X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?a=blobdiff_plain;f=unit.h;h=052cee01eab93b37473704152a95f8b6150cd360;hb=10a94420172b33a7472a16b2e829689dbc570cad;hp=942de5f36f484950a150d5fb57aa16a3dbeb64ee;hpb=f278026d21e2ded46f7f91152d60842525e74956;p=elogind.git

diff --git a/unit.h b/unit.h
index 942de5f36..052cee01e 100644
--- a/unit.h
+++ b/unit.h
@@ -43,6 +43,15 @@ typedef enum UnitDependency UnitDependency;
 #define DEFAULT_TIMEOUT_USEC (20*USEC_PER_SEC)
 #define DEFAULT_RESTART_USEC (100*USEC_PER_MSEC)
 
+typedef enum KillMode {
+        KILL_CONTROL_GROUP = 0,
+        KILL_PROCESS_GROUP,
+        KILL_PROCESS,
+        KILL_NONE,
+        _KILL_MODE_MAX,
+        _KILL_MODE_INVALID = -1
+} KillMode;
+
 enum UnitType {
         UNIT_SERVICE = 0,
         UNIT_TIMER,
@@ -53,7 +62,7 @@ enum UnitType {
         UNIT_AUTOMOUNT,
         UNIT_SNAPSHOT,
         _UNIT_TYPE_MAX,
-        _UNIT_TYPE_INVALID = -1,
+        _UNIT_TYPE_INVALID = -1
 };
 
 enum UnitLoadState {
@@ -188,8 +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);
@@ -204,6 +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);
@@ -277,8 +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);
@@ -288,6 +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);
@@ -314,6 +354,10 @@ int set_unit_path(const char *p);
 
 char *unit_name_escape_path(const char *path, const char *suffix);
 
+char *unit_dbus_path(Unit *u);
+
+int unit_load_related_unit(Unit *u, const char *type, Unit **_found);
+
 const char *unit_type_to_string(UnitType i);
 UnitType unit_type_from_string(const char *s);
 
@@ -326,6 +370,7 @@ UnitActiveState unit_active_state_from_string(const char *s);
 const char *unit_dependency_to_string(UnitDependency i);
 UnitDependency unit_dependency_from_string(const char *s);
 
-char *unit_dbus_path(Unit *u);
+const char *kill_mode_to_string(KillMode k);
+KillMode kill_mode_from_string(const char *s);
 
 #endif