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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; | |
1d6702e8 LP |
79 | int one = 1, r; |
80 | mode_t u; | |
8c47c732 LP |
81 | |
82 | assert(m); | |
83 | ||
84 | m->notify_watch.type = WATCH_NOTIFY; | |
85 | if ((m->notify_watch.fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0)) < 0) { | |
86 | log_error("Failed to allocate notification socket: %m"); | |
87 | return -errno; | |
88 | } | |
89 | ||
90 | zero(sa); | |
91 | sa.sa.sa_family = AF_UNIX; | |
92 | ||
a821caaa | 93 | if (getpid() != 1) |
91b22f21 | 94 | snprintf(sa.un.sun_path, sizeof(sa.un.sun_path), NOTIFY_SOCKET_USER "/%llu", random_ull()); |
6f79c579 LP |
95 | else { |
96 | unlink(NOTIFY_SOCKET_SYSTEM); | |
91b22f21 | 97 | strncpy(sa.un.sun_path, NOTIFY_SOCKET_SYSTEM, sizeof(sa.un.sun_path)); |
6f79c579 | 98 | } |
91b22f21 LP |
99 | |
100 | if (sa.un.sun_path[0] == '@') | |
101 | sa.un.sun_path[0] = 0; | |
8c47c732 | 102 | |
1d6702e8 LP |
103 | u = umask(0111); |
104 | r = bind(m->notify_watch.fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)); | |
105 | umask(u); | |
106 | ||
107 | if (r < 0) { | |
8c47c732 LP |
108 | log_error("bind() failed: %m"); |
109 | return -errno; | |
110 | } | |
111 | ||
112 | if (setsockopt(m->notify_watch.fd, SOL_SOCKET, SO_PASSCRED, &one, sizeof(one)) < 0) { | |
113 | log_error("SO_PASSCRED failed: %m"); | |
114 | return -errno; | |
115 | } | |
116 | ||
117 | zero(ev); | |
118 | ev.events = EPOLLIN; | |
119 | ev.data.ptr = &m->notify_watch; | |
120 | ||
121 | if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->notify_watch.fd, &ev) < 0) | |
122 | return -errno; | |
123 | ||
91b22f21 LP |
124 | if (sa.un.sun_path[0] == 0) |
125 | sa.un.sun_path[0] = '@'; | |
126 | ||
127 | if (!(m->notify_socket = strdup(sa.un.sun_path))) | |
8c47c732 LP |
128 | return -ENOMEM; |
129 | ||
b2bb3dbe LP |
130 | log_debug("Using notification socket %s", m->notify_socket); |
131 | ||
8c47c732 LP |
132 | return 0; |
133 | } | |
134 | ||
80876c20 | 135 | static int enable_special_signals(Manager *m) { |
4466ee6a | 136 | int fd; |
80876c20 LP |
137 | |
138 | assert(m); | |
139 | ||
140 | /* Enable that we get SIGINT on control-alt-del */ | |
141 | if (reboot(RB_DISABLE_CAD) < 0) | |
142 | log_warning("Failed to enable ctrl-alt-del handling: %m"); | |
143 | ||
ccaa6149 | 144 | if ((fd = open_terminal("/dev/tty0", O_RDWR|O_NOCTTY|O_CLOEXEC)) < 0) |
80876c20 LP |
145 | log_warning("Failed to open /dev/tty0: %m"); |
146 | else { | |
147 | /* Enable that we get SIGWINCH on kbrequest */ | |
148 | if (ioctl(fd, KDSIGACCEPT, SIGWINCH) < 0) | |
149 | log_warning("Failed to enable kbrequest handling: %s", strerror(errno)); | |
150 | ||
151 | close_nointr_nofail(fd); | |
152 | } | |
153 | ||
154 | return 0; | |
155 | } | |
156 | ||
ce578209 | 157 | static int manager_setup_signals(Manager *m) { |
9152c765 LP |
158 | sigset_t mask; |
159 | struct epoll_event ev; | |
57c0c30e | 160 | struct sigaction sa; |
60918275 | 161 | |
ce578209 LP |
162 | assert(m); |
163 | ||
57c0c30e LP |
164 | /* We are not interested in SIGSTOP and friends. */ |
165 | zero(sa); | |
166 | sa.sa_handler = SIG_DFL; | |
167 | sa.sa_flags = SA_NOCLDSTOP|SA_RESTART; | |
168 | assert_se(sigaction(SIGCHLD, &sa, NULL) == 0); | |
169 | ||
ce578209 | 170 | assert_se(sigemptyset(&mask) == 0); |
7d793605 LP |
171 | |
172 | sigset_add_many(&mask, | |
173 | SIGCHLD, /* Child died */ | |
174 | SIGTERM, /* Reexecute daemon */ | |
175 | SIGHUP, /* Reload configuration */ | |
176 | SIGUSR1, /* systemd/upstart: reconnect to D-Bus */ | |
177 | SIGUSR2, /* systemd: dump status */ | |
178 | SIGINT, /* Kernel sends us this on control-alt-del */ | |
179 | SIGWINCH, /* Kernel sends us this on kbrequest (alt-arrowup) */ | |
180 | SIGPWR, /* Some kernel drivers and upsd send us this on power failure */ | |
181 | SIGRTMIN+0, /* systemd: start default.target */ | |
0003d1ab | 182 | SIGRTMIN+1, /* systemd: isolate rescue.target */ |
7d793605 LP |
183 | SIGRTMIN+2, /* systemd: isolate emergency.target */ |
184 | SIGRTMIN+3, /* systemd: start halt.target */ | |
185 | SIGRTMIN+4, /* systemd: start poweroff.target */ | |
186 | SIGRTMIN+5, /* systemd: start reboot.target */ | |
0003d1ab LP |
187 | SIGRTMIN+6, /* systemd: start kexec.target */ |
188 | SIGRTMIN+13, /* systemd: Immediate halt */ | |
189 | SIGRTMIN+14, /* systemd: Immediate poweroff */ | |
190 | SIGRTMIN+15, /* systemd: Immediate reboot */ | |
191 | SIGRTMIN+16, /* systemd: Immediate kexec */ | |
0658666b LP |
192 | SIGRTMIN+20, /* systemd: enable status messages */ |
193 | SIGRTMIN+21, /* systemd: disable status messages */ | |
253ee27a LP |
194 | SIGRTMIN+22, /* systemd: set log level to LOG_DEBUG */ |
195 | SIGRTMIN+23, /* systemd: set log level to LOG_INFO */ | |
196 | SIGRTMIN+27, /* systemd: set log target to console */ | |
197 | SIGRTMIN+28, /* systemd: set log target to kmsg */ | |
198 | SIGRTMIN+29, /* systemd: set log target to syslog-or-kmsg */ | |
7d793605 | 199 | -1); |
ce578209 LP |
200 | assert_se(sigprocmask(SIG_SETMASK, &mask, NULL) == 0); |
201 | ||
ef734fd6 | 202 | m->signal_watch.type = WATCH_SIGNAL; |
ce578209 LP |
203 | if ((m->signal_watch.fd = signalfd(-1, &mask, SFD_NONBLOCK|SFD_CLOEXEC)) < 0) |
204 | return -errno; | |
205 | ||
206 | zero(ev); | |
207 | ev.events = EPOLLIN; | |
208 | ev.data.ptr = &m->signal_watch; | |
209 | ||
210 | if (epoll_ctl(m->epoll_fd, EPOLL_CTL_ADD, m->signal_watch.fd, &ev) < 0) | |
211 | return -errno; | |
212 | ||
a3d4e06d | 213 | if (m->running_as == MANAGER_SYSTEM) |
80876c20 | 214 | return enable_special_signals(m); |
e1414003 | 215 | |
ce578209 LP |
216 | return 0; |
217 | } | |
218 | ||
9e58ff9c | 219 | int manager_new(ManagerRunningAs running_as, Manager **_m) { |
ce578209 | 220 | Manager *m; |
8e274523 LP |
221 | int r = -ENOMEM; |
222 | ||
223 | assert(_m); | |
a5dab5ce LP |
224 | assert(running_as >= 0); |
225 | assert(running_as < _MANAGER_RUNNING_AS_MAX); | |
ce578209 | 226 | |
60918275 | 227 | if (!(m = new0(Manager, 1))) |
8e274523 | 228 | return -ENOMEM; |
60918275 | 229 | |
63983207 | 230 | dual_timestamp_get(&m->startup_timestamp); |
e537352b | 231 | |
a5dab5ce | 232 | m->running_as = running_as; |
a567261a | 233 | m->name_data_slot = m->subscribed_data_slot = -1; |
a16e1123 | 234 | m->exit_code = _MANAGER_EXIT_CODE_INVALID; |
33be102a | 235 | m->pin_cgroupfs_fd = -1; |
80876c20 | 236 | |
4927fcae LP |
237 | #ifdef HAVE_AUDIT |
238 | m->audit_fd = -1; | |
239 | #endif | |
240 | ||
4e434314 | 241 | 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 | 242 | m->current_job_id = 1; /* start as id #1, so that we can leave #0 around as "null-like" value */ |
9152c765 | 243 | |
1137a57c LP |
244 | if (!(m->environment = strv_copy(environ))) |
245 | goto fail; | |
246 | ||
06d4c99a LP |
247 | if (!(m->default_controllers = strv_new("cpu", NULL))) |
248 | goto fail; | |
249 | ||
87f0e418 | 250 | if (!(m->units = hashmap_new(string_hash_func, string_compare_func))) |
60918275 LP |
251 | goto fail; |
252 | ||
253 | if (!(m->jobs = hashmap_new(trivial_hash_func, trivial_compare_func))) | |
254 | goto fail; | |
255 | ||
e5b5ae50 | 256 | if (!(m->transaction_jobs = hashmap_new(trivial_hash_func, trivial_compare_func))) |
60918275 LP |
257 | goto fail; |
258 | ||
9152c765 LP |
259 | if (!(m->watch_pids = hashmap_new(trivial_hash_func, trivial_compare_func))) |
260 | goto fail; | |
261 | ||
8e274523 LP |
262 | if (!(m->cgroup_bondings = hashmap_new(string_hash_func, string_compare_func))) |
263 | goto fail; | |
264 | ||
05e343b7 LP |
265 | if (!(m->watch_bus = hashmap_new(string_hash_func, string_compare_func))) |
266 | goto fail; | |
267 | ||
9152c765 LP |
268 | if ((m->epoll_fd = epoll_create1(EPOLL_CLOEXEC)) < 0) |
269 | goto fail; | |
270 | ||
c800e483 | 271 | if ((r = lookup_paths_init(&m->lookup_paths, m->running_as, true)) < 0) |
e1414003 LP |
272 | goto fail; |
273 | ||
8e274523 LP |
274 | if ((r = manager_setup_signals(m)) < 0) |
275 | goto fail; | |
276 | ||
8e274523 | 277 | if ((r = manager_setup_cgroup(m)) < 0) |
9152c765 LP |
278 | goto fail; |
279 | ||
8c47c732 LP |
280 | if ((r = manager_setup_notify(m)) < 0) |
281 | goto fail; | |
282 | ||
f278026d | 283 | /* Try to connect to the busses, if possible. */ |
3996fbe2 | 284 | if ((r = bus_init(m, running_as != MANAGER_SYSTEM)) < 0) |
ea430986 LP |
285 | goto fail; |
286 | ||
e543deae | 287 | #ifdef HAVE_AUDIT |
4927fcae LP |
288 | if ((m->audit_fd = audit_open()) < 0) |
289 | log_error("Failed to connect to audit log: %m"); | |
e543deae | 290 | #endif |
4927fcae | 291 | |
72bc8d00 LP |
292 | m->taint_usr = dir_is_empty("/usr") > 0; |
293 | ||
8e274523 LP |
294 | *_m = m; |
295 | return 0; | |
60918275 LP |
296 | |
297 | fail: | |
298 | manager_free(m); | |
8e274523 | 299 | return r; |
60918275 LP |
300 | } |
301 | ||
23a177ef LP |
302 | static unsigned manager_dispatch_cleanup_queue(Manager *m) { |
303 | Meta *meta; | |
304 | unsigned n = 0; | |
305 | ||
306 | assert(m); | |
307 | ||
308 | while ((meta = m->cleanup_queue)) { | |
309 | assert(meta->in_cleanup_queue); | |
310 | ||
399ab2b1 | 311 | unit_free((Unit*) meta); |
23a177ef LP |
312 | n++; |
313 | } | |
314 | ||
315 | return n; | |
316 | } | |
317 | ||
eced69b3 | 318 | enum { |
35b8ca3a | 319 | GC_OFFSET_IN_PATH, /* This one is on the path we were traveling */ |
eced69b3 LP |
320 | GC_OFFSET_UNSURE, /* No clue */ |
321 | GC_OFFSET_GOOD, /* We still need this unit */ | |
322 | GC_OFFSET_BAD, /* We don't need this unit anymore */ | |
323 | _GC_OFFSET_MAX | |
324 | }; | |
325 | ||
326 | static void unit_gc_sweep(Unit *u, unsigned gc_marker) { | |
701cc384 LP |
327 | Iterator i; |
328 | Unit *other; | |
eced69b3 | 329 | bool is_bad; |
701cc384 LP |
330 | |
331 | assert(u); | |
332 | ||
eced69b3 LP |
333 | if (u->meta.gc_marker == gc_marker + GC_OFFSET_GOOD || |
334 | u->meta.gc_marker == gc_marker + GC_OFFSET_BAD || | |
335 | u->meta.gc_marker == gc_marker + GC_OFFSET_IN_PATH) | |
701cc384 LP |
336 | return; |
337 | ||
c9c0cadb | 338 | if (u->meta.in_cleanup_queue) |
701cc384 LP |
339 | goto bad; |
340 | ||
341 | if (unit_check_gc(u)) | |
342 | goto good; | |
343 | ||
eced69b3 LP |
344 | u->meta.gc_marker = gc_marker + GC_OFFSET_IN_PATH; |
345 | ||
346 | is_bad = true; | |
347 | ||
701cc384 LP |
348 | SET_FOREACH(other, u->meta.dependencies[UNIT_REFERENCED_BY], i) { |
349 | unit_gc_sweep(other, gc_marker); | |
350 | ||
eced69b3 | 351 | if (other->meta.gc_marker == gc_marker + GC_OFFSET_GOOD) |
701cc384 | 352 | goto good; |
eced69b3 LP |
353 | |
354 | if (other->meta.gc_marker != gc_marker + GC_OFFSET_BAD) | |
355 | is_bad = false; | |
701cc384 LP |
356 | } |
357 | ||
eced69b3 LP |
358 | if (is_bad) |
359 | goto bad; | |
360 | ||
361 | /* We were unable to find anything out about this entry, so | |
362 | * let's investigate it later */ | |
363 | u->meta.gc_marker = gc_marker + GC_OFFSET_UNSURE; | |
364 | unit_add_to_gc_queue(u); | |
365 | return; | |
366 | ||
701cc384 | 367 | bad: |
eced69b3 LP |
368 | /* We definitely know that this one is not useful anymore, so |
369 | * let's mark it for deletion */ | |
370 | u->meta.gc_marker = gc_marker + GC_OFFSET_BAD; | |
371 | unit_add_to_cleanup_queue(u); | |
701cc384 LP |
372 | return; |
373 | ||
374 | good: | |
eced69b3 | 375 | u->meta.gc_marker = gc_marker + GC_OFFSET_GOOD; |
701cc384 LP |
376 | } |
377 | ||
378 | static unsigned manager_dispatch_gc_queue(Manager *m) { | |
379 | Meta *meta; | |
380 | unsigned n = 0; | |
eced69b3 | 381 | unsigned gc_marker; |
701cc384 LP |
382 | |
383 | assert(m); | |
384 | ||
385 | if ((m->n_in_gc_queue < GC_QUEUE_ENTRIES_MAX) && | |
386 | (m->gc_queue_timestamp <= 0 || | |
387 | (m->gc_queue_timestamp + GC_QUEUE_USEC_MAX) > now(CLOCK_MONOTONIC))) | |
388 | return 0; | |
389 | ||
390 | log_debug("Running GC..."); | |
391 | ||
eced69b3 LP |
392 | m->gc_marker += _GC_OFFSET_MAX; |
393 | if (m->gc_marker + _GC_OFFSET_MAX <= _GC_OFFSET_MAX) | |
c9c0cadb | 394 | m->gc_marker = 1; |
701cc384 | 395 | |
eced69b3 LP |
396 | gc_marker = m->gc_marker; |
397 | ||
701cc384 LP |
398 | while ((meta = m->gc_queue)) { |
399 | assert(meta->in_gc_queue); | |
400 | ||
399ab2b1 | 401 | unit_gc_sweep((Unit*) meta, gc_marker); |
eced69b3 | 402 | |
701cc384 LP |
403 | LIST_REMOVE(Meta, gc_queue, m->gc_queue, meta); |
404 | meta->in_gc_queue = false; | |
405 | ||
406 | n++; | |
407 | ||
eced69b3 LP |
408 | if (meta->gc_marker == gc_marker + GC_OFFSET_BAD || |
409 | meta->gc_marker == gc_marker + GC_OFFSET_UNSURE) { | |
701cc384 | 410 | log_debug("Collecting %s", meta->id); |
eced69b3 | 411 | meta->gc_marker = gc_marker + GC_OFFSET_BAD; |
399ab2b1 | 412 | unit_add_to_cleanup_queue((Unit*) meta); |
701cc384 LP |
413 | } |
414 | } | |
415 | ||
416 | m->n_in_gc_queue = 0; | |
417 | m->gc_queue_timestamp = 0; | |
418 | ||
419 | return n; | |
420 | } | |
421 | ||
a16e1123 | 422 | static void manager_clear_jobs_and_units(Manager *m) { |
e5b5ae50 | 423 | Job *j; |
a16e1123 | 424 | Unit *u; |
60918275 LP |
425 | |
426 | assert(m); | |
427 | ||
87f0e418 | 428 | while ((j = hashmap_first(m->transaction_jobs))) |
e5b5ae50 LP |
429 | job_free(j); |
430 | ||
87f0e418 LP |
431 | while ((u = hashmap_first(m->units))) |
432 | unit_free(u); | |
964e0949 LP |
433 | |
434 | manager_dispatch_cleanup_queue(m); | |
435 | ||
436 | assert(!m->load_queue); | |
437 | assert(!m->run_queue); | |
438 | assert(!m->dbus_unit_queue); | |
439 | assert(!m->dbus_job_queue); | |
440 | assert(!m->cleanup_queue); | |
441 | assert(!m->gc_queue); | |
442 | ||
443 | assert(hashmap_isempty(m->transaction_jobs)); | |
444 | assert(hashmap_isempty(m->jobs)); | |
445 | assert(hashmap_isempty(m->units)); | |
a16e1123 LP |
446 | } |
447 | ||
448 | void manager_free(Manager *m) { | |
449 | UnitType c; | |
87f0e418 | 450 | |
a16e1123 LP |
451 | assert(m); |
452 | ||
453 | manager_clear_jobs_and_units(m); | |
23a177ef | 454 | |
7824bbeb LP |
455 | for (c = 0; c < _UNIT_TYPE_MAX; c++) |
456 | if (unit_vtable[c]->shutdown) | |
457 | unit_vtable[c]->shutdown(m); | |
458 | ||
a16e1123 LP |
459 | /* If we reexecute ourselves, we keep the root cgroup |
460 | * around */ | |
c6c18be3 | 461 | manager_shutdown_cgroup(m, m->exit_code != MANAGER_REEXECUTE); |
8e274523 | 462 | |
5a1e9937 LP |
463 | manager_undo_generators(m); |
464 | ||
5e8d1c9a | 465 | bus_done(m); |
ea430986 | 466 | |
87f0e418 | 467 | hashmap_free(m->units); |
60918275 | 468 | hashmap_free(m->jobs); |
e5b5ae50 | 469 | hashmap_free(m->transaction_jobs); |
9152c765 | 470 | hashmap_free(m->watch_pids); |
05e343b7 | 471 | hashmap_free(m->watch_bus); |
9152c765 LP |
472 | |
473 | if (m->epoll_fd >= 0) | |
a16e1123 | 474 | close_nointr_nofail(m->epoll_fd); |
acbb0225 | 475 | if (m->signal_watch.fd >= 0) |
a16e1123 | 476 | close_nointr_nofail(m->signal_watch.fd); |
8c47c732 LP |
477 | if (m->notify_watch.fd >= 0) |
478 | close_nointr_nofail(m->notify_watch.fd); | |
60918275 | 479 | |
4927fcae LP |
480 | #ifdef HAVE_AUDIT |
481 | if (m->audit_fd >= 0) | |
482 | audit_close(m->audit_fd); | |
483 | #endif | |
484 | ||
c952c6ec LP |
485 | free(m->notify_socket); |
486 | ||
84e3543e | 487 | lookup_paths_free(&m->lookup_paths); |
1137a57c | 488 | strv_free(m->environment); |
036643a2 | 489 | |
06d4c99a LP |
490 | strv_free(m->default_controllers); |
491 | ||
8e274523 | 492 | hashmap_free(m->cgroup_bondings); |
c6c18be3 | 493 | set_free_free(m->unit_path_cache); |
33be102a | 494 | |
60918275 LP |
495 | free(m); |
496 | } | |
497 | ||
a16e1123 LP |
498 | int manager_enumerate(Manager *m) { |
499 | int r = 0, q; | |
f50e0a01 | 500 | UnitType c; |
f50e0a01 LP |
501 | |
502 | assert(m); | |
503 | ||
a16e1123 LP |
504 | /* Let's ask every type to load all units from disk/kernel |
505 | * that it might know */ | |
f50e0a01 LP |
506 | for (c = 0; c < _UNIT_TYPE_MAX; c++) |
507 | if (unit_vtable[c]->enumerate) | |
a16e1123 LP |
508 | if ((q = unit_vtable[c]->enumerate(m)) < 0) |
509 | r = q; | |
f50e0a01 LP |
510 | |
511 | manager_dispatch_load_queue(m); | |
a16e1123 LP |
512 | return r; |
513 | } | |
514 | ||
515 | int manager_coldplug(Manager *m) { | |
516 | int r = 0, q; | |
517 | Iterator i; | |
518 | Unit *u; | |
519 | char *k; | |
520 | ||
521 | assert(m); | |
f50e0a01 LP |
522 | |
523 | /* Then, let's set up their initial state. */ | |
524 | HASHMAP_FOREACH_KEY(u, k, m->units, i) { | |
525 | ||
526 | /* ignore aliases */ | |
9e2f7c11 | 527 | if (u->meta.id != k) |
f50e0a01 LP |
528 | continue; |
529 | ||
cca098b0 LP |
530 | if ((q = unit_coldplug(u)) < 0) |
531 | r = q; | |
f50e0a01 LP |
532 | } |
533 | ||
a16e1123 LP |
534 | return r; |
535 | } | |
536 | ||
fe51822e LP |
537 | static void manager_build_unit_path_cache(Manager *m) { |
538 | char **i; | |
539 | DIR *d = NULL; | |
540 | int r; | |
541 | ||
542 | assert(m); | |
543 | ||
544 | set_free_free(m->unit_path_cache); | |
545 | ||
546 | if (!(m->unit_path_cache = set_new(string_hash_func, string_compare_func))) { | |
547 | log_error("Failed to allocate unit path cache."); | |
548 | return; | |
549 | } | |
550 | ||
551 | /* This simply builds a list of files we know exist, so that | |
552 | * we don't always have to go to disk */ | |
553 | ||
554 | STRV_FOREACH(i, m->lookup_paths.unit_path) { | |
555 | struct dirent *de; | |
556 | ||
557 | if (!(d = opendir(*i))) { | |
558 | log_error("Failed to open directory: %m"); | |
559 | continue; | |
560 | } | |
561 | ||
562 | while ((de = readdir(d))) { | |
563 | char *p; | |
564 | ||
565 | if (ignore_file(de->d_name)) | |
566 | continue; | |
567 | ||
44d91056 LP |
568 | p = join(streq(*i, "/") ? "" : *i, "/", de->d_name, NULL); |
569 | if (!p) { | |
fe51822e LP |
570 | r = -ENOMEM; |
571 | goto fail; | |
572 | } | |
573 | ||
574 | if ((r = set_put(m->unit_path_cache, p)) < 0) { | |
575 | free(p); | |
576 | goto fail; | |
577 | } | |
578 | } | |
579 | ||
580 | closedir(d); | |
581 | d = NULL; | |
582 | } | |
583 | ||
584 | return; | |
585 | ||
586 | fail: | |
587 | log_error("Failed to build unit path cache: %s", strerror(-r)); | |
588 | ||
589 | set_free_free(m->unit_path_cache); | |
590 | m->unit_path_cache = NULL; | |
591 | ||
592 | if (d) | |
593 | closedir(d); | |
594 | } | |
595 | ||
a16e1123 LP |
596 | int manager_startup(Manager *m, FILE *serialization, FDSet *fds) { |
597 | int r, q; | |
598 | ||
599 | assert(m); | |
600 | ||
5a1e9937 LP |
601 | manager_run_generators(m); |
602 | ||
fe51822e LP |
603 | manager_build_unit_path_cache(m); |
604 | ||
9f611ad8 LP |
605 | /* If we will deserialize make sure that during enumeration |
606 | * this is already known, so we increase the counter here | |
607 | * already */ | |
608 | if (serialization) | |
a7556052 | 609 | m->n_reloading ++; |
9f611ad8 | 610 | |
a16e1123 LP |
611 | /* First, enumerate what we can from all config files */ |
612 | r = manager_enumerate(m); | |
613 | ||
614 | /* Second, deserialize if there is something to deserialize */ | |
615 | if (serialization) | |
616 | if ((q = manager_deserialize(m, serialization, fds)) < 0) | |
617 | r = q; | |
618 | ||
619 | /* Third, fire things up! */ | |
620 | if ((q = manager_coldplug(m)) < 0) | |
621 | r = q; | |
622 | ||
9f611ad8 | 623 | if (serialization) { |
a7556052 LP |
624 | assert(m->n_reloading > 0); |
625 | m->n_reloading --; | |
9f611ad8 LP |
626 | } |
627 | ||
a16e1123 | 628 | return r; |
f50e0a01 LP |
629 | } |
630 | ||
23a177ef | 631 | static void transaction_delete_job(Manager *m, Job *j, bool delete_dependencies) { |
302d0040 LP |
632 | assert(m); |
633 | assert(j); | |
634 | ||
1ffba6fe LP |
635 | /* Deletes one job from the transaction */ |
636 | ||
23a177ef | 637 | manager_transaction_unlink_job(m, j, delete_dependencies); |
302d0040 | 638 | |
ac1135be | 639 | if (!j->installed) |
302d0040 LP |
640 | job_free(j); |
641 | } | |
642 | ||
87f0e418 | 643 | static void transaction_delete_unit(Manager *m, Unit *u) { |
1ffba6fe LP |
644 | Job *j; |
645 | ||
87f0e418 | 646 | /* Deletes all jobs associated with a certain unit from the |
1ffba6fe LP |
647 | * transaction */ |
648 | ||
87f0e418 | 649 | while ((j = hashmap_get(m->transaction_jobs, u))) |
23a177ef | 650 | transaction_delete_job(m, j, true); |
1ffba6fe LP |
651 | } |
652 | ||
f04fa1d5 LP |
653 | static void transaction_clean_dependencies(Manager *m) { |
654 | Iterator i; | |
655 | Job *j; | |
656 | ||
657 | assert(m); | |
658 | ||
659 | /* Drops all dependencies of all installed jobs */ | |
660 | ||
661 | HASHMAP_FOREACH(j, m->jobs, i) { | |
662 | while (j->subject_list) | |
663 | job_dependency_free(j->subject_list); | |
664 | while (j->object_list) | |
665 | job_dependency_free(j->object_list); | |
666 | } | |
667 | ||
668 | assert(!m->transaction_anchor); | |
669 | } | |
670 | ||
11dd41ce LP |
671 | static void transaction_abort(Manager *m) { |
672 | Job *j; | |
673 | ||
674 | assert(m); | |
11dd41ce | 675 | |
e5b5ae50 | 676 | while ((j = hashmap_first(m->transaction_jobs))) |
ac1135be | 677 | if (j->installed) |
23a177ef | 678 | transaction_delete_job(m, j, true); |
e5b5ae50 LP |
679 | else |
680 | job_free(j); | |
681 | ||
682 | assert(hashmap_isempty(m->transaction_jobs)); | |
f04fa1d5 LP |
683 | |
684 | transaction_clean_dependencies(m); | |
e5b5ae50 LP |
685 | } |
686 | ||
687 | static void transaction_find_jobs_that_matter_to_anchor(Manager *m, Job *j, unsigned generation) { | |
688 | JobDependency *l; | |
689 | ||
690 | assert(m); | |
691 | ||
87f0e418 | 692 | /* A recursive sweep through the graph that marks all units |
1ffba6fe LP |
693 | * that matter to the anchor job, i.e. are directly or |
694 | * indirectly a dependency of the anchor job via paths that | |
695 | * are fully marked as mattering. */ | |
696 | ||
44d8db9e LP |
697 | if (j) |
698 | l = j->subject_list; | |
699 | else | |
700 | l = m->transaction_anchor; | |
701 | ||
702 | LIST_FOREACH(subject, l, l) { | |
e5b5ae50 LP |
703 | |
704 | /* This link does not matter */ | |
705 | if (!l->matters) | |
706 | continue; | |
707 | ||
87f0e418 | 708 | /* This unit has already been marked */ |
e5b5ae50 LP |
709 | if (l->object->generation == generation) |
710 | continue; | |
711 | ||
712 | l->object->matters_to_anchor = true; | |
713 | l->object->generation = generation; | |
714 | ||
715 | transaction_find_jobs_that_matter_to_anchor(m, l->object, generation); | |
716 | } | |
717 | } | |
718 | ||
7fad411c | 719 | static void transaction_merge_and_delete_job(Manager *m, Job *j, Job *other, JobType t) { |
e5b5ae50 LP |
720 | JobDependency *l, *last; |
721 | ||
722 | assert(j); | |
723 | assert(other); | |
87f0e418 | 724 | assert(j->unit == other->unit); |
ac1135be | 725 | assert(!j->installed); |
e5b5ae50 | 726 | |
1ffba6fe LP |
727 | /* Merges 'other' into 'j' and then deletes j. */ |
728 | ||
e5b5ae50 LP |
729 | j->type = t; |
730 | j->state = JOB_WAITING; | |
9e2f7c11 | 731 | j->override = j->override || other->override; |
e5b5ae50 LP |
732 | |
733 | j->matters_to_anchor = j->matters_to_anchor || other->matters_to_anchor; | |
734 | ||
735 | /* Patch us in as new owner of the JobDependency objects */ | |
736 | last = NULL; | |
44d8db9e | 737 | LIST_FOREACH(subject, l, other->subject_list) { |
e5b5ae50 LP |
738 | assert(l->subject == other); |
739 | l->subject = j; | |
740 | last = l; | |
741 | } | |
742 | ||
743 | /* Merge both lists */ | |
744 | if (last) { | |
745 | last->subject_next = j->subject_list; | |
746 | if (j->subject_list) | |
747 | j->subject_list->subject_prev = last; | |
748 | j->subject_list = other->subject_list; | |
749 | } | |
750 | ||
751 | /* Patch us in as new owner of the JobDependency objects */ | |
752 | last = NULL; | |
44d8db9e | 753 | LIST_FOREACH(object, l, other->object_list) { |
e5b5ae50 LP |
754 | assert(l->object == other); |
755 | l->object = j; | |
756 | last = l; | |
757 | } | |
758 | ||
759 | /* Merge both lists */ | |
760 | if (last) { | |
761 | last->object_next = j->object_list; | |
762 | if (j->object_list) | |
763 | j->object_list->object_prev = last; | |
764 | j->object_list = other->object_list; | |
765 | } | |
766 | ||
e5b5ae50 LP |
767 | /* Kill the other job */ |
768 | other->subject_list = NULL; | |
769 | other->object_list = NULL; | |
23a177ef | 770 | transaction_delete_job(m, other, true); |
e5b5ae50 | 771 | } |
69dd2852 LP |
772 | static bool job_is_conflicted_by(Job *j) { |
773 | JobDependency *l; | |
774 | ||
775 | assert(j); | |
776 | ||
777 | /* Returns true if this job is pulled in by a least one | |
778 | * ConflictedBy dependency. */ | |
779 | ||
780 | LIST_FOREACH(object, l, j->object_list) | |
781 | if (l->conflicts) | |
782 | return true; | |
783 | ||
784 | return false; | |
785 | } | |
e5b5ae50 | 786 | |
5cb5a6ff | 787 | static int delete_one_unmergeable_job(Manager *m, Job *j) { |
1ffba6fe LP |
788 | Job *k; |
789 | ||
790 | assert(j); | |
791 | ||
792 | /* Tries to delete one item in the linked list | |
793 | * j->transaction_next->transaction_next->... that conflicts | |
35b8ca3a | 794 | * with another one, in an attempt to make an inconsistent |
1ffba6fe LP |
795 | * transaction work. */ |
796 | ||
797 | /* We rely here on the fact that if a merged with b does not | |
798 | * merge with c, either a or b merge with c neither */ | |
034c6ed7 LP |
799 | LIST_FOREACH(transaction, j, j) |
800 | LIST_FOREACH(transaction, k, j->transaction_next) { | |
1ffba6fe LP |
801 | Job *d; |
802 | ||
803 | /* Is this one mergeable? Then skip it */ | |
5cb5a6ff | 804 | if (job_type_is_mergeable(j->type, k->type)) |
1ffba6fe LP |
805 | continue; |
806 | ||
807 | /* Ok, we found two that conflict, let's see if we can | |
808 | * drop one of them */ | |
69dd2852 LP |
809 | if (!j->matters_to_anchor && !k->matters_to_anchor) { |
810 | ||
811 | /* Both jobs don't matter, so let's | |
812 | * find the one that is smarter to | |
813 | * remove. Let's think positive and | |
814 | * rather remove stops then starts -- | |
815 | * except if something is being | |
816 | * stopped because it is conflicted by | |
817 | * another unit in which case we | |
818 | * rather remove the start. */ | |
819 | ||
820 | 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))); | |
821 | 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))); | |
822 | ||
823 | if (j->type == JOB_STOP) { | |
824 | ||
825 | if (job_is_conflicted_by(j)) | |
826 | d = k; | |
827 | else | |
828 | d = j; | |
829 | ||
830 | } else if (k->type == JOB_STOP) { | |
831 | ||
832 | if (job_is_conflicted_by(k)) | |
833 | d = j; | |
834 | else | |
835 | d = k; | |
e364ad06 LP |
836 | } else |
837 | d = j; | |
69dd2852 LP |
838 | |
839 | } else if (!j->matters_to_anchor) | |
1ffba6fe LP |
840 | d = j; |
841 | else if (!k->matters_to_anchor) | |
842 | d = k; | |
843 | else | |
844 | return -ENOEXEC; | |
845 | ||
846 | /* Ok, we can drop one, so let's do so. */ | |
2e81c8a5 | 847 | log_debug("Fixing conflicting jobs by deleting job %s/%s", d->unit->meta.id, job_type_to_string(d->type)); |
23a177ef | 848 | transaction_delete_job(m, d, true); |
1ffba6fe LP |
849 | return 0; |
850 | } | |
851 | ||
852 | return -EINVAL; | |
853 | } | |
854 | ||
398ef8ba | 855 | static int transaction_merge_jobs(Manager *m, DBusError *e) { |
11dd41ce | 856 | Job *j; |
034c6ed7 | 857 | Iterator i; |
e5b5ae50 LP |
858 | int r; |
859 | ||
860 | assert(m); | |
861 | ||
1ffba6fe LP |
862 | /* First step, check whether any of the jobs for one specific |
863 | * task conflict. If so, try to drop one of them. */ | |
034c6ed7 | 864 | HASHMAP_FOREACH(j, m->transaction_jobs, i) { |
1ffba6fe LP |
865 | JobType t; |
866 | Job *k; | |
867 | ||
868 | t = j->type; | |
034c6ed7 | 869 | LIST_FOREACH(transaction, k, j->transaction_next) { |
e364ad06 | 870 | if (job_type_merge(&t, k->type) >= 0) |
1ffba6fe LP |
871 | continue; |
872 | ||
873 | /* OK, we could not merge all jobs for this | |
874 | * action. Let's see if we can get rid of one | |
875 | * of them */ | |
876 | ||
5cb5a6ff | 877 | if ((r = delete_one_unmergeable_job(m, j)) >= 0) |
1ffba6fe LP |
878 | /* Ok, we managed to drop one, now |
879 | * let's ask our callers to call us | |
880 | * again after garbage collecting */ | |
881 | return -EAGAIN; | |
882 | ||
883 | /* We couldn't merge anything. Failure */ | |
398ef8ba LP |
884 | dbus_set_error(e, BUS_ERROR_TRANSACTION_JOBS_CONFLICTING, "Transaction contains conflicting jobs '%s' and '%s' for %s. Probably contradicting requirement dependencies configured.", |
885 | job_type_to_string(t), job_type_to_string(k->type), k->unit->meta.id); | |
1ffba6fe LP |
886 | return r; |
887 | } | |
888 | } | |
889 | ||
890 | /* Second step, merge the jobs. */ | |
034c6ed7 | 891 | HASHMAP_FOREACH(j, m->transaction_jobs, i) { |
e5b5ae50 LP |
892 | JobType t = j->type; |
893 | Job *k; | |
894 | ||
e094e853 | 895 | /* Merge all transactions */ |
034c6ed7 | 896 | LIST_FOREACH(transaction, k, j->transaction_next) |
1ffba6fe | 897 | assert_se(job_type_merge(&t, k->type) == 0); |
e5b5ae50 | 898 | |
5cb5a6ff | 899 | /* If an active job is mergeable, merge it too */ |
87f0e418 LP |
900 | if (j->unit->meta.job) |
901 | job_type_merge(&t, j->unit->meta.job->type); /* Might fail. Which is OK */ | |
e094e853 | 902 | |
e5b5ae50 | 903 | while ((k = j->transaction_next)) { |
ac1135be | 904 | if (j->installed) { |
7fad411c | 905 | transaction_merge_and_delete_job(m, k, j, t); |
e5b5ae50 LP |
906 | j = k; |
907 | } else | |
7fad411c | 908 | transaction_merge_and_delete_job(m, j, k, t); |
e5b5ae50 LP |
909 | } |
910 | ||
1b562e46 MS |
911 | if (j->unit->meta.job && !j->installed) |
912 | transaction_merge_and_delete_job(m, j, j->unit->meta.job, t); | |
913 | ||
e5b5ae50 LP |
914 | assert(!j->transaction_next); |
915 | assert(!j->transaction_prev); | |
916 | } | |
917 | ||
7fad411c | 918 | return 0; |
e5b5ae50 LP |
919 | } |
920 | ||
23a177ef LP |
921 | static void transaction_drop_redundant(Manager *m) { |
922 | bool again; | |
923 | ||
924 | assert(m); | |
925 | ||
926 | /* Goes through the transaction and removes all jobs that are | |
927 | * a noop */ | |
928 | ||
929 | do { | |
930 | Job *j; | |
931 | Iterator i; | |
932 | ||
933 | again = false; | |
934 | ||
935 | HASHMAP_FOREACH(j, m->transaction_jobs, i) { | |
936 | bool changes_something = false; | |
937 | Job *k; | |
938 | ||
939 | LIST_FOREACH(transaction, k, j) { | |
940 | ||
941 | if (!job_is_anchor(k) && | |
3aea3b35 LP |
942 | (k->installed || job_type_is_redundant(k->type, unit_active_state(k->unit))) && |
943 | (!k->unit->meta.job || !job_type_is_conflicting(k->type, k->unit->meta.job->type))) | |
23a177ef LP |
944 | continue; |
945 | ||
946 | changes_something = true; | |
947 | break; | |
948 | } | |
949 | ||
950 | if (changes_something) | |
951 | continue; | |
952 | ||
9b3d9090 | 953 | /* log_debug("Found redundant job %s/%s, dropping.", j->unit->meta.id, job_type_to_string(j->type)); */ |
23a177ef LP |
954 | transaction_delete_job(m, j, false); |
955 | again = true; | |
956 | break; | |
957 | } | |
958 | ||
959 | } while (again); | |
960 | } | |
961 | ||
87f0e418 LP |
962 | static bool unit_matters_to_anchor(Unit *u, Job *j) { |
963 | assert(u); | |
1ffba6fe LP |
964 | assert(!j->transaction_prev); |
965 | ||
87f0e418 | 966 | /* Checks whether at least one of the jobs for this unit |
1ffba6fe LP |
967 | * matters to the anchor. */ |
968 | ||
034c6ed7 | 969 | LIST_FOREACH(transaction, j, j) |
1ffba6fe LP |
970 | if (j->matters_to_anchor) |
971 | return true; | |
972 | ||
973 | return false; | |
974 | } | |
975 | ||
398ef8ba | 976 | static int transaction_verify_order_one(Manager *m, Job *j, Job *from, unsigned generation, DBusError *e) { |
034c6ed7 | 977 | Iterator i; |
87f0e418 | 978 | Unit *u; |
11dd41ce | 979 | int r; |
e5b5ae50 LP |
980 | |
981 | assert(m); | |
982 | assert(j); | |
1ffba6fe LP |
983 | assert(!j->transaction_prev); |
984 | ||
985 | /* Does a recursive sweep through the ordering graph, looking | |
986 | * for a cycle. If we find cycle we try to break it. */ | |
e5b5ae50 | 987 | |
23e3c588 LP |
988 | /* Have we seen this before? */ |
989 | if (j->generation == generation) { | |
674a6e4d | 990 | Job *k, *delete; |
e5b5ae50 | 991 | |
23e3c588 LP |
992 | /* If the marker is NULL we have been here already and |
993 | * decided the job was loop-free from here. Hence | |
994 | * shortcut things and return right-away. */ | |
995 | if (!j->marker) | |
996 | return 0; | |
e5b5ae50 | 997 | |
23e3c588 LP |
998 | /* So, the marker is not NULL and we already have been |
999 | * here. We have a cycle. Let's try to break it. We go | |
1000 | * backwards in our path and try to find a suitable | |
1001 | * job to remove. We use the marker to find our way | |
1002 | * back, since smart how we are we stored our way back | |
1003 | * in there. */ | |
54165a39 | 1004 | log_warning("Found ordering cycle on %s/%s", j->unit->meta.id, job_type_to_string(j->type)); |
9f04bd52 | 1005 | |
674a6e4d | 1006 | delete = NULL; |
23e3c588 | 1007 | for (k = from; k; k = ((k->generation == generation && k->marker != k) ? k->marker : NULL)) { |
1ffba6fe | 1008 | |
54165a39 | 1009 | log_info("Walked on cycle path to %s/%s", k->unit->meta.id, job_type_to_string(k->type)); |
9f04bd52 | 1010 | |
674a6e4d LP |
1011 | if (!delete && |
1012 | !k->installed && | |
87f0e418 | 1013 | !unit_matters_to_anchor(k->unit, k)) { |
1ffba6fe LP |
1014 | /* Ok, we can drop this one, so let's |
1015 | * do so. */ | |
674a6e4d | 1016 | delete = k; |
e5b5ae50 LP |
1017 | } |
1018 | ||
1019 | /* Check if this in fact was the beginning of | |
7fad411c | 1020 | * the cycle */ |
e5b5ae50 LP |
1021 | if (k == j) |
1022 | break; | |
1023 | } | |
1024 | ||
674a6e4d LP |
1025 | |
1026 | if (delete) { | |
54ec68b6 | 1027 | log_warning("Breaking ordering cycle by deleting job %s/%s", delete->unit->meta.id, job_type_to_string(delete->type)); |
674a6e4d LP |
1028 | transaction_delete_unit(m, delete->unit); |
1029 | return -EAGAIN; | |
1030 | } | |
1031 | ||
54165a39 | 1032 | log_error("Unable to break cycle"); |
9f04bd52 | 1033 | |
fe71c02c | 1034 | dbus_set_error(e, BUS_ERROR_TRANSACTION_ORDER_IS_CYCLIC, "Transaction order is cyclic. See system logs for details."); |
1ffba6fe | 1035 | return -ENOEXEC; |
e5b5ae50 LP |
1036 | } |
1037 | ||
1ffba6fe | 1038 | /* Make the marker point to where we come from, so that we can |
23e3c588 LP |
1039 | * find our way backwards if we want to break a cycle. We use |
1040 | * a special marker for the beginning: we point to | |
1041 | * ourselves. */ | |
1042 | j->marker = from ? from : j; | |
e5b5ae50 LP |
1043 | j->generation = generation; |
1044 | ||
1ffba6fe | 1045 | /* We assume that the the dependencies are bidirectional, and |
87f0e418 LP |
1046 | * hence can ignore UNIT_AFTER */ |
1047 | SET_FOREACH(u, j->unit->meta.dependencies[UNIT_BEFORE], i) { | |
e5b5ae50 LP |
1048 | Job *o; |
1049 | ||
87f0e418 LP |
1050 | /* Is there a job for this unit? */ |
1051 | if (!(o = hashmap_get(m->transaction_jobs, u))) | |
1ffba6fe LP |
1052 | |
1053 | /* Ok, there is no job for this in the | |
1054 | * transaction, but maybe there is already one | |
1055 | * running? */ | |
87f0e418 | 1056 | if (!(o = u->meta.job)) |
e5b5ae50 LP |
1057 | continue; |
1058 | ||
398ef8ba | 1059 | if ((r = transaction_verify_order_one(m, o, j, generation, e)) < 0) |
e5b5ae50 LP |
1060 | return r; |
1061 | } | |
1062 | ||
9f04bd52 LP |
1063 | /* Ok, let's backtrack, and remember that this entry is not on |
1064 | * our path anymore. */ | |
1065 | j->marker = NULL; | |
1066 | ||
e5b5ae50 LP |
1067 | return 0; |
1068 | } | |
1069 | ||
398ef8ba | 1070 | static int transaction_verify_order(Manager *m, unsigned *generation, DBusError *e) { |
1ffba6fe LP |
1071 | Job *j; |
1072 | int r; | |
034c6ed7 | 1073 | Iterator i; |
23e3c588 | 1074 | unsigned g; |
1ffba6fe | 1075 | |
e5b5ae50 LP |
1076 | assert(m); |
1077 | assert(generation); | |
1078 | ||
1ffba6fe LP |
1079 | /* Check if the ordering graph is cyclic. If it is, try to fix |
1080 | * that up by dropping one of the jobs. */ | |
e5b5ae50 | 1081 | |
23e3c588 LP |
1082 | g = (*generation)++; |
1083 | ||
034c6ed7 | 1084 | HASHMAP_FOREACH(j, m->transaction_jobs, i) |
398ef8ba | 1085 | if ((r = transaction_verify_order_one(m, j, NULL, g, e)) < 0) |
1ffba6fe | 1086 | return r; |
e5b5ae50 LP |
1087 | |
1088 | return 0; | |
1089 | } | |
1090 | ||
1091 | static void transaction_collect_garbage(Manager *m) { | |
1092 | bool again; | |
1093 | ||
1094 | assert(m); | |
1095 | ||
1ffba6fe LP |
1096 | /* Drop jobs that are not required by any other job */ |
1097 | ||
e5b5ae50 | 1098 | do { |
034c6ed7 | 1099 | Iterator i; |
e5b5ae50 LP |
1100 | Job *j; |
1101 | ||
1102 | again = false; | |
1103 | ||
034c6ed7 | 1104 | HASHMAP_FOREACH(j, m->transaction_jobs, i) { |
9b3d9090 LP |
1105 | if (j->object_list) { |
1106 | /* log_debug("Keeping job %s/%s because of %s/%s", */ | |
1107 | /* j->unit->meta.id, job_type_to_string(j->type), */ | |
1108 | /* j->object_list->subject ? j->object_list->subject->unit->meta.id : "root", */ | |
1109 | /* j->object_list->subject ? job_type_to_string(j->object_list->subject->type) : "root"); */ | |
e5b5ae50 | 1110 | continue; |
9b3d9090 | 1111 | } |
e5b5ae50 | 1112 | |
9b3d9090 | 1113 | /* log_debug("Garbage collecting job %s/%s", j->unit->meta.id, job_type_to_string(j->type)); */ |
23a177ef | 1114 | transaction_delete_job(m, j, true); |
e5b5ae50 LP |
1115 | again = true; |
1116 | break; | |
1117 | } | |
1118 | ||
1119 | } while (again); | |
1120 | } | |
1121 | ||
398ef8ba | 1122 | static int transaction_is_destructive(Manager *m, DBusError *e) { |
034c6ed7 | 1123 | Iterator i; |
e5b5ae50 | 1124 | Job *j; |
11dd41ce LP |
1125 | |
1126 | assert(m); | |
11dd41ce | 1127 | |
e5b5ae50 LP |
1128 | /* Checks whether applying this transaction means that |
1129 | * existing jobs would be replaced */ | |
11dd41ce | 1130 | |
034c6ed7 | 1131 | HASHMAP_FOREACH(j, m->transaction_jobs, i) { |
e094e853 LP |
1132 | |
1133 | /* Assume merged */ | |
1134 | assert(!j->transaction_prev); | |
1135 | assert(!j->transaction_next); | |
1136 | ||
87f0e418 LP |
1137 | if (j->unit->meta.job && |
1138 | j->unit->meta.job != j && | |
398ef8ba LP |
1139 | !job_type_is_superset(j->type, j->unit->meta.job->type)) { |
1140 | ||
1141 | dbus_set_error(e, BUS_ERROR_TRANSACTION_IS_DESTRUCTIVE, "Transaction is destructive."); | |
e5b5ae50 | 1142 | return -EEXIST; |
398ef8ba | 1143 | } |
e094e853 | 1144 | } |
11dd41ce | 1145 | |
e5b5ae50 LP |
1146 | return 0; |
1147 | } | |
1148 | ||
e094e853 LP |
1149 | static void transaction_minimize_impact(Manager *m) { |
1150 | bool again; | |
1151 | assert(m); | |
1152 | ||
1153 | /* Drops all unnecessary jobs that reverse already active jobs | |
1154 | * or that stop a running service. */ | |
1155 | ||
1156 | do { | |
1157 | Job *j; | |
034c6ed7 | 1158 | Iterator i; |
e094e853 LP |
1159 | |
1160 | again = false; | |
1161 | ||
034c6ed7 LP |
1162 | HASHMAP_FOREACH(j, m->transaction_jobs, i) { |
1163 | LIST_FOREACH(transaction, j, j) { | |
c20cae32 | 1164 | bool stops_running_service, changes_existing_job; |
e094e853 LP |
1165 | |
1166 | /* If it matters, we shouldn't drop it */ | |
1167 | if (j->matters_to_anchor) | |
1168 | continue; | |
1169 | ||
1170 | /* Would this stop a running service? | |
1171 | * Would this change an existing job? | |
1172 | * If so, let's drop this entry */ | |
c20cae32 LP |
1173 | |
1174 | stops_running_service = | |
1175 | j->type == JOB_STOP && UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(j->unit)); | |
1176 | ||
1177 | changes_existing_job = | |
143072ed LP |
1178 | j->unit->meta.job && |
1179 | job_type_is_conflicting(j->type, j->unit->meta.job->type); | |
c20cae32 LP |
1180 | |
1181 | if (!stops_running_service && !changes_existing_job) | |
e094e853 LP |
1182 | continue; |
1183 | ||
c20cae32 | 1184 | if (stops_running_service) |
d718bbb5 | 1185 | log_debug("%s/%s would stop a running service.", j->unit->meta.id, job_type_to_string(j->type)); |
c20cae32 LP |
1186 | |
1187 | if (changes_existing_job) | |
d718bbb5 | 1188 | log_debug("%s/%s would change existing job.", j->unit->meta.id, job_type_to_string(j->type)); |
c20cae32 | 1189 | |
e094e853 | 1190 | /* Ok, let's get rid of this */ |
d718bbb5 | 1191 | log_debug("Deleting %s/%s to minimize impact.", j->unit->meta.id, job_type_to_string(j->type)); |
c20cae32 | 1192 | |
23a177ef | 1193 | transaction_delete_job(m, j, true); |
e094e853 LP |
1194 | again = true; |
1195 | break; | |
1196 | } | |
1197 | ||
1198 | if (again) | |
1199 | break; | |
1200 | } | |
1201 | ||
1202 | } while (again); | |
1203 | } | |
1204 | ||
4fe60156 | 1205 | static int transaction_apply(Manager *m, JobMode mode) { |
034c6ed7 | 1206 | Iterator i; |
e5b5ae50 LP |
1207 | Job *j; |
1208 | int r; | |
1209 | ||
1ffba6fe LP |
1210 | /* Moves the transaction jobs to the set of active jobs */ |
1211 | ||
4fe60156 LP |
1212 | if (mode == JOB_ISOLATE) { |
1213 | ||
1214 | /* When isolating first kill all installed jobs which | |
1215 | * aren't part of the new transaction */ | |
1216 | HASHMAP_FOREACH(j, m->jobs, i) { | |
1217 | assert(j->installed); | |
1218 | ||
1219 | if (hashmap_get(m->transaction_jobs, j->unit)) | |
1220 | continue; | |
1221 | ||
1222 | job_finish_and_invalidate(j, JOB_CANCELED); | |
1223 | } | |
1224 | } | |
1225 | ||
034c6ed7 | 1226 | HASHMAP_FOREACH(j, m->transaction_jobs, i) { |
e094e853 LP |
1227 | /* Assume merged */ |
1228 | assert(!j->transaction_prev); | |
1229 | assert(!j->transaction_next); | |
1230 | ||
ac1135be | 1231 | if (j->installed) |
e5b5ae50 LP |
1232 | continue; |
1233 | ||
1234 | if ((r = hashmap_put(m->jobs, UINT32_TO_PTR(j->id), j)) < 0) | |
11dd41ce LP |
1235 | goto rollback; |
1236 | } | |
1237 | ||
e5b5ae50 | 1238 | while ((j = hashmap_steal_first(m->transaction_jobs))) { |
9b3d9090 LP |
1239 | if (j->installed) { |
1240 | /* log_debug("Skipping already installed job %s/%s as %u", j->unit->meta.id, job_type_to_string(j->type), (unsigned) j->id); */ | |
e5b5ae50 | 1241 | continue; |
9b3d9090 | 1242 | } |
e5b5ae50 | 1243 | |
87f0e418 LP |
1244 | if (j->unit->meta.job) |
1245 | job_free(j->unit->meta.job); | |
11dd41ce | 1246 | |
87f0e418 | 1247 | j->unit->meta.job = j; |
ac1135be | 1248 | j->installed = true; |
e409f875 | 1249 | m->n_installed_jobs ++; |
11dd41ce | 1250 | |
e5b5ae50 LP |
1251 | /* We're fully installed. Now let's free data we don't |
1252 | * need anymore. */ | |
1253 | ||
1254 | assert(!j->transaction_next); | |
1255 | assert(!j->transaction_prev); | |
1256 | ||
c1e1601e LP |
1257 | job_add_to_run_queue(j); |
1258 | job_add_to_dbus_queue(j); | |
312732cf | 1259 | job_start_timer(j); |
28c3247e LP |
1260 | |
1261 | log_debug("Installed new job %s/%s as %u", j->unit->meta.id, job_type_to_string(j->type), (unsigned) j->id); | |
01184e04 LP |
1262 | } |
1263 | ||
1264 | /* As last step, kill all remaining job dependencies. */ | |
f04fa1d5 | 1265 | transaction_clean_dependencies(m); |
1ffba6fe | 1266 | |
11dd41ce LP |
1267 | return 0; |
1268 | ||
1269 | rollback: | |
1270 | ||
034c6ed7 | 1271 | HASHMAP_FOREACH(j, m->transaction_jobs, i) { |
ac1135be | 1272 | if (j->installed) |
e5b5ae50 LP |
1273 | continue; |
1274 | ||
1275 | hashmap_remove(m->jobs, UINT32_TO_PTR(j->id)); | |
1276 | } | |
1277 | ||
1278 | return r; | |
1279 | } | |
1280 | ||
398ef8ba | 1281 | static int transaction_activate(Manager *m, JobMode mode, DBusError *e) { |
e5b5ae50 LP |
1282 | int r; |
1283 | unsigned generation = 1; | |
1284 | ||
1285 | assert(m); | |
1286 | ||
1287 | /* This applies the changes recorded in transaction_jobs to | |
1288 | * the actual list of jobs, if possible. */ | |
1289 | ||
1290 | /* First step: figure out which jobs matter */ | |
1291 | transaction_find_jobs_that_matter_to_anchor(m, NULL, generation++); | |
1292 | ||
e094e853 LP |
1293 | /* Second step: Try not to stop any running services if |
1294 | * we don't have to. Don't try to reverse running | |
1295 | * jobs if we don't have to. */ | |
143072ed | 1296 | if (mode == JOB_FAIL) |
c88e7f4e | 1297 | transaction_minimize_impact(m); |
e094e853 | 1298 | |
23a177ef LP |
1299 | /* Third step: Drop redundant jobs */ |
1300 | transaction_drop_redundant(m); | |
1301 | ||
1ffba6fe | 1302 | for (;;) { |
23a177ef | 1303 | /* Fourth step: Let's remove unneeded jobs that might |
1ffba6fe | 1304 | * be lurking. */ |
a8049b7a LP |
1305 | if (mode != JOB_ISOLATE) |
1306 | transaction_collect_garbage(m); | |
e5b5ae50 | 1307 | |
23a177ef | 1308 | /* Fifth step: verify order makes sense and correct |
1ffba6fe | 1309 | * cycles if necessary and possible */ |
398ef8ba | 1310 | if ((r = transaction_verify_order(m, &generation, e)) >= 0) |
1ffba6fe | 1311 | break; |
e5b5ae50 | 1312 | |
9f04bd52 | 1313 | if (r != -EAGAIN) { |
398ef8ba | 1314 | log_warning("Requested transaction contains an unfixable cyclic ordering dependency: %s", bus_error(e, r)); |
1ffba6fe | 1315 | goto rollback; |
9f04bd52 | 1316 | } |
e5b5ae50 | 1317 | |
1ffba6fe LP |
1318 | /* Let's see if the resulting transaction ordering |
1319 | * graph is still cyclic... */ | |
1320 | } | |
1321 | ||
1322 | for (;;) { | |
23a177ef | 1323 | /* Sixth step: let's drop unmergeable entries if |
1ffba6fe LP |
1324 | * necessary and possible, merge entries we can |
1325 | * merge */ | |
398ef8ba | 1326 | if ((r = transaction_merge_jobs(m, e)) >= 0) |
1ffba6fe LP |
1327 | break; |
1328 | ||
9f04bd52 | 1329 | if (r != -EAGAIN) { |
35b8ca3a | 1330 | log_warning("Requested transaction contains unmergeable jobs: %s", bus_error(e, r)); |
1ffba6fe | 1331 | goto rollback; |
9f04bd52 | 1332 | } |
1ffba6fe | 1333 | |
23a177ef | 1334 | /* Seventh step: an entry got dropped, let's garbage |
1ffba6fe | 1335 | * collect its dependencies. */ |
a8049b7a LP |
1336 | if (mode != JOB_ISOLATE) |
1337 | transaction_collect_garbage(m); | |
1ffba6fe LP |
1338 | |
1339 | /* Let's see if the resulting transaction still has | |
5cb5a6ff | 1340 | * unmergeable entries ... */ |
1ffba6fe LP |
1341 | } |
1342 | ||
23a177ef LP |
1343 | /* Eights step: Drop redundant jobs again, if the merging now allows us to drop more. */ |
1344 | transaction_drop_redundant(m); | |
1345 | ||
1346 | /* Ninth step: check whether we can actually apply this */ | |
e5b5ae50 | 1347 | if (mode == JOB_FAIL) |
398ef8ba LP |
1348 | if ((r = transaction_is_destructive(m, e)) < 0) { |
1349 | log_notice("Requested transaction contradicts existing jobs: %s", bus_error(e, r)); | |
e5b5ae50 | 1350 | goto rollback; |
9f04bd52 | 1351 | } |
e5b5ae50 | 1352 | |
23a177ef | 1353 | /* Tenth step: apply changes */ |
4fe60156 | 1354 | if ((r = transaction_apply(m, mode)) < 0) { |
54165a39 | 1355 | log_warning("Failed to apply transaction: %s", strerror(-r)); |
e5b5ae50 | 1356 | goto rollback; |
9f04bd52 | 1357 | } |
e5b5ae50 LP |
1358 | |
1359 | assert(hashmap_isempty(m->transaction_jobs)); | |
1360 | assert(!m->transaction_anchor); | |
1361 | ||
1362 | return 0; | |
11dd41ce | 1363 | |
e5b5ae50 | 1364 | rollback: |
11dd41ce LP |
1365 | transaction_abort(m); |
1366 | return r; | |
1367 | } | |
1368 | ||
9e2f7c11 | 1369 | static Job* transaction_add_one_job(Manager *m, JobType type, Unit *unit, bool override, bool *is_new) { |
e5b5ae50 | 1370 | Job *j, *f; |
60918275 LP |
1371 | |
1372 | assert(m); | |
87f0e418 | 1373 | assert(unit); |
60918275 | 1374 | |
35b8ca3a | 1375 | /* Looks for an existing prospective job and returns that. If |
e5b5ae50 LP |
1376 | * it doesn't exist it is created and added to the prospective |
1377 | * jobs list. */ | |
60918275 | 1378 | |
87f0e418 | 1379 | f = hashmap_get(m->transaction_jobs, unit); |
60918275 | 1380 | |
034c6ed7 | 1381 | LIST_FOREACH(transaction, j, f) { |
87f0e418 | 1382 | assert(j->unit == unit); |
60918275 | 1383 | |
e5b5ae50 LP |
1384 | if (j->type == type) { |
1385 | if (is_new) | |
1386 | *is_new = false; | |
1387 | return j; | |
1388 | } | |
1389 | } | |
60918275 | 1390 | |
87f0e418 LP |
1391 | if (unit->meta.job && unit->meta.job->type == type) |
1392 | j = unit->meta.job; | |
1393 | else if (!(j = job_new(m, type, unit))) | |
e5b5ae50 | 1394 | return NULL; |
60918275 | 1395 | |
e5b5ae50 LP |
1396 | j->generation = 0; |
1397 | j->marker = NULL; | |
1398 | j->matters_to_anchor = false; | |
9e2f7c11 | 1399 | j->override = override; |
60918275 | 1400 | |
034c6ed7 LP |
1401 | LIST_PREPEND(Job, transaction, f, j); |
1402 | ||
e364ad06 | 1403 | if (hashmap_replace(m->transaction_jobs, unit, f) < 0) { |
034c6ed7 LP |
1404 | job_free(j); |
1405 | return NULL; | |
1406 | } | |
1407 | ||
e5b5ae50 LP |
1408 | if (is_new) |
1409 | *is_new = true; | |
60918275 | 1410 | |
9b3d9090 | 1411 | /* log_debug("Added job %s/%s to transaction.", unit->meta.id, job_type_to_string(type)); */ |
23a177ef | 1412 | |
e5b5ae50 LP |
1413 | return j; |
1414 | } | |
11dd41ce | 1415 | |
23a177ef | 1416 | void manager_transaction_unlink_job(Manager *m, Job *j, bool delete_dependencies) { |
e5b5ae50 LP |
1417 | assert(m); |
1418 | assert(j); | |
11dd41ce | 1419 | |
e5b5ae50 LP |
1420 | if (j->transaction_prev) |
1421 | j->transaction_prev->transaction_next = j->transaction_next; | |
1422 | else if (j->transaction_next) | |
87f0e418 | 1423 | hashmap_replace(m->transaction_jobs, j->unit, j->transaction_next); |
e5b5ae50 | 1424 | else |
87f0e418 | 1425 | hashmap_remove_value(m->transaction_jobs, j->unit, j); |
e5b5ae50 LP |
1426 | |
1427 | if (j->transaction_next) | |
1428 | j->transaction_next->transaction_prev = j->transaction_prev; | |
1429 | ||
1430 | j->transaction_prev = j->transaction_next = NULL; | |
1431 | ||
1432 | while (j->subject_list) | |
1433 | job_dependency_free(j->subject_list); | |
1e198baf LP |
1434 | |
1435 | while (j->object_list) { | |
1436 | Job *other = j->object_list->matters ? j->object_list->subject : NULL; | |
1437 | ||
e5b5ae50 | 1438 | job_dependency_free(j->object_list); |
1e198baf | 1439 | |
23a177ef | 1440 | if (other && delete_dependencies) { |
2e81c8a5 | 1441 | log_debug("Deleting job %s/%s as dependency of job %s/%s", |
9e2f7c11 LP |
1442 | other->unit->meta.id, job_type_to_string(other->type), |
1443 | j->unit->meta.id, job_type_to_string(j->type)); | |
23a177ef | 1444 | transaction_delete_job(m, other, delete_dependencies); |
1e198baf LP |
1445 | } |
1446 | } | |
e5b5ae50 LP |
1447 | } |
1448 | ||
9e2f7c11 LP |
1449 | static int transaction_add_job_and_dependencies( |
1450 | Manager *m, | |
1451 | JobType type, | |
1452 | Unit *unit, | |
1453 | Job *by, | |
1454 | bool matters, | |
1455 | bool override, | |
69dd2852 | 1456 | bool conflicts, |
cebe0d41 LP |
1457 | bool ignore_requirements, |
1458 | bool ignore_order, | |
398ef8ba | 1459 | DBusError *e, |
9e2f7c11 | 1460 | Job **_ret) { |
e5b5ae50 | 1461 | Job *ret; |
034c6ed7 | 1462 | Iterator i; |
87f0e418 | 1463 | Unit *dep; |
e5b5ae50 LP |
1464 | int r; |
1465 | bool is_new; | |
1466 | ||
1467 | assert(m); | |
1468 | assert(type < _JOB_TYPE_MAX); | |
87f0e418 | 1469 | assert(unit); |
e5b5ae50 | 1470 | |
3aea3b35 LP |
1471 | /* log_debug("Pulling in %s/%s from %s/%s", */ |
1472 | /* unit->meta.id, job_type_to_string(type), */ | |
1473 | /* by ? by->unit->meta.id : "NA", */ | |
1474 | /* by ? job_type_to_string(by->type) : "NA"); */ | |
1475 | ||
00dc5d76 LP |
1476 | if (unit->meta.load_state != UNIT_LOADED && |
1477 | unit->meta.load_state != UNIT_ERROR && | |
6daf4f90 | 1478 | unit->meta.load_state != UNIT_MASKED) { |
8821a00f LP |
1479 | dbus_set_error(e, BUS_ERROR_LOAD_FAILED, "Unit %s is not loaded properly.", unit->meta.id); |
1480 | return -EINVAL; | |
1481 | } | |
1482 | ||
fdf20a31 | 1483 | if (type != JOB_STOP && unit->meta.load_state == UNIT_ERROR) { |
00dc5d76 LP |
1484 | dbus_set_error(e, BUS_ERROR_LOAD_FAILED, |
1485 | "Unit %s failed to load: %s. " | |
3661ac04 | 1486 | "See system logs and 'systemctl status %s' for details.", |
8821a00f | 1487 | unit->meta.id, |
3661ac04 LP |
1488 | strerror(-unit->meta.load_error), |
1489 | unit->meta.id); | |
21b293e8 | 1490 | return -EINVAL; |
398ef8ba | 1491 | } |
21b293e8 | 1492 | |
6daf4f90 LP |
1493 | if (type != JOB_STOP && unit->meta.load_state == UNIT_MASKED) { |
1494 | dbus_set_error(e, BUS_ERROR_MASKED, "Unit %s is masked.", unit->meta.id); | |
00dc5d76 LP |
1495 | return -EINVAL; |
1496 | } | |
1497 | ||
398ef8ba LP |
1498 | if (!unit_job_is_applicable(unit, type)) { |
1499 | 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 | 1500 | return -EBADR; |
398ef8ba | 1501 | } |
cd2dbd7d | 1502 | |
e5b5ae50 | 1503 | /* First add the job. */ |
9e2f7c11 | 1504 | if (!(ret = transaction_add_one_job(m, type, unit, override, &is_new))) |
e5b5ae50 LP |
1505 | return -ENOMEM; |
1506 | ||
cebe0d41 | 1507 | ret->ignore_order = ret->ignore_order || ignore_order; |
e67c3609 | 1508 | |
e5b5ae50 | 1509 | /* Then, add a link to the job. */ |
69dd2852 | 1510 | if (!job_dependency_new(by, ret, matters, conflicts)) |
e5b5ae50 LP |
1511 | return -ENOMEM; |
1512 | ||
cebe0d41 | 1513 | if (is_new && !ignore_requirements) { |
6210e7fc LP |
1514 | Set *following; |
1515 | ||
1516 | /* If we are following some other unit, make sure we | |
1517 | * add all dependencies of everybody following. */ | |
1518 | if (unit_following_set(ret->unit, &following) > 0) { | |
1519 | SET_FOREACH(dep, following, i) | |
cebe0d41 | 1520 | if ((r = transaction_add_job_and_dependencies(m, type, dep, ret, false, override, false, false, ignore_order, e, NULL)) < 0) { |
6210e7fc LP |
1521 | log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->meta.id, bus_error(e, r)); |
1522 | ||
1523 | if (e) | |
1524 | dbus_error_free(e); | |
1525 | } | |
1526 | ||
1527 | set_free(following); | |
1528 | } | |
1529 | ||
e5b5ae50 LP |
1530 | /* Finally, recursively add in all dependencies. */ |
1531 | if (type == JOB_START || type == JOB_RELOAD_OR_START) { | |
87f0e418 | 1532 | SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_REQUIRES], i) |
cebe0d41 | 1533 | if ((r = transaction_add_job_and_dependencies(m, JOB_START, dep, ret, true, override, false, false, ignore_order, e, NULL)) < 0) { |
41242c42 LP |
1534 | if (r != -EBADR) |
1535 | goto fail; | |
1536 | ||
1537 | if (e) | |
1538 | dbus_error_free(e); | |
1539 | } | |
9e2f7c11 | 1540 | |
b81884e7 | 1541 | SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_BIND_TO], i) |
cebe0d41 | 1542 | if ((r = transaction_add_job_and_dependencies(m, JOB_START, dep, ret, true, override, false, false, ignore_order, e, NULL)) < 0) { |
41242c42 LP |
1543 | |
1544 | if (r != -EBADR) | |
1545 | goto fail; | |
1546 | ||
1547 | if (e) | |
1548 | dbus_error_free(e); | |
1549 | } | |
b81884e7 | 1550 | |
9e2f7c11 | 1551 | SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_REQUIRES_OVERRIDABLE], i) |
cebe0d41 | 1552 | if ((r = transaction_add_job_and_dependencies(m, JOB_START, dep, ret, !override, override, false, false, ignore_order, e, NULL)) < 0) { |
65e92d67 | 1553 | log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->meta.id, bus_error(e, r)); |
60dc72b5 LP |
1554 | |
1555 | if (e) | |
1556 | dbus_error_free(e); | |
65e92d67 | 1557 | } |
9e2f7c11 | 1558 | |
87f0e418 | 1559 | SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_WANTS], i) |
cebe0d41 | 1560 | if ((r = transaction_add_job_and_dependencies(m, JOB_START, dep, ret, false, false, false, false, ignore_order, e, NULL)) < 0) { |
65e92d67 | 1561 | log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->meta.id, bus_error(e, r)); |
60dc72b5 LP |
1562 | |
1563 | if (e) | |
1564 | dbus_error_free(e); | |
65e92d67 | 1565 | } |
9e2f7c11 | 1566 | |
87f0e418 | 1567 | SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_REQUISITE], i) |
cebe0d41 | 1568 | if ((r = transaction_add_job_and_dependencies(m, JOB_VERIFY_ACTIVE, dep, ret, true, override, false, false, ignore_order, e, NULL)) < 0) { |
41242c42 LP |
1569 | |
1570 | if (r != -EBADR) | |
1571 | goto fail; | |
1572 | ||
1573 | if (e) | |
1574 | dbus_error_free(e); | |
1575 | } | |
9e2f7c11 LP |
1576 | |
1577 | SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_REQUISITE_OVERRIDABLE], i) | |
cebe0d41 | 1578 | if ((r = transaction_add_job_and_dependencies(m, JOB_VERIFY_ACTIVE, dep, ret, !override, override, false, false, ignore_order, e, NULL)) < 0) { |
65e92d67 | 1579 | log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->meta.id, bus_error(e, r)); |
60dc72b5 LP |
1580 | |
1581 | if (e) | |
1582 | dbus_error_free(e); | |
65e92d67 | 1583 | } |
9e2f7c11 | 1584 | |
87f0e418 | 1585 | SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_CONFLICTS], i) |
cebe0d41 | 1586 | if ((r = transaction_add_job_and_dependencies(m, JOB_STOP, dep, ret, true, override, true, false, ignore_order, e, NULL)) < 0) { |
41242c42 LP |
1587 | |
1588 | if (r != -EBADR) | |
1589 | goto fail; | |
1590 | ||
1591 | if (e) | |
1592 | dbus_error_free(e); | |
1593 | } | |
69dd2852 LP |
1594 | |
1595 | SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_CONFLICTED_BY], i) | |
cebe0d41 | 1596 | if ((r = transaction_add_job_and_dependencies(m, JOB_STOP, dep, ret, false, override, false, false, ignore_order, e, NULL)) < 0) { |
41242c42 LP |
1597 | log_warning("Cannot add dependency job for unit %s, ignoring: %s", dep->meta.id, bus_error(e, r)); |
1598 | ||
1599 | if (e) | |
1600 | dbus_error_free(e); | |
1601 | } | |
e5b5ae50 LP |
1602 | |
1603 | } else if (type == JOB_STOP || type == JOB_RESTART || type == JOB_TRY_RESTART) { | |
1604 | ||
87f0e418 | 1605 | SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_REQUIRED_BY], i) |
cebe0d41 | 1606 | if ((r = transaction_add_job_and_dependencies(m, type, dep, ret, true, override, false, false, ignore_order, e, NULL)) < 0) { |
41242c42 LP |
1607 | |
1608 | if (r != -EBADR) | |
1609 | goto fail; | |
1610 | ||
1611 | if (e) | |
1612 | dbus_error_free(e); | |
1613 | } | |
b81884e7 LP |
1614 | |
1615 | SET_FOREACH(dep, ret->unit->meta.dependencies[UNIT_BOUND_BY], i) | |
cebe0d41 | 1616 | if ((r = transaction_add_job_and_dependencies(m, type, dep, ret, true, override, false, false, ignore_order, e, NULL)) < 0) { |
41242c42 LP |
1617 | |
1618 | if (r != -EBADR) | |
1619 | goto fail; | |
1620 | ||
1621 | if (e) | |
1622 | dbus_error_free(e); | |
1623 | } | |
e5b5ae50 LP |
1624 | } |
1625 | ||
1626 | /* JOB_VERIFY_STARTED, JOB_RELOAD require no dependency handling */ | |
1627 | } | |
60918275 | 1628 | |
c0dafa48 LP |
1629 | if (_ret) |
1630 | *_ret = ret; | |
1631 | ||
60918275 LP |
1632 | return 0; |
1633 | ||
1634 | fail: | |
e5b5ae50 LP |
1635 | return r; |
1636 | } | |
1637 | ||
c497c7a9 LP |
1638 | static int transaction_add_isolate_jobs(Manager *m) { |
1639 | Iterator i; | |
1640 | Unit *u; | |
1641 | char *k; | |
1642 | int r; | |
1643 | ||
1644 | assert(m); | |
1645 | ||
1646 | HASHMAP_FOREACH_KEY(u, k, m->units, i) { | |
1647 | ||
1648 | /* ignore aliases */ | |
1649 | if (u->meta.id != k) | |
1650 | continue; | |
1651 | ||
c8f4d764 | 1652 | if (u->meta.ignore_on_isolate) |
c497c7a9 LP |
1653 | continue; |
1654 | ||
1655 | /* No need to stop inactive jobs */ | |
2ce5c8f9 | 1656 | if (UNIT_IS_INACTIVE_OR_FAILED(unit_active_state(u)) && !u->meta.job) |
c497c7a9 LP |
1657 | continue; |
1658 | ||
1659 | /* Is there already something listed for this? */ | |
1660 | if (hashmap_get(m->transaction_jobs, u)) | |
1661 | continue; | |
1662 | ||
cebe0d41 | 1663 | if ((r = transaction_add_job_and_dependencies(m, JOB_STOP, u, NULL, true, false, false, false, false, NULL, NULL)) < 0) |
c497c7a9 LP |
1664 | log_warning("Cannot add isolate job for unit %s, ignoring: %s", u->meta.id, strerror(-r)); |
1665 | } | |
1666 | ||
1667 | return 0; | |
1668 | } | |
1669 | ||
398ef8ba | 1670 | int manager_add_job(Manager *m, JobType type, Unit *unit, JobMode mode, bool override, DBusError *e, Job **_ret) { |
e5b5ae50 LP |
1671 | int r; |
1672 | Job *ret; | |
1673 | ||
1674 | assert(m); | |
1675 | assert(type < _JOB_TYPE_MAX); | |
87f0e418 | 1676 | assert(unit); |
e5b5ae50 | 1677 | assert(mode < _JOB_MODE_MAX); |
60918275 | 1678 | |
398ef8ba LP |
1679 | if (mode == JOB_ISOLATE && type != JOB_START) { |
1680 | dbus_set_error(e, BUS_ERROR_INVALID_JOB_MODE, "Isolate is only valid for start."); | |
c497c7a9 | 1681 | return -EINVAL; |
398ef8ba | 1682 | } |
c497c7a9 | 1683 | |
2528a7a6 LP |
1684 | if (mode == JOB_ISOLATE && !unit->meta.allow_isolate) { |
1685 | dbus_set_error(e, BUS_ERROR_NO_ISOLATION, "Operation refused, unit may not be isolated."); | |
1686 | return -EPERM; | |
1687 | } | |
1688 | ||
e43ac878 | 1689 | log_debug("Trying to enqueue job %s/%s/%s", unit->meta.id, job_type_to_string(type), job_mode_to_string(mode)); |
9f04bd52 | 1690 | |
cebe0d41 LP |
1691 | if ((r = transaction_add_job_and_dependencies(m, type, unit, NULL, true, override, false, |
1692 | mode == JOB_IGNORE_DEPENDENCIES || mode == JOB_IGNORE_REQUIREMENTS, | |
1693 | mode == JOB_IGNORE_DEPENDENCIES, e, &ret)) < 0) { | |
11dd41ce | 1694 | transaction_abort(m); |
e5b5ae50 LP |
1695 | return r; |
1696 | } | |
11dd41ce | 1697 | |
c497c7a9 LP |
1698 | if (mode == JOB_ISOLATE) |
1699 | if ((r = transaction_add_isolate_jobs(m)) < 0) { | |
1700 | transaction_abort(m); | |
1701 | return r; | |
1702 | } | |
1703 | ||
398ef8ba | 1704 | if ((r = transaction_activate(m, mode, e)) < 0) |
e5b5ae50 LP |
1705 | return r; |
1706 | ||
9e2f7c11 | 1707 | log_debug("Enqueued job %s/%s as %u", unit->meta.id, job_type_to_string(type), (unsigned) ret->id); |
f50e0a01 | 1708 | |
e5b5ae50 LP |
1709 | if (_ret) |
1710 | *_ret = ret; | |
60918275 | 1711 | |
e5b5ae50 LP |
1712 | return 0; |
1713 | } | |
60918275 | 1714 | |
398ef8ba | 1715 | int manager_add_job_by_name(Manager *m, JobType type, const char *name, JobMode mode, bool override, DBusError *e, Job **_ret) { |
28247076 LP |
1716 | Unit *unit; |
1717 | int r; | |
1718 | ||
1719 | assert(m); | |
1720 | assert(type < _JOB_TYPE_MAX); | |
1721 | assert(name); | |
1722 | assert(mode < _JOB_MODE_MAX); | |
1723 | ||
398ef8ba | 1724 | if ((r = manager_load_unit(m, name, NULL, NULL, &unit)) < 0) |
28247076 LP |
1725 | return r; |
1726 | ||
398ef8ba | 1727 | return manager_add_job(m, type, unit, mode, override, e, _ret); |
28247076 LP |
1728 | } |
1729 | ||
60918275 LP |
1730 | Job *manager_get_job(Manager *m, uint32_t id) { |
1731 | assert(m); | |
1732 | ||
1733 | return hashmap_get(m->jobs, UINT32_TO_PTR(id)); | |
1734 | } | |
1735 | ||
87f0e418 | 1736 | Unit *manager_get_unit(Manager *m, const char *name) { |
60918275 LP |
1737 | assert(m); |
1738 | assert(name); | |
1739 | ||
87f0e418 | 1740 | return hashmap_get(m->units, name); |
60918275 LP |
1741 | } |
1742 | ||
c1e1601e | 1743 | unsigned manager_dispatch_load_queue(Manager *m) { |
60918275 | 1744 | Meta *meta; |
c1e1601e | 1745 | unsigned n = 0; |
60918275 LP |
1746 | |
1747 | assert(m); | |
1748 | ||
223dabab LP |
1749 | /* Make sure we are not run recursively */ |
1750 | if (m->dispatching_load_queue) | |
c1e1601e | 1751 | return 0; |
223dabab LP |
1752 | |
1753 | m->dispatching_load_queue = true; | |
1754 | ||
87f0e418 | 1755 | /* Dispatches the load queue. Takes a unit from the queue and |
60918275 LP |
1756 | * tries to load its data until the queue is empty */ |
1757 | ||
1758 | while ((meta = m->load_queue)) { | |
034c6ed7 LP |
1759 | assert(meta->in_load_queue); |
1760 | ||
399ab2b1 | 1761 | unit_load((Unit*) meta); |
c1e1601e | 1762 | n++; |
60918275 LP |
1763 | } |
1764 | ||
223dabab | 1765 | m->dispatching_load_queue = false; |
c1e1601e | 1766 | return n; |
60918275 LP |
1767 | } |
1768 | ||
398ef8ba | 1769 | int manager_load_unit_prepare(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret) { |
87f0e418 | 1770 | Unit *ret; |
60918275 LP |
1771 | int r; |
1772 | ||
1773 | assert(m); | |
9e2f7c11 | 1774 | assert(name || path); |
60918275 | 1775 | |
db06e3b6 LP |
1776 | /* This will prepare the unit for loading, but not actually |
1777 | * load anything from disk. */ | |
0301abf4 | 1778 | |
398ef8ba LP |
1779 | if (path && !is_path(path)) { |
1780 | dbus_set_error(e, BUS_ERROR_INVALID_PATH, "Path %s is not absolute.", path); | |
9e2f7c11 | 1781 | return -EINVAL; |
398ef8ba | 1782 | } |
9e2f7c11 LP |
1783 | |
1784 | if (!name) | |
1785 | name = file_name_from_path(path); | |
1786 | ||
b9c0d441 | 1787 | if (!unit_name_is_valid(name, false)) { |
398ef8ba | 1788 | dbus_set_error(e, BUS_ERROR_INVALID_NAME, "Unit name %s is not valid.", name); |
9e2f7c11 | 1789 | return -EINVAL; |
398ef8ba | 1790 | } |
60918275 | 1791 | |
87f0e418 | 1792 | if ((ret = manager_get_unit(m, name))) { |
034c6ed7 | 1793 | *_ret = ret; |
413d6313 | 1794 | return 1; |
034c6ed7 | 1795 | } |
60918275 | 1796 | |
87f0e418 | 1797 | if (!(ret = unit_new(m))) |
60918275 LP |
1798 | return -ENOMEM; |
1799 | ||
9e2f7c11 | 1800 | if (path) |
6be1e7d5 | 1801 | if (!(ret->meta.fragment_path = strdup(path))) { |
0301abf4 LP |
1802 | unit_free(ret); |
1803 | return -ENOMEM; | |
1804 | } | |
0301abf4 | 1805 | |
87f0e418 LP |
1806 | if ((r = unit_add_name(ret, name)) < 0) { |
1807 | unit_free(ret); | |
1ffba6fe | 1808 | return r; |
60918275 LP |
1809 | } |
1810 | ||
87f0e418 | 1811 | unit_add_to_load_queue(ret); |
c1e1601e | 1812 | unit_add_to_dbus_queue(ret); |
949061f0 | 1813 | unit_add_to_gc_queue(ret); |
c1e1601e | 1814 | |
db06e3b6 LP |
1815 | if (_ret) |
1816 | *_ret = ret; | |
1817 | ||
1818 | return 0; | |
1819 | } | |
1820 | ||
398ef8ba | 1821 | int manager_load_unit(Manager *m, const char *name, const char *path, DBusError *e, Unit **_ret) { |
db06e3b6 LP |
1822 | int r; |
1823 | ||
1824 | assert(m); | |
1825 | ||
1826 | /* This will load the service information files, but not actually | |
1827 | * start any services or anything. */ | |
1828 | ||
398ef8ba | 1829 | if ((r = manager_load_unit_prepare(m, name, path, e, _ret)) != 0) |
db06e3b6 LP |
1830 | return r; |
1831 | ||
f50e0a01 | 1832 | manager_dispatch_load_queue(m); |
60918275 | 1833 | |
9e2f7c11 | 1834 | if (_ret) |
413d6313 | 1835 | *_ret = unit_follow_merge(*_ret); |
9e2f7c11 | 1836 | |
60918275 LP |
1837 | return 0; |
1838 | } | |
a66d02c3 | 1839 | |
cea8e32e | 1840 | void manager_dump_jobs(Manager *s, FILE *f, const char *prefix) { |
034c6ed7 | 1841 | Iterator i; |
a66d02c3 LP |
1842 | Job *j; |
1843 | ||
1844 | assert(s); | |
1845 | assert(f); | |
1846 | ||
034c6ed7 | 1847 | HASHMAP_FOREACH(j, s->jobs, i) |
cea8e32e | 1848 | job_dump(j, f, prefix); |
a66d02c3 LP |
1849 | } |
1850 | ||
87f0e418 | 1851 | void manager_dump_units(Manager *s, FILE *f, const char *prefix) { |
034c6ed7 | 1852 | Iterator i; |
87f0e418 | 1853 | Unit *u; |
11dd41ce | 1854 | const char *t; |
a66d02c3 LP |
1855 | |
1856 | assert(s); | |
1857 | assert(f); | |
1858 | ||
87f0e418 | 1859 | HASHMAP_FOREACH_KEY(u, t, s->units, i) |
9e2f7c11 | 1860 | if (u->meta.id == t) |
87f0e418 | 1861 | unit_dump(u, f, prefix); |
a66d02c3 | 1862 | } |
7fad411c LP |
1863 | |
1864 | void manager_clear_jobs(Manager *m) { | |
1865 | Job *j; | |
1866 | ||
1867 | assert(m); | |
1868 | ||
1869 | transaction_abort(m); | |
1870 | ||
1871 | while ((j = hashmap_first(m->jobs))) | |
c77bc38d | 1872 | job_finish_and_invalidate(j, JOB_CANCELED); |
7fad411c | 1873 | } |
83c60c9f | 1874 | |
c1e1601e | 1875 | unsigned manager_dispatch_run_queue(Manager *m) { |
83c60c9f | 1876 | Job *j; |
c1e1601e | 1877 | unsigned n = 0; |
83c60c9f | 1878 | |
034c6ed7 | 1879 | if (m->dispatching_run_queue) |
c1e1601e | 1880 | return 0; |
034c6ed7 LP |
1881 | |
1882 | m->dispatching_run_queue = true; | |
9152c765 | 1883 | |
034c6ed7 | 1884 | while ((j = m->run_queue)) { |
ac1135be | 1885 | assert(j->installed); |
034c6ed7 LP |
1886 | assert(j->in_run_queue); |
1887 | ||
1888 | job_run_and_invalidate(j); | |
c1e1601e | 1889 | n++; |
9152c765 | 1890 | } |
034c6ed7 LP |
1891 | |
1892 | m->dispatching_run_queue = false; | |
c1e1601e LP |
1893 | return n; |
1894 | } | |
1895 | ||
1896 | unsigned manager_dispatch_dbus_queue(Manager *m) { | |
1897 | Job *j; | |
1898 | Meta *meta; | |
1899 | unsigned n = 0; | |
1900 | ||
1901 | assert(m); | |
1902 | ||
1903 | if (m->dispatching_dbus_queue) | |
1904 | return 0; | |
1905 | ||
1906 | m->dispatching_dbus_queue = true; | |
1907 | ||
1908 | while ((meta = m->dbus_unit_queue)) { | |
23a177ef | 1909 | assert(meta->in_dbus_queue); |
c1e1601e | 1910 | |
399ab2b1 | 1911 | bus_unit_send_change_signal((Unit*) meta); |
c1e1601e LP |
1912 | n++; |
1913 | } | |
1914 | ||
1915 | while ((j = m->dbus_job_queue)) { | |
1916 | assert(j->in_dbus_queue); | |
1917 | ||
1918 | bus_job_send_change_signal(j); | |
1919 | n++; | |
1920 | } | |
1921 | ||
1922 | m->dispatching_dbus_queue = false; | |
1923 | return n; | |
9152c765 LP |
1924 | } |
1925 | ||
8c47c732 LP |
1926 | static int manager_process_notify_fd(Manager *m) { |
1927 | ssize_t n; | |
1928 | ||
1929 | assert(m); | |
1930 | ||
1931 | for (;;) { | |
1932 | char buf[4096]; | |
1933 | struct msghdr msghdr; | |
1934 | struct iovec iovec; | |
1935 | struct ucred *ucred; | |
1936 | union { | |
1937 | struct cmsghdr cmsghdr; | |
1938 | uint8_t buf[CMSG_SPACE(sizeof(struct ucred))]; | |
1939 | } control; | |
1940 | Unit *u; | |
1941 | char **tags; | |
1942 | ||
1943 | zero(iovec); | |
1944 | iovec.iov_base = buf; | |
1945 | iovec.iov_len = sizeof(buf)-1; | |
1946 | ||
1947 | zero(control); | |
1948 | zero(msghdr); | |
1949 | msghdr.msg_iov = &iovec; | |
1950 | msghdr.msg_iovlen = 1; | |
1951 | msghdr.msg_control = &control; | |
1952 | msghdr.msg_controllen = sizeof(control); | |
1953 | ||
1954 | if ((n = recvmsg(m->notify_watch.fd, &msghdr, MSG_DONTWAIT)) <= 0) { | |
1955 | if (n >= 0) | |
1956 | return -EIO; | |
1957 | ||
f6144808 | 1958 | if (errno == EAGAIN || errno == EINTR) |
8c47c732 LP |
1959 | break; |
1960 | ||
1961 | return -errno; | |
1962 | } | |
1963 | ||
1964 | if (msghdr.msg_controllen < CMSG_LEN(sizeof(struct ucred)) || | |
1965 | control.cmsghdr.cmsg_level != SOL_SOCKET || | |
1966 | control.cmsghdr.cmsg_type != SCM_CREDENTIALS || | |
1967 | control.cmsghdr.cmsg_len != CMSG_LEN(sizeof(struct ucred))) { | |
1968 | log_warning("Received notify message without credentials. Ignoring."); | |
1969 | continue; | |
1970 | } | |
1971 | ||
1972 | ucred = (struct ucred*) CMSG_DATA(&control.cmsghdr); | |
1973 | ||
c6c18be3 | 1974 | if (!(u = hashmap_get(m->watch_pids, LONG_TO_PTR(ucred->pid)))) |
8c47c732 LP |
1975 | if (!(u = cgroup_unit_by_pid(m, ucred->pid))) { |
1976 | log_warning("Cannot find unit for notify message of PID %lu.", (unsigned long) ucred->pid); | |
1977 | continue; | |
1978 | } | |
1979 | ||
8c40acf7 LP |
1980 | assert((size_t) n < sizeof(buf)); |
1981 | buf[n] = 0; | |
8c47c732 LP |
1982 | if (!(tags = strv_split(buf, "\n\r"))) |
1983 | return -ENOMEM; | |
1984 | ||
1985 | log_debug("Got notification message for unit %s", u->meta.id); | |
1986 | ||
1987 | if (UNIT_VTABLE(u)->notify_message) | |
c952c6ec | 1988 | UNIT_VTABLE(u)->notify_message(u, ucred->pid, tags); |
8c47c732 LP |
1989 | |
1990 | strv_free(tags); | |
1991 | } | |
1992 | ||
1993 | return 0; | |
1994 | } | |
1995 | ||
034c6ed7 | 1996 | static int manager_dispatch_sigchld(Manager *m) { |
9152c765 LP |
1997 | assert(m); |
1998 | ||
1999 | for (;;) { | |
2000 | siginfo_t si; | |
87f0e418 | 2001 | Unit *u; |
8c47c732 | 2002 | int r; |
9152c765 LP |
2003 | |
2004 | zero(si); | |
4112df16 LP |
2005 | |
2006 | /* First we call waitd() for a PID and do not reap the | |
2007 | * zombie. That way we can still access /proc/$PID for | |
2008 | * it while it is a zombie. */ | |
2009 | if (waitid(P_ALL, 0, &si, WEXITED|WNOHANG|WNOWAIT) < 0) { | |
acbb0225 LP |
2010 | |
2011 | if (errno == ECHILD) | |
2012 | break; | |
2013 | ||
4112df16 LP |
2014 | if (errno == EINTR) |
2015 | continue; | |
2016 | ||
9152c765 | 2017 | return -errno; |
acbb0225 | 2018 | } |
9152c765 | 2019 | |
4112df16 | 2020 | if (si.si_pid <= 0) |
9152c765 LP |
2021 | break; |
2022 | ||
15d5d9d9 | 2023 | if (si.si_code == CLD_EXITED || si.si_code == CLD_KILLED || si.si_code == CLD_DUMPED) { |
4112df16 LP |
2024 | char *name = NULL; |
2025 | ||
2026 | get_process_name(si.si_pid, &name); | |
bb00e604 | 2027 | log_debug("Got SIGCHLD for process %lu (%s)", (unsigned long) si.si_pid, strna(name)); |
4112df16 LP |
2028 | free(name); |
2029 | } | |
2030 | ||
8c47c732 LP |
2031 | /* Let's flush any message the dying child might still |
2032 | * have queued for us. This ensures that the process | |
2033 | * still exists in /proc so that we can figure out | |
2034 | * which cgroup and hence unit it belongs to. */ | |
2035 | if ((r = manager_process_notify_fd(m)) < 0) | |
2036 | return r; | |
2037 | ||
2038 | /* And now figure out the unit this belongs to */ | |
c6c18be3 | 2039 | if (!(u = hashmap_get(m->watch_pids, LONG_TO_PTR(si.si_pid)))) |
8c47c732 LP |
2040 | u = cgroup_unit_by_pid(m, si.si_pid); |
2041 | ||
4112df16 LP |
2042 | /* And now, we actually reap the zombie. */ |
2043 | if (waitid(P_PID, si.si_pid, &si, WEXITED) < 0) { | |
2044 | if (errno == EINTR) | |
2045 | continue; | |
2046 | ||
2047 | return -errno; | |
2048 | } | |
2049 | ||
034c6ed7 LP |
2050 | if (si.si_code != CLD_EXITED && si.si_code != CLD_KILLED && si.si_code != CLD_DUMPED) |
2051 | continue; | |
2052 | ||
bb00e604 LP |
2053 | log_debug("Child %lu died (code=%s, status=%i/%s)", |
2054 | (long unsigned) si.si_pid, | |
4112df16 LP |
2055 | sigchld_code_to_string(si.si_code), |
2056 | si.si_status, | |
d06dacd0 LP |
2057 | strna(si.si_code == CLD_EXITED |
2058 | ? exit_status_to_string(si.si_status, EXIT_STATUS_FULL) | |
2059 | : signal_to_string(si.si_status))); | |
acbb0225 | 2060 | |
8c47c732 | 2061 | if (!u) |
9152c765 LP |
2062 | continue; |
2063 | ||
c6c18be3 | 2064 | log_debug("Child %lu belongs to %s", (long unsigned) si.si_pid, u->meta.id); |
6c1a0478 | 2065 | |
c6c18be3 | 2066 | hashmap_remove(m->watch_pids, LONG_TO_PTR(si.si_pid)); |
87f0e418 | 2067 | UNIT_VTABLE(u)->sigchld_event(u, si.si_pid, si.si_code, si.si_status); |
9152c765 LP |
2068 | } |
2069 | ||
2070 | return 0; | |
2071 | } | |
2072 | ||
7d793605 | 2073 | static int manager_start_target(Manager *m, const char *name, JobMode mode) { |
28247076 | 2074 | int r; |
398ef8ba LP |
2075 | DBusError error; |
2076 | ||
2077 | dbus_error_init(&error); | |
2078 | ||
af2d49f7 | 2079 | log_debug("Activating special unit %s", name); |
1e001f52 | 2080 | |
398ef8ba LP |
2081 | if ((r = manager_add_job_by_name(m, JOB_START, name, mode, true, &error, NULL)) < 0) |
2082 | log_error("Failed to enqueue %s job: %s", name, bus_error(&error, r)); | |
28247076 | 2083 | |
398ef8ba | 2084 | dbus_error_free(&error); |
a1b256b0 LP |
2085 | |
2086 | return r; | |
28247076 LP |
2087 | } |
2088 | ||
a16e1123 | 2089 | static int manager_process_signal_fd(Manager *m) { |
9152c765 LP |
2090 | ssize_t n; |
2091 | struct signalfd_siginfo sfsi; | |
2092 | bool sigchld = false; | |
2093 | ||
2094 | assert(m); | |
2095 | ||
2096 | for (;;) { | |
acbb0225 | 2097 | if ((n = read(m->signal_watch.fd, &sfsi, sizeof(sfsi))) != sizeof(sfsi)) { |
9152c765 LP |
2098 | |
2099 | if (n >= 0) | |
2100 | return -EIO; | |
2101 | ||
63090775 | 2102 | if (errno == EINTR || errno == EAGAIN) |
acbb0225 | 2103 | break; |
9152c765 LP |
2104 | |
2105 | return -errno; | |
2106 | } | |
2107 | ||
67370238 LP |
2108 | if (sfsi.ssi_pid > 0) { |
2109 | char *p = NULL; | |
2110 | ||
dfa7f7e1 LP |
2111 | get_process_name(sfsi.ssi_pid, &p); |
2112 | ||
67370238 LP |
2113 | log_debug("Received SIG%s from PID %lu (%s).", |
2114 | strna(signal_to_string(sfsi.ssi_signo)), | |
2115 | (unsigned long) sfsi.ssi_pid, strna(p)); | |
2116 | free(p); | |
2117 | } else | |
2118 | log_debug("Received SIG%s.", strna(signal_to_string(sfsi.ssi_signo))); | |
1e001f52 | 2119 | |
b9cd2ec1 LP |
2120 | switch (sfsi.ssi_signo) { |
2121 | ||
4112df16 | 2122 | case SIGCHLD: |
9152c765 | 2123 | sigchld = true; |
b9cd2ec1 LP |
2124 | break; |
2125 | ||
6632c602 | 2126 | case SIGTERM: |
a3d4e06d | 2127 | if (m->running_as == MANAGER_SYSTEM) { |
db06e3b6 LP |
2128 | /* This is for compatibility with the |
2129 | * original sysvinit */ | |
e11dc4a2 | 2130 | m->exit_code = MANAGER_REEXECUTE; |
a1b256b0 LP |
2131 | break; |
2132 | } | |
84e9af1e | 2133 | |
a1b256b0 | 2134 | /* Fall through */ |
e11dc4a2 LP |
2135 | |
2136 | case SIGINT: | |
a3d4e06d | 2137 | if (m->running_as == MANAGER_SYSTEM) { |
7d793605 | 2138 | manager_start_target(m, SPECIAL_CTRL_ALT_DEL_TARGET, JOB_REPLACE); |
84e9af1e LP |
2139 | break; |
2140 | } | |
2141 | ||
a1b256b0 | 2142 | /* Run the exit target if there is one, if not, just exit. */ |
0003d1ab | 2143 | if (manager_start_target(m, SPECIAL_EXIT_TARGET, JOB_REPLACE) < 0) { |
a1b256b0 LP |
2144 | m->exit_code = MANAGER_EXIT; |
2145 | return 0; | |
2146 | } | |
2147 | ||
2148 | break; | |
84e9af1e | 2149 | |
28247076 | 2150 | case SIGWINCH: |
a3d4e06d | 2151 | if (m->running_as == MANAGER_SYSTEM) |
7d793605 | 2152 | manager_start_target(m, SPECIAL_KBREQUEST_TARGET, JOB_REPLACE); |
84e9af1e | 2153 | |
28247076 LP |
2154 | /* This is a nop on non-init */ |
2155 | break; | |
84e9af1e | 2156 | |
28247076 | 2157 | case SIGPWR: |
a3d4e06d | 2158 | if (m->running_as == MANAGER_SYSTEM) |
7d793605 | 2159 | manager_start_target(m, SPECIAL_SIGPWR_TARGET, JOB_REPLACE); |
84e9af1e | 2160 | |
28247076 | 2161 | /* This is a nop on non-init */ |
84e9af1e | 2162 | break; |
6632c602 | 2163 | |
1005d14f | 2164 | case SIGUSR1: { |
57ee42ce LP |
2165 | Unit *u; |
2166 | ||
2167 | u = manager_get_unit(m, SPECIAL_DBUS_SERVICE); | |
2168 | ||
2169 | if (!u || UNIT_IS_ACTIVE_OR_RELOADING(unit_active_state(u))) { | |
2170 | log_info("Trying to reconnect to bus..."); | |
3996fbe2 | 2171 | bus_init(m, true); |
57ee42ce LP |
2172 | } |
2173 | ||
2174 | if (!u || !UNIT_IS_ACTIVE_OR_ACTIVATING(unit_active_state(u))) { | |
2175 | log_info("Loading D-Bus service..."); | |
7d793605 | 2176 | manager_start_target(m, SPECIAL_DBUS_SERVICE, JOB_REPLACE); |
57ee42ce LP |
2177 | } |
2178 | ||
2179 | break; | |
2180 | } | |
2181 | ||
2149e37c LP |
2182 | case SIGUSR2: { |
2183 | FILE *f; | |
2184 | char *dump = NULL; | |
2185 | size_t size; | |
2186 | ||
2187 | if (!(f = open_memstream(&dump, &size))) { | |
2188 | log_warning("Failed to allocate memory stream."); | |
2189 | break; | |
2190 | } | |
2191 | ||
2192 | manager_dump_units(m, f, "\t"); | |
2193 | manager_dump_jobs(m, f, "\t"); | |
2194 | ||
2195 | if (ferror(f)) { | |
2196 | fclose(f); | |
2197 | free(dump); | |
2198 | log_warning("Failed to write status stream"); | |
2199 | break; | |
2200 | } | |
2201 | ||
2202 | fclose(f); | |
2203 | log_dump(LOG_INFO, dump); | |
2204 | free(dump); | |
2205 | ||
1005d14f | 2206 | break; |
2149e37c | 2207 | } |
1005d14f | 2208 | |
a16e1123 LP |
2209 | case SIGHUP: |
2210 | m->exit_code = MANAGER_RELOAD; | |
2211 | break; | |
2212 | ||
7d793605 | 2213 | default: { |
253ee27a | 2214 | |
0003d1ab LP |
2215 | /* Starting SIGRTMIN+0 */ |
2216 | static const char * const target_table[] = { | |
7d793605 LP |
2217 | [0] = SPECIAL_DEFAULT_TARGET, |
2218 | [1] = SPECIAL_RESCUE_TARGET, | |
f057408c | 2219 | [2] = SPECIAL_EMERGENCY_TARGET, |
7d793605 LP |
2220 | [3] = SPECIAL_HALT_TARGET, |
2221 | [4] = SPECIAL_POWEROFF_TARGET, | |
0003d1ab LP |
2222 | [5] = SPECIAL_REBOOT_TARGET, |
2223 | [6] = SPECIAL_KEXEC_TARGET | |
2224 | }; | |
2225 | ||
2226 | /* Starting SIGRTMIN+13, so that target halt and system halt are 10 apart */ | |
2227 | static const ManagerExitCode code_table[] = { | |
2228 | [0] = MANAGER_HALT, | |
2229 | [1] = MANAGER_POWEROFF, | |
2230 | [2] = MANAGER_REBOOT, | |
2231 | [3] = MANAGER_KEXEC | |
7d793605 LP |
2232 | }; |
2233 | ||
2234 | if ((int) sfsi.ssi_signo >= SIGRTMIN+0 && | |
0003d1ab | 2235 | (int) sfsi.ssi_signo < SIGRTMIN+(int) ELEMENTSOF(target_table)) { |
764e9b5f MS |
2236 | int idx = (int) sfsi.ssi_signo - SIGRTMIN; |
2237 | manager_start_target(m, target_table[idx], | |
2238 | (idx == 1 || idx == 2) ? JOB_ISOLATE : JOB_REPLACE); | |
7d793605 LP |
2239 | break; |
2240 | } | |
2241 | ||
0003d1ab LP |
2242 | if ((int) sfsi.ssi_signo >= SIGRTMIN+13 && |
2243 | (int) sfsi.ssi_signo < SIGRTMIN+13+(int) ELEMENTSOF(code_table)) { | |
2244 | m->exit_code = code_table[sfsi.ssi_signo - SIGRTMIN - 13]; | |
2245 | break; | |
2246 | } | |
2247 | ||
0658666b LP |
2248 | switch (sfsi.ssi_signo - SIGRTMIN) { |
2249 | ||
2250 | case 20: | |
2251 | log_debug("Enabling showing of status."); | |
27d340c7 | 2252 | manager_set_show_status(m, true); |
0658666b LP |
2253 | break; |
2254 | ||
2255 | case 21: | |
2256 | log_debug("Disabling showing of status."); | |
27d340c7 | 2257 | manager_set_show_status(m, false); |
0658666b LP |
2258 | break; |
2259 | ||
253ee27a LP |
2260 | case 22: |
2261 | log_set_max_level(LOG_DEBUG); | |
2262 | log_notice("Setting log level to debug."); | |
2263 | break; | |
2264 | ||
2265 | case 23: | |
2266 | log_set_max_level(LOG_INFO); | |
2267 | log_notice("Setting log level to info."); | |
2268 | break; | |
2269 | ||
2270 | case 27: | |
2271 | log_set_target(LOG_TARGET_CONSOLE); | |
2272 | log_notice("Setting log target to console."); | |
2273 | break; | |
2274 | ||
2275 | case 28: | |
2276 | log_set_target(LOG_TARGET_KMSG); | |
2277 | log_notice("Setting log target to kmsg."); | |
2278 | break; | |
2279 | ||
2280 | case 29: | |
2281 | log_set_target(LOG_TARGET_SYSLOG_OR_KMSG); | |
2282 | log_notice("Setting log target to syslog-or-kmsg."); | |
2283 | break; | |
2284 | ||
0658666b LP |
2285 | default: |
2286 | log_warning("Got unhandled signal <%s>.", strna(signal_to_string(sfsi.ssi_signo))); | |
2287 | } | |
b9cd2ec1 | 2288 | } |
7d793605 | 2289 | } |
9152c765 LP |
2290 | } |
2291 | ||
2292 | if (sigchld) | |
034c6ed7 LP |
2293 | return manager_dispatch_sigchld(m); |
2294 | ||
2295 | return 0; | |
2296 | } | |
2297 | ||
a16e1123 | 2298 | static int process_event(Manager *m, struct epoll_event *ev) { |
034c6ed7 | 2299 | int r; |
acbb0225 | 2300 | Watch *w; |
034c6ed7 LP |
2301 | |
2302 | assert(m); | |
2303 | assert(ev); | |
2304 | ||
3df5bf61 | 2305 | assert_se(w = ev->data.ptr); |
034c6ed7 | 2306 | |
40dde66f LP |
2307 | if (w->type == WATCH_INVALID) |
2308 | return 0; | |
2309 | ||
acbb0225 | 2310 | switch (w->type) { |
034c6ed7 | 2311 | |
ef734fd6 | 2312 | case WATCH_SIGNAL: |
034c6ed7 | 2313 | |
acbb0225 | 2314 | /* An incoming signal? */ |
f94ea366 | 2315 | if (ev->events != EPOLLIN) |
acbb0225 | 2316 | return -EINVAL; |
034c6ed7 | 2317 | |
a16e1123 | 2318 | if ((r = manager_process_signal_fd(m)) < 0) |
acbb0225 | 2319 | return r; |
034c6ed7 | 2320 | |
acbb0225 | 2321 | break; |
034c6ed7 | 2322 | |
8c47c732 LP |
2323 | case WATCH_NOTIFY: |
2324 | ||
2325 | /* An incoming daemon notification event? */ | |
2326 | if (ev->events != EPOLLIN) | |
2327 | return -EINVAL; | |
2328 | ||
2329 | if ((r = manager_process_notify_fd(m)) < 0) | |
2330 | return r; | |
2331 | ||
2332 | break; | |
2333 | ||
acbb0225 | 2334 | case WATCH_FD: |
034c6ed7 | 2335 | |
acbb0225 | 2336 | /* Some fd event, to be dispatched to the units */ |
ea430986 | 2337 | UNIT_VTABLE(w->data.unit)->fd_event(w->data.unit, w->fd, ev->events, w); |
acbb0225 | 2338 | break; |
034c6ed7 | 2339 | |
faf919f1 LP |
2340 | case WATCH_UNIT_TIMER: |
2341 | case WATCH_JOB_TIMER: { | |
acbb0225 LP |
2342 | uint64_t v; |
2343 | ssize_t k; | |
034c6ed7 | 2344 | |
acbb0225 | 2345 | /* Some timer event, to be dispatched to the units */ |
be888ebb | 2346 | if ((k = read(w->fd, &v, sizeof(v))) != sizeof(v)) { |
034c6ed7 | 2347 | |
acbb0225 LP |
2348 | if (k < 0 && (errno == EINTR || errno == EAGAIN)) |
2349 | break; | |
034c6ed7 | 2350 | |
acbb0225 | 2351 | return k < 0 ? -errno : -EIO; |
034c6ed7 LP |
2352 | } |
2353 | ||
faf919f1 LP |
2354 | if (w->type == WATCH_UNIT_TIMER) |
2355 | UNIT_VTABLE(w->data.unit)->timer_event(w->data.unit, v, w); | |
2356 | else | |
2357 | job_timer_event(w->data.job, v, w); | |
acbb0225 LP |
2358 | break; |
2359 | } | |
2360 | ||
ef734fd6 LP |
2361 | case WATCH_MOUNT: |
2362 | /* Some mount table change, intended for the mount subsystem */ | |
2363 | mount_fd_event(m, ev->events); | |
2364 | break; | |
2365 | ||
4e434314 LP |
2366 | case WATCH_SWAP: |
2367 | /* Some swap table change, intended for the swap subsystem */ | |
2368 | swap_fd_event(m, ev->events); | |
2369 | break; | |
2370 | ||
f94ea366 LP |
2371 | case WATCH_UDEV: |
2372 | /* Some notification from udev, intended for the device subsystem */ | |
2373 | device_fd_event(m, ev->events); | |
2374 | break; | |
2375 | ||
ea430986 LP |
2376 | case WATCH_DBUS_WATCH: |
2377 | bus_watch_event(m, w, ev->events); | |
2378 | break; | |
2379 | ||
2380 | case WATCH_DBUS_TIMEOUT: | |
2381 | bus_timeout_event(m, w, ev->events); | |
2382 | break; | |
2383 | ||
acbb0225 | 2384 | default: |
c5fd1e57 | 2385 | log_error("event type=%i", w->type); |
acbb0225 | 2386 | assert_not_reached("Unknown epoll event type."); |
034c6ed7 | 2387 | } |
9152c765 LP |
2388 | |
2389 | return 0; | |
2390 | } | |
2391 | ||
2392 | int manager_loop(Manager *m) { | |
2393 | int r; | |
9152c765 | 2394 | |
fac9f8df | 2395 | RATELIMIT_DEFINE(rl, 1*USEC_PER_SEC, 50000); |
ea430986 | 2396 | |
9152c765 | 2397 | assert(m); |
a16e1123 | 2398 | m->exit_code = MANAGER_RUNNING; |
9152c765 | 2399 | |
fe51822e LP |
2400 | /* Release the path cache */ |
2401 | set_free_free(m->unit_path_cache); | |
2402 | m->unit_path_cache = NULL; | |
2403 | ||
b0c918b9 LP |
2404 | manager_check_finished(m); |
2405 | ||
a4312405 LP |
2406 | /* There might still be some zombies hanging around from |
2407 | * before we were exec()'ed. Leat's reap them */ | |
2408 | if ((r = manager_dispatch_sigchld(m)) < 0) | |
2409 | return r; | |
2410 | ||
a16e1123 | 2411 | while (m->exit_code == MANAGER_RUNNING) { |
957ca890 LP |
2412 | struct epoll_event event; |
2413 | int n; | |
9152c765 | 2414 | |
ea430986 LP |
2415 | if (!ratelimit_test(&rl)) { |
2416 | /* Yay, something is going seriously wrong, pause a little */ | |
2417 | log_warning("Looping too fast. Throttling execution a little."); | |
2418 | sleep(1); | |
2419 | } | |
2420 | ||
37a8e683 | 2421 | if (manager_dispatch_load_queue(m) > 0) |
23a177ef LP |
2422 | continue; |
2423 | ||
37a8e683 | 2424 | if (manager_dispatch_run_queue(m) > 0) |
701cc384 LP |
2425 | continue; |
2426 | ||
37a8e683 | 2427 | if (bus_dispatch(m) > 0) |
c1e1601e | 2428 | continue; |
034c6ed7 | 2429 | |
37a8e683 | 2430 | if (manager_dispatch_cleanup_queue(m) > 0) |
c1e1601e LP |
2431 | continue; |
2432 | ||
37a8e683 | 2433 | if (manager_dispatch_gc_queue(m) > 0) |
c1e1601e LP |
2434 | continue; |
2435 | ||
2436 | if (manager_dispatch_dbus_queue(m) > 0) | |
ea430986 | 2437 | continue; |
ea430986 | 2438 | |
e04aad61 LP |
2439 | if (swap_dispatch_reload(m) > 0) |
2440 | continue; | |
2441 | ||
957ca890 | 2442 | if ((n = epoll_wait(m->epoll_fd, &event, 1, -1)) < 0) { |
9152c765 | 2443 | |
6089f4a9 | 2444 | if (errno == EINTR) |
9152c765 LP |
2445 | continue; |
2446 | ||
2447 | return -errno; | |
2448 | } | |
2449 | ||
957ca890 | 2450 | assert(n == 1); |
b9cd2ec1 | 2451 | |
a16e1123 | 2452 | if ((r = process_event(m, &event)) < 0) |
957ca890 | 2453 | return r; |
a16e1123 | 2454 | } |
957ca890 | 2455 | |
a16e1123 | 2456 | return m->exit_code; |
83c60c9f | 2457 | } |
ea430986 LP |
2458 | |
2459 | int manager_get_unit_from_dbus_path(Manager *m, const char *s, Unit **_u) { | |
2460 | char *n; | |
2461 | Unit *u; | |
2462 | ||
2463 | assert(m); | |
2464 | assert(s); | |
2465 | assert(_u); | |
2466 | ||
2467 | if (!startswith(s, "/org/freedesktop/systemd1/unit/")) | |
2468 | return -EINVAL; | |
2469 | ||
2470 | if (!(n = bus_path_unescape(s+31))) | |
2471 | return -ENOMEM; | |
2472 | ||
2473 | u = manager_get_unit(m, n); | |
2474 | free(n); | |
2475 | ||
2476 | if (!u) | |
2477 | return -ENOENT; | |
2478 | ||
2479 | *_u = u; | |
2480 | ||
2481 | return 0; | |
2482 | } | |
86fbf370 LP |
2483 | |
2484 | int manager_get_job_from_dbus_path(Manager *m, const char *s, Job **_j) { | |
2485 | Job *j; | |
2486 | unsigned id; | |
2487 | int r; | |
2488 | ||
2489 | assert(m); | |
2490 | assert(s); | |
2491 | assert(_j); | |
2492 | ||
2493 | if (!startswith(s, "/org/freedesktop/systemd1/job/")) | |
2494 | return -EINVAL; | |
2495 | ||
2496 | if ((r = safe_atou(s + 30, &id)) < 0) | |
2497 | return r; | |
2498 | ||
2499 | if (!(j = manager_get_job(m, id))) | |
2500 | return -ENOENT; | |
2501 | ||
2502 | *_j = j; | |
2503 | ||
2504 | return 0; | |
2505 | } | |
dfcd764e | 2506 | |
4927fcae | 2507 | void manager_send_unit_audit(Manager *m, Unit *u, int type, bool success) { |
e537352b | 2508 | |
4927fcae LP |
2509 | #ifdef HAVE_AUDIT |
2510 | char *p; | |
e537352b | 2511 | |
4927fcae | 2512 | if (m->audit_fd < 0) |
e537352b LP |
2513 | return; |
2514 | ||
bbd3a7ba LP |
2515 | /* Don't generate audit events if the service was already |
2516 | * started and we're just deserializing */ | |
a7556052 | 2517 | if (m->n_reloading > 0) |
bbd3a7ba LP |
2518 | return; |
2519 | ||
f1dd0c3f LP |
2520 | if (m->running_as != MANAGER_SYSTEM) |
2521 | return; | |
2522 | ||
2523 | if (u->meta.type != UNIT_SERVICE) | |
2524 | return; | |
2525 | ||
4927fcae LP |
2526 | if (!(p = unit_name_to_prefix_and_instance(u->meta.id))) { |
2527 | log_error("Failed to allocate unit name for audit message: %s", strerror(ENOMEM)); | |
e537352b LP |
2528 | return; |
2529 | } | |
2530 | ||
391ade86 LP |
2531 | if (audit_log_user_comm_message(m->audit_fd, type, "", p, NULL, NULL, NULL, success) < 0) { |
2532 | log_warning("Failed to send audit message: %m"); | |
2533 | ||
2534 | if (errno == EPERM) { | |
2535 | /* We aren't allowed to send audit messages? | |
2536 | * Then let's not retry again, to avoid | |
2537 | * spamming the user with the same and same | |
2538 | * messages over and over. */ | |
2539 | ||
2540 | audit_close(m->audit_fd); | |
2541 | m->audit_fd = -1; | |
2542 | } | |
2543 | } | |
e537352b | 2544 | |
4927fcae LP |
2545 | free(p); |
2546 | #endif | |
e537352b | 2547 | |
e537352b LP |
2548 | } |
2549 | ||
e983b760 LP |
2550 | void manager_send_unit_plymouth(Manager *m, Unit *u) { |
2551 | int fd = -1; | |
2552 | union sockaddr_union sa; | |
2553 | int n = 0; | |
2554 | char *message = NULL; | |
e983b760 LP |
2555 | |
2556 | /* Don't generate plymouth events if the service was already | |
2557 | * started and we're just deserializing */ | |
a7556052 | 2558 | if (m->n_reloading > 0) |
e983b760 LP |
2559 | return; |
2560 | ||
2561 | if (m->running_as != MANAGER_SYSTEM) | |
2562 | return; | |
2563 | ||
2564 | if (u->meta.type != UNIT_SERVICE && | |
2565 | u->meta.type != UNIT_MOUNT && | |
2566 | u->meta.type != UNIT_SWAP) | |
2567 | return; | |
2568 | ||
2569 | /* We set SOCK_NONBLOCK here so that we rather drop the | |
2570 | * message then wait for plymouth */ | |
2571 | if ((fd = socket(AF_UNIX, SOCK_STREAM|SOCK_CLOEXEC|SOCK_NONBLOCK, 0)) < 0) { | |
2572 | log_error("socket() failed: %m"); | |
2573 | return; | |
2574 | } | |
2575 | ||
2576 | zero(sa); | |
2577 | sa.sa.sa_family = AF_UNIX; | |
96707269 LP |
2578 | strncpy(sa.un.sun_path+1, "/org/freedesktop/plymouthd", sizeof(sa.un.sun_path)-1); |
2579 | if (connect(fd, &sa.sa, offsetof(struct sockaddr_un, sun_path) + 1 + strlen(sa.un.sun_path+1)) < 0) { | |
e983b760 LP |
2580 | |
2581 | if (errno != EPIPE && | |
2582 | errno != EAGAIN && | |
2583 | errno != ENOENT && | |
2584 | errno != ECONNREFUSED && | |
2585 | errno != ECONNRESET && | |
2586 | errno != ECONNABORTED) | |
2587 | log_error("connect() failed: %m"); | |
2588 | ||
2589 | goto finish; | |
2590 | } | |
2591 | ||
2592 | if (asprintf(&message, "U\002%c%s%n", (int) (strlen(u->meta.id) + 1), u->meta.id, &n) < 0) { | |
2593 | log_error("Out of memory"); | |
2594 | goto finish; | |
2595 | } | |
2596 | ||
2597 | errno = 0; | |
bd40a2d8 | 2598 | if (write(fd, message, n + 1) != n + 1) { |
e983b760 LP |
2599 | |
2600 | if (errno != EPIPE && | |
2601 | errno != EAGAIN && | |
2602 | errno != ENOENT && | |
2603 | errno != ECONNREFUSED && | |
2604 | errno != ECONNRESET && | |
2605 | errno != ECONNABORTED) | |
2606 | log_error("Failed to write Plymouth message: %m"); | |
2607 | ||
2608 | goto finish; | |
2609 | } | |
2610 | ||
2611 | finish: | |
2612 | if (fd >= 0) | |
2613 | close_nointr_nofail(fd); | |
2614 | ||
2615 | free(message); | |
2616 | } | |
2617 | ||
05e343b7 LP |
2618 | void manager_dispatch_bus_name_owner_changed( |
2619 | Manager *m, | |
2620 | const char *name, | |
2621 | const char* old_owner, | |
2622 | const char *new_owner) { | |
2623 | ||
2624 | Unit *u; | |
2625 | ||
2626 | assert(m); | |
2627 | assert(name); | |
2628 | ||
2629 | if (!(u = hashmap_get(m->watch_bus, name))) | |
2630 | return; | |
2631 | ||
2632 | UNIT_VTABLE(u)->bus_name_owner_change(u, name, old_owner, new_owner); | |
2633 | } | |
2634 | ||
2635 | void manager_dispatch_bus_query_pid_done( | |
2636 | Manager *m, | |
2637 | const char *name, | |
2638 | pid_t pid) { | |
2639 | ||
2640 | Unit *u; | |
2641 | ||
2642 | assert(m); | |
2643 | assert(name); | |
2644 | assert(pid >= 1); | |
2645 | ||
2646 | if (!(u = hashmap_get(m->watch_bus, name))) | |
2647 | return; | |
2648 | ||
2649 | UNIT_VTABLE(u)->bus_query_pid_done(u, name, pid); | |
2650 | } | |
2651 | ||
d8d5ab98 | 2652 | int manager_open_serialization(Manager *m, FILE **_f) { |
b925e726 | 2653 | char *path = NULL; |
a16e1123 LP |
2654 | mode_t saved_umask; |
2655 | int fd; | |
2656 | FILE *f; | |
2657 | ||
2658 | assert(_f); | |
2659 | ||
b925e726 | 2660 | if (m->running_as == MANAGER_SYSTEM) |
2b583ce6 | 2661 | asprintf(&path, "/run/systemd/dump-%lu-XXXXXX", (unsigned long) getpid()); |
b925e726 LP |
2662 | else |
2663 | asprintf(&path, "/tmp/systemd-dump-%lu-XXXXXX", (unsigned long) getpid()); | |
d8d5ab98 | 2664 | |
b925e726 LP |
2665 | if (!path) |
2666 | return -ENOMEM; | |
a16e1123 LP |
2667 | |
2668 | saved_umask = umask(0077); | |
2669 | fd = mkostemp(path, O_RDWR|O_CLOEXEC); | |
2670 | umask(saved_umask); | |
2671 | ||
2672 | if (fd < 0) { | |
2673 | free(path); | |
2674 | return -errno; | |
2675 | } | |
2676 | ||
2677 | unlink(path); | |
2678 | ||
2679 | log_debug("Serializing state to %s", path); | |
2680 | free(path); | |
2681 | ||
da19d5c1 | 2682 | if (!(f = fdopen(fd, "w+"))) |
a16e1123 LP |
2683 | return -errno; |
2684 | ||
2685 | *_f = f; | |
2686 | ||
2687 | return 0; | |
2688 | } | |
2689 | ||
2690 | int manager_serialize(Manager *m, FILE *f, FDSet *fds) { | |
2691 | Iterator i; | |
2692 | Unit *u; | |
2693 | const char *t; | |
2694 | int r; | |
2695 | ||
2696 | assert(m); | |
2697 | assert(f); | |
2698 | assert(fds); | |
2699 | ||
a7556052 | 2700 | m->n_reloading ++; |
38c52d46 | 2701 | |
01d67b43 LP |
2702 | fprintf(f, "current-job-id=%i\n", m->current_job_id); |
2703 | fprintf(f, "taint-usr=%s\n", yes_no(m->taint_usr)); | |
2704 | ||
e9ddabc2 | 2705 | dual_timestamp_serialize(f, "initrd-timestamp", &m->initrd_timestamp); |
10717a1a LP |
2706 | dual_timestamp_serialize(f, "startup-timestamp", &m->startup_timestamp); |
2707 | dual_timestamp_serialize(f, "finish-timestamp", &m->finish_timestamp); | |
47a483a1 | 2708 | |
f2382a94 LP |
2709 | fputc('\n', f); |
2710 | ||
a16e1123 LP |
2711 | HASHMAP_FOREACH_KEY(u, t, m->units, i) { |
2712 | if (u->meta.id != t) | |
2713 | continue; | |
2714 | ||
2715 | if (!unit_can_serialize(u)) | |
2716 | continue; | |
2717 | ||
2718 | /* Start marker */ | |
2719 | fputs(u->meta.id, f); | |
2720 | fputc('\n', f); | |
2721 | ||
38c52d46 | 2722 | if ((r = unit_serialize(u, f, fds)) < 0) { |
a7556052 | 2723 | m->n_reloading --; |
a16e1123 | 2724 | return r; |
38c52d46 | 2725 | } |
a16e1123 LP |
2726 | } |
2727 | ||
a7556052 LP |
2728 | assert(m->n_reloading > 0); |
2729 | m->n_reloading --; | |
38c52d46 | 2730 | |
a16e1123 LP |
2731 | if (ferror(f)) |
2732 | return -EIO; | |
2733 | ||
b23de6af LP |
2734 | r = bus_fdset_add_all(m, fds); |
2735 | if (r < 0) | |
2736 | return r; | |
2737 | ||
a16e1123 LP |
2738 | return 0; |
2739 | } | |
2740 | ||
2741 | int manager_deserialize(Manager *m, FILE *f, FDSet *fds) { | |
2742 | int r = 0; | |
2743 | ||
2744 | assert(m); | |
2745 | assert(f); | |
2746 | ||
2747 | log_debug("Deserializing state..."); | |
2748 | ||
a7556052 | 2749 | m->n_reloading ++; |
82c64bf5 | 2750 | |
10f8e83c | 2751 | for (;;) { |
20c03b7b | 2752 | char line[LINE_MAX], *l; |
10f8e83c LP |
2753 | |
2754 | if (!fgets(line, sizeof(line), f)) { | |
2755 | if (feof(f)) | |
2756 | r = 0; | |
2757 | else | |
2758 | r = -errno; | |
2759 | ||
2760 | goto finish; | |
2761 | } | |
2762 | ||
2763 | char_array_0(line); | |
2764 | l = strstrip(line); | |
2765 | ||
2766 | if (l[0] == 0) | |
2767 | break; | |
2768 | ||
01d67b43 LP |
2769 | if (startswith(l, "current-job-id=")) { |
2770 | uint32_t id; | |
2771 | ||
2772 | if (safe_atou32(l+15, &id) < 0) | |
2773 | log_debug("Failed to parse current job id value %s", l+15); | |
2774 | else | |
2775 | m->current_job_id = MAX(m->current_job_id, id); | |
2776 | } else if (startswith(l, "taint-usr=")) { | |
2777 | int b; | |
2778 | ||
2779 | if ((b = parse_boolean(l+10)) < 0) | |
2780 | log_debug("Failed to parse taint /usr flag %s", l+10); | |
2781 | else | |
2782 | m->taint_usr = m->taint_usr || b; | |
2783 | } else if (startswith(l, "initrd-timestamp=")) | |
e9ddabc2 LP |
2784 | dual_timestamp_deserialize(l+17, &m->initrd_timestamp); |
2785 | else if (startswith(l, "startup-timestamp=")) | |
799fd0fd | 2786 | dual_timestamp_deserialize(l+18, &m->startup_timestamp); |
10717a1a | 2787 | else if (startswith(l, "finish-timestamp=")) |
799fd0fd | 2788 | dual_timestamp_deserialize(l+17, &m->finish_timestamp); |
10717a1a | 2789 | else |
10f8e83c LP |
2790 | log_debug("Unknown serialization item '%s'", l); |
2791 | } | |
2792 | ||
a16e1123 LP |
2793 | for (;;) { |
2794 | Unit *u; | |
2795 | char name[UNIT_NAME_MAX+2]; | |
2796 | ||
2797 | /* Start marker */ | |
2798 | if (!fgets(name, sizeof(name), f)) { | |
2799 | if (feof(f)) | |
10f8e83c LP |
2800 | r = 0; |
2801 | else | |
2802 | r = -errno; | |
a16e1123 | 2803 | |
82c64bf5 | 2804 | goto finish; |
a16e1123 LP |
2805 | } |
2806 | ||
2807 | char_array_0(name); | |
2808 | ||
398ef8ba | 2809 | if ((r = manager_load_unit(m, strstrip(name), NULL, NULL, &u)) < 0) |
82c64bf5 | 2810 | goto finish; |
a16e1123 LP |
2811 | |
2812 | if ((r = unit_deserialize(u, f, fds)) < 0) | |
82c64bf5 | 2813 | goto finish; |
a16e1123 LP |
2814 | } |
2815 | ||
10f8e83c | 2816 | finish: |
82c64bf5 LP |
2817 | if (ferror(f)) { |
2818 | r = -EIO; | |
2819 | goto finish; | |
2820 | } | |
a16e1123 | 2821 | |
a7556052 LP |
2822 | assert(m->n_reloading > 0); |
2823 | m->n_reloading --; | |
82c64bf5 LP |
2824 | |
2825 | return r; | |
a16e1123 LP |
2826 | } |
2827 | ||
2828 | int manager_reload(Manager *m) { | |
2829 | int r, q; | |
2830 | FILE *f; | |
2831 | FDSet *fds; | |
2832 | ||
2833 | assert(m); | |
2834 | ||
d8d5ab98 | 2835 | if ((r = manager_open_serialization(m, &f)) < 0) |
a16e1123 LP |
2836 | return r; |
2837 | ||
a7556052 | 2838 | m->n_reloading ++; |
38c52d46 | 2839 | |
a16e1123 | 2840 | if (!(fds = fdset_new())) { |
a7556052 | 2841 | m->n_reloading --; |
a16e1123 LP |
2842 | r = -ENOMEM; |
2843 | goto finish; | |
2844 | } | |
2845 | ||
38c52d46 | 2846 | if ((r = manager_serialize(m, f, fds)) < 0) { |
a7556052 | 2847 | m->n_reloading --; |
a16e1123 | 2848 | goto finish; |
38c52d46 | 2849 | } |
a16e1123 LP |
2850 | |
2851 | if (fseeko(f, 0, SEEK_SET) < 0) { | |
a7556052 | 2852 | m->n_reloading --; |
a16e1123 LP |
2853 | r = -errno; |
2854 | goto finish; | |
2855 | } | |
2856 | ||
2857 | /* From here on there is no way back. */ | |
2858 | manager_clear_jobs_and_units(m); | |
5a1e9937 | 2859 | manager_undo_generators(m); |
a16e1123 | 2860 | |
2ded0c04 | 2861 | /* Find new unit paths */ |
84e3543e | 2862 | lookup_paths_free(&m->lookup_paths); |
c800e483 | 2863 | if ((q = lookup_paths_init(&m->lookup_paths, m->running_as, true)) < 0) |
2ded0c04 LP |
2864 | r = q; |
2865 | ||
5a1e9937 LP |
2866 | manager_run_generators(m); |
2867 | ||
2868 | manager_build_unit_path_cache(m); | |
2869 | ||
a16e1123 LP |
2870 | /* First, enumerate what we can from all config files */ |
2871 | if ((q = manager_enumerate(m)) < 0) | |
2872 | r = q; | |
2873 | ||
2874 | /* Second, deserialize our stored data */ | |
2875 | if ((q = manager_deserialize(m, f, fds)) < 0) | |
2876 | r = q; | |
2877 | ||
2878 | fclose(f); | |
2879 | f = NULL; | |
2880 | ||
2881 | /* Third, fire things up! */ | |
2882 | if ((q = manager_coldplug(m)) < 0) | |
2883 | r = q; | |
2884 | ||
a7556052 LP |
2885 | assert(m->n_reloading > 0); |
2886 | m->n_reloading--; | |
9f611ad8 | 2887 | |
a16e1123 LP |
2888 | finish: |
2889 | if (f) | |
2890 | fclose(f); | |
2891 | ||
2892 | if (fds) | |
2893 | fdset_free(fds); | |
2894 | ||
2895 | return r; | |
2896 | } | |
2897 | ||
9e58ff9c LP |
2898 | bool manager_is_booting_or_shutting_down(Manager *m) { |
2899 | Unit *u; | |
2900 | ||
2901 | assert(m); | |
2902 | ||
2903 | /* Is the initial job still around? */ | |
2904 | if (manager_get_job(m, 1)) | |
2905 | return true; | |
2906 | ||
2907 | /* Is there a job for the shutdown target? */ | |
27d340c7 LP |
2908 | u = manager_get_unit(m, SPECIAL_SHUTDOWN_TARGET); |
2909 | if (u) | |
9e58ff9c LP |
2910 | return !!u->meta.job; |
2911 | ||
2912 | return false; | |
2913 | } | |
2914 | ||
fdf20a31 | 2915 | void manager_reset_failed(Manager *m) { |
5632e374 LP |
2916 | Unit *u; |
2917 | Iterator i; | |
2918 | ||
2919 | assert(m); | |
2920 | ||
2921 | HASHMAP_FOREACH(u, m->units, i) | |
fdf20a31 | 2922 | unit_reset_failed(u); |
5632e374 LP |
2923 | } |
2924 | ||
8f6df3fa LP |
2925 | bool manager_unit_pending_inactive(Manager *m, const char *name) { |
2926 | Unit *u; | |
2927 | ||
2928 | assert(m); | |
2929 | assert(name); | |
2930 | ||
2931 | /* Returns true if the unit is inactive or going down */ | |
8f6df3fa LP |
2932 | if (!(u = manager_get_unit(m, name))) |
2933 | return true; | |
2934 | ||
18ffdfda | 2935 | return unit_pending_inactive(u); |
8f6df3fa LP |
2936 | } |
2937 | ||
b0c918b9 | 2938 | void manager_check_finished(Manager *m) { |
e9ddabc2 | 2939 | char userspace[FORMAT_TIMESPAN_MAX], initrd[FORMAT_TIMESPAN_MAX], kernel[FORMAT_TIMESPAN_MAX], sum[FORMAT_TIMESPAN_MAX]; |
18fa6b27 | 2940 | usec_t kernel_usec = 0, initrd_usec = 0, userspace_usec = 0, total_usec = 0; |
b0c918b9 LP |
2941 | |
2942 | assert(m); | |
2943 | ||
2944 | if (dual_timestamp_is_set(&m->finish_timestamp)) | |
2945 | return; | |
2946 | ||
2947 | if (hashmap_size(m->jobs) > 0) | |
2948 | return; | |
2949 | ||
2950 | dual_timestamp_get(&m->finish_timestamp); | |
2951 | ||
e03ae661 LP |
2952 | if (m->running_as == MANAGER_SYSTEM && detect_container(NULL) <= 0) { |
2953 | ||
18fa6b27 LP |
2954 | userspace_usec = m->finish_timestamp.monotonic - m->startup_timestamp.monotonic; |
2955 | total_usec = m->finish_timestamp.monotonic; | |
2956 | ||
e9ddabc2 | 2957 | if (dual_timestamp_is_set(&m->initrd_timestamp)) { |
18fa6b27 LP |
2958 | |
2959 | kernel_usec = m->initrd_timestamp.monotonic; | |
2960 | initrd_usec = m->startup_timestamp.monotonic - m->initrd_timestamp.monotonic; | |
2961 | ||
e9ddabc2 | 2962 | log_info("Startup finished in %s (kernel) + %s (initrd) + %s (userspace) = %s.", |
18fa6b27 LP |
2963 | format_timespan(kernel, sizeof(kernel), kernel_usec), |
2964 | format_timespan(initrd, sizeof(initrd), initrd_usec), | |
2965 | format_timespan(userspace, sizeof(userspace), userspace_usec), | |
2966 | format_timespan(sum, sizeof(sum), total_usec)); | |
2967 | } else { | |
2968 | kernel_usec = m->startup_timestamp.monotonic; | |
2969 | initrd_usec = 0; | |
2970 | ||
e9ddabc2 | 2971 | log_info("Startup finished in %s (kernel) + %s (userspace) = %s.", |
18fa6b27 LP |
2972 | format_timespan(kernel, sizeof(kernel), kernel_usec), |
2973 | format_timespan(userspace, sizeof(userspace), userspace_usec), | |
2974 | format_timespan(sum, sizeof(sum), total_usec)); | |
2975 | } | |
2976 | } else { | |
2977 | userspace_usec = initrd_usec = kernel_usec = 0; | |
2978 | total_usec = m->finish_timestamp.monotonic - m->startup_timestamp.monotonic; | |
2979 | ||
b0c918b9 | 2980 | log_debug("Startup finished in %s.", |
18fa6b27 LP |
2981 | format_timespan(sum, sizeof(sum), total_usec)); |
2982 | } | |
b0c918b9 | 2983 | |
18fa6b27 | 2984 | bus_broadcast_finished(m, kernel_usec, initrd_usec, userspace_usec, total_usec); |
530345e7 LP |
2985 | |
2986 | sd_notifyf(false, | |
2987 | "READY=1\nSTATUS=Startup finished in %s.", | |
2988 | format_timespan(sum, sizeof(sum), total_usec)); | |
b0c918b9 LP |
2989 | } |
2990 | ||
5a1e9937 LP |
2991 | void manager_run_generators(Manager *m) { |
2992 | DIR *d = NULL; | |
5a1e9937 | 2993 | const char *generator_path; |
83cc030f | 2994 | const char *argv[3]; |
07f8a4aa | 2995 | mode_t u; |
5a1e9937 LP |
2996 | |
2997 | assert(m); | |
2998 | ||
af2d49f7 | 2999 | generator_path = m->running_as == MANAGER_SYSTEM ? SYSTEM_GENERATOR_PATH : USER_GENERATOR_PATH; |
5a1e9937 LP |
3000 | if (!(d = opendir(generator_path))) { |
3001 | ||
3002 | if (errno == ENOENT) | |
3003 | return; | |
3004 | ||
3005 | log_error("Failed to enumerate generator directory: %m"); | |
3006 | return; | |
3007 | } | |
3008 | ||
3009 | if (!m->generator_unit_path) { | |
f1d19aa4 LP |
3010 | const char *p; |
3011 | char user_path[] = "/tmp/systemd-generator-XXXXXX"; | |
5a1e9937 | 3012 | |
a08dab55 | 3013 | if (m->running_as == MANAGER_SYSTEM && getpid() == 1) { |
f1d19aa4 LP |
3014 | p = "/run/systemd/generator"; |
3015 | ||
3016 | if (mkdir_p(p, 0755) < 0) { | |
3017 | log_error("Failed to create generator directory: %m"); | |
3018 | goto finish; | |
3019 | } | |
3020 | ||
3021 | } else { | |
3022 | if (!(p = mkdtemp(user_path))) { | |
3023 | log_error("Failed to create generator directory: %m"); | |
3024 | goto finish; | |
3025 | } | |
5a1e9937 LP |
3026 | } |
3027 | ||
3028 | if (!(m->generator_unit_path = strdup(p))) { | |
3029 | log_error("Failed to allocate generator unit path."); | |
3030 | goto finish; | |
3031 | } | |
3032 | } | |
3033 | ||
83cc030f LP |
3034 | argv[0] = NULL; /* Leave this empty, execute_directory() will fill something in */ |
3035 | argv[1] = m->generator_unit_path; | |
3036 | argv[2] = NULL; | |
5a1e9937 | 3037 | |
07f8a4aa | 3038 | u = umask(0022); |
83cc030f | 3039 | execute_directory(generator_path, d, (char**) argv); |
07f8a4aa | 3040 | umask(u); |
5a1e9937 LP |
3041 | |
3042 | if (rmdir(m->generator_unit_path) >= 0) { | |
3043 | /* Uh? we were able to remove this dir? I guess that | |
3044 | * means the directory was empty, hence let's shortcut | |
3045 | * this */ | |
3046 | ||
3047 | free(m->generator_unit_path); | |
3048 | m->generator_unit_path = NULL; | |
3049 | goto finish; | |
3050 | } | |
3051 | ||
3052 | if (!strv_find(m->lookup_paths.unit_path, m->generator_unit_path)) { | |
3053 | char **l; | |
3054 | ||
3055 | if (!(l = strv_append(m->lookup_paths.unit_path, m->generator_unit_path))) { | |
3056 | log_error("Failed to add generator directory to unit search path: %m"); | |
3057 | goto finish; | |
3058 | } | |
3059 | ||
3060 | strv_free(m->lookup_paths.unit_path); | |
3061 | m->lookup_paths.unit_path = l; | |
7f4e0805 LP |
3062 | |
3063 | log_debug("Added generator unit path %s to search path.", m->generator_unit_path); | |
5a1e9937 LP |
3064 | } |
3065 | ||
3066 | finish: | |
3067 | if (d) | |
3068 | closedir(d); | |
5a1e9937 LP |
3069 | } |
3070 | ||
3071 | void manager_undo_generators(Manager *m) { | |
3072 | assert(m); | |
3073 | ||
3074 | if (!m->generator_unit_path) | |
3075 | return; | |
3076 | ||
3077 | strv_remove(m->lookup_paths.unit_path, m->generator_unit_path); | |
ad293f5a | 3078 | rm_rf(m->generator_unit_path, false, true, false); |
5a1e9937 LP |
3079 | |
3080 | free(m->generator_unit_path); | |
3081 | m->generator_unit_path = NULL; | |
3082 | } | |
3083 | ||
06d4c99a LP |
3084 | int manager_set_default_controllers(Manager *m, char **controllers) { |
3085 | char **l; | |
3086 | ||
3087 | assert(m); | |
3088 | ||
3089 | if (!(l = strv_copy(controllers))) | |
3090 | return -ENOMEM; | |
3091 | ||
3092 | strv_free(m->default_controllers); | |
3093 | m->default_controllers = l; | |
3094 | ||
3095 | return 0; | |
3096 | } | |
3097 | ||
f1dd0c3f LP |
3098 | void manager_recheck_syslog(Manager *m) { |
3099 | Unit *u; | |
3100 | ||
3101 | assert(m); | |
3102 | ||
3103 | if (m->running_as != MANAGER_SYSTEM) | |
3104 | return; | |
3105 | ||
3106 | if ((u = manager_get_unit(m, SPECIAL_SYSLOG_SOCKET))) { | |
3107 | SocketState state; | |
3108 | ||
3109 | state = SOCKET(u)->state; | |
3110 | ||
3111 | if (state != SOCKET_DEAD && | |
3112 | state != SOCKET_FAILED && | |
3113 | state != SOCKET_RUNNING) { | |
3114 | ||
3115 | /* Hmm, the socket is not set up, or is still | |
3116 | * listening, let's better not try to use | |
3117 | * it. Note that we have no problem if the | |
3118 | * socket is completely down, since there | |
3119 | * might be a foreign /dev/log socket around | |
3120 | * and we want to make use of that. | |
3121 | */ | |
3122 | ||
3123 | log_close_syslog(); | |
3124 | return; | |
3125 | } | |
3126 | } | |
3127 | ||
3128 | if ((u = manager_get_unit(m, SPECIAL_SYSLOG_TARGET))) | |
3129 | if (TARGET(u)->state != TARGET_ACTIVE) { | |
3130 | log_close_syslog(); | |
3131 | return; | |
3132 | } | |
3133 | ||
3134 | /* Hmm, OK, so the socket is either fully up, or fully down, | |
3135 | * and the target is up, then let's make use of the socket */ | |
3136 | log_open(); | |
3137 | } | |
3138 | ||
27d340c7 LP |
3139 | void manager_set_show_status(Manager *m, bool b) { |
3140 | assert(m); | |
3141 | ||
3142 | if (m->running_as != MANAGER_SYSTEM) | |
3143 | return; | |
3144 | ||
3145 | m->show_status = b; | |
3146 | ||
3147 | if (b) | |
3148 | touch("/run/systemd/show-status"); | |
3149 | else | |
3150 | unlink("/run/systemd/show-status"); | |
3151 | } | |
3152 | ||
3153 | bool manager_get_show_status(Manager *m) { | |
3154 | assert(m); | |
3155 | ||
3156 | if (m->running_as != MANAGER_SYSTEM) | |
3157 | return false; | |
3158 | ||
3159 | if (m->show_status) | |
3160 | return true; | |
3161 | ||
3162 | /* If Plymouth is running make sure we show the status, so | |
3163 | * that there's something nice to see when people press Esc */ | |
3164 | ||
3165 | return plymouth_running(); | |
3166 | } | |
3167 | ||
dfcd764e | 3168 | static const char* const manager_running_as_table[_MANAGER_RUNNING_AS_MAX] = { |
dfcd764e | 3169 | [MANAGER_SYSTEM] = "system", |
af2d49f7 | 3170 | [MANAGER_USER] = "user" |
dfcd764e LP |
3171 | }; |
3172 | ||
3173 | DEFINE_STRING_TABLE_LOOKUP(manager_running_as, ManagerRunningAs); |