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/>.
29 #include <dbus/dbus.h>
31 typedef struct Manager Manager;
32 typedef enum WatchType WatchType;
33 typedef struct Watch Watch;
35 typedef enum ManagerRunningAs {
36 MANAGER_INIT, /* root and pid=1 */
37 MANAGER_SYSTEM, /* root and pid!=1 */
38 MANAGER_SESSION, /* non-root */
39 _MANAGER_RUNNING_AS_MAX,
40 _MANAGER_RUNNING_AS_INVALID = -1
61 DBusTimeout *bus_timeout;
72 #define SPECIAL_DEFAULT_TARGET "default.target"
73 #define SPECIAL_SYSLOG_SERVICE "syslog.service"
74 #define SPECIAL_DBUS_SERVICE "messagebus.service"
75 #define SPECIAL_LOGGER_SOCKET "systemd-logger.socket"
76 #define SPECIAL_KBREQUEST_TARGET "kbrequest.target"
77 #define SPECIAL_CTRL_ALT_DEL_TARGET "ctrl-alt-del.target"
78 #define SPECIAL_LOCAL_FS_TARGET "local-fs.target"
79 #define SPECIAL_NETWORK_TARGET "network.target"
80 #define SPECIAL_NSS_LOOKUP_TARGET "nss-lookup.target" /* LSB's $named */
81 #define SPECIAL_RPCBIND_TARGET "rpcbind.target" /* LSB's $portmap */
82 #define SPECIAL_REMOTE_FS_TARGET "remote-fs.target"
83 #define SPECIAL_SYSLOG_TARGET "syslog.target" /* Should pull in syslog.socket or syslog.service */
84 #define SPECIAL_RTC_SET_TARGET "rtc-set.target" /* LSB's $time */
86 /* For SysV compatibility. Usually an alias for a saner target. On
87 * SysV-free systems this doesn't exist. */
88 #define SPECIAL_RUNLEVEL0_TARGET "runlevel0.target"
89 #define SPECIAL_RUNLEVEL1_TARGET "runlevel1.target"
90 #define SPECIAL_RUNLEVEL2_TARGET "runlevel2.target"
91 #define SPECIAL_RUNLEVEL3_TARGET "runlevel3.target"
92 #define SPECIAL_RUNLEVEL4_TARGET "runlevel4.target"
93 #define SPECIAL_RUNLEVEL5_TARGET "runlevel5.target"
94 #define SPECIAL_RUNLEVEL6_TARGET "runlevel6.target"
97 /* In which mode are we running */
98 ManagerRunningAs running_as;
100 uint32_t current_job_id;
102 /* Note that the set of units we know of is allowed to be
103 * incosistent. However the subset of it that is loaded may
104 * not, and the list of jobs may neither. */
106 /* Active jobs and units */
107 Hashmap *units; /* name string => Unit object n:1 */
108 Hashmap *jobs; /* job id => Job object 1:1 */
110 /* To make it easy to iterate through the units of a specific
111 * type we maintain a per type linked list */
112 LIST_HEAD(Meta, units_per_type[_UNIT_TYPE_MAX]);
114 /* Units that need to be loaded */
115 LIST_HEAD(Meta, load_queue); /* this is actually more a stack than a queue, but uh. */
117 /* Jobs that need to be run */
118 LIST_HEAD(Job, run_queue); /* more a stack than a queue, too */
120 /* Units and jobs that have not yet been announced via
121 * D-Bus. When something about a job changes it is added here
122 * if it is not in there yet. This allows easy coalescing of
123 * D-Bus change signals. */
124 LIST_HEAD(Meta, dbus_unit_queue);
125 LIST_HEAD(Job, dbus_job_queue);
127 /* Jobs to be added */
128 Hashmap *transaction_jobs; /* Unit object => Job object list 1:1 */
129 JobDependency *transaction_anchor;
131 bool dispatching_load_queue:1;
132 bool dispatching_run_queue:1;
133 bool dispatching_dbus_queue:1;
135 bool request_bus_dispatch:1;
137 Hashmap *watch_pids; /* pid => Unit object n:1 */
144 char **sysvinit_path;
146 /* Data specific to the device subsystem */
148 struct udev_monitor* udev_monitor;
151 /* Data specific to the mount subsystem */
152 FILE *proc_self_mountinfo;
155 /* Data specific to the D-Bus subsystem */
160 Manager* manager_new(void);
161 void manager_free(Manager *m);
163 int manager_coldplug(Manager *m);
165 Job *manager_get_job(Manager *m, uint32_t id);
166 Unit *manager_get_unit(Manager *m, const char *name);
168 int manager_get_unit_from_dbus_path(Manager *m, const char *s, Unit **_u);
169 int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j);
171 int manager_load_unit(Manager *m, const char *path_or_name, Unit **_ret);
172 int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool force, Job **_ret);
174 void manager_dump_units(Manager *s, FILE *f, const char *prefix);
175 void manager_dump_jobs(Manager *s, FILE *f, const char *prefix);
177 void manager_transaction_unlink_job(Manager *m, Job *j);
179 void manager_clear_jobs(Manager *m);
181 unsigned manager_dispatch_load_queue(Manager *m);
182 unsigned manager_dispatch_run_queue(Manager *m);
183 unsigned manager_dispatch_dbus_queue(Manager *m);
185 int manager_loop(Manager *m);
187 const char *manager_running_as_to_string(ManagerRunningAs i);
188 ManagerRunningAs manager_running_as_from_string(const char *s);