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_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_t) -1 && 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_t) -1 && 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                 units = new(UnitFileList, n_units);
1354                 if (!units) {
1355                         unit_file_list_free(h);
1356                         return log_oom();
1357                 }
1358
1359                 HASHMAP_FOREACH(u, h, i) {
1360                         if (!output_show_unit_file(u, strv_skip_first(args)))
1361                                 continue;
1362
1363                         units[c++] = *u;
1364                         free(u);
1365                 }
1366
1367                 assert(c <= n_units);
1368                 hashmap_free(h);
1369         } else {
1370                 r = sd_bus_call_method(
1371                                 bus,
1372                                 "org.freedesktop.systemd1",
1373                                 "/org/freedesktop/systemd1",
1374                                 "org.freedesktop.systemd1.Manager",
1375                                 "ListUnitFiles",
1376                                 &error,
1377                                 &reply,
1378                                 NULL);
1379                 if (r < 0) {
1380                         log_error("Failed to list unit files: %s", bus_error_message(&error, r));
1381                         return r;
1382                 }
1383
1384                 r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ss)");
1385                 if (r < 0)
1386                         return bus_log_parse_error(r);
1387
1388                 while ((r = sd_bus_message_read(reply, "(ss)", &path, &state)) > 0) {
1389
1390                         if (!GREEDY_REALLOC(units, size, c + 1))
1391                                 return log_oom();
1392
1393                         units[c] = (struct UnitFileList) {
1394                                 path,
1395                                 unit_file_state_from_string(state)
1396                         };
1397
1398                         if (output_show_unit_file(&units[c], strv_skip_first(args)))
1399                                 c ++;
1400
1401                 }
1402                 if (r < 0)
1403                         return bus_log_parse_error(r);
1404
1405                 r = sd_bus_message_exit_container(reply);
1406                 if (r < 0)
1407                         return bus_log_parse_error(r);
1408         }
1409
1410         if (c > 0) {
1411                 qsort(units, c, sizeof(UnitFileList), compare_unit_file_list);
1412                 output_unit_file_list(units, c);
1413         }
1414
1415         if (avoid_bus())
1416                 for (unit = units; unit < units + c; unit++)
1417                         free(unit->path);
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_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 = strappenda3(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                         if (!isempty(arg_root))
5002                                 asprintf(&path, "%s/%s/%s", arg_root, *k, name);
5003                         else
5004                                 asprintf(&path, "%s/%s", *k, name);
5005
5006                         if (!path) {
5007                                 r = log_oom();
5008                                 goto finish;
5009                         }
5010
5011                         found_native = access(path, F_OK) >= 0;
5012                         if (found_native)
5013                                 break;
5014                 }
5015
5016                 if (found_native)
5017                         continue;
5018
5019                 if (!isempty(arg_root))
5020                         asprintf(&p, "%s/" SYSTEM_SYSVINIT_PATH "/%s", arg_root, name);
5021                 else
5022                         asprintf(&p, SYSTEM_SYSVINIT_PATH "/%s", name);
5023                 if (!p) {
5024                         r = log_oom();
5025                         goto finish;
5026                 }
5027
5028                 p[strlen(p) - strlen(".service")] = 0;
5029                 found_sysv = access(p, F_OK) >= 0;
5030                 if (!found_sysv)
5031                         continue;
5032
5033                 /* Mark this entry, so that we don't try enabling it as native unit */
5034                 args[f] = (char*) "";
5035
5036                 log_info("%s is not a native service, redirecting to /sbin/chkconfig.", name);
5037
5038                 if (!isempty(arg_root))
5039                         argv[c++] = q = strappend("--root=", arg_root);
5040
5041                 argv[c++] = basename(p);
5042                 argv[c++] =
5043                         streq(verb, "enable") ? "on" :
5044                         streq(verb, "disable") ? "off" : "--level=5";
5045                 argv[c] = NULL;
5046
5047                 l = strv_join((char**)argv, " ");
5048                 if (!l) {
5049                         r = log_oom();
5050                         goto finish;
5051                 }
5052
5053                 log_info("Executing %s", l);
5054
5055                 pid = fork();
5056                 if (pid < 0) {
5057                         log_error("Failed to fork: %m");
5058                         r = -errno;
5059                         goto finish;
5060                 } else if (pid == 0) {
5061                         /* Child */
5062
5063                         execv(argv[0], (char**) argv);
5064                         _exit(EXIT_FAILURE);
5065                 }
5066
5067                 j = wait_for_terminate(pid, &status);
5068                 if (j < 0) {
5069                         log_error("Failed to wait for child: %s", strerror(-r));
5070                         r = j;
5071                         goto finish;
5072                 }
5073
5074                 if (status.si_code == CLD_EXITED) {
5075                         if (streq(verb, "is-enabled")) {
5076                                 if (status.si_status == 0) {
5077                                         if (!arg_quiet)
5078                                                 puts("enabled");
5079                                         r = 1;
5080                                 } else {
5081                                         if (!arg_quiet)
5082                                                 puts("disabled");
5083                                 }
5084
5085                         } else if (status.si_status != 0) {
5086                                 r = -EINVAL;
5087                                 goto finish;
5088                         }
5089                 } else {
5090                         r = -EPROTO;
5091                         goto finish;
5092                 }
5093         }
5094
5095 finish:
5096         /* Drop all SysV units */
5097         for (f = 0, t = 0; args[f]; f++) {
5098
5099                 if (isempty(args[f]))
5100                         continue;
5101
5102                 args[t++] = args[f];
5103         }
5104
5105         args[t] = NULL;
5106
5107 #endif
5108         return r;
5109 }
5110
5111 static int mangle_names(char **original_names, char ***mangled_names) {
5112         char **i, **l, **name;
5113
5114         l = new(char*, strv_length(original_names) + 1);
5115         if (!l)
5116                 return log_oom();
5117
5118         i = l;
5119         STRV_FOREACH(name, original_names) {
5120
5121                 /* When enabling units qualified path names are OK,
5122                  * too, hence allow them explicitly. */
5123
5124                 if (is_path(*name))
5125                         *i = strdup(*name);
5126                 else
5127                         *i = unit_name_mangle(*name, MANGLE_NOGLOB);
5128
5129                 if (!*i) {
5130                         strv_free(l);
5131                         return log_oom();
5132                 }
5133
5134                 i++;
5135         }
5136
5137         *i = NULL;
5138         *mangled_names = l;
5139
5140         return 0;
5141 }
5142
5143 static int enable_unit(sd_bus *bus, char **args) {
5144         _cleanup_strv_free_ char **names = NULL;
5145         const char *verb = args[0];
5146         UnitFileChange *changes = NULL;
5147         unsigned n_changes = 0;
5148         int carries_install_info = -1;
5149         int r;
5150
5151         if (!args[1])
5152                 return 0;
5153
5154         r = mangle_names(args+1, &names);
5155         if (r < 0)
5156                 return r;
5157
5158         r = enable_sysv_units(verb, names);
5159         if (r < 0)
5160                 return r;
5161
5162         /* If the operation was fully executed by the SysV compat,
5163          * let's finish early */
5164         if (strv_isempty(names))
5165                 return 0;
5166
5167         if (!bus || avoid_bus()) {
5168                 if (streq(verb, "enable")) {
5169                         r = unit_file_enable(arg_scope, arg_runtime, arg_root, names, arg_force, &changes, &n_changes);
5170                         carries_install_info = r;
5171                 } else if (streq(verb, "disable"))
5172                         r = unit_file_disable(arg_scope, arg_runtime, arg_root, names, &changes, &n_changes);
5173                 else if (streq(verb, "reenable")) {
5174                         r = unit_file_reenable(arg_scope, arg_runtime, arg_root, names, arg_force, &changes, &n_changes);
5175                         carries_install_info = r;
5176                 } else if (streq(verb, "link"))
5177                         r = unit_file_link(arg_scope, arg_runtime, arg_root, names, arg_force, &changes, &n_changes);
5178                 else if (streq(verb, "preset")) {
5179                         r = unit_file_preset(arg_scope, arg_runtime, arg_root, names, arg_preset_mode, arg_force, &changes, &n_changes);
5180                         carries_install_info = r;
5181                 } else if (streq(verb, "mask"))
5182                         r = unit_file_mask(arg_scope, arg_runtime, arg_root, names, arg_force, &changes, &n_changes);
5183                 else if (streq(verb, "unmask"))
5184                         r = unit_file_unmask(arg_scope, arg_runtime, arg_root, names, &changes, &n_changes);
5185                 else
5186                         assert_not_reached("Unknown verb");
5187
5188                 if (r < 0) {
5189                         log_error("Operation failed: %s", strerror(-r));
5190                         goto finish;
5191                 }
5192
5193                 if (!arg_quiet)
5194                         dump_unit_file_changes(changes, n_changes);
5195
5196                 r = 0;
5197         } else {
5198                 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL, *m = NULL;
5199                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
5200                 int expect_carries_install_info = false;
5201                 bool send_force = true, send_preset_mode = false;
5202                 const char *method;
5203
5204                 if (streq(verb, "enable")) {
5205                         method = "EnableUnitFiles";
5206                         expect_carries_install_info = true;
5207                 } else if (streq(verb, "disable")) {
5208                         method = "DisableUnitFiles";
5209                         send_force = false;
5210                 } else if (streq(verb, "reenable")) {
5211                         method = "ReenableUnitFiles";
5212                         expect_carries_install_info = true;
5213                 } else if (streq(verb, "link"))
5214                         method = "LinkUnitFiles";
5215                 else if (streq(verb, "preset")) {
5216
5217                         if (arg_preset_mode != UNIT_FILE_PRESET_FULL) {
5218                                 method = "PresetUnitFilesWithMode";
5219                                 send_preset_mode = true;
5220                         } else
5221                                 method = "PresetUnitFiles";
5222
5223                         expect_carries_install_info = true;
5224                 } else if (streq(verb, "mask"))
5225                         method = "MaskUnitFiles";
5226                 else if (streq(verb, "unmask")) {
5227                         method = "UnmaskUnitFiles";
5228                         send_force = false;
5229                 } else
5230                         assert_not_reached("Unknown verb");
5231
5232                 r = sd_bus_message_new_method_call(
5233                                 bus,
5234                                 &m,
5235                                 "org.freedesktop.systemd1",
5236                                 "/org/freedesktop/systemd1",
5237                                 "org.freedesktop.systemd1.Manager",
5238                                 method);
5239                 if (r < 0)
5240                         return bus_log_create_error(r);
5241
5242                 r = sd_bus_message_append_strv(m, names);
5243                 if (r < 0)
5244                         return bus_log_create_error(r);
5245
5246                 if (send_preset_mode) {
5247                         r = sd_bus_message_append(m, "s", unit_file_preset_mode_to_string(arg_preset_mode));
5248                         if (r < 0)
5249                                 return bus_log_create_error(r);
5250                 }
5251
5252                 r = sd_bus_message_append(m, "b", arg_runtime);
5253                 if (r < 0)
5254                         return bus_log_create_error(r);
5255
5256                 if (send_force) {
5257                         r = sd_bus_message_append(m, "b", arg_force);
5258                         if (r < 0)
5259                                 return bus_log_create_error(r);
5260                 }
5261
5262                 r = sd_bus_call(bus, m, 0, &error, &reply);
5263                 if (r < 0) {
5264                         log_error("Failed to execute operation: %s", bus_error_message(&error, r));
5265                         return r;
5266                 }
5267
5268                 if (expect_carries_install_info) {
5269                         r = sd_bus_message_read(reply, "b", &carries_install_info);
5270                         if (r < 0)
5271                                 return bus_log_parse_error(r);
5272                 }
5273
5274                 r = deserialize_and_dump_unit_file_changes(reply);
5275                 if (r < 0)
5276                         return r;
5277
5278                 /* Try to reload if enabled */
5279                 if (!arg_no_reload)
5280                         r = daemon_reload(bus, args);
5281                 else
5282                         r = 0;
5283         }
5284
5285         if (carries_install_info == 0)
5286                 log_warning("The unit files have no [Install] section. They are not meant to be enabled\n"
5287                             "using systemctl.\n"
5288                             "Possible reasons for having this kind of units are:\n"
5289                             "1) A unit may be statically enabled by being symlinked from another unit's\n"
5290                             "   .wants/ or .requires/ directory.\n"
5291                             "2) A unit's purpose may be to act as a helper for some other unit which has\n"
5292                             "   a requirement dependency on it.\n"
5293                             "3) A unit may be started when needed via activation (socket, path, timer,\n"
5294                             "   D-Bus, udev, scripted systemctl call, ...).\n");
5295
5296 finish:
5297         unit_file_changes_free(changes, n_changes);
5298
5299         return r;
5300 }
5301
5302 static int preset_all(sd_bus *bus, char **args) {
5303         UnitFileChange *changes = NULL;
5304         unsigned n_changes = 0;
5305         int r;
5306
5307         if (!bus || avoid_bus()) {
5308
5309                 r = unit_file_preset_all(arg_scope, arg_runtime, arg_root, arg_preset_mode, arg_force, &changes, &n_changes);
5310                 if (r < 0) {
5311                         log_error("Operation failed: %s", strerror(-r));
5312                         goto finish;
5313                 }
5314
5315                 if (!arg_quiet)
5316                         dump_unit_file_changes(changes, n_changes);
5317
5318                 r = 0;
5319
5320         } else {
5321                 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
5322                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
5323
5324                 r = sd_bus_call_method(
5325                                 bus,
5326                                 "org.freedesktop.systemd1",
5327                                 "/org/freedesktop/systemd1",
5328                                 "org.freedesktop.systemd1.Manager",
5329                                 "PresetAllUnitFiles",
5330                                 &error,
5331                                 &reply,
5332                                 "sbb",
5333                                 unit_file_preset_mode_to_string(arg_preset_mode),
5334                                 arg_runtime,
5335                                 arg_force);
5336                 if (r < 0) {
5337                         log_error("Failed to execute operation: %s", bus_error_message(&error, r));
5338                         return r;
5339                 }
5340
5341                 r = deserialize_and_dump_unit_file_changes(reply);
5342                 if (r < 0)
5343                         return r;
5344
5345                 if (!arg_no_reload)
5346                         r = daemon_reload(bus, args);
5347                 else
5348                         r = 0;
5349         }
5350
5351 finish:
5352         unit_file_changes_free(changes, n_changes);
5353
5354         return r;
5355 }
5356
5357 static int unit_is_enabled(sd_bus *bus, char **args) {
5358
5359         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
5360         _cleanup_strv_free_ char **names = NULL;
5361         bool enabled;
5362         char **name;
5363         int r;
5364
5365         r = mangle_names(args+1, &names);
5366         if (r < 0)
5367                 return r;
5368
5369         r = enable_sysv_units(args[0], names);
5370         if (r < 0)
5371                 return r;
5372
5373         enabled = r > 0;
5374
5375         if (!bus || avoid_bus()) {
5376
5377                 STRV_FOREACH(name, names) {
5378                         UnitFileState state;
5379
5380                         state = unit_file_get_state(arg_scope, arg_root, *name);
5381                         if (state < 0) {
5382                                 log_error("Failed to get unit file state for %s: %s", *name, strerror(-state));
5383                                 return state;
5384                         }
5385
5386                         if (state == UNIT_FILE_ENABLED ||
5387                             state == UNIT_FILE_ENABLED_RUNTIME ||
5388                             state == UNIT_FILE_STATIC)
5389                                 enabled = true;
5390
5391                         if (!arg_quiet)
5392                                 puts(unit_file_state_to_string(state));
5393                 }
5394
5395         } else {
5396                 STRV_FOREACH(name, names) {
5397                         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
5398                         const char *s;
5399
5400                         r = sd_bus_call_method(
5401                                         bus,
5402                                         "org.freedesktop.systemd1",
5403                                         "/org/freedesktop/systemd1",
5404                                         "org.freedesktop.systemd1.Manager",
5405                                         "GetUnitFileState",
5406                                         &error,
5407                                         &reply,
5408                                         "s", *name);
5409                         if (r < 0) {
5410                                 log_error("Failed to get unit file state for %s: %s", *name, bus_error_message(&error, r));
5411                                 return r;
5412                         }
5413
5414                         r = sd_bus_message_read(reply, "s", &s);
5415                         if (r < 0)
5416                                 return bus_log_parse_error(r);
5417
5418                         if (streq(s, "enabled") ||
5419                             streq(s, "enabled-runtime") ||
5420                             streq(s, "static"))
5421                                 enabled = true;
5422
5423                         if (!arg_quiet)
5424                                 puts(s);
5425                 }
5426         }
5427
5428         return !enabled;
5429 }
5430
5431 static int is_system_running(sd_bus *bus, char **args) {
5432         _cleanup_free_ char *state = NULL;
5433         int r;
5434
5435         r = sd_bus_get_property_string(
5436                         bus,
5437                         "org.freedesktop.systemd1",
5438                         "/org/freedesktop/systemd1",
5439                         "org.freedesktop.systemd1.Manager",
5440                         "SystemState",
5441                         NULL,
5442                         &state);
5443         if (r < 0) {
5444                 if (!arg_quiet)
5445                         puts("unknown");
5446                 return 0;
5447         }
5448
5449         if (!arg_quiet)
5450                 puts(state);
5451
5452         return streq(state, "running") ? EXIT_SUCCESS : EXIT_FAILURE;
5453 }
5454
5455 static int systemctl_help(void) {
5456
5457         pager_open_if_enabled();
5458
5459         printf("%s [OPTIONS...] {COMMAND} ...\n\n"
5460                "Query or send control commands to the systemd manager.\n\n"
5461                "  -h --help           Show this help\n"
5462                "     --version        Show package version\n"
5463                "     --system         Connect to system manager\n"
5464                "     --user           Connect to user service manager\n"
5465                "  -H --host=[USER@]HOST\n"
5466                "                      Operate on remote host\n"
5467                "  -M --machine=CONTAINER\n"
5468                "                      Operate on local container\n"
5469                "  -t --type=TYPE      List only units of a particular type\n"
5470                "     --state=STATE    List only units with particular LOAD or SUB or ACTIVE state\n"
5471                "  -p --property=NAME  Show only properties by this name\n"
5472                "  -a --all            Show all loaded units/properties, including dead/empty\n"
5473                "                      ones. To list all units installed on the system, use\n"
5474                "                      the 'list-unit-files' command instead.\n"
5475                "  -l --full           Don't ellipsize unit names on output\n"
5476                "  -r --recursive      Show unit list of host and local containers\n"
5477                "     --reverse        Show reverse dependencies with 'list-dependencies'\n"
5478                "     --job-mode=MODE  Specify how to deal with already queued jobs, when\n"
5479                "                      queueing a new job\n"
5480                "     --show-types     When showing sockets, explicitly show their type\n"
5481                "  -i --ignore-inhibitors\n"
5482                "                      When shutting down or sleeping, ignore inhibitors\n"
5483                "     --kill-who=WHO   Who to send signal to\n"
5484                "  -s --signal=SIGNAL  Which signal to send\n"
5485                "  -q --quiet          Suppress output\n"
5486                "     --no-block       Do not wait until operation finished\n"
5487                "     --no-wall        Don't send wall message before halt/power-off/reboot\n"
5488                "     --no-reload      When enabling/disabling unit files, don't reload daemon\n"
5489                "                      configuration\n"
5490                "     --no-legend      Do not print a legend (column headers and hints)\n"
5491                "     --no-pager       Do not pipe output into a pager\n"
5492                "     --no-ask-password\n"
5493                "                      Do not ask for system passwords\n"
5494                "     --global         Enable/disable unit files globally\n"
5495                "     --runtime        Enable unit files only temporarily until next reboot\n"
5496                "  -f --force          When enabling unit files, override existing symlinks\n"
5497                "                      When shutting down, execute action immediately\n"
5498                "     --preset-mode=   Specifies whether fully apply presets, or only enable,\n"
5499                "                      or only disable\n"
5500                "     --root=PATH      Enable unit files in the specified root directory\n"
5501                "  -n --lines=INTEGER  Number of journal entries to show\n"
5502                "  -o --output=STRING  Change journal output mode (short, short-monotonic,\n"
5503                "                      verbose, export, json, json-pretty, json-sse, cat)\n"
5504                "     --plain          Print unit dependencies as a list instead of a tree\n\n"
5505                "Unit Commands:\n"
5506                "  list-units [PATTERN...]         List loaded units\n"
5507                "  list-sockets [PATTERN...]       List loaded sockets ordered by address\n"
5508                "  list-timers [PATTERN...]        List loaded timers ordered by next elapse\n"
5509                "  start NAME...                   Start (activate) one or more units\n"
5510                "  stop NAME...                    Stop (deactivate) one or more units\n"
5511                "  reload NAME...                  Reload one or more units\n"
5512                "  restart NAME...                 Start or restart one or more units\n"
5513                "  try-restart NAME...             Restart one or more units if active\n"
5514                "  reload-or-restart NAME...       Reload one or more units if possible,\n"
5515                "                                  otherwise start or restart\n"
5516                "  reload-or-try-restart NAME...   Reload one or more units if possible,\n"
5517                "                                  otherwise restart if active\n"
5518                "  isolate NAME                    Start one unit and stop all others\n"
5519                "  kill NAME...                    Send signal to processes of a unit\n"
5520                "  is-active PATTERN...            Check whether units are active\n"
5521                "  is-failed PATTERN...            Check whether units are failed\n"
5522                "  status [PATTERN...|PID...]      Show runtime status of one or more units\n"
5523                "  show [PATTERN...|JOB...]        Show properties of one or more\n"
5524                "                                  units/jobs or the manager\n"
5525                "  cat PATTERN...                  Show files and drop-ins of one or more units\n"
5526                "  set-property NAME ASSIGNMENT... Sets one or more properties of a unit\n"
5527                "  help PATTERN...|PID...          Show manual for one or more units\n"
5528                "  reset-failed [PATTERN...]       Reset failed state for all, one, or more\n"
5529                "                                  units\n"
5530                "  list-dependencies [NAME]        Recursively show units which are required\n"
5531                "                                  or wanted by this unit or by which this\n"
5532                "                                  unit is required or wanted\n\n"
5533                "Unit File Commands:\n"
5534                "  list-unit-files [PATTERN...]    List installed unit files\n"
5535                "  enable NAME...                  Enable one or more unit files\n"
5536                "  disable NAME...                 Disable one or more unit files\n"
5537                "  reenable NAME...                Reenable one or more unit files\n"
5538                "  preset NAME...                  Enable/disable one or more unit files\n"
5539                "                                  based on preset configuration\n"
5540                "  preset-all                      Enable/disable all unit files based on\n"
5541                "                                  preset configuration\n"
5542                "  is-enabled NAME...              Check whether unit files are enabled\n\n"
5543                "  mask NAME...                    Mask one or more units\n"
5544                "  unmask NAME...                  Unmask one or more units\n"
5545                "  link PATH...                    Link one or more units files into\n"
5546                "                                  the search path\n"
5547                "  get-default                     Get the name of the default target\n"
5548                "  set-default NAME                Set the default target\n\n"
5549                "Machine Commands:\n"
5550                "  list-machines [PATTERN...]      List local containers and host\n\n"
5551                "Job Commands:\n"
5552                "  list-jobs [PATTERN...]          List jobs\n"
5553                "  cancel [JOB...]                 Cancel all, one, or more jobs\n\n"
5554                "Snapshot Commands:\n"
5555                "  snapshot [NAME]                 Create a snapshot\n"
5556                "  delete NAME...                  Remove one or more snapshots\n\n"
5557                "Environment Commands:\n"
5558                "  show-environment                Dump environment\n"
5559                "  set-environment NAME=VALUE...   Set one or more environment variables\n"
5560                "  unset-environment NAME...       Unset one or more environment variables\n"
5561                "  import-environment NAME...      Import all, one or more environment variables\n\n"
5562                "Manager Lifecycle Commands:\n"
5563                "  daemon-reload                   Reload systemd manager configuration\n"
5564                "  daemon-reexec                   Reexecute systemd manager\n\n"
5565                "System Commands:\n"
5566                "  is-system-running               Check whether system is fully running\n"
5567                "  default                         Enter system default mode\n"
5568                "  rescue                          Enter system rescue mode\n"
5569                "  emergency                       Enter system emergency mode\n"
5570                "  halt                            Shut down and halt the system\n"
5571                "  poweroff                        Shut down and power-off the system\n"
5572                "  reboot [ARG]                    Shut down and reboot the system\n"
5573                "  kexec                           Shut down and reboot the system with kexec\n"
5574                "  exit                            Request user instance exit\n"
5575                "  switch-root ROOT [INIT]         Change to a different root file system\n"
5576                "  suspend                         Suspend the system\n"
5577                "  hibernate                       Hibernate the system\n"
5578                "  hybrid-sleep                    Hibernate and suspend the system\n",
5579                program_invocation_short_name);
5580
5581         return 0;
5582 }
5583
5584 static int halt_help(void) {
5585
5586         printf("%s [OPTIONS...]%s\n\n"
5587                "%s the system.\n\n"
5588                "     --help      Show this help\n"
5589                "     --halt      Halt the machine\n"
5590                "  -p --poweroff  Switch off the machine\n"
5591                "     --reboot    Reboot the machine\n"
5592                "  -f --force     Force immediate halt/power-off/reboot\n"
5593                "  -w --wtmp-only Don't halt/power-off/reboot, just write wtmp record\n"
5594                "  -d --no-wtmp   Don't write wtmp record\n"
5595                "     --no-wall   Don't send wall message before halt/power-off/reboot\n",
5596                program_invocation_short_name,
5597                arg_action == ACTION_REBOOT   ? " [ARG]" : "",
5598                arg_action == ACTION_REBOOT   ? "Reboot" :
5599                arg_action == ACTION_POWEROFF ? "Power off" :
5600                                                "Halt");
5601
5602         return 0;
5603 }
5604
5605 static int shutdown_help(void) {
5606
5607         printf("%s [OPTIONS...] [TIME] [WALL...]\n\n"
5608                "Shut down the system.\n\n"
5609                "     --help      Show this help\n"
5610                "  -H --halt      Halt the machine\n"
5611                "  -P --poweroff  Power-off the machine\n"
5612                "  -r --reboot    Reboot the machine\n"
5613                "  -h             Equivalent to --poweroff, overridden by --halt\n"
5614                "  -k             Don't halt/power-off/reboot, just send warnings\n"
5615                "     --no-wall   Don't send wall message before halt/power-off/reboot\n"
5616                "  -c             Cancel a pending shutdown\n",
5617                program_invocation_short_name);
5618
5619         return 0;
5620 }
5621
5622 static int telinit_help(void) {
5623
5624         printf("%s [OPTIONS...] {COMMAND}\n\n"
5625                "Send control commands to the init daemon.\n\n"
5626                "     --help      Show this help\n"
5627                "     --no-wall   Don't send wall message before halt/power-off/reboot\n\n"
5628                "Commands:\n"
5629                "  0              Power-off the machine\n"
5630                "  6              Reboot the machine\n"
5631                "  2, 3, 4, 5     Start runlevelX.target unit\n"
5632                "  1, s, S        Enter rescue mode\n"
5633                "  q, Q           Reload init daemon configuration\n"
5634                "  u, U           Reexecute init daemon\n",
5635                program_invocation_short_name);
5636
5637         return 0;
5638 }
5639
5640 static int runlevel_help(void) {
5641
5642         printf("%s [OPTIONS...]\n\n"
5643                "Prints the previous and current runlevel of the init system.\n\n"
5644                "     --help      Show this help\n",
5645                program_invocation_short_name);
5646
5647         return 0;
5648 }
5649
5650 static int help_types(void) {
5651         int i;
5652         const char *t;
5653
5654         puts("Available unit types:");
5655         for (i = 0; i < _UNIT_TYPE_MAX; i++) {
5656                 t = unit_type_to_string(i);
5657                 if (t)
5658                         puts(t);
5659         }
5660
5661         return 0;
5662 }
5663
5664 static int systemctl_parse_argv(int argc, char *argv[]) {
5665
5666         enum {
5667                 ARG_FAIL = 0x100,
5668                 ARG_REVERSE,
5669                 ARG_AFTER,
5670                 ARG_BEFORE,
5671                 ARG_SHOW_TYPES,
5672                 ARG_IRREVERSIBLE,
5673                 ARG_IGNORE_DEPENDENCIES,
5674                 ARG_VERSION,
5675                 ARG_USER,
5676                 ARG_SYSTEM,
5677                 ARG_GLOBAL,
5678                 ARG_NO_BLOCK,
5679                 ARG_NO_LEGEND,
5680                 ARG_NO_PAGER,
5681                 ARG_NO_WALL,
5682                 ARG_ROOT,
5683                 ARG_NO_RELOAD,
5684                 ARG_KILL_WHO,
5685                 ARG_NO_ASK_PASSWORD,
5686                 ARG_FAILED,
5687                 ARG_RUNTIME,
5688                 ARG_FORCE,
5689                 ARG_PLAIN,
5690                 ARG_STATE,
5691                 ARG_JOB_MODE,
5692                 ARG_PRESET_MODE,
5693         };
5694
5695         static const struct option options[] = {
5696                 { "help",                no_argument,       NULL, 'h'                     },
5697                 { "version",             no_argument,       NULL, ARG_VERSION             },
5698                 { "type",                required_argument, NULL, 't'                     },
5699                 { "property",            required_argument, NULL, 'p'                     },
5700                 { "all",                 no_argument,       NULL, 'a'                     },
5701                 { "reverse",             no_argument,       NULL, ARG_REVERSE             },
5702                 { "after",               no_argument,       NULL, ARG_AFTER               },
5703                 { "before",              no_argument,       NULL, ARG_BEFORE              },
5704                 { "show-types",          no_argument,       NULL, ARG_SHOW_TYPES          },
5705                 { "failed",              no_argument,       NULL, ARG_FAILED              }, /* compatibility only */
5706                 { "full",                no_argument,       NULL, 'l'                     },
5707                 { "job-mode",            required_argument, NULL, ARG_JOB_MODE            },
5708                 { "fail",                no_argument,       NULL, ARG_FAIL                }, /* compatibility only */
5709                 { "irreversible",        no_argument,       NULL, ARG_IRREVERSIBLE        }, /* compatibility only */
5710                 { "ignore-dependencies", no_argument,       NULL, ARG_IGNORE_DEPENDENCIES }, /* compatibility only */
5711                 { "ignore-inhibitors",   no_argument,       NULL, 'i'                     },
5712                 { "user",                no_argument,       NULL, ARG_USER                },
5713                 { "system",              no_argument,       NULL, ARG_SYSTEM              },
5714                 { "global",              no_argument,       NULL, ARG_GLOBAL              },
5715                 { "no-block",            no_argument,       NULL, ARG_NO_BLOCK            },
5716                 { "no-legend",           no_argument,       NULL, ARG_NO_LEGEND           },
5717                 { "no-pager",            no_argument,       NULL, ARG_NO_PAGER            },
5718                 { "no-wall",             no_argument,       NULL, ARG_NO_WALL             },
5719                 { "quiet",               no_argument,       NULL, 'q'                     },
5720                 { "root",                required_argument, NULL, ARG_ROOT                },
5721                 { "force",               no_argument,       NULL, ARG_FORCE               },
5722                 { "no-reload",           no_argument,       NULL, ARG_NO_RELOAD           },
5723                 { "kill-who",            required_argument, NULL, ARG_KILL_WHO            },
5724                 { "signal",              required_argument, NULL, 's'                     },
5725                 { "no-ask-password",     no_argument,       NULL, ARG_NO_ASK_PASSWORD     },
5726                 { "host",                required_argument, NULL, 'H'                     },
5727                 { "machine",             required_argument, NULL, 'M'                     },
5728                 { "runtime",             no_argument,       NULL, ARG_RUNTIME             },
5729                 { "lines",               required_argument, NULL, 'n'                     },
5730                 { "output",              required_argument, NULL, 'o'                     },
5731                 { "plain",               no_argument,       NULL, ARG_PLAIN               },
5732                 { "state",               required_argument, NULL, ARG_STATE               },
5733                 { "recursive",           no_argument,       NULL, 'r'                     },
5734                 { "preset-mode",         required_argument, NULL, ARG_PRESET_MODE         },
5735                 {}
5736         };
5737
5738         int c;
5739
5740         assert(argc >= 0);
5741         assert(argv);
5742
5743         while ((c = getopt_long(argc, argv, "ht:p:alqfs:H:M:n:o:ir", options, NULL)) >= 0) {
5744
5745                 switch (c) {
5746
5747                 case 'h':
5748                         return systemctl_help();
5749
5750                 case ARG_VERSION:
5751                         puts(PACKAGE_STRING);
5752                         puts(SYSTEMD_FEATURES);
5753                         return 0;
5754
5755                 case 't': {
5756                         char *word, *state;
5757                         size_t size;
5758
5759                         FOREACH_WORD_SEPARATOR(word, size, optarg, ",", state) {
5760                                 _cleanup_free_ char *type;
5761
5762                                 type = strndup(word, size);
5763                                 if (!type)
5764                                         return -ENOMEM;
5765
5766                                 if (streq(type, "help")) {
5767                                         help_types();
5768                                         return 0;
5769                                 }
5770
5771                                 if (unit_type_from_string(type) >= 0) {
5772                                         if (strv_push(&arg_types, type))
5773                                                 return log_oom();
5774                                         type = NULL;
5775                                         continue;
5776                                 }
5777
5778                                 /* It's much nicer to use --state= for
5779                                  * load states, but let's support this
5780                                  * in --types= too for compatibility
5781                                  * with old versions */
5782                                 if (unit_load_state_from_string(optarg) >= 0) {
5783                                         if (strv_push(&arg_states, type) < 0)
5784                                                 return log_oom();
5785                                         type = NULL;
5786                                         continue;
5787                                 }
5788
5789                                 log_error("Unknown unit type or load state '%s'.", type);
5790                                 log_info("Use -t help to see a list of allowed values.");
5791                                 return -EINVAL;
5792                         }
5793
5794                         break;
5795                 }
5796
5797                 case 'p': {
5798                         /* Make sure that if the empty property list
5799                            was specified, we won't show any properties. */
5800                         if (isempty(optarg) && !arg_properties) {
5801                                 arg_properties = new0(char*, 1);
5802                                 if (!arg_properties)
5803                                         return log_oom();
5804                         } else {
5805                                 char *word, *state;
5806                                 size_t size;
5807
5808                                 FOREACH_WORD_SEPARATOR(word, size, optarg, ",", state) {
5809                                         char *prop;
5810
5811                                         prop = strndup(word, size);
5812                                         if (!prop)
5813                                                 return log_oom();
5814
5815                                         if (strv_consume(&arg_properties, prop) < 0)
5816                                                 return log_oom();
5817                                 }
5818                         }
5819
5820                         /* If the user asked for a particular
5821                          * property, show it to him, even if it is
5822                          * empty. */
5823                         arg_all = true;
5824
5825                         break;
5826                 }
5827
5828                 case 'a':
5829                         arg_all = true;
5830                         break;
5831
5832                 case ARG_REVERSE:
5833                         arg_dependency = DEPENDENCY_REVERSE;
5834                         break;
5835
5836                 case ARG_AFTER:
5837                         arg_dependency = DEPENDENCY_AFTER;
5838                         break;
5839
5840                 case ARG_BEFORE:
5841                         arg_dependency = DEPENDENCY_BEFORE;
5842                         break;
5843
5844                 case ARG_SHOW_TYPES:
5845                         arg_show_types = true;
5846                         break;
5847
5848                 case ARG_JOB_MODE:
5849                         arg_job_mode = optarg;
5850                         break;
5851
5852                 case ARG_FAIL:
5853                         arg_job_mode = "fail";
5854                         break;
5855
5856                 case ARG_IRREVERSIBLE:
5857                         arg_job_mode = "replace-irreversibly";
5858                         break;
5859
5860                 case ARG_IGNORE_DEPENDENCIES:
5861                         arg_job_mode = "ignore-dependencies";
5862                         break;
5863
5864                 case ARG_USER:
5865                         arg_scope = UNIT_FILE_USER;
5866                         break;
5867
5868                 case ARG_SYSTEM:
5869                         arg_scope = UNIT_FILE_SYSTEM;
5870                         break;
5871
5872                 case ARG_GLOBAL:
5873                         arg_scope = UNIT_FILE_GLOBAL;
5874                         break;
5875
5876                 case ARG_NO_BLOCK:
5877                         arg_no_block = true;
5878                         break;
5879
5880                 case ARG_NO_LEGEND:
5881                         arg_no_legend = true;
5882                         break;
5883
5884                 case ARG_NO_PAGER:
5885                         arg_no_pager = true;
5886                         break;
5887
5888                 case ARG_NO_WALL:
5889                         arg_no_wall = true;
5890                         break;
5891
5892                 case ARG_ROOT:
5893                         arg_root = optarg;
5894                         break;
5895
5896                 case 'l':
5897                         arg_full = true;
5898                         break;
5899
5900                 case ARG_FAILED:
5901                         if (strv_extend(&arg_states, "failed") < 0)
5902                                 return log_oom();
5903
5904                         break;
5905
5906                 case 'q':
5907                         arg_quiet = true;
5908                         break;
5909
5910                 case ARG_FORCE:
5911                         arg_force ++;
5912                         break;
5913
5914                 case 'f':
5915                         arg_force ++;
5916                         break;
5917
5918                 case ARG_NO_RELOAD:
5919                         arg_no_reload = true;
5920                         break;
5921
5922                 case ARG_KILL_WHO:
5923                         arg_kill_who = optarg;
5924                         break;
5925
5926                 case 's':
5927                         if ((arg_signal = signal_from_string_try_harder(optarg)) < 0) {
5928                                 log_error("Failed to parse signal string %s.", optarg);
5929                                 return -EINVAL;
5930                         }
5931                         break;
5932
5933                 case ARG_NO_ASK_PASSWORD:
5934                         arg_ask_password = false;
5935                         break;
5936
5937                 case 'H':
5938                         arg_transport = BUS_TRANSPORT_REMOTE;
5939                         arg_host = optarg;
5940                         break;
5941
5942                 case 'M':
5943                         arg_transport = BUS_TRANSPORT_CONTAINER;
5944                         arg_host = optarg;
5945                         break;
5946
5947                 case ARG_RUNTIME:
5948                         arg_runtime = true;
5949                         break;
5950
5951                 case 'n':
5952                         if (safe_atou(optarg, &arg_lines) < 0) {
5953                                 log_error("Failed to parse lines '%s'", optarg);
5954                                 return -EINVAL;
5955                         }
5956                         break;
5957
5958                 case 'o':
5959                         arg_output = output_mode_from_string(optarg);
5960                         if (arg_output < 0) {
5961                                 log_error("Unknown output '%s'.", optarg);
5962                                 return -EINVAL;
5963                         }
5964                         break;
5965
5966                 case 'i':
5967                         arg_ignore_inhibitors = true;
5968                         break;
5969
5970                 case ARG_PLAIN:
5971                         arg_plain = true;
5972                         break;
5973
5974                 case ARG_STATE: {
5975                         char *word, *state;
5976                         size_t size;
5977
5978                         FOREACH_WORD_SEPARATOR(word, size, optarg, ",", state) {
5979                                 char *s;
5980
5981                                 s = strndup(word, size);
5982                                 if (!s)
5983                                         return log_oom();
5984
5985                                 if (strv_consume(&arg_states, s) < 0)
5986                                         return log_oom();
5987                         }
5988                         break;
5989                 }
5990
5991                 case 'r':
5992                         if (geteuid() != 0) {
5993                                 log_error("--recursive requires root privileges.");
5994                                 return -EPERM;
5995                         }
5996
5997                         arg_recursive = true;
5998                         break;
5999
6000                 case ARG_PRESET_MODE:
6001
6002                         arg_preset_mode = unit_file_preset_mode_from_string(optarg);
6003                         if (arg_preset_mode < 0) {
6004                                 log_error("Failed to parse preset mode: %s.", optarg);
6005                                 return -EINVAL;
6006                         }
6007
6008                         break;
6009
6010                 case '?':
6011                         return -EINVAL;
6012
6013                 default:
6014                         assert_not_reached("Unhandled option");
6015                 }
6016         }
6017
6018         if (arg_transport != BUS_TRANSPORT_LOCAL && arg_scope != UNIT_FILE_SYSTEM) {
6019                 log_error("Cannot access user instance remotely.");
6020                 return -EINVAL;
6021         }
6022
6023         return 1;
6024 }
6025
6026 static int halt_parse_argv(int argc, char *argv[]) {
6027
6028         enum {
6029                 ARG_HELP = 0x100,
6030                 ARG_HALT,
6031                 ARG_REBOOT,
6032                 ARG_NO_WALL
6033         };
6034
6035         static const struct option options[] = {
6036                 { "help",      no_argument,       NULL, ARG_HELP    },
6037                 { "halt",      no_argument,       NULL, ARG_HALT    },
6038                 { "poweroff",  no_argument,       NULL, 'p'         },
6039                 { "reboot",    no_argument,       NULL, ARG_REBOOT  },
6040                 { "force",     no_argument,       NULL, 'f'         },
6041                 { "wtmp-only", no_argument,       NULL, 'w'         },
6042                 { "no-wtmp",   no_argument,       NULL, 'd'         },
6043                 { "no-wall",   no_argument,       NULL, ARG_NO_WALL },
6044                 {}
6045         };
6046
6047         int c, r, runlevel;
6048
6049         assert(argc >= 0);
6050         assert(argv);
6051
6052         if (utmp_get_runlevel(&runlevel, NULL) >= 0)
6053                 if (runlevel == '0' || runlevel == '6')
6054                         arg_force = 2;
6055
6056         while ((c = getopt_long(argc, argv, "pfwdnih", options, NULL)) >= 0) {
6057                 switch (c) {
6058
6059                 case ARG_HELP:
6060                         return halt_help();
6061
6062                 case ARG_HALT:
6063                         arg_action = ACTION_HALT;
6064                         break;
6065
6066                 case 'p':
6067                         if (arg_action != ACTION_REBOOT)
6068                                 arg_action = ACTION_POWEROFF;
6069                         break;
6070
6071                 case ARG_REBOOT:
6072                         arg_action = ACTION_REBOOT;
6073                         break;
6074
6075                 case 'f':
6076                         arg_force = 2;
6077                         break;
6078
6079                 case 'w':
6080                         arg_dry = true;
6081                         break;
6082
6083                 case 'd':
6084                         arg_no_wtmp = true;
6085                         break;
6086
6087                 case ARG_NO_WALL:
6088                         arg_no_wall = true;
6089                         break;
6090
6091                 case 'i':
6092                 case 'h':
6093                 case 'n':
6094                         /* Compatibility nops */
6095                         break;
6096
6097                 case '?':
6098                         return -EINVAL;
6099
6100                 default:
6101                         assert_not_reached("Unhandled option");
6102                 }
6103         }
6104
6105         if (arg_action == ACTION_REBOOT && (argc == optind || argc == optind + 1)) {
6106                 r = update_reboot_param_file(argc == optind + 1 ? argv[optind] : NULL);
6107                 if (r < 0)
6108                         return r;
6109         } else if (optind < argc) {
6110                 log_error("Too many arguments.");
6111                 return -EINVAL;
6112         }
6113
6114         return 1;
6115 }
6116
6117 static int parse_time_spec(const char *t, usec_t *_u) {
6118         assert(t);
6119         assert(_u);
6120
6121         if (streq(t, "now"))
6122                 *_u = 0;
6123         else if (!strchr(t, ':')) {
6124                 uint64_t u;
6125
6126                 if (safe_atou64(t, &u) < 0)
6127                         return -EINVAL;
6128
6129                 *_u = now(CLOCK_REALTIME) + USEC_PER_MINUTE * u;
6130         } else {
6131                 char *e = NULL;
6132                 long hour, minute;
6133                 struct tm tm = {};
6134                 time_t s;
6135                 usec_t n;
6136
6137                 errno = 0;
6138                 hour = strtol(t, &e, 10);
6139                 if (errno > 0 || *e != ':' || hour < 0 || hour > 23)
6140                         return -EINVAL;
6141
6142                 minute = strtol(e+1, &e, 10);
6143                 if (errno > 0 || *e != 0 || minute < 0 || minute > 59)
6144                         return -EINVAL;
6145
6146                 n = now(CLOCK_REALTIME);
6147                 s = (time_t) (n / USEC_PER_SEC);
6148
6149                 assert_se(localtime_r(&s, &tm));
6150
6151                 tm.tm_hour = (int) hour;
6152                 tm.tm_min = (int) minute;
6153                 tm.tm_sec = 0;
6154
6155                 assert_se(s = mktime(&tm));
6156
6157                 *_u = (usec_t) s * USEC_PER_SEC;
6158
6159                 while (*_u <= n)
6160                         *_u += USEC_PER_DAY;
6161         }
6162
6163         return 0;
6164 }
6165
6166 static int shutdown_parse_argv(int argc, char *argv[]) {
6167
6168         enum {
6169                 ARG_HELP = 0x100,
6170                 ARG_NO_WALL
6171         };
6172
6173         static const struct option options[] = {
6174                 { "help",      no_argument,       NULL, ARG_HELP    },
6175                 { "halt",      no_argument,       NULL, 'H'         },
6176                 { "poweroff",  no_argument,       NULL, 'P'         },
6177                 { "reboot",    no_argument,       NULL, 'r'         },
6178                 { "kexec",     no_argument,       NULL, 'K'         }, /* not documented extension */
6179                 { "no-wall",   no_argument,       NULL, ARG_NO_WALL },
6180                 {}
6181         };
6182
6183         int c, r;
6184
6185         assert(argc >= 0);
6186         assert(argv);
6187
6188         while ((c = getopt_long(argc, argv, "HPrhkt:afFc", options, NULL)) >= 0) {
6189                 switch (c) {
6190
6191                 case ARG_HELP:
6192                         return shutdown_help();
6193
6194                 case 'H':
6195                         arg_action = ACTION_HALT;
6196                         break;
6197
6198                 case 'P':
6199                         arg_action = ACTION_POWEROFF;
6200                         break;
6201
6202                 case 'r':
6203                         if (kexec_loaded())
6204                                 arg_action = ACTION_KEXEC;
6205                         else
6206                                 arg_action = ACTION_REBOOT;
6207                         break;
6208
6209                 case 'K':
6210                         arg_action = ACTION_KEXEC;
6211                         break;
6212
6213                 case 'h':
6214                         if (arg_action != ACTION_HALT)
6215                                 arg_action = ACTION_POWEROFF;
6216                         break;
6217
6218                 case 'k':
6219                         arg_dry = true;
6220                         break;
6221
6222                 case ARG_NO_WALL:
6223                         arg_no_wall = true;
6224                         break;
6225
6226                 case 't':
6227                 case 'a':
6228                         /* Compatibility nops */
6229                         break;
6230
6231                 case 'c':
6232                         arg_action = ACTION_CANCEL_SHUTDOWN;
6233                         break;
6234
6235                 case '?':
6236                         return -EINVAL;
6237
6238                 default:
6239                         assert_not_reached("Unhandled option");
6240                 }
6241         }
6242
6243         if (argc > optind && arg_action != ACTION_CANCEL_SHUTDOWN) {
6244                 r = parse_time_spec(argv[optind], &arg_when);
6245                 if (r < 0) {
6246                         log_error("Failed to parse time specification: %s", argv[optind]);
6247                         return r;
6248                 }
6249         } else
6250                 arg_when = now(CLOCK_REALTIME) + USEC_PER_MINUTE;
6251
6252         if (argc > optind && arg_action == ACTION_CANCEL_SHUTDOWN)
6253                 /* No time argument for shutdown cancel */
6254                 arg_wall = argv + optind;
6255         else if (argc > optind + 1)
6256                 /* We skip the time argument */
6257                 arg_wall = argv + optind + 1;
6258
6259         optind = argc;
6260
6261         return 1;
6262 }
6263
6264 static int telinit_parse_argv(int argc, char *argv[]) {
6265
6266         enum {
6267                 ARG_HELP = 0x100,
6268                 ARG_NO_WALL
6269         };
6270
6271         static const struct option options[] = {
6272                 { "help",      no_argument,       NULL, ARG_HELP    },
6273                 { "no-wall",   no_argument,       NULL, ARG_NO_WALL },
6274                 {}
6275         };
6276
6277         static const struct {
6278                 char from;
6279                 enum action to;
6280         } table[] = {
6281                 { '0', ACTION_POWEROFF },
6282                 { '6', ACTION_REBOOT },
6283                 { '1', ACTION_RESCUE },
6284                 { '2', ACTION_RUNLEVEL2 },
6285                 { '3', ACTION_RUNLEVEL3 },
6286                 { '4', ACTION_RUNLEVEL4 },
6287                 { '5', ACTION_RUNLEVEL5 },
6288                 { 's', ACTION_RESCUE },
6289                 { 'S', ACTION_RESCUE },
6290                 { 'q', ACTION_RELOAD },
6291                 { 'Q', ACTION_RELOAD },
6292                 { 'u', ACTION_REEXEC },
6293                 { 'U', ACTION_REEXEC }
6294         };
6295
6296         unsigned i;
6297         int c;
6298
6299         assert(argc >= 0);
6300         assert(argv);
6301
6302         while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) {
6303                 switch (c) {
6304
6305                 case ARG_HELP:
6306                         return telinit_help();
6307
6308                 case ARG_NO_WALL:
6309                         arg_no_wall = true;
6310                         break;
6311
6312                 case '?':
6313                         return -EINVAL;
6314
6315                 default:
6316                         assert_not_reached("Unhandled option");
6317                 }
6318         }
6319
6320         if (optind >= argc) {
6321                 telinit_help();
6322                 return -EINVAL;
6323         }
6324
6325         if (optind + 1 < argc) {
6326                 log_error("Too many arguments.");
6327                 return -EINVAL;
6328         }
6329
6330         if (strlen(argv[optind]) != 1) {
6331                 log_error("Expected single character argument.");
6332                 return -EINVAL;
6333         }
6334
6335         for (i = 0; i < ELEMENTSOF(table); i++)
6336                 if (table[i].from == argv[optind][0])
6337                         break;
6338
6339         if (i >= ELEMENTSOF(table)) {
6340                 log_error("Unknown command '%s'.", argv[optind]);
6341                 return -EINVAL;
6342         }
6343
6344         arg_action = table[i].to;
6345
6346         optind ++;
6347
6348         return 1;
6349 }
6350
6351 static int runlevel_parse_argv(int argc, char *argv[]) {
6352
6353         enum {
6354                 ARG_HELP = 0x100,
6355         };
6356
6357         static const struct option options[] = {
6358                 { "help",      no_argument,       NULL, ARG_HELP    },
6359                 {}
6360         };
6361
6362         int c;
6363
6364         assert(argc >= 0);
6365         assert(argv);
6366
6367         while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) {
6368                 switch (c) {
6369
6370                 case ARG_HELP:
6371                         return runlevel_help();
6372
6373                 case '?':
6374                         return -EINVAL;
6375
6376                 default:
6377                         assert_not_reached("Unhandled option");
6378                 }
6379         }
6380
6381         if (optind < argc) {
6382                 log_error("Too many arguments.");
6383                 return -EINVAL;
6384         }
6385
6386         return 1;
6387 }
6388
6389 static int parse_argv(int argc, char *argv[]) {
6390         assert(argc >= 0);
6391         assert(argv);
6392
6393         if (program_invocation_short_name) {
6394
6395                 if (strstr(program_invocation_short_name, "halt")) {
6396                         arg_action = ACTION_HALT;
6397                         return halt_parse_argv(argc, argv);
6398                 } else if (strstr(program_invocation_short_name, "poweroff")) {
6399                         arg_action = ACTION_POWEROFF;
6400                         return halt_parse_argv(argc, argv);
6401                 } else if (strstr(program_invocation_short_name, "reboot")) {
6402                         if (kexec_loaded())
6403                                 arg_action = ACTION_KEXEC;
6404                         else
6405                                 arg_action = ACTION_REBOOT;
6406                         return halt_parse_argv(argc, argv);
6407                 } else if (strstr(program_invocation_short_name, "shutdown")) {
6408                         arg_action = ACTION_POWEROFF;
6409                         return shutdown_parse_argv(argc, argv);
6410                 } else if (strstr(program_invocation_short_name, "init")) {
6411
6412                         if (sd_booted() > 0) {
6413                                 arg_action = _ACTION_INVALID;
6414                                 return telinit_parse_argv(argc, argv);
6415                         } else {
6416                                 /* Hmm, so some other init system is
6417                                  * running, we need to forward this
6418                                  * request to it. For now we simply
6419                                  * guess that it is Upstart. */
6420
6421                                 execv(TELINIT, argv);
6422
6423                                 log_error("Couldn't find an alternative telinit implementation to spawn.");
6424                                 return -EIO;
6425                         }
6426
6427                 } else if (strstr(program_invocation_short_name, "runlevel")) {
6428                         arg_action = ACTION_RUNLEVEL;
6429                         return runlevel_parse_argv(argc, argv);
6430                 }
6431         }
6432
6433         arg_action = ACTION_SYSTEMCTL;
6434         return systemctl_parse_argv(argc, argv);
6435 }
6436
6437 _pure_ static int action_to_runlevel(void) {
6438
6439         static const char table[_ACTION_MAX] = {
6440                 [ACTION_HALT] =      '0',
6441                 [ACTION_POWEROFF] =  '0',
6442                 [ACTION_REBOOT] =    '6',
6443                 [ACTION_RUNLEVEL2] = '2',
6444                 [ACTION_RUNLEVEL3] = '3',
6445                 [ACTION_RUNLEVEL4] = '4',
6446                 [ACTION_RUNLEVEL5] = '5',
6447                 [ACTION_RESCUE] =    '1'
6448         };
6449
6450         assert(arg_action < _ACTION_MAX);
6451
6452         return table[arg_action];
6453 }
6454
6455 static int talk_initctl(void) {
6456
6457         struct init_request request = {
6458                 .magic = INIT_MAGIC,
6459                 .sleeptime  = 0,
6460                 .cmd = INIT_CMD_RUNLVL
6461         };
6462
6463         _cleanup_close_ int fd = -1;
6464         char rl;
6465         int r;
6466
6467         rl = action_to_runlevel();
6468         if (!rl)
6469                 return 0;
6470
6471         request.runlevel = rl;
6472
6473         fd = open(INIT_FIFO, O_WRONLY|O_NDELAY|O_CLOEXEC|O_NOCTTY);
6474         if (fd < 0) {
6475                 if (errno == ENOENT)
6476                         return 0;
6477
6478                 log_error("Failed to open "INIT_FIFO": %m");
6479                 return -errno;
6480         }
6481
6482         errno = 0;
6483         r = loop_write(fd, &request, sizeof(request), false) != sizeof(request);
6484         if (r) {
6485                 log_error("Failed to write to "INIT_FIFO": %m");
6486                 return errno > 0 ? -errno : -EIO;
6487         }
6488
6489         return 1;
6490 }
6491
6492 static int systemctl_main(sd_bus *bus, int argc, char *argv[], int bus_error) {
6493
6494         static const struct {
6495                 const char* verb;
6496                 const enum {
6497                         MORE,
6498                         LESS,
6499                         EQUAL
6500                 } argc_cmp;
6501                 const int argc;
6502                 int (* const dispatch)(sd_bus *bus, char **args);
6503                 const enum {
6504                         NOBUS = 1,
6505                         FORCE,
6506                 } bus;
6507         } verbs[] = {
6508                 { "list-units",            MORE,  0, list_units        },
6509                 { "list-unit-files",       MORE,  1, list_unit_files,  NOBUS },
6510                 { "list-sockets",          MORE,  1, list_sockets      },
6511                 { "list-timers",           MORE,  1, list_timers       },
6512                 { "list-jobs",             MORE,  1, list_jobs         },
6513                 { "list-machines",         MORE,  1, list_machines     },
6514                 { "clear-jobs",            EQUAL, 1, daemon_reload     },
6515                 { "cancel",                MORE,  2, cancel_job        },
6516                 { "start",                 MORE,  2, start_unit        },
6517                 { "stop",                  MORE,  2, start_unit        },
6518                 { "condstop",              MORE,  2, start_unit        }, /* For compatibility with ALTLinux */
6519                 { "reload",                MORE,  2, start_unit        },
6520                 { "restart",               MORE,  2, start_unit        },
6521                 { "try-restart",           MORE,  2, start_unit        },
6522                 { "reload-or-restart",     MORE,  2, start_unit        },
6523                 { "reload-or-try-restart", MORE,  2, start_unit        },
6524                 { "force-reload",          MORE,  2, start_unit        }, /* For compatibility with SysV */
6525                 { "condreload",            MORE,  2, start_unit        }, /* For compatibility with ALTLinux */
6526                 { "condrestart",           MORE,  2, start_unit        }, /* For compatibility with RH */
6527                 { "isolate",               EQUAL, 2, start_unit        },
6528                 { "kill",                  MORE,  2, kill_unit         },
6529                 { "is-active",             MORE,  2, check_unit_active },
6530                 { "check",                 MORE,  2, check_unit_active },
6531                 { "is-failed",             MORE,  2, check_unit_failed },
6532                 { "show",                  MORE,  1, show              },
6533                 { "cat",                   MORE,  2, cat               },
6534                 { "status",                MORE,  1, show              },
6535                 { "help",                  MORE,  2, show              },
6536                 { "snapshot",              LESS,  2, snapshot          },
6537                 { "delete",                MORE,  2, delete_snapshot   },
6538                 { "daemon-reload",         EQUAL, 1, daemon_reload     },
6539                 { "daemon-reexec",         EQUAL, 1, daemon_reload     },
6540                 { "show-environment",      EQUAL, 1, show_environment  },
6541                 { "set-environment",       MORE,  2, set_environment   },
6542                 { "unset-environment",     MORE,  2, set_environment   },
6543                 { "import-environment",    MORE,  1, import_environment},
6544                 { "halt",                  EQUAL, 1, start_special,    FORCE },
6545                 { "poweroff",              EQUAL, 1, start_special,    FORCE },
6546                 { "reboot",                EQUAL, 1, start_special,    FORCE },
6547                 { "kexec",                 EQUAL, 1, start_special     },
6548                 { "suspend",               EQUAL, 1, start_special     },
6549                 { "hibernate",             EQUAL, 1, start_special     },
6550                 { "hybrid-sleep",          EQUAL, 1, start_special     },
6551                 { "default",               EQUAL, 1, start_special     },
6552                 { "rescue",                EQUAL, 1, start_special     },
6553                 { "emergency",             EQUAL, 1, start_special     },
6554                 { "exit",                  EQUAL, 1, start_special     },
6555                 { "reset-failed",          MORE,  1, reset_failed      },
6556                 { "enable",                MORE,  2, enable_unit,      NOBUS },
6557                 { "disable",               MORE,  2, enable_unit,      NOBUS },
6558                 { "is-enabled",            MORE,  2, unit_is_enabled,  NOBUS },
6559                 { "reenable",              MORE,  2, enable_unit,      NOBUS },
6560                 { "preset",                MORE,  2, enable_unit,      NOBUS },
6561                 { "preset-all",            EQUAL, 1, preset_all,       NOBUS },
6562                 { "mask",                  MORE,  2, enable_unit,      NOBUS },
6563                 { "unmask",                MORE,  2, enable_unit,      NOBUS },
6564                 { "link",                  MORE,  2, enable_unit,      NOBUS },
6565                 { "switch-root",           MORE,  2, switch_root       },
6566                 { "list-dependencies",     LESS,  2, list_dependencies },
6567                 { "set-default",           EQUAL, 2, set_default,      NOBUS },
6568                 { "get-default",           EQUAL, 1, get_default,      NOBUS },
6569                 { "set-property",          MORE,  3, set_property      },
6570                 { "is-system-running",     EQUAL, 1, is_system_running },
6571                 {}
6572         }, *verb = verbs;
6573
6574         int left;
6575
6576         assert(argc >= 0);
6577         assert(argv);
6578
6579         left = argc - optind;
6580
6581         /* Special rule: no arguments (left == 0) means "list-units" */
6582         if (left > 0) {
6583                 if (streq(argv[optind], "help") && !argv[optind+1]) {
6584                         log_error("This command expects one or more "
6585                                   "unit names. Did you mean --help?");
6586                         return -EINVAL;
6587                 }
6588
6589                 for (; verb->verb; verb++)
6590                         if (streq(argv[optind], verb->verb))
6591                                 goto found;
6592
6593                 log_error("Unknown operation '%s'.", argv[optind]);
6594                 return -EINVAL;
6595         }
6596 found:
6597
6598         switch (verb->argc_cmp) {
6599
6600         case EQUAL:
6601                 if (left != verb->argc) {
6602                         log_error("Invalid number of arguments.");
6603                         return -EINVAL;
6604                 }
6605
6606                 break;
6607
6608         case MORE:
6609                 if (left < verb->argc) {
6610                         log_error("Too few arguments.");
6611                         return -EINVAL;
6612                 }
6613
6614                 break;
6615
6616         case LESS:
6617                 if (left > verb->argc) {
6618                         log_error("Too many arguments.");
6619                         return -EINVAL;
6620                 }
6621
6622                 break;
6623
6624         default:
6625                 assert_not_reached("Unknown comparison operator.");
6626         }
6627
6628         /* Require a bus connection for all operations but
6629          * enable/disable */
6630         if (verb->bus == NOBUS) {
6631                 if (!bus && !avoid_bus()) {
6632                         log_error("Failed to get D-Bus connection: %s", strerror(-bus_error));
6633                         return -EIO;
6634                 }
6635
6636         } else {
6637                 if (running_in_chroot() > 0) {
6638                         log_info("Running in chroot, ignoring request.");
6639                         return 0;
6640                 }
6641
6642                 if ((verb->bus != FORCE || arg_force <= 0) && !bus) {
6643                         log_error("Failed to get D-Bus connection: %s", strerror(-bus_error));
6644                         return -EIO;
6645                 }
6646         }
6647
6648         return verb->dispatch(bus, argv + optind);
6649 }
6650
6651 static int send_shutdownd(usec_t t, char mode, bool dry_run, bool warn, const char *message) {
6652
6653         struct sd_shutdown_command c = {
6654                 .usec = t,
6655                 .mode = mode,
6656                 .dry_run = dry_run,
6657                 .warn_wall = warn,
6658         };
6659
6660         union sockaddr_union sockaddr = {
6661                 .un.sun_family = AF_UNIX,
6662                 .un.sun_path = "/run/systemd/shutdownd",
6663         };
6664
6665         struct iovec iovec[2] = {{
6666                  .iov_base = (char*) &c,
6667                  .iov_len = offsetof(struct sd_shutdown_command, wall_message),
6668         }};
6669
6670         struct msghdr msghdr = {
6671                 .msg_name = &sockaddr,
6672                 .msg_namelen = offsetof(struct sockaddr_un, sun_path)
6673                                + strlen("/run/systemd/shutdownd"),
6674                 .msg_iov = iovec,
6675                 .msg_iovlen = 1,
6676         };
6677
6678         _cleanup_close_ int fd;
6679
6680         fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0);
6681         if (fd < 0)
6682                 return -errno;
6683
6684         if (!isempty(message)) {
6685                 iovec[1].iov_base = (char*) message;
6686                 iovec[1].iov_len = strlen(message);
6687                 msghdr.msg_iovlen++;
6688         }
6689
6690         if (sendmsg(fd, &msghdr, MSG_NOSIGNAL) < 0)
6691                 return -errno;
6692
6693         return 0;
6694 }
6695
6696 static int reload_with_fallback(sd_bus *bus) {
6697
6698         if (bus) {
6699                 /* First, try systemd via D-Bus. */
6700                 if (daemon_reload(bus, NULL) >= 0)
6701                         return 0;
6702         }
6703
6704         /* Nothing else worked, so let's try signals */
6705         assert(arg_action == ACTION_RELOAD || arg_action == ACTION_REEXEC);
6706
6707         if (kill(1, arg_action == ACTION_RELOAD ? SIGHUP : SIGTERM) < 0) {
6708                 log_error("kill() failed: %m");
6709                 return -errno;
6710         }
6711
6712         return 0;
6713 }
6714
6715 static int start_with_fallback(sd_bus *bus) {
6716
6717         if (bus) {
6718                 /* First, try systemd via D-Bus. */
6719                 if (start_unit(bus, NULL) >= 0)
6720                         goto done;
6721         }
6722
6723         /* Nothing else worked, so let's try
6724          * /dev/initctl */
6725         if (talk_initctl() > 0)
6726                 goto done;
6727
6728         log_error("Failed to talk to init daemon.");
6729         return -EIO;
6730
6731 done:
6732         warn_wall(arg_action);
6733         return 0;
6734 }
6735
6736 static int halt_now(enum action a) {
6737
6738 /* Make sure C-A-D is handled by the kernel from this
6739          * point on... */
6740         reboot(RB_ENABLE_CAD);
6741
6742         switch (a) {
6743
6744         case ACTION_HALT:
6745                 log_info("Halting.");
6746                 reboot(RB_HALT_SYSTEM);
6747                 return -errno;
6748
6749         case ACTION_POWEROFF:
6750                 log_info("Powering off.");
6751                 reboot(RB_POWER_OFF);
6752                 return -errno;
6753
6754         case ACTION_REBOOT: {
6755                 _cleanup_free_ char *param = NULL;
6756
6757                 if (read_one_line_file(REBOOT_PARAM_FILE, &param) >= 0) {
6758                         log_info("Rebooting with argument '%s'.", param);
6759                         syscall(SYS_reboot, LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2,
6760                                 LINUX_REBOOT_CMD_RESTART2, param);
6761                 }
6762
6763                 log_info("Rebooting.");
6764                 reboot(RB_AUTOBOOT);
6765                 return -errno;
6766         }
6767
6768         default:
6769                 assert_not_reached("Unknown action.");
6770         }
6771 }
6772
6773 static int halt_main(sd_bus *bus) {
6774         int r;
6775
6776         r = check_inhibitors(bus, arg_action);
6777         if (r < 0)
6778                 return r;
6779
6780         if (geteuid() != 0) {
6781                 /* Try logind if we are a normal user and no special
6782                  * mode applies. Maybe PolicyKit allows us to shutdown
6783                  * the machine. */
6784
6785                 if (arg_when <= 0 &&
6786                     !arg_dry &&
6787                     arg_force <= 0 &&
6788                     (arg_action == ACTION_POWEROFF ||
6789                      arg_action == ACTION_REBOOT)) {
6790                         r = reboot_with_logind(bus, arg_action);
6791                         if (r >= 0)
6792                                 return r;
6793                 }
6794
6795                 log_error("Must be root.");
6796                 return -EPERM;
6797         }
6798
6799         if (arg_when > 0) {
6800                 _cleanup_free_ char *m;
6801
6802                 m = strv_join(arg_wall, " ");
6803                 if (!m)
6804                         return log_oom();
6805
6806                 r = send_shutdownd(arg_when,
6807                                    arg_action == ACTION_HALT     ? 'H' :
6808                                    arg_action == ACTION_POWEROFF ? 'P' :
6809                                    arg_action == ACTION_KEXEC    ? 'K' :
6810                                                                    'r',
6811                                    arg_dry,
6812                                    !arg_no_wall,
6813                                    m);
6814
6815                 if (r < 0)
6816                         log_warning("Failed to talk to shutdownd, proceeding with immediate shutdown: %s", strerror(-r));
6817                 else {
6818                         char date[FORMAT_TIMESTAMP_MAX];
6819
6820                         log_info("Shutdown scheduled for %s, use 'shutdown -c' to cancel.",
6821                                  format_timestamp(date, sizeof(date), arg_when));
6822                         return 0;
6823                 }
6824         }
6825
6826         if (!arg_dry && !arg_force)
6827                 return start_with_fallback(bus);
6828
6829         if (!arg_no_wtmp) {
6830                 if (sd_booted() > 0)
6831                         log_debug("Not writing utmp record, assuming that systemd-update-utmp is used.");
6832                 else {
6833                         r = utmp_put_shutdown();
6834                         if (r < 0)
6835                                 log_warning("Failed to write utmp record: %s", strerror(-r));
6836                 }
6837         }
6838
6839         if (arg_dry)
6840                 return 0;
6841
6842         r = halt_now(arg_action);
6843         log_error("Failed to reboot: %s", strerror(-r));
6844
6845         return r;
6846 }
6847
6848 static int runlevel_main(void) {
6849         int r, runlevel, previous;
6850
6851         r = utmp_get_runlevel(&runlevel, &previous);
6852         if (r < 0) {
6853                 puts("unknown");
6854                 return r;
6855         }
6856
6857         printf("%c %c\n",
6858                previous <= 0 ? 'N' : previous,
6859                runlevel <= 0 ? 'N' : runlevel);
6860
6861         return 0;
6862 }
6863
6864 int main(int argc, char*argv[]) {
6865         _cleanup_bus_unref_ sd_bus *bus = NULL;
6866         int r;
6867
6868         setlocale(LC_ALL, "");
6869         log_parse_environment();
6870         log_open();
6871
6872         /* Explicitly not on_tty() to avoid setting cached value.
6873          * This becomes relevant for piping output which might be
6874          * ellipsized. */
6875         original_stdout_is_tty = isatty(STDOUT_FILENO);
6876
6877         r = parse_argv(argc, argv);
6878         if (r <= 0)
6879                 goto finish;
6880
6881         /* /sbin/runlevel doesn't need to communicate via D-Bus, so
6882          * let's shortcut this */
6883         if (arg_action == ACTION_RUNLEVEL) {
6884                 r = runlevel_main();
6885                 goto finish;
6886         }
6887
6888         if (running_in_chroot() > 0 && arg_action != ACTION_SYSTEMCTL) {
6889                 log_info("Running in chroot, ignoring request.");
6890                 r = 0;
6891                 goto finish;
6892         }
6893
6894         if (!avoid_bus())
6895                 r = bus_open_transport_systemd(arg_transport, arg_host, arg_scope != UNIT_FILE_SYSTEM, &bus);
6896
6897         /* systemctl_main() will print an error message for the bus
6898          * connection, but only if it needs to */
6899
6900         switch (arg_action) {
6901
6902         case ACTION_SYSTEMCTL:
6903                 r = systemctl_main(bus, argc, argv, r);
6904                 break;
6905
6906         case ACTION_HALT:
6907         case ACTION_POWEROFF:
6908         case ACTION_REBOOT:
6909         case ACTION_KEXEC:
6910                 r = halt_main(bus);
6911                 break;
6912
6913         case ACTION_RUNLEVEL2:
6914         case ACTION_RUNLEVEL3:
6915         case ACTION_RUNLEVEL4:
6916         case ACTION_RUNLEVEL5:
6917         case ACTION_RESCUE:
6918         case ACTION_EMERGENCY:
6919         case ACTION_DEFAULT:
6920                 r = start_with_fallback(bus);
6921                 break;
6922
6923         case ACTION_RELOAD:
6924         case ACTION_REEXEC:
6925                 r = reload_with_fallback(bus);
6926                 break;
6927
6928         case ACTION_CANCEL_SHUTDOWN: {
6929                 _cleanup_free_ char *m = NULL;
6930
6931                 if (arg_wall) {
6932                         m = strv_join(arg_wall, " ");
6933                         if (!m) {
6934                                 r = log_oom();
6935                                 goto finish;
6936                         }
6937                 }
6938
6939                 r = send_shutdownd(arg_when, SD_SHUTDOWN_NONE, false, !arg_no_wall, m);
6940                 if (r < 0)
6941                         log_warning("Failed to talk to shutdownd, shutdown hasn't been cancelled: %s", strerror(-r));
6942                 break;
6943         }
6944
6945         case ACTION_RUNLEVEL:
6946         case _ACTION_INVALID:
6947         default:
6948                 assert_not_reached("Unknown action");
6949         }
6950
6951 finish:
6952         pager_close();
6953         ask_password_agent_close();
6954         polkit_agent_close();
6955
6956         strv_free(arg_types);
6957         strv_free(arg_states);
6958         strv_free(arg_properties);
6959
6960         return r < 0 ? EXIT_FAILURE : r;
6961 }