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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 /unit.h
parent0d9068141e07ba29483ebe8bc4aaed6aacde1562 (diff)
reload: implement reload/reexec logic
Diffstat (limited to 'unit.h')
-rw-r--r--unit.h31
1 files changed, 23 insertions, 8 deletions
diff --git a/unit.h b/unit.h
index b3c75ce20a..76aa0eff5f 100644
--- a/unit.h
+++ b/unit.h
@@ -209,24 +209,24 @@ struct UnitVTable {
/* Instances make no sense for this type */
bool no_instances:1;
- /* Execlude this type from snapshots */
+ /* Exclude this type from snapshots */
bool no_snapshots:1;
/* This should reset all type-specific variables. This should
- * not allocate memory, and is either called with 0
- * initialized data, or with data left from done() */
+ * not allocate memory, and is called with zero-initialized
+ * data. It should hence only initialize variables that need
+ * to be set != 0. */
void (*init)(Unit *u);
+ /* This should free all type-specific variables. It should be
+ * idempotent. */
+ void (*done)(Unit *u);
+
/* Actually load data from disk. This may fail, and should set
* load_state to UNIT_LOADED, UNIT_MERGED or leave it at
* UNIT_STUB if no configuration could be found. */
int (*load)(Unit *u);
- /* This should free all type-specific variables. It should be
- * idempotent. There's no need to reset variables that deal
- * with dynamic memory/resources. */
- void (*done)(Unit *u);
-
/* If a a lot of units got created via enumerate(), this is
* where to actually set the state and call unit_notify(). */
int (*coldplug)(Unit *u);
@@ -239,6 +239,13 @@ struct UnitVTable {
bool (*can_reload)(Unit *u);
+ /* Write all data that cannot be restored from other sources
+ * away using unit_serialize_item() */
+ int (*serialize)(Unit *u, FILE *f, FDSet *fds);
+
+ /* Restore one item from the serialization */
+ int (*deserialize_item)(Unit *u, const char *key, const char *data, FDSet *fds);
+
/* Boils down the more complex internal state of this unit to
* a simpler one that the engine can understand */
UnitActiveState (*active_state)(Unit *u);
@@ -333,6 +340,7 @@ Unit *unit_follow_merge(Unit *u);
int unit_load_fragment_and_dropin(Unit *u);
int unit_load_fragment_and_dropin_optional(Unit *u);
+int unit_load_nop(Unit *u);
int unit_load(Unit *unit);
const char *unit_description(Unit *u);
@@ -373,11 +381,18 @@ int set_unit_path(const char *p);
char *unit_dbus_path(Unit *u);
int unit_load_related_unit(Unit *u, const char *type, Unit **_found);
+int unit_get_related_unit(Unit *u, const char *type, Unit **_found);
char *unit_name_printf(Unit *u, const char* text);
char *unit_full_printf(Unit *u, const char *text);
char **unit_full_printf_strv(Unit *u, char **l);
+bool unit_can_serialize(Unit *u);
+int unit_serialize(Unit *u, FILE *f, FDSet *fds);
+void unit_serialize_item_format(Unit *u, FILE *f, const char *key, const char *value, ...) _printf_attr(4,5);
+void unit_serialize_item(Unit *u, FILE *f, const char *key, const char *value);
+int unit_deserialize(Unit *u, FILE *f, FDSet *fds);
+
const char *unit_type_to_string(UnitType i);
UnitType unit_type_from_string(const char *s);