chiark / gitweb /
reorder large structs a little, based on pahole info
[elogind.git] / manager.h
index b92680d96c619e5ccd1ad1fb6cbad6293c30442e..356e168bf65c541a36dd16acbd0231ca01b6aa8d 100644 (file)
--- a/manager.h
+++ b/manager.h
 #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 */
+        MANAGER_SESSION,   /* non-root, for a session */
+        _MANAGER_RUNNING_AS_MAX,
+        _MANAGER_RUNNING_AS_INVALID = -1
+} ManagerRunningAs;
+
 enum WatchType {
         WATCH_INVALID,
         WATCH_SIGNAL,
@@ -46,12 +64,13 @@ enum WatchType {
 struct Watch {
         int fd;
         WatchType type;
-        bool fd_is_dupped;
         union {
                 union Unit *unit;
                 DBusWatch *bus_watch;
                 DBusTimeout *bus_timeout;
+                bool socket_accept;
         } data;
+        bool fd_is_dupped;
 };
 
 #include "unit.h"
@@ -62,12 +81,42 @@ struct Watch {
 #include "dbus.h"
 
 #define SPECIAL_DEFAULT_TARGET "default.target"
-#define SPECIAL_SYSLOG_SERVICE "syslog.service"
-#define SPECIAL_DBUS_SERVICE "messagebus.service"
+
 #define SPECIAL_LOGGER_SOCKET "systemd-logger.socket"
+
 #define SPECIAL_KBREQUEST_TARGET "kbrequest.target"
+#define SPECIAL_SIGPWR_TARGET "sigpwr.target"
 #define SPECIAL_CTRL_ALT_DEL_TARGET "ctrl-alt-del.target"
 
+#define SPECIAL_LOCAL_FS_TARGET "local-fs.target"
+#define SPECIAL_REMOTE_FS_TARGET "remote-fs.target"
+#define SPECIAL_NETWORK_TARGET "network.target"
+#define SPECIAL_NSS_LOOKUP_TARGET "nss-lookup.target"     /* LSB's $named */
+#define SPECIAL_RPCBIND_TARGET "rpcbind.target"           /* LSB's $portmap */
+#define SPECIAL_SYSLOG_TARGET "syslog.target"             /* Should pull in syslog.socket or syslog.service */
+#define SPECIAL_RTC_SET_TARGET "rtc-set.target"           /* LSB's $time */
+
+#define SPECIAL_BASIC_TARGET "basic.target"
+#define SPECIAL_RESCUE_TARGET "rescue.target"
+
+#ifndef SPECIAL_DBUS_SERVICE
+#define SPECIAL_DBUS_SERVICE "dbus.service"
+#endif
+
+#ifndef SPECIAL_SYSLOG_SERVICE
+#define SPECIAL_SYSLOG_SERVICE "syslog.service"
+#endif
+
+/* For SysV compatibility. Usually an alias for a saner target. On
+ * SysV-free systems this doesn't exist. */
+#define SPECIAL_RUNLEVEL0_TARGET "runlevel0.target"
+#define SPECIAL_RUNLEVEL1_TARGET "runlevel1.target"
+#define SPECIAL_RUNLEVEL2_TARGET "runlevel2.target"
+#define SPECIAL_RUNLEVEL3_TARGET "runlevel3.target"
+#define SPECIAL_RUNLEVEL4_TARGET "runlevel4.target"
+#define SPECIAL_RUNLEVEL5_TARGET "runlevel5.target"
+#define SPECIAL_RUNLEVEL6_TARGET "runlevel6.target"
+
 struct Manager {
         uint32_t current_job_id;
 
@@ -96,23 +145,25 @@ struct Manager {
         LIST_HEAD(Meta, dbus_unit_queue);
         LIST_HEAD(Job, dbus_job_queue);
 
+        LIST_HEAD(Meta, cleanup_queue);
+
         /* Jobs to be added */
         Hashmap *transaction_jobs;      /* Unit object => Job object list 1:1 */
         JobDependency *transaction_anchor;
 
-        bool dispatching_load_queue:1;
-        bool dispatching_run_queue:1;
-        bool dispatching_dbus_queue:1;
+        Hashmap *watch_pids;  /* pid => Unit object n:1 */
 
-        bool is_init:1;
+        Watch signal_watch;
 
-        bool request_bus_dispatch:1;
+        int epoll_fd;
 
-        Hashmap *watch_pids;  /* pid => Unit object n:1 */
+        unsigned n_snapshots;
 
-        int epoll_fd;
+        char **unit_path;
+        char **sysvinit_path;
+        char **sysvrcnd_path;
 
-        Watch signal_watch;
+        usec_t boot_timestamp;
 
         /* Data specific to the device subsystem */
         struct udev* udev;
@@ -124,14 +175,46 @@ struct Manager {
         Watch mount_watch;
 
         /* Data specific to the D-Bus subsystem */
-        DBusConnection *bus;
+        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 Automount subsystem */
+        int dev_autofs_fd;
+
+        /* Data specific to the cgroup subsystem */
+        Hashmap *cgroup_bondings; /* path string => CGroupBonding object 1:n */
+        char *cgroup_controller;
+        char *cgroup_hierarchy;
+
+        /* Flags */
+        ManagerRunningAs running_as;
+        ManagerExitCode exit_code:4;
+
+        bool dispatching_load_queue:1;
+        bool dispatching_run_queue:1;
+        bool dispatching_dbus_queue:1;
+
+        bool request_api_bus_dispatch:1;
+        bool request_system_bus_dispatch:1;
+
+        bool utmp_reboot_written:1;
+
+        bool confirm_spawn:1;
 };
 
-Manager* manager_new(void);
+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);
@@ -139,13 +222,15 @@ 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);
 
 void manager_dump_units(Manager *s, FILE *f, const char *prefix);
 void manager_dump_jobs(Manager *s, FILE *f, const char *prefix);
 
-void manager_transaction_unlink_job(Manager *m, Job *j);
+void manager_transaction_unlink_job(Manager *m, Job *j, bool delete_dependencies);
 
 void manager_clear_jobs(Manager *m);
 
@@ -155,4 +240,20 @@ unsigned manager_dispatch_dbus_queue(Manager *m);
 
 int manager_loop(Manager *m);
 
+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