1 /*-*- Mode: C; c-basic-offset: 8 -*-*/
7 This file is part of systemd.
9 Copyright 2010 Lennart Poettering
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.
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.
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/>.
28 #include <dbus/dbus.h>
32 /* Enforce upper limit how many names we allow */
33 #define MANAGER_MAX_NAMES 2048
35 typedef struct Manager Manager;
36 typedef enum WatchType WatchType;
37 typedef struct Watch Watch;
39 typedef enum ManagerExitCode {
44 _MANAGER_EXIT_CODE_MAX,
45 _MANAGER_EXIT_CODE_INVALID = -1
48 typedef enum ManagerRunningAs {
49 MANAGER_INIT, /* root and pid=1 */
50 MANAGER_SYSTEM, /* root and pid!=1 */
51 MANAGER_SESSION, /* non-root, for a session */
52 _MANAGER_RUNNING_AS_MAX,
53 _MANAGER_RUNNING_AS_INVALID = -1
73 DBusTimeout *bus_timeout;
86 #define SPECIAL_DEFAULT_TARGET "default.target"
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
92 #define SPECIAL_SHUTDOWN_TARGET "shutdown.target"
94 #define SPECIAL_LOGGER_SOCKET "systemd-logger.socket"
96 #define SPECIAL_KBREQUEST_TARGET "kbrequest.target"
97 #define SPECIAL_SIGPWR_TARGET "sigpwr.target"
98 #define SPECIAL_CTRL_ALT_DEL_TARGET "ctrl-alt-del.target"
100 #define SPECIAL_LOCAL_FS_TARGET "local-fs.target" /* LSB's $local_fs */
101 #define SPECIAL_REMOTE_FS_TARGET "remote-fs.target" /* LSB's $remote_fs */
102 #define SPECIAL_SWAP_TARGET "swap.target"
103 #define SPECIAL_NETWORK_TARGET "network.target" /* LSB's $network */
104 #define SPECIAL_NSS_LOOKUP_TARGET "nss-lookup.target" /* LSB's $named */
105 #define SPECIAL_RPCBIND_TARGET "rpcbind.target" /* LSB's $portmap */
106 #define SPECIAL_SYSLOG_TARGET "syslog.target" /* LSB's $syslog; Should pull in syslog.socket or syslog.service */
107 #define SPECIAL_RTC_SET_TARGET "rtc-set.target" /* LSB's $time */
108 #define SPECIAL_DISPLAY_MANAGER_SERVICE "display-manager.service" /* Debian's $x-display-manager */
109 #define SPECIAL_MAIL_TRANSFER_AGENT_TARGET "mail-transfer-agent.target" /* Debian's $mail-{transport|transfer-agent */
110 #define SPECIAL_BASIC_TARGET "basic.target"
111 #define SPECIAL_RESCUE_TARGET "rescue.target"
112 #define SPECIAL_EXIT_SERVICE "exit.service"
114 #ifndef SPECIAL_DBUS_SERVICE
115 #define SPECIAL_DBUS_SERVICE "dbus.service"
118 #ifndef SPECIAL_SYSLOG_SERVICE
119 #define SPECIAL_SYSLOG_SERVICE "syslog.service"
122 /* For SysV compatibility. Usually an alias for a saner target. On
123 * SysV-free systems this doesn't exist. */
124 #define SPECIAL_RUNLEVEL0_TARGET "runlevel0.target"
125 #define SPECIAL_RUNLEVEL1_TARGET "runlevel1.target"
126 #define SPECIAL_RUNLEVEL2_TARGET "runlevel2.target"
127 #define SPECIAL_RUNLEVEL3_TARGET "runlevel3.target"
128 #define SPECIAL_RUNLEVEL4_TARGET "runlevel4.target"
129 #define SPECIAL_RUNLEVEL5_TARGET "runlevel5.target"
130 #define SPECIAL_RUNLEVEL6_TARGET "runlevel6.target"
133 uint32_t current_job_id;
135 /* Note that the set of units we know of is allowed to be
136 * incosistent. However the subset of it that is loaded may
137 * not, and the list of jobs may neither. */
139 /* Active jobs and units */
140 Hashmap *units; /* name string => Unit object n:1 */
141 Hashmap *jobs; /* job id => Job object 1:1 */
143 /* To make it easy to iterate through the units of a specific
144 * type we maintain a per type linked list */
145 LIST_HEAD(Meta, units_per_type[_UNIT_TYPE_MAX]);
147 /* Units that need to be loaded */
148 LIST_HEAD(Meta, load_queue); /* this is actually more a stack than a queue, but uh. */
150 /* Jobs that need to be run */
151 LIST_HEAD(Job, run_queue); /* more a stack than a queue, too */
153 /* Units and jobs that have not yet been announced via
154 * D-Bus. When something about a job changes it is added here
155 * if it is not in there yet. This allows easy coalescing of
156 * D-Bus change signals. */
157 LIST_HEAD(Meta, dbus_unit_queue);
158 LIST_HEAD(Job, dbus_job_queue);
160 /* Units to remove */
161 LIST_HEAD(Meta, cleanup_queue);
163 /* Units to check when doing GC */
164 LIST_HEAD(Meta, gc_queue);
166 /* Jobs to be added */
167 Hashmap *transaction_jobs; /* Unit object => Job object list 1:1 */
168 JobDependency *transaction_anchor;
170 Hashmap *watch_pids; /* pid => Unit object n:1 */
176 unsigned n_snapshots;
179 char **sysvinit_path;
180 char **sysvrcnd_path;
184 timestamp startup_timestamp;
186 /* Data specific to the device subsystem */
188 struct udev_monitor* udev_monitor;
191 /* Data specific to the mount subsystem */
192 FILE *proc_self_mountinfo;
195 /* Data specific to the swap filesystem */
198 /* Data specific to the D-Bus subsystem */
199 DBusConnection *api_bus, *system_bus;
201 DBusMessage *queued_message; /* This is used during reloading:
202 * before the reload we queue the
203 * reply message here, and
204 * afterwards we send it */
206 Hashmap *watch_bus; /* D-Bus names => Unit object n:1 */
207 int32_t name_data_slot;
209 /* Data specific to the Automount subsystem */
212 /* Data specific to the cgroup subsystem */
213 Hashmap *cgroup_bondings; /* path string => CGroupBonding object 1:n */
214 char *cgroup_controller;
215 char *cgroup_hierarchy;
217 usec_t gc_queue_timestamp;
220 unsigned n_in_gc_queue;
223 ManagerRunningAs running_as;
224 ManagerExitCode exit_code:4;
226 bool dispatching_load_queue:1;
227 bool dispatching_run_queue:1;
228 bool dispatching_dbus_queue:1;
230 bool request_api_bus_dispatch:1;
231 bool request_system_bus_dispatch:1;
233 bool utmp_reboot_written:1;
235 bool confirm_spawn:1;
238 int manager_new(ManagerRunningAs running_as, bool confirm_spawn, Manager **m);
239 void manager_free(Manager *m);
241 int manager_enumerate(Manager *m);
242 int manager_coldplug(Manager *m);
243 int manager_startup(Manager *m, FILE *serialization, FDSet *fds);
245 Job *manager_get_job(Manager *m, uint32_t id);
246 Unit *manager_get_unit(Manager *m, const char *name);
248 int manager_get_unit_from_dbus_path(Manager *m, const char *s, Unit **_u);
249 int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j);
251 int manager_load_unit_prepare(Manager *m, const char *name, const char *path, Unit **_ret);
252 int manager_load_unit(Manager *m, const char *name, const char *path, Unit **_ret);
254 int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool force, Job **_ret);
255 int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool force, Job **_ret);
257 void manager_dump_units(Manager *s, FILE *f, const char *prefix);
258 void manager_dump_jobs(Manager *s, FILE *f, const char *prefix);
260 void manager_transaction_unlink_job(Manager *m, Job *j, bool delete_dependencies);
262 void manager_clear_jobs(Manager *m);
264 unsigned manager_dispatch_load_queue(Manager *m);
265 unsigned manager_dispatch_run_queue(Manager *m);
266 unsigned manager_dispatch_dbus_queue(Manager *m);
268 int manager_loop(Manager *m);
270 void manager_write_utmp_reboot(Manager *m);
271 void manager_write_utmp_runlevel(Manager *m, Unit *t);
273 void manager_dispatch_bus_name_owner_changed(Manager *m, const char *name, const char* old_owner, const char *new_owner);
274 void manager_dispatch_bus_query_pid_done(Manager *m, const char *name, pid_t pid);
276 int manager_open_serialization(FILE **_f);
278 int manager_serialize(Manager *m, FILE *f, FDSet *fds);
279 int manager_deserialize(Manager *m, FILE *f, FDSet *fds);
281 int manager_reload(Manager *m);
283 const char *manager_running_as_to_string(ManagerRunningAs i);
284 ManagerRunningAs manager_running_as_from_string(const char *s);