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systemctl: style fixes for the previous patch
[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 <stdbool.h>
26 #include <string.h>
27 #include <errno.h>
28 #include <sys/ioctl.h>
29 #include <termios.h>
30 #include <unistd.h>
31 #include <fcntl.h>
32 #include <sys/socket.h>
33 #include <sys/stat.h>
34 #include <stddef.h>
35 #include <sys/prctl.h>
36 #include <dbus/dbus.h>
37
38 #include <systemd/sd-daemon.h>
39 #include <systemd/sd-shutdown.h>
40
41 #include "log.h"
42 #include "util.h"
43 #include "macro.h"
44 #include "set.h"
45 #include "utmp-wtmp.h"
46 #include "special.h"
47 #include "initreq.h"
48 #include "path-util.h"
49 #include "strv.h"
50 #include "dbus-common.h"
51 #include "cgroup-show.h"
52 #include "cgroup-util.h"
53 #include "list.h"
54 #include "path-lookup.h"
55 #include "conf-parser.h"
56 #include "exit-status.h"
57 #include "bus-errors.h"
58 #include "build.h"
59 #include "unit-name.h"
60 #include "pager.h"
61 #include "spawn-ask-password-agent.h"
62 #include "spawn-polkit-agent.h"
63 #include "install.h"
64 #include "logs-show.h"
65 #include "path-util.h"
66
67 static const char *arg_type = NULL;
68 static char **arg_property = NULL;
69 static bool arg_all = false;
70 static const char *arg_job_mode = "replace";
71 static UnitFileScope arg_scope = UNIT_FILE_SYSTEM;
72 static bool arg_no_block = false;
73 static bool arg_no_legend = false;
74 static bool arg_no_pager = false;
75 static bool arg_no_wtmp = false;
76 static bool arg_no_sync = false;
77 static bool arg_no_wall = false;
78 static bool arg_no_reload = false;
79 static bool arg_dry = false;
80 static bool arg_quiet = false;
81 static bool arg_full = false;
82 static int arg_force = 0;
83 static bool arg_ask_password = true;
84 static bool arg_failed = false;
85 static bool arg_runtime = false;
86 static char **arg_wall = NULL;
87 static const char *arg_kill_who = NULL;
88 static const char *arg_kill_mode = NULL;
89 static int arg_signal = SIGTERM;
90 static const char *arg_root = NULL;
91 static usec_t arg_when = 0;
92 static enum action {
93 ACTION_INVALID,
94 ACTION_SYSTEMCTL,
95 ACTION_HALT,
96 ACTION_POWEROFF,
97 ACTION_REBOOT,
98 ACTION_KEXEC,
99 ACTION_EXIT,
100 ACTION_SUSPEND,
101 ACTION_HIBERNATE,
102 ACTION_RUNLEVEL2,
103 ACTION_RUNLEVEL3,
104 ACTION_RUNLEVEL4,
105 ACTION_RUNLEVEL5,
106 ACTION_RESCUE,
107 ACTION_EMERGENCY,
108 ACTION_DEFAULT,
109 ACTION_RELOAD,
110 ACTION_REEXEC,
111 ACTION_RUNLEVEL,
112 ACTION_CANCEL_SHUTDOWN,
113 _ACTION_MAX
114 } arg_action = ACTION_SYSTEMCTL;
115 static enum dot {
116 DOT_ALL,
117 DOT_ORDER,
118 DOT_REQUIRE
119 } arg_dot = DOT_ALL;
120 static enum transport {
121 TRANSPORT_NORMAL,
122 TRANSPORT_SSH,
123 TRANSPORT_POLKIT
124 } arg_transport = TRANSPORT_NORMAL;
125 static const char *arg_host = NULL;
126 static bool arg_follow = false;
127 static unsigned arg_lines = 10;
128 static OutputMode arg_output = OUTPUT_SHORT;
129
130 static bool private_bus = false;
131
132 static int daemon_reload(DBusConnection *bus, char **args);
133 static void halt_now(enum action a);
134
135 static bool on_tty(void) {
136 static int t = -1;
137
138 /* Note that this is invoked relatively early, before we start
139 * the pager. That means the value we return reflects whether
140 * we originally were started on a tty, not if we currently
141 * are. But this is intended, since we want colour and so on
142 * when run in our own pager. */
143
144 if (_unlikely_(t < 0))
145 t = isatty(STDOUT_FILENO) > 0;
146
147 return t;
148 }
149
150 static void pager_open_if_enabled(void) {
151
152 /* Cache result before we open the pager */
153 on_tty();
154
155 if (arg_no_pager)
156 return;
157
158 pager_open();
159 }
160
161 static void ask_password_agent_open_if_enabled(void) {
162
163 /* Open the password agent as a child process if necessary */
164
165 if (!arg_ask_password)
166 return;
167
168 if (arg_scope != UNIT_FILE_SYSTEM)
169 return;
170
171 ask_password_agent_open();
172 }
173
174 #ifdef HAVE_LOGIND
175 static void polkit_agent_open_if_enabled(void) {
176
177 /* Open the polkit agent as a child process if necessary */
178
179 if (!arg_ask_password)
180 return;
181
182 if (arg_scope != UNIT_FILE_SYSTEM)
183 return;
184
185 polkit_agent_open();
186 }
187 #endif
188
189 static const char *ansi_highlight_red(bool b) {
190
191 if (!on_tty())
192 return "";
193
194 return b ? ANSI_HIGHLIGHT_RED_ON : ANSI_HIGHLIGHT_OFF;
195 }
196
197 static const char *ansi_highlight_green(bool b) {
198
199 if (!on_tty())
200 return "";
201
202 return b ? ANSI_HIGHLIGHT_GREEN_ON : ANSI_HIGHLIGHT_OFF;
203 }
204
205 static bool error_is_no_service(const DBusError *error) {
206 assert(error);
207
208 if (!dbus_error_is_set(error))
209 return false;
210
211 if (dbus_error_has_name(error, DBUS_ERROR_NAME_HAS_NO_OWNER))
212 return true;
213
214 if (dbus_error_has_name(error, DBUS_ERROR_SERVICE_UNKNOWN))
215 return true;
216
217 return startswith(error->name, "org.freedesktop.DBus.Error.Spawn.");
218 }
219
220 static int translate_bus_error_to_exit_status(int r, const DBusError *error) {
221 assert(error);
222
223 if (!dbus_error_is_set(error))
224 return r;
225
226 if (dbus_error_has_name(error, DBUS_ERROR_ACCESS_DENIED) ||
227 dbus_error_has_name(error, BUS_ERROR_ONLY_BY_DEPENDENCY) ||
228 dbus_error_has_name(error, BUS_ERROR_NO_ISOLATION) ||
229 dbus_error_has_name(error, BUS_ERROR_TRANSACTION_IS_DESTRUCTIVE))
230 return EXIT_NOPERMISSION;
231
232 if (dbus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT))
233 return EXIT_NOTINSTALLED;
234
235 if (dbus_error_has_name(error, BUS_ERROR_JOB_TYPE_NOT_APPLICABLE) ||
236 dbus_error_has_name(error, BUS_ERROR_NOT_SUPPORTED))
237 return EXIT_NOTIMPLEMENTED;
238
239 if (dbus_error_has_name(error, BUS_ERROR_LOAD_FAILED))
240 return EXIT_NOTCONFIGURED;
241
242 if (r != 0)
243 return r;
244
245 return EXIT_FAILURE;
246 }
247
248 static void warn_wall(enum action a) {
249 static const char *table[_ACTION_MAX] = {
250 [ACTION_HALT] = "The system is going down for system halt NOW!",
251 [ACTION_REBOOT] = "The system is going down for reboot NOW!",
252 [ACTION_POWEROFF] = "The system is going down for power-off NOW!",
253 [ACTION_KEXEC] = "The system is going down for kexec reboot NOW!",
254 [ACTION_RESCUE] = "The system is going down to rescue mode NOW!",
255 [ACTION_EMERGENCY] = "The system is going down to emergency mode NOW!"
256 };
257
258 if (arg_no_wall)
259 return;
260
261 if (arg_wall) {
262 char *p;
263
264 p = strv_join(arg_wall, " ");
265 if (!p) {
266 log_error("Failed to join strings.");
267 return;
268 }
269
270 if (*p) {
271 utmp_wall(p, NULL);
272 free(p);
273 return;
274 }
275
276 free(p);
277 }
278
279 if (!table[a])
280 return;
281
282 utmp_wall(table[a], NULL);
283 }
284
285 static bool avoid_bus(void) {
286
287 if (running_in_chroot() > 0)
288 return true;
289
290 if (sd_booted() <= 0)
291 return true;
292
293 if (!isempty(arg_root))
294 return true;
295
296 if (arg_scope == UNIT_FILE_GLOBAL)
297 return true;
298
299 return false;
300 }
301
302 struct unit_info {
303 const char *id;
304 const char *description;
305 const char *load_state;
306 const char *active_state;
307 const char *sub_state;
308 const char *following;
309 const char *unit_path;
310 uint32_t job_id;
311 const char *job_type;
312 const char *job_path;
313 };
314
315 static int compare_unit_info(const void *a, const void *b) {
316 const char *d1, *d2;
317 const struct unit_info *u = a, *v = b;
318
319 d1 = strrchr(u->id, '.');
320 d2 = strrchr(v->id, '.');
321
322 if (d1 && d2) {
323 int r;
324
325 if ((r = strcasecmp(d1, d2)) != 0)
326 return r;
327 }
328
329 return strcasecmp(u->id, v->id);
330 }
331
332 static bool output_show_unit(const struct unit_info *u) {
333 const char *dot;
334
335 if (arg_failed)
336 return streq(u->active_state, "failed");
337
338 return (!arg_type || ((dot = strrchr(u->id, '.')) &&
339 streq(dot+1, arg_type))) &&
340 (arg_all || !(streq(u->active_state, "inactive") || u->following[0]) || u->job_id > 0);
341 }
342
343 static void output_units_list(const struct unit_info *unit_infos, unsigned c) {
344 unsigned id_len, max_id_len, active_len, sub_len, job_len, desc_len, n_shown = 0;
345 const struct unit_info *u;
346
347 max_id_len = sizeof("UNIT")-1;
348 active_len = sizeof("ACTIVE")-1;
349 sub_len = sizeof("SUB")-1;
350 job_len = sizeof("JOB")-1;
351 desc_len = 0;
352
353 for (u = unit_infos; u < unit_infos + c; u++) {
354 if (!output_show_unit(u))
355 continue;
356
357 max_id_len = MAX(max_id_len, strlen(u->id));
358 active_len = MAX(active_len, strlen(u->active_state));
359 sub_len = MAX(sub_len, strlen(u->sub_state));
360 if (u->job_id != 0)
361 job_len = MAX(job_len, strlen(u->job_type));
362 }
363
364 if (!arg_full) {
365 unsigned basic_len;
366 id_len = MIN(max_id_len, 25);
367 basic_len = 5 + id_len + 6 + active_len + sub_len + job_len;
368 if (basic_len < (unsigned) columns()) {
369 unsigned extra_len, incr;
370 extra_len = columns() - basic_len;
371 /* Either UNIT already got 25, or is fully satisfied.
372 * Grant up to 25 to DESC now. */
373 incr = MIN(extra_len, 25);
374 desc_len += incr;
375 extra_len -= incr;
376 /* split the remaining space between UNIT and DESC,
377 * but do not give UNIT more than it needs. */
378 if (extra_len > 0) {
379 incr = MIN(extra_len / 2, max_id_len - id_len);
380 id_len += incr;
381 desc_len += extra_len - incr;
382 }
383 }
384 } else
385 id_len = max_id_len;
386
387 if (!arg_no_legend) {
388 printf("%-*s %-6s %-*s %-*s %-*s ", id_len, "UNIT", "LOAD",
389 active_len, "ACTIVE", sub_len, "SUB", job_len, "JOB");
390 if (!arg_full && arg_no_pager)
391 printf("%.*s\n", desc_len, "DESCRIPTION");
392 else
393 printf("%s\n", "DESCRIPTION");
394 }
395
396 for (u = unit_infos; u < unit_infos + c; u++) {
397 char *e;
398 const char *on_loaded, *off_loaded;
399 const char *on_active, *off_active;
400
401 if (!output_show_unit(u))
402 continue;
403
404 n_shown++;
405
406 if (streq(u->load_state, "error")) {
407 on_loaded = ansi_highlight_red(true);
408 off_loaded = ansi_highlight_red(false);
409 } else
410 on_loaded = off_loaded = "";
411
412 if (streq(u->active_state, "failed")) {
413 on_active = ansi_highlight_red(true);
414 off_active = ansi_highlight_red(false);
415 } else
416 on_active = off_active = "";
417
418 e = arg_full ? NULL : ellipsize(u->id, id_len, 33);
419
420 printf("%-*s %s%-6s%s %s%-*s %-*s%s %-*s ",
421 id_len, e ? e : u->id,
422 on_loaded, u->load_state, off_loaded,
423 on_active, active_len, u->active_state,
424 sub_len, u->sub_state, off_active,
425 job_len, u->job_id ? u->job_type : "");
426 if (!arg_full && arg_no_pager)
427 printf("%.*s\n", desc_len, u->description);
428 else
429 printf("%s\n", u->description);
430
431 free(e);
432 }
433
434 if (!arg_no_legend) {
435 printf("\nLOAD = Reflects whether the unit definition was properly loaded.\n"
436 "ACTIVE = The high-level unit activation state, i.e. generalization of SUB.\n"
437 "SUB = The low-level unit activation state, values depend on unit type.\n"
438 "JOB = Pending job for the unit.\n");
439
440 if (arg_all)
441 printf("\n%u units listed.\n", n_shown);
442 else
443 printf("\n%u units listed. Pass --all to see inactive units, too.\n", n_shown);
444 }
445 }
446
447 static int list_units(DBusConnection *bus, char **args) {
448 DBusMessage *m = NULL, *reply = NULL;
449 DBusError error;
450 int r;
451 DBusMessageIter iter, sub, sub2;
452 unsigned c = 0, n_units = 0;
453 struct unit_info *unit_infos = NULL;
454
455 dbus_error_init(&error);
456
457 assert(bus);
458
459 pager_open_if_enabled();
460
461 if (!(m = dbus_message_new_method_call(
462 "org.freedesktop.systemd1",
463 "/org/freedesktop/systemd1",
464 "org.freedesktop.systemd1.Manager",
465 "ListUnits"))) {
466 log_error("Could not allocate message.");
467 return -ENOMEM;
468 }
469
470 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
471 log_error("Failed to issue method call: %s", bus_error_message(&error));
472 r = -EIO;
473 goto finish;
474 }
475
476 if (!dbus_message_iter_init(reply, &iter) ||
477 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
478 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
479 log_error("Failed to parse reply.");
480 r = -EIO;
481 goto finish;
482 }
483
484 dbus_message_iter_recurse(&iter, &sub);
485
486 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
487 struct unit_info *u;
488
489 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
490 log_error("Failed to parse reply.");
491 r = -EIO;
492 goto finish;
493 }
494
495 if (c >= n_units) {
496 struct unit_info *w;
497
498 n_units = MAX(2*c, 16);
499 w = realloc(unit_infos, sizeof(struct unit_info) * n_units);
500
501 if (!w) {
502 log_error("Failed to allocate unit array.");
503 r = -ENOMEM;
504 goto finish;
505 }
506
507 unit_infos = w;
508 }
509
510 u = unit_infos+c;
511
512 dbus_message_iter_recurse(&sub, &sub2);
513
514 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->id, true) < 0 ||
515 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->description, true) < 0 ||
516 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->load_state, true) < 0 ||
517 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->active_state, true) < 0 ||
518 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->sub_state, true) < 0 ||
519 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->following, true) < 0 ||
520 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &u->unit_path, true) < 0 ||
521 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &u->job_id, true) < 0 ||
522 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->job_type, true) < 0 ||
523 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &u->job_path, false) < 0) {
524 log_error("Failed to parse reply.");
525 r = -EIO;
526 goto finish;
527 }
528
529 dbus_message_iter_next(&sub);
530 c++;
531 }
532
533 if (c > 0) {
534 qsort(unit_infos, c, sizeof(struct unit_info), compare_unit_info);
535 output_units_list(unit_infos, c);
536 }
537
538 r = 0;
539
540 finish:
541 if (m)
542 dbus_message_unref(m);
543
544 if (reply)
545 dbus_message_unref(reply);
546
547 free(unit_infos);
548
549 dbus_error_free(&error);
550
551 return r;
552 }
553
554 static int compare_unit_file_list(const void *a, const void *b) {
555 const char *d1, *d2;
556 const UnitFileList *u = a, *v = b;
557
558 d1 = strrchr(u->path, '.');
559 d2 = strrchr(v->path, '.');
560
561 if (d1 && d2) {
562 int r;
563
564 r = strcasecmp(d1, d2);
565 if (r != 0)
566 return r;
567 }
568
569 return strcasecmp(path_get_file_name(u->path), path_get_file_name(v->path));
570 }
571
572 static bool output_show_unit_file(const UnitFileList *u) {
573 const char *dot;
574
575 return !arg_type || ((dot = strrchr(u->path, '.')) && streq(dot+1, arg_type));
576 }
577
578 static void output_unit_file_list(const UnitFileList *units, unsigned c) {
579 unsigned max_id_len, id_cols, state_cols, n_shown = 0;
580 const UnitFileList *u;
581
582 max_id_len = sizeof("UNIT FILE")-1;
583 state_cols = sizeof("STATE")-1;
584 for (u = units; u < units + c; u++) {
585 if (!output_show_unit_file(u))
586 continue;
587
588 max_id_len = MAX(max_id_len, strlen(path_get_file_name(u->path)));
589 state_cols = MAX(state_cols, strlen(unit_file_state_to_string(u->state)));
590 }
591
592 if (!arg_full) {
593 unsigned basic_cols;
594 id_cols = MIN(max_id_len, 25);
595 basic_cols = 1 + id_cols + state_cols;
596 if (basic_cols < (unsigned) columns())
597 id_cols += MIN(columns() - basic_cols, max_id_len - id_cols);
598 } else
599 id_cols = max_id_len;
600
601 if (!arg_no_legend)
602 printf("%-*s %-*s\n", id_cols, "UNIT FILE", state_cols, "STATE");
603
604 for (u = units; u < units + c; u++) {
605 char *e;
606 const char *on, *off;
607 const char *id;
608
609 if (!output_show_unit_file(u))
610 continue;
611
612 n_shown++;
613
614 if (u->state == UNIT_FILE_MASKED ||
615 u->state == UNIT_FILE_MASKED_RUNTIME ||
616 u->state == UNIT_FILE_DISABLED) {
617 on = ansi_highlight_red(true);
618 off = ansi_highlight_red(false);
619 } else if (u->state == UNIT_FILE_ENABLED) {
620 on = ansi_highlight_green(true);
621 off = ansi_highlight_green(false);
622 } else
623 on = off = "";
624
625 id = path_get_file_name(u->path);
626
627 e = arg_full ? NULL : ellipsize(id, id_cols, 33);
628
629 printf("%-*s %s%-*s%s\n",
630 id_cols, e ? e : id,
631 on, state_cols, unit_file_state_to_string(u->state), off);
632
633 free(e);
634 }
635
636 if (!arg_no_legend)
637 printf("\n%u unit files listed.\n", n_shown);
638 }
639
640 static int list_unit_files(DBusConnection *bus, char **args) {
641 DBusMessage *m = NULL, *reply = NULL;
642 DBusError error;
643 int r;
644 DBusMessageIter iter, sub, sub2;
645 unsigned c = 0, n_units = 0;
646 UnitFileList *units = NULL;
647
648 dbus_error_init(&error);
649
650 pager_open_if_enabled();
651
652 if (avoid_bus()) {
653 Hashmap *h;
654 UnitFileList *u;
655 Iterator i;
656
657 h = hashmap_new(string_hash_func, string_compare_func);
658 if (!h) {
659 log_error("Out of memory");
660 return -ENOMEM;
661 }
662
663 r = unit_file_get_list(arg_scope, arg_root, h);
664 if (r < 0) {
665 unit_file_list_free(h);
666 log_error("Failed to get unit file list: %s", strerror(-r));
667 return r;
668 }
669
670 n_units = hashmap_size(h);
671 units = new(UnitFileList, n_units);
672 if (!units) {
673 unit_file_list_free(h);
674 log_error("Out of memory");
675 return -ENOMEM;
676 }
677
678 HASHMAP_FOREACH(u, h, i) {
679 memcpy(units + c++, u, sizeof(UnitFileList));
680 free(u);
681 }
682
683 hashmap_free(h);
684 } else {
685 assert(bus);
686
687 m = dbus_message_new_method_call(
688 "org.freedesktop.systemd1",
689 "/org/freedesktop/systemd1",
690 "org.freedesktop.systemd1.Manager",
691 "ListUnitFiles");
692 if (!m) {
693 log_error("Could not allocate message.");
694 return -ENOMEM;
695 }
696
697 reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
698 if (!reply) {
699 log_error("Failed to issue method call: %s", bus_error_message(&error));
700 r = -EIO;
701 goto finish;
702 }
703
704 if (!dbus_message_iter_init(reply, &iter) ||
705 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
706 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
707 log_error("Failed to parse reply.");
708 r = -EIO;
709 goto finish;
710 }
711
712 dbus_message_iter_recurse(&iter, &sub);
713
714 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
715 UnitFileList *u;
716 const char *state;
717
718 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
719 log_error("Failed to parse reply.");
720 r = -EIO;
721 goto finish;
722 }
723
724 if (c >= n_units) {
725 UnitFileList *w;
726
727 n_units = MAX(2*c, 16);
728 w = realloc(units, sizeof(struct UnitFileList) * n_units);
729
730 if (!w) {
731 log_error("Failed to allocate unit array.");
732 r = -ENOMEM;
733 goto finish;
734 }
735
736 units = w;
737 }
738
739 u = units+c;
740
741 dbus_message_iter_recurse(&sub, &sub2);
742
743 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->path, true) < 0 ||
744 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &state, false) < 0) {
745 log_error("Failed to parse reply.");
746 r = -EIO;
747 goto finish;
748 }
749
750 u->state = unit_file_state_from_string(state);
751
752 dbus_message_iter_next(&sub);
753 c++;
754 }
755 }
756
757 if (c > 0) {
758 qsort(units, c, sizeof(UnitFileList), compare_unit_file_list);
759 output_unit_file_list(units, c);
760 }
761
762 r = 0;
763
764 finish:
765 if (m)
766 dbus_message_unref(m);
767
768 if (reply)
769 dbus_message_unref(reply);
770
771 free(units);
772
773 dbus_error_free(&error);
774
775 return r;
776 }
777
778 static int dot_one_property(const char *name, const char *prop, DBusMessageIter *iter) {
779 static const char * const colors[] = {
780 "Requires", "[color=\"black\"]",
781 "RequiresOverridable", "[color=\"black\"]",
782 "Requisite", "[color=\"darkblue\"]",
783 "RequisiteOverridable", "[color=\"darkblue\"]",
784 "Wants", "[color=\"darkgrey\"]",
785 "Conflicts", "[color=\"red\"]",
786 "ConflictedBy", "[color=\"red\"]",
787 "After", "[color=\"green\"]"
788 };
789
790 const char *c = NULL;
791 unsigned i;
792
793 assert(name);
794 assert(prop);
795 assert(iter);
796
797 for (i = 0; i < ELEMENTSOF(colors); i += 2)
798 if (streq(colors[i], prop)) {
799 c = colors[i+1];
800 break;
801 }
802
803 if (!c)
804 return 0;
805
806 if (arg_dot != DOT_ALL)
807 if ((arg_dot == DOT_ORDER) != streq(prop, "After"))
808 return 0;
809
810 switch (dbus_message_iter_get_arg_type(iter)) {
811
812 case DBUS_TYPE_ARRAY:
813
814 if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRING) {
815 DBusMessageIter sub;
816
817 dbus_message_iter_recurse(iter, &sub);
818
819 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
820 const char *s;
821
822 assert(dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING);
823 dbus_message_iter_get_basic(&sub, &s);
824 printf("\t\"%s\"->\"%s\" %s;\n", name, s, c);
825
826 dbus_message_iter_next(&sub);
827 }
828
829 return 0;
830 }
831 }
832
833 return 0;
834 }
835
836 static int dot_one(DBusConnection *bus, const char *name, const char *path) {
837 DBusMessage *m = NULL, *reply = NULL;
838 const char *interface = "org.freedesktop.systemd1.Unit";
839 int r;
840 DBusError error;
841 DBusMessageIter iter, sub, sub2, sub3;
842
843 assert(bus);
844 assert(path);
845
846 dbus_error_init(&error);
847
848 if (!(m = dbus_message_new_method_call(
849 "org.freedesktop.systemd1",
850 path,
851 "org.freedesktop.DBus.Properties",
852 "GetAll"))) {
853 log_error("Could not allocate message.");
854 r = -ENOMEM;
855 goto finish;
856 }
857
858 if (!dbus_message_append_args(m,
859 DBUS_TYPE_STRING, &interface,
860 DBUS_TYPE_INVALID)) {
861 log_error("Could not append arguments to message.");
862 r = -ENOMEM;
863 goto finish;
864 }
865
866 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
867 log_error("Failed to issue method call: %s", bus_error_message(&error));
868 r = -EIO;
869 goto finish;
870 }
871
872 if (!dbus_message_iter_init(reply, &iter) ||
873 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
874 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_DICT_ENTRY) {
875 log_error("Failed to parse reply.");
876 r = -EIO;
877 goto finish;
878 }
879
880 dbus_message_iter_recurse(&iter, &sub);
881
882 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
883 const char *prop;
884
885 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_DICT_ENTRY) {
886 log_error("Failed to parse reply.");
887 r = -EIO;
888 goto finish;
889 }
890
891 dbus_message_iter_recurse(&sub, &sub2);
892
893 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &prop, true) < 0) {
894 log_error("Failed to parse reply.");
895 r = -EIO;
896 goto finish;
897 }
898
899 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT) {
900 log_error("Failed to parse reply.");
901 r = -EIO;
902 goto finish;
903 }
904
905 dbus_message_iter_recurse(&sub2, &sub3);
906
907 if (dot_one_property(name, prop, &sub3)) {
908 log_error("Failed to parse reply.");
909 r = -EIO;
910 goto finish;
911 }
912
913 dbus_message_iter_next(&sub);
914 }
915
916 r = 0;
917
918 finish:
919 if (m)
920 dbus_message_unref(m);
921
922 if (reply)
923 dbus_message_unref(reply);
924
925 dbus_error_free(&error);
926
927 return r;
928 }
929
930 static int dot(DBusConnection *bus, char **args) {
931 DBusMessage *m = NULL, *reply = NULL;
932 DBusError error;
933 int r;
934 DBusMessageIter iter, sub, sub2;
935
936 dbus_error_init(&error);
937
938 assert(bus);
939
940 if (!(m = dbus_message_new_method_call(
941 "org.freedesktop.systemd1",
942 "/org/freedesktop/systemd1",
943 "org.freedesktop.systemd1.Manager",
944 "ListUnits"))) {
945 log_error("Could not allocate message.");
946 return -ENOMEM;
947 }
948
949 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
950 log_error("Failed to issue method call: %s", bus_error_message(&error));
951 r = -EIO;
952 goto finish;
953 }
954
955 if (!dbus_message_iter_init(reply, &iter) ||
956 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
957 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
958 log_error("Failed to parse reply.");
959 r = -EIO;
960 goto finish;
961 }
962
963 printf("digraph systemd {\n");
964
965 dbus_message_iter_recurse(&iter, &sub);
966 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
967 const char *id, *description, *load_state, *active_state, *sub_state, *following, *unit_path;
968
969 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
970 log_error("Failed to parse reply.");
971 r = -EIO;
972 goto finish;
973 }
974
975 dbus_message_iter_recurse(&sub, &sub2);
976
977 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &id, true) < 0 ||
978 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &description, true) < 0 ||
979 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &load_state, true) < 0 ||
980 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &active_state, true) < 0 ||
981 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &sub_state, true) < 0 ||
982 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &following, true) < 0 ||
983 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &unit_path, true) < 0) {
984 log_error("Failed to parse reply.");
985 r = -EIO;
986 goto finish;
987 }
988
989 if ((r = dot_one(bus, id, unit_path)) < 0)
990 goto finish;
991
992 /* printf("\t\"%s\";\n", id); */
993 dbus_message_iter_next(&sub);
994 }
995
996 printf("}\n");
997
998 log_info(" Color legend: black = Requires\n"
999 " dark blue = Requisite\n"
1000 " dark grey = Wants\n"
1001 " red = Conflicts\n"
1002 " green = After\n");
1003
1004 if (on_tty())
1005 log_notice("-- You probably want to process this output with graphviz' dot tool.\n"
1006 "-- Try a shell pipeline like 'systemctl dot | dot -Tsvg > systemd.svg'!\n");
1007
1008 r = 0;
1009
1010 finish:
1011 if (m)
1012 dbus_message_unref(m);
1013
1014 if (reply)
1015 dbus_message_unref(reply);
1016
1017 dbus_error_free(&error);
1018
1019 return r;
1020 }
1021
1022 static int list_jobs(DBusConnection *bus, char **args) {
1023 DBusMessage *m = NULL, *reply = NULL;
1024 DBusError error;
1025 int r;
1026 DBusMessageIter iter, sub, sub2;
1027 unsigned k = 0;
1028
1029 dbus_error_init(&error);
1030
1031 assert(bus);
1032
1033 pager_open_if_enabled();
1034
1035 if (!(m = dbus_message_new_method_call(
1036 "org.freedesktop.systemd1",
1037 "/org/freedesktop/systemd1",
1038 "org.freedesktop.systemd1.Manager",
1039 "ListJobs"))) {
1040 log_error("Could not allocate message.");
1041 return -ENOMEM;
1042 }
1043
1044 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1045 log_error("Failed to issue method call: %s", bus_error_message(&error));
1046 r = -EIO;
1047 goto finish;
1048 }
1049
1050 if (!dbus_message_iter_init(reply, &iter) ||
1051 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
1052 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
1053 log_error("Failed to parse reply.");
1054 r = -EIO;
1055 goto finish;
1056 }
1057
1058 dbus_message_iter_recurse(&iter, &sub);
1059
1060 if (on_tty())
1061 printf("%4s %-25s %-15s %-7s\n", "JOB", "UNIT", "TYPE", "STATE");
1062
1063 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
1064 const char *name, *type, *state, *job_path, *unit_path;
1065 uint32_t id;
1066 char *e;
1067
1068 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
1069 log_error("Failed to parse reply.");
1070 r = -EIO;
1071 goto finish;
1072 }
1073
1074 dbus_message_iter_recurse(&sub, &sub2);
1075
1076 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &id, true) < 0 ||
1077 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0 ||
1078 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) < 0 ||
1079 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &state, true) < 0 ||
1080 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &job_path, true) < 0 ||
1081 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &unit_path, false) < 0) {
1082 log_error("Failed to parse reply.");
1083 r = -EIO;
1084 goto finish;
1085 }
1086
1087 e = arg_full ? NULL : ellipsize(name, 25, 33);
1088 printf("%4u %-25s %-15s %-7s\n", id, e ? e : name, type, state);
1089 free(e);
1090
1091 k++;
1092
1093 dbus_message_iter_next(&sub);
1094 }
1095
1096 if (on_tty())
1097 printf("\n%u jobs listed.\n", k);
1098
1099 r = 0;
1100
1101 finish:
1102 if (m)
1103 dbus_message_unref(m);
1104
1105 if (reply)
1106 dbus_message_unref(reply);
1107
1108 dbus_error_free(&error);
1109
1110 return r;
1111 }
1112
1113 static int load_unit(DBusConnection *bus, char **args) {
1114 DBusMessage *m = NULL;
1115 DBusError error;
1116 int r;
1117 char **name;
1118
1119 dbus_error_init(&error);
1120
1121 assert(bus);
1122 assert(args);
1123
1124 STRV_FOREACH(name, args+1) {
1125 DBusMessage *reply;
1126
1127 if (!(m = dbus_message_new_method_call(
1128 "org.freedesktop.systemd1",
1129 "/org/freedesktop/systemd1",
1130 "org.freedesktop.systemd1.Manager",
1131 "LoadUnit"))) {
1132 log_error("Could not allocate message.");
1133 r = -ENOMEM;
1134 goto finish;
1135 }
1136
1137 if (!dbus_message_append_args(m,
1138 DBUS_TYPE_STRING, name,
1139 DBUS_TYPE_INVALID)) {
1140 log_error("Could not append arguments to message.");
1141 r = -ENOMEM;
1142 goto finish;
1143 }
1144
1145 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1146 log_error("Failed to issue method call: %s", bus_error_message(&error));
1147 r = -EIO;
1148 goto finish;
1149 }
1150
1151 dbus_message_unref(m);
1152 dbus_message_unref(reply);
1153
1154 m = reply = NULL;
1155 }
1156
1157 r = 0;
1158
1159 finish:
1160 if (m)
1161 dbus_message_unref(m);
1162
1163 dbus_error_free(&error);
1164
1165 return r;
1166 }
1167
1168 static int cancel_job(DBusConnection *bus, char **args) {
1169 DBusMessage *m = NULL, *reply = NULL;
1170 DBusError error;
1171 int r;
1172 char **name;
1173
1174 dbus_error_init(&error);
1175
1176 assert(bus);
1177 assert(args);
1178
1179 if (strv_length(args) <= 1)
1180 return daemon_reload(bus, args);
1181
1182 STRV_FOREACH(name, args+1) {
1183 unsigned id;
1184 const char *path;
1185
1186 if (!(m = dbus_message_new_method_call(
1187 "org.freedesktop.systemd1",
1188 "/org/freedesktop/systemd1",
1189 "org.freedesktop.systemd1.Manager",
1190 "GetJob"))) {
1191 log_error("Could not allocate message.");
1192 r = -ENOMEM;
1193 goto finish;
1194 }
1195
1196 if ((r = safe_atou(*name, &id)) < 0) {
1197 log_error("Failed to parse job id: %s", strerror(-r));
1198 goto finish;
1199 }
1200
1201 assert_cc(sizeof(uint32_t) == sizeof(id));
1202 if (!dbus_message_append_args(m,
1203 DBUS_TYPE_UINT32, &id,
1204 DBUS_TYPE_INVALID)) {
1205 log_error("Could not append arguments to message.");
1206 r = -ENOMEM;
1207 goto finish;
1208 }
1209
1210 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1211 log_error("Failed to issue method call: %s", bus_error_message(&error));
1212 r = -EIO;
1213 goto finish;
1214 }
1215
1216 if (!dbus_message_get_args(reply, &error,
1217 DBUS_TYPE_OBJECT_PATH, &path,
1218 DBUS_TYPE_INVALID)) {
1219 log_error("Failed to parse reply: %s", bus_error_message(&error));
1220 r = -EIO;
1221 goto finish;
1222 }
1223
1224 dbus_message_unref(m);
1225 if (!(m = dbus_message_new_method_call(
1226 "org.freedesktop.systemd1",
1227 path,
1228 "org.freedesktop.systemd1.Job",
1229 "Cancel"))) {
1230 log_error("Could not allocate message.");
1231 r = -ENOMEM;
1232 goto finish;
1233 }
1234
1235 dbus_message_unref(reply);
1236 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1237 log_error("Failed to issue method call: %s", bus_error_message(&error));
1238 r = -EIO;
1239 goto finish;
1240 }
1241
1242 dbus_message_unref(m);
1243 dbus_message_unref(reply);
1244 m = reply = NULL;
1245 }
1246
1247 r = 0;
1248
1249 finish:
1250 if (m)
1251 dbus_message_unref(m);
1252
1253 if (reply)
1254 dbus_message_unref(reply);
1255
1256 dbus_error_free(&error);
1257
1258 return r;
1259 }
1260
1261 static bool need_daemon_reload(DBusConnection *bus, const char *unit) {
1262 DBusMessage *m = NULL, *reply = NULL;
1263 dbus_bool_t b = FALSE;
1264 DBusMessageIter iter, sub;
1265 const char
1266 *interface = "org.freedesktop.systemd1.Unit",
1267 *property = "NeedDaemonReload",
1268 *path;
1269
1270 /* We ignore all errors here, since this is used to show a warning only */
1271
1272 if (!(m = dbus_message_new_method_call(
1273 "org.freedesktop.systemd1",
1274 "/org/freedesktop/systemd1",
1275 "org.freedesktop.systemd1.Manager",
1276 "GetUnit")))
1277 goto finish;
1278
1279 if (!dbus_message_append_args(m,
1280 DBUS_TYPE_STRING, &unit,
1281 DBUS_TYPE_INVALID))
1282 goto finish;
1283
1284 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, NULL)))
1285 goto finish;
1286
1287 if (!dbus_message_get_args(reply, NULL,
1288 DBUS_TYPE_OBJECT_PATH, &path,
1289 DBUS_TYPE_INVALID))
1290 goto finish;
1291
1292 dbus_message_unref(m);
1293 if (!(m = dbus_message_new_method_call(
1294 "org.freedesktop.systemd1",
1295 path,
1296 "org.freedesktop.DBus.Properties",
1297 "Get")))
1298 goto finish;
1299
1300 if (!dbus_message_append_args(m,
1301 DBUS_TYPE_STRING, &interface,
1302 DBUS_TYPE_STRING, &property,
1303 DBUS_TYPE_INVALID)) {
1304 goto finish;
1305 }
1306
1307 dbus_message_unref(reply);
1308 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, NULL)))
1309 goto finish;
1310
1311 if (!dbus_message_iter_init(reply, &iter) ||
1312 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT)
1313 goto finish;
1314
1315 dbus_message_iter_recurse(&iter, &sub);
1316
1317 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_BOOLEAN)
1318 goto finish;
1319
1320 dbus_message_iter_get_basic(&sub, &b);
1321
1322 finish:
1323 if (m)
1324 dbus_message_unref(m);
1325
1326 if (reply)
1327 dbus_message_unref(reply);
1328
1329 return b;
1330 }
1331
1332 typedef struct WaitData {
1333 Set *set;
1334 char *result;
1335 } WaitData;
1336
1337 static DBusHandlerResult wait_filter(DBusConnection *connection, DBusMessage *message, void *data) {
1338 DBusError error;
1339 WaitData *d = data;
1340
1341 assert(connection);
1342 assert(message);
1343 assert(d);
1344
1345 dbus_error_init(&error);
1346
1347 log_debug("Got D-Bus request: %s.%s() on %s",
1348 dbus_message_get_interface(message),
1349 dbus_message_get_member(message),
1350 dbus_message_get_path(message));
1351
1352 if (dbus_message_is_signal(message, DBUS_INTERFACE_LOCAL, "Disconnected")) {
1353 log_error("Warning! D-Bus connection terminated.");
1354 dbus_connection_close(connection);
1355
1356 } else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "JobRemoved")) {
1357 uint32_t id;
1358 const char *path, *result, *unit;
1359 dbus_bool_t success = true;
1360
1361 if (dbus_message_get_args(message, &error,
1362 DBUS_TYPE_UINT32, &id,
1363 DBUS_TYPE_OBJECT_PATH, &path,
1364 DBUS_TYPE_STRING, &unit,
1365 DBUS_TYPE_STRING, &result,
1366 DBUS_TYPE_INVALID)) {
1367 char *p;
1368
1369 p = set_remove(d->set, (char*) path);
1370 free(p);
1371
1372 if (*result)
1373 d->result = strdup(result);
1374
1375 goto finish;
1376 }
1377 #ifndef LEGACY
1378 dbus_error_free(&error);
1379 if (dbus_message_get_args(message, &error,
1380 DBUS_TYPE_UINT32, &id,
1381 DBUS_TYPE_OBJECT_PATH, &path,
1382 DBUS_TYPE_STRING, &result,
1383 DBUS_TYPE_INVALID)) {
1384 char *p;
1385
1386 /* Compatibility with older systemd versions <
1387 * 183 during upgrades. This should be dropped
1388 * one day. */
1389 p = set_remove(d->set, (char*) path);
1390 free(p);
1391
1392 if (*result)
1393 d->result = strdup(result);
1394
1395 goto finish;
1396 }
1397
1398 dbus_error_free(&error);
1399 if (dbus_message_get_args(message, &error,
1400 DBUS_TYPE_UINT32, &id,
1401 DBUS_TYPE_OBJECT_PATH, &path,
1402 DBUS_TYPE_BOOLEAN, &success,
1403 DBUS_TYPE_INVALID)) {
1404 char *p;
1405
1406 /* Compatibility with older systemd versions <
1407 * 19 during upgrades. This should be dropped
1408 * one day */
1409
1410 p = set_remove(d->set, (char*) path);
1411 free(p);
1412
1413 if (!success)
1414 d->result = strdup("failed");
1415
1416 goto finish;
1417 }
1418 #endif
1419
1420 log_error("Failed to parse message: %s", bus_error_message(&error));
1421 }
1422
1423 finish:
1424 dbus_error_free(&error);
1425 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1426 }
1427
1428 static int enable_wait_for_jobs(DBusConnection *bus) {
1429 DBusError error;
1430
1431 assert(bus);
1432
1433 if (private_bus)
1434 return 0;
1435
1436 dbus_error_init(&error);
1437 dbus_bus_add_match(bus,
1438 "type='signal',"
1439 "sender='org.freedesktop.systemd1',"
1440 "interface='org.freedesktop.systemd1.Manager',"
1441 "member='JobRemoved',"
1442 "path='/org/freedesktop/systemd1'",
1443 &error);
1444
1445 if (dbus_error_is_set(&error)) {
1446 log_error("Failed to add match: %s", bus_error_message(&error));
1447 dbus_error_free(&error);
1448 return -EIO;
1449 }
1450
1451 /* This is slightly dirty, since we don't undo the match registrations. */
1452 return 0;
1453 }
1454
1455 static int wait_for_jobs(DBusConnection *bus, Set *s) {
1456 int r;
1457 WaitData d;
1458
1459 assert(bus);
1460 assert(s);
1461
1462 zero(d);
1463 d.set = s;
1464
1465 if (!dbus_connection_add_filter(bus, wait_filter, &d, NULL)) {
1466 log_error("Failed to add filter.");
1467 r = -ENOMEM;
1468 goto finish;
1469 }
1470
1471 while (!set_isempty(s) &&
1472 dbus_connection_read_write_dispatch(bus, -1))
1473 ;
1474
1475 if (!arg_quiet && d.result) {
1476 if (streq(d.result, "timeout"))
1477 log_error("Job timed out.");
1478 else if (streq(d.result, "canceled"))
1479 log_error("Job canceled.");
1480 else if (streq(d.result, "dependency"))
1481 log_error("A dependency job failed. See system journal for details.");
1482 else if (!streq(d.result, "done") && !streq(d.result, "skipped"))
1483 log_error("Job failed. See system journal and 'systemctl status' for details.");
1484 }
1485
1486 if (streq_ptr(d.result, "timeout"))
1487 r = -ETIME;
1488 else if (streq_ptr(d.result, "canceled"))
1489 r = -ECANCELED;
1490 else if (!streq_ptr(d.result, "done") && !streq_ptr(d.result, "skipped"))
1491 r = -EIO;
1492 else
1493 r = 0;
1494
1495 free(d.result);
1496
1497 finish:
1498 /* This is slightly dirty, since we don't undo the filter registration. */
1499
1500 return r;
1501 }
1502
1503 static int get_unit_path(
1504 DBusConnection *bus,
1505 const char *name,
1506 char **unit_path) {
1507
1508 DBusError error;
1509 DBusMessage *m = NULL, *reply = NULL;
1510 char *path;
1511 int r = 0;
1512
1513 assert(bus);
1514 assert(name);
1515 assert(unit_path);
1516
1517 dbus_error_init(&error);
1518
1519 m = dbus_message_new_method_call("org.freedesktop.systemd1",
1520 "/org/freedesktop/systemd1",
1521 "org.freedesktop.systemd1.Manager",
1522 "GetUnit");
1523 if (!m) {
1524 log_error("Could not allocate message.");
1525 r = -ENOMEM;
1526 goto finish;
1527 }
1528
1529 if (!dbus_message_append_args(m,
1530 DBUS_TYPE_STRING, &name,
1531 DBUS_TYPE_INVALID)) {
1532 log_error("Could not append arguments to message.");
1533 r = -ENOMEM;
1534 goto finish;
1535 }
1536
1537 reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
1538 if (!reply) {
1539 if (streq(error.name, BUS_ERROR_NO_SUCH_UNIT))
1540 r = -EINVAL;
1541 else {
1542 log_error("Failed to issue method call: %s", bus_error_message(&error));
1543 r = -EIO;
1544 }
1545 goto finish;
1546 }
1547
1548 if (!dbus_message_get_args(reply, &error,
1549 DBUS_TYPE_OBJECT_PATH, &path,
1550 DBUS_TYPE_INVALID)) {
1551 log_error("Failed to parse reply: %s", bus_error_message(&error));
1552 r = -EIO;
1553 goto finish;
1554 }
1555
1556 *unit_path = strdup(path);
1557 if (!(*unit_path)) {
1558 log_error("Failed to duplicate unit path");
1559 r = -ENOMEM;
1560 }
1561 finish:
1562 if (m)
1563 dbus_message_unref(m);
1564 if (reply)
1565 dbus_message_unref(reply);
1566
1567 dbus_error_free(&error);
1568
1569 return r;
1570 }
1571
1572 static int is_socket_listening(
1573 DBusConnection *bus,
1574 const char *socket_name) {
1575
1576 DBusError error;
1577 DBusMessage *m = NULL, *reply = NULL;
1578 DBusMessageIter iter, sub;
1579 char *socket_object_path = NULL;
1580 const char *sub_state = NULL,
1581 *interface = "org.freedesktop.systemd1.Unit",
1582 *property = "SubState";
1583 int r = 0;
1584
1585 assert(bus);
1586 assert(socket_name);
1587
1588 dbus_error_init(&error);
1589
1590 r = get_unit_path(bus, socket_name, &socket_object_path);
1591 if (r < 0)
1592 goto finish;
1593
1594 m = dbus_message_new_method_call("org.freedesktop.systemd1",
1595 socket_object_path,
1596 "org.freedesktop.DBus.Properties",
1597 "Get");
1598 if (!m) {
1599 log_error("Could not allocate message.");
1600 r = -ENOMEM;
1601 goto finish;
1602 }
1603
1604 if (!dbus_message_append_args(m,
1605 DBUS_TYPE_STRING, &interface,
1606 DBUS_TYPE_STRING, &property,
1607 DBUS_TYPE_INVALID)) {
1608 log_error("Could not append arguments to message.");
1609 r = -ENOMEM;
1610 goto finish;
1611 }
1612
1613 reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
1614 if (!reply) {
1615 log_error("Failed to issue method call: %s", bus_error_message(&error));
1616 r = -EIO;
1617 goto finish;
1618 }
1619
1620 dbus_message_iter_init(reply, &iter);
1621 dbus_message_iter_recurse(&iter, &sub);
1622
1623 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
1624 log_error("Failed to parse reply: %s", bus_error_message(&error));
1625 r = -EIO;
1626 goto finish;
1627 }
1628 dbus_message_iter_get_basic(&sub, &sub_state);
1629 r = streq(sub_state, "listening");
1630 finish:
1631 if (m)
1632 dbus_message_unref(m);
1633
1634 if (reply)
1635 dbus_message_unref(reply);
1636
1637 dbus_error_free(&error);
1638
1639 free(socket_object_path);
1640 return r;
1641 }
1642
1643 static void check_listening_sockets(
1644 DBusConnection *bus,
1645 const char *unit_name) {
1646
1647 DBusError error;
1648 DBusMessage *m = NULL, *reply = NULL;
1649 DBusMessageIter iter, sub;
1650 const char *service_trigger = NULL,
1651 *interface = "org.freedesktop.systemd1.Unit",
1652 *triggered_by_property = "TriggeredBy";
1653
1654 char *unit_path = NULL;
1655 bool print_warning_label = true;
1656
1657 dbus_error_init(&error);
1658
1659 if (get_unit_path(bus, unit_name, &unit_path) < 0)
1660 goto finish;
1661
1662 m = dbus_message_new_method_call("org.freedesktop.systemd1",
1663 unit_path,
1664 "org.freedesktop.DBus.Properties",
1665 "Get");
1666 if (!m) {
1667 log_error("Could not allocate message.");
1668 goto finish;
1669 }
1670
1671 if (!dbus_message_append_args(m,
1672 DBUS_TYPE_STRING, &interface,
1673 DBUS_TYPE_STRING, &triggered_by_property,
1674 DBUS_TYPE_INVALID)) {
1675 log_error("Could not append arguments to message.");
1676 goto finish;
1677 }
1678
1679 reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
1680 if (!reply) {
1681 log_error("Failed to issue method call: %s", bus_error_message(&error));
1682 goto finish;
1683 }
1684
1685 if (!dbus_message_iter_init(reply, &iter) ||
1686 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
1687 log_error("Failed to parse reply: %s", bus_error_message(&error));
1688 goto finish;
1689
1690 }
1691
1692 dbus_message_iter_recurse(&iter, &sub);
1693 dbus_message_iter_recurse(&sub, &iter);
1694 sub = iter;
1695
1696 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
1697 int r;
1698
1699 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
1700 log_error("Failed to parse reply: %s", bus_error_message(&error));
1701 goto finish;
1702 }
1703
1704 dbus_message_iter_get_basic(&sub, &service_trigger);
1705
1706 if (!endswith(service_trigger, ".socket"))
1707 goto next;
1708
1709 r = is_socket_listening(bus, service_trigger);
1710 if (r < 0)
1711 goto finish;
1712 if (r == 1) {
1713 if (print_warning_label) {
1714 log_warning("There are listening sockets associated with %s :", unit_name);
1715 print_warning_label = false;
1716 }
1717 log_warning("%s", service_trigger);
1718 }
1719 next:
1720 dbus_message_iter_recurse(&iter, &sub);
1721 iter = sub;
1722 }
1723 finish:
1724 if (m)
1725 dbus_message_unref(m);
1726
1727 if (reply)
1728 dbus_message_unref(reply);
1729
1730 dbus_error_free(&error);
1731
1732 free(unit_path);
1733 }
1734
1735 static int start_unit_one(
1736 DBusConnection *bus,
1737 const char *method,
1738 const char *name,
1739 const char *mode,
1740 DBusError *error,
1741 Set *s) {
1742
1743 DBusMessage *m = NULL, *reply = NULL;
1744 const char *path;
1745 int r;
1746
1747 assert(bus);
1748 assert(method);
1749 assert(name);
1750 assert(mode);
1751 assert(error);
1752 assert(arg_no_block || s);
1753
1754 if (!(m = dbus_message_new_method_call(
1755 "org.freedesktop.systemd1",
1756 "/org/freedesktop/systemd1",
1757 "org.freedesktop.systemd1.Manager",
1758 method))) {
1759 log_error("Could not allocate message.");
1760 r = -ENOMEM;
1761 goto finish;
1762 }
1763
1764 if (!dbus_message_append_args(m,
1765 DBUS_TYPE_STRING, &name,
1766 DBUS_TYPE_STRING, &mode,
1767 DBUS_TYPE_INVALID)) {
1768 log_error("Could not append arguments to message.");
1769 r = -ENOMEM;
1770 goto finish;
1771 }
1772
1773 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, error))) {
1774
1775 if (arg_action != ACTION_SYSTEMCTL && error_is_no_service(error)) {
1776 /* There's always a fallback possible for
1777 * legacy actions. */
1778 r = -EADDRNOTAVAIL;
1779 goto finish;
1780 }
1781
1782 log_error("Failed to issue method call: %s", bus_error_message(error));
1783 r = -EIO;
1784 goto finish;
1785 }
1786
1787 if (!dbus_message_get_args(reply, error,
1788 DBUS_TYPE_OBJECT_PATH, &path,
1789 DBUS_TYPE_INVALID)) {
1790 log_error("Failed to parse reply: %s", bus_error_message(error));
1791 r = -EIO;
1792 goto finish;
1793 }
1794
1795 if (need_daemon_reload(bus, name))
1796 log_warning("Warning: Unit file of created job changed on disk, 'systemctl %s daemon-reload' recommended.",
1797 arg_scope == UNIT_FILE_SYSTEM ? "--system" : "--user");
1798
1799 if (!arg_no_block) {
1800 char *p;
1801
1802 if (!(p = strdup(path))) {
1803 log_error("Failed to duplicate path.");
1804 r = -ENOMEM;
1805 goto finish;
1806 }
1807
1808 if ((r = set_put(s, p)) < 0) {
1809 free(p);
1810 log_error("Failed to add path to set.");
1811 goto finish;
1812 }
1813 }
1814
1815 /* When stopping unit check if we have some listening sockets active */
1816 if (streq(method, "StopUnit") && !arg_quiet)
1817 check_listening_sockets(bus, name);
1818
1819 r = 0;
1820
1821 finish:
1822 if (m)
1823 dbus_message_unref(m);
1824
1825 if (reply)
1826 dbus_message_unref(reply);
1827
1828 return r;
1829 }
1830
1831 static enum action verb_to_action(const char *verb) {
1832 if (streq(verb, "halt"))
1833 return ACTION_HALT;
1834 else if (streq(verb, "poweroff"))
1835 return ACTION_POWEROFF;
1836 else if (streq(verb, "reboot"))
1837 return ACTION_REBOOT;
1838 else if (streq(verb, "kexec"))
1839 return ACTION_KEXEC;
1840 else if (streq(verb, "rescue"))
1841 return ACTION_RESCUE;
1842 else if (streq(verb, "emergency"))
1843 return ACTION_EMERGENCY;
1844 else if (streq(verb, "default"))
1845 return ACTION_DEFAULT;
1846 else if (streq(verb, "exit"))
1847 return ACTION_EXIT;
1848 else if (streq(verb, "suspend"))
1849 return ACTION_SUSPEND;
1850 else if (streq(verb, "hibernate"))
1851 return ACTION_HIBERNATE;
1852 else
1853 return ACTION_INVALID;
1854 }
1855
1856 static int start_unit(DBusConnection *bus, char **args) {
1857
1858 static const char * const table[_ACTION_MAX] = {
1859 [ACTION_HALT] = SPECIAL_HALT_TARGET,
1860 [ACTION_POWEROFF] = SPECIAL_POWEROFF_TARGET,
1861 [ACTION_REBOOT] = SPECIAL_REBOOT_TARGET,
1862 [ACTION_KEXEC] = SPECIAL_KEXEC_TARGET,
1863 [ACTION_RUNLEVEL2] = SPECIAL_RUNLEVEL2_TARGET,
1864 [ACTION_RUNLEVEL3] = SPECIAL_RUNLEVEL3_TARGET,
1865 [ACTION_RUNLEVEL4] = SPECIAL_RUNLEVEL4_TARGET,
1866 [ACTION_RUNLEVEL5] = SPECIAL_RUNLEVEL5_TARGET,
1867 [ACTION_RESCUE] = SPECIAL_RESCUE_TARGET,
1868 [ACTION_EMERGENCY] = SPECIAL_EMERGENCY_TARGET,
1869 [ACTION_DEFAULT] = SPECIAL_DEFAULT_TARGET,
1870 [ACTION_EXIT] = SPECIAL_EXIT_TARGET,
1871 [ACTION_SUSPEND] = SPECIAL_SUSPEND_TARGET,
1872 [ACTION_HIBERNATE] = SPECIAL_HIBERNATE_TARGET
1873 };
1874
1875 int r, ret = 0;
1876 const char *method, *mode, *one_name;
1877 Set *s = NULL;
1878 DBusError error;
1879 char **name;
1880
1881 dbus_error_init(&error);
1882
1883 assert(bus);
1884
1885 ask_password_agent_open_if_enabled();
1886
1887 if (arg_action == ACTION_SYSTEMCTL) {
1888 method =
1889 streq(args[0], "stop") ||
1890 streq(args[0], "condstop") ? "StopUnit" :
1891 streq(args[0], "reload") ? "ReloadUnit" :
1892 streq(args[0], "restart") ? "RestartUnit" :
1893
1894 streq(args[0], "try-restart") ||
1895 streq(args[0], "condrestart") ? "TryRestartUnit" :
1896
1897 streq(args[0], "reload-or-restart") ? "ReloadOrRestartUnit" :
1898
1899 streq(args[0], "reload-or-try-restart") ||
1900 streq(args[0], "condreload") ||
1901
1902 streq(args[0], "force-reload") ? "ReloadOrTryRestartUnit" :
1903 "StartUnit";
1904
1905 mode =
1906 (streq(args[0], "isolate") ||
1907 streq(args[0], "rescue") ||
1908 streq(args[0], "emergency")) ? "isolate" : arg_job_mode;
1909
1910 one_name = table[verb_to_action(args[0])];
1911
1912 } else {
1913 assert(arg_action < ELEMENTSOF(table));
1914 assert(table[arg_action]);
1915
1916 method = "StartUnit";
1917
1918 mode = (arg_action == ACTION_EMERGENCY ||
1919 arg_action == ACTION_RESCUE ||
1920 arg_action == ACTION_RUNLEVEL2 ||
1921 arg_action == ACTION_RUNLEVEL3 ||
1922 arg_action == ACTION_RUNLEVEL4 ||
1923 arg_action == ACTION_RUNLEVEL5) ? "isolate" : "replace";
1924
1925 one_name = table[arg_action];
1926 }
1927
1928 if (!arg_no_block) {
1929 if ((ret = enable_wait_for_jobs(bus)) < 0) {
1930 log_error("Could not watch jobs: %s", strerror(-ret));
1931 goto finish;
1932 }
1933
1934 if (!(s = set_new(string_hash_func, string_compare_func))) {
1935 log_error("Failed to allocate set.");
1936 ret = -ENOMEM;
1937 goto finish;
1938 }
1939 }
1940
1941 if (one_name) {
1942 if ((ret = start_unit_one(bus, method, one_name, mode, &error, s)) <= 0)
1943 goto finish;
1944 } else {
1945 STRV_FOREACH(name, args+1)
1946 if ((r = start_unit_one(bus, method, *name, mode, &error, s)) != 0) {
1947 ret = translate_bus_error_to_exit_status(r, &error);
1948 dbus_error_free(&error);
1949 }
1950 }
1951
1952 if (!arg_no_block)
1953 if ((r = wait_for_jobs(bus, s)) < 0) {
1954 ret = r;
1955 goto finish;
1956 }
1957
1958 finish:
1959 if (s)
1960 set_free_free(s);
1961
1962 dbus_error_free(&error);
1963
1964 return ret;
1965 }
1966
1967 /* Ask systemd-logind, which might grant access to unprivileged users
1968 * through PolicyKit */
1969 static int reboot_with_logind(DBusConnection *bus, enum action a) {
1970 #ifdef HAVE_LOGIND
1971 const char *method;
1972 DBusMessage *m = NULL, *reply = NULL;
1973 DBusError error;
1974 dbus_bool_t interactive = true;
1975 int r;
1976
1977 dbus_error_init(&error);
1978
1979 polkit_agent_open_if_enabled();
1980
1981 switch (a) {
1982
1983 case ACTION_REBOOT:
1984 method = "Reboot";
1985 break;
1986
1987 case ACTION_POWEROFF:
1988 method = "PowerOff";
1989 break;
1990
1991 case ACTION_SUSPEND:
1992 method = "Suspend";
1993 break;
1994
1995 case ACTION_HIBERNATE:
1996 method = "Hibernate";
1997 break;
1998
1999 default:
2000 return -EINVAL;
2001 }
2002
2003 m = dbus_message_new_method_call(
2004 "org.freedesktop.login1",
2005 "/org/freedesktop/login1",
2006 "org.freedesktop.login1.Manager",
2007 method);
2008 if (!m) {
2009 log_error("Could not allocate message.");
2010 r = -ENOMEM;
2011 goto finish;
2012 }
2013
2014 if (!dbus_message_append_args(m,
2015 DBUS_TYPE_BOOLEAN, &interactive,
2016 DBUS_TYPE_INVALID)) {
2017 log_error("Could not append arguments to message.");
2018 r = -ENOMEM;
2019 goto finish;
2020 }
2021
2022 reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
2023 if (!reply) {
2024 if (error_is_no_service(&error)) {
2025 log_debug("Failed to issue method call: %s", bus_error_message(&error));
2026 r = -ENOENT;
2027 goto finish;
2028 }
2029
2030 if (dbus_error_has_name(&error, DBUS_ERROR_ACCESS_DENIED)) {
2031 log_debug("Failed to issue method call: %s", bus_error_message(&error));
2032 r = -EACCES;
2033 goto finish;
2034 }
2035
2036 log_info("Failed to issue method call: %s", bus_error_message(&error));
2037 r = -EIO;
2038 goto finish;
2039 }
2040
2041 r = 0;
2042
2043 finish:
2044 if (m)
2045 dbus_message_unref(m);
2046
2047 if (reply)
2048 dbus_message_unref(reply);
2049
2050 dbus_error_free(&error);
2051
2052 return r;
2053 #else
2054 return -ENOSYS;
2055 #endif
2056 }
2057
2058 static int start_special(DBusConnection *bus, char **args) {
2059 enum action a;
2060 int r;
2061
2062 assert(args);
2063
2064 a = verb_to_action(args[0]);
2065
2066 if (arg_force >= 2 && geteuid() != 0) {
2067 log_error("Must be root.");
2068 return -EPERM;
2069 }
2070
2071 if (arg_force >= 2 &&
2072 (a == ACTION_HALT ||
2073 a == ACTION_POWEROFF ||
2074 a == ACTION_REBOOT))
2075 halt_now(a);
2076
2077 if (arg_force >= 1 &&
2078 (a == ACTION_HALT ||
2079 a == ACTION_POWEROFF ||
2080 a == ACTION_REBOOT ||
2081 a == ACTION_KEXEC ||
2082 a == ACTION_EXIT))
2083 return daemon_reload(bus, args);
2084
2085 /* first try logind, to allow authentication with polkit */
2086 if (geteuid() != 0 &&
2087 (a == ACTION_POWEROFF ||
2088 a == ACTION_REBOOT ||
2089 a == ACTION_SUSPEND ||
2090 a == ACTION_HIBERNATE)) {
2091 r = reboot_with_logind(bus, a);
2092 if (r >= 0)
2093 return r;
2094 }
2095
2096 r = start_unit(bus, args);
2097 if (r >= 0)
2098 warn_wall(a);
2099
2100 return r;
2101 }
2102
2103 static int check_unit(DBusConnection *bus, char **args) {
2104 DBusMessage *m = NULL, *reply = NULL;
2105 const char
2106 *interface = "org.freedesktop.systemd1.Unit",
2107 *property = "ActiveState";
2108 int r = 3; /* According to LSB: "program is not running" */
2109 DBusError error;
2110 char **name;
2111
2112 assert(bus);
2113 assert(args);
2114
2115 dbus_error_init(&error);
2116
2117 STRV_FOREACH(name, args+1) {
2118 const char *path = NULL;
2119 const char *state;
2120 DBusMessageIter iter, sub;
2121
2122 if (!(m = dbus_message_new_method_call(
2123 "org.freedesktop.systemd1",
2124 "/org/freedesktop/systemd1",
2125 "org.freedesktop.systemd1.Manager",
2126 "GetUnit"))) {
2127 log_error("Could not allocate message.");
2128 r = -ENOMEM;
2129 goto finish;
2130 }
2131
2132 if (!dbus_message_append_args(m,
2133 DBUS_TYPE_STRING, name,
2134 DBUS_TYPE_INVALID)) {
2135 log_error("Could not append arguments to message.");
2136 r = -ENOMEM;
2137 goto finish;
2138 }
2139
2140 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2141
2142 /* Hmm, cannot figure out anything about this unit... */
2143 if (!arg_quiet)
2144 puts("unknown");
2145
2146 dbus_error_free(&error);
2147 dbus_message_unref(m);
2148 m = NULL;
2149 continue;
2150 }
2151
2152 if (!dbus_message_get_args(reply, &error,
2153 DBUS_TYPE_OBJECT_PATH, &path,
2154 DBUS_TYPE_INVALID)) {
2155 log_error("Failed to parse reply: %s", bus_error_message(&error));
2156 r = -EIO;
2157 goto finish;
2158 }
2159
2160 dbus_message_unref(m);
2161 if (!(m = dbus_message_new_method_call(
2162 "org.freedesktop.systemd1",
2163 path,
2164 "org.freedesktop.DBus.Properties",
2165 "Get"))) {
2166 log_error("Could not allocate message.");
2167 r = -ENOMEM;
2168 goto finish;
2169 }
2170
2171 if (!dbus_message_append_args(m,
2172 DBUS_TYPE_STRING, &interface,
2173 DBUS_TYPE_STRING, &property,
2174 DBUS_TYPE_INVALID)) {
2175 log_error("Could not append arguments to message.");
2176 r = -ENOMEM;
2177 goto finish;
2178 }
2179
2180 dbus_message_unref(reply);
2181 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2182 log_error("Failed to issue method call: %s", bus_error_message(&error));
2183 r = -EIO;
2184 goto finish;
2185 }
2186
2187 if (!dbus_message_iter_init(reply, &iter) ||
2188 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
2189 log_error("Failed to parse reply.");
2190 r = -EIO;
2191 goto finish;
2192 }
2193
2194 dbus_message_iter_recurse(&iter, &sub);
2195
2196 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
2197 log_error("Failed to parse reply.");
2198 r = -EIO;
2199 goto finish;
2200 }
2201
2202 dbus_message_iter_get_basic(&sub, &state);
2203
2204 if (!arg_quiet)
2205 puts(state);
2206
2207 if (streq(state, "active") || streq(state, "reloading"))
2208 r = 0;
2209
2210 dbus_message_unref(m);
2211 dbus_message_unref(reply);
2212 m = reply = NULL;
2213 }
2214
2215 finish:
2216 if (m)
2217 dbus_message_unref(m);
2218
2219 if (reply)
2220 dbus_message_unref(reply);
2221
2222 dbus_error_free(&error);
2223
2224 return r;
2225 }
2226
2227 static int kill_unit(DBusConnection *bus, char **args) {
2228 DBusMessage *m = NULL;
2229 int r = 0;
2230 DBusError error;
2231 char **name;
2232
2233 assert(bus);
2234 assert(args);
2235
2236 dbus_error_init(&error);
2237
2238 if (!arg_kill_who)
2239 arg_kill_who = "all";
2240
2241 if (!arg_kill_mode)
2242 arg_kill_mode = streq(arg_kill_who, "all") ? "control-group" : "process";
2243
2244 STRV_FOREACH(name, args+1) {
2245 DBusMessage *reply;
2246
2247 if (!(m = dbus_message_new_method_call(
2248 "org.freedesktop.systemd1",
2249 "/org/freedesktop/systemd1",
2250 "org.freedesktop.systemd1.Manager",
2251 "KillUnit"))) {
2252 log_error("Could not allocate message.");
2253 r = -ENOMEM;
2254 goto finish;
2255 }
2256
2257 if (!dbus_message_append_args(m,
2258 DBUS_TYPE_STRING, name,
2259 DBUS_TYPE_STRING, &arg_kill_who,
2260 DBUS_TYPE_STRING, &arg_kill_mode,
2261 DBUS_TYPE_INT32, &arg_signal,
2262 DBUS_TYPE_INVALID)) {
2263 log_error("Could not append arguments to message.");
2264 r = -ENOMEM;
2265 goto finish;
2266 }
2267
2268 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2269 log_error("Failed to issue method call: %s", bus_error_message(&error));
2270 dbus_error_free(&error);
2271 r = -EIO;
2272 }
2273
2274 dbus_message_unref(m);
2275
2276 if (reply)
2277 dbus_message_unref(reply);
2278 m = reply = NULL;
2279 }
2280
2281 finish:
2282 if (m)
2283 dbus_message_unref(m);
2284
2285 dbus_error_free(&error);
2286
2287 return r;
2288 }
2289
2290 typedef struct ExecStatusInfo {
2291 char *name;
2292
2293 char *path;
2294 char **argv;
2295
2296 bool ignore;
2297
2298 usec_t start_timestamp;
2299 usec_t exit_timestamp;
2300 pid_t pid;
2301 int code;
2302 int status;
2303
2304 LIST_FIELDS(struct ExecStatusInfo, exec);
2305 } ExecStatusInfo;
2306
2307 static void exec_status_info_free(ExecStatusInfo *i) {
2308 assert(i);
2309
2310 free(i->name);
2311 free(i->path);
2312 strv_free(i->argv);
2313 free(i);
2314 }
2315
2316 static int exec_status_info_deserialize(DBusMessageIter *sub, ExecStatusInfo *i) {
2317 uint64_t start_timestamp, exit_timestamp, start_timestamp_monotonic, exit_timestamp_monotonic;
2318 DBusMessageIter sub2, sub3;
2319 const char*path;
2320 unsigned n;
2321 uint32_t pid;
2322 int32_t code, status;
2323 dbus_bool_t ignore;
2324
2325 assert(i);
2326 assert(i);
2327
2328 if (dbus_message_iter_get_arg_type(sub) != DBUS_TYPE_STRUCT)
2329 return -EIO;
2330
2331 dbus_message_iter_recurse(sub, &sub2);
2332
2333 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, true) < 0)
2334 return -EIO;
2335
2336 if (!(i->path = strdup(path)))
2337 return -ENOMEM;
2338
2339 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_ARRAY ||
2340 dbus_message_iter_get_element_type(&sub2) != DBUS_TYPE_STRING)
2341 return -EIO;
2342
2343 n = 0;
2344 dbus_message_iter_recurse(&sub2, &sub3);
2345 while (dbus_message_iter_get_arg_type(&sub3) != DBUS_TYPE_INVALID) {
2346 assert(dbus_message_iter_get_arg_type(&sub3) == DBUS_TYPE_STRING);
2347 dbus_message_iter_next(&sub3);
2348 n++;
2349 }
2350
2351
2352 if (!(i->argv = new0(char*, n+1)))
2353 return -ENOMEM;
2354
2355 n = 0;
2356 dbus_message_iter_recurse(&sub2, &sub3);
2357 while (dbus_message_iter_get_arg_type(&sub3) != DBUS_TYPE_INVALID) {
2358 const char *s;
2359
2360 assert(dbus_message_iter_get_arg_type(&sub3) == DBUS_TYPE_STRING);
2361 dbus_message_iter_get_basic(&sub3, &s);
2362 dbus_message_iter_next(&sub3);
2363
2364 if (!(i->argv[n++] = strdup(s)))
2365 return -ENOMEM;
2366 }
2367
2368 if (!dbus_message_iter_next(&sub2) ||
2369 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_BOOLEAN, &ignore, true) < 0 ||
2370 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &start_timestamp, true) < 0 ||
2371 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &start_timestamp_monotonic, true) < 0 ||
2372 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &exit_timestamp, true) < 0 ||
2373 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &exit_timestamp_monotonic, true) < 0 ||
2374 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &pid, true) < 0 ||
2375 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_INT32, &code, true) < 0 ||
2376 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_INT32, &status, false) < 0)
2377 return -EIO;
2378
2379 i->ignore = ignore;
2380 i->start_timestamp = (usec_t) start_timestamp;
2381 i->exit_timestamp = (usec_t) exit_timestamp;
2382 i->pid = (pid_t) pid;
2383 i->code = code;
2384 i->status = status;
2385
2386 return 0;
2387 }
2388
2389 typedef struct UnitStatusInfo {
2390 const char *id;
2391 const char *load_state;
2392 const char *active_state;
2393 const char *sub_state;
2394 const char *unit_file_state;
2395
2396 const char *description;
2397 const char *following;
2398
2399 char **documentation;
2400
2401 const char *fragment_path;
2402 const char *source_path;
2403 const char *default_control_group;
2404
2405 const char *load_error;
2406 const char *result;
2407
2408 usec_t inactive_exit_timestamp;
2409 usec_t inactive_exit_timestamp_monotonic;
2410 usec_t active_enter_timestamp;
2411 usec_t active_exit_timestamp;
2412 usec_t inactive_enter_timestamp;
2413
2414 bool need_daemon_reload;
2415
2416 /* Service */
2417 pid_t main_pid;
2418 pid_t control_pid;
2419 const char *status_text;
2420 bool running:1;
2421
2422 usec_t start_timestamp;
2423 usec_t exit_timestamp;
2424
2425 int exit_code, exit_status;
2426
2427 usec_t condition_timestamp;
2428 bool condition_result;
2429
2430 /* Socket */
2431 unsigned n_accepted;
2432 unsigned n_connections;
2433 bool accept;
2434
2435 /* Device */
2436 const char *sysfs_path;
2437
2438 /* Mount, Automount */
2439 const char *where;
2440
2441 /* Swap */
2442 const char *what;
2443
2444 LIST_HEAD(ExecStatusInfo, exec);
2445 } UnitStatusInfo;
2446
2447 static void print_status_info(UnitStatusInfo *i) {
2448 ExecStatusInfo *p;
2449 const char *on, *off, *ss;
2450 usec_t timestamp;
2451 char since1[FORMAT_TIMESTAMP_PRETTY_MAX], *s1;
2452 char since2[FORMAT_TIMESTAMP_MAX], *s2;
2453 const char *path;
2454
2455 assert(i);
2456
2457 /* This shows pretty information about a unit. See
2458 * print_property() for a low-level property printer */
2459
2460 printf("%s", strna(i->id));
2461
2462 if (i->description && !streq_ptr(i->id, i->description))
2463 printf(" - %s", i->description);
2464
2465 printf("\n");
2466
2467 if (i->following)
2468 printf("\t Follow: unit currently follows state of %s\n", i->following);
2469
2470 if (streq_ptr(i->load_state, "error")) {
2471 on = ansi_highlight_red(true);
2472 off = ansi_highlight_red(false);
2473 } else
2474 on = off = "";
2475
2476 path = i->source_path ? i->source_path : i->fragment_path;
2477
2478 if (i->load_error)
2479 printf("\t Loaded: %s%s%s (Reason: %s)\n", on, strna(i->load_state), off, i->load_error);
2480 else if (path && i->unit_file_state)
2481 printf("\t Loaded: %s%s%s (%s; %s)\n", on, strna(i->load_state), off, path, i->unit_file_state);
2482 else if (path)
2483 printf("\t Loaded: %s%s%s (%s)\n", on, strna(i->load_state), off, path);
2484 else
2485 printf("\t Loaded: %s%s%s\n", on, strna(i->load_state), off);
2486
2487 ss = streq_ptr(i->active_state, i->sub_state) ? NULL : i->sub_state;
2488
2489 if (streq_ptr(i->active_state, "failed")) {
2490 on = ansi_highlight_red(true);
2491 off = ansi_highlight_red(false);
2492 } else if (streq_ptr(i->active_state, "active") || streq_ptr(i->active_state, "reloading")) {
2493 on = ansi_highlight_green(true);
2494 off = ansi_highlight_green(false);
2495 } else
2496 on = off = "";
2497
2498 if (ss)
2499 printf("\t Active: %s%s (%s)%s",
2500 on,
2501 strna(i->active_state),
2502 ss,
2503 off);
2504 else
2505 printf("\t Active: %s%s%s",
2506 on,
2507 strna(i->active_state),
2508 off);
2509
2510 if (!isempty(i->result) && !streq(i->result, "success"))
2511 printf(" (Result: %s)", i->result);
2512
2513 timestamp = (streq_ptr(i->active_state, "active") ||
2514 streq_ptr(i->active_state, "reloading")) ? i->active_enter_timestamp :
2515 (streq_ptr(i->active_state, "inactive") ||
2516 streq_ptr(i->active_state, "failed")) ? i->inactive_enter_timestamp :
2517 streq_ptr(i->active_state, "activating") ? i->inactive_exit_timestamp :
2518 i->active_exit_timestamp;
2519
2520 s1 = format_timestamp_pretty(since1, sizeof(since1), timestamp);
2521 s2 = format_timestamp(since2, sizeof(since2), timestamp);
2522
2523 if (s1)
2524 printf(" since %s; %s\n", s2, s1);
2525 else if (s2)
2526 printf(" since %s\n", s2);
2527 else
2528 printf("\n");
2529
2530 if (!i->condition_result && i->condition_timestamp > 0) {
2531 s1 = format_timestamp_pretty(since1, sizeof(since1), i->condition_timestamp);
2532 s2 = format_timestamp(since2, sizeof(since2), i->condition_timestamp);
2533
2534 if (s1)
2535 printf("\t start condition failed at %s; %s\n", s2, s1);
2536 else if (s2)
2537 printf("\t start condition failed at %s\n", s2);
2538 }
2539
2540 if (i->sysfs_path)
2541 printf("\t Device: %s\n", i->sysfs_path);
2542 if (i->where)
2543 printf("\t Where: %s\n", i->where);
2544 if (i->what)
2545 printf("\t What: %s\n", i->what);
2546
2547 if (!strv_isempty(i->documentation)) {
2548 char **t;
2549 bool first = true;
2550
2551 STRV_FOREACH(t, i->documentation) {
2552 if (first) {
2553 printf("\t Docs: %s\n", *t);
2554 first = false;
2555 } else
2556 printf("\t %s\n", *t);
2557 }
2558 }
2559
2560 if (i->accept)
2561 printf("\tAccepted: %u; Connected: %u\n", i->n_accepted, i->n_connections);
2562
2563 LIST_FOREACH(exec, p, i->exec) {
2564 char *t;
2565 bool good;
2566
2567 /* Only show exited processes here */
2568 if (p->code == 0)
2569 continue;
2570
2571 t = strv_join(p->argv, " ");
2572 printf("\t Process: %u %s=%s ", p->pid, p->name, strna(t));
2573 free(t);
2574
2575 good = is_clean_exit_lsb(p->code, p->status);
2576 if (!good) {
2577 on = ansi_highlight_red(true);
2578 off = ansi_highlight_red(false);
2579 } else
2580 on = off = "";
2581
2582 printf("%s(code=%s, ", on, sigchld_code_to_string(p->code));
2583
2584 if (p->code == CLD_EXITED) {
2585 const char *c;
2586
2587 printf("status=%i", p->status);
2588
2589 c = exit_status_to_string(p->status, EXIT_STATUS_SYSTEMD);
2590 if (c)
2591 printf("/%s", c);
2592
2593 } else
2594 printf("signal=%s", signal_to_string(p->status));
2595
2596 printf(")%s\n", off);
2597
2598 if (i->main_pid == p->pid &&
2599 i->start_timestamp == p->start_timestamp &&
2600 i->exit_timestamp == p->start_timestamp)
2601 /* Let's not show this twice */
2602 i->main_pid = 0;
2603
2604 if (p->pid == i->control_pid)
2605 i->control_pid = 0;
2606 }
2607
2608 if (i->main_pid > 0 || i->control_pid > 0) {
2609 printf("\t");
2610
2611 if (i->main_pid > 0) {
2612 printf("Main PID: %u", (unsigned) i->main_pid);
2613
2614 if (i->running) {
2615 char *t = NULL;
2616 get_process_comm(i->main_pid, &t);
2617 if (t) {
2618 printf(" (%s)", t);
2619 free(t);
2620 }
2621 } else if (i->exit_code > 0) {
2622 printf(" (code=%s, ", sigchld_code_to_string(i->exit_code));
2623
2624 if (i->exit_code == CLD_EXITED) {
2625 const char *c;
2626
2627 printf("status=%i", i->exit_status);
2628
2629 c = exit_status_to_string(i->exit_status, EXIT_STATUS_SYSTEMD);
2630 if (c)
2631 printf("/%s", c);
2632
2633 } else
2634 printf("signal=%s", signal_to_string(i->exit_status));
2635 printf(")");
2636 }
2637 }
2638
2639 if (i->main_pid > 0 && i->control_pid > 0)
2640 printf(";");
2641
2642 if (i->control_pid > 0) {
2643 char *t = NULL;
2644
2645 printf(" Control: %u", (unsigned) i->control_pid);
2646
2647 get_process_comm(i->control_pid, &t);
2648 if (t) {
2649 printf(" (%s)", t);
2650 free(t);
2651 }
2652 }
2653
2654 printf("\n");
2655 }
2656
2657 if (i->status_text)
2658 printf("\t Status: \"%s\"\n", i->status_text);
2659
2660 if (i->default_control_group) {
2661 unsigned c;
2662
2663 printf("\t CGroup: %s\n", i->default_control_group);
2664
2665 if (arg_transport != TRANSPORT_SSH) {
2666 unsigned k = 0;
2667 pid_t extra[2];
2668
2669 c = columns();
2670 if (c > 18)
2671 c -= 18;
2672 else
2673 c = 0;
2674
2675 if (i->main_pid > 0)
2676 extra[k++] = i->main_pid;
2677
2678 if (i->control_pid > 0)
2679 extra[k++] = i->control_pid;
2680
2681 show_cgroup_and_extra_by_spec(i->default_control_group, "\t\t ", c, false, arg_all, extra, k);
2682 }
2683 }
2684
2685 if (i->id && arg_transport != TRANSPORT_SSH) {
2686 printf("\n");
2687 show_journal_by_unit(i->id, arg_output, 0, i->inactive_exit_timestamp_monotonic, arg_lines, arg_all, arg_follow);
2688 }
2689
2690 if (i->need_daemon_reload)
2691 printf("\n%sWarning:%s Unit file changed on disk, 'systemctl %s daemon-reload' recommended.\n",
2692 ansi_highlight_red(true),
2693 ansi_highlight_red(false),
2694 arg_scope == UNIT_FILE_SYSTEM ? "--system" : "--user");
2695 }
2696
2697 static void show_unit_help(UnitStatusInfo *i) {
2698 char **p;
2699
2700 assert(i);
2701
2702 if (!i->documentation) {
2703 log_info("Documentation for %s not known.", i->id);
2704 return;
2705 }
2706
2707 STRV_FOREACH(p, i->documentation) {
2708
2709 if (startswith(*p, "man:")) {
2710 size_t k;
2711 char *e = NULL;
2712 char *page = NULL, *section = NULL;
2713 const char *args[4] = { "man", NULL, NULL, NULL };
2714 pid_t pid;
2715
2716 k = strlen(*p);
2717
2718 if ((*p)[k-1] == ')')
2719 e = strrchr(*p, '(');
2720
2721 if (e) {
2722 page = strndup((*p) + 4, e - *p - 4);
2723 if (!page) {
2724 log_error("Out of memory.");
2725 return;
2726 }
2727
2728 section = strndup(e + 1, *p + k - e - 2);
2729 if (!section) {
2730 free(page);
2731 log_error("Out of memory");
2732 return;
2733 }
2734
2735 args[1] = section;
2736 args[2] = page;
2737 } else
2738 args[1] = *p + 4;
2739
2740 pid = fork();
2741 if (pid < 0) {
2742 log_error("Failed to fork: %m");
2743 free(page);
2744 free(section);
2745 continue;
2746 }
2747
2748 if (pid == 0) {
2749 /* Child */
2750 execvp(args[0], (char**) args);
2751 log_error("Failed to execute man: %m");
2752 _exit(EXIT_FAILURE);
2753 }
2754
2755 free(page);
2756 free(section);
2757
2758 wait_for_terminate(pid, NULL);
2759 } else
2760 log_info("Can't show %s.", *p);
2761 }
2762 }
2763
2764 static int status_property(const char *name, DBusMessageIter *iter, UnitStatusInfo *i) {
2765
2766 assert(name);
2767 assert(iter);
2768 assert(i);
2769
2770 switch (dbus_message_iter_get_arg_type(iter)) {
2771
2772 case DBUS_TYPE_STRING: {
2773 const char *s;
2774
2775 dbus_message_iter_get_basic(iter, &s);
2776
2777 if (!isempty(s)) {
2778 if (streq(name, "Id"))
2779 i->id = s;
2780 else if (streq(name, "LoadState"))
2781 i->load_state = s;
2782 else if (streq(name, "ActiveState"))
2783 i->active_state = s;
2784 else if (streq(name, "SubState"))
2785 i->sub_state = s;
2786 else if (streq(name, "Description"))
2787 i->description = s;
2788 else if (streq(name, "FragmentPath"))
2789 i->fragment_path = s;
2790 else if (streq(name, "SourcePath"))
2791 i->source_path = s;
2792 else if (streq(name, "DefaultControlGroup"))
2793 i->default_control_group = s;
2794 else if (streq(name, "StatusText"))
2795 i->status_text = s;
2796 else if (streq(name, "SysFSPath"))
2797 i->sysfs_path = s;
2798 else if (streq(name, "Where"))
2799 i->where = s;
2800 else if (streq(name, "What"))
2801 i->what = s;
2802 else if (streq(name, "Following"))
2803 i->following = s;
2804 else if (streq(name, "UnitFileState"))
2805 i->unit_file_state = s;
2806 else if (streq(name, "Result"))
2807 i->result = s;
2808 }
2809
2810 break;
2811 }
2812
2813 case DBUS_TYPE_BOOLEAN: {
2814 dbus_bool_t b;
2815
2816 dbus_message_iter_get_basic(iter, &b);
2817
2818 if (streq(name, "Accept"))
2819 i->accept = b;
2820 else if (streq(name, "NeedDaemonReload"))
2821 i->need_daemon_reload = b;
2822 else if (streq(name, "ConditionResult"))
2823 i->condition_result = b;
2824
2825 break;
2826 }
2827
2828 case DBUS_TYPE_UINT32: {
2829 uint32_t u;
2830
2831 dbus_message_iter_get_basic(iter, &u);
2832
2833 if (streq(name, "MainPID")) {
2834 if (u > 0) {
2835 i->main_pid = (pid_t) u;
2836 i->running = true;
2837 }
2838 } else if (streq(name, "ControlPID"))
2839 i->control_pid = (pid_t) u;
2840 else if (streq(name, "ExecMainPID")) {
2841 if (u > 0)
2842 i->main_pid = (pid_t) u;
2843 } else if (streq(name, "NAccepted"))
2844 i->n_accepted = u;
2845 else if (streq(name, "NConnections"))
2846 i->n_connections = u;
2847
2848 break;
2849 }
2850
2851 case DBUS_TYPE_INT32: {
2852 int32_t j;
2853
2854 dbus_message_iter_get_basic(iter, &j);
2855
2856 if (streq(name, "ExecMainCode"))
2857 i->exit_code = (int) j;
2858 else if (streq(name, "ExecMainStatus"))
2859 i->exit_status = (int) j;
2860
2861 break;
2862 }
2863
2864 case DBUS_TYPE_UINT64: {
2865 uint64_t u;
2866
2867 dbus_message_iter_get_basic(iter, &u);
2868
2869 if (streq(name, "ExecMainStartTimestamp"))
2870 i->start_timestamp = (usec_t) u;
2871 else if (streq(name, "ExecMainExitTimestamp"))
2872 i->exit_timestamp = (usec_t) u;
2873 else if (streq(name, "ActiveEnterTimestamp"))
2874 i->active_enter_timestamp = (usec_t) u;
2875 else if (streq(name, "InactiveEnterTimestamp"))
2876 i->inactive_enter_timestamp = (usec_t) u;
2877 else if (streq(name, "InactiveExitTimestamp"))
2878 i->inactive_exit_timestamp = (usec_t) u;
2879 else if (streq(name, "InactiveExitTimestampMonotonic"))
2880 i->inactive_exit_timestamp_monotonic = (usec_t) u;
2881 else if (streq(name, "ActiveExitTimestamp"))
2882 i->active_exit_timestamp = (usec_t) u;
2883 else if (streq(name, "ConditionTimestamp"))
2884 i->condition_timestamp = (usec_t) u;
2885
2886 break;
2887 }
2888
2889 case DBUS_TYPE_ARRAY: {
2890
2891 if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT &&
2892 startswith(name, "Exec")) {
2893 DBusMessageIter sub;
2894
2895 dbus_message_iter_recurse(iter, &sub);
2896 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2897 ExecStatusInfo *info;
2898 int r;
2899
2900 if (!(info = new0(ExecStatusInfo, 1)))
2901 return -ENOMEM;
2902
2903 if (!(info->name = strdup(name))) {
2904 free(info);
2905 return -ENOMEM;
2906 }
2907
2908 if ((r = exec_status_info_deserialize(&sub, info)) < 0) {
2909 free(info);
2910 return r;
2911 }
2912
2913 LIST_PREPEND(ExecStatusInfo, exec, i->exec, info);
2914
2915 dbus_message_iter_next(&sub);
2916 }
2917 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRING &&
2918 streq(name, "Documentation")) {
2919
2920 DBusMessageIter sub;
2921
2922 dbus_message_iter_recurse(iter, &sub);
2923 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING) {
2924 const char *s;
2925 char **l;
2926
2927 dbus_message_iter_get_basic(&sub, &s);
2928
2929 l = strv_append(i->documentation, s);
2930 if (!l)
2931 return -ENOMEM;
2932
2933 strv_free(i->documentation);
2934 i->documentation = l;
2935
2936 dbus_message_iter_next(&sub);
2937 }
2938 }
2939
2940 break;
2941 }
2942
2943 case DBUS_TYPE_STRUCT: {
2944
2945 if (streq(name, "LoadError")) {
2946 DBusMessageIter sub;
2947 const char *n, *message;
2948 int r;
2949
2950 dbus_message_iter_recurse(iter, &sub);
2951
2952 r = bus_iter_get_basic_and_next(&sub, DBUS_TYPE_STRING, &n, true);
2953 if (r < 0)
2954 return r;
2955
2956 r = bus_iter_get_basic_and_next(&sub, DBUS_TYPE_STRING, &message, false);
2957 if (r < 0)
2958 return r;
2959
2960 if (!isempty(message))
2961 i->load_error = message;
2962 }
2963
2964 break;
2965 }
2966 }
2967
2968 return 0;
2969 }
2970
2971 static int print_property(const char *name, DBusMessageIter *iter) {
2972 assert(name);
2973 assert(iter);
2974
2975 /* This is a low-level property printer, see
2976 * print_status_info() for the nicer output */
2977
2978 if (arg_property && !strv_find(arg_property, name))
2979 return 0;
2980
2981 switch (dbus_message_iter_get_arg_type(iter)) {
2982
2983 case DBUS_TYPE_STRUCT: {
2984 DBusMessageIter sub;
2985 dbus_message_iter_recurse(iter, &sub);
2986
2987 if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_UINT32 && streq(name, "Job")) {
2988 uint32_t u;
2989
2990 dbus_message_iter_get_basic(&sub, &u);
2991
2992 if (u)
2993 printf("%s=%u\n", name, (unsigned) u);
2994 else if (arg_all)
2995 printf("%s=\n", name);
2996
2997 return 0;
2998 } else if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING && streq(name, "Unit")) {
2999 const char *s;
3000
3001 dbus_message_iter_get_basic(&sub, &s);
3002
3003 if (arg_all || s[0])
3004 printf("%s=%s\n", name, s);
3005
3006 return 0;
3007 } else if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING && streq(name, "LoadError")) {
3008 const char *a = NULL, *b = NULL;
3009
3010 if (bus_iter_get_basic_and_next(&sub, DBUS_TYPE_STRING, &a, true) >= 0)
3011 bus_iter_get_basic_and_next(&sub, DBUS_TYPE_STRING, &b, false);
3012
3013 if (arg_all || !isempty(a) || !isempty(b))
3014 printf("%s=%s \"%s\"\n", name, strempty(a), strempty(b));
3015
3016 return 0;
3017 }
3018
3019 break;
3020 }
3021
3022 case DBUS_TYPE_ARRAY:
3023
3024 if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "EnvironmentFiles")) {
3025 DBusMessageIter sub, sub2;
3026
3027 dbus_message_iter_recurse(iter, &sub);
3028 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
3029 const char *path;
3030 dbus_bool_t ignore;
3031
3032 dbus_message_iter_recurse(&sub, &sub2);
3033
3034 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, true) >= 0 &&
3035 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_BOOLEAN, &ignore, false) >= 0)
3036 printf("EnvironmentFile=%s (ignore_errors=%s)\n", path, yes_no(ignore));
3037
3038 dbus_message_iter_next(&sub);
3039 }
3040
3041 return 0;
3042
3043 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Paths")) {
3044 DBusMessageIter sub, sub2;
3045
3046 dbus_message_iter_recurse(iter, &sub);
3047 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
3048 const char *type, *path;
3049
3050 dbus_message_iter_recurse(&sub, &sub2);
3051
3052 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) >= 0 &&
3053 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, false) >= 0)
3054 printf("%s=%s\n", type, path);
3055
3056 dbus_message_iter_next(&sub);
3057 }
3058
3059 return 0;
3060
3061 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Timers")) {
3062 DBusMessageIter sub, sub2;
3063
3064 dbus_message_iter_recurse(iter, &sub);
3065 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
3066 const char *base;
3067 uint64_t value, next_elapse;
3068
3069 dbus_message_iter_recurse(&sub, &sub2);
3070
3071 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &base, true) >= 0 &&
3072 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &value, true) >= 0 &&
3073 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &next_elapse, false) >= 0) {
3074 char timespan1[FORMAT_TIMESPAN_MAX], timespan2[FORMAT_TIMESPAN_MAX];
3075
3076 printf("%s={ value=%s ; next_elapse=%s }\n",
3077 base,
3078 format_timespan(timespan1, sizeof(timespan1), value),
3079 format_timespan(timespan2, sizeof(timespan2), next_elapse));
3080 }
3081
3082 dbus_message_iter_next(&sub);
3083 }
3084
3085 return 0;
3086
3087 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "ControlGroupAttributes")) {
3088 DBusMessageIter sub, sub2;
3089
3090 dbus_message_iter_recurse(iter, &sub);
3091 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
3092 const char *controller, *attr, *value;
3093
3094 dbus_message_iter_recurse(&sub, &sub2);
3095
3096 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &controller, true) >= 0 &&
3097 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &attr, true) >= 0 &&
3098 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &value, false) >= 0) {
3099
3100 printf("ControlGroupAttribute={ controller=%s ; attribute=%s ; value=\"%s\" }\n",
3101 controller,
3102 attr,
3103 value);
3104 }
3105
3106 dbus_message_iter_next(&sub);
3107 }
3108
3109 return 0;
3110
3111 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && startswith(name, "Exec")) {
3112 DBusMessageIter sub;
3113
3114 dbus_message_iter_recurse(iter, &sub);
3115 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
3116 ExecStatusInfo info;
3117
3118 zero(info);
3119 if (exec_status_info_deserialize(&sub, &info) >= 0) {
3120 char timestamp1[FORMAT_TIMESTAMP_MAX], timestamp2[FORMAT_TIMESTAMP_MAX];
3121 char *t;
3122
3123 t = strv_join(info.argv, " ");
3124
3125 printf("%s={ path=%s ; argv[]=%s ; ignore_errors=%s ; start_time=[%s] ; stop_time=[%s] ; pid=%u ; code=%s ; status=%i%s%s }\n",
3126 name,
3127 strna(info.path),
3128 strna(t),
3129 yes_no(info.ignore),
3130 strna(format_timestamp(timestamp1, sizeof(timestamp1), info.start_timestamp)),
3131 strna(format_timestamp(timestamp2, sizeof(timestamp2), info.exit_timestamp)),
3132 (unsigned) info. pid,
3133 sigchld_code_to_string(info.code),
3134 info.status,
3135 info.code == CLD_EXITED ? "" : "/",
3136 strempty(info.code == CLD_EXITED ? NULL : signal_to_string(info.status)));
3137
3138 free(t);
3139 }
3140
3141 free(info.path);
3142 strv_free(info.argv);
3143
3144 dbus_message_iter_next(&sub);
3145 }
3146
3147 return 0;
3148 }
3149
3150 break;
3151 }
3152
3153 if (generic_print_property(name, iter, arg_all) > 0)
3154 return 0;
3155
3156 if (arg_all)
3157 printf("%s=[unprintable]\n", name);
3158
3159 return 0;
3160 }
3161
3162 static int show_one(const char *verb, DBusConnection *bus, const char *path, bool show_properties, bool *new_line) {
3163 DBusMessage *m = NULL, *reply = NULL;
3164 const char *interface = "";
3165 int r;
3166 DBusError error;
3167 DBusMessageIter iter, sub, sub2, sub3;
3168 UnitStatusInfo info;
3169 ExecStatusInfo *p;
3170
3171 assert(bus);
3172 assert(path);
3173 assert(new_line);
3174
3175 zero(info);
3176 dbus_error_init(&error);
3177
3178 if (!(m = dbus_message_new_method_call(
3179 "org.freedesktop.systemd1",
3180 path,
3181 "org.freedesktop.DBus.Properties",
3182 "GetAll"))) {
3183 log_error("Could not allocate message.");
3184 r = -ENOMEM;
3185 goto finish;
3186 }
3187
3188 if (!dbus_message_append_args(m,
3189 DBUS_TYPE_STRING, &interface,
3190 DBUS_TYPE_INVALID)) {
3191 log_error("Could not append arguments to message.");
3192 r = -ENOMEM;
3193 goto finish;
3194 }
3195
3196 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3197 log_error("Failed to issue method call: %s", bus_error_message(&error));
3198 r = -EIO;
3199 goto finish;
3200 }
3201
3202 if (!dbus_message_iter_init(reply, &iter) ||
3203 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
3204 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_DICT_ENTRY) {
3205 log_error("Failed to parse reply.");
3206 r = -EIO;
3207 goto finish;
3208 }
3209
3210 dbus_message_iter_recurse(&iter, &sub);
3211
3212 if (*new_line)
3213 printf("\n");
3214
3215 *new_line = true;
3216
3217 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
3218 const char *name;
3219
3220 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_DICT_ENTRY) {
3221 log_error("Failed to parse reply.");
3222 r = -EIO;
3223 goto finish;
3224 }
3225
3226 dbus_message_iter_recurse(&sub, &sub2);
3227
3228 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0) {
3229 log_error("Failed to parse reply.");
3230 r = -EIO;
3231 goto finish;
3232 }
3233
3234 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT) {
3235 log_error("Failed to parse reply.");
3236 r = -EIO;
3237 goto finish;
3238 }
3239
3240 dbus_message_iter_recurse(&sub2, &sub3);
3241
3242 if (show_properties)
3243 r = print_property(name, &sub3);
3244 else
3245 r = status_property(name, &sub3, &info);
3246
3247 if (r < 0) {
3248 log_error("Failed to parse reply.");
3249 r = -EIO;
3250 goto finish;
3251 }
3252
3253 dbus_message_iter_next(&sub);
3254 }
3255
3256 r = 0;
3257
3258 if (!show_properties) {
3259 if (streq(verb, "help"))
3260 show_unit_help(&info);
3261 else
3262 print_status_info(&info);
3263 }
3264
3265 strv_free(info.documentation);
3266
3267 if (!streq_ptr(info.active_state, "active") &&
3268 !streq_ptr(info.active_state, "reloading") &&
3269 streq(verb, "status"))
3270 /* According to LSB: "program not running" */
3271 r = 3;
3272
3273 while ((p = info.exec)) {
3274 LIST_REMOVE(ExecStatusInfo, exec, info.exec, p);
3275 exec_status_info_free(p);
3276 }
3277
3278 finish:
3279 if (m)
3280 dbus_message_unref(m);
3281
3282 if (reply)
3283 dbus_message_unref(reply);
3284
3285 dbus_error_free(&error);
3286
3287 return r;
3288 }
3289
3290 static int show_one_by_pid(const char *verb, DBusConnection *bus, uint32_t pid, bool *new_line) {
3291 DBusMessage *m = NULL, *reply = NULL;
3292 const char *path = NULL;
3293 DBusError error;
3294 int r;
3295
3296 dbus_error_init(&error);
3297
3298 m = dbus_message_new_method_call(
3299 "org.freedesktop.systemd1",
3300 "/org/freedesktop/systemd1",
3301 "org.freedesktop.systemd1.Manager",
3302 "GetUnitByPID");
3303 if (!m) {
3304 log_error("Could not allocate message.");
3305 r = -ENOMEM;
3306 goto finish;
3307 }
3308
3309 if (!dbus_message_append_args(m,
3310 DBUS_TYPE_UINT32, &pid,
3311 DBUS_TYPE_INVALID)) {
3312 log_error("Could not append arguments to message.");
3313 r = -ENOMEM;
3314 goto finish;
3315 }
3316
3317 reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
3318 if (!reply) {
3319 log_error("Failed to issue method call: %s", bus_error_message(&error));
3320 r = -EIO;
3321 goto finish;
3322 }
3323
3324 if (!dbus_message_get_args(reply, &error,
3325 DBUS_TYPE_OBJECT_PATH, &path,
3326 DBUS_TYPE_INVALID)) {
3327 log_error("Failed to parse reply: %s", bus_error_message(&error));
3328 r = -EIO;
3329 goto finish;
3330 }
3331
3332 r = show_one(verb, bus, path, false, new_line);
3333
3334 finish:
3335 if (m)
3336 dbus_message_unref(m);
3337
3338 if (reply)
3339 dbus_message_unref(reply);
3340
3341 dbus_error_free(&error);
3342
3343 return r;
3344 }
3345
3346 static int show(DBusConnection *bus, char **args) {
3347 int r, ret = 0;
3348 bool show_properties, new_line = false;
3349 char **name;
3350
3351 assert(bus);
3352 assert(args);
3353
3354 show_properties = streq(args[0], "show");
3355
3356 if (show_properties)
3357 pager_open_if_enabled();
3358
3359 if (show_properties && strv_length(args) <= 1) {
3360 /* If not argument is specified inspect the manager
3361 * itself */
3362
3363 return show_one(args[0], bus, "/org/freedesktop/systemd1", show_properties, &new_line);
3364 }
3365
3366 STRV_FOREACH(name, args+1) {
3367 uint32_t id;
3368
3369 if (safe_atou32(*name, &id) < 0) {
3370
3371 /* Interpret as unit name */
3372
3373 char *e, *p;
3374 e = bus_path_escape(*name);
3375 if (!e)
3376 return -ENOMEM;
3377 p = strappend("/org/freedesktop/systemd1/unit/", e);
3378 free(e);
3379 if (!p)
3380 return -ENOMEM;
3381
3382 r = show_one(args[0], bus, p, show_properties, &new_line);
3383 free(p);
3384
3385 if (r != 0)
3386 ret = r;
3387
3388 } else if (show_properties) {
3389
3390 /* Interpret as job id */
3391
3392 char *p;
3393 if (asprintf(&p, "/org/freedesktop/systemd1/job/%u", id) < 0)
3394 return -ENOMEM;
3395
3396 r = show_one(args[0], bus, p, show_properties, &new_line);
3397 free(p);
3398
3399 if (r != 0)
3400 ret = r;
3401
3402 } else {
3403
3404 /* Interpret as PID */
3405
3406 r = show_one_by_pid(args[0], bus, id, &new_line);
3407 if (r != 0)
3408 ret = r;
3409 }
3410 }
3411
3412 return ret;
3413 }
3414
3415 static int dump(DBusConnection *bus, char **args) {
3416 DBusMessage *m = NULL, *reply = NULL;
3417 DBusError error;
3418 int r;
3419 const char *text;
3420
3421 dbus_error_init(&error);
3422
3423 pager_open_if_enabled();
3424
3425 if (!(m = dbus_message_new_method_call(
3426 "org.freedesktop.systemd1",
3427 "/org/freedesktop/systemd1",
3428 "org.freedesktop.systemd1.Manager",
3429 "Dump"))) {
3430 log_error("Could not allocate message.");
3431 return -ENOMEM;
3432 }
3433
3434 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3435 log_error("Failed to issue method call: %s", bus_error_message(&error));
3436 r = -EIO;
3437 goto finish;
3438 }
3439
3440 if (!dbus_message_get_args(reply, &error,
3441 DBUS_TYPE_STRING, &text,
3442 DBUS_TYPE_INVALID)) {
3443 log_error("Failed to parse reply: %s", bus_error_message(&error));
3444 r = -EIO;
3445 goto finish;
3446 }
3447
3448 fputs(text, stdout);
3449
3450 r = 0;
3451
3452 finish:
3453 if (m)
3454 dbus_message_unref(m);
3455
3456 if (reply)
3457 dbus_message_unref(reply);
3458
3459 dbus_error_free(&error);
3460
3461 return r;
3462 }
3463
3464 static int snapshot(DBusConnection *bus, char **args) {
3465 DBusMessage *m = NULL, *reply = NULL;
3466 DBusError error;
3467 int r;
3468 const char *name = "", *path, *id;
3469 dbus_bool_t cleanup = FALSE;
3470 DBusMessageIter iter, sub;
3471 const char
3472 *interface = "org.freedesktop.systemd1.Unit",
3473 *property = "Id";
3474
3475 dbus_error_init(&error);
3476
3477 if (!(m = dbus_message_new_method_call(
3478 "org.freedesktop.systemd1",
3479 "/org/freedesktop/systemd1",
3480 "org.freedesktop.systemd1.Manager",
3481 "CreateSnapshot"))) {
3482 log_error("Could not allocate message.");
3483 return -ENOMEM;
3484 }
3485
3486 if (strv_length(args) > 1)
3487 name = args[1];
3488
3489 if (!dbus_message_append_args(m,
3490 DBUS_TYPE_STRING, &name,
3491 DBUS_TYPE_BOOLEAN, &cleanup,
3492 DBUS_TYPE_INVALID)) {
3493 log_error("Could not append arguments to message.");
3494 r = -ENOMEM;
3495 goto finish;
3496 }
3497
3498 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3499 log_error("Failed to issue method call: %s", bus_error_message(&error));
3500 r = -EIO;
3501 goto finish;
3502 }
3503
3504 if (!dbus_message_get_args(reply, &error,
3505 DBUS_TYPE_OBJECT_PATH, &path,
3506 DBUS_TYPE_INVALID)) {
3507 log_error("Failed to parse reply: %s", bus_error_message(&error));
3508 r = -EIO;
3509 goto finish;
3510 }
3511
3512 dbus_message_unref(m);
3513 if (!(m = dbus_message_new_method_call(
3514 "org.freedesktop.systemd1",
3515 path,
3516 "org.freedesktop.DBus.Properties",
3517 "Get"))) {
3518 log_error("Could not allocate message.");
3519 return -ENOMEM;
3520 }
3521
3522 if (!dbus_message_append_args(m,
3523 DBUS_TYPE_STRING, &interface,
3524 DBUS_TYPE_STRING, &property,
3525 DBUS_TYPE_INVALID)) {
3526 log_error("Could not append arguments to message.");
3527 r = -ENOMEM;
3528 goto finish;
3529 }
3530
3531 dbus_message_unref(reply);
3532 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3533 log_error("Failed to issue method call: %s", bus_error_message(&error));
3534 r = -EIO;
3535 goto finish;
3536 }
3537
3538 if (!dbus_message_iter_init(reply, &iter) ||
3539 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
3540 log_error("Failed to parse reply.");
3541 r = -EIO;
3542 goto finish;
3543 }
3544
3545 dbus_message_iter_recurse(&iter, &sub);
3546
3547 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
3548 log_error("Failed to parse reply.");
3549 r = -EIO;
3550 goto finish;
3551 }
3552
3553 dbus_message_iter_get_basic(&sub, &id);
3554
3555 if (!arg_quiet)
3556 puts(id);
3557 r = 0;
3558
3559 finish:
3560 if (m)
3561 dbus_message_unref(m);
3562
3563 if (reply)
3564 dbus_message_unref(reply);
3565
3566 dbus_error_free(&error);
3567
3568 return r;
3569 }
3570
3571 static int delete_snapshot(DBusConnection *bus, char **args) {
3572 DBusMessage *m = NULL, *reply = NULL;
3573 int r;
3574 DBusError error;
3575 char **name;
3576
3577 assert(bus);
3578 assert(args);
3579
3580 dbus_error_init(&error);
3581
3582 STRV_FOREACH(name, args+1) {
3583 const char *path = NULL;
3584
3585 if (!(m = dbus_message_new_method_call(
3586 "org.freedesktop.systemd1",
3587 "/org/freedesktop/systemd1",
3588 "org.freedesktop.systemd1.Manager",
3589 "GetUnit"))) {
3590 log_error("Could not allocate message.");
3591 r = -ENOMEM;
3592 goto finish;
3593 }
3594
3595 if (!dbus_message_append_args(m,
3596 DBUS_TYPE_STRING, name,
3597 DBUS_TYPE_INVALID)) {
3598 log_error("Could not append arguments to message.");
3599 r = -ENOMEM;
3600 goto finish;
3601 }
3602
3603 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3604 log_error("Failed to issue method call: %s", bus_error_message(&error));
3605 r = -EIO;
3606 goto finish;
3607 }
3608
3609 if (!dbus_message_get_args(reply, &error,
3610 DBUS_TYPE_OBJECT_PATH, &path,
3611 DBUS_TYPE_INVALID)) {
3612 log_error("Failed to parse reply: %s", bus_error_message(&error));
3613 r = -EIO;
3614 goto finish;
3615 }
3616
3617 dbus_message_unref(m);
3618 if (!(m = dbus_message_new_method_call(
3619 "org.freedesktop.systemd1",
3620 path,
3621 "org.freedesktop.systemd1.Snapshot",
3622 "Remove"))) {
3623 log_error("Could not allocate message.");
3624 r = -ENOMEM;
3625 goto finish;
3626 }
3627
3628 dbus_message_unref(reply);
3629 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3630 log_error("Failed to issue method call: %s", bus_error_message(&error));
3631 r = -EIO;
3632 goto finish;
3633 }
3634
3635 dbus_message_unref(m);
3636 dbus_message_unref(reply);
3637 m = reply = NULL;
3638 }
3639
3640 r = 0;
3641
3642 finish:
3643 if (m)
3644 dbus_message_unref(m);
3645
3646 if (reply)
3647 dbus_message_unref(reply);
3648
3649 dbus_error_free(&error);
3650
3651 return r;
3652 }
3653
3654 static int daemon_reload(DBusConnection *bus, char **args) {
3655 DBusMessage *m = NULL, *reply = NULL;
3656 DBusError error;
3657 int r;
3658 const char *method;
3659
3660 dbus_error_init(&error);
3661
3662 if (arg_action == ACTION_RELOAD)
3663 method = "Reload";
3664 else if (arg_action == ACTION_REEXEC)
3665 method = "Reexecute";
3666 else {
3667 assert(arg_action == ACTION_SYSTEMCTL);
3668
3669 method =
3670 streq(args[0], "clear-jobs") ||
3671 streq(args[0], "cancel") ? "ClearJobs" :
3672 streq(args[0], "daemon-reexec") ? "Reexecute" :
3673 streq(args[0], "reset-failed") ? "ResetFailed" :
3674 streq(args[0], "halt") ? "Halt" :
3675 streq(args[0], "poweroff") ? "PowerOff" :
3676 streq(args[0], "reboot") ? "Reboot" :
3677 streq(args[0], "kexec") ? "KExec" :
3678 streq(args[0], "exit") ? "Exit" :
3679 /* "daemon-reload" */ "Reload";
3680 }
3681
3682 if (!(m = dbus_message_new_method_call(
3683 "org.freedesktop.systemd1",
3684 "/org/freedesktop/systemd1",
3685 "org.freedesktop.systemd1.Manager",
3686 method))) {
3687 log_error("Could not allocate message.");
3688 return -ENOMEM;
3689 }
3690
3691 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3692
3693 if (arg_action != ACTION_SYSTEMCTL && error_is_no_service(&error)) {
3694 /* There's always a fallback possible for
3695 * legacy actions. */
3696 r = -EADDRNOTAVAIL;
3697 goto finish;
3698 }
3699
3700 if (streq(method, "Reexecute") && dbus_error_has_name(&error, DBUS_ERROR_NO_REPLY)) {
3701 /* On reexecution, we expect a disconnect, not
3702 * a reply */
3703 r = 0;
3704 goto finish;
3705 }
3706
3707 log_error("Failed to issue method call: %s", bus_error_message(&error));
3708 r = -EIO;
3709 goto finish;
3710 }
3711
3712 r = 0;
3713
3714 finish:
3715 if (m)
3716 dbus_message_unref(m);
3717
3718 if (reply)
3719 dbus_message_unref(reply);
3720
3721 dbus_error_free(&error);
3722
3723 return r;
3724 }
3725
3726 static int reset_failed(DBusConnection *bus, char **args) {
3727 DBusMessage *m = NULL;
3728 int r;
3729 DBusError error;
3730 char **name;
3731
3732 assert(bus);
3733 dbus_error_init(&error);
3734
3735 if (strv_length(args) <= 1)
3736 return daemon_reload(bus, args);
3737
3738 STRV_FOREACH(name, args+1) {
3739 DBusMessage *reply;
3740
3741 if (!(m = dbus_message_new_method_call(
3742 "org.freedesktop.systemd1",
3743 "/org/freedesktop/systemd1",
3744 "org.freedesktop.systemd1.Manager",
3745 "ResetFailedUnit"))) {
3746 log_error("Could not allocate message.");
3747 r = -ENOMEM;
3748 goto finish;
3749 }
3750
3751 if (!dbus_message_append_args(m,
3752 DBUS_TYPE_STRING, name,
3753 DBUS_TYPE_INVALID)) {
3754 log_error("Could not append arguments to message.");
3755 r = -ENOMEM;
3756 goto finish;
3757 }
3758
3759 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3760 log_error("Failed to issue method call: %s", bus_error_message(&error));
3761 r = -EIO;
3762 goto finish;
3763 }
3764
3765 dbus_message_unref(m);
3766 dbus_message_unref(reply);
3767 m = reply = NULL;
3768 }
3769
3770 r = 0;
3771
3772 finish:
3773 if (m)
3774 dbus_message_unref(m);
3775
3776 dbus_error_free(&error);
3777
3778 return r;
3779 }
3780
3781 static int show_enviroment(DBusConnection *bus, char **args) {
3782 DBusMessage *m = NULL, *reply = NULL;
3783 DBusError error;
3784 DBusMessageIter iter, sub, sub2;
3785 int r;
3786 const char
3787 *interface = "org.freedesktop.systemd1.Manager",
3788 *property = "Environment";
3789
3790 dbus_error_init(&error);
3791
3792 pager_open_if_enabled();
3793
3794 if (!(m = dbus_message_new_method_call(
3795 "org.freedesktop.systemd1",
3796 "/org/freedesktop/systemd1",
3797 "org.freedesktop.DBus.Properties",
3798 "Get"))) {
3799 log_error("Could not allocate message.");
3800 return -ENOMEM;
3801 }
3802
3803 if (!dbus_message_append_args(m,
3804 DBUS_TYPE_STRING, &interface,
3805 DBUS_TYPE_STRING, &property,
3806 DBUS_TYPE_INVALID)) {
3807 log_error("Could not append arguments to message.");
3808 r = -ENOMEM;
3809 goto finish;
3810 }
3811
3812 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3813 log_error("Failed to issue method call: %s", bus_error_message(&error));
3814 r = -EIO;
3815 goto finish;
3816 }
3817
3818 if (!dbus_message_iter_init(reply, &iter) ||
3819 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
3820 log_error("Failed to parse reply.");
3821 r = -EIO;
3822 goto finish;
3823 }
3824
3825 dbus_message_iter_recurse(&iter, &sub);
3826
3827 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_ARRAY ||
3828 dbus_message_iter_get_element_type(&sub) != DBUS_TYPE_STRING) {
3829 log_error("Failed to parse reply.");
3830 r = -EIO;
3831 goto finish;
3832 }
3833
3834 dbus_message_iter_recurse(&sub, &sub2);
3835
3836 while (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_INVALID) {
3837 const char *text;
3838
3839 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_STRING) {
3840 log_error("Failed to parse reply.");
3841 r = -EIO;
3842 goto finish;
3843 }
3844
3845 dbus_message_iter_get_basic(&sub2, &text);
3846 printf("%s\n", text);
3847
3848 dbus_message_iter_next(&sub2);
3849 }
3850
3851 r = 0;
3852
3853 finish:
3854 if (m)
3855 dbus_message_unref(m);
3856
3857 if (reply)
3858 dbus_message_unref(reply);
3859
3860 dbus_error_free(&error);
3861
3862 return r;
3863 }
3864
3865 static int switch_root(DBusConnection *bus, char **args) {
3866 DBusMessage *m = NULL, *reply = NULL;
3867 unsigned l;
3868 const char *root, *init;
3869 DBusError error;
3870 int r;
3871
3872 dbus_error_init(&error);
3873
3874 l = strv_length(args);
3875 if (l < 2 || l > 3) {
3876 log_error("Wrong number of arguments.");
3877 return -EINVAL;
3878 }
3879
3880 root = args[1];
3881 init = l >= 3 ? args[2] : "";
3882
3883 m = dbus_message_new_method_call(
3884 "org.freedesktop.systemd1",
3885 "/org/freedesktop/systemd1",
3886 "org.freedesktop.systemd1.Manager",
3887 "SwitchRoot");
3888 if (!m) {
3889 log_error("Could not allocate message.");
3890 return -ENOMEM;
3891 }
3892
3893 if (!dbus_message_append_args(
3894 m,
3895 DBUS_TYPE_STRING, &root,
3896 DBUS_TYPE_STRING, &init,
3897 DBUS_TYPE_INVALID)) {
3898 log_error("Could not append arguments to message.");
3899 r = -ENOMEM;
3900 goto finish;
3901 }
3902
3903 reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
3904 if (!reply) {
3905 log_error("Failed to issue method call: %s", bus_error_message(&error));
3906 r = -EIO;
3907 goto finish;
3908 }
3909
3910 r = 0;
3911
3912 finish:
3913 if (m)
3914 dbus_message_unref(m);
3915
3916 if (reply)
3917 dbus_message_unref(reply);
3918
3919 dbus_error_free(&error);
3920
3921 return r;
3922 }
3923
3924 static int set_environment(DBusConnection *bus, char **args) {
3925 DBusMessage *m = NULL, *reply = NULL;
3926 DBusError error;
3927 int r;
3928 const char *method;
3929 DBusMessageIter iter, sub;
3930 char **name;
3931
3932 dbus_error_init(&error);
3933
3934 method = streq(args[0], "set-environment")
3935 ? "SetEnvironment"
3936 : "UnsetEnvironment";
3937
3938 if (!(m = dbus_message_new_method_call(
3939 "org.freedesktop.systemd1",
3940 "/org/freedesktop/systemd1",
3941 "org.freedesktop.systemd1.Manager",
3942 method))) {
3943
3944 log_error("Could not allocate message.");
3945 return -ENOMEM;
3946 }
3947
3948 dbus_message_iter_init_append(m, &iter);
3949
3950 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "s", &sub)) {
3951 log_error("Could not append arguments to message.");
3952 r = -ENOMEM;
3953 goto finish;
3954 }
3955
3956 STRV_FOREACH(name, args+1)
3957 if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, name)) {
3958 log_error("Could not append arguments to message.");
3959 r = -ENOMEM;
3960 goto finish;
3961 }
3962
3963 if (!dbus_message_iter_close_container(&iter, &sub)) {
3964 log_error("Could not append arguments to message.");
3965 r = -ENOMEM;
3966 goto finish;
3967 }
3968
3969 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3970 log_error("Failed to issue method call: %s", bus_error_message(&error));
3971 r = -EIO;
3972 goto finish;
3973 }
3974
3975 r = 0;
3976
3977 finish:
3978 if (m)
3979 dbus_message_unref(m);
3980
3981 if (reply)
3982 dbus_message_unref(reply);
3983
3984 dbus_error_free(&error);
3985
3986 return r;
3987 }
3988
3989 static int enable_sysv_units(char **args) {
3990 int r = 0;
3991
3992 #if defined (HAVE_SYSV_COMPAT) && (defined(TARGET_FEDORA) || defined(TARGET_MANDRIVA) || defined(TARGET_SUSE) || defined(TARGET_MEEGO) || defined(TARGET_ALTLINUX) || defined(TARGET_MAGEIA))
3993 const char *verb = args[0];
3994 unsigned f = 1, t = 1;
3995 LookupPaths paths;
3996
3997 if (arg_scope != UNIT_FILE_SYSTEM)
3998 return 0;
3999
4000 if (!streq(verb, "enable") &&
4001 !streq(verb, "disable") &&
4002 !streq(verb, "is-enabled"))
4003 return 0;
4004
4005 /* Processes all SysV units, and reshuffles the array so that
4006 * afterwards only the native units remain */
4007
4008 zero(paths);
4009 r = lookup_paths_init(&paths, MANAGER_SYSTEM, false, NULL, NULL, NULL);
4010 if (r < 0)
4011 return r;
4012
4013 r = 0;
4014 for (f = 1; args[f]; f++) {
4015 const char *name;
4016 char *p;
4017 bool found_native = false, found_sysv;
4018 unsigned c = 1;
4019 const char *argv[6] = { "/sbin/chkconfig", NULL, NULL, NULL, NULL };
4020 char **k, *l, *q = NULL;
4021 int j;
4022 pid_t pid;
4023 siginfo_t status;
4024
4025 name = args[f];
4026
4027 if (!endswith(name, ".service"))
4028 continue;
4029
4030 if (path_is_absolute(name))
4031 continue;
4032
4033 STRV_FOREACH(k, paths.unit_path) {
4034 p = NULL;
4035
4036 if (!isempty(arg_root))
4037 asprintf(&p, "%s/%s/%s", arg_root, *k, name);
4038 else
4039 asprintf(&p, "%s/%s", *k, name);
4040
4041 if (!p) {
4042 log_error("No memory");
4043 r = -ENOMEM;
4044 goto finish;
4045 }
4046
4047 found_native = access(p, F_OK) >= 0;
4048 free(p);
4049
4050 if (found_native)
4051 break;
4052 }
4053
4054 if (found_native)
4055 continue;
4056
4057 p = NULL;
4058 if (!isempty(arg_root))
4059 asprintf(&p, "%s/" SYSTEM_SYSVINIT_PATH "/%s", arg_root, name);
4060 else
4061 asprintf(&p, SYSTEM_SYSVINIT_PATH "/%s", name);
4062 if (!p) {
4063 log_error("No memory");
4064 r = -ENOMEM;
4065 goto finish;
4066 }
4067
4068 p[strlen(p) - sizeof(".service") + 1] = 0;
4069 found_sysv = access(p, F_OK) >= 0;
4070
4071 if (!found_sysv) {
4072 free(p);
4073 continue;
4074 }
4075
4076 /* Mark this entry, so that we don't try enabling it as native unit */
4077 args[f] = (char*) "";
4078
4079 log_info("%s is not a native service, redirecting to /sbin/chkconfig.", name);
4080
4081 if (!isempty(arg_root))
4082 argv[c++] = q = strappend("--root=", arg_root);
4083
4084 argv[c++] = path_get_file_name(p);
4085 argv[c++] =
4086 streq(verb, "enable") ? "on" :
4087 streq(verb, "disable") ? "off" : "--level=5";
4088 argv[c] = NULL;
4089
4090 l = strv_join((char**)argv, " ");
4091 if (!l) {
4092 log_error("No memory.");
4093 free(q);
4094 free(p);
4095 r = -ENOMEM;
4096 goto finish;
4097 }
4098
4099 log_info("Executing %s", l);
4100 free(l);
4101
4102 pid = fork();
4103 if (pid < 0) {
4104 log_error("Failed to fork: %m");
4105 free(p);
4106 free(q);
4107 r = -errno;
4108 goto finish;
4109 } else if (pid == 0) {
4110 /* Child */
4111
4112 execv(argv[0], (char**) argv);
4113 _exit(EXIT_FAILURE);
4114 }
4115
4116 free(p);
4117 free(q);
4118
4119 j = wait_for_terminate(pid, &status);
4120 if (j < 0) {
4121 log_error("Failed to wait for child: %s", strerror(-r));
4122 r = j;
4123 goto finish;
4124 }
4125
4126 if (status.si_code == CLD_EXITED) {
4127 if (streq(verb, "is-enabled")) {
4128 if (status.si_status == 0) {
4129 if (!arg_quiet)
4130 puts("enabled");
4131 r = 1;
4132 } else {
4133 if (!arg_quiet)
4134 puts("disabled");
4135 }
4136
4137 } else if (status.si_status != 0) {
4138 r = -EINVAL;
4139 goto finish;
4140 }
4141 } else {
4142 r = -EPROTO;
4143 goto finish;
4144 }
4145 }
4146
4147 finish:
4148 lookup_paths_free(&paths);
4149
4150 /* Drop all SysV units */
4151 for (f = 1, t = 1; args[f]; f++) {
4152
4153 if (isempty(args[f]))
4154 continue;
4155
4156 args[t++] = args[f];
4157 }
4158
4159 args[t] = NULL;
4160
4161 #endif
4162 return r;
4163 }
4164
4165 static int enable_unit(DBusConnection *bus, char **args) {
4166 const char *verb = args[0];
4167 UnitFileChange *changes = NULL;
4168 unsigned n_changes = 0, i;
4169 int carries_install_info = -1;
4170 DBusMessage *m = NULL, *reply = NULL;
4171 int r;
4172 DBusError error;
4173
4174 r = enable_sysv_units(args);
4175 if (r < 0)
4176 return r;
4177
4178 if (!args[1])
4179 return 0;
4180
4181 dbus_error_init(&error);
4182
4183 if (!bus || avoid_bus()) {
4184 if (streq(verb, "enable")) {
4185 r = unit_file_enable(arg_scope, arg_runtime, arg_root, args+1, arg_force, &changes, &n_changes);
4186 carries_install_info = r;
4187 } else if (streq(verb, "disable"))
4188 r = unit_file_disable(arg_scope, arg_runtime, arg_root, args+1, &changes, &n_changes);
4189 else if (streq(verb, "reenable")) {
4190 r = unit_file_reenable(arg_scope, arg_runtime, arg_root, args+1, arg_force, &changes, &n_changes);
4191 carries_install_info = r;
4192 } else if (streq(verb, "link"))
4193 r = unit_file_link(arg_scope, arg_runtime, arg_root, args+1, arg_force, &changes, &n_changes);
4194 else if (streq(verb, "preset")) {
4195 r = unit_file_preset(arg_scope, arg_runtime, arg_root, args+1, arg_force, &changes, &n_changes);
4196 carries_install_info = r;
4197 } else if (streq(verb, "mask"))
4198 r = unit_file_mask(arg_scope, arg_runtime, arg_root, args+1, arg_force, &changes, &n_changes);
4199 else if (streq(verb, "unmask"))
4200 r = unit_file_unmask(arg_scope, arg_runtime, arg_root, args+1, &changes, &n_changes);
4201 else
4202 assert_not_reached("Unknown verb");
4203
4204 if (r < 0) {
4205 log_error("Operation failed: %s", strerror(-r));
4206 goto finish;
4207 }
4208
4209 if (!arg_quiet) {
4210 for (i = 0; i < n_changes; i++) {
4211 if (changes[i].type == UNIT_FILE_SYMLINK)
4212 log_info("ln -s '%s' '%s'", changes[i].source, changes[i].path);
4213 else
4214 log_info("rm '%s'", changes[i].path);
4215 }
4216 }
4217
4218 } else {
4219 const char *method;
4220 bool send_force = true, expect_carries_install_info = false;
4221 dbus_bool_t a, b;
4222 DBusMessageIter iter, sub, sub2;
4223
4224 if (streq(verb, "enable")) {
4225 method = "EnableUnitFiles";
4226 expect_carries_install_info = true;
4227 } else if (streq(verb, "disable")) {
4228 method = "DisableUnitFiles";
4229 send_force = false;
4230 } else if (streq(verb, "reenable")) {
4231 method = "ReenableUnitFiles";
4232 expect_carries_install_info = true;
4233 } else if (streq(verb, "link"))
4234 method = "LinkUnitFiles";
4235 else if (streq(verb, "preset")) {
4236 method = "PresetUnitFiles";
4237 expect_carries_install_info = true;
4238 } else if (streq(verb, "mask"))
4239 method = "MaskUnitFiles";
4240 else if (streq(verb, "unmask")) {
4241 method = "UnmaskUnitFiles";
4242 send_force = false;
4243 } else
4244 assert_not_reached("Unknown verb");
4245
4246 m = dbus_message_new_method_call(
4247 "org.freedesktop.systemd1",
4248 "/org/freedesktop/systemd1",
4249 "org.freedesktop.systemd1.Manager",
4250 method);
4251 if (!m) {
4252 log_error("Out of memory");
4253 r = -ENOMEM;
4254 goto finish;
4255 }
4256
4257 dbus_message_iter_init_append(m, &iter);
4258
4259 r = bus_append_strv_iter(&iter, args+1);
4260 if (r < 0) {
4261 log_error("Failed to append unit files.");
4262 goto finish;
4263 }
4264
4265 a = arg_runtime;
4266 if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &a)) {
4267 log_error("Failed to append runtime boolean.");
4268 r = -ENOMEM;
4269 goto finish;
4270 }
4271
4272 if (send_force) {
4273 b = arg_force;
4274
4275 if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &b)) {
4276 log_error("Failed to append force boolean.");
4277 r = -ENOMEM;
4278 goto finish;
4279 }
4280 }
4281
4282 reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
4283 if (!reply) {
4284 log_error("Failed to issue method call: %s", bus_error_message(&error));
4285 r = -EIO;
4286 goto finish;
4287 }
4288
4289 if (!dbus_message_iter_init(reply, &iter)) {
4290 log_error("Failed to initialize iterator.");
4291 goto finish;
4292 }
4293
4294 if (expect_carries_install_info) {
4295 r = bus_iter_get_basic_and_next(&iter, DBUS_TYPE_BOOLEAN, &b, true);
4296 if (r < 0) {
4297 log_error("Failed to parse reply.");
4298 goto finish;
4299 }
4300
4301 carries_install_info = b;
4302 }
4303
4304 if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
4305 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
4306 log_error("Failed to parse reply.");
4307 r = -EIO;
4308 goto finish;
4309 }
4310
4311 dbus_message_iter_recurse(&iter, &sub);
4312 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
4313 const char *type, *path, *source;
4314
4315 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
4316 log_error("Failed to parse reply.");
4317 r = -EIO;
4318 goto finish;
4319 }
4320
4321 dbus_message_iter_recurse(&sub, &sub2);
4322
4323 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) < 0 ||
4324 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, true) < 0 ||
4325 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &source, false) < 0) {
4326 log_error("Failed to parse reply.");
4327 r = -EIO;
4328 goto finish;
4329 }
4330
4331 if (!arg_quiet) {
4332 if (streq(type, "symlink"))
4333 log_info("ln -s '%s' '%s'", source, path);
4334 else
4335 log_info("rm '%s'", path);
4336 }
4337
4338 dbus_message_iter_next(&sub);
4339 }
4340
4341 /* Try to reload if enabeld */
4342 if (!arg_no_reload)
4343 r = daemon_reload(bus, args);
4344 }
4345
4346 if (carries_install_info == 0)
4347 log_warning("Warning: unit files do not carry install information. No operation executed.");
4348
4349 finish:
4350 if (m)
4351 dbus_message_unref(m);
4352
4353 if (reply)
4354 dbus_message_unref(reply);
4355
4356 unit_file_changes_free(changes, n_changes);
4357
4358 dbus_error_free(&error);
4359 return r;
4360 }
4361
4362 static int unit_is_enabled(DBusConnection *bus, char **args) {
4363 DBusError error;
4364 int r;
4365 DBusMessage *m = NULL, *reply = NULL;
4366 bool enabled;
4367 char **name;
4368
4369 dbus_error_init(&error);
4370
4371 r = enable_sysv_units(args);
4372 if (r < 0)
4373 return r;
4374
4375 enabled = r > 0;
4376
4377 if (!bus || avoid_bus()) {
4378
4379 STRV_FOREACH(name, args+1) {
4380 UnitFileState state;
4381
4382 state = unit_file_get_state(arg_scope, arg_root, *name);
4383 if (state < 0) {
4384 r = state;
4385 goto finish;
4386 }
4387
4388 if (state == UNIT_FILE_ENABLED ||
4389 state == UNIT_FILE_ENABLED_RUNTIME ||
4390 state == UNIT_FILE_STATIC)
4391 enabled = true;
4392
4393 if (!arg_quiet)
4394 puts(unit_file_state_to_string(state));
4395 }
4396
4397 } else {
4398 STRV_FOREACH(name, args+1) {
4399 const char *s;
4400
4401 m = dbus_message_new_method_call(
4402 "org.freedesktop.systemd1",
4403 "/org/freedesktop/systemd1",
4404 "org.freedesktop.systemd1.Manager",
4405 "GetUnitFileState");
4406 if (!m) {
4407 log_error("Out of memory");
4408 r = -ENOMEM;
4409 goto finish;
4410 }
4411
4412 if (!dbus_message_append_args(m,
4413 DBUS_TYPE_STRING, name,
4414 DBUS_TYPE_INVALID)) {
4415 log_error("Could not append arguments to message.");
4416 r = -ENOMEM;
4417 goto finish;
4418 }
4419
4420 reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
4421 if (!reply) {
4422 log_error("Failed to issue method call: %s", bus_error_message(&error));
4423 r = -EIO;
4424 goto finish;
4425 }
4426
4427 if (!dbus_message_get_args(reply, &error,
4428 DBUS_TYPE_STRING, &s,
4429 DBUS_TYPE_INVALID)) {
4430 log_error("Failed to parse reply: %s", bus_error_message(&error));
4431 r = -EIO;
4432 goto finish;
4433 }
4434
4435 dbus_message_unref(m);
4436 dbus_message_unref(reply);
4437 m = reply = NULL;
4438
4439 if (streq(s, "enabled") ||
4440 streq(s, "enabled-runtime") ||
4441 streq(s, "static"))
4442 enabled = true;
4443
4444 if (!arg_quiet)
4445 puts(s);
4446 }
4447 }
4448
4449 r = enabled ? 0 : 1;
4450
4451 finish:
4452 if (m)
4453 dbus_message_unref(m);
4454
4455 if (reply)
4456 dbus_message_unref(reply);
4457
4458 dbus_error_free(&error);
4459 return r;
4460 }
4461
4462 static int systemctl_help(void) {
4463
4464 pager_open_if_enabled();
4465
4466 printf("%s [OPTIONS...] {COMMAND} ...\n\n"
4467 "Query or send control commands to the systemd manager.\n\n"
4468 " -h --help Show this help\n"
4469 " --version Show package version\n"
4470 " -t --type=TYPE List only units of a particular type\n"
4471 " -p --property=NAME Show only properties by this name\n"
4472 " -a --all Show all units/properties, including dead/empty ones\n"
4473 " --failed Show only failed units\n"
4474 " --full Don't ellipsize unit names on output\n"
4475 " --fail When queueing a new job, fail if conflicting jobs are\n"
4476 " pending\n"
4477 " --ignore-dependencies\n"
4478 " When queueing a new job, ignore all its dependencies\n"
4479 " --kill-who=WHO Who to send signal to\n"
4480 " -s --signal=SIGNAL Which signal to send\n"
4481 " -H --host=[USER@]HOST\n"
4482 " Show information for remote host\n"
4483 " -P --privileged Acquire privileges before execution\n"
4484 " -q --quiet Suppress output\n"
4485 " --no-block Do not wait until operation finished\n"
4486 " --no-wall Don't send wall message before halt/power-off/reboot\n"
4487 " --no-reload When enabling/disabling unit files, don't reload daemon\n"
4488 " configuration\n"
4489 " --no-legend Do not print a legend (column headers and hints)\n"
4490 " --no-pager Do not pipe output into a pager\n"
4491 " --no-ask-password\n"
4492 " Do not ask for system passwords\n"
4493 " --order When generating graph for dot, show only order\n"
4494 " --require When generating graph for dot, show only requirement\n"
4495 " --system Connect to system manager\n"
4496 " --user Connect to user service manager\n"
4497 " --global Enable/disable unit files globally\n"
4498 " -f --force When enabling unit files, override existing symlinks\n"
4499 " When shutting down, execute action immediately\n"
4500 " --root=PATH Enable unit files in the specified root directory\n"
4501 " --runtime Enable unit files only temporarily until next reboot\n"
4502 " -n --lines=INTEGER Journal entries to show\n"
4503 " --follow Follow journal\n"
4504 " -o --output=STRING Change journal output mode (short, short-monotonic,\n"
4505 " verbose, export, json, cat)\n\n"
4506 "Unit Commands:\n"
4507 " list-units List loaded units\n"
4508 " start [NAME...] Start (activate) one or more units\n"
4509 " stop [NAME...] Stop (deactivate) one or more units\n"
4510 " reload [NAME...] Reload one or more units\n"
4511 " restart [NAME...] Start or restart one or more units\n"
4512 " try-restart [NAME...] Restart one or more units if active\n"
4513 " reload-or-restart [NAME...] Reload one or more units is possible,\n"
4514 " otherwise start or restart\n"
4515 " reload-or-try-restart [NAME...] Reload one or more units is possible,\n"
4516 " otherwise restart if active\n"
4517 " isolate [NAME] Start one unit and stop all others\n"
4518 " kill [NAME...] Send signal to processes of a unit\n"
4519 " is-active [NAME...] Check whether units are active\n"
4520 " status [NAME...|PID...] Show runtime status of one or more units\n"
4521 " show [NAME...|JOB...] Show properties of one or more\n"
4522 " units/jobs or the manager\n"
4523 " help [NAME...|PID...] Show manual for one or more units\n"
4524 " reset-failed [NAME...] Reset failed state for all, one, or more\n"
4525 " units\n"
4526 " load [NAME...] Load one or more units\n\n"
4527 "Unit File Commands:\n"
4528 " list-unit-files List installed unit files\n"
4529 " enable [NAME...] Enable one or more unit files\n"
4530 " disable [NAME...] Disable one or more unit files\n"
4531 " reenable [NAME...] Reenable one or more unit files\n"
4532 " preset [NAME...] Enable/disable one or more unit files\n"
4533 " based on preset configuration\n"
4534 " mask [NAME...] Mask one or more units\n"
4535 " unmask [NAME...] Unmask one or more units\n"
4536 " link [PATH...] Link one or more units files into\n"
4537 " the search path\n"
4538 " is-enabled [NAME...] Check whether unit files are enabled\n\n"
4539 "Job Commands:\n"
4540 " list-jobs List jobs\n"
4541 " cancel [JOB...] Cancel all, one, or more jobs\n\n"
4542 "Status Commands:\n"
4543 " dump Dump server status\n"
4544 " dot Dump dependency graph for dot(1)\n\n"
4545 "Snapshot Commands:\n"
4546 " snapshot [NAME] Create a snapshot\n"
4547 " delete [NAME...] Remove one or more snapshots\n\n"
4548 "Environment Commands:\n"
4549 " show-environment Dump environment\n"
4550 " set-environment [NAME=VALUE...] Set one or more environment variables\n"
4551 " unset-environment [NAME...] Unset one or more environment variables\n\n"
4552 "Manager Lifecycle Commands:\n"
4553 " daemon-reload Reload systemd manager configuration\n"
4554 " daemon-reexec Reexecute systemd manager\n\n"
4555 "System Commands:\n"
4556 " default Enter system default mode\n"
4557 " rescue Enter system rescue mode\n"
4558 " emergency Enter system emergency mode\n"
4559 " halt Shut down and halt the system\n"
4560 " poweroff Shut down and power-off the system\n"
4561 " reboot Shut down and reboot the system\n"
4562 " kexec Shut down and reboot the system with kexec\n"
4563 " exit Request user instance exit\n"
4564 " switch-root [ROOT] [INIT] Change to a different root file system\n"
4565 " suspend Suspend the system\n"
4566 " hibernate Hibernate the system\n",
4567 program_invocation_short_name);
4568
4569 return 0;
4570 }
4571
4572 static int halt_help(void) {
4573
4574 printf("%s [OPTIONS...]\n\n"
4575 "%s the system.\n\n"
4576 " --help Show this help\n"
4577 " --halt Halt the machine\n"
4578 " -p --poweroff Switch off the machine\n"
4579 " --reboot Reboot the machine\n"
4580 " -f --force Force immediate halt/power-off/reboot\n"
4581 " -w --wtmp-only Don't halt/power-off/reboot, just write wtmp record\n"
4582 " -d --no-wtmp Don't write wtmp record\n"
4583 " -n --no-sync Don't sync before halt/power-off/reboot\n"
4584 " --no-wall Don't send wall message before halt/power-off/reboot\n",
4585 program_invocation_short_name,
4586 arg_action == ACTION_REBOOT ? "Reboot" :
4587 arg_action == ACTION_POWEROFF ? "Power off" :
4588 "Halt");
4589
4590 return 0;
4591 }
4592
4593 static int shutdown_help(void) {
4594
4595 printf("%s [OPTIONS...] [TIME] [WALL...]\n\n"
4596 "Shut down the system.\n\n"
4597 " --help Show this help\n"
4598 " -H --halt Halt the machine\n"
4599 " -P --poweroff Power-off the machine\n"
4600 " -r --reboot Reboot the machine\n"
4601 " -h Equivalent to --poweroff, overridden by --halt\n"
4602 " -k Don't halt/power-off/reboot, just send warnings\n"
4603 " --no-wall Don't send wall message before halt/power-off/reboot\n"
4604 " -c Cancel a pending shutdown\n",
4605 program_invocation_short_name);
4606
4607 return 0;
4608 }
4609
4610 static int telinit_help(void) {
4611
4612 printf("%s [OPTIONS...] {COMMAND}\n\n"
4613 "Send control commands to the init daemon.\n\n"
4614 " --help Show this help\n"
4615 " --no-wall Don't send wall message before halt/power-off/reboot\n\n"
4616 "Commands:\n"
4617 " 0 Power-off the machine\n"
4618 " 6 Reboot the machine\n"
4619 " 2, 3, 4, 5 Start runlevelX.target unit\n"
4620 " 1, s, S Enter rescue mode\n"
4621 " q, Q Reload init daemon configuration\n"
4622 " u, U Reexecute init daemon\n",
4623 program_invocation_short_name);
4624
4625 return 0;
4626 }
4627
4628 static int runlevel_help(void) {
4629
4630 printf("%s [OPTIONS...]\n\n"
4631 "Prints the previous and current runlevel of the init system.\n\n"
4632 " --help Show this help\n",
4633 program_invocation_short_name);
4634
4635 return 0;
4636 }
4637
4638 static int systemctl_parse_argv(int argc, char *argv[]) {
4639
4640 enum {
4641 ARG_FAIL = 0x100,
4642 ARG_IGNORE_DEPENDENCIES,
4643 ARG_VERSION,
4644 ARG_USER,
4645 ARG_SYSTEM,
4646 ARG_GLOBAL,
4647 ARG_NO_BLOCK,
4648 ARG_NO_LEGEND,
4649 ARG_NO_PAGER,
4650 ARG_NO_WALL,
4651 ARG_ORDER,
4652 ARG_REQUIRE,
4653 ARG_ROOT,
4654 ARG_FULL,
4655 ARG_NO_RELOAD,
4656 ARG_KILL_MODE,
4657 ARG_KILL_WHO,
4658 ARG_NO_ASK_PASSWORD,
4659 ARG_FAILED,
4660 ARG_RUNTIME,
4661 ARG_FOLLOW,
4662 ARG_FORCE
4663 };
4664
4665 static const struct option options[] = {
4666 { "help", no_argument, NULL, 'h' },
4667 { "version", no_argument, NULL, ARG_VERSION },
4668 { "type", required_argument, NULL, 't' },
4669 { "property", required_argument, NULL, 'p' },
4670 { "all", no_argument, NULL, 'a' },
4671 { "failed", no_argument, NULL, ARG_FAILED },
4672 { "full", no_argument, NULL, ARG_FULL },
4673 { "fail", no_argument, NULL, ARG_FAIL },
4674 { "ignore-dependencies", no_argument, NULL, ARG_IGNORE_DEPENDENCIES },
4675 { "user", no_argument, NULL, ARG_USER },
4676 { "system", no_argument, NULL, ARG_SYSTEM },
4677 { "global", no_argument, NULL, ARG_GLOBAL },
4678 { "no-block", no_argument, NULL, ARG_NO_BLOCK },
4679 { "no-legend", no_argument, NULL, ARG_NO_LEGEND },
4680 { "no-pager", no_argument, NULL, ARG_NO_PAGER },
4681 { "no-wall", no_argument, NULL, ARG_NO_WALL },
4682 { "quiet", no_argument, NULL, 'q' },
4683 { "order", no_argument, NULL, ARG_ORDER },
4684 { "require", no_argument, NULL, ARG_REQUIRE },
4685 { "root", required_argument, NULL, ARG_ROOT },
4686 { "force", no_argument, NULL, ARG_FORCE },
4687 { "no-reload", no_argument, NULL, ARG_NO_RELOAD },
4688 { "kill-mode", required_argument, NULL, ARG_KILL_MODE }, /* undocumented on purpose */
4689 { "kill-who", required_argument, NULL, ARG_KILL_WHO },
4690 { "signal", required_argument, NULL, 's' },
4691 { "no-ask-password", no_argument, NULL, ARG_NO_ASK_PASSWORD },
4692 { "host", required_argument, NULL, 'H' },
4693 { "privileged",no_argument, NULL, 'P' },
4694 { "runtime", no_argument, NULL, ARG_RUNTIME },
4695 { "lines", required_argument, NULL, 'n' },
4696 { "follow", no_argument, NULL, ARG_FOLLOW },
4697 { "output", required_argument, NULL, 'o' },
4698 { NULL, 0, NULL, 0 }
4699 };
4700
4701 int c;
4702
4703 assert(argc >= 0);
4704 assert(argv);
4705
4706 while ((c = getopt_long(argc, argv, "ht:p:aqfs:H:Pn:o:", options, NULL)) >= 0) {
4707
4708 switch (c) {
4709
4710 case 'h':
4711 systemctl_help();
4712 return 0;
4713
4714 case ARG_VERSION:
4715 puts(PACKAGE_STRING);
4716 puts(DISTRIBUTION);
4717 puts(SYSTEMD_FEATURES);
4718 return 0;
4719
4720 case 't':
4721 arg_type = optarg;
4722 break;
4723
4724 case 'p': {
4725 char **l;
4726
4727 if (!(l = strv_append(arg_property, optarg)))
4728 return -ENOMEM;
4729
4730 strv_free(arg_property);
4731 arg_property = l;
4732
4733 /* If the user asked for a particular
4734 * property, show it to him, even if it is
4735 * empty. */
4736 arg_all = true;
4737 break;
4738 }
4739
4740 case 'a':
4741 arg_all = true;
4742 break;
4743
4744 case ARG_FAIL:
4745 arg_job_mode = "fail";
4746 break;
4747
4748 case ARG_IGNORE_DEPENDENCIES:
4749 arg_job_mode = "ignore-dependencies";
4750 break;
4751
4752 case ARG_USER:
4753 arg_scope = UNIT_FILE_USER;
4754 break;
4755
4756 case ARG_SYSTEM:
4757 arg_scope = UNIT_FILE_SYSTEM;
4758 break;
4759
4760 case ARG_GLOBAL:
4761 arg_scope = UNIT_FILE_GLOBAL;
4762 break;
4763
4764 case ARG_NO_BLOCK:
4765 arg_no_block = true;
4766 break;
4767
4768 case ARG_NO_LEGEND:
4769 arg_no_legend = true;
4770 break;
4771
4772 case ARG_NO_PAGER:
4773 arg_no_pager = true;
4774 break;
4775
4776 case ARG_NO_WALL:
4777 arg_no_wall = true;
4778 break;
4779
4780 case ARG_ORDER:
4781 arg_dot = DOT_ORDER;
4782 break;
4783
4784 case ARG_REQUIRE:
4785 arg_dot = DOT_REQUIRE;
4786 break;
4787
4788 case ARG_ROOT:
4789 arg_root = optarg;
4790 break;
4791
4792 case ARG_FULL:
4793 arg_full = true;
4794 break;
4795
4796 case ARG_FAILED:
4797 arg_failed = true;
4798 break;
4799
4800 case 'q':
4801 arg_quiet = true;
4802 break;
4803
4804 case ARG_FORCE:
4805 arg_force ++;
4806 break;
4807
4808 case ARG_FOLLOW:
4809 arg_follow = true;
4810 break;
4811
4812 case 'f':
4813 /* -f is short for both --follow and --force! */
4814 arg_force ++;
4815 arg_follow = true;
4816 break;
4817
4818 case ARG_NO_RELOAD:
4819 arg_no_reload = true;
4820 break;
4821
4822 case ARG_KILL_WHO:
4823 arg_kill_who = optarg;
4824 break;
4825
4826 case ARG_KILL_MODE:
4827 arg_kill_mode = optarg;
4828 break;
4829
4830 case 's':
4831 if ((arg_signal = signal_from_string_try_harder(optarg)) < 0) {
4832 log_error("Failed to parse signal string %s.", optarg);
4833 return -EINVAL;
4834 }
4835 break;
4836
4837 case ARG_NO_ASK_PASSWORD:
4838 arg_ask_password = false;
4839 break;
4840
4841 case 'P':
4842 arg_transport = TRANSPORT_POLKIT;
4843 break;
4844
4845 case 'H':
4846 arg_transport = TRANSPORT_SSH;
4847 arg_host = optarg;
4848 break;
4849
4850 case ARG_RUNTIME:
4851 arg_runtime = true;
4852 break;
4853
4854 case 'n':
4855 if (safe_atou(optarg, &arg_lines) < 0) {
4856 log_error("Failed to parse lines '%s'", optarg);
4857 return -EINVAL;
4858 }
4859 break;
4860
4861 case 'o':
4862 arg_output = output_mode_from_string(optarg);
4863 if (arg_output < 0) {
4864 log_error("Unknown output '%s'.", optarg);
4865 return -EINVAL;
4866 }
4867 break;
4868
4869 case '?':
4870 return -EINVAL;
4871
4872 default:
4873 log_error("Unknown option code %c", c);
4874 return -EINVAL;
4875 }
4876 }
4877
4878 if (arg_transport != TRANSPORT_NORMAL && arg_scope != UNIT_FILE_SYSTEM) {
4879 log_error("Cannot access user instance remotely.");
4880 return -EINVAL;
4881 }
4882
4883 return 1;
4884 }
4885
4886 static int halt_parse_argv(int argc, char *argv[]) {
4887
4888 enum {
4889 ARG_HELP = 0x100,
4890 ARG_HALT,
4891 ARG_REBOOT,
4892 ARG_NO_WALL
4893 };
4894
4895 static const struct option options[] = {
4896 { "help", no_argument, NULL, ARG_HELP },
4897 { "halt", no_argument, NULL, ARG_HALT },
4898 { "poweroff", no_argument, NULL, 'p' },
4899 { "reboot", no_argument, NULL, ARG_REBOOT },
4900 { "force", no_argument, NULL, 'f' },
4901 { "wtmp-only", no_argument, NULL, 'w' },
4902 { "no-wtmp", no_argument, NULL, 'd' },
4903 { "no-sync", no_argument, NULL, 'n' },
4904 { "no-wall", no_argument, NULL, ARG_NO_WALL },
4905 { NULL, 0, NULL, 0 }
4906 };
4907
4908 int c, runlevel;
4909
4910 assert(argc >= 0);
4911 assert(argv);
4912
4913 if (utmp_get_runlevel(&runlevel, NULL) >= 0)
4914 if (runlevel == '0' || runlevel == '6')
4915 arg_force = 2;
4916
4917 while ((c = getopt_long(argc, argv, "pfwdnih", options, NULL)) >= 0) {
4918 switch (c) {
4919
4920 case ARG_HELP:
4921 halt_help();
4922 return 0;
4923
4924 case ARG_HALT:
4925 arg_action = ACTION_HALT;
4926 break;
4927
4928 case 'p':
4929 if (arg_action != ACTION_REBOOT)
4930 arg_action = ACTION_POWEROFF;
4931 break;
4932
4933 case ARG_REBOOT:
4934 arg_action = ACTION_REBOOT;
4935 break;
4936
4937 case 'f':
4938 arg_force = 2;
4939 break;
4940
4941 case 'w':
4942 arg_dry = true;
4943 break;
4944
4945 case 'd':
4946 arg_no_wtmp = true;
4947 break;
4948
4949 case 'n':
4950 arg_no_sync = true;
4951 break;
4952
4953 case ARG_NO_WALL:
4954 arg_no_wall = true;
4955 break;
4956
4957 case 'i':
4958 case 'h':
4959 /* Compatibility nops */
4960 break;
4961
4962 case '?':
4963 return -EINVAL;
4964
4965 default:
4966 log_error("Unknown option code %c", c);
4967 return -EINVAL;
4968 }
4969 }
4970
4971 if (optind < argc) {
4972 log_error("Too many arguments.");
4973 return -EINVAL;
4974 }
4975
4976 return 1;
4977 }
4978
4979 static int parse_time_spec(const char *t, usec_t *_u) {
4980 assert(t);
4981 assert(_u);
4982
4983 if (streq(t, "now"))
4984 *_u = 0;
4985 else if (!strchr(t, ':')) {
4986 uint64_t u;
4987
4988 if (safe_atou64(t, &u) < 0)
4989 return -EINVAL;
4990
4991 *_u = now(CLOCK_REALTIME) + USEC_PER_MINUTE * u;
4992 } else {
4993 char *e = NULL;
4994 long hour, minute;
4995 struct tm tm;
4996 time_t s;
4997 usec_t n;
4998
4999 errno = 0;
5000 hour = strtol(t, &e, 10);
5001 if (errno != 0 || *e != ':' || hour < 0 || hour > 23)
5002 return -EINVAL;
5003
5004 minute = strtol(e+1, &e, 10);
5005 if (errno != 0 || *e != 0 || minute < 0 || minute > 59)
5006 return -EINVAL;
5007
5008 n = now(CLOCK_REALTIME);
5009 s = (time_t) (n / USEC_PER_SEC);
5010
5011 zero(tm);
5012 assert_se(localtime_r(&s, &tm));
5013
5014 tm.tm_hour = (int) hour;
5015 tm.tm_min = (int) minute;
5016 tm.tm_sec = 0;
5017
5018 assert_se(s = mktime(&tm));
5019
5020 *_u = (usec_t) s * USEC_PER_SEC;
5021
5022 while (*_u <= n)
5023 *_u += USEC_PER_DAY;
5024 }
5025
5026 return 0;
5027 }
5028
5029 static int shutdown_parse_argv(int argc, char *argv[]) {
5030
5031 enum {
5032 ARG_HELP = 0x100,
5033 ARG_NO_WALL
5034 };
5035
5036 static const struct option options[] = {
5037 { "help", no_argument, NULL, ARG_HELP },
5038 { "halt", no_argument, NULL, 'H' },
5039 { "poweroff", no_argument, NULL, 'P' },
5040 { "reboot", no_argument, NULL, 'r' },
5041 { "kexec", no_argument, NULL, 'K' }, /* not documented extension */
5042 { "no-wall", no_argument, NULL, ARG_NO_WALL },
5043 { NULL, 0, NULL, 0 }
5044 };
5045
5046 int c, r;
5047
5048 assert(argc >= 0);
5049 assert(argv);
5050
5051 while ((c = getopt_long(argc, argv, "HPrhkt:afFc", options, NULL)) >= 0) {
5052 switch (c) {
5053
5054 case ARG_HELP:
5055 shutdown_help();
5056 return 0;
5057
5058 case 'H':
5059 arg_action = ACTION_HALT;
5060 break;
5061
5062 case 'P':
5063 arg_action = ACTION_POWEROFF;
5064 break;
5065
5066 case 'r':
5067 if (kexec_loaded())
5068 arg_action = ACTION_KEXEC;
5069 else
5070 arg_action = ACTION_REBOOT;
5071 break;
5072
5073 case 'K':
5074 arg_action = ACTION_KEXEC;
5075 break;
5076
5077 case 'h':
5078 if (arg_action != ACTION_HALT)
5079 arg_action = ACTION_POWEROFF;
5080 break;
5081
5082 case 'k':
5083 arg_dry = true;
5084 break;
5085
5086 case ARG_NO_WALL:
5087 arg_no_wall = true;
5088 break;
5089
5090 case 't':
5091 case 'a':
5092 /* Compatibility nops */
5093 break;
5094
5095 case 'c':
5096 arg_action = ACTION_CANCEL_SHUTDOWN;
5097 break;
5098
5099 case '?':
5100 return -EINVAL;
5101
5102 default:
5103 log_error("Unknown option code %c", c);
5104 return -EINVAL;
5105 }
5106 }
5107
5108 if (argc > optind) {
5109 r = parse_time_spec(argv[optind], &arg_when);
5110 if (r < 0) {
5111 log_error("Failed to parse time specification: %s", argv[optind]);
5112 return r;
5113 }
5114 } else
5115 arg_when = now(CLOCK_REALTIME) + USEC_PER_MINUTE;
5116
5117 /* We skip the time argument */
5118 if (argc > optind + 1)
5119 arg_wall = argv + optind + 1;
5120
5121 optind = argc;
5122
5123 return 1;
5124 }
5125
5126 static int telinit_parse_argv(int argc, char *argv[]) {
5127
5128 enum {
5129 ARG_HELP = 0x100,
5130 ARG_NO_WALL
5131 };
5132
5133 static const struct option options[] = {
5134 { "help", no_argument, NULL, ARG_HELP },
5135 { "no-wall", no_argument, NULL, ARG_NO_WALL },
5136 { NULL, 0, NULL, 0 }
5137 };
5138
5139 static const struct {
5140 char from;
5141 enum action to;
5142 } table[] = {
5143 { '0', ACTION_POWEROFF },
5144 { '6', ACTION_REBOOT },
5145 { '1', ACTION_RESCUE },
5146 { '2', ACTION_RUNLEVEL2 },
5147 { '3', ACTION_RUNLEVEL3 },
5148 { '4', ACTION_RUNLEVEL4 },
5149 { '5', ACTION_RUNLEVEL5 },
5150 { 's', ACTION_RESCUE },
5151 { 'S', ACTION_RESCUE },
5152 { 'q', ACTION_RELOAD },
5153 { 'Q', ACTION_RELOAD },
5154 { 'u', ACTION_REEXEC },
5155 { 'U', ACTION_REEXEC }
5156 };
5157
5158 unsigned i;
5159 int c;
5160
5161 assert(argc >= 0);
5162 assert(argv);
5163
5164 while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) {
5165 switch (c) {
5166
5167 case ARG_HELP:
5168 telinit_help();
5169 return 0;
5170
5171 case ARG_NO_WALL:
5172 arg_no_wall = true;
5173 break;
5174
5175 case '?':
5176 return -EINVAL;
5177
5178 default:
5179 log_error("Unknown option code %c", c);
5180 return -EINVAL;
5181 }
5182 }
5183
5184 if (optind >= argc) {
5185 telinit_help();
5186 return -EINVAL;
5187 }
5188
5189 if (optind + 1 < argc) {
5190 log_error("Too many arguments.");
5191 return -EINVAL;
5192 }
5193
5194 if (strlen(argv[optind]) != 1) {
5195 log_error("Expected single character argument.");
5196 return -EINVAL;
5197 }
5198
5199 for (i = 0; i < ELEMENTSOF(table); i++)
5200 if (table[i].from == argv[optind][0])
5201 break;
5202
5203 if (i >= ELEMENTSOF(table)) {
5204 log_error("Unknown command %s.", argv[optind]);
5205 return -EINVAL;
5206 }
5207
5208 arg_action = table[i].to;
5209
5210 optind ++;
5211
5212 return 1;
5213 }
5214
5215 static int runlevel_parse_argv(int argc, char *argv[]) {
5216
5217 enum {
5218 ARG_HELP = 0x100,
5219 };
5220
5221 static const struct option options[] = {
5222 { "help", no_argument, NULL, ARG_HELP },
5223 { NULL, 0, NULL, 0 }
5224 };
5225
5226 int c;
5227
5228 assert(argc >= 0);
5229 assert(argv);
5230
5231 while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) {
5232 switch (c) {
5233
5234 case ARG_HELP:
5235 runlevel_help();
5236 return 0;
5237
5238 case '?':
5239 return -EINVAL;
5240
5241 default:
5242 log_error("Unknown option code %c", c);
5243 return -EINVAL;
5244 }
5245 }
5246
5247 if (optind < argc) {
5248 log_error("Too many arguments.");
5249 return -EINVAL;
5250 }
5251
5252 return 1;
5253 }
5254
5255 static int parse_argv(int argc, char *argv[]) {
5256 assert(argc >= 0);
5257 assert(argv);
5258
5259 if (program_invocation_short_name) {
5260
5261 if (strstr(program_invocation_short_name, "halt")) {
5262 arg_action = ACTION_HALT;
5263 return halt_parse_argv(argc, argv);
5264 } else if (strstr(program_invocation_short_name, "poweroff")) {
5265 arg_action = ACTION_POWEROFF;
5266 return halt_parse_argv(argc, argv);
5267 } else if (strstr(program_invocation_short_name, "reboot")) {
5268 if (kexec_loaded())
5269 arg_action = ACTION_KEXEC;
5270 else
5271 arg_action = ACTION_REBOOT;
5272 return halt_parse_argv(argc, argv);
5273 } else if (strstr(program_invocation_short_name, "shutdown")) {
5274 arg_action = ACTION_POWEROFF;
5275 return shutdown_parse_argv(argc, argv);
5276 } else if (strstr(program_invocation_short_name, "init")) {
5277
5278 if (sd_booted() > 0) {
5279 arg_action = ACTION_INVALID;
5280 return telinit_parse_argv(argc, argv);
5281 } else {
5282 /* Hmm, so some other init system is
5283 * running, we need to forward this
5284 * request to it. For now we simply
5285 * guess that it is Upstart. */
5286
5287 execv("/lib/upstart/telinit", argv);
5288
5289 log_error("Couldn't find an alternative telinit implementation to spawn.");
5290 return -EIO;
5291 }
5292
5293 } else if (strstr(program_invocation_short_name, "runlevel")) {
5294 arg_action = ACTION_RUNLEVEL;
5295 return runlevel_parse_argv(argc, argv);
5296 }
5297 }
5298
5299 arg_action = ACTION_SYSTEMCTL;
5300 return systemctl_parse_argv(argc, argv);
5301 }
5302
5303 static int action_to_runlevel(void) {
5304
5305 static const char table[_ACTION_MAX] = {
5306 [ACTION_HALT] = '0',
5307 [ACTION_POWEROFF] = '0',
5308 [ACTION_REBOOT] = '6',
5309 [ACTION_RUNLEVEL2] = '2',
5310 [ACTION_RUNLEVEL3] = '3',
5311 [ACTION_RUNLEVEL4] = '4',
5312 [ACTION_RUNLEVEL5] = '5',
5313 [ACTION_RESCUE] = '1'
5314 };
5315
5316 assert(arg_action < _ACTION_MAX);
5317
5318 return table[arg_action];
5319 }
5320
5321 static int talk_upstart(void) {
5322 DBusMessage *m = NULL, *reply = NULL;
5323 DBusError error;
5324 int previous, rl, r;
5325 char
5326 env1_buf[] = "RUNLEVEL=X",
5327 env2_buf[] = "PREVLEVEL=X";
5328 char *env1 = env1_buf, *env2 = env2_buf;
5329 const char *emit = "runlevel";
5330 dbus_bool_t b_false = FALSE;
5331 DBusMessageIter iter, sub;
5332 DBusConnection *bus;
5333
5334 dbus_error_init(&error);
5335
5336 if (!(rl = action_to_runlevel()))
5337 return 0;
5338
5339 if (utmp_get_runlevel(&previous, NULL) < 0)
5340 previous = 'N';
5341
5342 if (!(bus = dbus_connection_open_private("unix:abstract=/com/ubuntu/upstart", &error))) {
5343 if (dbus_error_has_name(&error, DBUS_ERROR_NO_SERVER)) {
5344 r = 0;
5345 goto finish;
5346 }
5347
5348 log_error("Failed to connect to Upstart bus: %s", bus_error_message(&error));
5349 r = -EIO;
5350 goto finish;
5351 }
5352
5353 if ((r = bus_check_peercred(bus)) < 0) {
5354 log_error("Failed to verify owner of bus.");
5355 goto finish;
5356 }
5357
5358 if (!(m = dbus_message_new_method_call(
5359 "com.ubuntu.Upstart",
5360 "/com/ubuntu/Upstart",
5361 "com.ubuntu.Upstart0_6",
5362 "EmitEvent"))) {
5363
5364 log_error("Could not allocate message.");
5365 r = -ENOMEM;
5366 goto finish;
5367 }
5368
5369 dbus_message_iter_init_append(m, &iter);
5370
5371 env1_buf[sizeof(env1_buf)-2] = rl;
5372 env2_buf[sizeof(env2_buf)-2] = previous;
5373
5374 if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &emit) ||
5375 !dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "s", &sub) ||
5376 !dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &env1) ||
5377 !dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &env2) ||
5378 !dbus_message_iter_close_container(&iter, &sub) ||
5379 !dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &b_false)) {
5380 log_error("Could not append arguments to message.");
5381 r = -ENOMEM;
5382 goto finish;
5383 }
5384
5385 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
5386
5387 if (error_is_no_service(&error)) {
5388 r = -EADDRNOTAVAIL;
5389 goto finish;
5390 }
5391
5392 log_error("Failed to issue method call: %s", bus_error_message(&error));
5393 r = -EIO;
5394 goto finish;
5395 }
5396
5397 r = 1;
5398
5399 finish:
5400 if (m)
5401 dbus_message_unref(m);
5402
5403 if (reply)
5404 dbus_message_unref(reply);
5405
5406 if (bus) {
5407 dbus_connection_flush(bus);
5408 dbus_connection_close(bus);
5409 dbus_connection_unref(bus);
5410 }
5411
5412 dbus_error_free(&error);
5413
5414 return r;
5415 }
5416
5417 static int talk_initctl(void) {
5418 struct init_request request;
5419 int r, fd;
5420 char rl;
5421
5422 if (!(rl = action_to_runlevel()))
5423 return 0;
5424
5425 zero(request);
5426 request.magic = INIT_MAGIC;
5427 request.sleeptime = 0;
5428 request.cmd = INIT_CMD_RUNLVL;
5429 request.runlevel = rl;
5430
5431 if ((fd = open(INIT_FIFO, O_WRONLY|O_NDELAY|O_CLOEXEC|O_NOCTTY)) < 0) {
5432
5433 if (errno == ENOENT)
5434 return 0;
5435
5436 log_error("Failed to open "INIT_FIFO": %m");
5437 return -errno;
5438 }
5439
5440 errno = 0;
5441 r = loop_write(fd, &request, sizeof(request), false) != sizeof(request);
5442 close_nointr_nofail(fd);
5443
5444 if (r < 0) {
5445 log_error("Failed to write to "INIT_FIFO": %m");
5446 return errno ? -errno : -EIO;
5447 }
5448
5449 return 1;
5450 }
5451
5452 static int systemctl_main(DBusConnection *bus, int argc, char *argv[], DBusError *error) {
5453
5454 static const struct {
5455 const char* verb;
5456 const enum {
5457 MORE,
5458 LESS,
5459 EQUAL
5460 } argc_cmp;
5461 const int argc;
5462 int (* const dispatch)(DBusConnection *bus, char **args);
5463 } verbs[] = {
5464 { "list-units", LESS, 1, list_units },
5465 { "list-unit-files", EQUAL, 1, list_unit_files },
5466 { "list-jobs", EQUAL, 1, list_jobs },
5467 { "clear-jobs", EQUAL, 1, daemon_reload },
5468 { "load", MORE, 2, load_unit },
5469 { "cancel", MORE, 2, cancel_job },
5470 { "start", MORE, 2, start_unit },
5471 { "stop", MORE, 2, start_unit },
5472 { "condstop", MORE, 2, start_unit }, /* For compatibility with ALTLinux */
5473 { "reload", MORE, 2, start_unit },
5474 { "restart", MORE, 2, start_unit },
5475 { "try-restart", MORE, 2, start_unit },
5476 { "reload-or-restart", MORE, 2, start_unit },
5477 { "reload-or-try-restart", MORE, 2, start_unit },
5478 { "force-reload", MORE, 2, start_unit }, /* For compatibility with SysV */
5479 { "condreload", MORE, 2, start_unit }, /* For compatibility with ALTLinux */
5480 { "condrestart", MORE, 2, start_unit }, /* For compatibility with RH */
5481 { "isolate", EQUAL, 2, start_unit },
5482 { "kill", MORE, 2, kill_unit },
5483 { "is-active", MORE, 2, check_unit },
5484 { "check", MORE, 2, check_unit },
5485 { "show", MORE, 1, show },
5486 { "status", MORE, 2, show },
5487 { "help", MORE, 2, show },
5488 { "dump", EQUAL, 1, dump },
5489 { "dot", EQUAL, 1, dot },
5490 { "snapshot", LESS, 2, snapshot },
5491 { "delete", MORE, 2, delete_snapshot },
5492 { "daemon-reload", EQUAL, 1, daemon_reload },
5493 { "daemon-reexec", EQUAL, 1, daemon_reload },
5494 { "show-environment", EQUAL, 1, show_enviroment },
5495 { "set-environment", MORE, 2, set_environment },
5496 { "unset-environment", MORE, 2, set_environment },
5497 { "halt", EQUAL, 1, start_special },
5498 { "poweroff", EQUAL, 1, start_special },
5499 { "reboot", EQUAL, 1, start_special },
5500 { "kexec", EQUAL, 1, start_special },
5501 { "suspend", EQUAL, 1, start_special },
5502 { "hibernate", EQUAL, 1, start_special },
5503 { "default", EQUAL, 1, start_special },
5504 { "rescue", EQUAL, 1, start_special },
5505 { "emergency", EQUAL, 1, start_special },
5506 { "exit", EQUAL, 1, start_special },
5507 { "reset-failed", MORE, 1, reset_failed },
5508 { "enable", MORE, 2, enable_unit },
5509 { "disable", MORE, 2, enable_unit },
5510 { "is-enabled", MORE, 2, unit_is_enabled },
5511 { "reenable", MORE, 2, enable_unit },
5512 { "preset", MORE, 2, enable_unit },
5513 { "mask", MORE, 2, enable_unit },
5514 { "unmask", MORE, 2, enable_unit },
5515 { "link", MORE, 2, enable_unit },
5516 { "switch-root", MORE, 2, switch_root },
5517 };
5518
5519 int left;
5520 unsigned i;
5521
5522 assert(argc >= 0);
5523 assert(argv);
5524 assert(error);
5525
5526 left = argc - optind;
5527
5528 if (left <= 0)
5529 /* Special rule: no arguments means "list-units" */
5530 i = 0;
5531 else {
5532 if (streq(argv[optind], "help") && !argv[optind+1]) {
5533 log_error("This command expects one or more "
5534 "unit names. Did you mean --help?");
5535 return -EINVAL;
5536 }
5537
5538 for (i = 0; i < ELEMENTSOF(verbs); i++)
5539 if (streq(argv[optind], verbs[i].verb))
5540 break;
5541
5542 if (i >= ELEMENTSOF(verbs)) {
5543 log_error("Unknown operation %s", argv[optind]);
5544 return -EINVAL;
5545 }
5546 }
5547
5548 switch (verbs[i].argc_cmp) {
5549
5550 case EQUAL:
5551 if (left != verbs[i].argc) {
5552 log_error("Invalid number of arguments.");
5553 return -EINVAL;
5554 }
5555
5556 break;
5557
5558 case MORE:
5559 if (left < verbs[i].argc) {
5560 log_error("Too few arguments.");
5561 return -EINVAL;
5562 }
5563
5564 break;
5565
5566 case LESS:
5567 if (left > verbs[i].argc) {
5568 log_error("Too many arguments.");
5569 return -EINVAL;
5570 }
5571
5572 break;
5573
5574 default:
5575 assert_not_reached("Unknown comparison operator.");
5576 }
5577
5578 /* Require a bus connection for all operations but
5579 * enable/disable */
5580 if (!streq(verbs[i].verb, "enable") &&
5581 !streq(verbs[i].verb, "disable") &&
5582 !streq(verbs[i].verb, "is-enabled") &&
5583 !streq(verbs[i].verb, "list-unit-files") &&
5584 !streq(verbs[i].verb, "reenable") &&
5585 !streq(verbs[i].verb, "preset") &&
5586 !streq(verbs[i].verb, "mask") &&
5587 !streq(verbs[i].verb, "unmask") &&
5588 !streq(verbs[i].verb, "link")) {
5589
5590 if (running_in_chroot() > 0) {
5591 log_info("Running in chroot, ignoring request.");
5592 return 0;
5593 }
5594
5595 if (((!streq(verbs[i].verb, "reboot") &&
5596 !streq(verbs[i].verb, "halt") &&
5597 !streq(verbs[i].verb, "poweroff")) || arg_force <= 0) && !bus) {
5598 log_error("Failed to get D-Bus connection: %s",
5599 dbus_error_is_set(error) ? error->message : "No connection to service manager.");
5600 return -EIO;
5601 }
5602
5603 } else {
5604
5605 if (!bus && !avoid_bus()) {
5606 log_error("Failed to get D-Bus connection: %s",
5607 dbus_error_is_set(error) ? error->message : "No connection to service manager.");
5608 return -EIO;
5609 }
5610 }
5611
5612 return verbs[i].dispatch(bus, argv + optind);
5613 }
5614
5615 static int send_shutdownd(usec_t t, char mode, bool dry_run, bool warn, const char *message) {
5616 int fd;
5617 struct msghdr msghdr;
5618 struct iovec iovec[2];
5619 union sockaddr_union sockaddr;
5620 struct sd_shutdown_command c;
5621
5622 fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0);
5623 if (fd < 0)
5624 return -errno;
5625
5626 zero(c);
5627 c.usec = t;
5628 c.mode = mode;
5629 c.dry_run = dry_run;
5630 c.warn_wall = warn;
5631
5632 zero(sockaddr);
5633 sockaddr.sa.sa_family = AF_UNIX;
5634 strncpy(sockaddr.un.sun_path, "/run/systemd/shutdownd", sizeof(sockaddr.un.sun_path));
5635
5636 zero(msghdr);
5637 msghdr.msg_name = &sockaddr;
5638 msghdr.msg_namelen = offsetof(struct sockaddr_un, sun_path) + sizeof("/run/systemd/shutdownd") - 1;
5639
5640 zero(iovec);
5641 iovec[0].iov_base = (char*) &c;
5642 iovec[0].iov_len = offsetof(struct sd_shutdown_command, wall_message);
5643
5644 if (isempty(message))
5645 msghdr.msg_iovlen = 1;
5646 else {
5647 iovec[1].iov_base = (char*) message;
5648 iovec[1].iov_len = strlen(message);
5649 msghdr.msg_iovlen = 2;
5650 }
5651 msghdr.msg_iov = iovec;
5652
5653 if (sendmsg(fd, &msghdr, MSG_NOSIGNAL) < 0) {
5654 close_nointr_nofail(fd);
5655 return -errno;
5656 }
5657
5658 close_nointr_nofail(fd);
5659 return 0;
5660 }
5661
5662 static int reload_with_fallback(DBusConnection *bus) {
5663
5664 if (bus) {
5665 /* First, try systemd via D-Bus. */
5666 if (daemon_reload(bus, NULL) >= 0)
5667 return 0;
5668 }
5669
5670 /* Nothing else worked, so let's try signals */
5671 assert(arg_action == ACTION_RELOAD || arg_action == ACTION_REEXEC);
5672
5673 if (kill(1, arg_action == ACTION_RELOAD ? SIGHUP : SIGTERM) < 0) {
5674 log_error("kill() failed: %m");
5675 return -errno;
5676 }
5677
5678 return 0;
5679 }
5680
5681 static int start_with_fallback(DBusConnection *bus) {
5682
5683 if (bus) {
5684 /* First, try systemd via D-Bus. */
5685 if (start_unit(bus, NULL) >= 0)
5686 goto done;
5687 }
5688
5689 /* Hmm, talking to systemd via D-Bus didn't work. Then
5690 * let's try to talk to Upstart via D-Bus. */
5691 if (talk_upstart() > 0)
5692 goto done;
5693
5694 /* Nothing else worked, so let's try
5695 * /dev/initctl */
5696 if (talk_initctl() > 0)
5697 goto done;
5698
5699 log_error("Failed to talk to init daemon.");
5700 return -EIO;
5701
5702 done:
5703 warn_wall(arg_action);
5704 return 0;
5705 }
5706
5707 static void halt_now(enum action a) {
5708
5709 /* Make sure C-A-D is handled by the kernel from this
5710 * point on... */
5711 reboot(RB_ENABLE_CAD);
5712
5713 switch (a) {
5714
5715 case ACTION_HALT:
5716 log_info("Halting.");
5717 reboot(RB_HALT_SYSTEM);
5718 break;
5719
5720 case ACTION_POWEROFF:
5721 log_info("Powering off.");
5722 reboot(RB_POWER_OFF);
5723 break;
5724
5725 case ACTION_REBOOT:
5726 log_info("Rebooting.");
5727 reboot(RB_AUTOBOOT);
5728 break;
5729
5730 default:
5731 assert_not_reached("Unknown halt action.");
5732 }
5733
5734 assert_not_reached("Uh? This shouldn't happen.");
5735 }
5736
5737 static int halt_main(DBusConnection *bus) {
5738 int r;
5739
5740 if (geteuid() != 0) {
5741 /* Try logind if we are a normal user and no special
5742 * mode applies. Maybe PolicyKit allows us to shutdown
5743 * the machine. */
5744
5745 if (arg_when <= 0 &&
5746 !arg_dry &&
5747 !arg_force &&
5748 (arg_action == ACTION_POWEROFF ||
5749 arg_action == ACTION_REBOOT)) {
5750 r = reboot_with_logind(bus, arg_action);
5751 if (r >= 0)
5752 return r;
5753 }
5754
5755 log_error("Must be root.");
5756 return -EPERM;
5757 }
5758
5759 if (arg_when > 0) {
5760 char *m;
5761
5762 m = strv_join(arg_wall, " ");
5763 r = send_shutdownd(arg_when,
5764 arg_action == ACTION_HALT ? 'H' :
5765 arg_action == ACTION_POWEROFF ? 'P' :
5766 arg_action == ACTION_KEXEC ? 'K' :
5767 'r',
5768 arg_dry,
5769 !arg_no_wall,
5770 m);
5771 free(m);
5772
5773 if (r < 0)
5774 log_warning("Failed to talk to shutdownd, proceeding with immediate shutdown: %s", strerror(-r));
5775 else {
5776 char date[FORMAT_TIMESTAMP_MAX];
5777
5778 log_info("Shutdown scheduled for %s, use 'shutdown -c' to cancel.",
5779 format_timestamp(date, sizeof(date), arg_when));
5780 return 0;
5781 }
5782 }
5783
5784 if (!arg_dry && !arg_force)
5785 return start_with_fallback(bus);
5786
5787 if (!arg_no_wtmp) {
5788 if (sd_booted() > 0)
5789 log_debug("Not writing utmp record, assuming that systemd-update-utmp is used.");
5790 else {
5791 r = utmp_put_shutdown();
5792 if (r < 0)
5793 log_warning("Failed to write utmp record: %s", strerror(-r));
5794 }
5795 }
5796
5797 if (!arg_no_sync)
5798 sync();
5799
5800 if (arg_dry)
5801 return 0;
5802
5803 halt_now(arg_action);
5804 /* We should never reach this. */
5805 return -ENOSYS;
5806 }
5807
5808 static int runlevel_main(void) {
5809 int r, runlevel, previous;
5810
5811 r = utmp_get_runlevel(&runlevel, &previous);
5812 if (r < 0) {
5813 puts("unknown");
5814 return r;
5815 }
5816
5817 printf("%c %c\n",
5818 previous <= 0 ? 'N' : previous,
5819 runlevel <= 0 ? 'N' : runlevel);
5820
5821 return 0;
5822 }
5823
5824 int main(int argc, char*argv[]) {
5825 int r, retval = EXIT_FAILURE;
5826 DBusConnection *bus = NULL;
5827 DBusError error;
5828
5829 dbus_error_init(&error);
5830
5831 log_parse_environment();
5832 log_open();
5833
5834 r = parse_argv(argc, argv);
5835 if (r < 0)
5836 goto finish;
5837 else if (r == 0) {
5838 retval = EXIT_SUCCESS;
5839 goto finish;
5840 }
5841
5842 /* /sbin/runlevel doesn't need to communicate via D-Bus, so
5843 * let's shortcut this */
5844 if (arg_action == ACTION_RUNLEVEL) {
5845 r = runlevel_main();
5846 retval = r < 0 ? EXIT_FAILURE : r;
5847 goto finish;
5848 }
5849
5850 if (running_in_chroot() > 0 && arg_action != ACTION_SYSTEMCTL) {
5851 log_info("Running in chroot, ignoring request.");
5852 retval = 0;
5853 goto finish;
5854 }
5855
5856 if (!avoid_bus()) {
5857 if (arg_transport == TRANSPORT_NORMAL)
5858 bus_connect(arg_scope == UNIT_FILE_SYSTEM ? DBUS_BUS_SYSTEM : DBUS_BUS_SESSION, &bus, &private_bus, &error);
5859 else if (arg_transport == TRANSPORT_POLKIT) {
5860 bus_connect_system_polkit(&bus, &error);
5861 private_bus = false;
5862 } else if (arg_transport == TRANSPORT_SSH) {
5863 bus_connect_system_ssh(NULL, arg_host, &bus, &error);
5864 private_bus = false;
5865 } else
5866 assert_not_reached("Uh, invalid transport...");
5867 }
5868
5869 switch (arg_action) {
5870
5871 case ACTION_SYSTEMCTL:
5872 r = systemctl_main(bus, argc, argv, &error);
5873 break;
5874
5875 case ACTION_HALT:
5876 case ACTION_POWEROFF:
5877 case ACTION_REBOOT:
5878 case ACTION_KEXEC:
5879 r = halt_main(bus);
5880 break;
5881
5882 case ACTION_RUNLEVEL2:
5883 case ACTION_RUNLEVEL3:
5884 case ACTION_RUNLEVEL4:
5885 case ACTION_RUNLEVEL5:
5886 case ACTION_RESCUE:
5887 case ACTION_EMERGENCY:
5888 case ACTION_DEFAULT:
5889 r = start_with_fallback(bus);
5890 break;
5891
5892 case ACTION_RELOAD:
5893 case ACTION_REEXEC:
5894 r = reload_with_fallback(bus);
5895 break;
5896
5897 case ACTION_CANCEL_SHUTDOWN:
5898 r = send_shutdownd(0, 0, false, false, NULL);
5899 break;
5900
5901 case ACTION_INVALID:
5902 case ACTION_RUNLEVEL:
5903 default:
5904 assert_not_reached("Unknown action");
5905 }
5906
5907 retval = r < 0 ? EXIT_FAILURE : r;
5908
5909 finish:
5910 if (bus) {
5911 dbus_connection_flush(bus);
5912 dbus_connection_close(bus);
5913 dbus_connection_unref(bus);
5914 }
5915
5916 dbus_error_free(&error);
5917
5918 dbus_shutdown();
5919
5920 strv_free(arg_property);
5921
5922 pager_close();
5923 ask_password_agent_close();
5924 polkit_agent_close();
5925
5926 return retval;
5927 }
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