コード例 #1
0
ファイル: scope.c プロジェクト: halfline/systemd
static int scope_load(Unit *u) {
        Scope *s = SCOPE(u);
        int r;

        assert(s);
        assert(u->load_state == UNIT_STUB);

        if (!u->transient && !MANAGER_IS_RELOADING(u->manager))
                /* Refuse to load non-transient scope units, but allow them while reloading. */
                return -ENOENT;

        r = scope_load_init_scope(u);
        if (r < 0)
                return r;
        r = unit_load_fragment_and_dropin_optional(u);
        if (r < 0)
                return r;

        if (u->load_state == UNIT_LOADED) {
                r = unit_patch_contexts(u);
                if (r < 0)
                        return r;

                r = unit_set_default_slice(u);
                if (r < 0)
                        return r;

                r = scope_add_default_dependencies(s);
                if (r < 0)
                        return r;
        }

        return scope_verify(s);
}
コード例 #2
0
ファイル: scope.c プロジェクト: halfline/systemd
static int scope_verify(Scope *s) {
        assert(s);

        if (UNIT(s)->load_state != UNIT_LOADED)
                return 0;

        if (set_isempty(UNIT(s)->pids) &&
            !MANAGER_IS_RELOADING(UNIT(s)->manager) &&
            !unit_has_name(UNIT(s), SPECIAL_INIT_SCOPE)) {
                log_unit_error(UNIT(s), "Scope has no PIDs. Refusing.");
                return -ENOENT;
        }

        return 0;
}
コード例 #3
0
ファイル: scope.c プロジェクト: halfline/systemd
static int scope_start(Unit *u) {
        Scope *s = SCOPE(u);
        int r;

        assert(s);

        if (unit_has_name(u, SPECIAL_INIT_SCOPE))
                return -EPERM;

        if (s->state == SCOPE_FAILED)
                return -EPERM;

        /* We can't fulfill this right now, please try again later */
        if (IN_SET(s->state, SCOPE_STOP_SIGTERM, SCOPE_STOP_SIGKILL))
                return -EAGAIN;

        assert(s->state == SCOPE_DEAD);

        if (!u->transient && !MANAGER_IS_RELOADING(u->manager))
                return -ENOENT;

        (void) bus_scope_track_controller(s);

        r = unit_acquire_invocation_id(u);
        if (r < 0)
                return r;

        (void) unit_realize_cgroup(u);
        (void) unit_reset_cpu_accounting(u);
        (void) unit_reset_ip_accounting(u);

        unit_export_state_files(UNIT(s));

        r = unit_attach_pids_to_cgroup(u, UNIT(s)->pids, NULL);
        if (r < 0) {
                log_unit_warning_errno(UNIT(s), r, "Failed to add PIDs to scope's control group: %m");
                scope_enter_dead(s, SCOPE_FAILURE_RESOURCES);
                return r;
        }

        s->result = SCOPE_SUCCESS;

        scope_set_state(s, SCOPE_RUNNING);

        /* Start watching the PIDs currently in the scope */
        (void) unit_enqueue_rewatch_pids(UNIT(s));
        return 1;
}
コード例 #4
0
ファイル: scope.c プロジェクト: ChALkeR/systemd
static int scope_start(Unit *u) {
        Scope *s = SCOPE(u);
        int r;

        assert(s);

        if (unit_has_name(u, SPECIAL_INIT_SCOPE))
                return -EPERM;

        if (s->state == SCOPE_FAILED)
                return -EPERM;

        /* We can't fulfill this right now, please try again later */
        if (s->state == SCOPE_STOP_SIGTERM ||
            s->state == SCOPE_STOP_SIGKILL)
                return -EAGAIN;

        assert(s->state == SCOPE_DEAD);

        if (!u->transient && !MANAGER_IS_RELOADING(u->manager))
                return -ENOENT;

        (void) unit_realize_cgroup(u);
        (void) unit_reset_cpu_usage(u);

        r = unit_attach_pids_to_cgroup(u);
        if (r < 0) {
                log_unit_warning_errno(UNIT(s), r, "Failed to add PIDs to scope's control group: %m");
                scope_enter_dead(s, SCOPE_FAILURE_RESOURCES);
                return r;
        }

        s->result = SCOPE_SUCCESS;

        scope_set_state(s, SCOPE_RUNNING);
        return 1;
}