src/systemctl/systemctl.c

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   2
   3 /***
   4   This file is part of systemd.
   5
   6   Copyright 2010 Lennart Poettering
   7   Copyright 2013 Marc-Antoine Perennou
   8
   9   systemd is free software; you can redistribute it and/or modify it
  10   under the terms of the GNU Lesser General Public License as published by
  11   the Free Software Foundation; either version 2.1 of the License, or
  12   (at your option) any later version.
  13
  14   systemd is distributed in the hope that it will be useful, but
  15   WITHOUT ANY WARRANTY; without even the implied warranty of
  16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  17   Lesser General Public License for more details.
  18
  19   You should have received a copy of the GNU Lesser General Public License
  20   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  21 ***/
  22
  23 #include <sys/reboot.h>
  24 #include <linux/reboot.h>
  25 #include <sys/syscall.h>
  26 #include <stdio.h>
  27 #include <getopt.h>
  28 #include <locale.h>
  29 #include <stdbool.h>
  30 #include <string.h>
  31 #include <errno.h>
  32 #include <sys/ioctl.h>
  33 #include <termios.h>
  34 #include <unistd.h>
  35 #include <fcntl.h>
  36 #include <sys/socket.h>
  37 #include <sys/stat.h>
  38 #include <stddef.h>
  39 #include <sys/prctl.h>
  40 #include <fnmatch.h>
  41
  42 #include "sd-daemon.h"
  43 #include "sd-shutdown.h"
  44 #include "sd-login.h"
  45 #include "sd-bus.h"
  46 #include "log.h"
  47 #include "util.h"
  48 #include "macro.h"
  49 #include "set.h"
  50 #include "utmp-wtmp.h"
  51 #include "special.h"
  52 #include "initreq.h"
  53 #include "path-util.h"
  54 #include "strv.h"
  55 #include "cgroup-show.h"
  56 #include "cgroup-util.h"
  57 #include "list.h"
  58 #include "path-lookup.h"
  59 #include "conf-parser.h"
  60 #include "exit-status.h"
  61 #include "bus-errors.h"
  62 #include "build.h"
  63 #include "unit-name.h"
  64 #include "pager.h"
  65 #include "spawn-ask-password-agent.h"
  66 #include "spawn-polkit-agent.h"
  67 #include "install.h"
  68 #include "logs-show.h"
  69 #include "socket-util.h"
  70 #include "fileio.h"
  71 #include "bus-util.h"
  72 #include "bus-message.h"
  73 #include "bus-error.h"
  74 #include "bus-errors.h"
  75
  76 static char **arg_types = NULL;
  77 static char **arg_states = NULL;
  78 static char **arg_properties = NULL;
  79 static bool arg_all = false;
  80 static bool original_stdout_is_tty;
  81 static enum dependency {
  82         DEPENDENCY_FORWARD,
  83         DEPENDENCY_REVERSE,
  84         DEPENDENCY_AFTER,
  85         DEPENDENCY_BEFORE,
  86         _DEPENDENCY_MAX
  87 } arg_dependency = DEPENDENCY_FORWARD;
  88 static const char *arg_job_mode = "replace";
  89 static UnitFileScope arg_scope = UNIT_FILE_SYSTEM;
  90 static bool arg_no_block = false;
  91 static bool arg_no_legend = false;
  92 static bool arg_no_pager = false;
  93 static bool arg_no_wtmp = false;
  94 static bool arg_no_wall = false;
  95 static bool arg_no_reload = false;
  96 static bool arg_show_types = false;
  97 static bool arg_ignore_inhibitors = false;
  98 static bool arg_dry = false;
  99 static bool arg_quiet = false;
 100 static bool arg_full = false;
 101 static int arg_force = 0;
 102 static bool arg_ask_password = true;
 103 static bool arg_runtime = false;
 104 static char **arg_wall = NULL;
 105 static const char *arg_kill_who = NULL;
 106 static int arg_signal = SIGTERM;
 107 static const char *arg_root = NULL;
 108 static usec_t arg_when = 0;
 109 static enum action {
 110         _ACTION_INVALID,
 111         ACTION_SYSTEMCTL,
 112         ACTION_HALT,
 113         ACTION_POWEROFF,
 114         ACTION_REBOOT,
 115         ACTION_KEXEC,
 116         ACTION_EXIT,
 117         ACTION_SUSPEND,
 118         ACTION_HIBERNATE,
 119         ACTION_HYBRID_SLEEP,
 120         ACTION_RUNLEVEL2,
 121         ACTION_RUNLEVEL3,
 122         ACTION_RUNLEVEL4,
 123         ACTION_RUNLEVEL5,
 124         ACTION_RESCUE,
 125         ACTION_EMERGENCY,
 126         ACTION_DEFAULT,
 127         ACTION_RELOAD,
 128         ACTION_REEXEC,
 129         ACTION_RUNLEVEL,
 130         ACTION_CANCEL_SHUTDOWN,
 131         _ACTION_MAX
 132 } arg_action = ACTION_SYSTEMCTL;
 133 static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;
 134 static char *arg_host = NULL;
 135 static unsigned arg_lines = 10;
 136 static OutputMode arg_output = OUTPUT_SHORT;
 137 static bool arg_plain = false;
 138 static const struct {
 139         const char *verb;
 140         const char *method;
 141 } unit_actions[] = {
 142         { "start",                 "StartUnit" },
 143         { "stop",                  "StopUnit" },
 144         { "condstop",              "StopUnit" },
 145         { "reload",                "ReloadUnit" },
 146         { "restart",               "RestartUnit" },
 147         { "try-restart",           "TryRestartUnit" },
 148         { "condrestart",           "TryRestartUnit" },
 149         { "reload-or-restart",     "ReloadOrRestartUnit" },
 150         { "reload-or-try-restart", "ReloadOrTryRestartUnit" },
 151         { "condreload",            "ReloadOrTryRestartUnit" },
 152         { "force-reload",          "ReloadOrTryRestartUnit" }
 153 };
 154
 155 static int daemon_reload(sd_bus *bus, char **args);
 156 static int halt_now(enum action a);
 157
 158 static int check_one_unit(sd_bus *bus, const char *name, const char *good_states, bool quiet);
 159
 160 static char** strv_skip_first(char **strv) {
 161         if (strv_length(strv) > 0)
 162                 return strv + 1;
 163         return NULL;
 164 }
 165
 166 static void pager_open_if_enabled(void) {
 167
 168         if (arg_no_pager)
 169                 return;
 170
 171         pager_open(false);
 172 }
 173
 174 static void ask_password_agent_open_if_enabled(void) {
 175
 176         /* Open the password agent as a child process if necessary */
 177
 178         if (!arg_ask_password)
 179                 return;
 180
 181         if (arg_scope != UNIT_FILE_SYSTEM)
 182                 return;
 183
 184         if (arg_transport != BUS_TRANSPORT_LOCAL)
 185                 return;
 186
 187         ask_password_agent_open();
 188 }
 189
 190 #ifdef HAVE_LOGIND
 191 static void polkit_agent_open_if_enabled(void) {
 192
 193         /* Open the polkit agent as a child process if necessary */
 194
 195         if (!arg_ask_password)
 196                 return;
 197
 198         if (arg_scope != UNIT_FILE_SYSTEM)
 199                 return;
 200
 201         if (arg_transport != BUS_TRANSPORT_LOCAL)
 202                 return;
 203
 204         polkit_agent_open();
 205 }
 206 #endif
 207
 208 static int translate_bus_error_to_exit_status(int r, const sd_bus_error *error) {
 209         assert(error);
 210
 211         if (!sd_bus_error_is_set(error))
 212                 return r;
 213
 214         if (sd_bus_error_has_name(error, SD_BUS_ERROR_ACCESS_DENIED) ||
 215             sd_bus_error_has_name(error, BUS_ERROR_ONLY_BY_DEPENDENCY) ||
 216             sd_bus_error_has_name(error, BUS_ERROR_NO_ISOLATION) ||
 217             sd_bus_error_has_name(error, BUS_ERROR_TRANSACTION_IS_DESTRUCTIVE))
 218                 return EXIT_NOPERMISSION;
 219
 220         if (sd_bus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT))
 221                 return EXIT_NOTINSTALLED;
 222
 223         if (sd_bus_error_has_name(error, BUS_ERROR_JOB_TYPE_NOT_APPLICABLE) ||
 224             sd_bus_error_has_name(error, SD_BUS_ERROR_NOT_SUPPORTED))
 225                 return EXIT_NOTIMPLEMENTED;
 226
 227         if (sd_bus_error_has_name(error, BUS_ERROR_LOAD_FAILED))
 228                 return EXIT_NOTCONFIGURED;
 229
 230         if (r != 0)
 231                 return r;
 232
 233         return EXIT_FAILURE;
 234 }
 235
 236 static void warn_wall(enum action a) {
 237         static const char *table[_ACTION_MAX] = {
 238                 [ACTION_HALT]            = "The system is going down for system halt NOW!",
 239                 [ACTION_REBOOT]          = "The system is going down for reboot NOW!",
 240                 [ACTION_POWEROFF]        = "The system is going down for power-off NOW!",
 241                 [ACTION_KEXEC]           = "The system is going down for kexec reboot NOW!",
 242                 [ACTION_RESCUE]          = "The system is going down to rescue mode NOW!",
 243                 [ACTION_EMERGENCY]       = "The system is going down to emergency mode NOW!",
 244                 [ACTION_CANCEL_SHUTDOWN] = "The system shutdown has been cancelled NOW!"
 245         };
 246
 247         if (arg_no_wall)
 248                 return;
 249
 250         if (arg_wall) {
 251                 _cleanup_free_ char *p;
 252
 253                 p = strv_join(arg_wall, " ");
 254                 if (!p) {
 255                         log_oom();
 256                         return;
 257                 }
 258
 259                 if (*p) {
 260                         utmp_wall(p, NULL);
 261                         return;
 262                 }
 263         }
 264
 265         if (!table[a])
 266                 return;
 267
 268         utmp_wall(table[a], NULL);
 269 }
 270
 271 static bool avoid_bus(void) {
 272
 273         if (running_in_chroot() > 0)
 274                 return true;
 275
 276         if (sd_booted() <= 0)
 277                 return true;
 278
 279         if (!isempty(arg_root))
 280                 return true;
 281
 282         if (arg_scope == UNIT_FILE_GLOBAL)
 283                 return true;
 284
 285         return false;
 286 }
 287
 288 static int compare_unit_info(const void *a, const void *b) {
 289         const UnitInfo *u = a, *v = b;
 290         const char *d1, *d2;
 291
 292         d1 = strrchr(u->id, '.');
 293         d2 = strrchr(v->id, '.');
 294
 295         if (d1 && d2) {
 296                 int r;
 297
 298                 r = strcasecmp(d1, d2);
 299                 if (r != 0)
 300                         return r;
 301         }
 302
 303         return strcasecmp(u->id, v->id);
 304 }
 305
 306 static bool output_show_unit(const UnitInfo *u, char **patterns) {
 307         const char *dot;
 308
 309         if (!strv_isempty(arg_states))
 310                 return
 311                         strv_contains(arg_states, u->load_state) ||
 312                         strv_contains(arg_states, u->sub_state) ||
 313                         strv_contains(arg_states, u->active_state);
 314
 315         if (!strv_isempty(patterns)) {
 316                 char **pattern;
 317
 318                 STRV_FOREACH(pattern, patterns)
 319                         if (fnmatch(*pattern, u->id, FNM_NOESCAPE) == 0)
 320                                 return true;
 321                 return false;
 322         }
 323
 324         return (!arg_types || ((dot = strrchr(u->id, '.')) &&
 325                                strv_find(arg_types, dot+1))) &&
 326                 (arg_all || !(streq(u->active_state, "inactive")
 327                               || u->following[0]) || u->job_id > 0);
 328 }
 329
 330 static void output_units_list(const UnitInfo *unit_infos, unsigned c) {
 331         unsigned id_len, max_id_len, load_len, active_len, sub_len, job_len, desc_len;
 332         const UnitInfo *u;
 333         unsigned n_shown = 0;
 334         int job_count = 0;
 335
 336         max_id_len = sizeof("UNIT")-1;
 337         load_len = sizeof("LOAD")-1;
 338         active_len = sizeof("ACTIVE")-1;
 339         sub_len = sizeof("SUB")-1;
 340         job_len = sizeof("JOB")-1;
 341         desc_len = 0;
 342
 343         for (u = unit_infos; u < unit_infos + c; u++) {
 344                 max_id_len = MAX(max_id_len, strlen(u->id));
 345                 load_len = MAX(load_len, strlen(u->load_state));
 346                 active_len = MAX(active_len, strlen(u->active_state));
 347                 sub_len = MAX(sub_len, strlen(u->sub_state));
 348
 349                 if (u->job_id != 0) {
 350                         job_len = MAX(job_len, strlen(u->job_type));
 351                         job_count++;
 352                 }
 353         }
 354
 355         if (!arg_full && original_stdout_is_tty) {
 356                 unsigned basic_len;
 357
 358                 id_len = MIN(max_id_len, 25u);
 359                 basic_len = 5 + id_len + 5 + active_len + sub_len;
 360
 361                 if (job_count)
 362                         basic_len += job_len + 1;
 363
 364                 if (basic_len < (unsigned) columns()) {
 365                         unsigned extra_len, incr;
 366                         extra_len = columns() - basic_len;
 367
 368                         /* Either UNIT already got 25, or is fully satisfied.
 369                          * Grant up to 25 to DESC now. */
 370                         incr = MIN(extra_len, 25u);
 371                         desc_len += incr;
 372                         extra_len -= incr;
 373
 374                         /* split the remaining space between UNIT and DESC,
 375                          * but do not give UNIT more than it needs. */
 376                         if (extra_len > 0) {
 377                                 incr = MIN(extra_len / 2, max_id_len - id_len);
 378                                 id_len += incr;
 379                                 desc_len += extra_len - incr;
 380                         }
 381                 }
 382         } else
 383                 id_len = max_id_len;
 384
 385         for (u = unit_infos; u < unit_infos + c; u++) {
 386                 _cleanup_free_ char *e = NULL;
 387                 const char *on_loaded, *off_loaded, *on = "";
 388                 const char *on_active, *off_active, *off = "";
 389
 390                 if (!n_shown && !arg_no_legend) {
 391                         printf("%-*s %-*s %-*s %-*s ",
 392                                id_len, "UNIT",
 393                                load_len, "LOAD",
 394                                active_len, "ACTIVE",
 395                                sub_len, "SUB");
 396
 397                         if (job_count)
 398                                 printf("%-*s ", job_len, "JOB");
 399
 400                         if (!arg_full && arg_no_pager)
 401                                 printf("%.*s\n", desc_len, "DESCRIPTION");
 402                         else
 403                                 printf("%s\n", "DESCRIPTION");
 404                 }
 405
 406                 n_shown++;
 407
 408                 if (streq(u->load_state, "error") ||
 409                     streq(u->load_state, "not-found")) {
 410                         on_loaded = on = ansi_highlight_red();
 411                         off_loaded = off = ansi_highlight_off();
 412                 } else
 413                         on_loaded = off_loaded = "";
 414
 415                 if (streq(u->active_state, "failed")) {
 416                         on_active = on = ansi_highlight_red();
 417                         off_active = off = ansi_highlight_off();
 418                 } else
 419                         on_active = off_active = "";
 420
 421                 e = arg_full ? NULL : ellipsize(u->id, id_len, 33);
 422
 423                 printf("%s%-*s%s %s%-*s%s %s%-*s %-*s%s %-*s",
 424                        on, id_len, e ? e : u->id, off,
 425                        on_loaded, load_len, u->load_state, off_loaded,
 426                        on_active, active_len, u->active_state,
 427                        sub_len, u->sub_state, off_active,
 428                        job_count ? job_len + 1 : 0, u->job_id ? u->job_type : "");
 429
 430                 if (desc_len > 0)
 431                         printf("%.*s\n", desc_len, u->description);
 432                 else
 433                         printf("%s\n", u->description);
 434         }
 435
 436         if (!arg_no_legend) {
 437                 const char *on, *off;
 438
 439                 if (n_shown) {
 440                         puts("\nLOAD   = Reflects whether the unit definition was properly loaded.\n"
 441                              "ACTIVE = The high-level unit activation state, i.e. generalization of SUB.\n"
 442                              "SUB    = The low-level unit activation state, values depend on unit type.");
 443                         puts(job_count ? "JOB    = Pending job for the unit.\n" : "");
 444                         on = ansi_highlight();
 445                         off = ansi_highlight_off();
 446                 } else {
 447                         on = ansi_highlight_red();
 448                         off = ansi_highlight_off();
 449                 }
 450
 451                 if (arg_all)
 452                         printf("%s%u loaded units listed.%s\n"
 453                                "To show all installed unit files use 'systemctl list-unit-files'.\n",
 454                                on, n_shown, off);
 455                 else
 456                         printf("%s%u loaded units listed.%s Pass --all to see loaded but inactive units, too.\n"
 457                                "To show all installed unit files use 'systemctl list-unit-files'.\n",
 458                                on, n_shown, off);
 459         }
 460 }
 461
 462 static int get_unit_list(
 463                 sd_bus *bus,
 464                 sd_bus_message **_reply,
 465                 UnitInfo **_unit_infos,
 466                 char **patterns) {
 467
 468         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
 469         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
 470         _cleanup_free_ UnitInfo *unit_infos = NULL;
 471         size_t size = 0;
 472         int r, c = 0;
 473         UnitInfo u;
 474
 475         assert(bus);
 476         assert(_reply);
 477         assert(_unit_infos);
 478
 479         r = sd_bus_call_method(
 480                         bus,
 481                         "org.freedesktop.systemd1",
 482                         "/org/freedesktop/systemd1",
 483                         "org.freedesktop.systemd1.Manager",
 484                         "ListUnits",
 485                         &error,
 486                         &reply,
 487                         NULL);
 488         if (r < 0) {
 489                 log_error("Failed to list units: %s", bus_error_message(&error, r));
 490                 return r;
 491         }
 492
 493         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssssouso)");
 494         if (r < 0)
 495                 return bus_log_parse_error(r);
 496
 497         while ((r = bus_parse_unit_info(reply, &u)) > 0) {
 498                 if (!output_show_unit(&u, patterns))
 499                         continue;
 500
 501                 if (!GREEDY_REALLOC(unit_infos, size, c+1))
 502                         return log_oom();
 503
 504                 unit_infos[c++] = u;
 505         }
 506         if (r < 0)
 507                 return bus_log_parse_error(r);
 508
 509         r = sd_bus_message_exit_container(reply);
 510         if (r < 0)
 511                 return bus_log_parse_error(r);
 512
 513         *_reply = reply;
 514         reply = NULL;
 515
 516         *_unit_infos = unit_infos;
 517         unit_infos = NULL;
 518
 519         return c;
 520 }
 521
 522 static int list_units(sd_bus *bus, char **args) {
 523         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
 524         _cleanup_free_ UnitInfo *unit_infos = NULL;
 525         int r;
 526
 527         pager_open_if_enabled();
 528
 529         r = get_unit_list(bus, &reply, &unit_infos, strv_skip_first(args));
 530         if (r < 0)
 531                 return r;
 532
 533         qsort_safe(unit_infos, r, sizeof(UnitInfo), compare_unit_info);
 534         output_units_list(unit_infos, r);
 535
 536         return 0;
 537 }
 538
 539 static int get_triggered_units(
 540                 sd_bus *bus,
 541                 const char* path,
 542                 char*** ret) {
 543
 544         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
 545         int r;
 546
 547         r = sd_bus_get_property_strv(
 548                         bus,
 549                         "org.freedesktop.systemd1",
 550                         path,
 551                         "org.freedesktop.systemd1.Unit",
 552                         "Triggers",
 553                         &error,
 554                         ret);
 555
 556         if (r < 0)
 557                 log_error("Failed to determine triggers: %s", bus_error_message(&error, r));
 558
 559         return 0;
 560 }
 561
 562 static int get_listening(
 563                 sd_bus *bus,
 564                 const char* unit_path,
 565                 char*** listening) {
 566
 567         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
 568         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
 569         const char *type, *path;
 570         int r, n = 0;
 571
 572         r = sd_bus_get_property(
 573                         bus,
 574                         "org.freedesktop.systemd1",
 575                         unit_path,
 576                         "org.freedesktop.systemd1.Socket",
 577                         "Listen",
 578                         &error,
 579                         &reply,
 580                         "a(ss)");
 581         if (r < 0) {
 582                 log_error("Failed to get list of listening sockets: %s", bus_error_message(&error, r));
 583                 return r;
 584         }
 585
 586         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ss)");
 587         if (r < 0)
 588                 return bus_log_parse_error(r);
 589
 590         while ((r = sd_bus_message_read(reply, "(ss)", &type, &path)) > 0) {
 591
 592                 r = strv_extend(listening, type);
 593                 if (r < 0)
 594                         return log_oom();
 595
 596                 r = strv_extend(listening, path);
 597                 if (r < 0)
 598                         return log_oom();
 599
 600                 n++;
 601         }
 602         if (r < 0)
 603                 return bus_log_parse_error(r);
 604
 605         r = sd_bus_message_exit_container(reply);
 606         if (r < 0)
 607                 return bus_log_parse_error(r);
 608
 609         return n;
 610 }
 611
 612 struct socket_info {
 613         const char* id;
 614
 615         char* type;
 616         char* path;
 617
 618         /* Note: triggered is a list here, although it almost certainly
 619          * will always be one unit. Nevertheless, dbus API allows for multiple
 620          * values, so let's follow that.*/
 621         char** triggered;
 622
 623         /* The strv above is shared. free is set only in the first one. */
 624         bool own_triggered;
 625 };
 626
 627 static int socket_info_compare(const struct socket_info *a, const struct socket_info *b) {
 628         int o;
 629
 630         assert(a);
 631         assert(b);
 632
 633         o = strcmp(a->path, b->path);
 634         if (o == 0)
 635                 o = strcmp(a->type, b->type);
 636
 637         return o;
 638 }
 639
 640 static int output_sockets_list(struct socket_info *socket_infos, unsigned cs) {
 641         struct socket_info *s;
 642         unsigned pathlen = sizeof("LISTEN") - 1,
 643                 typelen = (sizeof("TYPE") - 1) * arg_show_types,
 644                 socklen = sizeof("UNIT") - 1,
 645                 servlen = sizeof("ACTIVATES") - 1;
 646         const char *on, *off;
 647
 648         for (s = socket_infos; s < socket_infos + cs; s++) {
 649                 unsigned tmp = 0;
 650                 char **a;
 651
 652                 socklen = MAX(socklen, strlen(s->id));
 653                 if (arg_show_types)
 654                         typelen = MAX(typelen, strlen(s->type));
 655                 pathlen = MAX(pathlen, strlen(s->path));
 656
 657                 STRV_FOREACH(a, s->triggered)
 658                         tmp += strlen(*a) + 2*(a != s->triggered);
 659                 servlen = MAX(servlen, tmp);
 660         }
 661
 662         if (cs) {
 663                 if (!arg_no_legend)
 664                         printf("%-*s %-*.*s%-*s %s\n",
 665                                pathlen, "LISTEN",
 666                                typelen + arg_show_types, typelen + arg_show_types, "TYPE ",
 667                                socklen, "UNIT",
 668                                "ACTIVATES");
 669
 670                 for (s = socket_infos; s < socket_infos + cs; s++) {
 671                         char **a;
 672
 673                         if (arg_show_types)
 674                                 printf("%-*s %-*s %-*s",
 675                                        pathlen, s->path, typelen, s->type, socklen, s->id);
 676                         else
 677                                 printf("%-*s %-*s",
 678                                        pathlen, s->path, socklen, s->id);
 679                         STRV_FOREACH(a, s->triggered)
 680                                 printf("%s %s",
 681                                        a == s->triggered ? "" : ",", *a);
 682                         printf("\n");
 683                 }
 684
 685                 on = ansi_highlight();
 686                 off = ansi_highlight_off();
 687                 if (!arg_no_legend)
 688                         printf("\n");
 689         } else {
 690                 on = ansi_highlight_red();
 691                 off = ansi_highlight_off();
 692         }
 693
 694         if (!arg_no_legend) {
 695                 printf("%s%u sockets listed.%s\n", on, cs, off);
 696                 if (!arg_all)
 697                         printf("Pass --all to see loaded but inactive sockets, too.\n");
 698         }
 699
 700         return 0;
 701 }
 702
 703 static int list_sockets(sd_bus *bus, char **args) {
 704         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
 705         _cleanup_free_ UnitInfo *unit_infos = NULL;
 706         _cleanup_free_ struct socket_info *socket_infos = NULL;
 707         const UnitInfo *u;
 708         struct socket_info *s;
 709         unsigned cs = 0;
 710         size_t size = 0;
 711         int r = 0, n;
 712
 713         pager_open_if_enabled();
 714
 715         n = get_unit_list(bus, &reply, &unit_infos, strv_skip_first(args));
 716         if (n < 0)
 717                 return n;
 718
 719         for (u = unit_infos; u < unit_infos + n; u++) {
 720                 _cleanup_strv_free_ char **listening = NULL, **triggered = NULL;
 721                 int i, c;
 722
 723                 if (!endswith(u->id, ".socket"))
 724                         continue;
 725
 726                 r = get_triggered_units(bus, u->unit_path, &triggered);
 727                 if (r < 0)
 728                         goto cleanup;
 729
 730                 c = get_listening(bus, u->unit_path, &listening);
 731                 if (c < 0) {
 732                         r = c;
 733                         goto cleanup;
 734                 }
 735
 736                 if (!GREEDY_REALLOC(socket_infos, size, cs + c)) {
 737                         r = log_oom();
 738                         goto cleanup;
 739                 }
 740
 741                 for (i = 0; i < c; i++)
 742                         socket_infos[cs + i] = (struct socket_info) {
 743                                 .id = u->id,
 744                                 .type = listening[i*2],
 745                                 .path = listening[i*2 + 1],
 746                                 .triggered = triggered,
 747                                 .own_triggered = i==0,
 748                         };
 749
 750                 /* from this point on we will cleanup those socket_infos */
 751                 cs += c;
 752                 free(listening);
 753                 listening = triggered = NULL; /* avoid cleanup */
 754         }
 755
 756         qsort_safe(socket_infos, cs, sizeof(struct socket_info),
 757                    (__compar_fn_t) socket_info_compare);
 758
 759         output_sockets_list(socket_infos, cs);
 760
 761  cleanup:
 762         assert(cs == 0 || socket_infos);
 763         for (s = socket_infos; s < socket_infos + cs; s++) {
 764                 free(s->type);
 765                 free(s->path);
 766                 if (s->own_triggered)
 767                         strv_free(s->triggered);
 768         }
 769
 770         return r;
 771 }
 772
 773 static int get_next_elapse(
 774                 sd_bus *bus,
 775                 const char *path,
 776                 dual_timestamp *next) {
 777
 778         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
 779         dual_timestamp t;
 780         int r;
 781
 782         assert(bus);
 783         assert(path);
 784         assert(next);
 785
 786         r = sd_bus_get_property_trivial(
 787                         bus,
 788                         "org.freedesktop.systemd1",
 789                         path,
 790                         "org.freedesktop.systemd1.Timer",
 791                         "NextElapseUSecMonotonic",
 792                         &error,
 793                         't',
 794                         &t.monotonic);
 795         if (r < 0) {
 796                 log_error("Failed to get next elapsation time: %s", bus_error_message(&error, r));
 797                 return r;
 798         }
 799
 800         r = sd_bus_get_property_trivial(
 801                         bus,
 802                         "org.freedesktop.systemd1",
 803                         path,
 804                         "org.freedesktop.systemd1.Timer",
 805                         "NextElapseUSecRealtime",
 806                         &error,
 807                         't',
 808                         &t.realtime);
 809         if (r < 0) {
 810                 log_error("Failed to get next elapsation time: %s", bus_error_message(&error, r));
 811                 return r;
 812         }
 813
 814         *next = t;
 815         return 0;
 816 }
 817
 818 struct timer_info {
 819         const char* id;
 820         usec_t next_elapse;
 821         char** triggered;
 822 };
 823
 824 static int timer_info_compare(const struct timer_info *a, const struct timer_info *b) {
 825         assert(a);
 826         assert(b);
 827
 828         if (a->next_elapse < b->next_elapse)
 829                 return -1;
 830         if (a->next_elapse > b->next_elapse)
 831                 return 1;
 832
 833         return strcmp(a->id, b->id);
 834 }
 835
 836 static int output_timers_list(struct timer_info *timer_infos, unsigned n) {
 837         struct timer_info *t;
 838         unsigned
 839                 nextlen = sizeof("NEXT") - 1,
 840                 leftlen = sizeof("LEFT") - 1,
 841                 unitlen = sizeof("UNIT") - 1,
 842                 activatelen = sizeof("ACTIVATES") - 1;
 843
 844         const char *on, *off;
 845
 846         assert(timer_infos || n == 0);
 847
 848         for (t = timer_infos; t < timer_infos + n; t++) {
 849                 unsigned ul = 0;
 850                 char **a;
 851
 852                 if (t->next_elapse > 0) {
 853                         char tstamp[FORMAT_TIMESTAMP_MAX] = "", trel[FORMAT_TIMESTAMP_RELATIVE_MAX] = "";
 854
 855                         format_timestamp(tstamp, sizeof(tstamp), t->next_elapse);
 856                         nextlen = MAX(nextlen, strlen(tstamp) + 1);
 857
 858                         format_timestamp_relative(trel, sizeof(trel), t->next_elapse);
 859                         leftlen = MAX(leftlen, strlen(trel));
 860                 }
 861
 862                 unitlen = MAX(unitlen, strlen(t->id));
 863
 864                 STRV_FOREACH(a, t->triggered)
 865                         ul += strlen(*a) + 2*(a != t->triggered);
 866                 activatelen = MAX(activatelen, ul);
 867         }
 868
 869         if (n > 0) {
 870                 if (!arg_no_legend)
 871                         printf("%-*s %-*s %-*s %s\n",
 872                                nextlen, "NEXT",
 873                                leftlen, "LEFT",
 874                                unitlen, "UNIT",
 875                                         "ACTIVATES");
 876
 877                 for (t = timer_infos; t < timer_infos + n; t++) {
 878                         char tstamp[FORMAT_TIMESTAMP_MAX] = "n/a", trel[FORMAT_TIMESTAMP_RELATIVE_MAX] = "n/a";
 879                         char **a;
 880
 881                         format_timestamp(tstamp, sizeof(tstamp), t->next_elapse);
 882                         format_timestamp_relative(trel, sizeof(trel), t->next_elapse);
 883
 884                         printf("%-*s %-*s %-*s",
 885                                nextlen, tstamp, leftlen, trel, unitlen, t->id);
 886
 887                         STRV_FOREACH(a, t->triggered)
 888                                 printf("%s %s",
 889                                        a == t->triggered ? "" : ",", *a);
 890                         printf("\n");
 891                 }
 892
 893                 on = ansi_highlight();
 894                 off = ansi_highlight_off();
 895                 if (!arg_no_legend)
 896                         printf("\n");
 897         } else {
 898                 on = ansi_highlight_red();
 899                 off = ansi_highlight_off();
 900         }
 901
 902         if (!arg_no_legend) {
 903                 printf("%s%u timers listed.%s\n", on, n, off);
 904                 if (!arg_all)
 905                         printf("Pass --all to see loaded but inactive timers, too.\n");
 906         }
 907
 908         return 0;
 909 }
 910
 911 static int list_timers(sd_bus *bus, char **args) {
 912
 913         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
 914         _cleanup_free_ struct timer_info *timer_infos = NULL;
 915         _cleanup_free_ UnitInfo *unit_infos = NULL;
 916         struct timer_info *t;
 917         const UnitInfo *u;
 918         size_t size = 0;
 919         int n, c = 0;
 920         dual_timestamp nw;
 921         int r = 0;
 922
 923         pager_open_if_enabled();
 924
 925         n = get_unit_list(bus, &reply, &unit_infos, strv_skip_first(args));
 926         if (n < 0)
 927                 return n;
 928
 929         dual_timestamp_get(&nw);
 930
 931         for (u = unit_infos; u < unit_infos + n; u++) {
 932                 _cleanup_strv_free_ char **triggered = NULL;
 933                 dual_timestamp next;
 934                 usec_t m;
 935
 936                 if (!endswith(u->id, ".timer"))
 937                         continue;
 938
 939                 r = get_triggered_units(bus, u->unit_path, &triggered);
 940                 if (r < 0)
 941                         goto cleanup;
 942
 943                 r = get_next_elapse(bus, u->unit_path, &next);
 944                 if (r < 0)
 945                         goto cleanup;
 946
 947                 if (next.monotonic != (usec_t) -1 && next.monotonic > 0) {
 948                         usec_t converted;
 949
 950                         if (next.monotonic > nw.monotonic)
 951                                 converted = nw.realtime + (next.monotonic - nw.monotonic);
 952                         else
 953                                 converted = nw.realtime - (nw.monotonic - next.monotonic);
 954
 955                         if (next.realtime != (usec_t) -1 && next.realtime > 0)
 956                                 m = MIN(converted, next.realtime);
 957                         else
 958                                 m = converted;
 959                 } else
 960                         m = next.realtime;
 961
 962                 if (!GREEDY_REALLOC(timer_infos, size, c+1)) {
 963                         r = log_oom();
 964                         goto cleanup;
 965                 }
 966
 967                 timer_infos[c++] = (struct timer_info) {
 968                         .id = u->id,
 969                         .next_elapse = m,
 970                         .triggered = triggered,
 971                 };
 972
 973                 triggered = NULL; /* avoid cleanup */
 974         }
 975
 976         qsort_safe(timer_infos, c, sizeof(struct timer_info),
 977                    (__compar_fn_t) timer_info_compare);
 978
 979         output_timers_list(timer_infos, c);
 980
 981  cleanup:
 982         for (t = timer_infos; t < timer_infos + c; t++)
 983                 strv_free(t->triggered);
 984
 985         return r;
 986 }
 987
 988 static int compare_unit_file_list(const void *a, const void *b) {
 989         const char *d1, *d2;
 990         const UnitFileList *u = a, *v = b;
 991
 992         d1 = strrchr(u->path, '.');
 993         d2 = strrchr(v->path, '.');
 994
 995         if (d1 && d2) {
 996                 int r;
 997
 998                 r = strcasecmp(d1, d2);
 999                 if (r != 0)
1000                         return r;
1001         }
1002
1003         return strcasecmp(basename(u->path), basename(v->path));
1004 }
1005
1006 static bool output_show_unit_file(const UnitFileList *u, char **patterns) {
1007         const char *dot;
1008
1009         if (!strv_isempty(patterns)) {
1010                 char **pattern;
1011
1012                 STRV_FOREACH(pattern, patterns)
1013                         if (fnmatch(*pattern, basename(u->path), FNM_NOESCAPE) == 0)
1014                                 return true;
1015                 return false;
1016         }
1017
1018         return !arg_types || ((dot = strrchr(u->path, '.')) && strv_find(arg_types, dot+1));
1019 }
1020
1021 static void output_unit_file_list(const UnitFileList *units, unsigned c) {
1022         unsigned max_id_len, id_cols, state_cols, n_shown = 0;
1023         const UnitFileList *u;
1024
1025         max_id_len = sizeof("UNIT FILE")-1;
1026         state_cols = sizeof("STATE")-1;
1027
1028         for (u = units; u < units + c; u++) {
1029                 max_id_len = MAX(max_id_len, strlen(basename(u->path)));
1030                 state_cols = MAX(state_cols, strlen(unit_file_state_to_string(u->state)));
1031         }
1032
1033         if (!arg_full) {
1034                 unsigned basic_cols;
1035
1036                 id_cols = MIN(max_id_len, 25u);
1037                 basic_cols = 1 + id_cols + state_cols;
1038                 if (basic_cols < (unsigned) columns())
1039                         id_cols += MIN(columns() - basic_cols, max_id_len - id_cols);
1040         } else
1041                 id_cols = max_id_len;
1042
1043         if (!arg_no_legend)
1044                 printf("%-*s %-*s\n",
1045                        id_cols, "UNIT FILE",
1046                        state_cols, "STATE");
1047
1048         for (u = units; u < units + c; u++) {
1049                 _cleanup_free_ char *e = NULL;
1050                 const char *on, *off;
1051                 const char *id;
1052
1053                 n_shown++;
1054
1055                 if (u->state == UNIT_FILE_MASKED ||
1056                     u->state == UNIT_FILE_MASKED_RUNTIME ||
1057                     u->state == UNIT_FILE_DISABLED ||
1058                     u->state == UNIT_FILE_INVALID) {
1059                         on  = ansi_highlight_red();
1060                         off = ansi_highlight_off();
1061                 } else if (u->state == UNIT_FILE_ENABLED) {
1062                         on  = ansi_highlight_green();
1063                         off = ansi_highlight_off();
1064                 } else
1065                         on = off = "";
1066
1067                 id = basename(u->path);
1068
1069                 e = arg_full ? NULL : ellipsize(id, id_cols, 33);
1070
1071                 printf("%-*s %s%-*s%s\n",
1072                        id_cols, e ? e : id,
1073                        on, state_cols, unit_file_state_to_string(u->state), off);
1074         }
1075
1076         if (!arg_no_legend)
1077                 printf("\n%u unit files listed.\n", n_shown);
1078 }
1079
1080 static int list_unit_files(sd_bus *bus, char **args) {
1081         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1082         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1083         _cleanup_free_ UnitFileList *units = NULL;
1084         UnitFileList *unit;
1085         size_t size = 0;
1086         unsigned c = 0;
1087         const char *state;
1088         char *path;
1089         int r;
1090
1091         pager_open_if_enabled();
1092
1093         if (avoid_bus()) {
1094                 Hashmap *h;
1095                 UnitFileList *u;
1096                 Iterator i;
1097                 unsigned n_units;
1098
1099                 h = hashmap_new(string_hash_func, string_compare_func);
1100                 if (!h)
1101                         return log_oom();
1102
1103                 r = unit_file_get_list(arg_scope, arg_root, h);
1104                 if (r < 0) {
1105                         unit_file_list_free(h);
1106                         log_error("Failed to get unit file list: %s", strerror(-r));
1107                         return r;
1108                 }
1109
1110                 n_units = hashmap_size(h);
1111                 units = new(UnitFileList, n_units);
1112                 if (!units) {
1113                         unit_file_list_free(h);
1114                         return log_oom();
1115                 }
1116
1117                 HASHMAP_FOREACH(u, h, i) {
1118                         if (!output_show_unit_file(u, strv_skip_first(args)))
1119                                 continue;
1120
1121                         units[c++] = *u;
1122                         free(u);
1123                 }
1124
1125                 assert(c <= n_units);
1126                 hashmap_free(h);
1127         } else {
1128                 r = sd_bus_call_method(
1129                                 bus,
1130                                 "org.freedesktop.systemd1",
1131                                 "/org/freedesktop/systemd1",
1132                                 "org.freedesktop.systemd1.Manager",
1133                                 "ListUnitFiles",
1134                                 &error,
1135                                 &reply,
1136                                 NULL);
1137                 if (r < 0) {
1138                         log_error("Failed to list unit files: %s", bus_error_message(&error, r));
1139                         return r;
1140                 }
1141
1142                 r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ss)");
1143                 if (r < 0)
1144                         return bus_log_parse_error(r);
1145
1146                 while ((r = sd_bus_message_read(reply, "(ss)", &path, &state)) > 0) {
1147
1148                         if (!GREEDY_REALLOC(units, size, c + 1))
1149                                 return log_oom();
1150
1151                         units[c] = (struct UnitFileList) {
1152                                 path,
1153                                 unit_file_state_from_string(state)
1154                         };
1155
1156                         if (output_show_unit_file(&units[c], strv_skip_first(args)))
1157                                 c ++;
1158
1159                 }
1160                 if (r < 0)
1161                         return bus_log_parse_error(r);
1162
1163                 r = sd_bus_message_exit_container(reply);
1164                 if (r < 0)
1165                         return bus_log_parse_error(r);
1166         }
1167
1168         if (c > 0) {
1169                 qsort(units, c, sizeof(UnitFileList), compare_unit_file_list);
1170                 output_unit_file_list(units, c);
1171         }
1172
1173         if (avoid_bus())
1174                 for (unit = units; unit < units + c; unit++)
1175                         free(unit->path);
1176
1177         return 0;
1178 }
1179
1180 static int list_dependencies_print(const char *name, int level, unsigned int branches, bool last) {
1181         _cleanup_free_ char *n = NULL;
1182         size_t max_len = MAX(columns(),20u);
1183         size_t len = 0;
1184         int i;
1185
1186         if (!arg_plain) {
1187
1188                 for (i = level - 1; i >= 0; i--) {
1189                         len += 2;
1190                         if (len > max_len - 3 && !arg_full) {
1191                                 printf("%s...\n",max_len % 2 ? "" : " ");
1192                                 return 0;
1193                         }
1194                         printf("%s", draw_special_char(branches & (1 << i) ? DRAW_TREE_VERT : DRAW_TREE_SPACE));
1195                 }
1196                 len += 2;
1197
1198                 if (len > max_len - 3 && !arg_full) {
1199                         printf("%s...\n",max_len % 2 ? "" : " ");
1200                         return 0;
1201                 }
1202
1203                 printf("%s", draw_special_char(last ? DRAW_TREE_RIGHT : DRAW_TREE_BRANCH));
1204         }
1205
1206         if (arg_full){
1207                 printf("%s\n", name);
1208                 return 0;
1209         }
1210
1211         n = ellipsize(name, max_len-len, 100);
1212         if (!n)
1213                 return log_oom();
1214
1215         printf("%s\n", n);
1216         return 0;
1217 }
1218
1219 static int list_dependencies_get_dependencies(sd_bus *bus, const char *name, char ***deps) {
1220
1221         static const char *dependencies[_DEPENDENCY_MAX] = {
1222                 [DEPENDENCY_FORWARD] = "Requires\0"
1223                                        "RequiresOverridable\0"
1224                                        "Requisite\0"
1225                                        "RequisiteOverridable\0"
1226                                        "Wants\0",
1227                 [DEPENDENCY_REVERSE] = "RequiredBy\0"
1228                                        "RequiredByOverridable\0"
1229                                        "WantedBy\0"
1230                                        "PartOf\0",
1231                 [DEPENDENCY_AFTER]   = "After\0",
1232                 [DEPENDENCY_BEFORE]  = "Before\0",
1233         };
1234
1235         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1236         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1237         _cleanup_strv_free_ char **ret = NULL;
1238         _cleanup_free_ char *path = NULL;
1239         int r;
1240
1241         assert(bus);
1242         assert(name);
1243         assert(deps);
1244         assert_cc(ELEMENTSOF(dependencies) == _DEPENDENCY_MAX);
1245
1246         path = unit_dbus_path_from_name(name);
1247         if (!path)
1248                 return log_oom();
1249
1250         r = sd_bus_call_method(
1251                         bus,
1252                         "org.freedesktop.systemd1",
1253                         path,
1254                         "org.freedesktop.DBus.Properties",
1255                         "GetAll",
1256                         &error,
1257                         &reply,
1258                         "s", "org.freedesktop.systemd1.Unit");
1259         if (r < 0) {
1260                 log_error("Failed to get properties of %s: %s", name, bus_error_message(&error, r));
1261                 return r;
1262         }
1263
1264         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "{sv}");
1265         if (r < 0)
1266                 return bus_log_parse_error(r);
1267
1268         while ((r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) {
1269                 const char *prop;
1270
1271                 r = sd_bus_message_read(reply, "s", &prop);
1272                 if (r < 0)
1273                         return bus_log_parse_error(r);
1274
1275                 if (!nulstr_contains(dependencies[arg_dependency], prop)) {
1276                         r = sd_bus_message_skip(reply, "v");
1277                         if (r < 0)
1278                                 return bus_log_parse_error(r);
1279                 } else {
1280
1281                         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_VARIANT, "as");
1282                         if (r < 0)
1283                                 return bus_log_parse_error(r);
1284
1285                         r = bus_message_read_strv_extend(reply, &ret);
1286                         if (r < 0)
1287                                 return bus_log_parse_error(r);
1288
1289                         r = sd_bus_message_exit_container(reply);
1290                         if (r < 0)
1291                                 return bus_log_parse_error(r);
1292                 }
1293
1294                 r = sd_bus_message_exit_container(reply);
1295                 if (r < 0)
1296                         return bus_log_parse_error(r);
1297
1298         }
1299         if (r < 0)
1300                 return bus_log_parse_error(r);
1301
1302         r = sd_bus_message_exit_container(reply);
1303         if (r < 0)
1304                 return bus_log_parse_error(r);
1305
1306         *deps = ret;
1307         ret = NULL;
1308
1309         return 0;
1310 }
1311
1312 static int list_dependencies_compare(const void *_a, const void *_b) {
1313         const char **a = (const char**) _a, **b = (const char**) _b;
1314
1315         if (unit_name_to_type(*a) == UNIT_TARGET && unit_name_to_type(*b) != UNIT_TARGET)
1316                 return 1;
1317         if (unit_name_to_type(*a) != UNIT_TARGET && unit_name_to_type(*b) == UNIT_TARGET)
1318                 return -1;
1319
1320         return strcasecmp(*a, *b);
1321 }
1322
1323 static int list_dependencies_one(
1324                 sd_bus *bus,
1325                 const char *name,
1326                 int level,
1327                 char ***units,
1328                 unsigned int branches) {
1329
1330         _cleanup_strv_free_ char **deps = NULL;
1331         char **c;
1332         int r = 0;
1333
1334         assert(bus);
1335         assert(name);
1336         assert(units);
1337
1338         r = strv_extend(units, name);
1339         if (r < 0)
1340                 return log_oom();
1341
1342         r = list_dependencies_get_dependencies(bus, name, &deps);
1343         if (r < 0)
1344                 return r;
1345
1346         qsort_safe(deps, strv_length(deps), sizeof (char*), list_dependencies_compare);
1347
1348         STRV_FOREACH(c, deps) {
1349                 int state;
1350
1351                 if (strv_contains(*units, *c)) {
1352                         if (!arg_plain) {
1353                                 r = list_dependencies_print("...", level + 1, (branches << 1) | (c[1] == NULL ? 0 : 1), 1);
1354                                 if (r < 0)
1355                                         return r;
1356                         }
1357                         continue;
1358                 }
1359
1360                 state = check_one_unit(bus, *c, "activating\0active\0reloading\0", true);
1361                 if (state > 0)
1362                         printf("%s%s%s", ansi_highlight_green(), draw_special_char(DRAW_BLACK_CIRCLE), ansi_highlight_off());
1363                 else
1364                         printf("%s%s%s", ansi_highlight_red(), draw_special_char(DRAW_BLACK_CIRCLE), ansi_highlight_off());
1365
1366                 r = list_dependencies_print(*c, level, branches, c[1] == NULL);
1367                 if (r < 0)
1368                         return r;
1369
1370                 if (arg_all || unit_name_to_type(*c) == UNIT_TARGET) {
1371                        r = list_dependencies_one(bus, *c, level + 1, units, (branches << 1) | (c[1] == NULL ? 0 : 1));
1372                        if (r < 0)
1373                                return r;
1374                 }
1375         }
1376
1377         if (!arg_plain)
1378                 strv_remove(*units, name);
1379
1380         return 0;
1381 }
1382
1383 static int list_dependencies(sd_bus *bus, char **args) {
1384         _cleanup_strv_free_ char **units = NULL;
1385         _cleanup_free_ char *unit = NULL;
1386         const char *u;
1387
1388         assert(bus);
1389
1390         if (args[1]) {
1391                 unit = unit_name_mangle(args[1], MANGLE_NOGLOB);
1392                 if (!unit)
1393                         return log_oom();
1394                 u = unit;
1395         } else
1396                 u = SPECIAL_DEFAULT_TARGET;
1397
1398         pager_open_if_enabled();
1399
1400         puts(u);
1401
1402         return list_dependencies_one(bus, u, 0, &units, 0);
1403 }
1404
1405 static int get_default(sd_bus *bus, char **args) {
1406         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1407         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1408         _cleanup_free_ char *_path = NULL;
1409         const char *path;
1410         int r;
1411
1412         if (!bus || avoid_bus()) {
1413                 r = unit_file_get_default(arg_scope, arg_root, &_path);
1414                 if (r < 0) {
1415                         log_error("Failed to get default target: %s", strerror(-r));
1416                         return r;
1417                 }
1418                 path = _path;
1419
1420         } else {
1421                 r = sd_bus_call_method(
1422                                 bus,
1423                                 "org.freedesktop.systemd1",
1424                                 "/org/freedesktop/systemd1",
1425                                 "org.freedesktop.systemd1.Manager",
1426                                 "GetDefaultTarget",
1427                                 &error,
1428                                 &reply,
1429                                 NULL);
1430                 if (r < 0) {
1431                         log_error("Failed to get default target: %s", bus_error_message(&error, -r));
1432                         return r;
1433                 }
1434
1435                 r = sd_bus_message_read(reply, "s", &path);
1436                 if (r < 0)
1437                         return bus_log_parse_error(r);
1438         }
1439
1440         if (path)
1441                 printf("%s\n", path);
1442
1443         return 0;
1444 }
1445
1446 static void dump_unit_file_changes(const UnitFileChange *changes, unsigned n_changes) {
1447         unsigned i;
1448
1449         assert(changes || n_changes == 0);
1450
1451         for (i = 0; i < n_changes; i++) {
1452                 if (changes[i].type == UNIT_FILE_SYMLINK)
1453                         log_info("ln -s '%s' '%s'", changes[i].source, changes[i].path);
1454                 else
1455                         log_info("rm '%s'", changes[i].path);
1456         }
1457 }
1458
1459 static int deserialize_and_dump_unit_file_changes(sd_bus_message *m) {
1460         const char *type, *path, *source;
1461         int r;
1462
1463         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sss)");
1464         if (r < 0)
1465                 return bus_log_parse_error(r);
1466
1467         while ((r = sd_bus_message_read(m, "(sss)", &type, &path, &source)) > 0) {
1468                 if (!arg_quiet) {
1469                         if (streq(type, "symlink"))
1470                                 log_info("ln -s '%s' '%s'", source, path);
1471                         else
1472                                 log_info("rm '%s'", path);
1473                 }
1474         }
1475         if (r < 0)
1476                 return bus_log_parse_error(r);
1477
1478         r = sd_bus_message_exit_container(m);
1479         if (r < 0)
1480                 return bus_log_parse_error(r);
1481
1482         return 0;
1483 }
1484
1485 static int set_default(sd_bus *bus, char **args) {
1486         _cleanup_free_ char *unit = NULL;
1487         UnitFileChange *changes = NULL;
1488         unsigned n_changes = 0;
1489         int r;
1490
1491         unit = unit_name_mangle_with_suffix(args[1], MANGLE_NOGLOB, ".target");
1492         if (!unit)
1493                 return log_oom();
1494
1495         if (!bus || avoid_bus()) {
1496                 r = unit_file_set_default(arg_scope, arg_root, unit, arg_force, &changes, &n_changes);
1497                 if (r < 0) {
1498                         log_error("Failed to set default target: %s", strerror(-r));
1499                         return r;
1500                 }
1501
1502                 if (!arg_quiet)
1503                         dump_unit_file_changes(changes, n_changes);
1504
1505                 r = 0;
1506         } else {
1507                 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1508                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1509
1510                 r = sd_bus_call_method(
1511                                 bus,
1512                                 "org.freedesktop.systemd1",
1513                                 "/org/freedesktop/systemd1",
1514                                 "org.freedesktop.systemd1.Manager",
1515                                 "SetDefaultTarget",
1516                                 &error,
1517                                 &reply,
1518                                 "sb", unit, arg_force);
1519                 if (r < 0) {
1520                         log_error("Failed to set default target: %s", bus_error_message(&error, -r));
1521                         return r;
1522                 }
1523
1524                 r = deserialize_and_dump_unit_file_changes(reply);
1525                 if (r < 0)
1526                         return r;
1527
1528                 /* Try to reload if enabeld */
1529                 if (!arg_no_reload)
1530                         r = daemon_reload(bus, args);
1531                 else
1532                         r = 0;
1533         }
1534
1535         unit_file_changes_free(changes, n_changes);
1536
1537         return r;
1538 }
1539
1540 struct job_info {
1541         uint32_t id;
1542         const char *name, *type, *state;
1543 };
1544
1545 static void output_jobs_list(const struct job_info* jobs, unsigned n, bool skipped) {
1546         unsigned id_len, unit_len, type_len, state_len;
1547         const struct job_info *j;
1548         const char *on, *off;
1549         bool shorten = false;
1550
1551         assert(n == 0 || jobs);
1552
1553         if (n == 0) {
1554                 on = ansi_highlight_green();
1555                 off = ansi_highlight_off();
1556
1557                 printf("%sNo jobs %s.%s\n", on, skipped ? "listed" : "running", off);
1558                 return;
1559         }
1560
1561         pager_open_if_enabled();
1562
1563         id_len = sizeof("JOB")-1;
1564         unit_len = sizeof("UNIT")-1;
1565         type_len = sizeof("TYPE")-1;
1566         state_len = sizeof("STATE")-1;
1567
1568         for (j = jobs; j < jobs + n; j++) {
1569                 uint32_t id = j->id;
1570                 assert(j->name && j->type && j->state);
1571
1572                 id_len = MAX(id_len, DECIMAL_STR_WIDTH(id));
1573                 unit_len = MAX(unit_len, strlen(j->name));
1574                 type_len = MAX(type_len, strlen(j->type));
1575                 state_len = MAX(state_len, strlen(j->state));
1576         }
1577
1578         if (!arg_full && id_len + 1 + unit_len + type_len + 1 + state_len > columns()) {
1579                 unit_len = MAX(33u, columns() - id_len - type_len - state_len - 3);
1580                 shorten = true;
1581         }
1582
1583         if (!arg_no_legend)
1584                 printf("%*s %-*s %-*s %-*s\n",
1585                        id_len, "JOB",
1586                        unit_len, "UNIT",
1587                        type_len, "TYPE",
1588                        state_len, "STATE");
1589
1590         for (j = jobs; j < jobs + n; j++) {
1591                 _cleanup_free_ char *e = NULL;
1592
1593                 if (streq(j->state, "running")) {
1594                         on = ansi_highlight();
1595                         off = ansi_highlight_off();
1596                 } else
1597                         on = off = "";
1598
1599                 e = shorten ? ellipsize(j->name, unit_len, 33) : NULL;
1600                 printf("%*u %s%-*s%s %-*s %s%-*s%s\n",
1601                        id_len, j->id,
1602                        on, unit_len, e ? e : j->name, off,
1603                        type_len, j->type,
1604                        on, state_len, j->state, off);
1605         }
1606
1607         if (!arg_no_legend) {
1608                 on = ansi_highlight();
1609                 off = ansi_highlight_off();
1610
1611                 printf("\n%s%u jobs listed%s.\n", on, n, off);
1612         }
1613 }
1614
1615 static bool output_show_job(struct job_info *job, char **patterns) {
1616         if (!strv_isempty(patterns)) {
1617                 char **pattern;
1618
1619                 STRV_FOREACH(pattern, patterns)
1620                         if (fnmatch(*pattern, job->name, FNM_NOESCAPE) == 0)
1621                                 return true;
1622                 return false;
1623         }
1624
1625         return true;
1626 }
1627
1628 static int list_jobs(sd_bus *bus, char **args) {
1629         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1630         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1631         const char *name, *type, *state, *job_path, *unit_path;
1632         _cleanup_free_ struct job_info *jobs = NULL;
1633         size_t size = 0;
1634         unsigned c = 0;
1635         uint32_t id;
1636         int r;
1637         bool skipped = false;
1638
1639         r = sd_bus_call_method(
1640                         bus,
1641                         "org.freedesktop.systemd1",
1642                         "/org/freedesktop/systemd1",
1643                         "org.freedesktop.systemd1.Manager",
1644                         "ListJobs",
1645                         &error,
1646                         &reply,
1647                         NULL);
1648         if (r < 0) {
1649                 log_error("Failed to list jobs: %s", bus_error_message(&error, r));
1650                 return r;
1651         }
1652
1653         r = sd_bus_message_enter_container(reply, 'a', "(usssoo)");
1654         if (r < 0)
1655                 return bus_log_parse_error(r);
1656
1657         while ((r = sd_bus_message_read(reply, "(usssoo)", &id, &name, &type, &state, &job_path, &unit_path)) > 0) {
1658                 struct job_info job = { id, name, type, state };
1659
1660                 if (!output_show_job(&job, strv_skip_first(args))) {
1661                         skipped = true;
1662                         continue;
1663                 }
1664
1665                 if (!GREEDY_REALLOC(jobs, size, c + 1))
1666                         return log_oom();
1667
1668                 jobs[c++] = job;
1669         }
1670         if (r < 0)
1671                 return bus_log_parse_error(r);
1672
1673         r = sd_bus_message_exit_container(reply);
1674         if (r < 0)
1675                 return bus_log_parse_error(r);
1676
1677         output_jobs_list(jobs, c, skipped);
1678         return r;
1679 }
1680
1681 static int cancel_job(sd_bus *bus, char **args) {
1682         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1683         char **name;
1684
1685         assert(args);
1686
1687         if (strv_length(args) <= 1)
1688                 return daemon_reload(bus, args);
1689
1690         STRV_FOREACH(name, args+1) {
1691                 uint32_t id;
1692                 int r;
1693
1694                 r = safe_atou32(*name, &id);
1695                 if (r < 0) {
1696                         log_error("Failed to parse job id \"%s\": %s", *name, strerror(-r));
1697                         return r;
1698                 }
1699
1700                 r = sd_bus_call_method(
1701                                 bus,
1702                                 "org.freedesktop.systemd1",
1703                                 "/org/freedesktop/systemd1",
1704                                 "org.freedesktop.systemd1.Manager",
1705                                 "CancelJob",
1706                                 &error,
1707                                 NULL,
1708                                 "u", id);
1709                 if (r < 0) {
1710                         log_error("Failed to cancel job %u: %s", (unsigned) id, bus_error_message(&error, r));
1711                         return r;
1712                 }
1713         }
1714
1715         return 0;
1716 }
1717
1718 static int need_daemon_reload(sd_bus *bus, const char *unit) {
1719         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1720         const char *path;
1721         int b, r;
1722
1723         /* We ignore all errors here, since this is used to show a
1724          * warning only */
1725
1726         /* We don't use unit_dbus_path_from_name() directly since we
1727          * don't want to load the unit if it isn't loaded. */
1728
1729         r = sd_bus_call_method(
1730                         bus,
1731                         "org.freedesktop.systemd1",
1732                         "/org/freedesktop/systemd1",
1733                         "org.freedesktop.systemd1.Manager",
1734                         "GetUnit",
1735                         NULL,
1736                         &reply,
1737                         "s", unit);
1738         if (r < 0)
1739                 return r;
1740
1741         r = sd_bus_message_read(reply, "o", &path);
1742         if (r < 0)
1743                 return r;
1744
1745         r = sd_bus_get_property_trivial(
1746                         bus,
1747                         "org.freedesktop.systemd1",
1748                         path,
1749                         "org.freedesktop.systemd1.Unit",
1750                         "NeedDaemonReload",
1751                         NULL,
1752                         'b', &b);
1753         if (r < 0)
1754                 return r;
1755
1756         return b;
1757 }
1758
1759 typedef struct WaitData {
1760         Set *set;
1761
1762         char *name;
1763         char *result;
1764 } WaitData;
1765
1766 static int wait_filter(sd_bus *bus, sd_bus_message *m, void *data, sd_bus_error *error) {
1767         WaitData *d = data;
1768
1769         assert(bus);
1770         assert(m);
1771         assert(d);
1772
1773         log_debug("Got D-Bus request: %s.%s() on %s",
1774                   sd_bus_message_get_interface(m),
1775                   sd_bus_message_get_member(m),
1776                   sd_bus_message_get_path(m));
1777
1778         if (sd_bus_message_is_signal(m, "org.freedesktop.DBus.Local", "Disconnected")) {
1779                 log_error("Warning! D-Bus connection terminated.");
1780                 sd_bus_close(bus);
1781         } else if (sd_bus_message_is_signal(m, "org.freedesktop.systemd1.Manager", "JobRemoved")) {
1782                 uint32_t id;
1783                 const char *path, *result, *unit;
1784                 char *ret;
1785                 int r;
1786
1787                 r = sd_bus_message_read(m, "uoss", &id, &path, &unit, &result);
1788                 if (r >= 0) {
1789                         ret = set_remove(d->set, (char*) path);
1790                         if (!ret)
1791                                 return 0;
1792
1793                         free(ret);
1794
1795                         if (!isempty(result))
1796                                 d->result = strdup(result);
1797
1798                         if (!isempty(unit))
1799                                 d->name = strdup(unit);
1800
1801                         return 0;
1802                 }
1803 #ifndef NOLEGACY
1804                 r = sd_bus_message_read(m, "uos", &id, &path, &result);
1805                 if (r >= 0) {
1806                         ret = set_remove(d->set, (char*) path);
1807                         if (!ret)
1808                                 return 0;
1809
1810                         free(ret);
1811
1812                         if (*result)
1813                                 d->result = strdup(result);
1814
1815                         return 0;
1816                 }
1817 #endif
1818
1819                 bus_log_parse_error(r);
1820         }
1821
1822         return 0;
1823 }
1824
1825 static int enable_wait_for_jobs(sd_bus *bus) {
1826         int r;
1827
1828         assert(bus);
1829
1830         r = sd_bus_add_match(
1831                         bus,
1832                         "type='signal',"
1833                         "sender='org.freedesktop.systemd1',"
1834                         "interface='org.freedesktop.systemd1.Manager',"
1835                         "member='JobRemoved',"
1836                         "path='/org/freedesktop/systemd1'",
1837                         NULL, NULL);
1838         if (r < 0) {
1839                 log_error("Failed to add match");
1840                 return -EIO;
1841         }
1842
1843         /* This is slightly dirty, since we don't undo the match registrations. */
1844         return 0;
1845 }
1846
1847 static int bus_process_wait(sd_bus *bus) {
1848         int r;
1849
1850         for (;;) {
1851                 r = sd_bus_process(bus, NULL);
1852                 if (r < 0)
1853                         return r;
1854                 if (r > 0)
1855                         return 0;
1856                 r = sd_bus_wait(bus, (uint64_t) -1);
1857                 if (r < 0)
1858                         return r;
1859         }
1860 }
1861
1862 static int check_wait_response(WaitData *d) {
1863         int r = 0;
1864
1865         assert(d->result);
1866
1867         if (!arg_quiet) {
1868                 if (streq(d->result, "timeout"))
1869                         log_error("Job for %s timed out.", strna(d->name));
1870                 else if (streq(d->result, "canceled"))
1871                         log_error("Job for %s canceled.", strna(d->name));
1872                 else if (streq(d->result, "dependency"))
1873                         log_error("A dependency job for %s failed. See 'journalctl -xn' for details.", strna(d->name));
1874                 else if (!streq(d->result, "done") && !streq(d->result, "skipped"))
1875                         log_error("Job for %s failed. See 'systemctl status %s' and 'journalctl -xn' for details.", strna(d->name), strna(d->name));
1876         }
1877
1878         if (streq(d->result, "timeout"))
1879                 r = -ETIME;
1880         else if (streq(d->result, "canceled"))
1881                 r = -ECANCELED;
1882         else if (streq(d->result, "dependency"))
1883                 r = -EIO;
1884         else if (!streq(d->result, "done") && !streq(d->result, "skipped"))
1885                 r = -EIO;
1886
1887         return r;
1888 }
1889
1890 static int wait_for_jobs(sd_bus *bus, Set *s) {
1891         WaitData d = { .set = s };
1892         int r = 0, q;
1893
1894         assert(bus);
1895         assert(s);
1896
1897         q = sd_bus_add_filter(bus, wait_filter, &d);
1898         if (q < 0)
1899                 return log_oom();
1900
1901         while (!set_isempty(s)) {
1902                 q = bus_process_wait(bus);
1903                 if (q < 0) {
1904                         log_error("Failed to wait for response: %s", strerror(-r));
1905                         return q;
1906                 }
1907
1908                 if (d.result) {
1909                         q = check_wait_response(&d);
1910                         /* Return the first error as it is most likely to be
1911                          * meaningful. */
1912                         if (q < 0 && r == 0)
1913                                 r = q;
1914                         log_debug("Got result %s/%s for job %s",
1915                                   strna(d.result), strerror(-q), strna(d.name));
1916                 }
1917
1918                 free(d.name);
1919                 d.name = NULL;
1920
1921                 free(d.result);
1922                 d.result = NULL;
1923         }
1924
1925         q = sd_bus_remove_filter(bus, wait_filter, &d);
1926         if (q < 0 && r == 0)
1927                 r = q;
1928
1929         return r;
1930 }
1931
1932 static int check_one_unit(sd_bus *bus, const char *name, const char *good_states, bool quiet) {
1933         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1934         _cleanup_free_ char *n = NULL, *state = NULL;
1935         const char *path;
1936         int r;
1937
1938         assert(name);
1939
1940         n = unit_name_mangle(name, MANGLE_NOGLOB);
1941         if (!n)
1942                 return log_oom();
1943
1944         /* We don't use unit_dbus_path_from_name() directly since we
1945          * don't want to load the unit if it isn't loaded. */
1946
1947         r = sd_bus_call_method(
1948                         bus,
1949                         "org.freedesktop.systemd1",
1950                         "/org/freedesktop/systemd1",
1951                         "org.freedesktop.systemd1.Manager",
1952                         "GetUnit",
1953                         NULL,
1954                         &reply,
1955                         "s", n);
1956         if (r < 0) {
1957                 if (!quiet)
1958                         puts("unknown");
1959                 return 0;
1960         }
1961
1962         r = sd_bus_message_read(reply, "o", &path);
1963         if (r < 0)
1964                 return bus_log_parse_error(r);
1965
1966         r = sd_bus_get_property_string(
1967                         bus,
1968                         "org.freedesktop.systemd1",
1969                         path,
1970                         "org.freedesktop.systemd1.Unit",
1971                         "ActiveState",
1972                         NULL,
1973                         &state);
1974         if (r < 0) {
1975                 if (!quiet)
1976                         puts("unknown");
1977                 return 0;
1978         }
1979
1980         if (!quiet)
1981                 puts(state);
1982
1983         return nulstr_contains(good_states, state);
1984 }
1985
1986 static int check_triggering_units(
1987                 sd_bus *bus,
1988                 const char *name) {
1989
1990         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1991         _cleanup_free_ char *path = NULL, *n = NULL, *state = NULL;
1992         _cleanup_strv_free_ char **triggered_by = NULL;
1993         bool print_warning_label = true;
1994         char **i;
1995         int r;
1996
1997         n = unit_name_mangle(name, MANGLE_NOGLOB);
1998         if (!n)
1999                 return log_oom();
2000
2001         path = unit_dbus_path_from_name(n);
2002         if (!path)
2003                 return log_oom();
2004
2005         r = sd_bus_get_property_string(
2006                         bus,
2007                         "org.freedesktop.systemd1",
2008                         path,
2009                         "org.freedesktop.systemd1.Unit",
2010                         "LoadState",
2011                         &error,
2012                         &state);
2013         if (r < 0) {
2014                 log_error("Failed to get load state of %s: %s", n, bus_error_message(&error, r));
2015                 return r;
2016         }
2017
2018         if (streq(state, "masked"))
2019                 return 0;
2020
2021         r = sd_bus_get_property_strv(
2022                         bus,
2023                         "org.freedesktop.systemd1",
2024                         path,
2025                         "org.freedesktop.systemd1.Unit",
2026                         "TriggeredBy",
2027                         &error,
2028                         &triggered_by);
2029         if (r < 0) {
2030                 log_error("Failed to get triggered by array of %s: %s", n, bus_error_message(&error, r));
2031                 return r;
2032         }
2033
2034         STRV_FOREACH(i, triggered_by) {
2035                 r = check_one_unit(bus, *i, "active\0reloading\0", true);
2036                 if (r < 0) {
2037                         log_error("Failed to check unit: %s", strerror(-r));
2038                         return r;
2039                 }
2040
2041                 if (r == 0)
2042                         continue;
2043
2044                 if (print_warning_label) {
2045                         log_warning("Warning: Stopping %s, but it can still be activated by:", n);
2046                         print_warning_label = false;
2047                 }
2048
2049                 log_warning("  %s", *i);
2050         }
2051
2052         return 0;
2053 }
2054
2055 static const char *verb_to_method(const char *verb) {
2056        uint i;
2057
2058        for (i = 0; i < ELEMENTSOF(unit_actions); i++)
2059                 if (streq_ptr(unit_actions[i].verb, verb))
2060                         return unit_actions[i].method;
2061
2062        return "StartUnit";
2063 }
2064
2065 static const char *method_to_verb(const char *method) {
2066        uint i;
2067
2068        for (i = 0; i < ELEMENTSOF(unit_actions); i++)
2069                 if (streq_ptr(unit_actions[i].method, method))
2070                         return unit_actions[i].verb;
2071
2072        return "n/a";
2073 }
2074
2075 static int start_unit_one(
2076                 sd_bus *bus,
2077                 const char *method,
2078                 const char *name,
2079                 const char *mode,
2080                 sd_bus_error *error,
2081                 Set *s) {
2082
2083         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2084         const char *path;
2085         int r;
2086
2087         assert(method);
2088         assert(name);
2089         assert(mode);
2090         assert(error);
2091
2092         log_debug("Calling manager for %s on %s, %s", method, name, mode);
2093         r = sd_bus_call_method(
2094                         bus,
2095                         "org.freedesktop.systemd1",
2096                         "/org/freedesktop/systemd1",
2097                         "org.freedesktop.systemd1.Manager",
2098                         method,
2099                         error,
2100                         &reply,
2101                         "ss", name, mode);
2102         if (r < 0) {
2103                 const char *verb;
2104
2105                 if (r == -ENOENT && arg_action != ACTION_SYSTEMCTL)
2106                         /* There's always a fallback possible for
2107                          * legacy actions. */
2108                         return -EADDRNOTAVAIL;
2109
2110                 verb = method_to_verb(method);
2111
2112                 log_error("Failed to %s %s: %s", verb, name, bus_error_message(error, r));
2113                 return r;
2114         }
2115
2116         r = sd_bus_message_read(reply, "o", &path);
2117         if (r < 0)
2118                 return bus_log_parse_error(r);
2119
2120         if (need_daemon_reload(bus, name) > 0)
2121                 log_warning("Warning: Unit file of %s changed on disk, 'systemctl%s daemon-reload' recommended.",
2122                             name, arg_scope == UNIT_FILE_SYSTEM ? "" : " --user");
2123
2124         if (s) {
2125                 char *p;
2126
2127                 p = strdup(path);
2128                 if (!p)
2129                         return log_oom();
2130
2131                 log_debug("Adding %s to the set", p);
2132                 r = set_consume(s, p);
2133                 if (r < 0)
2134                         return log_oom();
2135         }
2136
2137         return 0;
2138 }
2139
2140 static int expand_names(sd_bus *bus, char **names, const char* suffix, char ***ret) {
2141
2142         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2143         _cleanup_strv_free_ char **mangled = NULL, **globs = NULL;
2144         char **name;
2145         int r = 0, i;
2146
2147         STRV_FOREACH(name, names) {
2148                 char *t;
2149
2150                 if (suffix)
2151                         t = unit_name_mangle_with_suffix(*name, MANGLE_GLOB, suffix);
2152                 else
2153                         t = unit_name_mangle(*name, MANGLE_GLOB);
2154                 if (!t)
2155                         return log_oom();
2156
2157                 if (string_is_glob(t))
2158                         r = strv_push(&globs, t);
2159                 else
2160                         r = strv_push(&mangled, t);
2161                 if (r < 0) {
2162                         free(t);
2163                         return log_oom();
2164                 }
2165         }
2166
2167         /* Query the manager only if any of the names are a glob, since
2168          * this is fairly expensive */
2169         if (!strv_isempty(globs)) {
2170                 _cleanup_free_ UnitInfo *unit_infos = NULL;
2171
2172                 r = get_unit_list(bus, &reply, &unit_infos, globs);
2173                 if (r < 0)
2174                         return r;
2175
2176                 for (i = 0; i < r; i++)
2177                         if (strv_extend(&mangled, unit_infos[i].id) < 0)
2178                                 return log_oom();
2179         }
2180
2181         *ret = mangled;
2182         mangled = NULL; /* do not free */
2183         return 0;
2184 }
2185
2186 static const struct {
2187         const char *target;
2188         const char *verb;
2189         const char *mode;
2190 } action_table[_ACTION_MAX] = {
2191         [ACTION_HALT]         = { SPECIAL_HALT_TARGET,         "halt",         "replace-irreversibly" },
2192         [ACTION_POWEROFF]     = { SPECIAL_POWEROFF_TARGET,     "poweroff",     "replace-irreversibly" },
2193         [ACTION_REBOOT]       = { SPECIAL_REBOOT_TARGET,       "reboot",       "replace-irreversibly" },
2194         [ACTION_KEXEC]        = { SPECIAL_KEXEC_TARGET,        "kexec",        "replace-irreversibly" },
2195         [ACTION_RUNLEVEL2]    = { SPECIAL_RUNLEVEL2_TARGET,    NULL,           "isolate" },
2196         [ACTION_RUNLEVEL3]    = { SPECIAL_RUNLEVEL3_TARGET,    NULL,           "isolate" },
2197         [ACTION_RUNLEVEL4]    = { SPECIAL_RUNLEVEL4_TARGET,    NULL,           "isolate" },
2198         [ACTION_RUNLEVEL5]    = { SPECIAL_RUNLEVEL5_TARGET,    NULL,           "isolate" },
2199         [ACTION_RESCUE]       = { SPECIAL_RESCUE_TARGET,       "rescue",       "isolate" },
2200         [ACTION_EMERGENCY]    = { SPECIAL_EMERGENCY_TARGET,    "emergency",    "isolate" },
2201         [ACTION_DEFAULT]      = { SPECIAL_DEFAULT_TARGET,      "default",      "isolate" },
2202         [ACTION_EXIT]         = { SPECIAL_EXIT_TARGET,         "exit",         "replace-irreversibly" },
2203         [ACTION_SUSPEND]      = { SPECIAL_SUSPEND_TARGET,      "suspend",      "replace-irreversibly" },
2204         [ACTION_HIBERNATE]    = { SPECIAL_HIBERNATE_TARGET,    "hibernate",    "replace-irreversibly" },
2205         [ACTION_HYBRID_SLEEP] = { SPECIAL_HYBRID_SLEEP_TARGET, "hybrid-sleep", "replace-irreversibly" },
2206 };
2207
2208 static enum action verb_to_action(const char *verb) {
2209         enum action i;
2210
2211         for (i = _ACTION_INVALID; i < _ACTION_MAX; i++)
2212                 if (streq_ptr(action_table[i].verb, verb))
2213                         return i;
2214
2215         return _ACTION_INVALID;
2216 }
2217
2218 static int start_unit(sd_bus *bus, char **args) {
2219         _cleanup_set_free_free_ Set *s = NULL;
2220         _cleanup_strv_free_ char **names = NULL;
2221         const char *method, *mode, *one_name;
2222         char **name;
2223         int r = 0;
2224
2225         assert(bus);
2226
2227         ask_password_agent_open_if_enabled();
2228
2229         if (arg_action == ACTION_SYSTEMCTL) {
2230                 enum action action;
2231                 method = verb_to_method(args[0]);
2232                 action = verb_to_action(args[0]);
2233
2234                 mode = streq(args[0], "isolate") ? "isolate" :
2235                        action_table[action].mode ?: arg_job_mode;
2236
2237                 one_name = action_table[action].target;
2238         } else {
2239                 assert(arg_action < ELEMENTSOF(action_table));
2240                 assert(action_table[arg_action].target);
2241
2242                 method = "StartUnit";
2243
2244                 mode = action_table[arg_action].mode;
2245                 one_name = action_table[arg_action].target;
2246         }
2247
2248         if (one_name)
2249                 names = strv_new(one_name, NULL);
2250         else {
2251                 r = expand_names(bus, args + 1, NULL, &names);
2252                 if (r < 0)
2253                         log_error("Failed to expand names: %s", strerror(-r));
2254         }
2255
2256         if (!arg_no_block) {
2257                 r = enable_wait_for_jobs(bus);
2258                 if (r < 0) {
2259                         log_error("Could not watch jobs: %s", strerror(-r));
2260                         return r;
2261                 }
2262
2263                 s = set_new(string_hash_func, string_compare_func);
2264                 if (!s)
2265                         return log_oom();
2266         }
2267
2268         STRV_FOREACH(name, names) {
2269                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2270                 int q;
2271
2272                 q = start_unit_one(bus, method, *name, mode, &error, s);
2273                 if (r >= 0 && q < 0)
2274                         r = translate_bus_error_to_exit_status(q, &error);
2275         }
2276
2277         if (!arg_no_block) {
2278                 int q;
2279
2280                 q = wait_for_jobs(bus, s);
2281                 if (q < 0)
2282                         return q;
2283
2284                 /* When stopping units, warn if they can still be triggered by
2285                  * another active unit (socket, path, timer) */
2286                 if (!arg_quiet && streq(method, "StopUnit"))
2287                         STRV_FOREACH(name, names)
2288                                 check_triggering_units(bus, *name);
2289         }
2290
2291         return r;
2292 }
2293
2294 /* Ask systemd-logind, which might grant access to unprivileged users
2295  * through PolicyKit */
2296 static int reboot_with_logind(sd_bus *bus, enum action a) {
2297 #ifdef HAVE_LOGIND
2298         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2299         const char *method;
2300         int r;
2301
2302         if (!bus)
2303                 return -EIO;
2304
2305         polkit_agent_open_if_enabled();
2306
2307         switch (a) {
2308
2309         case ACTION_REBOOT:
2310                 method = "Reboot";
2311                 break;
2312
2313         case ACTION_POWEROFF:
2314                 method = "PowerOff";
2315                 break;
2316
2317         case ACTION_SUSPEND:
2318                 method = "Suspend";
2319                 break;
2320
2321         case ACTION_HIBERNATE:
2322                 method = "Hibernate";
2323                 break;
2324
2325         case ACTION_HYBRID_SLEEP:
2326                 method = "HybridSleep";
2327                 break;
2328
2329         default:
2330                 return -EINVAL;
2331         }
2332
2333         r = sd_bus_call_method(
2334                         bus,
2335                         "org.freedesktop.login1",
2336                         "/org/freedesktop/login1",
2337                         "org.freedesktop.login1.Manager",
2338                         method,
2339                         &error,
2340                         NULL,
2341                         "b", true);
2342         if (r < 0)
2343                 log_error("Failed to execute operation: %s", bus_error_message(&error, r));
2344
2345         return r;
2346 #else
2347         return -ENOSYS;
2348 #endif
2349 }
2350
2351 static int check_inhibitors(sd_bus *bus, enum action a) {
2352 #ifdef HAVE_LOGIND
2353         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2354         _cleanup_strv_free_ char **sessions = NULL;
2355         const char *what, *who, *why, *mode;
2356         uint32_t uid, pid;
2357         unsigned c = 0;
2358         char **s;
2359         int r;
2360
2361         if (!bus)
2362                 return 0;
2363
2364         if (arg_ignore_inhibitors || arg_force > 0)
2365                 return 0;
2366
2367         if (arg_when > 0)
2368                 return 0;
2369
2370         if (geteuid() == 0)
2371                 return 0;
2372
2373         if (!on_tty())
2374                 return 0;
2375
2376         r = sd_bus_call_method(
2377                         bus,
2378                         "org.freedesktop.login1",
2379                         "/org/freedesktop/login1",
2380                         "org.freedesktop.login1.Manager",
2381                         "ListInhibitors",
2382                         NULL,
2383                         &reply,
2384                         NULL);
2385         if (r < 0)
2386                 /* If logind is not around, then there are no inhibitors... */
2387                 return 0;
2388
2389         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssuu)");
2390         if (r < 0)
2391                 return bus_log_parse_error(r);
2392
2393         while ((r = sd_bus_message_read(reply, "(ssssuu)", &what, &who, &why, &mode, &uid, &pid)) > 0) {
2394                 _cleanup_free_ char *comm = NULL, *user = NULL;
2395                 _cleanup_strv_free_ char **sv = NULL;
2396
2397                 if (!streq(mode, "block"))
2398                         continue;
2399
2400                 sv = strv_split(what, ":");
2401                 if (!sv)
2402                         return log_oom();
2403
2404                 if (!strv_contains(sv,
2405                                   a == ACTION_HALT ||
2406                                   a == ACTION_POWEROFF ||
2407                                   a == ACTION_REBOOT ||
2408                                   a == ACTION_KEXEC ? "shutdown" : "sleep"))
2409                         continue;
2410
2411                 get_process_comm(pid, &comm);
2412                 user = uid_to_name(uid);
2413
2414                 log_warning("Operation inhibited by \"%s\" (PID %lu \"%s\", user %s), reason is \"%s\".",
2415                             who, (unsigned long) pid, strna(comm), strna(user), why);
2416
2417                 c++;
2418         }
2419         if (r < 0)
2420                 return bus_log_parse_error(r);
2421
2422         r = sd_bus_message_exit_container(reply);
2423         if (r < 0)
2424                 return bus_log_parse_error(r);
2425
2426         /* Check for current sessions */
2427         sd_get_sessions(&sessions);
2428         STRV_FOREACH(s, sessions) {
2429                 _cleanup_free_ char *type = NULL, *tty = NULL, *seat = NULL, *user = NULL, *service = NULL, *class = NULL;
2430
2431                 if (sd_session_get_uid(*s, &uid) < 0 || uid == getuid())
2432                         continue;
2433
2434                 if (sd_session_get_class(*s, &class) < 0 || !streq(class, "user"))
2435                         continue;
2436
2437                 if (sd_session_get_type(*s, &type) < 0 || (!streq(type, "x11") && !streq(type, "tty")))
2438                         continue;
2439
2440                 sd_session_get_tty(*s, &tty);
2441                 sd_session_get_seat(*s, &seat);
2442                 sd_session_get_service(*s, &service);
2443                 user = uid_to_name(uid);
2444
2445                 log_warning("User %s is logged in on %s.", strna(user), isempty(tty) ? (isempty(seat) ? strna(service) : seat) : tty);
2446                 c++;
2447         }
2448
2449         if (c <= 0)
2450                 return 0;
2451
2452         log_error("Please retry operation after closing inhibitors and logging out other users.\nAlternatively, ignore inhibitors and users with 'systemctl %s -i'.",
2453                   action_table[a].verb);
2454
2455         return -EPERM;
2456 #else
2457         return 0;
2458 #endif
2459 }
2460
2461 static int start_special(sd_bus *bus, char **args) {
2462         enum action a;
2463         int r;
2464
2465         assert(args);
2466
2467         a = verb_to_action(args[0]);
2468
2469         r = check_inhibitors(bus, a);
2470         if (r < 0)
2471                 return r;
2472
2473         if (arg_force >= 2 && geteuid() != 0) {
2474                 log_error("Must be root.");
2475                 return -EPERM;
2476         }
2477
2478         if (arg_force >= 2 &&
2479             (a == ACTION_HALT ||
2480              a == ACTION_POWEROFF ||
2481              a == ACTION_REBOOT))
2482                 return halt_now(a);
2483
2484         if (arg_force >= 1 &&
2485             (a == ACTION_HALT ||
2486              a == ACTION_POWEROFF ||
2487              a == ACTION_REBOOT ||
2488              a == ACTION_KEXEC ||
2489              a == ACTION_EXIT))
2490                 return daemon_reload(bus, args);
2491
2492         /* first try logind, to allow authentication with polkit */
2493         if (geteuid() != 0 &&
2494             (a == ACTION_POWEROFF ||
2495              a == ACTION_REBOOT ||
2496              a == ACTION_SUSPEND ||
2497              a == ACTION_HIBERNATE ||
2498              a == ACTION_HYBRID_SLEEP)) {
2499                 r = reboot_with_logind(bus, a);
2500                 if (r >= 0)
2501                         return r;
2502         }
2503
2504         r = start_unit(bus, args);
2505         if (r == EXIT_SUCCESS)
2506                 warn_wall(a);
2507
2508         return r;
2509 }
2510
2511 static int check_unit_generic(sd_bus *bus, int code, const char *good_states, char **args) {
2512         _cleanup_strv_free_ char **names = NULL;
2513         char **name;
2514         int r = code;
2515
2516         assert(bus);
2517         assert(args);
2518
2519         r = expand_names(bus, args, NULL, &names);
2520         if (r < 0)
2521                 log_error("Failed to expand names: %s", strerror(-r));
2522
2523         STRV_FOREACH(name, names) {
2524                 int state;
2525
2526                 state = check_one_unit(bus, *name, good_states, arg_quiet);
2527                 if (state < 0)
2528                         return state;
2529                 if (state > 0)
2530                         r = 0;
2531         }
2532
2533         return r;
2534 }
2535
2536 static int check_unit_active(sd_bus *bus, char **args) {
2537         /* According to LSB: 3, "program is not running" */
2538         return check_unit_generic(bus, 3, "active\0reloading\0", args + 1);
2539 }
2540
2541 static int check_unit_failed(sd_bus *bus, char **args) {
2542         return check_unit_generic(bus, 1, "failed\0", args + 1);
2543 }
2544
2545 static int kill_unit(sd_bus *bus, char **args) {
2546         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2547         _cleanup_strv_free_ char **names = NULL;
2548         char **name;
2549         int r, q;
2550
2551         assert(bus);
2552         assert(args);
2553
2554         if (!arg_kill_who)
2555                 arg_kill_who = "all";
2556
2557         r = expand_names(bus, args + 1, NULL, &names);
2558         if (r < 0)
2559                 log_error("Failed to expand names: %s", strerror(-r));
2560
2561         STRV_FOREACH(name, names) {
2562                 q = sd_bus_call_method(
2563                                 bus,
2564                                 "org.freedesktop.systemd1",
2565                                 "/org/freedesktop/systemd1",
2566                                 "org.freedesktop.systemd1.Manager",
2567                                 "KillUnit",
2568                                 &error,
2569                                 NULL,
2570                                 "ssi", *names, arg_kill_who, arg_signal);
2571                 if (q < 0) {
2572                         log_error("Failed to kill unit %s: %s",
2573                                   *names, bus_error_message(&error, r));
2574                         if (r == 0)
2575                                 r = q;
2576                 }
2577         }
2578
2579         return r;
2580 }
2581
2582 typedef struct ExecStatusInfo {
2583         char *name;
2584
2585         char *path;
2586         char **argv;
2587
2588         bool ignore;
2589
2590         usec_t start_timestamp;
2591         usec_t exit_timestamp;
2592         pid_t pid;
2593         int code;
2594         int status;
2595
2596         LIST_FIELDS(struct ExecStatusInfo, exec);
2597 } ExecStatusInfo;
2598
2599 static void exec_status_info_free(ExecStatusInfo *i) {
2600         assert(i);
2601
2602         free(i->name);
2603         free(i->path);
2604         strv_free(i->argv);
2605         free(i);
2606 }
2607
2608 static int exec_status_info_deserialize(sd_bus_message *m, ExecStatusInfo *i) {
2609         uint64_t start_timestamp, exit_timestamp, start_timestamp_monotonic, exit_timestamp_monotonic;
2610         const char *path;
2611         uint32_t pid;
2612         int32_t code, status;
2613         int ignore, r;
2614
2615         assert(m);
2616         assert(i);
2617
2618         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_STRUCT, "sasbttttuii");
2619         if (r < 0)
2620                 return bus_log_parse_error(r);
2621         else if (r == 0)
2622                 return 0;
2623
2624         r = sd_bus_message_read(m, "s", &path);
2625         if (r < 0)
2626                 return bus_log_parse_error(r);
2627
2628         i->path = strdup(path);
2629         if (!i->path)
2630                 return log_oom();
2631
2632         r = sd_bus_message_read_strv(m, &i->argv);
2633         if (r < 0)
2634                 return bus_log_parse_error(r);
2635
2636         r = sd_bus_message_read(m,
2637                                 "bttttuii",
2638                                 &ignore,
2639                                 &start_timestamp, &start_timestamp_monotonic,
2640                                 &exit_timestamp, &exit_timestamp_monotonic,
2641                                 &pid,
2642                                 &code, &status);
2643         if (r < 0)
2644                 return bus_log_parse_error(r);
2645
2646         i->ignore = ignore;
2647         i->start_timestamp = (usec_t) start_timestamp;
2648         i->exit_timestamp = (usec_t) exit_timestamp;
2649         i->pid = (pid_t) pid;
2650         i->code = code;
2651         i->status = status;
2652
2653         r = sd_bus_message_exit_container(m);
2654         if (r < 0)
2655                 return bus_log_parse_error(r);
2656
2657         return 1;
2658 }
2659
2660 typedef struct UnitStatusInfo {
2661         const char *id;
2662         const char *load_state;
2663         const char *active_state;
2664         const char *sub_state;
2665         const char *unit_file_state;
2666
2667         const char *description;
2668         const char *following;
2669
2670         char **documentation;
2671
2672         const char *fragment_path;
2673         const char *source_path;
2674         const char *control_group;
2675
2676         char **dropin_paths;
2677
2678         const char *load_error;
2679         const char *result;
2680
2681         usec_t inactive_exit_timestamp;
2682         usec_t inactive_exit_timestamp_monotonic;
2683         usec_t active_enter_timestamp;
2684         usec_t active_exit_timestamp;
2685         usec_t inactive_enter_timestamp;
2686
2687         bool need_daemon_reload;
2688
2689         /* Service */
2690         pid_t main_pid;
2691         pid_t control_pid;
2692         const char *status_text;
2693         const char *pid_file;
2694         bool running:1;
2695
2696         usec_t start_timestamp;
2697         usec_t exit_timestamp;
2698
2699         int exit_code, exit_status;
2700
2701         usec_t condition_timestamp;
2702         bool condition_result;
2703         bool failed_condition_trigger;
2704         bool failed_condition_negate;
2705         const char *failed_condition;
2706         const char *failed_condition_param;
2707
2708         /* Socket */
2709         unsigned n_accepted;
2710         unsigned n_connections;
2711         bool accept;
2712
2713         /* Pairs of type, path */
2714         char **listen;
2715
2716         /* Device */
2717         const char *sysfs_path;
2718
2719         /* Mount, Automount */
2720         const char *where;
2721
2722         /* Swap */
2723         const char *what;
2724
2725         LIST_HEAD(ExecStatusInfo, exec);
2726 } UnitStatusInfo;
2727
2728 static void print_status_info(
2729                 UnitStatusInfo *i,
2730                 bool *ellipsized) {
2731
2732         ExecStatusInfo *p;
2733         const char *on, *off, *ss;
2734         usec_t timestamp;
2735         char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], *s1;
2736         char since2[FORMAT_TIMESTAMP_MAX], *s2;
2737         const char *path;
2738         int flags =
2739                 arg_all * OUTPUT_SHOW_ALL |
2740                 (!on_tty() || pager_have()) * OUTPUT_FULL_WIDTH |
2741                 on_tty() * OUTPUT_COLOR |
2742                 !arg_quiet * OUTPUT_WARN_CUTOFF |
2743                 arg_full * OUTPUT_FULL_WIDTH;
2744         char **t, **t2;
2745
2746         assert(i);
2747
2748         /* This shows pretty information about a unit. See
2749          * print_property() for a low-level property printer */
2750
2751         printf("%s", strna(i->id));
2752
2753         if (i->description && !streq_ptr(i->id, i->description))
2754                 printf(" - %s", i->description);
2755
2756         printf("\n");
2757
2758         if (i->following)
2759                 printf("   Follow: unit currently follows state of %s\n", i->following);
2760
2761         if (streq_ptr(i->load_state, "error")) {
2762                 on = ansi_highlight_red();
2763                 off = ansi_highlight_off();
2764         } else
2765                 on = off = "";
2766
2767         path = i->source_path ? i->source_path : i->fragment_path;
2768
2769         if (i->load_error)
2770                 printf("   Loaded: %s%s%s (Reason: %s)\n",
2771                        on, strna(i->load_state), off, i->load_error);
2772         else if (path && i->unit_file_state)
2773                 printf("   Loaded: %s%s%s (%s; %s)\n",
2774                        on, strna(i->load_state), off, path, i->unit_file_state);
2775         else if (path)
2776                 printf("   Loaded: %s%s%s (%s)\n",
2777                        on, strna(i->load_state), off, path);
2778         else
2779                 printf("   Loaded: %s%s%s\n",
2780                        on, strna(i->load_state), off);
2781
2782         if (!strv_isempty(i->dropin_paths)) {
2783                 _cleanup_free_ char *dir = NULL;
2784                 bool last = false;
2785                 char ** dropin;
2786
2787                 STRV_FOREACH(dropin, i->dropin_paths) {
2788                         if (! dir || last) {
2789                                 printf(dir ? "        " : "  Drop-In: ");
2790
2791                                 free(dir);
2792                                 dir = NULL;
2793
2794                                 if (path_get_parent(*dropin, &dir) < 0) {
2795                                         log_oom();
2796                                         return;
2797                                 }
2798
2799                                 printf("%s\n           %s", dir,
2800                                        draw_special_char(DRAW_TREE_RIGHT));
2801                         }
2802
2803                         last = ! (*(dropin + 1) && startswith(*(dropin + 1), dir));
2804
2805                         printf("%s%s", basename(*dropin), last ? "\n" : ", ");
2806                 }
2807         }
2808
2809         ss = streq_ptr(i->active_state, i->sub_state) ? NULL : i->sub_state;
2810
2811         if (streq_ptr(i->active_state, "failed")) {
2812                 on = ansi_highlight_red();
2813                 off = ansi_highlight_off();
2814         } else if (streq_ptr(i->active_state, "active") || streq_ptr(i->active_state, "reloading")) {
2815                 on = ansi_highlight_green();
2816                 off = ansi_highlight_off();
2817         } else
2818                 on = off = "";
2819
2820         if (ss)
2821                 printf("   Active: %s%s (%s)%s",
2822                        on, strna(i->active_state), ss, off);
2823         else
2824                 printf("   Active: %s%s%s",
2825                        on, strna(i->active_state), off);
2826
2827         if (!isempty(i->result) && !streq(i->result, "success"))
2828                 printf(" (Result: %s)", i->result);
2829
2830         timestamp = (streq_ptr(i->active_state, "active")      ||
2831                      streq_ptr(i->active_state, "reloading"))   ? i->active_enter_timestamp :
2832                     (streq_ptr(i->active_state, "inactive")    ||
2833                      streq_ptr(i->active_state, "failed"))      ? i->inactive_enter_timestamp :
2834                     streq_ptr(i->active_state, "activating")    ? i->inactive_exit_timestamp :
2835                                                                   i->active_exit_timestamp;
2836
2837         s1 = format_timestamp_relative(since1, sizeof(since1), timestamp);
2838         s2 = format_timestamp(since2, sizeof(since2), timestamp);
2839
2840         if (s1)
2841                 printf(" since %s; %s\n", s2, s1);
2842         else if (s2)
2843                 printf(" since %s\n", s2);
2844         else
2845                 printf("\n");
2846
2847         if (!i->condition_result && i->condition_timestamp > 0) {
2848                 s1 = format_timestamp_relative(since1, sizeof(since1), i->condition_timestamp);
2849                 s2 = format_timestamp(since2, sizeof(since2), i->condition_timestamp);
2850
2851                 printf("           start condition failed at %s%s%s\n",
2852                        s2, s1 ? "; " : "", s1 ? s1 : "");
2853                 if (i->failed_condition_trigger)
2854                         printf("           none of the trigger conditions were met\n");
2855                 else if (i->failed_condition)
2856                         printf("           %s=%s%s was not met\n",
2857                                i->failed_condition,
2858                                i->failed_condition_negate ? "!" : "",
2859                                i->failed_condition_param);
2860         }
2861
2862         if (i->sysfs_path)
2863                 printf("   Device: %s\n", i->sysfs_path);
2864         if (i->where)
2865                 printf("    Where: %s\n", i->where);
2866         if (i->what)
2867                 printf("     What: %s\n", i->what);
2868
2869         STRV_FOREACH(t, i->documentation)
2870                 printf(" %*s %s\n", 9, t == i->documentation ? "Docs:" : "", *t);
2871
2872         STRV_FOREACH_PAIR(t, t2, i->listen)
2873                 printf(" %*s %s (%s)\n", 9, t == i->listen ? "Listen:" : "", *t2, *t);
2874
2875         if (i->accept)
2876                 printf(" Accepted: %u; Connected: %u\n", i->n_accepted, i->n_connections);
2877
2878         LIST_FOREACH(exec, p, i->exec) {
2879                 _cleanup_free_ char *argv = NULL;
2880                 bool good;
2881
2882                 /* Only show exited processes here */
2883                 if (p->code == 0)
2884                         continue;
2885
2886                 argv = strv_join(p->argv, " ");
2887                 printf("  Process: %u %s=%s ", p->pid, p->name, strna(argv));
2888
2889                 good = is_clean_exit_lsb(p->code, p->status, NULL);
2890                 if (!good) {
2891                         on = ansi_highlight_red();
2892                         off = ansi_highlight_off();
2893                 } else
2894                         on = off = "";
2895
2896                 printf("%s(code=%s, ", on, sigchld_code_to_string(p->code));
2897
2898                 if (p->code == CLD_EXITED) {
2899                         const char *c;
2900
2901                         printf("status=%i", p->status);
2902
2903                         c = exit_status_to_string(p->status, EXIT_STATUS_SYSTEMD);
2904                         if (c)
2905                                 printf("/%s", c);
2906
2907                 } else
2908                         printf("signal=%s", signal_to_string(p->status));
2909
2910                 printf(")%s\n", off);
2911
2912                 if (i->main_pid == p->pid &&
2913                     i->start_timestamp == p->start_timestamp &&
2914                     i->exit_timestamp == p->start_timestamp)
2915                         /* Let's not show this twice */
2916                         i->main_pid = 0;
2917
2918                 if (p->pid == i->control_pid)
2919                         i->control_pid = 0;
2920         }
2921
2922         if (i->main_pid > 0 || i->control_pid > 0) {
2923                 if (i->main_pid > 0) {
2924                         printf(" Main PID: %u", (unsigned) i->main_pid);
2925
2926                         if (i->running) {
2927                                 _cleanup_free_ char *comm = NULL;
2928                                 get_process_comm(i->main_pid, &comm);
2929                                 if (comm)
2930                                         printf(" (%s)", comm);
2931                         } else if (i->exit_code > 0) {
2932                                 printf(" (code=%s, ", sigchld_code_to_string(i->exit_code));
2933
2934                                 if (i->exit_code == CLD_EXITED) {
2935                                         const char *c;
2936
2937                                         printf("status=%i", i->exit_status);
2938
2939                                         c = exit_status_to_string(i->exit_status, EXIT_STATUS_SYSTEMD);
2940                                         if (c)
2941                                                 printf("/%s", c);
2942
2943                                 } else
2944                                         printf("signal=%s", signal_to_string(i->exit_status));
2945                                 printf(")");
2946                         }
2947
2948                         if (i->control_pid > 0)
2949                                 printf(";");
2950                 }
2951
2952                 if (i->control_pid > 0) {
2953                         _cleanup_free_ char *c = NULL;
2954
2955                         printf(" %8s: %u", i->main_pid ? "" : " Control", (unsigned) i->control_pid);
2956
2957                         get_process_comm(i->control_pid, &c);
2958                         if (c)
2959                                 printf(" (%s)", c);
2960                 }
2961
2962                 printf("\n");
2963         }
2964
2965         if (i->status_text)
2966                 printf("   Status: \"%s\"\n", i->status_text);
2967
2968         if (i->control_group &&
2969             (i->main_pid > 0 || i->control_pid > 0 || cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, i->control_group, false) == 0)) {
2970                 unsigned c;
2971
2972                 printf("   CGroup: %s\n", i->control_group);
2973
2974                 if (arg_transport == BUS_TRANSPORT_LOCAL || arg_transport == BUS_TRANSPORT_CONTAINER) {
2975                         unsigned k = 0;
2976                         pid_t extra[2];
2977                         char prefix[] = "           ";
2978
2979                         c = columns();
2980                         if (c > sizeof(prefix) - 1)
2981                                 c -= sizeof(prefix) - 1;
2982                         else
2983                                 c = 0;
2984
2985                         if (i->main_pid > 0)
2986                                 extra[k++] = i->main_pid;
2987
2988                         if (i->control_pid > 0)
2989                                 extra[k++] = i->control_pid;
2990
2991                         show_cgroup_and_extra(SYSTEMD_CGROUP_CONTROLLER, i->control_group, prefix,
2992                                                       c, false, extra, k, flags);
2993                 }
2994         }
2995
2996         if (i->id && arg_transport == BUS_TRANSPORT_LOCAL) {
2997                 printf("\n");
2998                 show_journal_by_unit(stdout,
2999                                      i->id,
3000                                      arg_output,
3001                                      0,
3002                                      i->inactive_exit_timestamp_monotonic,
3003                                      arg_lines,
3004                                      getuid(),
3005                                      flags,
3006                                      arg_scope == UNIT_FILE_SYSTEM,
3007                                      ellipsized);
3008         }
3009
3010         if (i->need_daemon_reload)
3011                 printf("\n%sWarning:%s Unit file changed on disk, 'systemctl %sdaemon-reload' recommended.\n",
3012                        ansi_highlight_red(),
3013                        ansi_highlight_off(),
3014                        arg_scope == UNIT_FILE_SYSTEM ? "" : "--user ");
3015 }
3016
3017 static void show_unit_help(UnitStatusInfo *i) {
3018         char **p;
3019
3020         assert(i);
3021
3022         if (!i->documentation) {
3023                 log_info("Documentation for %s not known.", i->id);
3024                 return;
3025         }
3026
3027         STRV_FOREACH(p, i->documentation) {
3028
3029                 if (startswith(*p, "man:")) {
3030                         const char *args[4] = { "man", NULL, NULL, NULL };
3031                         _cleanup_free_ char *page = NULL, *section = NULL;
3032                         char *e = NULL;
3033                         pid_t pid;
3034                         size_t k;
3035
3036                         k = strlen(*p);
3037
3038                         if ((*p)[k-1] == ')')
3039                                 e = strrchr(*p, '(');
3040
3041                         if (e) {
3042                                 page = strndup((*p) + 4, e - *p - 4);
3043                                 section = strndup(e + 1, *p + k - e - 2);
3044                                 if (!page || !section) {
3045                                         log_oom();
3046                                         return;
3047                                 }
3048
3049                                 args[1] = section;
3050                                 args[2] = page;
3051                         } else
3052                                 args[1] = *p + 4;
3053
3054                         pid = fork();
3055                         if (pid < 0) {
3056                                 log_error("Failed to fork: %m");
3057                                 continue;
3058                         }
3059
3060                         if (pid == 0) {
3061                                 /* Child */
3062                                 execvp(args[0], (char**) args);
3063                                 log_error("Failed to execute man: %m");
3064                                 _exit(EXIT_FAILURE);
3065                         }
3066
3067                         wait_for_terminate(pid, NULL);
3068                 } else
3069                         log_info("Can't show: %s", *p);
3070         }
3071 }
3072
3073 static int status_property(const char *name, sd_bus_message *m, UnitStatusInfo *i, const char *contents) {
3074         int r;
3075
3076         assert(name);
3077         assert(m);
3078         assert(i);
3079
3080         switch (contents[0]) {
3081
3082         case SD_BUS_TYPE_STRING: {
3083                 const char *s;
3084
3085                 r = sd_bus_message_read(m, "s", &s);
3086                 if (r < 0)
3087                         return bus_log_parse_error(r);
3088
3089                 if (!isempty(s)) {
3090                         if (streq(name, "Id"))
3091                                 i->id = s;
3092                         else if (streq(name, "LoadState"))
3093                                 i->load_state = s;
3094                         else if (streq(name, "ActiveState"))
3095                                 i->active_state = s;
3096                         else if (streq(name, "SubState"))
3097                                 i->sub_state = s;
3098                         else if (streq(name, "Description"))
3099                                 i->description = s;
3100                         else if (streq(name, "FragmentPath"))
3101                                 i->fragment_path = s;
3102                         else if (streq(name, "SourcePath"))
3103                                 i->source_path = s;
3104 #ifndef NOLEGACY
3105                         else if (streq(name, "DefaultControlGroup")) {
3106                                 const char *e;
3107                                 e = startswith(s, SYSTEMD_CGROUP_CONTROLLER ":");
3108                                 if (e)
3109                                         i->control_group = e;
3110                         }
3111 #endif
3112                         else if (streq(name, "ControlGroup"))
3113                                 i->control_group = s;
3114                         else if (streq(name, "StatusText"))
3115                                 i->status_text = s;
3116                         else if (streq(name, "PIDFile"))
3117                                 i->pid_file = s;
3118                         else if (streq(name, "SysFSPath"))
3119                                 i->sysfs_path = s;
3120                         else if (streq(name, "Where"))
3121                                 i->where = s;
3122                         else if (streq(name, "What"))
3123                                 i->what = s;
3124                         else if (streq(name, "Following"))
3125                                 i->following = s;
3126                         else if (streq(name, "UnitFileState"))
3127                                 i->unit_file_state = s;
3128                         else if (streq(name, "Result"))
3129                                 i->result = s;
3130                 }
3131
3132                 break;
3133         }
3134
3135         case SD_BUS_TYPE_BOOLEAN: {
3136                 int b;
3137
3138                 r = sd_bus_message_read(m, "b", &b);
3139                 if (r < 0)
3140                         return bus_log_parse_error(r);
3141
3142                 if (streq(name, "Accept"))
3143                         i->accept = b;
3144                 else if (streq(name, "NeedDaemonReload"))
3145                         i->need_daemon_reload = b;
3146                 else if (streq(name, "ConditionResult"))
3147                         i->condition_result = b;
3148
3149                 break;
3150         }
3151
3152         case SD_BUS_TYPE_UINT32: {
3153                 uint32_t u;
3154
3155                 r = sd_bus_message_read(m, "u", &u);
3156                 if (r < 0)
3157                         return bus_log_parse_error(r);
3158
3159                 if (streq(name, "MainPID")) {
3160                         if (u > 0) {
3161                                 i->main_pid = (pid_t) u;
3162                                 i->running = true;
3163                         }
3164                 } else if (streq(name, "ControlPID"))
3165                         i->control_pid = (pid_t) u;
3166                 else if (streq(name, "ExecMainPID")) {
3167                         if (u > 0)
3168                                 i->main_pid = (pid_t) u;
3169                 } else if (streq(name, "NAccepted"))
3170                         i->n_accepted = u;
3171                 else if (streq(name, "NConnections"))
3172                         i->n_connections = u;
3173
3174                 break;
3175         }
3176
3177         case SD_BUS_TYPE_INT32: {
3178                 int32_t j;
3179
3180                 r = sd_bus_message_read(m, "i", &j);
3181                 if (r < 0)
3182                         return bus_log_parse_error(r);
3183
3184                 if (streq(name, "ExecMainCode"))
3185                         i->exit_code = (int) j;
3186                 else if (streq(name, "ExecMainStatus"))
3187                         i->exit_status = (int) j;
3188
3189                 break;
3190         }
3191
3192         case SD_BUS_TYPE_UINT64: {
3193                 uint64_t u;
3194
3195                 r = sd_bus_message_read(m, "t", &u);
3196                 if (r < 0)
3197                         return bus_log_parse_error(r);
3198
3199                 if (streq(name, "ExecMainStartTimestamp"))
3200                         i->start_timestamp = (usec_t) u;
3201                 else if (streq(name, "ExecMainExitTimestamp"))
3202                         i->exit_timestamp = (usec_t) u;
3203                 else if (streq(name, "ActiveEnterTimestamp"))
3204                         i->active_enter_timestamp = (usec_t) u;
3205                 else if (streq(name, "InactiveEnterTimestamp"))
3206                         i->inactive_enter_timestamp = (usec_t) u;
3207                 else if (streq(name, "InactiveExitTimestamp"))
3208                         i->inactive_exit_timestamp = (usec_t) u;
3209                 else if (streq(name, "InactiveExitTimestampMonotonic"))
3210                         i->inactive_exit_timestamp_monotonic = (usec_t) u;
3211                 else if (streq(name, "ActiveExitTimestamp"))
3212                         i->active_exit_timestamp = (usec_t) u;
3213                 else if (streq(name, "ConditionTimestamp"))
3214                         i->condition_timestamp = (usec_t) u;
3215
3216                 break;
3217         }
3218
3219         case SD_BUS_TYPE_ARRAY:
3220
3221                 if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && startswith(name, "Exec")) {
3222                         _cleanup_free_ ExecStatusInfo *info = NULL;
3223
3224                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sasbttttuii)");
3225                         if (r < 0)
3226                                 return bus_log_parse_error(r);
3227
3228                         info = new0(ExecStatusInfo, 1);
3229                         if (!info)
3230                                 return log_oom();
3231
3232                         while ((r = exec_status_info_deserialize(m, info)) > 0) {
3233
3234                                 info->name = strdup(name);
3235                                 if (!info->name)
3236                                         log_oom();
3237
3238                                 LIST_PREPEND(exec, i->exec, info);
3239
3240                                 info = new0(ExecStatusInfo, 1);
3241                                 if (!info)
3242                                         log_oom();
3243                         }
3244
3245                         if (r < 0)
3246                                 return bus_log_parse_error(r);
3247
3248                         r = sd_bus_message_exit_container(m);
3249                         if (r < 0)
3250                                 return bus_log_parse_error(r);
3251
3252                         return 0;
3253
3254                 } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "Listen")) {
3255                         const char *type, *path;
3256
3257                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(ss)");
3258                         if (r < 0)
3259                                 return bus_log_parse_error(r);
3260
3261                         while ((r = sd_bus_message_read(m, "(ss)", &type, &path)) > 0) {
3262
3263                                 r = strv_extend(&i->listen, type);
3264                                 if (r < 0)
3265                                         return r;
3266
3267                                 r = strv_extend(&i->listen, path);
3268                                 if (r < 0)
3269                                         return r;
3270                         }
3271                         if (r < 0)
3272                                 return bus_log_parse_error(r);
3273
3274                         r = sd_bus_message_exit_container(m);
3275                         if (r < 0)
3276                                 return bus_log_parse_error(r);
3277
3278                         return 0;
3279
3280                 } else if (contents[1] == SD_BUS_TYPE_STRING && streq(name, "DropInPaths")) {
3281
3282                         r = sd_bus_message_read_strv(m, &i->dropin_paths);
3283                         if (r < 0)
3284                                 return bus_log_parse_error(r);
3285
3286                 } else if (contents[1] == SD_BUS_TYPE_STRING && streq(name, "Documentation")) {
3287
3288                         r = sd_bus_message_read_strv(m, &i->documentation);
3289                         if (r < 0)
3290                                 return bus_log_parse_error(r);
3291
3292                 } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "Conditions")) {
3293                         const char *cond, *param;
3294                         int trigger, negate;
3295                         int32_t state;
3296
3297                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sbbsi)");
3298                         if (r < 0)
3299                                 return bus_log_parse_error(r);
3300
3301                         while ((r = sd_bus_message_read(m, "(sbbsi)", &cond, &trigger, &negate, &param, &state)) > 0) {
3302                                 log_debug("%s %d %d %s %d", cond, trigger, negate, param, state);
3303                                 if (state < 0 && (!trigger || !i->failed_condition)) {
3304                                         i->failed_condition = cond;
3305                                         i->failed_condition_trigger = trigger;
3306                                         i->failed_condition_negate = negate;
3307                                         i->failed_condition_param = param;
3308                                 }
3309                         }
3310                         if (r < 0)
3311                                 return bus_log_parse_error(r);
3312
3313                         r = sd_bus_message_exit_container(m);
3314                         if (r < 0)
3315                                 return bus_log_parse_error(r);
3316
3317                 } else
3318                         goto skip;
3319
3320                 break;
3321
3322         case SD_BUS_TYPE_STRUCT_BEGIN:
3323
3324                 if (streq(name, "LoadError")) {
3325                         const char *n, *message;
3326
3327                         r = sd_bus_message_read(m, "(ss)", &n, &message);
3328                         if (r < 0)
3329                                 return bus_log_parse_error(r);
3330
3331                         if (!isempty(message))
3332                                 i->load_error = message;
3333                 } else
3334                         goto skip;
3335
3336                 break;
3337
3338         default:
3339                 goto skip;
3340         }
3341
3342         return 0;
3343
3344 skip:
3345         r = sd_bus_message_skip(m, contents);
3346         if (r < 0)
3347                 return bus_log_parse_error(r);
3348
3349         return 0;
3350 }
3351
3352 static int print_property(const char *name, sd_bus_message *m, const char *contents) {
3353         int r;
3354
3355         assert(name);
3356         assert(m);
3357
3358         /* This is a low-level property printer, see
3359          * print_status_info() for the nicer output */
3360
3361         if (arg_properties && !strv_find(arg_properties, name)) {
3362                 /* skip what we didn't read */
3363                 r = sd_bus_message_skip(m, contents);
3364                 return r;
3365         }
3366
3367         switch (contents[0]) {
3368
3369         case SD_BUS_TYPE_STRUCT_BEGIN:
3370
3371                 if (contents[1] == SD_BUS_TYPE_UINT32 && streq(name, "Job")) {
3372                         uint32_t u;
3373
3374                         r = sd_bus_message_read(m, "(uo)", &u, NULL);
3375                         if (r < 0)
3376                                 return bus_log_parse_error(r);
3377
3378                         if (u > 0)
3379                                 printf("%s=%u\n", name, (unsigned) u);
3380                         else if (arg_all)
3381                                 printf("%s=\n", name);
3382
3383                         return 0;
3384
3385                 } else if (contents[1] == SD_BUS_TYPE_STRING && streq(name, "Unit")) {
3386                         const char *s;
3387
3388                         r = sd_bus_message_read(m, "(so)", &s, NULL);
3389                         if (r < 0)
3390                                 return bus_log_parse_error(r);
3391
3392                         if (arg_all || !isempty(s))
3393                                 printf("%s=%s\n", name, s);
3394
3395                         return 0;
3396
3397                 } else if (contents[1] == SD_BUS_TYPE_STRING && streq(name, "LoadError")) {
3398                         const char *a = NULL, *b = NULL;
3399
3400                         r = sd_bus_message_read(m, "(ss)", &a, &b);
3401                         if (r < 0)
3402                                 return bus_log_parse_error(r);
3403
3404                         if (arg_all || !isempty(a) || !isempty(b))
3405                                 printf("%s=%s \"%s\"\n", name, strempty(a), strempty(b));
3406
3407                         return 0;
3408                 }
3409
3410                 break;
3411
3412         case SD_BUS_TYPE_ARRAY:
3413
3414                 if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "EnvironmentFiles")) {
3415                         const char *path;
3416                         int ignore;
3417
3418                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sb)");
3419                         if (r < 0)
3420                                 return bus_log_parse_error(r);
3421
3422                         while ((r = sd_bus_message_read(m, "(sb)", &path, &ignore)) > 0)
3423                                 printf("EnvironmentFile=%s (ignore_errors=%s)\n", path, yes_no(ignore));
3424
3425                         if (r < 0)
3426                                 return bus_log_parse_error(r);
3427
3428                         r = sd_bus_message_exit_container(m);
3429                         if (r < 0)
3430                                 return bus_log_parse_error(r);
3431
3432                         return 0;
3433
3434                 } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "Paths")) {
3435                         const char *type, *path;
3436
3437                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(ss)");
3438                         if (r < 0)
3439                                 return bus_log_parse_error(r);
3440
3441                         while ((r = sd_bus_message_read(m, "(ss)", &type, &path)) > 0)
3442                                 printf("%s=%s\n", type, path);
3443                         if (r < 0)
3444                                 return bus_log_parse_error(r);
3445
3446                         r = sd_bus_message_exit_container(m);
3447                         if (r < 0)
3448                                 return bus_log_parse_error(r);
3449
3450                         return 0;
3451
3452                 } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "Listen")) {
3453                         const char *type, *path;
3454
3455                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(ss)");
3456                         if (r < 0)
3457                                 return bus_log_parse_error(r);
3458
3459                         while ((r = sd_bus_message_read(m, "(ss)", &type, &path)) > 0)
3460                                 printf("Listen%s=%s\n", type, path);
3461                         if (r < 0)
3462                                 return bus_log_parse_error(r);
3463
3464                         r = sd_bus_message_exit_container(m);
3465                         if (r < 0)
3466                                 return bus_log_parse_error(r);
3467
3468                         return 0;
3469
3470                 } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "Timers")) {
3471                         const char *base;
3472                         uint64_t value, next_elapse;
3473
3474                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(stt)");
3475                         if (r < 0)
3476                                 return bus_log_parse_error(r);
3477
3478                         while ((r = sd_bus_message_read(m, "(stt)", &base, &value, &next_elapse)) > 0) {
3479                                 char timespan1[FORMAT_TIMESPAN_MAX], timespan2[FORMAT_TIMESPAN_MAX];
3480
3481                                 printf("%s={ value=%s ; next_elapse=%s }\n",
3482                                        base,
3483                                        format_timespan(timespan1, sizeof(timespan1), value, 0),
3484                                        format_timespan(timespan2, sizeof(timespan2), next_elapse, 0));
3485                         }
3486                         if (r < 0)
3487                                 return bus_log_parse_error(r);
3488
3489                         r = sd_bus_message_exit_container(m);
3490                         if (r < 0)
3491                                 return bus_log_parse_error(r);
3492
3493                         return 0;
3494
3495                 } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && startswith(name, "Exec")) {
3496                         ExecStatusInfo info = {};
3497
3498                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sasbttttuii)");
3499                         if (r < 0)
3500                                 return bus_log_parse_error(r);
3501
3502                         while ((r = exec_status_info_deserialize(m, &info)) > 0) {
3503                                 char timestamp1[FORMAT_TIMESTAMP_MAX], timestamp2[FORMAT_TIMESTAMP_MAX];
3504                                 _cleanup_free_ char *tt;
3505
3506                                 tt = strv_join(info.argv, " ");
3507
3508                                 printf("%s={ path=%s ; argv[]=%s ; ignore_errors=%s ; start_time=[%s] ; stop_time=[%s] ; pid=%u ; code=%s ; status=%i%s%s }\n",
3509                                        name,
3510                                        strna(info.path),
3511                                        strna(tt),
3512                                        yes_no(info.ignore),
3513                                        strna(format_timestamp(timestamp1, sizeof(timestamp1), info.start_timestamp)),
3514                                        strna(format_timestamp(timestamp2, sizeof(timestamp2), info.exit_timestamp)),
3515                                        (unsigned) info. pid,
3516                                        sigchld_code_to_string(info.code),
3517                                        info.status,
3518                                        info.code == CLD_EXITED ? "" : "/",
3519                                        strempty(info.code == CLD_EXITED ? NULL : signal_to_string(info.status)));
3520
3521                                 free(info.path);
3522                                 strv_free(info.argv);
3523                                 zero(info);
3524                         }
3525
3526                         r = sd_bus_message_exit_container(m);
3527                         if (r < 0)
3528                                 return bus_log_parse_error(r);
3529
3530                         return 0;
3531
3532                 } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "DeviceAllow")) {
3533                         const char *path, *rwm;
3534
3535                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(ss)");
3536                         if (r < 0)
3537                                 return bus_log_parse_error(r);
3538
3539                         while ((r = sd_bus_message_read(m, "(ss)", &path, &rwm)) > 0)
3540                                 printf("%s=%s %s\n", name, strna(path), strna(rwm));
3541                         if (r < 0)
3542                                 return bus_log_parse_error(r);
3543
3544                         r = sd_bus_message_exit_container(m);
3545                         if (r < 0)
3546                                 return bus_log_parse_error(r);
3547
3548                         return 0;
3549
3550                 } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "BlockIODeviceWeight")) {
3551                         const char *path;
3552                         uint64_t weight;
3553
3554                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(st)");
3555                         if (r < 0)
3556                                 return bus_log_parse_error(r);
3557
3558                         while ((r = sd_bus_message_read(m, "(st)", &path, &weight)) > 0)
3559                                 printf("%s=%s %" PRIu64 "\n", name, strna(path), weight);
3560                         if (r < 0)
3561                                 return bus_log_parse_error(r);
3562
3563                         r = sd_bus_message_exit_container(m);
3564                         if (r < 0)
3565                                 return bus_log_parse_error(r);
3566
3567                         return 0;
3568
3569                 } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && (streq(name, "BlockIOReadBandwidth") || streq(name, "BlockIOWriteBandwidth"))) {
3570                         const char *path;
3571                         uint64_t bandwidth;
3572
3573                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(st)");
3574                         if (r < 0)
3575                                 return bus_log_parse_error(r);
3576
3577                         while ((r = sd_bus_message_read(m, "(st)", &path, &bandwidth)) > 0)
3578                                 printf("%s=%s %" PRIu64 "\n", name, strna(path), bandwidth);
3579                         if (r < 0)
3580                                 return bus_log_parse_error(r);
3581
3582                         r = sd_bus_message_exit_container(m);
3583                         if (r < 0)
3584                                 return bus_log_parse_error(r);
3585
3586                         return 0;
3587                 }
3588
3589                 break;
3590         }
3591
3592         r = bus_print_property(name, m, arg_all);
3593         if (r < 0)
3594                 return bus_log_parse_error(r);
3595
3596         if (r == 0) {
3597                 r = sd_bus_message_skip(m, contents);
3598                 if (r < 0)
3599                         return bus_log_parse_error(r);
3600
3601                 if (arg_all)
3602                         printf("%s=[unprintable]\n", name);
3603         }
3604
3605         return 0;
3606 }
3607
3608 static int show_one(
3609                 const char *verb,
3610                 sd_bus *bus,
3611                 const char *path,
3612                 bool show_properties,
3613                 bool *new_line,
3614                 bool *ellipsized) {
3615
3616         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
3617         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
3618         UnitStatusInfo info = {};
3619         ExecStatusInfo *p;
3620         int r;
3621
3622         assert(path);
3623         assert(new_line);
3624
3625         log_debug("Showing one %s", path);
3626
3627         r = sd_bus_call_method(
3628                         bus,
3629                         "org.freedesktop.systemd1",
3630                         path,
3631                         "org.freedesktop.DBus.Properties",
3632                         "GetAll",
3633                         &error,
3634                         &reply,
3635                         "s", "");
3636         if (r < 0) {
3637                 log_error("Failed to get properties: %s", bus_error_message(&error, r));
3638                 return r;
3639         }
3640
3641         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "{sv}");
3642         if (r < 0)
3643                 return bus_log_parse_error(r);
3644
3645         if (*new_line)
3646                 printf("\n");
3647
3648         *new_line = true;
3649
3650         while ((r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) {
3651                 const char *name, *contents;
3652
3653                 r = sd_bus_message_read(reply, "s", &name);
3654                 if (r < 0)
3655                         return bus_log_parse_error(r);
3656
3657                 r = sd_bus_message_peek_type(reply, NULL, &contents);
3658                 if (r < 0)
3659                         return bus_log_parse_error(r);
3660
3661                 r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_VARIANT, contents);
3662                 if (r < 0)
3663                         return bus_log_parse_error(r);
3664
3665                 if (show_properties)
3666                         r = print_property(name, reply, contents);
3667                 else
3668                         r = status_property(name, reply, &info, contents);
3669                 if (r < 0)
3670                         return r;
3671
3672                 r = sd_bus_message_exit_container(reply);
3673                 if (r < 0)
3674                         return bus_log_parse_error(r);
3675
3676                 r = sd_bus_message_exit_container(reply);
3677                 if (r < 0)
3678                         return bus_log_parse_error(r);
3679         }
3680         if (r < 0)
3681                 return bus_log_parse_error(r);
3682
3683         r = sd_bus_message_exit_container(reply);
3684         if (r < 0)
3685                 return bus_log_parse_error(r);
3686
3687         r = 0;
3688
3689         if (!show_properties) {
3690                 if (streq(verb, "help"))
3691                         show_unit_help(&info);
3692                 else
3693                         print_status_info(&info, ellipsized);
3694         }
3695
3696         strv_free(info.documentation);
3697         strv_free(info.dropin_paths);
3698         strv_free(info.listen);
3699
3700         if (!streq_ptr(info.active_state, "active") &&
3701             !streq_ptr(info.active_state, "reloading") &&
3702             streq(verb, "status")) {
3703                 /* According to LSB: "program not running" */
3704                 /* 0: program is running or service is OK
3705                  * 1: program is dead and /var/run pid file exists
3706                  * 2: program is dead and /var/lock lock file exists
3707                  * 3: program is not running
3708                  * 4: program or service status is unknown
3709                  */
3710                 if (info.pid_file && access(info.pid_file, F_OK) == 0)
3711                         r = 1;
3712                 else
3713                         r = 3;
3714         }
3715
3716         while ((p = info.exec)) {
3717                 LIST_REMOVE(exec, info.exec, p);
3718                 exec_status_info_free(p);
3719         }
3720
3721         return r;
3722 }
3723
3724 static int get_unit_dbus_path_by_pid(
3725                 sd_bus *bus,
3726                 uint32_t pid,
3727                 char **unit) {
3728
3729         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
3730         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
3731         char *u;
3732         int r;
3733
3734         r = sd_bus_call_method(
3735                         bus,
3736                         "org.freedesktop.systemd1",
3737                         "/org/freedesktop/systemd1",
3738                         "org.freedesktop.systemd1.Manager",
3739                         "GetUnitByPID",
3740                         &error,
3741                         &reply,
3742                         "u", pid);
3743         if (r < 0) {
3744                 log_error("Failed to get unit for PID %lu: %s", (unsigned long) pid, bus_error_message(&error, r));
3745                 return r;
3746         }
3747
3748         r = sd_bus_message_read(reply, "o", &u);
3749         if (r < 0)
3750                 return bus_log_parse_error(r);
3751
3752         u = strdup(u);
3753         if (!u)
3754                 return log_oom();
3755
3756         *unit = u;
3757         return 0;
3758 }
3759
3760 static int show_all(
3761                 const char* verb,
3762                 sd_bus *bus,
3763                 bool show_properties,
3764                 bool *new_line,
3765                 bool *ellipsized) {
3766
3767         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
3768         _cleanup_free_ UnitInfo *unit_infos = NULL;
3769         const UnitInfo *u;
3770         unsigned c;
3771         int r;
3772
3773         r = get_unit_list(bus, &reply, &unit_infos, NULL);
3774         if (r < 0)
3775                 return r;
3776
3777         pager_open_if_enabled();
3778
3779         c = (unsigned) r;
3780
3781         qsort_safe(unit_infos, c, sizeof(UnitInfo), compare_unit_info);
3782
3783         for (u = unit_infos; u < unit_infos + c; u++) {
3784                 _cleanup_free_ char *p = NULL;
3785
3786                 p = unit_dbus_path_from_name(u->id);
3787                 if (!p)
3788                         return log_oom();
3789
3790                 r = show_one(verb, bus, p, show_properties, new_line, ellipsized);
3791                 if (r != 0)
3792                         return r;
3793         }
3794
3795         return 0;
3796 }
3797
3798 static int cat(sd_bus *bus, char **args) {
3799         _cleanup_free_ char *unit = NULL;
3800         _cleanup_strv_free_ char **names = NULL;
3801         char **name;
3802         bool first = true;
3803         int r = 0;
3804
3805         assert(bus);
3806         assert(args);
3807
3808         r = expand_names(bus, args + 1, NULL, &names);
3809         if (r < 0)
3810                 log_error("Failed to expand names: %s", strerror(-r));
3811
3812         pager_open_if_enabled();
3813
3814         STRV_FOREACH(name, names) {
3815                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
3816                 _cleanup_strv_free_ char **dropin_paths = NULL;
3817                 _cleanup_free_ char *fragment_path = NULL;
3818                 char **path;
3819
3820                 unit = unit_dbus_path_from_name(*name);
3821                 if (!unit)
3822                         return log_oom();
3823
3824                 if (need_daemon_reload(bus, *name) > 0)
3825                         log_warning("Unit file of %s changed on disk. Run 'systemctl%s daemon-reload'.",
3826                                     *name, arg_scope == UNIT_FILE_SYSTEM ? "" : " --user");
3827
3828                 r = sd_bus_get_property_string(
3829                                 bus,
3830                                 "org.freedesktop.systemd1",
3831                                 unit,
3832                                 "org.freedesktop.systemd1.Unit",
3833                                 "FragmentPath",
3834                                 &error,
3835                                 &fragment_path);
3836                 if (r < 0) {
3837                         log_warning("Failed to get FragmentPath: %s", bus_error_message(&error, r));
3838                         continue;
3839                 }
3840
3841                 r = sd_bus_get_property_strv(
3842                                 bus,
3843                                 "org.freedesktop.systemd1",
3844                                 unit,
3845                                 "org.freedesktop.systemd1.Unit",
3846                                 "DropInPaths",
3847                                 &error,
3848                                 &dropin_paths);
3849                 if (r < 0) {
3850                         log_warning("Failed to get DropInPaths: %s", bus_error_message(&error, r));
3851                         continue;
3852                 }
3853
3854                 if (first)
3855                         first = false;
3856                 else
3857                         puts("");
3858
3859                 if (!isempty(fragment_path)) {
3860                         printf("%s# %s%s\n",
3861                                ansi_highlight_blue(),
3862                                fragment_path,
3863                                ansi_highlight_off());
3864                         fflush(stdout);
3865
3866                         r = sendfile_full(STDOUT_FILENO, fragment_path);
3867                         if (r < 0) {
3868                                 log_warning("Failed to cat %s: %s", fragment_path, strerror(-r));
3869                                 continue;
3870                         }
3871                 }
3872
3873                 STRV_FOREACH(path, dropin_paths) {
3874                         printf("%s%s# %s%s\n",
3875                                isempty(fragment_path) && path == dropin_paths ? "" : "\n",
3876                                ansi_highlight_blue(),
3877                                *path,
3878                                ansi_highlight_off());
3879                         fflush(stdout);
3880
3881                         r = sendfile_full(STDOUT_FILENO, *path);
3882                         if (r < 0) {
3883                                 log_warning("Failed to cat %s: %s", *path, strerror(-r));
3884                                 continue;
3885                         }
3886                 }
3887         }
3888
3889         return r < 0 ? r : 0;
3890 }
3891
3892 static int show(sd_bus *bus, char **args) {
3893         bool show_properties, show_status, new_line = false;
3894         bool ellipsized = false;
3895         int r, ret = 0;
3896
3897         assert(bus);
3898         assert(args);
3899
3900         show_properties = streq(args[0], "show");
3901         show_status = streq(args[0], "status");
3902
3903         if (show_properties)
3904                 pager_open_if_enabled();
3905
3906         /* If no argument is specified inspect the manager itself */
3907
3908         if (show_properties && strv_length(args) <= 1)
3909                 return show_one(args[0], bus, "/org/freedesktop/systemd1", show_properties, &new_line, &ellipsized);
3910
3911         if (show_status && strv_length(args) <= 1)
3912                 ret = show_all(args[0], bus, false, &new_line, &ellipsized);
3913         else {
3914                 _cleanup_free_ char **patterns = NULL;
3915                 char **name;
3916
3917                 STRV_FOREACH(name, args + 1) {
3918                         _cleanup_free_ char *unit = NULL;
3919                         uint32_t id;
3920
3921                         if (safe_atou32(*name, &id) < 0) {
3922                                 if (strv_push(&patterns, *name) < 0)
3923                                         return log_oom();
3924
3925                                 continue;
3926                         } else if (show_properties) {
3927                                 /* Interpret as job id */
3928                                 if (asprintf(&unit, "/org/freedesktop/systemd1/job/%u", id) < 0)
3929                                         return log_oom();
3930
3931                         } else {
3932                                 /* Interpret as PID */
3933                                 r = get_unit_dbus_path_by_pid(bus, id, &unit);
3934                                 if (r < 0) {
3935                                         ret = r;
3936                                         continue;
3937                                 }
3938                         }
3939
3940                         show_one(args[0], bus, unit, show_properties, &new_line, &ellipsized);
3941                 }
3942
3943                 if (!strv_isempty(patterns)) {
3944                         _cleanup_strv_free_ char **names = NULL;
3945
3946                         r = expand_names(bus, patterns, NULL, &names);
3947                         if (r < 0)
3948                                 log_error("Failed to expand names: %s", strerror(-r));
3949
3950                         STRV_FOREACH(name, names) {
3951                                 _cleanup_free_ char *unit;
3952
3953                                 unit = unit_dbus_path_from_name(*name);
3954                                 if (!unit)
3955                                         return log_oom();
3956
3957                                 show_one(args[0], bus, unit, show_properties, &new_line, &ellipsized);
3958                         }
3959                 }
3960         }
3961
3962         if (ellipsized && !arg_quiet)
3963                 printf("Hint: Some lines were ellipsized, use -l to show in full.\n");
3964
3965         return ret;
3966 }
3967
3968 static int append_assignment(sd_bus_message *m, const char *assignment) {
3969         const char *eq;
3970         char *field;
3971         int r;
3972
3973         assert(m);
3974         assert(assignment);
3975
3976         eq = strchr(assignment, '=');
3977         if (!eq) {
3978                 log_error("Not an assignment: %s", assignment);
3979                 return -EINVAL;
3980         }
3981
3982         field = strndupa(assignment, eq - assignment);
3983         eq ++;
3984
3985         r = sd_bus_message_append_basic(m, SD_BUS_TYPE_STRING, field);
3986         if (r < 0)
3987                 return bus_log_create_error(r);
3988
3989         if (streq(field, "CPUAccounting") ||
3990             streq(field, "MemoryAccounting") ||
3991             streq(field, "BlockIOAccounting")) {
3992
3993                 r = parse_boolean(eq);
3994                 if (r < 0) {
3995                         log_error("Failed to parse boolean assignment %s.", assignment);
3996                         return -EINVAL;
3997                 }
3998
3999                 r = sd_bus_message_append(m, "v", "b", r);
4000
4001         } else if (streq(field, "MemoryLimit")) {
4002                 off_t bytes;
4003
4004                 r = parse_bytes(eq, &bytes);
4005                 if (r < 0) {
4006                         log_error("Failed to parse bytes specification %s", assignment);
4007                         return -EINVAL;
4008                 }
4009
4010                 r = sd_bus_message_append(m, "v", "t", (uint64_t) bytes);
4011
4012         } else if (streq(field, "CPUShares") || streq(field, "BlockIOWeight")) {
4013                 uint64_t u;
4014
4015                 r = safe_atou64(eq, &u);
4016                 if (r < 0) {
4017                         log_error("Failed to parse %s value %s.", field, eq);
4018                         return -EINVAL;
4019                 }
4020
4021                 r = sd_bus_message_append(m, "v", "t", u);
4022
4023         } else if (streq(field, "DevicePolicy"))
4024                 r = sd_bus_message_append(m, "v", "s", eq);
4025
4026         else if (streq(field, "DeviceAllow")) {
4027
4028                 if (isempty(eq))
4029                         r = sd_bus_message_append(m, "v", "a(ss)", 0);
4030                 else {
4031                         const char *path, *rwm;
4032                         char *e;
4033
4034                         e = strchr(eq, ' ');
4035                         if (e) {
4036                                 path = strndupa(eq, e - eq);
4037                                 rwm = e+1;
4038                         } else {
4039                                 path = eq;
4040                                 rwm = "";
4041                         }
4042
4043                         if (!path_startswith(path, "/dev")) {
4044                                 log_error("%s is not a device file in /dev.", path);
4045                                 return -EINVAL;
4046                         }
4047
4048                         r = sd_bus_message_append(m, "v", "a(ss)", 1, path, rwm);
4049                 }
4050
4051         } else if (streq(field, "BlockIOReadBandwidth") || streq(field, "BlockIOWriteBandwidth")) {
4052
4053                 if (isempty(eq))
4054                         r = sd_bus_message_append(m, "v", "a(st)", 0);
4055                 else {
4056                         const char *path, *bandwidth;
4057                         off_t bytes;
4058                         char *e;
4059
4060                         e = strchr(eq, ' ');
4061                         if (e) {
4062                                 path = strndupa(eq, e - eq);
4063                                 bandwidth = e+1;
4064                         } else {
4065                                 log_error("Failed to parse %s value %s.", field, eq);
4066                                 return -EINVAL;
4067                         }
4068
4069                         if (!path_startswith(path, "/dev")) {
4070                                 log_error("%s is not a device file in /dev.", path);
4071                                 return -EINVAL;
4072                         }
4073
4074                         r = parse_bytes(bandwidth, &bytes);
4075                         if (r < 0) {
4076                                 log_error("Failed to parse byte value %s.", bandwidth);
4077                                 return -EINVAL;
4078                         }
4079
4080                         r = sd_bus_message_append(m, "v", "a(st)", 1, path, (uint64_t) bytes);
4081                 }
4082
4083         } else if (streq(field, "BlockIODeviceWeight")) {
4084
4085                 if (isempty(eq))
4086                         r = sd_bus_message_append(m, "v", "a(st)", 0);
4087                 else {
4088                         const char *path, *weight;
4089                         uint64_t u;
4090                         char *e;
4091
4092                         e = strchr(eq, ' ');
4093                         if (e) {
4094                                 path = strndupa(eq, e - eq);
4095                                 weight = e+1;
4096                         } else {
4097                                 log_error("Failed to parse %s value %s.", field, eq);
4098                                 return -EINVAL;
4099                         }
4100
4101                         if (!path_startswith(path, "/dev")) {
4102                                 log_error("%s is not a device file in /dev.", path);
4103                                 return -EINVAL;
4104                         }
4105
4106                         r = safe_atou64(weight, &u);
4107                         if (r < 0) {
4108                                 log_error("Failed to parse %s value %s.", field, weight);
4109                                 return -EINVAL;
4110                         }
4111                         r = sd_bus_message_append(m, "v", "a(st)", path, u);
4112                 }
4113
4114         } else {
4115                 log_error("Unknown assignment %s.", assignment);
4116                 return -EINVAL;
4117         }
4118
4119         if (r < 0)
4120                 return bus_log_create_error(r);
4121
4122         return 0;
4123 }
4124
4125 static int set_property(sd_bus *bus, char **args) {
4126         _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
4127         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4128         _cleanup_free_ char *n = NULL;
4129         char **i;
4130         int r;
4131
4132         r = sd_bus_message_new_method_call(
4133                         bus,
4134                         "org.freedesktop.systemd1",
4135                         "/org/freedesktop/systemd1",
4136                         "org.freedesktop.systemd1.Manager",
4137                         "SetUnitProperties",
4138                         &m);
4139         if (r < 0)
4140                 return bus_log_create_error(r);
4141
4142         n = unit_name_mangle(args[1], MANGLE_NOGLOB);
4143         if (!n)
4144                 return log_oom();
4145
4146         r = sd_bus_message_append(m, "sb", n, arg_runtime);
4147         if (r < 0)
4148                 return bus_log_create_error(r);
4149
4150         r = sd_bus_message_open_container(m, SD_BUS_TYPE_ARRAY, "(sv)");
4151         if (r < 0)
4152                 return bus_log_create_error(r);
4153
4154         STRV_FOREACH(i, args + 2) {
4155                 r = sd_bus_message_open_container(m, SD_BUS_TYPE_STRUCT, "sv");
4156                 if (r < 0)
4157                         return bus_log_create_error(r);
4158
4159                 r = append_assignment(m, *i);
4160                 if (r < 0)
4161                         return r;
4162
4163                 r = sd_bus_message_close_container(m);
4164                 if (r < 0)
4165                         return bus_log_create_error(r);
4166         }
4167
4168         r = sd_bus_message_close_container(m);
4169         if (r < 0)
4170                 return bus_log_create_error(r);
4171
4172         r = sd_bus_call(bus, m, 0, &error, NULL);
4173         if (r < 0) {
4174                 log_error("Failed to set unit properties on %s: %s", n, bus_error_message(&error, r));
4175                 return r;
4176         }
4177
4178         return 0;
4179 }
4180
4181 static int snapshot(sd_bus *bus, char **args) {
4182         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4183         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
4184         _cleanup_free_ char *n = NULL, *id = NULL;
4185         const char *path;
4186         int r;
4187
4188         if (strv_length(args) > 1)
4189                 n = unit_name_mangle_with_suffix(args[1], MANGLE_NOGLOB, ".snapshot");
4190         else
4191                 n = strdup("");
4192         if (!n)
4193                 return log_oom();
4194
4195         r = sd_bus_call_method(
4196                         bus,
4197                         "org.freedesktop.systemd1",
4198                         "/org/freedesktop/systemd1",
4199                         "org.freedesktop.systemd1.Manager",
4200                         "CreateSnapshot",
4201                         &error,
4202                         &reply,
4203                         "sb", n, false);
4204         if (r < 0) {
4205                 log_error("Failed to create snapshot: %s", bus_error_message(&error, r));
4206                 return r;
4207         }
4208
4209         r = sd_bus_message_read(reply, "o", &path);
4210         if (r < 0)
4211                 return bus_log_parse_error(r);
4212
4213         r = sd_bus_get_property_string(
4214                         bus,
4215                         "org.freedesktop.systemd1",
4216                         path,
4217                         "org.freedesktop.systemd1.Unit",
4218                         "Id",
4219                         &error,
4220                         &id);
4221         if (r < 0) {
4222                 log_error("Failed to get ID of snapshot: %s", bus_error_message(&error, r));
4223                 return r;
4224         }
4225
4226         if (!arg_quiet)
4227                 puts(id);
4228
4229         return 0;
4230 }
4231
4232 static int delete_snapshot(sd_bus *bus, char **args) {
4233         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4234         _cleanup_strv_free_ char **names = NULL;
4235         char **name;
4236         int r, q;
4237
4238         assert(args);
4239
4240         r = expand_names(bus, args + 1, ".snapshot", &names);
4241         if (r < 0)
4242                 log_error("Failed to expand names: %s", strerror(-r));
4243
4244         STRV_FOREACH(name, names) {
4245                 q = sd_bus_call_method(
4246                                 bus,
4247                                 "org.freedesktop.systemd1",
4248                                 "/org/freedesktop/systemd1",
4249                                 "org.freedesktop.systemd1.Manager",
4250                                 "RemoveSnapshot",
4251                                 &error,
4252                                 NULL,
4253                                 "s", *name);
4254                 if (q < 0) {
4255                         log_error("Failed to remove snapshot %s: %s",
4256                                   *name, bus_error_message(&error, r));
4257                         if (r == 0)
4258                                 r = q;
4259                 }
4260         }
4261
4262         return r;
4263 }
4264
4265 static int daemon_reload(sd_bus *bus, char **args) {
4266         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4267         const char *method;
4268         int r;
4269
4270         if (arg_action == ACTION_RELOAD)
4271                 method = "Reload";
4272         else if (arg_action == ACTION_REEXEC)
4273                 method = "Reexecute";
4274         else {
4275                 assert(arg_action == ACTION_SYSTEMCTL);
4276
4277                 method =
4278                         streq(args[0], "clear-jobs")    ||
4279                         streq(args[0], "cancel")        ? "ClearJobs" :
4280                         streq(args[0], "daemon-reexec") ? "Reexecute" :
4281                         streq(args[0], "reset-failed")  ? "ResetFailed" :
4282                         streq(args[0], "halt")          ? "Halt" :
4283                         streq(args[0], "poweroff")      ? "PowerOff" :
4284                         streq(args[0], "reboot")        ? "Reboot" :
4285                         streq(args[0], "kexec")         ? "KExec" :
4286                         streq(args[0], "exit")          ? "Exit" :
4287                                     /* "daemon-reload" */ "Reload";
4288         }
4289
4290         r = sd_bus_call_method(
4291                         bus,
4292                         "org.freedesktop.systemd1",
4293                         "/org/freedesktop/systemd1",
4294                         "org.freedesktop.systemd1.Manager",
4295                         method,
4296                         &error,
4297                         NULL,
4298                         NULL);
4299
4300         if (r == -ENOENT && arg_action != ACTION_SYSTEMCTL)
4301                 /* There's always a fallback possible for
4302                  * legacy actions. */
4303                 r = -EADDRNOTAVAIL;
4304         else if ((r == -ETIMEDOUT || r == -ECONNRESET) && streq(method, "Reexecute"))
4305                 /* On reexecution, we expect a disconnect, not a
4306                  * reply */
4307                 r = 0;
4308         else if (r < 0)
4309                 log_error("Failed to execute operation: %s", bus_error_message(&error, r));
4310
4311         return r < 0 ? r : 0;
4312 }
4313
4314 static int reset_failed(sd_bus *bus, char **args) {
4315         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4316         _cleanup_strv_free_ char **names = NULL;
4317         char **name;
4318         int r, q;
4319
4320         if (strv_length(args) <= 1)
4321                 return daemon_reload(bus, args);
4322
4323         r = expand_names(bus, args + 1, NULL, &names);
4324         if (r < 0)
4325                 log_error("Failed to expand names: %s", strerror(-r));
4326
4327         STRV_FOREACH(name, names) {
4328                 q = sd_bus_call_method(
4329                                 bus,
4330                                 "org.freedesktop.systemd1",
4331                                 "/org/freedesktop/systemd1",
4332                                 "org.freedesktop.systemd1.Manager",
4333                                 "ResetFailedUnit",
4334                                 &error,
4335                                 NULL,
4336                                 "s", *name);
4337                 if (q < 0) {
4338                         log_error("Failed to reset failed state of unit %s: %s",
4339                                   *name, bus_error_message(&error, r));
4340                         if (r == 0)
4341                                 r = q;
4342                 }
4343         }
4344
4345         return r;
4346 }
4347
4348 static int show_environment(sd_bus *bus, char **args) {
4349         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4350         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
4351         const char *text;
4352         int r;
4353
4354         pager_open_if_enabled();
4355
4356         r = sd_bus_get_property(
4357                         bus,
4358                         "org.freedesktop.systemd1",
4359                         "/org/freedesktop/systemd1",
4360                         "org.freedesktop.systemd1.Manager",
4361                         "Environment",
4362                         &error,
4363                         &reply,
4364                         "as");
4365         if (r < 0) {
4366                 log_error("Failed to get environment: %s", bus_error_message(&error, r));
4367                 return r;
4368         }
4369
4370         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "s");
4371         if (r < 0)
4372                 return bus_log_parse_error(r);
4373
4374         while ((r = sd_bus_message_read_basic(reply, SD_BUS_TYPE_STRING, &text)) > 0)
4375                 puts(text);
4376         if (r < 0)
4377                 return bus_log_parse_error(r);
4378
4379         r = sd_bus_message_exit_container(reply);
4380         if (r < 0)
4381                 return bus_log_parse_error(r);
4382
4383         return 0;
4384 }
4385
4386 static int switch_root(sd_bus *bus, char **args) {
4387         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4388         _cleanup_free_ char *init = NULL;
4389         const char *root;
4390         unsigned l;
4391         int r;
4392
4393         l = strv_length(args);
4394         if (l < 2 || l > 3) {
4395                 log_error("Wrong number of arguments.");
4396                 return -EINVAL;
4397         }
4398
4399         root = args[1];
4400
4401         if (l >= 3)
4402                 init = strdup(args[2]);
4403         else {
4404                 parse_env_file("/proc/cmdline", WHITESPACE,
4405                                "init", &init,
4406                                NULL);
4407
4408                 if (!init)
4409                         init = strdup("");
4410         }
4411
4412         if (!init)
4413                 return log_oom();
4414
4415         log_debug("switching root - root: %s; init: %s", root, init);
4416
4417         r = sd_bus_call_method(
4418                         bus,
4419                         "org.freedesktop.systemd1",
4420                         "/org/freedesktop/systemd1",
4421                         "org.freedesktop.systemd1.Manager",
4422                         "SwitchRoot",
4423                         &error,
4424                         NULL,
4425                         "ss", root, init);
4426         if (r < 0) {
4427                 log_error("Failed to switch root: %s", bus_error_message(&error, r));
4428                 return r;
4429         }
4430
4431         return 0;
4432 }
4433
4434 static int set_environment(sd_bus *bus, char **args) {
4435         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4436         _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
4437         const char *method;
4438         int r;
4439
4440         assert(bus);
4441         assert(args);
4442
4443         method = streq(args[0], "set-environment")
4444                 ? "SetEnvironment"
4445                 : "UnsetEnvironment";
4446
4447         r = sd_bus_message_new_method_call(
4448                         bus,
4449                         "org.freedesktop.systemd1",
4450                         "/org/freedesktop/systemd1",
4451                         "org.freedesktop.systemd1.Manager",
4452                         method,
4453                         &m);
4454         if (r < 0)
4455                 return bus_log_create_error(r);
4456
4457         r = sd_bus_message_append_strv(m, args + 1);
4458         if (r < 0)
4459                 return bus_log_create_error(r);
4460
4461         r = sd_bus_call(bus, m, 0, &error, NULL);
4462         if (r < 0) {
4463                 log_error("Failed to set environment: %s", bus_error_message(&error, r));
4464                 return r;
4465         }
4466
4467         return 0;
4468 }
4469
4470 static int enable_sysv_units(const char *verb, char **args) {
4471         int r = 0;
4472
4473 #if defined(HAVE_SYSV_COMPAT) && defined(HAVE_CHKCONFIG)
4474         unsigned f = 1, t = 1;
4475         _cleanup_lookup_paths_free_ LookupPaths paths = {};
4476
4477         if (arg_scope != UNIT_FILE_SYSTEM)
4478                 return 0;
4479
4480         if (!streq(verb, "enable") &&
4481             !streq(verb, "disable") &&
4482             !streq(verb, "is-enabled"))
4483                 return 0;
4484
4485         /* Processes all SysV units, and reshuffles the array so that
4486          * afterwards only the native units remain */
4487
4488         r = lookup_paths_init(&paths, SYSTEMD_SYSTEM, false, NULL, NULL, NULL);
4489         if (r < 0)
4490                 return r;
4491
4492         r = 0;
4493         for (f = 0; args[f]; f++) {
4494                 const char *name;
4495                 _cleanup_free_ char *p = NULL, *q = NULL;
4496                 bool found_native = false, found_sysv;
4497                 unsigned c = 1;
4498                 const char *argv[6] = { "/sbin/chkconfig", NULL, NULL, NULL, NULL };
4499                 char **k, *l;
4500                 int j;
4501                 pid_t pid;
4502                 siginfo_t status;
4503
4504                 name = args[f];
4505
4506                 if (!endswith(name, ".service"))
4507                         continue;
4508
4509                 if (path_is_absolute(name))
4510                         continue;
4511
4512                 STRV_FOREACH(k, paths.unit_path) {
4513                         if (!isempty(arg_root))
4514                                 asprintf(&p, "%s/%s/%s", arg_root, *k, name);
4515                         else
4516                                 asprintf(&p, "%s/%s", *k, name);
4517
4518                         if (!p) {
4519                                 r = log_oom();
4520                                 goto finish;
4521                         }
4522
4523                         found_native = access(p, F_OK) >= 0;
4524                         free(p);
4525                         p = NULL;
4526
4527                         if (found_native)
4528                                 break;
4529                 }
4530
4531                 if (found_native)
4532                         continue;
4533
4534                 if (!isempty(arg_root))
4535                         asprintf(&p, "%s/" SYSTEM_SYSVINIT_PATH "/%s", arg_root, name);
4536                 else
4537                         asprintf(&p, SYSTEM_SYSVINIT_PATH "/%s", name);
4538                 if (!p) {
4539                         r = log_oom();
4540                         goto finish;
4541                 }
4542
4543                 p[strlen(p) - sizeof(".service") + 1] = 0;
4544                 found_sysv = access(p, F_OK) >= 0;
4545
4546                 if (!found_sysv)
4547                         continue;
4548
4549                 /* Mark this entry, so that we don't try enabling it as native unit */
4550                 args[f] = (char*) "";
4551
4552                 log_info("%s is not a native service, redirecting to /sbin/chkconfig.", name);
4553
4554                 if (!isempty(arg_root))
4555                         argv[c++] = q = strappend("--root=", arg_root);
4556
4557                 argv[c++] = basename(p);
4558                 argv[c++] =
4559                         streq(verb, "enable") ? "on" :
4560                         streq(verb, "disable") ? "off" : "--level=5";
4561                 argv[c] = NULL;
4562
4563                 l = strv_join((char**)argv, " ");
4564                 if (!l) {
4565                         r = log_oom();
4566                         goto finish;
4567                 }
4568
4569                 log_info("Executing %s", l);
4570                 free(l);
4571
4572                 pid = fork();
4573                 if (pid < 0) {
4574                         log_error("Failed to fork: %m");
4575                         r = -errno;
4576                         goto finish;
4577                 } else if (pid == 0) {
4578                         /* Child */
4579
4580                         execv(argv[0], (char**) argv);
4581                         _exit(EXIT_FAILURE);
4582                 }
4583
4584                 j = wait_for_terminate(pid, &status);
4585                 if (j < 0) {
4586                         log_error("Failed to wait for child: %s", strerror(-r));
4587                         r = j;
4588                         goto finish;
4589                 }
4590
4591                 if (status.si_code == CLD_EXITED) {
4592                         if (streq(verb, "is-enabled")) {
4593                                 if (status.si_status == 0) {
4594                                         if (!arg_quiet)
4595                                                 puts("enabled");
4596                                         r = 1;
4597                                 } else {
4598                                         if (!arg_quiet)
4599                                                 puts("disabled");
4600                                 }
4601
4602                         } else if (status.si_status != 0) {
4603                                 r = -EINVAL;
4604                                 goto finish;
4605                         }
4606                 } else {
4607                         r = -EPROTO;
4608                         goto finish;
4609                 }
4610         }
4611
4612 finish:
4613         /* Drop all SysV units */
4614         for (f = 0, t = 0; args[f]; f++) {
4615
4616                 if (isempty(args[f]))
4617                         continue;
4618
4619                 args[t++] = args[f];
4620         }
4621
4622         args[t] = NULL;
4623
4624 #endif
4625         return r;
4626 }
4627
4628 static int mangle_names(char **original_names, char ***mangled_names) {
4629         char **i, **l, **name;
4630
4631         l = new(char*, strv_length(original_names) + 1);
4632         if (!l)
4633                 return log_oom();
4634
4635         i = l;
4636         STRV_FOREACH(name, original_names) {
4637
4638                 /* When enabling units qualified path names are OK,
4639                  * too, hence allow them explicitly. */
4640
4641                 if (is_path(*name))
4642                         *i = strdup(*name);
4643                 else
4644                         *i = unit_name_mangle(*name, MANGLE_NOGLOB);
4645
4646                 if (!*i) {
4647                         strv_free(l);
4648                         return log_oom();
4649                 }
4650
4651                 i++;
4652         }
4653
4654         *i = NULL;
4655         *mangled_names = l;
4656
4657         return 0;
4658 }
4659
4660 static int enable_unit(sd_bus *bus, char **args) {
4661         _cleanup_strv_free_ char **names = NULL;
4662         const char *verb = args[0];
4663         UnitFileChange *changes = NULL;
4664         unsigned n_changes = 0;
4665         int carries_install_info = -1;
4666         int r;
4667
4668         if (!args[1])
4669                 return 0;
4670
4671         r = mangle_names(args+1, &names);
4672         if (r < 0)
4673                 return r;
4674
4675         r = enable_sysv_units(verb, names);
4676         if (r < 0)
4677                 return r;
4678
4679         if (!bus || avoid_bus()) {
4680                 if (streq(verb, "enable")) {
4681                         r = unit_file_enable(arg_scope, arg_runtime, arg_root, names, arg_force, &changes, &n_changes);
4682                         carries_install_info = r;
4683                 } else if (streq(verb, "disable"))
4684                         r = unit_file_disable(arg_scope, arg_runtime, arg_root, names, &changes, &n_changes);
4685                 else if (streq(verb, "reenable")) {
4686                         r = unit_file_reenable(arg_scope, arg_runtime, arg_root, names, arg_force, &changes, &n_changes);
4687                         carries_install_info = r;
4688                 } else if (streq(verb, "link"))
4689                         r = unit_file_link(arg_scope, arg_runtime, arg_root, names, arg_force, &changes, &n_changes);
4690                 else if (streq(verb, "preset")) {
4691                         r = unit_file_preset(arg_scope, arg_runtime, arg_root, names, arg_force, &changes, &n_changes);
4692                         carries_install_info = r;
4693                 } else if (streq(verb, "mask"))
4694                         r = unit_file_mask(arg_scope, arg_runtime, arg_root, names, arg_force, &changes, &n_changes);
4695                 else if (streq(verb, "unmask"))
4696                         r = unit_file_unmask(arg_scope, arg_runtime, arg_root, names, &changes, &n_changes);
4697                 else
4698                         assert_not_reached("Unknown verb");
4699
4700                 if (r < 0) {
4701                         log_error("Operation failed: %s", strerror(-r));
4702                         goto finish;
4703                 }
4704
4705                 if (!arg_quiet)
4706                         dump_unit_file_changes(changes, n_changes);
4707
4708                 r = 0;
4709         } else {
4710                 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL, *m = NULL;
4711                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4712                 int expect_carries_install_info = false;
4713                 bool send_force = true;
4714                 const char *method;
4715
4716                 if (streq(verb, "enable")) {
4717                         method = "EnableUnitFiles";
4718                         expect_carries_install_info = true;
4719                 } else if (streq(verb, "disable")) {
4720                         method = "DisableUnitFiles";
4721                         send_force = false;
4722                 } else if (streq(verb, "reenable")) {
4723                         method = "ReenableUnitFiles";
4724                         expect_carries_install_info = true;
4725                 } else if (streq(verb, "link"))
4726                         method = "LinkUnitFiles";
4727                 else if (streq(verb, "preset")) {
4728                         method = "PresetUnitFiles";
4729                         expect_carries_install_info = true;
4730                 } else if (streq(verb, "mask"))
4731                         method = "MaskUnitFiles";
4732                 else if (streq(verb, "unmask")) {
4733                         method = "UnmaskUnitFiles";
4734                         send_force = false;
4735                 } else
4736                         assert_not_reached("Unknown verb");
4737
4738                 r = sd_bus_message_new_method_call(
4739                                 bus,
4740                                 "org.freedesktop.systemd1",
4741                                 "/org/freedesktop/systemd1",
4742                                 "org.freedesktop.systemd1.Manager",
4743                                 method,
4744                                 &m);
4745                 if (r < 0)
4746                         return bus_log_create_error(r);
4747
4748                 r = sd_bus_message_append_strv(m, names);
4749                 if (r < 0)
4750                         return bus_log_create_error(r);
4751
4752                 r = sd_bus_message_append(m, "b", arg_runtime);
4753                 if (r < 0)
4754                         return bus_log_create_error(r);
4755
4756                 if (send_force) {
4757                         r = sd_bus_message_append(m, "b", arg_force);
4758                         if (r < 0)
4759                                 return bus_log_create_error(r);
4760                 }
4761
4762                 r = sd_bus_call(bus, m, 0, &error, &reply);
4763                 if (r < 0) {
4764                         log_error("Failed to execute operation: %s", bus_error_message(&error, r));
4765                         return r;
4766                 }
4767
4768                 if (expect_carries_install_info) {
4769                         r = sd_bus_message_read(reply, "b", &carries_install_info);
4770                         if (r < 0)
4771                                 return bus_log_parse_error(r);
4772                 }
4773
4774                 r = deserialize_and_dump_unit_file_changes(reply);
4775                 if (r < 0)
4776                         return r;
4777
4778                 /* Try to reload if enabeld */
4779                 if (!arg_no_reload)
4780                         r = daemon_reload(bus, args);
4781                 else
4782                         r = 0;
4783         }
4784
4785         if (carries_install_info == 0)
4786                 log_warning("The unit files have no [Install] section. They are not meant to be enabled\n"
4787                             "using systemctl.\n"
4788                             "Possible reasons for having this kind of units are:\n"
4789                             "1) A unit may be statically enabled by being symlinked from another unit's\n"
4790                             "   .wants/ or .requires/ directory.\n"
4791                             "2) A unit's purpose may be to act as a helper for some other unit which has\n"
4792                             "   a requirement dependency on it.\n"
4793                             "3) A unit may be started when needed via activation (socket, path, timer,\n"
4794                             "   D-Bus, udev, scripted systemctl call, ...).\n");
4795
4796 finish:
4797         unit_file_changes_free(changes, n_changes);
4798
4799         return r;
4800 }
4801
4802 static int unit_is_enabled(sd_bus *bus, char **args) {
4803
4804         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4805         _cleanup_strv_free_ char **names = NULL;
4806         bool enabled;
4807         char **name;
4808         int r;
4809
4810         r = mangle_names(args+1, &names);
4811         if (r < 0)
4812                 return r;
4813
4814         r = enable_sysv_units(args[0], names);
4815         if (r < 0)
4816                 return r;
4817
4818         enabled = r > 0;
4819
4820         if (!bus || avoid_bus()) {
4821
4822                 STRV_FOREACH(name, names) {
4823                         UnitFileState state;
4824
4825                         state = unit_file_get_state(arg_scope, arg_root, *name);
4826                         if (state < 0) {
4827                                 log_error("Failed to get unit file state for %s: %s", *name, strerror(-state));
4828                                 return state;
4829                         }
4830
4831                         if (state == UNIT_FILE_ENABLED ||
4832                             state == UNIT_FILE_ENABLED_RUNTIME ||
4833                             state == UNIT_FILE_STATIC)
4834                                 enabled = true;
4835
4836                         if (!arg_quiet)
4837                                 puts(unit_file_state_to_string(state));
4838                 }
4839
4840         } else {
4841                 STRV_FOREACH(name, names) {
4842                         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
4843                         const char *s;
4844
4845                         r = sd_bus_call_method(
4846                                         bus,
4847                                         "org.freedesktop.systemd1",
4848                                         "/org/freedesktop/systemd1",
4849                                         "org.freedesktop.systemd1.Manager",
4850                                         "GetUnitFileState",
4851                                         &error,
4852                                         &reply,
4853                                         "s", *name);
4854                         if (r < 0) {
4855                                 log_error("Failed to get unit file state for %s: %s", *name, bus_error_message(&error, r));
4856                                 return r;
4857                         }
4858
4859                         r = sd_bus_message_read(reply, "s", &s);
4860                         if (r < 0)
4861                                 return bus_log_parse_error(r);
4862
4863                         if (streq(s, "enabled") ||
4864                             streq(s, "enabled-runtime") ||
4865                             streq(s, "static"))
4866                                 enabled = true;
4867
4868                         if (!arg_quiet)
4869                                 puts(s);
4870                 }
4871         }
4872
4873         return !enabled;
4874 }
4875
4876 static int systemctl_help(void) {
4877
4878         pager_open_if_enabled();
4879
4880         printf("%s [OPTIONS...] {COMMAND} ...\n\n"
4881                "Query or send control commands to the systemd manager.\n\n"
4882                "  -h --help           Show this help\n"
4883                "     --version        Show package version\n"
4884                "     --system         Connect to system manager\n"
4885                "     --user           Connect to user service manager\n"
4886                "  -H --host=[USER@]HOST\n"
4887                "                      Operate on remote host\n"
4888                "  -M --machine=CONTAINER\n"
4889                "                      Operate on local container\n"
4890                "  -t --type=TYPE      List only units of a particular type\n"
4891                "     --state=STATE    List only units with particular LOAD or SUB or ACTIVE state\n"
4892                "  -p --property=NAME  Show only properties by this name\n"
4893                "  -a --all            Show all loaded units/properties, including dead/empty\n"
4894                "                      ones. To list all units installed on the system, use\n"
4895                "                      the 'list-unit-files' command instead.\n"
4896                "  -l --full           Don't ellipsize unit names on output\n"
4897                "     --reverse        Show reverse dependencies with 'list-dependencies'\n"
4898                "     --job-mode=MODE  Specify how to deal with already queued jobs, when\n"
4899                "                      queueing a new job\n"
4900                "     --show-types     When showing sockets, explicitly show their type\n"
4901                "  -i --ignore-inhibitors\n"
4902                "                      When shutting down or sleeping, ignore inhibitors\n"
4903                "     --kill-who=WHO   Who to send signal to\n"
4904                "  -s --signal=SIGNAL  Which signal to send\n"
4905                "  -q --quiet          Suppress output\n"
4906                "     --no-block       Do not wait until operation finished\n"
4907                "     --no-wall        Don't send wall message before halt/power-off/reboot\n"
4908                "     --no-reload      When enabling/disabling unit files, don't reload daemon\n"
4909                "                      configuration\n"
4910                "     --no-legend      Do not print a legend (column headers and hints)\n"
4911                "     --no-pager       Do not pipe output into a pager\n"
4912                "     --no-ask-password\n"
4913                "                      Do not ask for system passwords\n"
4914                "     --global         Enable/disable unit files globally\n"
4915                "     --runtime        Enable unit files only temporarily until next reboot\n"
4916                "  -f --force          When enabling unit files, override existing symlinks\n"
4917                "                      When shutting down, execute action immediately\n"
4918                "     --root=PATH      Enable unit files in the specified root directory\n"
4919                "  -n --lines=INTEGER  Number of journal entries to show\n"
4920                "  -o --output=STRING  Change journal output mode (short, short-monotonic,\n"
4921                "                      verbose, export, json, json-pretty, json-sse, cat)\n"
4922                "     --plain          Print unit dependencies as a list instead of a tree\n\n"
4923                "Unit Commands:\n"
4924                "  list-units [PATTERN...]         List loaded units\n"
4925                "  list-sockets [PATTERN...]       List loaded sockets ordered by address\n"
4926                "  list-timers [PATTERN...]        List loaded timers ordered by next elapse\n"
4927                "  start NAME...                   Start (activate) one or more units\n"
4928                "  stop NAME...                    Stop (deactivate) one or more units\n"
4929                "  reload NAME...                  Reload one or more units\n"
4930                "  restart NAME...                 Start or restart one or more units\n"
4931                "  try-restart NAME...             Restart one or more units if active\n"
4932                "  reload-or-restart NAME...       Reload one or more units if possible,\n"
4933                "                                  otherwise start or restart\n"
4934                "  reload-or-try-restart NAME...   Reload one or more units if possible,\n"
4935                "                                  otherwise restart if active\n"
4936                "  isolate NAME                    Start one unit and stop all others\n"
4937                "  kill NAME...                    Send signal to processes of a unit\n"
4938                "  is-active NAME...               Check whether units are active\n"
4939                "  is-failed NAME...               Check whether units are failed\n"
4940                "  status [NAME...|PID...]         Show runtime status of one or more units\n"
4941                "  show [NAME...|JOB...]           Show properties of one or more\n"
4942                "                                  units/jobs or the manager\n"
4943                "  cat NAME...                     Show files and drop-ins of one or more units\n"
4944                "  set-property NAME ASSIGNMENT... Sets one or more properties of a unit\n"
4945                "  help NAME...|PID...             Show manual for one or more units\n"
4946                "  reset-failed [NAME...]          Reset failed state for all, one, or more\n"
4947                "                                  units\n"
4948                "  list-dependencies [NAME]        Recursively show units which are required\n"
4949                "                                  or wanted by this unit or by which this\n"
4950                "                                  unit is required or wanted\n\n"
4951                "Unit File Commands:\n"
4952                "  list-unit-files [PATTERN...]    List installed unit files\n"
4953                "  enable NAME...                  Enable one or more unit files\n"
4954                "  disable NAME...                 Disable one or more unit files\n"
4955                "  reenable NAME...                Reenable one or more unit files\n"
4956                "  preset NAME...                  Enable/disable one or more unit files\n"
4957                "                                  based on preset configuration\n"
4958                "  is-enabled NAME...              Check whether unit files are enabled\n\n"
4959                "  mask NAME...                    Mask one or more units\n"
4960                "  unmask NAME...                  Unmask one or more units\n"
4961                "  link PATH...                    Link one or more units files into\n"
4962                "                                  the search path\n"
4963                "  get-default                     Get the name of the default target\n"
4964                "  set-default NAME                Set the default target\n\n"
4965                "Job Commands:\n"
4966                "  list-jobs [PATTERN...]          List jobs\n"
4967                "  cancel [JOB...]                 Cancel all, one, or more jobs\n\n"
4968                "Snapshot Commands:\n"
4969                "  snapshot [NAME]                 Create a snapshot\n"
4970                "  delete NAME...                  Remove one or more snapshots\n\n"
4971                "Environment Commands:\n"
4972                "  show-environment                Dump environment\n"
4973                "  set-environment NAME=VALUE...   Set one or more environment variables\n"
4974                "  unset-environment NAME...       Unset one or more environment variables\n\n"
4975                "Manager Lifecycle Commands:\n"
4976                "  daemon-reload                   Reload systemd manager configuration\n"
4977                "  daemon-reexec                   Reexecute systemd manager\n\n"
4978                "System Commands:\n"
4979                "  default                         Enter system default mode\n"
4980                "  rescue                          Enter system rescue mode\n"
4981                "  emergency                       Enter system emergency mode\n"
4982                "  halt                            Shut down and halt the system\n"
4983                "  poweroff                        Shut down and power-off the system\n"
4984                "  reboot [ARG]                    Shut down and reboot the system\n"
4985                "  kexec                           Shut down and reboot the system with kexec\n"
4986                "  exit                            Request user instance exit\n"
4987                "  switch-root ROOT [INIT]         Change to a different root file system\n"
4988                "  suspend                         Suspend the system\n"
4989                "  hibernate                       Hibernate the system\n"
4990                "  hybrid-sleep                    Hibernate and suspend the system\n",
4991                program_invocation_short_name);
4992
4993         return 0;
4994 }
4995
4996 static int halt_help(void) {
4997
4998         printf("%s [OPTIONS...]%s\n\n"
4999                "%s the system.\n\n"
5000                "     --help      Show this help\n"
5001                "     --halt      Halt the machine\n"
5002                "  -p --poweroff  Switch off the machine\n"
5003                "     --reboot    Reboot the machine\n"
5004                "  -f --force     Force immediate halt/power-off/reboot\n"
5005                "  -w --wtmp-only Don't halt/power-off/reboot, just write wtmp record\n"
5006                "  -d --no-wtmp   Don't write wtmp record\n"
5007                "     --no-wall   Don't send wall message before halt/power-off/reboot\n",
5008                program_invocation_short_name,
5009                arg_action == ACTION_REBOOT   ? " [ARG]" : "",
5010                arg_action == ACTION_REBOOT   ? "Reboot" :
5011                arg_action == ACTION_POWEROFF ? "Power off" :
5012                                                "Halt");
5013
5014         return 0;
5015 }
5016
5017 static int shutdown_help(void) {
5018
5019         printf("%s [OPTIONS...] [TIME] [WALL...]\n\n"
5020                "Shut down the system.\n\n"
5021                "     --help      Show this help\n"
5022                "  -H --halt      Halt the machine\n"
5023                "  -P --poweroff  Power-off the machine\n"
5024                "  -r --reboot    Reboot the machine\n"
5025                "  -h             Equivalent to --poweroff, overridden by --halt\n"
5026                "  -k             Don't halt/power-off/reboot, just send warnings\n"
5027                "     --no-wall   Don't send wall message before halt/power-off/reboot\n"
5028                "  -c             Cancel a pending shutdown\n",
5029                program_invocation_short_name);
5030
5031         return 0;
5032 }
5033
5034 static int telinit_help(void) {
5035
5036         printf("%s [OPTIONS...] {COMMAND}\n\n"
5037                "Send control commands to the init daemon.\n\n"
5038                "     --help      Show this help\n"
5039                "     --no-wall   Don't send wall message before halt/power-off/reboot\n\n"
5040                "Commands:\n"
5041                "  0              Power-off the machine\n"
5042                "  6              Reboot the machine\n"
5043                "  2, 3, 4, 5     Start runlevelX.target unit\n"
5044                "  1, s, S        Enter rescue mode\n"
5045                "  q, Q           Reload init daemon configuration\n"
5046                "  u, U           Reexecute init daemon\n",
5047                program_invocation_short_name);
5048
5049         return 0;
5050 }
5051
5052 static int runlevel_help(void) {
5053
5054         printf("%s [OPTIONS...]\n\n"
5055                "Prints the previous and current runlevel of the init system.\n\n"
5056                "     --help      Show this help\n",
5057                program_invocation_short_name);
5058
5059         return 0;
5060 }
5061
5062 static int help_types(void) {
5063         int i;
5064         const char *t;
5065
5066         puts("Available unit types:");
5067         for (i = 0; i < _UNIT_TYPE_MAX; i++) {
5068                 t = unit_type_to_string(i);
5069                 if (t)
5070                         puts(t);
5071         }
5072
5073         return 0;
5074 }
5075
5076 static int systemctl_parse_argv(int argc, char *argv[]) {
5077
5078         enum {
5079                 ARG_FAIL = 0x100,
5080                 ARG_REVERSE,
5081                 ARG_AFTER,
5082                 ARG_BEFORE,
5083                 ARG_SHOW_TYPES,
5084                 ARG_IRREVERSIBLE,
5085                 ARG_IGNORE_DEPENDENCIES,
5086                 ARG_VERSION,
5087                 ARG_USER,
5088                 ARG_SYSTEM,
5089                 ARG_GLOBAL,
5090                 ARG_NO_BLOCK,
5091                 ARG_NO_LEGEND,
5092                 ARG_NO_PAGER,
5093                 ARG_NO_WALL,
5094                 ARG_ROOT,
5095                 ARG_NO_RELOAD,
5096                 ARG_KILL_WHO,
5097                 ARG_NO_ASK_PASSWORD,
5098                 ARG_FAILED,
5099                 ARG_RUNTIME,
5100                 ARG_FORCE,
5101                 ARG_PLAIN,
5102                 ARG_STATE,
5103                 ARG_JOB_MODE
5104         };
5105
5106         static const struct option options[] = {
5107                 { "help",                no_argument,       NULL, 'h'                     },
5108                 { "version",             no_argument,       NULL, ARG_VERSION             },
5109                 { "type",                required_argument, NULL, 't'                     },
5110                 { "property",            required_argument, NULL, 'p'                     },
5111                 { "all",                 no_argument,       NULL, 'a'                     },
5112                 { "reverse",             no_argument,       NULL, ARG_REVERSE             },
5113                 { "after",               no_argument,       NULL, ARG_AFTER               },
5114                 { "before",              no_argument,       NULL, ARG_BEFORE              },
5115                 { "show-types",          no_argument,       NULL, ARG_SHOW_TYPES          },
5116                 { "failed",              no_argument,       NULL, ARG_FAILED              }, /* compatibility only */
5117                 { "full",                no_argument,       NULL, 'l'                     },
5118                 { "job-mode",            required_argument, NULL, ARG_JOB_MODE            },
5119                 { "fail",                no_argument,       NULL, ARG_FAIL                }, /* compatibility only */
5120                 { "irreversible",        no_argument,       NULL, ARG_IRREVERSIBLE        }, /* compatibility only */
5121                 { "ignore-dependencies", no_argument,       NULL, ARG_IGNORE_DEPENDENCIES }, /* compatibility only */
5122                 { "ignore-inhibitors",   no_argument,       NULL, 'i'                     },
5123                 { "user",                no_argument,       NULL, ARG_USER                },
5124                 { "system",              no_argument,       NULL, ARG_SYSTEM              },
5125                 { "global",              no_argument,       NULL, ARG_GLOBAL              },
5126                 { "no-block",            no_argument,       NULL, ARG_NO_BLOCK            },
5127                 { "no-legend",           no_argument,       NULL, ARG_NO_LEGEND           },
5128                 { "no-pager",            no_argument,       NULL, ARG_NO_PAGER            },
5129                 { "no-wall",             no_argument,       NULL, ARG_NO_WALL             },
5130                 { "quiet",               no_argument,       NULL, 'q'                     },
5131                 { "root",                required_argument, NULL, ARG_ROOT                },
5132                 { "force",               no_argument,       NULL, ARG_FORCE               },
5133                 { "no-reload",           no_argument,       NULL, ARG_NO_RELOAD           },
5134                 { "kill-who",            required_argument, NULL, ARG_KILL_WHO            },
5135                 { "signal",              required_argument, NULL, 's'                     },
5136                 { "no-ask-password",     no_argument,       NULL, ARG_NO_ASK_PASSWORD     },
5137                 { "host",                required_argument, NULL, 'H'                     },
5138                 { "machine",             required_argument, NULL, 'M'                     },
5139                 { "runtime",             no_argument,       NULL, ARG_RUNTIME             },
5140                 { "lines",               required_argument, NULL, 'n'                     },
5141                 { "output",              required_argument, NULL, 'o'                     },
5142                 { "plain",               no_argument,       NULL, ARG_PLAIN               },
5143                 { "state",               required_argument, NULL, ARG_STATE               },
5144                 {}
5145         };
5146
5147         int c;
5148
5149         assert(argc >= 0);
5150         assert(argv);
5151
5152         while ((c = getopt_long(argc, argv, "ht:p:alqfs:H:M:n:o:i", options, NULL)) >= 0) {
5153
5154                 switch (c) {
5155
5156                 case 'h':
5157                         return systemctl_help();
5158
5159                 case ARG_VERSION:
5160                         puts(PACKAGE_STRING);
5161                         puts(SYSTEMD_FEATURES);
5162                         return 0;
5163
5164                 case 't': {
5165                         char *word, *state;
5166                         size_t size;
5167
5168                         FOREACH_WORD_SEPARATOR(word, size, optarg, ",", state) {
5169                                 _cleanup_free_ char *type;
5170
5171                                 type = strndup(word, size);
5172                                 if (!type)
5173                                         return -ENOMEM;
5174
5175                                 if (streq(type, "help")) {
5176                                         help_types();
5177                                         return 0;
5178                                 }
5179
5180                                 if (unit_type_from_string(type) >= 0) {
5181                                         if (strv_push(&arg_types, type))
5182                                                 return log_oom();
5183                                         type = NULL;
5184                                         continue;
5185                                 }
5186
5187                                 /* It's much nicer to use --state= for
5188                                  * load states, but let's support this
5189                                  * in --types= too for compatibility
5190                                  * with old versions */
5191                                 if (unit_load_state_from_string(optarg) >= 0) {
5192                                         if (strv_push(&arg_states, type) < 0)
5193                                                 return log_oom();
5194                                         type = NULL;
5195                                         continue;
5196                                 }
5197
5198                                 log_error("Unknown unit type or load state '%s'.", type);
5199                                 log_info("Use -t help to see a list of allowed values.");
5200                                 return -EINVAL;
5201                         }
5202
5203                         break;
5204                 }
5205
5206                 case 'p': {
5207                         /* Make sure that if the empty property list
5208                            was specified, we won't show any properties. */
5209                         if (isempty(optarg) && !arg_properties) {
5210                                 arg_properties = new0(char*, 1);
5211                                 if (!arg_properties)
5212                                         return log_oom();
5213                         } else {
5214                                 char *word, *state;
5215                                 size_t size;
5216
5217                                 FOREACH_WORD_SEPARATOR(word, size, optarg, ",", state) {
5218                                         char *prop;
5219
5220                                         prop = strndup(word, size);
5221                                         if (!prop)
5222                                                 return log_oom();
5223
5224                                         if (strv_push(&arg_properties, prop) < 0) {
5225                                                 free(prop);
5226                                                 return log_oom();
5227                                         }
5228                                 }
5229                         }
5230
5231                         /* If the user asked for a particular
5232                          * property, show it to him, even if it is
5233                          * empty. */
5234                         arg_all = true;
5235
5236                         break;
5237                 }
5238
5239                 case 'a':
5240                         arg_all = true;
5241                         break;
5242
5243                 case ARG_REVERSE:
5244                         arg_dependency = DEPENDENCY_REVERSE;
5245                         break;
5246
5247                 case ARG_AFTER:
5248                         arg_dependency = DEPENDENCY_AFTER;
5249                         break;
5250
5251                 case ARG_BEFORE:
5252                         arg_dependency = DEPENDENCY_BEFORE;
5253                         break;
5254
5255                 case ARG_SHOW_TYPES:
5256                         arg_show_types = true;
5257                         break;
5258
5259                 case ARG_JOB_MODE:
5260                         arg_job_mode = optarg;
5261                         break;
5262
5263                 case ARG_FAIL:
5264                         arg_job_mode = "fail";
5265                         break;
5266
5267                 case ARG_IRREVERSIBLE:
5268                         arg_job_mode = "replace-irreversibly";
5269                         break;
5270
5271                 case ARG_IGNORE_DEPENDENCIES:
5272                         arg_job_mode = "ignore-dependencies";
5273                         break;
5274
5275                 case ARG_USER:
5276                         arg_scope = UNIT_FILE_USER;
5277                         break;
5278
5279                 case ARG_SYSTEM:
5280                         arg_scope = UNIT_FILE_SYSTEM;
5281                         break;
5282
5283                 case ARG_GLOBAL:
5284                         arg_scope = UNIT_FILE_GLOBAL;
5285                         break;
5286
5287                 case ARG_NO_BLOCK:
5288                         arg_no_block = true;
5289                         break;
5290
5291                 case ARG_NO_LEGEND:
5292                         arg_no_legend = true;
5293                         break;
5294
5295                 case ARG_NO_PAGER:
5296                         arg_no_pager = true;
5297                         break;
5298
5299                 case ARG_NO_WALL:
5300                         arg_no_wall = true;
5301                         break;
5302
5303                 case ARG_ROOT:
5304                         arg_root = optarg;
5305                         break;
5306
5307                 case 'l':
5308                         arg_full = true;
5309                         break;
5310
5311                 case ARG_FAILED:
5312                         if (strv_extend(&arg_states, "failed") < 0)
5313                                 return log_oom();
5314
5315                         break;
5316
5317                 case 'q':
5318                         arg_quiet = true;
5319                         break;
5320
5321                 case ARG_FORCE:
5322                         arg_force ++;
5323                         break;
5324
5325                 case 'f':
5326                         arg_force ++;
5327                         break;
5328
5329                 case ARG_NO_RELOAD:
5330                         arg_no_reload = true;
5331                         break;
5332
5333                 case ARG_KILL_WHO:
5334                         arg_kill_who = optarg;
5335                         break;
5336
5337                 case 's':
5338                         if ((arg_signal = signal_from_string_try_harder(optarg)) < 0) {
5339                                 log_error("Failed to parse signal string %s.", optarg);
5340                                 return -EINVAL;
5341                         }
5342                         break;
5343
5344                 case ARG_NO_ASK_PASSWORD:
5345                         arg_ask_password = false;
5346                         break;
5347
5348                 case 'H':
5349                         arg_transport = BUS_TRANSPORT_REMOTE;
5350                         arg_host = optarg;
5351                         break;
5352
5353                 case 'M':
5354                         arg_transport = BUS_TRANSPORT_CONTAINER;
5355                         arg_host = optarg;
5356                         break;
5357
5358                 case ARG_RUNTIME:
5359                         arg_runtime = true;
5360                         break;
5361
5362                 case 'n':
5363                         if (safe_atou(optarg, &arg_lines) < 0) {
5364                                 log_error("Failed to parse lines '%s'", optarg);
5365                                 return -EINVAL;
5366                         }
5367                         break;
5368
5369                 case 'o':
5370                         arg_output = output_mode_from_string(optarg);
5371                         if (arg_output < 0) {
5372                                 log_error("Unknown output '%s'.", optarg);
5373                                 return -EINVAL;
5374                         }
5375                         break;
5376
5377                 case 'i':
5378                         arg_ignore_inhibitors = true;
5379                         break;
5380
5381                 case ARG_PLAIN:
5382                         arg_plain = true;
5383                         break;
5384
5385                 case ARG_STATE: {
5386                         char *word, *state;
5387                         size_t size;
5388
5389                         FOREACH_WORD_SEPARATOR(word, size, optarg, ",", state) {
5390                                 char *s;
5391
5392                                 s = strndup(word, size);
5393                                 if (!s)
5394                                         return log_oom();
5395
5396                                 if (strv_push(&arg_states, s) < 0) {
5397                                         free(s);
5398                                         return log_oom();
5399                                 }
5400                         }
5401                         break;
5402                 }
5403
5404                 case '?':
5405                         return -EINVAL;
5406
5407                 default:
5408                         assert_not_reached("Unhandled option");
5409                 }
5410         }
5411
5412         if (arg_transport != BUS_TRANSPORT_LOCAL && arg_scope != UNIT_FILE_SYSTEM) {
5413                 log_error("Cannot access user instance remotely.");
5414                 return -EINVAL;
5415         }
5416
5417         return 1;
5418 }
5419
5420 static int halt_parse_argv(int argc, char *argv[]) {
5421
5422         enum {
5423                 ARG_HELP = 0x100,
5424                 ARG_HALT,
5425                 ARG_REBOOT,
5426                 ARG_NO_WALL
5427         };
5428
5429         static const struct option options[] = {
5430                 { "help",      no_argument,       NULL, ARG_HELP    },
5431                 { "halt",      no_argument,       NULL, ARG_HALT    },
5432                 { "poweroff",  no_argument,       NULL, 'p'         },
5433                 { "reboot",    no_argument,       NULL, ARG_REBOOT  },
5434                 { "force",     no_argument,       NULL, 'f'         },
5435                 { "wtmp-only", no_argument,       NULL, 'w'         },
5436                 { "no-wtmp",   no_argument,       NULL, 'd'         },
5437                 { "no-wall",   no_argument,       NULL, ARG_NO_WALL },
5438                 {}
5439         };
5440
5441         int c, r, runlevel;
5442
5443         assert(argc >= 0);
5444         assert(argv);
5445
5446         if (utmp_get_runlevel(&runlevel, NULL) >= 0)
5447                 if (runlevel == '0' || runlevel == '6')
5448                         arg_force = 2;
5449
5450         while ((c = getopt_long(argc, argv, "pfwdnih", options, NULL)) >= 0) {
5451                 switch (c) {
5452
5453                 case ARG_HELP:
5454                         return halt_help();
5455
5456                 case ARG_HALT:
5457                         arg_action = ACTION_HALT;
5458                         break;
5459
5460                 case 'p':
5461                         if (arg_action != ACTION_REBOOT)
5462                                 arg_action = ACTION_POWEROFF;
5463                         break;
5464
5465                 case ARG_REBOOT:
5466                         arg_action = ACTION_REBOOT;
5467                         break;
5468
5469                 case 'f':
5470                         arg_force = 2;
5471                         break;
5472
5473                 case 'w':
5474                         arg_dry = true;
5475                         break;
5476
5477                 case 'd':
5478                         arg_no_wtmp = true;
5479                         break;
5480
5481                 case ARG_NO_WALL:
5482                         arg_no_wall = true;
5483                         break;
5484
5485                 case 'i':
5486                 case 'h':
5487                 case 'n':
5488                         /* Compatibility nops */
5489                         break;
5490
5491                 case '?':
5492                         return -EINVAL;
5493
5494                 default:
5495                         assert_not_reached("Unhandled option");
5496                 }
5497         }
5498
5499         if (arg_action == ACTION_REBOOT && argc == optind + 1) {
5500                 r = write_string_file(REBOOT_PARAM_FILE, argv[optind]);
5501                 if (r < 0) {
5502                         log_error("Failed to write reboot param to "
5503                                   REBOOT_PARAM_FILE": %s", strerror(-r));
5504                         return r;
5505                 }
5506         } else if (optind < argc) {
5507                 log_error("Too many arguments.");
5508                 return -EINVAL;
5509         }
5510
5511         return 1;
5512 }
5513
5514 static int parse_time_spec(const char *t, usec_t *_u) {
5515         assert(t);
5516         assert(_u);
5517
5518         if (streq(t, "now"))
5519                 *_u = 0;
5520         else if (!strchr(t, ':')) {
5521                 uint64_t u;
5522
5523                 if (safe_atou64(t, &u) < 0)
5524                         return -EINVAL;
5525
5526                 *_u = now(CLOCK_REALTIME) + USEC_PER_MINUTE * u;
5527         } else {
5528                 char *e = NULL;
5529                 long hour, minute;
5530                 struct tm tm = {};
5531                 time_t s;
5532                 usec_t n;
5533
5534                 errno = 0;
5535                 hour = strtol(t, &e, 10);
5536                 if (errno > 0 || *e != ':' || hour < 0 || hour > 23)
5537                         return -EINVAL;
5538
5539                 minute = strtol(e+1, &e, 10);
5540                 if (errno > 0 || *e != 0 || minute < 0 || minute > 59)
5541                         return -EINVAL;
5542
5543                 n = now(CLOCK_REALTIME);
5544                 s = (time_t) (n / USEC_PER_SEC);
5545
5546                 assert_se(localtime_r(&s, &tm));
5547
5548                 tm.tm_hour = (int) hour;
5549                 tm.tm_min = (int) minute;
5550                 tm.tm_sec = 0;
5551
5552                 assert_se(s = mktime(&tm));
5553
5554                 *_u = (usec_t) s * USEC_PER_SEC;
5555
5556                 while (*_u <= n)
5557                         *_u += USEC_PER_DAY;
5558         }
5559
5560         return 0;
5561 }
5562
5563 static int shutdown_parse_argv(int argc, char *argv[]) {
5564
5565         enum {
5566                 ARG_HELP = 0x100,
5567                 ARG_NO_WALL
5568         };
5569
5570         static const struct option options[] = {
5571                 { "help",      no_argument,       NULL, ARG_HELP    },
5572                 { "halt",      no_argument,       NULL, 'H'         },
5573                 { "poweroff",  no_argument,       NULL, 'P'         },
5574                 { "reboot",    no_argument,       NULL, 'r'         },
5575                 { "kexec",     no_argument,       NULL, 'K'         }, /* not documented extension */
5576                 { "no-wall",   no_argument,       NULL, ARG_NO_WALL },
5577                 {}
5578         };
5579
5580         int c, r;
5581
5582         assert(argc >= 0);
5583         assert(argv);
5584
5585         while ((c = getopt_long(argc, argv, "HPrhkt:afFc", options, NULL)) >= 0) {
5586                 switch (c) {
5587
5588                 case ARG_HELP:
5589                         return shutdown_help();
5590
5591                 case 'H':
5592                         arg_action = ACTION_HALT;
5593                         break;
5594
5595                 case 'P':
5596                         arg_action = ACTION_POWEROFF;
5597                         break;
5598
5599                 case 'r':
5600                         if (kexec_loaded())
5601                                 arg_action = ACTION_KEXEC;
5602                         else
5603                                 arg_action = ACTION_REBOOT;
5604                         break;
5605
5606                 case 'K':
5607                         arg_action = ACTION_KEXEC;
5608                         break;
5609
5610                 case 'h':
5611                         if (arg_action != ACTION_HALT)
5612                                 arg_action = ACTION_POWEROFF;
5613                         break;
5614
5615                 case 'k':
5616                         arg_dry = true;
5617                         break;
5618
5619                 case ARG_NO_WALL:
5620                         arg_no_wall = true;
5621                         break;
5622
5623                 case 't':
5624                 case 'a':
5625                         /* Compatibility nops */
5626                         break;
5627
5628                 case 'c':
5629                         arg_action = ACTION_CANCEL_SHUTDOWN;
5630                         break;
5631
5632                 case '?':
5633                         return -EINVAL;
5634
5635                 default:
5636                         assert_not_reached("Unhandled option");
5637                 }
5638         }
5639
5640         if (argc > optind && arg_action != ACTION_CANCEL_SHUTDOWN) {
5641                 r = parse_time_spec(argv[optind], &arg_when);
5642                 if (r < 0) {
5643                         log_error("Failed to parse time specification: %s", argv[optind]);
5644                         return r;
5645                 }
5646         } else
5647                 arg_when = now(CLOCK_REALTIME) + USEC_PER_MINUTE;
5648
5649         if (argc > optind && arg_action == ACTION_CANCEL_SHUTDOWN)
5650                 /* No time argument for shutdown cancel */
5651                 arg_wall = argv + optind;
5652         else if (argc > optind + 1)
5653                 /* We skip the time argument */
5654                 arg_wall = argv + optind + 1;
5655
5656         optind = argc;
5657
5658         return 1;
5659 }
5660
5661 static int telinit_parse_argv(int argc, char *argv[]) {
5662
5663         enum {
5664                 ARG_HELP = 0x100,
5665                 ARG_NO_WALL
5666         };
5667
5668         static const struct option options[] = {
5669                 { "help",      no_argument,       NULL, ARG_HELP    },
5670                 { "no-wall",   no_argument,       NULL, ARG_NO_WALL },
5671                 {}
5672         };
5673
5674         static const struct {
5675                 char from;
5676                 enum action to;
5677         } table[] = {
5678                 { '0', ACTION_POWEROFF },
5679                 { '6', ACTION_REBOOT },
5680                 { '1', ACTION_RESCUE },
5681                 { '2', ACTION_RUNLEVEL2 },
5682                 { '3', ACTION_RUNLEVEL3 },
5683                 { '4', ACTION_RUNLEVEL4 },
5684                 { '5', ACTION_RUNLEVEL5 },
5685                 { 's', ACTION_RESCUE },
5686                 { 'S', ACTION_RESCUE },
5687                 { 'q', ACTION_RELOAD },
5688                 { 'Q', ACTION_RELOAD },
5689                 { 'u', ACTION_REEXEC },
5690                 { 'U', ACTION_REEXEC }
5691         };
5692
5693         unsigned i;
5694         int c;
5695
5696         assert(argc >= 0);
5697         assert(argv);
5698
5699         while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) {
5700                 switch (c) {
5701
5702                 case ARG_HELP:
5703                         return telinit_help();
5704
5705                 case ARG_NO_WALL:
5706                         arg_no_wall = true;
5707                         break;
5708
5709                 case '?':
5710                         return -EINVAL;
5711
5712                 default:
5713                         assert_not_reached("Unhandled option");
5714                 }
5715         }
5716
5717         if (optind >= argc) {
5718                 telinit_help();
5719                 return -EINVAL;
5720         }
5721
5722         if (optind + 1 < argc) {
5723                 log_error("Too many arguments.");
5724                 return -EINVAL;
5725         }
5726
5727         if (strlen(argv[optind]) != 1) {
5728                 log_error("Expected single character argument.");
5729                 return -EINVAL;
5730         }
5731
5732         for (i = 0; i < ELEMENTSOF(table); i++)
5733                 if (table[i].from == argv[optind][0])
5734                         break;
5735
5736         if (i >= ELEMENTSOF(table)) {
5737                 log_error("Unknown command '%s'.", argv[optind]);
5738                 return -EINVAL;
5739         }
5740
5741         arg_action = table[i].to;
5742
5743         optind ++;
5744
5745         return 1;
5746 }
5747
5748 static int runlevel_parse_argv(int argc, char *argv[]) {
5749
5750         enum {
5751                 ARG_HELP = 0x100,
5752         };
5753
5754         static const struct option options[] = {
5755                 { "help",      no_argument,       NULL, ARG_HELP    },
5756                 {}
5757         };
5758
5759         int c;
5760
5761         assert(argc >= 0);
5762         assert(argv);
5763
5764         while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) {
5765                 switch (c) {
5766
5767                 case ARG_HELP:
5768                         return runlevel_help();
5769                         return 0;
5770
5771                 case '?':
5772                         return -EINVAL;
5773
5774                 default:
5775                         assert_not_reached("Unhandled option");
5776                 }
5777         }
5778
5779         if (optind < argc) {
5780                 log_error("Too many arguments.");
5781                 return -EINVAL;
5782         }
5783
5784         return 1;
5785 }
5786
5787 static int parse_argv(int argc, char *argv[]) {
5788         assert(argc >= 0);
5789         assert(argv);
5790
5791         if (program_invocation_short_name) {
5792
5793                 if (strstr(program_invocation_short_name, "halt")) {
5794                         arg_action = ACTION_HALT;
5795                         return halt_parse_argv(argc, argv);
5796                 } else if (strstr(program_invocation_short_name, "poweroff")) {
5797                         arg_action = ACTION_POWEROFF;
5798                         return halt_parse_argv(argc, argv);
5799                 } else if (strstr(program_invocation_short_name, "reboot")) {
5800                         if (kexec_loaded())
5801                                 arg_action = ACTION_KEXEC;
5802                         else
5803                                 arg_action = ACTION_REBOOT;
5804                         return halt_parse_argv(argc, argv);
5805                 } else if (strstr(program_invocation_short_name, "shutdown")) {
5806                         arg_action = ACTION_POWEROFF;
5807                         return shutdown_parse_argv(argc, argv);
5808                 } else if (strstr(program_invocation_short_name, "init")) {
5809
5810                         if (sd_booted() > 0) {
5811                                 arg_action = _ACTION_INVALID;
5812                                 return telinit_parse_argv(argc, argv);
5813                         } else {
5814                                 /* Hmm, so some other init system is
5815                                  * running, we need to forward this
5816                                  * request to it. For now we simply
5817                                  * guess that it is Upstart. */
5818
5819                                 execv(TELINIT, argv);
5820
5821                                 log_error("Couldn't find an alternative telinit implementation to spawn.");
5822                                 return -EIO;
5823                         }
5824
5825                 } else if (strstr(program_invocation_short_name, "runlevel")) {
5826                         arg_action = ACTION_RUNLEVEL;
5827                         return runlevel_parse_argv(argc, argv);
5828                 }
5829         }
5830
5831         arg_action = ACTION_SYSTEMCTL;
5832         return systemctl_parse_argv(argc, argv);
5833 }
5834
5835 _pure_ static int action_to_runlevel(void) {
5836
5837         static const char table[_ACTION_MAX] = {
5838                 [ACTION_HALT] =      '0',
5839                 [ACTION_POWEROFF] =  '0',
5840                 [ACTION_REBOOT] =    '6',
5841                 [ACTION_RUNLEVEL2] = '2',
5842                 [ACTION_RUNLEVEL3] = '3',
5843                 [ACTION_RUNLEVEL4] = '4',
5844                 [ACTION_RUNLEVEL5] = '5',
5845                 [ACTION_RESCUE] =    '1'
5846         };
5847
5848         assert(arg_action < _ACTION_MAX);
5849
5850         return table[arg_action];
5851 }
5852
5853 static int talk_initctl(void) {
5854
5855         struct init_request request = {
5856                 .magic = INIT_MAGIC,
5857                 .sleeptime  = 0,
5858                 .cmd = INIT_CMD_RUNLVL
5859         };
5860
5861         _cleanup_close_ int fd = -1;
5862         char rl;
5863         int r;
5864
5865         rl = action_to_runlevel();
5866         if (!rl)
5867                 return 0;
5868
5869         request.runlevel = rl;
5870
5871         fd = open(INIT_FIFO, O_WRONLY|O_NDELAY|O_CLOEXEC|O_NOCTTY);
5872         if (fd < 0) {
5873                 if (errno == ENOENT)
5874                         return 0;
5875
5876                 log_error("Failed to open "INIT_FIFO": %m");
5877                 return -errno;
5878         }
5879
5880         errno = 0;
5881         r = loop_write(fd, &request, sizeof(request), false) != sizeof(request);
5882         if (r) {
5883                 log_error("Failed to write to "INIT_FIFO": %m");
5884                 return errno > 0 ? -errno : -EIO;
5885         }
5886
5887         return 1;
5888 }
5889
5890 static int systemctl_main(sd_bus *bus, int argc, char *argv[], int bus_error) {
5891
5892         static const struct {
5893                 const char* verb;
5894                 const enum {
5895                         MORE,
5896                         LESS,
5897                         EQUAL
5898                 } argc_cmp;
5899                 const int argc;
5900                 int (* const dispatch)(sd_bus *bus, char **args);
5901                 const enum {
5902                         NOBUS = 1,
5903                         FORCE,
5904                 } bus;
5905         } verbs[] = {
5906                 { "list-units",            MORE,  0, list_units        },
5907                 { "list-unit-files",       MORE,  1, list_unit_files,  NOBUS },
5908                 { "list-sockets",          MORE,  1, list_sockets      },
5909                 { "list-timers",           MORE,  1, list_timers       },
5910                 { "list-jobs",             MORE,  1, list_jobs         },
5911                 { "clear-jobs",            EQUAL, 1, daemon_reload     },
5912                 { "cancel",                MORE,  2, cancel_job        },
5913                 { "start",                 MORE,  2, start_unit        },
5914                 { "stop",                  MORE,  2, start_unit        },
5915                 { "condstop",              MORE,  2, start_unit        }, /* For compatibility with ALTLinux */
5916                 { "reload",                MORE,  2, start_unit        },
5917                 { "restart",               MORE,  2, start_unit        },
5918                 { "try-restart",           MORE,  2, start_unit        },
5919                 { "reload-or-restart",     MORE,  2, start_unit        },
5920                 { "reload-or-try-restart", MORE,  2, start_unit        },
5921                 { "force-reload",          MORE,  2, start_unit        }, /* For compatibility with SysV */
5922                 { "condreload",            MORE,  2, start_unit        }, /* For compatibility with ALTLinux */
5923                 { "condrestart",           MORE,  2, start_unit        }, /* For compatibility with RH */
5924                 { "isolate",               EQUAL, 2, start_unit        },
5925                 { "kill",                  MORE,  2, kill_unit         },
5926                 { "is-active",             MORE,  2, check_unit_active },
5927                 { "check",                 MORE,  2, check_unit_active },
5928                 { "is-failed",             MORE,  2, check_unit_failed },
5929                 { "show",                  MORE,  1, show              },
5930                 { "cat",                   MORE,  2, cat               },
5931                 { "status",                MORE,  1, show              },
5932                 { "help",                  MORE,  2, show              },
5933                 { "snapshot",              LESS,  2, snapshot          },
5934                 { "delete",                MORE,  2, delete_snapshot   },
5935                 { "daemon-reload",         EQUAL, 1, daemon_reload     },
5936                 { "daemon-reexec",         EQUAL, 1, daemon_reload     },
5937                 { "show-environment",      EQUAL, 1, show_environment  },
5938                 { "set-environment",       MORE,  2, set_environment   },
5939                 { "unset-environment",     MORE,  2, set_environment   },
5940                 { "halt",                  EQUAL, 1, start_special,    FORCE },
5941                 { "poweroff",              EQUAL, 1, start_special,    FORCE },
5942                 { "reboot",                EQUAL, 1, start_special,    FORCE },
5943                 { "kexec",                 EQUAL, 1, start_special     },
5944                 { "suspend",               EQUAL, 1, start_special     },
5945                 { "hibernate",             EQUAL, 1, start_special     },
5946                 { "hybrid-sleep",          EQUAL, 1, start_special     },
5947                 { "default",               EQUAL, 1, start_special     },
5948                 { "rescue",                EQUAL, 1, start_special     },
5949                 { "emergency",             EQUAL, 1, start_special     },
5950                 { "exit",                  EQUAL, 1, start_special     },
5951                 { "reset-failed",          MORE,  1, reset_failed      },
5952                 { "enable",                MORE,  2, enable_unit,      NOBUS },
5953                 { "disable",               MORE,  2, enable_unit,      NOBUS },
5954                 { "is-enabled",            MORE,  2, unit_is_enabled,  NOBUS },
5955                 { "reenable",              MORE,  2, enable_unit,      NOBUS },
5956                 { "preset",                MORE,  2, enable_unit,      NOBUS },
5957                 { "mask",                  MORE,  2, enable_unit,      NOBUS },
5958                 { "unmask",                MORE,  2, enable_unit,      NOBUS },
5959                 { "link",                  MORE,  2, enable_unit,      NOBUS },
5960                 { "switch-root",           MORE,  2, switch_root       },
5961                 { "list-dependencies",     LESS,  2, list_dependencies },
5962                 { "set-default",           EQUAL, 2, set_default,      NOBUS },
5963                 { "get-default",           EQUAL, 1, get_default,      NOBUS },
5964                 { "set-property",          MORE,  3, set_property      },
5965                 {}
5966         }, *verb = verbs;
5967
5968         int left;
5969
5970         assert(argc >= 0);
5971         assert(argv);
5972
5973         left = argc - optind;
5974
5975         /* Special rule: no arguments (left == 0) means "list-units" */
5976         if (left > 0) {
5977                 if (streq(argv[optind], "help") && !argv[optind+1]) {
5978                         log_error("This command expects one or more "
5979                                   "unit names. Did you mean --help?");
5980                         return -EINVAL;
5981                 }
5982
5983                 for (; verb->verb; verb++)
5984                         if (streq(argv[optind], verb->verb))
5985                                 goto found;
5986
5987                 log_error("Unknown operation '%s'.", argv[optind]);
5988                 return -EINVAL;
5989         }
5990 found:
5991
5992         switch (verb->argc_cmp) {
5993
5994         case EQUAL:
5995                 if (left != verb->argc) {
5996                         log_error("Invalid number of arguments.");
5997                         return -EINVAL;
5998                 }
5999
6000                 break;
6001
6002         case MORE:
6003                 if (left < verb->argc) {
6004                         log_error("Too few arguments.");
6005                         return -EINVAL;
6006                 }
6007
6008                 break;
6009
6010         case LESS:
6011                 if (left > verb->argc) {
6012                         log_error("Too many arguments.");
6013                         return -EINVAL;
6014                 }
6015
6016                 break;
6017
6018         default:
6019                 assert_not_reached("Unknown comparison operator.");
6020         }
6021
6022         /* Require a bus connection for all operations but
6023          * enable/disable */
6024         if (verb->bus == NOBUS) {
6025                 if (!bus && !avoid_bus()) {
6026                         log_error("Failed to get D-Bus connection: %s", strerror(-bus_error));
6027                         return -EIO;
6028                 }
6029
6030         } else {
6031                 if (running_in_chroot() > 0) {
6032                         log_info("Running in chroot, ignoring request.");
6033                         return 0;
6034                 }
6035
6036                 if ((verb->bus != FORCE || arg_force <= 0) && !bus) {
6037                         log_error("Failed to get D-Bus connection: %s", strerror(-bus_error));
6038                         return -EIO;
6039                 }
6040         }
6041
6042         return verb->dispatch(bus, argv + optind);
6043 }
6044
6045 static int send_shutdownd(usec_t t, char mode, bool dry_run, bool warn, const char *message) {
6046
6047         struct sd_shutdown_command c = {
6048                 .usec = t,
6049                 .mode = mode,
6050                 .dry_run = dry_run,
6051                 .warn_wall = warn,
6052         };
6053
6054         union sockaddr_union sockaddr = {
6055                 .un.sun_family = AF_UNIX,
6056                 .un.sun_path = "/run/systemd/shutdownd",
6057         };
6058
6059         struct iovec iovec[2] = {{
6060                  .iov_base = (char*) &c,
6061                  .iov_len = offsetof(struct sd_shutdown_command, wall_message),
6062         }};
6063
6064         struct msghdr msghdr = {
6065                 .msg_name = &sockaddr,
6066                 .msg_namelen = offsetof(struct sockaddr_un, sun_path)
6067                                + sizeof("/run/systemd/shutdownd") - 1,
6068                 .msg_iov = iovec,
6069                 .msg_iovlen = 1,
6070         };
6071
6072         _cleanup_close_ int fd;
6073
6074         fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0);
6075         if (fd < 0)
6076                 return -errno;
6077
6078         if (!isempty(message)) {
6079                 iovec[1].iov_base = (char*) message;
6080                 iovec[1].iov_len = strlen(message);
6081                 msghdr.msg_iovlen++;
6082         }
6083
6084         if (sendmsg(fd, &msghdr, MSG_NOSIGNAL) < 0)
6085                 return -errno;
6086
6087         return 0;
6088 }
6089
6090 static int reload_with_fallback(sd_bus *bus) {
6091
6092         if (bus) {
6093                 /* First, try systemd via D-Bus. */
6094                 if (daemon_reload(bus, NULL) >= 0)
6095                         return 0;
6096         }
6097
6098         /* Nothing else worked, so let's try signals */
6099         assert(arg_action == ACTION_RELOAD || arg_action == ACTION_REEXEC);
6100
6101         if (kill(1, arg_action == ACTION_RELOAD ? SIGHUP : SIGTERM) < 0) {
6102                 log_error("kill() failed: %m");
6103                 return -errno;
6104         }
6105
6106         return 0;
6107 }
6108
6109 static int start_with_fallback(sd_bus *bus) {
6110
6111         if (bus) {
6112                 /* First, try systemd via D-Bus. */
6113                 if (start_unit(bus, NULL) >= 0)
6114                         goto done;
6115         }
6116
6117         /* Nothing else worked, so let's try
6118          * /dev/initctl */
6119         if (talk_initctl() > 0)
6120                 goto done;
6121
6122         log_error("Failed to talk to init daemon.");
6123         return -EIO;
6124
6125 done:
6126         warn_wall(arg_action);
6127         return 0;
6128 }
6129
6130 static int halt_now(enum action a) {
6131
6132 /* Make sure C-A-D is handled by the kernel from this
6133          * point on... */
6134         reboot(RB_ENABLE_CAD);
6135
6136         switch (a) {
6137
6138         case ACTION_HALT:
6139                 log_info("Halting.");
6140                 reboot(RB_HALT_SYSTEM);
6141                 return -errno;
6142
6143         case ACTION_POWEROFF:
6144                 log_info("Powering off.");
6145                 reboot(RB_POWER_OFF);
6146                 return -errno;
6147
6148         case ACTION_REBOOT: {
6149                 _cleanup_free_ char *param = NULL;
6150
6151                 if (read_one_line_file(REBOOT_PARAM_FILE, &param) >= 0) {
6152                         log_info("Rebooting with argument '%s'.", param);
6153                         syscall(SYS_reboot, LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2,
6154                                 LINUX_REBOOT_CMD_RESTART2, param);
6155                 }
6156
6157                 log_info("Rebooting.");
6158                 reboot(RB_AUTOBOOT);
6159                 return -errno;
6160         }
6161
6162         default:
6163                 assert_not_reached("Unknown action.");
6164         }
6165 }
6166
6167 static int halt_main(sd_bus *bus) {
6168         int r;
6169
6170         r = check_inhibitors(bus, arg_action);
6171         if (r < 0)
6172                 return r;
6173
6174         if (geteuid() != 0) {
6175                 /* Try logind if we are a normal user and no special
6176                  * mode applies. Maybe PolicyKit allows us to shutdown
6177                  * the machine. */
6178
6179                 if (arg_when <= 0 &&
6180                     !arg_dry &&
6181                     arg_force <= 0 &&
6182                     (arg_action == ACTION_POWEROFF ||
6183                      arg_action == ACTION_REBOOT)) {
6184                         r = reboot_with_logind(bus, arg_action);
6185                         if (r >= 0)
6186                                 return r;
6187                 }
6188
6189                 log_error("Must be root.");
6190                 return -EPERM;
6191         }
6192
6193         if (arg_when > 0) {
6194                 _cleanup_free_ char *m;
6195
6196                 m = strv_join(arg_wall, " ");
6197                 if (!m)
6198                         return log_oom();
6199
6200                 r = send_shutdownd(arg_when,
6201                                    arg_action == ACTION_HALT     ? 'H' :
6202                                    arg_action == ACTION_POWEROFF ? 'P' :
6203                                    arg_action == ACTION_KEXEC    ? 'K' :
6204                                                                    'r',
6205                                    arg_dry,
6206                                    !arg_no_wall,
6207                                    m);
6208
6209                 if (r < 0)
6210                         log_warning("Failed to talk to shutdownd, proceeding with immediate shutdown: %s", strerror(-r));
6211                 else {
6212                         char date[FORMAT_TIMESTAMP_MAX];
6213
6214                         log_info("Shutdown scheduled for %s, use 'shutdown -c' to cancel.",
6215                                  format_timestamp(date, sizeof(date), arg_when));
6216                         return 0;
6217                 }
6218         }
6219
6220         if (!arg_dry && !arg_force)
6221                 return start_with_fallback(bus);
6222
6223         if (!arg_no_wtmp) {
6224                 if (sd_booted() > 0)
6225                         log_debug("Not writing utmp record, assuming that systemd-update-utmp is used.");
6226                 else {
6227                         r = utmp_put_shutdown();
6228                         if (r < 0)
6229                                 log_warning("Failed to write utmp record: %s", strerror(-r));
6230                 }
6231         }
6232
6233         if (arg_dry)
6234                 return 0;
6235
6236         r = halt_now(arg_action);
6237         log_error("Failed to reboot: %s", strerror(-r));
6238
6239         return r;
6240 }
6241
6242 static int runlevel_main(void) {
6243         int r, runlevel, previous;
6244
6245         r = utmp_get_runlevel(&runlevel, &previous);
6246         if (r < 0) {
6247                 puts("unknown");
6248                 return r;
6249         }
6250
6251         printf("%c %c\n",
6252                previous <= 0 ? 'N' : previous,
6253                runlevel <= 0 ? 'N' : runlevel);
6254
6255         return 0;
6256 }
6257
6258 int main(int argc, char*argv[]) {
6259         _cleanup_bus_unref_ sd_bus *bus = NULL;
6260         int r;
6261
6262         setlocale(LC_ALL, "");
6263         log_parse_environment();
6264         log_open();
6265
6266         /* Explicitly not on_tty() to avoid setting cached value.
6267          * This becomes relevant for piping output which might be
6268          * ellipsized. */
6269         original_stdout_is_tty = isatty(STDOUT_FILENO);
6270
6271         r = parse_argv(argc, argv);
6272         if (r <= 0)
6273                 goto finish;
6274
6275         /* /sbin/runlevel doesn't need to communicate via D-Bus, so
6276          * let's shortcut this */
6277         if (arg_action == ACTION_RUNLEVEL) {
6278                 r = runlevel_main();
6279                 goto finish;
6280         }
6281
6282         if (running_in_chroot() > 0 && arg_action != ACTION_SYSTEMCTL) {
6283                 log_info("Running in chroot, ignoring request.");
6284                 r = 0;
6285                 goto finish;
6286         }
6287
6288         if (!avoid_bus())
6289                 r = bus_open_transport_systemd(arg_transport, arg_host, arg_scope != UNIT_FILE_SYSTEM, &bus);
6290
6291         /* systemctl_main() will print an error message for the bus
6292          * connection, but only if it needs to */
6293
6294         switch (arg_action) {
6295
6296         case ACTION_SYSTEMCTL:
6297                 r = systemctl_main(bus, argc, argv, r);
6298                 break;
6299
6300         case ACTION_HALT:
6301         case ACTION_POWEROFF:
6302         case ACTION_REBOOT:
6303         case ACTION_KEXEC:
6304                 r = halt_main(bus);
6305                 break;
6306
6307         case ACTION_RUNLEVEL2:
6308         case ACTION_RUNLEVEL3:
6309         case ACTION_RUNLEVEL4:
6310         case ACTION_RUNLEVEL5:
6311         case ACTION_RESCUE:
6312         case ACTION_EMERGENCY:
6313         case ACTION_DEFAULT:
6314                 r = start_with_fallback(bus);
6315                 break;
6316
6317         case ACTION_RELOAD:
6318         case ACTION_REEXEC:
6319                 r = reload_with_fallback(bus);
6320                 break;
6321
6322         case ACTION_CANCEL_SHUTDOWN: {
6323                 _cleanup_free_ char *m = NULL;
6324
6325                 if (arg_wall) {
6326                         m = strv_join(arg_wall, " ");
6327                         if (!m) {
6328                                 r = log_oom();
6329                                 goto finish;
6330                         }
6331                 }
6332
6333                 r = send_shutdownd(arg_when, SD_SHUTDOWN_NONE, false, !arg_no_wall, m);
6334                 if (r < 0)
6335                         log_warning("Failed to talk to shutdownd, shutdown hasn't been cancelled: %s", strerror(-r));
6336                 break;
6337         }
6338
6339         case ACTION_RUNLEVEL:
6340         case _ACTION_INVALID:
6341         default:
6342                 assert_not_reached("Unknown action");
6343         }
6344
6345 finish:
6346         pager_close();
6347         ask_password_agent_close();
6348         polkit_agent_close();
6349
6350         strv_free(arg_types);
6351         strv_free(arg_states);
6352         strv_free(arg_properties);
6353
6354         return r < 0 ? EXIT_FAILURE : r;
6355 }