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authorLennart Poettering <lennart@poettering.net>2010-04-21 03:27:44 +0200
committerLennart Poettering <lennart@poettering.net>2010-04-21 03:27:44 +0200
commita16e112358ea8fea381ee106b89e645aed8b0a8c (patch)
treef38b204ec041c25974397a7711a105cbe7509c07 /target.c
parent0d9068141e07ba29483ebe8bc4aaed6aacde1562 (diff)
reload: implement reload/reexec logic
Diffstat (limited to 'target.c')
-rw-r--r--target.c90
1 files changed, 72 insertions, 18 deletions
diff --git a/target.c b/target.c
index 61cbebf654..32c2256e27 100644
--- a/target.c
+++ b/target.c
@@ -33,22 +33,6 @@ static const UnitActiveState state_translation_table[_TARGET_STATE_MAX] = {
[TARGET_ACTIVE] = UNIT_ACTIVE
};
-static const char* const state_string_table[_TARGET_STATE_MAX] = {
- [TARGET_DEAD] = "dead",
- [TARGET_ACTIVE] = "active"
-};
-
-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, state_string_table[t->state]);
-}
-
static void target_set_state(Target *t, TargetState state) {
TargetState old_state;
assert(t);
@@ -57,11 +41,37 @@ static void target_set_state(Target *t, TargetState state) {
t->state = state;
if (state != old_state)
- log_debug("%s changed %s → %s", UNIT(t)->meta.id, state_string_table[old_state], state_string_table[state]);
+ log_debug("%s changed %s → %s",
+ UNIT(t)->meta.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]);
}
+static int target_coldplug(Unit *u) {
+ 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);
@@ -82,6 +92,39 @@ static int target_stop(Unit *u) {
return 0;
}
+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;
+
+ if ((state = target_state_from_string(value)) < 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;
+}
+
static UnitActiveState target_active_state(Unit *u) {
assert(u);
@@ -91,7 +134,7 @@ static UnitActiveState target_active_state(Unit *u) {
static const char *target_sub_state_to_string(Unit *u) {
assert(u);
- return state_string_table[TARGET(u)->state];
+ return target_state_to_string(TARGET(u)->state);
}
int target_get_runlevel(Target *t) {
@@ -123,16 +166,27 @@ int target_get_runlevel(Target *t) {
return 0;
}
+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 = {
.suffix = ".target",
.load = unit_load_fragment_and_dropin,
+ .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,