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cgroup: kill processes, not tasks and other cgroup changes
[thirdparty/systemd.git] / src / systemctl.c
CommitLineData
7e4249b9
LP		 1/*-*- Mode: C; c-basic-offset: 8 -*-*/
2
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
e4b61340 22#include <sys/reboot.h>
7e4249b9
LP		 23#include <stdio.h>
24#include <getopt.h>
25#include <stdbool.h>
26#include <string.h>
27#include <errno.h>
28#include <sys/ioctl.h>
29#include <termios.h>
30#include <unistd.h>
eb22ac37 31#include <fcntl.h>
f1c5860b 32#include <sys/socket.h>
7e4249b9
LP		 33
34#include <dbus/dbus.h>
35
36#include "log.h"
37#include "util.h"
38#include "macro.h"
39#include "set.h"
e4b61340 40#include "utmp-wtmp.h"
514f4ef5 41#include "special.h"
eb22ac37 42#include "initreq.h"
e4a9373f 43#include "strv.h"
9a1ac7b9 44#include "dbus-common.h"
ab35fb1b 45#include "cgroup-show.h"
c6c18be3 46#include "cgroup-util.h"
582a507f 47#include "list.h"
7e4249b9
LP		 48
49static const char *arg_type = NULL;
48220598 50static const char *arg_property = NULL;
7e4249b9
LP		 51static bool arg_all = false;
52static bool arg_replace = false;
53static bool arg_session = false;
6e905d93 54static bool arg_no_block = false;
e4b61340
LP		 55static bool arg_immediate = false;
56static bool arg_no_wtmp = false;
57static bool arg_no_sync = false;
514f4ef5 58static bool arg_no_wall = false;
e4b61340 59static bool arg_dry = false;
0183528f 60static bool arg_quiet = false;
e4b61340
LP		 61static char **arg_wall = NULL;
62enum action {
63 ACTION_INVALID,
64 ACTION_SYSTEMCTL,
65 ACTION_HALT,
66 ACTION_POWEROFF,
67 ACTION_REBOOT,
e4b61340
LP		 68 ACTION_RUNLEVEL2,
69 ACTION_RUNLEVEL3,
70 ACTION_RUNLEVEL4,
71 ACTION_RUNLEVEL5,
72 ACTION_RESCUE,
514f4ef5
LP		 73 ACTION_EMERGENCY,
74 ACTION_DEFAULT,
e4b61340
LP		 75 ACTION_RELOAD,
76 ACTION_REEXEC,
77 ACTION_RUNLEVEL,
78 _ACTION_MAX
79} arg_action = ACTION_SYSTEMCTL;
80
f4579ce7
LP		 81static bool private_bus = false;
82
e4b61340
LP		 83static bool error_is_no_service(DBusError *error) {
84
514f4ef5
LP		 85 assert(error);
86
e4b61340
LP		 87 if (!dbus_error_is_set(error))
88 return false;
89
90 if (dbus_error_has_name(error, DBUS_ERROR_NAME_HAS_NO_OWNER))
91 return true;
92
93 if (dbus_error_has_name(error, DBUS_ERROR_SERVICE_UNKNOWN))
94 return true;
95
96 return startswith(error->name, "org.freedesktop.DBus.Error.Spawn.");
97}
7e4249b9
LP		 98
99static int bus_iter_get_basic_and_next(DBusMessageIter *iter, int type, void *data, bool next) {
100
514f4ef5
LP		 101 assert(iter);
102 assert(data);
103
7e4249b9
LP		 104 if (dbus_message_iter_get_arg_type(iter) != type)
105 return -EIO;
106
107 dbus_message_iter_get_basic(iter, data);
108
109 if (!dbus_message_iter_next(iter) != !next)
110 return -EIO;
111
112 return 0;
113}
114
514f4ef5 115static void warn_wall(enum action action) {
ef2f1067 116 static const char *table[_ACTION_MAX] = {
514f4ef5
LP		 117 [ACTION_HALT] = "The system is going down for system halt NOW!",
118 [ACTION_REBOOT] = "The system is going down for reboot NOW!",
119 [ACTION_POWEROFF] = "The system is going down for power-off NOW!",
120 [ACTION_RESCUE] = "The system is going down to rescue mode NOW!",
121 [ACTION_EMERGENCY] = "The system is going down to emergency mode NOW!"
ef2f1067
LP		 122 };
123
514f4ef5
LP		 124 if (arg_no_wall)
125 return;
126
e4a9373f
LP		 127 if (arg_wall) {
128 char *p;
129
130 if (!(p = strv_join(arg_wall, " "))) {
131 log_error("Failed to join strings.");
132 return;
133 }
134
135 if (*p) {
136 utmp_wall(p);
137 free(p);
138 return;
139 }
140
141 free(p);
142 }
143
514f4ef5 144 if (!table[action])
ef2f1067
LP		 145 return;
146
514f4ef5 147 utmp_wall(table[action]);
ef2f1067
LP		 148}
149
7e4249b9
LP		 150static int list_units(DBusConnection *bus, char **args, unsigned n) {
151 DBusMessage *m = NULL, *reply = NULL;
152 DBusError error;
153 int r;
154 DBusMessageIter iter, sub, sub2;
155 unsigned k = 0;
156
157 dbus_error_init(&error);
158
514f4ef5
LP		 159 assert(bus);
160
7e4249b9
LP		 161 if (!(m = dbus_message_new_method_call(
162 "org.freedesktop.systemd1",
163 "/org/freedesktop/systemd1",
164 "org.freedesktop.systemd1.Manager",
165 "ListUnits"))) {
166 log_error("Could not allocate message.");
167 return -ENOMEM;
168 }
169
170 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
171 log_error("Failed to issue method call: %s", error.message);
172 r = -EIO;
173 goto finish;
174 }
175
176 if (!dbus_message_iter_init(reply, &iter) ||
177 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
178 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
179 log_error("Failed to parse reply.");
180 r = -EIO;
181 goto finish;
182 }
183
184 dbus_message_iter_recurse(&iter, &sub);
185
186 printf("%-45s %-6s %-12s %-12s %-15s %s\n", "UNIT", "LOAD", "ACTIVE", "SUB", "JOB", "DESCRIPTION");
187
188 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
189 const char *id, *description, *load_state, *active_state, *sub_state, *unit_state, *job_type, *job_path, *dot;
190 uint32_t job_id;
191
192 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
193 log_error("Failed to parse reply.");
194 r = -EIO;
195 goto finish;
196 }
197
198 dbus_message_iter_recurse(&sub, &sub2);
199
200 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &id, true) < 0 ||
201 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &description, true) < 0 ||
202 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &load_state, true) < 0 ||
203 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &active_state, true) < 0 ||
204 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &sub_state, true) < 0 ||
205 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &unit_state, true) < 0 ||
206 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &job_id, true) < 0 ||
207 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &job_type, true) < 0 ||
208 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &job_path, false) < 0) {
209 log_error("Failed to parse reply.");
210 r = -EIO;
211 goto finish;
212 }
213
214 if ((!arg_type || ((dot = strrchr(id, '.')) &&
215 streq(dot+1, arg_type))) &&
216 (arg_all || !streq(active_state, "inactive"))) {
217
218 int a = 0, b = 0;
219
e0376b17
LP		 220 if (streq(active_state, "maintenance"))
221 fputs(ANSI_HIGHLIGHT_ON, stdout);
222
7e4249b9
LP		 223 printf("%-45s %-6s %-12s %-12s%n", id, load_state, active_state, sub_state, &a);
224
225 if (job_id != 0)
226 printf(" %-15s%n", job_type, &b);
227 else
e0376b17 228 b = 1 + 15;
7e4249b9
LP		 229
230 if (a + b + 2 < columns()) {
231 if (job_id == 0)
232 printf(" ");
233
e0376b17 234 printf(" %.*s", columns() - a - b - 2, description);
7e4249b9
LP		 235 }
236
e0376b17
LP		 237 if (streq(active_state, "maintenance"))
238 fputs(ANSI_HIGHLIGHT_OFF, stdout);
239
7e4249b9
LP		 240 fputs("\n", stdout);
241 k++;
242 }
243
244 dbus_message_iter_next(&sub);
245 }
246
247 if (arg_all)
248 printf("\n%u units listed.\n", k);
249 else
250 printf("\n%u live units listed. Pass --all to see dead units, too.\n", k);
251
252 r = 0;
253
254finish:
255 if (m)
256 dbus_message_unref(m);
257
258 if (reply)
259 dbus_message_unref(reply);
260
261 dbus_error_free(&error);
262
263 return r;
264}
265
266static int list_jobs(DBusConnection *bus, char **args, unsigned n) {
267 DBusMessage *m = NULL, *reply = NULL;
268 DBusError error;
269 int r;
270 DBusMessageIter iter, sub, sub2;
271 unsigned k = 0;
272
273 dbus_error_init(&error);
274
514f4ef5
LP		 275 assert(bus);
276
7e4249b9
LP		 277 if (!(m = dbus_message_new_method_call(
278 "org.freedesktop.systemd1",
279 "/org/freedesktop/systemd1",
280 "org.freedesktop.systemd1.Manager",
281 "ListJobs"))) {
282 log_error("Could not allocate message.");
283 return -ENOMEM;
284 }
285
286 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
287 log_error("Failed to issue method call: %s", error.message);
288 r = -EIO;
289 goto finish;
290 }
291
292 if (!dbus_message_iter_init(reply, &iter) ||
293 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
294 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
295 log_error("Failed to parse reply.");
296 r = -EIO;
297 goto finish;
298 }
299
300 dbus_message_iter_recurse(&iter, &sub);
301
302 printf("%4s %-45s %-17s %-7s\n", "JOB", "UNIT", "TYPE", "STATE");
303
304 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
305 const char *name, *type, *state, *job_path, *unit_path;
306 uint32_t id;
307
308 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
309 log_error("Failed to parse reply.");
310 r = -EIO;
311 goto finish;
312 }
313
314 dbus_message_iter_recurse(&sub, &sub2);
315
316 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &id, true) < 0 ||
317 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0 ||
318 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) < 0 ||
319 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &state, true) < 0 ||
320 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &job_path, true) < 0 ||
321 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &unit_path, false) < 0) {
322 log_error("Failed to parse reply.");
323 r = -EIO;
324 goto finish;
325 }
326
327 printf("%4u %-45s %-17s %-7s\n", id, name, type, state);
328 k++;
329
330 dbus_message_iter_next(&sub);
331 }
332
333 printf("\n%u jobs listed.\n", k);
334 r = 0;
335
336finish:
337 if (m)
338 dbus_message_unref(m);
339
340 if (reply)
341 dbus_message_unref(reply);
342
343 dbus_error_free(&error);
344
345 return r;
346}
347
348static int load_unit(DBusConnection *bus, char **args, unsigned n) {
349 DBusMessage *m = NULL, *reply = NULL;
350 DBusError error;
351 int r;
352 unsigned i;
353
354 dbus_error_init(&error);
355
514f4ef5
LP		 356 assert(bus);
357 assert(args);
358
7e4249b9
LP		 359 for (i = 1; i < n; i++) {
360
361 if (!(m = dbus_message_new_method_call(
362 "org.freedesktop.systemd1",
363 "/org/freedesktop/systemd1",
364 "org.freedesktop.systemd1.Manager",
365 "LoadUnit"))) {
366 log_error("Could not allocate message.");
367 r = -ENOMEM;
368 goto finish;
369 }
370
371 if (!dbus_message_append_args(m,
372 DBUS_TYPE_STRING, &args[i],
373 DBUS_TYPE_INVALID)) {
374 log_error("Could not append arguments to message.");
375 r = -ENOMEM;
376 goto finish;
377 }
378
379 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
380 log_error("Failed to issue method call: %s", error.message);
381 r = -EIO;
382 goto finish;
383 }
384
385 dbus_message_unref(m);
386 dbus_message_unref(reply);
387
388 m = reply = NULL;
389 }
390
391 r = 0;
392
393finish:
394 if (m)
395 dbus_message_unref(m);
396
397 if (reply)
398 dbus_message_unref(reply);
399
400 dbus_error_free(&error);
401
402 return r;
403}
404
405static int cancel_job(DBusConnection *bus, char **args, unsigned n) {
406 DBusMessage *m = NULL, *reply = NULL;
407 DBusError error;
408 int r;
409 unsigned i;
410
411 dbus_error_init(&error);
412
514f4ef5
LP		 413 assert(bus);
414 assert(args);
415
7e4249b9
LP		 416 for (i = 1; i < n; i++) {
417 unsigned id;
418 const char *path;
419
420 if (!(m = dbus_message_new_method_call(
421 "org.freedesktop.systemd1",
422 "/org/freedesktop/systemd1",
423 "org.freedesktop.systemd1.Manager",
424 "GetJob"))) {
425 log_error("Could not allocate message.");
426 r = -ENOMEM;
427 goto finish;
428 }
429
430 if ((r = safe_atou(args[i], &id)) < 0) {
431 log_error("Failed to parse job id: %s", strerror(-r));
432 goto finish;
433 }
434
435 assert_cc(sizeof(uint32_t) == sizeof(id));
436 if (!dbus_message_append_args(m,
437 DBUS_TYPE_UINT32, &id,
438 DBUS_TYPE_INVALID)) {
439 log_error("Could not append arguments to message.");
440 r = -ENOMEM;
441 goto finish;
442 }
443
444 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
445 log_error("Failed to issue method call: %s", error.message);
446 r = -EIO;
447 goto finish;
448 }
449
450 if (!dbus_message_get_args(reply, &error,
451 DBUS_TYPE_OBJECT_PATH, &path,
452 DBUS_TYPE_INVALID)) {
453 log_error("Failed to parse reply: %s", error.message);
454 r = -EIO;
455 goto finish;
456 }
457
458 dbus_message_unref(m);
459 if (!(m = dbus_message_new_method_call(
460 "org.freedesktop.systemd1",
461 path,
462 "org.freedesktop.systemd1.Job",
463 "Cancel"))) {
464 log_error("Could not allocate message.");
465 r = -ENOMEM;
466 goto finish;
467 }
468
469 dbus_message_unref(reply);
470 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
471 log_error("Failed to issue method call: %s", error.message);
472 r = -EIO;
473 goto finish;
474 }
475
476 dbus_message_unref(m);
477 dbus_message_unref(reply);
478 m = reply = NULL;
479 }
480
481 r = 0;
482
483finish:
484 if (m)
485 dbus_message_unref(m);
486
487 if (reply)
488 dbus_message_unref(reply);
489
490 dbus_error_free(&error);
491
492 return r;
493}
494
5e374895
LP		 495typedef struct WaitData {
496 Set *set;
497 bool failed;
498} WaitData;
499
7e4249b9
LP		 500static DBusHandlerResult wait_filter(DBusConnection *connection, DBusMessage *message, void *data) {
501 DBusError error;
5e374895 502 WaitData *d = data;
7e4249b9
LP		 503
504 assert(connection);
505 assert(message);
5e374895 506 assert(d);
7e4249b9
LP		 507
508 dbus_error_init(&error);
509
54165a39
LP		 510 log_debug("Got D-Bus request: %s.%s() on %s",
511 dbus_message_get_interface(message),
512 dbus_message_get_member(message),
513 dbus_message_get_path(message));
7e4249b9
LP		 514
515 if (dbus_message_is_signal(message, DBUS_INTERFACE_LOCAL, "Disconnected")) {
516 log_error("Warning! D-Bus connection terminated.");
517 dbus_connection_close(connection);
518
519 } else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "JobRemoved")) {
520 uint32_t id;
521 const char *path;
5e374895 522 dbus_bool_t success = true;
7e4249b9
LP		 523
524 if (!dbus_message_get_args(message, &error,
525 DBUS_TYPE_UINT32, &id,
526 DBUS_TYPE_OBJECT_PATH, &path,
5e374895 527 DBUS_TYPE_BOOLEAN, &success,
7e4249b9
LP		 528 DBUS_TYPE_INVALID))
529 log_error("Failed to parse message: %s", error.message);
530 else {
531 char *p;
532
5e374895 533 if ((p = set_remove(d->set, (char*) path)))
7e4249b9 534 free(p);
5e374895
LP		 535
536 if (!success)
537 d->failed = true;
7e4249b9
LP		 538 }
539 }
540
541 dbus_error_free(&error);
542 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
543}
544
479ef5d3 545static int enable_wait_for_jobs(DBusConnection *bus) {
7e4249b9 546 DBusError error;
7e4249b9
LP		 547
548 assert(bus);
7e4249b9 549
f4579ce7
LP		 550 if (private_bus)
551 return 0;
552
7e4249b9 553 dbus_error_init(&error);
7e4249b9
LP		 554 dbus_bus_add_match(bus,
555 "type='signal',"
556 "sender='org.freedesktop.systemd1',"
557 "interface='org.freedesktop.systemd1.Manager',"
558 "member='JobRemoved',"
559 "path='/org/freedesktop/systemd1'",
560 &error);
561
562 if (dbus_error_is_set(&error)) {
563 log_error("Failed to add match: %s", error.message);
a567261a
LP		 564 dbus_error_free(&error);
565 return -EIO;
7e4249b9
LP		 566 }
567
479ef5d3 568 /* This is slightly dirty, since we don't undo the match registrations. */
a567261a 569 return 0;
7e4249b9
LP		 570}
571
479ef5d3
LP		 572static int wait_for_jobs(DBusConnection *bus, Set *s) {
573 int r;
5e374895 574 WaitData d;
479ef5d3
LP		 575
576 assert(bus);
577 assert(s);
578
5e374895
LP		 579 zero(d);
580 d.set = s;
581 d.failed = false;
582
583 if (!dbus_connection_add_filter(bus, wait_filter, &d, NULL)) {
479ef5d3
LP		 584 log_error("Failed to add filter.");
585 r = -ENOMEM;
586 goto finish;
587 }
588
589 while (!set_isempty(s) &&
590 dbus_connection_read_write_dispatch(bus, -1))
591 ;
592
5e374895
LP		 593 if (!arg_quiet && d.failed)
594 log_error("Job failed, see logs for details.");
595
596 r = d.failed ? -EIO : 0;
479ef5d3
LP		 597
598finish:
599 /* This is slightly dirty, since we don't undo the filter registration. */
600
601 return r;
602}
603
e4b61340
LP		 604static int start_unit_one(
605 DBusConnection *bus,
606 const char *method,
607 const char *name,
608 const char *mode,
609 Set *s) {
7e4249b9 610
7e4249b9
LP		 611 DBusMessage *m = NULL, *reply = NULL;
612 DBusError error;
613 int r;
7e4249b9 614
e4b61340
LP		 615 assert(bus);
616 assert(method);
617 assert(name);
618 assert(mode);
6e905d93 619 assert(arg_no_block || s);
7e4249b9 620
e4b61340 621 dbus_error_init(&error);
479ef5d3 622
7e4249b9
LP		 623 if (!(m = dbus_message_new_method_call(
624 "org.freedesktop.systemd1",
625 "/org/freedesktop/systemd1",
626 "org.freedesktop.systemd1.Manager",
e4b61340 627 method))) {
7e4249b9
LP		 628 log_error("Could not allocate message.");
629 r = -ENOMEM;
630 goto finish;
631 }
632
633 if (!dbus_message_append_args(m,
e4b61340 634 DBUS_TYPE_STRING, &name,
7e4249b9
LP		 635 DBUS_TYPE_STRING, &mode,
636 DBUS_TYPE_INVALID)) {
637 log_error("Could not append arguments to message.");
638 r = -ENOMEM;
639 goto finish;
640 }
641
642 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
e4b61340
LP		 643
644 if (arg_action != ACTION_SYSTEMCTL && error_is_no_service(&error)) {
645 /* There's always a fallback possible for
646 * legacy actions. */
647 r = 0;
648 goto finish;
649 }
650
7e4249b9
LP		 651 log_error("Failed to issue method call: %s", error.message);
652 r = -EIO;
653 goto finish;
654 }
655
6e905d93 656 if (!arg_no_block) {
7e4249b9 657 const char *path;
e4b61340 658 char *p;
7e4249b9
LP		 659
660 if (!dbus_message_get_args(reply, &error,
661 DBUS_TYPE_OBJECT_PATH, &path,
662 DBUS_TYPE_INVALID)) {
663 log_error("Failed to parse reply: %s", error.message);
664 r = -EIO;
665 goto finish;
666 }
667
7e4249b9
LP		 668 if (!(p = strdup(path))) {
669 log_error("Failed to duplicate path.");
670 r = -ENOMEM;
671 goto finish;
672 }
673
674 if ((r = set_put(s, p)) < 0) {
e4b61340 675 free(p);
7e4249b9
LP		 676 log_error("Failed to add path to set.");
677 goto finish;
678 }
e4b61340 679 }
7e4249b9 680
e4b61340 681 r = 1;
7e4249b9
LP		 682
683finish:
7e4249b9
LP		 684 if (m)
685 dbus_message_unref(m);
686
687 if (reply)
688 dbus_message_unref(reply);
689
690 dbus_error_free(&error);
691
692 return r;
693}
694
514f4ef5
LP		 695static enum action verb_to_action(const char *verb) {
696 if (streq(verb, "halt"))
697 return ACTION_HALT;
698 else if (streq(verb, "poweroff"))
699 return ACTION_POWEROFF;
700 else if (streq(verb, "reboot"))
701 return ACTION_REBOOT;
702 else if (streq(verb, "rescue"))
703 return ACTION_RESCUE;
704 else if (streq(verb, "emergency"))
705 return ACTION_EMERGENCY;
706 else if (streq(verb, "default"))
707 return ACTION_DEFAULT;
708 else
709 return ACTION_INVALID;
710}
711
e4b61340
LP		 712static int start_unit(DBusConnection *bus, char **args, unsigned n) {
713
714 static const char * const table[_ACTION_MAX] = {
514f4ef5
LP		 715 [ACTION_HALT] = SPECIAL_HALT_TARGET,
716 [ACTION_POWEROFF] = SPECIAL_POWEROFF_TARGET,
717 [ACTION_REBOOT] = SPECIAL_REBOOT_TARGET,
718 [ACTION_RUNLEVEL2] = SPECIAL_RUNLEVEL2_TARGET,
719 [ACTION_RUNLEVEL3] = SPECIAL_RUNLEVEL3_TARGET,
720 [ACTION_RUNLEVEL4] = SPECIAL_RUNLEVEL4_TARGET,
721 [ACTION_RUNLEVEL5] = SPECIAL_RUNLEVEL5_TARGET,
722 [ACTION_RESCUE] = SPECIAL_RESCUE_TARGET,
723 [ACTION_EMERGENCY] = SPECIAL_EMERGENCY_SERVICE,
724 [ACTION_DEFAULT] = SPECIAL_DEFAULT_TARGET
e4b61340
LP		 725 };
726
727 int r;
728 unsigned i;
514f4ef5 729 const char *method, *mode, *one_name;
e4b61340
LP		 730 Set *s = NULL;
731
514f4ef5
LP		 732 assert(bus);
733
e4b61340
LP		 734 if (arg_action == ACTION_SYSTEMCTL) {
735 method =
e4b61340
LP		 736 streq(args[0], "stop") ? "StopUnit" :
737 streq(args[0], "reload") ? "ReloadUnit" :
738 streq(args[0], "restart") ? "RestartUnit" :
514f4ef5 739 "StartUnit";
e4b61340
LP		 740
741 mode =
514f4ef5
LP		 742 (streq(args[0], "isolate") ||
743 streq(args[0], "rescue") ||
744 streq(args[0], "emergency")) ? "isolate" :
745 arg_replace ? "replace" :
746 "fail";
e4b61340 747
514f4ef5 748 one_name = table[verb_to_action(args[0])];
e4b61340 749
e4b61340
LP		 750 } else {
751 assert(arg_action < ELEMENTSOF(table));
752 assert(table[arg_action]);
753
754 method = "StartUnit";
514f4ef5
LP		 755
756 mode = (arg_action == ACTION_EMERGENCY ||
757 arg_action == ACTION_RESCUE) ? "isolate" : "replace";
758
759 one_name = table[arg_action];
760 }
761
6e905d93 762 if (!arg_no_block) {
514f4ef5
LP		 763 if ((r = enable_wait_for_jobs(bus)) < 0) {
764 log_error("Could not watch jobs: %s", strerror(-r));
765 goto finish;
766 }
767
768 if (!(s = set_new(string_hash_func, string_compare_func))) {
769 log_error("Failed to allocate set.");
770 r = -ENOMEM;
771 goto finish;
772 }
e4b61340
LP		 773 }
774
775 r = 0;
776
514f4ef5
LP		 777 if (one_name) {
778 if ((r = start_unit_one(bus, method, one_name, mode, s)) <= 0)
779 goto finish;
780 } else {
e4b61340
LP		 781 for (i = 1; i < n; i++)
782 if ((r = start_unit_one(bus, method, args[i], mode, s)) < 0)
783 goto finish;
e4b61340
LP		 784 }
785
6e905d93 786 if (!arg_no_block)
514f4ef5
LP		 787 r = wait_for_jobs(bus, s);
788
e4b61340
LP		 789finish:
790 if (s)
791 set_free_free(s);
792
793 return r;
794}
795
514f4ef5
LP		 796static int start_special(DBusConnection *bus, char **args, unsigned n) {
797 assert(bus);
798 assert(args);
799
800 warn_wall(verb_to_action(args[0]));
801
802 return start_unit(bus, args, n);
803}
804
0183528f
LP		 805static int check_unit(DBusConnection *bus, char **args, unsigned n) {
806 DBusMessage *m = NULL, *reply = NULL;
807 const char
808 *interface = "org.freedesktop.systemd1.Unit",
809 *property = "ActiveState";
810 int r = -EADDRNOTAVAIL;
811 DBusError error;
812 unsigned i;
813
814 assert(bus);
815 assert(args);
816
817 dbus_error_init(&error);
818
819 for (i = 1; i < n; i++) {
820 const char *path = NULL;
821 const char *state;
822 DBusMessageIter iter, sub;
823
824 if (!(m = dbus_message_new_method_call(
825 "org.freedesktop.systemd1",
826 "/org/freedesktop/systemd1",
827 "org.freedesktop.systemd1.Manager",
828 "GetUnit"))) {
829 log_error("Could not allocate message.");
830 r = -ENOMEM;
831 goto finish;
832 }
833
834 if (!dbus_message_append_args(m,
835 DBUS_TYPE_STRING, &args[i],
836 DBUS_TYPE_INVALID)) {
837 log_error("Could not append arguments to message.");
838 r = -ENOMEM;
839 goto finish;
840 }
841
842 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
843
844 /* Hmm, cannot figure out anything about this unit... */
845 if (!arg_quiet)
846 puts("unknown");
847
ed2d7a44 848 dbus_error_free(&error);
0183528f
LP		 849 continue;
850 }
851
852 if (!dbus_message_get_args(reply, &error,
853 DBUS_TYPE_OBJECT_PATH, &path,
854 DBUS_TYPE_INVALID)) {
855 log_error("Failed to parse reply: %s", error.message);
856 r = -EIO;
857 goto finish;
858 }
859
860 dbus_message_unref(m);
861 if (!(m = dbus_message_new_method_call(
862 "org.freedesktop.systemd1",
863 path,
864 "org.freedesktop.DBus.Properties",
865 "Get"))) {
866 log_error("Could not allocate message.");
867 r = -ENOMEM;
868 goto finish;
869 }
870
871 if (!dbus_message_append_args(m,
872 DBUS_TYPE_STRING, &interface,
873 DBUS_TYPE_STRING, &property,
874 DBUS_TYPE_INVALID)) {
875 log_error("Could not append arguments to message.");
876 r = -ENOMEM;
877 goto finish;
878 }
879
880 dbus_message_unref(reply);
881 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
882 log_error("Failed to issue method call: %s", error.message);
883 r = -EIO;
884 goto finish;
885 }
886
887 if (!dbus_message_iter_init(reply, &iter) ||
888 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
889 log_error("Failed to parse reply.");
890 r = -EIO;
891 goto finish;
892 }
893
894 dbus_message_iter_recurse(&iter, &sub);
895
896 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
897 log_error("Failed to parse reply.");
898 r = -EIO;
899 goto finish;
900 }
901
902 dbus_message_iter_get_basic(&sub, &state);
903
904 if (!arg_quiet)
905 puts(state);
906
01b1b079 907 if (streq(state, "active") || startswith(state, "reloading"))
0183528f
LP		 908 r = 0;
909
910 dbus_message_unref(m);
911 dbus_message_unref(reply);
912 m = reply = NULL;
913 }
914
915finish:
916 if (m)
917 dbus_message_unref(m);
918
919 if (reply)
920 dbus_message_unref(reply);
921
922 dbus_error_free(&error);
923
924 return r;
48220598
LP		 925}
926
582a507f
LP		 927typedef struct ExecStatusInfo {
928 char *path;
929 char **argv;
930
931 usec_t start_timestamp;
932 usec_t exit_timestamp;
933 pid_t pid;
934 int code;
935 int status;
936
937 LIST_FIELDS(struct ExecStatusInfo, exec);
938} ExecStatusInfo;
939
940static void exec_status_info_free(ExecStatusInfo *i) {
941 assert(i);
942
943 free(i->path);
944 strv_free(i->argv);
945 free(i);
946}
947
948static int exec_status_info_deserialize(DBusMessageIter *sub, ExecStatusInfo *i) {
949 uint64_t start_timestamp, exit_timestamp;
950 DBusMessageIter sub2, sub3;
951 const char*path;
952 unsigned n;
953 uint32_t pid;
954 int32_t code, status;
955
956 assert(i);
957 assert(i);
958
959 if (dbus_message_iter_get_arg_type(sub) != DBUS_TYPE_STRUCT)
960 return -EIO;
961
962 dbus_message_iter_recurse(sub, &sub2);
963
964 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, true) < 0)
965 return -EIO;
966
967 if (!(i->path = strdup(path)))
968 return -ENOMEM;
969
970 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_ARRAY ||
971 dbus_message_iter_get_element_type(&sub2) != DBUS_TYPE_STRING)
972 return -EIO;
973
974 n = 0;
975 dbus_message_iter_recurse(&sub2, &sub3);
976 while (dbus_message_iter_get_arg_type(&sub3) != DBUS_TYPE_INVALID) {
977 assert(dbus_message_iter_get_arg_type(&sub3) == DBUS_TYPE_STRING);
978 dbus_message_iter_next(&sub3);
979 n++;
980 }
981
982
983 if (!(i->argv = new0(char*, n+1)))
984 return -ENOMEM;
985
986 n = 0;
987 dbus_message_iter_recurse(&sub2, &sub3);
988 while (dbus_message_iter_get_arg_type(&sub3) != DBUS_TYPE_INVALID) {
989 const char *s;
990
991 assert(dbus_message_iter_get_arg_type(&sub3) == DBUS_TYPE_STRING);
992 dbus_message_iter_get_basic(&sub3, &s);
993 dbus_message_iter_next(&sub3);
994
995 if (!(i->argv[n++] = strdup(s)))
996 return -ENOMEM;
997 }
998
999 if (!dbus_message_iter_next(&sub2) ||
1000 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &start_timestamp, true) < 0 ||
1001 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &exit_timestamp, true) < 0 ||
1002 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &pid, true) < 0 ||
1003 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_INT32, &code, true) < 0 ||
1004 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_INT32, &status, false) < 0)
1005 return -EIO;
1006
1007 i->start_timestamp = (usec_t) start_timestamp;
1008 i->exit_timestamp = (usec_t) exit_timestamp;
1009 i->pid = (pid_t) pid;
1010 i->code = code;
1011 i->status = status;
1012
1013 return 0;
1014}
1015
61cbdc4b
LP		 1016typedef struct UnitStatusInfo {
1017 const char *id;
1018 const char *load_state;
1019 const char *active_state;
1020 const char *sub_state;
1021
1022 const char *description;
1023
1024 const char *fragment_path;
1025 const char *default_control_group;
1026
1027 /* Service */
1028 pid_t main_pid;
1029 pid_t control_pid;
1030 const char *status_text;
1031 bool running;
1032
1033 usec_t start_timestamp;
1034 usec_t exit_timestamp;
1035
1036 int exit_code, exit_status;
1037
1038 /* Socket */
1039 unsigned n_accepted;
1040 unsigned n_connections;
b8131a87 1041 bool accept;
61cbdc4b
LP		 1042
1043 /* Device */
1044 const char *sysfs_path;
1045
1046 /* Mount, Automount */
1047 const char *where;
1048
1049 /* Swap */
1050 const char *what;
582a507f
LP		 1051
1052 LIST_HEAD(ExecStatusInfo, exec);
61cbdc4b
LP		 1053} UnitStatusInfo;
1054
1055static void print_status_info(UnitStatusInfo *i) {
582a507f 1056 ExecStatusInfo *p;
c6c18be3 1057 int r;
582a507f 1058
61cbdc4b
LP		 1059 assert(i);
1060
1061 /* This shows pretty information about a unit. See
1062 * print_property() for a low-level property printer */
1063
1064 printf("%s", strna(i->id));
1065
1066 if (i->description && !streq_ptr(i->id, i->description))
1067 printf(" - %s", i->description);
1068
1069 printf("\n");
1070
1071 if (i->fragment_path)
1072 printf("\t Loaded: %s (%s)\n", strna(i->load_state), i->fragment_path);
1073 else if (streq_ptr(i->load_state, "failed"))
1074 printf("\t Loaded: " ANSI_HIGHLIGHT_ON "%s" ANSI_HIGHLIGHT_OFF "\n", strna(i->load_state));
1075 else
1076 printf("\t Loaded: %s\n", strna(i->load_state));
1077
582a507f
LP		 1078 if (streq_ptr(i->active_state, "maintenance")) {
1079 if (streq_ptr(i->active_state, i->sub_state))
1080 printf("\t Active: " ANSI_HIGHLIGHT_ON "%s" ANSI_HIGHLIGHT_OFF "\n",
1081 strna(i->active_state));
1082 else
1083 printf("\t Active: " ANSI_HIGHLIGHT_ON "%s (%s)" ANSI_HIGHLIGHT_OFF "\n",
1084 strna(i->active_state),
1085 strna(i->sub_state));
1086 } else {
1087 if (streq_ptr(i->active_state, i->sub_state))
1088 printf("\t Active: %s\n",
1089 strna(i->active_state));
1090 else
1091 printf("\t Active: %s (%s)\n",
1092 strna(i->active_state),
1093 strna(i->sub_state));
1094 }
61cbdc4b
LP		 1095
1096 if (i->sysfs_path)
1097 printf("\t Device: %s\n", i->sysfs_path);
1098 else if (i->where)
1099 printf("\t Where: %s\n", i->where);
1100 else if (i->what)
1101 printf("\t What: %s\n", i->what);
1102
1103 if (i->status_text)
1104 printf("\t Status: \"%s\"\n", i->status_text);
1105
b8131a87 1106 if (i->accept)
61cbdc4b
LP		 1107 printf("\tAccepted: %u; Connected: %u\n", i->n_accepted, i->n_connections);
1108
582a507f
LP		 1109 LIST_FOREACH(exec, p, i->exec) {
1110 char *t;
1111
1112 /* Only show exited processes here */
1113 if (p->code == 0)
1114 continue;
1115
1116 t = strv_join(p->argv, " ");
1117 printf("\t Exited: %u (%s, code=%s, ", p->pid, strna(t), sigchld_code_to_string(p->code));
1118 free(t);
1119
1120 if (p->code == CLD_EXITED)
1121 printf("status=%i", p->status);
1122 else
1123 printf("signal=%s", signal_to_string(p->status));
1124 printf(")\n");
1125
1126 if (i->main_pid == p->pid &&
1127 i->start_timestamp == p->start_timestamp &&
1128 i->exit_timestamp == p->start_timestamp)
1129 /* Let's not show this twice */
1130 i->main_pid = 0;
1131
1132 if (p->pid == i->control_pid)
1133 i->control_pid = 0;
1134 }
1135
61cbdc4b
LP		 1136 if (i->main_pid > 0 || i->control_pid > 0) {
1137 printf("\t");
1138
1139 if (i->main_pid > 0) {
582a507f 1140 printf(" Main: %u", (unsigned) i->main_pid);
61cbdc4b
LP		 1141
1142 if (i->running) {
1143 char *t = NULL;
1144 get_process_name(i->main_pid, &t);
1145 if (t) {
1146 printf(" (%s)", t);
1147 free(t);
1148 }
1149 } else {
1150 printf(" (code=%s, ", sigchld_code_to_string(i->exit_code));
1151
1152 if (i->exit_code == CLD_EXITED)
1153 printf("status=%i", i->exit_status);
1154 else
582a507f 1155 printf("signal=%s", signal_to_string(i->exit_status));
61cbdc4b
LP		 1156 printf(")");
1157 }
1158 }
1159
1160 if (i->main_pid > 0 && i->control_pid > 0)
1161 printf(";");
1162
1163 if (i->control_pid > 0) {
1164 char *t = NULL;
1165
1166 printf(" Control: %u", (unsigned) i->control_pid);
1167
1168 get_process_name(i->control_pid, &t);
1169 if (t) {
1170 printf(" (%s)", t);
1171 free(t);
1172 }
1173 }
1174
1175 printf("\n");
1176 }
1177
c59760ee 1178 if (i->default_control_group) {
ab35fb1b
LP		 1179 unsigned c;
1180
61cbdc4b 1181 printf("\t CGroup: %s\n", i->default_control_group);
ab35fb1b
LP		 1182
1183 if ((c = columns()) > 18)
1184 c -= 18;
1185 else
1186 c = 0;
1187
c6c18be3
LP		 1188 if ((r = cg_init()) < 0)
1189 log_error("Failed to initialize libcg: %s", strerror(-r));
1190 else
1191 show_cgroup_recursive(i->default_control_group, "\t\t ", c);
c59760ee 1192 }
61cbdc4b
LP		 1193}
1194
1195static int status_property(const char *name, DBusMessageIter *iter, UnitStatusInfo *i) {
1196
1197 switch (dbus_message_iter_get_arg_type(iter)) {
1198
1199 case DBUS_TYPE_STRING: {
1200 const char *s;
1201
1202 dbus_message_iter_get_basic(iter, &s);
1203
1204 if (s[0]) {
1205 if (streq(name, "Id"))
1206 i->id = s;
1207 else if (streq(name, "LoadState"))
1208 i->load_state = s;
1209 else if (streq(name, "ActiveState"))
1210 i->active_state = s;
1211 else if (streq(name, "SubState"))
1212 i->sub_state = s;
1213 else if (streq(name, "Description"))
1214 i->description = s;
1215 else if (streq(name, "FragmentPath"))
1216 i->fragment_path = s;
1217 else if (streq(name, "DefaultControlGroup"))
1218 i->default_control_group = s;
1219 else if (streq(name, "StatusText"))
1220 i->status_text = s;
1221 else if (streq(name, "SysFSPath"))
1222 i->sysfs_path = s;
1223 else if (streq(name, "Where"))
1224 i->where = s;
1225 else if (streq(name, "What"))
1226 i->what = s;
1227 }
1228
1229 break;
1230 }
1231
b8131a87
LP		 1232 case DBUS_TYPE_BOOLEAN: {
1233 dbus_bool_t b;
1234
1235 dbus_message_iter_get_basic(iter, &b);
1236
1237 if (streq(name, "Accept"))
1238 i->accept = b;
1239
1240 break;
1241 }
1242
61cbdc4b
LP		 1243 case DBUS_TYPE_UINT32: {
1244 uint32_t u;
1245
1246 dbus_message_iter_get_basic(iter, &u);
1247
1248 if (streq(name, "MainPID")) {
1249 if (u > 0) {
1250 i->main_pid = (pid_t) u;
1251 i->running = true;
1252 }
1253 } else if (streq(name, "ControlPID"))
1254 i->control_pid = (pid_t) u;
1255 else if (streq(name, "ExecMainPID")) {
1256 if (u > 0)
1257 i->main_pid = (pid_t) u;
1258 } else if (streq(name, "NAccepted"))
1259 i->n_accepted = u;
1260 else if (streq(name, "NConnections"))
1261 i->n_connections = u;
1262
1263 break;
1264 }
1265
1266 case DBUS_TYPE_INT32: {
1267 int32_t j;
1268
1269 dbus_message_iter_get_basic(iter, &j);
1270
1271 if (streq(name, "ExecMainCode"))
1272 i->exit_code = (int) j;
1273 else if (streq(name, "ExecMainStatus"))
1274 i->exit_status = (int) j;
1275
1276 break;
1277 }
1278
1279 case DBUS_TYPE_UINT64: {
1280 uint64_t u;
1281
1282 dbus_message_iter_get_basic(iter, &u);
1283
1284 if (streq(name, "ExecMainStartTimestamp"))
1285 i->start_timestamp = (usec_t) u;
1286 else if (streq(name, "ExecMainExitTimestamp"))
1287 i->exit_timestamp = (usec_t) u;
1288
1289 break;
1290 }
582a507f
LP		 1291
1292 case DBUS_TYPE_ARRAY: {
1293
1294 if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT &&
1295 startswith(name, "Exec")) {
1296 DBusMessageIter sub;
1297
1298 dbus_message_iter_recurse(iter, &sub);
1299 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
1300 ExecStatusInfo *info;
1301 int r;
1302
1303 if (!(info = new0(ExecStatusInfo, 1)))
1304 return -ENOMEM;
1305
1306 if ((r = exec_status_info_deserialize(&sub, info)) < 0) {
1307 free(info);
1308 return r;
1309 }
1310
1311 LIST_PREPEND(ExecStatusInfo, exec, i->exec, info);
1312
1313 dbus_message_iter_next(&sub);
1314 }
1315 }
1316
1317 break;
1318 }
61cbdc4b
LP		 1319 }
1320
1321 return 0;
1322}
1323
48220598
LP		 1324static int print_property(const char *name, DBusMessageIter *iter) {
1325 assert(name);
1326 assert(iter);
1327
61cbdc4b
LP		 1328 /* This is a low-level property printer, see
1329 * print_status_info() for the nicer output */
1330
48220598
LP		 1331 if (arg_property && !streq(name, arg_property))
1332 return 0;
1333
1334 switch (dbus_message_iter_get_arg_type(iter)) {
1335
1336 case DBUS_TYPE_STRING: {
1337 const char *s;
1338 dbus_message_iter_get_basic(iter, &s);
1339
1340 if (arg_all || s[0])
1341 printf("%s=%s\n", name, s);
1342
1343 return 0;
1344 }
1345
1346 case DBUS_TYPE_BOOLEAN: {
1347 dbus_bool_t b;
1348 dbus_message_iter_get_basic(iter, &b);
1349 printf("%s=%s\n", name, yes_no(b));
1350
1351 return 0;
1352 }
1353
1354 case DBUS_TYPE_UINT64: {
1355 uint64_t u;
1356 dbus_message_iter_get_basic(iter, &u);
1357
1358 /* Yes, heuristics! But we can change this check
1359 * should it turn out to not be sufficient */
1360
14ad1d14 1361 if (strstr(name, "Timestamp")) {
48220598
LP		 1362 char timestamp[FORMAT_TIMESTAMP_MAX], *t;
1363
1364 if ((t = format_timestamp(timestamp, sizeof(timestamp), u)) || arg_all)
1365 printf("%s=%s\n", name, strempty(t));
552e4331
LP		 1366 } else if (strstr(name, "USec")) {
1367 char timespan[FORMAT_TIMESPAN_MAX];
1368
1369 printf("%s=%s\n", name, format_timespan(timespan, sizeof(timespan), u));
48220598
LP		 1370 } else
1371 printf("%s=%llu\n", name, (unsigned long long) u);
1372
1373 return 0;
1374 }
1375
1376 case DBUS_TYPE_UINT32: {
1377 uint32_t u;
1378 dbus_message_iter_get_basic(iter, &u);
1379
5bd07073 1380 if (strstr(name, "UMask") || strstr(name, "Mode"))
48220598
LP		 1381 printf("%s=%04o\n", name, u);
1382 else
1383 printf("%s=%u\n", name, (unsigned) u);
1384
1385 return 0;
1386 }
1387
1388 case DBUS_TYPE_INT32: {
1389 int32_t i;
1390 dbus_message_iter_get_basic(iter, &i);
1391
1392 printf("%s=%i\n", name, (int) i);
1393 return 0;
1394 }
1395
1396 case DBUS_TYPE_STRUCT: {
1397 DBusMessageIter sub;
1398 dbus_message_iter_recurse(iter, &sub);
1399
ebf57b80 1400 if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_UINT32 && streq(name, "Job")) {
48220598
LP		 1401 uint32_t u;
1402
1403 dbus_message_iter_get_basic(&sub, &u);
1404
1405 if (u)
1406 printf("%s=%u\n", name, (unsigned) u);
1407 else if (arg_all)
1408 printf("%s=\n", name);
1409
1410 return 0;
ebf57b80 1411 } else if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING && streq(name, "Unit")) {
48220598
LP		 1412 const char *s;
1413
1414 dbus_message_iter_get_basic(&sub, &s);
1415
1416 if (arg_all || s[0])
1417 printf("%s=%s\n", name, s);
1418
1419 return 0;
1420 }
1421
1422 break;
1423 }
1424
1425 case DBUS_TYPE_ARRAY:
1426
1427 if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRING) {
1428 DBusMessageIter sub;
1429 bool space = false;
1430
1431 dbus_message_iter_recurse(iter, &sub);
48220598
LP		 1432 if (arg_all ||
1433 dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
1434 printf("%s=", name);
1435
1436 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
1437 const char *s;
1438
1439 assert(dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING);
1440 dbus_message_iter_get_basic(&sub, &s);
1441 printf("%s%s", space ? " " : "", s);
1442
1443 space = true;
1444 dbus_message_iter_next(&sub);
1445 }
1446
1447 puts("");
1448 }
1449
ebf57b80 1450 return 0;
582a507f 1451
82c121a4
LP		 1452 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_BYTE) {
1453 DBusMessageIter sub;
1454
1455 dbus_message_iter_recurse(iter, &sub);
82c121a4
LP		 1456 if (arg_all ||
1457 dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
1458 printf("%s=", name);
1459
1460 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
1461 uint8_t u;
ebf57b80 1462
82c121a4
LP		 1463 assert(dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_BYTE);
1464 dbus_message_iter_get_basic(&sub, &u);
1465 printf("%02x", u);
1466
1467 dbus_message_iter_next(&sub);
1468 }
1469
1470 puts("");
1471 }
1472
1473 return 0;
582a507f 1474
ebf57b80
LP		 1475 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Paths")) {
1476 DBusMessageIter sub, sub2;
1477
1478 dbus_message_iter_recurse(iter, &sub);
ebf57b80
LP		 1479 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
1480 const char *type, *path;
1481
1482 dbus_message_iter_recurse(&sub, &sub2);
1483
1484 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) >= 0 &&
1485 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, false) >= 0)
1486 printf("%s=%s\n", type, path);
1487
1488 dbus_message_iter_next(&sub);
1489 }
1490
707e5e52 1491 return 0;
582a507f 1492
707e5e52
LP		 1493 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Timers")) {
1494 DBusMessageIter sub, sub2;
1495
1496 dbus_message_iter_recurse(iter, &sub);
707e5e52
LP		 1497 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
1498 const char *base;
1499 uint64_t value, next_elapse;
1500
1501 dbus_message_iter_recurse(&sub, &sub2);
1502
1503 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &base, true) >= 0 &&
1504 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &value, true) >= 0 &&
552e4331
LP		 1505 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &next_elapse, false) >= 0) {
1506 char timespan1[FORMAT_TIMESPAN_MAX], timespan2[FORMAT_TIMESPAN_MAX];
1507
1508 printf("%s={ value=%s ; next_elapse=%s }\n",
fe68089d 1509 base,
552e4331
LP		 1510 format_timespan(timespan1, sizeof(timespan1), value),
1511 format_timespan(timespan2, sizeof(timespan2), next_elapse));
1512 }
fe68089d
LP		 1513
1514 dbus_message_iter_next(&sub);
1515 }
1516
1517 return 0;
fe68089d 1518
582a507f
LP		 1519 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && startswith(name, "Exec")) {
1520 DBusMessageIter sub;
fe68089d
LP		 1521
1522 dbus_message_iter_recurse(iter, &sub);
fe68089d 1523 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
582a507f 1524 ExecStatusInfo info;
fe68089d 1525
582a507f
LP		 1526 zero(info);
1527 if (exec_status_info_deserialize(&sub, &info) >= 0) {
fe68089d 1528 char timestamp1[FORMAT_TIMESTAMP_MAX], timestamp2[FORMAT_TIMESTAMP_MAX];
582a507f
LP		 1529 char *t;
1530
1531 t = strv_join(info.argv, " ");
1532
1533 printf("%s={ path=%s ; argv[]=%s; start_time=[%s] ; stop_time=[%s] ; pid=%u ; code=%s ; status=%i%s%s }\n",
1534 name,
1535 strna(info.path),
1536 strna(t),
1537 strna(format_timestamp(timestamp1, sizeof(timestamp1), info.start_timestamp)),
1538 strna(format_timestamp(timestamp2, sizeof(timestamp2), info.exit_timestamp)),
1539 (unsigned) info. pid,
1540 sigchld_code_to_string(info.code),
1541 info.status,
1542 info.code == CLD_EXITED ? "" : "/",
1543 strempty(info.code == CLD_EXITED ? NULL : signal_to_string(info.status)));
fe68089d 1544
582a507f 1545 free(t);
fe68089d
LP		 1546 }
1547
582a507f
LP		 1548 free(info.path);
1549 strv_free(info.argv);
707e5e52
LP		 1550
1551 dbus_message_iter_next(&sub);
1552 }
1553
48220598
LP		 1554 return 0;
1555 }
1556
1557 break;
1558 }
1559
1560 if (arg_all)
1561 printf("%s=[unprintable]\n", name);
1562
1563 return 0;
1564}
1565
61cbdc4b 1566static int show_one(DBusConnection *bus, const char *path, bool show_properties, bool *new_line) {
48220598
LP		 1567 DBusMessage *m = NULL, *reply = NULL;
1568 const char *interface = "";
1569 int r;
1570 DBusError error;
1571 DBusMessageIter iter, sub, sub2, sub3;
61cbdc4b 1572 UnitStatusInfo info;
582a507f 1573 ExecStatusInfo *p;
48220598
LP		 1574
1575 assert(bus);
1576 assert(path);
61cbdc4b 1577 assert(new_line);
48220598 1578
61cbdc4b 1579 zero(info);
48220598
LP		 1580 dbus_error_init(&error);
1581
1582 if (!(m = dbus_message_new_method_call(
1583 "org.freedesktop.systemd1",
1584 path,
1585 "org.freedesktop.DBus.Properties",
1586 "GetAll"))) {
1587 log_error("Could not allocate message.");
1588 r = -ENOMEM;
1589 goto finish;
1590 }
1591
1592 if (!dbus_message_append_args(m,
1593 DBUS_TYPE_STRING, &interface,
1594 DBUS_TYPE_INVALID)) {
1595 log_error("Could not append arguments to message.");
1596 r = -ENOMEM;
1597 goto finish;
1598 }
1599
1600 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1601 log_error("Failed to issue method call: %s", error.message);
1602 r = -EIO;
1603 goto finish;
1604 }
1605
1606 if (!dbus_message_iter_init(reply, &iter) ||
1607 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
1608 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_DICT_ENTRY) {
1609 log_error("Failed to parse reply.");
1610 r = -EIO;
1611 goto finish;
1612 }
1613
1614 dbus_message_iter_recurse(&iter, &sub);
1615
61cbdc4b
LP		 1616 if (*new_line)
1617 printf("\n");
1618
1619 *new_line = true;
1620
48220598
LP		 1621 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
1622 const char *name;
1623
1624 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_DICT_ENTRY) {
1625 log_error("Failed to parse reply.");
1626 r = -EIO;
1627 goto finish;
1628 }
1629
1630 dbus_message_iter_recurse(&sub, &sub2);
0183528f 1631
48220598
LP		 1632 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0) {
1633 log_error("Failed to parse reply.");
1634 r = -EIO;
1635 goto finish;
1636 }
1637
1638 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT) {
1639 log_error("Failed to parse reply.");
1640 r = -EIO;
1641 goto finish;
1642 }
1643
1644 dbus_message_iter_recurse(&sub2, &sub3);
1645
61cbdc4b
LP		 1646 if (show_properties)
1647 r = print_property(name, &sub3);
1648 else
1649 r = status_property(name, &sub3, &info);
1650
1651 if (r < 0) {
48220598
LP		 1652 log_error("Failed to parse reply.");
1653 r = -EIO;
1654 goto finish;
1655 }
1656
1657 dbus_message_iter_next(&sub);
1658 }
1659
61cbdc4b
LP		 1660 if (!show_properties)
1661 print_status_info(&info);
1662
582a507f
LP		 1663 while ((p = info.exec)) {
1664 LIST_REMOVE(ExecStatusInfo, exec, info.exec, p);
1665 exec_status_info_free(p);
1666 }
1667
48220598
LP		 1668 r = 0;
1669
1670finish:
1671 if (m)
1672 dbus_message_unref(m);
1673
1674 if (reply)
1675 dbus_message_unref(reply);
1676
1677 dbus_error_free(&error);
1678
1679 return r;
1680}
1681
1682static int show(DBusConnection *bus, char **args, unsigned n) {
1683 DBusMessage *m = NULL, *reply = NULL;
1684 int r;
1685 DBusError error;
1686 unsigned i;
61cbdc4b 1687 bool show_properties, new_line = false;
48220598
LP		 1688
1689 assert(bus);
1690 assert(args);
1691
1692 dbus_error_init(&error);
1693
61cbdc4b
LP		 1694 show_properties = !streq(args[0], "status");
1695
1696 if (show_properties && n <= 1) {
48220598
LP		 1697 /* If not argument is specified inspect the manager
1698 * itself */
1699
61cbdc4b 1700 r = show_one(bus, "/org/freedesktop/systemd1", show_properties, &new_line);
48220598
LP		 1701 goto finish;
1702 }
1703
1704 for (i = 1; i < n; i++) {
1705 const char *path = NULL;
1706 uint32_t id;
1707
61cbdc4b 1708 if (!show_properties || safe_atou32(args[i], &id) < 0) {
48220598
LP		 1709
1710 if (!(m = dbus_message_new_method_call(
1711 "org.freedesktop.systemd1",
1712 "/org/freedesktop/systemd1",
1713 "org.freedesktop.systemd1.Manager",
e87d1818 1714 "LoadUnit"))) {
48220598
LP		 1715 log_error("Could not allocate message.");
1716 r = -ENOMEM;
1717 goto finish;
1718 }
1719
1720 if (!dbus_message_append_args(m,
1721 DBUS_TYPE_STRING, &args[i],
1722 DBUS_TYPE_INVALID)) {
1723 log_error("Could not append arguments to message.");
1724 r = -ENOMEM;
1725 goto finish;
1726 }
1727
ed2d7a44
LP		 1728 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1729
1730 if (!dbus_error_has_name(&error, DBUS_ERROR_ACCESS_DENIED)) {
1731 log_error("Failed to issue method call: %s", error.message);
1732 r = -EIO;
1733 goto finish;
1734 }
1735
1736 dbus_error_free(&error);
1737
1738 dbus_message_unref(m);
1739 if (!(m = dbus_message_new_method_call(
1740 "org.freedesktop.systemd1",
1741 "/org/freedesktop/systemd1",
1742 "org.freedesktop.systemd1.Manager",
1743 "GetUnit"))) {
1744 log_error("Could not allocate message.");
1745 r = -ENOMEM;
1746 goto finish;
1747 }
1748
1749 if (!dbus_message_append_args(m,
1750 DBUS_TYPE_STRING, &args[i],
1751 DBUS_TYPE_INVALID)) {
1752 log_error("Could not append arguments to message.");
1753 r = -ENOMEM;
1754 goto finish;
1755 }
1756
1757 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1758 log_error("Failed to issue method call: %s", error.message);
1759 r = -EIO;
1760 goto finish;
1761 }
1762 }
1763
48220598
LP		 1764 } else {
1765
1766 if (!(m = dbus_message_new_method_call(
1767 "org.freedesktop.systemd1",
1768 "/org/freedesktop/systemd1",
1769 "org.freedesktop.systemd1.Manager",
1770 "GetJob"))) {
1771 log_error("Could not allocate message.");
1772 r = -ENOMEM;
1773 goto finish;
1774 }
1775
1776 if (!dbus_message_append_args(m,
1777 DBUS_TYPE_UINT32, &id,
1778 DBUS_TYPE_INVALID)) {
1779 log_error("Could not append arguments to message.");
1780 r = -ENOMEM;
1781 goto finish;
1782 }
48220598 1783
ed2d7a44
LP		 1784 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1785 log_error("Failed to issue method call: %s", error.message);
1786 r = -EIO;
1787 goto finish;
1788 }
48220598
LP		 1789 }
1790
1791 if (!dbus_message_get_args(reply, &error,
1792 DBUS_TYPE_OBJECT_PATH, &path,
1793 DBUS_TYPE_INVALID)) {
1794 log_error("Failed to parse reply: %s", error.message);
1795 r = -EIO;
1796 goto finish;
1797 }
1798
61cbdc4b 1799 if ((r = show_one(bus, path, show_properties, &new_line)) < 0)
48220598
LP		 1800 goto finish;
1801
1802 dbus_message_unref(m);
1803 dbus_message_unref(reply);
1804 m = reply = NULL;
1805 }
1806
1807 r = 0;
1808
1809finish:
1810 if (m)
1811 dbus_message_unref(m);
1812
1813 if (reply)
1814 dbus_message_unref(reply);
1815
1816 dbus_error_free(&error);
1817
1818 return r;
0183528f
LP		 1819}
1820
7e4249b9
LP		 1821static DBusHandlerResult monitor_filter(DBusConnection *connection, DBusMessage *message, void *data) {
1822 DBusError error;
1823 DBusMessage *m = NULL, *reply = NULL;
1824
1825 assert(connection);
1826 assert(message);
1827
1828 dbus_error_init(&error);
1829
54165a39
LP		 1830 log_debug("Got D-Bus request: %s.%s() on %s",
1831 dbus_message_get_interface(message),
1832 dbus_message_get_member(message),
1833 dbus_message_get_path(message));
7e4249b9
LP		 1834
1835 if (dbus_message_is_signal(message, DBUS_INTERFACE_LOCAL, "Disconnected")) {
1836 log_error("Warning! D-Bus connection terminated.");
1837 dbus_connection_close(connection);
1838
1839 } else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "UnitNew") ||
1840 dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "UnitRemoved")) {
1841 const char *id, *path;
1842
1843 if (!dbus_message_get_args(message, &error,
1844 DBUS_TYPE_STRING, &id,
1845 DBUS_TYPE_OBJECT_PATH, &path,
1846 DBUS_TYPE_INVALID))
1847 log_error("Failed to parse message: %s", error.message);
1848 else if (streq(dbus_message_get_member(message), "UnitNew"))
1849 printf("Unit %s added.\n", id);
1850 else
1851 printf("Unit %s removed.\n", id);
1852
1853 } else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "JobNew") ||
1854 dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "JobRemoved")) {
1855 uint32_t id;
1856 const char *path;
1857
1858 if (!dbus_message_get_args(message, &error,
1859 DBUS_TYPE_UINT32, &id,
1860 DBUS_TYPE_OBJECT_PATH, &path,
1861 DBUS_TYPE_INVALID))
1862 log_error("Failed to parse message: %s", error.message);
1863 else if (streq(dbus_message_get_member(message), "JobNew"))
1864 printf("Job %u added.\n", id);
1865 else
1866 printf("Job %u removed.\n", id);
1867
1868
1869 } else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Unit", "Changed") ||
1870 dbus_message_is_signal(message, "org.freedesktop.systemd1.Job", "Changed")) {
1871
1872 const char *path, *interface, *property = "Id";
1873 DBusMessageIter iter, sub;
1874
1875 path = dbus_message_get_path(message);
1876 interface = dbus_message_get_interface(message);
1877
1878 if (!(m = dbus_message_new_method_call(
1879 "org.freedesktop.systemd1",
1880 path,
1881 "org.freedesktop.DBus.Properties",
1882 "Get"))) {
1883 log_error("Could not allocate message.");
1884 goto oom;
1885 }
1886
1887 if (!dbus_message_append_args(m,
1888 DBUS_TYPE_STRING, &interface,
1889 DBUS_TYPE_STRING, &property,
1890 DBUS_TYPE_INVALID)) {
1891 log_error("Could not append arguments to message.");
1892 goto finish;
1893 }
1894
1895 if (!(reply = dbus_connection_send_with_reply_and_block(connection, m, -1, &error))) {
1896 log_error("Failed to issue method call: %s", error.message);
1897 goto finish;
1898 }
1899
1900 if (!dbus_message_iter_init(reply, &iter) ||
1901 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
1902 log_error("Failed to parse reply.");
1903 goto finish;
1904 }
1905
1906 dbus_message_iter_recurse(&iter, &sub);
1907
1908 if (streq(interface, "org.freedesktop.systemd1.Unit")) {
1909 const char *id;
1910
1911 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
1912 log_error("Failed to parse reply.");
1913 goto finish;
1914 }
1915
1916 dbus_message_iter_get_basic(&sub, &id);
1917 printf("Unit %s changed.\n", id);
1918 } else {
1919 uint32_t id;
1920
1921 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_UINT32) {
1922 log_error("Failed to parse reply.");
1923 goto finish;
1924 }
1925
1926 dbus_message_iter_get_basic(&sub, &id);
1927 printf("Job %u changed.\n", id);
1928 }
1929 }
1930
1931finish:
1932 if (m)
1933 dbus_message_unref(m);
1934
1935 if (reply)
1936 dbus_message_unref(reply);
1937
1938 dbus_error_free(&error);
1939 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1940
1941oom:
1942 if (m)
1943 dbus_message_unref(m);
1944
1945 if (reply)
1946 dbus_message_unref(reply);
1947
1948 dbus_error_free(&error);
1949 return DBUS_HANDLER_RESULT_NEED_MEMORY;
1950}
1951
1952static int monitor(DBusConnection *bus, char **args, unsigned n) {
1953 DBusMessage *m = NULL, *reply = NULL;
1954 DBusError error;
1955 int r;
1956
1957 dbus_error_init(&error);
1958
f4579ce7
LP		 1959 if (!private_bus) {
1960 dbus_bus_add_match(bus,
1961 "type='signal',"
1962 "sender='org.freedesktop.systemd1',"
1963 "interface='org.freedesktop.systemd1.Manager',"
1964 "path='/org/freedesktop/systemd1'",
1965 &error);
7e4249b9 1966
f4579ce7
LP		 1967 if (dbus_error_is_set(&error)) {
1968 log_error("Failed to add match: %s", error.message);
1969 r = -EIO;
1970 goto finish;
1971 }
7e4249b9 1972
f4579ce7
LP		 1973 dbus_bus_add_match(bus,
1974 "type='signal',"
1975 "sender='org.freedesktop.systemd1',"
1976 "interface='org.freedesktop.systemd1.Unit',"
1977 "member='Changed'",
1978 &error);
7e4249b9 1979
f4579ce7
LP		 1980 if (dbus_error_is_set(&error)) {
1981 log_error("Failed to add match: %s", error.message);
1982 r = -EIO;
1983 goto finish;
1984 }
7e4249b9 1985
f4579ce7
LP		 1986 dbus_bus_add_match(bus,
1987 "type='signal',"
1988 "sender='org.freedesktop.systemd1',"
1989 "interface='org.freedesktop.systemd1.Job',"
1990 "member='Changed'",
1991 &error);
7e4249b9 1992
f4579ce7
LP		 1993 if (dbus_error_is_set(&error)) {
1994 log_error("Failed to add match: %s", error.message);
1995 r = -EIO;
1996 goto finish;
1997 }
7e4249b9
LP		 1998 }
1999
2000 if (!dbus_connection_add_filter(bus, monitor_filter, NULL, NULL)) {
2001 log_error("Failed to add filter.");
2002 r = -ENOMEM;
2003 goto finish;
2004 }
2005
2006 if (!(m = dbus_message_new_method_call(
2007 "org.freedesktop.systemd1",
2008 "/org/freedesktop/systemd1",
2009 "org.freedesktop.systemd1.Manager",
2010 "Subscribe"))) {
2011 log_error("Could not allocate message.");
2012 r = -ENOMEM;
2013 goto finish;
2014 }
2015
2016 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2017 log_error("Failed to issue method call: %s", error.message);
2018 r = -EIO;
2019 goto finish;
2020 }
2021
2022 while (dbus_connection_read_write_dispatch(bus, -1))
2023 ;
2024
2025 r = 0;
2026
2027finish:
2028
2029 /* This is slightly dirty, since we don't undo the filter or the matches. */
2030
2031 if (m)
2032 dbus_message_unref(m);
2033
2034 if (reply)
2035 dbus_message_unref(reply);
2036
2037 dbus_error_free(&error);
2038
2039 return r;
2040}
2041
2042static int dump(DBusConnection *bus, char **args, unsigned n) {
2043 DBusMessage *m = NULL, *reply = NULL;
2044 DBusError error;
2045 int r;
2046 const char *text;
2047
2048 dbus_error_init(&error);
2049
2050 if (!(m = dbus_message_new_method_call(
2051 "org.freedesktop.systemd1",
2052 "/org/freedesktop/systemd1",
2053 "org.freedesktop.systemd1.Manager",
2054 "Dump"))) {
2055 log_error("Could not allocate message.");
2056 return -ENOMEM;
2057 }
2058
2059 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2060 log_error("Failed to issue method call: %s", error.message);
2061 r = -EIO;
2062 goto finish;
2063 }
2064
2065 if (!dbus_message_get_args(reply, &error,
2066 DBUS_TYPE_STRING, &text,
2067 DBUS_TYPE_INVALID)) {
2068 log_error("Failed to parse reply: %s", error.message);
2069 r = -EIO;
2070 goto finish;
2071 }
2072
2073 fputs(text, stdout);
2074
2075 r = 0;
2076
2077finish:
2078 if (m)
2079 dbus_message_unref(m);
2080
2081 if (reply)
2082 dbus_message_unref(reply);
2083
2084 dbus_error_free(&error);
2085
2086 return r;
2087}
2088
2089static int snapshot(DBusConnection *bus, char **args, unsigned n) {
2090 DBusMessage *m = NULL, *reply = NULL;
2091 DBusError error;
2092 int r;
2093 const char *name = "", *path, *id;
2094 dbus_bool_t cleanup = FALSE;
2095 DBusMessageIter iter, sub;
2096 const char
2097 *interface = "org.freedesktop.systemd1.Unit",
2098 *property = "Id";
2099
2100 dbus_error_init(&error);
2101
2102 if (!(m = dbus_message_new_method_call(
2103 "org.freedesktop.systemd1",
2104 "/org/freedesktop/systemd1",
2105 "org.freedesktop.systemd1.Manager",
2106 "CreateSnapshot"))) {
2107 log_error("Could not allocate message.");
2108 return -ENOMEM;
2109 }
2110
2111 if (n > 1)
2112 name = args[1];
2113
2114 if (!dbus_message_append_args(m,
2115 DBUS_TYPE_STRING, &name,
2116 DBUS_TYPE_BOOLEAN, &cleanup,
2117 DBUS_TYPE_INVALID)) {
2118 log_error("Could not append arguments to message.");
2119 r = -ENOMEM;
2120 goto finish;
2121 }
2122
2123 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2124 log_error("Failed to issue method call: %s", error.message);
2125 r = -EIO;
2126 goto finish;
2127 }
2128
2129 if (!dbus_message_get_args(reply, &error,
2130 DBUS_TYPE_OBJECT_PATH, &path,
2131 DBUS_TYPE_INVALID)) {
2132 log_error("Failed to parse reply: %s", error.message);
2133 r = -EIO;
2134 goto finish;
2135 }
2136
2137 dbus_message_unref(m);
2138 if (!(m = dbus_message_new_method_call(
2139 "org.freedesktop.systemd1",
2140 path,
2141 "org.freedesktop.DBus.Properties",
2142 "Get"))) {
2143 log_error("Could not allocate message.");
2144 return -ENOMEM;
2145 }
2146
2147 if (!dbus_message_append_args(m,
2148 DBUS_TYPE_STRING, &interface,
2149 DBUS_TYPE_STRING, &property,
2150 DBUS_TYPE_INVALID)) {
2151 log_error("Could not append arguments to message.");
2152 r = -ENOMEM;
2153 goto finish;
2154 }
2155
2156 dbus_message_unref(reply);
2157 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2158 log_error("Failed to issue method call: %s", error.message);
2159 r = -EIO;
2160 goto finish;
2161 }
2162
2163 if (!dbus_message_iter_init(reply, &iter) ||
2164 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
2165 log_error("Failed to parse reply.");
2166 r = -EIO;
2167 goto finish;
2168 }
2169
2170 dbus_message_iter_recurse(&iter, &sub);
2171
2172 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
2173 log_error("Failed to parse reply.");
2174 r = -EIO;
2175 goto finish;
2176 }
2177
2178 dbus_message_iter_get_basic(&sub, &id);
0183528f
LP		 2179
2180 if (!arg_quiet)
2181 puts(id);
7e4249b9
LP		 2182 r = 0;
2183
2184finish:
2185 if (m)
2186 dbus_message_unref(m);
2187
2188 if (reply)
2189 dbus_message_unref(reply);
2190
2191 dbus_error_free(&error);
2192
2193 return r;
2194}
2195
6759e7a7
LP		 2196static int delete_snapshot(DBusConnection *bus, char **args, unsigned n) {
2197 DBusMessage *m = NULL, *reply = NULL;
2198 int r;
2199 DBusError error;
2200 unsigned i;
2201
2202 assert(bus);
2203 assert(args);
2204
2205 dbus_error_init(&error);
2206
2207 for (i = 1; i < n; i++) {
2208 const char *path = NULL;
2209
2210 if (!(m = dbus_message_new_method_call(
2211 "org.freedesktop.systemd1",
2212 "/org/freedesktop/systemd1",
2213 "org.freedesktop.systemd1.Manager",
2214 "GetUnit"))) {
2215 log_error("Could not allocate message.");
2216 r = -ENOMEM;
2217 goto finish;
2218 }
2219
2220 if (!dbus_message_append_args(m,
2221 DBUS_TYPE_STRING, &args[i],
2222 DBUS_TYPE_INVALID)) {
2223 log_error("Could not append arguments to message.");
2224 r = -ENOMEM;
2225 goto finish;
2226 }
2227
2228 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2229 log_error("Failed to issue method call: %s", error.message);
2230 r = -EIO;
2231 goto finish;
2232 }
2233
2234 if (!dbus_message_get_args(reply, &error,
2235 DBUS_TYPE_OBJECT_PATH, &path,
2236 DBUS_TYPE_INVALID)) {
2237 log_error("Failed to parse reply: %s", error.message);
2238 r = -EIO;
2239 goto finish;
2240 }
2241
2242 dbus_message_unref(m);
2243 if (!(m = dbus_message_new_method_call(
2244 "org.freedesktop.systemd1",
2245 path,
2246 "org.freedesktop.systemd1.Snapshot",
2247 "Remove"))) {
2248 log_error("Could not allocate message.");
2249 r = -ENOMEM;
2250 goto finish;
2251 }
2252
2253 dbus_message_unref(reply);
2254 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2255 log_error("Failed to issue method call: %s", error.message);
2256 r = -EIO;
2257 goto finish;
2258 }
2259
2260 dbus_message_unref(m);
2261 dbus_message_unref(reply);
2262 m = reply = NULL;
2263 }
2264
2265 r = 0;
2266
2267finish:
2268 if (m)
2269 dbus_message_unref(m);
2270
2271 if (reply)
2272 dbus_message_unref(reply);
2273
2274 dbus_error_free(&error);
2275
2276 return r;
2277}
2278
7e4249b9
LP		 2279static int clear_jobs(DBusConnection *bus, char **args, unsigned n) {
2280 DBusMessage *m = NULL, *reply = NULL;
2281 DBusError error;
2282 int r;
2283 const char *method;
2284
2285 dbus_error_init(&error);
2286
e4b61340
LP		 2287 if (arg_action == ACTION_RELOAD)
2288 method = "Reload";
2289 else if (arg_action == ACTION_REEXEC)
2290 method = "Reexecute";
2291 else {
2292 assert(arg_action == ACTION_SYSTEMCTL);
2293
2294 method =
2295 streq(args[0], "clear-jobs") ? "ClearJobs" :
2296 streq(args[0], "daemon-reload") ? "Reload" :
2297 streq(args[0], "daemon-reexec") ? "Reexecute" :
2298 "Exit";
2299 }
7e4249b9
LP		 2300
2301 if (!(m = dbus_message_new_method_call(
2302 "org.freedesktop.systemd1",
2303 "/org/freedesktop/systemd1",
2304 "org.freedesktop.systemd1.Manager",
2305 method))) {
2306 log_error("Could not allocate message.");
2307 return -ENOMEM;
2308 }
2309
2310 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
e4b61340
LP		 2311
2312 if (arg_action != ACTION_SYSTEMCTL && error_is_no_service(&error)) {
2313 /* There's always a fallback possible for
2314 * legacy actions. */
2315 r = 0;
2316 goto finish;
2317 }
2318
7e4249b9
LP		 2319 log_error("Failed to issue method call: %s", error.message);
2320 r = -EIO;
2321 goto finish;
2322 }
2323
e4b61340 2324 r = 1;
7e4249b9
LP		 2325
2326finish:
2327 if (m)
2328 dbus_message_unref(m);
2329
2330 if (reply)
2331 dbus_message_unref(reply);
2332
2333 dbus_error_free(&error);
2334
2335 return r;
2336}
2337
2338static int show_enviroment(DBusConnection *bus, char **args, unsigned n) {
2339 DBusMessage *m = NULL, *reply = NULL;
2340 DBusError error;
2341 DBusMessageIter iter, sub, sub2;
2342 int r;
2343 const char
2344 *interface = "org.freedesktop.systemd1.Manager",
2345 *property = "Environment";
2346
2347 dbus_error_init(&error);
2348
2349 if (!(m = dbus_message_new_method_call(
2350 "org.freedesktop.systemd1",
2351 "/org/freedesktop/systemd1",
2352 "org.freedesktop.DBus.Properties",
2353 "Get"))) {
2354 log_error("Could not allocate message.");
2355 return -ENOMEM;
2356 }
2357
2358 if (!dbus_message_append_args(m,
2359 DBUS_TYPE_STRING, &interface,
2360 DBUS_TYPE_STRING, &property,
2361 DBUS_TYPE_INVALID)) {
2362 log_error("Could not append arguments to message.");
2363 r = -ENOMEM;
2364 goto finish;
2365 }
2366
2367 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2368 log_error("Failed to issue method call: %s", error.message);
2369 r = -EIO;
2370 goto finish;
2371 }
2372
2373 if (!dbus_message_iter_init(reply, &iter) ||
2374 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
2375 log_error("Failed to parse reply.");
2376 r = -EIO;
2377 goto finish;
2378 }
2379
2380 dbus_message_iter_recurse(&iter, &sub);
2381
2382 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_ARRAY ||
2383 dbus_message_iter_get_element_type(&sub) != DBUS_TYPE_STRING) {
2384 log_error("Failed to parse reply.");
2385 r = -EIO;
2386 goto finish;
2387 }
2388
2389 dbus_message_iter_recurse(&sub, &sub2);
2390
2391 while (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_INVALID) {
2392 const char *text;
2393
2394 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_STRING) {
2395 log_error("Failed to parse reply.");
2396 r = -EIO;
2397 goto finish;
2398 }
2399
2400 dbus_message_iter_get_basic(&sub2, &text);
2401 printf("%s\n", text);
2402
2403 dbus_message_iter_next(&sub2);
2404 }
2405
2406 r = 0;
2407
2408finish:
2409 if (m)
2410 dbus_message_unref(m);
2411
2412 if (reply)
2413 dbus_message_unref(reply);
2414
2415 dbus_error_free(&error);
2416
2417 return r;
2418}
2419
2420static int set_environment(DBusConnection *bus, char **args, unsigned n) {
2421 DBusMessage *m = NULL, *reply = NULL;
2422 DBusError error;
2423 int r;
2424 const char *method;
2425 DBusMessageIter iter, sub;
2426 unsigned i;
2427
2428 dbus_error_init(&error);
2429
2430 method = streq(args[0], "set-environment")
2431 ? "SetEnvironment"
2432 : "UnsetEnvironment";
2433
2434 if (!(m = dbus_message_new_method_call(
2435 "org.freedesktop.systemd1",
2436 "/org/freedesktop/systemd1",
2437 "org.freedesktop.systemd1.Manager",
2438 method))) {
2439
2440 log_error("Could not allocate message.");
2441 return -ENOMEM;
2442 }
2443
2444 dbus_message_iter_init_append(m, &iter);
2445
2446 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "s", &sub)) {
2447 log_error("Could not append arguments to message.");
2448 r = -ENOMEM;
2449 goto finish;
2450 }
2451
2452 for (i = 1; i < n; i++)
2453 if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &args[i])) {
2454 log_error("Could not append arguments to message.");
2455 r = -ENOMEM;
2456 goto finish;
2457 }
2458
2459 if (!dbus_message_iter_close_container(&iter, &sub)) {
2460 log_error("Could not append arguments to message.");
2461 r = -ENOMEM;
2462 goto finish;
2463 }
2464
2465 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2466 log_error("Failed to issue method call: %s", error.message);
2467 r = -EIO;
2468 goto finish;
2469 }
2470
2471 r = 0;
2472
2473finish:
2474 if (m)
2475 dbus_message_unref(m);
2476
2477 if (reply)
2478 dbus_message_unref(reply);
2479
2480 dbus_error_free(&error);
2481
2482 return r;
2483}
2484
e4b61340 2485static int systemctl_help(void) {
7e4249b9 2486
2e33c433 2487 printf("%s [OPTIONS...] {COMMAND} ...\n\n"
5ec7ed4e 2488 "Send control commands to the systemd manager.\n\n"
48220598
LP		 2489 " -h --help Show this help\n"
2490 " -t --type=TYPE List only units of a particular type\n"
393a2f9b 2491 " -p --property=NAME Show only properties by this name\n"
48220598
LP		 2492 " -a --all Show all units/properties, including dead/empty ones\n"
2493 " --replace When installing a new job, replace existing conflicting ones\n"
2494 " --system Connect to system bus\n"
2495 " --session Connect to session bus\n"
2496 " -q --quiet Suppress output\n"
2497 " --no-block Do not wait until operation finished\n"
2498 " --no-wall Don't send wall message before halt/power-off/reboot\n\n"
7e4249b9
LP		 2499 "Commands:\n"
2500 " list-units List units\n"
7e4249b9
LP		 2501 " start [NAME...] Start one or more units\n"
2502 " stop [NAME...] Stop one or more units\n"
2503 " restart [NAME...] Restart one or more units\n"
2504 " reload [NAME...] Reload one or more units\n"
2505 " isolate [NAME] Start one unit and stop all others\n"
0183528f 2506 " check [NAME...] Check whether any of the passed units are active\n"
61cbdc4b
LP		 2507 " status [NAME...] Show status of one or more units\n"
2508 " show [NAME...|JOB...] Show properties of one or more units/jobs/manager\n"
48220598
LP		 2509 " load [NAME...] Load one or more units\n"
2510 " list-jobs List jobs\n"
2511 " cancel [JOB...] Cancel one or more jobs\n"
2512 " clear-jobs Cancel all jobs\n"
7e4249b9
LP		 2513 " monitor Monitor unit/job changes\n"
2514 " dump Dump server status\n"
2515 " snapshot [NAME] Create a snapshot\n"
6759e7a7 2516 " delete [NAME...] Remove one or more snapshots\n"
5ec7ed4e
LP		 2517 " daemon-reload Reload systemd manager configuration\n"
2518 " daemon-reexec Reexecute systemd manager\n"
2519 " daemon-exit Ask the systemd manager to quit\n"
7e4249b9
LP		 2520 " show-environment Dump environment\n"
2521 " set-environment [NAME=VALUE...] Set one or more environment variables\n"
514f4ef5
LP		 2522 " unset-environment [NAME...] Unset one or more environment variables\n"
2523 " halt Shut down and halt the system\n"
2e33c433 2524 " poweroff Shut down and power-off the system\n"
514f4ef5 2525 " reboot Shut down and reboot the system\n"
514f4ef5
LP		 2526 " default Enter default mode\n"
2527 " rescue Enter rescue mode\n"
2528 " emergency Enter emergency mode\n",
5b6319dc 2529 program_invocation_short_name);
7e4249b9
LP		 2530
2531 return 0;
2532}
2533
e4b61340
LP		 2534static int halt_help(void) {
2535
2e33c433 2536 printf("%s [OPTIONS...]\n\n"
e4b61340
LP		 2537 "%s the system.\n\n"
2538 " --help Show this help\n"
2539 " --halt Halt the machine\n"
2540 " -p --poweroff Switch off the machine\n"
2541 " --reboot Reboot the machine\n"
2e33c433
LP		 2542 " -f --force Force immediate halt/power-off/reboot\n"
2543 " -w --wtmp-only Don't halt/power-off/reboot, just write wtmp record\n"
e4b61340 2544 " -d --no-wtmp Don't write wtmp record\n"
2e33c433
LP		 2545 " -n --no-sync Don't sync before halt/power-off/reboot\n"
2546 " --no-wall Don't send wall message before halt/power-off/reboot\n",
e4b61340
LP		 2547 program_invocation_short_name,
2548 arg_action == ACTION_REBOOT ? "Reboot" :
2549 arg_action == ACTION_POWEROFF ? "Power off" :
2550 "Halt");
2551
2552 return 0;
2553}
2554
2555static int shutdown_help(void) {
2556
2e33c433 2557 printf("%s [OPTIONS...] [now] [WALL...]\n\n"
e4b61340
LP		 2558 "Shut down the system.\n\n"
2559 " --help Show this help\n"
2560 " -H --halt Halt the machine\n"
2561 " -P --poweroff Power-off the machine\n"
2562 " -r --reboot Reboot the machine\n"
2563 " -h Equivalent to --poweroff, overriden by --halt\n"
2e33c433
LP		 2564 " -k Don't halt/power-off/reboot, just send warnings\n"
2565 " --no-wall Don't send wall message before halt/power-off/reboot\n",
e4b61340
LP		 2566 program_invocation_short_name);
2567
2568 return 0;
2569}
2570
2571static int telinit_help(void) {
2572
2e33c433 2573 printf("%s [OPTIONS...] {COMMAND}\n\n"
514f4ef5
LP		 2574 "Send control commands to the init daemon.\n\n"
2575 " --help Show this help\n"
2e33c433 2576 " --no-wall Don't send wall message before halt/power-off/reboot\n\n"
e4b61340
LP		 2577 "Commands:\n"
2578 " 0 Power-off the machine\n"
2579 " 6 Reboot the machine\n"
514f4ef5
LP		 2580 " 2, 3, 4, 5 Start runlevelX.target unit\n"
2581 " 1, s, S Enter rescue mode\n"
2582 " q, Q Reload init daemon configuration\n"
2583 " u, U Reexecute init daemon\n",
e4b61340
LP		 2584 program_invocation_short_name);
2585
2586 return 0;
2587}
2588
2589static int runlevel_help(void) {
2590
2e33c433 2591 printf("%s [OPTIONS...]\n\n"
e4b61340
LP		 2592 "Prints the previous and current runlevel of the init system.\n\n"
2593 " --help Show this help\n",
2594 program_invocation_short_name);
2595
2596 return 0;
2597}
2598
2599static int systemctl_parse_argv(int argc, char *argv[]) {
7e4249b9
LP		 2600
2601 enum {
2602 ARG_REPLACE = 0x100,
2603 ARG_SESSION,
2604 ARG_SYSTEM,
6e905d93 2605 ARG_NO_BLOCK,
514f4ef5 2606 ARG_NO_WALL
7e4249b9
LP		 2607 };
2608
2609 static const struct option options[] = {
6e905d93
LP		 2610 { "help", no_argument, NULL, 'h' },
2611 { "type", required_argument, NULL, 't' },
48220598 2612 { "property", required_argument, NULL, 'p' },
6e905d93
LP		 2613 { "all", no_argument, NULL, 'a' },
2614 { "replace", no_argument, NULL, ARG_REPLACE },
2615 { "session", no_argument, NULL, ARG_SESSION },
2616 { "system", no_argument, NULL, ARG_SYSTEM },
2617 { "no-block", no_argument, NULL, ARG_NO_BLOCK },
2618 { "no-wall", no_argument, NULL, ARG_NO_WALL },
0183528f 2619 { "quiet", no_argument, NULL, 'q' },
6e905d93 2620 { NULL, 0, NULL, 0 }
7e4249b9
LP		 2621 };
2622
2623 int c;
2624
e4b61340 2625 assert(argc >= 0);
7e4249b9
LP		 2626 assert(argv);
2627
48220598 2628 while ((c = getopt_long(argc, argv, "ht:p:aq", options, NULL)) >= 0) {
7e4249b9
LP		 2629
2630 switch (c) {
2631
2632 case 'h':
e4b61340 2633 systemctl_help();
7e4249b9
LP		 2634 return 0;
2635
2636 case 't':
2637 arg_type = optarg;
2638 break;
2639
48220598
LP		 2640 case 'p':
2641 arg_property = optarg;
2642
2643 /* If the user asked for a particular
2644 * property, show it to him, even if it is
2645 * empty. */
2646 arg_all = true;
2647 break;
2648
7e4249b9
LP		 2649 case 'a':
2650 arg_all = true;
2651 break;
2652
2653 case ARG_REPLACE:
2654 arg_replace = true;
2655 break;
2656
2657 case ARG_SESSION:
2658 arg_session = true;
2659 break;
2660
2661 case ARG_SYSTEM:
2662 arg_session = false;
2663 break;
2664
6e905d93
LP		 2665 case ARG_NO_BLOCK:
2666 arg_no_block = true;
7e4249b9
LP		 2667 break;
2668
514f4ef5
LP		 2669 case ARG_NO_WALL:
2670 arg_no_wall = true;
2671 break;
2672
0183528f
LP		 2673 case 'q':
2674 arg_quiet = true;
2675 break;
2676
7e4249b9
LP		 2677 case '?':
2678 return -EINVAL;
2679
2680 default:
2681 log_error("Unknown option code %c", c);
2682 return -EINVAL;
2683 }
2684 }
2685
2686 return 1;
2687}
2688
e4b61340
LP		 2689static int halt_parse_argv(int argc, char *argv[]) {
2690
2691 enum {
2692 ARG_HELP = 0x100,
2693 ARG_HALT,
514f4ef5
LP		 2694 ARG_REBOOT,
2695 ARG_NO_WALL
e4b61340
LP		 2696 };
2697
2698 static const struct option options[] = {
2699 { "help", no_argument, NULL, ARG_HELP },
2700 { "halt", no_argument, NULL, ARG_HALT },
2701 { "poweroff", no_argument, NULL, 'p' },
2702 { "reboot", no_argument, NULL, ARG_REBOOT },
2703 { "force", no_argument, NULL, 'f' },
2704 { "wtmp-only", no_argument, NULL, 'w' },
2705 { "no-wtmp", no_argument, NULL, 'd' },
2706 { "no-sync", no_argument, NULL, 'n' },
514f4ef5 2707 { "no-wall", no_argument, NULL, ARG_NO_WALL },
e4b61340
LP		 2708 { NULL, 0, NULL, 0 }
2709 };
2710
2711 int c, runlevel;
2712
2713 assert(argc >= 0);
2714 assert(argv);
2715
2716 if (utmp_get_runlevel(&runlevel, NULL) >= 0)
2717 if (runlevel == '0' || runlevel == '6')
2718 arg_immediate = true;
2719
2720 while ((c = getopt_long(argc, argv, "pfwdnih", options, NULL)) >= 0) {
2721 switch (c) {
2722
2723 case ARG_HELP:
2724 halt_help();
2725 return 0;
2726
2727 case ARG_HALT:
2728 arg_action = ACTION_HALT;
2729 break;
2730
2731 case 'p':
2732 arg_action = ACTION_POWEROFF;
2733 break;
2734
2735 case ARG_REBOOT:
2736 arg_action = ACTION_REBOOT;
2737 break;
2738
2739 case 'f':
2740 arg_immediate = true;
2741 break;
2742
2743 case 'w':
2744 arg_dry = true;
2745 break;
2746
2747 case 'd':
2748 arg_no_wtmp = true;
2749 break;
2750
2751 case 'n':
2752 arg_no_sync = true;
2753 break;
2754
514f4ef5
LP		 2755 case ARG_NO_WALL:
2756 arg_no_wall = true;
2757 break;
2758
e4b61340
LP		 2759 case 'i':
2760 case 'h':
2761 /* Compatibility nops */
2762 break;
2763
2764 case '?':
2765 return -EINVAL;
2766
2767 default:
2768 log_error("Unknown option code %c", c);
2769 return -EINVAL;
2770 }
2771 }
2772
2773 if (optind < argc) {
2774 log_error("Too many arguments.");
2775 return -EINVAL;
2776 }
2777
2778 return 1;
2779}
2780
2781static int shutdown_parse_argv(int argc, char *argv[]) {
2782
2783 enum {
2784 ARG_HELP = 0x100,
514f4ef5 2785 ARG_NO_WALL
e4b61340
LP		 2786 };
2787
2788 static const struct option options[] = {
2789 { "help", no_argument, NULL, ARG_HELP },
2790 { "halt", no_argument, NULL, 'H' },
2791 { "poweroff", no_argument, NULL, 'P' },
2792 { "reboot", no_argument, NULL, 'r' },
514f4ef5 2793 { "no-wall", no_argument, NULL, ARG_NO_WALL },
e4b61340
LP		 2794 { NULL, 0, NULL, 0 }
2795 };
2796
2797 int c;
2798
2799 assert(argc >= 0);
2800 assert(argv);
2801
2802 while ((c = getopt_long(argc, argv, "HPrhkt:a", options, NULL)) >= 0) {
2803 switch (c) {
2804
2805 case ARG_HELP:
2806 shutdown_help();
2807 return 0;
2808
2809 case 'H':
2810 arg_action = ACTION_HALT;
2811 break;
2812
2813 case 'P':
2814 arg_action = ACTION_POWEROFF;
2815 break;
2816
2817 case 'r':
2818 arg_action = ACTION_REBOOT;
2819 break;
2820
2821 case 'h':
2822 if (arg_action != ACTION_HALT)
2823 arg_action = ACTION_POWEROFF;
2824 break;
2825
2826 case 'k':
2827 arg_dry = true;
2828 break;
2829
514f4ef5
LP		 2830 case ARG_NO_WALL:
2831 arg_no_wall = true;
2832 break;
2833
e4b61340
LP		 2834 case 't':
2835 case 'a':
2836 /* Compatibility nops */
2837 break;
2838
2839 case '?':
2840 return -EINVAL;
2841
2842 default:
2843 log_error("Unknown option code %c", c);
2844 return -EINVAL;
2845 }
2846 }
2847
4545812f
LP		 2848 if (argc > optind && !streq(argv[optind], "now"))
2849 log_warning("First argument '%s' isn't 'now'. Ignoring.", argv[optind]);
442b9094 2850
e4b61340
LP		 2851 /* We ignore the time argument */
2852 if (argc > optind + 1)
2853 arg_wall = argv + optind + 1;
2854
2855 optind = argc;
2856
2857 return 1;
e4b61340
LP		 2858}
2859
2860static int telinit_parse_argv(int argc, char *argv[]) {
2861
2862 enum {
2863 ARG_HELP = 0x100,
514f4ef5 2864 ARG_NO_WALL
e4b61340
LP		 2865 };
2866
2867 static const struct option options[] = {
2868 { "help", no_argument, NULL, ARG_HELP },
514f4ef5 2869 { "no-wall", no_argument, NULL, ARG_NO_WALL },
e4b61340
LP		 2870 { NULL, 0, NULL, 0 }
2871 };
2872
2873 static const struct {
2874 char from;
2875 enum action to;
2876 } table[] = {
2877 { '0', ACTION_POWEROFF },
2878 { '6', ACTION_REBOOT },
ef2f1067 2879 { '1', ACTION_RESCUE },
e4b61340
LP		 2880 { '2', ACTION_RUNLEVEL2 },
2881 { '3', ACTION_RUNLEVEL3 },
2882 { '4', ACTION_RUNLEVEL4 },
2883 { '5', ACTION_RUNLEVEL5 },
2884 { 's', ACTION_RESCUE },
2885 { 'S', ACTION_RESCUE },
2886 { 'q', ACTION_RELOAD },
2887 { 'Q', ACTION_RELOAD },
2888 { 'u', ACTION_REEXEC },
2889 { 'U', ACTION_REEXEC }
2890 };
2891
2892 unsigned i;
2893 int c;
2894
2895 assert(argc >= 0);
2896 assert(argv);
2897
2898 while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) {
2899 switch (c) {
2900
2901 case ARG_HELP:
2902 telinit_help();
2903 return 0;
2904
514f4ef5
LP		 2905 case ARG_NO_WALL:
2906 arg_no_wall = true;
2907 break;
2908
e4b61340
LP		 2909 case '?':
2910 return -EINVAL;
2911
2912 default:
2913 log_error("Unknown option code %c", c);
2914 return -EINVAL;
2915 }
2916 }
2917
2918 if (optind >= argc) {
2f02ce40 2919 telinit_help();
e4b61340
LP		 2920 return -EINVAL;
2921 }
2922
2923 if (optind + 1 < argc) {
2924 log_error("Too many arguments.");
2925 return -EINVAL;
2926 }
2927
2928 if (strlen(argv[optind]) != 1) {
2929 log_error("Expected single character argument.");
2930 return -EINVAL;
2931 }
2932
2933 for (i = 0; i < ELEMENTSOF(table); i++)
2934 if (table[i].from == argv[optind][0])
2935 break;
2936
2937 if (i >= ELEMENTSOF(table)) {
2938 log_error("Unknown command %s.", argv[optind]);
2939 return -EINVAL;
2940 }
2941
2942 arg_action = table[i].to;
2943
2944 optind ++;
2945
2946 return 1;
2947}
2948
2949static int runlevel_parse_argv(int argc, char *argv[]) {
2950
2951 enum {
2952 ARG_HELP = 0x100,
2953 };
2954
2955 static const struct option options[] = {
2956 { "help", no_argument, NULL, ARG_HELP },
2957 { NULL, 0, NULL, 0 }
2958 };
2959
2960 int c;
2961
2962 assert(argc >= 0);
2963 assert(argv);
2964
2965 while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) {
2966 switch (c) {
2967
2968 case ARG_HELP:
2969 runlevel_help();
2970 return 0;
2971
2972 case '?':
2973 return -EINVAL;
2974
2975 default:
2976 log_error("Unknown option code %c", c);
2977 return -EINVAL;
2978 }
2979 }
2980
2981 if (optind < argc) {
2982 log_error("Too many arguments.");
2983 return -EINVAL;
2984 }
2985
2986 return 1;
2987}
2988
2989static int parse_argv(int argc, char *argv[]) {
2990 assert(argc >= 0);
2991 assert(argv);
2992
2993 if (program_invocation_short_name) {
2994
2995 if (strstr(program_invocation_short_name, "halt")) {
2996 arg_action = ACTION_HALT;
2997 return halt_parse_argv(argc, argv);
2998 } else if (strstr(program_invocation_short_name, "poweroff")) {
2999 arg_action = ACTION_POWEROFF;
3000 return halt_parse_argv(argc, argv);
3001 } else if (strstr(program_invocation_short_name, "reboot")) {
3002 arg_action = ACTION_REBOOT;
3003 return halt_parse_argv(argc, argv);
3004 } else if (strstr(program_invocation_short_name, "shutdown")) {
3005 arg_action = ACTION_POWEROFF;
3006 return shutdown_parse_argv(argc, argv);
3007 } else if (strstr(program_invocation_short_name, "init")) {
3008 arg_action = ACTION_INVALID;
3009 return telinit_parse_argv(argc, argv);
3010 } else if (strstr(program_invocation_short_name, "runlevel")) {
3011 arg_action = ACTION_RUNLEVEL;
3012 return runlevel_parse_argv(argc, argv);
3013 }
3014 }
3015
3016 arg_action = ACTION_SYSTEMCTL;
3017 return systemctl_parse_argv(argc, argv);
3018}
3019
d55ae9e6 3020static int action_to_runlevel(void) {
eb22ac37
LP		 3021
3022 static const char table[_ACTION_MAX] = {
3023 [ACTION_HALT] = '0',
3024 [ACTION_POWEROFF] = '0',
3025 [ACTION_REBOOT] = '6',
3026 [ACTION_RUNLEVEL2] = '2',
3027 [ACTION_RUNLEVEL3] = '3',
3028 [ACTION_RUNLEVEL4] = '4',
3029 [ACTION_RUNLEVEL5] = '5',
3030 [ACTION_RESCUE] = '1'
3031 };
3032
d55ae9e6
LP		 3033 assert(arg_action < _ACTION_MAX);
3034
3035 return table[arg_action];
3036}
3037
f1c5860b 3038static int talk_upstart(void) {
d55ae9e6
LP		 3039 DBusMessage *m = NULL, *reply = NULL;
3040 DBusError error;
3041 int previous, rl, r;
3042 char
3043 env1_buf[] = "RUNLEVEL=X",
3044 env2_buf[] = "PREVLEVEL=X";
3045 char *env1 = env1_buf, *env2 = env2_buf;
3046 const char *emit = "runlevel";
3047 dbus_bool_t b_false = FALSE;
3048 DBusMessageIter iter, sub;
f1c5860b 3049 DBusConnection *bus;
d55ae9e6
LP		 3050
3051 dbus_error_init(&error);
3052
3053 if (!(rl = action_to_runlevel()))
3054 return 0;
3055
3056 if (utmp_get_runlevel(&previous, NULL) < 0)
3057 previous = 'N';
3058
f1c5860b
LP		 3059 if (!(bus = dbus_connection_open("unix:abstract=/com/ubuntu/upstart", &error))) {
3060 if (dbus_error_has_name(&error, DBUS_ERROR_NO_SERVER)) {
3061 r = 0;
3062 goto finish;
3063 }
3064
3065 log_error("Failed to connect to Upstart bus: %s", error.message);
3066 r = -EIO;
3067 goto finish;
3068 }
3069
3070 if ((r = bus_check_peercred(bus)) < 0) {
3071 log_error("Failed to verify owner of bus.");
3072 goto finish;
3073 }
3074
d55ae9e6
LP		 3075 if (!(m = dbus_message_new_method_call(
3076 "com.ubuntu.Upstart",
3077 "/com/ubuntu/Upstart",
3078 "com.ubuntu.Upstart0_6",
3079 "EmitEvent"))) {
3080
3081 log_error("Could not allocate message.");
f1c5860b
LP		 3082 r = -ENOMEM;
3083 goto finish;
d55ae9e6
LP		 3084 }
3085
3086 dbus_message_iter_init_append(m, &iter);
3087
3088 env1_buf[sizeof(env1_buf)-2] = rl;
3089 env2_buf[sizeof(env2_buf)-2] = previous;
3090
3091 if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &emit) ||
3092 !dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "s", &sub) ||
3093 !dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &env1) ||
3094 !dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &env2) ||
3095 !dbus_message_iter_close_container(&iter, &sub) ||
3096 !dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &b_false)) {
3097 log_error("Could not append arguments to message.");
3098 r = -ENOMEM;
3099 goto finish;
3100 }
3101
3102 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3103
3104 if (error_is_no_service(&error)) {
3105 r = 0;
3106 goto finish;
3107 }
3108
3109 log_error("Failed to issue method call: %s", error.message);
3110 r = -EIO;
3111 goto finish;
3112 }
3113
3114 r = 1;
3115
3116finish:
3117 if (m)
3118 dbus_message_unref(m);
3119
3120 if (reply)
3121 dbus_message_unref(reply);
3122
f1c5860b
LP		 3123 if (bus)
3124 dbus_connection_unref(bus);
3125
d55ae9e6
LP		 3126 dbus_error_free(&error);
3127
3128 return r;
3129}
3130
3131static int talk_initctl(void) {
eb22ac37
LP		 3132 struct init_request request;
3133 int r, fd;
d55ae9e6 3134 char rl;
eb22ac37 3135
d55ae9e6 3136 if (!(rl = action_to_runlevel()))
eb22ac37
LP		 3137 return 0;
3138
3139 zero(request);
3140 request.magic = INIT_MAGIC;
3141 request.sleeptime = 0;
3142 request.cmd = INIT_CMD_RUNLVL;
d55ae9e6
LP		 3143 request.runlevel = rl;
3144
3145 if ((fd = open(INIT_FIFO, O_WRONLY|O_NDELAY|O_CLOEXEC|O_NOCTTY)) < 0) {
3146
3147 if (errno == ENOENT)
3148 return 0;
eb22ac37 3149
d55ae9e6 3150 log_error("Failed to open "INIT_FIFO": %m");
eb22ac37 3151 return -errno;
d55ae9e6 3152 }
eb22ac37 3153
d55ae9e6 3154 errno = 0;
eb22ac37
LP		 3155 r = loop_write(fd, &request, sizeof(request), false) != sizeof(request);
3156 close_nointr_nofail(fd);
3157
d55ae9e6
LP		 3158 if (r < 0) {
3159 log_error("Failed to write to "INIT_FIFO": %m");
eb22ac37 3160 return errno ? -errno : -EIO;
d55ae9e6 3161 }
eb22ac37
LP		 3162
3163 return 1;
e4b61340
LP		 3164}
3165
3166static int systemctl_main(DBusConnection *bus, int argc, char *argv[]) {
7e4249b9 3167
7e4249b9
LP		 3168 static const struct {
3169 const char* verb;
3170 const enum {
3171 MORE,
3172 LESS,
3173 EQUAL
3174 } argc_cmp;
3175 const int argc;
3176 int (* const dispatch)(DBusConnection *bus, char **args, unsigned n);
3177 } verbs[] = {
3178 { "list-units", LESS, 1, list_units },
3179 { "list-jobs", EQUAL, 1, list_jobs },
3180 { "clear-jobs", EQUAL, 1, clear_jobs },
3181 { "load", MORE, 2, load_unit },
3182 { "cancel", MORE, 2, cancel_job },
3183 { "start", MORE, 2, start_unit },
3184 { "stop", MORE, 2, start_unit },
3185 { "reload", MORE, 2, start_unit },
3186 { "restart", MORE, 2, start_unit },
e4b61340 3187 { "isolate", EQUAL, 2, start_unit },
0183528f 3188 { "check", MORE, 2, check_unit },
48220598 3189 { "show", MORE, 1, show },
61cbdc4b 3190 { "status", MORE, 2, show },
7e4249b9
LP		 3191 { "monitor", EQUAL, 1, monitor },
3192 { "dump", EQUAL, 1, dump },
3193 { "snapshot", LESS, 2, snapshot },
6759e7a7 3194 { "delete", MORE, 2, delete_snapshot },
7e4249b9
LP		 3195 { "daemon-reload", EQUAL, 1, clear_jobs },
3196 { "daemon-reexec", EQUAL, 1, clear_jobs },
3197 { "daemon-exit", EQUAL, 1, clear_jobs },
3198 { "show-environment", EQUAL, 1, show_enviroment },
3199 { "set-environment", MORE, 2, set_environment },
3200 { "unset-environment", MORE, 2, set_environment },
514f4ef5
LP		 3201 { "halt", EQUAL, 1, start_special },
3202 { "poweroff", EQUAL, 1, start_special },
3203 { "reboot", EQUAL, 1, start_special },
3204 { "default", EQUAL, 1, start_special },
3205 { "rescue", EQUAL, 1, start_special },
fa776d8e 3206 { "emergency", EQUAL, 1, start_special }
7e4249b9
LP		 3207 };
3208
e4b61340 3209 int left;
7e4249b9 3210 unsigned i;
7e4249b9 3211
e4b61340
LP		 3212 assert(bus);
3213 assert(argc >= 0);
3214 assert(argv);
7e4249b9
LP		 3215
3216 left = argc - optind;
3217
3218 if (left <= 0)
3219 /* Special rule: no arguments means "list-units" */
3220 i = 0;
3221 else {
0183528f
LP		 3222 if (streq(argv[optind], "help")) {
3223 systemctl_help();
3224 return 0;
3225 }
3226
7e4249b9
LP		 3227 for (i = 0; i < ELEMENTSOF(verbs); i++)
3228 if (streq(argv[optind], verbs[i].verb))
3229 break;
3230
3231 if (i >= ELEMENTSOF(verbs)) {
3232 log_error("Unknown operation %s", argv[optind]);
e4b61340 3233 return -EINVAL;
7e4249b9
LP		 3234 }
3235 }
3236
3237 switch (verbs[i].argc_cmp) {
3238
3239 case EQUAL:
3240 if (left != verbs[i].argc) {
3241 log_error("Invalid number of arguments.");
e4b61340 3242 return -EINVAL;
7e4249b9
LP		 3243 }
3244
3245 break;
3246
3247 case MORE:
3248 if (left < verbs[i].argc) {
3249 log_error("Too few arguments.");
e4b61340 3250 return -EINVAL;
7e4249b9
LP		 3251 }
3252
3253 break;
3254
3255 case LESS:
3256 if (left > verbs[i].argc) {
3257 log_error("Too many arguments.");
e4b61340 3258 return -EINVAL;
7e4249b9
LP		 3259 }
3260
3261 break;
3262
3263 default:
3264 assert_not_reached("Unknown comparison operator.");
3265 }
3266
e4b61340
LP		 3267 return verbs[i].dispatch(bus, argv + optind, left);
3268}
3269
3270static int reload_with_fallback(DBusConnection *bus) {
3271 int r;
3272
3273 if (bus) {
3274 /* First, try systemd via D-Bus. */
3275 if ((r = clear_jobs(bus, NULL, 0)) > 0)
3276 return 0;
3277 }
3278
3279 /* Nothing else worked, so let's try signals */
3280 assert(arg_action == ACTION_RELOAD || arg_action == ACTION_REEXEC);
3281
3282 if (kill(1, arg_action == ACTION_RELOAD ? SIGHUP : SIGTERM) < 0) {
3283 log_error("kill() failed: %m");
3284 return -errno;
3285 }
3286
3287 return 0;
3288}
3289
3290static int start_with_fallback(DBusConnection *bus) {
3291 int r;
3292
514f4ef5 3293 warn_wall(arg_action);
ef2f1067 3294
e4b61340
LP		 3295 if (bus) {
3296 /* First, try systemd via D-Bus. */
3297 if ((r = start_unit(bus, NULL, 0)) > 0)
3298 return 0;
3299
3300 /* Hmm, talking to systemd via D-Bus didn't work. Then
3301 * let's try to talk to Upstart via D-Bus. */
f1c5860b 3302 if ((r = talk_upstart()) > 0)
e4b61340
LP		 3303 return 0;
3304 }
3305
3306 /* Nothing else worked, so let's try
3307 * /dev/initctl */
d55ae9e6
LP		 3308 if ((r = talk_initctl()) != 0)
3309 return 0;
3310
3311 log_error("Failed to talk to init daemon.");
3312 return -EIO;
e4b61340
LP		 3313}
3314
3315static int halt_main(DBusConnection *bus) {
3316 int r;
3317
bc8c2f5c
LP		 3318 if (geteuid() != 0) {
3319 log_error("Must to be root.");
3320 return -EPERM;
3321 }
3322
d47b555b 3323 if (!arg_dry && !arg_immediate)
e4b61340
LP		 3324 return start_with_fallback(bus);
3325
3326 if (!arg_no_wtmp)
3327 if ((r = utmp_put_shutdown(0)) < 0)
3328 log_warning("Failed to write utmp record: %s", strerror(-r));
3329
3330 if (!arg_no_sync)
3331 sync();
3332
3333 if (arg_dry)
3334 return 0;
3335
3336 /* Make sure C-A-D is handled by the kernel from this
3337 * point on... */
3338 reboot(RB_ENABLE_CAD);
3339
3340 switch (arg_action) {
3341
3342 case ACTION_HALT:
3343 log_info("Halting");
3344 reboot(RB_HALT_SYSTEM);
3345 break;
3346
3347 case ACTION_POWEROFF:
3348 log_info("Powering off");
3349 reboot(RB_POWER_OFF);
3350 break;
3351
3352 case ACTION_REBOOT:
3353 log_info("Rebooting");
3354 reboot(RB_AUTOBOOT);
3355 break;
3356
3357 default:
3358 assert_not_reached("Unknown halt action.");
3359 }
3360
3361 /* We should never reach this. */
3362 return -ENOSYS;
3363}
3364
3365static int runlevel_main(void) {
3366 int r, runlevel, previous;
3367
3368 if ((r = utmp_get_runlevel(&runlevel, &previous)) < 0) {
3369 printf("unknown");
3370 return r;
3371 }
3372
3373 printf("%c %c\n",
3374 previous <= 0 ? 'N' : previous,
3375 runlevel <= 0 ? 'N' : runlevel);
3376
3377 return 0;
3378}
3379
3380int main(int argc, char*argv[]) {
3381 int r, retval = 1;
3382 DBusConnection *bus = NULL;
3383 DBusError error;
3384
3385 dbus_error_init(&error);
3386
3387 log_parse_environment();
3388
3389 if ((r = parse_argv(argc, argv)) < 0)
3390 goto finish;
3391 else if (r == 0) {
3392 retval = 0;
7e4249b9
LP		 3393 goto finish;
3394 }
3395
e4b61340
LP		 3396 /* /sbin/runlevel doesn't need to communicate via D-Bus, so
3397 * let's shortcut this */
3398 if (arg_action == ACTION_RUNLEVEL) {
3399 retval = runlevel_main() < 0;
3400 goto finish;
3401 }
3402
f4579ce7 3403 bus_connect(arg_session ? DBUS_BUS_SESSION : DBUS_BUS_SYSTEM, &bus, &private_bus, &error);
e4b61340
LP		 3404
3405 switch (arg_action) {
3406
3407 case ACTION_SYSTEMCTL: {
3408
3409 if (!bus) {
3410 log_error("Failed to get D-Bus connection: %s", error.message);
3411 goto finish;
3412 }
3413
3414 retval = systemctl_main(bus, argc, argv) < 0;
3415 break;
3416 }
3417
3418 case ACTION_HALT:
3419 case ACTION_POWEROFF:
3420 case ACTION_REBOOT:
3421 retval = halt_main(bus) < 0;
3422 break;
3423
e4b61340
LP		 3424 case ACTION_RUNLEVEL2:
3425 case ACTION_RUNLEVEL3:
3426 case ACTION_RUNLEVEL4:
3427 case ACTION_RUNLEVEL5:
3428 case ACTION_RESCUE:
514f4ef5 3429 case ACTION_EMERGENCY:
eb22ac37 3430 case ACTION_DEFAULT:
e4b61340
LP		 3431 retval = start_with_fallback(bus) < 0;
3432 break;
7e4249b9 3433
e4b61340
LP		 3434 case ACTION_RELOAD:
3435 case ACTION_REEXEC:
3436 retval = reload_with_fallback(bus) < 0;
3437 break;
3438
eb22ac37
LP		 3439 case ACTION_INVALID:
3440 case ACTION_RUNLEVEL:
e4b61340
LP		 3441 default:
3442 assert_not_reached("Unknown action");
3443 }
7e4249b9
LP		 3444
3445finish:
3446
3447 if (bus)
3448 dbus_connection_unref(bus);
3449
e4b61340
LP		 3450 dbus_error_free(&error);
3451
7e4249b9
LP		 3452 dbus_shutdown();
3453
3454 return retval;
3455}
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