mount: only add those mount points to localfs.target as Wants that are marked for us

[elogind.git] / unit.h

diff --git a/unit.h b/unit.h
index bfd0907fc306da41de2bb23f26b63f60d23649e2..052cee01eab93b37473704152a95f8b6150cd360 100644 (file)
--- a/unit.h
+++ b/unit.h
@@ -47,6 +47,7 @@ typedef enum KillMode {
         KILL_CONTROL_GROUP = 0,
         KILL_PROCESS_GROUP,
         KILL_PROCESS,
+        KILL_NONE,
         _KILL_MODE_MAX,
         _KILL_MODE_INVALID = -1
 } KillMode;
@@ -196,8 +197,31 @@ union Unit {
 struct UnitVTable {
         const char *suffix;
 
-        int (*init)(Unit *u, UnitLoadState *new_state);
+        /* Can units of this type have multiple names? */
+        bool no_alias:1;
+
+        /* If true units of this types can never have "Requires"
+         * dependencies, because state changes can only be observed,
+         * not triggered */
+        bool refuse_requires: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() */
+        void (*init)(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);
 
         void (*dump)(Unit *u, FILE *f, const char *prefix);
@@ -212,6 +236,12 @@ struct UnitVTable {
          * a simpler one that the engine can understand */
         UnitActiveState (*active_state)(Unit *u);
 
+        /* Returns the substate specific to this unit type as
+         * string. This is purely information so that we can give the
+         * user a more finegrained explanation in which actual state a
+         * unit is in. */
+        const char* (*sub_state_to_string)(Unit *u);
+
         void (*fd_event)(Unit *u, int fd, uint32_t events, Watch *w);
         void (*sigchld_event)(Unit *u, pid_t pid, int code, int status);
         void (*timer_event)(Unit *u, uint64_t n_elapsed, Watch *w);
@@ -285,8 +315,8 @@ int unit_merge_by_name(Unit *u, const char *other);
 
 Unit *unit_follow_merge(Unit *u);
 
-int unit_load_fragment_and_dropin(Unit *u, UnitLoadState *new_state);
-int unit_load_fragment_and_dropin_optional(Unit *u, UnitLoadState *new_state);
+int unit_load_fragment_and_dropin(Unit *u);
+int unit_load_fragment_and_dropin_optional(Unit *u);
 int unit_load(Unit *unit);
 
 const char* unit_id(Unit *u);
@@ -296,6 +326,8 @@ bool unit_has_name(Unit *u, const char *name);
 
 UnitActiveState unit_active_state(Unit *u);
 
+const char* unit_sub_state_to_string(Unit *u);
+
 void unit_dump(Unit *u, FILE *f, const char *prefix);
 
 bool unit_can_reload(Unit *u);