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03467c88 | 1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
60918275 | 2 | |
c2f1db8f | 3 | #pragma once |
60918275 | 4 | |
a7334b09 LP |
5 | /*** |
6 | This file is part of systemd. | |
7 | ||
8 | Copyright 2010 Lennart Poettering | |
9 | ||
10 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
11 | under the terms of the GNU Lesser General Public License as published by |
12 | the Free Software Foundation; either version 2.1 of the License, or | |
a7334b09 LP |
13 | (at your option) any later version. |
14 | ||
15 | systemd is distributed in the hope that it will be useful, but | |
16 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 18 | Lesser General Public License for more details. |
a7334b09 | 19 | |
5430f7f2 | 20 | You should have received a copy of the GNU Lesser General Public License |
a7334b09 LP |
21 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
22 | ***/ | |
23 | ||
60918275 LP |
24 | #include <stdbool.h> |
25 | #include <inttypes.h> | |
a66d02c3 | 26 | #include <stdio.h> |
ea430986 | 27 | |
718db961 LP |
28 | #include "sd-bus.h" |
29 | #include "sd-event.h" | |
a16e1123 | 30 | #include "fdset.h" |
4ad49000 | 31 | #include "cgroup-util.h" |
a16e1123 | 32 | |
4f0f902f | 33 | /* Enforce upper limit how many names we allow */ |
59d1a833 | 34 | #define MANAGER_MAX_NAMES 131072 /* 128K */ |
4f0f902f | 35 | |
60918275 | 36 | typedef struct Manager Manager; |
acbb0225 | 37 | |
f755e3b7 LP |
38 | typedef enum ManagerState { |
39 | MANAGER_STARTING, | |
a16e1123 | 40 | MANAGER_RUNNING, |
f755e3b7 LP |
41 | MANAGER_DEGRADED, |
42 | MANAGER_MAINTENANCE, | |
43 | MANAGER_STOPPING, | |
44 | _MANAGER_STATE_MAX, | |
45 | _MANAGER_STATE_INVALID = -1 | |
46 | } ManagerState; | |
47 | ||
48 | typedef enum ManagerExitCode { | |
49 | MANAGER_OK, | |
a16e1123 LP |
50 | MANAGER_EXIT, |
51 | MANAGER_RELOAD, | |
52 | MANAGER_REEXECUTE, | |
b9080b03 FF |
53 | MANAGER_REBOOT, |
54 | MANAGER_POWEROFF, | |
55 | MANAGER_HALT, | |
56 | MANAGER_KEXEC, | |
664f88a7 | 57 | MANAGER_SWITCH_ROOT, |
a16e1123 LP |
58 | _MANAGER_EXIT_CODE_MAX, |
59 | _MANAGER_EXIT_CODE_INVALID = -1 | |
60 | } ManagerExitCode; | |
61 | ||
87f0e418 | 62 | #include "unit.h" |
60918275 LP |
63 | #include "job.h" |
64 | #include "hashmap.h" | |
65 | #include "list.h" | |
66 | #include "set.h" | |
84e3543e | 67 | #include "path-lookup.h" |
c17ec25e | 68 | #include "execute.h" |
4ad49000 | 69 | #include "unit-name.h" |
d450b6f2 | 70 | #include "exit-status.h" |
4d7213b2 | 71 | #include "show-status.h" |
60918275 LP |
72 | |
73 | struct Manager { | |
87f0e418 | 74 | /* Note that the set of units we know of is allowed to be |
35b8ca3a | 75 | * inconsistent. However the subset of it that is loaded may |
87d1515d LP |
76 | * not, and the list of jobs may neither. */ |
77 | ||
87f0e418 LP |
78 | /* Active jobs and units */ |
79 | Hashmap *units; /* name string => Unit object n:1 */ | |
60918275 LP |
80 | Hashmap *jobs; /* job id => Job object 1:1 */ |
81 | ||
ef734fd6 LP |
82 | /* To make it easy to iterate through the units of a specific |
83 | * type we maintain a per type linked list */ | |
ac155bb8 | 84 | LIST_HEAD(Unit, units_by_type[_UNIT_TYPE_MAX]); |
ef734fd6 | 85 | |
87f0e418 | 86 | /* Units that need to be loaded */ |
ac155bb8 | 87 | LIST_HEAD(Unit, load_queue); /* this is actually more a stack than a queue, but uh. */ |
60918275 | 88 | |
034c6ed7 LP |
89 | /* Jobs that need to be run */ |
90 | LIST_HEAD(Job, run_queue); /* more a stack than a queue, too */ | |
91 | ||
c1e1601e LP |
92 | /* Units and jobs that have not yet been announced via |
93 | * D-Bus. When something about a job changes it is added here | |
94 | * if it is not in there yet. This allows easy coalescing of | |
95 | * D-Bus change signals. */ | |
ac155bb8 | 96 | LIST_HEAD(Unit, dbus_unit_queue); |
c1e1601e LP |
97 | LIST_HEAD(Job, dbus_job_queue); |
98 | ||
701cc384 | 99 | /* Units to remove */ |
ac155bb8 | 100 | LIST_HEAD(Unit, cleanup_queue); |
23a177ef | 101 | |
701cc384 | 102 | /* Units to check when doing GC */ |
ac155bb8 | 103 | LIST_HEAD(Unit, gc_queue); |
701cc384 | 104 | |
4ad49000 LP |
105 | /* Units that should be realized */ |
106 | LIST_HEAD(Unit, cgroup_queue); | |
107 | ||
718db961 LP |
108 | sd_event *event; |
109 | ||
5ba6985b LP |
110 | /* We use two hash tables here, since the same PID might be |
111 | * watched by two different units: once the unit that forked | |
112 | * it off, and possibly a different unit to which it was | |
113 | * joined as cgroup member. Since we know that it is either | |
114 | * one or two units for each PID we just use to hashmaps | |
115 | * here. */ | |
116 | Hashmap *watch_pids1; /* pid => Unit object n:1 */ | |
117 | Hashmap *watch_pids2; /* pid => Unit object n:1 */ | |
9152c765 | 118 | |
f755e3b7 LP |
119 | /* A set which contains all currently failed units */ |
120 | Set *failed_units; | |
121 | ||
752b5905 LP |
122 | sd_event_source *run_queue_event_source; |
123 | ||
c952c6ec | 124 | char *notify_socket; |
718db961 LP |
125 | int notify_fd; |
126 | sd_event_source *notify_event_source; | |
127 | ||
128 | int signal_fd; | |
129 | sd_event_source *signal_event_source; | |
c952c6ec | 130 | |
718db961 LP |
131 | int time_change_fd; |
132 | sd_event_source *time_change_event_source; | |
9d58f1db | 133 | |
718db961 | 134 | sd_event_source *jobs_in_progress_event_source; |
acbb0225 | 135 | |
9d58f1db | 136 | unsigned n_snapshots; |
ce578209 | 137 | |
84e3543e | 138 | LookupPaths lookup_paths; |
fe51822e | 139 | Set *unit_path_cache; |
036643a2 | 140 | |
1137a57c LP |
141 | char **environment; |
142 | ||
e96d6be7 LP |
143 | usec_t runtime_watchdog; |
144 | usec_t shutdown_watchdog; | |
145 | ||
915b3753 LP |
146 | dual_timestamp firmware_timestamp; |
147 | dual_timestamp loader_timestamp; | |
148 | dual_timestamp kernel_timestamp; | |
e9ddabc2 | 149 | dual_timestamp initrd_timestamp; |
915b3753 | 150 | dual_timestamp userspace_timestamp; |
b0c918b9 | 151 | dual_timestamp finish_timestamp; |
c2e0d600 TA |
152 | dual_timestamp security_start_timestamp; |
153 | dual_timestamp security_finish_timestamp; | |
518d10e9 UTL |
154 | dual_timestamp generators_start_timestamp; |
155 | dual_timestamp generators_finish_timestamp; | |
718db961 LP |
156 | dual_timestamp units_load_start_timestamp; |
157 | dual_timestamp units_load_finish_timestamp; | |
8d567588 | 158 | |
5a1e9937 | 159 | char *generator_unit_path; |
07719a21 LP |
160 | char *generator_unit_path_early; |
161 | char *generator_unit_path_late; | |
b2bb3dbe | 162 | |
25ac040b | 163 | struct udev* udev; |
9670d583 LP |
164 | |
165 | /* Data specific to the device subsystem */ | |
f94ea366 | 166 | struct udev_monitor* udev_monitor; |
718db961 | 167 | sd_event_source *udev_event_source; |
8fe914ec | 168 | Hashmap *devices_by_sysfs; |
ef734fd6 LP |
169 | |
170 | /* Data specific to the mount subsystem */ | |
171 | FILE *proc_self_mountinfo; | |
718db961 | 172 | sd_event_source *mount_event_source; |
ea430986 | 173 | |
07b0b134 ML |
174 | /* Data specific to the swap filesystem */ |
175 | FILE *proc_swaps; | |
718db961 | 176 | sd_event_source *swap_event_source; |
9670d583 | 177 | Hashmap *swaps_by_devnode; |
07b0b134 | 178 | |
ea430986 | 179 | /* Data specific to the D-Bus subsystem */ |
718db961 LP |
180 | sd_bus *api_bus, *system_bus; |
181 | Set *private_buses; | |
182 | int private_listen_fd; | |
183 | sd_event_source *private_listen_event_source; | |
8f8f05a9 LP |
184 | |
185 | /* Contains all the clients that are subscribed to signals via | |
186 | the API bus. Note that private bus connections are always | |
187 | considered subscribes, since they last for very short only, | |
188 | and it is much simpler that way. */ | |
189 | sd_bus_track *subscribed; | |
190 | char **deserialized_subscribed; | |
5e8d1c9a | 191 | |
718db961 | 192 | sd_bus_message *queued_message; /* This is used during reloading: |
a16e1123 LP |
193 | * before the reload we queue the |
194 | * reply message here, and | |
195 | * afterwards we send it */ | |
718db961 | 196 | sd_bus *queued_message_bus; /* The connection to send the queued message on */ |
8e274523 | 197 | |
05e343b7 | 198 | Hashmap *watch_bus; /* D-Bus names => Unit object n:1 */ |
05e343b7 | 199 | |
71445ae7 LP |
200 | bool send_reloading_done; |
201 | ||
7fab9d01 | 202 | uint32_t current_job_id; |
bacbccb7 | 203 | uint32_t default_unit_job_id; |
7fab9d01 | 204 | |
9d58f1db LP |
205 | /* Data specific to the Automount subsystem */ |
206 | int dev_autofs_fd; | |
207 | ||
8e274523 | 208 | /* Data specific to the cgroup subsystem */ |
4ad49000 LP |
209 | Hashmap *cgroup_unit; |
210 | CGroupControllerMask cgroup_supported; | |
9444b1f2 | 211 | char *cgroup_root; |
e537352b | 212 | |
701cc384 LP |
213 | int gc_marker; |
214 | unsigned n_in_gc_queue; | |
215 | ||
35b8ca3a | 216 | /* Make sure the user cannot accidentally unmount our cgroup |
33be102a LP |
217 | * file system */ |
218 | int pin_cgroupfs_fd; | |
219 | ||
9d58f1db | 220 | /* Flags */ |
67445f4e | 221 | SystemdRunningAs running_as; |
b9080b03 | 222 | ManagerExitCode exit_code:5; |
41447faf | 223 | |
9d58f1db | 224 | bool dispatching_load_queue:1; |
9d58f1db LP |
225 | bool dispatching_dbus_queue:1; |
226 | ||
72bc8d00 LP |
227 | bool taint_usr:1; |
228 | ||
d450b6f2 | 229 | ShowStatus show_status; |
f295f5c0 | 230 | bool confirm_spawn; |
31a7eb86 | 231 | bool no_console_output; |
d3689161 | 232 | |
0a494f1f LP |
233 | ExecOutput default_std_output, default_std_error; |
234 | ||
085afe36 | 235 | usec_t default_restart_usec, default_timeout_start_usec, default_timeout_stop_usec; |
1f19a534 | 236 | |
3f41e1e5 LN |
237 | usec_t default_start_limit_interval; |
238 | unsigned default_start_limit_burst; | |
239 | ||
085afe36 LP |
240 | bool default_cpu_accounting; |
241 | bool default_memory_accounting; | |
242 | bool default_blockio_accounting; | |
b2f8b02e | 243 | usec_t default_cpu_quota_period_usec; |
085afe36 | 244 | |
bd8f585b LP |
245 | usec_t default_timer_accuracy_usec; |
246 | ||
517d56b1 | 247 | struct rlimit *rlimit[_RLIMIT_MAX]; |
c93ff2e9 | 248 | |
a7556052 LP |
249 | /* non-zero if we are reloading or reexecuting, */ |
250 | int n_reloading; | |
e409f875 LP |
251 | |
252 | unsigned n_installed_jobs; | |
76bf48b7 | 253 | unsigned n_failed_jobs; |
f2b68789 | 254 | |
03b717a3 | 255 | /* Jobs in progress watching */ |
637f8b8e | 256 | unsigned n_running_jobs; |
7ed9f6cd | 257 | unsigned n_on_console; |
03b717a3 | 258 | unsigned jobs_in_progress_iteration; |
637f8b8e | 259 | |
f2b68789 | 260 | /* Type=idle pipes */ |
31a7eb86 | 261 | int idle_pipe[4]; |
718db961 | 262 | sd_event_source *idle_pipe_event_source; |
664f88a7 LP |
263 | |
264 | char *switch_root; | |
265 | char *switch_root_init; | |
a57f7e2c LP |
266 | |
267 | /* This maps all possible path prefixes to the units needing | |
268 | * them. It's a hashmap with a path string as key and a Set as | |
269 | * value where Unit objects are contained. */ | |
270 | Hashmap *units_requiring_mounts_for; | |
e3dd987c LP |
271 | |
272 | /* Reference to the kdbus bus control fd */ | |
273 | int kdbus_fd; | |
60918275 LP |
274 | }; |
275 | ||
e3dd987c | 276 | int manager_new(SystemdRunningAs running_as, Manager **m); |
60918275 LP |
277 | void manager_free(Manager *m); |
278 | ||
a16e1123 | 279 | int manager_enumerate(Manager *m); |
a16e1123 | 280 | int manager_startup(Manager *m, FILE *serialization, FDSet *fds); |
f50e0a01 | 281 | |
60918275 | 282 | Job *manager_get_job(Manager *m, uint32_t id); |
87f0e418 | 283 | Unit *manager_get_unit(Manager *m, const char *name); |
60918275 | 284 | |
a57f7e2c LP |
285 | int manager_get_unit_by_path(Manager *m, const char *path, const char *suffix, Unit **_found); |
286 | ||
86fbf370 | 287 | int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j); |
ea430986 | 288 | |
718db961 LP |
289 | int manager_load_unit_prepare(Manager *m, const char *name, const char *path, sd_bus_error *e, Unit **_ret); |
290 | int manager_load_unit(Manager *m, const char *name, const char *path, sd_bus_error *e, Unit **_ret); | |
291 | int manager_load_unit_from_dbus_path(Manager *m, const char *s, sd_bus_error *e, Unit **_u); | |
28247076 | 292 | |
718db961 LP |
293 | int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool force, sd_bus_error *e, Job **_ret); |
294 | int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool force, sd_bus_error *e, Job **_ret); | |
60918275 | 295 | |
87f0e418 | 296 | void manager_dump_units(Manager *s, FILE *f, const char *prefix); |
cea8e32e | 297 | void manager_dump_jobs(Manager *s, FILE *f, const char *prefix); |
a66d02c3 | 298 | |
7fad411c LP |
299 | void manager_clear_jobs(Manager *m); |
300 | ||
c1e1601e | 301 | unsigned manager_dispatch_load_queue(Manager *m); |
f50e0a01 | 302 | |
718db961 | 303 | int manager_environment_add(Manager *m, char **minus, char **plus); |
c93ff2e9 | 304 | int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit); |
b2bb3dbe | 305 | |
9152c765 | 306 | int manager_loop(Manager *m); |
83c60c9f | 307 | |
05e343b7 | 308 | void manager_dispatch_bus_name_owner_changed(Manager *m, const char *name, const char* old_owner, const char *new_owner); |
05e343b7 | 309 | |
d8d5ab98 | 310 | int manager_open_serialization(Manager *m, FILE **_f); |
a16e1123 | 311 | |
b3680f49 | 312 | int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root); |
a16e1123 LP |
313 | int manager_deserialize(Manager *m, FILE *f, FDSet *fds); |
314 | ||
315 | int manager_reload(Manager *m); | |
316 | ||
44a6b1b6 | 317 | bool manager_is_reloading_or_reexecuting(Manager *m) _pure_; |
c17ec25e | 318 | |
fdf20a31 | 319 | void manager_reset_failed(Manager *m); |
5632e374 | 320 | |
4927fcae | 321 | void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success); |
e983b760 | 322 | void manager_send_unit_plymouth(Manager *m, Unit *u); |
4927fcae | 323 | |
31afa0a4 | 324 | bool manager_unit_inactive_or_pending(Manager *m, const char *name); |
8f6df3fa | 325 | |
b0c918b9 LP |
326 | void manager_check_finished(Manager *m); |
327 | ||
5a1e9937 LP |
328 | void manager_run_generators(Manager *m); |
329 | void manager_undo_generators(Manager *m); | |
330 | ||
4cfa2c99 | 331 | void manager_recheck_journal(Manager *m); |
f1dd0c3f | 332 | |
d450b6f2 | 333 | void manager_set_show_status(Manager *m, ShowStatus mode); |
44b601bc | 334 | void manager_status_printf(Manager *m, bool ephemeral, const char *status, const char *format, ...) _printf_(4,5); |
cb8ccb22 | 335 | void manager_flip_auto_status(Manager *m, bool enable); |
68b29a9f | 336 | |
a57f7e2c | 337 | Set *manager_get_units_requiring_mounts_for(Manager *m, const char *path); |
e66cf1a3 LP |
338 | |
339 | const char *manager_get_runtime_prefix(Manager *m); | |
f755e3b7 LP |
340 | |
341 | ManagerState manager_state(Manager *m); | |
342 | ||
343 | const char *manager_state_to_string(ManagerState m) _const_; | |
344 | ManagerState manager_state_from_string(const char *s) _pure_; |