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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 LP |
27 | #include <dbus/dbus.h> |
28 | ||
a16e1123 | 29 | #include "fdset.h" |
4ad49000 | 30 | #include "cgroup-util.h" |
a16e1123 | 31 | |
4f0f902f | 32 | /* Enforce upper limit how many names we allow */ |
59d1a833 | 33 | #define MANAGER_MAX_NAMES 131072 /* 128K */ |
4f0f902f | 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, | |
b9080b03 FF |
44 | MANAGER_REBOOT, |
45 | MANAGER_POWEROFF, | |
46 | MANAGER_HALT, | |
47 | MANAGER_KEXEC, | |
664f88a7 | 48 | MANAGER_SWITCH_ROOT, |
a16e1123 LP |
49 | _MANAGER_EXIT_CODE_MAX, |
50 | _MANAGER_EXIT_CODE_INVALID = -1 | |
51 | } ManagerExitCode; | |
52 | ||
acbb0225 LP |
53 | enum WatchType { |
54 | WATCH_INVALID, | |
ef734fd6 | 55 | WATCH_SIGNAL, |
8c47c732 | 56 | WATCH_NOTIFY, |
acbb0225 | 57 | WATCH_FD, |
faf919f1 LP |
58 | WATCH_UNIT_TIMER, |
59 | WATCH_JOB_TIMER, | |
f94ea366 | 60 | WATCH_MOUNT, |
4e434314 | 61 | WATCH_SWAP, |
ea430986 LP |
62 | WATCH_UDEV, |
63 | WATCH_DBUS_WATCH, | |
8742514c | 64 | WATCH_DBUS_TIMEOUT, |
03b717a3 | 65 | WATCH_TIME_CHANGE, |
31a7eb86 ZJS |
66 | WATCH_JOBS_IN_PROGRESS, |
67 | WATCH_IDLE_PIPE, | |
acbb0225 LP |
68 | }; |
69 | ||
70 | struct Watch { | |
71 | int fd; | |
72 | WatchType type; | |
ea430986 | 73 | union { |
ac155bb8 | 74 | struct Unit *unit; |
faf919f1 | 75 | struct Job *job; |
ea430986 LP |
76 | DBusWatch *bus_watch; |
77 | DBusTimeout *bus_timeout; | |
78 | } data; | |
cabab516 LP |
79 | bool fd_is_dupped:1; |
80 | bool socket_accept:1; | |
acbb0225 | 81 | }; |
60918275 | 82 | |
87f0e418 | 83 | #include "unit.h" |
60918275 LP |
84 | #include "job.h" |
85 | #include "hashmap.h" | |
86 | #include "list.h" | |
87 | #include "set.h" | |
ea430986 | 88 | #include "dbus.h" |
84e3543e | 89 | #include "path-lookup.h" |
c17ec25e | 90 | #include "execute.h" |
4ad49000 | 91 | #include "unit-name.h" |
60918275 LP |
92 | |
93 | struct Manager { | |
87f0e418 | 94 | /* Note that the set of units we know of is allowed to be |
35b8ca3a | 95 | * inconsistent. However the subset of it that is loaded may |
87d1515d LP |
96 | * not, and the list of jobs may neither. */ |
97 | ||
87f0e418 LP |
98 | /* Active jobs and units */ |
99 | Hashmap *units; /* name string => Unit object n:1 */ | |
60918275 LP |
100 | Hashmap *jobs; /* job id => Job object 1:1 */ |
101 | ||
ef734fd6 LP |
102 | /* To make it easy to iterate through the units of a specific |
103 | * type we maintain a per type linked list */ | |
ac155bb8 | 104 | LIST_HEAD(Unit, units_by_type[_UNIT_TYPE_MAX]); |
ef734fd6 | 105 | |
7c8fa05c LP |
106 | /* To optimize iteration of units that have requires_mounts_for set */ |
107 | LIST_HEAD(Unit, has_requires_mounts_for); | |
108 | ||
87f0e418 | 109 | /* Units that need to be loaded */ |
ac155bb8 | 110 | LIST_HEAD(Unit, load_queue); /* this is actually more a stack than a queue, but uh. */ |
60918275 | 111 | |
034c6ed7 LP |
112 | /* Jobs that need to be run */ |
113 | LIST_HEAD(Job, run_queue); /* more a stack than a queue, too */ | |
114 | ||
c1e1601e LP |
115 | /* Units and jobs that have not yet been announced via |
116 | * D-Bus. When something about a job changes it is added here | |
117 | * if it is not in there yet. This allows easy coalescing of | |
118 | * D-Bus change signals. */ | |
ac155bb8 | 119 | LIST_HEAD(Unit, dbus_unit_queue); |
c1e1601e LP |
120 | LIST_HEAD(Job, dbus_job_queue); |
121 | ||
701cc384 | 122 | /* Units to remove */ |
ac155bb8 | 123 | LIST_HEAD(Unit, cleanup_queue); |
23a177ef | 124 | |
701cc384 | 125 | /* Units to check when doing GC */ |
ac155bb8 | 126 | LIST_HEAD(Unit, gc_queue); |
701cc384 | 127 | |
4ad49000 LP |
128 | /* Units that should be realized */ |
129 | LIST_HEAD(Unit, cgroup_queue); | |
130 | ||
87f0e418 | 131 | Hashmap *watch_pids; /* pid => Unit object n:1 */ |
9152c765 | 132 | |
c952c6ec LP |
133 | char *notify_socket; |
134 | ||
8c47c732 | 135 | Watch notify_watch; |
9d58f1db | 136 | Watch signal_watch; |
8742514c | 137 | Watch time_change_watch; |
03b717a3 | 138 | Watch jobs_in_progress_watch; |
31a7eb86 | 139 | Watch idle_pipe_watch; |
9d58f1db | 140 | |
9152c765 | 141 | int epoll_fd; |
acbb0225 | 142 | |
9d58f1db | 143 | unsigned n_snapshots; |
ce578209 | 144 | |
84e3543e | 145 | LookupPaths lookup_paths; |
fe51822e | 146 | Set *unit_path_cache; |
036643a2 | 147 | |
1137a57c LP |
148 | char **environment; |
149 | ||
e96d6be7 LP |
150 | usec_t runtime_watchdog; |
151 | usec_t shutdown_watchdog; | |
152 | ||
915b3753 LP |
153 | dual_timestamp firmware_timestamp; |
154 | dual_timestamp loader_timestamp; | |
155 | dual_timestamp kernel_timestamp; | |
e9ddabc2 | 156 | dual_timestamp initrd_timestamp; |
915b3753 | 157 | dual_timestamp userspace_timestamp; |
b0c918b9 | 158 | dual_timestamp finish_timestamp; |
518d10e9 UTL |
159 | dual_timestamp generators_start_timestamp; |
160 | dual_timestamp generators_finish_timestamp; | |
d9acfb71 TA |
161 | dual_timestamp unitsload_start_timestamp; |
162 | dual_timestamp unitsload_finish_timestamp; | |
8d567588 | 163 | |
5a1e9937 | 164 | char *generator_unit_path; |
07719a21 LP |
165 | char *generator_unit_path_early; |
166 | char *generator_unit_path_late; | |
b2bb3dbe | 167 | |
ef734fd6 | 168 | /* Data specific to the device subsystem */ |
25ac040b | 169 | struct udev* udev; |
f94ea366 LP |
170 | struct udev_monitor* udev_monitor; |
171 | Watch udev_watch; | |
8fe914ec | 172 | Hashmap *devices_by_sysfs; |
ef734fd6 LP |
173 | |
174 | /* Data specific to the mount subsystem */ | |
175 | FILE *proc_self_mountinfo; | |
176 | Watch mount_watch; | |
ea430986 | 177 | |
07b0b134 ML |
178 | /* Data specific to the swap filesystem */ |
179 | FILE *proc_swaps; | |
e04aad61 LP |
180 | Hashmap *swaps_by_proc_swaps; |
181 | bool request_reload; | |
4e434314 | 182 | Watch swap_watch; |
07b0b134 | 183 | |
ea430986 | 184 | /* Data specific to the D-Bus subsystem */ |
f278026d | 185 | DBusConnection *api_bus, *system_bus; |
5e8d1c9a LP |
186 | DBusServer *private_bus; |
187 | Set *bus_connections, *bus_connections_for_dispatch; | |
188 | ||
a16e1123 LP |
189 | DBusMessage *queued_message; /* This is used during reloading: |
190 | * before the reload we queue the | |
191 | * reply message here, and | |
192 | * afterwards we send it */ | |
7b97f477 | 193 | DBusConnection *queued_message_connection; /* The connection to send the queued message on */ |
8e274523 | 194 | |
05e343b7 LP |
195 | Hashmap *watch_bus; /* D-Bus names => Unit object n:1 */ |
196 | int32_t name_data_slot; | |
cbd37330 | 197 | int32_t conn_data_slot; |
a567261a | 198 | int32_t subscribed_data_slot; |
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 LP |
224 | bool dispatching_load_queue:1; |
225 | bool dispatching_run_queue:1; | |
226 | bool dispatching_dbus_queue:1; | |
227 | ||
72bc8d00 LP |
228 | bool taint_usr:1; |
229 | ||
9e58ff9c | 230 | bool show_status; |
f295f5c0 | 231 | bool confirm_spawn; |
31a7eb86 | 232 | bool no_console_output; |
d3689161 | 233 | |
0a494f1f LP |
234 | ExecOutput default_std_output, default_std_error; |
235 | ||
c93ff2e9 FC |
236 | struct rlimit *rlimit[RLIMIT_NLIMITS]; |
237 | ||
a7556052 LP |
238 | /* non-zero if we are reloading or reexecuting, */ |
239 | int n_reloading; | |
e409f875 LP |
240 | |
241 | unsigned n_installed_jobs; | |
76bf48b7 | 242 | unsigned n_failed_jobs; |
f2b68789 | 243 | |
03b717a3 | 244 | /* Jobs in progress watching */ |
637f8b8e | 245 | unsigned n_running_jobs; |
7ed9f6cd | 246 | unsigned n_on_console; |
03b717a3 | 247 | unsigned jobs_in_progress_iteration; |
637f8b8e | 248 | |
f2b68789 | 249 | /* Type=idle pipes */ |
31a7eb86 | 250 | int idle_pipe[4]; |
664f88a7 LP |
251 | |
252 | char *switch_root; | |
253 | char *switch_root_init; | |
60918275 LP |
254 | }; |
255 | ||
6fa48533 | 256 | int manager_new(SystemdRunningAs running_as, bool reexecuting, Manager **m); |
60918275 LP |
257 | void manager_free(Manager *m); |
258 | ||
a16e1123 | 259 | int manager_enumerate(Manager *m); |
f50e0a01 | 260 | int manager_coldplug(Manager *m); |
a16e1123 | 261 | int manager_startup(Manager *m, FILE *serialization, FDSet *fds); |
f50e0a01 | 262 | |
60918275 | 263 | Job *manager_get_job(Manager *m, uint32_t id); |
87f0e418 | 264 | Unit *manager_get_unit(Manager *m, const char *name); |
60918275 | 265 | |
86fbf370 | 266 | int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j); |
ea430986 | 267 | |
398ef8ba LP |
268 | int manager_load_unit_prepare(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret); |
269 | int manager_load_unit(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret); | |
80fbf05e | 270 | int manager_load_unit_from_dbus_path(Manager *m, const char *s, DBusError *e, Unit **_u); |
28247076 | 271 | |
398ef8ba LP |
272 | int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool force, DBusError *e, Job **_ret); |
273 | int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool force, DBusError *e, Job **_ret); | |
60918275 | 274 | |
87f0e418 | 275 | void manager_dump_units(Manager *s, FILE *f, const char *prefix); |
cea8e32e | 276 | void manager_dump_jobs(Manager *s, FILE *f, const char *prefix); |
a66d02c3 | 277 | |
7fad411c LP |
278 | void manager_clear_jobs(Manager *m); |
279 | ||
c1e1601e LP |
280 | unsigned manager_dispatch_load_queue(Manager *m); |
281 | unsigned manager_dispatch_run_queue(Manager *m); | |
282 | unsigned manager_dispatch_dbus_queue(Manager *m); | |
f50e0a01 | 283 | |
e21fea24 | 284 | int manager_environment_add(Manager *m, char **environment); |
c93ff2e9 | 285 | int manager_set_default_rlimits(Manager *m, struct rlimit **default_rlimit); |
b2bb3dbe | 286 | |
9152c765 | 287 | int manager_loop(Manager *m); |
83c60c9f | 288 | |
05e343b7 LP |
289 | void manager_dispatch_bus_name_owner_changed(Manager *m, const char *name, const char* old_owner, const char *new_owner); |
290 | void manager_dispatch_bus_query_pid_done(Manager *m, const char *name, pid_t pid); | |
291 | ||
d8d5ab98 | 292 | int manager_open_serialization(Manager *m, FILE **_f); |
a16e1123 | 293 | |
b3680f49 | 294 | int manager_serialize(Manager *m, FILE *f, FDSet *fds, bool switching_root); |
a16e1123 | 295 | int manager_deserialize(Manager *m, FILE *f, FDSet *fds); |
01e10de3 | 296 | int manager_distribute_fds(Manager *m, FDSet *fds); |
a16e1123 LP |
297 | |
298 | int manager_reload(Manager *m); | |
299 | ||
44a6b1b6 | 300 | bool manager_is_reloading_or_reexecuting(Manager *m) _pure_; |
c17ec25e | 301 | |
fdf20a31 | 302 | void manager_reset_failed(Manager *m); |
5632e374 | 303 | |
4927fcae | 304 | void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success); |
e983b760 | 305 | void manager_send_unit_plymouth(Manager *m, Unit *u); |
4927fcae | 306 | |
31afa0a4 | 307 | bool manager_unit_inactive_or_pending(Manager *m, const char *name); |
8f6df3fa | 308 | |
b0c918b9 LP |
309 | void manager_check_finished(Manager *m); |
310 | ||
5a1e9937 LP |
311 | void manager_run_generators(Manager *m); |
312 | void manager_undo_generators(Manager *m); | |
313 | ||
4cfa2c99 | 314 | void manager_recheck_journal(Manager *m); |
f1dd0c3f | 315 | |
27d340c7 | 316 | void manager_set_show_status(Manager *m, bool b); |
b1e2b33c | 317 | void manager_status_printf(Manager *m, bool ephemeral, const char *status, const char *format, ...) _printf_attr_(4,5); |
68b29a9f LP |
318 | |
319 | void watch_init(Watch *w); |