]>
Commit | Line | Data |
---|---|---|
d6c9574f | 1 | /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/ |
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 | |
9 | under the terms of the GNU General Public License as published by | |
10 | the Free Software Foundation; either version 2 of the License, or | |
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 | |
16 | General Public License for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
19 | along with systemd; If not, see <http://www.gnu.org/licenses/>. | |
20 | ***/ | |
21 | ||
60918275 LP |
22 | #include <assert.h> |
23 | #include <errno.h> | |
87d1515d | 24 | #include <string.h> |
9152c765 LP |
25 | #include <sys/epoll.h> |
26 | #include <signal.h> | |
27 | #include <sys/signalfd.h> | |
28 | #include <sys/wait.h> | |
29 | #include <unistd.h> | |
30 | #include <sys/poll.h> | |
e1414003 LP |
31 | #include <sys/reboot.h> |
32 | #include <sys/ioctl.h> | |
33 | #include <linux/kd.h> | |
80876c20 LP |
34 | #include <termios.h> |
35 | #include <fcntl.h> | |
a16e1123 LP |
36 | #include <sys/types.h> |
37 | #include <sys/stat.h> | |
fe51822e | 38 | #include <dirent.h> |
830f6caa LP |
39 | |
40 | #ifdef HAVE_AUDIT | |
4927fcae | 41 | #include <libaudit.h> |
830f6caa | 42 | #endif |
60918275 LP |
43 | |
44 | #include "manager.h" | |
45 | #include "hashmap.h" | |
46 | #include "macro.h" | |
47 | #include "strv.h" | |
16354eff | 48 | #include "log.h" |
2a987ee8 | 49 | #include "util.h" |
ea430986 | 50 | #include "ratelimit.h" |
8e274523 LP |
51 | #include "cgroup.h" |
52 | #include "mount-setup.h" | |
9e2f7c11 | 53 | #include "unit-name.h" |
4139c1b2 LP |
54 | #include "dbus-unit.h" |
55 | #include "dbus-job.h" | |
1137a57c | 56 | #include "missing.h" |
84e3543e | 57 | #include "path-lookup.h" |
514f4ef5 | 58 | #include "special.h" |
398ef8ba | 59 | #include "bus-errors.h" |
d06dacd0 | 60 | #include "exit-status.h" |
530345e7 | 61 | #include "sd-daemon.h" |
60918275 | 62 | |
701cc384 LP |
63 | /* As soon as 16 units are in our GC queue, make sure to run a gc sweep */ |
64 | #define GC_QUEUE_ENTRIES_MAX 16 | |
65 | ||
66 | /* As soon as 5s passed since a unit was added to our GC queue, make sure to run a gc sweep */ | |
94b6dfa2 | 67 | #define GC_QUEUE_USEC_MAX (10*USEC_PER_SEC) |
701cc384 | 68 | |
8c47c732 | 69 | /* Where clients shall send notification messages to */ |
2b583ce6 | 70 | #define NOTIFY_SOCKET_SYSTEM "/run/systemd/notify" |
91b22f21 | 71 | #define NOTIFY_SOCKET_USER "@/org/freedesktop/systemd1/notify" |
8c47c732 LP |
72 | |
73 | static int manager_setup_notify(Manager *m) { | |
74 | union { | |
75 | struct sockaddr sa; | |
76 | struct sockaddr_un un; | |
77 | } sa; | |
78 | struct epoll_event ev; | |
8c47c732 LP |
79 | int one = 1; |
80 | ||
81 | assert(m); | |
82 | ||
83 | m->notify_watch.type = WATCH_NOTIFY; | |
84 | if ((m->notify_watch.fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0)) < 0) { | |
85 | log_error("Failed to allocate notification socket: %m"); | |
86 | return -errno; | |
87 | } | |
88 | ||
89 | zero(sa); | |
90 | sa.sa.sa_family = AF_UNIX; | |
91 | ||
a821caaa | 92 | if (getpid() != 1) |
91b22f21 | 93 | snprintf(sa.un.sun_path, sizeof(sa.un.sun_path), NOTIFY_SOCKET_USER "/%llu", random_ull()); |
6f79c579 LP |
94 | else { |
95 | unlink(NOTIFY_SOCKET_SYSTEM); | |
91b22f21 | 96 | strncpy(sa.un.sun_path, NOTIFY_SOCKET_SYSTEM, sizeof(sa.un.sun_path)); |
6f79c579 | 97 | } |
91b22f21 LP |
98 | |
99 | if (sa.un.sun_path[0] == '@') | |
100 | sa.un.sun_path[0] = 0; | |
8c47c732 | 101 | |
0e098b15 | 102 | if (bind(m->notify_watch.fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) { |
8c47c732 LP |
103 | log_error("bind() failed: %m"); |
104 | return -errno; | |
105 | } | |
106 | ||
107 | if (setsockopt(m->notify_watch.fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)) < 0) { | |
108 | log_error("SO_PASSCRED failed: %m"); | |
109 | return -errno; | |
110 | } | |
111 | ||
112 | zero(ev); | |
113 | ev.events = EPOLLIN; | |
114 | ev.data.ptr = &m->notify_watch; | |
115 | ||
116 | if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->notify_watch.fd, &ev) < 0) | |
117 | return -errno; | |
118 | ||
91b22f21 LP |
119 | if (sa.un.sun_path[0] == 0) |
120 | sa.un.sun_path[0] = '@'; | |
121 | ||
122 | if (!(m->notify_socket = strdup(sa.un.sun_path))) | |
8c47c732 LP |
123 | return -ENOMEM; |
124 | ||
b2bb3dbe LP |
125 | log_debug("Using notification socket %s", m->notify_socket); |
126 | ||
8c47c732 LP |
127 | return 0; |
128 | } | |
129 | ||
80876c20 | 130 | static int enable_special_signals(Manager *m) { |
4466ee6a | 131 | int fd; |
80876c20 LP |
132 | |
133 | assert(m); | |
134 | ||
135 | /* Enable that we get SIGINT on control-alt-del */ | |
136 | if (reboot(RB_DISABLE_CAD) < 0) | |
137 | log_warning("Failed to enable ctrl-alt-del handling: %m"); | |
138 | ||
ccaa6149 | 139 | if ((fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC)) < 0) |
80876c20 LP |
140 | log_warning("Failed to open /dev/tty0: %m"); |
141 | else { | |
142 | /* Enable that we get SIGWINCH on kbrequest */ | |
143 | if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0) | |
144 | log_warning("Failed to enable kbrequest handling: %s", strerror(errno)); | |
145 | ||
146 | close_nointr_nofail(fd); | |
147 | } | |
148 | ||
149 | return 0; | |
150 | } | |
151 | ||
ce578209 | 152 | static int manager_setup_signals(Manager *m) { |
9152c765 LP |
153 | sigset_t mask; |
154 | struct epoll_event ev; | |
57c0c30e | 155 | struct sigaction sa; |
60918275 | 156 | |
ce578209 LP |
157 | assert(m); |
158 | ||
57c0c30e LP |
159 | /* We are not interested in SIGSTOP and friends. */ |
160 | zero(sa); | |
161 | sa.sa_handler = SIG_DFL; | |
162 | sa.sa_flags = SA_NOCLDSTOP|SA_RESTART; | |
163 | assert_se(sigaction(SIGCHLD, &sa, NULL) == 0); | |
164 | ||
ce578209 | 165 | assert_se(sigemptyset(&mask) == 0); |
7d793605 LP |
166 | |
167 | sigset_add_many(&mask, | |
168 | SIGCHLD, /* Child died */ | |
169 | SIGTERM, /* Reexecute daemon */ | |
170 | SIGHUP, /* Reload configuration */ | |
171 | SIGUSR1, /* systemd/upstart: reconnect to D-Bus */ | |
172 | SIGUSR2, /* systemd: dump status */ | |
173 | SIGINT, /* Kernel sends us this on control-alt-del */ | |
174 | SIGWINCH, /* Kernel sends us this on kbrequest (alt-arrowup) */ | |
175 | SIGPWR, /* Some kernel drivers and upsd send us this on power failure */ | |
176 | SIGRTMIN+0, /* systemd: start default.target */ | |
0003d1ab | 177 | SIGRTMIN+1, /* systemd: isolate rescue.target */ |
7d793605 LP |
178 | SIGRTMIN+2, /* systemd: isolate emergency.target */ |
179 | SIGRTMIN+3, /* systemd: start halt.target */ | |
180 | SIGRTMIN+4, /* systemd: start poweroff.target */ | |
181 | SIGRTMIN+5, /* systemd: start reboot.target */ | |
0003d1ab LP |
182 | SIGRTMIN+6, /* systemd: start kexec.target */ |
183 | SIGRTMIN+13, /* systemd: Immediate halt */ | |
184 | SIGRTMIN+14, /* systemd: Immediate poweroff */ | |
185 | SIGRTMIN+15, /* systemd: Immediate reboot */ | |
186 | SIGRTMIN+16, /* systemd: Immediate kexec */ | |
0658666b LP |
187 | SIGRTMIN+20, /* systemd: enable status messages */ |
188 | SIGRTMIN+21, /* systemd: disable status messages */ | |
7d793605 | 189 | -1); |
ce578209 LP |
190 | assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0); |
191 | ||
ef734fd6 | 192 | m->signal_watch.type = WATCH_SIGNAL; |
ce578209 LP |
193 | if ((m->signal_watch.fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC)) < 0) |
194 | return -errno; | |
195 | ||
196 | zero(ev); | |
197 | ev.events = EPOLLIN; | |
198 | ev.data.ptr = &m->signal_watch; | |
199 | ||
200 | if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->signal_watch.fd, &ev) < 0) | |
201 | return -errno; | |
202 | ||
a3d4e06d | 203 | if (m->running_as == MANAGER_SYSTEM) |
80876c20 | 204 | return enable_special_signals(m); |
e1414003 | 205 | |
ce578209 LP |
206 | return 0; |
207 | } | |
208 | ||
9e58ff9c | 209 | int manager_new(ManagerRunningAs running_as, Manager **_m) { |
ce578209 | 210 | Manager *m; |
8e274523 LP |
211 | int r = -ENOMEM; |
212 | ||
213 | assert(_m); | |
a5dab5ce LP |
214 | assert(running_as >= 0); |
215 | assert(running_as < _MANAGER_RUNNING_AS_MAX); | |
ce578209 | 216 | |
60918275 | 217 | if (!(m = new0(Manager, 1))) |
8e274523 | 218 | return -ENOMEM; |
60918275 | 219 | |
63983207 | 220 | dual_timestamp_get(&m->startup_timestamp); |
e537352b | 221 | |
a5dab5ce | 222 | m->running_as = running_as; |
a567261a | 223 | m->name_data_slot = m->subscribed_data_slot = -1; |
a16e1123 | 224 | m->exit_code = _MANAGER_EXIT_CODE_INVALID; |
33be102a | 225 | m->pin_cgroupfs_fd = -1; |
80876c20 | 226 | |
4927fcae LP |
227 | #ifdef HAVE_AUDIT |
228 | m->audit_fd = -1; | |
229 | #endif | |
230 | ||
4e434314 | 231 | m->signal_watch.fd = m->mount_watch.fd = m->udev_watch.fd = m->epoll_fd = m->dev_autofs_fd = m->swap_watch.fd = -1; |
ea430986 | 232 | m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */ |
9152c765 | 233 | |
1137a57c LP |
234 | if (!(m->environment = strv_copy(environ))) |
235 | goto fail; | |
236 | ||
06d4c99a LP |
237 | if (!(m->default_controllers = strv_new("cpu", NULL))) |
238 | goto fail; | |
239 | ||
87f0e418 | 240 | if (!(m->units = hashmap_new(string_hash_func, string_compare_func))) |
60918275 LP |
241 | goto fail; |
242 | ||
243 | if (!(m->jobs = hashmap_new(trivial_hash_func, trivial_compare_func))) | |
244 | goto fail; | |
245 | ||
e5b5ae50 | 246 | if (!(m->transaction_jobs = hashmap_new(trivial_hash_func, trivial_compare_func))) |
60918275 LP |
247 | goto fail; |
248 | ||
9152c765 LP |
249 | if (!(m->watch_pids = hashmap_new(trivial_hash_func, trivial_compare_func))) |
250 | goto fail; | |
251 | ||
8e274523 LP |
252 | if (!(m->cgroup_bondings = hashmap_new(string_hash_func, string_compare_func))) |
253 | goto fail; | |
254 | ||
05e343b7 LP |
255 | if (!(m->watch_bus = hashmap_new(string_hash_func, string_compare_func))) |
256 | goto fail; | |
257 | ||
9152c765 LP |
258 | if ((m->epoll_fd = epoll_create1(EPOLL_CLOEXEC)) < 0) |
259 | goto fail; | |
260 | ||
84e3543e | 261 | if ((r = lookup_paths_init(&m->lookup_paths, m->running_as)) < 0) |
e1414003 LP |
262 | goto fail; |
263 | ||
8e274523 LP |
264 | if ((r = manager_setup_signals(m)) < 0) |
265 | goto fail; | |
266 | ||
8e274523 | 267 | if ((r = manager_setup_cgroup(m)) < 0) |
9152c765 LP |
268 | goto fail; |
269 | ||
8c47c732 LP |
270 | if ((r = manager_setup_notify(m)) < 0) |
271 | goto fail; | |
272 | ||
f278026d | 273 | /* Try to connect to the busses, if possible. */ |
3996fbe2 | 274 | if ((r = bus_init(m, running_as != MANAGER_SYSTEM)) < 0) |
ea430986 LP |
275 | goto fail; |
276 | ||
e543deae | 277 | #ifdef HAVE_AUDIT |
4927fcae LP |
278 | if ((m->audit_fd = audit_open()) < 0) |
279 | log_error("Failed to connect to audit log: %m"); | |
e543deae | 280 | #endif |
4927fcae | 281 | |
72bc8d00 LP |
282 | m->taint_usr = dir_is_empty("/usr") > 0; |
283 | ||
8e274523 LP |
284 | *_m = m; |
285 | return 0; | |
60918275 LP |
286 | |
287 | fail: | |
288 | manager_free(m); | |
8e274523 | 289 | return r; |
60918275 LP |
290 | } |
291 | ||
23a177ef LP |
292 | static unsigned manager_dispatch_cleanup_queue(Manager *m) { |
293 | Meta *meta; | |
294 | unsigned n = 0; | |
295 | ||
296 | assert(m); | |
297 | ||
298 | while ((meta = m->cleanup_queue)) { | |
299 | assert(meta->in_cleanup_queue); | |
300 | ||
399ab2b1 | 301 | unit_free((Unit*) meta); |
23a177ef LP |
302 | n++; |
303 | } | |
304 | ||
305 | return n; | |
306 | } | |
307 | ||
eced69b3 | 308 | enum { |
35b8ca3a | 309 | GC_OFFSET_IN_PATH, /* This one is on the path we were traveling */ |
eced69b3 LP |
310 | GC_OFFSET_UNSURE, /* No clue */ |
311 | GC_OFFSET_GOOD, /* We still need this unit */ | |
312 | GC_OFFSET_BAD, /* We don't need this unit anymore */ | |
313 | _GC_OFFSET_MAX | |
314 | }; | |
315 | ||
316 | static void unit_gc_sweep(Unit *u, unsigned gc_marker) { | |
701cc384 LP |
317 | Iterator i; |
318 | Unit *other; | |
eced69b3 | 319 | bool is_bad; |
701cc384 LP |
320 | |
321 | assert(u); | |
322 | ||
eced69b3 LP |
323 | if (u->meta.gc_marker == gc_marker + GC_OFFSET_GOOD || |
324 | u->meta.gc_marker == gc_marker + GC_OFFSET_BAD || | |
325 | u->meta.gc_marker == gc_marker + GC_OFFSET_IN_PATH) | |
701cc384 LP |
326 | return; |
327 | ||
c9c0cadb | 328 | if (u->meta.in_cleanup_queue) |
701cc384 LP |
329 | goto bad; |
330 | ||
331 | if (unit_check_gc(u)) | |
332 | goto good; | |
333 | ||
eced69b3 LP |
334 | u->meta.gc_marker = gc_marker + GC_OFFSET_IN_PATH; |
335 | ||
336 | is_bad = true; | |
337 | ||
701cc384 LP |
338 | SET_FOREACH(other, u->meta.dependencies[UNIT_REFERENCED_BY], i) { |
339 | unit_gc_sweep(other, gc_marker); | |
340 | ||
eced69b3 | 341 | if (other->meta.gc_marker == gc_marker + GC_OFFSET_GOOD) |
701cc384 | 342 | goto good; |
eced69b3 LP |
343 | |
344 | if (other->meta.gc_marker != gc_marker + GC_OFFSET_BAD) | |
345 | is_bad = false; | |
701cc384 LP |
346 | } |
347 | ||
eced69b3 LP |
348 | if (is_bad) |
349 | goto bad; | |
350 | ||
351 | /* We were unable to find anything out about this entry, so | |
352 | * let's investigate it later */ | |
353 | u->meta.gc_marker = gc_marker + GC_OFFSET_UNSURE; | |
354 | unit_add_to_gc_queue(u); | |
355 | return; | |
356 | ||
701cc384 | 357 | bad: |
eced69b3 LP |
358 | /* We definitely know that this one is not useful anymore, so |
359 | * let's mark it for deletion */ | |
360 | u->meta.gc_marker = gc_marker + GC_OFFSET_BAD; | |
361 | unit_add_to_cleanup_queue(u); | |
701cc384 LP |
362 | return; |
363 | ||
364 | good: | |
eced69b3 | 365 | u->meta.gc_marker = gc_marker + GC_OFFSET_GOOD; |
701cc384 LP |
366 | } |
367 | ||
368 | static unsigned manager_dispatch_gc_queue(Manager *m) { | |
369 | Meta *meta; | |
370 | unsigned n = 0; | |
eced69b3 | 371 | unsigned gc_marker; |
701cc384 LP |
372 | |
373 | assert(m); | |
374 | ||
375 | if ((m->n_in_gc_queue < GC_QUEUE_ENTRIES_MAX) && | |
376 | (m->gc_queue_timestamp <= 0 || | |
377 | (m->gc_queue_timestamp + GC_QUEUE_USEC_MAX) > now(CLOCK_MONOTONIC))) | |
378 | return 0; | |
379 | ||
380 | log_debug("Running GC..."); | |
381 | ||
eced69b3 LP |
382 | m->gc_marker += _GC_OFFSET_MAX; |
383 | if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX) | |
c9c0cadb | 384 | m->gc_marker = 1; |
701cc384 | 385 | |
eced69b3 LP |
386 | gc_marker = m->gc_marker; |
387 | ||
701cc384 LP |
388 | while ((meta = m->gc_queue)) { |
389 | assert(meta->in_gc_queue); | |
390 | ||
399ab2b1 | 391 | unit_gc_sweep((Unit*) meta, gc_marker); |
eced69b3 | 392 | |
701cc384 LP |
393 | LIST_REMOVE(Meta, gc_queue, m->gc_queue, meta); |
394 | meta->in_gc_queue = false; | |
395 | ||
396 | n++; | |
397 | ||
eced69b3 LP |
398 | if (meta->gc_marker == gc_marker + GC_OFFSET_BAD || |
399 | meta->gc_marker == gc_marker + GC_OFFSET_UNSURE) { | |
701cc384 | 400 | log_debug("Collecting %s", meta->id); |
eced69b3 | 401 | meta->gc_marker = gc_marker + GC_OFFSET_BAD; |
399ab2b1 | 402 | unit_add_to_cleanup_queue((Unit*) meta); |
701cc384 LP |
403 | } |
404 | } | |
405 | ||
406 | m->n_in_gc_queue = 0; | |
407 | m->gc_queue_timestamp = 0; | |
408 | ||
409 | return n; | |
410 | } | |
411 | ||
a16e1123 | 412 | static void manager_clear_jobs_and_units(Manager *m) { |
e5b5ae50 | 413 | Job *j; |
a16e1123 | 414 | Unit *u; |
60918275 LP |
415 | |
416 | assert(m); | |
417 | ||
87f0e418 | 418 | while ((j = hashmap_first(m->transaction_jobs))) |
e5b5ae50 LP |
419 | job_free(j); |
420 | ||
87f0e418 LP |
421 | while ((u = hashmap_first(m->units))) |
422 | unit_free(u); | |
964e0949 LP |
423 | |
424 | manager_dispatch_cleanup_queue(m); | |
425 | ||
426 | assert(!m->load_queue); | |
427 | assert(!m->run_queue); | |
428 | assert(!m->dbus_unit_queue); | |
429 | assert(!m->dbus_job_queue); | |
430 | assert(!m->cleanup_queue); | |
431 | assert(!m->gc_queue); | |
432 | ||
433 | assert(hashmap_isempty(m->transaction_jobs)); | |
434 | assert(hashmap_isempty(m->jobs)); | |
435 | assert(hashmap_isempty(m->units)); | |
a16e1123 LP |
436 | } |
437 | ||
438 | void manager_free(Manager *m) { | |
439 | UnitType c; | |
87f0e418 | 440 | |
a16e1123 LP |
441 | assert(m); |
442 | ||
443 | manager_clear_jobs_and_units(m); | |
23a177ef | 444 | |
7824bbeb LP |
445 | for (c = 0; c < _UNIT_TYPE_MAX; c++) |
446 | if (unit_vtable[c]->shutdown) | |
447 | unit_vtable[c]->shutdown(m); | |
448 | ||
a16e1123 LP |
449 | /* If we reexecute ourselves, we keep the root cgroup |
450 | * around */ | |
c6c18be3 | 451 | manager_shutdown_cgroup(m, m->exit_code != MANAGER_REEXECUTE); |
8e274523 | 452 | |
5a1e9937 LP |
453 | manager_undo_generators(m); |
454 | ||
5e8d1c9a | 455 | bus_done(m); |
ea430986 | 456 | |
87f0e418 | 457 | hashmap_free(m->units); |
60918275 | 458 | hashmap_free(m->jobs); |
e5b5ae50 | 459 | hashmap_free(m->transaction_jobs); |
9152c765 | 460 | hashmap_free(m->watch_pids); |
05e343b7 | 461 | hashmap_free(m->watch_bus); |
9152c765 LP |
462 | |
463 | if (m->epoll_fd >= 0) | |
a16e1123 | 464 | close_nointr_nofail(m->epoll_fd); |
acbb0225 | 465 | if (m->signal_watch.fd >= 0) |
a16e1123 | 466 | close_nointr_nofail(m->signal_watch.fd); |
8c47c732 LP |
467 | if (m->notify_watch.fd >= 0) |
468 | close_nointr_nofail(m->notify_watch.fd); | |
60918275 | 469 | |
4927fcae LP |
470 | #ifdef HAVE_AUDIT |
471 | if (m->audit_fd >= 0) | |
472 | audit_close(m->audit_fd); | |
473 | #endif | |
474 | ||
c952c6ec LP |
475 | free(m->notify_socket); |
476 | ||
84e3543e | 477 | lookup_paths_free(&m->lookup_paths); |
1137a57c | 478 | strv_free(m->environment); |
036643a2 | 479 | |
06d4c99a LP |
480 | strv_free(m->default_controllers); |
481 | ||
8e274523 | 482 | hashmap_free(m->cgroup_bondings); |
c6c18be3 | 483 | set_free_free(m->unit_path_cache); |
33be102a | 484 | |
60918275 LP |
485 | free(m); |
486 | } | |
487 | ||
a16e1123 LP |
488 | int manager_enumerate(Manager *m) { |
489 | int r = 0, q; | |
f50e0a01 | 490 | UnitType c; |
f50e0a01 LP |
491 | |
492 | assert(m); | |
493 | ||
a16e1123 LP |
494 | /* Let's ask every type to load all units from disk/kernel |
495 | * that it might know */ | |
f50e0a01 LP |
496 | for (c = 0; c < _UNIT_TYPE_MAX; c++) |
497 | if (unit_vtable[c]->enumerate) | |
a16e1123 LP |
498 | if ((q = unit_vtable[c]->enumerate(m)) < 0) |
499 | r = q; | |
f50e0a01 LP |
500 | |
501 | manager_dispatch_load_queue(m); | |
a16e1123 LP |
502 | return r; |
503 | } | |
504 | ||
505 | int manager_coldplug(Manager *m) { | |
506 | int r = 0, q; | |
507 | Iterator i; | |
508 | Unit *u; | |
509 | char *k; | |
510 | ||
511 | assert(m); | |
f50e0a01 LP |
512 | |
513 | /* Then, let's set up their initial state. */ | |
514 | HASHMAP_FOREACH_KEY(u, k, m->units, i) { | |
515 | ||
516 | /* ignore aliases */ | |
9e2f7c11 | 517 | if (u->meta.id != k) |
f50e0a01 LP |
518 | continue; |
519 | ||
cca098b0 LP |
520 | if ((q = unit_coldplug(u)) < 0) |
521 | r = q; | |
f50e0a01 LP |
522 | } |
523 | ||
a16e1123 LP |
524 | return r; |
525 | } | |
526 | ||
fe51822e LP |
527 | static void manager_build_unit_path_cache(Manager *m) { |
528 | char **i; | |
529 | DIR *d = NULL; | |
530 | int r; | |
531 | ||
532 | assert(m); | |
533 | ||
534 | set_free_free(m->unit_path_cache); | |
535 | ||
536 | if (!(m->unit_path_cache = set_new(string_hash_func, string_compare_func))) { | |
537 | log_error("Failed to allocate unit path cache."); | |
538 | return; | |
539 | } | |
540 | ||
541 | /* This simply builds a list of files we know exist, so that | |
542 | * we don't always have to go to disk */ | |
543 | ||
544 | STRV_FOREACH(i, m->lookup_paths.unit_path) { | |
545 | struct dirent *de; | |
546 | ||
547 | if (!(d = opendir(*i))) { | |
548 | log_error("Failed to open directory: %m"); | |
549 | continue; | |
550 | } | |
551 | ||
552 | while ((de = readdir(d))) { | |
553 | char *p; | |
554 | ||
555 | if (ignore_file(de->d_name)) | |
556 | continue; | |
557 | ||
558 | if (asprintf(&p, "%s/%s", streq(*i, "/") ? "" : *i, de->d_name) < 0) { | |
559 | r = -ENOMEM; | |
560 | goto fail; | |
561 | } | |
562 | ||
563 | if ((r = set_put(m->unit_path_cache, p)) < 0) { | |
564 | free(p); | |
565 | goto fail; | |
566 | } | |
567 | } | |
568 | ||
569 | closedir(d); | |
570 | d = NULL; | |
571 | } | |
572 | ||
573 | return; | |
574 | ||
575 | fail: | |
576 | log_error("Failed to build unit path cache: %s", strerror(-r)); | |
577 | ||
578 | set_free_free(m->unit_path_cache); | |
579 | m->unit_path_cache = NULL; | |
580 | ||
581 | if (d) | |
582 | closedir(d); | |
583 | } | |
584 | ||
a16e1123 LP |
585 | int manager_startup(Manager *m, FILE *serialization, FDSet *fds) { |
586 | int r, q; | |
587 | ||
588 | assert(m); | |
589 | ||
5a1e9937 LP |
590 | manager_run_generators(m); |
591 | ||
fe51822e LP |
592 | manager_build_unit_path_cache(m); |
593 | ||
9f611ad8 LP |
594 | /* If we will deserialize make sure that during enumeration |
595 | * this is already known, so we increase the counter here | |
596 | * already */ | |
597 | if (serialization) | |
598 | m->n_deserializing ++; | |
599 | ||
a16e1123 LP |
600 | /* First, enumerate what we can from all config files */ |
601 | r = manager_enumerate(m); | |
602 | ||
603 | /* Second, deserialize if there is something to deserialize */ | |
604 | if (serialization) | |
605 | if ((q = manager_deserialize(m, serialization, fds)) < 0) | |
606 | r = q; | |
607 | ||
608 | /* Third, fire things up! */ | |
609 | if ((q = manager_coldplug(m)) < 0) | |
610 | r = q; | |
611 | ||
9f611ad8 LP |
612 | if (serialization) { |
613 | assert(m->n_deserializing > 0); | |
614 | m->n_deserializing --; | |
615 | } | |
616 | ||
a16e1123 | 617 | return r; |
f50e0a01 LP |
618 | } |
619 | ||
23a177ef | 620 | static void transaction_delete_job(Manager *m, Job *j, bool delete_dependencies) { |
302d0040 LP |
621 | assert(m); |
622 | assert(j); | |
623 | ||
1ffba6fe LP |
624 | /* Deletes one job from the transaction */ |
625 | ||
23a177ef | 626 | manager_transaction_unlink_job(m, j, delete_dependencies); |
302d0040 | 627 | |
ac1135be | 628 | if (!j->installed) |
302d0040 LP |
629 | job_free(j); |
630 | } | |
631 | ||
87f0e418 | 632 | static void transaction_delete_unit(Manager *m, Unit *u) { |
1ffba6fe LP |
633 | Job *j; |
634 | ||
87f0e418 | 635 | /* Deletes all jobs associated with a certain unit from the |
1ffba6fe LP |
636 | * transaction */ |
637 | ||
87f0e418 | 638 | while ((j = hashmap_get(m->transaction_jobs, u))) |
23a177ef | 639 | transaction_delete_job(m, j, true); |
1ffba6fe LP |
640 | } |
641 | ||
f04fa1d5 LP |
642 | static void transaction_clean_dependencies(Manager *m) { |
643 | Iterator i; | |
644 | Job *j; | |
645 | ||
646 | assert(m); | |
647 | ||
648 | /* Drops all dependencies of all installed jobs */ | |
649 | ||
650 | HASHMAP_FOREACH(j, m->jobs, i) { | |
651 | while (j->subject_list) | |
652 | job_dependency_free(j->subject_list); | |
653 | while (j->object_list) | |
654 | job_dependency_free(j->object_list); | |
655 | } | |
656 | ||
657 | assert(!m->transaction_anchor); | |
658 | } | |
659 | ||
11dd41ce LP |
660 | static void transaction_abort(Manager *m) { |
661 | Job *j; | |
662 | ||
663 | assert(m); | |
11dd41ce | 664 | |
e5b5ae50 | 665 | while ((j = hashmap_first(m->transaction_jobs))) |
ac1135be | 666 | if (j->installed) |
23a177ef | 667 | transaction_delete_job(m, j, true); |
e5b5ae50 LP |
668 | else |
669 | job_free(j); | |
670 | ||
671 | assert(hashmap_isempty(m->transaction_jobs)); | |
f04fa1d5 LP |
672 | |
673 | transaction_clean_dependencies(m); | |
e5b5ae50 LP |
674 | } |
675 | ||
676 | static void transaction_find_jobs_that_matter_to_anchor(Manager *m, Job *j, unsigned generation) { | |
677 | JobDependency *l; | |
678 | ||
679 | assert(m); | |
680 | ||
87f0e418 | 681 | /* A recursive sweep through the graph that marks all units |
1ffba6fe LP |
682 | * that matter to the anchor job, i.e. are directly or |
683 | * indirectly a dependency of the anchor job via paths that | |
684 | * are fully marked as mattering. */ | |
685 | ||
44d8db9e LP |
686 | if (j) |
687 | l = j->subject_list; | |
688 | else | |
689 | l = m->transaction_anchor; | |
690 | ||
691 | LIST_FOREACH(subject, l, l) { | |
e5b5ae50 LP |
692 | |
693 | /* This link does not matter */ | |
694 | if (!l->matters) | |
695 | continue; | |
696 | ||
87f0e418 | 697 | /* This unit has already been marked */ |
e5b5ae50 LP |
698 | if (l->object->generation == generation) |
699 | continue; | |
700 | ||
701 | l->object->matters_to_anchor = true; | |
702 | l->object->generation = generation; | |
703 | ||
704 | transaction_find_jobs_that_matter_to_anchor(m, l->object, generation); | |
705 | } | |
706 | } | |
707 | ||
7fad411c | 708 | static void transaction_merge_and_delete_job(Manager *m, Job *j, Job *other, JobType t) { |
e5b5ae50 LP |
709 | JobDependency *l, *last; |
710 | ||
711 | assert(j); | |
712 | assert(other); | |
87f0e418 | 713 | assert(j->unit == other->unit); |
ac1135be | 714 | assert(!j->installed); |
e5b5ae50 | 715 | |
1ffba6fe LP |
716 | /* Merges 'other' into 'j' and then deletes j. */ |
717 | ||
e5b5ae50 LP |
718 | j->type = t; |
719 | j->state = JOB_WAITING; | |
9e2f7c11 | 720 | j->override = j->override || other->override; |
e5b5ae50 LP |
721 | |
722 | j->matters_to_anchor = j->matters_to_anchor || other->matters_to_anchor; | |
723 | ||
724 | /* Patch us in as new owner of the JobDependency objects */ | |
725 | last = NULL; | |
44d8db9e | 726 | LIST_FOREACH(subject, l, other->subject_list) { |
e5b5ae50 LP |
727 | assert(l->subject == other); |
728 | l->subject = j; | |
729 | last = l; | |
730 | } | |
731 | ||
732 | /* Merge both lists */ | |
733 | if (last) { | |
734 | last->subject_next = j->subject_list; | |
735 | if (j->subject_list) | |
736 | j->subject_list->subject_prev = last; | |
737 | j->subject_list = other->subject_list; | |
738 | } | |
739 | ||
740 | /* Patch us in as new owner of the JobDependency objects */ | |
741 | last = NULL; | |
44d8db9e | 742 | LIST_FOREACH(object, l, other->object_list) { |
e5b5ae50 LP |
743 | assert(l->object == other); |
744 | l->object = j; | |
745 | last = l; | |
746 | } | |
747 | ||
748 | /* Merge both lists */ | |
749 | if (last) { | |
750 | last->object_next = j->object_list; | |
751 | if (j->object_list) | |
752 | j->object_list->object_prev = last; | |
753 | j->object_list = other->object_list; | |
754 | } | |
755 | ||
e5b5ae50 LP |
756 | /* Kill the other job */ |
757 | other->subject_list = NULL; | |
758 | other->object_list = NULL; | |
23a177ef | 759 | transaction_delete_job(m, other, true); |
e5b5ae50 | 760 | } |
69dd2852 LP |
761 | static bool job_is_conflicted_by(Job *j) { |
762 | JobDependency *l; | |
763 | ||
764 | assert(j); | |
765 | ||
766 | /* Returns true if this job is pulled in by a least one | |
767 | * ConflictedBy dependency. */ | |
768 | ||
769 | LIST_FOREACH(object, l, j->object_list) | |
770 | if (l->conflicts) | |
771 | return true; | |
772 | ||
773 | return false; | |
774 | } | |
e5b5ae50 | 775 | |
5cb5a6ff | 776 | static int delete_one_unmergeable_job(Manager *m, Job *j) { |
1ffba6fe LP |
777 | Job *k; |
778 | ||
779 | assert(j); | |
780 | ||
781 | /* Tries to delete one item in the linked list | |
782 | * j->transaction_next->transaction_next->... that conflicts | |
35b8ca3a | 783 | * with another one, in an attempt to make an inconsistent |
1ffba6fe LP |
784 | * transaction work. */ |
785 | ||
786 | /* We rely here on the fact that if a merged with b does not | |
787 | * merge with c, either a or b merge with c neither */ | |
034c6ed7 LP |
788 | LIST_FOREACH(transaction, j, j) |
789 | LIST_FOREACH(transaction, k, j->transaction_next) { | |
1ffba6fe LP |
790 | Job *d; |
791 | ||
792 | /* Is this one mergeable? Then skip it */ | |
5cb5a6ff | 793 | if (job_type_is_mergeable(j->type, k->type)) |
1ffba6fe LP |
794 | continue; |
795 | ||
796 | /* Ok, we found two that conflict, let's see if we can | |
797 | * drop one of them */ | |
69dd2852 LP |
798 | if (!j->matters_to_anchor && !k->matters_to_anchor) { |
799 | ||
800 | /* Both jobs don't matter, so let's | |
801 | * find the one that is smarter to | |
802 | * remove. Let's think positive and | |
803 | * rather remove stops then starts -- | |
804 | * except if something is being | |
805 | * stopped because it is conflicted by | |
806 | * another unit in which case we | |
807 | * rather remove the start. */ | |
808 | ||
809 | log_debug("Looking at job %s/%s conflicted_by=%s", j->unit->meta.id, job_type_to_string(j->type), yes_no(j->type == JOB_STOP && job_is_conflicted_by(j))); | |
810 | log_debug("Looking at job %s/%s conflicted_by=%s", k->unit->meta.id, job_type_to_string(k->type), yes_no(k->type == JOB_STOP && job_is_conflicted_by(k))); | |
811 | ||
812 | if (j->type == JOB_STOP) { | |
813 | ||
814 | if (job_is_conflicted_by(j)) | |
815 | d = k; | |
816 | else | |
817 | d = j; | |
818 | ||
819 | } else if (k->type == JOB_STOP) { | |
820 | ||
821 | if (job_is_conflicted_by(k)) | |
822 | d = j; | |
823 | else | |
824 | d = k; | |
e364ad06 LP |
825 | } else |
826 | d = j; | |
69dd2852 LP |
827 | |
828 | } else if (!j->matters_to_anchor) | |
1ffba6fe LP |
829 | d = j; |
830 | else if (!k->matters_to_anchor) | |
831 | d = k; | |
832 | else | |
833 | return -ENOEXEC; | |
834 | ||
835 | /* Ok, we can drop one, so let's do so. */ | |
2e81c8a5 | 836 | log_debug("Fixing conflicting jobs by deleting job %s/%s", d->unit->meta.id, job_type_to_string(d->type)); |
23a177ef | 837 | transaction_delete_job(m, d, true); |
1ffba6fe LP |
838 | return 0; |
839 | } | |
840 | ||
841 | return -EINVAL; | |
842 | } | |
843 | ||
398ef8ba | 844 | static int transaction_merge_jobs(Manager *m, DBusError *e) { |
11dd41ce | 845 | Job *j; |
034c6ed7 | 846 | Iterator i; |
e5b5ae50 LP |
847 | int r; |
848 | ||
849 | assert(m); | |
850 | ||
1ffba6fe LP |
851 | /* First step, check whether any of the jobs for one specific |
852 | * task conflict. If so, try to drop one of them. */ | |
034c6ed7 | 853 | HASHMAP_FOREACH(j, m->transaction_jobs, i) { |
1ffba6fe LP |
854 | JobType t; |
855 | Job *k; | |
856 | ||
857 | t = j->type; | |
034c6ed7 | 858 | LIST_FOREACH(transaction, k, j->transaction_next) { |
e364ad06 | 859 | if (job_type_merge(&t, k->type) >= 0) |
1ffba6fe LP |
860 | continue; |
861 | ||
862 | /* OK, we could not merge all jobs for this | |
863 | * action. Let's see if we can get rid of one | |
864 | * of them */ | |
865 | ||
5cb5a6ff | 866 | if ((r = delete_one_unmergeable_job(m, j)) >= 0) |
1ffba6fe LP |
867 | /* Ok, we managed to drop one, now |
868 | * let's ask our callers to call us | |
869 | * again after garbage collecting */ | |
870 | return -EAGAIN; | |
871 | ||
872 | /* We couldn't merge anything. Failure */ | |
398ef8ba LP |
873 | dbus_set_error(e, BUS_ERROR_TRANSACTION_JOBS_CONFLICTING, "Transaction contains conflicting jobs '%s' and '%s' for %s. Probably contradicting requirement dependencies configured.", |
874 | job_type_to_string(t), job_type_to_string(k->type), k->unit->meta.id); | |
1ffba6fe LP |
875 | return r; |
876 | } | |
877 | } | |
878 | ||
879 | /* Second step, merge the jobs. */ | |
034c6ed7 | 880 | HASHMAP_FOREACH(j, m->transaction_jobs, i) { |
e5b5ae50 LP |
881 | JobType t = j->type; |
882 | Job *k; | |
883 | ||
e094e853 | 884 | /* Merge all transactions */ |
034c6ed7 | 885 | LIST_FOREACH(transaction, k, j->transaction_next) |
1ffba6fe | 886 | assert_se(job_type_merge(&t, k->type) == 0); |
e5b5ae50 | 887 | |
5cb5a6ff | 888 | /* If an active job is mergeable, merge it too */ |
87f0e418 LP |
889 | if (j->unit->meta.job) |
890 | job_type_merge(&t, j->unit->meta.job->type); /* Might fail. Which is OK */ | |
e094e853 | 891 | |
e5b5ae50 | 892 | while ((k = j->transaction_next)) { |
ac1135be | 893 | if (j->installed) { |
7fad411c | 894 | transaction_merge_and_delete_job(m, k, j, t); |
e5b5ae50 LP |
895 | j = k; |
896 | } else | |
7fad411c | 897 | transaction_merge_and_delete_job(m, j, k, t); |
e5b5ae50 LP |
898 | } |
899 | ||
1b562e46 MS |
900 | if (j->unit->meta.job && !j->installed) |
901 | transaction_merge_and_delete_job(m, j, j->unit->meta.job, t); | |
902 | ||
e5b5ae50 LP |
903 | assert(!j->transaction_next); |
904 | assert(!j->transaction_prev); | |
905 | } | |
906 | ||
7fad411c | 907 | return 0; |
e5b5ae50 LP |
908 | } |
909 | ||
23a177ef LP |
910 | static void transaction_drop_redundant(Manager *m) { |
911 | bool again; | |
912 | ||
913 | assert(m); | |
914 | ||
915 | /* Goes through the transaction and removes all jobs that are | |
916 | * a noop */ | |
917 | ||
918 | do { | |
919 | Job *j; | |
920 | Iterator i; | |
921 | ||
922 | again = false; | |
923 | ||
924 | HASHMAP_FOREACH(j, m->transaction_jobs, i) { | |
925 | bool changes_something = false; | |
926 | Job *k; | |
927 | ||
928 | LIST_FOREACH(transaction, k, j) { | |
929 | ||
930 | if (!job_is_anchor(k) && | |
3aea3b35 LP |
931 | (k->installed || job_type_is_redundant(k->type, unit_active_state(k->unit))) && |
932 | (!k->unit->meta.job || !job_type_is_conflicting(k->type, k->unit->meta.job->type))) | |
23a177ef LP |
933 | continue; |
934 | ||
935 | changes_something = true; | |
936 | break; | |
937 | } | |
938 | ||
939 | if (changes_something) | |
940 | continue; | |
941 | ||
9b3d9090 | 942 | /* log_debug("Found redundant job %s/%s, dropping.", j->unit->meta.id, job_type_to_string(j->type)); */ |
23a177ef LP |
943 | transaction_delete_job(m, j, false); |
944 | again = true; | |
945 | break; | |
946 | } | |
947 | ||
948 | } while (again); | |
949 | } | |
950 | ||
87f0e418 LP |
951 | static bool unit_matters_to_anchor(Unit *u, Job *j) { |
952 | assert(u); | |
1ffba6fe LP |
953 | assert(!j->transaction_prev); |
954 | ||
87f0e418 | 955 | /* Checks whether at least one of the jobs for this unit |
1ffba6fe LP |
956 | * matters to the anchor. */ |
957 | ||
034c6ed7 | 958 | LIST_FOREACH(transaction, j, j) |
1ffba6fe LP |
959 | if (j->matters_to_anchor) |
960 | return true; | |
961 | ||
962 | return false; | |
963 | } | |
964 | ||
398ef8ba | 965 | static int transaction_verify_order_one(Manager *m, Job *j, Job *from, unsigned generation, DBusError *e) { |
034c6ed7 | 966 | Iterator i; |
87f0e418 | 967 | Unit *u; |
11dd41ce | 968 | int r; |
e5b5ae50 LP |
969 | |
970 | assert(m); | |
971 | assert(j); | |
1ffba6fe LP |
972 | assert(!j->transaction_prev); |
973 | ||
974 | /* Does a recursive sweep through the ordering graph, looking | |
975 | * for a cycle. If we find cycle we try to break it. */ | |
e5b5ae50 | 976 | |
23e3c588 LP |
977 | /* Have we seen this before? */ |
978 | if (j->generation == generation) { | |
674a6e4d | 979 | Job *k, *delete; |
e5b5ae50 | 980 | |
23e3c588 LP |
981 | /* If the marker is NULL we have been here already and |
982 | * decided the job was loop-free from here. Hence | |
983 | * shortcut things and return right-away. */ | |
984 | if (!j->marker) | |
985 | return 0; | |
e5b5ae50 | 986 | |
23e3c588 LP |
987 | /* So, the marker is not NULL and we already have been |
988 | * here. We have a cycle. Let's try to break it. We go | |
989 | * backwards in our path and try to find a suitable | |
990 | * job to remove. We use the marker to find our way | |
991 | * back, since smart how we are we stored our way back | |
992 | * in there. */ | |
54165a39 | 993 | log_warning("Found ordering cycle on %s/%s", j->unit->meta.id, job_type_to_string(j->type)); |
9f04bd52 | 994 | |
674a6e4d | 995 | delete = NULL; |
23e3c588 | 996 | for (k = from; k; k = ((k->generation == generation && k->marker != k) ? k->marker : NULL)) { |
1ffba6fe | 997 | |
54165a39 | 998 | log_info("Walked on cycle path to %s/%s", k->unit->meta.id, job_type_to_string(k->type)); |
9f04bd52 | 999 | |
674a6e4d LP |
1000 | if (!delete && |
1001 | !k->installed && | |
87f0e418 | 1002 | !unit_matters_to_anchor(k->unit, k)) { |
1ffba6fe LP |
1003 | /* Ok, we can drop this one, so let's |
1004 | * do so. */ | |
674a6e4d | 1005 | delete = k; |
e5b5ae50 LP |
1006 | } |
1007 | ||
1008 | /* Check if this in fact was the beginning of | |
7fad411c | 1009 | * the cycle */ |
e5b5ae50 LP |
1010 | if (k == j) |
1011 | break; | |
1012 | } | |
1013 | ||
674a6e4d LP |
1014 | |
1015 | if (delete) { | |
54ec68b6 | 1016 | log_warning("Breaking ordering cycle by deleting job %s/%s", delete->unit->meta.id, job_type_to_string(delete->type)); |
674a6e4d LP |
1017 | transaction_delete_unit(m, delete->unit); |
1018 | return -EAGAIN; | |
1019 | } | |
1020 | ||
54165a39 | 1021 | log_error("Unable to break cycle"); |
9f04bd52 | 1022 | |
fe71c02c | 1023 | dbus_set_error(e, BUS_ERROR_TRANSACTION_ORDER_IS_CYCLIC, "Transaction order is cyclic. See system logs for details."); |
1ffba6fe | 1024 | return -ENOEXEC; |
e5b5ae50 LP |
1025 | } |
1026 | ||
1ffba6fe | 1027 | /* Make the marker point to where we come from, so that we can |
23e3c588 LP |
1028 | * find our way backwards if we want to break a cycle. We use |
1029 | * a special marker for the beginning: we point to | |
1030 | * ourselves. */ | |
1031 | j->marker = from ? from : j; | |
e5b5ae50 LP |
1032 | j->generation = generation; |
1033 | ||
1ffba6fe | 1034 | /* We assume that the the dependencies are bidirectional, and |
87f0e418 LP |
1035 | * hence can ignore UNIT_AFTER */ |
1036 | SET_FOREACH(u, j->unit->meta.dependencies[UNIT_BEFORE], i) { | |
e5b5ae50 LP |
1037 | Job *o; |
1038 | ||
87f0e418 LP |
1039 | /* Is there a job for this unit? */ |
1040 | if (!(o = hashmap_get(m->transaction_jobs, u))) | |
1ffba6fe LP |
1041 | |
1042 | /* Ok, there is no job for this in the | |
1043 | * transaction, but maybe there is already one | |
1044 | * running? */ | |
87f0e418 | 1045 | if (!(o = u->meta.job)) |
e5b5ae50 LP |
1046 | continue; |
1047 | ||
398ef8ba | 1048 | if ((r = transaction_verify_order_one(m, o, j, generation, e)) < 0) |
e5b5ae50 LP |
1049 | return r; |
1050 | } | |
1051 | ||
9f04bd52 LP |
1052 | /* Ok, let's backtrack, and remember that this entry is not on |
1053 | * our path anymore. */ | |
1054 | j->marker = NULL; | |
1055 | ||
e5b5ae50 LP |
1056 | return 0; |
1057 | } | |
1058 | ||
398ef8ba | 1059 | static int transaction_verify_order(Manager *m, unsigned *generation, DBusError *e) { |
1ffba6fe LP |
1060 | Job *j; |
1061 | int r; | |
034c6ed7 | 1062 | Iterator i; |
23e3c588 | 1063 | unsigned g; |
1ffba6fe | 1064 | |
e5b5ae50 LP |
1065 | assert(m); |
1066 | assert(generation); | |
1067 | ||
1ffba6fe LP |
1068 | /* Check if the ordering graph is cyclic. If it is, try to fix |
1069 | * that up by dropping one of the jobs. */ | |
e5b5ae50 | 1070 | |
23e3c588 LP |
1071 | g = (*generation)++; |
1072 | ||
034c6ed7 | 1073 | HASHMAP_FOREACH(j, m->transaction_jobs, i) |
398ef8ba | 1074 | if ((r = transaction_verify_order_one(m, j, NULL, g, e)) < 0) |
1ffba6fe | 1075 | return r; |
e5b5ae50 LP |
1076 | |
1077 | return 0; | |
1078 | } | |
1079 | ||
1080 | static void transaction_collect_garbage(Manager *m) { | |
1081 | bool again; | |
1082 | ||
1083 | assert(m); | |
1084 | ||
1ffba6fe LP |
1085 | /* Drop jobs that are not required by any other job */ |
1086 | ||
e5b5ae50 | 1087 | do { |
034c6ed7 | 1088 | Iterator i; |
e5b5ae50 LP |
1089 | Job *j; |
1090 | ||
1091 | again = false; | |
1092 | ||
034c6ed7 | 1093 | HASHMAP_FOREACH(j, m->transaction_jobs, i) { |
9b3d9090 LP |
1094 | if (j->object_list) { |
1095 | /* log_debug("Keeping job %s/%s because of %s/%s", */ | |
1096 | /* j->unit->meta.id, job_type_to_string(j->type), */ | |
1097 | /* j->object_list->subject ? j->object_list->subject->unit->meta.id : "root", */ | |
1098 | /* j->object_list->subject ? job_type_to_string(j->object_list->subject->type) : "root"); */ | |
e5b5ae50 | 1099 | continue; |
9b3d9090 | 1100 | } |
e5b5ae50 | 1101 | |
9b3d9090 | 1102 | /* log_debug("Garbage collecting job %s/%s", j->unit->meta.id, job_type_to_string(j->type)); */ |
23a177ef | 1103 | transaction_delete_job(m, j, true); |
e5b5ae50 LP |
1104 | again = true; |
1105 | break; | |
1106 | } | |
1107 | ||
1108 | } while (again); | |
1109 | } | |
1110 | ||
398ef8ba | 1111 | static int transaction_is_destructive(Manager *m, DBusError *e) { |
034c6ed7 | 1112 | Iterator i; |
e5b5ae50 | 1113 | Job *j; |
11dd41ce LP |
1114 | |
1115 | assert(m); | |
11dd41ce | 1116 | |
e5b5ae50 LP |
1117 | /* Checks whether applying this transaction means that |
1118 | * existing jobs would be replaced */ | |
11dd41ce | 1119 | |
034c6ed7 | 1120 | HASHMAP_FOREACH(j, m->transaction_jobs, i) { |
e094e853 LP |
1121 | |
1122 | /* Assume merged */ | |
1123 | assert(!j->transaction_prev); | |
1124 | assert(!j->transaction_next); | |
1125 | ||
87f0e418 LP |
1126 | if (j->unit->meta.job && |
1127 | j->unit->meta.job != j && | |
398ef8ba LP |
1128 | !job_type_is_superset(j->type, j->unit->meta.job->type)) { |
1129 | ||
1130 | dbus_set_error(e, BUS_ERROR_TRANSACTION_IS_DESTRUCTIVE, "Transaction is destructive."); | |
e5b5ae50 | 1131 | return -EEXIST; |
398ef8ba | 1132 | } |
e094e853 | 1133 | } |
11dd41ce | 1134 | |
e5b5ae50 LP |
1135 | return 0; |
1136 | } | |
1137 | ||
e094e853 LP |
1138 | static void transaction_minimize_impact(Manager *m) { |
1139 | bool again; | |
1140 | assert(m); | |
1141 | ||
1142 | /* Drops all unnecessary jobs that reverse already active jobs | |
1143 | * or that stop a running service. */ | |
1144 | ||
1145 | do { | |
1146 | Job *j; | |
034c6ed7 | 1147 | Iterator i; |
e094e853 LP |
1148 | |
1149 | again = false; | |
1150 | ||
034c6ed7 LP |
1151 | HASHMAP_FOREACH(j, m->transaction_jobs, i) { |
1152 | LIST_FOREACH(transaction, j, j) { | |
c20cae32 | 1153 | bool stops_running_service, changes_existing_job; |
e094e853 LP |
1154 | |
1155 | /* If it matters, we shouldn't drop it */ | |
1156 | if (j->matters_to_anchor) | |
1157 | continue; | |
1158 | ||
1159 | /* Would this stop a running service? | |
1160 | * Would this change an existing job? | |
1161 | * If so, let's drop this entry */ | |
c20cae32 LP |
1162 | |
1163 | stops_running_service = | |
1164 | j->type == JOB_STOP && UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(j->unit)); | |
1165 | ||
1166 | changes_existing_job = | |
143072ed LP |
1167 | j->unit->meta.job && |
1168 | job_type_is_conflicting(j->type, j->unit->meta.job->type); | |
c20cae32 LP |
1169 | |
1170 | if (!stops_running_service && !changes_existing_job) | |
e094e853 LP |
1171 | continue; |
1172 | ||
c20cae32 | 1173 | if (stops_running_service) |
d718bbb5 | 1174 | log_debug("%s/%s would stop a running service.", j->unit->meta.id, job_type_to_string(j->type)); |
c20cae32 LP |
1175 | |
1176 | if (changes_existing_job) | |
d718bbb5 | 1177 | log_debug("%s/%s would change existing job.", j->unit->meta.id, job_type_to_string(j->type)); |
c20cae32 | 1178 | |
e094e853 | 1179 | /* Ok, let's get rid of this */ |
d718bbb5 | 1180 | log_debug("Deleting %s/%s to minimize impact.", j->unit->meta.id, job_type_to_string(j->type)); |
c20cae32 | 1181 | |
23a177ef | 1182 | transaction_delete_job(m, j, true); |
e094e853 LP |
1183 | again = true; |
1184 | break; | |
1185 | } | |
1186 | ||
1187 | if (again) | |
1188 | break; | |
1189 | } | |
1190 | ||
1191 | } while (again); | |
1192 | } | |
1193 | ||
4fe60156 | 1194 | static int transaction_apply(Manager *m, JobMode mode) { |
034c6ed7 | 1195 | Iterator i; |
e5b5ae50 LP |
1196 | Job *j; |
1197 | int r; | |
1198 | ||
1ffba6fe LP |
1199 | /* Moves the transaction jobs to the set of active jobs */ |
1200 | ||
4fe60156 LP |
1201 | if (mode == JOB_ISOLATE) { |
1202 | ||
1203 | /* When isolating first kill all installed jobs which | |
1204 | * aren't part of the new transaction */ | |
1205 | HASHMAP_FOREACH(j, m->jobs, i) { | |
1206 | assert(j->installed); | |
1207 | ||
1208 | if (hashmap_get(m->transaction_jobs, j->unit)) | |
1209 | continue; | |
1210 | ||
1211 | job_finish_and_invalidate(j, JOB_CANCELED); | |
1212 | } | |
1213 | } | |
1214 | ||
034c6ed7 | 1215 | HASHMAP_FOREACH(j, m->transaction_jobs, i) { |
e094e853 LP |
1216 | /* Assume merged */ |
1217 | assert(!j->transaction_prev); | |
1218 | assert(!j->transaction_next); | |
1219 | ||
ac1135be | 1220 | if (j->installed) |
e5b5ae50 LP |
1221 | continue; |
1222 | ||
1223 | if ((r = hashmap_put(m->jobs, UINT32_TO_PTR(j->id), j)) < 0) | |
11dd41ce LP |
1224 | goto rollback; |
1225 | } | |
1226 | ||
e5b5ae50 | 1227 | while ((j = hashmap_steal_first(m->transaction_jobs))) { |
9b3d9090 LP |
1228 | if (j->installed) { |
1229 | /* log_debug("Skipping already installed job %s/%s as %u", j->unit->meta.id, job_type_to_string(j->type), (unsigned) j->id); */ | |
e5b5ae50 | 1230 | continue; |
9b3d9090 | 1231 | } |
e5b5ae50 | 1232 | |
87f0e418 LP |
1233 | if (j->unit->meta.job) |
1234 | job_free(j->unit->meta.job); | |
11dd41ce | 1235 | |
87f0e418 | 1236 | j->unit->meta.job = j; |
ac1135be | 1237 | j->installed = true; |
e409f875 | 1238 | m->n_installed_jobs ++; |
11dd41ce | 1239 | |
e5b5ae50 LP |
1240 | /* We're fully installed. Now let's free data we don't |
1241 | * need anymore. */ | |
1242 | ||
1243 | assert(!j->transaction_next); | |
1244 | assert(!j->transaction_prev); | |
1245 | ||
c1e1601e LP |
1246 | job_add_to_run_queue(j); |
1247 | job_add_to_dbus_queue(j); | |
312732cf | 1248 | job_start_timer(j); |
28c3247e LP |
1249 | |
1250 | log_debug("Installed new job %s/%s as %u", j->unit->meta.id, job_type_to_string(j->type), (unsigned) j->id); | |
01184e04 LP |
1251 | } |
1252 | ||
1253 | /* As last step, kill all remaining job dependencies. */ | |
f04fa1d5 | 1254 | transaction_clean_dependencies(m); |
1ffba6fe | 1255 | |
11dd41ce LP |
1256 | return 0; |
1257 | ||
1258 | rollback: | |
1259 | ||
034c6ed7 | 1260 | HASHMAP_FOREACH(j, m->transaction_jobs, i) { |
ac1135be | 1261 | if (j->installed) |
e5b5ae50 LP |
1262 | continue; |
1263 | ||
1264 | hashmap_remove(m->jobs, UINT32_TO_PTR(j->id)); | |
1265 | } | |
1266 | ||
1267 | return r; | |
1268 | } | |
1269 | ||
398ef8ba | 1270 | static int transaction_activate(Manager *m, JobMode mode, DBusError *e) { |
e5b5ae50 LP |
1271 | int r; |
1272 | unsigned generation = 1; | |
1273 | ||
1274 | assert(m); | |
1275 | ||
1276 | /* This applies the changes recorded in transaction_jobs to | |
1277 | * the actual list of jobs, if possible. */ | |
1278 | ||
1279 | /* First step: figure out which jobs matter */ | |
1280 | transaction_find_jobs_that_matter_to_anchor(m, NULL, generation++); | |
1281 | ||
e094e853 LP |
1282 | /* Second step: Try not to stop any running services if |
1283 | * we don't have to. Don't try to reverse running | |
1284 | * jobs if we don't have to. */ | |
143072ed | 1285 | if (mode == JOB_FAIL) |
c88e7f4e | 1286 | transaction_minimize_impact(m); |
e094e853 | 1287 | |
23a177ef LP |
1288 | /* Third step: Drop redundant jobs */ |
1289 | transaction_drop_redundant(m); | |
1290 | ||
1ffba6fe | 1291 | for (;;) { |
23a177ef | 1292 | /* Fourth step: Let's remove unneeded jobs that might |
1ffba6fe | 1293 | * be lurking. */ |
a8049b7a LP |
1294 | if (mode != JOB_ISOLATE) |
1295 | transaction_collect_garbage(m); | |
e5b5ae50 | 1296 | |
23a177ef | 1297 | /* Fifth step: verify order makes sense and correct |
1ffba6fe | 1298 | * cycles if necessary and possible */ |
398ef8ba | 1299 | if ((r = transaction_verify_order(m, &generation, e)) >= 0) |
1ffba6fe | 1300 | break; |
e5b5ae50 | 1301 | |
9f04bd52 | 1302 | if (r != -EAGAIN) { |
398ef8ba | 1303 | log_warning("Requested transaction contains an unfixable cyclic ordering dependency: %s", bus_error(e, r)); |
1ffba6fe | 1304 | goto rollback; |
9f04bd52 | 1305 | } |
e5b5ae50 | 1306 | |
1ffba6fe LP |
1307 | /* Let's see if the resulting transaction ordering |
1308 | * graph is still cyclic... */ | |
1309 | } | |
1310 | ||
1311 | for (;;) { | |
23a177ef | 1312 | /* Sixth step: let's drop unmergeable entries if |
1ffba6fe LP |
1313 | * necessary and possible, merge entries we can |
1314 | * merge */ | |
398ef8ba | 1315 | if ((r = transaction_merge_jobs(m, e)) >= 0) |
1ffba6fe LP |
1316 | break; |
1317 | ||
9f04bd52 | 1318 | if (r != -EAGAIN) { |
35b8ca3a | 1319 | log_warning("Requested transaction contains unmergeable jobs: %s", bus_error(e, r)); |
1ffba6fe | 1320 | goto rollback; |
9f04bd52 | 1321 | } |
1ffba6fe | 1322 | |
23a177ef | 1323 | /* Seventh step: an entry got dropped, let's garbage |
1ffba6fe | 1324 | * collect its dependencies. */ |
a8049b7a LP |
1325 | if (mode != JOB_ISOLATE) |
1326 | transaction_collect_garbage(m); | |
1ffba6fe LP |
1327 | |
1328 | /* Let's see if the resulting transaction still has | |
5cb5a6ff | 1329 | * unmergeable entries ... */ |
1ffba6fe LP |
1330 | } |
1331 | ||
23a177ef LP |
1332 | /* Eights step: Drop redundant jobs again, if the merging now allows us to drop more. */ |
1333 | transaction_drop_redundant(m); | |
1334 | ||
1335 | /* Ninth step: check whether we can actually apply this */ | |
e5b5ae50 | 1336 | if (mode == JOB_FAIL) |
398ef8ba LP |
1337 | if ((r = transaction_is_destructive(m, e)) < 0) { |
1338 | log_notice("Requested transaction contradicts existing jobs: %s", bus_error(e, r)); | |
e5b5ae50 | 1339 | goto rollback; |
9f04bd52 | 1340 | } |
e5b5ae50 | 1341 | |
23a177ef | 1342 | /* Tenth step: apply changes */ |
4fe60156 | 1343 | if ((r = transaction_apply(m, mode)) < 0) { |
54165a39 | 1344 | log_warning("Failed to apply transaction: %s", strerror(-r)); |
e5b5ae50 | 1345 | goto rollback; |
9f04bd52 | 1346 | } |
e5b5ae50 LP |
1347 | |
1348 | assert(hashmap_isempty(m->transaction_jobs)); | |
1349 | assert(!m->transaction_anchor); | |
1350 | ||
1351 | return 0; | |
11dd41ce | 1352 | |
e5b5ae50 | 1353 | rollback: |
11dd41ce LP |
1354 | transaction_abort(m); |
1355 | return r; | |
1356 | } | |
1357 | ||
9e2f7c11 | 1358 | static Job* transaction_add_one_job(Manager *m, JobType type, Unit *unit, bool override, bool *is_new) { |
e5b5ae50 | 1359 | Job *j, *f; |
60918275 LP |
1360 | |
1361 | assert(m); | |
87f0e418 | 1362 | assert(unit); |
60918275 | 1363 | |
35b8ca3a | 1364 | /* Looks for an existing prospective job and returns that. If |
e5b5ae50 LP |
1365 | * it doesn't exist it is created and added to the prospective |
1366 | * jobs list. */ | |
60918275 | 1367 | |
87f0e418 | 1368 | f = hashmap_get(m->transaction_jobs, unit); |
60918275 | 1369 | |
034c6ed7 | 1370 | LIST_FOREACH(transaction, j, f) { |
87f0e418 | 1371 | assert(j->unit == unit); |
60918275 | 1372 | |
e5b5ae50 LP |
1373 | if (j->type == type) { |
1374 | if (is_new) | |
1375 | *is_new = false; | |
1376 | return j; | |
1377 | } | |
1378 | } | |
60918275 | 1379 | |
87f0e418 LP |
1380 | if (unit->meta.job && unit->meta.job->type == type) |
1381 | j = unit->meta.job; | |
1382 | else if (!(j = job_new(m, type, unit))) | |
e5b5ae50 | 1383 | return NULL; |
60918275 | 1384 | |
e5b5ae50 LP |
1385 | j->generation = 0; |
1386 | j->marker = NULL; | |
1387 | j->matters_to_anchor = false; | |
9e2f7c11 | 1388 | j->override = override; |
60918275 | 1389 | |
034c6ed7 LP |
1390 | LIST_PREPEND(Job, transaction, f, j); |
1391 | ||
e364ad06 | 1392 | if (hashmap_replace(m->transaction_jobs, unit, f) < 0) { |
034c6ed7 LP |
1393 | job_free(j); |
1394 | return NULL; | |
1395 | } | |
1396 | ||
e5b5ae50 LP |
1397 | if (is_new) |
1398 | *is_new = true; | |
60918275 | 1399 | |
9b3d9090 | 1400 | /* log_debug("Added job %s/%s to transaction.", unit->meta.id, job_type_to_string(type)); */ |
23a177ef | 1401 | |
e5b5ae50 LP |
1402 | return j; |
1403 | } | |
11dd41ce | 1404 | |
23a177ef | 1405 | void manager_transaction_unlink_job(Manager *m, Job *j, bool delete_dependencies) { |
e5b5ae50 LP |
1406 | assert(m); |
1407 | assert(j); | |
11dd41ce | 1408 | |
e5b5ae50 LP |
1409 | if (j->transaction_prev) |
1410 | j->transaction_prev->transaction_next = j->transaction_next; | |
1411 | else if (j->transaction_next) | |
87f0e418 | 1412 | hashmap_replace(m->transaction_jobs, j->unit, j->transaction_next); |
e5b5ae50 | 1413 | else |
87f0e418 | 1414 | hashmap_remove_value(m->transaction_jobs, j->unit, j); |
e5b5ae50 LP |
1415 | |
1416 | if (j->transaction_next) | |
1417 | j->transaction_next->transaction_prev = j->transaction_prev; | |
1418 | ||
1419 | j->transaction_prev = j->transaction_next = NULL; | |
1420 | ||
1421 | while (j->subject_list) | |
1422 | job_dependency_free(j->subject_list); | |
1e198baf LP |
1423 | |
1424 | while (j->object_list) { | |
1425 | Job *other = j->object_list->matters ? j->object_list->subject : NULL; | |
1426 | ||
e5b5ae50 | 1427 | job_dependency_free(j->object_list); |
1e198baf | 1428 | |
23a177ef | 1429 | if (other && delete_dependencies) { |
2e81c8a5 | 1430 | log_debug("Deleting job %s/%s as dependency of job %s/%s", |
9e2f7c11 LP |
1431 | other->unit->meta.id, job_type_to_string(other->type), |
1432 | j->unit->meta.id, job_type_to_string(j->type)); | |
23a177ef | 1433 | transaction_delete_job(m, other, delete_dependencies); |
1e198baf LP |
1434 | } |
1435 | } | |
e5b5ae50 LP |
1436 | } |
1437 | ||
9e2f7c11 LP |
1438 | static int transaction_add_job_and_dependencies( |
1439 | Manager *m, | |
1440 | JobType type, | |
1441 | Unit *unit, | |
1442 | Job *by, | |
1443 | bool matters, | |
1444 | bool override, | |
69dd2852 | 1445 | bool conflicts, |
cebe0d41 LP |
1446 | bool ignore_requirements, |
1447 | bool ignore_order, | |
398ef8ba | 1448 | DBusError *e, |
9e2f7c11 | 1449 | Job **_ret) { |
e5b5ae50 | 1450 | Job *ret; |
034c6ed7 | 1451 | Iterator i; |
87f0e418 | 1452 | Unit *dep; |
e5b5ae50 LP |
1453 | int r; |
1454 | bool is_new; | |
1455 | ||
1456 | assert(m); | |
1457 | assert(type < _JOB_TYPE_MAX); | |
87f0e418 | 1458 | assert(unit); |
e5b5ae50 | 1459 | |
3aea3b35 LP |
1460 | /* log_debug("Pulling in %s/%s from %s/%s", */ |
1461 | /* unit->meta.id, job_type_to_string(type), */ | |
1462 | /* by ? by->unit->meta.id : "NA", */ | |
1463 | /* by ? job_type_to_string(by->type) : "NA"); */ | |
1464 | ||
00dc5d76 LP |
1465 | if (unit->meta.load_state != UNIT_LOADED && |
1466 | unit->meta.load_state != UNIT_ERROR && | |
6daf4f90 | 1467 | unit->meta.load_state != UNIT_MASKED) { |
8821a00f LP |
1468 | dbus_set_error(e, BUS_ERROR_LOAD_FAILED, "Unit %s is not loaded properly.", unit->meta.id); |
1469 | return -EINVAL; | |
1470 | } | |
1471 | ||
fdf20a31 | 1472 | if (type != JOB_STOP && unit->meta.load_state == UNIT_ERROR) { |
00dc5d76 LP |
1473 | dbus_set_error(e, BUS_ERROR_LOAD_FAILED, |
1474 | "Unit %s failed to load: %s. " | |
3661ac04 | 1475 | "See system logs and 'systemctl status %s' for details.", |
8821a00f | 1476 | unit->meta.id, |
3661ac04 LP |
1477 | strerror(-unit->meta.load_error), |
1478 | unit->meta.id); | |
21b293e8 | 1479 | return -EINVAL; |
398ef8ba | 1480 | } |
21b293e8 | 1481 | |
6daf4f90 LP |
1482 | if (type != JOB_STOP && unit->meta.load_state == UNIT_MASKED) { |
1483 | dbus_set_error(e, BUS_ERROR_MASKED, "Unit %s is masked.", unit->meta.id); | |
00dc5d76 LP |
1484 | return -EINVAL; |
1485 | } | |
1486 | ||
398ef8ba LP |
1487 | if (!unit_job_is_applicable(unit, type)) { |
1488 | dbus_set_error(e, BUS_ERROR_JOB_TYPE_NOT_APPLICABLE, "Job type %s is not applicable for unit %s.", job_type_to_string(type), unit->meta.id); | |
cd2dbd7d | 1489 | return -EBADR; |
398ef8ba | 1490 | } |
cd2dbd7d | 1491 | |
e5b5ae50 | 1492 | /* First add the job. */ |
9e2f7c11 | 1493 | if (!(ret = transaction_add_one_job(m, type, unit, override, &is_new))) |
e5b5ae50 LP |
1494 | return -ENOMEM; |
1495 | ||
cebe0d41 | 1496 | ret->ignore_order = ret->ignore_order || ignore_order; |
e67c3609 | 1497 | |
e5b5ae50 | 1498 | /* Then, add a link to the job. */ |
69dd2852 | 1499 | if (!job_dependency_new(by, ret, matters, conflicts)) |
e5b5ae50 LP |
1500 | return -ENOMEM; |
1501 | ||
cebe0d41 | 1502 | if (is_new && !ignore_requirements) { |
6210e7fc LP |
1503 | Set *following; |
1504 | ||
1505 | /* If we are following some other unit, make sure we | |
1506 | * add all dependencies of everybody following. */ | |
1507 | if (unit_following_set(ret->unit, &following) > 0) { | |
1508 | SET_FOREACH(dep, following, i) | |
cebe0d41 | 1509 | if ((r = transaction_add_job_and_dependencies(m, type, dep, ret, false, override, false, false, ignore_order, e, NULL)) < 0) { |
6210e7fc LP |
1510 | log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->meta.id, bus_error(e, r)); |
1511 | ||
1512 | if (e) | |
1513 | dbus_error_free(e); | |
1514 | } | |
1515 | ||
1516 | set_free(following); | |
1517 | } | |
1518 | ||
e5b5ae50 LP |
1519 | /* Finally, recursively add in all dependencies. */ |
1520 | if (type == JOB_START || type == JOB_RELOAD_OR_START) { | |
87f0e418 | 1521 | SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_REQUIRES], i) |
cebe0d41 | 1522 | if ((r = transaction_add_job_and_dependencies(m, JOB_START, dep, ret, true, override, false, false, ignore_order, e, NULL)) < 0) { |
41242c42 LP |
1523 | if (r != -EBADR) |
1524 | goto fail; | |
1525 | ||
1526 | if (e) | |
1527 | dbus_error_free(e); | |
1528 | } | |
9e2f7c11 | 1529 | |
b81884e7 | 1530 | SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_BIND_TO], i) |
cebe0d41 | 1531 | if ((r = transaction_add_job_and_dependencies(m, JOB_START, dep, ret, true, override, false, false, ignore_order, e, NULL)) < 0) { |
41242c42 LP |
1532 | |
1533 | if (r != -EBADR) | |
1534 | goto fail; | |
1535 | ||
1536 | if (e) | |
1537 | dbus_error_free(e); | |
1538 | } | |
b81884e7 | 1539 | |
9e2f7c11 | 1540 | SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_REQUIRES_OVERRIDABLE], i) |
cebe0d41 | 1541 | if ((r = transaction_add_job_and_dependencies(m, JOB_START, dep, ret, !override, override, false, false, ignore_order, e, NULL)) < 0) { |
65e92d67 | 1542 | log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->meta.id, bus_error(e, r)); |
60dc72b5 LP |
1543 | |
1544 | if (e) | |
1545 | dbus_error_free(e); | |
65e92d67 | 1546 | } |
9e2f7c11 | 1547 | |
87f0e418 | 1548 | SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_WANTS], i) |
cebe0d41 | 1549 | if ((r = transaction_add_job_and_dependencies(m, JOB_START, dep, ret, false, false, false, false, ignore_order, e, NULL)) < 0) { |
65e92d67 | 1550 | log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->meta.id, bus_error(e, r)); |
60dc72b5 LP |
1551 | |
1552 | if (e) | |
1553 | dbus_error_free(e); | |
65e92d67 | 1554 | } |
9e2f7c11 | 1555 | |
87f0e418 | 1556 | SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_REQUISITE], i) |
cebe0d41 | 1557 | if ((r = transaction_add_job_and_dependencies(m, JOB_VERIFY_ACTIVE, dep, ret, true, override, false, false, ignore_order, e, NULL)) < 0) { |
41242c42 LP |
1558 | |
1559 | if (r != -EBADR) | |
1560 | goto fail; | |
1561 | ||
1562 | if (e) | |
1563 | dbus_error_free(e); | |
1564 | } | |
9e2f7c11 LP |
1565 | |
1566 | SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_REQUISITE_OVERRIDABLE], i) | |
cebe0d41 | 1567 | if ((r = transaction_add_job_and_dependencies(m, JOB_VERIFY_ACTIVE, dep, ret, !override, override, false, false, ignore_order, e, NULL)) < 0) { |
65e92d67 | 1568 | log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->meta.id, bus_error(e, r)); |
60dc72b5 LP |
1569 | |
1570 | if (e) | |
1571 | dbus_error_free(e); | |
65e92d67 | 1572 | } |
9e2f7c11 | 1573 | |
87f0e418 | 1574 | SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_CONFLICTS], i) |
cebe0d41 | 1575 | if ((r = transaction_add_job_and_dependencies(m, JOB_STOP, dep, ret, true, override, true, false, ignore_order, e, NULL)) < 0) { |
41242c42 LP |
1576 | |
1577 | if (r != -EBADR) | |
1578 | goto fail; | |
1579 | ||
1580 | if (e) | |
1581 | dbus_error_free(e); | |
1582 | } | |
69dd2852 LP |
1583 | |
1584 | SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_CONFLICTED_BY], i) | |
cebe0d41 | 1585 | if ((r = transaction_add_job_and_dependencies(m, JOB_STOP, dep, ret, false, override, false, false, ignore_order, e, NULL)) < 0) { |
41242c42 LP |
1586 | log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->meta.id, bus_error(e, r)); |
1587 | ||
1588 | if (e) | |
1589 | dbus_error_free(e); | |
1590 | } | |
e5b5ae50 LP |
1591 | |
1592 | } else if (type == JOB_STOP || type == JOB_RESTART || type == JOB_TRY_RESTART) { | |
1593 | ||
87f0e418 | 1594 | SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_REQUIRED_BY], i) |
cebe0d41 | 1595 | if ((r = transaction_add_job_and_dependencies(m, type, dep, ret, true, override, false, false, ignore_order, e, NULL)) < 0) { |
41242c42 LP |
1596 | |
1597 | if (r != -EBADR) | |
1598 | goto fail; | |
1599 | ||
1600 | if (e) | |
1601 | dbus_error_free(e); | |
1602 | } | |
b81884e7 LP |
1603 | |
1604 | SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_BOUND_BY], i) | |
cebe0d41 | 1605 | if ((r = transaction_add_job_and_dependencies(m, type, dep, ret, true, override, false, false, ignore_order, e, NULL)) < 0) { |
41242c42 LP |
1606 | |
1607 | if (r != -EBADR) | |
1608 | goto fail; | |
1609 | ||
1610 | if (e) | |
1611 | dbus_error_free(e); | |
1612 | } | |
e5b5ae50 LP |
1613 | } |
1614 | ||
1615 | /* JOB_VERIFY_STARTED, JOB_RELOAD require no dependency handling */ | |
1616 | } | |
60918275 | 1617 | |
c0dafa48 LP |
1618 | if (_ret) |
1619 | *_ret = ret; | |
1620 | ||
60918275 LP |
1621 | return 0; |
1622 | ||
1623 | fail: | |
e5b5ae50 LP |
1624 | return r; |
1625 | } | |
1626 | ||
c497c7a9 LP |
1627 | static int transaction_add_isolate_jobs(Manager *m) { |
1628 | Iterator i; | |
1629 | Unit *u; | |
1630 | char *k; | |
1631 | int r; | |
1632 | ||
1633 | assert(m); | |
1634 | ||
1635 | HASHMAP_FOREACH_KEY(u, k, m->units, i) { | |
1636 | ||
1637 | /* ignore aliases */ | |
1638 | if (u->meta.id != k) | |
1639 | continue; | |
1640 | ||
c8f4d764 | 1641 | if (u->meta.ignore_on_isolate) |
c497c7a9 LP |
1642 | continue; |
1643 | ||
1644 | /* No need to stop inactive jobs */ | |
2ce5c8f9 | 1645 | if (UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(u)) && !u->meta.job) |
c497c7a9 LP |
1646 | continue; |
1647 | ||
1648 | /* Is there already something listed for this? */ | |
1649 | if (hashmap_get(m->transaction_jobs, u)) | |
1650 | continue; | |
1651 | ||
cebe0d41 | 1652 | if ((r = transaction_add_job_and_dependencies(m, JOB_STOP, u, NULL, true, false, false, false, false, NULL, NULL)) < 0) |
c497c7a9 LP |
1653 | log_warning("Cannot add isolate job for unit %s, ignoring: %s", u->meta.id, strerror(-r)); |
1654 | } | |
1655 | ||
1656 | return 0; | |
1657 | } | |
1658 | ||
398ef8ba | 1659 | int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool override, DBusError *e, Job **_ret) { |
e5b5ae50 LP |
1660 | int r; |
1661 | Job *ret; | |
1662 | ||
1663 | assert(m); | |
1664 | assert(type < _JOB_TYPE_MAX); | |
87f0e418 | 1665 | assert(unit); |
e5b5ae50 | 1666 | assert(mode < _JOB_MODE_MAX); |
60918275 | 1667 | |
398ef8ba LP |
1668 | if (mode == JOB_ISOLATE && type != JOB_START) { |
1669 | dbus_set_error(e, BUS_ERROR_INVALID_JOB_MODE, "Isolate is only valid for start."); | |
c497c7a9 | 1670 | return -EINVAL; |
398ef8ba | 1671 | } |
c497c7a9 | 1672 | |
2528a7a6 LP |
1673 | if (mode == JOB_ISOLATE && !unit->meta.allow_isolate) { |
1674 | dbus_set_error(e, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated."); | |
1675 | return -EPERM; | |
1676 | } | |
1677 | ||
e43ac878 | 1678 | log_debug("Trying to enqueue job %s/%s/%s", unit->meta.id, job_type_to_string(type), job_mode_to_string(mode)); |
9f04bd52 | 1679 | |
cebe0d41 LP |
1680 | if ((r = transaction_add_job_and_dependencies(m, type, unit, NULL, true, override, false, |
1681 | mode == JOB_IGNORE_DEPENDENCIES || mode == JOB_IGNORE_REQUIREMENTS, | |
1682 | mode == JOB_IGNORE_DEPENDENCIES, e, &ret)) < 0) { | |
11dd41ce | 1683 | transaction_abort(m); |
e5b5ae50 LP |
1684 | return r; |
1685 | } | |
11dd41ce | 1686 | |
c497c7a9 LP |
1687 | if (mode == JOB_ISOLATE) |
1688 | if ((r = transaction_add_isolate_jobs(m)) < 0) { | |
1689 | transaction_abort(m); | |
1690 | return r; | |
1691 | } | |
1692 | ||
398ef8ba | 1693 | if ((r = transaction_activate(m, mode, e)) < 0) |
e5b5ae50 LP |
1694 | return r; |
1695 | ||
9e2f7c11 | 1696 | log_debug("Enqueued job %s/%s as %u", unit->meta.id, job_type_to_string(type), (unsigned) ret->id); |
f50e0a01 | 1697 | |
e5b5ae50 LP |
1698 | if (_ret) |
1699 | *_ret = ret; | |
60918275 | 1700 | |
e5b5ae50 LP |
1701 | return 0; |
1702 | } | |
60918275 | 1703 | |
398ef8ba | 1704 | int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool override, DBusError *e, Job **_ret) { |
28247076 LP |
1705 | Unit *unit; |
1706 | int r; | |
1707 | ||
1708 | assert(m); | |
1709 | assert(type < _JOB_TYPE_MAX); | |
1710 | assert(name); | |
1711 | assert(mode < _JOB_MODE_MAX); | |
1712 | ||
398ef8ba | 1713 | if ((r = manager_load_unit(m, name, NULL, NULL, &unit)) < 0) |
28247076 LP |
1714 | return r; |
1715 | ||
398ef8ba | 1716 | return manager_add_job(m, type, unit, mode, override, e, _ret); |
28247076 LP |
1717 | } |
1718 | ||
60918275 LP |
1719 | Job *manager_get_job(Manager *m, uint32_t id) { |
1720 | assert(m); | |
1721 | ||
1722 | return hashmap_get(m->jobs, UINT32_TO_PTR(id)); | |
1723 | } | |
1724 | ||
87f0e418 | 1725 | Unit *manager_get_unit(Manager *m, const char *name) { |
60918275 LP |
1726 | assert(m); |
1727 | assert(name); | |
1728 | ||
87f0e418 | 1729 | return hashmap_get(m->units, name); |
60918275 LP |
1730 | } |
1731 | ||
c1e1601e | 1732 | unsigned manager_dispatch_load_queue(Manager *m) { |
60918275 | 1733 | Meta *meta; |
c1e1601e | 1734 | unsigned n = 0; |
60918275 LP |
1735 | |
1736 | assert(m); | |
1737 | ||
223dabab LP |
1738 | /* Make sure we are not run recursively */ |
1739 | if (m->dispatching_load_queue) | |
c1e1601e | 1740 | return 0; |
223dabab LP |
1741 | |
1742 | m->dispatching_load_queue = true; | |
1743 | ||
87f0e418 | 1744 | /* Dispatches the load queue. Takes a unit from the queue and |
60918275 LP |
1745 | * tries to load its data until the queue is empty */ |
1746 | ||
1747 | while ((meta = m->load_queue)) { | |
034c6ed7 LP |
1748 | assert(meta->in_load_queue); |
1749 | ||
399ab2b1 | 1750 | unit_load((Unit*) meta); |
c1e1601e | 1751 | n++; |
60918275 LP |
1752 | } |
1753 | ||
223dabab | 1754 | m->dispatching_load_queue = false; |
c1e1601e | 1755 | return n; |
60918275 LP |
1756 | } |
1757 | ||
398ef8ba | 1758 | int manager_load_unit_prepare(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret) { |
87f0e418 | 1759 | Unit *ret; |
60918275 LP |
1760 | int r; |
1761 | ||
1762 | assert(m); | |
9e2f7c11 | 1763 | assert(name || path); |
60918275 | 1764 | |
db06e3b6 LP |
1765 | /* This will prepare the unit for loading, but not actually |
1766 | * load anything from disk. */ | |
0301abf4 | 1767 | |
398ef8ba LP |
1768 | if (path && !is_path(path)) { |
1769 | dbus_set_error(e, BUS_ERROR_INVALID_PATH, "Path %s is not absolute.", path); | |
9e2f7c11 | 1770 | return -EINVAL; |
398ef8ba | 1771 | } |
9e2f7c11 LP |
1772 | |
1773 | if (!name) | |
1774 | name = file_name_from_path(path); | |
1775 | ||
b9c0d441 | 1776 | if (!unit_name_is_valid(name, false)) { |
398ef8ba | 1777 | dbus_set_error(e, BUS_ERROR_INVALID_NAME, "Unit name %s is not valid.", name); |
9e2f7c11 | 1778 | return -EINVAL; |
398ef8ba | 1779 | } |
60918275 | 1780 | |
87f0e418 | 1781 | if ((ret = manager_get_unit(m, name))) { |
034c6ed7 | 1782 | *_ret = ret; |
413d6313 | 1783 | return 1; |
034c6ed7 | 1784 | } |
60918275 | 1785 | |
87f0e418 | 1786 | if (!(ret = unit_new(m))) |
60918275 LP |
1787 | return -ENOMEM; |
1788 | ||
9e2f7c11 | 1789 | if (path) |
6be1e7d5 | 1790 | if (!(ret->meta.fragment_path = strdup(path))) { |
0301abf4 LP |
1791 | unit_free(ret); |
1792 | return -ENOMEM; | |
1793 | } | |
0301abf4 | 1794 | |
87f0e418 LP |
1795 | if ((r = unit_add_name(ret, name)) < 0) { |
1796 | unit_free(ret); | |
1ffba6fe | 1797 | return r; |
60918275 LP |
1798 | } |
1799 | ||
87f0e418 | 1800 | unit_add_to_load_queue(ret); |
c1e1601e | 1801 | unit_add_to_dbus_queue(ret); |
949061f0 | 1802 | unit_add_to_gc_queue(ret); |
c1e1601e | 1803 | |
db06e3b6 LP |
1804 | if (_ret) |
1805 | *_ret = ret; | |
1806 | ||
1807 | return 0; | |
1808 | } | |
1809 | ||
398ef8ba | 1810 | int manager_load_unit(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret) { |
db06e3b6 LP |
1811 | int r; |
1812 | ||
1813 | assert(m); | |
1814 | ||
1815 | /* This will load the service information files, but not actually | |
1816 | * start any services or anything. */ | |
1817 | ||
398ef8ba | 1818 | if ((r = manager_load_unit_prepare(m, name, path, e, _ret)) != 0) |
db06e3b6 LP |
1819 | return r; |
1820 | ||
f50e0a01 | 1821 | manager_dispatch_load_queue(m); |
60918275 | 1822 | |
9e2f7c11 | 1823 | if (_ret) |
413d6313 | 1824 | *_ret = unit_follow_merge(*_ret); |
9e2f7c11 | 1825 | |
60918275 LP |
1826 | return 0; |
1827 | } | |
a66d02c3 | 1828 | |
cea8e32e | 1829 | void manager_dump_jobs(Manager *s, FILE *f, const char *prefix) { |
034c6ed7 | 1830 | Iterator i; |
a66d02c3 LP |
1831 | Job *j; |
1832 | ||
1833 | assert(s); | |
1834 | assert(f); | |
1835 | ||
034c6ed7 | 1836 | HASHMAP_FOREACH(j, s->jobs, i) |
cea8e32e | 1837 | job_dump(j, f, prefix); |
a66d02c3 LP |
1838 | } |
1839 | ||
87f0e418 | 1840 | void manager_dump_units(Manager *s, FILE *f, const char *prefix) { |
034c6ed7 | 1841 | Iterator i; |
87f0e418 | 1842 | Unit *u; |
11dd41ce | 1843 | const char *t; |
a66d02c3 LP |
1844 | |
1845 | assert(s); | |
1846 | assert(f); | |
1847 | ||
87f0e418 | 1848 | HASHMAP_FOREACH_KEY(u, t, s->units, i) |
9e2f7c11 | 1849 | if (u->meta.id == t) |
87f0e418 | 1850 | unit_dump(u, f, prefix); |
a66d02c3 | 1851 | } |
7fad411c LP |
1852 | |
1853 | void manager_clear_jobs(Manager *m) { | |
1854 | Job *j; | |
1855 | ||
1856 | assert(m); | |
1857 | ||
1858 | transaction_abort(m); | |
1859 | ||
1860 | while ((j = hashmap_first(m->jobs))) | |
c77bc38d | 1861 | job_finish_and_invalidate(j, JOB_CANCELED); |
7fad411c | 1862 | } |
83c60c9f | 1863 | |
c1e1601e | 1864 | unsigned manager_dispatch_run_queue(Manager *m) { |
83c60c9f | 1865 | Job *j; |
c1e1601e | 1866 | unsigned n = 0; |
83c60c9f | 1867 | |
034c6ed7 | 1868 | if (m->dispatching_run_queue) |
c1e1601e | 1869 | return 0; |
034c6ed7 LP |
1870 | |
1871 | m->dispatching_run_queue = true; | |
9152c765 | 1872 | |
034c6ed7 | 1873 | while ((j = m->run_queue)) { |
ac1135be | 1874 | assert(j->installed); |
034c6ed7 LP |
1875 | assert(j->in_run_queue); |
1876 | ||
1877 | job_run_and_invalidate(j); | |
c1e1601e | 1878 | n++; |
9152c765 | 1879 | } |
034c6ed7 LP |
1880 | |
1881 | m->dispatching_run_queue = false; | |
c1e1601e LP |
1882 | return n; |
1883 | } | |
1884 | ||
1885 | unsigned manager_dispatch_dbus_queue(Manager *m) { | |
1886 | Job *j; | |
1887 | Meta *meta; | |
1888 | unsigned n = 0; | |
1889 | ||
1890 | assert(m); | |
1891 | ||
1892 | if (m->dispatching_dbus_queue) | |
1893 | return 0; | |
1894 | ||
1895 | m->dispatching_dbus_queue = true; | |
1896 | ||
1897 | while ((meta = m->dbus_unit_queue)) { | |
23a177ef | 1898 | assert(meta->in_dbus_queue); |
c1e1601e | 1899 | |
399ab2b1 | 1900 | bus_unit_send_change_signal((Unit*) meta); |
c1e1601e LP |
1901 | n++; |
1902 | } | |
1903 | ||
1904 | while ((j = m->dbus_job_queue)) { | |
1905 | assert(j->in_dbus_queue); | |
1906 | ||
1907 | bus_job_send_change_signal(j); | |
1908 | n++; | |
1909 | } | |
1910 | ||
1911 | m->dispatching_dbus_queue = false; | |
1912 | return n; | |
9152c765 LP |
1913 | } |
1914 | ||
8c47c732 LP |
1915 | static int manager_process_notify_fd(Manager *m) { |
1916 | ssize_t n; | |
1917 | ||
1918 | assert(m); | |
1919 | ||
1920 | for (;;) { | |
1921 | char buf[4096]; | |
1922 | struct msghdr msghdr; | |
1923 | struct iovec iovec; | |
1924 | struct ucred *ucred; | |
1925 | union { | |
1926 | struct cmsghdr cmsghdr; | |
1927 | uint8_t buf[CMSG_SPACE(sizeof(struct ucred))]; | |
1928 | } control; | |
1929 | Unit *u; | |
1930 | char **tags; | |
1931 | ||
1932 | zero(iovec); | |
1933 | iovec.iov_base = buf; | |
1934 | iovec.iov_len = sizeof(buf)-1; | |
1935 | ||
1936 | zero(control); | |
1937 | zero(msghdr); | |
1938 | msghdr.msg_iov = &iovec; | |
1939 | msghdr.msg_iovlen = 1; | |
1940 | msghdr.msg_control = &control; | |
1941 | msghdr.msg_controllen = sizeof(control); | |
1942 | ||
1943 | if ((n = recvmsg(m->notify_watch.fd, &msghdr, MSG_DONTWAIT)) <= 0) { | |
1944 | if (n >= 0) | |
1945 | return -EIO; | |
1946 | ||
f6144808 | 1947 | if (errno == EAGAIN || errno == EINTR) |
8c47c732 LP |
1948 | break; |
1949 | ||
1950 | return -errno; | |
1951 | } | |
1952 | ||
1953 | if (msghdr.msg_controllen < CMSG_LEN(sizeof(struct ucred)) || | |
1954 | control.cmsghdr.cmsg_level != SOL_SOCKET || | |
1955 | control.cmsghdr.cmsg_type != SCM_CREDENTIALS || | |
1956 | control.cmsghdr.cmsg_len != CMSG_LEN(sizeof(struct ucred))) { | |
1957 | log_warning("Received notify message without credentials. Ignoring."); | |
1958 | continue; | |
1959 | } | |
1960 | ||
1961 | ucred = (struct ucred*) CMSG_DATA(&control.cmsghdr); | |
1962 | ||
c6c18be3 | 1963 | if (!(u = hashmap_get(m->watch_pids, LONG_TO_PTR(ucred->pid)))) |
8c47c732 LP |
1964 | if (!(u = cgroup_unit_by_pid(m, ucred->pid))) { |
1965 | log_warning("Cannot find unit for notify message of PID %lu.", (unsigned long) ucred->pid); | |
1966 | continue; | |
1967 | } | |
1968 | ||
8c40acf7 LP |
1969 | assert((size_t) n < sizeof(buf)); |
1970 | buf[n] = 0; | |
8c47c732 LP |
1971 | if (!(tags = strv_split(buf, "\n\r"))) |
1972 | return -ENOMEM; | |
1973 | ||
1974 | log_debug("Got notification message for unit %s", u->meta.id); | |
1975 | ||
1976 | if (UNIT_VTABLE(u)->notify_message) | |
c952c6ec | 1977 | UNIT_VTABLE(u)->notify_message(u, ucred->pid, tags); |
8c47c732 LP |
1978 | |
1979 | strv_free(tags); | |
1980 | } | |
1981 | ||
1982 | return 0; | |
1983 | } | |
1984 | ||
034c6ed7 | 1985 | static int manager_dispatch_sigchld(Manager *m) { |
9152c765 LP |
1986 | assert(m); |
1987 | ||
1988 | for (;;) { | |
1989 | siginfo_t si; | |
87f0e418 | 1990 | Unit *u; |
8c47c732 | 1991 | int r; |
9152c765 LP |
1992 | |
1993 | zero(si); | |
4112df16 LP |
1994 | |
1995 | /* First we call waitd() for a PID and do not reap the | |
1996 | * zombie. That way we can still access /proc/$PID for | |
1997 | * it while it is a zombie. */ | |
1998 | if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) { | |
acbb0225 LP |
1999 | |
2000 | if (errno == ECHILD) | |
2001 | break; | |
2002 | ||
4112df16 LP |
2003 | if (errno == EINTR) |
2004 | continue; | |
2005 | ||
9152c765 | 2006 | return -errno; |
acbb0225 | 2007 | } |
9152c765 | 2008 | |
4112df16 | 2009 | if (si.si_pid <= 0) |
9152c765 LP |
2010 | break; |
2011 | ||
15d5d9d9 | 2012 | if (si.si_code == CLD_EXITED || si.si_code == CLD_KILLED || si.si_code == CLD_DUMPED) { |
4112df16 LP |
2013 | char *name = NULL; |
2014 | ||
2015 | get_process_name(si.si_pid, &name); | |
bb00e604 | 2016 | log_debug("Got SIGCHLD for process %lu (%s)", (unsigned long) si.si_pid, strna(name)); |
4112df16 LP |
2017 | free(name); |
2018 | } | |
2019 | ||
8c47c732 LP |
2020 | /* Let's flush any message the dying child might still |
2021 | * have queued for us. This ensures that the process | |
2022 | * still exists in /proc so that we can figure out | |
2023 | * which cgroup and hence unit it belongs to. */ | |
2024 | if ((r = manager_process_notify_fd(m)) < 0) | |
2025 | return r; | |
2026 | ||
2027 | /* And now figure out the unit this belongs to */ | |
c6c18be3 | 2028 | if (!(u = hashmap_get(m->watch_pids, LONG_TO_PTR(si.si_pid)))) |
8c47c732 LP |
2029 | u = cgroup_unit_by_pid(m, si.si_pid); |
2030 | ||
4112df16 LP |
2031 | /* And now, we actually reap the zombie. */ |
2032 | if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) { | |
2033 | if (errno == EINTR) | |
2034 | continue; | |
2035 | ||
2036 | return -errno; | |
2037 | } | |
2038 | ||
034c6ed7 LP |
2039 | if (si.si_code != CLD_EXITED && si.si_code != CLD_KILLED && si.si_code != CLD_DUMPED) |
2040 | continue; | |
2041 | ||
bb00e604 LP |
2042 | log_debug("Child %lu died (code=%s, status=%i/%s)", |
2043 | (long unsigned) si.si_pid, | |
4112df16 LP |
2044 | sigchld_code_to_string(si.si_code), |
2045 | si.si_status, | |
d06dacd0 LP |
2046 | strna(si.si_code == CLD_EXITED |
2047 | ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL) | |
2048 | : signal_to_string(si.si_status))); | |
acbb0225 | 2049 | |
8c47c732 | 2050 | if (!u) |
9152c765 LP |
2051 | continue; |
2052 | ||
c6c18be3 | 2053 | log_debug("Child %lu belongs to %s", (long unsigned) si.si_pid, u->meta.id); |
6c1a0478 | 2054 | |
c6c18be3 | 2055 | hashmap_remove(m->watch_pids, LONG_TO_PTR(si.si_pid)); |
87f0e418 | 2056 | UNIT_VTABLE(u)->sigchld_event(u, si.si_pid, si.si_code, si.si_status); |
9152c765 LP |
2057 | } |
2058 | ||
2059 | return 0; | |
2060 | } | |
2061 | ||
7d793605 | 2062 | static int manager_start_target(Manager *m, const char *name, JobMode mode) { |
28247076 | 2063 | int r; |
398ef8ba LP |
2064 | DBusError error; |
2065 | ||
2066 | dbus_error_init(&error); | |
2067 | ||
af2d49f7 | 2068 | log_debug("Activating special unit %s", name); |
1e001f52 | 2069 | |
398ef8ba LP |
2070 | if ((r = manager_add_job_by_name(m, JOB_START, name, mode, true, &error, NULL)) < 0) |
2071 | log_error("Failed to enqueue %s job: %s", name, bus_error(&error, r)); | |
28247076 | 2072 | |
398ef8ba | 2073 | dbus_error_free(&error); |
a1b256b0 LP |
2074 | |
2075 | return r; | |
28247076 LP |
2076 | } |
2077 | ||
a16e1123 | 2078 | static int manager_process_signal_fd(Manager *m) { |
9152c765 LP |
2079 | ssize_t n; |
2080 | struct signalfd_siginfo sfsi; | |
2081 | bool sigchld = false; | |
2082 | ||
2083 | assert(m); | |
2084 | ||
2085 | for (;;) { | |
acbb0225 | 2086 | if ((n = read(m->signal_watch.fd, &sfsi, sizeof(sfsi))) != sizeof(sfsi)) { |
9152c765 LP |
2087 | |
2088 | if (n >= 0) | |
2089 | return -EIO; | |
2090 | ||
63090775 | 2091 | if (errno == EINTR || errno == EAGAIN) |
acbb0225 | 2092 | break; |
9152c765 LP |
2093 | |
2094 | return -errno; | |
2095 | } | |
2096 | ||
67370238 LP |
2097 | if (sfsi.ssi_pid > 0) { |
2098 | char *p = NULL; | |
2099 | ||
dfa7f7e1 LP |
2100 | get_process_name(sfsi.ssi_pid, &p); |
2101 | ||
67370238 LP |
2102 | log_debug("Received SIG%s from PID %lu (%s).", |
2103 | strna(signal_to_string(sfsi.ssi_signo)), | |
2104 | (unsigned long) sfsi.ssi_pid, strna(p)); | |
2105 | free(p); | |
2106 | } else | |
2107 | log_debug("Received SIG%s.", strna(signal_to_string(sfsi.ssi_signo))); | |
1e001f52 | 2108 | |
b9cd2ec1 LP |
2109 | switch (sfsi.ssi_signo) { |
2110 | ||
4112df16 | 2111 | case SIGCHLD: |
9152c765 | 2112 | sigchld = true; |
b9cd2ec1 LP |
2113 | break; |
2114 | ||
6632c602 | 2115 | case SIGTERM: |
a3d4e06d | 2116 | if (m->running_as == MANAGER_SYSTEM) { |
db06e3b6 LP |
2117 | /* This is for compatibility with the |
2118 | * original sysvinit */ | |
e11dc4a2 | 2119 | m->exit_code = MANAGER_REEXECUTE; |
a1b256b0 LP |
2120 | break; |
2121 | } | |
84e9af1e | 2122 | |
a1b256b0 | 2123 | /* Fall through */ |
e11dc4a2 LP |
2124 | |
2125 | case SIGINT: | |
a3d4e06d | 2126 | if (m->running_as == MANAGER_SYSTEM) { |
7d793605 | 2127 | manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE); |
84e9af1e LP |
2128 | break; |
2129 | } | |
2130 | ||
a1b256b0 | 2131 | /* Run the exit target if there is one, if not, just exit. */ |
0003d1ab | 2132 | if (manager_start_target(m, SPECIAL_EXIT_TARGET, JOB_REPLACE) < 0) { |
a1b256b0 LP |
2133 | m->exit_code = MANAGER_EXIT; |
2134 | return 0; | |
2135 | } | |
2136 | ||
2137 | break; | |
84e9af1e | 2138 | |
28247076 | 2139 | case SIGWINCH: |
a3d4e06d | 2140 | if (m->running_as == MANAGER_SYSTEM) |
7d793605 | 2141 | manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE); |
84e9af1e | 2142 | |
28247076 LP |
2143 | /* This is a nop on non-init */ |
2144 | break; | |
84e9af1e | 2145 | |
28247076 | 2146 | case SIGPWR: |
a3d4e06d | 2147 | if (m->running_as == MANAGER_SYSTEM) |
7d793605 | 2148 | manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE); |
84e9af1e | 2149 | |
28247076 | 2150 | /* This is a nop on non-init */ |
84e9af1e | 2151 | break; |
6632c602 | 2152 | |
1005d14f | 2153 | case SIGUSR1: { |
57ee42ce LP |
2154 | Unit *u; |
2155 | ||
2156 | u = manager_get_unit(m, SPECIAL_DBUS_SERVICE); | |
2157 | ||
2158 | if (!u || UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) { | |
2159 | log_info("Trying to reconnect to bus..."); | |
3996fbe2 | 2160 | bus_init(m, true); |
57ee42ce LP |
2161 | } |
2162 | ||
2163 | if (!u || !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) { | |
2164 | log_info("Loading D-Bus service..."); | |
7d793605 | 2165 | manager_start_target(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE); |
57ee42ce LP |
2166 | } |
2167 | ||
2168 | break; | |
2169 | } | |
2170 | ||
2149e37c LP |
2171 | case SIGUSR2: { |
2172 | FILE *f; | |
2173 | char *dump = NULL; | |
2174 | size_t size; | |
2175 | ||
2176 | if (!(f = open_memstream(&dump, &size))) { | |
2177 | log_warning("Failed to allocate memory stream."); | |
2178 | break; | |
2179 | } | |
2180 | ||
2181 | manager_dump_units(m, f, "\t"); | |
2182 | manager_dump_jobs(m, f, "\t"); | |
2183 | ||
2184 | if (ferror(f)) { | |
2185 | fclose(f); | |
2186 | free(dump); | |
2187 | log_warning("Failed to write status stream"); | |
2188 | break; | |
2189 | } | |
2190 | ||
2191 | fclose(f); | |
2192 | log_dump(LOG_INFO, dump); | |
2193 | free(dump); | |
2194 | ||
1005d14f | 2195 | break; |
2149e37c | 2196 | } |
1005d14f | 2197 | |
a16e1123 LP |
2198 | case SIGHUP: |
2199 | m->exit_code = MANAGER_RELOAD; | |
2200 | break; | |
2201 | ||
7d793605 | 2202 | default: { |
0003d1ab LP |
2203 | /* Starting SIGRTMIN+0 */ |
2204 | static const char * const target_table[] = { | |
7d793605 LP |
2205 | [0] = SPECIAL_DEFAULT_TARGET, |
2206 | [1] = SPECIAL_RESCUE_TARGET, | |
f057408c | 2207 | [2] = SPECIAL_EMERGENCY_TARGET, |
7d793605 LP |
2208 | [3] = SPECIAL_HALT_TARGET, |
2209 | [4] = SPECIAL_POWEROFF_TARGET, | |
0003d1ab LP |
2210 | [5] = SPECIAL_REBOOT_TARGET, |
2211 | [6] = SPECIAL_KEXEC_TARGET | |
2212 | }; | |
2213 | ||
2214 | /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */ | |
2215 | static const ManagerExitCode code_table[] = { | |
2216 | [0] = MANAGER_HALT, | |
2217 | [1] = MANAGER_POWEROFF, | |
2218 | [2] = MANAGER_REBOOT, | |
2219 | [3] = MANAGER_KEXEC | |
7d793605 LP |
2220 | }; |
2221 | ||
2222 | if ((int) sfsi.ssi_signo >= SIGRTMIN+0 && | |
0003d1ab LP |
2223 | (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) { |
2224 | manager_start_target(m, target_table[sfsi.ssi_signo - SIGRTMIN], | |
e6b3f00f | 2225 | (sfsi.ssi_signo == 1 || sfsi.ssi_signo == 2) ? JOB_ISOLATE : JOB_REPLACE); |
7d793605 LP |
2226 | break; |
2227 | } | |
2228 | ||
0003d1ab LP |
2229 | if ((int) sfsi.ssi_signo >= SIGRTMIN+13 && |
2230 | (int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(code_table)) { | |
2231 | m->exit_code = code_table[sfsi.ssi_signo - SIGRTMIN - 13]; | |
2232 | break; | |
2233 | } | |
2234 | ||
0658666b LP |
2235 | switch (sfsi.ssi_signo - SIGRTMIN) { |
2236 | ||
2237 | case 20: | |
2238 | log_debug("Enabling showing of status."); | |
2239 | m->show_status = true; | |
2240 | break; | |
2241 | ||
2242 | case 21: | |
2243 | log_debug("Disabling showing of status."); | |
2244 | m->show_status = false; | |
2245 | break; | |
2246 | ||
2247 | default: | |
2248 | log_warning("Got unhandled signal <%s>.", strna(signal_to_string(sfsi.ssi_signo))); | |
2249 | } | |
b9cd2ec1 | 2250 | } |
7d793605 | 2251 | } |
9152c765 LP |
2252 | } |
2253 | ||
2254 | if (sigchld) | |
034c6ed7 LP |
2255 | return manager_dispatch_sigchld(m); |
2256 | ||
2257 | return 0; | |
2258 | } | |
2259 | ||
a16e1123 | 2260 | static int process_event(Manager *m, struct epoll_event *ev) { |
034c6ed7 | 2261 | int r; |
acbb0225 | 2262 | Watch *w; |
034c6ed7 LP |
2263 | |
2264 | assert(m); | |
2265 | assert(ev); | |
2266 | ||
3df5bf61 | 2267 | assert_se(w = ev->data.ptr); |
034c6ed7 | 2268 | |
40dde66f LP |
2269 | if (w->type == WATCH_INVALID) |
2270 | return 0; | |
2271 | ||
acbb0225 | 2272 | switch (w->type) { |
034c6ed7 | 2273 | |
ef734fd6 | 2274 | case WATCH_SIGNAL: |
034c6ed7 | 2275 | |
acbb0225 | 2276 | /* An incoming signal? */ |
f94ea366 | 2277 | if (ev->events != EPOLLIN) |
acbb0225 | 2278 | return -EINVAL; |
034c6ed7 | 2279 | |
a16e1123 | 2280 | if ((r = manager_process_signal_fd(m)) < 0) |
acbb0225 | 2281 | return r; |
034c6ed7 | 2282 | |
acbb0225 | 2283 | break; |
034c6ed7 | 2284 | |
8c47c732 LP |
2285 | case WATCH_NOTIFY: |
2286 | ||
2287 | /* An incoming daemon notification event? */ | |
2288 | if (ev->events != EPOLLIN) | |
2289 | return -EINVAL; | |
2290 | ||
2291 | if ((r = manager_process_notify_fd(m)) < 0) | |
2292 | return r; | |
2293 | ||
2294 | break; | |
2295 | ||
acbb0225 | 2296 | case WATCH_FD: |
034c6ed7 | 2297 | |
acbb0225 | 2298 | /* Some fd event, to be dispatched to the units */ |
ea430986 | 2299 | UNIT_VTABLE(w->data.unit)->fd_event(w->data.unit, w->fd, ev->events, w); |
acbb0225 | 2300 | break; |
034c6ed7 | 2301 | |
faf919f1 LP |
2302 | case WATCH_UNIT_TIMER: |
2303 | case WATCH_JOB_TIMER: { | |
acbb0225 LP |
2304 | uint64_t v; |
2305 | ssize_t k; | |
034c6ed7 | 2306 | |
acbb0225 | 2307 | /* Some timer event, to be dispatched to the units */ |
be888ebb | 2308 | if ((k = read(w->fd, &v, sizeof(v))) != sizeof(v)) { |
034c6ed7 | 2309 | |
acbb0225 LP |
2310 | if (k < 0 && (errno == EINTR || errno == EAGAIN)) |
2311 | break; | |
034c6ed7 | 2312 | |
acbb0225 | 2313 | return k < 0 ? -errno : -EIO; |
034c6ed7 LP |
2314 | } |
2315 | ||
faf919f1 LP |
2316 | if (w->type == WATCH_UNIT_TIMER) |
2317 | UNIT_VTABLE(w->data.unit)->timer_event(w->data.unit, v, w); | |
2318 | else | |
2319 | job_timer_event(w->data.job, v, w); | |
acbb0225 LP |
2320 | break; |
2321 | } | |
2322 | ||
ef734fd6 LP |
2323 | case WATCH_MOUNT: |
2324 | /* Some mount table change, intended for the mount subsystem */ | |
2325 | mount_fd_event(m, ev->events); | |
2326 | break; | |
2327 | ||
4e434314 LP |
2328 | case WATCH_SWAP: |
2329 | /* Some swap table change, intended for the swap subsystem */ | |
2330 | swap_fd_event(m, ev->events); | |
2331 | break; | |
2332 | ||
f94ea366 LP |
2333 | case WATCH_UDEV: |
2334 | /* Some notification from udev, intended for the device subsystem */ | |
2335 | device_fd_event(m, ev->events); | |
2336 | break; | |
2337 | ||
ea430986 LP |
2338 | case WATCH_DBUS_WATCH: |
2339 | bus_watch_event(m, w, ev->events); | |
2340 | break; | |
2341 | ||
2342 | case WATCH_DBUS_TIMEOUT: | |
2343 | bus_timeout_event(m, w, ev->events); | |
2344 | break; | |
2345 | ||
acbb0225 | 2346 | default: |
c5fd1e57 | 2347 | log_error("event type=%i", w->type); |
acbb0225 | 2348 | assert_not_reached("Unknown epoll event type."); |
034c6ed7 | 2349 | } |
9152c765 LP |
2350 | |
2351 | return 0; | |
2352 | } | |
2353 | ||
2354 | int manager_loop(Manager *m) { | |
2355 | int r; | |
9152c765 | 2356 | |
fac9f8df | 2357 | RATELIMIT_DEFINE(rl, 1*USEC_PER_SEC, 50000); |
ea430986 | 2358 | |
9152c765 | 2359 | assert(m); |
a16e1123 | 2360 | m->exit_code = MANAGER_RUNNING; |
9152c765 | 2361 | |
fe51822e LP |
2362 | /* Release the path cache */ |
2363 | set_free_free(m->unit_path_cache); | |
2364 | m->unit_path_cache = NULL; | |
2365 | ||
b0c918b9 LP |
2366 | manager_check_finished(m); |
2367 | ||
a4312405 LP |
2368 | /* There might still be some zombies hanging around from |
2369 | * before we were exec()'ed. Leat's reap them */ | |
2370 | if ((r = manager_dispatch_sigchld(m)) < 0) | |
2371 | return r; | |
2372 | ||
a16e1123 | 2373 | while (m->exit_code == MANAGER_RUNNING) { |
957ca890 LP |
2374 | struct epoll_event event; |
2375 | int n; | |
9152c765 | 2376 | |
ea430986 LP |
2377 | if (!ratelimit_test(&rl)) { |
2378 | /* Yay, something is going seriously wrong, pause a little */ | |
2379 | log_warning("Looping too fast. Throttling execution a little."); | |
2380 | sleep(1); | |
2381 | } | |
2382 | ||
37a8e683 | 2383 | if (manager_dispatch_load_queue(m) > 0) |
23a177ef LP |
2384 | continue; |
2385 | ||
37a8e683 | 2386 | if (manager_dispatch_run_queue(m) > 0) |
701cc384 LP |
2387 | continue; |
2388 | ||
37a8e683 | 2389 | if (bus_dispatch(m) > 0) |
c1e1601e | 2390 | continue; |
034c6ed7 | 2391 | |
37a8e683 | 2392 | if (manager_dispatch_cleanup_queue(m) > 0) |
c1e1601e LP |
2393 | continue; |
2394 | ||
37a8e683 | 2395 | if (manager_dispatch_gc_queue(m) > 0) |
c1e1601e LP |
2396 | continue; |
2397 | ||
2398 | if (manager_dispatch_dbus_queue(m) > 0) | |
ea430986 | 2399 | continue; |
ea430986 | 2400 | |
e04aad61 LP |
2401 | if (swap_dispatch_reload(m) > 0) |
2402 | continue; | |
2403 | ||
957ca890 | 2404 | if ((n = epoll_wait(m->epoll_fd, &event, 1, -1)) < 0) { |
9152c765 | 2405 | |
6089f4a9 | 2406 | if (errno == EINTR) |
9152c765 LP |
2407 | continue; |
2408 | ||
2409 | return -errno; | |
2410 | } | |
2411 | ||
957ca890 | 2412 | assert(n == 1); |
b9cd2ec1 | 2413 | |
a16e1123 | 2414 | if ((r = process_event(m, &event)) < 0) |
957ca890 | 2415 | return r; |
a16e1123 | 2416 | } |
957ca890 | 2417 | |
a16e1123 | 2418 | return m->exit_code; |
83c60c9f | 2419 | } |
ea430986 LP |
2420 | |
2421 | int manager_get_unit_from_dbus_path(Manager *m, const char *s, Unit **_u) { | |
2422 | char *n; | |
2423 | Unit *u; | |
2424 | ||
2425 | assert(m); | |
2426 | assert(s); | |
2427 | assert(_u); | |
2428 | ||
2429 | if (!startswith(s, "/org/freedesktop/systemd1/unit/")) | |
2430 | return -EINVAL; | |
2431 | ||
2432 | if (!(n = bus_path_unescape(s+31))) | |
2433 | return -ENOMEM; | |
2434 | ||
2435 | u = manager_get_unit(m, n); | |
2436 | free(n); | |
2437 | ||
2438 | if (!u) | |
2439 | return -ENOENT; | |
2440 | ||
2441 | *_u = u; | |
2442 | ||
2443 | return 0; | |
2444 | } | |
86fbf370 LP |
2445 | |
2446 | int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) { | |
2447 | Job *j; | |
2448 | unsigned id; | |
2449 | int r; | |
2450 | ||
2451 | assert(m); | |
2452 | assert(s); | |
2453 | assert(_j); | |
2454 | ||
2455 | if (!startswith(s, "/org/freedesktop/systemd1/job/")) | |
2456 | return -EINVAL; | |
2457 | ||
2458 | if ((r = safe_atou(s + 30, &id)) < 0) | |
2459 | return r; | |
2460 | ||
2461 | if (!(j = manager_get_job(m, id))) | |
2462 | return -ENOENT; | |
2463 | ||
2464 | *_j = j; | |
2465 | ||
2466 | return 0; | |
2467 | } | |
dfcd764e | 2468 | |
4927fcae | 2469 | void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) { |
e537352b | 2470 | |
4927fcae LP |
2471 | #ifdef HAVE_AUDIT |
2472 | char *p; | |
e537352b | 2473 | |
4927fcae | 2474 | if (m->audit_fd < 0) |
e537352b LP |
2475 | return; |
2476 | ||
bbd3a7ba LP |
2477 | /* Don't generate audit events if the service was already |
2478 | * started and we're just deserializing */ | |
2479 | if (m->n_deserializing > 0) | |
2480 | return; | |
2481 | ||
f1dd0c3f LP |
2482 | if (m->running_as != MANAGER_SYSTEM) |
2483 | return; | |
2484 | ||
2485 | if (u->meta.type != UNIT_SERVICE) | |
2486 | return; | |
2487 | ||
4927fcae LP |
2488 | if (!(p = unit_name_to_prefix_and_instance(u->meta.id))) { |
2489 | log_error("Failed to allocate unit name for audit message: %s", strerror(ENOMEM)); | |
e537352b LP |
2490 | return; |
2491 | } | |
2492 | ||
391ade86 LP |
2493 | if (audit_log_user_comm_message(m->audit_fd, type, "", p, NULL, NULL, NULL, success) < 0) { |
2494 | log_warning("Failed to send audit message: %m"); | |
2495 | ||
2496 | if (errno == EPERM) { | |
2497 | /* We aren't allowed to send audit messages? | |
2498 | * Then let's not retry again, to avoid | |
2499 | * spamming the user with the same and same | |
2500 | * messages over and over. */ | |
2501 | ||
2502 | audit_close(m->audit_fd); | |
2503 | m->audit_fd = -1; | |
2504 | } | |
2505 | } | |
e537352b | 2506 | |
4927fcae LP |
2507 | free(p); |
2508 | #endif | |
e537352b | 2509 | |
e537352b LP |
2510 | } |
2511 | ||
e983b760 LP |
2512 | void manager_send_unit_plymouth(Manager *m, Unit *u) { |
2513 | int fd = -1; | |
2514 | union sockaddr_union sa; | |
2515 | int n = 0; | |
2516 | char *message = NULL; | |
e983b760 LP |
2517 | |
2518 | /* Don't generate plymouth events if the service was already | |
2519 | * started and we're just deserializing */ | |
2520 | if (m->n_deserializing > 0) | |
2521 | return; | |
2522 | ||
2523 | if (m->running_as != MANAGER_SYSTEM) | |
2524 | return; | |
2525 | ||
2526 | if (u->meta.type != UNIT_SERVICE && | |
2527 | u->meta.type != UNIT_MOUNT && | |
2528 | u->meta.type != UNIT_SWAP) | |
2529 | return; | |
2530 | ||
2531 | /* We set SOCK_NONBLOCK here so that we rather drop the | |
2532 | * message then wait for plymouth */ | |
2533 | if ((fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0)) < 0) { | |
2534 | log_error("socket() failed: %m"); | |
2535 | return; | |
2536 | } | |
2537 | ||
2538 | zero(sa); | |
2539 | sa.sa.sa_family = AF_UNIX; | |
96707269 LP |
2540 | strncpy(sa.un.sun_path+1, "/org/freedesktop/plymouthd", sizeof(sa.un.sun_path)-1); |
2541 | if (connect(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) { | |
e983b760 LP |
2542 | |
2543 | if (errno != EPIPE && | |
2544 | errno != EAGAIN && | |
2545 | errno != ENOENT && | |
2546 | errno != ECONNREFUSED && | |
2547 | errno != ECONNRESET && | |
2548 | errno != ECONNABORTED) | |
2549 | log_error("connect() failed: %m"); | |
2550 | ||
2551 | goto finish; | |
2552 | } | |
2553 | ||
2554 | if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->meta.id) + 1), u->meta.id, &n) < 0) { | |
2555 | log_error("Out of memory"); | |
2556 | goto finish; | |
2557 | } | |
2558 | ||
2559 | errno = 0; | |
bd40a2d8 | 2560 | if (write(fd, message, n + 1) != n + 1) { |
e983b760 LP |
2561 | |
2562 | if (errno != EPIPE && | |
2563 | errno != EAGAIN && | |
2564 | errno != ENOENT && | |
2565 | errno != ECONNREFUSED && | |
2566 | errno != ECONNRESET && | |
2567 | errno != ECONNABORTED) | |
2568 | log_error("Failed to write Plymouth message: %m"); | |
2569 | ||
2570 | goto finish; | |
2571 | } | |
2572 | ||
2573 | finish: | |
2574 | if (fd >= 0) | |
2575 | close_nointr_nofail(fd); | |
2576 | ||
2577 | free(message); | |
2578 | } | |
2579 | ||
05e343b7 LP |
2580 | void manager_dispatch_bus_name_owner_changed( |
2581 | Manager *m, | |
2582 | const char *name, | |
2583 | const char* old_owner, | |
2584 | const char *new_owner) { | |
2585 | ||
2586 | Unit *u; | |
2587 | ||
2588 | assert(m); | |
2589 | assert(name); | |
2590 | ||
2591 | if (!(u = hashmap_get(m->watch_bus, name))) | |
2592 | return; | |
2593 | ||
2594 | UNIT_VTABLE(u)->bus_name_owner_change(u, name, old_owner, new_owner); | |
2595 | } | |
2596 | ||
2597 | void manager_dispatch_bus_query_pid_done( | |
2598 | Manager *m, | |
2599 | const char *name, | |
2600 | pid_t pid) { | |
2601 | ||
2602 | Unit *u; | |
2603 | ||
2604 | assert(m); | |
2605 | assert(name); | |
2606 | assert(pid >= 1); | |
2607 | ||
2608 | if (!(u = hashmap_get(m->watch_bus, name))) | |
2609 | return; | |
2610 | ||
2611 | UNIT_VTABLE(u)->bus_query_pid_done(u, name, pid); | |
2612 | } | |
2613 | ||
d8d5ab98 | 2614 | int manager_open_serialization(Manager *m, FILE **_f) { |
b925e726 | 2615 | char *path = NULL; |
a16e1123 LP |
2616 | mode_t saved_umask; |
2617 | int fd; | |
2618 | FILE *f; | |
2619 | ||
2620 | assert(_f); | |
2621 | ||
b925e726 | 2622 | if (m->running_as == MANAGER_SYSTEM) |
2b583ce6 | 2623 | asprintf(&path, "/run/systemd/dump-%lu-XXXXXX", (unsigned long) getpid()); |
b925e726 LP |
2624 | else |
2625 | asprintf(&path, "/tmp/systemd-dump-%lu-XXXXXX", (unsigned long) getpid()); | |
d8d5ab98 | 2626 | |
b925e726 LP |
2627 | if (!path) |
2628 | return -ENOMEM; | |
a16e1123 LP |
2629 | |
2630 | saved_umask = umask(0077); | |
2631 | fd = mkostemp(path, O_RDWR|O_CLOEXEC); | |
2632 | umask(saved_umask); | |
2633 | ||
2634 | if (fd < 0) { | |
2635 | free(path); | |
2636 | return -errno; | |
2637 | } | |
2638 | ||
2639 | unlink(path); | |
2640 | ||
2641 | log_debug("Serializing state to %s", path); | |
2642 | free(path); | |
2643 | ||
da19d5c1 | 2644 | if (!(f = fdopen(fd, "w+"))) |
a16e1123 LP |
2645 | return -errno; |
2646 | ||
2647 | *_f = f; | |
2648 | ||
2649 | return 0; | |
2650 | } | |
2651 | ||
2652 | int manager_serialize(Manager *m, FILE *f, FDSet *fds) { | |
2653 | Iterator i; | |
2654 | Unit *u; | |
2655 | const char *t; | |
2656 | int r; | |
2657 | ||
2658 | assert(m); | |
2659 | assert(f); | |
2660 | assert(fds); | |
2661 | ||
38c52d46 LP |
2662 | m->n_serializing ++; |
2663 | ||
01d67b43 LP |
2664 | fprintf(f, "current-job-id=%i\n", m->current_job_id); |
2665 | fprintf(f, "taint-usr=%s\n", yes_no(m->taint_usr)); | |
2666 | ||
e9ddabc2 | 2667 | dual_timestamp_serialize(f, "initrd-timestamp", &m->initrd_timestamp); |
10717a1a LP |
2668 | dual_timestamp_serialize(f, "startup-timestamp", &m->startup_timestamp); |
2669 | dual_timestamp_serialize(f, "finish-timestamp", &m->finish_timestamp); | |
47a483a1 | 2670 | |
f2382a94 LP |
2671 | fputc('\n', f); |
2672 | ||
a16e1123 LP |
2673 | HASHMAP_FOREACH_KEY(u, t, m->units, i) { |
2674 | if (u->meta.id != t) | |
2675 | continue; | |
2676 | ||
2677 | if (!unit_can_serialize(u)) | |
2678 | continue; | |
2679 | ||
2680 | /* Start marker */ | |
2681 | fputs(u->meta.id, f); | |
2682 | fputc('\n', f); | |
2683 | ||
38c52d46 LP |
2684 | if ((r = unit_serialize(u, f, fds)) < 0) { |
2685 | m->n_serializing --; | |
a16e1123 | 2686 | return r; |
38c52d46 | 2687 | } |
a16e1123 LP |
2688 | } |
2689 | ||
38c52d46 LP |
2690 | assert(m->n_serializing > 0); |
2691 | m->n_serializing --; | |
2692 | ||
a16e1123 LP |
2693 | if (ferror(f)) |
2694 | return -EIO; | |
2695 | ||
b23de6af LP |
2696 | r = bus_fdset_add_all(m, fds); |
2697 | if (r < 0) | |
2698 | return r; | |
2699 | ||
a16e1123 LP |
2700 | return 0; |
2701 | } | |
2702 | ||
2703 | int manager_deserialize(Manager *m, FILE *f, FDSet *fds) { | |
2704 | int r = 0; | |
2705 | ||
2706 | assert(m); | |
2707 | assert(f); | |
2708 | ||
2709 | log_debug("Deserializing state..."); | |
2710 | ||
9f611ad8 | 2711 | m->n_deserializing ++; |
82c64bf5 | 2712 | |
10f8e83c | 2713 | for (;;) { |
20c03b7b | 2714 | char line[LINE_MAX], *l; |
10f8e83c LP |
2715 | |
2716 | if (!fgets(line, sizeof(line), f)) { | |
2717 | if (feof(f)) | |
2718 | r = 0; | |
2719 | else | |
2720 | r = -errno; | |
2721 | ||
2722 | goto finish; | |
2723 | } | |
2724 | ||
2725 | char_array_0(line); | |
2726 | l = strstrip(line); | |
2727 | ||
2728 | if (l[0] == 0) | |
2729 | break; | |
2730 | ||
01d67b43 LP |
2731 | if (startswith(l, "current-job-id=")) { |
2732 | uint32_t id; | |
2733 | ||
2734 | if (safe_atou32(l+15, &id) < 0) | |
2735 | log_debug("Failed to parse current job id value %s", l+15); | |
2736 | else | |
2737 | m->current_job_id = MAX(m->current_job_id, id); | |
2738 | } else if (startswith(l, "taint-usr=")) { | |
2739 | int b; | |
2740 | ||
2741 | if ((b = parse_boolean(l+10)) < 0) | |
2742 | log_debug("Failed to parse taint /usr flag %s", l+10); | |
2743 | else | |
2744 | m->taint_usr = m->taint_usr || b; | |
2745 | } else if (startswith(l, "initrd-timestamp=")) | |
e9ddabc2 LP |
2746 | dual_timestamp_deserialize(l+17, &m->initrd_timestamp); |
2747 | else if (startswith(l, "startup-timestamp=")) | |
799fd0fd | 2748 | dual_timestamp_deserialize(l+18, &m->startup_timestamp); |
10717a1a | 2749 | else if (startswith(l, "finish-timestamp=")) |
799fd0fd | 2750 | dual_timestamp_deserialize(l+17, &m->finish_timestamp); |
10717a1a | 2751 | else |
10f8e83c LP |
2752 | log_debug("Unknown serialization item '%s'", l); |
2753 | } | |
2754 | ||
a16e1123 LP |
2755 | for (;;) { |
2756 | Unit *u; | |
2757 | char name[UNIT_NAME_MAX+2]; | |
2758 | ||
2759 | /* Start marker */ | |
2760 | if (!fgets(name, sizeof(name), f)) { | |
2761 | if (feof(f)) | |
10f8e83c LP |
2762 | r = 0; |
2763 | else | |
2764 | r = -errno; | |
a16e1123 | 2765 | |
82c64bf5 | 2766 | goto finish; |
a16e1123 LP |
2767 | } |
2768 | ||
2769 | char_array_0(name); | |
2770 | ||
398ef8ba | 2771 | if ((r = manager_load_unit(m, strstrip(name), NULL, NULL, &u)) < 0) |
82c64bf5 | 2772 | goto finish; |
a16e1123 LP |
2773 | |
2774 | if ((r = unit_deserialize(u, f, fds)) < 0) | |
82c64bf5 | 2775 | goto finish; |
a16e1123 LP |
2776 | } |
2777 | ||
10f8e83c | 2778 | finish: |
82c64bf5 LP |
2779 | if (ferror(f)) { |
2780 | r = -EIO; | |
2781 | goto finish; | |
2782 | } | |
a16e1123 | 2783 | |
9f611ad8 LP |
2784 | assert(m->n_deserializing > 0); |
2785 | m->n_deserializing --; | |
82c64bf5 LP |
2786 | |
2787 | return r; | |
a16e1123 LP |
2788 | } |
2789 | ||
2790 | int manager_reload(Manager *m) { | |
2791 | int r, q; | |
2792 | FILE *f; | |
2793 | FDSet *fds; | |
2794 | ||
2795 | assert(m); | |
2796 | ||
d8d5ab98 | 2797 | if ((r = manager_open_serialization(m, &f)) < 0) |
a16e1123 LP |
2798 | return r; |
2799 | ||
38c52d46 LP |
2800 | m->n_serializing ++; |
2801 | ||
a16e1123 | 2802 | if (!(fds = fdset_new())) { |
38c52d46 | 2803 | m->n_serializing --; |
a16e1123 LP |
2804 | r = -ENOMEM; |
2805 | goto finish; | |
2806 | } | |
2807 | ||
38c52d46 LP |
2808 | if ((r = manager_serialize(m, f, fds)) < 0) { |
2809 | m->n_serializing --; | |
a16e1123 | 2810 | goto finish; |
38c52d46 | 2811 | } |
a16e1123 LP |
2812 | |
2813 | if (fseeko(f, 0, SEEK_SET) < 0) { | |
38c52d46 | 2814 | m->n_serializing --; |
a16e1123 LP |
2815 | r = -errno; |
2816 | goto finish; | |
2817 | } | |
2818 | ||
2819 | /* From here on there is no way back. */ | |
2820 | manager_clear_jobs_and_units(m); | |
5a1e9937 | 2821 | manager_undo_generators(m); |
a16e1123 | 2822 | |
38c52d46 LP |
2823 | assert(m->n_serializing > 0); |
2824 | m->n_serializing --; | |
2825 | ||
2ded0c04 | 2826 | /* Find new unit paths */ |
84e3543e LP |
2827 | lookup_paths_free(&m->lookup_paths); |
2828 | if ((q = lookup_paths_init(&m->lookup_paths, m->running_as)) < 0) | |
2ded0c04 LP |
2829 | r = q; |
2830 | ||
5a1e9937 LP |
2831 | manager_run_generators(m); |
2832 | ||
2833 | manager_build_unit_path_cache(m); | |
2834 | ||
9f611ad8 LP |
2835 | m->n_deserializing ++; |
2836 | ||
a16e1123 LP |
2837 | /* First, enumerate what we can from all config files */ |
2838 | if ((q = manager_enumerate(m)) < 0) | |
2839 | r = q; | |
2840 | ||
2841 | /* Second, deserialize our stored data */ | |
2842 | if ((q = manager_deserialize(m, f, fds)) < 0) | |
2843 | r = q; | |
2844 | ||
2845 | fclose(f); | |
2846 | f = NULL; | |
2847 | ||
2848 | /* Third, fire things up! */ | |
2849 | if ((q = manager_coldplug(m)) < 0) | |
2850 | r = q; | |
2851 | ||
9f611ad8 | 2852 | assert(m->n_deserializing > 0); |
2121dcdd | 2853 | m->n_deserializing--; |
9f611ad8 | 2854 | |
a16e1123 LP |
2855 | finish: |
2856 | if (f) | |
2857 | fclose(f); | |
2858 | ||
2859 | if (fds) | |
2860 | fdset_free(fds); | |
2861 | ||
2862 | return r; | |
2863 | } | |
2864 | ||
9e58ff9c LP |
2865 | bool manager_is_booting_or_shutting_down(Manager *m) { |
2866 | Unit *u; | |
2867 | ||
2868 | assert(m); | |
2869 | ||
2870 | /* Is the initial job still around? */ | |
2871 | if (manager_get_job(m, 1)) | |
2872 | return true; | |
2873 | ||
2874 | /* Is there a job for the shutdown target? */ | |
2875 | if (((u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET)))) | |
2876 | return !!u->meta.job; | |
2877 | ||
2878 | return false; | |
2879 | } | |
2880 | ||
fdf20a31 | 2881 | void manager_reset_failed(Manager *m) { |
5632e374 LP |
2882 | Unit *u; |
2883 | Iterator i; | |
2884 | ||
2885 | assert(m); | |
2886 | ||
2887 | HASHMAP_FOREACH(u, m->units, i) | |
fdf20a31 | 2888 | unit_reset_failed(u); |
5632e374 LP |
2889 | } |
2890 | ||
8f6df3fa LP |
2891 | bool manager_unit_pending_inactive(Manager *m, const char *name) { |
2892 | Unit *u; | |
2893 | ||
2894 | assert(m); | |
2895 | assert(name); | |
2896 | ||
2897 | /* Returns true if the unit is inactive or going down */ | |
8f6df3fa LP |
2898 | if (!(u = manager_get_unit(m, name))) |
2899 | return true; | |
2900 | ||
18ffdfda | 2901 | return unit_pending_inactive(u); |
8f6df3fa LP |
2902 | } |
2903 | ||
b0c918b9 | 2904 | void manager_check_finished(Manager *m) { |
e9ddabc2 | 2905 | char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX]; |
18fa6b27 | 2906 | usec_t kernel_usec = 0, initrd_usec = 0, userspace_usec = 0, total_usec = 0; |
b0c918b9 LP |
2907 | |
2908 | assert(m); | |
2909 | ||
2910 | if (dual_timestamp_is_set(&m->finish_timestamp)) | |
2911 | return; | |
2912 | ||
2913 | if (hashmap_size(m->jobs) > 0) | |
2914 | return; | |
2915 | ||
2916 | dual_timestamp_get(&m->finish_timestamp); | |
2917 | ||
e03ae661 LP |
2918 | if (m->running_as == MANAGER_SYSTEM && detect_container(NULL) <= 0) { |
2919 | ||
18fa6b27 LP |
2920 | userspace_usec = m->finish_timestamp.monotonic - m->startup_timestamp.monotonic; |
2921 | total_usec = m->finish_timestamp.monotonic; | |
2922 | ||
e9ddabc2 | 2923 | if (dual_timestamp_is_set(&m->initrd_timestamp)) { |
18fa6b27 LP |
2924 | |
2925 | kernel_usec = m->initrd_timestamp.monotonic; | |
2926 | initrd_usec = m->startup_timestamp.monotonic - m->initrd_timestamp.monotonic; | |
2927 | ||
e9ddabc2 | 2928 | log_info("Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.", |
18fa6b27 LP |
2929 | format_timespan(kernel, sizeof(kernel), kernel_usec), |
2930 | format_timespan(initrd, sizeof(initrd), initrd_usec), | |
2931 | format_timespan(userspace, sizeof(userspace), userspace_usec), | |
2932 | format_timespan(sum, sizeof(sum), total_usec)); | |
2933 | } else { | |
2934 | kernel_usec = m->startup_timestamp.monotonic; | |
2935 | initrd_usec = 0; | |
2936 | ||
e9ddabc2 | 2937 | log_info("Startup finished in %s (kernel) + %s (userspace) = %s.", |
18fa6b27 LP |
2938 | format_timespan(kernel, sizeof(kernel), kernel_usec), |
2939 | format_timespan(userspace, sizeof(userspace), userspace_usec), | |
2940 | format_timespan(sum, sizeof(sum), total_usec)); | |
2941 | } | |
2942 | } else { | |
2943 | userspace_usec = initrd_usec = kernel_usec = 0; | |
2944 | total_usec = m->finish_timestamp.monotonic - m->startup_timestamp.monotonic; | |
2945 | ||
b0c918b9 | 2946 | log_debug("Startup finished in %s.", |
18fa6b27 LP |
2947 | format_timespan(sum, sizeof(sum), total_usec)); |
2948 | } | |
b0c918b9 | 2949 | |
18fa6b27 | 2950 | bus_broadcast_finished(m, kernel_usec, initrd_usec, userspace_usec, total_usec); |
530345e7 LP |
2951 | |
2952 | sd_notifyf(false, | |
2953 | "READY=1\nSTATUS=Startup finished in %s.", | |
2954 | format_timespan(sum, sizeof(sum), total_usec)); | |
b0c918b9 LP |
2955 | } |
2956 | ||
5a1e9937 LP |
2957 | void manager_run_generators(Manager *m) { |
2958 | DIR *d = NULL; | |
5a1e9937 | 2959 | const char *generator_path; |
83cc030f | 2960 | const char *argv[3]; |
5a1e9937 LP |
2961 | |
2962 | assert(m); | |
2963 | ||
af2d49f7 | 2964 | generator_path = m->running_as == MANAGER_SYSTEM ? SYSTEM_GENERATOR_PATH : USER_GENERATOR_PATH; |
5a1e9937 LP |
2965 | if (!(d = opendir(generator_path))) { |
2966 | ||
2967 | if (errno == ENOENT) | |
2968 | return; | |
2969 | ||
2970 | log_error("Failed to enumerate generator directory: %m"); | |
2971 | return; | |
2972 | } | |
2973 | ||
2974 | if (!m->generator_unit_path) { | |
f1d19aa4 LP |
2975 | const char *p; |
2976 | char user_path[] = "/tmp/systemd-generator-XXXXXX"; | |
5a1e9937 | 2977 | |
a08dab55 | 2978 | if (m->running_as == MANAGER_SYSTEM && getpid() == 1) { |
f1d19aa4 LP |
2979 | p = "/run/systemd/generator"; |
2980 | ||
2981 | if (mkdir_p(p, 0755) < 0) { | |
2982 | log_error("Failed to create generator directory: %m"); | |
2983 | goto finish; | |
2984 | } | |
2985 | ||
2986 | } else { | |
2987 | if (!(p = mkdtemp(user_path))) { | |
2988 | log_error("Failed to create generator directory: %m"); | |
2989 | goto finish; | |
2990 | } | |
5a1e9937 LP |
2991 | } |
2992 | ||
2993 | if (!(m->generator_unit_path = strdup(p))) { | |
2994 | log_error("Failed to allocate generator unit path."); | |
2995 | goto finish; | |
2996 | } | |
2997 | } | |
2998 | ||
83cc030f LP |
2999 | argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */ |
3000 | argv[1] = m->generator_unit_path; | |
3001 | argv[2] = NULL; | |
5a1e9937 | 3002 | |
83cc030f | 3003 | execute_directory(generator_path, d, (char**) argv); |
5a1e9937 LP |
3004 | |
3005 | if (rmdir(m->generator_unit_path) >= 0) { | |
3006 | /* Uh? we were able to remove this dir? I guess that | |
3007 | * means the directory was empty, hence let's shortcut | |
3008 | * this */ | |
3009 | ||
3010 | free(m->generator_unit_path); | |
3011 | m->generator_unit_path = NULL; | |
3012 | goto finish; | |
3013 | } | |
3014 | ||
3015 | if (!strv_find(m->lookup_paths.unit_path, m->generator_unit_path)) { | |
3016 | char **l; | |
3017 | ||
3018 | if (!(l = strv_append(m->lookup_paths.unit_path, m->generator_unit_path))) { | |
3019 | log_error("Failed to add generator directory to unit search path: %m"); | |
3020 | goto finish; | |
3021 | } | |
3022 | ||
3023 | strv_free(m->lookup_paths.unit_path); | |
3024 | m->lookup_paths.unit_path = l; | |
7f4e0805 LP |
3025 | |
3026 | log_debug("Added generator unit path %s to search path.", m->generator_unit_path); | |
5a1e9937 LP |
3027 | } |
3028 | ||
3029 | finish: | |
3030 | if (d) | |
3031 | closedir(d); | |
5a1e9937 LP |
3032 | } |
3033 | ||
3034 | void manager_undo_generators(Manager *m) { | |
3035 | assert(m); | |
3036 | ||
3037 | if (!m->generator_unit_path) | |
3038 | return; | |
3039 | ||
3040 | strv_remove(m->lookup_paths.unit_path, m->generator_unit_path); | |
3041 | rm_rf(m->generator_unit_path, false, true); | |
3042 | ||
3043 | free(m->generator_unit_path); | |
3044 | m->generator_unit_path = NULL; | |
3045 | } | |
3046 | ||
06d4c99a LP |
3047 | int manager_set_default_controllers(Manager *m, char **controllers) { |
3048 | char **l; | |
3049 | ||
3050 | assert(m); | |
3051 | ||
3052 | if (!(l = strv_copy(controllers))) | |
3053 | return -ENOMEM; | |
3054 | ||
3055 | strv_free(m->default_controllers); | |
3056 | m->default_controllers = l; | |
3057 | ||
3058 | return 0; | |
3059 | } | |
3060 | ||
f1dd0c3f LP |
3061 | void manager_recheck_syslog(Manager *m) { |
3062 | Unit *u; | |
3063 | ||
3064 | assert(m); | |
3065 | ||
3066 | if (m->running_as != MANAGER_SYSTEM) | |
3067 | return; | |
3068 | ||
3069 | if ((u = manager_get_unit(m, SPECIAL_SYSLOG_SOCKET))) { | |
3070 | SocketState state; | |
3071 | ||
3072 | state = SOCKET(u)->state; | |
3073 | ||
3074 | if (state != SOCKET_DEAD && | |
3075 | state != SOCKET_FAILED && | |
3076 | state != SOCKET_RUNNING) { | |
3077 | ||
3078 | /* Hmm, the socket is not set up, or is still | |
3079 | * listening, let's better not try to use | |
3080 | * it. Note that we have no problem if the | |
3081 | * socket is completely down, since there | |
3082 | * might be a foreign /dev/log socket around | |
3083 | * and we want to make use of that. | |
3084 | */ | |
3085 | ||
3086 | log_close_syslog(); | |
3087 | return; | |
3088 | } | |
3089 | } | |
3090 | ||
3091 | if ((u = manager_get_unit(m, SPECIAL_SYSLOG_TARGET))) | |
3092 | if (TARGET(u)->state != TARGET_ACTIVE) { | |
3093 | log_close_syslog(); | |
3094 | return; | |
3095 | } | |
3096 | ||
3097 | /* Hmm, OK, so the socket is either fully up, or fully down, | |
3098 | * and the target is up, then let's make use of the socket */ | |
3099 | log_open(); | |
3100 | } | |
3101 | ||
dfcd764e | 3102 | static const char* const manager_running_as_table[_MANAGER_RUNNING_AS_MAX] = { |
dfcd764e | 3103 | [MANAGER_SYSTEM] = "system", |
af2d49f7 | 3104 | [MANAGER_USER] = "user" |
dfcd764e LP |
3105 | }; |
3106 | ||
3107 | DEFINE_STRING_TABLE_LOOKUP(manager_running_as, ManagerRunningAs); |