X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fcore%2Fmanager.h;h=14cdf81512878c6cdafdbd3040796ef58d7a8c70;hp=d21f27dfd469b04fd3f9082641a08b044d2852a5;hb=bd8f585b9996667db89764ece1cacf37672e3223;hpb=6084e22e57afd588ad205697c0af119d93db1e39 diff --git a/src/core/manager.h b/src/core/manager.h index d21f27dfd..14cdf8151 100644 --- a/src/core/manager.h +++ b/src/core/manager.h @@ -24,19 +24,29 @@ #include #include #include -#include +#include "sd-bus.h" +#include "sd-event.h" #include "fdset.h" +#include "cgroup-util.h" /* Enforce upper limit how many names we allow */ #define MANAGER_MAX_NAMES 131072 /* 128K */ typedef struct Manager Manager; -typedef enum WatchType WatchType; -typedef struct Watch Watch; -typedef enum ManagerExitCode { +typedef enum ManagerState { + MANAGER_STARTING, MANAGER_RUNNING, + MANAGER_DEGRADED, + MANAGER_MAINTENANCE, + MANAGER_STOPPING, + _MANAGER_STATE_MAX, + _MANAGER_STATE_INVALID = -1 +} ManagerState; + +typedef enum ManagerExitCode { + MANAGER_OK, MANAGER_EXIT, MANAGER_RELOAD, MANAGER_REEXECUTE, @@ -49,41 +59,16 @@ typedef enum ManagerExitCode { _MANAGER_EXIT_CODE_INVALID = -1 } ManagerExitCode; -enum WatchType { - WATCH_INVALID, - WATCH_SIGNAL, - WATCH_NOTIFY, - WATCH_FD, - WATCH_UNIT_TIMER, - WATCH_JOB_TIMER, - WATCH_MOUNT, - WATCH_SWAP, - WATCH_UDEV, - WATCH_DBUS_WATCH, - WATCH_DBUS_TIMEOUT, - WATCH_TIME_CHANGE -}; - -struct Watch { - int fd; - WatchType type; - union { - struct Unit *unit; - struct Job *job; - DBusWatch *bus_watch; - DBusTimeout *bus_timeout; - } data; - bool fd_is_dupped:1; - bool socket_accept:1; -}; - #include "unit.h" #include "job.h" #include "hashmap.h" #include "list.h" #include "set.h" -#include "dbus.h" #include "path-lookup.h" +#include "execute.h" +#include "unit-name.h" +#include "exit-status.h" +#include "show-status.h" struct Manager { /* Note that the set of units we know of is allowed to be @@ -98,9 +83,6 @@ struct Manager { * type we maintain a per type linked list */ LIST_HEAD(Unit, units_by_type[_UNIT_TYPE_MAX]); - /* To optimize iteration of units that have requires_mounts_for set */ - LIST_HEAD(Unit, has_requires_mounts_for); - /* Units that need to be loaded */ LIST_HEAD(Unit, load_queue); /* this is actually more a stack than a queue, but uh. */ @@ -120,15 +102,36 @@ struct Manager { /* Units to check when doing GC */ LIST_HEAD(Unit, gc_queue); - Hashmap *watch_pids; /* pid => Unit object n:1 */ + /* Units that should be realized */ + LIST_HEAD(Unit, cgroup_queue); + + sd_event *event; + + /* We use two hash tables here, since the same PID might be + * watched by two different units: once the unit that forked + * it off, and possibly a different unit to which it was + * joined as cgroup member. Since we know that it is either + * one or two units for each PID we just use to hashmaps + * here. */ + Hashmap *watch_pids1; /* pid => Unit object n:1 */ + Hashmap *watch_pids2; /* pid => Unit object n:1 */ + + /* A set which contains all currently failed units */ + Set *failed_units; + + sd_event_source *run_queue_event_source; char *notify_socket; + int notify_fd; + sd_event_source *notify_event_source; - Watch notify_watch; - Watch signal_watch; - Watch time_change_watch; + int signal_fd; + sd_event_source *signal_event_source; - int epoll_fd; + int time_change_fd; + sd_event_source *time_change_event_source; + + sd_event_source *jobs_in_progress_event_source; unsigned n_snapshots; @@ -136,7 +139,6 @@ struct Manager { Set *unit_path_cache; char **environment; - char **default_controllers; usec_t runtime_watchdog; usec_t shutdown_watchdog; @@ -147,42 +149,55 @@ struct Manager { dual_timestamp initrd_timestamp; dual_timestamp userspace_timestamp; dual_timestamp finish_timestamp; + dual_timestamp security_start_timestamp; + dual_timestamp security_finish_timestamp; + dual_timestamp generators_start_timestamp; + dual_timestamp generators_finish_timestamp; + dual_timestamp units_load_start_timestamp; + dual_timestamp units_load_finish_timestamp; char *generator_unit_path; char *generator_unit_path_early; char *generator_unit_path_late; - /* Data specific to the device subsystem */ struct udev* udev; + + /* Data specific to the device subsystem */ struct udev_monitor* udev_monitor; - Watch udev_watch; + sd_event_source *udev_event_source; Hashmap *devices_by_sysfs; /* Data specific to the mount subsystem */ FILE *proc_self_mountinfo; - Watch mount_watch; + sd_event_source *mount_event_source; /* Data specific to the swap filesystem */ FILE *proc_swaps; - Hashmap *swaps_by_proc_swaps; - bool request_reload; - Watch swap_watch; + sd_event_source *swap_event_source; + Hashmap *swaps_by_devnode; /* Data specific to the D-Bus subsystem */ - DBusConnection *api_bus, *system_bus; - DBusServer *private_bus; - Set *bus_connections, *bus_connections_for_dispatch; - - DBusMessage *queued_message; /* This is used during reloading: + sd_bus *api_bus, *system_bus; + Set *private_buses; + int private_listen_fd; + sd_event_source *private_listen_event_source; + + /* Contains all the clients that are subscribed to signals via + the API bus. Note that private bus connections are always + considered subscribes, since they last for very short only, + and it is much simpler that way. */ + sd_bus_track *subscribed; + char **deserialized_subscribed; + + sd_bus_message *queued_message; /* This is used during reloading: * before the reload we queue the * reply message here, and * afterwards we send it */ - DBusConnection *queued_message_connection; /* The connection to send the queued message on */ + sd_bus *queued_message_bus; /* The connection to send the queued message on */ Hashmap *watch_bus; /* D-Bus names => Unit object n:1 */ - int32_t name_data_slot; - int32_t conn_data_slot; - int32_t subscribed_data_slot; + + bool send_reloading_done; uint32_t current_job_id; uint32_t default_unit_job_id; @@ -191,10 +206,10 @@ struct Manager { int dev_autofs_fd; /* Data specific to the cgroup subsystem */ - Hashmap *cgroup_bondings; /* path string => CGroupBonding object 1:n */ - char *cgroup_hierarchy; + Hashmap *cgroup_unit; + CGroupControllerMask cgroup_supported; + char *cgroup_root; - usec_t gc_queue_timestamp; int gc_marker; unsigned n_in_gc_queue; @@ -207,17 +222,28 @@ struct Manager { ManagerExitCode exit_code:5; bool dispatching_load_queue:1; - bool dispatching_run_queue:1; bool dispatching_dbus_queue:1; bool taint_usr:1; - bool show_status; + ShowStatus show_status; bool confirm_spawn; + bool no_console_output; ExecOutput default_std_output, default_std_error; - struct rlimit *rlimit[RLIMIT_NLIMITS]; + usec_t default_restart_usec, default_timeout_start_usec, default_timeout_stop_usec; + + usec_t default_start_limit_interval; + unsigned default_start_limit_burst; + + bool default_cpu_accounting; + bool default_memory_accounting; + bool default_blockio_accounting; + + usec_t default_timer_accuracy_usec; + + struct rlimit *rlimit[_RLIMIT_MAX]; /* non-zero if we are reloading or reexecuting, */ int n_reloading; @@ -225,33 +251,46 @@ struct Manager { unsigned n_installed_jobs; unsigned n_failed_jobs; + /* Jobs in progress watching */ unsigned n_running_jobs; + unsigned n_on_console; + unsigned jobs_in_progress_iteration; /* Type=idle pipes */ - int idle_pipe[2]; + int idle_pipe[4]; + sd_event_source *idle_pipe_event_source; char *switch_root; char *switch_root_init; + + /* This maps all possible path prefixes to the units needing + * them. It's a hashmap with a path string as key and a Set as + * value where Unit objects are contained. */ + Hashmap *units_requiring_mounts_for; + + /* Reference to the kdbus bus control fd */ + int kdbus_fd; }; int manager_new(SystemdRunningAs running_as, 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); +int manager_get_unit_by_path(Manager *m, const char *path, const char *suffix, Unit **_found); + int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j); -int manager_load_unit_prepare(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret); -int manager_load_unit(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret); -int manager_load_unit_from_dbus_path(Manager *m, const char *s, DBusError *e, Unit **_u); +int manager_load_unit_prepare(Manager *m, const char *name, const char *path, sd_bus_error *e, Unit **_ret); +int manager_load_unit(Manager *m, const char *name, const char *path, sd_bus_error *e, Unit **_ret); +int manager_load_unit_from_dbus_path(Manager *m, const char *s, sd_bus_error *e, Unit **_u); -int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool force, DBusError *e, Job **_ret); -int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool force, DBusError *e, Job **_ret); +int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool force, sd_bus_error *e, Job **_ret); +int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool force, sd_bus_error *e, Job **_ret); void manager_dump_units(Manager *s, FILE *f, const char *prefix); void manager_dump_jobs(Manager *s, FILE *f, const char *prefix); @@ -259,31 +298,29 @@ void manager_dump_jobs(Manager *s, FILE *f, const char *prefix); void manager_clear_jobs(Manager *m); unsigned manager_dispatch_load_queue(Manager *m); -unsigned manager_dispatch_run_queue(Manager *m); -unsigned manager_dispatch_dbus_queue(Manager *m); -int manager_set_default_controllers(Manager *m, char **controllers); +int manager_environment_add(Manager *m, char **minus, char **plus); int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit); int manager_loop(Manager *m); 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(Manager *m, FILE **_f); -int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool serialize_jobs); +int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root); int manager_deserialize(Manager *m, FILE *f, FDSet *fds); -int manager_distribute_fds(Manager *m, FDSet *fds); int manager_reload(Manager *m); +bool manager_is_reloading_or_reexecuting(Manager *m) _pure_; + void manager_reset_failed(Manager *m); void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success); void manager_send_unit_plymouth(Manager *m, Unit *u); -bool manager_unit_pending_inactive(Manager *m, const char *name); +bool manager_unit_inactive_or_pending(Manager *m, const char *name); void manager_check_finished(Manager *m); @@ -292,7 +329,15 @@ void manager_undo_generators(Manager *m); void manager_recheck_journal(Manager *m); -void manager_set_show_status(Manager *m, bool b); -void manager_status_printf(Manager *m, const char *status, const char *format, ...); +void manager_set_show_status(Manager *m, ShowStatus mode); +void manager_status_printf(Manager *m, bool ephemeral, const char *status, const char *format, ...) _printf_(4,5); +void manager_flip_auto_status(Manager *m, bool enable); + +Set *manager_get_units_requiring_mounts_for(Manager *m, const char *path); + +const char *manager_get_runtime_prefix(Manager *m); + +ManagerState manager_state(Manager *m); -void watch_init(Watch *w); +const char *manager_state_to_string(ManagerState m) _const_; +ManagerState manager_state_from_string(const char *s) _pure_;