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1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
2
3 /***
4 This file is part of systemd.
5
6 Copyright 2010 Lennart Poettering
7
8 systemd is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
12
13 systemd is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with systemd; If not, see <http://www.gnu.org/licenses/>.
20 ***/
21
22 #include <sys/reboot.h>
23 #include <stdio.h>
24 #include <getopt.h>
25 #include <stdbool.h>
26 #include <string.h>
27 #include <errno.h>
28 #include <sys/ioctl.h>
29 #include <termios.h>
30 #include <unistd.h>
31 #include <fcntl.h>
32 #include <sys/socket.h>
33 #include <sys/stat.h>
34 #include <stddef.h>
35 #include <sys/prctl.h>
36
37 #include <dbus/dbus.h>
38
39 #include "log.h"
40 #include "util.h"
41 #include "macro.h"
42 #include "set.h"
43 #include "utmp-wtmp.h"
44 #include "special.h"
45 #include "initreq.h"
46 #include "strv.h"
47 #include "dbus-common.h"
48 #include "cgroup-show.h"
49 #include "cgroup-util.h"
50 #include "list.h"
51 #include "path-lookup.h"
52 #include "conf-parser.h"
53 #include "sd-daemon.h"
54 #include "shutdownd.h"
55 #include "exit-status.h"
56 #include "bus-errors.h"
57 #include "build.h"
58 #include "unit-name.h"
59
60 static const char *arg_type = NULL;
61 static char **arg_property = NULL;
62 static bool arg_all = false;
63 static const char *arg_job_mode = "replace";
64 static bool arg_user = false;
65 static bool arg_global = false;
66 static bool arg_immediate = false;
67 static bool arg_no_block = false;
68 static bool arg_no_pager = false;
69 static bool arg_no_wtmp = false;
70 static bool arg_no_sync = false;
71 static bool arg_no_wall = false;
72 static bool arg_no_reload = false;
73 static bool arg_dry = false;
74 static bool arg_quiet = false;
75 static bool arg_full = false;
76 static bool arg_force = false;
77 static bool arg_defaults = false;
78 static bool arg_ask_password = false;
79 static bool arg_failed = false;
80 static char **arg_wall = NULL;
81 static const char *arg_kill_who = NULL;
82 static const char *arg_kill_mode = NULL;
83 static int arg_signal = SIGTERM;
84 static usec_t arg_when = 0;
85 static enum action {
86 ACTION_INVALID,
87 ACTION_SYSTEMCTL,
88 ACTION_HALT,
89 ACTION_POWEROFF,
90 ACTION_REBOOT,
91 ACTION_KEXEC,
92 ACTION_EXIT,
93 ACTION_RUNLEVEL2,
94 ACTION_RUNLEVEL3,
95 ACTION_RUNLEVEL4,
96 ACTION_RUNLEVEL5,
97 ACTION_RESCUE,
98 ACTION_EMERGENCY,
99 ACTION_DEFAULT,
100 ACTION_RELOAD,
101 ACTION_REEXEC,
102 ACTION_RUNLEVEL,
103 ACTION_CANCEL_SHUTDOWN,
104 _ACTION_MAX
105 } arg_action = ACTION_SYSTEMCTL;
106 static enum dot {
107 DOT_ALL,
108 DOT_ORDER,
109 DOT_REQUIRE
110 } arg_dot = DOT_ALL;
111
112 static bool private_bus = false;
113
114 static pid_t pager_pid = 0;
115 static pid_t agent_pid = 0;
116
117 static int daemon_reload(DBusConnection *bus, char **args, unsigned n);
118 static void pager_open(void);
119
120 static bool on_tty(void) {
121 static int t = -1;
122
123 /* Note that this is invoked relatively early, before we start
124 * the pager. That means the value we return reflects whether
125 * we originally were started on a tty, not if we currently
126 * are. But this is intended, since we want colour and so on
127 * when run in our own pager. */
128
129 if (_unlikely_(t < 0))
130 t = isatty(STDOUT_FILENO) > 0;
131
132 return t;
133 }
134
135 static void spawn_ask_password_agent(void) {
136 pid_t parent;
137
138 if (agent_pid > 0)
139 return;
140
141 /* We check STDIN here, not STDOUT, since this is about input,
142 * not output */
143 if (!isatty(STDIN_FILENO))
144 return;
145
146 if (!arg_ask_password)
147 return;
148
149 if (arg_user)
150 return;
151
152 parent = getpid();
153
154 /* Spawns a temporary TTY agent, making sure it goes away when
155 * we go away */
156
157 if ((agent_pid = fork()) < 0)
158 return;
159
160 if (agent_pid == 0) {
161 /* In the child */
162
163 int fd;
164 bool stdout_is_tty, stderr_is_tty;
165
166 /* Make sure the agent goes away when the parent dies */
167 if (prctl(PR_SET_PDEATHSIG, SIGTERM) < 0)
168 _exit(EXIT_FAILURE);
169
170 /* Check whether our parent died before we were able
171 * to set the death signal */
172 if (getppid() != parent)
173 _exit(EXIT_SUCCESS);
174
175 /* Don't leak fds to the agent */
176 close_all_fds(NULL, 0);
177
178 stdout_is_tty = isatty(STDOUT_FILENO);
179 stderr_is_tty = isatty(STDERR_FILENO);
180
181 if (!stdout_is_tty || !stderr_is_tty) {
182 /* Detach from stdout/stderr. and reopen
183 * /dev/tty for them. This is important to
184 * ensure that when systemctl is started via
185 * popen() or a similar call that expects to
186 * read EOF we actually do generate EOF and
187 * not delay this indefinitely by because we
188 * keep an unused copy of stdin around. */
189 if ((fd = open("/dev/tty", O_WRONLY)) < 0) {
190 log_error("Failed to open /dev/tty: %m");
191 _exit(EXIT_FAILURE);
192 }
193
194 if (!stdout_is_tty)
195 dup2(fd, STDOUT_FILENO);
196
197 if (!stderr_is_tty)
198 dup2(fd, STDERR_FILENO);
199
200 if (fd > 2)
201 close(fd);
202 }
203
204 execl(SYSTEMD_TTY_ASK_PASSWORD_AGENT_BINARY_PATH, SYSTEMD_TTY_ASK_PASSWORD_AGENT_BINARY_PATH, "--watch", NULL);
205
206 log_error("Unable to execute agent: %m");
207 _exit(EXIT_FAILURE);
208 }
209 }
210
211 static const char *ansi_highlight(bool b) {
212
213 if (!on_tty())
214 return "";
215
216 return b ? ANSI_HIGHLIGHT_ON : ANSI_HIGHLIGHT_OFF;
217 }
218
219 static const char *ansi_highlight_green(bool b) {
220
221 if (!on_tty())
222 return "";
223
224 return b ? ANSI_HIGHLIGHT_GREEN_ON : ANSI_HIGHLIGHT_OFF;
225 }
226
227 static bool error_is_no_service(const DBusError *error) {
228 assert(error);
229
230 if (!dbus_error_is_set(error))
231 return false;
232
233 if (dbus_error_has_name(error, DBUS_ERROR_NAME_HAS_NO_OWNER))
234 return true;
235
236 if (dbus_error_has_name(error, DBUS_ERROR_SERVICE_UNKNOWN))
237 return true;
238
239 return startswith(error->name, "org.freedesktop.DBus.Error.Spawn.");
240 }
241
242 static int translate_bus_error_to_exit_status(int r, const DBusError *error) {
243 assert(error);
244
245 if (!dbus_error_is_set(error))
246 return r;
247
248 if (dbus_error_has_name(error, DBUS_ERROR_ACCESS_DENIED) ||
249 dbus_error_has_name(error, BUS_ERROR_ONLY_BY_DEPENDENCY) ||
250 dbus_error_has_name(error, BUS_ERROR_NO_ISOLATION) ||
251 dbus_error_has_name(error, BUS_ERROR_TRANSACTION_IS_DESTRUCTIVE))
252 return EXIT_NOPERMISSION;
253
254 if (dbus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT))
255 return EXIT_NOTINSTALLED;
256
257 if (dbus_error_has_name(error, BUS_ERROR_JOB_TYPE_NOT_APPLICABLE) ||
258 dbus_error_has_name(error, BUS_ERROR_NOT_SUPPORTED))
259 return EXIT_NOTIMPLEMENTED;
260
261 if (dbus_error_has_name(error, BUS_ERROR_LOAD_FAILED))
262 return EXIT_NOTCONFIGURED;
263
264 if (r != 0)
265 return r;
266
267 return EXIT_FAILURE;
268 }
269
270 static int bus_iter_get_basic_and_next(DBusMessageIter *iter, int type, void *data, bool next) {
271
272 assert(iter);
273 assert(data);
274
275 if (dbus_message_iter_get_arg_type(iter) != type)
276 return -EIO;
277
278 dbus_message_iter_get_basic(iter, data);
279
280 if (!dbus_message_iter_next(iter) != !next)
281 return -EIO;
282
283 return 0;
284 }
285
286 static void warn_wall(enum action action) {
287 static const char *table[_ACTION_MAX] = {
288 [ACTION_HALT] = "The system is going down for system halt NOW!",
289 [ACTION_REBOOT] = "The system is going down for reboot NOW!",
290 [ACTION_POWEROFF] = "The system is going down for power-off NOW!",
291 [ACTION_KEXEC] = "The system is going down for kexec reboot NOW!",
292 [ACTION_RESCUE] = "The system is going down to rescue mode NOW!",
293 [ACTION_EMERGENCY] = "The system is going down to emergency mode NOW!"
294 };
295
296 if (arg_no_wall)
297 return;
298
299 if (arg_wall) {
300 char *p;
301
302 if (!(p = strv_join(arg_wall, " "))) {
303 log_error("Failed to join strings.");
304 return;
305 }
306
307 if (*p) {
308 utmp_wall(p, NULL);
309 free(p);
310 return;
311 }
312
313 free(p);
314 }
315
316 if (!table[action])
317 return;
318
319 utmp_wall(table[action], NULL);
320 }
321
322 struct unit_info {
323 const char *id;
324 const char *description;
325 const char *load_state;
326 const char *active_state;
327 const char *sub_state;
328 const char *following;
329 const char *unit_path;
330 uint32_t job_id;
331 const char *job_type;
332 const char *job_path;
333 };
334
335 static int compare_unit_info(const void *a, const void *b) {
336 const char *d1, *d2;
337 const struct unit_info *u = a, *v = b;
338
339 d1 = strrchr(u->id, '.');
340 d2 = strrchr(v->id, '.');
341
342 if (d1 && d2) {
343 int r;
344
345 if ((r = strcasecmp(d1, d2)) != 0)
346 return r;
347 }
348
349 return strcasecmp(u->id, v->id);
350 }
351
352 static bool output_show_unit(const struct unit_info *u) {
353 const char *dot;
354
355 if (arg_failed)
356 return streq(u->active_state, "failed");
357
358 return (!arg_type || ((dot = strrchr(u->id, '.')) &&
359 streq(dot+1, arg_type))) &&
360 (arg_all || !(streq(u->active_state, "inactive") || u->following[0]) || u->job_id > 0);
361 }
362
363 static void output_units_list(const struct unit_info *unit_infos, unsigned c) {
364 unsigned active_len, sub_len, job_len, n_shown = 0;
365 const struct unit_info *u;
366
367 active_len = sizeof("ACTIVE")-1;
368 sub_len = sizeof("SUB")-1;
369 job_len = sizeof("JOB")-1;
370
371 for (u = unit_infos; u < unit_infos + c; u++) {
372 if (!output_show_unit(u))
373 continue;
374
375 active_len = MAX(active_len, strlen(u->active_state));
376 sub_len = MAX(sub_len, strlen(u->sub_state));
377 if (u->job_id != 0)
378 job_len = MAX(job_len, strlen(u->job_type));
379 }
380
381 if (on_tty()) {
382 printf("%-25s %-6s %-*s %-*s %-*s", "UNIT", "LOAD",
383 active_len, "ACTIVE", sub_len, "SUB", job_len, "JOB");
384 if (columns() >= 80+12 || arg_full)
385 printf(" %s\n", "DESCRIPTION");
386 else
387 printf("\n");
388 }
389
390 for (u = unit_infos; u < unit_infos + c; u++) {
391 char *e;
392 int a = 0, b = 0;
393 const char *on_loaded, *off_loaded;
394 const char *on_active, *off_active;
395
396 if (!output_show_unit(u))
397 continue;
398
399 n_shown++;
400
401 if (!streq(u->load_state, "loaded") &&
402 !streq(u->load_state, "banned")) {
403 on_loaded = ansi_highlight(true);
404 off_loaded = ansi_highlight(false);
405 } else
406 on_loaded = off_loaded = "";
407
408 if (streq(u->active_state, "failed")) {
409 on_active = ansi_highlight(true);
410 off_active = ansi_highlight(false);
411 } else
412 on_active = off_active = "";
413
414 e = arg_full ? NULL : ellipsize(u->id, 25, 33);
415
416 printf("%-25s %s%-6s%s %s%-*s %-*s%s%n",
417 e ? e : u->id,
418 on_loaded, u->load_state, off_loaded,
419 on_active, active_len, u->active_state,
420 sub_len, u->sub_state, off_active,
421 &a);
422
423 free(e);
424
425 a -= strlen(on_loaded) + strlen(off_loaded);
426 a -= strlen(on_active) + strlen(off_active);
427
428 if (u->job_id != 0)
429 printf(" %-*s", job_len, u->job_type);
430 else
431 b = 1 + job_len;
432
433 if (a + b + 1 < columns()) {
434 if (u->job_id == 0)
435 printf(" %-*s", job_len, "");
436
437 if (arg_full)
438 printf(" %s", u->description);
439 else
440 printf(" %.*s", columns() - a - b - 1, u->description);
441 }
442
443 fputs("\n", stdout);
444 }
445
446 if (on_tty()) {
447 printf("\nLOAD = Reflects whether the unit definition was properly loaded.\n"
448 "ACTIVE = The high-level unit activation state, i.e. generalization of SUB.\n"
449 "SUB = The low-level unit activation state, values depend on unit type.\n"
450 "JOB = Pending job for the unit.\n");
451
452 if (arg_all)
453 printf("\n%u units listed.\n", n_shown);
454 else
455 printf("\n%u units listed. Pass --all to see inactive units, too.\n", n_shown);
456 }
457 }
458
459 static int list_units(DBusConnection *bus, char **args, unsigned n) {
460 DBusMessage *m = NULL, *reply = NULL;
461 DBusError error;
462 int r;
463 DBusMessageIter iter, sub, sub2;
464 unsigned c = 0, n_units = 0;
465 struct unit_info *unit_infos = NULL;
466
467 dbus_error_init(&error);
468
469 assert(bus);
470
471 pager_open();
472
473 if (!(m = dbus_message_new_method_call(
474 "org.freedesktop.systemd1",
475 "/org/freedesktop/systemd1",
476 "org.freedesktop.systemd1.Manager",
477 "ListUnits"))) {
478 log_error("Could not allocate message.");
479 return -ENOMEM;
480 }
481
482 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
483 log_error("Failed to issue method call: %s", bus_error_message(&error));
484 r = -EIO;
485 goto finish;
486 }
487
488 if (!dbus_message_iter_init(reply, &iter) ||
489 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
490 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
491 log_error("Failed to parse reply.");
492 r = -EIO;
493 goto finish;
494 }
495
496 dbus_message_iter_recurse(&iter, &sub);
497
498 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
499 struct unit_info *u;
500
501 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
502 log_error("Failed to parse reply.");
503 r = -EIO;
504 goto finish;
505 }
506
507 if (c >= n_units) {
508 struct unit_info *w;
509
510 n_units = MAX(2*c, 16);
511 w = realloc(unit_infos, sizeof(struct unit_info) * n_units);
512
513 if (!w) {
514 log_error("Failed to allocate unit array.");
515 r = -ENOMEM;
516 goto finish;
517 }
518
519 unit_infos = w;
520 }
521
522 u = unit_infos+c;
523
524 dbus_message_iter_recurse(&sub, &sub2);
525
526 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->id, true) < 0 ||
527 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->description, true) < 0 ||
528 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->load_state, true) < 0 ||
529 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->active_state, true) < 0 ||
530 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->sub_state, true) < 0 ||
531 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->following, true) < 0 ||
532 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &u->unit_path, true) < 0 ||
533 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &u->job_id, true) < 0 ||
534 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->job_type, true) < 0 ||
535 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &u->job_path, false) < 0) {
536 log_error("Failed to parse reply.");
537 r = -EIO;
538 goto finish;
539 }
540
541 dbus_message_iter_next(&sub);
542 c++;
543 }
544
545 if (c > 0) {
546 qsort(unit_infos, c, sizeof(struct unit_info), compare_unit_info);
547 output_units_list(unit_infos, c);
548 }
549
550 r = 0;
551
552 finish:
553 if (m)
554 dbus_message_unref(m);
555
556 if (reply)
557 dbus_message_unref(reply);
558
559 free(unit_infos);
560
561 dbus_error_free(&error);
562
563 return r;
564 }
565
566 static int dot_one_property(const char *name, const char *prop, DBusMessageIter *iter) {
567 static const char * const colors[] = {
568 "Requires", "[color=\"black\"]",
569 "RequiresOverridable", "[color=\"black\"]",
570 "Requisite", "[color=\"darkblue\"]",
571 "RequisiteOverridable", "[color=\"darkblue\"]",
572 "Wants", "[color=\"darkgrey\"]",
573 "Conflicts", "[color=\"red\"]",
574 "ConflictedBy", "[color=\"red\"]",
575 "After", "[color=\"green\"]"
576 };
577
578 const char *c = NULL;
579 unsigned i;
580
581 assert(name);
582 assert(prop);
583 assert(iter);
584
585 for (i = 0; i < ELEMENTSOF(colors); i += 2)
586 if (streq(colors[i], prop)) {
587 c = colors[i+1];
588 break;
589 }
590
591 if (!c)
592 return 0;
593
594 if (arg_dot != DOT_ALL)
595 if ((arg_dot == DOT_ORDER) != streq(prop, "After"))
596 return 0;
597
598 switch (dbus_message_iter_get_arg_type(iter)) {
599
600 case DBUS_TYPE_ARRAY:
601
602 if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRING) {
603 DBusMessageIter sub;
604
605 dbus_message_iter_recurse(iter, &sub);
606
607 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
608 const char *s;
609
610 assert(dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING);
611 dbus_message_iter_get_basic(&sub, &s);
612 printf("\t\"%s\"->\"%s\" %s;\n", name, s, c);
613
614 dbus_message_iter_next(&sub);
615 }
616
617 return 0;
618 }
619 }
620
621 return 0;
622 }
623
624 static int dot_one(DBusConnection *bus, const char *name, const char *path) {
625 DBusMessage *m = NULL, *reply = NULL;
626 const char *interface = "org.freedesktop.systemd1.Unit";
627 int r;
628 DBusError error;
629 DBusMessageIter iter, sub, sub2, sub3;
630
631 assert(bus);
632 assert(path);
633
634 dbus_error_init(&error);
635
636 if (!(m = dbus_message_new_method_call(
637 "org.freedesktop.systemd1",
638 path,
639 "org.freedesktop.DBus.Properties",
640 "GetAll"))) {
641 log_error("Could not allocate message.");
642 r = -ENOMEM;
643 goto finish;
644 }
645
646 if (!dbus_message_append_args(m,
647 DBUS_TYPE_STRING, &interface,
648 DBUS_TYPE_INVALID)) {
649 log_error("Could not append arguments to message.");
650 r = -ENOMEM;
651 goto finish;
652 }
653
654 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
655 log_error("Failed to issue method call: %s", bus_error_message(&error));
656 r = -EIO;
657 goto finish;
658 }
659
660 if (!dbus_message_iter_init(reply, &iter) ||
661 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
662 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_DICT_ENTRY) {
663 log_error("Failed to parse reply.");
664 r = -EIO;
665 goto finish;
666 }
667
668 dbus_message_iter_recurse(&iter, &sub);
669
670 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
671 const char *prop;
672
673 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_DICT_ENTRY) {
674 log_error("Failed to parse reply.");
675 r = -EIO;
676 goto finish;
677 }
678
679 dbus_message_iter_recurse(&sub, &sub2);
680
681 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &prop, true) < 0) {
682 log_error("Failed to parse reply.");
683 r = -EIO;
684 goto finish;
685 }
686
687 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT) {
688 log_error("Failed to parse reply.");
689 r = -EIO;
690 goto finish;
691 }
692
693 dbus_message_iter_recurse(&sub2, &sub3);
694
695 if (dot_one_property(name, prop, &sub3)) {
696 log_error("Failed to parse reply.");
697 r = -EIO;
698 goto finish;
699 }
700
701 dbus_message_iter_next(&sub);
702 }
703
704 r = 0;
705
706 finish:
707 if (m)
708 dbus_message_unref(m);
709
710 if (reply)
711 dbus_message_unref(reply);
712
713 dbus_error_free(&error);
714
715 return r;
716 }
717
718 static int dot(DBusConnection *bus, char **args, unsigned n) {
719 DBusMessage *m = NULL, *reply = NULL;
720 DBusError error;
721 int r;
722 DBusMessageIter iter, sub, sub2;
723
724 dbus_error_init(&error);
725
726 assert(bus);
727
728 if (!(m = dbus_message_new_method_call(
729 "org.freedesktop.systemd1",
730 "/org/freedesktop/systemd1",
731 "org.freedesktop.systemd1.Manager",
732 "ListUnits"))) {
733 log_error("Could not allocate message.");
734 return -ENOMEM;
735 }
736
737 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
738 log_error("Failed to issue method call: %s", bus_error_message(&error));
739 r = -EIO;
740 goto finish;
741 }
742
743 if (!dbus_message_iter_init(reply, &iter) ||
744 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
745 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
746 log_error("Failed to parse reply.");
747 r = -EIO;
748 goto finish;
749 }
750
751 printf("digraph systemd {\n");
752
753 dbus_message_iter_recurse(&iter, &sub);
754 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
755 const char *id, *description, *load_state, *active_state, *sub_state, *following, *unit_path;
756
757 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
758 log_error("Failed to parse reply.");
759 r = -EIO;
760 goto finish;
761 }
762
763 dbus_message_iter_recurse(&sub, &sub2);
764
765 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &id, true) < 0 ||
766 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &description, true) < 0 ||
767 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &load_state, true) < 0 ||
768 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &active_state, true) < 0 ||
769 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &sub_state, true) < 0 ||
770 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &following, true) < 0 ||
771 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &unit_path, true) < 0) {
772 log_error("Failed to parse reply.");
773 r = -EIO;
774 goto finish;
775 }
776
777 if ((r = dot_one(bus, id, unit_path)) < 0)
778 goto finish;
779
780 /* printf("\t\"%s\";\n", id); */
781 dbus_message_iter_next(&sub);
782 }
783
784 printf("}\n");
785
786 log_info(" Color legend: black = Requires\n"
787 " dark blue = Requisite\n"
788 " dark grey = Wants\n"
789 " red = Conflicts\n"
790 " green = After\n");
791
792 if (isatty(fileno(stdout)))
793 log_notice("-- You probably want to process this output with graphviz' dot tool.\n"
794 "-- Try a shell pipeline like 'systemctl dot | dot -Tsvg > systemd.svg'!\n");
795
796 r = 0;
797
798 finish:
799 if (m)
800 dbus_message_unref(m);
801
802 if (reply)
803 dbus_message_unref(reply);
804
805 dbus_error_free(&error);
806
807 return r;
808 }
809
810 static int list_jobs(DBusConnection *bus, char **args, unsigned n) {
811 DBusMessage *m = NULL, *reply = NULL;
812 DBusError error;
813 int r;
814 DBusMessageIter iter, sub, sub2;
815 unsigned k = 0;
816
817 dbus_error_init(&error);
818
819 assert(bus);
820
821 pager_open();
822
823 if (!(m = dbus_message_new_method_call(
824 "org.freedesktop.systemd1",
825 "/org/freedesktop/systemd1",
826 "org.freedesktop.systemd1.Manager",
827 "ListJobs"))) {
828 log_error("Could not allocate message.");
829 return -ENOMEM;
830 }
831
832 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
833 log_error("Failed to issue method call: %s", bus_error_message(&error));
834 r = -EIO;
835 goto finish;
836 }
837
838 if (!dbus_message_iter_init(reply, &iter) ||
839 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
840 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
841 log_error("Failed to parse reply.");
842 r = -EIO;
843 goto finish;
844 }
845
846 dbus_message_iter_recurse(&iter, &sub);
847
848 if (isatty(STDOUT_FILENO))
849 printf("%4s %-25s %-15s %-7s\n", "JOB", "UNIT", "TYPE", "STATE");
850
851 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
852 const char *name, *type, *state, *job_path, *unit_path;
853 uint32_t id;
854 char *e;
855
856 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
857 log_error("Failed to parse reply.");
858 r = -EIO;
859 goto finish;
860 }
861
862 dbus_message_iter_recurse(&sub, &sub2);
863
864 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &id, true) < 0 ||
865 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0 ||
866 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) < 0 ||
867 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &state, true) < 0 ||
868 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &job_path, true) < 0 ||
869 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &unit_path, false) < 0) {
870 log_error("Failed to parse reply.");
871 r = -EIO;
872 goto finish;
873 }
874
875 e = arg_full ? NULL : ellipsize(name, 25, 33);
876 printf("%4u %-25s %-15s %-7s\n", id, e ? e : name, type, state);
877 free(e);
878
879 k++;
880
881 dbus_message_iter_next(&sub);
882 }
883
884 if (isatty(STDOUT_FILENO))
885 printf("\n%u jobs listed.\n", k);
886
887 r = 0;
888
889 finish:
890 if (m)
891 dbus_message_unref(m);
892
893 if (reply)
894 dbus_message_unref(reply);
895
896 dbus_error_free(&error);
897
898 return r;
899 }
900
901 static int load_unit(DBusConnection *bus, char **args, unsigned n) {
902 DBusMessage *m = NULL, *reply = NULL;
903 DBusError error;
904 int r;
905 unsigned i;
906
907 dbus_error_init(&error);
908
909 assert(bus);
910 assert(args);
911
912 for (i = 1; i < n; i++) {
913
914 if (!(m = dbus_message_new_method_call(
915 "org.freedesktop.systemd1",
916 "/org/freedesktop/systemd1",
917 "org.freedesktop.systemd1.Manager",
918 "LoadUnit"))) {
919 log_error("Could not allocate message.");
920 r = -ENOMEM;
921 goto finish;
922 }
923
924 if (!dbus_message_append_args(m,
925 DBUS_TYPE_STRING, &args[i],
926 DBUS_TYPE_INVALID)) {
927 log_error("Could not append arguments to message.");
928 r = -ENOMEM;
929 goto finish;
930 }
931
932 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
933 log_error("Failed to issue method call: %s", bus_error_message(&error));
934 r = -EIO;
935 goto finish;
936 }
937
938 dbus_message_unref(m);
939 dbus_message_unref(reply);
940
941 m = reply = NULL;
942 }
943
944 r = 0;
945
946 finish:
947 if (m)
948 dbus_message_unref(m);
949
950 if (reply)
951 dbus_message_unref(reply);
952
953 dbus_error_free(&error);
954
955 return r;
956 }
957
958 static int cancel_job(DBusConnection *bus, char **args, unsigned n) {
959 DBusMessage *m = NULL, *reply = NULL;
960 DBusError error;
961 int r;
962 unsigned i;
963
964 dbus_error_init(&error);
965
966 assert(bus);
967 assert(args);
968
969 if (n <= 1)
970 return daemon_reload(bus, args, n);
971
972 for (i = 1; i < n; i++) {
973 unsigned id;
974 const char *path;
975
976 if (!(m = dbus_message_new_method_call(
977 "org.freedesktop.systemd1",
978 "/org/freedesktop/systemd1",
979 "org.freedesktop.systemd1.Manager",
980 "GetJob"))) {
981 log_error("Could not allocate message.");
982 r = -ENOMEM;
983 goto finish;
984 }
985
986 if ((r = safe_atou(args[i], &id)) < 0) {
987 log_error("Failed to parse job id: %s", strerror(-r));
988 goto finish;
989 }
990
991 assert_cc(sizeof(uint32_t) == sizeof(id));
992 if (!dbus_message_append_args(m,
993 DBUS_TYPE_UINT32, &id,
994 DBUS_TYPE_INVALID)) {
995 log_error("Could not append arguments to message.");
996 r = -ENOMEM;
997 goto finish;
998 }
999
1000 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1001 log_error("Failed to issue method call: %s", bus_error_message(&error));
1002 r = -EIO;
1003 goto finish;
1004 }
1005
1006 if (!dbus_message_get_args(reply, &error,
1007 DBUS_TYPE_OBJECT_PATH, &path,
1008 DBUS_TYPE_INVALID)) {
1009 log_error("Failed to parse reply: %s", bus_error_message(&error));
1010 r = -EIO;
1011 goto finish;
1012 }
1013
1014 dbus_message_unref(m);
1015 if (!(m = dbus_message_new_method_call(
1016 "org.freedesktop.systemd1",
1017 path,
1018 "org.freedesktop.systemd1.Job",
1019 "Cancel"))) {
1020 log_error("Could not allocate message.");
1021 r = -ENOMEM;
1022 goto finish;
1023 }
1024
1025 dbus_message_unref(reply);
1026 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1027 log_error("Failed to issue method call: %s", bus_error_message(&error));
1028 r = -EIO;
1029 goto finish;
1030 }
1031
1032 dbus_message_unref(m);
1033 dbus_message_unref(reply);
1034 m = reply = NULL;
1035 }
1036
1037 r = 0;
1038
1039 finish:
1040 if (m)
1041 dbus_message_unref(m);
1042
1043 if (reply)
1044 dbus_message_unref(reply);
1045
1046 dbus_error_free(&error);
1047
1048 return r;
1049 }
1050
1051 static bool need_daemon_reload(DBusConnection *bus, const char *unit) {
1052 DBusMessage *m = NULL, *reply = NULL;
1053 dbus_bool_t b = FALSE;
1054 DBusMessageIter iter, sub;
1055 const char
1056 *interface = "org.freedesktop.systemd1.Unit",
1057 *property = "NeedDaemonReload",
1058 *path;
1059
1060 /* We ignore all errors here, since this is used to show a warning only */
1061
1062 if (!(m = dbus_message_new_method_call(
1063 "org.freedesktop.systemd1",
1064 "/org/freedesktop/systemd1",
1065 "org.freedesktop.systemd1.Manager",
1066 "GetUnit")))
1067 goto finish;
1068
1069 if (!dbus_message_append_args(m,
1070 DBUS_TYPE_STRING, &unit,
1071 DBUS_TYPE_INVALID))
1072 goto finish;
1073
1074 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, NULL)))
1075 goto finish;
1076
1077 if (!dbus_message_get_args(reply, NULL,
1078 DBUS_TYPE_OBJECT_PATH, &path,
1079 DBUS_TYPE_INVALID))
1080 goto finish;
1081
1082 dbus_message_unref(m);
1083 if (!(m = dbus_message_new_method_call(
1084 "org.freedesktop.systemd1",
1085 path,
1086 "org.freedesktop.DBus.Properties",
1087 "Get")))
1088 goto finish;
1089
1090 if (!dbus_message_append_args(m,
1091 DBUS_TYPE_STRING, &interface,
1092 DBUS_TYPE_STRING, &property,
1093 DBUS_TYPE_INVALID)) {
1094 goto finish;
1095 }
1096
1097 dbus_message_unref(reply);
1098 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, NULL)))
1099 goto finish;
1100
1101 if (!dbus_message_iter_init(reply, &iter) ||
1102 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT)
1103 goto finish;
1104
1105 dbus_message_iter_recurse(&iter, &sub);
1106
1107 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_BOOLEAN)
1108 goto finish;
1109
1110 dbus_message_iter_get_basic(&sub, &b);
1111
1112 finish:
1113 if (m)
1114 dbus_message_unref(m);
1115
1116 if (reply)
1117 dbus_message_unref(reply);
1118
1119 return b;
1120 }
1121
1122 typedef struct WaitData {
1123 Set *set;
1124 char *result;
1125 } WaitData;
1126
1127 static DBusHandlerResult wait_filter(DBusConnection *connection, DBusMessage *message, void *data) {
1128 DBusError error;
1129 WaitData *d = data;
1130
1131 assert(connection);
1132 assert(message);
1133 assert(d);
1134
1135 dbus_error_init(&error);
1136
1137 log_debug("Got D-Bus request: %s.%s() on %s",
1138 dbus_message_get_interface(message),
1139 dbus_message_get_member(message),
1140 dbus_message_get_path(message));
1141
1142 if (dbus_message_is_signal(message, DBUS_INTERFACE_LOCAL, "Disconnected")) {
1143 log_error("Warning! D-Bus connection terminated.");
1144 dbus_connection_close(connection);
1145
1146 } else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "JobRemoved")) {
1147 uint32_t id;
1148 const char *path, *result;
1149 dbus_bool_t success = true;
1150
1151 if (dbus_message_get_args(message, &error,
1152 DBUS_TYPE_UINT32, &id,
1153 DBUS_TYPE_OBJECT_PATH, &path,
1154 DBUS_TYPE_STRING, &result,
1155 DBUS_TYPE_INVALID)) {
1156 char *p;
1157
1158 if ((p = set_remove(d->set, (char*) path)))
1159 free(p);
1160
1161 if (*result)
1162 d->result = strdup(result);
1163
1164 goto finish;
1165 }
1166 #ifndef LEGACY
1167 dbus_error_free(&error);
1168
1169 if (dbus_message_get_args(message, &error,
1170 DBUS_TYPE_UINT32, &id,
1171 DBUS_TYPE_OBJECT_PATH, &path,
1172 DBUS_TYPE_BOOLEAN, &success,
1173 DBUS_TYPE_INVALID)) {
1174 char *p;
1175
1176 /* Compatibility with older systemd versions <
1177 * 19 during upgrades. This should be dropped
1178 * one day */
1179
1180 if ((p = set_remove(d->set, (char*) path)))
1181 free(p);
1182
1183 if (!success)
1184 d->result = strdup("failed");
1185
1186 goto finish;
1187 }
1188 #endif
1189
1190 log_error("Failed to parse message: %s", bus_error_message(&error));
1191 }
1192
1193 finish:
1194 dbus_error_free(&error);
1195 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1196 }
1197
1198 static int enable_wait_for_jobs(DBusConnection *bus) {
1199 DBusError error;
1200
1201 assert(bus);
1202
1203 if (private_bus)
1204 return 0;
1205
1206 dbus_error_init(&error);
1207 dbus_bus_add_match(bus,
1208 "type='signal',"
1209 "sender='org.freedesktop.systemd1',"
1210 "interface='org.freedesktop.systemd1.Manager',"
1211 "member='JobRemoved',"
1212 "path='/org/freedesktop/systemd1'",
1213 &error);
1214
1215 if (dbus_error_is_set(&error)) {
1216 log_error("Failed to add match: %s", bus_error_message(&error));
1217 dbus_error_free(&error);
1218 return -EIO;
1219 }
1220
1221 /* This is slightly dirty, since we don't undo the match registrations. */
1222 return 0;
1223 }
1224
1225 static int wait_for_jobs(DBusConnection *bus, Set *s) {
1226 int r;
1227 WaitData d;
1228
1229 assert(bus);
1230 assert(s);
1231
1232 zero(d);
1233 d.set = s;
1234
1235 if (!dbus_connection_add_filter(bus, wait_filter, &d, NULL)) {
1236 log_error("Failed to add filter.");
1237 r = -ENOMEM;
1238 goto finish;
1239 }
1240
1241 while (!set_isempty(s) &&
1242 dbus_connection_read_write_dispatch(bus, -1))
1243 ;
1244
1245 if (!arg_quiet && d.result) {
1246 if (streq(d.result, "timeout"))
1247 log_error("Job timed out.");
1248 else if (streq(d.result, "canceled"))
1249 log_error("Job canceled.");
1250 else if (streq(d.result, "dependency"))
1251 log_error("A dependency job failed. See system logs for details.");
1252 else if (!streq(d.result, "done") && !streq(d.result, "skipped"))
1253 log_error("Job failed. See system logs and 'systemctl status' for details.");
1254 }
1255
1256 if (streq_ptr(d.result, "timeout"))
1257 r = -ETIME;
1258 else if (streq_ptr(d.result, "canceled"))
1259 r = -ECANCELED;
1260 else if (!streq_ptr(d.result, "done") && !streq_ptr(d.result, "skipped"))
1261 r = -EIO;
1262 else
1263 r = 0;
1264
1265 free(d.result);
1266
1267 finish:
1268 /* This is slightly dirty, since we don't undo the filter registration. */
1269
1270 return r;
1271 }
1272
1273 static int start_unit_one(
1274 DBusConnection *bus,
1275 const char *method,
1276 const char *name,
1277 const char *mode,
1278 DBusError *error,
1279 Set *s) {
1280
1281 DBusMessage *m = NULL, *reply = NULL;
1282 const char *path;
1283 int r;
1284
1285 assert(bus);
1286 assert(method);
1287 assert(name);
1288 assert(mode);
1289 assert(error);
1290 assert(arg_no_block || s);
1291
1292 if (!(m = dbus_message_new_method_call(
1293 "org.freedesktop.systemd1",
1294 "/org/freedesktop/systemd1",
1295 "org.freedesktop.systemd1.Manager",
1296 method))) {
1297 log_error("Could not allocate message.");
1298 r = -ENOMEM;
1299 goto finish;
1300 }
1301
1302 if (!dbus_message_append_args(m,
1303 DBUS_TYPE_STRING, &name,
1304 DBUS_TYPE_STRING, &mode,
1305 DBUS_TYPE_INVALID)) {
1306 log_error("Could not append arguments to message.");
1307 r = -ENOMEM;
1308 goto finish;
1309 }
1310
1311 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, error))) {
1312
1313 if (arg_action != ACTION_SYSTEMCTL && error_is_no_service(error)) {
1314 /* There's always a fallback possible for
1315 * legacy actions. */
1316 r = -EADDRNOTAVAIL;
1317 goto finish;
1318 }
1319
1320 log_error("Failed to issue method call: %s", bus_error_message(error));
1321 r = -EIO;
1322 goto finish;
1323 }
1324
1325 if (!dbus_message_get_args(reply, error,
1326 DBUS_TYPE_OBJECT_PATH, &path,
1327 DBUS_TYPE_INVALID)) {
1328 log_error("Failed to parse reply: %s", bus_error_message(error));
1329 r = -EIO;
1330 goto finish;
1331 }
1332
1333 if (need_daemon_reload(bus, name))
1334 log_warning("Unit file of created job changed on disk, 'systemctl %s daemon-reload' recommended.",
1335 arg_user ? "--user" : "--system");
1336
1337 if (!arg_no_block) {
1338 char *p;
1339
1340 if (!(p = strdup(path))) {
1341 log_error("Failed to duplicate path.");
1342 r = -ENOMEM;
1343 goto finish;
1344 }
1345
1346 if ((r = set_put(s, p)) < 0) {
1347 free(p);
1348 log_error("Failed to add path to set.");
1349 goto finish;
1350 }
1351 }
1352
1353 r = 0;
1354
1355 finish:
1356 if (m)
1357 dbus_message_unref(m);
1358
1359 if (reply)
1360 dbus_message_unref(reply);
1361
1362 return r;
1363 }
1364
1365 static enum action verb_to_action(const char *verb) {
1366 if (streq(verb, "halt"))
1367 return ACTION_HALT;
1368 else if (streq(verb, "poweroff"))
1369 return ACTION_POWEROFF;
1370 else if (streq(verb, "reboot"))
1371 return ACTION_REBOOT;
1372 else if (streq(verb, "kexec"))
1373 return ACTION_KEXEC;
1374 else if (streq(verb, "rescue"))
1375 return ACTION_RESCUE;
1376 else if (streq(verb, "emergency"))
1377 return ACTION_EMERGENCY;
1378 else if (streq(verb, "default"))
1379 return ACTION_DEFAULT;
1380 else if (streq(verb, "exit"))
1381 return ACTION_EXIT;
1382 else
1383 return ACTION_INVALID;
1384 }
1385
1386 static int start_unit(DBusConnection *bus, char **args, unsigned n) {
1387
1388 static const char * const table[_ACTION_MAX] = {
1389 [ACTION_HALT] = SPECIAL_HALT_TARGET,
1390 [ACTION_POWEROFF] = SPECIAL_POWEROFF_TARGET,
1391 [ACTION_REBOOT] = SPECIAL_REBOOT_TARGET,
1392 [ACTION_KEXEC] = SPECIAL_KEXEC_TARGET,
1393 [ACTION_RUNLEVEL2] = SPECIAL_RUNLEVEL2_TARGET,
1394 [ACTION_RUNLEVEL3] = SPECIAL_RUNLEVEL3_TARGET,
1395 [ACTION_RUNLEVEL4] = SPECIAL_RUNLEVEL4_TARGET,
1396 [ACTION_RUNLEVEL5] = SPECIAL_RUNLEVEL5_TARGET,
1397 [ACTION_RESCUE] = SPECIAL_RESCUE_TARGET,
1398 [ACTION_EMERGENCY] = SPECIAL_EMERGENCY_TARGET,
1399 [ACTION_DEFAULT] = SPECIAL_DEFAULT_TARGET,
1400 [ACTION_EXIT] = SPECIAL_EXIT_TARGET
1401 };
1402
1403 int r, ret = 0;
1404 unsigned i;
1405 const char *method, *mode, *one_name;
1406 Set *s = NULL;
1407 DBusError error;
1408
1409 dbus_error_init(&error);
1410
1411 assert(bus);
1412
1413 spawn_ask_password_agent();
1414
1415 if (arg_action == ACTION_SYSTEMCTL) {
1416 method =
1417 streq(args[0], "stop") ? "StopUnit" :
1418 streq(args[0], "reload") ? "ReloadUnit" :
1419 streq(args[0], "restart") ? "RestartUnit" :
1420
1421 streq(args[0], "try-restart") ||
1422 streq(args[0], "condrestart") ? "TryRestartUnit" :
1423
1424 streq(args[0], "reload-or-restart") ? "ReloadOrRestartUnit" :
1425
1426 streq(args[0], "reload-or-try-restart") ||
1427 streq(args[0], "condreload") ||
1428
1429 streq(args[0], "force-reload") ? "ReloadOrTryRestartUnit" :
1430 "StartUnit";
1431
1432 mode =
1433 (streq(args[0], "isolate") ||
1434 streq(args[0], "rescue") ||
1435 streq(args[0], "emergency")) ? "isolate" : arg_job_mode;
1436
1437 one_name = table[verb_to_action(args[0])];
1438
1439 } else {
1440 assert(arg_action < ELEMENTSOF(table));
1441 assert(table[arg_action]);
1442
1443 method = "StartUnit";
1444
1445 mode = (arg_action == ACTION_EMERGENCY ||
1446 arg_action == ACTION_RESCUE ||
1447 arg_action == ACTION_RUNLEVEL2 ||
1448 arg_action == ACTION_RUNLEVEL3 ||
1449 arg_action == ACTION_RUNLEVEL4 ||
1450 arg_action == ACTION_RUNLEVEL5) ? "isolate" : "replace";
1451
1452 one_name = table[arg_action];
1453 }
1454
1455 if (!arg_no_block) {
1456 if ((ret = enable_wait_for_jobs(bus)) < 0) {
1457 log_error("Could not watch jobs: %s", strerror(-ret));
1458 goto finish;
1459 }
1460
1461 if (!(s = set_new(string_hash_func, string_compare_func))) {
1462 log_error("Failed to allocate set.");
1463 ret = -ENOMEM;
1464 goto finish;
1465 }
1466 }
1467
1468 if (one_name) {
1469 if ((ret = start_unit_one(bus, method, one_name, mode, &error, s)) <= 0)
1470 goto finish;
1471 } else {
1472 for (i = 1; i < n; i++)
1473 if ((r = start_unit_one(bus, method, args[i], mode, &error, s)) != 0) {
1474 ret = translate_bus_error_to_exit_status(r, &error);
1475 dbus_error_free(&error);
1476 }
1477 }
1478
1479 if (!arg_no_block)
1480 if ((r = wait_for_jobs(bus, s)) < 0) {
1481 ret = r;
1482 goto finish;
1483 }
1484
1485 finish:
1486 if (s)
1487 set_free_free(s);
1488
1489 dbus_error_free(&error);
1490
1491 return ret;
1492 }
1493
1494 static int start_special(DBusConnection *bus, char **args, unsigned n) {
1495 int r;
1496
1497 assert(bus);
1498 assert(args);
1499
1500 if (arg_force &&
1501 (streq(args[0], "halt") ||
1502 streq(args[0], "poweroff") ||
1503 streq(args[0], "reboot") ||
1504 streq(args[0], "kexec") ||
1505 streq(args[0], "exit")))
1506 return daemon_reload(bus, args, n);
1507
1508 r = start_unit(bus, args, n);
1509
1510 if (r >= 0)
1511 warn_wall(verb_to_action(args[0]));
1512
1513 return r;
1514 }
1515
1516 static int check_unit(DBusConnection *bus, char **args, unsigned n) {
1517 DBusMessage *m = NULL, *reply = NULL;
1518 const char
1519 *interface = "org.freedesktop.systemd1.Unit",
1520 *property = "ActiveState";
1521 int r = 3; /* According to LSB: "program is not running" */
1522 DBusError error;
1523 unsigned i;
1524
1525 assert(bus);
1526 assert(args);
1527
1528 dbus_error_init(&error);
1529
1530 for (i = 1; i < n; i++) {
1531 const char *path = NULL;
1532 const char *state;
1533 DBusMessageIter iter, sub;
1534
1535 if (!(m = dbus_message_new_method_call(
1536 "org.freedesktop.systemd1",
1537 "/org/freedesktop/systemd1",
1538 "org.freedesktop.systemd1.Manager",
1539 "GetUnit"))) {
1540 log_error("Could not allocate message.");
1541 r = -ENOMEM;
1542 goto finish;
1543 }
1544
1545 if (!dbus_message_append_args(m,
1546 DBUS_TYPE_STRING, &args[i],
1547 DBUS_TYPE_INVALID)) {
1548 log_error("Could not append arguments to message.");
1549 r = -ENOMEM;
1550 goto finish;
1551 }
1552
1553 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1554
1555 /* Hmm, cannot figure out anything about this unit... */
1556 if (!arg_quiet)
1557 puts("unknown");
1558
1559 dbus_error_free(&error);
1560 dbus_message_unref(m);
1561 continue;
1562 }
1563
1564 if (!dbus_message_get_args(reply, &error,
1565 DBUS_TYPE_OBJECT_PATH, &path,
1566 DBUS_TYPE_INVALID)) {
1567 log_error("Failed to parse reply: %s", bus_error_message(&error));
1568 r = -EIO;
1569 goto finish;
1570 }
1571
1572 dbus_message_unref(m);
1573 if (!(m = dbus_message_new_method_call(
1574 "org.freedesktop.systemd1",
1575 path,
1576 "org.freedesktop.DBus.Properties",
1577 "Get"))) {
1578 log_error("Could not allocate message.");
1579 r = -ENOMEM;
1580 goto finish;
1581 }
1582
1583 if (!dbus_message_append_args(m,
1584 DBUS_TYPE_STRING, &interface,
1585 DBUS_TYPE_STRING, &property,
1586 DBUS_TYPE_INVALID)) {
1587 log_error("Could not append arguments to message.");
1588 r = -ENOMEM;
1589 goto finish;
1590 }
1591
1592 dbus_message_unref(reply);
1593 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1594 log_error("Failed to issue method call: %s", bus_error_message(&error));
1595 r = -EIO;
1596 goto finish;
1597 }
1598
1599 if (!dbus_message_iter_init(reply, &iter) ||
1600 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
1601 log_error("Failed to parse reply.");
1602 r = -EIO;
1603 goto finish;
1604 }
1605
1606 dbus_message_iter_recurse(&iter, &sub);
1607
1608 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
1609 log_error("Failed to parse reply.");
1610 r = -EIO;
1611 goto finish;
1612 }
1613
1614 dbus_message_iter_get_basic(&sub, &state);
1615
1616 if (!arg_quiet)
1617 puts(state);
1618
1619 if (streq(state, "active") || streq(state, "reloading"))
1620 r = 0;
1621
1622 dbus_message_unref(m);
1623 dbus_message_unref(reply);
1624 m = reply = NULL;
1625 }
1626
1627 finish:
1628 if (m)
1629 dbus_message_unref(m);
1630
1631 if (reply)
1632 dbus_message_unref(reply);
1633
1634 dbus_error_free(&error);
1635
1636 return r;
1637 }
1638
1639 static int kill_unit(DBusConnection *bus, char **args, unsigned n) {
1640 DBusMessage *m = NULL, *reply = NULL;
1641 int r = 0;
1642 DBusError error;
1643 unsigned i;
1644
1645 assert(bus);
1646 assert(args);
1647
1648 dbus_error_init(&error);
1649
1650 if (!arg_kill_who)
1651 arg_kill_who = "all";
1652
1653 if (!arg_kill_mode)
1654 arg_kill_mode = streq(arg_kill_who, "all") ? "control-group" : "process";
1655
1656 for (i = 1; i < n; i++) {
1657
1658 if (!(m = dbus_message_new_method_call(
1659 "org.freedesktop.systemd1",
1660 "/org/freedesktop/systemd1",
1661 "org.freedesktop.systemd1.Manager",
1662 "KillUnit"))) {
1663 log_error("Could not allocate message.");
1664 r = -ENOMEM;
1665 goto finish;
1666 }
1667
1668 if (!dbus_message_append_args(m,
1669 DBUS_TYPE_STRING, &args[i],
1670 DBUS_TYPE_STRING, &arg_kill_who,
1671 DBUS_TYPE_STRING, &arg_kill_mode,
1672 DBUS_TYPE_INT32, &arg_signal,
1673 DBUS_TYPE_INVALID)) {
1674 log_error("Could not append arguments to message.");
1675 r = -ENOMEM;
1676 goto finish;
1677 }
1678
1679 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1680 log_error("Failed to issue method call: %s", bus_error_message(&error));
1681 dbus_error_free(&error);
1682 r = -EIO;
1683 }
1684
1685 dbus_message_unref(m);
1686
1687 if (reply)
1688 dbus_message_unref(reply);
1689 m = reply = NULL;
1690 }
1691
1692 finish:
1693 if (m)
1694 dbus_message_unref(m);
1695
1696 if (reply)
1697 dbus_message_unref(reply);
1698
1699 dbus_error_free(&error);
1700
1701 return r;
1702 }
1703
1704 typedef struct ExecStatusInfo {
1705 char *name;
1706
1707 char *path;
1708 char **argv;
1709
1710 bool ignore;
1711
1712 usec_t start_timestamp;
1713 usec_t exit_timestamp;
1714 pid_t pid;
1715 int code;
1716 int status;
1717
1718 LIST_FIELDS(struct ExecStatusInfo, exec);
1719 } ExecStatusInfo;
1720
1721 static void exec_status_info_free(ExecStatusInfo *i) {
1722 assert(i);
1723
1724 free(i->name);
1725 free(i->path);
1726 strv_free(i->argv);
1727 free(i);
1728 }
1729
1730 static int exec_status_info_deserialize(DBusMessageIter *sub, ExecStatusInfo *i) {
1731 uint64_t start_timestamp, exit_timestamp;
1732 DBusMessageIter sub2, sub3;
1733 const char*path;
1734 unsigned n;
1735 uint32_t pid;
1736 int32_t code, status;
1737 dbus_bool_t ignore;
1738
1739 assert(i);
1740 assert(i);
1741
1742 if (dbus_message_iter_get_arg_type(sub) != DBUS_TYPE_STRUCT)
1743 return -EIO;
1744
1745 dbus_message_iter_recurse(sub, &sub2);
1746
1747 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, true) < 0)
1748 return -EIO;
1749
1750 if (!(i->path = strdup(path)))
1751 return -ENOMEM;
1752
1753 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_ARRAY ||
1754 dbus_message_iter_get_element_type(&sub2) != DBUS_TYPE_STRING)
1755 return -EIO;
1756
1757 n = 0;
1758 dbus_message_iter_recurse(&sub2, &sub3);
1759 while (dbus_message_iter_get_arg_type(&sub3) != DBUS_TYPE_INVALID) {
1760 assert(dbus_message_iter_get_arg_type(&sub3) == DBUS_TYPE_STRING);
1761 dbus_message_iter_next(&sub3);
1762 n++;
1763 }
1764
1765
1766 if (!(i->argv = new0(char*, n+1)))
1767 return -ENOMEM;
1768
1769 n = 0;
1770 dbus_message_iter_recurse(&sub2, &sub3);
1771 while (dbus_message_iter_get_arg_type(&sub3) != DBUS_TYPE_INVALID) {
1772 const char *s;
1773
1774 assert(dbus_message_iter_get_arg_type(&sub3) == DBUS_TYPE_STRING);
1775 dbus_message_iter_get_basic(&sub3, &s);
1776 dbus_message_iter_next(&sub3);
1777
1778 if (!(i->argv[n++] = strdup(s)))
1779 return -ENOMEM;
1780 }
1781
1782 if (!dbus_message_iter_next(&sub2) ||
1783 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_BOOLEAN, &ignore, true) < 0 ||
1784 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &start_timestamp, true) < 0 ||
1785 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &exit_timestamp, true) < 0 ||
1786 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &pid, true) < 0 ||
1787 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_INT32, &code, true) < 0 ||
1788 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_INT32, &status, false) < 0)
1789 return -EIO;
1790
1791 i->ignore = ignore;
1792 i->start_timestamp = (usec_t) start_timestamp;
1793 i->exit_timestamp = (usec_t) exit_timestamp;
1794 i->pid = (pid_t) pid;
1795 i->code = code;
1796 i->status = status;
1797
1798 return 0;
1799 }
1800
1801 typedef struct UnitStatusInfo {
1802 const char *id;
1803 const char *load_state;
1804 const char *active_state;
1805 const char *sub_state;
1806
1807 const char *description;
1808 const char *following;
1809
1810 const char *path;
1811 const char *default_control_group;
1812
1813 usec_t inactive_exit_timestamp;
1814 usec_t active_enter_timestamp;
1815 usec_t active_exit_timestamp;
1816 usec_t inactive_enter_timestamp;
1817
1818 bool need_daemon_reload;
1819
1820 /* Service */
1821 pid_t main_pid;
1822 pid_t control_pid;
1823 const char *status_text;
1824 bool running:1;
1825 #ifdef HAVE_SYSV_COMPAT
1826 bool is_sysv:1;
1827 #endif
1828
1829 usec_t start_timestamp;
1830 usec_t exit_timestamp;
1831
1832 int exit_code, exit_status;
1833
1834 usec_t condition_timestamp;
1835 bool condition_result;
1836
1837 /* Socket */
1838 unsigned n_accepted;
1839 unsigned n_connections;
1840 bool accept;
1841
1842 /* Device */
1843 const char *sysfs_path;
1844
1845 /* Mount, Automount */
1846 const char *where;
1847
1848 /* Swap */
1849 const char *what;
1850
1851 LIST_HEAD(ExecStatusInfo, exec);
1852 } UnitStatusInfo;
1853
1854 static void print_status_info(UnitStatusInfo *i) {
1855 ExecStatusInfo *p;
1856 const char *on, *off, *ss;
1857 usec_t timestamp;
1858 char since1[FORMAT_TIMESTAMP_PRETTY_MAX], *s1;
1859 char since2[FORMAT_TIMESTAMP_MAX], *s2;
1860
1861 assert(i);
1862
1863 /* This shows pretty information about a unit. See
1864 * print_property() for a low-level property printer */
1865
1866 printf("%s", strna(i->id));
1867
1868 if (i->description && !streq_ptr(i->id, i->description))
1869 printf(" - %s", i->description);
1870
1871 printf("\n");
1872
1873 if (i->following)
1874 printf("\t Follow: unit currently follows state of %s\n", i->following);
1875
1876 if (streq_ptr(i->load_state, "failed") ||
1877 streq_ptr(i->load_state, "banned")) {
1878 on = ansi_highlight(true);
1879 off = ansi_highlight(false);
1880 } else
1881 on = off = "";
1882
1883 if (i->path)
1884 printf("\t Loaded: %s%s%s (%s)\n", on, strna(i->load_state), off, i->path);
1885 else
1886 printf("\t Loaded: %s%s%s\n", on, strna(i->load_state), off);
1887
1888 ss = streq_ptr(i->active_state, i->sub_state) ? NULL : i->sub_state;
1889
1890 if (streq_ptr(i->active_state, "failed")) {
1891 on = ansi_highlight(true);
1892 off = ansi_highlight(false);
1893 } else if (streq_ptr(i->active_state, "active") || streq_ptr(i->active_state, "reloading")) {
1894 on = ansi_highlight_green(true);
1895 off = ansi_highlight_green(false);
1896 } else
1897 on = off = "";
1898
1899 if (ss)
1900 printf("\t Active: %s%s (%s)%s",
1901 on,
1902 strna(i->active_state),
1903 ss,
1904 off);
1905 else
1906 printf("\t Active: %s%s%s",
1907 on,
1908 strna(i->active_state),
1909 off);
1910
1911 timestamp = (streq_ptr(i->active_state, "active") ||
1912 streq_ptr(i->active_state, "reloading")) ? i->active_enter_timestamp :
1913 (streq_ptr(i->active_state, "inactive") ||
1914 streq_ptr(i->active_state, "failed")) ? i->inactive_enter_timestamp :
1915 streq_ptr(i->active_state, "activating") ? i->inactive_exit_timestamp :
1916 i->active_exit_timestamp;
1917
1918 s1 = format_timestamp_pretty(since1, sizeof(since1), timestamp);
1919 s2 = format_timestamp(since2, sizeof(since2), timestamp);
1920
1921 if (s1)
1922 printf(" since %s; %s\n", s2, s1);
1923 else if (s2)
1924 printf(" since %s\n", s2);
1925 else
1926 printf("\n");
1927
1928 if (!i->condition_result && i->condition_timestamp > 0) {
1929 s1 = format_timestamp_pretty(since1, sizeof(since1), i->condition_timestamp);
1930 s2 = format_timestamp(since2, sizeof(since2), i->condition_timestamp);
1931
1932 if (s1)
1933 printf("\t start condition failed at %s; %s\n", s2, s1);
1934 else if (s2)
1935 printf("\t start condition failed at %s\n", s2);
1936 }
1937
1938 if (i->sysfs_path)
1939 printf("\t Device: %s\n", i->sysfs_path);
1940 if (i->where)
1941 printf("\t Where: %s\n", i->where);
1942 if (i->what)
1943 printf("\t What: %s\n", i->what);
1944
1945 if (i->accept)
1946 printf("\tAccepted: %u; Connected: %u\n", i->n_accepted, i->n_connections);
1947
1948 LIST_FOREACH(exec, p, i->exec) {
1949 char *t;
1950 bool good;
1951
1952 /* Only show exited processes here */
1953 if (p->code == 0)
1954 continue;
1955
1956 t = strv_join(p->argv, " ");
1957 printf("\t Process: %u %s=%s ", p->pid, p->name, strna(t));
1958 free(t);
1959
1960 #ifdef HAVE_SYSV_COMPAT
1961 if (i->is_sysv)
1962 good = is_clean_exit_lsb(p->code, p->status);
1963 else
1964 #endif
1965 good = is_clean_exit(p->code, p->status);
1966
1967 if (!good) {
1968 on = ansi_highlight(true);
1969 off = ansi_highlight(false);
1970 } else
1971 on = off = "";
1972
1973 printf("%s(code=%s, ", on, sigchld_code_to_string(p->code));
1974
1975 if (p->code == CLD_EXITED) {
1976 const char *c;
1977
1978 printf("status=%i", p->status);
1979
1980 #ifdef HAVE_SYSV_COMPAT
1981 if ((c = exit_status_to_string(p->status, i->is_sysv ? EXIT_STATUS_LSB : EXIT_STATUS_SYSTEMD)))
1982 #else
1983 if ((c = exit_status_to_string(p->status, EXIT_STATUS_SYSTEMD)))
1984 #endif
1985 printf("/%s", c);
1986
1987 } else
1988 printf("signal=%s", signal_to_string(p->status));
1989
1990 printf(")%s\n", off);
1991
1992 on = off = NULL;
1993
1994 if (i->main_pid == p->pid &&
1995 i->start_timestamp == p->start_timestamp &&
1996 i->exit_timestamp == p->start_timestamp)
1997 /* Let's not show this twice */
1998 i->main_pid = 0;
1999
2000 if (p->pid == i->control_pid)
2001 i->control_pid = 0;
2002 }
2003
2004 if (i->main_pid > 0 || i->control_pid > 0) {
2005 printf("\t");
2006
2007 if (i->main_pid > 0) {
2008 printf("Main PID: %u", (unsigned) i->main_pid);
2009
2010 if (i->running) {
2011 char *t = NULL;
2012 get_process_name(i->main_pid, &t);
2013 if (t) {
2014 printf(" (%s)", t);
2015 free(t);
2016 }
2017 } else if (i->exit_code > 0) {
2018 printf(" (code=%s, ", sigchld_code_to_string(i->exit_code));
2019
2020 if (i->exit_code == CLD_EXITED) {
2021 const char *c;
2022
2023 printf("status=%i", i->exit_status);
2024
2025 #ifdef HAVE_SYSV_COMPAT
2026 if ((c = exit_status_to_string(i->exit_status, i->is_sysv ? EXIT_STATUS_LSB : EXIT_STATUS_SYSTEMD)))
2027 #else
2028 if ((c = exit_status_to_string(i->exit_status, EXIT_STATUS_SYSTEMD)))
2029 #endif
2030 printf("/%s", c);
2031
2032 } else
2033 printf("signal=%s", signal_to_string(i->exit_status));
2034 printf(")");
2035 }
2036 }
2037
2038 if (i->main_pid > 0 && i->control_pid > 0)
2039 printf(";");
2040
2041 if (i->control_pid > 0) {
2042 char *t = NULL;
2043
2044 printf(" Control: %u", (unsigned) i->control_pid);
2045
2046 get_process_name(i->control_pid, &t);
2047 if (t) {
2048 printf(" (%s)", t);
2049 free(t);
2050 }
2051 }
2052
2053 printf("\n");
2054 }
2055
2056 if (i->status_text)
2057 printf("\t Status: \"%s\"\n", i->status_text);
2058
2059 if (i->default_control_group) {
2060 unsigned c;
2061
2062 printf("\t CGroup: %s\n", i->default_control_group);
2063
2064 if ((c = columns()) > 18)
2065 c -= 18;
2066 else
2067 c = 0;
2068
2069 show_cgroup_by_path(i->default_control_group, "\t\t ", c);
2070 }
2071
2072 if (i->need_daemon_reload)
2073 printf("\n%sWarning:%s Unit file changed on disk, 'systemctl %s daemon-reload' recommended.\n",
2074 ansi_highlight(true),
2075 ansi_highlight(false),
2076 arg_user ? "--user" : "--system");
2077 }
2078
2079 static int status_property(const char *name, DBusMessageIter *iter, UnitStatusInfo *i) {
2080
2081 switch (dbus_message_iter_get_arg_type(iter)) {
2082
2083 case DBUS_TYPE_STRING: {
2084 const char *s;
2085
2086 dbus_message_iter_get_basic(iter, &s);
2087
2088 if (s[0]) {
2089 if (streq(name, "Id"))
2090 i->id = s;
2091 else if (streq(name, "LoadState"))
2092 i->load_state = s;
2093 else if (streq(name, "ActiveState"))
2094 i->active_state = s;
2095 else if (streq(name, "SubState"))
2096 i->sub_state = s;
2097 else if (streq(name, "Description"))
2098 i->description = s;
2099 else if (streq(name, "FragmentPath"))
2100 i->path = s;
2101 #ifdef HAVE_SYSV_COMPAT
2102 else if (streq(name, "SysVPath")) {
2103 i->is_sysv = true;
2104 i->path = s;
2105 }
2106 #endif
2107 else if (streq(name, "DefaultControlGroup"))
2108 i->default_control_group = s;
2109 else if (streq(name, "StatusText"))
2110 i->status_text = s;
2111 else if (streq(name, "SysFSPath"))
2112 i->sysfs_path = s;
2113 else if (streq(name, "Where"))
2114 i->where = s;
2115 else if (streq(name, "What"))
2116 i->what = s;
2117 else if (streq(name, "Following"))
2118 i->following = s;
2119 }
2120
2121 break;
2122 }
2123
2124 case DBUS_TYPE_BOOLEAN: {
2125 dbus_bool_t b;
2126
2127 dbus_message_iter_get_basic(iter, &b);
2128
2129 if (streq(name, "Accept"))
2130 i->accept = b;
2131 else if (streq(name, "NeedDaemonReload"))
2132 i->need_daemon_reload = b;
2133 else if (streq(name, "ConditionResult"))
2134 i->condition_result = b;
2135
2136 break;
2137 }
2138
2139 case DBUS_TYPE_UINT32: {
2140 uint32_t u;
2141
2142 dbus_message_iter_get_basic(iter, &u);
2143
2144 if (streq(name, "MainPID")) {
2145 if (u > 0) {
2146 i->main_pid = (pid_t) u;
2147 i->running = true;
2148 }
2149 } else if (streq(name, "ControlPID"))
2150 i->control_pid = (pid_t) u;
2151 else if (streq(name, "ExecMainPID")) {
2152 if (u > 0)
2153 i->main_pid = (pid_t) u;
2154 } else if (streq(name, "NAccepted"))
2155 i->n_accepted = u;
2156 else if (streq(name, "NConnections"))
2157 i->n_connections = u;
2158
2159 break;
2160 }
2161
2162 case DBUS_TYPE_INT32: {
2163 int32_t j;
2164
2165 dbus_message_iter_get_basic(iter, &j);
2166
2167 if (streq(name, "ExecMainCode"))
2168 i->exit_code = (int) j;
2169 else if (streq(name, "ExecMainStatus"))
2170 i->exit_status = (int) j;
2171
2172 break;
2173 }
2174
2175 case DBUS_TYPE_UINT64: {
2176 uint64_t u;
2177
2178 dbus_message_iter_get_basic(iter, &u);
2179
2180 if (streq(name, "ExecMainStartTimestamp"))
2181 i->start_timestamp = (usec_t) u;
2182 else if (streq(name, "ExecMainExitTimestamp"))
2183 i->exit_timestamp = (usec_t) u;
2184 else if (streq(name, "ActiveEnterTimestamp"))
2185 i->active_enter_timestamp = (usec_t) u;
2186 else if (streq(name, "InactiveEnterTimestamp"))
2187 i->inactive_enter_timestamp = (usec_t) u;
2188 else if (streq(name, "InactiveExitTimestamp"))
2189 i->inactive_exit_timestamp = (usec_t) u;
2190 else if (streq(name, "ActiveExitTimestamp"))
2191 i->active_exit_timestamp = (usec_t) u;
2192 else if (streq(name, "ConditionTimestamp"))
2193 i->condition_timestamp = (usec_t) u;
2194
2195 break;
2196 }
2197
2198 case DBUS_TYPE_ARRAY: {
2199
2200 if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT &&
2201 startswith(name, "Exec")) {
2202 DBusMessageIter sub;
2203
2204 dbus_message_iter_recurse(iter, &sub);
2205 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2206 ExecStatusInfo *info;
2207 int r;
2208
2209 if (!(info = new0(ExecStatusInfo, 1)))
2210 return -ENOMEM;
2211
2212 if (!(info->name = strdup(name))) {
2213 free(info);
2214 return -ENOMEM;
2215 }
2216
2217 if ((r = exec_status_info_deserialize(&sub, info)) < 0) {
2218 free(info);
2219 return r;
2220 }
2221
2222 LIST_PREPEND(ExecStatusInfo, exec, i->exec, info);
2223
2224 dbus_message_iter_next(&sub);
2225 }
2226 }
2227
2228 break;
2229 }
2230 }
2231
2232 return 0;
2233 }
2234
2235 static int print_property(const char *name, DBusMessageIter *iter) {
2236 assert(name);
2237 assert(iter);
2238
2239 /* This is a low-level property printer, see
2240 * print_status_info() for the nicer output */
2241
2242 if (arg_property && !strv_find(arg_property, name))
2243 return 0;
2244
2245 switch (dbus_message_iter_get_arg_type(iter)) {
2246
2247 case DBUS_TYPE_STRING: {
2248 const char *s;
2249 dbus_message_iter_get_basic(iter, &s);
2250
2251 if (arg_all || s[0])
2252 printf("%s=%s\n", name, s);
2253
2254 return 0;
2255 }
2256
2257 case DBUS_TYPE_BOOLEAN: {
2258 dbus_bool_t b;
2259 dbus_message_iter_get_basic(iter, &b);
2260 printf("%s=%s\n", name, yes_no(b));
2261
2262 return 0;
2263 }
2264
2265 case DBUS_TYPE_UINT64: {
2266 uint64_t u;
2267 dbus_message_iter_get_basic(iter, &u);
2268
2269 /* Yes, heuristics! But we can change this check
2270 * should it turn out to not be sufficient */
2271
2272 if (strstr(name, "Timestamp")) {
2273 char timestamp[FORMAT_TIMESTAMP_MAX], *t;
2274
2275 if ((t = format_timestamp(timestamp, sizeof(timestamp), u)) || arg_all)
2276 printf("%s=%s\n", name, strempty(t));
2277 } else if (strstr(name, "USec")) {
2278 char timespan[FORMAT_TIMESPAN_MAX];
2279
2280 printf("%s=%s\n", name, format_timespan(timespan, sizeof(timespan), u));
2281 } else
2282 printf("%s=%llu\n", name, (unsigned long long) u);
2283
2284 return 0;
2285 }
2286
2287 case DBUS_TYPE_UINT32: {
2288 uint32_t u;
2289 dbus_message_iter_get_basic(iter, &u);
2290
2291 if (strstr(name, "UMask") || strstr(name, "Mode"))
2292 printf("%s=%04o\n", name, u);
2293 else
2294 printf("%s=%u\n", name, (unsigned) u);
2295
2296 return 0;
2297 }
2298
2299 case DBUS_TYPE_INT32: {
2300 int32_t i;
2301 dbus_message_iter_get_basic(iter, &i);
2302
2303 printf("%s=%i\n", name, (int) i);
2304 return 0;
2305 }
2306
2307 case DBUS_TYPE_DOUBLE: {
2308 double d;
2309 dbus_message_iter_get_basic(iter, &d);
2310
2311 printf("%s=%g\n", name, d);
2312 return 0;
2313 }
2314
2315 case DBUS_TYPE_STRUCT: {
2316 DBusMessageIter sub;
2317 dbus_message_iter_recurse(iter, &sub);
2318
2319 if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_UINT32 && streq(name, "Job")) {
2320 uint32_t u;
2321
2322 dbus_message_iter_get_basic(&sub, &u);
2323
2324 if (u)
2325 printf("%s=%u\n", name, (unsigned) u);
2326 else if (arg_all)
2327 printf("%s=\n", name);
2328
2329 return 0;
2330 } else if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING && streq(name, "Unit")) {
2331 const char *s;
2332
2333 dbus_message_iter_get_basic(&sub, &s);
2334
2335 if (arg_all || s[0])
2336 printf("%s=%s\n", name, s);
2337
2338 return 0;
2339 }
2340
2341 break;
2342 }
2343
2344 case DBUS_TYPE_ARRAY:
2345
2346 if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRING) {
2347 DBusMessageIter sub;
2348 bool space = false;
2349
2350 dbus_message_iter_recurse(iter, &sub);
2351 if (arg_all ||
2352 dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
2353 printf("%s=", name);
2354
2355 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
2356 const char *s;
2357
2358 assert(dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING);
2359 dbus_message_iter_get_basic(&sub, &s);
2360 printf("%s%s", space ? " " : "", s);
2361
2362 space = true;
2363 dbus_message_iter_next(&sub);
2364 }
2365
2366 puts("");
2367 }
2368
2369 return 0;
2370
2371 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_BYTE) {
2372 DBusMessageIter sub;
2373
2374 dbus_message_iter_recurse(iter, &sub);
2375 if (arg_all ||
2376 dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
2377 printf("%s=", name);
2378
2379 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
2380 uint8_t u;
2381
2382 assert(dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_BYTE);
2383 dbus_message_iter_get_basic(&sub, &u);
2384 printf("%02x", u);
2385
2386 dbus_message_iter_next(&sub);
2387 }
2388
2389 puts("");
2390 }
2391
2392 return 0;
2393
2394 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "EnvironmentFiles")) {
2395 DBusMessageIter sub, sub2;
2396
2397 dbus_message_iter_recurse(iter, &sub);
2398 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2399 const char *path;
2400 dbus_bool_t ignore;
2401
2402 dbus_message_iter_recurse(&sub, &sub2);
2403
2404 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, true) >= 0 &&
2405 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_BOOLEAN, &ignore, false) >= 0)
2406 printf("EnvironmentFile=%s (ignore=%s)\n", path, yes_no(ignore));
2407
2408 dbus_message_iter_next(&sub);
2409 }
2410
2411 return 0;
2412
2413 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Paths")) {
2414 DBusMessageIter sub, sub2;
2415
2416 dbus_message_iter_recurse(iter, &sub);
2417 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2418 const char *type, *path;
2419
2420 dbus_message_iter_recurse(&sub, &sub2);
2421
2422 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) >= 0 &&
2423 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, false) >= 0)
2424 printf("%s=%s\n", type, path);
2425
2426 dbus_message_iter_next(&sub);
2427 }
2428
2429 return 0;
2430
2431 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Timers")) {
2432 DBusMessageIter sub, sub2;
2433
2434 dbus_message_iter_recurse(iter, &sub);
2435 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2436 const char *base;
2437 uint64_t value, next_elapse;
2438
2439 dbus_message_iter_recurse(&sub, &sub2);
2440
2441 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &base, true) >= 0 &&
2442 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &value, true) >= 0 &&
2443 bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &next_elapse, false) >= 0) {
2444 char timespan1[FORMAT_TIMESPAN_MAX], timespan2[FORMAT_TIMESPAN_MAX];
2445
2446 printf("%s={ value=%s ; next_elapse=%s }\n",
2447 base,
2448 format_timespan(timespan1, sizeof(timespan1), value),
2449 format_timespan(timespan2, sizeof(timespan2), next_elapse));
2450 }
2451
2452 dbus_message_iter_next(&sub);
2453 }
2454
2455 return 0;
2456
2457 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && startswith(name, "Exec")) {
2458 DBusMessageIter sub;
2459
2460 dbus_message_iter_recurse(iter, &sub);
2461 while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2462 ExecStatusInfo info;
2463
2464 zero(info);
2465 if (exec_status_info_deserialize(&sub, &info) >= 0) {
2466 char timestamp1[FORMAT_TIMESTAMP_MAX], timestamp2[FORMAT_TIMESTAMP_MAX];
2467 char *t;
2468
2469 t = strv_join(info.argv, " ");
2470
2471 printf("%s={ path=%s ; argv[]=%s ; ignore=%s ; start_time=[%s] ; stop_time=[%s] ; pid=%u ; code=%s ; status=%i%s%s }\n",
2472 name,
2473 strna(info.path),
2474 strna(t),
2475 yes_no(info.ignore),
2476 strna(format_timestamp(timestamp1, sizeof(timestamp1), info.start_timestamp)),
2477 strna(format_timestamp(timestamp2, sizeof(timestamp2), info.exit_timestamp)),
2478 (unsigned) info. pid,
2479 sigchld_code_to_string(info.code),
2480 info.status,
2481 info.code == CLD_EXITED ? "" : "/",
2482 strempty(info.code == CLD_EXITED ? NULL : signal_to_string(info.status)));
2483
2484 free(t);
2485 }
2486
2487 free(info.path);
2488 strv_free(info.argv);
2489
2490 dbus_message_iter_next(&sub);
2491 }
2492
2493 return 0;
2494 }
2495
2496 break;
2497 }
2498
2499 if (arg_all)
2500 printf("%s=[unprintable]\n", name);
2501
2502 return 0;
2503 }
2504
2505 static int show_one(const char *verb, DBusConnection *bus, const char *path, bool show_properties, bool *new_line) {
2506 DBusMessage *m = NULL, *reply = NULL;
2507 const char *interface = "";
2508 int r;
2509 DBusError error;
2510 DBusMessageIter iter, sub, sub2, sub3;
2511 UnitStatusInfo info;
2512 ExecStatusInfo *p;
2513
2514 assert(bus);
2515 assert(path);
2516 assert(new_line);
2517
2518 zero(info);
2519 dbus_error_init(&error);
2520
2521 if (!(m = dbus_message_new_method_call(
2522 "org.freedesktop.systemd1",
2523 path,
2524 "org.freedesktop.DBus.Properties",
2525 "GetAll"))) {
2526 log_error("Could not allocate message.");
2527 r = -ENOMEM;
2528 goto finish;
2529 }
2530
2531 if (!dbus_message_append_args(m,
2532 DBUS_TYPE_STRING, &interface,
2533 DBUS_TYPE_INVALID)) {
2534 log_error("Could not append arguments to message.");
2535 r = -ENOMEM;
2536 goto finish;
2537 }
2538
2539 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2540 log_error("Failed to issue method call: %s", bus_error_message(&error));
2541 r = -EIO;
2542 goto finish;
2543 }
2544
2545 if (!dbus_message_iter_init(reply, &iter) ||
2546 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
2547 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_DICT_ENTRY) {
2548 log_error("Failed to parse reply.");
2549 r = -EIO;
2550 goto finish;
2551 }
2552
2553 dbus_message_iter_recurse(&iter, &sub);
2554
2555 if (*new_line)
2556 printf("\n");
2557
2558 *new_line = true;
2559
2560 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
2561 const char *name;
2562
2563 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_DICT_ENTRY) {
2564 log_error("Failed to parse reply.");
2565 r = -EIO;
2566 goto finish;
2567 }
2568
2569 dbus_message_iter_recurse(&sub, &sub2);
2570
2571 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0) {
2572 log_error("Failed to parse reply.");
2573 r = -EIO;
2574 goto finish;
2575 }
2576
2577 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT) {
2578 log_error("Failed to parse reply.");
2579 r = -EIO;
2580 goto finish;
2581 }
2582
2583 dbus_message_iter_recurse(&sub2, &sub3);
2584
2585 if (show_properties)
2586 r = print_property(name, &sub3);
2587 else
2588 r = status_property(name, &sub3, &info);
2589
2590 if (r < 0) {
2591 log_error("Failed to parse reply.");
2592 r = -EIO;
2593 goto finish;
2594 }
2595
2596 dbus_message_iter_next(&sub);
2597 }
2598
2599 r = 0;
2600
2601 if (!show_properties)
2602 print_status_info(&info);
2603
2604 if (!streq_ptr(info.active_state, "active") &&
2605 !streq_ptr(info.active_state, "reloading") &&
2606 streq(verb, "status"))
2607 /* According to LSB: "program not running" */
2608 r = 3;
2609
2610 while ((p = info.exec)) {
2611 LIST_REMOVE(ExecStatusInfo, exec, info.exec, p);
2612 exec_status_info_free(p);
2613 }
2614
2615 finish:
2616 if (m)
2617 dbus_message_unref(m);
2618
2619 if (reply)
2620 dbus_message_unref(reply);
2621
2622 dbus_error_free(&error);
2623
2624 return r;
2625 }
2626
2627 static int show(DBusConnection *bus, char **args, unsigned n) {
2628 DBusMessage *m = NULL, *reply = NULL;
2629 int r, ret = 0;
2630 DBusError error;
2631 unsigned i;
2632 bool show_properties, new_line = false;
2633
2634 assert(bus);
2635 assert(args);
2636
2637 dbus_error_init(&error);
2638
2639 show_properties = !streq(args[0], "status");
2640
2641 if (show_properties)
2642 pager_open();
2643
2644 if (show_properties && n <= 1) {
2645 /* If not argument is specified inspect the manager
2646 * itself */
2647
2648 ret = show_one(args[0], bus, "/org/freedesktop/systemd1", show_properties, &new_line);
2649 goto finish;
2650 }
2651
2652 for (i = 1; i < n; i++) {
2653 const char *path = NULL;
2654 uint32_t id;
2655
2656 if (safe_atou32(args[i], &id) < 0) {
2657
2658 /* Interpret as unit name */
2659
2660 if (!(m = dbus_message_new_method_call(
2661 "org.freedesktop.systemd1",
2662 "/org/freedesktop/systemd1",
2663 "org.freedesktop.systemd1.Manager",
2664 "LoadUnit"))) {
2665 log_error("Could not allocate message.");
2666 ret = -ENOMEM;
2667 goto finish;
2668 }
2669
2670 if (!dbus_message_append_args(m,
2671 DBUS_TYPE_STRING, &args[i],
2672 DBUS_TYPE_INVALID)) {
2673 log_error("Could not append arguments to message.");
2674 ret = -ENOMEM;
2675 goto finish;
2676 }
2677
2678 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2679
2680 if (!dbus_error_has_name(&error, DBUS_ERROR_ACCESS_DENIED)) {
2681 log_error("Failed to issue method call: %s", bus_error_message(&error));
2682 ret = -EIO;
2683 goto finish;
2684 }
2685
2686 dbus_error_free(&error);
2687
2688 dbus_message_unref(m);
2689 if (!(m = dbus_message_new_method_call(
2690 "org.freedesktop.systemd1",
2691 "/org/freedesktop/systemd1",
2692 "org.freedesktop.systemd1.Manager",
2693 "GetUnit"))) {
2694 log_error("Could not allocate message.");
2695 ret = -ENOMEM;
2696 goto finish;
2697 }
2698
2699 if (!dbus_message_append_args(m,
2700 DBUS_TYPE_STRING, &args[i],
2701 DBUS_TYPE_INVALID)) {
2702 log_error("Could not append arguments to message.");
2703 ret = -ENOMEM;
2704 goto finish;
2705 }
2706
2707 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2708 log_error("Failed to issue method call: %s", bus_error_message(&error));
2709
2710 if (dbus_error_has_name(&error, BUS_ERROR_NO_SUCH_UNIT))
2711 ret = 4; /* According to LSB: "program or service status is unknown" */
2712 else
2713 ret = -EIO;
2714 goto finish;
2715 }
2716 }
2717
2718 } else if (show_properties) {
2719
2720 /* Interpret as job id */
2721
2722 if (!(m = dbus_message_new_method_call(
2723 "org.freedesktop.systemd1",
2724 "/org/freedesktop/systemd1",
2725 "org.freedesktop.systemd1.Manager",
2726 "GetJob"))) {
2727 log_error("Could not allocate message.");
2728 ret = -ENOMEM;
2729 goto finish;
2730 }
2731
2732 if (!dbus_message_append_args(m,
2733 DBUS_TYPE_UINT32, &id,
2734 DBUS_TYPE_INVALID)) {
2735 log_error("Could not append arguments to message.");
2736 ret = -ENOMEM;
2737 goto finish;
2738 }
2739
2740 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2741 log_error("Failed to issue method call: %s", bus_error_message(&error));
2742 ret = -EIO;
2743 goto finish;
2744 }
2745 } else {
2746
2747 /* Interpret as PID */
2748
2749 if (!(m = dbus_message_new_method_call(
2750 "org.freedesktop.systemd1",
2751 "/org/freedesktop/systemd1",
2752 "org.freedesktop.systemd1.Manager",
2753 "GetUnitByPID"))) {
2754 log_error("Could not allocate message.");
2755 ret = -ENOMEM;
2756 goto finish;
2757 }
2758
2759 if (!dbus_message_append_args(m,
2760 DBUS_TYPE_UINT32, &id,
2761 DBUS_TYPE_INVALID)) {
2762 log_error("Could not append arguments to message.");
2763 ret = -ENOMEM;
2764 goto finish;
2765 }
2766
2767 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2768 log_error("Failed to issue method call: %s", bus_error_message(&error));
2769 ret = -EIO;
2770 goto finish;
2771 }
2772 }
2773
2774 if (!dbus_message_get_args(reply, &error,
2775 DBUS_TYPE_OBJECT_PATH, &path,
2776 DBUS_TYPE_INVALID)) {
2777 log_error("Failed to parse reply: %s", bus_error_message(&error));
2778 ret = -EIO;
2779 goto finish;
2780 }
2781
2782 if ((r = show_one(args[0], bus, path, show_properties, &new_line)) != 0)
2783 ret = r;
2784
2785 dbus_message_unref(m);
2786 dbus_message_unref(reply);
2787 m = reply = NULL;
2788 }
2789
2790 finish:
2791 if (m)
2792 dbus_message_unref(m);
2793
2794 if (reply)
2795 dbus_message_unref(reply);
2796
2797 dbus_error_free(&error);
2798
2799 return ret;
2800 }
2801
2802 static DBusHandlerResult monitor_filter(DBusConnection *connection, DBusMessage *message, void *data) {
2803 DBusError error;
2804 DBusMessage *m = NULL, *reply = NULL;
2805
2806 assert(connection);
2807 assert(message);
2808
2809 dbus_error_init(&error);
2810
2811 log_debug("Got D-Bus request: %s.%s() on %s",
2812 dbus_message_get_interface(message),
2813 dbus_message_get_member(message),
2814 dbus_message_get_path(message));
2815
2816 if (dbus_message_is_signal(message, DBUS_INTERFACE_LOCAL, "Disconnected")) {
2817 log_error("Warning! D-Bus connection terminated.");
2818 dbus_connection_close(connection);
2819
2820 } else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "UnitNew") ||
2821 dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "UnitRemoved")) {
2822 const char *id, *path;
2823
2824 if (!dbus_message_get_args(message, &error,
2825 DBUS_TYPE_STRING, &id,
2826 DBUS_TYPE_OBJECT_PATH, &path,
2827 DBUS_TYPE_INVALID))
2828 log_error("Failed to parse message: %s", bus_error_message(&error));
2829 else if (streq(dbus_message_get_member(message), "UnitNew"))
2830 printf("Unit %s added.\n", id);
2831 else
2832 printf("Unit %s removed.\n", id);
2833
2834 } else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "JobNew") ||
2835 dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "JobRemoved")) {
2836 uint32_t id;
2837 const char *path, *result;
2838
2839 if (!dbus_message_get_args(message, &error,
2840 DBUS_TYPE_UINT32, &id,
2841 DBUS_TYPE_OBJECT_PATH, &path,
2842 DBUS_TYPE_STRING, &result,
2843 DBUS_TYPE_INVALID))
2844 log_error("Failed to parse message: %s", bus_error_message(&error));
2845 else if (streq(dbus_message_get_member(message), "JobNew"))
2846 printf("Job %u added.\n", id);
2847 else
2848 printf("Job %u removed.\n", id);
2849
2850
2851 } else if (dbus_message_is_signal(message, "org.freedesktop.DBus.Properties", "PropertiesChanged")) {
2852
2853 const char *path, *interface, *property = "Id";
2854 DBusMessageIter iter, sub;
2855
2856 path = dbus_message_get_path(message);
2857
2858 if (!dbus_message_get_args(message, &error,
2859 DBUS_TYPE_STRING, &interface,
2860 DBUS_TYPE_INVALID)) {
2861 log_error("Failed to parse message: %s", bus_error_message(&error));
2862 goto finish;
2863 }
2864
2865 if (!streq(interface, "org.freedesktop.systemd1.Job") &&
2866 !streq(interface, "org.freedesktop.systemd1.Unit"))
2867 goto finish;
2868
2869 if (!(m = dbus_message_new_method_call(
2870 "org.freedesktop.systemd1",
2871 path,
2872 "org.freedesktop.DBus.Properties",
2873 "Get"))) {
2874 log_error("Could not allocate message.");
2875 goto oom;
2876 }
2877
2878 if (!dbus_message_append_args(m,
2879 DBUS_TYPE_STRING, &interface,
2880 DBUS_TYPE_STRING, &property,
2881 DBUS_TYPE_INVALID)) {
2882 log_error("Could not append arguments to message.");
2883 goto finish;
2884 }
2885
2886 if (!(reply = dbus_connection_send_with_reply_and_block(connection, m, -1, &error))) {
2887 log_error("Failed to issue method call: %s", bus_error_message(&error));
2888 goto finish;
2889 }
2890
2891 if (!dbus_message_iter_init(reply, &iter) ||
2892 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
2893 log_error("Failed to parse reply.");
2894 goto finish;
2895 }
2896
2897 dbus_message_iter_recurse(&iter, &sub);
2898
2899 if (streq(interface, "org.freedesktop.systemd1.Unit")) {
2900 const char *id;
2901
2902 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
2903 log_error("Failed to parse reply.");
2904 goto finish;
2905 }
2906
2907 dbus_message_iter_get_basic(&sub, &id);
2908 printf("Unit %s changed.\n", id);
2909 } else {
2910 uint32_t id;
2911
2912 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_UINT32) {
2913 log_error("Failed to parse reply.");
2914 goto finish;
2915 }
2916
2917 dbus_message_iter_get_basic(&sub, &id);
2918 printf("Job %u changed.\n", id);
2919 }
2920 }
2921
2922 finish:
2923 if (m)
2924 dbus_message_unref(m);
2925
2926 if (reply)
2927 dbus_message_unref(reply);
2928
2929 dbus_error_free(&error);
2930 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
2931
2932 oom:
2933 if (m)
2934 dbus_message_unref(m);
2935
2936 if (reply)
2937 dbus_message_unref(reply);
2938
2939 dbus_error_free(&error);
2940 return DBUS_HANDLER_RESULT_NEED_MEMORY;
2941 }
2942
2943 static int monitor(DBusConnection *bus, char **args, unsigned n) {
2944 DBusMessage *m = NULL, *reply = NULL;
2945 DBusError error;
2946 int r;
2947
2948 dbus_error_init(&error);
2949
2950 if (!private_bus) {
2951 dbus_bus_add_match(bus,
2952 "type='signal',"
2953 "sender='org.freedesktop.systemd1',"
2954 "interface='org.freedesktop.systemd1.Manager',"
2955 "path='/org/freedesktop/systemd1'",
2956 &error);
2957
2958 if (dbus_error_is_set(&error)) {
2959 log_error("Failed to add match: %s", bus_error_message(&error));
2960 r = -EIO;
2961 goto finish;
2962 }
2963
2964 dbus_bus_add_match(bus,
2965 "type='signal',"
2966 "sender='org.freedesktop.systemd1',"
2967 "interface='org.freedesktop.DBus.Properties',"
2968 "member='PropertiesChanged'",
2969 &error);
2970
2971 if (dbus_error_is_set(&error)) {
2972 log_error("Failed to add match: %s", bus_error_message(&error));
2973 r = -EIO;
2974 goto finish;
2975 }
2976 }
2977
2978 if (!dbus_connection_add_filter(bus, monitor_filter, NULL, NULL)) {
2979 log_error("Failed to add filter.");
2980 r = -ENOMEM;
2981 goto finish;
2982 }
2983
2984 if (!(m = dbus_message_new_method_call(
2985 "org.freedesktop.systemd1",
2986 "/org/freedesktop/systemd1",
2987 "org.freedesktop.systemd1.Manager",
2988 "Subscribe"))) {
2989 log_error("Could not allocate message.");
2990 r = -ENOMEM;
2991 goto finish;
2992 }
2993
2994 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2995 log_error("Failed to issue method call: %s", bus_error_message(&error));
2996 r = -EIO;
2997 goto finish;
2998 }
2999
3000 while (dbus_connection_read_write_dispatch(bus, -1))
3001 ;
3002
3003 r = 0;
3004
3005 finish:
3006
3007 /* This is slightly dirty, since we don't undo the filter or the matches. */
3008
3009 if (m)
3010 dbus_message_unref(m);
3011
3012 if (reply)
3013 dbus_message_unref(reply);
3014
3015 dbus_error_free(&error);
3016
3017 return r;
3018 }
3019
3020 static int dump(DBusConnection *bus, char **args, unsigned n) {
3021 DBusMessage *m = NULL, *reply = NULL;
3022 DBusError error;
3023 int r;
3024 const char *text;
3025
3026 dbus_error_init(&error);
3027
3028 pager_open();
3029
3030 if (!(m = dbus_message_new_method_call(
3031 "org.freedesktop.systemd1",
3032 "/org/freedesktop/systemd1",
3033 "org.freedesktop.systemd1.Manager",
3034 "Dump"))) {
3035 log_error("Could not allocate message.");
3036 return -ENOMEM;
3037 }
3038
3039 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3040 log_error("Failed to issue method call: %s", bus_error_message(&error));
3041 r = -EIO;
3042 goto finish;
3043 }
3044
3045 if (!dbus_message_get_args(reply, &error,
3046 DBUS_TYPE_STRING, &text,
3047 DBUS_TYPE_INVALID)) {
3048 log_error("Failed to parse reply: %s", bus_error_message(&error));
3049 r = -EIO;
3050 goto finish;
3051 }
3052
3053 fputs(text, stdout);
3054
3055 r = 0;
3056
3057 finish:
3058 if (m)
3059 dbus_message_unref(m);
3060
3061 if (reply)
3062 dbus_message_unref(reply);
3063
3064 dbus_error_free(&error);
3065
3066 return r;
3067 }
3068
3069 static int snapshot(DBusConnection *bus, char **args, unsigned n) {
3070 DBusMessage *m = NULL, *reply = NULL;
3071 DBusError error;
3072 int r;
3073 const char *name = "", *path, *id;
3074 dbus_bool_t cleanup = FALSE;
3075 DBusMessageIter iter, sub;
3076 const char
3077 *interface = "org.freedesktop.systemd1.Unit",
3078 *property = "Id";
3079
3080 dbus_error_init(&error);
3081
3082 if (!(m = dbus_message_new_method_call(
3083 "org.freedesktop.systemd1",
3084 "/org/freedesktop/systemd1",
3085 "org.freedesktop.systemd1.Manager",
3086 "CreateSnapshot"))) {
3087 log_error("Could not allocate message.");
3088 return -ENOMEM;
3089 }
3090
3091 if (n > 1)
3092 name = args[1];
3093
3094 if (!dbus_message_append_args(m,
3095 DBUS_TYPE_STRING, &name,
3096 DBUS_TYPE_BOOLEAN, &cleanup,
3097 DBUS_TYPE_INVALID)) {
3098 log_error("Could not append arguments to message.");
3099 r = -ENOMEM;
3100 goto finish;
3101 }
3102
3103 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3104 log_error("Failed to issue method call: %s", bus_error_message(&error));
3105 r = -EIO;
3106 goto finish;
3107 }
3108
3109 if (!dbus_message_get_args(reply, &error,
3110 DBUS_TYPE_OBJECT_PATH, &path,
3111 DBUS_TYPE_INVALID)) {
3112 log_error("Failed to parse reply: %s", bus_error_message(&error));
3113 r = -EIO;
3114 goto finish;
3115 }
3116
3117 dbus_message_unref(m);
3118 if (!(m = dbus_message_new_method_call(
3119 "org.freedesktop.systemd1",
3120 path,
3121 "org.freedesktop.DBus.Properties",
3122 "Get"))) {
3123 log_error("Could not allocate message.");
3124 return -ENOMEM;
3125 }
3126
3127 if (!dbus_message_append_args(m,
3128 DBUS_TYPE_STRING, &interface,
3129 DBUS_TYPE_STRING, &property,
3130 DBUS_TYPE_INVALID)) {
3131 log_error("Could not append arguments to message.");
3132 r = -ENOMEM;
3133 goto finish;
3134 }
3135
3136 dbus_message_unref(reply);
3137 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3138 log_error("Failed to issue method call: %s", bus_error_message(&error));
3139 r = -EIO;
3140 goto finish;
3141 }
3142
3143 if (!dbus_message_iter_init(reply, &iter) ||
3144 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
3145 log_error("Failed to parse reply.");
3146 r = -EIO;
3147 goto finish;
3148 }
3149
3150 dbus_message_iter_recurse(&iter, &sub);
3151
3152 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
3153 log_error("Failed to parse reply.");
3154 r = -EIO;
3155 goto finish;
3156 }
3157
3158 dbus_message_iter_get_basic(&sub, &id);
3159
3160 if (!arg_quiet)
3161 puts(id);
3162 r = 0;
3163
3164 finish:
3165 if (m)
3166 dbus_message_unref(m);
3167
3168 if (reply)
3169 dbus_message_unref(reply);
3170
3171 dbus_error_free(&error);
3172
3173 return r;
3174 }
3175
3176 static int delete_snapshot(DBusConnection *bus, char **args, unsigned n) {
3177 DBusMessage *m = NULL, *reply = NULL;
3178 int r;
3179 DBusError error;
3180 unsigned i;
3181
3182 assert(bus);
3183 assert(args);
3184
3185 dbus_error_init(&error);
3186
3187 for (i = 1; i < n; i++) {
3188 const char *path = NULL;
3189
3190 if (!(m = dbus_message_new_method_call(
3191 "org.freedesktop.systemd1",
3192 "/org/freedesktop/systemd1",
3193 "org.freedesktop.systemd1.Manager",
3194 "GetUnit"))) {
3195 log_error("Could not allocate message.");
3196 r = -ENOMEM;
3197 goto finish;
3198 }
3199
3200 if (!dbus_message_append_args(m,
3201 DBUS_TYPE_STRING, &args[i],
3202 DBUS_TYPE_INVALID)) {
3203 log_error("Could not append arguments to message.");
3204 r = -ENOMEM;
3205 goto finish;
3206 }
3207
3208 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3209 log_error("Failed to issue method call: %s", bus_error_message(&error));
3210 r = -EIO;
3211 goto finish;
3212 }
3213
3214 if (!dbus_message_get_args(reply, &error,
3215 DBUS_TYPE_OBJECT_PATH, &path,
3216 DBUS_TYPE_INVALID)) {
3217 log_error("Failed to parse reply: %s", bus_error_message(&error));
3218 r = -EIO;
3219 goto finish;
3220 }
3221
3222 dbus_message_unref(m);
3223 if (!(m = dbus_message_new_method_call(
3224 "org.freedesktop.systemd1",
3225 path,
3226 "org.freedesktop.systemd1.Snapshot",
3227 "Remove"))) {
3228 log_error("Could not allocate message.");
3229 r = -ENOMEM;
3230 goto finish;
3231 }
3232
3233 dbus_message_unref(reply);
3234 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3235 log_error("Failed to issue method call: %s", bus_error_message(&error));
3236 r = -EIO;
3237 goto finish;
3238 }
3239
3240 dbus_message_unref(m);
3241 dbus_message_unref(reply);
3242 m = reply = NULL;
3243 }
3244
3245 r = 0;
3246
3247 finish:
3248 if (m)
3249 dbus_message_unref(m);
3250
3251 if (reply)
3252 dbus_message_unref(reply);
3253
3254 dbus_error_free(&error);
3255
3256 return r;
3257 }
3258
3259 static int daemon_reload(DBusConnection *bus, char **args, unsigned n) {
3260 DBusMessage *m = NULL, *reply = NULL;
3261 DBusError error;
3262 int r;
3263 const char *method;
3264
3265 dbus_error_init(&error);
3266
3267 if (arg_action == ACTION_RELOAD)
3268 method = "Reload";
3269 else if (arg_action == ACTION_REEXEC)
3270 method = "Reexecute";
3271 else {
3272 assert(arg_action == ACTION_SYSTEMCTL);
3273
3274 method =
3275 streq(args[0], "clear-jobs") ||
3276 streq(args[0], "cancel") ? "ClearJobs" :
3277 streq(args[0], "daemon-reexec") ? "Reexecute" :
3278 streq(args[0], "reset-failed") ? "ResetFailed" :
3279 streq(args[0], "halt") ? "Halt" :
3280 streq(args[0], "poweroff") ? "PowerOff" :
3281 streq(args[0], "reboot") ? "Reboot" :
3282 streq(args[0], "kexec") ? "KExec" :
3283 streq(args[0], "exit") ? "Exit" :
3284 /* "daemon-reload" */ "Reload";
3285 }
3286
3287 if (!(m = dbus_message_new_method_call(
3288 "org.freedesktop.systemd1",
3289 "/org/freedesktop/systemd1",
3290 "org.freedesktop.systemd1.Manager",
3291 method))) {
3292 log_error("Could not allocate message.");
3293 return -ENOMEM;
3294 }
3295
3296 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3297
3298 if (arg_action != ACTION_SYSTEMCTL && error_is_no_service(&error)) {
3299 /* There's always a fallback possible for
3300 * legacy actions. */
3301 r = -EADDRNOTAVAIL;
3302 goto finish;
3303 }
3304
3305 log_error("Failed to issue method call: %s", bus_error_message(&error));
3306 r = -EIO;
3307 goto finish;
3308 }
3309
3310 r = 0;
3311
3312 finish:
3313 if (m)
3314 dbus_message_unref(m);
3315
3316 if (reply)
3317 dbus_message_unref(reply);
3318
3319 dbus_error_free(&error);
3320
3321 return r;
3322 }
3323
3324 static int reset_failed(DBusConnection *bus, char **args, unsigned n) {
3325 DBusMessage *m = NULL, *reply = NULL;
3326 unsigned i;
3327 int r;
3328 DBusError error;
3329
3330 assert(bus);
3331 dbus_error_init(&error);
3332
3333 if (n <= 1)
3334 return daemon_reload(bus, args, n);
3335
3336 for (i = 1; i < n; i++) {
3337
3338 if (!(m = dbus_message_new_method_call(
3339 "org.freedesktop.systemd1",
3340 "/org/freedesktop/systemd1",
3341 "org.freedesktop.systemd1.Manager",
3342 "ResetFailedUnit"))) {
3343 log_error("Could not allocate message.");
3344 r = -ENOMEM;
3345 goto finish;
3346 }
3347
3348 if (!dbus_message_append_args(m,
3349 DBUS_TYPE_STRING, args + i,
3350 DBUS_TYPE_INVALID)) {
3351 log_error("Could not append arguments to message.");
3352 r = -ENOMEM;
3353 goto finish;
3354 }
3355
3356 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3357 log_error("Failed to issue method call: %s", bus_error_message(&error));
3358 r = -EIO;
3359 goto finish;
3360 }
3361
3362 dbus_message_unref(m);
3363 dbus_message_unref(reply);
3364 m = reply = NULL;
3365 }
3366
3367 r = 0;
3368
3369 finish:
3370 if (m)
3371 dbus_message_unref(m);
3372
3373 if (reply)
3374 dbus_message_unref(reply);
3375
3376 dbus_error_free(&error);
3377
3378 return r;
3379 }
3380
3381 static int show_enviroment(DBusConnection *bus, char **args, unsigned n) {
3382 DBusMessage *m = NULL, *reply = NULL;
3383 DBusError error;
3384 DBusMessageIter iter, sub, sub2;
3385 int r;
3386 const char
3387 *interface = "org.freedesktop.systemd1.Manager",
3388 *property = "Environment";
3389
3390 dbus_error_init(&error);
3391
3392 pager_open();
3393
3394 if (!(m = dbus_message_new_method_call(
3395 "org.freedesktop.systemd1",
3396 "/org/freedesktop/systemd1",
3397 "org.freedesktop.DBus.Properties",
3398 "Get"))) {
3399 log_error("Could not allocate message.");
3400 return -ENOMEM;
3401 }
3402
3403 if (!dbus_message_append_args(m,
3404 DBUS_TYPE_STRING, &interface,
3405 DBUS_TYPE_STRING, &property,
3406 DBUS_TYPE_INVALID)) {
3407 log_error("Could not append arguments to message.");
3408 r = -ENOMEM;
3409 goto finish;
3410 }
3411
3412 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3413 log_error("Failed to issue method call: %s", bus_error_message(&error));
3414 r = -EIO;
3415 goto finish;
3416 }
3417
3418 if (!dbus_message_iter_init(reply, &iter) ||
3419 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
3420 log_error("Failed to parse reply.");
3421 r = -EIO;
3422 goto finish;
3423 }
3424
3425 dbus_message_iter_recurse(&iter, &sub);
3426
3427 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_ARRAY ||
3428 dbus_message_iter_get_element_type(&sub) != DBUS_TYPE_STRING) {
3429 log_error("Failed to parse reply.");
3430 r = -EIO;
3431 goto finish;
3432 }
3433
3434 dbus_message_iter_recurse(&sub, &sub2);
3435
3436 while (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_INVALID) {
3437 const char *text;
3438
3439 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_STRING) {
3440 log_error("Failed to parse reply.");
3441 r = -EIO;
3442 goto finish;
3443 }
3444
3445 dbus_message_iter_get_basic(&sub2, &text);
3446 printf("%s\n", text);
3447
3448 dbus_message_iter_next(&sub2);
3449 }
3450
3451 r = 0;
3452
3453 finish:
3454 if (m)
3455 dbus_message_unref(m);
3456
3457 if (reply)
3458 dbus_message_unref(reply);
3459
3460 dbus_error_free(&error);
3461
3462 return r;
3463 }
3464
3465 static int set_environment(DBusConnection *bus, char **args, unsigned n) {
3466 DBusMessage *m = NULL, *reply = NULL;
3467 DBusError error;
3468 int r;
3469 const char *method;
3470 DBusMessageIter iter, sub;
3471 unsigned i;
3472
3473 dbus_error_init(&error);
3474
3475 method = streq(args[0], "set-environment")
3476 ? "SetEnvironment"
3477 : "UnsetEnvironment";
3478
3479 if (!(m = dbus_message_new_method_call(
3480 "org.freedesktop.systemd1",
3481 "/org/freedesktop/systemd1",
3482 "org.freedesktop.systemd1.Manager",
3483 method))) {
3484
3485 log_error("Could not allocate message.");
3486 return -ENOMEM;
3487 }
3488
3489 dbus_message_iter_init_append(m, &iter);
3490
3491 if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "s", &sub)) {
3492 log_error("Could not append arguments to message.");
3493 r = -ENOMEM;
3494 goto finish;
3495 }
3496
3497 for (i = 1; i < n; i++)
3498 if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &args[i])) {
3499 log_error("Could not append arguments to message.");
3500 r = -ENOMEM;
3501 goto finish;
3502 }
3503
3504 if (!dbus_message_iter_close_container(&iter, &sub)) {
3505 log_error("Could not append arguments to message.");
3506 r = -ENOMEM;
3507 goto finish;
3508 }
3509
3510 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3511 log_error("Failed to issue method call: %s", bus_error_message(&error));
3512 r = -EIO;
3513 goto finish;
3514 }
3515
3516 r = 0;
3517
3518 finish:
3519 if (m)
3520 dbus_message_unref(m);
3521
3522 if (reply)
3523 dbus_message_unref(reply);
3524
3525 dbus_error_free(&error);
3526
3527 return r;
3528 }
3529
3530 typedef struct {
3531 char *name;
3532 char *path;
3533
3534 char **aliases;
3535 char **wanted_by;
3536 } InstallInfo;
3537
3538 static Hashmap *will_install = NULL, *have_installed = NULL;
3539 static Set *remove_symlinks_to = NULL;
3540 static unsigned n_symlinks = 0;
3541
3542 static void install_info_free(InstallInfo *i) {
3543 assert(i);
3544
3545 free(i->name);
3546 free(i->path);
3547 strv_free(i->aliases);
3548 strv_free(i->wanted_by);
3549 free(i);
3550 }
3551
3552 static void install_info_hashmap_free(Hashmap *m) {
3553 InstallInfo *i;
3554
3555 while ((i = hashmap_steal_first(m)))
3556 install_info_free(i);
3557
3558 hashmap_free(m);
3559 }
3560
3561 static int install_info_add(const char *name) {
3562 InstallInfo *i;
3563 int r;
3564
3565 assert(will_install);
3566
3567 if (!unit_name_is_valid_no_type(name, true)) {
3568 log_warning("Unit name %s is not a valid unit name.", name);
3569 return -EINVAL;
3570 }
3571
3572 if (hashmap_get(have_installed, name) ||
3573 hashmap_get(will_install, name))
3574 return 0;
3575
3576 if (!(i = new0(InstallInfo, 1))) {
3577 r = -ENOMEM;
3578 goto fail;
3579 }
3580
3581 if (!(i->name = strdup(name))) {
3582 r = -ENOMEM;
3583 goto fail;
3584 }
3585
3586 if ((r = hashmap_put(will_install, i->name, i)) < 0)
3587 goto fail;
3588
3589 return 0;
3590
3591 fail:
3592 if (i)
3593 install_info_free(i);
3594
3595 return r;
3596 }
3597
3598 static int config_parse_also(
3599 const char *filename,
3600 unsigned line,
3601 const char *section,
3602 const char *lvalue,
3603 const char *rvalue,
3604 void *data,
3605 void *userdata) {
3606
3607 char *w;
3608 size_t l;
3609 char *state;
3610
3611 assert(filename);
3612 assert(lvalue);
3613 assert(rvalue);
3614
3615 FOREACH_WORD_QUOTED(w, l, rvalue, state) {
3616 char *n;
3617 int r;
3618
3619 if (!(n = strndup(w, l)))
3620 return -ENOMEM;
3621
3622 if ((r = install_info_add(n)) < 0) {
3623 log_warning("Cannot install unit %s: %s", n, strerror(-r));
3624 free(n);
3625 return r;
3626 }
3627
3628 free(n);
3629 }
3630
3631 return 0;
3632 }
3633
3634 static int mark_symlink_for_removal(const char *p) {
3635 char *n;
3636 int r;
3637
3638 assert(p);
3639 assert(path_is_absolute(p));
3640
3641 if (!remove_symlinks_to)
3642 return 0;
3643
3644 if (!(n = strdup(p)))
3645 return -ENOMEM;
3646
3647 path_kill_slashes(n);
3648
3649 if ((r = set_put(remove_symlinks_to, n)) < 0) {
3650 free(n);
3651 return r == -EEXIST ? 0 : r;
3652 }
3653
3654 return 0;
3655 }
3656
3657 static int remove_marked_symlinks_fd(int fd, const char *config_path, const char *root, bool *deleted) {
3658 int r = 0;
3659 DIR *d;
3660 struct dirent *de;
3661
3662 assert(fd >= 0);
3663 assert(root);
3664 assert(deleted);
3665
3666 if (!(d = fdopendir(fd))) {
3667 close_nointr_nofail(fd);
3668 return -errno;
3669 }
3670
3671 rewinddir(d);
3672
3673 while ((de = readdir(d))) {
3674 bool is_dir = false, is_link = false;
3675
3676 if (ignore_file(de->d_name))
3677 continue;
3678
3679 if (de->d_type == DT_LNK)
3680 is_link = true;
3681 else if (de->d_type == DT_DIR)
3682 is_dir = true;
3683 else if (de->d_type == DT_UNKNOWN) {
3684 struct stat st;
3685
3686 if (fstatat(fd, de->d_name, &st, AT_SYMLINK_NOFOLLOW) < 0) {
3687 log_error("Failed to stat %s/%s: %m", root, de->d_name);
3688
3689 if (r == 0)
3690 r = -errno;
3691 continue;
3692 }
3693
3694 is_link = S_ISLNK(st.st_mode);
3695 is_dir = S_ISDIR(st.st_mode);
3696 } else
3697 continue;
3698
3699 if (is_dir) {
3700 int nfd, q;
3701 char *p;
3702
3703 if ((nfd = openat(fd, de->d_name, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW)) < 0) {
3704 log_error("Failed to open %s/%s: %m", root, de->d_name);
3705
3706 if (r == 0)
3707 r = -errno;
3708 continue;
3709 }
3710
3711 if (asprintf(&p, "%s/%s", root, de->d_name) < 0) {
3712 log_error("Failed to allocate directory string.");
3713 close_nointr_nofail(nfd);
3714 r = -ENOMEM;
3715 break;
3716 }
3717
3718 /* This will close nfd, regardless whether it succeeds or not */
3719 q = remove_marked_symlinks_fd(nfd, config_path, p, deleted);
3720 free(p);
3721
3722 if (r == 0)
3723 r = q;
3724
3725 } else if (is_link) {
3726 char *p, *dest, *c;
3727 int q;
3728
3729 if (asprintf(&p, "%s/%s", root, de->d_name) < 0) {
3730 log_error("Failed to allocate symlink string.");
3731 r = -ENOMEM;
3732 break;
3733 }
3734
3735 if ((q = readlink_and_make_absolute(p, &dest)) < 0) {
3736 log_error("Cannot read symlink %s: %s", p, strerror(-q));
3737 free(p);
3738
3739 if (r == 0)
3740 r = q;
3741 continue;
3742 }
3743
3744 if ((c = canonicalize_file_name(dest))) {
3745 /* This might fail if the destination
3746 * is already removed */
3747
3748 free(dest);
3749 dest = c;
3750 }
3751
3752 path_kill_slashes(dest);
3753 if (set_get(remove_symlinks_to, dest)) {
3754
3755 if (!arg_quiet)
3756 log_info("rm '%s'", p);
3757
3758 if (unlink(p) < 0) {
3759 log_error("Cannot unlink symlink %s: %m", p);
3760
3761 if (r == 0)
3762 r = -errno;
3763 } else {
3764 rmdir_parents(p, config_path);
3765 path_kill_slashes(p);
3766
3767 if (!set_get(remove_symlinks_to, p)) {
3768
3769 if ((r = mark_symlink_for_removal(p)) < 0) {
3770 if (r == 0)
3771 r = q;
3772 } else
3773 *deleted = true;
3774 }
3775 }
3776 }
3777
3778 free(p);
3779 free(dest);
3780 }
3781 }
3782
3783 closedir(d);
3784
3785 return r;
3786 }
3787
3788 static int remove_marked_symlinks(const char *config_path) {
3789 int fd, r = 0;
3790 bool deleted;
3791
3792 assert(config_path);
3793
3794 if (set_size(remove_symlinks_to) <= 0)
3795 return 0;
3796
3797 if ((fd = open(config_path, O_RDONLY|O_NONBLOCK|O_DIRECTORY|O_CLOEXEC|O_NOFOLLOW)) < 0)
3798 return -errno;
3799
3800 do {
3801 int q, cfd;
3802 deleted = false;
3803
3804 if ((cfd = dup(fd)) < 0) {
3805 r = -errno;
3806 break;
3807 }
3808
3809 /* This takes possession of cfd and closes it */
3810 if ((q = remove_marked_symlinks_fd(cfd, config_path, config_path, &deleted)) < 0) {
3811 if (r == 0)
3812 r = q;
3813 }
3814 } while (deleted);
3815
3816 close_nointr_nofail(fd);
3817
3818 return r;
3819 }
3820
3821 static int create_symlink(const char *verb, const char *old_path, const char *new_path) {
3822 int r;
3823
3824 assert(old_path);
3825 assert(new_path);
3826 assert(verb);
3827
3828 if (streq(verb, "enable")) {
3829 char *dest;
3830
3831 mkdir_parents(new_path, 0755);
3832
3833 if (symlink(old_path, new_path) >= 0) {
3834
3835 if (!arg_quiet)
3836 log_info("ln -s '%s' '%s'", old_path, new_path);
3837
3838 return 0;
3839 }
3840
3841 if (errno != EEXIST) {
3842 log_error("Cannot link %s to %s: %m", old_path, new_path);
3843 return -errno;
3844 }
3845
3846 if ((r = readlink_and_make_absolute(new_path, &dest)) < 0) {
3847
3848 if (errno == EINVAL) {
3849 log_error("Cannot link %s to %s, file exists already and is not a symlink.", old_path, new_path);
3850 return -EEXIST;
3851 }
3852
3853 log_error("readlink() failed: %s", strerror(-r));
3854 return r;
3855 }
3856
3857 if (streq(dest, old_path)) {
3858 free(dest);
3859 return 0;
3860 }
3861
3862 if (!arg_force) {
3863 log_error("Cannot link %s to %s, symlink exists already and points to %s.", old_path, new_path, dest);
3864 free(dest);
3865 return -EEXIST;
3866 }
3867
3868 free(dest);
3869 unlink(new_path);
3870
3871 if (!arg_quiet)
3872 log_info("ln -s '%s' '%s'", old_path, new_path);
3873
3874 if (symlink(old_path, new_path) >= 0)
3875 return 0;
3876
3877 log_error("Cannot link %s to %s: %m", old_path, new_path);
3878 return -errno;
3879
3880 } else if (streq(verb, "disable")) {
3881 char *dest;
3882
3883 if ((r = mark_symlink_for_removal(old_path)) < 0)
3884 return r;
3885
3886 if ((r = readlink_and_make_absolute(new_path, &dest)) < 0) {
3887 if (errno == ENOENT)
3888 return 0;
3889
3890 if (errno == EINVAL) {
3891 log_warning("File %s not a symlink, ignoring.", old_path);
3892 return 0;
3893 }
3894
3895 log_error("readlink() failed: %s", strerror(-r));
3896 return r;
3897 }
3898
3899 if (!streq(dest, old_path)) {
3900 log_warning("File %s not a symlink to %s but points to %s, ignoring.", new_path, old_path, dest);
3901 free(dest);
3902 return 0;
3903 }
3904
3905 free(dest);
3906
3907 if ((r = mark_symlink_for_removal(new_path)) < 0)
3908 return r;
3909
3910 if (!arg_quiet)
3911 log_info("rm '%s'", new_path);
3912
3913 if (unlink(new_path) >= 0)
3914 return 0;
3915
3916 log_error("Cannot unlink %s: %m", new_path);
3917 return -errno;
3918
3919 } else if (streq(verb, "is-enabled")) {
3920 char *dest;
3921
3922 if ((r = readlink_and_make_absolute(new_path, &dest)) < 0) {
3923
3924 if (errno == ENOENT || errno == EINVAL)
3925 return 0;
3926
3927 log_error("readlink() failed: %s", strerror(-r));
3928 return r;
3929 }
3930
3931 if (streq(dest, old_path)) {
3932 free(dest);
3933 return 1;
3934 }
3935
3936 return 0;
3937 }
3938
3939 assert_not_reached("Unknown action.");
3940 }
3941
3942 static int install_info_symlink_alias(const char *verb, InstallInfo *i, const char *config_path) {
3943 char **s;
3944 char *alias_path = NULL;
3945 int r;
3946
3947 assert(verb);
3948 assert(i);
3949 assert(config_path);
3950
3951 STRV_FOREACH(s, i->aliases) {
3952
3953 free(alias_path);
3954 if (!(alias_path = path_make_absolute(*s, config_path))) {
3955 log_error("Out of memory");
3956 r = -ENOMEM;
3957 goto finish;
3958 }
3959
3960 if ((r = create_symlink(verb, i->path, alias_path)) != 0)
3961 goto finish;
3962
3963 if (streq(verb, "disable"))
3964 rmdir_parents(alias_path, config_path);
3965 }
3966 r = 0;
3967
3968 finish:
3969 free(alias_path);
3970
3971 return r;
3972 }
3973
3974 static int install_info_symlink_wants(const char *verb, InstallInfo *i, const char *config_path) {
3975 char **s;
3976 char *alias_path = NULL;
3977 int r;
3978
3979 assert(verb);
3980 assert(i);
3981 assert(config_path);
3982
3983 STRV_FOREACH(s, i->wanted_by) {
3984 if (!unit_name_is_valid_no_type(*s, true)) {
3985 log_error("Invalid name %s.", *s);
3986 r = -EINVAL;
3987 goto finish;
3988 }
3989
3990 free(alias_path);
3991 alias_path = NULL;
3992
3993 if (asprintf(&alias_path, "%s/%s.wants/%s", config_path, *s, i->name) < 0) {
3994 log_error("Out of memory");
3995 r = -ENOMEM;
3996 goto finish;
3997 }
3998
3999 if ((r = create_symlink(verb, i->path, alias_path)) != 0)
4000 goto finish;
4001
4002 if (streq(verb, "disable"))
4003 rmdir_parents(alias_path, config_path);
4004 }
4005
4006 r = 0;
4007
4008 finish:
4009 free(alias_path);
4010
4011 return r;
4012 }
4013
4014 static int install_info_apply(const char *verb, LookupPaths *paths, InstallInfo *i, const char *config_path) {
4015
4016 const ConfigItem items[] = {
4017 { "Alias", config_parse_strv, &i->aliases, "Install" },
4018 { "WantedBy", config_parse_strv, &i->wanted_by, "Install" },
4019 { "Also", config_parse_also, NULL, "Install" },
4020
4021 { NULL, NULL, NULL, NULL }
4022 };
4023
4024 char **p;
4025 char *filename = NULL;
4026 FILE *f = NULL;
4027 int r;
4028
4029 assert(paths);
4030 assert(i);
4031
4032 STRV_FOREACH(p, paths->unit_path) {
4033 int fd;
4034
4035 if (!(filename = path_make_absolute(i->name, *p))) {
4036 log_error("Out of memory");
4037 return -ENOMEM;
4038 }
4039
4040 /* Ensure that we don't follow symlinks */
4041 if ((fd = open(filename, O_RDONLY|O_CLOEXEC|O_NOFOLLOW|O_NOCTTY)) >= 0)
4042 if ((f = fdopen(fd, "re")))
4043 break;
4044
4045 if (errno == ELOOP) {
4046 log_error("Refusing to operate on symlinks, please pass unit names or absolute paths to unit files.");
4047 free(filename);
4048 return -errno;
4049 }
4050
4051 if (errno != ENOENT) {
4052 log_error("Failed to open %s: %m", filename);
4053 free(filename);
4054 return -errno;
4055 }
4056
4057 free(filename);
4058 filename = NULL;
4059 }
4060
4061 if (!f) {
4062 #if (defined(TARGET_FEDORA) || defined(TARGET_MANDRIVA)) && defined (HAVE_SYSV_COMPAT)
4063
4064 if (endswith(i->name, ".service")) {
4065 char *sysv;
4066 bool exists;
4067
4068 if (asprintf(&sysv, SYSTEM_SYSVINIT_PATH "/%s", i->name) < 0) {
4069 log_error("Out of memory");
4070 return -ENOMEM;
4071 }
4072
4073 sysv[strlen(sysv) - sizeof(".service") + 1] = 0;
4074 exists = access(sysv, F_OK) >= 0;
4075
4076 if (exists) {
4077 pid_t pid;
4078 siginfo_t status;
4079
4080 const char *argv[] = {
4081 "/sbin/chkconfig",
4082 NULL,
4083 NULL,
4084 NULL
4085 };
4086
4087 log_info("%s is not a native service, redirecting to /sbin/chkconfig.", i->name);
4088
4089 argv[1] = file_name_from_path(sysv);
4090 argv[2] =
4091 streq(verb, "enable") ? "on" :
4092 streq(verb, "disable") ? "off" : "--level=3";
4093
4094 log_info("Executing %s %s %s", argv[0], argv[1], strempty(argv[2]));
4095
4096 if ((pid = fork()) < 0) {
4097 log_error("Failed to fork: %m");
4098 free(sysv);
4099 return -errno;
4100 } else if (pid == 0) {
4101 execv(argv[0], (char**) argv);
4102 _exit(EXIT_FAILURE);
4103 }
4104
4105 free(sysv);
4106
4107 if ((r = wait_for_terminate(pid, &status)) < 0)
4108 return r;
4109
4110 if (status.si_code == CLD_EXITED) {
4111
4112 if (streq(verb, "is-enabled"))
4113 return status.si_status == 0 ? 1 : 0;
4114
4115 if (status.si_status == 0)
4116 n_symlinks ++;
4117
4118 return status.si_status == 0 ? 0 : -EINVAL;
4119
4120 } else
4121 return -EPROTO;
4122 }
4123
4124 free(sysv);
4125 }
4126
4127 #endif
4128
4129 log_error("Couldn't find %s.", i->name);
4130 return -ENOENT;
4131 }
4132
4133 i->path = filename;
4134
4135 if ((r = config_parse(filename, f, NULL, items, true, i)) < 0) {
4136 fclose(f);
4137 return r;
4138 }
4139
4140 n_symlinks += strv_length(i->aliases);
4141 n_symlinks += strv_length(i->wanted_by);
4142
4143 fclose(f);
4144
4145 if ((r = install_info_symlink_alias(verb, i, config_path)) != 0)
4146 return r;
4147
4148 if ((r = install_info_symlink_wants(verb, i, config_path)) != 0)
4149 return r;
4150
4151 if ((r = mark_symlink_for_removal(filename)) < 0)
4152 return r;
4153
4154 if ((r = remove_marked_symlinks(config_path)) < 0)
4155 return r;
4156
4157 return 0;
4158 }
4159
4160 static char *get_config_path(void) {
4161
4162 if (arg_user && arg_global)
4163 return strdup(USER_CONFIG_UNIT_PATH);
4164
4165 if (arg_user) {
4166 char *p;
4167
4168 if (user_config_home(&p) < 0)
4169 return NULL;
4170
4171 return p;
4172 }
4173
4174 return strdup(SYSTEM_CONFIG_UNIT_PATH);
4175 }
4176
4177 static int enable_unit(DBusConnection *bus, char **args, unsigned n) {
4178 DBusError error;
4179 int r;
4180 LookupPaths paths;
4181 char *config_path = NULL;
4182 unsigned j;
4183 InstallInfo *i;
4184 const char *verb = args[0];
4185
4186 dbus_error_init(&error);
4187
4188 zero(paths);
4189 if ((r = lookup_paths_init(&paths, arg_user ? MANAGER_USER : MANAGER_SYSTEM)) < 0) {
4190 log_error("Failed to determine lookup paths: %s", strerror(-r));
4191 goto finish;
4192 }
4193
4194 if (!(config_path = get_config_path())) {
4195 log_error("Failed to determine config path");
4196 r = -ENOMEM;
4197 goto finish;
4198 }
4199
4200 will_install = hashmap_new(string_hash_func, string_compare_func);
4201 have_installed = hashmap_new(string_hash_func, string_compare_func);
4202
4203 if (!will_install || !have_installed) {
4204 log_error("Failed to allocate unit sets.");
4205 r = -ENOMEM;
4206 goto finish;
4207 }
4208
4209 if (!arg_defaults && streq(verb, "disable"))
4210 if (!(remove_symlinks_to = set_new(string_hash_func, string_compare_func))) {
4211 log_error("Failed to allocate symlink sets.");
4212 r = -ENOMEM;
4213 goto finish;
4214 }
4215
4216 for (j = 1; j < n; j++)
4217 if ((r = install_info_add(args[j])) < 0) {
4218 log_warning("Cannot install unit %s: %s", args[j], strerror(-r));
4219 goto finish;
4220 }
4221
4222 r = 0;
4223
4224 while ((i = hashmap_first(will_install))) {
4225 int q;
4226
4227 assert_se(hashmap_move_one(have_installed, will_install, i->name) == 0);
4228
4229 if ((q = install_info_apply(verb, &paths, i, config_path)) != 0) {
4230
4231 if (q < 0) {
4232 if (r == 0)
4233 r = q;
4234 goto finish;
4235 }
4236
4237 /* In test mode and found something */
4238 r = 1;
4239 break;
4240 }
4241 }
4242
4243 if (streq(verb, "is-enabled"))
4244 r = r > 0 ? 0 : -ENOENT;
4245 else {
4246 if (n_symlinks <= 0)
4247 log_warning("Unit files contain no applicable installation information. Ignoring.");
4248
4249 if (bus &&
4250 /* Don't try to reload anything if the user asked us to not do this */
4251 !arg_no_reload &&
4252 /* Don't try to reload anything when updating a unit globally */
4253 !arg_global &&
4254 /* Don't try to reload anything if we are called for system changes but the system wasn't booted with systemd */
4255 (arg_user || sd_booted() > 0) &&
4256 /* Don't try to reload anything if we are running in a chroot environment */
4257 (arg_user || running_in_chroot() <= 0) ) {
4258 int q;
4259
4260 if ((q = daemon_reload(bus, args, n)) < 0)
4261 r = q;
4262 }
4263 }
4264
4265 finish:
4266 install_info_hashmap_free(will_install);
4267 install_info_hashmap_free(have_installed);
4268
4269 set_free_free(remove_symlinks_to);
4270
4271 lookup_paths_free(&paths);
4272
4273 free(config_path);
4274
4275 return r;
4276 }
4277
4278 static int systemctl_help(void) {
4279
4280 printf("%s [OPTIONS...] {COMMAND} ...\n\n"
4281 "Send control commands to or query the systemd manager.\n\n"
4282 " -h --help Show this help\n"
4283 " --version Show package version\n"
4284 " -t --type=TYPE List only units of a particular type\n"
4285 " -p --property=NAME Show only properties by this name\n"
4286 " -a --all Show all units/properties, including dead/empty ones\n"
4287 " --failed Show only failed units\n"
4288 " --full Don't ellipsize unit names on output\n"
4289 " --fail When queueing a new job, fail if conflicting jobs are\n"
4290 " pending\n"
4291 " --ignore-dependencies\n"
4292 " When queueing a new job, ignore all its dependencies\n"
4293 " -q --quiet Suppress output\n"
4294 " --no-block Do not wait until operation finished\n"
4295 " --no-pager Do not pipe output into a pager.\n"
4296 " --system Connect to system manager\n"
4297 " --user Connect to user service manager\n"
4298 " --order When generating graph for dot, show only order\n"
4299 " --require When generating graph for dot, show only requirement\n"
4300 " --no-wall Don't send wall message before halt/power-off/reboot\n"
4301 " --global Enable/disable unit files globally\n"
4302 " --no-reload When enabling/disabling unit files, don't reload daemon\n"
4303 " configuration\n"
4304 " --no-ask-password\n"
4305 " Do not ask for system passwords\n"
4306 " --kill-mode=MODE How to send signal\n"
4307 " --kill-who=WHO Who to send signal to\n"
4308 " -s --signal=SIGNAL Which signal to send\n"
4309 " -f --force When enabling unit files, override existing symlinks\n"
4310 " When shutting down, execute action immediately\n"
4311 " --defaults When disabling unit files, remove default symlinks only\n\n"
4312 "Commands:\n"
4313 " list-units List units\n"
4314 " start [NAME...] Start (activate) one or more units\n"
4315 " stop [NAME...] Stop (deactivate) one or more units\n"
4316 " reload [NAME...] Reload one or more units\n"
4317 " restart [NAME...] Start or restart one or more units\n"
4318 " try-restart [NAME...] Restart one or more units if active\n"
4319 " reload-or-restart [NAME...] Reload one or more units is possible,\n"
4320 " otherwise start or restart\n"
4321 " reload-or-try-restart [NAME...] Reload one or more units is possible,\n"
4322 " otherwise restart if active\n"
4323 " isolate [NAME] Start one unit and stop all others\n"
4324 " kill [NAME...] Send signal to processes of a unit\n"
4325 " is-active [NAME...] Check whether units are active\n"
4326 " status [NAME...|PID...] Show runtime status of one or more units\n"
4327 " show [NAME...|JOB...] Show properties of one or more\n"
4328 " units/jobs or the manager\n"
4329 " reset-failed [NAME...] Reset failed state for all, one, or more\n"
4330 " units\n"
4331 " enable [NAME...] Enable one or more unit files\n"
4332 " disable [NAME...] Disable one or more unit files\n"
4333 " is-enabled [NAME...] Check whether unit files are enabled\n"
4334 " load [NAME...] Load one or more units\n"
4335 " list-jobs List jobs\n"
4336 " cancel [JOB...] Cancel all, one, or more jobs\n"
4337 " monitor Monitor unit/job changes\n"
4338 " dump Dump server status\n"
4339 " dot Dump dependency graph for dot(1)\n"
4340 " snapshot [NAME] Create a snapshot\n"
4341 " delete [NAME...] Remove one or more snapshots\n"
4342 " daemon-reload Reload systemd manager configuration\n"
4343 " daemon-reexec Reexecute systemd manager\n"
4344 " show-environment Dump environment\n"
4345 " set-environment [NAME=VALUE...] Set one or more environment variables\n"
4346 " unset-environment [NAME...] Unset one or more environment variables\n"
4347 " default Enter system default mode\n"
4348 " rescue Enter system rescue mode\n"
4349 " emergency Enter system emergency mode\n"
4350 " halt Shut down and halt the system\n"
4351 " poweroff Shut down and power-off the system\n"
4352 " reboot Shut down and reboot the system\n"
4353 " kexec Shut down and reboot the system with kexec\n"
4354 " exit Ask for user instance termination\n",
4355 program_invocation_short_name);
4356
4357 return 0;
4358 }
4359
4360 static int halt_help(void) {
4361
4362 printf("%s [OPTIONS...]\n\n"
4363 "%s the system.\n\n"
4364 " --help Show this help\n"
4365 " --halt Halt the machine\n"
4366 " -p --poweroff Switch off the machine\n"
4367 " --reboot Reboot the machine\n"
4368 " -f --force Force immediate halt/power-off/reboot\n"
4369 " -w --wtmp-only Don't halt/power-off/reboot, just write wtmp record\n"
4370 " -d --no-wtmp Don't write wtmp record\n"
4371 " -n --no-sync Don't sync before halt/power-off/reboot\n"
4372 " --no-wall Don't send wall message before halt/power-off/reboot\n",
4373 program_invocation_short_name,
4374 arg_action == ACTION_REBOOT ? "Reboot" :
4375 arg_action == ACTION_POWEROFF ? "Power off" :
4376 "Halt");
4377
4378 return 0;
4379 }
4380
4381 static int shutdown_help(void) {
4382
4383 printf("%s [OPTIONS...] [TIME] [WALL...]\n\n"
4384 "Shut down the system.\n\n"
4385 " --help Show this help\n"
4386 " -H --halt Halt the machine\n"
4387 " -P --poweroff Power-off the machine\n"
4388 " -r --reboot Reboot the machine\n"
4389 " -h Equivalent to --poweroff, overriden by --halt\n"
4390 " -k Don't halt/power-off/reboot, just send warnings\n"
4391 " --no-wall Don't send wall message before halt/power-off/reboot\n"
4392 " -c Cancel a pending shutdown\n",
4393 program_invocation_short_name);
4394
4395 return 0;
4396 }
4397
4398 static int telinit_help(void) {
4399
4400 printf("%s [OPTIONS...] {COMMAND}\n\n"
4401 "Send control commands to the init daemon.\n\n"
4402 " --help Show this help\n"
4403 " --no-wall Don't send wall message before halt/power-off/reboot\n\n"
4404 "Commands:\n"
4405 " 0 Power-off the machine\n"
4406 " 6 Reboot the machine\n"
4407 " 2, 3, 4, 5 Start runlevelX.target unit\n"
4408 " 1, s, S Enter rescue mode\n"
4409 " q, Q Reload init daemon configuration\n"
4410 " u, U Reexecute init daemon\n",
4411 program_invocation_short_name);
4412
4413 return 0;
4414 }
4415
4416 static int runlevel_help(void) {
4417
4418 printf("%s [OPTIONS...]\n\n"
4419 "Prints the previous and current runlevel of the init system.\n\n"
4420 " --help Show this help\n",
4421 program_invocation_short_name);
4422
4423 return 0;
4424 }
4425
4426 static int systemctl_parse_argv(int argc, char *argv[]) {
4427
4428 enum {
4429 ARG_FAIL = 0x100,
4430 ARG_IGNORE_DEPENDENCIES,
4431 ARG_VERSION,
4432 ARG_USER,
4433 ARG_SYSTEM,
4434 ARG_GLOBAL,
4435 ARG_NO_BLOCK,
4436 ARG_NO_PAGER,
4437 ARG_NO_WALL,
4438 ARG_ORDER,
4439 ARG_REQUIRE,
4440 ARG_FULL,
4441 ARG_NO_RELOAD,
4442 ARG_DEFAULTS,
4443 ARG_KILL_MODE,
4444 ARG_KILL_WHO,
4445 ARG_NO_ASK_PASSWORD,
4446 ARG_FAILED
4447 };
4448
4449 static const struct option options[] = {
4450 { "help", no_argument, NULL, 'h' },
4451 { "version", no_argument, NULL, ARG_VERSION },
4452 { "type", required_argument, NULL, 't' },
4453 { "property", required_argument, NULL, 'p' },
4454 { "all", no_argument, NULL, 'a' },
4455 { "failed", no_argument, NULL, ARG_FAILED },
4456 { "full", no_argument, NULL, ARG_FULL },
4457 { "fail", no_argument, NULL, ARG_FAIL },
4458 { "ignore-dependencies", no_argument, NULL, ARG_IGNORE_DEPENDENCIES },
4459 { "user", no_argument, NULL, ARG_USER },
4460 { "system", no_argument, NULL, ARG_SYSTEM },
4461 { "global", no_argument, NULL, ARG_GLOBAL },
4462 { "no-block", no_argument, NULL, ARG_NO_BLOCK },
4463 { "no-pager", no_argument, NULL, ARG_NO_PAGER },
4464 { "no-wall", no_argument, NULL, ARG_NO_WALL },
4465 { "quiet", no_argument, NULL, 'q' },
4466 { "order", no_argument, NULL, ARG_ORDER },
4467 { "require", no_argument, NULL, ARG_REQUIRE },
4468 { "force", no_argument, NULL, 'f' },
4469 { "no-reload", no_argument, NULL, ARG_NO_RELOAD },
4470 { "defaults", no_argument, NULL, ARG_DEFAULTS },
4471 { "kill-mode", required_argument, NULL, ARG_KILL_MODE },
4472 { "kill-who", required_argument, NULL, ARG_KILL_WHO },
4473 { "signal", required_argument, NULL, 's' },
4474 { "no-ask-password", no_argument, NULL, ARG_NO_ASK_PASSWORD },
4475 { NULL, 0, NULL, 0 }
4476 };
4477
4478 int c;
4479
4480 assert(argc >= 0);
4481 assert(argv);
4482
4483 /* Only when running as systemctl we ask for passwords */
4484 arg_ask_password = true;
4485
4486 while ((c = getopt_long(argc, argv, "ht:p:aqfs:", options, NULL)) >= 0) {
4487
4488 switch (c) {
4489
4490 case 'h':
4491 systemctl_help();
4492 return 0;
4493
4494 case ARG_VERSION:
4495 puts(PACKAGE_STRING);
4496 puts(DISTRIBUTION);
4497 puts(SYSTEMD_FEATURES);
4498 return 0;
4499
4500 case 't':
4501 arg_type = optarg;
4502 break;
4503
4504 case 'p': {
4505 char **l;
4506
4507 if (!(l = strv_append(arg_property, optarg)))
4508 return -ENOMEM;
4509
4510 strv_free(arg_property);
4511 arg_property = l;
4512
4513 /* If the user asked for a particular
4514 * property, show it to him, even if it is
4515 * empty. */
4516 arg_all = true;
4517 break;
4518 }
4519
4520 case 'a':
4521 arg_all = true;
4522 break;
4523
4524 case ARG_FAIL:
4525 arg_job_mode = "fail";
4526 break;
4527
4528 case ARG_IGNORE_DEPENDENCIES:
4529 arg_job_mode = "ignore-dependencies";
4530 break;
4531
4532 case ARG_USER:
4533 arg_user = true;
4534 break;
4535
4536 case ARG_SYSTEM:
4537 arg_user = false;
4538 break;
4539
4540 case ARG_NO_BLOCK:
4541 arg_no_block = true;
4542 break;
4543
4544 case ARG_NO_PAGER:
4545 arg_no_pager = true;
4546 break;
4547
4548 case ARG_NO_WALL:
4549 arg_no_wall = true;
4550 break;
4551
4552 case ARG_ORDER:
4553 arg_dot = DOT_ORDER;
4554 break;
4555
4556 case ARG_REQUIRE:
4557 arg_dot = DOT_REQUIRE;
4558 break;
4559
4560 case ARG_FULL:
4561 arg_full = true;
4562 break;
4563
4564 case ARG_FAILED:
4565 arg_failed = true;
4566 break;
4567
4568 case 'q':
4569 arg_quiet = true;
4570 break;
4571
4572 case 'f':
4573 arg_force = true;
4574 break;
4575
4576 case ARG_NO_RELOAD:
4577 arg_no_reload = true;
4578 break;
4579
4580 case ARG_GLOBAL:
4581 arg_global = true;
4582 arg_user = true;
4583 break;
4584
4585 case ARG_DEFAULTS:
4586 arg_defaults = true;
4587 break;
4588
4589 case ARG_KILL_WHO:
4590 arg_kill_who = optarg;
4591 break;
4592
4593 case ARG_KILL_MODE:
4594 arg_kill_mode = optarg;
4595 break;
4596
4597 case 's':
4598 if ((arg_signal = signal_from_string_try_harder(optarg)) < 0) {
4599 log_error("Failed to parse signal string %s.", optarg);
4600 return -EINVAL;
4601 }
4602 break;
4603
4604 case ARG_NO_ASK_PASSWORD:
4605 arg_ask_password = false;
4606 break;
4607
4608 case '?':
4609 return -EINVAL;
4610
4611 default:
4612 log_error("Unknown option code %c", c);
4613 return -EINVAL;
4614 }
4615 }
4616
4617 return 1;
4618 }
4619
4620 static int halt_parse_argv(int argc, char *argv[]) {
4621
4622 enum {
4623 ARG_HELP = 0x100,
4624 ARG_HALT,
4625 ARG_REBOOT,
4626 ARG_NO_WALL
4627 };
4628
4629 static const struct option options[] = {
4630 { "help", no_argument, NULL, ARG_HELP },
4631 { "halt", no_argument, NULL, ARG_HALT },
4632 { "poweroff", no_argument, NULL, 'p' },
4633 { "reboot", no_argument, NULL, ARG_REBOOT },
4634 { "force", no_argument, NULL, 'f' },
4635 { "wtmp-only", no_argument, NULL, 'w' },
4636 { "no-wtmp", no_argument, NULL, 'd' },
4637 { "no-sync", no_argument, NULL, 'n' },
4638 { "no-wall", no_argument, NULL, ARG_NO_WALL },
4639 { NULL, 0, NULL, 0 }
4640 };
4641
4642 int c, runlevel;
4643
4644 assert(argc >= 0);
4645 assert(argv);
4646
4647 if (utmp_get_runlevel(&runlevel, NULL) >= 0)
4648 if (runlevel == '0' || runlevel == '6')
4649 arg_immediate = true;
4650
4651 while ((c = getopt_long(argc, argv, "pfwdnih", options, NULL)) >= 0) {
4652 switch (c) {
4653
4654 case ARG_HELP:
4655 halt_help();
4656 return 0;
4657
4658 case ARG_HALT:
4659 arg_action = ACTION_HALT;
4660 break;
4661
4662 case 'p':
4663 if (arg_action != ACTION_REBOOT)
4664 arg_action = ACTION_POWEROFF;
4665 break;
4666
4667 case ARG_REBOOT:
4668 arg_action = ACTION_REBOOT;
4669 break;
4670
4671 case 'f':
4672 arg_immediate = true;
4673 break;
4674
4675 case 'w':
4676 arg_dry = true;
4677 break;
4678
4679 case 'd':
4680 arg_no_wtmp = true;
4681 break;
4682
4683 case 'n':
4684 arg_no_sync = true;
4685 break;
4686
4687 case ARG_NO_WALL:
4688 arg_no_wall = true;
4689 break;
4690
4691 case 'i':
4692 case 'h':
4693 /* Compatibility nops */
4694 break;
4695
4696 case '?':
4697 return -EINVAL;
4698
4699 default:
4700 log_error("Unknown option code %c", c);
4701 return -EINVAL;
4702 }
4703 }
4704
4705 if (optind < argc) {
4706 log_error("Too many arguments.");
4707 return -EINVAL;
4708 }
4709
4710 return 1;
4711 }
4712
4713 static int parse_time_spec(const char *t, usec_t *_u) {
4714 assert(t);
4715 assert(_u);
4716
4717 if (streq(t, "now"))
4718 *_u = 0;
4719 else if (t[0] == '+') {
4720 uint64_t u;
4721
4722 if (safe_atou64(t + 1, &u) < 0)
4723 return -EINVAL;
4724
4725 *_u = now(CLOCK_REALTIME) + USEC_PER_MINUTE * u;
4726 } else {
4727 char *e = NULL;
4728 long hour, minute;
4729 struct tm tm;
4730 time_t s;
4731 usec_t n;
4732
4733 errno = 0;
4734 hour = strtol(t, &e, 10);
4735 if (errno != 0 || *e != ':' || hour < 0 || hour > 23)
4736 return -EINVAL;
4737
4738 minute = strtol(e+1, &e, 10);
4739 if (errno != 0 || *e != 0 || minute < 0 || minute > 59)
4740 return -EINVAL;
4741
4742 n = now(CLOCK_REALTIME);
4743 s = (time_t) (n / USEC_PER_SEC);
4744
4745 zero(tm);
4746 assert_se(localtime_r(&s, &tm));
4747
4748 tm.tm_hour = (int) hour;
4749 tm.tm_min = (int) minute;
4750 tm.tm_sec = 0;
4751
4752 assert_se(s = mktime(&tm));
4753
4754 *_u = (usec_t) s * USEC_PER_SEC;
4755
4756 while (*_u <= n)
4757 *_u += USEC_PER_DAY;
4758 }
4759
4760 return 0;
4761 }
4762
4763 static bool kexec_loaded(void) {
4764 bool loaded = false;
4765 char *s;
4766
4767 if (read_one_line_file("/sys/kernel/kexec_loaded", &s) >= 0) {
4768 if (s[0] == '1')
4769 loaded = true;
4770 free(s);
4771 }
4772 return loaded;
4773 }
4774
4775 static int shutdown_parse_argv(int argc, char *argv[]) {
4776
4777 enum {
4778 ARG_HELP = 0x100,
4779 ARG_NO_WALL
4780 };
4781
4782 static const struct option options[] = {
4783 { "help", no_argument, NULL, ARG_HELP },
4784 { "halt", no_argument, NULL, 'H' },
4785 { "poweroff", no_argument, NULL, 'P' },
4786 { "reboot", no_argument, NULL, 'r' },
4787 { "no-wall", no_argument, NULL, ARG_NO_WALL },
4788 { NULL, 0, NULL, 0 }
4789 };
4790
4791 int c, r;
4792
4793 assert(argc >= 0);
4794 assert(argv);
4795
4796 while ((c = getopt_long(argc, argv, "HPrhkt:afFc", options, NULL)) >= 0) {
4797 switch (c) {
4798
4799 case ARG_HELP:
4800 shutdown_help();
4801 return 0;
4802
4803 case 'H':
4804 arg_action = ACTION_HALT;
4805 break;
4806
4807 case 'P':
4808 arg_action = ACTION_POWEROFF;
4809 break;
4810
4811 case 'r':
4812 if (kexec_loaded())
4813 arg_action = ACTION_KEXEC;
4814 else
4815 arg_action = ACTION_REBOOT;
4816 break;
4817
4818 case 'h':
4819 if (arg_action != ACTION_HALT)
4820 arg_action = ACTION_POWEROFF;
4821 break;
4822
4823 case 'k':
4824 arg_dry = true;
4825 break;
4826
4827 case ARG_NO_WALL:
4828 arg_no_wall = true;
4829 break;
4830
4831 case 't':
4832 case 'a':
4833 /* Compatibility nops */
4834 break;
4835
4836 case 'c':
4837 arg_action = ACTION_CANCEL_SHUTDOWN;
4838 break;
4839
4840 case '?':
4841 return -EINVAL;
4842
4843 default:
4844 log_error("Unknown option code %c", c);
4845 return -EINVAL;
4846 }
4847 }
4848
4849 if (argc > optind) {
4850 if ((r = parse_time_spec(argv[optind], &arg_when)) < 0) {
4851 log_error("Failed to parse time specification: %s", argv[optind]);
4852 return r;
4853 }
4854 } else
4855 arg_when = now(CLOCK_REALTIME) + USEC_PER_MINUTE;
4856
4857 /* We skip the time argument */
4858 if (argc > optind + 1)
4859 arg_wall = argv + optind + 1;
4860
4861 optind = argc;
4862
4863 return 1;
4864 }
4865
4866 static int telinit_parse_argv(int argc, char *argv[]) {
4867
4868 enum {
4869 ARG_HELP = 0x100,
4870 ARG_NO_WALL
4871 };
4872
4873 static const struct option options[] = {
4874 { "help", no_argument, NULL, ARG_HELP },
4875 { "no-wall", no_argument, NULL, ARG_NO_WALL },
4876 { NULL, 0, NULL, 0 }
4877 };
4878
4879 static const struct {
4880 char from;
4881 enum action to;
4882 } table[] = {
4883 { '0', ACTION_POWEROFF },
4884 { '6', ACTION_REBOOT },
4885 { '1', ACTION_RESCUE },
4886 { '2', ACTION_RUNLEVEL2 },
4887 { '3', ACTION_RUNLEVEL3 },
4888 { '4', ACTION_RUNLEVEL4 },
4889 { '5', ACTION_RUNLEVEL5 },
4890 { 's', ACTION_RESCUE },
4891 { 'S', ACTION_RESCUE },
4892 { 'q', ACTION_RELOAD },
4893 { 'Q', ACTION_RELOAD },
4894 { 'u', ACTION_REEXEC },
4895 { 'U', ACTION_REEXEC }
4896 };
4897
4898 unsigned i;
4899 int c;
4900
4901 assert(argc >= 0);
4902 assert(argv);
4903
4904 while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) {
4905 switch (c) {
4906
4907 case ARG_HELP:
4908 telinit_help();
4909 return 0;
4910
4911 case ARG_NO_WALL:
4912 arg_no_wall = true;
4913 break;
4914
4915 case '?':
4916 return -EINVAL;
4917
4918 default:
4919 log_error("Unknown option code %c", c);
4920 return -EINVAL;
4921 }
4922 }
4923
4924 if (optind >= argc) {
4925 telinit_help();
4926 return -EINVAL;
4927 }
4928
4929 if (optind + 1 < argc) {
4930 log_error("Too many arguments.");
4931 return -EINVAL;
4932 }
4933
4934 if (strlen(argv[optind]) != 1) {
4935 log_error("Expected single character argument.");
4936 return -EINVAL;
4937 }
4938
4939 for (i = 0; i < ELEMENTSOF(table); i++)
4940 if (table[i].from == argv[optind][0])
4941 break;
4942
4943 if (i >= ELEMENTSOF(table)) {
4944 log_error("Unknown command %s.", argv[optind]);
4945 return -EINVAL;
4946 }
4947
4948 arg_action = table[i].to;
4949
4950 optind ++;
4951
4952 return 1;
4953 }
4954
4955 static int runlevel_parse_argv(int argc, char *argv[]) {
4956
4957 enum {
4958 ARG_HELP = 0x100,
4959 };
4960
4961 static const struct option options[] = {
4962 { "help", no_argument, NULL, ARG_HELP },
4963 { NULL, 0, NULL, 0 }
4964 };
4965
4966 int c;
4967
4968 assert(argc >= 0);
4969 assert(argv);
4970
4971 while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) {
4972 switch (c) {
4973
4974 case ARG_HELP:
4975 runlevel_help();
4976 return 0;
4977
4978 case '?':
4979 return -EINVAL;
4980
4981 default:
4982 log_error("Unknown option code %c", c);
4983 return -EINVAL;
4984 }
4985 }
4986
4987 if (optind < argc) {
4988 log_error("Too many arguments.");
4989 return -EINVAL;
4990 }
4991
4992 return 1;
4993 }
4994
4995 static int parse_argv(int argc, char *argv[]) {
4996 assert(argc >= 0);
4997 assert(argv);
4998
4999 if (program_invocation_short_name) {
5000
5001 if (strstr(program_invocation_short_name, "halt")) {
5002 arg_action = ACTION_HALT;
5003 return halt_parse_argv(argc, argv);
5004 } else if (strstr(program_invocation_short_name, "poweroff")) {
5005 arg_action = ACTION_POWEROFF;
5006 return halt_parse_argv(argc, argv);
5007 } else if (strstr(program_invocation_short_name, "reboot")) {
5008 if (kexec_loaded())
5009 arg_action = ACTION_KEXEC;
5010 else
5011 arg_action = ACTION_REBOOT;
5012 return halt_parse_argv(argc, argv);
5013 } else if (strstr(program_invocation_short_name, "shutdown")) {
5014 arg_action = ACTION_POWEROFF;
5015 return shutdown_parse_argv(argc, argv);
5016 } else if (strstr(program_invocation_short_name, "init")) {
5017
5018 if (sd_booted() > 0) {
5019 arg_action = ACTION_INVALID;
5020 return telinit_parse_argv(argc, argv);
5021 } else {
5022 /* Hmm, so some other init system is
5023 * running, we need to forward this
5024 * request to it. For now we simply
5025 * guess that it is Upstart. */
5026
5027 execv("/lib/upstart/telinit", argv);
5028
5029 log_error("Couldn't find an alternative telinit implementation to spawn.");
5030 return -EIO;
5031 }
5032
5033 } else if (strstr(program_invocation_short_name, "runlevel")) {
5034 arg_action = ACTION_RUNLEVEL;
5035 return runlevel_parse_argv(argc, argv);
5036 }
5037 }
5038
5039 arg_action = ACTION_SYSTEMCTL;
5040 return systemctl_parse_argv(argc, argv);
5041 }
5042
5043 static int action_to_runlevel(void) {
5044
5045 static const char table[_ACTION_MAX] = {
5046 [ACTION_HALT] = '0',
5047 [ACTION_POWEROFF] = '0',
5048 [ACTION_REBOOT] = '6',
5049 [ACTION_RUNLEVEL2] = '2',
5050 [ACTION_RUNLEVEL3] = '3',
5051 [ACTION_RUNLEVEL4] = '4',
5052 [ACTION_RUNLEVEL5] = '5',
5053 [ACTION_RESCUE] = '1'
5054 };
5055
5056 assert(arg_action < _ACTION_MAX);
5057
5058 return table[arg_action];
5059 }
5060
5061 static int talk_upstart(void) {
5062 DBusMessage *m = NULL, *reply = NULL;
5063 DBusError error;
5064 int previous, rl, r;
5065 char
5066 env1_buf[] = "RUNLEVEL=X",
5067 env2_buf[] = "PREVLEVEL=X";
5068 char *env1 = env1_buf, *env2 = env2_buf;
5069 const char *emit = "runlevel";
5070 dbus_bool_t b_false = FALSE;
5071 DBusMessageIter iter, sub;
5072 DBusConnection *bus;
5073
5074 dbus_error_init(&error);
5075
5076 if (!(rl = action_to_runlevel()))
5077 return 0;
5078
5079 if (utmp_get_runlevel(&previous, NULL) < 0)
5080 previous = 'N';
5081
5082 if (!(bus = dbus_connection_open_private("unix:abstract=/com/ubuntu/upstart", &error))) {
5083 if (dbus_error_has_name(&error, DBUS_ERROR_NO_SERVER)) {
5084 r = 0;
5085 goto finish;
5086 }
5087
5088 log_error("Failed to connect to Upstart bus: %s", bus_error_message(&error));
5089 r = -EIO;
5090 goto finish;
5091 }
5092
5093 if ((r = bus_check_peercred(bus)) < 0) {
5094 log_error("Failed to verify owner of bus.");
5095 goto finish;
5096 }
5097
5098 if (!(m = dbus_message_new_method_call(
5099 "com.ubuntu.Upstart",
5100 "/com/ubuntu/Upstart",
5101 "com.ubuntu.Upstart0_6",
5102 "EmitEvent"))) {
5103
5104 log_error("Could not allocate message.");
5105 r = -ENOMEM;
5106 goto finish;
5107 }
5108
5109 dbus_message_iter_init_append(m, &iter);
5110
5111 env1_buf[sizeof(env1_buf)-2] = rl;
5112 env2_buf[sizeof(env2_buf)-2] = previous;
5113
5114 if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &emit) ||
5115 !dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "s", &sub) ||
5116 !dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &env1) ||
5117 !dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &env2) ||
5118 !dbus_message_iter_close_container(&iter, &sub) ||
5119 !dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &b_false)) {
5120 log_error("Could not append arguments to message.");
5121 r = -ENOMEM;
5122 goto finish;
5123 }
5124
5125 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
5126
5127 if (error_is_no_service(&error)) {
5128 r = -EADDRNOTAVAIL;
5129 goto finish;
5130 }
5131
5132 log_error("Failed to issue method call: %s", bus_error_message(&error));
5133 r = -EIO;
5134 goto finish;
5135 }
5136
5137 r = 0;
5138
5139 finish:
5140 if (m)
5141 dbus_message_unref(m);
5142
5143 if (reply)
5144 dbus_message_unref(reply);
5145
5146 if (bus) {
5147 dbus_connection_flush(bus);
5148 dbus_connection_close(bus);
5149 dbus_connection_unref(bus);
5150 }
5151
5152 dbus_error_free(&error);
5153
5154 return r;
5155 }
5156
5157 static int talk_initctl(void) {
5158 struct init_request request;
5159 int r, fd;
5160 char rl;
5161
5162 if (!(rl = action_to_runlevel()))
5163 return 0;
5164
5165 zero(request);
5166 request.magic = INIT_MAGIC;
5167 request.sleeptime = 0;
5168 request.cmd = INIT_CMD_RUNLVL;
5169 request.runlevel = rl;
5170
5171 if ((fd = open(INIT_FIFO, O_WRONLY|O_NDELAY|O_CLOEXEC|O_NOCTTY)) < 0) {
5172
5173 if (errno == ENOENT)
5174 return 0;
5175
5176 log_error("Failed to open "INIT_FIFO": %m");
5177 return -errno;
5178 }
5179
5180 errno = 0;
5181 r = loop_write(fd, &request, sizeof(request), false) != sizeof(request);
5182 close_nointr_nofail(fd);
5183
5184 if (r < 0) {
5185 log_error("Failed to write to "INIT_FIFO": %m");
5186 return errno ? -errno : -EIO;
5187 }
5188
5189 return 1;
5190 }
5191
5192 static int systemctl_main(DBusConnection *bus, int argc, char *argv[], DBusError *error) {
5193
5194 static const struct {
5195 const char* verb;
5196 const enum {
5197 MORE,
5198 LESS,
5199 EQUAL
5200 } argc_cmp;
5201 const int argc;
5202 int (* const dispatch)(DBusConnection *bus, char **args, unsigned n);
5203 } verbs[] = {
5204 { "list-units", LESS, 1, list_units },
5205 { "list-jobs", EQUAL, 1, list_jobs },
5206 { "clear-jobs", EQUAL, 1, daemon_reload },
5207 { "load", MORE, 2, load_unit },
5208 { "cancel", MORE, 2, cancel_job },
5209 { "start", MORE, 2, start_unit },
5210 { "stop", MORE, 2, start_unit },
5211 { "reload", MORE, 2, start_unit },
5212 { "restart", MORE, 2, start_unit },
5213 { "try-restart", MORE, 2, start_unit },
5214 { "reload-or-restart", MORE, 2, start_unit },
5215 { "reload-or-try-restart", MORE, 2, start_unit },
5216 { "force-reload", MORE, 2, start_unit }, /* For compatibility with SysV */
5217 { "condreload", MORE, 2, start_unit }, /* For compatibility with ALTLinux */
5218 { "condrestart", MORE, 2, start_unit }, /* For compatibility with RH */
5219 { "isolate", EQUAL, 2, start_unit },
5220 { "kill", MORE, 2, kill_unit },
5221 { "is-active", MORE, 2, check_unit },
5222 { "check", MORE, 2, check_unit },
5223 { "show", MORE, 1, show },
5224 { "status", MORE, 2, show },
5225 { "monitor", EQUAL, 1, monitor },
5226 { "dump", EQUAL, 1, dump },
5227 { "dot", EQUAL, 1, dot },
5228 { "snapshot", LESS, 2, snapshot },
5229 { "delete", MORE, 2, delete_snapshot },
5230 { "daemon-reload", EQUAL, 1, daemon_reload },
5231 { "daemon-reexec", EQUAL, 1, daemon_reload },
5232 { "show-environment", EQUAL, 1, show_enviroment },
5233 { "set-environment", MORE, 2, set_environment },
5234 { "unset-environment", MORE, 2, set_environment },
5235 { "halt", EQUAL, 1, start_special },
5236 { "poweroff", EQUAL, 1, start_special },
5237 { "reboot", EQUAL, 1, start_special },
5238 { "kexec", EQUAL, 1, start_special },
5239 { "default", EQUAL, 1, start_special },
5240 { "rescue", EQUAL, 1, start_special },
5241 { "emergency", EQUAL, 1, start_special },
5242 { "exit", EQUAL, 1, start_special },
5243 { "reset-failed", MORE, 1, reset_failed },
5244 { "enable", MORE, 2, enable_unit },
5245 { "disable", MORE, 2, enable_unit },
5246 { "is-enabled", MORE, 2, enable_unit }
5247 };
5248
5249 int left;
5250 unsigned i;
5251
5252 assert(argc >= 0);
5253 assert(argv);
5254 assert(error);
5255
5256 left = argc - optind;
5257
5258 if (left <= 0)
5259 /* Special rule: no arguments means "list-units" */
5260 i = 0;
5261 else {
5262 if (streq(argv[optind], "help")) {
5263 systemctl_help();
5264 return 0;
5265 }
5266
5267 for (i = 0; i < ELEMENTSOF(verbs); i++)
5268 if (streq(argv[optind], verbs[i].verb))
5269 break;
5270
5271 if (i >= ELEMENTSOF(verbs)) {
5272 log_error("Unknown operation %s", argv[optind]);
5273 return -EINVAL;
5274 }
5275 }
5276
5277 switch (verbs[i].argc_cmp) {
5278
5279 case EQUAL:
5280 if (left != verbs[i].argc) {
5281 log_error("Invalid number of arguments.");
5282 return -EINVAL;
5283 }
5284
5285 break;
5286
5287 case MORE:
5288 if (left < verbs[i].argc) {
5289 log_error("Too few arguments.");
5290 return -EINVAL;
5291 }
5292
5293 break;
5294
5295 case LESS:
5296 if (left > verbs[i].argc) {
5297 log_error("Too many arguments.");
5298 return -EINVAL;
5299 }
5300
5301 break;
5302
5303 default:
5304 assert_not_reached("Unknown comparison operator.");
5305 }
5306
5307 /* Require a bus connection for all operations but
5308 * enable/disable */
5309 if (!streq(verbs[i].verb, "enable") &&
5310 !streq(verbs[i].verb, "disable") &&
5311 !bus) {
5312 log_error("Failed to get D-Bus connection: %s", error->message);
5313 return -EIO;
5314 }
5315
5316 return verbs[i].dispatch(bus, argv + optind, left);
5317 }
5318
5319 static int send_shutdownd(usec_t t, char mode, bool warn, const char *message) {
5320 int fd = -1;
5321 struct msghdr msghdr;
5322 struct iovec iovec;
5323 union sockaddr_union sockaddr;
5324 struct shutdownd_command c;
5325
5326 zero(c);
5327 c.elapse = t;
5328 c.mode = mode;
5329 c.warn_wall = warn;
5330
5331 if (message)
5332 strncpy(c.wall_message, message, sizeof(c.wall_message));
5333
5334 if ((fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0)) < 0)
5335 return -errno;
5336
5337 zero(sockaddr);
5338 sockaddr.sa.sa_family = AF_UNIX;
5339 sockaddr.un.sun_path[0] = 0;
5340 strncpy(sockaddr.un.sun_path+1, "/org/freedesktop/systemd1/shutdownd", sizeof(sockaddr.un.sun_path)-1);
5341
5342 zero(iovec);
5343 iovec.iov_base = (char*) &c;
5344 iovec.iov_len = sizeof(c);
5345
5346 zero(msghdr);
5347 msghdr.msg_name = &sockaddr;
5348 msghdr.msg_namelen = offsetof(struct sockaddr_un, sun_path) + 1 + sizeof("/org/freedesktop/systemd1/shutdownd") - 1;
5349
5350 msghdr.msg_iov = &iovec;
5351 msghdr.msg_iovlen = 1;
5352
5353 if (sendmsg(fd, &msghdr, MSG_NOSIGNAL) < 0) {
5354 close_nointr_nofail(fd);
5355 return -errno;
5356 }
5357
5358 close_nointr_nofail(fd);
5359 return 0;
5360 }
5361
5362 static int reload_with_fallback(DBusConnection *bus) {
5363
5364 if (bus) {
5365 /* First, try systemd via D-Bus. */
5366 if (daemon_reload(bus, NULL, 0) > 0)
5367 return 0;
5368 }
5369
5370 /* Nothing else worked, so let's try signals */
5371 assert(arg_action == ACTION_RELOAD || arg_action == ACTION_REEXEC);
5372
5373 if (kill(1, arg_action == ACTION_RELOAD ? SIGHUP : SIGTERM) < 0) {
5374 log_error("kill() failed: %m");
5375 return -errno;
5376 }
5377
5378 return 0;
5379 }
5380
5381 static int start_with_fallback(DBusConnection *bus) {
5382
5383 if (bus) {
5384 /* First, try systemd via D-Bus. */
5385 if (start_unit(bus, NULL, 0) >= 0)
5386 goto done;
5387 }
5388
5389 /* Hmm, talking to systemd via D-Bus didn't work. Then
5390 * let's try to talk to Upstart via D-Bus. */
5391 if (talk_upstart() > 0)
5392 goto done;
5393
5394 /* Nothing else worked, so let's try
5395 * /dev/initctl */
5396 if (talk_initctl() > 0)
5397 goto done;
5398
5399 log_error("Failed to talk to init daemon.");
5400 return -EIO;
5401
5402 done:
5403 warn_wall(arg_action);
5404 return 0;
5405 }
5406
5407 static int halt_main(DBusConnection *bus) {
5408 int r;
5409
5410 if (geteuid() != 0) {
5411 log_error("Must be root.");
5412 return -EPERM;
5413 }
5414
5415 if (arg_when > 0) {
5416 char *m;
5417 char date[FORMAT_TIMESTAMP_MAX];
5418
5419 m = strv_join(arg_wall, " ");
5420 r = send_shutdownd(arg_when,
5421 arg_action == ACTION_HALT ? 'H' :
5422 arg_action == ACTION_POWEROFF ? 'P' :
5423 'r',
5424 !arg_no_wall,
5425 m);
5426 free(m);
5427
5428 if (r < 0)
5429 log_warning("Failed to talk to shutdownd, proceeding with immediate shutdown: %s", strerror(-r));
5430 else {
5431 log_info("Shutdown scheduled for %s, use 'shutdown -c' to cancel.",
5432 format_timestamp(date, sizeof(date), arg_when));
5433 return 0;
5434 }
5435 }
5436
5437 if (!arg_dry && !arg_immediate)
5438 return start_with_fallback(bus);
5439
5440 if (!arg_no_wtmp) {
5441 if (sd_booted() > 0)
5442 log_debug("Not writing utmp record, assuming that systemd-update-utmp is used.");
5443 else if ((r = utmp_put_shutdown(0)) < 0)
5444 log_warning("Failed to write utmp record: %s", strerror(-r));
5445 }
5446
5447 if (!arg_no_sync)
5448 sync();
5449
5450 if (arg_dry)
5451 return 0;
5452
5453 /* Make sure C-A-D is handled by the kernel from this
5454 * point on... */
5455 reboot(RB_ENABLE_CAD);
5456
5457 switch (arg_action) {
5458
5459 case ACTION_HALT:
5460 log_info("Halting.");
5461 reboot(RB_HALT_SYSTEM);
5462 break;
5463
5464 case ACTION_POWEROFF:
5465 log_info("Powering off.");
5466 reboot(RB_POWER_OFF);
5467 break;
5468
5469 case ACTION_REBOOT:
5470 log_info("Rebooting.");
5471 reboot(RB_AUTOBOOT);
5472 break;
5473
5474 default:
5475 assert_not_reached("Unknown halt action.");
5476 }
5477
5478 /* We should never reach this. */
5479 return -ENOSYS;
5480 }
5481
5482 static int runlevel_main(void) {
5483 int r, runlevel, previous;
5484
5485 if ((r = utmp_get_runlevel(&runlevel, &previous)) < 0) {
5486 printf("unknown\n");
5487 return r;
5488 }
5489
5490 printf("%c %c\n",
5491 previous <= 0 ? 'N' : previous,
5492 runlevel <= 0 ? 'N' : runlevel);
5493
5494 return 0;
5495 }
5496
5497 static void pager_open(void) {
5498 int fd[2];
5499 const char *pager;
5500 pid_t parent_pid;
5501
5502 if (pager_pid > 0)
5503 return;
5504
5505 if (!on_tty() || arg_no_pager)
5506 return;
5507
5508 if ((pager = getenv("PAGER")))
5509 if (!*pager || streq(pager, "cat"))
5510 return;
5511
5512 /* Determine and cache number of columns before we spawn the
5513 * pager so that we get the value from the actual tty */
5514 columns();
5515
5516 if (pipe(fd) < 0) {
5517 log_error("Failed to create pager pipe: %m");
5518 return;
5519 }
5520
5521 parent_pid = getpid();
5522
5523 pager_pid = fork();
5524 if (pager_pid < 0) {
5525 log_error("Failed to fork pager: %m");
5526 close_pipe(fd);
5527 return;
5528 }
5529
5530 /* In the child start the pager */
5531 if (pager_pid == 0) {
5532
5533 dup2(fd[0], STDIN_FILENO);
5534 close_pipe(fd);
5535
5536 setenv("LESS", "FRSX", 0);
5537
5538 /* Make sure the pager goes away when the parent dies */
5539 if (prctl(PR_SET_PDEATHSIG, SIGTERM) < 0)
5540 _exit(EXIT_FAILURE);
5541
5542 /* Check whether our parent died before we were able
5543 * to set the death signal */
5544 if (getppid() != parent_pid)
5545 _exit(EXIT_SUCCESS);
5546
5547 if (pager) {
5548 execlp(pager, pager, NULL);
5549 execl("/bin/sh", "sh", "-c", pager, NULL);
5550 } else {
5551 /* Debian's alternatives command for pagers is
5552 * called 'pager'. Note that we do not call
5553 * sensible-pagers here, since that is just a
5554 * shell script that implements a logic that
5555 * is similar to this one anyway, but is
5556 * Debian-specific. */
5557 execlp("pager", "pager", NULL);
5558
5559 execlp("less", "less", NULL);
5560 execlp("more", "more", NULL);
5561 }
5562
5563 log_error("Unable to execute pager: %m");
5564 _exit(EXIT_FAILURE);
5565 }
5566
5567 /* Return in the parent */
5568 if (dup2(fd[1], STDOUT_FILENO) < 0)
5569 log_error("Failed to duplicate pager pipe: %m");
5570
5571 close_pipe(fd);
5572 }
5573
5574 static void pager_close(void) {
5575 siginfo_t dummy;
5576
5577 if (pager_pid <= 0)
5578 return;
5579
5580 /* Inform pager that we are done */
5581 fclose(stdout);
5582 kill(pager_pid, SIGCONT);
5583 wait_for_terminate(pager_pid, &dummy);
5584 pager_pid = 0;
5585 }
5586
5587 static void agent_close(void) {
5588 siginfo_t dummy;
5589
5590 if (agent_pid <= 0)
5591 return;
5592
5593 /* Inform agent that we are done */
5594 kill(agent_pid, SIGTERM);
5595 kill(agent_pid, SIGCONT);
5596 wait_for_terminate(agent_pid, &dummy);
5597 agent_pid = 0;
5598 }
5599
5600 int main(int argc, char*argv[]) {
5601 int r, retval = EXIT_FAILURE;
5602 DBusConnection *bus = NULL;
5603 DBusError error;
5604
5605 dbus_error_init(&error);
5606
5607 log_parse_environment();
5608 log_open();
5609
5610 if ((r = parse_argv(argc, argv)) < 0)
5611 goto finish;
5612 else if (r == 0) {
5613 retval = EXIT_SUCCESS;
5614 goto finish;
5615 }
5616
5617 /* /sbin/runlevel doesn't need to communicate via D-Bus, so
5618 * let's shortcut this */
5619 if (arg_action == ACTION_RUNLEVEL) {
5620 r = runlevel_main();
5621 retval = r < 0 ? EXIT_FAILURE : r;
5622 goto finish;
5623 }
5624
5625 bus_connect(arg_user ? DBUS_BUS_SESSION : DBUS_BUS_SYSTEM, &bus, &private_bus, &error);
5626
5627 switch (arg_action) {
5628
5629 case ACTION_SYSTEMCTL:
5630 r = systemctl_main(bus, argc, argv, &error);
5631 break;
5632
5633 case ACTION_HALT:
5634 case ACTION_POWEROFF:
5635 case ACTION_REBOOT:
5636 case ACTION_KEXEC:
5637 r = halt_main(bus);
5638 break;
5639
5640 case ACTION_RUNLEVEL2:
5641 case ACTION_RUNLEVEL3:
5642 case ACTION_RUNLEVEL4:
5643 case ACTION_RUNLEVEL5:
5644 case ACTION_RESCUE:
5645 case ACTION_EMERGENCY:
5646 case ACTION_DEFAULT:
5647 r = start_with_fallback(bus);
5648 break;
5649
5650 case ACTION_RELOAD:
5651 case ACTION_REEXEC:
5652 r = reload_with_fallback(bus);
5653 break;
5654
5655 case ACTION_CANCEL_SHUTDOWN:
5656 r = send_shutdownd(0, 0, false, NULL);
5657 break;
5658
5659 case ACTION_INVALID:
5660 case ACTION_RUNLEVEL:
5661 default:
5662 assert_not_reached("Unknown action");
5663 }
5664
5665 retval = r < 0 ? EXIT_FAILURE : r;
5666
5667 finish:
5668
5669 if (bus) {
5670 dbus_connection_flush(bus);
5671 dbus_connection_close(bus);
5672 dbus_connection_unref(bus);
5673 }
5674
5675 dbus_error_free(&error);
5676
5677 dbus_shutdown();
5678
5679 strv_free(arg_property);
5680
5681 pager_close();
5682 agent_close();
5683
5684 return retval;
5685 }
Unnamed repository; edit this file 'description' to name the repository.