chiark / gitweb /
systemctl: improve readability on failed 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 static const struct {
139         const char *verb;
140         const char *method;
141 } unit_actions[] = {
142         { "start",                 "StartUnit" },
143         { "stop",                  "StopUnit" },
144         { "condstop",              "StopUnit" },
145         { "reload",                "ReloadUnit" },
146         { "restart",               "RestartUnit" },
147         { "try-restart",           "TryRestartUnit" },
148         { "condrestart",           "TryRestartUnit" },
149         { "reload-or-restart",     "ReloadOrRestartUnit" },
150         { "reload-or-try-restart", "ReloadOrTryRestartUnit" },
151         { "condreload",            "ReloadOrTryRestartUnit" },
152         { "force-reload",          "ReloadOrTryRestartUnit" }
153 };
154
155 static int daemon_reload(sd_bus *bus, char **args);
156 static int halt_now(enum action a);
157
158 static int check_one_unit(sd_bus *bus, const char *name, const char *good_states, bool quiet);
159
160 static char** strv_skip_first(char **strv) {
161         if (strv_length(strv) > 0)
162                 return strv + 1;
163         return NULL;
164 }
165
166 static void pager_open_if_enabled(void) {
167
168         if (arg_no_pager)
169                 return;
170
171         pager_open(false);
172 }
173
174 static void ask_password_agent_open_if_enabled(void) {
175
176         /* Open the password agent as a child process if necessary */
177
178         if (!arg_ask_password)
179                 return;
180
181         if (arg_scope != UNIT_FILE_SYSTEM)
182                 return;
183
184         if (arg_transport != BUS_TRANSPORT_LOCAL)
185                 return;
186
187         ask_password_agent_open();
188 }
189
190 #ifdef HAVE_LOGIND
191 static void polkit_agent_open_if_enabled(void) {
192
193         /* Open the polkit agent as a child process if necessary */
194
195         if (!arg_ask_password)
196                 return;
197
198         if (arg_scope != UNIT_FILE_SYSTEM)
199                 return;
200
201         if (arg_transport != BUS_TRANSPORT_LOCAL)
202                 return;
203
204         polkit_agent_open();
205 }
206 #endif
207
208 static int translate_bus_error_to_exit_status(int r, const sd_bus_error *error) {
209         assert(error);
210
211         if (!sd_bus_error_is_set(error))
212                 return r;
213
214         if (sd_bus_error_has_name(error, SD_BUS_ERROR_ACCESS_DENIED) ||
215             sd_bus_error_has_name(error, BUS_ERROR_ONLY_BY_DEPENDENCY) ||
216             sd_bus_error_has_name(error, BUS_ERROR_NO_ISOLATION) ||
217             sd_bus_error_has_name(error, BUS_ERROR_TRANSACTION_IS_DESTRUCTIVE))
218                 return EXIT_NOPERMISSION;
219
220         if (sd_bus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT))
221                 return EXIT_NOTINSTALLED;
222
223         if (sd_bus_error_has_name(error, BUS_ERROR_JOB_TYPE_NOT_APPLICABLE) ||
224             sd_bus_error_has_name(error, SD_BUS_ERROR_NOT_SUPPORTED))
225                 return EXIT_NOTIMPLEMENTED;
226
227         if (sd_bus_error_has_name(error, BUS_ERROR_LOAD_FAILED))
228                 return EXIT_NOTCONFIGURED;
229
230         if (r != 0)
231                 return r;
232
233         return EXIT_FAILURE;
234 }
235
236 static void warn_wall(enum action a) {
237         static const char *table[_ACTION_MAX] = {
238                 [ACTION_HALT]            = "The system is going down for system halt NOW!",
239                 [ACTION_REBOOT]          = "The system is going down for reboot NOW!",
240                 [ACTION_POWEROFF]        = "The system is going down for power-off NOW!",
241                 [ACTION_KEXEC]           = "The system is going down for kexec reboot NOW!",
242                 [ACTION_RESCUE]          = "The system is going down to rescue mode NOW!",
243                 [ACTION_EMERGENCY]       = "The system is going down to emergency mode NOW!",
244                 [ACTION_CANCEL_SHUTDOWN] = "The system shutdown has been cancelled NOW!"
245         };
246
247         if (arg_no_wall)
248                 return;
249
250         if (arg_wall) {
251                 _cleanup_free_ char *p;
252
253                 p = strv_join(arg_wall, " ");
254                 if (!p) {
255                         log_oom();
256                         return;
257                 }
258
259                 if (*p) {
260                         utmp_wall(p, NULL);
261                         return;
262                 }
263         }
264
265         if (!table[a])
266                 return;
267
268         utmp_wall(table[a], NULL);
269 }
270
271 static bool avoid_bus(void) {
272
273         if (running_in_chroot() > 0)
274                 return true;
275
276         if (sd_booted() <= 0)
277                 return true;
278
279         if (!isempty(arg_root))
280                 return true;
281
282         if (arg_scope == UNIT_FILE_GLOBAL)
283                 return true;
284
285         return false;
286 }
287
288 static int compare_unit_info(const void *a, const void *b) {
289         const UnitInfo *u = a, *v = b;
290         const char *d1, *d2;
291
292         d1 = strrchr(u->id, '.');
293         d2 = strrchr(v->id, '.');
294
295         if (d1 && d2) {
296                 int r;
297
298                 r = strcasecmp(d1, d2);
299                 if (r != 0)
300                         return r;
301         }
302
303         return strcasecmp(u->id, v->id);
304 }
305
306 static bool output_show_unit(const UnitInfo *u, char **patterns) {
307         const char *dot;
308
309         if (!strv_isempty(arg_states))
310                 return
311                         strv_contains(arg_states, u->load_state) ||
312                         strv_contains(arg_states, u->sub_state) ||
313                         strv_contains(arg_states, u->active_state);
314
315         if (!strv_isempty(patterns)) {
316                 char **pattern;
317
318                 STRV_FOREACH(pattern, patterns)
319                         if (fnmatch(*pattern, u->id, FNM_NOESCAPE) == 0)
320                                 return true;
321                 return false;
322         }
323
324         return (!arg_types || ((dot = strrchr(u->id, '.')) &&
325                                strv_find(arg_types, dot+1))) &&
326                 (arg_all || !(streq(u->active_state, "inactive")
327                               || u->following[0]) || u->job_id > 0);
328 }
329
330 static void output_units_list(const UnitInfo *unit_infos, unsigned c) {
331         unsigned id_len, max_id_len, load_len, active_len, sub_len, job_len, desc_len;
332         const UnitInfo *u;
333         unsigned n_shown = 0;
334         int job_count = 0;
335
336         max_id_len = sizeof("UNIT")-1;
337         load_len = sizeof("LOAD")-1;
338         active_len = sizeof("ACTIVE")-1;
339         sub_len = sizeof("SUB")-1;
340         job_len = sizeof("JOB")-1;
341         desc_len = 0;
342
343         for (u = unit_infos; u < unit_infos + c; u++) {
344                 max_id_len = MAX(max_id_len, strlen(u->id));
345                 load_len = MAX(load_len, strlen(u->load_state));
346                 active_len = MAX(active_len, strlen(u->active_state));
347                 sub_len = MAX(sub_len, strlen(u->sub_state));
348
349                 if (u->job_id != 0) {
350                         job_len = MAX(job_len, strlen(u->job_type));
351                         job_count++;
352                 }
353         }
354
355         if (!arg_full && original_stdout_is_tty) {
356                 unsigned basic_len;
357
358                 id_len = MIN(max_id_len, 25u);
359                 basic_len = 5 + id_len + 5 + active_len + sub_len;
360
361                 if (job_count)
362                         basic_len += job_len + 1;
363
364                 if (basic_len < (unsigned) columns()) {
365                         unsigned extra_len, incr;
366                         extra_len = columns() - basic_len;
367
368                         /* Either UNIT already got 25, or is fully satisfied.
369                          * Grant up to 25 to DESC now. */
370                         incr = MIN(extra_len, 25u);
371                         desc_len += incr;
372                         extra_len -= incr;
373
374                         /* split the remaining space between UNIT and DESC,
375                          * but do not give UNIT more than it needs. */
376                         if (extra_len > 0) {
377                                 incr = MIN(extra_len / 2, max_id_len - id_len);
378                                 id_len += incr;
379                                 desc_len += extra_len - incr;
380                         }
381                 }
382         } else
383                 id_len = max_id_len;
384
385         for (u = unit_infos; u < unit_infos + c; u++) {
386                 _cleanup_free_ char *e = NULL;
387                 const char *on_loaded, *off_loaded, *on = "";
388                 const char *on_active, *off_active, *off = "";
389
390                 if (!n_shown && !arg_no_legend) {
391                         printf("%-*s %-*s %-*s %-*s ",
392                                id_len, "UNIT",
393                                load_len, "LOAD",
394                                active_len, "ACTIVE",
395                                sub_len, "SUB");
396
397                         if (job_count)
398                                 printf("%-*s ", job_len, "JOB");
399
400                         if (!arg_full && arg_no_pager)
401                                 printf("%.*s\n", desc_len, "DESCRIPTION");
402                         else
403                                 printf("%s\n", "DESCRIPTION");
404                 }
405
406                 n_shown++;
407
408                 if (streq(u->load_state, "error") ||
409                     streq(u->load_state, "not-found")) {
410                         on_loaded = on = ansi_highlight_red();
411                         off_loaded = off = ansi_highlight_off();
412                 } else
413                         on_loaded = off_loaded = "";
414
415                 if (streq(u->active_state, "failed")) {
416                         on_active = on = ansi_highlight_red();
417                         off_active = off = ansi_highlight_off();
418                 } else
419                         on_active = off_active = "";
420
421                 e = arg_full ? NULL : ellipsize(u->id, id_len, 33);
422
423                 printf("%s%-*s%s %s%-*s%s %s%-*s %-*s%s %-*s",
424                        on, id_len, e ? e : u->id, off,
425                        on_loaded, load_len, u->load_state, off_loaded,
426                        on_active, active_len, u->active_state,
427                        sub_len, u->sub_state, off_active,
428                        job_count ? job_len + 1 : 0, u->job_id ? u->job_type : "");
429
430                 if (desc_len > 0)
431                         printf("%.*s\n", desc_len, u->description);
432                 else
433                         printf("%s\n", u->description);
434         }
435
436         if (!arg_no_legend) {
437                 const char *on, *off;
438
439                 if (n_shown) {
440                         puts("\nLOAD   = Reflects whether the unit definition was properly loaded.\n"
441                              "ACTIVE = The high-level unit activation state, i.e. generalization of SUB.\n"
442                              "SUB    = The low-level unit activation state, values depend on unit type.");
443                         puts(job_count ? "JOB    = Pending job for the unit.\n" : "");
444                         on = ansi_highlight();
445                         off = ansi_highlight_off();
446                 } else {
447                         on = ansi_highlight_red();
448                         off = ansi_highlight_off();
449                 }
450
451                 if (arg_all)
452                         printf("%s%u loaded units listed.%s\n"
453                                "To show all installed unit files use 'systemctl list-unit-files'.\n",
454                                on, n_shown, off);
455                 else
456                         printf("%s%u loaded units listed.%s Pass --all to see loaded but inactive units, too.\n"
457                                "To show all installed unit files use 'systemctl list-unit-files'.\n",
458                                on, n_shown, off);
459         }
460 }
461
462 static int get_unit_list(
463                 sd_bus *bus,
464                 sd_bus_message **_reply,
465                 UnitInfo **_unit_infos,
466                 char **patterns) {
467
468         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
469         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
470         _cleanup_free_ UnitInfo *unit_infos = NULL;
471         size_t size = 0;
472         int r, c = 0;
473         UnitInfo u;
474
475         assert(bus);
476         assert(_reply);
477         assert(_unit_infos);
478
479         r = sd_bus_call_method(
480                         bus,
481                         "org.freedesktop.systemd1",
482                         "/org/freedesktop/systemd1",
483                         "org.freedesktop.systemd1.Manager",
484                         "ListUnits",
485                         &error,
486                         &reply,
487                         NULL);
488         if (r < 0) {
489                 log_error("Failed to list units: %s", bus_error_message(&error, r));
490                 return r;
491         }
492
493         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssssouso)");
494         if (r < 0)
495                 return bus_log_parse_error(r);
496
497         while ((r = bus_parse_unit_info(reply, &u)) > 0) {
498                 if (!output_show_unit(&u, patterns))
499                         continue;
500
501                 if (!GREEDY_REALLOC(unit_infos, size, c+1))
502                         return log_oom();
503
504                 unit_infos[c++] = u;
505         }
506         if (r < 0)
507                 return bus_log_parse_error(r);
508
509         r = sd_bus_message_exit_container(reply);
510         if (r < 0)
511                 return bus_log_parse_error(r);
512
513         *_reply = reply;
514         reply = NULL;
515
516         *_unit_infos = unit_infos;
517         unit_infos = NULL;
518
519         return c;
520 }
521
522 static int list_units(sd_bus *bus, char **args) {
523         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
524         _cleanup_free_ UnitInfo *unit_infos = NULL;
525         int r;
526
527         pager_open_if_enabled();
528
529         r = get_unit_list(bus, &reply, &unit_infos, strv_skip_first(args));
530         if (r < 0)
531                 return r;
532
533         qsort_safe(unit_infos, r, sizeof(UnitInfo), compare_unit_info);
534         output_units_list(unit_infos, r);
535
536         return 0;
537 }
538
539 static int get_triggered_units(
540                 sd_bus *bus,
541                 const char* path,
542                 char*** ret) {
543
544         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
545         int r;
546
547         r = sd_bus_get_property_strv(
548                         bus,
549                         "org.freedesktop.systemd1",
550                         path,
551                         "org.freedesktop.systemd1.Unit",
552                         "Triggers",
553                         &error,
554                         ret);
555
556         if (r < 0)
557                 log_error("Failed to determine triggers: %s", bus_error_message(&error, r));
558
559         return 0;
560 }
561
562 static int get_listening(
563                 sd_bus *bus,
564                 const char* unit_path,
565                 char*** listening) {
566
567         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
568         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
569         const char *type, *path;
570         int r, n = 0;
571
572         r = sd_bus_get_property(
573                         bus,
574                         "org.freedesktop.systemd1",
575                         unit_path,
576                         "org.freedesktop.systemd1.Socket",
577                         "Listen",
578                         &error,
579                         &reply,
580                         "a(ss)");
581         if (r < 0) {
582                 log_error("Failed to get list of listening sockets: %s", bus_error_message(&error, r));
583                 return r;
584         }
585
586         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ss)");
587         if (r < 0)
588                 return bus_log_parse_error(r);
589
590         while ((r = sd_bus_message_read(reply, "(ss)", &type, &path)) > 0) {
591
592                 r = strv_extend(listening, type);
593                 if (r < 0)
594                         return log_oom();
595
596                 r = strv_extend(listening, path);
597                 if (r < 0)
598                         return log_oom();
599
600                 n++;
601         }
602         if (r < 0)
603                 return bus_log_parse_error(r);
604
605         r = sd_bus_message_exit_container(reply);
606         if (r < 0)
607                 return bus_log_parse_error(r);
608
609         return n;
610 }
611
612 struct socket_info {
613         const char* id;
614
615         char* type;
616         char* path;
617
618         /* Note: triggered is a list here, although it almost certainly
619          * will always be one unit. Nevertheless, dbus API allows for multiple
620          * values, so let's follow that.*/
621         char** triggered;
622
623         /* The strv above is shared. free is set only in the first one. */
624         bool own_triggered;
625 };
626
627 static int socket_info_compare(const struct socket_info *a, const struct socket_info *b) {
628         int o;
629
630         assert(a);
631         assert(b);
632
633         o = strcmp(a->path, b->path);
634         if (o == 0)
635                 o = strcmp(a->type, b->type);
636
637         return o;
638 }
639
640 static int output_sockets_list(struct socket_info *socket_infos, unsigned cs) {
641         struct socket_info *s;
642         unsigned pathlen = sizeof("LISTEN") - 1,
643                 typelen = (sizeof("TYPE") - 1) * arg_show_types,
644                 socklen = sizeof("UNIT") - 1,
645                 servlen = sizeof("ACTIVATES") - 1;
646         const char *on, *off;
647
648         for (s = socket_infos; s < socket_infos + cs; s++) {
649                 unsigned tmp = 0;
650                 char **a;
651
652                 socklen = MAX(socklen, strlen(s->id));
653                 if (arg_show_types)
654                         typelen = MAX(typelen, strlen(s->type));
655                 pathlen = MAX(pathlen, strlen(s->path));
656
657                 STRV_FOREACH(a, s->triggered)
658                         tmp += strlen(*a) + 2*(a != s->triggered);
659                 servlen = MAX(servlen, tmp);
660         }
661
662         if (cs) {
663                 if (!arg_no_legend)
664                         printf("%-*s %-*.*s%-*s %s\n",
665                                pathlen, "LISTEN",
666                                typelen + arg_show_types, typelen + arg_show_types, "TYPE ",
667                                socklen, "UNIT",
668                                "ACTIVATES");
669
670                 for (s = socket_infos; s < socket_infos + cs; s++) {
671                         char **a;
672
673                         if (arg_show_types)
674                                 printf("%-*s %-*s %-*s",
675                                        pathlen, s->path, typelen, s->type, socklen, s->id);
676                         else
677                                 printf("%-*s %-*s",
678                                        pathlen, s->path, socklen, s->id);
679                         STRV_FOREACH(a, s->triggered)
680                                 printf("%s %s",
681                                        a == s->triggered ? "" : ",", *a);
682                         printf("\n");
683                 }
684
685                 on = ansi_highlight();
686                 off = ansi_highlight_off();
687                 if (!arg_no_legend)
688                         printf("\n");
689         } else {
690                 on = ansi_highlight_red();
691                 off = ansi_highlight_off();
692         }
693
694         if (!arg_no_legend) {
695                 printf("%s%u sockets listed.%s\n", on, cs, off);
696                 if (!arg_all)
697                         printf("Pass --all to see loaded but inactive sockets, too.\n");
698         }
699
700         return 0;
701 }
702
703 static int list_sockets(sd_bus *bus, char **args) {
704         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
705         _cleanup_free_ UnitInfo *unit_infos = NULL;
706         _cleanup_free_ struct socket_info *socket_infos = NULL;
707         const UnitInfo *u;
708         struct socket_info *s;
709         unsigned cs = 0;
710         size_t size = 0;
711         int r = 0, n;
712
713         pager_open_if_enabled();
714
715         n = get_unit_list(bus, &reply, &unit_infos, strv_skip_first(args));
716         if (n < 0)
717                 return n;
718
719         for (u = unit_infos; u < unit_infos + n; u++) {
720                 _cleanup_strv_free_ char **listening = NULL, **triggered = NULL;
721                 int i, c;
722
723                 if (!endswith(u->id, ".socket"))
724                         continue;
725
726                 r = get_triggered_units(bus, u->unit_path, &triggered);
727                 if (r < 0)
728                         goto cleanup;
729
730                 c = get_listening(bus, u->unit_path, &listening);
731                 if (c < 0) {
732                         r = c;
733                         goto cleanup;
734                 }
735
736                 if (!GREEDY_REALLOC(socket_infos, size, cs + c)) {
737                         r = log_oom();
738                         goto cleanup;
739                 }
740
741                 for (i = 0; i < c; i++)
742                         socket_infos[cs + i] = (struct socket_info) {
743                                 .id = u->id,
744                                 .type = listening[i*2],
745                                 .path = listening[i*2 + 1],
746                                 .triggered = triggered,
747                                 .own_triggered = i==0,
748                         };
749
750                 /* from this point on we will cleanup those socket_infos */
751                 cs += c;
752                 free(listening);
753                 listening = triggered = NULL; /* avoid cleanup */
754         }
755
756         qsort_safe(socket_infos, cs, sizeof(struct socket_info),
757                    (__compar_fn_t) socket_info_compare);
758
759         output_sockets_list(socket_infos, cs);
760
761  cleanup:
762         assert(cs == 0 || socket_infos);
763         for (s = socket_infos; s < socket_infos + cs; s++) {
764                 free(s->type);
765                 free(s->path);
766                 if (s->own_triggered)
767                         strv_free(s->triggered);
768         }
769
770         return r;
771 }
772
773 static int get_next_elapse(
774                 sd_bus *bus,
775                 const char *path,
776                 dual_timestamp *next) {
777
778         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
779         dual_timestamp t;
780         int r;
781
782         assert(bus);
783         assert(path);
784         assert(next);
785
786         r = sd_bus_get_property_trivial(
787                         bus,
788                         "org.freedesktop.systemd1",
789                         path,
790                         "org.freedesktop.systemd1.Timer",
791                         "NextElapseUSecMonotonic",
792                         &error,
793                         't',
794                         &t.monotonic);
795         if (r < 0) {
796                 log_error("Failed to get next elapsation time: %s", bus_error_message(&error, r));
797                 return r;
798         }
799
800         r = sd_bus_get_property_trivial(
801                         bus,
802                         "org.freedesktop.systemd1",
803                         path,
804                         "org.freedesktop.systemd1.Timer",
805                         "NextElapseUSecRealtime",
806                         &error,
807                         't',
808                         &t.realtime);
809         if (r < 0) {
810                 log_error("Failed to get next elapsation time: %s", bus_error_message(&error, r));
811                 return r;
812         }
813
814         *next = t;
815         return 0;
816 }
817
818 struct timer_info {
819         const char* id;
820         usec_t next_elapse;
821         char** triggered;
822 };
823
824 static int timer_info_compare(const struct timer_info *a, const struct timer_info *b) {
825         assert(a);
826         assert(b);
827
828         if (a->next_elapse < b->next_elapse)
829                 return -1;
830         if (a->next_elapse > b->next_elapse)
831                 return 1;
832
833         return strcmp(a->id, b->id);
834 }
835
836 static int output_timers_list(struct timer_info *timer_infos, unsigned n) {
837         struct timer_info *t;
838         unsigned
839                 nextlen = sizeof("NEXT") - 1,
840                 leftlen = sizeof("LEFT") - 1,
841                 unitlen = sizeof("UNIT") - 1,
842                 activatelen = sizeof("ACTIVATES") - 1;
843
844         const char *on, *off;
845
846         assert(timer_infos || n == 0);
847
848         for (t = timer_infos; t < timer_infos + n; t++) {
849                 unsigned ul = 0;
850                 char **a;
851
852                 if (t->next_elapse > 0) {
853                         char tstamp[FORMAT_TIMESTAMP_MAX] = "", trel[FORMAT_TIMESTAMP_RELATIVE_MAX] = "";
854
855                         format_timestamp(tstamp, sizeof(tstamp), t->next_elapse);
856                         nextlen = MAX(nextlen, strlen(tstamp) + 1);
857
858                         format_timestamp_relative(trel, sizeof(trel), t->next_elapse);
859                         leftlen = MAX(leftlen, strlen(trel));
860                 }
861
862                 unitlen = MAX(unitlen, strlen(t->id));
863
864                 STRV_FOREACH(a, t->triggered)
865                         ul += strlen(*a) + 2*(a != t->triggered);
866                 activatelen = MAX(activatelen, ul);
867         }
868
869         if (n > 0) {
870                 if (!arg_no_legend)
871                         printf("%-*s %-*s %-*s %s\n",
872                                nextlen, "NEXT",
873                                leftlen, "LEFT",
874                                unitlen, "UNIT",
875                                         "ACTIVATES");
876
877                 for (t = timer_infos; t < timer_infos + n; t++) {
878                         char tstamp[FORMAT_TIMESTAMP_MAX] = "n/a", trel[FORMAT_TIMESTAMP_RELATIVE_MAX] = "n/a";
879                         char **a;
880
881                         format_timestamp(tstamp, sizeof(tstamp), t->next_elapse);
882                         format_timestamp_relative(trel, sizeof(trel), t->next_elapse);
883
884                         printf("%-*s %-*s %-*s",
885                                nextlen, tstamp, leftlen, trel, unitlen, t->id);
886
887                         STRV_FOREACH(a, t->triggered)
888                                 printf("%s %s",
889                                        a == t->triggered ? "" : ",", *a);
890                         printf("\n");
891                 }
892
893                 on = ansi_highlight();
894                 off = ansi_highlight_off();
895                 if (!arg_no_legend)
896                         printf("\n");
897         } else {
898                 on = ansi_highlight_red();
899                 off = ansi_highlight_off();
900         }
901
902         if (!arg_no_legend) {
903                 printf("%s%u timers listed.%s\n", on, n, off);
904                 if (!arg_all)
905                         printf("Pass --all to see loaded but inactive timers, too.\n");
906         }
907
908         return 0;
909 }
910
911 static int list_timers(sd_bus *bus, char **args) {
912
913         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
914         _cleanup_free_ struct timer_info *timer_infos = NULL;
915         _cleanup_free_ UnitInfo *unit_infos = NULL;
916         struct timer_info *t;
917         const UnitInfo *u;
918         size_t size = 0;
919         int n, c = 0;
920         dual_timestamp nw;
921         int r = 0;
922
923         pager_open_if_enabled();
924
925         n = get_unit_list(bus, &reply, &unit_infos, strv_skip_first(args));
926         if (n < 0)
927                 return n;
928
929         dual_timestamp_get(&nw);
930
931         for (u = unit_infos; u < unit_infos + n; u++) {
932                 _cleanup_strv_free_ char **triggered = NULL;
933                 dual_timestamp next;
934                 usec_t m;
935
936                 if (!endswith(u->id, ".timer"))
937                         continue;
938
939                 r = get_triggered_units(bus, u->unit_path, &triggered);
940                 if (r < 0)
941                         goto cleanup;
942
943                 r = get_next_elapse(bus, u->unit_path, &next);
944                 if (r < 0)
945                         goto cleanup;
946
947                 if (next.monotonic != (usec_t) -1 && next.monotonic > 0) {
948                         usec_t converted;
949
950                         if (next.monotonic > nw.monotonic)
951                                 converted = nw.realtime + (next.monotonic - nw.monotonic);
952                         else
953                                 converted = nw.realtime - (nw.monotonic - next.monotonic);
954
955                         if (next.realtime != (usec_t) -1 && next.realtime > 0)
956                                 m = MIN(converted, next.realtime);
957                         else
958                                 m = converted;
959                 } else
960                         m = next.realtime;
961
962                 if (!GREEDY_REALLOC(timer_infos, size, c+1)) {
963                         r = log_oom();
964                         goto cleanup;
965                 }
966
967                 timer_infos[c++] = (struct timer_info) {
968                         .id = u->id,
969                         .next_elapse = m,
970                         .triggered = triggered,
971                 };
972
973                 triggered = NULL; /* avoid cleanup */
974         }
975
976         qsort_safe(timer_infos, c, sizeof(struct timer_info),
977                    (__compar_fn_t) timer_info_compare);
978
979         output_timers_list(timer_infos, c);
980
981  cleanup:
982         for (t = timer_infos; t < timer_infos + c; t++)
983                 strv_free(t->triggered);
984
985         return r;
986 }
987
988 static int compare_unit_file_list(const void *a, const void *b) {
989         const char *d1, *d2;
990         const UnitFileList *u = a, *v = b;
991
992         d1 = strrchr(u->path, '.');
993         d2 = strrchr(v->path, '.');
994
995         if (d1 && d2) {
996                 int r;
997
998                 r = strcasecmp(d1, d2);
999                 if (r != 0)
1000                         return r;
1001         }
1002
1003         return strcasecmp(basename(u->path), basename(v->path));
1004 }
1005
1006 static bool output_show_unit_file(const UnitFileList *u, char **patterns) {
1007         const char *dot;
1008
1009         if (!strv_isempty(patterns)) {
1010                 char **pattern;
1011
1012                 STRV_FOREACH(pattern, patterns)
1013                         if (fnmatch(*pattern, basename(u->path), FNM_NOESCAPE) == 0)
1014                                 return true;
1015                 return false;
1016         }
1017
1018         return !arg_types || ((dot = strrchr(u->path, '.')) && strv_find(arg_types, dot+1));
1019 }
1020
1021 static void output_unit_file_list(const UnitFileList *units, unsigned c) {
1022         unsigned max_id_len, id_cols, state_cols, n_shown = 0;
1023         const UnitFileList *u;
1024
1025         max_id_len = sizeof("UNIT FILE")-1;
1026         state_cols = sizeof("STATE")-1;
1027
1028         for (u = units; u < units + c; u++) {
1029                 max_id_len = MAX(max_id_len, strlen(basename(u->path)));
1030                 state_cols = MAX(state_cols, strlen(unit_file_state_to_string(u->state)));
1031         }
1032
1033         if (!arg_full) {
1034                 unsigned basic_cols;
1035
1036                 id_cols = MIN(max_id_len, 25u);
1037                 basic_cols = 1 + id_cols + state_cols;
1038                 if (basic_cols < (unsigned) columns())
1039                         id_cols += MIN(columns() - basic_cols, max_id_len - id_cols);
1040         } else
1041                 id_cols = max_id_len;
1042
1043         if (!arg_no_legend)
1044                 printf("%-*s %-*s\n",
1045                        id_cols, "UNIT FILE",
1046                        state_cols, "STATE");
1047
1048         for (u = units; u < units + c; u++) {
1049                 _cleanup_free_ char *e = NULL;
1050                 const char *on, *off;
1051                 const char *id;
1052
1053                 n_shown++;
1054
1055                 if (u->state == UNIT_FILE_MASKED ||
1056                     u->state == UNIT_FILE_MASKED_RUNTIME ||
1057                     u->state == UNIT_FILE_DISABLED ||
1058                     u->state == UNIT_FILE_INVALID) {
1059                         on  = ansi_highlight_red();
1060                         off = ansi_highlight_off();
1061                 } else if (u->state == UNIT_FILE_ENABLED) {
1062                         on  = ansi_highlight_green();
1063                         off = ansi_highlight_off();
1064                 } else
1065                         on = off = "";
1066
1067                 id = basename(u->path);
1068
1069                 e = arg_full ? NULL : ellipsize(id, id_cols, 33);
1070
1071                 printf("%-*s %s%-*s%s\n",
1072                        id_cols, e ? e : id,
1073                        on, state_cols, unit_file_state_to_string(u->state), off);
1074         }
1075
1076         if (!arg_no_legend)
1077                 printf("\n%u unit files listed.\n", n_shown);
1078 }
1079
1080 static int list_unit_files(sd_bus *bus, char **args) {
1081         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1082         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1083         _cleanup_free_ UnitFileList *units = NULL;
1084         UnitFileList *unit;
1085         size_t size = 0;
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                         if (!output_show_unit_file(u, strv_skip_first(args)))
1119                                 continue;
1120
1121                         units[c++] = *u;
1122                         free(u);
1123                 }
1124
1125                 assert(c <= n_units);
1126                 hashmap_free(h);
1127         } else {
1128                 r = sd_bus_call_method(
1129                                 bus,
1130                                 "org.freedesktop.systemd1",
1131                                 "/org/freedesktop/systemd1",
1132                                 "org.freedesktop.systemd1.Manager",
1133                                 "ListUnitFiles",
1134                                 &error,
1135                                 &reply,
1136                                 NULL);
1137                 if (r < 0) {
1138                         log_error("Failed to list unit files: %s", bus_error_message(&error, r));
1139                         return r;
1140                 }
1141
1142                 r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ss)");
1143                 if (r < 0)
1144                         return bus_log_parse_error(r);
1145
1146                 while ((r = sd_bus_message_read(reply, "(ss)", &path, &state)) > 0) {
1147
1148                         if (!GREEDY_REALLOC(units, size, c + 1))
1149                                 return log_oom();
1150
1151                         units[c] = (struct UnitFileList) {
1152                                 path,
1153                                 unit_file_state_from_string(state)
1154                         };
1155
1156                         if (output_show_unit_file(&units[c], strv_skip_first(args)))
1157                                 c ++;
1158
1159                 }
1160                 if (r < 0)
1161                         return bus_log_parse_error(r);
1162
1163                 r = sd_bus_message_exit_container(reply);
1164                 if (r < 0)
1165                         return bus_log_parse_error(r);
1166         }
1167
1168         if (c > 0) {
1169                 qsort(units, c, sizeof(UnitFileList), compare_unit_file_list);
1170                 output_unit_file_list(units, c);
1171         }
1172
1173         if (avoid_bus())
1174                 for (unit = units; unit < units + c; unit++)
1175                         free(unit->path);
1176
1177         return 0;
1178 }
1179
1180 static int list_dependencies_print(const char *name, int level, unsigned int branches, bool last) {
1181         _cleanup_free_ char *n = NULL;
1182         size_t max_len = MAX(columns(),20u);
1183         size_t len = 0;
1184         int i;
1185
1186         if (!arg_plain) {
1187
1188                 for (i = level - 1; i >= 0; i--) {
1189                         len += 2;
1190                         if (len > max_len - 3 && !arg_full) {
1191                                 printf("%s...\n",max_len % 2 ? "" : " ");
1192                                 return 0;
1193                         }
1194                         printf("%s", draw_special_char(branches & (1 << i) ? DRAW_TREE_VERT : DRAW_TREE_SPACE));
1195                 }
1196                 len += 2;
1197
1198                 if (len > max_len - 3 && !arg_full) {
1199                         printf("%s...\n",max_len % 2 ? "" : " ");
1200                         return 0;
1201                 }
1202
1203                 printf("%s", draw_special_char(last ? DRAW_TREE_RIGHT : DRAW_TREE_BRANCH));
1204         }
1205
1206         if (arg_full){
1207                 printf("%s\n", name);
1208                 return 0;
1209         }
1210
1211         n = ellipsize(name, max_len-len, 100);
1212         if (!n)
1213                 return log_oom();
1214
1215         printf("%s\n", n);
1216         return 0;
1217 }
1218
1219 static int list_dependencies_get_dependencies(sd_bus *bus, const char *name, char ***deps) {
1220
1221         static const char *dependencies[_DEPENDENCY_MAX] = {
1222                 [DEPENDENCY_FORWARD] = "Requires\0"
1223                                        "RequiresOverridable\0"
1224                                        "Requisite\0"
1225                                        "RequisiteOverridable\0"
1226                                        "Wants\0",
1227                 [DEPENDENCY_REVERSE] = "RequiredBy\0"
1228                                        "RequiredByOverridable\0"
1229                                        "WantedBy\0"
1230                                        "PartOf\0",
1231                 [DEPENDENCY_AFTER]   = "After\0",
1232                 [DEPENDENCY_BEFORE]  = "Before\0",
1233         };
1234
1235         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1236         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1237         _cleanup_strv_free_ char **ret = NULL;
1238         _cleanup_free_ char *path = NULL;
1239         int r;
1240
1241         assert(bus);
1242         assert(name);
1243         assert(deps);
1244         assert_cc(ELEMENTSOF(dependencies) == _DEPENDENCY_MAX);
1245
1246         path = unit_dbus_path_from_name(name);
1247         if (!path)
1248                 return log_oom();
1249
1250         r = sd_bus_call_method(
1251                         bus,
1252                         "org.freedesktop.systemd1",
1253                         path,
1254                         "org.freedesktop.DBus.Properties",
1255                         "GetAll",
1256                         &error,
1257                         &reply,
1258                         "s", "org.freedesktop.systemd1.Unit");
1259         if (r < 0) {
1260                 log_error("Failed to get properties of %s: %s", name, bus_error_message(&error, r));
1261                 return r;
1262         }
1263
1264         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "{sv}");
1265         if (r < 0)
1266                 return bus_log_parse_error(r);
1267
1268         while ((r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) {
1269                 const char *prop;
1270
1271                 r = sd_bus_message_read(reply, "s", &prop);
1272                 if (r < 0)
1273                         return bus_log_parse_error(r);
1274
1275                 if (!nulstr_contains(dependencies[arg_dependency], prop)) {
1276                         r = sd_bus_message_skip(reply, "v");
1277                         if (r < 0)
1278                                 return bus_log_parse_error(r);
1279                 } else {
1280
1281                         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_VARIANT, "as");
1282                         if (r < 0)
1283                                 return bus_log_parse_error(r);
1284
1285                         r = bus_message_read_strv_extend(reply, &ret);
1286                         if (r < 0)
1287                                 return bus_log_parse_error(r);
1288
1289                         r = sd_bus_message_exit_container(reply);
1290                         if (r < 0)
1291                                 return bus_log_parse_error(r);
1292                 }
1293
1294                 r = sd_bus_message_exit_container(reply);
1295                 if (r < 0)
1296                         return bus_log_parse_error(r);
1297
1298         }
1299         if (r < 0)
1300                 return bus_log_parse_error(r);
1301
1302         r = sd_bus_message_exit_container(reply);
1303         if (r < 0)
1304                 return bus_log_parse_error(r);
1305
1306         *deps = ret;
1307         ret = NULL;
1308
1309         return 0;
1310 }
1311
1312 static int list_dependencies_compare(const void *_a, const void *_b) {
1313         const char **a = (const char**) _a, **b = (const char**) _b;
1314
1315         if (unit_name_to_type(*a) == UNIT_TARGET && unit_name_to_type(*b) != UNIT_TARGET)
1316                 return 1;
1317         if (unit_name_to_type(*a) != UNIT_TARGET && unit_name_to_type(*b) == UNIT_TARGET)
1318                 return -1;
1319
1320         return strcasecmp(*a, *b);
1321 }
1322
1323 static int list_dependencies_one(
1324                 sd_bus *bus,
1325                 const char *name,
1326                 int level,
1327                 char ***units,
1328                 unsigned int branches) {
1329
1330         _cleanup_strv_free_ char **deps = NULL, **u;
1331         char **c;
1332         int r = 0;
1333
1334         assert(bus);
1335         assert(name);
1336         assert(units);
1337
1338         u = strv_append(*units, name);
1339         if (!u)
1340                 return log_oom();
1341
1342         r = list_dependencies_get_dependencies(bus, name, &deps);
1343         if (r < 0)
1344                 return r;
1345
1346         qsort_safe(deps, strv_length(deps), sizeof (char*), list_dependencies_compare);
1347
1348         STRV_FOREACH(c, deps) {
1349                 int state;
1350
1351                 if (strv_contains(u, *c)) {
1352                         if (!arg_plain) {
1353                                 r = list_dependencies_print("...", level + 1, (branches << 1) | (c[1] == NULL ? 0 : 1), 1);
1354                                 if (r < 0)
1355                                         return r;
1356                         }
1357                         continue;
1358                 }
1359
1360                 state = check_one_unit(bus, *c, "activating\0active\0reloading\0", true);
1361                 if (state > 0)
1362                         printf("%s%s%s", ansi_highlight_green(), draw_special_char(DRAW_BLACK_CIRCLE), ansi_highlight_off());
1363                 else
1364                         printf("%s%s%s", ansi_highlight_red(), draw_special_char(DRAW_BLACK_CIRCLE), ansi_highlight_off());
1365
1366                 r = list_dependencies_print(*c, level, branches, c[1] == NULL);
1367                 if (r < 0)
1368                         return r;
1369
1370                 if (arg_all || unit_name_to_type(*c) == UNIT_TARGET) {
1371                        r = list_dependencies_one(bus, *c, level + 1, &u, (branches << 1) | (c[1] == NULL ? 0 : 1));
1372                        if (r < 0)
1373                                return r;
1374                 }
1375         }
1376
1377         if (arg_plain) {
1378                 strv_free(*units);
1379                 *units = u;
1380                 u = NULL;
1381         }
1382
1383         return 0;
1384 }
1385
1386 static int list_dependencies(sd_bus *bus, char **args) {
1387         _cleanup_strv_free_ char **units = NULL;
1388         _cleanup_free_ char *unit = NULL;
1389         const char *u;
1390
1391         assert(bus);
1392
1393         if (args[1]) {
1394                 unit = unit_name_mangle(args[1], MANGLE_NOGLOB);
1395                 if (!unit)
1396                         return log_oom();
1397                 u = unit;
1398         } else
1399                 u = SPECIAL_DEFAULT_TARGET;
1400
1401         pager_open_if_enabled();
1402
1403         puts(u);
1404
1405         return list_dependencies_one(bus, u, 0, &units, 0);
1406 }
1407
1408 static int get_default(sd_bus *bus, char **args) {
1409         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1410         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1411         _cleanup_free_ char *_path = NULL;
1412         const char *path;
1413         int r;
1414
1415         if (!bus || avoid_bus()) {
1416                 r = unit_file_get_default(arg_scope, arg_root, &_path);
1417                 if (r < 0) {
1418                         log_error("Failed to get default target: %s", strerror(-r));
1419                         return r;
1420                 }
1421                 path = _path;
1422
1423         } else {
1424                 r = sd_bus_call_method(
1425                                 bus,
1426                                 "org.freedesktop.systemd1",
1427                                 "/org/freedesktop/systemd1",
1428                                 "org.freedesktop.systemd1.Manager",
1429                                 "GetDefaultTarget",
1430                                 &error,
1431                                 &reply,
1432                                 NULL);
1433                 if (r < 0) {
1434                         log_error("Failed to get default target: %s", bus_error_message(&error, -r));
1435                         return r;
1436                 }
1437
1438                 r = sd_bus_message_read(reply, "s", &path);
1439                 if (r < 0)
1440                         return bus_log_parse_error(r);
1441         }
1442
1443         if (path)
1444                 printf("%s\n", path);
1445
1446         return 0;
1447 }
1448
1449 static void dump_unit_file_changes(const UnitFileChange *changes, unsigned n_changes) {
1450         unsigned i;
1451
1452         assert(changes || n_changes == 0);
1453
1454         for (i = 0; i < n_changes; i++) {
1455                 if (changes[i].type == UNIT_FILE_SYMLINK)
1456                         log_info("ln -s '%s' '%s'", changes[i].source, changes[i].path);
1457                 else
1458                         log_info("rm '%s'", changes[i].path);
1459         }
1460 }
1461
1462 static int deserialize_and_dump_unit_file_changes(sd_bus_message *m) {
1463         const char *type, *path, *source;
1464         int r;
1465
1466         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sss)");
1467         if (r < 0)
1468                 return bus_log_parse_error(r);
1469
1470         while ((r = sd_bus_message_read(m, "(sss)", &type, &path, &source)) > 0) {
1471                 if (!arg_quiet) {
1472                         if (streq(type, "symlink"))
1473                                 log_info("ln -s '%s' '%s'", source, path);
1474                         else
1475                                 log_info("rm '%s'", path);
1476                 }
1477         }
1478         if (r < 0)
1479                 return bus_log_parse_error(r);
1480
1481         r = sd_bus_message_exit_container(m);
1482         if (r < 0)
1483                 return bus_log_parse_error(r);
1484
1485         return 0;
1486 }
1487
1488 static int set_default(sd_bus *bus, char **args) {
1489         _cleanup_free_ char *unit = NULL;
1490         UnitFileChange *changes = NULL;
1491         unsigned n_changes = 0;
1492         int r;
1493
1494         unit = unit_name_mangle_with_suffix(args[1], MANGLE_NOGLOB, ".target");
1495         if (!unit)
1496                 return log_oom();
1497
1498         if (!bus || avoid_bus()) {
1499                 r = unit_file_set_default(arg_scope, arg_root, unit, arg_force, &changes, &n_changes);
1500                 if (r < 0) {
1501                         log_error("Failed to set default target: %s", strerror(-r));
1502                         return r;
1503                 }
1504
1505                 if (!arg_quiet)
1506                         dump_unit_file_changes(changes, n_changes);
1507
1508                 r = 0;
1509         } else {
1510                 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1511                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1512
1513                 r = sd_bus_call_method(
1514                                 bus,
1515                                 "org.freedesktop.systemd1",
1516                                 "/org/freedesktop/systemd1",
1517                                 "org.freedesktop.systemd1.Manager",
1518                                 "SetDefaultTarget",
1519                                 &error,
1520                                 &reply,
1521                                 "sb", unit, arg_force);
1522                 if (r < 0) {
1523                         log_error("Failed to set default target: %s", bus_error_message(&error, -r));
1524                         return r;
1525                 }
1526
1527                 r = deserialize_and_dump_unit_file_changes(reply);
1528                 if (r < 0)
1529                         return r;
1530
1531                 /* Try to reload if enabeld */
1532                 if (!arg_no_reload)
1533                         r = daemon_reload(bus, args);
1534                 else
1535                         r = 0;
1536         }
1537
1538         unit_file_changes_free(changes, n_changes);
1539
1540         return r;
1541 }
1542
1543 struct job_info {
1544         uint32_t id;
1545         const char *name, *type, *state;
1546 };
1547
1548 static void output_jobs_list(const struct job_info* jobs, unsigned n, bool skipped) {
1549         unsigned id_len, unit_len, type_len, state_len;
1550         const struct job_info *j;
1551         const char *on, *off;
1552         bool shorten = false;
1553
1554         assert(n == 0 || jobs);
1555
1556         if (n == 0) {
1557                 on = ansi_highlight_green();
1558                 off = ansi_highlight_off();
1559
1560                 printf("%sNo jobs %s.%s\n", on, skipped ? "listed" : "running", off);
1561                 return;
1562         }
1563
1564         pager_open_if_enabled();
1565
1566         id_len = sizeof("JOB")-1;
1567         unit_len = sizeof("UNIT")-1;
1568         type_len = sizeof("TYPE")-1;
1569         state_len = sizeof("STATE")-1;
1570
1571         for (j = jobs; j < jobs + n; j++) {
1572                 uint32_t id = j->id;
1573                 assert(j->name && j->type && j->state);
1574
1575                 id_len = MAX(id_len, DECIMAL_STR_WIDTH(id));
1576                 unit_len = MAX(unit_len, strlen(j->name));
1577                 type_len = MAX(type_len, strlen(j->type));
1578                 state_len = MAX(state_len, strlen(j->state));
1579         }
1580
1581         if (!arg_full && id_len + 1 + unit_len + type_len + 1 + state_len > columns()) {
1582                 unit_len = MAX(33u, columns() - id_len - type_len - state_len - 3);
1583                 shorten = true;
1584         }
1585
1586         if (!arg_no_legend)
1587                 printf("%*s %-*s %-*s %-*s\n",
1588                        id_len, "JOB",
1589                        unit_len, "UNIT",
1590                        type_len, "TYPE",
1591                        state_len, "STATE");
1592
1593         for (j = jobs; j < jobs + n; j++) {
1594                 _cleanup_free_ char *e = NULL;
1595
1596                 if (streq(j->state, "running")) {
1597                         on = ansi_highlight();
1598                         off = ansi_highlight_off();
1599                 } else
1600                         on = off = "";
1601
1602                 e = shorten ? ellipsize(j->name, unit_len, 33) : NULL;
1603                 printf("%*u %s%-*s%s %-*s %s%-*s%s\n",
1604                        id_len, j->id,
1605                        on, unit_len, e ? e : j->name, off,
1606                        type_len, j->type,
1607                        on, state_len, j->state, off);
1608         }
1609
1610         if (!arg_no_legend) {
1611                 on = ansi_highlight();
1612                 off = ansi_highlight_off();
1613
1614                 printf("\n%s%u jobs listed%s.\n", on, n, off);
1615         }
1616 }
1617
1618 static bool output_show_job(struct job_info *job, char **patterns) {
1619         if (!strv_isempty(patterns)) {
1620                 char **pattern;
1621
1622                 STRV_FOREACH(pattern, patterns)
1623                         if (fnmatch(*pattern, job->name, FNM_NOESCAPE) == 0)
1624                                 return true;
1625                 return false;
1626         }
1627
1628         return true;
1629 }
1630
1631 static int list_jobs(sd_bus *bus, char **args) {
1632         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1633         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1634         const char *name, *type, *state, *job_path, *unit_path;
1635         _cleanup_free_ struct job_info *jobs = NULL;
1636         size_t size = 0;
1637         unsigned c = 0;
1638         uint32_t id;
1639         int r;
1640         bool skipped = false;
1641
1642         r = sd_bus_call_method(
1643                         bus,
1644                         "org.freedesktop.systemd1",
1645                         "/org/freedesktop/systemd1",
1646                         "org.freedesktop.systemd1.Manager",
1647                         "ListJobs",
1648                         &error,
1649                         &reply,
1650                         NULL);
1651         if (r < 0) {
1652                 log_error("Failed to list jobs: %s", bus_error_message(&error, r));
1653                 return r;
1654         }
1655
1656         r = sd_bus_message_enter_container(reply, 'a', "(usssoo)");
1657         if (r < 0)
1658                 return bus_log_parse_error(r);
1659
1660         while ((r = sd_bus_message_read(reply, "(usssoo)", &id, &name, &type, &state, &job_path, &unit_path)) > 0) {
1661                 struct job_info job = { id, name, type, state };
1662
1663                 if (!output_show_job(&job, strv_skip_first(args))) {
1664                         skipped = true;
1665                         continue;
1666                 }
1667
1668                 if (!GREEDY_REALLOC(jobs, size, c + 1))
1669                         return log_oom();
1670
1671                 jobs[c++] = job;
1672         }
1673         if (r < 0)
1674                 return bus_log_parse_error(r);
1675
1676         r = sd_bus_message_exit_container(reply);
1677         if (r < 0)
1678                 return bus_log_parse_error(r);
1679
1680         output_jobs_list(jobs, c, skipped);
1681         return r;
1682 }
1683
1684 static int cancel_job(sd_bus *bus, char **args) {
1685         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1686         char **name;
1687
1688         assert(args);
1689
1690         if (strv_length(args) <= 1)
1691                 return daemon_reload(bus, args);
1692
1693         STRV_FOREACH(name, args+1) {
1694                 uint32_t id;
1695                 int r;
1696
1697                 r = safe_atou32(*name, &id);
1698                 if (r < 0) {
1699                         log_error("Failed to parse job id \"%s\": %s", *name, strerror(-r));
1700                         return r;
1701                 }
1702
1703                 r = sd_bus_call_method(
1704                                 bus,
1705                                 "org.freedesktop.systemd1",
1706                                 "/org/freedesktop/systemd1",
1707                                 "org.freedesktop.systemd1.Manager",
1708                                 "CancelJob",
1709                                 &error,
1710                                 NULL,
1711                                 "u", id);
1712                 if (r < 0) {
1713                         log_error("Failed to cancel job %u: %s", (unsigned) id, bus_error_message(&error, r));
1714                         return r;
1715                 }
1716         }
1717
1718         return 0;
1719 }
1720
1721 static int need_daemon_reload(sd_bus *bus, const char *unit) {
1722         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1723         const char *path;
1724         int b, r;
1725
1726         /* We ignore all errors here, since this is used to show a
1727          * warning only */
1728
1729         /* We don't use unit_dbus_path_from_name() directly since we
1730          * don't want to load the unit if it isn't loaded. */
1731
1732         r = sd_bus_call_method(
1733                         bus,
1734                         "org.freedesktop.systemd1",
1735                         "/org/freedesktop/systemd1",
1736                         "org.freedesktop.systemd1.Manager",
1737                         "GetUnit",
1738                         NULL,
1739                         &reply,
1740                         "s", unit);
1741         if (r < 0)
1742                 return r;
1743
1744         r = sd_bus_message_read(reply, "o", &path);
1745         if (r < 0)
1746                 return r;
1747
1748         r = sd_bus_get_property_trivial(
1749                         bus,
1750                         "org.freedesktop.systemd1",
1751                         path,
1752                         "org.freedesktop.systemd1.Unit",
1753                         "NeedDaemonReload",
1754                         NULL,
1755                         'b', &b);
1756         if (r < 0)
1757                 return r;
1758
1759         return b;
1760 }
1761
1762 typedef struct WaitData {
1763         Set *set;
1764
1765         char *name;
1766         char *result;
1767 } WaitData;
1768
1769 static int wait_filter(sd_bus *bus, sd_bus_message *m, void *data, sd_bus_error *error) {
1770         WaitData *d = data;
1771
1772         assert(bus);
1773         assert(m);
1774         assert(d);
1775
1776         log_debug("Got D-Bus request: %s.%s() on %s",
1777                   sd_bus_message_get_interface(m),
1778                   sd_bus_message_get_member(m),
1779                   sd_bus_message_get_path(m));
1780
1781         if (sd_bus_message_is_signal(m, "org.freedesktop.DBus.Local", "Disconnected")) {
1782                 log_error("Warning! D-Bus connection terminated.");
1783                 sd_bus_close(bus);
1784         } else if (sd_bus_message_is_signal(m, "org.freedesktop.systemd1.Manager", "JobRemoved")) {
1785                 uint32_t id;
1786                 const char *path, *result, *unit;
1787                 char *ret;
1788                 int r;
1789
1790                 r = sd_bus_message_read(m, "uoss", &id, &path, &unit, &result);
1791                 if (r >= 0) {
1792                         ret = set_remove(d->set, (char*) path);
1793                         if (!ret)
1794                                 return 0;
1795
1796                         free(ret);
1797
1798                         if (!isempty(result))
1799                                 d->result = strdup(result);
1800
1801                         if (!isempty(unit))
1802                                 d->name = strdup(unit);
1803
1804                         return 0;
1805                 }
1806 #ifndef NOLEGACY
1807                 r = sd_bus_message_read(m, "uos", &id, &path, &result);
1808                 if (r >= 0) {
1809                         ret = set_remove(d->set, (char*) path);
1810                         if (!ret)
1811                                 return 0;
1812
1813                         free(ret);
1814
1815                         if (*result)
1816                                 d->result = strdup(result);
1817
1818                         return 0;
1819                 }
1820 #endif
1821
1822                 bus_log_parse_error(r);
1823         }
1824
1825         return 0;
1826 }
1827
1828 static int enable_wait_for_jobs(sd_bus *bus) {
1829         int r;
1830
1831         assert(bus);
1832
1833         r = sd_bus_add_match(
1834                         bus,
1835                         "type='signal',"
1836                         "sender='org.freedesktop.systemd1',"
1837                         "interface='org.freedesktop.systemd1.Manager',"
1838                         "member='JobRemoved',"
1839                         "path='/org/freedesktop/systemd1'",
1840                         NULL, NULL);
1841         if (r < 0) {
1842                 log_error("Failed to add match");
1843                 return -EIO;
1844         }
1845
1846         /* This is slightly dirty, since we don't undo the match registrations. */
1847         return 0;
1848 }
1849
1850 static int bus_process_wait(sd_bus *bus) {
1851         int r;
1852
1853         for (;;) {
1854                 r = sd_bus_process(bus, NULL);
1855                 if (r < 0)
1856                         return r;
1857                 if (r > 0)
1858                         return 0;
1859                 r = sd_bus_wait(bus, (uint64_t) -1);
1860                 if (r < 0)
1861                         return r;
1862         }
1863 }
1864
1865 static int check_wait_response(WaitData *d) {
1866         int r = 0;
1867
1868         assert(d->result);
1869
1870         if (!arg_quiet) {
1871                 if (streq(d->result, "timeout"))
1872                         log_error("Job for %s timed out.", strna(d->name));
1873                 else if (streq(d->result, "canceled"))
1874                         log_error("Job for %s canceled.", strna(d->name));
1875                 else if (streq(d->result, "dependency"))
1876                         log_error("A dependency job for %s failed. See 'journalctl -xn' for details.", strna(d->name));
1877                 else if (!streq(d->result, "done") && !streq(d->result, "skipped"))
1878                         log_error("Job for %s failed. See 'systemctl status %s' and 'journalctl -xn' for details.", strna(d->name), strna(d->name));
1879         }
1880
1881         if (streq(d->result, "timeout"))
1882                 r = -ETIME;
1883         else if (streq(d->result, "canceled"))
1884                 r = -ECANCELED;
1885         else if (streq(d->result, "dependency"))
1886                 r = -EIO;
1887         else if (!streq(d->result, "done") && !streq(d->result, "skipped"))
1888                 r = -EIO;
1889
1890         return r;
1891 }
1892
1893 static int wait_for_jobs(sd_bus *bus, Set *s) {
1894         WaitData d = { .set = s };
1895         int r = 0, q;
1896
1897         assert(bus);
1898         assert(s);
1899
1900         q = sd_bus_add_filter(bus, wait_filter, &d);
1901         if (q < 0)
1902                 return log_oom();
1903
1904         while (!set_isempty(s)) {
1905                 q = bus_process_wait(bus);
1906                 if (q < 0) {
1907                         log_error("Failed to wait for response: %s", strerror(-r));
1908                         return q;
1909                 }
1910
1911                 if (d.result) {
1912                         q = check_wait_response(&d);
1913                         /* Return the first error as it is most likely to be
1914                          * meaningful. */
1915                         if (q < 0 && r == 0)
1916                                 r = q;
1917                         log_debug("Got result %s/%s for job %s",
1918                                   strna(d.result), strerror(-q), strna(d.name));
1919                 }
1920
1921                 free(d.name);
1922                 d.name = NULL;
1923
1924                 free(d.result);
1925                 d.result = NULL;
1926         }
1927
1928         q = sd_bus_remove_filter(bus, wait_filter, &d);
1929         if (q < 0 && r == 0)
1930                 r = q;
1931
1932         return r;
1933 }
1934
1935 static int check_one_unit(sd_bus *bus, const char *name, const char *good_states, bool quiet) {
1936         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1937         _cleanup_free_ char *n = NULL, *state = NULL;
1938         const char *path;
1939         int r;
1940
1941         assert(name);
1942
1943         n = unit_name_mangle(name, MANGLE_NOGLOB);
1944         if (!n)
1945                 return log_oom();
1946
1947         /* We don't use unit_dbus_path_from_name() directly since we
1948          * don't want to load the unit if it isn't loaded. */
1949
1950         r = sd_bus_call_method(
1951                         bus,
1952                         "org.freedesktop.systemd1",
1953                         "/org/freedesktop/systemd1",
1954                         "org.freedesktop.systemd1.Manager",
1955                         "GetUnit",
1956                         NULL,
1957                         &reply,
1958                         "s", n);
1959         if (r < 0) {
1960                 if (!quiet)
1961                         puts("unknown");
1962                 return 0;
1963         }
1964
1965         r = sd_bus_message_read(reply, "o", &path);
1966         if (r < 0)
1967                 return bus_log_parse_error(r);
1968
1969         r = sd_bus_get_property_string(
1970                         bus,
1971                         "org.freedesktop.systemd1",
1972                         path,
1973                         "org.freedesktop.systemd1.Unit",
1974                         "ActiveState",
1975                         NULL,
1976                         &state);
1977         if (r < 0) {
1978                 if (!quiet)
1979                         puts("unknown");
1980                 return 0;
1981         }
1982
1983         if (!quiet)
1984                 puts(state);
1985
1986         return nulstr_contains(good_states, state);
1987 }
1988
1989 static int check_triggering_units(
1990                 sd_bus *bus,
1991                 const char *name) {
1992
1993         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1994         _cleanup_free_ char *path = NULL, *n = NULL, *state = NULL;
1995         _cleanup_strv_free_ char **triggered_by = NULL;
1996         bool print_warning_label = true;
1997         char **i;
1998         int r;
1999
2000         n = unit_name_mangle(name, MANGLE_NOGLOB);
2001         if (!n)
2002                 return log_oom();
2003
2004         path = unit_dbus_path_from_name(n);
2005         if (!path)
2006                 return log_oom();
2007
2008         r = sd_bus_get_property_string(
2009                         bus,
2010                         "org.freedesktop.systemd1",
2011                         path,
2012                         "org.freedesktop.systemd1.Unit",
2013                         "LoadState",
2014                         &error,
2015                         &state);
2016         if (r < 0) {
2017                 log_error("Failed to get load state of %s: %s", n, bus_error_message(&error, r));
2018                 return r;
2019         }
2020
2021         if (streq(state, "masked"))
2022                 return 0;
2023
2024         r = sd_bus_get_property_strv(
2025                         bus,
2026                         "org.freedesktop.systemd1",
2027                         path,
2028                         "org.freedesktop.systemd1.Unit",
2029                         "TriggeredBy",
2030                         &error,
2031                         &triggered_by);
2032         if (r < 0) {
2033                 log_error("Failed to get triggered by array of %s: %s", n, bus_error_message(&error, r));
2034                 return r;
2035         }
2036
2037         STRV_FOREACH(i, triggered_by) {
2038                 r = check_one_unit(bus, *i, "active\0reloading\0", true);
2039                 if (r < 0) {
2040                         log_error("Failed to check unit: %s", strerror(-r));
2041                         return r;
2042                 }
2043
2044                 if (r == 0)
2045                         continue;
2046
2047                 if (print_warning_label) {
2048                         log_warning("Warning: Stopping %s, but it can still be activated by:", n);
2049                         print_warning_label = false;
2050                 }
2051
2052                 log_warning("  %s", *i);
2053         }
2054
2055         return 0;
2056 }
2057
2058 static const char *verb_to_method(const char *verb) {
2059        uint i;
2060
2061        for (i = 0; i < ELEMENTSOF(unit_actions); i++)
2062                 if (streq_ptr(unit_actions[i].verb, verb))
2063                         return unit_actions[i].method;
2064
2065        return "StartUnit";
2066 }
2067
2068 static const char *method_to_verb(const char *method) {
2069        uint i;
2070
2071        for (i = 0; i < ELEMENTSOF(unit_actions); i++)
2072                 if (streq_ptr(unit_actions[i].method, method))
2073                         return unit_actions[i].verb;
2074
2075        return "n/a";
2076 }
2077
2078 static int start_unit_one(
2079                 sd_bus *bus,
2080                 const char *method,
2081                 const char *name,
2082                 const char *mode,
2083                 sd_bus_error *error,
2084                 Set *s) {
2085
2086         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2087         const char *path;
2088         int r;
2089
2090         assert(method);
2091         assert(name);
2092         assert(mode);
2093         assert(error);
2094
2095         log_debug("Calling manager for %s on %s, %s", method, name, mode);
2096         r = sd_bus_call_method(
2097                         bus,
2098                         "org.freedesktop.systemd1",
2099                         "/org/freedesktop/systemd1",
2100                         "org.freedesktop.systemd1.Manager",
2101                         method,
2102                         error,
2103                         &reply,
2104                         "ss", name, mode);
2105         if (r < 0) {
2106                 const char *verb;
2107
2108                 if (r == -ENOENT && arg_action != ACTION_SYSTEMCTL)
2109                         /* There's always a fallback possible for
2110                          * legacy actions. */
2111                         return -EADDRNOTAVAIL;
2112
2113                 verb = method_to_verb(method);
2114
2115                 log_error("Failed to %s %s: %s", verb, name, bus_error_message(error, r));
2116                 return r;
2117         }
2118
2119         r = sd_bus_message_read(reply, "o", &path);
2120         if (r < 0)
2121                 return bus_log_parse_error(r);
2122
2123         if (need_daemon_reload(bus, name) > 0)
2124                 log_warning("Warning: Unit file of %s changed on disk, 'systemctl%s daemon-reload' recommended.",
2125                             name, arg_scope == UNIT_FILE_SYSTEM ? "" : " --user");
2126
2127         if (s) {
2128                 char *p;
2129
2130                 p = strdup(path);
2131                 if (!p)
2132                         return log_oom();
2133
2134                 log_debug("Adding %s to the set", p);
2135                 r = set_consume(s, p);
2136                 if (r < 0)
2137                         return log_oom();
2138         }
2139
2140         return 0;
2141 }
2142
2143 static int expand_names(sd_bus *bus, char **names, const char* suffix, char ***ret) {
2144
2145         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2146         _cleanup_strv_free_ char **mangled = NULL, **globs = NULL;
2147         char **name;
2148         int r = 0, i;
2149
2150         STRV_FOREACH(name, names) {
2151                 char *t;
2152
2153                 if (suffix)
2154                         t = unit_name_mangle_with_suffix(*name, MANGLE_GLOB, suffix);
2155                 else
2156                         t = unit_name_mangle(*name, MANGLE_GLOB);
2157                 if (!t)
2158                         return log_oom();
2159
2160                 if (string_is_glob(t))
2161                         r = strv_push(&globs, t);
2162                 else
2163                         r = strv_push(&mangled, t);
2164                 if (r < 0) {
2165                         free(t);
2166                         return log_oom();
2167                 }
2168         }
2169
2170         /* Query the manager only if any of the names are a glob, since
2171          * this is fairly expensive */
2172         if (!strv_isempty(globs)) {
2173                 _cleanup_free_ UnitInfo *unit_infos = NULL;
2174
2175                 r = get_unit_list(bus, &reply, &unit_infos, globs);
2176                 if (r < 0)
2177                         return r;
2178
2179                 for (i = 0; i < r; i++)
2180                         if (strv_extend(&mangled, unit_infos[i].id) < 0)
2181                                 return log_oom();
2182         }
2183
2184         *ret = mangled;
2185         mangled = NULL; /* do not free */
2186         return 0;
2187 }
2188
2189 static const struct {
2190         const char *target;
2191         const char *verb;
2192         const char *mode;
2193 } action_table[_ACTION_MAX] = {
2194         [ACTION_HALT]         = { SPECIAL_HALT_TARGET,         "halt",         "replace-irreversibly" },
2195         [ACTION_POWEROFF]     = { SPECIAL_POWEROFF_TARGET,     "poweroff",     "replace-irreversibly" },
2196         [ACTION_REBOOT]       = { SPECIAL_REBOOT_TARGET,       "reboot",       "replace-irreversibly" },
2197         [ACTION_KEXEC]        = { SPECIAL_KEXEC_TARGET,        "kexec",        "replace-irreversibly" },
2198         [ACTION_RUNLEVEL2]    = { SPECIAL_RUNLEVEL2_TARGET,    NULL,           "isolate" },
2199         [ACTION_RUNLEVEL3]    = { SPECIAL_RUNLEVEL3_TARGET,    NULL,           "isolate" },
2200         [ACTION_RUNLEVEL4]    = { SPECIAL_RUNLEVEL4_TARGET,    NULL,           "isolate" },
2201         [ACTION_RUNLEVEL5]    = { SPECIAL_RUNLEVEL5_TARGET,    NULL,           "isolate" },
2202         [ACTION_RESCUE]       = { SPECIAL_RESCUE_TARGET,       "rescue",       "isolate" },
2203         [ACTION_EMERGENCY]    = { SPECIAL_EMERGENCY_TARGET,    "emergency",    "isolate" },
2204         [ACTION_DEFAULT]      = { SPECIAL_DEFAULT_TARGET,      "default",      "isolate" },
2205         [ACTION_EXIT]         = { SPECIAL_EXIT_TARGET,         "exit",         "replace-irreversibly" },
2206         [ACTION_SUSPEND]      = { SPECIAL_SUSPEND_TARGET,      "suspend",      "replace-irreversibly" },
2207         [ACTION_HIBERNATE]    = { SPECIAL_HIBERNATE_TARGET,    "hibernate",    "replace-irreversibly" },
2208         [ACTION_HYBRID_SLEEP] = { SPECIAL_HYBRID_SLEEP_TARGET, "hybrid-sleep", "replace-irreversibly" },
2209 };
2210
2211 static enum action verb_to_action(const char *verb) {
2212         enum action i;
2213
2214         for (i = _ACTION_INVALID; i < _ACTION_MAX; i++)
2215                 if (streq_ptr(action_table[i].verb, verb))
2216                         return i;
2217
2218         return _ACTION_INVALID;
2219 }
2220
2221 static int start_unit(sd_bus *bus, char **args) {
2222         _cleanup_set_free_free_ Set *s = NULL;
2223         _cleanup_strv_free_ char **names = NULL;
2224         const char *method, *mode, *one_name;
2225         char **name;
2226         int r = 0;
2227
2228         assert(bus);
2229
2230         ask_password_agent_open_if_enabled();
2231
2232         if (arg_action == ACTION_SYSTEMCTL) {
2233                 enum action action;
2234                 method = verb_to_method(args[0]);
2235                 action = verb_to_action(args[0]);
2236
2237                 mode = streq(args[0], "isolate") ? "isolate" :
2238                        action_table[action].mode ?: arg_job_mode;
2239
2240                 one_name = action_table[action].target;
2241         } else {
2242                 assert(arg_action < ELEMENTSOF(action_table));
2243                 assert(action_table[arg_action].target);
2244
2245                 method = "StartUnit";
2246
2247                 mode = action_table[arg_action].mode;
2248                 one_name = action_table[arg_action].target;
2249         }
2250
2251         if (one_name)
2252                 names = strv_new(one_name, NULL);
2253         else {
2254                 r = expand_names(bus, args + 1, NULL, &names);
2255                 if (r < 0)
2256                         log_error("Failed to expand names: %s", strerror(-r));
2257         }
2258
2259         if (!arg_no_block) {
2260                 r = enable_wait_for_jobs(bus);
2261                 if (r < 0) {
2262                         log_error("Could not watch jobs: %s", strerror(-r));
2263                         return r;
2264                 }
2265
2266                 s = set_new(string_hash_func, string_compare_func);
2267                 if (!s)
2268                         return log_oom();
2269         }
2270
2271         STRV_FOREACH(name, names) {
2272                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2273                 int q;
2274
2275                 q = start_unit_one(bus, method, *name, mode, &error, s);
2276                 if (r >= 0 && q < 0)
2277                         r = translate_bus_error_to_exit_status(q, &error);
2278         }
2279
2280         if (!arg_no_block) {
2281                 int q;
2282
2283                 q = wait_for_jobs(bus, s);
2284                 if (q < 0)
2285                         return q;
2286
2287                 /* When stopping units, warn if they can still be triggered by
2288                  * another active unit (socket, path, timer) */
2289                 if (!arg_quiet && streq(method, "StopUnit"))
2290                         STRV_FOREACH(name, names)
2291                                 check_triggering_units(bus, *name);
2292         }
2293
2294         return r;
2295 }
2296
2297 /* Ask systemd-logind, which might grant access to unprivileged users
2298  * through PolicyKit */
2299 static int reboot_with_logind(sd_bus *bus, enum action a) {
2300 #ifdef HAVE_LOGIND
2301         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2302         const char *method;
2303         int r;
2304
2305         if (!bus)
2306                 return -EIO;
2307
2308         polkit_agent_open_if_enabled();
2309
2310         switch (a) {
2311
2312         case ACTION_REBOOT:
2313                 method = "Reboot";
2314                 break;
2315
2316         case ACTION_POWEROFF:
2317                 method = "PowerOff";
2318                 break;
2319
2320         case ACTION_SUSPEND:
2321                 method = "Suspend";
2322                 break;
2323
2324         case ACTION_HIBERNATE:
2325                 method = "Hibernate";
2326                 break;
2327
2328         case ACTION_HYBRID_SLEEP:
2329                 method = "HybridSleep";
2330                 break;
2331
2332         default:
2333                 return -EINVAL;
2334         }
2335
2336         r = sd_bus_call_method(
2337                         bus,
2338                         "org.freedesktop.login1",
2339                         "/org/freedesktop/login1",
2340                         "org.freedesktop.login1.Manager",
2341                         method,
2342                         &error,
2343                         NULL,
2344                         "b", true);
2345         if (r < 0)
2346                 log_error("Failed to execute operation: %s", bus_error_message(&error, r));
2347
2348         return r;
2349 #else
2350         return -ENOSYS;
2351 #endif
2352 }
2353
2354 static int check_inhibitors(sd_bus *bus, enum action a) {
2355 #ifdef HAVE_LOGIND
2356         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2357         _cleanup_strv_free_ char **sessions = NULL;
2358         const char *what, *who, *why, *mode;
2359         uint32_t uid, pid;
2360         unsigned c = 0;
2361         char **s;
2362         int r;
2363
2364         if (!bus)
2365                 return 0;
2366
2367         if (arg_ignore_inhibitors || arg_force > 0)
2368                 return 0;
2369
2370         if (arg_when > 0)
2371                 return 0;
2372
2373         if (geteuid() == 0)
2374                 return 0;
2375
2376         if (!on_tty())
2377                 return 0;
2378
2379         r = sd_bus_call_method(
2380                         bus,
2381                         "org.freedesktop.login1",
2382                         "/org/freedesktop/login1",
2383                         "org.freedesktop.login1.Manager",
2384                         "ListInhibitors",
2385                         NULL,
2386                         &reply,
2387                         NULL);
2388         if (r < 0)
2389                 /* If logind is not around, then there are no inhibitors... */
2390                 return 0;
2391
2392         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssuu)");
2393         if (r < 0)
2394                 return bus_log_parse_error(r);
2395
2396         while ((r = sd_bus_message_read(reply, "(ssssuu)", &what, &who, &why, &mode, &uid, &pid)) > 0) {
2397                 _cleanup_free_ char *comm = NULL, *user = NULL;
2398                 _cleanup_strv_free_ char **sv = NULL;
2399
2400                 if (!streq(mode, "block"))
2401                         continue;
2402
2403                 sv = strv_split(what, ":");
2404                 if (!sv)
2405                         return log_oom();
2406
2407                 if (!strv_contains(sv,
2408                                   a == ACTION_HALT ||
2409                                   a == ACTION_POWEROFF ||
2410                                   a == ACTION_REBOOT ||
2411                                   a == ACTION_KEXEC ? "shutdown" : "sleep"))
2412                         continue;
2413
2414                 get_process_comm(pid, &comm);
2415                 user = uid_to_name(uid);
2416
2417                 log_warning("Operation inhibited by \"%s\" (PID %lu \"%s\", user %s), reason is \"%s\".",
2418                             who, (unsigned long) pid, strna(comm), strna(user), why);
2419
2420                 c++;
2421         }
2422         if (r < 0)
2423                 return bus_log_parse_error(r);
2424
2425         r = sd_bus_message_exit_container(reply);
2426         if (r < 0)
2427                 return bus_log_parse_error(r);
2428
2429         /* Check for current sessions */
2430         sd_get_sessions(&sessions);
2431         STRV_FOREACH(s, sessions) {
2432                 _cleanup_free_ char *type = NULL, *tty = NULL, *seat = NULL, *user = NULL, *service = NULL, *class = NULL;
2433
2434                 if (sd_session_get_uid(*s, &uid) < 0 || uid == getuid())
2435                         continue;
2436
2437                 if (sd_session_get_class(*s, &class) < 0 || !streq(class, "user"))
2438                         continue;
2439
2440                 if (sd_session_get_type(*s, &type) < 0 || (!streq(type, "x11") && !streq(type, "tty")))
2441                         continue;
2442
2443                 sd_session_get_tty(*s, &tty);
2444                 sd_session_get_seat(*s, &seat);
2445                 sd_session_get_service(*s, &service);
2446                 user = uid_to_name(uid);
2447
2448                 log_warning("User %s is logged in on %s.", strna(user), isempty(tty) ? (isempty(seat) ? strna(service) : seat) : tty);
2449                 c++;
2450         }
2451
2452         if (c <= 0)
2453                 return 0;
2454
2455         log_error("Please retry operation after closing inhibitors and logging out other users.\nAlternatively, ignore inhibitors and users with 'systemctl %s -i'.",
2456                   action_table[a].verb);
2457
2458         return -EPERM;
2459 #else
2460         return 0;
2461 #endif
2462 }
2463
2464 static int start_special(sd_bus *bus, char **args) {
2465         enum action a;
2466         int r;
2467
2468         assert(args);
2469
2470         a = verb_to_action(args[0]);
2471
2472         r = check_inhibitors(bus, a);
2473         if (r < 0)
2474                 return r;
2475
2476         if (arg_force >= 2 && geteuid() != 0) {
2477                 log_error("Must be root.");
2478                 return -EPERM;
2479         }
2480
2481         if (arg_force >= 2 &&
2482             (a == ACTION_HALT ||
2483              a == ACTION_POWEROFF ||
2484              a == ACTION_REBOOT))
2485                 return halt_now(a);
2486
2487         if (arg_force >= 1 &&
2488             (a == ACTION_HALT ||
2489              a == ACTION_POWEROFF ||
2490              a == ACTION_REBOOT ||
2491              a == ACTION_KEXEC ||
2492              a == ACTION_EXIT))
2493                 return daemon_reload(bus, args);
2494
2495         /* first try logind, to allow authentication with polkit */
2496         if (geteuid() != 0 &&
2497             (a == ACTION_POWEROFF ||
2498              a == ACTION_REBOOT ||
2499              a == ACTION_SUSPEND ||
2500              a == ACTION_HIBERNATE ||
2501              a == ACTION_HYBRID_SLEEP)) {
2502                 r = reboot_with_logind(bus, a);
2503                 if (r >= 0)
2504                         return r;
2505         }
2506
2507         r = start_unit(bus, args);
2508         if (r == EXIT_SUCCESS)
2509                 warn_wall(a);
2510
2511         return r;
2512 }
2513
2514 static int check_unit_generic(sd_bus *bus, int code, const char *good_states, char **args) {
2515         _cleanup_strv_free_ char **names = NULL;
2516         char **name;
2517         int r = code;
2518
2519         assert(bus);
2520         assert(args);
2521
2522         r = expand_names(bus, args, NULL, &names);
2523         if (r < 0)
2524                 log_error("Failed to expand names: %s", strerror(-r));
2525
2526         STRV_FOREACH(name, names) {
2527                 int state;
2528
2529                 state = check_one_unit(bus, *name, good_states, arg_quiet);
2530                 if (state < 0)
2531                         return state;
2532                 if (state > 0)
2533                         r = 0;
2534         }
2535
2536         return r;
2537 }
2538
2539 static int check_unit_active(sd_bus *bus, char **args) {
2540         /* According to LSB: 3, "program is not running" */
2541         return check_unit_generic(bus, 3, "active\0reloading\0", args + 1);
2542 }
2543
2544 static int check_unit_failed(sd_bus *bus, char **args) {
2545         return check_unit_generic(bus, 1, "failed\0", args + 1);
2546 }
2547
2548 static int kill_unit(sd_bus *bus, char **args) {
2549         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2550         _cleanup_strv_free_ char **names = NULL;
2551         char **name;
2552         int r, q;
2553
2554         assert(bus);
2555         assert(args);
2556
2557         if (!arg_kill_who)
2558                 arg_kill_who = "all";
2559
2560         r = expand_names(bus, args + 1, NULL, &names);
2561         if (r < 0)
2562                 log_error("Failed to expand names: %s", strerror(-r));
2563
2564         STRV_FOREACH(name, names) {
2565                 q = sd_bus_call_method(
2566                                 bus,
2567                                 "org.freedesktop.systemd1",
2568                                 "/org/freedesktop/systemd1",
2569                                 "org.freedesktop.systemd1.Manager",
2570                                 "KillUnit",
2571                                 &error,
2572                                 NULL,
2573                                 "ssi", *names, arg_kill_who, arg_signal);
2574                 if (q < 0) {
2575                         log_error("Failed to kill unit %s: %s",
2576                                   *names, bus_error_message(&error, r));
2577                         if (r == 0)
2578                                 r = q;
2579                 }
2580         }
2581
2582         return r;
2583 }
2584
2585 typedef struct ExecStatusInfo {
2586         char *name;
2587
2588         char *path;
2589         char **argv;
2590
2591         bool ignore;
2592
2593         usec_t start_timestamp;
2594         usec_t exit_timestamp;
2595         pid_t pid;
2596         int code;
2597         int status;
2598
2599         LIST_FIELDS(struct ExecStatusInfo, exec);
2600 } ExecStatusInfo;
2601
2602 static void exec_status_info_free(ExecStatusInfo *i) {
2603         assert(i);
2604
2605         free(i->name);
2606         free(i->path);
2607         strv_free(i->argv);
2608         free(i);
2609 }
2610
2611 static int exec_status_info_deserialize(sd_bus_message *m, ExecStatusInfo *i) {
2612         uint64_t start_timestamp, exit_timestamp, start_timestamp_monotonic, exit_timestamp_monotonic;
2613         const char *path;
2614         uint32_t pid;
2615         int32_t code, status;
2616         int ignore, r;
2617
2618         assert(m);
2619         assert(i);
2620
2621         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_STRUCT, "sasbttttuii");
2622         if (r < 0)
2623                 return bus_log_parse_error(r);
2624         else if (r == 0)
2625                 return 0;
2626
2627         r = sd_bus_message_read(m, "s", &path);
2628         if (r < 0)
2629                 return bus_log_parse_error(r);
2630
2631         i->path = strdup(path);
2632         if (!i->path)
2633                 return log_oom();
2634
2635         r = sd_bus_message_read_strv(m, &i->argv);
2636         if (r < 0)
2637                 return bus_log_parse_error(r);
2638
2639         r = sd_bus_message_read(m,
2640                                 "bttttuii",
2641                                 &ignore,
2642                                 &start_timestamp, &start_timestamp_monotonic,
2643                                 &exit_timestamp, &exit_timestamp_monotonic,
2644                                 &pid,
2645                                 &code, &status);
2646         if (r < 0)
2647                 return bus_log_parse_error(r);
2648
2649         i->ignore = ignore;
2650         i->start_timestamp = (usec_t) start_timestamp;
2651         i->exit_timestamp = (usec_t) exit_timestamp;
2652         i->pid = (pid_t) pid;
2653         i->code = code;
2654         i->status = status;
2655
2656         r = sd_bus_message_exit_container(m);
2657         if (r < 0)
2658                 return bus_log_parse_error(r);
2659
2660         return 1;
2661 }
2662
2663 typedef struct UnitStatusInfo {
2664         const char *id;
2665         const char *load_state;
2666         const char *active_state;
2667         const char *sub_state;
2668         const char *unit_file_state;
2669
2670         const char *description;
2671         const char *following;
2672
2673         char **documentation;
2674
2675         const char *fragment_path;
2676         const char *source_path;
2677         const char *control_group;
2678
2679         char **dropin_paths;
2680
2681         const char *load_error;
2682         const char *result;
2683
2684         usec_t inactive_exit_timestamp;
2685         usec_t inactive_exit_timestamp_monotonic;
2686         usec_t active_enter_timestamp;
2687         usec_t active_exit_timestamp;
2688         usec_t inactive_enter_timestamp;
2689
2690         bool need_daemon_reload;
2691
2692         /* Service */
2693         pid_t main_pid;
2694         pid_t control_pid;
2695         const char *status_text;
2696         const char *pid_file;
2697         bool running:1;
2698
2699         usec_t start_timestamp;
2700         usec_t exit_timestamp;
2701
2702         int exit_code, exit_status;
2703
2704         usec_t condition_timestamp;
2705         bool condition_result;
2706         bool failed_condition_trigger;
2707         bool failed_condition_negate;
2708         const char *failed_condition;
2709         const char *failed_condition_param;
2710
2711         /* Socket */
2712         unsigned n_accepted;
2713         unsigned n_connections;
2714         bool accept;
2715
2716         /* Pairs of type, path */
2717         char **listen;
2718
2719         /* Device */
2720         const char *sysfs_path;
2721
2722         /* Mount, Automount */
2723         const char *where;
2724
2725         /* Swap */
2726         const char *what;
2727
2728         LIST_HEAD(ExecStatusInfo, exec);
2729 } UnitStatusInfo;
2730
2731 static void print_status_info(
2732                 UnitStatusInfo *i,
2733                 bool *ellipsized) {
2734
2735         ExecStatusInfo *p;
2736         const char *on, *off, *ss;
2737         usec_t timestamp;
2738         char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], *s1;
2739         char since2[FORMAT_TIMESTAMP_MAX], *s2;
2740         const char *path;
2741         int flags =
2742                 arg_all * OUTPUT_SHOW_ALL |
2743                 (!on_tty() || pager_have()) * OUTPUT_FULL_WIDTH |
2744                 on_tty() * OUTPUT_COLOR |
2745                 !arg_quiet * OUTPUT_WARN_CUTOFF |
2746                 arg_full * OUTPUT_FULL_WIDTH;
2747         char **t, **t2;
2748
2749         assert(i);
2750
2751         /* This shows pretty information about a unit. See
2752          * print_property() for a low-level property printer */
2753
2754         printf("%s", strna(i->id));
2755
2756         if (i->description && !streq_ptr(i->id, i->description))
2757                 printf(" - %s", i->description);
2758
2759         printf("\n");
2760
2761         if (i->following)
2762                 printf("   Follow: unit currently follows state of %s\n", i->following);
2763
2764         if (streq_ptr(i->load_state, "error")) {
2765                 on = ansi_highlight_red();
2766                 off = ansi_highlight_off();
2767         } else
2768                 on = off = "";
2769
2770         path = i->source_path ? i->source_path : i->fragment_path;
2771
2772         if (i->load_error)
2773                 printf("   Loaded: %s%s%s (Reason: %s)\n",
2774                        on, strna(i->load_state), off, i->load_error);
2775         else if (path && i->unit_file_state)
2776                 printf("   Loaded: %s%s%s (%s; %s)\n",
2777                        on, strna(i->load_state), off, path, i->unit_file_state);
2778         else if (path)
2779                 printf("   Loaded: %s%s%s (%s)\n",
2780                        on, strna(i->load_state), off, path);
2781         else
2782                 printf("   Loaded: %s%s%s\n",
2783                        on, strna(i->load_state), off);
2784
2785         if (!strv_isempty(i->dropin_paths)) {
2786                 _cleanup_free_ char *dir = NULL;
2787                 bool last = false;
2788                 char ** dropin;
2789
2790                 STRV_FOREACH(dropin, i->dropin_paths) {
2791                         if (! dir || last) {
2792                                 printf(dir ? "        " : "  Drop-In: ");
2793
2794                                 free(dir);
2795                                 dir = NULL;
2796
2797                                 if (path_get_parent(*dropin, &dir) < 0) {
2798                                         log_oom();
2799                                         return;
2800                                 }
2801
2802                                 printf("%s\n           %s", dir,
2803                                        draw_special_char(DRAW_TREE_RIGHT));
2804                         }
2805
2806                         last = ! (*(dropin + 1) && startswith(*(dropin + 1), dir));
2807
2808                         printf("%s%s", basename(*dropin), last ? "\n" : ", ");
2809                 }
2810         }
2811
2812         ss = streq_ptr(i->active_state, i->sub_state) ? NULL : i->sub_state;
2813
2814         if (streq_ptr(i->active_state, "failed")) {
2815                 on = ansi_highlight_red();
2816                 off = ansi_highlight_off();
2817         } else if (streq_ptr(i->active_state, "active") || streq_ptr(i->active_state, "reloading")) {
2818                 on = ansi_highlight_green();
2819                 off = ansi_highlight_off();
2820         } else
2821                 on = off = "";
2822
2823         if (ss)
2824                 printf("   Active: %s%s (%s)%s",
2825                        on, strna(i->active_state), ss, off);
2826         else
2827                 printf("   Active: %s%s%s",
2828                        on, strna(i->active_state), off);
2829
2830         if (!isempty(i->result) && !streq(i->result, "success"))
2831                 printf(" (Result: %s)", i->result);
2832
2833         timestamp = (streq_ptr(i->active_state, "active")      ||
2834                      streq_ptr(i->active_state, "reloading"))   ? i->active_enter_timestamp :
2835                     (streq_ptr(i->active_state, "inactive")    ||
2836                      streq_ptr(i->active_state, "failed"))      ? i->inactive_enter_timestamp :
2837                     streq_ptr(i->active_state, "activating")    ? i->inactive_exit_timestamp :
2838                                                                   i->active_exit_timestamp;
2839
2840         s1 = format_timestamp_relative(since1, sizeof(since1), timestamp);
2841         s2 = format_timestamp(since2, sizeof(since2), timestamp);
2842
2843         if (s1)
2844                 printf(" since %s; %s\n", s2, s1);
2845         else if (s2)
2846                 printf(" since %s\n", s2);
2847         else
2848                 printf("\n");
2849
2850         if (!i->condition_result && i->condition_timestamp > 0) {
2851                 s1 = format_timestamp_relative(since1, sizeof(since1), i->condition_timestamp);
2852                 s2 = format_timestamp(since2, sizeof(since2), i->condition_timestamp);
2853
2854                 printf("           start condition failed at %s%s%s\n",
2855                        s2, s1 ? "; " : "", s1 ? s1 : "");
2856                 if (i->failed_condition_trigger)
2857                         printf("           none of the trigger conditions were met\n");
2858                 else if (i->failed_condition)
2859                         printf("           %s=%s%s was not met\n",
2860                                i->failed_condition,
2861                                i->failed_condition_negate ? "!" : "",
2862                                i->failed_condition_param);
2863         }
2864
2865         if (i->sysfs_path)
2866                 printf("   Device: %s\n", i->sysfs_path);
2867         if (i->where)
2868                 printf("    Where: %s\n", i->where);
2869         if (i->what)
2870                 printf("     What: %s\n", i->what);
2871
2872         STRV_FOREACH(t, i->documentation)
2873                 printf(" %*s %s\n", 9, t == i->documentation ? "Docs:" : "", *t);
2874
2875         STRV_FOREACH_PAIR(t, t2, i->listen)
2876                 printf(" %*s %s (%s)\n", 9, t == i->listen ? "Listen:" : "", *t2, *t);
2877
2878         if (i->accept)
2879                 printf(" Accepted: %u; Connected: %u\n", i->n_accepted, i->n_connections);
2880
2881         LIST_FOREACH(exec, p, i->exec) {
2882                 _cleanup_free_ char *argv = NULL;
2883                 bool good;
2884
2885                 /* Only show exited processes here */
2886                 if (p->code == 0)
2887                         continue;
2888
2889                 argv = strv_join(p->argv, " ");
2890                 printf("  Process: %u %s=%s ", p->pid, p->name, strna(argv));
2891
2892                 good = is_clean_exit_lsb(p->code, p->status, NULL);
2893                 if (!good) {
2894                         on = ansi_highlight_red();
2895                         off = ansi_highlight_off();
2896                 } else
2897                         on = off = "";
2898
2899                 printf("%s(code=%s, ", on, sigchld_code_to_string(p->code));
2900
2901                 if (p->code == CLD_EXITED) {
2902                         const char *c;
2903
2904                         printf("status=%i", p->status);
2905
2906                         c = exit_status_to_string(p->status, EXIT_STATUS_SYSTEMD);
2907                         if (c)
2908                                 printf("/%s", c);
2909
2910                 } else
2911                         printf("signal=%s", signal_to_string(p->status));
2912
2913                 printf(")%s\n", off);
2914
2915                 if (i->main_pid == p->pid &&
2916                     i->start_timestamp == p->start_timestamp &&
2917                     i->exit_timestamp == p->start_timestamp)
2918                         /* Let's not show this twice */
2919                         i->main_pid = 0;
2920
2921                 if (p->pid == i->control_pid)
2922                         i->control_pid = 0;
2923         }
2924
2925         if (i->main_pid > 0 || i->control_pid > 0) {
2926                 if (i->main_pid > 0) {
2927                         printf(" Main PID: %u", (unsigned) i->main_pid);
2928
2929                         if (i->running) {
2930                                 _cleanup_free_ char *comm = NULL;
2931                                 get_process_comm(i->main_pid, &comm);
2932                                 if (comm)
2933                                         printf(" (%s)", comm);
2934                         } else if (i->exit_code > 0) {
2935                                 printf(" (code=%s, ", sigchld_code_to_string(i->exit_code));
2936
2937                                 if (i->exit_code == CLD_EXITED) {
2938                                         const char *c;
2939
2940                                         printf("status=%i", i->exit_status);
2941
2942                                         c = exit_status_to_string(i->exit_status, EXIT_STATUS_SYSTEMD);
2943                                         if (c)
2944                                                 printf("/%s", c);
2945
2946                                 } else
2947                                         printf("signal=%s", signal_to_string(i->exit_status));
2948                                 printf(")");
2949                         }
2950
2951                         if (i->control_pid > 0)
2952                                 printf(";");
2953                 }
2954
2955                 if (i->control_pid > 0) {
2956                         _cleanup_free_ char *c = NULL;
2957
2958                         printf(" %8s: %u", i->main_pid ? "" : " Control", (unsigned) i->control_pid);
2959
2960                         get_process_comm(i->control_pid, &c);
2961                         if (c)
2962                                 printf(" (%s)", c);
2963                 }
2964
2965                 printf("\n");
2966         }
2967
2968         if (i->status_text)
2969                 printf("   Status: \"%s\"\n", i->status_text);
2970
2971         if (i->control_group &&
2972             (i->main_pid > 0 || i->control_pid > 0 || cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, i->control_group, false) == 0)) {
2973                 unsigned c;
2974
2975                 printf("   CGroup: %s\n", i->control_group);
2976
2977                 if (arg_transport == BUS_TRANSPORT_LOCAL || arg_transport == BUS_TRANSPORT_CONTAINER) {
2978                         unsigned k = 0;
2979                         pid_t extra[2];
2980                         char prefix[] = "           ";
2981
2982                         c = columns();
2983                         if (c > sizeof(prefix) - 1)
2984                                 c -= sizeof(prefix) - 1;
2985                         else
2986                                 c = 0;
2987
2988                         if (i->main_pid > 0)
2989                                 extra[k++] = i->main_pid;
2990
2991                         if (i->control_pid > 0)
2992                                 extra[k++] = i->control_pid;
2993
2994                         show_cgroup_and_extra(SYSTEMD_CGROUP_CONTROLLER, i->control_group, prefix,
2995                                                       c, false, extra, k, flags);
2996                 }
2997         }
2998
2999         if (i->id && arg_transport == BUS_TRANSPORT_LOCAL) {
3000                 printf("\n");
3001                 show_journal_by_unit(stdout,
3002                                      i->id,
3003                                      arg_output,
3004                                      0,
3005                                      i->inactive_exit_timestamp_monotonic,
3006                                      arg_lines,
3007                                      getuid(),
3008                                      flags,
3009                                      arg_scope == UNIT_FILE_SYSTEM,
3010                                      ellipsized);
3011         }
3012
3013         if (i->need_daemon_reload)
3014                 printf("\n%sWarning:%s Unit file changed on disk, 'systemctl %sdaemon-reload' recommended.\n",
3015                        ansi_highlight_red(),
3016                        ansi_highlight_off(),
3017                        arg_scope == UNIT_FILE_SYSTEM ? "" : "--user ");
3018 }
3019
3020 static void show_unit_help(UnitStatusInfo *i) {
3021         char **p;
3022
3023         assert(i);
3024
3025         if (!i->documentation) {
3026                 log_info("Documentation for %s not known.", i->id);
3027                 return;
3028         }
3029
3030         STRV_FOREACH(p, i->documentation) {
3031
3032                 if (startswith(*p, "man:")) {
3033                         const char *args[4] = { "man", NULL, NULL, NULL };
3034                         _cleanup_free_ char *page = NULL, *section = NULL;
3035                         char *e = NULL;
3036                         pid_t pid;
3037                         size_t k;
3038
3039                         k = strlen(*p);
3040
3041                         if ((*p)[k-1] == ')')
3042                                 e = strrchr(*p, '(');
3043
3044                         if (e) {
3045                                 page = strndup((*p) + 4, e - *p - 4);
3046                                 section = strndup(e + 1, *p + k - e - 2);
3047                                 if (!page || !section) {
3048                                         log_oom();
3049                                         return;
3050                                 }
3051
3052                                 args[1] = section;
3053                                 args[2] = page;
3054                         } else
3055                                 args[1] = *p + 4;
3056
3057                         pid = fork();
3058                         if (pid < 0) {
3059                                 log_error("Failed to fork: %m");
3060                                 continue;
3061                         }
3062
3063                         if (pid == 0) {
3064                                 /* Child */
3065                                 execvp(args[0], (char**) args);
3066                                 log_error("Failed to execute man: %m");
3067                                 _exit(EXIT_FAILURE);
3068                         }
3069
3070                         wait_for_terminate(pid, NULL);
3071                 } else
3072                         log_info("Can't show: %s", *p);
3073         }
3074 }
3075
3076 static int status_property(const char *name, sd_bus_message *m, UnitStatusInfo *i, const char *contents) {
3077         int r;
3078
3079         assert(name);
3080         assert(m);
3081         assert(i);
3082
3083         switch (contents[0]) {
3084
3085         case SD_BUS_TYPE_STRING: {
3086                 const char *s;
3087
3088                 r = sd_bus_message_read(m, "s", &s);
3089                 if (r < 0)
3090                         return bus_log_parse_error(r);
3091
3092                 if (!isempty(s)) {
3093                         if (streq(name, "Id"))
3094                                 i->id = s;
3095                         else if (streq(name, "LoadState"))
3096                                 i->load_state = s;
3097                         else if (streq(name, "ActiveState"))
3098                                 i->active_state = s;
3099                         else if (streq(name, "SubState"))
3100                                 i->sub_state = s;
3101                         else if (streq(name, "Description"))
3102                                 i->description = s;
3103                         else if (streq(name, "FragmentPath"))
3104                                 i->fragment_path = s;
3105                         else if (streq(name, "SourcePath"))
3106                                 i->source_path = s;
3107 #ifndef NOLEGACY
3108                         else if (streq(name, "DefaultControlGroup")) {
3109                                 const char *e;
3110                                 e = startswith(s, SYSTEMD_CGROUP_CONTROLLER ":");
3111                                 if (e)
3112                                         i->control_group = e;
3113                         }
3114 #endif
3115                         else if (streq(name, "ControlGroup"))
3116                                 i->control_group = s;
3117                         else if (streq(name, "StatusText"))
3118                                 i->status_text = s;
3119                         else if (streq(name, "PIDFile"))
3120                                 i->pid_file = s;
3121                         else if (streq(name, "SysFSPath"))
3122                                 i->sysfs_path = s;
3123                         else if (streq(name, "Where"))
3124                                 i->where = s;
3125                         else if (streq(name, "What"))
3126                                 i->what = s;
3127                         else if (streq(name, "Following"))
3128                                 i->following = s;
3129                         else if (streq(name, "UnitFileState"))
3130                                 i->unit_file_state = s;
3131                         else if (streq(name, "Result"))