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[thirdparty/systemd.git] / src / systemctl / 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 Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 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 Lesser General Public License for more details.
17
18 You should have received a copy of the GNU Lesser 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 <locale.h>
26 #include <stdbool.h>
27 #include <string.h>
28 #include <errno.h>
29 #include <sys/ioctl.h>
30 #include <termios.h>
31 #include <unistd.h>
32 #include <fcntl.h>
33 #include <sys/socket.h>
34 #include <sys/stat.h>
35 #include <stddef.h>
36 #include <sys/prctl.h>
37 #include <dbus/dbus.h>
38
39 #include <systemd/sd-daemon.h>
40 #include <systemd/sd-shutdown.h>
41
42 #include "log.h"
43 #include "util.h"
44 #include "macro.h"
45 #include "set.h"
46 #include "utmp-wtmp.h"
47 #include "special.h"
48 #include "initreq.h"
49 #include "path-util.h"
50 #include "strv.h"
51 #include "dbus-common.h"
52 #include "cgroup-show.h"
53 #include "cgroup-util.h"
54 #include "list.h"
55 #include "path-lookup.h"
56 #include "conf-parser.h"
57 #include "exit-status.h"
58 #include "bus-errors.h"
59 #include "build.h"
60 #include "unit-name.h"
61 #include "pager.h"
62 #include "spawn-ask-password-agent.h"
63 #include "spawn-polkit-agent.h"
64 #include "install.h"
65 #include "logs-show.h"
66 #include "path-util.h"
67 #include "socket-util.h"
68
69 static const char *arg_type = NULL;
70 static const char *arg_load_state = NULL;
71 static char **arg_property = NULL;
72 static bool arg_all = false;
73 static const char *arg_job_mode = "replace";
74 static UnitFileScope arg_scope = UNIT_FILE_SYSTEM;
75 static bool arg_no_block = false;
76 static bool arg_no_legend = false;
77 static bool arg_no_pager = false;
78 static bool arg_no_wtmp = false;
79 static bool arg_no_wall = false;
80 static bool arg_no_reload = false;
81 static bool arg_dry = false;
82 static bool arg_quiet = false;
83 static bool arg_full = false;
84 static int arg_force = 0;
85 static bool arg_ask_password = true;
86 static bool arg_failed = false;
87 static bool arg_runtime = false;
88 static char **arg_wall = NULL;
89 static const char *arg_kill_who = NULL;
90 static int arg_signal = SIGTERM;
91 static const char *arg_root = NULL;
92 static usec_t arg_when = 0;
93 static enum action {
94 ACTION_INVALID,
95 ACTION_SYSTEMCTL,
96 ACTION_HALT,
97 ACTION_POWEROFF,
98 ACTION_REBOOT,
99 ACTION_KEXEC,
100 ACTION_EXIT,
101 ACTION_SUSPEND,
102 ACTION_HIBERNATE,
103 ACTION_HYBRID_SLEEP,
104 ACTION_RUNLEVEL2,
105 ACTION_RUNLEVEL3,
106 ACTION_RUNLEVEL4,
107 ACTION_RUNLEVEL5,
108 ACTION_RESCUE,
109 ACTION_EMERGENCY,
110 ACTION_DEFAULT,
111 ACTION_RELOAD,
112 ACTION_REEXEC,
113 ACTION_RUNLEVEL,
114 ACTION_CANCEL_SHUTDOWN,
115 _ACTION_MAX
116 } arg_action = ACTION_SYSTEMCTL;
117 static enum dot {
118 DOT_ALL,
119 DOT_ORDER,
120 DOT_REQUIRE
121 } arg_dot = DOT_ALL;
122 static enum transport {
123 TRANSPORT_NORMAL,
124 TRANSPORT_SSH,
125 TRANSPORT_POLKIT
126 } arg_transport = TRANSPORT_NORMAL;
127 static const char *arg_host = NULL;
128 static unsigned arg_lines = 10;
129 static OutputMode arg_output = OUTPUT_SHORT;
130
131 static bool private_bus = false;
132
133 static int daemon_reload(DBusConnection *bus, char **args);
134 static void halt_now(enum action a);
135
136 static void pager_open_if_enabled(void) {
137
138 if (arg_no_pager)
139 return;
140
141 pager_open();
142 }
143
144 static void ask_password_agent_open_if_enabled(void) {
145
146 /* Open the password agent as a child process if necessary */
147
148 if (!arg_ask_password)
149 return;
150
151 if (arg_scope != UNIT_FILE_SYSTEM)
152 return;
153
154 ask_password_agent_open();
155 }
156
157 #ifdef HAVE_LOGIND
158 static void polkit_agent_open_if_enabled(void) {
159
160 /* Open the polkit agent as a child process if necessary */
161
162 if (!arg_ask_password)
163 return;
164
165 if (arg_scope != UNIT_FILE_SYSTEM)
166 return;
167
168 polkit_agent_open();
169 }
170 #endif
171
172 static const char *ansi_highlight(bool b) {
173
174 if (!on_tty())
175 return "";
176
177 return b ? ANSI_HIGHLIGHT_ON : ANSI_HIGHLIGHT_OFF;
178 }
179
180 static const char *ansi_highlight_red(bool b) {
181
182 if (!on_tty())
183 return "";
184
185 return b ? ANSI_HIGHLIGHT_RED_ON : ANSI_HIGHLIGHT_OFF;
186 }
187
188 static const char *ansi_highlight_green(bool b) {
189
190 if (!on_tty())
191 return "";
192
193 return b ? ANSI_HIGHLIGHT_GREEN_ON : ANSI_HIGHLIGHT_OFF;
194 }
195
196 static int translate_bus_error_to_exit_status(int r, const DBusError *error) {
197 assert(error);
198
199 if (!dbus_error_is_set(error))
200 return r;
201
202 if (dbus_error_has_name(error, DBUS_ERROR_ACCESS_DENIED) ||
203 dbus_error_has_name(error, BUS_ERROR_ONLY_BY_DEPENDENCY) ||
204 dbus_error_has_name(error, BUS_ERROR_NO_ISOLATION) ||
205 dbus_error_has_name(error, BUS_ERROR_TRANSACTION_IS_DESTRUCTIVE))
206 return EXIT_NOPERMISSION;
207
208 if (dbus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT))
209 return EXIT_NOTINSTALLED;
210
211 if (dbus_error_has_name(error, BUS_ERROR_JOB_TYPE_NOT_APPLICABLE) ||
212 dbus_error_has_name(error, BUS_ERROR_NOT_SUPPORTED))
213 return EXIT_NOTIMPLEMENTED;
214
215 if (dbus_error_has_name(error, BUS_ERROR_LOAD_FAILED))
216 return EXIT_NOTCONFIGURED;
217
218 if (r != 0)
219 return r;
220
221 return EXIT_FAILURE;
222 }
223
224 static void warn_wall(enum action a) {
225 static const char *table[_ACTION_MAX] = {
226 [ACTION_HALT] = "The system is going down for system halt NOW!",
227 [ACTION_REBOOT] = "The system is going down for reboot NOW!",
228 [ACTION_POWEROFF] = "The system is going down for power-off NOW!",
229 [ACTION_KEXEC] = "The system is going down for kexec reboot NOW!",
230 [ACTION_RESCUE] = "The system is going down to rescue mode NOW!",
231 [ACTION_EMERGENCY] = "The system is going down to emergency mode NOW!",
232 [ACTION_CANCEL_SHUTDOWN] = "The system shutdown has been cancelled NOW!"
233 };
234
235 if (arg_no_wall)
236 return;
237
238 if (arg_wall) {
239 char *p;
240
241 p = strv_join(arg_wall, " ");
242 if (!p) {
243 log_error("Failed to join strings.");
244 return;
245 }
246
247 if (*p) {
248 utmp_wall(p, NULL);
249 free(p);
250 return;
251 }
252
253 free(p);
254 }
255
256 if (!table[a])
257 return;
258
259 utmp_wall(table[a], NULL);
260 }
261
262 static bool avoid_bus(void) {
263
264 if (running_in_chroot() > 0)
265 return true;
266
267 if (sd_booted() <= 0)
268 return true;
269
270 if (!isempty(arg_root))
271 return true;
272
273 if (arg_scope == UNIT_FILE_GLOBAL)
274 return true;
275
276 return false;
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_unit(const struct unit_info *u) {
310 const char *dot;
311
312 if (arg_failed)
313 return streq(u->active_state, "failed");
314
315 return (!arg_type || ((dot = strrchr(u->id, '.')) &&
316 streq(dot+1, arg_type))) &&
317 (!arg_load_state || streq(u->load_state, arg_load_state)) &&
318 (arg_all || !(streq(u->active_state, "inactive")
319 || u->following[0]) || u->job_id > 0);
320 }
321
322 static void output_units_list(const struct unit_info *unit_infos, unsigned c) {
323 unsigned id_len, max_id_len, active_len, sub_len, job_len, desc_len, n_shown = 0;
324 const struct unit_info *u;
325 int job_count = 0;
326
327 max_id_len = sizeof("UNIT")-1;
328 active_len = sizeof("ACTIVE")-1;
329 sub_len = sizeof("SUB")-1;
330 job_len = sizeof("JOB")-1;
331 desc_len = 0;
332
333 for (u = unit_infos; u < unit_infos + c; u++) {
334 if (!output_show_unit(u))
335 continue;
336
337 max_id_len = MAX(max_id_len, strlen(u->id));
338 active_len = MAX(active_len, strlen(u->active_state));
339 sub_len = MAX(sub_len, strlen(u->sub_state));
340 if (u->job_id != 0) {
341 job_len = MAX(job_len, strlen(u->job_type));
342 job_count++;
343 }
344 }
345
346 if (!arg_full) {
347 unsigned basic_len;
348 id_len = MIN(max_id_len, 25);
349 basic_len = 5 + id_len + 5 + active_len + sub_len;
350 if (job_count)
351 basic_len += job_len + 1;
352 if (basic_len < (unsigned) columns()) {
353 unsigned extra_len, incr;
354 extra_len = columns() - basic_len;
355 /* Either UNIT already got 25, or is fully satisfied.
356 * Grant up to 25 to DESC now. */
357 incr = MIN(extra_len, 25);
358 desc_len += incr;
359 extra_len -= incr;
360 /* split the remaining space between UNIT and DESC,
361 * but do not give UNIT more than it needs. */
362 if (extra_len > 0) {
363 incr = MIN(extra_len / 2, max_id_len - id_len);
364 id_len += incr;
365 desc_len += extra_len - incr;
366 }
367 }
368 } else
369 id_len = max_id_len;
370
371 for (u = unit_infos; u < unit_infos + c; u++) {
372 char *e;
373 const char *on_loaded, *off_loaded;
374 const char *on_active, *off_active;
375
376 if (!output_show_unit(u))
377 continue;
378
379 if (!n_shown && !arg_no_legend) {
380 printf("%-*s %-6s %-*s %-*s ", id_len, "UNIT", "LOAD",
381 active_len, "ACTIVE", sub_len, "SUB");
382 if (job_count)
383 printf("%-*s ", job_len, "JOB");
384 if (!arg_full && arg_no_pager)
385 printf("%.*s\n", desc_len, "DESCRIPTION");
386 else
387 printf("%s\n", "DESCRIPTION");
388 }
389
390 n_shown++;
391
392 if (streq(u->load_state, "error")) {
393 on_loaded = ansi_highlight_red(true);
394 off_loaded = ansi_highlight_red(false);
395 } else
396 on_loaded = off_loaded = "";
397
398 if (streq(u->active_state, "failed")) {
399 on_active = ansi_highlight_red(true);
400 off_active = ansi_highlight_red(false);
401 } else
402 on_active = off_active = "";
403
404 e = arg_full ? NULL : ellipsize(u->id, id_len, 33);
405
406 printf("%-*s %s%-6s%s %s%-*s %-*s%s %-*s",
407 id_len, e ? e : u->id,
408 on_loaded, u->load_state, off_loaded,
409 on_active, active_len, u->active_state,
410 sub_len, u->sub_state, off_active,
411 job_count ? job_len + 1 : 0, u->job_id ? u->job_type : "");
412 if (!arg_full && arg_no_pager)
413 printf("%.*s\n", desc_len, u->description);
414 else
415 printf("%s\n", u->description);
416
417 free(e);
418 }
419
420 if (!arg_no_legend) {
421 const char *on, *off;
422
423 if (n_shown) {
424 printf("\nLOAD = Reflects whether the unit definition was properly loaded.\n"
425 "ACTIVE = The high-level unit activation state, i.e. generalization of SUB.\n"
426 "SUB = The low-level unit activation state, values depend on unit type.\n");
427 if (job_count)
428 printf("JOB = Pending job for the unit.\n");
429 puts("");
430 on = ansi_highlight(true);
431 off = ansi_highlight(false);
432 } else {
433 on = ansi_highlight_red(true);
434 off = ansi_highlight_red(false);
435 }
436
437 if (arg_all)
438 printf("%s%u loaded units listed.%s\n"
439 "To show all installed unit files use 'systemctl list-unit-files'.\n",
440 on, n_shown, off);
441 else
442 printf("%s%u loaded units listed.%s Pass --all to see loaded but inactive units, too.\n"
443 "To show all installed unit files use 'systemctl list-unit-files'.\n",
444 on, n_shown, off);
445 }
446 }
447
448 static int list_units(DBusConnection *bus, char **args) {
449 DBusMessage *reply = NULL;
450 int r;
451 DBusMessageIter iter, sub, sub2;
452 unsigned c = 0, n_units = 0;
453 struct unit_info *unit_infos = NULL;
454
455 pager_open_if_enabled();
456
457 r = bus_method_call_with_reply (
458 bus,
459 "org.freedesktop.systemd1",
460 "/org/freedesktop/systemd1",
461 "org.freedesktop.systemd1.Manager",
462 "ListUnits",
463 &reply,
464 NULL,
465 DBUS_TYPE_INVALID);
466 if (r)
467 goto finish;
468
469 if (!dbus_message_iter_init(reply, &iter) ||
470 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
471 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
472 log_error("Failed to parse reply.");
473 r = -EIO;
474 goto finish;
475 }
476
477 dbus_message_iter_recurse(&iter, &sub);
478
479 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
480 struct unit_info *u;
481
482 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
483 log_error("Failed to parse reply.");
484 r = -EIO;
485 goto finish;
486 }
487
488 if (c >= n_units) {
489 struct unit_info *w;
490
491 n_units = MAX(2*c, 16);
492 w = realloc(unit_infos, sizeof(struct unit_info) * n_units);
493
494 if (!w) {
495 log_error("Failed to allocate unit array.");
496 r = -ENOMEM;
497 goto finish;
498 }
499
500 unit_infos = w;
501 }
502
503 u = unit_infos+c;
504
505 dbus_message_iter_recurse(&sub, &sub2);
506
507 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->id, true) < 0 ||
508 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->description, true) < 0 ||
509 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->load_state, true) < 0 ||
510 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->active_state, true) < 0 ||
511 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->sub_state, true) < 0 ||
512 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->following, true) < 0 ||
513 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &u->unit_path, true) < 0 ||
514 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &u->job_id, true) < 0 ||
515 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->job_type, true) < 0 ||
516 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &u->job_path, false) < 0) {
517 log_error("Failed to parse reply.");
518 r = -EIO;
519 goto finish;
520 }
521
522 dbus_message_iter_next(&sub);
523 c++;
524 }
525
526 if (c > 0) {
527 qsort(unit_infos, c, sizeof(struct unit_info), compare_unit_info);
528 output_units_list(unit_infos, c);
529 }
530
531 finish:
532 if (reply)
533 dbus_message_unref(reply);
534
535 free(unit_infos);
536
537 return r;
538 }
539
540 static int compare_unit_file_list(const void *a, const void *b) {
541 const char *d1, *d2;
542 const UnitFileList *u = a, *v = b;
543
544 d1 = strrchr(u->path, '.');
545 d2 = strrchr(v->path, '.');
546
547 if (d1 && d2) {
548 int r;
549
550 r = strcasecmp(d1, d2);
551 if (r != 0)
552 return r;
553 }
554
555 return strcasecmp(path_get_file_name(u->path), path_get_file_name(v->path));
556 }
557
558 static bool output_show_unit_file(const UnitFileList *u) {
559 const char *dot;
560
561 return !arg_type || ((dot = strrchr(u->path, '.')) && streq(dot+1, arg_type));
562 }
563
564 static void output_unit_file_list(const UnitFileList *units, unsigned c) {
565 unsigned max_id_len, id_cols, state_cols, n_shown = 0;
566 const UnitFileList *u;
567
568 max_id_len = sizeof("UNIT FILE")-1;
569 state_cols = sizeof("STATE")-1;
570 for (u = units; u < units + c; u++) {
571 if (!output_show_unit_file(u))
572 continue;
573
574 max_id_len = MAX(max_id_len, strlen(path_get_file_name(u->path)));
575 state_cols = MAX(state_cols, strlen(unit_file_state_to_string(u->state)));
576 }
577
578 if (!arg_full) {
579 unsigned basic_cols;
580 id_cols = MIN(max_id_len, 25);
581 basic_cols = 1 + id_cols + state_cols;
582 if (basic_cols < (unsigned) columns())
583 id_cols += MIN(columns() - basic_cols, max_id_len - id_cols);
584 } else
585 id_cols = max_id_len;
586
587 if (!arg_no_legend)
588 printf("%-*s %-*s\n", id_cols, "UNIT FILE", state_cols, "STATE");
589
590 for (u = units; u < units + c; u++) {
591 char *e;
592 const char *on, *off;
593 const char *id;
594
595 if (!output_show_unit_file(u))
596 continue;
597
598 n_shown++;
599
600 if (u->state == UNIT_FILE_MASKED ||
601 u->state == UNIT_FILE_MASKED_RUNTIME ||
602 u->state == UNIT_FILE_DISABLED ||
603 u->state == UNIT_FILE_INVALID) {
604 on = ansi_highlight_red(true);
605 off = ansi_highlight_red(false);
606 } else if (u->state == UNIT_FILE_ENABLED) {
607 on = ansi_highlight_green(true);
608 off = ansi_highlight_green(false);
609 } else
610 on = off = "";
611
612 id = path_get_file_name(u->path);
613
614 e = arg_full ? NULL : ellipsize(id, id_cols, 33);
615
616 printf("%-*s %s%-*s%s\n",
617 id_cols, e ? e : id,
618 on, state_cols, unit_file_state_to_string(u->state), off);
619
620 free(e);
621 }
622
623 if (!arg_no_legend)
624 printf("\n%u unit files listed.\n", n_shown);
625 }
626
627 static int list_unit_files(DBusConnection *bus, char **args) {
628 DBusMessage *reply = NULL;
629 int r;
630 DBusMessageIter iter, sub, sub2;
631 unsigned c = 0, n_units = 0;
632 UnitFileList *units = NULL;
633
634 pager_open_if_enabled();
635
636 if (avoid_bus()) {
637 Hashmap *h;
638 UnitFileList *u;
639 Iterator i;
640
641 h = hashmap_new(string_hash_func, string_compare_func);
642 if (!h)
643 return log_oom();
644
645 r = unit_file_get_list(arg_scope, arg_root, h);
646 if (r < 0) {
647 unit_file_list_free(h);
648 log_error("Failed to get unit file list: %s", strerror(-r));
649 return r;
650 }
651
652 n_units = hashmap_size(h);
653 units = new(UnitFileList, n_units);
654 if (!units) {
655 unit_file_list_free(h);
656 return log_oom();
657 }
658
659 HASHMAP_FOREACH(u, h, i) {
660 memcpy(units + c++, u, sizeof(UnitFileList));
661 free(u);
662 }
663
664 hashmap_free(h);
665 } else {
666 r = bus_method_call_with_reply (
667 bus,
668 "org.freedesktop.systemd1",
669 "/org/freedesktop/systemd1",
670 "org.freedesktop.systemd1.Manager",
671 "ListUnitFiles",
672 &reply,
673 NULL,
674 DBUS_TYPE_INVALID);
675 if (r)
676 goto finish;
677
678 if (!dbus_message_iter_init(reply, &iter) ||
679 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
680 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
681 log_error("Failed to parse reply.");
682 r = -EIO;
683 goto finish;
684 }
685
686 dbus_message_iter_recurse(&iter, &sub);
687
688 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
689 UnitFileList *u;
690 const char *state;
691
692 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
693 log_error("Failed to parse reply.");
694 r = -EIO;
695 goto finish;
696 }
697
698 if (c >= n_units) {
699 UnitFileList *w;
700
701 n_units = MAX(2*c, 16);
702 w = realloc(units, sizeof(struct UnitFileList) * n_units);
703
704 if (!w) {
705 log_error("Failed to allocate unit array.");
706 r = -ENOMEM;
707 goto finish;
708 }
709
710 units = w;
711 }
712
713 u = units+c;
714
715 dbus_message_iter_recurse(&sub, &sub2);
716
717 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->path, true) < 0 ||
718 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &state, false) < 0) {
719 log_error("Failed to parse reply.");
720 r = -EIO;
721 goto finish;
722 }
723
724 u->state = unit_file_state_from_string(state);
725
726 dbus_message_iter_next(&sub);
727 c++;
728 }
729 }
730
731 if (c > 0) {
732 qsort(units, c, sizeof(UnitFileList), compare_unit_file_list);
733 output_unit_file_list(units, c);
734 }
735
736 r = 0;
737
738 finish:
739 if (reply)
740 dbus_message_unref(reply);
741
742 free(units);
743
744 return r;
745 }
746
747 static int dot_one_property(const char *name, const char *prop, DBusMessageIter *iter) {
748 static const char * const colors[] = {
749 "Requires", "[color=\"black\"]",
750 "RequiresOverridable", "[color=\"black\"]",
751 "Requisite", "[color=\"darkblue\"]",
752 "RequisiteOverridable", "[color=\"darkblue\"]",
753 "Wants", "[color=\"grey66\"]",
754 "Conflicts", "[color=\"red\"]",
755 "ConflictedBy", "[color=\"red\"]",
756 "After", "[color=\"green\"]"
757 };
758
759 const char *c = NULL;
760 unsigned i;
761
762 assert(name);
763 assert(prop);
764 assert(iter);
765
766 for (i = 0; i < ELEMENTSOF(colors); i += 2)
767 if (streq(colors[i], prop)) {
768 c = colors[i+1];
769 break;
770 }
771
772 if (!c)
773 return 0;
774
775 if (arg_dot != DOT_ALL)
776 if ((arg_dot == DOT_ORDER) != streq(prop, "After"))
777 return 0;
778
779 switch (dbus_message_iter_get_arg_type(iter)) {
780
781 case DBUS_TYPE_ARRAY:
782
783 if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRING) {
784 DBusMessageIter sub;
785
786 dbus_message_iter_recurse(iter, &sub);
787
788 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
789 const char *s;
790
791 assert(dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING);
792 dbus_message_iter_get_basic(&sub, &s);
793 printf("\t\"%s\"->\"%s\" %s;\n", name, s, c);
794
795 dbus_message_iter_next(&sub);
796 }
797
798 return 0;
799 }
800 }
801
802 return 0;
803 }
804
805 static int dot_one(DBusConnection *bus, const char *name, const char *path) {
806 DBusMessage *reply = NULL;
807 const char *interface = "org.freedesktop.systemd1.Unit";
808 int r;
809 DBusMessageIter iter, sub, sub2, sub3;
810
811 assert(path);
812
813 r = bus_method_call_with_reply (
814 bus,
815 "org.freedesktop.systemd1",
816 path,
817 "org.freedesktop.DBus.Properties",
818 "GetAll",
819 &reply,
820 NULL,
821 DBUS_TYPE_STRING, &interface,
822 DBUS_TYPE_INVALID);
823 if (r)
824 goto finish;
825
826 if (!dbus_message_iter_init(reply, &iter) ||
827 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
828 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_DICT_ENTRY) {
829 log_error("Failed to parse reply.");
830 r = -EIO;
831 goto finish;
832 }
833
834 dbus_message_iter_recurse(&iter, &sub);
835
836 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
837 const char *prop;
838
839 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_DICT_ENTRY) {
840 log_error("Failed to parse reply.");
841 r = -EIO;
842 goto finish;
843 }
844
845 dbus_message_iter_recurse(&sub, &sub2);
846
847 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &prop, true) < 0) {
848 log_error("Failed to parse reply.");
849 r = -EIO;
850 goto finish;
851 }
852
853 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT) {
854 log_error("Failed to parse reply.");
855 r = -EIO;
856 goto finish;
857 }
858
859 dbus_message_iter_recurse(&sub2, &sub3);
860
861 if (dot_one_property(name, prop, &sub3)) {
862 log_error("Failed to parse reply.");
863 r = -EIO;
864 goto finish;
865 }
866
867 dbus_message_iter_next(&sub);
868 }
869
870 finish:
871 if (reply)
872 dbus_message_unref(reply);
873
874 return r;
875 }
876
877 static int dot(DBusConnection *bus, char **args) {
878 DBusMessage *reply = NULL;
879 int r;
880 DBusMessageIter iter, sub, sub2;
881
882 r = bus_method_call_with_reply (
883 bus,
884 "org.freedesktop.systemd1",
885 "/org/freedesktop/systemd1",
886 "org.freedesktop.systemd1.Manager",
887 "ListUnits",
888 &reply,
889 NULL,
890 DBUS_TYPE_INVALID);
891 if (r)
892 goto finish;
893
894 if (!dbus_message_iter_init(reply, &iter) ||
895 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
896 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
897 log_error("Failed to parse reply.");
898 r = -EIO;
899 goto finish;
900 }
901
902 printf("digraph systemd {\n");
903
904 dbus_message_iter_recurse(&iter, &sub);
905 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
906 const char *id, *description, *load_state, *active_state, *sub_state, *following, *unit_path;
907
908 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
909 log_error("Failed to parse reply.");
910 r = -EIO;
911 goto finish;
912 }
913
914 dbus_message_iter_recurse(&sub, &sub2);
915
916 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &id, true) < 0 ||
917 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &description, true) < 0 ||
918 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &load_state, true) < 0 ||
919 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &active_state, true) < 0 ||
920 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &sub_state, true) < 0 ||
921 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &following, true) < 0 ||
922 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &unit_path, true) < 0) {
923 log_error("Failed to parse reply.");
924 r = -EIO;
925 goto finish;
926 }
927
928 if ((r = dot_one(bus, id, unit_path)) < 0)
929 goto finish;
930
931 /* printf("\t\"%s\";\n", id); */
932 dbus_message_iter_next(&sub);
933 }
934
935 printf("}\n");
936
937 log_info(" Color legend: black = Requires\n"
938 " dark blue = Requisite\n"
939 " dark grey = Wants\n"
940 " red = Conflicts\n"
941 " green = After\n");
942
943 if (on_tty())
944 log_notice("-- You probably want to process this output with graphviz' dot tool.\n"
945 "-- Try a shell pipeline like 'systemctl dot | dot -Tsvg > systemd.svg'!\n");
946
947 r = 0;
948
949 finish:
950 if (reply)
951 dbus_message_unref(reply);
952
953 return r;
954 }
955
956 static int list_jobs(DBusConnection *bus, char **args) {
957 DBusMessage *reply = NULL;
958 int r;
959 DBusMessageIter iter, sub, sub2;
960 unsigned k = 0;
961
962 pager_open_if_enabled();
963
964 r = bus_method_call_with_reply (
965 bus,
966 "org.freedesktop.systemd1",
967 "/org/freedesktop/systemd1",
968 "org.freedesktop.systemd1.Manager",
969 "ListJobs",
970 &reply,
971 NULL,
972 DBUS_TYPE_INVALID);
973 if (r)
974 goto finish;
975
976 if (!dbus_message_iter_init(reply, &iter) ||
977 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
978 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
979 log_error("Failed to parse reply.");
980 r = -EIO;
981 goto finish;
982 }
983
984 dbus_message_iter_recurse(&iter, &sub);
985
986 if (on_tty())
987 printf("%4s %-25s %-15s %-7s\n", "JOB", "UNIT", "TYPE", "STATE");
988
989 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
990 const char *name, *type, *state, *job_path, *unit_path;
991 uint32_t id;
992 char *e;
993
994 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
995 log_error("Failed to parse reply.");
996 r = -EIO;
997 goto finish;
998 }
999
1000 dbus_message_iter_recurse(&sub, &sub2);
1001
1002 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &id, true) < 0 ||
1003 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0 ||
1004 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) < 0 ||
1005 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &state, true) < 0 ||
1006 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &job_path, true) < 0 ||
1007 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &unit_path, false) < 0) {
1008 log_error("Failed to parse reply.");
1009 r = -EIO;
1010 goto finish;
1011 }
1012
1013 e = arg_full ? NULL : ellipsize(name, 25, 33);
1014 printf("%4u %-25s %-15s %-7s\n", id, e ? e : name, type, state);
1015 free(e);
1016
1017 k++;
1018
1019 dbus_message_iter_next(&sub);
1020 }
1021
1022 if (on_tty())
1023 printf("\n%u jobs listed.\n", k);
1024
1025 r = 0;
1026
1027 finish:
1028 if (reply)
1029 dbus_message_unref(reply);
1030
1031 return r;
1032 }
1033
1034 static int load_unit(DBusConnection *bus, char **args) {
1035 int r = 0;
1036 char **name, *n;
1037
1038 assert(args);
1039
1040 STRV_FOREACH(name, args+1) {
1041 n = unit_name_mangle(*name);
1042 r = bus_method_call_with_reply (
1043 bus,
1044 "org.freedesktop.systemd1",
1045 "/org/freedesktop/systemd1",
1046 "org.freedesktop.systemd1.Manager",
1047 "LoadUnit",
1048 NULL,
1049 NULL,
1050 DBUS_TYPE_STRING, n ? &n : name,
1051 DBUS_TYPE_INVALID);
1052 free(n);
1053 if (r)
1054 goto finish;
1055 }
1056
1057 finish:
1058 return r;
1059 }
1060
1061 static int cancel_job(DBusConnection *bus, char **args) {
1062 DBusMessage *reply = NULL;
1063 int r = 0;
1064 char **name;
1065
1066 assert(args);
1067
1068 if (strv_length(args) <= 1)
1069 return daemon_reload(bus, args);
1070
1071 STRV_FOREACH(name, args+1) {
1072 unsigned id;
1073 const char *path;
1074
1075 r = safe_atou(*name, &id);
1076 if (r < 0) {
1077 log_error("Failed to parse job id: %s", strerror(-r));
1078 goto finish;
1079 }
1080 assert_cc(sizeof(uint32_t) == sizeof(id));
1081
1082 r = bus_method_call_with_reply (
1083 bus,
1084 "org.freedesktop.systemd1",
1085 "/org/freedesktop/systemd1",
1086 "org.freedesktop.systemd1.Manager",
1087 "GetJob",
1088 &reply,
1089 NULL,
1090 DBUS_TYPE_UINT32, &id,
1091 DBUS_TYPE_INVALID);
1092 if (r)
1093 goto finish;
1094
1095 if (!dbus_message_get_args(reply, NULL,
1096 DBUS_TYPE_OBJECT_PATH, &path,
1097 DBUS_TYPE_INVALID)) {
1098 log_error("Failed to parse reply");
1099 dbus_message_unref(reply);
1100 r = -EIO;
1101 goto finish;
1102 }
1103 dbus_message_unref(reply);
1104
1105 r = bus_method_call_with_reply (
1106 bus,
1107 "org.freedesktop.systemd1",
1108 path,
1109 "org.freedesktop.systemd1.Job",
1110 "Cancel",
1111 NULL,
1112 NULL,
1113 DBUS_TYPE_INVALID);
1114 if (r)
1115 goto finish;
1116 }
1117
1118 finish:
1119 return r;
1120 }
1121
1122 static bool need_daemon_reload(DBusConnection *bus, const char *unit) {
1123 DBusMessage *reply = NULL;
1124 dbus_bool_t b = FALSE;
1125 DBusMessageIter iter, sub;
1126 const char
1127 *interface = "org.freedesktop.systemd1.Unit",
1128 *property = "NeedDaemonReload",
1129 *path;
1130 char *n;
1131 int r;
1132
1133 /* We ignore all errors here, since this is used to show a warning only */
1134
1135 n = unit_name_mangle(unit);
1136 r = bus_method_call_with_reply (
1137 bus,
1138 "org.freedesktop.systemd1",
1139 "/org/freedesktop/systemd1",
1140 "org.freedesktop.systemd1.Manager",
1141 "GetUnit",
1142 &reply,
1143 NULL,
1144 DBUS_TYPE_STRING, n ? (const char**) &n : &unit,
1145 DBUS_TYPE_INVALID);
1146 free(n);
1147 if (r)
1148 goto finish;
1149
1150 if (!dbus_message_get_args(reply, NULL,
1151 DBUS_TYPE_OBJECT_PATH, &path,
1152 DBUS_TYPE_INVALID))
1153 goto finish;
1154
1155 dbus_message_unref(reply);
1156 r = bus_method_call_with_reply (
1157 bus,
1158 "org.freedesktop.systemd1",
1159 path,
1160 "org.freedesktop.DBus.Properties",
1161 "Get",
1162 &reply,
1163 NULL,
1164 DBUS_TYPE_STRING, &interface,
1165 DBUS_TYPE_STRING, &property,
1166 DBUS_TYPE_INVALID);
1167 if (r)
1168 goto finish;
1169
1170 if (!dbus_message_iter_init(reply, &iter) ||
1171 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT)
1172 goto finish;
1173
1174 dbus_message_iter_recurse(&iter, &sub);
1175
1176 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_BOOLEAN)
1177 goto finish;
1178
1179 dbus_message_iter_get_basic(&sub, &b);
1180
1181 finish:
1182 if (reply)
1183 dbus_message_unref(reply);
1184
1185 return b;
1186 }
1187
1188 typedef struct WaitData {
1189 Set *set;
1190
1191 char *name;
1192 char *result;
1193 } WaitData;
1194
1195 static DBusHandlerResult wait_filter(DBusConnection *connection, DBusMessage *message, void *data) {
1196 DBusError error;
1197 WaitData *d = data;
1198
1199 assert(connection);
1200 assert(message);
1201 assert(d);
1202
1203 dbus_error_init(&error);
1204
1205 log_debug("Got D-Bus request: %s.%s() on %s",
1206 dbus_message_get_interface(message),
1207 dbus_message_get_member(message),
1208 dbus_message_get_path(message));
1209
1210 if (dbus_message_is_signal(message, DBUS_INTERFACE_LOCAL, "Disconnected")) {
1211 log_error("Warning! D-Bus connection terminated.");
1212 dbus_connection_close(connection);
1213
1214 } else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "JobRemoved")) {
1215 uint32_t id;
1216 const char *path, *result, *unit;
1217 dbus_bool_t success = true;
1218
1219 if (dbus_message_get_args(message, &error,
1220 DBUS_TYPE_UINT32, &id,
1221 DBUS_TYPE_OBJECT_PATH, &path,
1222 DBUS_TYPE_STRING, &unit,
1223 DBUS_TYPE_STRING, &result,
1224 DBUS_TYPE_INVALID)) {
1225 char *p;
1226
1227 p = set_remove(d->set, (char*) path);
1228 free(p);
1229
1230 if (!isempty(result))
1231 d->result = strdup(result);
1232
1233 if (!isempty(unit))
1234 d->name = strdup(unit);
1235
1236 goto finish;
1237 }
1238 #ifndef LEGACY
1239 dbus_error_free(&error);
1240 if (dbus_message_get_args(message, &error,
1241 DBUS_TYPE_UINT32, &id,
1242 DBUS_TYPE_OBJECT_PATH, &path,
1243 DBUS_TYPE_STRING, &result,
1244 DBUS_TYPE_INVALID)) {
1245 char *p;
1246
1247 /* Compatibility with older systemd versions <
1248 * 183 during upgrades. This should be dropped
1249 * one day. */
1250 p = set_remove(d->set, (char*) path);
1251 free(p);
1252
1253 if (*result)
1254 d->result = strdup(result);
1255
1256 goto finish;
1257 }
1258
1259 dbus_error_free(&error);
1260 if (dbus_message_get_args(message, &error,
1261 DBUS_TYPE_UINT32, &id,
1262 DBUS_TYPE_OBJECT_PATH, &path,
1263 DBUS_TYPE_BOOLEAN, &success,
1264 DBUS_TYPE_INVALID)) {
1265 char *p;
1266
1267 /* Compatibility with older systemd versions <
1268 * 19 during upgrades. This should be dropped
1269 * one day */
1270
1271 p = set_remove(d->set, (char*) path);
1272 free(p);
1273
1274 if (!success)
1275 d->result = strdup("failed");
1276
1277 goto finish;
1278 }
1279 #endif
1280
1281 log_error("Failed to parse message: %s", bus_error_message(&error));
1282 }
1283
1284 finish:
1285 dbus_error_free(&error);
1286 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1287 }
1288
1289 static int enable_wait_for_jobs(DBusConnection *bus) {
1290 DBusError error;
1291
1292 assert(bus);
1293
1294 if (private_bus)
1295 return 0;
1296
1297 dbus_error_init(&error);
1298 dbus_bus_add_match(bus,
1299 "type='signal',"
1300 "sender='org.freedesktop.systemd1',"
1301 "interface='org.freedesktop.systemd1.Manager',"
1302 "member='JobRemoved',"
1303 "path='/org/freedesktop/systemd1'",
1304 &error);
1305
1306 if (dbus_error_is_set(&error)) {
1307 log_error("Failed to add match: %s", bus_error_message(&error));
1308 dbus_error_free(&error);
1309 return -EIO;
1310 }
1311
1312 /* This is slightly dirty, since we don't undo the match registrations. */
1313 return 0;
1314 }
1315
1316 static int wait_for_jobs(DBusConnection *bus, Set *s) {
1317 int r = 0;
1318 WaitData d;
1319
1320 assert(bus);
1321 assert(s);
1322
1323 zero(d);
1324 d.set = s;
1325
1326 if (!dbus_connection_add_filter(bus, wait_filter, &d, NULL))
1327 return log_oom();
1328
1329 while (!set_isempty(s)) {
1330
1331 if (!dbus_connection_read_write_dispatch(bus, -1)) {
1332 log_error("Disconnected from bus.");
1333 return -ECONNREFUSED;
1334 }
1335
1336 if (!d.result)
1337 goto free_name;
1338
1339 if (!arg_quiet) {
1340 if (streq(d.result, "timeout"))
1341 log_error("Job for %s timed out.", strna(d.name));
1342 else if (streq(d.result, "canceled"))
1343 log_error("Job for %s canceled.", strna(d.name));
1344 else if (streq(d.result, "dependency"))
1345 log_error("A dependency job for %s failed. See 'journalctl -xn' for details.", strna(d.name));
1346 else if (!streq(d.result, "done") && !streq(d.result, "skipped"))
1347 log_error("Job for %s failed. See 'systemctl status %s' and 'journalctl -xn' for details.", strna(d.name), strna(d.name));
1348 }
1349
1350 if (streq_ptr(d.result, "timeout"))
1351 r = -ETIME;
1352 else if (streq_ptr(d.result, "canceled"))
1353 r = -ECANCELED;
1354 else if (!streq_ptr(d.result, "done") && !streq_ptr(d.result, "skipped"))
1355 r = -EIO;
1356
1357 free(d.result);
1358 d.result = NULL;
1359
1360 free_name:
1361 free(d.name);
1362 d.name = NULL;
1363 }
1364
1365 dbus_connection_remove_filter(bus, wait_filter, &d);
1366 return r;
1367 }
1368
1369 static int check_one_unit(DBusConnection *bus, char *name, char **check_states, bool quiet) {
1370 DBusMessage *reply = NULL;
1371 DBusMessageIter iter, sub;
1372 const char
1373 *interface = "org.freedesktop.systemd1.Unit",
1374 *property = "ActiveState";
1375 const char *path = NULL;
1376 const char *state;
1377 int r;
1378 char *n;
1379
1380 assert(name);
1381
1382 n = unit_name_mangle(name);
1383 r = bus_method_call_with_reply (
1384 bus,
1385 "org.freedesktop.systemd1",
1386 "/org/freedesktop/systemd1",
1387 "org.freedesktop.systemd1.Manager",
1388 "GetUnit",
1389 &reply,
1390 NULL,
1391 DBUS_TYPE_STRING, n ? &n : &name,
1392 DBUS_TYPE_INVALID);
1393 free(n);
1394 if (r) {
1395 if ((r != -ENOMEM) && (!quiet))
1396 puts("unknown");
1397 goto finish;
1398 }
1399
1400 if (!dbus_message_get_args(reply, NULL,
1401 DBUS_TYPE_OBJECT_PATH, &path,
1402 DBUS_TYPE_INVALID)) {
1403 log_error("Failed to parse reply.");
1404 r = -EIO;
1405 goto finish;
1406 }
1407
1408 dbus_message_unref(reply);
1409 r = bus_method_call_with_reply (
1410 bus,
1411 "org.freedesktop.systemd1",
1412 path,
1413 "org.freedesktop.DBus.Properties",
1414 "Get",
1415 &reply,
1416 NULL,
1417 DBUS_TYPE_STRING, &interface,
1418 DBUS_TYPE_STRING, &property,
1419 DBUS_TYPE_INVALID);
1420 if (r)
1421 goto finish;
1422
1423 if (!dbus_message_iter_init(reply, &iter) ||
1424 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
1425 log_error("Failed to parse reply.");
1426 r = -EIO;
1427 goto finish;
1428 }
1429
1430 dbus_message_iter_recurse(&iter, &sub);
1431
1432 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
1433 log_error("Failed to parse reply.");
1434 r = -EIO;
1435 goto finish;
1436 }
1437
1438 dbus_message_iter_get_basic(&sub, &state);
1439
1440 if (!quiet)
1441 puts(state);
1442
1443 if (strv_find(check_states, state))
1444 r = 0;
1445 else
1446 r = 3; /* According to LSB: "program is not running" */
1447
1448 finish:
1449 if (reply)
1450 dbus_message_unref(reply);
1451
1452 return r;
1453 }
1454
1455 static void check_triggering_units(
1456 DBusConnection *bus,
1457 const char *unit_name) {
1458
1459 _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
1460 DBusMessageIter iter, sub;
1461 char *service_trigger = NULL;
1462 const char *interface = "org.freedesktop.systemd1.Unit",
1463 *triggered_by_property = "TriggeredBy";
1464
1465 char _cleanup_free_ *unit_path = NULL, *n = NULL;
1466 bool print_warning_label = true;
1467 int r;
1468
1469 n = unit_name_mangle(unit_name);
1470 if (!n) {
1471 log_oom();
1472 return;
1473 }
1474
1475 unit_path = unit_dbus_path_from_name(n);
1476 if (!unit_path) {
1477 log_oom();
1478 return;
1479 }
1480
1481 r = bus_method_call_with_reply (
1482 bus,
1483 "org.freedesktop.systemd1",
1484 unit_path,
1485 "org.freedesktop.DBus.Properties",
1486 "Get",
1487 &reply,
1488 NULL,
1489 DBUS_TYPE_STRING, &interface,
1490 DBUS_TYPE_STRING, &triggered_by_property,
1491 DBUS_TYPE_INVALID);
1492 if (r)
1493 return;
1494
1495 if (!dbus_message_iter_init(reply, &iter) ||
1496 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
1497 log_error("Failed to parse reply.");
1498 return;
1499 }
1500
1501 dbus_message_iter_recurse(&iter, &sub);
1502 dbus_message_iter_recurse(&sub, &iter);
1503 sub = iter;
1504
1505 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
1506 char **check_states = NULL;
1507
1508 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
1509 log_error("Failed to parse reply.");
1510 return;
1511 }
1512
1513 dbus_message_iter_get_basic(&sub, &service_trigger);
1514
1515 check_states = strv_new("active", "reloading", NULL);
1516 r = check_one_unit(bus, service_trigger, check_states, true);
1517 strv_free(check_states);
1518 if (r < 0)
1519 return;
1520 if (r == 0) {
1521 if (print_warning_label) {
1522 log_warning("Warning: Stopping %s, but it can still be activated by:", unit_name);
1523 print_warning_label = false;
1524 }
1525 log_warning(" %s", service_trigger);
1526 }
1527
1528 dbus_message_iter_next(&sub);
1529 }
1530 }
1531
1532 static int start_unit_one(
1533 DBusConnection *bus,
1534 const char *method,
1535 const char *name,
1536 const char *mode,
1537 DBusError *error,
1538 Set *s) {
1539
1540 _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
1541 const char *path;
1542 int r;
1543 _cleanup_free_ char *n, *p = NULL;
1544
1545 assert(method);
1546 assert(name);
1547 assert(mode);
1548 assert(error);
1549
1550 n = unit_name_mangle(name);
1551 if (!n)
1552 return log_oom();
1553
1554 r = bus_method_call_with_reply(
1555 bus,
1556 "org.freedesktop.systemd1",
1557 "/org/freedesktop/systemd1",
1558 "org.freedesktop.systemd1.Manager",
1559 method,
1560 &reply,
1561 error,
1562 DBUS_TYPE_STRING, &n,
1563 DBUS_TYPE_STRING, &mode,
1564 DBUS_TYPE_INVALID);
1565 if (r) {
1566 if (r == -ENOENT && arg_action != ACTION_SYSTEMCTL)
1567 /* There's always a fallback possible for
1568 * legacy actions. */
1569 r = -EADDRNOTAVAIL;
1570 else
1571 log_error("Failed to issue method call: %s", bus_error_message(error));
1572
1573 return r;
1574 }
1575
1576 if (!dbus_message_get_args(reply, error,
1577 DBUS_TYPE_OBJECT_PATH, &path,
1578 DBUS_TYPE_INVALID)) {
1579 log_error("Failed to parse reply: %s", bus_error_message(error));
1580 return -EIO;
1581 }
1582
1583 if (need_daemon_reload(bus, n))
1584 log_warning("Warning: Unit file of %s changed on disk, 'systemctl %s daemon-reload' recommended.",
1585 n, arg_scope == UNIT_FILE_SYSTEM ? "--system" : "--user");
1586
1587 if (s) {
1588 p = strdup(path);
1589 if (!p)
1590 return log_oom();
1591
1592 r = set_put(s, p);
1593 if (r < 0) {
1594 log_error("Failed to add path to set.");
1595 return r;
1596 }
1597
1598 p = NULL;
1599 }
1600
1601 return 0;
1602 }
1603
1604 static enum action verb_to_action(const char *verb) {
1605 if (streq(verb, "halt"))
1606 return ACTION_HALT;
1607 else if (streq(verb, "poweroff"))
1608 return ACTION_POWEROFF;
1609 else if (streq(verb, "reboot"))
1610 return ACTION_REBOOT;
1611 else if (streq(verb, "kexec"))
1612 return ACTION_KEXEC;
1613 else if (streq(verb, "rescue"))
1614 return ACTION_RESCUE;
1615 else if (streq(verb, "emergency"))
1616 return ACTION_EMERGENCY;
1617 else if (streq(verb, "default"))
1618 return ACTION_DEFAULT;
1619 else if (streq(verb, "exit"))
1620 return ACTION_EXIT;
1621 else if (streq(verb, "suspend"))
1622 return ACTION_SUSPEND;
1623 else if (streq(verb, "hibernate"))
1624 return ACTION_HIBERNATE;
1625 else if (streq(verb, "hybrid-sleep"))
1626 return ACTION_HYBRID_SLEEP;
1627 else
1628 return ACTION_INVALID;
1629 }
1630
1631 static int start_unit(DBusConnection *bus, char **args) {
1632
1633 static const char * const table[_ACTION_MAX] = {
1634 [ACTION_HALT] = SPECIAL_HALT_TARGET,
1635 [ACTION_POWEROFF] = SPECIAL_POWEROFF_TARGET,
1636 [ACTION_REBOOT] = SPECIAL_REBOOT_TARGET,
1637 [ACTION_KEXEC] = SPECIAL_KEXEC_TARGET,
1638 [ACTION_RUNLEVEL2] = SPECIAL_RUNLEVEL2_TARGET,
1639 [ACTION_RUNLEVEL3] = SPECIAL_RUNLEVEL3_TARGET,
1640 [ACTION_RUNLEVEL4] = SPECIAL_RUNLEVEL4_TARGET,
1641 [ACTION_RUNLEVEL5] = SPECIAL_RUNLEVEL5_TARGET,
1642 [ACTION_RESCUE] = SPECIAL_RESCUE_TARGET,
1643 [ACTION_EMERGENCY] = SPECIAL_EMERGENCY_TARGET,
1644 [ACTION_DEFAULT] = SPECIAL_DEFAULT_TARGET,
1645 [ACTION_EXIT] = SPECIAL_EXIT_TARGET,
1646 [ACTION_SUSPEND] = SPECIAL_SUSPEND_TARGET,
1647 [ACTION_HIBERNATE] = SPECIAL_HIBERNATE_TARGET,
1648 [ACTION_HYBRID_SLEEP] = SPECIAL_HYBRID_SLEEP_TARGET
1649 };
1650
1651 int r, ret = 0;
1652 const char *method, *mode, *one_name;
1653 Set *s = NULL;
1654 DBusError error;
1655 char **name;
1656
1657 dbus_error_init(&error);
1658
1659 assert(bus);
1660
1661 ask_password_agent_open_if_enabled();
1662
1663 if (arg_action == ACTION_SYSTEMCTL) {
1664 method =
1665 streq(args[0], "stop") ||
1666 streq(args[0], "condstop") ? "StopUnit" :
1667 streq(args[0], "reload") ? "ReloadUnit" :
1668 streq(args[0], "restart") ? "RestartUnit" :
1669
1670 streq(args[0], "try-restart") ||
1671 streq(args[0], "condrestart") ? "TryRestartUnit" :
1672
1673 streq(args[0], "reload-or-restart") ? "ReloadOrRestartUnit" :
1674
1675 streq(args[0], "reload-or-try-restart") ||
1676 streq(args[0], "condreload") ||
1677
1678 streq(args[0], "force-reload") ? "ReloadOrTryRestartUnit" :
1679 "StartUnit";
1680
1681 mode =
1682 (streq(args[0], "isolate") ||
1683 streq(args[0], "rescue") ||
1684 streq(args[0], "emergency")) ? "isolate" : arg_job_mode;
1685
1686 one_name = table[verb_to_action(args[0])];
1687
1688 } else {
1689 assert(arg_action < ELEMENTSOF(table));
1690 assert(table[arg_action]);
1691
1692 method = "StartUnit";
1693
1694 mode = (arg_action == ACTION_EMERGENCY ||
1695 arg_action == ACTION_RESCUE ||
1696 arg_action == ACTION_RUNLEVEL2 ||
1697 arg_action == ACTION_RUNLEVEL3 ||
1698 arg_action == ACTION_RUNLEVEL4 ||
1699 arg_action == ACTION_RUNLEVEL5) ? "isolate" : "replace";
1700
1701 one_name = table[arg_action];
1702 }
1703
1704 if (!arg_no_block) {
1705 ret = enable_wait_for_jobs(bus);
1706 if (ret < 0) {
1707 log_error("Could not watch jobs: %s", strerror(-ret));
1708 goto finish;
1709 }
1710
1711 s = set_new(string_hash_func, string_compare_func);
1712 if (!s) {
1713 ret = log_oom();
1714 goto finish;
1715 }
1716 }
1717
1718 if (one_name) {
1719 ret = start_unit_one(bus, method, one_name, mode, &error, s);
1720 if (ret < 0)
1721 ret = translate_bus_error_to_exit_status(ret, &error);
1722 } else {
1723 STRV_FOREACH(name, args+1) {
1724 r = start_unit_one(bus, method, *name, mode, &error, s);
1725 if (r < 0) {
1726 ret = translate_bus_error_to_exit_status(r, &error);
1727 dbus_error_free(&error);
1728 }
1729 }
1730 }
1731
1732 if (!arg_no_block) {
1733 r = wait_for_jobs(bus, s);
1734 if (r < 0) {
1735 ret = r;
1736 goto finish;
1737 }
1738
1739 /* When stopping units, warn if they can still be triggered by
1740 * another active unit (socket, path, timer) */
1741 if (!arg_quiet && streq(method, "StopUnit")) {
1742 if (one_name)
1743 check_triggering_units(bus, one_name);
1744 else
1745 STRV_FOREACH(name, args+1)
1746 check_triggering_units(bus, *name);
1747 }
1748 }
1749
1750 finish:
1751 set_free_free(s);
1752 dbus_error_free(&error);
1753
1754 return ret;
1755 }
1756
1757 /* Ask systemd-logind, which might grant access to unprivileged users
1758 * through PolicyKit */
1759 static int reboot_with_logind(DBusConnection *bus, enum action a) {
1760 #ifdef HAVE_LOGIND
1761 const char *method;
1762 dbus_bool_t interactive = true;
1763
1764 polkit_agent_open_if_enabled();
1765
1766 switch (a) {
1767
1768 case ACTION_REBOOT:
1769 method = "Reboot";
1770 break;
1771
1772 case ACTION_POWEROFF:
1773 method = "PowerOff";
1774 break;
1775
1776 case ACTION_SUSPEND:
1777 method = "Suspend";
1778 break;
1779
1780 case ACTION_HIBERNATE:
1781 method = "Hibernate";
1782 break;
1783
1784 case ACTION_HYBRID_SLEEP:
1785 method = "HybridSleep";
1786 break;
1787
1788 default:
1789 return -EINVAL;
1790 }
1791
1792 return bus_method_call_with_reply (
1793 bus,
1794 "org.freedesktop.login1",
1795 "/org/freedesktop/login1",
1796 "org.freedesktop.login1.Manager",
1797 method,
1798 NULL,
1799 NULL,
1800 DBUS_TYPE_BOOLEAN, &interactive,
1801 DBUS_TYPE_INVALID);
1802 #else
1803 return -ENOSYS;
1804 #endif
1805 }
1806
1807 static int start_special(DBusConnection *bus, char **args) {
1808 enum action a;
1809 int r;
1810
1811 assert(args);
1812
1813 a = verb_to_action(args[0]);
1814
1815 if (arg_force >= 2 && geteuid() != 0) {
1816 log_error("Must be root.");
1817 return -EPERM;
1818 }
1819
1820 if (arg_force >= 2 &&
1821 (a == ACTION_HALT ||
1822 a == ACTION_POWEROFF ||
1823 a == ACTION_REBOOT))
1824 halt_now(a);
1825
1826 if (arg_force >= 1 &&
1827 (a == ACTION_HALT ||
1828 a == ACTION_POWEROFF ||
1829 a == ACTION_REBOOT ||
1830 a == ACTION_KEXEC ||
1831 a == ACTION_EXIT))
1832 return daemon_reload(bus, args);
1833
1834 /* first try logind, to allow authentication with polkit */
1835 if (geteuid() != 0 &&
1836 (a == ACTION_POWEROFF ||
1837 a == ACTION_REBOOT ||
1838 a == ACTION_SUSPEND ||
1839 a == ACTION_HIBERNATE ||
1840 a == ACTION_HYBRID_SLEEP)) {
1841 r = reboot_with_logind(bus, a);
1842 if (r >= 0)
1843 return r;
1844 }
1845
1846 r = start_unit(bus, args);
1847 if (r >= 0)
1848 warn_wall(a);
1849
1850 return r;
1851 }
1852
1853 static int check_unit_active(DBusConnection *bus, char **args) {
1854 char **name;
1855 int r = 3; /* According to LSB: "program is not running" */
1856
1857 assert(bus);
1858 assert(args);
1859
1860 STRV_FOREACH(name, args+1) {
1861 char **check_states = strv_new("active", "reloading", NULL);
1862 int state = check_one_unit(bus, *name, check_states, arg_quiet);
1863 strv_free(check_states);
1864 if (state < 0)
1865 return state;
1866 if (state == 0)
1867 r = 0;
1868 }
1869
1870 return r;
1871 }
1872
1873 static int check_unit_failed(DBusConnection *bus, char **args) {
1874 char **name;
1875 int r = 1;
1876
1877 assert(bus);
1878 assert(args);
1879
1880 STRV_FOREACH(name, args+1) {
1881 char **check_states = strv_new("failed", NULL);
1882 int state = check_one_unit(bus, *name, check_states, arg_quiet);
1883 strv_free(check_states);
1884 if (state < 0)
1885 return state;
1886 if (state == 0)
1887 r = 0;
1888 }
1889
1890 return r;
1891 }
1892
1893 static int kill_unit(DBusConnection *bus, char **args) {
1894 int r = 0;
1895 char **name, *n;
1896
1897 assert(args);
1898
1899 if (!arg_kill_who)
1900 arg_kill_who = "all";
1901
1902 STRV_FOREACH(name, args+1) {
1903 n = unit_name_mangle(*name);
1904 r = bus_method_call_with_reply (
1905 bus,
1906 "org.freedesktop.systemd1",
1907 "/org/freedesktop/systemd1",
1908 "org.freedesktop.systemd1.Manager",
1909 "KillUnit",
1910 NULL,
1911 NULL,
1912 DBUS_TYPE_STRING, n ? &n : name,
1913 DBUS_TYPE_STRING, &arg_kill_who,
1914 DBUS_TYPE_INT32, &arg_signal,
1915 DBUS_TYPE_INVALID);
1916 free(n);
1917 if (r)
1918 return r;
1919 }
1920 return 0;
1921 }
1922
1923 typedef struct ExecStatusInfo {
1924 char *name;
1925
1926 char *path;
1927 char **argv;
1928
1929 bool ignore;
1930
1931 usec_t start_timestamp;
1932 usec_t exit_timestamp;
1933 pid_t pid;
1934 int code;
1935 int status;
1936
1937 LIST_FIELDS(struct ExecStatusInfo, exec);
1938 } ExecStatusInfo;
1939
1940 static void exec_status_info_free(ExecStatusInfo *i) {
1941 assert(i);
1942
1943 free(i->name);
1944 free(i->path);
1945 strv_free(i->argv);
1946 free(i);
1947 }
1948
1949 static int exec_status_info_deserialize(DBusMessageIter *sub, ExecStatusInfo *i) {
1950 uint64_t start_timestamp, exit_timestamp, start_timestamp_monotonic, exit_timestamp_monotonic;
1951 DBusMessageIter sub2, sub3;
1952 const char*path;
1953 unsigned n;
1954 uint32_t pid;
1955 int32_t code, status;
1956 dbus_bool_t ignore;
1957
1958 assert(i);
1959 assert(i);
1960
1961 if (dbus_message_iter_get_arg_type(sub) != DBUS_TYPE_STRUCT)
1962 return -EIO;
1963
1964 dbus_message_iter_recurse(sub, &sub2);
1965
1966 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, true) < 0)
1967 return -EIO;
1968
1969 if (!(i->path = strdup(path)))
1970 return -ENOMEM;
1971
1972 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_ARRAY ||
1973 dbus_message_iter_get_element_type(&sub2) != DBUS_TYPE_STRING)
1974 return -EIO;
1975
1976 n = 0;
1977 dbus_message_iter_recurse(&sub2, &sub3);
1978 while (dbus_message_iter_get_arg_type(&sub3) != DBUS_TYPE_INVALID) {
1979 assert(dbus_message_iter_get_arg_type(&sub3) == DBUS_TYPE_STRING);
1980 dbus_message_iter_next(&sub3);
1981 n++;
1982 }
1983
1984
1985 if (!(i->argv = new0(char*, n+1)))
1986 return -ENOMEM;
1987
1988 n = 0;
1989 dbus_message_iter_recurse(&sub2, &sub3);
1990 while (dbus_message_iter_get_arg_type(&sub3) != DBUS_TYPE_INVALID) {
1991 const char *s;
1992
1993 assert(dbus_message_iter_get_arg_type(&sub3) == DBUS_TYPE_STRING);
1994 dbus_message_iter_get_basic(&sub3, &s);
1995 dbus_message_iter_next(&sub3);
1996
1997 if (!(i->argv[n++] = strdup(s)))
1998 return -ENOMEM;
1999 }
2000
2001 if (!dbus_message_iter_next(&sub2) ||
2002 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_BOOLEAN, &ignore, true) < 0 ||
2003 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &start_timestamp, true) < 0 ||
2004 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &start_timestamp_monotonic, true) < 0 ||
2005 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &exit_timestamp, true) < 0 ||
2006 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &exit_timestamp_monotonic, true) < 0 ||
2007 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &pid, true) < 0 ||
2008 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_INT32, &code, true) < 0 ||
2009 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_INT32, &status, false) < 0)
2010 return -EIO;
2011
2012 i->ignore = ignore;
2013 i->start_timestamp = (usec_t) start_timestamp;
2014 i->exit_timestamp = (usec_t) exit_timestamp;
2015 i->pid = (pid_t) pid;
2016 i->code = code;
2017 i->status = status;
2018
2019 return 0;
2020 }
2021
2022 typedef struct UnitStatusInfo {
2023 const char *id;
2024 const char *load_state;
2025 const char *active_state;
2026 const char *sub_state;
2027 const char *unit_file_state;
2028
2029 const char *description;
2030 const char *following;
2031
2032 char **documentation;
2033
2034 const char *fragment_path;
2035 const char *source_path;
2036 const char *default_control_group;
2037
2038 const char *load_error;
2039 const char *result;
2040
2041 usec_t inactive_exit_timestamp;
2042 usec_t inactive_exit_timestamp_monotonic;
2043 usec_t active_enter_timestamp;
2044 usec_t active_exit_timestamp;
2045 usec_t inactive_enter_timestamp;
2046
2047 bool need_daemon_reload;
2048
2049 /* Service */
2050 pid_t main_pid;
2051 pid_t control_pid;
2052 const char *status_text;
2053 bool running:1;
2054
2055 usec_t start_timestamp;
2056 usec_t exit_timestamp;
2057
2058 int exit_code, exit_status;
2059
2060 usec_t condition_timestamp;
2061 bool condition_result;
2062
2063 /* Socket */
2064 unsigned n_accepted;
2065 unsigned n_connections;
2066 bool accept;
2067
2068 /* Device */
2069 const char *sysfs_path;
2070
2071 /* Mount, Automount */
2072 const char *where;
2073
2074 /* Swap */
2075 const char *what;
2076
2077 LIST_HEAD(ExecStatusInfo, exec);
2078 } UnitStatusInfo;
2079
2080 static void print_status_info(UnitStatusInfo *i) {
2081 ExecStatusInfo *p;
2082 const char *on, *off, *ss;
2083 usec_t timestamp;
2084 char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], *s1;
2085 char since2[FORMAT_TIMESTAMP_MAX], *s2;
2086 const char *path;
2087
2088 assert(i);
2089
2090 /* This shows pretty information about a unit. See
2091 * print_property() for a low-level property printer */
2092
2093 printf("%s", strna(i->id));
2094
2095 if (i->description && !streq_ptr(i->id, i->description))
2096 printf(" - %s", i->description);
2097
2098 printf("\n");
2099
2100 if (i->following)
2101 printf("\t Follow: unit currently follows state of %s\n", i->following);
2102
2103 if (streq_ptr(i->load_state, "error")) {
2104 on = ansi_highlight_red(true);
2105 off = ansi_highlight_red(false);
2106 } else
2107 on = off = "";
2108
2109 path = i->source_path ? i->source_path : i->fragment_path;
2110
2111 if (i->load_error)
2112 printf("\t Loaded: %s%s%s (Reason: %s)\n", on, strna(i->load_state), off, i->load_error);
2113 else if (path && i->unit_file_state)
2114 printf("\t Loaded: %s%s%s (%s; %s)\n", on, strna(i->load_state), off, path, i->unit_file_state);
2115 else if (path)
2116 printf("\t Loaded: %s%s%s (%s)\n", on, strna(i->load_state), off, path);
2117 else
2118 printf("\t Loaded: %s%s%s\n", on, strna(i->load_state), off);
2119
2120 ss = streq_ptr(i->active_state, i->sub_state) ? NULL : i->sub_state;
2121
2122 if (streq_ptr(i->active_state, "failed")) {
2123 on = ansi_highlight_red(true);
2124 off = ansi_highlight_red(false);
2125 } else if (streq_ptr(i->active_state, "active") || streq_ptr(i->active_state, "reloading")) {
2126 on = ansi_highlight_green(true);
2127 off = ansi_highlight_green(false);
2128 } else
2129 on = off = "";
2130
2131 if (ss)
2132 printf("\t Active: %s%s (%s)%s",
2133 on,
2134 strna(i->active_state),
2135 ss,
2136 off);
2137 else
2138 printf("\t Active: %s%s%s",
2139 on,
2140 strna(i->active_state),
2141 off);
2142
2143 if (!isempty(i->result) && !streq(i->result, "success"))
2144 printf(" (Result: %s)", i->result);
2145
2146 timestamp = (streq_ptr(i->active_state, "active") ||
2147 streq_ptr(i->active_state, "reloading")) ? i->active_enter_timestamp :
2148 (streq_ptr(i->active_state, "inactive") ||
2149 streq_ptr(i->active_state, "failed")) ? i->inactive_enter_timestamp :
2150 streq_ptr(i->active_state, "activating") ? i->inactive_exit_timestamp :
2151 i->active_exit_timestamp;
2152
2153 s1 = format_timestamp_relative(since1, sizeof(since1), timestamp);
2154 s2 = format_timestamp(since2, sizeof(since2), timestamp);
2155
2156 if (s1)
2157 printf(" since %s; %s\n", s2, s1);
2158 else if (s2)
2159 printf(" since %s\n", s2);
2160 else
2161 printf("\n");
2162
2163 if (!i->condition_result && i->condition_timestamp > 0) {
2164 s1 = format_timestamp_relative(since1, sizeof(since1), i->condition_timestamp);
2165 s2 = format_timestamp(since2, sizeof(since2), i->condition_timestamp);
2166
2167 if (s1)
2168 printf("\t start condition failed at %s; %s\n", s2, s1);
2169 else if (s2)
2170 printf("\t start condition failed at %s\n", s2);
2171 }
2172
2173 if (i->sysfs_path)
2174 printf("\t Device: %s\n", i->sysfs_path);
2175 if (i->where)
2176 printf("\t Where: %s\n", i->where);
2177 if (i->what)
2178 printf("\t What: %s\n", i->what);
2179
2180 if (!strv_isempty(i->documentation)) {
2181 char **t;
2182 bool first = true;
2183
2184 STRV_FOREACH(t, i->documentation) {
2185 if (first) {
2186 printf("\t Docs: %s\n", *t);
2187 first = false;
2188 } else
2189 printf("\t %s\n", *t);
2190 }
2191 }
2192
2193 if (i->accept)
2194 printf("\tAccepted: %u; Connected: %u\n", i->n_accepted, i->n_connections);
2195
2196 LIST_FOREACH(exec, p, i->exec) {
2197 char *t;
2198 bool good;
2199
2200 /* Only show exited processes here */
2201 if (p->code == 0)
2202 continue;
2203
2204 t = strv_join(p->argv, " ");
2205 printf("\t Process: %u %s=%s ", p->pid, p->name, strna(t));
2206 free(t);
2207
2208 good = is_clean_exit_lsb(p->code, p->status, NULL);
2209 if (!good) {
2210 on = ansi_highlight_red(true);
2211 off = ansi_highlight_red(false);
2212 } else
2213 on = off = "";
2214
2215 printf("%s(code=%s, ", on, sigchld_code_to_string(p->code));
2216
2217 if (p->code == CLD_EXITED) {
2218 const char *c;
2219
2220 printf("status=%i", p->status);
2221
2222 c = exit_status_to_string(p->status, EXIT_STATUS_SYSTEMD);
2223 if (c)
2224 printf("/%s", c);
2225
2226 } else
2227 printf("signal=%s", signal_to_string(p->status));
2228
2229 printf(")%s\n", off);
2230
2231 if (i->main_pid == p->pid &&
2232 i->start_timestamp == p->start_timestamp &&
2233 i->exit_timestamp == p->start_timestamp)
2234 /* Let's not show this twice */
2235 i->main_pid = 0;
2236
2237 if (p->pid == i->control_pid)
2238 i->control_pid = 0;
2239 }
2240
2241 if (i->main_pid > 0 || i->control_pid > 0) {
2242 printf("\t");
2243
2244 if (i->main_pid > 0) {
2245 printf("Main PID: %u", (unsigned) i->main_pid);
2246
2247 if (i->running) {
2248 char *t = NULL;
2249 get_process_comm(i->main_pid, &t);
2250 if (t) {
2251 printf(" (%s)", t);
2252 free(t);
2253 }
2254 } else if (i->exit_code > 0) {
2255 printf(" (code=%s, ", sigchld_code_to_string(i->exit_code));
2256
2257 if (i->exit_code == CLD_EXITED) {
2258 const char *c;
2259
2260 printf("status=%i", i->exit_status);
2261
2262 c = exit_status_to_string(i->exit_status, EXIT_STATUS_SYSTEMD);
2263 if (c)
2264 printf("/%s", c);
2265
2266 } else
2267 printf("signal=%s", signal_to_string(i->exit_status));
2268 printf(")");
2269 }
2270 }
2271
2272 if (i->main_pid > 0 && i->control_pid > 0)
2273 printf(";");
2274
2275 if (i->control_pid > 0) {
2276 char *t = NULL;
2277
2278 printf(" Control: %u", (unsigned) i->control_pid);
2279
2280 get_process_comm(i->control_pid, &t);
2281 if (t) {
2282 printf(" (%s)", t);
2283 free(t);
2284 }
2285 }
2286
2287 printf("\n");
2288 }
2289
2290 if (i->status_text)
2291 printf("\t Status: \"%s\"\n", i->status_text);
2292
2293 if (i->default_control_group &&
2294 (i->main_pid > 0 || i->control_pid > 0 || cg_is_empty_by_spec(i->default_control_group, false) == 0)) {
2295 unsigned c;
2296
2297 printf("\t CGroup: %s\n", i->default_control_group);
2298
2299 if (arg_transport != TRANSPORT_SSH) {
2300 unsigned k = 0;
2301 pid_t extra[2];
2302
2303 c = columns();
2304 if (c > 18)
2305 c -= 18;
2306 else
2307 c = 0;
2308
2309 if (i->main_pid > 0)
2310 extra[k++] = i->main_pid;
2311
2312 if (i->control_pid > 0)
2313 extra[k++] = i->control_pid;
2314
2315 show_cgroup_and_extra_by_spec(i->default_control_group, "\t\t ", c, false, arg_all, extra, k);
2316 }
2317 }
2318
2319 if (i->id && arg_transport != TRANSPORT_SSH) {
2320 int flags =
2321 arg_all * OUTPUT_SHOW_ALL |
2322 (!on_tty() || pager_have()) * OUTPUT_FULL_WIDTH |
2323 on_tty() * OUTPUT_COLOR |
2324 !arg_quiet * OUTPUT_WARN_CUTOFF;
2325
2326 printf("\n");
2327 show_journal_by_unit(stdout,
2328 i->id,
2329 arg_output,
2330 0,
2331 i->inactive_exit_timestamp_monotonic,
2332 arg_lines,
2333 flags);
2334 }
2335
2336 if (i->need_daemon_reload)
2337 printf("\n%sWarning:%s Unit file changed on disk, 'systemctl %s daemon-reload' recommended.\n",
2338 ansi_highlight_red(true),
2339 ansi_highlight_red(false),
2340 arg_scope == UNIT_FILE_SYSTEM ? "--system" : "--user");
2341 }
2342
2343 static void show_unit_help(UnitStatusInfo *i) {
2344 char **p;
2345
2346 assert(i);
2347
2348 if (!i->documentation) {
2349 log_info("Documentation for %s not known.", i->id);
2350 return;
2351 }
2352
2353 STRV_FOREACH(p, i->documentation) {
2354
2355 if (startswith(*p, "man:")) {
2356 size_t k;
2357 char *e = NULL;
2358 char *page = NULL, *section = NULL;
2359 const char *args[4] = { "man", NULL, NULL, NULL };
2360 pid_t pid;
2361
2362 k = strlen(*p);
2363
2364 if ((*p)[k-1] == ')')
2365 e = strrchr(*p, '(');
2366
2367 if (e) {
2368 page = strndup((*p) + 4, e - *p - 4);
2369 if (!page) {
2370 log_oom();
2371 return;
2372 }
2373
2374 section = strndup(e + 1, *p + k - e - 2);
2375 if (!section) {
2376 free(page);
2377 log_oom();
2378 return;
2379 }
2380
2381 args[1] = section;
2382 args[2] = page;
2383 } else
2384 args[1] = *p + 4;
2385
2386 pid = fork();
2387 if (pid < 0) {
2388 log_error("Failed to fork: %m");
2389 free(page);
2390 free(section);
2391 continue;
2392 }
2393
2394 if (pid == 0) {
2395 /* Child */
2396 execvp(args[0], (char**) args);
2397 log_error("Failed to execute man: %m");
2398 _exit(EXIT_FAILURE);
2399 }
2400
2401 free(page);
2402 free(section);
2403
2404 wait_for_terminate(pid, NULL);
2405 } else
2406 log_info("Can't show: %s", *p);
2407 }
2408 }
2409
2410 static int status_property(const char *name, DBusMessageIter *iter, UnitStatusInfo *i) {
2411
2412 assert(name);
2413 assert(iter);
2414 assert(i);
2415
2416 switch (dbus_message_iter_get_arg_type(iter)) {
2417
2418 case DBUS_TYPE_STRING: {
2419 const char *s;
2420
2421 dbus_message_iter_get_basic(iter, &s);
2422
2423 if (!isempty(s)) {
2424 if (streq(name, "Id"))
2425 i->id = s;
2426 else if (streq(name, "LoadState"))
2427 i->load_state = s;
2428 else if (streq(name, "ActiveState"))
2429 i->active_state = s;
2430 else if (streq(name, "SubState"))
2431 i->sub_state = s;
2432 else if (streq(name, "Description"))
2433 i->description = s;
2434 else if (streq(name, "FragmentPath"))
2435 i->fragment_path = s;
2436 else if (streq(name, "SourcePath"))
2437 i->source_path = s;
2438 else if (streq(name, "DefaultControlGroup"))
2439 i->default_control_group = s;
2440 else if (streq(name, "StatusText"))
2441 i->status_text = s;
2442 else if (streq(name, "SysFSPath"))
2443 i->sysfs_path = s;
2444 else if (streq(name, "Where"))
2445 i->where = s;
2446 else if (streq(name, "What"))
2447 i->what = s;
2448 else if (streq(name, "Following"))
2449 i->following = s;
2450 else if (streq(name, "UnitFileState"))
2451 i->unit_file_state = s;
2452 else if (streq(name, "Result"))
2453 i->result = s;
2454 }
2455
2456 break;
2457 }
2458
2459 case DBUS_TYPE_BOOLEAN: {
2460 dbus_bool_t b;
2461
2462 dbus_message_iter_get_basic(iter, &b);
2463
2464 if (streq(name, "Accept"))
2465 i->accept = b;
2466 else if (streq(name, "NeedDaemonReload"))
2467 i->need_daemon_reload = b;
2468 else if (streq(name, "ConditionResult"))
2469 i->condition_result = b;
2470
2471 break;
2472 }
2473
2474 case DBUS_TYPE_UINT32: {
2475 uint32_t u;
2476
2477 dbus_message_iter_get_basic(iter, &u);
2478
2479 if (streq(name, "MainPID")) {
2480 if (u > 0) {
2481 i->main_pid = (pid_t) u;
2482 i->running = true;
2483 }
2484 } else if (streq(name, "ControlPID"))
2485 i->control_pid = (pid_t) u;
2486 else if (streq(name, "ExecMainPID")) {
2487 if (u > 0)
2488 i->main_pid = (pid_t) u;
2489 } else if (streq(name, "NAccepted"))
2490 i->n_accepted = u;
2491 else if (streq(name, "NConnections"))
2492 i->n_connections = u;
2493
2494 break;
2495 }
2496
2497 case DBUS_TYPE_INT32: {
2498 int32_t j;
2499
2500 dbus_message_iter_get_basic(iter, &j);
2501
2502 if (streq(name, "ExecMainCode"))
2503 i->exit_code = (int) j;
2504 else if (streq(name, "ExecMainStatus"))
2505 i->exit_status = (int) j;
2506
2507 break;
2508 }
2509
2510 case DBUS_TYPE_UINT64: {
2511 uint64_t u;
2512
2513 dbus_message_iter_get_basic(iter, &u);
2514
2515 if (streq(name, "ExecMainStartTimestamp"))
2516 i->start_timestamp = (usec_t) u;
2517 else if (streq(name, "ExecMainExitTimestamp"))
2518 i->exit_timestamp = (usec_t) u;
2519 else if (streq(name, "ActiveEnterTimestamp"))
2520 i->active_enter_timestamp = (usec_t) u;
2521 else if (streq(name, "InactiveEnterTimestamp"))
2522 i->inactive_enter_timestamp = (usec_t) u;
2523 else if (streq(name, "InactiveExitTimestamp"))
2524 i->inactive_exit_timestamp = (usec_t) u;
2525 else if (streq(name, "InactiveExitTimestampMonotonic"))
2526 i->inactive_exit_timestamp_monotonic = (usec_t) u;
2527 else if (streq(name, "ActiveExitTimestamp"))
2528 i->active_exit_timestamp = (usec_t) u;
2529 else if (streq(name, "ConditionTimestamp"))
2530 i->condition_timestamp = (usec_t) u;
2531
2532 break;
2533 }
2534
2535 case DBUS_TYPE_ARRAY: {
2536
2537 if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT &&
2538 startswith(name, "Exec")) {
2539 DBusMessageIter sub;
2540
2541 dbus_message_iter_recurse(iter, &sub);
2542 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2543 ExecStatusInfo *info;
2544 int r;
2545
2546 if (!(info = new0(ExecStatusInfo, 1)))
2547 return -ENOMEM;
2548
2549 if (!(info->name = strdup(name))) {
2550 free(info);
2551 return -ENOMEM;
2552 }
2553
2554 if ((r = exec_status_info_deserialize(&sub, info)) < 0) {
2555 free(info);
2556 return r;
2557 }
2558
2559 LIST_PREPEND(ExecStatusInfo, exec, i->exec, info);
2560
2561 dbus_message_iter_next(&sub);
2562 }
2563 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRING &&
2564 streq(name, "Documentation")) {
2565
2566 DBusMessageIter sub;
2567
2568 dbus_message_iter_recurse(iter, &sub);
2569 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING) {
2570 const char *s;
2571 char **l;
2572
2573 dbus_message_iter_get_basic(&sub, &s);
2574
2575 l = strv_append(i->documentation, s);
2576 if (!l)
2577 return -ENOMEM;
2578
2579 strv_free(i->documentation);
2580 i->documentation = l;
2581
2582 dbus_message_iter_next(&sub);
2583 }
2584 }
2585
2586 break;
2587 }
2588
2589 case DBUS_TYPE_STRUCT: {
2590
2591 if (streq(name, "LoadError")) {
2592 DBusMessageIter sub;
2593 const char *n, *message;
2594 int r;
2595
2596 dbus_message_iter_recurse(iter, &sub);
2597
2598 r = bus_iter_get_basic_and_next(&sub, DBUS_TYPE_STRING, &n, true);
2599 if (r < 0)
2600 return r;
2601
2602 r = bus_iter_get_basic_and_next(&sub, DBUS_TYPE_STRING, &message, false);
2603 if (r < 0)
2604 return r;
2605
2606 if (!isempty(message))
2607 i->load_error = message;
2608 }
2609
2610 break;
2611 }
2612 }
2613
2614 return 0;
2615 }
2616
2617 static int print_property(const char *name, DBusMessageIter *iter) {
2618 assert(name);
2619 assert(iter);
2620
2621 /* This is a low-level property printer, see
2622 * print_status_info() for the nicer output */
2623
2624 if (arg_property && !strv_find(arg_property, name))
2625 return 0;
2626
2627 switch (dbus_message_iter_get_arg_type(iter)) {
2628
2629 case DBUS_TYPE_STRUCT: {
2630 DBusMessageIter sub;
2631 dbus_message_iter_recurse(iter, &sub);
2632
2633 if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_UINT32 && streq(name, "Job")) {
2634 uint32_t u;
2635
2636 dbus_message_iter_get_basic(&sub, &u);
2637
2638 if (u)
2639 printf("%s=%u\n", name, (unsigned) u);
2640 else if (arg_all)
2641 printf("%s=\n", name);
2642
2643 return 0;
2644 } else if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING && streq(name, "Unit")) {
2645 const char *s;
2646
2647 dbus_message_iter_get_basic(&sub, &s);
2648
2649 if (arg_all || s[0])
2650 printf("%s=%s\n", name, s);
2651
2652 return 0;
2653 } else if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING && streq(name, "LoadError")) {
2654 const char *a = NULL, *b = NULL;
2655
2656 if (bus_iter_get_basic_and_next(&sub, DBUS_TYPE_STRING, &a, true) >= 0)
2657 bus_iter_get_basic_and_next(&sub, DBUS_TYPE_STRING, &b, false);
2658
2659 if (arg_all || !isempty(a) || !isempty(b))
2660 printf("%s=%s \"%s\"\n", name, strempty(a), strempty(b));
2661
2662 return 0;
2663 }
2664
2665 break;
2666 }
2667
2668 case DBUS_TYPE_ARRAY:
2669
2670 if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "EnvironmentFiles")) {
2671 DBusMessageIter sub, sub2;
2672
2673 dbus_message_iter_recurse(iter, &sub);
2674 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2675 const char *path;
2676 dbus_bool_t ignore;
2677
2678 dbus_message_iter_recurse(&sub, &sub2);
2679
2680 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, true) >= 0 &&
2681 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_BOOLEAN, &ignore, false) >= 0)
2682 printf("EnvironmentFile=%s (ignore_errors=%s)\n", path, yes_no(ignore));
2683
2684 dbus_message_iter_next(&sub);
2685 }
2686
2687 return 0;
2688
2689 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Paths")) {
2690 DBusMessageIter sub, sub2;
2691
2692 dbus_message_iter_recurse(iter, &sub);
2693 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2694 const char *type, *path;
2695
2696 dbus_message_iter_recurse(&sub, &sub2);
2697
2698 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) >= 0 &&
2699 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, false) >= 0)
2700 printf("%s=%s\n", type, path);
2701
2702 dbus_message_iter_next(&sub);
2703 }
2704
2705 return 0;
2706
2707 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Timers")) {
2708 DBusMessageIter sub, sub2;
2709
2710 dbus_message_iter_recurse(iter, &sub);
2711 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2712 const char *base;
2713 uint64_t value, next_elapse;
2714
2715 dbus_message_iter_recurse(&sub, &sub2);
2716
2717 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &base, true) >= 0 &&
2718 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &value, true) >= 0 &&
2719 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &next_elapse, false) >= 0) {
2720 char timespan1[FORMAT_TIMESPAN_MAX], timespan2[FORMAT_TIMESPAN_MAX];
2721
2722 printf("%s={ value=%s ; next_elapse=%s }\n",
2723 base,
2724 format_timespan(timespan1, sizeof(timespan1), value),
2725 format_timespan(timespan2, sizeof(timespan2), next_elapse));
2726 }
2727
2728 dbus_message_iter_next(&sub);
2729 }
2730
2731 return 0;
2732
2733 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "ControlGroupAttributes")) {
2734 DBusMessageIter sub, sub2;
2735
2736 dbus_message_iter_recurse(iter, &sub);
2737 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2738 const char *controller, *attr, *value;
2739
2740 dbus_message_iter_recurse(&sub, &sub2);
2741
2742 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &controller, true) >= 0 &&
2743 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &attr, true) >= 0 &&
2744 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &value, false) >= 0) {
2745
2746 printf("ControlGroupAttribute={ controller=%s ; attribute=%s ; value=\"%s\" }\n",
2747 controller,
2748 attr,
2749 value);
2750 }
2751
2752 dbus_message_iter_next(&sub);
2753 }
2754
2755 return 0;
2756
2757 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && startswith(name, "Exec")) {
2758 DBusMessageIter sub;
2759
2760 dbus_message_iter_recurse(iter, &sub);
2761 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2762 ExecStatusInfo info;
2763
2764 zero(info);
2765 if (exec_status_info_deserialize(&sub, &info) >= 0) {
2766 char timestamp1[FORMAT_TIMESTAMP_MAX], timestamp2[FORMAT_TIMESTAMP_MAX];
2767 char *t;
2768
2769 t = strv_join(info.argv, " ");
2770
2771 printf("%s={ path=%s ; argv[]=%s ; ignore_errors=%s ; start_time=[%s] ; stop_time=[%s] ; pid=%u ; code=%s ; status=%i%s%s }\n",
2772 name,
2773 strna(info.path),
2774 strna(t),
2775 yes_no(info.ignore),
2776 strna(format_timestamp(timestamp1, sizeof(timestamp1), info.start_timestamp)),
2777 strna(format_timestamp(timestamp2, sizeof(timestamp2), info.exit_timestamp)),
2778 (unsigned) info. pid,
2779 sigchld_code_to_string(info.code),
2780 info.status,
2781 info.code == CLD_EXITED ? "" : "/",
2782 strempty(info.code == CLD_EXITED ? NULL : signal_to_string(info.status)));
2783
2784 free(t);
2785 }
2786
2787 free(info.path);
2788 strv_free(info.argv);
2789
2790 dbus_message_iter_next(&sub);
2791 }
2792
2793 return 0;
2794 }
2795
2796 break;
2797 }
2798
2799 if (generic_print_property(name, iter, arg_all) > 0)
2800 return 0;
2801
2802 if (arg_all)
2803 printf("%s=[unprintable]\n", name);
2804
2805 return 0;
2806 }
2807
2808 static int show_one(const char *verb, DBusConnection *bus, const char *path, bool show_properties, bool *new_line) {
2809 DBusMessage *reply = NULL;
2810 const char *interface = "";
2811 int r;
2812 DBusMessageIter iter, sub, sub2, sub3;
2813 UnitStatusInfo info;
2814 ExecStatusInfo *p;
2815
2816 assert(path);
2817 assert(new_line);
2818
2819 zero(info);
2820
2821 r = bus_method_call_with_reply (
2822 bus,
2823 "org.freedesktop.systemd1",
2824 path,
2825 "org.freedesktop.DBus.Properties",
2826 "GetAll",
2827 &reply,
2828 NULL,
2829 DBUS_TYPE_STRING, &interface,
2830 DBUS_TYPE_INVALID);
2831 if (r)
2832 goto finish;
2833
2834 if (!dbus_message_iter_init(reply, &iter) ||
2835 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
2836 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_DICT_ENTRY) {
2837 log_error("Failed to parse reply.");
2838 r = -EIO;
2839 goto finish;
2840 }
2841
2842 dbus_message_iter_recurse(&iter, &sub);
2843
2844 if (*new_line)
2845 printf("\n");
2846
2847 *new_line = true;
2848
2849 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
2850 const char *name;
2851
2852 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_DICT_ENTRY) {
2853 log_error("Failed to parse reply.");
2854 r = -EIO;
2855 goto finish;
2856 }
2857
2858 dbus_message_iter_recurse(&sub, &sub2);
2859
2860 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0) {
2861 log_error("Failed to parse reply.");
2862 r = -EIO;
2863 goto finish;
2864 }
2865
2866 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT) {
2867 log_error("Failed to parse reply.");
2868 r = -EIO;
2869 goto finish;
2870 }
2871
2872 dbus_message_iter_recurse(&sub2, &sub3);
2873
2874 if (show_properties)
2875 r = print_property(name, &sub3);
2876 else
2877 r = status_property(name, &sub3, &info);
2878
2879 if (r < 0) {
2880 log_error("Failed to parse reply.");
2881 r = -EIO;
2882 goto finish;
2883 }
2884
2885 dbus_message_iter_next(&sub);
2886 }
2887
2888 r = 0;
2889
2890 if (!show_properties) {
2891 if (streq(verb, "help"))
2892 show_unit_help(&info);
2893 else
2894 print_status_info(&info);
2895 }
2896
2897 strv_free(info.documentation);
2898
2899 if (!streq_ptr(info.active_state, "active") &&
2900 !streq_ptr(info.active_state, "reloading") &&
2901 streq(verb, "status"))
2902 /* According to LSB: "program not running" */
2903 r = 3;
2904
2905 while ((p = info.exec)) {
2906 LIST_REMOVE(ExecStatusInfo, exec, info.exec, p);
2907 exec_status_info_free(p);
2908 }
2909
2910 finish:
2911 if (reply)
2912 dbus_message_unref(reply);
2913
2914 return r;
2915 }
2916
2917 static int show_one_by_pid(const char *verb, DBusConnection *bus, uint32_t pid, bool *new_line) {
2918 DBusMessage *reply = NULL;
2919 const char *path = NULL;
2920 DBusError error;
2921 int r;
2922
2923 dbus_error_init(&error);
2924
2925 r = bus_method_call_with_reply (
2926 bus,
2927 "org.freedesktop.systemd1",
2928 "/org/freedesktop/systemd1",
2929 "org.freedesktop.systemd1.Manager",
2930 "GetUnitByPID",
2931 &reply,
2932 NULL,
2933 DBUS_TYPE_UINT32, &pid,
2934 DBUS_TYPE_INVALID);
2935 if (r)
2936 goto finish;
2937
2938 if (!dbus_message_get_args(reply, &error,
2939 DBUS_TYPE_OBJECT_PATH, &path,
2940 DBUS_TYPE_INVALID)) {
2941 log_error("Failed to parse reply: %s", bus_error_message(&error));
2942 r = -EIO;
2943 goto finish;
2944 }
2945
2946 r = show_one(verb, bus, path, false, new_line);
2947
2948 finish:
2949 if (reply)
2950 dbus_message_unref(reply);
2951
2952 dbus_error_free(&error);
2953
2954 return r;
2955 }
2956
2957 static int show(DBusConnection *bus, char **args) {
2958 int r, ret = 0;
2959 bool show_properties, new_line = false;
2960 char **name;
2961
2962 assert(bus);
2963 assert(args);
2964
2965 show_properties = streq(args[0], "show");
2966
2967 if (show_properties)
2968 pager_open_if_enabled();
2969
2970 if (show_properties && strv_length(args) <= 1) {
2971 /* If not argument is specified inspect the manager
2972 * itself */
2973
2974 return show_one(args[0], bus, "/org/freedesktop/systemd1", show_properties, &new_line);
2975 }
2976
2977 STRV_FOREACH(name, args+1) {
2978 uint32_t id;
2979
2980 if (safe_atou32(*name, &id) < 0) {
2981 char *p, *n;
2982 /* Interpret as unit name */
2983
2984 n = unit_name_mangle(*name);
2985 p = unit_dbus_path_from_name(n ? n : *name);
2986 free(n);
2987 if (!p)
2988 return log_oom();
2989
2990 r = show_one(args[0], bus, p, show_properties, &new_line);
2991 free(p);
2992
2993 if (r != 0)
2994 ret = r;
2995
2996 } else if (show_properties) {
2997
2998 /* Interpret as job id */
2999
3000 char *p;
3001 if (asprintf(&p, "/org/freedesktop/systemd1/job/%u", id) < 0)
3002 return log_oom();
3003
3004 r = show_one(args[0], bus, p, show_properties, &new_line);
3005 free(p);
3006
3007 if (r != 0)
3008 ret = r;
3009
3010 } else {
3011
3012 /* Interpret as PID */
3013
3014 r = show_one_by_pid(args[0], bus, id, &new_line);
3015 if (r != 0)
3016 ret = r;
3017 }
3018 }
3019
3020 return ret;
3021 }
3022
3023 static int dump(DBusConnection *bus, char **args) {
3024 DBusMessage *reply = NULL;
3025 DBusError error;
3026 int r;
3027 const char *text;
3028
3029 dbus_error_init(&error);
3030
3031 pager_open_if_enabled();
3032
3033 r = bus_method_call_with_reply (
3034 bus,
3035 "org.freedesktop.systemd1",
3036 "/org/freedesktop/systemd1",
3037 "org.freedesktop.systemd1.Manager",
3038 "Dump",
3039 &reply,
3040 NULL,
3041 DBUS_TYPE_INVALID);
3042 if (r)
3043 goto finish;
3044
3045 if (!dbus_message_get_args(reply, &error,
3046 DBUS_TYPE_STRING, &text,
3047 DBUS_TYPE_INVALID)) {
3048 log_error("Failed to parse reply: %s", bus_error_message(&error));
3049 r = -EIO;
3050 goto finish;
3051 }
3052
3053 fputs(text, stdout);
3054
3055 finish:
3056 if (reply)
3057 dbus_message_unref(reply);
3058
3059 dbus_error_free(&error);
3060
3061 return r;
3062 }
3063
3064 static int snapshot(DBusConnection *bus, char **args) {
3065 DBusMessage *reply = NULL;
3066 DBusError error;
3067 int r;
3068 dbus_bool_t cleanup = FALSE;
3069 DBusMessageIter iter, sub;
3070 const char
3071 *name = "", *path, *id,
3072 *interface = "org.freedesktop.systemd1.Unit",
3073 *property = "Id";
3074 char *n;
3075
3076 dbus_error_init(&error);
3077
3078 if (strv_length(args) > 1)
3079 name = args[1];
3080
3081 n = unit_name_mangle(name);
3082 r = bus_method_call_with_reply (
3083 bus,
3084 "org.freedesktop.systemd1",
3085 "/org/freedesktop/systemd1",
3086 "org.freedesktop.systemd1.Manager",
3087 "CreateSnapshot",
3088 &reply,
3089 NULL,
3090 DBUS_TYPE_STRING, n ? (const char**) &n : &name,
3091 DBUS_TYPE_BOOLEAN, &cleanup,
3092 DBUS_TYPE_INVALID);
3093 free(n);
3094 if (r)
3095 goto finish;
3096
3097 if (!dbus_message_get_args(reply, &error,
3098 DBUS_TYPE_OBJECT_PATH, &path,
3099 DBUS_TYPE_INVALID)) {
3100 log_error("Failed to parse reply: %s", bus_error_message(&error));
3101 r = -EIO;
3102 goto finish;
3103 }
3104
3105 dbus_message_unref(reply);
3106 r = bus_method_call_with_reply (
3107 bus,
3108 "org.freedesktop.systemd1",
3109 path,
3110 "org.freedesktop.DBus.Properties",
3111 "Get",
3112 &reply,
3113 NULL,
3114 DBUS_TYPE_STRING, &interface,
3115 DBUS_TYPE_STRING, &property,
3116 DBUS_TYPE_INVALID);
3117 if (r)
3118 goto finish;
3119
3120 if (!dbus_message_iter_init(reply, &iter) ||
3121 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
3122 log_error("Failed to parse reply.");
3123 r = -EIO;
3124 goto finish;
3125 }
3126
3127 dbus_message_iter_recurse(&iter, &sub);
3128
3129 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
3130 log_error("Failed to parse reply.");
3131 r = -EIO;
3132 goto finish;
3133 }
3134
3135 dbus_message_iter_get_basic(&sub, &id);
3136
3137 if (!arg_quiet)
3138 puts(id);
3139
3140 finish:
3141 if (reply)
3142 dbus_message_unref(reply);
3143
3144 dbus_error_free(&error);
3145
3146 return r;
3147 }
3148
3149 static int delete_snapshot(DBusConnection *bus, char **args) {
3150 DBusMessage *reply = NULL;
3151 int r = 0;
3152 DBusError error;
3153 char **name;
3154
3155 assert(args);
3156
3157 dbus_error_init(&error);
3158
3159 STRV_FOREACH(name, args+1) {
3160 const char *path = NULL;
3161 char *n;
3162
3163 n = unit_name_mangle(*name);
3164 r = bus_method_call_with_reply (
3165 bus,
3166 "org.freedesktop.systemd1",
3167 "/org/freedesktop/systemd1",
3168 "org.freedesktop.systemd1.Manager",
3169 "GetUnit",
3170 &reply,
3171 NULL,
3172 DBUS_TYPE_STRING, n ? &n : name,
3173 DBUS_TYPE_INVALID);
3174 free(n);
3175 if (r)
3176 goto finish;
3177
3178 if (!dbus_message_get_args(reply, &error,
3179 DBUS_TYPE_OBJECT_PATH, &path,
3180 DBUS_TYPE_INVALID)) {
3181 log_error("Failed to parse reply: %s", bus_error_message(&error));
3182 r = -EIO;
3183 dbus_message_unref(reply);
3184 dbus_error_free(&error);
3185 goto finish;
3186 }
3187 dbus_message_unref(reply);
3188
3189 r = bus_method_call_with_reply (
3190 bus,
3191 "org.freedesktop.systemd1",
3192 path,
3193 "org.freedesktop.systemd1.Snapshot",
3194 "Remove",
3195 NULL,
3196 NULL,
3197 DBUS_TYPE_INVALID);
3198 if (r)
3199 goto finish;
3200 }
3201
3202 finish:
3203 return r;
3204 }
3205
3206 static int daemon_reload(DBusConnection *bus, char **args) {
3207 int r;
3208 const char *method;
3209 DBusError error;
3210
3211 if (arg_action == ACTION_RELOAD)
3212 method = "Reload";
3213 else if (arg_action == ACTION_REEXEC)
3214 method = "Reexecute";
3215 else {
3216 assert(arg_action == ACTION_SYSTEMCTL);
3217
3218 method =
3219 streq(args[0], "clear-jobs") ||
3220 streq(args[0], "cancel") ? "ClearJobs" :
3221 streq(args[0], "daemon-reexec") ? "Reexecute" :
3222 streq(args[0], "reset-failed") ? "ResetFailed" :
3223 streq(args[0], "halt") ? "Halt" :
3224 streq(args[0], "poweroff") ? "PowerOff" :
3225 streq(args[0], "reboot") ? "Reboot" :
3226 streq(args[0], "kexec") ? "KExec" :
3227 streq(args[0], "exit") ? "Exit" :
3228 /* "daemon-reload" */ "Reload";
3229 }
3230
3231 r = bus_method_call_with_reply (
3232 bus,
3233 "org.freedesktop.systemd1",
3234 "/org/freedesktop/systemd1",
3235 "org.freedesktop.systemd1.Manager",
3236 method,
3237 NULL,
3238 &error,
3239 DBUS_TYPE_INVALID);
3240
3241 if (r == -ENOENT && arg_action != ACTION_SYSTEMCTL)
3242 /* There's always a fallback possible for
3243 * legacy actions. */
3244 r = -EADDRNOTAVAIL;
3245 else if (r == -ETIMEDOUT && streq(method, "Reexecute"))
3246 /* On reexecution, we expect a disconnect, not
3247 * a reply */
3248 r = 0;
3249 else if (r)
3250 log_error("Failed to issue method call: %s", bus_error_message(&error));
3251 dbus_error_free(&error);
3252
3253 return r;
3254 }
3255
3256 static int reset_failed(DBusConnection *bus, char **args) {
3257 int r = 0;
3258 char **name, *n;
3259
3260 if (strv_length(args) <= 1)
3261 return daemon_reload(bus, args);
3262
3263 STRV_FOREACH(name, args+1) {
3264 n = unit_name_mangle(*name);
3265 r = bus_method_call_with_reply (
3266 bus,
3267 "org.freedesktop.systemd1",
3268 "/org/freedesktop/systemd1",
3269 "org.freedesktop.systemd1.Manager",
3270 "ResetFailedUnit",
3271 NULL,
3272 NULL,
3273 DBUS_TYPE_STRING, n ? &n : name,
3274 DBUS_TYPE_INVALID);
3275 free(n);
3276 if (r)
3277 goto finish;
3278 }
3279
3280 finish:
3281 return r;
3282 }
3283
3284 static int show_enviroment(DBusConnection *bus, char **args) {
3285 DBusMessage *reply = NULL;
3286 DBusMessageIter iter, sub, sub2;
3287 int r;
3288 const char
3289 *interface = "org.freedesktop.systemd1.Manager",
3290 *property = "Environment";
3291
3292 pager_open_if_enabled();
3293
3294 r = bus_method_call_with_reply (
3295 bus,
3296 "org.freedesktop.systemd1",
3297 "/org/freedesktop/systemd1",
3298 "org.freedesktop.DBus.Properties",
3299 "Get",
3300 &reply,
3301 NULL,
3302 DBUS_TYPE_STRING, &interface,
3303 DBUS_TYPE_STRING, &property,
3304 DBUS_TYPE_INVALID);
3305 if (r)
3306 goto finish;
3307
3308 if (!dbus_message_iter_init(reply, &iter) ||
3309 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
3310 log_error("Failed to parse reply.");
3311 r = -EIO;
3312 goto finish;
3313 }
3314
3315 dbus_message_iter_recurse(&iter, &sub);
3316
3317 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_ARRAY ||
3318 dbus_message_iter_get_element_type(&sub) != DBUS_TYPE_STRING) {
3319 log_error("Failed to parse reply.");
3320 r = -EIO;
3321 goto finish;
3322 }
3323
3324 dbus_message_iter_recurse(&sub, &sub2);
3325
3326 while (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_INVALID) {
3327 const char *text;
3328
3329 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_STRING) {
3330 log_error("Failed to parse reply.");
3331 r = -EIO;
3332 goto finish;
3333 }
3334
3335 dbus_message_iter_get_basic(&sub2, &text);
3336 printf("%s\n", text);
3337
3338 dbus_message_iter_next(&sub2);
3339 }
3340
3341 r = 0;
3342
3343 finish:
3344 if (reply)
3345 dbus_message_unref(reply);
3346
3347 return r;
3348 }
3349
3350 static int switch_root(DBusConnection *bus, char **args) {
3351 unsigned l;
3352 const char *root;
3353 _cleanup_free_ char *init = NULL;
3354
3355 l = strv_length(args);
3356 if (l < 2 || l > 3) {
3357 log_error("Wrong number of arguments.");
3358 return -EINVAL;
3359 }
3360
3361 root = args[1];
3362
3363 if (l >= 3)
3364 init = strdup(args[2]);
3365 else {
3366 parse_env_file("/proc/cmdline", WHITESPACE,
3367 "init", &init,
3368 NULL);
3369
3370 if (!init)
3371 init = strdup("");
3372
3373 if (!init)
3374 return log_oom();
3375
3376 }
3377
3378 log_debug("switching root - root: %s; init: %s", root, init);
3379
3380 return bus_method_call_with_reply (
3381 bus,
3382 "org.freedesktop.systemd1",
3383 "/org/freedesktop/systemd1",
3384 "org.freedesktop.systemd1.Manager",
3385 "SwitchRoot",
3386 NULL,
3387 NULL,
3388 DBUS_TYPE_STRING, &root,
3389 DBUS_TYPE_STRING, &init,
3390 DBUS_TYPE_INVALID);
3391 }
3392
3393 static int set_environment(DBusConnection *bus, char **args) {
3394 _cleanup_dbus_message_unref_ DBusMessage *m = NULL, *reply = NULL;
3395 DBusError error;
3396 const char *method;
3397 DBusMessageIter iter;
3398 int r;
3399
3400 assert(bus);
3401
3402 dbus_error_init(&error);
3403
3404 method = streq(args[0], "set-environment")
3405 ? "SetEnvironment"
3406 : "UnsetEnvironment";
3407
3408 m = dbus_message_new_method_call(
3409 "org.freedesktop.systemd1",
3410 "/org/freedesktop/systemd1",
3411 "org.freedesktop.systemd1.Manager",
3412 method);
3413 if (!m)
3414 return log_oom();
3415
3416 dbus_message_iter_init_append(m, &iter);
3417
3418 r = bus_append_strv_iter(&iter, args + 1);
3419 if (r < 0)
3420 return log_oom();
3421
3422 reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
3423 if (!reply) {
3424 log_error("Failed to issue method call: %s", bus_error_message(&error));
3425 r = -EIO;
3426 goto finish;
3427 }
3428
3429 r = 0;
3430
3431 finish:
3432 dbus_error_free(&error);
3433 return r;
3434 }
3435
3436 static int enable_sysv_units(char **args) {
3437 int r = 0;
3438
3439 #if defined(HAVE_SYSV_COMPAT) && defined(HAVE_CHKCONFIG)
3440 const char *verb = args[0];
3441 unsigned f = 1, t = 1;
3442 LookupPaths paths;
3443
3444 if (arg_scope != UNIT_FILE_SYSTEM)
3445 return 0;
3446
3447 if (!streq(verb, "enable") &&
3448 !streq(verb, "disable") &&
3449 !streq(verb, "is-enabled"))
3450 return 0;
3451
3452 /* Processes all SysV units, and reshuffles the array so that
3453 * afterwards only the native units remain */
3454
3455 zero(paths);
3456 r = lookup_paths_init(&paths, SYSTEMD_SYSTEM, false, NULL, NULL, NULL);
3457 if (r < 0)
3458 return r;
3459
3460 r = 0;
3461 for (f = 1; args[f]; f++) {
3462 const char *name;
3463 char *p;
3464 bool found_native = false, found_sysv;
3465 unsigned c = 1;
3466 const char *argv[6] = { "/sbin/chkconfig", NULL, NULL, NULL, NULL };
3467 char **k, *l, *q = NULL;
3468 int j;
3469 pid_t pid;
3470 siginfo_t status;
3471
3472 name = args[f];
3473
3474 if (!endswith(name, ".service"))
3475 continue;
3476
3477 if (path_is_absolute(name))
3478 continue;
3479
3480 STRV_FOREACH(k, paths.unit_path) {
3481 p = NULL;
3482
3483 if (!isempty(arg_root))
3484 asprintf(&p, "%s/%s/%s", arg_root, *k, name);
3485 else
3486 asprintf(&p, "%s/%s", *k, name);
3487
3488 if (!p) {
3489 r = log_oom();
3490 goto finish;
3491 }
3492
3493 found_native = access(p, F_OK) >= 0;
3494 free(p);
3495
3496 if (found_native)
3497 break;
3498 }
3499
3500 if (found_native)
3501 continue;
3502
3503 p = NULL;
3504 if (!isempty(arg_root))
3505 asprintf(&p, "%s/" SYSTEM_SYSVINIT_PATH "/%s", arg_root, name);
3506 else
3507 asprintf(&p, SYSTEM_SYSVINIT_PATH "/%s", name);
3508 if (!p) {
3509 r = log_oom();
3510 goto finish;
3511 }
3512
3513 p[strlen(p) - sizeof(".service") + 1] = 0;
3514 found_sysv = access(p, F_OK) >= 0;
3515
3516 if (!found_sysv) {
3517 free(p);
3518 continue;
3519 }
3520
3521 /* Mark this entry, so that we don't try enabling it as native unit */
3522 args[f] = (char*) "";
3523
3524 log_info("%s is not a native service, redirecting to /sbin/chkconfig.", name);
3525
3526 if (!isempty(arg_root))
3527 argv[c++] = q = strappend("--root=", arg_root);
3528
3529 argv[c++] = path_get_file_name(p);
3530 argv[c++] =
3531 streq(verb, "enable") ? "on" :
3532 streq(verb, "disable") ? "off" : "--level=5";
3533 argv[c] = NULL;
3534
3535 l = strv_join((char**)argv, " ");
3536 if (!l) {
3537 free(q);
3538 free(p);
3539 r = log_oom();
3540 goto finish;
3541 }
3542
3543 log_info("Executing %s", l);
3544 free(l);
3545
3546 pid = fork();
3547 if (pid < 0) {
3548 log_error("Failed to fork: %m");
3549 free(p);
3550 free(q);
3551 r = -errno;
3552 goto finish;
3553 } else if (pid == 0) {
3554 /* Child */
3555
3556 execv(argv[0], (char**) argv);
3557 _exit(EXIT_FAILURE);
3558 }
3559
3560 free(p);
3561 free(q);
3562
3563 j = wait_for_terminate(pid, &status);
3564 if (j < 0) {
3565 log_error("Failed to wait for child: %s", strerror(-r));
3566 r = j;
3567 goto finish;
3568 }
3569
3570 if (status.si_code == CLD_EXITED) {
3571 if (streq(verb, "is-enabled")) {
3572 if (status.si_status == 0) {
3573 if (!arg_quiet)
3574 puts("enabled");
3575 r = 1;
3576 } else {
3577 if (!arg_quiet)
3578 puts("disabled");
3579 }
3580
3581 } else if (status.si_status != 0) {
3582 r = -EINVAL;
3583 goto finish;
3584 }
3585 } else {
3586 r = -EPROTO;
3587 goto finish;
3588 }
3589 }
3590
3591 finish:
3592 lookup_paths_free(&paths);
3593
3594 /* Drop all SysV units */
3595 for (f = 1, t = 1; args[f]; f++) {
3596
3597 if (isempty(args[f]))
3598 continue;
3599
3600 args[t++] = args[f];
3601 }
3602
3603 args[t] = NULL;
3604
3605 #endif
3606 return r;
3607 }
3608
3609 static int mangle_names(char **original_names, char ***mangled_names) {
3610 char **i, **l, **name;
3611
3612 l = new(char*, strv_length(original_names) + 1);
3613 if (!l)
3614 return log_oom();
3615
3616 i = l;
3617 STRV_FOREACH(name, original_names) {
3618
3619 /* When enabling units qualified path names are OK,
3620 * too, hence allow them explicitly. */
3621
3622 if (is_path(*name))
3623 *i = strdup(*name);
3624 else
3625 *i = unit_name_mangle(*name);
3626
3627 if (!*i) {
3628 strv_free(l);
3629 return log_oom();
3630 }
3631
3632 i++;
3633 }
3634
3635 *i = NULL;
3636 *mangled_names = l;
3637
3638 return 0;
3639 }
3640
3641 static int enable_unit(DBusConnection *bus, char **args) {
3642 const char *verb = args[0];
3643 UnitFileChange *changes = NULL;
3644 unsigned n_changes = 0, i;
3645 int carries_install_info = -1;
3646 DBusMessage *m = NULL, *reply = NULL;
3647 int r;
3648 DBusError error;
3649 char **mangled_names = NULL;
3650
3651 r = enable_sysv_units(args);
3652 if (r < 0)
3653 return r;
3654
3655 if (!args[1])
3656 return 0;
3657
3658 dbus_error_init(&error);
3659
3660 if (!bus || avoid_bus()) {
3661 if (streq(verb, "enable")) {
3662 r = unit_file_enable(arg_scope, arg_runtime, arg_root, args+1, arg_force, &changes, &n_changes);
3663 carries_install_info = r;
3664 } else if (streq(verb, "disable"))
3665 r = unit_file_disable(arg_scope, arg_runtime, arg_root, args+1, &changes, &n_changes);
3666 else if (streq(verb, "reenable")) {
3667 r = unit_file_reenable(arg_scope, arg_runtime, arg_root, args+1, arg_force, &changes, &n_changes);
3668 carries_install_info = r;
3669 } else if (streq(verb, "link"))
3670 r = unit_file_link(arg_scope, arg_runtime, arg_root, args+1, arg_force, &changes, &n_changes);
3671 else if (streq(verb, "preset")) {
3672 r = unit_file_preset(arg_scope, arg_runtime, arg_root, args+1, arg_force, &changes, &n_changes);
3673 carries_install_info = r;
3674 } else if (streq(verb, "mask"))
3675 r = unit_file_mask(arg_scope, arg_runtime, arg_root, args+1, arg_force, &changes, &n_changes);
3676 else if (streq(verb, "unmask"))
3677 r = unit_file_unmask(arg_scope, arg_runtime, arg_root, args+1, &changes, &n_changes);
3678 else
3679 assert_not_reached("Unknown verb");
3680
3681 if (r < 0) {
3682 log_error("Operation failed: %s", strerror(-r));
3683 goto finish;
3684 }
3685
3686 if (!arg_quiet) {
3687 for (i = 0; i < n_changes; i++) {
3688 if (changes[i].type == UNIT_FILE_SYMLINK)
3689 log_info("ln -s '%s' '%s'", changes[i].source, changes[i].path);
3690 else
3691 log_info("rm '%s'", changes[i].path);
3692 }
3693 }
3694
3695 r = 0;
3696 } else {
3697 const char *method;
3698 bool send_force = true, expect_carries_install_info = false;
3699 dbus_bool_t a, b;
3700 DBusMessageIter iter, sub, sub2;
3701
3702 if (streq(verb, "enable")) {
3703 method = "EnableUnitFiles";
3704 expect_carries_install_info = true;
3705 } else if (streq(verb, "disable")) {
3706 method = "DisableUnitFiles";
3707 send_force = false;
3708 } else if (streq(verb, "reenable")) {
3709 method = "ReenableUnitFiles";
3710 expect_carries_install_info = true;
3711 } else if (streq(verb, "link"))
3712 method = "LinkUnitFiles";
3713 else if (streq(verb, "preset")) {
3714 method = "PresetUnitFiles";
3715 expect_carries_install_info = true;
3716 } else if (streq(verb, "mask"))
3717 method = "MaskUnitFiles";
3718 else if (streq(verb, "unmask")) {
3719 method = "UnmaskUnitFiles";
3720 send_force = false;
3721 } else
3722 assert_not_reached("Unknown verb");
3723
3724 m = dbus_message_new_method_call(
3725 "org.freedesktop.systemd1",
3726 "/org/freedesktop/systemd1",
3727 "org.freedesktop.systemd1.Manager",
3728 method);
3729 if (!m) {
3730 r = log_oom();
3731 goto finish;
3732 }
3733
3734 dbus_message_iter_init_append(m, &iter);
3735
3736 r = mangle_names(args+1, &mangled_names);
3737 if(r < 0)
3738 goto finish;
3739
3740 r = bus_append_strv_iter(&iter, mangled_names);
3741 if (r < 0) {
3742 log_error("Failed to append unit files.");
3743 goto finish;
3744 }
3745
3746 a = arg_runtime;
3747 if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &a)) {
3748 log_error("Failed to append runtime boolean.");
3749 r = -ENOMEM;
3750 goto finish;
3751 }
3752
3753 if (send_force) {
3754 b = arg_force;
3755
3756 if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &b)) {
3757 log_error("Failed to append force boolean.");
3758 r = -ENOMEM;
3759 goto finish;
3760 }
3761 }
3762
3763 reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
3764 if (!reply) {
3765 log_error("Failed to issue method call: %s", bus_error_message(&error));
3766 r = -EIO;
3767 goto finish;
3768 }
3769
3770 if (!dbus_message_iter_init(reply, &iter)) {
3771 log_error("Failed to initialize iterator.");
3772 goto finish;
3773 }
3774
3775 if (expect_carries_install_info) {
3776 r = bus_iter_get_basic_and_next(&iter, DBUS_TYPE_BOOLEAN, &b, true);
3777 if (r < 0) {
3778 log_error("Failed to parse reply.");
3779 goto finish;
3780 }
3781
3782 carries_install_info = b;
3783 }
3784
3785 if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
3786 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
3787 log_error("Failed to parse reply.");
3788 r = -EIO;
3789 goto finish;
3790 }
3791
3792 dbus_message_iter_recurse(&iter, &sub);
3793 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
3794 const char *type, *path, *source;
3795
3796 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
3797 log_error("Failed to parse reply.");
3798 r = -EIO;
3799 goto finish;
3800 }
3801
3802 dbus_message_iter_recurse(&sub, &sub2);
3803
3804 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) < 0 ||
3805 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, true) < 0 ||
3806 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &source, false) < 0) {
3807 log_error("Failed to parse reply.");
3808 r = -EIO;
3809 goto finish;
3810 }
3811
3812 if (!arg_quiet) {
3813 if (streq(type, "symlink"))
3814 log_info("ln -s '%s' '%s'", source, path);
3815 else
3816 log_info("rm '%s'", path);
3817 }
3818
3819 dbus_message_iter_next(&sub);
3820 }
3821
3822 /* Try to reload if enabeld */
3823 if (!arg_no_reload)
3824 r = daemon_reload(bus, args);
3825 }
3826
3827 if (carries_install_info == 0)
3828 log_warning(
3829 "The unit files have no [Install] section. They are not meant to be enabled\n"
3830 "using systemctl.\n"
3831 "Possible reasons for having this kind of units are:\n"
3832 "1) A unit may be statically enabled by being symlinked from another unit's\n"
3833 " .wants/ or .requires/ directory.\n"
3834 "2) A unit's purpose may be to act as a helper for some other unit which has\n"
3835 " a requirement dependency on it.\n"
3836 "3) A unit may be started when needed via activation (socket, path, timer,\n"
3837 " D-Bus, udev, scripted systemctl call, ...).\n");
3838
3839 finish:
3840 if (m)
3841 dbus_message_unref(m);
3842
3843 if (reply)
3844 dbus_message_unref(reply);
3845
3846 unit_file_changes_free(changes, n_changes);
3847
3848 dbus_error_free(&error);
3849
3850 strv_free(mangled_names);
3851
3852 return r;
3853 }
3854
3855 static int unit_is_enabled(DBusConnection *bus, char **args) {
3856 DBusError error;
3857 int r;
3858 DBusMessage *reply = NULL;
3859 bool enabled;
3860 char **name;
3861
3862 dbus_error_init(&error);
3863
3864 r = enable_sysv_units(args);
3865 if (r < 0)
3866 return r;
3867
3868 enabled = r > 0;
3869
3870 if (!bus || avoid_bus()) {
3871
3872 STRV_FOREACH(name, args+1) {
3873 UnitFileState state;
3874
3875 state = unit_file_get_state(arg_scope, arg_root, *name);
3876 if (state < 0) {
3877 r = state;
3878 goto finish;
3879 }
3880
3881 if (state == UNIT_FILE_ENABLED ||
3882 state == UNIT_FILE_ENABLED_RUNTIME ||
3883 state == UNIT_FILE_STATIC)
3884 enabled = true;
3885
3886 if (!arg_quiet)
3887 puts(unit_file_state_to_string(state));
3888 }
3889
3890 } else {
3891 STRV_FOREACH(name, args+1) {
3892 const char *s;
3893
3894 r = bus_method_call_with_reply (
3895 bus,
3896 "org.freedesktop.systemd1",
3897 "/org/freedesktop/systemd1",
3898 "org.freedesktop.systemd1.Manager",
3899 "GetUnitFileState",
3900 &reply,
3901 NULL,
3902 DBUS_TYPE_STRING, name,
3903 DBUS_TYPE_INVALID);
3904 if (r)
3905 goto finish;
3906
3907 if (!dbus_message_get_args(reply, &error,
3908 DBUS_TYPE_STRING, &s,
3909 DBUS_TYPE_INVALID)) {
3910 log_error("Failed to parse reply: %s", bus_error_message(&error));
3911 r = -EIO;
3912 goto finish;
3913 }
3914
3915 dbus_message_unref(reply);
3916 reply = NULL;
3917
3918 if (streq(s, "enabled") ||
3919 streq(s, "enabled-runtime") ||
3920 streq(s, "static"))
3921 enabled = true;
3922
3923 if (!arg_quiet)
3924 puts(s);
3925 }
3926 }
3927
3928 r = enabled ? 0 : 1;
3929
3930 finish:
3931 if (reply)
3932 dbus_message_unref(reply);
3933
3934 dbus_error_free(&error);
3935 return r;
3936 }
3937
3938 static int systemctl_help(void) {
3939
3940 pager_open_if_enabled();
3941
3942 printf("%s [OPTIONS...] {COMMAND} ...\n\n"
3943 "Query or send control commands to the systemd manager.\n\n"
3944 " -h --help Show this help\n"
3945 " --version Show package version\n"
3946 " -t --type=TYPE List only units of a particular type\n"
3947 " -p --property=NAME Show only properties by this name\n"
3948 " -a --all Show all units/properties, including dead/empty ones\n"
3949 " --failed Show only failed units\n"
3950 " --full Don't ellipsize unit names on output\n"
3951 " --fail When queueing a new job, fail if conflicting jobs are\n"
3952 " pending\n"
3953 " --ignore-dependencies\n"
3954 " When queueing a new job, ignore all its dependencies\n"
3955 " --kill-who=WHO Who to send signal to\n"
3956 " -s --signal=SIGNAL Which signal to send\n"
3957 " -H --host=[USER@]HOST\n"
3958 " Show information for remote host\n"
3959 " -P --privileged Acquire privileges before execution\n"
3960 " -q --quiet Suppress output\n"
3961 " --no-block Do not wait until operation finished\n"
3962 " --no-wall Don't send wall message before halt/power-off/reboot\n"
3963 " --no-reload When enabling/disabling unit files, don't reload daemon\n"
3964 " configuration\n"
3965 " --no-legend Do not print a legend (column headers and hints)\n"
3966 " --no-pager Do not pipe output into a pager\n"
3967 " --no-ask-password\n"
3968 " Do not ask for system passwords\n"
3969 " --order When generating graph for dot, show only order\n"
3970 " --require When generating graph for dot, show only requirement\n"
3971 " --system Connect to system manager\n"
3972 " --user Connect to user service manager\n"
3973 " --global Enable/disable unit files globally\n"
3974 " -f --force When enabling unit files, override existing symlinks\n"
3975 " When shutting down, execute action immediately\n"
3976 " --root=PATH Enable unit files in the specified root directory\n"
3977 " --runtime Enable unit files only temporarily until next reboot\n"
3978 " -n --lines=INTEGER Journal entries to show\n"
3979 " -o --output=STRING Change journal output mode (short, short-monotonic,\n"
3980 " verbose, export, json, json-pretty, json-sse, cat)\n\n"
3981 "Unit Commands:\n"
3982 " list-units List loaded units\n"
3983 " start [NAME...] Start (activate) one or more units\n"
3984 " stop [NAME...] Stop (deactivate) one or more units\n"
3985 " reload [NAME...] Reload one or more units\n"
3986 " restart [NAME...] Start or restart one or more units\n"
3987 " try-restart [NAME...] Restart one or more units if active\n"
3988 " reload-or-restart [NAME...] Reload one or more units if possible,\n"
3989 " otherwise start or restart\n"
3990 " reload-or-try-restart [NAME...] Reload one or more units if possible,\n"
3991 " otherwise restart if active\n"
3992 " isolate [NAME] Start one unit and stop all others\n"
3993 " kill [NAME...] Send signal to processes of a unit\n"
3994 " is-active [NAME...] Check whether units are active\n"
3995 " is-failed [NAME...] Check whether units are failed\n"
3996 " status [NAME...|PID...] Show runtime status of one or more units\n"
3997 " show [NAME...|JOB...] Show properties of one or more\n"
3998 " units/jobs or the manager\n"
3999 " help [NAME...|PID...] Show manual for one or more units\n"
4000 " reset-failed [NAME...] Reset failed state for all, one, or more\n"
4001 " units\n"
4002 " load [NAME...] Load one or more units\n\n"
4003 "Unit File Commands:\n"
4004 " list-unit-files List installed unit files\n"
4005 " enable [NAME...] Enable one or more unit files\n"
4006 " disable [NAME...] Disable one or more unit files\n"
4007 " reenable [NAME...] Reenable one or more unit files\n"
4008 " preset [NAME...] Enable/disable one or more unit files\n"
4009 " based on preset configuration\n"
4010 " mask [NAME...] Mask one or more units\n"
4011 " unmask [NAME...] Unmask one or more units\n"
4012 " link [PATH...] Link one or more units files into\n"
4013 " the search path\n"
4014 " is-enabled [NAME...] Check whether unit files are enabled\n\n"
4015 "Job Commands:\n"
4016 " list-jobs List jobs\n"
4017 " cancel [JOB...] Cancel all, one, or more jobs\n\n"
4018 "Status Commands:\n"
4019 " dump Dump server status\n"
4020 " dot Dump dependency graph for dot(1)\n\n"
4021 "Snapshot Commands:\n"
4022 " snapshot [NAME] Create a snapshot\n"
4023 " delete [NAME...] Remove one or more snapshots\n\n"
4024 "Environment Commands:\n"
4025 " show-environment Dump environment\n"
4026 " set-environment [NAME=VALUE...] Set one or more environment variables\n"
4027 " unset-environment [NAME...] Unset one or more environment variables\n\n"
4028 "Manager Lifecycle Commands:\n"
4029 " daemon-reload Reload systemd manager configuration\n"
4030 " daemon-reexec Reexecute systemd manager\n\n"
4031 "System Commands:\n"
4032 " default Enter system default mode\n"
4033 " rescue Enter system rescue mode\n"
4034 " emergency Enter system emergency mode\n"
4035 " halt Shut down and halt the system\n"
4036 " poweroff Shut down and power-off the system\n"
4037 " reboot Shut down and reboot the system\n"
4038 " kexec Shut down and reboot the system with kexec\n"
4039 " exit Request user instance exit\n"
4040 " switch-root [ROOT] [INIT] Change to a different root file system\n"
4041 " suspend Suspend the system\n"
4042 " hibernate Hibernate the system\n"
4043 " hybrid-sleep Hibernate and suspend the system\n",
4044 program_invocation_short_name);
4045
4046 return 0;
4047 }
4048
4049 static int halt_help(void) {
4050
4051 printf("%s [OPTIONS...]\n\n"
4052 "%s the system.\n\n"
4053 " --help Show this help\n"
4054 " --halt Halt the machine\n"
4055 " -p --poweroff Switch off the machine\n"
4056 " --reboot Reboot the machine\n"
4057 " -f --force Force immediate halt/power-off/reboot\n"
4058 " -w --wtmp-only Don't halt/power-off/reboot, just write wtmp record\n"
4059 " -d --no-wtmp Don't write wtmp record\n"
4060 " --no-wall Don't send wall message before halt/power-off/reboot\n",
4061 program_invocation_short_name,
4062 arg_action == ACTION_REBOOT ? "Reboot" :
4063 arg_action == ACTION_POWEROFF ? "Power off" :
4064 "Halt");
4065
4066 return 0;
4067 }
4068
4069 static int shutdown_help(void) {
4070
4071 printf("%s [OPTIONS...] [TIME] [WALL...]\n\n"
4072 "Shut down the system.\n\n"
4073 " --help Show this help\n"
4074 " -H --halt Halt the machine\n"
4075 " -P --poweroff Power-off the machine\n"
4076 " -r --reboot Reboot the machine\n"
4077 " -h Equivalent to --poweroff, overridden by --halt\n"
4078 " -k Don't halt/power-off/reboot, just send warnings\n"
4079 " --no-wall Don't send wall message before halt/power-off/reboot\n"
4080 " -c Cancel a pending shutdown\n",
4081 program_invocation_short_name);
4082
4083 return 0;
4084 }
4085
4086 static int telinit_help(void) {
4087
4088 printf("%s [OPTIONS...] {COMMAND}\n\n"
4089 "Send control commands to the init daemon.\n\n"
4090 " --help Show this help\n"
4091 " --no-wall Don't send wall message before halt/power-off/reboot\n\n"
4092 "Commands:\n"
4093 " 0 Power-off the machine\n"
4094 " 6 Reboot the machine\n"
4095 " 2, 3, 4, 5 Start runlevelX.target unit\n"
4096 " 1, s, S Enter rescue mode\n"
4097 " q, Q Reload init daemon configuration\n"
4098 " u, U Reexecute init daemon\n",
4099 program_invocation_short_name);
4100
4101 return 0;
4102 }
4103
4104 static int runlevel_help(void) {
4105
4106 printf("%s [OPTIONS...]\n\n"
4107 "Prints the previous and current runlevel of the init system.\n\n"
4108 " --help Show this help\n",
4109 program_invocation_short_name);
4110
4111 return 0;
4112 }
4113
4114 static int help_types(void) {
4115 int i;
4116
4117 puts("Available unit types:");
4118 for(i = UNIT_SERVICE; i < _UNIT_TYPE_MAX; i++)
4119 if (unit_type_table[i])
4120 puts(unit_type_table[i]);
4121
4122 puts("\nAvailable unit load states: ");
4123 for(i = UNIT_STUB; i < _UNIT_LOAD_STATE_MAX; i++)
4124 if (unit_type_table[i])
4125 puts(unit_load_state_table[i]);
4126
4127 return 0;
4128 }
4129
4130 static int systemctl_parse_argv(int argc, char *argv[]) {
4131
4132 enum {
4133 ARG_FAIL = 0x100,
4134 ARG_IGNORE_DEPENDENCIES,
4135 ARG_VERSION,
4136 ARG_USER,
4137 ARG_SYSTEM,
4138 ARG_GLOBAL,
4139 ARG_NO_BLOCK,
4140 ARG_NO_LEGEND,
4141 ARG_NO_PAGER,
4142 ARG_NO_WALL,
4143 ARG_ORDER,
4144 ARG_REQUIRE,
4145 ARG_ROOT,
4146 ARG_FULL,
4147 ARG_NO_RELOAD,
4148 ARG_KILL_WHO,
4149 ARG_NO_ASK_PASSWORD,
4150 ARG_FAILED,
4151 ARG_RUNTIME,
4152 ARG_FORCE
4153 };
4154
4155 static const struct option options[] = {
4156 { "help", no_argument, NULL, 'h' },
4157 { "version", no_argument, NULL, ARG_VERSION },
4158 { "type", required_argument, NULL, 't' },
4159 { "property", required_argument, NULL, 'p' },
4160 { "all", no_argument, NULL, 'a' },
4161 { "failed", no_argument, NULL, ARG_FAILED },
4162 { "full", no_argument, NULL, ARG_FULL },
4163 { "fail", no_argument, NULL, ARG_FAIL },
4164 { "ignore-dependencies", no_argument, NULL, ARG_IGNORE_DEPENDENCIES },
4165 { "user", no_argument, NULL, ARG_USER },
4166 { "system", no_argument, NULL, ARG_SYSTEM },
4167 { "global", no_argument, NULL, ARG_GLOBAL },
4168 { "no-block", no_argument, NULL, ARG_NO_BLOCK },
4169 { "no-legend", no_argument, NULL, ARG_NO_LEGEND },
4170 { "no-pager", no_argument, NULL, ARG_NO_PAGER },
4171 { "no-wall", no_argument, NULL, ARG_NO_WALL },
4172 { "quiet", no_argument, NULL, 'q' },
4173 { "order", no_argument, NULL, ARG_ORDER },
4174 { "require", no_argument, NULL, ARG_REQUIRE },
4175 { "root", required_argument, NULL, ARG_ROOT },
4176 { "force", no_argument, NULL, ARG_FORCE },
4177 { "no-reload", no_argument, NULL, ARG_NO_RELOAD },
4178 { "kill-who", required_argument, NULL, ARG_KILL_WHO },
4179 { "signal", required_argument, NULL, 's' },
4180 { "no-ask-password", no_argument, NULL, ARG_NO_ASK_PASSWORD },
4181 { "host", required_argument, NULL, 'H' },
4182 { "privileged",no_argument, NULL, 'P' },
4183 { "runtime", no_argument, NULL, ARG_RUNTIME },
4184 { "lines", required_argument, NULL, 'n' },
4185 { "output", required_argument, NULL, 'o' },
4186 { NULL, 0, NULL, 0 }
4187 };
4188
4189 int c;
4190
4191 assert(argc >= 0);
4192 assert(argv);
4193
4194 while ((c = getopt_long(argc, argv, "ht:p:aqfs:H:Pn:o:", options, NULL)) >= 0) {
4195
4196 switch (c) {
4197
4198 case 'h':
4199 systemctl_help();
4200 return 0;
4201
4202 case ARG_VERSION:
4203 puts(PACKAGE_STRING);
4204 puts(SYSTEMD_FEATURES);
4205 return 0;
4206
4207 case 't':
4208 if (streq(optarg, "help")) {
4209 help_types();
4210 return 0;
4211 }
4212
4213 if (unit_type_from_string(optarg) >= 0) {
4214 arg_type = optarg;
4215 break;
4216 }
4217 if (unit_load_state_from_string(optarg) >= 0) {
4218 arg_load_state = optarg;
4219 break;
4220 }
4221 log_error("Unkown unit type or load state '%s'.",
4222 optarg);
4223 log_info("Use -t help to see a list of allowed values.");
4224 return -EINVAL;
4225 case 'p': {
4226 char **l;
4227
4228 if (!(l = strv_append(arg_property, optarg)))
4229 return -ENOMEM;
4230
4231 strv_free(arg_property);
4232 arg_property = l;
4233
4234 /* If the user asked for a particular
4235 * property, show it to him, even if it is
4236 * empty. */
4237 arg_all = true;
4238 break;
4239 }
4240
4241 case 'a':
4242 arg_all = true;
4243 break;
4244
4245 case ARG_FAIL:
4246 arg_job_mode = "fail";
4247 break;
4248
4249 case ARG_IGNORE_DEPENDENCIES:
4250 arg_job_mode = "ignore-dependencies";
4251 break;
4252
4253 case ARG_USER:
4254 arg_scope = UNIT_FILE_USER;
4255 break;
4256
4257 case ARG_SYSTEM:
4258 arg_scope = UNIT_FILE_SYSTEM;
4259 break;
4260
4261 case ARG_GLOBAL:
4262 arg_scope = UNIT_FILE_GLOBAL;
4263 break;
4264
4265 case ARG_NO_BLOCK:
4266 arg_no_block = true;
4267 break;
4268
4269 case ARG_NO_LEGEND:
4270 arg_no_legend = true;
4271 break;
4272
4273 case ARG_NO_PAGER:
4274 arg_no_pager = true;
4275 break;
4276
4277 case ARG_NO_WALL:
4278 arg_no_wall = true;
4279 break;
4280
4281 case ARG_ORDER:
4282 arg_dot = DOT_ORDER;
4283 break;
4284
4285 case ARG_REQUIRE:
4286 arg_dot = DOT_REQUIRE;
4287 break;
4288
4289 case ARG_ROOT:
4290 arg_root = optarg;
4291 break;
4292
4293 case ARG_FULL:
4294 arg_full = true;
4295 break;
4296
4297 case ARG_FAILED:
4298 arg_failed = true;
4299 break;
4300
4301 case 'q':
4302 arg_quiet = true;
4303 break;
4304
4305 case ARG_FORCE:
4306 arg_force ++;
4307 break;
4308
4309 case 'f':
4310 arg_force ++;
4311 break;
4312
4313 case ARG_NO_RELOAD:
4314 arg_no_reload = true;
4315 break;
4316
4317 case ARG_KILL_WHO:
4318 arg_kill_who = optarg;
4319 break;
4320
4321 case 's':
4322 if ((arg_signal = signal_from_string_try_harder(optarg)) < 0) {
4323 log_error("Failed to parse signal string %s.", optarg);
4324 return -EINVAL;
4325 }
4326 break;
4327
4328 case ARG_NO_ASK_PASSWORD:
4329 arg_ask_password = false;
4330 break;
4331
4332 case 'P':
4333 arg_transport = TRANSPORT_POLKIT;
4334 break;
4335
4336 case 'H':
4337 arg_transport = TRANSPORT_SSH;
4338 arg_host = optarg;
4339 break;
4340
4341 case ARG_RUNTIME:
4342 arg_runtime = true;
4343 break;
4344
4345 case 'n':
4346 if (safe_atou(optarg, &arg_lines) < 0) {
4347 log_error("Failed to parse lines '%s'", optarg);
4348 return -EINVAL;
4349 }
4350 break;
4351
4352 case 'o':
4353 arg_output = output_mode_from_string(optarg);
4354 if (arg_output < 0) {
4355 log_error("Unknown output '%s'.", optarg);
4356 return -EINVAL;
4357 }
4358 break;
4359
4360 case '?':
4361 return -EINVAL;
4362
4363 default:
4364 log_error("Unknown option code '%c'.", c);
4365 return -EINVAL;
4366 }
4367 }
4368
4369 if (arg_transport != TRANSPORT_NORMAL && arg_scope != UNIT_FILE_SYSTEM) {
4370 log_error("Cannot access user instance remotely.");
4371 return -EINVAL;
4372 }
4373
4374 return 1;
4375 }
4376
4377 static int halt_parse_argv(int argc, char *argv[]) {
4378
4379 enum {
4380 ARG_HELP = 0x100,
4381 ARG_HALT,
4382 ARG_REBOOT,
4383 ARG_NO_WALL
4384 };
4385
4386 static const struct option options[] = {
4387 { "help", no_argument, NULL, ARG_HELP },
4388 { "halt", no_argument, NULL, ARG_HALT },
4389 { "poweroff", no_argument, NULL, 'p' },
4390 { "reboot", no_argument, NULL, ARG_REBOOT },
4391 { "force", no_argument, NULL, 'f' },
4392 { "wtmp-only", no_argument, NULL, 'w' },
4393 { "no-wtmp", no_argument, NULL, 'd' },
4394 { "no-wall", no_argument, NULL, ARG_NO_WALL },
4395 { NULL, 0, NULL, 0 }
4396 };
4397
4398 int c, runlevel;
4399
4400 assert(argc >= 0);
4401 assert(argv);
4402
4403 if (utmp_get_runlevel(&runlevel, NULL) >= 0)
4404 if (runlevel == '0' || runlevel == '6')
4405 arg_force = 2;
4406
4407 while ((c = getopt_long(argc, argv, "pfwdnih", options, NULL)) >= 0) {
4408 switch (c) {
4409
4410 case ARG_HELP:
4411 halt_help();
4412 return 0;
4413
4414 case ARG_HALT:
4415 arg_action = ACTION_HALT;
4416 break;
4417
4418 case 'p':
4419 if (arg_action != ACTION_REBOOT)
4420 arg_action = ACTION_POWEROFF;
4421 break;
4422
4423 case ARG_REBOOT:
4424 arg_action = ACTION_REBOOT;
4425 break;
4426
4427 case 'f':
4428 arg_force = 2;
4429 break;
4430
4431 case 'w':
4432 arg_dry = true;
4433 break;
4434
4435 case 'd':
4436 arg_no_wtmp = true;
4437 break;
4438
4439 case ARG_NO_WALL:
4440 arg_no_wall = true;
4441 break;
4442
4443 case 'i':
4444 case 'h':
4445 case 'n':
4446 /* Compatibility nops */
4447 break;
4448
4449 case '?':
4450 return -EINVAL;
4451
4452 default:
4453 log_error("Unknown option code '%c'.", c);
4454 return -EINVAL;
4455 }
4456 }
4457
4458 if (optind < argc) {
4459 log_error("Too many arguments.");
4460 return -EINVAL;
4461 }
4462
4463 return 1;
4464 }
4465
4466 static int parse_time_spec(const char *t, usec_t *_u) {
4467 assert(t);
4468 assert(_u);
4469
4470 if (streq(t, "now"))
4471 *_u = 0;
4472 else if (!strchr(t, ':')) {
4473 uint64_t u;
4474
4475 if (safe_atou64(t, &u) < 0)
4476 return -EINVAL;
4477
4478 *_u = now(CLOCK_REALTIME) + USEC_PER_MINUTE * u;
4479 } else {
4480 char *e = NULL;
4481 long hour, minute;
4482 struct tm tm;
4483 time_t s;
4484 usec_t n;
4485
4486 errno = 0;
4487 hour = strtol(t, &e, 10);
4488 if (errno != 0 || *e != ':' || hour < 0 || hour > 23)
4489 return -EINVAL;
4490
4491 minute = strtol(e+1, &e, 10);
4492 if (errno != 0 || *e != 0 || minute < 0 || minute > 59)
4493 return -EINVAL;
4494
4495 n = now(CLOCK_REALTIME);
4496 s = (time_t) (n / USEC_PER_SEC);
4497
4498 zero(tm);
4499 assert_se(localtime_r(&s, &tm));
4500
4501 tm.tm_hour = (int) hour;
4502 tm.tm_min = (int) minute;
4503 tm.tm_sec = 0;
4504
4505 assert_se(s = mktime(&tm));
4506
4507 *_u = (usec_t) s * USEC_PER_SEC;
4508
4509 while (*_u <= n)
4510 *_u += USEC_PER_DAY;
4511 }
4512
4513 return 0;
4514 }
4515
4516 static int shutdown_parse_argv(int argc, char *argv[]) {
4517
4518 enum {
4519 ARG_HELP = 0x100,
4520 ARG_NO_WALL
4521 };
4522
4523 static const struct option options[] = {
4524 { "help", no_argument, NULL, ARG_HELP },
4525 { "halt", no_argument, NULL, 'H' },
4526 { "poweroff", no_argument, NULL, 'P' },
4527 { "reboot", no_argument, NULL, 'r' },
4528 { "kexec", no_argument, NULL, 'K' }, /* not documented extension */
4529 { "no-wall", no_argument, NULL, ARG_NO_WALL },
4530 { NULL, 0, NULL, 0 }
4531 };
4532
4533 int c, r;
4534
4535 assert(argc >= 0);
4536 assert(argv);
4537
4538 while ((c = getopt_long(argc, argv, "HPrhkt:afFc", options, NULL)) >= 0) {
4539 switch (c) {
4540
4541 case ARG_HELP:
4542 shutdown_help();
4543 return 0;
4544
4545 case 'H':
4546 arg_action = ACTION_HALT;
4547 break;
4548
4549 case 'P':
4550 arg_action = ACTION_POWEROFF;
4551 break;
4552
4553 case 'r':
4554 if (kexec_loaded())
4555 arg_action = ACTION_KEXEC;
4556 else
4557 arg_action = ACTION_REBOOT;
4558 break;
4559
4560 case 'K':
4561 arg_action = ACTION_KEXEC;
4562 break;
4563
4564 case 'h':
4565 if (arg_action != ACTION_HALT)
4566 arg_action = ACTION_POWEROFF;
4567 break;
4568
4569 case 'k':
4570 arg_dry = true;
4571 break;
4572
4573 case ARG_NO_WALL:
4574 arg_no_wall = true;
4575 break;
4576
4577 case 't':
4578 case 'a':
4579 /* Compatibility nops */
4580 break;
4581
4582 case 'c':
4583 arg_action = ACTION_CANCEL_SHUTDOWN;
4584 break;
4585
4586 case '?':
4587 return -EINVAL;
4588
4589 default:
4590 log_error("Unknown option code '%c'.", c);
4591 return -EINVAL;
4592 }
4593 }
4594
4595 if (argc > optind && arg_action != ACTION_CANCEL_SHUTDOWN) {
4596 r = parse_time_spec(argv[optind], &arg_when);
4597 if (r < 0) {
4598 log_error("Failed to parse time specification: %s", argv[optind]);
4599 return r;
4600 }
4601 } else
4602 arg_when = now(CLOCK_REALTIME) + USEC_PER_MINUTE;
4603
4604 if (argc > optind && arg_action == ACTION_CANCEL_SHUTDOWN)
4605 /* No time argument for shutdown cancel */
4606 arg_wall = argv + optind;
4607 else if (argc > optind + 1)
4608 /* We skip the time argument */
4609 arg_wall = argv + optind + 1;
4610
4611 optind = argc;
4612
4613 return 1;
4614 }
4615
4616 static int telinit_parse_argv(int argc, char *argv[]) {
4617
4618 enum {
4619 ARG_HELP = 0x100,
4620 ARG_NO_WALL
4621 };
4622
4623 static const struct option options[] = {
4624 { "help", no_argument, NULL, ARG_HELP },
4625 { "no-wall", no_argument, NULL, ARG_NO_WALL },
4626 { NULL, 0, NULL, 0 }
4627 };
4628
4629 static const struct {
4630 char from;
4631 enum action to;
4632 } table[] = {
4633 { '0', ACTION_POWEROFF },
4634 { '6', ACTION_REBOOT },
4635 { '1', ACTION_RESCUE },
4636 { '2', ACTION_RUNLEVEL2 },
4637 { '3', ACTION_RUNLEVEL3 },
4638 { '4', ACTION_RUNLEVEL4 },
4639 { '5', ACTION_RUNLEVEL5 },
4640 { 's', ACTION_RESCUE },
4641 { 'S', ACTION_RESCUE },
4642 { 'q', ACTION_RELOAD },
4643 { 'Q', ACTION_RELOAD },
4644 { 'u', ACTION_REEXEC },
4645 { 'U', ACTION_REEXEC }
4646 };
4647
4648 unsigned i;
4649 int c;
4650
4651 assert(argc >= 0);
4652 assert(argv);
4653
4654 while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) {
4655 switch (c) {
4656
4657 case ARG_HELP:
4658 telinit_help();
4659 return 0;
4660
4661 case ARG_NO_WALL:
4662 arg_no_wall = true;
4663 break;
4664
4665 case '?':
4666 return -EINVAL;
4667
4668 default:
4669 log_error("Unknown option code '%c'.", c);
4670 return -EINVAL;
4671 }
4672 }
4673
4674 if (optind >= argc) {
4675 telinit_help();
4676 return -EINVAL;
4677 }
4678
4679 if (optind + 1 < argc) {
4680 log_error("Too many arguments.");
4681 return -EINVAL;
4682 }
4683
4684 if (strlen(argv[optind]) != 1) {
4685 log_error("Expected single character argument.");
4686 return -EINVAL;
4687 }
4688
4689 for (i = 0; i < ELEMENTSOF(table); i++)
4690 if (table[i].from == argv[optind][0])
4691 break;
4692
4693 if (i >= ELEMENTSOF(table)) {
4694 log_error("Unknown command '%s'.", argv[optind]);
4695 return -EINVAL;
4696 }
4697
4698 arg_action = table[i].to;
4699
4700 optind ++;
4701
4702 return 1;
4703 }
4704
4705 static int runlevel_parse_argv(int argc, char *argv[]) {
4706
4707 enum {
4708 ARG_HELP = 0x100,
4709 };
4710
4711 static const struct option options[] = {
4712 { "help", no_argument, NULL, ARG_HELP },
4713 { NULL, 0, NULL, 0 }
4714 };
4715
4716 int c;
4717
4718 assert(argc >= 0);
4719 assert(argv);
4720
4721 while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) {
4722 switch (c) {
4723
4724 case ARG_HELP:
4725 runlevel_help();
4726 return 0;
4727
4728 case '?':
4729 return -EINVAL;
4730
4731 default:
4732 log_error("Unknown option code '%c'.", c);
4733 return -EINVAL;
4734 }
4735 }
4736
4737 if (optind < argc) {
4738 log_error("Too many arguments.");
4739 return -EINVAL;
4740 }
4741
4742 return 1;
4743 }
4744
4745 static int parse_argv(int argc, char *argv[]) {
4746 assert(argc >= 0);
4747 assert(argv);
4748
4749 if (program_invocation_short_name) {
4750
4751 if (strstr(program_invocation_short_name, "halt")) {
4752 arg_action = ACTION_HALT;
4753 return halt_parse_argv(argc, argv);
4754 } else if (strstr(program_invocation_short_name, "poweroff")) {
4755 arg_action = ACTION_POWEROFF;
4756 return halt_parse_argv(argc, argv);
4757 } else if (strstr(program_invocation_short_name, "reboot")) {
4758 if (kexec_loaded())
4759 arg_action = ACTION_KEXEC;
4760 else
4761 arg_action = ACTION_REBOOT;
4762 return halt_parse_argv(argc, argv);
4763 } else if (strstr(program_invocation_short_name, "shutdown")) {
4764 arg_action = ACTION_POWEROFF;
4765 return shutdown_parse_argv(argc, argv);
4766 } else if (strstr(program_invocation_short_name, "init")) {
4767
4768 if (sd_booted() > 0) {
4769 arg_action = ACTION_INVALID;
4770 return telinit_parse_argv(argc, argv);
4771 } else {
4772 /* Hmm, so some other init system is
4773 * running, we need to forward this
4774 * request to it. For now we simply
4775 * guess that it is Upstart. */
4776
4777 execv("/lib/upstart/telinit", argv);
4778
4779 log_error("Couldn't find an alternative telinit implementation to spawn.");
4780 return -EIO;
4781 }
4782
4783 } else if (strstr(program_invocation_short_name, "runlevel")) {
4784 arg_action = ACTION_RUNLEVEL;
4785 return runlevel_parse_argv(argc, argv);
4786 }
4787 }
4788
4789 arg_action = ACTION_SYSTEMCTL;
4790 return systemctl_parse_argv(argc, argv);
4791 }
4792
4793 static int action_to_runlevel(void) {
4794
4795 static const char table[_ACTION_MAX] = {
4796 [ACTION_HALT] = '0',
4797 [ACTION_POWEROFF] = '0',
4798 [ACTION_REBOOT] = '6',
4799 [ACTION_RUNLEVEL2] = '2',
4800 [ACTION_RUNLEVEL3] = '3',
4801 [ACTION_RUNLEVEL4] = '4',
4802 [ACTION_RUNLEVEL5] = '5',
4803 [ACTION_RESCUE] = '1'
4804 };
4805
4806 assert(arg_action < _ACTION_MAX);
4807
4808 return table[arg_action];
4809 }
4810
4811 static int talk_upstart(void) {
4812 DBusMessage *m = NULL, *reply = NULL;
4813 DBusError error;
4814 int previous, rl, r;
4815 char
4816 env1_buf[] = "RUNLEVEL=X",
4817 env2_buf[] = "PREVLEVEL=X";
4818 char *env1 = env1_buf, *env2 = env2_buf;
4819 const char *emit = "runlevel";
4820 dbus_bool_t b_false = FALSE;
4821 DBusMessageIter iter, sub;
4822 DBusConnection *bus;
4823
4824 dbus_error_init(&error);
4825
4826 if (!(rl = action_to_runlevel()))
4827 return 0;
4828
4829 if (utmp_get_runlevel(&previous, NULL) < 0)
4830 previous = 'N';
4831
4832 if (!(bus = dbus_connection_open_private("unix:abstract=/com/ubuntu/upstart", &error))) {
4833 if (dbus_error_has_name(&error, DBUS_ERROR_NO_SERVER)) {
4834 r = 0;
4835 goto finish;
4836 }
4837
4838 log_error("Failed to connect to Upstart bus: %s", bus_error_message(&error));
4839 r = -EIO;
4840 goto finish;
4841 }
4842
4843 if ((r = bus_check_peercred(bus)) < 0) {
4844 log_error("Failed to verify owner of bus.");
4845 goto finish;
4846 }
4847
4848 if (!(m = dbus_message_new_method_call(
4849 "com.ubuntu.Upstart",
4850 "/com/ubuntu/Upstart",
4851 "com.ubuntu.Upstart0_6",
4852 "EmitEvent"))) {
4853
4854 log_error("Could not allocate message.");
4855 r = -ENOMEM;
4856 goto finish;
4857 }
4858
4859 dbus_message_iter_init_append(m, &iter);
4860
4861 env1_buf[sizeof(env1_buf)-2] = rl;
4862 env2_buf[sizeof(env2_buf)-2] = previous;
4863
4864 if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &emit) ||
4865 !dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "s", &sub) ||
4866 !dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &env1) ||
4867 !dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &env2) ||
4868 !dbus_message_iter_close_container(&iter, &sub) ||
4869 !dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &b_false)) {
4870 log_error("Could not append arguments to message.");
4871 r = -ENOMEM;
4872 goto finish;
4873 }
4874
4875 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
4876
4877 if (bus_error_is_no_service(&error)) {
4878 r = -EADDRNOTAVAIL;
4879 goto finish;
4880 }
4881
4882 log_error("Failed to issue method call: %s", bus_error_message(&error));
4883 r = -EIO;
4884 goto finish;
4885 }
4886
4887 r = 1;
4888
4889 finish:
4890 if (m)
4891 dbus_message_unref(m);
4892
4893 if (reply)
4894 dbus_message_unref(reply);
4895
4896 if (bus) {
4897 dbus_connection_flush(bus);
4898 dbus_connection_close(bus);
4899 dbus_connection_unref(bus);
4900 }
4901
4902 dbus_error_free(&error);
4903
4904 return r;
4905 }
4906
4907 static int talk_initctl(void) {
4908 struct init_request request;
4909 int r, fd;
4910 char rl;
4911
4912 if (!(rl = action_to_runlevel()))
4913 return 0;
4914
4915 zero(request);
4916 request.magic = INIT_MAGIC;
4917 request.sleeptime = 0;
4918 request.cmd = INIT_CMD_RUNLVL;
4919 request.runlevel = rl;
4920
4921 if ((fd = open(INIT_FIFO, O_WRONLY|O_NDELAY|O_CLOEXEC|O_NOCTTY)) < 0) {
4922
4923 if (errno == ENOENT)
4924 return 0;
4925
4926 log_error("Failed to open "INIT_FIFO": %m");
4927 return -errno;
4928 }
4929
4930 errno = 0;
4931 r = loop_write(fd, &request, sizeof(request), false) != sizeof(request);
4932 close_nointr_nofail(fd);
4933
4934 if (r < 0) {
4935 log_error("Failed to write to "INIT_FIFO": %m");
4936 return errno ? -errno : -EIO;
4937 }
4938
4939 return 1;
4940 }
4941
4942 static int systemctl_main(DBusConnection *bus, int argc, char *argv[], DBusError *error) {
4943
4944 static const struct {
4945 const char* verb;
4946 const enum {
4947 MORE,
4948 LESS,
4949 EQUAL
4950 } argc_cmp;
4951 const int argc;
4952 int (* const dispatch)(DBusConnection *bus, char **args);
4953 } verbs[] = {
4954 { "list-units", LESS, 1, list_units },
4955 { "list-unit-files", EQUAL, 1, list_unit_files },
4956 { "list-jobs", EQUAL, 1, list_jobs },
4957 { "clear-jobs", EQUAL, 1, daemon_reload },
4958 { "load", MORE, 2, load_unit },
4959 { "cancel", MORE, 2, cancel_job },
4960 { "start", MORE, 2, start_unit },
4961 { "stop", MORE, 2, start_unit },
4962 { "condstop", MORE, 2, start_unit }, /* For compatibility with ALTLinux */
4963 { "reload", MORE, 2, start_unit },
4964 { "restart", MORE, 2, start_unit },
4965 { "try-restart", MORE, 2, start_unit },
4966 { "reload-or-restart", MORE, 2, start_unit },
4967 { "reload-or-try-restart", MORE, 2, start_unit },
4968 { "force-reload", MORE, 2, start_unit }, /* For compatibility with SysV */
4969 { "condreload", MORE, 2, start_unit }, /* For compatibility with ALTLinux */
4970 { "condrestart", MORE, 2, start_unit }, /* For compatibility with RH */
4971 { "isolate", EQUAL, 2, start_unit },
4972 { "kill", MORE, 2, kill_unit },
4973 { "is-active", MORE, 2, check_unit_active },
4974 { "check", MORE, 2, check_unit_active },
4975 { "is-failed", MORE, 2, check_unit_failed },
4976 { "show", MORE, 1, show },
4977 { "status", MORE, 2, show },
4978 { "help", MORE, 2, show },
4979 { "dump", EQUAL, 1, dump },
4980 { "dot", EQUAL, 1, dot },
4981 { "snapshot", LESS, 2, snapshot },
4982 { "delete", MORE, 2, delete_snapshot },
4983 { "daemon-reload", EQUAL, 1, daemon_reload },
4984 { "daemon-reexec", EQUAL, 1, daemon_reload },
4985 { "show-environment", EQUAL, 1, show_enviroment },
4986 { "set-environment", MORE, 2, set_environment },
4987 { "unset-environment", MORE, 2, set_environment },
4988 { "halt", EQUAL, 1, start_special },
4989 { "poweroff", EQUAL, 1, start_special },
4990 { "reboot", EQUAL, 1, start_special },
4991 { "kexec", EQUAL, 1, start_special },
4992 { "suspend", EQUAL, 1, start_special },
4993 { "hibernate", EQUAL, 1, start_special },
4994 { "hybrid-sleep", EQUAL, 1, start_special },
4995 { "default", EQUAL, 1, start_special },
4996 { "rescue", EQUAL, 1, start_special },
4997 { "emergency", EQUAL, 1, start_special },
4998 { "exit", EQUAL, 1, start_special },
4999 { "reset-failed", MORE, 1, reset_failed },
5000 { "enable", MORE, 2, enable_unit },
5001 { "disable", MORE, 2, enable_unit },
5002 { "is-enabled", MORE, 2, unit_is_enabled },
5003 { "reenable", MORE, 2, enable_unit },
5004 { "preset", MORE, 2, enable_unit },
5005 { "mask", MORE, 2, enable_unit },
5006 { "unmask", MORE, 2, enable_unit },
5007 { "link", MORE, 2, enable_unit },
5008 { "switch-root", MORE, 2, switch_root },
5009 };
5010
5011 int left;
5012 unsigned i;
5013
5014 assert(argc >= 0);
5015 assert(argv);
5016 assert(error);
5017
5018 left = argc - optind;
5019
5020 if (left <= 0)
5021 /* Special rule: no arguments means "list-units" */
5022 i = 0;
5023 else {
5024 if (streq(argv[optind], "help") && !argv[optind+1]) {
5025 log_error("This command expects one or more "
5026 "unit names. Did you mean --help?");
5027 return -EINVAL;
5028 }
5029
5030 for (i = 0; i < ELEMENTSOF(verbs); i++)
5031 if (streq(argv[optind], verbs[i].verb))
5032 break;
5033
5034 if (i >= ELEMENTSOF(verbs)) {
5035 log_error("Unknown operation '%s'.", argv[optind]);
5036 return -EINVAL;
5037 }
5038 }
5039
5040 switch (verbs[i].argc_cmp) {
5041
5042 case EQUAL:
5043 if (left != verbs[i].argc) {
5044 log_error("Invalid number of arguments.");
5045 return -EINVAL;
5046 }
5047
5048 break;
5049
5050 case MORE:
5051 if (left < verbs[i].argc) {
5052 log_error("Too few arguments.");
5053 return -EINVAL;
5054 }
5055
5056 break;
5057
5058 case LESS:
5059 if (left > verbs[i].argc) {
5060 log_error("Too many arguments.");
5061 return -EINVAL;
5062 }
5063
5064 break;
5065
5066 default:
5067 assert_not_reached("Unknown comparison operator.");
5068 }
5069
5070 /* Require a bus connection for all operations but
5071 * enable/disable */
5072 if (!streq(verbs[i].verb, "enable") &&
5073 !streq(verbs[i].verb, "disable") &&
5074 !streq(verbs[i].verb, "is-enabled") &&
5075 !streq(verbs[i].verb, "list-unit-files") &&
5076 !streq(verbs[i].verb, "reenable") &&
5077 !streq(verbs[i].verb, "preset") &&
5078 !streq(verbs[i].verb, "mask") &&
5079 !streq(verbs[i].verb, "unmask") &&
5080 !streq(verbs[i].verb, "link")) {
5081
5082 if (running_in_chroot() > 0) {
5083 log_info("Running in chroot, ignoring request.");
5084 return 0;
5085 }
5086
5087 if (((!streq(verbs[i].verb, "reboot") &&
5088 !streq(verbs[i].verb, "halt") &&
5089 !streq(verbs[i].verb, "poweroff")) || arg_force <= 0) && !bus) {
5090 log_error("Failed to get D-Bus connection: %s",
5091 dbus_error_is_set(error) ? error->message : "No connection to service manager.");
5092 return -EIO;
5093 }
5094
5095 } else {
5096
5097 if (!bus && !avoid_bus()) {
5098 log_error("Failed to get D-Bus connection: %s",
5099 dbus_error_is_set(error) ? error->message : "No connection to service manager.");
5100 return -EIO;
5101 }
5102 }
5103
5104 return verbs[i].dispatch(bus, argv + optind);
5105 }
5106
5107 static int send_shutdownd(usec_t t, char mode, bool dry_run, bool warn, const char *message) {
5108 int fd;
5109 struct msghdr msghdr;
5110 struct iovec iovec[2];
5111 union sockaddr_union sockaddr;
5112 struct sd_shutdown_command c;
5113
5114 fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0);
5115 if (fd < 0)
5116 return -errno;
5117
5118 zero(c);
5119 c.usec = t;
5120 c.mode = mode;
5121 c.dry_run = dry_run;
5122 c.warn_wall = warn;
5123
5124 zero(sockaddr);
5125 sockaddr.sa.sa_family = AF_UNIX;
5126 strncpy(sockaddr.un.sun_path, "/run/systemd/shutdownd", sizeof(sockaddr.un.sun_path));
5127
5128 zero(msghdr);
5129 msghdr.msg_name = &sockaddr;
5130 msghdr.msg_namelen = offsetof(struct sockaddr_un, sun_path) + sizeof("/run/systemd/shutdownd") - 1;
5131
5132 zero(iovec);
5133 iovec[0].iov_base = (char*) &c;
5134 iovec[0].iov_len = offsetof(struct sd_shutdown_command, wall_message);
5135
5136 if (isempty(message))
5137 msghdr.msg_iovlen = 1;
5138 else {
5139 iovec[1].iov_base = (char*) message;
5140 iovec[1].iov_len = strlen(message);
5141 msghdr.msg_iovlen = 2;
5142 }
5143 msghdr.msg_iov = iovec;
5144
5145 if (sendmsg(fd, &msghdr, MSG_NOSIGNAL) < 0) {
5146 close_nointr_nofail(fd);
5147 return -errno;
5148 }
5149
5150 close_nointr_nofail(fd);
5151 return 0;
5152 }
5153
5154 static int reload_with_fallback(DBusConnection *bus) {
5155
5156 if (bus) {
5157 /* First, try systemd via D-Bus. */
5158 if (daemon_reload(bus, NULL) >= 0)
5159 return 0;
5160 }
5161
5162 /* Nothing else worked, so let's try signals */
5163 assert(arg_action == ACTION_RELOAD || arg_action == ACTION_REEXEC);
5164
5165 if (kill(1, arg_action == ACTION_RELOAD ? SIGHUP : SIGTERM) < 0) {
5166 log_error("kill() failed: %m");
5167 return -errno;
5168 }
5169
5170 return 0;
5171 }
5172
5173 static int start_with_fallback(DBusConnection *bus) {
5174
5175 if (bus) {
5176 /* First, try systemd via D-Bus. */
5177 if (start_unit(bus, NULL) >= 0)
5178 goto done;
5179 }
5180
5181 /* Hmm, talking to systemd via D-Bus didn't work. Then
5182 * let's try to talk to Upstart via D-Bus. */
5183 if (talk_upstart() > 0)
5184 goto done;
5185
5186 /* Nothing else worked, so let's try
5187 * /dev/initctl */
5188 if (talk_initctl() > 0)
5189 goto done;
5190
5191 log_error("Failed to talk to init daemon.");
5192 return -EIO;
5193
5194 done:
5195 warn_wall(arg_action);
5196 return 0;
5197 }
5198
5199 static _noreturn_ void halt_now(enum action a) {
5200
5201 /* Make sure C-A-D is handled by the kernel from this
5202 * point on... */
5203 reboot(RB_ENABLE_CAD);
5204
5205 switch (a) {
5206
5207 case ACTION_HALT:
5208 log_info("Halting.");
5209 reboot(RB_HALT_SYSTEM);
5210 break;
5211
5212 case ACTION_POWEROFF:
5213 log_info("Powering off.");
5214 reboot(RB_POWER_OFF);
5215 break;
5216
5217 case ACTION_REBOOT:
5218 log_info("Rebooting.");
5219 reboot(RB_AUTOBOOT);
5220 break;
5221
5222 default:
5223 assert_not_reached("Unknown halt action.");
5224 }
5225
5226 assert_not_reached("Uh? This shouldn't happen.");
5227 }
5228
5229 static int halt_main(DBusConnection *bus) {
5230 int r;
5231
5232 if (geteuid() != 0) {
5233 /* Try logind if we are a normal user and no special
5234 * mode applies. Maybe PolicyKit allows us to shutdown
5235 * the machine. */
5236
5237 if (arg_when <= 0 &&
5238 !arg_dry &&
5239 !arg_force &&
5240 (arg_action == ACTION_POWEROFF ||
5241 arg_action == ACTION_REBOOT)) {
5242 r = reboot_with_logind(bus, arg_action);
5243 if (r >= 0)
5244 return r;
5245 }
5246
5247 log_error("Must be root.");
5248 return -EPERM;
5249 }
5250
5251 if (arg_when > 0) {
5252 char *m;
5253
5254 m = strv_join(arg_wall, " ");
5255 r = send_shutdownd(arg_when,
5256 arg_action == ACTION_HALT ? 'H' :
5257 arg_action == ACTION_POWEROFF ? 'P' :
5258 arg_action == ACTION_KEXEC ? 'K' :
5259 'r',
5260 arg_dry,
5261 !arg_no_wall,
5262 m);
5263 free(m);
5264
5265 if (r < 0)
5266 log_warning("Failed to talk to shutdownd, proceeding with immediate shutdown: %s", strerror(-r));
5267 else {
5268 char date[FORMAT_TIMESTAMP_MAX];
5269
5270 log_info("Shutdown scheduled for %s, use 'shutdown -c' to cancel.",
5271 format_timestamp(date, sizeof(date), arg_when));
5272 return 0;
5273 }
5274 }
5275
5276 if (!arg_dry && !arg_force)
5277 return start_with_fallback(bus);
5278
5279 if (!arg_no_wtmp) {
5280 if (sd_booted() > 0)
5281 log_debug("Not writing utmp record, assuming that systemd-update-utmp is used.");
5282 else {
5283 r = utmp_put_shutdown();
5284 if (r < 0)
5285 log_warning("Failed to write utmp record: %s", strerror(-r));
5286 }
5287 }
5288
5289 if (arg_dry)
5290 return 0;
5291
5292 halt_now(arg_action);
5293 /* We should never reach this. */
5294 return -ENOSYS;
5295 }
5296
5297 static int runlevel_main(void) {
5298 int r, runlevel, previous;
5299
5300 r = utmp_get_runlevel(&runlevel, &previous);
5301 if (r < 0) {
5302 puts("unknown");
5303 return r;
5304 }
5305
5306 printf("%c %c\n",
5307 previous <= 0 ? 'N' : previous,
5308 runlevel <= 0 ? 'N' : runlevel);
5309
5310 return 0;
5311 }
5312
5313 int main(int argc, char*argv[]) {
5314 int r, retval = EXIT_FAILURE;
5315 DBusConnection *bus = NULL;
5316 DBusError error;
5317
5318 dbus_error_init(&error);
5319
5320 setlocale(LC_ALL, "");
5321 log_parse_environment();
5322 log_open();
5323
5324 r = parse_argv(argc, argv);
5325 if (r < 0)
5326 goto finish;
5327 else if (r == 0) {
5328 retval = EXIT_SUCCESS;
5329 goto finish;
5330 }
5331
5332 /* /sbin/runlevel doesn't need to communicate via D-Bus, so
5333 * let's shortcut this */
5334 if (arg_action == ACTION_RUNLEVEL) {
5335 r = runlevel_main();
5336 retval = r < 0 ? EXIT_FAILURE : r;
5337 goto finish;
5338 }
5339
5340 if (running_in_chroot() > 0 && arg_action != ACTION_SYSTEMCTL) {
5341 log_info("Running in chroot, ignoring request.");
5342 retval = 0;
5343 goto finish;
5344 }
5345
5346 if (!avoid_bus()) {
5347 if (arg_transport == TRANSPORT_NORMAL)
5348 bus_connect(arg_scope == UNIT_FILE_SYSTEM ? DBUS_BUS_SYSTEM : DBUS_BUS_SESSION, &bus, &private_bus, &error);
5349 else if (arg_transport == TRANSPORT_POLKIT) {
5350 bus_connect_system_polkit(&bus, &error);
5351 private_bus = false;
5352 } else if (arg_transport == TRANSPORT_SSH) {
5353 bus_connect_system_ssh(NULL, arg_host, &bus, &error);
5354 private_bus = false;
5355 } else
5356 assert_not_reached("Uh, invalid transport...");
5357 }
5358
5359 switch (arg_action) {
5360
5361 case ACTION_SYSTEMCTL:
5362 r = systemctl_main(bus, argc, argv, &error);
5363 break;
5364
5365 case ACTION_HALT:
5366 case ACTION_POWEROFF:
5367 case ACTION_REBOOT:
5368 case ACTION_KEXEC:
5369 r = halt_main(bus);
5370 break;
5371
5372 case ACTION_RUNLEVEL2:
5373 case ACTION_RUNLEVEL3:
5374 case ACTION_RUNLEVEL4:
5375 case ACTION_RUNLEVEL5:
5376 case ACTION_RESCUE:
5377 case ACTION_EMERGENCY:
5378 case ACTION_DEFAULT:
5379 r = start_with_fallback(bus);
5380 break;
5381
5382 case ACTION_RELOAD:
5383 case ACTION_REEXEC:
5384 r = reload_with_fallback(bus);
5385 break;
5386
5387 case ACTION_CANCEL_SHUTDOWN: {
5388 char *m = NULL;
5389
5390 if (arg_wall) {
5391 m = strv_join(arg_wall, " ");
5392 if (!m) {
5393 retval = EXIT_FAILURE;
5394 goto finish;
5395 }
5396 }
5397 r = send_shutdownd(arg_when, SD_SHUTDOWN_NONE, false, !arg_no_wall, m);
5398 if (r < 0)
5399 log_warning("Failed to talk to shutdownd, shutdown hasn't been cancelled: %s", strerror(-r));
5400 free(m);
5401 break;
5402 }
5403
5404 case ACTION_INVALID:
5405 case ACTION_RUNLEVEL:
5406 default:
5407 assert_not_reached("Unknown action");
5408 }
5409
5410 retval = r < 0 ? EXIT_FAILURE : r;
5411
5412 finish:
5413 if (bus) {
5414 dbus_connection_flush(bus);
5415 dbus_connection_close(bus);
5416 dbus_connection_unref(bus);
5417 }
5418
5419 dbus_error_free(&error);
5420
5421 dbus_shutdown();
5422
5423 strv_free(arg_property);
5424
5425 pager_close();
5426 ask_password_agent_close();
5427 polkit_agent_close();
5428
5429 return retval;
5430 }
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