X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=unit.h;h=9def661ce1f07fcb9120dc9a3d46f83ec80cabd5;hp=7803f3183cc9f7332f8d4f0ef4d140b18ec351a1;hb=bbd671356647d9d2c7d6c2c0401e907e169c7576;hpb=87f0e418cf2c58b3201d06a60e3696ec672d2662

diff --git a/unit.h b/unit.h
index 7803f3183..9def661ce 100644
--- a/unit.h
+++ b/unit.h
@@ -3,6 +3,25 @@
 #ifndef foounithfoo
 #define foounithfoo
 
+/***
+  This file is part of systemd.
+
+  Copyright 2010 Lennart Poettering
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU General Public License as published by
+  the Free Software Foundation; either version 2 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  General Public License for more details.
+
+  You should have received a copy of the GNU General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
 #include <stdbool.h>
 #include <stdlib.h>
 
@@ -14,19 +33,24 @@ typedef enum UnitLoadState UnitLoadState;
 typedef enum UnitActiveState UnitActiveState;
 typedef enum UnitDependency UnitDependency;
 
-#include "job.h"
-#include "manager.h"
 #include "set.h"
 #include "util.h"
 #include "list.h"
 #include "socket-util.h"
 #include "execute.h"
-#include "util.h"
 
-#define UNIT_NAME_MAX 32
+#define UNIT_NAME_MAX 128
 #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,
@@ -37,14 +61,16 @@ 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_LOAD_STATE_MAX
+        UNIT_MERGED,
+        _UNIT_LOAD_STATE_MAX,
+        _UNIT_LOAD_STATE_INVALID = -1
 };
 
 enum UnitActiveState {
@@ -53,7 +79,8 @@ enum UnitActiveState {
         UNIT_INACTIVE,
         UNIT_ACTIVATING,
         UNIT_DEACTIVATING,
-        _UNIT_ACTIVE_STATE_MAX
+        _UNIT_ACTIVE_STATE_MAX,
+        _UNIT_ACTIVE_STATE_INVALID = -1
 };
 
 static inline bool UNIT_IS_ACTIVE_OR_RELOADING(UnitActiveState t) {
@@ -92,10 +119,16 @@ enum UnitDependency {
         _UNIT_DEPENDENCY_INVALID = -1
 };
 
+#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 */
 
@@ -103,18 +136,40 @@ struct Meta {
         Set *dependencies[_UNIT_DEPENDENCY_MAX];
 
         char *description;
+        char *fragment_path; /* if loaded from a config file this is the primary path to it */
 
         /* If there is something to do with this unit, then this is
          * the job for it */
         Job *job;
 
         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 */
+        bool recursive_stop;
+
+        /* Garbage collect us we nobody wants or requires us anymore */
+        bool stop_when_unneeded;
 
         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);
+
+        /* Per type list */
+        LIST_FIELDS(Meta, units_per_type);
+
+        /* D-Bus queue */
+        LIST_FIELDS(Meta, dbus_queue);
+
+        /* Cleanup queue */
+        LIST_FIELDS(Meta, cleanup_queue);
 };
 
 #include "service.h"
@@ -141,8 +196,9 @@ union Unit {
 struct UnitVTable {
         const char *suffix;
 
-        int (*init)(Unit *u);
+        int (*init)(Unit *u, UnitLoadState *new_state);
         void (*done)(Unit *u);
+        int (*coldplug)(Unit *u);
 
         void (*dump)(Unit *u, FILE *f, const char *prefix);
 
@@ -156,11 +212,21 @@ struct UnitVTable {
          * a simpler one that the engine can understand */
         UnitActiveState (*active_state)(Unit *u);
 
-        void (*fd_event)(Unit *u, int fd, uint32_t events);
+        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, int id, uint64_t n_elapsed);
+        void (*timer_event)(Unit *u, uint64_t n_elapsed, Watch *w);
+
+        void (*cgroup_notify_empty)(Unit *u);
 
-        void (*retry)(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
+         * inactive state. It is the job of the coldplug() call above
+         * to put the units into the initial state.  */
+        int (*enumerate)(Manager *m);
+
+        /* Type specific cleanups. */
+        void (*shutdown)(Manager *m);
 };
 
 extern const UnitVTable * const unit_vtable[_UNIT_TYPE_MAX];
@@ -197,17 +263,37 @@ 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);
 
-int unit_load_fragment_and_dropin(Unit *u);
+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(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);
@@ -221,15 +307,36 @@ int unit_reload(Unit *u);
 
 void unit_notify(Unit *u, UnitActiveState os, UnitActiveState ns);
 
-int unit_watch_fd(Unit *u, int fd, uint32_t events);
-void unit_unwatch_fd(Unit *u, int fd);
+int unit_watch_fd(Unit *u, int fd, uint32_t events, Watch *w);
+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, int *id);
-void unit_unwatch_timer(Unit *u, int *id);
+int unit_watch_timer(Unit *u, usec_t delay, Watch *w);
+void unit_unwatch_timer(Unit *u, Watch *w);
 
 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);
+
+const char *unit_type_to_string(UnitType i);
+UnitType unit_type_from_string(const char *s);
+
+const char *unit_load_state_to_string(UnitLoadState i);
+UnitLoadState unit_load_state_from_string(const char *s);
+
+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);
+
+const char *kill_mode_to_string(KillMode k);
+KillMode kill_mode_from_string(const char *s);
+
 #endif