPING= */
- if (strv_find(tags, "STOPPING=1")) {
-
- log_unit_debug(u->id, "%s: got STOPPING=1", u->id);
- s->notify_state = NOTIFY_STOPPING;
-
- if (s->state == SERVICE_RUNNING)
- service_enter_stop_by_notify(s);
-
- notify_dbus = true;
- }
-
- /* Interpret STATUS= */
- e = strv_find_startswith(tags, "STATUS=");
- if (e) {
- _cleanup_free_ char *t = NULL;
-
- if (!isempty(e)) {
- if (!utf8_is_valid(e))
- log_unit_warning(u->id, "Status message in notification is not UTF-8 clean.");
- else {
- log_unit_debug(u->id, "%s: got STATUS=%s", u->id, e);
-
- t = strdup(e);
- if (!t)
- log_oom();
- }
- }
-
- if (!streq_ptr(s->status_text, t)) {
-
- free(s->status_text);
- s->status_text = t;
- t = NULL;
-
- notify_dbus = true;
- }
- }
-
- /* Interpret ERRNO= */
- e = strv_find_startswith(tags, "ERRNO=");
- if (e) {
- int status_errno;
-
- if (safe_atoi(e, &status_errno) < 0 || status_errno < 0)
- log_unit_warning(u->id, "Failed to parse ERRNO= field in notification message: %s", e);
- else {
- log_unit_debug(u->id, "%s: got ERRNO=%s", u->id, e);
-
- if (s->status_errno != status_errno) {
- s->status_errno = status_errno;
- notify_dbus = true;
- }
- }
- }
-
- /* Interpret WATCHDOG= */
- if (strv_find(tags, "WATCHDOG=1")) {
- log_unit_debug(u->id, "%s: got WATCHDOG=1", u->id);
- service_reset_watchdog(s);
- }
-
- /* Add the passed fds to the fd store */
- if (strv_find(tags, "FDSTORE=1")) {
- log_unit_debug(u->id, "%s: got FDSTORE=1", u->id);
- service_add_fd_store_set(s, fds);
- }
-
- /* Notify clients about changed status or main pid */
- if (notify_dbus)
- unit_add_to_dbus_queue(u);
-}
-
-static int service_get_timeout(Unit *u, uint64_t *timeout) {
- Service *s = SERVICE(u);
- int r;
-
- if (!s->timer_event_source)
- return 0;
-
- r = sd_event_source_get_time(s->timer_event_source, timeout);
- if (r < 0)
- return r;
-
- return 1;
-}
-
-static void service_bus_name_owner_change(
- Unit *u,
- const char *name,
- const char *old_owner,
- const char *new_owner) {
-
- Service *s = SERVICE(u);
- int r;
-
- assert(s);
- assert(name);
-
- assert(streq(s->bus_name, name));
- assert(old_owner || new_owner);
-
- if (old_owner && new_owner)
- log_unit_debug(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_unit_debug(u->id, "%s's D-Bus name %s no longer registered by %s", u->id, name, old_owner);
- else
- log_unit_debug(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)) {
-
- _cleanup_bus_creds_unref_ sd_bus_creds *creds = NULL;
- pid_t pid;
-
- /* Try to acquire PID from bus service */
-
- r = sd_bus_get_name_creds(u->manager->api_bus, name, SD_BUS_CREDS_PID, &creds);
- if (r >= 0)
- r = sd_bus_creds_get_pid(creds, &pid);
- if (r >= 0) {
- log_unit_debug(u->id, "%s's D-Bus name %s is now owned by process %u", u->id, name, (unsigned) pid);
-
- service_set_main_pid(s, pid);
- unit_watch_pid(UNIT(s), pid);
- }
- }
-}
-
-int service_set_socket_fd(Service *s, int fd, Socket *sock, bool selinux_context_net) {
- _cleanup_free_ char *peer = NULL;
- int r;
-
- 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;
-
- if (getpeername_pretty(fd, &peer) >= 0) {
-
- if (UNIT(s)->description) {
- _cleanup_free_ char *a;
-
- a = strjoin(UNIT(s)->description, " (", peer, ")", NULL);
- if (!a)
- return -ENOMEM;
-
- r = unit_set_description(UNIT(s), a);
- } else
- r = unit_set_description(UNIT(s), peer);
-
- if (r < 0)
- return r;
- }
-
- s->socket_fd = fd;
- s->socket_fd_selinux_context_net = selinux_context_net;
-
- 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, sd_bus_error *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_SIGABRT] = "stop-sigabrt",
- [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_ABNORMAL] = "on-abnormal",
- [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 notify_state_table[_NOTIFY_STATE_MAX] = {
- [NOTIFY_UNKNOWN] = "unknown",
- [NOTIFY_READY] = "ready",
- [NOTIFY_RELOADING] = "reloading",
- [NOTIFY_STOPPING] = "stopping",
-};
-
-DEFINE_STRING_TABLE_LOOKUP(notify_state, NotifyState);
-
-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);
-
-const UnitVTable service_vtable = {
- .object_size = sizeof(Service),
- .exec_context_offset = offsetof(Service, exec_context),
- .cgroup_context_offset = offsetof(Service, cgroup_context),
- .kill_context_offset = offsetof(Service, kill_context),
- .exec_runtime_offset = offsetof(Service, exec_runtime),
-
- .sections =
- "Unit\0"
- "Service\0"
- "Install\0",
- .private_section = "Service",
-
- .init = service_init,
- .done = service_done,
- .load = service_load,
- .release_resources = service_release_resources,
-
- .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,
-
- .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_interface = "org.freedesktop.systemd1.Service",
- .bus_vtable = bus_service_vtable,
- .bus_set_property = bus_service_set_property,
- .bus_commit_properties = bus_service_commit_properties,
-
- .get_timeout = service_get_timeout,
- .can_transient = true,
-
- .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.",
- },
- },
-};
~ianmdlvl / elogind.git / blobdiff