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Commit | Line | Data |
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c2f1db8f | 1 | #pragma once |
60918275 | 2 | |
a7334b09 LP |
3 | /*** |
4 | This file is part of systemd. | |
5 | ||
6 | Copyright 2010 Lennart Poettering | |
7 | ||
8 | systemd is free software; you can redistribute it and/or modify it | |
5430f7f2 LP |
9 | under the terms of the GNU Lesser General Public License as published by |
10 | the Free Software Foundation; either version 2.1 of the License, or | |
a7334b09 LP |
11 | (at your option) any later version. |
12 | ||
13 | systemd is distributed in the hope that it will be useful, but | |
14 | WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
5430f7f2 | 16 | Lesser General Public License for more details. |
a7334b09 | 17 | |
5430f7f2 | 18 | You should have received a copy of the GNU Lesser General Public License |
a7334b09 LP |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. |
20 | ***/ | |
21 | ||
71d35b6b | 22 | #include <libmount.h> |
60918275 | 23 | #include <stdbool.h> |
a66d02c3 | 24 | #include <stdio.h> |
ea430986 | 25 | |
718db961 LP |
26 | #include "sd-bus.h" |
27 | #include "sd-event.h" | |
71d35b6b | 28 | |
4ad49000 | 29 | #include "cgroup-util.h" |
400f1a33 | 30 | #include "fdset.h" |
2e5c94b9 LP |
31 | #include "hashmap.h" |
32 | #include "list.h" | |
2e5c94b9 | 33 | #include "ratelimit.h" |
a16e1123 | 34 | |
4f0f902f | 35 | /* Enforce upper limit how many names we allow */ |
59d1a833 | 36 | #define MANAGER_MAX_NAMES 131072 /* 128K */ |
4f0f902f | 37 | |
60918275 | 38 | typedef struct Manager Manager; |
acbb0225 | 39 | |
f755e3b7 | 40 | typedef enum ManagerState { |
d81afec1 | 41 | MANAGER_INITIALIZING, |
f755e3b7 | 42 | MANAGER_STARTING, |
a16e1123 | 43 | MANAGER_RUNNING, |
f755e3b7 LP |
44 | MANAGER_DEGRADED, |
45 | MANAGER_MAINTENANCE, | |
46 | MANAGER_STOPPING, | |
47 | _MANAGER_STATE_MAX, | |
48 | _MANAGER_STATE_INVALID = -1 | |
49 | } ManagerState; | |
50 | ||
51 | typedef enum ManagerExitCode { | |
52 | MANAGER_OK, | |
a16e1123 LP |
53 | MANAGER_EXIT, |
54 | MANAGER_RELOAD, | |
55 | MANAGER_REEXECUTE, | |
b9080b03 FF |
56 | MANAGER_REBOOT, |
57 | MANAGER_POWEROFF, | |
58 | MANAGER_HALT, | |
59 | MANAGER_KEXEC, | |
664f88a7 | 60 | MANAGER_SWITCH_ROOT, |
a16e1123 LP |
61 | _MANAGER_EXIT_CODE_MAX, |
62 | _MANAGER_EXIT_CODE_INVALID = -1 | |
63 | } ManagerExitCode; | |
64 | ||
127d5fd1 ZJS |
65 | typedef enum StatusType { |
66 | STATUS_TYPE_EPHEMERAL, | |
67 | STATUS_TYPE_NORMAL, | |
ebc5788e | 68 | STATUS_TYPE_EMERGENCY, |
127d5fd1 ZJS |
69 | } StatusType; |
70 | ||
400f1a33 | 71 | #include "execute.h" |
60918275 | 72 | #include "job.h" |
84e3543e | 73 | #include "path-lookup.h" |
4d7213b2 | 74 | #include "show-status.h" |
400f1a33 | 75 | #include "unit-name.h" |
60918275 LP |
76 | |
77 | struct Manager { | |
87f0e418 | 78 | /* Note that the set of units we know of is allowed to be |
35b8ca3a | 79 | * inconsistent. However the subset of it that is loaded may |
87d1515d LP |
80 | * not, and the list of jobs may neither. */ |
81 | ||
87f0e418 LP |
82 | /* Active jobs and units */ |
83 | Hashmap *units; /* name string => Unit object n:1 */ | |
60918275 LP |
84 | Hashmap *jobs; /* job id => Job object 1:1 */ |
85 | ||
ef734fd6 LP |
86 | /* To make it easy to iterate through the units of a specific |
87 | * type we maintain a per type linked list */ | |
ac155bb8 | 88 | LIST_HEAD(Unit, units_by_type[_UNIT_TYPE_MAX]); |
ef734fd6 | 89 | |
87f0e418 | 90 | /* Units that need to be loaded */ |
ac155bb8 | 91 | LIST_HEAD(Unit, load_queue); /* this is actually more a stack than a queue, but uh. */ |
60918275 | 92 | |
034c6ed7 LP |
93 | /* Jobs that need to be run */ |
94 | LIST_HEAD(Job, run_queue); /* more a stack than a queue, too */ | |
95 | ||
c1e1601e LP |
96 | /* Units and jobs that have not yet been announced via |
97 | * D-Bus. When something about a job changes it is added here | |
98 | * if it is not in there yet. This allows easy coalescing of | |
99 | * D-Bus change signals. */ | |
ac155bb8 | 100 | LIST_HEAD(Unit, dbus_unit_queue); |
c1e1601e LP |
101 | LIST_HEAD(Job, dbus_job_queue); |
102 | ||
701cc384 | 103 | /* Units to remove */ |
ac155bb8 | 104 | LIST_HEAD(Unit, cleanup_queue); |
23a177ef | 105 | |
701cc384 | 106 | /* Units to check when doing GC */ |
ac155bb8 | 107 | LIST_HEAD(Unit, gc_queue); |
701cc384 | 108 | |
4ad49000 LP |
109 | /* Units that should be realized */ |
110 | LIST_HEAD(Unit, cgroup_queue); | |
111 | ||
718db961 LP |
112 | sd_event *event; |
113 | ||
5ba6985b LP |
114 | /* We use two hash tables here, since the same PID might be |
115 | * watched by two different units: once the unit that forked | |
116 | * it off, and possibly a different unit to which it was | |
117 | * joined as cgroup member. Since we know that it is either | |
118 | * one or two units for each PID we just use to hashmaps | |
119 | * here. */ | |
120 | Hashmap *watch_pids1; /* pid => Unit object n:1 */ | |
121 | Hashmap *watch_pids2; /* pid => Unit object n:1 */ | |
9152c765 | 122 | |
95ae05c0 WC |
123 | /* A set contains all units which cgroup should be refreshed after startup */ |
124 | Set *startup_units; | |
125 | ||
f755e3b7 LP |
126 | /* A set which contains all currently failed units */ |
127 | Set *failed_units; | |
128 | ||
752b5905 LP |
129 | sd_event_source *run_queue_event_source; |
130 | ||
c952c6ec | 131 | char *notify_socket; |
718db961 LP |
132 | int notify_fd; |
133 | sd_event_source *notify_event_source; | |
134 | ||
135 | int signal_fd; | |
136 | sd_event_source *signal_event_source; | |
c952c6ec | 137 | |
718db961 LP |
138 | int time_change_fd; |
139 | sd_event_source *time_change_event_source; | |
9d58f1db | 140 | |
718db961 | 141 | sd_event_source *jobs_in_progress_event_source; |
acbb0225 | 142 | |
463d0d15 | 143 | UnitFileScope unit_file_scope; |
84e3543e | 144 | LookupPaths lookup_paths; |
fe51822e | 145 | Set *unit_path_cache; |
036643a2 | 146 | |
1137a57c LP |
147 | char **environment; |
148 | ||
e96d6be7 LP |
149 | usec_t runtime_watchdog; |
150 | usec_t shutdown_watchdog; | |
151 | ||
915b3753 LP |
152 | dual_timestamp firmware_timestamp; |
153 | dual_timestamp loader_timestamp; | |
154 | dual_timestamp kernel_timestamp; | |
e9ddabc2 | 155 | dual_timestamp initrd_timestamp; |
915b3753 | 156 | dual_timestamp userspace_timestamp; |
b0c918b9 | 157 | dual_timestamp finish_timestamp; |
2928b0a8 | 158 | |
c2e0d600 TA |
159 | dual_timestamp security_start_timestamp; |
160 | dual_timestamp security_finish_timestamp; | |
518d10e9 UTL |
161 | dual_timestamp generators_start_timestamp; |
162 | dual_timestamp generators_finish_timestamp; | |
718db961 LP |
163 | dual_timestamp units_load_start_timestamp; |
164 | dual_timestamp units_load_finish_timestamp; | |
8d567588 | 165 | |
25ac040b | 166 | struct udev* udev; |
9670d583 LP |
167 | |
168 | /* Data specific to the device subsystem */ | |
f94ea366 | 169 | struct udev_monitor* udev_monitor; |
718db961 | 170 | sd_event_source *udev_event_source; |
8fe914ec | 171 | Hashmap *devices_by_sysfs; |
ef734fd6 LP |
172 | |
173 | /* Data specific to the mount subsystem */ | |
d379d442 | 174 | struct libmnt_monitor *mount_monitor; |
718db961 | 175 | sd_event_source *mount_event_source; |
ea430986 | 176 | |
07b0b134 ML |
177 | /* Data specific to the swap filesystem */ |
178 | FILE *proc_swaps; | |
718db961 | 179 | sd_event_source *swap_event_source; |
9670d583 | 180 | Hashmap *swaps_by_devnode; |
07b0b134 | 181 | |
ea430986 | 182 | /* Data specific to the D-Bus subsystem */ |
718db961 LP |
183 | sd_bus *api_bus, *system_bus; |
184 | Set *private_buses; | |
185 | int private_listen_fd; | |
186 | sd_event_source *private_listen_event_source; | |
8f8f05a9 LP |
187 | |
188 | /* Contains all the clients that are subscribed to signals via | |
189 | the API bus. Note that private bus connections are always | |
190 | considered subscribes, since they last for very short only, | |
191 | and it is much simpler that way. */ | |
192 | sd_bus_track *subscribed; | |
193 | char **deserialized_subscribed; | |
5e8d1c9a | 194 | |
8f88ecf6 LP |
195 | /* This is used during reloading: before the reload we queue |
196 | * the reply message here, and afterwards we send it */ | |
197 | sd_bus_message *queued_message; | |
8e274523 | 198 | |
05e343b7 | 199 | Hashmap *watch_bus; /* D-Bus names => Unit object n:1 */ |
05e343b7 | 200 | |
71445ae7 LP |
201 | bool send_reloading_done; |
202 | ||
7fab9d01 | 203 | uint32_t current_job_id; |
bacbccb7 | 204 | uint32_t default_unit_job_id; |
7fab9d01 | 205 | |
9d58f1db LP |
206 | /* Data specific to the Automount subsystem */ |
207 | int dev_autofs_fd; | |
208 | ||
8e274523 | 209 | /* Data specific to the cgroup subsystem */ |
4ad49000 | 210 | Hashmap *cgroup_unit; |
efdb0237 | 211 | CGroupMask cgroup_supported; |
9444b1f2 | 212 | char *cgroup_root; |
e537352b | 213 | |
efdb0237 LP |
214 | /* Notifications from cgroups, when the unified hierarchy is |
215 | * used is done via inotify. */ | |
216 | int cgroup_inotify_fd; | |
217 | sd_event_source *cgroup_inotify_event_source; | |
218 | Hashmap *cgroup_inotify_wd_unit; | |
701cc384 | 219 | |
35b8ca3a | 220 | /* Make sure the user cannot accidentally unmount our cgroup |
33be102a LP |
221 | * file system */ |
222 | int pin_cgroupfs_fd; | |
223 | ||
efdb0237 LP |
224 | int gc_marker; |
225 | unsigned n_in_gc_queue; | |
226 | ||
9d58f1db | 227 | /* Flags */ |
b9080b03 | 228 | ManagerExitCode exit_code:5; |
41447faf | 229 | |
9d58f1db | 230 | bool dispatching_load_queue:1; |
9d58f1db LP |
231 | bool dispatching_dbus_queue:1; |
232 | ||
72bc8d00 LP |
233 | bool taint_usr:1; |
234 | ||
0d8c31ff ZJS |
235 | bool test_run:1; |
236 | ||
287419c1 AC |
237 | /* If non-zero, exit with the following value when the systemd |
238 | * process terminate. Useful for containers: systemd-nspawn could get | |
239 | * the return value. */ | |
240 | uint8_t return_value; | |
241 | ||
d450b6f2 | 242 | ShowStatus show_status; |
f295f5c0 | 243 | bool confirm_spawn; |
31a7eb86 | 244 | bool no_console_output; |
d3689161 | 245 | |
0a494f1f LP |
246 | ExecOutput default_std_output, default_std_error; |
247 | ||
085afe36 | 248 | usec_t default_restart_usec, default_timeout_start_usec, default_timeout_stop_usec; |
1f19a534 | 249 | |
3f41e1e5 LN |
250 | usec_t default_start_limit_interval; |
251 | unsigned default_start_limit_burst; | |
252 | ||
085afe36 LP |
253 | bool default_cpu_accounting; |
254 | bool default_memory_accounting; | |
255 | bool default_blockio_accounting; | |
03a7b521 | 256 | bool default_tasks_accounting; |
085afe36 | 257 | |
0af20ea2 | 258 | uint64_t default_tasks_max; |
bd8f585b LP |
259 | usec_t default_timer_accuracy_usec; |
260 | ||
517d56b1 | 261 | struct rlimit *rlimit[_RLIMIT_MAX]; |
c93ff2e9 | 262 | |
a7556052 LP |
263 | /* non-zero if we are reloading or reexecuting, */ |
264 | int n_reloading; | |
e409f875 LP |
265 | |
266 | unsigned n_installed_jobs; | |
76bf48b7 | 267 | unsigned n_failed_jobs; |
f2b68789 | 268 | |
03b717a3 | 269 | /* Jobs in progress watching */ |
637f8b8e | 270 | unsigned n_running_jobs; |
7ed9f6cd | 271 | unsigned n_on_console; |
03b717a3 | 272 | unsigned jobs_in_progress_iteration; |
637f8b8e | 273 | |
e46b13c8 ZJS |
274 | /* Do we have any outstanding password prompts? */ |
275 | int have_ask_password; | |
276 | int ask_password_inotify_fd; | |
277 | sd_event_source *ask_password_event_source; | |
278 | ||
f2b68789 | 279 | /* Type=idle pipes */ |
31a7eb86 | 280 | int idle_pipe[4]; |
718db961 | 281 | sd_event_source *idle_pipe_event_source; |
664f88a7 LP |
282 | |
283 | char *switch_root; | |
284 | char *switch_root_init; | |
a57f7e2c LP |
285 | |
286 | /* This maps all possible path prefixes to the units needing | |
287 | * them. It's a hashmap with a path string as key and a Set as | |
288 | * value where Unit objects are contained. */ | |
289 | Hashmap *units_requiring_mounts_for; | |
e3dd987c LP |
290 | |
291 | /* Reference to the kdbus bus control fd */ | |
292 | int kdbus_fd; | |
283868e1 SW |
293 | |
294 | /* Used for processing polkit authorization responses */ | |
295 | Hashmap *polkit_registry; | |
2e5c94b9 LP |
296 | |
297 | /* When the user hits C-A-D more than 7 times per 2s, reboot immediately... */ | |
298 | RateLimit ctrl_alt_del_ratelimit; | |
f2341e0a LP |
299 | |
300 | const char *unit_log_field; | |
301 | const char *unit_log_format_string; | |
ae2a2c53 | 302 | |
463d0d15 | 303 | int first_boot; /* tri-state */ |
60918275 LP |
304 | }; |
305 | ||
463d0d15 LP |
306 | #define MANAGER_IS_SYSTEM(m) ((m)->unit_file_scope == UNIT_FILE_SYSTEM) |
307 | #define MANAGER_IS_USER(m) ((m)->unit_file_scope != UNIT_FILE_SYSTEM) | |
308 | ||
2c289ea8 LP |
309 | #define MANAGER_IS_RELOADING(m) ((m)->n_reloading > 0) |
310 | ||
463d0d15 | 311 | int manager_new(UnitFileScope scope, bool test_run, Manager **m); |
06d8d842 | 312 | Manager* manager_free(Manager *m); |
60918275 | 313 | |
ba64af90 | 314 | void manager_enumerate(Manager *m); |
a16e1123 | 315 | int manager_startup(Manager *m, FILE *serialization, FDSet *fds); |
f50e0a01 | 316 | |
60918275 | 317 | Job *manager_get_job(Manager *m, uint32_t id); |
87f0e418 | 318 | Unit *manager_get_unit(Manager *m, const char *name); |
60918275 | 319 | |
86fbf370 | 320 | int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j); |
ea430986 | 321 | |
718db961 LP |
322 | int manager_load_unit_prepare(Manager *m, const char *name, const char *path, sd_bus_error *e, Unit **_ret); |
323 | int manager_load_unit(Manager *m, const char *name, const char *path, sd_bus_error *e, Unit **_ret); | |
324 | int manager_load_unit_from_dbus_path(Manager *m, const char *s, sd_bus_error *e, Unit **_u); | |
28247076 | 325 | |
4bd29fe5 LP |
326 | int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, sd_bus_error *e, Job **_ret); |
327 | int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, sd_bus_error *e, Job **_ret); | |
53f18416 | 328 | int manager_add_job_by_name_and_warn(Manager *m, JobType type, const char *name, JobMode mode, Job **ret); |
60918275 | 329 | |
87f0e418 | 330 | void manager_dump_units(Manager *s, FILE *f, const char *prefix); |
cea8e32e | 331 | void manager_dump_jobs(Manager *s, FILE *f, const char *prefix); |
a66d02c3 | 332 | |
7fad411c LP |
333 | void manager_clear_jobs(Manager *m); |
334 | ||
c1e1601e | 335 | unsigned manager_dispatch_load_queue(Manager *m); |
f50e0a01 | 336 | |
718db961 | 337 | int manager_environment_add(Manager *m, char **minus, char **plus); |
c93ff2e9 | 338 | int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit); |
b2bb3dbe | 339 | |
9152c765 | 340 | int manager_loop(Manager *m); |
83c60c9f | 341 | |
d8d5ab98 | 342 | int manager_open_serialization(Manager *m, FILE **_f); |
a16e1123 | 343 | |
b3680f49 | 344 | int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root); |
a16e1123 LP |
345 | int manager_deserialize(Manager *m, FILE *f, FDSet *fds); |
346 | ||
347 | int manager_reload(Manager *m); | |
348 | ||
fdf20a31 | 349 | void manager_reset_failed(Manager *m); |
5632e374 | 350 | |
4927fcae | 351 | void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success); |
e983b760 | 352 | void manager_send_unit_plymouth(Manager *m, Unit *u); |
4927fcae | 353 | |
31afa0a4 | 354 | bool manager_unit_inactive_or_pending(Manager *m, const char *name); |
8f6df3fa | 355 | |
b0c918b9 LP |
356 | void manager_check_finished(Manager *m); |
357 | ||
4cfa2c99 | 358 | void manager_recheck_journal(Manager *m); |
f1dd0c3f | 359 | |
d450b6f2 | 360 | void manager_set_show_status(Manager *m, ShowStatus mode); |
e2680723 LP |
361 | void manager_set_first_boot(Manager *m, bool b); |
362 | ||
127d5fd1 | 363 | void manager_status_printf(Manager *m, StatusType type, const char *status, const char *format, ...) _printf_(4,5); |
cb8ccb22 | 364 | void manager_flip_auto_status(Manager *m, bool enable); |
68b29a9f | 365 | |
a57f7e2c | 366 | Set *manager_get_units_requiring_mounts_for(Manager *m, const char *path); |
e66cf1a3 LP |
367 | |
368 | const char *manager_get_runtime_prefix(Manager *m); | |
f755e3b7 LP |
369 | |
370 | ManagerState manager_state(Manager *m); | |
371 | ||
5269eb6b | 372 | int manager_update_failed_units(Manager *m, Unit *u, bool failed); |
03455c28 | 373 | |
f755e3b7 LP |
374 | const char *manager_state_to_string(ManagerState m) _const_; |
375 | ManagerState manager_state_from_string(const char *s) _pure_; |