1 /* SPDX-License-Identifier: LGPL-2.1+ */
3 #include "dbus-target.h"
7 #include "string-util.h"
12 static const UnitActiveState state_translation_table
[_TARGET_STATE_MAX
] = {
13 [TARGET_DEAD
] = UNIT_INACTIVE
,
14 [TARGET_ACTIVE
] = UNIT_ACTIVE
17 static void target_set_state(Target
*t
, TargetState state
) {
18 TargetState old_state
;
24 if (state
!= old_state
)
25 log_debug("%s changed %s -> %s",
27 target_state_to_string(old_state
),
28 target_state_to_string(state
));
30 unit_notify(UNIT(t
), state_translation_table
[old_state
], state_translation_table
[state
], 0);
33 static int target_add_default_dependencies(Target
*t
) {
35 static const UnitDependency deps
[] = {
48 if (!UNIT(t
)->default_dependencies
)
51 /* Imply ordering for requirement dependencies on target units. Note that when the user created a contradicting
52 * ordering manually we won't add anything in here to make sure we don't create a loop. */
54 for (k
= 0; k
< ELEMENTSOF(deps
); k
++) {
59 HASHMAP_FOREACH_KEY(v
, other
, UNIT(t
)->dependencies
[deps
[k
]], i
) {
60 r
= unit_add_default_target_dependency(other
, UNIT(t
));
66 if (unit_has_name(UNIT(t
), SPECIAL_SHUTDOWN_TARGET
))
69 /* Make sure targets are unloaded on shutdown */
70 return unit_add_two_dependencies_by_name(UNIT(t
), UNIT_BEFORE
, UNIT_CONFLICTS
, SPECIAL_SHUTDOWN_TARGET
, true, UNIT_DEPENDENCY_DEFAULT
);
73 static int target_load(Unit
*u
) {
74 Target
*t
= TARGET(u
);
79 r
= unit_load_fragment_and_dropin(u
);
83 /* This is a new unit? Then let's add in some extras */
84 if (u
->load_state
== UNIT_LOADED
) {
85 r
= target_add_default_dependencies(t
);
93 static int target_coldplug(Unit
*u
) {
94 Target
*t
= TARGET(u
);
97 assert(t
->state
== TARGET_DEAD
);
99 if (t
->deserialized_state
!= t
->state
)
100 target_set_state(t
, t
->deserialized_state
);
105 static void target_dump(Unit
*u
, FILE *f
, const char *prefix
) {
106 Target
*t
= TARGET(u
);
112 "%sTarget State: %s\n",
113 prefix
, target_state_to_string(t
->state
));
116 static int target_start(Unit
*u
) {
117 Target
*t
= TARGET(u
);
121 assert(t
->state
== TARGET_DEAD
);
123 r
= unit_acquire_invocation_id(u
);
127 target_set_state(t
, TARGET_ACTIVE
);
131 static int target_stop(Unit
*u
) {
132 Target
*t
= TARGET(u
);
135 assert(t
->state
== TARGET_ACTIVE
);
137 target_set_state(t
, TARGET_DEAD
);
141 static int target_serialize(Unit
*u
, FILE *f
, FDSet
*fds
) {
142 Target
*s
= TARGET(u
);
148 (void) serialize_item(f
, "state", target_state_to_string(s
->state
));
152 static int target_deserialize_item(Unit
*u
, const char *key
, const char *value
, FDSet
*fds
) {
153 Target
*s
= TARGET(u
);
160 if (streq(key
, "state")) {
163 state
= target_state_from_string(value
);
165 log_debug("Failed to parse state value %s", value
);
167 s
->deserialized_state
= state
;
170 log_debug("Unknown serialization key '%s'", key
);
175 _pure_
static UnitActiveState
target_active_state(Unit
*u
) {
178 return state_translation_table
[TARGET(u
)->state
];
181 _pure_
static const char *target_sub_state_to_string(Unit
*u
) {
184 return target_state_to_string(TARGET(u
)->state
);
187 const UnitVTable target_vtable
= {
188 .object_size
= sizeof(Target
),
196 .coldplug
= target_coldplug
,
200 .start
= target_start
,
203 .serialize
= target_serialize
,
204 .deserialize_item
= target_deserialize_item
,
206 .active_state
= target_active_state
,
207 .sub_state_to_string
= target_sub_state_to_string
,
209 .bus_vtable
= bus_target_vtable
,
211 .status_message_formats
= {
212 .finished_start_job
= {
213 [JOB_DONE
] = "Reached target %s.",
215 .finished_stop_job
= {
216 [JOB_DONE
] = "Stopped target %s.",