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systemctl: drop redundant getenv('LESS') check
[thirdparty/systemd.git] / src / systemctl.c
1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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
22 #include <sys/reboot.h>
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>
31 #include <fcntl.h>
32 #include <sys/socket.h>
33 #include <sys/stat.h>
34 #include <stddef.h>
35 #include <sys/prctl.h>
36
37 #include <dbus/dbus.h>
38
39 #include "log.h"
40 #include "util.h"
41 #include "macro.h"
42 #include "set.h"
43 #include "utmp-wtmp.h"
44 #include "special.h"
45 #include "initreq.h"
46 #include "strv.h"
47 #include "dbus-common.h"
48 #include "cgroup-show.h"
49 #include "cgroup-util.h"
50 #include "list.h"
51 #include "path-lookup.h"
52 #include "conf-parser.h"
53 #include "sd-daemon.h"
54 #include "shutdownd.h"
55 #include "exit-status.h"
56 #include "bus-errors.h"
57 #include "build.h"
58 #include "unit-name.h"
59
60 static const char *arg_type = NULL;
61 static char **arg_property = NULL;
62 static bool arg_all = false;
63 static bool arg_fail = false;
64 static bool arg_user = false;
65 static bool arg_global = false;
66 static bool arg_immediate = false;
67 static bool arg_no_block = false;
68 static bool arg_no_pager = false;
69 static bool arg_no_wtmp = false;
70 static bool arg_no_sync = false;
71 static bool arg_no_wall = false;
72 static bool arg_no_reload = false;
73 static bool arg_dry = false;
74 static bool arg_quiet = false;
75 static bool arg_full = false;
76 static bool arg_force = false;
77 static bool arg_defaults = false;
78 static bool arg_ask_password = false;
79 static char **arg_wall = NULL;
80 static const char *arg_kill_who = NULL;
81 static const char *arg_kill_mode = NULL;
82 static int arg_signal = SIGTERM;
83 static usec_t arg_when = 0;
84 static enum action {
85 ACTION_INVALID,
86 ACTION_SYSTEMCTL,
87 ACTION_HALT,
88 ACTION_POWEROFF,
89 ACTION_REBOOT,
90 ACTION_KEXEC,
91 ACTION_EXIT,
92 ACTION_RUNLEVEL2,
93 ACTION_RUNLEVEL3,
94 ACTION_RUNLEVEL4,
95 ACTION_RUNLEVEL5,
96 ACTION_RESCUE,
97 ACTION_EMERGENCY,
98 ACTION_DEFAULT,
99 ACTION_RELOAD,
100 ACTION_REEXEC,
101 ACTION_RUNLEVEL,
102 ACTION_CANCEL_SHUTDOWN,
103 _ACTION_MAX
104 } arg_action = ACTION_SYSTEMCTL;
105 static enum dot {
106 DOT_ALL,
107 DOT_ORDER,
108 DOT_REQUIRE
109 } arg_dot = DOT_ALL;
110
111 static bool private_bus = false;
112
113 static pid_t pager_pid = 0;
114
115 static int daemon_reload(DBusConnection *bus, char **args, unsigned n);
116 static void pager_open(void);
117
118 static bool on_tty(void) {
119 static int t = -1;
120
121 if (_unlikely_(t < 0))
122 t = isatty(STDOUT_FILENO) > 0;
123
124 return t;
125 }
126
127 static void spawn_ask_password_agent(void) {
128 pid_t parent, child;
129
130 /* We check STDIN here, not STDOUT, since this is about input,
131 * not output */
132 if (!isatty(STDIN_FILENO))
133 return;
134
135 if (!arg_ask_password)
136 return;
137
138 parent = getpid();
139
140 /* Spawns a temporary TTY agent, making sure it goes away when
141 * we go away */
142
143 if ((child = fork()) < 0)
144 return;
145
146 if (child == 0) {
147 /* In the child */
148
149 const char * const args[] = {
150 SYSTEMD_TTY_ASK_PASSWORD_AGENT_BINARY_PATH,
151 "--watch",
152 NULL
153 };
154
155 if (prctl(PR_SET_PDEATHSIG, SIGTERM) < 0)
156 _exit(EXIT_FAILURE);
157
158 /* Check whether our parent died before we were able
159 * to set the death signal */
160 if (getppid() != parent)
161 _exit(EXIT_SUCCESS);
162
163 execv(args[0], (char **) args);
164 _exit(EXIT_FAILURE);
165 }
166 }
167
168 static const char *ansi_highlight(bool b) {
169
170 if (!on_tty())
171 return "";
172
173 return b ? ANSI_HIGHLIGHT_ON : ANSI_HIGHLIGHT_OFF;
174 }
175
176 static const char *ansi_highlight_green(bool b) {
177
178 if (!on_tty())
179 return "";
180
181 return b ? ANSI_HIGHLIGHT_GREEN_ON : ANSI_HIGHLIGHT_OFF;
182 }
183
184 static bool error_is_no_service(const DBusError *error) {
185 assert(error);
186
187 if (!dbus_error_is_set(error))
188 return false;
189
190 if (dbus_error_has_name(error, DBUS_ERROR_NAME_HAS_NO_OWNER))
191 return true;
192
193 if (dbus_error_has_name(error, DBUS_ERROR_SERVICE_UNKNOWN))
194 return true;
195
196 return startswith(error->name, "org.freedesktop.DBus.Error.Spawn.");
197 }
198
199 static int translate_bus_error_to_exit_status(int r, const DBusError *error) {
200 assert(error);
201
202 if (!dbus_error_is_set(error))
203 return r;
204
205 if (dbus_error_has_name(error, DBUS_ERROR_ACCESS_DENIED) ||
206 dbus_error_has_name(error, BUS_ERROR_ONLY_BY_DEPENDENCY) ||
207 dbus_error_has_name(error, BUS_ERROR_NO_ISOLATION) ||
208 dbus_error_has_name(error, BUS_ERROR_TRANSACTION_IS_DESTRUCTIVE))
209 return EXIT_NOPERMISSION;
210
211 if (dbus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT))
212 return EXIT_NOTINSTALLED;
213
214 if (dbus_error_has_name(error, BUS_ERROR_JOB_TYPE_NOT_APPLICABLE) ||
215 dbus_error_has_name(error, BUS_ERROR_NOT_SUPPORTED))
216 return EXIT_NOTIMPLEMENTED;
217
218 if (dbus_error_has_name(error, BUS_ERROR_LOAD_FAILED))
219 return EXIT_NOTCONFIGURED;
220
221 if (r != 0)
222 return r;
223
224 return EXIT_FAILURE;
225 }
226
227 static int bus_iter_get_basic_and_next(DBusMessageIter *iter, int type, void *data, bool next) {
228
229 assert(iter);
230 assert(data);
231
232 if (dbus_message_iter_get_arg_type(iter) != type)
233 return -EIO;
234
235 dbus_message_iter_get_basic(iter, data);
236
237 if (!dbus_message_iter_next(iter) != !next)
238 return -EIO;
239
240 return 0;
241 }
242
243 static void warn_wall(enum action action) {
244 static const char *table[_ACTION_MAX] = {
245 [ACTION_HALT] = "The system is going down for system halt NOW!",
246 [ACTION_REBOOT] = "The system is going down for reboot NOW!",
247 [ACTION_POWEROFF] = "The system is going down for power-off NOW!",
248 [ACTION_KEXEC] = "The system is going down for kexec reboot NOW!",
249 [ACTION_RESCUE] = "The system is going down to rescue mode NOW!",
250 [ACTION_EMERGENCY] = "The system is going down to emergency mode NOW!"
251 };
252
253 if (arg_no_wall)
254 return;
255
256 if (arg_wall) {
257 char *p;
258
259 if (!(p = strv_join(arg_wall, " "))) {
260 log_error("Failed to join strings.");
261 return;
262 }
263
264 if (*p) {
265 utmp_wall(p, NULL);
266 free(p);
267 return;
268 }
269
270 free(p);
271 }
272
273 if (!table[action])
274 return;
275
276 utmp_wall(table[action], NULL);
277 }
278
279 struct unit_info {
280 const char *id;
281 const char *description;
282 const char *load_state;
283 const char *active_state;
284 const char *sub_state;
285 const char *following;
286 const char *unit_path;
287 uint32_t job_id;
288 const char *job_type;
289 const char *job_path;
290 };
291
292 static int compare_unit_info(const void *a, const void *b) {
293 const char *d1, *d2;
294 const struct unit_info *u = a, *v = b;
295
296 d1 = strrchr(u->id, '.');
297 d2 = strrchr(v->id, '.');
298
299 if (d1 && d2) {
300 int r;
301
302 if ((r = strcasecmp(d1, d2)) != 0)
303 return r;
304 }
305
306 return strcasecmp(u->id, v->id);
307 }
308
309 static bool output_show_job(const struct unit_info *u) {
310 const char *dot;
311
312 return (!arg_type || ((dot = strrchr(u->id, '.')) &&
313 streq(dot+1, arg_type))) &&
314 (arg_all || !(streq(u->active_state, "inactive") || u->following[0]) || u->job_id > 0);
315 }
316
317 static void output_units_list(const struct unit_info *unit_infos, unsigned c) {
318 unsigned active_len, sub_len, job_len, n_shown = 0;
319 const struct unit_info *u;
320
321 active_len = sizeof("ACTIVE")-1;
322 sub_len = sizeof("SUB")-1;
323 job_len = sizeof("JOB")-1;
324
325 for (u = unit_infos; u < unit_infos + c; u++) {
326 if (!output_show_job(u))
327 continue;
328
329 active_len = MAX(active_len, strlen(u->active_state));
330 sub_len = MAX(sub_len, strlen(u->sub_state));
331 if (u->job_id != 0)
332 job_len = MAX(job_len, strlen(u->job_type));
333 }
334
335 if (on_tty()) {
336 printf("%-25s %-6s %-*s %-*s %-*s", "UNIT", "LOAD",
337 active_len, "ACTIVE", sub_len, "SUB", job_len, "JOB");
338 if (columns() >= 80+12 || arg_full)
339 printf(" %s\n", "DESCRIPTION");
340 else
341 printf("\n");
342 }
343
344 for (u = unit_infos; u < unit_infos + c; u++) {
345 char *e;
346 int a = 0, b = 0;
347 const char *on_loaded, *off_loaded;
348 const char *on_active, *off_active;
349
350 if (!output_show_job(u))
351 continue;
352
353 n_shown++;
354
355 if (!streq(u->load_state, "loaded") &&
356 !streq(u->load_state, "banned")) {
357 on_loaded = ansi_highlight(true);
358 off_loaded = ansi_highlight(false);
359 } else
360 on_loaded = off_loaded = "";
361
362 if (streq(u->active_state, "failed")) {
363 on_active = ansi_highlight(true);
364 off_active = ansi_highlight(false);
365 } else
366 on_active = off_active = "";
367
368 e = arg_full ? NULL : ellipsize(u->id, 25, 33);
369
370 printf("%-25s %s%-6s%s %s%-*s %-*s%s%n",
371 e ? e : u->id,
372 on_loaded, u->load_state, off_loaded,
373 on_active, active_len, u->active_state,
374 sub_len, u->sub_state, off_active,
375 &a);
376
377 free(e);
378
379 a -= strlen(on_loaded) + strlen(off_loaded);
380 a -= strlen(on_active) + strlen(off_active);
381
382 if (u->job_id != 0)
383 printf(" %-*s", job_len, u->job_type);
384 else
385 b = 1 + job_len;
386
387 if (a + b + 1 < columns()) {
388 if (u->job_id == 0)
389 printf(" %-*s", job_len, "");
390
391 if (arg_full)
392 printf(" %s", u->description);
393 else
394 printf(" %.*s", columns() - a - b - 1, u->description);
395 }
396
397 fputs("\n", stdout);
398 }
399
400 if (on_tty()) {
401 printf("\nLOAD = Reflects whether the unit definition was properly loaded.\n"
402 "ACTIVE = The high-level unit activation state, i.e. generalization of SUB.\n"
403 "SUB = The low-level unit activation state, values depend on unit type.\n"
404 "JOB = Pending job for the unit.\n");
405
406 if (arg_all)
407 printf("\n%u units listed.\n", n_shown);
408 else
409 printf("\n%u units listed. Pass --all to see inactive units, too.\n", n_shown);
410 }
411 }
412
413 static int list_units(DBusConnection *bus, char **args, unsigned n) {
414 DBusMessage *m = NULL, *reply = NULL;
415 DBusError error;
416 int r;
417 DBusMessageIter iter, sub, sub2;
418 unsigned c = 0, n_units = 0;
419 struct unit_info *unit_infos = NULL;
420
421 dbus_error_init(&error);
422
423 assert(bus);
424
425 pager_open();
426
427 if (!(m = dbus_message_new_method_call(
428 "org.freedesktop.systemd1",
429 "/org/freedesktop/systemd1",
430 "org.freedesktop.systemd1.Manager",
431 "ListUnits"))) {
432 log_error("Could not allocate message.");
433 return -ENOMEM;
434 }
435
436 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
437 log_error("Failed to issue method call: %s", bus_error_message(&error));
438 r = -EIO;
439 goto finish;
440 }
441
442 if (!dbus_message_iter_init(reply, &iter) ||
443 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
444 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
445 log_error("Failed to parse reply.");
446 r = -EIO;
447 goto finish;
448 }
449
450 dbus_message_iter_recurse(&iter, &sub);
451
452 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
453 struct unit_info *u;
454
455 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
456 log_error("Failed to parse reply.");
457 r = -EIO;
458 goto finish;
459 }
460
461 if (c >= n_units) {
462 struct unit_info *w;
463
464 n_units = MAX(2*c, 16);
465 w = realloc(unit_infos, sizeof(struct unit_info) * n_units);
466
467 if (!w) {
468 log_error("Failed to allocate unit array.");
469 r = -ENOMEM;
470 goto finish;
471 }
472
473 unit_infos = w;
474 }
475
476 u = unit_infos+c;
477
478 dbus_message_iter_recurse(&sub, &sub2);
479
480 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->id, true) < 0 ||
481 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->description, true) < 0 ||
482 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->load_state, true) < 0 ||
483 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->active_state, true) < 0 ||
484 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->sub_state, true) < 0 ||
485 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->following, true) < 0 ||
486 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &u->unit_path, true) < 0 ||
487 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &u->job_id, true) < 0 ||
488 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->job_type, true) < 0 ||
489 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &u->job_path, false) < 0) {
490 log_error("Failed to parse reply.");
491 r = -EIO;
492 goto finish;
493 }
494
495 dbus_message_iter_next(&sub);
496 c++;
497 }
498
499 qsort(unit_infos, c, sizeof(struct unit_info), compare_unit_info);
500 output_units_list(unit_infos, c);
501
502 r = 0;
503
504 finish:
505 if (m)
506 dbus_message_unref(m);
507
508 if (reply)
509 dbus_message_unref(reply);
510
511 free(unit_infos);
512
513 dbus_error_free(&error);
514
515 return r;
516 }
517
518 static int dot_one_property(const char *name, const char *prop, DBusMessageIter *iter) {
519 static const char * const colors[] = {
520 "Requires", "[color=\"black\"]",
521 "RequiresOverridable", "[color=\"black\"]",
522 "Requisite", "[color=\"darkblue\"]",
523 "RequisiteOverridable", "[color=\"darkblue\"]",
524 "Wants", "[color=\"darkgrey\"]",
525 "Conflicts", "[color=\"red\"]",
526 "ConflictedBy", "[color=\"red\"]",
527 "After", "[color=\"green\"]"
528 };
529
530 const char *c = NULL;
531 unsigned i;
532
533 assert(name);
534 assert(prop);
535 assert(iter);
536
537 for (i = 0; i < ELEMENTSOF(colors); i += 2)
538 if (streq(colors[i], prop)) {
539 c = colors[i+1];
540 break;
541 }
542
543 if (!c)
544 return 0;
545
546 if (arg_dot != DOT_ALL)
547 if ((arg_dot == DOT_ORDER) != streq(prop, "After"))
548 return 0;
549
550 switch (dbus_message_iter_get_arg_type(iter)) {
551
552 case DBUS_TYPE_ARRAY:
553
554 if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRING) {
555 DBusMessageIter sub;
556
557 dbus_message_iter_recurse(iter, &sub);
558
559 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
560 const char *s;
561
562 assert(dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING);
563 dbus_message_iter_get_basic(&sub, &s);
564 printf("\t\"%s\"->\"%s\" %s;\n", name, s, c);
565
566 dbus_message_iter_next(&sub);
567 }
568
569 return 0;
570 }
571 }
572
573 return 0;
574 }
575
576 static int dot_one(DBusConnection *bus, const char *name, const char *path) {
577 DBusMessage *m = NULL, *reply = NULL;
578 const char *interface = "org.freedesktop.systemd1.Unit";
579 int r;
580 DBusError error;
581 DBusMessageIter iter, sub, sub2, sub3;
582
583 assert(bus);
584 assert(path);
585
586 dbus_error_init(&error);
587
588 if (!(m = dbus_message_new_method_call(
589 "org.freedesktop.systemd1",
590 path,
591 "org.freedesktop.DBus.Properties",
592 "GetAll"))) {
593 log_error("Could not allocate message.");
594 r = -ENOMEM;
595 goto finish;
596 }
597
598 if (!dbus_message_append_args(m,
599 DBUS_TYPE_STRING, &interface,
600 DBUS_TYPE_INVALID)) {
601 log_error("Could not append arguments to message.");
602 r = -ENOMEM;
603 goto finish;
604 }
605
606 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
607 log_error("Failed to issue method call: %s", bus_error_message(&error));
608 r = -EIO;
609 goto finish;
610 }
611
612 if (!dbus_message_iter_init(reply, &iter) ||
613 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
614 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_DICT_ENTRY) {
615 log_error("Failed to parse reply.");
616 r = -EIO;
617 goto finish;
618 }
619
620 dbus_message_iter_recurse(&iter, &sub);
621
622 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
623 const char *prop;
624
625 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_DICT_ENTRY) {
626 log_error("Failed to parse reply.");
627 r = -EIO;
628 goto finish;
629 }
630
631 dbus_message_iter_recurse(&sub, &sub2);
632
633 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &prop, true) < 0) {
634 log_error("Failed to parse reply.");
635 r = -EIO;
636 goto finish;
637 }
638
639 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT) {
640 log_error("Failed to parse reply.");
641 r = -EIO;
642 goto finish;
643 }
644
645 dbus_message_iter_recurse(&sub2, &sub3);
646
647 if (dot_one_property(name, prop, &sub3)) {
648 log_error("Failed to parse reply.");
649 r = -EIO;
650 goto finish;
651 }
652
653 dbus_message_iter_next(&sub);
654 }
655
656 r = 0;
657
658 finish:
659 if (m)
660 dbus_message_unref(m);
661
662 if (reply)
663 dbus_message_unref(reply);
664
665 dbus_error_free(&error);
666
667 return r;
668 }
669
670 static int dot(DBusConnection *bus, char **args, unsigned n) {
671 DBusMessage *m = NULL, *reply = NULL;
672 DBusError error;
673 int r;
674 DBusMessageIter iter, sub, sub2;
675
676 dbus_error_init(&error);
677
678 assert(bus);
679
680 if (!(m = dbus_message_new_method_call(
681 "org.freedesktop.systemd1",
682 "/org/freedesktop/systemd1",
683 "org.freedesktop.systemd1.Manager",
684 "ListUnits"))) {
685 log_error("Could not allocate message.");
686 return -ENOMEM;
687 }
688
689 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
690 log_error("Failed to issue method call: %s", bus_error_message(&error));
691 r = -EIO;
692 goto finish;
693 }
694
695 if (!dbus_message_iter_init(reply, &iter) ||
696 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
697 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
698 log_error("Failed to parse reply.");
699 r = -EIO;
700 goto finish;
701 }
702
703 printf("digraph systemd {\n");
704
705 dbus_message_iter_recurse(&iter, &sub);
706 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
707 const char *id, *description, *load_state, *active_state, *sub_state, *following, *unit_path;
708
709 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
710 log_error("Failed to parse reply.");
711 r = -EIO;
712 goto finish;
713 }
714
715 dbus_message_iter_recurse(&sub, &sub2);
716
717 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &id, true) < 0 ||
718 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &description, true) < 0 ||
719 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &load_state, true) < 0 ||
720 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &active_state, true) < 0 ||
721 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &sub_state, true) < 0 ||
722 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &following, true) < 0 ||
723 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &unit_path, true) < 0) {
724 log_error("Failed to parse reply.");
725 r = -EIO;
726 goto finish;
727 }
728
729 if ((r = dot_one(bus, id, unit_path)) < 0)
730 goto finish;
731
732 /* printf("\t\"%s\";\n", id); */
733 dbus_message_iter_next(&sub);
734 }
735
736 printf("}\n");
737
738 log_info(" Color legend: black = Requires\n"
739 " dark blue = Requisite\n"
740 " dark grey = Wants\n"
741 " red = Conflicts\n"
742 " green = After\n");
743
744 if (isatty(fileno(stdout)))
745 log_notice("-- You probably want to process this output with graphviz' dot tool.\n"
746 "-- Try a shell pipeline like 'systemctl dot | dot -Tsvg > systemd.svg'!\n");
747
748 r = 0;
749
750 finish:
751 if (m)
752 dbus_message_unref(m);
753
754 if (reply)
755 dbus_message_unref(reply);
756
757 dbus_error_free(&error);
758
759 return r;
760 }
761
762 static int list_jobs(DBusConnection *bus, char **args, unsigned n) {
763 DBusMessage *m = NULL, *reply = NULL;
764 DBusError error;
765 int r;
766 DBusMessageIter iter, sub, sub2;
767 unsigned k = 0;
768
769 dbus_error_init(&error);
770
771 assert(bus);
772
773 pager_open();
774
775 if (!(m = dbus_message_new_method_call(
776 "org.freedesktop.systemd1",
777 "/org/freedesktop/systemd1",
778 "org.freedesktop.systemd1.Manager",
779 "ListJobs"))) {
780 log_error("Could not allocate message.");
781 return -ENOMEM;
782 }
783
784 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
785 log_error("Failed to issue method call: %s", bus_error_message(&error));
786 r = -EIO;
787 goto finish;
788 }
789
790 if (!dbus_message_iter_init(reply, &iter) ||
791 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
792 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
793 log_error("Failed to parse reply.");
794 r = -EIO;
795 goto finish;
796 }
797
798 dbus_message_iter_recurse(&iter, &sub);
799
800 if (isatty(STDOUT_FILENO))
801 printf("%4s %-25s %-15s %-7s\n", "JOB", "UNIT", "TYPE", "STATE");
802
803 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
804 const char *name, *type, *state, *job_path, *unit_path;
805 uint32_t id;
806 char *e;
807
808 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
809 log_error("Failed to parse reply.");
810 r = -EIO;
811 goto finish;
812 }
813
814 dbus_message_iter_recurse(&sub, &sub2);
815
816 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &id, true) < 0 ||
817 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0 ||
818 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) < 0 ||
819 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &state, true) < 0 ||
820 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &job_path, true) < 0 ||
821 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &unit_path, false) < 0) {
822 log_error("Failed to parse reply.");
823 r = -EIO;
824 goto finish;
825 }
826
827 e = arg_full ? NULL : ellipsize(name, 25, 33);
828 printf("%4u %-25s %-15s %-7s\n", id, e ? e : name, type, state);
829 free(e);
830
831 k++;
832
833 dbus_message_iter_next(&sub);
834 }
835
836 if (isatty(STDOUT_FILENO))
837 printf("\n%u jobs listed.\n", k);
838
839 r = 0;
840
841 finish:
842 if (m)
843 dbus_message_unref(m);
844
845 if (reply)
846 dbus_message_unref(reply);
847
848 dbus_error_free(&error);
849
850 return r;
851 }
852
853 static int load_unit(DBusConnection *bus, char **args, unsigned n) {
854 DBusMessage *m = NULL, *reply = NULL;
855 DBusError error;
856 int r;
857 unsigned i;
858
859 dbus_error_init(&error);
860
861 assert(bus);
862 assert(args);
863
864 for (i = 1; i < n; i++) {
865
866 if (!(m = dbus_message_new_method_call(
867 "org.freedesktop.systemd1",
868 "/org/freedesktop/systemd1",
869 "org.freedesktop.systemd1.Manager",
870 "LoadUnit"))) {
871 log_error("Could not allocate message.");
872 r = -ENOMEM;
873 goto finish;
874 }
875
876 if (!dbus_message_append_args(m,
877 DBUS_TYPE_STRING, &args[i],
878 DBUS_TYPE_INVALID)) {
879 log_error("Could not append arguments to message.");
880 r = -ENOMEM;
881 goto finish;
882 }
883
884 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
885 log_error("Failed to issue method call: %s", bus_error_message(&error));
886 r = -EIO;
887 goto finish;
888 }
889
890 dbus_message_unref(m);
891 dbus_message_unref(reply);
892
893 m = reply = NULL;
894 }
895
896 r = 0;
897
898 finish:
899 if (m)
900 dbus_message_unref(m);
901
902 if (reply)
903 dbus_message_unref(reply);
904
905 dbus_error_free(&error);
906
907 return r;
908 }
909
910 static int cancel_job(DBusConnection *bus, char **args, unsigned n) {
911 DBusMessage *m = NULL, *reply = NULL;
912 DBusError error;
913 int r;
914 unsigned i;
915
916 dbus_error_init(&error);
917
918 assert(bus);
919 assert(args);
920
921 if (n <= 1)
922 return daemon_reload(bus, args, n);
923
924 for (i = 1; i < n; i++) {
925 unsigned id;
926 const char *path;
927
928 if (!(m = dbus_message_new_method_call(
929 "org.freedesktop.systemd1",
930 "/org/freedesktop/systemd1",
931 "org.freedesktop.systemd1.Manager",
932 "GetJob"))) {
933 log_error("Could not allocate message.");
934 r = -ENOMEM;
935 goto finish;
936 }
937
938 if ((r = safe_atou(args[i], &id)) < 0) {
939 log_error("Failed to parse job id: %s", strerror(-r));
940 goto finish;
941 }
942
943 assert_cc(sizeof(uint32_t) == sizeof(id));
944 if (!dbus_message_append_args(m,
945 DBUS_TYPE_UINT32, &id,
946 DBUS_TYPE_INVALID)) {
947 log_error("Could not append arguments to message.");
948 r = -ENOMEM;
949 goto finish;
950 }
951
952 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
953 log_error("Failed to issue method call: %s", bus_error_message(&error));
954 r = -EIO;
955 goto finish;
956 }
957
958 if (!dbus_message_get_args(reply, &error,
959 DBUS_TYPE_OBJECT_PATH, &path,
960 DBUS_TYPE_INVALID)) {
961 log_error("Failed to parse reply: %s", bus_error_message(&error));
962 r = -EIO;
963 goto finish;
964 }
965
966 dbus_message_unref(m);
967 if (!(m = dbus_message_new_method_call(
968 "org.freedesktop.systemd1",
969 path,
970 "org.freedesktop.systemd1.Job",
971 "Cancel"))) {
972 log_error("Could not allocate message.");
973 r = -ENOMEM;
974 goto finish;
975 }
976
977 dbus_message_unref(reply);
978 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
979 log_error("Failed to issue method call: %s", bus_error_message(&error));
980 r = -EIO;
981 goto finish;
982 }
983
984 dbus_message_unref(m);
985 dbus_message_unref(reply);
986 m = reply = NULL;
987 }
988
989 r = 0;
990
991 finish:
992 if (m)
993 dbus_message_unref(m);
994
995 if (reply)
996 dbus_message_unref(reply);
997
998 dbus_error_free(&error);
999
1000 return r;
1001 }
1002
1003 static bool need_daemon_reload(DBusConnection *bus, const char *unit) {
1004 DBusMessage *m = NULL, *reply = NULL;
1005 dbus_bool_t b = FALSE;
1006 DBusMessageIter iter, sub;
1007 const char
1008 *interface = "org.freedesktop.systemd1.Unit",
1009 *property = "NeedDaemonReload",
1010 *path;
1011
1012 /* We ignore all errors here, since this is used to show a warning only */
1013
1014 if (!(m = dbus_message_new_method_call(
1015 "org.freedesktop.systemd1",
1016 "/org/freedesktop/systemd1",
1017 "org.freedesktop.systemd1.Manager",
1018 "GetUnit")))
1019 goto finish;
1020
1021 if (!dbus_message_append_args(m,
1022 DBUS_TYPE_STRING, &unit,
1023 DBUS_TYPE_INVALID))
1024 goto finish;
1025
1026 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, NULL)))
1027 goto finish;
1028
1029 if (!dbus_message_get_args(reply, NULL,
1030 DBUS_TYPE_OBJECT_PATH, &path,
1031 DBUS_TYPE_INVALID))
1032 goto finish;
1033
1034 dbus_message_unref(m);
1035 if (!(m = dbus_message_new_method_call(
1036 "org.freedesktop.systemd1",
1037 path,
1038 "org.freedesktop.DBus.Properties",
1039 "Get")))
1040 goto finish;
1041
1042 if (!dbus_message_append_args(m,
1043 DBUS_TYPE_STRING, &interface,
1044 DBUS_TYPE_STRING, &property,
1045 DBUS_TYPE_INVALID)) {
1046 goto finish;
1047 }
1048
1049 dbus_message_unref(reply);
1050 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, NULL)))
1051 goto finish;
1052
1053 if (!dbus_message_iter_init(reply, &iter) ||
1054 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT)
1055 goto finish;
1056
1057 dbus_message_iter_recurse(&iter, &sub);
1058
1059 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_BOOLEAN)
1060 goto finish;
1061
1062 dbus_message_iter_get_basic(&sub, &b);
1063
1064 finish:
1065 if (m)
1066 dbus_message_unref(m);
1067
1068 if (reply)
1069 dbus_message_unref(reply);
1070
1071 return b;
1072 }
1073
1074 typedef struct WaitData {
1075 Set *set;
1076 bool failed;
1077 } WaitData;
1078
1079 static DBusHandlerResult wait_filter(DBusConnection *connection, DBusMessage *message, void *data) {
1080 DBusError error;
1081 WaitData *d = data;
1082
1083 assert(connection);
1084 assert(message);
1085 assert(d);
1086
1087 dbus_error_init(&error);
1088
1089 log_debug("Got D-Bus request: %s.%s() on %s",
1090 dbus_message_get_interface(message),
1091 dbus_message_get_member(message),
1092 dbus_message_get_path(message));
1093
1094 if (dbus_message_is_signal(message, DBUS_INTERFACE_LOCAL, "Disconnected")) {
1095 log_error("Warning! D-Bus connection terminated.");
1096 dbus_connection_close(connection);
1097
1098 } else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "JobRemoved")) {
1099 uint32_t id;
1100 const char *path;
1101 dbus_bool_t success = true;
1102
1103 if (!dbus_message_get_args(message, &error,
1104 DBUS_TYPE_UINT32, &id,
1105 DBUS_TYPE_OBJECT_PATH, &path,
1106 DBUS_TYPE_BOOLEAN, &success,
1107 DBUS_TYPE_INVALID))
1108 log_error("Failed to parse message: %s", bus_error_message(&error));
1109 else {
1110 char *p;
1111
1112 if ((p = set_remove(d->set, (char*) path)))
1113 free(p);
1114
1115 if (!success)
1116 d->failed = true;
1117 }
1118 }
1119
1120 dbus_error_free(&error);
1121 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1122 }
1123
1124 static int enable_wait_for_jobs(DBusConnection *bus) {
1125 DBusError error;
1126
1127 assert(bus);
1128
1129 if (private_bus)
1130 return 0;
1131
1132 dbus_error_init(&error);
1133 dbus_bus_add_match(bus,
1134 "type='signal',"
1135 "sender='org.freedesktop.systemd1',"
1136 "interface='org.freedesktop.systemd1.Manager',"
1137 "member='JobRemoved',"
1138 "path='/org/freedesktop/systemd1'",
1139 &error);
1140
1141 if (dbus_error_is_set(&error)) {
1142 log_error("Failed to add match: %s", bus_error_message(&error));
1143 dbus_error_free(&error);
1144 return -EIO;
1145 }
1146
1147 /* This is slightly dirty, since we don't undo the match registrations. */
1148 return 0;
1149 }
1150
1151 static int wait_for_jobs(DBusConnection *bus, Set *s) {
1152 int r;
1153 WaitData d;
1154
1155 assert(bus);
1156 assert(s);
1157
1158 zero(d);
1159 d.set = s;
1160 d.failed = false;
1161
1162 if (!dbus_connection_add_filter(bus, wait_filter, &d, NULL)) {
1163 log_error("Failed to add filter.");
1164 r = -ENOMEM;
1165 goto finish;
1166 }
1167
1168 while (!set_isempty(s) &&
1169 dbus_connection_read_write_dispatch(bus, -1))
1170 ;
1171
1172 if (!arg_quiet && d.failed)
1173 log_error("Job failed. See system logs and 'systemctl status' for details.");
1174
1175 r = d.failed ? -EIO : 0;
1176
1177 finish:
1178 /* This is slightly dirty, since we don't undo the filter registration. */
1179
1180 return r;
1181 }
1182
1183 static int start_unit_one(
1184 DBusConnection *bus,
1185 const char *method,
1186 const char *name,
1187 const char *mode,
1188 DBusError *error,
1189 Set *s) {
1190
1191 DBusMessage *m = NULL, *reply = NULL;
1192 const char *path;
1193 int r;
1194
1195 assert(bus);
1196 assert(method);
1197 assert(name);
1198 assert(mode);
1199 assert(error);
1200 assert(arg_no_block || s);
1201
1202 if (!(m = dbus_message_new_method_call(
1203 "org.freedesktop.systemd1",
1204 "/org/freedesktop/systemd1",
1205 "org.freedesktop.systemd1.Manager",
1206 method))) {
1207 log_error("Could not allocate message.");
1208 r = -ENOMEM;
1209 goto finish;
1210 }
1211
1212 if (!dbus_message_append_args(m,
1213 DBUS_TYPE_STRING, &name,
1214 DBUS_TYPE_STRING, &mode,
1215 DBUS_TYPE_INVALID)) {
1216 log_error("Could not append arguments to message.");
1217 r = -ENOMEM;
1218 goto finish;
1219 }
1220
1221 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, error))) {
1222
1223 if (arg_action != ACTION_SYSTEMCTL && error_is_no_service(error)) {
1224 /* There's always a fallback possible for
1225 * legacy actions. */
1226 r = -EADDRNOTAVAIL;
1227 goto finish;
1228 }
1229
1230 log_error("Failed to issue method call: %s", bus_error_message(error));
1231 r = -EIO;
1232 goto finish;
1233 }
1234
1235 if (!dbus_message_get_args(reply, error,
1236 DBUS_TYPE_OBJECT_PATH, &path,
1237 DBUS_TYPE_INVALID)) {
1238 log_error("Failed to parse reply: %s", bus_error_message(error));
1239 r = -EIO;
1240 goto finish;
1241 }
1242
1243 if (need_daemon_reload(bus, name))
1244 log_warning("Unit file of created job changed on disk, 'systemctl %s daemon-reload' recommended.",
1245 arg_user ? "--user" : "--system");
1246
1247 if (!arg_no_block) {
1248 char *p;
1249
1250 if (!(p = strdup(path))) {
1251 log_error("Failed to duplicate path.");
1252 r = -ENOMEM;
1253 goto finish;
1254 }
1255
1256 if ((r = set_put(s, p)) < 0) {
1257 free(p);
1258 log_error("Failed to add path to set.");
1259 goto finish;
1260 }
1261 }
1262
1263 r = 0;
1264
1265 finish:
1266 if (m)
1267 dbus_message_unref(m);
1268
1269 if (reply)
1270 dbus_message_unref(reply);
1271
1272 return r;
1273 }
1274
1275 static enum action verb_to_action(const char *verb) {
1276 if (streq(verb, "halt"))
1277 return ACTION_HALT;
1278 else if (streq(verb, "poweroff"))
1279 return ACTION_POWEROFF;
1280 else if (streq(verb, "reboot"))
1281 return ACTION_REBOOT;
1282 else if (streq(verb, "kexec"))
1283 return ACTION_KEXEC;
1284 else if (streq(verb, "rescue"))
1285 return ACTION_RESCUE;
1286 else if (streq(verb, "emergency"))
1287 return ACTION_EMERGENCY;
1288 else if (streq(verb, "default"))
1289 return ACTION_DEFAULT;
1290 else if (streq(verb, "exit"))
1291 return ACTION_EXIT;
1292 else
1293 return ACTION_INVALID;
1294 }
1295
1296 static int start_unit(DBusConnection *bus, char **args, unsigned n) {
1297
1298 static const char * const table[_ACTION_MAX] = {
1299 [ACTION_HALT] = SPECIAL_HALT_TARGET,
1300 [ACTION_POWEROFF] = SPECIAL_POWEROFF_TARGET,
1301 [ACTION_REBOOT] = SPECIAL_REBOOT_TARGET,
1302 [ACTION_KEXEC] = SPECIAL_KEXEC_TARGET,
1303 [ACTION_RUNLEVEL2] = SPECIAL_RUNLEVEL2_TARGET,
1304 [ACTION_RUNLEVEL3] = SPECIAL_RUNLEVEL3_TARGET,
1305 [ACTION_RUNLEVEL4] = SPECIAL_RUNLEVEL4_TARGET,
1306 [ACTION_RUNLEVEL5] = SPECIAL_RUNLEVEL5_TARGET,
1307 [ACTION_RESCUE] = SPECIAL_RESCUE_TARGET,
1308 [ACTION_EMERGENCY] = SPECIAL_EMERGENCY_TARGET,
1309 [ACTION_DEFAULT] = SPECIAL_DEFAULT_TARGET,
1310 [ACTION_EXIT] = SPECIAL_EXIT_TARGET
1311 };
1312
1313 int r, ret = 0;
1314 unsigned i;
1315 const char *method, *mode, *one_name;
1316 Set *s = NULL;
1317 DBusError error;
1318
1319 dbus_error_init(&error);
1320
1321 assert(bus);
1322
1323 spawn_ask_password_agent();
1324
1325 if (arg_action == ACTION_SYSTEMCTL) {
1326 method =
1327 streq(args[0], "stop") ? "StopUnit" :
1328 streq(args[0], "reload") ? "ReloadUnit" :
1329 streq(args[0], "restart") ? "RestartUnit" :
1330 streq(args[0], "try-restart") ||
1331 streq(args[0], "condrestart") ? "TryRestartUnit" :
1332 streq(args[0], "reload-or-restart") ? "ReloadOrRestartUnit" :
1333 streq(args[0], "reload-or-try-restart") ||
1334 streq(args[0], "force-reload") ? "ReloadOrTryRestartUnit" :
1335 "StartUnit";
1336
1337 mode =
1338 (streq(args[0], "isolate") ||
1339 streq(args[0], "rescue") ||
1340 streq(args[0], "emergency")) ? "isolate" :
1341 arg_fail ? "fail" :
1342 "replace";
1343
1344 one_name = table[verb_to_action(args[0])];
1345
1346 } else {
1347 assert(arg_action < ELEMENTSOF(table));
1348 assert(table[arg_action]);
1349
1350 method = "StartUnit";
1351
1352 mode = (arg_action == ACTION_EMERGENCY ||
1353 arg_action == ACTION_RESCUE ||
1354 arg_action == ACTION_RUNLEVEL2 ||
1355 arg_action == ACTION_RUNLEVEL3 ||
1356 arg_action == ACTION_RUNLEVEL4 ||
1357 arg_action == ACTION_RUNLEVEL5) ? "isolate" : "replace";
1358
1359 one_name = table[arg_action];
1360 }
1361
1362 if (!arg_no_block) {
1363 if ((ret = enable_wait_for_jobs(bus)) < 0) {
1364 log_error("Could not watch jobs: %s", strerror(-ret));
1365 goto finish;
1366 }
1367
1368 if (!(s = set_new(string_hash_func, string_compare_func))) {
1369 log_error("Failed to allocate set.");
1370 ret = -ENOMEM;
1371 goto finish;
1372 }
1373 }
1374
1375 if (one_name) {
1376 if ((ret = start_unit_one(bus, method, one_name, mode, &error, s)) <= 0)
1377 goto finish;
1378 } else {
1379 for (i = 1; i < n; i++)
1380 if ((r = start_unit_one(bus, method, args[i], mode, &error, s)) != 0) {
1381 ret = translate_bus_error_to_exit_status(r, &error);
1382 dbus_error_free(&error);
1383 }
1384 }
1385
1386 if (!arg_no_block)
1387 if ((r = wait_for_jobs(bus, s)) < 0) {
1388 ret = r;
1389 goto finish;
1390 }
1391
1392 finish:
1393 if (s)
1394 set_free_free(s);
1395
1396 dbus_error_free(&error);
1397
1398 return ret;
1399 }
1400
1401 static int start_special(DBusConnection *bus, char **args, unsigned n) {
1402 int r;
1403
1404 assert(bus);
1405 assert(args);
1406
1407 if (arg_force &&
1408 (streq(args[0], "halt") ||
1409 streq(args[0], "poweroff") ||
1410 streq(args[0], "reboot") ||
1411 streq(args[0], "kexec") ||
1412 streq(args[0], "exit")))
1413 return daemon_reload(bus, args, n);
1414
1415 r = start_unit(bus, args, n);
1416
1417 if (r >= 0)
1418 warn_wall(verb_to_action(args[0]));
1419
1420 return r;
1421 }
1422
1423 static int check_unit(DBusConnection *bus, char **args, unsigned n) {
1424 DBusMessage *m = NULL, *reply = NULL;
1425 const char
1426 *interface = "org.freedesktop.systemd1.Unit",
1427 *property = "ActiveState";
1428 int r = 3; /* According to LSB: "program is not running" */
1429 DBusError error;
1430 unsigned i;
1431
1432 assert(bus);
1433 assert(args);
1434
1435 dbus_error_init(&error);
1436
1437 for (i = 1; i < n; i++) {
1438 const char *path = NULL;
1439 const char *state;
1440 DBusMessageIter iter, sub;
1441
1442 if (!(m = dbus_message_new_method_call(
1443 "org.freedesktop.systemd1",
1444 "/org/freedesktop/systemd1",
1445 "org.freedesktop.systemd1.Manager",
1446 "GetUnit"))) {
1447 log_error("Could not allocate message.");
1448 r = -ENOMEM;
1449 goto finish;
1450 }
1451
1452 if (!dbus_message_append_args(m,
1453 DBUS_TYPE_STRING, &args[i],
1454 DBUS_TYPE_INVALID)) {
1455 log_error("Could not append arguments to message.");
1456 r = -ENOMEM;
1457 goto finish;
1458 }
1459
1460 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1461
1462 /* Hmm, cannot figure out anything about this unit... */
1463 if (!arg_quiet)
1464 puts("unknown");
1465
1466 dbus_error_free(&error);
1467 dbus_message_unref(m);
1468 continue;
1469 }
1470
1471 if (!dbus_message_get_args(reply, &error,
1472 DBUS_TYPE_OBJECT_PATH, &path,
1473 DBUS_TYPE_INVALID)) {
1474 log_error("Failed to parse reply: %s", bus_error_message(&error));
1475 r = -EIO;
1476 goto finish;
1477 }
1478
1479 dbus_message_unref(m);
1480 if (!(m = dbus_message_new_method_call(
1481 "org.freedesktop.systemd1",
1482 path,
1483 "org.freedesktop.DBus.Properties",
1484 "Get"))) {
1485 log_error("Could not allocate message.");
1486 r = -ENOMEM;
1487 goto finish;
1488 }
1489
1490 if (!dbus_message_append_args(m,
1491 DBUS_TYPE_STRING, &interface,
1492 DBUS_TYPE_STRING, &property,
1493 DBUS_TYPE_INVALID)) {
1494 log_error("Could not append arguments to message.");
1495 r = -ENOMEM;
1496 goto finish;
1497 }
1498
1499 dbus_message_unref(reply);
1500 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1501 log_error("Failed to issue method call: %s", bus_error_message(&error));
1502 r = -EIO;
1503 goto finish;
1504 }
1505
1506 if (!dbus_message_iter_init(reply, &iter) ||
1507 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
1508 log_error("Failed to parse reply.");
1509 r = -EIO;
1510 goto finish;
1511 }
1512
1513 dbus_message_iter_recurse(&iter, &sub);
1514
1515 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
1516 log_error("Failed to parse reply.");
1517 r = -EIO;
1518 goto finish;
1519 }
1520
1521 dbus_message_iter_get_basic(&sub, &state);
1522
1523 if (!arg_quiet)
1524 puts(state);
1525
1526 if (streq(state, "active") || streq(state, "reloading"))
1527 r = 0;
1528
1529 dbus_message_unref(m);
1530 dbus_message_unref(reply);
1531 m = reply = NULL;
1532 }
1533
1534 finish:
1535 if (m)
1536 dbus_message_unref(m);
1537
1538 if (reply)
1539 dbus_message_unref(reply);
1540
1541 dbus_error_free(&error);
1542
1543 return r;
1544 }
1545
1546 static int kill_unit(DBusConnection *bus, char **args, unsigned n) {
1547 DBusMessage *m = NULL, *reply = NULL;
1548 int r = 0;
1549 DBusError error;
1550 unsigned i;
1551
1552 assert(bus);
1553 assert(args);
1554
1555 dbus_error_init(&error);
1556
1557 if (!arg_kill_who)
1558 arg_kill_who = "all";
1559
1560 if (!arg_kill_mode)
1561 arg_kill_mode = streq(arg_kill_who, "all") ? "control-group" : "process";
1562
1563 for (i = 1; i < n; i++) {
1564
1565 if (!(m = dbus_message_new_method_call(
1566 "org.freedesktop.systemd1",
1567 "/org/freedesktop/systemd1",
1568 "org.freedesktop.systemd1.Manager",
1569 "KillUnit"))) {
1570 log_error("Could not allocate message.");
1571 r = -ENOMEM;
1572 goto finish;
1573 }
1574
1575 if (!dbus_message_append_args(m,
1576 DBUS_TYPE_STRING, &args[i],
1577 DBUS_TYPE_STRING, &arg_kill_who,
1578 DBUS_TYPE_STRING, &arg_kill_mode,
1579 DBUS_TYPE_INT32, &arg_signal,
1580 DBUS_TYPE_INVALID)) {
1581 log_error("Could not append arguments to message.");
1582 r = -ENOMEM;
1583 goto finish;
1584 }
1585
1586 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1587 log_error("Failed to issue method call: %s", bus_error_message(&error));
1588 dbus_error_free(&error);
1589 r = -EIO;
1590 }
1591
1592 dbus_message_unref(m);
1593
1594 if (reply)
1595 dbus_message_unref(reply);
1596 m = reply = NULL;
1597 }
1598
1599 finish:
1600 if (m)
1601 dbus_message_unref(m);
1602
1603 if (reply)
1604 dbus_message_unref(reply);
1605
1606 dbus_error_free(&error);
1607
1608 return r;
1609 }
1610
1611 typedef struct ExecStatusInfo {
1612 char *path;
1613 char **argv;
1614
1615 bool ignore;
1616
1617 usec_t start_timestamp;
1618 usec_t exit_timestamp;
1619 pid_t pid;
1620 int code;
1621 int status;
1622
1623 LIST_FIELDS(struct ExecStatusInfo, exec);
1624 } ExecStatusInfo;
1625
1626 static void exec_status_info_free(ExecStatusInfo *i) {
1627 assert(i);
1628
1629 free(i->path);
1630 strv_free(i->argv);
1631 free(i);
1632 }
1633
1634 static int exec_status_info_deserialize(DBusMessageIter *sub, ExecStatusInfo *i) {
1635 uint64_t start_timestamp, exit_timestamp;
1636 DBusMessageIter sub2, sub3;
1637 const char*path;
1638 unsigned n;
1639 uint32_t pid;
1640 int32_t code, status;
1641 dbus_bool_t ignore;
1642
1643 assert(i);
1644 assert(i);
1645
1646 if (dbus_message_iter_get_arg_type(sub) != DBUS_TYPE_STRUCT)
1647 return -EIO;
1648
1649 dbus_message_iter_recurse(sub, &sub2);
1650
1651 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, true) < 0)
1652 return -EIO;
1653
1654 if (!(i->path = strdup(path)))
1655 return -ENOMEM;
1656
1657 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_ARRAY ||
1658 dbus_message_iter_get_element_type(&sub2) != DBUS_TYPE_STRING)
1659 return -EIO;
1660
1661 n = 0;
1662 dbus_message_iter_recurse(&sub2, &sub3);
1663 while (dbus_message_iter_get_arg_type(&sub3) != DBUS_TYPE_INVALID) {
1664 assert(dbus_message_iter_get_arg_type(&sub3) == DBUS_TYPE_STRING);
1665 dbus_message_iter_next(&sub3);
1666 n++;
1667 }
1668
1669
1670 if (!(i->argv = new0(char*, n+1)))
1671 return -ENOMEM;
1672
1673 n = 0;
1674 dbus_message_iter_recurse(&sub2, &sub3);
1675 while (dbus_message_iter_get_arg_type(&sub3) != DBUS_TYPE_INVALID) {
1676 const char *s;
1677
1678 assert(dbus_message_iter_get_arg_type(&sub3) == DBUS_TYPE_STRING);
1679 dbus_message_iter_get_basic(&sub3, &s);
1680 dbus_message_iter_next(&sub3);
1681
1682 if (!(i->argv[n++] = strdup(s)))
1683 return -ENOMEM;
1684 }
1685
1686 if (!dbus_message_iter_next(&sub2) ||
1687 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_BOOLEAN, &ignore, true) < 0 ||
1688 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &start_timestamp, true) < 0 ||
1689 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &exit_timestamp, true) < 0 ||
1690 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &pid, true) < 0 ||
1691 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_INT32, &code, true) < 0 ||
1692 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_INT32, &status, false) < 0)
1693 return -EIO;
1694
1695 i->ignore = ignore;
1696 i->start_timestamp = (usec_t) start_timestamp;
1697 i->exit_timestamp = (usec_t) exit_timestamp;
1698 i->pid = (pid_t) pid;
1699 i->code = code;
1700 i->status = status;
1701
1702 return 0;
1703 }
1704
1705 typedef struct UnitStatusInfo {
1706 const char *id;
1707 const char *load_state;
1708 const char *active_state;
1709 const char *sub_state;
1710
1711 const char *description;
1712 const char *following;
1713
1714 const char *path;
1715 const char *default_control_group;
1716
1717 usec_t inactive_exit_timestamp;
1718 usec_t active_enter_timestamp;
1719 usec_t active_exit_timestamp;
1720 usec_t inactive_enter_timestamp;
1721
1722 bool need_daemon_reload;
1723
1724 /* Service */
1725 pid_t main_pid;
1726 pid_t control_pid;
1727 const char *status_text;
1728 bool running:1;
1729 #ifdef HAVE_SYSV_COMPAT
1730 bool is_sysv:1;
1731 #endif
1732
1733 usec_t start_timestamp;
1734 usec_t exit_timestamp;
1735
1736 int exit_code, exit_status;
1737
1738 /* Socket */
1739 unsigned n_accepted;
1740 unsigned n_connections;
1741 bool accept;
1742
1743 /* Device */
1744 const char *sysfs_path;
1745
1746 /* Mount, Automount */
1747 const char *where;
1748
1749 /* Swap */
1750 const char *what;
1751
1752 LIST_HEAD(ExecStatusInfo, exec);
1753 } UnitStatusInfo;
1754
1755 static void print_status_info(UnitStatusInfo *i) {
1756 ExecStatusInfo *p;
1757 const char *on, *off, *ss;
1758 usec_t timestamp;
1759 char since1[FORMAT_TIMESTAMP_PRETTY_MAX], *s1;
1760 char since2[FORMAT_TIMESTAMP_MAX], *s2;
1761
1762 assert(i);
1763
1764 /* This shows pretty information about a unit. See
1765 * print_property() for a low-level property printer */
1766
1767 printf("%s", strna(i->id));
1768
1769 if (i->description && !streq_ptr(i->id, i->description))
1770 printf(" - %s", i->description);
1771
1772 printf("\n");
1773
1774 if (i->following)
1775 printf("\t Follow: unit currently follows state of %s\n", i->following);
1776
1777 if (streq_ptr(i->load_state, "failed") ||
1778 streq_ptr(i->load_state, "banned")) {
1779 on = ansi_highlight(true);
1780 off = ansi_highlight(false);
1781 } else
1782 on = off = "";
1783
1784 if (i->path)
1785 printf("\t Loaded: %s%s%s (%s)\n", on, strna(i->load_state), off, i->path);
1786 else
1787 printf("\t Loaded: %s%s%s\n", on, strna(i->load_state), off);
1788
1789 ss = streq_ptr(i->active_state, i->sub_state) ? NULL : i->sub_state;
1790
1791 if (streq_ptr(i->active_state, "failed")) {
1792 on = ansi_highlight(true);
1793 off = ansi_highlight(false);
1794 } else if (streq_ptr(i->active_state, "active") || streq_ptr(i->active_state, "reloading")) {
1795 on = ansi_highlight_green(true);
1796 off = ansi_highlight_green(false);
1797 } else
1798 on = off = "";
1799
1800 if (ss)
1801 printf("\t Active: %s%s (%s)%s",
1802 on,
1803 strna(i->active_state),
1804 ss,
1805 off);
1806 else
1807 printf("\t Active: %s%s%s",
1808 on,
1809 strna(i->active_state),
1810 off);
1811
1812 timestamp = (streq_ptr(i->active_state, "active") ||
1813 streq_ptr(i->active_state, "reloading")) ? i->active_enter_timestamp :
1814 (streq_ptr(i->active_state, "inactive") ||
1815 streq_ptr(i->active_state, "failed")) ? i->inactive_enter_timestamp :
1816 streq_ptr(i->active_state, "activating") ? i->inactive_exit_timestamp :
1817 i->active_exit_timestamp;
1818
1819 s1 = format_timestamp_pretty(since1, sizeof(since1), timestamp);
1820 s2 = format_timestamp(since2, sizeof(since2), timestamp);
1821
1822 if (s1)
1823 printf(" since %s; %s\n", s2, s1);
1824 else if (s2)
1825 printf(" since %s\n", s2);
1826 else
1827 printf("\n");
1828
1829 if (i->sysfs_path)
1830 printf("\t Device: %s\n", i->sysfs_path);
1831 if (i->where)
1832 printf("\t Where: %s\n", i->where);
1833 if (i->what)
1834 printf("\t What: %s\n", i->what);
1835
1836 if (i->accept)
1837 printf("\tAccepted: %u; Connected: %u\n", i->n_accepted, i->n_connections);
1838
1839 LIST_FOREACH(exec, p, i->exec) {
1840 char *t;
1841
1842 /* Only show exited processes here */
1843 if (p->code == 0)
1844 continue;
1845
1846 t = strv_join(p->argv, " ");
1847 printf("\t Process: %u (%s, code=%s, ", p->pid, strna(t), sigchld_code_to_string(p->code));
1848 free(t);
1849
1850 if (p->code == CLD_EXITED) {
1851 const char *c;
1852
1853 printf("status=%i", p->status);
1854
1855 #ifdef HAVE_SYSV_COMPAT
1856 if ((c = exit_status_to_string(p->status, i->is_sysv ? EXIT_STATUS_LSB : EXIT_STATUS_SYSTEMD)))
1857 #else
1858 if ((c = exit_status_to_string(p->status, EXIT_STATUS_SYSTEMD)))
1859 #endif
1860 printf("/%s", c);
1861
1862 } else
1863 printf("signal=%s", signal_to_string(p->status));
1864 printf(")\n");
1865
1866 if (i->main_pid == p->pid &&
1867 i->start_timestamp == p->start_timestamp &&
1868 i->exit_timestamp == p->start_timestamp)
1869 /* Let's not show this twice */
1870 i->main_pid = 0;
1871
1872 if (p->pid == i->control_pid)
1873 i->control_pid = 0;
1874 }
1875
1876 if (i->main_pid > 0 || i->control_pid > 0) {
1877 printf("\t");
1878
1879 if (i->main_pid > 0) {
1880 printf("Main PID: %u", (unsigned) i->main_pid);
1881
1882 if (i->running) {
1883 char *t = NULL;
1884 get_process_name(i->main_pid, &t);
1885 if (t) {
1886 printf(" (%s)", t);
1887 free(t);
1888 }
1889 } else if (i->exit_code > 0) {
1890 printf(" (code=%s, ", sigchld_code_to_string(i->exit_code));
1891
1892 if (i->exit_code == CLD_EXITED) {
1893 const char *c;
1894
1895 printf("status=%i", i->exit_status);
1896
1897 #ifdef HAVE_SYSV_COMPAT
1898 if ((c = exit_status_to_string(i->exit_status, i->is_sysv ? EXIT_STATUS_LSB : EXIT_STATUS_SYSTEMD)))
1899 #else
1900 if ((c = exit_status_to_string(i->exit_status, EXIT_STATUS_SYSTEMD)))
1901 #endif
1902 printf("/%s", c);
1903
1904 } else
1905 printf("signal=%s", signal_to_string(i->exit_status));
1906 printf(")");
1907 }
1908 }
1909
1910 if (i->main_pid > 0 && i->control_pid > 0)
1911 printf(";");
1912
1913 if (i->control_pid > 0) {
1914 char *t = NULL;
1915
1916 printf(" Control: %u", (unsigned) i->control_pid);
1917
1918 get_process_name(i->control_pid, &t);
1919 if (t) {
1920 printf(" (%s)", t);
1921 free(t);
1922 }
1923 }
1924
1925 printf("\n");
1926 }
1927
1928 if (i->status_text)
1929 printf("\t Status: \"%s\"\n", i->status_text);
1930
1931 if (i->default_control_group) {
1932 unsigned c;
1933
1934 printf("\t CGroup: %s\n", i->default_control_group);
1935
1936 if ((c = columns()) > 18)
1937 c -= 18;
1938 else
1939 c = 0;
1940
1941 show_cgroup_by_path(i->default_control_group, "\t\t ", c);
1942 }
1943
1944 if (i->need_daemon_reload)
1945 printf("\n%sWarning:%s Unit file changed on disk, 'systemctl %s daemon-reload' recommended.\n",
1946 ansi_highlight(true),
1947 ansi_highlight(false),
1948 arg_user ? "--user" : "--system");
1949 }
1950
1951 static int status_property(const char *name, DBusMessageIter *iter, UnitStatusInfo *i) {
1952
1953 switch (dbus_message_iter_get_arg_type(iter)) {
1954
1955 case DBUS_TYPE_STRING: {
1956 const char *s;
1957
1958 dbus_message_iter_get_basic(iter, &s);
1959
1960 if (s[0]) {
1961 if (streq(name, "Id"))
1962 i->id = s;
1963 else if (streq(name, "LoadState"))
1964 i->load_state = s;
1965 else if (streq(name, "ActiveState"))
1966 i->active_state = s;
1967 else if (streq(name, "SubState"))
1968 i->sub_state = s;
1969 else if (streq(name, "Description"))
1970 i->description = s;
1971 else if (streq(name, "FragmentPath"))
1972 i->path = s;
1973 #ifdef HAVE_SYSV_COMPAT
1974 else if (streq(name, "SysVPath")) {
1975 i->is_sysv = true;
1976 i->path = s;
1977 }
1978 #endif
1979 else if (streq(name, "DefaultControlGroup"))
1980 i->default_control_group = s;
1981 else if (streq(name, "StatusText"))
1982 i->status_text = s;
1983 else if (streq(name, "SysFSPath"))
1984 i->sysfs_path = s;
1985 else if (streq(name, "Where"))
1986 i->where = s;
1987 else if (streq(name, "What"))
1988 i->what = s;
1989 else if (streq(name, "Following"))
1990 i->following = s;
1991 }
1992
1993 break;
1994 }
1995
1996 case DBUS_TYPE_BOOLEAN: {
1997 dbus_bool_t b;
1998
1999 dbus_message_iter_get_basic(iter, &b);
2000
2001 if (streq(name, "Accept"))
2002 i->accept = b;
2003 else if (streq(name, "NeedDaemonReload"))
2004 i->need_daemon_reload = b;
2005
2006 break;
2007 }
2008
2009 case DBUS_TYPE_UINT32: {
2010 uint32_t u;
2011
2012 dbus_message_iter_get_basic(iter, &u);
2013
2014 if (streq(name, "MainPID")) {
2015 if (u > 0) {
2016 i->main_pid = (pid_t) u;
2017 i->running = true;
2018 }
2019 } else if (streq(name, "ControlPID"))
2020 i->control_pid = (pid_t) u;
2021 else if (streq(name, "ExecMainPID")) {
2022 if (u > 0)
2023 i->main_pid = (pid_t) u;
2024 } else if (streq(name, "NAccepted"))
2025 i->n_accepted = u;
2026 else if (streq(name, "NConnections"))
2027 i->n_connections = u;
2028
2029 break;
2030 }
2031
2032 case DBUS_TYPE_INT32: {
2033 int32_t j;
2034
2035 dbus_message_iter_get_basic(iter, &j);
2036
2037 if (streq(name, "ExecMainCode"))
2038 i->exit_code = (int) j;
2039 else if (streq(name, "ExecMainStatus"))
2040 i->exit_status = (int) j;
2041
2042 break;
2043 }
2044
2045 case DBUS_TYPE_UINT64: {
2046 uint64_t u;
2047
2048 dbus_message_iter_get_basic(iter, &u);
2049
2050 if (streq(name, "ExecMainStartTimestamp"))
2051 i->start_timestamp = (usec_t) u;
2052 else if (streq(name, "ExecMainExitTimestamp"))
2053 i->exit_timestamp = (usec_t) u;
2054 else if (streq(name, "ActiveEnterTimestamp"))
2055 i->active_enter_timestamp = (usec_t) u;
2056 else if (streq(name, "InactiveEnterTimestamp"))
2057 i->inactive_enter_timestamp = (usec_t) u;
2058 else if (streq(name, "InactiveExitTimestamp"))
2059 i->inactive_exit_timestamp = (usec_t) u;
2060 else if (streq(name, "ActiveExitTimestamp"))
2061 i->active_exit_timestamp = (usec_t) u;
2062
2063 break;
2064 }
2065
2066 case DBUS_TYPE_ARRAY: {
2067
2068 if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT &&
2069 startswith(name, "Exec")) {
2070 DBusMessageIter sub;
2071
2072 dbus_message_iter_recurse(iter, &sub);
2073 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2074 ExecStatusInfo *info;
2075 int r;
2076
2077 if (!(info = new0(ExecStatusInfo, 1)))
2078 return -ENOMEM;
2079
2080 if ((r = exec_status_info_deserialize(&sub, info)) < 0) {
2081 free(info);
2082 return r;
2083 }
2084
2085 LIST_PREPEND(ExecStatusInfo, exec, i->exec, info);
2086
2087 dbus_message_iter_next(&sub);
2088 }
2089 }
2090
2091 break;
2092 }
2093 }
2094
2095 return 0;
2096 }
2097
2098 static int print_property(const char *name, DBusMessageIter *iter) {
2099 assert(name);
2100 assert(iter);
2101
2102 /* This is a low-level property printer, see
2103 * print_status_info() for the nicer output */
2104
2105 if (arg_property && !strv_find(arg_property, name))
2106 return 0;
2107
2108 switch (dbus_message_iter_get_arg_type(iter)) {
2109
2110 case DBUS_TYPE_STRING: {
2111 const char *s;
2112 dbus_message_iter_get_basic(iter, &s);
2113
2114 if (arg_all || s[0])
2115 printf("%s=%s\n", name, s);
2116
2117 return 0;
2118 }
2119
2120 case DBUS_TYPE_BOOLEAN: {
2121 dbus_bool_t b;
2122 dbus_message_iter_get_basic(iter, &b);
2123 printf("%s=%s\n", name, yes_no(b));
2124
2125 return 0;
2126 }
2127
2128 case DBUS_TYPE_UINT64: {
2129 uint64_t u;
2130 dbus_message_iter_get_basic(iter, &u);
2131
2132 /* Yes, heuristics! But we can change this check
2133 * should it turn out to not be sufficient */
2134
2135 if (strstr(name, "Timestamp")) {
2136 char timestamp[FORMAT_TIMESTAMP_MAX], *t;
2137
2138 if ((t = format_timestamp(timestamp, sizeof(timestamp), u)) || arg_all)
2139 printf("%s=%s\n", name, strempty(t));
2140 } else if (strstr(name, "USec")) {
2141 char timespan[FORMAT_TIMESPAN_MAX];
2142
2143 printf("%s=%s\n", name, format_timespan(timespan, sizeof(timespan), u));
2144 } else
2145 printf("%s=%llu\n", name, (unsigned long long) u);
2146
2147 return 0;
2148 }
2149
2150 case DBUS_TYPE_UINT32: {
2151 uint32_t u;
2152 dbus_message_iter_get_basic(iter, &u);
2153
2154 if (strstr(name, "UMask") || strstr(name, "Mode"))
2155 printf("%s=%04o\n", name, u);
2156 else
2157 printf("%s=%u\n", name, (unsigned) u);
2158
2159 return 0;
2160 }
2161
2162 case DBUS_TYPE_INT32: {
2163 int32_t i;
2164 dbus_message_iter_get_basic(iter, &i);
2165
2166 printf("%s=%i\n", name, (int) i);
2167 return 0;
2168 }
2169
2170 case DBUS_TYPE_DOUBLE: {
2171 double d;
2172 dbus_message_iter_get_basic(iter, &d);
2173
2174 printf("%s=%g\n", name, d);
2175 return 0;
2176 }
2177
2178 case DBUS_TYPE_STRUCT: {
2179 DBusMessageIter sub;
2180 dbus_message_iter_recurse(iter, &sub);
2181
2182 if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_UINT32 && streq(name, "Job")) {
2183 uint32_t u;
2184
2185 dbus_message_iter_get_basic(&sub, &u);
2186
2187 if (u)
2188 printf("%s=%u\n", name, (unsigned) u);
2189 else if (arg_all)
2190 printf("%s=\n", name);
2191
2192 return 0;
2193 } else if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING && streq(name, "Unit")) {
2194 const char *s;
2195
2196 dbus_message_iter_get_basic(&sub, &s);
2197
2198 if (arg_all || s[0])
2199 printf("%s=%s\n", name, s);
2200
2201 return 0;
2202 }
2203
2204 break;
2205 }
2206
2207 case DBUS_TYPE_ARRAY:
2208
2209 if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRING) {
2210 DBusMessageIter sub;
2211 bool space = false;
2212
2213 dbus_message_iter_recurse(iter, &sub);
2214 if (arg_all ||
2215 dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
2216 printf("%s=", name);
2217
2218 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
2219 const char *s;
2220
2221 assert(dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING);
2222 dbus_message_iter_get_basic(&sub, &s);
2223 printf("%s%s", space ? " " : "", s);
2224
2225 space = true;
2226 dbus_message_iter_next(&sub);
2227 }
2228
2229 puts("");
2230 }
2231
2232 return 0;
2233
2234 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_BYTE) {
2235 DBusMessageIter sub;
2236
2237 dbus_message_iter_recurse(iter, &sub);
2238 if (arg_all ||
2239 dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
2240 printf("%s=", name);
2241
2242 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
2243 uint8_t u;
2244
2245 assert(dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_BYTE);
2246 dbus_message_iter_get_basic(&sub, &u);
2247 printf("%02x", u);
2248
2249 dbus_message_iter_next(&sub);
2250 }
2251
2252 puts("");
2253 }
2254
2255 return 0;
2256
2257 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Paths")) {
2258 DBusMessageIter sub, sub2;
2259
2260 dbus_message_iter_recurse(iter, &sub);
2261 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2262 const char *type, *path;
2263
2264 dbus_message_iter_recurse(&sub, &sub2);
2265
2266 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) >= 0 &&
2267 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, false) >= 0)
2268 printf("%s=%s\n", type, path);
2269
2270 dbus_message_iter_next(&sub);
2271 }
2272
2273 return 0;
2274
2275 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Timers")) {
2276 DBusMessageIter sub, sub2;
2277
2278 dbus_message_iter_recurse(iter, &sub);
2279 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2280 const char *base;
2281 uint64_t value, next_elapse;
2282
2283 dbus_message_iter_recurse(&sub, &sub2);
2284
2285 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &base, true) >= 0 &&
2286 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &value, true) >= 0 &&
2287 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &next_elapse, false) >= 0) {
2288 char timespan1[FORMAT_TIMESPAN_MAX], timespan2[FORMAT_TIMESPAN_MAX];
2289
2290 printf("%s={ value=%s ; next_elapse=%s }\n",
2291 base,
2292 format_timespan(timespan1, sizeof(timespan1), value),
2293 format_timespan(timespan2, sizeof(timespan2), next_elapse));
2294 }
2295
2296 dbus_message_iter_next(&sub);
2297 }
2298
2299 return 0;
2300
2301 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && startswith(name, "Exec")) {
2302 DBusMessageIter sub;
2303
2304 dbus_message_iter_recurse(iter, &sub);
2305 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2306 ExecStatusInfo info;
2307
2308 zero(info);
2309 if (exec_status_info_deserialize(&sub, &info) >= 0) {
2310 char timestamp1[FORMAT_TIMESTAMP_MAX], timestamp2[FORMAT_TIMESTAMP_MAX];
2311 char *t;
2312
2313 t = strv_join(info.argv, " ");
2314
2315 printf("%s={ path=%s ; argv[]=%s ; ignore=%s ; start_time=[%s] ; stop_time=[%s] ; pid=%u ; code=%s ; status=%i%s%s }\n",
2316 name,
2317 strna(info.path),
2318 strna(t),
2319 yes_no(info.ignore),
2320 strna(format_timestamp(timestamp1, sizeof(timestamp1), info.start_timestamp)),
2321 strna(format_timestamp(timestamp2, sizeof(timestamp2), info.exit_timestamp)),
2322 (unsigned) info. pid,
2323 sigchld_code_to_string(info.code),
2324 info.status,
2325 info.code == CLD_EXITED ? "" : "/",
2326 strempty(info.code == CLD_EXITED ? NULL : signal_to_string(info.status)));
2327
2328 free(t);
2329 }
2330
2331 free(info.path);
2332 strv_free(info.argv);
2333
2334 dbus_message_iter_next(&sub);
2335 }
2336
2337 return 0;
2338 }
2339
2340 break;
2341 }
2342
2343 if (arg_all)
2344 printf("%s=[unprintable]\n", name);
2345
2346 return 0;
2347 }
2348
2349 static int show_one(const char *verb, DBusConnection *bus, const char *path, bool show_properties, bool *new_line) {
2350 DBusMessage *m = NULL, *reply = NULL;
2351 const char *interface = "";
2352 int r;
2353 DBusError error;
2354 DBusMessageIter iter, sub, sub2, sub3;
2355 UnitStatusInfo info;
2356 ExecStatusInfo *p;
2357
2358 assert(bus);
2359 assert(path);
2360 assert(new_line);
2361
2362 zero(info);
2363 dbus_error_init(&error);
2364
2365 if (!(m = dbus_message_new_method_call(
2366 "org.freedesktop.systemd1",
2367 path,
2368 "org.freedesktop.DBus.Properties",
2369 "GetAll"))) {
2370 log_error("Could not allocate message.");
2371 r = -ENOMEM;
2372 goto finish;
2373 }
2374
2375 if (!dbus_message_append_args(m,
2376 DBUS_TYPE_STRING, &interface,
2377 DBUS_TYPE_INVALID)) {
2378 log_error("Could not append arguments to message.");
2379 r = -ENOMEM;
2380 goto finish;
2381 }
2382
2383 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2384 log_error("Failed to issue method call: %s", bus_error_message(&error));
2385 r = -EIO;
2386 goto finish;
2387 }
2388
2389 if (!dbus_message_iter_init(reply, &iter) ||
2390 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
2391 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_DICT_ENTRY) {
2392 log_error("Failed to parse reply.");
2393 r = -EIO;
2394 goto finish;
2395 }
2396
2397 dbus_message_iter_recurse(&iter, &sub);
2398
2399 if (*new_line)
2400 printf("\n");
2401
2402 *new_line = true;
2403
2404 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
2405 const char *name;
2406
2407 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_DICT_ENTRY) {
2408 log_error("Failed to parse reply.");
2409 r = -EIO;
2410 goto finish;
2411 }
2412
2413 dbus_message_iter_recurse(&sub, &sub2);
2414
2415 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0) {
2416 log_error("Failed to parse reply.");
2417 r = -EIO;
2418 goto finish;
2419 }
2420
2421 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT) {
2422 log_error("Failed to parse reply.");
2423 r = -EIO;
2424 goto finish;
2425 }
2426
2427 dbus_message_iter_recurse(&sub2, &sub3);
2428
2429 if (show_properties)
2430 r = print_property(name, &sub3);
2431 else
2432 r = status_property(name, &sub3, &info);
2433
2434 if (r < 0) {
2435 log_error("Failed to parse reply.");
2436 r = -EIO;
2437 goto finish;
2438 }
2439
2440 dbus_message_iter_next(&sub);
2441 }
2442
2443 r = 0;
2444
2445 if (!show_properties)
2446 print_status_info(&info);
2447
2448 if (!streq_ptr(info.active_state, "active") &&
2449 !streq_ptr(info.active_state, "reloading") &&
2450 streq(verb, "status"))
2451 /* According to LSB: "program not running" */
2452 r = 3;
2453
2454 while ((p = info.exec)) {
2455 LIST_REMOVE(ExecStatusInfo, exec, info.exec, p);
2456 exec_status_info_free(p);
2457 }
2458
2459 finish:
2460 if (m)
2461 dbus_message_unref(m);
2462
2463 if (reply)
2464 dbus_message_unref(reply);
2465
2466 dbus_error_free(&error);
2467
2468 return r;
2469 }
2470
2471 static int show(DBusConnection *bus, char **args, unsigned n) {
2472 DBusMessage *m = NULL, *reply = NULL;
2473 int r, ret = 0;
2474 DBusError error;
2475 unsigned i;
2476 bool show_properties, new_line = false;
2477
2478 assert(bus);
2479 assert(args);
2480
2481 dbus_error_init(&error);
2482
2483 show_properties = !streq(args[0], "status");
2484
2485 if (show_properties)
2486 pager_open();
2487
2488 if (show_properties && n <= 1) {
2489 /* If not argument is specified inspect the manager
2490 * itself */
2491
2492 ret = show_one(args[0], bus, "/org/freedesktop/systemd1", show_properties, &new_line);
2493 goto finish;
2494 }
2495
2496 for (i = 1; i < n; i++) {
2497 const char *path = NULL;
2498 uint32_t id;
2499
2500 if (safe_atou32(args[i], &id) < 0) {
2501
2502 /* Interpret as unit name */
2503
2504 if (!(m = dbus_message_new_method_call(
2505 "org.freedesktop.systemd1",
2506 "/org/freedesktop/systemd1",
2507 "org.freedesktop.systemd1.Manager",
2508 "LoadUnit"))) {
2509 log_error("Could not allocate message.");
2510 ret = -ENOMEM;
2511 goto finish;
2512 }
2513
2514 if (!dbus_message_append_args(m,
2515 DBUS_TYPE_STRING, &args[i],
2516 DBUS_TYPE_INVALID)) {
2517 log_error("Could not append arguments to message.");
2518 ret = -ENOMEM;
2519 goto finish;
2520 }
2521
2522 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2523
2524 if (!dbus_error_has_name(&error, DBUS_ERROR_ACCESS_DENIED)) {
2525 log_error("Failed to issue method call: %s", bus_error_message(&error));
2526 ret = -EIO;
2527 goto finish;
2528 }
2529
2530 dbus_error_free(&error);
2531
2532 dbus_message_unref(m);
2533 if (!(m = dbus_message_new_method_call(
2534 "org.freedesktop.systemd1",
2535 "/org/freedesktop/systemd1",
2536 "org.freedesktop.systemd1.Manager",
2537 "GetUnit"))) {
2538 log_error("Could not allocate message.");
2539 ret = -ENOMEM;
2540 goto finish;
2541 }
2542
2543 if (!dbus_message_append_args(m,
2544 DBUS_TYPE_STRING, &args[i],
2545 DBUS_TYPE_INVALID)) {
2546 log_error("Could not append arguments to message.");
2547 ret = -ENOMEM;
2548 goto finish;
2549 }
2550
2551 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2552 log_error("Failed to issue method call: %s", bus_error_message(&error));
2553
2554 if (dbus_error_has_name(&error, BUS_ERROR_NO_SUCH_UNIT))
2555 ret = 4; /* According to LSB: "program or service status is unknown" */
2556 else
2557 ret = -EIO;
2558 goto finish;
2559 }
2560 }
2561
2562 } else if (show_properties) {
2563
2564 /* Interpret as job id */
2565
2566 if (!(m = dbus_message_new_method_call(
2567 "org.freedesktop.systemd1",
2568 "/org/freedesktop/systemd1",
2569 "org.freedesktop.systemd1.Manager",
2570 "GetJob"))) {
2571 log_error("Could not allocate message.");
2572 ret = -ENOMEM;
2573 goto finish;
2574 }
2575
2576 if (!dbus_message_append_args(m,
2577 DBUS_TYPE_UINT32, &id,
2578 DBUS_TYPE_INVALID)) {
2579 log_error("Could not append arguments to message.");
2580 ret = -ENOMEM;
2581 goto finish;
2582 }
2583
2584 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2585 log_error("Failed to issue method call: %s", bus_error_message(&error));
2586 ret = -EIO;
2587 goto finish;
2588 }
2589 } else {
2590
2591 /* Interpret as PID */
2592
2593 if (!(m = dbus_message_new_method_call(
2594 "org.freedesktop.systemd1",
2595 "/org/freedesktop/systemd1",
2596 "org.freedesktop.systemd1.Manager",
2597 "GetUnitByPID"))) {
2598 log_error("Could not allocate message.");
2599 ret = -ENOMEM;
2600 goto finish;
2601 }
2602
2603 if (!dbus_message_append_args(m,
2604 DBUS_TYPE_UINT32, &id,
2605 DBUS_TYPE_INVALID)) {
2606 log_error("Could not append arguments to message.");
2607 ret = -ENOMEM;
2608 goto finish;
2609 }
2610
2611 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2612 log_error("Failed to issue method call: %s", bus_error_message(&error));
2613 ret = -EIO;
2614 goto finish;
2615 }
2616 }
2617
2618 if (!dbus_message_get_args(reply, &error,
2619 DBUS_TYPE_OBJECT_PATH, &path,
2620 DBUS_TYPE_INVALID)) {
2621 log_error("Failed to parse reply: %s", bus_error_message(&error));
2622 ret = -EIO;
2623 goto finish;
2624 }
2625
2626 if ((r = show_one(args[0], bus, path, show_properties, &new_line)) != 0)
2627 ret = r;
2628
2629 dbus_message_unref(m);
2630 dbus_message_unref(reply);
2631 m = reply = NULL;
2632 }
2633
2634 finish:
2635 if (m)
2636 dbus_message_unref(m);
2637
2638 if (reply)
2639 dbus_message_unref(reply);
2640
2641 dbus_error_free(&error);
2642
2643 return ret;
2644 }
2645
2646 static DBusHandlerResult monitor_filter(DBusConnection *connection, DBusMessage *message, void *data) {
2647 DBusError error;
2648 DBusMessage *m = NULL, *reply = NULL;
2649
2650 assert(connection);
2651 assert(message);
2652
2653 dbus_error_init(&error);
2654
2655 log_debug("Got D-Bus request: %s.%s() on %s",
2656 dbus_message_get_interface(message),
2657 dbus_message_get_member(message),
2658 dbus_message_get_path(message));
2659
2660 if (dbus_message_is_signal(message, DBUS_INTERFACE_LOCAL, "Disconnected")) {
2661 log_error("Warning! D-Bus connection terminated.");
2662 dbus_connection_close(connection);
2663
2664 } else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "UnitNew") ||
2665 dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "UnitRemoved")) {
2666 const char *id, *path;
2667
2668 if (!dbus_message_get_args(message, &error,
2669 DBUS_TYPE_STRING, &id,
2670 DBUS_TYPE_OBJECT_PATH, &path,
2671 DBUS_TYPE_INVALID))
2672 log_error("Failed to parse message: %s", bus_error_message(&error));
2673 else if (streq(dbus_message_get_member(message), "UnitNew"))
2674 printf("Unit %s added.\n", id);
2675 else
2676 printf("Unit %s removed.\n", id);
2677
2678 } else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "JobNew") ||
2679 dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "JobRemoved")) {
2680 uint32_t id;
2681 const char *path;
2682
2683 if (!dbus_message_get_args(message, &error,
2684 DBUS_TYPE_UINT32, &id,
2685 DBUS_TYPE_OBJECT_PATH, &path,
2686 DBUS_TYPE_INVALID))
2687 log_error("Failed to parse message: %s", bus_error_message(&error));
2688 else if (streq(dbus_message_get_member(message), "JobNew"))
2689 printf("Job %u added.\n", id);
2690 else
2691 printf("Job %u removed.\n", id);
2692
2693
2694 } else if (dbus_message_is_signal(message, "org.freedesktop.DBus.Properties", "PropertiesChanged")) {
2695
2696 const char *path, *interface, *property = "Id";
2697 DBusMessageIter iter, sub;
2698
2699 path = dbus_message_get_path(message);
2700
2701 if (!dbus_message_get_args(message, &error,
2702 DBUS_TYPE_STRING, &interface,
2703 DBUS_TYPE_INVALID)) {
2704 log_error("Failed to parse message: %s", bus_error_message(&error));
2705 goto finish;
2706 }
2707
2708 if (!streq(interface, "org.freedesktop.systemd1.Job") &&
2709 !streq(interface, "org.freedesktop.systemd1.Unit"))
2710 goto finish;
2711
2712 if (!(m = dbus_message_new_method_call(
2713 "org.freedesktop.systemd1",
2714 path,
2715 "org.freedesktop.DBus.Properties",
2716 "Get"))) {
2717 log_error("Could not allocate message.");
2718 goto oom;
2719 }
2720
2721 if (!dbus_message_append_args(m,
2722 DBUS_TYPE_STRING, &interface,
2723 DBUS_TYPE_STRING, &property,
2724 DBUS_TYPE_INVALID)) {
2725 log_error("Could not append arguments to message.");
2726 goto finish;
2727 }
2728
2729 if (!(reply = dbus_connection_send_with_reply_and_block(connection, m, -1, &error))) {
2730 log_error("Failed to issue method call: %s", bus_error_message(&error));
2731 goto finish;
2732 }
2733
2734 if (!dbus_message_iter_init(reply, &iter) ||
2735 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
2736 log_error("Failed to parse reply.");
2737 goto finish;
2738 }
2739
2740 dbus_message_iter_recurse(&iter, &sub);
2741
2742 if (streq(interface, "org.freedesktop.systemd1.Unit")) {
2743 const char *id;
2744
2745 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
2746 log_error("Failed to parse reply.");
2747 goto finish;
2748 }
2749
2750 dbus_message_iter_get_basic(&sub, &id);
2751 printf("Unit %s changed.\n", id);
2752 } else {
2753 uint32_t id;
2754
2755 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_UINT32) {
2756 log_error("Failed to parse reply.");
2757 goto finish;
2758 }
2759
2760 dbus_message_iter_get_basic(&sub, &id);
2761 printf("Job %u changed.\n", id);
2762 }
2763 }
2764
2765 finish:
2766 if (m)
2767 dbus_message_unref(m);
2768
2769 if (reply)
2770 dbus_message_unref(reply);
2771
2772 dbus_error_free(&error);
2773 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
2774
2775 oom:
2776 if (m)
2777 dbus_message_unref(m);
2778
2779 if (reply)
2780 dbus_message_unref(reply);
2781
2782 dbus_error_free(&error);
2783 return DBUS_HANDLER_RESULT_NEED_MEMORY;
2784 }
2785
2786 static int monitor(DBusConnection *bus, char **args, unsigned n) {
2787 DBusMessage *m = NULL, *reply = NULL;
2788 DBusError error;
2789 int r;
2790
2791 dbus_error_init(&error);
2792
2793 if (!private_bus) {
2794 dbus_bus_add_match(bus,
2795 "type='signal',"
2796 "sender='org.freedesktop.systemd1',"
2797 "interface='org.freedesktop.systemd1.Manager',"
2798 "path='/org/freedesktop/systemd1'",
2799 &error);
2800
2801 if (dbus_error_is_set(&error)) {
2802 log_error("Failed to add match: %s", bus_error_message(&error));
2803 r = -EIO;
2804 goto finish;
2805 }
2806
2807 dbus_bus_add_match(bus,
2808 "type='signal',"
2809 "sender='org.freedesktop.systemd1',"
2810 "interface='org.freedesktop.DBus.Properties',"
2811 "member='PropertiesChanged'",
2812 &error);
2813
2814 if (dbus_error_is_set(&error)) {
2815 log_error("Failed to add match: %s", bus_error_message(&error));
2816 r = -EIO;
2817 goto finish;
2818 }
2819 }
2820
2821 if (!dbus_connection_add_filter(bus, monitor_filter, NULL, NULL)) {
2822 log_error("Failed to add filter.");
2823 r = -ENOMEM;
2824 goto finish;
2825 }
2826
2827 if (!(m = dbus_message_new_method_call(
2828 "org.freedesktop.systemd1",
2829 "/org/freedesktop/systemd1",
2830 "org.freedesktop.systemd1.Manager",
2831 "Subscribe"))) {
2832 log_error("Could not allocate message.");
2833 r = -ENOMEM;
2834 goto finish;
2835 }
2836
2837 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2838 log_error("Failed to issue method call: %s", bus_error_message(&error));
2839 r = -EIO;
2840 goto finish;
2841 }
2842
2843 while (dbus_connection_read_write_dispatch(bus, -1))
2844 ;
2845
2846 r = 0;
2847
2848 finish:
2849
2850 /* This is slightly dirty, since we don't undo the filter or the matches. */
2851
2852 if (m)
2853 dbus_message_unref(m);
2854
2855 if (reply)
2856 dbus_message_unref(reply);
2857
2858 dbus_error_free(&error);
2859
2860 return r;
2861 }
2862
2863 static int dump(DBusConnection *bus, char **args, unsigned n) {
2864 DBusMessage *m = NULL, *reply = NULL;
2865 DBusError error;
2866 int r;
2867 const char *text;
2868
2869 dbus_error_init(&error);
2870
2871 pager_open();
2872
2873 if (!(m = dbus_message_new_method_call(
2874 "org.freedesktop.systemd1",
2875 "/org/freedesktop/systemd1",
2876 "org.freedesktop.systemd1.Manager",
2877 "Dump"))) {
2878 log_error("Could not allocate message.");
2879 return -ENOMEM;
2880 }
2881
2882 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2883 log_error("Failed to issue method call: %s", bus_error_message(&error));
2884 r = -EIO;
2885 goto finish;
2886 }
2887
2888 if (!dbus_message_get_args(reply, &error,
2889 DBUS_TYPE_STRING, &text,
2890 DBUS_TYPE_INVALID)) {
2891 log_error("Failed to parse reply: %s", bus_error_message(&error));
2892 r = -EIO;
2893 goto finish;
2894 }
2895
2896 fputs(text, stdout);
2897
2898 r = 0;
2899
2900 finish:
2901 if (m)
2902 dbus_message_unref(m);
2903
2904 if (reply)
2905 dbus_message_unref(reply);
2906
2907 dbus_error_free(&error);
2908
2909 return r;
2910 }
2911
2912 static int snapshot(DBusConnection *bus, char **args, unsigned n) {
2913 DBusMessage *m = NULL, *reply = NULL;
2914 DBusError error;
2915 int r;
2916 const char *name = "", *path, *id;
2917 dbus_bool_t cleanup = FALSE;
2918 DBusMessageIter iter, sub;
2919 const char
2920 *interface = "org.freedesktop.systemd1.Unit",
2921 *property = "Id";
2922
2923 dbus_error_init(&error);
2924
2925 if (!(m = dbus_message_new_method_call(
2926 "org.freedesktop.systemd1",
2927 "/org/freedesktop/systemd1",
2928 "org.freedesktop.systemd1.Manager",
2929 "CreateSnapshot"))) {
2930 log_error("Could not allocate message.");
2931 return -ENOMEM;
2932 }
2933
2934 if (n > 1)
2935 name = args[1];
2936
2937 if (!dbus_message_append_args(m,
2938 DBUS_TYPE_STRING, &name,
2939 DBUS_TYPE_BOOLEAN, &cleanup,
2940 DBUS_TYPE_INVALID)) {
2941 log_error("Could not append arguments to message.");
2942 r = -ENOMEM;
2943 goto finish;
2944 }
2945
2946 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2947 log_error("Failed to issue method call: %s", bus_error_message(&error));
2948 r = -EIO;
2949 goto finish;
2950 }
2951
2952 if (!dbus_message_get_args(reply, &error,
2953 DBUS_TYPE_OBJECT_PATH, &path,
2954 DBUS_TYPE_INVALID)) {
2955 log_error("Failed to parse reply: %s", bus_error_message(&error));
2956 r = -EIO;
2957 goto finish;
2958 }
2959
2960 dbus_message_unref(m);
2961 if (!(m = dbus_message_new_method_call(
2962 "org.freedesktop.systemd1",
2963 path,
2964 "org.freedesktop.DBus.Properties",
2965 "Get"))) {
2966 log_error("Could not allocate message.");
2967 return -ENOMEM;
2968 }
2969
2970 if (!dbus_message_append_args(m,
2971 DBUS_TYPE_STRING, &interface,
2972 DBUS_TYPE_STRING, &property,
2973 DBUS_TYPE_INVALID)) {
2974 log_error("Could not append arguments to message.");
2975 r = -ENOMEM;
2976 goto finish;
2977 }
2978
2979 dbus_message_unref(reply);
2980 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2981 log_error("Failed to issue method call: %s", bus_error_message(&error));
2982 r = -EIO;
2983 goto finish;
2984 }
2985
2986 if (!dbus_message_iter_init(reply, &iter) ||
2987 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
2988 log_error("Failed to parse reply.");
2989 r = -EIO;
2990 goto finish;
2991 }
2992
2993 dbus_message_iter_recurse(&iter, &sub);
2994
2995 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
2996 log_error("Failed to parse reply.");
2997 r = -EIO;
2998 goto finish;
2999 }
3000
3001 dbus_message_iter_get_basic(&sub, &id);
3002
3003 if (!arg_quiet)
3004 puts(id);
3005 r = 0;
3006
3007 finish:
3008 if (m)
3009 dbus_message_unref(m);
3010
3011 if (reply)
3012 dbus_message_unref(reply);
3013
3014 dbus_error_free(&error);
3015
3016 return r;
3017 }
3018
3019 static int delete_snapshot(DBusConnection *bus, char **args, unsigned n) {
3020 DBusMessage *m = NULL, *reply = NULL;
3021 int r;
3022 DBusError error;
3023 unsigned i;
3024
3025 assert(bus);
3026 assert(args);
3027
3028 dbus_error_init(&error);
3029
3030 for (i = 1; i < n; i++) {
3031 const char *path = NULL;
3032
3033 if (!(m = dbus_message_new_method_call(
3034 "org.freedesktop.systemd1",
3035 "/org/freedesktop/systemd1",
3036 "org.freedesktop.systemd1.Manager",
3037 "GetUnit"))) {
3038 log_error("Could not allocate message.");
3039 r = -ENOMEM;
3040 goto finish;
3041 }
3042
3043 if (!dbus_message_append_args(m,
3044 DBUS_TYPE_STRING, &args[i],
3045 DBUS_TYPE_INVALID)) {
3046 log_error("Could not append arguments to message.");
3047 r = -ENOMEM;
3048 goto finish;
3049 }
3050
3051 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3052 log_error("Failed to issue method call: %s", bus_error_message(&error));
3053 r = -EIO;
3054 goto finish;
3055 }
3056
3057 if (!dbus_message_get_args(reply, &error,
3058 DBUS_TYPE_OBJECT_PATH, &path,
3059 DBUS_TYPE_INVALID)) {
3060 log_error("Failed to parse reply: %s", bus_error_message(&error));
3061 r = -EIO;
3062 goto finish;
3063 }
3064
3065 dbus_message_unref(m);
3066 if (!(m = dbus_message_new_method_call(
3067 "org.freedesktop.systemd1",
3068 path,
3069 "org.freedesktop.systemd1.Snapshot",
3070 "Remove"))) {
3071 log_error("Could not allocate message.");
3072 r = -ENOMEM;
3073 goto finish;
3074 }
3075
3076 dbus_message_unref(reply);
3077 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3078 log_error("Failed to issue method call: %s", bus_error_message(&error));
3079 r = -EIO;
3080 goto finish;
3081 }
3082
3083 dbus_message_unref(m);
3084 dbus_message_unref(reply);
3085 m = reply = NULL;
3086 }
3087
3088 r = 0;
3089
3090 finish:
3091 if (m)
3092 dbus_message_unref(m);
3093
3094 if (reply)
3095 dbus_message_unref(reply);
3096
3097 dbus_error_free(&error);
3098
3099 return r;
3100 }
3101
3102 static int daemon_reload(DBusConnection *bus, char **args, unsigned n) {
3103 DBusMessage *m = NULL, *reply = NULL;
3104 DBusError error;
3105 int r;
3106 const char *method;
3107
3108 dbus_error_init(&error);
3109
3110 if (arg_action == ACTION_RELOAD)
3111 method = "Reload";
3112 else if (arg_action == ACTION_REEXEC)
3113 method = "Reexecute";
3114 else {
3115 assert(arg_action == ACTION_SYSTEMCTL);
3116
3117 method =
3118 streq(args[0], "clear-jobs") ||
3119 streq(args[0], "cancel") ? "ClearJobs" :
3120 streq(args[0], "daemon-reexec") ? "Reexecute" :
3121 streq(args[0], "reset-failed") ? "ResetFailed" :
3122 streq(args[0], "halt") ? "Halt" :
3123 streq(args[0], "poweroff") ? "PowerOff" :
3124 streq(args[0], "reboot") ? "Reboot" :
3125 streq(args[0], "kexec") ? "KExec" :
3126 streq(args[0], "exit") ? "Exit" :
3127 /* "daemon-reload" */ "Reload";
3128 }
3129
3130 if (!(m = dbus_message_new_method_call(
3131 "org.freedesktop.systemd1",
3132 "/org/freedesktop/systemd1",
3133 "org.freedesktop.systemd1.Manager",
3134 method))) {
3135 log_error("Could not allocate message.");
3136 return -ENOMEM;
3137 }
3138
3139 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3140
3141 if (arg_action != ACTION_SYSTEMCTL && error_is_no_service(&error)) {
3142 /* There's always a fallback possible for
3143 * legacy actions. */
3144 r = -EADDRNOTAVAIL;
3145 goto finish;
3146 }
3147
3148 log_error("Failed to issue method call: %s", bus_error_message(&error));
3149 r = -EIO;
3150 goto finish;
3151 }
3152
3153 r = 0;
3154
3155 finish:
3156 if (m)
3157 dbus_message_unref(m);
3158
3159 if (reply)
3160 dbus_message_unref(reply);
3161
3162 dbus_error_free(&error);
3163
3164 return r;
3165 }
3166
3167 static int reset_failed(DBusConnection *bus, char **args, unsigned n) {
3168 DBusMessage *m = NULL, *reply = NULL;
3169 unsigned i;
3170 int r;
3171 DBusError error;
3172
3173 assert(bus);
3174 dbus_error_init(&error);
3175
3176 if (n <= 1)
3177 return daemon_reload(bus, args, n);
3178
3179 for (i = 1; i < n; i++) {
3180
3181 if (!(m = dbus_message_new_method_call(
3182 "org.freedesktop.systemd1",
3183 "/org/freedesktop/systemd1",
3184 "org.freedesktop.systemd1.Manager",
3185 "ResetFailedUnit"))) {
3186 log_error("Could not allocate message.");
3187 r = -ENOMEM;
3188 goto finish;
3189 }
3190
3191 if (!dbus_message_append_args(m,
3192 DBUS_TYPE_STRING, args + i,
3193 DBUS_TYPE_INVALID)) {
3194 log_error("Could not append arguments to message.");
3195 r = -ENOMEM;
3196 goto finish;
3197 }
3198
3199 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3200 log_error("Failed to issue method call: %s", bus_error_message(&error));
3201 r = -EIO;
3202 goto finish;
3203 }
3204
3205 dbus_message_unref(m);
3206 dbus_message_unref(reply);
3207 m = reply = NULL;
3208 }
3209
3210 r = 0;
3211
3212 finish:
3213 if (m)
3214 dbus_message_unref(m);
3215
3216 if (reply)
3217 dbus_message_unref(reply);
3218
3219 dbus_error_free(&error);
3220
3221 return r;
3222 }
3223
3224 static int show_enviroment(DBusConnection *bus, char **args, unsigned n) {
3225 DBusMessage *m = NULL, *reply = NULL;
3226 DBusError error;
3227 DBusMessageIter iter, sub, sub2;
3228 int r;
3229 const char
3230 *interface = "org.freedesktop.systemd1.Manager",
3231 *property = "Environment";
3232
3233 dbus_error_init(&error);
3234
3235 pager_open();
3236
3237 if (!(m = dbus_message_new_method_call(
3238 "org.freedesktop.systemd1",
3239 "/org/freedesktop/systemd1",
3240 "org.freedesktop.DBus.Properties",
3241 "Get"))) {
3242 log_error("Could not allocate message.");
3243 return -ENOMEM;
3244 }
3245
3246 if (!dbus_message_append_args(m,
3247 DBUS_TYPE_STRING, &interface,
3248 DBUS_TYPE_STRING, &property,
3249 DBUS_TYPE_INVALID)) {
3250 log_error("Could not append arguments to message.");
3251 r = -ENOMEM;
3252 goto finish;
3253 }
3254
3255 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3256 log_error("Failed to issue method call: %s", bus_error_message(&error));
3257 r = -EIO;
3258 goto finish;
3259 }
3260
3261 if (!dbus_message_iter_init(reply, &iter) ||
3262 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
3263 log_error("Failed to parse reply.");
3264 r = -EIO;
3265 goto finish;
3266 }
3267
3268 dbus_message_iter_recurse(&iter, &sub);
3269
3270 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_ARRAY ||
3271 dbus_message_iter_get_element_type(&sub) != DBUS_TYPE_STRING) {
3272 log_error("Failed to parse reply.");
3273 r = -EIO;
3274 goto finish;
3275 }
3276
3277 dbus_message_iter_recurse(&sub, &sub2);
3278
3279 while (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_INVALID) {
3280 const char *text;
3281
3282 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_STRING) {
3283 log_error("Failed to parse reply.");
3284 r = -EIO;
3285 goto finish;
3286 }
3287
3288 dbus_message_iter_get_basic(&sub2, &text);
3289 printf("%s\n", text);
3290
3291 dbus_message_iter_next(&sub2);
3292 }
3293
3294 r = 0;
3295
3296 finish:
3297 if (m)
3298 dbus_message_unref(m);
3299
3300 if (reply)
3301 dbus_message_unref(reply);
3302
3303 dbus_error_free(&error);
3304
3305 return r;
3306 }
3307
3308 static int set_environment(DBusConnection *bus, char **args, unsigned n) {
3309 DBusMessage *m = NULL, *reply = NULL;
3310 DBusError error;
3311 int r;
3312 const char *method;
3313 DBusMessageIter iter, sub;
3314 unsigned i;
3315
3316 dbus_error_init(&error);
3317
3318 method = streq(args[0], "set-environment")
3319 ? "SetEnvironment"
3320 : "UnsetEnvironment";
3321
3322 if (!(m = dbus_message_new_method_call(
3323 "org.freedesktop.systemd1",
3324 "/org/freedesktop/systemd1",
3325 "org.freedesktop.systemd1.Manager",
3326 method))) {
3327
3328 log_error("Could not allocate message.");
3329 return -ENOMEM;
3330 }
3331
3332 dbus_message_iter_init_append(m, &iter);
3333
3334 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "s", &sub)) {
3335 log_error("Could not append arguments to message.");
3336 r = -ENOMEM;
3337 goto finish;
3338 }
3339
3340 for (i = 1; i < n; i++)
3341 if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &args[i])) {
3342 log_error("Could not append arguments to message.");
3343 r = -ENOMEM;
3344 goto finish;
3345 }
3346
3347 if (!dbus_message_iter_close_container(&iter, &sub)) {
3348 log_error("Could not append arguments to message.");
3349 r = -ENOMEM;
3350 goto finish;
3351 }
3352
3353 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3354 log_error("Failed to issue method call: %s", bus_error_message(&error));
3355 r = -EIO;
3356 goto finish;
3357 }
3358
3359 r = 0;
3360
3361 finish:
3362 if (m)
3363 dbus_message_unref(m);
3364
3365 if (reply)
3366 dbus_message_unref(reply);
3367
3368 dbus_error_free(&error);
3369
3370 return r;
3371 }
3372
3373 typedef struct {
3374 char *name;
3375 char *path;
3376
3377 char **aliases;
3378 char **wanted_by;
3379 } InstallInfo;
3380
3381 static Hashmap *will_install = NULL, *have_installed = NULL;
3382 static Set *remove_symlinks_to = NULL;
3383 static unsigned n_symlinks = 0;
3384
3385 static void install_info_free(InstallInfo *i) {
3386 assert(i);
3387
3388 free(i->name);
3389 free(i->path);
3390 strv_free(i->aliases);
3391 strv_free(i->wanted_by);
3392 free(i);
3393 }
3394
3395 static void install_info_hashmap_free(Hashmap *m) {
3396 InstallInfo *i;
3397
3398 while ((i = hashmap_steal_first(m)))
3399 install_info_free(i);
3400
3401 hashmap_free(m);
3402 }
3403
3404 static int install_info_add(const char *name) {
3405 InstallInfo *i;
3406 int r;
3407
3408 assert(will_install);
3409
3410 if (!unit_name_is_valid_no_type(name, true)) {
3411 log_warning("Unit name %s is not a valid unit name.", name);
3412 return -EINVAL;
3413 }
3414
3415 if (hashmap_get(have_installed, name) ||
3416 hashmap_get(will_install, name))
3417 return 0;
3418
3419 if (!(i = new0(InstallInfo, 1))) {
3420 r = -ENOMEM;
3421 goto fail;
3422 }
3423
3424 if (!(i->name = strdup(name))) {
3425 r = -ENOMEM;
3426 goto fail;
3427 }
3428
3429 if ((r = hashmap_put(will_install, i->name, i)) < 0)
3430 goto fail;
3431
3432 return 0;
3433
3434 fail:
3435 if (i)
3436 install_info_free(i);
3437
3438 return r;
3439 }
3440
3441 static int config_parse_also(
3442 const char *filename,
3443 unsigned line,
3444 const char *section,
3445 const char *lvalue,
3446 const char *rvalue,
3447 void *data,
3448 void *userdata) {
3449
3450 char *w;
3451 size_t l;
3452 char *state;
3453
3454 assert(filename);
3455 assert(lvalue);
3456 assert(rvalue);
3457
3458 FOREACH_WORD_QUOTED(w, l, rvalue, state) {
3459 char *n;
3460 int r;
3461
3462 if (!(n = strndup(w, l)))
3463 return -ENOMEM;
3464
3465 if ((r = install_info_add(n)) < 0) {
3466 log_warning("Cannot install unit %s: %s", n, strerror(-r));
3467 free(n);
3468 return r;
3469 }
3470
3471 free(n);
3472 }
3473
3474 return 0;
3475 }
3476
3477 static int mark_symlink_for_removal(const char *p) {
3478 char *n;
3479 int r;
3480
3481 assert(p);
3482 assert(path_is_absolute(p));
3483
3484 if (!remove_symlinks_to)
3485 return 0;
3486
3487 if (!(n = strdup(p)))
3488 return -ENOMEM;
3489
3490 path_kill_slashes(n);
3491
3492 if ((r = set_put(remove_symlinks_to, n)) < 0) {
3493 free(n);
3494 return r == -EEXIST ? 0 : r;
3495 }
3496
3497 return 0;
3498 }
3499
3500 static int remove_marked_symlinks_fd(int fd, const char *config_path, const char *root, bool *deleted) {
3501 int r = 0;
3502 DIR *d;
3503 struct dirent *de;
3504
3505 assert(fd >= 0);
3506 assert(root);
3507 assert(deleted);
3508
3509 if (!(d = fdopendir(fd))) {
3510 close_nointr_nofail(fd);
3511 return -errno;
3512 }
3513
3514 rewinddir(d);
3515
3516 while ((de = readdir(d))) {
3517 bool is_dir = false, is_link = false;
3518
3519 if (ignore_file(de->d_name))
3520 continue;
3521
3522 if (de->d_type == DT_LNK)
3523 is_link = true;
3524 else if (de->d_type == DT_DIR)
3525 is_dir = true;
3526 else if (de->d_type == DT_UNKNOWN) {
3527 struct stat st;
3528
3529 if (fstatat(fd, de->d_name, &st, AT_SYMLINK_NOFOLLOW) < 0) {
3530 log_error("Failed to stat %s/%s: %m", root, de->d_name);
3531
3532 if (r == 0)
3533 r = -errno;
3534 continue;
3535 }
3536
3537 is_link = S_ISLNK(st.st_mode);
3538 is_dir = S_ISDIR(st.st_mode);
3539 } else
3540 continue;
3541
3542 if (is_dir) {
3543 int nfd, q;
3544 char *p;
3545
3546 if ((nfd = openat(fd, de->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW)) < 0) {
3547 log_error("Failed to open %s/%s: %m", root, de->d_name);
3548
3549 if (r == 0)
3550 r = -errno;
3551 continue;
3552 }
3553
3554 if (asprintf(&p, "%s/%s", root, de->d_name) < 0) {
3555 log_error("Failed to allocate directory string.");
3556 close_nointr_nofail(nfd);
3557 r = -ENOMEM;
3558 break;
3559 }
3560
3561 /* This will close nfd, regardless whether it succeeds or not */
3562 q = remove_marked_symlinks_fd(nfd, config_path, p, deleted);
3563 free(p);
3564
3565 if (r == 0)
3566 r = q;
3567
3568 } else if (is_link) {
3569 char *p, *dest, *c;
3570 int q;
3571
3572 if (asprintf(&p, "%s/%s", root, de->d_name) < 0) {
3573 log_error("Failed to allocate symlink string.");
3574 r = -ENOMEM;
3575 break;
3576 }
3577
3578 if ((q = readlink_and_make_absolute(p, &dest)) < 0) {
3579 log_error("Cannot read symlink %s: %s", p, strerror(-q));
3580 free(p);
3581
3582 if (r == 0)
3583 r = q;
3584 continue;
3585 }
3586
3587 if ((c = canonicalize_file_name(dest))) {
3588 /* This might fail if the destination
3589 * is already removed */
3590
3591 free(dest);
3592 dest = c;
3593 }
3594
3595 path_kill_slashes(dest);
3596 if (set_get(remove_symlinks_to, dest)) {
3597
3598 if (!arg_quiet)
3599 log_info("rm '%s'", p);
3600
3601 if (unlink(p) < 0) {
3602 log_error("Cannot unlink symlink %s: %m", p);
3603
3604 if (r == 0)
3605 r = -errno;
3606 } else {
3607 rmdir_parents(p, config_path);
3608 path_kill_slashes(p);
3609
3610 if (!set_get(remove_symlinks_to, p)) {
3611
3612 if ((r = mark_symlink_for_removal(p)) < 0) {
3613 if (r == 0)
3614 r = q;
3615 } else
3616 *deleted = true;
3617 }
3618 }
3619 }
3620
3621 free(p);
3622 free(dest);
3623 }
3624 }
3625
3626 closedir(d);
3627
3628 return r;
3629 }
3630
3631 static int remove_marked_symlinks(const char *config_path) {
3632 int fd, r = 0;
3633 bool deleted;
3634
3635 assert(config_path);
3636
3637 if (set_size(remove_symlinks_to) <= 0)
3638 return 0;
3639
3640 if ((fd = open(config_path, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW)) < 0)
3641 return -errno;
3642
3643 do {
3644 int q, cfd;
3645 deleted = false;
3646
3647 if ((cfd = dup(fd)) < 0) {
3648 r = -errno;
3649 break;
3650 }
3651
3652 /* This takes possession of cfd and closes it */
3653 if ((q = remove_marked_symlinks_fd(cfd, config_path, config_path, &deleted)) < 0) {
3654 if (r == 0)
3655 r = q;
3656 }
3657 } while (deleted);
3658
3659 close_nointr_nofail(fd);
3660
3661 return r;
3662 }
3663
3664 static int create_symlink(const char *verb, const char *old_path, const char *new_path) {
3665 int r;
3666
3667 assert(old_path);
3668 assert(new_path);
3669 assert(verb);
3670
3671 if (streq(verb, "enable")) {
3672 char *dest;
3673
3674 mkdir_parents(new_path, 0755);
3675
3676 if (symlink(old_path, new_path) >= 0) {
3677
3678 if (!arg_quiet)
3679 log_info("ln -s '%s' '%s'", old_path, new_path);
3680
3681 return 0;
3682 }
3683
3684 if (errno != EEXIST) {
3685 log_error("Cannot link %s to %s: %m", old_path, new_path);
3686 return -errno;
3687 }
3688
3689 if ((r = readlink_and_make_absolute(new_path, &dest)) < 0) {
3690
3691 if (errno == EINVAL) {
3692 log_error("Cannot link %s to %s, file exists already and is not a symlink.", old_path, new_path);
3693 return -EEXIST;
3694 }
3695
3696 log_error("readlink() failed: %s", strerror(-r));
3697 return r;
3698 }
3699
3700 if (streq(dest, old_path)) {
3701 free(dest);
3702 return 0;
3703 }
3704
3705 if (!arg_force) {
3706 log_error("Cannot link %s to %s, symlink exists already and points to %s.", old_path, new_path, dest);
3707 free(dest);
3708 return -EEXIST;
3709 }
3710
3711 free(dest);
3712 unlink(new_path);
3713
3714 if (!arg_quiet)
3715 log_info("ln -s '%s' '%s'", old_path, new_path);
3716
3717 if (symlink(old_path, new_path) >= 0)
3718 return 0;
3719
3720 log_error("Cannot link %s to %s: %m", old_path, new_path);
3721 return -errno;
3722
3723 } else if (streq(verb, "disable")) {
3724 char *dest;
3725
3726 if ((r = mark_symlink_for_removal(old_path)) < 0)
3727 return r;
3728
3729 if ((r = readlink_and_make_absolute(new_path, &dest)) < 0) {
3730 if (errno == ENOENT)
3731 return 0;
3732
3733 if (errno == EINVAL) {
3734 log_warning("File %s not a symlink, ignoring.", old_path);
3735 return 0;
3736 }
3737
3738 log_error("readlink() failed: %s", strerror(-r));
3739 return r;
3740 }
3741
3742 if (!streq(dest, old_path)) {
3743 log_warning("File %s not a symlink to %s but points to %s, ignoring.", new_path, old_path, dest);
3744 free(dest);
3745 return 0;
3746 }
3747
3748 free(dest);
3749
3750 if ((r = mark_symlink_for_removal(new_path)) < 0)
3751 return r;
3752
3753 if (!arg_quiet)
3754 log_info("rm '%s'", new_path);
3755
3756 if (unlink(new_path) >= 0)
3757 return 0;
3758
3759 log_error("Cannot unlink %s: %m", new_path);
3760 return -errno;
3761
3762 } else if (streq(verb, "is-enabled")) {
3763 char *dest;
3764
3765 if ((r = readlink_and_make_absolute(new_path, &dest)) < 0) {
3766
3767 if (errno == ENOENT || errno == EINVAL)
3768 return 0;
3769
3770 log_error("readlink() failed: %s", strerror(-r));
3771 return r;
3772 }
3773
3774 if (streq(dest, old_path)) {
3775 free(dest);
3776 return 1;
3777 }
3778
3779 return 0;
3780 }
3781
3782 assert_not_reached("Unknown action.");
3783 }
3784
3785 static int install_info_symlink_alias(const char *verb, InstallInfo *i, const char *config_path) {
3786 char **s;
3787 char *alias_path = NULL;
3788 int r;
3789
3790 assert(verb);
3791 assert(i);
3792 assert(config_path);
3793
3794 STRV_FOREACH(s, i->aliases) {
3795
3796 free(alias_path);
3797 if (!(alias_path = path_make_absolute(*s, config_path))) {
3798 log_error("Out of memory");
3799 r = -ENOMEM;
3800 goto finish;
3801 }
3802
3803 if ((r = create_symlink(verb, i->path, alias_path)) != 0)
3804 goto finish;
3805
3806 if (streq(verb, "disable"))
3807 rmdir_parents(alias_path, config_path);
3808 }
3809 r = 0;
3810
3811 finish:
3812 free(alias_path);
3813
3814 return r;
3815 }
3816
3817 static int install_info_symlink_wants(const char *verb, InstallInfo *i, const char *config_path) {
3818 char **s;
3819 char *alias_path = NULL;
3820 int r;
3821
3822 assert(verb);
3823 assert(i);
3824 assert(config_path);
3825
3826 STRV_FOREACH(s, i->wanted_by) {
3827 if (!unit_name_is_valid_no_type(*s, true)) {
3828 log_error("Invalid name %s.", *s);
3829 r = -EINVAL;
3830 goto finish;
3831 }
3832
3833 free(alias_path);
3834 alias_path = NULL;
3835
3836 if (asprintf(&alias_path, "%s/%s.wants/%s", config_path, *s, i->name) < 0) {
3837 log_error("Out of memory");
3838 r = -ENOMEM;
3839 goto finish;
3840 }
3841
3842 if ((r = create_symlink(verb, i->path, alias_path)) != 0)
3843 goto finish;
3844
3845 if (streq(verb, "disable"))
3846 rmdir_parents(alias_path, config_path);
3847 }
3848
3849 r = 0;
3850
3851 finish:
3852 free(alias_path);
3853
3854 return r;
3855 }
3856
3857 static int install_info_apply(const char *verb, LookupPaths *paths, InstallInfo *i, const char *config_path) {
3858
3859 const ConfigItem items[] = {
3860 { "Alias", config_parse_strv, &i->aliases, "Install" },
3861 { "WantedBy", config_parse_strv, &i->wanted_by, "Install" },
3862 { "Also", config_parse_also, NULL, "Install" },
3863
3864 { NULL, NULL, NULL, NULL }
3865 };
3866
3867 char **p;
3868 char *filename = NULL;
3869 FILE *f = NULL;
3870 int r;
3871
3872 assert(paths);
3873 assert(i);
3874
3875 STRV_FOREACH(p, paths->unit_path) {
3876 int fd;
3877
3878 if (!(filename = path_make_absolute(i->name, *p))) {
3879 log_error("Out of memory");
3880 return -ENOMEM;
3881 }
3882
3883 /* Ensure that we don't follow symlinks */
3884 if ((fd = open(filename, O_RDONLY|O_CLOEXEC|O_NOFOLLOW|O_NOCTTY)) >= 0)
3885 if ((f = fdopen(fd, "re")))
3886 break;
3887
3888 if (errno == ELOOP) {
3889 log_error("Refusing to operate on symlinks, please pass unit names or absolute paths to unit files.");
3890 free(filename);
3891 return -errno;
3892 }
3893
3894 if (errno != ENOENT) {
3895 log_error("Failed to open %s: %m", filename);
3896 free(filename);
3897 return -errno;
3898 }
3899
3900 free(filename);
3901 filename = NULL;
3902 }
3903
3904 if (!f) {
3905 #if defined(TARGET_FEDORA) && defined (HAVE_SYSV_COMPAT)
3906
3907 if (endswith(i->name, ".service")) {
3908 char *sysv;
3909 bool exists;
3910
3911 if (asprintf(&sysv, SYSTEM_SYSVINIT_PATH "/%s", i->name) < 0) {
3912 log_error("Out of memory");
3913 return -ENOMEM;
3914 }
3915
3916 sysv[strlen(sysv) - sizeof(".service") + 1] = 0;
3917 exists = access(sysv, F_OK) >= 0;
3918
3919 if (exists) {
3920 pid_t pid;
3921 siginfo_t status;
3922
3923 const char *argv[] = {
3924 "/sbin/chkconfig",
3925 NULL,
3926 NULL,
3927 NULL
3928 };
3929
3930 log_info("%s is not a native service, redirecting to /sbin/chkconfig.", i->name);
3931
3932 argv[1] = file_name_from_path(sysv);
3933 argv[2] =
3934 streq(verb, "enable") ? "on" :
3935 streq(verb, "disable") ? "off" : NULL;
3936
3937 log_info("Executing %s %s %s", argv[0], argv[1], strempty(argv[2]));
3938
3939 if ((pid = fork()) < 0) {
3940 log_error("Failed to fork: %m");
3941 free(sysv);
3942 return -errno;
3943 } else if (pid == 0) {
3944 execv(argv[0], (char**) argv);
3945 _exit(EXIT_FAILURE);
3946 }
3947
3948 free(sysv);
3949
3950 if ((r = wait_for_terminate(pid, &status)) < 0)
3951 return r;
3952
3953 if (status.si_code == CLD_EXITED) {
3954 if (status.si_status == 0 && (streq(verb, "enable") || streq(verb, "disable")))
3955 n_symlinks ++;
3956
3957 return status.si_status == 0 ? 0 : -EINVAL;
3958 } else
3959 return -EPROTO;
3960 }
3961
3962 free(sysv);
3963 }
3964
3965 #endif
3966
3967 log_error("Couldn't find %s.", i->name);
3968 return -ENOENT;
3969 }
3970
3971 i->path = filename;
3972
3973 if ((r = config_parse(filename, f, NULL, items, true, i)) < 0) {
3974 fclose(f);
3975 return r;
3976 }
3977
3978 n_symlinks += strv_length(i->aliases);
3979 n_symlinks += strv_length(i->wanted_by);
3980
3981 fclose(f);
3982
3983 if ((r = install_info_symlink_alias(verb, i, config_path)) != 0)
3984 return r;
3985
3986 if ((r = install_info_symlink_wants(verb, i, config_path)) != 0)
3987 return r;
3988
3989 if ((r = mark_symlink_for_removal(filename)) < 0)
3990 return r;
3991
3992 if ((r = remove_marked_symlinks(config_path)) < 0)
3993 return r;
3994
3995 return 0;
3996 }
3997
3998 static char *get_config_path(void) {
3999
4000 if (arg_user && arg_global)
4001 return strdup(USER_CONFIG_UNIT_PATH);
4002
4003 if (arg_user) {
4004 char *p;
4005
4006 if (user_config_home(&p) < 0)
4007 return NULL;
4008
4009 return p;
4010 }
4011
4012 return strdup(SYSTEM_CONFIG_UNIT_PATH);
4013 }
4014
4015 static int enable_unit(DBusConnection *bus, char **args, unsigned n) {
4016 DBusError error;
4017 int r;
4018 LookupPaths paths;
4019 char *config_path = NULL;
4020 unsigned j;
4021 InstallInfo *i;
4022 const char *verb = args[0];
4023
4024 dbus_error_init(&error);
4025
4026 zero(paths);
4027 if ((r = lookup_paths_init(&paths, arg_user ? MANAGER_USER : MANAGER_SYSTEM)) < 0) {
4028 log_error("Failed to determine lookup paths: %s", strerror(-r));
4029 goto finish;
4030 }
4031
4032 if (!(config_path = get_config_path())) {
4033 log_error("Failed to determine config path");
4034 r = -ENOMEM;
4035 goto finish;
4036 }
4037
4038 will_install = hashmap_new(string_hash_func, string_compare_func);
4039 have_installed = hashmap_new(string_hash_func, string_compare_func);
4040
4041 if (!will_install || !have_installed) {
4042 log_error("Failed to allocate unit sets.");
4043 r = -ENOMEM;
4044 goto finish;
4045 }
4046
4047 if (!arg_defaults && streq(verb, "disable"))
4048 if (!(remove_symlinks_to = set_new(string_hash_func, string_compare_func))) {
4049 log_error("Failed to allocate symlink sets.");
4050 r = -ENOMEM;
4051 goto finish;
4052 }
4053
4054 for (j = 1; j < n; j++)
4055 if ((r = install_info_add(args[j])) < 0) {
4056 log_warning("Cannot install unit %s: %s", args[j], strerror(-r));
4057 goto finish;
4058 }
4059
4060 while ((i = hashmap_first(will_install))) {
4061 int q;
4062
4063 assert_se(hashmap_move_one(have_installed, will_install, i->name) == 0);
4064
4065 if ((q = install_info_apply(verb, &paths, i, config_path)) != 0) {
4066
4067 if (q < 0) {
4068 if (r == 0)
4069 r = q;
4070 goto finish;
4071 }
4072
4073 /* In test mode and found something */
4074 r = 1;
4075 break;
4076 }
4077 }
4078
4079 if (streq(verb, "is-enabled"))
4080 r = r > 0 ? 0 : -ENOENT;
4081 else {
4082 if (n_symlinks <= 0)
4083 log_warning("Unit files contain no applicable installation information. Ignoring.");
4084
4085 if (bus &&
4086 /* Don't try to reload anything if the user asked us to not do this */
4087 !arg_no_reload &&
4088 /* Don't try to reload anything when updating a unit globally */
4089 !arg_global &&
4090 /* Don't try to reload anything if we are called for system changes but the system wasn't booted with systemd */
4091 (arg_user || sd_booted() > 0) &&
4092 /* Don't try to reload anything if we are running in a chroot environment */
4093 (arg_user || running_in_chroot() <= 0) ) {
4094 int q;
4095
4096 if ((q = daemon_reload(bus, args, n)) < 0)
4097 r = q;
4098 }
4099 }
4100
4101 finish:
4102 install_info_hashmap_free(will_install);
4103 install_info_hashmap_free(have_installed);
4104
4105 set_free_free(remove_symlinks_to);
4106
4107 lookup_paths_free(&paths);
4108
4109 free(config_path);
4110
4111 return r;
4112 }
4113
4114 static int systemctl_help(void) {
4115
4116 printf("%s [OPTIONS...] {COMMAND} ...\n\n"
4117 "Send control commands to or query the systemd manager.\n\n"
4118 " -h --help Show this help\n"
4119 " --version Show package version\n"
4120 " -t --type=TYPE List only units of a particular type\n"
4121 " -p --property=NAME Show only properties by this name\n"
4122 " -a --all Show all units/properties, including dead/empty ones\n"
4123 " --full Don't ellipsize unit names on output\n"
4124 " --fail When queueing a new job, fail if conflicting jobs are\n"
4125 " pending\n"
4126 " -q --quiet Suppress output\n"
4127 " --no-block Do not wait until operation finished\n"
4128 " --no-pager Do not pipe output into a pager.\n"
4129 " --system Connect to system manager\n"
4130 " --user Connect to user service manager\n"
4131 " --order When generating graph for dot, show only order\n"
4132 " --require When generating graph for dot, show only requirement\n"
4133 " --no-wall Don't send wall message before halt/power-off/reboot\n"
4134 " --global Enable/disable unit files globally\n"
4135 " --no-reload When enabling/disabling unit files, don't reload daemon\n"
4136 " configuration\n"
4137 " --no-ask-password\n"
4138 " Do not ask for system passwords\n"
4139 " --kill-mode=MODE How to send signal\n"
4140 " --kill-who=WHO Who to send signal to\n"
4141 " -s --signal=SIGNAL Which signal to send\n"
4142 " -f --force When enabling unit files, override existing symlinks\n"
4143 " When shutting down, execute action immediately\n"
4144 " --defaults When disabling unit files, remove default symlinks only\n\n"
4145 "Commands:\n"
4146 " list-units List units\n"
4147 " start [NAME...] Start (activate) one or more units\n"
4148 " stop [NAME...] Stop (deactivate) one or more units\n"
4149 " reload [NAME...] Reload one or more units\n"
4150 " restart [NAME...] Start or restart one or more units\n"
4151 " try-restart [NAME...] Restart one or more units if active\n"
4152 " reload-or-restart [NAME...] Reload one or more units is possible,\n"
4153 " otherwise start or restart\n"
4154 " reload-or-try-restart [NAME...] Reload one or more units is possible,\n"
4155 " otherwise restart if active\n"
4156 " isolate [NAME] Start one unit and stop all others\n"
4157 " kill [NAME...] Send signal to processes of a unit\n"
4158 " is-active [NAME...] Check whether units are active\n"
4159 " status [NAME...|PID...] Show runtime status of one or more units\n"
4160 " show [NAME...|JOB...] Show properties of one or more\n"
4161 " units/jobs or the manager\n"
4162 " reset-failed [NAME...] Reset failed state for all, one, or more\n"
4163 " units\n"
4164 " enable [NAME...] Enable one or more unit files\n"
4165 " disable [NAME...] Disable one or more unit files\n"
4166 " is-enabled [NAME...] Check whether unit files are enabled\n"
4167 " load [NAME...] Load one or more units\n"
4168 " list-jobs List jobs\n"
4169 " cancel [JOB...] Cancel all, one, or more jobs\n"
4170 " monitor Monitor unit/job changes\n"
4171 " dump Dump server status\n"
4172 " dot Dump dependency graph for dot(1)\n"
4173 " snapshot [NAME] Create a snapshot\n"
4174 " delete [NAME...] Remove one or more snapshots\n"
4175 " daemon-reload Reload systemd manager configuration\n"
4176 " daemon-reexec Reexecute systemd manager\n"
4177 " show-environment Dump environment\n"
4178 " set-environment [NAME=VALUE...] Set one or more environment variables\n"
4179 " unset-environment [NAME...] Unset one or more environment variables\n"
4180 " default Enter system default mode\n"
4181 " rescue Enter system rescue mode\n"
4182 " emergency Enter system emergency mode\n"
4183 " halt Shut down and halt the system\n"
4184 " poweroff Shut down and power-off the system\n"
4185 " reboot Shut down and reboot the system\n"
4186 " kexec Shut down and reboot the system with kexec\n"
4187 " exit Ask for user instance termination\n",
4188 program_invocation_short_name);
4189
4190 return 0;
4191 }
4192
4193 static int halt_help(void) {
4194
4195 printf("%s [OPTIONS...]\n\n"
4196 "%s the system.\n\n"
4197 " --help Show this help\n"
4198 " --halt Halt the machine\n"
4199 " -p --poweroff Switch off the machine\n"
4200 " --reboot Reboot the machine\n"
4201 " -f --force Force immediate halt/power-off/reboot\n"
4202 " -w --wtmp-only Don't halt/power-off/reboot, just write wtmp record\n"
4203 " -d --no-wtmp Don't write wtmp record\n"
4204 " -n --no-sync Don't sync before halt/power-off/reboot\n"
4205 " --no-wall Don't send wall message before halt/power-off/reboot\n",
4206 program_invocation_short_name,
4207 arg_action == ACTION_REBOOT ? "Reboot" :
4208 arg_action == ACTION_POWEROFF ? "Power off" :
4209 "Halt");
4210
4211 return 0;
4212 }
4213
4214 static int shutdown_help(void) {
4215
4216 printf("%s [OPTIONS...] [TIME] [WALL...]\n\n"
4217 "Shut down the system.\n\n"
4218 " --help Show this help\n"
4219 " -H --halt Halt the machine\n"
4220 " -P --poweroff Power-off the machine\n"
4221 " -r --reboot Reboot the machine\n"
4222 " -h Equivalent to --poweroff, overriden by --halt\n"
4223 " -k Don't halt/power-off/reboot, just send warnings\n"
4224 " --no-wall Don't send wall message before halt/power-off/reboot\n"
4225 " -c Cancel a pending shutdown\n",
4226 program_invocation_short_name);
4227
4228 return 0;
4229 }
4230
4231 static int telinit_help(void) {
4232
4233 printf("%s [OPTIONS...] {COMMAND}\n\n"
4234 "Send control commands to the init daemon.\n\n"
4235 " --help Show this help\n"
4236 " --no-wall Don't send wall message before halt/power-off/reboot\n\n"
4237 "Commands:\n"
4238 " 0 Power-off the machine\n"
4239 " 6 Reboot the machine\n"
4240 " 2, 3, 4, 5 Start runlevelX.target unit\n"
4241 " 1, s, S Enter rescue mode\n"
4242 " q, Q Reload init daemon configuration\n"
4243 " u, U Reexecute init daemon\n",
4244 program_invocation_short_name);
4245
4246 return 0;
4247 }
4248
4249 static int runlevel_help(void) {
4250
4251 printf("%s [OPTIONS...]\n\n"
4252 "Prints the previous and current runlevel of the init system.\n\n"
4253 " --help Show this help\n",
4254 program_invocation_short_name);
4255
4256 return 0;
4257 }
4258
4259 static int systemctl_parse_argv(int argc, char *argv[]) {
4260
4261 enum {
4262 ARG_FAIL = 0x100,
4263 ARG_VERSION,
4264 ARG_USER,
4265 ARG_SYSTEM,
4266 ARG_GLOBAL,
4267 ARG_NO_BLOCK,
4268 ARG_NO_PAGER,
4269 ARG_NO_WALL,
4270 ARG_ORDER,
4271 ARG_REQUIRE,
4272 ARG_FULL,
4273 ARG_NO_RELOAD,
4274 ARG_DEFAULTS,
4275 ARG_KILL_MODE,
4276 ARG_KILL_WHO,
4277 ARG_NO_ASK_PASSWORD
4278 };
4279
4280 static const struct option options[] = {
4281 { "help", no_argument, NULL, 'h' },
4282 { "version", no_argument, NULL, ARG_VERSION },
4283 { "type", required_argument, NULL, 't' },
4284 { "property", required_argument, NULL, 'p' },
4285 { "all", no_argument, NULL, 'a' },
4286 { "full", no_argument, NULL, ARG_FULL },
4287 { "fail", no_argument, NULL, ARG_FAIL },
4288 { "user", no_argument, NULL, ARG_USER },
4289 { "system", no_argument, NULL, ARG_SYSTEM },
4290 { "global", no_argument, NULL, ARG_GLOBAL },
4291 { "no-block", no_argument, NULL, ARG_NO_BLOCK },
4292 { "no-pager", no_argument, NULL, ARG_NO_PAGER },
4293 { "no-wall", no_argument, NULL, ARG_NO_WALL },
4294 { "quiet", no_argument, NULL, 'q' },
4295 { "order", no_argument, NULL, ARG_ORDER },
4296 { "require", no_argument, NULL, ARG_REQUIRE },
4297 { "force", no_argument, NULL, 'f' },
4298 { "no-reload", no_argument, NULL, ARG_NO_RELOAD },
4299 { "defaults", no_argument, NULL, ARG_DEFAULTS },
4300 { "kill-mode", required_argument, NULL, ARG_KILL_MODE },
4301 { "kill-who", required_argument, NULL, ARG_KILL_WHO },
4302 { "signal", required_argument, NULL, 's' },
4303 { "no-ask-password", no_argument, NULL, ARG_NO_ASK_PASSWORD },
4304 { NULL, 0, NULL, 0 }
4305 };
4306
4307 int c;
4308
4309 assert(argc >= 0);
4310 assert(argv);
4311
4312 /* Only when running as systemctl we ask for passwords */
4313 arg_ask_password = true;
4314
4315 while ((c = getopt_long(argc, argv, "ht:p:aqfs:", options, NULL)) >= 0) {
4316
4317 switch (c) {
4318
4319 case 'h':
4320 systemctl_help();
4321 return 0;
4322
4323 case ARG_VERSION:
4324 puts(PACKAGE_STRING);
4325 puts(DISTRIBUTION);
4326 puts(SYSTEMD_FEATURES);
4327 return 0;
4328
4329 case 't':
4330 arg_type = optarg;
4331 break;
4332
4333 case 'p': {
4334 char **l;
4335
4336 if (!(l = strv_append(arg_property, optarg)))
4337 return -ENOMEM;
4338
4339 strv_free(arg_property);
4340 arg_property = l;
4341
4342 /* If the user asked for a particular
4343 * property, show it to him, even if it is
4344 * empty. */
4345 arg_all = true;
4346 break;
4347 }
4348
4349 case 'a':
4350 arg_all = true;
4351 break;
4352
4353 case ARG_FAIL:
4354 arg_fail = true;
4355 break;
4356
4357 case ARG_USER:
4358 arg_user = true;
4359 break;
4360
4361 case ARG_SYSTEM:
4362 arg_user = false;
4363 break;
4364
4365 case ARG_NO_BLOCK:
4366 arg_no_block = true;
4367 break;
4368
4369 case ARG_NO_PAGER:
4370 arg_no_pager = true;
4371 break;
4372
4373 case ARG_NO_WALL:
4374 arg_no_wall = true;
4375 break;
4376
4377 case ARG_ORDER:
4378 arg_dot = DOT_ORDER;
4379 break;
4380
4381 case ARG_REQUIRE:
4382 arg_dot = DOT_REQUIRE;
4383 break;
4384
4385 case ARG_FULL:
4386 arg_full = true;
4387 break;
4388
4389 case 'q':
4390 arg_quiet = true;
4391 break;
4392
4393 case 'f':
4394 arg_force = true;
4395 break;
4396
4397 case ARG_NO_RELOAD:
4398 arg_no_reload = true;
4399 break;
4400
4401 case ARG_GLOBAL:
4402 arg_global = true;
4403 arg_user = true;
4404 break;
4405
4406 case ARG_DEFAULTS:
4407 arg_defaults = true;
4408 break;
4409
4410 case ARG_KILL_WHO:
4411 arg_kill_who = optarg;
4412 break;
4413
4414 case ARG_KILL_MODE:
4415 arg_kill_mode = optarg;
4416 break;
4417
4418 case 's':
4419 if ((arg_signal = signal_from_string_try_harder(optarg)) < 0) {
4420 log_error("Failed to parse signal string %s.", optarg);
4421 return -EINVAL;
4422 }
4423 break;
4424
4425 case ARG_NO_ASK_PASSWORD:
4426 arg_ask_password = false;
4427 break;
4428
4429 case '?':
4430 return -EINVAL;
4431
4432 default:
4433 log_error("Unknown option code %c", c);
4434 return -EINVAL;
4435 }
4436 }
4437
4438 return 1;
4439 }
4440
4441 static int halt_parse_argv(int argc, char *argv[]) {
4442
4443 enum {
4444 ARG_HELP = 0x100,
4445 ARG_HALT,
4446 ARG_REBOOT,
4447 ARG_NO_WALL
4448 };
4449
4450 static const struct option options[] = {
4451 { "help", no_argument, NULL, ARG_HELP },
4452 { "halt", no_argument, NULL, ARG_HALT },
4453 { "poweroff", no_argument, NULL, 'p' },
4454 { "reboot", no_argument, NULL, ARG_REBOOT },
4455 { "force", no_argument, NULL, 'f' },
4456 { "wtmp-only", no_argument, NULL, 'w' },
4457 { "no-wtmp", no_argument, NULL, 'd' },
4458 { "no-sync", no_argument, NULL, 'n' },
4459 { "no-wall", no_argument, NULL, ARG_NO_WALL },
4460 { NULL, 0, NULL, 0 }
4461 };
4462
4463 int c, runlevel;
4464
4465 assert(argc >= 0);
4466 assert(argv);
4467
4468 if (utmp_get_runlevel(&runlevel, NULL) >= 0)
4469 if (runlevel == '0' || runlevel == '6')
4470 arg_immediate = true;
4471
4472 while ((c = getopt_long(argc, argv, "pfwdnih", options, NULL)) >= 0) {
4473 switch (c) {
4474
4475 case ARG_HELP:
4476 halt_help();
4477 return 0;
4478
4479 case ARG_HALT:
4480 arg_action = ACTION_HALT;
4481 break;
4482
4483 case 'p':
4484 if (arg_action != ACTION_REBOOT)
4485 arg_action = ACTION_POWEROFF;
4486 break;
4487
4488 case ARG_REBOOT:
4489 arg_action = ACTION_REBOOT;
4490 break;
4491
4492 case 'f':
4493 arg_immediate = true;
4494 break;
4495
4496 case 'w':
4497 arg_dry = true;
4498 break;
4499
4500 case 'd':
4501 arg_no_wtmp = true;
4502 break;
4503
4504 case 'n':
4505 arg_no_sync = true;
4506 break;
4507
4508 case ARG_NO_WALL:
4509 arg_no_wall = true;
4510 break;
4511
4512 case 'i':
4513 case 'h':
4514 /* Compatibility nops */
4515 break;
4516
4517 case '?':
4518 return -EINVAL;
4519
4520 default:
4521 log_error("Unknown option code %c", c);
4522 return -EINVAL;
4523 }
4524 }
4525
4526 if (optind < argc) {
4527 log_error("Too many arguments.");
4528 return -EINVAL;
4529 }
4530
4531 return 1;
4532 }
4533
4534 static int parse_time_spec(const char *t, usec_t *_u) {
4535 assert(t);
4536 assert(_u);
4537
4538 if (streq(t, "now"))
4539 *_u = 0;
4540 else if (t[0] == '+') {
4541 uint64_t u;
4542
4543 if (safe_atou64(t + 1, &u) < 0)
4544 return -EINVAL;
4545
4546 *_u = now(CLOCK_REALTIME) + USEC_PER_MINUTE * u;
4547 } else {
4548 char *e = NULL;
4549 long hour, minute;
4550 struct tm tm;
4551 time_t s;
4552 usec_t n;
4553
4554 errno = 0;
4555 hour = strtol(t, &e, 10);
4556 if (errno != 0 || *e != ':' || hour < 0 || hour > 23)
4557 return -EINVAL;
4558
4559 minute = strtol(e+1, &e, 10);
4560 if (errno != 0 || *e != 0 || minute < 0 || minute > 59)
4561 return -EINVAL;
4562
4563 n = now(CLOCK_REALTIME);
4564 s = (time_t) (n / USEC_PER_SEC);
4565
4566 zero(tm);
4567 assert_se(localtime_r(&s, &tm));
4568
4569 tm.tm_hour = (int) hour;
4570 tm.tm_min = (int) minute;
4571 tm.tm_sec = 0;
4572
4573 assert_se(s = mktime(&tm));
4574
4575 *_u = (usec_t) s * USEC_PER_SEC;
4576
4577 while (*_u <= n)
4578 *_u += USEC_PER_DAY;
4579 }
4580
4581 return 0;
4582 }
4583
4584 static int shutdown_parse_argv(int argc, char *argv[]) {
4585
4586 enum {
4587 ARG_HELP = 0x100,
4588 ARG_NO_WALL
4589 };
4590
4591 static const struct option options[] = {
4592 { "help", no_argument, NULL, ARG_HELP },
4593 { "halt", no_argument, NULL, 'H' },
4594 { "poweroff", no_argument, NULL, 'P' },
4595 { "reboot", no_argument, NULL, 'r' },
4596 { "no-wall", no_argument, NULL, ARG_NO_WALL },
4597 { NULL, 0, NULL, 0 }
4598 };
4599
4600 int c, r;
4601
4602 assert(argc >= 0);
4603 assert(argv);
4604
4605 while ((c = getopt_long(argc, argv, "HPrhkt:afFc", options, NULL)) >= 0) {
4606 switch (c) {
4607
4608 case ARG_HELP:
4609 shutdown_help();
4610 return 0;
4611
4612 case 'H':
4613 arg_action = ACTION_HALT;
4614 break;
4615
4616 case 'P':
4617 arg_action = ACTION_POWEROFF;
4618 break;
4619
4620 case 'r':
4621 arg_action = ACTION_REBOOT;
4622 break;
4623
4624 case 'h':
4625 if (arg_action != ACTION_HALT)
4626 arg_action = ACTION_POWEROFF;
4627 break;
4628
4629 case 'k':
4630 arg_dry = true;
4631 break;
4632
4633 case ARG_NO_WALL:
4634 arg_no_wall = true;
4635 break;
4636
4637 case 't':
4638 case 'a':
4639 /* Compatibility nops */
4640 break;
4641
4642 case 'c':
4643 arg_action = ACTION_CANCEL_SHUTDOWN;
4644 break;
4645
4646 case '?':
4647 return -EINVAL;
4648
4649 default:
4650 log_error("Unknown option code %c", c);
4651 return -EINVAL;
4652 }
4653 }
4654
4655 if (argc > optind) {
4656 if ((r = parse_time_spec(argv[optind], &arg_when)) < 0) {
4657 log_error("Failed to parse time specification: %s", argv[optind]);
4658 return r;
4659 }
4660 } else
4661 arg_when = now(CLOCK_REALTIME) + USEC_PER_MINUTE;
4662
4663 /* We skip the time argument */
4664 if (argc > optind + 1)
4665 arg_wall = argv + optind + 1;
4666
4667 optind = argc;
4668
4669 return 1;
4670 }
4671
4672 static int telinit_parse_argv(int argc, char *argv[]) {
4673
4674 enum {
4675 ARG_HELP = 0x100,
4676 ARG_NO_WALL
4677 };
4678
4679 static const struct option options[] = {
4680 { "help", no_argument, NULL, ARG_HELP },
4681 { "no-wall", no_argument, NULL, ARG_NO_WALL },
4682 { NULL, 0, NULL, 0 }
4683 };
4684
4685 static const struct {
4686 char from;
4687 enum action to;
4688 } table[] = {
4689 { '0', ACTION_POWEROFF },
4690 { '6', ACTION_REBOOT },
4691 { '1', ACTION_RESCUE },
4692 { '2', ACTION_RUNLEVEL2 },
4693 { '3', ACTION_RUNLEVEL3 },
4694 { '4', ACTION_RUNLEVEL4 },
4695 { '5', ACTION_RUNLEVEL5 },
4696 { 's', ACTION_RESCUE },
4697 { 'S', ACTION_RESCUE },
4698 { 'q', ACTION_RELOAD },
4699 { 'Q', ACTION_RELOAD },
4700 { 'u', ACTION_REEXEC },
4701 { 'U', ACTION_REEXEC }
4702 };
4703
4704 unsigned i;
4705 int c;
4706
4707 assert(argc >= 0);
4708 assert(argv);
4709
4710 while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) {
4711 switch (c) {
4712
4713 case ARG_HELP:
4714 telinit_help();
4715 return 0;
4716
4717 case ARG_NO_WALL:
4718 arg_no_wall = true;
4719 break;
4720
4721 case '?':
4722 return -EINVAL;
4723
4724 default:
4725 log_error("Unknown option code %c", c);
4726 return -EINVAL;
4727 }
4728 }
4729
4730 if (optind >= argc) {
4731 telinit_help();
4732 return -EINVAL;
4733 }
4734
4735 if (optind + 1 < argc) {
4736 log_error("Too many arguments.");
4737 return -EINVAL;
4738 }
4739
4740 if (strlen(argv[optind]) != 1) {
4741 log_error("Expected single character argument.");
4742 return -EINVAL;
4743 }
4744
4745 for (i = 0; i < ELEMENTSOF(table); i++)
4746 if (table[i].from == argv[optind][0])
4747 break;
4748
4749 if (i >= ELEMENTSOF(table)) {
4750 log_error("Unknown command %s.", argv[optind]);
4751 return -EINVAL;
4752 }
4753
4754 arg_action = table[i].to;
4755
4756 optind ++;
4757
4758 return 1;
4759 }
4760
4761 static int runlevel_parse_argv(int argc, char *argv[]) {
4762
4763 enum {
4764 ARG_HELP = 0x100,
4765 };
4766
4767 static const struct option options[] = {
4768 { "help", no_argument, NULL, ARG_HELP },
4769 { NULL, 0, NULL, 0 }
4770 };
4771
4772 int c;
4773
4774 assert(argc >= 0);
4775 assert(argv);
4776
4777 while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) {
4778 switch (c) {
4779
4780 case ARG_HELP:
4781 runlevel_help();
4782 return 0;
4783
4784 case '?':
4785 return -EINVAL;
4786
4787 default:
4788 log_error("Unknown option code %c", c);
4789 return -EINVAL;
4790 }
4791 }
4792
4793 if (optind < argc) {
4794 log_error("Too many arguments.");
4795 return -EINVAL;
4796 }
4797
4798 return 1;
4799 }
4800
4801 static int parse_argv(int argc, char *argv[]) {
4802 assert(argc >= 0);
4803 assert(argv);
4804
4805 if (program_invocation_short_name) {
4806
4807 if (strstr(program_invocation_short_name, "halt")) {
4808 arg_action = ACTION_HALT;
4809 return halt_parse_argv(argc, argv);
4810 } else if (strstr(program_invocation_short_name, "poweroff")) {
4811 arg_action = ACTION_POWEROFF;
4812 return halt_parse_argv(argc, argv);
4813 } else if (strstr(program_invocation_short_name, "reboot")) {
4814 arg_action = ACTION_REBOOT;
4815 return halt_parse_argv(argc, argv);
4816 } else if (strstr(program_invocation_short_name, "shutdown")) {
4817 arg_action = ACTION_POWEROFF;
4818 return shutdown_parse_argv(argc, argv);
4819 } else if (strstr(program_invocation_short_name, "init")) {
4820
4821 if (sd_booted() > 0) {
4822 arg_action = ACTION_INVALID;
4823 return telinit_parse_argv(argc, argv);
4824 } else {
4825 /* Hmm, so some other init system is
4826 * running, we need to forward this
4827 * request to it. For now we simply
4828 * guess that it is Upstart. */
4829
4830 execv("/lib/upstart/telinit", argv);
4831
4832 log_error("Couldn't find an alternative telinit implementation to spawn.");
4833 return -EIO;
4834 }
4835
4836 } else if (strstr(program_invocation_short_name, "runlevel")) {
4837 arg_action = ACTION_RUNLEVEL;
4838 return runlevel_parse_argv(argc, argv);
4839 }
4840 }
4841
4842 arg_action = ACTION_SYSTEMCTL;
4843 return systemctl_parse_argv(argc, argv);
4844 }
4845
4846 static int action_to_runlevel(void) {
4847
4848 static const char table[_ACTION_MAX] = {
4849 [ACTION_HALT] = '0',
4850 [ACTION_POWEROFF] = '0',
4851 [ACTION_REBOOT] = '6',
4852 [ACTION_RUNLEVEL2] = '2',
4853 [ACTION_RUNLEVEL3] = '3',
4854 [ACTION_RUNLEVEL4] = '4',
4855 [ACTION_RUNLEVEL5] = '5',
4856 [ACTION_RESCUE] = '1'
4857 };
4858
4859 assert(arg_action < _ACTION_MAX);
4860
4861 return table[arg_action];
4862 }
4863
4864 static int talk_upstart(void) {
4865 DBusMessage *m = NULL, *reply = NULL;
4866 DBusError error;
4867 int previous, rl, r;
4868 char
4869 env1_buf[] = "RUNLEVEL=X",
4870 env2_buf[] = "PREVLEVEL=X";
4871 char *env1 = env1_buf, *env2 = env2_buf;
4872 const char *emit = "runlevel";
4873 dbus_bool_t b_false = FALSE;
4874 DBusMessageIter iter, sub;
4875 DBusConnection *bus;
4876
4877 dbus_error_init(&error);
4878
4879 if (!(rl = action_to_runlevel()))
4880 return 0;
4881
4882 if (utmp_get_runlevel(&previous, NULL) < 0)
4883 previous = 'N';
4884
4885 if (!(bus = dbus_connection_open_private("unix:abstract=/com/ubuntu/upstart", &error))) {
4886 if (dbus_error_has_name(&error, DBUS_ERROR_NO_SERVER)) {
4887 r = 0;
4888 goto finish;
4889 }
4890
4891 log_error("Failed to connect to Upstart bus: %s", bus_error_message(&error));
4892 r = -EIO;
4893 goto finish;
4894 }
4895
4896 if ((r = bus_check_peercred(bus)) < 0) {
4897 log_error("Failed to verify owner of bus.");
4898 goto finish;
4899 }
4900
4901 if (!(m = dbus_message_new_method_call(
4902 "com.ubuntu.Upstart",
4903 "/com/ubuntu/Upstart",
4904 "com.ubuntu.Upstart0_6",
4905 "EmitEvent"))) {
4906
4907 log_error("Could not allocate message.");
4908 r = -ENOMEM;
4909 goto finish;
4910 }
4911
4912 dbus_message_iter_init_append(m, &iter);
4913
4914 env1_buf[sizeof(env1_buf)-2] = rl;
4915 env2_buf[sizeof(env2_buf)-2] = previous;
4916
4917 if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &emit) ||
4918 !dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "s", &sub) ||
4919 !dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &env1) ||
4920 !dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &env2) ||
4921 !dbus_message_iter_close_container(&iter, &sub) ||
4922 !dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &b_false)) {
4923 log_error("Could not append arguments to message.");
4924 r = -ENOMEM;
4925 goto finish;
4926 }
4927
4928 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
4929
4930 if (error_is_no_service(&error)) {
4931 r = -EADDRNOTAVAIL;
4932 goto finish;
4933 }
4934
4935 log_error("Failed to issue method call: %s", bus_error_message(&error));
4936 r = -EIO;
4937 goto finish;
4938 }
4939
4940 r = 0;
4941
4942 finish:
4943 if (m)
4944 dbus_message_unref(m);
4945
4946 if (reply)
4947 dbus_message_unref(reply);
4948
4949 if (bus) {
4950 dbus_connection_flush(bus);
4951 dbus_connection_close(bus);
4952 dbus_connection_unref(bus);
4953 }
4954
4955 dbus_error_free(&error);
4956
4957 return r;
4958 }
4959
4960 static int talk_initctl(void) {
4961 struct init_request request;
4962 int r, fd;
4963 char rl;
4964
4965 if (!(rl = action_to_runlevel()))
4966 return 0;
4967
4968 zero(request);
4969 request.magic = INIT_MAGIC;
4970 request.sleeptime = 0;
4971 request.cmd = INIT_CMD_RUNLVL;
4972 request.runlevel = rl;
4973
4974 if ((fd = open(INIT_FIFO, O_WRONLY|O_NDELAY|O_CLOEXEC|O_NOCTTY)) < 0) {
4975
4976 if (errno == ENOENT)
4977 return 0;
4978
4979 log_error("Failed to open "INIT_FIFO": %m");
4980 return -errno;
4981 }
4982
4983 errno = 0;
4984 r = loop_write(fd, &request, sizeof(request), false) != sizeof(request);
4985 close_nointr_nofail(fd);
4986
4987 if (r < 0) {
4988 log_error("Failed to write to "INIT_FIFO": %m");
4989 return errno ? -errno : -EIO;
4990 }
4991
4992 return 1;
4993 }
4994
4995 static int systemctl_main(DBusConnection *bus, int argc, char *argv[], DBusError *error) {
4996
4997 static const struct {
4998 const char* verb;
4999 const enum {
5000 MORE,
5001 LESS,
5002 EQUAL
5003 } argc_cmp;
5004 const int argc;
5005 int (* const dispatch)(DBusConnection *bus, char **args, unsigned n);
5006 } verbs[] = {
5007 { "list-units", LESS, 1, list_units },
5008 { "list-jobs", EQUAL, 1, list_jobs },
5009 { "clear-jobs", EQUAL, 1, daemon_reload },
5010 { "load", MORE, 2, load_unit },
5011 { "cancel", MORE, 2, cancel_job },
5012 { "start", MORE, 2, start_unit },
5013 { "stop", MORE, 2, start_unit },
5014 { "reload", MORE, 2, start_unit },
5015 { "restart", MORE, 2, start_unit },
5016 { "try-restart", MORE, 2, start_unit },
5017 { "reload-or-restart", MORE, 2, start_unit },
5018 { "reload-or-try-restart", MORE, 2, start_unit },
5019 { "force-reload", MORE, 2, start_unit }, /* For compatibility with SysV */
5020 { "condrestart", MORE, 2, start_unit }, /* For compatibility with RH */
5021 { "isolate", EQUAL, 2, start_unit },
5022 { "kill", MORE, 2, kill_unit },
5023 { "is-active", MORE, 2, check_unit },
5024 { "check", MORE, 2, check_unit },
5025 { "show", MORE, 1, show },
5026 { "status", MORE, 2, show },
5027 { "monitor", EQUAL, 1, monitor },
5028 { "dump", EQUAL, 1, dump },
5029 { "dot", EQUAL, 1, dot },
5030 { "snapshot", LESS, 2, snapshot },
5031 { "delete", MORE, 2, delete_snapshot },
5032 { "daemon-reload", EQUAL, 1, daemon_reload },
5033 { "daemon-reexec", EQUAL, 1, daemon_reload },
5034 { "show-environment", EQUAL, 1, show_enviroment },
5035 { "set-environment", MORE, 2, set_environment },
5036 { "unset-environment", MORE, 2, set_environment },
5037 { "halt", EQUAL, 1, start_special },
5038 { "poweroff", EQUAL, 1, start_special },
5039 { "reboot", EQUAL, 1, start_special },
5040 { "kexec", EQUAL, 1, start_special },
5041 { "default", EQUAL, 1, start_special },
5042 { "rescue", EQUAL, 1, start_special },
5043 { "emergency", EQUAL, 1, start_special },
5044 { "exit", EQUAL, 1, start_special },
5045 { "reset-failed", MORE, 1, reset_failed },
5046 { "enable", MORE, 2, enable_unit },
5047 { "disable", MORE, 2, enable_unit },
5048 { "is-enabled", MORE, 2, enable_unit }
5049 };
5050
5051 int left;
5052 unsigned i;
5053
5054 assert(argc >= 0);
5055 assert(argv);
5056 assert(error);
5057
5058 left = argc - optind;
5059
5060 if (left <= 0)
5061 /* Special rule: no arguments means "list-units" */
5062 i = 0;
5063 else {
5064 if (streq(argv[optind], "help")) {
5065 systemctl_help();
5066 return 0;
5067 }
5068
5069 for (i = 0; i < ELEMENTSOF(verbs); i++)
5070 if (streq(argv[optind], verbs[i].verb))
5071 break;
5072
5073 if (i >= ELEMENTSOF(verbs)) {
5074 log_error("Unknown operation %s", argv[optind]);
5075 return -EINVAL;
5076 }
5077 }
5078
5079 switch (verbs[i].argc_cmp) {
5080
5081 case EQUAL:
5082 if (left != verbs[i].argc) {
5083 log_error("Invalid number of arguments.");
5084 return -EINVAL;
5085 }
5086
5087 break;
5088
5089 case MORE:
5090 if (left < verbs[i].argc) {
5091 log_error("Too few arguments.");
5092 return -EINVAL;
5093 }
5094
5095 break;
5096
5097 case LESS:
5098 if (left > verbs[i].argc) {
5099 log_error("Too many arguments.");
5100 return -EINVAL;
5101 }
5102
5103 break;
5104
5105 default:
5106 assert_not_reached("Unknown comparison operator.");
5107 }
5108
5109 /* Require a bus connection for all operations but
5110 * enable/disable */
5111 if (!streq(verbs[i].verb, "enable") &&
5112 !streq(verbs[i].verb, "disable") &&
5113 !bus) {
5114 log_error("Failed to get D-Bus connection: %s", error->message);
5115 return -EIO;
5116 }
5117
5118 return verbs[i].dispatch(bus, argv + optind, left);
5119 }
5120
5121 static int send_shutdownd(usec_t t, char mode, bool warn, const char *message) {
5122 int fd = -1;
5123 struct msghdr msghdr;
5124 struct iovec iovec;
5125 union sockaddr_union sockaddr;
5126 struct shutdownd_command c;
5127
5128 zero(c);
5129 c.elapse = t;
5130 c.mode = mode;
5131 c.warn_wall = warn;
5132
5133 if (message)
5134 strncpy(c.wall_message, message, sizeof(c.wall_message));
5135
5136 if ((fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0)) < 0)
5137 return -errno;
5138
5139 zero(sockaddr);
5140 sockaddr.sa.sa_family = AF_UNIX;
5141 sockaddr.un.sun_path[0] = 0;
5142 strncpy(sockaddr.un.sun_path+1, "/org/freedesktop/systemd1/shutdownd", sizeof(sockaddr.un.sun_path)-1);
5143
5144 zero(iovec);
5145 iovec.iov_base = (char*) &c;
5146 iovec.iov_len = sizeof(c);
5147
5148 zero(msghdr);
5149 msghdr.msg_name = &sockaddr;
5150 msghdr.msg_namelen = offsetof(struct sockaddr_un, sun_path) + 1 + sizeof("/org/freedesktop/systemd1/shutdownd") - 1;
5151
5152 msghdr.msg_iov = &iovec;
5153 msghdr.msg_iovlen = 1;
5154
5155 if (sendmsg(fd, &msghdr, MSG_NOSIGNAL) < 0) {
5156 close_nointr_nofail(fd);
5157 return -errno;
5158 }
5159
5160 close_nointr_nofail(fd);
5161 return 0;
5162 }
5163
5164 static int reload_with_fallback(DBusConnection *bus) {
5165
5166 if (bus) {
5167 /* First, try systemd via D-Bus. */
5168 if (daemon_reload(bus, NULL, 0) > 0)
5169 return 0;
5170 }
5171
5172 /* Nothing else worked, so let's try signals */
5173 assert(arg_action == ACTION_RELOAD || arg_action == ACTION_REEXEC);
5174
5175 if (kill(1, arg_action == ACTION_RELOAD ? SIGHUP : SIGTERM) < 0) {
5176 log_error("kill() failed: %m");
5177 return -errno;
5178 }
5179
5180 return 0;
5181 }
5182
5183 static int start_with_fallback(DBusConnection *bus) {
5184
5185 if (bus) {
5186 /* First, try systemd via D-Bus. */
5187 if (start_unit(bus, NULL, 0) >= 0)
5188 goto done;
5189 }
5190
5191 /* Hmm, talking to systemd via D-Bus didn't work. Then
5192 * let's try to talk to Upstart via D-Bus. */
5193 if (talk_upstart() > 0)
5194 goto done;
5195
5196 /* Nothing else worked, so let's try
5197 * /dev/initctl */
5198 if (talk_initctl() > 0)
5199 goto done;
5200
5201 log_error("Failed to talk to init daemon.");
5202 return -EIO;
5203
5204 done:
5205 warn_wall(arg_action);
5206 return 0;
5207 }
5208
5209 static int halt_main(DBusConnection *bus) {
5210 int r;
5211
5212 if (geteuid() != 0) {
5213 log_error("Must be root.");
5214 return -EPERM;
5215 }
5216
5217 if (arg_when > 0) {
5218 char *m;
5219 char date[FORMAT_TIMESTAMP_MAX];
5220
5221 m = strv_join(arg_wall, " ");
5222 r = send_shutdownd(arg_when,
5223 arg_action == ACTION_HALT ? 'H' :
5224 arg_action == ACTION_POWEROFF ? 'P' :
5225 'r',
5226 !arg_no_wall,
5227 m);
5228 free(m);
5229
5230 if (r < 0)
5231 log_warning("Failed to talk to shutdownd, proceeding with immediate shutdown: %s", strerror(-r));
5232 else {
5233 log_info("Shutdown scheduled for %s, use 'shutdown -c' to cancel.",
5234 format_timestamp(date, sizeof(date), arg_when));
5235 return 0;
5236 }
5237 }
5238
5239 if (!arg_dry && !arg_immediate)
5240 return start_with_fallback(bus);
5241
5242 if (!arg_no_wtmp) {
5243 if (sd_booted() > 0)
5244 log_debug("Not writing utmp record, assuming that systemd-update-utmp is used.");
5245 else if ((r = utmp_put_shutdown(0)) < 0)
5246 log_warning("Failed to write utmp record: %s", strerror(-r));
5247 }
5248
5249 if (!arg_no_sync)
5250 sync();
5251
5252 if (arg_dry)
5253 return 0;
5254
5255 /* Make sure C-A-D is handled by the kernel from this
5256 * point on... */
5257 reboot(RB_ENABLE_CAD);
5258
5259 switch (arg_action) {
5260
5261 case ACTION_HALT:
5262 log_info("Halting.");
5263 reboot(RB_HALT_SYSTEM);
5264 break;
5265
5266 case ACTION_POWEROFF:
5267 log_info("Powering off.");
5268 reboot(RB_POWER_OFF);
5269 break;
5270
5271 case ACTION_REBOOT:
5272 log_info("Rebooting.");
5273 reboot(RB_AUTOBOOT);
5274 break;
5275
5276 default:
5277 assert_not_reached("Unknown halt action.");
5278 }
5279
5280 /* We should never reach this. */
5281 return -ENOSYS;
5282 }
5283
5284 static int runlevel_main(void) {
5285 int r, runlevel, previous;
5286
5287 if ((r = utmp_get_runlevel(&runlevel, &previous)) < 0) {
5288 printf("unknown\n");
5289 return r;
5290 }
5291
5292 printf("%c %c\n",
5293 previous <= 0 ? 'N' : previous,
5294 runlevel <= 0 ? 'N' : runlevel);
5295
5296 return 0;
5297 }
5298
5299 static void pager_open(void) {
5300 int fd[2];
5301 const char *pager;
5302
5303 if (pager_pid > 0)
5304 return;
5305
5306 if (!on_tty() || arg_no_pager)
5307 return;
5308
5309 if ((pager = getenv("PAGER")))
5310 if (!*pager || streq(pager, "cat"))
5311 return;
5312
5313 if (pipe(fd) < 0) {
5314 log_error("Failed to create pager pipe: %m");
5315 return;
5316 }
5317
5318 pager_pid = fork();
5319 if (pager_pid < 0) {
5320 log_error("Failed to fork pager: %m");
5321 close_pipe(fd);
5322 return;
5323 }
5324
5325 /* In the child start the pager */
5326 if (pager_pid == 0) {
5327
5328 dup2(fd[0], STDIN_FILENO);
5329 close_pipe(fd);
5330
5331 setenv("LESS", "FRSX", 0);
5332
5333 prctl(PR_SET_PDEATHSIG, SIGTERM);
5334
5335 if (pager) {
5336 execlp(pager, pager, NULL);
5337 execl("/bin/sh", "sh", "-c", pager, NULL);
5338 } else {
5339 execlp("sensible-pager", "sensible-pager", NULL);
5340 execlp("less", "less", NULL);
5341 execlp("more", "more", NULL);
5342 }
5343
5344 log_error("Unable to execute pager: %m");
5345 _exit(EXIT_FAILURE);
5346 }
5347
5348 /* Return in the parent */
5349 if (dup2(fd[1], STDOUT_FILENO) < 0)
5350 log_error("Failed to duplicate pager pipe: %m");
5351
5352 close_pipe(fd);
5353 }
5354
5355 static void pager_close(void) {
5356 siginfo_t dummy;
5357
5358 if (pager_pid <= 0)
5359 return;
5360
5361 /* Inform pager that we are done */
5362 fclose(stdout);
5363 wait_for_terminate(pager_pid, &dummy);
5364 pager_pid = 0;
5365 }
5366
5367 int main(int argc, char*argv[]) {
5368 int r, retval = EXIT_FAILURE;
5369 DBusConnection *bus = NULL;
5370 DBusError error;
5371
5372 dbus_error_init(&error);
5373
5374 log_parse_environment();
5375 log_open();
5376
5377 if ((r = parse_argv(argc, argv)) < 0)
5378 goto finish;
5379 else if (r == 0) {
5380 retval = EXIT_SUCCESS;
5381 goto finish;
5382 }
5383
5384 /* /sbin/runlevel doesn't need to communicate via D-Bus, so
5385 * let's shortcut this */
5386 if (arg_action == ACTION_RUNLEVEL) {
5387 r = runlevel_main();
5388 retval = r < 0 ? EXIT_FAILURE : r;
5389 goto finish;
5390 }
5391
5392 bus_connect(arg_user ? DBUS_BUS_SESSION : DBUS_BUS_SYSTEM, &bus, &private_bus, &error);
5393
5394 switch (arg_action) {
5395
5396 case ACTION_SYSTEMCTL:
5397 r = systemctl_main(bus, argc, argv, &error);
5398 break;
5399
5400 case ACTION_HALT:
5401 case ACTION_POWEROFF:
5402 case ACTION_REBOOT:
5403 r = halt_main(bus);
5404 break;
5405
5406 case ACTION_RUNLEVEL2:
5407 case ACTION_RUNLEVEL3:
5408 case ACTION_RUNLEVEL4:
5409 case ACTION_RUNLEVEL5:
5410 case ACTION_RESCUE:
5411 case ACTION_EMERGENCY:
5412 case ACTION_DEFAULT:
5413 r = start_with_fallback(bus);
5414 break;
5415
5416 case ACTION_RELOAD:
5417 case ACTION_REEXEC:
5418 r = reload_with_fallback(bus);
5419 break;
5420
5421 case ACTION_CANCEL_SHUTDOWN:
5422 r = send_shutdownd(0, 0, false, NULL);
5423 break;
5424
5425 case ACTION_INVALID:
5426 case ACTION_RUNLEVEL:
5427 default:
5428 assert_not_reached("Unknown action");
5429 }
5430
5431 retval = r < 0 ? EXIT_FAILURE : r;
5432
5433 finish:
5434
5435 if (bus) {
5436 dbus_connection_flush(bus);
5437 dbus_connection_close(bus);
5438 dbus_connection_unref(bus);
5439 }
5440
5441 dbus_error_free(&error);
5442
5443 dbus_shutdown();
5444
5445 strv_free(arg_property);
5446
5447 pager_close();
5448
5449 return retval;
5450 }
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