chiark / gitweb /
systemctl: print a nice error message if an unprivileged user calls systemctl reboot -ff
[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 <stdbool.h>
26 #include <string.h>
27 #include <errno.h>
28 #include <sys/ioctl.h>
29 #include <termios.h>
30 #include <unistd.h>
31 #include <fcntl.h>
32 #include <sys/socket.h>
33 #include <sys/stat.h>
34 #include <stddef.h>
35 #include <sys/prctl.h>
36 #include <dbus/dbus.h>
37
38 #include <systemd/sd-daemon.h>
39 #include <systemd/sd-shutdown.h>
40
41 #include "log.h"
42 #include "util.h"
43 #include "macro.h"
44 #include "set.h"
45 #include "utmp-wtmp.h"
46 #include "special.h"
47 #include "initreq.h"
48 #include "strv.h"
49 #include "dbus-common.h"
50 #include "cgroup-show.h"
51 #include "cgroup-util.h"
52 #include "list.h"
53 #include "path-lookup.h"
54 #include "conf-parser.h"
55 #include "exit-status.h"
56 #include "bus-errors.h"
57 #include "build.h"
58 #include "unit-name.h"
59 #include "pager.h"
60 #include "spawn-ask-password-agent.h"
61 #include "spawn-polkit-agent.h"
62 #include "install.h"
63 #include "logs-show.h"
64
65 static const char *arg_type = NULL;
66 static char **arg_property = NULL;
67 static bool arg_all = false;
68 static const char *arg_job_mode = "replace";
69 static UnitFileScope arg_scope = UNIT_FILE_SYSTEM;
70 static bool arg_no_block = false;
71 static bool arg_no_legend = false;
72 static bool arg_no_pager = false;
73 static bool arg_no_wtmp = false;
74 static bool arg_no_sync = false;
75 static bool arg_no_wall = false;
76 static bool arg_no_reload = false;
77 static bool arg_dry = false;
78 static bool arg_quiet = false;
79 static bool arg_full = false;
80 static int arg_force = 0;
81 static bool arg_ask_password = true;
82 static bool arg_failed = false;
83 static bool arg_runtime = false;
84 static char **arg_wall = NULL;
85 static const char *arg_kill_who = NULL;
86 static const char *arg_kill_mode = NULL;
87 static int arg_signal = SIGTERM;
88 static const char *arg_root = NULL;
89 static usec_t arg_when = 0;
90 static enum action {
91         ACTION_INVALID,
92         ACTION_SYSTEMCTL,
93         ACTION_HALT,
94         ACTION_POWEROFF,
95         ACTION_REBOOT,
96         ACTION_KEXEC,
97         ACTION_EXIT,
98         ACTION_RUNLEVEL2,
99         ACTION_RUNLEVEL3,
100         ACTION_RUNLEVEL4,
101         ACTION_RUNLEVEL5,
102         ACTION_RESCUE,
103         ACTION_EMERGENCY,
104         ACTION_DEFAULT,
105         ACTION_RELOAD,
106         ACTION_REEXEC,
107         ACTION_RUNLEVEL,
108         ACTION_CANCEL_SHUTDOWN,
109         _ACTION_MAX
110 } arg_action = ACTION_SYSTEMCTL;
111 static enum dot {
112         DOT_ALL,
113         DOT_ORDER,
114         DOT_REQUIRE
115 } arg_dot = DOT_ALL;
116 static enum transport {
117         TRANSPORT_NORMAL,
118         TRANSPORT_SSH,
119         TRANSPORT_POLKIT
120 } arg_transport = TRANSPORT_NORMAL;
121 static const char *arg_host = NULL;
122 static bool arg_follow = false;
123 static unsigned arg_lines = 10;
124 static OutputMode arg_output = OUTPUT_SHORT;
125
126 static bool private_bus = false;
127
128 static int daemon_reload(DBusConnection *bus, char **args);
129 static void halt_now(enum action a);
130
131 static bool on_tty(void) {
132         static int t = -1;
133
134         /* Note that this is invoked relatively early, before we start
135          * the pager. That means the value we return reflects whether
136          * we originally were started on a tty, not if we currently
137          * are. But this is intended, since we want colour and so on
138          * when run in our own pager. */
139
140         if (_unlikely_(t < 0))
141                 t = isatty(STDOUT_FILENO) > 0;
142
143         return t;
144 }
145
146 static void pager_open_if_enabled(void) {
147
148         /* Cache result before we open the pager */
149         on_tty();
150
151         if (arg_no_pager)
152                 return;
153
154         pager_open();
155 }
156
157 static void ask_password_agent_open_if_enabled(void) {
158
159         /* Open the password agent as a child process if necessary */
160
161         if (!arg_ask_password)
162                 return;
163
164         if (arg_scope != UNIT_FILE_SYSTEM)
165                 return;
166
167         ask_password_agent_open();
168 }
169
170 static void polkit_agent_open_if_enabled(void) {
171
172         /* Open the polkit agent as a child process if necessary */
173
174         if (!arg_ask_password)
175                 return;
176
177         if (arg_scope != UNIT_FILE_SYSTEM)
178                 return;
179
180         polkit_agent_open();
181 }
182
183 static const char *ansi_highlight_red(bool b) {
184
185         if (!on_tty())
186                 return "";
187
188         return b ? ANSI_HIGHLIGHT_RED_ON : ANSI_HIGHLIGHT_OFF;
189 }
190
191 static const char *ansi_highlight_green(bool b) {
192
193         if (!on_tty())
194                 return "";
195
196         return b ? ANSI_HIGHLIGHT_GREEN_ON : ANSI_HIGHLIGHT_OFF;
197 }
198
199 static bool error_is_no_service(const DBusError *error) {
200         assert(error);
201
202         if (!dbus_error_is_set(error))
203                 return false;
204
205         if (dbus_error_has_name(error, DBUS_ERROR_NAME_HAS_NO_OWNER))
206                 return true;
207
208         if (dbus_error_has_name(error, DBUS_ERROR_SERVICE_UNKNOWN))
209                 return true;
210
211         return startswith(error->name, "org.freedesktop.DBus.Error.Spawn.");
212 }
213
214 static int translate_bus_error_to_exit_status(int r, const DBusError *error) {
215         assert(error);
216
217         if (!dbus_error_is_set(error))
218                 return r;
219
220         if (dbus_error_has_name(error, DBUS_ERROR_ACCESS_DENIED) ||
221             dbus_error_has_name(error, BUS_ERROR_ONLY_BY_DEPENDENCY) ||
222             dbus_error_has_name(error, BUS_ERROR_NO_ISOLATION) ||
223             dbus_error_has_name(error, BUS_ERROR_TRANSACTION_IS_DESTRUCTIVE))
224                 return EXIT_NOPERMISSION;
225
226         if (dbus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT))
227                 return EXIT_NOTINSTALLED;
228
229         if (dbus_error_has_name(error, BUS_ERROR_JOB_TYPE_NOT_APPLICABLE) ||
230             dbus_error_has_name(error, BUS_ERROR_NOT_SUPPORTED))
231                 return EXIT_NOTIMPLEMENTED;
232
233         if (dbus_error_has_name(error, BUS_ERROR_LOAD_FAILED))
234                 return EXIT_NOTCONFIGURED;
235
236         if (r != 0)
237                 return r;
238
239         return EXIT_FAILURE;
240 }
241
242 static void warn_wall(enum action a) {
243         static const char *table[_ACTION_MAX] = {
244                 [ACTION_HALT]      = "The system is going down for system halt NOW!",
245                 [ACTION_REBOOT]    = "The system is going down for reboot NOW!",
246                 [ACTION_POWEROFF]  = "The system is going down for power-off NOW!",
247                 [ACTION_KEXEC]     = "The system is going down for kexec reboot NOW!",
248                 [ACTION_RESCUE]    = "The system is going down to rescue mode NOW!",
249                 [ACTION_EMERGENCY] = "The system is going down to emergency mode NOW!"
250         };
251
252         if (arg_no_wall)
253                 return;
254
255         if (arg_wall) {
256                 char *p;
257
258                 p = strv_join(arg_wall, " ");
259                 if (!p) {
260                         log_error("Failed to join strings.");
261                         return;
262                 }
263
264                 if (*p) {
265                         utmp_wall(p, NULL);
266                         free(p);
267                         return;
268                 }
269
270                 free(p);
271         }
272
273         if (!table[a])
274                 return;
275
276         utmp_wall(table[a], NULL);
277 }
278
279 static bool avoid_bus(void) {
280
281         if (running_in_chroot() > 0)
282                 return true;
283
284         if (sd_booted() <= 0)
285                 return true;
286
287         if (!isempty(arg_root))
288                 return true;
289
290         if (arg_scope == UNIT_FILE_GLOBAL)
291                 return true;
292
293         return false;
294 }
295
296 struct unit_info {
297         const char *id;
298         const char *description;
299         const char *load_state;
300         const char *active_state;
301         const char *sub_state;
302         const char *following;
303         const char *unit_path;
304         uint32_t job_id;
305         const char *job_type;
306         const char *job_path;
307 };
308
309 static int compare_unit_info(const void *a, const void *b) {
310         const char *d1, *d2;
311         const struct unit_info *u = a, *v = b;
312
313         d1 = strrchr(u->id, '.');
314         d2 = strrchr(v->id, '.');
315
316         if (d1 && d2) {
317                 int r;
318
319                 if ((r = strcasecmp(d1, d2)) != 0)
320                         return r;
321         }
322
323         return strcasecmp(u->id, v->id);
324 }
325
326 static bool output_show_unit(const struct unit_info *u) {
327         const char *dot;
328
329         if (arg_failed)
330                 return streq(u->active_state, "failed");
331
332         return (!arg_type || ((dot = strrchr(u->id, '.')) &&
333                               streq(dot+1, arg_type))) &&
334                 (arg_all || !(streq(u->active_state, "inactive") || u->following[0]) || u->job_id > 0);
335 }
336
337 static void output_units_list(const struct unit_info *unit_infos, unsigned c) {
338         unsigned id_len, max_id_len, active_len, sub_len, job_len, desc_len, n_shown = 0;
339         const struct unit_info *u;
340
341         max_id_len = sizeof("UNIT")-1;
342         active_len = sizeof("ACTIVE")-1;
343         sub_len = sizeof("SUB")-1;
344         job_len = sizeof("JOB")-1;
345         desc_len = 0;
346
347         for (u = unit_infos; u < unit_infos + c; u++) {
348                 if (!output_show_unit(u))
349                         continue;
350
351                 max_id_len = MAX(max_id_len, strlen(u->id));
352                 active_len = MAX(active_len, strlen(u->active_state));
353                 sub_len = MAX(sub_len, strlen(u->sub_state));
354                 if (u->job_id != 0)
355                         job_len = MAX(job_len, strlen(u->job_type));
356         }
357
358         if (!arg_full) {
359                 unsigned basic_len;
360                 id_len = MIN(max_id_len, 25);
361                 basic_len = 5 + id_len + 6 + active_len + sub_len + job_len;
362                 if (basic_len < (unsigned) columns()) {
363                         unsigned extra_len, incr;
364                         extra_len = columns() - basic_len;
365                         /* Either UNIT already got 25, or is fully satisfied.
366                          * Grant up to 25 to DESC now. */
367                         incr = MIN(extra_len, 25);
368                         desc_len += incr;
369                         extra_len -= incr;
370                         /* split the remaining space between UNIT and DESC,
371                          * but do not give UNIT more than it needs. */
372                         if (extra_len > 0) {
373                                 incr = MIN(extra_len / 2, max_id_len - id_len);
374                                 id_len += incr;
375                                 desc_len += extra_len - incr;
376                         }
377                 }
378         } else
379                 id_len = max_id_len;
380
381         if (!arg_no_legend) {
382                 printf("%-*s %-6s %-*s %-*s %-*s ", id_len, "UNIT", "LOAD",
383                        active_len, "ACTIVE", sub_len, "SUB", job_len, "JOB");
384                 if (!arg_full && arg_no_pager)
385                         printf("%.*s\n", desc_len, "DESCRIPTION");
386                 else
387                         printf("%s\n", "DESCRIPTION");
388         }
389
390         for (u = unit_infos; u < unit_infos + c; u++) {
391                 char *e;
392                 const char *on_loaded, *off_loaded;
393                 const char *on_active, *off_active;
394
395                 if (!output_show_unit(u))
396                         continue;
397
398                 n_shown++;
399
400                 if (streq(u->load_state, "error")) {
401                         on_loaded = ansi_highlight_red(true);
402                         off_loaded = ansi_highlight_red(false);
403                 } else
404                         on_loaded = off_loaded = "";
405
406                 if (streq(u->active_state, "failed")) {
407                         on_active = ansi_highlight_red(true);
408                         off_active = ansi_highlight_red(false);
409                 } else
410                         on_active = off_active = "";
411
412                 e = arg_full ? NULL : ellipsize(u->id, id_len, 33);
413
414                 printf("%-*s %s%-6s%s %s%-*s %-*s%s %-*s ",
415                        id_len, e ? e : u->id,
416                        on_loaded, u->load_state, off_loaded,
417                        on_active, active_len, u->active_state,
418                        sub_len, u->sub_state, off_active,
419                        job_len, u->job_id ? u->job_type : "");
420                 if (!arg_full && arg_no_pager)
421                         printf("%.*s\n", desc_len, u->description);
422                 else
423                         printf("%s\n", u->description);
424
425                 free(e);
426         }
427
428         if (!arg_no_legend) {
429                 printf("\nLOAD   = Reflects whether the unit definition was properly loaded.\n"
430                        "ACTIVE = The high-level unit activation state, i.e. generalization of SUB.\n"
431                        "SUB    = The low-level unit activation state, values depend on unit type.\n"
432                        "JOB    = Pending job for the unit.\n");
433
434                 if (arg_all)
435                         printf("\n%u units listed.\n", n_shown);
436                 else
437                         printf("\n%u units listed. Pass --all to see inactive units, too.\n", n_shown);
438         }
439 }
440
441 static int list_units(DBusConnection *bus, char **args) {
442         DBusMessage *m = NULL, *reply = NULL;
443         DBusError error;
444         int r;
445         DBusMessageIter iter, sub, sub2;
446         unsigned c = 0, n_units = 0;
447         struct unit_info *unit_infos = NULL;
448
449         dbus_error_init(&error);
450
451         assert(bus);
452
453         pager_open_if_enabled();
454
455         if (!(m = dbus_message_new_method_call(
456                               "org.freedesktop.systemd1",
457                               "/org/freedesktop/systemd1",
458                               "org.freedesktop.systemd1.Manager",
459                               "ListUnits"))) {
460                 log_error("Could not allocate message.");
461                 return -ENOMEM;
462         }
463
464         if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
465                 log_error("Failed to issue method call: %s", bus_error_message(&error));
466                 r = -EIO;
467                 goto finish;
468         }
469
470         if (!dbus_message_iter_init(reply, &iter) ||
471             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
472             dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT)  {
473                 log_error("Failed to parse reply.");
474                 r = -EIO;
475                 goto finish;
476         }
477
478         dbus_message_iter_recurse(&iter, &sub);
479
480         while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
481                 struct unit_info *u;
482
483                 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
484                         log_error("Failed to parse reply.");
485                         r = -EIO;
486                         goto finish;
487                 }
488
489                 if (c >= n_units) {
490                         struct unit_info *w;
491
492                         n_units = MAX(2*c, 16);
493                         w = realloc(unit_infos, sizeof(struct unit_info) * n_units);
494
495                         if (!w) {
496                                 log_error("Failed to allocate unit array.");
497                                 r = -ENOMEM;
498                                 goto finish;
499                         }
500
501                         unit_infos = w;
502                 }
503
504                 u = unit_infos+c;
505
506                 dbus_message_iter_recurse(&sub, &sub2);
507
508                 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->id, true) < 0 ||
509                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->description, true) < 0 ||
510                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->load_state, true) < 0 ||
511                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->active_state, true) < 0 ||
512                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->sub_state, true) < 0 ||
513                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->following, true) < 0 ||
514                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &u->unit_path, true) < 0 ||
515                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &u->job_id, true) < 0 ||
516                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->job_type, true) < 0 ||
517                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &u->job_path, false) < 0) {
518                         log_error("Failed to parse reply.");
519                         r = -EIO;
520                         goto finish;
521                 }
522
523                 dbus_message_iter_next(&sub);
524                 c++;
525         }
526
527         if (c > 0) {
528                 qsort(unit_infos, c, sizeof(struct unit_info), compare_unit_info);
529                 output_units_list(unit_infos, c);
530         }
531
532         r = 0;
533
534 finish:
535         if (m)
536                 dbus_message_unref(m);
537
538         if (reply)
539                 dbus_message_unref(reply);
540
541         free(unit_infos);
542
543         dbus_error_free(&error);
544
545         return r;
546 }
547
548 static int compare_unit_file_list(const void *a, const void *b) {
549         const char *d1, *d2;
550         const UnitFileList *u = a, *v = b;
551
552         d1 = strrchr(u->path, '.');
553         d2 = strrchr(v->path, '.');
554
555         if (d1 && d2) {
556                 int r;
557
558                 r = strcasecmp(d1, d2);
559                 if (r != 0)
560                         return r;
561         }
562
563         return strcasecmp(file_name_from_path(u->path), file_name_from_path(v->path));
564 }
565
566 static bool output_show_unit_file(const UnitFileList *u) {
567         const char *dot;
568
569         return !arg_type || ((dot = strrchr(u->path, '.')) && streq(dot+1, arg_type));
570 }
571
572 static void output_unit_file_list(const UnitFileList *units, unsigned c) {
573         unsigned max_id_len, id_cols, state_cols, n_shown = 0;
574         const UnitFileList *u;
575
576         max_id_len = sizeof("UNIT FILE")-1;
577         state_cols = sizeof("STATE")-1;
578         for (u = units; u < units + c; u++) {
579                 if (!output_show_unit_file(u))
580                         continue;
581
582                 max_id_len = MAX(max_id_len, strlen(file_name_from_path(u->path)));
583                 state_cols = MAX(state_cols, strlen(unit_file_state_to_string(u->state)));
584         }
585
586         if (!arg_full) {
587                 unsigned basic_cols;
588                 id_cols = MIN(max_id_len, 25);
589                 basic_cols = 1 + id_cols + state_cols;
590                 if (basic_cols < (unsigned) columns())
591                         id_cols += MIN(columns() - basic_cols, max_id_len - id_cols);
592         } else
593                 id_cols = max_id_len;
594
595         if (!arg_no_legend)
596                 printf("%-*s %-*s\n", id_cols, "UNIT FILE", state_cols, "STATE");
597
598         for (u = units; u < units + c; u++) {
599                 char *e;
600                 const char *on, *off;
601                 const char *id;
602
603                 if (!output_show_unit_file(u))
604                         continue;
605
606                 n_shown++;
607
608                 if (u->state == UNIT_FILE_MASKED ||
609                     u->state == UNIT_FILE_MASKED_RUNTIME ||
610                     u->state == UNIT_FILE_DISABLED) {
611                         on  = ansi_highlight_red(true);
612                         off = ansi_highlight_red(false);
613                 } else if (u->state == UNIT_FILE_ENABLED) {
614                         on  = ansi_highlight_green(true);
615                         off = ansi_highlight_green(false);
616                 } else
617                         on = off = "";
618
619                 id = file_name_from_path(u->path);
620
621                 e = arg_full ? NULL : ellipsize(id, id_cols, 33);
622
623                 printf("%-*s %s%-*s%s\n",
624                        id_cols, e ? e : id,
625                        on, state_cols, unit_file_state_to_string(u->state), off);
626
627                 free(e);
628         }
629
630         if (!arg_no_legend)
631                 printf("\n%u unit files listed.\n", n_shown);
632 }
633
634 static int list_unit_files(DBusConnection *bus, char **args) {
635         DBusMessage *m = NULL, *reply = NULL;
636         DBusError error;
637         int r;
638         DBusMessageIter iter, sub, sub2;
639         unsigned c = 0, n_units = 0;
640         UnitFileList *units = NULL;
641
642         dbus_error_init(&error);
643
644         pager_open_if_enabled();
645
646         if (avoid_bus()) {
647                 Hashmap *h;
648                 UnitFileList *u;
649                 Iterator i;
650
651                 h = hashmap_new(string_hash_func, string_compare_func);
652                 if (!h) {
653                         log_error("Out of memory");
654                         return -ENOMEM;
655                 }
656
657                 r = unit_file_get_list(arg_scope, arg_root, h);
658                 if (r < 0) {
659                         unit_file_list_free(h);
660                         log_error("Failed to get unit file list: %s", strerror(-r));
661                         return r;
662                 }
663
664                 n_units = hashmap_size(h);
665                 units = new(UnitFileList, n_units);
666                 if (!units) {
667                         unit_file_list_free(h);
668                         log_error("Out of memory");
669                         return -ENOMEM;
670                 }
671
672                 HASHMAP_FOREACH(u, h, i) {
673                         memcpy(units + c++, u, sizeof(UnitFileList));
674                         free(u);
675                 }
676
677                 hashmap_free(h);
678         } else {
679                 assert(bus);
680
681                 m = dbus_message_new_method_call(
682                                 "org.freedesktop.systemd1",
683                                 "/org/freedesktop/systemd1",
684                                 "org.freedesktop.systemd1.Manager",
685                                 "ListUnitFiles");
686                 if (!m) {
687                         log_error("Could not allocate message.");
688                         return -ENOMEM;
689                 }
690
691                 reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
692                 if (!reply) {
693                         log_error("Failed to issue method call: %s", bus_error_message(&error));
694                         r = -EIO;
695                         goto finish;
696                 }
697
698                 if (!dbus_message_iter_init(reply, &iter) ||
699                     dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
700                     dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT)  {
701                         log_error("Failed to parse reply.");
702                         r = -EIO;
703                         goto finish;
704                 }
705
706                 dbus_message_iter_recurse(&iter, &sub);
707
708                 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
709                         UnitFileList *u;
710                         const char *state;
711
712                         if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
713                                 log_error("Failed to parse reply.");
714                                 r = -EIO;
715                                 goto finish;
716                         }
717
718                         if (c >= n_units) {
719                                 UnitFileList *w;
720
721                                 n_units = MAX(2*c, 16);
722                                 w = realloc(units, sizeof(struct UnitFileList) * n_units);
723
724                                 if (!w) {
725                                         log_error("Failed to allocate unit array.");
726                                         r = -ENOMEM;
727                                         goto finish;
728                                 }
729
730                                 units = w;
731                         }
732
733                         u = units+c;
734
735                         dbus_message_iter_recurse(&sub, &sub2);
736
737                         if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->path, true) < 0 ||
738                             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &state, false) < 0) {
739                                 log_error("Failed to parse reply.");
740                                 r = -EIO;
741                                 goto finish;
742                         }
743
744                         u->state = unit_file_state_from_string(state);
745
746                         dbus_message_iter_next(&sub);
747                         c++;
748                 }
749         }
750
751         if (c > 0) {
752                 qsort(units, c, sizeof(UnitFileList), compare_unit_file_list);
753                 output_unit_file_list(units, c);
754         }
755
756         r = 0;
757
758 finish:
759         if (m)
760                 dbus_message_unref(m);
761
762         if (reply)
763                 dbus_message_unref(reply);
764
765         free(units);
766
767         dbus_error_free(&error);
768
769         return r;
770 }
771
772 static int dot_one_property(const char *name, const char *prop, DBusMessageIter *iter) {
773         static const char * const colors[] = {
774                 "Requires",              "[color=\"black\"]",
775                 "RequiresOverridable",   "[color=\"black\"]",
776                 "Requisite",             "[color=\"darkblue\"]",
777                 "RequisiteOverridable",  "[color=\"darkblue\"]",
778                 "Wants",                 "[color=\"darkgrey\"]",
779                 "Conflicts",             "[color=\"red\"]",
780                 "ConflictedBy",          "[color=\"red\"]",
781                 "After",                 "[color=\"green\"]"
782         };
783
784         const char *c = NULL;
785         unsigned i;
786
787         assert(name);
788         assert(prop);
789         assert(iter);
790
791         for (i = 0; i < ELEMENTSOF(colors); i += 2)
792                 if (streq(colors[i], prop)) {
793                         c = colors[i+1];
794                         break;
795                 }
796
797         if (!c)
798                 return 0;
799
800         if (arg_dot != DOT_ALL)
801                 if ((arg_dot == DOT_ORDER) != streq(prop, "After"))
802                         return 0;
803
804         switch (dbus_message_iter_get_arg_type(iter)) {
805
806         case DBUS_TYPE_ARRAY:
807
808                 if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRING) {
809                         DBusMessageIter sub;
810
811                         dbus_message_iter_recurse(iter, &sub);
812
813                         while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
814                                 const char *s;
815
816                                 assert(dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING);
817                                 dbus_message_iter_get_basic(&sub, &s);
818                                 printf("\t\"%s\"->\"%s\" %s;\n", name, s, c);
819
820                                 dbus_message_iter_next(&sub);
821                         }
822
823                         return 0;
824                 }
825         }
826
827         return 0;
828 }
829
830 static int dot_one(DBusConnection *bus, const char *name, const char *path) {
831         DBusMessage *m = NULL, *reply = NULL;
832         const char *interface = "org.freedesktop.systemd1.Unit";
833         int r;
834         DBusError error;
835         DBusMessageIter iter, sub, sub2, sub3;
836
837         assert(bus);
838         assert(path);
839
840         dbus_error_init(&error);
841
842         if (!(m = dbus_message_new_method_call(
843                               "org.freedesktop.systemd1",
844                               path,
845                               "org.freedesktop.DBus.Properties",
846                               "GetAll"))) {
847                 log_error("Could not allocate message.");
848                 r = -ENOMEM;
849                 goto finish;
850         }
851
852         if (!dbus_message_append_args(m,
853                                       DBUS_TYPE_STRING, &interface,
854                                       DBUS_TYPE_INVALID)) {
855                 log_error("Could not append arguments to message.");
856                 r = -ENOMEM;
857                 goto finish;
858         }
859
860         if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
861                 log_error("Failed to issue method call: %s", bus_error_message(&error));
862                 r = -EIO;
863                 goto finish;
864         }
865
866         if (!dbus_message_iter_init(reply, &iter) ||
867             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
868             dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_DICT_ENTRY)  {
869                 log_error("Failed to parse reply.");
870                 r = -EIO;
871                 goto finish;
872         }
873
874         dbus_message_iter_recurse(&iter, &sub);
875
876         while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
877                 const char *prop;
878
879                 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_DICT_ENTRY) {
880                         log_error("Failed to parse reply.");
881                         r = -EIO;
882                         goto finish;
883                 }
884
885                 dbus_message_iter_recurse(&sub, &sub2);
886
887                 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &prop, true) < 0) {
888                         log_error("Failed to parse reply.");
889                         r = -EIO;
890                         goto finish;
891                 }
892
893                 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT)  {
894                         log_error("Failed to parse reply.");
895                         r = -EIO;
896                         goto finish;
897                 }
898
899                 dbus_message_iter_recurse(&sub2, &sub3);
900
901                 if (dot_one_property(name, prop, &sub3)) {
902                         log_error("Failed to parse reply.");
903                         r = -EIO;
904                         goto finish;
905                 }
906
907                 dbus_message_iter_next(&sub);
908         }
909
910         r = 0;
911
912 finish:
913         if (m)
914                 dbus_message_unref(m);
915
916         if (reply)
917                 dbus_message_unref(reply);
918
919         dbus_error_free(&error);
920
921         return r;
922 }
923
924 static int dot(DBusConnection *bus, char **args) {
925         DBusMessage *m = NULL, *reply = NULL;
926         DBusError error;
927         int r;
928         DBusMessageIter iter, sub, sub2;
929
930         dbus_error_init(&error);
931
932         assert(bus);
933
934         if (!(m = dbus_message_new_method_call(
935                               "org.freedesktop.systemd1",
936                               "/org/freedesktop/systemd1",
937                               "org.freedesktop.systemd1.Manager",
938                               "ListUnits"))) {
939                 log_error("Could not allocate message.");
940                 return -ENOMEM;
941         }
942
943         if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
944                 log_error("Failed to issue method call: %s", bus_error_message(&error));
945                 r = -EIO;
946                 goto finish;
947         }
948
949         if (!dbus_message_iter_init(reply, &iter) ||
950             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
951             dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT)  {
952                 log_error("Failed to parse reply.");
953                 r = -EIO;
954                 goto finish;
955         }
956
957         printf("digraph systemd {\n");
958
959         dbus_message_iter_recurse(&iter, &sub);
960         while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
961                 const char *id, *description, *load_state, *active_state, *sub_state, *following, *unit_path;
962
963                 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
964                         log_error("Failed to parse reply.");
965                         r = -EIO;
966                         goto finish;
967                 }
968
969                 dbus_message_iter_recurse(&sub, &sub2);
970
971                 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &id, true) < 0 ||
972                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &description, true) < 0 ||
973                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &load_state, true) < 0 ||
974                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &active_state, true) < 0 ||
975                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &sub_state, true) < 0 ||
976                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &following, true) < 0 ||
977                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &unit_path, true) < 0) {
978                         log_error("Failed to parse reply.");
979                         r = -EIO;
980                         goto finish;
981                 }
982
983                 if ((r = dot_one(bus, id, unit_path)) < 0)
984                         goto finish;
985
986                 /* printf("\t\"%s\";\n", id); */
987                 dbus_message_iter_next(&sub);
988         }
989
990         printf("}\n");
991
992         log_info("   Color legend: black     = Requires\n"
993                  "                 dark blue = Requisite\n"
994                  "                 dark grey = Wants\n"
995                  "                 red       = Conflicts\n"
996                  "                 green     = After\n");
997
998         if (on_tty())
999                 log_notice("-- You probably want to process this output with graphviz' dot tool.\n"
1000                            "-- Try a shell pipeline like 'systemctl dot | dot -Tsvg > systemd.svg'!\n");
1001
1002         r = 0;
1003
1004 finish:
1005         if (m)
1006                 dbus_message_unref(m);
1007
1008         if (reply)
1009                 dbus_message_unref(reply);
1010
1011         dbus_error_free(&error);
1012
1013         return r;
1014 }
1015
1016 static int list_jobs(DBusConnection *bus, char **args) {
1017         DBusMessage *m = NULL, *reply = NULL;
1018         DBusError error;
1019         int r;
1020         DBusMessageIter iter, sub, sub2;
1021         unsigned k = 0;
1022
1023         dbus_error_init(&error);
1024
1025         assert(bus);
1026
1027         pager_open_if_enabled();
1028
1029         if (!(m = dbus_message_new_method_call(
1030                               "org.freedesktop.systemd1",
1031                               "/org/freedesktop/systemd1",
1032                               "org.freedesktop.systemd1.Manager",
1033                               "ListJobs"))) {
1034                 log_error("Could not allocate message.");
1035                 return -ENOMEM;
1036         }
1037
1038         if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1039                 log_error("Failed to issue method call: %s", bus_error_message(&error));
1040                 r = -EIO;
1041                 goto finish;
1042         }
1043
1044         if (!dbus_message_iter_init(reply, &iter) ||
1045             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
1046             dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT)  {
1047                 log_error("Failed to parse reply.");
1048                 r = -EIO;
1049                 goto finish;
1050         }
1051
1052         dbus_message_iter_recurse(&iter, &sub);
1053
1054         if (on_tty())
1055                 printf("%4s %-25s %-15s %-7s\n", "JOB", "UNIT", "TYPE", "STATE");
1056
1057         while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
1058                 const char *name, *type, *state, *job_path, *unit_path;
1059                 uint32_t id;
1060                 char *e;
1061
1062                 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
1063                         log_error("Failed to parse reply.");
1064                         r = -EIO;
1065                         goto finish;
1066                 }
1067
1068                 dbus_message_iter_recurse(&sub, &sub2);
1069
1070                 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &id, true) < 0 ||
1071                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0 ||
1072                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) < 0 ||
1073                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &state, true) < 0 ||
1074                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &job_path, true) < 0 ||
1075                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &unit_path, false) < 0) {
1076                         log_error("Failed to parse reply.");
1077                         r = -EIO;
1078                         goto finish;
1079                 }
1080
1081                 e = arg_full ? NULL : ellipsize(name, 25, 33);
1082                 printf("%4u %-25s %-15s %-7s\n", id, e ? e : name, type, state);
1083                 free(e);
1084
1085                 k++;
1086
1087                 dbus_message_iter_next(&sub);
1088         }
1089
1090         if (on_tty())
1091                 printf("\n%u jobs listed.\n", k);
1092
1093         r = 0;
1094
1095 finish:
1096         if (m)
1097                 dbus_message_unref(m);
1098
1099         if (reply)
1100                 dbus_message_unref(reply);
1101
1102         dbus_error_free(&error);
1103
1104         return r;
1105 }
1106
1107 static int load_unit(DBusConnection *bus, char **args) {
1108         DBusMessage *m = NULL;
1109         DBusError error;
1110         int r;
1111         char **name;
1112
1113         dbus_error_init(&error);
1114
1115         assert(bus);
1116         assert(args);
1117
1118         STRV_FOREACH(name, args+1) {
1119                 DBusMessage *reply;
1120
1121                 if (!(m = dbus_message_new_method_call(
1122                                       "org.freedesktop.systemd1",
1123                                       "/org/freedesktop/systemd1",
1124                                       "org.freedesktop.systemd1.Manager",
1125                                       "LoadUnit"))) {
1126                         log_error("Could not allocate message.");
1127                         r = -ENOMEM;
1128                         goto finish;
1129                 }
1130
1131                 if (!dbus_message_append_args(m,
1132                                               DBUS_TYPE_STRING, name,
1133                                               DBUS_TYPE_INVALID)) {
1134                         log_error("Could not append arguments to message.");
1135                         r = -ENOMEM;
1136                         goto finish;
1137                 }
1138
1139                 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1140                         log_error("Failed to issue method call: %s", bus_error_message(&error));
1141                         r = -EIO;
1142                         goto finish;
1143                 }
1144
1145                 dbus_message_unref(m);
1146                 dbus_message_unref(reply);
1147
1148                 m = reply = NULL;
1149         }
1150
1151         r = 0;
1152
1153 finish:
1154         if (m)
1155                 dbus_message_unref(m);
1156
1157         dbus_error_free(&error);
1158
1159         return r;
1160 }
1161
1162 static int cancel_job(DBusConnection *bus, char **args) {
1163         DBusMessage *m = NULL, *reply = NULL;
1164         DBusError error;
1165         int r;
1166         char **name;
1167
1168         dbus_error_init(&error);
1169
1170         assert(bus);
1171         assert(args);
1172
1173         if (strv_length(args) <= 1)
1174                 return daemon_reload(bus, args);
1175
1176         STRV_FOREACH(name, args+1) {
1177                 unsigned id;
1178                 const char *path;
1179
1180                 if (!(m = dbus_message_new_method_call(
1181                                       "org.freedesktop.systemd1",
1182                                       "/org/freedesktop/systemd1",
1183                                       "org.freedesktop.systemd1.Manager",
1184                                       "GetJob"))) {
1185                         log_error("Could not allocate message.");
1186                         r = -ENOMEM;
1187                         goto finish;
1188                 }
1189
1190                 if ((r = safe_atou(*name, &id)) < 0) {
1191                         log_error("Failed to parse job id: %s", strerror(-r));
1192                         goto finish;
1193                 }
1194
1195                 assert_cc(sizeof(uint32_t) == sizeof(id));
1196                 if (!dbus_message_append_args(m,
1197                                               DBUS_TYPE_UINT32, &id,
1198                                               DBUS_TYPE_INVALID)) {
1199                         log_error("Could not append arguments to message.");
1200                         r = -ENOMEM;
1201                         goto finish;
1202                 }
1203
1204                 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1205                         log_error("Failed to issue method call: %s", bus_error_message(&error));
1206                         r = -EIO;
1207                         goto finish;
1208                 }
1209
1210                 if (!dbus_message_get_args(reply, &error,
1211                                            DBUS_TYPE_OBJECT_PATH, &path,
1212                                            DBUS_TYPE_INVALID)) {
1213                         log_error("Failed to parse reply: %s", bus_error_message(&error));
1214                         r = -EIO;
1215                         goto finish;
1216                 }
1217
1218                 dbus_message_unref(m);
1219                 if (!(m = dbus_message_new_method_call(
1220                                       "org.freedesktop.systemd1",
1221                                       path,
1222                                       "org.freedesktop.systemd1.Job",
1223                                       "Cancel"))) {
1224                         log_error("Could not allocate message.");
1225                         r = -ENOMEM;
1226                         goto finish;
1227                 }
1228
1229                 dbus_message_unref(reply);
1230                 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1231                         log_error("Failed to issue method call: %s", bus_error_message(&error));
1232                         r = -EIO;
1233                         goto finish;
1234                 }
1235
1236                 dbus_message_unref(m);
1237                 dbus_message_unref(reply);
1238                 m = reply = NULL;
1239         }
1240
1241         r = 0;
1242
1243 finish:
1244         if (m)
1245                 dbus_message_unref(m);
1246
1247         if (reply)
1248                 dbus_message_unref(reply);
1249
1250         dbus_error_free(&error);
1251
1252         return r;
1253 }
1254
1255 static bool need_daemon_reload(DBusConnection *bus, const char *unit) {
1256         DBusMessage *m = NULL, *reply = NULL;
1257         dbus_bool_t b = FALSE;
1258         DBusMessageIter iter, sub;
1259         const char
1260                 *interface = "org.freedesktop.systemd1.Unit",
1261                 *property = "NeedDaemonReload",
1262                 *path;
1263
1264         /* We ignore all errors here, since this is used to show a warning only */
1265
1266         if (!(m = dbus_message_new_method_call(
1267                               "org.freedesktop.systemd1",
1268                               "/org/freedesktop/systemd1",
1269                               "org.freedesktop.systemd1.Manager",
1270                               "GetUnit")))
1271                 goto finish;
1272
1273         if (!dbus_message_append_args(m,
1274                                       DBUS_TYPE_STRING, &unit,
1275                                       DBUS_TYPE_INVALID))
1276                 goto finish;
1277
1278         if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, NULL)))
1279                 goto finish;
1280
1281         if (!dbus_message_get_args(reply, NULL,
1282                                    DBUS_TYPE_OBJECT_PATH, &path,
1283                                    DBUS_TYPE_INVALID))
1284                 goto finish;
1285
1286         dbus_message_unref(m);
1287         if (!(m = dbus_message_new_method_call(
1288                               "org.freedesktop.systemd1",
1289                               path,
1290                               "org.freedesktop.DBus.Properties",
1291                               "Get")))
1292                 goto finish;
1293
1294         if (!dbus_message_append_args(m,
1295                                       DBUS_TYPE_STRING, &interface,
1296                                       DBUS_TYPE_STRING, &property,
1297                                       DBUS_TYPE_INVALID)) {
1298                 goto finish;
1299         }
1300
1301         dbus_message_unref(reply);
1302         if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, NULL)))
1303                 goto finish;
1304
1305         if (!dbus_message_iter_init(reply, &iter) ||
1306             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT)
1307                 goto finish;
1308
1309         dbus_message_iter_recurse(&iter, &sub);
1310
1311         if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_BOOLEAN)
1312                 goto finish;
1313
1314         dbus_message_iter_get_basic(&sub, &b);
1315
1316 finish:
1317         if (m)
1318                 dbus_message_unref(m);
1319
1320         if (reply)
1321                 dbus_message_unref(reply);
1322
1323         return b;
1324 }
1325
1326 typedef struct WaitData {
1327         Set *set;
1328         char *result;
1329 } WaitData;
1330
1331 static DBusHandlerResult wait_filter(DBusConnection *connection, DBusMessage *message, void *data) {
1332         DBusError error;
1333         WaitData *d = data;
1334
1335         assert(connection);
1336         assert(message);
1337         assert(d);
1338
1339         dbus_error_init(&error);
1340
1341         log_debug("Got D-Bus request: %s.%s() on %s",
1342                   dbus_message_get_interface(message),
1343                   dbus_message_get_member(message),
1344                   dbus_message_get_path(message));
1345
1346         if (dbus_message_is_signal(message, DBUS_INTERFACE_LOCAL, "Disconnected")) {
1347                 log_error("Warning! D-Bus connection terminated.");
1348                 dbus_connection_close(connection);
1349
1350         } else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "JobRemoved")) {
1351                 uint32_t id;
1352                 const char *path, *result;
1353                 dbus_bool_t success = true;
1354
1355                 if (dbus_message_get_args(message, &error,
1356                                           DBUS_TYPE_UINT32, &id,
1357                                           DBUS_TYPE_OBJECT_PATH, &path,
1358                                           DBUS_TYPE_STRING, &result,
1359                                           DBUS_TYPE_INVALID)) {
1360                         char *p;
1361
1362                         if ((p = set_remove(d->set, (char*) path)))
1363                                 free(p);
1364
1365                         if (*result)
1366                                 d->result = strdup(result);
1367
1368                         goto finish;
1369                 }
1370 #ifndef LEGACY
1371                 dbus_error_free(&error);
1372
1373                 if (dbus_message_get_args(message, &error,
1374                                           DBUS_TYPE_UINT32, &id,
1375                                           DBUS_TYPE_OBJECT_PATH, &path,
1376                                           DBUS_TYPE_BOOLEAN, &success,
1377                                           DBUS_TYPE_INVALID)) {
1378                         char *p;
1379
1380                         /* Compatibility with older systemd versions <
1381                          * 19 during upgrades. This should be dropped
1382                          * one day */
1383
1384                         if ((p = set_remove(d->set, (char*) path)))
1385                                 free(p);
1386
1387                         if (!success)
1388                                 d->result = strdup("failed");
1389
1390                         goto finish;
1391                 }
1392 #endif
1393
1394                 log_error("Failed to parse message: %s", bus_error_message(&error));
1395         }
1396
1397 finish:
1398         dbus_error_free(&error);
1399         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1400 }
1401
1402 static int enable_wait_for_jobs(DBusConnection *bus) {
1403         DBusError error;
1404
1405         assert(bus);
1406
1407         if (private_bus)
1408                 return 0;
1409
1410         dbus_error_init(&error);
1411         dbus_bus_add_match(bus,
1412                            "type='signal',"
1413                            "sender='org.freedesktop.systemd1',"
1414                            "interface='org.freedesktop.systemd1.Manager',"
1415                            "member='JobRemoved',"
1416                            "path='/org/freedesktop/systemd1'",
1417                            &error);
1418
1419         if (dbus_error_is_set(&error)) {
1420                 log_error("Failed to add match: %s", bus_error_message(&error));
1421                 dbus_error_free(&error);
1422                 return -EIO;
1423         }
1424
1425         /* This is slightly dirty, since we don't undo the match registrations. */
1426         return 0;
1427 }
1428
1429 static int wait_for_jobs(DBusConnection *bus, Set *s) {
1430         int r;
1431         WaitData d;
1432
1433         assert(bus);
1434         assert(s);
1435
1436         zero(d);
1437         d.set = s;
1438
1439         if (!dbus_connection_add_filter(bus, wait_filter, &d, NULL)) {
1440                 log_error("Failed to add filter.");
1441                 r = -ENOMEM;
1442                 goto finish;
1443         }
1444
1445         while (!set_isempty(s) &&
1446                dbus_connection_read_write_dispatch(bus, -1))
1447                 ;
1448
1449         if (!arg_quiet && d.result) {
1450                 if (streq(d.result, "timeout"))
1451                         log_error("Job timed out.");
1452                 else if (streq(d.result, "canceled"))
1453                         log_error("Job canceled.");
1454                 else if (streq(d.result, "dependency"))
1455                         log_error("A dependency job failed. See system journal for details.");
1456                 else if (!streq(d.result, "done") && !streq(d.result, "skipped"))
1457                         log_error("Job failed. See system journal and 'systemctl status' for details.");
1458         }
1459
1460         if (streq_ptr(d.result, "timeout"))
1461                 r = -ETIME;
1462         else if (streq_ptr(d.result, "canceled"))
1463                 r = -ECANCELED;
1464         else if (!streq_ptr(d.result, "done") && !streq_ptr(d.result, "skipped"))
1465                 r = -EIO;
1466         else
1467                 r = 0;
1468
1469         free(d.result);
1470
1471 finish:
1472         /* This is slightly dirty, since we don't undo the filter registration. */
1473
1474         return r;
1475 }
1476
1477 static int start_unit_one(
1478                 DBusConnection *bus,
1479                 const char *method,
1480                 const char *name,
1481                 const char *mode,
1482                 DBusError *error,
1483                 Set *s) {
1484
1485         DBusMessage *m = NULL, *reply = NULL;
1486         const char *path;
1487         int r;
1488
1489         assert(bus);
1490         assert(method);
1491         assert(name);
1492         assert(mode);
1493         assert(error);
1494         assert(arg_no_block || s);
1495
1496         if (!(m = dbus_message_new_method_call(
1497                               "org.freedesktop.systemd1",
1498                               "/org/freedesktop/systemd1",
1499                               "org.freedesktop.systemd1.Manager",
1500                               method))) {
1501                 log_error("Could not allocate message.");
1502                 r = -ENOMEM;
1503                 goto finish;
1504         }
1505
1506         if (!dbus_message_append_args(m,
1507                                       DBUS_TYPE_STRING, &name,
1508                                       DBUS_TYPE_STRING, &mode,
1509                                       DBUS_TYPE_INVALID)) {
1510                 log_error("Could not append arguments to message.");
1511                 r = -ENOMEM;
1512                 goto finish;
1513         }
1514
1515         if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, error))) {
1516
1517                 if (arg_action != ACTION_SYSTEMCTL && error_is_no_service(error)) {
1518                         /* There's always a fallback possible for
1519                          * legacy actions. */
1520                         r = -EADDRNOTAVAIL;
1521                         goto finish;
1522                 }
1523
1524                 log_error("Failed to issue method call: %s", bus_error_message(error));
1525                 r = -EIO;
1526                 goto finish;
1527         }
1528
1529         if (!dbus_message_get_args(reply, error,
1530                                    DBUS_TYPE_OBJECT_PATH, &path,
1531                                    DBUS_TYPE_INVALID)) {
1532                 log_error("Failed to parse reply: %s", bus_error_message(error));
1533                 r = -EIO;
1534                 goto finish;
1535         }
1536
1537         if (need_daemon_reload(bus, name))
1538                 log_warning("Warning: Unit file of created job changed on disk, 'systemctl %s daemon-reload' recommended.",
1539                             arg_scope == UNIT_FILE_SYSTEM ? "--system" : "--user");
1540
1541         if (!arg_no_block) {
1542                 char *p;
1543
1544                 if (!(p = strdup(path))) {
1545                         log_error("Failed to duplicate path.");
1546                         r = -ENOMEM;
1547                         goto finish;
1548                 }
1549
1550                 if ((r = set_put(s, p)) < 0) {
1551                         free(p);
1552                         log_error("Failed to add path to set.");
1553                         goto finish;
1554                 }
1555         }
1556
1557         r = 0;
1558
1559 finish:
1560         if (m)
1561                 dbus_message_unref(m);
1562
1563         if (reply)
1564                 dbus_message_unref(reply);
1565
1566         return r;
1567 }
1568
1569 static enum action verb_to_action(const char *verb) {
1570         if (streq(verb, "halt"))
1571                 return ACTION_HALT;
1572         else if (streq(verb, "poweroff"))
1573                 return ACTION_POWEROFF;
1574         else if (streq(verb, "reboot"))
1575                 return ACTION_REBOOT;
1576         else if (streq(verb, "kexec"))
1577                 return ACTION_KEXEC;
1578         else if (streq(verb, "rescue"))
1579                 return ACTION_RESCUE;
1580         else if (streq(verb, "emergency"))
1581                 return ACTION_EMERGENCY;
1582         else if (streq(verb, "default"))
1583                 return ACTION_DEFAULT;
1584         else if (streq(verb, "exit"))
1585                 return ACTION_EXIT;
1586         else
1587                 return ACTION_INVALID;
1588 }
1589
1590 static int start_unit(DBusConnection *bus, char **args) {
1591
1592         static const char * const table[_ACTION_MAX] = {
1593                 [ACTION_HALT] = SPECIAL_HALT_TARGET,
1594                 [ACTION_POWEROFF] = SPECIAL_POWEROFF_TARGET,
1595                 [ACTION_REBOOT] = SPECIAL_REBOOT_TARGET,
1596                 [ACTION_KEXEC] = SPECIAL_KEXEC_TARGET,
1597                 [ACTION_RUNLEVEL2] = SPECIAL_RUNLEVEL2_TARGET,
1598                 [ACTION_RUNLEVEL3] = SPECIAL_RUNLEVEL3_TARGET,
1599                 [ACTION_RUNLEVEL4] = SPECIAL_RUNLEVEL4_TARGET,
1600                 [ACTION_RUNLEVEL5] = SPECIAL_RUNLEVEL5_TARGET,
1601                 [ACTION_RESCUE] = SPECIAL_RESCUE_TARGET,
1602                 [ACTION_EMERGENCY] = SPECIAL_EMERGENCY_TARGET,
1603                 [ACTION_DEFAULT] = SPECIAL_DEFAULT_TARGET,
1604                 [ACTION_EXIT] = SPECIAL_EXIT_TARGET
1605         };
1606
1607         int r, ret = 0;
1608         const char *method, *mode, *one_name;
1609         Set *s = NULL;
1610         DBusError error;
1611         char **name;
1612
1613         dbus_error_init(&error);
1614
1615         assert(bus);
1616
1617         ask_password_agent_open_if_enabled();
1618
1619         if (arg_action == ACTION_SYSTEMCTL) {
1620                 method =
1621                         streq(args[0], "stop") ||
1622                         streq(args[0], "condstop")              ? "StopUnit" :
1623                         streq(args[0], "reload")                ? "ReloadUnit" :
1624                         streq(args[0], "restart")               ? "RestartUnit" :
1625
1626                         streq(args[0], "try-restart")           ||
1627                         streq(args[0], "condrestart")           ? "TryRestartUnit" :
1628
1629                         streq(args[0], "reload-or-restart")     ? "ReloadOrRestartUnit" :
1630
1631                         streq(args[0], "reload-or-try-restart") ||
1632                         streq(args[0], "condreload") ||
1633
1634                         streq(args[0], "force-reload")          ? "ReloadOrTryRestartUnit" :
1635                                                                   "StartUnit";
1636
1637                 mode =
1638                         (streq(args[0], "isolate") ||
1639                          streq(args[0], "rescue")  ||
1640                          streq(args[0], "emergency")) ? "isolate" : arg_job_mode;
1641
1642                 one_name = table[verb_to_action(args[0])];
1643
1644         } else {
1645                 assert(arg_action < ELEMENTSOF(table));
1646                 assert(table[arg_action]);
1647
1648                 method = "StartUnit";
1649
1650                 mode = (arg_action == ACTION_EMERGENCY ||
1651                         arg_action == ACTION_RESCUE ||
1652                         arg_action == ACTION_RUNLEVEL2 ||
1653                         arg_action == ACTION_RUNLEVEL3 ||
1654                         arg_action == ACTION_RUNLEVEL4 ||
1655                         arg_action == ACTION_RUNLEVEL5) ? "isolate" : "replace";
1656
1657                 one_name = table[arg_action];
1658         }
1659
1660         if (!arg_no_block) {
1661                 if ((ret = enable_wait_for_jobs(bus)) < 0) {
1662                         log_error("Could not watch jobs: %s", strerror(-ret));
1663                         goto finish;
1664                 }
1665
1666                 if (!(s = set_new(string_hash_func, string_compare_func))) {
1667                         log_error("Failed to allocate set.");
1668                         ret = -ENOMEM;
1669                         goto finish;
1670                 }
1671         }
1672
1673         if (one_name) {
1674                 if ((ret = start_unit_one(bus, method, one_name, mode, &error, s)) <= 0)
1675                         goto finish;
1676         } else {
1677                 STRV_FOREACH(name, args+1)
1678                         if ((r = start_unit_one(bus, method, *name, mode, &error, s)) != 0) {
1679                                 ret = translate_bus_error_to_exit_status(r, &error);
1680                                 dbus_error_free(&error);
1681                         }
1682         }
1683
1684         if (!arg_no_block)
1685                 if ((r = wait_for_jobs(bus, s)) < 0) {
1686                         ret = r;
1687                         goto finish;
1688                 }
1689
1690 finish:
1691         if (s)
1692                 set_free_free(s);
1693
1694         dbus_error_free(&error);
1695
1696         return ret;
1697 }
1698
1699 /* Ask systemd-logind, which might grant access to unprivileged users
1700  * through PolicyKit */
1701 static int reboot_with_logind(DBusConnection *bus, enum action a) {
1702 #ifdef HAVE_LOGIND
1703         const char *method;
1704         DBusMessage *m = NULL, *reply = NULL;
1705         DBusError error;
1706         dbus_bool_t interactive = true;
1707         int r;
1708
1709         dbus_error_init(&error);
1710
1711         polkit_agent_open_if_enabled();
1712
1713         switch (a) {
1714
1715         case ACTION_REBOOT:
1716                 method = "Reboot";
1717                 break;
1718
1719         case ACTION_POWEROFF:
1720                 method = "PowerOff";
1721                 break;
1722
1723         default:
1724                 return -EINVAL;
1725         }
1726
1727         m = dbus_message_new_method_call(
1728                                 "org.freedesktop.login1",
1729                                 "/org/freedesktop/login1",
1730                                 "org.freedesktop.login1.Manager",
1731                                 method);
1732         if (!m) {
1733                 log_error("Could not allocate message.");
1734                 r = -ENOMEM;
1735                 goto finish;
1736         }
1737
1738         if (!dbus_message_append_args(m,
1739                                       DBUS_TYPE_BOOLEAN, &interactive,
1740                                       DBUS_TYPE_INVALID)) {
1741                 log_error("Could not append arguments to message.");
1742                 r = -ENOMEM;
1743                 goto finish;
1744         }
1745
1746         reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
1747         if (!reply) {
1748                 if (error_is_no_service(&error)) {
1749                         log_debug("Failed to issue method call: %s", bus_error_message(&error));
1750                         r = -ENOENT;
1751                         goto finish;
1752                 }
1753
1754                 if (dbus_error_has_name(&error, DBUS_ERROR_ACCESS_DENIED)) {
1755                         log_debug("Failed to issue method call: %s", bus_error_message(&error));
1756                         r = -EACCES;
1757                         goto finish;
1758                 }
1759
1760                 log_info("Failed to issue method call: %s", bus_error_message(&error));
1761                 r = -EIO;
1762                 goto finish;
1763         }
1764
1765         r = 0;
1766
1767 finish:
1768         if (m)
1769                 dbus_message_unref(m);
1770
1771         if (reply)
1772                 dbus_message_unref(reply);
1773
1774         dbus_error_free(&error);
1775
1776         return r;
1777 #else
1778         return -ENOSYS;
1779 #endif
1780 }
1781
1782 static int start_special(DBusConnection *bus, char **args) {
1783         enum action a;
1784         int r;
1785
1786         assert(bus);
1787         assert(args);
1788
1789         a = verb_to_action(args[0]);
1790
1791         if (arg_force >= 2 && geteuid() != 0) {
1792                 log_error("Must be root.");
1793                 return -EPERM;
1794         }
1795
1796         if (arg_force >= 2 &&
1797             (a == ACTION_HALT ||
1798              a == ACTION_POWEROFF ||
1799              a == ACTION_REBOOT))
1800                 halt_now(a);
1801
1802         if (arg_force >= 1 &&
1803             (a == ACTION_HALT ||
1804              a == ACTION_POWEROFF ||
1805              a == ACTION_REBOOT ||
1806              a == ACTION_KEXEC ||
1807              a == ACTION_EXIT))
1808                 return daemon_reload(bus, args);
1809
1810         /* first try logind, to allow authentication with polkit */
1811         if (geteuid() != 0 &&
1812             (a == ACTION_POWEROFF ||
1813              a == ACTION_REBOOT)) {
1814                 r = reboot_with_logind(bus, a);
1815                 if (r >= 0)
1816                         return r;
1817         }
1818
1819         r = start_unit(bus, args);
1820         if (r >= 0)
1821                 warn_wall(a);
1822
1823         return r;
1824 }
1825
1826 static int check_unit(DBusConnection *bus, char **args) {
1827         DBusMessage *m = NULL, *reply = NULL;
1828         const char
1829                 *interface = "org.freedesktop.systemd1.Unit",
1830                 *property = "ActiveState";
1831         int r = 3; /* According to LSB: "program is not running" */
1832         DBusError error;
1833         char **name;
1834
1835         assert(bus);
1836         assert(args);
1837
1838         dbus_error_init(&error);
1839
1840         STRV_FOREACH(name, args+1) {
1841                 const char *path = NULL;
1842                 const char *state;
1843                 DBusMessageIter iter, sub;
1844
1845                 if (!(m = dbus_message_new_method_call(
1846                                       "org.freedesktop.systemd1",
1847                                       "/org/freedesktop/systemd1",
1848                                       "org.freedesktop.systemd1.Manager",
1849                                       "GetUnit"))) {
1850                         log_error("Could not allocate message.");
1851                         r = -ENOMEM;
1852                         goto finish;
1853                 }
1854
1855                 if (!dbus_message_append_args(m,
1856                                               DBUS_TYPE_STRING, name,
1857                                               DBUS_TYPE_INVALID)) {
1858                         log_error("Could not append arguments to message.");
1859                         r = -ENOMEM;
1860                         goto finish;
1861                 }
1862
1863                 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1864
1865                         /* Hmm, cannot figure out anything about this unit... */
1866                         if (!arg_quiet)
1867                                 puts("unknown");
1868
1869                         dbus_error_free(&error);
1870                         dbus_message_unref(m);
1871                         m = NULL;
1872                         continue;
1873                 }
1874
1875                 if (!dbus_message_get_args(reply, &error,
1876                                            DBUS_TYPE_OBJECT_PATH, &path,
1877                                            DBUS_TYPE_INVALID)) {
1878                         log_error("Failed to parse reply: %s", bus_error_message(&error));
1879                         r = -EIO;
1880                         goto finish;
1881                 }
1882
1883                 dbus_message_unref(m);
1884                 if (!(m = dbus_message_new_method_call(
1885                                       "org.freedesktop.systemd1",
1886                                       path,
1887                                       "org.freedesktop.DBus.Properties",
1888                                       "Get"))) {
1889                         log_error("Could not allocate message.");
1890                         r = -ENOMEM;
1891                         goto finish;
1892                 }
1893
1894                 if (!dbus_message_append_args(m,
1895                                               DBUS_TYPE_STRING, &interface,
1896                                               DBUS_TYPE_STRING, &property,
1897                                               DBUS_TYPE_INVALID)) {
1898                         log_error("Could not append arguments to message.");
1899                         r = -ENOMEM;
1900                         goto finish;
1901                 }
1902
1903                 dbus_message_unref(reply);
1904                 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1905                         log_error("Failed to issue method call: %s", bus_error_message(&error));
1906                         r = -EIO;
1907                         goto finish;
1908                 }
1909
1910                 if (!dbus_message_iter_init(reply, &iter) ||
1911                     dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT)  {
1912                         log_error("Failed to parse reply.");
1913                         r = -EIO;
1914                         goto finish;
1915                 }
1916
1917                 dbus_message_iter_recurse(&iter, &sub);
1918
1919                 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING)  {
1920                         log_error("Failed to parse reply.");
1921                         r = -EIO;
1922                         goto finish;
1923                 }
1924
1925                 dbus_message_iter_get_basic(&sub, &state);
1926
1927                 if (!arg_quiet)
1928                         puts(state);
1929
1930                 if (streq(state, "active") || streq(state, "reloading"))
1931                         r = 0;
1932
1933                 dbus_message_unref(m);
1934                 dbus_message_unref(reply);
1935                 m = reply = NULL;
1936         }
1937
1938 finish:
1939         if (m)
1940                 dbus_message_unref(m);
1941
1942         if (reply)
1943                 dbus_message_unref(reply);
1944
1945         dbus_error_free(&error);
1946
1947         return r;
1948 }
1949
1950 static int kill_unit(DBusConnection *bus, char **args) {
1951         DBusMessage *m = NULL;
1952         int r = 0;
1953         DBusError error;
1954         char **name;
1955
1956         assert(bus);
1957         assert(args);
1958
1959         dbus_error_init(&error);
1960
1961         if (!arg_kill_who)
1962                 arg_kill_who = "all";
1963
1964         if (!arg_kill_mode)
1965                 arg_kill_mode = streq(arg_kill_who, "all") ? "control-group" : "process";
1966
1967         STRV_FOREACH(name, args+1) {
1968                 DBusMessage *reply;
1969
1970                 if (!(m = dbus_message_new_method_call(
1971                                       "org.freedesktop.systemd1",
1972                                       "/org/freedesktop/systemd1",
1973                                       "org.freedesktop.systemd1.Manager",
1974                                       "KillUnit"))) {
1975                         log_error("Could not allocate message.");
1976                         r = -ENOMEM;
1977                         goto finish;
1978                 }
1979
1980                 if (!dbus_message_append_args(m,
1981                                               DBUS_TYPE_STRING, name,
1982                                               DBUS_TYPE_STRING, &arg_kill_who,
1983                                               DBUS_TYPE_STRING, &arg_kill_mode,
1984                                               DBUS_TYPE_INT32, &arg_signal,
1985                                               DBUS_TYPE_INVALID)) {
1986                         log_error("Could not append arguments to message.");
1987                         r = -ENOMEM;
1988                         goto finish;
1989                 }
1990
1991                 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1992                         log_error("Failed to issue method call: %s", bus_error_message(&error));
1993                         dbus_error_free(&error);
1994                         r = -EIO;
1995                 }
1996
1997                 dbus_message_unref(m);
1998
1999                 if (reply)
2000                         dbus_message_unref(reply);
2001                 m = reply = NULL;
2002         }
2003
2004 finish:
2005         if (m)
2006                 dbus_message_unref(m);
2007
2008         dbus_error_free(&error);
2009
2010         return r;
2011 }
2012
2013 typedef struct ExecStatusInfo {
2014         char *name;
2015
2016         char *path;
2017         char **argv;
2018
2019         bool ignore;
2020
2021         usec_t start_timestamp;
2022         usec_t exit_timestamp;
2023         pid_t pid;
2024         int code;
2025         int status;
2026
2027         LIST_FIELDS(struct ExecStatusInfo, exec);
2028 } ExecStatusInfo;
2029
2030 static void exec_status_info_free(ExecStatusInfo *i) {
2031         assert(i);
2032
2033         free(i->name);
2034         free(i->path);
2035         strv_free(i->argv);
2036         free(i);
2037 }
2038
2039 static int exec_status_info_deserialize(DBusMessageIter *sub, ExecStatusInfo *i) {
2040         uint64_t start_timestamp, exit_timestamp, start_timestamp_monotonic, exit_timestamp_monotonic;
2041         DBusMessageIter sub2, sub3;
2042         const char*path;
2043         unsigned n;
2044         uint32_t pid;
2045         int32_t code, status;
2046         dbus_bool_t ignore;
2047
2048         assert(i);
2049         assert(i);
2050
2051         if (dbus_message_iter_get_arg_type(sub) != DBUS_TYPE_STRUCT)
2052                 return -EIO;
2053
2054         dbus_message_iter_recurse(sub, &sub2);
2055
2056         if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, true) < 0)
2057                 return -EIO;
2058
2059         if (!(i->path = strdup(path)))
2060                 return -ENOMEM;
2061
2062         if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_ARRAY ||
2063             dbus_message_iter_get_element_type(&sub2) != DBUS_TYPE_STRING)
2064                 return -EIO;
2065
2066         n = 0;
2067         dbus_message_iter_recurse(&sub2, &sub3);
2068         while (dbus_message_iter_get_arg_type(&sub3) != DBUS_TYPE_INVALID) {
2069                 assert(dbus_message_iter_get_arg_type(&sub3) == DBUS_TYPE_STRING);
2070                 dbus_message_iter_next(&sub3);
2071                 n++;
2072         }
2073
2074
2075         if (!(i->argv = new0(char*, n+1)))
2076                 return -ENOMEM;
2077
2078         n = 0;
2079         dbus_message_iter_recurse(&sub2, &sub3);
2080         while (dbus_message_iter_get_arg_type(&sub3) != DBUS_TYPE_INVALID) {
2081                 const char *s;
2082
2083                 assert(dbus_message_iter_get_arg_type(&sub3) == DBUS_TYPE_STRING);
2084                 dbus_message_iter_get_basic(&sub3, &s);
2085                 dbus_message_iter_next(&sub3);
2086
2087                 if (!(i->argv[n++] = strdup(s)))
2088                         return -ENOMEM;
2089         }
2090
2091         if (!dbus_message_iter_next(&sub2) ||
2092             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_BOOLEAN, &ignore, true) < 0 ||
2093             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &start_timestamp, true) < 0 ||
2094             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &start_timestamp_monotonic, true) < 0 ||
2095             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &exit_timestamp, true) < 0 ||
2096             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &exit_timestamp_monotonic, true) < 0 ||
2097             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &pid, true) < 0 ||
2098             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_INT32, &code, true) < 0 ||
2099             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_INT32, &status, false) < 0)
2100                 return -EIO;
2101
2102         i->ignore = ignore;
2103         i->start_timestamp = (usec_t) start_timestamp;
2104         i->exit_timestamp = (usec_t) exit_timestamp;
2105         i->pid = (pid_t) pid;
2106         i->code = code;
2107         i->status = status;
2108
2109         return 0;
2110 }
2111
2112 typedef struct UnitStatusInfo {
2113         const char *id;
2114         const char *load_state;
2115         const char *active_state;
2116         const char *sub_state;
2117         const char *unit_file_state;
2118
2119         const char *description;
2120         const char *following;
2121
2122         const char *path;
2123         const char *default_control_group;
2124
2125         const char *load_error;
2126         const char *result;
2127
2128         usec_t inactive_exit_timestamp;
2129         usec_t inactive_exit_timestamp_monotonic;
2130         usec_t active_enter_timestamp;
2131         usec_t active_exit_timestamp;
2132         usec_t inactive_enter_timestamp;
2133
2134         bool need_daemon_reload;
2135
2136         /* Service */
2137         pid_t main_pid;
2138         pid_t control_pid;
2139         const char *status_text;
2140         bool running:1;
2141 #ifdef HAVE_SYSV_COMPAT
2142         bool is_sysv:1;
2143 #endif
2144
2145         usec_t start_timestamp;
2146         usec_t exit_timestamp;
2147
2148         int exit_code, exit_status;
2149
2150         usec_t condition_timestamp;
2151         bool condition_result;
2152
2153         /* Socket */
2154         unsigned n_accepted;
2155         unsigned n_connections;
2156         bool accept;
2157
2158         /* Device */
2159         const char *sysfs_path;
2160
2161         /* Mount, Automount */
2162         const char *where;
2163
2164         /* Swap */
2165         const char *what;
2166
2167         LIST_HEAD(ExecStatusInfo, exec);
2168 } UnitStatusInfo;
2169
2170 static void print_status_info(UnitStatusInfo *i) {
2171         ExecStatusInfo *p;
2172         const char *on, *off, *ss;
2173         usec_t timestamp;
2174         char since1[FORMAT_TIMESTAMP_PRETTY_MAX], *s1;
2175         char since2[FORMAT_TIMESTAMP_MAX], *s2;
2176
2177         assert(i);
2178
2179         /* This shows pretty information about a unit. See
2180          * print_property() for a low-level property printer */
2181
2182         printf("%s", strna(i->id));
2183
2184         if (i->description && !streq_ptr(i->id, i->description))
2185                 printf(" - %s", i->description);
2186
2187         printf("\n");
2188
2189         if (i->following)
2190                 printf("\t  Follow: unit currently follows state of %s\n", i->following);
2191
2192         if (streq_ptr(i->load_state, "error")) {
2193                 on = ansi_highlight_red(true);
2194                 off = ansi_highlight_red(false);
2195         } else
2196                 on = off = "";
2197
2198         if (i->load_error)
2199                 printf("\t  Loaded: %s%s%s (Reason: %s)\n", on, strna(i->load_state), off, i->load_error);
2200         else if (i->path && i->unit_file_state)
2201                 printf("\t  Loaded: %s%s%s (%s; %s)\n", on, strna(i->load_state), off, i->path, i->unit_file_state);
2202         else if (i->path)
2203                 printf("\t  Loaded: %s%s%s (%s)\n", on, strna(i->load_state), off, i->path);
2204         else
2205                 printf("\t  Loaded: %s%s%s\n", on, strna(i->load_state), off);
2206
2207         ss = streq_ptr(i->active_state, i->sub_state) ? NULL : i->sub_state;
2208
2209         if (streq_ptr(i->active_state, "failed")) {
2210                 on = ansi_highlight_red(true);
2211                 off = ansi_highlight_red(false);
2212         } else if (streq_ptr(i->active_state, "active") || streq_ptr(i->active_state, "reloading")) {
2213                 on = ansi_highlight_green(true);
2214                 off = ansi_highlight_green(false);
2215         } else
2216                 on = off = "";
2217
2218         if (ss)
2219                 printf("\t  Active: %s%s (%s)%s",
2220                        on,
2221                        strna(i->active_state),
2222                        ss,
2223                        off);
2224         else
2225                 printf("\t  Active: %s%s%s",
2226                        on,
2227                        strna(i->active_state),
2228                        off);
2229
2230         if (!isempty(i->result) && !streq(i->result, "success"))
2231                 printf(" (Result: %s)", i->result);
2232
2233         timestamp = (streq_ptr(i->active_state, "active")      ||
2234                      streq_ptr(i->active_state, "reloading"))   ? i->active_enter_timestamp :
2235                     (streq_ptr(i->active_state, "inactive")    ||
2236                      streq_ptr(i->active_state, "failed"))      ? i->inactive_enter_timestamp :
2237                     streq_ptr(i->active_state, "activating")    ? i->inactive_exit_timestamp :
2238                                                                   i->active_exit_timestamp;
2239
2240         s1 = format_timestamp_pretty(since1, sizeof(since1), timestamp);
2241         s2 = format_timestamp(since2, sizeof(since2), timestamp);
2242
2243         if (s1)
2244                 printf(" since %s; %s\n", s2, s1);
2245         else if (s2)
2246                 printf(" since %s\n", s2);
2247         else
2248                 printf("\n");
2249
2250         if (!i->condition_result && i->condition_timestamp > 0) {
2251                 s1 = format_timestamp_pretty(since1, sizeof(since1), i->condition_timestamp);
2252                 s2 = format_timestamp(since2, sizeof(since2), i->condition_timestamp);
2253
2254                 if (s1)
2255                         printf("\t          start condition failed at %s; %s\n", s2, s1);
2256                 else if (s2)
2257                         printf("\t          start condition failed at %s\n", s2);
2258         }
2259
2260         if (i->sysfs_path)
2261                 printf("\t  Device: %s\n", i->sysfs_path);
2262         if (i->where)
2263                 printf("\t   Where: %s\n", i->where);
2264         if (i->what)
2265                 printf("\t    What: %s\n", i->what);
2266
2267         if (i->accept)
2268                 printf("\tAccepted: %u; Connected: %u\n", i->n_accepted, i->n_connections);
2269
2270         LIST_FOREACH(exec, p, i->exec) {
2271                 char *t;
2272                 bool good;
2273
2274                 /* Only show exited processes here */
2275                 if (p->code == 0)
2276                         continue;
2277
2278                 t = strv_join(p->argv, " ");
2279                 printf("\t Process: %u %s=%s ", p->pid, p->name, strna(t));
2280                 free(t);
2281
2282 #ifdef HAVE_SYSV_COMPAT
2283                 if (i->is_sysv)
2284                         good = is_clean_exit_lsb(p->code, p->status);
2285                 else
2286 #endif
2287                         good = is_clean_exit(p->code, p->status);
2288
2289                 if (!good) {
2290                         on = ansi_highlight_red(true);
2291                         off = ansi_highlight_red(false);
2292                 } else
2293                         on = off = "";
2294
2295                 printf("%s(code=%s, ", on, sigchld_code_to_string(p->code));
2296
2297                 if (p->code == CLD_EXITED) {
2298                         const char *c;
2299
2300                         printf("status=%i", p->status);
2301
2302 #ifdef HAVE_SYSV_COMPAT
2303                         if ((c = exit_status_to_string(p->status, i->is_sysv ? EXIT_STATUS_LSB : EXIT_STATUS_SYSTEMD)))
2304 #else
2305                         if ((c = exit_status_to_string(p->status, EXIT_STATUS_SYSTEMD)))
2306 #endif
2307                                 printf("/%s", c);
2308
2309                 } else
2310                         printf("signal=%s", signal_to_string(p->status));
2311
2312                 printf(")%s\n", off);
2313
2314                 if (i->main_pid == p->pid &&
2315                     i->start_timestamp == p->start_timestamp &&
2316                     i->exit_timestamp == p->start_timestamp)
2317                         /* Let's not show this twice */
2318                         i->main_pid = 0;
2319
2320                 if (p->pid == i->control_pid)
2321                         i->control_pid = 0;
2322         }
2323
2324         if (i->main_pid > 0 || i->control_pid > 0) {
2325                 printf("\t");
2326
2327                 if (i->main_pid > 0) {
2328                         printf("Main PID: %u", (unsigned) i->main_pid);
2329
2330                         if (i->running) {
2331                                 char *t = NULL;
2332                                 get_process_comm(i->main_pid, &t);
2333                                 if (t) {
2334                                         printf(" (%s)", t);
2335                                         free(t);
2336                                 }
2337                         } else if (i->exit_code > 0) {
2338                                 printf(" (code=%s, ", sigchld_code_to_string(i->exit_code));
2339
2340                                 if (i->exit_code == CLD_EXITED) {
2341                                         const char *c;
2342
2343                                         printf("status=%i", i->exit_status);
2344
2345 #ifdef HAVE_SYSV_COMPAT
2346                                         if ((c = exit_status_to_string(i->exit_status, i->is_sysv ? EXIT_STATUS_LSB : EXIT_STATUS_SYSTEMD)))
2347 #else
2348                                         if ((c = exit_status_to_string(i->exit_status, EXIT_STATUS_SYSTEMD)))
2349 #endif
2350                                                 printf("/%s", c);
2351
2352                                 } else
2353                                         printf("signal=%s", signal_to_string(i->exit_status));
2354                                 printf(")");
2355                         }
2356                 }
2357
2358                 if (i->main_pid > 0 && i->control_pid > 0)
2359                         printf(";");
2360
2361                 if (i->control_pid > 0) {
2362                         char *t = NULL;
2363
2364                         printf(" Control: %u", (unsigned) i->control_pid);
2365
2366                         get_process_comm(i->control_pid, &t);
2367                         if (t) {
2368                                 printf(" (%s)", t);
2369                                 free(t);
2370                         }
2371                 }
2372
2373                 printf("\n");
2374         }
2375
2376         if (i->status_text)
2377                 printf("\t  Status: \"%s\"\n", i->status_text);
2378
2379         if (i->default_control_group) {
2380                 unsigned c;
2381
2382                 printf("\t  CGroup: %s\n", i->default_control_group);
2383
2384                 if (arg_transport != TRANSPORT_SSH) {
2385                         unsigned k = 0;
2386                         pid_t extra[2];
2387
2388                         c = columns();
2389                         if (c > 18)
2390                                 c -= 18;
2391                         else
2392                                 c = 0;
2393
2394                         if (i->main_pid > 0)
2395                                 extra[k++] = i->main_pid;
2396
2397                         if (i->control_pid > 0)
2398                                 extra[k++] = i->control_pid;
2399
2400                         show_cgroup_and_extra_by_spec(i->default_control_group, "\t\t  ", c, false, arg_all, extra, k);
2401                 }
2402         }
2403
2404         if (i->id && arg_transport != TRANSPORT_SSH) {
2405                 printf("\n");
2406                 show_journal_by_unit(i->id, arg_output, 0, i->inactive_exit_timestamp_monotonic, arg_lines, arg_all, arg_follow);
2407         }
2408
2409         if (i->need_daemon_reload)
2410                 printf("\n%sWarning:%s Unit file changed on disk, 'systemctl %s daemon-reload' recommended.\n",
2411                        ansi_highlight_red(true),
2412                        ansi_highlight_red(false),
2413                        arg_scope == UNIT_FILE_SYSTEM ? "--system" : "--user");
2414 }
2415
2416 static int status_property(const char *name, DBusMessageIter *iter, UnitStatusInfo *i) {
2417
2418         assert(name);
2419         assert(iter);
2420         assert(i);
2421
2422         switch (dbus_message_iter_get_arg_type(iter)) {
2423
2424         case DBUS_TYPE_STRING: {
2425                 const char *s;
2426
2427                 dbus_message_iter_get_basic(iter, &s);
2428
2429                 if (!isempty(s)) {
2430                         if (streq(name, "Id"))
2431                                 i->id = s;
2432                         else if (streq(name, "LoadState"))
2433                                 i->load_state = s;
2434                         else if (streq(name, "ActiveState"))
2435                                 i->active_state = s;
2436                         else if (streq(name, "SubState"))
2437                                 i->sub_state = s;
2438                         else if (streq(name, "Description"))
2439                                 i->description = s;
2440                         else if (streq(name, "FragmentPath"))
2441                                 i->path = s;
2442 #ifdef HAVE_SYSV_COMPAT
2443                         else if (streq(name, "SysVPath")) {
2444                                 i->is_sysv = true;
2445                                 i->path = s;
2446                         }
2447 #endif
2448                         else if (streq(name, "DefaultControlGroup"))
2449                                 i->default_control_group = s;
2450                         else if (streq(name, "StatusText"))
2451                                 i->status_text = s;
2452                         else if (streq(name, "SysFSPath"))
2453                                 i->sysfs_path = s;
2454                         else if (streq(name, "Where"))
2455                                 i->where = s;
2456                         else if (streq(name, "What"))
2457                                 i->what = s;
2458                         else if (streq(name, "Following"))
2459                                 i->following = s;
2460                         else if (streq(name, "UnitFileState"))
2461                                 i->unit_file_state = s;
2462                         else if (streq(name, "Result"))
2463                                 i->result = s;
2464                 }
2465
2466                 break;
2467         }
2468
2469         case DBUS_TYPE_BOOLEAN: {
2470                 dbus_bool_t b;
2471
2472                 dbus_message_iter_get_basic(iter, &b);
2473
2474                 if (streq(name, "Accept"))
2475                         i->accept = b;
2476                 else if (streq(name, "NeedDaemonReload"))
2477                         i->need_daemon_reload = b;
2478                 else if (streq(name, "ConditionResult"))
2479                         i->condition_result = b;
2480
2481                 break;
2482         }
2483
2484         case DBUS_TYPE_UINT32: {
2485                 uint32_t u;
2486
2487                 dbus_message_iter_get_basic(iter, &u);
2488
2489                 if (streq(name, "MainPID")) {
2490                         if (u > 0) {
2491                                 i->main_pid = (pid_t) u;
2492                                 i->running = true;
2493                         }
2494                 } else if (streq(name, "ControlPID"))
2495                         i->control_pid = (pid_t) u;
2496                 else if (streq(name, "ExecMainPID")) {
2497                         if (u > 0)
2498                                 i->main_pid = (pid_t) u;
2499                 } else if (streq(name, "NAccepted"))
2500                         i->n_accepted = u;
2501                 else if (streq(name, "NConnections"))
2502                         i->n_connections = u;
2503
2504                 break;
2505         }
2506
2507         case DBUS_TYPE_INT32: {
2508                 int32_t j;
2509
2510                 dbus_message_iter_get_basic(iter, &j);
2511
2512                 if (streq(name, "ExecMainCode"))
2513                         i->exit_code = (int) j;
2514                 else if (streq(name, "ExecMainStatus"))
2515                         i->exit_status = (int) j;
2516
2517                 break;
2518         }
2519
2520         case DBUS_TYPE_UINT64: {
2521                 uint64_t u;
2522
2523                 dbus_message_iter_get_basic(iter, &u);
2524
2525                 if (streq(name, "ExecMainStartTimestamp"))
2526                         i->start_timestamp = (usec_t) u;
2527                 else if (streq(name, "ExecMainExitTimestamp"))
2528                         i->exit_timestamp = (usec_t) u;
2529                 else if (streq(name, "ActiveEnterTimestamp"))
2530                         i->active_enter_timestamp = (usec_t) u;
2531                 else if (streq(name, "InactiveEnterTimestamp"))
2532                         i->inactive_enter_timestamp = (usec_t) u;
2533                 else if (streq(name, "InactiveExitTimestamp"))
2534                         i->inactive_exit_timestamp = (usec_t) u;
2535                 else if (streq(name, "InactiveExitTimestampMonotonic"))
2536                         i->inactive_exit_timestamp_monotonic = (usec_t) u;
2537                 else if (streq(name, "ActiveExitTimestamp"))
2538                         i->active_exit_timestamp = (usec_t) u;
2539                 else if (streq(name, "ConditionTimestamp"))
2540                         i->condition_timestamp = (usec_t) u;
2541
2542                 break;
2543         }
2544
2545         case DBUS_TYPE_ARRAY: {
2546
2547                 if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT &&
2548                     startswith(name, "Exec")) {
2549                         DBusMessageIter sub;
2550
2551                         dbus_message_iter_recurse(iter, &sub);
2552                         while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2553                                 ExecStatusInfo *info;
2554                                 int r;
2555
2556                                 if (!(info = new0(ExecStatusInfo, 1)))
2557                                         return -ENOMEM;
2558
2559                                 if (!(info->name = strdup(name))) {
2560                                         free(info);
2561                                         return -ENOMEM;
2562                                 }
2563
2564                                 if ((r = exec_status_info_deserialize(&sub, info)) < 0) {
2565                                         free(info);
2566                                         return r;
2567                                 }
2568
2569                                 LIST_PREPEND(ExecStatusInfo, exec, i->exec, info);
2570
2571                                 dbus_message_iter_next(&sub);
2572                         }
2573                 }
2574
2575                 break;
2576         }
2577
2578         case DBUS_TYPE_STRUCT: {
2579
2580                 if (streq(name, "LoadError")) {
2581                         DBusMessageIter sub;
2582                         const char *n, *message;
2583                         int r;
2584
2585                         dbus_message_iter_recurse(iter, &sub);
2586
2587                         r = bus_iter_get_basic_and_next(&sub, DBUS_TYPE_STRING, &n, true);
2588                         if (r < 0)
2589                                 return r;
2590
2591                         r = bus_iter_get_basic_and_next(&sub, DBUS_TYPE_STRING, &message, false);
2592                         if (r < 0)
2593                                 return r;
2594
2595                         if (!isempty(message))
2596                                 i->load_error = message;
2597                 }
2598
2599                 break;
2600         }
2601         }
2602
2603         return 0;
2604 }
2605
2606 static int print_property(const char *name, DBusMessageIter *iter) {
2607         assert(name);
2608         assert(iter);
2609
2610         /* This is a low-level property printer, see
2611          * print_status_info() for the nicer output */
2612
2613         if (arg_property && !strv_find(arg_property, name))
2614                 return 0;
2615
2616         switch (dbus_message_iter_get_arg_type(iter)) {
2617
2618         case DBUS_TYPE_STRUCT: {
2619                 DBusMessageIter sub;
2620                 dbus_message_iter_recurse(iter, &sub);
2621
2622                 if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_UINT32 && streq(name, "Job")) {
2623                         uint32_t u;
2624
2625                         dbus_message_iter_get_basic(&sub, &u);
2626
2627                         if (u)
2628                                 printf("%s=%u\n", name, (unsigned) u);
2629                         else if (arg_all)
2630                                 printf("%s=\n", name);
2631
2632                         return 0;
2633                 } else if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING && streq(name, "Unit")) {
2634                         const char *s;
2635
2636                         dbus_message_iter_get_basic(&sub, &s);
2637
2638                         if (arg_all || s[0])
2639                                 printf("%s=%s\n", name, s);
2640
2641                         return 0;
2642                 } else if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING && streq(name, "LoadError")) {
2643                         const char *a = NULL, *b = NULL;
2644
2645                         if (bus_iter_get_basic_and_next(&sub, DBUS_TYPE_STRING, &a, true) >= 0)
2646                                 bus_iter_get_basic_and_next(&sub, DBUS_TYPE_STRING, &b, false);
2647
2648                         if (arg_all || !isempty(a) || !isempty(b))
2649                                 printf("%s=%s \"%s\"\n", name, strempty(a), strempty(b));
2650
2651                         return 0;
2652                 }
2653
2654                 break;
2655         }
2656
2657         case DBUS_TYPE_ARRAY:
2658
2659                 if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "EnvironmentFiles")) {
2660                         DBusMessageIter sub, sub2;
2661
2662                         dbus_message_iter_recurse(iter, &sub);
2663                         while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2664                                 const char *path;
2665                                 dbus_bool_t ignore;
2666
2667                                 dbus_message_iter_recurse(&sub, &sub2);
2668
2669                                 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, true) >= 0 &&
2670                                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_BOOLEAN, &ignore, false) >= 0)
2671                                         printf("EnvironmentFile=%s (ignore_errors=%s)\n", path, yes_no(ignore));
2672
2673                                 dbus_message_iter_next(&sub);
2674                         }
2675
2676                         return 0;
2677
2678                 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Paths")) {
2679                         DBusMessageIter sub, sub2;
2680
2681                         dbus_message_iter_recurse(iter, &sub);
2682                         while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2683                                 const char *type, *path;
2684
2685                                 dbus_message_iter_recurse(&sub, &sub2);
2686
2687                                 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) >= 0 &&
2688                                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, false) >= 0)
2689                                         printf("%s=%s\n", type, path);
2690
2691                                 dbus_message_iter_next(&sub);
2692                         }
2693
2694                         return 0;
2695
2696                 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Timers")) {
2697                         DBusMessageIter sub, sub2;
2698
2699                         dbus_message_iter_recurse(iter, &sub);
2700                         while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2701                                 const char *base;
2702                                 uint64_t value, next_elapse;
2703
2704                                 dbus_message_iter_recurse(&sub, &sub2);
2705
2706                                 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &base, true) >= 0 &&
2707                                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &value, true) >= 0 &&
2708                                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &next_elapse, false) >= 0) {
2709                                         char timespan1[FORMAT_TIMESPAN_MAX], timespan2[FORMAT_TIMESPAN_MAX];
2710
2711                                         printf("%s={ value=%s ; next_elapse=%s }\n",
2712                                                base,
2713                                                format_timespan(timespan1, sizeof(timespan1), value),
2714                                                format_timespan(timespan2, sizeof(timespan2), next_elapse));
2715                                 }
2716
2717                                 dbus_message_iter_next(&sub);
2718                         }
2719
2720                         return 0;
2721
2722                 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "ControlGroupAttributes")) {
2723                         DBusMessageIter sub, sub2;
2724
2725                         dbus_message_iter_recurse(iter, &sub);
2726                         while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2727                                 const char *controller, *attr, *value;
2728
2729                                 dbus_message_iter_recurse(&sub, &sub2);
2730
2731                                 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &controller, true) >= 0 &&
2732                                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &attr, true) >= 0 &&
2733                                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &value, false) >= 0) {
2734
2735                                         printf("ControlGroupAttribute={ controller=%s ; attribute=%s ; value=\"%s\" }\n",
2736                                                controller,
2737                                                attr,
2738                                                value);
2739                                 }
2740
2741                                 dbus_message_iter_next(&sub);
2742                         }
2743
2744                         return 0;
2745
2746                 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && startswith(name, "Exec")) {
2747                         DBusMessageIter sub;
2748
2749                         dbus_message_iter_recurse(iter, &sub);
2750                         while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2751                                 ExecStatusInfo info;
2752
2753                                 zero(info);
2754                                 if (exec_status_info_deserialize(&sub, &info) >= 0) {
2755                                         char timestamp1[FORMAT_TIMESTAMP_MAX], timestamp2[FORMAT_TIMESTAMP_MAX];
2756                                         char *t;
2757
2758                                         t = strv_join(info.argv, " ");
2759
2760                                         printf("%s={ path=%s ; argv[]=%s ; ignore_errors=%s ; start_time=[%s] ; stop_time=[%s] ; pid=%u ; code=%s ; status=%i%s%s }\n",
2761                                                name,
2762                                                strna(info.path),
2763                                                strna(t),
2764                                                yes_no(info.ignore),
2765                                                strna(format_timestamp(timestamp1, sizeof(timestamp1), info.start_timestamp)),
2766                                                strna(format_timestamp(timestamp2, sizeof(timestamp2), info.exit_timestamp)),
2767                                                (unsigned) info. pid,
2768                                                sigchld_code_to_string(info.code),
2769                                                info.status,
2770                                                info.code == CLD_EXITED ? "" : "/",
2771                                                strempty(info.code == CLD_EXITED ? NULL : signal_to_string(info.status)));
2772
2773                                         free(t);
2774                                 }
2775
2776                                 free(info.path);
2777                                 strv_free(info.argv);
2778
2779                                 dbus_message_iter_next(&sub);
2780                         }
2781
2782                         return 0;
2783                 }
2784
2785                 break;
2786         }
2787
2788         if (generic_print_property(name, iter, arg_all) > 0)
2789                 return 0;
2790
2791         if (arg_all)
2792                 printf("%s=[unprintable]\n", name);
2793
2794         return 0;
2795 }
2796
2797 static int show_one(const char *verb, DBusConnection *bus, const char *path, bool show_properties, bool *new_line) {
2798         DBusMessage *m = NULL, *reply = NULL;
2799         const char *interface = "";
2800         int r;
2801         DBusError error;
2802         DBusMessageIter iter, sub, sub2, sub3;
2803         UnitStatusInfo info;
2804         ExecStatusInfo *p;
2805
2806         assert(bus);
2807         assert(path);
2808         assert(new_line);
2809
2810         zero(info);
2811         dbus_error_init(&error);
2812
2813         if (!(m = dbus_message_new_method_call(
2814                               "org.freedesktop.systemd1",
2815                               path,
2816                               "org.freedesktop.DBus.Properties",
2817                               "GetAll"))) {
2818                 log_error("Could not allocate message.");
2819                 r = -ENOMEM;
2820                 goto finish;
2821         }
2822
2823         if (!dbus_message_append_args(m,
2824                                       DBUS_TYPE_STRING, &interface,
2825                                       DBUS_TYPE_INVALID)) {
2826                 log_error("Could not append arguments to message.");
2827                 r = -ENOMEM;
2828                 goto finish;
2829         }
2830
2831         if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2832                 log_error("Failed to issue method call: %s", bus_error_message(&error));
2833                 r = -EIO;
2834                 goto finish;
2835         }
2836
2837         if (!dbus_message_iter_init(reply, &iter) ||
2838             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
2839             dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_DICT_ENTRY)  {
2840                 log_error("Failed to parse reply.");
2841                 r = -EIO;
2842                 goto finish;
2843         }
2844
2845         dbus_message_iter_recurse(&iter, &sub);
2846
2847         if (*new_line)
2848                 printf("\n");
2849
2850         *new_line = true;
2851
2852         while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
2853                 const char *name;
2854
2855                 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_DICT_ENTRY) {
2856                         log_error("Failed to parse reply.");
2857                         r = -EIO;
2858                         goto finish;
2859                 }
2860
2861                 dbus_message_iter_recurse(&sub, &sub2);
2862
2863                 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0) {
2864                         log_error("Failed to parse reply.");
2865                         r = -EIO;
2866                         goto finish;
2867                 }
2868
2869                 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT)  {
2870                         log_error("Failed to parse reply.");
2871                         r = -EIO;
2872                         goto finish;
2873                 }
2874
2875                 dbus_message_iter_recurse(&sub2, &sub3);
2876
2877                 if (show_properties)
2878                         r = print_property(name, &sub3);
2879                 else
2880                         r = status_property(name, &sub3, &info);
2881
2882                 if (r < 0) {
2883                         log_error("Failed to parse reply.");
2884                         r = -EIO;
2885                         goto finish;
2886                 }
2887
2888                 dbus_message_iter_next(&sub);
2889         }
2890
2891         r = 0;
2892
2893         if (!show_properties)
2894                 print_status_info(&info);
2895
2896         if (!streq_ptr(info.active_state, "active") &&
2897             !streq_ptr(info.active_state, "reloading") &&
2898             streq(verb, "status"))
2899                 /* According to LSB: "program not running" */
2900                 r = 3;
2901
2902         while ((p = info.exec)) {
2903                 LIST_REMOVE(ExecStatusInfo, exec, info.exec, p);
2904                 exec_status_info_free(p);
2905         }
2906
2907 finish:
2908         if (m)
2909                 dbus_message_unref(m);
2910
2911         if (reply)
2912                 dbus_message_unref(reply);
2913
2914         dbus_error_free(&error);
2915
2916         return r;
2917 }
2918
2919 static int show(DBusConnection *bus, char **args) {
2920         DBusMessage *m = NULL, *reply = NULL;
2921         int r, ret = 0;
2922         DBusError error;
2923         bool show_properties, new_line = false;
2924         char **name;
2925
2926         assert(bus);
2927         assert(args);
2928
2929         dbus_error_init(&error);
2930
2931         show_properties = !streq(args[0], "status");
2932
2933         if (show_properties)
2934                 pager_open_if_enabled();
2935
2936         if (show_properties && strv_length(args) <= 1) {
2937                 /* If not argument is specified inspect the manager
2938                  * itself */
2939
2940                 ret = show_one(args[0], bus, "/org/freedesktop/systemd1", show_properties, &new_line);
2941                 goto finish;
2942         }
2943
2944         STRV_FOREACH(name, args+1) {
2945                 const char *path = NULL;
2946                 uint32_t id;
2947
2948                 if (safe_atou32(*name, &id) < 0) {
2949
2950                         /* Interpret as unit name */
2951
2952                         if (!(m = dbus_message_new_method_call(
2953                                               "org.freedesktop.systemd1",
2954                                               "/org/freedesktop/systemd1",
2955                                               "org.freedesktop.systemd1.Manager",
2956                                               "LoadUnit"))) {
2957                                 log_error("Could not allocate message.");
2958                                 ret = -ENOMEM;
2959                                 goto finish;
2960                         }
2961
2962                         if (!dbus_message_append_args(m,
2963                                                       DBUS_TYPE_STRING, name,
2964                                                       DBUS_TYPE_INVALID)) {
2965                                 log_error("Could not append arguments to message.");
2966                                 ret = -ENOMEM;
2967                                 goto finish;
2968                         }
2969
2970                         if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2971
2972                                 if (!dbus_error_has_name(&error, DBUS_ERROR_ACCESS_DENIED)) {
2973                                         log_error("Failed to issue method call: %s", bus_error_message(&error));
2974                                         ret = -EIO;
2975                                         goto finish;
2976                                 }
2977
2978                                 dbus_error_free(&error);
2979
2980                                 dbus_message_unref(m);
2981                                 if (!(m = dbus_message_new_method_call(
2982                                                       "org.freedesktop.systemd1",
2983                                                       "/org/freedesktop/systemd1",
2984                                                       "org.freedesktop.systemd1.Manager",
2985                                                       "GetUnit"))) {
2986                                         log_error("Could not allocate message.");
2987                                         ret = -ENOMEM;
2988                                         goto finish;
2989                                 }
2990
2991                                 if (!dbus_message_append_args(m,
2992                                                               DBUS_TYPE_STRING, name,
2993                                                               DBUS_TYPE_INVALID)) {
2994                                         log_error("Could not append arguments to message.");
2995                                         ret = -ENOMEM;
2996                                         goto finish;
2997                                 }
2998
2999                                 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3000                                         log_error("Failed to issue method call: %s", bus_error_message(&error));
3001
3002                                         if (dbus_error_has_name(&error, BUS_ERROR_NO_SUCH_UNIT))
3003                                                 ret = 4; /* According to LSB: "program or service status is unknown" */
3004                                         else
3005                                                 ret = -EIO;
3006                                         goto finish;
3007                                 }
3008                         }
3009
3010                 } else if (show_properties) {
3011
3012                         /* Interpret as job id */
3013
3014                         if (!(m = dbus_message_new_method_call(
3015                                               "org.freedesktop.systemd1",
3016                                               "/org/freedesktop/systemd1",
3017                                               "org.freedesktop.systemd1.Manager",
3018                                               "GetJob"))) {
3019                                 log_error("Could not allocate message.");
3020                                 ret = -ENOMEM;
3021                                 goto finish;
3022                         }
3023
3024                         if (!dbus_message_append_args(m,
3025                                                       DBUS_TYPE_UINT32, &id,
3026                                                       DBUS_TYPE_INVALID)) {
3027                                 log_error("Could not append arguments to message.");
3028                                 ret = -ENOMEM;
3029                                 goto finish;
3030                         }
3031
3032                         if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3033                                 log_error("Failed to issue method call: %s", bus_error_message(&error));
3034                                 ret = -EIO;
3035                                 goto finish;
3036                         }
3037                 } else {
3038
3039                         /* Interpret as PID */
3040
3041                         if (!(m = dbus_message_new_method_call(
3042                                               "org.freedesktop.systemd1",
3043                                               "/org/freedesktop/systemd1",
3044                                               "org.freedesktop.systemd1.Manager",
3045                                               "GetUnitByPID"))) {
3046                                 log_error("Could not allocate message.");
3047                                 ret = -ENOMEM;
3048                                 goto finish;
3049                         }
3050
3051                         if (!dbus_message_append_args(m,
3052                                                       DBUS_TYPE_UINT32, &id,
3053                                                       DBUS_TYPE_INVALID)) {
3054                                 log_error("Could not append arguments to message.");
3055                                 ret = -ENOMEM;
3056                                 goto finish;
3057                         }
3058
3059                         if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3060                                 log_error("Failed to issue method call: %s", bus_error_message(&error));
3061                                 ret = -EIO;