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