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 "build.h"
  62 #include "unit-name.h"
  63 #include "pager.h"
  64 #include "spawn-ask-password-agent.h"
  65 #include "spawn-polkit-agent.h"
  66 #include "install.h"
  67 #include "logs-show.h"
  68 #include "socket-util.h"
  69 #include "fileio.h"
  70 #include "env-util.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 enum dependency {
  81         DEPENDENCY_FORWARD,
  82         DEPENDENCY_REVERSE,
  83         DEPENDENCY_AFTER,
  84         DEPENDENCY_BEFORE,
  85         _DEPENDENCY_MAX
  86 } arg_dependency = DEPENDENCY_FORWARD;
  87 static const char *arg_job_mode = "replace";
  88 static UnitFileScope arg_scope = UNIT_FILE_SYSTEM;
  89 static bool arg_no_block = false;
  90 static bool arg_no_legend = false;
  91 static bool arg_no_pager = false;
  92 static bool arg_no_wtmp = false;
  93 static bool arg_no_wall = false;
  94 static bool arg_no_reload = false;
  95 static bool arg_show_types = false;
  96 static bool arg_ignore_inhibitors = false;
  97 static bool arg_dry = false;
  98 static bool arg_quiet = false;
  99 static bool arg_full = false;
 100 static bool arg_recursive = false;
 101 static int arg_force = 0;
 102 static bool arg_ask_password = true;
 103 static bool arg_runtime = false;
 104 static UnitFilePresetMode arg_preset_mode = UNIT_FILE_PRESET_FULL;
 105 static char **arg_wall = NULL;
 106 static const char *arg_kill_who = NULL;
 107 static int arg_signal = SIGTERM;
 108 static const char *arg_root = NULL;
 109 static usec_t arg_when = 0;
 110 static enum action {
 111         _ACTION_INVALID,
 112         ACTION_SYSTEMCTL,
 113         ACTION_HALT,
 114         ACTION_POWEROFF,
 115         ACTION_REBOOT,
 116         ACTION_KEXEC,
 117         ACTION_EXIT,
 118         ACTION_SUSPEND,
 119         ACTION_HIBERNATE,
 120         ACTION_HYBRID_SLEEP,
 121         ACTION_RUNLEVEL2,
 122         ACTION_RUNLEVEL3,
 123         ACTION_RUNLEVEL4,
 124         ACTION_RUNLEVEL5,
 125         ACTION_RESCUE,
 126         ACTION_EMERGENCY,
 127         ACTION_DEFAULT,
 128         ACTION_RELOAD,
 129         ACTION_REEXEC,
 130         ACTION_RUNLEVEL,
 131         ACTION_CANCEL_SHUTDOWN,
 132         _ACTION_MAX
 133 } arg_action = ACTION_SYSTEMCTL;
 134 static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;
 135 static char *arg_host = NULL;
 136 static unsigned arg_lines = 10;
 137 static OutputMode arg_output = OUTPUT_SHORT;
 138 static bool arg_plain = false;
 139
 140 static const struct {
 141         const char *verb;
 142         const char *method;
 143 } unit_actions[] = {
 144         { "start",                 "StartUnit" },
 145         { "stop",                  "StopUnit" },
 146         { "condstop",              "StopUnit" },
 147         { "reload",                "ReloadUnit" },
 148         { "restart",               "RestartUnit" },
 149         { "try-restart",           "TryRestartUnit" },
 150         { "condrestart",           "TryRestartUnit" },
 151         { "reload-or-restart",     "ReloadOrRestartUnit" },
 152         { "reload-or-try-restart", "ReloadOrTryRestartUnit" },
 153         { "condreload",            "ReloadOrTryRestartUnit" },
 154         { "force-reload",          "ReloadOrTryRestartUnit" }
 155 };
 156
 157 static bool original_stdout_is_tty;
 158
 159 static int daemon_reload(sd_bus *bus, char **args);
 160 static int halt_now(enum action a);
 161 static int check_one_unit(sd_bus *bus, const char *name, const char *good_states, bool quiet);
 162
 163 static char** strv_skip_first(char **strv) {
 164         if (strv_length(strv) > 0)
 165                 return strv + 1;
 166         return NULL;
 167 }
 168
 169 static void pager_open_if_enabled(void) {
 170
 171         if (arg_no_pager)
 172                 return;
 173
 174         pager_open(false);
 175 }
 176
 177 static void ask_password_agent_open_if_enabled(void) {
 178
 179         /* Open the password agent as a child process if necessary */
 180
 181         if (!arg_ask_password)
 182                 return;
 183
 184         if (arg_scope != UNIT_FILE_SYSTEM)
 185                 return;
 186
 187         if (arg_transport != BUS_TRANSPORT_LOCAL)
 188                 return;
 189
 190         ask_password_agent_open();
 191 }
 192
 193 #ifdef HAVE_LOGIND
 194 static void polkit_agent_open_if_enabled(void) {
 195
 196         /* Open the polkit agent as a child process if necessary */
 197
 198         if (!arg_ask_password)
 199                 return;
 200
 201         if (arg_scope != UNIT_FILE_SYSTEM)
 202                 return;
 203
 204         if (arg_transport != BUS_TRANSPORT_LOCAL)
 205                 return;
 206
 207         polkit_agent_open();
 208 }
 209 #endif
 210
 211 static int translate_bus_error_to_exit_status(int r, const sd_bus_error *error) {
 212         assert(error);
 213
 214         if (!sd_bus_error_is_set(error))
 215                 return r;
 216
 217         if (sd_bus_error_has_name(error, SD_BUS_ERROR_ACCESS_DENIED) ||
 218             sd_bus_error_has_name(error, BUS_ERROR_ONLY_BY_DEPENDENCY) ||
 219             sd_bus_error_has_name(error, BUS_ERROR_NO_ISOLATION) ||
 220             sd_bus_error_has_name(error, BUS_ERROR_TRANSACTION_IS_DESTRUCTIVE))
 221                 return EXIT_NOPERMISSION;
 222
 223         if (sd_bus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT))
 224                 return EXIT_NOTINSTALLED;
 225
 226         if (sd_bus_error_has_name(error, BUS_ERROR_JOB_TYPE_NOT_APPLICABLE) ||
 227             sd_bus_error_has_name(error, SD_BUS_ERROR_NOT_SUPPORTED))
 228                 return EXIT_NOTIMPLEMENTED;
 229
 230         if (sd_bus_error_has_name(error, BUS_ERROR_LOAD_FAILED))
 231                 return EXIT_NOTCONFIGURED;
 232
 233         if (r != 0)
 234                 return r;
 235
 236         return EXIT_FAILURE;
 237 }
 238
 239 static void warn_wall(enum action a) {
 240         static const char *table[_ACTION_MAX] = {
 241                 [ACTION_HALT]            = "The system is going down for system halt NOW!",
 242                 [ACTION_REBOOT]          = "The system is going down for reboot NOW!",
 243                 [ACTION_POWEROFF]        = "The system is going down for power-off NOW!",
 244                 [ACTION_KEXEC]           = "The system is going down for kexec reboot NOW!",
 245                 [ACTION_RESCUE]          = "The system is going down to rescue mode NOW!",
 246                 [ACTION_EMERGENCY]       = "The system is going down to emergency mode NOW!",
 247                 [ACTION_CANCEL_SHUTDOWN] = "The system shutdown has been cancelled NOW!"
 248         };
 249
 250         if (arg_no_wall)
 251                 return;
 252
 253         if (arg_wall) {
 254                 _cleanup_free_ char *p;
 255
 256                 p = strv_join(arg_wall, " ");
 257                 if (!p) {
 258                         log_oom();
 259                         return;
 260                 }
 261
 262                 if (*p) {
 263                         utmp_wall(p, NULL, NULL);
 264                         return;
 265                 }
 266         }
 267
 268         if (!table[a])
 269                 return;
 270
 271         utmp_wall(table[a], NULL, NULL);
 272 }
 273
 274 static bool avoid_bus(void) {
 275
 276         if (running_in_chroot() > 0)
 277                 return true;
 278
 279         if (sd_booted() <= 0)
 280                 return true;
 281
 282         if (!isempty(arg_root))
 283                 return true;
 284
 285         if (arg_scope == UNIT_FILE_GLOBAL)
 286                 return true;
 287
 288         return false;
 289 }
 290
 291 static int compare_unit_info(const void *a, const void *b) {
 292         const UnitInfo *u = a, *v = b;
 293         const char *d1, *d2;
 294         int r;
 295
 296         /* First, order by machine */
 297         if (!u->machine && v->machine)
 298                 return -1;
 299         if (u->machine && !v->machine)
 300                 return 1;
 301         if (u->machine && v->machine) {
 302                 r = strcasecmp(u->machine, v->machine);
 303                 if (r != 0)
 304                         return r;
 305         }
 306
 307         /* Second, order by unit type */
 308         d1 = strrchr(u->id, '.');
 309         d2 = strrchr(v->id, '.');
 310         if (d1 && d2) {
 311                 r = strcasecmp(d1, d2);
 312                 if (r != 0)
 313                         return r;
 314         }
 315
 316         /* Third, order by name */
 317         return strcasecmp(u->id, v->id);
 318 }
 319
 320 static bool output_show_unit(const UnitInfo *u, char **patterns) {
 321         const char *dot;
 322
 323         if (!strv_isempty(patterns)) {
 324                 char **pattern;
 325
 326                 STRV_FOREACH(pattern, patterns)
 327                         if (fnmatch(*pattern, u->id, FNM_NOESCAPE) == 0)
 328                                 return true;
 329                 return false;
 330         }
 331
 332         return (!arg_types || ((dot = strrchr(u->id, '.')) &&
 333                                strv_find(arg_types, dot+1))) &&
 334                 (arg_all || !(streq(u->active_state, "inactive")
 335                               || u->following[0]) || u->job_id > 0);
 336 }
 337
 338 static int output_units_list(const UnitInfo *unit_infos, unsigned c) {
 339         unsigned circle_len = 0, id_len, max_id_len, load_len, active_len, sub_len, job_len, desc_len;
 340         const UnitInfo *u;
 341         unsigned n_shown = 0;
 342         int job_count = 0;
 343
 344         max_id_len = strlen("UNIT");
 345         load_len = strlen("LOAD");
 346         active_len = strlen("ACTIVE");
 347         sub_len = strlen("SUB");
 348         job_len = strlen("JOB");
 349         desc_len = 0;
 350
 351         for (u = unit_infos; u < unit_infos + c; u++) {
 352                 max_id_len = MAX(max_id_len, strlen(u->id) + (u->machine ? strlen(u->machine)+1 : 0));
 353                 load_len = MAX(load_len, strlen(u->load_state));
 354                 active_len = MAX(active_len, strlen(u->active_state));
 355                 sub_len = MAX(sub_len, strlen(u->sub_state));
 356
 357                 if (u->job_id != 0) {
 358                         job_len = MAX(job_len, strlen(u->job_type));
 359                         job_count++;
 360                 }
 361
 362                 if (!arg_no_legend &&
 363                     (streq(u->active_state, "failed") ||
 364                      STR_IN_SET(u->load_state, "error", "not-found", "masked")))
 365                         circle_len = 2;
 366         }
 367
 368         if (!arg_full && original_stdout_is_tty) {
 369                 unsigned basic_len;
 370
 371                 id_len = MIN(max_id_len, 25u);
 372                 basic_len = circle_len + 5 + id_len + 5 + active_len + sub_len;
 373
 374                 if (job_count)
 375                         basic_len += job_len + 1;
 376
 377                 if (basic_len < (unsigned) columns()) {
 378                         unsigned extra_len, incr;
 379                         extra_len = columns() - basic_len;
 380
 381                         /* Either UNIT already got 25, or is fully satisfied.
 382                          * Grant up to 25 to DESC now. */
 383                         incr = MIN(extra_len, 25u);
 384                         desc_len += incr;
 385                         extra_len -= incr;
 386
 387                         /* split the remaining space between UNIT and DESC,
 388                          * but do not give UNIT more than it needs. */
 389                         if (extra_len > 0) {
 390                                 incr = MIN(extra_len / 2, max_id_len - id_len);
 391                                 id_len += incr;
 392                                 desc_len += extra_len - incr;
 393                         }
 394                 }
 395         } else
 396                 id_len = max_id_len;
 397
 398         for (u = unit_infos; u < unit_infos + c; u++) {
 399                 _cleanup_free_ char *e = NULL, *j = NULL;
 400                 const char *on_loaded = "", *off_loaded = "";
 401                 const char *on_active = "", *off_active = "";
 402                 const char *on_circle = "", *off_circle = "";
 403                 const char *id;
 404                 bool circle = false;
 405
 406                 if (!n_shown && !arg_no_legend) {
 407
 408                         if (circle_len > 0)
 409                                 fputs("  ", stdout);
 410
 411                         printf("%-*s %-*s %-*s %-*s ",
 412                                id_len, "UNIT",
 413                                load_len, "LOAD",
 414                                active_len, "ACTIVE",
 415                                sub_len, "SUB");
 416
 417                         if (job_count)
 418                                 printf("%-*s ", job_len, "JOB");
 419
 420                         if (!arg_full && arg_no_pager)
 421                                 printf("%.*s\n", desc_len, "DESCRIPTION");
 422                         else
 423                                 printf("%s\n", "DESCRIPTION");
 424                 }
 425
 426                 n_shown++;
 427
 428                 if (STR_IN_SET(u->load_state, "error", "not-found", "masked")) {
 429                         on_loaded = ansi_highlight_red();
 430                         on_circle = ansi_highlight_yellow();
 431                         off_loaded = off_circle = ansi_highlight_off();
 432                         circle = true;
 433                 }
 434
 435                 if (streq(u->active_state, "failed")) {
 436                         on_circle = on_active = ansi_highlight_red();
 437                         off_circle = off_active = ansi_highlight_off();
 438                         circle = true;
 439                 }
 440
 441                 if (u->machine) {
 442                         j = strjoin(u->machine, ":", u->id, NULL);
 443                         if (!j)
 444                                 return log_oom();
 445
 446                         id = j;
 447                 } else
 448                         id = u->id;
 449
 450                 if (arg_full) {
 451                         e = ellipsize(id, id_len, 33);
 452                         if (!e)
 453                                 return log_oom();
 454
 455                         id = e;
 456                 }
 457
 458                 if (circle_len > 0)
 459                         printf("%s%s%s ", on_circle, circle ? draw_special_char(DRAW_BLACK_CIRCLE) : " ", off_circle);
 460
 461                 printf("%s%-*s%s %s%-*s%s %s%-*s %-*s%s %-*s",
 462                        on_active, id_len, id, off_active,
 463                        on_loaded, load_len, u->load_state, off_loaded,
 464                        on_active, active_len, u->active_state,
 465                        sub_len, u->sub_state, off_active,
 466                        job_count ? job_len + 1 : 0, u->job_id ? u->job_type : "");
 467
 468                 if (desc_len > 0)
 469                         printf("%.*s\n", desc_len, u->description);
 470                 else
 471                         printf("%s\n", u->description);
 472         }
 473
 474         if (!arg_no_legend) {
 475                 const char *on, *off;
 476
 477                 if (n_shown) {
 478                         puts("\n"
 479                              "LOAD   = Reflects whether the unit definition was properly loaded.\n"
 480                              "ACTIVE = The high-level unit activation state, i.e. generalization of SUB.\n"
 481                              "SUB    = The low-level unit activation state, values depend on unit type.");
 482                         puts(job_count ? "JOB    = Pending job for the unit.\n" : "");
 483                         on = ansi_highlight();
 484                         off = ansi_highlight_off();
 485                 } else {
 486                         on = ansi_highlight_red();
 487                         off = ansi_highlight_off();
 488                 }
 489
 490                 if (arg_all)
 491                         printf("%s%u loaded units listed.%s\n"
 492                                "To show all installed unit files use 'systemctl list-unit-files'.\n",
 493                                on, n_shown, off);
 494                 else
 495                         printf("%s%u loaded units listed.%s Pass --all to see loaded but inactive units, too.\n"
 496                                "To show all installed unit files use 'systemctl list-unit-files'.\n",
 497                                on, n_shown, off);
 498         }
 499
 500         return 0;
 501 }
 502
 503 static int get_unit_list(
 504                 sd_bus *bus,
 505                 const char *machine,
 506                 char **patterns,
 507                 UnitInfo **unit_infos,
 508                 int c,
 509                 sd_bus_message **_reply) {
 510
 511         _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
 512         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
 513         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
 514         size_t size = c;
 515         int r;
 516         UnitInfo u;
 517
 518         assert(bus);
 519         assert(unit_infos);
 520         assert(_reply);
 521
 522         r = sd_bus_message_new_method_call(
 523                         bus,
 524                         &m,
 525                         "org.freedesktop.systemd1",
 526                         "/org/freedesktop/systemd1",
 527                         "org.freedesktop.systemd1.Manager",
 528                         "ListUnitsFiltered");
 529
 530         if (r < 0)
 531                 return bus_log_create_error(r);
 532
 533         r = sd_bus_message_append_strv(m, arg_states);
 534         if (r < 0)
 535                 return bus_log_create_error(r);
 536
 537         r = sd_bus_call(bus, m, 0, &error, &reply);
 538         if (r < 0) {
 539                 log_error("Failed to list units: %s", bus_error_message(&error, r));
 540                 return r;
 541         }
 542
 543         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssssouso)");
 544         if (r < 0)
 545                 return bus_log_parse_error(r);
 546
 547         while ((r = bus_parse_unit_info(reply, &u)) > 0) {
 548                 u.machine = machine;
 549
 550                 if (!output_show_unit(&u, patterns))
 551                         continue;
 552
 553                 if (!GREEDY_REALLOC(*unit_infos, size, c+1))
 554                         return log_oom();
 555
 556                 (*unit_infos)[c++] = u;
 557         }
 558         if (r < 0)
 559                 return bus_log_parse_error(r);
 560
 561         r = sd_bus_message_exit_container(reply);
 562         if (r < 0)
 563                 return bus_log_parse_error(r);
 564
 565         *_reply = reply;
 566         reply = NULL;
 567
 568         return c;
 569 }
 570
 571 static void message_set_freep(Set **set) {
 572         sd_bus_message *m;
 573
 574         while ((m = set_steal_first(*set)))
 575                 sd_bus_message_unref(m);
 576
 577         set_free(*set);
 578 }
 579
 580 static int get_unit_list_recursive(
 581                 sd_bus *bus,
 582                 char **patterns,
 583                 UnitInfo **_unit_infos,
 584                 Set **_replies,
 585                 char ***_machines) {
 586
 587         _cleanup_free_ UnitInfo *unit_infos = NULL;
 588         _cleanup_(message_set_freep) Set *replies;
 589         sd_bus_message *reply;
 590         int c, r;
 591
 592         assert(bus);
 593         assert(_replies);
 594         assert(_unit_infos);
 595         assert(_machines);
 596
 597         replies = set_new(NULL);
 598         if (!replies)
 599                 return log_oom();
 600
 601         c = get_unit_list(bus, NULL, patterns, &unit_infos, 0, &reply);
 602         if (c < 0)
 603                 return c;
 604
 605         r = set_put(replies, reply);
 606         if (r < 0) {
 607                 sd_bus_message_unref(reply);
 608                 return r;
 609         }
 610
 611         if (arg_recursive) {
 612                 _cleanup_strv_free_ char **machines = NULL;
 613                 char **i;
 614
 615                 r = sd_get_machine_names(&machines);
 616                 if (r < 0)
 617                         return r;
 618
 619                 STRV_FOREACH(i, machines) {
 620                         _cleanup_bus_close_unref_ sd_bus *container = NULL;
 621                         int k;
 622
 623                         r = sd_bus_open_system_container(&container, *i);
 624                         if (r < 0) {
 625                                 log_error("Failed to connect to container %s: %s", *i, strerror(-r));
 626                                 continue;
 627                         }
 628
 629                         k = get_unit_list(container, *i, patterns, &unit_infos, c, &reply);
 630                         if (k < 0)
 631                                 return k;
 632
 633                         c = k;
 634
 635                         r = set_put(replies, reply);
 636                         if (r < 0) {
 637                                 sd_bus_message_unref(reply);
 638                                 return r;
 639                         }
 640                 }
 641
 642                 *_machines = machines;
 643                 machines = NULL;
 644         } else
 645                 *_machines = NULL;
 646
 647         *_unit_infos = unit_infos;
 648         unit_infos = NULL;
 649
 650         *_replies = replies;
 651         replies = NULL;
 652
 653         return c;
 654 }
 655
 656 static int list_units(sd_bus *bus, char **args) {
 657         _cleanup_free_ UnitInfo *unit_infos = NULL;
 658         _cleanup_(message_set_freep) Set *replies = NULL;
 659         _cleanup_strv_free_ char **machines = NULL;
 660         int r;
 661
 662         pager_open_if_enabled();
 663
 664         r = get_unit_list_recursive(bus, strv_skip_first(args), &unit_infos, &replies, &machines);
 665         if (r < 0)
 666                 return r;
 667
 668         qsort_safe(unit_infos, r, sizeof(UnitInfo), compare_unit_info);
 669         return output_units_list(unit_infos, r);
 670 }
 671
 672 static int get_triggered_units(
 673                 sd_bus *bus,
 674                 const char* path,
 675                 char*** ret) {
 676
 677         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
 678         int r;
 679
 680         r = sd_bus_get_property_strv(
 681                         bus,
 682                         "org.freedesktop.systemd1",
 683                         path,
 684                         "org.freedesktop.systemd1.Unit",
 685                         "Triggers",
 686                         &error,
 687                         ret);
 688
 689         if (r < 0)
 690                 log_error("Failed to determine triggers: %s", bus_error_message(&error, r));
 691
 692         return 0;
 693 }
 694
 695 static int get_listening(
 696                 sd_bus *bus,
 697                 const char* unit_path,
 698                 char*** listening) {
 699
 700         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
 701         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
 702         const char *type, *path;
 703         int r, n = 0;
 704
 705         r = sd_bus_get_property(
 706                         bus,
 707                         "org.freedesktop.systemd1",
 708                         unit_path,
 709                         "org.freedesktop.systemd1.Socket",
 710                         "Listen",
 711                         &error,
 712                         &reply,
 713                         "a(ss)");
 714         if (r < 0) {
 715                 log_error("Failed to get list of listening sockets: %s", bus_error_message(&error, r));
 716                 return r;
 717         }
 718
 719         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ss)");
 720         if (r < 0)
 721                 return bus_log_parse_error(r);
 722
 723         while ((r = sd_bus_message_read(reply, "(ss)", &type, &path)) > 0) {
 724
 725                 r = strv_extend(listening, type);
 726                 if (r < 0)
 727                         return log_oom();
 728
 729                 r = strv_extend(listening, path);
 730                 if (r < 0)
 731                         return log_oom();
 732
 733                 n++;
 734         }
 735         if (r < 0)
 736                 return bus_log_parse_error(r);
 737
 738         r = sd_bus_message_exit_container(reply);
 739         if (r < 0)
 740                 return bus_log_parse_error(r);
 741
 742         return n;
 743 }
 744
 745 struct socket_info {
 746         const char *machine;
 747         const char* id;
 748
 749         char* type;
 750         char* path;
 751
 752         /* Note: triggered is a list here, although it almost certainly
 753          * will always be one unit. Nevertheless, dbus API allows for multiple
 754          * values, so let's follow that.*/
 755         char** triggered;
 756
 757         /* The strv above is shared. free is set only in the first one. */
 758         bool own_triggered;
 759 };
 760
 761 static int socket_info_compare(const struct socket_info *a, const struct socket_info *b) {
 762         int o;
 763
 764         assert(a);
 765         assert(b);
 766
 767         if (!a->machine && b->machine)
 768                 return -1;
 769         if (a->machine && !b->machine)
 770                 return 1;
 771         if (a->machine && b->machine) {
 772                 o = strcasecmp(a->machine, b->machine);
 773                 if (o != 0)
 774                         return o;
 775         }
 776
 777         o = strcmp(a->path, b->path);
 778         if (o == 0)
 779                 o = strcmp(a->type, b->type);
 780
 781         return o;
 782 }
 783
 784 static int output_sockets_list(struct socket_info *socket_infos, unsigned cs) {
 785         struct socket_info *s;
 786         unsigned pathlen = strlen("LISTEN"),
 787                 typelen = strlen("TYPE") * arg_show_types,
 788                 socklen = strlen("UNIT"),
 789                 servlen = strlen("ACTIVATES");
 790         const char *on, *off;
 791
 792         for (s = socket_infos; s < socket_infos + cs; s++) {
 793                 unsigned tmp = 0;
 794                 char **a;
 795
 796                 socklen = MAX(socklen, strlen(s->id));
 797                 if (arg_show_types)
 798                         typelen = MAX(typelen, strlen(s->type));
 799                 pathlen = MAX(pathlen, strlen(s->path) + (s->machine ? strlen(s->machine)+1 : 0));
 800
 801                 STRV_FOREACH(a, s->triggered)
 802                         tmp += strlen(*a) + 2*(a != s->triggered);
 803                 servlen = MAX(servlen, tmp);
 804         }
 805
 806         if (cs) {
 807                 if (!arg_no_legend)
 808                         printf("%-*s %-*.*s%-*s %s\n",
 809                                pathlen, "LISTEN",
 810                                typelen + arg_show_types, typelen + arg_show_types, "TYPE ",
 811                                socklen, "UNIT",
 812                                "ACTIVATES");
 813
 814                 for (s = socket_infos; s < socket_infos + cs; s++) {
 815                         _cleanup_free_ char *j = NULL;
 816                         const char *path;
 817                         char **a;
 818
 819                         if (s->machine) {
 820                                 j = strjoin(s->machine, ":", s->path, NULL);
 821                                 if (!j)
 822                                         return log_oom();
 823                                 path = j;
 824                         } else
 825                                 path = s->path;
 826
 827                         if (arg_show_types)
 828                                 printf("%-*s %-*s %-*s",
 829                                        pathlen, path, typelen, s->type, socklen, s->id);
 830                         else
 831                                 printf("%-*s %-*s",
 832                                        pathlen, path, socklen, s->id);
 833                         STRV_FOREACH(a, s->triggered)
 834                                 printf("%s %s",
 835                                        a == s->triggered ? "" : ",", *a);
 836                         printf("\n");
 837                 }
 838
 839                 on = ansi_highlight();
 840                 off = ansi_highlight_off();
 841                 if (!arg_no_legend)
 842                         printf("\n");
 843         } else {
 844                 on = ansi_highlight_red();
 845                 off = ansi_highlight_off();
 846         }
 847
 848         if (!arg_no_legend) {
 849                 printf("%s%u sockets listed.%s\n", on, cs, off);
 850                 if (!arg_all)
 851                         printf("Pass --all to see loaded but inactive sockets, too.\n");
 852         }
 853
 854         return 0;
 855 }
 856
 857 static int list_sockets(sd_bus *bus, char **args) {
 858         _cleanup_(message_set_freep) Set *replies = NULL;
 859         _cleanup_strv_free_ char **machines = NULL;
 860         _cleanup_free_ UnitInfo *unit_infos = NULL;
 861         _cleanup_free_ struct socket_info *socket_infos = NULL;
 862         const UnitInfo *u;
 863         struct socket_info *s;
 864         unsigned cs = 0;
 865         size_t size = 0;
 866         int r = 0, n;
 867
 868         pager_open_if_enabled();
 869
 870         n = get_unit_list_recursive(bus, strv_skip_first(args), &unit_infos, &replies, &machines);
 871         if (n < 0)
 872                 return n;
 873
 874         for (u = unit_infos; u < unit_infos + n; u++) {
 875                 _cleanup_strv_free_ char **listening = NULL, **triggered = NULL;
 876                 int i, c;
 877
 878                 if (!endswith(u->id, ".socket"))
 879                         continue;
 880
 881                 r = get_triggered_units(bus, u->unit_path, &triggered);
 882                 if (r < 0)
 883                         goto cleanup;
 884
 885                 c = get_listening(bus, u->unit_path, &listening);
 886                 if (c < 0) {
 887                         r = c;
 888                         goto cleanup;
 889                 }
 890
 891                 if (!GREEDY_REALLOC(socket_infos, size, cs + c)) {
 892                         r = log_oom();
 893                         goto cleanup;
 894                 }
 895
 896                 for (i = 0; i < c; i++)
 897                         socket_infos[cs + i] = (struct socket_info) {
 898                                 .machine = u->machine,
 899                                 .id = u->id,
 900                                 .type = listening[i*2],
 901                                 .path = listening[i*2 + 1],
 902                                 .triggered = triggered,
 903                                 .own_triggered = i==0,
 904                         };
 905
 906                 /* from this point on we will cleanup those socket_infos */
 907                 cs += c;
 908                 free(listening);
 909                 listening = triggered = NULL; /* avoid cleanup */
 910         }
 911
 912         qsort_safe(socket_infos, cs, sizeof(struct socket_info),
 913                    (__compar_fn_t) socket_info_compare);
 914
 915         output_sockets_list(socket_infos, cs);
 916
 917  cleanup:
 918         assert(cs == 0 || socket_infos);
 919         for (s = socket_infos; s < socket_infos + cs; s++) {
 920                 free(s->type);
 921                 free(s->path);
 922                 if (s->own_triggered)
 923                         strv_free(s->triggered);
 924         }
 925
 926         return r;
 927 }
 928
 929 static int get_next_elapse(
 930                 sd_bus *bus,
 931                 const char *path,
 932                 dual_timestamp *next) {
 933
 934         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
 935         dual_timestamp t;
 936         int r;
 937
 938         assert(bus);
 939         assert(path);
 940         assert(next);
 941
 942         r = sd_bus_get_property_trivial(
 943                         bus,
 944                         "org.freedesktop.systemd1",
 945                         path,
 946                         "org.freedesktop.systemd1.Timer",
 947                         "NextElapseUSecMonotonic",
 948                         &error,
 949                         't',
 950                         &t.monotonic);
 951         if (r < 0) {
 952                 log_error("Failed to get next elapsation time: %s", bus_error_message(&error, r));
 953                 return r;
 954         }
 955
 956         r = sd_bus_get_property_trivial(
 957                         bus,
 958                         "org.freedesktop.systemd1",
 959                         path,
 960                         "org.freedesktop.systemd1.Timer",
 961                         "NextElapseUSecRealtime",
 962                         &error,
 963                         't',
 964                         &t.realtime);
 965         if (r < 0) {
 966                 log_error("Failed to get next elapsation time: %s", bus_error_message(&error, r));
 967                 return r;
 968         }
 969
 970         *next = t;
 971         return 0;
 972 }
 973
 974 static int get_last_trigger(
 975                 sd_bus *bus,
 976                 const char *path,
 977                 usec_t *last) {
 978
 979         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
 980         int r;
 981
 982         assert(bus);
 983         assert(path);
 984         assert(last);
 985
 986         r = sd_bus_get_property_trivial(
 987                         bus,
 988                         "org.freedesktop.systemd1",
 989                         path,
 990                         "org.freedesktop.systemd1.Timer",
 991                         "LastTriggerUSec",
 992                         &error,
 993                         't',
 994                         last);
 995         if (r < 0) {
 996                 log_error("Failed to get last trigger time: %s", bus_error_message(&error, r));
 997                 return r;
 998         }
 999
1000         return 0;
1001 }
1002
1003 struct timer_info {
1004         const char* machine;
1005         const char* id;
1006         usec_t next_elapse;
1007         usec_t last_trigger;
1008         char** triggered;
1009 };
1010
1011 static int timer_info_compare(const struct timer_info *a, const struct timer_info *b) {
1012         int o;
1013
1014         assert(a);
1015         assert(b);
1016
1017         if (!a->machine && b->machine)
1018                 return -1;
1019         if (a->machine && !b->machine)
1020                 return 1;
1021         if (a->machine && b->machine) {
1022                 o = strcasecmp(a->machine, b->machine);
1023                 if (o != 0)
1024                         return o;
1025         }
1026
1027         if (a->next_elapse < b->next_elapse)
1028                 return -1;
1029         if (a->next_elapse > b->next_elapse)
1030                 return 1;
1031
1032         return strcmp(a->id, b->id);
1033 }
1034
1035 static int output_timers_list(struct timer_info *timer_infos, unsigned n) {
1036         struct timer_info *t;
1037         unsigned
1038                 nextlen = strlen("NEXT"),
1039                 leftlen = strlen("LEFT"),
1040                 lastlen = strlen("LAST"),
1041                 passedlen = strlen("PASSED"),
1042                 unitlen = strlen("UNIT"),
1043                 activatelen = strlen("ACTIVATES");
1044
1045         const char *on, *off;
1046
1047         assert(timer_infos || n == 0);
1048
1049         for (t = timer_infos; t < timer_infos + n; t++) {
1050                 unsigned ul = 0;
1051                 char **a;
1052
1053                 if (t->next_elapse > 0) {
1054                         char tstamp[FORMAT_TIMESTAMP_MAX] = "", trel[FORMAT_TIMESTAMP_RELATIVE_MAX] = "";
1055
1056                         format_timestamp(tstamp, sizeof(tstamp), t->next_elapse);
1057                         nextlen = MAX(nextlen, strlen(tstamp) + 1);
1058
1059                         format_timestamp_relative(trel, sizeof(trel), t->next_elapse);
1060                         leftlen = MAX(leftlen, strlen(trel));
1061                 }
1062
1063                 if (t->last_trigger > 0) {
1064                         char tstamp[FORMAT_TIMESTAMP_MAX] = "", trel[FORMAT_TIMESTAMP_RELATIVE_MAX] = "";
1065
1066                         format_timestamp(tstamp, sizeof(tstamp), t->last_trigger);
1067                         lastlen = MAX(lastlen, strlen(tstamp) + 1);
1068
1069                         format_timestamp_relative(trel, sizeof(trel), t->last_trigger);
1070                         passedlen = MAX(passedlen, strlen(trel));
1071                 }
1072
1073                 unitlen = MAX(unitlen, strlen(t->id) + (t->machine ? strlen(t->machine)+1 : 0));
1074
1075                 STRV_FOREACH(a, t->triggered)
1076                         ul += strlen(*a) + 2*(a != t->triggered);
1077
1078                 activatelen = MAX(activatelen, ul);
1079         }
1080
1081         if (n > 0) {
1082                 if (!arg_no_legend)
1083                         printf("%-*s %-*s %-*s %-*s %-*s %s\n",
1084                                nextlen,   "NEXT",
1085                                leftlen,   "LEFT",
1086                                lastlen,   "LAST",
1087                                passedlen, "PASSED",
1088                                unitlen,   "UNIT",
1089                                           "ACTIVATES");
1090
1091                 for (t = timer_infos; t < timer_infos + n; t++) {
1092                         _cleanup_free_ char *j = NULL;
1093                         const char *unit;
1094                         char tstamp1[FORMAT_TIMESTAMP_MAX] = "n/a", trel1[FORMAT_TIMESTAMP_RELATIVE_MAX] = "n/a";
1095                         char tstamp2[FORMAT_TIMESTAMP_MAX] = "n/a", trel2[FORMAT_TIMESTAMP_RELATIVE_MAX] = "n/a";
1096                         char **a;
1097
1098                         format_timestamp(tstamp1, sizeof(tstamp1), t->next_elapse);
1099                         format_timestamp_relative(trel1, sizeof(trel1), t->next_elapse);
1100
1101                         format_timestamp(tstamp2, sizeof(tstamp2), t->last_trigger);
1102                         format_timestamp_relative(trel2, sizeof(trel2), t->last_trigger);
1103
1104                         if (t->machine) {
1105                                 j = strjoin(t->machine, ":", t->id, NULL);
1106                                 if (!j)
1107                                         return log_oom();
1108                                 unit = j;
1109                         } else
1110                                 unit = t->id;
1111
1112                         printf("%-*s %-*s %-*s %-*s %-*s",
1113                                nextlen, tstamp1, leftlen, trel1, lastlen, tstamp2, passedlen, trel2, unitlen, unit);
1114
1115                         STRV_FOREACH(a, t->triggered)
1116                                 printf("%s %s",
1117                                        a == t->triggered ? "" : ",", *a);
1118                         printf("\n");
1119                 }
1120
1121                 on = ansi_highlight();
1122                 off = ansi_highlight_off();
1123                 if (!arg_no_legend)
1124                         printf("\n");
1125         } else {
1126                 on = ansi_highlight_red();
1127                 off = ansi_highlight_off();
1128         }
1129
1130         if (!arg_no_legend) {
1131                 printf("%s%u timers listed.%s\n", on, n, off);
1132                 if (!arg_all)
1133                         printf("Pass --all to see loaded but inactive timers, too.\n");
1134         }
1135
1136         return 0;
1137 }
1138
1139 static usec_t calc_next_elapse(dual_timestamp *nw, dual_timestamp *next) {
1140         usec_t next_elapse;
1141
1142         assert(nw);
1143         assert(next);
1144
1145         if (next->monotonic != USEC_INFINITY && next->monotonic > 0) {
1146                 usec_t converted;
1147
1148                 if (next->monotonic > nw->monotonic)
1149                         converted = nw->realtime + (next->monotonic - nw->monotonic);
1150                 else
1151                         converted = nw->realtime - (nw->monotonic - next->monotonic);
1152
1153                 if (next->realtime != USEC_INFINITY && next->realtime > 0)
1154                         next_elapse = MIN(converted, next->realtime);
1155                 else
1156                         next_elapse = converted;
1157
1158         } else
1159                 next_elapse = next->realtime;
1160
1161         return next_elapse;
1162 }
1163
1164 static int list_timers(sd_bus *bus, char **args) {
1165         _cleanup_(message_set_freep) Set *replies = NULL;
1166         _cleanup_strv_free_ char **machines = NULL;
1167         _cleanup_free_ struct timer_info *timer_infos = NULL;
1168         _cleanup_free_ UnitInfo *unit_infos = NULL;
1169         struct timer_info *t;
1170         const UnitInfo *u;
1171         size_t size = 0;
1172         int n, c = 0;
1173         dual_timestamp nw;
1174         int r = 0;
1175
1176         pager_open_if_enabled();
1177
1178         n = get_unit_list_recursive(bus, strv_skip_first(args), &unit_infos, &replies, &machines);
1179         if (n < 0)
1180                 return n;
1181
1182         dual_timestamp_get(&nw);
1183
1184         for (u = unit_infos; u < unit_infos + n; u++) {
1185                 _cleanup_strv_free_ char **triggered = NULL;
1186                 dual_timestamp next = {};
1187                 usec_t m, last = 0;
1188
1189                 if (!endswith(u->id, ".timer"))
1190                         continue;
1191
1192                 r = get_triggered_units(bus, u->unit_path, &triggered);
1193                 if (r < 0)
1194                         goto cleanup;
1195
1196                 r = get_next_elapse(bus, u->unit_path, &next);
1197                 if (r < 0)
1198                         goto cleanup;
1199
1200                 get_last_trigger(bus, u->unit_path, &last);
1201
1202                 if (!GREEDY_REALLOC(timer_infos, size, c+1)) {
1203                         r = log_oom();
1204                         goto cleanup;
1205                 }
1206
1207                 m = calc_next_elapse(&nw, &next);
1208
1209                 timer_infos[c++] = (struct timer_info) {
1210                         .machine = u->machine,
1211                         .id = u->id,
1212                         .next_elapse = m,
1213                         .last_trigger = last,
1214                         .triggered = triggered,
1215                 };
1216
1217                 triggered = NULL; /* avoid cleanup */
1218         }
1219
1220         qsort_safe(timer_infos, c, sizeof(struct timer_info),
1221                    (__compar_fn_t) timer_info_compare);
1222
1223         output_timers_list(timer_infos, c);
1224
1225  cleanup:
1226         for (t = timer_infos; t < timer_infos + c; t++)
1227                 strv_free(t->triggered);
1228
1229         return r;
1230 }
1231
1232 static int compare_unit_file_list(const void *a, const void *b) {
1233         const char *d1, *d2;
1234         const UnitFileList *u = a, *v = b;
1235
1236         d1 = strrchr(u->path, '.');
1237         d2 = strrchr(v->path, '.');
1238
1239         if (d1 && d2) {
1240                 int r;
1241
1242                 r = strcasecmp(d1, d2);
1243                 if (r != 0)
1244                         return r;
1245         }
1246
1247         return strcasecmp(basename(u->path), basename(v->path));
1248 }
1249
1250 static bool output_show_unit_file(const UnitFileList *u, char **patterns) {
1251         const char *dot;
1252
1253         if (!strv_isempty(patterns)) {
1254                 char **pattern;
1255
1256                 STRV_FOREACH(pattern, patterns)
1257                         if (fnmatch(*pattern, basename(u->path), FNM_NOESCAPE) == 0)
1258                                 return true;
1259                 return false;
1260         }
1261
1262         return !arg_types || ((dot = strrchr(u->path, '.')) && strv_find(arg_types, dot+1));
1263 }
1264
1265 static void output_unit_file_list(const UnitFileList *units, unsigned c) {
1266         unsigned max_id_len, id_cols, state_cols;
1267         const UnitFileList *u;
1268
1269         max_id_len = strlen("UNIT FILE");
1270         state_cols = strlen("STATE");
1271
1272         for (u = units; u < units + c; u++) {
1273                 max_id_len = MAX(max_id_len, strlen(basename(u->path)));
1274                 state_cols = MAX(state_cols, strlen(unit_file_state_to_string(u->state)));
1275         }
1276
1277         if (!arg_full) {
1278                 unsigned basic_cols;
1279
1280                 id_cols = MIN(max_id_len, 25u);
1281                 basic_cols = 1 + id_cols + state_cols;
1282                 if (basic_cols < (unsigned) columns())
1283                         id_cols += MIN(columns() - basic_cols, max_id_len - id_cols);
1284         } else
1285                 id_cols = max_id_len;
1286
1287         if (!arg_no_legend)
1288                 printf("%-*s %-*s\n",
1289                        id_cols, "UNIT FILE",
1290                        state_cols, "STATE");
1291
1292         for (u = units; u < units + c; u++) {
1293                 _cleanup_free_ char *e = NULL;
1294                 const char *on, *off;
1295                 const char *id;
1296
1297                 if (u->state == UNIT_FILE_MASKED ||
1298                     u->state == UNIT_FILE_MASKED_RUNTIME ||
1299                     u->state == UNIT_FILE_DISABLED ||
1300                     u->state == UNIT_FILE_INVALID) {
1301                         on  = ansi_highlight_red();
1302                         off = ansi_highlight_off();
1303                 } else if (u->state == UNIT_FILE_ENABLED) {
1304                         on  = ansi_highlight_green();
1305                         off = ansi_highlight_off();
1306                 } else
1307                         on = off = "";
1308
1309                 id = basename(u->path);
1310
1311                 e = arg_full ? NULL : ellipsize(id, id_cols, 33);
1312
1313                 printf("%-*s %s%-*s%s\n",
1314                        id_cols, e ? e : id,
1315                        on, state_cols, unit_file_state_to_string(u->state), off);
1316         }
1317
1318         if (!arg_no_legend)
1319                 printf("\n%u unit files listed.\n", c);
1320 }
1321
1322 static int list_unit_files(sd_bus *bus, char **args) {
1323         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1324         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1325         _cleanup_free_ UnitFileList *units = NULL;
1326         UnitFileList *unit;
1327         size_t size = 0;
1328         unsigned c = 0;
1329         const char *state;
1330         char *path;
1331         int r;
1332
1333         pager_open_if_enabled();
1334
1335         if (avoid_bus()) {
1336                 Hashmap *h;
1337                 UnitFileList *u;
1338                 Iterator i;
1339                 unsigned n_units;
1340
1341                 h = hashmap_new(&string_hash_ops);
1342                 if (!h)
1343                         return log_oom();
1344
1345                 r = unit_file_get_list(arg_scope, arg_root, h);
1346                 if (r < 0) {
1347                         unit_file_list_free(h);
1348                         log_error("Failed to get unit file list: %s", strerror(-r));
1349                         return r;
1350                 }
1351
1352                 n_units = hashmap_size(h);
1353
1354                 units = new(UnitFileList, n_units);
1355                 if (!units && n_units > 0) {
1356                         unit_file_list_free(h);
1357                         return log_oom();
1358                 }
1359
1360                 HASHMAP_FOREACH(u, h, i) {
1361                         if (!output_show_unit_file(u, strv_skip_first(args)))
1362                                 continue;
1363
1364                         units[c++] = *u;
1365                         free(u);
1366                 }
1367
1368                 assert(c <= n_units);
1369                 hashmap_free(h);
1370         } else {
1371                 r = sd_bus_call_method(
1372                                 bus,
1373                                 "org.freedesktop.systemd1",
1374                                 "/org/freedesktop/systemd1",
1375                                 "org.freedesktop.systemd1.Manager",
1376                                 "ListUnitFiles",
1377                                 &error,
1378                                 &reply,
1379                                 NULL);
1380                 if (r < 0) {
1381                         log_error("Failed to list unit files: %s", bus_error_message(&error, r));
1382                         return r;
1383                 }
1384
1385                 r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ss)");
1386                 if (r < 0)
1387                         return bus_log_parse_error(r);
1388
1389                 while ((r = sd_bus_message_read(reply, "(ss)", &path, &state)) > 0) {
1390
1391                         if (!GREEDY_REALLOC(units, size, c + 1))
1392                                 return log_oom();
1393
1394                         units[c] = (struct UnitFileList) {
1395                                 path,
1396                                 unit_file_state_from_string(state)
1397                         };
1398
1399                         if (output_show_unit_file(&units[c], strv_skip_first(args)))
1400                                 c ++;
1401
1402                 }
1403                 if (r < 0)
1404                         return bus_log_parse_error(r);
1405
1406                 r = sd_bus_message_exit_container(reply);
1407                 if (r < 0)
1408                         return bus_log_parse_error(r);
1409         }
1410
1411         qsort_safe(units, c, sizeof(UnitFileList), compare_unit_file_list);
1412         output_unit_file_list(units, c);
1413
1414         if (avoid_bus()) {
1415                 for (unit = units; unit < units + c; unit++)
1416                         free(unit->path);
1417         }
1418
1419         return 0;
1420 }
1421
1422 static int list_dependencies_print(const char *name, int level, unsigned int branches, bool last) {
1423         _cleanup_free_ char *n = NULL;
1424         size_t max_len = MAX(columns(),20u);
1425         size_t len = 0;
1426         int i;
1427
1428         if (!arg_plain) {
1429
1430                 for (i = level - 1; i >= 0; i--) {
1431                         len += 2;
1432                         if (len > max_len - 3 && !arg_full) {
1433                                 printf("%s...\n",max_len % 2 ? "" : " ");
1434                                 return 0;
1435                         }
1436                         printf("%s", draw_special_char(branches & (1 << i) ? DRAW_TREE_VERTICAL : DRAW_TREE_SPACE));
1437                 }
1438                 len += 2;
1439
1440                 if (len > max_len - 3 && !arg_full) {
1441                         printf("%s...\n",max_len % 2 ? "" : " ");
1442                         return 0;
1443                 }
1444
1445                 printf("%s", draw_special_char(last ? DRAW_TREE_RIGHT : DRAW_TREE_BRANCH));
1446         }
1447
1448         if (arg_full){
1449                 printf("%s\n", name);
1450                 return 0;
1451         }
1452
1453         n = ellipsize(name, max_len-len, 100);
1454         if (!n)
1455                 return log_oom();
1456
1457         printf("%s\n", n);
1458         return 0;
1459 }
1460
1461 static int list_dependencies_get_dependencies(sd_bus *bus, const char *name, char ***deps) {
1462
1463         static const char *dependencies[_DEPENDENCY_MAX] = {
1464                 [DEPENDENCY_FORWARD] = "Requires\0"
1465                                        "RequiresOverridable\0"
1466                                        "Requisite\0"
1467                                        "RequisiteOverridable\0"
1468                                        "Wants\0",
1469                 [DEPENDENCY_REVERSE] = "RequiredBy\0"
1470                                        "RequiredByOverridable\0"
1471                                        "WantedBy\0"
1472                                        "PartOf\0",
1473                 [DEPENDENCY_AFTER]   = "After\0",
1474                 [DEPENDENCY_BEFORE]  = "Before\0",
1475         };
1476
1477         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1478         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1479         _cleanup_strv_free_ char **ret = NULL;
1480         _cleanup_free_ char *path = NULL;
1481         int r;
1482
1483         assert(bus);
1484         assert(name);
1485         assert(deps);
1486         assert_cc(ELEMENTSOF(dependencies) == _DEPENDENCY_MAX);
1487
1488         path = unit_dbus_path_from_name(name);
1489         if (!path)
1490                 return log_oom();
1491
1492         r = sd_bus_call_method(
1493                         bus,
1494                         "org.freedesktop.systemd1",
1495                         path,
1496                         "org.freedesktop.DBus.Properties",
1497                         "GetAll",
1498                         &error,
1499                         &reply,
1500                         "s", "org.freedesktop.systemd1.Unit");
1501         if (r < 0) {
1502                 log_error("Failed to get properties of %s: %s", name, bus_error_message(&error, r));
1503                 return r;
1504         }
1505
1506         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "{sv}");
1507         if (r < 0)
1508                 return bus_log_parse_error(r);
1509
1510         while ((r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) {
1511                 const char *prop;
1512
1513                 r = sd_bus_message_read(reply, "s", &prop);
1514                 if (r < 0)
1515                         return bus_log_parse_error(r);
1516
1517                 if (!nulstr_contains(dependencies[arg_dependency], prop)) {
1518                         r = sd_bus_message_skip(reply, "v");
1519                         if (r < 0)
1520                                 return bus_log_parse_error(r);
1521                 } else {
1522
1523                         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_VARIANT, "as");
1524                         if (r < 0)
1525                                 return bus_log_parse_error(r);
1526
1527                         r = bus_message_read_strv_extend(reply, &ret);
1528                         if (r < 0)
1529                                 return bus_log_parse_error(r);
1530
1531                         r = sd_bus_message_exit_container(reply);
1532                         if (r < 0)
1533                                 return bus_log_parse_error(r);
1534                 }
1535
1536                 r = sd_bus_message_exit_container(reply);
1537                 if (r < 0)
1538                         return bus_log_parse_error(r);
1539
1540         }
1541         if (r < 0)
1542                 return bus_log_parse_error(r);
1543
1544         r = sd_bus_message_exit_container(reply);
1545         if (r < 0)
1546                 return bus_log_parse_error(r);
1547
1548         *deps = ret;
1549         ret = NULL;
1550
1551         return 0;
1552 }
1553
1554 static int list_dependencies_compare(const void *_a, const void *_b) {
1555         const char **a = (const char**) _a, **b = (const char**) _b;
1556
1557         if (unit_name_to_type(*a) == UNIT_TARGET && unit_name_to_type(*b) != UNIT_TARGET)
1558                 return 1;
1559         if (unit_name_to_type(*a) != UNIT_TARGET && unit_name_to_type(*b) == UNIT_TARGET)
1560                 return -1;
1561
1562         return strcasecmp(*a, *b);
1563 }
1564
1565 static int list_dependencies_one(
1566                 sd_bus *bus,
1567                 const char *name,
1568                 int level,
1569                 char ***units,
1570                 unsigned int branches) {
1571
1572         _cleanup_strv_free_ char **deps = NULL;
1573         char **c;
1574         int r = 0;
1575
1576         assert(bus);
1577         assert(name);
1578         assert(units);
1579
1580         r = strv_extend(units, name);
1581         if (r < 0)
1582                 return log_oom();
1583
1584         r = list_dependencies_get_dependencies(bus, name, &deps);
1585         if (r < 0)
1586                 return r;
1587
1588         qsort_safe(deps, strv_length(deps), sizeof (char*), list_dependencies_compare);
1589
1590         STRV_FOREACH(c, deps) {
1591                 int state;
1592
1593                 if (strv_contains(*units, *c)) {
1594                         if (!arg_plain) {
1595                                 r = list_dependencies_print("...", level + 1, (branches << 1) | (c[1] == NULL ? 0 : 1), 1);
1596                                 if (r < 0)
1597                                         return r;
1598                         }
1599                         continue;
1600                 }
1601
1602                 state = check_one_unit(bus, *c, "activating\0active\0reloading\0", true);
1603                 if (state > 0)
1604                         printf("%s%s%s ", ansi_highlight_green(), draw_special_char(DRAW_BLACK_CIRCLE), ansi_highlight_off());
1605                 else
1606                         printf("%s%s%s ", ansi_highlight_red(), draw_special_char(DRAW_BLACK_CIRCLE), ansi_highlight_off());
1607
1608                 r = list_dependencies_print(*c, level, branches, c[1] == NULL);
1609                 if (r < 0)
1610                         return r;
1611
1612                 if (arg_all || unit_name_to_type(*c) == UNIT_TARGET) {
1613                        r = list_dependencies_one(bus, *c, level + 1, units, (branches << 1) | (c[1] == NULL ? 0 : 1));
1614                        if (r < 0)
1615                                return r;
1616                 }
1617         }
1618
1619         if (!arg_plain)
1620                 strv_remove(*units, name);
1621
1622         return 0;
1623 }
1624
1625 static int list_dependencies(sd_bus *bus, char **args) {
1626         _cleanup_strv_free_ char **units = NULL;
1627         _cleanup_free_ char *unit = NULL;
1628         const char *u;
1629
1630         assert(bus);
1631
1632         if (args[1]) {
1633                 unit = unit_name_mangle(args[1], MANGLE_NOGLOB);
1634                 if (!unit)
1635                         return log_oom();
1636                 u = unit;
1637         } else
1638                 u = SPECIAL_DEFAULT_TARGET;
1639
1640         pager_open_if_enabled();
1641
1642         puts(u);
1643
1644         return list_dependencies_one(bus, u, 0, &units, 0);
1645 }
1646
1647 struct machine_info {
1648         bool is_host;
1649         char *name;
1650         char *state;
1651         char *control_group;
1652         uint32_t n_failed_units;
1653         uint32_t n_jobs;
1654         usec_t timestamp;
1655 };
1656
1657 static const struct bus_properties_map machine_info_property_map[] = {
1658         { "SystemState",        "s", NULL, offsetof(struct machine_info, state)          },
1659         { "NJobs",              "u", NULL, offsetof(struct machine_info, n_jobs)         },
1660         { "NFailedUnits",       "u", NULL, offsetof(struct machine_info, n_failed_units) },
1661         { "ControlGroup",       "s", NULL, offsetof(struct machine_info, control_group)  },
1662         { "UserspaceTimestamp", "t", NULL, offsetof(struct machine_info, timestamp)      },
1663         {}
1664 };
1665
1666 static void free_machines_list(struct machine_info *machine_infos, int n) {
1667         int i;
1668
1669         if (!machine_infos)
1670                 return;
1671
1672         for (i = 0; i < n; i++) {
1673                 free(machine_infos[i].name);
1674                 free(machine_infos[i].state);
1675                 free(machine_infos[i].control_group);
1676         }
1677
1678         free(machine_infos);
1679 }
1680
1681 static int compare_machine_info(const void *a, const void *b) {
1682         const struct machine_info *u = a, *v = b;
1683
1684         if (u->is_host != v->is_host)
1685                 return u->is_host > v->is_host ? -1 : 1;
1686
1687         return strcasecmp(u->name, v->name);
1688 }
1689
1690 static int get_machine_properties(sd_bus *bus, struct machine_info *mi) {
1691         _cleanup_bus_close_unref_ sd_bus *container = NULL;
1692         int r;
1693
1694         assert(mi);
1695
1696         if (!bus) {
1697                 r = sd_bus_open_system_container(&container, mi->name);
1698                 if (r < 0)
1699                         return r;
1700
1701                 bus = container;
1702         }
1703
1704         r = bus_map_all_properties(bus, "org.freedesktop.systemd1", "/org/freedesktop/systemd1", machine_info_property_map, mi);
1705         if (r < 0)
1706                 return r;
1707
1708         return 0;
1709 }
1710
1711 static bool output_show_machine(const char *name, char **patterns) {
1712         char **i;
1713
1714         assert(name);
1715
1716         if (strv_isempty(patterns))
1717                 return true;
1718
1719         STRV_FOREACH(i, patterns)
1720                 if (fnmatch(*i, name, FNM_NOESCAPE) == 0)
1721                         return true;
1722
1723         return false;
1724 }
1725
1726 static int get_machine_list(
1727                 sd_bus *bus,
1728                 struct machine_info **_machine_infos,
1729                 char **patterns) {
1730
1731         struct machine_info *machine_infos = NULL;
1732         _cleanup_strv_free_ char **m = NULL;
1733         _cleanup_free_ char *hn = NULL;
1734         size_t sz = 0;
1735         char **i;
1736         int c = 0;
1737
1738         hn = gethostname_malloc();
1739         if (!hn)
1740                 return log_oom();
1741
1742         if (output_show_machine(hn, patterns)) {
1743                 if (!GREEDY_REALLOC0(machine_infos, sz, c+1))
1744                         return log_oom();
1745
1746                 machine_infos[c].is_host = true;
1747                 machine_infos[c].name = hn;
1748                 hn = NULL;
1749
1750                 get_machine_properties(bus, &machine_infos[c]);
1751                 c++;
1752         }
1753
1754         sd_get_machine_names(&m);
1755         STRV_FOREACH(i, m) {
1756                 _cleanup_free_ char *class = NULL;
1757
1758                 if (!output_show_machine(*i, patterns))
1759                         continue;
1760
1761                 sd_machine_get_class(*i, &class);
1762                 if (!streq_ptr(class, "container"))
1763                         continue;
1764
1765                 if (!GREEDY_REALLOC0(machine_infos, sz, c+1)) {
1766                         free_machines_list(machine_infos, c);
1767                         return log_oom();
1768                 }
1769
1770                 machine_infos[c].is_host = false;
1771                 machine_infos[c].name = strdup(*i);
1772                 if (!machine_infos[c].name) {
1773                         free_machines_list(machine_infos, c);
1774                         return log_oom();
1775                 }
1776
1777                 get_machine_properties(NULL, &machine_infos[c]);
1778                 c++;
1779         }
1780
1781         *_machine_infos = machine_infos;
1782         return c;
1783 }
1784
1785 static void output_machines_list(struct machine_info *machine_infos, unsigned n) {
1786         struct machine_info *m;
1787         unsigned
1788                 circle_len = 0,
1789                 namelen = sizeof("NAME") - 1,
1790                 statelen = sizeof("STATE") - 1,
1791                 failedlen = sizeof("FAILED") - 1,
1792                 jobslen = sizeof("JOBS") - 1;
1793
1794         assert(machine_infos || n == 0);
1795
1796         for (m = machine_infos; m < machine_infos + n; m++) {
1797                 namelen = MAX(namelen, strlen(m->name) + (m->is_host ? sizeof(" (host)") - 1 : 0));
1798                 statelen = MAX(statelen, m->state ? strlen(m->state) : 0);
1799                 failedlen = MAX(failedlen, DECIMAL_STR_WIDTH(m->n_failed_units));
1800                 jobslen = MAX(jobslen, DECIMAL_STR_WIDTH(m->n_jobs));
1801
1802                 if (!arg_no_legend && !streq_ptr(m->state, "running"))
1803                         circle_len = 2;
1804         }
1805
1806         if (!arg_no_legend) {
1807                 if (circle_len > 0)
1808                         fputs("  ", stdout);
1809
1810                 printf("%-*s %-*s %-*s %-*s\n",
1811                          namelen, "NAME",
1812                         statelen, "STATE",
1813                        failedlen, "FAILED",
1814                          jobslen, "JOBS");
1815         }
1816
1817         for (m = machine_infos; m < machine_infos + n; m++) {
1818                 const char *on_state = "", *off_state = "";
1819                 const char *on_failed = "", *off_failed = "";
1820                 bool circle = false;
1821
1822                 if (streq_ptr(m->state, "degraded")) {
1823                         on_state = ansi_highlight_red();
1824                         off_state = ansi_highlight_off();
1825                         circle = true;
1826                 } else if (!streq_ptr(m->state, "running")) {
1827                         on_state = ansi_highlight_yellow();
1828                         off_state = ansi_highlight_off();
1829                         circle = true;
1830                 }
1831
1832                 if (m->n_failed_units > 0) {
1833                         on_failed = ansi_highlight_red();
1834                         off_failed = ansi_highlight_off();
1835                 } else
1836                         on_failed = off_failed = "";
1837
1838                 if (circle_len > 0)
1839                         printf("%s%s%s ", on_state, circle ? draw_special_char(DRAW_BLACK_CIRCLE) : " ", off_state);
1840
1841                 if (m->is_host)
1842                         printf("%-*s (host) %s%-*s%s %s%*u%s %*u\n",
1843                                (int) (namelen - (sizeof(" (host)")-1)), strna(m->name),
1844                                on_state, statelen, strna(m->state), off_state,
1845                                on_failed, failedlen, m->n_failed_units, off_failed,
1846                                jobslen, m->n_jobs);
1847                 else
1848                         printf("%-*s %s%-*s%s %s%*u%s %*u\n",
1849                                namelen, strna(m->name),
1850                                on_state, statelen, strna(m->state), off_state,
1851                                on_failed, failedlen, m->n_failed_units, off_failed,
1852                                jobslen, m->n_jobs);
1853         }
1854
1855         if (!arg_no_legend)
1856                 printf("\n%u machines listed.\n", n);
1857 }
1858
1859 static int list_machines(sd_bus *bus, char **args) {
1860         struct machine_info *machine_infos = NULL;
1861         int r;
1862
1863         assert(bus);
1864
1865         if (geteuid() != 0) {
1866                 log_error("Must be root.");
1867                 return -EPERM;
1868         }
1869
1870         pager_open_if_enabled();
1871
1872         r = get_machine_list(bus, &machine_infos, strv_skip_first(args));
1873         if (r < 0)
1874                 return r;
1875
1876         qsort_safe(machine_infos, r, sizeof(struct machine_info), compare_machine_info);
1877         output_machines_list(machine_infos, r);
1878         free_machines_list(machine_infos, r);
1879
1880         return 0;
1881 }
1882
1883 static int get_default(sd_bus *bus, char **args) {
1884         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1885         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1886         _cleanup_free_ char *_path = NULL;
1887         const char *path;
1888         int r;
1889
1890         if (!bus || avoid_bus()) {
1891                 r = unit_file_get_default(arg_scope, arg_root, &_path);
1892                 if (r < 0) {
1893                         log_error("Failed to get default target: %s", strerror(-r));
1894                         return r;
1895                 }
1896                 path = _path;
1897
1898         } else {
1899                 r = sd_bus_call_method(
1900                                 bus,
1901                                 "org.freedesktop.systemd1",
1902                                 "/org/freedesktop/systemd1",
1903                                 "org.freedesktop.systemd1.Manager",
1904                                 "GetDefaultTarget",
1905                                 &error,
1906                                 &reply,
1907                                 NULL);
1908                 if (r < 0) {
1909                         log_error("Failed to get default target: %s", bus_error_message(&error, -r));
1910                         return r;
1911                 }
1912
1913                 r = sd_bus_message_read(reply, "s", &path);
1914                 if (r < 0)
1915                         return bus_log_parse_error(r);
1916         }
1917
1918         if (path)
1919                 printf("%s\n", path);
1920
1921         return 0;
1922 }
1923
1924 static void dump_unit_file_changes(const UnitFileChange *changes, unsigned n_changes) {
1925         unsigned i;
1926
1927         assert(changes || n_changes == 0);
1928
1929         for (i = 0; i < n_changes; i++) {
1930                 if (changes[i].type == UNIT_FILE_SYMLINK)
1931                         log_info("Created symlink from %s to %s.", changes[i].path, changes[i].source);
1932                 else
1933                         log_info("Removed symlink %s.", changes[i].path);
1934         }
1935 }
1936
1937 static int deserialize_and_dump_unit_file_changes(sd_bus_message *m) {
1938         const char *type, *path, *source;
1939         int r;
1940
1941         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sss)");
1942         if (r < 0)
1943                 return bus_log_parse_error(r);
1944
1945         while ((r = sd_bus_message_read(m, "(sss)", &type, &path, &source)) > 0) {
1946                 if (!arg_quiet) {
1947                         if (streq(type, "symlink"))
1948                                 log_info("Created symlink from %s to %s.", path, source);
1949                         else
1950                                 log_info("Removed symlink %s.", path);
1951                 }
1952         }
1953         if (r < 0)
1954                 return bus_log_parse_error(r);
1955
1956         r = sd_bus_message_exit_container(m);
1957         if (r < 0)
1958                 return bus_log_parse_error(r);
1959
1960         return 0;
1961 }
1962
1963 static int set_default(sd_bus *bus, char **args) {
1964         _cleanup_free_ char *unit = NULL;
1965         UnitFileChange *changes = NULL;
1966         unsigned n_changes = 0;
1967         int r;
1968
1969         unit = unit_name_mangle_with_suffix(args[1], MANGLE_NOGLOB, ".target");
1970         if (!unit)
1971                 return log_oom();
1972
1973         if (!bus || avoid_bus()) {
1974                 r = unit_file_set_default(arg_scope, arg_root, unit, true, &changes, &n_changes);
1975                 if (r < 0) {
1976                         log_error("Failed to set default target: %s", strerror(-r));
1977                         return r;
1978                 }
1979
1980                 if (!arg_quiet)
1981                         dump_unit_file_changes(changes, n_changes);
1982
1983                 r = 0;
1984         } else {
1985                 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1986                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1987
1988                 r = sd_bus_call_method(
1989                                 bus,
1990                                 "org.freedesktop.systemd1",
1991                                 "/org/freedesktop/systemd1",
1992                                 "org.freedesktop.systemd1.Manager",
1993                                 "SetDefaultTarget",
1994                                 &error,
1995                                 &reply,
1996                                 "sb", unit, true);
1997                 if (r < 0) {
1998                         log_error("Failed to set default target: %s", bus_error_message(&error, -r));
1999                         return r;
2000                 }
2001
2002                 r = deserialize_and_dump_unit_file_changes(reply);
2003                 if (r < 0)
2004                         return r;
2005
2006                 /* Try to reload if enabled */
2007                 if (!arg_no_reload)
2008                         r = daemon_reload(bus, args);
2009                 else
2010                         r = 0;
2011         }
2012
2013         unit_file_changes_free(changes, n_changes);
2014
2015         return r;
2016 }
2017
2018 struct job_info {
2019         uint32_t id;
2020         const char *name, *type, *state;
2021 };
2022
2023 static void output_jobs_list(const struct job_info* jobs, unsigned n, bool skipped) {
2024         unsigned id_len, unit_len, type_len, state_len;
2025         const struct job_info *j;
2026         const char *on, *off;
2027         bool shorten = false;
2028
2029         assert(n == 0 || jobs);
2030
2031         if (n == 0) {
2032                 on = ansi_highlight_green();
2033                 off = ansi_highlight_off();
2034
2035                 printf("%sNo jobs %s.%s\n", on, skipped ? "listed" : "running", off);
2036                 return;
2037         }
2038
2039         pager_open_if_enabled();
2040
2041         id_len = strlen("JOB");
2042         unit_len = strlen("UNIT");
2043         type_len = strlen("TYPE");
2044         state_len = strlen("STATE");
2045
2046         for (j = jobs; j < jobs + n; j++) {
2047                 uint32_t id = j->id;
2048                 assert(j->name && j->type && j->state);
2049
2050                 id_len = MAX(id_len, DECIMAL_STR_WIDTH(id));
2051                 unit_len = MAX(unit_len, strlen(j->name));
2052                 type_len = MAX(type_len, strlen(j->type));
2053                 state_len = MAX(state_len, strlen(j->state));
2054         }
2055
2056         if (!arg_full && id_len + 1 + unit_len + type_len + 1 + state_len > columns()) {
2057                 unit_len = MAX(33u, columns() - id_len - type_len - state_len - 3);
2058                 shorten = true;
2059         }
2060
2061         if (!arg_no_legend)
2062                 printf("%*s %-*s %-*s %-*s\n",
2063                        id_len, "JOB",
2064                        unit_len, "UNIT",
2065                        type_len, "TYPE",
2066                        state_len, "STATE");
2067
2068         for (j = jobs; j < jobs + n; j++) {
2069                 _cleanup_free_ char *e = NULL;
2070
2071                 if (streq(j->state, "running")) {
2072                         on = ansi_highlight();
2073                         off = ansi_highlight_off();
2074                 } else
2075                         on = off = "";
2076
2077                 e = shorten ? ellipsize(j->name, unit_len, 33) : NULL;
2078                 printf("%*u %s%-*s%s %-*s %s%-*s%s\n",
2079                        id_len, j->id,
2080                        on, unit_len, e ? e : j->name, off,
2081                        type_len, j->type,
2082                        on, state_len, j->state, off);
2083         }
2084
2085         if (!arg_no_legend) {
2086                 on = ansi_highlight();
2087                 off = ansi_highlight_off();
2088
2089                 printf("\n%s%u jobs listed%s.\n", on, n, off);
2090         }
2091 }
2092
2093 static bool output_show_job(struct job_info *job, char **patterns) {
2094         char **pattern;
2095
2096         assert(job);
2097
2098         if (strv_isempty(patterns))
2099                 return true;
2100
2101         STRV_FOREACH(pattern, patterns)
2102                 if (fnmatch(*pattern, job->name, FNM_NOESCAPE) == 0)
2103                         return true;
2104         return false;
2105 }
2106
2107 static int list_jobs(sd_bus *bus, char **args) {
2108         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2109         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2110         const char *name, *type, *state, *job_path, *unit_path;
2111         _cleanup_free_ struct job_info *jobs = NULL;
2112         size_t size = 0;
2113         unsigned c = 0;
2114         uint32_t id;
2115         int r;
2116         bool skipped = false;
2117
2118         r = sd_bus_call_method(
2119                         bus,
2120                         "org.freedesktop.systemd1",
2121                         "/org/freedesktop/systemd1",
2122                         "org.freedesktop.systemd1.Manager",
2123                         "ListJobs",
2124                         &error,
2125                         &reply,
2126                         NULL);
2127         if (r < 0) {
2128                 log_error("Failed to list jobs: %s", bus_error_message(&error, r));
2129                 return r;
2130         }
2131
2132         r = sd_bus_message_enter_container(reply, 'a', "(usssoo)");
2133         if (r < 0)
2134                 return bus_log_parse_error(r);
2135
2136         while ((r = sd_bus_message_read(reply, "(usssoo)", &id, &name, &type, &state, &job_path, &unit_path)) > 0) {
2137                 struct job_info job = { id, name, type, state };
2138
2139                 if (!output_show_job(&job, strv_skip_first(args))) {
2140                         skipped = true;
2141                         continue;
2142                 }
2143
2144                 if (!GREEDY_REALLOC(jobs, size, c + 1))
2145                         return log_oom();
2146
2147                 jobs[c++] = job;
2148         }
2149         if (r < 0)
2150                 return bus_log_parse_error(r);
2151
2152         r = sd_bus_message_exit_container(reply);
2153         if (r < 0)
2154                 return bus_log_parse_error(r);
2155
2156         output_jobs_list(jobs, c, skipped);
2157         return r;
2158 }
2159
2160 static int cancel_job(sd_bus *bus, char **args) {
2161         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2162         char **name;
2163
2164         assert(args);
2165
2166         if (strv_length(args) <= 1)
2167                 return daemon_reload(bus, args);
2168
2169         STRV_FOREACH(name, args+1) {
2170                 uint32_t id;
2171                 int r;
2172
2173                 r = safe_atou32(*name, &id);
2174                 if (r < 0) {
2175                         log_error("Failed to parse job id \"%s\": %s", *name, strerror(-r));
2176                         return r;
2177                 }
2178
2179                 r = sd_bus_call_method(
2180                                 bus,
2181                                 "org.freedesktop.systemd1",
2182                                 "/org/freedesktop/systemd1",
2183                                 "org.freedesktop.systemd1.Manager",
2184                                 "CancelJob",
2185                                 &error,
2186                                 NULL,
2187                                 "u", id);
2188                 if (r < 0) {
2189                         log_error("Failed to cancel job %u: %s", (unsigned) id, bus_error_message(&error, r));
2190                         return r;
2191                 }
2192         }
2193
2194         return 0;
2195 }
2196
2197 static int need_daemon_reload(sd_bus *bus, const char *unit) {
2198         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2199         const char *path;
2200         int b, r;
2201
2202         /* We ignore all errors here, since this is used to show a
2203          * warning only */
2204
2205         /* We don't use unit_dbus_path_from_name() directly since we
2206          * don't want to load the unit if it isn't loaded. */
2207
2208         r = sd_bus_call_method(
2209                         bus,
2210                         "org.freedesktop.systemd1",
2211                         "/org/freedesktop/systemd1",
2212                         "org.freedesktop.systemd1.Manager",
2213                         "GetUnit",
2214                         NULL,
2215                         &reply,
2216                         "s", unit);
2217         if (r < 0)
2218                 return r;
2219
2220         r = sd_bus_message_read(reply, "o", &path);
2221         if (r < 0)
2222                 return r;
2223
2224         r = sd_bus_get_property_trivial(
2225                         bus,
2226                         "org.freedesktop.systemd1",
2227                         path,
2228                         "org.freedesktop.systemd1.Unit",
2229                         "NeedDaemonReload",
2230                         NULL,
2231                         'b', &b);
2232         if (r < 0)
2233                 return r;
2234
2235         return b;
2236 }
2237
2238 typedef struct WaitData {
2239         Set *set;
2240
2241         char *name;
2242         char *result;
2243 } WaitData;
2244
2245 static int wait_filter(sd_bus *bus, sd_bus_message *m, void *data, sd_bus_error *error) {
2246         WaitData *d = data;
2247
2248         assert(bus);
2249         assert(m);
2250         assert(d);
2251
2252         log_debug("Got D-Bus request: %s.%s() on %s",
2253                   sd_bus_message_get_interface(m),
2254                   sd_bus_message_get_member(m),
2255                   sd_bus_message_get_path(m));
2256
2257         if (sd_bus_message_is_signal(m, "org.freedesktop.DBus.Local", "Disconnected")) {
2258                 log_error("Warning! D-Bus connection terminated.");
2259                 sd_bus_close(bus);
2260         } else if (sd_bus_message_is_signal(m, "org.freedesktop.systemd1.Manager", "JobRemoved")) {
2261                 uint32_t id;
2262                 const char *path, *result, *unit;
2263                 char *ret;
2264                 int r;
2265
2266                 r = sd_bus_message_read(m, "uoss", &id, &path, &unit, &result);
2267                 if (r >= 0) {
2268                         ret = set_remove(d->set, (char*) path);
2269                         if (!ret)
2270                                 return 0;
2271
2272                         free(ret);
2273
2274                         if (!isempty(result))
2275                                 d->result = strdup(result);
2276
2277                         if (!isempty(unit))
2278                                 d->name = strdup(unit);
2279
2280                         return 0;
2281                 }
2282 #ifndef NOLEGACY
2283                 r = sd_bus_message_read(m, "uos", &id, &path, &result);
2284                 if (r >= 0) {
2285                         ret = set_remove(d->set, (char*) path);
2286                         if (!ret)
2287                                 return 0;
2288
2289                         free(ret);
2290
2291                         if (*result)
2292                                 d->result = strdup(result);
2293
2294                         return 0;
2295                 }
2296 #endif
2297
2298                 bus_log_parse_error(r);
2299         }
2300
2301         return 0;
2302 }
2303
2304 static int enable_wait_for_jobs(sd_bus *bus) {
2305         int r;
2306
2307         assert(bus);
2308
2309         r = sd_bus_add_match(
2310                         bus,
2311                         NULL,
2312                         "type='signal',"
2313                         "sender='org.freedesktop.systemd1',"
2314                         "interface='org.freedesktop.systemd1.Manager',"
2315                         "member='JobRemoved',"
2316                         "path='/org/freedesktop/systemd1'",
2317                         NULL, NULL);
2318         if (r < 0) {
2319                 log_error("Failed to add match");
2320                 return -EIO;
2321         }
2322
2323         /* This is slightly dirty, since we don't undo the match registrations. */
2324         return 0;
2325 }
2326
2327 static int bus_process_wait(sd_bus *bus) {
2328         int r;
2329
2330         for (;;) {
2331                 r = sd_bus_process(bus, NULL);
2332                 if (r < 0)
2333                         return r;
2334                 if (r > 0)
2335                         return 0;
2336                 r = sd_bus_wait(bus, (uint64_t) -1);
2337                 if (r < 0)
2338                         return r;
2339         }
2340 }
2341
2342 static int check_wait_response(WaitData *d) {
2343         int r = 0;
2344
2345         assert(d->result);
2346
2347         if (!arg_quiet) {
2348                 if (streq(d->result, "timeout"))
2349                         log_error("Job for %s timed out.", strna(d->name));
2350                 else if (streq(d->result, "canceled"))
2351                         log_error("Job for %s canceled.", strna(d->name));
2352                 else if (streq(d->result, "dependency"))
2353                         log_error("A dependency job for %s failed. See 'journalctl -xn' for details.", strna(d->name));
2354                 else if (!streq(d->result, "done") && !streq(d->result, "skipped")) {
2355                         if (d->name) {
2356                                 bool quotes;
2357
2358                                 quotes = chars_intersect(d->name, SHELL_NEED_QUOTES);
2359
2360                                 log_error("Job for %s failed. See \"systemctl status %s%s%s\" and \"journalctl -xn\" for details.",
2361                                           d->name,
2362                                           quotes ? "'" : "", d->name, quotes ? "'" : "");
2363                         } else
2364                                 log_error("Job failed. See \"journalctl -xn\" for details.");
2365                 }
2366         }
2367
2368         if (streq(d->result, "timeout"))
2369                 r = -ETIME;
2370         else if (streq(d->result, "canceled"))
2371                 r = -ECANCELED;
2372         else if (streq(d->result, "dependency"))
2373                 r = -EIO;
2374         else if (!streq(d->result, "done") && !streq(d->result, "skipped"))
2375                 r = -EIO;
2376
2377         return r;
2378 }
2379
2380 static int wait_for_jobs(sd_bus *bus, Set *s) {
2381         _cleanup_bus_slot_unref_ sd_bus_slot *slot = NULL;
2382         WaitData d = { .set = s };
2383         int r = 0, q;
2384
2385         assert(bus);
2386         assert(s);
2387
2388         q = sd_bus_add_filter(bus, &slot, wait_filter, &d);
2389         if (q < 0)
2390                 return log_oom();
2391
2392         while (!set_isempty(s)) {
2393                 q = bus_process_wait(bus);
2394                 if (q < 0) {
2395                         log_error("Failed to wait for response: %s", strerror(-q));
2396                         return q;
2397                 }
2398
2399                 if (d.result) {
2400                         q = check_wait_response(&d);
2401                         /* Return the first error as it is most likely to be
2402                          * meaningful. */
2403                         if (q < 0 && r == 0)
2404                                 r = q;
2405                         log_debug("Got result %s/%s for job %s",
2406                                   strna(d.result), strerror(-q), strna(d.name));
2407                 }
2408
2409                 free(d.name);
2410                 d.name = NULL;
2411
2412                 free(d.result);
2413                 d.result = NULL;
2414         }
2415
2416         return r;
2417 }
2418
2419 static int check_one_unit(sd_bus *bus, const char *name, const char *good_states, bool quiet) {
2420         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2421         _cleanup_free_ char *n = NULL, *state = NULL;
2422         const char *path;
2423         int r;
2424
2425         assert(name);
2426
2427         n = unit_name_mangle(name, MANGLE_NOGLOB);
2428         if (!n)
2429                 return log_oom();
2430
2431         /* We don't use unit_dbus_path_from_name() directly since we
2432          * don't want to load the unit if it isn't loaded. */
2433
2434         r = sd_bus_call_method(
2435                         bus,
2436                         "org.freedesktop.systemd1",
2437                         "/org/freedesktop/systemd1",
2438                         "org.freedesktop.systemd1.Manager",
2439                         "GetUnit",
2440                         NULL,
2441                         &reply,
2442                         "s", n);
2443         if (r < 0) {
2444                 if (!quiet)
2445                         puts("unknown");
2446                 return 0;
2447         }
2448
2449         r = sd_bus_message_read(reply, "o", &path);
2450         if (r < 0)
2451                 return bus_log_parse_error(r);
2452
2453         r = sd_bus_get_property_string(
2454                         bus,
2455                         "org.freedesktop.systemd1",
2456                         path,
2457                         "org.freedesktop.systemd1.Unit",
2458                         "ActiveState",
2459                         NULL,
2460                         &state);
2461         if (r < 0) {
2462                 if (!quiet)
2463                         puts("unknown");
2464                 return 0;
2465         }
2466
2467         if (!quiet)
2468                 puts(state);
2469
2470         return nulstr_contains(good_states, state);
2471 }
2472
2473 static int check_triggering_units(
2474                 sd_bus *bus,
2475                 const char *name) {
2476
2477         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2478         _cleanup_free_ char *path = NULL, *n = NULL, *state = NULL;
2479         _cleanup_strv_free_ char **triggered_by = NULL;
2480         bool print_warning_label = true;
2481         char **i;
2482         int r;
2483
2484         n = unit_name_mangle(name, MANGLE_NOGLOB);
2485         if (!n)
2486                 return log_oom();
2487
2488         path = unit_dbus_path_from_name(n);
2489         if (!path)
2490                 return log_oom();
2491
2492         r = sd_bus_get_property_string(
2493                         bus,
2494                         "org.freedesktop.systemd1",
2495                         path,
2496                         "org.freedesktop.systemd1.Unit",
2497                         "LoadState",
2498                         &error,
2499                         &state);
2500         if (r < 0) {
2501                 log_error("Failed to get load state of %s: %s", n, bus_error_message(&error, r));
2502                 return r;
2503         }
2504
2505         if (streq(state, "masked"))
2506                 return 0;
2507
2508         r = sd_bus_get_property_strv(
2509                         bus,
2510                         "org.freedesktop.systemd1",
2511                         path,
2512                         "org.freedesktop.systemd1.Unit",
2513                         "TriggeredBy",
2514                         &error,
2515                         &triggered_by);
2516         if (r < 0) {
2517                 log_error("Failed to get triggered by array of %s: %s", n, bus_error_message(&error, r));
2518                 return r;
2519         }
2520
2521         STRV_FOREACH(i, triggered_by) {
2522                 r = check_one_unit(bus, *i, "active\0reloading\0", true);
2523                 if (r < 0) {
2524                         log_error("Failed to check unit: %s", strerror(-r));
2525                         return r;
2526                 }
2527
2528                 if (r == 0)
2529                         continue;
2530
2531                 if (print_warning_label) {
2532                         log_warning("Warning: Stopping %s, but it can still be activated by:", n);
2533                         print_warning_label = false;
2534                 }
2535
2536                 log_warning("  %s", *i);
2537         }
2538
2539         return 0;
2540 }
2541
2542 static const char *verb_to_method(const char *verb) {
2543        uint i;
2544
2545        for (i = 0; i < ELEMENTSOF(unit_actions); i++)
2546                 if (streq_ptr(unit_actions[i].verb, verb))
2547                         return unit_actions[i].method;
2548
2549        return "StartUnit";
2550 }
2551
2552 static const char *method_to_verb(const char *method) {
2553        uint i;
2554
2555        for (i = 0; i < ELEMENTSOF(unit_actions); i++)
2556                 if (streq_ptr(unit_actions[i].method, method))
2557                         return unit_actions[i].verb;
2558
2559        return "n/a";
2560 }
2561
2562 static int start_unit_one(
2563                 sd_bus *bus,
2564                 const char *method,
2565                 const char *name,
2566                 const char *mode,
2567                 sd_bus_error *error,
2568                 Set *s) {
2569
2570         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2571         const char *path;
2572         int r;
2573
2574         assert(method);
2575         assert(name);
2576         assert(mode);
2577         assert(error);
2578
2579         log_debug("Calling manager for %s on %s, %s", method, name, mode);
2580         r = sd_bus_call_method(
2581                         bus,
2582                         "org.freedesktop.systemd1",
2583                         "/org/freedesktop/systemd1",
2584                         "org.freedesktop.systemd1.Manager",
2585                         method,
2586                         error,
2587                         &reply,
2588                         "ss", name, mode);
2589         if (r < 0) {
2590                 const char *verb;
2591
2592                 if (r == -ENOENT && arg_action != ACTION_SYSTEMCTL)
2593                         /* There's always a fallback possible for
2594                          * legacy actions. */
2595                         return -EADDRNOTAVAIL;
2596
2597                 verb = method_to_verb(method);
2598
2599                 log_error("Failed to %s %s: %s", verb, name, bus_error_message(error, r));
2600                 return r;
2601         }
2602
2603         r = sd_bus_message_read(reply, "o", &path);
2604         if (r < 0)
2605                 return bus_log_parse_error(r);
2606
2607         if (need_daemon_reload(bus, name) > 0)
2608                 log_warning("Warning: Unit file of %s changed on disk, 'systemctl%s daemon-reload' recommended.",
2609                             name, arg_scope == UNIT_FILE_SYSTEM ? "" : " --user");
2610
2611         if (s) {
2612                 char *p;
2613
2614                 p = strdup(path);
2615                 if (!p)
2616                         return log_oom();
2617
2618                 log_debug("Adding %s to the set", p);
2619                 r = set_consume(s, p);
2620                 if (r < 0)
2621                         return log_oom();
2622         }
2623
2624         return 0;
2625 }
2626
2627 static int expand_names(sd_bus *bus, char **names, const char* suffix, char ***ret) {
2628
2629         _cleanup_strv_free_ char **mangled = NULL, **globs = NULL;
2630         char **name;
2631         int r = 0, i;
2632
2633         STRV_FOREACH(name, names) {
2634                 char *t;
2635
2636                 if (suffix)
2637                         t = unit_name_mangle_with_suffix(*name, MANGLE_GLOB, suffix);
2638                 else
2639                         t = unit_name_mangle(*name, MANGLE_GLOB);
2640                 if (!t)
2641                         return log_oom();
2642
2643                 if (string_is_glob(t))
2644                         r = strv_consume(&globs, t);
2645                 else
2646                         r = strv_consume(&mangled, t);
2647                 if (r < 0)
2648                         return log_oom();
2649         }
2650
2651         /* Query the manager only if any of the names are a glob, since
2652          * this is fairly expensive */
2653         if (!strv_isempty(globs)) {
2654                 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2655                 _cleanup_free_ UnitInfo *unit_infos = NULL;
2656
2657                 r = get_unit_list(bus, NULL, globs, &unit_infos, 0, &reply);
2658                 if (r < 0)
2659                         return r;
2660
2661                 for (i = 0; i < r; i++)
2662                         if (strv_extend(&mangled, unit_infos[i].id) < 0)
2663                                 return log_oom();
2664         }
2665
2666         *ret = mangled;
2667         mangled = NULL; /* do not free */
2668
2669         return 0;
2670 }
2671
2672 static const struct {
2673         const char *target;
2674         const char *verb;
2675         const char *mode;
2676 } action_table[_ACTION_MAX] = {
2677         [ACTION_HALT]         = { SPECIAL_HALT_TARGET,         "halt",         "replace-irreversibly" },
2678         [ACTION_POWEROFF]     = { SPECIAL_POWEROFF_TARGET,     "poweroff",     "replace-irreversibly" },
2679         [ACTION_REBOOT]       = { SPECIAL_REBOOT_TARGET,       "reboot",       "replace-irreversibly" },
2680         [ACTION_KEXEC]        = { SPECIAL_KEXEC_TARGET,        "kexec",        "replace-irreversibly" },
2681         [ACTION_RUNLEVEL2]    = { SPECIAL_RUNLEVEL2_TARGET,    NULL,           "isolate" },
2682         [ACTION_RUNLEVEL3]    = { SPECIAL_RUNLEVEL3_TARGET,    NULL,           "isolate" },
2683         [ACTION_RUNLEVEL4]    = { SPECIAL_RUNLEVEL4_TARGET,    NULL,           "isolate" },
2684         [ACTION_RUNLEVEL5]    = { SPECIAL_RUNLEVEL5_TARGET,    NULL,           "isolate" },
2685         [ACTION_RESCUE]       = { SPECIAL_RESCUE_TARGET,       "rescue",       "isolate" },
2686         [ACTION_EMERGENCY]    = { SPECIAL_EMERGENCY_TARGET,    "emergency",    "isolate" },
2687         [ACTION_DEFAULT]      = { SPECIAL_DEFAULT_TARGET,      "default",      "isolate" },
2688         [ACTION_EXIT]         = { SPECIAL_EXIT_TARGET,         "exit",         "replace-irreversibly" },
2689         [ACTION_SUSPEND]      = { SPECIAL_SUSPEND_TARGET,      "suspend",      "replace-irreversibly" },
2690         [ACTION_HIBERNATE]    = { SPECIAL_HIBERNATE_TARGET,    "hibernate",    "replace-irreversibly" },
2691         [ACTION_HYBRID_SLEEP] = { SPECIAL_HYBRID_SLEEP_TARGET, "hybrid-sleep", "replace-irreversibly" },
2692 };
2693
2694 static enum action verb_to_action(const char *verb) {
2695         enum action i;
2696
2697         for (i = _ACTION_INVALID; i < _ACTION_MAX; i++)
2698                 if (streq_ptr(action_table[i].verb, verb))
2699                         return i;
2700
2701         return _ACTION_INVALID;
2702 }
2703
2704 static int start_unit(sd_bus *bus, char **args) {
2705         _cleanup_set_free_free_ Set *s = NULL;
2706         _cleanup_strv_free_ char **names = NULL;
2707         const char *method, *mode, *one_name;
2708         char **name;
2709         int r = 0;
2710
2711         assert(bus);
2712
2713         ask_password_agent_open_if_enabled();
2714
2715         if (arg_action == ACTION_SYSTEMCTL) {
2716                 enum action action;
2717                 method = verb_to_method(args[0]);
2718                 action = verb_to_action(args[0]);
2719
2720                 mode = streq(args[0], "isolate") ? "isolate" :
2721                        action_table[action].mode ?: arg_job_mode;
2722
2723                 one_name = action_table[action].target;
2724         } else {
2725                 assert(arg_action < ELEMENTSOF(action_table));
2726                 assert(action_table[arg_action].target);
2727
2728                 method = "StartUnit";
2729
2730                 mode = action_table[arg_action].mode;
2731                 one_name = action_table[arg_action].target;
2732         }
2733
2734         if (one_name)
2735                 names = strv_new(one_name, NULL);
2736         else {
2737                 r = expand_names(bus, args + 1, NULL, &names);
2738                 if (r < 0)
2739                         log_error("Failed to expand names: %s", strerror(-r));
2740         }
2741
2742         if (!arg_no_block) {
2743                 r = enable_wait_for_jobs(bus);
2744                 if (r < 0) {
2745                         log_error("Could not watch jobs: %s", strerror(-r));
2746                         return r;
2747                 }
2748
2749                 s = set_new(&string_hash_ops);
2750                 if (!s)
2751                         return log_oom();
2752         }
2753
2754         STRV_FOREACH(name, names) {
2755                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2756                 int q;
2757
2758                 q = start_unit_one(bus, method, *name, mode, &error, s);
2759                 if (r >= 0 && q < 0)
2760                         r = translate_bus_error_to_exit_status(q, &error);
2761         }
2762
2763         if (!arg_no_block) {
2764                 int q;
2765
2766                 q = wait_for_jobs(bus, s);
2767                 if (q < 0)
2768                         return q;
2769
2770                 /* When stopping units, warn if they can still be triggered by
2771                  * another active unit (socket, path, timer) */
2772                 if (!arg_quiet && streq(method, "StopUnit"))
2773                         STRV_FOREACH(name, names)
2774                                 check_triggering_units(bus, *name);
2775         }
2776
2777         return r;
2778 }
2779
2780 /* Ask systemd-logind, which might grant access to unprivileged users
2781  * through PolicyKit */
2782 static int reboot_with_logind(sd_bus *bus, enum action a) {
2783 #ifdef HAVE_LOGIND
2784         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2785         const char *method;
2786         int r;
2787
2788         if (!bus)
2789                 return -EIO;
2790
2791         polkit_agent_open_if_enabled();
2792
2793         switch (a) {
2794
2795         case ACTION_REBOOT:
2796                 method = "Reboot";
2797                 break;
2798
2799         case ACTION_POWEROFF:
2800                 method = "PowerOff";
2801                 break;
2802
2803         case ACTION_SUSPEND:
2804                 method = "Suspend";
2805                 break;
2806
2807         case ACTION_HIBERNATE:
2808                 method = "Hibernate";
2809                 break;
2810
2811         case ACTION_HYBRID_SLEEP:
2812                 method = "HybridSleep";
2813                 break;
2814
2815         default:
2816                 return -EINVAL;
2817         }
2818
2819         r = sd_bus_call_method(
2820                         bus,
2821                         "org.freedesktop.login1",
2822                         "/org/freedesktop/login1",
2823                         "org.freedesktop.login1.Manager",
2824                         method,
2825                         &error,
2826                         NULL,
2827                         "b", true);
2828         if (r < 0)
2829                 log_error("Failed to execute operation: %s", bus_error_message(&error, r));
2830
2831         return r;
2832 #else
2833         return -ENOSYS;
2834 #endif
2835 }
2836
2837 static int check_inhibitors(sd_bus *bus, enum action a) {
2838 #ifdef HAVE_LOGIND
2839         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2840         _cleanup_strv_free_ char **sessions = NULL;
2841         const char *what, *who, *why, *mode;
2842         uint32_t uid, pid;
2843         unsigned c = 0;
2844         char **s;
2845         int r;
2846
2847         if (!bus)
2848                 return 0;
2849
2850         if (arg_ignore_inhibitors || arg_force > 0)
2851                 return 0;
2852
2853         if (arg_when > 0)
2854                 return 0;
2855
2856         if (geteuid() == 0)
2857                 return 0;
2858
2859         if (!on_tty())
2860                 return 0;
2861
2862         r = sd_bus_call_method(
2863                         bus,
2864                         "org.freedesktop.login1",
2865                         "/org/freedesktop/login1",
2866                         "org.freedesktop.login1.Manager",
2867                         "ListInhibitors",
2868                         NULL,
2869                         &reply,
2870                         NULL);
2871         if (r < 0)
2872                 /* If logind is not around, then there are no inhibitors... */
2873                 return 0;
2874
2875         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssuu)");
2876         if (r < 0)
2877                 return bus_log_parse_error(r);
2878
2879         while ((r = sd_bus_message_read(reply, "(ssssuu)", &what, &who, &why, &mode, &uid, &pid)) > 0) {
2880                 _cleanup_free_ char *comm = NULL, *user = NULL;
2881                 _cleanup_strv_free_ char **sv = NULL;
2882
2883                 if (!streq(mode, "block"))
2884                         continue;
2885
2886                 sv = strv_split(what, ":");
2887                 if (!sv)
2888                         return log_oom();
2889
2890                 if (!strv_contains(sv,
2891                                   a == ACTION_HALT ||
2892                                   a == ACTION_POWEROFF ||
2893                                   a == ACTION_REBOOT ||
2894                                   a == ACTION_KEXEC ? "shutdown" : "sleep"))
2895                         continue;
2896
2897                 get_process_comm(pid, &comm);
2898                 user = uid_to_name(uid);
2899
2900                 log_warning("Operation inhibited by \"%s\" (PID "PID_FMT" \"%s\", user %s), reason is \"%s\".",
2901                             who, pid, strna(comm), strna(user), why);
2902
2903                 c++;
2904         }
2905         if (r < 0)
2906                 return bus_log_parse_error(r);
2907
2908         r = sd_bus_message_exit_container(reply);
2909         if (r < 0)
2910                 return bus_log_parse_error(r);
2911
2912         /* Check for current sessions */
2913         sd_get_sessions(&sessions);
2914         STRV_FOREACH(s, sessions) {
2915                 _cleanup_free_ char *type = NULL, *tty = NULL, *seat = NULL, *user = NULL, *service = NULL, *class = NULL;
2916
2917                 if (sd_session_get_uid(*s, &uid) < 0 || uid == getuid())
2918                         continue;
2919
2920                 if (sd_session_get_class(*s, &class) < 0 || !streq(class, "user"))
2921                         continue;
2922
2923                 if (sd_session_get_type(*s, &type) < 0 || (!streq(type, "x11") && !streq(type, "tty")))
2924                         continue;
2925
2926                 sd_session_get_tty(*s, &tty);
2927                 sd_session_get_seat(*s, &seat);
2928                 sd_session_get_service(*s, &service);
2929                 user = uid_to_name(uid);
2930
2931                 log_warning("User %s is logged in on %s.", strna(user), isempty(tty) ? (isempty(seat) ? strna(service) : seat) : tty);
2932                 c++;
2933         }
2934
2935         if (c <= 0)
2936                 return 0;
2937
2938         log_error("Please retry operation after closing inhibitors and logging out other users.\nAlternatively, ignore inhibitors and users with 'systemctl %s -i'.",
2939                   action_table[a].verb);
2940
2941         return -EPERM;
2942 #else
2943         return 0;
2944 #endif
2945 }
2946
2947 static int start_special(sd_bus *bus, char **args) {
2948         enum action a;
2949         int r;
2950
2951         assert(args);
2952
2953         a = verb_to_action(args[0]);
2954
2955         r = check_inhibitors(bus, a);
2956         if (r < 0)
2957                 return r;
2958
2959         if (arg_force >= 2 && geteuid() != 0) {
2960                 log_error("Must be root.");
2961                 return -EPERM;
2962         }
2963
2964         if (arg_force >= 2 &&
2965             (a == ACTION_HALT ||
2966              a == ACTION_POWEROFF ||
2967              a == ACTION_REBOOT))
2968                 return halt_now(a);
2969
2970         if (arg_force >= 1 &&
2971             (a == ACTION_HALT ||
2972              a == ACTION_POWEROFF ||
2973              a == ACTION_REBOOT ||
2974              a == ACTION_KEXEC ||
2975              a == ACTION_EXIT))
2976                 return daemon_reload(bus, args);
2977
2978         /* first try logind, to allow authentication with polkit */
2979         if (geteuid() != 0 &&
2980             (a == ACTION_POWEROFF ||
2981              a == ACTION_REBOOT ||
2982              a == ACTION_SUSPEND ||
2983              a == ACTION_HIBERNATE ||
2984              a == ACTION_HYBRID_SLEEP)) {
2985                 r = reboot_with_logind(bus, a);
2986                 if (r >= 0)
2987                         return r;
2988         }
2989
2990         r = start_unit(bus, args);
2991         if (r == EXIT_SUCCESS)
2992                 warn_wall(a);
2993
2994         return r;
2995 }
2996
2997 static int check_unit_generic(sd_bus *bus, int code, const char *good_states, char **args) {
2998         _cleanup_strv_free_ char **names = NULL;
2999         char **name;
3000         int r;
3001
3002         assert(bus);
3003         assert(args);
3004
3005         r = expand_names(bus, args, NULL, &names);
3006         if (r < 0) {
3007                 log_error("Failed to expand names: %s", strerror(-r));
3008                 return r;
3009         }
3010
3011         STRV_FOREACH(name, names) {
3012                 int state;
3013
3014                 state = check_one_unit(bus, *name, good_states, arg_quiet);
3015                 if (state < 0)
3016                         return state;
3017                 if (state == 0)
3018                         r = code;
3019         }
3020
3021         return r;
3022 }
3023
3024 static int check_unit_active(sd_bus *bus, char **args) {
3025         /* According to LSB: 3, "program is not running" */
3026         return check_unit_generic(bus, 3, "active\0reloading\0", args + 1);
3027 }
3028
3029 static int check_unit_failed(sd_bus *bus, char **args) {
3030         return check_unit_generic(bus, 1, "failed\0", args + 1);
3031 }
3032
3033 static int kill_unit(sd_bus *bus, char **args) {
3034         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
3035         _cleanup_strv_free_ char **names = NULL;
3036         char **name;
3037         int r, q;
3038
3039         assert(bus);
3040         assert(args);
3041
3042         if (!arg_kill_who)
3043                 arg_kill_who = "all";
3044
3045         r = expand_names(bus, args + 1, NULL, &names);
3046         if (r < 0)
3047                 log_error("Failed to expand names: %s", strerror(-r));
3048
3049         STRV_FOREACH(name, names) {
3050                 q = sd_bus_call_method(
3051                                 bus,
3052                                 "org.freedesktop.systemd1",
3053                                 "/org/freedesktop/systemd1",
3054                                 "org.freedesktop.systemd1.Manager",
3055                                 "KillUnit",
3056                                 &error,
3057                                 NULL,
3058                                 "ssi", *names, arg_kill_who, arg_signal);
3059                 if (q < 0) {
3060                         log_error("Failed to kill unit %s: %s",
3061                                   *names, bus_error_message(&error, r));
3062                         if (r == 0)
3063                                 r = q;
3064                 }
3065         }
3066
3067         return r;
3068 }
3069
3070 typedef struct ExecStatusInfo {
3071         char *name;
3072
3073         char *path;
3074         char **argv;
3075
3076         bool ignore;
3077
3078         usec_t start_timestamp;
3079         usec_t exit_timestamp;
3080         pid_t pid;
3081         int code;
3082         int status;
3083
3084         LIST_FIELDS(struct ExecStatusInfo, exec);
3085 } ExecStatusInfo;
3086
3087 static void exec_status_info_free(ExecStatusInfo *i) {
3088         assert(i);
3089
3090         free(i->name);
3091         free(i->path);
3092         strv_free(i->argv);
3093         free(i);
3094 }
3095
3096 static int exec_status_info_deserialize(sd_bus_message *m, ExecStatusInfo *i) {
3097         uint64_t start_timestamp, exit_timestamp, start_timestamp_monotonic, exit_timestamp_monotonic;
3098         const char *path;
3099         uint32_t pid;
3100         int32_t code, status;
3101         int ignore, r;
3102
3103         assert(m);
3104         assert(i);
3105
3106         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_STRUCT, "sasbttttuii");
3107         if (r < 0)
3108                 return bus_log_parse_error(r);
3109         else if (r == 0)
3110                 return 0;
3111
3112         r = sd_bus_message_read(m, "s", &path);
3113         if (r < 0)
3114                 return bus_log_parse_error(r);
3115
3116         i->path = strdup(path);
3117         if (!i->path)
3118                 return log_oom();
3119
3120         r = sd_bus_message_read_strv(m, &i->argv);
3121         if (r < 0)
3122                 return bus_log_parse_error(r);
3123
3124         r = sd_bus_message_read(m,
3125                                 "bttttuii",
3126                                 &ignore,
3127                                 &start_timestamp, &start_timestamp_monotonic,
3128                                 &exit_timestamp, &exit_timestamp_monotonic,
3129                                 &pid,
3130                                 &code, &status);
3131         if (r < 0)
3132                 return bus_log_parse_error(r);
3133
3134         i->ignore = ignore;
3135         i->start_timestamp = (usec_t) start_timestamp;
3136         i->exit_timestamp = (usec_t) exit_timestamp;
3137         i->pid = (pid_t) pid;
3138         i->code = code;
3139         i->status = status;
3140
3141         r = sd_bus_message_exit_container(m);
3142         if (r < 0)
3143                 return bus_log_parse_error(r);
3144
3145         return 1;
3146 }
3147
3148 typedef struct UnitStatusInfo {
3149         const char *id;
3150         const char *load_state;
3151         const char *active_state;
3152         const char *sub_state;
3153         const char *unit_file_state;
3154
3155         const char *description;
3156         const char *following;
3157
3158         char **documentation;
3159
3160         const char *fragment_path;
3161         const char *source_path;
3162         const char *control_group;
3163
3164         char **dropin_paths;
3165
3166         const char *load_error;
3167         const char *result;
3168
3169         usec_t inactive_exit_timestamp;
3170         usec_t inactive_exit_timestamp_monotonic;
3171         usec_t active_enter_timestamp;
3172         usec_t active_exit_timestamp;
3173         usec_t inactive_enter_timestamp;
3174
3175         bool need_daemon_reload;
3176
3177         /* Service */
3178         pid_t main_pid;
3179         pid_t control_pid;
3180         const char *status_text;
3181         const char *pid_file;
3182         bool running:1;
3183         int status_errno;
3184
3185         usec_t start_timestamp;
3186         usec_t exit_timestamp;
3187
3188         int exit_code, exit_status;
3189
3190         usec_t condition_timestamp;
3191         bool condition_result;
3192         bool failed_condition_trigger;
3193         bool failed_condition_negate;
3194         const char *failed_condition;
3195         const char *failed_condition_param;
3196
3197         /* Socket */
3198         unsigned n_accepted;
3199         unsigned n_connections;
3200         bool accept;
3201
3202         /* Pairs of type, path */
3203         char **listen;
3204
3205         /* Device */
3206         const char *sysfs_path;
3207
3208         /* Mount, Automount */
3209         const char *where;
3210
3211         /* Swap */
3212         const char *what;
3213
3214         LIST_HEAD(ExecStatusInfo, exec);
3215 } UnitStatusInfo;
3216
3217 static void print_status_info(
3218                 UnitStatusInfo *i,
3219                 bool *ellipsized) {
3220
3221         ExecStatusInfo *p;
3222         const char *active_on, *active_off, *on, *off, *ss;
3223         usec_t timestamp;
3224         char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], *s1;
3225         char since2[FORMAT_TIMESTAMP_MAX], *s2;
3226         const char *path;
3227         int flags =
3228                 arg_all * OUTPUT_SHOW_ALL |
3229                 (!on_tty() || pager_have()) * OUTPUT_FULL_WIDTH |
3230                 on_tty() * OUTPUT_COLOR |
3231                 !arg_quiet * OUTPUT_WARN_CUTOFF |
3232                 arg_full * OUTPUT_FULL_WIDTH;
3233         char **t, **t2;
3234
3235         assert(i);
3236
3237         /* This shows pretty information about a unit. See
3238          * print_property() for a low-level property printer */
3239
3240         if (streq_ptr(i->active_state, "failed")) {
3241                 active_on = ansi_highlight_red();
3242                 active_off = ansi_highlight_off();
3243         } else if (streq_ptr(i->active_state, "active") || streq_ptr(i->active_state, "reloading")) {
3244                 active_on = ansi_highlight_green();
3245                 active_off = ansi_highlight_off();
3246         } else
3247                 active_on = active_off = "";
3248
3249         printf("%s%s%s %s", active_on, draw_special_char(DRAW_BLACK_CIRCLE), active_off, strna(i->id));
3250
3251         if (i->description && !streq_ptr(i->id, i->description))
3252                 printf(" - %s", i->description);
3253
3254         printf("\n");
3255
3256         if (i->following)
3257                 printf("   Follow: unit currently follows state of %s\n", i->following);
3258
3259         if (streq_ptr(i->load_state, "error")) {
3260                 on = ansi_highlight_red();
3261                 off = ansi_highlight_off();
3262         } else
3263                 on = off = "";
3264
3265         path = i->source_path ? i->source_path : i->fragment_path;
3266
3267         if (i->load_error)
3268                 printf("   Loaded: %s%s%s (Reason: %s)\n",
3269                        on, strna(i->load_state), off, i->load_error);
3270         else if (path && i->unit_file_state)
3271                 printf("   Loaded: %s%s%s (%s; %s)\n",
3272                        on, strna(i->load_state), off, path, i->unit_file_state);
3273         else if (path)
3274                 printf("   Loaded: %s%s%s (%s)\n",
3275                        on, strna(i->load_state), off, path);
3276         else
3277                 printf("   Loaded: %s%s%s\n",
3278                        on, strna(i->load_state), off);
3279
3280         if (!strv_isempty(i->dropin_paths)) {
3281                 _cleanup_free_ char *dir = NULL;
3282                 bool last = false;
3283                 char ** dropin;
3284
3285                 STRV_FOREACH(dropin, i->dropin_paths) {
3286                         if (! dir || last) {
3287                                 printf(dir ? "        " : "  Drop-In: ");
3288
3289                                 free(dir);
3290                                 dir = NULL;
3291
3292                                 if (path_get_parent(*dropin, &dir) < 0) {
3293                                         log_oom();
3294                                         return;
3295                                 }
3296
3297                                 printf("%s\n           %s", dir,
3298                                        draw_special_char(DRAW_TREE_RIGHT));
3299                         }
3300
3301                         last = ! (*(dropin + 1) && startswith(*(dropin + 1), dir));
3302
3303                         printf("%s%s", basename(*dropin), last ? "\n" : ", ");
3304                 }
3305         }
3306
3307         ss = streq_ptr(i->active_state, i->sub_state) ? NULL : i->sub_state;
3308         if (ss)
3309                 printf("   Active: %s%s (%s)%s",
3310                        active_on, strna(i->active_state), ss, active_off);
3311         else
3312                 printf("   Active: %s%s%s",
3313                        active_on, strna(i->active_state), active_off);
3314
3315         if (!isempty(i->result) && !streq(i->result, "success"))
3316                 printf(" (Result: %s)", i->result);
3317
3318         timestamp = (streq_ptr(i->active_state, "active")      ||
3319                      streq_ptr(i->active_state, "reloading"))   ? i->active_enter_timestamp :
3320                     (streq_ptr(i->active_state, "inactive")    ||
3321                      streq_ptr(i->active_state, "failed"))      ? i->inactive_enter_timestamp :
3322                     streq_ptr(i->active_state, "activating")    ? i->inactive_exit_timestamp :
3323                                                                   i->active_exit_timestamp;
3324
3325         s1 = format_timestamp_relative(since1, sizeof(since1), timestamp);
3326         s2 = format_timestamp(since2, sizeof(since2), timestamp);
3327
3328         if (s1)
3329                 printf(" since %s; %s\n", s2, s1);
3330         else if (s2)
3331                 printf(" since %s\n", s2);
3332         else
3333                 printf("\n");
3334
3335         if (!i->condition_result && i->condition_timestamp > 0) {
3336                 s1 = format_timestamp_relative(since1, sizeof(since1), i->condition_timestamp);
3337                 s2 = format_timestamp(since2, sizeof(since2), i->condition_timestamp);
3338
3339                 printf("           start condition failed at %s%s%s\n",
3340                        s2, s1 ? "; " : "", s1 ? s1 : "");
3341                 if (i->failed_condition_trigger)
3342                         printf("           none of the trigger conditions were met\n");
3343                 else if (i->failed_condition)
3344                         printf("           %s=%s%s was not met\n",
3345                                i->failed_condition,
3346                                i->failed_condition_negate ? "!" : "",
3347                                i->failed_condition_param);
3348         }
3349
3350         if (i->sysfs_path)
3351                 printf("   Device: %s\n", i->sysfs_path);
3352         if (i->where)
3353                 printf("    Where: %s\n", i->where);
3354         if (i->what)
3355                 printf("     What: %s\n", i->what);
3356
3357         STRV_FOREACH(t, i->documentation)
3358                 printf(" %*s %s\n", 9, t == i->documentation ? "Docs:" : "", *t);
3359
3360         STRV_FOREACH_PAIR(t, t2, i->listen)
3361                 printf(" %*s %s (%s)\n", 9, t == i->listen ? "Listen:" : "", *t2, *t);
3362
3363         if (i->accept)
3364                 printf(" Accepted: %u; Connected: %u\n", i->n_accepted, i->n_connections);
3365
3366         LIST_FOREACH(exec, p, i->exec) {
3367                 _cleanup_free_ char *argv = NULL;
3368                 bool good;
3369
3370                 /* Only show exited processes here */
3371                 if (p->code == 0)
3372                         continue;
3373
3374                 argv = strv_join(p->argv, " ");
3375                 printf("  Process: %u %s=%s ", p->pid, p->name, strna(argv));
3376
3377                 good = is_clean_exit_lsb(p->code, p->status, NULL);
3378                 if (!good) {
3379                         on = ansi_highlight_red();
3380                         off = ansi_highlight_off();
3381                 } else
3382                         on = off = "";
3383
3384                 printf("%s(code=%s, ", on, sigchld_code_to_string(p->code));
3385
3386                 if (p->code == CLD_EXITED) {
3387                         const char *c;
3388
3389                         printf("status=%i", p->status);
3390
3391                         c = exit_status_to_string(p->status, EXIT_STATUS_SYSTEMD);
3392                         if (c)
3393                                 printf("/%s", c);
3394
3395                 } else
3396                         printf("signal=%s", signal_to_string(p->status));
3397
3398                 printf(")%s\n", off);
3399
3400                 if (i->main_pid == p->pid &&
3401                     i->start_timestamp == p->start_timestamp &&
3402                     i->exit_timestamp == p->start_timestamp)
3403                         /* Let's not show this twice */
3404                         i->main_pid = 0;
3405
3406                 if (p->pid == i->control_pid)
3407                         i->control_pid = 0;
3408         }
3409
3410         if (i->main_pid > 0 || i->control_pid > 0) {
3411                 if (i->main_pid > 0) {
3412                         printf(" Main PID: %u", (unsigned) i->main_pid);
3413
3414                         if (i->running) {
3415                                 _cleanup_free_ char *comm = NULL;
3416                                 get_process_comm(i->main_pid, &comm);
3417                                 if (comm)
3418                                         printf(" (%s)", comm);
3419                         } else if (i->exit_code > 0) {
3420                                 printf(" (code=%s, ", sigchld_code_to_string(i->exit_code));
3421
3422                                 if (i->exit_code == CLD_EXITED) {
3423                                         const char *c;
3424
3425                                         printf("status=%i", i->exit_status);
3426
3427                                         c = exit_status_to_string(i->exit_status, EXIT_STATUS_SYSTEMD);
3428                                         if (c)
3429                                                 printf("/%s", c);
3430
3431                                 } else
3432                                         printf("signal=%s", signal_to_string(i->exit_status));
3433                                 printf(")");
3434                         }
3435
3436                         if (i->control_pid > 0)
3437                                 printf(";");
3438                 }
3439
3440                 if (i->control_pid > 0) {
3441                         _cleanup_free_ char *c = NULL;
3442
3443                         printf(" %8s: %u", i->main_pid ? "" : " Control", (unsigned) i->control_pid);
3444
3445                         get_process_comm(i->control_pid, &c);
3446                         if (c)
3447                                 printf(" (%s)", c);
3448                 }
3449
3450                 printf("\n");
3451         }
3452
3453         if (i->status_text)
3454                 printf("   Status: \"%s\"\n", i->status_text);
3455         if (i->status_errno > 0)
3456                 printf("    Error: %i (%s)\n", i->status_errno, strerror(i->status_errno));
3457
3458         if (i->control_group &&
3459             (i->main_pid > 0 || i->control_pid > 0 ||
3460              ((arg_transport != BUS_TRANSPORT_LOCAL && arg_transport != BUS_TRANSPORT_CONTAINER) || cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, i->control_group, false) == 0))) {
3461                 unsigned c;
3462
3463                 printf("   CGroup: %s\n", i->control_group);
3464
3465                 if (arg_transport == BUS_TRANSPORT_LOCAL || arg_transport == BUS_TRANSPORT_CONTAINER) {
3466                         unsigned k = 0;
3467                         pid_t extra[2];
3468                         static const char prefix[] = "           ";
3469
3470                         c = columns();
3471                         if (c > sizeof(prefix) - 1)
3472                                 c -= sizeof(prefix) - 1;
3473                         else
3474                                 c = 0;
3475
3476                         if (i->main_pid > 0)
3477                                 extra[k++] = i->main_pid;
3478
3479                         if (i->control_pid > 0)
3480                                 extra[k++] = i->control_pid;
3481
3482                         show_cgroup_and_extra(SYSTEMD_CGROUP_CONTROLLER, i->control_group, prefix, c, false, extra, k, flags);
3483                 }
3484         }
3485
3486         if (i->id && arg_transport == BUS_TRANSPORT_LOCAL) {
3487                 show_journal_by_unit(stdout,
3488                                      i->id,
3489                                      arg_output,
3490                                      0,
3491                                      i->inactive_exit_timestamp_monotonic,
3492                                      arg_lines,
3493                                      getuid(),
3494                                      flags | OUTPUT_BEGIN_NEWLINE,
3495                                      arg_scope == UNIT_FILE_SYSTEM,
3496                                      ellipsized);
3497         }
3498
3499         if (i->need_daemon_reload)
3500                 printf("\n%sWarning:%s Unit file changed on disk, 'systemctl %sdaemon-reload' recommended.\n",
3501                        ansi_highlight_red(),
3502                        ansi_highlight_off(),
3503                        arg_scope == UNIT_FILE_SYSTEM ? "" : "--user ");
3504 }
3505
3506 static void show_unit_help(UnitStatusInfo *i) {
3507         char **p;
3508
3509         assert(i);
3510
3511         if (!i->documentation) {
3512                 log_info("Documentation for %s not known.", i->id);
3513                 return;
3514         }
3515
3516         STRV_FOREACH(p, i->documentation)
3517                 if (startswith(*p, "man:"))
3518                         show_man_page(*p + 4, false);
3519                 else
3520                         log_info("Can't show: %s", *p);
3521 }
3522
3523 static int status_property(const char *name, sd_bus_message *m, UnitStatusInfo *i, const char *contents) {
3524         int r;
3525
3526         assert(name);
3527         assert(m);
3528         assert(i);
3529
3530         switch (contents[0]) {
3531
3532         case SD_BUS_TYPE_STRING: {
3533                 const char *s;
3534
3535                 r = sd_bus_message_read(m, "s", &s);
3536                 if (r < 0)
3537                         return bus_log_parse_error(r);
3538
3539                 if (!isempty(s)) {
3540                         if (streq(name, "Id"))
3541                                 i->id = s;
3542                         else if (streq(name, "LoadState"))
3543                                 i->load_state = s;
3544                         else if (streq(name, "ActiveState"))
3545                                 i->active_state = s;
3546                         else if (streq(name, "SubState"))
3547                                 i->sub_state = s;
3548                         else if (streq(name, "Description"))
3549                                 i->description = s;
3550                         else if (streq(name, "FragmentPath"))
3551                                 i->fragment_path = s;
3552                         else if (streq(name, "SourcePath"))
3553                                 i->source_path = s;
3554 #ifndef NOLEGACY
3555                         else if (streq(name, "DefaultControlGroup")) {
3556                                 const char *e;
3557                                 e = startswith(s, SYSTEMD_CGROUP_CONTROLLER ":");
3558                                 if (e)
3559                                         i->control_group = e;
3560                         }
3561 #endif
3562                         else if (streq(name, "ControlGroup"))
3563                                 i->control_group = s;
3564                         else if (streq(name, "StatusText"))
3565                                 i->status_text = s;
3566                         else if (streq(name, "PIDFile"))
3567                                 i->pid_file = s;
3568                         else if (streq(name, "SysFSPath"))
3569                                 i->sysfs_path = s;
3570                         else if (streq(name, "Where"))
3571                                 i->where = s;
3572                         else if (streq(name, "What"))
3573                                 i->what = s;
3574                         else if (streq(name, "Following"))
3575                                 i->following = s;
3576                         else if (streq(name, "UnitFileState"))
3577                                 i->unit_file_state = s;
3578                         else if (streq(name, "Result"))
3579                                 i->result = s;
3580                 }
3581
3582                 break;
3583         }
3584
3585         case SD_BUS_TYPE_BOOLEAN: {
3586                 int b;
3587
3588                 r = sd_bus_message_read(m, "b", &b);
3589                 if (r < 0)
3590                         return bus_log_parse_error(r);
3591
3592                 if (streq(name, "Accept"))
3593                         i->accept = b;
3594                 else if (streq(name, "NeedDaemonReload"))
3595                         i->need_daemon_reload = b;
3596                 else if (streq(name, "ConditionResult"))
3597                         i->condition_result = b;
3598
3599                 break;
3600         }
3601
3602         case SD_BUS_TYPE_UINT32: {
3603                 uint32_t u;
3604
3605                 r = sd_bus_message_read(m, "u", &u);
3606                 if (r < 0)
3607                         return bus_log_parse_error(r);
3608
3609                 if (streq(name, "MainPID")) {
3610                         if (u > 0) {
3611                                 i->main_pid = (pid_t) u;
3612                                 i->running = true;
3613                         }
3614                 } else if (streq(name, "ControlPID"))
3615                         i->control_pid = (pid_t) u;
3616                 else if (streq(name, "ExecMainPID")) {
3617                         if (u > 0)
3618                                 i->main_pid = (pid_t) u;
3619                 } else if (streq(name, "NAccepted"))
3620                         i->n_accepted = u;
3621                 else if (streq(name, "NConnections"))
3622                         i->n_connections = u;
3623
3624                 break;
3625         }
3626
3627         case SD_BUS_TYPE_INT32: {
3628                 int32_t j;
3629
3630                 r = sd_bus_message_read(m, "i", &j);
3631                 if (r < 0)
3632                         return bus_log_parse_error(r);
3633
3634                 if (streq(name, "ExecMainCode"))
3635                         i->exit_code = (int) j;
3636                 else if (streq(name, "ExecMainStatus"))
3637                         i->exit_status = (int) j;
3638                 else if (streq(name, "StatusErrno"))
3639                         i->status_errno = (int) j;
3640
3641                 break;
3642         }
3643
3644         case SD_BUS_TYPE_UINT64: {
3645                 uint64_t u;
3646
3647                 r = sd_bus_message_read(m, "t", &u);
3648                 if (r < 0)
3649                         return bus_log_parse_error(r);
3650
3651                 if (streq(name, "ExecMainStartTimestamp"))
3652                         i->start_timestamp = (usec_t) u;
3653                 else if (streq(name, "ExecMainExitTimestamp"))
3654                         i->exit_timestamp = (usec_t) u;
3655                 else if (streq(name, "ActiveEnterTimestamp"))
3656                         i->active_enter_timestamp = (usec_t) u;
3657                 else if (streq(name, "InactiveEnterTimestamp"))
3658                         i->inactive_enter_timestamp = (usec_t) u;
3659                 else if (streq(name, "InactiveExitTimestamp"))
3660                         i->inactive_exit_timestamp = (usec_t) u;
3661                 else if (streq(name, "InactiveExitTimestampMonotonic"))
3662                         i->inactive_exit_timestamp_monotonic = (usec_t) u;
3663                 else if (streq(name, "ActiveExitTimestamp"))
3664                         i->active_exit_timestamp = (usec_t) u;
3665                 else if (streq(name, "ConditionTimestamp"))
3666                         i->condition_timestamp = (usec_t) u;
3667
3668                 break;
3669         }
3670
3671         case SD_BUS_TYPE_ARRAY:
3672
3673                 if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && startswith(name, "Exec")) {
3674                         _cleanup_free_ ExecStatusInfo *info = NULL;
3675
3676                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sasbttttuii)");
3677                         if (r < 0)
3678                                 return bus_log_parse_error(r);
3679
3680                         info = new0(ExecStatusInfo, 1);
3681                         if (!info)
3682                                 return log_oom();
3683
3684                         while ((r = exec_status_info_deserialize(m, info)) > 0) {
3685
3686                                 info->name = strdup(name);
3687                                 if (!info->name)
3688                                         log_oom();
3689
3690                                 LIST_PREPEND(exec, i->exec, info);
3691
3692                                 info = new0(ExecStatusInfo, 1);
3693                                 if (!info)
3694                                         log_oom();
3695                         }
3696
3697                         if (r < 0)
3698                                 return bus_log_parse_error(r);
3699
3700                         r = sd_bus_message_exit_container(m);
3701                         if (r < 0)
3702                                 return bus_log_parse_error(r);
3703
3704                         return 0;
3705
3706                 } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "Listen")) {
3707                         const char *type, *path;
3708
3709                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(ss)");
3710                         if (r < 0)
3711                                 return bus_log_parse_error(r);
3712
3713                         while ((r = sd_bus_message_read(m, "(ss)", &type, &path)) > 0) {
3714
3715                                 r = strv_extend(&i->listen, type);
3716                                 if (r < 0)
3717                                         return r;
3718
3719                                 r = strv_extend(&i->listen, path);
3720                                 if (r < 0)
3721                                         return r;
3722                         }
3723                         if (r < 0)
3724                                 return bus_log_parse_error(r);
3725
3726                         r = sd_bus_message_exit_container(m);
3727                         if (r < 0)
3728                                 return bus_log_parse_error(r);
3729
3730                         return 0;
3731
3732                 } else if (contents[1] == SD_BUS_TYPE_STRING && streq(name, "DropInPaths")) {
3733
3734                         r = sd_bus_message_read_strv(m, &i->dropin_paths);
3735                         if (r < 0)
3736                                 return bus_log_parse_error(r);
3737
3738                 } else if (contents[1] == SD_BUS_TYPE_STRING && streq(name, "Documentation")) {
3739
3740                         r = sd_bus_message_read_strv(m, &i->documentation);
3741                         if (r < 0)
3742                                 return bus_log_parse_error(r);
3743
3744                 } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "Conditions")) {
3745                         const char *cond, *param;
3746                         int trigger, negate;
3747                         int32_t state;
3748
3749                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sbbsi)");
3750                         if (r < 0)
3751                                 return bus_log_parse_error(r);
3752
3753                         while ((r = sd_bus_message_read(m, "(sbbsi)", &cond, &trigger, &negate, &param, &state)) > 0) {
3754                                 log_debug("%s %d %d %s %d", cond, trigger, negate, param, state);
3755                                 if (state < 0 && (!trigger || !i->failed_condition)) {
3756                                         i->failed_condition = cond;
3757                                         i->failed_condition_trigger = trigger;
3758                                         i->failed_condition_negate = negate;
3759                                         i->failed_condition_param = param;
3760                                 }
3761                         }
3762                         if (r < 0)
3763                                 return bus_log_parse_error(r);
3764
3765                         r = sd_bus_message_exit_container(m);
3766                         if (r < 0)
3767                                 return bus_log_parse_error(r);
3768
3769                 } else
3770                         goto skip;
3771
3772                 break;
3773
3774         case SD_BUS_TYPE_STRUCT_BEGIN:
3775
3776                 if (streq(name, "LoadError")) {
3777                         const char *n, *message;
3778
3779                         r = sd_bus_message_read(m, "(ss)", &n, &message);
3780                         if (r < 0)
3781                                 return bus_log_parse_error(r);
3782
3783                         if (!isempty(message))
3784                                 i->load_error = message;
3785                 } else
3786                         goto skip;
3787
3788                 break;
3789
3790         default:
3791                 goto skip;
3792         }
3793
3794         return 0;
3795
3796 skip:
3797         r = sd_bus_message_skip(m, contents);
3798         if (r < 0)
3799                 return bus_log_parse_error(r);
3800
3801         return 0;
3802 }
3803
3804 static int print_property(const char *name, sd_bus_message *m, const char *contents) {
3805         int r;
3806
3807         assert(name);
3808         assert(m);
3809
3810         /* This is a low-level property printer, see
3811          * print_status_info() for the nicer output */
3812
3813         if (arg_properties && !strv_find(arg_properties, name)) {
3814                 /* skip what we didn't read */
3815                 r = sd_bus_message_skip(m, contents);
3816                 return r;
3817         }
3818
3819         switch (contents[0]) {
3820
3821         case SD_BUS_TYPE_STRUCT_BEGIN:
3822
3823                 if (contents[1] == SD_BUS_TYPE_UINT32 && streq(name, "Job")) {
3824                         uint32_t u;
3825
3826                         r = sd_bus_message_read(m, "(uo)", &u, NULL);
3827                         if (r < 0)
3828                                 return bus_log_parse_error(r);
3829
3830                         if (u > 0)
3831                                 printf("%s=%u\n", name, (unsigned) u);
3832                         else if (arg_all)
3833                                 printf("%s=\n", name);
3834
3835                         return 0;
3836
3837                 } else if (contents[1] == SD_BUS_TYPE_STRING && streq(name, "Unit")) {
3838                         const char *s;
3839
3840                         r = sd_bus_message_read(m, "(so)", &s, NULL);
3841                         if (r < 0)
3842                                 return bus_log_parse_error(r);
3843
3844                         if (arg_all || !isempty(s))
3845                                 printf("%s=%s\n", name, s);
3846
3847                         return 0;
3848
3849                 } else if (contents[1] == SD_BUS_TYPE_STRING && streq(name, "LoadError")) {
3850                         const char *a = NULL, *b = NULL;
3851
3852                         r = sd_bus_message_read(m, "(ss)", &a, &b);
3853                         if (r < 0)
3854                                 return bus_log_parse_error(r);
3855
3856                         if (arg_all || !isempty(a) || !isempty(b))
3857                                 printf("%s=%s \"%s\"\n", name, strempty(a), strempty(b));
3858
3859                         return 0;
3860                 } else if (streq_ptr(name, "SystemCallFilter")) {
3861                         _cleanup_strv_free_ char **l = NULL;
3862                         int whitelist;
3863
3864                         r = sd_bus_message_enter_container(m, 'r', "bas");
3865                         if (r < 0)
3866                                 return bus_log_parse_error(r);
3867
3868                         r = sd_bus_message_read(m, "b", &whitelist);
3869                         if (r < 0)
3870                                 return bus_log_parse_error(r);
3871
3872                         r = sd_bus_message_read_strv(m, &l);
3873                         if (r < 0)
3874                                 return bus_log_parse_error(r);
3875
3876                         r = sd_bus_message_exit_container(m);
3877                         if (r < 0)
3878                                 return bus_log_parse_error(r);
3879
3880                         if (arg_all || whitelist || !strv_isempty(l)) {
3881                                 bool first = true;
3882                                 char **i;
3883
3884                                 fputs(name, stdout);
3885                                 fputc('=', stdout);
3886
3887                                 if (!whitelist)
3888                                         fputc('~', stdout);
3889
3890                                 STRV_FOREACH(i, l) {
3891                                         if (first)
3892                                                 first = false;
3893                                         else
3894                                                 fputc(' ', stdout);
3895
3896                                         fputs(*i, stdout);
3897                                 }
3898                                 fputc('\n', stdout);
3899                         }
3900
3901                         return 0;
3902                 }
3903
3904                 break;
3905
3906         case SD_BUS_TYPE_ARRAY:
3907
3908                 if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "EnvironmentFiles")) {
3909                         const char *path;
3910                         int ignore;
3911
3912                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sb)");
3913                         if (r < 0)
3914                                 return bus_log_parse_error(r);
3915
3916                         while ((r = sd_bus_message_read(m, "(sb)", &path, &ignore)) > 0)
3917                                 printf("EnvironmentFile=%s (ignore_errors=%s)\n", path, yes_no(ignore));
3918
3919                         if (r < 0)
3920                                 return bus_log_parse_error(r);
3921
3922                         r = sd_bus_message_exit_container(m);
3923                         if (r < 0)
3924                                 return bus_log_parse_error(r);
3925
3926                         return 0;
3927
3928                 } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "Paths")) {
3929                         const char *type, *path;
3930
3931                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(ss)");
3932                         if (r < 0)
3933                                 return bus_log_parse_error(r);
3934
3935                         while ((r = sd_bus_message_read(m, "(ss)", &type, &path)) > 0)
3936                                 printf("%s=%s\n", type, path);
3937                         if (r < 0)
3938                                 return bus_log_parse_error(r);
3939
3940                         r = sd_bus_message_exit_container(m);
3941                         if (r < 0)
3942                                 return bus_log_parse_error(r);
3943
3944                         return 0;
3945
3946                 } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "Listen")) {
3947                         const char *type, *path;
3948
3949                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(ss)");
3950                         if (r < 0)
3951                                 return bus_log_parse_error(r);
3952
3953                         while ((r = sd_bus_message_read(m, "(ss)", &type, &path)) > 0)
3954                                 printf("Listen%s=%s\n", type, path);
3955                         if (r < 0)
3956                                 return bus_log_parse_error(r);
3957
3958                         r = sd_bus_message_exit_container(m);
3959                         if (r < 0)
3960                                 return bus_log_parse_error(r);
3961
3962                         return 0;
3963
3964                 } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "Timers")) {
3965                         const char *base;
3966                         uint64_t value, next_elapse;
3967
3968                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(stt)");
3969                         if (r < 0)
3970                                 return bus_log_parse_error(r);
3971
3972                         while ((r = sd_bus_message_read(m, "(stt)", &base, &value, &next_elapse)) > 0) {
3973                                 char timespan1[FORMAT_TIMESPAN_MAX], timespan2[FORMAT_TIMESPAN_MAX];
3974
3975                                 printf("%s={ value=%s ; next_elapse=%s }\n",
3976                                        base,
3977                                        format_timespan(timespan1, sizeof(timespan1), value, 0),
3978                                        format_timespan(timespan2, sizeof(timespan2), next_elapse, 0));
3979                         }
3980                         if (r < 0)
3981                                 return bus_log_parse_error(r);
3982
3983                         r = sd_bus_message_exit_container(m);
3984                         if (r < 0)
3985                                 return bus_log_parse_error(r);
3986
3987                         return 0;
3988
3989                 } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && startswith(name, "Exec")) {
3990                         ExecStatusInfo info = {};
3991
3992                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sasbttttuii)");
3993                         if (r < 0)
3994                                 return bus_log_parse_error(r);
3995
3996                         while ((r = exec_status_info_deserialize(m, &info)) > 0) {
3997                                 char timestamp1[FORMAT_TIMESTAMP_MAX], timestamp2[FORMAT_TIMESTAMP_MAX];
3998                                 _cleanup_free_ char *tt;
3999
4000                                 tt = strv_join(info.argv, " ");
4001
4002                                 printf("%s={ path=%s ; argv[]=%s ; ignore_errors=%s ; start_time=[%s] ; stop_time=[%s] ; pid=%u ; code=%s ; status=%i%s%s }\n",
4003                                        name,
4004                                        strna(info.path),
4005                                        strna(tt),
4006                                        yes_no(info.ignore),
4007                                        strna(format_timestamp(timestamp1, sizeof(timestamp1), info.start_timestamp)),
4008                                        strna(format_timestamp(timestamp2, sizeof(timestamp2), info.exit_timestamp)),
4009                                        (unsigned) info. pid,
4010                                        sigchld_code_to_string(info.code),
4011                                        info.status,
4012                                        info.code == CLD_EXITED ? "" : "/",
4013                                        strempty(info.code == CLD_EXITED ? NULL : signal_to_string(info.status)));
4014
4015                                 free(info.path);
4016                                 strv_free(info.argv);
4017                                 zero(info);
4018                         }
4019
4020                         r = sd_bus_message_exit_container(m);
4021                         if (r < 0)
4022                                 return bus_log_parse_error(r);
4023
4024                         return 0;
4025
4026                 } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "DeviceAllow")) {
4027                         const char *path, *rwm;
4028
4029                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(ss)");
4030                         if (r < 0)
4031                                 return bus_log_parse_error(r);
4032
4033                         while ((r = sd_bus_message_read(m, "(ss)", &path, &rwm)) > 0)
4034                                 printf("%s=%s %s\n", name, strna(path), strna(rwm));
4035                         if (r < 0)
4036                                 return bus_log_parse_error(r);
4037
4038                         r = sd_bus_message_exit_container(m);
4039                         if (r < 0)
4040                                 return bus_log_parse_error(r);
4041
4042                         return 0;
4043
4044                 } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "BlockIODeviceWeight")) {
4045                         const char *path;
4046                         uint64_t weight;
4047
4048                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(st)");
4049                         if (r < 0)
4050                                 return bus_log_parse_error(r);
4051
4052                         while ((r = sd_bus_message_read(m, "(st)", &path, &weight)) > 0)
4053                                 printf("%s=%s %" PRIu64 "\n", name, strna(path), weight);
4054                         if (r < 0)
4055                                 return bus_log_parse_error(r);
4056
4057                         r = sd_bus_message_exit_container(m);
4058                         if (r < 0)
4059                                 return bus_log_parse_error(r);
4060
4061                         return 0;
4062
4063                 } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && (streq(name, "BlockIOReadBandwidth") || streq(name, "BlockIOWriteBandwidth"))) {
4064                         const char *path;
4065                         uint64_t bandwidth;
4066
4067                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(st)");
4068                         if (r < 0)
4069                                 return bus_log_parse_error(r);
4070
4071                         while ((r = sd_bus_message_read(m, "(st)", &path, &bandwidth)) > 0)
4072                                 printf("%s=%s %" PRIu64 "\n", name, strna(path), bandwidth);
4073                         if (r < 0)
4074                                 return bus_log_parse_error(r);
4075
4076                         r = sd_bus_message_exit_container(m);
4077                         if (r < 0)
4078                                 return bus_log_parse_error(r);
4079
4080                         return 0;
4081                 }
4082
4083                 break;
4084         }
4085
4086         r = bus_print_property(name, m, arg_all);
4087         if (r < 0)
4088                 return bus_log_parse_error(r);
4089
4090         if (r == 0) {
4091                 r = sd_bus_message_skip(m, contents);
4092                 if (r < 0)
4093                         return bus_log_parse_error(r);
4094
4095                 if (arg_all)
4096                         printf("%s=[unprintable]\n", name);
4097         }
4098
4099         return 0;
4100 }
4101
4102 static int show_one(
4103                 const char *verb,
4104                 sd_bus *bus,
4105                 const char *path,
4106                 bool show_properties,
4107                 bool *new_line,
4108                 bool *ellipsized) {
4109
4110         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
4111         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4112         UnitStatusInfo info = {};
4113         ExecStatusInfo *p;
4114         int r;
4115
4116         assert(path);
4117         assert(new_line);
4118
4119         log_debug("Showing one %s", path);
4120
4121         r = sd_bus_call_method(
4122                         bus,
4123                         "org.freedesktop.systemd1",
4124                         path,
4125                         "org.freedesktop.DBus.Properties",
4126                         "GetAll",
4127                         &error,
4128                         &reply,
4129                         "s", "");
4130         if (r < 0) {
4131                 log_error("Failed to get properties: %s", bus_error_message(&error, r));
4132                 return r;
4133         }
4134
4135         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "{sv}");
4136         if (r < 0)
4137                 return bus_log_parse_error(r);
4138
4139         if (*new_line)
4140                 printf("\n");
4141
4142         *new_line = true;
4143
4144         while ((r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) {
4145                 const char *name, *contents;
4146
4147                 r = sd_bus_message_read(reply, "s", &name);
4148                 if (r < 0)
4149                         return bus_log_parse_error(r);
4150
4151                 r = sd_bus_message_peek_type(reply, NULL, &contents);
4152                 if (r < 0)
4153                         return bus_log_parse_error(r);
4154
4155                 r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_VARIANT, contents);
4156                 if (r < 0)
4157                         return bus_log_parse_error(r);
4158
4159                 if (show_properties)
4160                         r = print_property(name, reply, contents);
4161                 else
4162                         r = status_property(name, reply, &info, contents);
4163                 if (r < 0)
4164                         return r;
4165
4166                 r = sd_bus_message_exit_container(reply);
4167                 if (r < 0)
4168                         return bus_log_parse_error(r);
4169
4170                 r = sd_bus_message_exit_container(reply);
4171                 if (r < 0)
4172                         return bus_log_parse_error(r);
4173         }
4174         if (r < 0)
4175                 return bus_log_parse_error(r);
4176
4177         r = sd_bus_message_exit_container(reply);
4178         if (r < 0)
4179                 return bus_log_parse_error(r);
4180
4181         r = 0;
4182
4183         if (!show_properties) {
4184                 if (streq(verb, "help"))
4185                         show_unit_help(&info);
4186                 else
4187                         print_status_info(&info, ellipsized);
4188         }
4189
4190         strv_free(info.documentation);
4191         strv_free(info.dropin_paths);
4192         strv_free(info.listen);
4193
4194         if (!streq_ptr(info.active_state, "active") &&
4195             !streq_ptr(info.active_state, "reloading") &&
4196             streq(verb, "status")) {
4197                 /* According to LSB: "program not running" */
4198                 /* 0: program is running or service is OK
4199                  * 1: program is dead and /run PID file exists
4200                  * 2: program is dead and /run/lock lock file exists
4201                  * 3: program is not running
4202                  * 4: program or service status is unknown
4203                  */
4204                 if (info.pid_file && access(info.pid_file, F_OK) == 0)
4205                         r = 1;
4206                 else
4207                         r = 3;
4208         }
4209
4210         while ((p = info.exec)) {
4211                 LIST_REMOVE(exec, info.exec, p);
4212                 exec_status_info_free(p);
4213         }
4214
4215         return r;
4216 }
4217
4218 static int get_unit_dbus_path_by_pid(
4219                 sd_bus *bus,
4220                 uint32_t pid,
4221                 char **unit) {
4222
4223         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4224         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
4225         char *u;
4226         int r;
4227
4228         r = sd_bus_call_method(
4229                         bus,
4230                         "org.freedesktop.systemd1",
4231                         "/org/freedesktop/systemd1",
4232                         "org.freedesktop.systemd1.Manager",
4233                         "GetUnitByPID",
4234                         &error,
4235                         &reply,
4236                         "u", pid);
4237         if (r < 0) {
4238                 log_error("Failed to get unit for PID "PID_FMT": %s", pid, bus_error_message(&error, r));
4239                 return r;
4240         }
4241
4242         r = sd_bus_message_read(reply, "o", &u);
4243         if (r < 0)
4244                 return bus_log_parse_error(r);
4245
4246         u = strdup(u);
4247         if (!u)
4248                 return log_oom();
4249
4250         *unit = u;
4251         return 0;
4252 }
4253
4254 static int show_all(
4255                 const char* verb,
4256                 sd_bus *bus,
4257                 bool show_properties,
4258                 bool *new_line,
4259                 bool *ellipsized) {
4260
4261         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
4262         _cleanup_free_ UnitInfo *unit_infos = NULL;
4263         const UnitInfo *u;
4264         unsigned c;
4265         int r, ret = 0;
4266
4267         r = get_unit_list(bus, NULL, NULL, &unit_infos, 0, &reply);
4268         if (r < 0)
4269                 return r;
4270
4271         pager_open_if_enabled();
4272
4273         c = (unsigned) r;
4274
4275         qsort_safe(unit_infos, c, sizeof(UnitInfo), compare_unit_info);
4276
4277         for (u = unit_infos; u < unit_infos + c; u++) {
4278                 _cleanup_free_ char *p = NULL;
4279
4280                 p = unit_dbus_path_from_name(u->id);
4281                 if (!p)
4282                         return log_oom();
4283
4284                 r = show_one(verb, bus, p, show_properties, new_line, ellipsized);
4285                 if (r < 0)
4286                         return r;
4287                 else if (r > 0 && ret == 0)
4288                         ret = r;
4289         }
4290
4291         return ret;
4292 }
4293
4294 static int show_system_status(sd_bus *bus) {
4295         char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], since2[FORMAT_TIMESTAMP_MAX];
4296         _cleanup_free_ char *hn = NULL;
4297         struct machine_info mi = {};
4298         const char *on, *off;
4299         int r;
4300
4301         hn = gethostname_malloc();
4302         if (!hn)
4303                 return log_oom();
4304
4305         r = bus_map_all_properties(bus, "org.freedesktop.systemd1", "/org/freedesktop/systemd1", machine_info_property_map, &mi);
4306         if (r < 0) {
4307                 log_error("Failed to read server status: %s", strerror(-r));
4308                 return r;
4309         }
4310
4311         if (streq_ptr(mi.state, "degraded")) {
4312                 on = ansi_highlight_red();
4313                 off = ansi_highlight_off();
4314         } else if (!streq_ptr(mi.state, "running")) {
4315                 on = ansi_highlight_yellow();
4316                 off = ansi_highlight_off();
4317         } else
4318                 on = off = "";
4319
4320         printf("%s%s%s %s\n", on, draw_special_char(DRAW_BLACK_CIRCLE), off, arg_host ? arg_host : hn);
4321
4322         printf("    State: %s%s%s\n",
4323                on, strna(mi.state), off);
4324
4325         printf("     Jobs: %u queued\n", mi.n_jobs);
4326         printf("   Failed: %u units\n", mi.n_failed_units);
4327
4328         printf("    Since: %s; %s\n",
4329                format_timestamp(since2, sizeof(since2), mi.timestamp),
4330                format_timestamp_relative(since1, sizeof(since1), mi.timestamp));
4331
4332         printf("   CGroup: %s\n", mi.control_group ?: "/");
4333         if (arg_transport == BUS_TRANSPORT_LOCAL || arg_transport == BUS_TRANSPORT_CONTAINER) {
4334                 int flags =
4335                         arg_all * OUTPUT_SHOW_ALL |
4336                         (!on_tty() || pager_have()) * OUTPUT_FULL_WIDTH |
4337                         on_tty() * OUTPUT_COLOR |
4338                         !arg_quiet * OUTPUT_WARN_CUTOFF |
4339                         arg_full * OUTPUT_FULL_WIDTH;
4340
4341                 static const char prefix[] = "           ";
4342                 unsigned c;
4343
4344                 c = columns();
4345                 if (c > sizeof(prefix) - 1)
4346                         c -= sizeof(prefix) - 1;
4347                 else
4348                         c = 0;
4349
4350                 show_cgroup(SYSTEMD_CGROUP_CONTROLLER, strempty(mi.control_group), prefix, c, false, flags);
4351         }
4352
4353         free(mi.state);
4354         free(mi.control_group);
4355
4356         return 0;
4357 }
4358
4359 static int show(sd_bus *bus, char **args) {
4360         bool show_properties, show_status, new_line = false;
4361         bool ellipsized = false;
4362         int r, ret = 0;
4363
4364         assert(bus);
4365         assert(args);
4366
4367         show_properties = streq(args[0], "show");
4368         show_status = streq(args[0], "status");
4369
4370         if (show_properties)
4371                 pager_open_if_enabled();
4372
4373         /* If no argument is specified inspect the manager itself */
4374
4375         if (show_properties && strv_length(args) <= 1)
4376                 return show_one(args[0], bus, "/org/freedesktop/systemd1", show_properties, &new_line, &ellipsized);
4377
4378         if (show_status && strv_length(args) <= 1) {
4379
4380                 pager_open_if_enabled();
4381                 show_system_status(bus);
4382                 new_line = true;
4383
4384                 if (arg_all)
4385                         ret = show_all(args[0], bus, false, &new_line, &ellipsized);
4386         } else {
4387                 _cleanup_free_ char **patterns = NULL;
4388                 char **name;
4389
4390                 STRV_FOREACH(name, args + 1) {
4391                         _cleanup_free_ char *unit = NULL;
4392                         uint32_t id;
4393
4394                         if (safe_atou32(*name, &id) < 0) {
4395                                 if (strv_push(&patterns, *name) < 0)
4396                                         return log_oom();
4397
4398                                 continue;
4399                         } else if (show_properties) {
4400                                 /* Interpret as job id */
4401                                 if (asprintf(&unit, "/org/freedesktop/systemd1/job/%u", id) < 0)
4402                                         return log_oom();
4403
4404                         } else {
4405                                 /* Interpret as PID */
4406                                 r = get_unit_dbus_path_by_pid(bus, id, &unit);
4407                                 if (r < 0) {
4408                                         ret = r;
4409                                         continue;
4410                                 }
4411                         }
4412
4413                         r = show_one(args[0], bus, unit, show_properties,
4414                                      &new_line, &ellipsized);
4415                         if (r < 0)
4416                                 return r;
4417                         else if (r > 0 && ret == 0)
4418                                 ret = r;
4419                 }
4420
4421                 if (!strv_isempty(patterns)) {
4422                         _cleanup_strv_free_ char **names = NULL;
4423
4424                         r = expand_names(bus, patterns, NULL, &names);
4425                         if (r < 0)
4426                                 log_error("Failed to expand names: %s", strerror(-r));
4427
4428                         STRV_FOREACH(name, names) {
4429                                 _cleanup_free_ char *unit;
4430
4431                                 unit = unit_dbus_path_from_name(*name);
4432                                 if (!unit)
4433                                         return log_oom();
4434
4435                                 r = show_one(args[0], bus, unit, show_properties,
4436                                              &new_line, &ellipsized);
4437                                 if (r < 0)
4438                                         return r;
4439                                 else if (r > 0 && ret == 0)
4440                                         ret = r;
4441                         }
4442                 }
4443         }
4444
4445         if (ellipsized && !arg_quiet)
4446                 printf("Hint: Some lines were ellipsized, use -l to show in full.\n");
4447
4448         return ret;
4449 }
4450
4451 static int cat(sd_bus *bus, char **args) {
4452         _cleanup_free_ char *unit = NULL;
4453         _cleanup_strv_free_ char **names = NULL;
4454         char **name;
4455         bool first = true;
4456         int r = 0;
4457
4458         assert(bus);
4459         assert(args);
4460
4461         r = expand_names(bus, args + 1, NULL, &names);
4462         if (r < 0)
4463                 log_error("Failed to expand names: %s", strerror(-r));
4464
4465         pager_open_if_enabled();
4466
4467         STRV_FOREACH(name, names) {
4468                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4469                 _cleanup_strv_free_ char **dropin_paths = NULL;
4470                 _cleanup_free_ char *fragment_path = NULL;
4471                 char **path;
4472
4473                 unit = unit_dbus_path_from_name(*name);
4474                 if (!unit)
4475                         return log_oom();
4476
4477                 if (need_daemon_reload(bus, *name) > 0)
4478                         log_warning("Unit file of %s changed on disk. Run 'systemctl%s daemon-reload'.",
4479                                     *name, arg_scope == UNIT_FILE_SYSTEM ? "" : " --user");
4480
4481                 r = sd_bus_get_property_string(
4482                                 bus,
4483                                 "org.freedesktop.systemd1",
4484                                 unit,
4485                                 "org.freedesktop.systemd1.Unit",
4486                                 "FragmentPath",
4487                                 &error,
4488                                 &fragment_path);
4489                 if (r < 0) {
4490                         log_warning("Failed to get FragmentPath: %s", bus_error_message(&error, r));
4491                         continue;
4492                 }
4493
4494                 r = sd_bus_get_property_strv(
4495                                 bus,
4496                                 "org.freedesktop.systemd1",
4497                                 unit,
4498                                 "org.freedesktop.systemd1.Unit",
4499                                 "DropInPaths",
4500                                 &error,
4501                                 &dropin_paths);
4502                 if (r < 0) {
4503                         log_warning("Failed to get DropInPaths: %s", bus_error_message(&error, r));
4504                         continue;
4505                 }
4506
4507                 if (first)
4508                         first = false;
4509                 else
4510                         puts("");
4511
4512                 if (!isempty(fragment_path)) {
4513                         printf("%s# %s%s\n",
4514                                ansi_highlight_blue(),
4515                                fragment_path,
4516                                ansi_highlight_off());
4517                         fflush(stdout);
4518
4519                         r = sendfile_full(STDOUT_FILENO, fragment_path);
4520                         if (r < 0) {
4521                                 log_warning("Failed to cat %s: %s", fragment_path, strerror(-r));
4522                                 continue;
4523                         }
4524                 }
4525
4526                 STRV_FOREACH(path, dropin_paths) {
4527                         printf("%s%s# %s%s\n",
4528                                isempty(fragment_path) && path == dropin_paths ? "" : "\n",
4529                                ansi_highlight_blue(),
4530                                *path,
4531                                ansi_highlight_off());
4532                         fflush(stdout);
4533
4534                         r = sendfile_full(STDOUT_FILENO, *path);
4535                         if (r < 0) {
4536                                 log_warning("Failed to cat %s: %s", *path, strerror(-r));
4537                                 continue;
4538                         }
4539                 }
4540         }
4541
4542         return r < 0 ? r : 0;
4543 }
4544
4545 static int set_property(sd_bus *bus, char **args) {
4546         _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
4547         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4548         _cleanup_free_ char *n = NULL;
4549         char **i;
4550         int r;
4551
4552         r = sd_bus_message_new_method_call(
4553                         bus,
4554                         &m,
4555                         "org.freedesktop.systemd1",
4556                         "/org/freedesktop/systemd1",
4557                         "org.freedesktop.systemd1.Manager",
4558                         "SetUnitProperties");
4559         if (r < 0)
4560                 return bus_log_create_error(r);
4561
4562         n = unit_name_mangle(args[1], MANGLE_NOGLOB);
4563         if (!n)
4564                 return log_oom();
4565
4566         r = sd_bus_message_append(m, "sb", n, arg_runtime);
4567         if (r < 0)
4568                 return bus_log_create_error(r);
4569
4570         r = sd_bus_message_open_container(m, SD_BUS_TYPE_ARRAY, "(sv)");
4571         if (r < 0)
4572                 return bus_log_create_error(r);
4573
4574         STRV_FOREACH(i, args + 2) {
4575                 r = sd_bus_message_open_container(m, SD_BUS_TYPE_STRUCT, "sv");
4576                 if (r < 0)
4577                         return bus_log_create_error(r);
4578
4579                 r = bus_append_unit_property_assignment(m, *i);
4580                 if (r < 0)
4581                         return r;
4582
4583                 r = sd_bus_message_close_container(m);
4584                 if (r < 0)
4585                         return bus_log_create_error(r);
4586         }
4587
4588         r = sd_bus_message_close_container(m);
4589         if (r < 0)
4590                 return bus_log_create_error(r);
4591
4592         r = sd_bus_call(bus, m, 0, &error, NULL);
4593         if (r < 0) {
4594                 log_error("Failed to set unit properties on %s: %s", n, bus_error_message(&error, r));
4595                 return r;
4596         }
4597
4598         return 0;
4599 }
4600
4601 static int snapshot(sd_bus *bus, char **args) {
4602         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4603         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
4604         _cleanup_free_ char *n = NULL, *id = NULL;
4605         const char *path;
4606         int r;
4607
4608         if (strv_length(args) > 1)
4609                 n = unit_name_mangle_with_suffix(args[1], MANGLE_NOGLOB, ".snapshot");
4610         else
4611                 n = strdup("");
4612         if (!n)
4613                 return log_oom();
4614
4615         r = sd_bus_call_method(
4616                         bus,
4617                         "org.freedesktop.systemd1",
4618                         "/org/freedesktop/systemd1",
4619                         "org.freedesktop.systemd1.Manager",
4620                         "CreateSnapshot",
4621                         &error,
4622                         &reply,
4623                         "sb", n, false);
4624         if (r < 0) {
4625                 log_error("Failed to create snapshot: %s", bus_error_message(&error, r));
4626                 return r;
4627         }
4628
4629         r = sd_bus_message_read(reply, "o", &path);
4630         if (r < 0)
4631                 return bus_log_parse_error(r);
4632
4633         r = sd_bus_get_property_string(
4634                         bus,
4635                         "org.freedesktop.systemd1",
4636                         path,
4637                         "org.freedesktop.systemd1.Unit",
4638                         "Id",
4639                         &error,
4640                         &id);
4641         if (r < 0) {
4642                 log_error("Failed to get ID of snapshot: %s", bus_error_message(&error, r));
4643                 return r;
4644         }
4645
4646         if (!arg_quiet)
4647                 puts(id);
4648
4649         return 0;
4650 }
4651
4652 static int delete_snapshot(sd_bus *bus, char **args) {
4653         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4654         _cleanup_strv_free_ char **names = NULL;
4655         char **name;
4656         int r, q;
4657
4658         assert(args);
4659
4660         r = expand_names(bus, args + 1, ".snapshot", &names);
4661         if (r < 0)
4662                 log_error("Failed to expand names: %s", strerror(-r));
4663
4664         STRV_FOREACH(name, names) {
4665                 q = sd_bus_call_method(
4666                                 bus,
4667                                 "org.freedesktop.systemd1",
4668                                 "/org/freedesktop/systemd1",
4669                                 "org.freedesktop.systemd1.Manager",
4670                                 "RemoveSnapshot",
4671                                 &error,
4672                                 NULL,
4673                                 "s", *name);
4674                 if (q < 0) {
4675                         log_error("Failed to remove snapshot %s: %s",
4676                                   *name, bus_error_message(&error, r));
4677                         if (r == 0)
4678                                 r = q;
4679                 }
4680         }
4681
4682         return r;
4683 }
4684
4685 static int daemon_reload(sd_bus *bus, char **args) {
4686         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4687         const char *method;
4688         int r;
4689
4690         if (arg_action == ACTION_RELOAD)
4691                 method = "Reload";
4692         else if (arg_action == ACTION_REEXEC)
4693                 method = "Reexecute";
4694         else {
4695                 assert(arg_action == ACTION_SYSTEMCTL);
4696
4697                 method =
4698                         streq(args[0], "clear-jobs")    ||
4699                         streq(args[0], "cancel")        ? "ClearJobs" :
4700                         streq(args[0], "daemon-reexec") ? "Reexecute" :
4701                         streq(args[0], "reset-failed")  ? "ResetFailed" :
4702                         streq(args[0], "halt")          ? "Halt" :
4703                         streq(args[0], "poweroff")      ? "PowerOff" :
4704                         streq(args[0], "reboot")        ? "Reboot" :
4705                         streq(args[0], "kexec")         ? "KExec" :
4706                         streq(args[0], "exit")          ? "Exit" :
4707                                     /* "daemon-reload" */ "Reload";
4708         }
4709
4710         r = sd_bus_call_method(
4711                         bus,
4712                         "org.freedesktop.systemd1",
4713                         "/org/freedesktop/systemd1",
4714                         "org.freedesktop.systemd1.Manager",
4715                         method,
4716                         &error,
4717                         NULL,
4718                         NULL);
4719
4720         if (r == -ENOENT && arg_action != ACTION_SYSTEMCTL)
4721                 /* There's always a fallback possible for
4722                  * legacy actions. */
4723                 r = -EADDRNOTAVAIL;
4724         else if ((r == -ETIMEDOUT || r == -ECONNRESET) && streq(method, "Reexecute"))
4725                 /* On reexecution, we expect a disconnect, not a
4726                  * reply */
4727                 r = 0;
4728         else if (r < 0)
4729                 log_error("Failed to execute operation: %s", bus_error_message(&error, r));
4730
4731         return r < 0 ? r : 0;
4732 }
4733
4734 static int reset_failed(sd_bus *bus, char **args) {
4735         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4736         _cleanup_strv_free_ char **names = NULL;
4737         char **name;
4738         int r, q;
4739
4740         if (strv_length(args) <= 1)
4741                 return daemon_reload(bus, args);
4742
4743         r = expand_names(bus, args + 1, NULL, &names);
4744         if (r < 0)
4745                 log_error("Failed to expand names: %s", strerror(-r));
4746
4747         STRV_FOREACH(name, names) {
4748                 q = sd_bus_call_method(
4749                                 bus,
4750                                 "org.freedesktop.systemd1",
4751                                 "/org/freedesktop/systemd1",
4752                                 "org.freedesktop.systemd1.Manager",
4753                                 "ResetFailedUnit",
4754                                 &error,
4755                                 NULL,
4756                                 "s", *name);
4757                 if (q < 0) {
4758                         log_error("Failed to reset failed state of unit %s: %s",
4759                                   *name, bus_error_message(&error, r));
4760                         if (r == 0)
4761                                 r = q;
4762                 }
4763         }
4764
4765         return r;
4766 }
4767
4768 static int show_environment(sd_bus *bus, char **args) {
4769         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4770         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
4771         const char *text;
4772         int r;
4773
4774         pager_open_if_enabled();
4775
4776         r = sd_bus_get_property(
4777                         bus,
4778                         "org.freedesktop.systemd1",
4779                         "/org/freedesktop/systemd1",
4780                         "org.freedesktop.systemd1.Manager",
4781                         "Environment",
4782                         &error,
4783                         &reply,
4784                         "as");
4785         if (r < 0) {
4786                 log_error("Failed to get environment: %s", bus_error_message(&error, r));
4787                 return r;
4788         }
4789
4790         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "s");
4791         if (r < 0)
4792                 return bus_log_parse_error(r);
4793
4794         while ((r = sd_bus_message_read_basic(reply, SD_BUS_TYPE_STRING, &text)) > 0)
4795                 puts(text);
4796         if (r < 0)
4797                 return bus_log_parse_error(r);
4798
4799         r = sd_bus_message_exit_container(reply);
4800         if (r < 0)
4801                 return bus_log_parse_error(r);
4802
4803         return 0;
4804 }
4805
4806 static int switch_root(sd_bus *bus, char **args) {
4807         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4808         _cleanup_free_ char *cmdline_init = NULL;
4809         const char *root, *init;
4810         unsigned l;
4811         int r;
4812
4813         l = strv_length(args);
4814         if (l < 2 || l > 3) {
4815                 log_error("Wrong number of arguments.");
4816                 return -EINVAL;
4817         }
4818
4819         root = args[1];
4820
4821         if (l >= 3)
4822                 init = args[2];
4823         else {
4824                 r = parse_env_file("/proc/cmdline", WHITESPACE,
4825                                    "init", &cmdline_init,
4826                                    NULL);
4827                 if (r < 0)
4828                         log_debug("Failed to parse /proc/cmdline: %s", strerror(-r));
4829
4830                 init = cmdline_init;
4831         }
4832
4833         if (isempty(init))
4834                 init = NULL;
4835
4836         if (init) {
4837                 const char *root_systemd_path = NULL, *root_init_path = NULL;
4838
4839                 root_systemd_path = strappenda(root, "/" SYSTEMD_BINARY_PATH);
4840                 root_init_path = strappenda(root, "/", init);
4841
4842                 /* If the passed init is actually the same as the
4843                  * systemd binary, then let's suppress it. */
4844                 if (files_same(root_init_path, root_systemd_path) > 0)
4845                         init = NULL;
4846         }
4847
4848         log_debug("Switching root - root: %s; init: %s", root, strna(init));
4849
4850         r = sd_bus_call_method(
4851                         bus,
4852                         "org.freedesktop.systemd1",
4853                         "/org/freedesktop/systemd1",
4854                         "org.freedesktop.systemd1.Manager",
4855                         "SwitchRoot",
4856                         &error,
4857                         NULL,
4858                         "ss", root, init);
4859         if (r < 0) {
4860                 log_error("Failed to switch root: %s", bus_error_message(&error, r));
4861                 return r;
4862         }
4863
4864         return 0;
4865 }
4866
4867 static int set_environment(sd_bus *bus, char **args) {
4868         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4869         _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
4870         const char *method;
4871         int r;
4872
4873         assert(bus);
4874         assert(args);
4875
4876         method = streq(args[0], "set-environment")
4877                 ? "SetEnvironment"
4878                 : "UnsetEnvironment";
4879
4880         r = sd_bus_message_new_method_call(
4881                         bus,
4882                         &m,
4883                         "org.freedesktop.systemd1",
4884                         "/org/freedesktop/systemd1",
4885                         "org.freedesktop.systemd1.Manager",
4886                         method);
4887         if (r < 0)
4888                 return bus_log_create_error(r);
4889
4890         r = sd_bus_message_append_strv(m, args + 1);
4891         if (r < 0)
4892                 return bus_log_create_error(r);
4893
4894         r = sd_bus_call(bus, m, 0, &error, NULL);
4895         if (r < 0) {
4896                 log_error("Failed to set environment: %s", bus_error_message(&error, r));
4897                 return r;
4898         }
4899
4900         return 0;
4901 }
4902
4903 static int import_environment(sd_bus *bus, char **args) {
4904         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4905         _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
4906         int r;
4907
4908         assert(bus);
4909         assert(args);
4910
4911         r = sd_bus_message_new_method_call(
4912                         bus,
4913                         &m,
4914                         "org.freedesktop.systemd1",
4915                         "/org/freedesktop/systemd1",
4916                         "org.freedesktop.systemd1.Manager",
4917                         "SetEnvironment");
4918         if (r < 0)
4919                 return bus_log_create_error(r);
4920
4921         if (strv_isempty(args + 1))
4922                 r = sd_bus_message_append_strv(m, environ);
4923         else {
4924                 char **a, **b;
4925
4926                 r = sd_bus_message_open_container(m, 'a', "s");
4927                 if (r < 0)
4928                         return bus_log_create_error(r);
4929
4930                 STRV_FOREACH(a, args + 1) {
4931
4932                         if (!env_name_is_valid(*a)) {
4933                                 log_error("Not a valid environment variable name: %s", *a);
4934                                 return -EINVAL;
4935                         }
4936
4937                         STRV_FOREACH(b, environ) {
4938                                 const char *eq;
4939
4940                                 eq = startswith(*b, *a);
4941                                 if (eq && *eq == '=') {
4942
4943                                         r = sd_bus_message_append(m, "s", *b);
4944                                         if (r < 0)
4945                                                 return bus_log_create_error(r);
4946
4947                                         break;
4948                                 }
4949                         }
4950                 }
4951
4952                 r = sd_bus_message_close_container(m);
4953         }
4954         if (r < 0)
4955                 return bus_log_create_error(r);
4956
4957         r = sd_bus_call(bus, m, 0, &error, NULL);
4958         if (r < 0) {
4959                 log_error("Failed to import environment: %s", bus_error_message(&error, r));
4960                 return r;
4961         }
4962
4963         return 0;
4964 }
4965
4966 static int enable_sysv_units(const char *verb, char **args) {
4967         int r = 0;
4968
4969 #if defined(HAVE_SYSV_COMPAT) && defined(HAVE_CHKCONFIG)
4970         unsigned f = 1, t = 1;
4971         _cleanup_lookup_paths_free_ LookupPaths paths = {};
4972
4973         if (arg_scope != UNIT_FILE_SYSTEM)
4974                 return 0;
4975
4976         if (!streq(verb, "enable") &&
4977             !streq(verb, "disable") &&
4978             !streq(verb, "is-enabled"))
4979                 return 0;
4980
4981         /* Processes all SysV units, and reshuffles the array so that
4982          * afterwards only the native units remain */
4983
4984         r = lookup_paths_init(&paths, SYSTEMD_SYSTEM, false, arg_root, NULL, NULL, NULL);
4985         if (r < 0)
4986                 return r;
4987
4988         r = 0;
4989         for (f = 0; args[f]; f++) {
4990                 const char *name;
4991                 _cleanup_free_ char *p = NULL, *q = NULL, *l = NULL;
4992                 bool found_native = false, found_sysv;
4993                 unsigned c = 1;
4994                 const char *argv[6] = { "/sbin/chkconfig", NULL, NULL, NULL, NULL };
4995                 char **k;
4996                 int j;
4997                 pid_t pid;
4998                 siginfo_t status;
4999
5000                 name = args[f];
5001
5002                 if (!endswith(name, ".service"))
5003                         continue;
5004
5005                 if (path_is_absolute(name))
5006                         continue;
5007
5008                 STRV_FOREACH(k, paths.unit_path) {
5009                         _cleanup_free_ char *path = NULL;
5010
5011                         path = path_join(arg_root, *k, name);
5012                         if (!path)
5013                                 return log_oom();
5014
5015                         found_native = access(path, F_OK) >= 0;
5016                         if (found_native)
5017                                 break;
5018                 }
5019
5020                 if (found_native)
5021                         continue;
5022
5023                 p = path_join(arg_root, SYSTEM_SYSVINIT_PATH, name);
5024                 if (!p)
5025                         return log_oom();
5026
5027                 p[strlen(p) - strlen(".service")] = 0;
5028                 found_sysv = access(p, F_OK) >= 0;
5029                 if (!found_sysv)
5030                         continue;
5031
5032                 /* Mark this entry, so that we don't try enabling it as native unit */
5033                 args[f] = (char*) "";
5034
5035                 log_info("%s is not a native service, redirecting to /sbin/chkconfig.", name);
5036
5037                 if (!isempty(arg_root))
5038                         argv[c++] = q = strappend("--root=", arg_root);
5039
5040                 argv[c++] = basename(p);
5041                 argv[c++] =
5042                         streq(verb, "enable") ? "on" :
5043                         streq(verb, "disable") ? "off" : "--level=5";
5044                 argv[c] = NULL;
5045
5046                 l = strv_join((char**)argv, " ");
5047                 if (!l)
5048                         return log_oom();
5049
5050                 log_info("Executing %s", l);
5051
5052                 pid = fork();
5053                 if (pid < 0) {
5054                         log_error("Failed to fork: %m");
5055                         return -errno;
5056                 } else if (pid == 0) {
5057                         /* Child */
5058
5059                         execv(argv[0], (char**) argv);
5060                         _exit(EXIT_FAILURE);
5061                 }
5062
5063                 j = wait_for_terminate(pid, &status);
5064                 if (j < 0) {
5065                         log_error("Failed to wait for child: %s", strerror(-r));
5066                         return j;
5067                 }
5068
5069                 if (status.si_code == CLD_EXITED) {
5070                         if (streq(verb, "is-enabled")) {
5071                                 if (status.si_status == 0) {
5072                                         if (!arg_quiet)
5073                                                 puts("enabled");
5074                                         r = 1;
5075                                 } else {
5076                                         if (!arg_quiet)
5077                                                 puts("disabled");
5078                                 }
5079
5080                         } else if (status.si_status != 0)
5081                                 return -EINVAL;
5082                 } else
5083                         return -EPROTO;
5084         }
5085
5086         /* Drop all SysV units */
5087         for (f = 0, t = 0; args[f]; f++) {
5088
5089                 if (isempty(args[f]))
5090                         continue;
5091
5092                 args[t++] = args[f];
5093         }
5094
5095         args[t] = NULL;
5096
5097 #endif
5098         return r;
5099 }
5100
5101 static int mangle_names(char **original_names, char ***mangled_names) {
5102         char **i, **l, **name;
5103
5104         l = new(char*, strv_length(original_names) + 1);
5105         if (!l)
5106                 return log_oom();
5107
5108         i = l;
5109         STRV_FOREACH(name, original_names) {
5110
5111                 /* When enabling units qualified path names are OK,
5112                  * too, hence allow them explicitly. */
5113
5114                 if (is_path(*name))
5115                         *i = strdup(*name);
5116                 else
5117                         *i = unit_name_mangle(*name, MANGLE_NOGLOB);
5118
5119                 if (!*i) {
5120                         strv_free(l);
5121                         return log_oom();
5122                 }
5123
5124                 i++;
5125         }
5126
5127         *i = NULL;
5128         *mangled_names = l;
5129
5130         return 0;
5131 }
5132
5133 static int enable_unit(sd_bus *bus, char **args) {
5134         _cleanup_strv_free_ char **names = NULL;
5135         const char *verb = args[0];
5136         UnitFileChange *changes = NULL;
5137         unsigned n_changes = 0;
5138         int carries_install_info = -1;
5139         int r;
5140
5141         if (!args[1])
5142                 return 0;
5143
5144         r = mangle_names(args+1, &names);
5145         if (r < 0)
5146                 return r;
5147
5148         r = enable_sysv_units(verb, names);
5149         if (r < 0)
5150                 return r;
5151
5152         /* If the operation was fully executed by the SysV compat,
5153          * let's finish early */
5154         if (strv_isempty(names))
5155                 return 0;
5156
5157         if (!bus || avoid_bus()) {
5158                 if (streq(verb, "enable")) {
5159                         r = unit_file_enable(arg_scope, arg_runtime, arg_root, names, arg_force, &changes, &n_changes);
5160                         carries_install_info = r;
5161                 } else if (streq(verb, "disable"))
5162                         r = unit_file_disable(arg_scope, arg_runtime, arg_root, names, &changes, &n_changes);
5163                 else if (streq(verb, "reenable")) {
5164                         r = unit_file_reenable(arg_scope, arg_runtime, arg_root, names, arg_force, &changes, &n_changes);
5165                         carries_install_info = r;
5166                 } else if (streq(verb, "link"))
5167                         r = unit_file_link(arg_scope, arg_runtime, arg_root, names, arg_force, &changes, &n_changes);
5168                 else if (streq(verb, "preset")) {
5169                         r = unit_file_preset(arg_scope, arg_runtime, arg_root, names, arg_preset_mode, arg_force, &changes, &n_changes);
5170                         carries_install_info = r;
5171                 } else if (streq(verb, "mask"))
5172                         r = unit_file_mask(arg_scope, arg_runtime, arg_root, names, arg_force, &changes, &n_changes);
5173                 else if (streq(verb, "unmask"))
5174                         r = unit_file_unmask(arg_scope, arg_runtime, arg_root, names, &changes, &n_changes);
5175                 else
5176                         assert_not_reached("Unknown verb");
5177
5178                 if (r < 0) {
5179                         log_error("Operation failed: %s", strerror(-r));
5180                         goto finish;
5181                 }
5182
5183                 if (!arg_quiet)
5184                         dump_unit_file_changes(changes, n_changes);
5185
5186                 r = 0;
5187         } else {
5188                 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL, *m = NULL;
5189                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
5190                 int expect_carries_install_info = false;
5191                 bool send_force = true, send_preset_mode = false;
5192                 const char *method;
5193
5194                 if (streq(verb, "enable")) {
5195                         method = "EnableUnitFiles";
5196                         expect_carries_install_info = true;
5197                 } else if (streq(verb, "disable")) {
5198                         method = "DisableUnitFiles";
5199                         send_force = false;
5200                 } else if (streq(verb, "reenable")) {
5201                         method = "ReenableUnitFiles";
5202                         expect_carries_install_info = true;
5203                 } else if (streq(verb, "link"))
5204                         method = "LinkUnitFiles";
5205                 else if (streq(verb, "preset")) {
5206
5207                         if (arg_preset_mode != UNIT_FILE_PRESET_FULL) {
5208                                 method = "PresetUnitFilesWithMode";
5209                                 send_preset_mode = true;
5210                         } else
5211                                 method = "PresetUnitFiles";
5212
5213                         expect_carries_install_info = true;
5214                 } else if (streq(verb, "mask"))
5215                         method = "MaskUnitFiles";
5216                 else if (streq(verb, "unmask")) {
5217                         method = "UnmaskUnitFiles";
5218                         send_force = false;
5219                 } else
5220                         assert_not_reached("Unknown verb");
5221
5222                 r = sd_bus_message_new_method_call(
5223                                 bus,
5224                                 &m,
5225                                 "org.freedesktop.systemd1",
5226                                 "/org/freedesktop/systemd1",
5227                                 "org.freedesktop.systemd1.Manager",
5228                                 method);
5229                 if (r < 0)
5230                         return bus_log_create_error(r);
5231
5232                 r = sd_bus_message_append_strv(m, names);
5233                 if (r < 0)
5234                         return bus_log_create_error(r);
5235
5236                 if (send_preset_mode) {
5237                         r = sd_bus_message_append(m, "s", unit_file_preset_mode_to_string(arg_preset_mode));
5238                         if (r < 0)
5239                                 return bus_log_create_error(r);
5240                 }
5241
5242                 r = sd_bus_message_append(m, "b", arg_runtime);
5243                 if (r < 0)
5244                         return bus_log_create_error(r);
5245
5246                 if (send_force) {
5247                         r = sd_bus_message_append(m, "b", arg_force);
5248                         if (r < 0)
5249                                 return bus_log_create_error(r);
5250                 }
5251
5252                 r = sd_bus_call(bus, m, 0, &error, &reply);
5253                 if (r < 0) {
5254                         log_error("Failed to execute operation: %s", bus_error_message(&error, r));
5255                         return r;
5256                 }
5257
5258                 if (expect_carries_install_info) {
5259                         r = sd_bus_message_read(reply, "b", &carries_install_info);
5260                         if (r < 0)
5261                                 return bus_log_parse_error(r);
5262                 }
5263
5264                 r = deserialize_and_dump_unit_file_changes(reply);
5265                 if (r < 0)
5266                         return r;
5267
5268                 /* Try to reload if enabled */
5269                 if (!arg_no_reload)
5270                         r = daemon_reload(bus, args);
5271                 else
5272                         r = 0;
5273         }
5274
5275         if (carries_install_info == 0)
5276                 log_warning("The unit files have no [Install] section. They are not meant to be enabled\n"
5277                             "using systemctl.\n"
5278                             "Possible reasons for having this kind of units are:\n"
5279                             "1) A unit may be statically enabled by being symlinked from another unit's\n"
5280                             "   .wants/ or .requires/ directory.\n"
5281                             "2) A unit's purpose may be to act as a helper for some other unit which has\n"
5282                             "   a requirement dependency on it.\n"
5283                             "3) A unit may be started when needed via activation (socket, path, timer,\n"
5284                             "   D-Bus, udev, scripted systemctl call, ...).\n");
5285
5286 finish:
5287         unit_file_changes_free(changes, n_changes);
5288
5289         return r;
5290 }
5291
5292 static int preset_all(sd_bus *bus, char **args) {
5293         UnitFileChange *changes = NULL;
5294         unsigned n_changes = 0;
5295         int r;
5296
5297         if (!bus || avoid_bus()) {
5298
5299                 r = unit_file_preset_all(arg_scope, arg_runtime, arg_root, arg_preset_mode, arg_force, &changes, &n_changes);
5300                 if (r < 0) {
5301                         log_error("Operation failed: %s", strerror(-r));
5302                         goto finish;
5303                 }
5304
5305                 if (!arg_quiet)
5306                         dump_unit_file_changes(changes, n_changes);
5307
5308                 r = 0;
5309
5310         } else {
5311                 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
5312                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
5313
5314                 r = sd_bus_call_method(
5315                                 bus,
5316                                 "org.freedesktop.systemd1",
5317                                 "/org/freedesktop/systemd1",
5318                                 "org.freedesktop.systemd1.Manager",
5319                                 "PresetAllUnitFiles",
5320                                 &error,
5321                                 &reply,
5322                                 "sbb",
5323                                 unit_file_preset_mode_to_string(arg_preset_mode),
5324                                 arg_runtime,
5325                                 arg_force);
5326                 if (r < 0) {
5327                         log_error("Failed to execute operation: %s", bus_error_message(&error, r));
5328                         return r;
5329                 }
5330
5331                 r = deserialize_and_dump_unit_file_changes(reply);
5332                 if (r < 0)
5333                         return r;
5334
5335                 if (!arg_no_reload)
5336                         r = daemon_reload(bus, args);
5337                 else
5338                         r = 0;
5339         }
5340
5341 finish:
5342         unit_file_changes_free(changes, n_changes);
5343
5344         return r;
5345 }
5346
5347 static int unit_is_enabled(sd_bus *bus, char **args) {
5348
5349         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
5350         _cleanup_strv_free_ char **names = NULL;
5351         bool enabled;
5352         char **name;
5353         int r;
5354
5355         r = mangle_names(args+1, &names);
5356         if (r < 0)
5357                 return r;
5358
5359         r = enable_sysv_units(args[0], names);
5360         if (r < 0)
5361                 return r;
5362
5363         enabled = r > 0;
5364
5365         if (!bus || avoid_bus()) {
5366
5367                 STRV_FOREACH(name, names) {
5368                         UnitFileState state;
5369
5370                         state = unit_file_get_state(arg_scope, arg_root, *name);
5371                         if (state < 0) {
5372                                 log_error("Failed to get unit file state for %s: %s", *name, strerror(-state));
5373                                 return state;
5374                         }
5375
5376                         if (state == UNIT_FILE_ENABLED ||
5377                             state == UNIT_FILE_ENABLED_RUNTIME ||
5378                             state == UNIT_FILE_STATIC)
5379                                 enabled = true;
5380
5381                         if (!arg_quiet)
5382                                 puts(unit_file_state_to_string(state));
5383                 }
5384
5385         } else {
5386                 STRV_FOREACH(name, names) {
5387                         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
5388                         const char *s;
5389
5390                         r = sd_bus_call_method(
5391                                         bus,
5392                                         "org.freedesktop.systemd1",
5393                                         "/org/freedesktop/systemd1",
5394                                         "org.freedesktop.systemd1.Manager",
5395                                         "GetUnitFileState",
5396                                         &error,
5397                                         &reply,
5398                                         "s", *name);
5399                         if (r < 0) {
5400                                 log_error("Failed to get unit file state for %s: %s", *name, bus_error_message(&error, r));
5401                                 return r;
5402                         }
5403
5404                         r = sd_bus_message_read(reply, "s", &s);
5405                         if (r < 0)
5406                                 return bus_log_parse_error(r);
5407
5408                         if (streq(s, "enabled") ||
5409                             streq(s, "enabled-runtime") ||
5410                             streq(s, "static"))
5411                                 enabled = true;
5412
5413                         if (!arg_quiet)
5414                                 puts(s);
5415                 }
5416         }
5417
5418         return !enabled;
5419 }
5420
5421 static int is_system_running(sd_bus *bus, char **args) {
5422         _cleanup_free_ char *state = NULL;
5423         int r;
5424
5425         r = sd_bus_get_property_string(
5426                         bus,
5427                         "org.freedesktop.systemd1",
5428                         "/org/freedesktop/systemd1",
5429                         "org.freedesktop.systemd1.Manager",
5430                         "SystemState",
5431                         NULL,
5432                         &state);
5433         if (r < 0) {
5434                 if (!arg_quiet)
5435                         puts("unknown");
5436                 return 0;
5437         }
5438
5439         if (!arg_quiet)
5440                 puts(state);
5441
5442         return streq(state, "running") ? EXIT_SUCCESS : EXIT_FAILURE;
5443 }
5444
5445 static void systemctl_help(void) {
5446
5447         pager_open_if_enabled();
5448
5449         printf("%s [OPTIONS...] {COMMAND} ...\n\n"
5450                "Query or send control commands to the systemd manager.\n\n"
5451                "  -h --help           Show this help\n"
5452                "     --version        Show package version\n"
5453                "     --system         Connect to system manager\n"
5454                "     --user           Connect to user service manager\n"
5455                "  -H --host=[USER@]HOST\n"
5456                "                      Operate on remote host\n"
5457                "  -M --machine=CONTAINER\n"
5458                "                      Operate on local container\n"
5459                "  -t --type=TYPE      List only units of a particular type\n"
5460                "     --state=STATE    List only units with particular LOAD or SUB or ACTIVE state\n"
5461                "  -p --property=NAME  Show only properties by this name\n"
5462                "  -a --all            Show all loaded units/properties, including dead/empty\n"
5463                "                      ones. To list all units installed on the system, use\n"
5464                "                      the 'list-unit-files' command instead.\n"
5465                "  -l --full           Don't ellipsize unit names on output\n"
5466                "  -r --recursive      Show unit list of host and local containers\n"
5467                "     --reverse        Show reverse dependencies with 'list-dependencies'\n"
5468                "     --job-mode=MODE  Specify how to deal with already queued jobs, when\n"
5469                "                      queueing a new job\n"
5470                "     --show-types     When showing sockets, explicitly show their type\n"
5471                "  -i --ignore-inhibitors\n"
5472                "                      When shutting down or sleeping, ignore inhibitors\n"
5473                "     --kill-who=WHO   Who to send signal to\n"
5474                "  -s --signal=SIGNAL  Which signal to send\n"
5475                "  -q --quiet          Suppress output\n"
5476                "     --no-block       Do not wait until operation finished\n"
5477                "     --no-wall        Don't send wall message before halt/power-off/reboot\n"
5478                "     --no-reload      When enabling/disabling unit files, don't reload daemon\n"
5479                "                      configuration\n"
5480                "     --no-legend      Do not print a legend (column headers and hints)\n"
5481                "     --no-pager       Do not pipe output into a pager\n"
5482                "     --no-ask-password\n"
5483                "                      Do not ask for system passwords\n"
5484                "     --global         Enable/disable unit files globally\n"
5485                "     --runtime        Enable unit files only temporarily until next reboot\n"
5486                "  -f --force          When enabling unit files, override existing symlinks\n"
5487                "                      When shutting down, execute action immediately\n"
5488                "     --preset-mode=   Specifies whether fully apply presets, or only enable,\n"
5489                "                      or only disable\n"
5490                "     --root=PATH      Enable unit files in the specified root directory\n"
5491                "  -n --lines=INTEGER  Number of journal entries to show\n"
5492                "  -o --output=STRING  Change journal output mode (short, short-monotonic,\n"
5493                "                      verbose, export, json, json-pretty, json-sse, cat)\n"
5494                "     --plain          Print unit dependencies as a list instead of a tree\n\n"
5495                "Unit Commands:\n"
5496                "  list-units [PATTERN...]         List loaded units\n"
5497                "  list-sockets [PATTERN...]       List loaded sockets ordered by address\n"
5498                "  list-timers [PATTERN...]        List loaded timers ordered by next elapse\n"
5499                "  start NAME...                   Start (activate) one or more units\n"
5500                "  stop NAME...                    Stop (deactivate) one or more units\n"
5501                "  reload NAME...                  Reload one or more units\n"
5502                "  restart NAME...                 Start or restart one or more units\n"
5503                "  try-restart NAME...             Restart one or more units if active\n"
5504                "  reload-or-restart NAME...       Reload one or more units if possible,\n"
5505                "                                  otherwise start or restart\n"
5506                "  reload-or-try-restart NAME...   Reload one or more units if possible,\n"
5507                "                                  otherwise restart if active\n"
5508                "  isolate NAME                    Start one unit and stop all others\n"
5509                "  kill NAME...                    Send signal to processes of a unit\n"
5510                "  is-active PATTERN...            Check whether units are active\n"
5511                "  is-failed PATTERN...            Check whether units are failed\n"
5512                "  status [PATTERN...|PID...]      Show runtime status of one or more units\n"
5513                "  show [PATTERN...|JOB...]        Show properties of one or more\n"
5514                "                                  units/jobs or the manager\n"
5515                "  cat PATTERN...                  Show files and drop-ins of one or more units\n"
5516                "  set-property NAME ASSIGNMENT... Sets one or more properties of a unit\n"
5517                "  help PATTERN...|PID...          Show manual for one or more units\n"
5518                "  reset-failed [PATTERN...]       Reset failed state for all, one, or more\n"
5519                "                                  units\n"
5520                "  list-dependencies [NAME]        Recursively show units which are required\n"
5521                "                                  or wanted by this unit or by which this\n"
5522                "                                  unit is required or wanted\n\n"
5523                "Unit File Commands:\n"
5524                "  list-unit-files [PATTERN...]    List installed unit files\n"
5525                "  enable NAME...                  Enable one or more unit files\n"
5526                "  disable NAME...                 Disable one or more unit files\n"
5527                "  reenable NAME...                Reenable one or more unit files\n"
5528                "  preset NAME...                  Enable/disable one or more unit files\n"
5529                "                                  based on preset configuration\n"
5530                "  preset-all                      Enable/disable all unit files based on\n"
5531                "                                  preset configuration\n"
5532                "  is-enabled NAME...              Check whether unit files are enabled\n\n"
5533                "  mask NAME...                    Mask one or more units\n"
5534                "  unmask NAME...                  Unmask one or more units\n"
5535                "  link PATH...                    Link one or more units files into\n"
5536                "                                  the search path\n"
5537                "  get-default                     Get the name of the default target\n"
5538                "  set-default NAME                Set the default target\n\n"
5539                "Machine Commands:\n"
5540                "  list-machines [PATTERN...]      List local containers and host\n\n"
5541                "Job Commands:\n"
5542                "  list-jobs [PATTERN...]          List jobs\n"
5543                "  cancel [JOB...]                 Cancel all, one, or more jobs\n\n"
5544                "Snapshot Commands:\n"
5545                "  snapshot [NAME]                 Create a snapshot\n"
5546                "  delete NAME...                  Remove one or more snapshots\n\n"
5547                "Environment Commands:\n"
5548                "  show-environment                Dump environment\n"
5549                "  set-environment NAME=VALUE...   Set one or more environment variables\n"
5550                "  unset-environment NAME...       Unset one or more environment variables\n"
5551                "  import-environment NAME...      Import all, one or more environment variables\n\n"
5552                "Manager Lifecycle Commands:\n"
5553                "  daemon-reload                   Reload systemd manager configuration\n"
5554                "  daemon-reexec                   Reexecute systemd manager\n\n"
5555                "System Commands:\n"
5556                "  is-system-running               Check whether system is fully running\n"
5557                "  default                         Enter system default mode\n"
5558                "  rescue                          Enter system rescue mode\n"
5559                "  emergency                       Enter system emergency mode\n"
5560                "  halt                            Shut down and halt the system\n"
5561                "  poweroff                        Shut down and power-off the system\n"
5562                "  reboot [ARG]                    Shut down and reboot the system\n"
5563                "  kexec                           Shut down and reboot the system with kexec\n"
5564                "  exit                            Request user instance exit\n"
5565                "  switch-root ROOT [INIT]         Change to a different root file system\n"
5566                "  suspend                         Suspend the system\n"
5567                "  hibernate                       Hibernate the system\n"
5568                "  hybrid-sleep                    Hibernate and suspend the system\n",
5569                program_invocation_short_name);
5570 }
5571
5572 static void halt_help(void) {
5573         printf("%s [OPTIONS...]%s\n\n"
5574                "%s the system.\n\n"
5575                "     --help      Show this help\n"
5576                "     --halt      Halt the machine\n"
5577                "  -p --poweroff  Switch off the machine\n"
5578                "     --reboot    Reboot the machine\n"
5579                "  -f --force     Force immediate halt/power-off/reboot\n"
5580                "  -w --wtmp-only Don't halt/power-off/reboot, just write wtmp record\n"
5581                "  -d --no-wtmp   Don't write wtmp record\n"
5582                "     --no-wall   Don't send wall message before halt/power-off/reboot\n",
5583                program_invocation_short_name,
5584                arg_action == ACTION_REBOOT   ? " [ARG]" : "",
5585                arg_action == ACTION_REBOOT   ? "Reboot" :
5586                arg_action == ACTION_POWEROFF ? "Power off" :
5587                                                "Halt");
5588 }
5589
5590 static void shutdown_help(void) {
5591         printf("%s [OPTIONS...] [TIME] [WALL...]\n\n"
5592                "Shut down the system.\n\n"
5593                "     --help      Show this help\n"
5594                "  -H --halt      Halt the machine\n"
5595                "  -P --poweroff  Power-off the machine\n"
5596                "  -r --reboot    Reboot the machine\n"
5597                "  -h             Equivalent to --poweroff, overridden by --halt\n"
5598                "  -k             Don't halt/power-off/reboot, just send warnings\n"
5599                "     --no-wall   Don't send wall message before halt/power-off/reboot\n"
5600                "  -c             Cancel a pending shutdown\n",
5601                program_invocation_short_name);
5602 }
5603
5604 static void telinit_help(void) {
5605         printf("%s [OPTIONS...] {COMMAND}\n\n"
5606                "Send control commands to the init daemon.\n\n"
5607                "     --help      Show this help\n"
5608                "     --no-wall   Don't send wall message before halt/power-off/reboot\n\n"
5609                "Commands:\n"
5610                "  0              Power-off the machine\n"
5611                "  6              Reboot the machine\n"
5612                "  2, 3, 4, 5     Start runlevelX.target unit\n"
5613                "  1, s, S        Enter rescue mode\n"
5614                "  q, Q           Reload init daemon configuration\n"
5615                "  u, U           Reexecute init daemon\n",
5616                program_invocation_short_name);
5617 }
5618
5619 static void runlevel_help(void) {
5620         printf("%s [OPTIONS...]\n\n"
5621                "Prints the previous and current runlevel of the init system.\n\n"
5622                "     --help      Show this help\n",
5623                program_invocation_short_name);
5624 }
5625
5626 static void help_types(void) {
5627         int i;
5628         const char *t;
5629
5630         if (!arg_no_legend)
5631                 puts("Available unit types:");
5632         for (i = 0; i < _UNIT_TYPE_MAX; i++) {
5633                 t = unit_type_to_string(i);
5634                 if (t)
5635                         puts(t);
5636         }
5637 }
5638
5639 static int systemctl_parse_argv(int argc, char *argv[]) {
5640
5641         enum {
5642                 ARG_FAIL = 0x100,
5643                 ARG_REVERSE,
5644                 ARG_AFTER,
5645                 ARG_BEFORE,
5646                 ARG_SHOW_TYPES,
5647                 ARG_IRREVERSIBLE,
5648                 ARG_IGNORE_DEPENDENCIES,
5649                 ARG_VERSION,
5650                 ARG_USER,
5651                 ARG_SYSTEM,
5652                 ARG_GLOBAL,
5653                 ARG_NO_BLOCK,
5654                 ARG_NO_LEGEND,
5655                 ARG_NO_PAGER,
5656                 ARG_NO_WALL,
5657                 ARG_ROOT,
5658                 ARG_NO_RELOAD,
5659                 ARG_KILL_WHO,
5660                 ARG_NO_ASK_PASSWORD,
5661                 ARG_FAILED,
5662                 ARG_RUNTIME,
5663                 ARG_FORCE,
5664                 ARG_PLAIN,
5665                 ARG_STATE,
5666                 ARG_JOB_MODE,
5667                 ARG_PRESET_MODE,
5668         };
5669
5670         static const struct option options[] = {
5671                 { "help",                no_argument,       NULL, 'h'                     },
5672                 { "version",             no_argument,       NULL, ARG_VERSION             },
5673                 { "type",                required_argument, NULL, 't'                     },
5674                 { "property",            required_argument, NULL, 'p'                     },
5675                 { "all",                 no_argument,       NULL, 'a'                     },
5676                 { "reverse",             no_argument,       NULL, ARG_REVERSE             },
5677                 { "after",               no_argument,       NULL, ARG_AFTER               },
5678                 { "before",              no_argument,       NULL, ARG_BEFORE              },
5679                 { "show-types",          no_argument,       NULL, ARG_SHOW_TYPES          },
5680                 { "failed",              no_argument,       NULL, ARG_FAILED              }, /* compatibility only */
5681                 { "full",                no_argument,       NULL, 'l'                     },
5682                 { "job-mode",            required_argument, NULL, ARG_JOB_MODE            },
5683                 { "fail",                no_argument,       NULL, ARG_FAIL                }, /* compatibility only */
5684                 { "irreversible",        no_argument,       NULL, ARG_IRREVERSIBLE        }, /* compatibility only */
5685                 { "ignore-dependencies", no_argument,       NULL, ARG_IGNORE_DEPENDENCIES }, /* compatibility only */
5686                 { "ignore-inhibitors",   no_argument,       NULL, 'i'                     },
5687                 { "user",                no_argument,       NULL, ARG_USER                },
5688                 { "system",              no_argument,       NULL, ARG_SYSTEM              },
5689                 { "global",              no_argument,       NULL, ARG_GLOBAL              },
5690                 { "no-block",            no_argument,       NULL, ARG_NO_BLOCK            },
5691                 { "no-legend",           no_argument,       NULL, ARG_NO_LEGEND           },
5692                 { "no-pager",            no_argument,       NULL, ARG_NO_PAGER            },
5693                 { "no-wall",             no_argument,       NULL, ARG_NO_WALL             },
5694                 { "quiet",               no_argument,       NULL, 'q'                     },
5695                 { "root",                required_argument, NULL, ARG_ROOT                },
5696                 { "force",               no_argument,       NULL, ARG_FORCE               },
5697                 { "no-reload",           no_argument,       NULL, ARG_NO_RELOAD           },
5698                 { "kill-who",            required_argument, NULL, ARG_KILL_WHO            },
5699                 { "signal",              required_argument, NULL, 's'                     },
5700                 { "no-ask-password",     no_argument,       NULL, ARG_NO_ASK_PASSWORD     },
5701                 { "host",                required_argument, NULL, 'H'                     },
5702                 { "machine",             required_argument, NULL, 'M'                     },
5703                 { "runtime",             no_argument,       NULL, ARG_RUNTIME             },
5704                 { "lines",               required_argument, NULL, 'n'                     },
5705                 { "output",              required_argument, NULL, 'o'                     },
5706                 { "plain",               no_argument,       NULL, ARG_PLAIN               },
5707                 { "state",               required_argument, NULL, ARG_STATE               },
5708                 { "recursive",           no_argument,       NULL, 'r'                     },
5709                 { "preset-mode",         required_argument, NULL, ARG_PRESET_MODE         },
5710                 {}
5711         };
5712
5713         int c;
5714
5715         assert(argc >= 0);
5716         assert(argv);
5717
5718         while ((c = getopt_long(argc, argv, "ht:p:alqfs:H:M:n:o:ir", options, NULL)) >= 0)
5719
5720                 switch (c) {
5721
5722                 case 'h':
5723                         systemctl_help();
5724                         return 0;
5725
5726                 case ARG_VERSION:
5727                         puts(PACKAGE_STRING);
5728                         puts(SYSTEMD_FEATURES);
5729                         return 0;
5730
5731                 case 't': {
5732                         const char *word, *state;
5733                         size_t size;
5734
5735                         FOREACH_WORD_SEPARATOR(word, size, optarg, ",", state) {
5736                                 _cleanup_free_ char *type;
5737
5738                                 type = strndup(word, size);
5739                                 if (!type)
5740                                         return -ENOMEM;
5741
5742                                 if (streq(type, "help")) {
5743                                         help_types();
5744                                         return 0;
5745                                 }
5746
5747                                 if (unit_type_from_string(type) >= 0) {
5748                                         if (strv_push(&arg_types, type))
5749                                                 return log_oom();
5750                                         type = NULL;
5751                                         continue;
5752                                 }
5753
5754                                 /* It's much nicer to use --state= for
5755                                  * load states, but let's support this
5756                                  * in --types= too for compatibility
5757                                  * with old versions */
5758                                 if (unit_load_state_from_string(optarg) >= 0) {
5759                                         if (strv_push(&arg_states, type) < 0)
5760                                                 return log_oom();
5761                                         type = NULL;
5762                                         continue;
5763                                 }
5764
5765                                 log_error("Unknown unit type or load state '%s'.", type);
5766                                 log_info("Use -t help to see a list of allowed values.");
5767                                 return -EINVAL;
5768                         }
5769
5770                         break;
5771                 }
5772
5773                 case 'p': {
5774                         /* Make sure that if the empty property list
5775                            was specified, we won't show any properties. */
5776                         if (isempty(optarg) && !arg_properties) {
5777                                 arg_properties = new0(char*, 1);
5778                                 if (!arg_properties)
5779                                         return log_oom();
5780                         } else {
5781                                 const char *word, *state;
5782                                 size_t size;
5783
5784                                 FOREACH_WORD_SEPARATOR(word, size, optarg, ",", state) {
5785                                         char *prop;
5786
5787                                         prop = strndup(word, size);
5788                                         if (!prop)
5789                                                 return log_oom();
5790
5791                                         if (strv_consume(&arg_properties, prop) < 0)
5792                                                 return log_oom();
5793                                 }
5794                         }
5795
5796                         /* If the user asked for a particular
5797                          * property, show it to him, even if it is
5798                          * empty. */
5799                         arg_all = true;
5800
5801                         break;
5802                 }
5803
5804                 case 'a':
5805                         arg_all = true;
5806                         break;
5807
5808                 case ARG_REVERSE:
5809                         arg_dependency = DEPENDENCY_REVERSE;
5810                         break;
5811
5812                 case ARG_AFTER:
5813                         arg_dependency = DEPENDENCY_AFTER;
5814                         break;
5815
5816                 case ARG_BEFORE:
5817                         arg_dependency = DEPENDENCY_BEFORE;
5818                         break;
5819
5820                 case ARG_SHOW_TYPES:
5821                         arg_show_types = true;
5822                         break;
5823
5824                 case ARG_JOB_MODE:
5825                         arg_job_mode = optarg;
5826                         break;
5827
5828                 case ARG_FAIL:
5829                         arg_job_mode = "fail";
5830                         break;
5831
5832                 case ARG_IRREVERSIBLE:
5833                         arg_job_mode = "replace-irreversibly";
5834                         break;
5835
5836                 case ARG_IGNORE_DEPENDENCIES:
5837                         arg_job_mode = "ignore-dependencies";
5838                         break;
5839
5840                 case ARG_USER:
5841                         arg_scope = UNIT_FILE_USER;
5842                         break;
5843
5844                 case ARG_SYSTEM:
5845                         arg_scope = UNIT_FILE_SYSTEM;
5846                         break;
5847
5848                 case ARG_GLOBAL:
5849                         arg_scope = UNIT_FILE_GLOBAL;
5850                         break;
5851
5852                 case ARG_NO_BLOCK:
5853                         arg_no_block = true;
5854                         break;
5855
5856                 case ARG_NO_LEGEND:
5857                         arg_no_legend = true;
5858                         break;
5859
5860                 case ARG_NO_PAGER:
5861                         arg_no_pager = true;
5862                         break;
5863
5864                 case ARG_NO_WALL:
5865                         arg_no_wall = true;
5866                         break;
5867
5868                 case ARG_ROOT:
5869                         arg_root = optarg;
5870                         break;
5871
5872                 case 'l':
5873                         arg_full = true;
5874                         break;
5875
5876                 case ARG_FAILED:
5877                         if (strv_extend(&arg_states, "failed") < 0)
5878                                 return log_oom();
5879
5880                         break;
5881
5882                 case 'q':
5883                         arg_quiet = true;
5884                         break;
5885
5886                 case ARG_FORCE:
5887                         arg_force ++;
5888                         break;
5889
5890                 case 'f':
5891                         arg_force ++;
5892                         break;
5893
5894                 case ARG_NO_RELOAD:
5895                         arg_no_reload = true;
5896                         break;
5897
5898                 case ARG_KILL_WHO:
5899                         arg_kill_who = optarg;
5900                         break;
5901
5902                 case 's':
5903                         if ((arg_signal = signal_from_string_try_harder(optarg)) < 0) {
5904                                 log_error("Failed to parse signal string %s.", optarg);
5905                                 return -EINVAL;
5906                         }
5907                         break;
5908
5909                 case ARG_NO_ASK_PASSWORD:
5910                         arg_ask_password = false;
5911                         break;
5912
5913                 case 'H':
5914                         arg_transport = BUS_TRANSPORT_REMOTE;
5915                         arg_host = optarg;
5916                         break;
5917
5918                 case 'M':
5919                         arg_transport = BUS_TRANSPORT_CONTAINER;
5920                         arg_host = optarg;
5921                         break;
5922
5923                 case ARG_RUNTIME:
5924                         arg_runtime = true;
5925                         break;
5926
5927                 case 'n':
5928                         if (safe_atou(optarg, &arg_lines) < 0) {
5929                                 log_error("Failed to parse lines '%s'", optarg);
5930                                 return -EINVAL;
5931                         }
5932                         break;
5933
5934                 case 'o':
5935                         arg_output = output_mode_from_string(optarg);
5936                         if (arg_output < 0) {
5937                                 log_error("Unknown output '%s'.", optarg);
5938                                 return -EINVAL;
5939                         }
5940                         break;
5941
5942                 case 'i':
5943                         arg_ignore_inhibitors = true;
5944                         break;
5945
5946                 case ARG_PLAIN:
5947                         arg_plain = true;
5948                         break;
5949
5950                 case ARG_STATE: {
5951                         const char *word, *state;
5952                         size_t size;
5953
5954                         FOREACH_WORD_SEPARATOR(word, size, optarg, ",", state) {
5955                                 char *s;
5956
5957                                 s = strndup(word, size);
5958                                 if (!s)
5959                                         return log_oom();
5960
5961                                 if (strv_consume(&arg_states, s) < 0)
5962                                         return log_oom();
5963                         }
5964                         break;
5965                 }
5966
5967                 case 'r':
5968                         if (geteuid() != 0) {
5969                                 log_error("--recursive requires root privileges.");
5970                                 return -EPERM;
5971                         }
5972
5973                         arg_recursive = true;
5974                         break;
5975
5976                 case ARG_PRESET_MODE:
5977
5978                         arg_preset_mode = unit_file_preset_mode_from_string(optarg);
5979                         if (arg_preset_mode < 0) {
5980                                 log_error("Failed to parse preset mode: %s.", optarg);
5981                                 return -EINVAL;
5982                         }
5983
5984                         break;
5985
5986                 case '?':
5987                         return -EINVAL;
5988
5989                 default:
5990                         assert_not_reached("Unhandled option");
5991                 }
5992
5993         if (arg_transport != BUS_TRANSPORT_LOCAL && arg_scope != UNIT_FILE_SYSTEM) {
5994                 log_error("Cannot access user instance remotely.");
5995                 return -EINVAL;
5996         }
5997
5998         return 1;
5999 }
6000
6001 static int halt_parse_argv(int argc, char *argv[]) {
6002
6003         enum {
6004                 ARG_HELP = 0x100,
6005                 ARG_HALT,
6006                 ARG_REBOOT,
6007                 ARG_NO_WALL
6008         };
6009
6010         static const struct option options[] = {
6011                 { "help",      no_argument,       NULL, ARG_HELP    },
6012                 { "halt",      no_argument,       NULL, ARG_HALT    },
6013                 { "poweroff",  no_argument,       NULL, 'p'         },
6014                 { "reboot",    no_argument,       NULL, ARG_REBOOT  },
6015                 { "force",     no_argument,       NULL, 'f'         },
6016                 { "wtmp-only", no_argument,       NULL, 'w'         },
6017                 { "no-wtmp",   no_argument,       NULL, 'd'         },
6018                 { "no-wall",   no_argument,       NULL, ARG_NO_WALL },
6019                 {}
6020         };
6021
6022         int c, r, runlevel;
6023
6024         assert(argc >= 0);
6025         assert(argv);
6026
6027         if (utmp_get_runlevel(&runlevel, NULL) >= 0)
6028                 if (runlevel == '0' || runlevel == '6')
6029                         arg_force = 2;
6030
6031         while ((c = getopt_long(argc, argv, "pfwdnih", options, NULL)) >= 0)
6032                 switch (c) {
6033
6034                 case ARG_HELP:
6035                         halt_help();
6036                         return 0;
6037
6038                 case ARG_HALT:
6039                         arg_action = ACTION_HALT;
6040                         break;
6041
6042                 case 'p':
6043                         if (arg_action != ACTION_REBOOT)
6044                                 arg_action = ACTION_POWEROFF;
6045                         break;
6046
6047                 case ARG_REBOOT:
6048                         arg_action = ACTION_REBOOT;
6049                         break;
6050
6051                 case 'f':
6052                         arg_force = 2;
6053                         break;
6054
6055                 case 'w':
6056                         arg_dry = true;
6057                         break;
6058
6059                 case 'd':
6060                         arg_no_wtmp = true;
6061                         break;
6062
6063                 case ARG_NO_WALL:
6064                         arg_no_wall = true;
6065                         break;
6066
6067                 case 'i':
6068                 case 'h':
6069                 case 'n':
6070                         /* Compatibility nops */
6071                         break;
6072
6073                 case '?':
6074                         return -EINVAL;
6075
6076                 default:
6077                         assert_not_reached("Unhandled option");
6078                 }
6079
6080         if (arg_action == ACTION_REBOOT && (argc == optind || argc == optind + 1)) {
6081                 r = update_reboot_param_file(argc == optind + 1 ? argv[optind] : NULL);
6082                 if (r < 0)
6083                         return r;
6084         } else if (optind < argc) {
6085                 log_error("Too many arguments.");
6086                 return -EINVAL;
6087         }
6088
6089         return 1;
6090 }
6091
6092 static int parse_time_spec(const char *t, usec_t *_u) {
6093         assert(t);
6094         assert(_u);
6095
6096         if (streq(t, "now"))
6097                 *_u = 0;
6098         else if (!strchr(t, ':')) {
6099                 uint64_t u;
6100
6101                 if (safe_atou64(t, &u) < 0)
6102                         return -EINVAL;
6103
6104                 *_u = now(CLOCK_REALTIME) + USEC_PER_MINUTE * u;
6105         } else {
6106                 char *e = NULL;
6107                 long hour, minute;
6108                 struct tm tm = {};
6109                 time_t s;
6110                 usec_t n;
6111
6112                 errno = 0;
6113                 hour = strtol(t, &e, 10);
6114                 if (errno > 0 || *e != ':' || hour < 0 || hour > 23)
6115                         return -EINVAL;
6116
6117                 minute = strtol(e+1, &e, 10);
6118                 if (errno > 0 || *e != 0 || minute < 0 || minute > 59)
6119                         return -EINVAL;
6120
6121                 n = now(CLOCK_REALTIME);
6122                 s = (time_t) (n / USEC_PER_SEC);
6123
6124                 assert_se(localtime_r(&s, &tm));
6125
6126                 tm.tm_hour = (int) hour;
6127                 tm.tm_min = (int) minute;
6128                 tm.tm_sec = 0;
6129
6130                 assert_se(s = mktime(&tm));
6131
6132                 *_u = (usec_t) s * USEC_PER_SEC;
6133
6134                 while (*_u <= n)
6135                         *_u += USEC_PER_DAY;
6136         }
6137
6138         return 0;
6139 }
6140
6141 static int shutdown_parse_argv(int argc, char *argv[]) {
6142
6143         enum {
6144                 ARG_HELP = 0x100,
6145                 ARG_NO_WALL
6146         };
6147
6148         static const struct option options[] = {
6149                 { "help",      no_argument,       NULL, ARG_HELP    },
6150                 { "halt",      no_argument,       NULL, 'H'         },
6151                 { "poweroff",  no_argument,       NULL, 'P'         },
6152                 { "reboot",    no_argument,       NULL, 'r'         },
6153                 { "kexec",     no_argument,       NULL, 'K'         }, /* not documented extension */
6154                 { "no-wall",   no_argument,       NULL, ARG_NO_WALL },
6155                 {}
6156         };
6157
6158         int c, r;
6159
6160         assert(argc >= 0);
6161         assert(argv);
6162
6163         while ((c = getopt_long(argc, argv, "HPrhkt:afFc", options, NULL)) >= 0)
6164                 switch (c) {
6165
6166                 case ARG_HELP:
6167                         shutdown_help();
6168                         return 0;
6169
6170                 case 'H':
6171                         arg_action = ACTION_HALT;
6172                         break;
6173
6174                 case 'P':
6175                         arg_action = ACTION_POWEROFF;
6176                         break;
6177
6178                 case 'r':
6179                         if (kexec_loaded())
6180                                 arg_action = ACTION_KEXEC;
6181                         else
6182                                 arg_action = ACTION_REBOOT;
6183                         break;
6184
6185                 case 'K':
6186                         arg_action = ACTION_KEXEC;
6187                         break;
6188
6189                 case 'h':
6190                         if (arg_action != ACTION_HALT)
6191                                 arg_action = ACTION_POWEROFF;
6192                         break;
6193
6194                 case 'k':
6195                         arg_dry = true;
6196                         break;
6197
6198                 case ARG_NO_WALL:
6199                         arg_no_wall = true;
6200                         break;
6201
6202                 case 't':
6203                 case 'a':
6204                         /* Compatibility nops */
6205                         break;
6206
6207                 case 'c':
6208                         arg_action = ACTION_CANCEL_SHUTDOWN;
6209                         break;
6210
6211                 case '?':
6212                         return -EINVAL;
6213
6214                 default:
6215                         assert_not_reached("Unhandled option");
6216                 }
6217
6218         if (argc > optind && arg_action != ACTION_CANCEL_SHUTDOWN) {
6219                 r = parse_time_spec(argv[optind], &arg_when);
6220                 if (r < 0) {
6221                         log_error("Failed to parse time specification: %s", argv[optind]);
6222                         return r;
6223                 }
6224         } else
6225                 arg_when = now(CLOCK_REALTIME) + USEC_PER_MINUTE;
6226
6227         if (argc > optind && arg_action == ACTION_CANCEL_SHUTDOWN)
6228                 /* No time argument for shutdown cancel */
6229                 arg_wall = argv + optind;
6230         else if (argc > optind + 1)
6231                 /* We skip the time argument */
6232                 arg_wall = argv + optind + 1;
6233
6234         optind = argc;
6235
6236         return 1;
6237 }
6238
6239 static int telinit_parse_argv(int argc, char *argv[]) {
6240
6241         enum {
6242                 ARG_HELP = 0x100,
6243                 ARG_NO_WALL
6244         };
6245
6246         static const struct option options[] = {
6247                 { "help",      no_argument,       NULL, ARG_HELP    },
6248                 { "no-wall",   no_argument,       NULL, ARG_NO_WALL },
6249                 {}
6250         };
6251
6252         static const struct {
6253                 char from;
6254                 enum action to;
6255         } table[] = {
6256                 { '0', ACTION_POWEROFF },
6257                 { '6', ACTION_REBOOT },
6258                 { '1', ACTION_RESCUE },
6259                 { '2', ACTION_RUNLEVEL2 },
6260                 { '3', ACTION_RUNLEVEL3 },
6261                 { '4', ACTION_RUNLEVEL4 },
6262                 { '5', ACTION_RUNLEVEL5 },
6263                 { 's', ACTION_RESCUE },
6264                 { 'S', ACTION_RESCUE },
6265                 { 'q', ACTION_RELOAD },
6266                 { 'Q', ACTION_RELOAD },
6267                 { 'u', ACTION_REEXEC },
6268                 { 'U', ACTION_REEXEC }
6269         };
6270
6271         unsigned i;
6272         int c;
6273
6274         assert(argc >= 0);
6275         assert(argv);
6276
6277         while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0)
6278                 switch (c) {
6279
6280                 case ARG_HELP:
6281                         telinit_help();
6282                         return 0;
6283
6284                 case ARG_NO_WALL:
6285                         arg_no_wall = true;
6286                         break;
6287
6288                 case '?':
6289                         return -EINVAL;
6290
6291                 default:
6292                         assert_not_reached("Unhandled option");
6293                 }
6294
6295         if (optind >= argc) {
6296                 log_error("%s: required argument missing.",
6297                           program_invocation_short_name);
6298                 return -EINVAL;
6299         }
6300
6301         if (optind + 1 < argc) {
6302                 log_error("Too many arguments.");
6303                 return -EINVAL;
6304         }
6305
6306         if (strlen(argv[optind]) != 1) {
6307                 log_error("Expected single character argument.");
6308                 return -EINVAL;
6309         }
6310
6311         for (i = 0; i < ELEMENTSOF(table); i++)
6312                 if (table[i].from == argv[optind][0])
6313                         break;
6314
6315         if (i >= ELEMENTSOF(table)) {
6316                 log_error("Unknown command '%s'.", argv[optind]);
6317                 return -EINVAL;
6318         }
6319
6320         arg_action = table[i].to;
6321
6322         optind ++;
6323
6324         return 1;
6325 }
6326
6327 static int runlevel_parse_argv(int argc, char *argv[]) {
6328
6329         enum {
6330                 ARG_HELP = 0x100,
6331         };
6332
6333         static const struct option options[] = {
6334                 { "help",      no_argument,       NULL, ARG_HELP    },
6335                 {}
6336         };
6337
6338         int c;
6339
6340         assert(argc >= 0);
6341         assert(argv);
6342
6343         while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0)
6344                 switch (c) {
6345
6346                 case ARG_HELP:
6347                         runlevel_help();
6348                         return 0;
6349
6350                 case '?':
6351                         return -EINVAL;
6352
6353                 default:
6354                         assert_not_reached("Unhandled option");
6355                 }
6356
6357         if (optind < argc) {
6358                 log_error("Too many arguments.");
6359                 return -EINVAL;
6360         }
6361
6362         return 1;
6363 }
6364
6365 static int parse_argv(int argc, char *argv[]) {
6366         assert(argc >= 0);
6367         assert(argv);
6368
6369         if (program_invocation_short_name) {
6370
6371                 if (strstr(program_invocation_short_name, "halt")) {
6372                         arg_action = ACTION_HALT;
6373                         return halt_parse_argv(argc, argv);
6374                 } else if (strstr(program_invocation_short_name, "poweroff")) {
6375                         arg_action = ACTION_POWEROFF;
6376                         return halt_parse_argv(argc, argv);
6377                 } else if (strstr(program_invocation_short_name, "reboot")) {
6378                         if (kexec_loaded())
6379                                 arg_action = ACTION_KEXEC;
6380                         else
6381                                 arg_action = ACTION_REBOOT;
6382                         return halt_parse_argv(argc, argv);
6383                 } else if (strstr(program_invocation_short_name, "shutdown")) {
6384                         arg_action = ACTION_POWEROFF;
6385                         return shutdown_parse_argv(argc, argv);
6386                 } else if (strstr(program_invocation_short_name, "init")) {
6387
6388                         if (sd_booted() > 0) {
6389                                 arg_action = _ACTION_INVALID;
6390                                 return telinit_parse_argv(argc, argv);
6391                         } else {
6392                                 /* Hmm, so some other init system is
6393                                  * running, we need to forward this
6394                                  * request to it. For now we simply
6395                                  * guess that it is Upstart. */
6396
6397                                 execv(TELINIT, argv);
6398
6399                                 log_error("Couldn't find an alternative telinit implementation to spawn.");
6400                                 return -EIO;
6401                         }
6402
6403                 } else if (strstr(program_invocation_short_name, "runlevel")) {
6404                         arg_action = ACTION_RUNLEVEL;
6405                         return runlevel_parse_argv(argc, argv);
6406                 }
6407         }
6408
6409         arg_action = ACTION_SYSTEMCTL;
6410         return systemctl_parse_argv(argc, argv);
6411 }
6412
6413 _pure_ static int action_to_runlevel(void) {
6414
6415         static const char table[_ACTION_MAX] = {
6416                 [ACTION_HALT] =      '0',
6417                 [ACTION_POWEROFF] =  '0',
6418                 [ACTION_REBOOT] =    '6',
6419                 [ACTION_RUNLEVEL2] = '2',
6420                 [ACTION_RUNLEVEL3] = '3',
6421                 [ACTION_RUNLEVEL4] = '4',
6422                 [ACTION_RUNLEVEL5] = '5',
6423                 [ACTION_RESCUE] =    '1'
6424         };
6425
6426         assert(arg_action < _ACTION_MAX);
6427
6428         return table[arg_action];
6429 }
6430
6431 static int talk_initctl(void) {
6432
6433         struct init_request request = {
6434                 .magic = INIT_MAGIC,
6435                 .sleeptime  = 0,
6436                 .cmd = INIT_CMD_RUNLVL
6437         };
6438
6439         _cleanup_close_ int fd = -1;
6440         char rl;
6441         int r;
6442
6443         rl = action_to_runlevel();
6444         if (!rl)
6445                 return 0;
6446
6447         request.runlevel = rl;
6448
6449         fd = open(INIT_FIFO, O_WRONLY|O_NDELAY|O_CLOEXEC|O_NOCTTY);
6450         if (fd < 0) {
6451                 if (errno == ENOENT)
6452                         return 0;
6453
6454                 log_error("Failed to open "INIT_FIFO": %m");
6455                 return -errno;
6456         }
6457
6458         errno = 0;
6459         r = loop_write(fd, &request, sizeof(request), false) != sizeof(request);
6460         if (r) {
6461                 log_error("Failed to write to "INIT_FIFO": %m");
6462                 return errno > 0 ? -errno : -EIO;
6463         }
6464
6465         return 1;
6466 }
6467
6468 static int systemctl_main(sd_bus *bus, int argc, char *argv[], int bus_error) {
6469
6470         static const struct {
6471                 const char* verb;
6472                 const enum {
6473                         MORE,
6474                         LESS,
6475                         EQUAL
6476                 } argc_cmp;
6477                 const int argc;
6478                 int (* const dispatch)(sd_bus *bus, char **args);
6479                 const enum {
6480                         NOBUS = 1,
6481                         FORCE,
6482                 } bus;
6483         } verbs[] = {
6484                 { "list-units",            MORE,  0, list_units        },
6485                 { "list-unit-files",       MORE,  1, list_unit_files,  NOBUS },
6486                 { "list-sockets",          MORE,  1, list_sockets      },
6487                 { "list-timers",           MORE,  1, list_timers       },
6488                 { "list-jobs",             MORE,  1, list_jobs         },
6489                 { "list-machines",         MORE,  1, list_machines     },
6490                 { "clear-jobs",            EQUAL, 1, daemon_reload     },
6491                 { "cancel",                MORE,  2, cancel_job        },
6492                 { "start",                 MORE,  2, start_unit        },
6493                 { "stop",                  MORE,  2, start_unit        },
6494                 { "condstop",              MORE,  2, start_unit        }, /* For compatibility with ALTLinux */
6495                 { "reload",                MORE,  2, start_unit        },
6496                 { "restart",               MORE,  2, start_unit        },
6497                 { "try-restart",           MORE,  2, start_unit        },
6498                 { "reload-or-restart",     MORE,  2, start_unit        },
6499                 { "reload-or-try-restart", MORE,  2, start_unit        },
6500                 { "force-reload",          MORE,  2, start_unit        }, /* For compatibility with SysV */
6501                 { "condreload",            MORE,  2, start_unit        }, /* For compatibility with ALTLinux */
6502                 { "condrestart",           MORE,  2, start_unit        }, /* For compatibility with RH */
6503                 { "isolate",               EQUAL, 2, start_unit        },
6504                 { "kill",                  MORE,  2, kill_unit         },
6505                 { "is-active",             MORE,  2, check_unit_active },
6506                 { "check",                 MORE,  2, check_unit_active },
6507                 { "is-failed",             MORE,  2, check_unit_failed },
6508                 { "show",                  MORE,  1, show              },
6509                 { "cat",                   MORE,  2, cat               },
6510                 { "status",                MORE,  1, show              },
6511                 { "help",                  MORE,  2, show              },
6512                 { "snapshot",              LESS,  2, snapshot          },
6513                 { "delete",                MORE,  2, delete_snapshot   },
6514                 { "daemon-reload",         EQUAL, 1, daemon_reload     },
6515                 { "daemon-reexec",         EQUAL, 1, daemon_reload     },
6516                 { "show-environment",      EQUAL, 1, show_environment  },
6517                 { "set-environment",       MORE,  2, set_environment   },
6518                 { "unset-environment",     MORE,  2, set_environment   },
6519                 { "import-environment",    MORE,  1, import_environment},
6520                 { "halt",                  EQUAL, 1, start_special,    FORCE },
6521                 { "poweroff",              EQUAL, 1, start_special,    FORCE },
6522                 { "reboot",                EQUAL, 1, start_special,    FORCE },
6523                 { "kexec",                 EQUAL, 1, start_special     },
6524                 { "suspend",               EQUAL, 1, start_special     },
6525                 { "hibernate",             EQUAL, 1, start_special     },
6526                 { "hybrid-sleep",          EQUAL, 1, start_special     },
6527                 { "default",               EQUAL, 1, start_special     },
6528                 { "rescue",                EQUAL, 1, start_special     },
6529                 { "emergency",             EQUAL, 1, start_special     },
6530                 { "exit",                  EQUAL, 1, start_special     },
6531                 { "reset-failed",          MORE,  1, reset_failed      },
6532                 { "enable",                MORE,  2, enable_unit,      NOBUS },
6533                 { "disable",               MORE,  2, enable_unit,      NOBUS },
6534                 { "is-enabled",            MORE,  2, unit_is_enabled,  NOBUS },
6535                 { "reenable",              MORE,  2, enable_unit,      NOBUS },
6536                 { "preset",                MORE,  2, enable_unit,      NOBUS },
6537                 { "preset-all",            EQUAL, 1, preset_all,       NOBUS },
6538                 { "mask",                  MORE,  2, enable_unit,      NOBUS },
6539                 { "unmask",                MORE,  2, enable_unit,      NOBUS },
6540                 { "link",                  MORE,  2, enable_unit,      NOBUS },
6541                 { "switch-root",           MORE,  2, switch_root       },
6542                 { "list-dependencies",     LESS,  2, list_dependencies },
6543                 { "set-default",           EQUAL, 2, set_default,      NOBUS },
6544                 { "get-default",           EQUAL, 1, get_default,      NOBUS },
6545                 { "set-property",          MORE,  3, set_property      },
6546                 { "is-system-running",     EQUAL, 1, is_system_running },
6547                 {}
6548         }, *verb = verbs;
6549
6550         int left;
6551
6552         assert(argc >= 0);
6553         assert(argv);
6554
6555         left = argc - optind;
6556
6557         /* Special rule: no arguments (left == 0) means "list-units" */
6558         if (left > 0) {
6559                 if (streq(argv[optind], "help") && !argv[optind+1]) {
6560                         log_error("This command expects one or more "
6561                                   "unit names. Did you mean --help?");
6562                         return -EINVAL;
6563                 }
6564
6565                 for (; verb->verb; verb++)
6566                         if (streq(argv[optind], verb->verb))
6567                                 goto found;
6568
6569                 log_error("Unknown operation '%s'.", argv[optind]);
6570                 return -EINVAL;
6571         }
6572 found:
6573
6574         switch (verb->argc_cmp) {
6575
6576         case EQUAL:
6577                 if (left != verb->argc) {
6578                         log_error("Invalid number of arguments.");
6579                         return -EINVAL;
6580                 }
6581
6582                 break;
6583
6584         case MORE:
6585                 if (left < verb->argc) {
6586                         log_error("Too few arguments.");
6587                         return -EINVAL;
6588                 }
6589
6590                 break;
6591
6592         case LESS:
6593                 if (left > verb->argc) {
6594                         log_error("Too many arguments.");
6595                         return -EINVAL;
6596                 }
6597
6598                 break;
6599
6600         default:
6601                 assert_not_reached("Unknown comparison operator.");
6602         }
6603
6604         /* Require a bus connection for all operations but
6605          * enable/disable */
6606         if (verb->bus == NOBUS) {
6607                 if (!bus && !avoid_bus()) {
6608                         log_error("Failed to get D-Bus connection: %s", strerror(-bus_error));
6609                         return -EIO;
6610                 }
6611
6612         } else {
6613                 if (running_in_chroot() > 0) {
6614                         log_info("Running in chroot, ignoring request.");
6615                         return 0;
6616                 }
6617
6618                 if ((verb->bus != FORCE || arg_force <= 0) && !bus) {
6619                         log_error("Failed to get D-Bus connection: %s", strerror(-bus_error));
6620                         return -EIO;
6621                 }
6622         }
6623
6624         return verb->dispatch(bus, argv + optind);
6625 }
6626
6627 static int send_shutdownd(usec_t t, char mode, bool dry_run, bool warn, const char *message) {
6628
6629         struct sd_shutdown_command c = {
6630                 .usec = t,
6631                 .mode = mode,
6632                 .dry_run = dry_run,
6633                 .warn_wall = warn,
6634         };
6635
6636         union sockaddr_union sockaddr = {
6637                 .un.sun_family = AF_UNIX,
6638                 .un.sun_path = "/run/systemd/shutdownd",
6639         };
6640
6641         struct iovec iovec[2] = {{
6642                  .iov_base = (char*) &c,
6643                  .iov_len = offsetof(struct sd_shutdown_command, wall_message),
6644         }};
6645
6646         struct msghdr msghdr = {
6647                 .msg_name = &sockaddr,
6648                 .msg_namelen = offsetof(struct sockaddr_un, sun_path)
6649                                + strlen("/run/systemd/shutdownd"),
6650                 .msg_iov = iovec,
6651                 .msg_iovlen = 1,
6652         };
6653
6654         _cleanup_close_ int fd;
6655
6656         fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0);
6657         if (fd < 0)
6658                 return -errno;
6659
6660         if (!isempty(message)) {
6661                 iovec[1].iov_base = (char*) message;
6662                 iovec[1].iov_len = strlen(message);
6663                 msghdr.msg_iovlen++;
6664         }
6665
6666         if (sendmsg(fd, &msghdr, MSG_NOSIGNAL) < 0)
6667                 return -errno;
6668
6669         return 0;
6670 }
6671
6672 static int reload_with_fallback(sd_bus *bus) {
6673
6674         if (bus) {
6675                 /* First, try systemd via D-Bus. */
6676                 if (daemon_reload(bus, NULL) >= 0)
6677                         return 0;
6678         }
6679
6680         /* Nothing else worked, so let's try signals */
6681         assert(arg_action == ACTION_RELOAD || arg_action == ACTION_REEXEC);
6682
6683         if (kill(1, arg_action == ACTION_RELOAD ? SIGHUP : SIGTERM) < 0) {
6684                 log_error("kill() failed: %m");
6685                 return -errno;
6686         }
6687
6688         return 0;
6689 }
6690
6691 static int start_with_fallback(sd_bus *bus) {
6692
6693         if (bus) {
6694                 /* First, try systemd via D-Bus. */
6695                 if (start_unit(bus, NULL) >= 0)
6696                         goto done;
6697         }
6698
6699         /* Nothing else worked, so let's try
6700          * /dev/initctl */
6701         if (talk_initctl() > 0)
6702                 goto done;
6703
6704         log_error("Failed to talk to init daemon.");
6705         return -EIO;
6706
6707 done:
6708         warn_wall(arg_action);
6709         return 0;
6710 }
6711
6712 static int halt_now(enum action a) {
6713
6714 /* Make sure C-A-D is handled by the kernel from this
6715          * point on... */
6716         reboot(RB_ENABLE_CAD);
6717
6718         switch (a) {
6719
6720         case ACTION_HALT:
6721                 log_info("Halting.");
6722                 reboot(RB_HALT_SYSTEM);
6723                 return -errno;
6724
6725         case ACTION_POWEROFF:
6726                 log_info("Powering off.");
6727                 reboot(RB_POWER_OFF);
6728                 return -errno;
6729
6730         case ACTION_REBOOT: {
6731                 _cleanup_free_ char *param = NULL;
6732
6733                 if (read_one_line_file(REBOOT_PARAM_FILE, &param) >= 0) {
6734                         log_info("Rebooting with argument '%s'.", param);
6735                         syscall(SYS_reboot, LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2,
6736                                 LINUX_REBOOT_CMD_RESTART2, param);
6737                 }
6738
6739                 log_info("Rebooting.");
6740                 reboot(RB_AUTOBOOT);
6741                 return -errno;
6742         }
6743
6744         default:
6745                 assert_not_reached("Unknown action.");
6746         }
6747 }
6748
6749 static int halt_main(sd_bus *bus) {
6750         int r;
6751
6752         r = check_inhibitors(bus, arg_action);
6753         if (r < 0)
6754                 return r;
6755
6756         if (geteuid() != 0) {
6757                 /* Try logind if we are a normal user and no special
6758                  * mode applies. Maybe PolicyKit allows us to shutdown
6759                  * the machine. */
6760
6761                 if (arg_when <= 0 &&
6762                     !arg_dry &&
6763                     arg_force <= 0 &&
6764                     (arg_action == ACTION_POWEROFF ||
6765                      arg_action == ACTION_REBOOT)) {
6766                         r = reboot_with_logind(bus, arg_action);
6767                         if (r >= 0)
6768                                 return r;
6769                 }
6770
6771                 log_error("Must be root.");
6772                 return -EPERM;
6773         }
6774
6775         if (arg_when > 0) {
6776                 _cleanup_free_ char *m;
6777
6778                 m = strv_join(arg_wall, " ");
6779                 if (!m)
6780                         return log_oom();
6781
6782                 r = send_shutdownd(arg_when,
6783                                    arg_action == ACTION_HALT     ? 'H' :
6784                                    arg_action == ACTION_POWEROFF ? 'P' :
6785                                    arg_action == ACTION_KEXEC    ? 'K' :
6786                                                                    'r',
6787                                    arg_dry,
6788                                    !arg_no_wall,
6789                                    m);
6790
6791                 if (r < 0)
6792                         log_warning("Failed to talk to shutdownd, proceeding with immediate shutdown: %s", strerror(-r));
6793                 else {
6794                         char date[FORMAT_TIMESTAMP_MAX];
6795
6796                         log_info("Shutdown scheduled for %s, use 'shutdown -c' to cancel.",
6797                                  format_timestamp(date, sizeof(date), arg_when));
6798                         return 0;
6799                 }
6800         }
6801
6802         if (!arg_dry && !arg_force)
6803                 return start_with_fallback(bus);
6804
6805         if (!arg_no_wtmp) {
6806                 if (sd_booted() > 0)
6807                         log_debug("Not writing utmp record, assuming that systemd-update-utmp is used.");
6808                 else {
6809                         r = utmp_put_shutdown();
6810                         if (r < 0)
6811                                 log_warning("Failed to write utmp record: %s", strerror(-r));
6812                 }
6813         }
6814
6815         if (arg_dry)
6816                 return 0;
6817
6818         r = halt_now(arg_action);
6819         log_error("Failed to reboot: %s", strerror(-r));
6820
6821         return r;
6822 }
6823
6824 static int runlevel_main(void) {
6825         int r, runlevel, previous;
6826
6827         r = utmp_get_runlevel(&runlevel, &previous);
6828         if (r < 0) {
6829                 puts("unknown");
6830                 return r;
6831         }
6832
6833         printf("%c %c\n",
6834                previous <= 0 ? 'N' : previous,
6835                runlevel <= 0 ? 'N' : runlevel);
6836
6837         return 0;
6838 }
6839
6840 int main(int argc, char*argv[]) {
6841         _cleanup_bus_close_unref_ sd_bus *bus = NULL;
6842         int r;
6843
6844         setlocale(LC_ALL, "");
6845         log_parse_environment();
6846         log_open();
6847
6848         /* Explicitly not on_tty() to avoid setting cached value.
6849          * This becomes relevant for piping output which might be
6850          * ellipsized. */
6851         original_stdout_is_tty = isatty(STDOUT_FILENO);
6852
6853         r = parse_argv(argc, argv);
6854         if (r <= 0)
6855                 goto finish;
6856
6857         /* /sbin/runlevel doesn't need to communicate via D-Bus, so
6858          * let's shortcut this */
6859         if (arg_action == ACTION_RUNLEVEL) {
6860                 r = runlevel_main();
6861                 goto finish;
6862         }
6863
6864         if (running_in_chroot() > 0 && arg_action != ACTION_SYSTEMCTL) {
6865                 log_info("Running in chroot, ignoring request.");
6866                 r = 0;
6867                 goto finish;
6868         }
6869
6870         if (!avoid_bus())
6871                 r = bus_open_transport_systemd(arg_transport, arg_host, arg_scope != UNIT_FILE_SYSTEM, &bus);
6872
6873         /* systemctl_main() will print an error message for the bus
6874          * connection, but only if it needs to */
6875
6876         switch (arg_action) {
6877
6878         case ACTION_SYSTEMCTL:
6879                 r = systemctl_main(bus, argc, argv, r);
6880                 break;
6881
6882         case ACTION_HALT:
6883         case ACTION_POWEROFF:
6884         case ACTION_REBOOT:
6885         case ACTION_KEXEC:
6886                 r = halt_main(bus);
6887                 break;
6888
6889         case ACTION_RUNLEVEL2:
6890         case ACTION_RUNLEVEL3:
6891         case ACTION_RUNLEVEL4:
6892         case ACTION_RUNLEVEL5:
6893         case ACTION_RESCUE:
6894         case ACTION_EMERGENCY:
6895         case ACTION_DEFAULT:
6896                 r = start_with_fallback(bus);
6897                 break;
6898
6899         case ACTION_RELOAD:
6900         case ACTION_REEXEC:
6901                 r = reload_with_fallback(bus);
6902                 break;
6903
6904         case ACTION_CANCEL_SHUTDOWN: {
6905                 _cleanup_free_ char *m = NULL;
6906
6907                 if (arg_wall) {
6908                         m = strv_join(arg_wall, " ");
6909                         if (!m) {
6910                                 r = log_oom();
6911                                 goto finish;
6912                         }
6913                 }
6914
6915                 r = send_shutdownd(arg_when, SD_SHUTDOWN_NONE, false, !arg_no_wall, m);
6916                 if (r < 0)
6917                         log_warning("Failed to talk to shutdownd, shutdown hasn't been cancelled: %s", strerror(-r));
6918                 break;
6919         }
6920
6921         case ACTION_RUNLEVEL:
6922         case _ACTION_INVALID:
6923         default:
6924                 assert_not_reached("Unknown action");
6925         }
6926
6927 finish:
6928         pager_close();
6929         ask_password_agent_close();
6930         polkit_agent_close();
6931
6932         strv_free(arg_types);
6933         strv_free(arg_states);
6934         strv_free(arg_properties);
6935
6936         return r < 0 ? EXIT_FAILURE : r;
6937 }