unit: optionally allow making cgroup attribute changes persistent

[elogind.git] / src / core / unit.h

diff --git a/src/core/unit.h b/src/core/unit.h
index 89bd61c2d8fae939c03521de8b8e347d8b0c6d94..297b35d8f502bb01766c545416889aee9d892531 100644 (file)
--- a/src/core/unit.h
+++ b/src/core/unit.h
@@ -23,6 +23,7 @@
 
 #include <stdbool.h>
 #include <stdlib.h>
+#include <unistd.h>
 
 typedef struct Unit Unit;
 typedef struct UnitVTable UnitVTable;
@@ -266,6 +267,13 @@ struct UnitVTable {
         /* How much memory does an object of this unit type need */
         size_t object_size;
 
+        /* If greater than 0, the offset into the object where
+         * ExecContext is found, if the unit type has that */
+        size_t exec_context_offset;
+
+        /* The name of the section with the exec settings of ExecContext */
+        const char *exec_section;
+
         /* Config file sections this unit type understands, separated
          * by NUL chars */
         const char *sections;
@@ -285,7 +293,7 @@ struct UnitVTable {
          * UNIT_STUB if no configuration could be found. */
         int (*load)(Unit *u);
 
-        /* If a a lot of units got created via enumerate(), this is
+        /* If a lot of units got created via enumerate(), this is
          * where to actually set the state and call unit_notify(). */
         int (*coldplug)(Unit *u);
 
@@ -306,6 +314,9 @@ struct UnitVTable {
         /* Restore one item from the serialization */
         int (*deserialize_item)(Unit *u, const char *key, const char *data, FDSet *fds);
 
+        /* Try to match up fds with what we need for this unit */
+        int (*distribute_fds)(Unit *u, 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);
@@ -354,6 +365,9 @@ struct UnitVTable {
         /* Return the set of units that are following each other */
         int (*following_set)(Unit *u, Set **s);
 
+        /* Called whenever CLOCK_REALTIME made a jump */
+        void (*time_change)(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
@@ -428,10 +442,10 @@ int unit_add_two_dependencies_by_name_inverse(Unit *u, UnitDependency d, UnitDep
 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_cgroup_from_text(Unit *u, const char *name, bool overwrite, CGroupBonding **ret);
 int unit_add_default_cgroups(Unit *u);
 CGroupBonding* unit_get_default_cgroup(Unit *u);
-int unit_add_cgroup_attribute(Unit *u, const char *controller, const char *name, const char *value, CGroupAttributeMapCallback map_callback);
+int unit_add_cgroup_attribute(Unit *u, const char *controller, const char *name, const char *value, CGroupAttributeMapCallback map_callback, CGroupAttribute **ret);
 
 int unit_choose_id(Unit *u, const char *name);
 int unit_set_description(Unit *u, const char *description);
@@ -480,7 +494,7 @@ void unit_unwatch_fd(Unit *u, Watch *w);
 int unit_watch_pid(Unit *u, pid_t pid);
 void unit_unwatch_pid(Unit *u, pid_t pid);
 
-int unit_watch_timer(Unit *u, usec_t delay, Watch *w);
+int unit_watch_timer(Unit *u, clockid_t, bool relative, usec_t usec, Watch *w);
 void unit_unwatch_timer(Unit *u, Watch *w);
 
 int unit_watch_bus_name(Unit *u, const char *name);
@@ -495,10 +509,6 @@ 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, bool serialize_jobs);
 void unit_serialize_item_format(Unit *u, FILE *f, const char *key, const char *value, ...) _printf_attr_(4,5);
@@ -522,6 +532,8 @@ bool unit_pending_active(Unit *u);
 
 int unit_add_default_target_dependency(Unit *u, Unit *target);
 
+char *unit_default_cgroup_path(Unit *u);
+
 int unit_following_set(Unit *u, Set **s);
 
 void unit_trigger_on_failure(Unit *u);
@@ -540,8 +552,22 @@ int unit_add_mount_links(Unit *u);
 
 int unit_exec_context_defaults(Unit *u, ExecContext *c);
 
+ExecContext *unit_get_exec_context(Unit *u);
+
+int unit_write_drop_in(Unit *u, bool runtime, const char *name, const char *data);
+int unit_remove_drop_in(Unit *u, bool runtime, const char *name);
+
 const char *unit_active_state_to_string(UnitActiveState i);
 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);
+
+#define log_full_unit(level, unit, ...) log_meta_object(level, __FILE__, __LINE__, __func__, getpid() == 1 ? "UNIT=" : "USER_UNIT=", unit, __VA_ARGS__)
+#define log_debug_unit(unit, ...)       log_full_unit(LOG_DEBUG, unit, __VA_ARGS__)
+#define log_info_unit(unit, ...)        log_full_unit(LOG_INFO, unit, __VA_ARGS__)
+#define log_notice_unit(unit, ...)      log_full_unit(LOG_NOTICE, unit, __VA_ARGS__)
+#define log_warning_unit(unit, ...)     log_full_unit(LOG_WARNING, unit, __VA_ARGS__)
+#define log_error_unit(unit, ...)       log_full_unit(LOG_ERR, unit, __VA_ARGS__)
+
+#define log_struct_unit(level, unit, ...) log_struct(level, getpid() == 1 ? "UNIT=%s" : "USER_UNIT=%s", unit, __VA_ARGS__)