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                 pager_open_if_enabled();
4158                 show_system_status(bus);
4159                 new_line = true;
4160
4161                 if (arg_all)
4162                         ret = show_all(args[0], bus, false, &new_line, &ellipsized);
4163         } else {
4164                 _cleanup_free_ char **patterns = NULL;
4165                 char **name;
4166
4167                 STRV_FOREACH(name, args + 1) {
4168                         _cleanup_free_ char *unit = NULL;
4169                         uint32_t id;
4170
4171                         if (safe_atou32(*name, &id) < 0) {
4172                                 if (strv_push(&patterns, *name) < 0)
4173                                         return log_oom();
4174
4175                                 continue;
4176                         } else if (show_properties) {
4177                                 /* Interpret as job id */
4178                                 if (asprintf(&unit, "/org/freedesktop/systemd1/job/%u", id) < 0)
4179                                         return log_oom();
4180
4181                         } else {
4182                                 /* Interpret as PID */
4183                                 r = get_unit_dbus_path_by_pid(bus, id, &unit);
4184                                 if (r < 0) {
4185                                         ret = r;
4186                                         continue;
4187                                 }
4188                         }
4189
4190                         show_one(args[0], bus, unit, show_properties, &new_line, &ellipsized);
4191                 }
4192
4193                 if (!strv_isempty(patterns)) {
4194                         _cleanup_strv_free_ char **names = NULL;
4195
4196                         r = expand_names(bus, patterns, NULL, &names);
4197                         if (r < 0)
4198                                 log_error("Failed to expand names: %s", strerror(-r));
4199
4200                         STRV_FOREACH(name, names) {
4201                                 _cleanup_free_ char *unit;
4202
4203                                 unit = unit_dbus_path_from_name(*name);
4204                                 if (!unit)
4205                                         return log_oom();
4206
4207                                 show_one(args[0], bus, unit, show_properties, &new_line, &ellipsized);
4208                         }
4209                 }
4210         }
4211
4212         if (ellipsized && !arg_quiet)
4213                 printf("Hint: Some lines were ellipsized, use -l to show in full.\n");
4214
4215         return ret;
4216 }
4217
4218 static int cat(sd_bus *bus, char **args) {
4219         _cleanup_free_ char *unit = NULL;
4220         _cleanup_strv_free_ char **names = NULL;
4221         char **name;
4222         bool first = true;
4223         int r = 0;
4224
4225         assert(bus);
4226         assert(args);
4227
4228         r = expand_names(bus, args + 1, NULL, &names);
4229         if (r < 0)
4230                 log_error("Failed to expand names: %s", strerror(-r));
4231
4232         pager_open_if_enabled();
4233
4234         STRV_FOREACH(name, names) {
4235                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4236                 _cleanup_strv_free_ char **dropin_paths = NULL;
4237                 _cleanup_free_ char *fragment_path = NULL;
4238                 char **path;
4239
4240                 unit = unit_dbus_path_from_name(*name);
4241                 if (!unit)
4242                         return log_oom();
4243
4244                 if (need_daemon_reload(bus, *name) > 0)
4245                         log_warning("Unit file of %s changed on disk. Run 'systemctl%s daemon-reload'.",
4246                                     *name, arg_scope == UNIT_FILE_SYSTEM ? "" : " --user");
4247
4248                 r = sd_bus_get_property_string(
4249                                 bus,
4250                                 "org.freedesktop.systemd1",
4251                                 unit,
4252                                 "org.freedesktop.systemd1.Unit",
4253                                 "FragmentPath",
4254                                 &error,
4255                                 &fragment_path);
4256                 if (r < 0) {
4257                         log_warning("Failed to get FragmentPath: %s", bus_error_message(&error, r));
4258                         continue;
4259                 }
4260
4261                 r = sd_bus_get_property_strv(
4262                                 bus,
4263                                 "org.freedesktop.systemd1",
4264                                 unit,
4265                                 "org.freedesktop.systemd1.Unit",
4266                                 "DropInPaths",
4267                                 &error,
4268                                 &dropin_paths);
4269                 if (r < 0) {
4270                         log_warning("Failed to get DropInPaths: %s", bus_error_message(&error, r));
4271                         continue;
4272                 }
4273
4274                 if (first)
4275                         first = false;
4276                 else
4277                         puts("");
4278
4279                 if (!isempty(fragment_path)) {
4280                         printf("%s# %s%s\n",
4281                                ansi_highlight_blue(),
4282                                fragment_path,
4283                                ansi_highlight_off());
4284                         fflush(stdout);
4285
4286                         r = sendfile_full(STDOUT_FILENO, fragment_path);
4287                         if (r < 0) {
4288                                 log_warning("Failed to cat %s: %s", fragment_path, strerror(-r));
4289                                 continue;
4290                         }
4291                 }
4292
4293                 STRV_FOREACH(path, dropin_paths) {
4294                         printf("%s%s# %s%s\n",
4295                                isempty(fragment_path) && path == dropin_paths ? "" : "\n",
4296                                ansi_highlight_blue(),
4297                                *path,
4298                                ansi_highlight_off());
4299                         fflush(stdout);
4300
4301                         r = sendfile_full(STDOUT_FILENO, *path);
4302                         if (r < 0) {
4303                                 log_warning("Failed to cat %s: %s", *path, strerror(-r));
4304                                 continue;
4305                         }
4306                 }
4307         }
4308
4309         return r < 0 ? r : 0;
4310 }
4311
4312 static int set_property(sd_bus *bus, char **args) {
4313         _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
4314         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4315         _cleanup_free_ char *n = NULL;
4316         char **i;
4317         int r;
4318
4319         r = sd_bus_message_new_method_call(
4320                         bus,
4321                         &m,
4322                         "org.freedesktop.systemd1",
4323                         "/org/freedesktop/systemd1",
4324                         "org.freedesktop.systemd1.Manager",
4325                         "SetUnitProperties");
4326         if (r < 0)
4327                 return bus_log_create_error(r);
4328
4329         n = unit_name_mangle(args[1], MANGLE_NOGLOB);
4330         if (!n)
4331                 return log_oom();
4332
4333         r = sd_bus_message_append(m, "sb", n, arg_runtime);
4334         if (r < 0)
4335                 return bus_log_create_error(r);
4336
4337         r = sd_bus_message_open_container(m, SD_BUS_TYPE_ARRAY, "(sv)");
4338         if (r < 0)
4339                 return bus_log_create_error(r);
4340
4341         STRV_FOREACH(i, args + 2) {
4342                 r = sd_bus_message_open_container(m, SD_BUS_TYPE_STRUCT, "sv");
4343                 if (r < 0)
4344                         return bus_log_create_error(r);
4345
4346                 r = bus_append_unit_property_assignment(m, *i);
4347                 if (r < 0)
4348                         return r;
4349
4350                 r = sd_bus_message_close_container(m);
4351                 if (r < 0)
4352                         return bus_log_create_error(r);
4353         }
4354
4355         r = sd_bus_message_close_container(m);
4356         if (r < 0)
4357                 return bus_log_create_error(r);
4358
4359         r = sd_bus_call(bus, m, 0, &error, NULL);
4360         if (r < 0) {
4361                 log_error("Failed to set unit properties on %s: %s", n, bus_error_message(&error, r));
4362                 return r;
4363         }
4364
4365         return 0;
4366 }
4367
4368 static int snapshot(sd_bus *bus, char **args) {
4369         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4370         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
4371         _cleanup_free_ char *n = NULL, *id = NULL;
4372         const char *path;
4373         int r;
4374
4375         if (strv_length(args) > 1)
4376                 n = unit_name_mangle_with_suffix(args[1], MANGLE_NOGLOB, ".snapshot");
4377         else
4378                 n = strdup("");
4379         if (!n)
4380                 return log_oom();
4381
4382         r = sd_bus_call_method(
4383                         bus,
4384                         "org.freedesktop.systemd1",
4385                         "/org/freedesktop/systemd1",
4386                         "org.freedesktop.systemd1.Manager",
4387                         "CreateSnapshot",
4388                         &error,
4389                         &reply,
4390                         "sb", n, false);
4391         if (r < 0) {
4392                 log_error("Failed to create snapshot: %s", bus_error_message(&error, r));
4393                 return r;
4394         }
4395
4396         r = sd_bus_message_read(reply, "o", &path);
4397         if (r < 0)
4398                 return bus_log_parse_error(r);
4399
4400         r = sd_bus_get_property_string(
4401                         bus,
4402                         "org.freedesktop.systemd1",
4403                         path,
4404                         "org.freedesktop.systemd1.Unit",
4405                         "Id",
4406                         &error,
4407                         &id);
4408         if (r < 0) {
4409                 log_error("Failed to get ID of snapshot: %s", bus_error_message(&error, r));
4410                 return r;
4411         }
4412
4413         if (!arg_quiet)
4414                 puts(id);
4415
4416         return 0;
4417 }
4418
4419 static int delete_snapshot(sd_bus *bus, char **args) {
4420         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4421         _cleanup_strv_free_ char **names = NULL;
4422         char **name;
4423         int r, q;
4424
4425         assert(args);
4426
4427         r = expand_names(bus, args + 1, ".snapshot", &names);
4428         if (r < 0)
4429                 log_error("Failed to expand names: %s", strerror(-r));
4430
4431         STRV_FOREACH(name, names) {
4432                 q = sd_bus_call_method(
4433                                 bus,
4434                                 "org.freedesktop.systemd1",
4435                                 "/org/freedesktop/systemd1",
4436                                 "org.freedesktop.systemd1.Manager",
4437                                 "RemoveSnapshot",
4438                                 &error,
4439                                 NULL,
4440                                 "s", *name);
4441                 if (q < 0) {
4442                         log_error("Failed to remove snapshot %s: %s",
4443                                   *name, bus_error_message(&error, r));
4444                         if (r == 0)
4445                                 r = q;
4446                 }
4447         }
4448
4449         return r;
4450 }
4451
4452 static int daemon_reload(sd_bus *bus, char **args) {
4453         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4454         const char *method;
4455         int r;
4456
4457         if (arg_action == ACTION_RELOAD)
4458                 method = "Reload";
4459         else if (arg_action == ACTION_REEXEC)
4460                 method = "Reexecute";
4461         else {
4462                 assert(arg_action == ACTION_SYSTEMCTL);
4463
4464                 method =
4465                         streq(args[0], "clear-jobs")    ||
4466                         streq(args[0], "cancel")        ? "ClearJobs" :
4467                         streq(args[0], "daemon-reexec") ? "Reexecute" :
4468                         streq(args[0], "reset-failed")  ? "ResetFailed" :
4469                         streq(args[0], "halt")          ? "Halt" :
4470                         streq(args[0], "poweroff")      ? "PowerOff" :
4471                         streq(args[0], "reboot")        ? "Reboot" :
4472                         streq(args[0], "kexec")         ? "KExec" :
4473                         streq(args[0], "exit")          ? "Exit" :
4474                                     /* "daemon-reload" */ "Reload";
4475         }
4476
4477         r = sd_bus_call_method(
4478                         bus,
4479                         "org.freedesktop.systemd1",
4480                         "/org/freedesktop/systemd1",
4481                         "org.freedesktop.systemd1.Manager",
4482                         method,
4483                         &error,
4484                         NULL,
4485                         NULL);
4486
4487         if (r == -ENOENT && arg_action != ACTION_SYSTEMCTL)
4488                 /* There's always a fallback possible for
4489                  * legacy actions. */
4490                 r = -EADDRNOTAVAIL;
4491         else if ((r == -ETIMEDOUT || r == -ECONNRESET) && streq(method, "Reexecute"))
4492                 /* On reexecution, we expect a disconnect, not a
4493                  * reply */
4494                 r = 0;
4495         else if (r < 0)
4496                 log_error("Failed to execute operation: %s", bus_error_message(&error, r));
4497
4498         return r < 0 ? r : 0;
4499 }
4500
4501 static int reset_failed(sd_bus *bus, char **args) {
4502         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4503         _cleanup_strv_free_ char **names = NULL;
4504         char **name;
4505         int r, q;
4506
4507         if (strv_length(args) <= 1)
4508                 return daemon_reload(bus, args);
4509
4510         r = expand_names(bus, args + 1, NULL, &names);
4511         if (r < 0)
4512                 log_error("Failed to expand names: %s", strerror(-r));
4513
4514         STRV_FOREACH(name, names) {
4515                 q = sd_bus_call_method(
4516                                 bus,
4517                                 "org.freedesktop.systemd1",
4518                                 "/org/freedesktop/systemd1",
4519                                 "org.freedesktop.systemd1.Manager",
4520                                 "ResetFailedUnit",
4521                                 &error,
4522                                 NULL,
4523                                 "s", *name);
4524                 if (q < 0) {
4525                         log_error("Failed to reset failed state of unit %s: %s",
4526                                   *name, bus_error_message(&error, r));
4527                         if (r == 0)
4528                                 r = q;
4529                 }
4530         }
4531
4532         return r;
4533 }
4534
4535 static int show_environment(sd_bus *bus, char **args) {
4536         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4537         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
4538         const char *text;
4539         int r;
4540
4541         pager_open_if_enabled();
4542
4543         r = sd_bus_get_property(
4544                         bus,
4545                         "org.freedesktop.systemd1",
4546                         "/org/freedesktop/systemd1",
4547                         "org.freedesktop.systemd1.Manager",
4548                         "Environment",
4549                         &error,
4550                         &reply,
4551                         "as");
4552         if (r < 0) {
4553                 log_error("Failed to get environment: %s", bus_error_message(&error, r));
4554                 return r;
4555         }
4556
4557         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "s");
4558         if (r < 0)
4559                 return bus_log_parse_error(r);
4560
4561         while ((r = sd_bus_message_read_basic(reply, SD_BUS_TYPE_STRING, &text)) > 0)
4562                 puts(text);
4563         if (r < 0)
4564                 return bus_log_parse_error(r);
4565
4566         r = sd_bus_message_exit_container(reply);
4567         if (r < 0)
4568                 return bus_log_parse_error(r);
4569
4570         return 0;
4571 }
4572
4573 static int switch_root(sd_bus *bus, char **args) {
4574         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4575         _cleanup_free_ char *cmdline_init = NULL;
4576         const char *root, *init;
4577         unsigned l;
4578         int r;
4579
4580         l = strv_length(args);
4581         if (l < 2 || l > 3) {
4582                 log_error("Wrong number of arguments.");
4583                 return -EINVAL;
4584         }
4585
4586         root = args[1];
4587
4588         if (l >= 3)
4589                 init = args[2];
4590         else {
4591                 r = parse_env_file("/proc/cmdline", WHITESPACE,
4592                                    "init", &cmdline_init,
4593                                    NULL);
4594                 if (r < 0)
4595                         log_debug("Failed to parse /proc/cmdline: %s", strerror(-r));
4596
4597                 init = cmdline_init;
4598         }
4599
4600         if (isempty(init))
4601                 init = NULL;
4602
4603         if (init) {
4604                 const char *root_systemd_path = NULL, *root_init_path = NULL;
4605
4606                 root_systemd_path = strappenda(root, "/" SYSTEMD_BINARY_PATH);
4607                 root_init_path = strappenda3(root, "/", init);
4608
4609                 /* If the passed init is actually the same as the
4610                  * systemd binary, then let's suppress it. */
4611                 if (files_same(root_init_path, root_systemd_path) > 0)
4612                         init = NULL;
4613         }
4614
4615         log_debug("Switching root - root: %s; init: %s", root, strna(init));
4616
4617         r = sd_bus_call_method(
4618                         bus,
4619                         "org.freedesktop.systemd1",
4620                         "/org/freedesktop/systemd1",
4621                         "org.freedesktop.systemd1.Manager",
4622                         "SwitchRoot",
4623                         &error,
4624                         NULL,
4625                         "ss", root, init);
4626         if (r < 0) {
4627                 log_error("Failed to switch root: %s", bus_error_message(&error, r));
4628                 return r;
4629         }
4630
4631         return 0;
4632 }
4633
4634 static int set_environment(sd_bus *bus, char **args) {
4635         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4636         _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
4637         const char *method;
4638         int r;
4639
4640         assert(bus);
4641         assert(args);
4642
4643         method = streq(args[0], "set-environment")
4644                 ? "SetEnvironment"
4645                 : "UnsetEnvironment";
4646
4647         r = sd_bus_message_new_method_call(
4648                         bus,
4649                         &m,
4650                         "org.freedesktop.systemd1",
4651                         "/org/freedesktop/systemd1",
4652                         "org.freedesktop.systemd1.Manager",
4653                         method);
4654         if (r < 0)
4655                 return bus_log_create_error(r);
4656
4657         r = sd_bus_message_append_strv(m, args + 1);
4658         if (r < 0)
4659                 return bus_log_create_error(r);
4660
4661         r = sd_bus_call(bus, m, 0, &error, NULL);
4662         if (r < 0) {
4663                 log_error("Failed to set environment: %s", bus_error_message(&error, r));
4664                 return r;
4665         }
4666
4667         return 0;
4668 }
4669
4670 static int import_environment(sd_bus *bus, char **args) {
4671         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4672         _cleanup_bus_message_unref_ sd_bus_message *m = NULL;
4673         int r;
4674
4675         assert(bus);
4676         assert(args);
4677
4678         r = sd_bus_message_new_method_call(
4679                         bus,
4680                         &m,
4681                         "org.freedesktop.systemd1",
4682                         "/org/freedesktop/systemd1",
4683                         "org.freedesktop.systemd1.Manager",
4684                         "SetEnvironment");
4685         if (r < 0)
4686                 return bus_log_create_error(r);
4687
4688         if (strv_isempty(args + 1))
4689                 r = sd_bus_message_append_strv(m, environ);
4690         else {
4691                 char **a, **b;
4692
4693                 r = sd_bus_message_open_container(m, 'a', "s");
4694                 if (r < 0)
4695                         return bus_log_create_error(r);
4696
4697                 STRV_FOREACH(a, args + 1) {
4698
4699                         if (!env_name_is_valid(*a)) {
4700                                 log_error("Not a valid environment variable name: %s", *a);
4701                                 return -EINVAL;
4702                         }
4703
4704                         STRV_FOREACH(b, environ) {
4705                                 const char *eq;
4706
4707                                 eq = startswith(*b, *a);
4708                                 if (eq && *eq == '=') {
4709
4710                                         r = sd_bus_message_append(m, "s", *b);
4711                                         if (r < 0)
4712                                                 return bus_log_create_error(r);
4713
4714                                         break;
4715                                 }
4716                         }
4717                 }
4718
4719                 r = sd_bus_message_close_container(m);
4720         }
4721         if (r < 0)
4722                 return bus_log_create_error(r);
4723
4724         r = sd_bus_call(bus, m, 0, &error, NULL);
4725         if (r < 0) {
4726                 log_error("Failed to import environment: %s", bus_error_message(&error, r));
4727                 return r;
4728         }
4729
4730         return 0;
4731 }
4732
4733 static int enable_sysv_units(const char *verb, char **args) {
4734         int r = 0;
4735
4736 #if defined(HAVE_SYSV_COMPAT) && defined(HAVE_CHKCONFIG)
4737         unsigned f = 1, t = 1;
4738         _cleanup_lookup_paths_free_ LookupPaths paths = {};
4739
4740         if (arg_scope != UNIT_FILE_SYSTEM)
4741                 return 0;
4742
4743         if (!streq(verb, "enable") &&
4744             !streq(verb, "disable") &&
4745             !streq(verb, "is-enabled"))
4746                 return 0;
4747
4748         /* Processes all SysV units, and reshuffles the array so that
4749          * afterwards only the native units remain */
4750
4751         r = lookup_paths_init(&paths, SYSTEMD_SYSTEM, false, NULL, NULL, NULL);
4752         if (r < 0)
4753                 return r;
4754
4755         r = 0;
4756         for (f = 0; args[f]; f++) {
4757                 const char *name;
4758                 _cleanup_free_ char *p = NULL, *q = NULL;
4759                 bool found_native = false, found_sysv;
4760                 unsigned c = 1;
4761                 const char *argv[6] = { "/sbin/chkconfig", NULL, NULL, NULL, NULL };
4762                 char **k, *l;
4763                 int j;
4764                 pid_t pid;
4765                 siginfo_t status;
4766
4767                 name = args[f];
4768
4769                 if (!endswith(name, ".service"))
4770                         continue;
4771
4772                 if (path_is_absolute(name))
4773                         continue;
4774
4775                 STRV_FOREACH(k, paths.unit_path) {
4776                         if (!isempty(arg_root))
4777                                 asprintf(&p, "%s/%s/%s", arg_root, *k, name);
4778                         else
4779                                 asprintf(&p, "%s/%s", *k, name);
4780
4781                         if (!p) {
4782                                 r = log_oom();
4783                                 goto finish;
4784                         }
4785
4786                         found_native = access(p, F_OK) >= 0;
4787                         free(p);
4788                         p = NULL;
4789
4790                         if (found_native)
4791                                 break;
4792                 }
4793
4794                 if (found_native)
4795                         continue;
4796
4797                 if (!isempty(arg_root))
4798                         asprintf(&p, "%s/" SYSTEM_SYSVINIT_PATH "/%s", arg_root, name);
4799                 else
4800                         asprintf(&p, SYSTEM_SYSVINIT_PATH "/%s", name);
4801                 if (!p) {
4802                         r = log_oom();
4803                         goto finish;
4804                 }
4805
4806                 p[strlen(p) - sizeof(".service") + 1] = 0;
4807                 found_sysv = access(p, F_OK) >= 0;
4808
4809                 if (!found_sysv)
4810                         continue;
4811
4812                 /* Mark this entry, so that we don't try enabling it as native unit */
4813                 args[f] = (char*) "";
4814
4815                 log_info("%s is not a native service, redirecting to /sbin/chkconfig.", name);
4816
4817                 if (!isempty(arg_root))
4818                         argv[c++] = q = strappend("--root=", arg_root);
4819
4820                 argv[c++] = basename(p);
4821                 argv[c++] =
4822                         streq(verb, "enable") ? "on" :
4823                         streq(verb, "disable") ? "off" : "--level=5";
4824                 argv[c] = NULL;
4825
4826                 l = strv_join((char**)argv, " ");
4827                 if (!l) {
4828                         r = log_oom();
4829                         goto finish;
4830                 }
4831
4832                 log_info("Executing %s", l);
4833                 free(l);
4834
4835                 pid = fork();
4836                 if (pid < 0) {
4837                         log_error("Failed to fork: %m");
4838                         r = -errno;
4839                         goto finish;
4840                 } else if (pid == 0) {
4841                         /* Child */
4842
4843                         execv(argv[0], (char**) argv);
4844                         _exit(EXIT_FAILURE);
4845                 }
4846
4847                 j = wait_for_terminate(pid, &status);
4848                 if (j < 0) {
4849                         log_error("Failed to wait for child: %s", strerror(-r));
4850                         r = j;
4851                         goto finish;
4852                 }
4853
4854                 if (status.si_code == CLD_EXITED) {
4855                         if (streq(verb, "is-enabled")) {
4856                                 if (status.si_status == 0) {
4857                                         if (!arg_quiet)
4858                                                 puts("enabled");
4859                                         r = 1;
4860                                 } else {
4861                                         if (!arg_quiet)
4862                                                 puts("disabled");
4863                                 }
4864
4865                         } else if (status.si_status != 0) {
4866                                 r = -EINVAL;
4867                                 goto finish;
4868                         }
4869                 } else {
4870                         r = -EPROTO;
4871                         goto finish;
4872                 }
4873         }
4874
4875 finish:
4876         /* Drop all SysV units */
4877         for (f = 0, t = 0; args[f]; f++) {
4878
4879                 if (isempty(args[f]))
4880                         continue;
4881
4882                 args[t++] = args[f];
4883         }
4884
4885         args[t] = NULL;
4886
4887 #endif
4888         return r;
4889 }
4890
4891 static int mangle_names(char **original_names, char ***mangled_names) {
4892         char **i, **l, **name;
4893
4894         l = new(char*, strv_length(original_names) + 1);
4895         if (!l)
4896                 return log_oom();
4897
4898         i = l;
4899         STRV_FOREACH(name, original_names) {
4900
4901                 /* When enabling units qualified path names are OK,
4902                  * too, hence allow them explicitly. */
4903
4904                 if (is_path(*name))
4905                         *i = strdup(*name);
4906                 else
4907                         *i = unit_name_mangle(*name, MANGLE_NOGLOB);
4908
4909                 if (!*i) {
4910                         strv_free(l);
4911                         return log_oom();
4912                 }
4913
4914                 i++;
4915         }
4916
4917         *i = NULL;
4918         *mangled_names = l;
4919
4920         return 0;
4921 }
4922
4923 static int enable_unit(sd_bus *bus, char **args) {
4924         _cleanup_strv_free_ char **names = NULL;
4925         const char *verb = args[0];
4926         UnitFileChange *changes = NULL;
4927         unsigned n_changes = 0;
4928         int carries_install_info = -1;
4929         int r;
4930
4931         if (!args[1])
4932                 return 0;
4933
4934         r = mangle_names(args+1, &names);
4935         if (r < 0)
4936                 return r;
4937
4938         r = enable_sysv_units(verb, names);
4939         if (r < 0)
4940                 return r;
4941
4942         /* If the operation was fully executed by the SysV compat,
4943          * let's finish early */
4944         if (strv_isempty(names))
4945                 return 0;
4946
4947         if (!bus || avoid_bus()) {
4948                 if (streq(verb, "enable")) {
4949                         r = unit_file_enable(arg_scope, arg_runtime, arg_root, names, arg_force, &changes, &n_changes);
4950                         carries_install_info = r;
4951                 } else if (streq(verb, "disable"))
4952                         r = unit_file_disable(arg_scope, arg_runtime, arg_root, names, &changes, &n_changes);
4953                 else if (streq(verb, "reenable")) {
4954                         r = unit_file_reenable(arg_scope, arg_runtime, arg_root, names, arg_force, &changes, &n_changes);
4955                         carries_install_info = r;
4956                 } else if (streq(verb, "link"))
4957                         r = unit_file_link(arg_scope, arg_runtime, arg_root, names, arg_force, &changes, &n_changes);
4958                 else if (streq(verb, "preset")) {
4959                         r = unit_file_preset(arg_scope, arg_runtime, arg_root, names, arg_force, &changes, &n_changes);
4960                         carries_install_info = r;
4961                 } else if (streq(verb, "mask"))
4962                         r = unit_file_mask(arg_scope, arg_runtime, arg_root, names, arg_force, &changes, &n_changes);
4963                 else if (streq(verb, "unmask"))
4964                         r = unit_file_unmask(arg_scope, arg_runtime, arg_root, names, &changes, &n_changes);
4965                 else
4966                         assert_not_reached("Unknown verb");
4967
4968                 if (r < 0) {
4969                         log_error("Operation failed: %s", strerror(-r));
4970                         goto finish;
4971                 }
4972
4973                 if (!arg_quiet)
4974                         dump_unit_file_changes(changes, n_changes);
4975
4976                 r = 0;
4977         } else {
4978                 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL, *m = NULL;
4979                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
4980                 int expect_carries_install_info = false;
4981                 bool send_force = true;
4982                 const char *method;
4983
4984                 if (streq(verb, "enable")) {
4985                         method = "EnableUnitFiles";
4986                         expect_carries_install_info = true;
4987                 } else if (streq(verb, "disable")) {
4988                         method = "DisableUnitFiles";
4989                         send_force = false;
4990                 } else if (streq(verb, "reenable")) {
4991                         method = "ReenableUnitFiles";
4992                         expect_carries_install_info = true;
4993                 } else if (streq(verb, "link"))
4994                         method = "LinkUnitFiles";
4995                 else if (streq(verb, "preset")) {
4996                         method = "PresetUnitFiles";
4997                         expect_carries_install_info = true;
4998                 } else if (streq(verb, "mask"))
4999                         method = "MaskUnitFiles";
5000                 else if (streq(verb, "unmask")) {
5001                         method = "UnmaskUnitFiles";
5002                         send_force = false;
5003                 } else
5004                         assert_not_reached("Unknown verb");
5005
5006                 r = sd_bus_message_new_method_call(
5007                                 bus,
5008                                 &m,
5009                                 "org.freedesktop.systemd1",
5010                                 "/org/freedesktop/systemd1",
5011                                 "org.freedesktop.systemd1.Manager",
5012                                 method);
5013                 if (r < 0)
5014                         return bus_log_create_error(r);
5015
5016                 r = sd_bus_message_append_strv(m, names);
5017                 if (r < 0)
5018                         return bus_log_create_error(r);
5019
5020                 r = sd_bus_message_append(m, "b", arg_runtime);
5021                 if (r < 0)
5022                         return bus_log_create_error(r);
5023
5024                 if (send_force) {
5025                         r = sd_bus_message_append(m, "b", arg_force);
5026                         if (r < 0)
5027                                 return bus_log_create_error(r);
5028                 }
5029
5030                 r = sd_bus_call(bus, m, 0, &error, &reply);
5031                 if (r < 0) {
5032                         log_error("Failed to execute operation: %s", bus_error_message(&error, r));
5033                         return r;
5034                 }
5035
5036                 if (expect_carries_install_info) {
5037                         r = sd_bus_message_read(reply, "b", &carries_install_info);
5038                         if (r < 0)
5039                                 return bus_log_parse_error(r);
5040                 }
5041
5042                 r = deserialize_and_dump_unit_file_changes(reply);
5043                 if (r < 0)
5044                         return r;
5045
5046                 /* Try to reload if enabeld */
5047                 if (!arg_no_reload)
5048                         r = daemon_reload(bus, args);
5049                 else
5050                         r = 0;
5051         }
5052
5053         if (carries_install_info == 0)
5054                 log_warning("The unit files have no [Install] section. They are not meant to be enabled\n"
5055                             "using systemctl.\n"
5056                             "Possible reasons for having this kind of units are:\n"
5057                             "1) A unit may be statically enabled by being symlinked from another unit's\n"
5058                             "   .wants/ or .requires/ directory.\n"
5059                             "2) A unit's purpose may be to act as a helper for some other unit which has\n"
5060                             "   a requirement dependency on it.\n"
5061                             "3) A unit may be started when needed via activation (socket, path, timer,\n"
5062                             "   D-Bus, udev, scripted systemctl call, ...).\n");
5063
5064 finish:
5065         unit_file_changes_free(changes, n_changes);
5066
5067         return r;
5068 }
5069
5070 static int unit_is_enabled(sd_bus *bus, char **args) {
5071
5072         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
5073         _cleanup_strv_free_ char **names = NULL;
5074         bool enabled;
5075         char **name;
5076         int r;
5077
5078         r = mangle_names(args+1, &names);
5079         if (r < 0)
5080                 return r;
5081
5082         r = enable_sysv_units(args[0], names);
5083         if (r < 0)
5084                 return r;
5085
5086         enabled = r > 0;
5087
5088         if (!bus || avoid_bus()) {
5089
5090                 STRV_FOREACH(name, names) {
5091                         UnitFileState state;
5092
5093                         state = unit_file_get_state(arg_scope, arg_root, *name);
5094                         if (state < 0) {
5095                                 log_error("Failed to get unit file state for %s: %s", *name, strerror(-state));
5096                                 return state;
5097                         }
5098
5099                         if (state == UNIT_FILE_ENABLED ||
5100                             state == UNIT_FILE_ENABLED_RUNTIME ||
5101                             state == UNIT_FILE_STATIC)
5102                                 enabled = true;
5103
5104                         if (!arg_quiet)
5105                                 puts(unit_file_state_to_string(state));
5106                 }
5107
5108         } else {
5109                 STRV_FOREACH(name, names) {
5110                         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
5111                         const char *s;
5112
5113                         r = sd_bus_call_method(
5114                                         bus,
5115                                         "org.freedesktop.systemd1",
5116                                         "/org/freedesktop/systemd1",
5117                                         "org.freedesktop.systemd1.Manager",
5118                                         "GetUnitFileState",
5119                                         &error,
5120                                         &reply,
5121                                         "s", *name);
5122                         if (r < 0) {
5123                                 log_error("Failed to get unit file state for %s: %s", *name, bus_error_message(&error, r));
5124                                 return r;
5125                         }
5126
5127                         r = sd_bus_message_read(reply, "s", &s);
5128                         if (r < 0)
5129                                 return bus_log_parse_error(r);
5130
5131                         if (streq(s, "enabled") ||
5132                             streq(s, "enabled-runtime") ||
5133                             streq(s, "static"))
5134                                 enabled = true;
5135
5136                         if (!arg_quiet)
5137                                 puts(s);
5138                 }
5139         }
5140
5141         return !enabled;
5142 }
5143
5144 static int systemctl_help(void) {
5145
5146         pager_open_if_enabled();
5147
5148         printf("%s [OPTIONS...] {COMMAND} ...\n\n"
5149                "Query or send control commands to the systemd manager.\n\n"
5150                "  -h --help           Show this help\n"
5151                "     --version        Show package version\n"
5152                "     --system         Connect to system manager\n"
5153                "     --user           Connect to user service manager\n"
5154                "  -H --host=[USER@]HOST\n"
5155                "                      Operate on remote host\n"
5156                "  -M --machine=CONTAINER\n"
5157                "                      Operate on local container\n"
5158                "  -t --type=TYPE      List only units of a particular type\n"
5159                "     --state=STATE    List only units with particular LOAD or SUB or ACTIVE state\n"
5160                "  -p --property=NAME  Show only properties by this name\n"
5161                "  -a --all            Show all loaded units/properties, including dead/empty\n"
5162                "                      ones. To list all units installed on the system, use\n"
5163                "                      the 'list-unit-files' command instead.\n"
5164                "  -l --full           Don't ellipsize unit names on output\n"
5165                "     --reverse        Show reverse dependencies with 'list-dependencies'\n"
5166                "     --job-mode=MODE  Specify how to deal with already queued jobs, when\n"
5167                "                      queueing a new job\n"
5168                "     --show-types     When showing sockets, explicitly show their type\n"
5169                "  -i --ignore-inhibitors\n"
5170                "                      When shutting down or sleeping, ignore inhibitors\n"
5171                "     --kill-who=WHO   Who to send signal to\n"
5172                "  -s --signal=SIGNAL  Which signal to send\n"
5173                "  -q --quiet          Suppress output\n"
5174                "     --no-block       Do not wait until operation finished\n"
5175                "     --no-wall        Don't send wall message before halt/power-off/reboot\n"
5176                "     --no-reload      When enabling/disabling unit files, don't reload daemon\n"
5177                "                      configuration\n"
5178                "     --no-legend      Do not print a legend (column headers and hints)\n"
5179                "     --no-pager       Do not pipe output into a pager\n"
5180                "     --no-ask-password\n"
5181                "                      Do not ask for system passwords\n"
5182                "     --global         Enable/disable unit files globally\n"
5183                "     --runtime        Enable unit files only temporarily until next reboot\n"
5184                "  -f --force          When enabling unit files, override existing symlinks\n"
5185                "                      When shutting down, execute action immediately\n"
5186                "     --root=PATH      Enable unit files in the specified root directory\n"
5187                "  -n --lines=INTEGER  Number of journal entries to show\n"
5188                "  -o --output=STRING  Change journal output mode (short, short-monotonic,\n"
5189                "                      verbose, export, json, json-pretty, json-sse, cat)\n"
5190                "     --plain          Print unit dependencies as a list instead of a tree\n\n"
5191                "Unit Commands:\n"
5192                "  list-units [PATTERN...]         List loaded units\n"
5193                "  list-sockets [PATTERN...]       List loaded sockets ordered by address\n"
5194                "  list-timers [PATTERN...]        List loaded timers ordered by next elapse\n"
5195                "  start NAME...                   Start (activate) one or more units\n"
5196                "  stop NAME...                    Stop (deactivate) one or more units\n"
5197                "  reload NAME...                  Reload one or more units\n"
5198                "  restart NAME...                 Start or restart one or more units\n"
5199                "  try-restart NAME...             Restart one or more units if active\n"
5200                "  reload-or-restart NAME...       Reload one or more units if possible,\n"
5201                "                                  otherwise start or restart\n"
5202                "  reload-or-try-restart NAME...   Reload one or more units if possible,\n"
5203                "                                  otherwise restart if active\n"
5204                "  isolate NAME                    Start one unit and stop all others\n"
5205                "  kill NAME...                    Send signal to processes of a unit\n"
5206                "  is-active NAME...               Check whether units are active\n"
5207                "  is-failed NAME...               Check whether units are failed\n"
5208                "  status [NAME...|PID...]         Show runtime status of one or more units\n"
5209                "  show [NAME...|JOB...]           Show properties of one or more\n"
5210                "                                  units/jobs or the manager\n"
5211                "  cat NAME...                     Show files and drop-ins of one or more units\n"
5212                "  set-property NAME ASSIGNMENT... Sets one or more properties of a unit\n"
5213                "  help NAME...|PID...             Show manual for one or more units\n"
5214                "  reset-failed [NAME...]          Reset failed state for all, one, or more\n"
5215                "                                  units\n"
5216                "  list-dependencies [NAME]        Recursively show units which are required\n"
5217                "                                  or wanted by this unit or by which this\n"
5218                "                                  unit is required or wanted\n\n"
5219                "Unit File Commands:\n"
5220                "  list-unit-files [PATTERN...]    List installed unit files\n"
5221                "  enable NAME...                  Enable one or more unit files\n"
5222                "  disable NAME...                 Disable one or more unit files\n"
5223                "  reenable NAME...                Reenable one or more unit files\n"
5224                "  preset NAME...                  Enable/disable one or more unit files\n"
5225                "                                  based on preset configuration\n"
5226                "  is-enabled NAME...              Check whether unit files are enabled\n\n"
5227                "  mask NAME...                    Mask one or more units\n"
5228                "  unmask NAME...                  Unmask one or more units\n"
5229                "  link PATH...                    Link one or more units files into\n"
5230                "                                  the search path\n"
5231                "  get-default                     Get the name of the default target\n"
5232                "  set-default NAME                Set the default target\n\n"
5233                "Machine Commands:\n"
5234                "  list-machines [PATTERN...]      List local containers and host\n\n"
5235                "Job Commands:\n"
5236                "  list-jobs [PATTERN...]          List jobs\n"
5237                "  cancel [JOB...]                 Cancel all, one, or more jobs\n\n"
5238                "Snapshot Commands:\n"
5239                "  snapshot [NAME]                 Create a snapshot\n"
5240                "  delete NAME...                  Remove one or more snapshots\n\n"
5241                "Environment Commands:\n"
5242                "  show-environment                Dump environment\n"
5243                "  set-environment NAME=VALUE...   Set one or more environment variables\n"
5244                "  unset-environment NAME...       Unset one or more environment variables\n"
5245                "  import-environment NAME...      Import all, one or more environment variables\n\n"
5246                "Manager Lifecycle Commands:\n"
5247                "  daemon-reload                   Reload systemd manager configuration\n"
5248                "  daemon-reexec                   Reexecute systemd manager\n\n"
5249                "System Commands:\n"
5250                "  default                         Enter system default mode\n"
5251                "  rescue                          Enter system rescue mode\n"
5252                "  emergency                       Enter system emergency mode\n"
5253                "  halt                            Shut down and halt the system\n"
5254                "  poweroff                        Shut down and power-off the system\n"
5255                "  reboot [ARG]                    Shut down and reboot the system\n"
5256                "  kexec                           Shut down and reboot the system with kexec\n"
5257                "  exit                            Request user instance exit\n"
5258                "  switch-root ROOT [INIT]         Change to a different root file system\n"
5259                "  suspend                         Suspend the system\n"
5260                "  hibernate                       Hibernate the system\n"
5261                "  hybrid-sleep                    Hibernate and suspend the system\n",
5262                program_invocation_short_name);
5263
5264         return 0;
5265 }
5266
5267 static int halt_help(void) {
5268
5269         printf("%s [OPTIONS...]%s\n\n"
5270                "%s the system.\n\n"
5271                "     --help      Show this help\n"
5272                "     --halt      Halt the machine\n"
5273                "  -p --poweroff  Switch off the machine\n"
5274                "     --reboot    Reboot the machine\n"
5275                "  -f --force     Force immediate halt/power-off/reboot\n"
5276                "  -w --wtmp-only Don't halt/power-off/reboot, just write wtmp record\n"
5277                "  -d --no-wtmp   Don't write wtmp record\n"
5278                "     --no-wall   Don't send wall message before halt/power-off/reboot\n",
5279                program_invocation_short_name,
5280                arg_action == ACTION_REBOOT   ? " [ARG]" : "",
5281                arg_action == ACTION_REBOOT   ? "Reboot" :
5282                arg_action == ACTION_POWEROFF ? "Power off" :
5283                                                "Halt");
5284
5285         return 0;
5286 }
5287
5288 static int shutdown_help(void) {
5289
5290         printf("%s [OPTIONS...] [TIME] [WALL...]\n\n"
5291                "Shut down the system.\n\n"
5292                "     --help      Show this help\n"
5293                "  -H --halt      Halt the machine\n"
5294                "  -P --poweroff  Power-off the machine\n"
5295                "  -r --reboot    Reboot the machine\n"
5296                "  -h             Equivalent to --poweroff, overridden by --halt\n"
5297                "  -k             Don't halt/power-off/reboot, just send warnings\n"
5298                "     --no-wall   Don't send wall message before halt/power-off/reboot\n"
5299                "  -c             Cancel a pending shutdown\n",
5300                program_invocation_short_name);
5301
5302         return 0;
5303 }
5304
5305 static int telinit_help(void) {
5306
5307         printf("%s [OPTIONS...] {COMMAND}\n\n"
5308                "Send control commands to the init daemon.\n\n"
5309                "     --help      Show this help\n"
5310                "     --no-wall   Don't send wall message before halt/power-off/reboot\n\n"
5311                "Commands:\n"
5312                "  0              Power-off the machine\n"
5313                "  6              Reboot the machine\n"
5314                "  2, 3, 4, 5     Start runlevelX.target unit\n"
5315                "  1, s, S        Enter rescue mode\n"
5316                "  q, Q           Reload init daemon configuration\n"
5317                "  u, U           Reexecute init daemon\n",
5318                program_invocation_short_name);
5319
5320         return 0;
5321 }
5322
5323 static int runlevel_help(void) {
5324
5325         printf("%s [OPTIONS...]\n\n"
5326                "Prints the previous and current runlevel of the init system.\n\n"
5327                "     --help      Show this help\n",
5328                program_invocation_short_name);
5329
5330         return 0;
5331 }
5332
5333 static int help_types(void) {
5334         int i;
5335         const char *t;
5336
5337         puts("Available unit types:");
5338         for (i = 0; i < _UNIT_TYPE_MAX; i++) {
5339                 t = unit_type_to_string(i);
5340                 if (t)
5341                         puts(t);
5342         }
5343
5344         return 0;
5345 }
5346
5347 static int systemctl_parse_argv(int argc, char *argv[]) {
5348
5349         enum {
5350                 ARG_FAIL = 0x100,
5351                 ARG_REVERSE,
5352                 ARG_AFTER,
5353                 ARG_BEFORE,
5354                 ARG_SHOW_TYPES,
5355                 ARG_IRREVERSIBLE,
5356                 ARG_IGNORE_DEPENDENCIES,
5357                 ARG_VERSION,
5358                 ARG_USER,
5359                 ARG_SYSTEM,
5360                 ARG_GLOBAL,
5361                 ARG_NO_BLOCK,
5362                 ARG_NO_LEGEND,
5363                 ARG_NO_PAGER,
5364                 ARG_NO_WALL,
5365                 ARG_ROOT,
5366                 ARG_NO_RELOAD,
5367                 ARG_KILL_WHO,
5368                 ARG_NO_ASK_PASSWORD,
5369                 ARG_FAILED,
5370                 ARG_RUNTIME,
5371                 ARG_FORCE,
5372                 ARG_PLAIN,
5373                 ARG_STATE,
5374                 ARG_JOB_MODE
5375         };
5376
5377         static const struct option options[] = {
5378                 { "help",                no_argument,       NULL, 'h'                     },
5379                 { "version",             no_argument,       NULL, ARG_VERSION             },
5380                 { "type",                required_argument, NULL, 't'                     },
5381                 { "property",            required_argument, NULL, 'p'                     },
5382                 { "all",                 no_argument,       NULL, 'a'                     },
5383                 { "reverse",             no_argument,       NULL, ARG_REVERSE             },
5384                 { "after",               no_argument,       NULL, ARG_AFTER               },
5385                 { "before",              no_argument,       NULL, ARG_BEFORE              },
5386                 { "show-types",          no_argument,       NULL, ARG_SHOW_TYPES          },
5387                 { "failed",              no_argument,       NULL, ARG_FAILED              }, /* compatibility only */
5388                 { "full",                no_argument,       NULL, 'l'                     },
5389                 { "job-mode",            required_argument, NULL, ARG_JOB_MODE            },
5390                 { "fail",                no_argument,       NULL, ARG_FAIL                }, /* compatibility only */
5391                 { "irreversible",        no_argument,       NULL, ARG_IRREVERSIBLE        }, /* compatibility only */
5392                 { "ignore-dependencies", no_argument,       NULL, ARG_IGNORE_DEPENDENCIES }, /* compatibility only */
5393                 { "ignore-inhibitors",   no_argument,       NULL, 'i'                     },
5394                 { "user",                no_argument,       NULL, ARG_USER                },
5395                 { "system",              no_argument,       NULL, ARG_SYSTEM              },
5396                 { "global",              no_argument,       NULL, ARG_GLOBAL              },
5397                 { "no-block",            no_argument,       NULL, ARG_NO_BLOCK            },
5398                 { "no-legend",           no_argument,       NULL, ARG_NO_LEGEND           },
5399                 { "no-pager",            no_argument,       NULL, ARG_NO_PAGER            },
5400                 { "no-wall",             no_argument,       NULL, ARG_NO_WALL             },
5401                 { "quiet",               no_argument,       NULL, 'q'                     },
5402                 { "root",                required_argument, NULL, ARG_ROOT                },
5403                 { "force",               no_argument,       NULL, ARG_FORCE               },
5404                 { "no-reload",           no_argument,       NULL, ARG_NO_RELOAD           },
5405                 { "kill-who",            required_argument, NULL, ARG_KILL_WHO            },
5406                 { "signal",              required_argument, NULL, 's'                     },
5407                 { "no-ask-password",     no_argument,       NULL, ARG_NO_ASK_PASSWORD     },
5408                 { "host",                required_argument, NULL, 'H'                     },
5409                 { "machine",             required_argument, NULL, 'M'                     },
5410                 { "runtime",             no_argument,       NULL, ARG_RUNTIME             },
5411                 { "lines",               required_argument, NULL, 'n'                     },
5412                 { "output",              required_argument, NULL, 'o'                     },
5413                 { "plain",               no_argument,       NULL, ARG_PLAIN               },
5414                 { "state",               required_argument, NULL, ARG_STATE               },
5415                 {}
5416         };
5417
5418         int c;
5419
5420         assert(argc >= 0);
5421         assert(argv);
5422
5423         while ((c = getopt_long(argc, argv, "ht:p:alqfs:H:M:n:o:i", options, NULL)) >= 0) {
5424
5425                 switch (c) {
5426
5427                 case 'h':
5428                         return systemctl_help();
5429
5430                 case ARG_VERSION:
5431                         puts(PACKAGE_STRING);
5432                         puts(SYSTEMD_FEATURES);
5433                         return 0;
5434
5435                 case 't': {
5436                         char *word, *state;
5437                         size_t size;
5438
5439                         FOREACH_WORD_SEPARATOR(word, size, optarg, ",", state) {
5440                                 _cleanup_free_ char *type;
5441
5442                                 type = strndup(word, size);
5443                                 if (!type)
5444                                         return -ENOMEM;
5445
5446                                 if (streq(type, "help")) {
5447                                         help_types();
5448                                         return 0;
5449                                 }
5450
5451                                 if (unit_type_from_string(type) >= 0) {
5452                                         if (strv_push(&arg_types, type))
5453                                                 return log_oom();
5454                                         type = NULL;
5455                                         continue;
5456                                 }
5457
5458                                 /* It's much nicer to use --state= for
5459                                  * load states, but let's support this
5460                                  * in --types= too for compatibility
5461                                  * with old versions */
5462                                 if (unit_load_state_from_string(optarg) >= 0) {
5463                                         if (strv_push(&arg_states, type) < 0)
5464                                                 return log_oom();
5465                                         type = NULL;
5466                                         continue;
5467                                 }
5468
5469                                 log_error("Unknown unit type or load state '%s'.", type);
5470                                 log_info("Use -t help to see a list of allowed values.");
5471                                 return -EINVAL;
5472                         }
5473
5474                         break;
5475                 }
5476
5477                 case 'p': {
5478                         /* Make sure that if the empty property list
5479                            was specified, we won't show any properties. */
5480                         if (isempty(optarg) && !arg_properties) {
5481                                 arg_properties = new0(char*, 1);
5482                                 if (!arg_properties)
5483                                         return log_oom();
5484                         } else {
5485                                 char *word, *state;
5486                                 size_t size;
5487
5488                                 FOREACH_WORD_SEPARATOR(word, size, optarg, ",", state) {
5489                                         char *prop;
5490
5491                                         prop = strndup(word, size);
5492                                         if (!prop)
5493                                                 return log_oom();
5494
5495                                         if (strv_consume(&arg_properties, prop) < 0)
5496                                                 return log_oom();
5497                                 }
5498                         }
5499
5500                         /* If the user asked for a particular
5501                          * property, show it to him, even if it is
5502                          * empty. */
5503                         arg_all = true;
5504
5505                         break;
5506                 }
5507
5508                 case 'a':
5509                         arg_all = true;
5510                         break;
5511
5512                 case ARG_REVERSE:
5513                         arg_dependency = DEPENDENCY_REVERSE;
5514                         break;
5515
5516                 case ARG_AFTER:
5517                         arg_dependency = DEPENDENCY_AFTER;
5518                         break;
5519
5520                 case ARG_BEFORE:
5521                         arg_dependency = DEPENDENCY_BEFORE;
5522                         break;
5523
5524                 case ARG_SHOW_TYPES:
5525                         arg_show_types = true;
5526                         break;
5527
5528                 case ARG_JOB_MODE:
5529                         arg_job_mode = optarg;
5530                         break;
5531
5532                 case ARG_FAIL:
5533                         arg_job_mode = "fail";
5534                         break;
5535
5536                 case ARG_IRREVERSIBLE:
5537                         arg_job_mode = "replace-irreversibly";
5538                         break;
5539
5540                 case ARG_IGNORE_DEPENDENCIES:
5541                         arg_job_mode = "ignore-dependencies";
5542                         break;
5543
5544                 case ARG_USER:
5545                         arg_scope = UNIT_FILE_USER;
5546                         break;
5547
5548                 case ARG_SYSTEM:
5549                         arg_scope = UNIT_FILE_SYSTEM;
5550                         break;
5551
5552                 case ARG_GLOBAL:
5553                         arg_scope = UNIT_FILE_GLOBAL;
5554                         break;
5555
5556                 case ARG_NO_BLOCK:
5557                         arg_no_block = true;
5558                         break;
5559
5560                 case ARG_NO_LEGEND:
5561                         arg_no_legend = true;
5562                         break;
5563
5564                 case ARG_NO_PAGER:
5565                         arg_no_pager = true;
5566                         break;
5567
5568                 case ARG_NO_WALL:
5569                         arg_no_wall = true;
5570                         break;
5571
5572                 case ARG_ROOT:
5573                         arg_root = optarg;
5574                         break;
5575
5576                 case 'l':
5577                         arg_full = true;
5578                         break;
5579
5580                 case ARG_FAILED:
5581                         if (strv_extend(&arg_states, "failed") < 0)
5582                                 return log_oom();
5583
5584                         break;
5585
5586                 case 'q':
5587                         arg_quiet = true;
5588                         break;
5589
5590                 case ARG_FORCE:
5591                         arg_force ++;
5592                         break;
5593
5594                 case 'f':
5595                         arg_force ++;
5596                         break;
5597
5598                 case ARG_NO_RELOAD:
5599                         arg_no_reload = true;
5600                         break;
5601
5602                 case ARG_KILL_WHO:
5603                         arg_kill_who = optarg;
5604                         break;
5605
5606                 case 's':
5607                         if ((arg_signal = signal_from_string_try_harder(optarg)) < 0) {
5608                                 log_error("Failed to parse signal string %s.", optarg);
5609                                 return -EINVAL;
5610                         }
5611                         break;
5612
5613                 case ARG_NO_ASK_PASSWORD:
5614                         arg_ask_password = false;
5615                         break;
5616
5617                 case 'H':
5618                         arg_transport = BUS_TRANSPORT_REMOTE;
5619                         arg_host = optarg;
5620                         break;
5621
5622                 case 'M':
5623                         arg_transport = BUS_TRANSPORT_CONTAINER;
5624                         arg_host = optarg;
5625                         break;
5626
5627                 case ARG_RUNTIME:
5628                         arg_runtime = true;
5629                         break;
5630
5631                 case 'n':
5632                         if (safe_atou(optarg, &arg_lines) < 0) {
5633                                 log_error("Failed to parse lines '%s'", optarg);
5634                                 return -EINVAL;
5635                         }
5636                         break;
5637
5638                 case 'o':
5639                         arg_output = output_mode_from_string(optarg);
5640                         if (arg_output < 0) {
5641                                 log_error("Unknown output '%s'.", optarg);
5642                                 return -EINVAL;
5643                         }
5644                         break;
5645
5646                 case 'i':
5647                         arg_ignore_inhibitors = true;
5648                         break;
5649
5650                 case ARG_PLAIN:
5651                         arg_plain = true;
5652                         break;
5653
5654                 case ARG_STATE: {
5655                         char *word, *state;
5656                         size_t size;
5657
5658                         FOREACH_WORD_SEPARATOR(word, size, optarg, ",", state) {
5659                                 char *s;
5660
5661                                 s = strndup(word, size);
5662                                 if (!s)
5663                                         return log_oom();
5664
5665                                 if (strv_consume(&arg_states, s) < 0)
5666                                         return log_oom();
5667                         }
5668                         break;
5669                 }
5670
5671                 case '?':
5672                         return -EINVAL;
5673
5674                 default:
5675                         assert_not_reached("Unhandled option");
5676                 }
5677         }
5678
5679         if (arg_transport != BUS_TRANSPORT_LOCAL && arg_scope != UNIT_FILE_SYSTEM) {
5680                 log_error("Cannot access user instance remotely.");
5681                 return -EINVAL;
5682         }
5683
5684         return 1;
5685 }
5686
5687 static int halt_parse_argv(int argc, char *argv[]) {
5688
5689         enum {
5690                 ARG_HELP = 0x100,
5691                 ARG_HALT,
5692                 ARG_REBOOT,
5693                 ARG_NO_WALL
5694         };
5695
5696         static const struct option options[] = {
5697                 { "help",      no_argument,       NULL, ARG_HELP    },
5698                 { "halt",      no_argument,       NULL, ARG_HALT    },
5699                 { "poweroff",  no_argument,       NULL, 'p'         },
5700                 { "reboot",    no_argument,       NULL, ARG_REBOOT  },
5701                 { "force",     no_argument,       NULL, 'f'         },
5702                 { "wtmp-only", no_argument,       NULL, 'w'         },
5703                 { "no-wtmp",   no_argument,       NULL, 'd'         },
5704                 { "no-wall",   no_argument,       NULL, ARG_NO_WALL },
5705                 {}
5706         };
5707
5708         int c, r, runlevel;
5709
5710         assert(argc >= 0);
5711         assert(argv);
5712
5713         if (utmp_get_runlevel(&runlevel, NULL) >= 0)
5714                 if (runlevel == '0' || runlevel == '6')
5715                         arg_force = 2;
5716
5717         while ((c = getopt_long(argc, argv, "pfwdnih", options, NULL)) >= 0) {
5718                 switch (c) {
5719
5720                 case ARG_HELP:
5721                         return halt_help();
5722
5723                 case ARG_HALT:
5724                         arg_action = ACTION_HALT;
5725                         break;
5726
5727                 case 'p':
5728                         if (arg_action != ACTION_REBOOT)
5729                                 arg_action = ACTION_POWEROFF;
5730                         break;
5731
5732                 case ARG_REBOOT:
5733                         arg_action = ACTION_REBOOT;
5734                         break;
5735
5736                 case 'f':
5737                         arg_force = 2;
5738                         break;
5739
5740                 case 'w':
5741                         arg_dry = true;
5742                         break;
5743
5744                 case 'd':
5745                         arg_no_wtmp = true;
5746                         break;
5747
5748                 case ARG_NO_WALL:
5749                         arg_no_wall = true;
5750                         break;
5751
5752                 case 'i':
5753                 case 'h':
5754                 case 'n':
5755                         /* Compatibility nops */
5756                         break;
5757
5758                 case '?':
5759                         return -EINVAL;
5760
5761                 default:
5762                         assert_not_reached("Unhandled option");
5763                 }
5764         }
5765
5766         if (arg_action == ACTION_REBOOT && argc == optind + 1) {
5767                 r = write_string_file(REBOOT_PARAM_FILE, argv[optind]);
5768                 if (r < 0) {
5769                         log_error("Failed to write reboot param to "
5770                                   REBOOT_PARAM_FILE": %s", strerror(-r));
5771                         return r;
5772                 }
5773         } else if (optind < argc) {
5774                 log_error("Too many arguments.");
5775                 return -EINVAL;
5776         }
5777
5778         return 1;
5779 }
5780
5781 static int parse_time_spec(const char *t, usec_t *_u) {
5782         assert(t);
5783         assert(_u);
5784
5785         if (streq(t, "now"))
5786                 *_u = 0;
5787         else if (!strchr(t, ':')) {
5788                 uint64_t u;
5789
5790                 if (safe_atou64(t, &u) < 0)
5791                         return -EINVAL;
5792
5793                 *_u = now(CLOCK_REALTIME) + USEC_PER_MINUTE * u;
5794         } else {
5795                 char *e = NULL;
5796                 long hour, minute;
5797                 struct tm tm = {};
5798                 time_t s;
5799                 usec_t n;
5800
5801                 errno = 0;
5802                 hour = strtol(t, &e, 10);
5803                 if (errno > 0 || *e != ':' || hour < 0 || hour > 23)
5804                         return -EINVAL;
5805
5806                 minute = strtol(e+1, &e, 10);
5807                 if (errno > 0 || *e != 0 || minute < 0 || minute > 59)
5808                         return -EINVAL;
5809
5810                 n = now(CLOCK_REALTIME);
5811                 s = (time_t) (n / USEC_PER_SEC);
5812
5813                 assert_se(localtime_r(&s, &tm));
5814
5815                 tm.tm_hour = (int) hour;
5816                 tm.tm_min = (int) minute;
5817                 tm.tm_sec = 0;
5818
5819                 assert_se(s = mktime(&tm));
5820
5821                 *_u = (usec_t) s * USEC_PER_SEC;
5822
5823                 while (*_u <= n)
5824                         *_u += USEC_PER_DAY;
5825         }
5826
5827         return 0;
5828 }
5829
5830 static int shutdown_parse_argv(int argc, char *argv[]) {
5831
5832         enum {
5833                 ARG_HELP = 0x100,
5834                 ARG_NO_WALL
5835         };
5836
5837         static const struct option options[] = {
5838                 { "help",      no_argument,       NULL, ARG_HELP    },
5839                 { "halt",      no_argument,       NULL, 'H'         },
5840                 { "poweroff",  no_argument,       NULL, 'P'         },
5841                 { "reboot",    no_argument,       NULL, 'r'         },
5842                 { "kexec",     no_argument,       NULL, 'K'         }, /* not documented extension */
5843                 { "no-wall",   no_argument,       NULL, ARG_NO_WALL },
5844                 {}
5845         };
5846
5847         int c, r;
5848
5849         assert(argc >= 0);
5850         assert(argv);
5851
5852         while ((c = getopt_long(argc, argv, "HPrhkt:afFc", options, NULL)) >= 0) {
5853                 switch (c) {
5854
5855                 case ARG_HELP:
5856                         return shutdown_help();
5857
5858                 case 'H':
5859                         arg_action = ACTION_HALT;
5860                         break;
5861
5862                 case 'P':
5863                         arg_action = ACTION_POWEROFF;
5864                         break;
5865
5866                 case 'r':
5867                         if (kexec_loaded())
5868                                 arg_action = ACTION_KEXEC;
5869                         else
5870                                 arg_action = ACTION_REBOOT;
5871                         break;
5872
5873                 case 'K':
5874                         arg_action = ACTION_KEXEC;
5875                         break;
5876
5877                 case 'h':
5878                         if (arg_action != ACTION_HALT)
5879                                 arg_action = ACTION_POWEROFF;
5880                         break;
5881
5882                 case 'k':
5883                         arg_dry = true;
5884                         break;
5885
5886                 case ARG_NO_WALL:
5887                         arg_no_wall = true;
5888                         break;
5889
5890                 case 't':
5891                 case 'a':
5892                         /* Compatibility nops */
5893                         break;
5894
5895                 case 'c':
5896                         arg_action = ACTION_CANCEL_SHUTDOWN;
5897                         break;
5898
5899                 case '?':
5900                         return -EINVAL;
5901
5902                 default:
5903                         assert_not_reached("Unhandled option");
5904                 }
5905         }
5906
5907         if (argc > optind && arg_action != ACTION_CANCEL_SHUTDOWN) {
5908                 r = parse_time_spec(argv[optind], &arg_when);
5909                 if (r < 0) {
5910                         log_error("Failed to parse time specification: %s", argv[optind]);
5911                         return r;
5912                 }
5913         } else
5914                 arg_when = now(CLOCK_REALTIME) + USEC_PER_MINUTE;
5915
5916         if (argc > optind && arg_action == ACTION_CANCEL_SHUTDOWN)
5917                 /* No time argument for shutdown cancel */
5918                 arg_wall = argv + optind;
5919         else if (argc > optind + 1)
5920                 /* We skip the time argument */
5921                 arg_wall = argv + optind + 1;
5922
5923         optind = argc;
5924
5925         return 1;
5926 }
5927
5928 static int telinit_parse_argv(int argc, char *argv[]) {
5929
5930         enum {
5931                 ARG_HELP = 0x100,
5932                 ARG_NO_WALL
5933         };
5934
5935         static const struct option options[] = {
5936                 { "help",      no_argument,       NULL, ARG_HELP    },
5937                 { "no-wall",   no_argument,       NULL, ARG_NO_WALL },
5938                 {}
5939         };
5940
5941         static const struct {
5942                 char from;
5943                 enum action to;
5944         } table[] = {
5945                 { '0', ACTION_POWEROFF },
5946                 { '6', ACTION_REBOOT },
5947                 { '1', ACTION_RESCUE },
5948                 { '2', ACTION_RUNLEVEL2 },
5949                 { '3', ACTION_RUNLEVEL3 },
5950                 { '4', ACTION_RUNLEVEL4 },
5951                 { '5', ACTION_RUNLEVEL5 },
5952                 { 's', ACTION_RESCUE },
5953                 { 'S', ACTION_RESCUE },
5954                 { 'q', ACTION_RELOAD },
5955                 { 'Q', ACTION_RELOAD },
5956                 { 'u', ACTION_REEXEC },
5957                 { 'U', ACTION_REEXEC }
5958         };
5959
5960         unsigned i;
5961         int c;
5962
5963         assert(argc >= 0);
5964         assert(argv);
5965
5966         while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) {
5967                 switch (c) {
5968
5969                 case ARG_HELP:
5970                         return telinit_help();
5971
5972                 case ARG_NO_WALL:
5973                         arg_no_wall = true;
5974                         break;
5975
5976                 case '?':
5977                         return -EINVAL;
5978
5979                 default:
5980                         assert_not_reached("Unhandled option");
5981                 }
5982         }
5983
5984         if (optind >= argc) {
5985                 telinit_help();
5986                 return -EINVAL;
5987         }
5988
5989         if (optind + 1 < argc) {
5990                 log_error("Too many arguments.");
5991                 return -EINVAL;
5992         }
5993
5994         if (strlen(argv[optind]) != 1) {
5995                 log_error("Expected single character argument.");
5996                 return -EINVAL;
5997         }
5998
5999         for (i = 0; i < ELEMENTSOF(table); i++)
6000                 if (table[i].from == argv[optind][0])
6001                         break;
6002
6003         if (i >= ELEMENTSOF(table)) {
6004                 log_error("Unknown command '%s'.", argv[optind]);
6005                 return -EINVAL;
6006         }
6007
6008         arg_action = table[i].to;
6009
6010         optind ++;
6011
6012         return 1;
6013 }
6014
6015 static int runlevel_parse_argv(int argc, char *argv[]) {
6016
6017         enum {
6018                 ARG_HELP = 0x100,
6019         };
6020
6021         static const struct option options[] = {
6022                 { "help",      no_argument,       NULL, ARG_HELP    },
6023                 {}
6024         };
6025
6026         int c;
6027
6028         assert(argc >= 0);
6029         assert(argv);
6030
6031         while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) {
6032                 switch (c) {
6033
6034                 case ARG_HELP:
6035                         return runlevel_help();
6036
6037                 case '?':
6038                         return -EINVAL;
6039
6040                 default:
6041                         assert_not_reached("Unhandled option");
6042                 }
6043         }
6044
6045         if (optind < argc) {
6046                 log_error("Too many arguments.");
6047                 return -EINVAL;
6048         }
6049
6050         return 1;
6051 }
6052
6053 static int parse_argv(int argc, char *argv[]) {
6054         assert(argc >= 0);
6055         assert(argv);
6056
6057         if (program_invocation_short_name) {
6058
6059                 if (strstr(program_invocation_short_name, "halt")) {
6060                         arg_action = ACTION_HALT;
6061                         return halt_parse_argv(argc, argv);
6062                 } else if (strstr(program_invocation_short_name, "poweroff")) {
6063                         arg_action = ACTION_POWEROFF;
6064                         return halt_parse_argv(argc, argv);
6065                 } else if (strstr(program_invocation_short_name, "reboot")) {
6066                         if (kexec_loaded())
6067                                 arg_action = ACTION_KEXEC;
6068                         else
6069                                 arg_action = ACTION_REBOOT;
6070                         return halt_parse_argv(argc, argv);
6071                 } else if (strstr(program_invocation_short_name, "shutdown")) {
6072                         arg_action = ACTION_POWEROFF;
6073                         return shutdown_parse_argv(argc, argv);
6074                 } else if (strstr(program_invocation_short_name, "init")) {
6075
6076                         if (sd_booted() > 0) {
6077                                 arg_action = _ACTION_INVALID;
6078                                 return telinit_parse_argv(argc, argv);
6079                         } else {
6080                                 /* Hmm, so some other init system is
6081                                  * running, we need to forward this
6082                                  * request to it. For now we simply
6083                                  * guess that it is Upstart. */
6084
6085                                 execv(TELINIT, argv);
6086
6087                                 log_error("Couldn't find an alternative telinit implementation to spawn.");
6088                                 return -EIO;
6089                         }
6090
6091                 } else if (strstr(program_invocation_short_name, "runlevel")) {
6092                         arg_action = ACTION_RUNLEVEL;
6093                         return runlevel_parse_argv(argc, argv);
6094                 }
6095         }
6096
6097         arg_action = ACTION_SYSTEMCTL;
6098         return systemctl_parse_argv(argc, argv);
6099 }
6100
6101 _pure_ static int action_to_runlevel(void) {
6102
6103         static const char table[_ACTION_MAX] = {
6104                 [ACTION_HALT] =      '0',
6105                 [ACTION_POWEROFF] =  '0',
6106                 [ACTION_REBOOT] =    '6',
6107                 [ACTION_RUNLEVEL2] = '2',
6108                 [ACTION_RUNLEVEL3] = '3',
6109                 [ACTION_RUNLEVEL4] = '4',
6110                 [ACTION_RUNLEVEL5] = '5',
6111                 [ACTION_RESCUE] =    '1'
6112         };
6113
6114         assert(arg_action < _ACTION_MAX);
6115
6116         return table[arg_action];
6117 }
6118
6119 static int talk_initctl(void) {
6120
6121         struct init_request request = {
6122                 .magic = INIT_MAGIC,
6123                 .sleeptime  = 0,
6124                 .cmd = INIT_CMD_RUNLVL
6125         };
6126
6127         _cleanup_close_ int fd = -1;
6128         char rl;
6129         int r;
6130
6131         rl = action_to_runlevel();
6132         if (!rl)
6133                 return 0;
6134
6135         request.runlevel = rl;
6136
6137         fd = open(INIT_FIFO, O_WRONLY|O_NDELAY|O_CLOEXEC|O_NOCTTY);
6138         if (fd < 0) {
6139                 if (errno == ENOENT)
6140                         return 0;
6141
6142                 log_error("Failed to open "INIT_FIFO": %m");
6143                 return -errno;
6144         }
6145
6146         errno = 0;
6147         r = loop_write(fd, &request, sizeof(request), false) != sizeof(request);
6148         if (r) {
6149                 log_error("Failed to write to "INIT_FIFO": %m");
6150                 return errno > 0 ? -errno : -EIO;
6151         }
6152
6153         return 1;
6154 }
6155
6156 static int systemctl_main(sd_bus *bus, int argc, char *argv[], int bus_error) {
6157
6158         static const struct {
6159                 const char* verb;
6160                 const enum {
6161                         MORE,
6162                         LESS,
6163                         EQUAL
6164                 } argc_cmp;
6165                 const int argc;
6166                 int (* const dispatch)(sd_bus *bus, char **args);
6167                 const enum {
6168                         NOBUS = 1,
6169                         FORCE,
6170                 } bus;
6171         } verbs[] = {
6172                 { "list-units",            MORE,  0, list_units        },
6173                 { "list-unit-files",       MORE,  1, list_unit_files,  NOBUS },
6174                 { "list-sockets",          MORE,  1, list_sockets      },
6175                 { "list-timers",           MORE,  1, list_timers       },
6176                 { "list-jobs",             MORE,  1, list_jobs         },
6177                 { "list-machines",         MORE,  1, list_machines     },
6178                 { "clear-jobs",            EQUAL, 1, daemon_reload     },
6179                 { "cancel",                MORE,  2, cancel_job        },
6180                 { "start",                 MORE,  2, start_unit        },
6181                 { "stop",                  MORE,  2, start_unit        },
6182                 { "condstop",              MORE,  2, start_unit        }, /* For compatibility with ALTLinux */
6183                 { "reload",                MORE,  2, start_unit        },
6184                 { "restart",               MORE,  2, start_unit        },
6185                 { "try-restart",           MORE,  2, start_unit        },
6186                 { "reload-or-restart",     MORE,  2, start_unit        },
6187                 { "reload-or-try-restart", MORE,  2, start_unit        },
6188                 { "force-reload",          MORE,  2, start_unit        }, /* For compatibility with SysV */
6189                 { "condreload",            MORE,  2, start_unit        }, /* For compatibility with ALTLinux */
6190                 { "condrestart",           MORE,  2, start_unit        }, /* For compatibility with RH */
6191                 { "isolate",               EQUAL, 2, start_unit        },
6192                 { "kill",                  MORE,  2, kill_unit         },
6193                 { "is-active",             MORE,  2, check_unit_active },
6194                 { "check",                 MORE,  2, check_unit_active },
6195                 { "is-failed",             MORE,  2, check_unit_failed },
6196                 { "show",                  MORE,  1, show              },
6197                 { "cat",                   MORE,  2, cat               },
6198                 { "status",                MORE,  1, show              },
6199                 { "help",                  MORE,  2, show              },
6200                 { "snapshot",              LESS,  2, snapshot          },
6201                 { "delete",                MORE,  2, delete_snapshot   },
6202                 { "daemon-reload",         EQUAL, 1, daemon_reload     },
6203                 { "daemon-reexec",         EQUAL, 1, daemon_reload     },
6204                 { "show-environment",      EQUAL, 1, show_environment  },
6205                 { "set-environment",       MORE,  2, set_environment   },
6206                 { "unset-environment",     MORE,  2, set_environment   },
6207                 { "import-environment",    MORE,  1, import_environment},
6208                 { "halt",                  EQUAL, 1, start_special,    FORCE },
6209                 { "poweroff",              EQUAL, 1, start_special,    FORCE },
6210                 { "reboot",                EQUAL, 1, start_special,    FORCE },
6211                 { "kexec",                 EQUAL, 1, start_special     },
6212                 { "suspend",               EQUAL, 1, start_special     },
6213                 { "hibernate",             EQUAL, 1, start_special     },
6214                 { "hybrid-sleep",          EQUAL, 1, start_special     },
6215                 { "default",               EQUAL, 1, start_special     },
6216                 { "rescue",                EQUAL, 1, start_special     },
6217                 { "emergency",             EQUAL, 1, start_special     },
6218                 { "exit",                  EQUAL, 1, start_special     },
6219                 { "reset-failed",          MORE,  1, reset_failed      },
6220                 { "enable",                MORE,  2, enable_unit,      NOBUS },
6221                 { "disable",               MORE,  2, enable_unit,      NOBUS },
6222                 { "is-enabled",            MORE,  2, unit_is_enabled,  NOBUS },
6223                 { "reenable",              MORE,  2, enable_unit,      NOBUS },
6224                 { "preset",                MORE,  2, enable_unit,      NOBUS },
6225                 { "mask",                  MORE,  2, enable_unit,      NOBUS },
6226                 { "unmask",                MORE,  2, enable_unit,      NOBUS },
6227                 { "link",                  MORE,  2, enable_unit,      NOBUS },
6228                 { "switch-root",           MORE,  2, switch_root       },
6229                 { "list-dependencies",     LESS,  2, list_dependencies },
6230                 { "set-default",           EQUAL, 2, set_default,      NOBUS },
6231                 { "get-default",           EQUAL, 1, get_default,      NOBUS },
6232                 { "set-property",          MORE,  3, set_property      },
6233                 {}
6234         }, *verb = verbs;
6235
6236         int left;
6237
6238         assert(argc >= 0);
6239         assert(argv);
6240
6241         left = argc - optind;
6242
6243         /* Special rule: no arguments (left == 0) means "list-units" */
6244         if (left > 0) {
6245                 if (streq(argv[optind], "help") && !argv[optind+1]) {
6246                         log_error("This command expects one or more "
6247                                   "unit names. Did you mean --help?");
6248                         return -EINVAL;
6249                 }
6250
6251                 for (; verb->verb; verb++)
6252                         if (streq(argv[optind], verb->verb))
6253                                 goto found;
6254
6255                 log_error("Unknown operation '%s'.", argv[optind]);
6256                 return -EINVAL;
6257         }
6258 found:
6259
6260         switch (verb->argc_cmp) {
6261
6262         case EQUAL:
6263                 if (left != verb->argc) {
6264                         log_error("Invalid number of arguments.");
6265                         return -EINVAL;
6266                 }
6267
6268                 break;
6269
6270         case MORE:
6271                 if (left < verb->argc) {
6272                         log_error("Too few arguments.");
6273                         return -EINVAL;
6274                 }
6275
6276                 break;
6277
6278         case LESS:
6279                 if (left > verb->argc) {
6280                         log_error("Too many arguments.");
6281                         return -EINVAL;
6282                 }
6283
6284                 break;
6285
6286         default:
6287                 assert_not_reached("Unknown comparison operator.");
6288         }
6289
6290         /* Require a bus connection for all operations but
6291          * enable/disable */
6292         if (verb->bus == NOBUS) {
6293                 if (!bus && !avoid_bus()) {
6294                         log_error("Failed to get D-Bus connection: %s", strerror(-bus_error));
6295                         return -EIO;
6296                 }
6297
6298         } else {
6299                 if (running_in_chroot() > 0) {
6300                         log_info("Running in chroot, ignoring request.");
6301                         return 0;
6302                 }
6303
6304                 if ((verb->bus != FORCE || arg_force <= 0) && !bus) {
6305                         log_error("Failed to get D-Bus connection: %s", strerror(-bus_error));
6306                         return -EIO;
6307                 }
6308         }
6309
6310         return verb->dispatch(bus, argv + optind);
6311 }
6312
6313 static int send_shutdownd(usec_t t, char mode, bool dry_run, bool warn, const char *message) {
6314
6315         struct sd_shutdown_command c = {
6316                 .usec = t,
6317                 .mode = mode,
6318                 .dry_run = dry_run,
6319                 .warn_wall = warn,
6320         };
6321
6322         union sockaddr_union sockaddr = {
6323                 .un.sun_family = AF_UNIX,
6324                 .un.sun_path = "/run/systemd/shutdownd",
6325         };
6326
6327         struct iovec iovec[2] = {{
6328                  .iov_base = (char*) &c,
6329                  .iov_len = offsetof(struct sd_shutdown_command, wall_message),
6330         }};
6331
6332         struct msghdr msghdr = {
6333                 .msg_name = &sockaddr,
6334                 .msg_namelen = offsetof(struct sockaddr_un, sun_path)
6335                                + sizeof("/run/systemd/shutdownd") - 1,
6336                 .msg_iov = iovec,
6337                 .msg_iovlen = 1,
6338         };
6339
6340         _cleanup_close_ int fd;
6341
6342         fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0);
6343         if (fd < 0)
6344                 return -errno;
6345
6346         if (!isempty(message)) {
6347                 iovec[1].iov_base = (char*) message;
6348                 iovec[1].iov_len = strlen(message);
6349                 msghdr.msg_iovlen++;
6350         }
6351
6352         if (sendmsg(fd, &msghdr, MSG_NOSIGNAL) < 0)
6353                 return -errno;
6354
6355         return 0;
6356 }
6357
6358 static int reload_with_fallback(sd_bus *bus) {
6359
6360         if (bus) {
6361                 /* First, try systemd via D-Bus. */
6362                 if (daemon_reload(bus, NULL) >= 0)
6363                         return 0;
6364         }
6365
6366         /* Nothing else worked, so let's try signals */
6367         assert(arg_action == ACTION_RELOAD || arg_action == ACTION_REEXEC);
6368
6369         if (kill(1, arg_action == ACTION_RELOAD ? SIGHUP : SIGTERM) < 0) {
6370                 log_error("kill() failed: %m");
6371                 return -errno;
6372         }
6373
6374         return 0;
6375 }
6376
6377 static int start_with_fallback(sd_bus *bus) {
6378
6379         if (bus) {
6380                 /* First, try systemd via D-Bus. */
6381                 if (start_unit(bus, NULL) >= 0)
6382                         goto done;
6383         }
6384
6385         /* Nothing else worked, so let's try
6386          * /dev/initctl */
6387         if (talk_initctl() > 0)
6388                 goto done;
6389
6390         log_error("Failed to talk to init daemon.");
6391         return -EIO;
6392
6393 done:
6394         warn_wall(arg_action);
6395         return 0;
6396 }
6397
6398 static int halt_now(enum action a) {
6399
6400 /* Make sure C-A-D is handled by the kernel from this
6401          * point on... */
6402         reboot(RB_ENABLE_CAD);
6403
6404         switch (a) {
6405
6406         case ACTION_HALT:
6407                 log_info("Halting.");
6408                 reboot(RB_HALT_SYSTEM);
6409                 return -errno;
6410
6411         case ACTION_POWEROFF:
6412                 log_info("Powering off.");
6413                 reboot(RB_POWER_OFF);
6414                 return -errno;
6415
6416         case ACTION_REBOOT: {
6417                 _cleanup_free_ char *param = NULL;
6418
6419                 if (read_one_line_file(REBOOT_PARAM_FILE, &param) >= 0) {
6420                         log_info("Rebooting with argument '%s'.", param);
6421                         syscall(SYS_reboot, LINUX_REBOOT_MAGIC1, LINUX_REBOOT_MAGIC2,
6422                                 LINUX_REBOOT_CMD_RESTART2, param);
6423                 }
6424
6425                 log_info("Rebooting.");
6426                 reboot(RB_AUTOBOOT);
6427                 return -errno;
6428         }
6429
6430         default:
6431                 assert_not_reached("Unknown action.");
6432         }
6433 }
6434
6435 static int halt_main(sd_bus *bus) {
6436         int r;
6437
6438         r = check_inhibitors(bus, arg_action);
6439         if (r < 0)
6440                 return r;
6441
6442         if (geteuid() != 0) {
6443                 /* Try logind if we are a normal user and no special
6444                  * mode applies. Maybe PolicyKit allows us to shutdown
6445                  * the machine. */
6446
6447                 if (arg_when <= 0 &&
6448                     !arg_dry &&
6449                     arg_force <= 0 &&
6450                     (arg_action == ACTION_POWEROFF ||
6451                      arg_action == ACTION_REBOOT)) {
6452                         r = reboot_with_logind(bus, arg_action);
6453                         if (r >= 0)
6454                                 return r;
6455                 }
6456
6457                 log_error("Must be root.");
6458                 return -EPERM;
6459         }
6460
6461         if (arg_when > 0) {
6462                 _cleanup_free_ char *m;
6463
6464                 m = strv_join(arg_wall, " ");
6465                 if (!m)
6466                         return log_oom();
6467
6468                 r = send_shutdownd(arg_when,
6469                                    arg_action == ACTION_HALT     ? 'H' :
6470                                    arg_action == ACTION_POWEROFF ? 'P' :
6471                                    arg_action == ACTION_KEXEC    ? 'K' :
6472                                                                    'r',
6473                                    arg_dry,
6474                                    !arg_no_wall,
6475                                    m);
6476
6477                 if (r < 0)
6478                         log_warning("Failed to talk to shutdownd, proceeding with immediate shutdown: %s", strerror(-r));
6479                 else {
6480                         char date[FORMAT_TIMESTAMP_MAX];
6481
6482                         log_info("Shutdown scheduled for %s, use 'shutdown -c' to cancel.",
6483                                  format_timestamp(date, sizeof(date), arg_when));
6484                         return 0;
6485                 }
6486         }
6487
6488         if (!arg_dry && !arg_force)
6489                 return start_with_fallback(bus);
6490
6491         if (!arg_no_wtmp) {
6492                 if (sd_booted() > 0)
6493                         log_debug("Not writing utmp record, assuming that systemd-update-utmp is used.");
6494                 else {
6495                         r = utmp_put_shutdown();
6496                         if (r < 0)
6497                                 log_warning("Failed to write utmp record: %s", strerror(-r));
6498                 }
6499         }
6500
6501         if (arg_dry)
6502                 return 0;
6503
6504         r = halt_now(arg_action);
6505         log_error("Failed to reboot: %s", strerror(-r));
6506
6507         return r;
6508 }
6509
6510 static int runlevel_main(void) {
6511         int r, runlevel, previous;
6512
6513         r = utmp_get_runlevel(&runlevel, &previous);
6514         if (r < 0) {
6515                 puts("unknown");
6516                 return r;
6517         }
6518
6519         printf("%c %c\n",
6520                previous <= 0 ? 'N' : previous,
6521                runlevel <= 0 ? 'N' : runlevel);
6522
6523         return 0;
6524 }
6525
6526 int main(int argc, char*argv[]) {
6527         _cleanup_bus_unref_ sd_bus *bus = NULL;
6528         int r;
6529
6530         setlocale(LC_ALL, "");
6531         log_parse_environment();
6532         log_open();
6533
6534         /* Explicitly not on_tty() to avoid setting cached value.
6535          * This becomes relevant for piping output which might be
6536          * ellipsized. */
6537         original_stdout_is_tty = isatty(STDOUT_FILENO);
6538
6539         r = parse_argv(argc, argv);
6540         if (r <= 0)
6541                 goto finish;
6542
6543         /* /sbin/runlevel doesn't need to communicate via D-Bus, so
6544          * let's shortcut this */
6545         if (arg_action == ACTION_RUNLEVEL) {
6546                 r = runlevel_main();
6547                 goto finish;
6548         }
6549
6550         if (running_in_chroot() > 0 && arg_action != ACTION_SYSTEMCTL) {
6551                 log_info("Running in chroot, ignoring request.");
6552                 r = 0;
6553                 goto finish;
6554         }
6555
6556         if (!avoid_bus())
6557                 r = bus_open_transport_systemd(arg_transport, arg_host, arg_scope != UNIT_FILE_SYSTEM, &bus);
6558
6559         /* systemctl_main() will print an error message for the bus
6560          * connection, but only if it needs to */
6561
6562         switch (arg_action) {
6563
6564         case ACTION_SYSTEMCTL:
6565                 r = systemctl_main(bus, argc, argv, r);
6566                 break;
6567
6568         case ACTION_HALT:
6569         case ACTION_POWEROFF:
6570         case ACTION_REBOOT:
6571         case ACTION_KEXEC:
6572                 r = halt_main(bus);
6573                 break;
6574
6575         case ACTION_RUNLEVEL2:
6576         case ACTION_RUNLEVEL3:
6577         case ACTION_RUNLEVEL4:
6578         case ACTION_RUNLEVEL5:
6579         case ACTION_RESCUE:
6580         case ACTION_EMERGENCY:
6581         case ACTION_DEFAULT:
6582                 r = start_with_fallback(bus);
6583                 break;
6584
6585         case ACTION_RELOAD:
6586         case ACTION_REEXEC:
6587                 r = reload_with_fallback(bus);
6588                 break;
6589
6590         case ACTION_CANCEL_SHUTDOWN: {
6591                 _cleanup_free_ char *m = NULL;
6592
6593                 if (arg_wall) {
6594                         m = strv_join(arg_wall, " ");
6595                         if (!m) {
6596                                 r = log_oom();
6597                                 goto finish;
6598                         }
6599                 }
6600
6601                 r = send_shutdownd(arg_when, SD_SHUTDOWN_NONE, false, !arg_no_wall, m);
6602                 if (r < 0)
6603                         log_warning("Failed to talk to shutdownd, shutdown hasn't been cancelled: %s", strerror(-r));
6604                 break;
6605         }
6606
6607         case ACTION_RUNLEVEL:
6608         case _ACTION_INVALID:
6609         default:
6610                 assert_not_reached("Unknown action");
6611         }
6612
6613 finish:
6614         pager_close();
6615         ask_password_agent_close();
6616         polkit_agent_close();
6617
6618         strv_free(arg_types);
6619         strv_free(arg_states);
6620         strv_free(arg_properties);
6621
6622         return r < 0 ? EXIT_FAILURE : r;
6623 }