]> git.ipfire.org Git - people/ms/systemd.git/blame - manager.h
service: treat 0 timeouts as no timeouts
[people/ms/systemd.git] / manager.h
CommitLineData
60918275
LP
1/*-*- Mode: C; c-basic-offset: 8 -*-*/
2
3#ifndef foomanagerhfoo
4#define foomanagerhfoo
5
a7334b09
LP
6/***
7 This file is part of systemd.
8
9 Copyright 2010 Lennart Poettering
10
11 systemd is free software; you can redistribute it and/or modify it
12 under the terms of the GNU General Public License as published by
13 the Free Software Foundation; either version 2 of the License, or
14 (at your option) any later version.
15
16 systemd is distributed in the hope that it will be useful, but
17 WITHOUT ANY WARRANTY; without even the implied warranty of
18 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19 General Public License for more details.
20
21 You should have received a copy of the GNU General Public License
22 along with systemd; If not, see <http://www.gnu.org/licenses/>.
23***/
24
60918275
LP
25#include <stdbool.h>
26#include <inttypes.h>
a66d02c3 27#include <stdio.h>
ea430986
LP
28#include <dbus/dbus.h>
29
a16e1123
LP
30#include "fdset.h"
31
4f0f902f
LP
32/* Enforce upper limit how many names we allow */
33#define MANAGER_MAX_NAMES 2048
34
60918275 35typedef struct Manager Manager;
acbb0225
LP
36typedef enum WatchType WatchType;
37typedef struct Watch Watch;
38
a16e1123
LP
39typedef enum ManagerExitCode {
40 MANAGER_RUNNING,
41 MANAGER_EXIT,
42 MANAGER_RELOAD,
43 MANAGER_REEXECUTE,
44 _MANAGER_EXIT_CODE_MAX,
45 _MANAGER_EXIT_CODE_INVALID = -1
46} ManagerExitCode;
47
dfcd764e
LP
48typedef enum ManagerRunningAs {
49 MANAGER_INIT, /* root and pid=1 */
50 MANAGER_SYSTEM, /* root and pid!=1 */
80876c20 51 MANAGER_SESSION, /* non-root, for a session */
dfcd764e
LP
52 _MANAGER_RUNNING_AS_MAX,
53 _MANAGER_RUNNING_AS_INVALID = -1
54} ManagerRunningAs;
55
acbb0225
LP
56enum WatchType {
57 WATCH_INVALID,
ef734fd6 58 WATCH_SIGNAL,
acbb0225 59 WATCH_FD,
ef734fd6 60 WATCH_TIMER,
f94ea366 61 WATCH_MOUNT,
ea430986
LP
62 WATCH_UDEV,
63 WATCH_DBUS_WATCH,
64 WATCH_DBUS_TIMEOUT
acbb0225
LP
65};
66
67struct Watch {
68 int fd;
69 WatchType type;
ea430986
LP
70 union {
71 union Unit *unit;
72 DBusWatch *bus_watch;
73 DBusTimeout *bus_timeout;
4f2d528d 74 bool socket_accept;
ea430986 75 } data;
9d58f1db 76 bool fd_is_dupped;
acbb0225 77};
60918275 78
87f0e418 79#include "unit.h"
60918275
LP
80#include "job.h"
81#include "hashmap.h"
82#include "list.h"
83#include "set.h"
ea430986 84#include "dbus.h"
60918275 85
f50e0a01 86#define SPECIAL_DEFAULT_TARGET "default.target"
28247076 87
6542952f
LP
88/* This is not really intended to be started by directly. This is
89 * mostly so that other targets (reboot/halt/poweroff) can depend on
90 * it to bring all services down that want to be brought down on
91 * system shutdown. */
92#define SPECIAL_SHUTDOWN_TARGET "shutdown.target"
93
f50e0a01 94#define SPECIAL_LOGGER_SOCKET "systemd-logger.socket"
28247076 95
f50e0a01 96#define SPECIAL_KBREQUEST_TARGET "kbrequest.target"
28247076 97#define SPECIAL_SIGPWR_TARGET "sigpwr.target"
f50e0a01 98#define SPECIAL_CTRL_ALT_DEL_TARGET "ctrl-alt-del.target"
28247076 99
2c4104f0 100#define SPECIAL_LOCAL_FS_TARGET "local-fs.target"
28247076 101#define SPECIAL_REMOTE_FS_TARGET "remote-fs.target"
2c4104f0
LP
102#define SPECIAL_NETWORK_TARGET "network.target"
103#define SPECIAL_NSS_LOOKUP_TARGET "nss-lookup.target" /* LSB's $named */
104#define SPECIAL_RPCBIND_TARGET "rpcbind.target" /* LSB's $portmap */
2c4104f0
LP
105#define SPECIAL_SYSLOG_TARGET "syslog.target" /* Should pull in syslog.socket or syslog.service */
106#define SPECIAL_RTC_SET_TARGET "rtc-set.target" /* LSB's $time */
28247076 107
adcbe07c 108#define SPECIAL_BASIC_TARGET "basic.target"
37d88da7 109#define SPECIAL_RESCUE_TARGET "rescue.target"
2c4104f0 110
2c696a96
LP
111#ifndef SPECIAL_DBUS_SERVICE
112#define SPECIAL_DBUS_SERVICE "dbus.service"
113#endif
114
115#ifndef SPECIAL_SYSLOG_SERVICE
116#define SPECIAL_SYSLOG_SERVICE "syslog.service"
117#endif
118
2c4104f0
LP
119/* For SysV compatibility. Usually an alias for a saner target. On
120 * SysV-free systems this doesn't exist. */
121#define SPECIAL_RUNLEVEL0_TARGET "runlevel0.target"
122#define SPECIAL_RUNLEVEL1_TARGET "runlevel1.target"
123#define SPECIAL_RUNLEVEL2_TARGET "runlevel2.target"
124#define SPECIAL_RUNLEVEL3_TARGET "runlevel3.target"
125#define SPECIAL_RUNLEVEL4_TARGET "runlevel4.target"
126#define SPECIAL_RUNLEVEL5_TARGET "runlevel5.target"
127#define SPECIAL_RUNLEVEL6_TARGET "runlevel6.target"
ce578209 128
60918275
LP
129struct Manager {
130 uint32_t current_job_id;
131
87f0e418 132 /* Note that the set of units we know of is allowed to be
87d1515d
LP
133 * incosistent. However the subset of it that is loaded may
134 * not, and the list of jobs may neither. */
135
87f0e418
LP
136 /* Active jobs and units */
137 Hashmap *units; /* name string => Unit object n:1 */
60918275
LP
138 Hashmap *jobs; /* job id => Job object 1:1 */
139
ef734fd6
LP
140 /* To make it easy to iterate through the units of a specific
141 * type we maintain a per type linked list */
142 LIST_HEAD(Meta, units_per_type[_UNIT_TYPE_MAX]);
143
87f0e418 144 /* Units that need to be loaded */
60918275
LP
145 LIST_HEAD(Meta, load_queue); /* this is actually more a stack than a queue, but uh. */
146
034c6ed7
LP
147 /* Jobs that need to be run */
148 LIST_HEAD(Job, run_queue); /* more a stack than a queue, too */
149
c1e1601e
LP
150 /* Units and jobs that have not yet been announced via
151 * D-Bus. When something about a job changes it is added here
152 * if it is not in there yet. This allows easy coalescing of
153 * D-Bus change signals. */
154 LIST_HEAD(Meta, dbus_unit_queue);
155 LIST_HEAD(Job, dbus_job_queue);
156
701cc384 157 /* Units to remove */
23a177ef
LP
158 LIST_HEAD(Meta, cleanup_queue);
159
701cc384
LP
160 /* Units to check when doing GC */
161 LIST_HEAD(Meta, gc_queue);
162
e5b5ae50 163 /* Jobs to be added */
87f0e418 164 Hashmap *transaction_jobs; /* Unit object => Job object list 1:1 */
e5b5ae50 165 JobDependency *transaction_anchor;
223dabab 166
87f0e418 167 Hashmap *watch_pids; /* pid => Unit object n:1 */
9152c765 168
9d58f1db
LP
169 Watch signal_watch;
170
9152c765 171 int epoll_fd;
acbb0225 172
9d58f1db 173 unsigned n_snapshots;
ce578209 174
036643a2
LP
175 char **unit_path;
176 char **sysvinit_path;
0571e011 177 char **sysvrcnd_path;
036643a2 178
8d567588
LP
179 usec_t boot_timestamp;
180
ef734fd6 181 /* Data specific to the device subsystem */
25ac040b 182 struct udev* udev;
f94ea366
LP
183 struct udev_monitor* udev_monitor;
184 Watch udev_watch;
ef734fd6
LP
185
186 /* Data specific to the mount subsystem */
187 FILE *proc_self_mountinfo;
188 Watch mount_watch;
ea430986
LP
189
190 /* Data specific to the D-Bus subsystem */
f278026d 191 DBusConnection *api_bus, *system_bus;
c1e1601e 192 Set *subscribed;
a16e1123
LP
193 DBusMessage *queued_message; /* This is used during reloading:
194 * before the reload we queue the
195 * reply message here, and
196 * afterwards we send it */
8e274523 197
05e343b7
LP
198 Hashmap *watch_bus; /* D-Bus names => Unit object n:1 */
199 int32_t name_data_slot;
200
9d58f1db
LP
201 /* Data specific to the Automount subsystem */
202 int dev_autofs_fd;
203
8e274523
LP
204 /* Data specific to the cgroup subsystem */
205 Hashmap *cgroup_bondings; /* path string => CGroupBonding object 1:n */
206 char *cgroup_controller;
207 char *cgroup_hierarchy;
e537352b 208
701cc384
LP
209 usec_t gc_queue_timestamp;
210
211 int gc_marker;
212 unsigned n_in_gc_queue;
213
9d58f1db
LP
214 /* Flags */
215 ManagerRunningAs running_as;
216 ManagerExitCode exit_code:4;
41447faf 217
9d58f1db
LP
218 bool dispatching_load_queue:1;
219 bool dispatching_run_queue:1;
220 bool dispatching_dbus_queue:1;
221
222 bool request_api_bus_dispatch:1;
223 bool request_system_bus_dispatch:1;
224
225 bool utmp_reboot_written:1;
226
227 bool confirm_spawn:1;
60918275
LP
228};
229
80876c20 230int manager_new(ManagerRunningAs running_as, bool confirm_spawn, Manager **m);
60918275
LP
231void manager_free(Manager *m);
232
a16e1123 233int manager_enumerate(Manager *m);
f50e0a01 234int manager_coldplug(Manager *m);
a16e1123 235int manager_startup(Manager *m, FILE *serialization, FDSet *fds);
f50e0a01 236
60918275 237Job *manager_get_job(Manager *m, uint32_t id);
87f0e418 238Unit *manager_get_unit(Manager *m, const char *name);
60918275 239
ea430986 240int manager_get_unit_from_dbus_path(Manager *m, const char *s, Unit **_u);
86fbf370 241int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j);
ea430986 242
9e2f7c11 243int manager_load_unit(Manager *m, const char *name, const char *path, Unit **_ret);
28247076 244
87f0e418 245int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool force, Job **_ret);
28247076 246int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool force, Job **_ret);
60918275 247
87f0e418 248void manager_dump_units(Manager *s, FILE *f, const char *prefix);
cea8e32e 249void manager_dump_jobs(Manager *s, FILE *f, const char *prefix);
a66d02c3 250
23a177ef 251void manager_transaction_unlink_job(Manager *m, Job *j, bool delete_dependencies);
e5b5ae50 252
7fad411c
LP
253void manager_clear_jobs(Manager *m);
254
c1e1601e
LP
255unsigned manager_dispatch_load_queue(Manager *m);
256unsigned manager_dispatch_run_queue(Manager *m);
257unsigned manager_dispatch_dbus_queue(Manager *m);
f50e0a01 258
9152c765 259int manager_loop(Manager *m);
83c60c9f 260
e537352b 261void manager_write_utmp_reboot(Manager *m);
e537352b
LP
262void manager_write_utmp_runlevel(Manager *m, Unit *t);
263
05e343b7
LP
264void manager_dispatch_bus_name_owner_changed(Manager *m, const char *name, const char* old_owner, const char *new_owner);
265void manager_dispatch_bus_query_pid_done(Manager *m, const char *name, pid_t pid);
266
a16e1123
LP
267int manager_open_serialization(FILE **_f);
268
269int manager_serialize(Manager *m, FILE *f, FDSet *fds);
270int manager_deserialize(Manager *m, FILE *f, FDSet *fds);
271
272int manager_reload(Manager *m);
273
05e343b7
LP
274const char *manager_running_as_to_string(ManagerRunningAs i);
275ManagerRunningAs manager_running_as_from_string(const char *s);
276
60918275 277#endif