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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 | 35 | typedef struct Manager Manager; |
acbb0225 LP |
36 | typedef enum WatchType WatchType; |
37 | typedef struct Watch Watch; | |
38 | ||
a16e1123 LP |
39 | typedef 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 |
48 | typedef 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 |
56 | enum 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 | ||
67 | struct 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 |
129 | struct 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 | 230 | int manager_new(ManagerRunningAs running_as, bool confirm_spawn, Manager **m); |
60918275 LP |
231 | void manager_free(Manager *m); |
232 | ||
a16e1123 | 233 | int manager_enumerate(Manager *m); |
f50e0a01 | 234 | int manager_coldplug(Manager *m); |
a16e1123 | 235 | int manager_startup(Manager *m, FILE *serialization, FDSet *fds); |
f50e0a01 | 236 | |
60918275 | 237 | Job *manager_get_job(Manager *m, uint32_t id); |
87f0e418 | 238 | Unit *manager_get_unit(Manager *m, const char *name); |
60918275 | 239 | |
ea430986 | 240 | int manager_get_unit_from_dbus_path(Manager *m, const char *s, Unit **_u); |
86fbf370 | 241 | int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j); |
ea430986 | 242 | |
9e2f7c11 | 243 | int manager_load_unit(Manager *m, const char *name, const char *path, Unit **_ret); |
28247076 | 244 | |
87f0e418 | 245 | int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool force, Job **_ret); |
28247076 | 246 | int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool force, Job **_ret); |
60918275 | 247 | |
87f0e418 | 248 | void manager_dump_units(Manager *s, FILE *f, const char *prefix); |
cea8e32e | 249 | void manager_dump_jobs(Manager *s, FILE *f, const char *prefix); |
a66d02c3 | 250 | |
23a177ef | 251 | void manager_transaction_unlink_job(Manager *m, Job *j, bool delete_dependencies); |
e5b5ae50 | 252 | |
7fad411c LP |
253 | void manager_clear_jobs(Manager *m); |
254 | ||
c1e1601e LP |
255 | unsigned manager_dispatch_load_queue(Manager *m); |
256 | unsigned manager_dispatch_run_queue(Manager *m); | |
257 | unsigned manager_dispatch_dbus_queue(Manager *m); | |
f50e0a01 | 258 | |
9152c765 | 259 | int manager_loop(Manager *m); |
83c60c9f | 260 | |
e537352b | 261 | void manager_write_utmp_reboot(Manager *m); |
e537352b LP |
262 | void manager_write_utmp_runlevel(Manager *m, Unit *t); |
263 | ||
05e343b7 LP |
264 | void manager_dispatch_bus_name_owner_changed(Manager *m, const char *name, const char* old_owner, const char *new_owner); |
265 | void manager_dispatch_bus_query_pid_done(Manager *m, const char *name, pid_t pid); | |
266 | ||
a16e1123 LP |
267 | int manager_open_serialization(FILE **_f); |
268 | ||
269 | int manager_serialize(Manager *m, FILE *f, FDSet *fds); | |
270 | int manager_deserialize(Manager *m, FILE *f, FDSet *fds); | |
271 | ||
272 | int manager_reload(Manager *m); | |
273 | ||
05e343b7 LP |
274 | const char *manager_running_as_to_string(ManagerRunningAs i); |
275 | ManagerRunningAs manager_running_as_from_string(const char *s); | |
276 | ||
60918275 | 277 | #endif |