chiark / gitweb /
systemctl: refactor show()
[elogind.git] / src / systemctl / systemctl.c
1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
2
3 /***
4   This file is part of systemd.
5
6   Copyright 2010 Lennart Poettering
7   Copyright 2013 Marc-Antoine Perennou
8
9   systemd is free software; you can redistribute it and/or modify it
10   under the terms of the GNU Lesser General Public License as published by
11   the Free Software Foundation; either version 2.1 of the License, or
12   (at your option) any later version.
13
14   systemd is distributed in the hope that it will be useful, but
15   WITHOUT ANY WARRANTY; without even the implied warranty of
16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17   Lesser General Public License for more details.
18
19   You should have received a copy of the GNU Lesser General Public License
20   along with systemd; If not, see <http://www.gnu.org/licenses/>.
21 ***/
22
23 #include <sys/reboot.h>
24 #include <linux/reboot.h>
25 #include <sys/syscall.h>
26 #include <stdio.h>
27 #include <getopt.h>
28 #include <locale.h>
29 #include <stdbool.h>
30 #include <string.h>
31 #include <errno.h>
32 #include <sys/ioctl.h>
33 #include <termios.h>
34 #include <unistd.h>
35 #include <fcntl.h>
36 #include <sys/socket.h>
37 #include <sys/stat.h>
38 #include <stddef.h>
39 #include <sys/prctl.h>
40
41 #include "sd-daemon.h"
42 #include "sd-shutdown.h"
43 #include "sd-login.h"
44 #include "sd-bus.h"
45 #include "log.h"
46 #include "util.h"
47 #include "macro.h"
48 #include "set.h"
49 #include "utmp-wtmp.h"
50 #include "special.h"
51 #include "initreq.h"
52 #include "path-util.h"
53 #include "strv.h"
54 #include "cgroup-show.h"
55 #include "cgroup-util.h"
56 #include "list.h"
57 #include "path-lookup.h"
58 #include "conf-parser.h"
59 #include "exit-status.h"
60 #include "bus-errors.h"
61 #include "build.h"
62 #include "unit-name.h"
63 #include "pager.h"
64 #include "spawn-ask-password-agent.h"
65 #include "spawn-polkit-agent.h"
66 #include "install.h"
67 #include "logs-show.h"
68 #include "socket-util.h"
69 #include "fileio.h"
70 #include "bus-util.h"
71 #include "bus-message.h"
72 #include "bus-error.h"
73 #include "bus-errors.h"
74
75 static char **arg_types = NULL;
76 static char **arg_states = NULL;
77 static char **arg_properties = NULL;
78 static bool arg_all = false;
79 static bool original_stdout_is_tty;
80 static enum dependency {
81         DEPENDENCY_FORWARD,
82         DEPENDENCY_REVERSE,
83         DEPENDENCY_AFTER,
84         DEPENDENCY_BEFORE,
85 } arg_dependency = DEPENDENCY_FORWARD;
86 static const char *arg_job_mode = "replace";
87 static UnitFileScope arg_scope = UNIT_FILE_SYSTEM;
88 static bool arg_no_block = false;
89 static bool arg_no_legend = false;
90 static bool arg_no_pager = false;
91 static bool arg_no_wtmp = false;
92 static bool arg_no_wall = false;
93 static bool arg_no_reload = false;
94 static bool arg_show_types = false;
95 static bool arg_ignore_inhibitors = false;
96 static bool arg_dry = false;
97 static bool arg_quiet = false;
98 static bool arg_full = false;
99 static int arg_force = 0;
100 static bool arg_ask_password = true;
101 static bool arg_runtime = false;
102 static char **arg_wall = NULL;
103 static const char *arg_kill_who = NULL;
104 static int arg_signal = SIGTERM;
105 static const char *arg_root = NULL;
106 static usec_t arg_when = 0;
107 static enum action {
108         _ACTION_INVALID,
109         ACTION_SYSTEMCTL,
110         ACTION_HALT,
111         ACTION_POWEROFF,
112         ACTION_REBOOT,
113         ACTION_KEXEC,
114         ACTION_EXIT,
115         ACTION_SUSPEND,
116         ACTION_HIBERNATE,
117         ACTION_HYBRID_SLEEP,
118         ACTION_RUNLEVEL2,
119         ACTION_RUNLEVEL3,
120         ACTION_RUNLEVEL4,
121         ACTION_RUNLEVEL5,
122         ACTION_RESCUE,
123         ACTION_EMERGENCY,
124         ACTION_DEFAULT,
125         ACTION_RELOAD,
126         ACTION_REEXEC,
127         ACTION_RUNLEVEL,
128         ACTION_CANCEL_SHUTDOWN,
129         _ACTION_MAX
130 } arg_action = ACTION_SYSTEMCTL;
131 static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;
132 static char *arg_host = NULL;
133 static unsigned arg_lines = 10;
134 static OutputMode arg_output = OUTPUT_SHORT;
135 static bool arg_plain = false;
136
137 static int daemon_reload(sd_bus *bus, char **args);
138 static int halt_now(enum action a);
139
140 static int check_one_unit(sd_bus *bus, const char *name, const char *good_states, bool quiet);
141
142 static void pager_open_if_enabled(void) {
143
144         if (arg_no_pager)
145                 return;
146
147         pager_open(false);
148 }
149
150 static void ask_password_agent_open_if_enabled(void) {
151
152         /* Open the password agent as a child process if necessary */
153
154         if (!arg_ask_password)
155                 return;
156
157         if (arg_scope != UNIT_FILE_SYSTEM)
158                 return;
159
160         if (arg_transport != BUS_TRANSPORT_LOCAL)
161                 return;
162
163         ask_password_agent_open();
164 }
165
166 #ifdef HAVE_LOGIND
167 static void polkit_agent_open_if_enabled(void) {
168
169         /* Open the polkit agent as a child process if necessary */
170
171         if (!arg_ask_password)
172                 return;
173
174         if (arg_scope != UNIT_FILE_SYSTEM)
175                 return;
176
177         if (arg_transport != BUS_TRANSPORT_LOCAL)
178                 return;
179
180         polkit_agent_open();
181 }
182 #endif
183
184 static int translate_bus_error_to_exit_status(int r, const sd_bus_error *error) {
185         assert(error);
186
187         if (!sd_bus_error_is_set(error))
188                 return r;
189
190         if (sd_bus_error_has_name(error, SD_BUS_ERROR_ACCESS_DENIED) ||
191             sd_bus_error_has_name(error, BUS_ERROR_ONLY_BY_DEPENDENCY) ||
192             sd_bus_error_has_name(error, BUS_ERROR_NO_ISOLATION) ||
193             sd_bus_error_has_name(error, BUS_ERROR_TRANSACTION_IS_DESTRUCTIVE))
194                 return EXIT_NOPERMISSION;
195
196         if (sd_bus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT))
197                 return EXIT_NOTINSTALLED;
198
199         if (sd_bus_error_has_name(error, BUS_ERROR_JOB_TYPE_NOT_APPLICABLE) ||
200             sd_bus_error_has_name(error, SD_BUS_ERROR_NOT_SUPPORTED))
201                 return EXIT_NOTIMPLEMENTED;
202
203         if (sd_bus_error_has_name(error, BUS_ERROR_LOAD_FAILED))
204                 return EXIT_NOTCONFIGURED;
205
206         if (r != 0)
207                 return r;
208
209         return EXIT_FAILURE;
210 }
211
212 static void warn_wall(enum action a) {
213         static const char *table[_ACTION_MAX] = {
214                 [ACTION_HALT]            = "The system is going down for system halt NOW!",
215                 [ACTION_REBOOT]          = "The system is going down for reboot NOW!",
216                 [ACTION_POWEROFF]        = "The system is going down for power-off NOW!",
217                 [ACTION_KEXEC]           = "The system is going down for kexec reboot NOW!",
218                 [ACTION_RESCUE]          = "The system is going down to rescue mode NOW!",
219                 [ACTION_EMERGENCY]       = "The system is going down to emergency mode NOW!",
220                 [ACTION_CANCEL_SHUTDOWN] = "The system shutdown has been cancelled NOW!"
221         };
222
223         if (arg_no_wall)
224                 return;
225
226         if (arg_wall) {
227                 _cleanup_free_ char *p;
228
229                 p = strv_join(arg_wall, " ");
230                 if (!p) {
231                         log_oom();
232                         return;
233                 }
234
235                 if (*p) {
236                         utmp_wall(p, NULL);
237                         return;
238                 }
239         }
240
241         if (!table[a])
242                 return;
243
244         utmp_wall(table[a], NULL);
245 }
246
247 static bool avoid_bus(void) {
248
249         if (running_in_chroot() > 0)
250                 return true;
251
252         if (sd_booted() <= 0)
253                 return true;
254
255         if (!isempty(arg_root))
256                 return true;
257
258         if (arg_scope == UNIT_FILE_GLOBAL)
259                 return true;
260
261         return false;
262 }
263
264 static int compare_unit_info(const void *a, const void *b) {
265         const UnitInfo *u = a, *v = b;
266         const char *d1, *d2;
267
268         d1 = strrchr(u->id, '.');
269         d2 = strrchr(v->id, '.');
270
271         if (d1 && d2) {
272                 int r;
273
274                 r = strcasecmp(d1, d2);
275                 if (r != 0)
276                         return r;
277         }
278
279         return strcasecmp(u->id, v->id);
280 }
281
282 static bool output_show_unit(const UnitInfo *u) {
283         const char *dot;
284
285         if (!strv_isempty(arg_states))
286                 return
287                         strv_contains(arg_states, u->load_state) ||
288                         strv_contains(arg_states, u->sub_state) ||
289                         strv_contains(arg_states, u->active_state);
290
291         return (!arg_types || ((dot = strrchr(u->id, '.')) &&
292                                strv_find(arg_types, dot+1))) &&
293                 (arg_all || !(streq(u->active_state, "inactive")
294                               || u->following[0]) || u->job_id > 0);
295 }
296
297 static void output_units_list(const UnitInfo *unit_infos, unsigned c) {
298         unsigned id_len, max_id_len, load_len, active_len, sub_len, job_len, desc_len;
299         const UnitInfo *u;
300         unsigned n_shown = 0;
301         int job_count = 0;
302
303         max_id_len = sizeof("UNIT")-1;
304         load_len = sizeof("LOAD")-1;
305         active_len = sizeof("ACTIVE")-1;
306         sub_len = sizeof("SUB")-1;
307         job_len = sizeof("JOB")-1;
308         desc_len = 0;
309
310         for (u = unit_infos; u < unit_infos + c; u++) {
311                 if (!output_show_unit(u))
312                         continue;
313
314                 max_id_len = MAX(max_id_len, strlen(u->id));
315                 load_len = MAX(load_len, strlen(u->load_state));
316                 active_len = MAX(active_len, strlen(u->active_state));
317                 sub_len = MAX(sub_len, strlen(u->sub_state));
318
319                 if (u->job_id != 0) {
320                         job_len = MAX(job_len, strlen(u->job_type));
321                         job_count++;
322                 }
323         }
324
325         if (!arg_full && original_stdout_is_tty) {
326                 unsigned basic_len;
327
328                 id_len = MIN(max_id_len, 25u);
329                 basic_len = 5 + id_len + 5 + active_len + sub_len;
330
331                 if (job_count)
332                         basic_len += job_len + 1;
333
334                 if (basic_len < (unsigned) columns()) {
335                         unsigned extra_len, incr;
336                         extra_len = columns() - basic_len;
337
338                         /* Either UNIT already got 25, or is fully satisfied.
339                          * Grant up to 25 to DESC now. */
340                         incr = MIN(extra_len, 25u);
341                         desc_len += incr;
342                         extra_len -= incr;
343
344                         /* split the remaining space between UNIT and DESC,
345                          * but do not give UNIT more than it needs. */
346                         if (extra_len > 0) {
347                                 incr = MIN(extra_len / 2, max_id_len - id_len);
348                                 id_len += incr;
349                                 desc_len += extra_len - incr;
350                         }
351                 }
352         } else
353                 id_len = max_id_len;
354
355         for (u = unit_infos; u < unit_infos + c; u++) {
356                 _cleanup_free_ char *e = NULL;
357                 const char *on_loaded, *off_loaded, *on = "";
358                 const char *on_active, *off_active, *off = "";
359
360                 if (!output_show_unit(u))
361                         continue;
362
363                 if (!n_shown && !arg_no_legend) {
364                         printf("%-*s %-*s %-*s %-*s ",
365                                id_len, "UNIT",
366                                load_len, "LOAD",
367                                active_len, "ACTIVE",
368                                sub_len, "SUB");
369
370                         if (job_count)
371                                 printf("%-*s ", job_len, "JOB");
372
373                         if (!arg_full && arg_no_pager)
374                                 printf("%.*s\n", desc_len, "DESCRIPTION");
375                         else
376                                 printf("%s\n", "DESCRIPTION");
377                 }
378
379                 n_shown++;
380
381                 if (streq(u->load_state, "error") ||
382                     streq(u->load_state, "not-found")) {
383                         on_loaded = on = ansi_highlight_red();
384                         off_loaded = off = ansi_highlight_off();
385                 } else
386                         on_loaded = off_loaded = "";
387
388                 if (streq(u->active_state, "failed")) {
389                         on_active = on = ansi_highlight_red();
390                         off_active = off = ansi_highlight_off();
391                 } else
392                         on_active = off_active = "";
393
394                 e = arg_full ? NULL : ellipsize(u->id, id_len, 33);
395
396                 printf("%s%-*s%s %s%-*s%s %s%-*s %-*s%s %-*s",
397                        on, id_len, e ? e : u->id, off,
398                        on_loaded, load_len, u->load_state, off_loaded,
399                        on_active, active_len, u->active_state,
400                        sub_len, u->sub_state, off_active,
401                        job_count ? job_len + 1 : 0, u->job_id ? u->job_type : "");
402
403                 if (desc_len > 0)
404                         printf("%.*s\n", desc_len, u->description);
405                 else
406                         printf("%s\n", u->description);
407         }
408
409         if (!arg_no_legend) {
410                 const char *on, *off;
411
412                 if (n_shown) {
413                         printf("\nLOAD   = Reflects whether the unit definition was properly loaded.\n"
414                                "ACTIVE = The high-level unit activation state, i.e. generalization of SUB.\n"
415                                "SUB    = The low-level unit activation state, values depend on unit type.\n");
416                         if (job_count)
417                                 printf("JOB    = Pending job for the unit.\n");
418                         puts("");
419                         on = ansi_highlight();
420                         off = ansi_highlight_off();
421                 } else {
422                         on = ansi_highlight_red();
423                         off = ansi_highlight_off();
424                 }
425
426                 if (arg_all)
427                         printf("%s%u loaded units listed.%s\n"
428                                "To show all installed unit files use 'systemctl list-unit-files'.\n",
429                                on, n_shown, off);
430                 else
431                         printf("%s%u loaded units listed.%s Pass --all to see loaded but inactive units, too.\n"
432                                "To show all installed unit files use 'systemctl list-unit-files'.\n",
433                                on, n_shown, off);
434         }
435 }
436
437 static int get_unit_list(
438                 sd_bus *bus,
439                 sd_bus_message **_reply,
440                 UnitInfo **_unit_infos) {
441
442         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
443         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
444         _cleanup_free_ UnitInfo *unit_infos = NULL;
445         size_t size = 0;
446         int r, c = 0;
447         UnitInfo u;
448
449         assert(bus);
450         assert(_reply);
451         assert(_unit_infos);
452
453         r = sd_bus_call_method(
454                         bus,
455                         "org.freedesktop.systemd1",
456                         "/org/freedesktop/systemd1",
457                         "org.freedesktop.systemd1.Manager",
458                         "ListUnits",
459                         &error,
460                         &reply,
461                         NULL);
462         if (r < 0) {
463                 log_error("Failed to list units: %s", bus_error_message(&error, r));
464                 return r;
465         }
466
467         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssssouso)");
468         if (r < 0)
469                 return bus_log_parse_error(r);
470
471         while ((r = bus_parse_unit_info(reply, &u)) > 0) {
472
473                 if (!GREEDY_REALLOC(unit_infos, size, c+1))
474                         return log_oom();
475
476                 unit_infos[c++] = u;
477         }
478         if (r < 0)
479                 return bus_log_parse_error(r);
480
481         r = sd_bus_message_exit_container(reply);
482         if (r < 0)
483                 return bus_log_parse_error(r);
484
485         *_reply = reply;
486         reply = NULL;
487
488         *_unit_infos = unit_infos;
489         unit_infos = NULL;
490
491         return c;
492 }
493
494 static int list_units(sd_bus *bus, char **args) {
495         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
496         _cleanup_free_ UnitInfo *unit_infos = NULL;
497         int r;
498
499         pager_open_if_enabled();
500
501         r = get_unit_list(bus, &reply, &unit_infos);
502         if (r < 0)
503                 return r;
504
505         qsort_safe(unit_infos, r, sizeof(UnitInfo), compare_unit_info);
506         output_units_list(unit_infos, r);
507
508         return 0;
509 }
510
511 static int get_triggered_units(
512                 sd_bus *bus,
513                 const char* path,
514                 char*** ret) {
515
516         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
517         int r;
518
519         r = sd_bus_get_property_strv(
520                         bus,
521                         "org.freedesktop.systemd1",
522                         path,
523                         "org.freedesktop.systemd1.Unit",
524                         "Triggers",
525                         &error,
526                         ret);
527
528         if (r < 0)
529                 log_error("Failed to determine triggers: %s", bus_error_message(&error, r));
530
531         return 0;
532 }
533
534 static int get_listening(
535                 sd_bus *bus,
536                 const char* unit_path,
537                 char*** listening) {
538
539         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
540         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
541         const char *type, *path;
542         int r, n = 0;
543
544         r = sd_bus_get_property(
545                         bus,
546                         "org.freedesktop.systemd1",
547                         unit_path,
548                         "org.freedesktop.systemd1.Socket",
549                         "Listen",
550                         &error,
551                         &reply,
552                         "a(ss)");
553         if (r < 0) {
554                 log_error("Failed to get list of listening sockets: %s", bus_error_message(&error, r));
555                 return r;
556         }
557
558         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ss)");
559         if (r < 0)
560                 return bus_log_parse_error(r);
561
562         while ((r = sd_bus_message_read(reply, "(ss)", &type, &path)) > 0) {
563
564                 r = strv_extend(listening, type);
565                 if (r < 0)
566                         return log_oom();
567
568                 r = strv_extend(listening, path);
569                 if (r < 0)
570                         return log_oom();
571
572                 n++;
573         }
574         if (r < 0)
575                 return bus_log_parse_error(r);
576
577         r = sd_bus_message_exit_container(reply);
578         if (r < 0)
579                 return bus_log_parse_error(r);
580
581         return n;
582 }
583
584 struct socket_info {
585         const char* id;
586
587         char* type;
588         char* path;
589
590         /* Note: triggered is a list here, although it almost certainly
591          * will always be one unit. Nevertheless, dbus API allows for multiple
592          * values, so let's follow that.*/
593         char** triggered;
594
595         /* The strv above is shared. free is set only in the first one. */
596         bool own_triggered;
597 };
598
599 static int socket_info_compare(const struct socket_info *a, const struct socket_info *b) {
600         int o;
601
602         assert(a);
603         assert(b);
604
605         o = strcmp(a->path, b->path);
606         if (o == 0)
607                 o = strcmp(a->type, b->type);
608
609         return o;
610 }
611
612 static int output_sockets_list(struct socket_info *socket_infos, unsigned cs) {
613         struct socket_info *s;
614         unsigned pathlen = sizeof("LISTEN") - 1,
615                 typelen = (sizeof("TYPE") - 1) * arg_show_types,
616                 socklen = sizeof("UNIT") - 1,
617                 servlen = sizeof("ACTIVATES") - 1;
618         const char *on, *off;
619
620         for (s = socket_infos; s < socket_infos + cs; s++) {
621                 unsigned tmp = 0;
622                 char **a;
623
624                 socklen = MAX(socklen, strlen(s->id));
625                 if (arg_show_types)
626                         typelen = MAX(typelen, strlen(s->type));
627                 pathlen = MAX(pathlen, strlen(s->path));
628
629                 STRV_FOREACH(a, s->triggered)
630                         tmp += strlen(*a) + 2*(a != s->triggered);
631                 servlen = MAX(servlen, tmp);
632         }
633
634         if (cs) {
635                 if (!arg_no_legend)
636                         printf("%-*s %-*.*s%-*s %s\n",
637                                pathlen, "LISTEN",
638                                typelen + arg_show_types, typelen + arg_show_types, "TYPE ",
639                                socklen, "UNIT",
640                                "ACTIVATES");
641
642                 for (s = socket_infos; s < socket_infos + cs; s++) {
643                         char **a;
644
645                         if (arg_show_types)
646                                 printf("%-*s %-*s %-*s",
647                                        pathlen, s->path, typelen, s->type, socklen, s->id);
648                         else
649                                 printf("%-*s %-*s",
650                                        pathlen, s->path, socklen, s->id);
651                         STRV_FOREACH(a, s->triggered)
652                                 printf("%s %s",
653                                        a == s->triggered ? "" : ",", *a);
654                         printf("\n");
655                 }
656
657                 on = ansi_highlight();
658                 off = ansi_highlight_off();
659                 if (!arg_no_legend)
660                         printf("\n");
661         } else {
662                 on = ansi_highlight_red();
663                 off = ansi_highlight_off();
664         }
665
666         if (!arg_no_legend) {
667                 printf("%s%u sockets listed.%s\n", on, cs, off);
668                 if (!arg_all)
669                         printf("Pass --all to see loaded but inactive sockets, too.\n");
670         }
671
672         return 0;
673 }
674
675 static int list_sockets(sd_bus *bus, char **args) {
676         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
677         _cleanup_free_ UnitInfo *unit_infos = NULL;
678         struct socket_info *socket_infos = NULL;
679         const UnitInfo *u;
680         struct socket_info *s;
681         unsigned cs = 0;
682         size_t size = 0;
683         int r = 0, n;
684
685         pager_open_if_enabled();
686
687         n = get_unit_list(bus, &reply, &unit_infos);
688         if (n < 0)
689                 return n;
690
691         for (u = unit_infos; u < unit_infos + n; u++) {
692                 _cleanup_strv_free_ char **listening = NULL, **triggered = NULL;
693                 int i, c;
694
695                 if (!output_show_unit(u))
696                         continue;
697
698                 if (!endswith(u->id, ".socket"))
699                         continue;
700
701                 r = get_triggered_units(bus, u->unit_path, &triggered);
702                 if (r < 0)
703                         goto cleanup;
704
705                 c = get_listening(bus, u->unit_path, &listening);
706                 if (c < 0) {
707                         r = c;
708                         goto cleanup;
709                 }
710
711                 if (!GREEDY_REALLOC(socket_infos, size, cs + c)) {
712                         r = log_oom();
713                         goto cleanup;
714                 }
715
716                 for (i = 0; i < c; i++)
717                         socket_infos[cs + i] = (struct socket_info) {
718                                 .id = u->id,
719                                 .type = listening[i*2],
720                                 .path = listening[i*2 + 1],
721                                 .triggered = triggered,
722                                 .own_triggered = i==0,
723                         };
724
725                 /* from this point on we will cleanup those socket_infos */
726                 cs += c;
727                 free(listening);
728                 listening = triggered = NULL; /* avoid cleanup */
729         }
730
731         qsort_safe(socket_infos, cs, sizeof(struct socket_info),
732                    (__compar_fn_t) socket_info_compare);
733
734         output_sockets_list(socket_infos, cs);
735
736  cleanup:
737         assert(cs == 0 || socket_infos);
738         for (s = socket_infos; s < socket_infos + cs; s++) {
739                 free(s->type);
740                 free(s->path);
741                 if (s->own_triggered)
742                         strv_free(s->triggered);
743         }
744         free(socket_infos);
745
746         return r;
747 }
748
749 static int get_next_elapse(
750                 sd_bus *bus,
751                 const char *path,
752                 dual_timestamp *next) {
753
754         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
755         dual_timestamp t;
756         int r;
757
758         assert(bus);
759         assert(path);
760         assert(next);
761
762         r = sd_bus_get_property_trivial(
763                         bus,
764                         "org.freedesktop.systemd1",
765                         path,
766                         "org.freedesktop.systemd1.Timer",
767                         "NextElapseUSecMonotonic",
768                         &error,
769                         't',
770                         &t.monotonic);
771         if (r < 0) {
772                 log_error("Failed to get next elapsation time: %s", bus_error_message(&error, r));
773                 return r;
774         }
775
776         r = sd_bus_get_property_trivial(
777                         bus,
778                         "org.freedesktop.systemd1",
779                         path,
780                         "org.freedesktop.systemd1.Timer",
781                         "NextElapseUSecRealtime",
782                         &error,
783                         't',
784                         &t.realtime);
785         if (r < 0) {
786                 log_error("Failed to get next elapsation time: %s", bus_error_message(&error, r));
787                 return r;
788         }
789
790         *next = t;
791         return 0;
792 }
793
794 struct timer_info {
795         const char* id;
796         usec_t next_elapse;
797         char** triggered;
798 };
799
800 static int timer_info_compare(const struct timer_info *a, const struct timer_info *b) {
801         assert(a);
802         assert(b);
803
804         if (a->next_elapse < b->next_elapse)
805                 return -1;
806         if (a->next_elapse > b->next_elapse)
807                 return 1;
808
809         return strcmp(a->id, b->id);
810 }
811
812 static int output_timers_list(struct timer_info *timer_infos, unsigned n) {
813         struct timer_info *t;
814         unsigned
815                 nextlen = sizeof("NEXT") - 1,
816                 leftlen = sizeof("LEFT") - 1,
817                 unitlen = sizeof("UNIT") - 1,
818                 activatelen = sizeof("ACTIVATES") - 1;
819
820         const char *on, *off;
821
822         assert(timer_infos || n == 0);
823
824         for (t = timer_infos; t < timer_infos + n; t++) {
825                 unsigned ul = 0;
826                 char **a;
827
828                 if (t->next_elapse > 0) {
829                         char tstamp[FORMAT_TIMESTAMP_MAX] = "", trel[FORMAT_TIMESTAMP_RELATIVE_MAX] = "";
830
831                         format_timestamp(tstamp, sizeof(tstamp), t->next_elapse);
832                         nextlen = MAX(nextlen, strlen(tstamp) + 1);
833
834                         format_timestamp_relative(trel, sizeof(trel), t->next_elapse);
835                         leftlen = MAX(leftlen, strlen(trel));
836                 }
837
838                 unitlen = MAX(unitlen, strlen(t->id));
839
840                 STRV_FOREACH(a, t->triggered)
841                         ul += strlen(*a) + 2*(a != t->triggered);
842                 activatelen = MAX(activatelen, ul);
843         }
844
845         if (n > 0) {
846                 if (!arg_no_legend)
847                         printf("%-*s %-*s %-*s %s\n",
848                                nextlen, "NEXT",
849                                leftlen, "LEFT",
850                                unitlen, "UNIT",
851                                         "ACTIVATES");
852
853                 for (t = timer_infos; t < timer_infos + n; t++) {
854                         char tstamp[FORMAT_TIMESTAMP_MAX] = "n/a", trel[FORMAT_TIMESTAMP_RELATIVE_MAX] = "n/a";
855                         char **a;
856
857                         format_timestamp(tstamp, sizeof(tstamp), t->next_elapse);
858                         format_timestamp_relative(trel, sizeof(trel), t->next_elapse);
859
860                         printf("%-*s %-*s %-*s",
861                                nextlen, tstamp, leftlen, trel, unitlen, t->id);
862
863                         STRV_FOREACH(a, t->triggered)
864                                 printf("%s %s",
865                                        a == t->triggered ? "" : ",", *a);
866                         printf("\n");
867                 }
868
869                 on = ansi_highlight();
870                 off = ansi_highlight_off();
871                 if (!arg_no_legend)
872                         printf("\n");
873         } else {
874                 on = ansi_highlight_red();
875                 off = ansi_highlight_off();
876         }
877
878         if (!arg_no_legend) {
879                 printf("%s%u timers listed.%s\n", on, n, off);
880                 if (!arg_all)
881                         printf("Pass --all to see loaded but inactive timers, too.\n");
882         }
883
884         return 0;
885 }
886
887 static int list_timers(sd_bus *bus, char **args) {
888
889         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
890         _cleanup_free_ struct timer_info *timer_infos = NULL;
891         _cleanup_free_ UnitInfo *unit_infos = NULL;
892         struct timer_info *t;
893         const UnitInfo *u;
894         size_t size = 0;
895         int n, c = 0;
896         dual_timestamp nw;
897         int r = 0;
898
899         pager_open_if_enabled();
900
901         n = get_unit_list(bus, &reply, &unit_infos);
902         if (n < 0)
903                 return n;
904
905         dual_timestamp_get(&nw);
906
907         for (u = unit_infos; u < unit_infos + n; u++) {
908                 _cleanup_strv_free_ char **triggered = NULL;
909                 dual_timestamp next;
910                 usec_t m;
911
912                 if (!output_show_unit(u))
913                         continue;
914
915                 if (!endswith(u->id, ".timer"))
916                         continue;
917
918                 r = get_triggered_units(bus, u->unit_path, &triggered);
919                 if (r < 0)
920                         goto cleanup;
921
922                 r = get_next_elapse(bus, u->unit_path, &next);
923                 if (r < 0)
924                         goto cleanup;
925
926                 if (next.monotonic != (usec_t) -1 && next.monotonic > 0) {
927                         usec_t converted;
928
929                         if (next.monotonic > nw.monotonic)
930                                 converted = nw.realtime + (next.monotonic - nw.monotonic);
931                         else
932                                 converted = nw.realtime - (nw.monotonic - next.monotonic);
933
934                         if (next.realtime != (usec_t) -1 && next.realtime > 0)
935                                 m = MIN(converted, next.realtime);
936                         else
937                                 m = converted;
938                 } else
939                         m = next.realtime;
940
941                 if (!GREEDY_REALLOC(timer_infos, size, c+1)) {
942                         r = log_oom();
943                         goto cleanup;
944                 }
945
946                 timer_infos[c++] = (struct timer_info) {
947                         .id = u->id,
948                         .next_elapse = m,
949                         .triggered = triggered,
950                 };
951
952                 triggered = NULL; /* avoid cleanup */
953         }
954
955         qsort_safe(timer_infos, c, sizeof(struct timer_info),
956                    (__compar_fn_t) timer_info_compare);
957
958         output_timers_list(timer_infos, c);
959
960  cleanup:
961         for (t = timer_infos; t < timer_infos + c; t++)
962                 strv_free(t->triggered);
963
964         return r;
965 }
966
967 static int compare_unit_file_list(const void *a, const void *b) {
968         const char *d1, *d2;
969         const UnitFileList *u = a, *v = b;
970
971         d1 = strrchr(u->path, '.');
972         d2 = strrchr(v->path, '.');
973
974         if (d1 && d2) {
975                 int r;
976
977                 r = strcasecmp(d1, d2);
978                 if (r != 0)
979                         return r;
980         }
981
982         return strcasecmp(path_get_file_name(u->path), path_get_file_name(v->path));
983 }
984
985 static bool output_show_unit_file(const UnitFileList *u) {
986         const char *dot;
987
988         return !arg_types || ((dot = strrchr(u->path, '.')) && strv_find(arg_types, dot+1));
989 }
990
991 static void output_unit_file_list(const UnitFileList *units, unsigned c) {
992         unsigned max_id_len, id_cols, state_cols, n_shown = 0;
993         const UnitFileList *u;
994
995         max_id_len = sizeof("UNIT FILE")-1;
996         state_cols = sizeof("STATE")-1;
997
998         for (u = units; u < units + c; u++) {
999                 if (!output_show_unit_file(u))
1000                         continue;
1001
1002                 max_id_len = MAX(max_id_len, strlen(path_get_file_name(u->path)));
1003                 state_cols = MAX(state_cols, strlen(unit_file_state_to_string(u->state)));
1004         }
1005
1006         if (!arg_full) {
1007                 unsigned basic_cols;
1008
1009                 id_cols = MIN(max_id_len, 25u);
1010                 basic_cols = 1 + id_cols + state_cols;
1011                 if (basic_cols < (unsigned) columns())
1012                         id_cols += MIN(columns() - basic_cols, max_id_len - id_cols);
1013         } else
1014                 id_cols = max_id_len;
1015
1016         if (!arg_no_legend)
1017                 printf("%-*s %-*s\n",
1018                        id_cols, "UNIT FILE",
1019                        state_cols, "STATE");
1020
1021         for (u = units; u < units + c; u++) {
1022                 _cleanup_free_ char *e = NULL;
1023                 const char *on, *off;
1024                 const char *id;
1025
1026                 if (!output_show_unit_file(u))
1027                         continue;
1028
1029                 n_shown++;
1030
1031                 if (u->state == UNIT_FILE_MASKED ||
1032                     u->state == UNIT_FILE_MASKED_RUNTIME ||
1033                     u->state == UNIT_FILE_DISABLED ||
1034                     u->state == UNIT_FILE_INVALID) {
1035                         on  = ansi_highlight_red();
1036                         off = ansi_highlight_off();
1037                 } else if (u->state == UNIT_FILE_ENABLED) {
1038                         on  = ansi_highlight_green();
1039                         off = ansi_highlight_off();
1040                 } else
1041                         on = off = "";
1042
1043                 id = path_get_file_name(u->path);
1044
1045                 e = arg_full ? NULL : ellipsize(id, id_cols, 33);
1046
1047                 printf("%-*s %s%-*s%s\n",
1048                        id_cols, e ? e : id,
1049                        on, state_cols, unit_file_state_to_string(u->state), off);
1050         }
1051
1052         if (!arg_no_legend)
1053                 printf("\n%u unit files listed.\n", n_shown);
1054 }
1055
1056 static int list_unit_files(sd_bus *bus, char **args) {
1057         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1058         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1059         _cleanup_free_ UnitFileList *units = NULL;
1060         unsigned c = 0;
1061         const char *state;
1062         char *path;
1063         int r;
1064
1065         pager_open_if_enabled();
1066
1067         if (avoid_bus()) {
1068                 Hashmap *h;
1069                 UnitFileList *u;
1070                 Iterator i;
1071                 unsigned n_units;
1072
1073                 h = hashmap_new(string_hash_func, string_compare_func);
1074                 if (!h)
1075                         return log_oom();
1076
1077                 r = unit_file_get_list(arg_scope, arg_root, h);
1078                 if (r < 0) {
1079                         unit_file_list_free(h);
1080                         log_error("Failed to get unit file list: %s", strerror(-r));
1081                         return r;
1082                 }
1083
1084                 n_units = hashmap_size(h);
1085                 units = new(UnitFileList, n_units);
1086                 if (!units) {
1087                         unit_file_list_free(h);
1088                         return log_oom();
1089                 }
1090
1091                 HASHMAP_FOREACH(u, h, i) {
1092                         memcpy(units + c++, u, sizeof(UnitFileList));
1093                         free(u);
1094                 }
1095
1096                 assert(c == n_units);
1097                 hashmap_free(h);
1098         } else {
1099                 size_t size = 0;
1100
1101                 r = sd_bus_call_method(
1102                                 bus,
1103                                 "org.freedesktop.systemd1",
1104                                 "/org/freedesktop/systemd1",
1105                                 "org.freedesktop.systemd1.Manager",
1106                                 "ListUnitFiles",
1107                                 &error,
1108                                 &reply,
1109                                 NULL);
1110                 if (r < 0) {
1111                         log_error("Failed to list unit files: %s", bus_error_message(&error, r));
1112                         return r;
1113                 }
1114
1115                 r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ss)");
1116                 if (r < 0)
1117                         return bus_log_parse_error(r);
1118
1119                 while ((r = sd_bus_message_read(reply, "(ss)", &path, &state)) > 0) {
1120
1121                         if (!GREEDY_REALLOC(units, size, c + 1))
1122                                 return log_oom();
1123
1124                         units[c++] = (struct UnitFileList) {
1125                                 path,
1126                                 unit_file_state_from_string(state)
1127                         };
1128                 }
1129                 if (r < 0)
1130                         return bus_log_parse_error(r);
1131
1132                 r = sd_bus_message_exit_container(reply);
1133                 if (r < 0)
1134                         return bus_log_parse_error(r);
1135         }
1136
1137         if (c > 0) {
1138                 qsort(units, c, sizeof(UnitFileList), compare_unit_file_list);
1139                 output_unit_file_list(units, c);
1140         }
1141
1142         return 0;
1143 }
1144
1145 static int list_dependencies_print(const char *name, int level, unsigned int branches, bool last) {
1146         _cleanup_free_ char *n = NULL;
1147         size_t max_len = MAX(columns(),20u);
1148         size_t len = 0;
1149         int i;
1150
1151         if (!arg_plain) {
1152
1153                 for (i = level - 1; i >= 0; i--) {
1154                         len += 2;
1155                         if(len > max_len - 3 && !arg_full) {
1156                                 printf("%s...\n",max_len % 2 ? "" : " ");
1157                                 return 0;
1158                         }
1159                         printf("%s", draw_special_char(branches & (1 << i) ? DRAW_TREE_VERT : DRAW_TREE_SPACE));
1160                 }
1161                 len += 2;
1162
1163                 if(len > max_len - 3 && !arg_full) {
1164                         printf("%s...\n",max_len % 2 ? "" : " ");
1165                         return 0;
1166                 }
1167
1168                 printf("%s", draw_special_char(last ? DRAW_TREE_RIGHT : DRAW_TREE_BRANCH));
1169         }
1170
1171         if (arg_full){
1172                 printf("%s\n", name);
1173                 return 0;
1174         }
1175
1176         n = ellipsize(name, max_len-len, 100);
1177         if(!n)
1178                 return log_oom();
1179
1180         printf("%s\n", n);
1181         return 0;
1182 }
1183
1184 static int list_dependencies_get_dependencies(sd_bus *bus, const char *name, char ***deps) {
1185
1186         static const char *dependencies[] = {
1187                 [DEPENDENCY_FORWARD] = "Requires\0"
1188                                        "RequiresOverridable\0"
1189                                        "Requisite\0"
1190                                        "RequisiteOverridable\0"
1191                                        "Wants\0",
1192                 [DEPENDENCY_REVERSE] = "RequiredBy\0"
1193                                        "RequiredByOverridable\0"
1194                                        "WantedBy\0"
1195                                        "PartOf\0",
1196                 [DEPENDENCY_AFTER]   = "After\0",
1197                 [DEPENDENCY_BEFORE]  = "Before\0",
1198         };
1199
1200         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1201         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1202         _cleanup_strv_free_ char **ret = NULL;
1203         _cleanup_free_ char *path = NULL;
1204         int r;
1205
1206         assert(bus);
1207         assert(name);
1208         assert(deps);
1209         assert(arg_dependency < ELEMENTSOF(dependencies));
1210
1211         path = unit_dbus_path_from_name(name);
1212         if (!path)
1213                 return log_oom();
1214
1215         r = sd_bus_call_method(
1216                         bus,
1217                         "org.freedesktop.systemd1",
1218                         path,
1219                         "org.freedesktop.DBus.Properties",
1220                         "GetAll",
1221                         &error,
1222                         &reply,
1223                         "s", "org.freedesktop.systemd1.Unit");
1224         if (r < 0) {
1225                 log_error("Failed to get properties of %s: %s", name, bus_error_message(&error, r));
1226                 return r;
1227         }
1228
1229         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "{sv}");
1230         if (r < 0)
1231                 return bus_log_parse_error(r);
1232
1233         while ((r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) {
1234                 const char *prop;
1235
1236                 r = sd_bus_message_read(reply, "s", &prop);
1237                 if (r < 0)
1238                         return bus_log_parse_error(r);
1239
1240                 if (!nulstr_contains(dependencies[arg_dependency], prop)) {
1241                         r = sd_bus_message_skip(reply, "v");
1242                         if (r < 0)
1243                                 return bus_log_parse_error(r);
1244                 } else {
1245
1246                         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_VARIANT, "as");
1247                         if (r < 0)
1248                                 return bus_log_parse_error(r);
1249
1250                         r = bus_message_read_strv_extend(reply, &ret);
1251                         if (r < 0)
1252                                 return bus_log_parse_error(r);
1253
1254                         r = sd_bus_message_exit_container(reply);
1255                         if (r < 0)
1256                                 return bus_log_parse_error(r);
1257                 }
1258
1259                 r = sd_bus_message_exit_container(reply);
1260                 if (r < 0)
1261                         return bus_log_parse_error(r);
1262
1263         }
1264         if (r < 0)
1265                 return bus_log_parse_error(r);
1266
1267         r = sd_bus_message_exit_container(reply);
1268         if (r < 0)
1269                 return bus_log_parse_error(r);
1270
1271         *deps = ret;
1272         ret = NULL;
1273
1274         return 0;
1275 }
1276
1277 static int list_dependencies_compare(const void *_a, const void *_b) {
1278         const char **a = (const char**) _a, **b = (const char**) _b;
1279
1280         if (unit_name_to_type(*a) == UNIT_TARGET && unit_name_to_type(*b) != UNIT_TARGET)
1281                 return 1;
1282         if (unit_name_to_type(*a) != UNIT_TARGET && unit_name_to_type(*b) == UNIT_TARGET)
1283                 return -1;
1284
1285         return strcasecmp(*a, *b);
1286 }
1287
1288 static int list_dependencies_one(
1289                 sd_bus *bus,
1290                 const char *name,
1291                 int level,
1292                 char ***units,
1293                 unsigned int branches) {
1294
1295         _cleanup_strv_free_ char **deps = NULL, **u;
1296         char **c;
1297         int r = 0;
1298
1299         assert(bus);
1300         assert(name);
1301         assert(units);
1302
1303         u = strv_append(*units, name);
1304         if (!u)
1305                 return log_oom();
1306
1307         r = list_dependencies_get_dependencies(bus, name, &deps);
1308         if (r < 0)
1309                 return r;
1310
1311         qsort_safe(deps, strv_length(deps), sizeof (char*), list_dependencies_compare);
1312
1313         STRV_FOREACH(c, deps) {
1314                 int state;
1315
1316                 if (strv_contains(u, *c)) {
1317                         if (!arg_plain) {
1318                                 r = list_dependencies_print("...", level + 1, (branches << 1) | (c[1] == NULL ? 0 : 1), 1);
1319                                 if (r < 0)
1320                                         return r;
1321                         }
1322                         continue;
1323                 }
1324
1325                 state = check_one_unit(bus, *c, "activating\0active\0reloading\0", true);
1326                 if (state > 0)
1327                         printf("%s%s%s", ansi_highlight_green(), draw_special_char(DRAW_BLACK_CIRCLE), ansi_highlight_off());
1328                 else
1329                         printf("%s%s%s", ansi_highlight_red(), draw_special_char(DRAW_BLACK_CIRCLE), ansi_highlight_off());
1330
1331                 r = list_dependencies_print(*c, level, branches, c[1] == NULL);
1332                 if (r < 0)
1333                         return r;
1334
1335                 if (arg_all || unit_name_to_type(*c) == UNIT_TARGET) {
1336                        r = list_dependencies_one(bus, *c, level + 1, &u, (branches << 1) | (c[1] == NULL ? 0 : 1));
1337                        if(r < 0)
1338                                return r;
1339                 }
1340         }
1341
1342         if (arg_plain) {
1343                 strv_free(*units);
1344                 *units = u;
1345                 u = NULL;
1346         }
1347
1348         return 0;
1349 }
1350
1351 static int list_dependencies(sd_bus *bus, char **args) {
1352         _cleanup_strv_free_ char **units = NULL;
1353         _cleanup_free_ char *unit = NULL;
1354         const char *u;
1355
1356         assert(bus);
1357
1358         if (args[1]) {
1359                 unit = unit_name_mangle(args[1]);
1360                 if (!unit)
1361                         return log_oom();
1362                 u = unit;
1363         } else
1364                 u = SPECIAL_DEFAULT_TARGET;
1365
1366         pager_open_if_enabled();
1367
1368         puts(u);
1369
1370         return list_dependencies_one(bus, u, 0, &units, 0);
1371 }
1372
1373 static int get_default(sd_bus *bus, char **args) {
1374         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1375         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1376         _cleanup_free_ char *_path = NULL;
1377         const char *path;
1378         int r;
1379
1380         if (!bus || avoid_bus()) {
1381                 r = unit_file_get_default(arg_scope, arg_root, &_path);
1382                 if (r < 0) {
1383                         log_error("Failed to get default target: %s", strerror(-r));
1384                         return r;
1385                 }
1386                 path = _path;
1387
1388         } else {
1389                 r = sd_bus_call_method(
1390                                 bus,
1391                                 "org.freedesktop.systemd1",
1392                                 "/org/freedesktop/systemd1",
1393                                 "org.freedesktop.systemd1.Manager",
1394                                 "GetDefaultTarget",
1395                                 &error,
1396                                 &reply,
1397                                 NULL);
1398                 if (r < 0) {
1399                         log_error("Failed to get default target: %s", bus_error_message(&error, -r));
1400                         return r;
1401                 }
1402
1403                 r = sd_bus_message_read(reply, "s", &path);
1404                 if (r < 0)
1405                         return bus_log_parse_error(r);
1406         }
1407
1408         if (path)
1409                 printf("%s\n", path);
1410
1411         return 0;
1412 }
1413
1414 static void dump_unit_file_changes(const UnitFileChange *changes, unsigned n_changes) {
1415         unsigned i;
1416
1417         assert(changes || n_changes == 0);
1418
1419         for (i = 0; i < n_changes; i++) {
1420                 if (changes[i].type == UNIT_FILE_SYMLINK)
1421                         log_info("ln -s '%s' '%s'", changes[i].source, changes[i].path);
1422                 else
1423                         log_info("rm '%s'", changes[i].path);
1424         }
1425 }
1426
1427 static int deserialize_and_dump_unit_file_changes(sd_bus_message *m) {
1428         const char *type, *path, *source;
1429         int r;
1430
1431         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sss)");
1432         if (r < 0)
1433                 return bus_log_parse_error(r);
1434
1435         while ((r = sd_bus_message_read(m, "(sss)", &type, &path, &source)) > 0) {
1436                 if (!arg_quiet) {
1437                         if (streq(type, "symlink"))
1438                                 log_info("ln -s '%s' '%s'", source, path);
1439                         else
1440                                 log_info("rm '%s'", path);
1441                 }
1442         }
1443         if (r < 0)
1444                 return bus_log_parse_error(r);
1445
1446         r = sd_bus_message_exit_container(m);
1447         if (r < 0)
1448                 return bus_log_parse_error(r);
1449
1450         return 0;
1451 }
1452
1453 static int set_default(sd_bus *bus, char **args) {
1454         _cleanup_free_ char *unit = NULL;
1455         UnitFileChange *changes = NULL;
1456         unsigned n_changes = 0;
1457         int r;
1458
1459         unit = unit_name_mangle_with_suffix(args[1], ".target");
1460         if (!unit)
1461                 return log_oom();
1462
1463         if (!bus || avoid_bus()) {
1464                 r = unit_file_set_default(arg_scope, arg_root, unit, arg_force, &changes, &n_changes);
1465                 if (r < 0) {
1466                         log_error("Failed to set default target: %s", strerror(-r));
1467                         return r;
1468                 }
1469
1470                 if (!arg_quiet)
1471                         dump_unit_file_changes(changes, n_changes);
1472
1473                 r = 0;
1474         } else {
1475                 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1476                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1477
1478                 r = sd_bus_call_method(
1479                                 bus,
1480                                 "org.freedesktop.systemd1",
1481                                 "/org/freedesktop/systemd1",
1482                                 "org.freedesktop.systemd1.Manager",
1483                                 "SetDefaultTarget",
1484                                 &error,
1485                                 &reply,
1486                                 "sb", unit, arg_force);
1487                 if (r < 0) {
1488                         log_error("Failed to set default target: %s", bus_error_message(&error, -r));
1489                         return r;
1490                 }
1491
1492                 r = deserialize_and_dump_unit_file_changes(reply);
1493                 if (r < 0)
1494                         return r;
1495
1496                 /* Try to reload if enabeld */
1497                 if (!arg_no_reload)
1498                         r = daemon_reload(bus, args);
1499                 else
1500                         r = 0;
1501         }
1502
1503         unit_file_changes_free(changes, n_changes);
1504
1505         return r;
1506 }
1507
1508 struct job_info {
1509         uint32_t id;
1510         const char *name, *type, *state;
1511 };
1512
1513 static void output_jobs_list(const struct job_info* jobs, unsigned n) {
1514         unsigned id_len, unit_len, type_len, state_len;
1515         const struct job_info *j;
1516         const char *on, *off;
1517         bool shorten = false;
1518
1519         assert(n == 0 || jobs);
1520
1521         if (n == 0) {
1522                 on = ansi_highlight_green();
1523                 off = ansi_highlight_off();
1524
1525                 printf("%sNo jobs running.%s\n", on, off);
1526                 return;
1527         }
1528
1529         pager_open_if_enabled();
1530
1531         id_len = sizeof("JOB")-1;
1532         unit_len = sizeof("UNIT")-1;
1533         type_len = sizeof("TYPE")-1;
1534         state_len = sizeof("STATE")-1;
1535
1536         for (j = jobs; j < jobs + n; j++) {
1537                 uint32_t id = j->id;
1538                 assert(j->name && j->type && j->state);
1539
1540                 id_len = MAX(id_len, DECIMAL_STR_WIDTH(id));
1541                 unit_len = MAX(unit_len, strlen(j->name));
1542                 type_len = MAX(type_len, strlen(j->type));
1543                 state_len = MAX(state_len, strlen(j->state));
1544         }
1545
1546         if (!arg_full && id_len + 1 + unit_len + type_len + 1 + state_len > columns()) {
1547                 unit_len = MAX(33u, columns() - id_len - type_len - state_len - 3);
1548                 shorten = true;
1549         }
1550
1551         if (!arg_no_legend)
1552                 printf("%*s %-*s %-*s %-*s\n",
1553                        id_len, "JOB",
1554                        unit_len, "UNIT",
1555                        type_len, "TYPE",
1556                        state_len, "STATE");
1557
1558         for (j = jobs; j < jobs + n; j++) {
1559                 _cleanup_free_ char *e = NULL;
1560
1561                 if (streq(j->state, "running")) {
1562                         on = ansi_highlight();
1563                         off = ansi_highlight_off();
1564                 } else
1565                         on = off = "";
1566
1567                 e = shorten ? ellipsize(j->name, unit_len, 33) : NULL;
1568                 printf("%*u %s%-*s%s %-*s %s%-*s%s\n",
1569                        id_len, j->id,
1570                        on, unit_len, e ? e : j->name, off,
1571                        type_len, j->type,
1572                        on, state_len, j->state, off);
1573         }
1574
1575         if (!arg_no_legend) {
1576                 on = ansi_highlight();
1577                 off = ansi_highlight_off();
1578
1579                 printf("\n%s%u jobs listed%s.\n", on, n, off);
1580         }
1581 }
1582
1583 static int list_jobs(sd_bus *bus, char **args) {
1584         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1585         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1586         const char *name, *type, *state, *job_path, *unit_path;
1587         _cleanup_free_ struct job_info *jobs = NULL;
1588         size_t size = 0;
1589         unsigned c = 0;
1590         uint32_t id;
1591         int r;
1592
1593         r = sd_bus_call_method(
1594                         bus,
1595                         "org.freedesktop.systemd1",
1596                         "/org/freedesktop/systemd1",
1597                         "org.freedesktop.systemd1.Manager",
1598                         "ListJobs",
1599                         &error,
1600                         &reply,
1601                         NULL);
1602         if (r < 0) {
1603                 log_error("Failed to list jobs: %s", bus_error_message(&error, r));
1604                 return r;
1605         }
1606
1607         r = sd_bus_message_enter_container(reply, 'a', "(usssoo)");
1608         if (r < 0)
1609                 return bus_log_parse_error(r);
1610
1611         while ((r = sd_bus_message_read(reply, "(usssoo)", &id, &name, &type, &state, &job_path, &unit_path)) > 0) {
1612
1613                 if (!GREEDY_REALLOC(jobs, size, c + 1))
1614                         return log_oom();
1615
1616                 jobs[c++] = (struct job_info) {
1617                         id,
1618                         name,
1619                         type,
1620                         state
1621                 };
1622         }
1623         if (r < 0)
1624                 return bus_log_parse_error(r);
1625
1626         r = sd_bus_message_exit_container(reply);
1627         if (r < 0)
1628                 return bus_log_parse_error(r);
1629
1630         output_jobs_list(jobs, c);
1631         return r;
1632 }
1633
1634 static int cancel_job(sd_bus *bus, char **args) {
1635         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1636         char **name;
1637
1638         assert(args);
1639
1640         if (strv_length(args) <= 1)
1641                 return daemon_reload(bus, args);
1642
1643         STRV_FOREACH(name, args+1) {
1644                 uint32_t id;
1645                 int r;
1646
1647                 r = safe_atou32(*name, &id);
1648                 if (r < 0) {
1649                         log_error("Failed to parse job id \"%s\": %s", *name, strerror(-r));
1650                         return r;
1651                 }
1652
1653                 r = sd_bus_call_method(
1654                                 bus,
1655                                 "org.freedesktop.systemd1",
1656                                 "/org/freedesktop/systemd1",
1657                                 "org.freedesktop.systemd1.Manager",
1658                                 "CancelJob",
1659                                 &error,
1660                                 NULL,
1661                                 "u", id);
1662                 if (r < 0) {
1663                         log_error("Failed to cancel job %u: %s", (unsigned) id, bus_error_message(&error, r));
1664                         return r;
1665                 }
1666         }
1667
1668         return 0;
1669 }
1670
1671 static int need_daemon_reload(sd_bus *bus, const char *unit) {
1672         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1673         _cleanup_free_ char *n = NULL;
1674         const char *path;
1675         int b, r;
1676
1677         /* We ignore all errors here, since this is used to show a
1678          * warning only */
1679
1680         n = unit_name_mangle(unit);
1681         if (!n)
1682                 return -ENOMEM;
1683
1684         /* We don't use unit_dbus_path_from_name() directly since we
1685          * don't want to load the unit if it isn't loaded. */
1686
1687         r = sd_bus_call_method(
1688                         bus,
1689                         "org.freedesktop.systemd1",
1690                         "/org/freedesktop/systemd1",
1691                         "org.freedesktop.systemd1.Manager",
1692                         "GetUnit",
1693                         NULL,
1694                         &reply,
1695                         "s", n);
1696         if (r < 0)
1697                 return r;
1698
1699         r = sd_bus_message_read(reply, "o", &path);
1700         if (r < 0)
1701                 return r;
1702
1703         r = sd_bus_get_property_trivial(
1704                         bus,
1705                         "org.freedesktop.systemd1",
1706                         path,
1707                         "org.freedesktop.systemd1.Unit",
1708                         "NeedDaemonReload",
1709                         NULL,
1710                         'b', &b);
1711         if (r < 0)
1712                 return r;
1713
1714         return b;
1715 }
1716
1717 typedef struct WaitData {
1718         Set *set;
1719
1720         char *name;
1721         char *result;
1722 } WaitData;
1723
1724 static int wait_filter(sd_bus *bus, sd_bus_message *m, void *data, sd_bus_error *error) {
1725         WaitData *d = data;
1726
1727         assert(bus);
1728         assert(m);
1729         assert(d);
1730
1731         log_debug("Got D-Bus request: %s.%s() on %s",
1732                   sd_bus_message_get_interface(m),
1733                   sd_bus_message_get_member(m),
1734                   sd_bus_message_get_path(m));
1735
1736         if (sd_bus_message_is_signal(m, "org.freedesktop.DBus.Local", "Disconnected")) {
1737                 log_error("Warning! D-Bus connection terminated.");
1738                 sd_bus_close(bus);
1739         } else if (sd_bus_message_is_signal(m, "org.freedesktop.systemd1.Manager", "JobRemoved")) {
1740                 uint32_t id;
1741                 const char *path, *result, *unit;
1742                 char *ret;
1743                 int r;
1744
1745                 r = sd_bus_message_read(m, "uoss", &id, &path, &unit, &result);
1746                 if (r >= 0) {
1747                         ret = set_remove(d->set, (char*) path);
1748                         if (!ret)
1749                                 return 0;
1750
1751                         free(ret);
1752
1753                         if (!isempty(result))
1754                                 d->result = strdup(result);
1755
1756                         if (!isempty(unit))
1757                                 d->name = strdup(unit);
1758
1759                         return 0;
1760                 }
1761 #ifndef NOLEGACY
1762                 r = sd_bus_message_read(m, "uos", &id, &path, &result);
1763                 if (r >= 0) {
1764                         ret = set_remove(d->set, (char*) path);
1765                         if (!ret)
1766                                 return 0;
1767
1768                         free(ret);
1769
1770                         if (*result)
1771                                 d->result = strdup(result);
1772
1773                         return 0;
1774                 }
1775 #endif
1776
1777                 bus_log_parse_error(r);
1778         }
1779
1780         return 0;
1781 }
1782
1783 static int enable_wait_for_jobs(sd_bus *bus) {
1784         int r;
1785
1786         assert(bus);
1787
1788         r = sd_bus_add_match(
1789                         bus,
1790                         "type='signal',"
1791                         "sender='org.freedesktop.systemd1',"
1792                         "interface='org.freedesktop.systemd1.Manager',"
1793                         "member='JobRemoved',"
1794                         "path='/org/freedesktop/systemd1'",
1795                         NULL, NULL);
1796         if (r < 0) {
1797                 log_error("Failed to add match");
1798                 return -EIO;
1799         }
1800
1801         /* This is slightly dirty, since we don't undo the match registrations. */
1802         return 0;
1803 }
1804
1805 static int wait_for_jobs(sd_bus *bus, Set *s) {
1806         WaitData d = { .set = s };
1807         int r;
1808
1809         assert(bus);
1810         assert(s);
1811
1812         r = sd_bus_add_filter(bus, wait_filter, &d);
1813         if (r < 0)
1814                 return log_oom();
1815
1816         while (!set_isempty(s)) {
1817                 for(;;) {
1818                         r = sd_bus_process(bus, NULL);
1819                         if (r < 0)
1820                                 return r;
1821                         if (r > 0)
1822                                 break;
1823                         r = sd_bus_wait(bus, (uint64_t) -1);
1824                         if (r < 0)
1825                                 return r;
1826                 }
1827
1828                 if (!d.result)
1829                         goto free_name;
1830
1831                 if (!arg_quiet) {
1832                         if (streq(d.result, "timeout"))
1833                                 log_error("Job for %s timed out.", strna(d.name));
1834                         else if (streq(d.result, "canceled"))
1835                                 log_error("Job for %s canceled.", strna(d.name));
1836                         else if (streq(d.result, "dependency"))
1837                                 log_error("A dependency job for %s failed. See 'journalctl -xn' for details.", strna(d.name));
1838                         else if (!streq(d.result, "done") && !streq(d.result, "skipped"))
1839                                 log_error("Job for %s failed. See 'systemctl status %s' and 'journalctl -xn' for details.", strna(d.name), strna(d.name));
1840                 }
1841
1842                 if (streq_ptr(d.result, "timeout"))
1843                         r = -ETIME;
1844                 else if (streq_ptr(d.result, "canceled"))
1845                         r = -ECANCELED;
1846                 else if (!streq_ptr(d.result, "done") && !streq_ptr(d.result, "skipped"))
1847                         r = -EIO;
1848
1849                 free(d.result);
1850                 d.result = NULL;
1851
1852         free_name:
1853                 free(d.name);
1854                 d.name = NULL;
1855         }
1856
1857         return sd_bus_remove_filter(bus, wait_filter, &d);
1858 }
1859
1860 static int check_one_unit(sd_bus *bus, const char *name, const char *good_states, bool quiet) {
1861         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1862         _cleanup_free_ char *n = NULL, *state = NULL;
1863         const char *path;
1864         int r;
1865
1866         assert(name);
1867
1868         n = unit_name_mangle(name);
1869         if (!n)
1870                 return log_oom();
1871
1872         /* We don't use unit_dbus_path_from_name() directly since we
1873          * don't want to load the unit if it isn't loaded. */
1874
1875         r = sd_bus_call_method(
1876                         bus,
1877                         "org.freedesktop.systemd1",
1878                         "/org/freedesktop/systemd1",
1879                         "org.freedesktop.systemd1.Manager",
1880                         "GetUnit",
1881                         NULL,
1882                         &reply,
1883                         "s", n);
1884         if (r < 0) {
1885                 if (!quiet)
1886                         puts("unknown");
1887                 return 0;
1888         }
1889
1890         r = sd_bus_message_read(reply, "o", &path);
1891         if (r < 0)
1892                 return bus_log_parse_error(r);
1893
1894         r = sd_bus_get_property_string(
1895                         bus,
1896                         "org.freedesktop.systemd1",
1897                         path,
1898                         "org.freedesktop.systemd1.Unit",
1899                         "ActiveState",
1900                         NULL,
1901                         &state);
1902         if (r < 0) {
1903                 if (!quiet)
1904                         puts("unknown");
1905                 return 0;
1906         }
1907
1908         if (!quiet)
1909                 puts(state);
1910
1911         return nulstr_contains(good_states, state);
1912 }
1913
1914 static int check_triggering_units(
1915                 sd_bus *bus,
1916                 const char *name) {
1917
1918         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1919         _cleanup_free_ char *path = NULL, *n = NULL, *state = NULL;
1920         _cleanup_strv_free_ char **triggered_by = NULL;
1921         bool print_warning_label = true;
1922         char **i;
1923         int r;
1924
1925         n = unit_name_mangle(name);
1926         if (!n)
1927                 return log_oom();
1928
1929         path = unit_dbus_path_from_name(n);
1930         if (!path)
1931                 return log_oom();
1932
1933         r = sd_bus_get_property_string(
1934                         bus,
1935                         "org.freedesktop.systemd1",
1936                         path,
1937                         "org.freedesktop.systemd1.Unit",
1938                         "LoadState",
1939                         &error,
1940                         &state);
1941         if (r < 0) {
1942                 log_error("Failed to get load state of %s: %s", n, bus_error_message(&error, r));
1943                 return r;
1944         }
1945
1946         if (streq(state, "masked"))
1947                 return 0;
1948
1949         r = sd_bus_get_property_strv(
1950                         bus,
1951                         "org.freedesktop.systemd1",
1952                         path,
1953                         "org.freedesktop.systemd1.Unit",
1954                         "TriggeredBy",
1955                         &error,
1956                         &triggered_by);
1957         if (r < 0) {
1958                 log_error("Failed to get triggered by array of %s: %s", n, bus_error_message(&error, r));
1959                 return r;
1960         }
1961
1962         STRV_FOREACH(i, triggered_by) {
1963                 r = check_one_unit(bus, *i, "active\0reloading\0", true);
1964                 if (r < 0) {
1965                         log_error("Failed to check unit: %s", strerror(-r));
1966                         return r;
1967                 }
1968
1969                 if (r == 0)
1970                         continue;
1971
1972                 if (print_warning_label) {
1973                         log_warning("Warning: Stopping %s, but it can still be activated by:", n);
1974                         print_warning_label = false;
1975                 }
1976
1977                 log_warning("  %s", *i);
1978         }
1979
1980         return 0;
1981 }
1982
1983 static int start_unit_one(
1984                 sd_bus *bus,
1985                 const char *method,
1986                 const char *name,
1987                 const char *mode,
1988                 sd_bus_error *error,
1989                 Set *s) {
1990
1991         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1992         _cleanup_free_ char *n;
1993         const char *path;
1994         int r;
1995
1996         assert(method);
1997         assert(name);
1998         assert(mode);
1999         assert(error);
2000
2001         n = unit_name_mangle(name);
2002         if (!n)
2003                 return log_oom();
2004
2005         r = sd_bus_call_method(
2006                         bus,
2007                         "org.freedesktop.systemd1",
2008                         "/org/freedesktop/systemd1",
2009                         "org.freedesktop.systemd1.Manager",
2010                         method,
2011                         error,
2012                         &reply,
2013                         "ss", n, mode);
2014         if (r < 0) {
2015                 if (r == -ENOENT && arg_action != ACTION_SYSTEMCTL)
2016                         /* There's always a fallback possible for
2017                          * legacy actions. */
2018                         return -EADDRNOTAVAIL;
2019
2020                 log_error("Failed to start %s: %s", name, bus_error_message(error, r));
2021                 return r;
2022         }
2023
2024         r = sd_bus_message_read(reply, "o", &path);
2025         if (r < 0)
2026                 return bus_log_parse_error(r);
2027
2028         if (need_daemon_reload(bus, n) > 0)
2029                 log_warning("Warning: Unit file of %s changed on disk, 'systemctl%s daemon-reload' recommended.",
2030                             n, arg_scope == UNIT_FILE_SYSTEM ? "" : " --user");
2031
2032         if (s) {
2033                 char *p;
2034
2035                 p = strdup(path);
2036                 if (!p)
2037                         return log_oom();
2038
2039                 r = set_consume(s, p);
2040                 if (r < 0)
2041                         return log_oom();
2042         }
2043
2044         return 0;
2045 }
2046
2047 static const struct {
2048         const char *target;
2049         const char *verb;
2050         const char *mode;
2051 } action_table[_ACTION_MAX] = {
2052         [ACTION_HALT]         = { SPECIAL_HALT_TARGET,         "halt",         "replace-irreversibly" },
2053         [ACTION_POWEROFF]     = { SPECIAL_POWEROFF_TARGET,     "poweroff",     "replace-irreversibly" },
2054         [ACTION_REBOOT]       = { SPECIAL_REBOOT_TARGET,       "reboot",       "replace-irreversibly" },
2055         [ACTION_KEXEC]        = { SPECIAL_KEXEC_TARGET,        "kexec",        "replace-irreversibly" },
2056         [ACTION_RUNLEVEL2]    = { SPECIAL_RUNLEVEL2_TARGET,    NULL,           "isolate" },
2057         [ACTION_RUNLEVEL3]    = { SPECIAL_RUNLEVEL3_TARGET,    NULL,           "isolate" },
2058         [ACTION_RUNLEVEL4]    = { SPECIAL_RUNLEVEL4_TARGET,    NULL,           "isolate" },
2059         [ACTION_RUNLEVEL5]    = { SPECIAL_RUNLEVEL5_TARGET,    NULL,           "isolate" },
2060         [ACTION_RESCUE]       = { SPECIAL_RESCUE_TARGET,       "rescue",       "isolate" },
2061         [ACTION_EMERGENCY]    = { SPECIAL_EMERGENCY_TARGET,    "emergency",    "isolate" },
2062         [ACTION_DEFAULT]      = { SPECIAL_DEFAULT_TARGET,      "default",      "isolate" },
2063         [ACTION_EXIT]         = { SPECIAL_EXIT_TARGET,         "exit",         "replace-irreversibly" },
2064         [ACTION_SUSPEND]      = { SPECIAL_SUSPEND_TARGET,      "suspend",      "replace-irreversibly" },
2065         [ACTION_HIBERNATE]    = { SPECIAL_HIBERNATE_TARGET,    "hibernate",    "replace-irreversibly" },
2066         [ACTION_HYBRID_SLEEP] = { SPECIAL_HYBRID_SLEEP_TARGET, "hybrid-sleep", "replace-irreversibly" },
2067 };
2068
2069 static enum action verb_to_action(const char *verb) {
2070         enum action i;
2071
2072         for (i = _ACTION_INVALID; i < _ACTION_MAX; i++)
2073                 if (streq_ptr(action_table[i].verb, verb))
2074                         return i;
2075
2076         return _ACTION_INVALID;
2077 }
2078
2079 static int start_unit(sd_bus *bus, char **args) {
2080         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2081         _cleanup_set_free_free_ Set *s = NULL;
2082         const char *method, *mode, *one_name;
2083         char **name;
2084         int r;
2085
2086         assert(bus);
2087
2088         ask_password_agent_open_if_enabled();
2089
2090         if (arg_action == ACTION_SYSTEMCTL) {
2091                 enum action action;
2092                 method =
2093                         streq(args[0], "stop") ||
2094                         streq(args[0], "condstop")              ? "StopUnit" :
2095                         streq(args[0], "reload")                ? "ReloadUnit" :
2096                         streq(args[0], "restart")               ? "RestartUnit" :
2097
2098                         streq(args[0], "try-restart")           ||
2099                         streq(args[0], "condrestart")           ? "TryRestartUnit" :
2100
2101                         streq(args[0], "reload-or-restart")     ? "ReloadOrRestartUnit" :
2102
2103                         streq(args[0], "reload-or-try-restart") ||
2104                         streq(args[0], "condreload")            ||
2105                         streq(args[0], "force-reload")          ? "ReloadOrTryRestartUnit" :
2106                                                                   "StartUnit";
2107                 action = verb_to_action(args[0]);
2108
2109                 mode = streq(args[0], "isolate") ? "isolate" :
2110                        action_table[action].mode ?: arg_job_mode;
2111
2112                 one_name = action_table[action].target;
2113         } else {
2114                 assert(arg_action < ELEMENTSOF(action_table));
2115                 assert(action_table[arg_action].target);
2116
2117                 method = "StartUnit";
2118
2119                 mode = action_table[arg_action].mode;
2120                 one_name = action_table[arg_action].target;
2121         }
2122
2123         if (!arg_no_block) {
2124                 r = enable_wait_for_jobs(bus);
2125                 if (r < 0) {
2126                         log_error("Could not watch jobs: %s", strerror(-r));
2127                         return r;
2128                 }
2129
2130                 s = set_new(string_hash_func, string_compare_func);
2131                 if (!s)
2132                         return log_oom();
2133         }
2134
2135         if (one_name) {
2136                 r = start_unit_one(bus, method, one_name, mode, &error, s);
2137                 if (r < 0)
2138                         r = translate_bus_error_to_exit_status(r, &error);
2139         } else {
2140                 r = 0;
2141
2142                 STRV_FOREACH(name, args+1) {
2143                         int q;
2144
2145                         q = start_unit_one(bus, method, *name, mode, &error, s);
2146                         if (q < 0) {
2147                                 r = translate_bus_error_to_exit_status(r, &error);
2148                                 sd_bus_error_free(&error);
2149                         }
2150                 }
2151         }
2152
2153         if (!arg_no_block) {
2154                 int q;
2155
2156                 q = wait_for_jobs(bus, s);
2157                 if (q < 0)
2158                         return q;
2159
2160                 /* When stopping units, warn if they can still be triggered by
2161                  * another active unit (socket, path, timer) */
2162                 if (!arg_quiet && streq(method, "StopUnit")) {
2163                         if (one_name)
2164                                 check_triggering_units(bus, one_name);
2165                         else
2166                                 STRV_FOREACH(name, args+1)
2167                                         check_triggering_units(bus, *name);
2168                 }
2169         }
2170
2171         return r;
2172 }
2173
2174 /* Ask systemd-logind, which might grant access to unprivileged users
2175  * through PolicyKit */
2176 static int reboot_with_logind(sd_bus *bus, enum action a) {
2177 #ifdef HAVE_LOGIND
2178         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2179         const char *method;
2180         int r;
2181
2182         if (!bus)
2183                 return -EIO;
2184
2185         polkit_agent_open_if_enabled();
2186
2187         switch (a) {
2188
2189         case ACTION_REBOOT:
2190                 method = "Reboot";
2191                 break;
2192
2193         case ACTION_POWEROFF:
2194                 method = "PowerOff";
2195                 break;
2196
2197         case ACTION_SUSPEND:
2198                 method = "Suspend";
2199                 break;
2200
2201         case ACTION_HIBERNATE:
2202                 method = "Hibernate";
2203                 break;
2204
2205         case ACTION_HYBRID_SLEEP:
2206                 method = "HybridSleep";
2207                 break;
2208
2209         default:
2210                 return -EINVAL;
2211         }
2212
2213         r = sd_bus_call_method(
2214                         bus,
2215                         "org.freedesktop.login1",
2216                         "/org/freedesktop/login1",
2217                         "org.freedesktop.login1.Manager",
2218                         method,
2219                         &error,
2220                         NULL,
2221                         "b", true);
2222         if (r < 0)
2223                 log_error("Failed to execute operation: %s", bus_error_message(&error, r));
2224
2225         return r;
2226 #else
2227         return -ENOSYS;
2228 #endif
2229 }
2230
2231 static int check_inhibitors(sd_bus *bus, enum action a) {
2232 #ifdef HAVE_LOGIND
2233         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2234         _cleanup_strv_free_ char **sessions = NULL;
2235         const char *what, *who, *why, *mode;
2236         uint32_t uid, pid;
2237         unsigned c = 0;
2238         char **s;
2239         int r;
2240
2241         if (!bus)
2242                 return 0;
2243
2244         if (arg_ignore_inhibitors || arg_force > 0)
2245                 return 0;
2246
2247         if (arg_when > 0)
2248                 return 0;
2249
2250         if (geteuid() == 0)
2251                 return 0;
2252
2253         if (!on_tty())
2254                 return 0;
2255
2256         r = sd_bus_call_method(
2257                         bus,
2258                         "org.freedesktop.login1",
2259                         "/org/freedesktop/login1",
2260                         "org.freedesktop.login1.Manager",
2261                         "ListInhibitors",
2262                         NULL,
2263                         &reply,
2264                         NULL);
2265         if (r < 0)
2266                 /* If logind is not around, then there are no inhibitors... */
2267                 return 0;
2268
2269         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssuu)");
2270         if (r < 0)
2271                 return bus_log_parse_error(r);
2272
2273         while ((r = sd_bus_message_read(reply, "(ssssuu)", &what, &who, &why, &mode, &uid, &pid)) > 0) {
2274                 _cleanup_free_ char *comm = NULL, *user = NULL;
2275                 _cleanup_strv_free_ char **sv = NULL;
2276
2277                 if (!streq(mode, "block"))
2278                         continue;
2279
2280                 sv = strv_split(what, ":");
2281                 if (!sv)
2282                         return log_oom();
2283
2284                 if (!strv_contains(sv,
2285                                   a == ACTION_HALT ||
2286                                   a == ACTION_POWEROFF ||
2287                                   a == ACTION_REBOOT ||
2288                                   a == ACTION_KEXEC ? "shutdown" : "sleep"))
2289                         continue;
2290
2291                 get_process_comm(pid, &comm);
2292                 user = uid_to_name(uid);
2293
2294                 log_warning("Operation inhibited by \"%s\" (PID %lu \"%s\", user %s), reason is \"%s\".",
2295                             who, (unsigned long) pid, strna(comm), strna(user), why);
2296
2297                 c++;
2298         }
2299         if (r < 0)
2300                 return bus_log_parse_error(r);
2301
2302         r = sd_bus_message_exit_container(reply);
2303         if (r < 0)
2304                 return bus_log_parse_error(r);
2305
2306         /* Check for current sessions */
2307         sd_get_sessions(&sessions);
2308         STRV_FOREACH(s, sessions) {
2309                 _cleanup_free_ char *type = NULL, *tty = NULL, *seat = NULL, *user = NULL, *service = NULL, *class = NULL;
2310
2311                 if (sd_session_get_uid(*s, &uid) < 0 || uid == getuid())
2312                         continue;
2313
2314                 if (sd_session_get_class(*s, &class) < 0 || !streq(class, "user"))
2315                         continue;
2316
2317                 if (sd_session_get_type(*s, &type) < 0 || (!streq(type, "x11") && !streq(type, "tty")))
2318                         continue;
2319
2320                 sd_session_get_tty(*s, &tty);
2321                 sd_session_get_seat(*s, &seat);
2322                 sd_session_get_service(*s, &service);
2323                 user = uid_to_name(uid);
2324
2325                 log_warning("User %s is logged in on %s.", strna(user), isempty(tty) ? (isempty(seat) ? strna(service) : seat) : tty);
2326                 c++;
2327         }
2328
2329         if (c <= 0)
2330                 return 0;
2331
2332         log_error("Please retry operation after closing inhibitors and logging out other users.\nAlternatively, ignore inhibitors and users with 'systemctl %s -i'.",
2333                   action_table[a].verb);
2334
2335         return -EPERM;
2336 #else
2337         return 0;
2338 #endif
2339 }
2340
2341 static int start_special(sd_bus *bus, char **args) {
2342         enum action a;
2343         int r;
2344
2345         assert(args);
2346
2347         a = verb_to_action(args[0]);
2348
2349         r = check_inhibitors(bus, a);
2350         if (r < 0)
2351                 return r;
2352
2353         if (arg_force >= 2 && geteuid() != 0) {
2354                 log_error("Must be root.");
2355                 return -EPERM;
2356         }
2357
2358         if (arg_force >= 2 &&
2359             (a == ACTION_HALT ||
2360              a == ACTION_POWEROFF ||
2361              a == ACTION_REBOOT))
2362                 return halt_now(a);
2363
2364         if (arg_force >= 1 &&
2365             (a == ACTION_HALT ||
2366              a == ACTION_POWEROFF ||
2367              a == ACTION_REBOOT ||
2368              a == ACTION_KEXEC ||
2369              a == ACTION_EXIT))
2370                 return daemon_reload(bus, args);
2371
2372         /* first try logind, to allow authentication with polkit */
2373         if (geteuid() != 0 &&
2374             (a == ACTION_POWEROFF ||
2375              a == ACTION_REBOOT ||
2376              a == ACTION_SUSPEND ||
2377              a == ACTION_HIBERNATE ||
2378              a == ACTION_HYBRID_SLEEP)) {
2379                 r = reboot_with_logind(bus, a);
2380                 if (r >= 0)
2381                         return r;
2382         }
2383
2384         r = start_unit(bus, args);
2385         if (r == EXIT_SUCCESS)
2386                 warn_wall(a);
2387
2388         return r;
2389 }
2390
2391 static int check_unit_active(sd_bus *bus, char **args) {
2392         char **name;
2393         int r = 3; /* According to LSB: "program is not running" */
2394
2395         assert(bus);
2396         assert(args);
2397
2398         STRV_FOREACH(name, args+1) {
2399                 int state;
2400
2401                 state = check_one_unit(bus, *name, "active\0reloading\0", arg_quiet);
2402                 if (state < 0)
2403                         return state;
2404                 if (state > 0)
2405                         r = 0;
2406         }
2407
2408         return r;
2409 }
2410
2411 static int check_unit_failed(sd_bus *bus, char **args) {
2412         char **name;
2413         int r = 1;
2414
2415         assert(bus);
2416         assert(args);
2417
2418         STRV_FOREACH(name, args+1) {
2419                 int state;
2420
2421                 state = check_one_unit(bus, *name, "failed\0", arg_quiet);
2422                 if (state < 0)
2423                         return state;
2424                 if (state > 0)
2425                         r = 0;
2426         }
2427
2428         return r;
2429 }
2430
2431 static int kill_unit(sd_bus *bus, char **args) {
2432         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2433         char **name;
2434         int r = 0;
2435
2436         assert(bus);
2437         assert(args);
2438
2439         if (!arg_kill_who)
2440                 arg_kill_who = "all";
2441
2442         STRV_FOREACH(name, args+1) {
2443                 _cleanup_free_ char *n = NULL;
2444
2445                 n = unit_name_mangle(*name);
2446                 if (!n)
2447                         return log_oom();
2448
2449                 r = sd_bus_call_method(
2450                                 bus,
2451                                 "org.freedesktop.systemd1",
2452                                 "/org/freedesktop/systemd1",
2453                                 "org.freedesktop.systemd1.Manager",
2454                                 "KillUnit",
2455                                 &error,
2456                                 NULL,
2457                                 "ssi", n, arg_kill_who, arg_signal);
2458                 if (r < 0) {
2459                         log_error("Failed to kill unit %s: %s", n, bus_error_message(&error, r));
2460                         return r;
2461                 }
2462         }
2463
2464         return 0;
2465 }
2466
2467 typedef struct ExecStatusInfo {
2468         char *name;
2469
2470         char *path;
2471         char **argv;
2472
2473         bool ignore;
2474
2475         usec_t start_timestamp;
2476         usec_t exit_timestamp;
2477         pid_t pid;
2478         int code;
2479         int status;
2480
2481         LIST_FIELDS(struct ExecStatusInfo, exec);
2482 } ExecStatusInfo;
2483
2484 static void exec_status_info_free(ExecStatusInfo *i) {
2485         assert(i);
2486
2487         free(i->name);
2488         free(i->path);
2489         strv_free(i->argv);
2490         free(i);
2491 }
2492
2493 static int exec_status_info_deserialize(sd_bus_message *m, ExecStatusInfo *i) {
2494         uint64_t start_timestamp, exit_timestamp, start_timestamp_monotonic, exit_timestamp_monotonic;
2495         const char *path;
2496         uint32_t pid;
2497         int32_t code, status;
2498         int ignore, r;
2499
2500         assert(m);
2501         assert(i);
2502
2503         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_STRUCT, "sasbttttuii");
2504         if (r < 0)
2505                 return bus_log_parse_error(r);
2506         else if (r == 0)
2507                 return 0;
2508
2509         r = sd_bus_message_read(m, "s", &path);
2510         if (r < 0)
2511                 return bus_log_parse_error(r);
2512
2513         i->path = strdup(path);
2514         if (!i->path)
2515                 return log_oom();
2516
2517         r = sd_bus_message_read_strv(m, &i->argv);
2518         if (r < 0)
2519                 return bus_log_parse_error(r);
2520
2521         r = sd_bus_message_read(m,
2522                                 "bttttuii",
2523                                 &ignore,
2524                                 &start_timestamp, &start_timestamp_monotonic,
2525                                 &exit_timestamp, &exit_timestamp_monotonic,
2526                                 &pid,
2527                                 &code, &status);
2528         if (r < 0)
2529                 return bus_log_parse_error(r);
2530
2531         i->ignore = ignore;
2532         i->start_timestamp = (usec_t) start_timestamp;
2533         i->exit_timestamp = (usec_t) exit_timestamp;
2534         i->pid = (pid_t) pid;
2535         i->code = code;
2536         i->status = status;
2537
2538         r = sd_bus_message_exit_container(m);
2539         if (r < 0)
2540                 return bus_log_parse_error(r);
2541
2542         return 1;
2543 }
2544
2545 typedef struct UnitStatusInfo {
2546         const char *id;
2547         const char *load_state;
2548         const char *active_state;
2549         const char *sub_state;
2550         const char *unit_file_state;
2551
2552         const char *description;
2553         const char *following;
2554
2555         char **documentation;
2556
2557         const char *fragment_path;
2558         const char *source_path;
2559         const char *control_group;
2560
2561         char **dropin_paths;
2562
2563         const char *load_error;
2564         const char *result;
2565
2566         usec_t inactive_exit_timestamp;
2567         usec_t inactive_exit_timestamp_monotonic;
2568         usec_t active_enter_timestamp;
2569         usec_t active_exit_timestamp;
2570         usec_t inactive_enter_timestamp;
2571
2572         bool need_daemon_reload;
2573
2574         /* Service */
2575         pid_t main_pid;
2576         pid_t control_pid;
2577         const char *status_text;
2578         const char *pid_file;
2579         bool running:1;
2580
2581         usec_t start_timestamp;
2582         usec_t exit_timestamp;
2583
2584         int exit_code, exit_status;
2585
2586         usec_t condition_timestamp;
2587         bool condition_result;
2588         bool failed_condition_trigger;
2589         bool failed_condition_negate;
2590         const char *failed_condition;
2591         const char *failed_condition_param;
2592
2593         /* Socket */
2594         unsigned n_accepted;
2595         unsigned n_connections;
2596         bool accept;
2597
2598         /* Pairs of type, path */
2599         char **listen;
2600
2601         /* Device */
2602         const char *sysfs_path;
2603
2604         /* Mount, Automount */
2605         const char *where;
2606
2607         /* Swap */
2608         const char *what;
2609
2610         LIST_HEAD(ExecStatusInfo, exec);
2611 } UnitStatusInfo;
2612
2613 static void print_status_info(
2614                 UnitStatusInfo *i,
2615                 bool *ellipsized) {
2616
2617         ExecStatusInfo *p;
2618         const char *on, *off, *ss;
2619         usec_t timestamp;
2620         char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], *s1;
2621         char since2[FORMAT_TIMESTAMP_MAX], *s2;
2622         const char *path;
2623         int flags =
2624                 arg_all * OUTPUT_SHOW_ALL |
2625                 (!on_tty() || pager_have()) * OUTPUT_FULL_WIDTH |
2626                 on_tty() * OUTPUT_COLOR |
2627                 !arg_quiet * OUTPUT_WARN_CUTOFF |
2628                 arg_full * OUTPUT_FULL_WIDTH;
2629         char **t, **t2;
2630
2631         assert(i);
2632
2633         /* This shows pretty information about a unit. See
2634          * print_property() for a low-level property printer */
2635
2636         printf("%s", strna(i->id));
2637
2638         if (i->description && !streq_ptr(i->id, i->description))
2639                 printf(" - %s", i->description);
2640
2641         printf("\n");
2642
2643         if (i->following)
2644                 printf("   Follow: unit currently follows state of %s\n", i->following);
2645
2646         if (streq_ptr(i->load_state, "error")) {
2647                 on = ansi_highlight_red();
2648                 off = ansi_highlight_off();
2649         } else
2650                 on = off = "";
2651
2652         path = i->source_path ? i->source_path : i->fragment_path;
2653
2654         if (i->load_error)
2655                 printf("   Loaded: %s%s%s (Reason: %s)\n",
2656                        on, strna(i->load_state), off, i->load_error);
2657         else if (path && i->unit_file_state)
2658                 printf("   Loaded: %s%s%s (%s; %s)\n",
2659                        on, strna(i->load_state), off, path, i->unit_file_state);
2660         else if (path)
2661                 printf("   Loaded: %s%s%s (%s)\n",
2662                        on, strna(i->load_state), off, path);
2663         else
2664                 printf("   Loaded: %s%s%s\n",
2665                        on, strna(i->load_state), off);
2666
2667         if (!strv_isempty(i->dropin_paths)) {
2668                 _cleanup_free_ char *dir = NULL;
2669                 bool last = false;
2670                 char ** dropin;
2671
2672                 STRV_FOREACH(dropin, i->dropin_paths) {
2673                         if (! dir || last) {
2674                                 printf(dir ? "        " : "  Drop-In: ");
2675
2676                                 free(dir);
2677                                 dir = NULL;
2678
2679                                 if (path_get_parent(*dropin, &dir) < 0) {
2680                                         log_oom();
2681                                         return;
2682                                 }
2683
2684                                 printf("%s\n           %s", dir,
2685                                        draw_special_char(DRAW_TREE_RIGHT));
2686                         }
2687
2688                         last = ! (*(dropin + 1) && startswith(*(dropin + 1), dir));
2689
2690                         printf("%s%s", path_get_file_name(*dropin), last ? "\n" : ", ");
2691                 }
2692         }
2693
2694         ss = streq_ptr(i->active_state, i->sub_state) ? NULL : i->sub_state;
2695
2696         if (streq_ptr(i->active_state, "failed")) {
2697                 on = ansi_highlight_red();
2698                 off = ansi_highlight_off();
2699         } else if (streq_ptr(i->active_state, "active") || streq_ptr(i->active_state, "reloading")) {
2700                 on = ansi_highlight_green();
2701                 off = ansi_highlight_off();
2702         } else
2703                 on = off = "";
2704
2705         if (ss)
2706                 printf("   Active: %s%s (%s)%s",
2707                        on, strna(i->active_state), ss, off);
2708         else
2709                 printf("   Active: %s%s%s",
2710                        on, strna(i->active_state), off);
2711
2712         if (!isempty(i->result) && !streq(i->result, "success"))
2713                 printf(" (Result: %s)", i->result);
2714
2715         timestamp = (streq_ptr(i->active_state, "active")      ||
2716                      streq_ptr(i->active_state, "reloading"))   ? i->active_enter_timestamp :
2717                     (streq_ptr(i->active_state, "inactive")    ||
2718                      streq_ptr(i->active_state, "failed"))      ? i->inactive_enter_timestamp :
2719                     streq_ptr(i->active_state, "activating")    ? i->inactive_exit_timestamp :
2720                                                                   i->active_exit_timestamp;
2721
2722         s1 = format_timestamp_relative(since1, sizeof(since1), timestamp);
2723         s2 = format_timestamp(since2, sizeof(since2), timestamp);
2724
2725         if (s1)
2726                 printf(" since %s; %s\n", s2, s1);
2727         else if (s2)
2728                 printf(" since %s\n", s2);
2729         else
2730                 printf("\n");
2731
2732         if (!i->condition_result && i->condition_timestamp > 0) {
2733                 s1 = format_timestamp_relative(since1, sizeof(since1), i->condition_timestamp);
2734                 s2 = format_timestamp(since2, sizeof(since2), i->condition_timestamp);
2735
2736                 printf("           start condition failed at %s%s%s\n",
2737                        s2, s1 ? "; " : "", s1 ? s1 : "");
2738                 if (i->failed_condition_trigger)
2739                         printf("           none of the trigger conditions were met\n");
2740                 else if (i->failed_condition)
2741                         printf("           %s=%s%s was not met\n",
2742                                i->failed_condition,
2743                                i->failed_condition_negate ? "!" : "",
2744                                i->failed_condition_param);
2745         }
2746
2747         if (i->sysfs_path)
2748                 printf("   Device: %s\n", i->sysfs_path);
2749         if (i->where)
2750                 printf("    Where: %s\n", i->where);
2751         if (i->what)
2752                 printf("     What: %s\n", i->what);
2753
2754         STRV_FOREACH(t, i->documentation)
2755                 printf(" %*s %s\n", 9, t == i->documentation ? "Docs:" : "", *t);
2756
2757         STRV_FOREACH_PAIR(t, t2, i->listen)
2758                 printf(" %*s %s (%s)\n", 9, t == i->listen ? "Listen:" : "", *t2, *t);
2759
2760         if (i->accept)
2761                 printf(" Accepted: %u; Connected: %u\n", i->n_accepted, i->n_connections);
2762
2763         LIST_FOREACH(exec, p, i->exec) {
2764                 _cleanup_free_ char *argv = NULL;
2765                 bool good;
2766
2767                 /* Only show exited processes here */
2768                 if (p->code == 0)
2769                         continue;
2770
2771                 argv = strv_join(p->argv, " ");
2772                 printf("  Process: %u %s=%s ", p->pid, p->name, strna(argv));
2773
2774                 good = is_clean_exit_lsb(p->code, p->status, NULL);
2775                 if (!good) {
2776                         on = ansi_highlight_red();
2777                         off = ansi_highlight_off();
2778                 } else
2779                         on = off = "";
2780
2781                 printf("%s(code=%s, ", on, sigchld_code_to_string(p->code));
2782
2783                 if (p->code == CLD_EXITED) {
2784                         const char *c;
2785
2786                         printf("status=%i", p->status);
2787
2788                         c = exit_status_to_string(p->status, EXIT_STATUS_SYSTEMD);
2789                         if (c)
2790                                 printf("/%s", c);
2791
2792                 } else
2793                         printf("signal=%s", signal_to_string(p->status));
2794
2795                 printf(")%s\n", off);
2796
2797                 if (i->main_pid == p->pid &&
2798                     i->start_timestamp == p->start_timestamp &&
2799                     i->exit_timestamp == p->start_timestamp)
2800                         /* Let's not show this twice */
2801                         i->main_pid = 0;
2802
2803                 if (p->pid == i->control_pid)
2804                         i->control_pid = 0;
2805         }
2806
2807         if (i->main_pid > 0 || i->control_pid > 0) {
2808                 if (i->main_pid > 0) {
2809                         printf(" Main PID: %u", (unsigned) i->main_pid);
2810
2811                         if (i->running) {
2812                                 _cleanup_free_ char *comm = NULL;
2813                                 get_process_comm(i->main_pid, &comm);
2814                                 if (comm)
2815                                         printf(" (%s)", comm);
2816                         } else if (i->exit_code > 0) {
2817                                 printf(" (code=%s, ", sigchld_code_to_string(i->exit_code));
2818
2819                                 if (i->exit_code == CLD_EXITED) {
2820                                         const char *c;
2821
2822                                         printf("status=%i", i->exit_status);
2823
2824                                         c = exit_status_to_string(i->exit_status, EXIT_STATUS_SYSTEMD);
2825                                         if (c)
2826                                                 printf("/%s", c);
2827
2828                                 } else
2829                                         printf("signal=%s", signal_to_string(i->exit_status));
2830                                 printf(")");
2831                         }
2832
2833                         if (i->control_pid > 0)
2834                                 printf(";");
2835                 }
2836
2837                 if (i->control_pid > 0) {
2838                         _cleanup_free_ char *c = NULL;
2839
2840                         printf(" %8s: %u", i->main_pid ? "" : " Control", (unsigned) i->control_pid);
2841
2842                         get_process_comm(i->control_pid, &c);
2843                         if (c)
2844                                 printf(" (%s)", c);
2845                 }
2846
2847                 printf("\n");
2848         }
2849
2850         if (i->status_text)
2851                 printf("   Status: \"%s\"\n", i->status_text);
2852
2853         if (i->control_group &&
2854             (i->main_pid > 0 || i->control_pid > 0 || cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, i->control_group, false) == 0)) {
2855                 unsigned c;
2856
2857                 printf("   CGroup: %s\n", i->control_group);
2858
2859                 if (arg_transport == BUS_TRANSPORT_LOCAL || arg_transport == BUS_TRANSPORT_CONTAINER) {
2860                         unsigned k = 0;
2861                         pid_t extra[2];
2862                         char prefix[] = "           ";
2863
2864                         c = columns();
2865                         if (c > sizeof(prefix) - 1)
2866                                 c -= sizeof(prefix) - 1;
2867                         else
2868                                 c = 0;
2869
2870                         if (i->main_pid > 0)
2871                                 extra[k++] = i->main_pid;
2872
2873                         if (i->control_pid > 0)
2874                                 extra[k++] = i->control_pid;
2875
2876                         show_cgroup_and_extra(SYSTEMD_CGROUP_CONTROLLER, i->control_group, prefix,
2877                                                       c, false, extra, k, flags);
2878                 }
2879         }
2880
2881         if (i->id && arg_transport == BUS_TRANSPORT_LOCAL) {
2882                 printf("\n");
2883                 show_journal_by_unit(stdout,
2884                                      i->id,
2885                                      arg_output,
2886                                      0,
2887                                      i->inactive_exit_timestamp_monotonic,
2888                                      arg_lines,
2889                                      getuid(),
2890                                      flags,
2891                                      arg_scope == UNIT_FILE_SYSTEM,
2892                                      ellipsized);
2893         }
2894
2895         if (i->need_daemon_reload)
2896                 printf("\n%sWarning:%s Unit file changed on disk, 'systemctl %sdaemon-reload' recommended.\n",
2897                        ansi_highlight_red(),
2898                        ansi_highlight_off(),
2899                        arg_scope == UNIT_FILE_SYSTEM ? "" : "--user ");
2900 }
2901
2902 static void show_unit_help(UnitStatusInfo *i) {
2903         char **p;
2904
2905         assert(i);
2906
2907         if (!i->documentation) {
2908                 log_info("Documentation for %s not known.", i->id);
2909                 return;
2910         }
2911
2912         STRV_FOREACH(p, i->documentation) {
2913
2914                 if (startswith(*p, "man:")) {
2915                         const char *args[4] = { "man", NULL, NULL, NULL };
2916                         _cleanup_free_ char *page = NULL, *section = NULL;
2917                         char *e = NULL;
2918                         pid_t pid;
2919                         size_t k;
2920
2921                         k = strlen(*p);
2922
2923                         if ((*p)[k-1] == ')')
2924                                 e = strrchr(*p, '(');
2925
2926                         if (e) {
2927                                 page = strndup((*p) + 4, e - *p - 4);
2928                                 section = strndup(e + 1, *p + k - e - 2);
2929                                 if (!page || !section) {
2930                                         log_oom();
2931                                         return;
2932                                 }
2933
2934                                 args[1] = section;
2935                                 args[2] = page;
2936                         } else
2937                                 args[1] = *p + 4;
2938
2939                         pid = fork();
2940                         if (pid < 0) {
2941                                 log_error("Failed to fork: %m");
2942                                 continue;
2943                         }
2944
2945                         if (pid == 0) {
2946                                 /* Child */
2947                                 execvp(args[0], (char**) args);
2948                                 log_error("Failed to execute man: %m");
2949                                 _exit(EXIT_FAILURE);
2950                         }
2951
2952                         wait_for_terminate(pid, NULL);
2953                 } else
2954                         log_info("Can't show: %s", *p);
2955         }
2956 }
2957
2958 static int status_property(const char *name, sd_bus_message *m, UnitStatusInfo *i, const char *contents) {
2959         int r;
2960
2961         assert(name);
2962         assert(m);
2963         assert(i);
2964
2965         switch (contents[0]) {
2966
2967         case SD_BUS_TYPE_STRING: {
2968                 const char *s;
2969
2970                 r = sd_bus_message_read(m, "s", &s);
2971                 if (r < 0)
2972                         return bus_log_parse_error(r);
2973
2974                 if (!isempty(s)) {
2975                         if (streq(name, "Id"))
2976                                 i->id = s;
2977                         else if (streq(name, "LoadState"))
2978                                 i->load_state = s;
2979                         else if (streq(name, "ActiveState"))
2980                                 i->active_state = s;
2981                         else if (streq(name, "SubState"))
2982                                 i->sub_state = s;
2983                         else if (streq(name, "Description"))
2984                                 i->description = s;
2985                         else if (streq(name, "FragmentPath"))
2986                                 i->fragment_path = s;
2987                         else if (streq(name, "SourcePath"))
2988                                 i->source_path = s;
2989 #ifndef NOLEGACY
2990                         else if (streq(name, "DefaultControlGroup")) {
2991                                 const char *e;
2992                                 e = startswith(s, SYSTEMD_CGROUP_CONTROLLER ":");
2993                                 if (e)
2994                                         i->control_group = e;
2995                         }
2996 #endif
2997                         else if (streq(name, "ControlGroup"))
2998                                 i->control_group = s;
2999                         else if (streq(name, "StatusText"))
3000                                 i->status_text = s;
3001                         else if (streq(name, "PIDFile"))
3002                                 i->pid_file = s;
3003                         else if (streq(name, "SysFSPath"))
3004                                 i->sysfs_path = s;
3005                         else if (streq(name, "Where"))
3006                                 i->where = s;
3007                         else if (streq(name, "What"))
3008                                 i->what = s;
3009                         else if (streq(name, "Following"))
3010                                 i->following = s;
3011                         else if (streq(name, "UnitFileState"))
3012                                 i->unit_file_state = s;
3013                         else if (streq(name, "Result"))
3014                                 i->result = s;
3015                 }
3016
3017                 break;
3018         }
3019
3020         case SD_BUS_TYPE_BOOLEAN: {
3021                 int b;
3022
3023                 r = sd_bus_message_read(m, "b", &b);
3024                 if (r < 0)
3025                         return bus_log_parse_error(r);
3026
3027                 if (streq(name, "Accept"))
3028                         i->accept = b;
3029                 else if (streq(name, "NeedDaemonReload"))
3030                         i->need_daemon_reload = b;
3031                 else if (streq(name, "ConditionResult"))
3032                         i->condition_result = b;
3033
3034                 break;
3035         }
3036
3037         case SD_BUS_TYPE_UINT32: {
3038                 uint32_t u;
3039
3040                 r = sd_bus_message_read(m, "u", &u);
3041                 if (r < 0)
3042                         return bus_log_parse_error(r);
3043
3044                 if (streq(name, "MainPID")) {
3045                         if (u > 0) {
3046                                 i->main_pid = (pid_t) u;
3047                                 i->running = true;
3048                         }
3049                 } else if (streq(name, "ControlPID"))
3050                         i->control_pid = (pid_t) u;
3051                 else if (streq(name, "ExecMainPID")) {
3052                         if (u > 0)
3053                                 i->main_pid = (pid_t) u;
3054                 } else if (streq(name, "NAccepted"))
3055                         i->n_accepted = u;
3056                 else if (streq(name, "NConnections"))
3057                         i->n_connections = u;
3058
3059                 break;
3060         }
3061
3062         case SD_BUS_TYPE_INT32: {
3063                 int32_t j;
3064
3065                 r = sd_bus_message_read(m, "i", &j);
3066                 if (r < 0)
3067                         return bus_log_parse_error(r);
3068
3069                 if (streq(name, "ExecMainCode"))
3070                         i->exit_code = (int) j;
3071                 else if (streq(name, "ExecMainStatus"))
3072                         i->exit_status = (int) j;
3073
3074                 break;
3075         }
3076
3077         case SD_BUS_TYPE_UINT64: {
3078                 uint64_t u;
3079
3080                 r = sd_bus_message_read(m, "t", &u);
3081                 if (r < 0)
3082                         return bus_log_parse_error(r);
3083
3084                 if (streq(name, "ExecMainStartTimestamp"))
3085                         i->start_timestamp = (usec_t) u;
3086                 else if (streq(name, "ExecMainExitTimestamp"))
3087                         i->exit_timestamp = (usec_t) u;
3088                 else if (streq(name, "ActiveEnterTimestamp"))
3089                         i->active_enter_timestamp = (usec_t) u;
3090                 else if (streq(name, "InactiveEnterTimestamp"))
3091                         i->inactive_enter_timestamp = (usec_t) u;
3092                 else if (streq(name, "InactiveExitTimestamp"))
3093                         i->inactive_exit_timestamp = (usec_t) u;
3094                 else if (streq(name, "InactiveExitTimestampMonotonic"))
3095                         i->inactive_exit_timestamp_monotonic = (usec_t) u;
3096                 else if (streq(name, "ActiveExitTimestamp"))
3097                         i->active_exit_timestamp = (usec_t) u;
3098                 else if (streq(name, "ConditionTimestamp"))
3099                         i->condition_timestamp = (usec_t) u;
3100
3101                 break;
3102         }
3103
3104         case SD_BUS_TYPE_ARRAY:
3105
3106                 if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && startswith(name, "Exec")) {
3107                         _cleanup_free_ ExecStatusInfo *info = NULL;
3108
3109                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sasbttttuii)");
3110                         if (r < 0)
3111                                 return bus_log_parse_error(r);
3112
3113                         info = new0(ExecStatusInfo, 1);
3114                         if (!info)
3115                                 return log_oom();
3116
31