chiark / gitweb /
systemcl: add support for setting BlockIORead/WriteBandwidth for unit
[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;
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                         free(set_remove(d->set, (char*) path));
1507
1508                         if (!isempty(result))
1509                                 d->result = strdup(result);
1510
1511                         if (!isempty(unit))
1512                                 d->name = strdup(unit);
1513
1514                         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1515                 }
1516 #ifndef NOLEGACY
1517                 dbus_error_free(&error);
1518                 if (dbus_message_get_args(message, &error,
1519                                           DBUS_TYPE_UINT32, &id,
1520                                           DBUS_TYPE_OBJECT_PATH, &path,
1521                                           DBUS_TYPE_STRING, &result,
1522                                           DBUS_TYPE_INVALID)) {
1523                         /* Compatibility with older systemd versions <
1524                          * 183 during upgrades. This should be dropped
1525                          * one day. */
1526                         free(set_remove(d->set, (char*) path));
1527
1528                         if (*result)
1529                                 d->result = strdup(result);
1530
1531                         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1532                 }
1533 #endif
1534
1535                 log_error("Failed to parse message: %s", bus_error_message(&error));
1536         }
1537
1538         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1539 }
1540
1541 static int enable_wait_for_jobs(DBusConnection *bus) {
1542         DBusError error;
1543
1544         assert(bus);
1545
1546         if (private_bus)
1547                 return 0;
1548
1549         dbus_error_init(&error);
1550         dbus_bus_add_match(bus,
1551                            "type='signal',"
1552                            "sender='org.freedesktop.systemd1',"
1553                            "interface='org.freedesktop.systemd1.Manager',"
1554                            "member='JobRemoved',"
1555                            "path='/org/freedesktop/systemd1'",
1556                            &error);
1557
1558         if (dbus_error_is_set(&error)) {
1559                 log_error("Failed to add match: %s", bus_error_message(&error));
1560                 dbus_error_free(&error);
1561                 return -EIO;
1562         }
1563
1564         /* This is slightly dirty, since we don't undo the match registrations. */
1565         return 0;
1566 }
1567
1568 static int wait_for_jobs(DBusConnection *bus, Set *s) {
1569         int r = 0;
1570         WaitData d = { .set = s };
1571
1572         assert(bus);
1573         assert(s);
1574
1575         if (!dbus_connection_add_filter(bus, wait_filter, &d, NULL))
1576                 return log_oom();
1577
1578         while (!set_isempty(s)) {
1579
1580                 if (!dbus_connection_read_write_dispatch(bus, -1)) {
1581                         log_error("Disconnected from bus.");
1582                         return -ECONNREFUSED;
1583                 }
1584
1585                 if (!d.result)
1586                         goto free_name;
1587
1588                 if (!arg_quiet) {
1589                         if (streq(d.result, "timeout"))
1590                                 log_error("Job for %s timed out.", strna(d.name));
1591                         else if (streq(d.result, "canceled"))
1592                                 log_error("Job for %s canceled.", strna(d.name));
1593                         else if (streq(d.result, "dependency"))
1594                                 log_error("A dependency job for %s failed. See 'journalctl -xn' for details.", strna(d.name));
1595                         else if (!streq(d.result, "done") && !streq(d.result, "skipped"))
1596                                 log_error("Job for %s failed. See 'systemctl status %s' and 'journalctl -xn' for details.", strna(d.name), strna(d.name));
1597                 }
1598
1599                 if (streq_ptr(d.result, "timeout"))
1600                         r = -ETIME;
1601                 else if (streq_ptr(d.result, "canceled"))
1602                         r = -ECANCELED;
1603                 else if (!streq_ptr(d.result, "done") && !streq_ptr(d.result, "skipped"))
1604                         r = -EIO;
1605
1606                 free(d.result);
1607                 d.result = NULL;
1608
1609         free_name:
1610                 free(d.name);
1611                 d.name = NULL;
1612         }
1613
1614         dbus_connection_remove_filter(bus, wait_filter, &d);
1615         return r;
1616 }
1617
1618 static int check_one_unit(DBusConnection *bus, const char *name, char **check_states, bool quiet) {
1619         _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
1620         _cleanup_free_ char *n = NULL;
1621         DBusMessageIter iter, sub;
1622         const char
1623                 *interface = "org.freedesktop.systemd1.Unit",
1624                 *property = "ActiveState";
1625         const char *state, *path;
1626         DBusError error;
1627         int r;
1628
1629         assert(name);
1630
1631         dbus_error_init(&error);
1632
1633         n = unit_name_mangle(name);
1634         if (!n)
1635                 return log_oom();
1636
1637         r = bus_method_call_with_reply (
1638                         bus,
1639                         "org.freedesktop.systemd1",
1640                         "/org/freedesktop/systemd1",
1641                         "org.freedesktop.systemd1.Manager",
1642                         "GetUnit",
1643                         &reply,
1644                         &error,
1645                         DBUS_TYPE_STRING, &n,
1646                         DBUS_TYPE_INVALID);
1647         if (r < 0) {
1648                 dbus_error_free(&error);
1649
1650                 if (!quiet)
1651                         puts("unknown");
1652                 return 0;
1653         }
1654
1655         if (!dbus_message_get_args(reply, NULL,
1656                                    DBUS_TYPE_OBJECT_PATH, &path,
1657                                    DBUS_TYPE_INVALID)) {
1658                 log_error("Failed to parse reply.");
1659                 return -EIO;
1660         }
1661
1662         dbus_message_unref(reply);
1663         reply = NULL;
1664
1665         r = bus_method_call_with_reply(
1666                         bus,
1667                         "org.freedesktop.systemd1",
1668                         path,
1669                         "org.freedesktop.DBus.Properties",
1670                         "Get",
1671                         &reply,
1672                         NULL,
1673                         DBUS_TYPE_STRING, &interface,
1674                         DBUS_TYPE_STRING, &property,
1675                         DBUS_TYPE_INVALID);
1676         if (r < 0) {
1677                 if (!quiet)
1678                         puts("unknown");
1679                 return 0;
1680         }
1681
1682         if (!dbus_message_iter_init(reply, &iter) ||
1683             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT)  {
1684                 log_error("Failed to parse reply.");
1685                 return r;
1686         }
1687
1688         dbus_message_iter_recurse(&iter, &sub);
1689
1690         if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING)  {
1691                 log_error("Failed to parse reply.");
1692                 return r;
1693         }
1694
1695         dbus_message_iter_get_basic(&sub, &state);
1696
1697         if (!quiet)
1698                 puts(state);
1699
1700         return strv_find(check_states, state) ? 1 : 0;
1701 }
1702
1703 static void check_triggering_units(
1704                 DBusConnection *bus,
1705                 const char *unit_name) {
1706
1707         _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
1708         DBusMessageIter iter, sub;
1709         const char *interface = "org.freedesktop.systemd1.Unit",
1710                    *load_state_property = "LoadState",
1711                    *triggered_by_property = "TriggeredBy",
1712                    *state;
1713         _cleanup_free_ char *unit_path = NULL, *n = NULL;
1714         bool print_warning_label = true;
1715         int r;
1716
1717         n = unit_name_mangle(unit_name);
1718         if (!n) {
1719                 log_oom();
1720                 return;
1721         }
1722
1723         unit_path = unit_dbus_path_from_name(n);
1724         if (!unit_path) {
1725                 log_oom();
1726                 return;
1727         }
1728
1729         r = bus_method_call_with_reply(
1730                         bus,
1731                         "org.freedesktop.systemd1",
1732                         unit_path,
1733                         "org.freedesktop.DBus.Properties",
1734                         "Get",
1735                         &reply,
1736                         NULL,
1737                         DBUS_TYPE_STRING, &interface,
1738                         DBUS_TYPE_STRING, &load_state_property,
1739                         DBUS_TYPE_INVALID);
1740         if (r < 0)
1741                 return;
1742
1743         if (!dbus_message_iter_init(reply, &iter) ||
1744             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
1745                 log_error("Failed to parse reply.");
1746                 return;
1747         }
1748
1749         dbus_message_iter_recurse(&iter, &sub);
1750
1751         if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING)  {
1752             log_error("Failed to parse reply.");
1753             return;
1754         }
1755
1756         dbus_message_iter_get_basic(&sub, &state);
1757
1758         if (streq(state, "masked"))
1759             return;
1760
1761         dbus_message_unref(reply);
1762         reply = NULL;
1763
1764         r = bus_method_call_with_reply(
1765                         bus,
1766                         "org.freedesktop.systemd1",
1767                         unit_path,
1768                         "org.freedesktop.DBus.Properties",
1769                         "Get",
1770                         &reply,
1771                         NULL,
1772                         DBUS_TYPE_STRING, &interface,
1773                         DBUS_TYPE_STRING, &triggered_by_property,
1774                         DBUS_TYPE_INVALID);
1775         if (r < 0)
1776                 return;
1777
1778         if (!dbus_message_iter_init(reply, &iter) ||
1779             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
1780                 log_error("Failed to parse reply.");
1781                 return;
1782         }
1783
1784         dbus_message_iter_recurse(&iter, &sub);
1785         dbus_message_iter_recurse(&sub, &iter);
1786         sub = iter;
1787
1788         while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
1789                 const char * const check_states[] = {
1790                         "active",
1791                         "reloading",
1792                         NULL
1793                 };
1794                 const char *service_trigger;
1795
1796                 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
1797                         log_error("Failed to parse reply.");
1798                         return;
1799                 }
1800
1801                 dbus_message_iter_get_basic(&sub, &service_trigger);
1802
1803                 r = check_one_unit(bus, service_trigger, (char**) check_states, true);
1804                 if (r < 0)
1805                         return;
1806                 if (r > 0) {
1807                         if (print_warning_label) {
1808                                 log_warning("Warning: Stopping %s, but it can still be activated by:", unit_name);
1809                                 print_warning_label = false;
1810                         }
1811
1812                         log_warning("  %s", service_trigger);
1813                 }
1814
1815                 dbus_message_iter_next(&sub);
1816         }
1817 }
1818
1819 static int start_unit_one(
1820                 DBusConnection *bus,
1821                 const char *method,
1822                 const char *name,
1823                 const char *mode,
1824                 DBusError *error,
1825                 Set *s) {
1826
1827         _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
1828         _cleanup_free_ char *n;
1829         const char *path;
1830         int r;
1831
1832         assert(method);
1833         assert(name);
1834         assert(mode);
1835         assert(error);
1836
1837         n = unit_name_mangle(name);
1838         if (!n)
1839                 return log_oom();
1840
1841         r = bus_method_call_with_reply(
1842                         bus,
1843                         "org.freedesktop.systemd1",
1844                         "/org/freedesktop/systemd1",
1845                         "org.freedesktop.systemd1.Manager",
1846                         method,
1847                         &reply,
1848                         error,
1849                         DBUS_TYPE_STRING, &n,
1850                         DBUS_TYPE_STRING, &mode,
1851                         DBUS_TYPE_INVALID);
1852         if (r) {
1853                 if (r == -ENOENT && arg_action != ACTION_SYSTEMCTL)
1854                         /* There's always a fallback possible for
1855                          * legacy actions. */
1856                         r = -EADDRNOTAVAIL;
1857                 else
1858                         log_error("Failed to issue method call: %s", bus_error_message(error));
1859
1860                 return r;
1861         }
1862
1863         if (!dbus_message_get_args(reply, error,
1864                                    DBUS_TYPE_OBJECT_PATH, &path,
1865                                    DBUS_TYPE_INVALID)) {
1866                 log_error("Failed to parse reply: %s", bus_error_message(error));
1867                 return -EIO;
1868         }
1869
1870         if (need_daemon_reload(bus, n) > 0)
1871                 log_warning("Warning: Unit file of %s changed on disk, 'systemctl %sdaemon-reload' recommended.",
1872                             n, arg_scope == UNIT_FILE_SYSTEM ? "" : "--user ");
1873
1874         if (s) {
1875                 char *p;
1876
1877                 p = strdup(path);
1878                 if (!p)
1879                         return log_oom();
1880
1881                 r = set_consume(s, p);
1882                 if (r < 0) {
1883                         log_error("Failed to add path to set.");
1884                         return r;
1885                 }
1886         }
1887
1888         return 0;
1889 }
1890
1891 static const struct {
1892         const char *target;
1893         const char *verb;
1894         const char *mode;
1895 } action_table[_ACTION_MAX] = {
1896         [ACTION_HALT]         = { SPECIAL_HALT_TARGET,         "halt",         "replace-irreversibly" },
1897         [ACTION_POWEROFF]     = { SPECIAL_POWEROFF_TARGET,     "poweroff",     "replace-irreversibly" },
1898         [ACTION_REBOOT]       = { SPECIAL_REBOOT_TARGET,       "reboot",       "replace-irreversibly" },
1899         [ACTION_KEXEC]        = { SPECIAL_KEXEC_TARGET,        "kexec",        "replace-irreversibly" },
1900         [ACTION_RUNLEVEL2]    = { SPECIAL_RUNLEVEL2_TARGET,    NULL,           "isolate" },
1901         [ACTION_RUNLEVEL3]    = { SPECIAL_RUNLEVEL3_TARGET,    NULL,           "isolate" },
1902         [ACTION_RUNLEVEL4]    = { SPECIAL_RUNLEVEL4_TARGET,    NULL,           "isolate" },
1903         [ACTION_RUNLEVEL5]    = { SPECIAL_RUNLEVEL5_TARGET,    NULL,           "isolate" },
1904         [ACTION_RESCUE]       = { SPECIAL_RESCUE_TARGET,       "rescue",       "isolate" },
1905         [ACTION_EMERGENCY]    = { SPECIAL_EMERGENCY_TARGET,    "emergency",    "isolate" },
1906         [ACTION_DEFAULT]      = { SPECIAL_DEFAULT_TARGET,      "default",      "isolate" },
1907         [ACTION_EXIT]         = { SPECIAL_EXIT_TARGET,         "exit",         "replace-irreversibly" },
1908         [ACTION_SUSPEND]      = { SPECIAL_SUSPEND_TARGET,      "suspend",      "replace-irreversibly" },
1909         [ACTION_HIBERNATE]    = { SPECIAL_HIBERNATE_TARGET,    "hibernate",    "replace-irreversibly" },
1910         [ACTION_HYBRID_SLEEP] = { SPECIAL_HYBRID_SLEEP_TARGET, "hybrid-sleep", "replace-irreversibly" },
1911 };
1912
1913 static enum action verb_to_action(const char *verb) {
1914         enum action i;
1915
1916         for (i = ACTION_INVALID; i < _ACTION_MAX; i++)
1917                 if (action_table[i].verb && streq(verb, action_table[i].verb))
1918                         return i;
1919         return ACTION_INVALID;
1920 }
1921
1922 static int start_unit(DBusConnection *bus, char **args) {
1923
1924         int r, ret = 0;
1925         const char *method, *mode, *one_name;
1926         _cleanup_set_free_free_ Set *s = NULL;
1927         _cleanup_dbus_error_free_ DBusError error;
1928         char **name;
1929
1930         dbus_error_init(&error);
1931
1932         assert(bus);
1933
1934         ask_password_agent_open_if_enabled();
1935
1936         if (arg_action == ACTION_SYSTEMCTL) {
1937                 enum action action;
1938                 method =
1939                         streq(args[0], "stop") ||
1940                         streq(args[0], "condstop")              ? "StopUnit" :
1941                         streq(args[0], "reload")                ? "ReloadUnit" :
1942                         streq(args[0], "restart")               ? "RestartUnit" :
1943
1944                         streq(args[0], "try-restart")           ||
1945                         streq(args[0], "condrestart")           ? "TryRestartUnit" :
1946
1947                         streq(args[0], "reload-or-restart")     ? "ReloadOrRestartUnit" :
1948
1949                         streq(args[0], "reload-or-try-restart") ||
1950                         streq(args[0], "condreload") ||
1951
1952                         streq(args[0], "force-reload")          ? "ReloadOrTryRestartUnit" :
1953                                                                   "StartUnit";
1954                 action = verb_to_action(args[0]);
1955
1956                 mode = streq(args[0], "isolate") ? "isolate" :
1957                        action_table[action].mode ?: arg_job_mode;
1958
1959                 one_name = action_table[action].target;
1960
1961         } else {
1962                 assert(arg_action < ELEMENTSOF(action_table));
1963                 assert(action_table[arg_action].target);
1964
1965                 method = "StartUnit";
1966
1967                 mode = action_table[arg_action].mode;
1968                 one_name = action_table[arg_action].target;
1969         }
1970
1971         if (!arg_no_block) {
1972                 ret = enable_wait_for_jobs(bus);
1973                 if (ret < 0) {
1974                         log_error("Could not watch jobs: %s", strerror(-ret));
1975                         return ret;
1976                 }
1977
1978                 s = set_new(string_hash_func, string_compare_func);
1979                 if (!s)
1980                         return log_oom();
1981         }
1982
1983         if (one_name) {
1984                 ret = start_unit_one(bus, method, one_name, mode, &error, s);
1985                 if (ret < 0)
1986                         ret = translate_bus_error_to_exit_status(ret, &error);
1987         } else {
1988                 STRV_FOREACH(name, args+1) {
1989                         r = start_unit_one(bus, method, *name, mode, &error, s);
1990                         if (r < 0) {
1991                                 ret = translate_bus_error_to_exit_status(r, &error);
1992                                 dbus_error_free(&error);
1993                         }
1994                 }
1995         }
1996
1997         if (!arg_no_block) {
1998                 r = wait_for_jobs(bus, s);
1999                 if (r < 0)
2000                         return r;
2001
2002                 /* When stopping units, warn if they can still be triggered by
2003                  * another active unit (socket, path, timer) */
2004                 if (!arg_quiet && streq(method, "StopUnit")) {
2005                         if (one_name)
2006                                 check_triggering_units(bus, one_name);
2007                         else
2008                                 STRV_FOREACH(name, args+1)
2009                                         check_triggering_units(bus, *name);
2010                 }
2011         }
2012
2013         return ret;
2014 }
2015
2016 /* Ask systemd-logind, which might grant access to unprivileged users
2017  * through PolicyKit */
2018 static int reboot_with_logind(DBusConnection *bus, enum action a) {
2019 #ifdef HAVE_LOGIND
2020         const char *method;
2021         dbus_bool_t interactive = true;
2022
2023         if (!bus)
2024                 return -EIO;
2025
2026         polkit_agent_open_if_enabled();
2027
2028         switch (a) {
2029
2030         case ACTION_REBOOT:
2031                 method = "Reboot";
2032                 break;
2033
2034         case ACTION_POWEROFF:
2035                 method = "PowerOff";
2036                 break;
2037
2038         case ACTION_SUSPEND:
2039                 method = "Suspend";
2040                 break;
2041
2042         case ACTION_HIBERNATE:
2043                 method = "Hibernate";
2044                 break;
2045
2046         case ACTION_HYBRID_SLEEP:
2047                 method = "HybridSleep";
2048                 break;
2049
2050         default:
2051                 return -EINVAL;
2052         }
2053
2054         return bus_method_call_with_reply(
2055                         bus,
2056                         "org.freedesktop.login1",
2057                         "/org/freedesktop/login1",
2058                         "org.freedesktop.login1.Manager",
2059                         method,
2060                         NULL,
2061                         NULL,
2062                         DBUS_TYPE_BOOLEAN, &interactive,
2063                         DBUS_TYPE_INVALID);
2064 #else
2065         return -ENOSYS;
2066 #endif
2067 }
2068
2069 static int check_inhibitors(DBusConnection *bus, enum action a) {
2070 #ifdef HAVE_LOGIND
2071         _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
2072         DBusMessageIter iter, sub, sub2;
2073         int r;
2074         unsigned c = 0;
2075         _cleanup_strv_free_ char **sessions = NULL;
2076         char **s;
2077
2078         if (!bus)
2079                 return 0;
2080
2081         if (arg_ignore_inhibitors || arg_force > 0)
2082                 return 0;
2083
2084         if (arg_when > 0)
2085                 return 0;
2086
2087         if (geteuid() == 0)
2088                 return 0;
2089
2090         if (!on_tty())
2091                 return 0;
2092
2093         r = bus_method_call_with_reply(
2094                         bus,
2095                         "org.freedesktop.login1",
2096                         "/org/freedesktop/login1",
2097                         "org.freedesktop.login1.Manager",
2098                         "ListInhibitors",
2099                         &reply,
2100                         NULL,
2101                         DBUS_TYPE_INVALID);
2102         if (r < 0)
2103                 /* If logind is not around, then there are no inhibitors... */
2104                 return 0;
2105
2106         if (!dbus_message_iter_init(reply, &iter) ||
2107             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
2108             dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
2109                 log_error("Failed to parse reply.");
2110                 return -EIO;
2111         }
2112
2113         dbus_message_iter_recurse(&iter, &sub);
2114         while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
2115                 const char *what, *who, *why, *mode;
2116                 uint32_t uid, pid;
2117                 _cleanup_strv_free_ char **sv = NULL;
2118                 _cleanup_free_ char *comm = NULL, *user = NULL;
2119
2120                 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
2121                         log_error("Failed to parse reply.");
2122                         return -EIO;
2123                 }
2124
2125                 dbus_message_iter_recurse(&sub, &sub2);
2126
2127                 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &what, true) < 0 ||
2128                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &who, true) < 0 ||
2129                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &why, true) < 0 ||
2130                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &mode, true) < 0 ||
2131                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &uid, true) < 0 ||
2132                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &pid, false) < 0) {
2133                         log_error("Failed to parse reply.");
2134                         return -EIO;
2135                 }
2136
2137                 if (!streq(mode, "block"))
2138                         goto next;
2139
2140                 sv = strv_split(what, ":");
2141                 if (!sv)
2142                         return log_oom();
2143
2144                 if (!strv_contains(sv,
2145                                   a == ACTION_HALT ||
2146                                   a == ACTION_POWEROFF ||
2147                                   a == ACTION_REBOOT ||
2148                                   a == ACTION_KEXEC ? "shutdown" : "sleep"))
2149                         goto next;
2150
2151                 get_process_comm(pid, &comm);
2152                 user = uid_to_name(uid);
2153                 log_warning("Operation inhibited by \"%s\" (PID %lu \"%s\", user %s), reason is \"%s\".",
2154                             who, (unsigned long) pid, strna(comm), strna(user), why);
2155                 c++;
2156
2157         next:
2158                 dbus_message_iter_next(&sub);
2159         }
2160
2161         dbus_message_iter_recurse(&iter, &sub);
2162
2163         /* Check for current sessions */
2164         sd_get_sessions(&sessions);
2165         STRV_FOREACH(s, sessions) {
2166                 uid_t uid;
2167                 _cleanup_free_ char *type = NULL, *tty = NULL, *seat = NULL, *user = NULL, *service = NULL, *class = NULL;
2168
2169                 if (sd_session_get_uid(*s, &uid) < 0 || uid == getuid())
2170                         continue;
2171
2172                 if (sd_session_get_class(*s, &class) < 0 || !streq(class, "user"))
2173                         continue;
2174
2175                 if (sd_session_get_type(*s, &type) < 0 || (!streq(type, "x11") && !streq(type, "tty")))
2176                         continue;
2177
2178                 sd_session_get_tty(*s, &tty);
2179                 sd_session_get_seat(*s, &seat);
2180                 sd_session_get_service(*s, &service);
2181                 user = uid_to_name(uid);
2182
2183                 log_warning("User %s is logged in on %s.", strna(user), isempty(tty) ? (isempty(seat) ? strna(service) : seat) : tty);
2184                 c++;
2185         }
2186
2187         if (c <= 0)
2188                 return 0;
2189
2190         log_error("Please retry operation after closing inhibitors and logging out other users.\nAlternatively, ignore inhibitors and users with 'systemctl %s -i'.",
2191                   action_table[a].verb);
2192
2193         return -EPERM;
2194 #else
2195         return 0;
2196 #endif
2197 }
2198
2199 static int start_special(DBusConnection *bus, char **args) {
2200         enum action a;
2201         int r;
2202
2203         assert(args);
2204
2205         a = verb_to_action(args[0]);
2206
2207         r = check_inhibitors(bus, a);
2208         if (r < 0)
2209                 return r;
2210
2211         if (arg_force >= 2 && geteuid() != 0) {
2212                 log_error("Must be root.");
2213                 return -EPERM;
2214         }
2215
2216         if (arg_force >= 2 &&
2217             (a == ACTION_HALT ||
2218              a == ACTION_POWEROFF ||
2219              a == ACTION_REBOOT))
2220                 halt_now(a);
2221
2222         if (arg_force >= 1 &&
2223             (a == ACTION_HALT ||
2224              a == ACTION_POWEROFF ||
2225              a == ACTION_REBOOT ||
2226              a == ACTION_KEXEC ||
2227              a == ACTION_EXIT))
2228                 return daemon_reload(bus, args);
2229
2230         /* first try logind, to allow authentication with polkit */
2231         if (geteuid() != 0 &&
2232             (a == ACTION_POWEROFF ||
2233              a == ACTION_REBOOT ||
2234              a == ACTION_SUSPEND ||
2235              a == ACTION_HIBERNATE ||
2236              a == ACTION_HYBRID_SLEEP)) {
2237                 r = reboot_with_logind(bus, a);
2238                 if (r >= 0)
2239                         return r;
2240         }
2241
2242         r = start_unit(bus, args);
2243         if (r == EXIT_SUCCESS)
2244                 warn_wall(a);
2245
2246         return r;
2247 }
2248
2249 static int check_unit_active(DBusConnection *bus, char **args) {
2250         const char * const check_states[] = {
2251                 "active",
2252                 "reloading",
2253                 NULL
2254         };
2255
2256         char **name;
2257         int r = 3; /* According to LSB: "program is not running" */
2258
2259         assert(bus);
2260         assert(args);
2261
2262         STRV_FOREACH(name, args+1) {
2263                 int state;
2264
2265                 state = check_one_unit(bus, *name, (char**) check_states, arg_quiet);
2266                 if (state < 0)
2267                         return state;
2268                 if (state > 0)
2269                         r = 0;
2270         }
2271
2272         return r;
2273 }
2274
2275 static int check_unit_failed(DBusConnection *bus, char **args) {
2276         const char * const check_states[] = {
2277                 "failed",
2278                 NULL
2279         };
2280
2281         char **name;
2282         int r = 1;
2283
2284         assert(bus);
2285         assert(args);
2286
2287         STRV_FOREACH(name, args+1) {
2288                 int state;
2289
2290                 state = check_one_unit(bus, *name, (char**) check_states, arg_quiet);
2291                 if (state < 0)
2292                         return state;
2293                 if (state > 0)
2294                         r = 0;
2295         }
2296
2297         return r;
2298 }
2299
2300 static int kill_unit(DBusConnection *bus, char **args) {
2301         char **name;
2302         int r = 0;
2303
2304         assert(bus);
2305         assert(args);
2306
2307         if (!arg_kill_who)
2308                 arg_kill_who = "all";
2309
2310         STRV_FOREACH(name, args+1) {
2311                 _cleanup_free_ char *n = NULL;
2312
2313                 n = unit_name_mangle(*name);
2314                 if (!n)
2315                         return log_oom();
2316
2317                 r = bus_method_call_with_reply(
2318                                 bus,
2319                                 "org.freedesktop.systemd1",
2320                                 "/org/freedesktop/systemd1",
2321                                 "org.freedesktop.systemd1.Manager",
2322                                 "KillUnit",
2323                                 NULL,
2324                                 NULL,
2325                                 DBUS_TYPE_STRING, &n,
2326                                 DBUS_TYPE_STRING, &arg_kill_who,
2327                                 DBUS_TYPE_INT32, &arg_signal,
2328                                 DBUS_TYPE_INVALID);
2329                 if (r < 0)
2330                         return r;
2331         }
2332         return 0;
2333 }
2334
2335 typedef struct ExecStatusInfo {
2336         char *name;
2337
2338         char *path;
2339         char **argv;
2340
2341         bool ignore;
2342
2343         usec_t start_timestamp;
2344         usec_t exit_timestamp;
2345         pid_t pid;
2346         int code;
2347         int status;
2348
2349         LIST_FIELDS(struct ExecStatusInfo, exec);
2350 } ExecStatusInfo;
2351
2352 static void exec_status_info_free(ExecStatusInfo *i) {
2353         assert(i);
2354
2355         free(i->name);
2356         free(i->path);
2357         strv_free(i->argv);
2358         free(i);
2359 }
2360
2361 static int exec_status_info_deserialize(DBusMessageIter *sub, ExecStatusInfo *i) {
2362         uint64_t start_timestamp, exit_timestamp, start_timestamp_monotonic, exit_timestamp_monotonic;
2363         DBusMessageIter sub2, sub3;
2364         const char*path;
2365         unsigned n;
2366         uint32_t pid;
2367         int32_t code, status;
2368         dbus_bool_t ignore;
2369
2370         assert(i);
2371         assert(i);
2372
2373         if (dbus_message_iter_get_arg_type(sub) != DBUS_TYPE_STRUCT)
2374                 return -EIO;
2375
2376         dbus_message_iter_recurse(sub, &sub2);
2377
2378         if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, true) < 0)
2379                 return -EIO;
2380
2381         i->path = strdup(path);
2382         if (!i->path)
2383                 return -ENOMEM;
2384
2385         if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_ARRAY ||
2386             dbus_message_iter_get_element_type(&sub2) != DBUS_TYPE_STRING)
2387                 return -EIO;
2388
2389         n = 0;
2390         dbus_message_iter_recurse(&sub2, &sub3);
2391         while (dbus_message_iter_get_arg_type(&sub3) != DBUS_TYPE_INVALID) {
2392                 assert(dbus_message_iter_get_arg_type(&sub3) == DBUS_TYPE_STRING);
2393                 dbus_message_iter_next(&sub3);
2394                 n++;
2395         }
2396
2397         i->argv = new0(char*, n+1);
2398         if (!i->argv)
2399                 return -ENOMEM;
2400
2401         n = 0;
2402         dbus_message_iter_recurse(&sub2, &sub3);
2403         while (dbus_message_iter_get_arg_type(&sub3) != DBUS_TYPE_INVALID) {
2404                 const char *s;
2405
2406                 assert(dbus_message_iter_get_arg_type(&sub3) == DBUS_TYPE_STRING);
2407                 dbus_message_iter_get_basic(&sub3, &s);
2408                 dbus_message_iter_next(&sub3);
2409
2410                 i->argv[n] = strdup(s);
2411                 if (!i->argv[n])
2412                         return -ENOMEM;
2413
2414                 n++;
2415         }
2416
2417         if (!dbus_message_iter_next(&sub2) ||
2418             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_BOOLEAN, &ignore, true) < 0 ||
2419             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &start_timestamp, true) < 0 ||
2420             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &start_timestamp_monotonic, true) < 0 ||
2421             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &exit_timestamp, true) < 0 ||
2422             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &exit_timestamp_monotonic, true) < 0 ||
2423             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &pid, true) < 0 ||
2424             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_INT32, &code, true) < 0 ||
2425             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_INT32, &status, false) < 0)
2426                 return -EIO;
2427
2428         i->ignore = ignore;
2429         i->start_timestamp = (usec_t) start_timestamp;
2430         i->exit_timestamp = (usec_t) exit_timestamp;
2431         i->pid = (pid_t) pid;
2432         i->code = code;
2433         i->status = status;
2434
2435         return 0;
2436 }
2437
2438 typedef struct UnitStatusInfo {
2439         const char *id;
2440         const char *load_state;
2441         const char *active_state;
2442         const char *sub_state;
2443         const char *unit_file_state;
2444
2445         const char *description;
2446         const char *following;
2447
2448         char **documentation;
2449
2450         const char *fragment_path;
2451         const char *source_path;
2452         const char *control_group;
2453
2454         char **dropin_paths;
2455
2456         const char *load_error;
2457         const char *result;
2458
2459         usec_t inactive_exit_timestamp;
2460         usec_t inactive_exit_timestamp_monotonic;
2461         usec_t active_enter_timestamp;
2462         usec_t active_exit_timestamp;
2463         usec_t inactive_enter_timestamp;
2464
2465         bool need_daemon_reload;
2466
2467         /* Service */
2468         pid_t main_pid;
2469         pid_t control_pid;
2470         const char *status_text;
2471         const char *pid_file;
2472         bool running:1;
2473
2474         usec_t start_timestamp;
2475         usec_t exit_timestamp;
2476
2477         int exit_code, exit_status;
2478
2479         usec_t condition_timestamp;
2480         bool condition_result;
2481         bool failed_condition_trigger;
2482         bool failed_condition_negate;
2483         const char *failed_condition;
2484         const char *failed_condition_param;
2485
2486         /* Socket */
2487         unsigned n_accepted;
2488         unsigned n_connections;
2489         bool accept;
2490
2491         /* Pairs of type, path */
2492         char **listen;
2493
2494         /* Device */
2495         const char *sysfs_path;
2496
2497         /* Mount, Automount */
2498         const char *where;
2499
2500         /* Swap */
2501         const char *what;
2502
2503         LIST_HEAD(ExecStatusInfo, exec);
2504 } UnitStatusInfo;
2505
2506 static void print_status_info(UnitStatusInfo *i,
2507                               bool *ellipsized) {
2508         ExecStatusInfo *p;
2509         const char *on, *off, *ss;
2510         usec_t timestamp;
2511         char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], *s1;
2512         char since2[FORMAT_TIMESTAMP_MAX], *s2;
2513         const char *path;
2514         int flags =
2515                 arg_all * OUTPUT_SHOW_ALL |
2516                 (!on_tty() || pager_have()) * OUTPUT_FULL_WIDTH |
2517                 on_tty() * OUTPUT_COLOR |
2518                 !arg_quiet * OUTPUT_WARN_CUTOFF |
2519                 arg_full * OUTPUT_FULL_WIDTH;
2520         char **t, **t2;
2521
2522         assert(i);
2523
2524         /* This shows pretty information about a unit. See
2525          * print_property() for a low-level property printer */
2526
2527         printf("%s", strna(i->id));
2528
2529         if (i->description && !streq_ptr(i->id, i->description))
2530                 printf(" - %s", i->description);
2531
2532         printf("\n");
2533
2534         if (i->following)
2535                 printf("   Follow: unit currently follows state of %s\n", i->following);
2536
2537         if (streq_ptr(i->load_state, "error")) {
2538                 on = ansi_highlight_red();
2539                 off = ansi_highlight_off();
2540         } else
2541                 on = off = "";
2542
2543         path = i->source_path ? i->source_path : i->fragment_path;
2544
2545         if (i->load_error)
2546                 printf("   Loaded: %s%s%s (Reason: %s)\n",
2547                        on, strna(i->load_state), off, i->load_error);
2548         else if (path && i->unit_file_state)
2549                 printf("   Loaded: %s%s%s (%s; %s)\n",
2550                        on, strna(i->load_state), off, path, i->unit_file_state);
2551         else if (path)
2552                 printf("   Loaded: %s%s%s (%s)\n",
2553                        on, strna(i->load_state), off, path);
2554         else
2555                 printf("   Loaded: %s%s%s\n",
2556                        on, strna(i->load_state), off);
2557
2558         if (!strv_isempty(i->dropin_paths)) {
2559                 char ** dropin;
2560                 char * dir = NULL;
2561                 bool last = false;
2562
2563                 STRV_FOREACH(dropin, i->dropin_paths) {
2564                         if (! dir || last) {
2565                                 printf(dir ? "        " : "  Drop-In: ");
2566
2567                                 free(dir);
2568
2569                                 if (path_get_parent(*dropin, &dir) < 0) {
2570                                         log_oom();
2571                                         return;
2572                                 }
2573
2574                                 printf("%s\n           %s", dir,
2575                                        draw_special_char(DRAW_TREE_RIGHT));
2576                         }
2577
2578                         last = ! (*(dropin + 1) && startswith(*(dropin + 1), dir));
2579
2580                         printf("%s%s", path_get_file_name(*dropin), last ? "\n" : ", ");
2581                 }
2582
2583                 free(dir);
2584         }
2585
2586         ss = streq_ptr(i->active_state, i->sub_state) ? NULL : i->sub_state;
2587
2588         if (streq_ptr(i->active_state, "failed")) {
2589                 on = ansi_highlight_red();
2590                 off = ansi_highlight_off();
2591         } else if (streq_ptr(i->active_state, "active") || streq_ptr(i->active_state, "reloading")) {
2592                 on = ansi_highlight_green();
2593                 off = ansi_highlight_off();
2594         } else
2595                 on = off = "";
2596
2597         if (ss)
2598                 printf("   Active: %s%s (%s)%s",
2599                        on, strna(i->active_state), ss, off);
2600         else
2601                 printf("   Active: %s%s%s",
2602                        on, strna(i->active_state), off);
2603
2604         if (!isempty(i->result) && !streq(i->result, "success"))
2605                 printf(" (Result: %s)", i->result);
2606
2607         timestamp = (streq_ptr(i->active_state, "active")      ||
2608                      streq_ptr(i->active_state, "reloading"))   ? i->active_enter_timestamp :
2609                     (streq_ptr(i->active_state, "inactive")    ||
2610                      streq_ptr(i->active_state, "failed"))      ? i->inactive_enter_timestamp :
2611                     streq_ptr(i->active_state, "activating")    ? i->inactive_exit_timestamp :
2612                                                                   i->active_exit_timestamp;
2613
2614         s1 = format_timestamp_relative(since1, sizeof(since1), timestamp);
2615         s2 = format_timestamp(since2, sizeof(since2), timestamp);
2616
2617         if (s1)
2618                 printf(" since %s; %s\n", s2, s1);
2619         else if (s2)
2620                 printf(" since %s\n", s2);
2621         else
2622                 printf("\n");
2623
2624         if (!i->condition_result && i->condition_timestamp > 0) {
2625                 s1 = format_timestamp_relative(since1, sizeof(since1), i->condition_timestamp);
2626                 s2 = format_timestamp(since2, sizeof(since2), i->condition_timestamp);
2627
2628                 printf("           start condition failed at %s%s%s\n",
2629                        s2, s1 ? "; " : "", s1 ? s1 : "");
2630                 if (i->failed_condition_trigger)
2631                         printf("           none of the trigger conditions were met\n");
2632                 else if (i->failed_condition)
2633                         printf("           %s=%s%s was not met\n",
2634                                i->failed_condition,
2635                                i->failed_condition_negate ? "!" : "",
2636                                i->failed_condition_param);
2637         }
2638
2639         if (i->sysfs_path)
2640                 printf("   Device: %s\n", i->sysfs_path);
2641         if (i->where)
2642                 printf("    Where: %s\n", i->where);
2643         if (i->what)
2644                 printf("     What: %s\n", i->what);
2645
2646         STRV_FOREACH(t, i->documentation)
2647                 printf(" %*s %s\n", 9, t == i->documentation ? "Docs:" : "", *t);
2648
2649         STRV_FOREACH_PAIR(t, t2, i->listen)
2650                 printf(" %*s %s (%s)\n", 9, t == i->listen ? "Listen:" : "", *t2, *t);
2651
2652         if (i->accept)
2653                 printf(" Accepted: %u; Connected: %u\n", i->n_accepted, i->n_connections);
2654
2655         LIST_FOREACH(exec, p, i->exec) {
2656                 _cleanup_free_ char *argv = NULL;
2657                 bool good;
2658
2659                 /* Only show exited processes here */
2660                 if (p->code == 0)
2661                         continue;
2662
2663                 argv = strv_join(p->argv, " ");
2664                 printf("  Process: %u %s=%s ", p->pid, p->name, strna(argv));
2665
2666                 good = is_clean_exit_lsb(p->code, p->status, NULL);
2667                 if (!good) {
2668                         on = ansi_highlight_red();
2669                         off = ansi_highlight_off();
2670                 } else
2671                         on = off = "";
2672
2673                 printf("%s(code=%s, ", on, sigchld_code_to_string(p->code));
2674
2675                 if (p->code == CLD_EXITED) {
2676                         const char *c;
2677
2678                         printf("status=%i", p->status);
2679
2680                         c = exit_status_to_string(p->status, EXIT_STATUS_SYSTEMD);
2681                         if (c)
2682                                 printf("/%s", c);
2683
2684                 } else
2685                         printf("signal=%s", signal_to_string(p->status));
2686
2687                 printf(")%s\n", off);
2688
2689                 if (i->main_pid == p->pid &&
2690                     i->start_timestamp == p->start_timestamp &&
2691                     i->exit_timestamp == p->start_timestamp)
2692                         /* Let's not show this twice */
2693                         i->main_pid = 0;
2694
2695                 if (p->pid == i->control_pid)
2696                         i->control_pid = 0;
2697         }
2698
2699         if (i->main_pid > 0 || i->control_pid > 0) {
2700                 if (i->main_pid > 0) {
2701                         printf(" Main PID: %u", (unsigned) i->main_pid);
2702
2703                         if (i->running) {
2704                                 _cleanup_free_ char *comm = NULL;
2705                                 get_process_comm(i->main_pid, &comm);
2706                                 if (comm)
2707                                         printf(" (%s)", comm);
2708                         } else if (i->exit_code > 0) {
2709                                 printf(" (code=%s, ", sigchld_code_to_string(i->exit_code));
2710
2711                                 if (i->exit_code == CLD_EXITED) {
2712                                         const char *c;
2713
2714                                         printf("status=%i", i->exit_status);
2715
2716                                         c = exit_status_to_string(i->exit_status, EXIT_STATUS_SYSTEMD);
2717                                         if (c)
2718                                                 printf("/%s", c);
2719
2720                                 } else
2721                                         printf("signal=%s", signal_to_string(i->exit_status));
2722                                 printf(")");
2723                         }
2724
2725                         if (i->control_pid > 0)
2726                                 printf(";");
2727                 }
2728
2729                 if (i->control_pid > 0) {
2730                         _cleanup_free_ char *c = NULL;
2731
2732                         printf(" %8s: %u", i->main_pid ? "" : " Control", (unsigned) i->control_pid);
2733
2734                         get_process_comm(i->control_pid, &c);
2735                         if (c)
2736                                 printf(" (%s)", c);
2737                 }
2738
2739                 printf("\n");
2740         }
2741
2742         if (i->status_text)
2743                 printf("   Status: \"%s\"\n", i->status_text);
2744
2745         if (i->control_group &&
2746             (i->main_pid > 0 || i->control_pid > 0 || cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, i->control_group, false) == 0)) {
2747                 unsigned c;
2748
2749                 printf("   CGroup: %s\n", i->control_group);
2750
2751                 if (arg_transport != TRANSPORT_SSH) {
2752                         unsigned k = 0;
2753                         pid_t extra[2];
2754                         char prefix[] = "           ";
2755
2756                         c = columns();
2757                         if (c > sizeof(prefix) - 1)
2758                                 c -= sizeof(prefix) - 1;
2759                         else
2760                                 c = 0;
2761
2762                         if (i->main_pid > 0)
2763                                 extra[k++] = i->main_pid;
2764
2765                         if (i->control_pid > 0)
2766                                 extra[k++] = i->control_pid;
2767
2768                         show_cgroup_and_extra(SYSTEMD_CGROUP_CONTROLLER, i->control_group, prefix,
2769                                                       c, false, extra, k, flags);
2770                 }
2771         }
2772
2773         if (i->id && arg_transport != TRANSPORT_SSH) {
2774                 printf("\n");
2775                 show_journal_by_unit(stdout,
2776                                      i->id,
2777                                      arg_output,
2778                                      0,
2779                                      i->inactive_exit_timestamp_monotonic,
2780                                      arg_lines,
2781                                      getuid(),
2782                                      flags,
2783                                      arg_scope == UNIT_FILE_SYSTEM,
2784                                      ellipsized);
2785         }
2786
2787         if (i->need_daemon_reload)
2788                 printf("\n%sWarning:%s Unit file changed on disk, 'systemctl %sdaemon-reload' recommended.\n",
2789                        ansi_highlight_red(),
2790                        ansi_highlight_off(),
2791                        arg_scope == UNIT_FILE_SYSTEM ? "" : "--user ");
2792 }
2793
2794 static void show_unit_help(UnitStatusInfo *i) {
2795         char **p;
2796
2797         assert(i);
2798
2799         if (!i->documentation) {
2800                 log_info("Documentation for %s not known.", i->id);
2801                 return;
2802         }
2803
2804         STRV_FOREACH(p, i->documentation) {
2805
2806                 if (startswith(*p, "man:")) {
2807                         size_t k;
2808                         char *e = NULL;
2809                         _cleanup_free_ char *page = NULL, *section = NULL;
2810                         const char *args[4] = { "man", NULL, NULL, NULL };
2811                         pid_t pid;
2812
2813                         k = strlen(*p);
2814
2815                         if ((*p)[k-1] == ')')
2816                                 e = strrchr(*p, '(');
2817
2818                         if (e) {
2819                                 page = strndup((*p) + 4, e - *p - 4);
2820                                 section = strndup(e + 1, *p + k - e - 2);
2821                                 if (!page || !section) {
2822                                         log_oom();
2823                                         return;
2824                                 }
2825
2826                                 args[1] = section;
2827                                 args[2] = page;
2828                         } else
2829                                 args[1] = *p + 4;
2830
2831                         pid = fork();
2832                         if (pid < 0) {
2833                                 log_error("Failed to fork: %m");
2834                                 continue;
2835                         }
2836
2837                         if (pid == 0) {
2838                                 /* Child */
2839                                 execvp(args[0], (char**) args);
2840                                 log_error("Failed to execute man: %m");
2841                                 _exit(EXIT_FAILURE);
2842                         }
2843
2844                         wait_for_terminate(pid, NULL);
2845                 } else
2846                         log_info("Can't show: %s", *p);
2847         }
2848 }
2849
2850 static int status_property(const char *name, DBusMessageIter *iter, UnitStatusInfo *i) {
2851
2852         assert(name);
2853         assert(iter);
2854         assert(i);
2855
2856         switch (dbus_message_iter_get_arg_type(iter)) {
2857
2858         case DBUS_TYPE_STRING: {
2859                 const char *s;
2860
2861                 dbus_message_iter_get_basic(iter, &s);
2862
2863                 if (!isempty(s)) {
2864                         if (streq(name, "Id"))
2865                                 i->id = s;
2866                         else if (streq(name, "LoadState"))
2867                                 i->load_state = s;
2868                         else if (streq(name, "ActiveState"))
2869                                 i->active_state = s;
2870                         else if (streq(name, "SubState"))
2871                                 i->sub_state = s;
2872                         else if (streq(name, "Description"))
2873                                 i->description = s;
2874                         else if (streq(name, "FragmentPath"))
2875                                 i->fragment_path = s;
2876                         else if (streq(name, "SourcePath"))
2877                                 i->source_path = s;
2878 #ifndef NOLEGACY
2879                         else if (streq(name, "DefaultControlGroup")) {
2880                                 const char *e;
2881                                 e = startswith(s, SYSTEMD_CGROUP_CONTROLLER ":");
2882                                 if (e)
2883                                         i->control_group = e;
2884                         }
2885 #endif
2886                         else if (streq(name, "ControlGroup"))
2887                                 i->control_group = s;
2888                         else if (streq(name, "StatusText"))
2889                                 i->status_text = s;
2890                         else if (streq(name, "PIDFile"))
2891                                 i->pid_file = s;
2892                         else if (streq(name, "SysFSPath"))
2893                                 i->sysfs_path = s;
2894                         else if (streq(name, "Where"))
2895                                 i->where = s;
2896                         else if (streq(name, "What"))
2897                                 i->what = s;
2898                         else if (streq(name, "Following"))
2899                                 i->following = s;
2900                         else if (streq(name, "UnitFileState"))
2901                                 i->unit_file_state = s;
2902                         else if (streq(name, "Result"))
2903                                 i->result = s;
2904                 }
2905
2906                 break;
2907         }
2908
2909         case DBUS_TYPE_BOOLEAN: {
2910                 dbus_bool_t b;
2911
2912                 dbus_message_iter_get_basic(iter, &b);
2913
2914                 if (streq(name, "Accept"))
2915                         i->accept = b;
2916                 else if (streq(name, "NeedDaemonReload"))
2917                         i->need_daemon_reload = b;
2918                 else if (streq(name, "ConditionResult"))
2919                         i->condition_result = b;
2920
2921                 break;
2922         }
2923
2924         case DBUS_TYPE_UINT32: {
2925                 uint32_t u;
2926
2927                 dbus_message_iter_get_basic(iter, &u);
2928
2929                 if (streq(name, "MainPID")) {
2930                         if (u > 0) {
2931                                 i->main_pid = (pid_t) u;
2932                                 i->running = true;
2933                         }
2934                 } else if (streq(name, "ControlPID"))
2935                         i->control_pid = (pid_t) u;
2936                 else if (streq(name, "ExecMainPID")) {
2937                         if (u > 0)
2938                                 i->main_pid = (pid_t) u;
2939                 } else if (streq(name, "NAccepted"))
2940                         i->n_accepted = u;
2941                 else if (streq(name, "NConnections"))
2942                         i->n_connections = u;
2943
2944                 break;
2945         }
2946
2947         case DBUS_TYPE_INT32: {
2948                 int32_t j;
2949
2950                 dbus_message_iter_get_basic(iter, &j);
2951
2952                 if (streq(name, "ExecMainCode"))
2953                         i->exit_code = (int) j;
2954                 else if (streq(name, "ExecMainStatus"))
2955                         i->exit_status = (int) j;
2956
2957                 break;
2958         }
2959
2960         case DBUS_TYPE_UINT64: {
2961                 uint64_t u;
2962
2963                 dbus_message_iter_get_basic(iter, &u);
2964
2965                 if (streq(name, "ExecMainStartTimestamp"))
2966                         i->start_timestamp = (usec_t) u;
2967                 else if (streq(name, "ExecMainExitTimestamp"))
2968                         i->exit_timestamp = (usec_t) u;
2969                 else if (streq(name, "ActiveEnterTimestamp"))
2970                         i->active_enter_timestamp = (usec_t) u;
2971                 else if (streq(name, "InactiveEnterTimestamp"))
2972                         i->inactive_enter_timestamp = (usec_t) u;
2973                 else if (streq(name, "InactiveExitTimestamp"))
2974                         i->inactive_exit_timestamp = (usec_t) u;
2975                 else if (streq(name, "InactiveExitTimestampMonotonic"))
2976                         i->inactive_exit_timestamp_monotonic = (usec_t) u;
2977                 else if (streq(name, "ActiveExitTimestamp"))
2978                         i->active_exit_timestamp = (usec_t) u;
2979                 else if (streq(name, "ConditionTimestamp"))
2980                         i->condition_timestamp = (usec_t) u;
2981
2982                 break;
2983         }
2984
2985         case DBUS_TYPE_ARRAY: {
2986
2987                 if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT &&
2988                     startswith(name, "Exec")) {
2989                         DBusMessageIter sub;
2990
2991                         dbus_message_iter_recurse(iter, &sub);
2992                         while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2993                                 ExecStatusInfo *info;
2994                                 int r;
2995
2996                                 info = new0(ExecStatusInfo, 1);
2997                                 if (!info)
2998                                         return -ENOMEM;
2999
3000                                 info->name = strdup(name);
3001                                 if (!info->name) {
3002                                         free(info);
3003                                         return -ENOMEM;
3004                                 }
3005
3006                                 r = exec_status_info_deserialize(&sub, info);
3007                                 if (r < 0) {
3008                                         free(info);
3009                                         return r;
3010                                 }
3011
3012                                 LIST_PREPEND(ExecStatusInfo, exec, i->exec, info);
3013
3014                                 dbus_message_iter_next(&sub);
3015                         }
3016
3017                 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT &&
3018                            streq(name, "Listen")) {
3019                         DBusMessageIter sub, sub2;
3020
3021                         dbus_message_iter_recurse(iter, &sub);
3022                         while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
3023                                 const char *type, *path;
3024
3025                                 dbus_message_iter_recurse(&sub, &sub2);
3026
3027                                 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) >= 0 &&
3028                                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, false) >= 0) {
3029                                         int r;
3030
3031                                         r = strv_extend(&i->listen, type);
3032                                         if (r < 0)
3033                                                 return r;
3034                                         r = strv_extend(&i->listen, path);
3035                                         if (r < 0)
3036                                                 return r;
3037                                 }
3038
3039                                 dbus_message_iter_next(&sub);
3040                         }
3041
3042                         return 0;
3043
3044                 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRING &&
3045                            streq(name, "DropInPaths")) {
3046                         int r = bus_parse_strv_iter(iter, &i->dropin_paths);
3047                         if (r < 0)
3048                                 return r;
3049
3050                 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRING &&
3051                            streq(name, "Documentation")) {
3052
3053                         DBusMessageIter sub;
3054
3055                         dbus_message_iter_recurse(iter, &sub);
3056                         while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING) {
3057                                 const char *s;
3058                                 int r;
3059
3060                                 dbus_message_iter_get_basic(&sub, &s);
3061
3062                                 r = strv_extend(&i->documentation, s);
3063                                 if (r < 0)
3064                                         return r;
3065
3066                                 dbus_message_iter_next(&sub);
3067                         }
3068
3069                 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT &&
3070                            streq(name, "Conditions")) {
3071                         DBusMessageIter sub, sub2;
3072
3073     &n