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 bool original_stdout_is_tty;
  81 static enum dependency {
  82         DEPENDENCY_FORWARD,
  83         DEPENDENCY_REVERSE,
  84         DEPENDENCY_AFTER,
  85         DEPENDENCY_BEFORE,
  86         _DEPENDENCY_MAX
  87 } arg_dependency = DEPENDENCY_FORWARD;
  88 static const char *arg_job_mode = "replace";
  89 static UnitFileScope arg_scope = UNIT_FILE_SYSTEM;
  90 static bool arg_no_block = false;
  91 static bool arg_no_legend = false;
  92 static bool arg_no_pager = false;
  93 static bool arg_no_wtmp = false;
  94 static bool arg_no_wall = false;
  95 static bool arg_no_reload = false;
  96 static bool arg_show_types = false;
  97 static bool arg_ignore_inhibitors = false;
  98 static bool arg_dry = false;
  99 static bool arg_quiet = false;
 100 static bool arg_full = false;
 101 static int arg_force = 0;
 102 static bool arg_ask_password = true;
 103 static bool arg_runtime = false;
 104 static char **arg_wall = NULL;
 105 static const char *arg_kill_who = NULL;
 106 static int arg_signal = SIGTERM;
 107 static const char *arg_root = NULL;
 108 static usec_t arg_when = 0;
 109 static enum action {
 110         _ACTION_INVALID,
 111         ACTION_SYSTEMCTL,
 112         ACTION_HALT,
 113         ACTION_POWEROFF,
 114         ACTION_REBOOT,
 115         ACTION_KEXEC,
 116         ACTION_EXIT,
 117         ACTION_SUSPEND,
 118         ACTION_HIBERNATE,
 119         ACTION_HYBRID_SLEEP,
 120         ACTION_RUNLEVEL2,
 121         ACTION_RUNLEVEL3,
 122         ACTION_RUNLEVEL4,
 123         ACTION_RUNLEVEL5,
 124         ACTION_RESCUE,
 125         ACTION_EMERGENCY,
 126         ACTION_DEFAULT,
 127         ACTION_RELOAD,
 128         ACTION_REEXEC,
 129         ACTION_RUNLEVEL,
 130         ACTION_CANCEL_SHUTDOWN,
 131         _ACTION_MAX
 132 } arg_action = ACTION_SYSTEMCTL;
 133 static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;
 134 static char *arg_host = NULL;
 135 static unsigned arg_lines = 10;
 136 static OutputMode arg_output = OUTPUT_SHORT;
 137 static bool arg_plain = false;
 138 static const struct {
 139         const char *verb;
 140         const char *method;
 141 } unit_actions[] = {
 142         { "start",                 "StartUnit" },
 143         { "stop",                  "StopUnit" },
 144         { "condstop",              "StopUnit" },
 145         { "reload",                "ReloadUnit" },
 146         { "restart",               "RestartUnit" },
 147         { "try-restart",           "TryRestartUnit" },
 148         { "condrestart",           "TryRestartUnit" },
 149         { "reload-or-restart",     "ReloadOrRestartUnit" },
 150         { "reload-or-try-restart", "ReloadOrTryRestartUnit" },
 151         { "condreload",            "ReloadOrTryRestartUnit" },
 152         { "force-reload",          "ReloadOrTryRestartUnit" }
 153 };
 154
 155 static int daemon_reload(sd_bus *bus, char **args);
 156 static int halt_now(enum action a);
 157
 158 static int check_one_unit(sd_bus *bus, const char *name, const char *good_states, bool quiet);
 159
 160 static char** strv_skip_first(char **strv) {
 161         if (strv_length(strv) > 0)
 162                 return strv + 1;
 163         return NULL;
 164 }
 165
 166 static void pager_open_if_enabled(void) {
 167
 168         if (arg_no_pager)
 169                 return;
 170
 171         pager_open(false);
 172 }
 173
 174 static void ask_password_agent_open_if_enabled(void) {
 175
 176         /* Open the password agent as a child process if necessary */
 177
 178         if (!arg_ask_password)
 179                 return;
 180
 181         if (arg_scope != UNIT_FILE_SYSTEM)
 182                 return;
 183
 184         if (arg_transport != BUS_TRANSPORT_LOCAL)
 185                 return;
 186
 187         ask_password_agent_open();
 188 }
 189
 190 #ifdef HAVE_LOGIND
 191 static void polkit_agent_open_if_enabled(void) {
 192
 193         /* Open the polkit agent as a child process if necessary */
 194
 195         if (!arg_ask_password)
 196                 return;
 197
 198         if (arg_scope != UNIT_FILE_SYSTEM)
 199                 return;
 200
 201         if (arg_transport != BUS_TRANSPORT_LOCAL)
 202                 return;
 203
 204         polkit_agent_open();
 205 }
 206 #endif
 207
 208 static int translate_bus_error_to_exit_status(int r, const sd_bus_error *error) {
 209         assert(error);
 210
 211         if (!sd_bus_error_is_set(error))
 212                 return r;
 213
 214         if (sd_bus_error_has_name(error, SD_BUS_ERROR_ACCESS_DENIED) ||
 215             sd_bus_error_has_name(error, BUS_ERROR_ONLY_BY_DEPENDENCY) ||
 216             sd_bus_error_has_name(error, BUS_ERROR_NO_ISOLATION) ||
 217             sd_bus_error_has_name(error, BUS_ERROR_TRANSACTION_IS_DESTRUCTIVE))
 218                 return EXIT_NOPERMISSION;
 219
 220         if (sd_bus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT))
 221                 return EXIT_NOTINSTALLED;
 222
 223         if (sd_bus_error_has_name(error, BUS_ERROR_JOB_TYPE_NOT_APPLICABLE) ||
 224             sd_bus_error_has_name(error, SD_BUS_ERROR_NOT_SUPPORTED))
 225                 return EXIT_NOTIMPLEMENTED;
 226
 227         if (sd_bus_error_has_name(error, BUS_ERROR_LOAD_FAILED))
 228                 return EXIT_NOTCONFIGURED;
 229
 230         if (r != 0)
 231                 return r;
 232
 233         return EXIT_FAILURE;
 234 }
 235
 236 static void warn_wall(enum action a) {
 237         static const char *table[_ACTION_MAX] = {
 238                 [ACTION_HALT]            = "The system is going down for system halt NOW!",
 239                 [ACTION_REBOOT]          = "The system is going down for reboot NOW!",
 240                 [ACTION_POWEROFF]        = "The system is going down for power-off NOW!",
 241                 [ACTION_KEXEC]           = "The system is going down for kexec reboot NOW!",
 242                 [ACTION_RESCUE]          = "The system is going down to rescue mode NOW!",
 243                 [ACTION_EMERGENCY]       = "The system is going down to emergency mode NOW!",
 244                 [ACTION_CANCEL_SHUTDOWN] = "The system shutdown has been cancelled NOW!"
 245         };
 246
 247         if (arg_no_wall)
 248                 return;
 249
 250         if (arg_wall) {
 251                 _cleanup_free_ char *p;
 252
 253                 p = strv_join(arg_wall, " ");
 254                 if (!p) {
 255                         log_oom();
 256                         return;
 257                 }
 258
 259                 if (*p) {
 260                         utmp_wall(p, NULL);
 261                         return;
 262                 }
 263         }
 264
 265         if (!table[a])
 266                 return;
 267
 268         utmp_wall(table[a], NULL);
 269 }
 270
 271 static bool avoid_bus(void) {
 272
 273         if (running_in_chroot() > 0)
 274                 return true;
 275
 276         if (sd_booted() <= 0)
 277                 return true;
 278
 279         if (!isempty(arg_root))
 280                 return true;
 281
 282         if (arg_scope == UNIT_FILE_GLOBAL)
 283                 return true;
 284
 285         return false;
 286 }
 287
 288 static int compare_unit_info(const void *a, const void *b) {
 289         const UnitInfo *u = a, *v = b;
 290         const char *d1, *d2;
 291
 292         d1 = strrchr(u->id, '.');
 293         d2 = strrchr(v->id, '.');
 294
 295         if (d1 && d2) {
 296                 int r;
 297
 298                 r = strcasecmp(d1, d2);
 299                 if (r != 0)
 300                         return r;
 301         }
 302
 303         return strcasecmp(u->id, v->id);
 304 }
 305
 306 static bool output_show_unit(const UnitInfo *u, char **patterns) {
 307         const char *dot;
 308
 309         if (!strv_isempty(arg_states))
 310                 return
 311                         strv_contains(arg_states, u->load_state) ||
 312                         strv_contains(arg_states, u->sub_state) ||
 313                         strv_contains(arg_states, u->active_state);
 314
 315         if (!strv_isempty(patterns)) {
 316                 char **pattern;
 317
 318                 STRV_FOREACH(pattern, patterns)
 319                         if (fnmatch(*pattern, u->id, FNM_NOESCAPE) == 0)
 320                                 return true;
 321                 return false;
 322         }
 323
 324         return (!arg_types || ((dot = strrchr(u->id, '.')) &&
 325                                strv_find(arg_types, dot+1))) &&
 326                 (arg_all || !(streq(u->active_state, "inactive")
 327                               || u->following[0]) || u->job_id > 0);
 328 }
 329
 330 static void output_units_list(const UnitInfo *unit_infos, unsigned c) {
 331         unsigned id_len, max_id_len, load_len, active_len, sub_len, job_len, desc_len;
 332         const UnitInfo *u;
 333         unsigned n_shown = 0;
 334         int job_count = 0;
 335
 336         max_id_len = sizeof("UNIT")-1;
 337         load_len = sizeof("LOAD")-1;
 338         active_len = sizeof("ACTIVE")-1;
 339         sub_len = sizeof("SUB")-1;
 340         job_len = sizeof("JOB")-1;
 341         desc_len = 0;
 342
 343         for (u = unit_infos; u < unit_infos + c; u++) {
 344                 max_id_len = MAX(max_id_len, strlen(u->id));
 345                 load_len = MAX(load_len, strlen(u->load_state));
 346                 active_len = MAX(active_len, strlen(u->active_state));
 347                 sub_len = MAX(sub_len, strlen(u->sub_state));
 348
 349                 if (u->job_id != 0) {
 350                         job_len = MAX(job_len, strlen(u->job_type));
 351                         job_count++;
 352                 }
 353         }
 354
 355         if (!arg_full && original_stdout_is_tty) {
 356                 unsigned basic_len;
 357
 358                 id_len = MIN(max_id_len, 25u);
 359                 basic_len = 5 + id_len + 5 + active_len + sub_len;
 360
 361                 if (job_count)
 362                         basic_len += job_len + 1;
 363
 364                 if (basic_len < (unsigned) columns()) {
 365                         unsigned extra_len, incr;
 366                         extra_len = columns() - basic_len;
 367
 368                         /* Either UNIT already got 25, or is fully satisfied.
 369                          * Grant up to 25 to DESC now. */
 370                         incr = MIN(extra_len, 25u);
 371                         desc_len += incr;
 372                         extra_len -= incr;
 373
 374                         /* split the remaining space between UNIT and DESC,
 375                          * but do not give UNIT more than it needs. */
 376                         if (extra_len > 0) {
 377                                 incr = MIN(extra_len / 2, max_id_len - id_len);
 378                                 id_len += incr;
 379                                 desc_len += extra_len - incr;
 380                         }
 381                 }
 382         } else
 383                 id_len = max_id_len;
 384
 385         for (u = unit_infos; u < unit_infos + c; u++) {
 386                 _cleanup_free_ char *e = NULL;
 387                 const char *on_loaded, *off_loaded, *on = "";
 388                 const char *on_active, *off_active, *off = "";
 389
 390                 if (!n_shown && !arg_no_legend) {
 391                         printf("%-*s %-*s %-*s %-*s ",
 392                                id_len, "UNIT",
 393                                load_len, "LOAD",
 394                                active_len, "ACTIVE",
 395                                sub_len, "SUB");
 396
 397                         if (job_count)
 398                                 printf("%-*s ", job_len, "JOB");
 399
 400                         if (!arg_full && arg_no_pager)
 401                                 printf("%.*s\n", desc_len, "DESCRIPTION");
 402                         else
 403                                 printf("%s\n", "DESCRIPTION");
 404                 }
 405
 406                 n_shown++;
 407
 408                 if (streq(u->load_state, "error") ||
 409                     streq(u->load_state, "not-found")) {
 410                         on_loaded = on = ansi_highlight_red();
 411                         off_loaded = off = ansi_highlight_off();
 412                 } else
 413                         on_loaded = off_loaded = "";
 414
 415                 if (streq(u->active_state, "failed")) {
 416                         on_active = on = ansi_highlight_red();
 417                         off_active = off = ansi_highlight_off();
 418                 } else
 419                         on_active = off_active = "";
 420
 421                 e = arg_full ? NULL : ellipsize(u->id, id_len, 33);
 422
 423                 printf("%s%-*s%s %s%-*s%s %s%-*s %-*s%s %-*s",
 424                        on, id_len, e ? e : u->id, off,
 425                        on_loaded, load_len, u->load_state, off_loaded,
 426                        on_active, active_len, u->active_state,
 427                        sub_len, u->sub_state, off_active,
 428                        job_count ? job_len + 1 : 0, u->job_id ? u->job_type : "");
 429
 430                 if (desc_len > 0)
 431                         printf("%.*s\n", desc_len, u->description);
 432                 else
 433                         printf("%s\n", u->description);
 434         }
 435
 436         if (!arg_no_legend) {
 437                 const char *on, *off;
 438
 439                 if (n_shown) {
 440                         puts("\nLOAD   = Reflects whether the unit definition was properly loaded.\n"
 441                              "ACTIVE = The high-level unit activation state, i.e. generalization of SUB.\n"
 442                              "SUB    = The low-level unit activation state, values depend on unit type.");
 443                         puts(job_count ? "JOB    = Pending job for the unit.\n" : "");
 444                         on = ansi_highlight();
 445                         off = ansi_highlight_off();
 446                 } else {
 447                         on = ansi_highlight_red();
 448                         off = ansi_highlight_off();
 449                 }
 450
 451                 if (arg_all)
 452                         printf("%s%u loaded units listed.%s\n"
 453                                "To show all installed unit files use 'systemctl list-unit-files'.\n",
 454                                on, n_shown, off);
 455                 else
 456                         printf("%s%u loaded units listed.%s Pass --all to see loaded but inactive units, too.\n"
 457                                "To show all installed unit files use 'systemctl list-unit-files'.\n",
 458                                on, n_shown, off);
 459         }
 460 }
 461
 462 static int get_unit_list(
 463                 sd_bus *bus,
 464                 sd_bus_message **_reply,
 465                 UnitInfo **_unit_infos,
 466                 char **patterns) {
 467
 468         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
 469         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
 470         _cleanup_free_ UnitInfo *unit_infos = NULL;
 471         size_t size = 0;
 472         int r, c = 0;
 473         UnitInfo u;
 474
 475         assert(bus);
 476         assert(_reply);
 477         assert(_unit_infos);
 478
 479         r = sd_bus_call_method(
 480                         bus,
 481                         "org.freedesktop.systemd1",
 482                         "/org/freedesktop/systemd1",
 483                         "org.freedesktop.systemd1.Manager",
 484                         "ListUnits",
 485                         &error,
 486                         &reply,
 487                         NULL);
 488         if (r < 0) {
 489                 log_error("Failed to list units: %s", bus_error_message(&error, r));
 490                 return r;
 491         }
 492
 493         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssssouso)");
 494         if (r < 0)
 495                 return bus_log_parse_error(r);
 496
 497         while ((r = bus_parse_unit_info(reply, &u)) > 0) {
 498                 if (!output_show_unit(&u, patterns))
 499                         continue;
 500
 501                 if (!GREEDY_REALLOC(unit_infos, size, c+1))
 502                         return log_oom();
 503
 504                 unit_infos[c++] = u;
 505         }
 506         if (r < 0)
 507                 return bus_log_parse_error(r);
 508
 509         r = sd_bus_message_exit_container(reply);
 510         if (r < 0)
 511                 return bus_log_parse_error(r);
 512
 513         *_reply = reply;
 514         reply = NULL;
 515
 516         *_unit_infos = unit_infos;
 517         unit_infos = NULL;
 518
 519         return c;
 520 }
 521
 522 static int list_units(sd_bus *bus, char **args) {
 523         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
 524         _cleanup_free_ UnitInfo *unit_infos = NULL;
 525         int r;
 526
 527         pager_open_if_enabled();
 528
 529         r = get_unit_list(bus, &reply, &unit_infos, strv_skip_first(args));
 530         if (r < 0)
 531                 return r;
 532
 533         qsort_safe(unit_infos, r, sizeof(UnitInfo), compare_unit_info);
 534         output_units_list(unit_infos, r);
 535
 536         return 0;
 537 }
 538
 539 static int get_triggered_units(
 540                 sd_bus *bus,
 541                 const char* path,
 542                 char*** ret) {
 543
 544         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
 545         int r;
 546
 547         r = sd_bus_get_property_strv(
 548                         bus,
 549                         "org.freedesktop.systemd1",
 550                         path,
 551                         "org.freedesktop.systemd1.Unit",
 552                         "Triggers",
 553                         &error,
 554                         ret);
 555
 556         if (r < 0)
 557                 log_error("Failed to determine triggers: %s", bus_error_message(&error, r));
 558
 559         return 0;
 560 }
 561
 562 static int get_listening(
 563                 sd_bus *bus,
 564                 const char* unit_path,
 565                 char*** listening) {
 566
 567         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
 568         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
 569         const char *type, *path;
 570         int r, n = 0;
 571
 572         r = sd_bus_get_property(
 573                         bus,
 574                         "org.freedesktop.systemd1",
 575                         unit_path,
 576                         "org.freedesktop.systemd1.Socket",
 577                         "Listen",
 578                         &error,
 579                         &reply,
 580                         "a(ss)");
 581         if (r < 0) {
 582                 log_error("Failed to get list of listening sockets: %s", bus_error_message(&error, r));
 583                 return r;
 584         }
 585
 586         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ss)");
 587         if (r < 0)
 588                 return bus_log_parse_error(r);
 589
 590         while ((r = sd_bus_message_read(reply, "(ss)", &type, &path)) > 0) {
 591
 592                 r = strv_extend(listening, type);
 593                 if (r < 0)
 594                         return log_oom();
 595
 596                 r = strv_extend(listening, path);
 597                 if (r < 0)
 598                         return log_oom();
 599
 600                 n++;
 601         }
 602         if (r < 0)
 603                 return bus_log_parse_error(r);
 604
 605         r = sd_bus_message_exit_container(reply);
 606         if (r < 0)
 607                 return bus_log_parse_error(r);
 608
 609         return n;
 610 }
 611
 612 struct socket_info {
 613         const char* id;
 614
 615         char* type;
 616         char* path;
 617
 618         /* Note: triggered is a list here, although it almost certainly
 619          * will always be one unit. Nevertheless, dbus API allows for multiple
 620          * values, so let's follow that.*/
 621         char** triggered;
 622
 623         /* The strv above is shared. free is set only in the first one. */
 624         bool own_triggered;
 625 };
 626
 627 static int socket_info_compare(const struct socket_info *a, const struct socket_info *b) {
 628         int o;
 629
 630         assert(a);
 631         assert(b);
 632
 633         o = strcmp(a->path, b->path);
 634         if (o == 0)
 635                 o = strcmp(a->type, b->type);
 636
 637         return o;
 638 }
 639
 640 static int output_sockets_list(struct socket_info *socket_infos, unsigned cs) {
 641         struct socket_info *s;
 642         unsigned pathlen = sizeof("LISTEN") - 1,
 643                 typelen = (sizeof("TYPE") - 1) * arg_show_types,
 644                 socklen = sizeof("UNIT") - 1,
 645                 servlen = sizeof("ACTIVATES") - 1;
 646         const char *on, *off;
 647
 648         for (s = socket_infos; s < socket_infos + cs; s++) {
 649                 unsigned tmp = 0;
 650                 char **a;
 651
 652                 socklen = MAX(socklen, strlen(s->id));
 653                 if (arg_show_types)
 654                         typelen = MAX(typelen, strlen(s->type));
 655                 pathlen = MAX(pathlen, strlen(s->path));
 656
 657                 STRV_FOREACH(a, s->triggered)
 658                         tmp += strlen(*a) + 2*(a != s->triggered);
 659                 servlen = MAX(servlen, tmp);
 660         }
 661
 662         if (cs) {
 663                 if (!arg_no_legend)
 664                         printf("%-*s %-*.*s%-*s %s\n",
 665                                pathlen, "LISTEN",
 666                                typelen + arg_show_types, typelen + arg_show_types, "TYPE ",
 667                                socklen, "UNIT",
 668                                "ACTIVATES");
 669
 670                 for (s = socket_infos; s < socket_infos + cs; s++) {
 671                         char **a;
 672
 673                         if (arg_show_types)
 674                                 printf("%-*s %-*s %-*s",
 675                                        pathlen, s->path, typelen, s->type, socklen, s->id);
 676                         else
 677                                 printf("%-*s %-*s",
 678                                        pathlen, s->path, socklen, s->id);
 679                         STRV_FOREACH(a, s->triggered)
 680                                 printf("%s %s",
 681                                        a == s->triggered ? "" : ",", *a);
 682                         printf("\n");
 683                 }
 684
 685                 on = ansi_highlight();
 686                 off = ansi_highlight_off();
 687                 if (!arg_no_legend)
 688                         printf("\n");
 689         } else {
 690                 on = ansi_highlight_red();
 691                 off = ansi_highlight_off();
 692         }
 693
 694         if (!arg_no_legend) {
 695                 printf("%s%u sockets listed.%s\n", on, cs, off);
 696                 if (!arg_all)
 697                         printf("Pass --all to see loaded but inactive sockets, too.\n");
 698         }
 699
 700         return 0;
 701 }
 702
 703 static int list_sockets(sd_bus *bus, char **args) {
 704         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
 705         _cleanup_free_ UnitInfo *unit_infos = NULL;
 706         _cleanup_free_ struct socket_info *socket_infos = NULL;
 707         const UnitInfo *u;
 708         struct socket_info *s;
 709         unsigned cs = 0;
 710         size_t size = 0;
 711         int r = 0, n;
 712
 713         pager_open_if_enabled();
 714
 715         n = get_unit_list(bus, &reply, &unit_infos, strv_skip_first(args));
 716         if (n < 0)
 717                 return n;
 718
 719         for (u = unit_infos; u < unit_infos + n; u++) {
 720                 _cleanup_strv_free_ char **listening = NULL, **triggered = NULL;
 721                 int i, c;
 722
 723                 if (!endswith(u->id, ".socket"))
 724                         continue;
 725
 726                 r = get_triggered_units(bus, u->unit_path, &triggered);
 727                 if (r < 0)
 728                         goto cleanup;
 729
 730                 c = get_listening(bus, u->unit_path, &listening);
 731                 if (c < 0) {
 732                         r = c;
 733                         goto cleanup;
 734                 }
 735
 736                 if (!GREEDY_REALLOC(socket_infos, size, cs + c)) {
 737                         r = log_oom();
 738                         goto cleanup;
 739                 }
 740
 741                 for (i = 0; i < c; i++)
 742                         socket_infos[cs + i] = (struct socket_info) {
 743                                 .id = u->id,
 744                                 .type = listening[i*2],
 745                                 .path = listening[i*2 + 1],
 746                                 .triggered = triggered,
 747                                 .own_triggered = i==0,
 748                         };
 749
 750                 /* from this point on we will cleanup those socket_infos */
 751                 cs += c;
 752                 free(listening);
 753                 listening = triggered = NULL; /* avoid cleanup */
 754         }
 755
 756         qsort_safe(socket_infos, cs, sizeof(struct socket_info),
 757                    (__compar_fn_t) socket_info_compare);
 758
 759         output_sockets_list(socket_infos, cs);
 760
 761  cleanup:
 762         assert(cs == 0 || socket_infos);
 763         for (s = socket_infos; s < socket_infos + cs; s++) {
 764                 free(s->type);
 765                 free(s->path);
 766                 if (s->own_triggered)
 767                         strv_free(s->triggered);
 768         }
 769
 770         return r;
 771 }
 772
 773 static int get_next_elapse(
 774                 sd_bus *bus,
 775                 const char *path,
 776                 dual_timestamp *next) {
 777
 778         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
 779         dual_timestamp t;
 780         int r;
 781
 782         assert(bus);
 783         assert(path);
 784         assert(next);
 785
 786         r = sd_bus_get_property_trivial(
 787                         bus,
 788                         "org.freedesktop.systemd1",
 789                         path,
 790                         "org.freedesktop.systemd1.Timer",
 791                         "NextElapseUSecMonotonic",
 792                         &error,
 793                         't',
 794                         &t.monotonic);
 795         if (r < 0) {
 796                 log_error("Failed to get next elapsation time: %s", bus_error_message(&error, r));
 797                 return r;
 798         }
 799
 800         r = sd_bus_get_property_trivial(
 801                         bus,
 802                         "org.freedesktop.systemd1",
 803                         path,
 804                         "org.freedesktop.systemd1.Timer",
 805                         "NextElapseUSecRealtime",
 806                         &error,
 807                         't',
 808                         &t.realtime);
 809         if (r < 0) {
 810                 log_error("Failed to get next elapsation time: %s", bus_error_message(&error, r));
 811                 return r;
 812         }
 813
 814         *next = t;
 815         return 0;
 816 }
 817
 818 struct timer_info {
 819         const char* id;
 820         usec_t next_elapse;
 821         char** triggered;
 822 };
 823
 824 static int timer_info_compare(const struct timer_info *a, const struct timer_info *b) {
 825         assert(a);
 826         assert(b);
 827
 828         if (a->next_elapse < b->next_elapse)
 829                 return -1;
 830         if (a->next_elapse > b->next_elapse)
 831                 return 1;
 832
 833         return strcmp(a->id, b->id);
 834 }
 835
 836 static int output_timers_list(struct timer_info *timer_infos, unsigned n) {
 837         struct timer_info *t;
 838         unsigned
 839                 nextlen = sizeof("NEXT") - 1,
 840                 leftlen = sizeof("LEFT") - 1,
 841                 unitlen = sizeof("UNIT") - 1,
 842                 activatelen = sizeof("ACTIVATES") - 1;
 843
 844         const char *on, *off;
 845
 846         assert(timer_infos || n == 0);
 847
 848         for (t = timer_infos; t < timer_infos + n; t++) {
 849                 unsigned ul = 0;
 850                 char **a;
 851
 852                 if (t->next_elapse > 0) {
 853                         char tstamp[FORMAT_TIMESTAMP_MAX] = "", trel[FORMAT_TIMESTAMP_RELATIVE_MAX] = "";
 854
 855                         format_timestamp(tstamp, sizeof(tstamp), t->next_elapse);
 856                         nextlen = MAX(nextlen, strlen(tstamp) + 1);
 857
 858                         format_timestamp_relative(trel, sizeof(trel), t->next_elapse);
 859                         leftlen = MAX(leftlen, strlen(trel));
 860                 }
 861
 862                 unitlen = MAX(unitlen, strlen(t->id));
 863
 864                 STRV_FOREACH(a, t->triggered)
 865                         ul += strlen(*a) + 2*(a != t->triggered);
 866                 activatelen = MAX(activatelen, ul);
 867         }
 868
 869         if (n > 0) {
 870                 if (!arg_no_legend)
 871                         printf("%-*s %-*s %-*s %s\n",
 872                                nextlen, "NEXT",
 873                                leftlen, "LEFT",
 874                                unitlen, "UNIT",
 875                                         "ACTIVATES");
 876
 877                 for (t = timer_infos; t < timer_infos + n; t++) {
 878                         char tstamp[FORMAT_TIMESTAMP_MAX] = "n/a", trel[FORMAT_TIMESTAMP_RELATIVE_MAX] = "n/a";
 879                         char **a;
 880
 881                         format_timestamp(tstamp, sizeof(tstamp), t->next_elapse);
 882                         format_timestamp_relative(trel, sizeof(trel), t->next_elapse);
 883
 884                         printf("%-*s %-*s %-*s",
 885                                nextlen, tstamp, leftlen, trel, unitlen, t->id);
 886
 887                         STRV_FOREACH(a, t->triggered)
 888                                 printf("%s %s",
 889                                        a == t->triggered ? "" : ",", *a);
 890                         printf("\n");
 891                 }
 892
 893                 on = ansi_highlight();
 894                 off = ansi_highlight_off();
 895                 if (!arg_no_legend)
 896                         printf("\n");
 897         } else {
 898                 on = ansi_highlight_red();
 899                 off = ansi_highlight_off();
 900         }
 901
 902         if (!arg_no_legend) {
 903                 printf("%s%u timers listed.%s\n", on, n, off);
 904                 if (!arg_all)
 905                         printf("Pass --all to see loaded but inactive timers, too.\n");
 906         }
 907
 908         return 0;
 909 }
 910
 911 static usec_t calc_next_elapse(dual_timestamp *nw, dual_timestamp *next) {
 912         usec_t next_elapse;
 913
 914         assert(nw);
 915         assert(next);
 916
 917         if (next->monotonic != (usec_t) -1 && next->monotonic > 0) {
 918                 usec_t converted;
 919
 920                 if (next->monotonic > nw->monotonic)
 921                         converted = nw->realtime + (next->monotonic - nw->monotonic);
 922                 else
 923                         converted = nw->realtime - (nw->monotonic - next->monotonic);
 924
 925                 if (next->realtime != (usec_t) -1 && next->realtime > 0)
 926                         next_elapse = MIN(converted, next->realtime);
 927                 else
 928                         next_elapse = converted;
 929
 930         } else
 931                 next_elapse = next->realtime;
 932
 933         return next_elapse;
 934 }
 935
 936 static int list_timers(sd_bus *bus, char **args) {
 937
 938         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
 939         _cleanup_free_ struct timer_info *timer_infos = NULL;
 940         _cleanup_free_ UnitInfo *unit_infos = NULL;
 941         struct timer_info *t;
 942         const UnitInfo *u;
 943         size_t size = 0;
 944         int n, c = 0;
 945         dual_timestamp nw;
 946         int r = 0;
 947
 948         pager_open_if_enabled();
 949
 950         n = get_unit_list(bus, &reply, &unit_infos, strv_skip_first(args));
 951         if (n < 0)
 952                 return n;
 953
 954         dual_timestamp_get(&nw);
 955
 956         for (u = unit_infos; u < unit_infos + n; u++) {
 957                 _cleanup_strv_free_ char **triggered = NULL;
 958                 dual_timestamp next = {};
 959                 usec_t m;
 960
 961                 if (!endswith(u->id, ".timer"))
 962                         continue;
 963
 964                 r = get_triggered_units(bus, u->unit_path, &triggered);
 965                 if (r < 0)
 966                         goto cleanup;
 967
 968                 r = get_next_elapse(bus, u->unit_path, &next);
 969                 if (r < 0)
 970                         goto cleanup;
 971
 972                 if (!GREEDY_REALLOC(timer_infos, size, c+1)) {
 973                         r = log_oom();
 974                         goto cleanup;
 975                 }
 976
 977                 m = calc_next_elapse(&nw, &next);
 978
 979                 timer_infos[c++] = (struct timer_info) {
 980                         .id = u->id,
 981                         .next_elapse = m,
 982                         .triggered = triggered,
 983                 };
 984
 985                 triggered = NULL; /* avoid cleanup */
 986         }
 987
 988         qsort_safe(timer_infos, c, sizeof(struct timer_info),
 989                    (__compar_fn_t) timer_info_compare);
 990
 991         output_timers_list(timer_infos, c);
 992
 993  cleanup:
 994         for (t = timer_infos; t < timer_infos + c; t++)
 995                 strv_free(t->triggered);
 996
 997         return r;
 998 }
 999
1000 static int compare_unit_file_list(const void *a, const void *b) {
1001         const char *d1, *d2;
1002         const UnitFileList *u = a, *v = b;
1003
1004         d1 = strrchr(u->path, '.');
1005         d2 = strrchr(v->path, '.');
1006
1007         if (d1 && d2) {
1008                 int r;
1009
1010                 r = strcasecmp(d1, d2);
1011                 if (r != 0)
1012                         return r;
1013         }
1014
1015         return strcasecmp(basename(u->path), basename(v->path));
1016 }
1017
1018 static bool output_show_unit_file(const UnitFileList *u, char **patterns) {
1019         const char *dot;
1020
1021         if (!strv_isempty(patterns)) {
1022                 char **pattern;
1023
1024                 STRV_FOREACH(pattern, patterns)
1025                         if (fnmatch(*pattern, basename(u->path), FNM_NOESCAPE) == 0)
1026                                 return true;
1027                 return false;
1028         }
1029
1030         return !arg_types || ((dot = strrchr(u->path, '.')) && strv_find(arg_types, dot+1));
1031 }
1032
1033 static void output_unit_file_list(const UnitFileList *units, unsigned c) {
1034         unsigned max_id_len, id_cols, state_cols;
1035         const UnitFileList *u;
1036
1037         max_id_len = sizeof("UNIT FILE")-1;
1038         state_cols = sizeof("STATE")-1;
1039
1040         for (u = units; u < units + c; u++) {
1041                 max_id_len = MAX(max_id_len, strlen(basename(u->path)));
1042                 state_cols = MAX(state_cols, strlen(unit_file_state_to_string(u->state)));
1043         }
1044
1045         if (!arg_full) {
1046                 unsigned basic_cols;
1047
1048                 id_cols = MIN(max_id_len, 25u);
1049                 basic_cols = 1 + id_cols + state_cols;
1050                 if (basic_cols < (unsigned) columns())
1051                         id_cols += MIN(columns() - basic_cols, max_id_len - id_cols);
1052         } else
1053                 id_cols = max_id_len;
1054
1055         if (!arg_no_legend)
1056                 printf("%-*s %-*s\n",
1057                        id_cols, "UNIT FILE",
1058                        state_cols, "STATE");
1059
1060         for (u = units; u < units + c; u++) {
1061                 _cleanup_free_ char *e = NULL;
1062                 const char *on, *off;
1063                 const char *id;
1064
1065                 if (u->state == UNIT_FILE_MASKED ||
1066                     u->state == UNIT_FILE_MASKED_RUNTIME ||
1067                     u->state == UNIT_FILE_DISABLED ||
1068                     u->state == UNIT_FILE_INVALID) {
1069                         on  = ansi_highlight_red();
1070                         off = ansi_highlight_off();
1071                 } else if (u->state == UNIT_FILE_ENABLED) {
1072                         on  = ansi_highlight_green();
1073                         off = ansi_highlight_off();
1074                 } else
1075                         on = off = "";
1076
1077                 id = basename(u->path);
1078
1079                 e = arg_full ? NULL : ellipsize(id, id_cols, 33);
1080
1081                 printf("%-*s %s%-*s%s\n",
1082                        id_cols, e ? e : id,
1083                        on, state_cols, unit_file_state_to_string(u->state), off);
1084         }
1085
1086         if (!arg_no_legend)
1087                 printf("\n%u unit files listed.\n", c);
1088 }
1089
1090 static int list_unit_files(sd_bus *bus, char **args) {
1091         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1092         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1093         _cleanup_free_ UnitFileList *units = NULL;
1094         UnitFileList *unit;
1095         size_t size = 0;
1096         unsigned c = 0;
1097         const char *state;
1098         char *path;
1099         int r;
1100
1101         pager_open_if_enabled();
1102
1103         if (avoid_bus()) {
1104                 Hashmap *h;
1105                 UnitFileList *u;
1106                 Iterator i;
1107                 unsigned n_units;
1108
1109                 h = hashmap_new(string_hash_func, string_compare_func);
1110                 if (!h)
1111                         return log_oom();
1112
1113                 r = unit_file_get_list(arg_scope, arg_root, h);
1114                 if (r < 0) {
1115                         unit_file_list_free(h);
1116                         log_error("Failed to get unit file list: %s", strerror(-r));
1117                         return r;
1118                 }
1119
1120                 n_units = hashmap_size(h);
1121                 units = new(UnitFileList, n_units);
1122                 if (!units) {
1123                         unit_file_list_free(h);
1124                         return log_oom();
1125                 }
1126
1127                 HASHMAP_FOREACH(u, h, i) {
1128                         if (!output_show_unit_file(u, strv_skip_first(args)))
1129                                 continue;
1130
1131                         units[c++] = *u;
1132                         free(u);
1133                 }
1134
1135                 assert(c <= n_units);
1136                 hashmap_free(h);
1137         } else {
1138                 r = sd_bus_call_method(
1139                                 bus,
1140                                 "org.freedesktop.systemd1",
1141                                 "/org/freedesktop/systemd1",
1142                                 "org.freedesktop.systemd1.Manager",
1143                                 "ListUnitFiles",
1144                                 &error,
1145                                 &reply,
1146                                 NULL);
1147                 if (r < 0) {
1148                         log_error("Failed to list unit files: %s", bus_error_message(&error, r));
1149                         return r;
1150                 }
1151
1152                 r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ss)");
1153                 if (r < 0)
1154                         return bus_log_parse_error(r);
1155
1156                 while ((r = sd_bus_message_read(reply, "(ss)", &path, &state)) > 0) {
1157
1158                         if (!GREEDY_REALLOC(units, size, c + 1))
1159                                 return log_oom();
1160
1161                         units[c] = (struct UnitFileList) {
1162                                 path,
1163                                 unit_file_state_from_string(state)
1164                         };
1165
1166                         if (output_show_unit_file(&units[c], strv_skip_first(args)))
1167                                 c ++;
1168
1169                 }
1170                 if (r < 0)
1171                         return bus_log_parse_error(r);
1172
1173                 r = sd_bus_message_exit_container(reply);
1174                 if (r < 0)
1175                         return bus_log_parse_error(r);
1176         }
1177
1178         if (c > 0) {
1179                 qsort(units, c, sizeof(UnitFileList), compare_unit_file_list);
1180                 output_unit_file_list(units, c);
1181         }
1182
1183         if (avoid_bus())
1184                 for (unit = units; unit < units + c; unit++)
1185                         free(unit->path);
1186
1187         return 0;
1188 }
1189
1190 static int list_dependencies_print(const char *name, int level, unsigned int branches, bool last) {
1191         _cleanup_free_ char *n = NULL;
1192         size_t max_len = MAX(columns(),20u);
1193         size_t len = 0;
1194         int i;
1195
1196         if (!arg_plain) {
1197
1198                 for (i = level - 1; i >= 0; i--) {
1199                         len += 2;
1200                         if (len > max_len - 3 && !arg_full) {
1201                                 printf("%s...\n",max_len % 2 ? "" : " ");
1202                                 return 0;
1203                         }
1204                         printf("%s", draw_special_char(branches & (1 << i) ? DRAW_TREE_VERT : DRAW_TREE_SPACE));
1205                 }
1206                 len += 2;
1207
1208                 if (len > max_len - 3 && !arg_full) {
1209                         printf("%s...\n",max_len % 2 ? "" : " ");
1210                         return 0;
1211                 }
1212
1213                 printf("%s", draw_special_char(last ? DRAW_TREE_RIGHT : DRAW_TREE_BRANCH));
1214         }
1215
1216         if (arg_full){
1217                 printf("%s\n", name);
1218                 return 0;
1219         }
1220
1221         n = ellipsize(name, max_len-len, 100);
1222         if (!n)
1223                 return log_oom();
1224
1225         printf("%s\n", n);
1226         return 0;
1227 }
1228
1229 static int list_dependencies_get_dependencies(sd_bus *bus, const char *name, char ***deps) {
1230
1231         static const char *dependencies[_DEPENDENCY_MAX] = {
1232                 [DEPENDENCY_FORWARD] = "Requires\0"
1233                                        "RequiresOverridable\0"
1234                                        "Requisite\0"
1235                                        "RequisiteOverridable\0"
1236                                        "Wants\0",
1237                 [DEPENDENCY_REVERSE] = "RequiredBy\0"
1238                                        "RequiredByOverridable\0"
1239                                        "WantedBy\0"
1240                                        "PartOf\0",
1241                 [DEPENDENCY_AFTER]   = "After\0",
1242                 [DEPENDENCY_BEFORE]  = "Before\0",
1243         };
1244
1245         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1246         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1247         _cleanup_strv_free_ char **ret = NULL;
1248         _cleanup_free_ char *path = NULL;
1249         int r;
1250
1251         assert(bus);
1252         assert(name);
1253         assert(deps);
1254         assert_cc(ELEMENTSOF(dependencies) == _DEPENDENCY_MAX);
1255
1256         path = unit_dbus_path_from_name(name);
1257         if (!path)
1258                 return log_oom();
1259
1260         r = sd_bus_call_method(
1261                         bus,
1262                         "org.freedesktop.systemd1",
1263                         path,
1264                         "org.freedesktop.DBus.Properties",
1265                         "GetAll",
1266                         &error,
1267                         &reply,
1268                         "s", "org.freedesktop.systemd1.Unit");
1269         if (r < 0) {
1270                 log_error("Failed to get properties of %s: %s", name, bus_error_message(&error, r));
1271                 return r;
1272         }
1273
1274         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "{sv}");
1275         if (r < 0)
1276                 return bus_log_parse_error(r);
1277
1278         while ((r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) {
1279                 const char *prop;
1280
1281                 r = sd_bus_message_read(reply, "s", &prop);
1282                 if (r < 0)
1283                         return bus_log_parse_error(r);
1284
1285                 if (!nulstr_contains(dependencies[arg_dependency], prop)) {
1286                         r = sd_bus_message_skip(reply, "v");
1287                         if (r < 0)
1288                                 return bus_log_parse_error(r);
1289                 } else {
1290
1291                         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_VARIANT, "as");
1292                         if (r < 0)
1293                                 return bus_log_parse_error(r);
1294
1295                         r = bus_message_read_strv_extend(reply, &ret);
1296                         if (r < 0)
1297                                 return bus_log_parse_error(r);
1298
1299                         r = sd_bus_message_exit_container(reply);
1300                         if (r < 0)
1301                                 return bus_log_parse_error(r);
1302                 }
1303
1304                 r = sd_bus_message_exit_container(reply);
1305                 if (r < 0)
1306                         return bus_log_parse_error(r);
1307
1308         }
1309         if (r < 0)
1310                 return bus_log_parse_error(r);
1311
1312         r = sd_bus_message_exit_container(reply);
1313         if (r < 0)
1314                 return bus_log_parse_error(r);
1315
1316         *deps = ret;
1317         ret = NULL;
1318
1319         return 0;
1320 }
1321
1322 static int list_dependencies_compare(const void *_a, const void *_b) {
1323         const char **a = (const char**) _a, **b = (const char**) _b;
1324
1325         if (unit_name_to_type(*a) == UNIT_TARGET && unit_name_to_type(*b) != UNIT_TARGET)
1326                 return 1;
1327         if (unit_name_to_type(*a) != UNIT_TARGET && unit_name_to_type(*b) == UNIT_TARGET)
1328                 return -1;
1329
1330         return strcasecmp(*a, *b);
1331 }
1332
1333 static int list_dependencies_one(
1334                 sd_bus *bus,
1335                 const char *name,
1336                 int level,
1337                 char ***units,
1338                 unsigned int branches) {
1339
1340         _cleanup_strv_free_ char **deps = NULL;
1341         char **c;
1342         int r = 0;
1343
1344         assert(bus);
1345         assert(name);
1346         assert(units);
1347
1348         r = strv_extend(units, name);
1349         if (r < 0)
1350                 return log_oom();
1351
1352         r = list_dependencies_get_dependencies(bus, name, &deps);
1353         if (r < 0)
1354                 return r;
1355
1356         qsort_safe(deps, strv_length(deps), sizeof (char*), list_dependencies_compare);
1357
1358         STRV_FOREACH(c, deps) {
1359                 int state;
1360
1361                 if (strv_contains(*units, *c)) {
1362                         if (!arg_plain) {
1363                                 r = list_dependencies_print("...", level + 1, (branches << 1) | (c[1] == NULL ? 0 : 1), 1);
1364                                 if (r < 0)
1365                                         return r;
1366                         }
1367                         continue;
1368                 }
1369
1370                 state = check_one_unit(bus, *c, "activating\0active\0reloading\0", true);
1371                 if (state > 0)
1372                         printf("%s%s%s", ansi_highlight_green(), draw_special_char(DRAW_BLACK_CIRCLE), ansi_highlight_off());
1373                 else
1374                         printf("%s%s%s", ansi_highlight_red(), draw_special_char(DRAW_BLACK_CIRCLE), ansi_highlight_off());
1375
1376                 r = list_dependencies_print(*c, level, branches, c[1] == NULL);
1377                 if (r < 0)
1378                         return r;
1379
1380                 if (arg_all || unit_name_to_type(*c) == UNIT_TARGET) {
1381                        r = list_dependencies_one(bus, *c, level + 1, units, (branches << 1) | (c[1] == NULL ? 0 : 1));
1382                        if (r < 0)
1383                                return r;
1384                 }
1385         }
1386
1387         if (!arg_plain)
1388                 strv_remove(*units, name);
1389
1390         return 0;
1391 }
1392
1393 static int list_dependencies(sd_bus *bus, char **args) {
1394         _cleanup_strv_free_ char **units = NULL;
1395         _cleanup_free_ char *unit = NULL;
1396         const char *u;
1397
1398         assert(bus);
1399
1400         if (args[1]) {
1401                 unit = unit_name_mangle(args[1], MANGLE_NOGLOB);
1402                 if (!unit)
1403                         return log_oom();
1404                 u = unit;
1405         } else
1406                 u = SPECIAL_DEFAULT_TARGET;
1407
1408         pager_open_if_enabled();
1409
1410         puts(u);
1411
1412         return list_dependencies_one(bus, u, 0, &units, 0);
1413 }
1414
1415 struct machine_info {
1416         bool is_host;
1417         char *name;
1418         char *state;
1419         char *control_group;
1420         uint32_t n_failed_units;
1421         uint32_t n_jobs;
1422         usec_t timestamp;
1423 };
1424
1425 static const struct bus_properties_map machine_info_property_map[] = {
1426         { "SystemState",        "s", NULL, offsetof(struct machine_info, state)          },
1427         { "NJobs",              "u", NULL, offsetof(struct machine_info, n_jobs)         },
1428         { "NFailedUnits",       "u", NULL, offsetof(struct machine_info, n_failed_units) },
1429         { "ControlGroup",       "s", NULL, offsetof(struct machine_info, control_group)  },
1430         { "UserspaceTimestamp", "t", NULL, offsetof(struct machine_info, timestamp)      },
1431         {}
1432 };
1433
1434 static void free_machines_list(struct machine_info *machine_infos, int n) {
1435         int i;
1436
1437         if (!machine_infos)
1438                 return;
1439
1440         for (i = 0; i < n; i++) {
1441                 free(machine_infos[i].name);
1442                 free(machine_infos[i].state);
1443                 free(machine_infos[i].control_group);
1444         }
1445
1446         free(machine_infos);
1447 }
1448
1449 static int compare_machine_info(const void *a, const void *b) {
1450         const struct machine_info *u = a, *v = b;
1451
1452         if (u->is_host != v->is_host)
1453                 return u->is_host > v->is_host ? 1 : -1;
1454
1455         return strcasecmp(u->name, v->name);
1456 }
1457
1458 static int get_machine_properties(sd_bus *bus, struct machine_info *mi) {
1459         _cleanup_bus_unref_ sd_bus *container = NULL;
1460         int r;
1461
1462         assert(mi);
1463
1464         if (!bus) {
1465                 r = sd_bus_open_system_container(&container, mi->name);
1466                 if (r < 0)
1467                         return r;
1468
1469                 bus = container;
1470         }
1471
1472         r = bus_map_all_properties(bus, "org.freedesktop.systemd1", "/org/freedesktop/systemd1", machine_info_property_map, mi);
1473         if (r < 0)
1474                 return r;
1475
1476         return 0;
1477 }
1478
1479 static bool output_show_machine(const char *name, char **patterns) {
1480         char **i;
1481
1482         assert(name);
1483
1484         if (strv_isempty(patterns))
1485                 return true;
1486
1487         STRV_FOREACH(i, patterns)
1488                 if (fnmatch(*i, name, FNM_NOESCAPE) == 0)
1489                         return true;
1490
1491         return false;
1492 }
1493
1494 static int get_machine_list(
1495                 sd_bus *bus,
1496                 struct machine_info **_machine_infos,
1497                 char **patterns) {
1498
1499         struct machine_info *machine_infos = NULL;
1500         _cleanup_strv_free_ char **m = NULL;
1501         _cleanup_free_ char *hn = NULL;
1502         size_t sz = 0;
1503         char **i;
1504         int c = 0;
1505
1506         hn = gethostname_malloc();
1507         if (!hn)
1508                 return log_oom();
1509
1510         if (output_show_machine(hn, patterns)) {
1511                 if (!GREEDY_REALLOC0(machine_infos, sz, c+1))
1512                         return log_oom();
1513
1514                 machine_infos[c].is_host = true;
1515                 machine_infos[c].name = hn;
1516                 hn = NULL;
1517
1518                 get_machine_properties(bus, &machine_infos[c]);
1519                 c++;
1520         }
1521
1522         sd_get_machine_names(&m);
1523         STRV_FOREACH(i, m) {
1524                 _cleanup_free_ char *class = NULL;
1525
1526                 if (!output_show_machine(*i, patterns))
1527                         continue;
1528
1529                 sd_machine_get_class(*i, &class);
1530                 if (!streq_ptr(class, "container"))
1531                         continue;
1532
1533                 if (!GREEDY_REALLOC0(machine_infos, sz, c+1)) {
1534                         free_machines_list(machine_infos, c);
1535                         return log_oom();
1536                 }
1537
1538                 machine_infos[c].is_host = false;
1539                 machine_infos[c].name = strdup(*i);
1540                 if (!machine_infos[c].name) {
1541                         free_machines_list(machine_infos, c);
1542                         return log_oom();
1543                 }
1544
1545                 get_machine_properties(NULL, &machine_infos[c]);
1546                 c++;
1547         }
1548
1549         *_machine_infos = machine_infos;
1550         return c;
1551 }
1552
1553 static void output_machines_list(struct machine_info *machine_infos, unsigned n) {
1554         struct machine_info *m;
1555         unsigned
1556                 namelen = sizeof("NAME") - 1,
1557                 statelen = sizeof("STATE") - 1,
1558                 failedlen = sizeof("FAILED") - 1,
1559                 jobslen = sizeof("JOBS") - 1;
1560
1561         assert(machine_infos || n == 0);
1562
1563         for (m = machine_infos; m < machine_infos + n; m++) {
1564                 namelen = MAX(namelen, strlen(m->name) + (m->is_host ? sizeof(" (host)") - 1 : 0));
1565                 statelen = MAX(statelen, m->state ? strlen(m->state) : 0);
1566                 failedlen = MAX(failedlen, DECIMAL_STR_WIDTH(m->n_failed_units));
1567                 jobslen = MAX(jobslen, DECIMAL_STR_WIDTH(m->n_jobs));
1568         }
1569
1570         if (!arg_no_legend)
1571                 printf("%-*s %-*s %-*s %-*s\n",
1572                          namelen, "NAME",
1573                         statelen, "STATE",
1574                        failedlen, "FAILED",
1575                          jobslen, "JOBS");
1576
1577         for (m = machine_infos; m < machine_infos + n; m++) {
1578                 const char *on_state, *off_state, *on_failed, *off_failed;
1579
1580                 if (streq_ptr(m->state, "degraded")) {
1581                         on_state = ansi_highlight_red();
1582                         off_state = ansi_highlight_off();
1583                 } else if (!streq_ptr(m->state, "running")) {
1584                         on_state = ansi_highlight_yellow();
1585                         off_state = ansi_highlight_off();
1586                 } else
1587                         on_state = off_state = "";
1588
1589                 if (m->n_failed_units > 0) {
1590                         on_failed = ansi_highlight_red();
1591                         off_failed = ansi_highlight_off();
1592                 } else
1593                         on_failed = off_failed = "";
1594
1595                 if (m->is_host)
1596                         printf("%-*s (host) %s%-*s%s %s%*u%s %*u\n",
1597                                (int) (namelen - (sizeof(" (host)")-1)), strna(m->name),
1598                                on_state, statelen, strna(m->state), off_state,
1599                                on_failed, failedlen, m->n_failed_units, off_failed,
1600                                jobslen, m->n_jobs);
1601                 else
1602                         printf("%-*s %s%-*s%s %s%*u%s %*u\n",
1603                                namelen, strna(m->name),
1604                                on_state, statelen, strna(m->state), off_state,
1605                                on_failed, failedlen, m->n_failed_units, off_failed,
1606                                jobslen, m->n_jobs);
1607         }
1608
1609         if (!arg_no_legend)
1610                 printf("\n%u machines listed.\n", n);
1611 }
1612
1613 static int list_machines(sd_bus *bus, char **args) {
1614         struct machine_info *machine_infos = NULL;
1615         int r;
1616
1617         assert(bus);
1618
1619         if (geteuid() != 0) {
1620                 log_error("Must be root.");
1621                 return -EPERM;
1622         }
1623
1624         pager_open_if_enabled();
1625
1626         r = get_machine_list(bus, &machine_infos, strv_skip_first(args));
1627         if (r < 0)
1628                 return r;
1629
1630         qsort_safe(machine_infos, r, sizeof(struct machine_info), compare_machine_info);
1631         output_machines_list(machine_infos, r);
1632         free_machines_list(machine_infos, r);
1633
1634         return 0;
1635 }
1636
1637 static int get_default(sd_bus *bus, char **args) {
1638         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1639         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1640         _cleanup_free_ char *_path = NULL;
1641         const char *path;
1642         int r;
1643
1644         if (!bus || avoid_bus()) {
1645                 r = unit_file_get_default(arg_scope, arg_root, &_path);
1646                 if (r < 0) {
1647                         log_error("Failed to get default target: %s", strerror(-r));
1648                         return r;
1649                 }
1650                 path = _path;
1651
1652         } else {
1653                 r = sd_bus_call_method(
1654                                 bus,
1655                                 "org.freedesktop.systemd1",
1656                                 "/org/freedesktop/systemd1",
1657                                 "org.freedesktop.systemd1.Manager",
1658                                 "GetDefaultTarget",
1659                                 &error,
1660                                 &reply,
1661                                 NULL);
1662                 if (r < 0) {
1663                         log_error("Failed to get default target: %s", bus_error_message(&error, -r));
1664                         return r;
1665                 }
1666
1667                 r = sd_bus_message_read(reply, "s", &path);
1668                 if (r < 0)
1669                         return bus_log_parse_error(r);
1670         }
1671
1672         if (path)
1673                 printf("%s\n", path);
1674
1675         return 0;
1676 }
1677
1678 static void dump_unit_file_changes(const UnitFileChange *changes, unsigned n_changes) {
1679         unsigned i;
1680
1681         assert(changes || n_changes == 0);
1682
1683         for (i = 0; i < n_changes; i++) {
1684                 if (changes[i].type == UNIT_FILE_SYMLINK)
1685                         log_info("ln -s '%s' '%s'", changes[i].source, changes[i].path);
1686                 else
1687                         log_info("rm '%s'", changes[i].path);
1688         }
1689 }
1690
1691 static int deserialize_and_dump_unit_file_changes(sd_bus_message *m) {
1692         const char *type, *path, *source;
1693         int r;
1694
1695         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sss)");
1696         if (r < 0)
1697                 return bus_log_parse_error(r);
1698
1699         while ((r = sd_bus_message_read(m, "(sss)", &type, &path, &source)) > 0) {
1700                 if (!arg_quiet) {
1701                         if (streq(type, "symlink"))
1702                                 log_info("ln -s '%s' '%s'", source, path);
1703                         else
1704                                 log_info("rm '%s'", path);
1705                 }
1706         }
1707         if (r < 0)
1708                 return bus_log_parse_error(r);
1709
1710         r = sd_bus_message_exit_container(m);
1711         if (r < 0)
1712                 return bus_log_parse_error(r);
1713
1714         return 0;
1715 }
1716
1717 static int set_default(sd_bus *bus, char **args) {
1718         _cleanup_free_ char *unit = NULL;
1719         UnitFileChange *changes = NULL;
1720         unsigned n_changes = 0;
1721         int r;
1722
1723         unit = unit_name_mangle_with_suffix(args[1], MANGLE_NOGLOB, ".target");
1724         if (!unit)
1725                 return log_oom();
1726
1727         if (!bus || avoid_bus()) {
1728                 r = unit_file_set_default(arg_scope, arg_root, unit, arg_force, &changes, &n_changes);
1729                 if (r < 0) {
1730                         log_error("Failed to set default target: %s", strerror(-r));
1731                         return r;
1732                 }
1733
1734                 if (!arg_quiet)
1735                         dump_unit_file_changes(changes, n_changes);
1736
1737                 r = 0;
1738         } else {
1739                 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1740                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1741
1742                 r = sd_bus_call_method(
1743                                 bus,
1744                                 "org.freedesktop.systemd1",
1745                                 "/org/freedesktop/systemd1",
1746                                 "org.freedesktop.systemd1.Manager",
1747                                 "SetDefaultTarget",
1748                                 &error,
1749                                 &reply,
1750                                 "sb", unit, arg_force);
1751                 if (r < 0) {
1752                         log_error("Failed to set default target: %s", bus_error_message(&error, -r));
1753                         return r;
1754                 }
1755
1756                 r = deserialize_and_dump_unit_file_changes(reply);
1757                 if (r < 0)
1758                         return r;
1759
1760                 /* Try to reload if enabeld */
1761                 if (!arg_no_reload)
1762                         r = daemon_reload(bus, args);
1763                 else
1764                         r = 0;
1765         }
1766
1767         unit_file_changes_free(changes, n_changes);
1768
1769         return r;
1770 }
1771
1772 struct job_info {
1773         uint32_t id;
1774         const char *name, *type, *state;
1775 };
1776
1777 static void output_jobs_list(const struct job_info* jobs, unsigned n, bool skipped) {
1778         unsigned id_len, unit_len, type_len, state_len;
1779         const struct job_info *j;
1780         const char *on, *off;
1781         bool shorten = false;
1782
1783         assert(n == 0 || jobs);
1784
1785         if (n == 0) {
1786                 on = ansi_highlight_green();
1787                 off = ansi_highlight_off();
1788
1789                 printf("%sNo jobs %s.%s\n", on, skipped ? "listed" : "running", off);
1790                 return;
1791         }
1792
1793         pager_open_if_enabled();
1794
1795         id_len = sizeof("JOB")-1;
1796         unit_len = sizeof("UNIT")-1;
1797         type_len = sizeof("TYPE")-1;
1798         state_len = sizeof("STATE")-1;
1799
1800         for (j = jobs; j < jobs + n; j++) {
1801                 uint32_t id = j->id;
1802                 assert(j->name && j->type && j->state);
1803
1804                 id_len = MAX(id_len, DECIMAL_STR_WIDTH(id));
1805                 unit_len = MAX(unit_len, strlen(j->name));
1806                 type_len = MAX(type_len, strlen(j->type));
1807                 state_len = MAX(state_len, strlen(j->state));
1808         }
1809
1810         if (!arg_full && id_len + 1 + unit_len + type_len + 1 + state_len > columns()) {
1811                 unit_len = MAX(33u, columns() - id_len - type_len - state_len - 3);
1812                 shorten = true;
1813         }
1814
1815         if (!arg_no_legend)
1816                 printf("%*s %-*s %-*s %-*s\n",
1817                        id_len, "JOB",
1818                        unit_len, "UNIT",
1819                        type_len, "TYPE",
1820                        state_len, "STATE");
1821
1822         for (j = jobs; j < jobs + n; j++) {
1823                 _cleanup_free_ char *e = NULL;
1824
1825                 if (streq(j->state, "running")) {
1826                         on = ansi_highlight();
1827                         off = ansi_highlight_off();
1828                 } else
1829                         on = off = "";
1830
1831                 e = shorten ? ellipsize(j->name, unit_len, 33) : NULL;
1832                 printf("%*u %s%-*s%s %-*s %s%-*s%s\n",
1833                        id_len, j->id,
1834                        on, unit_len, e ? e : j->name, off,
1835                        type_len, j->type,
1836                        on, state_len, j->state, off);
1837         }
1838
1839         if (!arg_no_legend) {
1840                 on = ansi_highlight();
1841                 off = ansi_highlight_off();
1842
1843                 printf("\n%s%u jobs listed%s.\n", on, n, off);
1844         }
1845 }
1846
1847 static bool output_show_job(struct job_info *job, char **patterns) {
1848         char **pattern;
1849
1850         assert(job);
1851
1852         if (strv_isempty(patterns))
1853                 return true;
1854
1855         STRV_FOREACH(pattern, patterns)
1856                 if (fnmatch(*pattern, job->name, FNM_NOESCAPE) == 0)
1857                         return true;
1858         return false;
1859 }
1860
1861 static int list_jobs(sd_bus *bus, char **args) {
1862         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1863         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1864         const char *name, *type, *state, *job_path, *unit_path;
1865         _cleanup_free_ struct job_info *jobs = NULL;
1866         size_t size = 0;
1867         unsigned c = 0;
1868         uint32_t id;
1869         int r;
1870         bool skipped = false;
1871
1872         r = sd_bus_call_method(
1873                         bus,
1874                         "org.freedesktop.systemd1",
1875                         "/org/freedesktop/systemd1",
1876                         "org.freedesktop.systemd1.Manager",
1877                         "ListJobs",
1878                         &error,
1879                         &reply,
1880                         NULL);
1881         if (r < 0) {
1882                 log_error("Failed to list jobs: %s", bus_error_message(&error, r));
1883                 return r;
1884         }
1885
1886         r = sd_bus_message_enter_container(reply, 'a', "(usssoo)");
1887         if (r < 0)
1888                 return bus_log_parse_error(r);
1889
1890         while ((r = sd_bus_message_read(reply, "(usssoo)", &id, &name, &type, &state, &job_path, &unit_path)) > 0) {
1891                 struct job_info job = { id, name, type, state };
1892
1893                 if (!output_show_job(&job, strv_skip_first(args))) {
1894                         skipped = true;
1895                         continue;
1896                 }
1897
1898                 if (!GREEDY_REALLOC(jobs, size, c + 1))
1899                         return log_oom();
1900
1901                 jobs[c++] = job;
1902         }
1903         if (r < 0)
1904                 return bus_log_parse_error(r);
1905
1906         r = sd_bus_message_exit_container(reply);
1907         if (r < 0)
1908                 return bus_log_parse_error(r);
1909
1910         output_jobs_list(jobs, c, skipped);
1911         return r;
1912 }
1913
1914 static int cancel_job(sd_bus *bus, char **args) {
1915         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1916         char **name;
1917
1918         assert(args);
1919
1920         if (strv_length(args) <= 1)
1921                 return daemon_reload(bus, args);
1922
1923         STRV_FOREACH(name, args+1) {
1924                 uint32_t id;
1925                 int r;
1926
1927                 r = safe_atou32(*name, &id);
1928                 if (r < 0) {
1929                         log_error("Failed to parse job id \"%s\": %s", *name, strerror(-r));
1930                         return r;
1931                 }
1932
1933                 r = sd_bus_call_method(
1934                                 bus,
1935                                 "org.freedesktop.systemd1",
1936                                 "/org/freedesktop/systemd1",
1937                                 "org.freedesktop.systemd1.Manager",
1938                                 "CancelJob",
1939                                 &error,
1940                                 NULL,
1941                                 "u", id);
1942                 if (r < 0) {
1943                         log_error("Failed to cancel job %u: %s", (unsigned) id, bus_error_message(&error, r));
1944                         return r;
1945                 }
1946         }
1947
1948         return 0;
1949 }
1950
1951 static int need_daemon_reload(sd_bus *bus, const char *unit) {
1952         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1953         const char *path;
1954         int b, r;
1955
1956         /* We ignore all errors here, since this is used to show a
1957          * warning only */
1958
1959         /* We don't use unit_dbus_path_from_name() directly since we
1960          * don't want to load the unit if it isn't loaded. */
1961
1962         r = sd_bus_call_method(
1963                         bus,
1964                         "org.freedesktop.systemd1",
1965                         "/org/freedesktop/systemd1",
1966                         "org.freedesktop.systemd1.Manager",
1967                         "GetUnit",
1968                         NULL,
1969                         &reply,
1970                         "s", unit);
1971         if (r < 0)
1972                 return r;
1973
1974         r = sd_bus_message_read(reply, "o", &path);
1975         if (r < 0)
1976                 return r;
1977
1978         r = sd_bus_get_property_trivial(
1979                         bus,
1980                         "org.freedesktop.systemd1",
1981                         path,
1982                         "org.freedesktop.systemd1.Unit",
1983                         "NeedDaemonReload",
1984                         NULL,
1985                         'b', &b);
1986         if (r < 0)
1987                 return r;
1988
1989         return b;
1990 }
1991
1992 typedef struct WaitData {
1993         Set *set;
1994
1995         char *name;
1996         char *result;
1997 } WaitData;
1998
1999 static int wait_filter(sd_bus *bus, sd_bus_message *m, void *data, sd_bus_error *error) {
2000         WaitData *d = data;
2001
2002         assert(bus);
2003         assert(m);
2004         assert(d);
2005
2006         log_debug("Got D-Bus request: %s.%s() on %s",
2007                   sd_bus_message_get_interface(m),
2008                   sd_bus_message_get_member(m),
2009                   sd_bus_message_get_path(m));
2010
2011         if (sd_bus_message_is_signal(m, "org.freedesktop.DBus.Local", "Disconnected")) {
2012                 log_error("Warning! D-Bus connection terminated.");
2013                 sd_bus_close(bus);
2014         } else if (sd_bus_message_is_signal(m, "org.freedesktop.systemd1.Manager", "JobRemoved")) {
2015                 uint32_t id;
2016                 const char *path, *result, *unit;
2017                 char *ret;
2018                 int r;
2019
2020                 r = sd_bus_message_read(m, "uoss", &id, &path, &unit, &result);
2021                 if (r >= 0) {
2022                         ret = set_remove(d->set, (char*) path);
2023                         if (!ret)
2024                                 return 0;
2025
2026                         free(ret);
2027
2028                         if (!isempty(result))
2029                                 d->result = strdup(result);
2030
2031                         if (!isempty(unit))
2032                                 d->name = strdup(unit);
2033
2034                         return 0;
2035                 }
2036 #ifndef NOLEGACY
2037                 r = sd_bus_message_read(m, "uos", &id, &path, &result);
2038                 if (r >= 0) {
2039                         ret = set_remove(d->set, (char*) path);
2040                         if (!ret)
2041                                 return 0;
2042
2043                         free(ret);
2044
2045                         if (*result)
2046                                 d->result = strdup(result);
2047
2048                         return 0;
2049                 }
2050 #endif
2051
2052                 bus_log_parse_error(r);
2053         }
2054
2055         return 0;
2056 }
2057
2058 static int enable_wait_for_jobs(sd_bus *bus) {
2059         int r;
2060
2061         assert(bus);
2062
2063         r = sd_bus_add_match(
2064                         bus,
2065                         "type='signal',"
2066                         "sender='org.freedesktop.systemd1',"
2067                         "interface='org.freedesktop.systemd1.Manager',"
2068                         "member='JobRemoved',"
2069                         "path='/org/freedesktop/systemd1'",
2070                         NULL, NULL);
2071         if (r < 0) {
2072                 log_error("Failed to add match");
2073                 return -EIO;
2074         }
2075
2076         /* This is slightly dirty, since we don't undo the match registrations. */
2077         return 0;
2078 }
2079
2080 static int bus_process_wait(sd_bus *bus) {
2081         int r;
2082
2083         for (;;) {
2084                 r = sd_bus_process(bus, NULL);
2085                 if (r < 0)
2086                         return r;
2087                 if (r > 0)
2088                         return 0;
2089                 r = sd_bus_wait(bus, (uint64_t) -1);
2090                 if (r < 0)
2091                         return r;
2092         }
2093 }
2094
2095 static int check_wait_response(WaitData *d) {
2096         int r = 0;
2097
2098         assert(d->result);
2099
2100         if (!arg_quiet) {
2101                 if (streq(d->result, "timeout"))
2102                         log_error("Job for %s timed out.", strna(d->name));
2103                 else if (streq(d->result, "canceled"))
2104                         log_error("Job for %s canceled.", strna(d->name));
2105                 else if (streq(d->result, "dependency"))
2106                         log_error("A dependency job for %s failed. See 'journalctl -xn' for details.", strna(d->name));
2107                 else if (!streq(d->result, "done") && !streq(d->result, "skipped"))
2108                         log_error("Job for %s failed. See 'systemctl status %s' and 'journalctl -xn' for details.", strna(d->name), strna(d->name));
2109         }
2110
2111         if (streq(d->result, "timeout"))
2112                 r = -ETIME;
2113         else if (streq(d->result, "canceled"))
2114                 r = -ECANCELED;
2115         else if (streq(d->result, "dependency"))
2116                 r = -EIO;
2117         else if (!streq(d->result, "done") && !streq(d->result, "skipped"))
2118                 r = -EIO;
2119
2120         return r;
2121 }
2122
2123 static int wait_for_jobs(sd_bus *bus, Set *s) {
2124         WaitData d = { .set = s };
2125         int r = 0, q;
2126
2127         assert(bus);
2128         assert(s);
2129
2130         q = sd_bus_add_filter(bus, wait_filter, &d);
2131         if (q < 0)
2132                 return log_oom();
2133
2134         while (!set_isempty(s)) {
2135                 q = bus_process_wait(bus);
2136                 if (q < 0) {
2137                         log_error("Failed to wait for response: %s", strerror(-r));
2138                         return q;
2139                 }
2140
2141                 if (d.result) {
2142                         q = check_wait_response(&d);
2143                         /* Return the first error as it is most likely to be
2144                          * meaningful. */
2145                         if (q < 0 && r == 0)
2146                                 r = q;
2147                         log_debug("Got result %s/%s for job %s",
2148                                   strna(d.result), strerror(-q), strna(d.name));
2149                 }
2150
2151                 free(d.name);
2152                 d.name = NULL;
2153
2154                 free(d.result);
2155                 d.result = NULL;
2156         }
2157
2158         q = sd_bus_remove_filter(bus, wait_filter, &d);
2159         if (q < 0 && r == 0)
2160                 r = q;
2161
2162         return r;
2163 }
2164
2165 static int check_one_unit(sd_bus *bus, const char *name, const char *good_states, bool quiet) {
2166         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2167         _cleanup_free_ char *n = NULL, *state = NULL;
2168         const char *path;
2169         int r;
2170
2171         assert(name);
2172
2173         n = unit_name_mangle(name, MANGLE_NOGLOB);
2174         if (!n)
2175                 return log_oom();
2176
2177         /* We don't use unit_dbus_path_from_name() directly since we
2178          * don't want to load the unit if it isn't loaded. */
2179
2180         r = sd_bus_call_method(
2181                         bus,
2182                         "org.freedesktop.systemd1",
2183                         "/org/freedesktop/systemd1",
2184                         "org.freedesktop.systemd1.Manager",
2185                         "GetUnit",
2186                         NULL,
2187                         &reply,
2188                         "s", n);
2189         if (r < 0) {
2190                 if (!quiet)
2191                         puts("unknown");
2192                 return 0;
2193         }
2194
2195         r = sd_bus_message_read(reply, "o", &path);
2196         if (r < 0)
2197                 return bus_log_parse_error(r);
2198
2199         r = sd_bus_get_property_string(
2200                         bus,
2201                         "org.freedesktop.systemd1",
2202                         path,
2203                         "org.freedesktop.systemd1.Unit",
2204                         "ActiveState",
2205                         NULL,
2206                         &state);
2207         if (r < 0) {
2208                 if (!quiet)
2209                         puts("unknown");
2210                 return 0;
2211         }
2212
2213         if (!quiet)
2214                 puts(state);
2215
2216         return nulstr_contains(good_states, state);
2217 }
2218
2219 static int check_triggering_units(
2220                 sd_bus *bus,
2221                 const char *name) {
2222
2223         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2224         _cleanup_free_ char *path = NULL, *n = NULL, *state = NULL;
2225         _cleanup_strv_free_ char **triggered_by = NULL;
2226         bool print_warning_label = true;
2227         char **i;
2228         int r;
2229
2230         n = unit_name_mangle(name, MANGLE_NOGLOB);
2231         if (!n)
2232                 return log_oom();
2233
2234         path = unit_dbus_path_from_name(n);
2235         if (!path)
2236                 return log_oom();
2237
2238         r = sd_bus_get_property_string(
2239                         bus,
2240                         "org.freedesktop.systemd1",
2241                         path,
2242                         "org.freedesktop.systemd1.Unit",
2243                         "LoadState",
2244                         &error,
2245                         &state);
2246         if (r < 0) {
2247                 log_error("Failed to get load state of %s: %s", n, bus_error_message(&error, r));
2248                 return r;
2249         }
2250
2251         if (streq(state, "masked"))
2252                 return 0;
2253
2254         r = sd_bus_get_property_strv(
2255                         bus,
2256                         "org.freedesktop.systemd1",
2257                         path,
2258                         "org.freedesktop.systemd1.Unit",
2259                         "TriggeredBy",
2260                         &error,
2261                         &triggered_by);
2262         if (r < 0) {
2263                 log_error("Failed to get triggered by array of %s: %s", n, bus_error_message(&error, r));
2264                 return r;
2265         }
2266
2267         STRV_FOREACH(i, triggered_by) {
2268                 r = check_one_unit(bus, *i, "active\0reloading\0", true);
2269                 if (r < 0) {
2270                         log_error("Failed to check unit: %s", strerror(-r));
2271                         return r;
2272                 }
2273
2274                 if (r == 0)
2275                         continue;
2276
2277                 if (print_warning_label) {
2278                         log_warning("Warning: Stopping %s, but it can still be activated by:", n);
2279                         print_warning_label = false;
2280                 }
2281
2282                 log_warning("  %s", *i);
2283         }
2284
2285         return 0;
2286 }
2287
2288 static const char *verb_to_method(const char *verb) {
2289        uint i;
2290
2291        for (i = 0; i < ELEMENTSOF(unit_actions); i++)
2292                 if (streq_ptr(unit_actions[i].verb, verb))
2293                         return unit_actions[i].method;
2294
2295        return "StartUnit";
2296 }
2297
2298 static const char *method_to_verb(const char *method) {
2299        uint i;
2300
2301        for (i = 0; i < ELEMENTSOF(unit_actions); i++)
2302                 if (streq_ptr(unit_actions[i].method, method))
2303                         return unit_actions[i].verb;
2304
2305        return "n/a";
2306 }
2307
2308 static int start_unit_one(
2309                 sd_bus *bus,
2310                 const char *method,
2311                 const char *name,
2312                 const char *mode,
2313                 sd_bus_error *error,
2314                 Set *s) {
2315
2316         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2317         const char *path;
2318         int r;
2319
2320         assert(method);
2321         assert(name);
2322         assert(mode);
2323         assert(error);
2324
2325         log_debug("Calling manager for %s on %s, %s", method, name, mode);
2326         r = sd_bus_call_method(
2327                         bus,
2328                         "org.freedesktop.systemd1",
2329                         "/org/freedesktop/systemd1",
2330                         "org.freedesktop.systemd1.Manager",
2331                         method,
2332                         error,
2333                         &reply,
2334                         "ss", name, mode);
2335         if (r < 0) {
2336                 const char *verb;
2337
2338                 if (r == -ENOENT && arg_action != ACTION_SYSTEMCTL)
2339                         /* There's always a fallback possible for
2340                          * legacy actions. */
2341                         return -EADDRNOTAVAIL;
2342
2343                 verb = method_to_verb(method);
2344
2345                 log_error("Failed to %s %s: %s", verb, name, bus_error_message(error, r));
2346                 return r;
2347         }
2348
2349         r = sd_bus_message_read(reply, "o", &path);
2350         if (r < 0)
2351                 return bus_log_parse_error(r);
2352
2353         if (need_daemon_reload(bus, name) > 0)
2354                 log_warning("Warning: Unit file of %s changed on disk, 'systemctl%s daemon-reload' recommended.",
2355                             name, arg_scope == UNIT_FILE_SYSTEM ? "" : " --user");
2356
2357         if (s) {
2358                 char *p;
2359
2360                 p = strdup(path);
2361                 if (!p)
2362                         return log_oom();
2363
2364                 log_debug("Adding %s to the set", p);
2365                 r = set_consume(s, p);
2366                 if (r < 0)
2367                         return log_oom();
2368         }
2369
2370         return 0;
2371 }
2372
2373 static int expand_names(sd_bus *bus, char **names, const char* suffix, char ***ret) {
2374
2375         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2376         _cleanup_strv_free_ char **mangled = NULL, **globs = NULL;
2377         char **name;
2378         int r = 0, i;
2379
2380         STRV_FOREACH(name, names) {
2381                 char *t;
2382
2383                 if (suffix)
2384                         t = unit_name_mangle_with_suffix(*name, MANGLE_GLOB, suffix);
2385                 else
2386                         t = unit_name_mangle(*name, MANGLE_GLOB);
2387                 if (!t)
2388                         return log_oom();
2389
2390                 if (string_is_glob(t))
2391                         r = strv_consume(&globs, t);
2392                 else
2393                         r = strv_consume(&mangled, t);
2394                 if (r < 0)
2395                         return log_oom();
2396         }
2397
2398         /* Query the manager only if any of the names are a glob, since
2399          * this is fairly expensive */
2400         if (!strv_isempty(globs)) {
2401                 _cleanup_free_ UnitInfo *unit_infos = NULL;
2402
2403                 r = get_unit_list(bus, &reply, &unit_infos, globs);
2404                 if (r < 0)
2405                         return r;
2406
2407                 for (i = 0; i < r; i++)
2408                         if (strv_extend(&mangled, unit_infos[i].id) < 0)
2409                                 return log_oom();
2410         }
2411
2412         *ret = mangled;
2413         mangled = NULL; /* do not free */
2414         return 0;
2415 }
2416
2417 static const struct {
2418         const char *target;
2419         const char *verb;
2420         const char *mode;
2421 } action_table[_ACTION_MAX] = {
2422         [ACTION_HALT]         = { SPECIAL_HALT_TARGET,         "halt",         "replace-irreversibly" },
2423         [ACTION_POWEROFF]     = { SPECIAL_POWEROFF_TARGET,     "poweroff",     "replace-irreversibly" },
2424         [ACTION_REBOOT]       = { SPECIAL_REBOOT_TARGET,       "reboot",       "replace-irreversibly" },
2425         [ACTION_KEXEC]        = { SPECIAL_KEXEC_TARGET,        "kexec",        "replace-irreversibly" },
2426         [ACTION_RUNLEVEL2]    = { SPECIAL_RUNLEVEL2_TARGET,    NULL,           "isolate" },
2427         [ACTION_RUNLEVEL3]    = { SPECIAL_RUNLEVEL3_TARGET,    NULL,           "isolate" },
2428         [ACTION_RUNLEVEL4]    = { SPECIAL_RUNLEVEL4_TARGET,    NULL,           "isolate" },
2429         [ACTION_RUNLEVEL5]    = { SPECIAL_RUNLEVEL5_TARGET,    NULL,           "isolate" },
2430         [ACTION_RESCUE]       = { SPECIAL_RESCUE_TARGET,       "rescue",       "isolate" },
2431         [ACTION_EMERGENCY]    = { SPECIAL_EMERGENCY_TARGET,    "emergency",    "isolate" },
2432         [ACTION_DEFAULT]      = { SPECIAL_DEFAULT_TARGET,      "default",      "isolate" },
2433         [ACTION_EXIT]         = { SPECIAL_EXIT_TARGET,         "exit",         "replace-irreversibly" },
2434         [ACTION_SUSPEND]      = { SPECIAL_SUSPEND_TARGET,      "suspend",      "replace-irreversibly" },
2435         [ACTION_HIBERNATE]    = { SPECIAL_HIBERNATE_TARGET,    "hibernate",    "replace-irreversibly" },
2436         [ACTION_HYBRID_SLEEP] = { SPECIAL_HYBRID_SLEEP_TARGET, "hybrid-sleep", "replace-irreversibly" },
2437 };
2438
2439 static enum action verb_to_action(const char *verb) {
2440         enum action i;
2441
2442         for (i = _ACTION_INVALID; i < _ACTION_MAX; i++)
2443                 if (streq_ptr(action_table[i].verb, verb))
2444                         return i;
2445
2446         return _ACTION_INVALID;
2447 }
2448
2449 static int start_unit(sd_bus *bus, char **args) {
2450         _cleanup_set_free_free_ Set *s = NULL;
2451         _cleanup_strv_free_ char **names = NULL;
2452         const char *method, *mode, *one_name;
2453         char **name;
2454         int r = 0;
2455
2456         assert(bus);
2457
2458         ask_password_agent_open_if_enabled();
2459
2460         if (arg_action == ACTION_SYSTEMCTL) {
2461                 enum action action;
2462                 method = verb_to_method(args[0]);
2463                 action = verb_to_action(args[0]);
2464
2465                 mode = streq(args[0], "isolate") ? "isolate" :
2466                        action_table[action].mode ?: arg_job_mode;
2467
2468                 one_name = action_table[action].target;
2469         } else {
2470                 assert(arg_action < ELEMENTSOF(action_table));
2471                 assert(action_table[arg_action].target);
2472
2473                 method = "StartUnit";
2474
2475                 mode = action_table[arg_action].mode;
2476                 one_name = action_table[arg_action].target;
2477         }
2478
2479         if (one_name)
2480                 names = strv_new(one_name, NULL);
2481         else {
2482                 r = expand_names(bus, args + 1, NULL, &names);
2483                 if (r < 0)
2484                         log_error("Failed to expand names: %s", strerror(-r));
2485         }
2486
2487         if (!arg_no_block) {
2488                 r = enable_wait_for_jobs(bus);
2489                 if (r < 0) {
2490                         log_error("Could not watch jobs: %s", strerror(-r));
2491                         return r;
2492                 }
2493
2494                 s = set_new(string_hash_func, string_compare_func);
2495                 if (!s)
2496                         return log_oom();
2497         }
2498
2499         STRV_FOREACH(name, names) {
2500                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2501                 int q;
2502
2503                 q = start_unit_one(bus, method, *name, mode, &error, s);
2504                 if (r >= 0 && q < 0)
2505                         r = translate_bus_error_to_exit_status(q, &error);
2506         }
2507
2508         if (!arg_no_block) {
2509                 int q;
2510
2511                 q = wait_for_jobs(bus, s);
2512                 if (q < 0)
2513                         return q;
2514
2515                 /* When stopping units, warn if they can still be triggered by
2516                  * another active unit (socket, path, timer) */
2517                 if (!arg_quiet && streq(method, "StopUnit"))
2518                         STRV_FOREACH(name, names)
2519                                 check_triggering_units(bus, *name);
2520         }
2521
2522         return r;
2523 }
2524
2525 /* Ask systemd-logind, which might grant access to unprivileged users
2526  * through PolicyKit */
2527 static int reboot_with_logind(sd_bus *bus, enum action a) {
2528 #ifdef HAVE_LOGIND
2529         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2530         const char *method;
2531         int r;
2532
2533         if (!bus)
2534                 return -EIO;
2535
2536         polkit_agent_open_if_enabled();
2537
2538         switch (a) {
2539
2540         case ACTION_REBOOT:
2541                 method = "Reboot";
2542                 break;
2543
2544         case ACTION_POWEROFF:
2545                 method = "PowerOff";
2546                 break;
2547
2548         case ACTION_SUSPEND:
2549                 method = "Suspend";
2550                 break;
2551
2552         case ACTION_HIBERNATE:
2553                 method = "Hibernate";
2554                 break;
2555
2556         case ACTION_HYBRID_SLEEP:
2557                 method = "HybridSleep";
2558                 break;
2559
2560         default:
2561                 return -EINVAL;
2562         }
2563
2564         r = sd_bus_call_method(
2565                         bus,
2566                         "org.freedesktop.login1",
2567                         "/org/freedesktop/login1",
2568                         "org.freedesktop.login1.Manager",
2569                         method,
2570                         &error,
2571                         NULL,
2572                         "b", true);
2573         if (r < 0)
2574                 log_error("Failed to execute operation: %s", bus_error_message(&error, r));
2575
2576         return r;
2577 #else
2578         return -ENOSYS;
2579 #endif
2580 }
2581
2582 static int check_inhibitors(sd_bus *bus, enum action a) {
2583 #ifdef HAVE_LOGIND
2584         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2585         _cleanup_strv_free_ char **sessions = NULL;
2586         const char *what, *who, *why, *mode;
2587         uint32_t uid, pid;
2588         unsigned c = 0;
2589         char **s;
2590         int r;
2591
2592         if (!bus)
2593                 return 0;
2594
2595         if (arg_ignore_inhibitors || arg_force > 0)
2596                 return 0;
2597
2598         if (arg_when > 0)
2599                 return 0;
2600
2601         if (geteuid() == 0)
2602                 return 0;
2603
2604         if (!on_tty())
2605                 return 0;
2606
2607         r = sd_bus_call_method(
2608                         bus,
2609                         "org.freedesktop.login1",
2610                         "/org/freedesktop/login1",
2611                         "org.freedesktop.login1.Manager",
2612                         "ListInhibitors",
2613                         NULL,
2614                         &reply,
2615                         NULL);
2616         if (r < 0)
2617                 /* If logind is not around, then there are no inhibitors... */
2618                 return 0;
2619
2620         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssuu)");
2621         if (r < 0)
2622                 return bus_log_parse_error(r);
2623
2624         while ((r = sd_bus_message_read(reply, "(ssssuu)", &what, &who, &why, &mode, &uid, &pid)) > 0) {
2625                 _cleanup_free_ char *comm = NULL, *user = NULL;
2626                 _cleanup_strv_free_ char **sv = NULL;
2627
2628                 if (!streq(mode, "block"))
2629                         continue;
2630
2631                 sv = strv_split(what, ":");
2632                 if (!sv)
2633                         return log_oom();
2634
2635                 if (!strv_contains(sv,
2636                                   a == ACTION_HALT ||
2637                                   a == ACTION_POWEROFF ||
2638                                   a == ACTION_REBOOT ||
2639                                   a == ACTION_KEXEC ? "shutdown" : "sleep"))
2640                         continue;
2641
2642                 get_process_comm(pid, &comm);
2643                 user = uid_to_name(uid);
2644
2645                 log_warning("Operation inhibited by \"%s\" (PID %lu \"%s\", user %s), reason is \"%s\".",
2646                             who, (unsigned long) pid, strna(comm), strna(user), why);
2647
2648                 c++;
2649         }
2650         if (r < 0)
2651                 return bus_log_parse_error(r);
2652
2653         r = sd_bus_message_exit_container(reply);
2654         if (r < 0)
2655                 return bus_log_parse_error(r);
2656
2657         /* Check for current sessions */
2658         sd_get_sessions(&sessions);
2659         STRV_FOREACH(s, sessions) {
2660                 _cleanup_free_ char *type = NULL, *tty = NULL, *seat = NULL, *user = NULL, *service = NULL, *class = NULL;
2661
2662                 if (sd_session_get_uid(*s, &uid) < 0 || uid == getuid())
2663                         continue;
2664
2665                 if (sd_session_get_class(*s, &class) < 0 || !streq(class, "user"))
2666                         continue;
2667
2668                 if (sd_session_get_type(*s, &type) < 0 || (!streq(type, "x11") && !streq(type, "tty")))
2669                         continue;
2670
2671                 sd_session_get_tty(*s, &tty);
2672                 sd_session_get_seat(*s, &seat);
2673                 sd_session_get_service(*s, &service);
2674                 user = uid_to_name(uid);
2675
2676                 log_warning("User %s is logged in on %s.", strna(user), isempty(tty) ? (isempty(seat) ? strna(service) : seat) : tty);
2677                 c++;
2678         }
2679
2680         if (c <= 0)
2681                 return 0;
2682
2683         log_error("Please retry operation after closing inhibitors and logging out other users.\nAlternatively, ignore inhibitors and users with 'systemctl %s -i'.",
2684                   action_table[a].verb);
2685
2686         return -EPERM;
2687 #else
2688         return 0;
2689 #endif
2690 }
2691
2692 static int start_special(sd_bus *bus, char **args) {
2693         enum action a;
2694         int r;
2695
2696         assert(args);
2697
2698         a = verb_to_action(args[0]);
2699
2700         r = check_inhibitors(bus, a);
2701         if (r < 0)
2702                 return r;
2703
2704         if (arg_force >= 2 && geteuid() != 0) {
2705                 log_error("Must be root.");
2706                 return -EPERM;
2707         }
2708
2709         if (arg_force >= 2 &&
2710             (a == ACTION_HALT ||
2711              a == ACTION_POWEROFF ||
2712              a == ACTION_REBOOT))
2713                 return halt_now(a);
2714
2715         if (arg_force >= 1 &&
2716             (a == ACTION_HALT ||
2717              a == ACTION_POWEROFF ||
2718              a == ACTION_REBOOT ||
2719              a == ACTION_KEXEC ||
2720              a == ACTION_EXIT))
2721                 return daemon_reload(bus, args);
2722
2723         /* first try logind, to allow authentication with polkit */
2724         if (geteuid() != 0 &&
2725             (a == ACTION_POWEROFF ||
2726              a == ACTION_REBOOT ||
2727              a == ACTION_SUSPEND ||
2728              a == ACTION_HIBERNATE ||
2729              a == ACTION_HYBRID_SLEEP)) {
2730                 r = reboot_with_logind(bus, a);
2731                 if (r >= 0)
2732                         return r;
2733         }
2734
2735         r = start_unit(bus, args);
2736         if (r == EXIT_SUCCESS)
2737                 warn_wall(a);
2738
2739         return r;
2740 }
2741
2742 static int check_unit_generic(sd_bus *bus, int code, const char *good_states, char **args) {
2743         _cleanup_strv_free_ char **names = NULL;
2744         char **name;
2745         int r;
2746
2747         assert(bus);
2748         assert(args);
2749
2750         r = expand_names(bus, args, NULL, &names);
2751         if (r < 0) {
2752                 log_error("Failed to expand names: %s", strerror(-r));
2753                 return r;
2754         }
2755
2756         STRV_FOREACH(name, names) {
2757                 int state;
2758
2759                 state = check_one_unit(bus, *name, good_states, arg_quiet);
2760                 if (state < 0)
2761                         return state;
2762                 if (state == 0)
2763                         r = code;
2764         }
2765
2766         return r;
2767 }
2768
2769 static int check_unit_active(sd_bus *bus, char **args) {
2770         /* According to LSB: 3, "program is not running" */
2771         return check_unit_generic(bus, 3, "active\0reloading\0", args + 1);
2772 }
2773
2774 static int check_unit_failed(sd_bus *bus, char **args) {
2775         return check_unit_generic(bus, 1, "failed\0", args + 1);
2776 }
2777
2778 static int kill_unit(sd_bus *bus, char **args) {
2779         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2780         _cleanup_strv_free_ char **names = NULL;
2781         char **name;
2782         int r, q;
2783
2784         assert(bus);
2785         assert(args);
2786
2787         if (!arg_kill_who)
2788                 arg_kill_who = "all";
2789
2790         r = expand_names(bus, args + 1, NULL, &names);
2791         if (r < 0)
2792                 log_error("Failed to expand names: %s", strerror(-r));
2793
2794         STRV_FOREACH(name, names) {
2795                 q = sd_bus_call_method(
2796                                 bus,
2797                                 "org.freedesktop.systemd1",
2798                                 "/org/freedesktop/systemd1",
2799                                 "org.freedesktop.systemd1.Manager",
2800                                 "KillUnit",
2801                                 &error,
2802                                 NULL,
2803                                 "ssi", *names, arg_kill_who, arg_signal);
2804                 if (q < 0) {
2805                         log_error("Failed to kill unit %s: %s",
2806                                   *names, bus_error_message(&error, r));
2807                         if (r == 0)
2808                                 r = q;
2809                 }
2810         }
2811
2812         return r;
2813 }
2814
2815 typedef struct ExecStatusInfo {
2816         char *name;
2817
2818         char *path;
2819         char **argv;
2820
2821         bool ignore;
2822
2823         usec_t start_timestamp;
2824         usec_t exit_timestamp;
2825         pid_t pid;
2826         int code;
2827         int status;
2828
2829         LIST_FIELDS(struct ExecStatusInfo, exec);
2830 } ExecStatusInfo;
2831
2832 static void exec_status_info_free(ExecStatusInfo *i) {
2833         assert(i);
2834
2835         free(i->name);
2836         free(i->path);
2837         strv_free(i->argv);
2838         free(i);
2839 }
2840
2841 static int exec_status_info_deserialize(sd_bus_message *m, ExecStatusInfo *i) {
2842         uint64_t start_timestamp, exit_timestamp, start_timestamp_monotonic, exit_timestamp_monotonic;
2843         const char *path;
2844         uint32_t pid;
2845         int32_t code, status;
2846         int ignore, r;
2847
2848         assert(m);
2849         assert(i);
2850
2851         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_STRUCT, "sasbttttuii");
2852         if (r < 0)
2853                 return bus_log_parse_error(r);
2854         else if (r == 0)
2855                 return 0;
2856
2857         r = sd_bus_message_read(m, "s", &path);
2858         if (r < 0)
2859                 return bus_log_parse_error(r);
2860
2861         i->path = strdup(path);
2862         if (!i->path)
2863                 return log_oom();
2864
2865         r = sd_bus_message_read_strv(m, &i->argv);
2866         if (r < 0)
2867                 return bus_log_parse_error(r);
2868
2869         r = sd_bus_message_read(m,
2870                                 "bttttuii",
2871                                 &ignore,
2872                                 &start_timestamp, &start_timestamp_monotonic,
2873                                 &exit_timestamp, &exit_timestamp_monotonic,
2874                                 &pid,
2875                                 &code, &status);
2876         if (r < 0)
2877                 return bus_log_parse_error(r);
2878
2879         i->ignore = ignore;
2880         i->start_timestamp = (usec_t) start_timestamp;
2881         i->exit_timestamp = (usec_t) exit_timestamp;
2882         i->pid = (pid_t) pid;
2883         i->code = code;
2884         i->status = status;
2885
2886         r = sd_bus_message_exit_container(m);
2887         if (r < 0)
2888                 return bus_log_parse_error(r);
2889
2890         return 1;
2891 }
2892
2893 typedef struct UnitStatusInfo {
2894         const char *id;
2895         const char *load_state;
2896         const char *active_state;
2897         const char *sub_state;
2898         const char *unit_file_state;
2899
2900         const char *description;
2901         const char *following;
2902
2903         char **documentation;
2904
2905         const char *fragment_path;
2906         const char *source_path;
2907         const char *control_group;
2908
2909         char **dropin_paths;
2910
2911         const char *load_error;
2912         const char *result;
2913
2914         usec_t inactive_exit_timestamp;
2915         usec_t inactive_exit_timestamp_monotonic;
2916         usec_t active_enter_timestamp;
2917         usec_t active_exit_timestamp;
2918         usec_t inactive_enter_timestamp;
2919
2920         bool need_daemon_reload;
2921
2922         /* Service */
2923         pid_t main_pid;
2924         pid_t control_pid;
2925         const char *status_text;
2926         const char *pid_file;
2927         bool running:1;
2928
2929         usec_t start_timestamp;
2930         usec_t exit_timestamp;
2931
2932         int exit_code, exit_status;
2933
2934         usec_t condition_timestamp;
2935         bool condition_result;
2936         bool failed_condition_trigger;
2937         bool failed_condition_negate;
2938         const char *failed_condition;
2939         const char *failed_condition_param;
2940
2941         /* Socket */
2942         unsigned n_accepted;
2943         unsigned n_connections;
2944         bool accept;
2945
2946         /* Pairs of type, path */
2947         char **listen;
2948
2949         /* Device */
2950         const char *sysfs_path;
2951
2952         /* Mount, Automount */
2953         const char *where;
2954
2955         /* Swap */
2956         const char *what;
2957
2958         LIST_HEAD(ExecStatusInfo, exec);
2959 } UnitStatusInfo;
2960
2961 static void print_status_info(
2962                 UnitStatusInfo *i,
2963                 bool *ellipsized) {
2964
2965         ExecStatusInfo *p;
2966         const char *active_on, *active_off, *on, *off, *ss;
2967         usec_t timestamp;
2968         char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], *s1;
2969         char since2[FORMAT_TIMESTAMP_MAX], *s2;
2970         const char *path;
2971         int flags =
2972                 arg_all * OUTPUT_SHOW_ALL |
2973                 (!on_tty() || pager_have()) * OUTPUT_FULL_WIDTH |
2974                 on_tty() * OUTPUT_COLOR |
2975                 !arg_quiet * OUTPUT_WARN_CUTOFF |
2976                 arg_full * OUTPUT_FULL_WIDTH;
2977         char **t, **t2;
2978
2979         assert(i);
2980
2981         /* This shows pretty information about a unit. See
2982          * print_property() for a low-level property printer */
2983
2984         if (streq_ptr(i->active_state, "failed")) {
2985                 active_on = ansi_highlight_red();
2986                 active_off = ansi_highlight_off();
2987         } else if (streq_ptr(i->active_state, "active") || streq_ptr(i->active_state, "reloading")) {
2988                 active_on = ansi_highlight_green();
2989                 active_off = ansi_highlight_off();
2990         } else
2991                 active_on = active_off = "";
2992
2993         printf("%s%s%s%s", active_on, draw_special_char(DRAW_BLACK_CIRCLE), active_off, strna(i->id));
2994
2995         if (i->description && !streq_ptr(i->id, i->description))
2996                 printf(" - %s", i->description);
2997
2998         printf("\n");
2999
3000         if (i->following)
3001                 printf("   Follow: unit currently follows state of %s\n", i->following);
3002
3003         if (streq_ptr(i->load_state, "error")) {
3004                 on = ansi_highlight_red();
3005                 off = ansi_highlight_off();
3006         } else
3007                 on = off = "";
3008
3009         path = i->source_path ? i->source_path : i->fragment_path;
3010
3011         if (i->load_error)
3012                 printf("   Loaded: %s%s%s (Reason: %s)\n",
3013                        on, strna(i->load_state), off, i->load_error);
3014         else if (path && i->unit_file_state)
3015                 printf("   Loaded: %s%s%s (%s; %s)\n",
3016                        on, strna(i->load_state), off, path, i->unit_file_state);
3017         else if (path)
3018                 printf("   Loaded: %s%s%s (%s)\n",
3019                        on, strna(i->load_state), off, path);
3020         else
3021                 printf("   Loaded: %s%s%s\n",
3022                        on, strna(i->load_state), off);
3023
3024         if (!strv_isempty(i->dropin_paths)) {
3025                 _cleanup_free_ char *dir = NULL;
3026                 bool last = false;
3027                 char ** dropin;
3028
3029                 STRV_FOREACH(dropin, i->dropin_paths) {
3030                         if (! dir || last) {
3031                                 printf(dir ? "        " : "  Drop-In: ");
3032
3033                                 free(dir);
3034                                 dir = NULL;
3035
3036                                 if (path_get_parent(*dropin, &dir) < 0) {
3037                                         log_oom();
3038                                         return;
3039                                 }
3040
3041                                 printf("%s\n           %s", dir,
3042                                        draw_special_char(DRAW_TREE_RIGHT));
3043                         }
3044
3045                         last = ! (*(dropin + 1) && startswith(*(dropin + 1), dir));
3046
3047                         printf("%s%s", basename(*dropin), last ? "\n" : ", ");
3048                 }
3049         }
3050
3051         ss = streq_ptr(i->active_state, i->sub_state) ? NULL : i->sub_state;
3052         if (ss)
3053                 printf("   Active: %s%s (%s)%s",
3054                        active_on, strna(i->active_state), ss, active_off);
3055         else
3056                 printf("   Active: %s%s%s",
3057                        active_on, strna(i->active_state), active_off);
3058
3059         if (!isempty(i->result) && !streq(i->result, "success"))
3060                 printf(" (Result: %s)", i->result);
3061
3062         timestamp = (streq_ptr(i->active_state, "active")      ||
3063                      streq_ptr(i->active_state, "reloading"))   ? i->active_enter_timestamp :
3064                     (streq_ptr(i->active_state, "inactive")    ||
3065                      streq_ptr(i->active_state, "failed"))      ? i->inactive_enter_timestamp :
3066                     streq_ptr(i->active_state, "activating")    ? i->inactive_exit_timestamp :
3067                                                                   i->active_exit_timestamp;
3068
3069         s1 = format_timestamp_relative(since1, sizeof(since1), timestamp);
3070         s2 = format_timestamp(since2, sizeof(since2), timestamp);
3071
3072         if (s1)
3073                 printf(" since %s; %s\n", s2, s1);
3074         else if (s2)
3075                 printf(" since %s\n", s2);
3076         else
3077                 printf("\n");
3078
3079         if (!i->condition_result && i->condition_timestamp > 0) {
3080                 s1 = format_timestamp_relative(since1, sizeof(since1), i->condition_timestamp);
3081                 s2 = format_timestamp(since2, sizeof(since2), i->condition_timestamp);
3082
3083                 printf("           start condition failed at %s%s%s\n",
3084                        s2, s1 ? "; " : "", s1 ? s1 : "");
3085                 if (i->failed_condition_trigger)
3086                         printf("           none of the trigger conditions were met\n");
3087                 else if (i->failed_condition)
3088                         printf("           %s=%s%s was not met\n",
3089                                i->failed_condition,
3090                                i->failed_condition_negate ? "!" : "",
3091                                i->failed_condition_param);
3092         }
3093
3094         if (i->sysfs_path)
3095                 printf("   Device: %s\n", i->sysfs_path);
3096         if (i->where)
3097                 printf("    Where: %s\n", i->where);
3098         if (i->what)
3099                 printf("     What: %s\n", i->what);
3100
3101         STRV_FOREACH(t, i->documentation)
3102                 printf(" %*s %s\n", 9, t == i->documentation ? "Docs:" : "", *t);
3103
3104         STRV_FOREACH_PAIR(t, t2, i->listen)
3105                 printf(" %*s %s (%s)\n", 9, t == i->listen ? "Listen:" : "", *t2, *t);
3106
3107         if (i->accept)
3108                 printf(" Accepted: %u; Connected: %u\n", i->n_accepted, i->n_connections);
3109
3110         LIST_FOREACH(exec, p, i->exec) {
3111                 _cleanup_free_ char *argv = NULL;
3112                 bool good;
3113
3114                 /* Only show exited processes here */
3115                 if (p->code == 0)
3116                         continue;
3117
3118                 argv = strv_join(p->argv, " ");
3119                 printf("  Process: %u %s=%s ", p->pid, p->name, strna(argv));
3120
3121                 good = is_clean_exit_lsb(p->code, p->status, NULL);
3122                 if (!good) {
3123                         on = ansi_highlight_red();
3124                         off = ansi_highlight_off();
3125                 } else
3126                         on = off = "";
3127
3128                 printf("%s(code=%s, ", on, sigchld_code_to_string(p->code));
3129
3130                 if (p->code == CLD_EXITED) {
3131                         const char *c;
3132
3133                         printf("status=%i", p->status);
3134
3135                         c = exit_status_to_string(p->status, EXIT_STATUS_SYSTEMD);
3136                         if (c)
3137                                 printf("/%s", c);
3138
3139                 } else
3140                         printf("signal=%s", signal_to_string(p->status));
3141
3142                 printf(")%s\n", off);
3143
3144                 if (i->main_pid == p->pid &&
3145                     i->start_timestamp == p->start_timestamp &&
3146                     i->exit_timestamp == p->start_timestamp)
3147                         /* Let's not show this twice */
3148                         i->main_pid = 0;
3149
3150                 if (p->pid == i->control_pid)
3151                         i->control_pid = 0;
3152         }
3153
3154         if (i->main_pid > 0 || i->control_pid > 0) {
3155                 if (i->main_pid > 0) {
3156                         printf(" Main PID: %u", (unsigned) i->main_pid);
3157
3158                         if (i->running) {
3159                                 _cleanup_free_ char *comm = NULL;
3160                                 get_process_comm(i->main_pid, &comm);
3161                                 if (comm)
3162                                         printf(" (%s)", comm);
3163                         } else if (i->exit_code > 0) {
3164                                 printf(" (code=%s, ", sigchld_code_to_string(i->exit_code));
3165
3166                                 if (i->exit_code == CLD_EXITED) {
3167                                         const char *c;
3168
3169                                         printf("status=%i", i->exit_status);
3170
3171                                         c = exit_status_to_string(i->exit_status, EXIT_STATUS_SYSTEMD);
3172                                         if (c)
3173                                                 printf("/%s", c);
3174
3175                                 } else
3176                                         printf("signal=%s", signal_to_string(i->exit_status));
3177                                 printf(")");
3178                         }
3179
3180                         if (i->control_pid > 0)
3181                                 printf(";");
3182                 }
3183
3184                 if (i->control_pid > 0) {
3185                         _cleanup_free_ char *c = NULL;
3186
3187                         printf(" %8s: %u", i->main_pid ? "" : " Control", (unsigned) i->control_pid);
3188
3189                         get_process_comm(i->control_pid, &c);
3190                         if (c)
3191                                 printf(" (%s)", c);
3192                 }
3193
3194                 printf("\n");
3195         }
3196
3197         if (i->status_text)
3198                 printf("   Status: \"%s\"\n", i->status_text);
3199
3200         if (i->control_group &&
3201             (i->main_pid > 0 || i->control_pid > 0 ||
3202              ((arg_transport != BUS_TRANSPORT_LOCAL && arg_transport != BUS_TRANSPORT_CONTAINER) || cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, i->control_group, false) == 0))) {
3203                 unsigned c;
3204
3205                 printf("   CGroup: %s\n", i->control_group);
3206
3207                 if (arg_transport == BUS_TRANSPORT_LOCAL || arg_transport == BUS_TRANSPORT_CONTAINER) {
3208                         unsigned k = 0;
3209                         pid_t extra[2];
3210                         static const char prefix[] = "           ";
3211
3212                         c = columns();
3213                         if (c > sizeof(prefix) - 1)
3214                                 c -= sizeof(prefix) - 1;
3215                         else
3216                                 c = 0;
3217
3218                         if (i->main_pid > 0)
3219                                 extra[k++] = i->main_pid;
3220
3221                         if (i->control_pid > 0)
3222                                 extra[k++] = i->control_pid;
3223
3224                         show_cgroup_and_extra(SYSTEMD_CGROUP_CONTROLLER, i->control_group, prefix, c, false, extra, k, flags);
3225                 }
3226         }
3227
3228         if (i->id && arg_transport == BUS_TRANSPORT_LOCAL) {
3229                 show_journal_by_unit(stdout,
3230                                      i->id,
3231                                      arg_output,
3232                                      0,
3233                                      i->inactive_exit_timestamp_monotonic,
3234                                      arg_lines,
3235                                      getuid(),
3236                                      flags | OUTPUT_BEGIN_NEWLINE,
3237                                      arg_scope == UNIT_FILE_SYSTEM,
3238                                      ellipsized);
3239         }
3240
3241         if (i->need_daemon_reload)
3242                 printf("\n%sWarning:%s Unit file changed on disk, 'systemctl %sdaemon-reload' recommended.\n",
3243                        ansi_highlight_red(),
3244                        ansi_highlight_off(),
3245                        arg_scope == UNIT_FILE_SYSTEM ? "" : "--user ");
3246 }
3247
3248 static void show_unit_help(UnitStatusInfo *i) {
3249         char **p;
3250
3251         assert(i);
3252
3253         if (!i->documentation) {
3254                 log_info("Documentation for %s not known.", i->id);
3255                 return;
3256         }
3257
3258         STRV_FOREACH(p, i->documentation) {
3259
3260                 if (startswith(*p, "man:")) {
3261                         const char *args[4] = { "man", NULL, NULL, NULL };
3262                         _cleanup_free_ char *page = NULL, *section = NULL;
3263                         char *e = NULL;
3264                         pid_t pid;
3265                         size_t k;
3266
3267                         k = strlen(*p);
3268
3269                         if ((*p)[k-1] == ')')
3270                                 e = strrchr(*p, '(');
3271
3272                         if (e) {
3273                                 page = strndup((*p) + 4, e - *p - 4);
3274                                 section = strndup(e + 1, *p + k - e - 2);
3275                                 if (!page || !section) {
3276                                         log_oom();
3277                                         return;
3278                                 }
3279
3280                                 args[1] = section;
3281                                 args[2] = page;
3282                         } else
3283                                 args[1] = *p + 4;
3284
3285                         pid = fork();
3286                         if (pid < 0) {
3287                                 log_error("Failed to fork: %m");
3288                                 continue;
3289                         }
3290
3291                         if (pid == 0) {
3292                                 /* Child */
3293                                 execvp(args[0], (char**) args);
3294                                 log_error("Failed to execute man: %m");
3295                                 _exit(EXIT_FAILURE);
3296                         }
3297
3298                         wait_for_terminate(pid, NULL);
3299                 } else
3300                         log_info("Can't show: %s", *p);
3301         }
3302 }
3303
3304 static int status_property(const char *name, sd_bus_message *m, UnitStatusInfo *i, const char *contents) {
3305         int r;
3306
3307         assert(name);
3308         assert(m);
3309         assert(i);
3310
3311         switch (contents[0]) {
3312
3313         case SD_BUS_TYPE_STRING: {
3314                 const char *s;
3315
3316                 r = sd_bus_message_read(m, "s", &s);
3317                 if (r < 0)
3318                         return bus_log_parse_error(r);
3319
3320                 if (!isempty(s)) {
3321                         if (streq(name, "Id"))
3322                                 i->id = s;
3323                         else if (streq(name, "LoadState"))
3324                                 i->load_state = s;
3325                         else if (streq(name, "ActiveState"))
3326                                 i->active_state = s;
3327                         else if (streq(name, "SubState"))
3328                                 i->sub_state = s;
3329                         else if (streq(name, "Description"))
3330                                 i->description = s;
3331                         else if (streq(name, "FragmentPath"))
3332                                 i->fragment_path = s;
3333                         else if (streq(name, "SourcePath"))
3334                                 i->source_path = s;
3335 #ifndef NOLEGACY
3336                         else if (streq(name, "DefaultControlGroup")) {
3337                                 const char *e;
3338                                 e = startswith(s, SYSTEMD_CGROUP_CONTROLLER ":");
3339                                 if (e)
3340                                         i->control_group = e;
3341                         }
3342 #endif
3343                         else if (streq(name, "ControlGroup"))
3344                                 i->control_group = s;
3345                         else if (streq(name, "StatusText"))
3346                                 i->status_text = s;
3347                         else if (streq(name, "PIDFile"))
3348                                 i->pid_file = s;
3349                         else if (streq(name, "SysFSPath"))
3350                                 i->sysfs_path = s;
3351                         else if (streq(name, "Where"))
3352                                 i->where = s;
3353                         else if (streq(name, "What"))
3354                                 i->what = s;
3355                         else if (streq(name, "Following"))
3356                                 i->following = s;
3357                         else if (streq(name, "UnitFileState"))
3358                                 i->unit_file_state = s;
3359                         else if (streq(name, "Result"))
3360                                 i->result = s;
3361                 }
3362
3363                 break;
3364         }
3365
3366         case SD_BUS_TYPE_BOOLEAN: {
3367                 int b;
3368
3369                 r = sd_bus_message_read(m, "b", &b);
3370                 if (r < 0)
3371                         return bus_log_parse_error(r);
3372
3373                 if (streq(name, "Accept"))
3374                         i->accept = b;
3375                 else if (streq(name, "NeedDaemonReload"))
3376                         i->need_daemon_reload = b;
3377                 else if (streq(name, "ConditionResult"))
3378                         i->condition_result = b;
3379
3380                 break;
3381         }
3382
3383         case SD_BUS_TYPE_UINT32: {
3384                 uint32_t u;
3385
3386                 r = sd_bus_message_read(m, "u", &u);
3387                 if (r < 0)
3388                         return bus_log_parse_error(r);
3389
3390                 if (streq(name, "MainPID")) {
3391                         if (u > 0) {
3392                                 i->main_pid = (pid_t) u;
3393                                 i->running = true;
3394                         }
3395                 } else if (streq(name, "ControlPID"))
3396                         i->control_pid = (pid_t) u;
3397                 else if (streq(name, "ExecMainPID")) {
3398                         if (u > 0)
3399                                 i->main_pid = (pid_t) u;
3400                 } else if (streq(name, "NAccepted"))
3401                         i->n_accepted = u;
3402                 else if (streq(name, "NConnections"))
3403                         i->n_connections = u;
3404
3405                 break;
3406         }
3407
3408         case SD_BUS_TYPE_INT32: {
3409                 int32_t j;
3410
3411                 r = sd_bus_message_read(m, "i", &j);
3412                 if (r < 0)
3413                         return bus_log_parse_error(r);
3414
3415                 if (streq(name, "ExecMainCode"))
3416                         i->exit_code = (int) j;
3417                 else if (streq(name, "ExecMainStatus"))
3418                         i->exit_status = (int) j;
3419
3420                 break;
3421         }
3422
3423         case SD_BUS_TYPE_UINT64: {
3424                 uint64_t u;
3425
3426                 r = sd_bus_message_read(m, "t", &u);
3427                 if (r < 0)
3428                         return bus_log_parse_error(r);
3429
3430                 if (streq(name, "ExecMainStartTimestamp"))
3431                         i->start_timestamp = (usec_t) u;
3432                 else if (streq(name, "ExecMainExitTimestamp"))
3433                         i->exit_timestamp = (usec_t) u;
3434                 else if (streq(name, "ActiveEnterTimestamp"))
3435                         i->active_enter_timestamp = (usec_t) u;
3436                 else if (streq(name, "InactiveEnterTimestamp"))
3437                         i->inactive_enter_timestamp = (usec_t) u;
3438                 else if (streq(name, "InactiveExitTimestamp"))
3439                         i->inactive_exit_timestamp = (usec_t) u;
3440                 else if (streq(name, "InactiveExitTimestampMonotonic"))
3441                         i->inactive_exit_timestamp_monotonic = (usec_t) u;
3442                 else if (streq(name, "ActiveExitTimestamp"))
3443                         i->active_exit_timestamp = (usec_t) u;
3444                 else if (streq(name, "ConditionTimestamp"))
3445                         i->condition_timestamp = (usec_t) u;
3446
3447                 break;
3448         }
3449
3450         case SD_BUS_TYPE_ARRAY:
3451
3452                 if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && startswith(name, "Exec")) {
3453                         _cleanup_free_ ExecStatusInfo *info = NULL;
3454
3455                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sasbttttuii)");
3456                         if (r < 0)
3457                                 return bus_log_parse_error(r);
3458
3459                         info = new0(ExecStatusInfo, 1);
3460                         if (!info)
3461                                 return log_oom();
3462
3463                         while ((r = exec_status_info_deserialize(m, info)) > 0) {
3464
3465                                 info->name = strdup(name);
3466                                 if (!info->name)
3467                                         log_oom();
3468
3469                                 LIST_PREPEND(exec, i->exec, info);
3470
3471                                 info = new0(ExecStatusInfo, 1);
3472                                 if (!info)
3473                                         log_oom();
3474                         }
3475
3476                         if (r < 0)
3477                                 return bus_log_parse_error(r);
3478
3479                         r = sd_bus_message_exit_container(m);
3480                         if (r < 0)
3481                                 return bus_log_parse_error(r);
3482
3483                         return 0;
3484
3485                 } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "Listen")) {
3486                         const char *type, *path;
3487
3488                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(ss)");
3489                         if (r < 0)
3490                                 return bus_log_parse_error(r);
3491
3492                         while ((r = sd_bus_message_read(m, "(ss)", &type, &path)) > 0) {
3493
3494                                 r = strv_extend(&i->listen, type);
3495                                 if (r < 0)
3496                                         return r;
3497
3498                                 r = strv_extend(&i->listen, path);
3499                                 if (r < 0)
3500                                         return r;
3501                         }
3502                         if (r < 0)
3503                                 return bus_log_parse_error(r);
3504
3505                         r = sd_bus_message_exit_container(m);
3506                         if (r < 0)
3507                                 return bus_log_parse_error(r);
3508
3509                         return 0;
3510
3511                 } else if (contents[1] == SD_BUS_TYPE_STRING && streq(name, "DropInPaths")) {
3512
3513                         r = sd_bus_message_read_strv(m, &i->dropin_paths);
3514                         if (r < 0)
3515                                 return bus_log_parse_error(r);
3516
3517                 } else if (contents[1] == SD_BUS_TYPE_STRING && streq(name, "Documentation")) {
3518
3519                         r = sd_bus_message_read_strv(m, &i->documentation);
3520                         if (r < 0)
3521                                 return bus_log_parse_error(r);
3522
3523                 } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "Conditions")) {
3524                         const char *cond, *param;
3525                         int trigger, negate;
3526                         int32_t state;
3527
3528                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sbbsi)");
3529                         if (r < 0)
3530                                 return bus_log_parse_error(r);
3531
3532                         while ((r = sd_bus_message_read(m, "(sbbsi)", &cond, &trigger, &negate, &param, &state)) > 0) {
3533                                 log_debug("%s %d %d %s %d", cond, trigger, negate, param, state);
3534                                 if (state < 0 && (!trigger || !i->failed_condition)) {
3535                                         i->failed_condition = cond;
3536                                         i->failed_condition_trigger = trigger;
3537                                         i->failed_condition_negate = negate;
3538                                         i->failed_condition_param = param;
3539                                 }
3540                         }
3541                         if (r < 0)
3542                                 return bus_log_parse_error(r);
3543
3544                         r = sd_bus_message_exit_container(m);
3545                         if (r < 0)
3546                                 return bus_log_parse_error(r);
3547
3548                 } else
3549                         goto skip;
3550
3551                 break;
3552
3553         case SD_BUS_TYPE_STRUCT_BEGIN:
3554
3555                 if (streq(name, "LoadError")) {
3556                         const char *n, *message;
3557
3558                         r = sd_bus_message_read(m, "(ss)", &n, &message);
3559                         if (r < 0)
3560                                 return bus_log_parse_error(r);
3561
3562                         if (!isempty(message))
3563                                 i->load_error = message;
3564                 } else
3565                         goto skip;
3566
3567                 break;
3568
3569         default:
3570                 goto skip;
3571         }
3572
3573         return 0;
3574
3575 skip:
3576         r = sd_bus_message_skip(m, contents);
3577         if (r < 0)
3578                 return bus_log_parse_error(r);
3579
3580         return 0;
3581 }
3582
3583 static int print_property(const char *name, sd_bus_message *m, const char *contents) {
3584         int r;
3585
3586         assert(name);
3587         assert(m);
3588
3589         /* This is a low-level property printer, see
3590          * print_status_info() for the nicer output */
3591
3592         if (arg_properties && !strv_find(arg_properties, name)) {
3593                 /* skip what we didn't read */
3594                 r = sd_bus_message_skip(m, contents);
3595                 return r;
3596         }
3597
3598         switch (contents[0]) {
3599
3600         case SD_BUS_TYPE_STRUCT_BEGIN:
3601
3602                 if (contents[1] == SD_BUS_TYPE_UINT32 && streq(name, "Job")) {
3603                         uint32_t u;
3604
3605                         r = sd_bus_message_read(m, "(uo)", &u, NULL);
3606                         if (r < 0)
3607                                 return bus_log_parse_error(r);
3608
3609                         if (u > 0)
3610                                 printf("%s=%u\n", name, (unsigned) u);
3611                         else if (arg_all)
3612                                 printf("%s=\n", name);
3613
3614                         return 0;
3615
3616                 } else if (contents[1] == SD_BUS_TYPE_STRING && streq(name, "Unit")) {
3617                         const char *s;
3618
3619                         r = sd_bus_message_read(m, "(so)", &s, NULL);
3620                         if (r < 0)
3621                                 return bus_log_parse_error(r);
3622
3623                         if (arg_all || !isempty(s))
3624                                 printf("%s=%s\n", name, s);
3625
3626                         return 0;
3627
3628                 } else if (contents[1] == SD_BUS_TYPE_STRING && streq(name, "LoadError")) {
3629                         const char *a = NULL, *b = NULL;
3630
3631                         r = sd_bus_message_read(m, "(ss)", &a, &b);
3632                         if (r < 0)
3633                                 return bus_log_parse_error(r);
3634
3635                         if (arg_all || !isempty(a) || !isempty(b))
3636                                 printf("%s=%s \"%s\"\n", name, strempty(a), strempty(b));
3637
3638                         return 0;
3639                 } else if (streq_ptr(name, "SystemCallFilter")) {
3640                         _cleanup_strv_free_ char **l = NULL;
3641                         int whitelist;
3642
3643                         r = sd_bus_message_enter_container(m, 'r', "bas");
3644                         if (r < 0)
3645                                 return bus_log_parse_error(r);
3646
3647                         r = sd_bus_message_read(m, "b", &whitelist);
3648                         if (r < 0)
3649                                 return bus_log_parse_error(r);
3650
3651                         r = sd_bus_message_read_strv(m, &l);
3652                         if (r < 0)
3653                                 return bus_log_parse_error(r);
3654
3655                         r = sd_bus_message_exit_container(m);
3656                         if (r < 0)
3657                                 return bus_log_parse_error(r);
3658
3659                         if (arg_all || whitelist || !strv_isempty(l)) {
3660                                 bool first = true;
3661                                 char **i;
3662
3663                                 fputs(name, stdout);
3664                                 fputc('=', stdout);
3665
3666                                 if (!whitelist)
3667                                         fputc('~', stdout);
3668
3669                                 STRV_FOREACH(i, l) {
3670                                         if (first)
3671                                                 first = false;
3672                                         else
3673                                                 fputc(' ', stdout);
3674
3675                                         fputs(*i, stdout);
3676                                 }
3677                                 fputc('\n', stdout);
3678                         }
3679
3680                         return 0;
3681                 }
3682
3683                 break;
3684
3685         case SD_BUS_TYPE_ARRAY:
3686
3687                 if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "EnvironmentFiles")) {
3688                         const char *path;
3689                         int ignore;
3690
3691                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sb)");
3692                         if (r < 0)
3693                                 return bus_log_parse_error(r);
3694
3695                         while ((r = sd_bus_message_read(m, "(sb)", &path, &ignore)) > 0)
3696                                 printf("EnvironmentFile=%s (ignore_errors=%s)\n", path, yes_no(ignore));
3697
3698                         if (r < 0)
3699                                 return bus_log_parse_error(r);
3700
3701                         r = sd_bus_message_exit_container(m);
3702                         if (r < 0)
3703                                 return bus_log_parse_error(r);
3704
3705                         return 0;
3706
3707                 } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "Paths")) {
3708                         const char *type, *path;
3709
3710                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(ss)");
3711                         if (r < 0)
3712                                 return bus_log_parse_error(r);
3713
3714                         while ((r = sd_bus_message_read(m, "(ss)", &type, &path)) > 0)
3715                                 printf("%s=%s\n", type, path);
3716                         if (r < 0)
3717                                 return bus_log_parse_error(r);
3718
3719                         r = sd_bus_message_exit_container(m);
3720                         if (r < 0)
3721                                 return bus_log_parse_error(r);
3722
3723                         return 0;
3724
3725                 } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "Listen")) {
3726                         const char *type, *path;
3727
3728                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(ss)");
3729                         if (r < 0)
3730                                 return bus_log_parse_error(r);
3731
3732                         while ((r = sd_bus_message_read(m, "(ss)", &type, &path)) > 0)
3733                                 printf("Listen%s=%s\n", type, path);
3734                         if (r < 0)
3735                                 return bus_log_parse_error(r);
3736
3737                         r = sd_bus_message_exit_container(m);
3738                         if (r < 0)
3739                                 return bus_log_parse_error(r);
3740
3741                         return 0;
3742
3743                 } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "Timers")) {
3744                         const char *base;
3745                         uint64_t value, next_elapse;
3746
3747                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(stt)");
3748                         if (r < 0)
3749                                 return bus_log_parse_error(r);
3750
3751                         while ((r = sd_bus_message_read(m, "(stt)", &base, &value, &next_elapse)) > 0) {
3752                                 char timespan1[FORMAT_TIMESPAN_MAX], timespan2[FORMAT_TIMESPAN_MAX];
3753
3754                                 printf("%s={ value=%s ; next_elapse=%s }\n",
3755                                        base,
3756                                        format_timespan(timespan1, sizeof(timespan1), value, 0),
3757                                        format_timespan(timespan2, sizeof(timespan2), next_elapse, 0));
3758                         }
3759                         if (r < 0)
3760                                 return bus_log_parse_error(r);
3761
3762                         r = sd_bus_message_exit_container(m);
3763                         if (r < 0)
3764                                 return bus_log_parse_error(r);
3765
3766                         return 0;
3767
3768                 } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && startswith(name, "Exec")) {
3769                         ExecStatusInfo info = {};
3770
3771                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sasbttttuii)");
3772                         if (r < 0)
3773                                 return bus_log_parse_error(r);
3774
3775                         while ((r = exec_status_info_deserialize(m, &info)) > 0) {
3776                                 char timestamp1[FORMAT_TIMESTAMP_MAX], timestamp2[FORMAT_TIMESTAMP_MAX];
3777                                 _cleanup_free_ char *tt;
3778
3779                                 tt = strv_join(info.argv, " ");
3780
3781                                 printf("%s={ path=%s ; argv[]=%s ; ignore_errors=%s ; start_time=[%s] ; stop_time=[%s] ; pid=%u ; code=%s ; status=%i%s%s }\n",
3782                                        name,
3783                                        strna(info.path),
3784                                        strna(tt),
3785                                        yes_no(info.ignore),
3786                                        strna(format_timestamp(timestamp1, sizeof(timestamp1), info.start_timestamp)),
3787                                        strna(format_timestamp(timestamp2, sizeof(timestamp2), info.exit_timestamp)),
3788                                        (unsigned) info. pid,
3789                                        sigchld_code_to_string(info.code),
3790                                        info.status,
3791                                        info.code == CLD_EXITED ? "" : "/",
3792                                        strempty(info.code == CLD_EXITED ? NULL : signal_to_string(info.status)));
3793
3794                                 free(info.path);
3795                                 strv_free(info.argv);
3796                                 zero(info);
3797                         }
3798
3799                         r = sd_bus_message_exit_container(m);
3800                         if (r < 0)
3801                                 return bus_log_parse_error(r);
3802
3803                         return 0;
3804
3805                 } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "DeviceAllow")) {
3806                         const char *path, *rwm;
3807
3808                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(ss)");
3809                         if (r < 0)
3810                                 return bus_log_parse_error(r);
3811
3812                         while ((r = sd_bus_message_read(m, "(ss)", &path, &rwm)) > 0)
3813                                 printf("%s=%s %s\n", name, strna(path), strna(rwm));
3814                         if (r < 0)
3815                                 return bus_log_parse_error(r);
3816
3817                         r = sd_bus_message_exit_container(m);
3818                         if (r < 0)
3819                                 return bus_log_parse_error(r);
3820
3821                         return 0;
3822
3823                 } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "BlockIODeviceWeight")) {
3824                         const char *path;
3825                         uint64_t weight;
3826
3827                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(st)");
3828                         if (r < 0)
3829                                 return bus_log_parse_error(r);
3830
3831                         while ((r = sd_bus_message_read(m, "(st)", &path, &weight)) > 0)
3832                                 printf("%s=%s %" PRIu64 "\n", name, strna(path), weight);
3833                         if (r < 0)
3834                                 return bus_log_parse_error(r);
3835
3836                         r = sd_bus_message_exit_container(m);
3837                         if (r < 0)
3838                                 return bus_log_parse_error(r);
3839
3840                         return 0;
3841
3842                 } else if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && (streq(name, "BlockIOReadBandwidth") || streq(name, "BlockIOWriteBandwidth"))) {
3843                         const char *path;
3844                         uint64_t bandwidth;
3845
3846                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(st)");
3847                         if (r < 0)
3848                                 return bus_log_parse_error(r);
3849
3850                         while ((r = sd_bus_message_read(m, "(st)", &path, &bandwidth)) > 0)
3851                                 printf("%s=%s %" PRIu64 "\n", name, strna(path), bandwidth);
3852                         if (r < 0)
3853                                 return bus_log_parse_error(r);
3854
3855                         r = sd_bus_message_exit_container(m);
3856                         if (r < 0)
3857                                 return bus_log_parse_error(r);
3858
3859                         return 0;
3860                 }
3861
3862                 break;
3863         }
3864
3865         r = bus_print_property(name, m, arg_all);
3866         if (r < 0)
3867                 return bus_log_parse_error(r);
3868
3869         if (r == 0) {
3870                 r = sd_bus_message_skip(m, contents);
3871                 if (r < 0)
3872                         return bus_log_parse_error(r);
3873
3874                 if (arg_all)
3875                         printf("%s=[unprintable]\n", name);
3876         }
3877
3878         return 0;
3879 }
3880
3881 static int show_one(
3882                 const char *verb,
3883                 sd_bus *bus,
3884                 const char *path,
3885                 bool show_properties,
3886                 bool *new_line,
3887                 bool *ellipsized) {
3888
3889         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
3890         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
3891         UnitStatusInfo info = {};
3892         ExecStatusInfo *p;
3893         int r;
3894
3895         assert(path);
3896         assert(new_line);
3897
3898         log_debug("Showing one %s", path);
3899
3900         r = sd_bus_call_method(
3901                         bus,
3902                         "org.freedesktop.systemd1",
3903                         path,
3904                         "org.freedesktop.DBus.Properties",
3905                         "GetAll",
3906                         &error,
3907                         &reply,
3908                         "s", "");
3909         if (r < 0) {
3910                 log_error("Failed to get properties: %s", bus_error_message(&error, r));
3911                 return r;
3912         }
3913
3914         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "{sv}");
3915         if (r < 0)
3916                 return bus_log_parse_error(r);
3917
3918         if (*new_line)
3919                 printf("\n");
3920
3921         *new_line = true;
3922
3923         while ((r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) {
3924                 const char *name, *contents;
3925
3926                 r = sd_bus_message_read(reply, "s", &name);
3927                 if (r < 0)
3928                         return bus_log_parse_error(r);
3929
3930                 r = sd_bus_message_peek_type(reply, NULL, &contents);
3931                 if (r < 0)
3932                         return bus_log_parse_error(r);
3933
3934                 r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_VARIANT, contents);
3935                 if (r < 0)
3936                         return bus_log_parse_error(r);
3937
3938                 if (show_properties)
3939                         r = print_property(name, reply, contents);
3940                 else
3941                         r = status_property(name, reply, &info, contents);
3942                 if (r < 0)
3943                         return r;
3944
3945                 r = sd_bus_message_exit_container(reply);
3946                 if (r < 0)
3947                         return bus_log_parse_error(r);
3948
3949                 r = sd_bus_message_exit_container(reply);
3950                 if (r < 0)
3951                         return bus_log_parse_error(r);
3952         }
3953         if (r < 0)
3954                 return bus_log_parse_error(r);
3955
3956         r = sd_bus_message_exit_container(reply);
3957         if (r < 0)
3958                 return bus_log_parse_error(r);
3959
3960         r = 0;
3961
3962         if (!show_properties) {
3963                 if (streq(verb, "help"))
3964                         show_unit_help(&info);
3965                 else
3966                         print_status_info(&info, ellipsized);
3967         }
3968
3969         strv_free(info.documentation);
3970         strv_free(info.dropin_paths);
3971         strv_free(info.listen);
3972
3973         if (!streq_ptr(info.active_state, "active") &&
3974             !streq_ptr(info.active_state, "reloading") &&
3975             streq(verb, "status")) {
3976                 /* According to LSB: "program not running" */
3977                 /* 0: program is running or service is OK
3978                  * 1: program is dead and /run PID file exists
3979                  * 2: program is dead and /run/lock lock file exists
3980                  * 3: program is not running
3981                  * 4: program or service status is unknown
3982                  */
3983                 if (info.pid_file && access(info.pid_file, F_OK) == 0)
3984                         r = 1;
3985                 else
3986                         r = 3;
3987         }
3988
3989         while ((p = info.exec)) {
3990                 LIST_REMOVE(exec, info.exec, p);
3991                 exec_status_info_free(p);
3992         }
3993
3994         return r;
3995 }
3996
3997 static int get_unit_dbus_path_by_pid(
3998                 sd_bus *bus,
3999                 uint32_t pid,
4000                 char **unit) {
4001
4002         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4003         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
4004         char *u;
4005         int r;
4006
4007         r = sd_bus_call_method(
4008                         bus,
4009                         "org.freedesktop.systemd1",
4010                         "/org/freedesktop/systemd1",
4011                         "org.freedesktop.systemd1.Manager",
4012                         "GetUnitByPID",
4013                         &error,
4014                         &reply,
4015                         "u", pid);
4016         if (r < 0) {
4017                 log_error("Failed to get unit for PID %lu: %s", (unsigned long) pid, bus_error_message(&error, r));
4018                 return r;
4019         }
4020
4021         r = sd_bus_message_read(reply, "o", &u);
4022         if (r < 0)
4023                 return bus_log_parse_error(r);
4024
4025         u = strdup(u);
4026         if (!u)
4027                 return log_oom();
4028
4029         *unit = u;
4030         return 0;
4031 }
4032
4033 static int show_all(
4034                 const char* verb,
4035                 sd_bus *bus,
4036                 bool show_properties,
4037                 bool *new_line,
4038                 bool *ellipsized) {
4039
4040         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
4041         _cleanup_free_ UnitInfo *unit_infos = NULL;
4042         const UnitInfo *u;
4043         unsigned c;
4044         int r;
4045
4046         r = get_unit_list(bus, &reply, &unit_infos, NULL);
4047         if (r < 0)
4048                 return r;
4049
4050         pager_open_if_enabled();
4051
4052         c = (unsigned) r;
4053
4054         qsort_safe(unit_infos, c, sizeof(UnitInfo), compare_unit_info);
4055
4056         for (u = unit_infos; u < unit_infos + c; u++) {
4057                 _cleanup_free_ char *p = NULL;
4058
4059                 p = unit_dbus_path_from_name(u->id);
4060                 if (!p)
4061                         return log_oom();
4062
4063                 r = show_one(verb, bus, p, show_properties, new_line, ellipsized);
4064                 if (r < 0)
4065                         return r;
4066         }
4067
4068         return 0;
4069 }
4070
4071 static int show_system_status(sd_bus *bus) {
4072         char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], since2[FORMAT_TIMESTAMP_MAX];
4073         _cleanup_free_ char *hn = NULL;
4074         struct machine_info mi = {};
4075         const char *on, *off;
4076         int r;
4077
4078         hn = gethostname_malloc();
4079         if (!hn)
4080                 return log_oom();
4081
4082         r = bus_map_all_properties(bus, "org.freedesktop.systemd1", "/org/freedesktop/systemd1", machine_info_property_map, &mi);
4083         if (r < 0) {
4084                 log_error("Failed to read server status: %s", strerror(-r));
4085                 return r;
4086         }
4087
4088         if (streq_ptr(mi.state, "degraded")) {
4089                 on = ansi_highlight_red();
4090                 off = ansi_highlight_off();
4091         } else if (!streq_ptr(mi.state, "running")) {
4092                 on = ansi_highlight_yellow();
4093                 off = ansi_highlight_off();
4094         } else
4095                 on = off = "";
4096
4097         printf("%s%s%s%s\n", on, draw_special_char(DRAW_BLACK_CIRCLE), off, arg_host ? arg_host : hn);
4098
4099         printf("    State: %s%s%s\n",
4100                on, strna(mi.state), off);
4101
4102         printf("     Jobs: %u queued\n", mi.n_jobs);
4103         printf("   Failed: %u units\n", mi.n_failed_units);
4104
4105         printf("    Since: %s; %s\n",
4106                format_timestamp(since2, sizeof(since2), mi.timestamp),
4107                format_timestamp_relative(since1, sizeof(since1), mi.timestamp));
4108
4109         printf("   CGroup: %s\n", mi.control_group ?: "/");
4110         if (arg_transport == BUS_TRANSPORT_LOCAL || arg_transport == BUS_TRANSPORT_CONTAINER) {
4111                 int flags =
4112                         arg_all * OUTPUT_SHOW_ALL |
4113                         (!on_tty() || pager_have()) * OUTPUT_FULL_WIDTH |
4114                         on_tty() * OUTPUT_COLOR |
4115                         !arg_quiet * OUTPUT_WARN_CUTOFF |
4116                         arg_full * OUTPUT_FULL_WIDTH;
4117
4118                 static const char prefix[] = "           ";
4119                 unsigned c;
4120
4121                 c = columns();
4122                 if (c > sizeof(prefix) - 1)
4123                         c -= sizeof(prefix) - 1;
4124                 else
4125                         c = 0;
4126
4127                 show_cgroup(SYSTEMD_CGROUP_CONTROLLER, strempty(mi.control_group), prefix, c, false, flags);
4128         }
4129
4130         free(mi.state);
4131         free(mi.control_group);
4132
4133         return 0;
4134 }
4135
4136 static int show(sd_bus *bus, char **args) {
4137         bool show_properties, show_status, new_line = false;
4138         bool ellipsized = false;
4139         int r, ret = 0;
4140
4141         assert(bus);
4142         assert(args);
4143
4144         show_properties = streq(args[0], "show");
4145         show_status = streq(args[0], "status");
4146
4147         if (show_properties)
4148                 pager_open_if_enabled();
4149
4150         /* If no argument is specified inspect the manager itself */
4151
4152         if (show_properties && strv_length(args) <= 1)
4153                 return show_one(args[0], bus, "/org/freedesktop/systemd1", show_properties, &new_line, &ellipsized);
4154
4155         if (show_status && strv_length(args) <= 1) {
4156
4157                 if (arg_all)
4158                         pager_open_if_enabled();
4159
4160                 show_system_status(bus);
4161                 new_line = true;
4162
4163                 if (arg_all)
4164                         ret = show_all(args[0], bus, false, &new_line, &ellipsized);
4165         } else {
4166                 _cleanup_free_ char **patterns = NULL;
4167                 char **name;
4168
4169                 STRV_FOREACH(name, args + 1) {
4170                         _cleanup_free_ char *unit = NULL;
4171                         uint32_t id;
4172
4173                         if (safe_atou32(*name, &id) < 0) {
4174                                 if (strv_push(&patterns, *name) < 0)
4175                                         return log_oom();
4176
4177                                 continue;
4178                         } else if (show_properties) {
4179                                 /* Interpret as job id */
4180                                 if (asprintf(&unit, "/org/freedesktop/systemd1/job/%u", id) < 0)
4181                                         return log_oom();
4182
4183                         } else {
4184                                 /* Interpret as PID */
4185                                 r = get_unit_dbus_path_by_pid(bus, id, &unit);
4186                                 if (r < 0) {
4187                                         ret = r;
4188                                         continue;
4189                                 }
4190                         }
4191
4192                         show_one(args[0], bus, unit, show_properties, &new_line, &ellipsized);
4193                 }
4194
4195                 if (!strv_isempty(patterns)) {
4196                         _cleanup_strv_free_ char **names = NULL;
4197
4198                         r = expand_names(bus, patterns, NULL, &names);
4199                         if (r < 0)
4200                                 log_error("Failed to expand names: %s", strerror(-r));
4201
4202                         STRV_FOREACH(name, names) {
4203                                 _cleanup_free_ char *unit;
4204
4205                                 unit = unit_dbus_path_from_name(*name);
4206                                 if (!unit)
4207                                         return log_oom();
4208
4209                                 show_one(args[0], bus, unit, show_properties, &new_line, &ellipsized);
4210                         }
4211                 }
4212         }
4213
4214         if (ellipsized && !arg_quiet)
4215                 printf("Hint: Some lines were ellipsized, use -l to show in full.\n");
4216
4217         return ret;
4218 }
4219
4220 static int cat(sd_bus *bus, char **args) {
4221         _cleanup_free_ char *unit = NULL;
4222         _cleanup_strv_free_ char **names = NULL;
4223         char **name;
4224         bool first = true;
4225         int r = 0;
4226
4227         assert(bus);
4228         assert(args);
4229
4230         r = expand_names(bus, args + 1, NULL, &names);
4231         if (r < 0)
4232                 log_error("Failed to expand names: %s", strerror(-r));
4233
4234         pager_open_if_enabled();
4235
4236         STRV_FOREACH(name, names) {
4237                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4238                 _cleanup_strv_free_ char **dropin_paths = NULL;
4239                 _cleanup_free_ char *fragment_path = NULL;
4240                 char **path;
4241
4242                 unit = unit_dbus_path_from_name(*name);
4243                 if (!unit)
4244                         return log_oom();
4245
4246                 if (need_daemon_reload(bus, *name) > 0)
4247                         log_warning("Unit file of %s changed on disk. Run 'systemctl%s daemon-reload'.",
4248                                     *name, arg_scope == UNIT_FILE_SYSTEM ? "" : " --user");
4249
4250                 r = sd_bus_get_property_string(
4251                                 bus,
4252                                 "org.freedesktop.systemd1",
4253                                 unit,
4254                                 "org.freedesktop.systemd1.Unit",
4255                                 "FragmentPath",
4256                                 &error,
4257                                 &fragment_path);
4258                 if (r < 0) {
4259                         log_warning("Failed to get FragmentPath: %s", bus_error_message(&error, r));
4260                         continue;
4261                 }
4262
4263                 r = sd_bus_get_property_strv(
4264                                 bus,
4265                                 "org.freedesktop.systemd1",
4266                                 unit,
4267                                 "org.freedesktop.systemd1.Unit",
4268                                 "DropInPaths",
4269                                 &error,
4270                                 &dropin_paths);
4271                 if (r < 0) {
4272                         log_warning("Failed to get DropInPaths: %s", bus_error_message(&error, r));
4273                         continue;
4274                 }
4275
4276                 if (first)
4277                         first = false;
4278                 else
4279                         puts("");
4280
4281                 if (!isempty(fragment_path)) {
4282                         printf("%s# %s%s\n",
4283                                ansi_highlight_blue(),
4284                                fragment_path,
4285                                ansi_highlight_off());
4286                         fflush(stdout);
4287
4288                         r = sendfile_full(STDOUT_FILENO, fragment_path);
4289                         if (r < 0) {
4290                                 log_warning("Failed to cat %s: %s", fragment_path, strerror(-r));
4291                                 continue;
4292                         }
4293                 }
4294
4295                 STRV_FOREACH(path, dropin_paths) {
4296                         printf("%s%s# %s%s\n",
4297                                isempty(fragment_path) && path == dropin_paths ? "" : "\n",
4298                                ansi_highlight_blue(),
4299                                *path,
4300                                ansi_highlight_off());
4301                         fflush(stdout);
4302
4303                         r = sendfile_full(STDOUT_FILENO, *path);
4304                         if (r < 0) {
4305                                 log_warning("Failed to cat %s: %s", *path, strerror(-r));
4306                                 continue;
4307                         }
4308                 }
4309         }
4310
4311         return r < 0 ? r : 0;
4312 }
4313
4314 static int set_property(sd_bus *bus, char **args) {
4315         _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
4316         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4317         _cleanup_free_ char *n = NULL;
4318         char **i;
4319         int r;
4320
4321         r = sd_bus_message_new_method_call(
4322                         bus,
4323                         &m,
4324                         "org.freedesktop.systemd1",
4325                         "/org/freedesktop/systemd1",
4326                         "org.freedesktop.systemd1.Manager",
4327                         "SetUnitProperties");
4328         if (r < 0)
4329                 return bus_log_create_error(r);
4330
4331         n = unit_name_mangle(args[1], MANGLE_NOGLOB);
4332         if (!n)
4333                 return log_oom();
4334
4335         r = sd_bus_message_append(m, "sb", n, arg_runtime);
4336         if (r < 0)
4337                 return bus_log_create_error(r);
4338
4339         r = sd_bus_message_open_container(m, SD_BUS_TYPE_ARRAY, "(sv)");
4340         if (r < 0)
4341                 return bus_log_create_error(r);
4342
4343         STRV_FOREACH(i, args + 2) {
4344                 r = sd_bus_message_open_container(m, SD_BUS_TYPE_STRUCT, "sv");
4345                 if (r < 0)
4346                         return bus_log_create_error(r);
4347
4348                 r = bus_append_unit_property_assignment(m, *i);
4349                 if (r < 0)
4350                         return r;
4351
4352                 r = sd_bus_message_close_container(m);
4353                 if (r < 0)
4354                         return bus_log_create_error(r);
4355         }
4356
4357         r = sd_bus_message_close_container(m);
4358         if (r < 0)
4359                 return bus_log_create_error(r);
4360
4361         r = sd_bus_call(bus, m, 0, &error, NULL);
4362         if (r < 0) {
4363                 log_error("Failed to set unit properties on %s: %s", n, bus_error_message(&error, r));
4364                 return r;
4365         }
4366
4367         return 0;
4368 }
4369
4370 static int snapshot(sd_bus *bus, char **args) {
4371         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4372         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
4373         _cleanup_free_ char *n = NULL, *id = NULL;
4374         const char *path;
4375         int r;
4376
4377         if (strv_length(args) > 1)
4378                 n = unit_name_mangle_with_suffix(args[1], MANGLE_NOGLOB, ".snapshot");
4379         else
4380                 n = strdup("");
4381         if (!n)
4382                 return log_oom();
4383
4384         r = sd_bus_call_method(
4385                         bus,
4386                         "org.freedesktop.systemd1",
4387                         "/org/freedesktop/systemd1",
4388                         "org.freedesktop.systemd1.Manager",
4389                         "CreateSnapshot",
4390                         &error,
4391                         &reply,
4392                         "sb", n, false);
4393         if (r < 0) {
4394                 log_error("Failed to create snapshot: %s", bus_error_message(&error, r));
4395                 return r;
4396         }
4397
4398         r = sd_bus_message_read(reply, "o", &path);
4399         if (r < 0)
4400                 return bus_log_parse_error(r);
4401
4402         r = sd_bus_get_property_string(
4403                         bus,
4404                         "org.freedesktop.systemd1",
4405                         path,
4406                         "org.freedesktop.systemd1.Unit",
4407                         "Id",
4408                         &error,
4409                         &id);
4410         if (r < 0) {
4411                 log_error("Failed to get ID of snapshot: %s", bus_error_message(&error, r));
4412                 return r;
4413         }
4414
4415         if (!arg_quiet)
4416                 puts(id);
4417
4418         return 0;
4419 }
4420
4421 static int delete_snapshot(sd_bus *bus, char **args) {
4422         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4423         _cleanup_strv_free_ char **names = NULL;
4424         char **name;
4425         int r, q;
4426
4427         assert(args);
4428
4429         r = expand_names(bus, args + 1, ".snapshot", &names);
4430         if (r < 0)
4431                 log_error("Failed to expand names: %s", strerror(-r));
4432
4433         STRV_FOREACH(name, names) {
4434                 q = sd_bus_call_method(
4435                                 bus,
4436                                 "org.freedesktop.systemd1",
4437                                 "/org/freedesktop/systemd1",
4438                                 "org.freedesktop.systemd1.Manager",
4439                                 "RemoveSnapshot",
4440                                 &error,
4441                                 NULL,
4442                                 "s", *name);
4443                 if (q < 0) {
4444                         log_error("Failed to remove snapshot %s: %s",
4445                                   *name, bus_error_message(&error, r));
4446                         if (r == 0)
4447                                 r = q;
4448                 }
4449         }
4450
4451         return r;
4452 }
4453
4454 static int daemon_reload(sd_bus *bus, char **args) {
4455         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4456         const char *method;
4457         int r;
4458
4459         if (arg_action == ACTION_RELOAD)
4460                 method = "Reload";
4461         else if (arg_action == ACTION_REEXEC)
4462                 method = "Reexecute";
4463         else {
4464                 assert(arg_action == ACTION_SYSTEMCTL);
4465
4466                 method =
4467                         streq(args[0], "clear-jobs")    ||
4468                         streq(args[0], "cancel")        ? "ClearJobs" :
4469                         streq(args[0], "daemon-reexec") ? "Reexecute" :
4470                         streq(args[0], "reset-failed")  ? "ResetFailed" :
4471                         streq(args[0], "halt")          ? "Halt" :
4472                         streq(args[0], "poweroff")      ? "PowerOff" :
4473                         streq(args[0], "reboot")        ? "Reboot" :
4474                         streq(args[0], "kexec")         ? "KExec" :
4475                         streq(args[0], "exit")          ? "Exit" :
4476                                     /* "daemon-reload" */ "Reload";
4477         }
4478
4479         r = sd_bus_call_method(
4480                         bus,
4481                         "org.freedesktop.systemd1",
4482                         "/org/freedesktop/systemd1",
4483                         "org.freedesktop.systemd1.Manager",
4484                         method,
4485                         &error,
4486                         NULL,
4487                         NULL);
4488
4489         if (r == -ENOENT && arg_action != ACTION_SYSTEMCTL)
4490                 /* There's always a fallback possible for
4491                  * legacy actions. */
4492                 r = -EADDRNOTAVAIL;
4493         else if ((r == -ETIMEDOUT || r == -ECONNRESET) && streq(method, "Reexecute"))
4494                 /* On reexecution, we expect a disconnect, not a
4495                  * reply */
4496                 r = 0;
4497         else if (r < 0)
4498                 log_error("Failed to execute operation: %s", bus_error_message(&error, r));
4499
4500         return r < 0 ? r : 0;
4501 }
4502
4503 static int reset_failed(sd_bus *bus, char **args) {
4504         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4505         _cleanup_strv_free_ char **names = NULL;
4506         char **name;
4507         int r, q;
4508
4509         if (strv_length(args) <= 1)
4510                 return daemon_reload(bus, args);
4511
4512         r = expand_names(bus, args + 1, NULL, &names);
4513         if (r < 0)
4514                 log_error("Failed to expand names: %s", strerror(-r));
4515
4516         STRV_FOREACH(name, names) {
4517                 q = sd_bus_call_method(
4518                                 bus,
4519                                 "org.freedesktop.systemd1",
4520                                 "/org/freedesktop/systemd1",
4521                                 "org.freedesktop.systemd1.Manager",
4522                                 "ResetFailedUnit",
4523                                 &error,
4524                                 NULL,
4525                                 "s", *name);
4526                 if (q < 0) {
4527                         log_error("Failed to reset failed state of unit %s: %s",
4528                                   *name, bus_error_message(&error, r));
4529                         if (r == 0)
4530                                 r = q;
4531                 }
4532         }
4533
4534         return r;
4535 }
4536
4537 static int show_environment(sd_bus *bus, char **args) {
4538         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4539         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
4540         const char *text;
4541         int r;
4542
4543         pager_open_if_enabled();
4544
4545         r = sd_bus_get_property(
4546                         bus,
4547                         "org.freedesktop.systemd1",
4548                         "/org/freedesktop/systemd1",
4549                         "org.freedesktop.systemd1.Manager",
4550                         "Environment",
4551                         &error,
4552                         &reply,
4553                         "as");
4554         if (r < 0) {
4555                 log_error("Failed to get environment: %s", bus_error_message(&error, r));
4556                 return r;
4557         }
4558
4559         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "s");
4560         if (r < 0)
4561                 return bus_log_parse_error(r);
4562
4563         while ((r = sd_bus_message_read_basic(reply, SD_BUS_TYPE_STRING, &text)) > 0)
4564                 puts(text);
4565         if (r < 0)
4566                 return bus_log_parse_error(r);
4567
4568         r = sd_bus_message_exit_container(reply);
4569         if (r < 0)
4570                 return bus_log_parse_error(r);
4571
4572         return 0;
4573 }
4574
4575 static int switch_root(sd_bus *bus, char **args) {
4576         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4577         _cleanup_free_ char *cmdline_init = NULL;
4578         const char *root, *init;
4579         unsigned l;
4580         int r;
4581
4582         l = strv_length(args);
4583         if (l < 2 || l > 3) {
4584                 log_error("Wrong number of arguments.");
4585                 return -EINVAL;
4586         }
4587
4588         root = args[1];
4589
4590         if (l >= 3)
4591                 init = args[2];
4592         else {
4593                 r = parse_env_file("/proc/cmdline", WHITESPACE,
4594                                    "init", &cmdline_init,
4595                                    NULL);
4596                 if (r < 0)
4597                         log_debug("Failed to parse /proc/cmdline: %s", strerror(-r));
4598
4599                 init = cmdline_init;
4600         }
4601
4602         if (isempty(init))
4603                 init = NULL;
4604
4605         if (init) {
4606                 const char *root_systemd_path = NULL, *root_init_path = NULL;
4607
4608                 root_systemd_path = strappenda(root, "/" SYSTEMD_BINARY_PATH);
4609                 root_init_path = strappenda3(root, "/", init);
4610
4611                 /* If the passed init is actually the same as the
4612                  * systemd binary, then let's suppress it. */
4613                 if (files_same(root_init_path, root_systemd_path) > 0)
4614                         init = NULL;
4615         }
4616
4617         log_debug("Switching root - root: %s; init: %s", root, strna(init));
4618
4619         r = sd_bus_call_method(
4620                         bus,
4621                         "org.freedesktop.systemd1",
4622                         "/org/freedesktop/systemd1",
4623                         "org.freedesktop.systemd1.Manager",
4624                         "SwitchRoot",
4625                         &error,
4626                         NULL,
4627                         "ss", root, init);
4628         if (r < 0) {
4629                 log_error("Failed to switch root: %s", bus_error_message(&error, r));
4630                 return r;
4631         }
4632
4633         return 0;
4634 }
4635
4636 static int set_environment(sd_bus *bus, char **args) {
4637         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4638         _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
4639         const char *method;
4640         int r;
4641
4642         assert(bus);
4643         assert(args);
4644
4645         method = streq(args[0], "set-environment")
4646                 ? "SetEnvironment"
4647                 : "UnsetEnvironment";
4648
4649         r = sd_bus_message_new_method_call(
4650                         bus,
4651                         &m,
4652                         "org.freedesktop.systemd1",
4653                         "/org/freedesktop/systemd1",
4654                         "org.freedesktop.systemd1.Manager",
4655                         method);
4656         if (r < 0)
4657                 return bus_log_create_error(r);
4658
4659         r = sd_bus_message_append_strv(m, args + 1);
4660         if (r < 0)
4661                 return bus_log_create_error(r);
4662
4663         r = sd_bus_call(bus, m, 0, &error, NULL);
4664         if (r < 0) {
4665                 log_error("Failed to set environment: %s", bus_error_message(&error, r));
4666                 return r;
4667         }
4668
4669         return 0;
4670 }
4671
4672 static int import_environment(sd_bus *bus, char **args) {
4673         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4674         _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
4675         int r;
4676
4677         assert(bus);
4678         assert(args);
4679
4680         r = sd_bus_message_new_method_call(
4681                         bus,
4682                         &m,
4683                         "org.freedesktop.systemd1",
4684                         "/org/freedesktop/systemd1",
4685                         "org.freedesktop.systemd1.Manager",
4686                         "SetEnvironment");
4687         if (r < 0)
4688                 return bus_log_create_error(r);
4689
4690         if (strv_isempty(args + 1))
4691                 r = sd_bus_message_append_strv(m, environ);
4692         else {
4693                 char **a, **b;
4694
4695                 r = sd_bus_message_open_container(m, 'a', "s");
4696                 if (r < 0)
4697                         return bus_log_create_error(r);
4698
4699                 STRV_FOREACH(a, args + 1) {
4700
4701                         if (!env_name_is_valid(*a)) {
4702                                 log_error("Not a valid environment variable name: %s", *a);
4703                                 return -EINVAL;
4704                         }
4705
4706                         STRV_FOREACH(b, environ) {
4707                                 const char *eq;
4708
4709                                 eq = startswith(*b, *a);
4710                                 if (eq && *eq == '=') {
4711
4712                                         r = sd_bus_message_append(m, "s", *b);
4713                                         if (r < 0)
4714                                                 return bus_log_create_error(r);
4715
4716                                         break;
4717                                 }
4718                         }
4719                 }
4720
4721                 r = sd_bus_message_close_container(m);
4722         }
4723         if (r < 0)
4724                 return bus_log_create_error(r);
4725
4726         r = sd_bus_call(bus, m, 0, &error, NULL);
4727         if (r < 0) {
4728                 log_error("Failed to import environment: %s", bus_error_message(&error, r));
4729                 return r;
4730         }
4731
4732         return 0;
4733 }
4734
4735 static int enable_sysv_units(const char *verb, char **args) {
4736         int r = 0;
4737
4738 #if defined(HAVE_SYSV_COMPAT) && defined(HAVE_CHKCONFIG)
4739         unsigned f = 1, t = 1;
4740         _cleanup_lookup_paths_free_ LookupPaths paths = {};
4741
4742         if (arg_scope != UNIT_FILE_SYSTEM)
4743                 return 0;
4744
4745         if (!streq(verb, "enable") &&
4746             !streq(verb, "disable") &&
4747             !streq(verb, "is-enabled"))
4748                 return 0;
4749
4750         /* Processes all SysV units, and reshuffles the array so that
4751          * afterwards only the native units remain */
4752
4753         r = lookup_paths_init(&paths, SYSTEMD_SYSTEM, false, NULL, NULL, NULL);
4754         if (r < 0)
4755                 return r;
4756
4757         r = 0;
4758         for (f = 0; args[f]; f++) {
4759                 const char *name;
4760                 _cleanup_free_ char *p = NULL, *q = NULL;
4761                 bool found_native = false, found_sysv;
4762                 unsigned c = 1;
4763                 const char *argv[6] = { "/sbin/chkconfig", NULL, NULL, NULL, NULL };
4764                 char **k, *l;
4765                 int j;
4766                 pid_t pid;
4767                 siginfo_t status;
4768
4769                 name = args[f];
4770
4771                 if (!endswith(name, ".service"))
4772                         continue;
4773
4774                 if (path_is_absolute(name))
4775                         continue;
4776
4777                 STRV_FOREACH(k, paths.unit_path) {
4778                         if (!isempty(arg_root))
4779                                 asprintf(&p, "%s/%s/%s", arg_root, *k, name);
4780                         else
4781                                 asprintf(&p, "%s/%s", *k, name);
4782
4783                         if (!p) {
4784                                 r = log_oom();
4785                                 goto finish;
4786                         }
4787
4788                         found_native = access(p, F_OK) >= 0;
4789                         free(p);
4790                         p = NULL;
4791
4792                         if (found_native)
4793                                 break;
4794                 }
4795
4796                 if (found_native)
4797                         continue;
4798
4799                 if (!isempty(arg_root))
4800                         asprintf(&p, "%s/" SYSTEM_SYSVINIT_PATH "/%s", arg_root, name);
4801                 else
4802                         asprintf(&p, SYSTEM_SYSVINIT_PATH "/%s", name);
4803                 if (!p) {
4804                         r = log_oom();
4805                         goto finish;
4806                 }
4807
4808                 p[strlen(p) - sizeof(".service") + 1] = 0;
4809                 found_sysv = access(p, F_OK) >= 0;
4810
4811                 if (!found_sysv)
4812                         continue;
4813
4814                 /* Mark this entry, so that we don't try enabling it as native unit */
4815                 args[f] = (char*) "";
4816
4817                 log_info("%s is not a native service, redirecting to /sbin/chkconfig.", name);
4818
4819                 if (!isempty(arg_root))
4820                         argv[c++] = q = strappend("--root=", arg_root);
4821
4822                 argv[c++] = basename(p);
4823                 argv[c++] =
4824                         streq(verb, "enable") ? "on" :
4825                         streq(verb, "disable") ? "off" : "--level=5";
4826                 argv[c] = NULL;
4827
4828                 l = strv_join((char**)argv, " ");
4829                 if (!l) {
4830                         r = log_oom();
4831                         goto finish;
4832                 }
4833
4834                 log_info("Executing %s", l);
4835                 free(l);
4836
4837                 pid = fork();
4838                 if (pid < 0) {
4839                         log_error("Failed to fork: %m");
4840                         r = -errno;
4841                         goto finish;
4842                 } else if (pid == 0) {
4843                         /* Child */
4844
4845                         execv(argv[0], (char**) argv);
4846                         _exit(EXIT_FAILURE);
4847                 }
4848
4849                 j = wait_for_terminate(pid, &status);
4850                 if (j < 0) {
4851                         log_error("Failed to wait for child: %s", strerror(-r));
4852                         r = j;
4853                         goto finish;
4854                 }
4855
4856                 if (status.si_code == CLD_EXITED) {
4857                         if (streq(verb, "is-enabled")) {
4858                                 if (status.si_status == 0) {
4859                                         if (!arg_quiet)
4860                                                 puts("enabled");
4861                                         r = 1;
4862                                 } else {
4863                                         if (!arg_quiet)
4864                                                 puts("disabled");
4865                                 }
4866
4867                         } else if (status.si_status != 0) {
4868                                 r = -EINVAL;
4869                                 goto finish;
4870                         }
4871                 } else {
4872                         r = -EPROTO;
4873                         goto finish;
4874                 }
4875         }
4876
4877 finish:
4878         /* Drop all SysV units */
4879         for (f = 0, t = 0; args[f]; f++) {
4880
4881                 if (isempty(args[f]))
4882                         continue;
4883
4884                 args[t++] = args[f];
4885         }
4886
4887         args[t] = NULL;
4888
4889 #endif
4890         return r;
4891 }
4892
4893 static int mangle_names(char **original_names, char ***mangled_names) {
4894         char **i, **l, **name;
4895
4896         l = new(char*, strv_length(original_names) + 1);
4897         if (!l)
4898                 return log_oom();
4899
4900         i = l;
4901         STRV_FOREACH(name, original_names) {
4902
4903                 /* When enabling units qualified path names are OK,
4904                  * too, hence allow them explicitly. */
4905
4906                 if (is_path(*name))
4907                         *i = strdup(*name);
4908                 else
4909                         *i = unit_name_mangle(*name, MANGLE_NOGLOB);
4910
4911                 if (!*i) {
4912                         strv_free(l);
4913                         return log_oom();
4914                 }
4915
4916                 i++;
4917         }
4918
4919         *i = NULL;
4920         *mangled_names = l;
4921
4922         return 0;
4923 }
4924
4925 static int enable_unit(sd_bus *bus, char **args) {
4926         _cleanup_strv_free_ char **names = NULL;
4927         const char *verb = args[0];
4928         UnitFileChange *changes = NULL;
4929         unsigned n_changes = 0;
4930         int carries_install_info = -1;
4931         int r;
4932
4933         if (!args[1])
4934                 return 0;
4935
4936         r = mangle_names(args+1, &names);
4937         if (r < 0)
4938                 return r;
4939
4940         r = enable_sysv_units(verb, names);
4941         if (r < 0)
4942                 return r;
4943
4944         /* If the operation was fully executed by the SysV compat,
4945          * let's finish early */
4946         if (strv_isempty(names))
4947                 return 0;
4948
4949         if (!bus || avoid_bus()) {
4950                 if (streq(verb, "enable")) {
4951                         r = unit_file_enable(arg_scope, arg_runtime, arg_root, names, arg_force, &changes, &n_changes);
4952                         carries_install_info = r;
4953                 } else if (streq(verb, "disable"))
4954                         r = unit_file_disable(arg_scope, arg_runtime, arg_root, names, &changes, &n_changes);
4955                 else if (streq(verb, "reenable")) {
4956                         r = unit_file_reenable(arg_scope, arg_runtime, arg_root, names, arg_force, &changes, &n_changes);
4957                         carries_install_info = r;
4958                 } else if (streq(verb, "link"))
4959                         r = unit_file_link(arg_scope, arg_runtime, arg_root, names, arg_force, &changes, &n_changes);
4960                 else if (streq(verb, "preset")) {
4961                         r = unit_file_preset(arg_scope, arg_runtime, arg_root, names, arg_force, &changes, &n_changes);
4962                         carries_install_info = r;
4963                 } else if (streq(verb, "mask"))
4964                         r = unit_file_mask(arg_scope, arg_runtime, arg_root, names, arg_force, &changes, &n_changes);
4965                 else if (streq(verb, "unmask"))
4966                         r = unit_file_unmask(arg_scope, arg_runtime, arg_root, names, &changes, &n_changes);
4967                 else
4968                         assert_not_reached("Unknown verb");
4969
4970                 if (r < 0) {
4971                         log_error("Operation failed: %s", strerror(-r));
4972                         goto finish;
4973                 }
4974
4975                 if (!arg_quiet)
4976                         dump_unit_file_changes(changes, n_changes);
4977
4978                 r = 0;
4979         } else {
4980                 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL, *m = NULL;
4981                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4982                 int expect_carries_install_info = false;
4983                 bool send_force = true;
4984                 const char *method;
4985
4986                 if (streq(verb, "enable")) {
4987                         method = "EnableUnitFiles";
4988                         expect_carries_install_info = true;
4989                 } else if (streq(verb, "disable")) {
4990                         method = "DisableUnitFiles";
4991                         send_force = false;
4992                 } else if (streq(verb, "reenable")) {
4993                         method = "ReenableUnitFiles";
4994                         expect_carries_install_info = true;
4995                 } else if (streq(verb, "link"))
4996                         method = "LinkUnitFiles";
4997                 else if (streq(verb, "preset")) {
4998                         method = "PresetUnitFiles";
4999                         expect_carries_install_info = true;
5000                 } else if (streq(verb, "mask"))
5001                         method = "MaskUnitFiles";
5002                 else if (streq(verb, "unmask")) {
5003                         method = "UnmaskUnitFiles";
5004                         send_force = false;
5005                 } else
5006                         assert_not_reached("Unknown verb");
5007
5008                 r = sd_bus_message_new_method_call(
5009                                 bus,
5010                                 &m,
5011                                 "org.freedesktop.systemd1",
5012                                 "/org/freedesktop/systemd1",
5013                                 "org.freedesktop.systemd1.Manager",
5014                                 method);
5015                 if (r < 0)
5016                         return bus_log_create_error(r);
5017
5018                 r = sd_bus_message_append_strv(m, names);
5019                 if (r < 0)
5020                         return bus_log_create_error(r);
5021
5022                 r = sd_bus_message_append(m, "b", arg_runtime);
5023                 if (r < 0)
5024                         return bus_log_create_error(r);
5025
5026                 if (send_force) {
5027                         r = sd_bus_message_append(m, "b", arg_force);
5028                         if (r < 0)
5029                                 return bus_log_create_error(r);
5030                 }
5031
5032                 r = sd_bus_call(bus, m, 0, &error, &reply);
5033                 if (r < 0) {
5034                         log_error("Failed to execute operation: %s", bus_error_message(&error, r));
5035                         return r;
5036                 }
5037
5038                 if (expect_carries_install_info) {
5039                         r = sd_bus_message_read(reply, "b", &carries_install_info);
5040                         if (r < 0)
5041                                 return bus_log_parse_error(r);
5042                 }
5043
5044                 r = deserialize_and_dump_unit_file_changes(reply);
5045                 if (r < 0)
5046                         return r;
5047
5048                 /* Try to reload if enabeld */
5049                 if (!arg_no_reload)
5050                         r = daemon_reload(bus, args);
5051                 else
5052                         r = 0;
5053         }
5054
5055         if (carries_install_info == 0)
5056                 log_warning("The unit files have no [Install] section. They are not meant to be enabled\n"
5057                             "using systemctl.\n"
5058                             "Possible reasons for having this kind of units are:\n"
5059                             "1) A unit may be statically enabled by being symlinked from another unit's\n"
5060                             "   .wants/ or .requires/ directory.\n"
5061                             "2) A unit's purpose may be to act as a helper for some other unit which has\n"
5062                             "   a requirement dependency on it.\n"
5063                             "3) A unit may be started when needed via activation (socket, path, timer,\n"
5064                             "   D-Bus, udev, scripted systemctl call, ...).\n");
5065
5066 finish:
5067         unit_file_changes_free(changes, n_changes);
5068
5069         return r;
5070 }
5071
5072 static int unit_is_enabled(sd_bus *bus, char **args) {
5073
5074         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
5075         _cleanup_strv_free_ char **names = NULL;
5076         bool enabled;
5077         char **name;
5078         int r;
5079
5080         r = mangle_names(args+1, &names);
5081         if (r < 0)
5082                 return r;
5083
5084         r = enable_sysv_units(args[0], names);
5085         if (r < 0)
5086                 return r;
5087
5088         enabled = r > 0;
5089
5090         if (!bus || avoid_bus()) {
5091
5092                 STRV_FOREACH(name, names) {
5093                         UnitFileState state;
5094
5095                         state = unit_file_get_state(arg_scope, arg_root, *name);
5096                         if (state < 0) {
5097                                 log_error("Failed to get unit file state for %s: %s", *name, strerror(-state));
5098                                 return state;
5099                         }
5100
5101                         if (state == UNIT_FILE_ENABLED ||
5102                             state == UNIT_FILE_ENABLED_RUNTIME ||
5103                             state == UNIT_FILE_STATIC)
5104                                 enabled = true;
5105
5106                         if (!arg_quiet)
5107                                 puts(unit_file_state_to_string(state));
5108                 }
5109
5110         } else {
5111                 STRV_FOREACH(name, names) {
5112                         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
5113                         const char *s;
5114
5115                         r = sd_bus_call_method(
5116                                         bus,
5117                                         "org.freedesktop.systemd1",
5118                                         "/org/freedesktop/systemd1",
5119                                         "org.freedesktop.systemd1.Manager",
5120                                         "GetUnitFileState",
5121                                         &error,
5122                                         &reply,
5123                                         "s", *name);
5124                         if (r < 0) {
5125                                 log_error("Failed to get unit file state for %s: %s", *name, bus_error_message(&error, r));
5126                                 return r;
5127                         }
5128
5129                         r = sd_bus_message_read(reply, "s", &s);
5130                         if (r < 0)
5131                                 return bus_log_parse_error(r);
5132
5133                         if (streq(s, "enabled") ||
5134                             streq(s, "enabled-runtime") ||
5135                             streq(s, "static"))
5136                                 enabled = true;
5137
5138                         if (!arg_quiet)
5139                                 puts(s);
5140                 }
5141         }
5142
5143         return !enabled;
5144 }
5145
5146 static int systemctl_help(void) {
5147
5148         pager_open_if_enabled();
5149
5150         printf("%s [OPTIONS...] {COMMAND} ...\n\n"
5151                "Query or send control commands to the systemd manager.\n\n"
5152                "  -h --help           Show this help\n"
5153                "     --version        Show package version\n"
5154                "     --system         Connect to system manager\n"
5155                "     --user           Connect to user service manager\n"
5156                "  -H --host=[USER@]HOST\n"
5157                "                      Operate on remote host\n"
5158                "  -M --machine=CONTAINER\n"
5159                "                      Operate on local container\n"
5160                "  -t --type=TYPE      List only units of a particular type\n"
5161                "     --state=STATE    List only units with particular LOAD or SUB or ACTIVE state\n"
5162                "  -p --property=NAME  Show only properties by this name\n"
5163                "  -a --all            Show all loaded units/properties, including dead/empty\n"
5164                "                      ones. To list all units installed on the system, use\n"
5165                "                      the 'list-unit-files' command instead.\n"
5166                "  -l --full           Don't ellipsize unit names on output\n"
5167                "     --reverse        Show reverse dependencies with 'list-dependencies'\n"
5168                "     --job-mode=MODE  Specify how to deal with already queued jobs, when\n"
5169                "                      queueing a new job\n"
5170                "     --show-types     When showing sockets, explicitly show their type\n"
5171                "  -i --ignore-inhibitors\n"
5172                "                      When shutting down or sleeping, ignore inhibitors\n"
5173                "     --kill-who=WHO   Who to send signal to\n"
5174                "  -s --signal=SIGNAL  Which signal to send\n"
5175                "  -q --quiet          Suppress output\n"
5176                "     --no-block       Do not wait until operation finished\n"
5177                "     --no-wall        Don't send wall message before halt/power-off/reboot\n"
5178                "     --no-reload      When enabling/disabling unit files, don't reload daemon\n"
5179                "                      configuration\n"
5180                "     --no-legend      Do not print a legend (column headers and hints)\n"
5181                "     --no-pager       Do not pipe output into a pager\n"
5182                "     --no-ask-password\n"
5183                "                      Do not ask for system passwords\n"
5184                "     --global         Enable/disable unit files globally\n"
5185                "     --runtime        Enable unit files only temporarily until next reboot\n"
5186                "  -f --force          When enabling unit files, override existing symlinks\n"
5187                "                      When shutting down, execute action immediately\n"
5188                "     --root=PATH      Enable unit files in the specified root directory\n"
5189                "  -n --lines=INTEGER  Number of journal entries to show\n"
5190                "  -o --output=STRING  Change journal output mode (short, short-monotonic,\n"
5191                "                      verbose, export, json, json-pretty, json-sse, cat)\n"
5192                "     --plain          Print unit dependencies as a list instead of a tree\n\n"
5193                "Unit Commands:\n"
5194                "  list-units [PATTERN...]         List loaded units\n"
5195                "  list-sockets [PATTERN...]       List loaded sockets ordered by address\n"
5196                "  list-timers [PATTERN...]        List loaded timers ordered by next elapse\n"
5197                "  start NAME...                   Start (activate) one or more units\n"
5198                "  stop NAME...                    Stop (deactivate) one or more units\n"
5199                "  reload NAME...                  Reload one or more units\n"
5200                "  restart NAME...                 Start or restart one or more units\n"
5201                "  try-restart NAME...             Restart one or more units if active\n"
5202                "  reload-or-restart NAME...       Reload one or more units if possible,\n"
5203                "                                  otherwise start or restart\n"
5204                "  reload-or-try-restart NAME...   Reload one or more units if possible,\n"
5205                "                                  otherwise restart if active\n"
5206                "  isolate NAME                    Start one unit and stop all others\n"
5207                "  kill NAME...                    Send signal to processes of a unit\n"
5208                "  is-active NAME...               Check whether units are active\n"
5209                "  is-failed NAME...               Check whether units are failed\n"
5210                "  status [NAME...|PID...]         Show runtime status of one or more units\n"
5211                "  show [NAME...|JOB...]           Show properties of one or more\n"
5212                "                                  units/jobs or the manager\n"
5213                "  cat NAME...                     Show files and drop-ins of one or more units\n"
5214                "  set-property NAME ASSIGNMENT... Sets one or more properties of a unit\n"
5215                "  help NAME...|PID...             Show manual for one or more units\n"
5216                "  reset-failed [NAME...]          Reset failed state for all, one, or more\n"
5217                "                                  units\n"
5218                "  list-dependencies [NAME]        Recursively show units which are required\n"
5219                "                                  or wanted by this unit or by which this\n"
5220                "                                  unit is required or wanted\n\n"
5221                "Unit File Commands:\n"
5222                "  list-unit-files [PATTERN...]    List installed unit files\n"
5223                "  enable NAME...                  Enable one or more unit files\n"
5224                "  disable NAME...                 Disable one or more unit files\n"
5225                "  reenable NAME...                Reenable one or more unit files\n"
5226                "  preset NAME...                  Enable/disable one or more unit files\n"
5227                "                                  based on preset configuration\n"
5228                "  is-enabled NAME...              Check whether unit files are enabled\n\n"
5229                "  mask NAME...                    Mask one or more units\n"
5230                "  unmask NAME...                  Unmask one or more units\n"
5231                "  link PATH...                    Link one or more units files into\n"
5232                "                                  the search path\n"
5233                "  get-default                     Get the name of the default target\n"
5234                "  set-default NAME                Set the default target\n\n"
5235                "Machine Commands:\n"
5236                "  list-machines [PATTERN...]      List local containers and host\n\n"
5237                "Job Commands:\n"
5238                "  list-jobs [PATTERN...]          List jobs\n"
5239                "  cancel [JOB...]                 Cancel all, one, or more jobs\n\n"
5240                "Snapshot Commands:\n"
5241                "  snapshot [NAME]                 Create a snapshot\n"
5242                "  delete NAME...                  Remove one or more snapshots\n\n"
5243                "Environment Commands:\n"
5244                "  show-environment                Dump environment\n"
5245                "  set-environment NAME=VALUE...   Set one or more environment variables\n"
5246                "  unset-environment NAME...       Unset one or more environment variables\n"
5247                "  import-environment NAME...      Import all, one or more environment variables\n\n"
5248                "Manager Lifecycle Commands:\n"
5249                "  daemon-reload                   Reload systemd manager configuration\n"
5250                "  daemon-reexec                   Reexecute systemd manager\n\n"
5251                "System Commands:\n"
5252                "  default                         Enter system default mode\n"
5253                "  rescue                          Enter system rescue mode\n"
5254                "  emergency                       Enter system emergency mode\n"
5255                "  halt                            Shut down and halt the system\n"
5256                "  poweroff                        Shut down and power-off the system\n"
5257                "  reboot [ARG]                    Shut down and reboot the system\n"
5258                "  kexec                           Shut down and reboot the system with kexec\n"
5259                "  exit                            Request user instance exit\n"
5260                "  switch-root ROOT [INIT]         Change to a different root file system\n"
5261                "  suspend                         Suspend the system\n"
5262                "  hibernate                       Hibernate the system\n"
5263                "  hybrid-sleep                    Hibernate and suspend the system\n",
5264                program_invocation_short_name);
5265
5266         return 0;
5267 }
5268
5269 static int halt_help(void) {
5270
5271         printf("%s [OPTIONS...]%s\n\n"
5272                "%s the system.\n\n"
5273                "     --help      Show this help\n"
5274                "     --halt      Halt the machine\n"
5275                "  -p --poweroff  Switch off the machine\n"
5276                "     --reboot    Reboot the machine\n"
5277                "  -f --force     Force immediate halt/power-off/reboot\n"
5278                "  -w --wtmp-only Don't halt/power-off/reboot, just write wtmp record\n"
5279                "  -d --no-wtmp   Don't write wtmp record\n"
5280                "     --no-wall   Don't send wall message before halt/power-off/reboot\n",
5281                program_invocation_short_name,
5282                arg_action == ACTION_REBOOT   ? " [ARG]" : "",
5283                arg_action == ACTION_REBOOT   ? "Reboot" :
5284                arg_action == ACTION_POWEROFF ? "Power off" :
5285                                                "Halt");
5286
5287         return 0;
5288 }
5289
5290 static int shutdown_help(void) {
5291
5292         printf("%s [OPTIONS...] [TIME] [WALL...]\n\n"
5293                "Shut down the system.\n\n"
5294                "     --help      Show this help\n"
5295                "  -H --halt      Halt the machine\n"
5296                "  -P --poweroff  Power-off the machine\n"
5297                "  -r --reboot    Reboot the machine\n"
5298                "  -h             Equivalent to --poweroff, overridden by --halt\n"
5299                "  -k             Don't halt/power-off/reboot, just send warnings\n"
5300                "     --no-wall   Don't send wall message before halt/power-off/reboot\n"
5301                "  -c             Cancel a pending shutdown\n",
5302                program_invocation_short_name);
5303
5304         return 0;
5305 }
5306
5307 static int telinit_help(void) {
5308
5309         printf("%s [OPTIONS...] {COMMAND}\n\n"
5310                "Send control commands to the init daemon.\n\n"
5311                "     --help      Show this help\n"
5312                "     --no-wall   Don't send wall message before halt/power-off/reboot\n\n"
5313                "Commands:\n"
5314                "  0              Power-off the machine\n"
5315                "  6              Reboot the machine\n"
5316                "  2, 3, 4, 5     Start runlevelX.target unit\n"
5317                "  1, s, S        Enter rescue mode\n"
5318                "  q, Q           Reload init daemon configuration\n"
5319                "  u, U           Reexecute init daemon\n",
5320                program_invocation_short_name);
5321
5322         return 0;
5323 }
5324
5325 static int runlevel_help(void) {
5326
5327         printf("%s [OPTIONS...]\n\n"
5328                "Prints the previous and current runlevel of the init system.\n\n"
5329                "     --help      Show this help\n",
5330                program_invocation_short_name);
5331
5332         return 0;
5333 }
5334
5335 static int help_types(void) {
5336         int i;
5337         const char *t;
5338
5339         puts("Available unit types:");
5340         for (i = 0; i < _UNIT_TYPE_MAX; i++) {
5341                 t = unit_type_to_string(i);
5342                 if (t)
5343                         puts(t);
5344         }
5345
5346         return 0;
5347 }
5348
5349 static int systemctl_parse_argv(int argc, char *argv[]) {
5350
5351         enum {
5352                 ARG_FAIL = 0x100,
5353                 ARG_REVERSE,
5354                 ARG_AFTER,
5355                 ARG_BEFORE,
5356                 ARG_SHOW_TYPES,
5357                 ARG_IRREVERSIBLE,
5358                 ARG_IGNORE_DEPENDENCIES,
5359                 ARG_VERSION,
5360                 ARG_USER,
5361                 ARG_SYSTEM,
5362                 ARG_GLOBAL,
5363                 ARG_NO_BLOCK,
5364                 ARG_NO_LEGEND,
5365                 ARG_NO_PAGER,
5366                 ARG_NO_WALL,
5367                 ARG_ROOT,
5368                 ARG_NO_RELOAD,
5369                 ARG_KILL_WHO,
5370                 ARG_NO_ASK_PASSWORD,
5371                 ARG_FAILED,
5372                 ARG_RUNTIME,
5373                 ARG_FORCE,
5374                 ARG_PLAIN,
5375                 ARG_STATE,
5376                 ARG_JOB_MODE
5377         };
5378
5379         static const struct option options[] = {
5380                 { "help",                no_argument,       NULL, 'h'                     },
5381                 { "version",             no_argument,       NULL, ARG_VERSION             },
5382                 { "type",                required_argument, NULL, 't'                     },
5383                 { "property",            required_argument, NULL, 'p'                     },
5384                 { "all",                 no_argument,       NULL, 'a'                     },
5385                 { "reverse",             no_argument,       NULL, ARG_REVERSE             },
5386                 { "after",               no_argument,       NULL, ARG_AFTER               },
5387                 { "before",              no_argument,       NULL, ARG_BEFORE              },
5388                 { "show-types",          no_argument,       NULL, ARG_SHOW_TYPES          },
5389                 { "failed",              no_argument,       NULL, ARG_FAILED              }, /* compatibility only */
5390                 { "full",                no_argument,       NULL, 'l'                     },
5391                 { "job-mode",            required_argument, NULL, ARG_JOB_MODE            },
5392                 { "fail",                no_argument,       NULL, ARG_FAIL                }, /* compatibility only */
5393                 { "irreversible",        no_argument,       NULL, ARG_IRREVERSIBLE        }, /* compatibility only */
5394                 { "ignore-dependencies", no_argument,       NULL, ARG_IGNORE_DEPENDENCIES }, /* compatibility only */
5395                 { "ignore-inhibitors",   no_argument,       NULL, 'i'                     },
5396                 { "user",                no_argument,       NULL, ARG_USER                },
5397                 { "system",              no_argument,       NULL, ARG_SYSTEM              },
5398                 { "global",              no_argument,       NULL, ARG_GLOBAL              },
5399                 { "no-block",            no_argument,       NULL, ARG_NO_BLOCK            },
5400                 { "no-legend",           no_argument,       NULL, ARG_NO_LEGEND           },
5401                 { "no-pager",            no_argument,       NULL, ARG_NO_PAGER            },
5402                 { "no-wall",             no_argument,       NULL, ARG_NO_WALL             },
5403                 { "quiet",               no_argument,       NULL, 'q'                     },
5404                 { "root",                required_argument, NULL, ARG_ROOT                },
5405                 { "force",               no_argument,       NULL, ARG_FORCE               },
5406                 { "no-reload",           no_argument,       NULL, ARG_NO_RELOAD           },
5407                 { "kill-who",            required_argument, NULL, ARG_KILL_WHO            },
5408                 { "signal",              required_argument, NULL, 's'                     },
5409                 { "no-ask-password",     no_argument,       NULL, ARG_NO_ASK_PASSWORD     },
5410                 { "host",                required_argument, NULL, 'H'                     },
5411                 { "machine",             required_argument, NULL, 'M'                     },
5412                 { "runtime",             no_argument,       NULL, ARG_RUNTIME             },
5413                 { "lines",               required_argument, NULL, 'n'                     },
5414                 { "output",              required_argument, NULL, 'o'                     },
5415                 { "plain",               no_argument,       NULL, ARG_PLAIN               },
5416                 { "state",               required_argument, NULL, ARG_STATE               },
5417                 {}
5418         };
5419
5420         int c;
5421
5422         assert(argc >= 0);
5423         assert(argv);
5424
5425         while ((c = getopt_long(argc, argv, "ht:p:alqfs:H:M:n:o:i", options, NULL)) >= 0) {
5426
5427                 switch (c) {
5428
5429                 case 'h':
5430                         return systemctl_help();
5431
5432                 case ARG_VERSION:
5433                         puts(PACKAGE_STRING);
5434                         puts(SYSTEMD_FEATURES);
5435                         return 0;
5436
5437                 case 't': {
5438                         char *word, *state;
5439                         size_t size;
5440
5441                         FOREACH_WORD_SEPARATOR(word, size, optarg, ",", state) {
5442                                 _cleanup_free_ char *type;
5443
5444                                 type = strndup(word, size);
5445                                 if (!type)
5446                                         return -ENOMEM;
5447
5448                                 if (streq(type, "help")) {
5449                                         help_types();
5450                                         return 0;
5451                                 }
5452
5453                                 if (unit_type_from_string(type) >= 0) {
5454                                         if (strv_push(&arg_types, type))
5455                                                 return log_oom();
5456                                         type = NULL;
5457                                         continue;
5458                                 }
5459
5460                                 /* It's much nicer to use --state= for
5461                                  * load states, but let's support this
5462                                  * in --types= too for compatibility
5463                                  * with old versions */
5464                                 if (unit_load_state_from_string(optarg) >= 0) {
5465                                         if (strv_push(&arg_states, type) < 0)
5466                                                 return log_oom();
5467                                         type = NULL;
5468                                         continue;
5469                                 }
5470
5471                                 log_error("Unknown unit type or load state '%s'.", type);
5472                                 log_info("Use -t help to see a list of allowed values.");
5473                                 return -EINVAL;
5474                         }
5475
5476                         break;
5477                 }
5478
5479                 case 'p': {
5480                         /* Make sure that if the empty property list
5481                            was specified, we won't show any properties. */
5482                         if (isempty(optarg) && !arg_properties) {
5483                                 arg_properties = new0(char*, 1);
5484                                 if (!arg_properties)
5485                                         return log_oom();
5486                         } else {
5487                                 char *word, *state;
5488                                 size_t size;
5489
5490                                 FOREACH_WORD_SEPARATOR(word, size, optarg, ",", state) {
5491                                         char *prop;
5492
5493                                         prop = strndup(word, size);
5494                                         if (!prop)
5495                                                 return log_oom();
5496
5497                                         if (strv_consume(&arg_properties, prop) < 0)
5498                                                 return log_oom();
5499                                 }
5500                         }
5501
5502                         /* If the user asked for a particular
5503                          * property, show it to him, even if it is
5504                          * empty. */
5505                         arg_all = true;
5506
5507                         break;
5508                 }
5509
5510                 case 'a':
5511                         arg_all = true;
5512                         break;
5513
5514                 case ARG_REVERSE:
5515                         arg_dependency = DEPENDENCY_REVERSE;
5516                         break;
5517
5518                 case ARG_AFTER:
5519                         arg_dependency = DEPENDENCY_AFTER;
5520                         break;
5521
5522                 case ARG_BEFORE:
5523                         arg_dependency = DEPENDENCY_BEFORE;
5524                         break;
5525
5526                 case ARG_SHOW_TYPES:
5527                         arg_show_types = true;
5528                         break;
5529
5530                 case ARG_JOB_MODE:
5531                         arg_job_mode = optarg;
5532                         break;
5533
5534                 case ARG_FAIL:
5535                         arg_job_mode = "fail";
5536                         break;
5537
5538                 case ARG_IRREVERSIBLE:
5539                         arg_job_mode = "replace-irreversibly";
5540                         break;
5541
5542                 case ARG_IGNORE_DEPENDENCIES:
5543                         arg_job_mode = "ignore-dependencies";
5544                         break;
5545
5546                 case ARG_USER:
5547                         arg_scope = UNIT_FILE_USER;
5548                         break;
5549
5550                 case ARG_SYSTEM:
5551                         arg_scope = UNIT_FILE_SYSTEM;
5552                         break;
5553
5554                 case ARG_GLOBAL:
5555                         arg_scope = UNIT_FILE_GLOBAL;
5556                         break;
5557
5558                 case ARG_NO_BLOCK:
5559                         arg_no_block = true;
5560                         break;
5561
5562                 case ARG_NO_LEGEND:
5563                         arg_no_legend = true;
5564                         break;
5565
5566                 case ARG_NO_PAGER:
5567                         arg_no_pager = true;
5568                         break;
5569
5570                 case ARG_NO_WALL:
5571                         arg_no_wall = true;
5572                         break;
5573
5574                 case ARG_ROOT:
5575                         arg_root = optarg;
5576                         break;
5577
5578                 case 'l':
5579                         arg_full = true;
5580                         break;
5581
5582                 case ARG_FAILED:
5583                         if (strv_extend(&arg_states, "failed") < 0)
5584                                 return log_oom();
5585
5586                         break;
5587
5588                 case 'q':
5589                         arg_quiet = true;
5590                         break;
5591
5592                 case ARG_FORCE:
5593                         arg_force ++;
5594                         break;
5595
5596                 case 'f':
5597                         arg_force ++;
5598                         break;
5599
5600                 case ARG_NO_RELOAD:
5601                         arg_no_reload = true;
5602                         break;
5603
5604                 case ARG_KILL_WHO:
5605                         arg_kill_who = optarg;
5606                         break;
5607
5608                 case 's':
5609                         if ((arg_signal = signal_from_string_try_harder(optarg)) < 0) {
5610                                 log_error("Failed to parse signal string %s.", optarg);
5611                                 return -EINVAL;
5612                         }
5613                         break;
5614
5615                 case ARG_NO_ASK_PASSWORD:
5616                         arg_ask_password = false;
5617                         break;
5618
5619                 case 'H':
5620                         arg_transport = BUS_TRANSPORT_REMOTE;
5621                         arg_host = optarg;
5622                         break;
5623
5624                 case 'M':
5625                         arg_transport = BUS_TRANSPORT_CONTAINER;
5626                         arg_host = optarg;
5627                         break;
5628
5629                 case ARG_RUNTIME:
5630                         arg_runtime = true;
5631                         break;
5632
5633                 case 'n':
5634                         if (safe_atou(optarg, &arg_lines) < 0) {
5635                                 log_error("Failed to parse lines '%s'", optarg);
5636                                 return -EINVAL;
5637                         }
5638                         break;
5639
5640                 case 'o':
5641                         arg_output = output_mode_from_string(optarg);
5642                         if (arg_output < 0) {
5643                                 log_error("Unknown output '%s'.", optarg);
5644                                 return -EINVAL;
5645                         }
5646                         break;
5647
5648                 case 'i':
5649                         arg_ignore_inhibitors = true;
5650                         break;
5651
5652                 case ARG_PLAIN:
5653                         arg_plain = true;
5654                         break;
5655
5656                 case ARG_STATE: {
5657                         char *word, *state;
5658                         size_t size;
5659
5660                         FOREACH_WORD_SEPARATOR(word, size, optarg, ",", state) {
5661                                 char *s;
5662
5663                                 s = strndup(word, size);
5664                                 if (!s)
5665                                         return log_oom();
5666
5667                                 if (strv_consume(&arg_states, s) < 0)
5668                                         return log_oom();
5669                         }
5670                         break;
5671                 }
5672
5673                 case '?':
5674                         return -EINVAL;
5675
5676                 default:
5677                         assert_not_reached("Unhandled option");
5678                 }
5679         }
5680
5681         if (arg_transport != BUS_TRANSPORT_LOCAL && arg_scope != UNIT_FILE_SYSTEM) {
5682                 log_error("Cannot access user instance remotely.");
5683                 return -EINVAL;
5684         }
5685
5686         return 1;
5687 }
5688
5689 static int halt_parse_argv(int argc, char *argv[]) {
5690
5691         enum {
5692                 ARG_HELP = 0x100,
5693                 ARG_HALT,
5694                 ARG_REBOOT,
5695                 ARG_NO_WALL
5696         };
5697
5698         static const struct option options[] = {
5699                 { "help",      no_argument,       NULL, ARG_HELP    },
5700                 { "halt",      no_argument,       NULL, ARG_HALT    },
5701                 { "poweroff",  no_argument,       NULL, 'p'         },
5702                 { "reboot",    no_argument,       NULL, ARG_REBOOT  },
5703                 { "force",     no_argument,       NULL, 'f'         },
5704                 { "wtmp-only", no_argument,       NULL, 'w'         },
5705                 { "no-wtmp",   no_argument,       NULL, 'd'         },
5706                 { "no-wall",   no_argument,       NULL, ARG_NO_WALL },
5707                 {}
5708         };
5709
5710         int c, r, runlevel;
5711
5712         assert(argc >= 0);
5713         assert(argv);
5714
5715         if (utmp_get_runlevel(&runlevel, NULL) >= 0)
5716                 if (runlevel == '0' || runlevel == '6')
5717                         arg_force = 2;
5718
5719         while ((c = getopt_long(argc, argv, "pfwdnih", options, NULL)) >= 0) {
5720                 switch (c) {
5721
5722                 case ARG_HELP:
5723                         return halt_help();
5724
5725                 case ARG_HALT:
5726                         arg_action = ACTION_HALT;
5727                         break;
5728
5729                 case 'p':
5730                         if (arg_action != ACTION_REBOOT)
5731                                 arg_action = ACTION_POWEROFF;
5732                         break;
5733
5734                 case ARG_REBOOT:
5735                         arg_action = ACTION_REBOOT;
5736                         break;
5737
5738                 case 'f':
5739                         arg_force = 2;
5740                         break;
5741
5742                 case 'w':
5743                         arg_dry = true;
5744                         break;
5745
5746                 case 'd':
5747                         arg_no_wtmp = true;
5748                         break;
5749
5750                 case ARG_NO_WALL:
5751                         arg_no_wall = true;
5752                         break;
5753
5754                 case 'i':
5755                 case 'h':
5756                 case 'n':
5757                         /* Compatibility nops */
5758                         break;
5759
5760                 case '?':
5761                         return -EINVAL;
5762
5763                 default:
5764                         assert_not_reached("Unhandled option");
5765                 }
5766         }
5767
5768         if (arg_action == ACTION_REBOOT && argc == optind + 1) {
5769                 r = write_string_file(REBOOT_PARAM_FILE, argv[optind]);
5770                 if (r < 0) {
5771                         log_error("Failed to write reboot param to "
5772                                   REBOOT_PARAM_FILE": %s", strerror(-r));
5773                         return r;
5774                 }
5775         } else if (optind < argc) {
5776                 log_error("Too many arguments.");
5777                 return -EINVAL;
5778         }
5779
5780         return 1;
5781 }
5782
5783 static int parse_time_spec(const char *t, usec_t *_u) {
5784         assert(t);
5785         assert(_u);
5786
5787         if (streq(t, "now"))
5788                 *_u = 0;
5789         else if (!strchr(t, ':')) {
5790                 uint64_t u;
5791
5792                 if (safe_atou64(t, &u) < 0)
5793                         return -EINVAL;
5794
5795                 *_u = now(CLOCK_REALTIME) + USEC_PER_MINUTE * u;
5796         } else {
5797                 char *e = NULL;
5798                 long hour, minute;
5799                 struct tm tm = {};
5800                 time_t s;
5801                 usec_t n;
5802
5803                 errno = 0;
5804                 hour = strtol(t, &e, 10);
5805                 if (errno > 0 || *e != ':' || hour < 0 || hour > 23)
5806                         return -EINVAL;
5807
5808                 minute = strtol(e+1, &e, 10);
5809                 if (errno > 0 || *e != 0 || minute < 0 || minute > 59)
5810                         return -EINVAL;
5811
5812                 n = now(CLOCK_REALTIME);
5813                 s = (time_t) (n / USEC_PER_SEC);
5814
5815                 assert_se(localtime_r(&s, &tm));
5816
5817                 tm.tm_hour = (int) hour;
5818                 tm.tm_min = (int) minute;
5819                 tm.tm_sec = 0;
5820
5821                 assert_se(s = mktime(&tm));
5822
5823                 *_u = (usec_t) s * USEC_PER_SEC;
5824
5825                 while (*_u <= n)
5826                         *_u += USEC_PER_DAY;
5827         }
5828
5829         return 0;
5830 }
5831
5832 static int shutdown_parse_argv(int argc, char *argv[]) {
5833
5834         enum {
5835                 ARG_HELP = 0x100,
5836                 ARG_NO_WALL
5837         };
5838
5839         static const struct option options[] = {
5840                 { "help",      no_argument,       NULL, ARG_HELP    },
5841                 { "halt",      no_argument,       NULL, 'H'         },
5842                 { "poweroff",  no_argument,       NULL, 'P'         },
5843                 { "reboot",    no_argument,       NULL, 'r'         },
5844                 { "kexec",     no_argument,       NULL, 'K'         }, /* not documented extension */
5845                 { "no-wall",   no_argument,       NULL, ARG_NO_WALL },
5846                 {}
5847         };
5848
5849         int c, r;
5850
5851         assert(argc >= 0);
5852         assert(argv);
5853
5854         while ((c = getopt_long(argc, argv, "HPrhkt:afFc", options, NULL)) >= 0) {
5855                 switch (c) {
5856
5857                 case ARG_HELP:
5858                         return shutdown_help();
5859
5860                 case 'H':
5861                         arg_action = ACTION_HALT;
5862                         break;
5863
5864                 case 'P':
5865                         arg_action = ACTION_POWEROFF;
5866                         break;
5867
5868                 case 'r':
5869                         if (kexec_loaded())
5870                                 arg_action = ACTION_KEXEC;
5871                         else
5872                                 arg_action = ACTION_REBOOT;
5873                         break;
5874
5875                 case 'K':
5876                         arg_action = ACTION_KEXEC;
5877                         break;
5878
5879                 case 'h':
5880                         if (arg_action != ACTION_HALT)
5881                                 arg_action = ACTION_POWEROFF;
5882                         break;
5883
5884                 case 'k':
5885                         arg_dry = true;
5886                         break;
5887
5888                 case ARG_NO_WALL:
5889                         arg_no_wall = true;
5890                         break;
5891
5892                 case 't':
5893                 case 'a':
5894                         /* Compatibility nops */
5895                         break;
5896
5897                 case 'c':
5898                         arg_action = ACTION_CANCEL_SHUTDOWN;
5899                         break;
5900
5901                 case '?':
5902                         return -EINVAL;
5903
5904                 default:
5905                         assert_not_reached("Unhandled option");
5906                 }
5907         }
5908
5909         if (argc > optind && arg_action != ACTION_CANCEL_SHUTDOWN) {
5910                 r = parse_time_spec(argv[optind], &arg_when);
5911                 if (r < 0) {
5912                         log_error("Failed to parse time specification: %s", argv[optind]);
5913                         return r;
5914                 }
5915         } else
5916                 arg_when = now(CLOCK_REALTIME) + USEC_PER_MINUTE;
5917
5918         if (argc > optind && arg_action == ACTION_CANCEL_SHUTDOWN)
5919                 /* No time argument for shutdown cancel */
5920                 arg_wall = argv + optind;
5921         else if (argc > optind + 1)
5922                 /* We skip the time argument */
5923                 arg_wall = argv + optind + 1;
5924
5925         optind = argc;
5926
5927         return 1;
5928 }
5929
5930 static int telinit_parse_argv(int argc, char *argv[]) {
5931
5932         enum {
5933                 ARG_HELP = 0x100,
5934                 ARG_NO_WALL
5935         };
5936
5937         static const struct option options[] = {
5938                 { "help",      no_argument,       NULL, ARG_HELP    },
5939                 { "no-wall",   no_argument,       NULL, ARG_NO_WALL },
5940                 {}
5941         };
5942
5943         static const struct {
5944                 char from;
5945                 enum action to;
5946         } table[] = {
5947                 { '0', ACTION_POWEROFF },
5948                 { '6', ACTION_REBOOT },
5949                 { '1', ACTION_RESCUE },
5950                 { '2', ACTION_RUNLEVEL2 },
5951                 { '3', ACTION_RUNLEVEL3 },
5952                 { '4', ACTION_RUNLEVEL4 },
5953                 { '5', ACTION_RUNLEVEL5 },
5954                 { 's', ACTION_RESCUE },
5955                 { 'S', ACTION_RESCUE },
5956                 { 'q', ACTION_RELOAD },
5957                 { 'Q', ACTION_RELOAD },
5958                 { 'u', ACTION_REEXEC },
5959                 { 'U', ACTION_REEXEC }
5960         };
5961
5962         unsigned i;
5963         int c;
5964
5965         assert(argc >= 0);
5966         assert(argv);
5967
5968         while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) {
5969                 switch (c) {
5970
5971                 case ARG_HELP:
5972                         return telinit_help();
5973
5974                 case ARG_NO_WALL:
5975                         arg_no_wall = true;
5976                         break;
5977
5978                 case '?':
5979                         return -EINVAL;
5980
5981                 default:
5982                         assert_not_reached("Unhandled option");
5983                 }
5984         }
5985
5986         if (optind >= argc) {
5987                 telinit_help();
5988                 return -EINVAL;
5989         }
5990
5991         if (optind + 1 < argc) {
5992                 log_error("Too many arguments.");
5993                 return -EINVAL;
5994         }
5995
5996         if (strlen(argv[optind]) != 1) {
5997                 log_error("Expected single character argument.");
5998                 return -EINVAL;
5999         }
6000
6001         for (i = 0; i < ELEMENTSOF(table); i++)
6002                 if (table[i].from == argv[optind][0])
6003                         break;
6004
6005         if (i >= ELEMENTSOF(table)) {
6006                 log_error("Unknown command '%s'.", argv[optind]);
6007                 return -EINVAL;
6008         }
6009
6010         arg_action = table[i].to;
6011
6012         optind ++;
6013
6014         return 1;
6015 }
6016
6017 static int runlevel_parse_argv(int argc, char *argv[]) {
6018
6019         enum {
6020                 ARG_HELP = 0x100,
6021         };
6022
6023         static const struct option options[] = {
6024                 { "help",      no_argument,       NULL, ARG_HELP    },
6025                 {}
6026         };
6027
6028         int c;
6029
6030         assert(argc >= 0);
6031         assert(argv);
6032
6033         while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) {
6034                 switch (c) {
6035
6036                 case ARG_HELP:
6037                         return runlevel_help();
6038
6039                 case '?':
6040                         return -EINVAL;
6041
6042                 default:
6043                         assert_not_reached("Unhandled option");
6044                 }
6045         }
6046
6047         if (optind < argc) {
6048                 log_error("Too many arguments.");
6049                 return -EINVAL;
6050         }
6051
6052         return 1;
6053 }
6054
6055 static int parse_argv(int argc, char *argv[]) {
6056         assert(argc >= 0);
6057         assert(argv);
6058
6059         if (program_invocation_short_name) {
6060
6061                 if (strstr(program_invocation_short_name, "halt")) {
6062                         arg_action = ACTION_HALT;
6063                         return halt_parse_argv(argc, argv);
6064                 } else if (strstr(program_invocation_short_name, "poweroff")) {
6065                         arg_action = ACTION_POWEROFF;
6066                         return halt_parse_argv(argc, argv);
6067                 } else if (strstr(program_invocation_short_name, "reboot")) {
6068                         if (kexec_loaded())
6069                                 arg_action = ACTION_KEXEC;
6070                         else
6071                                 arg_action = ACTION_REBOOT;
6072                         return halt_parse_argv(argc, argv);
6073                 } else if (strstr(program_invocation_short_name, "shutdown")) {
6074                         arg_action = ACTION_POWEROFF;
6075                         return shutdown_parse_argv(argc, argv);
6076                 } else if (strstr(program_invocation_short_name, "init")) {
6077
6078                         if (sd_booted() > 0) {
6079                                 arg_action = _ACTION_INVALID;
6080                                 return telinit_parse_argv(argc, argv);
6081                         } else {
6082                                 /* Hmm, so some other init system is
6083                                  * running, we need to forward this
6084                                  * request to it. For now we simply
6085                                  * guess that it is Upstart. */
6086
6087                                 execv(TELINIT, argv);
6088
6089                                 log_error("Couldn't find an alternative telinit implementation to spawn.");
6090                                 return -EIO;
6091                         }
6092
6093                 } else if (strstr(program_invocation_short_name, "runlevel")) {
6094                         arg_action = ACTION_RUNLEVEL;
6095                         return runlevel_parse_argv(argc, argv);
6096                 }
6097         }
6098
6099         arg_action = ACTION_SYSTEMCTL;
6100         return systemctl_parse_argv(argc, argv);
6101 }
6102
6103 _pure_ static int action_to_runlevel(void) {
6104
6105         static const char table[_ACTION_MAX] = {
6106                 [ACTION_HALT] =      '0',
6107                 [ACTION_POWEROFF] =  '0',
6108                 [ACTION_REBOOT] =    '6',
6109                 [ACTION_RUNLEVEL2] = '2',
6110                 [ACTION_RUNLEVEL3] = '3',
6111                 [ACTION_RUNLEVEL4] = '4',
6112                 [ACTION_RUNLEVEL5] = '5',
6113                 [ACTION_RESCUE] =    '1'
6114         };
6115
6116         assert(arg_action < _ACTION_MAX);
6117
6118         return table[arg_action];
6119 }
6120
6121 static int talk_initctl(void) {
6122
6123         struct init_request request = {
6124                 .magic = INIT_MAGIC,
6125                 .sleeptime  = 0,
6126                 .cmd = INIT_CMD_RUNLVL
6127         };
6128
6129         _cleanup_close_ int fd = -1;
6130         char rl;
6131         int r;
6132
6133         rl = action_to_runlevel();
6134         if (!rl)
6135                 return 0;
6136
6137         request.runlevel = rl;
6138
6139         fd = open(INIT_FIFO, O_WRONLY|O_NDELAY|O_CLOEXEC|O_NOCTTY);
6140         if (fd < 0) {
6141                 if (errno == ENOENT)
6142                         return 0;
6143
6144                 log_error("Failed to open "INIT_FIFO": %m");
6145                 return -errno;
6146         }
6147
6148         errno = 0;
6149         r = loop_write(fd, &request, sizeof(request), false) != sizeof(request);
6150         if (r) {
6151                 log_error("Failed to write to "INIT_FIFO": %m");
6152                 return errno > 0 ? -errno : -EIO;
6153         }
6154
6155         return 1;
6156 }
6157
6158 static int systemctl_main(sd_bus *bus, int argc, char *argv[], int bus_error) {
6159
6160         static const struct {
6161                 const char* verb;
6162                 const enum {
6163                         MORE,
6164                         LESS,
6165                         EQUAL
6166                 } argc_cmp;
6167                 const int argc;
6168                 int (* const dispatch)(sd_bus *bus, char **args);
6169                 const enum {
6170                         NOBUS = 1,
6171                         FORCE,
6172                 } bus;
6173         } verbs[] = {
6174                 { "list-units",            MORE,  0, list_units        },
6175                 { "list-unit-files",       MORE,  1, list_unit_files,  NOBUS },
6176                 { "list-sockets",          MORE,  1, list_sockets      },
6177                 { "list-timers",           MORE,  1, list_timers       },
6178                 { "list-jobs",             MORE,  1, list_jobs         },
6179                 { "list-machines",         MORE,  1, list_machines     },
6180                 { "clear-jobs",            EQUAL, 1, daemon_reload     },
6181                 { "cancel",                MORE,  2, cancel_job        },
6182                 { "start",                 MORE,  2, start_unit        },
6183                 { "stop",                  MORE,  2, start_unit        },
6184                 { "condstop",              MORE,  2, start_unit        }, /* For compatibility with ALTLinux */
6185                 { "reload",                MORE,  2, start_unit        },
6186                 { "restart",               MORE,  2, start_unit        },
6187                 { "try-restart",           MORE,  2, start_unit        },
6188                 { "reload-or-restart",     MORE,  2, start_unit        },
6189                 { "reload-or-try-restart", MORE,  2, start_unit        },
6190                 { "force-reload",          MORE,  2, start_unit        }, /* For compatibility with SysV */
6191                 { "condreload",            MORE,  2, start_unit        }, /* For compatibility with ALTLinux */
6192                 { "condrestart",           MORE,  2, start_unit        }, /* For compatibility with RH */
6193                 { "isolate",               EQUAL, 2, start_unit        },
6194                 { "kill",                  MORE,  2, kill_unit         },
6195                 { "is-active",             MORE,  2, check_unit_active },
6196                 { "check",                 MORE,  2, check_unit_active },
6197                 { "is-failed",             MORE,  2, check_unit_failed },
6198                 { "show",                  MORE,  1, show              },
6199                 { "cat",                   MORE,  2, cat               },
6200                 { "status",                MORE,  1, show              },
6201                 { "help",                  MORE,  2, show              },
6202                 { "snapshot",              LESS,  2, snapshot          },
6203                 { "delete",                MORE,  2, delete_snapshot   },
6204                 { "daemon-reload",         EQUAL, 1, daemon_reload     },
6205                 { "daemon-reexec",         EQUAL, 1, daemon_reload     },
6206                 { "show-environment",      EQUAL, 1, show_environment  },
6207                 { "set-environment",       MORE,  2, set_environment   },
6208                 { "unset-environment",     MORE,  2, set_environment   },
6209                 { "import-environment",    MORE,  1, import_environment},
6210                 { "halt",                  EQUAL, 1, start_special,    FORCE },
6211                 { "poweroff",              EQUAL, 1, start_special,    FORCE },
6212                 { "reboot",                EQUAL, 1, start_special,    FORCE },
6213                 { "kexec",                 EQUAL, 1, start_special     },
6214                 { "suspend",               EQUAL, 1, start_special     },
6215                 { "hibernate",             EQUAL, 1, start_special     },
6216                 { "hybrid-sleep",          EQUAL, 1, start_special     },
6217                 { "default",               EQUAL, 1, start_special     },
6218                 { "rescue",                EQUAL, 1, start_special     },
6219                 { "emergency",             EQUAL, 1, start_special     },
6220                 { "exit",                  EQUAL, 1, start_special     },
6221                 { "reset-failed",          MORE,  1, reset_failed      },
6222                 { "enable",                MORE,  2, enable_unit,      NOBUS },
6223                 { "disable",               MORE,  2, enable_unit,      NOBUS },
6224                 { "is-enabled",            MORE,  2, unit_is_enabled,  NOBUS },
6225                 { "reenable",              MORE,  2, enable_unit,      NOBUS },
6226                 { "preset",                MORE,  2, enable_unit,      NOBUS },
6227                 { "mask",                  MORE,  2, enable_unit,      NOBUS },
6228                 { "unmask",                MORE,  2, enable_unit,      NOBUS },
6229                 { "link",                  MORE,  2, enable_unit,      NOBUS },
6230                 { "switch-root",           MORE,  2, switch_root       },
6231                 { "list-dependencies",     LESS,  2, list_dependencies },
6232                 { "set-default",           EQUAL, 2, set_default,      NOBUS },
6233                 { "get-default",           EQUAL, 1, get_default,      NOBUS },
6234                 { "set-property",          MORE,  3, set_property      },
6235                 {}
6236         }, *verb = verbs;
6237
6238         int left;
6239
6240         assert(argc >= 0);
6241         assert(argv);
6242
6243         left = argc - optind;
6244
6245         /* Special rule: no arguments (left == 0) means "list-units" */
6246         if (left > 0) {
6247                 if (streq(argv[optind], "help") && !argv[optind+1]) {
6248                         log_error("This command expects one or more "
6249                                   "unit names. Did you mean --help?");
6250                         return -EINVAL;
6251                 }
6252
6253                 for (; verb->verb; verb++)
6254                         if (streq(argv[optind], verb->verb))
6255                                 goto found;
6256
6257                 log_error("Unknown operation '%s'.", argv[optind]);
6258                 return -EINVAL;
6259         }
6260 found:
6261
6262         switch (verb->argc_cmp) {
6263
6264         case EQUAL:
6265                 if (left != verb->argc) {
6266                         log_error("Invalid number of arguments.");
6267                         return -EINVAL;
6268                 }
6269
6270                 break;
6271
6272         case MORE:
6273                 if (left < verb->argc) {
6274                         log_error("Too few arguments.");
6275                         return -EINVAL;
6276                 }
6277
6278                 break;
6279
6280         case LESS:
6281                 if (left > verb->argc) {
6282                         log_error("Too many arguments.");
6283                         return -EINVAL;
6284                 }
6285
6286                 break;
6287
6288         default:
6289                 assert_not_reached("Unknown comparison operator.");
6290         }
6291
6292         /* Require a bus connection for all operations but
6293          * enable/disable */
6294         if (verb->bus == NOBUS) {
6295                 if (!bus && !avoid_bus()) {
6296                         log_error("Failed to get D-Bus connection: %s", strerror(-bus_error));
6297                         return -EIO;
6298                 }
6299
6300         } else {
6301                 if (running_in_chroot() > 0) {
6302                         log_info("Running in chroot, ignoring request.");
6303                         return 0;
6304                 }
6305
6306                 if ((verb->bus != FORCE || arg_force <= 0) && !bus) {
6307                         log_error("Failed to get D-Bus connection: %s", strerror(-bus_error));
6308                         return -EIO;
6309                 }
6310         }
6311
6312         return verb->dispatch(bus, argv + optind);
6313 }
6314
6315 static int send_shutdownd(usec_t t, char mode, bool dry_run, bool warn, const char *message) {
6316
6317         struct sd_shutdown_command c = {
6318                 .usec = t,
6319                 .mode = mode,
6320                 .dry_run = dry_run,
6321                 .warn_wall = warn,
6322         };
6323
6324         union sockaddr_union sockaddr = {
6325                 .un.sun_family = AF_UNIX,
6326                 .un.sun_path = "/run/systemd/shutdownd",
6327         };
6328
6329         struct iovec iovec[2] = {{
6330                  .iov_base = (char*) &c,
6331                  .iov_len = offsetof(struct sd_shutdown_command, wall_message),
6332         }};
6333
6334         struct msghdr msghdr = {
6335                 .msg_name = &sockaddr,
6336                 .msg_namelen = offsetof(struct sockaddr_un, sun_path)
6337                                + sizeof("/run/systemd/shutdownd") - 1,
6338                 .msg_iov = iovec,
6339                 .msg_iovlen = 1,
6340         };
6341
6342         _cleanup_close_ int fd;
6343
6344         fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0);
6345         if (fd < 0)
6346                 return -errno;
6347
6348         if (!isempty(message)) {
6349                 iovec[1].iov_base = (char*) message;
6350                 iovec[1].iov_len = strlen(message);
6351                 msghdr.msg_iovlen++;
6352         }
6353
6354         if (sendmsg(fd, &msghdr, MSG_NOSIGNAL) < 0)
6355                 return -errno;
6356
6357         return 0;
6358 }
6359
6360 static int reload_with_fallback(sd_bus *bus) {
6361
6362         if (bus) {
6363                 /* First, try systemd via D-Bus. */
6364                 if (daemon_reload(bus, NULL) >= 0)
6365                         return 0;
6366         }
6367
6368         /* Nothing else worked, so let's try signals */
6369         assert(arg_action == ACTION_RELOAD || arg_action == ACTION_REEXEC);
6370
6371         if (kill(1, arg_action == ACTION_RELOAD ? SIGHUP : SIGTERM) < 0) {
6372                 log_error("kill() failed: %m");
6373                 return -errno;
6374         }
6375
6376         return 0;
6377 }
6378
6379 static int start_with_fallback(sd_bus *bus) {
6380
6381         if (bus) {
6382                 /* First, try systemd via D-Bus. */
6383                 if (start_unit(bus, NULL) >= 0)
6384                         goto done;
6385         }
6386
6387         /* Nothing else worked, so let's try
6388          * /dev/initctl */
6389         if (talk_initctl() > 0)
6390                 goto done;
6391
6392         log_error("Failed to talk to init daemon.");
6393         return -EIO;
6394
6395 done:
6396         warn_wall(arg_action);
6397         return 0;
6398 }
6399
6400 static int halt_now(enum action a) {
6401
6402 /* Make sure C-A-D is handled by the kernel from this
6403          * point on... */
6404         reboot(RB_ENABLE_CAD);
6405
6406         switch (a) {
6407
6408         case ACTION_HALT:
6409                 log_info("Halting.");
6410                 reboot(RB_HALT_SYSTEM);
6411                 return -errno;
6412
6413         case ACTION_POWEROFF:
6414                 log_info("Powering off.");
6415                 reboot(RB_POWER_OFF);
6416                 return -errno;
6417
6418         case ACTION_REBOOT: {
6419                 _cleanup_free_ char *param = NULL;
6420
6421                 if (read_one_line_file(REBOOT_PARAM_FILE, &param) >= 0) {
6422                         log_info("Rebooting with argument '%s'.", param);
6423                         syscall(SYS_reboot, LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2,
6424                                 LINUX_REBOOT_CMD_RESTART2, param);
6425                 }
6426
6427                 log_info("Rebooting.");
6428                 reboot(RB_AUTOBOOT);
6429                 return -errno;
6430         }
6431
6432         default:
6433                 assert_not_reached("Unknown action.");
6434         }
6435 }
6436
6437 static int halt_main(sd_bus *bus) {
6438         int r;
6439
6440         r = check_inhibitors(bus, arg_action);
6441         if (r < 0)
6442                 return r;
6443
6444         if (geteuid() != 0) {
6445                 /* Try logind if we are a normal user and no special
6446                  * mode applies. Maybe PolicyKit allows us to shutdown
6447                  * the machine. */
6448
6449                 if (arg_when <= 0 &&
6450                     !arg_dry &&
6451                     arg_force <= 0 &&
6452                     (arg_action == ACTION_POWEROFF ||
6453                      arg_action == ACTION_REBOOT)) {
6454                         r = reboot_with_logind(bus, arg_action);
6455                         if (r >= 0)
6456                                 return r;
6457                 }
6458
6459                 log_error("Must be root.");
6460                 return -EPERM;
6461         }
6462
6463         if (arg_when > 0) {
6464                 _cleanup_free_ char *m;
6465
6466                 m = strv_join(arg_wall, " ");
6467                 if (!m)
6468                         return log_oom();
6469
6470                 r = send_shutdownd(arg_when,
6471                                    arg_action == ACTION_HALT     ? 'H' :
6472                                    arg_action == ACTION_POWEROFF ? 'P' :
6473                                    arg_action == ACTION_KEXEC    ? 'K' :
6474                                                                    'r',
6475                                    arg_dry,
6476                                    !arg_no_wall,
6477                                    m);
6478
6479                 if (r < 0)
6480                         log_warning("Failed to talk to shutdownd, proceeding with immediate shutdown: %s", strerror(-r));
6481                 else {
6482                         char date[FORMAT_TIMESTAMP_MAX];
6483
6484                         log_info("Shutdown scheduled for %s, use 'shutdown -c' to cancel.",
6485                                  format_timestamp(date, sizeof(date), arg_when));
6486                         return 0;
6487                 }
6488         }
6489
6490         if (!arg_dry && !arg_force)
6491                 return start_with_fallback(bus);
6492
6493         if (!arg_no_wtmp) {
6494                 if (sd_booted() > 0)
6495                         log_debug("Not writing utmp record, assuming that systemd-update-utmp is used.");
6496                 else {
6497                         r = utmp_put_shutdown();
6498                         if (r < 0)
6499                                 log_warning("Failed to write utmp record: %s", strerror(-r));
6500                 }
6501         }
6502
6503         if (arg_dry)
6504                 return 0;
6505
6506         r = halt_now(arg_action);
6507         log_error("Failed to reboot: %s", strerror(-r));
6508
6509         return r;
6510 }
6511
6512 static int runlevel_main(void) {
6513         int r, runlevel, previous;
6514
6515         r = utmp_get_runlevel(&runlevel, &previous);
6516         if (r < 0) {
6517                 puts("unknown");
6518                 return r;
6519         }
6520
6521         printf("%c %c\n",
6522                previous <= 0 ? 'N' : previous,
6523                runlevel <= 0 ? 'N' : runlevel);
6524
6525         return 0;
6526 }
6527
6528 int main(int argc, char*argv[]) {
6529         _cleanup_bus_unref_ sd_bus *bus = NULL;
6530         int r;
6531
6532         setlocale(LC_ALL, "");
6533         log_parse_environment();
6534         log_open();
6535
6536         /* Explicitly not on_tty() to avoid setting cached value.
6537          * This becomes relevant for piping output which might be
6538          * ellipsized. */
6539         original_stdout_is_tty = isatty(STDOUT_FILENO);
6540
6541         r = parse_argv(argc, argv);
6542         if (r <= 0)
6543                 goto finish;
6544
6545         /* /sbin/runlevel doesn't need to communicate via D-Bus, so
6546          * let's shortcut this */
6547         if (arg_action == ACTION_RUNLEVEL) {
6548                 r = runlevel_main();
6549                 goto finish;
6550         }
6551
6552         if (running_in_chroot() > 0 && arg_action != ACTION_SYSTEMCTL) {
6553                 log_info("Running in chroot, ignoring request.");
6554                 r = 0;
6555                 goto finish;
6556         }
6557
6558         if (!avoid_bus())
6559                 r = bus_open_transport_systemd(arg_transport, arg_host, arg_scope != UNIT_FILE_SYSTEM, &bus);
6560
6561         /* systemctl_main() will print an error message for the bus
6562          * connection, but only if it needs to */
6563
6564         switch (arg_action) {
6565
6566         case ACTION_SYSTEMCTL:
6567                 r = systemctl_main(bus, argc, argv, r);
6568                 break;
6569
6570         case ACTION_HALT:
6571         case ACTION_POWEROFF:
6572         case ACTION_REBOOT:
6573         case ACTION_KEXEC:
6574                 r = halt_main(bus);
6575                 break;
6576
6577         case ACTION_RUNLEVEL2:
6578         case ACTION_RUNLEVEL3:
6579         case ACTION_RUNLEVEL4:
6580         case ACTION_RUNLEVEL5:
6581         case ACTION_RESCUE:
6582         case ACTION_EMERGENCY:
6583         case ACTION_DEFAULT:
6584                 r = start_with_fallback(bus);
6585                 break;
6586
6587         case ACTION_RELOAD:
6588         case ACTION_REEXEC:
6589                 r = reload_with_fallback(bus);
6590                 break;
6591
6592         case ACTION_CANCEL_SHUTDOWN: {
6593                 _cleanup_free_ char *m = NULL;
6594
6595                 if (arg_wall) {
6596                         m = strv_join(arg_wall, " ");
6597                         if (!m) {
6598                                 r = log_oom();
6599                                 goto finish;
6600                         }
6601                 }
6602
6603                 r = send_shutdownd(arg_when, SD_SHUTDOWN_NONE, false, !arg_no_wall, m);
6604                 if (r < 0)
6605                         log_warning("Failed to talk to shutdownd, shutdown hasn't been cancelled: %s", strerror(-r));
6606                 break;
6607         }
6608
6609         case ACTION_RUNLEVEL:
6610         case _ACTION_INVALID:
6611         default:
6612                 assert_not_reached("Unknown action");
6613         }
6614
6615 finish:
6616         pager_close();
6617         ask_password_agent_close();
6618         polkit_agent_close();
6619
6620         strv_free(arg_types);
6621         strv_free(arg_states);
6622         strv_free(arg_properties);
6623
6624         return r < 0 ? EXIT_FAILURE : r;
6625 }