src/core/manager.h

	manager.h revision 9a0549093332880df47c4218209ce126b8586835
3802a3d3d7af51ddff31943d5514382f01265770Lennart Poettering/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek#pragma once
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek/***
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek  This file is part of systemd.
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek  Copyright 2010 Lennart Poettering
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek  systemd is free software; you can redistribute it and/or modify it
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek  under the terms of the GNU Lesser General Public License as published by
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek  the Free Software Foundation; either version 2.1 of the License, or
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek  (at your option) any later version.
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek  systemd is distributed in the hope that it will be useful, but
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek  WITHOUT ANY WARRANTY; without even the implied warranty of
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek  Lesser General Public License for more details.
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek  You should have received a copy of the GNU Lesser General Public License
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek  along with systemd; If not, see <http://www.gnu.org/licenses/>.
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek***/
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek#include <stdbool.h>
301af7e4853ad0281402f8d86f5a77c6cb7ce9f4Josh Triplett#include <inttypes.h>
301af7e4853ad0281402f8d86f5a77c6cb7ce9f4Josh Triplett#include <stdio.h>
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek#include "sd-bus.h"
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek#include "sd-event.h"
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek#include "fdset.h"
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek#include "cgroup-util.h"
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek/* Enforce upper limit how many names we allow */
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek#define MANAGER_MAX_NAMES 131072 /* 128K */
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmektypedef struct Manager Manager;
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmektypedef enum ManagerState {
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        MANAGER_STARTING,
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        MANAGER_RUNNING,
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        MANAGER_DEGRADED,
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        MANAGER_MAINTENANCE,
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        MANAGER_STOPPING,
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        _MANAGER_STATE_MAX,
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        _MANAGER_STATE_INVALID = -1
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek} ManagerState;
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek
301af7e4853ad0281402f8d86f5a77c6cb7ce9f4Josh Tripletttypedef enum ManagerExitCode {
301af7e4853ad0281402f8d86f5a77c6cb7ce9f4Josh Triplett        MANAGER_OK,
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        MANAGER_EXIT,
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        MANAGER_RELOAD,
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        MANAGER_REEXECUTE,
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        MANAGER_REBOOT,
301af7e4853ad0281402f8d86f5a77c6cb7ce9f4Josh Triplett        MANAGER_POWEROFF,
301af7e4853ad0281402f8d86f5a77c6cb7ce9f4Josh Triplett        MANAGER_HALT,
301af7e4853ad0281402f8d86f5a77c6cb7ce9f4Josh Triplett        MANAGER_KEXEC,
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        MANAGER_SWITCH_ROOT,
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        _MANAGER_EXIT_CODE_MAX,
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        _MANAGER_EXIT_CODE_INVALID = -1
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek} ManagerExitCode;
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek
301af7e4853ad0281402f8d86f5a77c6cb7ce9f4Josh Triplett#include "unit.h"
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek#include "job.h"
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek#include "hashmap.h"
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek#include "list.h"
301af7e4853ad0281402f8d86f5a77c6cb7ce9f4Josh Triplett#include "set.h"
301af7e4853ad0281402f8d86f5a77c6cb7ce9f4Josh Triplett#include "path-lookup.h"
301af7e4853ad0281402f8d86f5a77c6cb7ce9f4Josh Triplett#include "execute.h"
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek#include "unit-name.h"
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek#include "exit-status.h"
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek#include "show-status.h"
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmekstruct Manager {
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        /* Note that the set of units we know of is allowed to be
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek         * inconsistent. However the subset of it that is loaded may
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek         * not, and the list of jobs may neither. */
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        /* Active jobs and units */
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        Hashmap *units;  /* name string => Unit object n:1 */
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        Hashmap *jobs;   /* job id => Job object 1:1 */
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        /* To make it easy to iterate through the units of a specific
8d0e0ddda6501479eb69164687c83c1a7667b33aJan Engelhardt         * type we maintain a per type linked list */
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        LIST_HEAD(Unit, units_by_type[_UNIT_TYPE_MAX]);
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        /* Units that need to be loaded */
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        LIST_HEAD(Unit, load_queue); /* this is actually more a stack than a queue, but uh. */
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        /* Jobs that need to be run */
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        LIST_HEAD(Job, run_queue);   /* more a stack than a queue, too */
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        /* Units and jobs that have not yet been announced via
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek         * D-Bus. When something about a job changes it is added here
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek         * if it is not in there yet. This allows easy coalescing of
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek         * D-Bus change signals. */
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        LIST_HEAD(Unit, dbus_unit_queue);
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        LIST_HEAD(Job, dbus_job_queue);
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek
8c9571d0ae50656f730a5e37378d5c3dcf3b9789Lennart Poettering        /* Units to remove */
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        LIST_HEAD(Unit, cleanup_queue);
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek
8c9571d0ae50656f730a5e37378d5c3dcf3b9789Lennart Poettering        /* Units to check when doing GC */
8c9571d0ae50656f730a5e37378d5c3dcf3b9789Lennart Poettering        LIST_HEAD(Unit, gc_queue);
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        /* Units that should be realized */
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        LIST_HEAD(Unit, cgroup_queue);
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        sd_event *event;
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        /* We use two hash tables here, since the same PID might be
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek         * watched by two different units: once the unit that forked
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek         * it off, and possibly a different unit to which it was
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek         * joined as cgroup member. Since we know that it is either
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek         * one or two units for each PID we just use to hashmaps
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek         * here. */
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        Hashmap *watch_pids1;  /* pid => Unit object n:1 */
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        Hashmap *watch_pids2;  /* pid => Unit object n:1 */
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        /* A set contains all units which cgroup should be refreshed after startup */
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        Set *startup_units;
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        /* A set which contains all currently failed units */
0dc5d23c85db85f96b141d4d32deee8018e56a6aLennart Poettering        Set *failed_units;
0dc5d23c85db85f96b141d4d32deee8018e56a6aLennart Poettering
0dc5d23c85db85f96b141d4d32deee8018e56a6aLennart Poettering        sd_event_source *run_queue_event_source;
0dc5d23c85db85f96b141d4d32deee8018e56a6aLennart Poettering
0dc5d23c85db85f96b141d4d32deee8018e56a6aLennart Poettering        char *notify_socket;
0dc5d23c85db85f96b141d4d32deee8018e56a6aLennart Poettering        int notify_fd;
0dc5d23c85db85f96b141d4d32deee8018e56a6aLennart Poettering        sd_event_source *notify_event_source;
0dc5d23c85db85f96b141d4d32deee8018e56a6aLennart Poettering
0dc5d23c85db85f96b141d4d32deee8018e56a6aLennart Poettering        int signal_fd;
0dc5d23c85db85f96b141d4d32deee8018e56a6aLennart Poettering        sd_event_source *signal_event_source;
0dc5d23c85db85f96b141d4d32deee8018e56a6aLennart Poettering
0dc5d23c85db85f96b141d4d32deee8018e56a6aLennart Poettering        int time_change_fd;
0dc5d23c85db85f96b141d4d32deee8018e56a6aLennart Poettering        sd_event_source *time_change_event_source;
0dc5d23c85db85f96b141d4d32deee8018e56a6aLennart Poettering
cbfaff65cb086e3eb3709cf86dcf63b46622389bKarel Zak        sd_event_source *jobs_in_progress_event_source;
0dc5d23c85db85f96b141d4d32deee8018e56a6aLennart Poettering
0dc5d23c85db85f96b141d4d32deee8018e56a6aLennart Poettering        unsigned n_snapshots;
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        LookupPaths lookup_paths;
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        Set *unit_path_cache;
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        char **environment;
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        usec_t runtime_watchdog;
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        usec_t shutdown_watchdog;
0dc5d23c85db85f96b141d4d32deee8018e56a6aLennart Poettering
0dc5d23c85db85f96b141d4d32deee8018e56a6aLennart Poettering        dual_timestamp firmware_timestamp;
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        dual_timestamp loader_timestamp;
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        dual_timestamp kernel_timestamp;
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        dual_timestamp initrd_timestamp;
3cc765d2718ac9b4ff978044ceabf5ad59d73edfZbigniew Jędrzejewski-Szmek        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 */
        FILE *proc_self_mountinfo;
        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;

        sd_bus_message *queued_message; /* This is used during reloading:
                                      * before the reload we queue the
                                      * reply message here, and
                                      * afterwards we send it */
        sd_bus *queued_message_bus; /* The connection to send the queued message on */

        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;
        CGroupControllerMask cgroup_supported;
        char *cgroup_root;

        int gc_marker;
        unsigned n_in_gc_queue;

        /* Make sure the user cannot accidentally unmount our cgroup
         * file system */
        int pin_cgroupfs_fd;

        /* Flags */
        SystemdRunningAs running_as;
        ManagerExitCode exit_code:5;

        bool dispatching_load_queue:1;
        bool dispatching_dbus_queue:1;

        bool taint_usr:1;

        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;

        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;

        /* 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;
};

int manager_new(SystemdRunningAs running_as, Manager **m);
void manager_free(Manager *m);

int 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_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, 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, 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);

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);

void manager_dispatch_bus_name_owner_changed(Manager *m, const char *name, const char* old_owner, const char *new_owner);

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_run_generators(Manager *m);
void manager_undo_generators(Manager *m);

void manager_recheck_journal(Manager *m);

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);

const char *manager_state_to_string(ManagerState m) _const_;
ManagerState manager_state_from_string(const char *s) _pure_;