device: only expose devices with SYSTEMD_EXPOSE=1, ignore all others

[elogind.git] / unit.h

diff --git a/unit.h b/unit.h
index 4b732c0f052f2406480c93161a26e5b9867e5ede..338a58b00981c1d79e724fbaa99f6c5a5e677171 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;
@@ -98,21 +99,21 @@ static inline bool UNIT_IS_INACTIVE_OR_DEACTIVATING(UnitActiveState t) {
 enum UnitDependency {
         /* Positive dependencies */
         UNIT_REQUIRES,
-        UNIT_SOFT_REQUIRES,
-        UNIT_WANTS,
+        UNIT_REQUIRES_OVERRIDABLE,
         UNIT_REQUISITE,
-        UNIT_SOFT_REQUISITE,
+        UNIT_REQUISITE_OVERRIDABLE,
+        UNIT_WANTS,
 
         /* Inverse of the above */
-        UNIT_REQUIRED_BY,       /* inverse of 'requires' and 'requisite' is 'required_by' */
-        UNIT_SOFT_REQUIRED_BY,  /* inverse of 'soft_requires' and 'soft_requisite' is 'soft_required_by' */
-        UNIT_WANTED_BY,         /* inverse of 'wants' */
+        UNIT_REQUIRED_BY,             /* inverse of 'requires' and 'requisite' is 'required_by' */
+        UNIT_REQUIRED_BY_OVERRIDABLE, /* inverse of 'soft_requires' and 'soft_requisite' is 'soft_required_by' */
+        UNIT_WANTED_BY,               /* inverse of 'wants' */
 
         /* Negative dependencies */
-        UNIT_CONFLICTS,         /* inverse of 'conflicts' is 'conflicts' */
+        UNIT_CONFLICTS,               /* inverse of 'conflicts' is 'conflicts' */
 
         /* Order */
-        UNIT_BEFORE,            /* inverse of before is after and vice versa */
+        UNIT_BEFORE,                  /* inverse of before is after and vice versa */
         UNIT_AFTER,
 
         _UNIT_DEPENDENCY_MAX,
@@ -131,6 +132,7 @@ struct Meta {
         Unit *merged_into;
 
         char *id; /* One name is special because we use it for identification. Points to an entry in the names set */
+        char *instance;
 
         Set *names;
         Set *dependencies[_UNIT_DEPENDENCY_MAX];
@@ -202,7 +204,10 @@ struct UnitVTable {
         /* If true units of this types can never have "Requires"
          * dependencies, because state changes can only be observed,
          * not triggered */
-        bool refuse_requires:1;
+        bool no_requires:1;
+
+        /* Instances make no sense for this type */
+        bool no_instances:1;
 
         /* This should reset all type-specific variables. This should
          * not allocate memory, and is either called with 0
@@ -235,12 +240,27 @@ 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);
 
+        /* Called whenever any of the cgroups this unit watches for
+         * ran empty */
         void (*cgroup_notify_empty)(Unit *u);
 
+        /* Called whenever a name thus Unit registered for comes or
+         * goes away. */
+        void (*bus_name_owner_change)(Unit *u, const char *name, const char *old_owner, const char *new_owner);
+
+        /* Called whenever a bus PID lookup finishes */
+        void (*bus_query_pid_done)(Unit *u, const char *name, pid_t pid);
+
         /* This is called for each unit type and should be used to
          * enumerate existing devices and load them. However,
          * everything that is loaded here should still stay in
@@ -277,17 +297,14 @@ DEFINE_CAST(MOUNT, Mount);
 DEFINE_CAST(AUTOMOUNT, Automount);
 DEFINE_CAST(SNAPSHOT, Snapshot);
 
-UnitType unit_name_to_type(const char *n);
-bool unit_name_is_valid(const char *n);
-char *unit_name_change_suffix(const char *n, const char *suffix);
-
 Unit *unit_new(Manager *m);
 void unit_free(Unit *u);
 
 int unit_add_name(Unit *u, const char *name);
+
 int unit_add_dependency(Unit *u, UnitDependency d, Unit *other);
-int unit_add_dependency_by_name(Unit *u, UnitDependency d, const char *name);
-int unit_add_dependency_by_name_inverse(Unit *u, UnitDependency d, const char *name);
+int unit_add_dependency_by_name(Unit *u, UnitDependency d, const char *name, const char *filename);
+int unit_add_dependency_by_name_inverse(Unit *u, UnitDependency d, const char *name, const char *filename);
 
 int unit_add_exec_dependencies(Unit *u, ExecContext *c);
 
@@ -312,13 +329,14 @@ 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);
 const char *unit_description(Unit *u);
 
 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);
@@ -339,16 +357,21 @@ void unit_unwatch_pid(Unit *u, pid_t pid);
 int unit_watch_timer(Unit *u, usec_t delay, Watch *w);
 void unit_unwatch_timer(Unit *u, Watch *w);
 
+int unit_watch_bus_name(Unit *u, const char *name);
+void unit_unwatch_bus_name(Unit *u, const char *name);
+
 bool unit_job_is_applicable(Unit *u, JobType j);
 
 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);
 
+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);
+
 const char *unit_type_to_string(UnitType i);
 UnitType unit_type_from_string(const char *s);