X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=unit.h;h=4b732c0f052f2406480c93161a26e5b9867e5ede;hp=f5eac2916d712aadf4613d7173abae71239f9180;hb=18149b9f57f8971ebc7d6401fc0a08a3173bcb29;hpb=2e478a46c3754ede1a7af57b961056a2a375a799

diff --git a/unit.h b/unit.h
index f5eac2916..4b732c0f0 100644
--- a/unit.h
+++ b/unit.h
@@ -43,6 +43,14 @@ 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_MODE_MAX,
+        _KILL_MODE_INVALID = -1
+} KillMode;
+
 enum UnitType {
         UNIT_SERVICE = 0,
         UNIT_TIMER,
@@ -53,13 +61,14 @@ enum UnitType {
         UNIT_AUTOMOUNT,
         UNIT_SNAPSHOT,
         _UNIT_TYPE_MAX,
-        _UNIT_TYPE_INVALID = -1,
+        _UNIT_TYPE_INVALID = -1
 };
 
 enum UnitLoadState {
         UNIT_STUB,
         UNIT_LOADED,
         UNIT_FAILED,
+        UNIT_MERGED,
         _UNIT_LOAD_STATE_MAX,
         _UNIT_LOAD_STATE_INVALID = -1
 };
@@ -112,11 +121,14 @@ enum UnitDependency {
 
 #include "manager.h"
 #include "job.h"
+#include "cgroup.h"
 
 struct Meta {
         Manager *manager;
+
         UnitType type;
         UnitLoadState load_state;
+        Unit *merged_into;
 
         char *id; /* One name is special because we use it for identification. Points to an entry in the names set */
 
@@ -132,6 +144,7 @@ struct Meta {
 
         bool in_load_queue:1;
         bool in_dbus_queue:1;
+        bool in_cleanup_queue:1;
         bool sent_dbus_new_signal:1;
 
         /* If we go down, pull down everything that depends on us, too */
@@ -143,6 +156,9 @@ struct Meta {
         usec_t active_enter_timestamp;
         usec_t active_exit_timestamp;
 
+        /* Counterparts in the cgroup filesystem */
+        CGroupBonding *cgroup_bondings;
+
         /* Load queue */
         LIST_FIELDS(Meta, load_queue);
 
@@ -151,6 +167,9 @@ struct Meta {
 
         /* D-Bus queue */
         LIST_FIELDS(Meta, dbus_queue);
+
+        /* Cleanup queue */
+        LIST_FIELDS(Meta, cleanup_queue);
 };
 
 #include "service.h"
@@ -177,8 +196,31 @@ union Unit {
 struct UnitVTable {
         const char *suffix;
 
-        int (*init)(Unit *u);
+        /* 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);
@@ -197,6 +239,8 @@ struct UnitVTable {
         void (*sigchld_event)(Unit *u, pid_t pid, int code, int status);
         void (*timer_event)(Unit *u, uint64_t n_elapsed, Watch *w);
 
+        void (*cgroup_notify_empty)(Unit *u);
+
         /* 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
@@ -243,21 +287,36 @@ 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_exec_dependencies(Unit *u, ExecContext *c);
+
+int unit_add_cgroup(Unit *u, CGroupBonding *b);
+int unit_add_cgroup_from_text(Unit *u, const char *name);
+int unit_add_default_cgroup(Unit *u);
+CGroupBonding* unit_get_default_cgroup(Unit *u);
 
 int unit_choose_id(Unit *u, const char *name);
 int unit_set_description(Unit *u, const char *description);
 
 void unit_add_to_load_queue(Unit *u);
 void unit_add_to_dbus_queue(Unit *u);
+void unit_add_to_cleanup_queue(Unit *u);
 
 int unit_merge(Unit *u, Unit *other);
+int unit_merge_by_name(Unit *u, const char *other);
+
+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(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);
 
 void unit_dump(Unit *u, FILE *f, const char *prefix);
@@ -286,6 +345,10 @@ 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);
 
@@ -298,6 +361,7 @@ 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