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, 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_func, string_compare_func);
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                         log_error("Job for %s failed. See 'systemctl status %s' and 'journalctl -xn' for details.", strna(d->name), strna(d->name));
2356         }
2357
2358         if (streq(d->result, "timeout"))
2359                 r = -ETIME;
2360         else if (streq(d->result, "canceled"))
2361                 r = -ECANCELED;
2362         else if (streq(d->result, "dependency"))
2363                 r = -EIO;
2364         else if (!streq(d->result, "done") && !streq(d->result, "skipped"))
2365                 r = -EIO;
2366
2367         return r;
2368 }
2369
2370 static int wait_for_jobs(sd_bus *bus, Set *s) {
2371         _cleanup_bus_slot_unref_ sd_bus_slot *slot = NULL;
2372         WaitData d = { .set = s };
2373         int r = 0, q;
2374
2375         assert(bus);
2376         assert(s);
2377
2378         q = sd_bus_add_filter(bus, &slot, wait_filter, &d);
2379         if (q < 0)
2380                 return log_oom();
2381
2382         while (!set_isempty(s)) {
2383                 q = bus_process_wait(bus);
2384                 if (q < 0) {
2385                         log_error("Failed to wait for response: %s", strerror(-r));
2386                         return q;
2387                 }
2388
2389                 if (d.result) {
2390                         q = check_wait_response(&d);
2391                         /* Return the first error as it is most likely to be
2392                          * meaningful. */
2393                         if (q < 0 && r == 0)
2394                                 r = q;
2395                         log_debug("Got result %s/%s for job %s",
2396                                   strna(d.result), strerror(-q), strna(d.name));
2397                 }
2398
2399                 free(d.name);
2400                 d.name = NULL;
2401
2402                 free(d.result);
2403                 d.result = NULL;
2404         }
2405
2406         return r;
2407 }
2408
2409 static int check_one_unit(sd_bus *bus, const char *name, const char *good_states, bool quiet) {
2410         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2411         _cleanup_free_ char *n = NULL, *state = NULL;
2412         const char *path;
2413         int r;
2414
2415         assert(name);
2416
2417         n = unit_name_mangle(name, MANGLE_NOGLOB);
2418         if (!n)
2419                 return log_oom();
2420
2421         /* We don't use unit_dbus_path_from_name() directly since we
2422          * don't want to load the unit if it isn't loaded. */
2423
2424         r = sd_bus_call_method(
2425                         bus,
2426                         "org.freedesktop.systemd1",
2427                         "/org/freedesktop/systemd1",
2428                         "org.freedesktop.systemd1.Manager",
2429                         "GetUnit",
2430                         NULL,
2431                         &reply,
2432                         "s", n);
2433         if (r < 0) {
2434                 if (!quiet)
2435                         puts("unknown");
2436                 return 0;
2437         }
2438
2439         r = sd_bus_message_read(reply, "o", &path);
2440         if (r < 0)
2441                 return bus_log_parse_error(r);
2442
2443         r = sd_bus_get_property_string(
2444                         bus,
2445                         "org.freedesktop.systemd1",
2446                         path,
2447                         "org.freedesktop.systemd1.Unit",
2448                         "ActiveState",
2449                         NULL,
2450                         &state);
2451         if (r < 0) {
2452                 if (!quiet)
2453                         puts("unknown");
2454                 return 0;
2455         }
2456
2457         if (!quiet)
2458                 puts(state);
2459
2460         return nulstr_contains(good_states, state);
2461 }
2462
2463 static int check_triggering_units(
2464                 sd_bus *bus,
2465                 const char *name) {
2466
2467         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2468         _cleanup_free_ char *path = NULL, *n = NULL, *state = NULL;
2469         _cleanup_strv_free_ char **triggered_by = NULL;
2470         bool print_warning_label = true;
2471         char **i;
2472         int r;
2473
2474         n = unit_name_mangle(name, MANGLE_NOGLOB);
2475         if (!n)
2476                 return log_oom();
2477
2478         path = unit_dbus_path_from_name(n);
2479         if (!path)
2480                 return log_oom();
2481
2482         r = sd_bus_get_property_string(
2483                         bus,
2484                         "org.freedesktop.systemd1",
2485                         path,
2486                         "org.freedesktop.systemd1.Unit",
2487                         "LoadState",
2488                         &error,
2489                         &state);
2490         if (r < 0) {
2491                 log_error("Failed to get load state of %s: %s", n, bus_error_message(&error, r));
2492                 return r;
2493         }
2494
2495         if (streq(state, "masked"))
2496                 return 0;
2497
2498         r = sd_bus_get_property_strv(
2499                         bus,
2500                         "org.freedesktop.systemd1",
2501                         path,
2502                         "org.freedesktop.systemd1.Unit",
2503                         "TriggeredBy",
2504                         &error,
2505                         &triggered_by);
2506         if (r < 0) {
2507                 log_error("Failed to get triggered by array of %s: %s", n, bus_error_message(&error, r));
2508                 return r;
2509         }
2510
2511         STRV_FOREACH(i, triggered_by) {
2512                 r = check_one_unit(bus, *i, "active\0reloading\0", true);
2513                 if (r < 0) {
2514                         log_error("Failed to check unit: %s", strerror(-r));
2515                         return r;
2516                 }
2517
2518                 if (r == 0)
2519                         continue;
2520
2521                 if (print_warning_label) {
2522                         log_warning("Warning: Stopping %s, but it can still be activated by:", n);
2523                         print_warning_label = false;
2524                 }
2525
2526                 log_warning("  %s", *i);
2527         }
2528
2529         return 0;
2530 }
2531
2532 static const char *verb_to_method(const char *verb) {
2533        uint i;
2534
2535        for (i = 0; i < ELEMENTSOF(unit_actions); i++)
2536                 if (streq_ptr(unit_actions[i].verb, verb))
2537                         return unit_actions[i].method;
2538
2539        return "StartUnit";
2540 }
2541
2542 static const char *method_to_verb(const char *method) {
2543        uint i;
2544
2545        for (i = 0; i < ELEMENTSOF(unit_actions); i++)
2546                 if (streq_ptr(unit_actions[i].method, method))
2547                         return unit_actions[i].verb;
2548
2549        return "n/a";
2550 }
2551
2552 static int start_unit_one(
2553                 sd_bus *bus,
2554                 const char *method,
2555                 const char *name,
2556                 const char *mode,
2557                 sd_bus_error *error,
2558                 Set *s) {
2559
2560         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2561         const char *path;
2562         int r;
2563
2564         assert(method);
2565         assert(name);
2566         assert(mode);
2567         assert(error);
2568
2569         log_debug("Calling manager for %s on %s, %s", method, name, mode);
2570         r = sd_bus_call_method(
2571                         bus,
2572                         "org.freedesktop.systemd1",
2573                         "/org/freedesktop/systemd1",
2574                         "org.freedesktop.systemd1.Manager",
2575                         method,
2576                         error,
2577                         &reply,
2578                         "ss", name, mode);
2579         if (r < 0) {
2580                 const char *verb;
2581
2582                 if (r == -ENOENT && arg_action != ACTION_SYSTEMCTL)
2583                         /* There's always a fallback possible for
2584                          * legacy actions. */
2585                         return -EADDRNOTAVAIL;
2586
2587                 verb = method_to_verb(method);
2588
2589                 log_error("Failed to %s %s: %s", verb, name, bus_error_message(error, r));
2590                 return r;
2591         }
2592
2593         r = sd_bus_message_read(reply, "o", &path);
2594         if (r < 0)
2595                 return bus_log_parse_error(r);
2596
2597         if (need_daemon_reload(bus, name) > 0)
2598                 log_warning("Warning: Unit file of %s changed on disk, 'systemctl%s daemon-reload' recommended.",
2599                             name, arg_scope == UNIT_FILE_SYSTEM ? "" : " --user");
2600
2601         if (s) {
2602                 char *p;
2603
2604                 p = strdup(path);
2605                 if (!p)
2606                         return log_oom();
2607
2608                 log_debug("Adding %s to the set", p);
2609                 r = set_consume(s, p);
2610                 if (r < 0)
2611                         return log_oom();
2612         }
2613
2614         return 0;
2615 }
2616
2617 static int expand_names(sd_bus *bus, char **names, const char* suffix, char ***ret) {
2618
2619         _cleanup_strv_free_ char **mangled = NULL, **globs = NULL;
2620         char **name;
2621         int r = 0, i;
2622
2623         STRV_FOREACH(name, names) {
2624                 char *t;
2625
2626                 if (suffix)
2627                         t = unit_name_mangle_with_suffix(*name, MANGLE_GLOB, suffix);
2628                 else
2629                         t = unit_name_mangle(*name, MANGLE_GLOB);
2630                 if (!t)
2631                         return log_oom();
2632
2633                 if (string_is_glob(t))
2634                         r = strv_consume(&globs, t);
2635                 else
2636                         r = strv_consume(&mangled, t);
2637                 if (r < 0)
2638                         return log_oom();
2639         }
2640
2641         /* Query the manager only if any of the names are a glob, since
2642          * this is fairly expensive */
2643         if (!strv_isempty(globs)) {
2644                 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2645                 _cleanup_free_ UnitInfo *unit_infos = NULL;
2646
2647                 r = get_unit_list(bus, NULL, globs, &unit_infos, 0, &reply);
2648                 if (r < 0)
2649                         return r;
2650
2651                 for (i = 0; i < r; i++)
2652                         if (strv_extend(&mangled, unit_infos[i].id) < 0)
2653                                 return log_oom();
2654         }
2655
2656         *ret = mangled;
2657         mangled = NULL; /* do not free */
2658
2659         return 0;
2660 }
2661
2662 static const struct {
2663         const char *target;
2664         const char *verb;
2665         const char *mode;
2666 } action_table[_ACTION_MAX] = {
2667         [ACTION_HALT]         = { SPECIAL_HALT_TARGET,         "halt",         "replace-irreversibly" },
2668         [ACTION_POWEROFF]     = { SPECIAL_POWEROFF_TARGET,     "poweroff",     "replace-irreversibly" },
2669         [ACTION_REBOOT]       = { SPECIAL_REBOOT_TARGET,       "reboot",       "replace-irreversibly" },
2670         [ACTION_KEXEC]        = { SPECIAL_KEXEC_TARGET,        "kexec",        "replace-irreversibly" },
2671         [ACTION_RUNLEVEL2]    = { SPECIAL_RUNLEVEL2_TARGET,    NULL,           "isolate" },
2672         [ACTION_RUNLEVEL3]    = { SPECIAL_RUNLEVEL3_TARGET,    NULL,           "isolate" },
2673         [ACTION_RUNLEVEL4]    = { SPECIAL_RUNLEVEL4_TARGET,    NULL,           "isolate" },
2674         [ACTION_RUNLEVEL5]    = { SPECIAL_RUNLEVEL5_TARGET,    NULL,           "isolate" },
2675         [ACTION_RESCUE]       = { SPECIAL_RESCUE_TARGET,       "rescue",       "isolate" },
2676         [ACTION_EMERGENCY]    = { SPECIAL_EMERGENCY_TARGET,    "emergency",    "isolate" },
2677         [ACTION_DEFAULT]      = { SPECIAL_DEFAULT_TARGET,      "default",      "isolate" },
2678         [ACTION_EXIT]         = { SPECIAL_EXIT_TARGET,         "exit",         "replace-irreversibly" },
2679         [ACTION_SUSPEND]      = { SPECIAL_SUSPEND_TARGET,      "suspend",      "replace-irreversibly" },
2680         [ACTION_HIBERNATE]    = { SPECIAL_HIBERNATE_TARGET,    "hibernate",    "replace-irreversibly" },
2681         [ACTION_HYBRID_SLEEP] = { SPECIAL_HYBRID_SLEEP_TARGET, "hybrid-sleep", "replace-irreversibly" },
2682 };
2683
2684 static enum action verb_to_action(const char *verb) {
2685         enum action i;
2686
2687         for (i = _ACTION_INVALID; i < _ACTION_MAX; i++)
2688                 if (streq_ptr(action_table[i].verb, verb))
2689                         return i;
2690
2691         return _ACTION_INVALID;
2692 }
2693
2694 static int start_unit(sd_bus *bus, char **args) {
2695         _cleanup_set_free_free_ Set *s = NULL;
2696         _cleanup_strv_free_ char **names = NULL;
2697         const char *method, *mode, *one_name;
2698         char **name;
2699         int r = 0;
2700
2701         assert(bus);
2702
2703         ask_password_agent_open_if_enabled();
2704
2705         if (arg_action == ACTION_SYSTEMCTL) {
2706                 enum action action;
2707                 method = verb_to_method(args[0]);
2708                 action = verb_to_action(args[0]);
2709
2710                 mode = streq(args[0], "isolate") ? "isolate" :
2711                        action_table[action].mode ?: arg_job_mode;
2712
2713                 one_name = action_table[action].target;
2714         } else {
2715                 assert(arg_action < ELEMENTSOF(action_table));
2716                 assert(action_table[arg_action].target);
2717
2718                 method = "StartUnit";
2719
2720                 mode = action_table[arg_action].mode;
2721                 one_name = action_table[arg_action].target;
2722         }
2723
2724         if (one_name)
2725                 names = strv_new(one_name, NULL);
2726         else {
2727                 r = expand_names(bus, args + 1, NULL, &names);
2728                 if (r < 0)
2729                         log_error("Failed to expand names: %s", strerror(-r));
2730         }
2731
2732         if (!arg_no_block) {
2733                 r = enable_wait_for_jobs(bus);
2734                 if (r < 0) {
2735                         log_error("Could not watch jobs: %s", strerror(-r));
2736                         return r;
2737                 }
2738
2739                 s = set_new(string_hash_func, string_compare_func);
2740                 if (!s)
2741                         return log_oom();
2742         }
2743
2744         STRV_FOREACH(name, names) {
2745                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2746                 int q;
2747
2748                 q = start_unit_one(bus, method, *name, mode, &error, s);
2749                 if (r >= 0 && q < 0)
2750                         r = translate_bus_error_to_exit_status(q, &error);
2751         }
2752
2753         if (!arg_no_block) {
2754                 int q;
2755
2756                 q = wait_for_jobs(bus, s);
2757                 if (q < 0)
2758                         return q;
2759
2760                 /* When stopping units, warn if they can still be triggered by
2761                  * another active unit (socket, path, timer) */
2762                 if (!arg_quiet && streq(method, "StopUnit"))
2763                         STRV_FOREACH(name, names)
2764                                 check_triggering_units(bus, *name);
2765         }
2766
2767         return r;
2768 }
2769
2770 /* Ask systemd-logind, which might grant access to unprivileged users
2771  * through PolicyKit */
2772 static int reboot_with_logind(sd_bus *bus, enum action a) {
2773 #ifdef HAVE_LOGIND
2774         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2775         const char *method;
2776         int r;
2777
2778         if (!bus)
2779                 return -EIO;
2780
2781         polkit_agent_open_if_enabled();
2782
2783         switch (a) {
2784
2785         case ACTION_REBOOT:
2786                 method = "Reboot";
2787                 break;
2788
2789         case ACTION_POWEROFF:
2790                 method = "PowerOff";
2791                 break;
2792
2793         case ACTION_SUSPEND:
2794                 method = "Suspend";
2795                 break;
2796
2797         case ACTION_HIBERNATE:
2798                 method = "Hibernate";
2799                 break;
2800
2801         case ACTION_HYBRID_SLEEP:
2802                 method = "HybridSleep";
2803                 break;
2804
2805         default:
2806                 return -EINVAL;
2807         }
2808
2809         r = sd_bus_call_method(
2810                         bus,
2811                         "org.freedesktop.login1",
2812                         "/org/freedesktop/login1",
2813                         "org.freedesktop.login1.Manager",
2814                         method,
2815                         &error,
2816                         NULL,
2817                         "b", true);
2818         if (r < 0)
2819                 log_error("Failed to execute operation: %s", bus_error_message(&error, r));
2820
2821         return r;
2822 #else
2823         return -ENOSYS;
2824 #endif
2825 }
2826
2827 static int check_inhibitors(sd_bus *bus, enum action a) {
2828 #ifdef HAVE_LOGIND
2829         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2830         _cleanup_strv_free_ char **sessions = NULL;
2831         const char *what, *who, *why, *mode;
2832         uint32_t uid, pid;
2833         unsigned c = 0;
2834         char **s;
2835         int r;
2836
2837         if (!bus)
2838                 return 0;
2839
2840         if (arg_ignore_inhibitors || arg_force > 0)
2841                 return 0;
2842
2843         if (arg_when > 0)
2844                 return 0;
2845
2846         if (geteuid() == 0)
2847                 return 0;
2848
2849         if (!on_tty())
2850                 return 0;
2851
2852         r = sd_bus_call_method(
2853                         bus,
2854                         "org.freedesktop.login1",
2855                         "/org/freedesktop/login1",
2856                         "org.freedesktop.login1.Manager",
2857                         "ListInhibitors",
2858                         NULL,
2859                         &reply,
2860                         NULL);
2861         if (r < 0)
2862                 /* If logind is not around, then there are no inhibitors... */
2863                 return 0;
2864
2865         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssuu)");
2866         if (r < 0)
2867                 return bus_log_parse_error(r);
2868
2869         while ((r = sd_bus_message_read(reply, "(ssssuu)", &what, &who, &why, &mode, &uid, &pid)) > 0) {
2870                 _cleanup_free_ char *comm = NULL, *user = NULL;
2871                 _cleanup_strv_free_ char **sv = NULL;
2872
2873                 if (!streq(mode, "block"))
2874                         continue;
2875
2876                 sv = strv_split(what, ":");
2877                 if (!sv)
2878                         return log_oom();
2879
2880                 if (!strv_contains(sv,
2881                                   a == ACTION_HALT ||
2882                                   a == ACTION_POWEROFF ||
2883                                   a == ACTION_REBOOT ||
2884                                   a == ACTION_KEXEC ? "shutdown" : "sleep"))
2885                         continue;
2886
2887                 get_process_comm(pid, &comm);
2888                 user = uid_to_name(uid);
2889
2890                 log_warning("Operation inhibited by \"%s\" (PID "PID_FMT" \"%s\", user %s), reason is \"%s\".",
2891                             who, pid, strna(comm), strna(user), why);
2892
2893                 c++;
2894         }
2895         if (r < 0)
2896                 return bus_log_parse_error(r);
2897
2898         r = sd_bus_message_exit_container(reply);
2899         if (r < 0)
2900                 return bus_log_parse_error(r);
2901
2902         /* Check for current sessions */
2903         sd_get_sessions(&sessions);
2904         STRV_FOREACH(s, sessions) {
2905                 _cleanup_free_ char *type = NULL, *tty = NULL, *seat = NULL, *user = NULL, *service = NULL, *class = NULL;
2906
2907                 if (sd_session_get_uid(*s, &uid) < 0 || uid == getuid())
2908                         continue;
2909
2910                 if (sd_session_get_class(*s, &class) < 0 || !streq(class, "user"))
2911                         continue;
2912
2913                 if (sd_session_get_type(*s, &type) < 0 || (!streq(type, "x11") && !streq(type, "tty")))
2914                         continue;
2915
2916                 sd_session_get_tty(*s, &tty);
2917                 sd_session_get_seat(*s, &seat);
2918                 sd_session_get_service(*s, &service);
2919                 user = uid_to_name(uid);
2920
2921                 log_warning("User %s is logged in on %s.", strna(user), isempty(tty) ? (isempty(seat) ? strna(service) : seat) : tty);
2922                 c++;
2923         }
2924
2925         if (c <= 0)
2926                 return 0;
2927
2928         log_error("Please retry operation after closing inhibitors and logging out other users.\nAlternatively, ignore inhibitors and users with 'systemctl %s -i'.",
2929                   action_table[a].verb);
2930
2931         return -EPERM;
2932 #else
2933         return 0;
2934 #endif
2935 }
2936
2937 static int start_special(sd_bus *bus, char **args) {
2938         enum action a;
2939         int r;
2940
2941         assert(args);
2942
2943         a = verb_to_action(args[0]);
2944
2945         r = check_inhibitors(bus, a);
2946         if (r < 0)
2947                 return r;
2948
2949         if (arg_force >= 2 && geteuid() != 0) {
2950                 log_error("Must be root.");
2951                 return -EPERM;
2952         }
2953
2954         if (arg_force >= 2 &&
2955             (a == ACTION_HALT ||
2956              a == ACTION_POWEROFF ||
2957              a == ACTION_REBOOT))
2958                 return halt_now(a);
2959
2960         if (arg_force >= 1 &&
2961             (a == ACTION_HALT ||
2962              a == ACTION_POWEROFF ||
2963              a == ACTION_REBOOT ||
2964              a == ACTION_KEXEC ||
2965              a == ACTION_EXIT))
2966                 return daemon_reload(bus, args);
2967
2968         /* first try logind, to allow authentication with polkit */
2969         if (geteuid() != 0 &&
2970             (a == ACTION_POWEROFF ||
2971              a == ACTION_REBOOT ||
2972              a == ACTION_SUSPEND ||
2973              a == ACTION_HIBERNATE ||
2974              a == ACTION_HYBRID_SLEEP)) {
2975                 r = reboot_with_logind(bus, a);
2976                 if (r >= 0)
2977                         return r;
2978         }
2979
2980         r = start_unit(bus, args);
2981         if (r == EXIT_SUCCESS)
2982                 warn_wall(a);
2983
2984         return r;
2985 }
2986
2987 static int check_unit_generic(sd_bus *bus, int code, const char *good_states, char **args) {
2988         _cleanup_strv_free_ char **names = NULL;
2989         char **name;
2990         int r;
2991
2992         assert(bus);
2993         assert(args);
2994
2995         r = expand_names(bus, args, NULL, &names);
2996         if (r < 0) {
2997                 log_error("Failed to expand names: %s", strerror(-r));
2998                 return r;
2999         }
3000
3001         STRV_FOREACH(name, names) {
3002                 int state;
3003
3004                 state = check_one_unit(bus, *name, good_states, arg_quiet);
3005                 if (state < 0)
3006                         return state;
3007                 if (state == 0)
3008                         r = code;
3009         }
3010
3011         return r;
3012 }
3013
3014 static int check_unit_active(sd_bus *bus, char **args) {
3015         /* According to LSB: 3, "program is not running" */
3016         return check_unit_generic(bus, 3, "active\0reloading\0", args + 1);
3017 }
3018
3019 static int check_unit_failed(sd_bus *bus, char **args) {
3020         return check_unit_generic(bus, 1, "failed\0", args + 1);
3021 }
3022
3023 static int kill_unit(sd_bus *bus, char **args) {
3024         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
3025         _cleanup_strv_free_ char **names = NULL;
3026         char **name;
3027         int r, q;
3028
3029         assert(bus);
3030         assert(args);
3031
3032         if (!arg_kill_who)
3033                 arg_kill_who = "all";
3034
3035         r = expand_names(bus, args + 1, NULL, &names);
3036         if (r < 0)
3037                 log_error("Failed to expand names: %s", strerror(-r));
3038
3039         STRV_FOREACH(name, names) {
3040                 q = sd_bus_call_method(
3041                                 bus,
3042                                 "org.freedesktop.systemd1",
3043                                 "/org/freedesktop/systemd1",
3044                                 "org.freedesktop.systemd1.Manager",
3045                                 "KillUnit",
3046                                 &error,
3047                                 NULL,
3048                                 "ssi", *names, arg_kill_who, arg_signal);
3049                 if (q < 0) {
3050                         log_error("Failed to kill unit %s: %s",
3051                                   *names, bus_error_message(&error, r));
3052                         if (r == 0)
3053                                 r = q;
3054                 }
3055         }
3056
3057         return r;
3058 }
3059
3060 typedef struct ExecStatusInfo {
3061         char *name;
3062
3063         char *path;
3064         char **argv;
3065
3066         bool ignore;
3067
3068         usec_t start_timestamp;
3069         usec_t exit_timestamp;
3070         pid_t pid;
3071         int code;
3072         int status;
3073
3074         LIST_FIELDS(struct ExecStatusInfo, exec);
3075 } ExecStatusInfo;
3076
3077 static void exec_status_info_free(ExecStatusInfo *i) {
3078         assert(i);
3079
3080         free(i->name);
3081         free(i->path);
3082         strv_free(i->argv);
3083         free(i);
3084 }
3085
3086 static int exec_status_info_deserialize(sd_bus_message *m, ExecStatusInfo *i) {
3087         uint64_t start_timestamp, exit_timestamp, start_timestamp_monotonic, exit_timestamp_monotonic;
3088         const char *path;
3089         uint32_t pid;
3090         int32_t code, status;
3091         int ignore, r;
3092
3093         assert(m);
3094         assert(i);
3095
3096         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_STRUCT, "sasbttttuii");
3097         if (r < 0)
3098                 return bus_log_parse_error(r);
3099         else if (r == 0)
3100                 return 0;
3101
3102         r = sd_bus_message_read(m, "s", &path);
3103         if (r < 0)
3104                 return bus_log_parse_error(r);
3105
3106         i->path = strdup(path);
3107         if (!i->path)
3108                 return log_oom();
3109
3110         r = sd_bus_message_read_strv(m, &i->argv);
3111         if (r < 0)
3112                 return bus_log_parse_error(r);
3113
3114         r = sd_bus_message_read(m,
3115                                 "bttttuii",
3116                                 &ignore,
3117                                 &start_timestamp, &start_timestamp_monotonic,
3118                                 &exit_timestamp, &exit_timestamp_monotonic,
3119                                 &pid,
3120                                 &code, &status);
3121         if (r < 0)
3122                 return bus_log_parse_error(r);
3123
3124         i->ignore = ignore;
3125         i->start_timestamp = (usec_t) start_timestamp;
3126         i->exit_timestamp = (usec_t) exit_timestamp;
3127         i->pid = (pid_t) pid;
3128         i->code = code;
3129         i->status = status;
3130
3131         r = sd_bus_message_exit_container(m);
3132         if (r < 0)
3133                 return bus_log_parse_error(r);
3134
3135         return 1;
3136 }
3137
3138 typedef struct UnitStatusInfo {
3139         const char *id;
3140         const char *load_state;
3141         const char *active_state;
3142         const char *sub_state;
3143         const char *unit_file_state;
3144
3145         const char *description;
3146         const char *following;
3147
3148         char **documentation;
3149
3150         const char *fragment_path;
3151         const char *source_path;
3152         const char *control_group;
3153
3154         char **dropin_paths;
3155
3156         const char *load_error;
3157         const char *result;
3158
3159         usec_t inactive_exit_timestamp;
3160         usec_t inactive_exit_timestamp_monotonic;
3161         usec_t active_enter_timestamp;
3162         usec_t active_exit_timestamp;
3163         usec_t inactive_enter_timestamp;
3164
3165         bool need_daemon_reload;
3166
3167         /* Service */
3168         pid_t main_pid;
3169         pid_t control_pid;
3170         const char *status_text;
3171         const char *pid_file;
3172         bool running:1;
3173         int status_errno;
3174
3175         usec_t start_timestamp;
3176         usec_t exit_timestamp;
3177
3178         int exit_code, exit_status;
3179
3180         usec_t condition_timestamp;
3181         bool condition_result;
3182         bool failed_condition_trigger;
3183         bool failed_condition_negate;
3184         const char *failed_condition;
3185         const char *failed_condition_param;
3186
3187         /* Socket */
3188         unsigned n_accepted;
3189         unsigned n_connections;
3190         bool accept;
3191
3192         /* Pairs of type, path */
3193         char **listen;
3194
3195         /* Device */
3196         const char *sysfs_path;
3197
3198         /* Mount, Automount */
3199         const char *where;
3200
3201         /* Swap */
3202         const char *what;
3203
3204         LIST_HEAD(ExecStatusInfo, exec);
3205 } UnitStatusInfo;
3206
3207 static void print_status_info(
3208                 UnitStatusInfo *i,
3209                 bool *ellipsized) {
3210
3211         ExecStatusInfo *p;
3212         const char *active_on, *active_off, *on, *off, *ss;
3213         usec_t timestamp;
3214         char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], *s1;
3215         char since2[FORMAT_TIMESTAMP_MAX], *s2;
3216         const char *path;
3217         int flags =
3218                 arg_all * OUTPUT_SHOW_ALL |
3219                 (!on_tty() || pager_have()) * OUTPUT_FULL_WIDTH |
3220                 on_tty() * OUTPUT_COLOR |
3221                 !arg_quiet * OUTPUT_WARN_CUTOFF |
3222                 arg_full * OUTPUT_FULL_WIDTH;
3223         char **t, **t2;
3224
3225         assert(i);
3226
3227         /* This shows pretty information about a unit. See
3228          * print_property() for a low-level property printer */
3229
3230         if (streq_ptr(i->active_state, "failed")) {
3231                 active_on = ansi_highlight_red();
3232                 active_off = ansi_highlight_off();
3233         } else if (streq_ptr(i->active_state, "active") || streq_ptr(i->active_state, "reloading")) {
3234                 active_on = ansi_highlight_green();
3235                 active_off = ansi_highlight_off();
3236         } else
3237                 active_on = active_off = "";
3238
3239         printf("%s%s%s %s", active_on, draw_special_char(DRAW_BLACK_CIRCLE), active_off, strna(i->id));
3240
3241         if (i->description && !streq_ptr(i->id, i->description))
3242                 printf(" - %s", i->description);
3243
3244         printf("\n");
3245
3246         if (i->following)
3247                 printf("   Follow: unit currently follows state of %s\n", i->following);
3248
3249         if (streq_ptr(i->load_state, "error")) {
3250                 on = ansi_highlight_red();
3251                 off = ansi_highlight_off();
3252         } else
3253                 on = off = "";
3254
3255         path = i->source_path ? i->source_path : i->fragment_path;
3256
3257         if (i->load_error)
3258                 printf("   Loaded: %s%s%s (Reason: %s)\n",
3259                        on, strna(i->load_state), off, i->load_error);
3260         else if (path && i->unit_file_state)
3261                 printf("   Loaded: %s%s%s (%s; %s)\n",
3262                        on, strna(i->load_state), off, path, i->unit_file_state);
3263         else if (path)
3264                 printf("   Loaded: %s%s%s (%s)\n",
3265                        on, strna(i->load_state), off, path);
3266         else
3267                 printf("   Loaded: %s%s%s\n",
3268                        on, strna(i->load_state), off);
3269
3270         if (!strv_isempty(i->dropin_paths)) {
3271                 _cleanup_free_ char *dir = NULL;
3272                 bool last = false;
3273                 char ** dropin;
3274
3275                 STRV_FOREACH(dropin, i->dropin_paths) {
3276                         if (! dir || last) {
3277                                 printf(dir ? "        " : "  Drop-In: ");
3278
3279                                 free(dir);
3280                                 dir = NULL;
3281
3282                                 if (path_get_parent(*dropin, &dir) < 0) {
3283                                         log_oom();
3284                                         return;
3285                                 }
3286
3287                                 printf("%s\n           %s", dir,
3288                                        draw_special_char(DRAW_TREE_RIGHT));
3289                         }
3290
3291                         last = ! (*(dropin + 1) && startswith(*(dropin + 1), dir));
3292
3293                         printf("%s%s", basename(*dropin), last ? "\n" : ", ");
3294                 }
3295         }
3296
3297         ss = streq_ptr(i->active_state, i->sub_state) ? NULL : i->sub_state;
3298         if (ss)
3299                 printf("   Active: %s%s (%s)%s",
3300                        active_on, strna(i->active_state), ss, active_off);
3301         else
3302                 printf("   Active: %s%s%s",
3303                        active_on, strna(i->active_state), active_off);
3304
3305         if (!isempty(i->result) && !streq(i->result, "success"))
3306                 printf(" (Result: %s)", i->result);
3307
3308         timestamp = (streq_ptr(i->active_state, "active")      ||
3309                      streq_ptr(i->active_state, "reloading"))   ? i->active_enter_timestamp :
3310                     (streq_ptr(i->active_state, "inactive")    ||
3311                      streq_ptr(i->active_state, "failed"))      ? i->inactive_enter_timestamp :
3312                     streq_ptr(i->active_state, "activating")    ? i->inactive_exit_timestamp :
3313                                                                   i->active_exit_timestamp;
3314
3315         s1 = format_timestamp_relative(since1, sizeof(since1), timestamp);
3316         s2 = format_timestamp(since2, sizeof(since2), timestamp);
3317
3318         if (s1)
3319                 printf(" since %s; %s\n", s2, s1);
3320         else if (s2)
3321                 printf(" since %s\n", s2);
3322         else
3323                 printf("\n");
3324
3325         if (!i->condition_result && i->condition_timestamp > 0) {
3326                 s1 = format_timestamp_relative(since1, sizeof(since1), i->condition_timestamp);
3327                 s2 = format_timestamp(since2, sizeof(since2), i->condition_timestamp);
3328
3329                 printf("           start condition failed at %s%s%s\n",
3330                        s2, s1 ? "; " : "", s1 ? s1 : "");
3331                 if (i->failed_condition_trigger)
3332                         printf("           none of the trigger conditions were met\n");
3333                 else if (i->failed_condition)
3334                         printf("           %s=%s%s was not met\n",
3335                                i->failed_condition,
3336                                i->failed_condition_negate ? "!" : "",
3337                                i->failed_condition_param);
3338         }
3339
3340         if (i->sysfs_path)
3341                 printf("   Device: %s\n", i->sysfs_path);
3342         if (i->where)
3343                 printf("    Where: %s\n", i->where);
3344         if (i->what)
3345                 printf("     What: %s\n", i->what);
3346
3347         STRV_FOREACH(t, i->documentation)
3348                 printf(" %*s %s\n", 9, t == i->documentation ? "Docs:" : "", *t);
3349
3350         STRV_FOREACH_PAIR(t, t2, i->listen)
3351                 printf(" %*s %s (%s)\n", 9, t == i->listen ? "Listen:" : "", *t2, *t);
3352
3353         if (i->accept)
3354                 printf(" Accepted: %u; Connected: %u\n", i->n_accepted, i->n_connections);
3355
3356         LIST_FOREACH(exec, p, i->exec) {
3357                 _cleanup_free_ char *argv = NULL;
3358                 bool good;
3359
3360                 /* Only show exited processes here */
3361                 if (p->code == 0)
3362                         continue;
3363
3364                 argv = strv_join(p->argv, " ");
3365                 printf("  Process: %u %s=%s ", p->pid, p->name, strna(argv));
3366
3367                 good = is_clean_exit_lsb(p->code, p->status, NULL);
3368                 if (!good) {
3369                         on = ansi_highlight_red();
3370                         off = ansi_highlight_off();
3371                 } else
3372                         on = off = "";
3373
3374                 printf("%s(code=%s, ", on, sigchld_code_to_string(p->code));
3375
3376                 if (p->code == CLD_EXITED) {
3377                         const char *c;
3378
3379                         printf("status=%i", p->status);
3380
3381                         c = exit_status_to_string(p->status, EXIT_STATUS_SYSTEMD);
3382                         if (c)
3383                                 printf("/%s", c);
3384
3385                 } else
3386                         printf("signal=%s", signal_to_string(p->status));
3387
3388                 printf(")%s\n", off);
3389
3390                 if (i->main_pid == p->pid &&
3391                     i->start_timestamp == p->start_timestamp &&
3392                     i->exit_timestamp == p->start_timestamp)
3393                         /* Let's not show this twice */
3394                         i->main_pid = 0;
3395
3396                 if (p->pid == i->control_pid)
3397                         i->control_pid = 0;
3398         }
3399
3400         if (i->main_pid > 0 || i->control_pid > 0) {
3401                 if (i->main_pid > 0) {
3402                         printf(" Main PID: %u", (unsigned) i->main_pid);
3403
3404                         if (i->running) {
3405                                 _cleanup_free_ char *comm = NULL;
3406                                 get_process_comm(i->main_pid, &comm);
3407                                 if (comm)
3408                                         printf(" (%s)", comm);
3409                         } else if (i->exit_code > 0) {
3410                                 printf(" (code=%s, ", sigchld_code_to_string(i->exit_code));
3411
3412                                 if (i->exit_code == CLD_EXITED) {
3413                                         const char *c;
3414
3415                                         printf("status=%i", i->exit_status);
3416
3417                                         c = exit_status_to_string(i->exit_status, EXIT_STATUS_SYSTEMD);
3418                                         if (c)
3419                                                 printf("/%s", c);
3420
3421                                 } else
3422                                         printf("signal=%s", signal_to_string(i->exit_status));
3423                                 printf(")");
3424                         }
3425
3426                         if (i->control_pid > 0)
3427                                 printf(";");
3428                 }
3429
3430                 if (i->control_pid > 0) {
3431                         _cleanup_free_ char *c = NULL;
3432
3433                         printf(" %8s: %u", i->main_pid ? "" : " Control", (unsigned) i->control_pid);
3434
3435                         get_process_comm(i->control_pid, &c);
3436                         if (c)
3437                                 printf(" (%s)", c);
3438                 }
3439
3440                 printf("\n");
3441         }
3442
3443         if (i->status_text)
3444                 printf("   Status: \"%s\"\n", i->status_text);
3445         if (i->status_errno > 0)
3446                 printf("    Error: %i (%s)\n", i->status_errno, strerror(i->status_errno));
3447
3448         if (i->control_group &&
3449             (i->main_pid > 0 || i->control_pid > 0 ||
3450              ((arg_transport != BUS_TRANSPORT_LOCAL && arg_transport != BUS_TRANSPORT_CONTAINER) || cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, i->control_group, false) == 0))) {
3451                 unsigned c;
3452
3453                 printf("   CGroup: %s\n", i->control_group);
3454
3455                 if (arg_transport == BUS_TRANSPORT_LOCAL || arg_transport == BUS_TRANSPORT_CONTAINER) {
3456                         unsigned k = 0;
3457                         pid_t extra[2];
3458                         static const char prefix[] = "           ";
3459
3460                         c = columns();
3461                         if (c > sizeof(prefix) - 1)
3462                                 c -= sizeof(prefix) - 1;
3463                         else
3464                                 c = 0;
3465
3466                         if (i->main_pid > 0)
3467                                 extra[k++] = i->main_pid;
3468
3469                         if (i->control_pid > 0)
3470                                 extra[k++] = i->control_pid;
3471
3472                         show_cgroup_and_extra(SYSTEMD_CGROUP_CONTROLLER, i->control_group, prefix, c, false, extra, k, flags);
3473                 }
3474         }
3475
3476         if (i->id && arg_transport == BUS_TRANSPORT_LOCAL) {
3477                 show_journal_by_unit(stdout,
3478                                      i->id,
3479                                      arg_output,
3480                                      0,
3481                                      i->inactive_exit_timestamp_monotonic,
3482                                      arg_lines,
3483                                      getuid(),
3484                                      flags | OUTPUT_BEGIN_NEWLINE,
3485                                      arg_scope == UNIT_FILE_SYSTEM,
3486                                      ellipsized);
3487         }
3488
3489         if (i->need_daemon_reload)
3490                 printf("\n%sWarning:%s Unit file changed on disk, 'systemctl %sdaemon-reload' recommended.\n",
3491                        ansi_highlight_red(),
3492                        ansi_highlight_off(),
3493                        arg_scope == UNIT_FILE_SYSTEM ? "" : "--user ");
3494 }
3495
3496 static void show_unit_help(UnitStatusInfo *i) {
3497         char **p;
3498
3499         assert(i);
3500
3501         if (!i->documentation) {
3502                 log_info("Documentation for %s not known.", i->id);
3503                 return;
3504         }
3505
3506         STRV_FOREACH(p, i->documentation)
3507                 if (startswith(*p, "man:"))
3508                         show_man_page(*p + 4, false);
3509                 else
3510                         log_info("Can't show: %s", *p);
3511 }
3512
3513 static int status_property(const char *name, sd_bus_message *m, UnitStatusInfo *i, const char *contents) {
3514         int r;
3515
3516         assert(name);
3517         assert(m);
3518         assert(i);
3519
3520         switch (contents[0]) {
3521
3522         case SD_BUS_TYPE_STRING: {
3523                 const char *s;
3524
3525                 r = sd_bus_message_read(m, "s", &s);
3526                 if (r < 0)
3527                         return bus_log_parse_error(r);
3528
3529                 if (!isempty(s)) {
3530                         if (streq(name, "Id"))
3531                                 i->id = s;
3532                         else if (streq(name, "LoadState"))
3533                                 i->load_state = s;
3534                         else if (streq(name, "ActiveState"))
3535                                 i->active_state = s;
3536                         else if (streq(name, "SubState"))
3537                                 i->sub_state = s;
3538                         else if (streq(name, "Description"))
3539                                 i->description = s;
3540                         else if (streq(name, "FragmentPath"))
3541                                 i->fragment_path = s;
3542                         else if (streq(name, "SourcePath"))
3543                                 i->source_path = s;
3544 #ifndef NOLEGACY
3545                         else if (streq(name, "DefaultControlGroup")) {
3546                                 const char *e;
3547                                 e = startswith(s, SYSTEMD_CGROUP_CONTROLLER ":");
3548                                 if (e)
3549                                         i->control_group = e;
3550                         }
3551 #endif
3552                         else if (streq(name, "ControlGroup"))
3553                                 i->control_group = s;
3554                         else if (streq(name, "StatusText"))
3555                                 i->status_text = s;
3556                         else if (streq(name, "PIDFile"))
3557                                 i->pid_file = s;
3558                         else if (streq(name, "SysFSPath"))
3559                                 i->sysfs_path = s;
3560                         else if (streq(name, "Where"))
3561                                 i->where = s;
3562                         else if (streq(name, "What"))
3563                                 i->what = s;
3564                         else if (streq(name, "Following"))
3565                                 i->following = s;
3566                         else if (streq(name, "UnitFileState"))
3567                                 i->unit_file_state = s;
3568                         else if (streq(name, "Result"))
3569                                 i->result = s;
3570                 }
3571
3572                 break;
3573         }
3574
3575         case SD_BUS_TYPE_BOOLEAN: {
3576                 int b;
3577
3578                 r = sd_bus_message_read(m, "b", &b);
3579                 if (r < 0)
3580                         return bus_log_parse_error(r);
3581
3582                 if (streq(name, "Accept"))
3583                         i->accept = b;
3584                 else if (streq(name, "NeedDaemonReload"))
3585                         i->need_daemon_reload = b;
3586                 else if (streq(name, "ConditionResult"))
3587                         i->condition_result = b;
3588
3589                 break;
3590         }
3591
3592         case SD_BUS_TYPE_UINT32: {
3593                 uint32_t u;
3594
3595                 r = sd_bus_message_read(m, "u", &u);
3596                 if (r < 0)
3597                         return bus_log_parse_error(r);
3598
3599                 if (streq(name, "MainPID")) {
3600                         if (u > 0) {
3601                                 i->main_pid = (pid_t) u;
3602                                 i->running = true;
3603                         }
3604                 } else if (streq(name, "ControlPID"))
3605                         i->control_pid = (pid_t) u;
3606                 else if (streq(name, "ExecMainPID")) {
3607                         if (u > 0)
3608                                 i->main_pid = (pid_t) u;
3609                 } else if (streq(name, "NAccepted"))
3610                         i->n_accepted = u;
3611                 else if (streq(name, "NConnections"))
3612                         i->n_connections = u;
3613
3614                 break;
3615         }
3616
3617         case SD_BUS_TYPE_INT32: {
3618                 int32_t j;
3619
3620                 r = sd_bus_message_read(m, "i", &j);
3621                 if (r < 0)
3622                         return bus_log_parse_error(r);
3623
3624                 if (streq(name, "ExecMainCode"))
3625                         i->exit_code = (int) j;
3626                 else if (streq(name, "ExecMainStatus"))
3627                         i->exit_status = (int) j;
3628                 else if (streq(name, "StatusErrno"))
3629                         i->status_errno = (int) j;
3630
3631                 break;
3632         }
3633
3634         case SD_BUS_TYPE_UINT64: {
3635                 uint64_t u;
3636
3637                 r = sd_bus_message_read(m, "t", &u);
3638                 if (r < 0)
3639                         return bus_log_parse_error(r);
3640
3641                 if (streq(name, "ExecMainStartTimestamp"))
3642                         i->start_timestamp = (usec_t) u;
3643                 else if (streq(name, "ExecMainExitTimestamp"))
3644                         i->exit_timestamp = (usec_t) u;
3645                 else if (streq(name, "ActiveEnterTimestamp"))
3646                         i->active_enter_timestamp = (usec_t) u;
3647                 else if (streq(name, "InactiveEnterTimestamp"))
3648                         i->inactive_enter_timestamp = (usec_t) u;
3649                 else if (streq(name, "InactiveExitTimestamp"))
3650                         i->inactive_exit_timestamp = (usec_t) u;
3651                 else if (streq(name, "InactiveExitTimestampMonotonic"))
3652                         i->inactive_exit_timestamp_monotonic = (usec_t) u;
3653                 else if (streq(name, "ActiveExitTimestamp"))
3654                         i->active_exit_timestamp = (usec_t) u;
3655                 else if (streq(name, "ConditionTimestamp"))
3656                         i->condition_timestamp = (usec_t) u;
3657
3658                 break;
3659         }
3660
3661         case SD_BUS_TYPE_ARRAY:
3662
3663                 if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && startswith(name, "Exec")) {
3664                         _cleanup_free_ ExecStatusInfo *info = NULL;
3665
3666                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sasbttttuii)");
3667                         if (r < 0)
3668                                 return bus_log_parse_error(r);
3669
3670                         info = new0(ExecStatusInfo, 1);
3671                         if (!info)
3672                                 return log_oom();
3673
3674                         while ((r = exec_status_info_deserialize(m, info)) > 0) {
3675
3676                                 info->name = strdup(name);
3677                                 if (!info->name)
3678                                         log_oom();
3679
3680                                 LIST_PREPEND(exec, i->exec, info);
3681
3682                                 info = new0(ExecStatusInfo, 1);
3683                                 if (!info)
3684                                         log_oom();
3685                         }
3686
3687                         if (r < 0)
3688                                 return bus_log_parse_error(r);
3689
3690                         r = sd_bus_message_exit_container(m);
3691                         if (r < 0)
3692                                 return bus_log_parse_error(r);
3693
3694                         return 0;
3695
3696                 } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "Listen")) {
3697                         const char *type, *path;
3698
3699                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(ss)");
3700                         if (r < 0)
3701                                 return bus_log_parse_error(r);
3702
3703                         while ((r = sd_bus_message_read(m, "(ss)", &type, &path)) > 0) {
3704
3705                                 r = strv_extend(&i->listen, type);
3706                                 if (r < 0)
3707                                         return r;
3708
3709                                 r = strv_extend(&i->listen, path);
3710                                 if (r < 0)
3711                                         return r;
3712                         }
3713                         if (r < 0)
3714                                 return bus_log_parse_error(r);
3715
3716                         r = sd_bus_message_exit_container(m);
3717                         if (r < 0)
3718                                 return bus_log_parse_error(r);
3719
3720                         return 0;
3721
3722                 } else if (contents[1] == SD_BUS_TYPE_STRING && streq(name, "DropInPaths")) {
3723
3724                         r = sd_bus_message_read_strv(m, &i->dropin_paths);
3725                         if (r < 0)
3726                                 return bus_log_parse_error(r);
3727
3728                 } else if (contents[1] == SD_BUS_TYPE_STRING && streq(name, "Documentation")) {
3729
3730                         r = sd_bus_message_read_strv(m, &i->documentation);
3731                         if (r < 0)
3732                                 return bus_log_parse_error(r);
3733
3734                 } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "Conditions")) {
3735                         const char *cond, *param;
3736                         int trigger, negate;
3737                         int32_t state;
3738
3739                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sbbsi)");
3740                         if (r < 0)
3741                                 return bus_log_parse_error(r);
3742
3743                         while ((r = sd_bus_message_read(m, "(sbbsi)", &cond, &trigger, &negate, &param, &state)) > 0) {
3744                                 log_debug("%s %d %d %s %d", cond, trigger, negate, param, state);
3745                                 if (state < 0 && (!trigger || !i->failed_condition)) {
3746                                         i->failed_condition = cond;
3747                                         i->failed_condition_trigger = trigger;
3748                                         i->failed_condition_negate = negate;
3749                                         i->failed_condition_param = param;
3750                                 }
3751                         }
3752                         if (r < 0)
3753                                 return bus_log_parse_error(r);
3754
3755                         r = sd_bus_message_exit_container(m);
3756                         if (r < 0)
3757                                 return bus_log_parse_error(r);
3758
3759                 } else
3760                         goto skip;
3761
3762                 break;
3763
3764         case SD_BUS_TYPE_STRUCT_BEGIN:
3765
3766                 if (streq(name, "LoadError")) {
3767                         const char *n, *message;
3768
3769                         r = sd_bus_message_read(m, "(ss)", &n, &message);
3770                         if (r < 0)
3771                                 return bus_log_parse_error(r);
3772
3773                         if (!isempty(message))
3774                                 i->load_error = message;
3775                 } else
3776                         goto skip;
3777
3778                 break;
3779
3780         default:
3781                 goto skip;
3782         }
3783
3784         return 0;
3785
3786 skip:
3787         r = sd_bus_message_skip(m, contents);
3788         if (r < 0)
3789                 return bus_log_parse_error(r);
3790
3791         return 0;
3792 }
3793
3794 static int print_property(const char *name, sd_bus_message *m, const char *contents) {
3795         int r;
3796
3797         assert(name);
3798         assert(m);
3799
3800         /* This is a low-level property printer, see
3801          * print_status_info() for the nicer output */
3802
3803         if (arg_properties && !strv_find(arg_properties, name)) {
3804                 /* skip what we didn't read */
3805                 r = sd_bus_message_skip(m, contents);
3806                 return r;
3807         }
3808
3809         switch (contents[0]) {
3810
3811         case SD_BUS_TYPE_STRUCT_BEGIN:
3812
3813                 if (contents[1] == SD_BUS_TYPE_UINT32 && streq(name, "Job")) {
3814                         uint32_t u;
3815
3816                         r = sd_bus_message_read(m, "(uo)", &u, NULL);
3817                         if (r < 0)
3818                                 return bus_log_parse_error(r);
3819
3820                         if (u > 0)
3821                                 printf("%s=%u\n", name, (unsigned) u);
3822                         else if (arg_all)
3823                                 printf("%s=\n", name);
3824
3825                         return 0;
3826
3827                 } else if (contents[1] == SD_BUS_TYPE_STRING && streq(name, "Unit")) {
3828                         const char *s;
3829
3830                         r = sd_bus_message_read(m, "(so)", &s, NULL);
3831                         if (r < 0)
3832                                 return bus_log_parse_error(r);
3833
3834                         if (arg_all || !isempty(s))
3835                                 printf("%s=%s\n", name, s);
3836
3837                         return 0;
3838
3839                 } else if (contents[1] == SD_BUS_TYPE_STRING && streq(name, "LoadError")) {
3840                         const char *a = NULL, *b = NULL;
3841
3842                         r = sd_bus_message_read(m, "(ss)", &a, &b);
3843                         if (r < 0)
3844                                 return bus_log_parse_error(r);
3845
3846                         if (arg_all || !isempty(a) || !isempty(b))
3847                                 printf("%s=%s \"%s\"\n", name, strempty(a), strempty(b));
3848
3849                         return 0;
3850                 } else if (streq_ptr(name, "SystemCallFilter")) {
3851                         _cleanup_strv_free_ char **l = NULL;
3852                         int whitelist;
3853
3854                         r = sd_bus_message_enter_container(m, 'r', "bas");
3855                         if (r < 0)
3856                                 return bus_log_parse_error(r);
3857
3858                         r = sd_bus_message_read(m, "b", &whitelist);
3859                         if (r < 0)
3860                                 return bus_log_parse_error(r);
3861
3862                         r = sd_bus_message_read_strv(m, &l);
3863                         if (r < 0)
3864                                 return bus_log_parse_error(r);
3865
3866                         r = sd_bus_message_exit_container(m);
3867                         if (r < 0)
3868                                 return bus_log_parse_error(r);
3869
3870                         if (arg_all || whitelist || !strv_isempty(l)) {
3871                                 bool first = true;
3872                                 char **i;
3873
3874                                 fputs(name, stdout);
3875                                 fputc('=', stdout);
3876
3877                                 if (!whitelist)
3878                                         fputc('~', stdout);
3879
3880                                 STRV_FOREACH(i, l) {
3881                                         if (first)
3882                                                 first = false;
3883                                         else
3884                                                 fputc(' ', stdout);
3885
3886                                         fputs(*i, stdout);
3887                                 }
3888                                 fputc('\n', stdout);
3889                         }
3890
3891                         return 0;
3892                 }
3893
3894                 break;
3895
3896         case SD_BUS_TYPE_ARRAY:
3897
3898                 if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "EnvironmentFiles")) {
3899                         const char *path;
3900                         int ignore;
3901
3902                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sb)");
3903                         if (r < 0)
3904                                 return bus_log_parse_error(r);
3905
3906                         while ((r = sd_bus_message_read(m, "(sb)", &path, &ignore)) > 0)
3907                                 printf("EnvironmentFile=%s (ignore_errors=%s)\n", path, yes_no(ignore));
3908
3909                         if (r < 0)
3910                                 return bus_log_parse_error(r);
3911
3912                         r = sd_bus_message_exit_container(m);
3913                         if (r < 0)
3914                                 return bus_log_parse_error(r);
3915
3916                         return 0;
3917
3918                 } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "Paths")) {
3919                         const char *type, *path;
3920
3921                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(ss)");
3922                         if (r < 0)
3923                                 return bus_log_parse_error(r);
3924
3925                         while ((r = sd_bus_message_read(m, "(ss)", &type, &path)) > 0)
3926                                 printf("%s=%s\n", type, path);
3927                         if (r < 0)
3928                                 return bus_log_parse_error(r);
3929
3930                         r = sd_bus_message_exit_container(m);
3931                         if (r < 0)
3932                                 return bus_log_parse_error(r);
3933
3934                         return 0;
3935
3936                 } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "Listen")) {
3937                         const char *type, *path;
3938
3939                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(ss)");
3940                         if (r < 0)
3941                                 return bus_log_parse_error(r);
3942
3943                         while ((r = sd_bus_message_read(m, "(ss)", &type, &path)) > 0)
3944                                 printf("Listen%s=%s\n", type, path);
3945                         if (r < 0)
3946                                 return bus_log_parse_error(r);
3947
3948                         r = sd_bus_message_exit_container(m);
3949                         if (r < 0)
3950                                 return bus_log_parse_error(r);
3951
3952                         return 0;
3953
3954                 } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "Timers")) {
3955                         const char *base;
3956                         uint64_t value, next_elapse;
3957
3958                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(stt)");
3959                         if (r < 0)
3960                                 return bus_log_parse_error(r);
3961
3962                         while ((r = sd_bus_message_read(m, "(stt)", &base, &value, &next_elapse)) > 0) {
3963                                 char timespan1[FORMAT_TIMESPAN_MAX], timespan2[FORMAT_TIMESPAN_MAX];
3964
3965                                 printf("%s={ value=%s ; next_elapse=%s }\n",
3966                                        base,
3967                                        format_timespan(timespan1, sizeof(timespan1), value, 0),
3968                                        format_timespan(timespan2, sizeof(timespan2), next_elapse, 0));
3969                         }
3970                         if (r < 0)
3971                                 return bus_log_parse_error(r);
3972
3973                         r = sd_bus_message_exit_container(m);
3974                         if (r < 0)
3975                                 return bus_log_parse_error(r);
3976
3977                         return 0;
3978
3979                 } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && startswith(name, "Exec")) {
3980                         ExecStatusInfo info = {};
3981
3982                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sasbttttuii)");
3983                         if (r < 0)
3984                                 return bus_log_parse_error(r);
3985
3986                         while ((r = exec_status_info_deserialize(m, &info)) > 0) {
3987                                 char timestamp1[FORMAT_TIMESTAMP_MAX], timestamp2[FORMAT_TIMESTAMP_MAX];
3988                                 _cleanup_free_ char *tt;
3989
3990                                 tt = strv_join(info.argv, " ");
3991
3992                                 printf("%s={ path=%s ; argv[]=%s ; ignore_errors=%s ; start_time=[%s] ; stop_time=[%s] ; pid=%u ; code=%s ; status=%i%s%s }\n",
3993                                        name,
3994                                        strna(info.path),
3995                                        strna(tt),
3996                                        yes_no(info.ignore),
3997                                        strna(format_timestamp(timestamp1, sizeof(timestamp1), info.start_timestamp)),
3998                                        strna(format_timestamp(timestamp2, sizeof(timestamp2), info.exit_timestamp)),
3999                                        (unsigned) info. pid,
4000                                        sigchld_code_to_string(info.code),
4001                                        info.status,
4002                                        info.code == CLD_EXITED ? "" : "/",
4003                                        strempty(info.code == CLD_EXITED ? NULL : signal_to_string(info.status)));
4004
4005                                 free(info.path);
4006                                 strv_free(info.argv);
4007                                 zero(info);
4008                         }
4009
4010                         r = sd_bus_message_exit_container(m);
4011                         if (r < 0)
4012                                 return bus_log_parse_error(r);
4013
4014                         return 0;
4015
4016                 } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "DeviceAllow")) {
4017                         const char *path, *rwm;
4018
4019                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(ss)");
4020                         if (r < 0)
4021                                 return bus_log_parse_error(r);
4022
4023                         while ((r = sd_bus_message_read(m, "(ss)", &path, &rwm)) > 0)
4024                                 printf("%s=%s %s\n", name, strna(path), strna(rwm));
4025                         if (r < 0)
4026                                 return bus_log_parse_error(r);
4027
4028                         r = sd_bus_message_exit_container(m);
4029                         if (r < 0)
4030                                 return bus_log_parse_error(r);
4031
4032                         return 0;
4033
4034                 } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "BlockIODeviceWeight")) {
4035                         const char *path;
4036                         uint64_t weight;
4037
4038                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(st)");
4039                         if (r < 0)
4040                                 return bus_log_parse_error(r);
4041
4042                         while ((r = sd_bus_message_read(m, "(st)", &path, &weight)) > 0)
4043                                 printf("%s=%s %" PRIu64 "\n", name, strna(path), weight);
4044                         if (r < 0)
4045                                 return bus_log_parse_error(r);
4046
4047                         r = sd_bus_message_exit_container(m);
4048                         if (r < 0)
4049                                 return bus_log_parse_error(r);
4050
4051                         return 0;
4052
4053                 } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && (streq(name, "BlockIOReadBandwidth") || streq(name, "BlockIOWriteBandwidth"))) {
4054                         const char *path;
4055                         uint64_t bandwidth;
4056
4057                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(st)");
4058                         if (r < 0)
4059                                 return bus_log_parse_error(r);
4060
4061                         while ((r = sd_bus_message_read(m, "(st)", &path, &bandwidth)) > 0)
4062                                 printf("%s=%s %" PRIu64 "\n", name, strna(path), bandwidth);
4063                         if (r < 0)
4064                                 return bus_log_parse_error(r);
4065
4066                         r = sd_bus_message_exit_container(m);
4067                         if (r < 0)
4068                                 return bus_log_parse_error(r);
4069
4070                         return 0;
4071                 }
4072
4073                 break;
4074         }
4075
4076         r = bus_print_property(name, m, arg_all);
4077         if (r < 0)
4078                 return bus_log_parse_error(r);
4079
4080         if (r == 0) {
4081                 r = sd_bus_message_skip(m, contents);
4082                 if (r < 0)
4083                         return bus_log_parse_error(r);
4084
4085                 if (arg_all)
4086                         printf("%s=[unprintable]\n", name);
4087         }
4088
4089         return 0;
4090 }
4091
4092 static int show_one(
4093                 const char *verb,
4094                 sd_bus *bus,
4095                 const char *path,
4096                 bool show_properties,
4097                 bool *new_line,
4098                 bool *ellipsized) {
4099
4100         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
4101         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4102         UnitStatusInfo info = {};
4103         ExecStatusInfo *p;
4104         int r;
4105
4106         assert(path);
4107         assert(new_line);
4108
4109         log_debug("Showing one %s", path);
4110
4111         r = sd_bus_call_method(
4112                         bus,
4113                         "org.freedesktop.systemd1",
4114                         path,
4115                         "org.freedesktop.DBus.Properties",
4116                         "GetAll",
4117                         &error,
4118                         &reply,
4119                         "s", "");
4120         if (r < 0) {
4121                 log_error("Failed to get properties: %s", bus_error_message(&error, r));
4122                 return r;
4123         }
4124
4125         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "{sv}");
4126         if (r < 0)
4127                 return bus_log_parse_error(r);
4128
4129         if (*new_line)
4130                 printf("\n");
4131
4132         *new_line = true;
4133
4134         while ((r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) {
4135                 const char *name, *contents;
4136
4137                 r = sd_bus_message_read(reply, "s", &name);
4138                 if (r < 0)
4139                         return bus_log_parse_error(r);
4140
4141                 r = sd_bus_message_peek_type(reply, NULL, &contents);
4142                 if (r < 0)
4143                         return bus_log_parse_error(r);
4144
4145                 r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_VARIANT, contents);
4146                 if (r < 0)
4147                         return bus_log_parse_error(r);
4148
4149                 if (show_properties)
4150                         r = print_property(name, reply, contents);
4151                 else
4152                         r = status_property(name, reply, &info, contents);
4153                 if (r < 0)
4154                         return r;
4155
4156                 r = sd_bus_message_exit_container(reply);
4157                 if (r < 0)
4158                         return bus_log_parse_error(r);
4159
4160                 r = sd_bus_message_exit_container(reply);
4161                 if (r < 0)
4162                         return bus_log_parse_error(r);
4163         }
4164         if (r < 0)
4165                 return bus_log_parse_error(r);
4166
4167         r = sd_bus_message_exit_container(reply);
4168         if (r < 0)
4169                 return bus_log_parse_error(r);
4170
4171         r = 0;
4172
4173         if (!show_properties) {
4174                 if (streq(verb, "help"))
4175                         show_unit_help(&info);
4176                 else
4177                         print_status_info(&info, ellipsized);
4178         }
4179
4180         strv_free(info.documentation);
4181         strv_free(info.dropin_paths);
4182         strv_free(info.listen);
4183
4184         if (!streq_ptr(info.active_state, "active") &&
4185             !streq_ptr(info.active_state, "reloading") &&
4186             streq(verb, "status")) {
4187                 /* According to LSB: "program not running" */
4188                 /* 0: program is running or service is OK
4189                  * 1: program is dead and /run PID file exists
4190                  * 2: program is dead and /run/lock lock file exists
4191                  * 3: program is not running
4192                  * 4: program or service status is unknown
4193                  */
4194                 if (info.pid_file && access(info.pid_file, F_OK) == 0)
4195                         r = 1;
4196                 else
4197                         r = 3;
4198         }
4199
4200         while ((p = info.exec)) {
4201                 LIST_REMOVE(exec, info.exec, p);
4202                 exec_status_info_free(p);
4203         }
4204
4205         return r;
4206 }
4207
4208 static int get_unit_dbus_path_by_pid(
4209                 sd_bus *bus,
4210                 uint32_t pid,
4211                 char **unit) {
4212
4213         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4214         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
4215         char *u;
4216         int r;
4217
4218         r = sd_bus_call_method(
4219                         bus,
4220                         "org.freedesktop.systemd1",
4221                         "/org/freedesktop/systemd1",
4222                         "org.freedesktop.systemd1.Manager",
4223                         "GetUnitByPID",
4224                         &error,
4225                         &reply,
4226                         "u", pid);
4227         if (r < 0) {
4228                 log_error("Failed to get unit for PID "PID_FMT": %s", pid, bus_error_message(&error, r));
4229                 return r;
4230         }
4231
4232         r = sd_bus_message_read(reply, "o", &u);
4233         if (r < 0)
4234                 return bus_log_parse_error(r);
4235
4236         u = strdup(u);
4237         if (!u)
4238                 return log_oom();
4239
4240         *unit = u;
4241         return 0;
4242 }
4243
4244 static int show_all(
4245                 const char* verb,
4246                 sd_bus *bus,
4247                 bool show_properties,
4248                 bool *new_line,
4249                 bool *ellipsized) {
4250
4251         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
4252         _cleanup_free_ UnitInfo *unit_infos = NULL;
4253         const UnitInfo *u;
4254         unsigned c;
4255         int r, ret = 0;
4256
4257         r = get_unit_list(bus, NULL, NULL, &unit_infos, 0, &reply);
4258         if (r < 0)
4259                 return r;
4260
4261         pager_open_if_enabled();
4262
4263         c = (unsigned) r;
4264
4265         qsort_safe(unit_infos, c, sizeof(UnitInfo), compare_unit_info);
4266
4267         for (u = unit_infos; u < unit_infos + c; u++) {
4268                 _cleanup_free_ char *p = NULL;
4269
4270                 p = unit_dbus_path_from_name(u->id);
4271                 if (!p)
4272                         return log_oom();
4273
4274                 r = show_one(verb, bus, p, show_properties, new_line, ellipsized);
4275                 if (r < 0)
4276                         return r;
4277                 else if (r > 0 && ret == 0)
4278                         ret = r;
4279         }
4280
4281         return ret;
4282 }
4283
4284 static int show_system_status(sd_bus *bus) {
4285         char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], since2[FORMAT_TIMESTAMP_MAX];
4286         _cleanup_free_ char *hn = NULL;
4287         struct machine_info mi = {};
4288         const char *on, *off;
4289         int r;
4290
4291         hn = gethostname_malloc();
4292         if (!hn)
4293                 return log_oom();
4294
4295         r = bus_map_all_properties(bus, "org.freedesktop.systemd1", "/org/freedesktop/systemd1", machine_info_property_map, &mi);
4296         if (r < 0) {
4297                 log_error("Failed to read server status: %s", strerror(-r));
4298                 return r;
4299         }
4300
4301         if (streq_ptr(mi.state, "degraded")) {
4302                 on = ansi_highlight_red();
4303                 off = ansi_highlight_off();
4304         } else if (!streq_ptr(mi.state, "running")) {
4305                 on = ansi_highlight_yellow();
4306                 off = ansi_highlight_off();
4307         } else
4308                 on = off = "";
4309
4310         printf("%s%s%s %s\n", on, draw_special_char(DRAW_BLACK_CIRCLE), off, arg_host ? arg_host : hn);
4311
4312         printf("    State: %s%s%s\n",
4313                on, strna(mi.state), off);
4314
4315         printf("     Jobs: %u queued\n", mi.n_jobs);
4316         printf("   Failed: %u units\n", mi.n_failed_units);
4317
4318         printf("    Since: %s; %s\n",
4319                format_timestamp(since2, sizeof(since2), mi.timestamp),
4320                format_timestamp_relative(since1, sizeof(since1), mi.timestamp));
4321
4322         printf("   CGroup: %s\n", mi.control_group ?: "/");
4323         if (arg_transport == BUS_TRANSPORT_LOCAL || arg_transport == BUS_TRANSPORT_CONTAINER) {
4324                 int flags =
4325                         arg_all * OUTPUT_SHOW_ALL |
4326                         (!on_tty() || pager_have()) * OUTPUT_FULL_WIDTH |
4327                         on_tty() * OUTPUT_COLOR |
4328                         !arg_quiet * OUTPUT_WARN_CUTOFF |
4329                         arg_full * OUTPUT_FULL_WIDTH;
4330
4331                 static const char prefix[] = "           ";
4332                 unsigned c;
4333
4334                 c = columns();
4335                 if (c > sizeof(prefix) - 1)
4336                         c -= sizeof(prefix) - 1;
4337                 else
4338                         c = 0;
4339
4340                 show_cgroup(SYSTEMD_CGROUP_CONTROLLER, strempty(mi.control_group), prefix, c, false, flags);
4341         }
4342
4343         free(mi.state);
4344         free(mi.control_group);
4345
4346         return 0;
4347 }
4348
4349 static int show(sd_bus *bus, char **args) {
4350         bool show_properties, show_status, new_line = false;
4351         bool ellipsized = false;
4352         int r, ret = 0;
4353
4354         assert(bus);
4355         assert(args);
4356
4357         show_properties = streq(args[0], "show");
4358         show_status = streq(args[0], "status");
4359
4360         if (show_properties)
4361                 pager_open_if_enabled();
4362
4363         /* If no argument is specified inspect the manager itself */
4364
4365         if (show_properties && strv_length(args) <= 1)
4366                 return show_one(args[0], bus, "/org/freedesktop/systemd1", show_properties, &new_line, &ellipsized);
4367
4368         if (show_status && strv_length(args) <= 1) {
4369
4370                 pager_open_if_enabled();
4371                 show_system_status(bus);
4372                 new_line = true;
4373
4374                 if (arg_all)
4375                         ret = show_all(args[0], bus, false, &new_line, &ellipsized);
4376         } else {
4377                 _cleanup_free_ char **patterns = NULL;
4378                 char **name;
4379
4380                 STRV_FOREACH(name, args + 1) {
4381                         _cleanup_free_ char *unit = NULL;
4382                         uint32_t id;
4383
4384                         if (safe_atou32(*name, &id) < 0) {
4385                                 if (strv_push(&patterns, *name) < 0)
4386                                         return log_oom();
4387
4388                                 continue;
4389                         } else if (show_properties) {
4390                                 /* Interpret as job id */
4391                                 if (asprintf(&unit, "/org/freedesktop/systemd1/job/%u", id) < 0)
4392                                         return log_oom();
4393
4394                         } else {
4395                                 /* Interpret as PID */
4396                                 r = get_unit_dbus_path_by_pid(bus, id, &unit);
4397                                 if (r < 0) {
4398                                         ret = r;
4399                                         continue;
4400                                 }
4401                         }
4402
4403                         r = show_one(args[0], bus, unit, show_properties,
4404                                      &new_line, &ellipsized);
4405                         if (r < 0)
4406                                 return r;
4407                         else if (r > 0 && ret == 0)
4408                                 ret = r;
4409                 }
4410
4411                 if (!strv_isempty(patterns)) {
4412                         _cleanup_strv_free_ char **names = NULL;
4413
4414                         r = expand_names(bus, patterns, NULL, &names);
4415                         if (r < 0)
4416                                 log_error("Failed to expand names: %s", strerror(-r));
4417
4418                         STRV_FOREACH(name, names) {
4419                                 _cleanup_free_ char *unit;
4420
4421                                 unit = unit_dbus_path_from_name(*name);
4422                                 if (!unit)
4423                                         return log_oom();
4424
4425                                 r = show_one(args[0], bus, unit, show_properties,
4426                                              &new_line, &ellipsized);
4427                                 if (r < 0)
4428                                         return r;
4429                                 else if (r > 0 && ret == 0)
4430                                         ret = r;
4431                         }
4432                 }
4433         }
4434
4435         if (ellipsized && !arg_quiet)
4436                 printf("Hint: Some lines were ellipsized, use -l to show in full.\n");
4437
4438         return ret;
4439 }
4440
4441 static int cat(sd_bus *bus, char **args) {
4442         _cleanup_free_ char *unit = NULL;
4443         _cleanup_strv_free_ char **names = NULL;
4444         char **name;
4445         bool first = true;
4446         int r = 0;
4447
4448         assert(bus);
4449         assert(args);
4450
4451         r = expand_names(bus, args + 1, NULL, &names);
4452         if (r < 0)
4453                 log_error("Failed to expand names: %s", strerror(-r));
4454
4455         pager_open_if_enabled();
4456
4457         STRV_FOREACH(name, names) {
4458                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4459                 _cleanup_strv_free_ char **dropin_paths = NULL;
4460                 _cleanup_free_ char *fragment_path = NULL;
4461                 char **path;
4462
4463                 unit = unit_dbus_path_from_name(*name);
4464                 if (!unit)
4465                         return log_oom();
4466
4467                 if (need_daemon_reload(bus, *name) > 0)
4468                         log_warning("Unit file of %s changed on disk. Run 'systemctl%s daemon-reload'.",
4469                                     *name, arg_scope == UNIT_FILE_SYSTEM ? "" : " --user");
4470
4471                 r = sd_bus_get_property_string(
4472                                 bus,
4473                                 "org.freedesktop.systemd1",
4474                                 unit,
4475                                 "org.freedesktop.systemd1.Unit",
4476                                 "FragmentPath",
4477                                 &error,
4478                                 &fragment_path);
4479                 if (r < 0) {
4480                         log_warning("Failed to get FragmentPath: %s", bus_error_message(&error, r));
4481                         continue;
4482                 }
4483
4484                 r = sd_bus_get_property_strv(
4485                                 bus,
4486                                 "org.freedesktop.systemd1",
4487                                 unit,
4488                                 "org.freedesktop.systemd1.Unit",
4489                                 "DropInPaths",
4490                                 &error,
4491                                 &dropin_paths);
4492                 if (r < 0) {
4493                         log_warning("Failed to get DropInPaths: %s", bus_error_message(&error, r));
4494                         continue;
4495                 }
4496
4497                 if (first)
4498                         first = false;
4499                 else
4500                         puts("");
4501
4502                 if (!isempty(fragment_path)) {
4503                         printf("%s# %s%s\n",
4504                                ansi_highlight_blue(),
4505                                fragment_path,
4506                                ansi_highlight_off());
4507                         fflush(stdout);
4508
4509                         r = sendfile_full(STDOUT_FILENO, fragment_path);
4510                         if (r < 0) {
4511                                 log_warning("Failed to cat %s: %s", fragment_path, strerror(-r));
4512                                 continue;
4513                         }
4514                 }
4515
4516                 STRV_FOREACH(path, dropin_paths) {
4517                         printf("%s%s# %s%s\n",
4518                                isempty(fragment_path) && path == dropin_paths ? "" : "\n",
4519                                ansi_highlight_blue(),
4520                                *path,
4521                                ansi_highlight_off());
4522                         fflush(stdout);
4523
4524                         r = sendfile_full(STDOUT_FILENO, *path);
4525                         if (r < 0) {
4526                                 log_warning("Failed to cat %s: %s", *path, strerror(-r));
4527                                 continue;
4528                         }
4529                 }
4530         }
4531
4532         return r < 0 ? r : 0;
4533 }
4534
4535 static int set_property(sd_bus *bus, char **args) {
4536         _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
4537         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4538         _cleanup_free_ char *n = NULL;
4539         char **i;
4540         int r;
4541
4542         r = sd_bus_message_new_method_call(
4543                         bus,
4544                         &m,
4545                         "org.freedesktop.systemd1",
4546                         "/org/freedesktop/systemd1",
4547                         "org.freedesktop.systemd1.Manager",
4548                         "SetUnitProperties");
4549         if (r < 0)
4550                 return bus_log_create_error(r);
4551
4552         n = unit_name_mangle(args[1], MANGLE_NOGLOB);
4553         if (!n)
4554                 return log_oom();
4555
4556         r = sd_bus_message_append(m, "sb", n, arg_runtime);
4557         if (r < 0)
4558                 return bus_log_create_error(r);
4559
4560         r = sd_bus_message_open_container(m, SD_BUS_TYPE_ARRAY, "(sv)");
4561         if (r < 0)
4562                 return bus_log_create_error(r);
4563
4564         STRV_FOREACH(i, args + 2) {
4565                 r = sd_bus_message_open_container(m, SD_BUS_TYPE_STRUCT, "sv");
4566                 if (r < 0)
4567                         return bus_log_create_error(r);
4568
4569                 r = bus_append_unit_property_assignment(m, *i);
4570                 if (r < 0)
4571                         return r;
4572
4573                 r = sd_bus_message_close_container(m);
4574                 if (r < 0)
4575                         return bus_log_create_error(r);
4576         }
4577
4578         r = sd_bus_message_close_container(m);
4579         if (r < 0)
4580                 return bus_log_create_error(r);
4581
4582         r = sd_bus_call(bus, m, 0, &error, NULL);
4583         if (r < 0) {
4584                 log_error("Failed to set unit properties on %s: %s", n, bus_error_message(&error, r));
4585                 return r;
4586         }
4587
4588         return 0;
4589 }
4590
4591 static int snapshot(sd_bus *bus, char **args) {
4592         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4593         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
4594         _cleanup_free_ char *n = NULL, *id = NULL;
4595         const char *path;
4596         int r;
4597
4598         if (strv_length(args) > 1)
4599                 n = unit_name_mangle_with_suffix(args[1], MANGLE_NOGLOB, ".snapshot");
4600         else
4601                 n = strdup("");
4602         if (!n)
4603                 return log_oom();
4604
4605         r = sd_bus_call_method(
4606                         bus,
4607                         "org.freedesktop.systemd1",
4608                         "/org/freedesktop/systemd1",
4609                         "org.freedesktop.systemd1.Manager",
4610                         "CreateSnapshot",
4611                         &error,
4612                         &reply,
4613                         "sb", n, false);
4614         if (r < 0) {
4615                 log_error("Failed to create snapshot: %s", bus_error_message(&error, r));
4616                 return r;
4617         }
4618
4619         r = sd_bus_message_read(reply, "o", &path);
4620         if (r < 0)
4621                 return bus_log_parse_error(r);
4622
4623         r = sd_bus_get_property_string(
4624                         bus,
4625                         "org.freedesktop.systemd1",
4626                         path,
4627                         "org.freedesktop.systemd1.Unit",
4628                         "Id",
4629                         &error,
4630                         &id);
4631         if (r < 0) {
4632                 log_error("Failed to get ID of snapshot: %s", bus_error_message(&error, r));
4633                 return r;
4634         }
4635
4636         if (!arg_quiet)
4637                 puts(id);
4638
4639         return 0;
4640 }
4641
4642 static int delete_snapshot(sd_bus *bus, char **args) {
4643         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4644         _cleanup_strv_free_ char **names = NULL;
4645         char **name;
4646         int r, q;
4647
4648         assert(args);
4649
4650         r = expand_names(bus, args + 1, ".snapshot", &names);
4651         if (r < 0)
4652                 log_error("Failed to expand names: %s", strerror(-r));
4653
4654         STRV_FOREACH(name, names) {
4655                 q = sd_bus_call_method(
4656                                 bus,
4657                                 "org.freedesktop.systemd1",
4658                                 "/org/freedesktop/systemd1",
4659                                 "org.freedesktop.systemd1.Manager",
4660                                 "RemoveSnapshot",
4661                                 &error,
4662                                 NULL,
4663                                 "s", *name);
4664                 if (q < 0) {
4665                         log_error("Failed to remove snapshot %s: %s",
4666                                   *name, bus_error_message(&error, r));
4667                         if (r == 0)
4668                                 r = q;
4669                 }
4670         }
4671
4672         return r;
4673 }
4674
4675 static int daemon_reload(sd_bus *bus, char **args) {
4676         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4677         const char *method;
4678         int r;
4679
4680         if (arg_action == ACTION_RELOAD)
4681                 method = "Reload";
4682         else if (arg_action == ACTION_REEXEC)
4683                 method = "Reexecute";
4684         else {
4685                 assert(arg_action == ACTION_SYSTEMCTL);
4686
4687                 method =
4688                         streq(args[0], "clear-jobs")    ||
4689                         streq(args[0], "cancel")        ? "ClearJobs" :
4690                         streq(args[0], "daemon-reexec") ? "Reexecute" :
4691                         streq(args[0], "reset-failed")  ? "ResetFailed" :
4692                         streq(args[0], "halt")          ? "Halt" :
4693                         streq(args[0], "poweroff")      ? "PowerOff" :
4694                         streq(args[0], "reboot")        ? "Reboot" :
4695                         streq(args[0], "kexec")         ? "KExec" :
4696                         streq(args[0], "exit")          ? "Exit" :
4697                                     /* "daemon-reload" */ "Reload";
4698         }
4699
4700         r = sd_bus_call_method(
4701                         bus,
4702                         "org.freedesktop.systemd1",
4703                         "/org/freedesktop/systemd1",
4704                         "org.freedesktop.systemd1.Manager",
4705                         method,
4706                         &error,
4707                         NULL,
4708                         NULL);
4709
4710         if (r == -ENOENT && arg_action != ACTION_SYSTEMCTL)
4711                 /* There's always a fallback possible for
4712                  * legacy actions. */
4713                 r = -EADDRNOTAVAIL;
4714         else if ((r == -ETIMEDOUT || r == -ECONNRESET) && streq(method, "Reexecute"))
4715                 /* On reexecution, we expect a disconnect, not a
4716                  * reply */
4717                 r = 0;
4718         else if (r < 0)
4719                 log_error("Failed to execute operation: %s", bus_error_message(&error, r));
4720
4721         return r < 0 ? r : 0;
4722 }
4723
4724 static int reset_failed(sd_bus *bus, char **args) {
4725         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4726         _cleanup_strv_free_ char **names = NULL;
4727         char **name;
4728         int r, q;
4729
4730         if (strv_length(args) <= 1)
4731                 return daemon_reload(bus, args);
4732
4733         r = expand_names(bus, args + 1, NULL, &names);
4734         if (r < 0)
4735                 log_error("Failed to expand names: %s", strerror(-r));
4736
4737         STRV_FOREACH(name, names) {
4738                 q = sd_bus_call_method(
4739                                 bus,
4740                                 "org.freedesktop.systemd1",
4741                                 "/org/freedesktop/systemd1",
4742                                 "org.freedesktop.systemd1.Manager",
4743                                 "ResetFailedUnit",
4744                                 &error,
4745                                 NULL,
4746                                 "s", *name);
4747                 if (q < 0) {
4748                         log_error("Failed to reset failed state of unit %s: %s",
4749                                   *name, bus_error_message(&error, r));
4750                         if (r == 0)
4751                                 r = q;
4752                 }
4753         }
4754
4755         return r;
4756 }
4757
4758 static int show_environment(sd_bus *bus, char **args) {
4759         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4760         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
4761         const char *text;
4762         int r;
4763
4764         pager_open_if_enabled();
4765
4766         r = sd_bus_get_property(
4767                         bus,
4768                         "org.freedesktop.systemd1",
4769                         "/org/freedesktop/systemd1",
4770                         "org.freedesktop.systemd1.Manager",
4771                         "Environment",
4772                         &error,
4773                         &reply,
4774                         "as");
4775         if (r < 0) {
4776                 log_error("Failed to get environment: %s", bus_error_message(&error, r));
4777                 return r;
4778         }
4779
4780         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "s");
4781         if (r < 0)
4782                 return bus_log_parse_error(r);
4783
4784         while ((r = sd_bus_message_read_basic(reply, SD_BUS_TYPE_STRING, &text)) > 0)
4785                 puts(text);
4786         if (r < 0)
4787                 return bus_log_parse_error(r);
4788
4789         r = sd_bus_message_exit_container(reply);
4790         if (r < 0)
4791                 return bus_log_parse_error(r);
4792
4793         return 0;
4794 }
4795
4796 static int switch_root(sd_bus *bus, char **args) {
4797         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4798         _cleanup_free_ char *cmdline_init = NULL;
4799         const char *root, *init;
4800         unsigned l;
4801         int r;
4802
4803         l = strv_length(args);
4804         if (l < 2 || l > 3) {
4805                 log_error("Wrong number of arguments.");
4806                 return -EINVAL;
4807         }
4808
4809         root = args[1];
4810
4811         if (l >= 3)
4812                 init = args[2];
4813         else {
4814                 r = parse_env_file("/proc/cmdline", WHITESPACE,
4815                                    "init", &cmdline_init,
4816                                    NULL);
4817                 if (r < 0)
4818                         log_debug("Failed to parse /proc/cmdline: %s", strerror(-r));
4819
4820                 init = cmdline_init;
4821         }
4822
4823         if (isempty(init))
4824                 init = NULL;
4825
4826         if (init) {
4827                 const char *root_systemd_path = NULL, *root_init_path = NULL;
4828
4829                 root_systemd_path = strappenda(root, "/" SYSTEMD_BINARY_PATH);
4830                 root_init_path = strappenda(root, "/", init);
4831
4832                 /* If the passed init is actually the same as the
4833                  * systemd binary, then let's suppress it. */
4834                 if (files_same(root_init_path, root_systemd_path) > 0)
4835                         init = NULL;
4836         }
4837
4838         log_debug("Switching root - root: %s; init: %s", root, strna(init));
4839
4840         r = sd_bus_call_method(
4841                         bus,
4842                         "org.freedesktop.systemd1",
4843                         "/org/freedesktop/systemd1",
4844                         "org.freedesktop.systemd1.Manager",
4845                         "SwitchRoot",
4846                         &error,
4847                         NULL,
4848                         "ss", root, init);
4849         if (r < 0) {
4850                 log_error("Failed to switch root: %s", bus_error_message(&error, r));
4851                 return r;
4852         }
4853
4854         return 0;
4855 }
4856
4857 static int set_environment(sd_bus *bus, char **args) {
4858         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4859         _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
4860         const char *method;
4861         int r;
4862
4863         assert(bus);
4864         assert(args);
4865
4866         method = streq(args[0], "set-environment")
4867                 ? "SetEnvironment"
4868                 : "UnsetEnvironment";
4869
4870         r = sd_bus_message_new_method_call(
4871                         bus,
4872                         &m,
4873                         "org.freedesktop.systemd1",
4874                         "/org/freedesktop/systemd1",
4875                         "org.freedesktop.systemd1.Manager",
4876                         method);
4877         if (r < 0)
4878                 return bus_log_create_error(r);
4879
4880         r = sd_bus_message_append_strv(m, args + 1);
4881         if (r < 0)
4882                 return bus_log_create_error(r);
4883
4884         r = sd_bus_call(bus, m, 0, &error, NULL);
4885         if (r < 0) {
4886                 log_error("Failed to set environment: %s", bus_error_message(&error, r));
4887                 return r;
4888         }
4889
4890         return 0;
4891 }
4892
4893 static int import_environment(sd_bus *bus, char **args) {
4894         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4895         _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
4896         int r;
4897
4898         assert(bus);
4899         assert(args);
4900
4901         r = sd_bus_message_new_method_call(
4902                         bus,
4903                         &m,
4904                         "org.freedesktop.systemd1",
4905                         "/org/freedesktop/systemd1",
4906                         "org.freedesktop.systemd1.Manager",
4907                         "SetEnvironment");
4908         if (r < 0)
4909                 return bus_log_create_error(r);
4910
4911         if (strv_isempty(args + 1))
4912                 r = sd_bus_message_append_strv(m, environ);
4913         else {
4914                 char **a, **b;
4915
4916                 r = sd_bus_message_open_container(m, 'a', "s");
4917                 if (r < 0)
4918                         return bus_log_create_error(r);
4919
4920                 STRV_FOREACH(a, args + 1) {
4921
4922                         if (!env_name_is_valid(*a)) {
4923                                 log_error("Not a valid environment variable name: %s", *a);
4924                                 return -EINVAL;
4925                         }
4926
4927                         STRV_FOREACH(b, environ) {
4928                                 const char *eq;
4929
4930                                 eq = startswith(*b, *a);
4931                                 if (eq && *eq == '=') {
4932
4933                                         r = sd_bus_message_append(m, "s", *b);
4934                                         if (r < 0)
4935                                                 return bus_log_create_error(r);
4936
4937                                         break;
4938                                 }
4939                         }
4940                 }
4941
4942                 r = sd_bus_message_close_container(m);
4943         }
4944         if (r < 0)
4945                 return bus_log_create_error(r);
4946
4947         r = sd_bus_call(bus, m, 0, &error, NULL);
4948         if (r < 0) {
4949                 log_error("Failed to import environment: %s", bus_error_message(&error, r));
4950                 return r;
4951         }
4952
4953         return 0;
4954 }
4955
4956 static int enable_sysv_units(const char *verb, char **args) {
4957         int r = 0;
4958
4959 #if defined(HAVE_SYSV_COMPAT) && defined(HAVE_CHKCONFIG)
4960         unsigned f = 1, t = 1;
4961         _cleanup_lookup_paths_free_ LookupPaths paths = {};
4962
4963         if (arg_scope != UNIT_FILE_SYSTEM)
4964                 return 0;
4965
4966         if (!streq(verb, "enable") &&
4967             !streq(verb, "disable") &&
4968             !streq(verb, "is-enabled"))
4969                 return 0;
4970
4971         /* Processes all SysV units, and reshuffles the array so that
4972          * afterwards only the native units remain */
4973
4974         r = lookup_paths_init(&paths, SYSTEMD_SYSTEM, false, arg_root, NULL, NULL, NULL);
4975         if (r < 0)
4976                 return r;
4977
4978         r = 0;
4979         for (f = 0; args[f]; f++) {
4980                 const char *name;
4981                 _cleanup_free_ char *p = NULL, *q = NULL, *l = NULL;
4982                 bool found_native = false, found_sysv;
4983                 unsigned c = 1;
4984                 const char *argv[6] = { "/sbin/chkconfig", NULL, NULL, NULL, NULL };
4985                 char **k;
4986                 int j;
4987                 pid_t pid;
4988                 siginfo_t status;
4989
4990                 name = args[f];
4991
4992                 if (!endswith(name, ".service"))
4993                         continue;
4994
4995                 if (path_is_absolute(name))
4996                         continue;
4997
4998                 STRV_FOREACH(k, paths.unit_path) {
4999                         _cleanup_free_ char *path = NULL;
5000
5001                         path = path_join(arg_root, *k, name);
5002                         if (!path)
5003                                 return log_oom();
5004
5005                         found_native = access(path, F_OK) >= 0;
5006                         if (found_native)
5007                                 break;
5008                 }
5009
5010                 if (found_native)
5011                         continue;
5012
5013                 p = path_join(arg_root, SYSTEM_SYSVINIT_PATH, name);
5014                 if (!p)
5015                         return log_oom();
5016
5017                 p[strlen(p) - strlen(".service")] = 0;
5018                 found_sysv = access(p, F_OK) >= 0;
5019                 if (!found_sysv)
5020                         continue;
5021
5022                 /* Mark this entry, so that we don't try enabling it as native unit */
5023                 args[f] = (char*) "";
5024
5025                 log_info("%s is not a native service, redirecting to /sbin/chkconfig.", name);
5026
5027                 if (!isempty(arg_root))
5028                         argv[c++] = q = strappend("--root=", arg_root);
5029
5030                 argv[c++] = basename(p);
5031                 argv[c++] =
5032                         streq(verb, "enable") ? "on" :
5033                         streq(verb, "disable") ? "off" : "--level=5";
5034                 argv[c] = NULL;
5035
5036                 l = strv_join((char**)argv, " ");
5037                 if (!l)
5038                         return log_oom();
5039
5040                 log_info("Executing %s", l);
5041
5042                 pid = fork();
5043                 if (pid < 0) {
5044                         log_error("Failed to fork: %m");
5045                         return -errno;
5046                 } else if (pid == 0) {
5047                         /* Child */
5048
5049                         execv(argv[0], (char**) argv);
5050                         _exit(EXIT_FAILURE);
5051                 }
5052
5053                 j = wait_for_terminate(pid, &status);
5054                 if (j < 0) {
5055                         log_error("Failed to wait for child: %s", strerror(-r));
5056                         return j;
5057                 }
5058
5059                 if (status.si_code == CLD_EXITED) {
5060                         if (streq(verb, "is-enabled")) {
5061                                 if (status.si_status == 0) {
5062                                         if (!arg_quiet)
5063                                                 puts("enabled");
5064                                         r = 1;
5065                                 } else {
5066                                         if (!arg_quiet)
5067                                                 puts("disabled");
5068                                 }
5069
5070                         } else if (status.si_status != 0)
5071                                 return -EINVAL;
5072                 } else
5073                         return -EPROTO;
5074         }
5075
5076         /* Drop all SysV units */
5077         for (f = 0, t = 0; args[f]; f++) {
5078
5079                 if (isempty(args[f]))
5080                         continue;
5081
5082                 args[t++] = args[f];
5083         }
5084
5085         args[t] = NULL;
5086
5087 #endif
5088         return r;
5089 }
5090
5091 static int mangle_names(char **original_names, char ***mangled_names) {
5092         char **i, **l, **name;
5093
5094         l = new(char*, strv_length(original_names) + 1);
5095         if (!l)
5096                 return log_oom();
5097
5098         i = l;
5099         STRV_FOREACH(name, original_names) {
5100
5101                 /* When enabling units qualified path names are OK,
5102                  * too, hence allow them explicitly. */
5103
5104                 if (is_path(*name))
5105                         *i = strdup(*name);
5106                 else
5107                         *i = unit_name_mangle(*name, MANGLE_NOGLOB);
5108
5109                 if (!*i) {
5110                         strv_free(l);
5111                         return log_oom();
5112                 }
5113
5114                 i++;
5115         }
5116
5117         *i = NULL;
5118         *mangled_names = l;
5119
5120         return 0;
5121 }
5122
5123 static int enable_unit(sd_bus *bus, char **args) {
5124         _cleanup_strv_free_ char **names = NULL;
5125         const char *verb = args[0];
5126         UnitFileChange *changes = NULL;
5127         unsigned n_changes = 0;
5128         int carries_install_info = -1;
5129         int r;
5130
5131         if (!args[1])
5132                 return 0;
5133
5134         r = mangle_names(args+1, &names);
5135         if (r < 0)
5136                 return r;
5137
5138         r = enable_sysv_units(verb, names);
5139         if (r < 0)
5140                 return r;
5141
5142         /* If the operation was fully executed by the SysV compat,
5143          * let's finish early */
5144         if (strv_isempty(names))
5145                 return 0;
5146
5147         if (!bus || avoid_bus()) {
5148                 if (streq(verb, "enable")) {
5149                         r = unit_file_enable(arg_scope, arg_runtime, arg_root, names, arg_force, &changes, &n_changes);
5150                         carries_install_info = r;
5151                 } else if (streq(verb, "disable"))
5152                         r = unit_file_disable(arg_scope, arg_runtime, arg_root, names, &changes, &n_changes);
5153                 else if (streq(verb, "reenable")) {
5154                         r = unit_file_reenable(arg_scope, arg_runtime, arg_root, names, arg_force, &changes, &n_changes);
5155                         carries_install_info = r;
5156                 } else if (streq(verb, "link"))
5157                         r = unit_file_link(arg_scope, arg_runtime, arg_root, names, arg_force, &changes, &n_changes);
5158                 else if (streq(verb, "preset")) {
5159                         r = unit_file_preset(arg_scope, arg_runtime, arg_root, names, arg_preset_mode, arg_force, &changes, &n_changes);
5160                         carries_install_info = r;
5161                 } else if (streq(verb, "mask"))
5162                         r = unit_file_mask(arg_scope, arg_runtime, arg_root, names, arg_force, &changes, &n_changes);
5163                 else if (streq(verb, "unmask"))
5164                         r = unit_file_unmask(arg_scope, arg_runtime, arg_root, names, &changes, &n_changes);
5165                 else
5166                         assert_not_reached("Unknown verb");
5167
5168                 if (r < 0) {
5169                         log_error("Operation failed: %s", strerror(-r));
5170                         goto finish;
5171                 }
5172
5173                 if (!arg_quiet)
5174                         dump_unit_file_changes(changes, n_changes);
5175
5176                 r = 0;
5177         } else {
5178                 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL, *m = NULL;
5179                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
5180                 int expect_carries_install_info = false;
5181                 bool send_force = true, send_preset_mode = false;
5182                 const char *method;
5183
5184                 if (streq(verb, "enable")) {
5185                         method = "EnableUnitFiles";
5186                         expect_carries_install_info = true;
5187                 } else if (streq(verb, "disable")) {
5188                         method = "DisableUnitFiles";
5189                         send_force = false;
5190                 } else if (streq(verb, "reenable")) {
5191                         method = "ReenableUnitFiles";
5192                         expect_carries_install_info = true;
5193                 } else if (streq(verb, "link"))
5194                         method = "LinkUnitFiles";
5195                 else if (streq(verb, "preset")) {
5196
5197                         if (arg_preset_mode != UNIT_FILE_PRESET_FULL) {
5198                                 method = "PresetUnitFilesWithMode";
5199                                 send_preset_mode = true;
5200                         } else
5201                                 method = "PresetUnitFiles";
5202
5203                         expect_carries_install_info = true;
5204                 } else if (streq(verb, "mask"))
5205                         method = "MaskUnitFiles";
5206                 else if (streq(verb, "unmask")) {
5207                         method = "UnmaskUnitFiles";
5208                         send_force = false;
5209                 } else
5210                         assert_not_reached("Unknown verb");
5211
5212                 r = sd_bus_message_new_method_call(
5213                                 bus,
5214                                 &m,
5215                                 "org.freedesktop.systemd1",
5216                                 "/org/freedesktop/systemd1",
5217                                 "org.freedesktop.systemd1.Manager",
5218                                 method);
5219                 if (r < 0)
5220                         return bus_log_create_error(r);
5221
5222                 r = sd_bus_message_append_strv(m, names);
5223                 if (r < 0)
5224                         return bus_log_create_error(r);
5225
5226                 if (send_preset_mode) {
5227                         r = sd_bus_message_append(m, "s", unit_file_preset_mode_to_string(arg_preset_mode));
5228                         if (r < 0)
5229                                 return bus_log_create_error(r);
5230                 }
5231
5232                 r = sd_bus_message_append(m, "b", arg_runtime);
5233                 if (r < 0)
5234                         return bus_log_create_error(r);
5235
5236                 if (send_force) {
5237                         r = sd_bus_message_append(m, "b", arg_force);
5238                         if (r < 0)
5239                                 return bus_log_create_error(r);
5240                 }
5241
5242                 r = sd_bus_call(bus, m, 0, &error, &reply);
5243                 if (r < 0) {
5244                         log_error("Failed to execute operation: %s", bus_error_message(&error, r));
5245                         return r;
5246                 }
5247
5248                 if (expect_carries_install_info) {
5249                         r = sd_bus_message_read(reply, "b", &carries_install_info);
5250                         if (r < 0)
5251                                 return bus_log_parse_error(r);
5252                 }
5253
5254                 r = deserialize_and_dump_unit_file_changes(reply);
5255                 if (r < 0)
5256                         return r;
5257
5258                 /* Try to reload if enabled */
5259                 if (!arg_no_reload)
5260                         r = daemon_reload(bus, args);
5261                 else
5262                         r = 0;
5263         }
5264
5265         if (carries_install_info == 0)
5266                 log_warning("The unit files have no [Install] section. They are not meant to be enabled\n"
5267                             "using systemctl.\n"
5268                             "Possible reasons for having this kind of units are:\n"
5269                             "1) A unit may be statically enabled by being symlinked from another unit's\n"
5270                             "   .wants/ or .requires/ directory.\n"
5271                             "2) A unit's purpose may be to act as a helper for some other unit which has\n"
5272                             "   a requirement dependency on it.\n"
5273                             "3) A unit may be started when needed via activation (socket, path, timer,\n"
5274                             "   D-Bus, udev, scripted systemctl call, ...).\n");
5275
5276 finish:
5277         unit_file_changes_free(changes, n_changes);
5278
5279         return r;
5280 }
5281
5282 static int preset_all(sd_bus *bus, char **args) {
5283         UnitFileChange *changes = NULL;
5284         unsigned n_changes = 0;
5285         int r;
5286
5287         if (!bus || avoid_bus()) {
5288
5289                 r = unit_file_preset_all(arg_scope, arg_runtime, arg_root, arg_preset_mode, arg_force, &changes, &n_changes);
5290                 if (r < 0) {
5291                         log_error("Operation failed: %s", strerror(-r));
5292                         goto finish;
5293                 }
5294
5295                 if (!arg_quiet)
5296                         dump_unit_file_changes(changes, n_changes);
5297
5298                 r = 0;
5299
5300         } else {
5301                 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
5302                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
5303
5304                 r = sd_bus_call_method(
5305                                 bus,
5306                                 "org.freedesktop.systemd1",
5307                                 "/org/freedesktop/systemd1",
5308                                 "org.freedesktop.systemd1.Manager",
5309                                 "PresetAllUnitFiles",
5310                                 &error,
5311                                 &reply,
5312                                 "sbb",
5313                                 unit_file_preset_mode_to_string(arg_preset_mode),
5314                                 arg_runtime,
5315                                 arg_force);
5316                 if (r < 0) {
5317                         log_error("Failed to execute operation: %s", bus_error_message(&error, r));
5318                         return r;
5319                 }
5320
5321                 r = deserialize_and_dump_unit_file_changes(reply);
5322                 if (r < 0)
5323                         return r;
5324
5325                 if (!arg_no_reload)
5326                         r = daemon_reload(bus, args);
5327                 else
5328                         r = 0;
5329         }
5330
5331 finish:
5332         unit_file_changes_free(changes, n_changes);
5333
5334         return r;
5335 }
5336
5337 static int unit_is_enabled(sd_bus *bus, char **args) {
5338
5339         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
5340         _cleanup_strv_free_ char **names = NULL;
5341         bool enabled;
5342         char **name;
5343         int r;
5344
5345         r = mangle_names(args+1, &names);
5346         if (r < 0)
5347                 return r;
5348
5349         r = enable_sysv_units(args[0], names);
5350         if (r < 0)
5351                 return r;
5352
5353         enabled = r > 0;
5354
5355         if (!bus || avoid_bus()) {
5356
5357                 STRV_FOREACH(name, names) {
5358                         UnitFileState state;
5359
5360                         state = unit_file_get_state(arg_scope, arg_root, *name);
5361                         if (state < 0) {
5362                                 log_error("Failed to get unit file state for %s: %s", *name, strerror(-state));
5363                                 return state;
5364                         }
5365
5366                         if (state == UNIT_FILE_ENABLED ||
5367                             state == UNIT_FILE_ENABLED_RUNTIME ||
5368                             state == UNIT_FILE_STATIC)
5369                                 enabled = true;
5370
5371                         if (!arg_quiet)
5372                                 puts(unit_file_state_to_string(state));
5373                 }
5374
5375         } else {
5376                 STRV_FOREACH(name, names) {
5377                         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
5378                         const char *s;
5379
5380                         r = sd_bus_call_method(
5381                                         bus,
5382                                         "org.freedesktop.systemd1",
5383                                         "/org/freedesktop/systemd1",
5384                                         "org.freedesktop.systemd1.Manager",
5385                                         "GetUnitFileState",
5386                                         &error,
5387                                         &reply,
5388                                         "s", *name);
5389                         if (r < 0) {
5390                                 log_error("Failed to get unit file state for %s: %s", *name, bus_error_message(&error, r));
5391                                 return r;
5392                         }
5393
5394                         r = sd_bus_message_read(reply, "s", &s);
5395                         if (r < 0)
5396                                 return bus_log_parse_error(r);
5397
5398                         if (streq(s, "enabled") ||
5399                             streq(s, "enabled-runtime") ||
5400                             streq(s, "static"))
5401                                 enabled = true;
5402
5403                         if (!arg_quiet)
5404                                 puts(s);
5405                 }
5406         }
5407
5408         return !enabled;
5409 }
5410
5411 static int is_system_running(sd_bus *bus, char **args) {
5412         _cleanup_free_ char *state = NULL;
5413         int r;
5414
5415         r = sd_bus_get_property_string(
5416                         bus,
5417                         "org.freedesktop.systemd1",
5418                         "/org/freedesktop/systemd1",
5419                         "org.freedesktop.systemd1.Manager",
5420                         "SystemState",
5421                         NULL,
5422                         &state);
5423         if (r < 0) {
5424                 if (!arg_quiet)
5425                         puts("unknown");
5426                 return 0;
5427         }
5428
5429         if (!arg_quiet)
5430                 puts(state);
5431
5432         return streq(state, "running") ? EXIT_SUCCESS : EXIT_FAILURE;
5433 }
5434
5435 static void systemctl_help(void) {
5436
5437         pager_open_if_enabled();
5438
5439         printf("%s [OPTIONS...] {COMMAND} ...\n\n"
5440                "Query or send control commands to the systemd manager.\n\n"
5441                "  -h --help           Show this help\n"
5442                "     --version        Show package version\n"
5443                "     --system         Connect to system manager\n"
5444                "     --user           Connect to user service manager\n"
5445                "  -H --host=[USER@]HOST\n"
5446                "                      Operate on remote host\n"
5447                "  -M --machine=CONTAINER\n"
5448                "                      Operate on local container\n"
5449                "  -t --type=TYPE      List only units of a particular type\n"
5450                "     --state=STATE    List only units with particular LOAD or SUB or ACTIVE state\n"
5451                "  -p --property=NAME  Show only properties by this name\n"
5452                "  -a --all            Show all loaded units/properties, including dead/empty\n"
5453                "                      ones. To list all units installed on the system, use\n"
5454                "                      the 'list-unit-files' command instead.\n"
5455                "  -l --full           Don't ellipsize unit names on output\n"
5456                "  -r --recursive      Show unit list of host and local containers\n"
5457                "     --reverse        Show reverse dependencies with 'list-dependencies'\n"
5458                "     --job-mode=MODE  Specify how to deal with already queued jobs, when\n"
5459                "                      queueing a new job\n"
5460                "     --show-types     When showing sockets, explicitly show their type\n"
5461                "  -i --ignore-inhibitors\n"
5462                "                      When shutting down or sleeping, ignore inhibitors\n"
5463                "     --kill-who=WHO   Who to send signal to\n"
5464                "  -s --signal=SIGNAL  Which signal to send\n"
5465                "  -q --quiet          Suppress output\n"
5466                "     --no-block       Do not wait until operation finished\n"
5467                "     --no-wall        Don't send wall message before halt/power-off/reboot\n"
5468                "     --no-reload      When enabling/disabling unit files, don't reload daemon\n"
5469                "                      configuration\n"
5470                "     --no-legend      Do not print a legend (column headers and hints)\n"
5471                "     --no-pager       Do not pipe output into a pager\n"
5472                "     --no-ask-password\n"
5473                "                      Do not ask for system passwords\n"
5474                "     --global         Enable/disable unit files globally\n"
5475                "     --runtime        Enable unit files only temporarily until next reboot\n"
5476                "  -f --force          When enabling unit files, override existing symlinks\n"
5477                "                      When shutting down, execute action immediately\n"
5478                "     --preset-mode=   Specifies whether fully apply presets, or only enable,\n"
5479                "                      or only disable\n"
5480                "     --root=PATH      Enable unit files in the specified root directory\n"
5481                "  -n --lines=INTEGER  Number of journal entries to show\n"
5482                "  -o --output=STRING  Change journal output mode (short, short-monotonic,\n"
5483                "                      verbose, export, json, json-pretty, json-sse, cat)\n"
5484                "     --plain          Print unit dependencies as a list instead of a tree\n\n"
5485                "Unit Commands:\n"
5486                "  list-units [PATTERN...]         List loaded units\n"
5487                "  list-sockets [PATTERN...]       List loaded sockets ordered by address\n"
5488                "  list-timers [PATTERN...]        List loaded timers ordered by next elapse\n"
5489                "  start NAME...                   Start (activate) one or more units\n"
5490                "  stop NAME...                    Stop (deactivate) one or more units\n"
5491                "  reload NAME...                  Reload one or more units\n"
5492                "  restart NAME...                 Start or restart one or more units\n"
5493                "  try-restart NAME...             Restart one or more units if active\n"
5494                "  reload-or-restart NAME...       Reload one or more units if possible,\n"
5495                "                                  otherwise start or restart\n"
5496                "  reload-or-try-restart NAME...   Reload one or more units if possible,\n"
5497                "                                  otherwise restart if active\n"
5498                "  isolate NAME                    Start one unit and stop all others\n"
5499                "  kill NAME...                    Send signal to processes of a unit\n"
5500                "  is-active PATTERN...            Check whether units are active\n"
5501                "  is-failed PATTERN...            Check whether units are failed\n"
5502                "  status [PATTERN...|PID...]      Show runtime status of one or more units\n"
5503                "  show [PATTERN...|JOB...]        Show properties of one or more\n"
5504                "                                  units/jobs or the manager\n"
5505                "  cat PATTERN...                  Show files and drop-ins of one or more units\n"
5506                "  set-property NAME ASSIGNMENT... Sets one or more properties of a unit\n"
5507                "  help PATTERN...|PID...          Show manual for one or more units\n"
5508                "  reset-failed [PATTERN...]       Reset failed state for all, one, or more\n"
5509                "                                  units\n"
5510                "  list-dependencies [NAME]        Recursively show units which are required\n"
5511                "                                  or wanted by this unit or by which this\n"
5512                "                                  unit is required or wanted\n\n"
5513                "Unit File Commands:\n"
5514                "  list-unit-files [PATTERN...]    List installed unit files\n"
5515                "  enable NAME...                  Enable one or more unit files\n"
5516                "  disable NAME...                 Disable one or more unit files\n"
5517                "  reenable NAME...                Reenable one or more unit files\n"
5518                "  preset NAME...                  Enable/disable one or more unit files\n"
5519                "                                  based on preset configuration\n"
5520                "  preset-all                      Enable/disable all unit files based on\n"
5521                "                                  preset configuration\n"
5522                "  is-enabled NAME...              Check whether unit files are enabled\n\n"
5523                "  mask NAME...                    Mask one or more units\n"
5524                "  unmask NAME...                  Unmask one or more units\n"
5525                "  link PATH...                    Link one or more units files into\n"
5526                "                                  the search path\n"
5527                "  get-default                     Get the name of the default target\n"
5528                "  set-default NAME                Set the default target\n\n"
5529                "Machine Commands:\n"
5530                "  list-machines [PATTERN...]      List local containers and host\n\n"
5531                "Job Commands:\n"
5532                "  list-jobs [PATTERN...]          List jobs\n"
5533                "  cancel [JOB...]                 Cancel all, one, or more jobs\n\n"
5534                "Snapshot Commands:\n"
5535                "  snapshot [NAME]                 Create a snapshot\n"
5536                "  delete NAME...                  Remove one or more snapshots\n\n"
5537                "Environment Commands:\n"
5538                "  show-environment                Dump environment\n"
5539                "  set-environment NAME=VALUE...   Set one or more environment variables\n"
5540                "  unset-environment NAME...       Unset one or more environment variables\n"
5541                "  import-environment NAME...      Import all, one or more environment variables\n\n"
5542                "Manager Lifecycle Commands:\n"
5543                "  daemon-reload                   Reload systemd manager configuration\n"
5544                "  daemon-reexec                   Reexecute systemd manager\n\n"
5545                "System Commands:\n"
5546                "  is-system-running               Check whether system is fully running\n"
5547                "  default                         Enter system default mode\n"
5548                "  rescue                          Enter system rescue mode\n"
5549                "  emergency                       Enter system emergency mode\n"
5550                "  halt                            Shut down and halt the system\n"
5551                "  poweroff                        Shut down and power-off the system\n"
5552                "  reboot [ARG]                    Shut down and reboot the system\n"
5553                "  kexec                           Shut down and reboot the system with kexec\n"
5554                "  exit                            Request user instance exit\n"
5555                "  switch-root ROOT [INIT]         Change to a different root file system\n"
5556                "  suspend                         Suspend the system\n"
5557                "  hibernate                       Hibernate the system\n"
5558                "  hybrid-sleep                    Hibernate and suspend the system\n",
5559                program_invocation_short_name);
5560 }
5561
5562 static void halt_help(void) {
5563         printf("%s [OPTIONS...]%s\n\n"
5564                "%s the system.\n\n"
5565                "     --help      Show this help\n"
5566                "     --halt      Halt the machine\n"
5567                "  -p --poweroff  Switch off the machine\n"
5568                "     --reboot    Reboot the machine\n"
5569                "  -f --force     Force immediate halt/power-off/reboot\n"
5570                "  -w --wtmp-only Don't halt/power-off/reboot, just write wtmp record\n"
5571                "  -d --no-wtmp   Don't write wtmp record\n"
5572                "     --no-wall   Don't send wall message before halt/power-off/reboot\n",
5573                program_invocation_short_name,
5574                arg_action == ACTION_REBOOT   ? " [ARG]" : "",
5575                arg_action == ACTION_REBOOT   ? "Reboot" :
5576                arg_action == ACTION_POWEROFF ? "Power off" :
5577                                                "Halt");
5578 }
5579
5580 static void shutdown_help(void) {
5581         printf("%s [OPTIONS...] [TIME] [WALL...]\n\n"
5582                "Shut down the system.\n\n"
5583                "     --help      Show this help\n"
5584                "  -H --halt      Halt the machine\n"
5585                "  -P --poweroff  Power-off the machine\n"
5586                "  -r --reboot    Reboot the machine\n"
5587                "  -h             Equivalent to --poweroff, overridden by --halt\n"
5588                "  -k             Don't halt/power-off/reboot, just send warnings\n"
5589                "     --no-wall   Don't send wall message before halt/power-off/reboot\n"
5590                "  -c             Cancel a pending shutdown\n",
5591                program_invocation_short_name);
5592 }
5593
5594 static void telinit_help(void) {
5595         printf("%s [OPTIONS...] {COMMAND}\n\n"
5596                "Send control commands to the init daemon.\n\n"
5597                "     --help      Show this help\n"
5598                "     --no-wall   Don't send wall message before halt/power-off/reboot\n\n"
5599                "Commands:\n"
5600                "  0              Power-off the machine\n"
5601                "  6              Reboot the machine\n"
5602                "  2, 3, 4, 5     Start runlevelX.target unit\n"
5603                "  1, s, S        Enter rescue mode\n"
5604                "  q, Q           Reload init daemon configuration\n"
5605                "  u, U           Reexecute init daemon\n",
5606                program_invocation_short_name);
5607 }
5608
5609 static void runlevel_help(void) {
5610         printf("%s [OPTIONS...]\n\n"
5611                "Prints the previous and current runlevel of the init system.\n\n"
5612                "     --help      Show this help\n",
5613                program_invocation_short_name);
5614 }
5615
5616 static void help_types(void) {
5617         int i;
5618         const char *t;
5619
5620         if (!arg_no_legend)
5621                 puts("Available unit types:");
5622         for (i = 0; i < _UNIT_TYPE_MAX; i++) {
5623                 t = unit_type_to_string(i);
5624                 if (t)
5625                         puts(t);
5626         }
5627 }
5628
5629 static int systemctl_parse_argv(int argc, char *argv[]) {
5630
5631         enum {
5632                 ARG_FAIL = 0x100,
5633                 ARG_REVERSE,
5634                 ARG_AFTER,
5635                 ARG_BEFORE,
5636                 ARG_SHOW_TYPES,
5637                 ARG_IRREVERSIBLE,
5638                 ARG_IGNORE_DEPENDENCIES,
5639                 ARG_VERSION,
5640                 ARG_USER,
5641                 ARG_SYSTEM,
5642                 ARG_GLOBAL,
5643                 ARG_NO_BLOCK,
5644                 ARG_NO_LEGEND,
5645                 ARG_NO_PAGER,
5646                 ARG_NO_WALL,
5647                 ARG_ROOT,
5648                 ARG_NO_RELOAD,
5649                 ARG_KILL_WHO,
5650                 ARG_NO_ASK_PASSWORD,
5651                 ARG_FAILED,
5652                 ARG_RUNTIME,
5653                 ARG_FORCE,
5654                 ARG_PLAIN,
5655                 ARG_STATE,
5656                 ARG_JOB_MODE,
5657                 ARG_PRESET_MODE,
5658         };
5659
5660         static const struct option options[] = {
5661                 { "help",                no_argument,       NULL, 'h'                     },
5662                 { "version",             no_argument,       NULL, ARG_VERSION             },
5663                 { "type",                required_argument, NULL, 't'                     },
5664                 { "property",            required_argument, NULL, 'p'                     },
5665                 { "all",                 no_argument,       NULL, 'a'                     },
5666                 { "reverse",             no_argument,       NULL, ARG_REVERSE             },
5667                 { "after",               no_argument,       NULL, ARG_AFTER               },
5668                 { "before",              no_argument,       NULL, ARG_BEFORE              },
5669                 { "show-types",          no_argument,       NULL, ARG_SHOW_TYPES          },
5670                 { "failed",              no_argument,       NULL, ARG_FAILED              }, /* compatibility only */
5671                 { "full",                no_argument,       NULL, 'l'                     },
5672                 { "job-mode",            required_argument, NULL, ARG_JOB_MODE            },
5673                 { "fail",                no_argument,       NULL, ARG_FAIL                }, /* compatibility only */
5674                 { "irreversible",        no_argument,       NULL, ARG_IRREVERSIBLE        }, /* compatibility only */
5675                 { "ignore-dependencies", no_argument,       NULL, ARG_IGNORE_DEPENDENCIES }, /* compatibility only */
5676                 { "ignore-inhibitors",   no_argument,       NULL, 'i'                     },
5677                 { "user",                no_argument,       NULL, ARG_USER                },
5678                 { "system",              no_argument,       NULL, ARG_SYSTEM              },
5679                 { "global",              no_argument,       NULL, ARG_GLOBAL              },
5680                 { "no-block",            no_argument,       NULL, ARG_NO_BLOCK            },
5681                 { "no-legend",           no_argument,       NULL, ARG_NO_LEGEND           },
5682                 { "no-pager",            no_argument,       NULL, ARG_NO_PAGER            },
5683                 { "no-wall",             no_argument,       NULL, ARG_NO_WALL             },
5684                 { "quiet",               no_argument,       NULL, 'q'                     },
5685                 { "root",                required_argument, NULL, ARG_ROOT                },
5686                 { "force",               no_argument,       NULL, ARG_FORCE               },
5687                 { "no-reload",           no_argument,       NULL, ARG_NO_RELOAD           },
5688                 { "kill-who",            required_argument, NULL, ARG_KILL_WHO            },
5689                 { "signal",              required_argument, NULL, 's'                     },
5690                 { "no-ask-password",     no_argument,       NULL, ARG_NO_ASK_PASSWORD     },
5691                 { "host",                required_argument, NULL, 'H'                     },
5692                 { "machine",             required_argument, NULL, 'M'                     },
5693                 { "runtime",             no_argument,       NULL, ARG_RUNTIME             },
5694                 { "lines",               required_argument, NULL, 'n'                     },
5695                 { "output",              required_argument, NULL, 'o'                     },
5696                 { "plain",               no_argument,       NULL, ARG_PLAIN               },
5697                 { "state",               required_argument, NULL, ARG_STATE               },
5698                 { "recursive",           no_argument,       NULL, 'r'                     },
5699                 { "preset-mode",         required_argument, NULL, ARG_PRESET_MODE         },
5700                 {}
5701         };
5702
5703         int c;
5704
5705         assert(argc >= 0);
5706         assert(argv);
5707
5708         while ((c = getopt_long(argc, argv, "ht:p:alqfs:H:M:n:o:ir", options, NULL)) >= 0)
5709
5710                 switch (c) {
5711
5712                 case 'h':
5713                         systemctl_help();
5714                         return 0;
5715
5716                 case ARG_VERSION:
5717                         puts(PACKAGE_STRING);
5718                         puts(SYSTEMD_FEATURES);
5719                         return 0;
5720
5721                 case 't': {
5722                         const char *word, *state;
5723                         size_t size;
5724
5725                         FOREACH_WORD_SEPARATOR(word, size, optarg, ",", state) {
5726                                 _cleanup_free_ char *type;
5727
5728                                 type = strndup(word, size);
5729                                 if (!type)
5730                                         return -ENOMEM;
5731
5732                                 if (streq(type, "help")) {
5733                                         help_types();
5734                                         return 0;
5735                                 }
5736
5737                                 if (unit_type_from_string(type) >= 0) {
5738                                         if (strv_push(&arg_types, type))
5739                                                 return log_oom();
5740                                         type = NULL;
5741                                         continue;
5742                                 }
5743
5744                                 /* It's much nicer to use --state= for
5745                                  * load states, but let's support this
5746                                  * in --types= too for compatibility
5747                                  * with old versions */
5748                                 if (unit_load_state_from_string(optarg) >= 0) {
5749                                         if (strv_push(&arg_states, type) < 0)
5750                                                 return log_oom();
5751                                         type = NULL;
5752                                         continue;
5753                                 }
5754
5755                                 log_error("Unknown unit type or load state '%s'.", type);
5756                                 log_info("Use -t help to see a list of allowed values.");
5757                                 return -EINVAL;
5758                         }
5759
5760                         break;
5761                 }
5762
5763                 case 'p': {
5764                         /* Make sure that if the empty property list
5765                            was specified, we won't show any properties. */
5766                         if (isempty(optarg) && !arg_properties) {
5767                                 arg_properties = new0(char*, 1);
5768                                 if (!arg_properties)
5769                                         return log_oom();
5770                         } else {
5771                                 const char *word, *state;
5772                                 size_t size;
5773
5774                                 FOREACH_WORD_SEPARATOR(word, size, optarg, ",", state) {
5775                                         char *prop;
5776
5777                                         prop = strndup(word, size);
5778                                         if (!prop)
5779                                                 return log_oom();
5780
5781                                         if (strv_consume(&arg_properties, prop) < 0)
5782                                                 return log_oom();
5783                                 }
5784                         }
5785
5786                         /* If the user asked for a particular
5787                          * property, show it to him, even if it is
5788                          * empty. */
5789                         arg_all = true;
5790
5791                         break;
5792                 }
5793
5794                 case 'a':
5795                         arg_all = true;
5796                         break;
5797
5798                 case ARG_REVERSE:
5799                         arg_dependency = DEPENDENCY_REVERSE;
5800                         break;
5801
5802                 case ARG_AFTER:
5803                         arg_dependency = DEPENDENCY_AFTER;
5804                         break;
5805
5806                 case ARG_BEFORE:
5807                         arg_dependency = DEPENDENCY_BEFORE;
5808                         break;
5809
5810                 case ARG_SHOW_TYPES:
5811                         arg_show_types = true;
5812                         break;
5813
5814                 case ARG_JOB_MODE:
5815                         arg_job_mode = optarg;
5816                         break;
5817
5818                 case ARG_FAIL:
5819                         arg_job_mode = "fail";
5820                         break;
5821
5822                 case ARG_IRREVERSIBLE:
5823                         arg_job_mode = "replace-irreversibly";
5824                         break;
5825
5826                 case ARG_IGNORE_DEPENDENCIES:
5827                         arg_job_mode = "ignore-dependencies";
5828                         break;
5829
5830                 case ARG_USER:
5831                         arg_scope = UNIT_FILE_USER;
5832                         break;
5833
5834                 case ARG_SYSTEM:
5835                         arg_scope = UNIT_FILE_SYSTEM;
5836                         break;
5837
5838                 case ARG_GLOBAL:
5839                         arg_scope = UNIT_FILE_GLOBAL;
5840                         break;
5841
5842                 case ARG_NO_BLOCK:
5843                         arg_no_block = true;
5844                         break;
5845
5846                 case ARG_NO_LEGEND:
5847                         arg_no_legend = true;
5848                         break;
5849
5850                 case ARG_NO_PAGER:
5851                         arg_no_pager = true;
5852                         break;
5853
5854                 case ARG_NO_WALL:
5855                         arg_no_wall = true;
5856                         break;
5857
5858                 case ARG_ROOT:
5859                         arg_root = optarg;
5860                         break;
5861
5862                 case 'l':
5863                         arg_full = true;
5864                         break;
5865
5866                 case ARG_FAILED:
5867                         if (strv_extend(&arg_states, "failed") < 0)
5868                                 return log_oom();
5869
5870                         break;
5871
5872                 case 'q':
5873                         arg_quiet = true;
5874                         break;
5875
5876                 case ARG_FORCE:
5877                         arg_force ++;
5878                         break;
5879
5880                 case 'f':
5881                         arg_force ++;
5882                         break;
5883
5884                 case ARG_NO_RELOAD:
5885                         arg_no_reload = true;
5886                         break;
5887
5888                 case ARG_KILL_WHO:
5889                         arg_kill_who = optarg;
5890                         break;
5891
5892                 case 's':
5893                         if ((arg_signal = signal_from_string_try_harder(optarg)) < 0) {
5894                                 log_error("Failed to parse signal string %s.", optarg);
5895                                 return -EINVAL;
5896                         }
5897                         break;
5898
5899                 case ARG_NO_ASK_PASSWORD:
5900                         arg_ask_password = false;
5901                         break;
5902
5903                 case 'H':
5904                         arg_transport = BUS_TRANSPORT_REMOTE;
5905                         arg_host = optarg;
5906                         break;
5907
5908                 case 'M':
5909                         arg_transport = BUS_TRANSPORT_CONTAINER;
5910                         arg_host = optarg;
5911                         break;
5912
5913                 case ARG_RUNTIME:
5914                         arg_runtime = true;
5915                         break;
5916
5917                 case 'n':
5918                         if (safe_atou(optarg, &arg_lines) < 0) {
5919                                 log_error("Failed to parse lines '%s'", optarg);
5920                                 return -EINVAL;
5921                         }
5922                         break;
5923
5924                 case 'o':
5925                         arg_output = output_mode_from_string(optarg);
5926                         if (arg_output < 0) {
5927                                 log_error("Unknown output '%s'.", optarg);
5928                                 return -EINVAL;
5929                         }
5930                         break;
5931
5932                 case 'i':
5933                         arg_ignore_inhibitors = true;
5934                         break;
5935
5936                 case ARG_PLAIN:
5937                         arg_plain = true;
5938                         break;
5939
5940                 case ARG_STATE: {
5941                         const char *word, *state;
5942                         size_t size;
5943
5944                         FOREACH_WORD_SEPARATOR(word, size, optarg, ",", state) {
5945                                 char *s;
5946
5947                                 s = strndup(word, size);
5948                                 if (!s)
5949                                         return log_oom();
5950
5951                                 if (strv_consume(&arg_states, s) < 0)
5952                                         return log_oom();
5953                         }
5954                         break;
5955                 }
5956
5957                 case 'r':
5958                         if (geteuid() != 0) {
5959                                 log_error("--recursive requires root privileges.");
5960                                 return -EPERM;
5961                         }
5962
5963                         arg_recursive = true;
5964                         break;
5965
5966                 case ARG_PRESET_MODE:
5967
5968                         arg_preset_mode = unit_file_preset_mode_from_string(optarg);
5969                         if (arg_preset_mode < 0) {
5970                                 log_error("Failed to parse preset mode: %s.", optarg);
5971                                 return -EINVAL;
5972                         }
5973
5974                         break;
5975
5976                 case '?':
5977                         return -EINVAL;
5978
5979                 default:
5980                         assert_not_reached("Unhandled option");
5981                 }
5982
5983         if (arg_transport != BUS_TRANSPORT_LOCAL && arg_scope != UNIT_FILE_SYSTEM) {
5984                 log_error("Cannot access user instance remotely.");
5985                 return -EINVAL;
5986         }
5987
5988         return 1;
5989 }
5990
5991 static int halt_parse_argv(int argc, char *argv[]) {
5992
5993         enum {
5994                 ARG_HELP = 0x100,
5995                 ARG_HALT,
5996                 ARG_REBOOT,
5997                 ARG_NO_WALL
5998         };
5999
6000         static const struct option options[] = {
6001                 { "help",      no_argument,       NULL, ARG_HELP    },
6002                 { "halt",      no_argument,       NULL, ARG_HALT    },
6003                 { "poweroff",  no_argument,       NULL, 'p'         },
6004                 { "reboot",    no_argument,       NULL, ARG_REBOOT  },
6005                 { "force",     no_argument,       NULL, 'f'         },
6006                 { "wtmp-only", no_argument,       NULL, 'w'         },
6007                 { "no-wtmp",   no_argument,       NULL, 'd'         },
6008                 { "no-wall",   no_argument,       NULL, ARG_NO_WALL },
6009                 {}
6010         };
6011
6012         int c, r, runlevel;
6013
6014         assert(argc >= 0);
6015         assert(argv);
6016
6017         if (utmp_get_runlevel(&runlevel, NULL) >= 0)
6018                 if (runlevel == '0' || runlevel == '6')
6019                         arg_force = 2;
6020
6021         while ((c = getopt_long(argc, argv, "pfwdnih", options, NULL)) >= 0)
6022                 switch (c) {
6023
6024                 case ARG_HELP:
6025                         halt_help();
6026                         return 0;
6027
6028                 case ARG_HALT:
6029                         arg_action = ACTION_HALT;
6030                         break;
6031
6032                 case 'p':
6033                         if (arg_action != ACTION_REBOOT)
6034                                 arg_action = ACTION_POWEROFF;
6035                         break;
6036
6037                 case ARG_REBOOT:
6038                         arg_action = ACTION_REBOOT;
6039                         break;
6040
6041                 case 'f':
6042                         arg_force = 2;
6043                         break;
6044
6045                 case 'w':
6046                         arg_dry = true;
6047                         break;
6048
6049                 case 'd':
6050                         arg_no_wtmp = true;
6051                         break;
6052
6053                 case ARG_NO_WALL:
6054                         arg_no_wall = true;
6055                         break;
6056
6057                 case 'i':
6058                 case 'h':
6059                 case 'n':
6060                         /* Compatibility nops */
6061                         break;
6062
6063                 case '?':
6064                         return -EINVAL;
6065
6066                 default:
6067                         assert_not_reached("Unhandled option");
6068                 }
6069
6070         if (arg_action == ACTION_REBOOT && (argc == optind || argc == optind + 1)) {
6071                 r = update_reboot_param_file(argc == optind + 1 ? argv[optind] : NULL);
6072                 if (r < 0)
6073                         return r;
6074         } else if (optind < argc) {
6075                 log_error("Too many arguments.");
6076                 return -EINVAL;
6077         }
6078
6079         return 1;
6080 }
6081
6082 static int parse_time_spec(const char *t, usec_t *_u) {
6083         assert(t);
6084         assert(_u);
6085
6086         if (streq(t, "now"))
6087                 *_u = 0;
6088         else if (!strchr(t, ':')) {
6089                 uint64_t u;
6090
6091                 if (safe_atou64(t, &u) < 0)
6092                         return -EINVAL;
6093
6094                 *_u = now(CLOCK_REALTIME) + USEC_PER_MINUTE * u;
6095         } else {
6096                 char *e = NULL;
6097                 long hour, minute;
6098                 struct tm tm = {};
6099                 time_t s;
6100                 usec_t n;
6101
6102                 errno = 0;
6103                 hour = strtol(t, &e, 10);
6104                 if (errno > 0 || *e != ':' || hour < 0 || hour > 23)
6105                         return -EINVAL;
6106
6107                 minute = strtol(e+1, &e, 10);
6108                 if (errno > 0 || *e != 0 || minute < 0 || minute > 59)
6109                         return -EINVAL;
6110
6111                 n = now(CLOCK_REALTIME);
6112                 s = (time_t) (n / USEC_PER_SEC);
6113
6114                 assert_se(localtime_r(&s, &tm));
6115
6116                 tm.tm_hour = (int) hour;
6117                 tm.tm_min = (int) minute;
6118                 tm.tm_sec = 0;
6119
6120                 assert_se(s = mktime(&tm));
6121
6122                 *_u = (usec_t) s * USEC_PER_SEC;
6123
6124                 while (*_u <= n)
6125                         *_u += USEC_PER_DAY;
6126         }
6127
6128         return 0;
6129 }
6130
6131 static int shutdown_parse_argv(int argc, char *argv[]) {
6132
6133         enum {
6134                 ARG_HELP = 0x100,
6135                 ARG_NO_WALL
6136         };
6137
6138         static const struct option options[] = {
6139                 { "help",      no_argument,       NULL, ARG_HELP    },
6140                 { "halt",      no_argument,       NULL, 'H'         },
6141                 { "poweroff",  no_argument,       NULL, 'P'         },
6142                 { "reboot",    no_argument,       NULL, 'r'         },
6143                 { "kexec",     no_argument,       NULL, 'K'         }, /* not documented extension */
6144                 { "no-wall",   no_argument,       NULL, ARG_NO_WALL },
6145                 {}
6146         };
6147
6148         int c, r;
6149
6150         assert(argc >= 0);
6151         assert(argv);
6152
6153         while ((c = getopt_long(argc, argv, "HPrhkt:afFc", options, NULL)) >= 0)
6154                 switch (c) {
6155
6156                 case ARG_HELP:
6157                         shutdown_help();
6158                         return 0;
6159
6160                 case 'H':
6161                         arg_action = ACTION_HALT;
6162                         break;
6163
6164                 case 'P':
6165                         arg_action = ACTION_POWEROFF;
6166                         break;
6167
6168                 case 'r':
6169                         if (kexec_loaded())
6170                                 arg_action = ACTION_KEXEC;
6171                         else
6172                                 arg_action = ACTION_REBOOT;
6173                         break;
6174
6175                 case 'K':
6176                         arg_action = ACTION_KEXEC;
6177                         break;
6178
6179                 case 'h':
6180                         if (arg_action != ACTION_HALT)
6181                                 arg_action = ACTION_POWEROFF;
6182                         break;
6183
6184                 case 'k':
6185                         arg_dry = true;
6186                         break;
6187
6188                 case ARG_NO_WALL:
6189                         arg_no_wall = true;
6190                         break;
6191
6192                 case 't':
6193                 case 'a':
6194                         /* Compatibility nops */
6195                         break;
6196
6197                 case 'c':
6198                         arg_action = ACTION_CANCEL_SHUTDOWN;
6199                         break;
6200
6201                 case '?':
6202                         return -EINVAL;
6203
6204                 default:
6205                         assert_not_reached("Unhandled option");
6206                 }
6207
6208         if (argc > optind && arg_action != ACTION_CANCEL_SHUTDOWN) {
6209                 r = parse_time_spec(argv[optind], &arg_when);
6210                 if (r < 0) {
6211                         log_error("Failed to parse time specification: %s", argv[optind]);
6212                         return r;
6213                 }
6214         } else
6215                 arg_when = now(CLOCK_REALTIME) + USEC_PER_MINUTE;
6216
6217         if (argc > optind && arg_action == ACTION_CANCEL_SHUTDOWN)
6218                 /* No time argument for shutdown cancel */
6219                 arg_wall = argv + optind;
6220         else if (argc > optind + 1)
6221                 /* We skip the time argument */
6222                 arg_wall = argv + optind + 1;
6223
6224         optind = argc;
6225
6226         return 1;
6227 }
6228
6229 static int telinit_parse_argv(int argc, char *argv[]) {
6230
6231         enum {
6232                 ARG_HELP = 0x100,
6233                 ARG_NO_WALL
6234         };
6235
6236         static const struct option options[] = {
6237                 { "help",      no_argument,       NULL, ARG_HELP    },
6238                 { "no-wall",   no_argument,       NULL, ARG_NO_WALL },
6239                 {}
6240         };
6241
6242         static const struct {
6243                 char from;
6244                 enum action to;
6245         } table[] = {
6246                 { '0', ACTION_POWEROFF },
6247                 { '6', ACTION_REBOOT },
6248                 { '1', ACTION_RESCUE },
6249                 { '2', ACTION_RUNLEVEL2 },
6250                 { '3', ACTION_RUNLEVEL3 },
6251                 { '4', ACTION_RUNLEVEL4 },
6252                 { '5', ACTION_RUNLEVEL5 },
6253                 { 's', ACTION_RESCUE },
6254                 { 'S', ACTION_RESCUE },
6255                 { 'q', ACTION_RELOAD },
6256                 { 'Q', ACTION_RELOAD },
6257                 { 'u', ACTION_REEXEC },
6258                 { 'U', ACTION_REEXEC }
6259         };
6260
6261         unsigned i;
6262         int c;
6263
6264         assert(argc >= 0);
6265         assert(argv);
6266
6267         while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0)
6268                 switch (c) {
6269
6270                 case ARG_HELP:
6271                         telinit_help();
6272                         return 0;
6273
6274                 case ARG_NO_WALL:
6275                         arg_no_wall = true;
6276                         break;
6277
6278                 case '?':
6279                         return -EINVAL;
6280
6281                 default:
6282                         assert_not_reached("Unhandled option");
6283                 }
6284
6285         if (optind >= argc) {
6286                 log_error("%s: required argument missing.",
6287                           program_invocation_short_name);
6288                 return -EINVAL;
6289         }
6290
6291         if (optind + 1 < argc) {
6292                 log_error("Too many arguments.");
6293                 return -EINVAL;
6294         }
6295
6296         if (strlen(argv[optind]) != 1) {
6297                 log_error("Expected single character argument.");
6298                 return -EINVAL;
6299         }
6300
6301         for (i = 0; i < ELEMENTSOF(table); i++)
6302                 if (table[i].from == argv[optind][0])
6303                         break;
6304
6305         if (i >= ELEMENTSOF(table)) {
6306                 log_error("Unknown command '%s'.", argv[optind]);
6307                 return -EINVAL;
6308         }
6309
6310         arg_action = table[i].to;
6311
6312         optind ++;
6313
6314         return 1;
6315 }
6316
6317 static int runlevel_parse_argv(int argc, char *argv[]) {
6318
6319         enum {
6320                 ARG_HELP = 0x100,
6321         };
6322
6323         static const struct option options[] = {
6324                 { "help",      no_argument,       NULL, ARG_HELP    },
6325                 {}
6326         };
6327
6328         int c;
6329
6330         assert(argc >= 0);
6331         assert(argv);
6332
6333         while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0)
6334                 switch (c) {
6335
6336                 case ARG_HELP:
6337                         runlevel_help();
6338                         return 0;
6339
6340                 case '?':
6341                         return -EINVAL;
6342
6343                 default:
6344                         assert_not_reached("Unhandled option");
6345                 }
6346
6347         if (optind < argc) {
6348                 log_error("Too many arguments.");
6349                 return -EINVAL;
6350         }
6351
6352         return 1;
6353 }
6354
6355 static int parse_argv(int argc, char *argv[]) {
6356         assert(argc >= 0);
6357         assert(argv);
6358
6359         if (program_invocation_short_name) {
6360
6361                 if (strstr(program_invocation_short_name, "halt")) {
6362                         arg_action = ACTION_HALT;
6363                         return halt_parse_argv(argc, argv);
6364                 } else if (strstr(program_invocation_short_name, "poweroff")) {
6365                         arg_action = ACTION_POWEROFF;
6366                         return halt_parse_argv(argc, argv);
6367                 } else if (strstr(program_invocation_short_name, "reboot")) {
6368                         if (kexec_loaded())
6369                                 arg_action = ACTION_KEXEC;
6370                         else
6371                                 arg_action = ACTION_REBOOT;
6372                         return halt_parse_argv(argc, argv);
6373                 } else if (strstr(program_invocation_short_name, "shutdown")) {
6374                         arg_action = ACTION_POWEROFF;
6375                         return shutdown_parse_argv(argc, argv);
6376                 } else if (strstr(program_invocation_short_name, "init")) {
6377
6378                         if (sd_booted() > 0) {
6379                                 arg_action = _ACTION_INVALID;
6380                                 return telinit_parse_argv(argc, argv);
6381                         } else {
6382                                 /* Hmm, so some other init system is
6383                                  * running, we need to forward this
6384                                  * request to it. For now we simply
6385                                  * guess that it is Upstart. */
6386
6387                                 execv(TELINIT, argv);
6388
6389                                 log_error("Couldn't find an alternative telinit implementation to spawn.");
6390                                 return -EIO;
6391                         }
6392
6393                 } else if (strstr(program_invocation_short_name, "runlevel")) {
6394                         arg_action = ACTION_RUNLEVEL;
6395                         return runlevel_parse_argv(argc, argv);
6396                 }
6397         }
6398
6399         arg_action = ACTION_SYSTEMCTL;
6400         return systemctl_parse_argv(argc, argv);
6401 }
6402
6403 _pure_ static int action_to_runlevel(void) {
6404
6405         static const char table[_ACTION_MAX] = {
6406                 [ACTION_HALT] =      '0',
6407                 [ACTION_POWEROFF] =  '0',
6408                 [ACTION_REBOOT] =    '6',
6409                 [ACTION_RUNLEVEL2] = '2',
6410                 [ACTION_RUNLEVEL3] = '3',
6411                 [ACTION_RUNLEVEL4] = '4',
6412                 [ACTION_RUNLEVEL5] = '5',
6413                 [ACTION_RESCUE] =    '1'
6414         };
6415
6416         assert(arg_action < _ACTION_MAX);
6417
6418         return table[arg_action];
6419 }
6420
6421 static int talk_initctl(void) {
6422
6423         struct init_request request = {
6424                 .magic = INIT_MAGIC,
6425                 .sleeptime  = 0,
6426                 .cmd = INIT_CMD_RUNLVL
6427         };
6428
6429         _cleanup_close_ int fd = -1;
6430         char rl;
6431         int r;
6432
6433         rl = action_to_runlevel();
6434         if (!rl)
6435                 return 0;
6436
6437         request.runlevel = rl;
6438
6439         fd = open(INIT_FIFO, O_WRONLY|O_NDELAY|O_CLOEXEC|O_NOCTTY);
6440         if (fd < 0) {
6441                 if (errno == ENOENT)
6442                         return 0;
6443
6444                 log_error("Failed to open "INIT_FIFO": %m");
6445                 return -errno;
6446         }
6447
6448         errno = 0;
6449         r = loop_write(fd, &request, sizeof(request), false) != sizeof(request);
6450         if (r) {
6451                 log_error("Failed to write to "INIT_FIFO": %m");
6452                 return errno > 0 ? -errno : -EIO;
6453         }
6454
6455         return 1;
6456 }
6457
6458 static int systemctl_main(sd_bus *bus, int argc, char *argv[], int bus_error) {
6459
6460         static const struct {
6461                 const char* verb;
6462                 const enum {
6463                         MORE,
6464                         LESS,
6465                         EQUAL
6466                 } argc_cmp;
6467                 const int argc;
6468                 int (* const dispatch)(sd_bus *bus, char **args);
6469                 const enum {
6470                         NOBUS = 1,
6471                         FORCE,
6472                 } bus;
6473         } verbs[] = {
6474                 { "list-units",            MORE,  0, list_units        },
6475                 { "list-unit-files",       MORE,  1, list_unit_files,  NOBUS },
6476                 { "list-sockets",          MORE,  1, list_sockets      },
6477                 { "list-timers",           MORE,  1, list_timers       },
6478                 { "list-jobs",             MORE,  1, list_jobs         },
6479                 { "list-machines",         MORE,  1, list_machines     },
6480                 { "clear-jobs",            EQUAL, 1, daemon_reload     },
6481                 { "cancel",                MORE,  2, cancel_job        },
6482                 { "start",                 MORE,  2, start_unit        },
6483                 { "stop",                  MORE,  2, start_unit        },
6484                 { "condstop",              MORE,  2, start_unit        }, /* For compatibility with ALTLinux */
6485                 { "reload",                MORE,  2, start_unit        },
6486                 { "restart",               MORE,  2, start_unit        },
6487                 { "try-restart",           MORE,  2, start_unit        },
6488                 { "reload-or-restart",     MORE,  2, start_unit        },
6489                 { "reload-or-try-restart", MORE,  2, start_unit        },
6490                 { "force-reload",          MORE,  2, start_unit        }, /* For compatibility with SysV */
6491                 { "condreload",            MORE,  2, start_unit        }, /* For compatibility with ALTLinux */
6492                 { "condrestart",           MORE,  2, start_unit        }, /* For compatibility with RH */
6493                 { "isolate",               EQUAL, 2, start_unit        },
6494                 { "kill",                  MORE,  2, kill_unit         },
6495                 { "is-active",             MORE,  2, check_unit_active },
6496                 { "check",                 MORE,  2, check_unit_active },
6497                 { "is-failed",             MORE,  2, check_unit_failed },
6498                 { "show",                  MORE,  1, show              },
6499                 { "cat",                   MORE,  2, cat               },
6500                 { "status",                MORE,  1, show              },
6501                 { "help",                  MORE,  2, show              },
6502                 { "snapshot",              LESS,  2, snapshot          },
6503                 { "delete",                MORE,  2, delete_snapshot   },
6504                 { "daemon-reload",         EQUAL, 1, daemon_reload     },
6505                 { "daemon-reexec",         EQUAL, 1, daemon_reload     },
6506                 { "show-environment",      EQUAL, 1, show_environment  },
6507                 { "set-environment",       MORE,  2, set_environment   },
6508                 { "unset-environment",     MORE,  2, set_environment   },
6509                 { "import-environment",    MORE,  1, import_environment},
6510                 { "halt",                  EQUAL, 1, start_special,    FORCE },
6511                 { "poweroff",              EQUAL, 1, start_special,    FORCE },
6512                 { "reboot",                EQUAL, 1, start_special,    FORCE },
6513                 { "kexec",                 EQUAL, 1, start_special     },
6514                 { "suspend",               EQUAL, 1, start_special     },
6515                 { "hibernate",             EQUAL, 1, start_special     },
6516                 { "hybrid-sleep",          EQUAL, 1, start_special     },
6517                 { "default",               EQUAL, 1, start_special     },
6518                 { "rescue",                EQUAL, 1, start_special     },
6519                 { "emergency",             EQUAL, 1, start_special     },
6520                 { "exit",                  EQUAL, 1, start_special     },
6521                 { "reset-failed",          MORE,  1, reset_failed      },
6522                 { "enable",                MORE,  2, enable_unit,      NOBUS },
6523                 { "disable",               MORE,  2, enable_unit,      NOBUS },
6524                 { "is-enabled",            MORE,  2, unit_is_enabled,  NOBUS },
6525                 { "reenable",              MORE,  2, enable_unit,      NOBUS },
6526                 { "preset",                MORE,  2, enable_unit,      NOBUS },
6527                 { "preset-all",            EQUAL, 1, preset_all,       NOBUS },
6528                 { "mask",                  MORE,  2, enable_unit,      NOBUS },
6529                 { "unmask",                MORE,  2, enable_unit,      NOBUS },
6530                 { "link",                  MORE,  2, enable_unit,      NOBUS },
6531                 { "switch-root",           MORE,  2, switch_root       },
6532                 { "list-dependencies",     LESS,  2, list_dependencies },
6533                 { "set-default",           EQUAL, 2, set_default,      NOBUS },
6534                 { "get-default",           EQUAL, 1, get_default,      NOBUS },
6535                 { "set-property",          MORE,  3, set_property      },
6536                 { "is-system-running",     EQUAL, 1, is_system_running },
6537                 {}
6538         }, *verb = verbs;
6539
6540         int left;
6541
6542         assert(argc >= 0);
6543         assert(argv);
6544
6545         left = argc - optind;
6546
6547         /* Special rule: no arguments (left == 0) means "list-units" */
6548         if (left > 0) {
6549                 if (streq(argv[optind], "help") && !argv[optind+1]) {
6550                         log_error("This command expects one or more "
6551                                   "unit names. Did you mean --help?");
6552                         return -EINVAL;
6553                 }
6554
6555                 for (; verb->verb; verb++)
6556                         if (streq(argv[optind], verb->verb))
6557                                 goto found;
6558
6559                 log_error("Unknown operation '%s'.", argv[optind]);
6560                 return -EINVAL;
6561         }
6562 found:
6563
6564         switch (verb->argc_cmp) {
6565
6566         case EQUAL:
6567                 if (left != verb->argc) {
6568                         log_error("Invalid number of arguments.");
6569                         return -EINVAL;
6570                 }
6571
6572                 break;
6573
6574         case MORE:
6575                 if (left < verb->argc) {
6576                         log_error("Too few arguments.");
6577                         return -EINVAL;
6578                 }
6579
6580                 break;
6581
6582         case LESS:
6583                 if (left > verb->argc) {
6584                         log_error("Too many arguments.");
6585                         return -EINVAL;
6586                 }
6587
6588                 break;
6589
6590         default:
6591                 assert_not_reached("Unknown comparison operator.");
6592         }
6593
6594         /* Require a bus connection for all operations but
6595          * enable/disable */
6596         if (verb->bus == NOBUS) {
6597                 if (!bus && !avoid_bus()) {
6598                         log_error("Failed to get D-Bus connection: %s", strerror(-bus_error));
6599                         return -EIO;
6600                 }
6601
6602         } else {
6603                 if (running_in_chroot() > 0) {
6604                         log_info("Running in chroot, ignoring request.");
6605                         return 0;
6606                 }
6607
6608                 if ((verb->bus != FORCE || arg_force <= 0) && !bus) {
6609                         log_error("Failed to get D-Bus connection: %s", strerror(-bus_error));
6610                         return -EIO;
6611                 }
6612         }
6613
6614         return verb->dispatch(bus, argv + optind);
6615 }
6616
6617 static int send_shutdownd(usec_t t, char mode, bool dry_run, bool warn, const char *message) {
6618
6619         struct sd_shutdown_command c = {
6620                 .usec = t,
6621                 .mode = mode,
6622                 .dry_run = dry_run,
6623                 .warn_wall = warn,
6624         };
6625
6626         union sockaddr_union sockaddr = {
6627                 .un.sun_family = AF_UNIX,
6628                 .un.sun_path = "/run/systemd/shutdownd",
6629         };
6630
6631         struct iovec iovec[2] = {{
6632                  .iov_base = (char*) &c,
6633                  .iov_len = offsetof(struct sd_shutdown_command, wall_message),
6634         }};
6635
6636         struct msghdr msghdr = {
6637                 .msg_name = &sockaddr,
6638                 .msg_namelen = offsetof(struct sockaddr_un, sun_path)
6639                                + strlen("/run/systemd/shutdownd"),
6640                 .msg_iov = iovec,
6641                 .msg_iovlen = 1,
6642         };
6643
6644         _cleanup_close_ int fd;
6645
6646         fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0);
6647         if (fd < 0)
6648                 return -errno;
6649
6650         if (!isempty(message)) {
6651                 iovec[1].iov_base = (char*) message;
6652                 iovec[1].iov_len = strlen(message);
6653                 msghdr.msg_iovlen++;
6654         }
6655
6656         if (sendmsg(fd, &msghdr, MSG_NOSIGNAL) < 0)
6657                 return -errno;
6658
6659         return 0;
6660 }
6661
6662 static int reload_with_fallback(sd_bus *bus) {
6663
6664         if (bus) {
6665                 /* First, try systemd via D-Bus. */
6666                 if (daemon_reload(bus, NULL) >= 0)
6667                         return 0;
6668         }
6669
6670         /* Nothing else worked, so let's try signals */
6671         assert(arg_action == ACTION_RELOAD || arg_action == ACTION_REEXEC);
6672
6673         if (kill(1, arg_action == ACTION_RELOAD ? SIGHUP : SIGTERM) < 0) {
6674                 log_error("kill() failed: %m");
6675                 return -errno;
6676         }
6677
6678         return 0;
6679 }
6680
6681 static int start_with_fallback(sd_bus *bus) {
6682
6683         if (bus) {
6684                 /* First, try systemd via D-Bus. */
6685                 if (start_unit(bus, NULL) >= 0)
6686                         goto done;
6687         }
6688
6689         /* Nothing else worked, so let's try
6690          * /dev/initctl */
6691         if (talk_initctl() > 0)
6692                 goto done;
6693
6694         log_error("Failed to talk to init daemon.");
6695         return -EIO;
6696
6697 done:
6698         warn_wall(arg_action);
6699         return 0;
6700 }
6701
6702 static int halt_now(enum action a) {
6703
6704 /* Make sure C-A-D is handled by the kernel from this
6705          * point on... */
6706         reboot(RB_ENABLE_CAD);
6707
6708         switch (a) {
6709
6710         case ACTION_HALT:
6711                 log_info("Halting.");
6712                 reboot(RB_HALT_SYSTEM);
6713                 return -errno;
6714
6715         case ACTION_POWEROFF:
6716                 log_info("Powering off.");
6717                 reboot(RB_POWER_OFF);
6718                 return -errno;
6719
6720         case ACTION_REBOOT: {
6721                 _cleanup_free_ char *param = NULL;
6722
6723                 if (read_one_line_file(REBOOT_PARAM_FILE, &param) >= 0) {
6724                         log_info("Rebooting with argument '%s'.", param);
6725                         syscall(SYS_reboot, LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2,
6726                                 LINUX_REBOOT_CMD_RESTART2, param);
6727                 }
6728
6729                 log_info("Rebooting.");
6730                 reboot(RB_AUTOBOOT);
6731                 return -errno;
6732         }
6733
6734         default:
6735                 assert_not_reached("Unknown action.");
6736         }
6737 }
6738
6739 static int halt_main(sd_bus *bus) {
6740         int r;
6741
6742         r = check_inhibitors(bus, arg_action);
6743         if (r < 0)
6744                 return r;
6745
6746         if (geteuid() != 0) {
6747                 /* Try logind if we are a normal user and no special
6748                  * mode applies. Maybe PolicyKit allows us to shutdown
6749                  * the machine. */
6750
6751                 if (arg_when <= 0 &&
6752                     !arg_dry &&
6753                     arg_force <= 0 &&
6754                     (arg_action == ACTION_POWEROFF ||
6755                      arg_action == ACTION_REBOOT)) {
6756                         r = reboot_with_logind(bus, arg_action);
6757                         if (r >= 0)
6758                                 return r;
6759                 }
6760
6761                 log_error("Must be root.");
6762                 return -EPERM;
6763         }
6764
6765         if (arg_when > 0) {
6766                 _cleanup_free_ char *m;
6767
6768                 m = strv_join(arg_wall, " ");
6769                 if (!m)
6770                         return log_oom();
6771
6772                 r = send_shutdownd(arg_when,
6773                                    arg_action == ACTION_HALT     ? 'H' :
6774                                    arg_action == ACTION_POWEROFF ? 'P' :
6775                                    arg_action == ACTION_KEXEC    ? 'K' :
6776                                                                    'r',
6777                                    arg_dry,
6778                                    !arg_no_wall,
6779                                    m);
6780
6781                 if (r < 0)
6782                         log_warning("Failed to talk to shutdownd, proceeding with immediate shutdown: %s", strerror(-r));
6783                 else {
6784                         char date[FORMAT_TIMESTAMP_MAX];
6785
6786                         log_info("Shutdown scheduled for %s, use 'shutdown -c' to cancel.",
6787                                  format_timestamp(date, sizeof(date), arg_when));
6788                         return 0;
6789                 }
6790         }
6791
6792         if (!arg_dry && !arg_force)
6793                 return start_with_fallback(bus);
6794
6795         if (!arg_no_wtmp) {
6796                 if (sd_booted() > 0)
6797                         log_debug("Not writing utmp record, assuming that systemd-update-utmp is used.");
6798                 else {
6799                         r = utmp_put_shutdown();
6800                         if (r < 0)
6801                                 log_warning("Failed to write utmp record: %s", strerror(-r));
6802                 }
6803         }
6804
6805         if (arg_dry)
6806                 return 0;
6807
6808         r = halt_now(arg_action);
6809         log_error("Failed to reboot: %s", strerror(-r));
6810
6811         return r;
6812 }
6813
6814 static int runlevel_main(void) {
6815         int r, runlevel, previous;
6816
6817         r = utmp_get_runlevel(&runlevel, &previous);
6818         if (r < 0) {
6819                 puts("unknown");
6820                 return r;
6821         }
6822
6823         printf("%c %c\n",
6824                previous <= 0 ? 'N' : previous,
6825                runlevel <= 0 ? 'N' : runlevel);
6826
6827         return 0;
6828 }
6829
6830 int main(int argc, char*argv[]) {
6831         _cleanup_bus_close_unref_ sd_bus *bus = NULL;
6832         int r;
6833
6834         setlocale(LC_ALL, "");
6835         log_parse_environment();
6836         log_open();
6837
6838         /* Explicitly not on_tty() to avoid setting cached value.
6839          * This becomes relevant for piping output which might be
6840          * ellipsized. */
6841         original_stdout_is_tty = isatty(STDOUT_FILENO);
6842
6843         r = parse_argv(argc, argv);
6844         if (r <= 0)
6845                 goto finish;
6846
6847         /* /sbin/runlevel doesn't need to communicate via D-Bus, so
6848          * let's shortcut this */
6849         if (arg_action == ACTION_RUNLEVEL) {
6850                 r = runlevel_main();
6851                 goto finish;
6852         }
6853
6854         if (running_in_chroot() > 0 && arg_action != ACTION_SYSTEMCTL) {
6855                 log_info("Running in chroot, ignoring request.");
6856                 r = 0;
6857                 goto finish;
6858         }
6859
6860         if (!avoid_bus())
6861                 r = bus_open_transport_systemd(arg_transport, arg_host, arg_scope != UNIT_FILE_SYSTEM, &bus);
6862
6863         /* systemctl_main() will print an error message for the bus
6864          * connection, but only if it needs to */
6865
6866         switch (arg_action) {
6867
6868         case ACTION_SYSTEMCTL:
6869                 r = systemctl_main(bus, argc, argv, r);
6870                 break;
6871
6872         case ACTION_HALT:
6873         case ACTION_POWEROFF:
6874         case ACTION_REBOOT:
6875         case ACTION_KEXEC:
6876                 r = halt_main(bus);
6877                 break;
6878
6879         case ACTION_RUNLEVEL2:
6880         case ACTION_RUNLEVEL3:
6881         case ACTION_RUNLEVEL4:
6882         case ACTION_RUNLEVEL5:
6883         case ACTION_RESCUE:
6884         case ACTION_EMERGENCY:
6885         case ACTION_DEFAULT:
6886                 r = start_with_fallback(bus);
6887                 break;
6888
6889         case ACTION_RELOAD:
6890         case ACTION_REEXEC:
6891                 r = reload_with_fallback(bus);
6892                 break;
6893
6894         case ACTION_CANCEL_SHUTDOWN: {
6895                 _cleanup_free_ char *m = NULL;
6896
6897                 if (arg_wall) {
6898                         m = strv_join(arg_wall, " ");
6899                         if (!m) {
6900                                 r = log_oom();
6901                                 goto finish;
6902                         }
6903                 }
6904
6905                 r = send_shutdownd(arg_when, SD_SHUTDOWN_NONE, false, !arg_no_wall, m);
6906                 if (r < 0)
6907                         log_warning("Failed to talk to shutdownd, shutdown hasn't been cancelled: %s", strerror(-r));
6908                 break;
6909         }
6910
6911         case ACTION_RUNLEVEL:
6912         case _ACTION_INVALID:
6913         default:
6914                 assert_not_reached("Unknown action");
6915         }
6916
6917 finish:
6918         pager_close();
6919         ask_password_agent_close();
6920         polkit_agent_close();
6921
6922         strv_free(arg_types);
6923         strv_free(arg_states);
6924         strv_free(arg_properties);
6925
6926         return r < 0 ? EXIT_FAILURE : r;
6927 }