chiark / gitweb /
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[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);
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_close_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_ops);
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
1354                 units = new(UnitFileList, n_units);
1355                 if (!units && n_units > 0) {
1356                         unit_file_list_free(h);
1357                         return log_oom();
1358                 }
1359
1360                 HASHMAP_FOREACH(u, h, i) {
1361                         if (!output_show_unit_file(u, strv_skip_first(args)))
1362                                 continue;
1363
1364                         units[c++] = *u;
1365                         free(u);
1366                 }
1367
1368                 assert(c <= n_units);
1369                 hashmap_free(h);
1370         } else {
1371                 r = sd_bus_call_method(
1372                                 bus,
1373                                 "org.freedesktop.systemd1",
1374                                 "/org/freedesktop/systemd1",
1375                                 "org.freedesktop.systemd1.Manager",
1376                                 "ListUnitFiles",
1377                                 &error,
1378                                 &reply,
1379                                 NULL);
1380                 if (r < 0) {
1381                         log_error("Failed to list unit files: %s", bus_error_message(&error, r));
1382                         return r;
1383                 }
1384
1385                 r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ss)");
1386                 if (r < 0)
1387                         return bus_log_parse_error(r);
1388
1389                 while ((r = sd_bus_message_read(reply, "(ss)", &path, &state)) > 0) {
1390
1391                         if (!GREEDY_REALLOC(units, size, c + 1))
1392                                 return log_oom();
1393
1394                         units[c] = (struct UnitFileList) {
1395                                 path,
1396                                 unit_file_state_from_string(state)
1397                         };
1398
1399                         if (output_show_unit_file(&units[c], strv_skip_first(args)))
1400                                 c ++;
1401
1402                 }
1403                 if (r < 0)
1404                         return bus_log_parse_error(r);
1405
1406                 r = sd_bus_message_exit_container(reply);
1407                 if (r < 0)
1408                         return bus_log_parse_error(r);
1409         }
1410
1411         qsort_safe(units, c, sizeof(UnitFileList), compare_unit_file_list);
1412         output_unit_file_list(units, c);
1413
1414         if (avoid_bus()) {
1415                 for (unit = units; unit < units + c; unit++)
1416                         free(unit->path);
1417         }
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_close_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                         if (d->name) {
2356                                 bool quotes;
2357
2358                                 quotes = chars_intersect(d->name, SHELL_NEED_QUOTES);
2359
2360                                 log_error("Job for %s failed. See \"systemctl status %s%s%s\" and \"journalctl -xn\" for details.",
2361                                           d->name,
2362                                           quotes ? "'" : "", d->name, quotes ? "'" : "");
2363                         } else
2364                                 log_error("Job failed. See \"journalctl -xn\" for details.");
2365                 }
2366         }
2367
2368         if (streq(d->result, "timeout"))
2369                 r = -ETIME;
2370         else if (streq(d->result, "canceled"))
2371                 r = -ECANCELED;
2372         else if (streq(d->result, "dependency"))
2373                 r = -EIO;
2374         else if (!streq(d->result, "done") && !streq(d->result, "skipped"))
2375                 r = -EIO;
2376
2377         return r;
2378 }
2379
2380 static int wait_for_jobs(sd_bus *bus, Set *s) {
2381         _cleanup_bus_slot_unref_ sd_bus_slot *slot = NULL;
2382         WaitData d = { .set = s };
2383         int r = 0, q;
2384
2385         assert(bus);
2386         assert(s);
2387
2388         q = sd_bus_add_filter(bus, &slot, wait_filter, &d);
2389         if (q < 0)
2390                 return log_oom();
2391
2392         while (!set_isempty(s)) {
2393                 q = bus_process_wait(bus);
2394                 if (q < 0) {
2395                         log_error("Failed to wait for response: %s", strerror(-q));
2396                         return q;
2397                 }
2398
2399                 if (d.result) {
2400                         q = check_wait_response(&d);
2401                         /* Return the first error as it is most likely to be
2402                          * meaningful. */
2403                         if (q < 0 && r == 0)
2404                                 r = q;
2405                         log_debug("Got result %s/%s for job %s",
2406                                   strna(d.result), strerror(-q), strna(d.name));
2407                 }
2408
2409                 free(d.name);
2410                 d.name = NULL;
2411
2412                 free(d.result);
2413                 d.result = NULL;
2414         }
2415
2416         return r;
2417 }
2418
2419 static int check_one_unit(sd_bus *bus, const char *name, const char *good_states, bool quiet) {
2420         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2421         _cleanup_free_ char *n = NULL, *state = NULL;
2422         const char *path;
2423         int r;
2424
2425         assert(name);
2426
2427         n = unit_name_mangle(name, MANGLE_NOGLOB);
2428         if (!n)
2429                 return log_oom();
2430
2431         /* We don't use unit_dbus_path_from_name() directly since we
2432          * don't want to load the unit if it isn't loaded. */
2433
2434         r = sd_bus_call_method(
2435                         bus,
2436                         "org.freedesktop.systemd1",
2437                         "/org/freedesktop/systemd1",
2438                         "org.freedesktop.systemd1.Manager",
2439                         "GetUnit",
2440                         NULL,
2441                         &reply,
2442                         "s", n);
2443         if (r < 0) {
2444                 if (!quiet)
2445                         puts("unknown");
2446                 return 0;
2447         }
2448
2449         r = sd_bus_message_read(reply, "o", &path);
2450         if (r < 0)
2451                 return bus_log_parse_error(r);
2452
2453         r = sd_bus_get_property_string(
2454                         bus,
2455                         "org.freedesktop.systemd1",
2456                         path,
2457                         "org.freedesktop.systemd1.Unit",
2458                         "ActiveState",
2459                         NULL,
2460                         &state);
2461         if (r < 0) {
2462                 if (!quiet)
2463                         puts("unknown");
2464                 return 0;
2465         }
2466
2467         if (!quiet)
2468                 puts(state);
2469
2470         return nulstr_contains(good_states, state);
2471 }
2472
2473 static int check_triggering_units(
2474                 sd_bus *bus,
2475                 const char *name) {
2476
2477         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2478         _cleanup_free_ char *path = NULL, *n = NULL, *state = NULL;
2479         _cleanup_strv_free_ char **triggered_by = NULL;
2480         bool print_warning_label = true;
2481         char **i;
2482         int r;
2483
2484         n = unit_name_mangle(name, MANGLE_NOGLOB);
2485         if (!n)
2486                 return log_oom();
2487
2488         path = unit_dbus_path_from_name(n);
2489         if (!path)
2490                 return log_oom();
2491
2492         r = sd_bus_get_property_string(
2493                         bus,
2494                         "org.freedesktop.systemd1",
2495                         path,
2496                         "org.freedesktop.systemd1.Unit",
2497                         "LoadState",
2498                         &error,
2499                         &state);
2500         if (r < 0) {
2501                 log_error("Failed to get load state of %s: %s", n, bus_error_message(&error, r));
2502                 return r;
2503         }
2504
2505         if (streq(state, "masked"))
2506                 return 0;
2507
2508         r = sd_bus_get_property_strv(
2509                         bus,
2510                         "org.freedesktop.systemd1",
2511                         path,
2512                         "org.freedesktop.systemd1.Unit",
2513                         "TriggeredBy",
2514                         &error,
2515                         &triggered_by);
2516         if (r < 0) {
2517                 log_error("Failed to get triggered by array of %s: %s", n, bus_error_message(&error, r));
2518                 return r;
2519         }
2520
2521         STRV_FOREACH(i, triggered_by) {
2522                 r = check_one_unit(bus, *i, "active\0reloading\0", true);
2523                 if (r < 0) {
2524                         log_error("Failed to check unit: %s", strerror(-r));
2525                         return r;
2526                 }
2527
2528                 if (r == 0)
2529                         continue;
2530
2531                 if (print_warning_label) {
2532                         log_warning("Warning: Stopping %s, but it can still be activated by:", n);
2533                         print_warning_label = false;
2534                 }
2535
2536                 log_warning("  %s", *i);
2537         }
2538
2539         return 0;
2540 }
2541
2542 static const char *verb_to_method(const char *verb) {
2543        uint i;
2544
2545        for (i = 0; i < ELEMENTSOF(unit_actions); i++)
2546                 if (streq_ptr(unit_actions[i].verb, verb))
2547                         return unit_actions[i].method;
2548
2549        return "StartUnit";
2550 }
2551
2552 static const char *method_to_verb(const char *method) {
2553        uint i;
2554
2555        for (i = 0; i < ELEMENTSOF(unit_actions); i++)
2556                 if (streq_ptr(unit_actions[i].method, method))
2557                         return unit_actions[i].verb;
2558
2559        return "n/a";
2560 }
2561
2562 static int start_unit_one(
2563                 sd_bus *bus,
2564                 const char *method,
2565                 const char *name,
2566                 const char *mode,
2567                 sd_bus_error *error,
2568                 Set *s) {
2569
2570         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2571         const char *path;
2572         int r;
2573
2574         assert(method);
2575         assert(name);
2576         assert(mode);
2577         assert(error);
2578
2579         log_debug("Calling manager for %s on %s, %s", method, name, mode);
2580         r = sd_bus_call_method(
2581                         bus,
2582                         "org.freedesktop.systemd1",
2583                         "/org/freedesktop/systemd1",
2584                         "org.freedesktop.systemd1.Manager",
2585                         method,
2586                         error,
2587                         &reply,
2588                         "ss", name, mode);
2589         if (r < 0) {
2590                 const char *verb;
2591
2592                 if (r == -ENOENT && arg_action != ACTION_SYSTEMCTL)
2593                         /* There's always a fallback possible for
2594                          * legacy actions. */
2595                         return -EADDRNOTAVAIL;
2596
2597                 verb = method_to_verb(method);
2598
2599                 log_error("Failed to %s %s: %s", verb, name, bus_error_message(error, r));
2600                 return r;
2601         }
2602
2603         r = sd_bus_message_read(reply, "o", &path);
2604         if (r < 0)
2605                 return bus_log_parse_error(r);
2606
2607         if (need_daemon_reload(bus, name) > 0)
2608                 log_warning("Warning: Unit file of %s changed on disk, 'systemctl%s daemon-reload' recommended.",
2609                             name, arg_scope == UNIT_FILE_SYSTEM ? "" : " --user");
2610
2611         if (s) {
2612                 char *p;
2613
2614                 p = strdup(path);
2615                 if (!p)
2616                         return log_oom();
2617
2618                 log_debug("Adding %s to the set", p);
2619                 r = set_consume(s, p);
2620                 if (r < 0)
2621                         return log_oom();
2622         }
2623
2624         return 0;
2625 }
2626
2627 static int expand_names(sd_bus *bus, char **names, const char* suffix, char ***ret) {
2628
2629         _cleanup_strv_free_ char **mangled = NULL, **globs = NULL;
2630         char **name;
2631         int r = 0, i;
2632
2633         STRV_FOREACH(name, names) {
2634                 char *t;
2635
2636                 if (suffix)
2637                         t = unit_name_mangle_with_suffix(*name, MANGLE_GLOB, suffix);
2638                 else
2639                         t = unit_name_mangle(*name, MANGLE_GLOB);
2640                 if (!t)
2641                         return log_oom();
2642
2643                 if (string_is_glob(t))
2644                         r = strv_consume(&globs, t);
2645                 else
2646                         r = strv_consume(&mangled, t);
2647                 if (r < 0)
2648                         return log_oom();
2649         }
2650
2651         /* Query the manager only if any of the names are a glob, since
2652          * this is fairly expensive */
2653         if (!strv_isempty(globs)) {
2654                 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2655                 _cleanup_free_ UnitInfo *unit_infos = NULL;
2656
2657                 r = get_unit_list(bus, NULL, globs, &unit_infos, 0, &reply);
2658                 if (r < 0)
2659                         return r;
2660
2661                 for (i = 0; i < r; i++)
2662                         if (strv_extend(&mangled, unit_infos[i].id) < 0)
2663                                 return log_oom();
2664         }
2665
2666         *ret = mangled;
2667         mangled = NULL; /* do not free */
2668
2669         return 0;
2670 }
2671
2672 static const struct {
2673         const char *target;
2674         const char *verb;
2675         const char *mode;
2676 } action_table[_ACTION_MAX] = {
2677         [ACTION_HALT]         = { SPECIAL_HALT_TARGET,         "halt",         "replace-irreversibly" },
2678         [ACTION_POWEROFF]     = { SPECIAL_POWEROFF_TARGET,     "poweroff",     "replace-irreversibly" },
2679         [ACTION_REBOOT]       = { SPECIAL_REBOOT_TARGET,       "reboot",       "replace-irreversibly" },
2680         [ACTION_KEXEC]        = { SPECIAL_KEXEC_TARGET,        "kexec",        "replace-irreversibly" },
2681         [ACTION_RUNLEVEL2]    = { SPECIAL_RUNLEVEL2_TARGET,    NULL,           "isolate" },
2682         [ACTION_RUNLEVEL3]    = { SPECIAL_RUNLEVEL3_TARGET,    NULL,           "isolate" },
2683         [ACTION_RUNLEVEL4]    = { SPECIAL_RUNLEVEL4_TARGET,    NULL,           "isolate" },
2684         [ACTION_RUNLEVEL5]    = { SPECIAL_RUNLEVEL5_TARGET,    NULL,           "isolate" },
2685         [ACTION_RESCUE]       = { SPECIAL_RESCUE_TARGET,       "rescue",       "isolate" },
2686         [ACTION_EMERGENCY]    = { SPECIAL_EMERGENCY_TARGET,    "emergency",    "isolate" },
2687         [ACTION_DEFAULT]      = { SPECIAL_DEFAULT_TARGET,      "default",      "isolate" },
2688         [ACTION_EXIT]         = { SPECIAL_EXIT_TARGET,         "exit",         "replace-irreversibly" },
2689         [ACTION_SUSPEND]      = { SPECIAL_SUSPEND_TARGET,      "suspend",      "replace-irreversibly" },
2690         [ACTION_HIBERNATE]    = { SPECIAL_HIBERNATE_TARGET,    "hibernate",    "replace-irreversibly" },
2691         [ACTION_HYBRID_SLEEP] = { SPECIAL_HYBRID_SLEEP_TARGET, "hybrid-sleep", "replace-irreversibly" },
2692 };
2693
2694 static enum action verb_to_action(const char *verb) {
2695         enum action i;
2696
2697         for (i = _ACTION_INVALID; i < _ACTION_MAX; i++)
2698                 if (streq_ptr(action_table[i].verb, verb))
2699                         return i;
2700
2701         return _ACTION_INVALID;
2702 }
2703
2704 static int start_unit(sd_bus *bus, char **args) {
2705         _cleanup_set_free_free_ Set *s = NULL;
2706         _cleanup_strv_free_ char **names = NULL;
2707         const char *method, *mode, *one_name;
2708         char **name;
2709         int r = 0;
2710
2711         assert(bus);
2712
2713         ask_password_agent_open_if_enabled();
2714
2715         if (arg_action == ACTION_SYSTEMCTL) {
2716                 enum action action;
2717                 method = verb_to_method(args[0]);
2718                 action = verb_to_action(args[0]);
2719
2720                 mode = streq(args[0], "isolate") ? "isolate" :
2721                        action_table[action].mode ?: arg_job_mode;
2722
2723                 one_name = action_table[action].target;
2724         } else {
2725                 assert(arg_action < ELEMENTSOF(action_table));
2726                 assert(action_table[arg_action].target);
2727
2728                 method = "StartUnit";
2729
2730                 mode = action_table[arg_action].mode;
2731                 one_name = action_table[arg_action].target;
2732         }
2733
2734         if (one_name)
2735                 names = strv_new(one_name, NULL);
2736         else {
2737                 r = expand_names(bus, args + 1, NULL, &names);
2738                 if (r < 0)
2739                         log_error("Failed to expand names: %s", strerror(-r));
2740         }
2741
2742         if (!arg_no_block) {
2743                 r = enable_wait_for_jobs(bus);
2744                 if (r < 0) {
2745                         log_error("Could not watch jobs: %s", strerror(-r));
2746                         return r;
2747                 }
2748
2749                 s = set_new(&string_hash_ops);
2750                 if (!s)
2751                         return log_oom();
2752         }
2753
2754         STRV_FOREACH(name, names) {
2755                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2756                 int q;
2757
2758                 q = start_unit_one(bus, method, *name, mode, &error, s);
2759                 if (r >= 0 && q < 0)
2760                         r = translate_bus_error_to_exit_status(q, &error);
2761         }
2762
2763         if (!arg_no_block) {
2764                 int q;
2765
2766                 q = wait_for_jobs(bus, s);
2767                 if (q < 0)
2768                         return q;
2769
2770                 /* When stopping units, warn if they can still be triggered by
2771                  * another active unit (socket, path, timer) */
2772                 if (!arg_quiet && streq(method, "StopUnit"))
2773                         STRV_FOREACH(name, names)
2774                                 check_triggering_units(bus, *name);
2775         }
2776
2777         return r;
2778 }
2779
2780 /* Ask systemd-logind, which might grant access to unprivileged users
2781  * through PolicyKit */
2782 static int reboot_with_logind(sd_bus *bus, enum action a) {
2783 #ifdef HAVE_LOGIND
2784         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2785         const char *method;
2786         int r;
2787
2788         if (!bus)
2789                 return -EIO;
2790
2791         polkit_agent_open_if_enabled();
2792
2793         switch (a) {
2794
2795         case ACTION_REBOOT:
2796                 method = "Reboot";
2797                 break;
2798
2799         case ACTION_POWEROFF:
2800                 method = "PowerOff";
2801                 break;
2802
2803         case ACTION_SUSPEND:
2804                 method = "Suspend";
2805                 break;
2806
2807         case ACTION_HIBERNATE:
2808                 method = "Hibernate";
2809                 break;
2810
2811         case ACTION_HYBRID_SLEEP:
2812                 method = "HybridSleep";
2813                 break;
2814
2815         default:
2816                 return -EINVAL;
2817         }
2818
2819         r = sd_bus_call_method(
2820                         bus,
2821                         "org.freedesktop.login1",
2822                         "/org/freedesktop/login1",
2823                         "org.freedesktop.login1.Manager",
2824                         method,
2825                         &error,
2826                         NULL,
2827                         "b", true);
2828         if (r < 0)
2829                 log_error("Failed to execute operation: %s", bus_error_message(&error, r));
2830
2831         return r;
2832 #else
2833         return -ENOSYS;
2834 #endif
2835 }
2836
2837 static int check_inhibitors(sd_bus *bus, enum action a) {
2838 #ifdef HAVE_LOGIND
2839         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2840         _cleanup_strv_free_ char **sessions = NULL;
2841         const char *what, *who, *why, *mode;
2842         uint32_t uid, pid;
2843         unsigned c = 0;
2844         char **s;
2845         int r;
2846
2847         if (!bus)
2848                 return 0;
2849
2850         if (arg_ignore_inhibitors || arg_force > 0)
2851                 return 0;
2852
2853         if (arg_when > 0)
2854                 return 0;
2855
2856         if (geteuid() == 0)
2857                 return 0;
2858
2859         if (!on_tty())
2860                 return 0;
2861
2862         r = sd_bus_call_method(
2863                         bus,
2864                         "org.freedesktop.login1",
2865                         "/org/freedesktop/login1",
2866                         "org.freedesktop.login1.Manager",
2867                         "ListInhibitors",
2868                         NULL,
2869                         &reply,
2870                         NULL);
2871         if (r < 0)
2872                 /* If logind is not around, then there are no inhibitors... */
2873                 return 0;
2874
2875         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssuu)");
2876         if (r < 0)
2877                 return bus_log_parse_error(r);
2878
2879         while ((r = sd_bus_message_read(reply, "(ssssuu)", &what, &who, &why, &mode, &uid, &pid)) > 0) {
2880                 _cleanup_free_ char *comm = NULL, *user = NULL;
2881                 _cleanup_strv_free_ char **sv = NULL;
2882
2883                 if (!streq(mode, "block"))
2884                         continue;
2885
2886                 sv = strv_split(what, ":");
2887                 if (!sv)
2888                         return log_oom();
2889
2890                 if (!strv_contains(sv,
2891                                   a == ACTION_HALT ||
2892                                   a == ACTION_POWEROFF ||
2893                                   a == ACTION_REBOOT ||
2894                                   a == ACTION_KEXEC ? "shutdown" : "sleep"))
2895                         continue;
2896
2897                 get_process_comm(pid, &comm);
2898                 user = uid_to_name(uid);
2899
2900                 log_warning("Operation inhibited by \"%s\" (PID "PID_FMT" \"%s\", user %s), reason is \"%s\".",
2901                             who, pid, strna(comm), strna(user), why);
2902
2903                 c++;
2904         }
2905         if (r < 0)
2906                 return bus_log_parse_error(r);
2907
2908         r = sd_bus_message_exit_container(reply);
2909         if (r < 0)
2910                 return bus_log_parse_error(r);
2911
2912         /* Check for current sessions */
2913         sd_get_sessions(&sessions);
2914         STRV_FOREACH(s, sessions) {
2915                 _cleanup_free_ char *type = NULL, *tty = NULL, *seat = NULL, *user = NULL, *service = NULL, *class = NULL;
2916
2917                 if (sd_session_get_uid(*s, &uid) < 0 || uid == getuid())
2918                         continue;
2919
2920                 if (sd_session_get_class(*s, &class) < 0 || !streq(class, "user"))
2921                         continue;
2922
2923                 if (sd_session_get_type(*s, &type) < 0 || (!streq(type, "x11") && !streq(type, "tty")))
2924                         continue;
2925
2926                 sd_session_get_tty(*s, &tty);
2927                 sd_session_get_seat(*s, &seat);
2928                 sd_session_get_service(*s, &service);
2929                 user = uid_to_name(uid);
2930
2931                 log_warning("User %s is logged in on %s.", strna(user), isempty(tty) ? (isempty(seat) ? strna(service) : seat) : tty);
2932                 c++;
2933         }
2934
2935         if (c <= 0)
2936                 return 0;
2937
2938         log_error("Please retry operation after closing inhibitors and logging out other users.\nAlternatively, ignore inhibitors and users with 'systemctl %s -i'.",
2939                   action_table[a].verb);
2940
2941         return -EPERM;
2942 #else
2943         return 0;
2944 #endif
2945 }
2946
2947 static int start_special(sd_bus *bus, char **args) {
2948         enum action a;
2949         int r;
2950
2951         assert(args);
2952
2953         a = verb_to_action(args[0]);
2954
2955         r = check_inhibitors(bus, a);
2956         if (r < 0)
2957                 return r;
2958
2959         if (arg_force >= 2 && geteuid() != 0) {
2960                 log_error("Must be root.");
2961                 return -EPERM;
2962         }
2963
2964         if (arg_force >= 2 &&
2965             (a == ACTION_HALT ||
2966              a == ACTION_POWEROFF ||
2967              a == ACTION_REBOOT))
2968                 return halt_now(a);
2969
2970         if (arg_force >= 1 &&
2971             (a == ACTION_HALT ||
2972              a == ACTION_POWEROFF ||
2973              a == ACTION_REBOOT ||
2974              a == ACTION_KEXEC ||
2975              a == ACTION_EXIT))
2976                 return daemon_reload(bus, args);
2977
2978         /* first try logind, to allow authentication with polkit */
2979         if (geteuid() != 0 &&
2980             (a == ACTION_POWEROFF ||
2981              a == ACTION_REBOOT ||
2982              a == ACTION_SUSPEND ||
2983              a == ACTION_HIBERNATE ||
2984              a == ACTION_HYBRID_SLEEP)) {
2985                 r = reboot_with_logind(bus, a);
2986                 if (r >= 0)
2987                         return r;
2988         }
2989
2990         r = start_unit(bus, args);
2991         if (r == EXIT_SUCCESS)
2992                 warn_wall(a);
2993
2994         return r;
2995 }
2996
2997 static int check_unit_generic(sd_bus *bus, int code, const char *good_states, char **args) {
2998         _cleanup_strv_free_ char **names = NULL;
2999         char **name;
3000         int r;
3001
3002         assert(bus);
3003         assert(args);
3004
3005         r = expand_names(bus, args, NULL, &names);
3006         if (r < 0) {
3007                 log_error("Failed to expand names: %s", strerror(-r));
3008                 return r;
3009         }
3010
3011         STRV_FOREACH(name, names) {
3012                 int state;
3013
3014                 state = check_one_unit(bus, *name, good_states, arg_quiet);
3015                 if (state < 0)
3016                         return state;
3017                 if (state == 0)
3018                         r = code;
3019         }
3020
3021         return r;
3022 }
3023
3024 static int check_unit_active(sd_bus *bus, char **args) {
3025         /* According to LSB: 3, "program is not running" */
3026         return check_unit_generic(bus, 3, "active\0reloading\0", args + 1);
3027 }
3028
3029 static int check_unit_failed(sd_bus *bus, char **args) {
3030         return check_unit_generic(bus, 1, "failed\0", args + 1);
3031 }
3032
3033 static int kill_unit(sd_bus *bus, char **args) {
3034         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
3035         _cleanup_strv_free_ char **names = NULL;
3036         char **name;
3037         int r, q;
3038
3039         assert(bus);
3040         assert(args);
3041
3042         if (!arg_kill_who)
3043                 arg_kill_who = "all";
3044
3045         r = expand_names(bus, args + 1, NULL, &names);
3046         if (r < 0)
3047                 log_error("Failed to expand names: %s", strerror(-r));
3048
3049         STRV_FOREACH(name, names) {
3050                 q = sd_bus_call_method(
3051                                 bus,
3052                                 "org.freedesktop.systemd1",
3053                                 "/org/freedesktop/systemd1",
3054                                 "org.freedesktop.systemd1.Manager",
3055                                 "KillUnit",
3056                                 &error,
3057                                 NULL,
3058                                 "ssi", *names, arg_kill_who, arg_signal);
3059                 if (q < 0) {
3060                         log_error("Failed to kill unit %s: %s",
3061                                   *names, bus_error_message(&error, r));
3062                         if (r == 0)
3063                                 r = q;
3064                 }
3065         }
3066
3067         return r;
3068 }
3069
3070 typedef struct ExecStatusInfo {
3071         char *name;
3072
3073         char *path;
3074         char **argv;
3075
3076         bool ignore;
3077
3078         usec_t start_timestamp;
3079         usec_t exit_timestamp;
3080         pid_t pid;
3081         int code;
3082         int status;
3083
3084         LIST_FIELDS(struct ExecStatusInfo, exec);
3085 } ExecStatusInfo;
3086
3087 static void exec_status_info_free(ExecStatusInfo *i) {
3088         assert(i);
3089
3090         free(i->name);
3091         free(i->path);
3092         strv_free(i->argv);
3093         free(i);
3094 }
3095
3096 static int exec_status_info_deserialize(sd_bus_message *m, ExecStatusInfo *i) {
3097         uint64_t start_timestamp, exit_timestamp, start_timestamp_monotonic, exit_timestamp_monotonic;
3098         const char *path;
3099         uint32_t pid;
3100         int32_t code, status;
3101         int ignore, r;
3102
3103         assert(m);
3104         assert(i);
3105
3106         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_STRUCT, "sasbttttuii");
3107         if (r < 0)
3108                 return bus_log_parse_error(r);
3109         else if (r == 0)
3110                 return 0;
3111
3112         r = sd_bus_message_read(m, "s", &path);
3113         if (r < 0)
3114                 return bus_log_parse_error(r);
3115
3116         i->path = strdup(path);
3117         if (!i->path)
3118                 return log_oom();
3119
3120         r = sd_bus_message_read_strv(m, &i->argv);
3121         if (r < 0)
3122                 return bus_log_parse_error(r);
3123
3124         r = sd_bus_message_read(m,
3125                                 "bttttuii",
3126                                 &ignore,
3127                                 &start_timestamp, &start_timestamp_monotonic,
3128                                 &exit_timestamp, &exit_timestamp_monotonic,
3129                                 &pid,
3130                                 &code, &status);
3131         if (r < 0)
3132                 return bus_log_parse_error(r);
3133
3134         i->ignore = ignore;
3135         i->start_timestamp = (usec_t) start_timestamp;
3136         i->exit_timestamp = (usec_t) exit_timestamp;
3137         i->pid = (pid_t) pid;
3138         i->code = code;
3139         i->status = status;
3140
3141         r = sd_bus_message_exit_container(m);
3142         if (r < 0)
3143                 return bus_log_parse_error(r);
3144
3145         return 1;
3146 }
3147
3148 typedef struct UnitStatusInfo {
3149         const char *id;
3150         const char *load_state;
3151         const char *active_state;
3152         const char *sub_state;
3153         const char *unit_file_state;
3154
3155         const char *description;
3156         const char *following;
3157
3158         char **documentation;
3159
3160         const char *fragment_path;
3161         const char *source_path;
3162         const char *control_group;
3163
3164         char **dropin_paths;
3165
3166         const char *load_error;
3167         const char *result;