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[thirdparty/systemd.git] / src / systemctl / systemctl.c
1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
2
3 /***
4 This file is part of systemd.
5
6 Copyright 2010 Lennart Poettering
7
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU Lesser General Public License as published by
10 the Free Software Foundation; either version 2.1 of the License, or
11 (at your option) any later version.
12
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 Lesser General Public License for more details.
17
18 You should have received a copy of the GNU Lesser General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
20 ***/
21
22 #include <sys/reboot.h>
23 #include <stdio.h>
24 #include <getopt.h>
25 #include <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 const char *arg_load_state = NULL;
69 static char **arg_property = NULL;
70 static bool arg_all = false;
71 static const char *arg_job_mode = "replace";
72 static UnitFileScope arg_scope = UNIT_FILE_SYSTEM;
73 static bool arg_no_block = false;
74 static bool arg_no_legend = false;
75 static bool arg_no_pager = false;
76 static bool arg_no_wtmp = false;
77 static bool arg_no_sync = false;
78 static bool arg_no_wall = false;
79 static bool arg_no_reload = false;
80 static bool arg_dry = false;
81 static bool arg_quiet = false;
82 static bool arg_full = false;
83 static int arg_force = 0;
84 static bool arg_ask_password = true;
85 static bool arg_failed = false;
86 static bool arg_runtime = false;
87 static char **arg_wall = NULL;
88 static const char *arg_kill_who = NULL;
89 static const char *arg_kill_mode = NULL;
90 static int arg_signal = SIGTERM;
91 static const char *arg_root = NULL;
92 static usec_t arg_when = 0;
93 static enum action {
94 ACTION_INVALID,
95 ACTION_SYSTEMCTL,
96 ACTION_HALT,
97 ACTION_POWEROFF,
98 ACTION_REBOOT,
99 ACTION_KEXEC,
100 ACTION_EXIT,
101 ACTION_SUSPEND,
102 ACTION_HIBERNATE,
103 ACTION_RUNLEVEL2,
104 ACTION_RUNLEVEL3,
105 ACTION_RUNLEVEL4,
106 ACTION_RUNLEVEL5,
107 ACTION_RESCUE,
108 ACTION_EMERGENCY,
109 ACTION_DEFAULT,
110 ACTION_RELOAD,
111 ACTION_REEXEC,
112 ACTION_RUNLEVEL,
113 ACTION_CANCEL_SHUTDOWN,
114 _ACTION_MAX
115 } arg_action = ACTION_SYSTEMCTL;
116 static enum dot {
117 DOT_ALL,
118 DOT_ORDER,
119 DOT_REQUIRE
120 } arg_dot = DOT_ALL;
121 static enum transport {
122 TRANSPORT_NORMAL,
123 TRANSPORT_SSH,
124 TRANSPORT_POLKIT
125 } arg_transport = TRANSPORT_NORMAL;
126 static const char *arg_host = NULL;
127 static bool arg_follow = false;
128 static unsigned arg_lines = 10;
129 static OutputMode arg_output = OUTPUT_SHORT;
130
131 static bool private_bus = false;
132
133 static int daemon_reload(DBusConnection *bus, char **args);
134 static void halt_now(enum action a);
135
136 static bool on_tty(void) {
137 static int t = -1;
138
139 /* Note that this is invoked relatively early, before we start
140 * the pager. That means the value we return reflects whether
141 * we originally were started on a tty, not if we currently
142 * are. But this is intended, since we want colour and so on
143 * when run in our own pager. */
144
145 if (_unlikely_(t < 0))
146 t = isatty(STDOUT_FILENO) > 0;
147
148 return t;
149 }
150
151 static void pager_open_if_enabled(void) {
152
153 /* Cache result before we open the pager */
154 on_tty();
155
156 if (arg_no_pager)
157 return;
158
159 pager_open();
160 }
161
162 static void ask_password_agent_open_if_enabled(void) {
163
164 /* Open the password agent as a child process if necessary */
165
166 if (!arg_ask_password)
167 return;
168
169 if (arg_scope != UNIT_FILE_SYSTEM)
170 return;
171
172 ask_password_agent_open();
173 }
174
175 #ifdef HAVE_LOGIND
176 static void polkit_agent_open_if_enabled(void) {
177
178 /* Open the polkit agent as a child process if necessary */
179
180 if (!arg_ask_password)
181 return;
182
183 if (arg_scope != UNIT_FILE_SYSTEM)
184 return;
185
186 polkit_agent_open();
187 }
188 #endif
189
190 static const char *ansi_highlight_red(bool b) {
191
192 if (!on_tty())
193 return "";
194
195 return b ? ANSI_HIGHLIGHT_RED_ON : ANSI_HIGHLIGHT_OFF;
196 }
197
198 static const char *ansi_highlight_green(bool b) {
199
200 if (!on_tty())
201 return "";
202
203 return b ? ANSI_HIGHLIGHT_GREEN_ON : ANSI_HIGHLIGHT_OFF;
204 }
205
206 static bool error_is_no_service(const DBusError *error) {
207 assert(error);
208
209 if (!dbus_error_is_set(error))
210 return false;
211
212 if (dbus_error_has_name(error, DBUS_ERROR_NAME_HAS_NO_OWNER))
213 return true;
214
215 if (dbus_error_has_name(error, DBUS_ERROR_SERVICE_UNKNOWN))
216 return true;
217
218 return startswith(error->name, "org.freedesktop.DBus.Error.Spawn.");
219 }
220
221 static int translate_bus_error_to_exit_status(int r, const DBusError *error) {
222 assert(error);
223
224 if (!dbus_error_is_set(error))
225 return r;
226
227 if (dbus_error_has_name(error, DBUS_ERROR_ACCESS_DENIED) ||
228 dbus_error_has_name(error, BUS_ERROR_ONLY_BY_DEPENDENCY) ||
229 dbus_error_has_name(error, BUS_ERROR_NO_ISOLATION) ||
230 dbus_error_has_name(error, BUS_ERROR_TRANSACTION_IS_DESTRUCTIVE))
231 return EXIT_NOPERMISSION;
232
233 if (dbus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT))
234 return EXIT_NOTINSTALLED;
235
236 if (dbus_error_has_name(error, BUS_ERROR_JOB_TYPE_NOT_APPLICABLE) ||
237 dbus_error_has_name(error, BUS_ERROR_NOT_SUPPORTED))
238 return EXIT_NOTIMPLEMENTED;
239
240 if (dbus_error_has_name(error, BUS_ERROR_LOAD_FAILED))
241 return EXIT_NOTCONFIGURED;
242
243 if (r != 0)
244 return r;
245
246 return EXIT_FAILURE;
247 }
248
249 static void warn_wall(enum action a) {
250 static const char *table[_ACTION_MAX] = {
251 [ACTION_HALT] = "The system is going down for system halt NOW!",
252 [ACTION_REBOOT] = "The system is going down for reboot NOW!",
253 [ACTION_POWEROFF] = "The system is going down for power-off NOW!",
254 [ACTION_KEXEC] = "The system is going down for kexec reboot NOW!",
255 [ACTION_RESCUE] = "The system is going down to rescue mode NOW!",
256 [ACTION_EMERGENCY] = "The system is going down to emergency mode NOW!"
257 };
258
259 if (arg_no_wall)
260 return;
261
262 if (arg_wall) {
263 char *p;
264
265 p = strv_join(arg_wall, " ");
266 if (!p) {
267 log_error("Failed to join strings.");
268 return;
269 }
270
271 if (*p) {
272 utmp_wall(p, NULL);
273 free(p);
274 return;
275 }
276
277 free(p);
278 }
279
280 if (!table[a])
281 return;
282
283 utmp_wall(table[a], NULL);
284 }
285
286 static bool avoid_bus(void) {
287
288 if (running_in_chroot() > 0)
289 return true;
290
291 if (sd_booted() <= 0)
292 return true;
293
294 if (!isempty(arg_root))
295 return true;
296
297 if (arg_scope == UNIT_FILE_GLOBAL)
298 return true;
299
300 return false;
301 }
302
303 struct unit_info {
304 const char *id;
305 const char *description;
306 const char *load_state;
307 const char *active_state;
308 const char *sub_state;
309 const char *following;
310 const char *unit_path;
311 uint32_t job_id;
312 const char *job_type;
313 const char *job_path;
314 };
315
316 static int compare_unit_info(const void *a, const void *b) {
317 const char *d1, *d2;
318 const struct unit_info *u = a, *v = b;
319
320 d1 = strrchr(u->id, '.');
321 d2 = strrchr(v->id, '.');
322
323 if (d1 && d2) {
324 int r;
325
326 if ((r = strcasecmp(d1, d2)) != 0)
327 return r;
328 }
329
330 return strcasecmp(u->id, v->id);
331 }
332
333 static bool output_show_unit(const struct unit_info *u) {
334 const char *dot;
335
336 if (arg_failed)
337 return streq(u->active_state, "failed");
338
339 return (!arg_type || ((dot = strrchr(u->id, '.')) &&
340 streq(dot+1, arg_type))) &&
341 (!arg_load_state || streq(u->load_state, arg_load_state)) &&
342 (arg_all || !(streq(u->active_state, "inactive")
343 || u->following[0]) || u->job_id > 0);
344 }
345
346 static void output_units_list(const struct unit_info *unit_infos, unsigned c) {
347 unsigned id_len, max_id_len, active_len, sub_len, job_len, desc_len, n_shown = 0;
348 const struct unit_info *u;
349
350 max_id_len = sizeof("UNIT")-1;
351 active_len = sizeof("ACTIVE")-1;
352 sub_len = sizeof("SUB")-1;
353 job_len = sizeof("JOB")-1;
354 desc_len = 0;
355
356 for (u = unit_infos; u < unit_infos + c; u++) {
357 if (!output_show_unit(u))
358 continue;
359
360 max_id_len = MAX(max_id_len, strlen(u->id));
361 active_len = MAX(active_len, strlen(u->active_state));
362 sub_len = MAX(sub_len, strlen(u->sub_state));
363 if (u->job_id != 0)
364 job_len = MAX(job_len, strlen(u->job_type));
365 }
366
367 if (!arg_full) {
368 unsigned basic_len;
369 id_len = MIN(max_id_len, 25);
370 basic_len = 5 + id_len + 6 + active_len + sub_len + job_len;
371 if (basic_len < (unsigned) columns()) {
372 unsigned extra_len, incr;
373 extra_len = columns() - basic_len;
374 /* Either UNIT already got 25, or is fully satisfied.
375 * Grant up to 25 to DESC now. */
376 incr = MIN(extra_len, 25);
377 desc_len += incr;
378 extra_len -= incr;
379 /* split the remaining space between UNIT and DESC,
380 * but do not give UNIT more than it needs. */
381 if (extra_len > 0) {
382 incr = MIN(extra_len / 2, max_id_len - id_len);
383 id_len += incr;
384 desc_len += extra_len - incr;
385 }
386 }
387 } else
388 id_len = max_id_len;
389
390 if (!arg_no_legend) {
391 printf("%-*s %-6s %-*s %-*s %-*s ", id_len, "UNIT", "LOAD",
392 active_len, "ACTIVE", sub_len, "SUB", job_len, "JOB");
393 if (!arg_full && arg_no_pager)
394 printf("%.*s\n", desc_len, "DESCRIPTION");
395 else
396 printf("%s\n", "DESCRIPTION");
397 }
398
399 for (u = unit_infos; u < unit_infos + c; u++) {
400 char *e;
401 const char *on_loaded, *off_loaded;
402 const char *on_active, *off_active;
403
404 if (!output_show_unit(u))
405 continue;
406
407 n_shown++;
408
409 if (streq(u->load_state, "error")) {
410 on_loaded = ansi_highlight_red(true);
411 off_loaded = ansi_highlight_red(false);
412 } else
413 on_loaded = off_loaded = "";
414
415 if (streq(u->active_state, "failed")) {
416 on_active = ansi_highlight_red(true);
417 off_active = ansi_highlight_red(false);
418 } else
419 on_active = off_active = "";
420
421 e = arg_full ? NULL : ellipsize(u->id, id_len, 33);
422
423 printf("%-*s %s%-6s%s %s%-*s %-*s%s %-*s ",
424 id_len, e ? e : u->id,
425 on_loaded, u->load_state, off_loaded,
426 on_active, active_len, u->active_state,
427 sub_len, u->sub_state, off_active,
428 job_len, u->job_id ? u->job_type : "");
429 if (!arg_full && arg_no_pager)
430 printf("%.*s\n", desc_len, u->description);
431 else
432 printf("%s\n", u->description);
433
434 free(e);
435 }
436
437 if (!arg_no_legend) {
438 printf("\nLOAD = Reflects whether the unit definition was properly loaded.\n"
439 "ACTIVE = The high-level unit activation state, i.e. generalization of SUB.\n"
440 "SUB = The low-level unit activation state, values depend on unit type.\n"
441 "JOB = Pending job for the unit.\n");
442
443 if (arg_all)
444 printf("\n%u units listed.\n", n_shown);
445 else
446 printf("\n%u units listed. Pass --all to see inactive units, too.\n", n_shown);
447 }
448 }
449
450 static int list_units(DBusConnection *bus, char **args) {
451 DBusMessage *m = NULL, *reply = NULL;
452 DBusError error;
453 int r;
454 DBusMessageIter iter, sub, sub2;
455 unsigned c = 0, n_units = 0;
456 struct unit_info *unit_infos = NULL;
457
458 dbus_error_init(&error);
459
460 assert(bus);
461
462 pager_open_if_enabled();
463
464 if (!(m = dbus_message_new_method_call(
465 "org.freedesktop.systemd1",
466 "/org/freedesktop/systemd1",
467 "org.freedesktop.systemd1.Manager",
468 "ListUnits"))) {
469 log_error("Could not allocate message.");
470 return -ENOMEM;
471 }
472
473 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
474 log_error("Failed to issue method call: %s", bus_error_message(&error));
475 r = -EIO;
476 goto finish;
477 }
478
479 if (!dbus_message_iter_init(reply, &iter) ||
480 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
481 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
482 log_error("Failed to parse reply.");
483 r = -EIO;
484 goto finish;
485 }
486
487 dbus_message_iter_recurse(&iter, &sub);
488
489 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
490 struct unit_info *u;
491
492 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
493 log_error("Failed to parse reply.");
494 r = -EIO;
495 goto finish;
496 }
497
498 if (c >= n_units) {
499 struct unit_info *w;
500
501 n_units = MAX(2*c, 16);
502 w = realloc(unit_infos, sizeof(struct unit_info) * n_units);
503
504 if (!w) {
505 log_error("Failed to allocate unit array.");
506 r = -ENOMEM;
507 goto finish;
508 }
509
510 unit_infos = w;
511 }
512
513 u = unit_infos+c;
514
515 dbus_message_iter_recurse(&sub, &sub2);
516
517 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->id, true) < 0 ||
518 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->description, true) < 0 ||
519 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->load_state, true) < 0 ||
520 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->active_state, true) < 0 ||
521 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->sub_state, true) < 0 ||
522 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->following, true) < 0 ||
523 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &u->unit_path, true) < 0 ||
524 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &u->job_id, true) < 0 ||
525 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->job_type, true) < 0 ||
526 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &u->job_path, false) < 0) {
527 log_error("Failed to parse reply.");
528 r = -EIO;
529 goto finish;
530 }
531
532 dbus_message_iter_next(&sub);
533 c++;
534 }
535
536 if (c > 0) {
537 qsort(unit_infos, c, sizeof(struct unit_info), compare_unit_info);
538 output_units_list(unit_infos, c);
539 }
540
541 r = 0;
542
543 finish:
544 if (m)
545 dbus_message_unref(m);
546
547 if (reply)
548 dbus_message_unref(reply);
549
550 free(unit_infos);
551
552 dbus_error_free(&error);
553
554 return r;
555 }
556
557 static int compare_unit_file_list(const void *a, const void *b) {
558 const char *d1, *d2;
559 const UnitFileList *u = a, *v = b;
560
561 d1 = strrchr(u->path, '.');
562 d2 = strrchr(v->path, '.');
563
564 if (d1 && d2) {
565 int r;
566
567 r = strcasecmp(d1, d2);
568 if (r != 0)
569 return r;
570 }
571
572 return strcasecmp(path_get_file_name(u->path), path_get_file_name(v->path));
573 }
574
575 static bool output_show_unit_file(const UnitFileList *u) {
576 const char *dot;
577
578 return !arg_type || ((dot = strrchr(u->path, '.')) && streq(dot+1, arg_type));
579 }
580
581 static void output_unit_file_list(const UnitFileList *units, unsigned c) {
582 unsigned max_id_len, id_cols, state_cols, n_shown = 0;
583 const UnitFileList *u;
584
585 max_id_len = sizeof("UNIT FILE")-1;
586 state_cols = sizeof("STATE")-1;
587 for (u = units; u < units + c; u++) {
588 if (!output_show_unit_file(u))
589 continue;
590
591 max_id_len = MAX(max_id_len, strlen(path_get_file_name(u->path)));
592 state_cols = MAX(state_cols, strlen(unit_file_state_to_string(u->state)));
593 }
594
595 if (!arg_full) {
596 unsigned basic_cols;
597 id_cols = MIN(max_id_len, 25);
598 basic_cols = 1 + id_cols + state_cols;
599 if (basic_cols < (unsigned) columns())
600 id_cols += MIN(columns() - basic_cols, max_id_len - id_cols);
601 } else
602 id_cols = max_id_len;
603
604 if (!arg_no_legend)
605 printf("%-*s %-*s\n", id_cols, "UNIT FILE", state_cols, "STATE");
606
607 for (u = units; u < units + c; u++) {
608 char *e;
609 const char *on, *off;
610 const char *id;
611
612 if (!output_show_unit_file(u))
613 continue;
614
615 n_shown++;
616
617 if (u->state == UNIT_FILE_MASKED ||
618 u->state == UNIT_FILE_MASKED_RUNTIME ||
619 u->state == UNIT_FILE_DISABLED) {
620 on = ansi_highlight_red(true);
621 off = ansi_highlight_red(false);
622 } else if (u->state == UNIT_FILE_ENABLED) {
623 on = ansi_highlight_green(true);
624 off = ansi_highlight_green(false);
625 } else
626 on = off = "";
627
628 id = path_get_file_name(u->path);
629
630 e = arg_full ? NULL : ellipsize(id, id_cols, 33);
631
632 printf("%-*s %s%-*s%s\n",
633 id_cols, e ? e : id,
634 on, state_cols, unit_file_state_to_string(u->state), off);
635
636 free(e);
637 }
638
639 if (!arg_no_legend)
640 printf("\n%u unit files listed.\n", n_shown);
641 }
642
643 static int list_unit_files(DBusConnection *bus, char **args) {
644 DBusMessage *m = NULL, *reply = NULL;
645 DBusError error;
646 int r;
647 DBusMessageIter iter, sub, sub2;
648 unsigned c = 0, n_units = 0;
649 UnitFileList *units = NULL;
650
651 dbus_error_init(&error);
652
653 pager_open_if_enabled();
654
655 if (avoid_bus()) {
656 Hashmap *h;
657 UnitFileList *u;
658 Iterator i;
659
660 h = hashmap_new(string_hash_func, string_compare_func);
661 if (!h) {
662 log_error("Out of memory");
663 return -ENOMEM;
664 }
665
666 r = unit_file_get_list(arg_scope, arg_root, h);
667 if (r < 0) {
668 unit_file_list_free(h);
669 log_error("Failed to get unit file list: %s", strerror(-r));
670 return r;
671 }
672
673 n_units = hashmap_size(h);
674 units = new(UnitFileList, n_units);
675 if (!units) {
676 unit_file_list_free(h);
677 log_error("Out of memory");
678 return -ENOMEM;
679 }
680
681 HASHMAP_FOREACH(u, h, i) {
682 memcpy(units + c++, u, sizeof(UnitFileList));
683 free(u);
684 }
685
686 hashmap_free(h);
687 } else {
688 assert(bus);
689
690 m = dbus_message_new_method_call(
691 "org.freedesktop.systemd1",
692 "/org/freedesktop/systemd1",
693 "org.freedesktop.systemd1.Manager",
694 "ListUnitFiles");
695 if (!m) {
696 log_error("Could not allocate message.");
697 return -ENOMEM;
698 }
699
700 reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
701 if (!reply) {
702 log_error("Failed to issue method call: %s", bus_error_message(&error));
703 r = -EIO;
704 goto finish;
705 }
706
707 if (!dbus_message_iter_init(reply, &iter) ||
708 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
709 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
710 log_error("Failed to parse reply.");
711 r = -EIO;
712 goto finish;
713 }
714
715 dbus_message_iter_recurse(&iter, &sub);
716
717 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
718 UnitFileList *u;
719 const char *state;
720
721 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
722 log_error("Failed to parse reply.");
723 r = -EIO;
724 goto finish;
725 }
726
727 if (c >= n_units) {
728 UnitFileList *w;
729
730 n_units = MAX(2*c, 16);
731 w = realloc(units, sizeof(struct UnitFileList) * n_units);
732
733 if (!w) {
734 log_error("Failed to allocate unit array.");
735 r = -ENOMEM;
736 goto finish;
737 }
738
739 units = w;
740 }
741
742 u = units+c;
743
744 dbus_message_iter_recurse(&sub, &sub2);
745
746 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->path, true) < 0 ||
747 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &state, false) < 0) {
748 log_error("Failed to parse reply.");
749 r = -EIO;
750 goto finish;
751 }
752
753 u->state = unit_file_state_from_string(state);
754
755 dbus_message_iter_next(&sub);
756 c++;
757 }
758 }
759
760 if (c > 0) {
761 qsort(units, c, sizeof(UnitFileList), compare_unit_file_list);
762 output_unit_file_list(units, c);
763 }
764
765 r = 0;
766
767 finish:
768 if (m)
769 dbus_message_unref(m);
770
771 if (reply)
772 dbus_message_unref(reply);
773
774 free(units);
775
776 dbus_error_free(&error);
777
778 return r;
779 }
780
781 static int dot_one_property(const char *name, const char *prop, DBusMessageIter *iter) {
782 static const char * const colors[] = {
783 "Requires", "[color=\"black\"]",
784 "RequiresOverridable", "[color=\"black\"]",
785 "Requisite", "[color=\"darkblue\"]",
786 "RequisiteOverridable", "[color=\"darkblue\"]",
787 "Wants", "[color=\"darkgrey\"]",
788 "Conflicts", "[color=\"red\"]",
789 "ConflictedBy", "[color=\"red\"]",
790 "After", "[color=\"green\"]"
791 };
792
793 const char *c = NULL;
794 unsigned i;
795
796 assert(name);
797 assert(prop);
798 assert(iter);
799
800 for (i = 0; i < ELEMENTSOF(colors); i += 2)
801 if (streq(colors[i], prop)) {
802 c = colors[i+1];
803 break;
804 }
805
806 if (!c)
807 return 0;
808
809 if (arg_dot != DOT_ALL)
810 if ((arg_dot == DOT_ORDER) != streq(prop, "After"))
811 return 0;
812
813 switch (dbus_message_iter_get_arg_type(iter)) {
814
815 case DBUS_TYPE_ARRAY:
816
817 if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRING) {
818 DBusMessageIter sub;
819
820 dbus_message_iter_recurse(iter, &sub);
821
822 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
823 const char *s;
824
825 assert(dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING);
826 dbus_message_iter_get_basic(&sub, &s);
827 printf("\t\"%s\"->\"%s\" %s;\n", name, s, c);
828
829 dbus_message_iter_next(&sub);
830 }
831
832 return 0;
833 }
834 }
835
836 return 0;
837 }
838
839 static int dot_one(DBusConnection *bus, const char *name, const char *path) {
840 DBusMessage *m = NULL, *reply = NULL;
841 const char *interface = "org.freedesktop.systemd1.Unit";
842 int r;
843 DBusError error;
844 DBusMessageIter iter, sub, sub2, sub3;
845
846 assert(bus);
847 assert(path);
848
849 dbus_error_init(&error);
850
851 if (!(m = dbus_message_new_method_call(
852 "org.freedesktop.systemd1",
853 path,
854 "org.freedesktop.DBus.Properties",
855 "GetAll"))) {
856 log_error("Could not allocate message.");
857 r = -ENOMEM;
858 goto finish;
859 }
860
861 if (!dbus_message_append_args(m,
862 DBUS_TYPE_STRING, &interface,
863 DBUS_TYPE_INVALID)) {
864 log_error("Could not append arguments to message.");
865 r = -ENOMEM;
866 goto finish;
867 }
868
869 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
870 log_error("Failed to issue method call: %s", bus_error_message(&error));
871 r = -EIO;
872 goto finish;
873 }
874
875 if (!dbus_message_iter_init(reply, &iter) ||
876 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
877 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_DICT_ENTRY) {
878 log_error("Failed to parse reply.");
879 r = -EIO;
880 goto finish;
881 }
882
883 dbus_message_iter_recurse(&iter, &sub);
884
885 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
886 const char *prop;
887
888 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_DICT_ENTRY) {
889 log_error("Failed to parse reply.");
890 r = -EIO;
891 goto finish;
892 }
893
894 dbus_message_iter_recurse(&sub, &sub2);
895
896 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &prop, true) < 0) {
897 log_error("Failed to parse reply.");
898 r = -EIO;
899 goto finish;
900 }
901
902 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT) {
903 log_error("Failed to parse reply.");
904 r = -EIO;
905 goto finish;
906 }
907
908 dbus_message_iter_recurse(&sub2, &sub3);
909
910 if (dot_one_property(name, prop, &sub3)) {
911 log_error("Failed to parse reply.");
912 r = -EIO;
913 goto finish;
914 }
915
916 dbus_message_iter_next(&sub);
917 }
918
919 r = 0;
920
921 finish:
922 if (m)
923 dbus_message_unref(m);
924
925 if (reply)
926 dbus_message_unref(reply);
927
928 dbus_error_free(&error);
929
930 return r;
931 }
932
933 static int dot(DBusConnection *bus, char **args) {
934 DBusMessage *m = NULL, *reply = NULL;
935 DBusError error;
936 int r;
937 DBusMessageIter iter, sub, sub2;
938
939 dbus_error_init(&error);
940
941 assert(bus);
942
943 if (!(m = dbus_message_new_method_call(
944 "org.freedesktop.systemd1",
945 "/org/freedesktop/systemd1",
946 "org.freedesktop.systemd1.Manager",
947 "ListUnits"))) {
948 log_error("Could not allocate message.");
949 return -ENOMEM;
950 }
951
952 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
953 log_error("Failed to issue method call: %s", bus_error_message(&error));
954 r = -EIO;
955 goto finish;
956 }
957
958 if (!dbus_message_iter_init(reply, &iter) ||
959 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
960 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
961 log_error("Failed to parse reply.");
962 r = -EIO;
963 goto finish;
964 }
965
966 printf("digraph systemd {\n");
967
968 dbus_message_iter_recurse(&iter, &sub);
969 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
970 const char *id, *description, *load_state, *active_state, *sub_state, *following, *unit_path;
971
972 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
973 log_error("Failed to parse reply.");
974 r = -EIO;
975 goto finish;
976 }
977
978 dbus_message_iter_recurse(&sub, &sub2);
979
980 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &id, true) < 0 ||
981 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &description, true) < 0 ||
982 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &load_state, true) < 0 ||
983 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &active_state, true) < 0 ||
984 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &sub_state, true) < 0 ||
985 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &following, true) < 0 ||
986 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &unit_path, true) < 0) {
987 log_error("Failed to parse reply.");
988 r = -EIO;
989 goto finish;
990 }
991
992 if ((r = dot_one(bus, id, unit_path)) < 0)
993 goto finish;
994
995 /* printf("\t\"%s\";\n", id); */
996 dbus_message_iter_next(&sub);
997 }
998
999 printf("}\n");
1000
1001 log_info(" Color legend: black = Requires\n"
1002 " dark blue = Requisite\n"
1003 " dark grey = Wants\n"
1004 " red = Conflicts\n"
1005 " green = After\n");
1006
1007 if (on_tty())
1008 log_notice("-- You probably want to process this output with graphviz' dot tool.\n"
1009 "-- Try a shell pipeline like 'systemctl dot | dot -Tsvg > systemd.svg'!\n");
1010
1011 r = 0;
1012
1013 finish:
1014 if (m)
1015 dbus_message_unref(m);
1016
1017 if (reply)
1018 dbus_message_unref(reply);
1019
1020 dbus_error_free(&error);
1021
1022 return r;
1023 }
1024
1025 static int list_jobs(DBusConnection *bus, char **args) {
1026 DBusMessage *m = NULL, *reply = NULL;
1027 DBusError error;
1028 int r;
1029 DBusMessageIter iter, sub, sub2;
1030 unsigned k = 0;
1031
1032 dbus_error_init(&error);
1033
1034 assert(bus);
1035
1036 pager_open_if_enabled();
1037
1038 if (!(m = dbus_message_new_method_call(
1039 "org.freedesktop.systemd1",
1040 "/org/freedesktop/systemd1",
1041 "org.freedesktop.systemd1.Manager",
1042 "ListJobs"))) {
1043 log_error("Could not allocate message.");
1044 return -ENOMEM;
1045 }
1046
1047 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1048 log_error("Failed to issue method call: %s", bus_error_message(&error));
1049 r = -EIO;
1050 goto finish;
1051 }
1052
1053 if (!dbus_message_iter_init(reply, &iter) ||
1054 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
1055 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
1056 log_error("Failed to parse reply.");
1057 r = -EIO;
1058 goto finish;
1059 }
1060
1061 dbus_message_iter_recurse(&iter, &sub);
1062
1063 if (on_tty())
1064 printf("%4s %-25s %-15s %-7s\n", "JOB", "UNIT", "TYPE", "STATE");
1065
1066 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
1067 const char *name, *type, *state, *job_path, *unit_path;
1068 uint32_t id;
1069 char *e;
1070
1071 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
1072 log_error("Failed to parse reply.");
1073 r = -EIO;
1074 goto finish;
1075 }
1076
1077 dbus_message_iter_recurse(&sub, &sub2);
1078
1079 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &id, true) < 0 ||
1080 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0 ||
1081 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) < 0 ||
1082 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &state, true) < 0 ||
1083 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &job_path, true) < 0 ||
1084 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &unit_path, false) < 0) {
1085 log_error("Failed to parse reply.");
1086 r = -EIO;
1087 goto finish;
1088 }
1089
1090 e = arg_full ? NULL : ellipsize(name, 25, 33);
1091 printf("%4u %-25s %-15s %-7s\n", id, e ? e : name, type, state);
1092 free(e);
1093
1094 k++;
1095
1096 dbus_message_iter_next(&sub);
1097 }
1098
1099 if (on_tty())
1100 printf("\n%u jobs listed.\n", k);
1101
1102 r = 0;
1103
1104 finish:
1105 if (m)
1106 dbus_message_unref(m);
1107
1108 if (reply)
1109 dbus_message_unref(reply);
1110
1111 dbus_error_free(&error);
1112
1113 return r;
1114 }
1115
1116 static int load_unit(DBusConnection *bus, char **args) {
1117 DBusMessage *m = NULL;
1118 DBusError error;
1119 int r;
1120 char **name;
1121
1122 dbus_error_init(&error);
1123
1124 assert(bus);
1125 assert(args);
1126
1127 STRV_FOREACH(name, args+1) {
1128 DBusMessage *reply;
1129 bool b;
1130 char *n;
1131
1132 if (!(m = dbus_message_new_method_call(
1133 "org.freedesktop.systemd1",
1134 "/org/freedesktop/systemd1",
1135 "org.freedesktop.systemd1.Manager",
1136 "LoadUnit"))) {
1137 log_error("Could not allocate message.");
1138 r = -ENOMEM;
1139 goto finish;
1140 }
1141
1142 n = unit_name_mangle(*name);
1143 b = dbus_message_append_args(m,
1144 DBUS_TYPE_STRING, n ? &n : name,
1145 DBUS_TYPE_INVALID);
1146 free(n);
1147 if (!b) {
1148 log_error("Could not append arguments to message.");
1149 r = -ENOMEM;
1150 goto finish;
1151 }
1152
1153 reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
1154 if (!reply) {
1155 log_error("Failed to issue method call: %s", bus_error_message(&error));
1156 r = -EIO;
1157 goto finish;
1158 }
1159
1160 dbus_message_unref(m);
1161 dbus_message_unref(reply);
1162
1163 m = reply = NULL;
1164 }
1165
1166 r = 0;
1167
1168 finish:
1169 if (m)
1170 dbus_message_unref(m);
1171
1172 dbus_error_free(&error);
1173
1174 return r;
1175 }
1176
1177 static int cancel_job(DBusConnection *bus, char **args) {
1178 DBusMessage *m = NULL, *reply = NULL;
1179 DBusError error;
1180 int r;
1181 char **name;
1182
1183 dbus_error_init(&error);
1184
1185 assert(bus);
1186 assert(args);
1187
1188 if (strv_length(args) <= 1)
1189 return daemon_reload(bus, args);
1190
1191 STRV_FOREACH(name, args+1) {
1192 unsigned id;
1193 const char *path;
1194
1195 if (!(m = dbus_message_new_method_call(
1196 "org.freedesktop.systemd1",
1197 "/org/freedesktop/systemd1",
1198 "org.freedesktop.systemd1.Manager",
1199 "GetJob"))) {
1200 log_error("Could not allocate message.");
1201 r = -ENOMEM;
1202 goto finish;
1203 }
1204
1205 if ((r = safe_atou(*name, &id)) < 0) {
1206 log_error("Failed to parse job id: %s", strerror(-r));
1207 goto finish;
1208 }
1209
1210 assert_cc(sizeof(uint32_t) == sizeof(id));
1211 if (!dbus_message_append_args(m,
1212 DBUS_TYPE_UINT32, &id,
1213 DBUS_TYPE_INVALID)) {
1214 log_error("Could not append arguments to message.");
1215 r = -ENOMEM;
1216 goto finish;
1217 }
1218
1219 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1220 log_error("Failed to issue method call: %s", bus_error_message(&error));
1221 r = -EIO;
1222 goto finish;
1223 }
1224
1225 if (!dbus_message_get_args(reply, &error,
1226 DBUS_TYPE_OBJECT_PATH, &path,
1227 DBUS_TYPE_INVALID)) {
1228 log_error("Failed to parse reply: %s", bus_error_message(&error));
1229 r = -EIO;
1230 goto finish;
1231 }
1232
1233 dbus_message_unref(m);
1234 if (!(m = dbus_message_new_method_call(
1235 "org.freedesktop.systemd1",
1236 path,
1237 "org.freedesktop.systemd1.Job",
1238 "Cancel"))) {
1239 log_error("Could not allocate message.");
1240 r = -ENOMEM;
1241 goto finish;
1242 }
1243
1244 dbus_message_unref(reply);
1245 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1246 log_error("Failed to issue method call: %s", bus_error_message(&error));
1247 r = -EIO;
1248 goto finish;
1249 }
1250
1251 dbus_message_unref(m);
1252 dbus_message_unref(reply);
1253 m = reply = NULL;
1254 }
1255
1256 r = 0;
1257
1258 finish:
1259 if (m)
1260 dbus_message_unref(m);
1261
1262 if (reply)
1263 dbus_message_unref(reply);
1264
1265 dbus_error_free(&error);
1266
1267 return r;
1268 }
1269
1270 static bool need_daemon_reload(DBusConnection *bus, const char *unit) {
1271 DBusMessage *m = NULL, *reply = NULL;
1272 dbus_bool_t b = FALSE;
1273 DBusMessageIter iter, sub;
1274 const char
1275 *interface = "org.freedesktop.systemd1.Unit",
1276 *property = "NeedDaemonReload",
1277 *path;
1278 char *n;
1279 bool k;
1280
1281 /* We ignore all errors here, since this is used to show a warning only */
1282
1283 m = dbus_message_new_method_call(
1284 "org.freedesktop.systemd1",
1285 "/org/freedesktop/systemd1",
1286 "org.freedesktop.systemd1.Manager",
1287 "GetUnit");
1288 if (!m)
1289 goto finish;
1290
1291 n = unit_name_mangle(unit);
1292 k = dbus_message_append_args(m,
1293 DBUS_TYPE_STRING, n ? (const char**) &n : &unit,
1294 DBUS_TYPE_INVALID);
1295 free(n);
1296 if (!k)
1297 goto finish;
1298
1299 reply = dbus_connection_send_with_reply_and_block(bus, m, -1, NULL);
1300 if (!reply)
1301 goto finish;
1302
1303 if (!dbus_message_get_args(reply, NULL,
1304 DBUS_TYPE_OBJECT_PATH, &path,
1305 DBUS_TYPE_INVALID))
1306 goto finish;
1307
1308 dbus_message_unref(m);
1309 m = dbus_message_new_method_call(
1310 "org.freedesktop.systemd1",
1311 path,
1312 "org.freedesktop.DBus.Properties",
1313 "Get");
1314 if (!m)
1315 goto finish;
1316
1317 if (!dbus_message_append_args(m,
1318 DBUS_TYPE_STRING, &interface,
1319 DBUS_TYPE_STRING, &property,
1320 DBUS_TYPE_INVALID)) {
1321 goto finish;
1322 }
1323
1324 dbus_message_unref(reply);
1325 reply = dbus_connection_send_with_reply_and_block(bus, m, -1, NULL);
1326 if (!reply)
1327 goto finish;
1328
1329 if (!dbus_message_iter_init(reply, &iter) ||
1330 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT)
1331 goto finish;
1332
1333 dbus_message_iter_recurse(&iter, &sub);
1334
1335 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_BOOLEAN)
1336 goto finish;
1337
1338 dbus_message_iter_get_basic(&sub, &b);
1339
1340 finish:
1341 if (m)
1342 dbus_message_unref(m);
1343
1344 if (reply)
1345 dbus_message_unref(reply);
1346
1347 return b;
1348 }
1349
1350 typedef struct WaitData {
1351 Set *set;
1352 char *result;
1353 } WaitData;
1354
1355 static DBusHandlerResult wait_filter(DBusConnection *connection, DBusMessage *message, void *data) {
1356 DBusError error;
1357 WaitData *d = data;
1358
1359 assert(connection);
1360 assert(message);
1361 assert(d);
1362
1363 dbus_error_init(&error);
1364
1365 log_debug("Got D-Bus request: %s.%s() on %s",
1366 dbus_message_get_interface(message),
1367 dbus_message_get_member(message),
1368 dbus_message_get_path(message));
1369
1370 if (dbus_message_is_signal(message, DBUS_INTERFACE_LOCAL, "Disconnected")) {
1371 log_error("Warning! D-Bus connection terminated.");
1372 dbus_connection_close(connection);
1373
1374 } else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "JobRemoved")) {
1375 uint32_t id;
1376 const char *path, *result, *unit;
1377 dbus_bool_t success = true;
1378
1379 if (dbus_message_get_args(message, &error,
1380 DBUS_TYPE_UINT32, &id,
1381 DBUS_TYPE_OBJECT_PATH, &path,
1382 DBUS_TYPE_STRING, &unit,
1383 DBUS_TYPE_STRING, &result,
1384 DBUS_TYPE_INVALID)) {
1385 char *p;
1386
1387 p = set_remove(d->set, (char*) path);
1388 free(p);
1389
1390 if (*result)
1391 d->result = strdup(result);
1392
1393 goto finish;
1394 }
1395 #ifndef LEGACY
1396 dbus_error_free(&error);
1397 if (dbus_message_get_args(message, &error,
1398 DBUS_TYPE_UINT32, &id,
1399 DBUS_TYPE_OBJECT_PATH, &path,
1400 DBUS_TYPE_STRING, &result,
1401 DBUS_TYPE_INVALID)) {
1402 char *p;
1403
1404 /* Compatibility with older systemd versions <
1405 * 183 during upgrades. This should be dropped
1406 * one day. */
1407 p = set_remove(d->set, (char*) path);
1408 free(p);
1409
1410 if (*result)
1411 d->result = strdup(result);
1412
1413 goto finish;
1414 }
1415
1416 dbus_error_free(&error);
1417 if (dbus_message_get_args(message, &error,
1418 DBUS_TYPE_UINT32, &id,
1419 DBUS_TYPE_OBJECT_PATH, &path,
1420 DBUS_TYPE_BOOLEAN, &success,
1421 DBUS_TYPE_INVALID)) {
1422 char *p;
1423
1424 /* Compatibility with older systemd versions <
1425 * 19 during upgrades. This should be dropped
1426 * one day */
1427
1428 p = set_remove(d->set, (char*) path);
1429 free(p);
1430
1431 if (!success)
1432 d->result = strdup("failed");
1433
1434 goto finish;
1435 }
1436 #endif
1437
1438 log_error("Failed to parse message: %s", bus_error_message(&error));
1439 }
1440
1441 finish:
1442 dbus_error_free(&error);
1443 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1444 }
1445
1446 static int enable_wait_for_jobs(DBusConnection *bus) {
1447 DBusError error;
1448
1449 assert(bus);
1450
1451 if (private_bus)
1452 return 0;
1453
1454 dbus_error_init(&error);
1455 dbus_bus_add_match(bus,
1456 "type='signal',"
1457 "sender='org.freedesktop.systemd1',"
1458 "interface='org.freedesktop.systemd1.Manager',"
1459 "member='JobRemoved',"
1460 "path='/org/freedesktop/systemd1'",
1461 &error);
1462
1463 if (dbus_error_is_set(&error)) {
1464 log_error("Failed to add match: %s", bus_error_message(&error));
1465 dbus_error_free(&error);
1466 return -EIO;
1467 }
1468
1469 /* This is slightly dirty, since we don't undo the match registrations. */
1470 return 0;
1471 }
1472
1473 static int wait_for_jobs(DBusConnection *bus, Set *s) {
1474 int r;
1475 WaitData d;
1476
1477 assert(bus);
1478 assert(s);
1479
1480 zero(d);
1481 d.set = s;
1482
1483 if (!dbus_connection_add_filter(bus, wait_filter, &d, NULL)) {
1484 log_error("Failed to add filter.");
1485 r = -ENOMEM;
1486 goto finish;
1487 }
1488
1489 while (!set_isempty(s) &&
1490 dbus_connection_read_write_dispatch(bus, -1))
1491 ;
1492
1493 if (!arg_quiet && d.result) {
1494 if (streq(d.result, "timeout"))
1495 log_error("Job timed out.");
1496 else if (streq(d.result, "canceled"))
1497 log_error("Job canceled.");
1498 else if (streq(d.result, "dependency"))
1499 log_error("A dependency job failed. See system journal for details.");
1500 else if (!streq(d.result, "done") && !streq(d.result, "skipped"))
1501 log_error("Job failed. See system journal and 'systemctl status' for details.");
1502 }
1503
1504 if (streq_ptr(d.result, "timeout"))
1505 r = -ETIME;
1506 else if (streq_ptr(d.result, "canceled"))
1507 r = -ECANCELED;
1508 else if (!streq_ptr(d.result, "done") && !streq_ptr(d.result, "skipped"))
1509 r = -EIO;
1510 else
1511 r = 0;
1512
1513 free(d.result);
1514
1515 finish:
1516 /* This is slightly dirty, since we don't undo the filter registration. */
1517
1518 return r;
1519 }
1520
1521 static int check_one_unit(DBusConnection *bus, char *name, bool quiet) {
1522 DBusMessage *m = NULL, *reply = NULL;
1523 DBusError error;
1524 DBusMessageIter iter, sub;
1525 const char
1526 *interface = "org.freedesktop.systemd1.Unit",
1527 *property = "ActiveState";
1528 const char *path = NULL;
1529 const char *state;
1530 int r = 3; /* According to LSB: "program is not running" */
1531 char *n;
1532 bool b;
1533
1534 assert(bus);
1535 assert(name);
1536
1537 dbus_error_init(&error);
1538
1539 m = dbus_message_new_method_call(
1540 "org.freedesktop.systemd1",
1541 "/org/freedesktop/systemd1",
1542 "org.freedesktop.systemd1.Manager",
1543 "GetUnit");
1544 if (!m) {
1545 log_error("Could not allocate message.");
1546 r = -ENOMEM;
1547 goto finish;
1548 }
1549
1550 n = unit_name_mangle(name);
1551 b = dbus_message_append_args(m,
1552 DBUS_TYPE_STRING, n ? &n : &name,
1553 DBUS_TYPE_INVALID);
1554 free(n);
1555 if (!b) {
1556 log_error("Could not append arguments to message.");
1557 r = -ENOMEM;
1558 goto finish;
1559 }
1560
1561 reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
1562 if (!reply) {
1563 /* Hmm, cannot figure out anything about this unit... */
1564 if (!quiet)
1565 puts("unknown");
1566
1567 goto finish;
1568 }
1569
1570 if (!dbus_message_get_args(reply, &error,
1571 DBUS_TYPE_OBJECT_PATH, &path,
1572 DBUS_TYPE_INVALID)) {
1573 log_error("Failed to parse reply: %s", bus_error_message(&error));
1574 r = -EIO;
1575 goto finish;
1576 }
1577
1578 dbus_message_unref(m);
1579 m = dbus_message_new_method_call(
1580 "org.freedesktop.systemd1",
1581 path,
1582 "org.freedesktop.DBus.Properties",
1583 "Get");
1584 if (!m) {
1585 log_error("Could not allocate message.");
1586 r = -ENOMEM;
1587 goto finish;
1588 }
1589
1590 if (!dbus_message_append_args(m,
1591 DBUS_TYPE_STRING, &interface,
1592 DBUS_TYPE_STRING, &property,
1593 DBUS_TYPE_INVALID)) {
1594 log_error("Could not append arguments to message.");
1595 r = -ENOMEM;
1596 goto finish;
1597 }
1598
1599 dbus_message_unref(reply);
1600 reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
1601 if (!reply) {
1602 log_error("Failed to issue method call: %s", bus_error_message(&error));
1603 r = -EIO;
1604 goto finish;
1605 }
1606
1607 if (!dbus_message_iter_init(reply, &iter) ||
1608 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
1609 log_error("Failed to parse reply.");
1610 r = -EIO;
1611 goto finish;
1612 }
1613
1614 dbus_message_iter_recurse(&iter, &sub);
1615
1616 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
1617 log_error("Failed to parse reply.");
1618 r = -EIO;
1619 goto finish;
1620 }
1621
1622 dbus_message_iter_get_basic(&sub, &state);
1623
1624 if (!quiet)
1625 puts(state);
1626
1627 if (streq(state, "active") || streq(state, "reloading"))
1628 r = 0;
1629
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 return r;
1640 }
1641
1642 static void check_triggering_units(
1643 DBusConnection *bus,
1644 const char *unit_name) {
1645
1646 DBusError error;
1647 DBusMessage *m = NULL, *reply = NULL;
1648 DBusMessageIter iter, sub;
1649 char *service_trigger = NULL;
1650 const char *interface = "org.freedesktop.systemd1.Unit",
1651 *triggered_by_property = "TriggeredBy";
1652
1653 char *unit_path = NULL, *n = NULL;
1654 bool print_warning_label = true;
1655
1656 dbus_error_init(&error);
1657
1658 n = unit_name_mangle(unit_name);
1659 unit_path = unit_dbus_path_from_name(n ? n : unit_name);
1660 free(n);
1661 if (!unit_path) {
1662 log_error("Could not allocate dbus path.");
1663 goto finish;
1664 }
1665
1666 m = dbus_message_new_method_call("org.freedesktop.systemd1",
1667 unit_path,
1668 "org.freedesktop.DBus.Properties",
1669 "Get");
1670 if (!m) {
1671 log_error("Could not allocate message.");
1672 goto finish;
1673 }
1674
1675 if (!dbus_message_append_args(m,
1676 DBUS_TYPE_STRING, &interface,
1677 DBUS_TYPE_STRING, &triggered_by_property,
1678 DBUS_TYPE_INVALID)) {
1679 log_error("Could not append arguments to message.");
1680 goto finish;
1681 }
1682
1683 reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
1684 if (!reply) {
1685 log_error("Failed to issue method call: %s", bus_error_message(&error));
1686 goto finish;
1687 }
1688
1689 if (!dbus_message_iter_init(reply, &iter) ||
1690 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
1691 log_error("Failed to parse reply: %s", bus_error_message(&error));
1692 goto finish;
1693
1694 }
1695
1696 dbus_message_iter_recurse(&iter, &sub);
1697 dbus_message_iter_recurse(&sub, &iter);
1698 sub = iter;
1699
1700 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
1701 int r;
1702
1703 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
1704 log_error("Failed to parse reply: %s", bus_error_message(&error));
1705 goto finish;
1706 }
1707
1708 dbus_message_iter_get_basic(&sub, &service_trigger);
1709
1710 r = check_one_unit(bus, service_trigger, true);
1711 if (r < 0)
1712 goto finish;
1713 if (r == 0) {
1714 if (print_warning_label) {
1715 log_warning("Warning: Stopping %s, but it can still be activated by:", unit_name);
1716 print_warning_label = false;
1717 }
1718 log_warning(" %s", service_trigger);
1719 }
1720
1721 dbus_message_iter_next(&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 char *n;
1747 bool b;
1748
1749 assert(bus);
1750 assert(method);
1751 assert(name);
1752 assert(mode);
1753 assert(error);
1754 assert(arg_no_block || s);
1755
1756 m = dbus_message_new_method_call(
1757 "org.freedesktop.systemd1",
1758 "/org/freedesktop/systemd1",
1759 "org.freedesktop.systemd1.Manager",
1760 method);
1761 if (!m) {
1762 log_error("Could not allocate message.");
1763 r = -ENOMEM;
1764 goto finish;
1765 }
1766
1767 n = unit_name_mangle(name);
1768 b = dbus_message_append_args(m,
1769 DBUS_TYPE_STRING, n ? (const char **) &n : &name,
1770 DBUS_TYPE_STRING, &mode,
1771 DBUS_TYPE_INVALID);
1772 free(n);
1773 if (!b) {
1774 log_error("Could not append arguments to message.");
1775 r = -ENOMEM;
1776 goto finish;
1777 }
1778
1779 reply = dbus_connection_send_with_reply_and_block(bus, m, -1, error);
1780 if (!reply) {
1781
1782 if (arg_action != ACTION_SYSTEMCTL && error_is_no_service(error)) {
1783 /* There's always a fallback possible for
1784 * legacy actions. */
1785 r = -EADDRNOTAVAIL;
1786 goto finish;
1787 }
1788
1789 log_error("Failed to issue method call: %s", bus_error_message(error));
1790 r = -EIO;
1791 goto finish;
1792 }
1793
1794 if (!dbus_message_get_args(reply, error,
1795 DBUS_TYPE_OBJECT_PATH, &path,
1796 DBUS_TYPE_INVALID)) {
1797 log_error("Failed to parse reply: %s", bus_error_message(error));
1798 r = -EIO;
1799 goto finish;
1800 }
1801
1802 if (need_daemon_reload(bus, name))
1803 log_warning("Warning: Unit file of created job changed on disk, 'systemctl %s daemon-reload' recommended.",
1804 arg_scope == UNIT_FILE_SYSTEM ? "--system" : "--user");
1805
1806 if (!arg_no_block) {
1807 char *p;
1808
1809 if (!(p = strdup(path))) {
1810 log_error("Failed to duplicate path.");
1811 r = -ENOMEM;
1812 goto finish;
1813 }
1814
1815 if ((r = set_put(s, p)) < 0) {
1816 free(p);
1817 log_error("Failed to add path to set.");
1818 goto finish;
1819 }
1820 }
1821
1822 /* When stopping a unit warn if it can still be triggered by
1823 * another active unit (socket, path, timer) */
1824 if (!arg_quiet && streq(method, "StopUnit"))
1825 check_triggering_units(bus, name);
1826
1827 r = 0;
1828
1829 finish:
1830 if (m)
1831 dbus_message_unref(m);
1832
1833 if (reply)
1834 dbus_message_unref(reply);
1835
1836 return r;
1837 }
1838
1839 static enum action verb_to_action(const char *verb) {
1840 if (streq(verb, "halt"))
1841 return ACTION_HALT;
1842 else if (streq(verb, "poweroff"))
1843 return ACTION_POWEROFF;
1844 else if (streq(verb, "reboot"))
1845 return ACTION_REBOOT;
1846 else if (streq(verb, "kexec"))
1847 return ACTION_KEXEC;
1848 else if (streq(verb, "rescue"))
1849 return ACTION_RESCUE;
1850 else if (streq(verb, "emergency"))
1851 return ACTION_EMERGENCY;
1852 else if (streq(verb, "default"))
1853 return ACTION_DEFAULT;
1854 else if (streq(verb, "exit"))
1855 return ACTION_EXIT;
1856 else if (streq(verb, "suspend"))
1857 return ACTION_SUSPEND;
1858 else if (streq(verb, "hibernate"))
1859 return ACTION_HIBERNATE;
1860 else
1861 return ACTION_INVALID;
1862 }
1863
1864 static int start_unit(DBusConnection *bus, char **args) {
1865
1866 static const char * const table[_ACTION_MAX] = {
1867 [ACTION_HALT] = SPECIAL_HALT_TARGET,
1868 [ACTION_POWEROFF] = SPECIAL_POWEROFF_TARGET,
1869 [ACTION_REBOOT] = SPECIAL_REBOOT_TARGET,
1870 [ACTION_KEXEC] = SPECIAL_KEXEC_TARGET,
1871 [ACTION_RUNLEVEL2] = SPECIAL_RUNLEVEL2_TARGET,
1872 [ACTION_RUNLEVEL3] = SPECIAL_RUNLEVEL3_TARGET,
1873 [ACTION_RUNLEVEL4] = SPECIAL_RUNLEVEL4_TARGET,
1874 [ACTION_RUNLEVEL5] = SPECIAL_RUNLEVEL5_TARGET,
1875 [ACTION_RESCUE] = SPECIAL_RESCUE_TARGET,
1876 [ACTION_EMERGENCY] = SPECIAL_EMERGENCY_TARGET,
1877 [ACTION_DEFAULT] = SPECIAL_DEFAULT_TARGET,
1878 [ACTION_EXIT] = SPECIAL_EXIT_TARGET,
1879 [ACTION_SUSPEND] = SPECIAL_SUSPEND_TARGET,
1880 [ACTION_HIBERNATE] = SPECIAL_HIBERNATE_TARGET
1881 };
1882
1883 int r, ret = 0;
1884 const char *method, *mode, *one_name;
1885 Set *s = NULL;
1886 DBusError error;
1887 char **name;
1888
1889 dbus_error_init(&error);
1890
1891 assert(bus);
1892
1893 ask_password_agent_open_if_enabled();
1894
1895 if (arg_action == ACTION_SYSTEMCTL) {
1896 method =
1897 streq(args[0], "stop") ||
1898 streq(args[0], "condstop") ? "StopUnit" :
1899 streq(args[0], "reload") ? "ReloadUnit" :
1900 streq(args[0], "restart") ? "RestartUnit" :
1901
1902 streq(args[0], "try-restart") ||
1903 streq(args[0], "condrestart") ? "TryRestartUnit" :
1904
1905 streq(args[0], "reload-or-restart") ? "ReloadOrRestartUnit" :
1906
1907 streq(args[0], "reload-or-try-restart") ||
1908 streq(args[0], "condreload") ||
1909
1910 streq(args[0], "force-reload") ? "ReloadOrTryRestartUnit" :
1911 "StartUnit";
1912
1913 mode =
1914 (streq(args[0], "isolate") ||
1915 streq(args[0], "rescue") ||
1916 streq(args[0], "emergency")) ? "isolate" : arg_job_mode;
1917
1918 one_name = table[verb_to_action(args[0])];
1919
1920 } else {
1921 assert(arg_action < ELEMENTSOF(table));
1922 assert(table[arg_action]);
1923
1924 method = "StartUnit";
1925
1926 mode = (arg_action == ACTION_EMERGENCY ||
1927 arg_action == ACTION_RESCUE ||
1928 arg_action == ACTION_RUNLEVEL2 ||
1929 arg_action == ACTION_RUNLEVEL3 ||
1930 arg_action == ACTION_RUNLEVEL4 ||
1931 arg_action == ACTION_RUNLEVEL5) ? "isolate" : "replace";
1932
1933 one_name = table[arg_action];
1934 }
1935
1936 if (!arg_no_block) {
1937 if ((ret = enable_wait_for_jobs(bus)) < 0) {
1938 log_error("Could not watch jobs: %s", strerror(-ret));
1939 goto finish;
1940 }
1941
1942 if (!(s = set_new(string_hash_func, string_compare_func))) {
1943 log_error("Failed to allocate set.");
1944 ret = -ENOMEM;
1945 goto finish;
1946 }
1947 }
1948
1949 if (one_name) {
1950 if ((ret = start_unit_one(bus, method, one_name, mode, &error, s)) <= 0)
1951 goto finish;
1952 } else {
1953 STRV_FOREACH(name, args+1)
1954 if ((r = start_unit_one(bus, method, *name, mode, &error, s)) != 0) {
1955 ret = translate_bus_error_to_exit_status(r, &error);
1956 dbus_error_free(&error);
1957 }
1958 }
1959
1960 if (!arg_no_block)
1961 if ((r = wait_for_jobs(bus, s)) < 0) {
1962 ret = r;
1963 goto finish;
1964 }
1965
1966 finish:
1967 if (s)
1968 set_free_free(s);
1969
1970 dbus_error_free(&error);
1971
1972 return ret;
1973 }
1974
1975 /* Ask systemd-logind, which might grant access to unprivileged users
1976 * through PolicyKit */
1977 static int reboot_with_logind(DBusConnection *bus, enum action a) {
1978 #ifdef HAVE_LOGIND
1979 const char *method;
1980 DBusMessage *m = NULL, *reply = NULL;
1981 DBusError error;
1982 dbus_bool_t interactive = true;
1983 int r;
1984
1985 dbus_error_init(&error);
1986
1987 polkit_agent_open_if_enabled();
1988
1989 switch (a) {
1990
1991 case ACTION_REBOOT:
1992 method = "Reboot";
1993 break;
1994
1995 case ACTION_POWEROFF:
1996 method = "PowerOff";
1997 break;
1998
1999 case ACTION_SUSPEND:
2000 method = "Suspend";
2001 break;
2002
2003 case ACTION_HIBERNATE:
2004 method = "Hibernate";
2005 break;
2006
2007 default:
2008 return -EINVAL;
2009 }
2010
2011 m = dbus_message_new_method_call(
2012 "org.freedesktop.login1",
2013 "/org/freedesktop/login1",
2014 "org.freedesktop.login1.Manager",
2015 method);
2016 if (!m) {
2017 log_error("Could not allocate message.");
2018 r = -ENOMEM;
2019 goto finish;
2020 }
2021
2022 if (!dbus_message_append_args(m,
2023 DBUS_TYPE_BOOLEAN, &interactive,
2024 DBUS_TYPE_INVALID)) {
2025 log_error("Could not append arguments to message.");
2026 r = -ENOMEM;
2027 goto finish;
2028 }
2029
2030 reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
2031 if (!reply) {
2032 if (error_is_no_service(&error)) {
2033 log_debug("Failed to issue method call: %s", bus_error_message(&error));
2034 r = -ENOENT;
2035 goto finish;
2036 }
2037
2038 if (dbus_error_has_name(&error, DBUS_ERROR_ACCESS_DENIED)) {
2039 log_debug("Failed to issue method call: %s", bus_error_message(&error));
2040 r = -EACCES;
2041 goto finish;
2042 }
2043
2044 log_info("Failed to issue method call: %s", bus_error_message(&error));
2045 r = -EIO;
2046 goto finish;
2047 }
2048
2049 r = 0;
2050
2051 finish:
2052 if (m)
2053 dbus_message_unref(m);
2054
2055 if (reply)
2056 dbus_message_unref(reply);
2057
2058 dbus_error_free(&error);
2059
2060 return r;
2061 #else
2062 return -ENOSYS;
2063 #endif
2064 }
2065
2066 static int start_special(DBusConnection *bus, char **args) {
2067 enum action a;
2068 int r;
2069
2070 assert(args);
2071
2072 a = verb_to_action(args[0]);
2073
2074 if (arg_force >= 2 && geteuid() != 0) {
2075 log_error("Must be root.");
2076 return -EPERM;
2077 }
2078
2079 if (arg_force >= 2 &&
2080 (a == ACTION_HALT ||
2081 a == ACTION_POWEROFF ||
2082 a == ACTION_REBOOT))
2083 halt_now(a);
2084
2085 if (arg_force >= 1 &&
2086 (a == ACTION_HALT ||
2087 a == ACTION_POWEROFF ||
2088 a == ACTION_REBOOT ||
2089 a == ACTION_KEXEC ||
2090 a == ACTION_EXIT))
2091 return daemon_reload(bus, args);
2092
2093 /* first try logind, to allow authentication with polkit */
2094 if (geteuid() != 0 &&
2095 (a == ACTION_POWEROFF ||
2096 a == ACTION_REBOOT ||
2097 a == ACTION_SUSPEND ||
2098 a == ACTION_HIBERNATE)) {
2099 r = reboot_with_logind(bus, a);
2100 if (r >= 0)
2101 return r;
2102 }
2103
2104 r = start_unit(bus, args);
2105 if (r >= 0)
2106 warn_wall(a);
2107
2108 return r;
2109 }
2110
2111 static int check_unit(DBusConnection *bus, char **args) {
2112 char **name;
2113 int r = 3; /* According to LSB: "program is not running" */
2114
2115 assert(bus);
2116 assert(args);
2117
2118 STRV_FOREACH(name, args+1) {
2119 int state = check_one_unit(bus, *name, arg_quiet);
2120 if (state < 0)
2121 return state;
2122 if (state == 0)
2123 r = 0;
2124 }
2125
2126 return r;
2127 }
2128
2129 static int kill_unit(DBusConnection *bus, char **args) {
2130 DBusMessage *m = NULL;
2131 int r = 0;
2132 DBusError error;
2133 char **name;
2134
2135 assert(bus);
2136 assert(args);
2137
2138 dbus_error_init(&error);
2139
2140 if (!arg_kill_who)
2141 arg_kill_who = "all";
2142
2143 if (!arg_kill_mode)
2144 arg_kill_mode = streq(arg_kill_who, "all") ? "control-group" : "process";
2145
2146 STRV_FOREACH(name, args+1) {
2147 DBusMessage *reply;
2148 char *n;
2149 bool b;
2150
2151 m = dbus_message_new_method_call(
2152 "org.freedesktop.systemd1",
2153 "/org/freedesktop/systemd1",
2154 "org.freedesktop.systemd1.Manager",
2155 "KillUnit");
2156 if (!m) {
2157 log_error("Could not allocate message.");
2158 r = -ENOMEM;
2159 goto finish;
2160 }
2161
2162 n = unit_name_mangle(*name);
2163 b = dbus_message_append_args(m,
2164 DBUS_TYPE_STRING, n ? &n : name,
2165 DBUS_TYPE_STRING, &arg_kill_who,
2166 DBUS_TYPE_STRING, &arg_kill_mode,
2167 DBUS_TYPE_INT32, &arg_signal,
2168 DBUS_TYPE_INVALID);
2169 free(n);
2170 if (!b) {
2171 log_error("Could not append arguments to message.");
2172 r = -ENOMEM;
2173 goto finish;
2174 }
2175
2176 reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
2177 if (!reply) {
2178 log_error("Failed to issue method call: %s", bus_error_message(&error));
2179 dbus_error_free(&error);
2180 r = -EIO;
2181 }
2182
2183 dbus_message_unref(m);
2184
2185 if (reply)
2186 dbus_message_unref(reply);
2187 m = reply = NULL;
2188 }
2189
2190 finish:
2191 if (m)
2192 dbus_message_unref(m);
2193
2194 dbus_error_free(&error);
2195
2196 return r;
2197 }
2198
2199 typedef struct ExecStatusInfo {
2200 char *name;
2201
2202 char *path;
2203 char **argv;
2204
2205 bool ignore;
2206
2207 usec_t start_timestamp;
2208 usec_t exit_timestamp;
2209 pid_t pid;
2210 int code;
2211 int status;
2212
2213 LIST_FIELDS(struct ExecStatusInfo, exec);
2214 } ExecStatusInfo;
2215
2216 static void exec_status_info_free(ExecStatusInfo *i) {
2217 assert(i);
2218
2219 free(i->name);
2220 free(i->path);
2221 strv_free(i->argv);
2222 free(i);
2223 }
2224
2225 static int exec_status_info_deserialize(DBusMessageIter *sub, ExecStatusInfo *i) {
2226 uint64_t start_timestamp, exit_timestamp, start_timestamp_monotonic, exit_timestamp_monotonic;
2227 DBusMessageIter sub2, sub3;
2228 const char*path;
2229 unsigned n;
2230 uint32_t pid;
2231 int32_t code, status;
2232 dbus_bool_t ignore;
2233
2234 assert(i);
2235 assert(i);
2236
2237 if (dbus_message_iter_get_arg_type(sub) != DBUS_TYPE_STRUCT)
2238 return -EIO;
2239
2240 dbus_message_iter_recurse(sub, &sub2);
2241
2242 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, true) < 0)
2243 return -EIO;
2244
2245 if (!(i->path = strdup(path)))
2246 return -ENOMEM;
2247
2248 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_ARRAY ||
2249 dbus_message_iter_get_element_type(&sub2) != DBUS_TYPE_STRING)
2250 return -EIO;
2251
2252 n = 0;
2253 dbus_message_iter_recurse(&sub2, &sub3);
2254 while (dbus_message_iter_get_arg_type(&sub3) != DBUS_TYPE_INVALID) {
2255 assert(dbus_message_iter_get_arg_type(&sub3) == DBUS_TYPE_STRING);
2256 dbus_message_iter_next(&sub3);
2257 n++;
2258 }
2259
2260
2261 if (!(i->argv = new0(char*, n+1)))
2262 return -ENOMEM;
2263
2264 n = 0;
2265 dbus_message_iter_recurse(&sub2, &sub3);
2266 while (dbus_message_iter_get_arg_type(&sub3) != DBUS_TYPE_INVALID) {
2267 const char *s;
2268
2269 assert(dbus_message_iter_get_arg_type(&sub3) == DBUS_TYPE_STRING);
2270 dbus_message_iter_get_basic(&sub3, &s);
2271 dbus_message_iter_next(&sub3);
2272
2273 if (!(i->argv[n++] = strdup(s)))
2274 return -ENOMEM;
2275 }
2276
2277 if (!dbus_message_iter_next(&sub2) ||
2278 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_BOOLEAN, &ignore, true) < 0 ||
2279 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &start_timestamp, true) < 0 ||
2280 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &start_timestamp_monotonic, true) < 0 ||
2281 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &exit_timestamp, true) < 0 ||
2282 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &exit_timestamp_monotonic, true) < 0 ||
2283 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &pid, true) < 0 ||
2284 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_INT32, &code, true) < 0 ||
2285 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_INT32, &status, false) < 0)
2286 return -EIO;
2287
2288 i->ignore = ignore;
2289 i->start_timestamp = (usec_t) start_timestamp;
2290 i->exit_timestamp = (usec_t) exit_timestamp;
2291 i->pid = (pid_t) pid;
2292 i->code = code;
2293 i->status = status;
2294
2295 return 0;
2296 }
2297
2298 typedef struct UnitStatusInfo {
2299 const char *id;
2300 const char *load_state;
2301 const char *active_state;
2302 const char *sub_state;
2303 const char *unit_file_state;
2304
2305 const char *description;
2306 const char *following;
2307
2308 char **documentation;
2309
2310 const char *fragment_path;
2311 const char *source_path;
2312 const char *default_control_group;
2313
2314 const char *load_error;
2315 const char *result;
2316
2317 usec_t inactive_exit_timestamp;
2318 usec_t inactive_exit_timestamp_monotonic;
2319 usec_t active_enter_timestamp;
2320 usec_t active_exit_timestamp;
2321 usec_t inactive_enter_timestamp;
2322
2323 bool need_daemon_reload;
2324
2325 /* Service */
2326 pid_t main_pid;
2327 pid_t control_pid;
2328 const char *status_text;
2329 bool running:1;
2330
2331 usec_t start_timestamp;
2332 usec_t exit_timestamp;
2333
2334 int exit_code, exit_status;
2335
2336 usec_t condition_timestamp;
2337 bool condition_result;
2338
2339 /* Socket */
2340 unsigned n_accepted;
2341 unsigned n_connections;
2342 bool accept;
2343
2344 /* Device */
2345 const char *sysfs_path;
2346
2347 /* Mount, Automount */
2348 const char *where;
2349
2350 /* Swap */
2351 const char *what;
2352
2353 LIST_HEAD(ExecStatusInfo, exec);
2354 } UnitStatusInfo;
2355
2356 static void print_status_info(UnitStatusInfo *i) {
2357 ExecStatusInfo *p;
2358 const char *on, *off, *ss;
2359 usec_t timestamp;
2360 char since1[FORMAT_TIMESTAMP_PRETTY_MAX], *s1;
2361 char since2[FORMAT_TIMESTAMP_MAX], *s2;
2362 const char *path;
2363
2364 assert(i);
2365
2366 /* This shows pretty information about a unit. See
2367 * print_property() for a low-level property printer */
2368
2369 printf("%s", strna(i->id));
2370
2371 if (i->description && !streq_ptr(i->id, i->description))
2372 printf(" - %s", i->description);
2373
2374 printf("\n");
2375
2376 if (i->following)
2377 printf("\t Follow: unit currently follows state of %s\n", i->following);
2378
2379 if (streq_ptr(i->load_state, "error")) {
2380 on = ansi_highlight_red(true);
2381 off = ansi_highlight_red(false);
2382 } else
2383 on = off = "";
2384
2385 path = i->source_path ? i->source_path : i->fragment_path;
2386
2387 if (i->load_error)
2388 printf("\t Loaded: %s%s%s (Reason: %s)\n", on, strna(i->load_state), off, i->load_error);
2389 else if (path && i->unit_file_state)
2390 printf("\t Loaded: %s%s%s (%s; %s)\n", on, strna(i->load_state), off, path, i->unit_file_state);
2391 else if (path)
2392 printf("\t Loaded: %s%s%s (%s)\n", on, strna(i->load_state), off, path);
2393 else
2394 printf("\t Loaded: %s%s%s\n", on, strna(i->load_state), off);
2395
2396 ss = streq_ptr(i->active_state, i->sub_state) ? NULL : i->sub_state;
2397
2398 if (streq_ptr(i->active_state, "failed")) {
2399 on = ansi_highlight_red(true);
2400 off = ansi_highlight_red(false);
2401 } else if (streq_ptr(i->active_state, "active") || streq_ptr(i->active_state, "reloading")) {
2402 on = ansi_highlight_green(true);
2403 off = ansi_highlight_green(false);
2404 } else
2405 on = off = "";
2406
2407 if (ss)
2408 printf("\t Active: %s%s (%s)%s",
2409 on,
2410 strna(i->active_state),
2411 ss,
2412 off);
2413 else
2414 printf("\t Active: %s%s%s",
2415 on,
2416 strna(i->active_state),
2417 off);
2418
2419 if (!isempty(i->result) && !streq(i->result, "success"))
2420 printf(" (Result: %s)", i->result);
2421
2422 timestamp = (streq_ptr(i->active_state, "active") ||
2423 streq_ptr(i->active_state, "reloading")) ? i->active_enter_timestamp :
2424 (streq_ptr(i->active_state, "inactive") ||
2425 streq_ptr(i->active_state, "failed")) ? i->inactive_enter_timestamp :
2426 streq_ptr(i->active_state, "activating") ? i->inactive_exit_timestamp :
2427 i->active_exit_timestamp;
2428
2429 s1 = format_timestamp_pretty(since1, sizeof(since1), timestamp);
2430 s2 = format_timestamp(since2, sizeof(since2), timestamp);
2431
2432 if (s1)
2433 printf(" since %s; %s\n", s2, s1);
2434 else if (s2)
2435 printf(" since %s\n", s2);
2436 else
2437 printf("\n");
2438
2439 if (!i->condition_result && i->condition_timestamp > 0) {
2440 s1 = format_timestamp_pretty(since1, sizeof(since1), i->condition_timestamp);
2441 s2 = format_timestamp(since2, sizeof(since2), i->condition_timestamp);
2442
2443 if (s1)
2444 printf("\t start condition failed at %s; %s\n", s2, s1);
2445 else if (s2)
2446 printf("\t start condition failed at %s\n", s2);
2447 }
2448
2449 if (i->sysfs_path)
2450 printf("\t Device: %s\n", i->sysfs_path);
2451 if (i->where)
2452 printf("\t Where: %s\n", i->where);
2453 if (i->what)
2454 printf("\t What: %s\n", i->what);
2455
2456 if (!strv_isempty(i->documentation)) {
2457 char **t;
2458 bool first = true;
2459
2460 STRV_FOREACH(t, i->documentation) {
2461 if (first) {
2462 printf("\t Docs: %s\n", *t);
2463 first = false;
2464 } else
2465 printf("\t %s\n", *t);
2466 }
2467 }
2468
2469 if (i->accept)
2470 printf("\tAccepted: %u; Connected: %u\n", i->n_accepted, i->n_connections);
2471
2472 LIST_FOREACH(exec, p, i->exec) {
2473 char *t;
2474 bool good;
2475
2476 /* Only show exited processes here */
2477 if (p->code == 0)
2478 continue;
2479
2480 t = strv_join(p->argv, " ");
2481 printf("\t Process: %u %s=%s ", p->pid, p->name, strna(t));
2482 free(t);
2483
2484 good = is_clean_exit_lsb(p->code, p->status);
2485 if (!good) {
2486 on = ansi_highlight_red(true);
2487 off = ansi_highlight_red(false);
2488 } else
2489 on = off = "";
2490
2491 printf("%s(code=%s, ", on, sigchld_code_to_string(p->code));
2492
2493 if (p->code == CLD_EXITED) {
2494 const char *c;
2495
2496 printf("status=%i", p->status);
2497
2498 c = exit_status_to_string(p->status, EXIT_STATUS_SYSTEMD);
2499 if (c)
2500 printf("/%s", c);
2501
2502 } else
2503 printf("signal=%s", signal_to_string(p->status));
2504
2505 printf(")%s\n", off);
2506
2507 if (i->main_pid == p->pid &&
2508 i->start_timestamp == p->start_timestamp &&
2509 i->exit_timestamp == p->start_timestamp)
2510 /* Let's not show this twice */
2511 i->main_pid = 0;
2512
2513 if (p->pid == i->control_pid)
2514 i->control_pid = 0;
2515 }
2516
2517 if (i->main_pid > 0 || i->control_pid > 0) {
2518 printf("\t");
2519
2520 if (i->main_pid > 0) {
2521 printf("Main PID: %u", (unsigned) i->main_pid);
2522
2523 if (i->running) {
2524 char *t = NULL;
2525 get_process_comm(i->main_pid, &t);
2526 if (t) {
2527 printf(" (%s)", t);
2528 free(t);
2529 }
2530 } else if (i->exit_code > 0) {
2531 printf(" (code=%s, ", sigchld_code_to_string(i->exit_code));
2532
2533 if (i->exit_code == CLD_EXITED) {
2534 const char *c;
2535
2536 printf("status=%i", i->exit_status);
2537
2538 c = exit_status_to_string(i->exit_status, EXIT_STATUS_SYSTEMD);
2539 if (c)
2540 printf("/%s", c);
2541
2542 } else
2543 printf("signal=%s", signal_to_string(i->exit_status));
2544 printf(")");
2545 }
2546 }
2547
2548 if (i->main_pid > 0 && i->control_pid > 0)
2549 printf(";");
2550
2551 if (i->control_pid > 0) {
2552 char *t = NULL;
2553
2554 printf(" Control: %u", (unsigned) i->control_pid);
2555
2556 get_process_comm(i->control_pid, &t);
2557 if (t) {
2558 printf(" (%s)", t);
2559 free(t);
2560 }
2561 }
2562
2563 printf("\n");
2564 }
2565
2566 if (i->status_text)
2567 printf("\t Status: \"%s\"\n", i->status_text);
2568
2569 if (i->default_control_group) {
2570 unsigned c;
2571
2572 printf("\t CGroup: %s\n", i->default_control_group);
2573
2574 if (arg_transport != TRANSPORT_SSH) {
2575 unsigned k = 0;
2576 pid_t extra[2];
2577
2578 c = columns();
2579 if (c > 18)
2580 c -= 18;
2581 else
2582 c = 0;
2583
2584 if (i->main_pid > 0)
2585 extra[k++] = i->main_pid;
2586
2587 if (i->control_pid > 0)
2588 extra[k++] = i->control_pid;
2589
2590 show_cgroup_and_extra_by_spec(i->default_control_group, "\t\t ", c, false, arg_all, extra, k);
2591 }
2592 }
2593
2594 if (i->id && arg_transport != TRANSPORT_SSH) {
2595 int flags = (arg_lines*OUTPUT_SHOW_ALL |
2596 arg_follow*OUTPUT_FOLLOW |
2597 !arg_quiet*OUTPUT_WARN_CUTOFF);
2598 printf("\n");
2599 show_journal_by_unit(i->id, arg_output, 0,
2600 i->inactive_exit_timestamp_monotonic,
2601 arg_lines, flags);
2602 }
2603
2604 if (i->need_daemon_reload)
2605 printf("\n%sWarning:%s Unit file changed on disk, 'systemctl %s daemon-reload' recommended.\n",
2606 ansi_highlight_red(true),
2607 ansi_highlight_red(false),
2608 arg_scope == UNIT_FILE_SYSTEM ? "--system" : "--user");
2609 }
2610
2611 static void show_unit_help(UnitStatusInfo *i) {
2612 char **p;
2613
2614 assert(i);
2615
2616 if (!i->documentation) {
2617 log_info("Documentation for %s not known.", i->id);
2618 return;
2619 }
2620
2621 STRV_FOREACH(p, i->documentation) {
2622
2623 if (startswith(*p, "man:")) {
2624 size_t k;
2625 char *e = NULL;
2626 char *page = NULL, *section = NULL;
2627 const char *args[4] = { "man", NULL, NULL, NULL };
2628 pid_t pid;
2629
2630 k = strlen(*p);
2631
2632 if ((*p)[k-1] == ')')
2633 e = strrchr(*p, '(');
2634
2635 if (e) {
2636 page = strndup((*p) + 4, e - *p - 4);
2637 if (!page) {
2638 log_error("Out of memory.");
2639 return;
2640 }
2641
2642 section = strndup(e + 1, *p + k - e - 2);
2643 if (!section) {
2644 free(page);
2645 log_error("Out of memory");
2646 return;
2647 }
2648
2649 args[1] = section;
2650 args[2] = page;
2651 } else
2652 args[1] = *p + 4;
2653
2654 pid = fork();
2655 if (pid < 0) {
2656 log_error("Failed to fork: %m");
2657 free(page);
2658 free(section);
2659 continue;
2660 }
2661
2662 if (pid == 0) {
2663 /* Child */
2664 execvp(args[0], (char**) args);
2665 log_error("Failed to execute man: %m");
2666 _exit(EXIT_FAILURE);
2667 }
2668
2669 free(page);
2670 free(section);
2671
2672 wait_for_terminate(pid, NULL);
2673 } else
2674 log_info("Can't show: %s", *p);
2675 }
2676 }
2677
2678 static int status_property(const char *name, DBusMessageIter *iter, UnitStatusInfo *i) {
2679
2680 assert(name);
2681 assert(iter);
2682 assert(i);
2683
2684 switch (dbus_message_iter_get_arg_type(iter)) {
2685
2686 case DBUS_TYPE_STRING: {
2687 const char *s;
2688
2689 dbus_message_iter_get_basic(iter, &s);
2690
2691 if (!isempty(s)) {
2692 if (streq(name, "Id"))
2693 i->id = s;
2694 else if (streq(name, "LoadState"))
2695 i->load_state = s;
2696 else if (streq(name, "ActiveState"))
2697 i->active_state = s;
2698 else if (streq(name, "SubState"))
2699 i->sub_state = s;
2700 else if (streq(name, "Description"))
2701 i->description = s;
2702 else if (streq(name, "FragmentPath"))
2703 i->fragment_path = s;
2704 else if (streq(name, "SourcePath"))
2705 i->source_path = s;
2706 else if (streq(name, "DefaultControlGroup"))
2707 i->default_control_group = s;
2708 else if (streq(name, "StatusText"))
2709 i->status_text = s;
2710 else if (streq(name, "SysFSPath"))
2711 i->sysfs_path = s;
2712 else if (streq(name, "Where"))
2713 i->where = s;
2714 else if (streq(name, "What"))
2715 i->what = s;
2716 else if (streq(name, "Following"))
2717 i->following = s;
2718 else if (streq(name, "UnitFileState"))
2719 i->unit_file_state = s;
2720 else if (streq(name, "Result"))
2721 i->result = s;
2722 }
2723
2724 break;
2725 }
2726
2727 case DBUS_TYPE_BOOLEAN: {
2728 dbus_bool_t b;
2729
2730 dbus_message_iter_get_basic(iter, &b);
2731
2732 if (streq(name, "Accept"))
2733 i->accept = b;
2734 else if (streq(name, "NeedDaemonReload"))
2735 i->need_daemon_reload = b;
2736 else if (streq(name, "ConditionResult"))
2737 i->condition_result = b;
2738
2739 break;
2740 }
2741
2742 case DBUS_TYPE_UINT32: {
2743 uint32_t u;
2744
2745 dbus_message_iter_get_basic(iter, &u);
2746
2747 if (streq(name, "MainPID")) {
2748 if (u > 0) {
2749 i->main_pid = (pid_t) u;
2750 i->running = true;
2751 }
2752 } else if (streq(name, "ControlPID"))
2753 i->control_pid = (pid_t) u;
2754 else if (streq(name, "ExecMainPID")) {
2755 if (u > 0)
2756 i->main_pid = (pid_t) u;
2757 } else if (streq(name, "NAccepted"))
2758 i->n_accepted = u;
2759 else if (streq(name, "NConnections"))
2760 i->n_connections = u;
2761
2762 break;
2763 }
2764
2765 case DBUS_TYPE_INT32: {
2766 int32_t j;
2767
2768 dbus_message_iter_get_basic(iter, &j);
2769
2770 if (streq(name, "ExecMainCode"))
2771 i->exit_code = (int) j;
2772 else if (streq(name, "ExecMainStatus"))
2773 i->exit_status = (int) j;
2774
2775 break;
2776 }
2777
2778 case DBUS_TYPE_UINT64: {
2779 uint64_t u;
2780
2781 dbus_message_iter_get_basic(iter, &u);
2782
2783 if (streq(name, "ExecMainStartTimestamp"))
2784 i->start_timestamp = (usec_t) u;
2785 else if (streq(name, "ExecMainExitTimestamp"))
2786 i->exit_timestamp = (usec_t) u;
2787 else if (streq(name, "ActiveEnterTimestamp"))
2788 i->active_enter_timestamp = (usec_t) u;
2789 else if (streq(name, "InactiveEnterTimestamp"))
2790 i->inactive_enter_timestamp = (usec_t) u;
2791 else if (streq(name, "InactiveExitTimestamp"))
2792 i->inactive_exit_timestamp = (usec_t) u;
2793 else if (streq(name, "InactiveExitTimestampMonotonic"))
2794 i->inactive_exit_timestamp_monotonic = (usec_t) u;
2795 else if (streq(name, "ActiveExitTimestamp"))
2796 i->active_exit_timestamp = (usec_t) u;
2797 else if (streq(name, "ConditionTimestamp"))
2798 i->condition_timestamp = (usec_t) u;
2799
2800 break;
2801 }
2802
2803 case DBUS_TYPE_ARRAY: {
2804
2805 if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT &&
2806 startswith(name, "Exec")) {
2807 DBusMessageIter sub;
2808
2809 dbus_message_iter_recurse(iter, &sub);
2810 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2811 ExecStatusInfo *info;
2812 int r;
2813
2814 if (!(info = new0(ExecStatusInfo, 1)))
2815 return -ENOMEM;
2816
2817 if (!(info->name = strdup(name))) {
2818 free(info);
2819 return -ENOMEM;
2820 }
2821
2822 if ((r = exec_status_info_deserialize(&sub, info)) < 0) {
2823 free(info);
2824 return r;
2825 }
2826
2827 LIST_PREPEND(ExecStatusInfo, exec, i->exec, info);
2828
2829 dbus_message_iter_next(&sub);
2830 }
2831 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRING &&
2832 streq(name, "Documentation")) {
2833
2834 DBusMessageIter sub;
2835
2836 dbus_message_iter_recurse(iter, &sub);
2837 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING) {
2838 const char *s;
2839 char **l;
2840
2841 dbus_message_iter_get_basic(&sub, &s);
2842
2843 l = strv_append(i->documentation, s);
2844 if (!l)
2845 return -ENOMEM;
2846
2847 strv_free(i->documentation);
2848 i->documentation = l;
2849
2850 dbus_message_iter_next(&sub);
2851 }
2852 }
2853
2854 break;
2855 }
2856
2857 case DBUS_TYPE_STRUCT: {
2858
2859 if (streq(name, "LoadError")) {
2860 DBusMessageIter sub;
2861 const char *n, *message;
2862 int r;
2863
2864 dbus_message_iter_recurse(iter, &sub);
2865
2866 r = bus_iter_get_basic_and_next(&sub, DBUS_TYPE_STRING, &n, true);
2867 if (r < 0)
2868 return r;
2869
2870 r = bus_iter_get_basic_and_next(&sub, DBUS_TYPE_STRING, &message, false);
2871 if (r < 0)
2872 return r;
2873
2874 if (!isempty(message))
2875 i->load_error = message;
2876 }
2877
2878 break;
2879 }
2880 }
2881
2882 return 0;
2883 }
2884
2885 static int print_property(const char *name, DBusMessageIter *iter) {
2886 assert(name);
2887 assert(iter);
2888
2889 /* This is a low-level property printer, see
2890 * print_status_info() for the nicer output */
2891
2892 if (arg_property && !strv_find(arg_property, name))
2893 return 0;
2894
2895 switch (dbus_message_iter_get_arg_type(iter)) {
2896
2897 case DBUS_TYPE_STRUCT: {
2898 DBusMessageIter sub;
2899 dbus_message_iter_recurse(iter, &sub);
2900
2901 if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_UINT32 && streq(name, "Job")) {
2902 uint32_t u;
2903
2904 dbus_message_iter_get_basic(&sub, &u);
2905
2906 if (u)
2907 printf("%s=%u\n", name, (unsigned) u);
2908 else if (arg_all)
2909 printf("%s=\n", name);
2910
2911 return 0;
2912 } else if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING && streq(name, "Unit")) {
2913 const char *s;
2914
2915 dbus_message_iter_get_basic(&sub, &s);
2916
2917 if (arg_all || s[0])
2918 printf("%s=%s\n", name, s);
2919
2920 return 0;
2921 } else if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING && streq(name, "LoadError")) {
2922 const char *a = NULL, *b = NULL;
2923
2924 if (bus_iter_get_basic_and_next(&sub, DBUS_TYPE_STRING, &a, true) >= 0)
2925 bus_iter_get_basic_and_next(&sub, DBUS_TYPE_STRING, &b, false);
2926
2927 if (arg_all || !isempty(a) || !isempty(b))
2928 printf("%s=%s \"%s\"\n", name, strempty(a), strempty(b));
2929
2930 return 0;
2931 }
2932
2933 break;
2934 }
2935
2936 case DBUS_TYPE_ARRAY:
2937
2938 if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "EnvironmentFiles")) {
2939 DBusMessageIter sub, sub2;
2940
2941 dbus_message_iter_recurse(iter, &sub);
2942 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2943 const char *path;
2944 dbus_bool_t ignore;
2945
2946 dbus_message_iter_recurse(&sub, &sub2);
2947
2948 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, true) >= 0 &&
2949 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_BOOLEAN, &ignore, false) >= 0)
2950 printf("EnvironmentFile=%s (ignore_errors=%s)\n", path, yes_no(ignore));
2951
2952 dbus_message_iter_next(&sub);
2953 }
2954
2955 return 0;
2956
2957 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Paths")) {
2958 DBusMessageIter sub, sub2;
2959
2960 dbus_message_iter_recurse(iter, &sub);
2961 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2962 const char *type, *path;
2963
2964 dbus_message_iter_recurse(&sub, &sub2);
2965
2966 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) >= 0 &&
2967 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, false) >= 0)
2968 printf("%s=%s\n", type, path);
2969
2970 dbus_message_iter_next(&sub);
2971 }
2972
2973 return 0;
2974
2975 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Timers")) {
2976 DBusMessageIter sub, sub2;
2977
2978 dbus_message_iter_recurse(iter, &sub);
2979 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2980 const char *base;
2981 uint64_t value, next_elapse;
2982
2983 dbus_message_iter_recurse(&sub, &sub2);
2984
2985 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &base, true) >= 0 &&
2986 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &value, true) >= 0 &&
2987 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &next_elapse, false) >= 0) {
2988 char timespan1[FORMAT_TIMESPAN_MAX], timespan2[FORMAT_TIMESPAN_MAX];
2989
2990 printf("%s={ value=%s ; next_elapse=%s }\n",
2991 base,
2992 format_timespan(timespan1, sizeof(timespan1), value),
2993 format_timespan(timespan2, sizeof(timespan2), next_elapse));
2994 }
2995
2996 dbus_message_iter_next(&sub);
2997 }
2998
2999 return 0;
3000
3001 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "ControlGroupAttributes")) {
3002 DBusMessageIter sub, sub2;
3003
3004 dbus_message_iter_recurse(iter, &sub);
3005 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
3006 const char *controller, *attr, *value;
3007
3008 dbus_message_iter_recurse(&sub, &sub2);
3009
3010 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &controller, true) >= 0 &&
3011 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &attr, true) >= 0 &&
3012 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &value, false) >= 0) {
3013
3014 printf("ControlGroupAttribute={ controller=%s ; attribute=%s ; value=\"%s\" }\n",
3015 controller,
3016 attr,
3017 value);
3018 }
3019
3020 dbus_message_iter_next(&sub);
3021 }
3022
3023 return 0;
3024
3025 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && startswith(name, "Exec")) {
3026 DBusMessageIter sub;
3027
3028 dbus_message_iter_recurse(iter, &sub);
3029 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
3030 ExecStatusInfo info;
3031
3032 zero(info);
3033 if (exec_status_info_deserialize(&sub, &info) >= 0) {
3034 char timestamp1[FORMAT_TIMESTAMP_MAX], timestamp2[FORMAT_TIMESTAMP_MAX];
3035 char *t;
3036
3037 t = strv_join(info.argv, " ");
3038
3039 printf("%s={ path=%s ; argv[]=%s ; ignore_errors=%s ; start_time=[%s] ; stop_time=[%s] ; pid=%u ; code=%s ; status=%i%s%s }\n",
3040 name,
3041 strna(info.path),
3042 strna(t),
3043 yes_no(info.ignore),
3044 strna(format_timestamp(timestamp1, sizeof(timestamp1), info.start_timestamp)),
3045 strna(format_timestamp(timestamp2, sizeof(timestamp2), info.exit_timestamp)),
3046 (unsigned) info. pid,
3047 sigchld_code_to_string(info.code),
3048 info.status,
3049 info.code == CLD_EXITED ? "" : "/",
3050 strempty(info.code == CLD_EXITED ? NULL : signal_to_string(info.status)));
3051
3052 free(t);
3053 }
3054
3055 free(info.path);
3056 strv_free(info.argv);
3057
3058 dbus_message_iter_next(&sub);
3059 }
3060
3061 return 0;
3062 }
3063
3064 break;
3065 }
3066
3067 if (generic_print_property(name, iter, arg_all) > 0)
3068 return 0;
3069
3070 if (arg_all)
3071 printf("%s=[unprintable]\n", name);
3072
3073 return 0;
3074 }
3075
3076 static int show_one(const char *verb, DBusConnection *bus, const char *path, bool show_properties, bool *new_line) {
3077 DBusMessage *m = NULL, *reply = NULL;
3078 const char *interface = "";
3079 int r;
3080 DBusError error;
3081 DBusMessageIter iter, sub, sub2, sub3;
3082 UnitStatusInfo info;
3083 ExecStatusInfo *p;
3084
3085 assert(bus);
3086 assert(path);
3087 assert(new_line);
3088
3089 zero(info);
3090 dbus_error_init(&error);
3091
3092 if (!(m = dbus_message_new_method_call(
3093 "org.freedesktop.systemd1",
3094 path,
3095 "org.freedesktop.DBus.Properties",
3096 "GetAll"))) {
3097 log_error("Could not allocate message.");
3098 r = -ENOMEM;
3099 goto finish;
3100 }
3101
3102 if (!dbus_message_append_args(m,
3103 DBUS_TYPE_STRING, &interface,
3104 DBUS_TYPE_INVALID)) {
3105 log_error("Could not append arguments to message.");
3106 r = -ENOMEM;
3107 goto finish;
3108 }
3109
3110 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3111 log_error("Failed to issue method call: %s", bus_error_message(&error));
3112 r = -EIO;
3113 goto finish;
3114 }
3115
3116 if (!dbus_message_iter_init(reply, &iter) ||
3117 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
3118 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_DICT_ENTRY) {
3119 log_error("Failed to parse reply.");
3120 r = -EIO;
3121 goto finish;
3122 }
3123
3124 dbus_message_iter_recurse(&iter, &sub);
3125
3126 if (*new_line)
3127 printf("\n");
3128
3129 *new_line = true;
3130
3131 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
3132 const char *name;
3133
3134 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_DICT_ENTRY) {
3135 log_error("Failed to parse reply.");
3136 r = -EIO;
3137 goto finish;
3138 }
3139
3140 dbus_message_iter_recurse(&sub, &sub2);
3141
3142 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0) {
3143 log_error("Failed to parse reply.");
3144 r = -EIO;
3145 goto finish;
3146 }
3147
3148 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT) {
3149 log_error("Failed to parse reply.");
3150 r = -EIO;
3151 goto finish;
3152 }
3153
3154 dbus_message_iter_recurse(&sub2, &sub3);
3155
3156 if (show_properties)
3157 r = print_property(name, &sub3);
3158 else
3159 r = status_property(name, &sub3, &info);
3160
3161 if (r < 0) {
3162 log_error("Failed to parse reply.");
3163 r = -EIO;
3164 goto finish;
3165 }
3166
3167 dbus_message_iter_next(&sub);
3168 }
3169
3170 r = 0;
3171
3172 if (!show_properties) {
3173 if (streq(verb, "help"))
3174 show_unit_help(&info);
3175 else
3176 print_status_info(&info);
3177 }
3178
3179 strv_free(info.documentation);
3180
3181 if (!streq_ptr(info.active_state, "active") &&
3182 !streq_ptr(info.active_state, "reloading") &&
3183 streq(verb, "status"))
3184 /* According to LSB: "program not running" */
3185 r = 3;
3186
3187 while ((p = info.exec)) {
3188 LIST_REMOVE(ExecStatusInfo, exec, info.exec, p);
3189 exec_status_info_free(p);
3190 }
3191
3192 finish:
3193 if (m)
3194 dbus_message_unref(m);
3195
3196 if (reply)
3197 dbus_message_unref(reply);
3198
3199 dbus_error_free(&error);
3200
3201 return r;
3202 }
3203
3204 static int show_one_by_pid(const char *verb, DBusConnection *bus, uint32_t pid, bool *new_line) {
3205 DBusMessage *m = NULL, *reply = NULL;
3206 const char *path = NULL;
3207 DBusError error;
3208 int r;
3209
3210 dbus_error_init(&error);
3211
3212 m = dbus_message_new_method_call(
3213 "org.freedesktop.systemd1",
3214 "/org/freedesktop/systemd1",
3215 "org.freedesktop.systemd1.Manager",
3216 "GetUnitByPID");
3217 if (!m) {
3218 log_error("Could not allocate message.");
3219 r = -ENOMEM;
3220 goto finish;
3221 }
3222
3223 if (!dbus_message_append_args(m,
3224 DBUS_TYPE_UINT32, &pid,
3225 DBUS_TYPE_INVALID)) {
3226 log_error("Could not append arguments to message.");
3227 r = -ENOMEM;
3228 goto finish;
3229 }
3230
3231 reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
3232 if (!reply) {
3233 log_error("Failed to issue method call: %s", bus_error_message(&error));
3234 r = -EIO;
3235 goto finish;
3236 }
3237
3238 if (!dbus_message_get_args(reply, &error,
3239 DBUS_TYPE_OBJECT_PATH, &path,
3240 DBUS_TYPE_INVALID)) {
3241 log_error("Failed to parse reply: %s", bus_error_message(&error));
3242 r = -EIO;
3243 goto finish;
3244 }
3245
3246 r = show_one(verb, bus, path, false, new_line);
3247
3248 finish:
3249 if (m)
3250 dbus_message_unref(m);
3251
3252 if (reply)
3253 dbus_message_unref(reply);
3254
3255 dbus_error_free(&error);
3256
3257 return r;
3258 }
3259
3260 static int show(DBusConnection *bus, char **args) {
3261 int r, ret = 0;
3262 bool show_properties, new_line = false;
3263 char **name;
3264
3265 assert(bus);
3266 assert(args);
3267
3268 show_properties = streq(args[0], "show");
3269
3270 if (show_properties)
3271 pager_open_if_enabled();
3272
3273 if (show_properties && strv_length(args) <= 1) {
3274 /* If not argument is specified inspect the manager
3275 * itself */
3276
3277 return show_one(args[0], bus, "/org/freedesktop/systemd1", show_properties, &new_line);
3278 }
3279
3280 STRV_FOREACH(name, args+1) {
3281 uint32_t id;
3282
3283 if (safe_atou32(*name, &id) < 0) {
3284 char *p, *n;
3285 /* Interpret as unit name */
3286
3287 n = unit_name_mangle(*name);
3288 p = unit_dbus_path_from_name(n ? n : *name);
3289 free(n);
3290 if (!p) {
3291 log_error("Out of memory");
3292 return -ENOMEM;
3293 }
3294
3295 r = show_one(args[0], bus, p, show_properties, &new_line);
3296 free(p);
3297
3298 if (r != 0)
3299 ret = r;
3300
3301 } else if (show_properties) {
3302
3303 /* Interpret as job id */
3304
3305 char *p;
3306 if (asprintf(&p, "/org/freedesktop/systemd1/job/%u", id) < 0) {
3307 log_error("Out of memory");
3308 return -ENOMEM;
3309 }
3310
3311 r = show_one(args[0], bus, p, show_properties, &new_line);
3312 free(p);
3313
3314 if (r != 0)
3315 ret = r;
3316
3317 } else {
3318
3319 /* Interpret as PID */
3320
3321 r = show_one_by_pid(args[0], bus, id, &new_line);
3322 if (r != 0)
3323 ret = r;
3324 }
3325 }
3326
3327 return ret;
3328 }
3329
3330 static int dump(DBusConnection *bus, char **args) {
3331 DBusMessage *m = NULL, *reply = NULL;
3332 DBusError error;
3333 int r;
3334 const char *text;
3335
3336 dbus_error_init(&error);
3337
3338 pager_open_if_enabled();
3339
3340 if (!(m = dbus_message_new_method_call(
3341 "org.freedesktop.systemd1",
3342 "/org/freedesktop/systemd1",
3343 "org.freedesktop.systemd1.Manager",
3344 "Dump"))) {
3345 log_error("Could not allocate message.");
3346 return -ENOMEM;
3347 }
3348
3349 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3350 log_error("Failed to issue method call: %s", bus_error_message(&error));
3351 r = -EIO;
3352 goto finish;
3353 }
3354
3355 if (!dbus_message_get_args(reply, &error,
3356 DBUS_TYPE_STRING, &text,
3357 DBUS_TYPE_INVALID)) {
3358 log_error("Failed to parse reply: %s", bus_error_message(&error));
3359 r = -EIO;
3360 goto finish;
3361 }
3362
3363 fputs(text, stdout);
3364
3365 r = 0;
3366
3367 finish:
3368 if (m)
3369 dbus_message_unref(m);
3370
3371 if (reply)
3372 dbus_message_unref(reply);
3373
3374 dbus_error_free(&error);
3375
3376 return r;
3377 }
3378
3379 static int snapshot(DBusConnection *bus, char **args) {
3380 DBusMessage *m = NULL, *reply = NULL;
3381 DBusError error;
3382 int r;
3383 const char *name = "", *path, *id;
3384 dbus_bool_t cleanup = FALSE;
3385 DBusMessageIter iter, sub;
3386 const char
3387 *interface = "org.freedesktop.systemd1.Unit",
3388 *property = "Id";
3389 char *n;
3390 bool b;
3391
3392 dbus_error_init(&error);
3393
3394 m = dbus_message_new_method_call(
3395 "org.freedesktop.systemd1",
3396 "/org/freedesktop/systemd1",
3397 "org.freedesktop.systemd1.Manager",
3398 "CreateSnapshot");
3399 if (!m) {
3400 log_error("Could not allocate message.");
3401 return -ENOMEM;
3402 }
3403
3404 if (strv_length(args) > 1)
3405 name = args[1];
3406
3407 n = unit_name_mangle(name);
3408 b = dbus_message_append_args(m,
3409 DBUS_TYPE_STRING, n ? (const char**) &n : &name,
3410 DBUS_TYPE_BOOLEAN, &cleanup,
3411 DBUS_TYPE_INVALID);
3412 free(n);
3413 if (!b) {
3414 log_error("Could not append arguments to message.");
3415 r = -ENOMEM;
3416 goto finish;
3417 }
3418
3419 reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
3420 if (!reply) {
3421 log_error("Failed to issue method call: %s", bus_error_message(&error));
3422 r = -EIO;
3423 goto finish;
3424 }
3425
3426 if (!dbus_message_get_args(reply, &error,
3427 DBUS_TYPE_OBJECT_PATH, &path,
3428 DBUS_TYPE_INVALID)) {
3429 log_error("Failed to parse reply: %s", bus_error_message(&error));
3430 r = -EIO;
3431 goto finish;
3432 }
3433
3434 dbus_message_unref(m);
3435 m = dbus_message_new_method_call(
3436 "org.freedesktop.systemd1",
3437 path,
3438 "org.freedesktop.DBus.Properties",
3439 "Get");
3440 if (!m) {
3441 log_error("Could not allocate message.");
3442 return -ENOMEM;
3443 }
3444
3445 if (!dbus_message_append_args(m,
3446 DBUS_TYPE_STRING, &interface,
3447 DBUS_TYPE_STRING, &property,
3448 DBUS_TYPE_INVALID)) {
3449 log_error("Could not append arguments to message.");
3450 r = -ENOMEM;
3451 goto finish;
3452 }
3453
3454 dbus_message_unref(reply);
3455 reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
3456 if (!reply) {
3457 log_error("Failed to issue method call: %s", bus_error_message(&error));
3458 r = -EIO;
3459 goto finish;
3460 }
3461
3462 if (!dbus_message_iter_init(reply, &iter) ||
3463 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
3464 log_error("Failed to parse reply.");
3465 r = -EIO;
3466 goto finish;
3467 }
3468
3469 dbus_message_iter_recurse(&iter, &sub);
3470
3471 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
3472 log_error("Failed to parse reply.");
3473 r = -EIO;
3474 goto finish;
3475 }
3476
3477 dbus_message_iter_get_basic(&sub, &id);
3478
3479 if (!arg_quiet)
3480 puts(id);
3481 r = 0;
3482
3483 finish:
3484 if (m)
3485 dbus_message_unref(m);
3486
3487 if (reply)
3488 dbus_message_unref(reply);
3489
3490 dbus_error_free(&error);
3491
3492 return r;
3493 }
3494
3495 static int delete_snapshot(DBusConnection *bus, char **args) {
3496 DBusMessage *m = NULL, *reply = NULL;
3497 int r;
3498 DBusError error;
3499 char **name;
3500
3501 assert(bus);
3502 assert(args);
3503
3504 dbus_error_init(&error);
3505
3506 STRV_FOREACH(name, args+1) {
3507 const char *path = NULL;
3508 char *n;
3509 bool b;
3510
3511 m = dbus_message_new_method_call(
3512 "org.freedesktop.systemd1",
3513 "/org/freedesktop/systemd1",
3514 "org.freedesktop.systemd1.Manager",
3515 "GetUnit");
3516 if (!m) {
3517 log_error("Could not allocate message.");
3518 r = -ENOMEM;
3519 goto finish;
3520 }
3521
3522 n = unit_name_mangle(*name);
3523 b = dbus_message_append_args(m,
3524 DBUS_TYPE_STRING, n ? &n : name,
3525 DBUS_TYPE_INVALID);
3526 free(n);
3527 if (!b) {
3528 log_error("Could not append arguments to message.");
3529 r = -ENOMEM;
3530 goto finish;
3531 }
3532
3533 reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
3534 if (!reply) {
3535 log_error("Failed to issue method call: %s", bus_error_message(&error));
3536 r = -EIO;
3537 goto finish;
3538 }
3539
3540 if (!dbus_message_get_args(reply, &error,
3541 DBUS_TYPE_OBJECT_PATH, &path,
3542 DBUS_TYPE_INVALID)) {
3543 log_error("Failed to parse reply: %s", bus_error_message(&error));
3544 r = -EIO;
3545 goto finish;
3546 }
3547
3548 dbus_message_unref(m);
3549 m = dbus_message_new_method_call(
3550 "org.freedesktop.systemd1",
3551 path,
3552 "org.freedesktop.systemd1.Snapshot",
3553 "Remove");
3554 if (!m) {
3555 log_error("Could not allocate message.");
3556 r = -ENOMEM;
3557 goto finish;
3558 }
3559
3560 dbus_message_unref(reply);
3561 reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
3562 if (!reply) {
3563 log_error("Failed to issue method call: %s", bus_error_message(&error));
3564 r = -EIO;
3565 goto finish;
3566 }
3567
3568 dbus_message_unref(m);
3569 dbus_message_unref(reply);
3570 m = reply = NULL;
3571 }
3572
3573 r = 0;
3574
3575 finish:
3576 if (m)
3577 dbus_message_unref(m);
3578
3579 if (reply)
3580 dbus_message_unref(reply);
3581
3582 dbus_error_free(&error);
3583
3584 return r;
3585 }
3586
3587 static int daemon_reload(DBusConnection *bus, char **args) {
3588 DBusMessage *m = NULL, *reply = NULL;
3589 DBusError error;
3590 int r;
3591 const char *method;
3592
3593 dbus_error_init(&error);
3594
3595 if (arg_action == ACTION_RELOAD)
3596 method = "Reload";
3597 else if (arg_action == ACTION_REEXEC)
3598 method = "Reexecute";
3599 else {
3600 assert(arg_action == ACTION_SYSTEMCTL);
3601
3602 method =
3603 streq(args[0], "clear-jobs") ||
3604 streq(args[0], "cancel") ? "ClearJobs" :
3605 streq(args[0], "daemon-reexec") ? "Reexecute" :
3606 streq(args[0], "reset-failed") ? "ResetFailed" :
3607 streq(args[0], "halt") ? "Halt" :
3608 streq(args[0], "poweroff") ? "PowerOff" :
3609 streq(args[0], "reboot") ? "Reboot" :
3610 streq(args[0], "kexec") ? "KExec" :
3611 streq(args[0], "exit") ? "Exit" :
3612 /* "daemon-reload" */ "Reload";
3613 }
3614
3615 if (!(m = dbus_message_new_method_call(
3616 "org.freedesktop.systemd1",
3617 "/org/freedesktop/systemd1",
3618 "org.freedesktop.systemd1.Manager",
3619 method))) {
3620 log_error("Could not allocate message.");
3621 return -ENOMEM;
3622 }
3623
3624 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3625
3626 if (arg_action != ACTION_SYSTEMCTL && error_is_no_service(&error)) {
3627 /* There's always a fallback possible for
3628 * legacy actions. */
3629 r = -EADDRNOTAVAIL;
3630 goto finish;
3631 }
3632
3633 if (streq(method, "Reexecute") && dbus_error_has_name(&error, DBUS_ERROR_NO_REPLY)) {
3634 /* On reexecution, we expect a disconnect, not
3635 * a reply */
3636 r = 0;
3637 goto finish;
3638 }
3639
3640 log_error("Failed to issue method call: %s", bus_error_message(&error));
3641 r = -EIO;
3642 goto finish;
3643 }
3644
3645 r = 0;
3646
3647 finish:
3648 if (m)
3649 dbus_message_unref(m);
3650
3651 if (reply)
3652 dbus_message_unref(reply);
3653
3654 dbus_error_free(&error);
3655
3656 return r;
3657 }
3658
3659 static int reset_failed(DBusConnection *bus, char **args) {
3660 DBusMessage *m = NULL;
3661 int r;
3662 DBusError error;
3663 char **name;
3664
3665 assert(bus);
3666 dbus_error_init(&error);
3667
3668 if (strv_length(args) <= 1)
3669 return daemon_reload(bus, args);
3670
3671 STRV_FOREACH(name, args+1) {
3672 DBusMessage *reply;
3673 char *n;
3674 bool b;
3675
3676 m = dbus_message_new_method_call(
3677 "org.freedesktop.systemd1",
3678 "/org/freedesktop/systemd1",
3679 "org.freedesktop.systemd1.Manager",
3680 "ResetFailedUnit");
3681 if (!m) {
3682 log_error("Could not allocate message.");
3683 r = -ENOMEM;
3684 goto finish;
3685 }
3686
3687 n = unit_name_mangle(*name);
3688 b = dbus_message_append_args(m,
3689 DBUS_TYPE_STRING, n ? &n : name,
3690 DBUS_TYPE_INVALID);
3691 free(n);
3692 if (!b) {
3693 log_error("Could not append arguments to message.");
3694 r = -ENOMEM;
3695 goto finish;
3696 }
3697
3698 reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
3699 if (!reply) {
3700 log_error("Failed to issue method call: %s", bus_error_message(&error));
3701 r = -EIO;
3702 goto finish;
3703 }
3704
3705 dbus_message_unref(m);
3706 dbus_message_unref(reply);
3707 m = reply = NULL;
3708 }
3709
3710 r = 0;
3711
3712 finish:
3713 if (m)
3714 dbus_message_unref(m);
3715
3716 dbus_error_free(&error);
3717
3718 return r;
3719 }
3720
3721 static int show_enviroment(DBusConnection *bus, char **args) {
3722 DBusMessage *m = NULL, *reply = NULL;
3723 DBusError error;
3724 DBusMessageIter iter, sub, sub2;
3725 int r;
3726 const char
3727 *interface = "org.freedesktop.systemd1.Manager",
3728 *property = "Environment";
3729
3730 dbus_error_init(&error);
3731
3732 pager_open_if_enabled();
3733
3734 if (!(m = dbus_message_new_method_call(
3735 "org.freedesktop.systemd1",
3736 "/org/freedesktop/systemd1",
3737 "org.freedesktop.DBus.Properties",
3738 "Get"))) {
3739 log_error("Could not allocate message.");
3740 return -ENOMEM;
3741 }
3742
3743 if (!dbus_message_append_args(m,
3744 DBUS_TYPE_STRING, &interface,
3745 DBUS_TYPE_STRING, &property,
3746 DBUS_TYPE_INVALID)) {
3747 log_error("Could not append arguments to message.");
3748 r = -ENOMEM;
3749 goto finish;
3750 }
3751
3752 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3753 log_error("Failed to issue method call: %s", bus_error_message(&error));
3754 r = -EIO;
3755 goto finish;
3756 }
3757
3758 if (!dbus_message_iter_init(reply, &iter) ||
3759 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
3760 log_error("Failed to parse reply.");
3761 r = -EIO;
3762 goto finish;
3763 }
3764
3765 dbus_message_iter_recurse(&iter, &sub);
3766
3767 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_ARRAY ||
3768 dbus_message_iter_get_element_type(&sub) != DBUS_TYPE_STRING) {
3769 log_error("Failed to parse reply.");
3770 r = -EIO;
3771 goto finish;
3772 }
3773
3774 dbus_message_iter_recurse(&sub, &sub2);
3775
3776 while (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_INVALID) {
3777 const char *text;
3778
3779 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_STRING) {
3780 log_error("Failed to parse reply.");
3781 r = -EIO;
3782 goto finish;
3783 }
3784
3785 dbus_message_iter_get_basic(&sub2, &text);
3786 printf("%s\n", text);
3787
3788 dbus_message_iter_next(&sub2);
3789 }
3790
3791 r = 0;
3792
3793 finish:
3794 if (m)
3795 dbus_message_unref(m);
3796
3797 if (reply)
3798 dbus_message_unref(reply);
3799
3800 dbus_error_free(&error);
3801
3802 return r;
3803 }
3804
3805 static int switch_root(DBusConnection *bus, char **args) {
3806 DBusMessage *m = NULL, *reply = NULL;
3807 unsigned l;
3808 const char *root, *init;
3809 DBusError error;
3810 int r;
3811
3812 dbus_error_init(&error);
3813
3814 l = strv_length(args);
3815 if (l < 2 || l > 3) {
3816 log_error("Wrong number of arguments.");
3817 return -EINVAL;
3818 }
3819
3820 root = args[1];
3821 init = l >= 3 ? args[2] : "";
3822
3823 m = dbus_message_new_method_call(
3824 "org.freedesktop.systemd1",
3825 "/org/freedesktop/systemd1",
3826 "org.freedesktop.systemd1.Manager",
3827 "SwitchRoot");
3828 if (!m) {
3829 log_error("Could not allocate message.");
3830 return -ENOMEM;
3831 }
3832
3833 if (!dbus_message_append_args(
3834 m,
3835 DBUS_TYPE_STRING, &root,
3836 DBUS_TYPE_STRING, &init,
3837 DBUS_TYPE_INVALID)) {
3838 log_error("Could not append arguments to message.");
3839 r = -ENOMEM;
3840 goto finish;
3841 }
3842
3843 reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
3844 if (!reply) {
3845 log_error("Failed to issue method call: %s", bus_error_message(&error));
3846 r = -EIO;
3847 goto finish;
3848 }
3849
3850 r = 0;
3851
3852 finish:
3853 if (m)
3854 dbus_message_unref(m);
3855
3856 if (reply)
3857 dbus_message_unref(reply);
3858
3859 dbus_error_free(&error);
3860
3861 return r;
3862 }
3863
3864 static int set_environment(DBusConnection *bus, char **args) {
3865 DBusMessage *m = NULL, *reply = NULL;
3866 DBusError error;
3867 int r;
3868 const char *method;
3869 DBusMessageIter iter, sub;
3870 char **name;
3871
3872 dbus_error_init(&error);
3873
3874 method = streq(args[0], "set-environment")
3875 ? "SetEnvironment"
3876 : "UnsetEnvironment";
3877
3878 if (!(m = dbus_message_new_method_call(
3879 "org.freedesktop.systemd1",
3880 "/org/freedesktop/systemd1",
3881 "org.freedesktop.systemd1.Manager",
3882 method))) {
3883
3884 log_error("Could not allocate message.");
3885 return -ENOMEM;
3886 }
3887
3888 dbus_message_iter_init_append(m, &iter);
3889
3890 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "s", &sub)) {
3891 log_error("Could not append arguments to message.");
3892 r = -ENOMEM;
3893 goto finish;
3894 }
3895
3896 STRV_FOREACH(name, args+1)
3897 if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, name)) {
3898 log_error("Could not append arguments to message.");
3899 r = -ENOMEM;
3900 goto finish;
3901 }
3902
3903 if (!dbus_message_iter_close_container(&iter, &sub)) {
3904 log_error("Could not append arguments to message.");
3905 r = -ENOMEM;
3906 goto finish;
3907 }
3908
3909 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3910 log_error("Failed to issue method call: %s", bus_error_message(&error));
3911 r = -EIO;
3912 goto finish;
3913 }
3914
3915 r = 0;
3916
3917 finish:
3918 if (m)
3919 dbus_message_unref(m);
3920
3921 if (reply)
3922 dbus_message_unref(reply);
3923
3924 dbus_error_free(&error);
3925
3926 return r;
3927 }
3928
3929 static int enable_sysv_units(char **args) {
3930 int r = 0;
3931
3932 #if defined (HAVE_SYSV_COMPAT) && (defined(TARGET_FEDORA) || defined(TARGET_MANDRIVA) || defined(TARGET_SUSE) || defined(TARGET_ALTLINUX) || defined(TARGET_MAGEIA))
3933 const char *verb = args[0];
3934 unsigned f = 1, t = 1;
3935 LookupPaths paths;
3936
3937 if (arg_scope != UNIT_FILE_SYSTEM)
3938 return 0;
3939
3940 if (!streq(verb, "enable") &&
3941 !streq(verb, "disable") &&
3942 !streq(verb, "is-enabled"))
3943 return 0;
3944
3945 /* Processes all SysV units, and reshuffles the array so that
3946 * afterwards only the native units remain */
3947
3948 zero(paths);
3949 r = lookup_paths_init(&paths, MANAGER_SYSTEM, false, NULL, NULL, NULL);
3950 if (r < 0)
3951 return r;
3952
3953 r = 0;
3954 for (f = 1; args[f]; f++) {
3955 const char *name;
3956 char *p;
3957 bool found_native = false, found_sysv;
3958 unsigned c = 1;
3959 const char *argv[6] = { "/sbin/chkconfig", NULL, NULL, NULL, NULL };
3960 char **k, *l, *q = NULL;
3961 int j;
3962 pid_t pid;
3963 siginfo_t status;
3964
3965 name = args[f];
3966
3967 if (!endswith(name, ".service"))
3968 continue;
3969
3970 if (path_is_absolute(name))
3971 continue;
3972
3973 STRV_FOREACH(k, paths.unit_path) {
3974 p = NULL;
3975
3976 if (!isempty(arg_root))
3977 asprintf(&p, "%s/%s/%s", arg_root, *k, name);
3978 else
3979 asprintf(&p, "%s/%s", *k, name);
3980
3981 if (!p) {
3982 log_error("No memory");
3983 r = -ENOMEM;
3984 goto finish;
3985 }
3986
3987 found_native = access(p, F_OK) >= 0;
3988 free(p);
3989
3990 if (found_native)
3991 break;
3992 }
3993
3994 if (found_native)
3995 continue;
3996
3997 p = NULL;
3998 if (!isempty(arg_root))
3999 asprintf(&p, "%s/" SYSTEM_SYSVINIT_PATH "/%s", arg_root, name);
4000 else
4001 asprintf(&p, SYSTEM_SYSVINIT_PATH "/%s", name);
4002 if (!p) {
4003 log_error("No memory");
4004 r = -ENOMEM;
4005 goto finish;
4006 }
4007
4008 p[strlen(p) - sizeof(".service") + 1] = 0;
4009 found_sysv = access(p, F_OK) >= 0;
4010
4011 if (!found_sysv) {
4012 free(p);
4013 continue;
4014 }
4015
4016 /* Mark this entry, so that we don't try enabling it as native unit */
4017 args[f] = (char*) "";
4018
4019 log_info("%s is not a native service, redirecting to /sbin/chkconfig.", name);
4020
4021 if (!isempty(arg_root))
4022 argv[c++] = q = strappend("--root=", arg_root);
4023
4024 argv[c++] = path_get_file_name(p);
4025 argv[c++] =
4026 streq(verb, "enable") ? "on" :
4027 streq(verb, "disable") ? "off" : "--level=5";
4028 argv[c] = NULL;
4029
4030 l = strv_join((char**)argv, " ");
4031 if (!l) {
4032 log_error("No memory.");
4033 free(q);
4034 free(p);
4035 r = -ENOMEM;
4036 goto finish;
4037 }
4038
4039 log_info("Executing %s", l);
4040 free(l);
4041
4042 pid = fork();
4043 if (pid < 0) {
4044 log_error("Failed to fork: %m");
4045 free(p);
4046 free(q);
4047 r = -errno;
4048 goto finish;
4049 } else if (pid == 0) {
4050 /* Child */
4051
4052 execv(argv[0], (char**) argv);
4053 _exit(EXIT_FAILURE);
4054 }
4055
4056 free(p);
4057 free(q);
4058
4059 j = wait_for_terminate(pid, &status);
4060 if (j < 0) {
4061 log_error("Failed to wait for child: %s", strerror(-r));
4062 r = j;
4063 goto finish;
4064 }
4065
4066 if (status.si_code == CLD_EXITED) {
4067 if (streq(verb, "is-enabled")) {
4068 if (status.si_status == 0) {
4069 if (!arg_quiet)
4070 puts("enabled");
4071 r = 1;
4072 } else {
4073 if (!arg_quiet)
4074 puts("disabled");
4075 }
4076
4077 } else if (status.si_status != 0) {
4078 r = -EINVAL;
4079 goto finish;
4080 }
4081 } else {
4082 r = -EPROTO;
4083 goto finish;
4084 }
4085 }
4086
4087 finish:
4088 lookup_paths_free(&paths);
4089
4090 /* Drop all SysV units */
4091 for (f = 1, t = 1; args[f]; f++) {
4092
4093 if (isempty(args[f]))
4094 continue;
4095
4096 args[t++] = args[f];
4097 }
4098
4099 args[t] = NULL;
4100
4101 #endif
4102 return r;
4103 }
4104
4105 static int enable_unit(DBusConnection *bus, char **args) {
4106 const char *verb = args[0];
4107 UnitFileChange *changes = NULL;
4108 unsigned n_changes = 0, i;
4109 int carries_install_info = -1;
4110 DBusMessage *m = NULL, *reply = NULL;
4111 int r;
4112 DBusError error;
4113
4114 r = enable_sysv_units(args);
4115 if (r < 0)
4116 return r;
4117
4118 if (!args[1])
4119 return 0;
4120
4121 dbus_error_init(&error);
4122
4123 if (!bus || avoid_bus()) {
4124 if (streq(verb, "enable")) {
4125 r = unit_file_enable(arg_scope, arg_runtime, arg_root, args+1, arg_force, &changes, &n_changes);
4126 carries_install_info = r;
4127 } else if (streq(verb, "disable"))
4128 r = unit_file_disable(arg_scope, arg_runtime, arg_root, args+1, &changes, &n_changes);
4129 else if (streq(verb, "reenable")) {
4130 r = unit_file_reenable(arg_scope, arg_runtime, arg_root, args+1, arg_force, &changes, &n_changes);
4131 carries_install_info = r;
4132 } else if (streq(verb, "link"))
4133 r = unit_file_link(arg_scope, arg_runtime, arg_root, args+1, arg_force, &changes, &n_changes);
4134 else if (streq(verb, "preset")) {
4135 r = unit_file_preset(arg_scope, arg_runtime, arg_root, args+1, arg_force, &changes, &n_changes);
4136 carries_install_info = r;
4137 } else if (streq(verb, "mask"))
4138 r = unit_file_mask(arg_scope, arg_runtime, arg_root, args+1, arg_force, &changes, &n_changes);
4139 else if (streq(verb, "unmask"))
4140 r = unit_file_unmask(arg_scope, arg_runtime, arg_root, args+1, &changes, &n_changes);
4141 else
4142 assert_not_reached("Unknown verb");
4143
4144 if (r < 0) {
4145 log_error("Operation failed: %s", strerror(-r));
4146 goto finish;
4147 }
4148
4149 if (!arg_quiet) {
4150 for (i = 0; i < n_changes; i++) {
4151 if (changes[i].type == UNIT_FILE_SYMLINK)
4152 log_info("ln -s '%s' '%s'", changes[i].source, changes[i].path);
4153 else
4154 log_info("rm '%s'", changes[i].path);
4155 }
4156 }
4157
4158 } else {
4159 const char *method;
4160 bool send_force = true, expect_carries_install_info = false;
4161 dbus_bool_t a, b;
4162 DBusMessageIter iter, sub, sub2;
4163
4164 if (streq(verb, "enable")) {
4165 method = "EnableUnitFiles";
4166 expect_carries_install_info = true;
4167 } else if (streq(verb, "disable")) {
4168 method = "DisableUnitFiles";
4169 send_force = false;
4170 } else if (streq(verb, "reenable")) {
4171 method = "ReenableUnitFiles";
4172 expect_carries_install_info = true;
4173 } else if (streq(verb, "link"))
4174 method = "LinkUnitFiles";
4175 else if (streq(verb, "preset")) {
4176 method = "PresetUnitFiles";
4177 expect_carries_install_info = true;
4178 } else if (streq(verb, "mask"))
4179 method = "MaskUnitFiles";
4180 else if (streq(verb, "unmask")) {
4181 method = "UnmaskUnitFiles";
4182 send_force = false;
4183 } else
4184 assert_not_reached("Unknown verb");
4185
4186 m = dbus_message_new_method_call(
4187 "org.freedesktop.systemd1",
4188 "/org/freedesktop/systemd1",
4189 "org.freedesktop.systemd1.Manager",
4190 method);
4191 if (!m) {
4192 log_error("Out of memory");
4193 r = -ENOMEM;
4194 goto finish;
4195 }
4196
4197 dbus_message_iter_init_append(m, &iter);
4198
4199 r = bus_append_strv_iter(&iter, args+1);
4200 if (r < 0) {
4201 log_error("Failed to append unit files.");
4202 goto finish;
4203 }
4204
4205 a = arg_runtime;
4206 if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &a)) {
4207 log_error("Failed to append runtime boolean.");
4208 r = -ENOMEM;
4209 goto finish;
4210 }
4211
4212 if (send_force) {
4213 b = arg_force;
4214
4215 if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &b)) {
4216 log_error("Failed to append force boolean.");
4217 r = -ENOMEM;
4218 goto finish;
4219 }
4220 }
4221
4222 reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
4223 if (!reply) {
4224 log_error("Failed to issue method call: %s", bus_error_message(&error));
4225 r = -EIO;
4226 goto finish;
4227 }
4228
4229 if (!dbus_message_iter_init(reply, &iter)) {
4230 log_error("Failed to initialize iterator.");
4231 goto finish;
4232 }
4233
4234 if (expect_carries_install_info) {
4235 r = bus_iter_get_basic_and_next(&iter, DBUS_TYPE_BOOLEAN, &b, true);
4236 if (r < 0) {
4237 log_error("Failed to parse reply.");
4238 goto finish;
4239 }
4240
4241 carries_install_info = b;
4242 }
4243
4244 if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
4245 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
4246 log_error("Failed to parse reply.");
4247 r = -EIO;
4248 goto finish;
4249 }
4250
4251 dbus_message_iter_recurse(&iter, &sub);
4252 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
4253 const char *type, *path, *source;
4254
4255 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
4256 log_error("Failed to parse reply.");
4257 r = -EIO;
4258 goto finish;
4259 }
4260
4261 dbus_message_iter_recurse(&sub, &sub2);
4262
4263 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) < 0 ||
4264 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, true) < 0 ||
4265 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &source, false) < 0) {
4266 log_error("Failed to parse reply.");
4267 r = -EIO;
4268 goto finish;
4269 }
4270
4271 if (!arg_quiet) {
4272 if (streq(type, "symlink"))
4273 log_info("ln -s '%s' '%s'", source, path);
4274 else
4275 log_info("rm '%s'", path);
4276 }
4277
4278 dbus_message_iter_next(&sub);
4279 }
4280
4281 /* Try to reload if enabeld */
4282 if (!arg_no_reload)
4283 r = daemon_reload(bus, args);
4284 }
4285
4286 if (carries_install_info == 0)
4287 log_warning("The unit files have no [Install] section. They are not meant to be enabled using systemctl.");
4288
4289 finish:
4290 if (m)
4291 dbus_message_unref(m);
4292
4293 if (reply)
4294 dbus_message_unref(reply);
4295
4296 unit_file_changes_free(changes, n_changes);
4297
4298 dbus_error_free(&error);
4299 return r;
4300 }
4301
4302 static int unit_is_enabled(DBusConnection *bus, char **args) {
4303 DBusError error;
4304 int r;
4305 DBusMessage *m = NULL, *reply = NULL;
4306 bool enabled;
4307 char **name;
4308
4309 dbus_error_init(&error);
4310
4311 r = enable_sysv_units(args);
4312 if (r < 0)
4313 return r;
4314
4315 enabled = r > 0;
4316
4317 if (!bus || avoid_bus()) {
4318
4319 STRV_FOREACH(name, args+1) {
4320 UnitFileState state;
4321
4322 state = unit_file_get_state(arg_scope, arg_root, *name);
4323 if (state < 0) {
4324 r = state;
4325 goto finish;
4326 }
4327
4328 if (state == UNIT_FILE_ENABLED ||
4329 state == UNIT_FILE_ENABLED_RUNTIME ||
4330 state == UNIT_FILE_STATIC)
4331 enabled = true;
4332
4333 if (!arg_quiet)
4334 puts(unit_file_state_to_string(state));
4335 }
4336
4337 } else {
4338 STRV_FOREACH(name, args+1) {
4339 const char *s;
4340
4341 m = dbus_message_new_method_call(
4342 "org.freedesktop.systemd1",
4343 "/org/freedesktop/systemd1",
4344 "org.freedesktop.systemd1.Manager",
4345 "GetUnitFileState");
4346 if (!m) {
4347 log_error("Out of memory");
4348 r = -ENOMEM;
4349 goto finish;
4350 }
4351
4352 if (!dbus_message_append_args(m,
4353 DBUS_TYPE_STRING, name,
4354 DBUS_TYPE_INVALID)) {
4355 log_error("Could not append arguments to message.");
4356 r = -ENOMEM;
4357 goto finish;
4358 }
4359
4360 reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
4361 if (!reply) {
4362 log_error("Failed to issue method call: %s", bus_error_message(&error));
4363 r = -EIO;
4364 goto finish;
4365 }
4366
4367 if (!dbus_message_get_args(reply, &error,
4368 DBUS_TYPE_STRING, &s,
4369 DBUS_TYPE_INVALID)) {
4370 log_error("Failed to parse reply: %s", bus_error_message(&error));
4371 r = -EIO;
4372 goto finish;
4373 }
4374
4375 dbus_message_unref(m);
4376 dbus_message_unref(reply);
4377 m = reply = NULL;
4378
4379 if (streq(s, "enabled") ||
4380 streq(s, "enabled-runtime") ||
4381 streq(s, "static"))
4382 enabled = true;
4383
4384 if (!arg_quiet)
4385 puts(s);
4386 }
4387 }
4388
4389 r = enabled ? 0 : 1;
4390
4391 finish:
4392 if (m)
4393 dbus_message_unref(m);
4394
4395 if (reply)
4396 dbus_message_unref(reply);
4397
4398 dbus_error_free(&error);
4399 return r;
4400 }
4401
4402 static int systemctl_help(void) {
4403
4404 pager_open_if_enabled();
4405
4406 printf("%s [OPTIONS...] {COMMAND} ...\n\n"
4407 "Query or send control commands to the systemd manager.\n\n"
4408 " -h --help Show this help\n"
4409 " --version Show package version\n"
4410 " -t --type=TYPE List only units of a particular type\n"
4411 " -p --property=NAME Show only properties by this name\n"
4412 " -a --all Show all units/properties, including dead/empty ones\n"
4413 " --failed Show only failed units\n"
4414 " --full Don't ellipsize unit names on output\n"
4415 " --fail When queueing a new job, fail if conflicting jobs are\n"
4416 " pending\n"
4417 " --ignore-dependencies\n"
4418 " When queueing a new job, ignore all its dependencies\n"
4419 " --kill-who=WHO Who to send signal to\n"
4420 " -s --signal=SIGNAL Which signal to send\n"
4421 " -H --host=[USER@]HOST\n"
4422 " Show information for remote host\n"
4423 " -P --privileged Acquire privileges before execution\n"
4424 " -q --quiet Suppress output\n"
4425 " --no-block Do not wait until operation finished\n"
4426 " --no-wall Don't send wall message before halt/power-off/reboot\n"
4427 " --no-reload When enabling/disabling unit files, don't reload daemon\n"
4428 " configuration\n"
4429 " --no-legend Do not print a legend (column headers and hints)\n"
4430 " --no-pager Do not pipe output into a pager\n"
4431 " --no-ask-password\n"
4432 " Do not ask for system passwords\n"
4433 " --order When generating graph for dot, show only order\n"
4434 " --require When generating graph for dot, show only requirement\n"
4435 " --system Connect to system manager\n"
4436 " --user Connect to user service manager\n"
4437 " --global Enable/disable unit files globally\n"
4438 " -f --force When enabling unit files, override existing symlinks\n"
4439 " When shutting down, execute action immediately\n"
4440 " --root=PATH Enable unit files in the specified root directory\n"
4441 " --runtime Enable unit files only temporarily until next reboot\n"
4442 " -n --lines=INTEGER Journal entries to show\n"
4443 " --follow Follow journal\n"
4444 " -o --output=STRING Change journal output mode (short, short-monotonic,\n"
4445 " verbose, export, json, cat)\n\n"
4446 "Unit Commands:\n"
4447 " list-units List loaded units\n"
4448 " start [NAME...] Start (activate) one or more units\n"
4449 " stop [NAME...] Stop (deactivate) one or more units\n"
4450 " reload [NAME...] Reload one or more units\n"
4451 " restart [NAME...] Start or restart one or more units\n"
4452 " try-restart [NAME...] Restart one or more units if active\n"
4453 " reload-or-restart [NAME...] Reload one or more units is possible,\n"
4454 " otherwise start or restart\n"
4455 " reload-or-try-restart [NAME...] Reload one or more units is possible,\n"
4456 " otherwise restart if active\n"
4457 " isolate [NAME] Start one unit and stop all others\n"
4458 " kill [NAME...] Send signal to processes of a unit\n"
4459 " is-active [NAME...] Check whether units are active\n"
4460 " status [NAME...|PID...] Show runtime status of one or more units\n"
4461 " show [NAME...|JOB...] Show properties of one or more\n"
4462 " units/jobs or the manager\n"
4463 " help [NAME...|PID...] Show manual for one or more units\n"
4464 " reset-failed [NAME...] Reset failed state for all, one, or more\n"
4465 " units\n"
4466 " load [NAME...] Load one or more units\n\n"
4467 "Unit File Commands:\n"
4468 " list-unit-files List installed unit files\n"
4469 " enable [NAME...] Enable one or more unit files\n"
4470 " disable [NAME...] Disable one or more unit files\n"
4471 " reenable [NAME...] Reenable one or more unit files\n"
4472 " preset [NAME...] Enable/disable one or more unit files\n"
4473 " based on preset configuration\n"
4474 " mask [NAME...] Mask one or more units\n"
4475 " unmask [NAME...] Unmask one or more units\n"
4476 " link [PATH...] Link one or more units files into\n"
4477 " the search path\n"
4478 " is-enabled [NAME...] Check whether unit files are enabled\n\n"
4479 "Job Commands:\n"
4480 " list-jobs List jobs\n"
4481 " cancel [JOB...] Cancel all, one, or more jobs\n\n"
4482 "Status Commands:\n"
4483 " dump Dump server status\n"
4484 " dot Dump dependency graph for dot(1)\n\n"
4485 "Snapshot Commands:\n"
4486 " snapshot [NAME] Create a snapshot\n"
4487 " delete [NAME...] Remove one or more snapshots\n\n"
4488 "Environment Commands:\n"
4489 " show-environment Dump environment\n"
4490 " set-environment [NAME=VALUE...] Set one or more environment variables\n"
4491 " unset-environment [NAME...] Unset one or more environment variables\n\n"
4492 "Manager Lifecycle Commands:\n"
4493 " daemon-reload Reload systemd manager configuration\n"
4494 " daemon-reexec Reexecute systemd manager\n\n"
4495 "System Commands:\n"
4496 " default Enter system default mode\n"
4497 " rescue Enter system rescue mode\n"
4498 " emergency Enter system emergency mode\n"
4499 " halt Shut down and halt the system\n"
4500 " poweroff Shut down and power-off the system\n"
4501 " reboot Shut down and reboot the system\n"
4502 " kexec Shut down and reboot the system with kexec\n"
4503 " exit Request user instance exit\n"
4504 " switch-root [ROOT] [INIT] Change to a different root file system\n"
4505 " suspend Suspend the system\n"
4506 " hibernate Hibernate the system\n",
4507 program_invocation_short_name);
4508
4509 return 0;
4510 }
4511
4512 static int halt_help(void) {
4513
4514 printf("%s [OPTIONS...]\n\n"
4515 "%s the system.\n\n"
4516 " --help Show this help\n"
4517 " --halt Halt the machine\n"
4518 " -p --poweroff Switch off the machine\n"
4519 " --reboot Reboot the machine\n"
4520 " -f --force Force immediate halt/power-off/reboot\n"
4521 " -w --wtmp-only Don't halt/power-off/reboot, just write wtmp record\n"
4522 " -d --no-wtmp Don't write wtmp record\n"
4523 " -n --no-sync Don't sync before halt/power-off/reboot\n"
4524 " --no-wall Don't send wall message before halt/power-off/reboot\n",
4525 program_invocation_short_name,
4526 arg_action == ACTION_REBOOT ? "Reboot" :
4527 arg_action == ACTION_POWEROFF ? "Power off" :
4528 "Halt");
4529
4530 return 0;
4531 }
4532
4533 static int shutdown_help(void) {
4534
4535 printf("%s [OPTIONS...] [TIME] [WALL...]\n\n"
4536 "Shut down the system.\n\n"
4537 " --help Show this help\n"
4538 " -H --halt Halt the machine\n"
4539 " -P --poweroff Power-off the machine\n"
4540 " -r --reboot Reboot the machine\n"
4541 " -h Equivalent to --poweroff, overridden by --halt\n"
4542 " -k Don't halt/power-off/reboot, just send warnings\n"
4543 " --no-wall Don't send wall message before halt/power-off/reboot\n"
4544 " -c Cancel a pending shutdown\n",
4545 program_invocation_short_name);
4546
4547 return 0;
4548 }
4549
4550 static int telinit_help(void) {
4551
4552 printf("%s [OPTIONS...] {COMMAND}\n\n"
4553 "Send control commands to the init daemon.\n\n"
4554 " --help Show this help\n"
4555 " --no-wall Don't send wall message before halt/power-off/reboot\n\n"
4556 "Commands:\n"
4557 " 0 Power-off the machine\n"
4558 " 6 Reboot the machine\n"
4559 " 2, 3, 4, 5 Start runlevelX.target unit\n"
4560 " 1, s, S Enter rescue mode\n"
4561 " q, Q Reload init daemon configuration\n"
4562 " u, U Reexecute init daemon\n",
4563 program_invocation_short_name);
4564
4565 return 0;
4566 }
4567
4568 static int runlevel_help(void) {
4569
4570 printf("%s [OPTIONS...]\n\n"
4571 "Prints the previous and current runlevel of the init system.\n\n"
4572 " --help Show this help\n",
4573 program_invocation_short_name);
4574
4575 return 0;
4576 }
4577
4578 static int systemctl_parse_argv(int argc, char *argv[]) {
4579
4580 enum {
4581 ARG_FAIL = 0x100,
4582 ARG_IGNORE_DEPENDENCIES,
4583 ARG_VERSION,
4584 ARG_USER,
4585 ARG_SYSTEM,
4586 ARG_GLOBAL,
4587 ARG_NO_BLOCK,
4588 ARG_NO_LEGEND,
4589 ARG_NO_PAGER,
4590 ARG_NO_WALL,
4591 ARG_ORDER,
4592 ARG_REQUIRE,
4593 ARG_ROOT,
4594 ARG_FULL,
4595 ARG_NO_RELOAD,
4596 ARG_KILL_MODE,
4597 ARG_KILL_WHO,
4598 ARG_NO_ASK_PASSWORD,
4599 ARG_FAILED,
4600 ARG_RUNTIME,
4601 ARG_FOLLOW,
4602 ARG_FORCE
4603 };
4604
4605 static const struct option options[] = {
4606 { "help", no_argument, NULL, 'h' },
4607 { "version", no_argument, NULL, ARG_VERSION },
4608 { "type", required_argument, NULL, 't' },
4609 { "property", required_argument, NULL, 'p' },
4610 { "all", no_argument, NULL, 'a' },
4611 { "failed", no_argument, NULL, ARG_FAILED },
4612 { "full", no_argument, NULL, ARG_FULL },
4613 { "fail", no_argument, NULL, ARG_FAIL },
4614 { "ignore-dependencies", no_argument, NULL, ARG_IGNORE_DEPENDENCIES },
4615 { "user", no_argument, NULL, ARG_USER },
4616 { "system", no_argument, NULL, ARG_SYSTEM },
4617 { "global", no_argument, NULL, ARG_GLOBAL },
4618 { "no-block", no_argument, NULL, ARG_NO_BLOCK },
4619 { "no-legend", no_argument, NULL, ARG_NO_LEGEND },
4620 { "no-pager", no_argument, NULL, ARG_NO_PAGER },
4621 { "no-wall", no_argument, NULL, ARG_NO_WALL },
4622 { "quiet", no_argument, NULL, 'q' },
4623 { "order", no_argument, NULL, ARG_ORDER },
4624 { "require", no_argument, NULL, ARG_REQUIRE },
4625 { "root", required_argument, NULL, ARG_ROOT },
4626 { "force", no_argument, NULL, ARG_FORCE },
4627 { "no-reload", no_argument, NULL, ARG_NO_RELOAD },
4628 { "kill-mode", required_argument, NULL, ARG_KILL_MODE }, /* undocumented on purpose */
4629 { "kill-who", required_argument, NULL, ARG_KILL_WHO },
4630 { "signal", required_argument, NULL, 's' },
4631 { "no-ask-password", no_argument, NULL, ARG_NO_ASK_PASSWORD },
4632 { "host", required_argument, NULL, 'H' },
4633 { "privileged",no_argument, NULL, 'P' },
4634 { "runtime", no_argument, NULL, ARG_RUNTIME },
4635 { "lines", required_argument, NULL, 'n' },
4636 { "follow", no_argument, NULL, ARG_FOLLOW },
4637 { "output", required_argument, NULL, 'o' },
4638 { NULL, 0, NULL, 0 }
4639 };
4640
4641 int c;
4642
4643 assert(argc >= 0);
4644 assert(argv);
4645
4646 while ((c = getopt_long(argc, argv, "ht:p:aqfs:H:Pn:o:", options, NULL)) >= 0) {
4647
4648 switch (c) {
4649
4650 case 'h':
4651 systemctl_help();
4652 return 0;
4653
4654 case ARG_VERSION:
4655 puts(PACKAGE_STRING);
4656 puts(DISTRIBUTION);
4657 puts(SYSTEMD_FEATURES);
4658 return 0;
4659
4660 case 't':
4661 if (unit_type_from_string(optarg) >= 0) {
4662 arg_type = optarg;
4663 break;
4664 }
4665 if (unit_load_state_from_string(optarg) >= 0) {
4666 arg_load_state = optarg;
4667 break;
4668 }
4669 log_error("Unkown unit type or load state '%s'.",
4670 optarg);
4671 return -EINVAL;
4672 case 'p': {
4673 char **l;
4674
4675 if (!(l = strv_append(arg_property, optarg)))
4676 return -ENOMEM;
4677
4678 strv_free(arg_property);
4679 arg_property = l;
4680
4681 /* If the user asked for a particular
4682 * property, show it to him, even if it is
4683 * empty. */
4684 arg_all = true;
4685 break;
4686 }
4687
4688 case 'a':
4689 arg_all = true;
4690 break;
4691
4692 case ARG_FAIL:
4693 arg_job_mode = "fail";
4694 break;
4695
4696 case ARG_IGNORE_DEPENDENCIES:
4697 arg_job_mode = "ignore-dependencies";
4698 break;
4699
4700 case ARG_USER:
4701 arg_scope = UNIT_FILE_USER;
4702 break;
4703
4704 case ARG_SYSTEM:
4705 arg_scope = UNIT_FILE_SYSTEM;
4706 break;
4707
4708 case ARG_GLOBAL:
4709 arg_scope = UNIT_FILE_GLOBAL;
4710 break;
4711
4712 case ARG_NO_BLOCK:
4713 arg_no_block = true;
4714 break;
4715
4716 case ARG_NO_LEGEND:
4717 arg_no_legend = true;
4718 break;
4719
4720 case ARG_NO_PAGER:
4721 arg_no_pager = true;
4722 break;
4723
4724 case ARG_NO_WALL:
4725 arg_no_wall = true;
4726 break;
4727
4728 case ARG_ORDER:
4729 arg_dot = DOT_ORDER;
4730 break;
4731
4732 case ARG_REQUIRE:
4733 arg_dot = DOT_REQUIRE;
4734 break;
4735
4736 case ARG_ROOT:
4737 arg_root = optarg;
4738 break;
4739
4740 case ARG_FULL:
4741 arg_full = true;
4742 break;
4743
4744 case ARG_FAILED:
4745 arg_failed = true;
4746 break;
4747
4748 case 'q':
4749 arg_quiet = true;
4750 break;
4751
4752 case ARG_FORCE:
4753 arg_force ++;
4754 break;
4755
4756 case ARG_FOLLOW:
4757 arg_follow = true;
4758 break;
4759
4760 case 'f':
4761 /* -f is short for both --follow and --force! */
4762 arg_force ++;
4763 arg_follow = true;
4764 break;
4765
4766 case ARG_NO_RELOAD:
4767 arg_no_reload = true;
4768 break;
4769
4770 case ARG_KILL_WHO:
4771 arg_kill_who = optarg;
4772 break;
4773
4774 case ARG_KILL_MODE:
4775 arg_kill_mode = optarg;
4776 break;
4777
4778 case 's':
4779 if ((arg_signal = signal_from_string_try_harder(optarg)) < 0) {
4780 log_error("Failed to parse signal string %s.", optarg);
4781 return -EINVAL;
4782 }
4783 break;
4784
4785 case ARG_NO_ASK_PASSWORD:
4786 arg_ask_password = false;
4787 break;
4788
4789 case 'P':
4790 arg_transport = TRANSPORT_POLKIT;
4791 break;
4792
4793 case 'H':
4794 arg_transport = TRANSPORT_SSH;
4795 arg_host = optarg;
4796 break;
4797
4798 case ARG_RUNTIME:
4799 arg_runtime = true;
4800 break;
4801
4802 case 'n':
4803 if (safe_atou(optarg, &arg_lines) < 0) {
4804 log_error("Failed to parse lines '%s'", optarg);
4805 return -EINVAL;
4806 }
4807 break;
4808
4809 case 'o':
4810 arg_output = output_mode_from_string(optarg);
4811 if (arg_output < 0) {
4812 log_error("Unknown output '%s'.", optarg);
4813 return -EINVAL;
4814 }
4815 break;
4816
4817 case '?':
4818 return -EINVAL;
4819
4820 default:
4821 log_error("Unknown option code '%c'.", c);
4822 return -EINVAL;
4823 }
4824 }
4825
4826 if (arg_transport != TRANSPORT_NORMAL && arg_scope != UNIT_FILE_SYSTEM) {
4827 log_error("Cannot access user instance remotely.");
4828 return -EINVAL;
4829 }
4830
4831 return 1;
4832 }
4833
4834 static int halt_parse_argv(int argc, char *argv[]) {
4835
4836 enum {
4837 ARG_HELP = 0x100,
4838 ARG_HALT,
4839 ARG_REBOOT,
4840 ARG_NO_WALL
4841 };
4842
4843 static const struct option options[] = {
4844 { "help", no_argument, NULL, ARG_HELP },
4845 { "halt", no_argument, NULL, ARG_HALT },
4846 { "poweroff", no_argument, NULL, 'p' },
4847 { "reboot", no_argument, NULL, ARG_REBOOT },
4848 { "force", no_argument, NULL, 'f' },
4849 { "wtmp-only", no_argument, NULL, 'w' },
4850 { "no-wtmp", no_argument, NULL, 'd' },
4851 { "no-sync", no_argument, NULL, 'n' },
4852 { "no-wall", no_argument, NULL, ARG_NO_WALL },
4853 { NULL, 0, NULL, 0 }
4854 };
4855
4856 int c, runlevel;
4857
4858 assert(argc >= 0);
4859 assert(argv);
4860
4861 if (utmp_get_runlevel(&runlevel, NULL) >= 0)
4862 if (runlevel == '0' || runlevel == '6')
4863 arg_force = 2;
4864
4865 while ((c = getopt_long(argc, argv, "pfwdnih", options, NULL)) >= 0) {
4866 switch (c) {
4867
4868 case ARG_HELP:
4869 halt_help();
4870 return 0;
4871
4872 case ARG_HALT:
4873 arg_action = ACTION_HALT;
4874 break;
4875
4876 case 'p':
4877 if (arg_action != ACTION_REBOOT)
4878 arg_action = ACTION_POWEROFF;
4879 break;
4880
4881 case ARG_REBOOT:
4882 arg_action = ACTION_REBOOT;
4883 break;
4884
4885 case 'f':
4886 arg_force = 2;
4887 break;
4888
4889 case 'w':
4890 arg_dry = true;
4891 break;
4892
4893 case 'd':
4894 arg_no_wtmp = true;
4895 break;
4896
4897 case 'n':
4898 arg_no_sync = true;
4899 break;
4900
4901 case ARG_NO_WALL:
4902 arg_no_wall = true;
4903 break;
4904
4905 case 'i':
4906 case 'h':
4907 /* Compatibility nops */
4908 break;
4909
4910 case '?':
4911 return -EINVAL;
4912
4913 default:
4914 log_error("Unknown option code '%c'.", c);
4915 return -EINVAL;
4916 }
4917 }
4918
4919 if (optind < argc) {
4920 log_error("Too many arguments.");
4921 return -EINVAL;
4922 }
4923
4924 return 1;
4925 }
4926
4927 static int parse_time_spec(const char *t, usec_t *_u) {
4928 assert(t);
4929 assert(_u);
4930
4931 if (streq(t, "now"))
4932 *_u = 0;
4933 else if (!strchr(t, ':')) {
4934 uint64_t u;
4935
4936 if (safe_atou64(t, &u) < 0)
4937 return -EINVAL;
4938
4939 *_u = now(CLOCK_REALTIME) + USEC_PER_MINUTE * u;
4940 } else {
4941 char *e = NULL;
4942 long hour, minute;
4943 struct tm tm;
4944 time_t s;
4945 usec_t n;
4946
4947 errno = 0;
4948 hour = strtol(t, &e, 10);
4949 if (errno != 0 || *e != ':' || hour < 0 || hour > 23)
4950 return -EINVAL;
4951
4952 minute = strtol(e+1, &e, 10);
4953 if (errno != 0 || *e != 0 || minute < 0 || minute > 59)
4954 return -EINVAL;
4955
4956 n = now(CLOCK_REALTIME);
4957 s = (time_t) (n / USEC_PER_SEC);
4958
4959 zero(tm);
4960 assert_se(localtime_r(&s, &tm));
4961
4962 tm.tm_hour = (int) hour;
4963 tm.tm_min = (int) minute;
4964 tm.tm_sec = 0;
4965
4966 assert_se(s = mktime(&tm));
4967
4968 *_u = (usec_t) s * USEC_PER_SEC;
4969
4970 while (*_u <= n)
4971 *_u += USEC_PER_DAY;
4972 }
4973
4974 return 0;
4975 }
4976
4977 static int shutdown_parse_argv(int argc, char *argv[]) {
4978
4979 enum {
4980 ARG_HELP = 0x100,
4981 ARG_NO_WALL
4982 };
4983
4984 static const struct option options[] = {
4985 { "help", no_argument, NULL, ARG_HELP },
4986 { "halt", no_argument, NULL, 'H' },
4987 { "poweroff", no_argument, NULL, 'P' },
4988 { "reboot", no_argument, NULL, 'r' },
4989 { "kexec", no_argument, NULL, 'K' }, /* not documented extension */
4990 { "no-wall", no_argument, NULL, ARG_NO_WALL },
4991 { NULL, 0, NULL, 0 }
4992 };
4993
4994 int c, r;
4995
4996 assert(argc >= 0);
4997 assert(argv);
4998
4999 while ((c = getopt_long(argc, argv, "HPrhkt:afFc", options, NULL)) >= 0) {
5000 switch (c) {
5001
5002 case ARG_HELP:
5003 shutdown_help();
5004 return 0;
5005
5006 case 'H':
5007 arg_action = ACTION_HALT;
5008 break;
5009
5010 case 'P':
5011 arg_action = ACTION_POWEROFF;
5012 break;
5013
5014 case 'r':
5015 if (kexec_loaded())
5016 arg_action = ACTION_KEXEC;
5017 else
5018 arg_action = ACTION_REBOOT;
5019 break;
5020
5021 case 'K':
5022 arg_action = ACTION_KEXEC;
5023 break;
5024
5025 case 'h':
5026 if (arg_action != ACTION_HALT)
5027 arg_action = ACTION_POWEROFF;
5028 break;
5029
5030 case 'k':
5031 arg_dry = true;
5032 break;
5033
5034 case ARG_NO_WALL:
5035 arg_no_wall = true;
5036 break;
5037
5038 case 't':
5039 case 'a':
5040 /* Compatibility nops */
5041 break;
5042
5043 case 'c':
5044 arg_action = ACTION_CANCEL_SHUTDOWN;
5045 break;
5046
5047 case '?':
5048 return -EINVAL;
5049
5050 default:
5051 log_error("Unknown option code '%c'.", c);
5052 return -EINVAL;
5053 }
5054 }
5055
5056 if (argc > optind) {
5057 r = parse_time_spec(argv[optind], &arg_when);
5058 if (r < 0) {
5059 log_error("Failed to parse time specification: %s", argv[optind]);
5060 return r;
5061 }
5062 } else
5063 arg_when = now(CLOCK_REALTIME) + USEC_PER_MINUTE;
5064
5065 /* We skip the time argument */
5066 if (argc > optind + 1)
5067 arg_wall = argv + optind + 1;
5068
5069 optind = argc;
5070
5071 return 1;
5072 }
5073
5074 static int telinit_parse_argv(int argc, char *argv[]) {
5075
5076 enum {
5077 ARG_HELP = 0x100,
5078 ARG_NO_WALL
5079 };
5080
5081 static const struct option options[] = {
5082 { "help", no_argument, NULL, ARG_HELP },
5083 { "no-wall", no_argument, NULL, ARG_NO_WALL },
5084 { NULL, 0, NULL, 0 }
5085 };
5086
5087 static const struct {
5088 char from;
5089 enum action to;
5090 } table[] = {
5091 { '0', ACTION_POWEROFF },
5092 { '6', ACTION_REBOOT },
5093 { '1', ACTION_RESCUE },
5094 { '2', ACTION_RUNLEVEL2 },
5095 { '3', ACTION_RUNLEVEL3 },
5096 { '4', ACTION_RUNLEVEL4 },
5097 { '5', ACTION_RUNLEVEL5 },
5098 { 's', ACTION_RESCUE },
5099 { 'S', ACTION_RESCUE },
5100 { 'q', ACTION_RELOAD },
5101 { 'Q', ACTION_RELOAD },
5102 { 'u', ACTION_REEXEC },
5103 { 'U', ACTION_REEXEC }
5104 };
5105
5106 unsigned i;
5107 int c;
5108
5109 assert(argc >= 0);
5110 assert(argv);
5111
5112 while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) {
5113 switch (c) {
5114
5115 case ARG_HELP:
5116 telinit_help();
5117 return 0;
5118
5119 case ARG_NO_WALL:
5120 arg_no_wall = true;
5121 break;
5122
5123 case '?':
5124 return -EINVAL;
5125
5126 default:
5127 log_error("Unknown option code '%c'.", c);
5128 return -EINVAL;
5129 }
5130 }
5131
5132 if (optind >= argc) {
5133 telinit_help();
5134 return -EINVAL;
5135 }
5136
5137 if (optind + 1 < argc) {
5138 log_error("Too many arguments.");
5139 return -EINVAL;
5140 }
5141
5142 if (strlen(argv[optind]) != 1) {
5143 log_error("Expected single character argument.");
5144 return -EINVAL;
5145 }
5146
5147 for (i = 0; i < ELEMENTSOF(table); i++)
5148 if (table[i].from == argv[optind][0])
5149 break;
5150
5151 if (i >= ELEMENTSOF(table)) {
5152 log_error("Unknown command '%s'.", argv[optind]);
5153 return -EINVAL;
5154 }
5155
5156 arg_action = table[i].to;
5157
5158 optind ++;
5159
5160 return 1;
5161 }
5162
5163 static int runlevel_parse_argv(int argc, char *argv[]) {
5164
5165 enum {
5166 ARG_HELP = 0x100,
5167 };
5168
5169 static const struct option options[] = {
5170 { "help", no_argument, NULL, ARG_HELP },
5171 { NULL, 0, NULL, 0 }
5172 };
5173
5174 int c;
5175
5176 assert(argc >= 0);
5177 assert(argv);
5178
5179 while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) {
5180 switch (c) {
5181
5182 case ARG_HELP:
5183 runlevel_help();
5184 return 0;
5185
5186 case '?':
5187 return -EINVAL;
5188
5189 default:
5190 log_error("Unknown option code '%c'.", c);
5191 return -EINVAL;
5192 }
5193 }
5194
5195 if (optind < argc) {
5196 log_error("Too many arguments.");
5197 return -EINVAL;
5198 }
5199
5200 return 1;
5201 }
5202
5203 static int parse_argv(int argc, char *argv[]) {
5204 assert(argc >= 0);
5205 assert(argv);
5206
5207 if (program_invocation_short_name) {
5208
5209 if (strstr(program_invocation_short_name, "halt")) {
5210 arg_action = ACTION_HALT;
5211 return halt_parse_argv(argc, argv);
5212 } else if (strstr(program_invocation_short_name, "poweroff")) {
5213 arg_action = ACTION_POWEROFF;
5214 return halt_parse_argv(argc, argv);
5215 } else if (strstr(program_invocation_short_name, "reboot")) {
5216 if (kexec_loaded())
5217 arg_action = ACTION_KEXEC;
5218 else
5219 arg_action = ACTION_REBOOT;
5220 return halt_parse_argv(argc, argv);
5221 } else if (strstr(program_invocation_short_name, "shutdown")) {
5222 arg_action = ACTION_POWEROFF;
5223 return shutdown_parse_argv(argc, argv);
5224 } else if (strstr(program_invocation_short_name, "init")) {
5225
5226 if (sd_booted() > 0) {
5227 arg_action = ACTION_INVALID;
5228 return telinit_parse_argv(argc, argv);
5229 } else {
5230 /* Hmm, so some other init system is
5231 * running, we need to forward this
5232 * request to it. For now we simply
5233 * guess that it is Upstart. */
5234
5235 execv("/lib/upstart/telinit", argv);
5236
5237 log_error("Couldn't find an alternative telinit implementation to spawn.");
5238 return -EIO;
5239 }
5240
5241 } else if (strstr(program_invocation_short_name, "runlevel")) {
5242 arg_action = ACTION_RUNLEVEL;
5243 return runlevel_parse_argv(argc, argv);
5244 }
5245 }
5246
5247 arg_action = ACTION_SYSTEMCTL;
5248 return systemctl_parse_argv(argc, argv);
5249 }
5250
5251 static int action_to_runlevel(void) {
5252
5253 static const char table[_ACTION_MAX] = {
5254 [ACTION_HALT] = '0',
5255 [ACTION_POWEROFF] = '0',
5256 [ACTION_REBOOT] = '6',
5257 [ACTION_RUNLEVEL2] = '2',
5258 [ACTION_RUNLEVEL3] = '3',
5259 [ACTION_RUNLEVEL4] = '4',
5260 [ACTION_RUNLEVEL5] = '5',
5261 [ACTION_RESCUE] = '1'
5262 };
5263
5264 assert(arg_action < _ACTION_MAX);
5265
5266 return table[arg_action];
5267 }
5268
5269 static int talk_upstart(void) {
5270 DBusMessage *m = NULL, *reply = NULL;
5271 DBusError error;
5272 int previous, rl, r;
5273 char
5274 env1_buf[] = "RUNLEVEL=X",
5275 env2_buf[] = "PREVLEVEL=X";
5276 char *env1 = env1_buf, *env2 = env2_buf;
5277 const char *emit = "runlevel";
5278 dbus_bool_t b_false = FALSE;
5279 DBusMessageIter iter, sub;
5280 DBusConnection *bus;
5281
5282 dbus_error_init(&error);
5283
5284 if (!(rl = action_to_runlevel()))
5285 return 0;
5286
5287 if (utmp_get_runlevel(&previous, NULL) < 0)
5288 previous = 'N';
5289
5290 if (!(bus = dbus_connection_open_private("unix:abstract=/com/ubuntu/upstart", &error))) {
5291 if (dbus_error_has_name(&error, DBUS_ERROR_NO_SERVER)) {
5292 r = 0;
5293 goto finish;
5294 }
5295
5296 log_error("Failed to connect to Upstart bus: %s", bus_error_message(&error));
5297 r = -EIO;
5298 goto finish;
5299 }
5300
5301 if ((r = bus_check_peercred(bus)) < 0) {
5302 log_error("Failed to verify owner of bus.");
5303 goto finish;
5304 }
5305
5306 if (!(m = dbus_message_new_method_call(
5307 "com.ubuntu.Upstart",
5308 "/com/ubuntu/Upstart",
5309 "com.ubuntu.Upstart0_6",
5310 "EmitEvent"))) {
5311
5312 log_error("Could not allocate message.");
5313 r = -ENOMEM;
5314 goto finish;
5315 }
5316
5317 dbus_message_iter_init_append(m, &iter);
5318
5319 env1_buf[sizeof(env1_buf)-2] = rl;
5320 env2_buf[sizeof(env2_buf)-2] = previous;
5321
5322 if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &emit) ||
5323 !dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "s", &sub) ||
5324 !dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &env1) ||
5325 !dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &env2) ||
5326 !dbus_message_iter_close_container(&iter, &sub) ||
5327 !dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &b_false)) {
5328 log_error("Could not append arguments to message.");
5329 r = -ENOMEM;
5330 goto finish;
5331 }
5332
5333 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
5334
5335 if (error_is_no_service(&error)) {
5336 r = -EADDRNOTAVAIL;
5337 goto finish;
5338 }
5339
5340 log_error("Failed to issue method call: %s", bus_error_message(&error));
5341 r = -EIO;
5342 goto finish;
5343 }
5344
5345 r = 1;
5346
5347 finish:
5348 if (m)
5349 dbus_message_unref(m);
5350
5351 if (reply)
5352 dbus_message_unref(reply);
5353
5354 if (bus) {
5355 dbus_connection_flush(bus);
5356 dbus_connection_close(bus);
5357 dbus_connection_unref(bus);
5358 }
5359
5360 dbus_error_free(&error);
5361
5362 return r;
5363 }
5364
5365 static int talk_initctl(void) {
5366 struct init_request request;
5367 int r, fd;
5368 char rl;
5369
5370 if (!(rl = action_to_runlevel()))
5371 return 0;
5372
5373 zero(request);
5374 request.magic = INIT_MAGIC;
5375 request.sleeptime = 0;
5376 request.cmd = INIT_CMD_RUNLVL;
5377 request.runlevel = rl;
5378
5379 if ((fd = open(INIT_FIFO, O_WRONLY|O_NDELAY|O_CLOEXEC|O_NOCTTY)) < 0) {
5380
5381 if (errno == ENOENT)
5382 return 0;
5383
5384 log_error("Failed to open "INIT_FIFO": %m");
5385 return -errno;
5386 }
5387
5388 errno = 0;
5389 r = loop_write(fd, &request, sizeof(request), false) != sizeof(request);
5390 close_nointr_nofail(fd);
5391
5392 if (r < 0) {
5393 log_error("Failed to write to "INIT_FIFO": %m");
5394 return errno ? -errno : -EIO;
5395 }
5396
5397 return 1;
5398 }
5399
5400 static int systemctl_main(DBusConnection *bus, int argc, char *argv[], DBusError *error) {
5401
5402 static const struct {
5403 const char* verb;
5404 const enum {
5405 MORE,
5406 LESS,
5407 EQUAL
5408 } argc_cmp;
5409 const int argc;
5410 int (* const dispatch)(DBusConnection *bus, char **args);
5411 } verbs[] = {
5412 { "list-units", LESS, 1, list_units },
5413 { "list-unit-files", EQUAL, 1, list_unit_files },
5414 { "list-jobs", EQUAL, 1, list_jobs },
5415 { "clear-jobs", EQUAL, 1, daemon_reload },
5416 { "load", MORE, 2, load_unit },
5417 { "cancel", MORE, 2, cancel_job },
5418 { "start", MORE, 2, start_unit },
5419 { "stop", MORE, 2, start_unit },
5420 { "condstop", MORE, 2, start_unit }, /* For compatibility with ALTLinux */
5421 { "reload", MORE, 2, start_unit },
5422 { "restart", MORE, 2, start_unit },
5423 { "try-restart", MORE, 2, start_unit },
5424 { "reload-or-restart", MORE, 2, start_unit },
5425 { "reload-or-try-restart", MORE, 2, start_unit },
5426 { "force-reload", MORE, 2, start_unit }, /* For compatibility with SysV */
5427 { "condreload", MORE, 2, start_unit }, /* For compatibility with ALTLinux */
5428 { "condrestart", MORE, 2, start_unit }, /* For compatibility with RH */
5429 { "isolate", EQUAL, 2, start_unit },
5430 { "kill", MORE, 2, kill_unit },
5431 { "is-active", MORE, 2, check_unit },
5432 { "check", MORE, 2, check_unit },
5433 { "show", MORE, 1, show },
5434 { "status", MORE, 2, show },
5435 { "help", MORE, 2, show },
5436 { "dump", EQUAL, 1, dump },
5437 { "dot", EQUAL, 1, dot },
5438 { "snapshot", LESS, 2, snapshot },
5439 { "delete", MORE, 2, delete_snapshot },
5440 { "daemon-reload", EQUAL, 1, daemon_reload },
5441 { "daemon-reexec", EQUAL, 1, daemon_reload },
5442 { "show-environment", EQUAL, 1, show_enviroment },
5443 { "set-environment", MORE, 2, set_environment },
5444 { "unset-environment", MORE, 2, set_environment },
5445 { "halt", EQUAL, 1, start_special },
5446 { "poweroff", EQUAL, 1, start_special },
5447 { "reboot", EQUAL, 1, start_special },
5448 { "kexec", EQUAL, 1, start_special },
5449 { "suspend", EQUAL, 1, start_special },
5450 { "hibernate", EQUAL, 1, start_special },
5451 { "default", EQUAL, 1, start_special },
5452 { "rescue", EQUAL, 1, start_special },
5453 { "emergency", EQUAL, 1, start_special },
5454 { "exit", EQUAL, 1, start_special },
5455 { "reset-failed", MORE, 1, reset_failed },
5456 { "enable", MORE, 2, enable_unit },
5457 { "disable", MORE, 2, enable_unit },
5458 { "is-enabled", MORE, 2, unit_is_enabled },
5459 { "reenable", MORE, 2, enable_unit },
5460 { "preset", MORE, 2, enable_unit },
5461 { "mask", MORE, 2, enable_unit },
5462 { "unmask", MORE, 2, enable_unit },
5463 { "link", MORE, 2, enable_unit },
5464 { "switch-root", MORE, 2, switch_root },
5465 };
5466
5467 int left;
5468 unsigned i;
5469
5470 assert(argc >= 0);
5471 assert(argv);
5472 assert(error);
5473
5474 left = argc - optind;
5475
5476 if (left <= 0)
5477 /* Special rule: no arguments means "list-units" */
5478 i = 0;
5479 else {
5480 if (streq(argv[optind], "help") && !argv[optind+1]) {
5481 log_error("This command expects one or more "
5482 "unit names. Did you mean --help?");
5483 return -EINVAL;
5484 }
5485
5486 for (i = 0; i < ELEMENTSOF(verbs); i++)
5487 if (streq(argv[optind], verbs[i].verb))
5488 break;
5489
5490 if (i >= ELEMENTSOF(verbs)) {
5491 log_error("Unknown operation '%s'.", argv[optind]);
5492 return -EINVAL;
5493 }
5494 }
5495
5496 switch (verbs[i].argc_cmp) {
5497
5498 case EQUAL:
5499 if (left != verbs[i].argc) {
5500 log_error("Invalid number of arguments.");
5501 return -EINVAL;
5502 }
5503
5504 break;
5505
5506 case MORE:
5507 if (left < verbs[i].argc) {
5508 log_error("Too few arguments.");
5509 return -EINVAL;
5510 }
5511
5512 break;
5513
5514 case LESS:
5515 if (left > verbs[i].argc) {
5516 log_error("Too many arguments.");
5517 return -EINVAL;
5518 }
5519
5520 break;
5521
5522 default:
5523 assert_not_reached("Unknown comparison operator.");
5524 }
5525
5526 /* Require a bus connection for all operations but
5527 * enable/disable */
5528 if (!streq(verbs[i].verb, "enable") &&
5529 !streq(verbs[i].verb, "disable") &&
5530 !streq(verbs[i].verb, "is-enabled") &&
5531 !streq(verbs[i].verb, "list-unit-files") &&
5532 !streq(verbs[i].verb, "reenable") &&
5533 !streq(verbs[i].verb, "preset") &&
5534 !streq(verbs[i].verb, "mask") &&
5535 !streq(verbs[i].verb, "unmask") &&
5536 !streq(verbs[i].verb, "link")) {
5537
5538 if (running_in_chroot() > 0) {
5539 log_info("Running in chroot, ignoring request.");
5540 return 0;
5541 }
5542
5543 if (((!streq(verbs[i].verb, "reboot") &&
5544 !streq(verbs[i].verb, "halt") &&
5545 !streq(verbs[i].verb, "poweroff")) || arg_force <= 0) && !bus) {
5546 log_error("Failed to get D-Bus connection: %s",
5547 dbus_error_is_set(error) ? error->message : "No connection to service manager.");
5548 return -EIO;
5549 }
5550
5551 } else {
5552
5553 if (!bus && !avoid_bus()) {
5554 log_error("Failed to get D-Bus connection: %s",
5555 dbus_error_is_set(error) ? error->message : "No connection to service manager.");
5556 return -EIO;
5557 }
5558 }
5559
5560 return verbs[i].dispatch(bus, argv + optind);
5561 }
5562
5563 static int send_shutdownd(usec_t t, char mode, bool dry_run, bool warn, const char *message) {
5564 int fd;
5565 struct msghdr msghdr;
5566 struct iovec iovec[2];
5567 union sockaddr_union sockaddr;
5568 struct sd_shutdown_command c;
5569
5570 fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0);
5571 if (fd < 0)
5572 return -errno;
5573
5574 zero(c);
5575 c.usec = t;
5576 c.mode = mode;
5577 c.dry_run = dry_run;
5578 c.warn_wall = warn;
5579
5580 zero(sockaddr);
5581 sockaddr.sa.sa_family = AF_UNIX;
5582 strncpy(sockaddr.un.sun_path, "/run/systemd/shutdownd", sizeof(sockaddr.un.sun_path));
5583
5584 zero(msghdr);
5585 msghdr.msg_name = &sockaddr;
5586 msghdr.msg_namelen = offsetof(struct sockaddr_un, sun_path) + sizeof("/run/systemd/shutdownd") - 1;
5587
5588 zero(iovec);
5589 iovec[0].iov_base = (char*) &c;
5590 iovec[0].iov_len = offsetof(struct sd_shutdown_command, wall_message);
5591
5592 if (isempty(message))
5593 msghdr.msg_iovlen = 1;
5594 else {
5595 iovec[1].iov_base = (char*) message;
5596 iovec[1].iov_len = strlen(message);
5597 msghdr.msg_iovlen = 2;
5598 }
5599 msghdr.msg_iov = iovec;
5600
5601 if (sendmsg(fd, &msghdr, MSG_NOSIGNAL) < 0) {
5602 close_nointr_nofail(fd);
5603 return -errno;
5604 }
5605
5606 close_nointr_nofail(fd);
5607 return 0;
5608 }
5609
5610 static int reload_with_fallback(DBusConnection *bus) {
5611
5612 if (bus) {
5613 /* First, try systemd via D-Bus. */
5614 if (daemon_reload(bus, NULL) >= 0)
5615 return 0;
5616 }
5617
5618 /* Nothing else worked, so let's try signals */
5619 assert(arg_action == ACTION_RELOAD || arg_action == ACTION_REEXEC);
5620
5621 if (kill(1, arg_action == ACTION_RELOAD ? SIGHUP : SIGTERM) < 0) {
5622 log_error("kill() failed: %m");
5623 return -errno;
5624 }
5625
5626 return 0;
5627 }
5628
5629 static int start_with_fallback(DBusConnection *bus) {
5630
5631 if (bus) {
5632 /* First, try systemd via D-Bus. */
5633 if (start_unit(bus, NULL) >= 0)
5634 goto done;
5635 }
5636
5637 /* Hmm, talking to systemd via D-Bus didn't work. Then
5638 * let's try to talk to Upstart via D-Bus. */
5639 if (talk_upstart() > 0)
5640 goto done;
5641
5642 /* Nothing else worked, so let's try
5643 * /dev/initctl */
5644 if (talk_initctl() > 0)
5645 goto done;
5646
5647 log_error("Failed to talk to init daemon.");
5648 return -EIO;
5649
5650 done:
5651 warn_wall(arg_action);
5652 return 0;
5653 }
5654
5655 static void halt_now(enum action a) {
5656
5657 /* Make sure C-A-D is handled by the kernel from this
5658 * point on... */
5659 reboot(RB_ENABLE_CAD);
5660
5661 switch (a) {
5662
5663 case ACTION_HALT:
5664 log_info("Halting.");
5665 reboot(RB_HALT_SYSTEM);
5666 break;
5667
5668 case ACTION_POWEROFF:
5669 log_info("Powering off.");
5670 reboot(RB_POWER_OFF);
5671 break;
5672
5673 case ACTION_REBOOT:
5674 log_info("Rebooting.");
5675 reboot(RB_AUTOBOOT);
5676 break;
5677
5678 default:
5679 assert_not_reached("Unknown halt action.");
5680 }
5681
5682 assert_not_reached("Uh? This shouldn't happen.");
5683 }
5684
5685 static int halt_main(DBusConnection *bus) {
5686 int r;
5687
5688 if (geteuid() != 0) {
5689 /* Try logind if we are a normal user and no special
5690 * mode applies. Maybe PolicyKit allows us to shutdown
5691 * the machine. */
5692
5693 if (arg_when <= 0 &&
5694 !arg_dry &&
5695 !arg_force &&
5696 (arg_action == ACTION_POWEROFF ||
5697 arg_action == ACTION_REBOOT)) {
5698 r = reboot_with_logind(bus, arg_action);
5699 if (r >= 0)
5700 return r;
5701 }
5702
5703 log_error("Must be root.");
5704 return -EPERM;
5705 }
5706
5707 if (arg_when > 0) {
5708 char *m;
5709
5710 m = strv_join(arg_wall, " ");
5711 r = send_shutdownd(arg_when,
5712 arg_action == ACTION_HALT ? 'H' :
5713 arg_action == ACTION_POWEROFF ? 'P' :
5714 arg_action == ACTION_KEXEC ? 'K' :
5715 'r',
5716 arg_dry,
5717 !arg_no_wall,
5718 m);
5719 free(m);
5720
5721 if (r < 0)
5722 log_warning("Failed to talk to shutdownd, proceeding with immediate shutdown: %s", strerror(-r));
5723 else {
5724 char date[FORMAT_TIMESTAMP_MAX];
5725
5726 log_info("Shutdown scheduled for %s, use 'shutdown -c' to cancel.",
5727 format_timestamp(date, sizeof(date), arg_when));
5728 return 0;
5729 }
5730 }
5731
5732 if (!arg_dry && !arg_force)
5733 return start_with_fallback(bus);
5734
5735 if (!arg_no_wtmp) {
5736 if (sd_booted() > 0)
5737 log_debug("Not writing utmp record, assuming that systemd-update-utmp is used.");
5738 else {
5739 r = utmp_put_shutdown();
5740 if (r < 0)
5741 log_warning("Failed to write utmp record: %s", strerror(-r));
5742 }
5743 }
5744
5745 if (!arg_no_sync)
5746 sync();
5747
5748 if (arg_dry)
5749 return 0;
5750
5751 halt_now(arg_action);
5752 /* We should never reach this. */
5753 return -ENOSYS;
5754 }
5755
5756 static int runlevel_main(void) {
5757 int r, runlevel, previous;
5758
5759 r = utmp_get_runlevel(&runlevel, &previous);
5760 if (r < 0) {
5761 puts("unknown");
5762 return r;
5763 }
5764
5765 printf("%c %c\n",
5766 previous <= 0 ? 'N' : previous,
5767 runlevel <= 0 ? 'N' : runlevel);
5768
5769 return 0;
5770 }
5771
5772 int main(int argc, char*argv[]) {
5773 int r, retval = EXIT_FAILURE;
5774 DBusConnection *bus = NULL;
5775 DBusError error;
5776
5777 dbus_error_init(&error);
5778
5779 log_parse_environment();
5780 log_open();
5781
5782 r = parse_argv(argc, argv);
5783 if (r < 0)
5784 goto finish;
5785 else if (r == 0) {
5786 retval = EXIT_SUCCESS;
5787 goto finish;
5788 }
5789
5790 /* /sbin/runlevel doesn't need to communicate via D-Bus, so
5791 * let's shortcut this */
5792 if (arg_action == ACTION_RUNLEVEL) {
5793 r = runlevel_main();
5794 retval = r < 0 ? EXIT_FAILURE : r;
5795 goto finish;
5796 }
5797
5798 if (running_in_chroot() > 0 && arg_action != ACTION_SYSTEMCTL) {
5799 log_info("Running in chroot, ignoring request.");
5800 retval = 0;
5801 goto finish;
5802 }
5803
5804 if (!avoid_bus()) {
5805 if (arg_transport == TRANSPORT_NORMAL)
5806 bus_connect(arg_scope == UNIT_FILE_SYSTEM ? DBUS_BUS_SYSTEM : DBUS_BUS_SESSION, &bus, &private_bus, &error);
5807 else if (arg_transport == TRANSPORT_POLKIT) {
5808 bus_connect_system_polkit(&bus, &error);
5809 private_bus = false;
5810 } else if (arg_transport == TRANSPORT_SSH) {
5811 bus_connect_system_ssh(NULL, arg_host, &bus, &error);
5812 private_bus = false;
5813 } else
5814 assert_not_reached("Uh, invalid transport...");
5815 }
5816
5817 switch (arg_action) {
5818
5819 case ACTION_SYSTEMCTL:
5820 r = systemctl_main(bus, argc, argv, &error);
5821 break;
5822
5823 case ACTION_HALT:
5824 case ACTION_POWEROFF:
5825 case ACTION_REBOOT:
5826 case ACTION_KEXEC:
5827 r = halt_main(bus);
5828 break;
5829
5830 case ACTION_RUNLEVEL2:
5831 case ACTION_RUNLEVEL3:
5832 case ACTION_RUNLEVEL4:
5833 case ACTION_RUNLEVEL5:
5834 case ACTION_RESCUE:
5835 case ACTION_EMERGENCY:
5836 case ACTION_DEFAULT:
5837 r = start_with_fallback(bus);
5838 break;
5839
5840 case ACTION_RELOAD:
5841 case ACTION_REEXEC:
5842 r = reload_with_fallback(bus);
5843 break;
5844
5845 case ACTION_CANCEL_SHUTDOWN:
5846 r = send_shutdownd(0, 0, false, false, NULL);
5847 break;
5848
5849 case ACTION_INVALID:
5850 case ACTION_RUNLEVEL:
5851 default:
5852 assert_not_reached("Unknown action");
5853 }
5854
5855 retval = r < 0 ? EXIT_FAILURE : r;
5856
5857 finish:
5858 if (bus) {
5859 dbus_connection_flush(bus);
5860 dbus_connection_close(bus);
5861 dbus_connection_unref(bus);
5862 }
5863
5864 dbus_error_free(&error);
5865
5866 dbus_shutdown();
5867
5868 strv_free(arg_property);
5869
5870 pager_close();
5871 ask_password_agent_close();
5872 polkit_agent_close();
5873
5874 return retval;
5875 }
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