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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 | 38 | typedef enum ManagerState { |
d81afec1 | 39 | MANAGER_INITIALIZING, |
f755e3b7 | 40 | MANAGER_STARTING, |
a16e1123 | 41 | MANAGER_RUNNING, |
f755e3b7 LP |
42 | MANAGER_DEGRADED, |
43 | MANAGER_MAINTENANCE, | |
44 | MANAGER_STOPPING, | |
45 | _MANAGER_STATE_MAX, | |
46 | _MANAGER_STATE_INVALID = -1 | |
47 | } ManagerState; | |
48 | ||
49 | typedef enum ManagerExitCode { | |
50 | MANAGER_OK, | |
a16e1123 LP |
51 | MANAGER_EXIT, |
52 | MANAGER_RELOAD, | |
53 | MANAGER_REEXECUTE, | |
b9080b03 FF |
54 | MANAGER_REBOOT, |
55 | MANAGER_POWEROFF, | |
56 | MANAGER_HALT, | |
57 | MANAGER_KEXEC, | |
664f88a7 | 58 | MANAGER_SWITCH_ROOT, |
a16e1123 LP |
59 | _MANAGER_EXIT_CODE_MAX, |
60 | _MANAGER_EXIT_CODE_INVALID = -1 | |
61 | } ManagerExitCode; | |
62 | ||
127d5fd1 ZJS |
63 | typedef enum StatusType { |
64 | STATUS_TYPE_EPHEMERAL, | |
65 | STATUS_TYPE_NORMAL, | |
66 | } StatusType; | |
67 | ||
87f0e418 | 68 | #include "unit.h" |
60918275 LP |
69 | #include "job.h" |
70 | #include "hashmap.h" | |
71 | #include "list.h" | |
72 | #include "set.h" | |
84e3543e | 73 | #include "path-lookup.h" |
c17ec25e | 74 | #include "execute.h" |
4ad49000 | 75 | #include "unit-name.h" |
d450b6f2 | 76 | #include "exit-status.h" |
4d7213b2 | 77 | #include "show-status.h" |
2928b0a8 | 78 | #include "failure-action.h" |
60918275 LP |
79 | |
80 | struct Manager { | |
87f0e418 | 81 | /* Note that the set of units we know of is allowed to be |
35b8ca3a | 82 | * inconsistent. However the subset of it that is loaded may |
87d1515d LP |
83 | * not, and the list of jobs may neither. */ |
84 | ||
87f0e418 LP |
85 | /* Active jobs and units */ |
86 | Hashmap *units; /* name string => Unit object n:1 */ | |
60918275 LP |
87 | Hashmap *jobs; /* job id => Job object 1:1 */ |
88 | ||
ef734fd6 LP |
89 | /* To make it easy to iterate through the units of a specific |
90 | * type we maintain a per type linked list */ | |
ac155bb8 | 91 | LIST_HEAD(Unit, units_by_type[_UNIT_TYPE_MAX]); |
ef734fd6 | 92 | |
87f0e418 | 93 | /* Units that need to be loaded */ |
ac155bb8 | 94 | LIST_HEAD(Unit, load_queue); /* this is actually more a stack than a queue, but uh. */ |
60918275 | 95 | |
034c6ed7 LP |
96 | /* Jobs that need to be run */ |
97 | LIST_HEAD(Job, run_queue); /* more a stack than a queue, too */ | |
98 | ||
c1e1601e LP |
99 | /* Units and jobs that have not yet been announced via |
100 | * D-Bus. When something about a job changes it is added here | |
101 | * if it is not in there yet. This allows easy coalescing of | |
102 | * D-Bus change signals. */ | |
ac155bb8 | 103 | LIST_HEAD(Unit, dbus_unit_queue); |
c1e1601e LP |
104 | LIST_HEAD(Job, dbus_job_queue); |
105 | ||
701cc384 | 106 | /* Units to remove */ |
ac155bb8 | 107 | LIST_HEAD(Unit, cleanup_queue); |
23a177ef | 108 | |
701cc384 | 109 | /* Units to check when doing GC */ |
ac155bb8 | 110 | LIST_HEAD(Unit, gc_queue); |
701cc384 | 111 | |
4ad49000 LP |
112 | /* Units that should be realized */ |
113 | LIST_HEAD(Unit, cgroup_queue); | |
114 | ||
718db961 LP |
115 | sd_event *event; |
116 | ||
5ba6985b LP |
117 | /* We use two hash tables here, since the same PID might be |
118 | * watched by two different units: once the unit that forked | |
119 | * it off, and possibly a different unit to which it was | |
120 | * joined as cgroup member. Since we know that it is either | |
121 | * one or two units for each PID we just use to hashmaps | |
122 | * here. */ | |
123 | Hashmap *watch_pids1; /* pid => Unit object n:1 */ | |
124 | Hashmap *watch_pids2; /* pid => Unit object n:1 */ | |
9152c765 | 125 | |
95ae05c0 WC |
126 | /* A set contains all units which cgroup should be refreshed after startup */ |
127 | Set *startup_units; | |
128 | ||
f755e3b7 LP |
129 | /* A set which contains all currently failed units */ |
130 | Set *failed_units; | |
131 | ||
752b5905 LP |
132 | sd_event_source *run_queue_event_source; |
133 | ||
c952c6ec | 134 | char *notify_socket; |
718db961 LP |
135 | int notify_fd; |
136 | sd_event_source *notify_event_source; | |
137 | ||
138 | int signal_fd; | |
139 | sd_event_source *signal_event_source; | |
c952c6ec | 140 | |
718db961 LP |
141 | int time_change_fd; |
142 | sd_event_source *time_change_event_source; | |
9d58f1db | 143 | |
718db961 | 144 | sd_event_source *jobs_in_progress_event_source; |
acbb0225 | 145 | |
9d58f1db | 146 | unsigned n_snapshots; |
ce578209 | 147 | |
84e3543e | 148 | LookupPaths lookup_paths; |
fe51822e | 149 | Set *unit_path_cache; |
036643a2 | 150 | |
1137a57c LP |
151 | char **environment; |
152 | ||
e96d6be7 LP |
153 | usec_t runtime_watchdog; |
154 | usec_t shutdown_watchdog; | |
155 | ||
915b3753 LP |
156 | dual_timestamp firmware_timestamp; |
157 | dual_timestamp loader_timestamp; | |
158 | dual_timestamp kernel_timestamp; | |
e9ddabc2 | 159 | dual_timestamp initrd_timestamp; |
915b3753 | 160 | dual_timestamp userspace_timestamp; |
b0c918b9 | 161 | dual_timestamp finish_timestamp; |
2928b0a8 | 162 | |
c2e0d600 TA |
163 | dual_timestamp security_start_timestamp; |
164 | dual_timestamp security_finish_timestamp; | |
518d10e9 UTL |
165 | dual_timestamp generators_start_timestamp; |
166 | dual_timestamp generators_finish_timestamp; | |
718db961 LP |
167 | dual_timestamp units_load_start_timestamp; |
168 | dual_timestamp units_load_finish_timestamp; | |
8d567588 | 169 | |
5a1e9937 | 170 | char *generator_unit_path; |
07719a21 LP |
171 | char *generator_unit_path_early; |
172 | char *generator_unit_path_late; | |
b2bb3dbe | 173 | |
25ac040b | 174 | struct udev* udev; |
9670d583 LP |
175 | |
176 | /* Data specific to the device subsystem */ | |
f94ea366 | 177 | struct udev_monitor* udev_monitor; |
718db961 | 178 | sd_event_source *udev_event_source; |
8fe914ec | 179 | Hashmap *devices_by_sysfs; |
ef734fd6 LP |
180 | |
181 | /* Data specific to the mount subsystem */ | |
182 | FILE *proc_self_mountinfo; | |
718db961 | 183 | sd_event_source *mount_event_source; |
ea430986 | 184 | |
07b0b134 ML |
185 | /* Data specific to the swap filesystem */ |
186 | FILE *proc_swaps; | |
718db961 | 187 | sd_event_source *swap_event_source; |
9670d583 | 188 | Hashmap *swaps_by_devnode; |
07b0b134 | 189 | |
ea430986 | 190 | /* Data specific to the D-Bus subsystem */ |
718db961 LP |
191 | sd_bus *api_bus, *system_bus; |
192 | Set *private_buses; | |
193 | int private_listen_fd; | |
194 | sd_event_source *private_listen_event_source; | |
8f8f05a9 LP |
195 | |
196 | /* Contains all the clients that are subscribed to signals via | |
197 | the API bus. Note that private bus connections are always | |
198 | considered subscribes, since they last for very short only, | |
199 | and it is much simpler that way. */ | |
200 | sd_bus_track *subscribed; | |
201 | char **deserialized_subscribed; | |
5e8d1c9a | 202 | |
718db961 | 203 | sd_bus_message *queued_message; /* This is used during reloading: |
a16e1123 LP |
204 | * before the reload we queue the |
205 | * reply message here, and | |
206 | * afterwards we send it */ | |
718db961 | 207 | sd_bus *queued_message_bus; /* The connection to send the queued message on */ |
8e274523 | 208 | |
05e343b7 | 209 | Hashmap *watch_bus; /* D-Bus names => Unit object n:1 */ |
05e343b7 | 210 | |
71445ae7 LP |
211 | bool send_reloading_done; |
212 | ||
7fab9d01 | 213 | uint32_t current_job_id; |
bacbccb7 | 214 | uint32_t default_unit_job_id; |
7fab9d01 | 215 | |
9d58f1db LP |
216 | /* Data specific to the Automount subsystem */ |
217 | int dev_autofs_fd; | |
218 | ||
8e274523 | 219 | /* Data specific to the cgroup subsystem */ |
4ad49000 LP |
220 | Hashmap *cgroup_unit; |
221 | CGroupControllerMask cgroup_supported; | |
9444b1f2 | 222 | char *cgroup_root; |
e537352b | 223 | |
701cc384 LP |
224 | int gc_marker; |
225 | unsigned n_in_gc_queue; | |
226 | ||
35b8ca3a | 227 | /* Make sure the user cannot accidentally unmount our cgroup |
33be102a LP |
228 | * file system */ |
229 | int pin_cgroupfs_fd; | |
230 | ||
9d58f1db | 231 | /* Flags */ |
67445f4e | 232 | SystemdRunningAs running_as; |
b9080b03 | 233 | ManagerExitCode exit_code:5; |
41447faf | 234 | |
9d58f1db | 235 | bool dispatching_load_queue:1; |
9d58f1db LP |
236 | bool dispatching_dbus_queue:1; |
237 | ||
72bc8d00 | 238 | bool taint_usr:1; |
e2680723 | 239 | bool first_boot:1; |
72bc8d00 | 240 | |
0d8c31ff ZJS |
241 | bool test_run:1; |
242 | ||
d450b6f2 | 243 | ShowStatus show_status; |
f295f5c0 | 244 | bool confirm_spawn; |
31a7eb86 | 245 | bool no_console_output; |
d3689161 | 246 | |
0a494f1f LP |
247 | ExecOutput default_std_output, default_std_error; |
248 | ||
085afe36 | 249 | usec_t default_restart_usec, default_timeout_start_usec, default_timeout_stop_usec; |
1f19a534 | 250 | |
3f41e1e5 LN |
251 | usec_t default_start_limit_interval; |
252 | unsigned default_start_limit_burst; | |
253 | ||
085afe36 LP |
254 | bool default_cpu_accounting; |
255 | bool default_memory_accounting; | |
256 | bool default_blockio_accounting; | |
257 | ||
bd8f585b LP |
258 | usec_t default_timer_accuracy_usec; |
259 | ||
517d56b1 | 260 | struct rlimit *rlimit[_RLIMIT_MAX]; |
c93ff2e9 | 261 | |
a7556052 LP |
262 | /* non-zero if we are reloading or reexecuting, */ |
263 | int n_reloading; | |
e409f875 LP |
264 | |
265 | unsigned n_installed_jobs; | |
76bf48b7 | 266 | unsigned n_failed_jobs; |
f2b68789 | 267 | |
03b717a3 | 268 | /* Jobs in progress watching */ |
637f8b8e | 269 | unsigned n_running_jobs; |
7ed9f6cd | 270 | unsigned n_on_console; |
03b717a3 | 271 | unsigned jobs_in_progress_iteration; |
637f8b8e | 272 | |
e46b13c8 ZJS |
273 | /* Do we have any outstanding password prompts? */ |
274 | int have_ask_password; | |
275 | int ask_password_inotify_fd; | |
276 | sd_event_source *ask_password_event_source; | |
277 | ||
f2b68789 | 278 | /* Type=idle pipes */ |
31a7eb86 | 279 | int idle_pipe[4]; |
718db961 | 280 | sd_event_source *idle_pipe_event_source; |
664f88a7 LP |
281 | |
282 | char *switch_root; | |
283 | char *switch_root_init; | |
a57f7e2c LP |
284 | |
285 | /* This maps all possible path prefixes to the units needing | |
286 | * them. It's a hashmap with a path string as key and a Set as | |
287 | * value where Unit objects are contained. */ | |
288 | Hashmap *units_requiring_mounts_for; | |
e3dd987c LP |
289 | |
290 | /* Reference to the kdbus bus control fd */ | |
291 | int kdbus_fd; | |
283868e1 SW |
292 | |
293 | /* Used for processing polkit authorization responses */ | |
294 | Hashmap *polkit_registry; | |
60918275 LP |
295 | }; |
296 | ||
0d8c31ff | 297 | int manager_new(SystemdRunningAs running_as, bool test_run, Manager **m); |
60918275 LP |
298 | void manager_free(Manager *m); |
299 | ||
a16e1123 | 300 | int manager_enumerate(Manager *m); |
a16e1123 | 301 | int manager_startup(Manager *m, FILE *serialization, FDSet *fds); |
f50e0a01 | 302 | |
60918275 | 303 | Job *manager_get_job(Manager *m, uint32_t id); |
87f0e418 | 304 | Unit *manager_get_unit(Manager *m, const char *name); |
60918275 | 305 | |
a57f7e2c LP |
306 | int manager_get_unit_by_path(Manager *m, const char *path, const char *suffix, Unit **_found); |
307 | ||
86fbf370 | 308 | int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j); |
ea430986 | 309 | |
718db961 LP |
310 | int manager_load_unit_prepare(Manager *m, const char *name, const char *path, sd_bus_error *e, Unit **_ret); |
311 | int manager_load_unit(Manager *m, const char *name, const char *path, sd_bus_error *e, Unit **_ret); | |
312 | int manager_load_unit_from_dbus_path(Manager *m, const char *s, sd_bus_error *e, Unit **_u); | |
28247076 | 313 | |
718db961 LP |
314 | int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool force, sd_bus_error *e, Job **_ret); |
315 | int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool force, sd_bus_error *e, Job **_ret); | |
60918275 | 316 | |
87f0e418 | 317 | void manager_dump_units(Manager *s, FILE *f, const char *prefix); |
cea8e32e | 318 | void manager_dump_jobs(Manager *s, FILE *f, const char *prefix); |
a66d02c3 | 319 | |
7fad411c LP |
320 | void manager_clear_jobs(Manager *m); |
321 | ||
c1e1601e | 322 | unsigned manager_dispatch_load_queue(Manager *m); |
f50e0a01 | 323 | |
718db961 | 324 | int manager_environment_add(Manager *m, char **minus, char **plus); |
c93ff2e9 | 325 | int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit); |
b2bb3dbe | 326 | |
9152c765 | 327 | int manager_loop(Manager *m); |
83c60c9f | 328 | |
05e343b7 | 329 | void manager_dispatch_bus_name_owner_changed(Manager *m, const char *name, const char* old_owner, const char *new_owner); |
05e343b7 | 330 | |
d8d5ab98 | 331 | int manager_open_serialization(Manager *m, FILE **_f); |
a16e1123 | 332 | |
b3680f49 | 333 | int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root); |
a16e1123 LP |
334 | int manager_deserialize(Manager *m, FILE *f, FDSet *fds); |
335 | ||
336 | int manager_reload(Manager *m); | |
337 | ||
44a6b1b6 | 338 | bool manager_is_reloading_or_reexecuting(Manager *m) _pure_; |
c17ec25e | 339 | |
fdf20a31 | 340 | void manager_reset_failed(Manager *m); |
5632e374 | 341 | |
4927fcae | 342 | void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success); |
e983b760 | 343 | void manager_send_unit_plymouth(Manager *m, Unit *u); |
4927fcae | 344 | |
31afa0a4 | 345 | bool manager_unit_inactive_or_pending(Manager *m, const char *name); |
8f6df3fa | 346 | |
b0c918b9 LP |
347 | void manager_check_finished(Manager *m); |
348 | ||
5a1e9937 LP |
349 | void manager_run_generators(Manager *m); |
350 | void manager_undo_generators(Manager *m); | |
351 | ||
4cfa2c99 | 352 | void manager_recheck_journal(Manager *m); |
f1dd0c3f | 353 | |
d450b6f2 | 354 | void manager_set_show_status(Manager *m, ShowStatus mode); |
e2680723 LP |
355 | void manager_set_first_boot(Manager *m, bool b); |
356 | ||
127d5fd1 | 357 | void manager_status_printf(Manager *m, StatusType type, const char *status, const char *format, ...) _printf_(4,5); |
cb8ccb22 | 358 | void manager_flip_auto_status(Manager *m, bool enable); |
68b29a9f | 359 | |
a57f7e2c | 360 | Set *manager_get_units_requiring_mounts_for(Manager *m, const char *path); |
e66cf1a3 LP |
361 | |
362 | const char *manager_get_runtime_prefix(Manager *m); | |
f755e3b7 LP |
363 | |
364 | ManagerState manager_state(Manager *m); | |
365 | ||
366 | const char *manager_state_to_string(ManagerState m) _const_; | |
367 | ManagerState manager_state_from_string(const char *s) _pure_; |