+++ /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 "unit.h"
-#include "target.h"
-#include "log.h"
-#include "dbus-target.h"
-#include "special.h"
-#include "unit-name.h"
-
-static const UnitActiveState state_translation_table[_TARGET_STATE_MAX] = {
- [TARGET_DEAD] = UNIT_INACTIVE,
- [TARGET_ACTIVE] = UNIT_ACTIVE
-};
-
-static void target_set_state(Target *t, TargetState state) {
- TargetState old_state;
- assert(t);
-
- old_state = t->state;
- t->state = state;
-
- if (state != old_state)
- log_debug("%s changed %s -> %s",
- UNIT(t)->id,
- target_state_to_string(old_state),
- target_state_to_string(state));
-
- unit_notify(UNIT(t), state_translation_table[old_state], state_translation_table[state], true);
-}
-
-static int target_add_default_dependencies(Target *t) {
-
- static const UnitDependency deps[] = {
- UNIT_REQUIRES,
- UNIT_REQUIRES_OVERRIDABLE,
- UNIT_REQUISITE,
- UNIT_REQUISITE_OVERRIDABLE,
- UNIT_WANTS,
- UNIT_BINDS_TO,
- UNIT_PART_OF
- };
-
- Iterator i;
- Unit *other;
- int r;
- unsigned k;
-
- assert(t);
-
- /* Imply ordering for requirement dependencies on target
- * units. Note that when the user created a contradicting
- * ordering manually we won't add anything in here to make
- * sure we don't create a loop. */
-
- for (k = 0; k < ELEMENTSOF(deps); k++)
- SET_FOREACH(other, UNIT(t)->dependencies[deps[k]], i) {
- r = unit_add_default_target_dependency(other, UNIT(t));
- if (r < 0)
- return r;
- }
-
- /* Make sure targets are unloaded on shutdown */
- return unit_add_dependency_by_name(UNIT(t), UNIT_CONFLICTS, SPECIAL_SHUTDOWN_TARGET, NULL, true);
-}
-
-static int target_load(Unit *u) {
- Target *t = TARGET(u);
- int r;
-
- assert(t);
-
- r = unit_load_fragment_and_dropin(u);
- if (r < 0)
- return r;
-
- /* This is a new unit? Then let's add in some extras */
- if (u->load_state == UNIT_LOADED && u->default_dependencies) {
- r = target_add_default_dependencies(t);
- if (r < 0)
- return r;
- }
-
- return 0;
-}
-
-static int target_coldplug(Unit *u, Hashmap *deferred_work) {
- Target *t = TARGET(u);
-
- assert(t);
- assert(t->state == TARGET_DEAD);
-
- if (t->deserialized_state != t->state)
- target_set_state(t, t->deserialized_state);
-
- return 0;
-}
-
-static void target_dump(Unit *u, FILE *f, const char *prefix) {
- Target *t = TARGET(u);
-
- assert(t);
- assert(f);
-
- fprintf(f,
- "%sTarget State: %s\n",
- prefix, target_state_to_string(t->state));
-}
-
-static int target_start(Unit *u) {
- Target *t = TARGET(u);
-
- assert(t);
- assert(t->state == TARGET_DEAD);
-
- target_set_state(t, TARGET_ACTIVE);
- return 1;
-}
-
-static int target_stop(Unit *u) {
- Target *t = TARGET(u);
-
- assert(t);
- assert(t->state == TARGET_ACTIVE);
-
- target_set_state(t, TARGET_DEAD);
- return 1;
-}
-
-static int target_serialize(Unit *u, FILE *f, FDSet *fds) {
- Target *s = TARGET(u);
-
- assert(s);
- assert(f);
- assert(fds);
-
- unit_serialize_item(u, f, "state", target_state_to_string(s->state));
- return 0;
-}
-
-static int target_deserialize_item(Unit *u, const char *key, const char *value, FDSet *fds) {
- Target *s = TARGET(u);
-
- assert(u);
- assert(key);
- assert(value);
- assert(fds);
-
- if (streq(key, "state")) {
- TargetState state;
-
- state = target_state_from_string(value);
- if (state < 0)
- log_debug("Failed to parse state value %s", value);
- else
- s->deserialized_state = state;
-
- } else
- log_debug("Unknown serialization key '%s'", key);
-
- return 0;
-}
-
-_pure_ static UnitActiveState target_active_state(Unit *u) {
- assert(u);
-
- return state_translation_table[TARGET(u)->state];
-}
-
-_pure_ static const char *target_sub_state_to_string(Unit *u) {
- assert(u);
-
- return target_state_to_string(TARGET(u)->state);
-}
-
-static const char* const target_state_table[_TARGET_STATE_MAX] = {
- [TARGET_DEAD] = "dead",
- [TARGET_ACTIVE] = "active"
-};
-
-DEFINE_STRING_TABLE_LOOKUP(target_state, TargetState);
-
-const UnitVTable target_vtable = {
- .object_size = sizeof(Target),
-
- .sections =
- "Unit\0"
- "Target\0"
- "Install\0",
-
- .load = target_load,
- .coldplug = target_coldplug,
-
- .dump = target_dump,
-
- .start = target_start,
- .stop = target_stop,
-
- .serialize = target_serialize,
- .deserialize_item = target_deserialize_item,
-
- .active_state = target_active_state,
- .sub_state_to_string = target_sub_state_to_string,
-
- .bus_interface = "org.freedesktop.systemd1.Target",
- .bus_vtable = bus_target_vtable,
-
- .status_message_formats = {
- .finished_start_job = {
- [JOB_DONE] = "Reached target %s.",
- [JOB_DEPENDENCY] = "Dependency failed for %s.",
- },
- .finished_stop_job = {
- [JOB_DONE] = "Stopped target %s.",
- },
- },
-};
~ianmdlvl / elogind.git / blobdiff