reload: implement reload/reexec logic

[elogind.git] / manager.h

diff --git a/manager.h b/manager.h
index b6030a02374c018059c33647172786297958216f..8a48c5519cea30278f7f8cba11bf53340036468b 100644 (file)
--- a/manager.h
+++ b/manager.h
@@ -25,13 +25,23 @@
 #include <stdbool.h>
 #include <inttypes.h>
 #include <stdio.h>
-
 #include <dbus/dbus.h>
 
+#include "fdset.h"
+
 typedef struct Manager Manager;
 typedef enum WatchType WatchType;
 typedef struct Watch Watch;
 
+typedef enum ManagerExitCode {
+        MANAGER_RUNNING,
+        MANAGER_EXIT,
+        MANAGER_RELOAD,
+        MANAGER_REEXECUTE,
+        _MANAGER_EXIT_CODE_MAX,
+        _MANAGER_EXIT_CODE_INVALID = -1
+} ManagerExitCode;
+
 typedef enum ManagerRunningAs {
         MANAGER_INIT,      /* root and pid=1 */
         MANAGER_SYSTEM,    /* root and pid!=1 */
@@ -59,6 +69,7 @@ struct Watch {
                 union Unit *unit;
                 DBusWatch *bus_watch;
                 DBusTimeout *bus_timeout;
+                bool socket_accept;
         } data;
 };
 
@@ -154,6 +165,8 @@ struct Manager {
 
         bool confirm_spawn:1;
 
+        ManagerExitCode exit_code;
+
         Hashmap *watch_pids;  /* pid => Unit object n:1 */
 
         int epoll_fd;
@@ -164,6 +177,8 @@ struct Manager {
         char **sysvinit_path;
         char **sysvrcnd_path;
 
+        usec_t boot_timestamp;
+
         /* Data specific to the device subsystem */
         struct udev* udev;
         struct udev_monitor* udev_monitor;
@@ -176,19 +191,32 @@ struct Manager {
         /* Data specific to the D-Bus subsystem */
         DBusConnection *api_bus, *system_bus;
         Set *subscribed;
+        DBusMessage *queued_message; /* This is used during reloading:
+                                      * before the reload we queue the
+                                      * reply message here, and
+                                      * afterwards we send it */
+
+        Hashmap *watch_bus;  /* D-Bus names => Unit object n:1 */
+        int32_t name_data_slot;
 
         /* Data specific to the cgroup subsystem */
         Hashmap *cgroup_bondings; /* path string => CGroupBonding object 1:n */
         char *cgroup_controller;
         char *cgroup_hierarchy;
 
-        usec_t boot_timestamp;
+        /* Data specific to the Automount subsystem */
+        int dev_autofs_fd;
+
+        /* Data specific to the Snapshot subsystem */
+        unsigned n_snapshots;
 };
 
 int manager_new(ManagerRunningAs running_as, bool confirm_spawn, Manager **m);
 void manager_free(Manager *m);
 
+int manager_enumerate(Manager *m);
 int manager_coldplug(Manager *m);
+int manager_startup(Manager *m, FILE *serialization, FDSet *fds);
 
 Job *manager_get_job(Manager *m, uint32_t id);
 Unit *manager_get_unit(Manager *m, const char *name);
@@ -196,7 +224,7 @@ Unit *manager_get_unit(Manager *m, const char *name);
 int manager_get_unit_from_dbus_path(Manager *m, const char *s, Unit **_u);
 int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j);
 
-int manager_load_unit(Manager *m, const char *path_or_name, Unit **_ret);
+int manager_load_unit(Manager *m, const char *name, const char *path, Unit **_ret);
 
 int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool force, Job **_ret);
 int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool force, Job **_ret);
@@ -214,11 +242,20 @@ unsigned manager_dispatch_dbus_queue(Manager *m);
 
 int manager_loop(Manager *m);
 
-const char *manager_running_as_to_string(ManagerRunningAs i);
-ManagerRunningAs manager_running_as_from_string(const char *s);
-
 void manager_write_utmp_reboot(Manager *m);
-
 void manager_write_utmp_runlevel(Manager *m, Unit *t);
 
+void manager_dispatch_bus_name_owner_changed(Manager *m, const char *name, const char* old_owner, const char *new_owner);
+void manager_dispatch_bus_query_pid_done(Manager *m, const char *name, pid_t pid);
+
+int manager_open_serialization(FILE **_f);
+
+int manager_serialize(Manager *m, FILE *f, FDSet *fds);
+int manager_deserialize(Manager *m, FILE *f, FDSet *fds);
+
+int manager_reload(Manager *m);
+
+const char *manager_running_as_to_string(ManagerRunningAs i);
+ManagerRunningAs manager_running_as_from_string(const char *s);
+
 #endif