chiark / gitweb /
systemctl: allow globbing in list-<whatever> commands
[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 "bus-errors.h"
62 #include "build.h"
63 #include "unit-name.h"
64 #include "pager.h"
65 #include "spawn-ask-password-agent.h"
66 #include "spawn-polkit-agent.h"
67 #include "install.h"
68 #include "logs-show.h"
69 #include "socket-util.h"
70 #include "fileio.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 bool original_stdout_is_tty;
81 static enum dependency {
82         DEPENDENCY_FORWARD,
83         DEPENDENCY_REVERSE,
84         DEPENDENCY_AFTER,
85         DEPENDENCY_BEFORE,
86         _DEPENDENCY_MAX
87 } arg_dependency = DEPENDENCY_FORWARD;
88 static const char *arg_job_mode = "replace";
89 static UnitFileScope arg_scope = UNIT_FILE_SYSTEM;
90 static bool arg_no_block = false;
91 static bool arg_no_legend = false;
92 static bool arg_no_pager = false;
93 static bool arg_no_wtmp = false;
94 static bool arg_no_wall = false;
95 static bool arg_no_reload = false;
96 static bool arg_show_types = false;
97 static bool arg_ignore_inhibitors = false;
98 static bool arg_dry = false;
99 static bool arg_quiet = false;
100 static bool arg_full = false;
101 static int arg_force = 0;
102 static bool arg_ask_password = true;
103 static bool arg_runtime = false;
104 static char **arg_wall = NULL;
105 static const char *arg_kill_who = NULL;
106 static int arg_signal = SIGTERM;
107 static const char *arg_root = NULL;
108 static usec_t arg_when = 0;
109 static enum action {
110         _ACTION_INVALID,
111         ACTION_SYSTEMCTL,
112         ACTION_HALT,
113         ACTION_POWEROFF,
114         ACTION_REBOOT,
115         ACTION_KEXEC,
116         ACTION_EXIT,
117         ACTION_SUSPEND,
118         ACTION_HIBERNATE,
119         ACTION_HYBRID_SLEEP,
120         ACTION_RUNLEVEL2,
121         ACTION_RUNLEVEL3,
122         ACTION_RUNLEVEL4,
123         ACTION_RUNLEVEL5,
124         ACTION_RESCUE,
125         ACTION_EMERGENCY,
126         ACTION_DEFAULT,
127         ACTION_RELOAD,
128         ACTION_REEXEC,
129         ACTION_RUNLEVEL,
130         ACTION_CANCEL_SHUTDOWN,
131         _ACTION_MAX
132 } arg_action = ACTION_SYSTEMCTL;
133 static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;
134 static char *arg_host = NULL;
135 static unsigned arg_lines = 10;
136 static OutputMode arg_output = OUTPUT_SHORT;
137 static bool arg_plain = false;
138
139 static int daemon_reload(sd_bus *bus, char **args);
140 static int halt_now(enum action a);
141
142 static int check_one_unit(sd_bus *bus, const char *name, const char *good_states, bool quiet);
143
144 static char** strv_skip_first(char **strv) {
145         if (strv_length(strv) > 0)
146                 return strv + 1;
147         return NULL;
148 }
149
150 static void pager_open_if_enabled(void) {
151
152         if (arg_no_pager)
153                 return;
154
155         pager_open(false);
156 }
157
158 static void ask_password_agent_open_if_enabled(void) {
159
160         /* Open the password agent as a child process if necessary */
161
162         if (!arg_ask_password)
163                 return;
164
165         if (arg_scope != UNIT_FILE_SYSTEM)
166                 return;
167
168         if (arg_transport != BUS_TRANSPORT_LOCAL)
169                 return;
170
171         ask_password_agent_open();
172 }
173
174 #ifdef HAVE_LOGIND
175 static void polkit_agent_open_if_enabled(void) {
176
177         /* Open the polkit agent as a child process if necessary */
178
179         if (!arg_ask_password)
180                 return;
181
182         if (arg_scope != UNIT_FILE_SYSTEM)
183                 return;
184
185         if (arg_transport != BUS_TRANSPORT_LOCAL)
186                 return;
187
188         polkit_agent_open();
189 }
190 #endif
191
192 static int translate_bus_error_to_exit_status(int r, const sd_bus_error *error) {
193         assert(error);
194
195         if (!sd_bus_error_is_set(error))
196                 return r;
197
198         if (sd_bus_error_has_name(error, SD_BUS_ERROR_ACCESS_DENIED) ||
199             sd_bus_error_has_name(error, BUS_ERROR_ONLY_BY_DEPENDENCY) ||
200             sd_bus_error_has_name(error, BUS_ERROR_NO_ISOLATION) ||
201             sd_bus_error_has_name(error, BUS_ERROR_TRANSACTION_IS_DESTRUCTIVE))
202                 return EXIT_NOPERMISSION;
203
204         if (sd_bus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT))
205                 return EXIT_NOTINSTALLED;
206
207         if (sd_bus_error_has_name(error, BUS_ERROR_JOB_TYPE_NOT_APPLICABLE) ||
208             sd_bus_error_has_name(error, SD_BUS_ERROR_NOT_SUPPORTED))
209                 return EXIT_NOTIMPLEMENTED;
210
211         if (sd_bus_error_has_name(error, BUS_ERROR_LOAD_FAILED))
212                 return EXIT_NOTCONFIGURED;
213
214         if (r != 0)
215                 return r;
216
217         return EXIT_FAILURE;
218 }
219
220 static void warn_wall(enum action a) {
221         static const char *table[_ACTION_MAX] = {
222                 [ACTION_HALT]            = "The system is going down for system halt NOW!",
223                 [ACTION_REBOOT]          = "The system is going down for reboot NOW!",
224                 [ACTION_POWEROFF]        = "The system is going down for power-off NOW!",
225                 [ACTION_KEXEC]           = "The system is going down for kexec reboot NOW!",
226                 [ACTION_RESCUE]          = "The system is going down to rescue mode NOW!",
227                 [ACTION_EMERGENCY]       = "The system is going down to emergency mode NOW!",
228                 [ACTION_CANCEL_SHUTDOWN] = "The system shutdown has been cancelled NOW!"
229         };
230
231         if (arg_no_wall)
232                 return;
233
234         if (arg_wall) {
235                 _cleanup_free_ char *p;
236
237                 p = strv_join(arg_wall, " ");
238                 if (!p) {
239                         log_oom();
240                         return;
241                 }
242
243                 if (*p) {
244                         utmp_wall(p, NULL);
245                         return;
246                 }
247         }
248
249         if (!table[a])
250                 return;
251
252         utmp_wall(table[a], NULL);
253 }
254
255 static bool avoid_bus(void) {
256
257         if (running_in_chroot() > 0)
258                 return true;
259
260         if (sd_booted() <= 0)
261                 return true;
262
263         if (!isempty(arg_root))
264                 return true;
265
266         if (arg_scope == UNIT_FILE_GLOBAL)
267                 return true;
268
269         return false;
270 }
271
272 static int compare_unit_info(const void *a, const void *b) {
273         const UnitInfo *u = a, *v = b;
274         const char *d1, *d2;
275
276         d1 = strrchr(u->id, '.');
277         d2 = strrchr(v->id, '.');
278
279         if (d1 && d2) {
280                 int r;
281
282                 r = strcasecmp(d1, d2);
283                 if (r != 0)
284                         return r;
285         }
286
287         return strcasecmp(u->id, v->id);
288 }
289
290 static bool output_show_unit(const UnitInfo *u, char **patterns) {
291         const char *dot;
292
293         if (!strv_isempty(arg_states))
294                 return
295                         strv_contains(arg_states, u->load_state) ||
296                         strv_contains(arg_states, u->sub_state) ||
297                         strv_contains(arg_states, u->active_state);
298
299         if (!strv_isempty(patterns)) {
300                 char **pattern;
301
302                 STRV_FOREACH(pattern, patterns)
303                         if (fnmatch(*pattern, u->id, FNM_NOESCAPE) == 0)
304                                 return true;
305                 return false;
306         }
307
308         return (!arg_types || ((dot = strrchr(u->id, '.')) &&
309                                strv_find(arg_types, dot+1))) &&
310                 (arg_all || !(streq(u->active_state, "inactive")
311                               || u->following[0]) || u->job_id > 0);
312 }
313
314 static void output_units_list(const UnitInfo *unit_infos, unsigned c, char** patterns) {
315         unsigned id_len, max_id_len, load_len, active_len, sub_len, job_len, desc_len;
316         const UnitInfo *u;
317         unsigned n_shown = 0;
318         int job_count = 0;
319
320         max_id_len = sizeof("UNIT")-1;
321         load_len = sizeof("LOAD")-1;
322         active_len = sizeof("ACTIVE")-1;
323         sub_len = sizeof("SUB")-1;
324         job_len = sizeof("JOB")-1;
325         desc_len = 0;
326
327         for (u = unit_infos; u < unit_infos + c; u++) {
328                 if (!output_show_unit(u, patterns))
329                         continue;
330
331                 max_id_len = MAX(max_id_len, strlen(u->id));
332                 load_len = MAX(load_len, strlen(u->load_state));
333                 active_len = MAX(active_len, strlen(u->active_state));
334                 sub_len = MAX(sub_len, strlen(u->sub_state));
335
336                 if (u->job_id != 0) {
337                         job_len = MAX(job_len, strlen(u->job_type));
338                         job_count++;
339                 }
340         }
341
342         if (!arg_full && original_stdout_is_tty) {
343                 unsigned basic_len;
344
345                 id_len = MIN(max_id_len, 25u);
346                 basic_len = 5 + id_len + 5 + active_len + sub_len;
347
348                 if (job_count)
349                         basic_len += job_len + 1;
350
351                 if (basic_len < (unsigned) columns()) {
352                         unsigned extra_len, incr;
353                         extra_len = columns() - basic_len;
354
355                         /* Either UNIT already got 25, or is fully satisfied.
356                          * Grant up to 25 to DESC now. */
357                         incr = MIN(extra_len, 25u);
358                         desc_len += incr;
359                         extra_len -= incr;
360
361                         /* split the remaining space between UNIT and DESC,
362                          * but do not give UNIT more than it needs. */
363                         if (extra_len > 0) {
364                                 incr = MIN(extra_len / 2, max_id_len - id_len);
365                                 id_len += incr;
366                                 desc_len += extra_len - incr;
367                         }
368                 }
369         } else
370                 id_len = max_id_len;
371
372         for (u = unit_infos; u < unit_infos + c; u++) {
373                 _cleanup_free_ char *e = NULL;
374                 const char *on_loaded, *off_loaded, *on = "";
375                 const char *on_active, *off_active, *off = "";
376
377                 if (!output_show_unit(u, patterns))
378                         continue;
379
380                 if (!n_shown && !arg_no_legend) {
381                         printf("%-*s %-*s %-*s %-*s ",
382                                id_len, "UNIT",
383                                load_len, "LOAD",
384                                active_len, "ACTIVE",
385                                sub_len, "SUB");
386
387                         if (job_count)
388                                 printf("%-*s ", job_len, "JOB");
389
390                         if (!arg_full && arg_no_pager)
391                                 printf("%.*s\n", desc_len, "DESCRIPTION");
392                         else
393                                 printf("%s\n", "DESCRIPTION");
394                 }
395
396                 n_shown++;
397
398                 if (streq(u->load_state, "error") ||
399                     streq(u->load_state, "not-found")) {
400                         on_loaded = on = ansi_highlight_red();
401                         off_loaded = off = ansi_highlight_off();
402                 } else
403                         on_loaded = off_loaded = "";
404
405                 if (streq(u->active_state, "failed")) {
406                         on_active = on = ansi_highlight_red();
407                         off_active = off = ansi_highlight_off();
408                 } else
409                         on_active = off_active = "";
410
411                 e = arg_full ? NULL : ellipsize(u->id, id_len, 33);
412
413                 printf("%s%-*s%s %s%-*s%s %s%-*s %-*s%s %-*s",
414                        on, id_len, e ? e : u->id, off,
415                        on_loaded, load_len, u->load_state, off_loaded,
416                        on_active, active_len, u->active_state,
417                        sub_len, u->sub_state, off_active,
418                        job_count ? job_len + 1 : 0, u->job_id ? u->job_type : "");
419
420                 if (desc_len > 0)
421                         printf("%.*s\n", desc_len, u->description);
422                 else
423                         printf("%s\n", u->description);
424         }
425
426         if (!arg_no_legend) {
427                 const char *on, *off;
428
429                 if (n_shown) {
430                         printf("\nLOAD   = Reflects whether the unit definition was properly loaded.\n"
431                                "ACTIVE = The high-level unit activation state, i.e. generalization of SUB.\n"
432                                "SUB    = The low-level unit activation state, values depend on unit type.\n");
433                         if (job_count)
434                                 printf("JOB    = Pending job for the unit.\n");
435                         puts("");
436                         on = ansi_highlight();
437                         off = ansi_highlight_off();
438                 } else {
439                         on = ansi_highlight_red();
440                         off = ansi_highlight_off();
441                 }
442
443                 if (arg_all)
444                         printf("%s%u loaded units listed.%s\n"
445                                "To show all installed unit files use 'systemctl list-unit-files'.\n",
446                                on, n_shown, off);
447                 else
448                         printf("%s%u loaded units listed.%s Pass --all to see loaded but inactive units, too.\n"
449                                "To show all installed unit files use 'systemctl list-unit-files'.\n",
450                                on, n_shown, off);
451         }
452 }
453
454 static int get_unit_list(
455                 sd_bus *bus,
456                 sd_bus_message **_reply,
457                 UnitInfo **_unit_infos) {
458
459         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
460         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
461         _cleanup_free_ UnitInfo *unit_infos = NULL;
462         size_t size = 0;
463         int r, c = 0;
464         UnitInfo u;
465
466         assert(bus);
467         assert(_reply);
468         assert(_unit_infos);
469
470         r = sd_bus_call_method(
471                         bus,
472                         "org.freedesktop.systemd1",
473                         "/org/freedesktop/systemd1",
474                         "org.freedesktop.systemd1.Manager",
475                         "ListUnits",
476                         &error,
477                         &reply,
478                         NULL);
479         if (r < 0) {
480                 log_error("Failed to list units: %s", bus_error_message(&error, r));
481                 return r;
482         }
483
484         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssssouso)");
485         if (r < 0)
486                 return bus_log_parse_error(r);
487
488         while ((r = bus_parse_unit_info(reply, &u)) > 0) {
489
490                 if (!GREEDY_REALLOC(unit_infos, size, c+1))
491                         return log_oom();
492
493                 unit_infos[c++] = u;
494         }
495         if (r < 0)
496                 return bus_log_parse_error(r);
497
498         r = sd_bus_message_exit_container(reply);
499         if (r < 0)
500                 return bus_log_parse_error(r);
501
502         *_reply = reply;
503         reply = NULL;
504
505         *_unit_infos = unit_infos;
506         unit_infos = NULL;
507
508         return c;
509 }
510
511 static int list_units(sd_bus *bus, char **args) {
512         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
513         _cleanup_free_ UnitInfo *unit_infos = NULL;
514         int r;
515
516         pager_open_if_enabled();
517
518         r = get_unit_list(bus, &reply, &unit_infos);
519         if (r < 0)
520                 return r;
521
522         qsort_safe(unit_infos, r, sizeof(UnitInfo), compare_unit_info);
523         output_units_list(unit_infos, r, strv_skip_first(args));
524
525         return 0;
526 }
527
528 static int get_triggered_units(
529                 sd_bus *bus,
530                 const char* path,
531                 char*** ret) {
532
533         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
534         int r;
535
536         r = sd_bus_get_property_strv(
537                         bus,
538                         "org.freedesktop.systemd1",
539                         path,
540                         "org.freedesktop.systemd1.Unit",
541                         "Triggers",
542                         &error,
543                         ret);
544
545         if (r < 0)
546                 log_error("Failed to determine triggers: %s", bus_error_message(&error, r));
547
548         return 0;
549 }
550
551 static int get_listening(
552                 sd_bus *bus,
553                 const char* unit_path,
554                 char*** listening) {
555
556         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
557         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
558         const char *type, *path;
559         int r, n = 0;
560
561         r = sd_bus_get_property(
562                         bus,
563                         "org.freedesktop.systemd1",
564                         unit_path,
565                         "org.freedesktop.systemd1.Socket",
566                         "Listen",
567                         &error,
568                         &reply,
569                         "a(ss)");
570         if (r < 0) {
571                 log_error("Failed to get list of listening sockets: %s", bus_error_message(&error, r));
572                 return r;
573         }
574
575         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ss)");
576         if (r < 0)
577                 return bus_log_parse_error(r);
578
579         while ((r = sd_bus_message_read(reply, "(ss)", &type, &path)) > 0) {
580
581                 r = strv_extend(listening, type);
582                 if (r < 0)
583                         return log_oom();
584
585                 r = strv_extend(listening, path);
586                 if (r < 0)
587                         return log_oom();
588
589                 n++;
590         }
591         if (r < 0)
592                 return bus_log_parse_error(r);
593
594         r = sd_bus_message_exit_container(reply);
595         if (r < 0)
596                 return bus_log_parse_error(r);
597
598         return n;
599 }
600
601 struct socket_info {
602         const char* id;
603
604         char* type;
605         char* path;
606
607         /* Note: triggered is a list here, although it almost certainly
608          * will always be one unit. Nevertheless, dbus API allows for multiple
609          * values, so let's follow that.*/
610         char** triggered;
611
612         /* The strv above is shared. free is set only in the first one. */
613         bool own_triggered;
614 };
615
616 static int socket_info_compare(const struct socket_info *a, const struct socket_info *b) {
617         int o;
618
619         assert(a);
620         assert(b);
621
622         o = strcmp(a->path, b->path);
623         if (o == 0)
624                 o = strcmp(a->type, b->type);
625
626         return o;
627 }
628
629 static int output_sockets_list(struct socket_info *socket_infos, unsigned cs) {
630         struct socket_info *s;
631         unsigned pathlen = sizeof("LISTEN") - 1,
632                 typelen = (sizeof("TYPE") - 1) * arg_show_types,
633                 socklen = sizeof("UNIT") - 1,
634                 servlen = sizeof("ACTIVATES") - 1;
635         const char *on, *off;
636
637         for (s = socket_infos; s < socket_infos + cs; s++) {
638                 unsigned tmp = 0;
639                 char **a;
640
641                 socklen = MAX(socklen, strlen(s->id));
642                 if (arg_show_types)
643                         typelen = MAX(typelen, strlen(s->type));
644                 pathlen = MAX(pathlen, strlen(s->path));
645
646                 STRV_FOREACH(a, s->triggered)
647                         tmp += strlen(*a) + 2*(a != s->triggered);
648                 servlen = MAX(servlen, tmp);
649         }
650
651         if (cs) {
652                 if (!arg_no_legend)
653                         printf("%-*s %-*.*s%-*s %s\n",
654                                pathlen, "LISTEN",
655                                typelen + arg_show_types, typelen + arg_show_types, "TYPE ",
656                                socklen, "UNIT",
657                                "ACTIVATES");
658
659                 for (s = socket_infos; s < socket_infos + cs; s++) {
660                         char **a;
661
662                         if (arg_show_types)
663                                 printf("%-*s %-*s %-*s",
664                                        pathlen, s->path, typelen, s->type, socklen, s->id);
665                         else
666                                 printf("%-*s %-*s",
667                                        pathlen, s->path, socklen, s->id);
668                         STRV_FOREACH(a, s->triggered)
669                                 printf("%s %s",
670                                        a == s->triggered ? "" : ",", *a);
671                         printf("\n");
672                 }
673
674                 on = ansi_highlight();
675                 off = ansi_highlight_off();
676                 if (!arg_no_legend)
677                         printf("\n");
678         } else {
679                 on = ansi_highlight_red();
680                 off = ansi_highlight_off();
681         }
682
683         if (!arg_no_legend) {
684                 printf("%s%u sockets listed.%s\n", on, cs, off);
685                 if (!arg_all)
686                         printf("Pass --all to see loaded but inactive sockets, too.\n");
687         }
688
689         return 0;
690 }
691
692 static int list_sockets(sd_bus *bus, char **args) {
693         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
694         _cleanup_free_ UnitInfo *unit_infos = NULL;
695         struct socket_info *socket_infos = NULL;
696         const UnitInfo *u;
697         struct socket_info *s;
698         unsigned cs = 0;
699         size_t size = 0;
700         int r = 0, n;
701
702         pager_open_if_enabled();
703
704         n = get_unit_list(bus, &reply, &unit_infos);
705         if (n < 0)
706                 return n;
707
708         for (u = unit_infos; u < unit_infos + n; u++) {
709                 _cleanup_strv_free_ char **listening = NULL, **triggered = NULL;
710                 int i, c;
711
712                 if (!output_show_unit(u, strv_skip_first(args)))
713                         continue;
714
715                 if (!endswith(u->id, ".socket"))
716                         continue;
717
718                 r = get_triggered_units(bus, u->unit_path, &triggered);
719                 if (r < 0)
720                         goto cleanup;
721
722                 c = get_listening(bus, u->unit_path, &listening);
723                 if (c < 0) {
724                         r = c;
725                         goto cleanup;
726                 }
727
728                 if (!GREEDY_REALLOC(socket_infos, size, cs + c)) {
729                         r = log_oom();
730                         goto cleanup;
731                 }
732
733                 for (i = 0; i < c; i++)
734                         socket_infos[cs + i] = (struct socket_info) {
735                                 .id = u->id,
736                                 .type = listening[i*2],
737                                 .path = listening[i*2 + 1],
738                                 .triggered = triggered,
739                                 .own_triggered = i==0,
740                         };
741
742                 /* from this point on we will cleanup those socket_infos */
743                 cs += c;
744                 free(listening);
745                 listening = triggered = NULL; /* avoid cleanup */
746         }
747
748         qsort_safe(socket_infos, cs, sizeof(struct socket_info),
749                    (__compar_fn_t) socket_info_compare);
750
751         output_sockets_list(socket_infos, cs);
752
753  cleanup:
754         assert(cs == 0 || socket_infos);
755         for (s = socket_infos; s < socket_infos + cs; s++) {
756                 free(s->type);
757                 free(s->path);
758                 if (s->own_triggered)
759                         strv_free(s->triggered);
760         }
761         free(socket_infos);
762
763         return r;
764 }
765
766 static int get_next_elapse(
767                 sd_bus *bus,
768                 const char *path,
769                 dual_timestamp *next) {
770
771         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
772         dual_timestamp t;
773         int r;
774
775         assert(bus);
776         assert(path);
777         assert(next);
778
779         r = sd_bus_get_property_trivial(
780                         bus,
781                         "org.freedesktop.systemd1",
782                         path,
783                         "org.freedesktop.systemd1.Timer",
784                         "NextElapseUSecMonotonic",
785                         &error,
786                         't',
787                         &t.monotonic);
788         if (r < 0) {
789                 log_error("Failed to get next elapsation time: %s", bus_error_message(&error, r));
790                 return r;
791         }
792
793         r = sd_bus_get_property_trivial(
794                         bus,
795                         "org.freedesktop.systemd1",
796                         path,
797                         "org.freedesktop.systemd1.Timer",
798                         "NextElapseUSecRealtime",
799                         &error,
800                         't',
801                         &t.realtime);
802         if (r < 0) {
803                 log_error("Failed to get next elapsation time: %s", bus_error_message(&error, r));
804                 return r;
805         }
806
807         *next = t;
808         return 0;
809 }
810
811 struct timer_info {
812         const char* id;
813         usec_t next_elapse;
814         char** triggered;
815 };
816
817 static int timer_info_compare(const struct timer_info *a, const struct timer_info *b) {
818         assert(a);
819         assert(b);
820
821         if (a->next_elapse < b->next_elapse)
822                 return -1;
823         if (a->next_elapse > b->next_elapse)
824                 return 1;
825
826         return strcmp(a->id, b->id);
827 }
828
829 static int output_timers_list(struct timer_info *timer_infos, unsigned n) {
830         struct timer_info *t;
831         unsigned
832                 nextlen = sizeof("NEXT") - 1,
833                 leftlen = sizeof("LEFT") - 1,
834                 unitlen = sizeof("UNIT") - 1,
835                 activatelen = sizeof("ACTIVATES") - 1;
836
837         const char *on, *off;
838
839         assert(timer_infos || n == 0);
840
841         for (t = timer_infos; t < timer_infos + n; t++) {
842                 unsigned ul = 0;
843                 char **a;
844
845                 if (t->next_elapse > 0) {
846                         char tstamp[FORMAT_TIMESTAMP_MAX] = "", trel[FORMAT_TIMESTAMP_RELATIVE_MAX] = "";
847
848                         format_timestamp(tstamp, sizeof(tstamp), t->next_elapse);
849                         nextlen = MAX(nextlen, strlen(tstamp) + 1);
850
851                         format_timestamp_relative(trel, sizeof(trel), t->next_elapse);
852                         leftlen = MAX(leftlen, strlen(trel));
853                 }
854
855                 unitlen = MAX(unitlen, strlen(t->id));
856
857                 STRV_FOREACH(a, t->triggered)
858                         ul += strlen(*a) + 2*(a != t->triggered);
859                 activatelen = MAX(activatelen, ul);
860         }
861
862         if (n > 0) {
863                 if (!arg_no_legend)
864                         printf("%-*s %-*s %-*s %s\n",
865                                nextlen, "NEXT",
866                                leftlen, "LEFT",
867                                unitlen, "UNIT",
868                                         "ACTIVATES");
869
870                 for (t = timer_infos; t < timer_infos + n; t++) {
871                         char tstamp[FORMAT_TIMESTAMP_MAX] = "n/a", trel[FORMAT_TIMESTAMP_RELATIVE_MAX] = "n/a";
872                         char **a;
873
874                         format_timestamp(tstamp, sizeof(tstamp), t->next_elapse);
875                         format_timestamp_relative(trel, sizeof(trel), t->next_elapse);
876
877                         printf("%-*s %-*s %-*s",
878                                nextlen, tstamp, leftlen, trel, unitlen, t->id);
879
880                         STRV_FOREACH(a, t->triggered)
881                                 printf("%s %s",
882                                        a == t->triggered ? "" : ",", *a);
883                         printf("\n");
884                 }
885
886                 on = ansi_highlight();
887                 off = ansi_highlight_off();
888                 if (!arg_no_legend)
889                         printf("\n");
890         } else {
891                 on = ansi_highlight_red();
892                 off = ansi_highlight_off();
893         }
894
895         if (!arg_no_legend) {
896                 printf("%s%u timers listed.%s\n", on, n, off);
897                 if (!arg_all)
898                         printf("Pass --all to see loaded but inactive timers, too.\n");
899         }
900
901         return 0;
902 }
903
904 static int list_timers(sd_bus *bus, char **args) {
905
906         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
907         _cleanup_free_ struct timer_info *timer_infos = NULL;
908         _cleanup_free_ UnitInfo *unit_infos = NULL;
909         struct timer_info *t;
910         const UnitInfo *u;
911         size_t size = 0;
912         int n, c = 0;
913         dual_timestamp nw;
914         int r = 0;
915
916         pager_open_if_enabled();
917
918         n = get_unit_list(bus, &reply, &unit_infos);
919         if (n < 0)
920                 return n;
921
922         dual_timestamp_get(&nw);
923
924         for (u = unit_infos; u < unit_infos + n; u++) {
925                 _cleanup_strv_free_ char **triggered = NULL;
926                 dual_timestamp next;
927                 usec_t m;
928
929                 if (!output_show_unit(u, strv_skip_first(args)))
930                         continue;
931
932                 if (!endswith(u->id, ".timer"))
933                         continue;
934
935                 r = get_triggered_units(bus, u->unit_path, &triggered);
936                 if (r < 0)
937                         goto cleanup;
938
939                 r = get_next_elapse(bus, u->unit_path, &next);
940                 if (r < 0)
941                         goto cleanup;
942
943                 if (next.monotonic != (usec_t) -1 && next.monotonic > 0) {
944                         usec_t converted;
945
946                         if (next.monotonic > nw.monotonic)
947                                 converted = nw.realtime + (next.monotonic - nw.monotonic);
948                         else
949                                 converted = nw.realtime - (nw.monotonic - next.monotonic);
950
951                         if (next.realtime != (usec_t) -1 && next.realtime > 0)
952                                 m = MIN(converted, next.realtime);
953                         else
954                                 m = converted;
955                 } else
956                         m = next.realtime;
957
958                 if (!GREEDY_REALLOC(timer_infos, size, c+1)) {
959                         r = log_oom();
960                         goto cleanup;
961                 }
962
963                 timer_infos[c++] = (struct timer_info) {
964                         .id = u->id,
965                         .next_elapse = m,
966                         .triggered = triggered,
967                 };
968
969                 triggered = NULL; /* avoid cleanup */
970         }
971
972         qsort_safe(timer_infos, c, sizeof(struct timer_info),
973                    (__compar_fn_t) timer_info_compare);
974
975         output_timers_list(timer_infos, c);
976
977  cleanup:
978         for (t = timer_infos; t < timer_infos + c; t++)
979                 strv_free(t->triggered);
980
981         return r;
982 }
983
984 static int compare_unit_file_list(const void *a, const void *b) {
985         const char *d1, *d2;
986         const UnitFileList *u = a, *v = b;
987
988         d1 = strrchr(u->path, '.');
989         d2 = strrchr(v->path, '.');
990
991         if (d1 && d2) {
992                 int r;
993
994                 r = strcasecmp(d1, d2);
995                 if (r != 0)
996                         return r;
997         }
998
999         return strcasecmp(basename(u->path), basename(v->path));
1000 }
1001
1002 static bool output_show_unit_file(const UnitFileList *u, char **patterns) {
1003         const char *dot;
1004
1005         if (!strv_isempty(patterns)) {
1006                 char **pattern;
1007
1008                 STRV_FOREACH(pattern, patterns)
1009                         if (fnmatch(*pattern, basename(u->path), FNM_NOESCAPE) == 0)
1010                                 return true;
1011                 return false;
1012         }
1013
1014         return !arg_types || ((dot = strrchr(u->path, '.')) && strv_find(arg_types, dot+1));
1015 }
1016
1017 static void output_unit_file_list(const UnitFileList *units, unsigned c, char **patterns) {
1018         unsigned max_id_len, id_cols, state_cols, n_shown = 0;
1019         const UnitFileList *u;
1020
1021         max_id_len = sizeof("UNIT FILE")-1;
1022         state_cols = sizeof("STATE")-1;
1023
1024         for (u = units; u < units + c; u++) {
1025                 if (!output_show_unit_file(u, patterns))
1026                         continue;
1027
1028                 max_id_len = MAX(max_id_len, strlen(basename(u->path)));
1029                 state_cols = MAX(state_cols, strlen(unit_file_state_to_string(u->state)));
1030         }
1031
1032         if (!arg_full) {
1033                 unsigned basic_cols;
1034
1035                 id_cols = MIN(max_id_len, 25u);
1036                 basic_cols = 1 + id_cols + state_cols;
1037                 if (basic_cols < (unsigned) columns())
1038                         id_cols += MIN(columns() - basic_cols, max_id_len - id_cols);
1039         } else
1040                 id_cols = max_id_len;
1041
1042         if (!arg_no_legend)
1043                 printf("%-*s %-*s\n",
1044                        id_cols, "UNIT FILE",
1045                        state_cols, "STATE");
1046
1047         for (u = units; u < units + c; u++) {
1048                 _cleanup_free_ char *e = NULL;
1049                 const char *on, *off;
1050                 const char *id;
1051
1052                 if (!output_show_unit_file(u, patterns))
1053                         continue;
1054
1055                 n_shown++;
1056
1057                 if (u->state == UNIT_FILE_MASKED ||
1058                     u->state == UNIT_FILE_MASKED_RUNTIME ||
1059                     u->state == UNIT_FILE_DISABLED ||
1060                     u->state == UNIT_FILE_INVALID) {
1061                         on  = ansi_highlight_red();
1062                         off = ansi_highlight_off();
1063                 } else if (u->state == UNIT_FILE_ENABLED) {
1064                         on  = ansi_highlight_green();
1065                         off = ansi_highlight_off();
1066                 } else
1067                         on = off = "";
1068
1069                 id = basename(u->path);
1070
1071                 e = arg_full ? NULL : ellipsize(id, id_cols, 33);
1072
1073                 printf("%-*s %s%-*s%s\n",
1074                        id_cols, e ? e : id,
1075                        on, state_cols, unit_file_state_to_string(u->state), off);
1076         }
1077
1078         if (!arg_no_legend)
1079                 printf("\n%u unit files listed.\n", n_shown);
1080 }
1081
1082 static int list_unit_files(sd_bus *bus, char **args) {
1083         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1084         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1085         _cleanup_free_ UnitFileList *units = NULL;
1086         unsigned c = 0;
1087         const char *state;
1088         char *path;
1089         int r;
1090
1091         pager_open_if_enabled();
1092
1093         if (avoid_bus()) {
1094                 Hashmap *h;
1095                 UnitFileList *u;
1096                 Iterator i;
1097                 unsigned n_units;
1098
1099                 h = hashmap_new(string_hash_func, string_compare_func);
1100                 if (!h)
1101                         return log_oom();
1102
1103                 r = unit_file_get_list(arg_scope, arg_root, h);
1104                 if (r < 0) {
1105                         unit_file_list_free(h);
1106                         log_error("Failed to get unit file list: %s", strerror(-r));
1107                         return r;
1108                 }
1109
1110                 n_units = hashmap_size(h);
1111                 units = new(UnitFileList, n_units);
1112                 if (!units) {
1113                         unit_file_list_free(h);
1114                         return log_oom();
1115                 }
1116
1117                 HASHMAP_FOREACH(u, h, i) {
1118                         memcpy(units + c++, u, sizeof(UnitFileList));
1119                         free(u);
1120                 }
1121
1122                 assert(c == n_units);
1123                 hashmap_free(h);
1124         } else {
1125                 size_t size = 0;
1126
1127                 r = sd_bus_call_method(
1128                                 bus,
1129                                 "org.freedesktop.systemd1",
1130                                 "/org/freedesktop/systemd1",
1131                                 "org.freedesktop.systemd1.Manager",
1132                                 "ListUnitFiles",
1133                                 &error,
1134                                 &reply,
1135                                 NULL);
1136                 if (r < 0) {
1137                         log_error("Failed to list unit files: %s", bus_error_message(&error, r));
1138                         return r;
1139                 }
1140
1141                 r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ss)");
1142                 if (r < 0)
1143                         return bus_log_parse_error(r);
1144
1145                 while ((r = sd_bus_message_read(reply, "(ss)", &path, &state)) > 0) {
1146
1147                         if (!GREEDY_REALLOC(units, size, c + 1))
1148                                 return log_oom();
1149
1150                         units[c++] = (struct UnitFileList) {
1151                                 path,
1152                                 unit_file_state_from_string(state)
1153                         };
1154                 }
1155                 if (r < 0)
1156                         return bus_log_parse_error(r);
1157
1158                 r = sd_bus_message_exit_container(reply);
1159                 if (r < 0)
1160                         return bus_log_parse_error(r);
1161         }
1162
1163         if (c > 0) {
1164                 qsort(units, c, sizeof(UnitFileList), compare_unit_file_list);
1165                 output_unit_file_list(units, c, strv_skip_first(args));
1166         }
1167
1168         return 0;
1169 }
1170
1171 static int list_dependencies_print(const char *name, int level, unsigned int branches, bool last) {
1172         _cleanup_free_ char *n = NULL;
1173         size_t max_len = MAX(columns(),20u);
1174         size_t len = 0;
1175         int i;
1176
1177         if (!arg_plain) {
1178
1179                 for (i = level - 1; i >= 0; i--) {
1180                         len += 2;
1181                         if (len > max_len - 3 && !arg_full) {
1182                                 printf("%s...\n",max_len % 2 ? "" : " ");
1183                                 return 0;
1184                         }
1185                         printf("%s", draw_special_char(branches & (1 << i) ? DRAW_TREE_VERT : DRAW_TREE_SPACE));
1186                 }
1187                 len += 2;
1188
1189                 if (len > max_len - 3 && !arg_full) {
1190                         printf("%s...\n",max_len % 2 ? "" : " ");
1191                         return 0;
1192                 }
1193
1194                 printf("%s", draw_special_char(last ? DRAW_TREE_RIGHT : DRAW_TREE_BRANCH));
1195         }
1196
1197         if (arg_full){
1198                 printf("%s\n", name);
1199                 return 0;
1200         }
1201
1202         n = ellipsize(name, max_len-len, 100);
1203         if (!n)
1204                 return log_oom();
1205
1206         printf("%s\n", n);
1207         return 0;
1208 }
1209
1210 static int list_dependencies_get_dependencies(sd_bus *bus, const char *name, char ***deps) {
1211
1212         static const char *dependencies[_DEPENDENCY_MAX] = {
1213                 [DEPENDENCY_FORWARD] = "Requires\0"
1214                                        "RequiresOverridable\0"
1215                                        "Requisite\0"
1216                                        "RequisiteOverridable\0"
1217                                        "Wants\0",
1218                 [DEPENDENCY_REVERSE] = "RequiredBy\0"
1219                                        "RequiredByOverridable\0"
1220                                        "WantedBy\0"
1221                                        "PartOf\0",
1222                 [DEPENDENCY_AFTER]   = "After\0",
1223                 [DEPENDENCY_BEFORE]  = "Before\0",
1224         };
1225
1226         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1227         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1228         _cleanup_strv_free_ char **ret = NULL;
1229         _cleanup_free_ char *path = NULL;
1230         int r;
1231
1232         assert(bus);
1233         assert(name);
1234         assert(deps);
1235         assert_cc(ELEMENTSOF(dependencies) == _DEPENDENCY_MAX);
1236
1237         path = unit_dbus_path_from_name(name);
1238         if (!path)
1239                 return log_oom();
1240
1241         r = sd_bus_call_method(
1242                         bus,
1243                         "org.freedesktop.systemd1",
1244                         path,
1245                         "org.freedesktop.DBus.Properties",
1246                         "GetAll",
1247                         &error,
1248                         &reply,
1249                         "s", "org.freedesktop.systemd1.Unit");
1250         if (r < 0) {
1251                 log_error("Failed to get properties of %s: %s", name, bus_error_message(&error, r));
1252                 return r;
1253         }
1254
1255         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "{sv}");
1256         if (r < 0)
1257                 return bus_log_parse_error(r);
1258
1259         while ((r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) {
1260                 const char *prop;
1261
1262                 r = sd_bus_message_read(reply, "s", &prop);
1263                 if (r < 0)
1264                         return bus_log_parse_error(r);
1265
1266                 if (!nulstr_contains(dependencies[arg_dependency], prop)) {
1267                         r = sd_bus_message_skip(reply, "v");
1268                         if (r < 0)
1269                                 return bus_log_parse_error(r);
1270                 } else {
1271
1272                         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_VARIANT, "as");
1273                         if (r < 0)
1274                                 return bus_log_parse_error(r);
1275
1276                         r = bus_message_read_strv_extend(reply, &ret);
1277                         if (r < 0)
1278                                 return bus_log_parse_error(r);
1279
1280                         r = sd_bus_message_exit_container(reply);
1281                         if (r < 0)
1282                                 return bus_log_parse_error(r);
1283                 }
1284
1285                 r = sd_bus_message_exit_container(reply);
1286                 if (r < 0)
1287                         return bus_log_parse_error(r);
1288
1289         }
1290         if (r < 0)
1291                 return bus_log_parse_error(r);
1292
1293         r = sd_bus_message_exit_container(reply);
1294         if (r < 0)
1295                 return bus_log_parse_error(r);
1296
1297         *deps = ret;
1298         ret = NULL;
1299
1300         return 0;
1301 }
1302
1303 static int list_dependencies_compare(const void *_a, const void *_b) {
1304         const char **a = (const char**) _a, **b = (const char**) _b;
1305
1306         if (unit_name_to_type(*a) == UNIT_TARGET && unit_name_to_type(*b) != UNIT_TARGET)
1307                 return 1;
1308         if (unit_name_to_type(*a) != UNIT_TARGET && unit_name_to_type(*b) == UNIT_TARGET)
1309                 return -1;
1310
1311         return strcasecmp(*a, *b);
1312 }
1313
1314 static int list_dependencies_one(
1315                 sd_bus *bus,
1316                 const char *name,
1317                 int level,
1318                 char ***units,
1319                 unsigned int branches) {
1320
1321         _cleanup_strv_free_ char **deps = NULL, **u;
1322         char **c;
1323         int r = 0;
1324
1325         assert(bus);
1326         assert(name);
1327         assert(units);
1328
1329         u = strv_append(*units, name);
1330         if (!u)
1331                 return log_oom();
1332
1333         r = list_dependencies_get_dependencies(bus, name, &deps);
1334         if (r < 0)
1335                 return r;
1336
1337         qsort_safe(deps, strv_length(deps), sizeof (char*), list_dependencies_compare);
1338
1339         STRV_FOREACH(c, deps) {
1340                 int state;
1341
1342                 if (strv_contains(u, *c)) {
1343                         if (!arg_plain) {
1344                                 r = list_dependencies_print("...", level + 1, (branches << 1) | (c[1] == NULL ? 0 : 1), 1);
1345                                 if (r < 0)
1346                                         return r;
1347                         }
1348                         continue;
1349                 }
1350
1351                 state = check_one_unit(bus, *c, "activating\0active\0reloading\0", true);
1352                 if (state > 0)
1353                         printf("%s%s%s", ansi_highlight_green(), draw_special_char(DRAW_BLACK_CIRCLE), ansi_highlight_off());
1354                 else
1355                         printf("%s%s%s", ansi_highlight_red(), draw_special_char(DRAW_BLACK_CIRCLE), ansi_highlight_off());
1356
1357                 r = list_dependencies_print(*c, level, branches, c[1] == NULL);
1358                 if (r < 0)
1359                         return r;
1360
1361                 if (arg_all || unit_name_to_type(*c) == UNIT_TARGET) {
1362                        r = list_dependencies_one(bus, *c, level + 1, &u, (branches << 1) | (c[1] == NULL ? 0 : 1));
1363                        if (r < 0)
1364                                return r;
1365                 }
1366         }
1367
1368         if (arg_plain) {
1369                 strv_free(*units);
1370                 *units = u;
1371                 u = NULL;
1372         }
1373
1374         return 0;
1375 }
1376
1377 static int list_dependencies(sd_bus *bus, char **args) {
1378         _cleanup_strv_free_ char **units = NULL;
1379         _cleanup_free_ char *unit = NULL;
1380         const char *u;
1381
1382         assert(bus);
1383
1384         if (args[1]) {
1385                 unit = unit_name_mangle(args[1]);
1386                 if (!unit)
1387                         return log_oom();
1388                 u = unit;
1389         } else
1390                 u = SPECIAL_DEFAULT_TARGET;
1391
1392         pager_open_if_enabled();
1393
1394         puts(u);
1395
1396         return list_dependencies_one(bus, u, 0, &units, 0);
1397 }
1398
1399 static int get_default(sd_bus *bus, char **args) {
1400         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1401         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1402         _cleanup_free_ char *_path = NULL;
1403         const char *path;
1404         int r;
1405
1406         if (!bus || avoid_bus()) {
1407                 r = unit_file_get_default(arg_scope, arg_root, &_path);
1408                 if (r < 0) {
1409                         log_error("Failed to get default target: %s", strerror(-r));
1410                         return r;
1411                 }
1412                 path = _path;
1413
1414         } else {
1415                 r = sd_bus_call_method(
1416                                 bus,
1417                                 "org.freedesktop.systemd1",
1418                                 "/org/freedesktop/systemd1",
1419                                 "org.freedesktop.systemd1.Manager",
1420                                 "GetDefaultTarget",
1421                                 &error,
1422                                 &reply,
1423                                 NULL);
1424                 if (r < 0) {
1425                         log_error("Failed to get default target: %s", bus_error_message(&error, -r));
1426                         return r;
1427                 }
1428
1429                 r = sd_bus_message_read(reply, "s", &path);
1430                 if (r < 0)
1431                         return bus_log_parse_error(r);
1432         }
1433
1434         if (path)
1435                 printf("%s\n", path);
1436
1437         return 0;
1438 }
1439
1440 static void dump_unit_file_changes(const UnitFileChange *changes, unsigned n_changes) {
1441         unsigned i;
1442
1443         assert(changes || n_changes == 0);
1444
1445         for (i = 0; i < n_changes; i++) {
1446                 if (changes[i].type == UNIT_FILE_SYMLINK)
1447                         log_info("ln -s '%s' '%s'", changes[i].source, changes[i].path);
1448                 else
1449                         log_info("rm '%s'", changes[i].path);
1450         }
1451 }
1452
1453 static int deserialize_and_dump_unit_file_changes(sd_bus_message *m) {
1454         const char *type, *path, *source;
1455         int r;
1456
1457         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sss)");
1458         if (r < 0)
1459                 return bus_log_parse_error(r);
1460
1461         while ((r = sd_bus_message_read(m, "(sss)", &type, &path, &source)) > 0) {
1462                 if (!arg_quiet) {
1463                         if (streq(type, "symlink"))
1464                                 log_info("ln -s '%s' '%s'", source, path);
1465                         else
1466                                 log_info("rm '%s'", path);
1467                 }
1468         }
1469         if (r < 0)
1470                 return bus_log_parse_error(r);
1471
1472         r = sd_bus_message_exit_container(m);
1473         if (r < 0)
1474                 return bus_log_parse_error(r);
1475
1476         return 0;
1477 }
1478
1479 static int set_default(sd_bus *bus, char **args) {
1480         _cleanup_free_ char *unit = NULL;
1481         UnitFileChange *changes = NULL;
1482         unsigned n_changes = 0;
1483         int r;
1484
1485         unit = unit_name_mangle_with_suffix(args[1], ".target");
1486         if (!unit)
1487                 return log_oom();
1488
1489         if (!bus || avoid_bus()) {
1490                 r = unit_file_set_default(arg_scope, arg_root, unit, arg_force, &changes, &n_changes);
1491                 if (r < 0) {
1492                         log_error("Failed to set default target: %s", strerror(-r));
1493                         return r;
1494                 }
1495
1496                 if (!arg_quiet)
1497                         dump_unit_file_changes(changes, n_changes);
1498
1499                 r = 0;
1500         } else {
1501                 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1502                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1503
1504                 r = sd_bus_call_method(
1505                                 bus,
1506                                 "org.freedesktop.systemd1",
1507                                 "/org/freedesktop/systemd1",
1508                                 "org.freedesktop.systemd1.Manager",
1509                                 "SetDefaultTarget",
1510                                 &error,
1511                                 &reply,
1512                                 "sb", unit, arg_force);
1513                 if (r < 0) {
1514                         log_error("Failed to set default target: %s", bus_error_message(&error, -r));
1515                         return r;
1516                 }
1517
1518                 r = deserialize_and_dump_unit_file_changes(reply);
1519                 if (r < 0)
1520                         return r;
1521
1522                 /* Try to reload if enabeld */
1523                 if (!arg_no_reload)
1524                         r = daemon_reload(bus, args);
1525                 else
1526                         r = 0;
1527         }
1528
1529         unit_file_changes_free(changes, n_changes);
1530
1531         return r;
1532 }
1533
1534 struct job_info {
1535         uint32_t id;
1536         const char *name, *type, *state;
1537 };
1538
1539 static void output_jobs_list(const struct job_info* jobs, unsigned n, bool skipped) {
1540         unsigned id_len, unit_len, type_len, state_len;
1541         const struct job_info *j;
1542         const char *on, *off;
1543         bool shorten = false;
1544
1545         assert(n == 0 || jobs);
1546
1547         if (n == 0) {
1548                 on = ansi_highlight_green();
1549                 off = ansi_highlight_off();
1550
1551                 printf("%sNo jobs %s.%s\n", on, skipped ? "listed" : "running", off);
1552                 return;
1553         }
1554
1555         pager_open_if_enabled();
1556
1557         id_len = sizeof("JOB")-1;
1558         unit_len = sizeof("UNIT")-1;
1559         type_len = sizeof("TYPE")-1;
1560         state_len = sizeof("STATE")-1;
1561
1562         for (j = jobs; j < jobs + n; j++) {
1563                 uint32_t id = j->id;
1564                 assert(j->name && j->type && j->state);
1565
1566                 id_len = MAX(id_len, DECIMAL_STR_WIDTH(id));
1567                 unit_len = MAX(unit_len, strlen(j->name));
1568                 type_len = MAX(type_len, strlen(j->type));
1569                 state_len = MAX(state_len, strlen(j->state));
1570         }
1571
1572         if (!arg_full && id_len + 1 + unit_len + type_len + 1 + state_len > columns()) {
1573                 unit_len = MAX(33u, columns() - id_len - type_len - state_len - 3);
1574                 shorten = true;
1575         }
1576
1577         if (!arg_no_legend)
1578                 printf("%*s %-*s %-*s %-*s\n",
1579                        id_len, "JOB",
1580                        unit_len, "UNIT",
1581                        type_len, "TYPE",
1582                        state_len, "STATE");
1583
1584         for (j = jobs; j < jobs + n; j++) {
1585                 _cleanup_free_ char *e = NULL;
1586
1587                 if (streq(j->state, "running")) {
1588                         on = ansi_highlight();
1589                         off = ansi_highlight_off();
1590                 } else
1591                         on = off = "";
1592
1593                 e = shorten ? ellipsize(j->name, unit_len, 33) : NULL;
1594                 printf("%*u %s%-*s%s %-*s %s%-*s%s\n",
1595                        id_len, j->id,
1596                        on, unit_len, e ? e : j->name, off,
1597                        type_len, j->type,
1598                        on, state_len, j->state, off);
1599         }
1600
1601         if (!arg_no_legend) {
1602                 on = ansi_highlight();
1603                 off = ansi_highlight_off();
1604
1605                 printf("\n%s%u jobs listed%s.\n", on, n, off);
1606         }
1607 }
1608
1609 static bool output_show_job(struct job_info *job, char **patterns) {
1610         if (!strv_isempty(patterns)) {
1611                 char **pattern;
1612
1613                 STRV_FOREACH(pattern, patterns)
1614                         if (fnmatch(*pattern, job->name, FNM_NOESCAPE) == 0)
1615                                 return true;
1616                 return false;
1617         }
1618
1619         return true;
1620 }
1621
1622 static int list_jobs(sd_bus *bus, char **args) {
1623         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1624         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1625         const char *name, *type, *state, *job_path, *unit_path;
1626         _cleanup_free_ struct job_info *jobs = NULL;
1627         size_t size = 0;
1628         unsigned c = 0;
1629         uint32_t id;
1630         int r;
1631         bool skipped = false;
1632
1633         r = sd_bus_call_method(
1634                         bus,
1635                         "org.freedesktop.systemd1",
1636                         "/org/freedesktop/systemd1",
1637                         "org.freedesktop.systemd1.Manager",
1638                         "ListJobs",
1639                         &error,
1640                         &reply,
1641                         NULL);
1642         if (r < 0) {
1643                 log_error("Failed to list jobs: %s", bus_error_message(&error, r));
1644                 return r;
1645         }
1646
1647         r = sd_bus_message_enter_container(reply, 'a', "(usssoo)");
1648         if (r < 0)
1649                 return bus_log_parse_error(r);
1650
1651         while ((r = sd_bus_message_read(reply, "(usssoo)", &id, &name, &type, &state, &job_path, &unit_path)) > 0) {
1652                 struct job_info job = { id, name, type, state };
1653
1654                 if (!output_show_job(&job, strv_skip_first(args))) {
1655                         skipped = true;
1656                         continue;
1657                 }
1658
1659                 if (!GREEDY_REALLOC(jobs, size, c + 1))
1660                         return log_oom();
1661
1662                 jobs[c++] = job;
1663         }
1664         if (r < 0)
1665                 return bus_log_parse_error(r);
1666
1667         r = sd_bus_message_exit_container(reply);
1668         if (r < 0)
1669                 return bus_log_parse_error(r);
1670
1671         output_jobs_list(jobs, c, skipped);
1672         return r;
1673 }
1674
1675 static int cancel_job(sd_bus *bus, char **args) {
1676         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1677         char **name;
1678
1679         assert(args);
1680
1681         if (strv_length(args) <= 1)
1682                 return daemon_reload(bus, args);
1683
1684         STRV_FOREACH(name, args+1) {
1685                 uint32_t id;
1686                 int r;
1687
1688                 r = safe_atou32(*name, &id);
1689                 if (r < 0) {
1690                         log_error("Failed to parse job id \"%s\": %s", *name, strerror(-r));
1691                         return r;
1692                 }
1693
1694                 r = sd_bus_call_method(
1695                                 bus,
1696                                 "org.freedesktop.systemd1",
1697                                 "/org/freedesktop/systemd1",
1698                                 "org.freedesktop.systemd1.Manager",
1699                                 "CancelJob",
1700                                 &error,
1701                                 NULL,
1702                                 "u", id);
1703                 if (r < 0) {
1704                         log_error("Failed to cancel job %u: %s", (unsigned) id, bus_error_message(&error, r));
1705                         return r;
1706                 }
1707         }
1708
1709         return 0;
1710 }
1711
1712 static int need_daemon_reload(sd_bus *bus, const char *unit) {
1713         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1714         _cleanup_free_ char *n = NULL;
1715         const char *path;
1716         int b, r;
1717
1718         /* We ignore all errors here, since this is used to show a
1719          * warning only */
1720
1721         n = unit_name_mangle(unit);
1722         if (!n)
1723                 return -ENOMEM;
1724
1725         /* We don't use unit_dbus_path_from_name() directly since we
1726          * don't want to load the unit if it isn't loaded. */
1727
1728         r = sd_bus_call_method(
1729                         bus,
1730                         "org.freedesktop.systemd1",
1731                         "/org/freedesktop/systemd1",
1732                         "org.freedesktop.systemd1.Manager",
1733                         "GetUnit",
1734                         NULL,
1735                         &reply,
1736                         "s", n);
1737         if (r < 0)
1738                 return r;
1739
1740         r = sd_bus_message_read(reply, "o", &path);
1741         if (r < 0)
1742                 return r;
1743
1744         r = sd_bus_get_property_trivial(
1745                         bus,
1746                         "org.freedesktop.systemd1",
1747                         path,
1748                         "org.freedesktop.systemd1.Unit",
1749                         "NeedDaemonReload",
1750                         NULL,
1751                         'b', &b);
1752         if (r < 0)
1753                 return r;
1754
1755         return b;
1756 }
1757
1758 typedef struct WaitData {
1759         Set *set;
1760
1761         char *name;
1762         char *result;
1763 } WaitData;
1764
1765 static int wait_filter(sd_bus *bus, sd_bus_message *m, void *data, sd_bus_error *error) {
1766         WaitData *d = data;
1767
1768         assert(bus);
1769         assert(m);
1770         assert(d);
1771
1772         log_debug("Got D-Bus request: %s.%s() on %s",
1773                   sd_bus_message_get_interface(m),
1774                   sd_bus_message_get_member(m),
1775                   sd_bus_message_get_path(m));
1776
1777         if (sd_bus_message_is_signal(m, "org.freedesktop.DBus.Local", "Disconnected")) {
1778                 log_error("Warning! D-Bus connection terminated.");
1779                 sd_bus_close(bus);
1780         } else if (sd_bus_message_is_signal(m, "org.freedesktop.systemd1.Manager", "JobRemoved")) {
1781                 uint32_t id;
1782                 const char *path, *result, *unit;
1783                 char *ret;
1784                 int r;
1785
1786                 r = sd_bus_message_read(m, "uoss", &id, &path, &unit, &result);
1787                 if (r >= 0) {
1788                         ret = set_remove(d->set, (char*) path);
1789                         if (!ret)
1790                                 return 0;
1791
1792                         free(ret);
1793
1794                         if (!isempty(result))
1795                                 d->result = strdup(result);
1796
1797                         if (!isempty(unit))
1798                                 d->name = strdup(unit);
1799
1800                         return 0;
1801                 }
1802 #ifndef NOLEGACY
1803                 r = sd_bus_message_read(m, "uos", &id, &path, &result);
1804                 if (r >= 0) {
1805                         ret = set_remove(d->set, (char*) path);
1806                         if (!ret)
1807                                 return 0;
1808
1809                         free(ret);
1810
1811                         if (*result)
1812                                 d->result = strdup(result);
1813
1814                         return 0;
1815                 }
1816 #endif
1817
1818                 bus_log_parse_error(r);
1819         }
1820
1821         return 0;
1822 }
1823
1824 static int enable_wait_for_jobs(sd_bus *bus) {
1825         int r;
1826
1827         assert(bus);
1828
1829         r = sd_bus_add_match(
1830                         bus,
1831                         "type='signal',"
1832                         "sender='org.freedesktop.systemd1',"
1833                         "interface='org.freedesktop.systemd1.Manager',"
1834                         "member='JobRemoved',"
1835                         "path='/org/freedesktop/systemd1'",
1836                         NULL, NULL);
1837         if (r < 0) {
1838                 log_error("Failed to add match");
1839                 return -EIO;
1840         }
1841
1842         /* This is slightly dirty, since we don't undo the match registrations. */
1843         return 0;
1844 }
1845
1846 static int wait_for_jobs(sd_bus *bus, Set *s) {
1847         WaitData d = { .set = s };
1848         int r;
1849
1850         assert(bus);
1851         assert(s);
1852
1853         r = sd_bus_add_filter(bus, wait_filter, &d);
1854         if (r < 0)
1855                 return log_oom();
1856
1857         while (!set_isempty(s)) {
1858                 for (;;) {
1859                         r = sd_bus_process(bus, NULL);
1860                         if (r < 0)
1861                                 return r;
1862                         if (r > 0)
1863                                 break;
1864                         r = sd_bus_wait(bus, (uint64_t) -1);
1865                         if (r < 0)
1866                                 return r;
1867                 }
1868
1869                 if (!d.result)
1870                         goto free_name;
1871
1872                 if (!arg_quiet) {
1873                         if (streq(d.result, "timeout"))
1874                                 log_error("Job for %s timed out.", strna(d.name));
1875                         else if (streq(d.result, "canceled"))
1876                                 log_error("Job for %s canceled.", strna(d.name));
1877                         else if (streq(d.result, "dependency"))
1878                                 log_error("A dependency job for %s failed. See 'journalctl -xn' for details.", strna(d.name));
1879                         else if (!streq(d.result, "done") && !streq(d.result, "skipped"))
1880                                 log_error("Job for %s failed. See 'systemctl status %s' and 'journalctl -xn' for details.", strna(d.name), strna(d.name));
1881                 }
1882
1883                 if (streq_ptr(d.result, "timeout"))
1884                         r = -ETIME;
1885                 else if (streq_ptr(d.result, "canceled"))
1886                         r = -ECANCELED;
1887                 else if (!streq_ptr(d.result, "done") && !streq_ptr(d.result, "skipped"))
1888                         r = -EIO;
1889
1890                 free(d.result);
1891                 d.result = NULL;
1892
1893         free_name:
1894                 free(d.name);
1895                 d.name = NULL;
1896         }
1897
1898         return sd_bus_remove_filter(bus, wait_filter, &d);
1899 }
1900
1901 static int check_one_unit(sd_bus *bus, const char *name, const char *good_states, bool quiet) {
1902         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1903         _cleanup_free_ char *n = NULL, *state = NULL;
1904         const char *path;
1905         int r;
1906
1907         assert(name);
1908
1909         n = unit_name_mangle(name);
1910         if (!n)
1911                 return log_oom();
1912
1913         /* We don't use unit_dbus_path_from_name() directly since we
1914          * don't want to load the unit if it isn't loaded. */
1915
1916         r = sd_bus_call_method(
1917                         bus,
1918                         "org.freedesktop.systemd1",
1919                         "/org/freedesktop/systemd1",
1920                         "org.freedesktop.systemd1.Manager",
1921                         "GetUnit",
1922                         NULL,
1923                         &reply,
1924                         "s", n);
1925         if (r < 0) {
1926                 if (!quiet)
1927                         puts("unknown");
1928                 return 0;
1929         }
1930
1931         r = sd_bus_message_read(reply, "o", &path);
1932         if (r < 0)
1933                 return bus_log_parse_error(r);
1934
1935         r = sd_bus_get_property_string(
1936                         bus,
1937                         "org.freedesktop.systemd1",
1938                         path,
1939                         "org.freedesktop.systemd1.Unit",
1940                         "ActiveState",
1941                         NULL,
1942                         &state);
1943         if (r < 0) {
1944                 if (!quiet)
1945                         puts("unknown");
1946                 return 0;
1947         }
1948
1949         if (!quiet)
1950                 puts(state);
1951
1952         return nulstr_contains(good_states, state);
1953 }
1954
1955 static int check_triggering_units(
1956                 sd_bus *bus,
1957                 const char *name) {
1958
1959         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1960         _cleanup_free_ char *path = NULL, *n = NULL, *state = NULL;
1961         _cleanup_strv_free_ char **triggered_by = NULL;
1962         bool print_warning_label = true;
1963         char **i;
1964         int r;
1965
1966         n = unit_name_mangle(name);
1967         if (!n)
1968                 return log_oom();
1969
1970         path = unit_dbus_path_from_name(n);
1971         if (!path)
1972                 return log_oom();
1973
1974         r = sd_bus_get_property_string(
1975                         bus,
1976                         "org.freedesktop.systemd1",
1977                         path,
1978                         "org.freedesktop.systemd1.Unit",
1979                         "LoadState",
1980                         &error,
1981                         &state);
1982         if (r < 0) {
1983                 log_error("Failed to get load state of %s: %s", n, bus_error_message(&error, r));
1984                 return r;
1985         }
1986
1987         if (streq(state, "masked"))
1988                 return 0;
1989
1990         r = sd_bus_get_property_strv(
1991                         bus,
1992                         "org.freedesktop.systemd1",
1993                         path,
1994                         "org.freedesktop.systemd1.Unit",
1995                         "TriggeredBy",
1996                         &error,
1997                         &triggered_by);
1998         if (r < 0) {
1999                 log_error("Failed to get triggered by array of %s: %s", n, bus_error_message(&error, r));
2000                 return r;
2001         }
2002
2003         STRV_FOREACH(i, triggered_by) {
2004                 r = check_one_unit(bus, *i, "active\0reloading\0", true);
2005                 if (r < 0) {
2006                         log_error("Failed to check unit: %s", strerror(-r));
2007                         return r;
2008                 }
2009
2010                 if (r == 0)
2011                         continue;
2012
2013                 if (print_warning_label) {
2014                         log_warning("Warning: Stopping %s, but it can still be activated by:", n);
2015                         print_warning_label = false;
2016                 }
2017
2018                 log_warning("  %s", *i);
2019         }
2020
2021         return 0;
2022 }
2023
2024 static int start_unit_one(
2025                 sd_bus *bus,
2026                 const char *method,
2027                 const char *name,
2028                 const char *mode,
2029                 sd_bus_error *error,
2030                 Set *s) {
2031
2032         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2033         _cleanup_free_ char *n;
2034         const char *path;
2035         int r;
2036
2037         assert(method);
2038         assert(name);
2039         assert(mode);
2040         assert(error);
2041
2042         n = unit_name_mangle(name);
2043         if (!n)
2044                 return log_oom();
2045
2046         r = sd_bus_call_method(
2047                         bus,
2048                         "org.freedesktop.systemd1",
2049                         "/org/freedesktop/systemd1",
2050                         "org.freedesktop.systemd1.Manager",
2051                         method,
2052                         error,
2053                         &reply,
2054                         "ss", n, mode);
2055         if (r < 0) {
2056                 if (r == -ENOENT && arg_action != ACTION_SYSTEMCTL)
2057                         /* There's always a fallback possible for
2058                          * legacy actions. */
2059                         return -EADDRNOTAVAIL;
2060
2061                 log_error("Failed to start %s: %s", name, bus_error_message(error, r));
2062                 return r;
2063         }
2064
2065         r = sd_bus_message_read(reply, "o", &path);
2066         if (r < 0)
2067                 return bus_log_parse_error(r);
2068
2069         if (need_daemon_reload(bus, n) > 0)
2070                 log_warning("Warning: Unit file of %s changed on disk, 'systemctl%s daemon-reload' recommended.",
2071                             n, arg_scope == UNIT_FILE_SYSTEM ? "" : " --user");
2072
2073         if (s) {
2074                 char *p;
2075
2076                 p = strdup(path);
2077                 if (!p)
2078                         return log_oom();
2079
2080                 r = set_consume(s, p);
2081                 if (r < 0)
2082                         return log_oom();
2083         }
2084
2085         return 0;
2086 }
2087
2088 static const struct {
2089         const char *target;
2090         const char *verb;
2091         const char *mode;
2092 } action_table[_ACTION_MAX] = {
2093         [ACTION_HALT]         = { SPECIAL_HALT_TARGET,         "halt",         "replace-irreversibly" },
2094         [ACTION_POWEROFF]     = { SPECIAL_POWEROFF_TARGET,     "poweroff",     "replace-irreversibly" },
2095         [ACTION_REBOOT]       = { SPECIAL_REBOOT_TARGET,       "reboot",       "replace-irreversibly" },
2096         [ACTION_KEXEC]        = { SPECIAL_KEXEC_TARGET,        "kexec",        "replace-irreversibly" },
2097         [ACTION_RUNLEVEL2]    = { SPECIAL_RUNLEVEL2_TARGET,    NULL,           "isolate" },
2098         [ACTION_RUNLEVEL3]    = { SPECIAL_RUNLEVEL3_TARGET,    NULL,           "isolate" },
2099         [ACTION_RUNLEVEL4]    = { SPECIAL_RUNLEVEL4_TARGET,    NULL,           "isolate" },
2100         [ACTION_RUNLEVEL5]    = { SPECIAL_RUNLEVEL5_TARGET,    NULL,           "isolate" },
2101         [ACTION_RESCUE]       = { SPECIAL_RESCUE_TARGET,       "rescue",       "isolate" },
2102         [ACTION_EMERGENCY]    = { SPECIAL_EMERGENCY_TARGET,    "emergency",    "isolate" },
2103         [ACTION_DEFAULT]      = { SPECIAL_DEFAULT_TARGET,      "default",      "isolate" },
2104         [ACTION_EXIT]         = { SPECIAL_EXIT_TARGET,         "exit",         "replace-irreversibly" },
2105         [ACTION_SUSPEND]      = { SPECIAL_SUSPEND_TARGET,      "suspend",      "replace-irreversibly" },
2106         [ACTION_HIBERNATE]    = { SPECIAL_HIBERNATE_TARGET,    "hibernate",    "replace-irreversibly" },
2107         [ACTION_HYBRID_SLEEP] = { SPECIAL_HYBRID_SLEEP_TARGET, "hybrid-sleep", "replace-irreversibly" },
2108 };
2109
2110 static enum action verb_to_action(const char *verb) {
2111         enum action i;
2112
2113         for (i = _ACTION_INVALID; i < _ACTION_MAX; i++)
2114                 if (streq_ptr(action_table[i].verb, verb))
2115                         return i;
2116
2117         return _ACTION_INVALID;
2118 }
2119
2120 static int start_unit(sd_bus *bus, char **args) {
2121         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2122         _cleanup_set_free_free_ Set *s = NULL;
2123         const char *method, *mode, *one_name;
2124         char **name;
2125         int r;
2126
2127         assert(bus);
2128
2129         ask_password_agent_open_if_enabled();
2130
2131         if (arg_action == ACTION_SYSTEMCTL) {
2132                 enum action action;
2133                 method =
2134                         streq(args[0], "stop") ||
2135                         streq(args[0], "condstop")              ? "StopUnit" :
2136                         streq(args[0], "reload")                ? "ReloadUnit" :
2137                         streq(args[0], "restart")               ? "RestartUnit" :
2138
2139                         streq(args[0], "try-restart")           ||
2140                         streq(args[0], "condrestart")           ? "TryRestartUnit" :
2141
2142                         streq(args[0], "reload-or-restart")     ? "ReloadOrRestartUnit" :
2143
2144                         streq(args[0], "reload-or-try-restart") ||
2145                         streq(args[0], "condreload")            ||
2146                         streq(args[0], "force-reload")          ? "ReloadOrTryRestartUnit" :
2147                                                                   "StartUnit";
2148                 action = verb_to_action(args[0]);
2149
2150                 mode = streq(args[0], "isolate") ? "isolate" :
2151                        action_table[action].mode ?: arg_job_mode;
2152
2153                 one_name = action_table[action].target;
2154         } else {
2155                 assert(arg_action < ELEMENTSOF(action_table));
2156                 assert(action_table[arg_action].target);
2157
2158                 method = "StartUnit";
2159
2160                 mode = action_table[arg_action].mode;
2161                 one_name = action_table[arg_action].target;
2162         }
2163
2164         if (!arg_no_block) {
2165                 r = enable_wait_for_jobs(bus);
2166                 if (r < 0) {
2167                         log_error("Could not watch jobs: %s", strerror(-r));
2168                         return r;
2169                 }
2170
2171                 s = set_new(string_hash_func, string_compare_func);
2172                 if (!s)
2173                         return log_oom();
2174         }
2175
2176         if (one_name) {
2177                 r = start_unit_one(bus, method, one_name, mode, &error, s);
2178                 if (r < 0)
2179                         r = translate_bus_error_to_exit_status(r, &error);
2180         } else {
2181                 r = 0;
2182
2183                 STRV_FOREACH(name, args+1) {
2184                         int q;
2185
2186                         q = start_unit_one(bus, method, *name, mode, &error, s);
2187                         if (q < 0) {
2188                                 r = translate_bus_error_to_exit_status(q, &error);
2189                                 sd_bus_error_free(&error);
2190                         }
2191                 }
2192         }
2193
2194         if (!arg_no_block) {
2195                 int q;
2196
2197                 q = wait_for_jobs(bus, s);
2198                 if (q < 0)
2199                         return q;
2200
2201                 /* When stopping units, warn if they can still be triggered by
2202                  * another active unit (socket, path, timer) */
2203                 if (!arg_quiet && streq(method, "StopUnit")) {
2204                         if (one_name)
2205                                 check_triggering_units(bus, one_name);
2206                         else
2207                                 STRV_FOREACH(name, args+1)
2208                                         check_triggering_units(bus, *name);
2209                 }
2210         }
2211
2212         return r;
2213 }
2214
2215 /* Ask systemd-logind, which might grant access to unprivileged users
2216  * through PolicyKit */
2217 static int reboot_with_logind(sd_bus *bus, enum action a) {
2218 #ifdef HAVE_LOGIND
2219         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2220         const char *method;
2221         int r;
2222
2223         if (!bus)
2224                 return -EIO;
2225
2226         polkit_agent_open_if_enabled();
2227
2228         switch (a) {
2229
2230         case ACTION_REBOOT:
2231                 method = "Reboot";
2232                 break;
2233
2234         case ACTION_POWEROFF:
2235                 method = "PowerOff";
2236                 break;
2237
2238         case ACTION_SUSPEND:
2239                 method = "Suspend";
2240                 break;
2241
2242         case ACTION_HIBERNATE:
2243                 method = "Hibernate";
2244                 break;
2245
2246         case ACTION_HYBRID_SLEEP:
2247                 method = "HybridSleep";
2248                 break;
2249
2250         default:
2251                 return -EINVAL;
2252         }
2253
2254         r = sd_bus_call_method(
2255                         bus,
2256                         "org.freedesktop.login1",
2257                         "/org/freedesktop/login1",
2258                         "org.freedesktop.login1.Manager",
2259                         method,
2260                         &error,
2261                         NULL,
2262                         "b", true);
2263         if (r < 0)
2264                 log_error("Failed to execute operation: %s", bus_error_message(&error, r));
2265
2266         return r;
2267 #else
2268         return -ENOSYS;
2269 #endif
2270 }
2271
2272 static int check_inhibitors(sd_bus *bus, enum action a) {
2273 #ifdef HAVE_LOGIND
2274         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2275         _cleanup_strv_free_ char **sessions = NULL;
2276         const char *what, *who, *why, *mode;
2277         uint32_t uid, pid;
2278         unsigned c = 0;
2279         char **s;
2280         int r;
2281
2282         if (!bus)
2283                 return 0;
2284
2285         if (arg_ignore_inhibitors || arg_force > 0)
2286                 return 0;
2287
2288         if (arg_when > 0)
2289                 return 0;
2290
2291         if (geteuid() == 0)
2292                 return 0;
2293
2294         if (!on_tty())
2295                 return 0;
2296
2297         r = sd_bus_call_method(
2298                         bus,
2299                         "org.freedesktop.login1",
2300                         "/org/freedesktop/login1",
2301                         "org.freedesktop.login1.Manager",
2302                         "ListInhibitors",
2303                         NULL,
2304                         &reply,
2305                         NULL);
2306         if (r < 0)
2307                 /* If logind is not around, then there are no inhibitors... */
2308                 return 0;
2309
2310         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssuu)");
2311         if (r < 0)
2312                 return bus_log_parse_error(r);
2313
2314         while ((r = sd_bus_message_read(reply, "(ssssuu)", &what, &who, &why, &mode, &uid, &pid)) > 0) {
2315                 _cleanup_free_ char *comm = NULL, *user = NULL;
2316                 _cleanup_strv_free_ char **sv = NULL;
2317
2318                 if (!streq(mode, "block"))
2319                         continue;
2320
2321                 sv = strv_split(what, ":");
2322                 if (!sv)
2323                         return log_oom();
2324
2325                 if (!strv_contains(sv,
2326                                   a == ACTION_HALT ||
2327                                   a == ACTION_POWEROFF ||
2328                                   a == ACTION_REBOOT ||
2329                                   a == ACTION_KEXEC ? "shutdown" : "sleep"))
2330                         continue;
2331
2332                 get_process_comm(pid, &comm);
2333                 user = uid_to_name(uid);
2334
2335                 log_warning("Operation inhibited by \"%s\" (PID %lu \"%s\", user %s), reason is \"%s\".",
2336                             who, (unsigned long) pid, strna(comm), strna(user), why);
2337
2338                 c++;
2339         }
2340         if (r < 0)
2341                 return bus_log_parse_error(r);
2342
2343         r = sd_bus_message_exit_container(reply);
2344         if (r < 0)
2345                 return bus_log_parse_error(r);
2346
2347         /* Check for current sessions */
2348         sd_get_sessions(&sessions);
2349         STRV_FOREACH(s, sessions) {
2350                 _cleanup_free_ char *type = NULL, *tty = NULL, *seat = NULL, *user = NULL, *service = NULL, *class = NULL;
2351
2352                 if (sd_session_get_uid(*s, &uid) < 0 || uid == getuid())
2353                         continue;
2354
2355                 if (sd_session_get_class(*s, &class) < 0 || !streq(class, "user"))
2356                         continue;
2357
2358                 if (sd_session_get_type(*s, &type) < 0 || (!streq(type, "x11") && !streq(type, "tty")))
2359                         continue;
2360
2361                 sd_session_get_tty(*s, &tty);
2362                 sd_session_get_seat(*s, &seat);
2363                 sd_session_get_service(*s, &service);
2364                 user = uid_to_name(uid);
2365
2366                 log_warning("User %s is logged in on %s.", strna(user), isempty(tty) ? (isempty(seat) ? strna(service) : seat) : tty);
2367                 c++;
2368         }
2369
2370         if (c <= 0)
2371                 return 0;
2372
2373         log_error("Please retry operation after closing inhibitors and logging out other users.\nAlternatively, ignore inhibitors and users with 'systemctl %s -i'.",
2374                   action_table[a].verb);
2375
2376         return -EPERM;
2377 #else
2378         return 0;
2379 #endif
2380 }
2381
2382 static int start_special(sd_bus *bus, char **args) {
2383         enum action a;
2384         int r;
2385
2386         assert(args);
2387
2388         a = verb_to_action(args[0]);
2389
2390         r = check_inhibitors(bus, a);
2391         if (r < 0)
2392                 return r;
2393
2394         if (arg_force >= 2 && geteuid() != 0) {
2395                 log_error("Must be root.");
2396                 return -EPERM;
2397         }
2398
2399         if (arg_force >= 2 &&
2400             (a == ACTION_HALT ||
2401              a == ACTION_POWEROFF ||
2402              a == ACTION_REBOOT))
2403                 return halt_now(a);
2404
2405         if (arg_force >= 1 &&
2406             (a == ACTION_HALT ||
2407              a == ACTION_POWEROFF ||
2408              a == ACTION_REBOOT ||
2409              a == ACTION_KEXEC ||
2410              a == ACTION_EXIT))
2411                 return daemon_reload(bus, args);
2412
2413         /* first try logind, to allow authentication with polkit */
2414         if (geteuid() != 0 &&
2415             (a == ACTION_POWEROFF ||
2416              a == ACTION_REBOOT ||
2417              a == ACTION_SUSPEND ||
2418              a == ACTION_HIBERNATE ||
2419              a == ACTION_HYBRID_SLEEP)) {
2420                 r = reboot_with_logind(bus, a);
2421                 if (r >= 0)
2422                         return r;
2423         }
2424
2425         r = start_unit(bus, args);
2426         if (r == EXIT_SUCCESS)
2427                 warn_wall(a);
2428
2429         return r;
2430 }
2431
2432 static int check_unit_active(sd_bus *bus, char **args) {
2433         char **name;
2434         int r = 3; /* According to LSB: "program is not running" */
2435
2436         assert(bus);
2437         assert(args);
2438
2439         STRV_FOREACH(name, args+1) {
2440                 int state;
2441
2442                 state = check_one_unit(bus, *name, "active\0reloading\0", arg_quiet);
2443                 if (state < 0)
2444                         return state;
2445                 if (state > 0)
2446                         r = 0;
2447         }
2448
2449         return r;
2450 }
2451
2452 static int check_unit_failed(sd_bus *bus, char **args) {
2453         char **name;
2454         int r = 1;
2455
2456         assert(bus);
2457         assert(args);
2458
2459         STRV_FOREACH(name, args+1) {
2460                 int state;
2461
2462                 state = check_one_unit(bus, *name, "failed\0", arg_quiet);
2463                 if (state < 0)
2464                         return state;
2465                 if (state > 0)
2466                         r = 0;
2467         }
2468
2469         return r;
2470 }
2471
2472 static int kill_unit(sd_bus *bus, char **args) {
2473         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2474         char **name;
2475         int r = 0;
2476
2477         assert(bus);
2478         assert(args);
2479
2480         if (!arg_kill_who)
2481                 arg_kill_who = "all";
2482
2483         STRV_FOREACH(name, args+1) {
2484                 _cleanup_free_ char *n = NULL;
2485
2486                 n = unit_name_mangle(*name);
2487                 if (!n)
2488                         return log_oom();
2489
2490                 r = sd_bus_call_method(
2491                                 bus,
2492                                 "org.freedesktop.systemd1",
2493                                 "/org/freedesktop/systemd1",
2494                                 "org.freedesktop.systemd1.Manager",
2495                                 "KillUnit",
2496                                 &error,
2497                                 NULL,
2498                                 "ssi", n, arg_kill_who, arg_signal);
2499                 if (r < 0) {
2500                         log_error("Failed to kill unit %s: %s", n, bus_error_message(&error, r));
2501                         return r;
2502                 }
2503         }
2504
2505         return 0;
2506 }
2507
2508 typedef struct ExecStatusInfo {
2509         char *name;
2510
2511         char *path;
2512         char **argv;
2513
2514         bool ignore;
2515
2516         usec_t start_timestamp;
2517         usec_t exit_timestamp;
2518         pid_t pid;
2519         int code;
2520         int status;
2521
2522         LIST_FIELDS(struct ExecStatusInfo, exec);
2523 } ExecStatusInfo;
2524
2525 static void exec_status_info_free(ExecStatusInfo *i) {
2526         assert(i);
2527
2528         free(i->name);
2529         free(i->path);
2530         strv_free(i->argv);
2531         free(i);
2532 }
2533
2534 static int exec_status_info_deserialize(sd_bus_message *m, ExecStatusInfo *i) {
2535         uint64_t start_timestamp, exit_timestamp, start_timestamp_monotonic, exit_timestamp_monotonic;
2536         const char *path;
2537         uint32_t pid;
2538         int32_t code, status;
2539         int ignore, r;
2540
2541         assert(m);
2542         assert(i);
2543
2544         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_STRUCT, "sasbttttuii");
2545         if (r < 0)
2546                 return bus_log_parse_error(r);
2547         else if (r == 0)
2548                 return 0;
2549
2550         r = sd_bus_message_read(m, "s", &path);
2551         if (r < 0)
2552                 return bus_log_parse_error(r);
2553
2554         i->path = strdup(path);
2555         if (!i->path)
2556                 return log_oom();
2557
2558         r = sd_bus_message_read_strv(m, &i->argv);
2559         if (r < 0)
2560                 return bus_log_parse_error(r);
2561
2562         r = sd_bus_message_read(m,
2563                                 "bttttuii",
2564                                 &ignore,
2565                                 &start_timestamp, &start_timestamp_monotonic,
2566                                 &exit_timestamp, &exit_timestamp_monotonic,
2567                                 &pid,
2568                                 &code, &status);
2569         if (r < 0)
2570                 return bus_log_parse_error(r);
2571
2572         i->ignore = ignore;
2573         i->start_timestamp = (usec_t) start_timestamp;
2574         i->exit_timestamp = (usec_t) exit_timestamp;
2575         i->pid = (pid_t) pid;
2576         i->code = code;
2577         i->status = status;
2578
2579         r = sd_bus_message_exit_container(m);
2580         if (r < 0)
2581                 return bus_log_parse_error(r);
2582
2583         return 1;
2584 }
2585
2586 typedef struct UnitStatusInfo {
2587         const char *id;
2588         const char *load_state;
2589         const char *active_state;
2590         const char *sub_state;
2591         const char *unit_file_state;
2592
2593         const char *description;
2594         const char *following;
2595
2596         char **documentation;
2597
2598         const char *fragment_path;
2599         const char *source_path;
2600         const char *control_group;
2601
2602         char **dropin_paths;
2603
2604         const char *load_error;
2605         const char *result;
2606
2607         usec_t inactive_exit_timestamp;
2608         usec_t inactive_exit_timestamp_monotonic;
2609         usec_t active_enter_timestamp;
2610         usec_t active_exit_timestamp;
2611         usec_t inactive_enter_timestamp;
2612
2613         bool need_daemon_reload;
2614
2615         /* Service */
2616         pid_t main_pid;
2617         pid_t control_pid;
2618         const char *status_text;
2619         const char *pid_file;
2620         bool running:1;
2621
2622         usec_t start_timestamp;
2623         usec_t exit_timestamp;
2624
2625         int exit_code, exit_status;
2626
2627         usec_t condition_timestamp;
2628         bool condition_result;
2629         bool failed_condition_trigger;
2630         bool failed_condition_negate;
2631         const char *failed_condition;
2632         const char *failed_condition_param;
2633
2634         /* Socket */
2635         unsigned n_accepted;
2636         unsigned n_connections;
2637         bool accept;
2638
2639         /* Pairs of type, path */
2640         char **listen;
2641
2642         /* Device */
2643         const char *sysfs_path;
2644
2645         /* Mount, Automount */
2646         const char *where;
2647
2648         /* Swap */
2649         const char *what;
2650
2651         LIST_HEAD(ExecStatusInfo, exec);
2652 } UnitStatusInfo;
2653
2654 static void print_status_info(
2655                 UnitStatusInfo *i,
2656                 bool *ellipsized) {
2657
2658         ExecStatusInfo *p;
2659         const char *on, *off, *ss;
2660         usec_t timestamp;
2661         char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], *s1;
2662         char since2[FORMAT_TIMESTAMP_MAX], *s2;
2663         const char *path;
2664         int flags =
2665                 arg_all * OUTPUT_SHOW_ALL |
2666                 (!on_tty() || pager_have()) * OUTPUT_FULL_WIDTH |
2667                 on_tty() * OUTPUT_COLOR |
2668                 !arg_quiet * OUTPUT_WARN_CUTOFF |
2669                 arg_full * OUTPUT_FULL_WIDTH;
2670         char **t, **t2;
2671
2672         assert(i);
2673
2674         /* This shows pretty information about a unit. See
2675          * print_property() for a low-level property printer */
2676
2677         printf("%s", strna(i->id));
2678
2679         if (i->description && !streq_ptr(i->id, i->description))
2680                 printf(" - %s", i->description);
2681
2682         printf("\n");
2683
2684         if (i->following)
2685                 printf("   Follow: unit currently follows state of %s\n", i->following);
2686
2687         if (streq_ptr(i->load_state, "error")) {
2688                 on = ansi_highlight_red();
2689                 off = ansi_highlight_off();
2690         } else
2691                 on = off = "";
2692
2693         path = i->source_path ? i->source_path : i->fragment_path;
2694
2695         if (i->load_error)
2696                 printf("   Loaded: %s%s%s (Reason: %s)\n",
2697                        on, strna(i->load_state), off, i->load_error);
2698         else if (path && i->unit_file_state)
2699                 printf("   Loaded: %s%s%s (%s; %s)\n",
2700                        on, strna(i->load_state), off, path, i->unit_file_state);
2701         else if (path)
2702                 printf("   Loaded: %s%s%s (%s)\n",
2703                        on, strna(i->load_state), off, path);
2704         else
2705                 printf("   Loaded: %s%s%s\n",
2706                        on, strna(i->load_state), off);
2707
2708         if (!strv_isempty(i->dropin_paths)) {
2709                 _cleanup_free_ char *dir = NULL;
2710                 bool last = false;
2711                 char ** dropin;
2712
2713                 STRV_FOREACH(dropin, i->dropin_paths) {
2714                         if (! dir || last) {
2715                                 printf(dir ? "        " : "  Drop-In: ");
2716
2717                                 free(dir);
2718                                 dir = NULL;
2719
2720                                 if (path_get_parent(*dropin, &dir) < 0) {
2721                                         log_oom();
2722                                         return;
2723                                 }
2724
2725                                 printf("%s\n           %s", dir,
2726                                        draw_special_char(DRAW_TREE_RIGHT));
2727                         }
2728
2729                         last = ! (*(dropin + 1) && startswith(*(dropin + 1), dir));
2730
2731                         printf("%s%s", basename(*dropin), last ? "\n" : ", ");
2732                 }
2733         }
2734
2735         ss = streq_ptr(i->active_state, i->sub_state) ? NULL : i->sub_state;
2736
2737         if (streq_ptr(i->active_state, "failed")) {
2738                 on = ansi_highlight_red();
2739                 off = ansi_highlight_off();
2740         } else if (streq_ptr(i->active_state, "active") || streq_ptr(i->active_state, "reloading")) {
2741                 on = ansi_highlight_green();
2742                 off = ansi_highlight_off();
2743         } else
2744                 on = off = "";
2745
2746         if (ss)
2747                 printf("   Active: %s%s (%s)%s",
2748                        on, strna(i->active_state), ss, off);
2749         else
2750                 printf("   Active: %s%s%s",
2751                        on, strna(i->active_state), off);
2752
2753         if (!isempty(i->result) && !streq(i->result, "success"))
2754                 printf(" (Result: %s)", i->result);
2755
2756         timestamp = (streq_ptr(i->active_state, "active")      ||
2757                      streq_ptr(i->active_state, "reloading"))   ? i->active_enter_timestamp :
2758                     (streq_ptr(i->active_state, "inactive")    ||
2759                      streq_ptr(i->active_state, "failed"))      ? i->inactive_enter_timestamp :
2760                     streq_ptr(i->active_state, "activating")    ? i->inactive_exit_timestamp :
2761                                                                   i->active_exit_timestamp;
2762
2763         s1 = format_timestamp_relative(since1, sizeof(since1), timestamp);
2764         s2 = format_timestamp(since2, sizeof(since2), timestamp);
2765
2766         if (s1)
2767                 printf(" since %s; %s\n", s2, s1);
2768         else if (s2)
2769                 printf(" since %s\n", s2);
2770         else
2771                 printf("\n");
2772
2773         if (!i->condition_result && i->condition_timestamp > 0) {
2774                 s1 = format_timestamp_relative(since1, sizeof(since1), i->condition_timestamp);
2775                 s2 = format_timestamp(since2, sizeof(since2), i->condition_timestamp);
2776
2777                 printf("           start condition failed at %s%s%s\n",
2778                        s2, s1 ? "; " : "", s1 ? s1 : "");
2779                 if (i->failed_condition_trigger)
2780                         printf("           none of the trigger conditions were met\n");
2781                 else if (i->failed_condition)
2782                         printf("           %s=%s%s was not met\n",
2783                                i->failed_condition,
2784                                i->failed_condition_negate ? "!" : "",
2785                                i->failed_condition_param);
2786         }
2787
2788         if (i->sysfs_path)
2789                 printf("   Device: %s\n", i->sysfs_path);
2790         if (i->where)
2791                 printf("    Where: %s\n", i->where);
2792         if (i->what)
2793                 printf("     What: %s\n", i->what);
2794
2795         STRV_FOREACH(t, i->documentation)
2796                 printf(" %*s %s\n", 9, t == i->documentation ? "Docs:" : "", *t);
2797
2798         STRV_FOREACH_PAIR(t, t2, i->listen)
2799                 printf(" %*s %s (%s)\n", 9, t == i->listen ? "Listen:" : "", *t2, *t);
2800
2801         if (i->accept)
2802                 printf(" Accepted: %u; Connected: %u\n", i->n_accepted, i->n_connections);
2803
2804         LIST_FOREACH(exec, p, i->exec) {
2805                 _cleanup_free_ char *argv = NULL;
2806                 bool good;
2807
2808                 /* Only show exited processes here */
2809                 if (p->code == 0)
2810                         continue;
2811
2812                 argv = strv_join(p->argv, " ");
2813                 printf("  Process: %u %s=%s ", p->pid, p->name, strna(argv));
2814
2815                 good = is_clean_exit_lsb(p->code, p->status, NULL);
2816                 if (!good) {
2817                         on = ansi_highlight_red();
2818                         off = ansi_highlight_off();
2819                 } else
2820                         on = off = "";
2821
2822                 printf("%s(code=%s, ", on, sigchld_code_to_string(p->code));
2823
2824                 if (p->code == CLD_EXITED) {
2825                         const char *c;
2826
2827                         printf("status=%i", p->status);
2828
2829                         c = exit_status_to_string(p->status, EXIT_STATUS_SYSTEMD);
2830                         if (c)
2831                                 printf("/%s", c);
2832
2833                 } else
2834                         printf("signal=%s", signal_to_string(p->status));
2835
2836                 printf(")%s\n", off);
2837
2838                 if (i->main_pid == p->pid &&
2839                     i->start_timestamp == p->start_timestamp &&
2840                     i->exit_timestamp == p->start_timestamp)
2841                         /* Let's not show this twice */
2842                         i->main_pid = 0;
2843
2844                 if (p->pid == i->control_pid)
2845                         i->control_pid = 0;
2846         }
2847
2848         if (i->main_pid > 0 || i->control_pid > 0) {
2849                 if (i->main_pid > 0) {
2850                         printf(" Main PID: %u", (unsigned) i->main_pid);
2851
2852                         if (i->running) {
2853                                 _cleanup_free_ char *comm = NULL;
2854                                 get_process_comm(i->main_pid, &comm);
2855                                 if (comm)
2856                                         printf(" (%s)", comm);
2857                         } else if (i->exit_code > 0) {
2858                                 printf(" (code=%s, ", sigchld_code_to_string(i->exit_code));
2859
2860                                 if (i->exit_code == CLD_EXITED) {
2861                                         const char *c;
2862
2863                                         printf("status=%i", i->exit_status);
2864
2865                                         c = exit_status_to_string(i->exit_status, EXIT_STATUS_SYSTEMD);
2866                                         if (c)
2867                                                 printf("/%s", c);
2868
2869                                 } else
2870                                         printf("signal=%s", signal_to_string(i->exit_status));
2871                                 printf(")");
2872                         }
2873
2874                         if (i->control_pid > 0)
2875                                 printf(";");
2876                 }
2877
2878                 if (i->control_pid > 0) {
2879                         _cleanup_free_ char *c = NULL;
2880
2881                         printf(" %8s: %u", i->main_pid ? "" : " Control", (unsigned) i->control_pid);
2882
2883                         get_process_comm(i->control_pid, &c);
2884                         if (c)
2885                                 printf(" (%s)", c);
2886                 }
2887
2888                 printf("\n");
2889         }
2890
2891         if (i->status_text)
2892                 printf("   Status: \"%s\"\n", i->status_text);
2893
2894         if (i->control_group &&
2895             (i->main_pid > 0 || i->control_pid > 0 || cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, i->control_group, false) == 0)) {
2896                 unsigned c;
2897
2898                 printf("   CGroup: %s\n", i->control_group);
2899
2900                 if (arg_transport == BUS_TRANSPORT_LOCAL || arg_transport == BUS_TRANSPORT_CONTAINER) {
2901                         unsigned k = 0;
2902                         pid_t extra[2];
2903                         char prefix[] = "           ";
2904
2905                         c = columns();
2906                         if (c > sizeof(prefix) - 1)
2907                                 c -= sizeof(prefix) - 1;
2908                         else
2909                                 c = 0;
2910
2911                         if (i->main_pid > 0)
2912                                 extra[k++] = i->main_pid;
2913
2914                         if (i->control_pid > 0)
2915                                 extra[k++] = i->control_pid;
2916
2917                         show_cgroup_and_extra(SYSTEMD_CGROUP_CONTROLLER, i->control_group, prefix,
2918                                                       c, false, extra, k, flags);
2919                 }
2920         }
2921
2922         if (i->id && arg_transport == BUS_TRANSPORT_LOCAL) {
2923                 printf("\n");
2924                 show_journal_by_unit(stdout,
2925                                      i->id,
2926                                      arg_output,
2927                                      0,
2928                                      i->inactive_exit_timestamp_monotonic,
2929                                      arg_lines,
2930                                      getuid(),
2931                                      flags,
2932                                      arg_scope == UNIT_FILE_SYSTEM,
2933                                      ellipsized);
2934         }
2935
2936         if (i->need_daemon_reload)
2937                 printf("\n%sWarning:%s Unit file changed on disk, 'systemctl %sdaemon-reload' recommended.\n",
2938                        ansi_highlight_red(),
2939                        ansi_highlight_off(),
2940                        arg_scope == UNIT_FILE_SYSTEM ? "" : "--user ");
2941 }
2942
2943 static void show_unit_help(UnitStatusInfo *i) {
2944         char **p;
2945
2946         assert(i);
2947
2948         if (!i->documentation) {
2949                 log_info("Documentation for %s not known.", i->id);
2950                 return;
2951         }
2952
2953         STRV_FOREACH(p, i->documentation) {
2954
2955                 if (startswith(*p, "man:")) {
2956                         const char *args[4] = { "man", NULL, NULL, NULL };
2957                         _cleanup_free_ char *page = NULL, *section = NULL;
2958                         char *e = NULL;
2959                         pid_t pid;
2960                         size_t k;
2961
2962                         k = strlen(*p);
2963
2964                         if ((*p)[k-1] == ')')
2965                                 e = strrchr(*p, '(');
2966
2967                         if (e) {
2968                                 page = strndup((*p) + 4, e - *p - 4);
2969                                 section = strndup(e + 1, *p + k - e - 2);
2970                                 if (!page || !section) {
2971                                         log_oom();
2972                                         return;
2973                                 }
2974
2975                                 args[1] = section;
2976                                 args[2] = page;
2977                         } else
2978                                 args[1] = *p + 4;
2979
2980                         pid = fork();
2981                         if (pid < 0) {
2982                                 log_error("Failed to fork: %m");
2983                                 continue;
2984                         }
2985
2986                         if (pid == 0) {
2987                                 /* Child */
2988                                 execvp(args[0], (char**) args);
2989                                 log_error("Failed to execute man: %m");
2990                                 _exit(EXIT_FAILURE);
2991                         }
2992
2993                         wait_for_terminate(pid, NULL);
2994                 } else
2995                         log_info("Can't show: %s", *p);
2996         }
2997 }
2998
2999 static int status_property(const char *name, sd_bus_message *m, UnitStatusInfo *i, const char *contents) {
3000         int r;
3001
3002         assert(name);
3003         assert(m);
3004         assert(i);
3005
3006         switch (contents[0]) {
3007
3008         case SD_BUS_TYPE_STRING: {
3009                 const char *s;
3010
3011                 r = sd_bus_message_read(m, "s", &s);
3012                 if (r < 0)
3013                         return bus_log_parse_error(r);
3014
3015                 if (!isempty(s)) {
3016                         if (streq(name, "Id"))
3017                                 i->id = s;
3018                         else if (streq(name, "LoadState"))
3019                                 i->load_state = s;
3020                         else if (streq(name, "ActiveState"))
3021                                 i->active_state = s;
3022                         else if (streq(name, "SubState"))
3023                                 i->sub_state = s;
3024                         else if (streq(name, "Description"))
3025                                 i->description = s;
3026                         else if (streq(name, "FragmentPath"))
3027                                 i->fragment_path = s;
3028                         else if (streq(name, "SourcePath"))
3029                                 i->source_path = s;
3030 #ifndef NOLEGACY
3031                         else if (streq(name, "DefaultControlGroup")) {
3032                                 const char *e;
3033                                 e = startswith(s, SYSTEMD_CGROUP_CONTROLLER ":");
3034                                 if (e)
3035                                         i->control_group = e;
3036                         }
3037 #endif
3038                         else if (streq(name, "ControlGroup"))
3039                                 i->control_group = s;
3040                         else if (streq(name, "StatusText"))
3041                                 i->status_text = s;
3042                         else if (streq(name, "PIDFile"))
3043                                 i->pid_file = s;
3044                         else if (streq(name, "SysFSPath"))
3045                                 i->sysfs_path = s;
3046                         else if (streq(name, "Where"))
3047                                 i->where = s;
3048                         else if (streq(name, "What"))
3049                                 i->what = s;
3050                         else if (streq(name, "Following"))
3051                                 i->following = s;
3052                         else if (streq(name, "UnitFileState"))
3053                                 i->unit_file_state = s;
3054                         else if (streq(name, "Result"))
3055                                 i->result = s;
3056                 }
3057
3058                 break;
3059         }
3060
3061         case SD_BUS_TYPE_BOOLEAN: {
3062                 int b;
3063
3064                 r = sd_bus_message_read(m, "b", &b);
3065                 if (r < 0)
3066                         return bus_log_parse_error(r);
3067
3068                 if (streq(name, "Accept"))
3069                         i->accept = b;
3070                 else if (streq(name, "NeedDaemonReload"))
3071                         i->need_daemon_reload = b;
3072                 else if (streq(name, "ConditionResult"))
3073                         i->condition_result = b;
3074
3075                 break;
3076         }
3077
3078         case SD_BUS_TYPE_UINT32: {
3079                 uint32_t u;
3080
3081                 r = sd_bus_message_read(m, "u", &u);
3082                 if (r < 0)
3083                         return bus_log_parse_error(r);
3084
3085                 if (streq(name, "MainPID")) {
3086                         if (u > 0) {
3087                                 i->main_pid = (pid_t) u;
3088                                 i->running = true;
3089                         }
3090                 } else if (streq(name, "ControlPID"))
3091                         i->control_pid = (pid_t) u;
3092                 else if (streq(name, "ExecMainPID")) {
3093                         if (u > 0)
3094                                 i->main_pid = (pid_t) u;
3095                 } else if (streq(name, "NAccepted"))
3096                         i->n_accepted = u;
3097                 else if (streq(name, "NConnections"))
3098                         i->n_connections = u;
3099
3100                 break;
3101         }
3102
3103         case SD_BUS_TYPE_INT32: {
3104                 int32_t j;
3105
3106                 r = sd_bus_message_read(m, "i", &j);
3107                 if (r < 0)
3108                         return bus_log_parse_error(r);
3109
3110                 if (streq(name, "ExecMainCode"))
3111                         i->exit_code = (int) j;
3112                 else if (streq(name, "ExecMainStatus"))
3113                         i->exit_status = (int) j;
3114
3115                 break;
3116         }
3117
3118         case SD_BUS_TYPE_UINT64: {
3119                 uint64_t u;
3120
3121                 r = sd_bus_message_read(m, "t", &u);