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+#pragma once
+
+/***
+ 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 Lesser General Public License as published by
+ the Free Software Foundation; either version 2.1 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
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <libmount.h>
+#include <stdbool.h>
+#include <stdio.h>
+
+#include <systemd/sd-bus.h>
+#include <systemd/sd-event.h>
+
+#include "cgroup-util.h"
+#include "fdset.h"
+#include "hashmap.h"
+#include "list.h"
+#include "ratelimit.h"
+
+/* Enforce upper limit how many names we allow */
+#define MANAGER_MAX_NAMES 131072 /* 128K */
+
+typedef struct Manager Manager;
+
+typedef enum ManagerState {
+ MANAGER_INITIALIZING,
+ 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,
+ MANAGER_REBOOT,
+ MANAGER_POWEROFF,
+ MANAGER_HALT,
+ MANAGER_KEXEC,
+ MANAGER_SWITCH_ROOT,
+ _MANAGER_EXIT_CODE_MAX,
+ _MANAGER_EXIT_CODE_INVALID = -1
+} ManagerExitCode;
+
+typedef enum StatusType {
+ STATUS_TYPE_EPHEMERAL,
+ STATUS_TYPE_NORMAL,
+ STATUS_TYPE_EMERGENCY,
+} StatusType;
+
+#include "execute.h"
+#include "job.h"
+#include "path-lookup.h"
+#include "show-status.h"
+#include "unit-name.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);
+
+ /* 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 contains all units which cgroup should be refreshed after startup */
+ Set *startup_units;
+
+ /* 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;
+
+ int signal_fd;
+ sd_event_source *signal_event_source;
+
+ int time_change_fd;
+ sd_event_source *time_change_event_source;
+
+ sd_event_source *jobs_in_progress_event_source;
+
+ LookupPaths lookup_paths;
+ Set *unit_path_cache;
+
+ char **environment;
+
+ usec_t runtime_watchdog;
+ usec_t shutdown_watchdog;
+
+ dual_timestamp firmware_timestamp;
+ dual_timestamp loader_timestamp;
+ dual_timestamp kernel_timestamp;
+ 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;
+
+ struct udev* udev;
+
+ /* Data specific to the device subsystem */
+ struct udev_monitor* udev_monitor;
+ sd_event_source *udev_event_source;
+ Hashmap *devices_by_sysfs;
+
+ /* Data specific to the mount subsystem */
+ struct libmnt_monitor *mount_monitor;
+ sd_event_source *mount_event_source;
+
+ /* Data specific to the swap filesystem */
+ FILE *proc_swaps;
+ sd_event_source *swap_event_source;
+ Hashmap *swaps_by_devnode;
+
+ /* Data specific to the D-Bus subsystem */
+ 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;
+
+ /* This is used during reloading: before the reload we queue
+ * the reply message here, and afterwards we send it */
+ sd_bus_message *queued_message;
+
+ Hashmap *watch_bus; /* D-Bus names => Unit object n:1 */
+
+ bool send_reloading_done;
+
+ 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_unit;
+ CGroupMask cgroup_supported;
+ char *cgroup_root;
+
+ /* Notifications from cgroups, when the unified hierarchy is
+ * used is done via inotify. */
+ int cgroup_inotify_fd;
+ sd_event_source *cgroup_inotify_event_source;
+ Hashmap *cgroup_inotify_wd_unit;
+
+ /* Make sure the user cannot accidentally unmount our cgroup
+ * file system */
+ int pin_cgroupfs_fd;
+
+ int gc_marker;
+ unsigned n_in_gc_queue;
+
+ /* Flags */
+ ManagerRunningAs running_as;
+ ManagerExitCode exit_code:5;
+
+ bool dispatching_load_queue:1;
+ bool dispatching_dbus_queue:1;
+
+ bool taint_usr:1;
+
+ bool test_run:1;
+
+ /* If non-zero, exit with the following value when the systemd
+ * process terminate. Useful for containers: systemd-nspawn could get
+ * the return value. */
+ uint8_t return_value;
+
+ ShowStatus show_status;
+ bool confirm_spawn;
+ bool no_console_output;
+
+ ExecOutput default_std_output, default_std_error;
+
+ 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;
+ bool default_tasks_accounting;
+
+ uint64_t default_tasks_max;
+ usec_t default_timer_accuracy_usec;
+
+ struct rlimit *rlimit[_RLIMIT_MAX];
+
+ /* non-zero if we are reloading or reexecuting, */
+ int n_reloading;
+
+ 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;
+
+ /* Do we have any outstanding password prompts? */
+ int have_ask_password;
+ int ask_password_inotify_fd;
+ sd_event_source *ask_password_event_source;
+
+ /* Type=idle pipes */
+ 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;
+
+ /* Used for processing polkit authorization responses */
+ Hashmap *polkit_registry;
+
+ /* When the user hits C-A-D more than 7 times per 2s, reboot immediately... */
+ RateLimit ctrl_alt_del_ratelimit;
+
+ const char *unit_log_field;
+ const char *unit_log_format_string;
+
+ int first_boot;
+};
+
+int manager_new(ManagerRunningAs running_as, bool test_run, Manager **m);
+Manager* manager_free(Manager *m);
+
+void manager_enumerate(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_job_from_dbus_path(Manager *m, const char *s, Job **_j);
+
+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, sd_bus_error *e, Job **_ret);
+int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, sd_bus_error *e, Job **_ret);
+int manager_add_job_by_name_and_warn(Manager *m, JobType type, const char *name, JobMode mode, 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_clear_jobs(Manager *m);
+
+unsigned manager_dispatch_load_queue(Manager *m);
+
+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);
+
+int manager_open_serialization(Manager *m, FILE **_f);
+
+int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root);
+int manager_deserialize(Manager *m, FILE *f, 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_inactive_or_pending(Manager *m, const char *name);
+
+void manager_check_finished(Manager *m);
+
+void manager_recheck_journal(Manager *m);
+
+void manager_set_show_status(Manager *m, ShowStatus mode);
+void manager_set_first_boot(Manager *m, bool b);
+
+void manager_status_printf(Manager *m, StatusType type, 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);
+
+int manager_update_failed_units(Manager *m, Unit *u, bool failed);
+
+const char *manager_state_to_string(ManagerState m) _const_;
+ManagerState manager_state_from_string(const char *s) _pure_;