chiark / gitweb /
Reject invalid quoted strings
[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 #include <fnmatch.h>
41
42 #include "sd-daemon.h"
43 #include "sd-shutdown.h"
44 #include "sd-login.h"
45 #include "sd-bus.h"
46 #include "log.h"
47 #include "util.h"
48 #include "macro.h"
49 #include "set.h"
50 #include "utmp-wtmp.h"
51 #include "special.h"
52 #include "initreq.h"
53 #include "path-util.h"
54 #include "strv.h"
55 #include "cgroup-show.h"
56 #include "cgroup-util.h"
57 #include "list.h"
58 #include "path-lookup.h"
59 #include "conf-parser.h"
60 #include "exit-status.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 "env-util.h"
71 #include "bus-util.h"
72 #include "bus-message.h"
73 #include "bus-error.h"
74 #include "bus-errors.h"
75
76 static char **arg_types = NULL;
77 static char **arg_states = NULL;
78 static char **arg_properties = NULL;
79 static bool arg_all = false;
80 static enum dependency {
81         DEPENDENCY_FORWARD,
82         DEPENDENCY_REVERSE,
83         DEPENDENCY_AFTER,
84         DEPENDENCY_BEFORE,
85         _DEPENDENCY_MAX
86 } arg_dependency = DEPENDENCY_FORWARD;
87 static const char *arg_job_mode = "replace";
88 static UnitFileScope arg_scope = UNIT_FILE_SYSTEM;
89 static bool arg_no_block = false;
90 static bool arg_no_legend = false;
91 static bool arg_no_pager = false;
92 static bool arg_no_wtmp = false;
93 static bool arg_no_wall = false;
94 static bool arg_no_reload = false;
95 static bool arg_show_types = false;
96 static bool arg_ignore_inhibitors = false;
97 static bool arg_dry = false;
98 static bool arg_quiet = false;
99 static bool arg_full = false;
100 static bool arg_recursive = false;
101 static int arg_force = 0;
102 static bool arg_ask_password = true;
103 static bool arg_runtime = false;
104 static UnitFilePresetMode arg_preset_mode = UNIT_FILE_PRESET_FULL;
105 static char **arg_wall = NULL;
106 static const char *arg_kill_who = NULL;
107 static int arg_signal = SIGTERM;
108 static const char *arg_root = NULL;
109 static usec_t arg_when = 0;
110 static enum action {
111         _ACTION_INVALID,
112         ACTION_SYSTEMCTL,
113         ACTION_HALT,
114         ACTION_POWEROFF,
115         ACTION_REBOOT,
116         ACTION_KEXEC,
117         ACTION_EXIT,
118         ACTION_SUSPEND,
119         ACTION_HIBERNATE,
120         ACTION_HYBRID_SLEEP,
121         ACTION_RUNLEVEL2,
122         ACTION_RUNLEVEL3,
123         ACTION_RUNLEVEL4,
124         ACTION_RUNLEVEL5,
125         ACTION_RESCUE,
126         ACTION_EMERGENCY,
127         ACTION_DEFAULT,
128         ACTION_RELOAD,
129         ACTION_REEXEC,
130         ACTION_RUNLEVEL,
131         ACTION_CANCEL_SHUTDOWN,
132         _ACTION_MAX
133 } arg_action = ACTION_SYSTEMCTL;
134 static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;
135 static char *arg_host = NULL;
136 static unsigned arg_lines = 10;
137 static OutputMode arg_output = OUTPUT_SHORT;
138 static bool arg_plain = false;
139
140 static const struct {
141         const char *verb;
142         const char *method;
143 } unit_actions[] = {
144         { "start",                 "StartUnit" },
145         { "stop",                  "StopUnit" },
146         { "condstop",              "StopUnit" },
147         { "reload",                "ReloadUnit" },
148         { "restart",               "RestartUnit" },
149         { "try-restart",           "TryRestartUnit" },
150         { "condrestart",           "TryRestartUnit" },
151         { "reload-or-restart",     "ReloadOrRestartUnit" },
152         { "reload-or-try-restart", "ReloadOrTryRestartUnit" },
153         { "condreload",            "ReloadOrTryRestartUnit" },
154         { "force-reload",          "ReloadOrTryRestartUnit" }
155 };
156
157 static bool original_stdout_is_tty;
158
159 static int daemon_reload(sd_bus *bus, char **args);
160 static int halt_now(enum action a);
161 static int check_one_unit(sd_bus *bus, const char *name, const char *good_states, bool quiet);
162
163 static char** strv_skip_first(char **strv) {
164         if (strv_length(strv) > 0)
165                 return strv + 1;
166         return NULL;
167 }
168
169 static void pager_open_if_enabled(void) {
170
171         if (arg_no_pager)
172                 return;
173
174         pager_open(false);
175 }
176
177 static void ask_password_agent_open_if_enabled(void) {
178
179         /* Open the password agent as a child process if necessary */
180
181         if (!arg_ask_password)
182                 return;
183
184         if (arg_scope != UNIT_FILE_SYSTEM)
185                 return;
186
187         if (arg_transport != BUS_TRANSPORT_LOCAL)
188                 return;
189
190         ask_password_agent_open();
191 }
192
193 #ifdef HAVE_LOGIND
194 static void polkit_agent_open_if_enabled(void) {
195
196         /* Open the polkit agent as a child process if necessary */
197
198         if (!arg_ask_password)
199                 return;
200
201         if (arg_scope != UNIT_FILE_SYSTEM)
202                 return;
203
204         if (arg_transport != BUS_TRANSPORT_LOCAL)
205                 return;
206
207         polkit_agent_open();
208 }
209 #endif
210
211 static int translate_bus_error_to_exit_status(int r, const sd_bus_error *error) {
212         assert(error);
213
214         if (!sd_bus_error_is_set(error))
215                 return r;
216
217         if (sd_bus_error_has_name(error, SD_BUS_ERROR_ACCESS_DENIED) ||
218             sd_bus_error_has_name(error, BUS_ERROR_ONLY_BY_DEPENDENCY) ||
219             sd_bus_error_has_name(error, BUS_ERROR_NO_ISOLATION) ||
220             sd_bus_error_has_name(error, BUS_ERROR_TRANSACTION_IS_DESTRUCTIVE))
221                 return EXIT_NOPERMISSION;
222
223         if (sd_bus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT))
224                 return EXIT_NOTINSTALLED;
225
226         if (sd_bus_error_has_name(error, BUS_ERROR_JOB_TYPE_NOT_APPLICABLE) ||
227             sd_bus_error_has_name(error, SD_BUS_ERROR_NOT_SUPPORTED))
228                 return EXIT_NOTIMPLEMENTED;
229
230         if (sd_bus_error_has_name(error, BUS_ERROR_LOAD_FAILED))
231                 return EXIT_NOTCONFIGURED;
232
233         if (r != 0)
234                 return r;
235
236         return EXIT_FAILURE;
237 }
238
239 static void warn_wall(enum action a) {
240         static const char *table[_ACTION_MAX] = {
241                 [ACTION_HALT]            = "The system is going down for system halt NOW!",
242                 [ACTION_REBOOT]          = "The system is going down for reboot NOW!",
243                 [ACTION_POWEROFF]        = "The system is going down for power-off NOW!",
244                 [ACTION_KEXEC]           = "The system is going down for kexec reboot NOW!",
245                 [ACTION_RESCUE]          = "The system is going down to rescue mode NOW!",
246                 [ACTION_EMERGENCY]       = "The system is going down to emergency mode NOW!",
247                 [ACTION_CANCEL_SHUTDOWN] = "The system shutdown has been cancelled NOW!"
248         };
249
250         if (arg_no_wall)
251                 return;
252
253         if (arg_wall) {
254                 _cleanup_free_ char *p;
255
256                 p = strv_join(arg_wall, " ");
257                 if (!p) {
258                         log_oom();
259                         return;
260                 }
261
262                 if (*p) {
263                         utmp_wall(p, NULL, NULL);
264                         return;
265                 }
266         }
267
268         if (!table[a])
269                 return;
270
271         utmp_wall(table[a], NULL, NULL);
272 }
273
274 static bool avoid_bus(void) {
275
276         if (running_in_chroot() > 0)
277                 return true;
278
279         if (sd_booted() <= 0)
280                 return true;
281
282         if (!isempty(arg_root))
283                 return true;
284
285         if (arg_scope == UNIT_FILE_GLOBAL)
286                 return true;
287
288         return false;
289 }
290
291 static int compare_unit_info(const void *a, const void *b) {
292         const UnitInfo *u = a, *v = b;
293         const char *d1, *d2;
294         int r;
295
296         /* First, order by machine */
297         if (!u->machine && v->machine)
298                 return -1;
299         if (u->machine && !v->machine)
300                 return 1;
301         if (u->machine && v->machine) {
302                 r = strcasecmp(u->machine, v->machine);
303                 if (r != 0)
304                         return r;
305         }
306
307         /* Second, order by unit type */
308         d1 = strrchr(u->id, '.');
309         d2 = strrchr(v->id, '.');
310         if (d1 && d2) {
311                 r = strcasecmp(d1, d2);
312                 if (r != 0)
313                         return r;
314         }
315
316         /* Third, order by name */
317         return strcasecmp(u->id, v->id);
318 }
319
320 static bool output_show_unit(const UnitInfo *u, char **patterns) {
321         const char *dot;
322
323         if (!strv_isempty(patterns)) {
324                 char **pattern;
325
326                 STRV_FOREACH(pattern, patterns)
327                         if (fnmatch(*pattern, u->id, FNM_NOESCAPE) == 0)
328                                 return true;
329                 return false;
330         }
331
332         return (!arg_types || ((dot = strrchr(u->id, '.')) &&
333                                strv_find(arg_types, dot+1))) &&
334                 (arg_all || !(streq(u->active_state, "inactive")
335                               || u->following[0]) || u->job_id > 0);
336 }
337
338 static int output_units_list(const UnitInfo *unit_infos, unsigned c) {
339         unsigned circle_len = 0, id_len, max_id_len, load_len, active_len, sub_len, job_len, desc_len;
340         const UnitInfo *u;
341         unsigned n_shown = 0;
342         int job_count = 0;
343
344         max_id_len = strlen("UNIT");
345         load_len = strlen("LOAD");
346         active_len = strlen("ACTIVE");
347         sub_len = strlen("SUB");
348         job_len = strlen("JOB");
349         desc_len = 0;
350
351         for (u = unit_infos; u < unit_infos + c; u++) {
352                 max_id_len = MAX(max_id_len, strlen(u->id) + (u->machine ? strlen(u->machine)+1 : 0));
353                 load_len = MAX(load_len, strlen(u->load_state));
354                 active_len = MAX(active_len, strlen(u->active_state));
355                 sub_len = MAX(sub_len, strlen(u->sub_state));
356
357                 if (u->job_id != 0) {
358                         job_len = MAX(job_len, strlen(u->job_type));
359                         job_count++;
360                 }
361
362                 if (!arg_no_legend &&
363                     (streq(u->active_state, "failed") ||
364                      STR_IN_SET(u->load_state, "error", "not-found", "masked")))
365                         circle_len = 2;
366         }
367
368         if (!arg_full && original_stdout_is_tty) {
369                 unsigned basic_len;
370
371                 id_len = MIN(max_id_len, 25u);
372                 basic_len = circle_len + 5 + id_len + 5 + active_len + sub_len;
373
374                 if (job_count)
375                         basic_len += job_len + 1;
376
377                 if (basic_len < (unsigned) columns()) {
378                         unsigned extra_len, incr;
379                         extra_len = columns() - basic_len;
380
381                         /* Either UNIT already got 25, or is fully satisfied.
382                          * Grant up to 25 to DESC now. */
383                         incr = MIN(extra_len, 25u);
384                         desc_len += incr;
385                         extra_len -= incr;
386
387                         /* split the remaining space between UNIT and DESC,
388                          * but do not give UNIT more than it needs. */
389                         if (extra_len > 0) {
390                                 incr = MIN(extra_len / 2, max_id_len - id_len);
391                                 id_len += incr;
392                                 desc_len += extra_len - incr;
393                         }
394                 }
395         } else
396                 id_len = max_id_len;
397
398         for (u = unit_infos; u < unit_infos + c; u++) {
399                 _cleanup_free_ char *e = NULL, *j = NULL;
400                 const char *on_loaded = "", *off_loaded = "";
401                 const char *on_active = "", *off_active = "";
402                 const char *on_circle = "", *off_circle = "";
403                 const char *id;
404                 bool circle = false;
405
406                 if (!n_shown && !arg_no_legend) {
407
408                         if (circle_len > 0)
409                                 fputs("  ", stdout);
410
411                         printf("%-*s %-*s %-*s %-*s ",
412                                id_len, "UNIT",
413                                load_len, "LOAD",
414                                active_len, "ACTIVE",
415                                sub_len, "SUB");
416
417                         if (job_count)
418                                 printf("%-*s ", job_len, "JOB");
419
420                         if (!arg_full && arg_no_pager)
421                                 printf("%.*s\n", desc_len, "DESCRIPTION");
422                         else
423                                 printf("%s\n", "DESCRIPTION");
424                 }
425
426                 n_shown++;
427
428                 if (STR_IN_SET(u->load_state, "error", "not-found", "masked")) {
429                         on_loaded = ansi_highlight_red();
430                         on_circle = ansi_highlight_yellow();
431                         off_loaded = off_circle = ansi_highlight_off();
432                         circle = true;
433                 }
434
435                 if (streq(u->active_state, "failed")) {
436                         on_circle = on_active = ansi_highlight_red();
437                         off_circle = off_active = ansi_highlight_off();
438                         circle = true;
439                 }
440
441                 if (u->machine) {
442                         j = strjoin(u->machine, ":", u->id, NULL);
443                         if (!j)
444                                 return log_oom();
445
446                         id = j;
447                 } else
448                         id = u->id;
449
450                 if (arg_full) {
451                         e = ellipsize(id, id_len, 33);
452                         if (!e)
453                                 return log_oom();
454
455                         id = e;
456                 }
457
458                 if (circle_len > 0)
459                         printf("%s%s%s ", on_circle, circle ? draw_special_char(DRAW_BLACK_CIRCLE) : " ", off_circle);
460
461                 printf("%s%-*s%s %s%-*s%s %s%-*s %-*s%s %-*s",
462                        on_active, id_len, id, off_active,
463                        on_loaded, load_len, u->load_state, off_loaded,
464                        on_active, active_len, u->active_state,
465                        sub_len, u->sub_state, off_active,
466                        job_count ? job_len + 1 : 0, u->job_id ? u->job_type : "");
467
468                 if (desc_len > 0)
469                         printf("%.*s\n", desc_len, u->description);
470                 else
471                         printf("%s\n", u->description);
472         }
473
474         if (!arg_no_legend) {
475                 const char *on, *off;
476
477                 if (n_shown) {
478                         puts("\n"
479                              "LOAD   = Reflects whether the unit definition was properly loaded.\n"
480                              "ACTIVE = The high-level unit activation state, i.e. generalization of SUB.\n"
481                              "SUB    = The low-level unit activation state, values depend on unit type.");
482                         puts(job_count ? "JOB    = Pending job for the unit.\n" : "");
483                         on = ansi_highlight();
484                         off = ansi_highlight_off();
485                 } else {
486                         on = ansi_highlight_red();
487                         off = ansi_highlight_off();
488                 }
489
490                 if (arg_all)
491                         printf("%s%u loaded units listed.%s\n"
492                                "To show all installed unit files use 'systemctl list-unit-files'.\n",
493                                on, n_shown, off);
494                 else
495                         printf("%s%u loaded units listed.%s Pass --all to see loaded but inactive units, too.\n"
496                                "To show all installed unit files use 'systemctl list-unit-files'.\n",
497                                on, n_shown, off);
498         }
499
500         return 0;
501 }
502
503 static int get_unit_list(
504                 sd_bus *bus,
505                 const char *machine,
506                 char **patterns,
507                 UnitInfo **unit_infos,
508                 int c,
509                 sd_bus_message **_reply) {
510
511         _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
512         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
513         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
514         size_t size = c;
515         int r;
516         UnitInfo u;
517
518         assert(bus);
519         assert(unit_infos);
520         assert(_reply);
521
522         r = sd_bus_message_new_method_call(
523                         bus,
524                         &m,
525                         "org.freedesktop.systemd1",
526                         "/org/freedesktop/systemd1",
527                         "org.freedesktop.systemd1.Manager",
528                         "ListUnitsFiltered");
529
530         if (r < 0)
531                 return bus_log_create_error(r);
532
533         r = sd_bus_message_append_strv(m, arg_states);
534         if (r < 0)
535                 return bus_log_create_error(r);
536
537         r = sd_bus_call(bus, m, 0, &error, &reply);
538         if (r < 0) {
539                 log_error("Failed to list units: %s", bus_error_message(&error, r));
540                 return r;
541         }
542
543         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssssouso)");
544         if (r < 0)
545                 return bus_log_parse_error(r);
546
547         while ((r = bus_parse_unit_info(reply, &u)) > 0) {
548                 u.machine = machine;
549
550                 if (!output_show_unit(&u, patterns))
551                         continue;
552
553                 if (!GREEDY_REALLOC(*unit_infos, size, c+1))
554                         return log_oom();
555
556                 (*unit_infos)[c++] = u;
557         }
558         if (r < 0)
559                 return bus_log_parse_error(r);
560
561         r = sd_bus_message_exit_container(reply);
562         if (r < 0)
563                 return bus_log_parse_error(r);
564
565         *_reply = reply;
566         reply = NULL;
567
568         return c;
569 }
570
571 static void message_set_freep(Set **set) {
572         sd_bus_message *m;
573
574         while ((m = set_steal_first(*set)))
575                 sd_bus_message_unref(m);
576
577         set_free(*set);
578 }
579
580 static int get_unit_list_recursive(
581                 sd_bus *bus,
582                 char **patterns,
583                 UnitInfo **_unit_infos,
584                 Set **_replies,
585                 char ***_machines) {
586
587         _cleanup_free_ UnitInfo *unit_infos = NULL;
588         _cleanup_(message_set_freep) Set *replies;
589         sd_bus_message *reply;
590         int c, r;
591
592         assert(bus);
593         assert(_replies);
594         assert(_unit_infos);
595         assert(_machines);
596
597         replies = set_new(NULL, NULL);
598         if (!replies)
599                 return log_oom();
600
601         c = get_unit_list(bus, NULL, patterns, &unit_infos, 0, &reply);
602         if (c < 0)
603                 return c;
604
605         r = set_put(replies, reply);
606         if (r < 0) {
607                 sd_bus_message_unref(reply);
608                 return r;
609         }
610
611         if (arg_recursive) {
612                 _cleanup_strv_free_ char **machines = NULL;
613                 char **i;
614
615                 r = sd_get_machine_names(&machines);
616                 if (r < 0)
617                         return r;
618
619                 STRV_FOREACH(i, machines) {
620                         _cleanup_bus_unref_ sd_bus *container = NULL;
621                         int k;
622
623                         r = sd_bus_open_system_container(&container, *i);
624                         if (r < 0) {
625                                 log_error("Failed to connect to container %s: %s", *i, strerror(-r));
626                                 continue;
627                         }
628
629                         k = get_unit_list(container, *i, patterns, &unit_infos, c, &reply);
630                         if (k < 0)
631                                 return k;
632
633                         c = k;
634
635                         r = set_put(replies, reply);
636                         if (r < 0) {
637                                 sd_bus_message_unref(reply);
638                                 return r;
639                         }
640                 }
641
642                 *_machines = machines;
643                 machines = NULL;
644         } else
645                 *_machines = NULL;
646
647         *_unit_infos = unit_infos;
648         unit_infos = NULL;
649
650         *_replies = replies;
651         replies = NULL;
652
653         return c;
654 }
655
656 static int list_units(sd_bus *bus, char **args) {
657         _cleanup_free_ UnitInfo *unit_infos = NULL;
658         _cleanup_(message_set_freep) Set *replies = NULL;
659         _cleanup_strv_free_ char **machines = NULL;
660         int r;
661
662         pager_open_if_enabled();
663
664         r = get_unit_list_recursive(bus, strv_skip_first(args), &unit_infos, &replies, &machines);
665         if (r < 0)
666                 return r;
667
668         qsort_safe(unit_infos, r, sizeof(UnitInfo), compare_unit_info);
669         return output_units_list(unit_infos, r);
670 }
671
672 static int get_triggered_units(
673                 sd_bus *bus,
674                 const char* path,
675                 char*** ret) {
676
677         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
678         int r;
679
680         r = sd_bus_get_property_strv(
681                         bus,
682                         "org.freedesktop.systemd1",
683                         path,
684                         "org.freedesktop.systemd1.Unit",
685                         "Triggers",
686                         &error,
687                         ret);
688
689         if (r < 0)
690                 log_error("Failed to determine triggers: %s", bus_error_message(&error, r));
691
692         return 0;
693 }
694
695 static int get_listening(
696                 sd_bus *bus,
697                 const char* unit_path,
698                 char*** listening) {
699
700         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
701         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
702         const char *type, *path;
703         int r, n = 0;
704
705         r = sd_bus_get_property(
706                         bus,
707                         "org.freedesktop.systemd1",
708                         unit_path,
709                         "org.freedesktop.systemd1.Socket",
710                         "Listen",
711                         &error,
712                         &reply,
713                         "a(ss)");
714         if (r < 0) {
715                 log_error("Failed to get list of listening sockets: %s", bus_error_message(&error, r));
716                 return r;
717         }
718
719         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ss)");
720         if (r < 0)
721                 return bus_log_parse_error(r);
722
723         while ((r = sd_bus_message_read(reply, "(ss)", &type, &path)) > 0) {
724
725                 r = strv_extend(listening, type);
726                 if (r < 0)
727                         return log_oom();
728
729                 r = strv_extend(listening, path);
730                 if (r < 0)
731                         return log_oom();
732
733                 n++;
734         }
735         if (r < 0)
736                 return bus_log_parse_error(r);
737
738         r = sd_bus_message_exit_container(reply);
739         if (r < 0)
740                 return bus_log_parse_error(r);
741
742         return n;
743 }
744
745 struct socket_info {
746         const char *machine;
747         const char* id;
748
749         char* type;
750         char* path;
751
752         /* Note: triggered is a list here, although it almost certainly
753          * will always be one unit. Nevertheless, dbus API allows for multiple
754          * values, so let's follow that.*/
755         char** triggered;
756
757         /* The strv above is shared. free is set only in the first one. */
758         bool own_triggered;
759 };
760
761 static int socket_info_compare(const struct socket_info *a, const struct socket_info *b) {
762         int o;
763
764         assert(a);
765         assert(b);
766
767         if (!a->machine && b->machine)
768                 return -1;
769         if (a->machine && !b->machine)
770                 return 1;
771         if (a->machine && b->machine) {
772                 o = strcasecmp(a->machine, b->machine);
773                 if (o != 0)
774                         return o;
775         }
776
777         o = strcmp(a->path, b->path);
778         if (o == 0)
779                 o = strcmp(a->type, b->type);
780
781         return o;
782 }
783
784 static int output_sockets_list(struct socket_info *socket_infos, unsigned cs) {
785         struct socket_info *s;
786         unsigned pathlen = strlen("LISTEN"),
787                 typelen = strlen("TYPE") * arg_show_types,
788                 socklen = strlen("UNIT"),
789                 servlen = strlen("ACTIVATES");
790         const char *on, *off;
791
792         for (s = socket_infos; s < socket_infos + cs; s++) {
793                 unsigned tmp = 0;
794                 char **a;
795
796                 socklen = MAX(socklen, strlen(s->id));
797                 if (arg_show_types)
798                         typelen = MAX(typelen, strlen(s->type));
799                 pathlen = MAX(pathlen, strlen(s->path) + (s->machine ? strlen(s->machine)+1 : 0));
800
801                 STRV_FOREACH(a, s->triggered)
802                         tmp += strlen(*a) + 2*(a != s->triggered);
803                 servlen = MAX(servlen, tmp);
804         }
805
806         if (cs) {
807                 if (!arg_no_legend)
808                         printf("%-*s %-*.*s%-*s %s\n",
809                                pathlen, "LISTEN",
810                                typelen + arg_show_types, typelen + arg_show_types, "TYPE ",
811                                socklen, "UNIT",
812                                "ACTIVATES");
813
814                 for (s = socket_infos; s < socket_infos + cs; s++) {
815                         _cleanup_free_ char *j = NULL;
816                         const char *path;
817                         char **a;
818
819                         if (s->machine) {
820                                 j = strjoin(s->machine, ":", s->path, NULL);
821                                 if (!j)
822                                         return log_oom();
823                                 path = j;
824                         } else
825                                 path = s->path;
826
827                         if (arg_show_types)
828                                 printf("%-*s %-*s %-*s",
829                                        pathlen, path, typelen, s->type, socklen, s->id);
830                         else
831                                 printf("%-*s %-*s",
832                                        pathlen, path, socklen, s->id);
833                         STRV_FOREACH(a, s->triggered)
834                                 printf("%s %s",
835                                        a == s->triggered ? "" : ",", *a);
836                         printf("\n");
837                 }
838
839                 on = ansi_highlight();
840                 off = ansi_highlight_off();
841                 if (!arg_no_legend)
842                         printf("\n");
843         } else {
844                 on = ansi_highlight_red();
845                 off = ansi_highlight_off();
846         }
847
848         if (!arg_no_legend) {
849                 printf("%s%u sockets listed.%s\n", on, cs, off);
850                 if (!arg_all)
851                         printf("Pass --all to see loaded but inactive sockets, too.\n");
852         }
853
854         return 0;
855 }
856
857 static int list_sockets(sd_bus *bus, char **args) {
858         _cleanup_(message_set_freep) Set *replies = NULL;
859         _cleanup_strv_free_ char **machines = NULL;
860         _cleanup_free_ UnitInfo *unit_infos = NULL;
861         _cleanup_free_ struct socket_info *socket_infos = NULL;
862         const UnitInfo *u;
863         struct socket_info *s;
864         unsigned cs = 0;
865         size_t size = 0;
866         int r = 0, n;
867
868         pager_open_if_enabled();
869
870         n = get_unit_list_recursive(bus, strv_skip_first(args), &unit_infos, &replies, &machines);
871         if (n < 0)
872                 return n;
873
874         for (u = unit_infos; u < unit_infos + n; u++) {
875                 _cleanup_strv_free_ char **listening = NULL, **triggered = NULL;
876                 int i, c;
877
878                 if (!endswith(u->id, ".socket"))
879                         continue;
880
881                 r = get_triggered_units(bus, u->unit_path, &triggered);
882                 if (r < 0)
883                         goto cleanup;
884
885                 c = get_listening(bus, u->unit_path, &listening);
886                 if (c < 0) {
887                         r = c;
888                         goto cleanup;
889                 }
890
891                 if (!GREEDY_REALLOC(socket_infos, size, cs + c)) {
892                         r = log_oom();
893                         goto cleanup;
894                 }
895
896                 for (i = 0; i < c; i++)
897                         socket_infos[cs + i] = (struct socket_info) {
898                                 .machine = u->machine,
899                                 .id = u->id,
900                                 .type = listening[i*2],
901                                 .path = listening[i*2 + 1],
902                                 .triggered = triggered,
903                                 .own_triggered = i==0,
904                         };
905
906                 /* from this point on we will cleanup those socket_infos */
907                 cs += c;
908                 free(listening);
909                 listening = triggered = NULL; /* avoid cleanup */
910         }
911
912         qsort_safe(socket_infos, cs, sizeof(struct socket_info),
913                    (__compar_fn_t) socket_info_compare);
914
915         output_sockets_list(socket_infos, cs);
916
917  cleanup:
918         assert(cs == 0 || socket_infos);
919         for (s = socket_infos; s < socket_infos + cs; s++) {
920                 free(s->type);
921                 free(s->path);
922                 if (s->own_triggered)
923                         strv_free(s->triggered);
924         }
925
926         return r;
927 }
928
929 static int get_next_elapse(
930                 sd_bus *bus,
931                 const char *path,
932                 dual_timestamp *next) {
933
934         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
935         dual_timestamp t;
936         int r;
937
938         assert(bus);
939         assert(path);
940         assert(next);
941
942         r = sd_bus_get_property_trivial(
943                         bus,
944                         "org.freedesktop.systemd1",
945                         path,
946                         "org.freedesktop.systemd1.Timer",
947                         "NextElapseUSecMonotonic",
948                         &error,
949                         't',
950                         &t.monotonic);
951         if (r < 0) {
952                 log_error("Failed to get next elapsation time: %s", bus_error_message(&error, r));
953                 return r;
954         }
955
956         r = sd_bus_get_property_trivial(
957                         bus,
958                         "org.freedesktop.systemd1",
959                         path,
960                         "org.freedesktop.systemd1.Timer",
961                         "NextElapseUSecRealtime",
962                         &error,
963                         't',
964                         &t.realtime);
965         if (r < 0) {
966                 log_error("Failed to get next elapsation time: %s", bus_error_message(&error, r));
967                 return r;
968         }
969
970         *next = t;
971         return 0;
972 }
973
974 static int get_last_trigger(
975                 sd_bus *bus,
976                 const char *path,
977                 usec_t *last) {
978
979         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
980         int r;
981
982         assert(bus);
983         assert(path);
984         assert(last);
985
986         r = sd_bus_get_property_trivial(
987                         bus,
988                         "org.freedesktop.systemd1",
989                         path,
990                         "org.freedesktop.systemd1.Timer",
991                         "LastTriggerUSec",
992                         &error,
993                         't',
994                         last);
995         if (r < 0) {
996                 log_error("Failed to get last trigger time: %s", bus_error_message(&error, r));
997                 return r;
998         }
999
1000         return 0;
1001 }
1002
1003 struct timer_info {
1004         const char* machine;
1005         const char* id;
1006         usec_t next_elapse;
1007         usec_t last_trigger;
1008         char** triggered;
1009 };
1010
1011 static int timer_info_compare(const struct timer_info *a, const struct timer_info *b) {
1012         int o;
1013
1014         assert(a);
1015         assert(b);
1016
1017         if (!a->machine && b->machine)
1018                 return -1;
1019         if (a->machine && !b->machine)
1020                 return 1;
1021         if (a->machine && b->machine) {
1022                 o = strcasecmp(a->machine, b->machine);
1023                 if (o != 0)
1024                         return o;
1025         }
1026
1027         if (a->next_elapse < b->next_elapse)
1028                 return -1;
1029         if (a->next_elapse > b->next_elapse)
1030                 return 1;
1031
1032         return strcmp(a->id, b->id);
1033 }
1034
1035 static int output_timers_list(struct timer_info *timer_infos, unsigned n) {
1036         struct timer_info *t;
1037         unsigned
1038                 nextlen = strlen("NEXT"),
1039                 leftlen = strlen("LEFT"),
1040                 lastlen = strlen("LAST"),
1041                 passedlen = strlen("PASSED"),
1042                 unitlen = strlen("UNIT"),
1043                 activatelen = strlen("ACTIVATES");
1044
1045         const char *on, *off;
1046
1047         assert(timer_infos || n == 0);
1048
1049         for (t = timer_infos; t < timer_infos + n; t++) {
1050                 unsigned ul = 0;
1051                 char **a;
1052
1053                 if (t->next_elapse > 0) {
1054                         char tstamp[FORMAT_TIMESTAMP_MAX] = "", trel[FORMAT_TIMESTAMP_RELATIVE_MAX] = "";
1055
1056                         format_timestamp(tstamp, sizeof(tstamp), t->next_elapse);
1057                         nextlen = MAX(nextlen, strlen(tstamp) + 1);
1058
1059                         format_timestamp_relative(trel, sizeof(trel), t->next_elapse);
1060                         leftlen = MAX(leftlen, strlen(trel));
1061                 }
1062
1063                 if (t->last_trigger > 0) {
1064                         char tstamp[FORMAT_TIMESTAMP_MAX] = "", trel[FORMAT_TIMESTAMP_RELATIVE_MAX] = "";
1065
1066                         format_timestamp(tstamp, sizeof(tstamp), t->last_trigger);
1067                         lastlen = MAX(lastlen, strlen(tstamp) + 1);
1068
1069                         format_timestamp_relative(trel, sizeof(trel), t->last_trigger);
1070                         passedlen = MAX(passedlen, strlen(trel));
1071                 }
1072
1073                 unitlen = MAX(unitlen, strlen(t->id) + (t->machine ? strlen(t->machine)+1 : 0));
1074
1075                 STRV_FOREACH(a, t->triggered)
1076                         ul += strlen(*a) + 2*(a != t->triggered);
1077
1078                 activatelen = MAX(activatelen, ul);
1079         }
1080
1081         if (n > 0) {
1082                 if (!arg_no_legend)
1083                         printf("%-*s %-*s %-*s %-*s %-*s %s\n",
1084                                nextlen,   "NEXT",
1085                                leftlen,   "LEFT",
1086                                lastlen,   "LAST",
1087                                passedlen, "PASSED",
1088                                unitlen,   "UNIT",
1089                                           "ACTIVATES");
1090
1091                 for (t = timer_infos; t < timer_infos + n; t++) {
1092                         _cleanup_free_ char *j = NULL;
1093                         const char *unit;
1094                         char tstamp1[FORMAT_TIMESTAMP_MAX] = "n/a", trel1[FORMAT_TIMESTAMP_RELATIVE_MAX] = "n/a";
1095                         char tstamp2[FORMAT_TIMESTAMP_MAX] = "n/a", trel2[FORMAT_TIMESTAMP_RELATIVE_MAX] = "n/a";
1096                         char **a;
1097
1098                         format_timestamp(tstamp1, sizeof(tstamp1), t->next_elapse);
1099                         format_timestamp_relative(trel1, sizeof(trel1), t->next_elapse);
1100
1101                         format_timestamp(tstamp2, sizeof(tstamp2), t->last_trigger);
1102                         format_timestamp_relative(trel2, sizeof(trel2), t->last_trigger);
1103
1104                         if (t->machine) {
1105                                 j = strjoin(t->machine, ":", t->id, NULL);
1106                                 if (!j)
1107                                         return log_oom();
1108                                 unit = j;
1109                         } else
1110                                 unit = t->id;
1111
1112                         printf("%-*s %-*s %-*s %-*s %-*s",
1113                                nextlen, tstamp1, leftlen, trel1, lastlen, tstamp2, passedlen, trel2, unitlen, unit);
1114
1115                         STRV_FOREACH(a, t->triggered)
1116                                 printf("%s %s",
1117                                        a == t->triggered ? "" : ",", *a);
1118                         printf("\n");
1119                 }
1120
1121                 on = ansi_highlight();
1122                 off = ansi_highlight_off();
1123                 if (!arg_no_legend)
1124                         printf("\n");
1125         } else {
1126                 on = ansi_highlight_red();
1127                 off = ansi_highlight_off();
1128         }
1129
1130         if (!arg_no_legend) {
1131                 printf("%s%u timers listed.%s\n", on, n, off);
1132                 if (!arg_all)
1133                         printf("Pass --all to see loaded but inactive timers, too.\n");
1134         }
1135
1136         return 0;
1137 }
1138
1139 static usec_t calc_next_elapse(dual_timestamp *nw, dual_timestamp *next) {
1140         usec_t next_elapse;
1141
1142         assert(nw);
1143         assert(next);
1144
1145         if (next->monotonic != USEC_INFINITY && next->monotonic > 0) {
1146                 usec_t converted;
1147
1148                 if (next->monotonic > nw->monotonic)
1149                         converted = nw->realtime + (next->monotonic - nw->monotonic);
1150                 else
1151                         converted = nw->realtime - (nw->monotonic - next->monotonic);
1152
1153                 if (next->realtime != USEC_INFINITY && next->realtime > 0)
1154                         next_elapse = MIN(converted, next->realtime);
1155                 else
1156                         next_elapse = converted;
1157
1158         } else
1159                 next_elapse = next->realtime;
1160
1161         return next_elapse;
1162 }
1163
1164 static int list_timers(sd_bus *bus, char **args) {
1165         _cleanup_(message_set_freep) Set *replies = NULL;
1166         _cleanup_strv_free_ char **machines = NULL;
1167         _cleanup_free_ struct timer_info *timer_infos = NULL;
1168         _cleanup_free_ UnitInfo *unit_infos = NULL;
1169         struct timer_info *t;
1170         const UnitInfo *u;
1171         size_t size = 0;
1172         int n, c = 0;
1173         dual_timestamp nw;
1174         int r = 0;
1175
1176         pager_open_if_enabled();
1177
1178         n = get_unit_list_recursive(bus, strv_skip_first(args), &unit_infos, &replies, &machines);
1179         if (n < 0)
1180                 return n;
1181
1182         dual_timestamp_get(&nw);
1183
1184         for (u = unit_infos; u < unit_infos + n; u++) {
1185                 _cleanup_strv_free_ char **triggered = NULL;
1186                 dual_timestamp next = {};
1187                 usec_t m, last = 0;
1188
1189                 if (!endswith(u->id, ".timer"))
1190                         continue;
1191
1192                 r = get_triggered_units(bus, u->unit_path, &triggered);
1193                 if (r < 0)
1194                         goto cleanup;
1195
1196                 r = get_next_elapse(bus, u->unit_path, &next);
1197                 if (r < 0)
1198                         goto cleanup;
1199
1200                 get_last_trigger(bus, u->unit_path, &last);
1201
1202                 if (!GREEDY_REALLOC(timer_infos, size, c+1)) {
1203                         r = log_oom();
1204                         goto cleanup;
1205                 }
1206
1207                 m = calc_next_elapse(&nw, &next);
1208
1209                 timer_infos[c++] = (struct timer_info) {
1210                         .machine = u->machine,
1211                         .id = u->id,
1212                         .next_elapse = m,
1213                         .last_trigger = last,
1214                         .triggered = triggered,
1215                 };
1216
1217                 triggered = NULL; /* avoid cleanup */
1218         }
1219
1220         qsort_safe(timer_infos, c, sizeof(struct timer_info),
1221                    (__compar_fn_t) timer_info_compare);
1222
1223         output_timers_list(timer_infos, c);
1224
1225  cleanup:
1226         for (t = timer_infos; t < timer_infos + c; t++)
1227                 strv_free(t->triggered);
1228
1229         return r;
1230 }
1231
1232 static int compare_unit_file_list(const void *a, const void *b) {
1233         const char *d1, *d2;
1234         const UnitFileList *u = a, *v = b;
1235
1236         d1 = strrchr(u->path, '.');
1237         d2 = strrchr(v->path, '.');
1238
1239         if (d1 && d2) {
1240                 int r;
1241
1242                 r = strcasecmp(d1, d2);
1243                 if (r != 0)
1244                         return r;
1245         }
1246
1247         return strcasecmp(basename(u->path), basename(v->path));
1248 }
1249
1250 static bool output_show_unit_file(const UnitFileList *u, char **patterns) {
1251         const char *dot;
1252
1253         if (!strv_isempty(patterns)) {
1254                 char **pattern;
1255
1256                 STRV_FOREACH(pattern, patterns)
1257                         if (fnmatch(*pattern, basename(u->path), FNM_NOESCAPE) == 0)
1258                                 return true;
1259                 return false;
1260         }
1261
1262         return !arg_types || ((dot = strrchr(u->path, '.')) && strv_find(arg_types, dot+1));
1263 }
1264
1265 static void output_unit_file_list(const UnitFileList *units, unsigned c) {
1266         unsigned max_id_len, id_cols, state_cols;
1267         const UnitFileList *u;
1268
1269         max_id_len = strlen("UNIT FILE");
1270         state_cols = strlen("STATE");
1271
1272         for (u = units; u < units + c; u++) {
1273                 max_id_len = MAX(max_id_len, strlen(basename(u->path)));
1274                 state_cols = MAX(state_cols, strlen(unit_file_state_to_string(u->state)));
1275         }
1276
1277         if (!arg_full) {
1278                 unsigned basic_cols;
1279
1280                 id_cols = MIN(max_id_len, 25u);
1281                 basic_cols = 1 + id_cols + state_cols;
1282                 if (basic_cols < (unsigned) columns())
1283                         id_cols += MIN(columns() - basic_cols, max_id_len - id_cols);
1284         } else
1285                 id_cols = max_id_len;
1286
1287         if (!arg_no_legend)
1288                 printf("%-*s %-*s\n",
1289                        id_cols, "UNIT FILE",
1290                        state_cols, "STATE");
1291
1292         for (u = units; u < units + c; u++) {
1293                 _cleanup_free_ char *e = NULL;
1294                 const char *on, *off;
1295                 const char *id;
1296
1297                 if (u->state == UNIT_FILE_MASKED ||
1298                     u->state == UNIT_FILE_MASKED_RUNTIME ||
1299                     u->state == UNIT_FILE_DISABLED ||
1300                     u->state == UNIT_FILE_INVALID) {
1301                         on  = ansi_highlight_red();
1302                         off = ansi_highlight_off();
1303                 } else if (u->state == UNIT_FILE_ENABLED) {
1304                         on  = ansi_highlight_green();
1305                         off = ansi_highlight_off();
1306                 } else
1307                         on = off = "";
1308
1309                 id = basename(u->path);
1310
1311                 e = arg_full ? NULL : ellipsize(id, id_cols, 33);
1312
1313                 printf("%-*s %s%-*s%s\n",
1314                        id_cols, e ? e : id,
1315                        on, state_cols, unit_file_state_to_string(u->state), off);
1316         }
1317
1318         if (!arg_no_legend)
1319                 printf("\n%u unit files listed.\n", c);
1320 }
1321
1322 static int list_unit_files(sd_bus *bus, char **args) {
1323         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1324         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1325         _cleanup_free_ UnitFileList *units = NULL;
1326         UnitFileList *unit;
1327         size_t size = 0;
1328         unsigned c = 0;
1329         const char *state;
1330         char *path;
1331         int r;
1332
1333         pager_open_if_enabled();
1334
1335         if (avoid_bus()) {
1336                 Hashmap *h;
1337                 UnitFileList *u;
1338                 Iterator i;
1339                 unsigned n_units;
1340
1341                 h = hashmap_new(string_hash_func, string_compare_func);
1342                 if (!h)
1343                         return log_oom();
1344
1345                 r = unit_file_get_list(arg_scope, arg_root, h);
1346                 if (r < 0) {
1347                         unit_file_list_free(h);
1348                         log_error("Failed to get unit file list: %s", strerror(-r));
1349                         return r;
1350                 }
1351
1352                 n_units = hashmap_size(h);
1353                 units = new(UnitFileList, n_units);
1354                 if (!units) {
1355                         unit_file_list_free(h);
1356                         return log_oom();
1357                 }
1358
1359                 HASHMAP_FOREACH(u, h, i) {
1360                         if (!output_show_unit_file(u, strv_skip_first(args)))
1361                                 continue;
1362
1363                         units[c++] = *u;
1364                         free(u);
1365                 }
1366
1367                 assert(c <= n_units);
1368                 hashmap_free(h);
1369         } else {
1370                 r = sd_bus_call_method(
1371                                 bus,
1372                                 "org.freedesktop.systemd1",
1373                                 "/org/freedesktop/systemd1",
1374                                 "org.freedesktop.systemd1.Manager",
1375                                 "ListUnitFiles",
1376                                 &error,
1377                                 &reply,
1378                                 NULL);
1379                 if (r < 0) {
1380                         log_error("Failed to list unit files: %s", bus_error_message(&error, r));
1381                         return r;
1382                 }
1383
1384                 r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ss)");
1385                 if (r < 0)
1386                         return bus_log_parse_error(r);
1387
1388                 while ((r = sd_bus_message_read(reply, "(ss)", &path, &state)) > 0) {
1389
1390                         if (!GREEDY_REALLOC(units, size, c + 1))
1391                                 return log_oom();
1392
1393                         units[c] = (struct UnitFileList) {
1394                                 path,
1395                                 unit_file_state_from_string(state)
1396                         };
1397
1398                         if (output_show_unit_file(&units[c], strv_skip_first(args)))
1399                                 c ++;
1400
1401                 }
1402                 if (r < 0)
1403                         return bus_log_parse_error(r);
1404
1405                 r = sd_bus_message_exit_container(reply);
1406                 if (r < 0)
1407                         return bus_log_parse_error(r);
1408         }
1409
1410         if (c > 0) {
1411                 qsort(units, c, sizeof(UnitFileList), compare_unit_file_list);
1412                 output_unit_file_list(units, c);
1413         }
1414
1415         if (avoid_bus())
1416                 for (unit = units; unit < units + c; unit++)
1417                         free(unit->path);
1418
1419         return 0;
1420 }
1421
1422 static int list_dependencies_print(const char *name, int level, unsigned int branches, bool last) {
1423         _cleanup_free_ char *n = NULL;
1424         size_t max_len = MAX(columns(),20u);
1425         size_t len = 0;
1426         int i;
1427
1428         if (!arg_plain) {
1429
1430                 for (i = level - 1; i >= 0; i--) {
1431                         len += 2;
1432                         if (len > max_len - 3 && !arg_full) {
1433                                 printf("%s...\n",max_len % 2 ? "" : " ");
1434                                 return 0;
1435                         }
1436                         printf("%s", draw_special_char(branches & (1 << i) ? DRAW_TREE_VERTICAL : DRAW_TREE_SPACE));
1437                 }
1438                 len += 2;
1439
1440                 if (len > max_len - 3 && !arg_full) {
1441                         printf("%s...\n",max_len % 2 ? "" : " ");
1442                         return 0;
1443                 }
1444
1445                 printf("%s", draw_special_char(last ? DRAW_TREE_RIGHT : DRAW_TREE_BRANCH));
1446         }
1447
1448         if (arg_full){
1449                 printf("%s\n", name);
1450                 return 0;
1451         }
1452
1453         n = ellipsize(name, max_len-len, 100);
1454         if (!n)
1455                 return log_oom();
1456
1457         printf("%s\n", n);
1458         return 0;
1459 }
1460
1461 static int list_dependencies_get_dependencies(sd_bus *bus, const char *name, char ***deps) {
1462
1463         static const char *dependencies[_DEPENDENCY_MAX] = {
1464                 [DEPENDENCY_FORWARD] = "Requires\0"
1465                                        "RequiresOverridable\0"
1466                                        "Requisite\0"
1467                                        "RequisiteOverridable\0"
1468                                        "Wants\0",
1469                 [DEPENDENCY_REVERSE] = "RequiredBy\0"
1470                                        "RequiredByOverridable\0"
1471                                        "WantedBy\0"
1472                                        "PartOf\0",
1473                 [DEPENDENCY_AFTER]   = "After\0",
1474                 [DEPENDENCY_BEFORE]  = "Before\0",
1475         };
1476
1477         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1478         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1479         _cleanup_strv_free_ char **ret = NULL;
1480         _cleanup_free_ char *path = NULL;
1481         int r;
1482
1483         assert(bus);
1484         assert(name);
1485         assert(deps);
1486         assert_cc(ELEMENTSOF(dependencies) == _DEPENDENCY_MAX);
1487
1488         path = unit_dbus_path_from_name(name);
1489         if (!path)
1490                 return log_oom();
1491
1492         r = sd_bus_call_method(
1493                         bus,
1494                         "org.freedesktop.systemd1",
1495                         path,
1496                         "org.freedesktop.DBus.Properties",
1497                         "GetAll",
1498                         &error,
1499                         &reply,
1500                         "s", "org.freedesktop.systemd1.Unit");
1501         if (r < 0) {
1502                 log_error("Failed to get properties of %s: %s", name, bus_error_message(&error, r));
1503                 return r;
1504         }
1505
1506         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "{sv}");
1507         if (r < 0)
1508                 return bus_log_parse_error(r);
1509
1510         while ((r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) {
1511                 const char *prop;
1512
1513                 r = sd_bus_message_read(reply, "s", &prop);
1514                 if (r < 0)
1515                         return bus_log_parse_error(r);
1516
1517                 if (!nulstr_contains(dependencies[arg_dependency], prop)) {
1518                         r = sd_bus_message_skip(reply, "v");
1519                         if (r < 0)
1520                                 return bus_log_parse_error(r);
1521                 } else {
1522
1523                         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_VARIANT, "as");
1524                         if (r < 0)
1525                                 return bus_log_parse_error(r);
1526
1527                         r = bus_message_read_strv_extend(reply, &ret);
1528                         if (r < 0)
1529                                 return bus_log_parse_error(r);
1530
1531                         r = sd_bus_message_exit_container(reply);
1532                         if (r < 0)
1533                                 return bus_log_parse_error(r);
1534                 }
1535
1536                 r = sd_bus_message_exit_container(reply);
1537                 if (r < 0)
1538                         return bus_log_parse_error(r);
1539
1540         }
1541         if (r < 0)
1542                 return bus_log_parse_error(r);
1543
1544         r = sd_bus_message_exit_container(reply);
1545         if (r < 0)
1546                 return bus_log_parse_error(r);
1547
1548         *deps = ret;
1549         ret = NULL;
1550
1551         return 0;
1552 }
1553
1554 static int list_dependencies_compare(const void *_a, const void *_b) {
1555         const char **a = (const char**) _a, **b = (const char**) _b;
1556
1557         if (unit_name_to_type(*a) == UNIT_TARGET && unit_name_to_type(*b) != UNIT_TARGET)
1558                 return 1;
1559         if (unit_name_to_type(*a) != UNIT_TARGET && unit_name_to_type(*b) == UNIT_TARGET)
1560                 return -1;
1561
1562         return strcasecmp(*a, *b);
1563 }
1564
1565 static int list_dependencies_one(
1566                 sd_bus *bus,
1567                 const char *name,
1568                 int level,
1569                 char ***units,
1570                 unsigned int branches) {
1571
1572         _cleanup_strv_free_ char **deps = NULL;
1573         char **c;
1574         int r = 0;
1575
1576         assert(bus);
1577         assert(name);
1578         assert(units);
1579
1580         r = strv_extend(units, name);
1581         if (r < 0)
1582                 return log_oom();
1583
1584         r = list_dependencies_get_dependencies(bus, name, &deps);
1585         if (r < 0)
1586                 return r;
1587
1588         qsort_safe(deps, strv_length(deps), sizeof (char*), list_dependencies_compare);
1589
1590         STRV_FOREACH(c, deps) {
1591                 int state;
1592
1593                 if (strv_contains(*units, *c)) {
1594                         if (!arg_plain) {
1595                                 r = list_dependencies_print("...", level + 1, (branches << 1) | (c[1] == NULL ? 0 : 1), 1);
1596                                 if (r < 0)
1597                                         return r;
1598                         }
1599                         continue;
1600                 }
1601
1602                 state = check_one_unit(bus, *c, "activating\0active\0reloading\0", true);
1603                 if (state > 0)
1604                         printf("%s%s%s ", ansi_highlight_green(), draw_special_char(DRAW_BLACK_CIRCLE), ansi_highlight_off());
1605                 else
1606                         printf("%s%s%s ", ansi_highlight_red(), draw_special_char(DRAW_BLACK_CIRCLE), ansi_highlight_off());
1607
1608                 r = list_dependencies_print(*c, level, branches, c[1] == NULL);
1609                 if (r < 0)
1610                         return r;
1611
1612                 if (arg_all || unit_name_to_type(*c) == UNIT_TARGET) {
1613                        r = list_dependencies_one(bus, *c, level + 1, units, (branches << 1) | (c[1] == NULL ? 0 : 1));
1614                        if (r < 0)
1615                                return r;
1616                 }
1617         }
1618
1619         if (!arg_plain)
1620                 strv_remove(*units, name);
1621
1622         return 0;
1623 }
1624
1625 static int list_dependencies(sd_bus *bus, char **args) {
1626         _cleanup_strv_free_ char **units = NULL;
1627         _cleanup_free_ char *unit = NULL;
1628         const char *u;
1629
1630         assert(bus);
1631
1632         if (args[1]) {
1633                 unit = unit_name_mangle(args[1], MANGLE_NOGLOB);
1634                 if (!unit)
1635                         return log_oom();
1636                 u = unit;
1637         } else
1638                 u = SPECIAL_DEFAULT_TARGET;
1639
1640         pager_open_if_enabled();
1641
1642         puts(u);
1643
1644         return list_dependencies_one(bus, u, 0, &units, 0);
1645 }
1646
1647 struct machine_info {
1648         bool is_host;
1649         char *name;
1650         char *state;
1651         char *control_group;
1652         uint32_t n_failed_units;
1653         uint32_t n_jobs;
1654         usec_t timestamp;
1655 };
1656
1657 static const struct bus_properties_map machine_info_property_map[] = {
1658         { "SystemState",        "s", NULL, offsetof(struct machine_info, state)          },
1659         { "NJobs",              "u", NULL, offsetof(struct machine_info, n_jobs)         },
1660         { "NFailedUnits",       "u", NULL, offsetof(struct machine_info, n_failed_units) },
1661         { "ControlGroup",       "s", NULL, offsetof(struct machine_info, control_group)  },
1662         { "UserspaceTimestamp", "t", NULL, offsetof(struct machine_info, timestamp)      },
1663         {}
1664 };
1665
1666 static void free_machines_list(struct machine_info *machine_infos, int n) {
1667         int i;
1668
1669         if (!machine_infos)
1670                 return;
1671
1672         for (i = 0; i < n; i++) {
1673                 free(machine_infos[i].name);
1674                 free(machine_infos[i].state);
1675                 free(machine_infos[i].control_group);
1676         }
1677
1678         free(machine_infos);
1679 }
1680
1681 static int compare_machine_info(const void *a, const void *b) {
1682         const struct machine_info *u = a, *v = b;
1683
1684         if (u->is_host != v->is_host)
1685                 return u->is_host > v->is_host ? -1 : 1;
1686
1687         return strcasecmp(u->name, v->name);
1688 }
1689
1690 static int get_machine_properties(sd_bus *bus, struct machine_info *mi) {
1691         _cleanup_bus_unref_ sd_bus *container = NULL;
1692         int r;
1693
1694         assert(mi);
1695
1696         if (!bus) {
1697                 r = sd_bus_open_system_container(&container, mi->name);
1698                 if (r < 0)
1699                         return r;
1700
1701                 bus = container;
1702         }
1703
1704         r = bus_map_all_properties(bus, "org.freedesktop.systemd1", "/org/freedesktop/systemd1", machine_info_property_map, mi);
1705         if (r < 0)
1706                 return r;
1707
1708         return 0;
1709 }
1710
1711 static bool output_show_machine(const char *name, char **patterns) {
1712         char **i;
1713
1714         assert(name);
1715
1716         if (strv_isempty(patterns))
1717                 return true;
1718
1719         STRV_FOREACH(i, patterns)
1720                 if (fnmatch(*i, name, FNM_NOESCAPE) == 0)
1721                         return true;
1722
1723         return false;
1724 }
1725
1726 static int get_machine_list(
1727                 sd_bus *bus,
1728                 struct machine_info **_machine_infos,
1729                 char **patterns) {
1730
1731         struct machine_info *machine_infos = NULL;
1732         _cleanup_strv_free_ char **m = NULL;
1733         _cleanup_free_ char *hn = NULL;
1734         size_t sz = 0;
1735         char **i;
1736         int c = 0;
1737
1738         hn = gethostname_malloc();
1739         if (!hn)
1740                 return log_oom();
1741
1742         if (output_show_machine(hn, patterns)) {
1743                 if (!GREEDY_REALLOC0(machine_infos, sz, c+1))
1744                         return log_oom();
1745
1746                 machine_infos[c].is_host = true;
1747                 machine_infos[c].name = hn;
1748                 hn = NULL;
1749
1750                 get_machine_properties(bus, &machine_infos[c]);
1751                 c++;
1752         }
1753
1754         sd_get_machine_names(&m);
1755         STRV_FOREACH(i, m) {
1756                 _cleanup_free_ char *class = NULL;
1757
1758                 if (!output_show_machine(*i, patterns))
1759                         continue;
1760
1761                 sd_machine_get_class(*i, &class);
1762                 if (!streq_ptr(class, "container"))
1763                         continue;
1764
1765                 if (!GREEDY_REALLOC0(machine_infos, sz, c+1)) {
1766                         free_machines_list(machine_infos, c);
1767                         return log_oom();
1768                 }
1769
1770                 machine_infos[c].is_host = false;
1771                 machine_infos[c].name = strdup(*i);
1772                 if (!machine_infos[c].name) {
1773                         free_machines_list(machine_infos, c);
1774                         return log_oom();
1775                 }
1776
1777                 get_machine_properties(NULL, &machine_infos[c]);
1778                 c++;
1779         }
1780
1781         *_machine_infos = machine_infos;
1782         return c;
1783 }
1784
1785 static void output_machines_list(struct machine_info *machine_infos, unsigned n) {
1786         struct machine_info *m;
1787         unsigned
1788                 circle_len = 0,
1789                 namelen = sizeof("NAME") - 1,
1790                 statelen = sizeof("STATE") - 1,
1791                 failedlen = sizeof("FAILED") - 1,
1792                 jobslen = sizeof("JOBS") - 1;
1793
1794         assert(machine_infos || n == 0);
1795
1796         for (m = machine_infos; m < machine_infos + n; m++) {
1797                 namelen = MAX(namelen, strlen(m->name) + (m->is_host ? sizeof(" (host)") - 1 : 0));
1798                 statelen = MAX(statelen, m->state ? strlen(m->state) : 0);
1799                 failedlen = MAX(failedlen, DECIMAL_STR_WIDTH(m->n_failed_units));
1800                 jobslen = MAX(jobslen, DECIMAL_STR_WIDTH(m->n_jobs));
1801
1802                 if (!arg_no_legend && !streq_ptr(m->state, "running"))
1803                         circle_len = 2;
1804         }
1805
1806         if (!arg_no_legend) {
1807                 if (circle_len > 0)
1808                         fputs("  ", stdout);
1809
1810                 printf("%-*s %-*s %-*s %-*s\n",
1811                          namelen, "NAME",
1812                         statelen, "STATE",
1813                        failedlen, "FAILED",
1814                          jobslen, "JOBS");
1815         }
1816
1817         for (m = machine_infos; m < machine_infos + n; m++) {
1818                 const char *on_state = "", *off_state = "";
1819                 const char *on_failed = "", *off_failed = "";
1820                 bool circle = false;
1821
1822                 if (streq_ptr(m->state, "degraded")) {
1823                         on_state = ansi_highlight_red();
1824                         off_state = ansi_highlight_off();
1825                         circle = true;
1826                 } else if (!streq_ptr(m->state, "running")) {
1827                         on_state = ansi_highlight_yellow();
1828                         off_state = ansi_highlight_off();
1829                         circle = true;
1830                 }
1831
1832                 if (m->n_failed_units > 0) {
1833                         on_failed = ansi_highlight_red();
1834                         off_failed = ansi_highlight_off();
1835                 } else
1836                         on_failed = off_failed = "";
1837
1838                 if (circle_len > 0)
1839                         printf("%s%s%s ", on_state, circle ? draw_special_char(DRAW_BLACK_CIRCLE) : " ", off_state);
1840
1841                 if (m->is_host)
1842                         printf("%-*s (host) %s%-*s%s %s%*u%s %*u\n",
1843                                (int) (namelen - (sizeof(" (host)")-1)), strna(m->name),
1844                                on_state, statelen, strna(m->state), off_state,
1845                                on_failed, failedlen, m->n_failed_units, off_failed,
1846                                jobslen, m->n_jobs);
1847                 else
1848                         printf("%-*s %s%-*s%s %s%*u%s %*u\n",
1849                                namelen, strna(m->name),
1850                                on_state, statelen, strna(m->state), off_state,
1851                                on_failed, failedlen, m->n_failed_units, off_failed,
1852                                jobslen, m->n_jobs);
1853         }
1854
1855         if (!arg_no_legend)
1856                 printf("\n%u machines listed.\n", n);
1857 }
1858
1859 static int list_machines(sd_bus *bus, char **args) {
1860         struct machine_info *machine_infos = NULL;
1861         int r;
1862
1863         assert(bus);
1864
1865         if (geteuid() != 0) {
1866                 log_error("Must be root.");
1867                 return -EPERM;
1868         }
1869
1870         pager_open_if_enabled();
1871
1872         r = get_machine_list(bus, &machine_infos, strv_skip_first(args));
1873         if (r < 0)
1874                 return r;
1875
1876         qsort_safe(machine_infos, r, sizeof(struct machine_info), compare_machine_info);
1877         output_machines_list(machine_infos, r);
1878         free_machines_list(machine_infos, r);
1879
1880         return 0;
1881 }
1882
1883 static int get_default(sd_bus *bus, char **args) {
1884         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1885         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1886         _cleanup_free_ char *_path = NULL;
1887         const char *path;
1888         int r;
1889
1890         if (!bus || avoid_bus()) {
1891                 r = unit_file_get_default(arg_scope, arg_root, &_path);
1892                 if (r < 0) {
1893                         log_error("Failed to get default target: %s", strerror(-r));
1894                         return r;
1895                 }
1896                 path = _path;
1897
1898         } else {
1899                 r = sd_bus_call_method(
1900                                 bus,
1901                                 "org.freedesktop.systemd1",
1902                                 "/org/freedesktop/systemd1",
1903                                 "org.freedesktop.systemd1.Manager",
1904                                 "GetDefaultTarget",
1905                                 &error,
1906                                 &reply,
1907                                 NULL);
1908                 if (r < 0) {
1909                         log_error("Failed to get default target: %s", bus_error_message(&error, -r));
1910                         return r;
1911                 }
1912
1913                 r = sd_bus_message_read(reply, "s", &path);
1914                 if (r < 0)
1915                         return bus_log_parse_error(r);
1916         }
1917
1918         if (path)
1919                 printf("%s\n", path);
1920
1921         return 0;
1922 }
1923
1924 static void dump_unit_file_changes(const UnitFileChange *changes, unsigned n_changes) {
1925         unsigned i;
1926
1927         assert(changes || n_changes == 0);
1928
1929         for (i = 0; i < n_changes; i++) {
1930                 if (changes[i].type == UNIT_FILE_SYMLINK)
1931                         log_info("Created symlink from %s to %s.", changes[i].path, changes[i].source);
1932                 else
1933                         log_info("Removed symlink %s.", changes[i].path);
1934         }
1935 }
1936
1937 static int deserialize_and_dump_unit_file_changes(sd_bus_message *m) {
1938         const char *type, *path, *source;
1939         int r;
1940
1941         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sss)");
1942         if (r < 0)
1943                 return bus_log_parse_error(r);
1944
1945         while ((r = sd_bus_message_read(m, "(sss)", &type, &path, &source)) > 0) {
1946                 if (!arg_quiet) {
1947                         if (streq(type, "symlink"))
1948                                 log_info("Created symlink from %s to %s.", path, source);
1949                         else
1950                                 log_info("Removed symlink %s.", path);
1951                 }
1952         }
1953         if (r < 0)
1954                 return bus_log_parse_error(r);
1955
1956         r = sd_bus_message_exit_container(m);
1957         if (r < 0)
1958                 return bus_log_parse_error(r);
1959
1960         return 0;
1961 }
1962
1963 static int set_default(sd_bus *bus, char **args) {
1964         _cleanup_free_ char *unit = NULL;
1965         UnitFileChange *changes = NULL;
1966         unsigned n_changes = 0;
1967         int r;
1968
1969         unit = unit_name_mangle_with_suffix(args[1], MANGLE_NOGLOB, ".target");
1970         if (!unit)
1971                 return log_oom();
1972
1973         if (!bus || avoid_bus()) {
1974                 r = unit_file_set_default(arg_scope, arg_root, unit, true, &changes, &n_changes);
1975                 if (r < 0) {
1976                         log_error("Failed to set default target: %s", strerror(-r));
1977                         return r;
1978                 }
1979
1980                 if (!arg_quiet)
1981                         dump_unit_file_changes(changes, n_changes);
1982
1983                 r = 0;
1984         } else {
1985                 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1986                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1987
1988                 r = sd_bus_call_method(
1989                                 bus,
1990                                 "org.freedesktop.systemd1",
1991                                 "/org/freedesktop/systemd1",
1992                                 "org.freedesktop.systemd1.Manager",
1993                                 "SetDefaultTarget",
1994                                 &error,
1995                                 &reply,
1996                                 "sb", unit, true);
1997                 if (r < 0) {
1998                         log_error("Failed to set default target: %s", bus_error_message(&error, -r));
1999                         return r;
2000                 }
2001
2002                 r = deserialize_and_dump_unit_file_changes(reply);
2003                 if (r < 0)
2004                         return r;
2005
2006                 /* Try to reload if enabled */
2007                 if (!arg_no_reload)
2008                         r = daemon_reload(bus, args);
2009                 else
2010                         r = 0;
2011         }
2012
2013         unit_file_changes_free(changes, n_changes);
2014
2015         return r;
2016 }
2017
2018 struct job_info {
2019         uint32_t id;
2020         const char *name, *type, *state;
2021 };
2022
2023 static void output_jobs_list(const struct job_info* jobs, unsigned n, bool skipped) {
2024         unsigned id_len, unit_len, type_len, state_len;
2025         const struct job_info *j;
2026         const char *on, *off;
2027         bool shorten = false;
2028
2029         assert(n == 0 || jobs);
2030
2031         if (n == 0) {
2032                 on = ansi_highlight_green();
2033                 off = ansi_highlight_off();
2034
2035                 printf("%sNo jobs %s.%s\n", on, skipped ? "listed" : "running", off);
2036                 return;
2037         }
2038
2039         pager_open_if_enabled();
2040
2041         id_len = strlen("JOB");
2042         unit_len = strlen("UNIT");
2043         type_len = strlen("TYPE");
2044         state_len = strlen("STATE");
2045
2046         for (j = jobs; j < jobs + n; j++) {
2047                 uint32_t id = j->id;
2048                 assert(j->name && j->type && j->state);
2049
2050                 id_len = MAX(id_len, DECIMAL_STR_WIDTH(id));
2051                 unit_len = MAX(unit_len, strlen(j->name));
2052                 type_len = MAX(type_len, strlen(j->type));
2053                 state_len = MAX(state_len, strlen(j->state));
2054         }
2055
2056         if (!arg_full && id_len + 1 + unit_len + type_len + 1 + state_len > columns()) {
2057                 unit_len = MAX(33u, columns() - id_len - type_len - state_len - 3);
2058                 shorten = true;
2059         }
2060
2061         if (!arg_no_legend)
2062                 printf("%*s %-*s %-*s %-*s\n",
2063                        id_len, "JOB",
2064                        unit_len, "UNIT",
2065                        type_len, "TYPE",
2066                        state_len, "STATE");
2067
2068         for (j = jobs; j < jobs + n; j++) {
2069                 _cleanup_free_ char *e = NULL;
2070
2071                 if (streq(j->state, "running")) {
2072                         on = ansi_highlight();
2073                         off = ansi_highlight_off();
2074                 } else
2075                         on = off = "";
2076
2077                 e = shorten ? ellipsize(j->name, unit_len, 33) : NULL;
2078                 printf("%*u %s%-*s%s %-*s %s%-*s%s\n",
2079                        id_len, j->id,
2080                        on, unit_len, e ? e : j->name, off,
2081                        type_len, j->type,
2082                        on, state_len, j->state, off);
2083         }
2084
2085         if (!arg_no_legend) {
2086                 on = ansi_highlight();
2087                 off = ansi_highlight_off();
2088
2089                 printf("\n%s%u jobs listed%s.\n", on, n, off);
2090         }
2091 }
2092
2093 static bool output_show_job(struct job_info *job, char **patterns) {
2094         char **pattern;
2095
2096         assert(job);
2097
2098         if (strv_isempty(patterns))
2099                 return true;
2100
2101         STRV_FOREACH(pattern, patterns)
2102                 if (fnmatch(*pattern, job->name, FNM_NOESCAPE) == 0)
2103                         return true;
2104         return false;
2105 }
2106
2107 static int list_jobs(sd_bus *bus, char **args) {
2108         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2109         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2110         const char *name, *type, *state, *job_path, *unit_path;
2111         _cleanup_free_ struct job_info *jobs = NULL;
2112         size_t size = 0;
2113         unsigned c = 0;
2114         uint32_t id;
2115         int r;
2116         bool skipped = false;
2117
2118         r = sd_bus_call_method(
2119                         bus,
2120                         "org.freedesktop.systemd1",
2121                         "/org/freedesktop/systemd1",
2122                         "org.freedesktop.systemd1.Manager",
2123                         "ListJobs",
2124                         &error,
2125                         &reply,
2126                         NULL);
2127         if (r < 0) {
2128                 log_error("Failed to list jobs: %s", bus_error_message(&error, r));
2129                 return r;
2130         }
2131
2132         r = sd_bus_message_enter_container(reply, 'a', "(usssoo)");
2133         if (r < 0)
2134                 return bus_log_parse_error(r);
2135
2136         while ((r = sd_bus_message_read(reply, "(usssoo)", &id, &name, &type, &state, &job_path, &unit_path)) > 0) {
2137                 struct job_info job = { id, name, type, state };
2138
2139                 if (!output_show_job(&job, strv_skip_first(args))) {
2140                         skipped = true;
2141                         continue;
2142                 }
2143
2144                 if (!GREEDY_REALLOC(jobs, size, c + 1))
2145                         return log_oom();
2146
2147                 jobs[c++] = job;
2148         }
2149         if (r < 0)
2150                 return bus_log_parse_error(r);
2151
2152         r = sd_bus_message_exit_container(reply);
2153         if (r < 0)
2154                 return bus_log_parse_error(r);
2155
2156         output_jobs_list(jobs, c, skipped);
2157         return r;
2158 }
2159
2160 static int cancel_job(sd_bus *bus, char **args) {
2161         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2162         char **name;
2163
2164         assert(args);
2165
2166         if (strv_length(args) <= 1)
2167                 return daemon_reload(bus, args);
2168
2169         STRV_FOREACH(name, args+1) {
2170                 uint32_t id;
2171                 int r;
2172
2173                 r = safe_atou32(*name, &id);
2174                 if (r < 0) {
2175                         log_error("Failed to parse job id \"%s\": %s", *name, strerror(-r));
2176                         return r;
2177                 }
2178
2179                 r = sd_bus_call_method(
2180                                 bus,
2181                                 "org.freedesktop.systemd1",
2182                                 "/org/freedesktop/systemd1",
2183                                 "org.freedesktop.systemd1.Manager",
2184                                 "CancelJob",
2185                                 &error,
2186                                 NULL,
2187                                 "u", id);
2188                 if (r < 0) {
2189                         log_error("Failed to cancel job %u: %s", (unsigned) id, bus_error_message(&error, r));
2190                         return r;
2191                 }
2192         }
2193
2194         return 0;
2195 }
2196
2197 static int need_daemon_reload(sd_bus *bus, const char *unit) {
2198         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2199         const char *path;
2200         int b, r;
2201
2202         /* We ignore all errors here, since this is used to show a
2203          * warning only */
2204
2205         /* We don't use unit_dbus_path_from_name() directly since we
2206          * don't want to load the unit if it isn't loaded. */
2207
2208         r = sd_bus_call_method(
2209                         bus,
2210                         "org.freedesktop.systemd1",
2211                         "/org/freedesktop/systemd1",
2212                         "org.freedesktop.systemd1.Manager",
2213                         "GetUnit",
2214                         NULL,
2215                         &reply,
2216                         "s", unit);
2217         if (r < 0)
2218                 return r;
2219
2220         r = sd_bus_message_read(reply, "o", &path);
2221         if (r < 0)
2222                 return r;
2223
2224         r = sd_bus_get_property_trivial(
2225                         bus,
2226                         "org.freedesktop.systemd1",
2227                         path,
2228                         "org.freedesktop.systemd1.Unit",
2229                         "NeedDaemonReload",
2230                         NULL,
2231                         'b', &b);
2232         if (r < 0)
2233                 return r;
2234
2235         return b;
2236 }
2237
2238 typedef struct WaitData {
2239         Set *set;
2240
2241         char *name;
2242         char *result;
2243 } WaitData;
2244
2245 static int wait_filter(sd_bus *bus, sd_bus_message *m, void *data, sd_bus_error *error) {
2246         WaitData *d = data;
2247
2248         assert(bus);
2249         assert(m);
2250         assert(d);
2251
2252         log_debug("Got D-Bus request: %s.%s() on %s",
2253                   sd_bus_message_get_interface(m),
2254                   sd_bus_message_get_member(m),
2255                   sd_bus_message_get_path(m));
2256
2257         if (sd_bus_message_is_signal(m, "org.freedesktop.DBus.Local", "Disconnected")) {
2258                 log_error("Warning! D-Bus connection terminated.");
2259                 sd_bus_close(bus);
2260         } else if (sd_bus_message_is_signal(m, "org.freedesktop.systemd1.Manager", "JobRemoved")) {
2261                 uint32_t id;
2262                 const char *path, *result, *unit;
2263                 char *ret;
2264                 int r;
2265
2266                 r = sd_bus_message_read(m, "uoss", &id, &path, &unit, &result);
2267                 if (r >= 0) {
2268                         ret = set_remove(d->set, (char*) path);
2269                         if (!ret)
2270                                 return 0;
2271
2272                         free(ret);
2273
2274                         if (!isempty(result))
2275                                 d->result = strdup(result);
2276
2277                         if (!isempty(unit))
2278                                 d->name = strdup(unit);
2279
2280                         return 0;
2281                 }
2282 #ifndef NOLEGACY
2283                 r = sd_bus_message_read(m, "uos", &id, &path, &result);
2284                 if (r >= 0) {
2285                         ret = set_remove(d->set, (char*) path);
2286                         if (!ret)
2287                                 return 0;
2288
2289                         free(ret);
2290
2291                         if (*result)
2292                                 d->result = strdup(result);
2293
2294                         return 0;
2295                 }
2296 #endif
2297
2298                 bus_log_parse_error(r);
2299         }
2300
2301         return 0;
2302 }
2303
2304 static int enable_wait_for_jobs(sd_bus *bus) {
2305         int r;
2306
2307         assert(bus);
2308
2309         r = sd_bus_add_match(
2310                         bus,
2311                         NULL,
2312                         "type='signal',"
2313                         "sender='org.freedesktop.systemd1',"
2314                         "interface='org.freedesktop.systemd1.Manager',"
2315                         "member='JobRemoved',"
2316                         "path='/org/freedesktop/systemd1'",
2317                         NULL, NULL);
2318         if (r < 0) {
2319                 log_error("Failed to add match");
2320                 return -EIO;
2321         }
2322
2323         /* This is slightly dirty, since we don't undo the match registrations. */
2324         return 0;
2325 }
2326
2327 static int bus_process_wait(sd_bus *bus) {
2328         int r;
2329
2330         for (;;) {
2331                 r = sd_bus_process(bus, NULL);
2332                 if (r < 0)
2333                         return r;
2334                 if (r > 0)
2335                         return 0;
2336                 r = sd_bus_wait(bus, (uint64_t) -1);
2337                 if (r < 0)
2338                         return r;
2339         }
2340 }
2341
2342 static int check_wait_response(WaitData *d) {
2343         int r = 0;
2344
2345         assert(d->result);
2346
2347         if (!arg_quiet) {
2348                 if (streq(d->result, "timeout"))
2349                         log_error("Job for %s timed out.", strna(d->name));
2350                 else if (streq(d->result, "canceled"))
2351                         log_error("Job for %s canceled.", strna(d->name));
2352                 else if (streq(d->result, "dependency"))
2353                         log_error("A dependency job for %s failed. See 'journalctl -xn' for details.", strna(d->name));
2354                 else if (!streq(d->result, "done") && !streq(d->result, "skipped"))
2355                         log_error("Job for %s failed. See 'systemctl status %s' and 'journalctl -xn' for details.", strna(d->name), strna(d->name));
2356         }
2357
2358         if (streq(d->result, "timeout"))
2359                 r = -ETIME;
2360         else if (streq(d->result, "canceled"))
2361                 r = -ECANCELED;
2362         else if (streq(d->result, "dependency"))
2363                 r = -EIO;
2364         else if (!streq(d->result, "done") && !streq(d->result, "skipped"))
2365                 r = -EIO;
2366
2367         return r;
2368 }
2369
2370 static int wait_for_jobs(sd_bus *bus, Set *s) {
2371         _cleanup_bus_slot_unref_ sd_bus_slot *slot = NULL;
2372         WaitData d = { .set = s };
2373         int r = 0, q;
2374
2375         assert(bus);
2376         assert(s);
2377
2378         q = sd_bus_add_filter(bus, &slot, wait_filter, &d);
2379         if (q < 0)
2380                 return log_oom();
2381
2382         while (!set_isempty(s)) {
2383                 q = bus_process_wait(bus);
2384                 if (q < 0) {
2385                         log_error("Failed to wait for response: %s", strerror(-r));
2386                         return q;
2387                 }
2388
2389                 if (d.result) {
2390                         q = check_wait_response(&d);
2391                         /* Return the first error as it is most likely to be
2392                          * meaningful. */
2393                         if (q < 0 && r == 0)
2394                                 r = q;
2395                         log_debug("Got result %s/%s for job %s",
2396                                   strna(d.result), strerror(-q), strna(d.name));
2397                 }
2398
2399                 free(d.name);
2400                 d.name = NULL;
2401
2402                 free(d.result);
2403                 d.result = NULL;
2404         }
2405
2406         return r;
2407 }
2408
2409 static int check_one_unit(sd_bus *bus, const char *name, const char *good_states, bool quiet) {
2410         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2411         _cleanup_free_ char *n = NULL, *state = NULL;
2412         const char *path;
2413         int r;
2414
2415         assert(name);
2416
2417         n = unit_name_mangle(name, MANGLE_NOGLOB);
2418         if (!n)
2419                 return log_oom();
2420
2421         /* We don't use unit_dbus_path_from_name() directly since we
2422          * don't want to load the unit if it isn't loaded. */
2423
2424         r = sd_bus_call_method(
2425                         bus,
2426                         "org.freedesktop.systemd1",
2427                         "/org/freedesktop/systemd1",
2428                         "org.freedesktop.systemd1.Manager",
2429                         "GetUnit",
2430                         NULL,
2431                         &reply,
2432                         "s", n);
2433         if (r < 0) {
2434                 if (!quiet)
2435                         puts("unknown");
2436                 return 0;
2437         }
2438
2439         r = sd_bus_message_read(reply, "o", &path);
2440         if (r < 0)
2441                 return bus_log_parse_error(r);
2442
2443         r = sd_bus_get_property_string(
2444                         bus,
2445                         "org.freedesktop.systemd1",
2446                         path,
2447                         "org.freedesktop.systemd1.Unit",
2448                         "ActiveState",
2449                         NULL,
2450                         &state);
2451         if (r < 0) {
2452                 if (!quiet)
2453                         puts("unknown");
2454                 return 0;
2455         }
2456
2457         if (!quiet)
2458                 puts(state);
2459
2460         return nulstr_contains(good_states, state);
2461 }
2462
2463 static int check_triggering_units(
2464                 sd_bus *bus,
2465                 const char *name) {
2466
2467         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2468         _cleanup_free_ char *path = NULL, *n = NULL, *state = NULL;
2469         _cleanup_strv_free_ char **triggered_by = NULL;
2470         bool print_warning_label = true;
2471         char **i;
2472         int r;
2473
2474         n = unit_name_mangle(name, MANGLE_NOGLOB);
2475         if (!n)
2476                 return log_oom();
2477
2478         path = unit_dbus_path_from_name(n);
2479         if (!path)
2480                 return log_oom();
2481
2482         r = sd_bus_get_property_string(
2483                         bus,
2484                         "org.freedesktop.systemd1",
2485                         path,
2486                         "org.freedesktop.systemd1.Unit",
2487                         "LoadState",
2488                         &error,
2489                         &state);
2490         if (r < 0) {
2491                 log_error("Failed to get load state of %s: %s", n, bus_error_message(&error, r));
2492                 return r;
2493         }
2494
2495         if (streq(state, "masked"))
2496                 return 0;
2497
2498         r = sd_bus_get_property_strv(
2499                         bus,
2500                         "org.freedesktop.systemd1",
2501                         path,
2502                         "org.freedesktop.systemd1.Unit",
2503                         "TriggeredBy",
2504                         &error,
2505                         &triggered_by);
2506         if (r < 0) {
2507                 log_error("Failed to get triggered by array of %s: %s", n, bus_error_message(&error, r));
2508                 return r;
2509         }
2510
2511         STRV_FOREACH(i, triggered_by) {
2512                 r = check_one_unit(bus, *i, "active\0reloading\0", true);
2513                 if (r < 0) {
2514                         log_error("Failed to check unit: %s", strerror(-r));
2515                         return r;
2516                 }
2517
2518                 if (r == 0)
2519                         continue;
2520
2521                 if (print_warning_label) {
2522                         log_warning("Warning: Stopping %s, but it can still be activated by:", n);
2523                         print_warning_label = false;
2524                 }
2525
2526                 log_warning("  %s", *i);
2527         }
2528
2529         return 0;
2530 }
2531
2532 static const char *verb_to_method(const char *verb) {
2533        uint i;
2534
2535        for (i = 0; i < ELEMENTSOF(unit_actions); i++)
2536                 if (streq_ptr(unit_actions[i].verb, verb))
2537                         return unit_actions[i].method;
2538
2539        return "StartUnit";
2540 }
2541
2542 static const char *method_to_verb(const char *method) {
2543        uint i;
2544
2545        for (i = 0; i < ELEMENTSOF(unit_actions); i++)
2546                 if (streq_ptr(unit_actions[i].method, method))
2547                         return unit_actions[i].verb;
2548
2549        return "n/a";
2550 }
2551
2552 static int start_unit_one(
2553                 sd_bus *bus,
2554                 const char *method,
2555                 const char *name,
2556                 const char *mode,
2557                 sd_bus_error *error,
2558                 Set *s) {
2559
2560         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2561         const char *path;
2562         int r;
2563
2564         assert(method);
2565         assert(name);
2566         assert(mode);
2567         assert(error);
2568
2569         log_debug("Calling manager for %s on %s, %s", method, name, mode);
2570         r = sd_bus_call_method(
2571                         bus,
2572                         "org.freedesktop.systemd1",
2573                         "/org/freedesktop/systemd1",
2574                         "org.freedesktop.systemd1.Manager",
2575                         method,
2576                         error,
2577                         &reply,
2578                         "ss", name, mode);
2579         if (r < 0) {
2580                 const char *verb;
2581
2582                 if (r == -ENOENT && arg_action != ACTION_SYSTEMCTL)
2583                         /* There's always a fallback possible for
2584                          * legacy actions. */
2585                         return -EADDRNOTAVAIL;
2586
2587                 verb = method_to_verb(method);
2588
2589                 log_error("Failed to %s %s: %s", verb, name, bus_error_message(error, r));
2590                 return r;
2591         }
2592
2593         r = sd_bus_message_read(reply, "o", &path);
2594         if (r < 0)
2595                 return bus_log_parse_error(r);
2596
2597         if (need_daemon_reload(bus, name) > 0)
2598                 log_warning("Warning: Unit file of %s changed on disk, 'systemctl%s daemon-reload' recommended.",
2599                             name, arg_scope == UNIT_FILE_SYSTEM ? "" : " --user");
2600
2601         if (s) {
2602                 char *p;
2603
2604                 p = strdup(path);
2605                 if (!p)
2606                         return log_oom();
2607
2608                 log_debug("Adding %s to the set", p);
2609                 r = set_consume(s, p);
2610                 if (r < 0)
2611                         return log_oom();
2612         }
2613
2614         return 0;
2615 }
2616
2617 static int expand_names(sd_bus *bus, char **names, const char* suffix, char ***ret) {
2618
2619         _cleanup_strv_free_ char **mangled = NULL, **globs = NULL;
2620         char **name;
2621         int r = 0, i;
2622
2623         STRV_FOREACH(name, names) {
2624                 char *t;
2625
2626                 if (suffix)
2627                         t = unit_name_mangle_with_suffix(*name, MANGLE_GLOB, suffix);
2628                 else
2629                         t = unit_name_mangle(*name, MANGLE_GLOB);
2630                 if (!t)
2631                         return log_oom();
2632
2633                 if (string_is_glob(t))
2634                         r = strv_consume(&globs, t);
2635                 else
2636                         r = strv_consume(&mangled, t);
2637                 if (r < 0)
2638                         return log_oom();
2639         }
2640
2641         /* Query the manager only if any of the names are a glob, since
2642          * this is fairly expensive */
2643         if (!strv_isempty(globs)) {
2644                 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2645                 _cleanup_free_ UnitInfo *unit_infos = NULL;
2646
2647                 r = get_unit_list(bus, NULL, globs, &unit_infos, 0, &reply);
2648                 if (r < 0)
2649                         return r;
2650
2651                 for (i = 0; i < r; i++)
2652                         if (strv_extend(&mangled, unit_infos[i].id) < 0)
2653                                 return log_oom();
2654         }
2655
2656         *ret = mangled;
2657         mangled = NULL; /* do not free */
2658
2659         return 0;
2660 }
2661
2662 static const struct {
2663         const char *target;
2664         const char *verb;
2665         const char *mode;
2666 } action_table[_ACTION_MAX] = {
2667         [ACTION_HALT]         = { SPECIAL_HALT_TARGET,         "halt",         "replace-irreversibly" },
2668         [ACTION_POWEROFF]     = { SPECIAL_POWEROFF_TARGET,     "poweroff",     "replace-irreversibly" },
2669         [ACTION_REBOOT]       = { SPECIAL_REBOOT_TARGET,       "reboot",       "replace-irreversibly" },
2670         [ACTION_KEXEC]        = { SPECIAL_KEXEC_TARGET,        "kexec",        "replace-irreversibly" },
2671         [ACTION_RUNLEVEL2]    = { SPECIAL_RUNLEVEL2_TARGET,    NULL,           "isolate" },
2672         [ACTION_RUNLEVEL3]    = { SPECIAL_RUNLEVEL3_TARGET,    NULL,           "isolate" },
2673         [ACTION_RUNLEVEL4]    = { SPECIAL_RUNLEVEL4_TARGET,    NULL,           "isolate" },
2674         [ACTION_RUNLEVEL5]    = { SPECIAL_RUNLEVEL5_TARGET,    NULL,           "isolate" },
2675         [ACTION_RESCUE]       = { SPECIAL_RESCUE_TARGET,       "rescue",       "isolate" },
2676         [ACTION_EMERGENCY]    = { SPECIAL_EMERGENCY_TARGET,    "emergency",    "isolate" },
2677         [ACTION_DEFAULT]      = { SPECIAL_DEFAULT_TARGET,      "default",      "isolate" },
2678         [ACTION_EXIT]         = { SPECIAL_EXIT_TARGET,         "exit",         "replace-irreversibly" },
2679         [ACTION_SUSPEND]      = { SPECIAL_SUSPEND_TARGET,      "suspend",      "replace-irreversibly" },
2680         [ACTION_HIBERNATE]    = { SPECIAL_HIBERNATE_TARGET,    "hibernate",    "replace-irreversibly" },
2681         [ACTION_HYBRID_SLEEP] = { SPECIAL_HYBRID_SLEEP_TARGET, "hybrid-sleep", "replace-irreversibly" },
2682 };
2683
2684 static enum action verb_to_action(const char *verb) {
2685         enum action i;
2686
2687         for (i = _ACTION_INVALID; i < _ACTION_MAX; i++)
2688                 if (streq_ptr(action_table[i].verb, verb))
2689                         return i;
2690
2691         return _ACTION_INVALID;
2692 }
2693
2694 static int start_unit(sd_bus *bus, char **args) {
2695         _cleanup_set_free_free_ Set *s = NULL;
2696         _cleanup_strv_free_ char **names = NULL;
2697         const char *method, *mode, *one_name;
2698         char **name;
2699         int r = 0;
2700
2701         assert(bus);
2702
2703         ask_password_agent_open_if_enabled();
2704
2705         if (arg_action == ACTION_SYSTEMCTL) {
2706                 enum action action;
2707                 method = verb_to_method(args[0]);
2708                 action = verb_to_action(args[0]);
2709
2710                 mode = streq(args[0], "isolate") ? "isolate" :
2711                        action_table[action].mode ?: arg_job_mode;
2712
2713                 one_name = action_table[action].target;
2714         } else {
2715                 assert(arg_action < ELEMENTSOF(action_table));
2716                 assert(action_table[arg_action].target);
2717
2718                 method = "StartUnit";
2719
2720                 mode = action_table[arg_action].mode;
2721                 one_name = action_table[arg_action].target;
2722         }
2723
2724         if (one_name)
2725                 names = strv_new(one_name, NULL);
2726         else {
2727                 r = expand_names(bus, args + 1, NULL, &names);
2728                 if (r < 0)
2729                         log_error("Failed to expand names: %s", strerror(-r));
2730         }
2731
2732         if (!arg_no_block) {
2733                 r = enable_wait_for_jobs(bus);
2734                 if (r < 0) {
2735                         log_error("Could not watch jobs: %s", strerror(-r));
2736                         return r;
2737                 }
2738
2739                 s = set_new(string_hash_func, string_compare_func);
2740                 if (!s)
2741                         return log_oom();
2742         }
2743
2744         STRV_FOREACH(name, names) {
2745                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2746                 int q;
2747
2748                 q = start_unit_one(bus, method, *name, mode, &error, s);
2749                 if (r >= 0 && q < 0)
2750                         r = translate_bus_error_to_exit_status(q, &error);
2751         }
2752
2753         if (!arg_no_block) {
2754                 int q;
2755
2756                 q = wait_for_jobs(bus, s);
2757                 if (q < 0)
2758                         return q;
2759
2760                 /* When stopping units, warn if they can still be triggered by
2761                  * another active unit (socket, path, timer) */
2762                 if (!arg_quiet && streq(method, "StopUnit"))
2763                         STRV_FOREACH(name, names)
2764                                 check_triggering_units(bus, *name);
2765         }
2766
2767         return r;
2768 }
2769
2770 /* Ask systemd-logind, which might grant access to unprivileged users
2771  * through PolicyKit */
2772 static int reboot_with_logind(sd_bus *bus, enum action a) {
2773 #ifdef HAVE_LOGIND
2774         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2775         const char *method;
2776         int r;
2777
2778         if (!bus)
2779                 return -EIO;
2780
2781         polkit_agent_open_if_enabled();
2782
2783         switch (a) {
2784
2785         case ACTION_REBOOT:
2786                 method = "Reboot";
2787                 break;
2788
2789         case ACTION_POWEROFF:
2790                 method = "PowerOff";
2791                 break;
2792
2793         case ACTION_SUSPEND:
2794                 method = "Suspend";
2795                 break;
2796
2797         case ACTION_HIBERNATE:
2798                 method = "Hibernate";
2799                 break;
2800
2801         case ACTION_HYBRID_SLEEP:
2802                 method = "HybridSleep";
2803                 break;
2804
2805         default:
2806                 return -EINVAL;
2807         }
2808
2809         r = sd_bus_call_method(
2810                         bus,
2811                         "org.freedesktop.login1",
2812                         "/org/freedesktop/login1",
2813                         "org.freedesktop.login1.Manager",
2814                         method,
2815                         &error,
2816                         NULL,
2817                         "b", true);
2818         if (r < 0)
2819                 log_error("Failed to execute operation: %s", bus_error_message(&error, r));
2820
2821         return r;
2822 #else
2823         return -ENOSYS;
2824 #endif
2825 }
2826
2827 static int check_inhibitors(sd_bus *bus, enum action a) {
2828 #ifdef HAVE_LOGIND
2829         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2830         _cleanup_strv_free_ char **sessions = NULL;
2831         const char *what, *who, *why, *mode;
2832         uint32_t uid, pid;
2833         unsigned c = 0;
2834         char **s;
2835         int r;
2836
2837         if (!bus)
2838                 return 0;
2839
2840         if (arg_ignore_inhibitors || arg_force > 0)
2841                 return 0;
2842
2843         if (arg_when > 0)
2844                 return 0;
2845
2846         if (geteuid() == 0)
2847                 return 0;
2848
2849         if (!on_tty())
2850                 return 0;
2851
2852         r = sd_bus_call_method(
2853                         bus,
2854                         "org.freedesktop.login1",
2855                         "/org/freedesktop/login1",
2856                         "org.freedesktop.login1.Manager",
2857                         "ListInhibitors",
2858                         NULL,
2859                         &reply,
2860                         NULL);
2861         if (r < 0)
2862                 /* If logind is not around, then there are no inhibitors... */
2863                 return 0;
2864
2865         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssuu)");
2866         if (r < 0)
2867                 return bus_log_parse_error(r);
2868
2869         while ((r = sd_bus_message_read(reply, "(ssssuu)", &what, &who, &why, &mode, &uid, &pid)) > 0) {
2870                 _cleanup_free_ char *comm = NULL, *user = NULL;
2871                 _cleanup_strv_free_ char **sv = NULL;
2872
2873                 if (!streq(mode, "block"))
2874                         continue;
2875
2876                 sv = strv_split(what, ":");
2877                 if (!sv)
2878                         return log_oom();
2879
2880                 if (!strv_contains(sv,
2881                                   a == ACTION_HALT ||
2882                                   a == ACTION_POWEROFF ||
2883                                   a == ACTION_REBOOT ||
2884                                   a == ACTION_KEXEC ? "shutdown" : "sleep"))
2885                         continue;
2886
2887                 get_process_comm(pid, &comm);
2888                 user = uid_to_name(uid);
2889
2890                 log_warning("Operation inhibited by \"%s\" (PID "PID_FMT" \"%s\", user %s), reason is \"%s\".",
2891                             who, pid, strna(comm), strna(user), why);
2892
2893                 c++;
2894         }
2895         if (r < 0)
2896                 return bus_log_parse_error(r);
2897
2898         r = sd_bus_message_exit_container(reply);
2899         if (r < 0)
2900                 return bus_log_parse_error(r);
2901
2902         /* Check for current sessions */
2903         sd_get_sessions(&sessions);
2904         STRV_FOREACH(s, sessions) {
2905                 _cleanup_free_ char *type = NULL, *tty = NULL, *seat = NULL, *user = NULL, *service = NULL, *class = NULL;
2906
2907                 if (sd_session_get_uid(*s, &uid) < 0 || uid == getuid())
2908                         continue;
2909
2910                 if (sd_session_get_class(*s, &class) < 0 || !streq(class, "user"))
2911                         continue;
2912
2913                 if (sd_session_get_type(*s, &type) < 0 || (!streq(type, "x11") && !streq(type, "tty")))
2914                         continue;
2915
2916                 sd_session_get_tty(*s, &tty);
2917                 sd_session_get_seat(*s, &seat);
2918                 sd_session_get_service(*s, &service);
2919                 user = uid_to_name(uid);
2920
2921                 log_warning("User %s is logged in on %s.", strna(user), isempty(tty) ? (isempty(seat) ? strna(service) : seat) : tty);
2922                 c++;
2923         }
2924
2925         if (c <= 0)
2926                 return 0;
2927
2928         log_error("Please retry operation after closing inhibitors and logging out other users.\nAlternatively, ignore inhibitors and users with 'systemctl %s -i'.",
2929                   action_table[a].verb);
2930
2931         return -EPERM;
2932 #else
2933         return 0;
2934 #endif
2935 }
2936
2937 static int start_special(sd_bus *bus, char **args) {
2938         enum action a;
2939         int r;
2940
2941         assert(args);
2942
2943         a = verb_to_action(args[0]);
2944
2945         r = check_inhibitors(bus, a);
2946         if (r < 0)
2947                 return r;
2948
2949         if (arg_force >= 2 && geteuid() != 0) {
2950                 log_error("Must be root.");
2951                 return -EPERM;
2952         }
2953
2954         if (arg_force >= 2 &&
2955             (a == ACTION_HALT ||
2956              a == ACTION_POWEROFF ||
2957              a == ACTION_REBOOT))
2958                 return halt_now(a);
2959
2960         if (arg_force >= 1 &&
2961             (a == ACTION_HALT ||
2962              a == ACTION_POWEROFF ||
2963              a == ACTION_REBOOT ||
2964              a == ACTION_KEXEC ||
2965              a == ACTION_EXIT))
2966                 return daemon_reload(bus, args);
2967
2968         /* first try logind, to allow authentication with polkit */
2969         if (geteuid() != 0 &&
2970             (a == ACTION_POWEROFF ||
2971              a == ACTION_REBOOT ||
2972              a == ACTION_SUSPEND ||
2973              a == ACTION_HIBERNATE ||
2974              a == ACTION_HYBRID_SLEEP)) {
2975                 r = reboot_with_logind(bus, a);
2976                 if (r >= 0)
2977                         return r;
2978         }
2979
2980         r = start_unit(bus, args);
2981         if (r == EXIT_SUCCESS)
2982                 warn_wall(a);
2983
2984         return r;
2985 }
2986
2987 static int check_unit_generic(sd_bus *bus, int code, const char *good_states, char **args) {
2988         _cleanup_strv_free_ char **names = NULL;
2989         char **name;
2990         int r;
2991
2992         assert(bus);
2993         assert(args);
2994
2995         r = expand_names(bus, args, NULL, &names);
2996         if (r < 0) {
2997                 log_error("Failed to expand names: %s", strerror(-r));
2998                 return r;
2999         }
3000
3001         STRV_FOREACH(name, names) {
3002                 int state;
3003
3004                 state = check_one_unit(bus, *name, good_states, arg_quiet);
3005                 if (state < 0)
3006                         return state;
3007                 if (state == 0)
3008                         r = code;
3009         }
3010
3011         return r;
3012 }
3013
3014 static int check_unit_active(sd_bus *bus, char **args) {
3015         /* According to LSB: 3, "program is not running" */
3016         return check_unit_generic(bus, 3, "active\0reloading\0", args + 1);
3017 }
3018
3019 static int check_unit_failed(sd_bus *bus, char **args) {
3020         return check_unit_generic(bus, 1, "failed\0", args + 1);
3021 }
3022
3023 static int kill_unit(sd_bus *bus, char **args) {
3024         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
3025         _cleanup_strv_free_ char **names = NULL;
3026         char **name;
3027         int r, q;
3028
3029         assert(bus);
3030         assert(args);
3031
3032         if (!arg_kill_who)
3033                 arg_kill_who = "all";
3034
3035         r = expand_names(bus, args + 1, NULL, &names);
3036         if (r < 0)
3037                 log_error("Failed to expand names: %s", strerror(-r));
3038
3039         STRV_FOREACH(name, names) {
3040                 q = sd_bus_call_method(
3041                                 bus,
3042                                 "org.freedesktop.systemd1",
3043                                 "/org/freedesktop/systemd1",
3044                                 "org.freedesktop.systemd1.Manager",
3045                                 "KillUnit",
3046                                 &error,
3047                                 NULL,
3048                                 "ssi", *names, arg_kill_who, arg_signal);
3049                 if (q < 0) {
3050                         log_error("Failed to kill unit %s: %s",
3051                                   *names, bus_error_message(&error, r));
3052                         if (r == 0)
3053                                 r = q;
3054                 }
3055         }
3056
3057         return r;
3058 }
3059
3060 typedef struct ExecStatusInfo {
3061         char *name;
3062
3063         char *path;
3064         char **argv;
3065
3066         bool ignore;
3067
3068         usec_t start_timestamp;
3069         usec_t exit_timestamp;
3070         pid_t pid;
3071         int code;
3072         int status;
3073
3074         LIST_FIELDS(struct ExecStatusInfo, exec);
3075 } ExecStatusInfo;
3076
3077 static void exec_status_info_free(ExecStatusInfo *i) {
3078         assert(i);
3079
3080         free(i->name);
3081         free(i->path);
3082         strv_free(i->argv);
3083         free(i);
3084 }
3085
3086 static int exec_status_info_deserialize(sd_bus_message *m, ExecStatusInfo *i) {
3087         uint64_t start_timestamp, exit_timestamp, start_timestamp_monotonic, exit_timestamp_monotonic;
3088         const char *path;
3089         uint32_t pid;
3090         int32_t code, status;
3091         int ignore, r;
3092
3093         assert(m);
3094         assert(i);
3095
3096         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_STRUCT, "sasbttttuii");
3097         if (r < 0)
3098                 return bus_log_parse_error(r);
3099         else if (r == 0)
3100                 return 0;
3101
3102         r = sd_bus_message_read(m, "s", &path);
3103         if (r < 0)
3104                 return bus_log_parse_error(r);
3105
3106         i->path = strdup(path);
3107         if (!i->path)
3108                 return log_oom();
3109
3110         r = sd_bus_message_read_strv(m, &i->argv);
3111         if (r < 0)
3112                 return bus_log_parse_error(r);
3113
3114         r = sd_bus_message_read(m,
3115                                 "bttttuii",
3116                                 &ignore,
3117                                 &start_timestamp, &start_timestamp_monotonic,
3118                                 &exit_timestamp, &exit_timestamp_monotonic,
3119                                 &pid,
3120                                 &code, &status);
3121         if (r < 0)
3122                 return bus_log_parse_error(r);
3123
3124         i->ignore = ignore;
3125         i->start_timestamp = (usec_t) start_timestamp;
3126         i->exit_timestamp = (usec_t) exit_timestamp;
3127         i->pid = (pid_t) pid;
3128         i->code = code;
3129         i->status = status;
3130
3131         r = sd_bus_message_exit_container(m);
3132         if (r < 0)
3133                 return bus_log_parse_error(r);
3134
3135         return 1;
3136 }
3137
3138 typedef struct UnitStatusInfo {
3139         const char *id;
3140         const char *load_state;
3141         const char *active_state;
3142         const char *sub_state;
3143         const char *unit_file_state;
3144
3145         const char *description;
3146         const char *following;
3147
3148         char **documentation;
3149
3150         const char *fragment_path;
3151         const char *source_path;
3152         const char *control_group;
3153
3154         char **dropin_paths;
3155
3156         const char *load_error;
3157         const char *result;
3158
3159         usec_t inactive_exit_timestamp;
3160         usec_t inactive_exit_timestamp_monotonic;
3161         usec_t active_enter_timestamp;
3162         usec_t active_exit_timestamp;
3163         usec_t inactive_enter_timestamp;
3164
3165         bool need_daemon_reload;
3166
3167         /* Service */