2010-08-17 03:33:07 +02:00
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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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2009-11-18 00:42:52 +01:00
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2012-07-18 19:07:51 +02:00
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#pragma once
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2009-11-18 00:42:52 +01:00
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2010-02-03 13:03:47 +01:00
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/***
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This file is part of systemd.
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Copyright 2010 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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2012-04-12 00:20:58 +02:00
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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2010-02-03 13:03:47 +01:00
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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2012-04-12 00:20:58 +02:00
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Lesser General Public License for more details.
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2010-02-03 13:03:47 +01:00
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2012-04-12 00:20:58 +02:00
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You should have received a copy of the GNU Lesser General Public License
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2010-02-03 13:03:47 +01:00
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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2009-11-18 00:42:52 +01:00
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#include <stdbool.h>
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#include <inttypes.h>
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2010-01-19 00:22:34 +01:00
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#include <stdio.h>
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2010-02-01 03:33:24 +01:00
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2013-11-19 21:12:59 +01:00
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#include "sd-bus.h"
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#include "sd-event.h"
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2010-04-21 03:27:44 +02:00
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#include "fdset.h"
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2013-06-27 04:14:27 +02:00
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#include "cgroup-util.h"
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2010-04-21 03:27:44 +02:00
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2010-04-22 02:56:42 +02:00
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/* Enforce upper limit how many names we allow */
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2010-11-24 23:36:40 +01:00
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#define MANAGER_MAX_NAMES 131072 /* 128K */
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2010-04-22 02:56:42 +02:00
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2009-11-18 00:42:52 +01:00
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typedef struct Manager Manager;
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2010-01-27 04:31:52 +01:00
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2010-04-21 03:27:44 +02:00
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typedef enum ManagerExitCode {
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MANAGER_RUNNING,
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MANAGER_EXIT,
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MANAGER_RELOAD,
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MANAGER_REEXECUTE,
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2010-10-14 00:52:26 +02:00
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MANAGER_REBOOT,
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MANAGER_POWEROFF,
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MANAGER_HALT,
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MANAGER_KEXEC,
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2012-05-09 01:24:50 +02:00
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MANAGER_SWITCH_ROOT,
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2010-04-21 03:27:44 +02:00
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_MANAGER_EXIT_CODE_MAX,
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_MANAGER_EXIT_CODE_INVALID = -1
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} ManagerExitCode;
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2010-01-26 21:39:06 +01:00
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#include "unit.h"
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2009-11-18 00:42:52 +01:00
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#include "job.h"
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#include "hashmap.h"
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#include "list.h"
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#include "set.h"
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2010-06-15 14:45:15 +02:00
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#include "path-lookup.h"
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2013-03-14 18:12:27 +01:00
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#include "execute.h"
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2013-06-27 04:14:27 +02:00
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#include "unit-name.h"
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2014-01-28 04:27:07 +01:00
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#include "exit-status.h"
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2009-11-18 00:42:52 +01:00
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struct Manager {
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2010-01-26 21:39:06 +01:00
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/* Note that the set of units we know of is allowed to be
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2011-02-21 15:32:17 +01:00
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* inconsistent. However the subset of it that is loaded may
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2010-01-18 23:50:13 +01:00
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* not, and the list of jobs may neither. */
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2010-01-26 21:39:06 +01:00
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/* Active jobs and units */
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Hashmap *units; /* name string => Unit object n:1 */
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2009-11-18 00:42:52 +01:00
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Hashmap *jobs; /* job id => Job object 1:1 */
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2010-01-29 06:04:08 +01:00
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/* To make it easy to iterate through the units of a specific
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* type we maintain a per type linked list */
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2012-01-15 12:04:08 +01:00
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LIST_HEAD(Unit, units_by_type[_UNIT_TYPE_MAX]);
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2010-01-29 06:04:08 +01:00
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2010-01-26 21:39:06 +01:00
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/* Units that need to be loaded */
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2012-01-15 12:04:08 +01:00
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LIST_HEAD(Unit, load_queue); /* this is actually more a stack than a queue, but uh. */
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2009-11-18 00:42:52 +01:00
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2010-01-26 04:18:44 +01:00
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/* Jobs that need to be run */
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LIST_HEAD(Job, run_queue); /* more a stack than a queue, too */
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2010-02-05 00:38:41 +01:00
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/* Units and jobs that have not yet been announced via
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* D-Bus. When something about a job changes it is added here
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* if it is not in there yet. This allows easy coalescing of
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* D-Bus change signals. */
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2012-01-15 12:04:08 +01:00
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LIST_HEAD(Unit, dbus_unit_queue);
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2010-02-05 00:38:41 +01:00
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LIST_HEAD(Job, dbus_job_queue);
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2010-04-21 06:01:13 +02:00
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/* Units to remove */
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2012-01-15 12:04:08 +01:00
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LIST_HEAD(Unit, cleanup_queue);
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2010-04-06 02:43:58 +02:00
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2010-04-21 06:01:13 +02:00
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/* Units to check when doing GC */
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2012-01-15 12:04:08 +01:00
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LIST_HEAD(Unit, gc_queue);
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2010-04-21 06:01:13 +02:00
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2013-06-27 04:14:27 +02:00
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/* Units that should be realized */
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LIST_HEAD(Unit, cgroup_queue);
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2013-11-19 21:12:59 +01:00
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sd_event *event;
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2014-02-07 11:58:25 +01:00
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/* We use two hash tables here, since the same PID might be
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* watched by two different units: once the unit that forked
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* it off, and possibly a different unit to which it was
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* joined as cgroup member. Since we know that it is either
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* one or two units for each PID we just use to hashmaps
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* here. */
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Hashmap *watch_pids1; /* pid => Unit object n:1 */
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Hashmap *watch_pids2; /* pid => Unit object n:1 */
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2010-01-24 00:39:29 +01:00
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2013-11-25 15:22:41 +01:00
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sd_event_source *run_queue_event_source;
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2010-06-18 23:12:48 +02:00
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char *notify_socket;
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2013-11-19 21:12:59 +01:00
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int notify_fd;
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sd_event_source *notify_event_source;
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int signal_fd;
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sd_event_source *signal_event_source;
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2010-06-18 23:12:48 +02:00
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2013-11-19 21:12:59 +01:00
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int time_change_fd;
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sd_event_source *time_change_event_source;
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2010-04-21 04:01:24 +02:00
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2013-11-19 21:12:59 +01:00
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sd_event_source *jobs_in_progress_event_source;
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2010-01-27 04:31:52 +01:00
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2010-04-21 04:01:24 +02:00
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unsigned n_snapshots;
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2010-01-28 02:01:15 +01:00
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2010-06-15 14:45:15 +02:00
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LookupPaths lookup_paths;
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2010-07-11 00:52:00 +02:00
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Set *unit_path_cache;
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2010-02-13 01:07:02 +01:00
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2010-05-09 23:53:52 +02:00
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char **environment;
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2012-04-05 22:08:10 +02:00
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usec_t runtime_watchdog;
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usec_t shutdown_watchdog;
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2012-09-13 18:54:32 +02:00
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dual_timestamp firmware_timestamp;
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dual_timestamp loader_timestamp;
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dual_timestamp kernel_timestamp;
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2010-11-08 06:31:09 +01:00
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dual_timestamp initrd_timestamp;
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2012-09-13 18:54:32 +02:00
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dual_timestamp userspace_timestamp;
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2010-09-21 04:14:38 +02:00
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dual_timestamp finish_timestamp;
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2013-11-10 23:21:15 +01:00
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dual_timestamp security_start_timestamp;
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dual_timestamp security_finish_timestamp;
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2013-05-08 14:29:12 +02:00
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dual_timestamp generators_start_timestamp;
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dual_timestamp generators_finish_timestamp;
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2013-11-19 21:12:59 +01:00
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dual_timestamp units_load_start_timestamp;
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dual_timestamp units_load_finish_timestamp;
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2010-04-16 23:24:39 +02:00
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2010-11-11 21:28:33 +01:00
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char *generator_unit_path;
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2012-05-23 03:43:29 +02:00
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char *generator_unit_path_early;
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char *generator_unit_path_late;
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2010-08-30 21:31:40 +02:00
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2010-01-28 06:46:33 +01:00
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struct udev* udev;
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2013-11-25 21:08:39 +01:00
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/* Data specific to the device subsystem */
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2010-01-29 06:45:59 +01:00
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struct udev_monitor* udev_monitor;
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2013-11-19 21:12:59 +01:00
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sd_event_source *udev_event_source;
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2010-07-20 20:33:19 +02:00
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Hashmap *devices_by_sysfs;
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2010-01-29 06:04:08 +01:00
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/* Data specific to the mount subsystem */
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FILE *proc_self_mountinfo;
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2013-11-19 21:12:59 +01:00
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sd_event_source *mount_event_source;
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2010-02-01 03:33:24 +01:00
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2010-05-09 18:44:11 +02:00
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/* Data specific to the swap filesystem */
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FILE *proc_swaps;
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2013-11-19 21:12:59 +01:00
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sd_event_source *swap_event_source;
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2013-11-25 21:08:39 +01:00
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Hashmap *swaps_by_devnode;
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2010-05-09 18:44:11 +02:00
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2010-02-01 03:33:24 +01:00
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/* Data specific to the D-Bus subsystem */
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2013-11-19 21:12:59 +01:00
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sd_bus *api_bus, *system_bus;
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Set *private_buses;
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int private_listen_fd;
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sd_event_source *private_listen_event_source;
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Set *subscribed;
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2010-06-19 03:04:04 +02:00
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2013-11-19 21:12:59 +01:00
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sd_bus_message *queued_message; /* This is used during reloading:
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2010-04-21 03:27:44 +02:00
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* before the reload we queue the
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* reply message here, and
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* afterwards we send it */
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2013-11-19 21:12:59 +01:00
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sd_bus *queued_message_bus; /* The connection to send the queued message on */
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2010-03-31 16:29:55 +02:00
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2010-04-15 23:16:16 +02:00
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Hashmap *watch_bus; /* D-Bus names => Unit object n:1 */
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2013-07-10 21:10:53 +02:00
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bool send_reloading_done;
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2010-08-11 22:37:10 +02:00
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uint32_t current_job_id;
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2012-02-02 12:39:33 +01:00
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uint32_t default_unit_job_id;
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2010-08-11 22:37:10 +02:00
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2010-04-21 04:01:24 +02:00
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/* Data specific to the Automount subsystem */
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int dev_autofs_fd;
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2010-03-31 16:29:55 +02:00
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/* Data specific to the cgroup subsystem */
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2013-06-27 04:14:27 +02:00
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Hashmap *cgroup_unit;
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CGroupControllerMask cgroup_supported;
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2013-06-20 03:45:08 +02:00
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char *cgroup_root;
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2010-04-10 17:53:17 +02:00
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2010-04-21 06:01:13 +02:00
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int gc_marker;
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unsigned n_in_gc_queue;
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2011-02-21 15:32:17 +01:00
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/* Make sure the user cannot accidentally unmount our cgroup
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2010-06-18 20:15:34 +02:00
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* file system */
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int pin_cgroupfs_fd;
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2010-04-21 04:01:24 +02:00
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/* Flags */
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2012-09-18 17:11:12 +02:00
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SystemdRunningAs running_as;
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2010-10-14 00:52:26 +02:00
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ManagerExitCode exit_code:5;
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2010-04-18 03:07:42 +02:00
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2010-04-21 04:01:24 +02:00
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bool dispatching_load_queue:1;
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bool dispatching_dbus_queue:1;
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2011-03-30 00:47:50 +02:00
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bool taint_usr:1;
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2014-01-28 04:27:07 +01:00
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ShowStatus show_status;
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2010-07-04 04:47:19 +02:00
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bool confirm_spawn;
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systemd: do not output status messages once gettys are running
Make Type=idle communication bidirectional: when bootup is finished,
the manager, as before, signals idling Type=idle jobs to continue.
However, if the boot takes too long, idling jobs signal the manager
that they have had enough, wait a tiny bit more, and continue, taking
ownership of the console. The manager, when signalled that Type=idle
jobs are done, makes a note and will not write to the console anymore.
This is a cosmetic issue, but quite noticable, so let's just fix it.
Based on Harald Hoyer's patch.
https://bugs.freedesktop.org/show_bug.cgi?id=54247
http://unix.stackexchange.com/questions/51805/systemd-messages-after-starting-login/
2013-07-16 03:34:57 +02:00
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bool no_console_output;
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2010-08-25 03:11:26 +02:00
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2011-02-15 11:52:29 +01:00
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ExecOutput default_std_output, default_std_error;
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2013-11-04 17:47:43 +01:00
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usec_t default_restart_usec, default_timeout_start_usec,
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default_timeout_stop_usec;
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2013-11-08 16:01:22 +01:00
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usec_t default_start_limit_interval;
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unsigned default_start_limit_burst;
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2012-03-21 18:03:40 +01:00
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struct rlimit *rlimit[RLIMIT_NLIMITS];
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2011-07-06 00:47:39 +02:00
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/* non-zero if we are reloading or reexecuting, */
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int n_reloading;
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2010-09-21 03:51:31 +02:00
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unsigned n_installed_jobs;
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2010-09-23 15:38:42 +02:00
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unsigned n_failed_jobs;
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2012-04-24 14:28:00 +02:00
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2013-02-28 00:03:22 +01:00
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/* Jobs in progress watching */
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2013-02-26 12:09:41 +01:00
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unsigned n_running_jobs;
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2013-02-28 00:01:10 +01:00
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unsigned n_on_console;
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2013-02-28 00:03:22 +01:00
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unsigned jobs_in_progress_iteration;
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2013-02-26 12:09:41 +01:00
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2012-04-24 14:28:00 +02:00
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/* Type=idle pipes */
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systemd: do not output status messages once gettys are running
Make Type=idle communication bidirectional: when bootup is finished,
the manager, as before, signals idling Type=idle jobs to continue.
However, if the boot takes too long, idling jobs signal the manager
that they have had enough, wait a tiny bit more, and continue, taking
ownership of the console. The manager, when signalled that Type=idle
jobs are done, makes a note and will not write to the console anymore.
This is a cosmetic issue, but quite noticable, so let's just fix it.
Based on Harald Hoyer's patch.
https://bugs.freedesktop.org/show_bug.cgi?id=54247
http://unix.stackexchange.com/questions/51805/systemd-messages-after-starting-login/
2013-07-16 03:34:57 +02:00
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int idle_pipe[4];
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2013-11-19 21:12:59 +01:00
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sd_event_source *idle_pipe_event_source;
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2012-05-09 01:24:50 +02:00
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char *switch_root;
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char *switch_root_init;
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2013-09-26 20:14:24 +02:00
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/* This maps all possible path prefixes to the units needing
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* them. It's a hashmap with a path string as key and a Set as
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* value where Unit objects are contained. */
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Hashmap *units_requiring_mounts_for;
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2013-11-30 03:53:42 +01:00
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/* Reference to the kdbus bus control fd */
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int kdbus_fd;
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2009-11-18 00:42:52 +01:00
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};
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2013-11-30 03:53:42 +01:00
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int manager_new(SystemdRunningAs running_as, Manager **m);
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2009-11-18 00:42:52 +01:00
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void manager_free(Manager *m);
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2010-04-21 03:27:44 +02:00
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int manager_enumerate(Manager *m);
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int manager_startup(Manager *m, FILE *serialization, FDSet *fds);
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2010-01-29 03:18:09 +01:00
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2009-11-18 00:42:52 +01:00
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Job *manager_get_job(Manager *m, uint32_t id);
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2010-01-26 21:39:06 +01:00
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Unit *manager_get_unit(Manager *m, const char *name);
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2009-11-18 00:42:52 +01:00
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2013-09-26 20:14:24 +02:00
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int manager_get_unit_by_path(Manager *m, const char *path, const char *suffix, Unit **_found);
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2010-02-02 12:42:08 +01:00
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int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j);
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2010-02-01 03:33:24 +01:00
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2013-11-19 21:12:59 +01:00
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int manager_load_unit_prepare(Manager *m, const char *name, const char *path, sd_bus_error *e, Unit **_ret);
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int manager_load_unit(Manager *m, const char *name, const char *path, sd_bus_error *e, Unit **_ret);
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int manager_load_unit_from_dbus_path(Manager *m, const char *s, sd_bus_error *e, Unit **_u);
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2010-04-13 01:59:06 +02:00
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2013-11-19 21:12:59 +01:00
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int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool force, sd_bus_error *e, Job **_ret);
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int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool force, sd_bus_error *e, Job **_ret);
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2009-11-18 00:42:52 +01:00
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2010-01-26 21:39:06 +01:00
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void manager_dump_units(Manager *s, FILE *f, const char *prefix);
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2010-01-20 04:02:39 +01:00
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void manager_dump_jobs(Manager *s, FILE *f, const char *prefix);
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2010-01-19 00:22:34 +01:00
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2010-01-20 05:03:52 +01:00
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void manager_clear_jobs(Manager *m);
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2010-02-05 00:38:41 +01:00
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unsigned manager_dispatch_load_queue(Manager *m);
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2010-01-29 03:18:09 +01:00
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2013-11-19 21:12:59 +01:00
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int manager_environment_add(Manager *m, char **minus, char **plus);
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2012-03-21 18:03:40 +01:00
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int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit);
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2010-08-30 21:31:40 +02:00
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2010-01-24 00:39:29 +01:00
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int manager_loop(Manager *m);
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2010-01-23 22:56:47 +01:00
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2010-04-15 23:16:16 +02:00
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void manager_dispatch_bus_name_owner_changed(Manager *m, const char *name, const char* old_owner, const char *new_owner);
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2010-07-20 20:54:33 +02:00
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int manager_open_serialization(Manager *m, FILE **_f);
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2010-04-21 03:27:44 +02:00
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2013-04-08 14:05:24 +02:00
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int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root);
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2010-04-21 03:27:44 +02:00
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int manager_deserialize(Manager *m, FILE *f, FDSet *fds);
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int manager_reload(Manager *m);
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2013-05-03 04:51:50 +02:00
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bool manager_is_reloading_or_reexecuting(Manager *m) _pure_;
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2013-03-14 18:12:27 +01:00
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2010-08-31 00:23:34 +02:00
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void manager_reset_failed(Manager *m);
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2010-07-18 04:58:01 +02:00
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2010-08-11 01:43:23 +02:00
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void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success);
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2010-10-06 03:55:49 +02:00
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void manager_send_unit_plymouth(Manager *m, Unit *u);
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2010-08-11 01:43:23 +02:00
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2013-04-26 02:57:41 +02:00
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bool manager_unit_inactive_or_pending(Manager *m, const char *name);
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2010-09-01 03:30:59 +02:00
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2010-09-21 04:14:38 +02:00
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void manager_check_finished(Manager *m);
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2010-11-11 21:28:33 +01:00
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void manager_run_generators(Manager *m);
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void manager_undo_generators(Manager *m);
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2012-01-12 05:09:06 +01:00
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void manager_recheck_journal(Manager *m);
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2011-03-18 04:31:22 +01:00
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2014-01-28 04:27:07 +01:00
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void manager_set_show_status(Manager *m, ShowStatus mode);
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2013-10-16 03:17:09 +02:00
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void manager_status_printf(Manager *m, bool ephemeral, const char *status, const char *format, ...) _printf_(4,5);
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2014-01-28 04:48:18 +01:00
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void manager_flip_auto_status(Manager *m, bool enable);
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2012-11-22 00:38:55 +01:00
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2013-09-26 20:14:24 +02:00
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Set *manager_get_units_requiring_mounts_for(Manager *m, const char *path);
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