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