chiark / gitweb /
systemctl: process only signals for jobs we really wait for
[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
8   systemd is free software; you can redistribute it and/or modify it
9   under the terms of the GNU Lesser General Public License as published by
10   the Free Software Foundation; either version 2.1 of the License, or
11   (at your option) any later version.
12
13   systemd is distributed in the hope that it will be useful, but
14   WITHOUT ANY WARRANTY; without even the implied warranty of
15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16   Lesser General Public License for more details.
17
18   You should have received a copy of the GNU Lesser General Public License
19   along with systemd; If not, see <http://www.gnu.org/licenses/>.
20 ***/
21
22 #include <sys/reboot.h>
23 #include <stdio.h>
24 #include <getopt.h>
25 #include <locale.h>
26 #include <stdbool.h>
27 #include <string.h>
28 #include <errno.h>
29 #include <sys/ioctl.h>
30 #include <termios.h>
31 #include <unistd.h>
32 #include <fcntl.h>
33 #include <sys/socket.h>
34 #include <sys/stat.h>
35 #include <stddef.h>
36 #include <sys/prctl.h>
37 #include <dbus/dbus.h>
38
39 #include <systemd/sd-daemon.h>
40 #include <systemd/sd-shutdown.h>
41 #include <systemd/sd-login.h>
42
43 #include "log.h"
44 #include "util.h"
45 #include "macro.h"
46 #include "set.h"
47 #include "utmp-wtmp.h"
48 #include "special.h"
49 #include "initreq.h"
50 #include "path-util.h"
51 #include "strv.h"
52 #include "dbus-common.h"
53 #include "cgroup-show.h"
54 #include "cgroup-util.h"
55 #include "list.h"
56 #include "path-lookup.h"
57 #include "conf-parser.h"
58 #include "exit-status.h"
59 #include "bus-errors.h"
60 #include "build.h"
61 #include "unit-name.h"
62 #include "pager.h"
63 #include "spawn-ask-password-agent.h"
64 #include "spawn-polkit-agent.h"
65 #include "install.h"
66 #include "logs-show.h"
67 #include "path-util.h"
68 #include "socket-util.h"
69 #include "fileio.h"
70
71 static char **arg_types = NULL;
72 static char **arg_states = NULL;
73 static char **arg_properties = NULL;
74 static bool arg_all = false;
75 static enum dependency {
76         DEPENDENCY_FORWARD,
77         DEPENDENCY_REVERSE,
78         DEPENDENCY_AFTER,
79         DEPENDENCY_BEFORE,
80 } arg_dependency = DEPENDENCY_FORWARD;
81 static const char *arg_job_mode = "replace";
82 static UnitFileScope arg_scope = UNIT_FILE_SYSTEM;
83 static bool arg_no_block = false;
84 static bool arg_no_legend = false;
85 static bool arg_no_pager = false;
86 static bool arg_no_wtmp = false;
87 static bool arg_no_wall = false;
88 static bool arg_no_reload = false;
89 static bool arg_show_types = false;
90 static bool arg_ignore_inhibitors = false;
91 static bool arg_dry = false;
92 static bool arg_quiet = false;
93 static bool arg_full = false;
94 static int arg_force = 0;
95 static bool arg_ask_password = true;
96 static bool arg_runtime = false;
97 static char **arg_wall = NULL;
98 static const char *arg_kill_who = NULL;
99 static int arg_signal = SIGTERM;
100 static const char *arg_root = NULL;
101 static usec_t arg_when = 0;
102 static enum action {
103         ACTION_INVALID,
104         ACTION_SYSTEMCTL,
105         ACTION_HALT,
106         ACTION_POWEROFF,
107         ACTION_REBOOT,
108         ACTION_KEXEC,
109         ACTION_EXIT,
110         ACTION_SUSPEND,
111         ACTION_HIBERNATE,
112         ACTION_HYBRID_SLEEP,
113         ACTION_RUNLEVEL2,
114         ACTION_RUNLEVEL3,
115         ACTION_RUNLEVEL4,
116         ACTION_RUNLEVEL5,
117         ACTION_RESCUE,
118         ACTION_EMERGENCY,
119         ACTION_DEFAULT,
120         ACTION_RELOAD,
121         ACTION_REEXEC,
122         ACTION_RUNLEVEL,
123         ACTION_CANCEL_SHUTDOWN,
124         _ACTION_MAX
125 } arg_action = ACTION_SYSTEMCTL;
126 static enum transport {
127         TRANSPORT_NORMAL,
128         TRANSPORT_SSH,
129         TRANSPORT_POLKIT
130 } arg_transport = TRANSPORT_NORMAL;
131 static char *arg_host = NULL;
132 static char *arg_user = NULL;
133 static unsigned arg_lines = 10;
134 static OutputMode arg_output = OUTPUT_SHORT;
135 static bool arg_plain = false;
136
137 static bool private_bus = false;
138
139 static int daemon_reload(DBusConnection *bus, char **args);
140 static void halt_now(enum action a);
141
142 static void pager_open_if_enabled(void) {
143
144         if (arg_no_pager)
145                 return;
146
147         pager_open(false);
148 }
149
150 static void ask_password_agent_open_if_enabled(void) {
151
152         /* Open the password agent as a child process if necessary */
153
154         if (!arg_ask_password)
155                 return;
156
157         if (arg_scope != UNIT_FILE_SYSTEM)
158                 return;
159
160         ask_password_agent_open();
161 }
162
163 #ifdef HAVE_LOGIND
164 static void polkit_agent_open_if_enabled(void) {
165
166         /* Open the polkit agent as a child process if necessary */
167
168         if (!arg_ask_password)
169                 return;
170
171         if (arg_scope != UNIT_FILE_SYSTEM)
172                 return;
173
174         polkit_agent_open();
175 }
176 #endif
177
178 static int translate_bus_error_to_exit_status(int r, const DBusError *error) {
179         assert(error);
180
181         if (!dbus_error_is_set(error))
182                 return r;
183
184         if (dbus_error_has_name(error, DBUS_ERROR_ACCESS_DENIED) ||
185             dbus_error_has_name(error, BUS_ERROR_ONLY_BY_DEPENDENCY) ||
186             dbus_error_has_name(error, BUS_ERROR_NO_ISOLATION) ||
187             dbus_error_has_name(error, BUS_ERROR_TRANSACTION_IS_DESTRUCTIVE))
188                 return EXIT_NOPERMISSION;
189
190         if (dbus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT))
191                 return EXIT_NOTINSTALLED;
192
193         if (dbus_error_has_name(error, BUS_ERROR_JOB_TYPE_NOT_APPLICABLE) ||
194             dbus_error_has_name(error, BUS_ERROR_NOT_SUPPORTED))
195                 return EXIT_NOTIMPLEMENTED;
196
197         if (dbus_error_has_name(error, BUS_ERROR_LOAD_FAILED))
198                 return EXIT_NOTCONFIGURED;
199
200         if (r != 0)
201                 return r;
202
203         return EXIT_FAILURE;
204 }
205
206 static void warn_wall(enum action a) {
207         static const char *table[_ACTION_MAX] = {
208                 [ACTION_HALT]            = "The system is going down for system halt NOW!",
209                 [ACTION_REBOOT]          = "The system is going down for reboot NOW!",
210                 [ACTION_POWEROFF]        = "The system is going down for power-off NOW!",
211                 [ACTION_KEXEC]           = "The system is going down for kexec reboot NOW!",
212                 [ACTION_RESCUE]          = "The system is going down to rescue mode NOW!",
213                 [ACTION_EMERGENCY]       = "The system is going down to emergency mode NOW!",
214                 [ACTION_CANCEL_SHUTDOWN] = "The system shutdown has been cancelled NOW!"
215         };
216
217         if (arg_no_wall)
218                 return;
219
220         if (arg_wall) {
221                 _cleanup_free_ char *p;
222
223                 p = strv_join(arg_wall, " ");
224                 if (!p) {
225                         log_oom();
226                         return;
227                 }
228
229                 if (*p) {
230                         utmp_wall(p, NULL);
231                         return;
232                 }
233         }
234
235         if (!table[a])
236                 return;
237
238         utmp_wall(table[a], NULL);
239 }
240
241 static bool avoid_bus(void) {
242
243         if (running_in_chroot() > 0)
244                 return true;
245
246         if (sd_booted() <= 0)
247                 return true;
248
249         if (!isempty(arg_root))
250                 return true;
251
252         if (arg_scope == UNIT_FILE_GLOBAL)
253                 return true;
254
255         return false;
256 }
257
258 static int compare_unit_info(const void *a, const void *b) {
259         const char *d1, *d2;
260         const struct unit_info *u = a, *v = b;
261
262         d1 = strrchr(u->id, '.');
263         d2 = strrchr(v->id, '.');
264
265         if (d1 && d2) {
266                 int r;
267
268                 r = strcasecmp(d1, d2);
269                 if (r != 0)
270                         return r;
271         }
272
273         return strcasecmp(u->id, v->id);
274 }
275
276 static bool output_show_unit(const struct unit_info *u) {
277         const char *dot;
278
279         if (!strv_isempty(arg_states))
280                 return strv_contains(arg_states, u->load_state) || strv_contains(arg_states, u->sub_state) || strv_contains(arg_states, u->active_state);
281
282         return (!arg_types || ((dot = strrchr(u->id, '.')) &&
283                                strv_find(arg_types, dot+1))) &&
284                 (arg_all || !(streq(u->active_state, "inactive")
285                               || u->following[0]) || u->job_id > 0);
286 }
287
288 static void output_units_list(const struct unit_info *unit_infos, unsigned c) {
289         unsigned id_len, max_id_len, active_len, sub_len, job_len, desc_len, n_shown = 0;
290         const struct unit_info *u;
291         int job_count = 0;
292
293         max_id_len = sizeof("UNIT")-1;
294         active_len = sizeof("ACTIVE")-1;
295         sub_len = sizeof("SUB")-1;
296         job_len = sizeof("JOB")-1;
297         desc_len = 0;
298
299         for (u = unit_infos; u < unit_infos + c; u++) {
300                 if (!output_show_unit(u))
301                         continue;
302
303                 max_id_len = MAX(max_id_len, strlen(u->id));
304                 active_len = MAX(active_len, strlen(u->active_state));
305                 sub_len = MAX(sub_len, strlen(u->sub_state));
306                 if (u->job_id != 0) {
307                         job_len = MAX(job_len, strlen(u->job_type));
308                         job_count++;
309                 }
310         }
311
312         if (!arg_full) {
313                 unsigned basic_len;
314                 id_len = MIN(max_id_len, 25u);
315                 basic_len = 5 + id_len + 5 + active_len + sub_len;
316                 if (job_count)
317                         basic_len += job_len + 1;
318                 if (basic_len < (unsigned) columns()) {
319                         unsigned extra_len, incr;
320                         extra_len = columns() - basic_len;
321                         /* Either UNIT already got 25, or is fully satisfied.
322                          * Grant up to 25 to DESC now. */
323                         incr = MIN(extra_len, 25u);
324                         desc_len += incr;
325                         extra_len -= incr;
326                         /* split the remaining space between UNIT and DESC,
327                          * but do not give UNIT more than it needs. */
328                         if (extra_len > 0) {
329                                 incr = MIN(extra_len / 2, max_id_len - id_len);
330                                 id_len += incr;
331                                 desc_len += extra_len - incr;
332                         }
333                 }
334         } else
335                 id_len = max_id_len;
336
337         for (u = unit_infos; u < unit_infos + c; u++) {
338                 _cleanup_free_ char *e = NULL;
339                 const char *on_loaded, *off_loaded, *on = "";
340                 const char *on_active, *off_active, *off = "";
341
342                 if (!output_show_unit(u))
343                         continue;
344
345                 if (!n_shown && !arg_no_legend) {
346                         printf("%-*s %-6s %-*s %-*s ", id_len, "UNIT", "LOAD",
347                                active_len, "ACTIVE", sub_len, "SUB");
348                         if (job_count)
349                                 printf("%-*s ", job_len, "JOB");
350                         if (!arg_full && arg_no_pager)
351                                 printf("%.*s\n", desc_len, "DESCRIPTION");
352                         else
353                                 printf("%s\n", "DESCRIPTION");
354                 }
355
356                 n_shown++;
357
358                 if (streq(u->load_state, "error") ||
359                     streq(u->load_state, "not-found")) {
360                         on_loaded = on = ansi_highlight_red();
361                         off_loaded = off = ansi_highlight_off();
362                 } else
363                         on_loaded = off_loaded = "";
364
365                 if (streq(u->active_state, "failed")) {
366                         on_active = on = ansi_highlight_red();
367                         off_active = off = ansi_highlight_off();
368                 } else
369                         on_active = off_active = "";
370
371                 e = arg_full ? NULL : ellipsize(u->id, id_len, 33);
372
373                 printf("%s%-*s%s %s%-6s%s %s%-*s %-*s%s %-*s",
374                        on, id_len, e ? e : u->id, off,
375                        on_loaded, u->load_state, off_loaded,
376                        on_active, active_len, u->active_state,
377                        sub_len, u->sub_state, off_active,
378                        job_count ? job_len + 1 : 0, u->job_id ? u->job_type : "");
379                 if (!arg_full && arg_no_pager)
380                         printf("%.*s\n", desc_len, u->description);
381                 else
382                         printf("%s\n", u->description);
383         }
384
385         if (!arg_no_legend) {
386                 const char *on, *off;
387
388                 if (n_shown) {
389                         printf("\nLOAD   = Reflects whether the unit definition was properly loaded.\n"
390                                "ACTIVE = The high-level unit activation state, i.e. generalization of SUB.\n"
391                                "SUB    = The low-level unit activation state, values depend on unit type.\n");
392                         if (job_count)
393                                 printf("JOB    = Pending job for the unit.\n");
394                         puts("");
395                         on = ansi_highlight();
396                         off = ansi_highlight_off();
397                 } else {
398                         on = ansi_highlight_red();
399                         off = ansi_highlight_off();
400                 }
401
402                 if (arg_all)
403                         printf("%s%u loaded units listed.%s\n"
404                                "To show all installed unit files use 'systemctl list-unit-files'.\n",
405                                on, n_shown, off);
406                 else
407                         printf("%s%u loaded units listed.%s Pass --all to see loaded but inactive units, too.\n"
408                                "To show all installed unit files use 'systemctl list-unit-files'.\n",
409                                on, n_shown, off);
410         }
411 }
412
413 static int get_unit_list(
414                 DBusConnection *bus,
415                 DBusMessage **reply,
416                 struct unit_info **unit_infos,
417                 unsigned *c) {
418
419         DBusMessageIter iter, sub;
420         size_t size = 0;
421         int r;
422
423         assert(bus);
424         assert(unit_infos);
425         assert(c);
426
427         r = bus_method_call_with_reply(
428                         bus,
429                         "org.freedesktop.systemd1",
430                         "/org/freedesktop/systemd1",
431                         "org.freedesktop.systemd1.Manager",
432                         "ListUnits",
433                         reply,
434                         NULL,
435                         DBUS_TYPE_INVALID);
436         if (r < 0)
437                 return r;
438
439         if (!dbus_message_iter_init(*reply, &iter) ||
440             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
441             dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT)  {
442                 log_error("Failed to parse reply.");
443                 return -EIO;
444         }
445
446         dbus_message_iter_recurse(&iter, &sub);
447
448         while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
449                 if (!GREEDY_REALLOC(*unit_infos, size, *c + 1))
450                         return log_oom();
451
452                 bus_parse_unit_info(&sub, *unit_infos + *c);
453                 (*c)++;
454
455                 dbus_message_iter_next(&sub);
456         }
457
458         return 0;
459 }
460
461 static int list_units(DBusConnection *bus, char **args) {
462         _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
463         _cleanup_free_ struct unit_info *unit_infos = NULL;
464         unsigned c = 0;
465         int r;
466
467         pager_open_if_enabled();
468
469         r = get_unit_list(bus, &reply, &unit_infos, &c);
470         if (r < 0)
471                 return r;
472
473         qsort(unit_infos, c, sizeof(struct unit_info), compare_unit_info);
474
475         output_units_list(unit_infos, c);
476
477         return 0;
478 }
479
480 static int get_triggered_units(
481                 DBusConnection *bus,
482                 const char* unit_path,
483                 char*** triggered) {
484
485         const char *interface = "org.freedesktop.systemd1.Unit",
486                    *triggers_property = "Triggers";
487         _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
488         DBusMessageIter iter, sub;
489         int r;
490
491         r = bus_method_call_with_reply(bus,
492                                        "org.freedesktop.systemd1",
493                                        unit_path,
494                                        "org.freedesktop.DBus.Properties",
495                                        "Get",
496                                        &reply,
497                                        NULL,
498                                        DBUS_TYPE_STRING, &interface,
499                                        DBUS_TYPE_STRING, &triggers_property,
500                                        DBUS_TYPE_INVALID);
501         if (r < 0)
502                 return r;
503
504         if (!dbus_message_iter_init(reply, &iter) ||
505             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
506                 log_error("Failed to parse reply.");
507                 return -EBADMSG;
508         }
509
510         dbus_message_iter_recurse(&iter, &sub);
511         dbus_message_iter_recurse(&sub, &iter);
512         sub = iter;
513
514         while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
515                 const char *unit;
516
517                 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
518                         log_error("Failed to parse reply.");
519                         return -EBADMSG;
520                 }
521
522                 dbus_message_iter_get_basic(&sub, &unit);
523                 r = strv_extend(triggered, unit);
524                 if (r < 0)
525                         return r;
526
527                 dbus_message_iter_next(&sub);
528         }
529
530         return 0;
531 }
532
533 static int get_listening(DBusConnection *bus, const char* unit_path,
534                          char*** listen, unsigned *c)
535 {
536         const char *interface = "org.freedesktop.systemd1.Socket",
537                    *listen_property = "Listen";
538         _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
539         DBusMessageIter iter, sub;
540         int r;
541
542         r = bus_method_call_with_reply(bus,
543                                        "org.freedesktop.systemd1",
544                                        unit_path,
545                                        "org.freedesktop.DBus.Properties",
546                                        "Get",
547                                        &reply,
548                                        NULL,
549                                        DBUS_TYPE_STRING, &interface,
550                                        DBUS_TYPE_STRING, &listen_property,
551                                        DBUS_TYPE_INVALID);
552         if (r < 0)
553                 return r;
554
555         if (!dbus_message_iter_init(reply, &iter) ||
556             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
557                 log_error("Failed to parse reply.");
558                 return -EBADMSG;
559         }
560
561         dbus_message_iter_recurse(&iter, &sub);
562         dbus_message_iter_recurse(&sub, &iter);
563         sub = iter;
564
565         while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
566                 DBusMessageIter sub2;
567                 const char *type, *path;
568
569                 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
570                         log_error("Failed to parse reply.");
571                         return -EBADMSG;
572                 }
573
574                 dbus_message_iter_recurse(&sub, &sub2);
575
576                 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) >= 0 &&
577                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, false) >= 0) {
578                         r = strv_extend(listen, type);
579                         if (r < 0)
580                                 return r;
581
582                         r = strv_extend(listen, path);
583                         if (r < 0)
584                                 return r;
585
586                         (*c) ++;
587                 }
588
589                 dbus_message_iter_next(&sub);
590         }
591
592         return 0;
593 }
594
595 struct socket_info {
596         const char* id;
597
598         char* type;
599         char* path;
600
601         /* Note: triggered is a list here, although it almost certainly
602          * will always be one unit. Nevertheless, dbus API allows for multiple
603          * values, so let's follow that.*/
604         char** triggered;
605
606         /* The strv above is shared. free is set only in the first one. */
607         bool own_triggered;
608 };
609
610 static int socket_info_compare(struct socket_info *a, struct socket_info *b) {
611         int o = strcmp(a->path, b->path);
612         if (o == 0)
613                 o = strcmp(a->type, b->type);
614         return o;
615 }
616
617 static int output_sockets_list(struct socket_info *socket_infos, unsigned cs) {
618         struct socket_info *s;
619         unsigned pathlen = sizeof("LISTEN") - 1,
620                 typelen = (sizeof("TYPE") - 1) * arg_show_types,
621                 socklen = sizeof("UNIT") - 1,
622                 servlen = sizeof("ACTIVATES") - 1;
623         const char *on, *off;
624
625         for (s = socket_infos; s < socket_infos + cs; s++) {
626                 char **a;
627                 unsigned tmp = 0;
628
629                 socklen = MAX(socklen, strlen(s->id));
630                 if (arg_show_types)
631                         typelen = MAX(typelen, strlen(s->type));
632                 pathlen = MAX(pathlen, strlen(s->path));
633
634                 STRV_FOREACH(a, s->triggered)
635                         tmp += strlen(*a) + 2*(a != s->triggered);
636                 servlen = MAX(servlen, tmp);
637         }
638
639         if (cs) {
640                 if (!arg_no_legend)
641                         printf("%-*s %-*.*s%-*s %s\n",
642                                pathlen, "LISTEN",
643                                typelen + arg_show_types, typelen + arg_show_types, "TYPE ",
644                                socklen, "UNIT",
645                                "ACTIVATES");
646
647                 for (s = socket_infos; s < socket_infos + cs; s++) {
648                         char **a;
649
650                         if (arg_show_types)
651                                 printf("%-*s %-*s %-*s",
652                                        pathlen, s->path, typelen, s->type, socklen, s->id);
653                         else
654                                 printf("%-*s %-*s",
655                                        pathlen, s->path, socklen, s->id);
656                         STRV_FOREACH(a, s->triggered)
657                                 printf("%s %s",
658                                        a == s->triggered ? "" : ",", *a);
659                         printf("\n");
660                 }
661
662                 on = ansi_highlight();
663                 off = ansi_highlight_off();
664                 if (!arg_no_legend)
665                         printf("\n");
666         } else {
667                 on = ansi_highlight_red();
668                 off = ansi_highlight_off();
669         }
670
671         if (!arg_no_legend) {
672                 printf("%s%u sockets listed.%s\n", on, cs, off);
673                 if (!arg_all)
674                         printf("Pass --all to see loaded but inactive sockets, too.\n");
675         }
676
677         return 0;
678 }
679
680 static int list_sockets(DBusConnection *bus, char **args) {
681         _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
682         _cleanup_free_ struct unit_info *unit_infos = NULL;
683         struct socket_info *socket_infos = NULL;
684         const struct unit_info *u;
685         struct socket_info *s;
686         unsigned cu = 0, cs = 0;
687         size_t size = 0;
688         int r;
689
690         pager_open_if_enabled();
691
692         r = get_unit_list(bus, &reply, &unit_infos, &cu);
693         if (r < 0)
694                 return r;
695
696         for (u = unit_infos; u < unit_infos + cu; u++) {
697                 const char *dot;
698                 _cleanup_strv_free_ char **listen = NULL, **triggered = NULL;
699                 unsigned c = 0, i;
700
701                 if (!output_show_unit(u))
702                         continue;
703
704                 if ((dot = strrchr(u->id, '.')) && !streq(dot+1, "socket"))
705                         continue;
706
707                 r = get_triggered_units(bus, u->unit_path, &triggered);
708                 if (r < 0)
709                         goto cleanup;
710
711                 r = get_listening(bus, u->unit_path, &listen, &c);
712                 if (r < 0)
713                         goto cleanup;
714
715                 if (!GREEDY_REALLOC(socket_infos, size, cs + c)) {
716                         r = log_oom();
717                         goto cleanup;
718                 }
719
720                 for (i = 0; i < c; i++)
721                         socket_infos[cs + i] = (struct socket_info) {
722                                 .id = u->id,
723                                 .type = listen[i*2],
724                                 .path = listen[i*2 + 1],
725                                 .triggered = triggered,
726                                 .own_triggered = i==0,
727                         };
728
729                 /* from this point on we will cleanup those socket_infos */
730                 cs += c;
731                 free(listen);
732                 listen = triggered = NULL; /* avoid cleanup */
733         }
734
735         qsort(socket_infos, cs, sizeof(struct socket_info),
736               (__compar_fn_t) socket_info_compare);
737
738         output_sockets_list(socket_infos, cs);
739
740  cleanup:
741         assert(cs == 0 || socket_infos);
742         for (s = socket_infos; s < socket_infos + cs; s++) {
743                 free(s->type);
744                 free(s->path);
745                 if (s->own_triggered)
746                         strv_free(s->triggered);
747         }
748         free(socket_infos);
749
750         return 0;
751 }
752
753 static int compare_unit_file_list(const void *a, const void *b) {
754         const char *d1, *d2;
755         const UnitFileList *u = a, *v = b;
756
757         d1 = strrchr(u->path, '.');
758         d2 = strrchr(v->path, '.');
759
760         if (d1 && d2) {
761                 int r;
762
763                 r = strcasecmp(d1, d2);
764                 if (r != 0)
765                         return r;
766         }
767
768         return strcasecmp(path_get_file_name(u->path), path_get_file_name(v->path));
769 }
770
771 static bool output_show_unit_file(const UnitFileList *u) {
772         const char *dot;
773
774         return !arg_types || ((dot = strrchr(u->path, '.')) && strv_find(arg_types, dot+1));
775 }
776
777 static void output_unit_file_list(const UnitFileList *units, unsigned c) {
778         unsigned max_id_len, id_cols, state_cols, n_shown = 0;
779         const UnitFileList *u;
780
781         max_id_len = sizeof("UNIT FILE")-1;
782         state_cols = sizeof("STATE")-1;
783         for (u = units; u < units + c; u++) {
784                 if (!output_show_unit_file(u))
785                         continue;
786
787                 max_id_len = MAX(max_id_len, strlen(path_get_file_name(u->path)));
788                 state_cols = MAX(state_cols, strlen(unit_file_state_to_string(u->state)));
789         }
790
791         if (!arg_full) {
792                 unsigned basic_cols;
793                 id_cols = MIN(max_id_len, 25u);
794                 basic_cols = 1 + id_cols + state_cols;
795                 if (basic_cols < (unsigned) columns())
796                         id_cols += MIN(columns() - basic_cols, max_id_len - id_cols);
797         } else
798                 id_cols = max_id_len;
799
800         if (!arg_no_legend)
801                 printf("%-*s %-*s\n", id_cols, "UNIT FILE", state_cols, "STATE");
802
803         for (u = units; u < units + c; u++) {
804                 _cleanup_free_ char *e = NULL;
805                 const char *on, *off;
806                 const char *id;
807
808                 if (!output_show_unit_file(u))
809                         continue;
810
811                 n_shown++;
812
813                 if (u->state == UNIT_FILE_MASKED ||
814                     u->state == UNIT_FILE_MASKED_RUNTIME ||
815                     u->state == UNIT_FILE_DISABLED ||
816                     u->state == UNIT_FILE_INVALID) {
817                         on  = ansi_highlight_red();
818                         off = ansi_highlight_off();
819                 } else if (u->state == UNIT_FILE_ENABLED) {
820                         on  = ansi_highlight_green();
821                         off = ansi_highlight_off();
822                 } else
823                         on = off = "";
824
825                 id = path_get_file_name(u->path);
826
827                 e = arg_full ? NULL : ellipsize(id, id_cols, 33);
828
829                 printf("%-*s %s%-*s%s\n",
830                        id_cols, e ? e : id,
831                        on, state_cols, unit_file_state_to_string(u->state), off);
832         }
833
834         if (!arg_no_legend)
835                 printf("\n%u unit files listed.\n", n_shown);
836 }
837
838 static int list_unit_files(DBusConnection *bus, char **args) {
839         _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
840         _cleanup_free_ UnitFileList *units = NULL;
841         DBusMessageIter iter, sub, sub2;
842         unsigned c = 0, n_units = 0;
843         int r;
844
845         pager_open_if_enabled();
846
847         if (avoid_bus()) {
848                 Hashmap *h;
849                 UnitFileList *u;
850                 Iterator i;
851
852                 h = hashmap_new(string_hash_func, string_compare_func);
853                 if (!h)
854                         return log_oom();
855
856                 r = unit_file_get_list(arg_scope, arg_root, h);
857                 if (r < 0) {
858                         unit_file_list_free(h);
859                         log_error("Failed to get unit file list: %s", strerror(-r));
860                         return r;
861                 }
862
863                 n_units = hashmap_size(h);
864                 units = new(UnitFileList, n_units);
865                 if (!units) {
866                         unit_file_list_free(h);
867                         return log_oom();
868                 }
869
870                 HASHMAP_FOREACH(u, h, i) {
871                         memcpy(units + c++, u, sizeof(UnitFileList));
872                         free(u);
873                 }
874
875                 hashmap_free(h);
876         } else {
877                 r = bus_method_call_with_reply(
878                                 bus,
879                                 "org.freedesktop.systemd1",
880                                 "/org/freedesktop/systemd1",
881                                 "org.freedesktop.systemd1.Manager",
882                                 "ListUnitFiles",
883                                 &reply,
884                                 NULL,
885                                 DBUS_TYPE_INVALID);
886                 if (r < 0)
887                         return r;
888
889                 if (!dbus_message_iter_init(reply, &iter) ||
890                     dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
891                     dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT)  {
892                         log_error("Failed to parse reply.");
893                         return -EIO;
894                 }
895
896                 dbus_message_iter_recurse(&iter, &sub);
897
898                 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
899                         UnitFileList *u;
900                         const char *state;
901
902                         assert(dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT);
903
904                         if (c >= n_units) {
905                                 UnitFileList *w;
906
907                                 n_units = MAX(2*c, 16u);
908                                 w = realloc(units, sizeof(struct UnitFileList) * n_units);
909                                 if (!w)
910                                         return log_oom();
911
912                                 units = w;
913                         }
914
915                         u = units + c;
916
917                         dbus_message_iter_recurse(&sub, &sub2);
918
919                         if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->path, true) < 0 ||
920                             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &state, false) < 0) {
921                                 log_error("Failed to parse reply.");
922                                 return -EIO;
923                         }
924
925                         u->state = unit_file_state_from_string(state);
926
927                         dbus_message_iter_next(&sub);
928                         c++;
929                 }
930         }
931
932         if (c > 0) {
933                 qsort(units, c, sizeof(UnitFileList), compare_unit_file_list);
934                 output_unit_file_list(units, c);
935         }
936
937         return 0;
938 }
939
940 static int list_dependencies_print(const char *name, int level, unsigned int branches, bool last) {
941         int i;
942         _cleanup_free_ char *n = NULL;
943         size_t len = 0;
944         size_t max_len = MAX(columns(),20u);
945
946         if (!arg_plain) {
947                 for (i = level - 1; i >= 0; i--) {
948                         len += 2;
949                         if(len > max_len - 3 && !arg_full) {
950                                 printf("%s...\n",max_len % 2 ? "" : " ");
951                                 return 0;
952                         }
953                         printf("%s", draw_special_char(branches & (1 << i) ? DRAW_TREE_VERT : DRAW_TREE_SPACE));
954                 }
955                 len += 2;
956                 if(len > max_len - 3 && !arg_full) {
957                         printf("%s...\n",max_len % 2 ? "" : " ");
958                         return 0;
959                 }
960                 printf("%s", draw_special_char(last ? DRAW_TREE_RIGHT : DRAW_TREE_BRANCH));
961         }
962
963         if(arg_full){
964                 printf("%s\n", name);
965                 return 0;
966         }
967
968         n = ellipsize(name, max_len-len, 100);
969         if(!n)
970                 return log_oom();
971
972         printf("%s\n", n);
973         return 0;
974 }
975
976 static int list_dependencies_get_dependencies(DBusConnection *bus, const char *name, char ***deps) {
977         static const char *dependencies[] = {
978                 [DEPENDENCY_FORWARD] = "Requires\0"
979                                        "RequiresOverridable\0"
980                                        "Requisite\0"
981                                        "RequisiteOverridable\0"
982                                        "Wants\0",
983                 [DEPENDENCY_REVERSE] = "RequiredBy\0"
984                                        "RequiredByOverridable\0"
985                                        "WantedBy\0"
986                                        "PartOf\0",
987                 [DEPENDENCY_AFTER]   = "After\0",
988                 [DEPENDENCY_BEFORE]  = "Before\0",
989         };
990
991         _cleanup_free_ char *path;
992         const char *interface = "org.freedesktop.systemd1.Unit";
993
994         _cleanup_dbus_message_unref_  DBusMessage *reply = NULL;
995         DBusMessageIter iter, sub, sub2, sub3;
996
997         int r = 0;
998         char **ret = NULL;
999
1000         assert(bus);
1001         assert(name);
1002         assert(deps);
1003
1004         path = unit_dbus_path_from_name(name);
1005         if (path == NULL) {
1006                 r = -EINVAL;
1007                 goto finish;
1008         }
1009
1010         r = bus_method_call_with_reply(
1011                 bus,
1012                 "org.freedesktop.systemd1",
1013                 path,
1014                 "org.freedesktop.DBus.Properties",
1015                 "GetAll",
1016                 &reply,
1017                 NULL,
1018                 DBUS_TYPE_STRING, &interface,
1019                 DBUS_TYPE_INVALID);
1020         if (r < 0)
1021                 goto finish;
1022
1023         if (!dbus_message_iter_init(reply, &iter) ||
1024                 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
1025                 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_DICT_ENTRY) {
1026                 log_error("Failed to parse reply.");
1027                 r = -EIO;
1028                 goto finish;
1029         }
1030
1031         dbus_message_iter_recurse(&iter, &sub);
1032
1033         while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
1034                 const char *prop;
1035
1036                 assert(dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_DICT_ENTRY);
1037                 dbus_message_iter_recurse(&sub, &sub2);
1038
1039                 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &prop, true) < 0) {
1040                         log_error("Failed to parse reply.");
1041                         r = -EIO;
1042                         goto finish;
1043                 }
1044
1045                 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT) {
1046                         log_error("Failed to parse reply.");
1047                         r = -EIO;
1048                         goto finish;
1049                 }
1050
1051                 dbus_message_iter_recurse(&sub2, &sub3);
1052                 dbus_message_iter_next(&sub);
1053
1054                 assert(arg_dependency < ELEMENTSOF(dependencies));
1055                 if (!nulstr_contains(dependencies[arg_dependency], prop))
1056                         continue;
1057
1058                 if (dbus_message_iter_get_arg_type(&sub3) == DBUS_TYPE_ARRAY) {
1059                         if (dbus_message_iter_get_element_type(&sub3) == DBUS_TYPE_STRING) {
1060                                 DBusMessageIter sub4;
1061                                 dbus_message_iter_recurse(&sub3, &sub4);
1062
1063                                 while (dbus_message_iter_get_arg_type(&sub4) != DBUS_TYPE_INVALID) {
1064                                         const char *s;
1065
1066                                         assert(dbus_message_iter_get_arg_type(&sub4) == DBUS_TYPE_STRING);
1067                                         dbus_message_iter_get_basic(&sub4, &s);
1068
1069                                         r = strv_extend(&ret, s);
1070                                         if (r < 0) {
1071                                                 log_oom();
1072                                                 goto finish;
1073                                         }
1074
1075                                         dbus_message_iter_next(&sub4);
1076                                 }
1077                         }
1078                 }
1079         }
1080 finish:
1081         if (r < 0)
1082                 strv_free(ret);
1083         else
1084                 *deps = ret;
1085         return r;
1086 }
1087
1088 static int list_dependencies_compare(const void *_a, const void *_b) {
1089         const char **a = (const char**) _a, **b = (const char**) _b;
1090         if (unit_name_to_type(*a) == UNIT_TARGET && unit_name_to_type(*b) != UNIT_TARGET)
1091                 return 1;
1092         if (unit_name_to_type(*a) != UNIT_TARGET && unit_name_to_type(*b) == UNIT_TARGET)
1093                 return -1;
1094         return strcasecmp(*a, *b);
1095 }
1096
1097 static int list_dependencies_one(DBusConnection *bus, const char *name, int level, char ***units, unsigned int branches) {
1098         _cleanup_strv_free_ char **deps = NULL, **u;
1099         char **c;
1100         int r = 0;
1101
1102         u = strv_append(*units, name);
1103         if (!u)
1104                 return log_oom();
1105
1106         r = list_dependencies_get_dependencies(bus, name, &deps);
1107         if (r < 0)
1108                 return r;
1109
1110         qsort(deps, strv_length(deps), sizeof (char*), list_dependencies_compare);
1111
1112         STRV_FOREACH(c, deps) {
1113                 if (strv_contains(u, *c)) {
1114                         if (!arg_plain) {
1115                                 r = list_dependencies_print("...", level + 1, (branches << 1) | (c[1] == NULL ? 0 : 1), 1);
1116                                 if (r < 0)
1117                                         return r;
1118                         }
1119                         continue;
1120                 }
1121
1122                 r = list_dependencies_print(*c, level, branches, c[1] == NULL);
1123                 if (r < 0)
1124                         return r;
1125
1126                 if (arg_all || unit_name_to_type(*c) == UNIT_TARGET) {
1127                        r = list_dependencies_one(bus, *c, level + 1, &u, (branches << 1) | (c[1] == NULL ? 0 : 1));
1128                        if(r < 0)
1129                                return r;
1130                 }
1131         }
1132         if (arg_plain) {
1133                 strv_free(*units);
1134                 *units = u;
1135                 u = NULL;
1136         }
1137         return 0;
1138 }
1139
1140 static int list_dependencies(DBusConnection *bus, char **args) {
1141         _cleanup_free_ char *unit = NULL;
1142         _cleanup_strv_free_ char **units = NULL;
1143         const char *u;
1144
1145         assert(bus);
1146
1147         if (args[1]) {
1148                 unit = unit_name_mangle(args[1]);
1149                 if (!unit)
1150                         return log_oom();
1151                 u = unit;
1152         } else
1153                 u = SPECIAL_DEFAULT_TARGET;
1154
1155         pager_open_if_enabled();
1156
1157         puts(u);
1158
1159         return list_dependencies_one(bus, u, 0, &units, 0);
1160 }
1161
1162 static int get_default(DBusConnection *bus, char **args) {
1163         char *path = NULL;
1164         _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
1165         int r;
1166         _cleanup_dbus_error_free_ DBusError error;
1167
1168         dbus_error_init(&error);
1169
1170         if (!bus || avoid_bus()) {
1171                 r = unit_file_get_default(arg_scope, arg_root, &path);
1172
1173                 if (r < 0) {
1174                         log_error("Operation failed: %s", strerror(-r));
1175                         goto finish;
1176                 }
1177
1178                 r = 0;
1179         } else {
1180                 r = bus_method_call_with_reply(
1181                         bus,
1182                         "org.freedesktop.systemd1",
1183                         "/org/freedesktop/systemd1",
1184                         "org.freedesktop.systemd1.Manager",
1185                         "GetDefaultTarget",
1186                         &reply,
1187                         NULL,
1188                         DBUS_TYPE_INVALID);
1189
1190                 if (r < 0) {
1191                         log_error("Operation failed: %s", strerror(-r));
1192                         goto finish;
1193                 }
1194
1195                 if (!dbus_message_get_args(reply, &error,
1196                                    DBUS_TYPE_STRING, &path,
1197                                    DBUS_TYPE_INVALID)) {
1198                         log_error("Failed to parse reply: %s", bus_error_message(&error));
1199                         dbus_error_free(&error);
1200                         return  -EIO;
1201                 }
1202         }
1203
1204         if (path)
1205                 printf("%s\n", path);
1206
1207 finish:
1208         if ((!bus || avoid_bus()) && path)
1209                 free(path);
1210
1211         return r;
1212
1213 }
1214
1215 struct job_info {
1216         uint32_t id;
1217         char *name, *type, *state;
1218 };
1219
1220 static void list_jobs_print(struct job_info* jobs, size_t n) {
1221         size_t i;
1222         struct job_info *j;
1223         const char *on, *off;
1224         bool shorten = false;
1225
1226         assert(n == 0 || jobs);
1227
1228         if (n == 0) {
1229                 on = ansi_highlight_green();
1230                 off = ansi_highlight_off();
1231
1232                 printf("%sNo jobs running.%s\n", on, off);
1233                 return;
1234         }
1235
1236         pager_open_if_enabled();
1237
1238         {
1239                 /* JOB UNIT TYPE STATE */
1240                 unsigned l0 = 3, l1 = 4, l2 = 4, l3 = 5;
1241
1242                 for (i = 0, j = jobs; i < n; i++, j++) {
1243                         assert(j->name && j->type && j->state);
1244                         l0 = MAX(l0, DECIMAL_STR_WIDTH(j->id));
1245                         l1 = MAX(l1, strlen(j->name));
1246                         l2 = MAX(l2, strlen(j->type));
1247                         l3 = MAX(l3, strlen(j->state));
1248                 }
1249
1250                 if (!arg_full && l0 + 1 + l1 + l2 + 1 + l3 > columns()) {
1251                         l1 = MAX(33u, columns() - l0 - l2 - l3 - 3);
1252                         shorten = true;
1253                 }
1254
1255                 if (on_tty())
1256                         printf("%*s %-*s %-*s %-*s\n",
1257                                l0, "JOB",
1258                                l1, "UNIT",
1259                                l2, "TYPE",
1260                                l3, "STATE");
1261
1262                 for (i = 0, j = jobs; i < n; i++, j++) {
1263                         _cleanup_free_ char *e = NULL;
1264
1265                         if (streq(j->state, "running")) {
1266                                 on = ansi_highlight();
1267                                 off = ansi_highlight_off();
1268                         } else
1269                                 on = off = "";
1270
1271                         e = shorten ? ellipsize(j->name, l1, 33) : NULL;
1272                         printf("%*u %s%-*s%s %-*s %s%-*s%s\n",
1273                                l0, j->id,
1274                                on, l1, e ? e : j->name, off,
1275                                l2, j->type,
1276                                on, l3, j->state, off);
1277                 }
1278         }
1279
1280         on = ansi_highlight();
1281         off = ansi_highlight_off();
1282
1283         if (on_tty())
1284                 printf("\n%s%zu jobs listed%s.\n", on, n, off);
1285 }
1286
1287 static int list_jobs(DBusConnection *bus, char **args) {
1288         _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
1289         DBusMessageIter iter, sub, sub2;
1290         int r;
1291         struct job_info *jobs = NULL;
1292         size_t size = 0, used = 0;
1293
1294         r = bus_method_call_with_reply(
1295                         bus,
1296                         "org.freedesktop.systemd1",
1297                         "/org/freedesktop/systemd1",
1298                         "org.freedesktop.systemd1.Manager",
1299                         "ListJobs",
1300                         &reply,
1301                         NULL,
1302                         DBUS_TYPE_INVALID);
1303         if (r < 0)
1304                 return r;
1305
1306         if (!dbus_message_iter_init(reply, &iter) ||
1307             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
1308             dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT)  {
1309                 log_error("Failed to parse reply.");
1310                 return -EIO;
1311         }
1312
1313         dbus_message_iter_recurse(&iter, &sub);
1314
1315         while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
1316                 const char *name, *type, *state, *job_path, *unit_path;
1317                 uint32_t id;
1318
1319                 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
1320                         log_error("Failed to parse reply.");
1321                         return -EIO;
1322                 }
1323
1324                 dbus_message_iter_recurse(&sub, &sub2);
1325
1326                 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &id, true) < 0 ||
1327                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0 ||
1328                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) < 0 ||
1329                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &state, true) < 0 ||
1330                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &job_path, true) < 0 ||
1331                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &unit_path, false) < 0) {
1332                         log_error("Failed to parse reply.");
1333                         r = -EIO;
1334                         goto finish;
1335                 }
1336
1337                 if (!GREEDY_REALLOC(jobs, size, used + 1)) {
1338                         r = log_oom();
1339                         goto finish;
1340                 }
1341
1342                 jobs[used++] = (struct job_info) { id,
1343                                                    strdup(name),
1344                                                    strdup(type),
1345                                                    strdup(state) };
1346                 if (!jobs[used-1].name || !jobs[used-1].type || !jobs[used-1].state) {
1347                         r = log_oom();
1348                         goto finish;
1349                 }
1350
1351                 dbus_message_iter_next(&sub);
1352         }
1353
1354         list_jobs_print(jobs, used);
1355
1356  finish:
1357         while (used--) {
1358                 free(jobs[used].name);
1359                 free(jobs[used].type);
1360                 free(jobs[used].state);
1361         }
1362         free(jobs);
1363
1364         return 0;
1365 }
1366
1367 static int cancel_job(DBusConnection *bus, char **args) {
1368         char **name;
1369
1370         assert(args);
1371
1372         if (strv_length(args) <= 1)
1373                 return daemon_reload(bus, args);
1374
1375         STRV_FOREACH(name, args+1) {
1376                 uint32_t id;
1377                 int r;
1378
1379                 r = safe_atou32(*name, &id);
1380                 if (r < 0) {
1381                         log_error("Failed to parse job id: %s", strerror(-r));
1382                         return r;
1383                 }
1384
1385                 r = bus_method_call_with_reply(
1386                                 bus,
1387                                 "org.freedesktop.systemd1",
1388                                 "/org/freedesktop/systemd1",
1389                                 "org.freedesktop.systemd1.Manager",
1390                                 "CancelJob",
1391                                 NULL,
1392                                 NULL,
1393                                 DBUS_TYPE_UINT32, &id,
1394                                 DBUS_TYPE_INVALID);
1395                 if (r < 0)
1396                         return r;
1397         }
1398
1399         return 0;
1400 }
1401
1402 static int need_daemon_reload(DBusConnection *bus, const char *unit) {
1403         _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
1404         _cleanup_dbus_error_free_ DBusError error;
1405         dbus_bool_t b = FALSE;
1406         DBusMessageIter iter, sub;
1407         const char
1408                 *interface = "org.freedesktop.systemd1.Unit",
1409                 *property = "NeedDaemonReload",
1410                 *path;
1411         _cleanup_free_ char *n = NULL;
1412         int r;
1413
1414         dbus_error_init(&error);
1415
1416         /* We ignore all errors here, since this is used to show a warning only */
1417
1418         n = unit_name_mangle(unit);
1419         if (!n)
1420                 return log_oom();
1421
1422         r = bus_method_call_with_reply(
1423                         bus,
1424                         "org.freedesktop.systemd1",
1425                         "/org/freedesktop/systemd1",
1426                         "org.freedesktop.systemd1.Manager",
1427                         "GetUnit",
1428                         &reply,
1429                         &error,
1430                         DBUS_TYPE_STRING, &n,
1431                         DBUS_TYPE_INVALID);
1432         if (r < 0)
1433                 return r;
1434
1435         if (!dbus_message_get_args(reply, NULL,
1436                                    DBUS_TYPE_OBJECT_PATH, &path,
1437                                    DBUS_TYPE_INVALID))
1438                 return -EIO;
1439
1440         dbus_message_unref(reply);
1441         reply = NULL;
1442
1443         r = bus_method_call_with_reply(
1444                         bus,
1445                         "org.freedesktop.systemd1",
1446                         path,
1447                         "org.freedesktop.DBus.Properties",
1448                         "Get",
1449                         &reply,
1450                         &error,
1451                         DBUS_TYPE_STRING, &interface,
1452                         DBUS_TYPE_STRING, &property,
1453                         DBUS_TYPE_INVALID);
1454         if (r < 0)
1455                 return r;
1456
1457         if (!dbus_message_iter_init(reply, &iter) ||
1458             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT)
1459                 return -EIO;
1460
1461         dbus_message_iter_recurse(&iter, &sub);
1462         if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_BOOLEAN)
1463                 return -EIO;
1464
1465         dbus_message_iter_get_basic(&sub, &b);
1466         return b;
1467 }
1468
1469 typedef struct WaitData {
1470         Set *set;
1471
1472         char *name;
1473         char *result;
1474 } WaitData;
1475
1476 static DBusHandlerResult wait_filter(DBusConnection *connection, DBusMessage *message, void *data) {
1477         _cleanup_dbus_error_free_ DBusError error;
1478         WaitData *d = data;
1479
1480         dbus_error_init(&error);
1481
1482         assert(connection);
1483         assert(message);
1484         assert(d);
1485
1486         log_debug("Got D-Bus request: %s.%s() on %s",
1487                   dbus_message_get_interface(message),
1488                   dbus_message_get_member(message),
1489                   dbus_message_get_path(message));
1490
1491         if (dbus_message_is_signal(message, DBUS_INTERFACE_LOCAL, "Disconnected")) {
1492                 log_error("Warning! D-Bus connection terminated.");
1493                 dbus_connection_close(connection);
1494
1495         } else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "JobRemoved")) {
1496                 uint32_t id;
1497                 const char *path, *result, *unit, *r;
1498
1499                 if (dbus_message_get_args(message, &error,
1500                                           DBUS_TYPE_UINT32, &id,
1501                                           DBUS_TYPE_OBJECT_PATH, &path,
1502                                           DBUS_TYPE_STRING, &unit,
1503                                           DBUS_TYPE_STRING, &result,
1504                                           DBUS_TYPE_INVALID)) {
1505
1506                         r = set_remove(d->set, (char*) path);
1507                         if (!r)
1508                                 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1509
1510                         free(r);
1511
1512                         if (!isempty(result))
1513                                 d->result = strdup(result);
1514
1515                         if (!isempty(unit))
1516                                 d->name = strdup(unit);
1517
1518                         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1519                 }
1520 #ifndef NOLEGACY
1521                 dbus_error_free(&error);
1522                 if (dbus_message_get_args(message, &error,
1523                                           DBUS_TYPE_UINT32, &id,
1524                                           DBUS_TYPE_OBJECT_PATH, &path,
1525                                           DBUS_TYPE_STRING, &result,
1526                                           DBUS_TYPE_INVALID)) {
1527                         /* Compatibility with older systemd versions <
1528                          * 183 during upgrades. This should be dropped
1529                          * one day. */
1530                         r = set_remove(d->set, (char*) path);
1531                         if (!r)
1532                                 return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1533
1534                         free(r);
1535
1536                         if (*result)
1537                                 d->result = strdup(result);
1538
1539                         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1540                 }
1541 #endif
1542
1543                 log_error("Failed to parse message: %s", bus_error_message(&error));
1544         }
1545
1546         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1547 }
1548
1549 static int enable_wait_for_jobs(DBusConnection *bus) {
1550         DBusError error;
1551
1552         assert(bus);
1553
1554         if (private_bus)
1555                 return 0;
1556
1557         dbus_error_init(&error);
1558         dbus_bus_add_match(bus,
1559                            "type='signal',"
1560                            "sender='org.freedesktop.systemd1',"
1561                            "interface='org.freedesktop.systemd1.Manager',"
1562                            "member='JobRemoved',"
1563                            "path='/org/freedesktop/systemd1'",
1564                            &error);
1565
1566         if (dbus_error_is_set(&error)) {
1567                 log_error("Failed to add match: %s", bus_error_message(&error));
1568                 dbus_error_free(&error);
1569                 return -EIO;
1570         }
1571
1572         /* This is slightly dirty, since we don't undo the match registrations. */
1573         return 0;
1574 }
1575
1576 static int wait_for_jobs(DBusConnection *bus, Set *s) {
1577         int r = 0;
1578         WaitData d = { .set = s };
1579
1580         assert(bus);
1581         assert(s);
1582
1583         if (!dbus_connection_add_filter(bus, wait_filter, &d, NULL))
1584                 return log_oom();
1585
1586         while (!set_isempty(s)) {
1587
1588                 if (!dbus_connection_read_write_dispatch(bus, -1)) {
1589                         log_error("Disconnected from bus.");
1590                         return -ECONNREFUSED;
1591                 }
1592
1593                 if (!d.result)
1594                         goto free_name;
1595
1596                 if (!arg_quiet) {
1597                         if (streq(d.result, "timeout"))
1598                                 log_error("Job for %s timed out.", strna(d.name));
1599                         else if (streq(d.result, "canceled"))
1600                                 log_error("Job for %s canceled.", strna(d.name));
1601                         else if (streq(d.result, "dependency"))
1602                                 log_error("A dependency job for %s failed. See 'journalctl -xn' for details.", strna(d.name));
1603                         else if (!streq(d.result, "done") && !streq(d.result, "skipped"))
1604                                 log_error("Job for %s failed. See 'systemctl status %s' and 'journalctl -xn' for details.", strna(d.name), strna(d.name));
1605                 }
1606
1607                 if (streq_ptr(d.result, "timeout"))
1608                         r = -ETIME;
1609                 else if (streq_ptr(d.result, "canceled"))
1610                         r = -ECANCELED;
1611                 else if (!streq_ptr(d.result, "done") && !streq_ptr(d.result, "skipped"))
1612                         r = -EIO;
1613
1614                 free(d.result);
1615                 d.result = NULL;
1616
1617         free_name:
1618                 free(d.name);
1619                 d.name = NULL;
1620         }
1621
1622         dbus_connection_remove_filter(bus, wait_filter, &d);
1623         return r;
1624 }
1625
1626 static int check_one_unit(DBusConnection *bus, const char *name, char **check_states, bool quiet) {
1627         _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
1628         _cleanup_free_ char *n = NULL;
1629         DBusMessageIter iter, sub;
1630         const char
1631                 *interface = "org.freedesktop.systemd1.Unit",
1632                 *property = "ActiveState";
1633         const char *state, *path;
1634         DBusError error;
1635         int r;
1636
1637         assert(name);
1638
1639         dbus_error_init(&error);
1640
1641         n = unit_name_mangle(name);
1642         if (!n)
1643                 return log_oom();
1644
1645         r = bus_method_call_with_reply (
1646                         bus,
1647                         "org.freedesktop.systemd1",
1648                         "/org/freedesktop/systemd1",
1649                         "org.freedesktop.systemd1.Manager",
1650                         "GetUnit",
1651                         &reply,
1652                         &error,
1653                         DBUS_TYPE_STRING, &n,
1654                         DBUS_TYPE_INVALID);
1655         if (r < 0) {
1656                 dbus_error_free(&error);
1657
1658                 if (!quiet)
1659                         puts("unknown");
1660                 return 0;
1661         }
1662
1663         if (!dbus_message_get_args(reply, NULL,
1664                                    DBUS_TYPE_OBJECT_PATH, &path,
1665                                    DBUS_TYPE_INVALID)) {
1666                 log_error("Failed to parse reply.");
1667                 return -EIO;
1668         }
1669
1670         dbus_message_unref(reply);
1671         reply = NULL;
1672
1673         r = bus_method_call_with_reply(
1674                         bus,
1675                         "org.freedesktop.systemd1",
1676                         path,
1677                         "org.freedesktop.DBus.Properties",
1678                         "Get",
1679                         &reply,
1680                         NULL,
1681                         DBUS_TYPE_STRING, &interface,
1682                         DBUS_TYPE_STRING, &property,
1683                         DBUS_TYPE_INVALID);
1684         if (r < 0) {
1685                 if (!quiet)
1686                         puts("unknown");
1687                 return 0;
1688         }
1689
1690         if (!dbus_message_iter_init(reply, &iter) ||
1691             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT)  {
1692                 log_error("Failed to parse reply.");
1693                 return r;
1694         }
1695
1696         dbus_message_iter_recurse(&iter, &sub);
1697
1698         if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING)  {
1699                 log_error("Failed to parse reply.");
1700                 return r;
1701         }
1702
1703         dbus_message_iter_get_basic(&sub, &state);
1704
1705         if (!quiet)
1706                 puts(state);
1707
1708         return strv_find(check_states, state) ? 1 : 0;
1709 }
1710
1711 static void check_triggering_units(
1712                 DBusConnection *bus,
1713                 const char *unit_name) {
1714
1715         _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
1716         DBusMessageIter iter, sub;
1717         const char *interface = "org.freedesktop.systemd1.Unit",
1718                    *load_state_property = "LoadState",
1719                    *triggered_by_property = "TriggeredBy",
1720                    *state;
1721         _cleanup_free_ char *unit_path = NULL, *n = NULL;
1722         bool print_warning_label = true;
1723         int r;
1724
1725         n = unit_name_mangle(unit_name);
1726         if (!n) {
1727                 log_oom();
1728                 return;
1729         }
1730
1731         unit_path = unit_dbus_path_from_name(n);
1732         if (!unit_path) {
1733                 log_oom();
1734                 return;
1735         }
1736
1737         r = bus_method_call_with_reply(
1738                         bus,
1739                         "org.freedesktop.systemd1",
1740                         unit_path,
1741                         "org.freedesktop.DBus.Properties",
1742                         "Get",
1743                         &reply,
1744                         NULL,
1745                         DBUS_TYPE_STRING, &interface,
1746                         DBUS_TYPE_STRING, &load_state_property,
1747                         DBUS_TYPE_INVALID);
1748         if (r < 0)
1749                 return;
1750
1751         if (!dbus_message_iter_init(reply, &iter) ||
1752             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
1753                 log_error("Failed to parse reply.");
1754                 return;
1755         }
1756
1757         dbus_message_iter_recurse(&iter, &sub);
1758
1759         if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING)  {
1760             log_error("Failed to parse reply.");
1761             return;
1762         }
1763
1764         dbus_message_iter_get_basic(&sub, &state);
1765
1766         if (streq(state, "masked"))
1767             return;
1768
1769         dbus_message_unref(reply);
1770         reply = NULL;
1771
1772         r = bus_method_call_with_reply(
1773                         bus,
1774                         "org.freedesktop.systemd1",
1775                         unit_path,
1776                         "org.freedesktop.DBus.Properties",
1777                         "Get",
1778                         &reply,
1779                         NULL,
1780                         DBUS_TYPE_STRING, &interface,
1781                         DBUS_TYPE_STRING, &triggered_by_property,
1782                         DBUS_TYPE_INVALID);
1783         if (r < 0)
1784                 return;
1785
1786         if (!dbus_message_iter_init(reply, &iter) ||
1787             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
1788                 log_error("Failed to parse reply.");
1789                 return;
1790         }
1791
1792         dbus_message_iter_recurse(&iter, &sub);
1793         dbus_message_iter_recurse(&sub, &iter);
1794         sub = iter;
1795
1796         while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
1797                 const char * const check_states[] = {
1798                         "active",
1799                         "reloading",
1800                         NULL
1801                 };
1802                 const char *service_trigger;
1803
1804                 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
1805                         log_error("Failed to parse reply.");
1806                         return;
1807                 }
1808
1809                 dbus_message_iter_get_basic(&sub, &service_trigger);
1810
1811                 r = check_one_unit(bus, service_trigger, (char**) check_states, true);
1812                 if (r < 0)
1813                         return;
1814                 if (r > 0) {
1815                         if (print_warning_label) {
1816                                 log_warning("Warning: Stopping %s, but it can still be activated by:", unit_name);
1817                                 print_warning_label = false;
1818                         }
1819
1820                         log_warning("  %s", service_trigger);
1821                 }
1822
1823                 dbus_message_iter_next(&sub);
1824         }
1825 }
1826
1827 static int start_unit_one(
1828                 DBusConnection *bus,
1829                 const char *method,
1830                 const char *name,
1831                 const char *mode,
1832                 DBusError *error,
1833                 Set *s) {
1834
1835         _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
1836         _cleanup_free_ char *n;
1837         const char *path;
1838         int r;
1839
1840         assert(method);
1841         assert(name);
1842         assert(mode);
1843         assert(error);
1844
1845         n = unit_name_mangle(name);
1846         if (!n)
1847                 return log_oom();
1848
1849         r = bus_method_call_with_reply(
1850                         bus,
1851                         "org.freedesktop.systemd1",
1852                         "/org/freedesktop/systemd1",
1853                         "org.freedesktop.systemd1.Manager",
1854                         method,
1855                         &reply,
1856                         error,
1857                         DBUS_TYPE_STRING, &n,
1858                         DBUS_TYPE_STRING, &mode,
1859                         DBUS_TYPE_INVALID);
1860         if (r) {
1861                 if (r == -ENOENT && arg_action != ACTION_SYSTEMCTL)
1862                         /* There's always a fallback possible for
1863                          * legacy actions. */
1864                         r = -EADDRNOTAVAIL;
1865                 else
1866                         log_error("Failed to issue method call: %s", bus_error_message(error));
1867
1868                 return r;
1869         }
1870
1871         if (!dbus_message_get_args(reply, error,
1872                                    DBUS_TYPE_OBJECT_PATH, &path,
1873                                    DBUS_TYPE_INVALID)) {
1874                 log_error("Failed to parse reply: %s", bus_error_message(error));
1875                 return -EIO;
1876         }
1877
1878         if (need_daemon_reload(bus, n) > 0)
1879                 log_warning("Warning: Unit file of %s changed on disk, 'systemctl %sdaemon-reload' recommended.",
1880                             n, arg_scope == UNIT_FILE_SYSTEM ? "" : "--user ");
1881
1882         if (s) {
1883                 char *p;
1884
1885                 p = strdup(path);
1886                 if (!p)
1887                         return log_oom();
1888
1889                 r = set_consume(s, p);
1890                 if (r < 0) {
1891                         log_error("Failed to add path to set.");
1892                         return r;
1893                 }
1894         }
1895
1896         return 0;
1897 }
1898
1899 static const struct {
1900         const char *target;
1901         const char *verb;
1902         const char *mode;
1903 } action_table[_ACTION_MAX] = {
1904         [ACTION_HALT]         = { SPECIAL_HALT_TARGET,         "halt",         "replace-irreversibly" },
1905         [ACTION_POWEROFF]     = { SPECIAL_POWEROFF_TARGET,     "poweroff",     "replace-irreversibly" },
1906         [ACTION_REBOOT]       = { SPECIAL_REBOOT_TARGET,       "reboot",       "replace-irreversibly" },
1907         [ACTION_KEXEC]        = { SPECIAL_KEXEC_TARGET,        "kexec",        "replace-irreversibly" },
1908         [ACTION_RUNLEVEL2]    = { SPECIAL_RUNLEVEL2_TARGET,    NULL,           "isolate" },
1909         [ACTION_RUNLEVEL3]    = { SPECIAL_RUNLEVEL3_TARGET,    NULL,           "isolate" },
1910         [ACTION_RUNLEVEL4]    = { SPECIAL_RUNLEVEL4_TARGET,    NULL,           "isolate" },
1911         [ACTION_RUNLEVEL5]    = { SPECIAL_RUNLEVEL5_TARGET,    NULL,           "isolate" },
1912         [ACTION_RESCUE]       = { SPECIAL_RESCUE_TARGET,       "rescue",       "isolate" },
1913         [ACTION_EMERGENCY]    = { SPECIAL_EMERGENCY_TARGET,    "emergency",    "isolate" },
1914         [ACTION_DEFAULT]      = { SPECIAL_DEFAULT_TARGET,      "default",      "isolate" },
1915         [ACTION_EXIT]         = { SPECIAL_EXIT_TARGET,         "exit",         "replace-irreversibly" },
1916         [ACTION_SUSPEND]      = { SPECIAL_SUSPEND_TARGET,      "suspend",      "replace-irreversibly" },
1917         [ACTION_HIBERNATE]    = { SPECIAL_HIBERNATE_TARGET,    "hibernate",    "replace-irreversibly" },
1918         [ACTION_HYBRID_SLEEP] = { SPECIAL_HYBRID_SLEEP_TARGET, "hybrid-sleep", "replace-irreversibly" },
1919 };
1920
1921 static enum action verb_to_action(const char *verb) {
1922         enum action i;
1923
1924         for (i = ACTION_INVALID; i < _ACTION_MAX; i++)
1925                 if (action_table[i].verb && streq(verb, action_table[i].verb))
1926                         return i;
1927         return ACTION_INVALID;
1928 }
1929
1930 static int start_unit(DBusConnection *bus, char **args) {
1931
1932         int r, ret = 0;
1933         const char *method, *mode, *one_name;
1934         _cleanup_set_free_free_ Set *s = NULL;
1935         _cleanup_dbus_error_free_ DBusError error;
1936         char **name;
1937
1938         dbus_error_init(&error);
1939
1940         assert(bus);
1941
1942         ask_password_agent_open_if_enabled();
1943
1944         if (arg_action == ACTION_SYSTEMCTL) {
1945                 enum action action;
1946                 method =
1947                         streq(args[0], "stop") ||
1948                         streq(args[0], "condstop")              ? "StopUnit" :
1949                         streq(args[0], "reload")                ? "ReloadUnit" :
1950                         streq(args[0], "restart")               ? "RestartUnit" :
1951
1952                         streq(args[0], "try-restart")           ||
1953                         streq(args[0], "condrestart")           ? "TryRestartUnit" :
1954
1955                         streq(args[0], "reload-or-restart")     ? "ReloadOrRestartUnit" :
1956
1957                         streq(args[0], "reload-or-try-restart") ||
1958                         streq(args[0], "condreload") ||
1959
1960                         streq(args[0], "force-reload")          ? "ReloadOrTryRestartUnit" :
1961                                                                   "StartUnit";
1962                 action = verb_to_action(args[0]);
1963
1964                 mode = streq(args[0], "isolate") ? "isolate" :
1965                        action_table[action].mode ?: arg_job_mode;
1966
1967                 one_name = action_table[action].target;
1968
1969         } else {
1970                 assert(arg_action < ELEMENTSOF(action_table));
1971                 assert(action_table[arg_action].target);
1972
1973                 method = "StartUnit";
1974
1975                 mode = action_table[arg_action].mode;
1976                 one_name = action_table[arg_action].target;
1977         }
1978
1979         if (!arg_no_block) {
1980                 ret = enable_wait_for_jobs(bus);
1981                 if (ret < 0) {
1982                         log_error("Could not watch jobs: %s", strerror(-ret));
1983                         return ret;
1984                 }
1985
1986                 s = set_new(string_hash_func, string_compare_func);
1987                 if (!s)
1988                         return log_oom();
1989         }
1990
1991         if (one_name) {
1992                 ret = start_unit_one(bus, method, one_name, mode, &error, s);
1993                 if (ret < 0)
1994                         ret = translate_bus_error_to_exit_status(ret, &error);
1995         } else {
1996                 STRV_FOREACH(name, args+1) {
1997                         r = start_unit_one(bus, method, *name, mode, &error, s);
1998                         if (r < 0) {
1999                                 ret = translate_bus_error_to_exit_status(r, &error);
2000                                 dbus_error_free(&error);
2001                         }
2002                 }
2003         }
2004
2005         if (!arg_no_block) {
2006                 r = wait_for_jobs(bus, s);
2007                 if (r < 0)
2008                         return r;
2009
2010                 /* When stopping units, warn if they can still be triggered by
2011                  * another active unit (socket, path, timer) */
2012                 if (!arg_quiet && streq(method, "StopUnit")) {
2013                         if (one_name)
2014                                 check_triggering_units(bus, one_name);
2015                         else
2016                                 STRV_FOREACH(name, args+1)
2017                                         check_triggering_units(bus, *name);
2018                 }
2019         }
2020
2021         return ret;
2022 }
2023
2024 /* Ask systemd-logind, which might grant access to unprivileged users
2025  * through PolicyKit */
2026 static int reboot_with_logind(DBusConnection *bus, enum action a) {
2027 #ifdef HAVE_LOGIND
2028         const char *method;
2029         dbus_bool_t interactive = true;
2030
2031         if (!bus)
2032                 return -EIO;
2033
2034         polkit_agent_open_if_enabled();
2035
2036         switch (a) {
2037
2038         case ACTION_REBOOT:
2039                 method = "Reboot";
2040                 break;
2041
2042         case ACTION_POWEROFF:
2043                 method = "PowerOff";
2044                 break;
2045
2046         case ACTION_SUSPEND:
2047                 method = "Suspend";
2048                 break;
2049
2050         case ACTION_HIBERNATE:
2051                 method = "Hibernate";
2052                 break;
2053
2054         case ACTION_HYBRID_SLEEP:
2055                 method = "HybridSleep";
2056                 break;
2057
2058         default:
2059                 return -EINVAL;
2060         }
2061
2062         return bus_method_call_with_reply(
2063                         bus,
2064                         "org.freedesktop.login1",
2065                         "/org/freedesktop/login1",
2066                         "org.freedesktop.login1.Manager",
2067                         method,
2068                         NULL,
2069                         NULL,
2070                         DBUS_TYPE_BOOLEAN, &interactive,
2071                         DBUS_TYPE_INVALID);
2072 #else
2073         return -ENOSYS;
2074 #endif
2075 }
2076
2077 static int check_inhibitors(DBusConnection *bus, enum action a) {
2078 #ifdef HAVE_LOGIND
2079         _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
2080         DBusMessageIter iter, sub, sub2;
2081         int r;
2082         unsigned c = 0;
2083         _cleanup_strv_free_ char **sessions = NULL;
2084         char **s;
2085
2086         if (!bus)
2087                 return 0;
2088
2089         if (arg_ignore_inhibitors || arg_force > 0)
2090                 return 0;
2091
2092         if (arg_when > 0)
2093                 return 0;
2094
2095         if (geteuid() == 0)
2096                 return 0;
2097
2098         if (!on_tty())
2099                 return 0;
2100
2101         r = bus_method_call_with_reply(
2102                         bus,
2103                         "org.freedesktop.login1",
2104                         "/org/freedesktop/login1",
2105                         "org.freedesktop.login1.Manager",
2106                         "ListInhibitors",
2107                         &reply,
2108                         NULL,
2109                         DBUS_TYPE_INVALID);
2110         if (r < 0)
2111                 /* If logind is not around, then there are no inhibitors... */
2112                 return 0;
2113
2114         if (!dbus_message_iter_init(reply, &iter) ||
2115             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
2116             dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
2117                 log_error("Failed to parse reply.");
2118                 return -EIO;
2119         }
2120
2121         dbus_message_iter_recurse(&iter, &sub);
2122         while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
2123                 const char *what, *who, *why, *mode;
2124                 uint32_t uid, pid;
2125                 _cleanup_strv_free_ char **sv = NULL;
2126                 _cleanup_free_ char *comm = NULL, *user = NULL;
2127
2128                 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
2129                         log_error("Failed to parse reply.");
2130                         return -EIO;
2131                 }
2132
2133                 dbus_message_iter_recurse(&sub, &sub2);
2134
2135                 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &what, true) < 0 ||
2136                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &who, true) < 0 ||
2137                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &why, true) < 0 ||
2138                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &mode, true) < 0 ||
2139                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &uid, true) < 0 ||
2140                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &pid, false) < 0) {
2141                         log_error("Failed to parse reply.");
2142                         return -EIO;
2143                 }
2144
2145                 if (!streq(mode, "block"))
2146                         goto next;
2147
2148                 sv = strv_split(what, ":");
2149                 if (!sv)
2150                         return log_oom();
2151
2152                 if (!strv_contains(sv,
2153                                   a == ACTION_HALT ||
2154                                   a == ACTION_POWEROFF ||
2155                                   a == ACTION_REBOOT ||
2156                                   a == ACTION_KEXEC ? "shutdown" : "sleep"))
2157                         goto next;
2158
2159                 get_process_comm(pid, &comm);
2160                 user = uid_to_name(uid);
2161                 log_warning("Operation inhibited by \"%s\" (PID %lu \"%s\", user %s), reason is \"%s\".",
2162                             who, (unsigned long) pid, strna(comm), strna(user), why);
2163                 c++;
2164
2165         next:
2166                 dbus_message_iter_next(&sub);
2167         }
2168
2169         dbus_message_iter_recurse(&iter, &sub);
2170
2171         /* Check for current sessions */
2172         sd_get_sessions(&sessions);
2173         STRV_FOREACH(s, sessions) {
2174                 uid_t uid;
2175                 _cleanup_free_ char *type = NULL, *tty = NULL, *seat = NULL, *user = NULL, *service = NULL, *class = NULL;
2176
2177                 if (sd_session_get_uid(*s, &uid) < 0 || uid == getuid())
2178                         continue;
2179
2180                 if (sd_session_get_class(*s, &class) < 0 || !streq(class, "user"))
2181                         continue;
2182
2183                 if (sd_session_get_type(*s, &type) < 0 || (!streq(type, "x11") && !streq(type, "tty")))
2184                         continue;
2185
2186                 sd_session_get_tty(*s, &tty);
2187                 sd_session_get_seat(*s, &seat);
2188                 sd_session_get_service(*s, &service);
2189                 user = uid_to_name(uid);
2190
2191                 log_warning("User %s is logged in on %s.", strna(user), isempty(tty) ? (isempty(seat) ? strna(service) : seat) : tty);
2192                 c++;
2193         }
2194
2195         if (c <= 0)
2196                 return 0;
2197
2198         log_error("Please retry operation after closing inhibitors and logging out other users.\nAlternatively, ignore inhibitors and users with 'systemctl %s -i'.",
2199                   action_table[a].verb);
2200
2201         return -EPERM;
2202 #else
2203         return 0;
2204 #endif
2205 }
2206
2207 static int start_special(DBusConnection *bus, char **args) {
2208         enum action a;
2209         int r;
2210
2211         assert(args);
2212
2213         a = verb_to_action(args[0]);
2214
2215         r = check_inhibitors(bus, a);
2216         if (r < 0)
2217                 return r;
2218
2219         if (arg_force >= 2 && geteuid() != 0) {
2220                 log_error("Must be root.");
2221                 return -EPERM;
2222         }
2223
2224         if (arg_force >= 2 &&
2225             (a == ACTION_HALT ||
2226              a == ACTION_POWEROFF ||
2227              a == ACTION_REBOOT))
2228                 halt_now(a);
2229
2230         if (arg_force >= 1 &&
2231             (a == ACTION_HALT ||
2232              a == ACTION_POWEROFF ||
2233              a == ACTION_REBOOT ||
2234              a == ACTION_KEXEC ||
2235              a == ACTION_EXIT))
2236                 return daemon_reload(bus, args);
2237
2238         /* first try logind, to allow authentication with polkit */
2239         if (geteuid() != 0 &&
2240             (a == ACTION_POWEROFF ||
2241              a == ACTION_REBOOT ||
2242              a == ACTION_SUSPEND ||
2243              a == ACTION_HIBERNATE ||
2244              a == ACTION_HYBRID_SLEEP)) {
2245                 r = reboot_with_logind(bus, a);
2246                 if (r >= 0)
2247                         return r;
2248         }
2249
2250         r = start_unit(bus, args);
2251         if (r == EXIT_SUCCESS)
2252                 warn_wall(a);
2253
2254         return r;
2255 }
2256
2257 static int check_unit_active(DBusConnection *bus, char **args) {
2258         const char * const check_states[] = {
2259                 "active",
2260                 "reloading",
2261                 NULL
2262         };
2263
2264         char **name;
2265         int r = 3; /* According to LSB: "program is not running" */
2266
2267         assert(bus);
2268         assert(args);
2269
2270         STRV_FOREACH(name, args+1) {
2271                 int state;
2272
2273                 state = check_one_unit(bus, *name, (char**) check_states, arg_quiet);
2274                 if (state < 0)
2275                         return state;
2276                 if (state > 0)
2277                         r = 0;
2278         }
2279
2280         return r;
2281 }
2282
2283 static int check_unit_failed(DBusConnection *bus, char **args) {
2284         const char * const check_states[] = {
2285                 "failed",
2286                 NULL
2287         };
2288
2289         char **name;
2290         int r = 1;
2291
2292         assert(bus);
2293         assert(args);
2294
2295         STRV_FOREACH(name, args+1) {
2296                 int state;
2297
2298                 state = check_one_unit(bus, *name, (char**) check_states, arg_quiet);
2299                 if (state < 0)
2300                         return state;
2301                 if (state > 0)
2302                         r = 0;
2303         }
2304
2305         return r;
2306 }
2307
2308 static int kill_unit(DBusConnection *bus, char **args) {
2309         char **name;
2310         int r = 0;
2311
2312         assert(bus);
2313         assert(args);
2314
2315         if (!arg_kill_who)
2316                 arg_kill_who = "all";
2317
2318         STRV_FOREACH(name, args+1) {
2319                 _cleanup_free_ char *n = NULL;
2320
2321                 n = unit_name_mangle(*name);
2322                 if (!n)
2323                         return log_oom();
2324
2325                 r = bus_method_call_with_reply(
2326                                 bus,
2327                                 "org.freedesktop.systemd1",
2328                                 "/org/freedesktop/systemd1",
2329                                 "org.freedesktop.systemd1.Manager",
2330                                 "KillUnit",
2331                                 NULL,
2332                                 NULL,
2333                                 DBUS_TYPE_STRING, &n,
2334                                 DBUS_TYPE_STRING, &arg_kill_who,
2335                                 DBUS_TYPE_INT32, &arg_signal,
2336                                 DBUS_TYPE_INVALID);
2337                 if (r < 0)
2338                         return r;
2339         }
2340         return 0;
2341 }
2342
2343 typedef struct ExecStatusInfo {
2344         char *name;
2345
2346         char *path;
2347         char **argv;
2348
2349         bool ignore;
2350
2351         usec_t start_timestamp;
2352         usec_t exit_timestamp;
2353         pid_t pid;
2354         int code;
2355         int status;
2356
2357         LIST_FIELDS(struct ExecStatusInfo, exec);
2358 } ExecStatusInfo;
2359
2360 static void exec_status_info_free(ExecStatusInfo *i) {
2361         assert(i);
2362
2363         free(i->name);
2364         free(i->path);
2365         strv_free(i->argv);
2366         free(i);
2367 }
2368
2369 static int exec_status_info_deserialize(DBusMessageIter *sub, ExecStatusInfo *i) {
2370         uint64_t start_timestamp, exit_timestamp, start_timestamp_monotonic, exit_timestamp_monotonic;
2371         DBusMessageIter sub2, sub3;
2372         const char*path;
2373         unsigned n;
2374         uint32_t pid;
2375         int32_t code, status;
2376         dbus_bool_t ignore;
2377
2378         assert(i);
2379         assert(i);
2380
2381         if (dbus_message_iter_get_arg_type(sub) != DBUS_TYPE_STRUCT)
2382                 return -EIO;
2383
2384         dbus_message_iter_recurse(sub, &sub2);
2385
2386         if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, true) < 0)
2387                 return -EIO;
2388
2389         i->path = strdup(path);
2390         if (!i->path)
2391                 return -ENOMEM;
2392
2393         if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_ARRAY ||
2394             dbus_message_iter_get_element_type(&sub2) != DBUS_TYPE_STRING)
2395                 return -EIO;
2396
2397         n = 0;
2398         dbus_message_iter_recurse(&sub2, &sub3);
2399         while (dbus_message_iter_get_arg_type(&sub3) != DBUS_TYPE_INVALID) {
2400                 assert(dbus_message_iter_get_arg_type(&sub3) == DBUS_TYPE_STRING);
2401                 dbus_message_iter_next(&sub3);
2402                 n++;
2403         }
2404
2405         i->argv = new0(char*, n+1);
2406         if (!i->argv)
2407                 return -ENOMEM;
2408
2409         n = 0;
2410         dbus_message_iter_recurse(&sub2, &sub3);
2411         while (dbus_message_iter_get_arg_type(&sub3) != DBUS_TYPE_INVALID) {
2412                 const char *s;
2413
2414                 assert(dbus_message_iter_get_arg_type(&sub3) == DBUS_TYPE_STRING);
2415                 dbus_message_iter_get_basic(&sub3, &s);
2416                 dbus_message_iter_next(&sub3);
2417
2418                 i->argv[n] = strdup(s);
2419                 if (!i->argv[n])
2420                         return -ENOMEM;
2421
2422                 n++;
2423         }
2424
2425         if (!dbus_message_iter_next(&sub2) ||
2426             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_BOOLEAN, &ignore, true) < 0 ||
2427             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &start_timestamp, true) < 0 ||
2428             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &start_timestamp_monotonic, true) < 0 ||
2429             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &exit_timestamp, true) < 0 ||
2430             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &exit_timestamp_monotonic, true) < 0 ||
2431             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &pid, true) < 0 ||
2432             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_INT32, &code, true) < 0 ||
2433             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_INT32, &status, false) < 0)
2434                 return -EIO;
2435
2436         i->ignore = ignore;
2437         i->start_timestamp = (usec_t) start_timestamp;
2438         i->exit_timestamp = (usec_t) exit_timestamp;
2439         i->pid = (pid_t) pid;
2440         i->code = code;
2441         i->status = status;
2442
2443         return 0;
2444 }
2445
2446 typedef struct UnitStatusInfo {
2447         const char *id;
2448         const char *load_state;
2449         const char *active_state;
2450         const char *sub_state;
2451         const char *unit_file_state;
2452
2453         const char *description;
2454         const char *following;
2455
2456         char **documentation;
2457
2458         const char *fragment_path;
2459         const char *source_path;
2460         const char *control_group;
2461
2462         char **dropin_paths;
2463
2464         const char *load_error;
2465         const char *result;
2466
2467         usec_t inactive_exit_timestamp;
2468         usec_t inactive_exit_timestamp_monotonic;
2469         usec_t active_enter_timestamp;
2470         usec_t active_exit_timestamp;
2471         usec_t inactive_enter_timestamp;
2472
2473         bool need_daemon_reload;
2474
2475         /* Service */
2476         pid_t main_pid;
2477         pid_t control_pid;
2478         const char *status_text;
2479         const char *pid_file;
2480         bool running:1;
2481
2482         usec_t start_timestamp;
2483         usec_t exit_timestamp;
2484
2485         int exit_code, exit_status;
2486
2487         usec_t condition_timestamp;
2488         bool condition_result;
2489         bool failed_condition_trigger;
2490         bool failed_condition_negate;
2491         const char *failed_condition;
2492         const char *failed_condition_param;
2493
2494         /* Socket */
2495         unsigned n_accepted;
2496         unsigned n_connections;
2497         bool accept;
2498
2499         /* Pairs of type, path */
2500         char **listen;
2501
2502         /* Device */
2503         const char *sysfs_path;
2504
2505         /* Mount, Automount */
2506         const char *where;
2507
2508         /* Swap */
2509         const char *what;
2510
2511         LIST_HEAD(ExecStatusInfo, exec);
2512 } UnitStatusInfo;
2513
2514 static void print_status_info(UnitStatusInfo *i,
2515                               bool *ellipsized) {
2516         ExecStatusInfo *p;
2517         const char *on, *off, *ss;
2518         usec_t timestamp;
2519         char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], *s1;
2520         char since2[FORMAT_TIMESTAMP_MAX], *s2;
2521         const char *path;
2522         int flags =
2523                 arg_all * OUTPUT_SHOW_ALL |
2524                 (!on_tty() || pager_have()) * OUTPUT_FULL_WIDTH |
2525                 on_tty() * OUTPUT_COLOR |
2526                 !arg_quiet * OUTPUT_WARN_CUTOFF |
2527                 arg_full * OUTPUT_FULL_WIDTH;
2528         char **t, **t2;
2529
2530         assert(i);
2531
2532         /* This shows pretty information about a unit. See
2533          * print_property() for a low-level property printer */
2534
2535         printf("%s", strna(i->id));
2536
2537         if (i->description && !streq_ptr(i->id, i->description))
2538                 printf(" - %s", i->description);
2539
2540         printf("\n");
2541
2542         if (i->following)
2543                 printf("   Follow: unit currently follows state of %s\n", i->following);
2544
2545         if (streq_ptr(i->load_state, "error")) {
2546                 on = ansi_highlight_red();
2547                 off = ansi_highlight_off();
2548         } else
2549                 on = off = "";
2550
2551         path = i->source_path ? i->source_path : i->fragment_path;
2552
2553         if (i->load_error)
2554                 printf("   Loaded: %s%s%s (Reason: %s)\n",
2555                        on, strna(i->load_state), off, i->load_error);
2556         else if (path && i->unit_file_state)
2557                 printf("   Loaded: %s%s%s (%s; %s)\n",
2558                        on, strna(i->load_state), off, path, i->unit_file_state);
2559         else if (path)
2560                 printf("   Loaded: %s%s%s (%s)\n",
2561                        on, strna(i->load_state), off, path);
2562         else
2563                 printf("   Loaded: %s%s%s\n",
2564                        on, strna(i->load_state), off);
2565
2566         if (!strv_isempty(i->dropin_paths)) {
2567                 char ** dropin;
2568                 char * dir = NULL;
2569                 bool last = false;
2570
2571                 STRV_FOREACH(dropin, i->dropin_paths) {
2572                         if (! dir || last) {
2573                                 printf(dir ? "        " : "  Drop-In: ");
2574
2575                                 free(dir);
2576
2577                                 if (path_get_parent(*dropin, &dir) < 0) {
2578                                         log_oom();
2579                                         return;
2580                                 }
2581
2582                                 printf("%s\n           %s", dir,
2583                                        draw_special_char(DRAW_TREE_RIGHT));
2584                         }
2585
2586                         last = ! (*(dropin + 1) && startswith(*(dropin + 1), dir));
2587
2588                         printf("%s%s", path_get_file_name(*dropin), last ? "\n" : ", ");
2589                 }
2590
2591                 free(dir);
2592         }
2593
2594         ss = streq_ptr(i->active_state, i->sub_state) ? NULL : i->sub_state;
2595
2596         if (streq_ptr(i->active_state, "failed")) {
2597                 on = ansi_highlight_red();
2598                 off = ansi_highlight_off();
2599         } else if (streq_ptr(i->active_state, "active") || streq_ptr(i->active_state, "reloading")) {
2600                 on = ansi_highlight_green();
2601                 off = ansi_highlight_off();
2602         } else
2603                 on = off = "";
2604
2605         if (ss)
2606                 printf("   Active: %s%s (%s)%s",
2607                        on, strna(i->active_state), ss, off);
2608         else
2609                 printf("   Active: %s%s%s",
2610                        on, strna(i->active_state), off);
2611
2612         if (!isempty(i->result) && !streq(i->result, "success"))
2613                 printf(" (Result: %s)", i->result);
2614
2615         timestamp = (streq_ptr(i->active_state, "active")      ||
2616                      streq_ptr(i->active_state, "reloading"))   ? i->active_enter_timestamp :
2617                     (streq_ptr(i->active_state, "inactive")    ||
2618                      streq_ptr(i->active_state, "failed"))      ? i->inactive_enter_timestamp :
2619                     streq_ptr(i->active_state, "activating")    ? i->inactive_exit_timestamp :
2620                                                                   i->active_exit_timestamp;
2621
2622         s1 = format_timestamp_relative(since1, sizeof(since1), timestamp);
2623         s2 = format_timestamp(since2, sizeof(since2), timestamp);
2624
2625         if (s1)
2626                 printf(" since %s; %s\n", s2, s1);
2627         else if (s2)
2628                 printf(" since %s\n", s2);
2629         else
2630                 printf("\n");
2631
2632         if (!i->condition_result && i->condition_timestamp > 0) {
2633                 s1 = format_timestamp_relative(since1, sizeof(since1), i->condition_timestamp);
2634                 s2 = format_timestamp(since2, sizeof(since2), i->condition_timestamp);
2635
2636                 printf("           start condition failed at %s%s%s\n",
2637                        s2, s1 ? "; " : "", s1 ? s1 : "");
2638                 if (i->failed_condition_trigger)
2639                         printf("           none of the trigger conditions were met\n");
2640                 else if (i->failed_condition)
2641                         printf("           %s=%s%s was not met\n",
2642                                i->failed_condition,
2643                                i->failed_condition_negate ? "!" : "",
2644                                i->failed_condition_param);
2645         }
2646
2647         if (i->sysfs_path)
2648                 printf("   Device: %s\n", i->sysfs_path);
2649         if (i->where)
2650                 printf("    Where: %s\n", i->where);
2651         if (i->what)
2652                 printf("     What: %s\n", i->what);
2653
2654         STRV_FOREACH(t, i->documentation)
2655                 printf(" %*s %s\n", 9, t == i->documentation ? "Docs:" : "", *t);
2656
2657         STRV_FOREACH_PAIR(t, t2, i->listen)
2658                 printf(" %*s %s (%s)\n", 9, t == i->listen ? "Listen:" : "", *t2, *t);
2659
2660         if (i->accept)
2661                 printf(" Accepted: %u; Connected: %u\n", i->n_accepted, i->n_connections);
2662
2663         LIST_FOREACH(exec, p, i->exec) {
2664                 _cleanup_free_ char *argv = NULL;
2665                 bool good;
2666
2667                 /* Only show exited processes here */
2668                 if (p->code == 0)
2669                         continue;
2670
2671                 argv = strv_join(p->argv, " ");
2672                 printf("  Process: %u %s=%s ", p->pid, p->name, strna(argv));
2673
2674                 good = is_clean_exit_lsb(p->code, p->status, NULL);
2675                 if (!good) {
2676                         on = ansi_highlight_red();
2677                         off = ansi_highlight_off();
2678                 } else
2679                         on = off = "";
2680
2681                 printf("%s(code=%s, ", on, sigchld_code_to_string(p->code));
2682
2683                 if (p->code == CLD_EXITED) {
2684                         const char *c;
2685
2686                         printf("status=%i", p->status);
2687
2688                         c = exit_status_to_string(p->status, EXIT_STATUS_SYSTEMD);
2689                         if (c)
2690                                 printf("/%s", c);
2691
2692                 } else
2693                         printf("signal=%s", signal_to_string(p->status));
2694
2695                 printf(")%s\n", off);
2696
2697                 if (i->main_pid == p->pid &&
2698                     i->start_timestamp == p->start_timestamp &&
2699                     i->exit_timestamp == p->start_timestamp)
2700                         /* Let's not show this twice */
2701                         i->main_pid = 0;
2702
2703                 if (p->pid == i->control_pid)
2704                         i->control_pid = 0;
2705         }
2706
2707         if (i->main_pid > 0 || i->control_pid > 0) {
2708                 if (i->main_pid > 0) {
2709                         printf(" Main PID: %u", (unsigned) i->main_pid);
2710
2711                         if (i->running) {
2712                                 _cleanup_free_ char *comm = NULL;
2713                                 get_process_comm(i->main_pid, &comm);
2714                                 if (comm)
2715                                         printf(" (%s)", comm);
2716                         } else if (i->exit_code > 0) {
2717                                 printf(" (code=%s, ", sigchld_code_to_string(i->exit_code));
2718
2719                                 if (i->exit_code == CLD_EXITED) {
2720                                         const char *c;
2721
2722                                         printf("status=%i", i->exit_status);
2723
2724                                         c = exit_status_to_string(i->exit_status, EXIT_STATUS_SYSTEMD);
2725                                         if (c)
2726                                                 printf("/%s", c);
2727
2728                                 } else
2729                                         printf("signal=%s", signal_to_string(i->exit_status));
2730                                 printf(")");
2731                         }
2732
2733                         if (i->control_pid > 0)
2734                                 printf(";");
2735                 }
2736
2737                 if (i->control_pid > 0) {
2738                         _cleanup_free_ char *c = NULL;
2739
2740                         printf(" %8s: %u", i->main_pid ? "" : " Control", (unsigned) i->control_pid);
2741
2742                         get_process_comm(i->control_pid, &c);
2743                         if (c)
2744                                 printf(" (%s)", c);
2745                 }
2746
2747                 printf("\n");
2748         }
2749
2750         if (i->status_text)
2751                 printf("   Status: \"%s\"\n", i->status_text);
2752
2753         if (i->control_group &&
2754             (i->main_pid > 0 || i->control_pid > 0 || cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, i->control_group, false) == 0)) {
2755                 unsigned c;
2756
2757                 printf("   CGroup: %s\n", i->control_group);
2758
2759                 if (arg_transport != TRANSPORT_SSH) {
2760                         unsigned k = 0;
2761                         pid_t extra[2];
2762                         char prefix[] = "           ";
2763
2764                         c = columns();
2765                         if (c > sizeof(prefix) - 1)
2766                                 c -= sizeof(prefix) - 1;
2767                         else
2768                                 c = 0;
2769
2770                         if (i->main_pid > 0)
2771                                 extra[k++] = i->main_pid;
2772
2773                         if (i->control_pid > 0)
2774                                 extra[k++] = i->control_pid;
2775
2776                         show_cgroup_and_extra(SYSTEMD_CGROUP_CONTROLLER, i->control_group, prefix,
2777                                                       c, false, extra, k, flags);
2778                 }
2779         }
2780
2781         if (i->id && arg_transport != TRANSPORT_SSH) {
2782                 printf("\n");
2783                 show_journal_by_unit(stdout,
2784                                      i->id,
2785                                      arg_output,
2786                                      0,
2787                                      i->inactive_exit_timestamp_monotonic,
2788                                      arg_lines,
2789                                      getuid(),
2790                                      flags,
2791                                      arg_scope == UNIT_FILE_SYSTEM,
2792                                      ellipsized);
2793         }
2794
2795         if (i->need_daemon_reload)
2796                 printf("\n%sWarning:%s Unit file changed on disk, 'systemctl %sdaemon-reload' recommended.\n",
2797                        ansi_highlight_red(),
2798                        ansi_highlight_off(),
2799                        arg_scope == UNIT_FILE_SYSTEM ? "" : "--user ");
2800 }
2801
2802 static void show_unit_help(UnitStatusInfo *i) {
2803         char **p;
2804
2805         assert(i);
2806
2807         if (!i->documentation) {
2808                 log_info("Documentation for %s not known.", i->id);
2809                 return;
2810         }
2811
2812         STRV_FOREACH(p, i->documentation) {
2813
2814                 if (startswith(*p, "man:")) {
2815                         size_t k;
2816                         char *e = NULL;
2817                         _cleanup_free_ char *page = NULL, *section = NULL;
2818                         const char *args[4] = { "man", NULL, NULL, NULL };
2819                         pid_t pid;
2820
2821                         k = strlen(*p);
2822
2823                         if ((*p)[k-1] == ')')
2824                                 e = strrchr(*p, '(');
2825
2826                         if (e) {
2827                                 page = strndup((*p) + 4, e - *p - 4);
2828                                 section = strndup(e + 1, *p + k - e - 2);
2829                                 if (!page || !section) {
2830                                         log_oom();
2831                                         return;
2832                                 }
2833
2834                                 args[1] = section;
2835                                 args[2] = page;
2836                         } else
2837                                 args[1] = *p + 4;
2838
2839                         pid = fork();
2840                         if (pid < 0) {
2841                                 log_error("Failed to fork: %m");
2842                                 continue;
2843                         }
2844
2845                         if (pid == 0) {
2846                                 /* Child */
2847                                 execvp(args[0], (char**) args);
2848                                 log_error("Failed to execute man: %m");
2849                                 _exit(EXIT_FAILURE);
2850                         }
2851
2852                         wait_for_terminate(pid, NULL);
2853                 } else
2854                         log_info("Can't show: %s", *p);
2855         }
2856 }
2857
2858 static int status_property(const char *name, DBusMessageIter *iter, UnitStatusInfo *i) {
2859
2860         assert(name);
2861         assert(iter);
2862         assert(i);
2863
2864         switch (dbus_message_iter_get_arg_type(iter)) {
2865
2866         case DBUS_TYPE_STRING: {
2867                 const char *s;
2868
2869                 dbus_message_iter_get_basic(iter, &s);
2870
2871                 if (!isempty(s)) {
2872                         if (streq(name, "Id"))
2873                                 i->id = s;
2874                         else if (streq(name, "LoadState"))
2875                                 i->load_state = s;
2876                         else if (streq(name, "ActiveState"))
2877                                 i->active_state = s;
2878                         else if (streq(name, "SubState"))
2879                                 i->sub_state = s;
2880                         else if (streq(name, "Description"))
2881                                 i->description = s;
2882                         else if (streq(name, "FragmentPath"))
2883                                 i->fragment_path = s;
2884                         else if (streq(name, "SourcePath"))
2885                                 i->source_path = s;
2886 #ifndef NOLEGACY
2887                         else if (streq(name, "DefaultControlGroup")) {
2888                                 const char *e;
2889                                 e = startswith(s, SYSTEMD_CGROUP_CONTROLLER ":");
2890                                 if (e)
2891                                         i->control_group = e;
2892                         }
2893 #endif
2894                         else if (streq(name, "ControlGroup"))
2895                                 i->control_group = s;
2896                         else if (streq(name, "StatusText"))
2897                                 i->status_text = s;
2898                         else if (streq(name, "PIDFile"))
2899                                 i->pid_file = s;
2900                         else if (streq(name, "SysFSPath"))
2901                                 i->sysfs_path = s;
2902                         else if (streq(name, "Where"))
2903                                 i->where = s;
2904                         else if (streq(name, "What"))
2905                                 i->what = s;
2906                         else if (streq(name, "Following"))
2907                                 i->following = s;
2908                         else if (streq(name, "UnitFileState"))
2909                                 i->unit_file_state = s;
2910                         else if (streq(name, "Result"))
2911                                 i->result = s;
2912                 }
2913
2914                 break;
2915         }
2916
2917         case DBUS_TYPE_BOOLEAN: {
2918                 dbus_bool_t b;
2919
2920                 dbus_message_iter_get_basic(iter, &b);
2921
2922                 if (streq(name, "Accept"))
2923                         i->accept = b;
2924                 else if (streq(name, "NeedDaemonReload"))
2925                         i->need_daemon_reload = b;
2926                 else if (streq(name, "ConditionResult"))
2927                         i->condition_result = b;
2928
2929                 break;
2930         }
2931
2932         case DBUS_TYPE_UINT32: {
2933                 uint32_t u;
2934
2935                 dbus_message_iter_get_basic(iter, &u);
2936
2937                 if (streq(name, "MainPID")) {
2938                         if (u > 0) {
2939                                 i->main_pid = (pid_t) u;
2940                                 i->running = true;
2941                         }
2942                 } else if (streq(name, "ControlPID"))
2943                         i->control_pid = (pid_t) u;
2944                 else if (streq(name, "ExecMainPID")) {
2945                         if (u > 0)
2946                                 i->main_pid = (pid_t) u;
2947                 } else if (streq(name, "NAccepted"))
2948                         i->n_accepted = u;
2949                 else if (streq(name, "NConnections"))
2950                         i->n_connections = u;
2951
2952                 break;
2953         }
2954
2955         case DBUS_TYPE_INT32: {
2956                 int32_t j;
2957
2958                 dbus_message_iter_get_basic(iter, &j);
2959
2960                 if (streq(name, "ExecMainCode"))
2961                         i->exit_code = (int) j;
2962                 else if (streq(name, "ExecMainStatus"))
2963                         i->exit_status = (int) j;
2964
2965                 break;
2966         }
2967
2968         case DBUS_TYPE_UINT64: {
2969                 uint64_t u;
2970
2971                 dbus_message_iter_get_basic(iter, &u);
2972
2973                 if (streq(name, "ExecMainStartTimestamp"))
2974                         i->start_timestamp = (usec_t) u;
2975                 else if (streq(name, "ExecMainExitTimestamp"))
2976                         i->exit_timestamp = (usec_t) u;
2977                 else if (streq(name, "ActiveEnterTimestamp"))
2978                         i->active_enter_timestamp = (usec_t) u;
2979                 else if (streq(name, "InactiveEnterTimestamp"))
2980                         i->inactive_enter_timestamp = (usec_t) u;
2981                 else if (streq(name, "InactiveExitTimestamp"))
2982                         i->inactive_exit_timestamp = (usec_t) u;
2983                 else if (streq(name, "InactiveExitTimestampMonotonic"))
2984                         i->inactive_exit_timestamp_monotonic = (usec_t) u;
2985                 else if (streq(name, "ActiveExitTimestamp"))
2986                         i->active_exit_timestamp = (usec_t) u;
2987                 else if (streq(name, "ConditionTimestamp"))
2988                         i->condition_timestamp = (usec_t) u;
2989
2990                 break;
2991         }
2992
2993         case DBUS_TYPE_ARRAY: {
2994
2995                 if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT &&
2996                     startswith(name, "Exec")) {
2997                         DBusMessageIter sub;
2998
2999                         dbus_message_iter_recurse(iter, &sub);
3000                         while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
3001                                 ExecStatusInfo *info;
3002                                 int r;
3003
3004                                 info = new0(ExecStatusInfo, 1);
3005                                 if (!info)
3006                                         return -ENOMEM;
3007
3008                                 info->name = strdup(name);
3009                                 if (!info->name) {
3010                                         free(info);
3011                                         return -ENOMEM;
3012                                 }
3013
3014                                 r = exec_status_info_deserialize(&sub, info);
3015                                 if (r < 0) {
3016                                         free(info);
3017                                         return r;
3018                                 }
3019
3020                                 LIST_PREPEND(ExecStatusInfo, exec, i->exec, info);
3021
3022                                 dbus_message_iter_next(&sub);
3023                         }
3024
3025                 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT &&
3026                            streq(name, "Listen")) {
3027                         DBusMessageIter sub, sub2;
3028
3029                         dbus_message_iter_recurse(iter, &sub);
3030                         while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
3031                                 const char *type, *path;
3032
3033                                 dbus_message_iter_recurse(&sub, &sub2);
3034
3035                                 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) >= 0 &&
3036                                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, false) >= 0) {
3037                                         int r;
3038
3039                                         r = strv_extend(&i->listen, type);
3040                                         if (r < 0)
3041                                                 return r;
3042                                         r = strv_extend(&i->listen, path);
3043                                         if (r < 0)
3044                                                 return r;
3045                                 }
3046
3047                                 dbus_message_iter_next(&sub);
3048                         }
3049
3050                         return 0;
3051
3052                 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRING &&
3053                            streq(name, "DropInPaths")) {
3054                         int r = bus_parse_strv_iter(iter, &i->dropin_paths);
3055                         if (r < 0)
3056                                 return r;
3057
3058                 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRING &&
3059                            streq(name, "Documentation")) {
3060
3061                         DBusMessageIter sub;
3062
3063                         dbus_message_iter_recurse(iter, &sub);
3064                         while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING) {
3065                                 const char *s;
3066                                 int r;
3067
3068                                 dbus_message_iter_get_basic(&sub, &s);
3069
3070                                 r = strv_extend(&i->documentation, s);
3071                                 if (r < 0)
3072