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authorKay Sievers <kay@vrfy.org>2012-04-11 12:59:52 +0200
committerKay Sievers <kay@vrfy.org>2012-04-11 16:03:51 +0200
commitb30e2f4c18ad81b04e4314fd191a5d458553773c (patch)
treede15b901a08d681a7a1e95c7a2d692b0ec181708 /src/core/manager.h
parent9543ad166338a7bef8718070f11465df4b9badd7 (diff)
move libsystemd_core.la sources into core/
Diffstat (limited to 'src/core/manager.h')
-rw-r--r--src/core/manager.h304
1 files changed, 304 insertions, 0 deletions
diff --git a/src/core/manager.h b/src/core/manager.h
new file mode 100644
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--- /dev/null
+++ b/src/core/manager.h
@@ -0,0 +1,304 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+#ifndef foomanagerhfoo
+#define foomanagerhfoo
+
+/***
+ 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 <inttypes.h>
+#include <stdio.h>
+#include <dbus/dbus.h>
+
+#include "fdset.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 {
+ MANAGER_RUNNING,
+ MANAGER_EXIT,
+ MANAGER_RELOAD,
+ MANAGER_REEXECUTE,
+ MANAGER_REBOOT,
+ MANAGER_POWEROFF,
+ MANAGER_HALT,
+ MANAGER_KEXEC,
+ _MANAGER_EXIT_CODE_MAX,
+ _MANAGER_EXIT_CODE_INVALID = -1
+} ManagerExitCode;
+
+typedef enum ManagerRunningAs {
+ MANAGER_SYSTEM,
+ MANAGER_USER,
+ _MANAGER_RUNNING_AS_MAX,
+ _MANAGER_RUNNING_AS_INVALID = -1
+} ManagerRunningAs;
+
+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
+};
+
+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"
+
+struct Manager {
+ /* Note that the set of units we know of is allowed to be
+ * inconsistent. However the subset of it that is loaded may
+ * not, and the list of jobs may neither. */
+
+ /* Active jobs and units */
+ Hashmap *units; /* name string => Unit object n:1 */
+ Hashmap *jobs; /* job id => Job object 1:1 */
+
+ /* To make it easy to iterate through the units of a specific
+ * type we maintain a per type linked list */
+ LIST_HEAD(Unit, units_by_type[_UNIT_TYPE_MAX]);
+
+ /* Units that need to be loaded */
+ LIST_HEAD(Unit, load_queue); /* this is actually more a stack than a queue, but uh. */
+
+ /* Jobs that need to be run */
+ LIST_HEAD(Job, run_queue); /* more a stack than a queue, too */
+
+ /* Units and jobs that have not yet been announced via
+ * D-Bus. When something about a job changes it is added here
+ * if it is not in there yet. This allows easy coalescing of
+ * D-Bus change signals. */
+ LIST_HEAD(Unit, dbus_unit_queue);
+ LIST_HEAD(Job, dbus_job_queue);
+
+ /* Units to remove */
+ LIST_HEAD(Unit, cleanup_queue);
+
+ /* Units to check when doing GC */
+ LIST_HEAD(Unit, gc_queue);
+
+ /* Jobs to be added */
+ Hashmap *transaction_jobs; /* Unit object => Job object list 1:1 */
+ JobDependency *transaction_anchor;
+
+ Hashmap *watch_pids; /* pid => Unit object n:1 */
+
+ char *notify_socket;
+
+ Watch notify_watch;
+ Watch signal_watch;
+
+ int epoll_fd;
+
+ unsigned n_snapshots;
+
+ LookupPaths lookup_paths;
+ Set *unit_path_cache;
+
+ char **environment;
+ char **default_controllers;
+
+ usec_t runtime_watchdog;
+ usec_t shutdown_watchdog;
+
+ dual_timestamp initrd_timestamp;
+ dual_timestamp startup_timestamp;
+ dual_timestamp finish_timestamp;
+
+ char *generator_unit_path;
+
+ /* Data specific to the device subsystem */
+ struct udev* udev;
+ struct udev_monitor* udev_monitor;
+ Watch udev_watch;
+ Hashmap *devices_by_sysfs;
+
+ /* Data specific to the mount subsystem */
+ FILE *proc_self_mountinfo;
+ Watch mount_watch;
+
+ /* Data specific to the swap filesystem */
+ FILE *proc_swaps;
+ Hashmap *swaps_by_proc_swaps;
+ bool request_reload;
+ Watch swap_watch;
+
+ /* 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:
+ * 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 */
+
+ 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;
+
+ uint32_t current_job_id;
+ uint32_t default_unit_job_id;
+
+ /* 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_hierarchy;
+
+ usec_t gc_queue_timestamp;
+ int gc_marker;
+ unsigned n_in_gc_queue;
+
+ /* Make sure the user cannot accidentally unmount our cgroup
+ * file system */
+ int pin_cgroupfs_fd;
+
+ /* Audit fd */
+#ifdef HAVE_AUDIT
+ int audit_fd;
+#endif
+
+ /* Flags */
+ ManagerRunningAs running_as;
+ 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;
+ bool confirm_spawn;
+#ifdef HAVE_SYSV_COMPAT
+ bool sysv_console;
+#endif
+ bool mount_auto;
+ bool swap_auto;
+
+ ExecOutput default_std_output, default_std_error;
+
+ /* non-zero if we are reloading or reexecuting, */
+ int n_reloading;
+
+ unsigned n_installed_jobs;
+ unsigned n_failed_jobs;
+};
+
+int manager_new(ManagerRunningAs 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_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_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_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);
+
+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, bool delete_dependencies);
+
+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_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);
+int manager_deserialize(Manager *m, FILE *f, FDSet *fds);
+
+int manager_reload(Manager *m);
+
+bool manager_is_booting_or_shutting_down(Manager *m);
+
+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);
+
+void manager_check_finished(Manager *m);
+
+void manager_run_generators(Manager *m);
+void manager_undo_generators(Manager *m);
+
+void manager_recheck_journal(Manager *m);
+
+void manager_set_show_status(Manager *m, bool b);
+bool manager_get_show_status(Manager *m);
+
+const char *manager_running_as_to_string(ManagerRunningAs i);
+ManagerRunningAs manager_running_as_from_string(const char *s);
+
+#endif