chiark / gitweb /
1f81bda7e3fd38516580a4b86e021b9d69860e16
[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_load_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_failed = false;
97 static bool arg_runtime = false;
98 static char **arg_wall = NULL;
99 static const char *arg_kill_who = NULL;
100 static int arg_signal = SIGTERM;
101 static const char *arg_root = NULL;
102 static usec_t arg_when = 0;
103 static enum action {
104         ACTION_INVALID,
105         ACTION_SYSTEMCTL,
106         ACTION_HALT,
107         ACTION_POWEROFF,
108         ACTION_REBOOT,
109         ACTION_KEXEC,
110         ACTION_EXIT,
111         ACTION_SUSPEND,
112         ACTION_HIBERNATE,
113         ACTION_HYBRID_SLEEP,
114         ACTION_RUNLEVEL2,
115         ACTION_RUNLEVEL3,
116         ACTION_RUNLEVEL4,
117         ACTION_RUNLEVEL5,
118         ACTION_RESCUE,
119         ACTION_EMERGENCY,
120         ACTION_DEFAULT,
121         ACTION_RELOAD,
122         ACTION_REEXEC,
123         ACTION_RUNLEVEL,
124         ACTION_CANCEL_SHUTDOWN,
125         _ACTION_MAX
126 } arg_action = ACTION_SYSTEMCTL;
127 static enum transport {
128         TRANSPORT_NORMAL,
129         TRANSPORT_SSH,
130         TRANSPORT_POLKIT
131 } arg_transport = TRANSPORT_NORMAL;
132 static char *arg_host = NULL;
133 static char *arg_user = NULL;
134 static unsigned arg_lines = 10;
135 static OutputMode arg_output = OUTPUT_SHORT;
136 static bool arg_plain = false;
137
138 static bool private_bus = false;
139
140 static int daemon_reload(DBusConnection *bus, char **args);
141 static void halt_now(enum action a);
142
143 static void pager_open_if_enabled(void) {
144
145         if (arg_no_pager)
146                 return;
147
148         pager_open(false);
149 }
150
151 static void ask_password_agent_open_if_enabled(void) {
152
153         /* Open the password agent as a child process if necessary */
154
155         if (!arg_ask_password)
156                 return;
157
158         if (arg_scope != UNIT_FILE_SYSTEM)
159                 return;
160
161         ask_password_agent_open();
162 }
163
164 #ifdef HAVE_LOGIND
165 static void polkit_agent_open_if_enabled(void) {
166
167         /* Open the polkit agent as a child process if necessary */
168
169         if (!arg_ask_password)
170                 return;
171
172         if (arg_scope != UNIT_FILE_SYSTEM)
173                 return;
174
175         polkit_agent_open();
176 }
177 #endif
178
179 static const char *ansi_highlight(bool b) {
180
181         if (!on_tty())
182                 return "";
183
184         return b ? ANSI_HIGHLIGHT_ON : ANSI_HIGHLIGHT_OFF;
185 }
186
187 static const char *ansi_highlight_red(bool b) {
188
189         if (!on_tty())
190                 return "";
191
192         return b ? ANSI_HIGHLIGHT_RED_ON : ANSI_HIGHLIGHT_OFF;
193 }
194
195 static const char *ansi_highlight_green(bool b) {
196
197         if (!on_tty())
198                 return "";
199
200         return b ? ANSI_HIGHLIGHT_GREEN_ON : ANSI_HIGHLIGHT_OFF;
201 }
202
203 static int translate_bus_error_to_exit_status(int r, const DBusError *error) {
204         assert(error);
205
206         if (!dbus_error_is_set(error))
207                 return r;
208
209         if (dbus_error_has_name(error, DBUS_ERROR_ACCESS_DENIED) ||
210             dbus_error_has_name(error, BUS_ERROR_ONLY_BY_DEPENDENCY) ||
211             dbus_error_has_name(error, BUS_ERROR_NO_ISOLATION) ||
212             dbus_error_has_name(error, BUS_ERROR_TRANSACTION_IS_DESTRUCTIVE))
213                 return EXIT_NOPERMISSION;
214
215         if (dbus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT))
216                 return EXIT_NOTINSTALLED;
217
218         if (dbus_error_has_name(error, BUS_ERROR_JOB_TYPE_NOT_APPLICABLE) ||
219             dbus_error_has_name(error, BUS_ERROR_NOT_SUPPORTED))
220                 return EXIT_NOTIMPLEMENTED;
221
222         if (dbus_error_has_name(error, BUS_ERROR_LOAD_FAILED))
223                 return EXIT_NOTCONFIGURED;
224
225         if (r != 0)
226                 return r;
227
228         return EXIT_FAILURE;
229 }
230
231 static void warn_wall(enum action a) {
232         static const char *table[_ACTION_MAX] = {
233                 [ACTION_HALT]            = "The system is going down for system halt NOW!",
234                 [ACTION_REBOOT]          = "The system is going down for reboot NOW!",
235                 [ACTION_POWEROFF]        = "The system is going down for power-off NOW!",
236                 [ACTION_KEXEC]           = "The system is going down for kexec reboot NOW!",
237                 [ACTION_RESCUE]          = "The system is going down to rescue mode NOW!",
238                 [ACTION_EMERGENCY]       = "The system is going down to emergency mode NOW!",
239                 [ACTION_CANCEL_SHUTDOWN] = "The system shutdown has been cancelled NOW!"
240         };
241
242         if (arg_no_wall)
243                 return;
244
245         if (arg_wall) {
246                 _cleanup_free_ char *p;
247
248                 p = strv_join(arg_wall, " ");
249                 if (!p) {
250                         log_oom();
251                         return;
252                 }
253
254                 if (*p) {
255                         utmp_wall(p, NULL);
256                         return;
257                 }
258         }
259
260         if (!table[a])
261                 return;
262
263         utmp_wall(table[a], NULL);
264 }
265
266 static bool avoid_bus(void) {
267
268         if (running_in_chroot() > 0)
269                 return true;
270
271         if (sd_booted() <= 0)
272                 return true;
273
274         if (!isempty(arg_root))
275                 return true;
276
277         if (arg_scope == UNIT_FILE_GLOBAL)
278                 return true;
279
280         return false;
281 }
282
283 static int compare_unit_info(const void *a, const void *b) {
284         const char *d1, *d2;
285         const struct unit_info *u = a, *v = b;
286
287         d1 = strrchr(u->id, '.');
288         d2 = strrchr(v->id, '.');
289
290         if (d1 && d2) {
291                 int r;
292
293                 r = strcasecmp(d1, d2);
294                 if (r != 0)
295                         return r;
296         }
297
298         return strcasecmp(u->id, v->id);
299 }
300
301 static bool output_show_unit(const struct unit_info *u) {
302         const char *dot;
303
304         if (arg_failed)
305                 return streq(u->active_state, "failed");
306
307         return (!arg_types || ((dot = strrchr(u->id, '.')) &&
308                                strv_find(arg_types, dot+1))) &&
309                 (!arg_load_states || strv_find(arg_load_states, u->load_state)) &&
310                 (arg_all || !(streq(u->active_state, "inactive")
311                               || u->following[0]) || u->job_id > 0);
312 }
313
314 static void output_units_list(const struct unit_info *unit_infos, unsigned c) {
315         unsigned id_len, max_id_len, active_len, sub_len, job_len, desc_len, n_shown = 0;
316         const struct unit_info *u;
317         int job_count = 0;
318
319         max_id_len = sizeof("UNIT")-1;
320         active_len = sizeof("ACTIVE")-1;
321         sub_len = sizeof("SUB")-1;
322         job_len = sizeof("JOB")-1;
323         desc_len = 0;
324
325         for (u = unit_infos; u < unit_infos + c; u++) {
326                 if (!output_show_unit(u))
327                         continue;
328
329                 max_id_len = MAX(max_id_len, strlen(u->id));
330                 active_len = MAX(active_len, strlen(u->active_state));
331                 sub_len = MAX(sub_len, strlen(u->sub_state));
332                 if (u->job_id != 0) {
333                         job_len = MAX(job_len, strlen(u->job_type));
334                         job_count++;
335                 }
336         }
337
338         if (!arg_full) {
339                 unsigned basic_len;
340                 id_len = MIN(max_id_len, 25u);
341                 basic_len = 5 + id_len + 5 + active_len + sub_len;
342                 if (job_count)
343                         basic_len += job_len + 1;
344                 if (basic_len < (unsigned) columns()) {
345                         unsigned extra_len, incr;
346                         extra_len = columns() - basic_len;
347                         /* Either UNIT already got 25, or is fully satisfied.
348                          * Grant up to 25 to DESC now. */
349                         incr = MIN(extra_len, 25u);
350                         desc_len += incr;
351                         extra_len -= incr;
352                         /* split the remaining space between UNIT and DESC,
353                          * but do not give UNIT more than it needs. */
354                         if (extra_len > 0) {
355                                 incr = MIN(extra_len / 2, max_id_len - id_len);
356                                 id_len += incr;
357                                 desc_len += extra_len - incr;
358                         }
359                 }
360         } else
361                 id_len = max_id_len;
362
363         for (u = unit_infos; u < unit_infos + c; u++) {
364                 _cleanup_free_ char *e = NULL;
365                 const char *on_loaded, *off_loaded, *on = "";
366                 const char *on_active, *off_active, *off = "";
367
368                 if (!output_show_unit(u))
369                         continue;
370
371                 if (!n_shown && !arg_no_legend) {
372                         printf("%-*s %-6s %-*s %-*s ", id_len, "UNIT", "LOAD",
373                                active_len, "ACTIVE", sub_len, "SUB");
374                         if (job_count)
375                                 printf("%-*s ", job_len, "JOB");
376                         if (!arg_full && arg_no_pager)
377                                 printf("%.*s\n", desc_len, "DESCRIPTION");
378                         else
379                                 printf("%s\n", "DESCRIPTION");
380                 }
381
382                 n_shown++;
383
384                 if (streq(u->load_state, "error")) {
385                         on_loaded = on = ansi_highlight_red(true);
386                         off_loaded = off = ansi_highlight_red(false);
387                 } else
388                         on_loaded = off_loaded = "";
389
390                 if (streq(u->active_state, "failed")) {
391                         on_active = on = ansi_highlight_red(true);
392                         off_active = off = ansi_highlight_red(false);
393                 } else
394                         on_active = off_active = "";
395
396                 e = arg_full ? NULL : ellipsize(u->id, id_len, 33);
397
398                 printf("%s%-*s%s %s%-6s%s %s%-*s %-*s%s %-*s",
399                        on, id_len, e ? e : u->id, off,
400                        on_loaded, u->load_state, off_loaded,
401                        on_active, active_len, u->active_state,
402                        sub_len, u->sub_state, off_active,
403                        job_count ? job_len + 1 : 0, u->job_id ? u->job_type : "");
404                 if (!arg_full && arg_no_pager)
405                         printf("%.*s\n", desc_len, u->description);
406                 else
407                         printf("%s\n", u->description);
408         }
409
410         if (!arg_no_legend) {
411                 const char *on, *off;
412
413                 if (n_shown) {
414                         printf("\nLOAD   = Reflects whether the unit definition was properly loaded.\n"
415                                "ACTIVE = The high-level unit activation state, i.e. generalization of SUB.\n"
416                                "SUB    = The low-level unit activation state, values depend on unit type.\n");
417                         if (job_count)
418                                 printf("JOB    = Pending job for the unit.\n");
419                         puts("");
420                         on = ansi_highlight(true);
421                         off = ansi_highlight(false);
422                 } else {
423                         on = ansi_highlight_red(true);
424                         off = ansi_highlight_red(false);
425                 }
426
427                 if (arg_all)
428                         printf("%s%u loaded units listed.%s\n"
429                                "To show all installed unit files use 'systemctl list-unit-files'.\n",
430                                on, n_shown, off);
431                 else
432                         printf("%s%u loaded units listed.%s Pass --all to see loaded but inactive units, too.\n"
433                                "To show all installed unit files use 'systemctl list-unit-files'.\n",
434                                on, n_shown, off);
435         }
436 }
437
438 static int get_unit_list(DBusConnection *bus, DBusMessage **reply,
439                          struct unit_info **unit_infos, unsigned *c) {
440         DBusMessageIter iter, sub;
441         size_t size = 0;
442         int r;
443
444         assert(bus);
445         assert(unit_infos);
446         assert(c);
447
448         r = bus_method_call_with_reply(
449                         bus,
450                         "org.freedesktop.systemd1",
451                         "/org/freedesktop/systemd1",
452                         "org.freedesktop.systemd1.Manager",
453                         "ListUnits",
454                         reply,
455                         NULL,
456                         DBUS_TYPE_INVALID);
457         if (r < 0)
458                 return r;
459
460         if (!dbus_message_iter_init(*reply, &iter) ||
461             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
462             dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT)  {
463                 log_error("Failed to parse reply.");
464                 return -EIO;
465         }
466
467         dbus_message_iter_recurse(&iter, &sub);
468
469         while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
470                 if (!GREEDY_REALLOC(*unit_infos, size, *c + 1))
471                         return log_oom();
472
473                 bus_parse_unit_info(&sub, *unit_infos + *c);
474                 (*c)++;
475
476                 dbus_message_iter_next(&sub);
477         }
478
479         return 0;
480 }
481
482 static int list_units(DBusConnection *bus, char **args) {
483         _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
484         _cleanup_free_ struct unit_info *unit_infos = NULL;
485         unsigned c = 0;
486         int r;
487
488         pager_open_if_enabled();
489
490         r = get_unit_list(bus, &reply, &unit_infos, &c);
491         if (r < 0)
492                 return r;
493
494         qsort(unit_infos, c, sizeof(struct unit_info), compare_unit_info);
495
496         output_units_list(unit_infos, c);
497
498         return 0;
499 }
500
501 static int get_triggered_units(DBusConnection *bus, const char* unit_path,
502                                char*** triggered)
503 {
504         const char *interface = "org.freedesktop.systemd1.Unit",
505                    *triggers_property = "Triggers";
506         _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
507         DBusMessageIter iter, sub;
508         int r;
509
510         r = bus_method_call_with_reply(bus,
511                                        "org.freedesktop.systemd1",
512                                        unit_path,
513                                        "org.freedesktop.DBus.Properties",
514                                        "Get",
515                                        &reply,
516                                        NULL,
517                                        DBUS_TYPE_STRING, &interface,
518                                        DBUS_TYPE_STRING, &triggers_property,
519                                        DBUS_TYPE_INVALID);
520         if (r < 0)
521                 return r;
522
523         if (!dbus_message_iter_init(reply, &iter) ||
524             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
525                 log_error("Failed to parse reply.");
526                 return -EBADMSG;
527         }
528
529         dbus_message_iter_recurse(&iter, &sub);
530         dbus_message_iter_recurse(&sub, &iter);
531         sub = iter;
532
533         while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
534                 const char *unit;
535
536                 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
537                         log_error("Failed to parse reply.");
538                         return -EBADMSG;
539                 }
540
541                 dbus_message_iter_get_basic(&sub, &unit);
542                 r = strv_extend(triggered, unit);
543                 if (r < 0)
544                         return r;
545
546                 dbus_message_iter_next(&sub);
547         }
548
549         return 0;
550 }
551
552 static int get_listening(DBusConnection *bus, const char* unit_path,
553                          char*** listen, unsigned *c)
554 {
555         const char *interface = "org.freedesktop.systemd1.Socket",
556                    *listen_property = "Listen";
557         _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
558         DBusMessageIter iter, sub;
559         int r;
560
561         r = bus_method_call_with_reply(bus,
562                                        "org.freedesktop.systemd1",
563                                        unit_path,
564                                        "org.freedesktop.DBus.Properties",
565                                        "Get",
566                                        &reply,
567                                        NULL,
568                                        DBUS_TYPE_STRING, &interface,
569                                        DBUS_TYPE_STRING, &listen_property,
570                                        DBUS_TYPE_INVALID);
571         if (r < 0)
572                 return r;
573
574         if (!dbus_message_iter_init(reply, &iter) ||
575             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
576                 log_error("Failed to parse reply.");
577                 return -EBADMSG;
578         }
579
580         dbus_message_iter_recurse(&iter, &sub);
581         dbus_message_iter_recurse(&sub, &iter);
582         sub = iter;
583
584         while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
585                 DBusMessageIter sub2;
586                 const char *type, *path;
587
588                 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
589                         log_error("Failed to parse reply.");
590                         return -EBADMSG;
591                 }
592
593                 dbus_message_iter_recurse(&sub, &sub2);
594
595                 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) >= 0 &&
596                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, false) >= 0) {
597                         r = strv_extend(listen, type);
598                         if (r < 0)
599                                 return r;
600
601                         r = strv_extend(listen, path);
602                         if (r < 0)
603                                 return r;
604
605                         (*c) ++;
606                 }
607
608                 dbus_message_iter_next(&sub);
609         }
610
611         return 0;
612 }
613
614 struct socket_info {
615         const char* id;
616
617         char* type;
618         char* path;
619
620         /* Note: triggered is a list here, although it almost certainly
621          * will always be one unit. Nevertheless, dbus API allows for multiple
622          * values, so let's follow that.*/
623         char** triggered;
624
625         /* The strv above is shared. free is set only in the first one. */
626         bool own_triggered;
627 };
628
629 static int socket_info_compare(struct socket_info *a, struct socket_info *b) {
630         int o = strcmp(a->path, b->path);
631         if (o == 0)
632                 o = strcmp(a->type, b->type);
633         return o;
634 }
635
636 static int output_sockets_list(struct socket_info *socket_infos, unsigned cs) {
637         struct socket_info *s;
638         unsigned pathlen = sizeof("LISTEN") - 1,
639                 typelen = (sizeof("TYPE") - 1) * arg_show_types,
640                 socklen = sizeof("UNIT") - 1,
641                 servlen = sizeof("ACTIVATES") - 1;
642         const char *on, *off;
643
644         for (s = socket_infos; s < socket_infos + cs; s++) {
645                 char **a;
646                 unsigned tmp = 0;
647
648                 socklen = MAX(socklen, strlen(s->id));
649                 if (arg_show_types)
650                         typelen = MAX(typelen, strlen(s->type));
651                 pathlen = MAX(pathlen, strlen(s->path));
652
653                 STRV_FOREACH(a, s->triggered)
654                         tmp += strlen(*a) + 2*(a != s->triggered);
655                 servlen = MAX(servlen, tmp);
656         }
657
658         if (cs) {
659                 if (!arg_no_legend)
660                         printf("%-*s %-*.*s%-*s %s\n",
661                                pathlen, "LISTEN",
662                                typelen + arg_show_types, typelen + arg_show_types, "TYPE ",
663                                socklen, "UNIT",
664                                "ACTIVATES");
665
666                 for (s = socket_infos; s < socket_infos + cs; s++) {
667                         char **a;
668
669                         if (arg_show_types)
670                                 printf("%-*s %-*s %-*s",
671                                        pathlen, s->path, typelen, s->type, socklen, s->id);
672                         else
673                                 printf("%-*s %-*s",
674                                        pathlen, s->path, socklen, s->id);
675                         STRV_FOREACH(a, s->triggered)
676                                 printf("%s %s",
677                                        a == s->triggered ? "" : ",", *a);
678                         printf("\n");
679                 }
680
681                 on = ansi_highlight(true);
682                 off = ansi_highlight(false);
683                 if (!arg_no_legend)
684                         printf("\n");
685         } else {
686                 on = ansi_highlight_red(true);
687                 off = ansi_highlight_red(false);
688         }
689
690         if (!arg_no_legend) {
691                 printf("%s%u sockets listed.%s\n", on, cs, off);
692                 if (!arg_all)
693                         printf("Pass --all to see loaded but inactive sockets, too.\n");
694         }
695
696         return 0;
697 }
698
699 static int list_sockets(DBusConnection *bus, char **args) {
700         _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
701         _cleanup_free_ struct unit_info *unit_infos = NULL;
702         struct socket_info *socket_infos = NULL;
703         const struct unit_info *u;
704         struct socket_info *s;
705         unsigned cu = 0, cs = 0;
706         size_t size = 0;
707         int r;
708
709         pager_open_if_enabled();
710
711         r = get_unit_list(bus, &reply, &unit_infos, &cu);
712         if (r < 0)
713                 return r;
714
715         for (u = unit_infos; u < unit_infos + cu; u++) {
716                 const char *dot;
717                 _cleanup_strv_free_ char **listen = NULL, **triggered = NULL;
718                 unsigned c = 0, i;
719
720                 if (!output_show_unit(u))
721                         continue;
722
723                 if ((dot = strrchr(u->id, '.')) && !streq(dot+1, "socket"))
724                         continue;
725
726                 r = get_triggered_units(bus, u->unit_path, &triggered);
727                 if (r < 0)
728                         goto cleanup;
729
730                 r = get_listening(bus, u->unit_path, &listen, &c);
731                 if (r < 0)
732                         goto cleanup;
733
734                 if (!GREEDY_REALLOC(socket_infos, size, cs + c)) {
735                         r = log_oom();
736                         goto cleanup;
737                 }
738
739                 for (i = 0; i < c; i++)
740                         socket_infos[cs + i] = (struct socket_info) {
741                                 .id = u->id,
742                                 .type = listen[i*2],
743                                 .path = listen[i*2 + 1],
744                                 .triggered = triggered,
745                                 .own_triggered = i==0,
746                         };
747
748                 /* from this point on we will cleanup those socket_infos */
749                 cs += c;
750                 free(listen);
751                 listen = triggered = NULL; /* avoid cleanup */
752         }
753
754         qsort(socket_infos, cs, sizeof(struct socket_info),
755               (__compar_fn_t) socket_info_compare);
756
757         output_sockets_list(socket_infos, cs);
758
759  cleanup:
760         assert(cs == 0 || socket_infos);
761         for (s = socket_infos; s < socket_infos + cs; s++) {
762                 free(s->type);
763                 free(s->path);
764                 if (s->own_triggered)
765                         strv_free(s->triggered);
766         }
767         free(socket_infos);
768
769         return 0;
770 }
771
772 static int compare_unit_file_list(const void *a, const void *b) {
773         const char *d1, *d2;
774         const UnitFileList *u = a, *v = b;
775
776         d1 = strrchr(u->path, '.');
777         d2 = strrchr(v->path, '.');
778
779         if (d1 && d2) {
780                 int r;
781
782                 r = strcasecmp(d1, d2);
783                 if (r != 0)
784                         return r;
785         }
786
787         return strcasecmp(path_get_file_name(u->path), path_get_file_name(v->path));
788 }
789
790 static bool output_show_unit_file(const UnitFileList *u) {
791         const char *dot;
792
793         return !arg_types || ((dot = strrchr(u->path, '.')) && strv_find(arg_types, dot+1));
794 }
795
796 static void output_unit_file_list(const UnitFileList *units, unsigned c) {
797         unsigned max_id_len, id_cols, state_cols, n_shown = 0;
798         const UnitFileList *u;
799
800         max_id_len = sizeof("UNIT FILE")-1;
801         state_cols = sizeof("STATE")-1;
802         for (u = units; u < units + c; u++) {
803                 if (!output_show_unit_file(u))
804                         continue;
805
806                 max_id_len = MAX(max_id_len, strlen(path_get_file_name(u->path)));
807                 state_cols = MAX(state_cols, strlen(unit_file_state_to_string(u->state)));
808         }
809
810         if (!arg_full) {
811                 unsigned basic_cols;
812                 id_cols = MIN(max_id_len, 25u);
813                 basic_cols = 1 + id_cols + state_cols;
814                 if (basic_cols < (unsigned) columns())
815                         id_cols += MIN(columns() - basic_cols, max_id_len - id_cols);
816         } else
817                 id_cols = max_id_len;
818
819         if (!arg_no_legend)
820                 printf("%-*s %-*s\n", id_cols, "UNIT FILE", state_cols, "STATE");
821
822         for (u = units; u < units + c; u++) {
823                 _cleanup_free_ char *e = NULL;
824                 const char *on, *off;
825                 const char *id;
826
827                 if (!output_show_unit_file(u))
828                         continue;
829
830                 n_shown++;
831
832                 if (u->state == UNIT_FILE_MASKED ||
833                     u->state == UNIT_FILE_MASKED_RUNTIME ||
834                     u->state == UNIT_FILE_DISABLED ||
835                     u->state == UNIT_FILE_INVALID) {
836                         on  = ansi_highlight_red(true);
837                         off = ansi_highlight_red(false);
838                 } else if (u->state == UNIT_FILE_ENABLED) {
839                         on  = ansi_highlight_green(true);
840                         off = ansi_highlight_green(false);
841                 } else
842                         on = off = "";
843
844                 id = path_get_file_name(u->path);
845
846                 e = arg_full ? NULL : ellipsize(id, id_cols, 33);
847
848                 printf("%-*s %s%-*s%s\n",
849                        id_cols, e ? e : id,
850                        on, state_cols, unit_file_state_to_string(u->state), off);
851         }
852
853         if (!arg_no_legend)
854                 printf("\n%u unit files listed.\n", n_shown);
855 }
856
857 static int list_unit_files(DBusConnection *bus, char **args) {
858         _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
859         _cleanup_free_ UnitFileList *units = NULL;
860         DBusMessageIter iter, sub, sub2;
861         unsigned c = 0, n_units = 0;
862         int r;
863
864         pager_open_if_enabled();
865
866         if (avoid_bus()) {
867                 Hashmap *h;
868                 UnitFileList *u;
869                 Iterator i;
870
871                 h = hashmap_new(string_hash_func, string_compare_func);
872                 if (!h)
873                         return log_oom();
874
875                 r = unit_file_get_list(arg_scope, arg_root, h);
876                 if (r < 0) {
877                         unit_file_list_free(h);
878                         log_error("Failed to get unit file list: %s", strerror(-r));
879                         return r;
880                 }
881
882                 n_units = hashmap_size(h);
883                 units = new(UnitFileList, n_units);
884                 if (!units) {
885                         unit_file_list_free(h);
886                         return log_oom();
887                 }
888
889                 HASHMAP_FOREACH(u, h, i) {
890                         memcpy(units + c++, u, sizeof(UnitFileList));
891                         free(u);
892                 }
893
894                 hashmap_free(h);
895         } else {
896                 r = bus_method_call_with_reply(
897                                 bus,
898                                 "org.freedesktop.systemd1",
899                                 "/org/freedesktop/systemd1",
900                                 "org.freedesktop.systemd1.Manager",
901                                 "ListUnitFiles",
902                                 &reply,
903                                 NULL,
904                                 DBUS_TYPE_INVALID);
905                 if (r < 0)
906                         return r;
907
908                 if (!dbus_message_iter_init(reply, &iter) ||
909                     dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
910                     dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT)  {
911                         log_error("Failed to parse reply.");
912                         return -EIO;
913                 }
914
915                 dbus_message_iter_recurse(&iter, &sub);
916
917                 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
918                         UnitFileList *u;
919                         const char *state;
920
921                         assert(dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT);
922
923                         if (c >= n_units) {
924                                 UnitFileList *w;
925
926                                 n_units = MAX(2*c, 16u);
927                                 w = realloc(units, sizeof(struct UnitFileList) * n_units);
928                                 if (!w)
929                                         return log_oom();
930
931                                 units = w;
932                         }
933
934                         u = units + c;
935
936                         dbus_message_iter_recurse(&sub, &sub2);
937
938                         if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->path, true) < 0 ||
939                             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &state, false) < 0) {
940                                 log_error("Failed to parse reply.");
941                                 return -EIO;
942                         }
943
944                         u->state = unit_file_state_from_string(state);
945
946                         dbus_message_iter_next(&sub);
947                         c++;
948                 }
949         }
950
951         if (c > 0) {
952                 qsort(units, c, sizeof(UnitFileList), compare_unit_file_list);
953                 output_unit_file_list(units, c);
954         }
955
956         return 0;
957 }
958
959 static int list_dependencies_print(const char *name, int level, unsigned int branches, bool last) {
960         int i;
961         _cleanup_free_ char *n = NULL;
962         size_t len = 0;
963         size_t max_len = MAX(columns(),20u);
964
965         if (!arg_plain) {
966                 for (i = level - 1; i >= 0; i--) {
967                         len += 2;
968                         if(len > max_len - 3 && !arg_full) {
969                                 printf("%s...\n",max_len % 2 ? "" : " ");
970                                 return 0;
971                         }
972                         printf("%s", draw_special_char(branches & (1 << i) ? DRAW_TREE_VERT : DRAW_TREE_SPACE));
973                 }
974                 len += 2;
975                 if(len > max_len - 3 && !arg_full) {
976                         printf("%s...\n",max_len % 2 ? "" : " ");
977                         return 0;
978                 }
979                 printf("%s", draw_special_char(last ? DRAW_TREE_RIGHT : DRAW_TREE_BRANCH));
980         }
981
982         if(arg_full){
983                 printf("%s\n", name);
984                 return 0;
985         }
986
987         n = ellipsize(name, max_len-len, 100);
988         if(!n)
989                 return log_oom();
990
991         printf("%s\n", n);
992         return 0;
993 }
994
995 static int list_dependencies_get_dependencies(DBusConnection *bus, const char *name, char ***deps) {
996         static const char *dependencies[] = {
997                 [DEPENDENCY_FORWARD] = "Requires\0"
998                                        "RequiresOverridable\0"
999                                        "Requisite\0"
1000                                        "RequisiteOverridable\0"
1001                                        "Wants\0",
1002                 [DEPENDENCY_REVERSE] = "RequiredBy\0"
1003                                        "RequiredByOverridable\0"
1004                                        "WantedBy\0"
1005                                        "PartOf\0",
1006                 [DEPENDENCY_AFTER]   = "After\0",
1007                 [DEPENDENCY_BEFORE]  = "Before\0",
1008         };
1009
1010         _cleanup_free_ char *path;
1011         const char *interface = "org.freedesktop.systemd1.Unit";
1012
1013         _cleanup_dbus_message_unref_  DBusMessage *reply = NULL;
1014         DBusMessageIter iter, sub, sub2, sub3;
1015
1016         int r = 0;
1017         char **ret = NULL;
1018
1019         assert(bus);
1020         assert(name);
1021         assert(deps);
1022
1023         path = unit_dbus_path_from_name(name);
1024         if (path == NULL) {
1025                 r = -EINVAL;
1026                 goto finish;
1027         }
1028
1029         r = bus_method_call_with_reply(
1030                 bus,
1031                 "org.freedesktop.systemd1",
1032                 path,
1033                 "org.freedesktop.DBus.Properties",
1034                 "GetAll",
1035                 &reply,
1036                 NULL,
1037                 DBUS_TYPE_STRING, &interface,
1038                 DBUS_TYPE_INVALID);
1039         if (r < 0)
1040                 goto finish;
1041
1042         if (!dbus_message_iter_init(reply, &iter) ||
1043                 dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
1044                 dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_DICT_ENTRY) {
1045                 log_error("Failed to parse reply.");
1046                 r = -EIO;
1047                 goto finish;
1048         }
1049
1050         dbus_message_iter_recurse(&iter, &sub);
1051
1052         while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
1053                 const char *prop;
1054
1055                 assert(dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_DICT_ENTRY);
1056                 dbus_message_iter_recurse(&sub, &sub2);
1057
1058                 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &prop, true) < 0) {
1059                         log_error("Failed to parse reply.");
1060                         r = -EIO;
1061                         goto finish;
1062                 }
1063
1064                 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT) {
1065                         log_error("Failed to parse reply.");
1066                         r = -EIO;
1067                         goto finish;
1068                 }
1069
1070                 dbus_message_iter_recurse(&sub2, &sub3);
1071                 dbus_message_iter_next(&sub);
1072
1073                 assert(arg_dependency < ELEMENTSOF(dependencies));
1074                 if (!nulstr_contains(dependencies[arg_dependency], prop))
1075                         continue;
1076
1077                 if (dbus_message_iter_get_arg_type(&sub3) == DBUS_TYPE_ARRAY) {
1078                         if (dbus_message_iter_get_element_type(&sub3) == DBUS_TYPE_STRING) {
1079                                 DBusMessageIter sub4;
1080                                 dbus_message_iter_recurse(&sub3, &sub4);
1081
1082                                 while (dbus_message_iter_get_arg_type(&sub4) != DBUS_TYPE_INVALID) {
1083                                         const char *s;
1084
1085                                         assert(dbus_message_iter_get_arg_type(&sub4) == DBUS_TYPE_STRING);
1086                                         dbus_message_iter_get_basic(&sub4, &s);
1087
1088                                         r = strv_extend(&ret, s);
1089                                         if (r < 0) {
1090                                                 log_oom();
1091                                                 goto finish;
1092                                         }
1093
1094                                         dbus_message_iter_next(&sub4);
1095                                 }
1096                         }
1097                 }
1098         }
1099 finish:
1100         if (r < 0)
1101                 strv_free(ret);
1102         else
1103                 *deps = ret;
1104         return r;
1105 }
1106
1107 static int list_dependencies_compare(const void *_a, const void *_b) {
1108         const char **a = (const char**) _a, **b = (const char**) _b;
1109         if (unit_name_to_type(*a) == UNIT_TARGET && unit_name_to_type(*b) != UNIT_TARGET)
1110                 return 1;
1111         if (unit_name_to_type(*a) != UNIT_TARGET && unit_name_to_type(*b) == UNIT_TARGET)
1112                 return -1;
1113         return strcasecmp(*a, *b);
1114 }
1115
1116 static int list_dependencies_one(DBusConnection *bus, const char *name, int level, char ***units, unsigned int branches) {
1117         _cleanup_strv_free_ char **deps = NULL, **u;
1118         char **c;
1119         int r = 0;
1120
1121         u = strv_append(*units, name);
1122         if (!u)
1123                 return log_oom();
1124
1125         r = list_dependencies_get_dependencies(bus, name, &deps);
1126         if (r < 0)
1127                 return r;
1128
1129         qsort(deps, strv_length(deps), sizeof (char*), list_dependencies_compare);
1130
1131         STRV_FOREACH(c, deps) {
1132                 if (strv_contains(u, *c)) {
1133                         if (!arg_plain) {
1134                                 r = list_dependencies_print("...", level + 1, (branches << 1) | (c[1] == NULL ? 0 : 1), 1);
1135                                 if (r < 0)
1136                                         return r;
1137                         }
1138                         continue;
1139                 }
1140
1141                 r = list_dependencies_print(*c, level, branches, c[1] == NULL);
1142                 if (r < 0)
1143                         return r;
1144
1145                 if (arg_all || unit_name_to_type(*c) == UNIT_TARGET) {
1146                        r = list_dependencies_one(bus, *c, level + 1, &u, (branches << 1) | (c[1] == NULL ? 0 : 1));
1147                        if(r < 0)
1148                                return r;
1149                 }
1150         }
1151         if (arg_plain) {
1152                 strv_free(*units);
1153                 *units = u;
1154                 u = NULL;
1155         }
1156         return 0;
1157 }
1158
1159 static int list_dependencies(DBusConnection *bus, char **args) {
1160         _cleanup_free_ char *unit = NULL;
1161         _cleanup_strv_free_ char **units = NULL;
1162         const char *u;
1163
1164         assert(bus);
1165
1166         if (args[1]) {
1167                 unit = unit_name_mangle(args[1]);
1168                 if (!unit)
1169                         return log_oom();
1170                 u = unit;
1171         } else
1172                 u = SPECIAL_DEFAULT_TARGET;
1173
1174         pager_open_if_enabled();
1175
1176         puts(u);
1177
1178         return list_dependencies_one(bus, u, 0, &units, 0);
1179 }
1180
1181 static int get_default(DBusConnection *bus, char **args) {
1182         char *path = NULL;
1183         _cleanup_dbus_message_unref_ DBusMessage *m = NULL, *reply = NULL;
1184         int r;
1185         _cleanup_dbus_error_free_ DBusError error;
1186
1187         dbus_error_init(&error);
1188
1189         if (!bus || avoid_bus()) {
1190                 r = unit_file_get_default(arg_scope, arg_root, &path);
1191
1192                 if (r < 0) {
1193                         log_error("Operation failed: %s", strerror(-r));
1194                         goto finish;
1195                 }
1196
1197                 r = 0;
1198         } else {
1199                 r = bus_method_call_with_reply(
1200                         bus,
1201                         "org.freedesktop.systemd1",
1202                         "/org/freedesktop/systemd1",
1203                         "org.freedesktop.systemd1.Manager",
1204                         "GetDefaultTarget",
1205                         &reply,
1206                         NULL,
1207                         DBUS_TYPE_INVALID);
1208
1209                 if (r < 0) {
1210                         log_error("Operation failed: %s", strerror(-r));
1211                         goto finish;
1212                 }
1213
1214                 if (!dbus_message_get_args(reply, &error,
1215                                    DBUS_TYPE_STRING, &path,
1216                                    DBUS_TYPE_INVALID)) {
1217                         log_error("Failed to parse reply: %s", bus_error_message(&error));
1218                         dbus_error_free(&error);
1219                         return  -EIO;
1220                 }
1221         }
1222
1223         if (path)
1224                 printf("%s\n", path);
1225
1226 finish:
1227         if ((!bus || avoid_bus()) && path)
1228                 free(path);
1229
1230         return r;
1231
1232 }
1233
1234 struct job_info {
1235         uint32_t id;
1236         char *name, *type, *state;
1237 };
1238
1239 static void list_jobs_print(struct job_info* jobs, size_t n) {
1240         size_t i;
1241         struct job_info *j;
1242         const char *on, *off;
1243         bool shorten = false;
1244
1245         assert(n == 0 || jobs);
1246
1247         if (n == 0) {
1248                 on = ansi_highlight_green(true);
1249                 off = ansi_highlight_green(false);
1250
1251                 printf("%sNo jobs running.%s\n", on, off);
1252                 return;
1253         }
1254
1255         pager_open_if_enabled();
1256
1257         {
1258                 /* JOB UNIT TYPE STATE */
1259                 unsigned l0 = 3, l1 = 4, l2 = 4, l3 = 5;
1260
1261                 for (i = 0, j = jobs; i < n; i++, j++) {
1262                         assert(j->name && j->type && j->state);
1263                         l0 = MAX(l0, DECIMAL_STR_WIDTH(j->id));
1264                         l1 = MAX(l1, strlen(j->name));
1265                         l2 = MAX(l2, strlen(j->type));
1266                         l3 = MAX(l3, strlen(j->state));
1267                 }
1268
1269                 if (!arg_full && l0 + 1 + l1 + l2 + 1 + l3 > columns()) {
1270                         l1 = MAX(33u, columns() - l0 - l2 - l3 - 3);
1271                         shorten = true;
1272                 }
1273
1274                 if (on_tty())
1275                         printf("%*s %-*s %-*s %-*s\n",
1276                                l0, "JOB",
1277                                l1, "UNIT",
1278                                l2, "TYPE",
1279                                l3, "STATE");
1280
1281                 for (i = 0, j = jobs; i < n; i++, j++) {
1282                         _cleanup_free_ char *e = NULL;
1283
1284                         if (streq(j->state, "running")) {
1285                                 on = ansi_highlight(true);
1286                                 off = ansi_highlight(false);
1287                         } else
1288                                 on = off = "";
1289
1290                         e = shorten ? ellipsize(j->name, l1, 33) : NULL;
1291                         printf("%*u %s%-*s%s %-*s %s%-*s%s\n",
1292                                l0, j->id,
1293                                on, l1, e ? e : j->name, off,
1294                                l2, j->type,
1295                                on, l3, j->state, off);
1296                 }
1297         }
1298
1299         on = ansi_highlight(true);
1300         off = ansi_highlight(false);
1301
1302         if (on_tty())
1303                 printf("\n%s%zu jobs listed%s.\n", on, n, off);
1304 }
1305
1306 static int list_jobs(DBusConnection *bus, char **args) {
1307         _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
1308         DBusMessageIter iter, sub, sub2;
1309         int r;
1310         struct job_info *jobs = NULL;
1311         size_t size = 0, used = 0;
1312
1313         r = bus_method_call_with_reply(
1314                         bus,
1315                         "org.freedesktop.systemd1",
1316                         "/org/freedesktop/systemd1",
1317                         "org.freedesktop.systemd1.Manager",
1318                         "ListJobs",
1319                         &reply,
1320                         NULL,
1321                         DBUS_TYPE_INVALID);
1322         if (r < 0)
1323                 return r;
1324
1325         if (!dbus_message_iter_init(reply, &iter) ||
1326             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
1327             dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT)  {
1328                 log_error("Failed to parse reply.");
1329                 return -EIO;
1330         }
1331
1332         dbus_message_iter_recurse(&iter, &sub);
1333
1334         while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
1335                 const char *name, *type, *state, *job_path, *unit_path;
1336                 uint32_t id;
1337
1338                 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
1339                         log_error("Failed to parse reply.");
1340                         return -EIO;
1341                 }
1342
1343                 dbus_message_iter_recurse(&sub, &sub2);
1344
1345                 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &id, true) < 0 ||
1346                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0 ||
1347                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) < 0 ||
1348                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &state, true) < 0 ||
1349                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &job_path, true) < 0 ||
1350                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &unit_path, false) < 0) {
1351                         log_error("Failed to parse reply.");
1352                         r = -EIO;
1353                         goto finish;
1354                 }
1355
1356                 if (!GREEDY_REALLOC(jobs, size, used + 1)) {
1357                         r = log_oom();
1358                         goto finish;
1359                 }
1360
1361                 jobs[used++] = (struct job_info) { id,
1362                                                    strdup(name),
1363                                                    strdup(type),
1364                                                    strdup(state) };
1365                 if (!jobs[used-1].name || !jobs[used-1].type || !jobs[used-1].state) {
1366                         r = log_oom();
1367                         goto finish;
1368                 }
1369
1370                 dbus_message_iter_next(&sub);
1371         }
1372
1373         list_jobs_print(jobs, used);
1374
1375  finish:
1376         while (used--) {
1377                 free(jobs[used].name);
1378                 free(jobs[used].type);
1379                 free(jobs[used].state);
1380         }
1381         free(jobs);
1382
1383         return 0;
1384 }
1385
1386 static int load_unit(DBusConnection *bus, char **args) {
1387         char **name;
1388
1389         assert(args);
1390
1391         STRV_FOREACH(name, args+1) {
1392                 _cleanup_free_ char *n = NULL;
1393                 int r;
1394
1395                 n = unit_name_mangle(*name);
1396                 if (!n)
1397                         return log_oom();
1398
1399                 r = bus_method_call_with_reply(
1400                                 bus,
1401                                 "org.freedesktop.systemd1",
1402                                 "/org/freedesktop/systemd1",
1403                                 "org.freedesktop.systemd1.Manager",
1404                                 "LoadUnit",
1405                                 NULL,
1406                                 NULL,
1407                                 DBUS_TYPE_STRING, &n,
1408                                 DBUS_TYPE_INVALID);
1409                 if (r < 0)
1410                         return r;
1411         }
1412
1413         return 0;
1414 }
1415
1416 static int cancel_job(DBusConnection *bus, char **args) {
1417         char **name;
1418
1419         assert(args);
1420
1421         if (strv_length(args) <= 1)
1422                 return daemon_reload(bus, args);
1423
1424         STRV_FOREACH(name, args+1) {
1425                 uint32_t id;
1426                 int r;
1427
1428                 r = safe_atou32(*name, &id);
1429                 if (r < 0) {
1430                         log_error("Failed to parse job id: %s", strerror(-r));
1431                         return r;
1432                 }
1433
1434                 r = bus_method_call_with_reply(
1435                                 bus,
1436                                 "org.freedesktop.systemd1",
1437                                 "/org/freedesktop/systemd1",
1438                                 "org.freedesktop.systemd1.Manager",
1439                                 "CancelJob",
1440                                 NULL,
1441                                 NULL,
1442                                 DBUS_TYPE_UINT32, &id,
1443                                 DBUS_TYPE_INVALID);
1444                 if (r < 0)
1445                         return r;
1446         }
1447
1448         return 0;
1449 }
1450
1451 static bool need_daemon_reload(DBusConnection *bus, const char *unit) {
1452         _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
1453         dbus_bool_t b = FALSE;
1454         DBusMessageIter iter, sub;
1455         const char
1456                 *interface = "org.freedesktop.systemd1.Unit",
1457                 *property = "NeedDaemonReload",
1458                 *path;
1459         _cleanup_free_ char *n = NULL;
1460         int r;
1461
1462         /* We ignore all errors here, since this is used to show a warning only */
1463
1464         n = unit_name_mangle(unit);
1465         if (!n)
1466                 return log_oom();
1467
1468         r = bus_method_call_with_reply(
1469                         bus,
1470                         "org.freedesktop.systemd1",
1471                         "/org/freedesktop/systemd1",
1472                         "org.freedesktop.systemd1.Manager",
1473                         "GetUnit",
1474                         &reply,
1475                         NULL,
1476                         DBUS_TYPE_STRING, &n,
1477                         DBUS_TYPE_INVALID);
1478         if (r < 0)
1479                 return r;
1480
1481         if (!dbus_message_get_args(reply, NULL,
1482                                    DBUS_TYPE_OBJECT_PATH, &path,
1483                                    DBUS_TYPE_INVALID))
1484                 return -EIO;
1485
1486         dbus_message_unref(reply);
1487         reply = NULL;
1488
1489         r = bus_method_call_with_reply(
1490                         bus,
1491                         "org.freedesktop.systemd1",
1492                         path,
1493                         "org.freedesktop.DBus.Properties",
1494                         "Get",
1495                         &reply,
1496                         NULL,
1497                         DBUS_TYPE_STRING, &interface,
1498                         DBUS_TYPE_STRING, &property,
1499                         DBUS_TYPE_INVALID);
1500         if (r < 0)
1501                 return r;
1502
1503         if (!dbus_message_iter_init(reply, &iter) ||
1504             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT)
1505                 return -EIO;
1506
1507         dbus_message_iter_recurse(&iter, &sub);
1508         if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_BOOLEAN)
1509                 return -EIO;
1510
1511         dbus_message_iter_get_basic(&sub, &b);
1512         return b;
1513 }
1514
1515 typedef struct WaitData {
1516         Set *set;
1517
1518         char *name;
1519         char *result;
1520 } WaitData;
1521
1522 static DBusHandlerResult wait_filter(DBusConnection *connection, DBusMessage *message, void *data) {
1523         _cleanup_dbus_error_free_ DBusError error;
1524         WaitData *d = data;
1525
1526         dbus_error_init(&error);
1527
1528         assert(connection);
1529         assert(message);
1530         assert(d);
1531
1532         log_debug("Got D-Bus request: %s.%s() on %s",
1533                   dbus_message_get_interface(message),
1534                   dbus_message_get_member(message),
1535                   dbus_message_get_path(message));
1536
1537         if (dbus_message_is_signal(message, DBUS_INTERFACE_LOCAL, "Disconnected")) {
1538                 log_error("Warning! D-Bus connection terminated.");
1539                 dbus_connection_close(connection);
1540
1541         } else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "JobRemoved")) {
1542                 uint32_t id;
1543                 const char *path, *result, *unit;
1544
1545                 if (dbus_message_get_args(message, &error,
1546                                           DBUS_TYPE_UINT32, &id,
1547                                           DBUS_TYPE_OBJECT_PATH, &path,
1548                                           DBUS_TYPE_STRING, &unit,
1549                                           DBUS_TYPE_STRING, &result,
1550                                           DBUS_TYPE_INVALID)) {
1551
1552                         free(set_remove(d->set, (char*) path));
1553
1554                         if (!isempty(result))
1555                                 d->result = strdup(result);
1556
1557                         if (!isempty(unit))
1558                                 d->name = strdup(unit);
1559
1560                         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1561                 }
1562 #ifndef LEGACY
1563                 dbus_error_free(&error);
1564                 if (dbus_message_get_args(message, &error,
1565                                           DBUS_TYPE_UINT32, &id,
1566                                           DBUS_TYPE_OBJECT_PATH, &path,
1567                                           DBUS_TYPE_STRING, &result,
1568                                           DBUS_TYPE_INVALID)) {
1569                         /* Compatibility with older systemd versions <
1570                          * 183 during upgrades. This should be dropped
1571                          * one day. */
1572                         free(set_remove(d->set, (char*) path));
1573
1574                         if (*result)
1575                                 d->result = strdup(result);
1576
1577                         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1578                 }
1579 #endif
1580
1581                 log_error("Failed to parse message: %s", bus_error_message(&error));
1582         }
1583
1584         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1585 }
1586
1587 static int enable_wait_for_jobs(DBusConnection *bus) {
1588         DBusError error;
1589
1590         assert(bus);
1591
1592         if (private_bus)
1593                 return 0;
1594
1595         dbus_error_init(&error);
1596         dbus_bus_add_match(bus,
1597                            "type='signal',"
1598                            "sender='org.freedesktop.systemd1',"
1599                            "interface='org.freedesktop.systemd1.Manager',"
1600                            "member='JobRemoved',"
1601                            "path='/org/freedesktop/systemd1'",
1602                            &error);
1603
1604         if (dbus_error_is_set(&error)) {
1605                 log_error("Failed to add match: %s", bus_error_message(&error));
1606                 dbus_error_free(&error);
1607                 return -EIO;
1608         }
1609
1610         /* This is slightly dirty, since we don't undo the match registrations. */
1611         return 0;
1612 }
1613
1614 static int wait_for_jobs(DBusConnection *bus, Set *s) {
1615         int r = 0;
1616         WaitData d = { .set = s };
1617
1618         assert(bus);
1619         assert(s);
1620
1621         if (!dbus_connection_add_filter(bus, wait_filter, &d, NULL))
1622                 return log_oom();
1623
1624         while (!set_isempty(s)) {
1625
1626                 if (!dbus_connection_read_write_dispatch(bus, -1)) {
1627                         log_error("Disconnected from bus.");
1628                         return -ECONNREFUSED;
1629                 }
1630
1631                 if (!d.result)
1632                         goto free_name;
1633
1634                 if (!arg_quiet) {
1635                         if (streq(d.result, "timeout"))
1636                                 log_error("Job for %s timed out.", strna(d.name));
1637                         else if (streq(d.result, "canceled"))
1638                                 log_error("Job for %s canceled.", strna(d.name));
1639                         else if (streq(d.result, "dependency"))
1640                                 log_error("A dependency job for %s failed. See 'journalctl -xn' for details.", strna(d.name));
1641                         else if (!streq(d.result, "done") && !streq(d.result, "skipped"))
1642                                 log_error("Job for %s failed. See 'systemctl status %s' and 'journalctl -xn' for details.", strna(d.name), strna(d.name));
1643                 }
1644
1645                 if (streq_ptr(d.result, "timeout"))
1646                         r = -ETIME;
1647                 else if (streq_ptr(d.result, "canceled"))
1648                         r = -ECANCELED;
1649                 else if (!streq_ptr(d.result, "done") && !streq_ptr(d.result, "skipped"))
1650                         r = -EIO;
1651
1652                 free(d.result);
1653                 d.result = NULL;
1654
1655         free_name:
1656                 free(d.name);
1657                 d.name = NULL;
1658         }
1659
1660         dbus_connection_remove_filter(bus, wait_filter, &d);
1661         return r;
1662 }
1663
1664 static int check_one_unit(DBusConnection *bus, const char *name, char **check_states, bool quiet) {
1665         _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
1666         _cleanup_free_ char *n = NULL;
1667         DBusMessageIter iter, sub;
1668         const char
1669                 *interface = "org.freedesktop.systemd1.Unit",
1670                 *property = "ActiveState";
1671         const char *state, *path;
1672         DBusError error;
1673         int r;
1674
1675         assert(name);
1676
1677         dbus_error_init(&error);
1678
1679         n = unit_name_mangle(name);
1680         if (!n)
1681                 return log_oom();
1682
1683         r = bus_method_call_with_reply (
1684                         bus,
1685                         "org.freedesktop.systemd1",
1686                         "/org/freedesktop/systemd1",
1687                         "org.freedesktop.systemd1.Manager",
1688                         "GetUnit",
1689                         &reply,
1690                         &error,
1691                         DBUS_TYPE_STRING, &n,
1692                         DBUS_TYPE_INVALID);
1693         if (r < 0) {
1694                 dbus_error_free(&error);
1695
1696                 if (!quiet)
1697                         puts("unknown");
1698                 return 0;
1699         }
1700
1701         if (!dbus_message_get_args(reply, NULL,
1702                                    DBUS_TYPE_OBJECT_PATH, &path,
1703                                    DBUS_TYPE_INVALID)) {
1704                 log_error("Failed to parse reply.");
1705                 return -EIO;
1706         }
1707
1708         dbus_message_unref(reply);
1709         reply = NULL;
1710
1711         r = bus_method_call_with_reply(
1712                         bus,
1713                         "org.freedesktop.systemd1",
1714                         path,
1715                         "org.freedesktop.DBus.Properties",
1716                         "Get",
1717                         &reply,
1718                         NULL,
1719                         DBUS_TYPE_STRING, &interface,
1720                         DBUS_TYPE_STRING, &property,
1721                         DBUS_TYPE_INVALID);
1722         if (r < 0) {
1723                 if (!quiet)
1724                         puts("unknown");
1725                 return 0;
1726         }
1727
1728         if (!dbus_message_iter_init(reply, &iter) ||
1729             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT)  {
1730                 log_error("Failed to parse reply.");
1731                 return r;
1732         }
1733
1734         dbus_message_iter_recurse(&iter, &sub);
1735
1736         if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING)  {
1737                 log_error("Failed to parse reply.");
1738                 return r;
1739         }
1740
1741         dbus_message_iter_get_basic(&sub, &state);
1742
1743         if (!quiet)
1744                 puts(state);
1745
1746         return strv_find(check_states, state) ? 1 : 0;
1747 }
1748
1749 static void check_triggering_units(
1750                 DBusConnection *bus,
1751                 const char *unit_name) {
1752
1753         _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
1754         DBusMessageIter iter, sub;
1755         const char *interface = "org.freedesktop.systemd1.Unit",
1756                    *load_state_property = "LoadState",
1757                    *triggered_by_property = "TriggeredBy",
1758                    *state;
1759         _cleanup_free_ char *unit_path = NULL, *n = NULL;
1760         bool print_warning_label = true;
1761         int r;
1762
1763         n = unit_name_mangle(unit_name);
1764         if (!n) {
1765                 log_oom();
1766                 return;
1767         }
1768
1769         unit_path = unit_dbus_path_from_name(n);
1770         if (!unit_path) {
1771                 log_oom();
1772                 return;
1773         }
1774
1775         r = bus_method_call_with_reply(
1776                         bus,
1777                         "org.freedesktop.systemd1",
1778                         unit_path,
1779                         "org.freedesktop.DBus.Properties",
1780                         "Get",
1781                         &reply,
1782                         NULL,
1783                         DBUS_TYPE_STRING, &interface,
1784                         DBUS_TYPE_STRING, &load_state_property,
1785                         DBUS_TYPE_INVALID);
1786         if (r < 0)
1787                 return;
1788
1789         if (!dbus_message_iter_init(reply, &iter) ||
1790             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
1791                 log_error("Failed to parse reply.");
1792                 return;
1793         }
1794
1795         dbus_message_iter_recurse(&iter, &sub);
1796
1797         if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING)  {
1798             log_error("Failed to parse reply.");
1799             return;
1800         }
1801
1802         dbus_message_iter_get_basic(&sub, &state);
1803
1804         if (streq(state, "masked"))
1805             return;
1806
1807         dbus_message_unref(reply);
1808         reply = NULL;
1809
1810         r = bus_method_call_with_reply(
1811                         bus,
1812                         "org.freedesktop.systemd1",
1813                         unit_path,
1814                         "org.freedesktop.DBus.Properties",
1815                         "Get",
1816                         &reply,
1817                         NULL,
1818                         DBUS_TYPE_STRING, &interface,
1819                         DBUS_TYPE_STRING, &triggered_by_property,
1820                         DBUS_TYPE_INVALID);
1821         if (r < 0)
1822                 return;
1823
1824         if (!dbus_message_iter_init(reply, &iter) ||
1825             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT) {
1826                 log_error("Failed to parse reply.");
1827                 return;
1828         }
1829
1830         dbus_message_iter_recurse(&iter, &sub);
1831         dbus_message_iter_recurse(&sub, &iter);
1832         sub = iter;
1833
1834         while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
1835                 const char * const check_states[] = {
1836                         "active",
1837                         "reloading",
1838                         NULL
1839                 };
1840                 const char *service_trigger;
1841
1842                 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING) {
1843                         log_error("Failed to parse reply.");
1844                         return;
1845                 }
1846
1847                 dbus_message_iter_get_basic(&sub, &service_trigger);
1848
1849                 r = check_one_unit(bus, service_trigger, (char**) check_states, true);
1850                 if (r < 0)
1851                         return;
1852                 if (r > 0) {
1853                         if (print_warning_label) {
1854                                 log_warning("Warning: Stopping %s, but it can still be activated by:", unit_name);
1855                                 print_warning_label = false;
1856                         }
1857
1858                         log_warning("  %s", service_trigger);
1859                 }
1860
1861                 dbus_message_iter_next(&sub);
1862         }
1863 }
1864
1865 static int start_unit_one(
1866                 DBusConnection *bus,
1867                 const char *method,
1868                 const char *name,
1869                 const char *mode,
1870                 DBusError *error,
1871                 Set *s) {
1872
1873         _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
1874         _cleanup_free_ char *n;
1875         const char *path;
1876         int r;
1877
1878         assert(method);
1879         assert(name);
1880         assert(mode);
1881         assert(error);
1882
1883         n = unit_name_mangle(name);
1884         if (!n)
1885                 return log_oom();
1886
1887         r = bus_method_call_with_reply(
1888                         bus,
1889                         "org.freedesktop.systemd1",
1890                         "/org/freedesktop/systemd1",
1891                         "org.freedesktop.systemd1.Manager",
1892                         method,
1893                         &reply,
1894                         error,
1895                         DBUS_TYPE_STRING, &n,
1896                         DBUS_TYPE_STRING, &mode,
1897                         DBUS_TYPE_INVALID);
1898         if (r) {
1899                 if (r == -ENOENT && arg_action != ACTION_SYSTEMCTL)
1900                         /* There's always a fallback possible for
1901                          * legacy actions. */
1902                         r = -EADDRNOTAVAIL;
1903                 else
1904                         log_error("Failed to issue method call: %s", bus_error_message(error));
1905
1906                 return r;
1907         }
1908
1909         if (!dbus_message_get_args(reply, error,
1910                                    DBUS_TYPE_OBJECT_PATH, &path,
1911                                    DBUS_TYPE_INVALID)) {
1912                 log_error("Failed to parse reply: %s", bus_error_message(error));
1913                 return -EIO;
1914         }
1915
1916         if (need_daemon_reload(bus, n))
1917                 log_warning("Warning: Unit file of %s changed on disk, 'systemctl %sdaemon-reload' recommended.",
1918                             n, arg_scope == UNIT_FILE_SYSTEM ? "" : "--user ");
1919
1920         if (s) {
1921                 char *p;
1922
1923                 p = strdup(path);
1924                 if (!p)
1925                         return log_oom();
1926
1927                 r = set_consume(s, p);
1928                 if (r < 0) {
1929                         log_error("Failed to add path to set.");
1930                         return r;
1931                 }
1932         }
1933
1934         return 0;
1935 }
1936
1937 static const struct {
1938         const char *target;
1939         const char *verb;
1940         const char *mode;
1941 } action_table[_ACTION_MAX] = {
1942         [ACTION_HALT]         = { SPECIAL_HALT_TARGET,         "halt",         "replace-irreversibly" },
1943         [ACTION_POWEROFF]     = { SPECIAL_POWEROFF_TARGET,     "poweroff",     "replace-irreversibly" },
1944         [ACTION_REBOOT]       = { SPECIAL_REBOOT_TARGET,       "reboot",       "replace-irreversibly" },
1945         [ACTION_KEXEC]        = { SPECIAL_KEXEC_TARGET,        "kexec",        "replace-irreversibly" },
1946         [ACTION_RUNLEVEL2]    = { SPECIAL_RUNLEVEL2_TARGET,    NULL,           "isolate" },
1947         [ACTION_RUNLEVEL3]    = { SPECIAL_RUNLEVEL3_TARGET,    NULL,           "isolate" },
1948         [ACTION_RUNLEVEL4]    = { SPECIAL_RUNLEVEL4_TARGET,    NULL,           "isolate" },
1949         [ACTION_RUNLEVEL5]    = { SPECIAL_RUNLEVEL5_TARGET,    NULL,           "isolate" },
1950         [ACTION_RESCUE]       = { SPECIAL_RESCUE_TARGET,       "rescue",       "isolate" },
1951         [ACTION_EMERGENCY]    = { SPECIAL_EMERGENCY_TARGET,    "emergency",    "isolate" },
1952         [ACTION_DEFAULT]      = { SPECIAL_DEFAULT_TARGET,      "default",      "isolate" },
1953         [ACTION_EXIT]         = { SPECIAL_EXIT_TARGET,         "exit",         "replace-irreversibly" },
1954         [ACTION_SUSPEND]      = { SPECIAL_SUSPEND_TARGET,      "suspend",      "replace-irreversibly" },
1955         [ACTION_HIBERNATE]    = { SPECIAL_HIBERNATE_TARGET,    "hibernate",    "replace-irreversibly" },
1956         [ACTION_HYBRID_SLEEP] = { SPECIAL_HYBRID_SLEEP_TARGET, "hybrid-sleep", "replace-irreversibly" },
1957 };
1958
1959 static enum action verb_to_action(const char *verb) {
1960         enum action i;
1961
1962         for (i = ACTION_INVALID; i < _ACTION_MAX; i++)
1963                 if (action_table[i].verb && streq(verb, action_table[i].verb))
1964                         return i;
1965         return ACTION_INVALID;
1966 }
1967
1968 static int start_unit(DBusConnection *bus, char **args) {
1969
1970         int r, ret = 0;
1971         const char *method, *mode, *one_name;
1972         _cleanup_set_free_free_ Set *s = NULL;
1973         _cleanup_dbus_error_free_ DBusError error;
1974         char **name;
1975
1976         dbus_error_init(&error);
1977
1978         assert(bus);
1979
1980         ask_password_agent_open_if_enabled();
1981
1982         if (arg_action == ACTION_SYSTEMCTL) {
1983                 enum action action;
1984                 method =
1985                         streq(args[0], "stop") ||
1986                         streq(args[0], "condstop")              ? "StopUnit" :
1987                         streq(args[0], "reload")                ? "ReloadUnit" :
1988                         streq(args[0], "restart")               ? "RestartUnit" :
1989
1990                         streq(args[0], "try-restart")           ||
1991                         streq(args[0], "condrestart")           ? "TryRestartUnit" :
1992
1993                         streq(args[0], "reload-or-restart")     ? "ReloadOrRestartUnit" :
1994
1995                         streq(args[0], "reload-or-try-restart") ||
1996                         streq(args[0], "condreload") ||
1997
1998                         streq(args[0], "force-reload")          ? "ReloadOrTryRestartUnit" :
1999                                                                   "StartUnit";
2000                 action = verb_to_action(args[0]);
2001
2002                 mode = streq(args[0], "isolate") ? "isolate" :
2003                        action_table[action].mode ?: arg_job_mode;
2004
2005                 one_name = action_table[action].target;
2006
2007         } else {
2008                 assert(arg_action < ELEMENTSOF(action_table));
2009                 assert(action_table[arg_action].target);
2010
2011                 method = "StartUnit";
2012
2013                 mode = action_table[arg_action].mode;
2014                 one_name = action_table[arg_action].target;
2015         }
2016
2017         if (!arg_no_block) {
2018                 ret = enable_wait_for_jobs(bus);
2019                 if (ret < 0) {
2020                         log_error("Could not watch jobs: %s", strerror(-ret));
2021                         return ret;
2022                 }
2023
2024                 s = set_new(string_hash_func, string_compare_func);
2025                 if (!s)
2026                         return log_oom();
2027         }
2028
2029         if (one_name) {
2030                 ret = start_unit_one(bus, method, one_name, mode, &error, s);
2031                 if (ret < 0)
2032                         ret = translate_bus_error_to_exit_status(ret, &error);
2033         } else {
2034                 STRV_FOREACH(name, args+1) {
2035                         r = start_unit_one(bus, method, *name, mode, &error, s);
2036                         if (r < 0) {
2037                                 ret = translate_bus_error_to_exit_status(r, &error);
2038                                 dbus_error_free(&error);
2039                         }
2040                 }
2041         }
2042
2043         if (!arg_no_block) {
2044                 r = wait_for_jobs(bus, s);
2045                 if (r < 0)
2046                         return r;
2047
2048                 /* When stopping units, warn if they can still be triggered by
2049                  * another active unit (socket, path, timer) */
2050                 if (!arg_quiet && streq(method, "StopUnit")) {
2051                         if (one_name)
2052                                 check_triggering_units(bus, one_name);
2053                         else
2054                                 STRV_FOREACH(name, args+1)
2055                                         check_triggering_units(bus, *name);
2056                 }
2057         }
2058
2059         return ret;
2060 }
2061
2062 /* Ask systemd-logind, which might grant access to unprivileged users
2063  * through PolicyKit */
2064 static int reboot_with_logind(DBusConnection *bus, enum action a) {
2065 #ifdef HAVE_LOGIND
2066         const char *method;
2067         dbus_bool_t interactive = true;
2068
2069         if (!bus)
2070                 return -EIO;
2071
2072         polkit_agent_open_if_enabled();
2073
2074         switch (a) {
2075
2076         case ACTION_REBOOT:
2077                 method = "Reboot";
2078                 break;
2079
2080         case ACTION_POWEROFF:
2081                 method = "PowerOff";
2082                 break;
2083
2084         case ACTION_SUSPEND:
2085                 method = "Suspend";
2086                 break;
2087
2088         case ACTION_HIBERNATE:
2089                 method = "Hibernate";
2090                 break;
2091
2092         case ACTION_HYBRID_SLEEP:
2093                 method = "HybridSleep";
2094                 break;
2095
2096         default:
2097                 return -EINVAL;
2098         }
2099
2100         return bus_method_call_with_reply(
2101                         bus,
2102                         "org.freedesktop.login1",
2103                         "/org/freedesktop/login1",
2104                         "org.freedesktop.login1.Manager",
2105                         method,
2106                         NULL,
2107                         NULL,
2108                         DBUS_TYPE_BOOLEAN, &interactive,
2109                         DBUS_TYPE_INVALID);
2110 #else
2111         return -ENOSYS;
2112 #endif
2113 }
2114
2115 static int check_inhibitors(DBusConnection *bus, enum action a) {
2116 #ifdef HAVE_LOGIND
2117         _cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
2118         DBusMessageIter iter, sub, sub2;
2119         int r;
2120         unsigned c = 0;
2121         _cleanup_strv_free_ char **sessions = NULL;
2122         char **s;
2123
2124         if (!bus)
2125                 return 0;
2126
2127         if (arg_ignore_inhibitors || arg_force > 0)
2128                 return 0;
2129
2130         if (arg_when > 0)
2131                 return 0;
2132
2133         if (geteuid() == 0)
2134                 return 0;
2135
2136         if (!on_tty())
2137                 return 0;
2138
2139         r = bus_method_call_with_reply(
2140                         bus,
2141                         "org.freedesktop.login1",
2142                         "/org/freedesktop/login1",
2143                         "org.freedesktop.login1.Manager",
2144                         "ListInhibitors",
2145                         &reply,
2146                         NULL,
2147                         DBUS_TYPE_INVALID);
2148         if (r < 0)
2149                 /* If logind is not around, then there are no inhibitors... */
2150                 return 0;
2151
2152         if (!dbus_message_iter_init(reply, &iter) ||
2153             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
2154             dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT) {
2155                 log_error("Failed to parse reply.");
2156                 return -EIO;
2157         }
2158
2159         dbus_message_iter_recurse(&iter, &sub);
2160         while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
2161                 const char *what, *who, *why, *mode;
2162                 uint32_t uid, pid;
2163                 _cleanup_strv_free_ char **sv = NULL;
2164                 _cleanup_free_ char *comm = NULL, *user = NULL;
2165
2166                 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
2167                         log_error("Failed to parse reply.");
2168                         return -EIO;
2169                 }
2170
2171                 dbus_message_iter_recurse(&sub, &sub2);
2172
2173                 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &what, true) < 0 ||
2174                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &who, true) < 0 ||
2175                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &why, true) < 0 ||
2176                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &mode, true) < 0 ||
2177                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &uid, true) < 0 ||
2178                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &pid, false) < 0) {
2179                         log_error("Failed to parse reply.");
2180                         return -EIO;
2181                 }
2182
2183                 if (!streq(mode, "block"))
2184                         goto next;
2185
2186                 sv = strv_split(what, ":");
2187                 if (!sv)
2188                         return log_oom();
2189
2190                 if (!strv_contains(sv,
2191                                   a == ACTION_HALT ||
2192                                   a == ACTION_POWEROFF ||
2193                                   a == ACTION_REBOOT ||
2194                                   a == ACTION_KEXEC ? "shutdown" : "sleep"))
2195                         goto next;
2196
2197                 get_process_comm(pid, &comm);
2198                 user = uid_to_name(uid);
2199                 log_warning("Operation inhibited by \"%s\" (PID %lu \"%s\", user %s), reason is \"%s\".",
2200                             who, (unsigned long) pid, strna(comm), strna(user), why);
2201                 c++;
2202
2203         next:
2204                 dbus_message_iter_next(&sub);
2205         }
2206
2207         dbus_message_iter_recurse(&iter, &sub);
2208
2209         /* Check for current sessions */
2210         sd_get_sessions(&sessions);
2211         STRV_FOREACH(s, sessions) {
2212                 uid_t uid;
2213                 _cleanup_free_ char *type = NULL, *tty = NULL, *seat = NULL, *user = NULL, *service = NULL, *class = NULL;
2214
2215                 if (sd_session_get_uid(*s, &uid) < 0 || uid == getuid())
2216                         continue;
2217
2218                 if (sd_session_get_class(*s, &class) < 0 || !streq(class, "user"))
2219                         continue;
2220
2221                 if (sd_session_get_type(*s, &type) < 0 || (!streq(type, "x11") && !streq(type, "tty")))
2222                         continue;
2223
2224                 sd_session_get_tty(*s, &tty);
2225                 sd_session_get_seat(*s, &seat);
2226                 sd_session_get_service(*s, &service);
2227                 user = uid_to_name(uid);
2228
2229                 log_warning("User %s is logged in on %s.", strna(user), isempty(tty) ? (isempty(seat) ? strna(service) : seat) : tty);
2230                 c++;
2231         }
2232
2233         if (c <= 0)
2234                 return 0;
2235
2236         log_error("Please retry operation after closing inhibitors and logging out other users.\nAlternatively, ignore inhibitors and users with 'systemctl %s -i'.",
2237                   action_table[a].verb);
2238
2239         return -EPERM;
2240 #else
2241         return 0;
2242 #endif
2243 }
2244
2245 static int start_special(DBusConnection *bus, char **args) {
2246         enum action a;
2247         int r;
2248
2249         assert(args);
2250
2251         a = verb_to_action(args[0]);
2252
2253         r = check_inhibitors(bus, a);
2254         if (r < 0)
2255                 return r;
2256
2257         if (arg_force >= 2 && geteuid() != 0) {
2258                 log_error("Must be root.");
2259                 return -EPERM;
2260         }
2261
2262         if (arg_force >= 2 &&
2263             (a == ACTION_HALT ||
2264              a == ACTION_POWEROFF ||
2265              a == ACTION_REBOOT))
2266                 halt_now(a);
2267
2268         if (arg_force >= 1 &&
2269             (a == ACTION_HALT ||
2270              a == ACTION_POWEROFF ||
2271              a == ACTION_REBOOT ||
2272              a == ACTION_KEXEC ||
2273              a == ACTION_EXIT))
2274                 return daemon_reload(bus, args);
2275
2276         /* first try logind, to allow authentication with polkit */
2277         if (geteuid() != 0 &&
2278             (a == ACTION_POWEROFF ||
2279              a == ACTION_REBOOT ||
2280              a == ACTION_SUSPEND ||
2281              a == ACTION_HIBERNATE ||
2282              a == ACTION_HYBRID_SLEEP)) {
2283                 r = reboot_with_logind(bus, a);
2284                 if (r >= 0)
2285                         return r;
2286         }
2287
2288         r = start_unit(bus, args);
2289         if (r == EXIT_SUCCESS)
2290                 warn_wall(a);
2291
2292         return r;
2293 }
2294
2295 static int check_unit_active(DBusConnection *bus, char **args) {
2296         const char * const check_states[] = {
2297                 "active",
2298                 "reloading",
2299                 NULL
2300         };
2301
2302         char **name;
2303         int r = 3; /* According to LSB: "program is not running" */
2304
2305         assert(bus);
2306         assert(args);
2307
2308         STRV_FOREACH(name, args+1) {
2309                 int state;
2310
2311                 state = check_one_unit(bus, *name, (char**) check_states, arg_quiet);
2312                 if (state < 0)
2313                         return state;
2314                 if (state > 0)
2315                         r = 0;
2316         }
2317
2318         return r;
2319 }
2320
2321 static int check_unit_failed(DBusConnection *bus, char **args) {
2322         const char * const check_states[] = {
2323                 "failed",
2324                 NULL
2325         };
2326
2327         char **name;
2328         int r = 1;
2329
2330         assert(bus);
2331         assert(args);
2332
2333         STRV_FOREACH(name, args+1) {
2334                 int state;
2335
2336                 state = check_one_unit(bus, *name, (char**) check_states, arg_quiet);
2337                 if (state < 0)
2338                         return state;
2339                 if (state > 0)
2340                         r = 0;
2341         }
2342
2343         return r;
2344 }
2345
2346 static int kill_unit(DBusConnection *bus, char **args) {
2347         char **name;
2348         int r = 0;
2349
2350         assert(bus);
2351         assert(args);
2352
2353         if (!arg_kill_who)
2354                 arg_kill_who = "all";
2355
2356         STRV_FOREACH(name, args+1) {
2357                 _cleanup_free_ char *n = NULL;
2358
2359                 n = unit_name_mangle(*name);
2360                 if (!n)
2361                         return log_oom();
2362
2363                 r = bus_method_call_with_reply(
2364                                 bus,
2365                                 "org.freedesktop.systemd1",
2366                                 "/org/freedesktop/systemd1",
2367                                 "org.freedesktop.systemd1.Manager",
2368                                 "KillUnit",
2369                                 NULL,
2370                                 NULL,
2371                                 DBUS_TYPE_STRING, &n,
2372                                 DBUS_TYPE_STRING, &arg_kill_who,
2373                                 DBUS_TYPE_INT32, &arg_signal,
2374                                 DBUS_TYPE_INVALID);
2375                 if (r < 0)
2376                         return r;
2377         }
2378         return 0;
2379 }
2380
2381 typedef struct ExecStatusInfo {
2382         char *name;
2383
2384         char *path;
2385         char **argv;
2386
2387         bool ignore;
2388
2389         usec_t start_timestamp;
2390         usec_t exit_timestamp;
2391         pid_t pid;
2392         int code;
2393         int status;
2394
2395         LIST_FIELDS(struct ExecStatusInfo, exec);
2396 } ExecStatusInfo;
2397
2398 static void exec_status_info_free(ExecStatusInfo *i) {
2399         assert(i);
2400
2401         free(i->name);
2402         free(i->path);
2403         strv_free(i->argv);
2404         free(i);
2405 }
2406
2407 static int exec_status_info_deserialize(DBusMessageIter *sub, ExecStatusInfo *i) {
2408         uint64_t start_timestamp, exit_timestamp, start_timestamp_monotonic, exit_timestamp_monotonic;
2409         DBusMessageIter sub2, sub3;
2410         const char*path;
2411         unsigned n;
2412         uint32_t pid;
2413         int32_t code, status;
2414         dbus_bool_t ignore;
2415
2416         assert(i);
2417         assert(i);
2418
2419         if (dbus_message_iter_get_arg_type(sub) != DBUS_TYPE_STRUCT)
2420                 return -EIO;
2421
2422         dbus_message_iter_recurse(sub, &sub2);
2423
2424         if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, true) < 0)
2425                 return -EIO;
2426
2427         i->path = strdup(path);
2428         if (!i->path)
2429                 return -ENOMEM;
2430
2431         if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_ARRAY ||
2432             dbus_message_iter_get_element_type(&sub2) != DBUS_TYPE_STRING)
2433                 return -EIO;
2434
2435         n = 0;
2436         dbus_message_iter_recurse(&sub2, &sub3);
2437         while (dbus_message_iter_get_arg_type(&sub3) != DBUS_TYPE_INVALID) {
2438                 assert(dbus_message_iter_get_arg_type(&sub3) == DBUS_TYPE_STRING);
2439                 dbus_message_iter_next(&sub3);
2440                 n++;
2441         }
2442
2443         i->argv = new0(char*, n+1);
2444         if (!i->argv)
2445                 return -ENOMEM;
2446
2447         n = 0;
2448         dbus_message_iter_recurse(&sub2, &sub3);
2449         while (dbus_message_iter_get_arg_type(&sub3) != DBUS_TYPE_INVALID) {
2450                 const char *s;
2451
2452                 assert(dbus_message_iter_get_arg_type(&sub3) == DBUS_TYPE_STRING);
2453                 dbus_message_iter_get_basic(&sub3, &s);
2454                 dbus_message_iter_next(&sub3);
2455
2456                 i->argv[n] = strdup(s);
2457                 if (!i->argv[n])
2458                         return -ENOMEM;
2459
2460                 n++;
2461         }
2462
2463         if (!dbus_message_iter_next(&sub2) ||
2464             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_BOOLEAN, &ignore, true) < 0 ||
2465             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &start_timestamp, true) < 0 ||
2466             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &start_timestamp_monotonic, true) < 0 ||
2467             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &exit_timestamp, true) < 0 ||
2468             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &exit_timestamp_monotonic, true) < 0 ||
2469             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &pid, true) < 0 ||
2470             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_INT32, &code, true) < 0 ||
2471             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_INT32, &status, false) < 0)
2472                 return -EIO;
2473
2474         i->ignore = ignore;
2475         i->start_timestamp = (usec_t) start_timestamp;
2476         i->exit_timestamp = (usec_t) exit_timestamp;
2477         i->pid = (pid_t) pid;
2478         i->code = code;
2479         i->status = status;
2480
2481         return 0;
2482 }
2483
2484 typedef struct UnitStatusInfo {
2485         const char *id;
2486         const char *load_state;
2487         const char *active_state;
2488         const char *sub_state;
2489         const char *unit_file_state;
2490
2491         const char *description;
2492         const char *following;
2493
2494         char **documentation;
2495
2496         const char *fragment_path;
2497         const char *source_path;
2498         const char *control_group;
2499
2500         char **dropin_paths;
2501
2502         const char *load_error;
2503         const char *result;
2504
2505         usec_t inactive_exit_timestamp;
2506         usec_t inactive_exit_timestamp_monotonic;
2507         usec_t active_enter_timestamp;
2508         usec_t active_exit_timestamp;
2509         usec_t inactive_enter_timestamp;
2510
2511         bool need_daemon_reload;
2512
2513         /* Service */
2514         pid_t main_pid;
2515         pid_t control_pid;
2516         const char *status_text;
2517         const char *pid_file;
2518         bool running:1;
2519
2520         usec_t start_timestamp;
2521         usec_t exit_timestamp;
2522
2523         int exit_code, exit_status;
2524
2525         usec_t condition_timestamp;
2526         bool condition_result;
2527
2528         /* Socket */
2529         unsigned n_accepted;
2530         unsigned n_connections;
2531         bool accept;
2532
2533         /* Pairs of type, path */
2534         char **listen;
2535
2536         /* Device */
2537         const char *sysfs_path;
2538
2539         /* Mount, Automount */
2540         const char *where;
2541
2542         /* Swap */
2543         const char *what;
2544
2545         LIST_HEAD(ExecStatusInfo, exec);
2546 } UnitStatusInfo;
2547
2548 static void print_status_info(UnitStatusInfo *i) {
2549         ExecStatusInfo *p;
2550         const char *on, *off, *ss;
2551         usec_t timestamp;
2552         char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], *s1;
2553         char since2[FORMAT_TIMESTAMP_MAX], *s2;
2554         const char *path;
2555         int flags =
2556                 arg_all * OUTPUT_SHOW_ALL |
2557                 (!on_tty() || pager_have()) * OUTPUT_FULL_WIDTH |
2558                 on_tty() * OUTPUT_COLOR |
2559                 !arg_quiet * OUTPUT_WARN_CUTOFF |
2560                 arg_full * OUTPUT_FULL_WIDTH;
2561         char **t, **t2;
2562
2563         assert(i);
2564
2565         /* This shows pretty information about a unit. See
2566          * print_property() for a low-level property printer */
2567
2568         printf("%s", strna(i->id));
2569
2570         if (i->description && !streq_ptr(i->id, i->description))
2571                 printf(" - %s", i->description);
2572
2573         printf("\n");
2574
2575         if (i->following)
2576                 printf("   Follow: unit currently follows state of %s\n", i->following);
2577
2578         if (streq_ptr(i->load_state, "error")) {
2579                 on = ansi_highlight_red(true);
2580                 off = ansi_highlight_red(false);
2581         } else
2582                 on = off = "";
2583
2584         path = i->source_path ? i->source_path : i->fragment_path;
2585
2586         if (i->load_error)
2587                 printf("   Loaded: %s%s%s (Reason: %s)\n",
2588                        on, strna(i->load_state), off, i->load_error);
2589         else if (path && i->unit_file_state)
2590                 printf("   Loaded: %s%s%s (%s; %s)\n",
2591                        on, strna(i->load_state), off, path, i->unit_file_state);
2592         else if (path)
2593                 printf("   Loaded: %s%s%s (%s)\n",
2594                        on, strna(i->load_state), off, path);
2595         else
2596                 printf("   Loaded: %s%s%s\n",
2597                        on, strna(i->load_state), off);
2598
2599         if (!strv_isempty(i->dropin_paths)) {
2600                 char ** dropin;
2601                 char * dir = NULL;
2602                 bool last = false;
2603
2604                 STRV_FOREACH(dropin, i->dropin_paths) {
2605                         if (! dir || last) {
2606                                 printf(dir ? "        " : "  Drop-In: ");
2607
2608                                 free(dir);
2609
2610                                 if (path_get_parent(*dropin, &dir) < 0) {
2611                                         log_oom();
2612                                         return;
2613                                 }
2614
2615                                 printf("%s\n           %s", dir,
2616                                        draw_special_char(DRAW_TREE_RIGHT));
2617                         }
2618
2619                         last = ! (*(dropin + 1) && startswith(*(dropin + 1), dir));
2620
2621                         printf("%s%s", path_get_file_name(*dropin), last ? "\n" : ", ");
2622                 }
2623
2624                 free(dir);
2625         }
2626
2627         ss = streq_ptr(i->active_state, i->sub_state) ? NULL : i->sub_state;
2628
2629         if (streq_ptr(i->active_state, "failed")) {
2630                 on = ansi_highlight_red(true);
2631                 off = ansi_highlight_red(false);
2632         } else if (streq_ptr(i->active_state, "active") || streq_ptr(i->active_state, "reloading")) {
2633                 on = ansi_highlight_green(true);
2634                 off = ansi_highlight_green(false);
2635         } else
2636                 on = off = "";
2637
2638         if (ss)
2639                 printf("   Active: %s%s (%s)%s",
2640                        on, strna(i->active_state), ss, off);
2641         else
2642                 printf("   Active: %s%s%s",
2643                        on, strna(i->active_state), off);
2644
2645         if (!isempty(i->result) && !streq(i->result, "success"))
2646                 printf(" (Result: %s)", i->result);
2647
2648         timestamp = (streq_ptr(i->active_state, "active")      ||
2649                      streq_ptr(i->active_state, "reloading"))   ? i->active_enter_timestamp :
2650                     (streq_ptr(i->active_state, "inactive")    ||
2651                      streq_ptr(i->active_state, "failed"))      ? i->inactive_enter_timestamp :
2652                     streq_ptr(i->active_state, "activating")    ? i->inactive_exit_timestamp :
2653                                                                   i->active_exit_timestamp;
2654
2655         s1 = format_timestamp_relative(since1, sizeof(since1), timestamp);
2656         s2 = format_timestamp(since2, sizeof(since2), timestamp);
2657
2658         if (s1)
2659                 printf(" since %s; %s\n", s2, s1);
2660         else if (s2)
2661                 printf(" since %s\n", s2);
2662         else
2663                 printf("\n");
2664
2665         if (!i->condition_result && i->condition_timestamp > 0) {
2666                 s1 = format_timestamp_relative(since1, sizeof(since1), i->condition_timestamp);
2667                 s2 = format_timestamp(since2, sizeof(since2), i->condition_timestamp);
2668
2669                 if (s1)
2670                         printf("          start condition failed at %s; %s\n", s2, s1);
2671                 else if (s2)
2672                         printf("          start condition failed at %s\n", s2);
2673         }
2674
2675         if (i->sysfs_path)
2676                 printf("   Device: %s\n", i->sysfs_path);
2677         if (i->where)
2678                 printf("    Where: %s\n", i->where);
2679         if (i->what)
2680                 printf("     What: %s\n", i->what);
2681
2682         STRV_FOREACH(t, i->documentation)
2683                 printf(" %*s %s\n", 9, t == i->documentation ? "Docs:" : "", *t);
2684
2685         STRV_FOREACH_PAIR(t, t2, i->listen)
2686                 printf(" %*s %s (%s)\n", 9, t == i->listen ? "Listen:" : "", *t2, *t);
2687
2688         if (i->accept)
2689                 printf(" Accepted: %u; Connected: %u\n", i->n_accepted, i->n_connections);
2690
2691         LIST_FOREACH(exec, p, i->exec) {
2692                 _cleanup_free_ char *argv = NULL;
2693                 bool good;
2694
2695                 /* Only show exited processes here */
2696                 if (p->code == 0)
2697                         continue;
2698
2699                 argv = strv_join(p->argv, " ");
2700                 printf("  Process: %u %s=%s ", p->pid, p->name, strna(argv));
2701
2702                 good = is_clean_exit_lsb(p->code, p->status, NULL);
2703                 if (!good) {
2704                         on = ansi_highlight_red(true);
2705                         off = ansi_highlight_red(false);
2706                 } else
2707                         on = off = "";
2708
2709                 printf("%s(code=%s, ", on, sigchld_code_to_string(p->code));
2710
2711                 if (p->code == CLD_EXITED) {
2712                         const char *c;
2713
2714                         printf("status=%i", p->status);
2715
2716                         c = exit_status_to_string(p->status, EXIT_STATUS_SYSTEMD);
2717                         if (c)
2718                                 printf("/%s", c);
2719
2720                 } else
2721                         printf("signal=%s", signal_to_string(p->status));
2722
2723                 printf(")%s\n", off);
2724
2725                 if (i->main_pid == p->pid &&
2726                     i->start_timestamp == p->start_timestamp &&
2727                     i->exit_timestamp == p->start_timestamp)
2728                         /* Let's not show this twice */
2729                         i->main_pid = 0;
2730
2731                 if (p->pid == i->control_pid)
2732                         i->control_pid = 0;
2733         }
2734
2735         if (i->main_pid > 0 || i->control_pid > 0) {
2736                 if (i->main_pid > 0) {
2737                         printf(" Main PID: %u", (unsigned) i->main_pid);
2738
2739                         if (i->running) {
2740                                 _cleanup_free_ char *comm = NULL;
2741                                 get_process_comm(i->main_pid, &comm);
2742                                 if (comm)
2743                                         printf(" (%s)", comm);
2744                         } else if (i->exit_code > 0) {
2745                                 printf(" (code=%s, ", sigchld_code_to_string(i->exit_code));
2746
2747                                 if (i->exit_code == CLD_EXITED) {
2748                                         const char *c;
2749
2750                                         printf("status=%i", i->exit_status);
2751
2752                                         c = exit_status_to_string(i->exit_status, EXIT_STATUS_SYSTEMD);
2753                                         if (c)
2754                                                 printf("/%s", c);
2755
2756                                 } else
2757                                         printf("signal=%s", signal_to_string(i->exit_status));
2758                                 printf(")");
2759                         }
2760
2761                         if (i->control_pid > 0)
2762                                 printf(";");
2763                 }
2764
2765                 if (i->control_pid > 0) {
2766                         _cleanup_free_ char *c = NULL;
2767
2768                         printf(" %8s: %u", i->main_pid ? "" : " Control", (unsigned) i->control_pid);
2769
2770                         get_process_comm(i->control_pid, &c);
2771                         if (c)
2772                                 printf(" (%s)", c);
2773                 }
2774
2775                 printf("\n");
2776         }
2777
2778         if (i->status_text)
2779                 printf("   Status: \"%s\"\n", i->status_text);
2780
2781         if (i->control_group &&
2782             (i->main_pid > 0 || i->control_pid > 0 || cg_is_empty_by_spec(i->control_group, false) == 0)) {
2783                 unsigned c;
2784
2785                 printf("   CGroup: %s\n", i->control_group);
2786
2787                 if (arg_transport != TRANSPORT_SSH) {
2788                         unsigned k = 0;
2789                         pid_t extra[2];
2790                         char prefix[] = "           ";
2791
2792                         c = columns();
2793                         if (c > sizeof(prefix) - 1)
2794                                 c -= sizeof(prefix) - 1;
2795                         else
2796                                 c = 0;
2797
2798                         if (i->main_pid > 0)
2799                                 extra[k++] = i->main_pid;
2800
2801                         if (i->control_pid > 0)
2802                                 extra[k++] = i->control_pid;
2803
2804                         show_cgroup_and_extra_by_spec(i->control_group, prefix,
2805                                                       c, false, extra, k, flags);
2806                 }
2807         }
2808
2809         if (i->id && arg_transport != TRANSPORT_SSH) {
2810                 printf("\n");
2811                 show_journal_by_unit(stdout,
2812                                      i->id,
2813                                      arg_output,
2814                                      0,
2815                                      i->inactive_exit_timestamp_monotonic,
2816                                      arg_lines,
2817                                      getuid(),
2818                                      flags,
2819                                      arg_scope == UNIT_FILE_SYSTEM);
2820         }
2821
2822         if (i->need_daemon_reload)
2823                 printf("\n%sWarning:%s Unit file changed on disk, 'systemctl %sdaemon-reload' recommended.\n",
2824                        ansi_highlight_red(true),
2825                        ansi_highlight_red(false),
2826                        arg_scope == UNIT_FILE_SYSTEM ? "" : "--user ");
2827 }
2828
2829 static void show_unit_help(UnitStatusInfo *i) {
2830         char **p;
2831
2832         assert(i);
2833
2834         if (!i->documentation) {
2835                 log_info("Documentation for %s not known.", i->id);
2836                 return;
2837         }
2838
2839         STRV_FOREACH(p, i->documentation) {
2840
2841                 if (startswith(*p, "man:")) {
2842                         size_t k;
2843                         char *e = NULL;
2844                         _cleanup_free_ char *page = NULL, *section = NULL;
2845                         const char *args[4] = { "man", NULL, NULL, NULL };
2846                         pid_t pid;
2847
2848                         k = strlen(*p);
2849
2850                         if ((*p)[k-1] == ')')
2851                                 e = strrchr(*p, '(');
2852
2853                         if (e) {
2854                                 page = strndup((*p) + 4, e - *p - 4);
2855                                 section = strndup(e + 1, *p + k - e - 2);
2856                                 if (!page || !section) {
2857                                         log_oom();
2858                                         return;
2859                                 }
2860
2861                                 args[1] = section;
2862                                 args[2] = page;
2863                         } else
2864                                 args[1] = *p + 4;
2865
2866                         pid = fork();
2867                         if (pid < 0) {
2868                                 log_error("Failed to fork: %m");
2869                                 continue;
2870                         }
2871
2872                         if (pid == 0) {
2873                                 /* Child */
2874                                 execvp(args[0], (char**) args);
2875                                 log_error("Failed to execute man: %m");
2876                                 _exit(EXIT_FAILURE);
2877                         }
2878
2879                         wait_for_terminate(pid, NULL);
2880                 } else
2881                         log_info("Can't show: %s", *p);
2882         }
2883 }
2884
2885 static int status_property(const char *name, DBusMessageIter *iter, UnitStatusInfo *i) {
2886
2887         assert(name);
2888         assert(iter);
2889         assert(i);
2890
2891         switch (dbus_message_iter_get_arg_type(iter)) {
2892
2893         case DBUS_TYPE_STRING: {
2894                 const char *s;
2895
2896                 dbus_message_iter_get_basic(iter, &s);
2897
2898                 if (!isempty(s)) {
2899                         if (streq(name, "Id"))
2900                                 i->id = s;
2901                         else if (streq(name, "LoadState"))
2902                                 i->load_state = s;
2903                         else if (streq(name, "ActiveState"))
2904                                 i->active_state = s;
2905                         else if (streq(name, "SubState"))
2906                                 i->sub_state = s;
2907                         else if (streq(name, "Description"))
2908                                 i->description = s;
2909                         else if (streq(name, "FragmentPath"))
2910                                 i->fragment_path = s;
2911                         else if (streq(name, "SourcePath"))
2912                                 i->source_path = s;
2913 #ifndef LEGACY
2914                         else if (streq(name, "DefaultControlGroup"))
2915                                 i->control_group = s;
2916 #endif
2917                         else if (streq(name, "ControlGroup"))
2918                                 i->control_group = s;
2919                         else if (streq(name, "StatusText"))
2920                                 i->status_text = s;
2921                         else if (streq(name, "PIDFile"))
2922                                 i->pid_file = s;
2923                         else if (streq(name, "SysFSPath"))
2924                                 i->sysfs_path = s;
2925                         else if (streq(name, "Where"))
2926                                 i->where = s;
2927                         else if (streq(name, "What"))
2928                                 i->what = s;
2929                         else if (streq(name, "Following"))
2930                                 i->following = s;
2931                         else if (streq(name, "UnitFileState"))
2932                                 i->unit_file_state = s;
2933                         else if (streq(name, "Result"))
2934                                 i->result = s;
2935                 }
2936
2937                 break;
2938         }
2939
2940         case DBUS_TYPE_BOOLEAN: {
2941                 dbus_bool_t b;
2942
2943                 dbus_message_iter_get_basic(iter, &b);
2944
2945                 if (streq(name, "Accept"))
2946                         i->accept = b;
2947                 else if (streq(name, "NeedDaemonReload"))
2948                         i->need_daemon_reload = b;
2949                 else if (streq(name, "ConditionResult"))
2950                         i->condition_result = b;
2951
2952                 break;
2953         }
2954
2955         case DBUS_TYPE_UINT32: {
2956                 uint32_t u;
2957
2958                 dbus_message_iter_get_basic(iter, &u);
2959
2960                 if (streq(name, "MainPID")) {
2961                         if (u > 0) {
2962                                 i->main_pid = (pid_t) u;
2963                                 i->running = true;
2964                         }
2965                 } else if (streq(name, "ControlPID"))
2966                         i->control_pid = (pid_t) u;
2967                 else if (streq(name, "ExecMainPID")) {
2968                         if (u > 0)
2969                                 i->main_pid = (pid_t) u;
2970                 } else if (streq(name, "NAccepted"))
2971                         i->n_accepted = u;
2972                 else if (streq(name, "NConnections"))
2973                         i->n_connections = u;
2974
2975                 break;
2976         }
2977
2978         case DBUS_TYPE_INT32: {
2979                 int32_t j;
2980
2981                 dbus_message_iter_get_basic(iter, &j);
2982
2983                 if (streq(name, "ExecMainCode"))
2984                         i->exit_code = (int) j;
2985                 else if (streq(name, "ExecMainStatus"))
2986                         i->exit_status = (int) j;
2987
2988                 break;
2989         }
2990
2991         case DBUS_TYPE_UINT64: {
2992                 uint64_t u;
2993
2994                 dbus_message_iter_get_basic(iter, &u);
2995
2996                 if (streq(name, "ExecMainStartTimestamp"))
2997                         i->start_timestamp = (usec_t) u;
2998                 else if (streq(name, "ExecMainExitTimestamp"))
2999                         i->exit_timestamp = (usec_t) u;
3000                 else if (streq(name, "ActiveEnterTimestamp"))
3001                         i->active_enter_timestamp = (usec_t) u;
3002                 else if (streq(name, "InactiveEnterTimestamp"))
3003                         i->inactive_enter_timestamp = (usec_t) u;
3004                 else if (streq(name, "InactiveExitTimestamp"))
3005                         i->inactive_exit_timestamp = (usec_t) u;
3006                 else if (streq(name, "InactiveExitTimestampMonotonic"))
3007                         i->inactive_exit_timestamp_monotonic = (usec_t) u;
3008                 else if (streq(name, "ActiveExitTimestamp"))
3009                         i->active_exit_timestamp = (usec_t) u;
3010                 else if (streq(name, "ConditionTimestamp"))
3011                         i->condition_timestamp = (usec_t) u;
3012
3013                 break;
3014         }
3015
3016         case DBUS_TYPE_ARRAY: {
3017
3018                 if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT &&
3019                     startswith(name, "Exec")) {
3020                         DBusMessageIter sub;
3021
3022                         dbus_message_iter_recurse(iter, &sub);
3023                         while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
3024                                 ExecStatusInfo *info;
3025                                 int r;
3026
3027                                 if (!(info = new0(ExecStatusInfo, 1)))
3028                                         return -ENOMEM;
3029
3030                                 if (!(info->name = strdup(name))) {
3031                                         free(info);
3032                                         return -ENOMEM;
3033                                 }
3034
3035                                 if ((r = exec_status_info_deserialize(&sub, info)) < 0) {
3036                                         free(info);
3037                                         return r;
3038                                 }
3039
3040                                 LIST_PREPEND(ExecStatusInfo, exec, i->exec, info);
3041
3042                                 dbus_message_iter_next(&sub);
3043                         }
3044
3045                 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Listen")) {
3046                         DBusMessageIter sub, sub2;
3047
3048                         dbus_message_iter_recurse(iter, &sub);
3049                         while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
3050                                 const char *type, *path;
3051
3052                                 dbus_message_iter_recurse(&sub, &sub2);
3053
3054                                 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) >= 0 &&
3055                                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, false) >= 0) {
3056                                         int r;
3057
3058                                         r = strv_extend(&i->listen, type);
3059                                         if (r < 0)
3060                                                 return r;
3061                                         r = strv_extend(&i->listen, path);
3062                                         if (r < 0)
3063                                                 return r;
3064                                 }
3065
3066                                 dbus_message_iter_next(&sub);
3067                         }
3068
3069                         return 0;
3070
3071                 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRING && streq(name, "DropInPaths")) {
3072                         int r = bus_parse_strv_iter(iter, &i->dropin_paths);
3073                         if (r < 0)
3074                                 return r;
3075
3076                 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRING &&
3077                            streq(name, "Documentation")) {
3078
3079                         DBusMessageIter sub;
3080
3081                         dbus_message_iter_recurse(iter, &sub);
3082                         while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING) {
3083                                 const char *s;
3084                                 int r;
3085