src/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
   8   systemd is free software; you can redistribute it and/or modify it
   9   under the terms of the GNU General Public License as published by
  10   the Free Software Foundation; either version 2 of the License, or
  11   (at your option) any later version.
  12
  13   systemd is distributed in the hope that it will be useful, but
  14   WITHOUT ANY WARRANTY; without even the implied warranty of
  15   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  16   General Public License for more details.
  17
  18   You should have received a copy of the GNU General Public License
  19   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  20 ***/
  21
  22 #include <sys/reboot.h>
  23 #include <stdio.h>
  24 #include <getopt.h>
  25 #include <stdbool.h>
  26 #include <string.h>
  27 #include <errno.h>
  28 #include <sys/ioctl.h>
  29 #include <termios.h>
  30 #include <unistd.h>
  31 #include <fcntl.h>
  32 #include <sys/socket.h>
  33 #include <sys/stat.h>
  34 #include <stddef.h>
  35 #include <sys/prctl.h>
  36 #include <dbus/dbus.h>
  37
  38 #include "log.h"
  39 #include "util.h"
  40 #include "macro.h"
  41 #include "set.h"
  42 #include "utmp-wtmp.h"
  43 #include "special.h"
  44 #include "initreq.h"
  45 #include "strv.h"
  46 #include "dbus-common.h"
  47 #include "cgroup-show.h"
  48 #include "cgroup-util.h"
  49 #include "list.h"
  50 #include "path-lookup.h"
  51 #include "conf-parser.h"
  52 #include "sd-daemon.h"
  53 #include "shutdownd.h"
  54 #include "exit-status.h"
  55 #include "bus-errors.h"
  56 #include "build.h"
  57 #include "unit-name.h"
  58 #include "pager.h"
  59 #include "spawn-agent.h"
  60 #include "install.h"
  61 #include "logs-show.h"
  62
  63 static const char *arg_type = NULL;
  64 static char **arg_property = NULL;
  65 static bool arg_all = false;
  66 static const char *arg_job_mode = "replace";
  67 static UnitFileScope arg_scope = UNIT_FILE_SYSTEM;
  68 static bool arg_immediate = false;
  69 static bool arg_no_block = false;
  70 static bool arg_no_legend = false;
  71 static bool arg_no_pager = false;
  72 static bool arg_no_wtmp = false;
  73 static bool arg_no_sync = false;
  74 static bool arg_no_wall = false;
  75 static bool arg_no_reload = false;
  76 static bool arg_dry = false;
  77 static bool arg_quiet = false;
  78 static bool arg_full = false;
  79 static bool arg_force = false;
  80 static bool arg_ask_password = false;
  81 static bool arg_failed = false;
  82 static bool arg_runtime = false;
  83 static char **arg_wall = NULL;
  84 static const char *arg_kill_who = NULL;
  85 static const char *arg_kill_mode = NULL;
  86 static int arg_signal = SIGTERM;
  87 static const char *arg_root = NULL;
  88 static usec_t arg_when = 0;
  89 static enum action {
  90         ACTION_INVALID,
  91         ACTION_SYSTEMCTL,
  92         ACTION_HALT,
  93         ACTION_POWEROFF,
  94         ACTION_REBOOT,
  95         ACTION_KEXEC,
  96         ACTION_EXIT,
  97         ACTION_RUNLEVEL2,
  98         ACTION_RUNLEVEL3,
  99         ACTION_RUNLEVEL4,
 100         ACTION_RUNLEVEL5,
 101         ACTION_RESCUE,
 102         ACTION_EMERGENCY,
 103         ACTION_DEFAULT,
 104         ACTION_RELOAD,
 105         ACTION_REEXEC,
 106         ACTION_RUNLEVEL,
 107         ACTION_CANCEL_SHUTDOWN,
 108         _ACTION_MAX
 109 } arg_action = ACTION_SYSTEMCTL;
 110 static enum dot {
 111         DOT_ALL,
 112         DOT_ORDER,
 113         DOT_REQUIRE
 114 } arg_dot = DOT_ALL;
 115 static enum transport {
 116         TRANSPORT_NORMAL,
 117         TRANSPORT_SSH,
 118         TRANSPORT_POLKIT
 119 } arg_transport = TRANSPORT_NORMAL;
 120 static const char *arg_host = NULL;
 121
 122 static bool private_bus = false;
 123
 124 static int daemon_reload(DBusConnection *bus, char **args);
 125
 126 static bool on_tty(void) {
 127         static int t = -1;
 128
 129         /* Note that this is invoked relatively early, before we start
 130          * the pager. That means the value we return reflects whether
 131          * we originally were started on a tty, not if we currently
 132          * are. But this is intended, since we want colour and so on
 133          * when run in our own pager. */
 134
 135         if (_unlikely_(t < 0))
 136                 t = isatty(STDOUT_FILENO) > 0;
 137
 138         return t;
 139 }
 140
 141 static void pager_open_if_enabled(void) {
 142
 143         /* Cache result before we open the pager */
 144         on_tty();
 145
 146         if (arg_no_pager)
 147                 return;
 148
 149         pager_open();
 150 }
 151
 152 static void agent_open_if_enabled(void) {
 153
 154         /* Open the password agent as a child process if necessary */
 155
 156         if (!arg_ask_password)
 157                 return;
 158
 159         if (arg_scope != UNIT_FILE_SYSTEM)
 160                 return;
 161
 162         agent_open();
 163 }
 164
 165 static const char *ansi_highlight(bool b) {
 166
 167         if (!on_tty())
 168                 return "";
 169
 170         return b ? ANSI_HIGHLIGHT_ON : ANSI_HIGHLIGHT_OFF;
 171 }
 172
 173 static const char *ansi_highlight_green(bool b) {
 174
 175         if (!on_tty())
 176                 return "";
 177
 178         return b ? ANSI_HIGHLIGHT_GREEN_ON : ANSI_HIGHLIGHT_OFF;
 179 }
 180
 181 static bool error_is_no_service(const DBusError *error) {
 182         assert(error);
 183
 184         if (!dbus_error_is_set(error))
 185                 return false;
 186
 187         if (dbus_error_has_name(error, DBUS_ERROR_NAME_HAS_NO_OWNER))
 188                 return true;
 189
 190         if (dbus_error_has_name(error, DBUS_ERROR_SERVICE_UNKNOWN))
 191                 return true;
 192
 193         return startswith(error->name, "org.freedesktop.DBus.Error.Spawn.");
 194 }
 195
 196 static int translate_bus_error_to_exit_status(int r, const DBusError *error) {
 197         assert(error);
 198
 199         if (!dbus_error_is_set(error))
 200                 return r;
 201
 202         if (dbus_error_has_name(error, DBUS_ERROR_ACCESS_DENIED) ||
 203             dbus_error_has_name(error, BUS_ERROR_ONLY_BY_DEPENDENCY) ||
 204             dbus_error_has_name(error, BUS_ERROR_NO_ISOLATION) ||
 205             dbus_error_has_name(error, BUS_ERROR_TRANSACTION_IS_DESTRUCTIVE))
 206                 return EXIT_NOPERMISSION;
 207
 208         if (dbus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT))
 209                 return EXIT_NOTINSTALLED;
 210
 211         if (dbus_error_has_name(error, BUS_ERROR_JOB_TYPE_NOT_APPLICABLE) ||
 212             dbus_error_has_name(error, BUS_ERROR_NOT_SUPPORTED))
 213                 return EXIT_NOTIMPLEMENTED;
 214
 215         if (dbus_error_has_name(error, BUS_ERROR_LOAD_FAILED))
 216                 return EXIT_NOTCONFIGURED;
 217
 218         if (r != 0)
 219                 return r;
 220
 221         return EXIT_FAILURE;
 222 }
 223
 224 static void warn_wall(enum action action) {
 225         static const char *table[_ACTION_MAX] = {
 226                 [ACTION_HALT]      = "The system is going down for system halt NOW!",
 227                 [ACTION_REBOOT]    = "The system is going down for reboot NOW!",
 228                 [ACTION_POWEROFF]  = "The system is going down for power-off NOW!",
 229                 [ACTION_KEXEC]     = "The system is going down for kexec reboot NOW!",
 230                 [ACTION_RESCUE]    = "The system is going down to rescue mode NOW!",
 231                 [ACTION_EMERGENCY] = "The system is going down to emergency mode NOW!"
 232         };
 233
 234         if (arg_no_wall)
 235                 return;
 236
 237         if (arg_wall) {
 238                 char *p;
 239
 240                 if (!(p = strv_join(arg_wall, " "))) {
 241                         log_error("Failed to join strings.");
 242                         return;
 243                 }
 244
 245                 if (*p) {
 246                         utmp_wall(p, NULL);
 247                         free(p);
 248                         return;
 249                 }
 250
 251                 free(p);
 252         }
 253
 254         if (!table[action])
 255                 return;
 256
 257         utmp_wall(table[action], NULL);
 258 }
 259
 260 static bool avoid_bus(void) {
 261
 262         if (running_in_chroot() > 0)
 263                 return true;
 264
 265         if (sd_booted() <= 0)
 266                 return true;
 267
 268         if (!isempty(arg_root))
 269                 return true;
 270
 271         if (arg_scope == UNIT_FILE_GLOBAL)
 272                 return true;
 273
 274         return false;
 275 }
 276
 277 struct unit_info {
 278         const char *id;
 279         const char *description;
 280         const char *load_state;
 281         const char *active_state;
 282         const char *sub_state;
 283         const char *following;
 284         const char *unit_path;
 285         uint32_t job_id;
 286         const char *job_type;
 287         const char *job_path;
 288 };
 289
 290 static int compare_unit_info(const void *a, const void *b) {
 291         const char *d1, *d2;
 292         const struct unit_info *u = a, *v = b;
 293
 294         d1 = strrchr(u->id, '.');
 295         d2 = strrchr(v->id, '.');
 296
 297         if (d1 && d2) {
 298                 int r;
 299
 300                 if ((r = strcasecmp(d1, d2)) != 0)
 301                         return r;
 302         }
 303
 304         return strcasecmp(u->id, v->id);
 305 }
 306
 307 static bool output_show_unit(const struct unit_info *u) {
 308         const char *dot;
 309
 310         if (arg_failed)
 311                 return streq(u->active_state, "failed");
 312
 313         return (!arg_type || ((dot = strrchr(u->id, '.')) &&
 314                               streq(dot+1, arg_type))) &&
 315                 (arg_all || !(streq(u->active_state, "inactive") || u->following[0]) || u->job_id > 0);
 316 }
 317
 318 static void output_units_list(const struct unit_info *unit_infos, unsigned c) {
 319         unsigned id_len, max_id_len, active_len, sub_len, job_len, desc_len, n_shown = 0;
 320         const struct unit_info *u;
 321
 322         max_id_len = sizeof("UNIT")-1;
 323         active_len = sizeof("ACTIVE")-1;
 324         sub_len = sizeof("SUB")-1;
 325         job_len = sizeof("JOB")-1;
 326         desc_len = 0;
 327
 328         for (u = unit_infos; u < unit_infos + c; u++) {
 329                 if (!output_show_unit(u))
 330                         continue;
 331
 332                 max_id_len = MAX(max_id_len, strlen(u->id));
 333                 active_len = MAX(active_len, strlen(u->active_state));
 334                 sub_len = MAX(sub_len, strlen(u->sub_state));
 335                 if (u->job_id != 0)
 336                         job_len = MAX(job_len, strlen(u->job_type));
 337         }
 338
 339         if (!arg_full) {
 340                 unsigned basic_len;
 341                 id_len = MIN(max_id_len, 25);
 342                 basic_len = 5 + id_len + 6 + active_len + sub_len + job_len;
 343                 if (basic_len < (unsigned) columns()) {
 344                         unsigned extra_len, incr;
 345                         extra_len = columns() - basic_len;
 346                         /* Either UNIT already got 25, or is fully satisfied.
 347                          * Grant up to 25 to DESC now. */
 348                         incr = MIN(extra_len, 25);
 349                         desc_len += incr;
 350                         extra_len -= incr;
 351                         /* split the remaining space between UNIT and DESC,
 352                          * but do not give UNIT more than it needs. */
 353                         if (extra_len > 0) {
 354                                 incr = MIN(extra_len / 2, max_id_len - id_len);
 355                                 id_len += incr;
 356                                 desc_len += extra_len - incr;
 357                         }
 358                 }
 359         } else
 360                 id_len = max_id_len;
 361
 362         if (!arg_no_legend) {
 363                 printf("%-*s %-6s %-*s %-*s %-*s ", id_len, "UNIT", "LOAD",
 364                        active_len, "ACTIVE", sub_len, "SUB", job_len, "JOB");
 365                 if (!arg_full && arg_no_pager)
 366                         printf("%.*s\n", desc_len, "DESCRIPTION");
 367                 else
 368                         printf("%s\n", "DESCRIPTION");
 369         }
 370
 371         for (u = unit_infos; u < unit_infos + c; u++) {
 372                 char *e;
 373                 const char *on_loaded, *off_loaded;
 374                 const char *on_active, *off_active;
 375
 376                 if (!output_show_unit(u))
 377                         continue;
 378
 379                 n_shown++;
 380
 381                 if (streq(u->load_state, "error")) {
 382                         on_loaded = ansi_highlight(true);
 383                         off_loaded = ansi_highlight(false);
 384                 } else
 385                         on_loaded = off_loaded = "";
 386
 387                 if (streq(u->active_state, "failed")) {
 388                         on_active = ansi_highlight(true);
 389                         off_active = ansi_highlight(false);
 390                 } else
 391                         on_active = off_active = "";
 392
 393                 e = arg_full ? NULL : ellipsize(u->id, id_len, 33);
 394
 395                 printf("%-*s %s%-6s%s %s%-*s %-*s%s %-*s ",
 396                        id_len, e ? e : u->id,
 397                        on_loaded, u->load_state, off_loaded,
 398                        on_active, active_len, u->active_state,
 399                        sub_len, u->sub_state, off_active,
 400                        job_len, u->job_id ? u->job_type : "");
 401                 if (!arg_full && arg_no_pager)
 402                         printf("%.*s\n", desc_len, u->description);
 403                 else
 404                         printf("%s\n", u->description);
 405
 406                 free(e);
 407         }
 408
 409         if (!arg_no_legend) {
 410                 printf("\nLOAD   = Reflects whether the unit definition was properly loaded.\n"
 411                        "ACTIVE = The high-level unit activation state, i.e. generalization of SUB.\n"
 412                        "SUB    = The low-level unit activation state, values depend on unit type.\n"
 413                        "JOB    = Pending job for the unit.\n");
 414
 415                 if (arg_all)
 416                         printf("\n%u units listed.\n", n_shown);
 417                 else
 418                         printf("\n%u units listed. Pass --all to see inactive units, too.\n", n_shown);
 419         }
 420 }
 421
 422 static int list_units(DBusConnection *bus, char **args) {
 423         DBusMessage *m = NULL, *reply = NULL;
 424         DBusError error;
 425         int r;
 426         DBusMessageIter iter, sub, sub2;
 427         unsigned c = 0, n_units = 0;
 428         struct unit_info *unit_infos = NULL;
 429
 430         dbus_error_init(&error);
 431
 432         assert(bus);
 433
 434         pager_open_if_enabled();
 435
 436         if (!(m = dbus_message_new_method_call(
 437                               "org.freedesktop.systemd1",
 438                               "/org/freedesktop/systemd1",
 439                               "org.freedesktop.systemd1.Manager",
 440                               "ListUnits"))) {
 441                 log_error("Could not allocate message.");
 442                 return -ENOMEM;
 443         }
 444
 445         if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
 446                 log_error("Failed to issue method call: %s", bus_error_message(&error));
 447                 r = -EIO;
 448                 goto finish;
 449         }
 450
 451         if (!dbus_message_iter_init(reply, &iter) ||
 452             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
 453             dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT)  {
 454                 log_error("Failed to parse reply.");
 455                 r = -EIO;
 456                 goto finish;
 457         }
 458
 459         dbus_message_iter_recurse(&iter, &sub);
 460
 461         while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
 462                 struct unit_info *u;
 463
 464                 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
 465                         log_error("Failed to parse reply.");
 466                         r = -EIO;
 467                         goto finish;
 468                 }
 469
 470                 if (c >= n_units) {
 471                         struct unit_info *w;
 472
 473                         n_units = MAX(2*c, 16);
 474                         w = realloc(unit_infos, sizeof(struct unit_info) * n_units);
 475
 476                         if (!w) {
 477                                 log_error("Failed to allocate unit array.");
 478                                 r = -ENOMEM;
 479                                 goto finish;
 480                         }
 481
 482                         unit_infos = w;
 483                 }
 484
 485                 u = unit_infos+c;
 486
 487                 dbus_message_iter_recurse(&sub, &sub2);
 488
 489                 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->id, true) < 0 ||
 490                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->description, true) < 0 ||
 491                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->load_state, true) < 0 ||
 492                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->active_state, true) < 0 ||
 493                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->sub_state, true) < 0 ||
 494                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->following, true) < 0 ||
 495                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &u->unit_path, true) < 0 ||
 496                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &u->job_id, true) < 0 ||
 497                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->job_type, true) < 0 ||
 498                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &u->job_path, false) < 0) {
 499                         log_error("Failed to parse reply.");
 500                         r = -EIO;
 501                         goto finish;
 502                 }
 503
 504                 dbus_message_iter_next(&sub);
 505                 c++;
 506         }
 507
 508         if (c > 0) {
 509                 qsort(unit_infos, c, sizeof(struct unit_info), compare_unit_info);
 510                 output_units_list(unit_infos, c);
 511         }
 512
 513         r = 0;
 514
 515 finish:
 516         if (m)
 517                 dbus_message_unref(m);
 518
 519         if (reply)
 520                 dbus_message_unref(reply);
 521
 522         free(unit_infos);
 523
 524         dbus_error_free(&error);
 525
 526         return r;
 527 }
 528
 529 static int compare_unit_file_list(const void *a, const void *b) {
 530         const char *d1, *d2;
 531         const UnitFileList *u = a, *v = b;
 532
 533         d1 = strrchr(u->path, '.');
 534         d2 = strrchr(v->path, '.');
 535
 536         if (d1 && d2) {
 537                 int r;
 538
 539                 r = strcasecmp(d1, d2);
 540                 if (r != 0)
 541                         return r;
 542         }
 543
 544         return strcasecmp(file_name_from_path(u->path), file_name_from_path(v->path));
 545 }
 546
 547 static bool output_show_unit_file(const UnitFileList *u) {
 548         const char *dot;
 549
 550         return !arg_type || ((dot = strrchr(u->path, '.')) && streq(dot+1, arg_type));
 551 }
 552
 553 static void output_unit_file_list(const UnitFileList *units, unsigned c) {
 554         unsigned max_id_len, id_cols, state_cols, n_shown = 0;
 555         const UnitFileList *u;
 556
 557         max_id_len = sizeof("UNIT FILE")-1;
 558         state_cols = sizeof("STATE")-1;
 559         for (u = units; u < units + c; u++) {
 560                 if (!output_show_unit_file(u))
 561                         continue;
 562
 563                 max_id_len = MAX(max_id_len, strlen(file_name_from_path(u->path)));
 564                 state_cols = MAX(state_cols, strlen(unit_file_state_to_string(u->state)));
 565         }
 566
 567         if (!arg_full) {
 568                 unsigned basic_cols;
 569                 id_cols = MIN(max_id_len, 25);
 570                 basic_cols = 1 + id_cols + state_cols;
 571                 if (basic_cols < (unsigned) columns())
 572                         id_cols += MIN(columns() - basic_cols, max_id_len - id_cols);
 573         } else
 574                 id_cols = max_id_len;
 575
 576         if (!arg_no_legend)
 577                 printf("%-*s %-*s\n", id_cols, "UNIT FILE", state_cols, "STATE");
 578
 579         for (u = units; u < units + c; u++) {
 580                 char *e;
 581                 const char *on, *off;
 582                 const char *id;
 583
 584                 if (!output_show_unit_file(u))
 585                         continue;
 586
 587                 n_shown++;
 588
 589                 if (u->state == UNIT_FILE_MASKED ||
 590                     u->state == UNIT_FILE_MASKED_RUNTIME ||
 591                     u->state == UNIT_FILE_DISABLED) {
 592                         on  = ansi_highlight(true);
 593                         off = ansi_highlight(false);
 594                 } else if (u->state == UNIT_FILE_ENABLED) {
 595                         on  = ansi_highlight_green(true);
 596                         off = ansi_highlight_green(false);
 597                 } else
 598                         on = off = "";
 599
 600                 id = file_name_from_path(u->path);
 601
 602                 e = arg_full ? NULL : ellipsize(id, id_cols, 33);
 603
 604                 printf("%-*s %s%-*s%s\n",
 605                        id_cols, e ? e : id,
 606                        on, state_cols, unit_file_state_to_string(u->state), off);
 607
 608                 free(e);
 609         }
 610
 611         if (!arg_no_legend)
 612                 printf("\n%u unit files listed.\n", n_shown);
 613 }
 614
 615 static int list_unit_files(DBusConnection *bus, char **args) {
 616         DBusMessage *m = NULL, *reply = NULL;
 617         DBusError error;
 618         int r;
 619         DBusMessageIter iter, sub, sub2;
 620         unsigned c = 0, n_units = 0;
 621         UnitFileList *units = NULL;
 622
 623         dbus_error_init(&error);
 624
 625         pager_open_if_enabled();
 626
 627         if (avoid_bus()) {
 628                 Hashmap *h;
 629                 UnitFileList *u;
 630                 Iterator i;
 631
 632                 h = hashmap_new(string_hash_func, string_compare_func);
 633                 if (!h) {
 634                         log_error("Out of memory");
 635                         return -ENOMEM;
 636                 }
 637
 638                 r = unit_file_get_list(arg_scope, arg_root, h);
 639                 if (r < 0) {
 640                         unit_file_list_free(h);
 641                         log_error("Failed to get unit file list: %s", strerror(-r));
 642                         return r;
 643                 }
 644
 645                 n_units = hashmap_size(h);
 646                 units = new(UnitFileList, n_units);
 647                 if (!units) {
 648                         unit_file_list_free(h);
 649                         log_error("Out of memory");
 650                         return -ENOMEM;
 651                 }
 652
 653                 HASHMAP_FOREACH(u, h, i) {
 654                         memcpy(units + c++, u, sizeof(UnitFileList));
 655                         free(u);
 656                 }
 657
 658                 hashmap_free(h);
 659         } else {
 660                 assert(bus);
 661
 662                 m = dbus_message_new_method_call(
 663                                 "org.freedesktop.systemd1",
 664                                 "/org/freedesktop/systemd1",
 665                                 "org.freedesktop.systemd1.Manager",
 666                                 "ListUnitFiles");
 667                 if (!m) {
 668                         log_error("Could not allocate message.");
 669                         return -ENOMEM;
 670                 }
 671
 672                 reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
 673                 if (!reply) {
 674                         log_error("Failed to issue method call: %s", bus_error_message(&error));
 675                         r = -EIO;
 676                         goto finish;
 677                 }
 678
 679                 if (!dbus_message_iter_init(reply, &iter) ||
 680                     dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
 681                     dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT)  {
 682                         log_error("Failed to parse reply.");
 683                         r = -EIO;
 684                         goto finish;
 685                 }
 686
 687                 dbus_message_iter_recurse(&iter, &sub);
 688
 689                 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
 690                         UnitFileList *u;
 691                         const char *state;
 692
 693                         if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
 694                                 log_error("Failed to parse reply.");
 695                                 r = -EIO;
 696                                 goto finish;
 697                         }
 698
 699                         if (c >= n_units) {
 700                                 UnitFileList *w;
 701
 702                                 n_units = MAX(2*c, 16);
 703                                 w = realloc(units, sizeof(struct UnitFileList) * n_units);
 704
 705                                 if (!w) {
 706                                         log_error("Failed to allocate unit array.");
 707                                         r = -ENOMEM;
 708                                         goto finish;
 709                                 }
 710
 711                                 units = w;
 712                         }
 713
 714                         u = units+c;
 715
 716                         dbus_message_iter_recurse(&sub, &sub2);
 717
 718                         if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &u->path, true) < 0 ||
 719                             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &state, false) < 0) {
 720                                 log_error("Failed to parse reply.");
 721                                 r = -EIO;
 722                                 goto finish;
 723                         }
 724
 725                         u->state = unit_file_state_from_string(state);
 726
 727                         dbus_message_iter_next(&sub);
 728                         c++;
 729                 }
 730         }
 731
 732         if (c > 0) {
 733                 qsort(units, c, sizeof(UnitFileList), compare_unit_file_list);
 734                 output_unit_file_list(units, c);
 735         }
 736
 737         r = 0;
 738
 739 finish:
 740         if (m)
 741                 dbus_message_unref(m);
 742
 743         if (reply)
 744                 dbus_message_unref(reply);
 745
 746         free(units);
 747
 748         dbus_error_free(&error);
 749
 750         return r;
 751 }
 752
 753 static int dot_one_property(const char *name, const char *prop, DBusMessageIter *iter) {
 754         static const char * const colors[] = {
 755                 "Requires",              "[color=\"black\"]",
 756                 "RequiresOverridable",   "[color=\"black\"]",
 757                 "Requisite",             "[color=\"darkblue\"]",
 758                 "RequisiteOverridable",  "[color=\"darkblue\"]",
 759                 "Wants",                 "[color=\"darkgrey\"]",
 760                 "Conflicts",             "[color=\"red\"]",
 761                 "ConflictedBy",          "[color=\"red\"]",
 762                 "After",                 "[color=\"green\"]"
 763         };
 764
 765         const char *c = NULL;
 766         unsigned i;
 767
 768         assert(name);
 769         assert(prop);
 770         assert(iter);
 771
 772         for (i = 0; i < ELEMENTSOF(colors); i += 2)
 773                 if (streq(colors[i], prop)) {
 774                         c = colors[i+1];
 775                         break;
 776                 }
 777
 778         if (!c)
 779                 return 0;
 780
 781         if (arg_dot != DOT_ALL)
 782                 if ((arg_dot == DOT_ORDER) != streq(prop, "After"))
 783                         return 0;
 784
 785         switch (dbus_message_iter_get_arg_type(iter)) {
 786
 787         case DBUS_TYPE_ARRAY:
 788
 789                 if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRING) {
 790                         DBusMessageIter sub;
 791
 792                         dbus_message_iter_recurse(iter, &sub);
 793
 794                         while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
 795                                 const char *s;
 796
 797                                 assert(dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING);
 798                                 dbus_message_iter_get_basic(&sub, &s);
 799                                 printf("\t\"%s\"->\"%s\" %s;\n", name, s, c);
 800
 801                                 dbus_message_iter_next(&sub);
 802                         }
 803
 804                         return 0;
 805                 }
 806         }
 807
 808         return 0;
 809 }
 810
 811 static int dot_one(DBusConnection *bus, const char *name, const char *path) {
 812         DBusMessage *m = NULL, *reply = NULL;
 813         const char *interface = "org.freedesktop.systemd1.Unit";
 814         int r;
 815         DBusError error;
 816         DBusMessageIter iter, sub, sub2, sub3;
 817
 818         assert(bus);
 819         assert(path);
 820
 821         dbus_error_init(&error);
 822
 823         if (!(m = dbus_message_new_method_call(
 824                               "org.freedesktop.systemd1",
 825                               path,
 826                               "org.freedesktop.DBus.Properties",
 827                               "GetAll"))) {
 828                 log_error("Could not allocate message.");
 829                 r = -ENOMEM;
 830                 goto finish;
 831         }
 832
 833         if (!dbus_message_append_args(m,
 834                                       DBUS_TYPE_STRING, &interface,
 835                                       DBUS_TYPE_INVALID)) {
 836                 log_error("Could not append arguments to message.");
 837                 r = -ENOMEM;
 838                 goto finish;
 839         }
 840
 841         if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
 842                 log_error("Failed to issue method call: %s", bus_error_message(&error));
 843                 r = -EIO;
 844                 goto finish;
 845         }
 846
 847         if (!dbus_message_iter_init(reply, &iter) ||
 848             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
 849             dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_DICT_ENTRY)  {
 850                 log_error("Failed to parse reply.");
 851                 r = -EIO;
 852                 goto finish;
 853         }
 854
 855         dbus_message_iter_recurse(&iter, &sub);
 856
 857         while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
 858                 const char *prop;
 859
 860                 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_DICT_ENTRY) {
 861                         log_error("Failed to parse reply.");
 862                         r = -EIO;
 863                         goto finish;
 864                 }
 865
 866                 dbus_message_iter_recurse(&sub, &sub2);
 867
 868                 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &prop, true) < 0) {
 869                         log_error("Failed to parse reply.");
 870                         r = -EIO;
 871                         goto finish;
 872                 }
 873
 874                 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT)  {
 875                         log_error("Failed to parse reply.");
 876                         r = -EIO;
 877                         goto finish;
 878                 }
 879
 880                 dbus_message_iter_recurse(&sub2, &sub3);
 881
 882                 if (dot_one_property(name, prop, &sub3)) {
 883                         log_error("Failed to parse reply.");
 884                         r = -EIO;
 885                         goto finish;
 886                 }
 887
 888                 dbus_message_iter_next(&sub);
 889         }
 890
 891         r = 0;
 892
 893 finish:
 894         if (m)
 895                 dbus_message_unref(m);
 896
 897         if (reply)
 898                 dbus_message_unref(reply);
 899
 900         dbus_error_free(&error);
 901
 902         return r;
 903 }
 904
 905 static int dot(DBusConnection *bus, char **args) {
 906         DBusMessage *m = NULL, *reply = NULL;
 907         DBusError error;
 908         int r;
 909         DBusMessageIter iter, sub, sub2;
 910
 911         dbus_error_init(&error);
 912
 913         assert(bus);
 914
 915         if (!(m = dbus_message_new_method_call(
 916                               "org.freedesktop.systemd1",
 917                               "/org/freedesktop/systemd1",
 918                               "org.freedesktop.systemd1.Manager",
 919                               "ListUnits"))) {
 920                 log_error("Could not allocate message.");
 921                 return -ENOMEM;
 922         }
 923
 924         if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
 925                 log_error("Failed to issue method call: %s", bus_error_message(&error));
 926                 r = -EIO;
 927                 goto finish;
 928         }
 929
 930         if (!dbus_message_iter_init(reply, &iter) ||
 931             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
 932             dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT)  {
 933                 log_error("Failed to parse reply.");
 934                 r = -EIO;
 935                 goto finish;
 936         }
 937
 938         printf("digraph systemd {\n");
 939
 940         dbus_message_iter_recurse(&iter, &sub);
 941         while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
 942                 const char *id, *description, *load_state, *active_state, *sub_state, *following, *unit_path;
 943
 944                 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
 945                         log_error("Failed to parse reply.");
 946                         r = -EIO;
 947                         goto finish;
 948                 }
 949
 950                 dbus_message_iter_recurse(&sub, &sub2);
 951
 952                 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &id, true) < 0 ||
 953                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &description, true) < 0 ||
 954                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &load_state, true) < 0 ||
 955                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &active_state, true) < 0 ||
 956                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &sub_state, true) < 0 ||
 957                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &following, true) < 0 ||
 958                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &unit_path, true) < 0) {
 959                         log_error("Failed to parse reply.");
 960                         r = -EIO;
 961                         goto finish;
 962                 }
 963
 964                 if ((r = dot_one(bus, id, unit_path)) < 0)
 965                         goto finish;
 966
 967                 /* printf("\t\"%s\";\n", id); */
 968                 dbus_message_iter_next(&sub);
 969         }
 970
 971         printf("}\n");
 972
 973         log_info("   Color legend: black     = Requires\n"
 974                  "                 dark blue = Requisite\n"
 975                  "                 dark grey = Wants\n"
 976                  "                 red       = Conflicts\n"
 977                  "                 green     = After\n");
 978
 979         if (on_tty())
 980                 log_notice("-- You probably want to process this output with graphviz' dot tool.\n"
 981                            "-- Try a shell pipeline like 'systemctl dot | dot -Tsvg > systemd.svg'!\n");
 982
 983         r = 0;
 984
 985 finish:
 986         if (m)
 987                 dbus_message_unref(m);
 988
 989         if (reply)
 990                 dbus_message_unref(reply);
 991
 992         dbus_error_free(&error);
 993
 994         return r;
 995 }
 996
 997 static int list_jobs(DBusConnection *bus, char **args) {
 998         DBusMessage *m = NULL, *reply = NULL;
 999         DBusError error;
1000         int r;
1001         DBusMessageIter iter, sub, sub2;
1002         unsigned k = 0;
1003
1004         dbus_error_init(&error);
1005
1006         assert(bus);
1007
1008         pager_open_if_enabled();
1009
1010         if (!(m = dbus_message_new_method_call(
1011                               "org.freedesktop.systemd1",
1012                               "/org/freedesktop/systemd1",
1013                               "org.freedesktop.systemd1.Manager",
1014                               "ListJobs"))) {
1015                 log_error("Could not allocate message.");
1016                 return -ENOMEM;
1017         }
1018
1019         if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1020                 log_error("Failed to issue method call: %s", bus_error_message(&error));
1021                 r = -EIO;
1022                 goto finish;
1023         }
1024
1025         if (!dbus_message_iter_init(reply, &iter) ||
1026             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
1027             dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT)  {
1028                 log_error("Failed to parse reply.");
1029                 r = -EIO;
1030                 goto finish;
1031         }
1032
1033         dbus_message_iter_recurse(&iter, &sub);
1034
1035         if (on_tty())
1036                 printf("%4s %-25s %-15s %-7s\n", "JOB", "UNIT", "TYPE", "STATE");
1037
1038         while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
1039                 const char *name, *type, *state, *job_path, *unit_path;
1040                 uint32_t id;
1041                 char *e;
1042
1043                 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
1044                         log_error("Failed to parse reply.");
1045                         r = -EIO;
1046                         goto finish;
1047                 }
1048
1049                 dbus_message_iter_recurse(&sub, &sub2);
1050
1051                 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &id, true) < 0 ||
1052                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0 ||
1053                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) < 0 ||
1054                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &state, true) < 0 ||
1055                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &job_path, true) < 0 ||
1056                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_OBJECT_PATH, &unit_path, false) < 0) {
1057                         log_error("Failed to parse reply.");
1058                         r = -EIO;
1059                         goto finish;
1060                 }
1061
1062                 e = arg_full ? NULL : ellipsize(name, 25, 33);
1063                 printf("%4u %-25s %-15s %-7s\n", id, e ? e : name, type, state);
1064                 free(e);
1065
1066                 k++;
1067
1068                 dbus_message_iter_next(&sub);
1069         }
1070
1071         if (on_tty())
1072                 printf("\n%u jobs listed.\n", k);
1073
1074         r = 0;
1075
1076 finish:
1077         if (m)
1078                 dbus_message_unref(m);
1079
1080         if (reply)
1081                 dbus_message_unref(reply);
1082
1083         dbus_error_free(&error);
1084
1085         return r;
1086 }
1087
1088 static int load_unit(DBusConnection *bus, char **args) {
1089         DBusMessage *m = NULL;
1090         DBusError error;
1091         int r;
1092         char **name;
1093
1094         dbus_error_init(&error);
1095
1096         assert(bus);
1097         assert(args);
1098
1099         STRV_FOREACH(name, args+1) {
1100                 DBusMessage *reply;
1101
1102                 if (!(m = dbus_message_new_method_call(
1103                                       "org.freedesktop.systemd1",
1104                                       "/org/freedesktop/systemd1",
1105                                       "org.freedesktop.systemd1.Manager",
1106                                       "LoadUnit"))) {
1107                         log_error("Could not allocate message.");
1108                         r = -ENOMEM;
1109                         goto finish;
1110                 }
1111
1112                 if (!dbus_message_append_args(m,
1113                                               DBUS_TYPE_STRING, name,
1114                                               DBUS_TYPE_INVALID)) {
1115                         log_error("Could not append arguments to message.");
1116                         r = -ENOMEM;
1117                         goto finish;
1118                 }
1119
1120                 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1121                         log_error("Failed to issue method call: %s", bus_error_message(&error));
1122                         r = -EIO;
1123                         goto finish;
1124                 }
1125
1126                 dbus_message_unref(m);
1127                 dbus_message_unref(reply);
1128
1129                 m = reply = NULL;
1130         }
1131
1132         r = 0;
1133
1134 finish:
1135         if (m)
1136                 dbus_message_unref(m);
1137
1138         dbus_error_free(&error);
1139
1140         return r;
1141 }
1142
1143 static int cancel_job(DBusConnection *bus, char **args) {
1144         DBusMessage *m = NULL, *reply = NULL;
1145         DBusError error;
1146         int r;
1147         char **name;
1148
1149         dbus_error_init(&error);
1150
1151         assert(bus);
1152         assert(args);
1153
1154         if (strv_length(args) <= 1)
1155                 return daemon_reload(bus, args);
1156
1157         STRV_FOREACH(name, args+1) {
1158                 unsigned id;
1159                 const char *path;
1160
1161                 if (!(m = dbus_message_new_method_call(
1162                                       "org.freedesktop.systemd1",
1163                                       "/org/freedesktop/systemd1",
1164                                       "org.freedesktop.systemd1.Manager",
1165                                       "GetJob"))) {
1166                         log_error("Could not allocate message.");
1167                         r = -ENOMEM;
1168                         goto finish;
1169                 }
1170
1171                 if ((r = safe_atou(*name, &id)) < 0) {
1172                         log_error("Failed to parse job id: %s", strerror(-r));
1173                         goto finish;
1174                 }
1175
1176                 assert_cc(sizeof(uint32_t) == sizeof(id));
1177                 if (!dbus_message_append_args(m,
1178                                               DBUS_TYPE_UINT32, &id,
1179                                               DBUS_TYPE_INVALID)) {
1180                         log_error("Could not append arguments to message.");
1181                         r = -ENOMEM;
1182                         goto finish;
1183                 }
1184
1185                 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1186                         log_error("Failed to issue method call: %s", bus_error_message(&error));
1187                         r = -EIO;
1188                         goto finish;
1189                 }
1190
1191                 if (!dbus_message_get_args(reply, &error,
1192                                            DBUS_TYPE_OBJECT_PATH, &path,
1193                                            DBUS_TYPE_INVALID)) {
1194                         log_error("Failed to parse reply: %s", bus_error_message(&error));
1195                         r = -EIO;
1196                         goto finish;
1197                 }
1198
1199                 dbus_message_unref(m);
1200                 if (!(m = dbus_message_new_method_call(
1201                                       "org.freedesktop.systemd1",
1202                                       path,
1203                                       "org.freedesktop.systemd1.Job",
1204                                       "Cancel"))) {
1205                         log_error("Could not allocate message.");
1206                         r = -ENOMEM;
1207                         goto finish;
1208                 }
1209
1210                 dbus_message_unref(reply);
1211                 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1212                         log_error("Failed to issue method call: %s", bus_error_message(&error));
1213                         r = -EIO;
1214                         goto finish;
1215                 }
1216
1217                 dbus_message_unref(m);
1218                 dbus_message_unref(reply);
1219                 m = reply = NULL;
1220         }
1221
1222         r = 0;
1223
1224 finish:
1225         if (m)
1226                 dbus_message_unref(m);
1227
1228         if (reply)
1229                 dbus_message_unref(reply);
1230
1231         dbus_error_free(&error);
1232
1233         return r;
1234 }
1235
1236 static bool need_daemon_reload(DBusConnection *bus, const char *unit) {
1237         DBusMessage *m = NULL, *reply = NULL;
1238         dbus_bool_t b = FALSE;
1239         DBusMessageIter iter, sub;
1240         const char
1241                 *interface = "org.freedesktop.systemd1.Unit",
1242                 *property = "NeedDaemonReload",
1243                 *path;
1244
1245         /* We ignore all errors here, since this is used to show a warning only */
1246
1247         if (!(m = dbus_message_new_method_call(
1248                               "org.freedesktop.systemd1",
1249                               "/org/freedesktop/systemd1",
1250                               "org.freedesktop.systemd1.Manager",
1251                               "GetUnit")))
1252                 goto finish;
1253
1254         if (!dbus_message_append_args(m,
1255                                       DBUS_TYPE_STRING, &unit,
1256                                       DBUS_TYPE_INVALID))
1257                 goto finish;
1258
1259         if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, NULL)))
1260                 goto finish;
1261
1262         if (!dbus_message_get_args(reply, NULL,
1263                                    DBUS_TYPE_OBJECT_PATH, &path,
1264                                    DBUS_TYPE_INVALID))
1265                 goto finish;
1266
1267         dbus_message_unref(m);
1268         if (!(m = dbus_message_new_method_call(
1269                               "org.freedesktop.systemd1",
1270                               path,
1271                               "org.freedesktop.DBus.Properties",
1272                               "Get")))
1273                 goto finish;
1274
1275         if (!dbus_message_append_args(m,
1276                                       DBUS_TYPE_STRING, &interface,
1277                                       DBUS_TYPE_STRING, &property,
1278                                       DBUS_TYPE_INVALID)) {
1279                 goto finish;
1280         }
1281
1282         dbus_message_unref(reply);
1283         if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, NULL)))
1284                 goto finish;
1285
1286         if (!dbus_message_iter_init(reply, &iter) ||
1287             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT)
1288                 goto finish;
1289
1290         dbus_message_iter_recurse(&iter, &sub);
1291
1292         if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_BOOLEAN)
1293                 goto finish;
1294
1295         dbus_message_iter_get_basic(&sub, &b);
1296
1297 finish:
1298         if (m)
1299                 dbus_message_unref(m);
1300
1301         if (reply)
1302                 dbus_message_unref(reply);
1303
1304         return b;
1305 }
1306
1307 typedef struct WaitData {
1308         Set *set;
1309         char *result;
1310 } WaitData;
1311
1312 static DBusHandlerResult wait_filter(DBusConnection *connection, DBusMessage *message, void *data) {
1313         DBusError error;
1314         WaitData *d = data;
1315
1316         assert(connection);
1317         assert(message);
1318         assert(d);
1319
1320         dbus_error_init(&error);
1321
1322         log_debug("Got D-Bus request: %s.%s() on %s",
1323                   dbus_message_get_interface(message),
1324                   dbus_message_get_member(message),
1325                   dbus_message_get_path(message));
1326
1327         if (dbus_message_is_signal(message, DBUS_INTERFACE_LOCAL, "Disconnected")) {
1328                 log_error("Warning! D-Bus connection terminated.");
1329                 dbus_connection_close(connection);
1330
1331         } else if (dbus_message_is_signal(message, "org.freedesktop.systemd1.Manager", "JobRemoved")) {
1332                 uint32_t id;
1333                 const char *path, *result;
1334                 dbus_bool_t success = true;
1335
1336                 if (dbus_message_get_args(message, &error,
1337                                           DBUS_TYPE_UINT32, &id,
1338                                           DBUS_TYPE_OBJECT_PATH, &path,
1339                                           DBUS_TYPE_STRING, &result,
1340                                           DBUS_TYPE_INVALID)) {
1341                         char *p;
1342
1343                         if ((p = set_remove(d->set, (char*) path)))
1344                                 free(p);
1345
1346                         if (*result)
1347                                 d->result = strdup(result);
1348
1349                         goto finish;
1350                 }
1351 #ifndef LEGACY
1352                 dbus_error_free(&error);
1353
1354                 if (dbus_message_get_args(message, &error,
1355                                           DBUS_TYPE_UINT32, &id,
1356                                           DBUS_TYPE_OBJECT_PATH, &path,
1357                                           DBUS_TYPE_BOOLEAN, &success,
1358                                           DBUS_TYPE_INVALID)) {
1359                         char *p;
1360
1361                         /* Compatibility with older systemd versions <
1362                          * 19 during upgrades. This should be dropped
1363                          * one day */
1364
1365                         if ((p = set_remove(d->set, (char*) path)))
1366                                 free(p);
1367
1368                         if (!success)
1369                                 d->result = strdup("failed");
1370
1371                         goto finish;
1372                 }
1373 #endif
1374
1375                 log_error("Failed to parse message: %s", bus_error_message(&error));
1376         }
1377
1378 finish:
1379         dbus_error_free(&error);
1380         return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
1381 }
1382
1383 static int enable_wait_for_jobs(DBusConnection *bus) {
1384         DBusError error;
1385
1386         assert(bus);
1387
1388         if (private_bus)
1389                 return 0;
1390
1391         dbus_error_init(&error);
1392         dbus_bus_add_match(bus,
1393                            "type='signal',"
1394                            "sender='org.freedesktop.systemd1',"
1395                            "interface='org.freedesktop.systemd1.Manager',"
1396                            "member='JobRemoved',"
1397                            "path='/org/freedesktop/systemd1'",
1398                            &error);
1399
1400         if (dbus_error_is_set(&error)) {
1401                 log_error("Failed to add match: %s", bus_error_message(&error));
1402                 dbus_error_free(&error);
1403                 return -EIO;
1404         }
1405
1406         /* This is slightly dirty, since we don't undo the match registrations. */
1407         return 0;
1408 }
1409
1410 static int wait_for_jobs(DBusConnection *bus, Set *s) {
1411         int r;
1412         WaitData d;
1413
1414         assert(bus);
1415         assert(s);
1416
1417         zero(d);
1418         d.set = s;
1419
1420         if (!dbus_connection_add_filter(bus, wait_filter, &d, NULL)) {
1421                 log_error("Failed to add filter.");
1422                 r = -ENOMEM;
1423                 goto finish;
1424         }
1425
1426         while (!set_isempty(s) &&
1427                dbus_connection_read_write_dispatch(bus, -1))
1428                 ;
1429
1430         if (!arg_quiet && d.result) {
1431                 if (streq(d.result, "timeout"))
1432                         log_error("Job timed out.");
1433                 else if (streq(d.result, "canceled"))
1434                         log_error("Job canceled.");
1435                 else if (streq(d.result, "dependency"))
1436                         log_error("A dependency job failed. See system logs for details.");
1437                 else if (!streq(d.result, "done") && !streq(d.result, "skipped"))
1438                         log_error("Job failed. See system logs and 'systemctl status' for details.");
1439         }
1440
1441         if (streq_ptr(d.result, "timeout"))
1442                 r = -ETIME;
1443         else if (streq_ptr(d.result, "canceled"))
1444                 r = -ECANCELED;
1445         else if (!streq_ptr(d.result, "done") && !streq_ptr(d.result, "skipped"))
1446                 r = -EIO;
1447         else
1448                 r = 0;
1449
1450         free(d.result);
1451
1452 finish:
1453         /* This is slightly dirty, since we don't undo the filter registration. */
1454
1455         return r;
1456 }
1457
1458 static int start_unit_one(
1459                 DBusConnection *bus,
1460                 const char *method,
1461                 const char *name,
1462                 const char *mode,
1463                 DBusError *error,
1464                 Set *s) {
1465
1466         DBusMessage *m = NULL, *reply = NULL;
1467         const char *path;
1468         int r;
1469
1470         assert(bus);
1471         assert(method);
1472         assert(name);
1473         assert(mode);
1474         assert(error);
1475         assert(arg_no_block || s);
1476
1477         if (!(m = dbus_message_new_method_call(
1478                               "org.freedesktop.systemd1",
1479                               "/org/freedesktop/systemd1",
1480                               "org.freedesktop.systemd1.Manager",
1481                               method))) {
1482                 log_error("Could not allocate message.");
1483                 r = -ENOMEM;
1484                 goto finish;
1485         }
1486
1487         if (!dbus_message_append_args(m,
1488                                       DBUS_TYPE_STRING, &name,
1489                                       DBUS_TYPE_STRING, &mode,
1490                                       DBUS_TYPE_INVALID)) {
1491                 log_error("Could not append arguments to message.");
1492                 r = -ENOMEM;
1493                 goto finish;
1494         }
1495
1496         if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, error))) {
1497
1498                 if (arg_action != ACTION_SYSTEMCTL && error_is_no_service(error)) {
1499                         /* There's always a fallback possible for
1500                          * legacy actions. */
1501                         r = -EADDRNOTAVAIL;
1502                         goto finish;
1503                 }
1504
1505                 log_error("Failed to issue method call: %s", bus_error_message(error));
1506                 r = -EIO;
1507                 goto finish;
1508         }
1509
1510         if (!dbus_message_get_args(reply, error,
1511                                    DBUS_TYPE_OBJECT_PATH, &path,
1512                                    DBUS_TYPE_INVALID)) {
1513                 log_error("Failed to parse reply: %s", bus_error_message(error));
1514                 r = -EIO;
1515                 goto finish;
1516         }
1517
1518         if (need_daemon_reload(bus, name))
1519                 log_warning("Warning: Unit file of created job changed on disk, 'systemctl %s daemon-reload' recommended.",
1520                             arg_scope == UNIT_FILE_SYSTEM ? "--system" : "--user");
1521
1522         if (!arg_no_block) {
1523                 char *p;
1524
1525                 if (!(p = strdup(path))) {
1526                         log_error("Failed to duplicate path.");
1527                         r = -ENOMEM;
1528                         goto finish;
1529                 }
1530
1531                 if ((r = set_put(s, p)) < 0) {
1532                         free(p);
1533                         log_error("Failed to add path to set.");
1534                         goto finish;
1535                 }
1536         }
1537
1538         r = 0;
1539
1540 finish:
1541         if (m)
1542                 dbus_message_unref(m);
1543
1544         if (reply)
1545                 dbus_message_unref(reply);
1546
1547         return r;
1548 }
1549
1550 static enum action verb_to_action(const char *verb) {
1551         if (streq(verb, "halt"))
1552                 return ACTION_HALT;
1553         else if (streq(verb, "poweroff"))
1554                 return ACTION_POWEROFF;
1555         else if (streq(verb, "reboot"))
1556                 return ACTION_REBOOT;
1557         else if (streq(verb, "kexec"))
1558                 return ACTION_KEXEC;
1559         else if (streq(verb, "rescue"))
1560                 return ACTION_RESCUE;
1561         else if (streq(verb, "emergency"))
1562                 return ACTION_EMERGENCY;
1563         else if (streq(verb, "default"))
1564                 return ACTION_DEFAULT;
1565         else if (streq(verb, "exit"))
1566                 return ACTION_EXIT;
1567         else
1568                 return ACTION_INVALID;
1569 }
1570
1571 static int start_unit(DBusConnection *bus, char **args) {
1572
1573         static const char * const table[_ACTION_MAX] = {
1574                 [ACTION_HALT] = SPECIAL_HALT_TARGET,
1575                 [ACTION_POWEROFF] = SPECIAL_POWEROFF_TARGET,
1576                 [ACTION_REBOOT] = SPECIAL_REBOOT_TARGET,
1577                 [ACTION_KEXEC] = SPECIAL_KEXEC_TARGET,
1578                 [ACTION_RUNLEVEL2] = SPECIAL_RUNLEVEL2_TARGET,
1579                 [ACTION_RUNLEVEL3] = SPECIAL_RUNLEVEL3_TARGET,
1580                 [ACTION_RUNLEVEL4] = SPECIAL_RUNLEVEL4_TARGET,
1581                 [ACTION_RUNLEVEL5] = SPECIAL_RUNLEVEL5_TARGET,
1582                 [ACTION_RESCUE] = SPECIAL_RESCUE_TARGET,
1583                 [ACTION_EMERGENCY] = SPECIAL_EMERGENCY_TARGET,
1584                 [ACTION_DEFAULT] = SPECIAL_DEFAULT_TARGET,
1585                 [ACTION_EXIT] = SPECIAL_EXIT_TARGET
1586         };
1587
1588         int r, ret = 0;
1589         const char *method, *mode, *one_name;
1590         Set *s = NULL;
1591         DBusError error;
1592         char **name;
1593
1594         dbus_error_init(&error);
1595
1596         assert(bus);
1597
1598         agent_open_if_enabled();
1599
1600         if (arg_action == ACTION_SYSTEMCTL) {
1601                 method =
1602                         streq(args[0], "stop") ||
1603                         streq(args[0], "condstop")              ? "StopUnit" :
1604                         streq(args[0], "reload")                ? "ReloadUnit" :
1605                         streq(args[0], "restart")               ? "RestartUnit" :
1606
1607                         streq(args[0], "try-restart")           ||
1608                         streq(args[0], "condrestart")           ? "TryRestartUnit" :
1609
1610                         streq(args[0], "reload-or-restart")     ? "ReloadOrRestartUnit" :
1611
1612                         streq(args[0], "reload-or-try-restart") ||
1613                         streq(args[0], "condreload") ||
1614
1615                         streq(args[0], "force-reload")          ? "ReloadOrTryRestartUnit" :
1616                                                                   "StartUnit";
1617
1618                 mode =
1619                         (streq(args[0], "isolate") ||
1620                          streq(args[0], "rescue")  ||
1621                          streq(args[0], "emergency")) ? "isolate" : arg_job_mode;
1622
1623                 one_name = table[verb_to_action(args[0])];
1624
1625         } else {
1626                 assert(arg_action < ELEMENTSOF(table));
1627                 assert(table[arg_action]);
1628
1629                 method = "StartUnit";
1630
1631                 mode = (arg_action == ACTION_EMERGENCY ||
1632                         arg_action == ACTION_RESCUE ||
1633                         arg_action == ACTION_RUNLEVEL2 ||
1634                         arg_action == ACTION_RUNLEVEL3 ||
1635                         arg_action == ACTION_RUNLEVEL4 ||
1636                         arg_action == ACTION_RUNLEVEL5) ? "isolate" : "replace";
1637
1638                 one_name = table[arg_action];
1639         }
1640
1641         if (!arg_no_block) {
1642                 if ((ret = enable_wait_for_jobs(bus)) < 0) {
1643                         log_error("Could not watch jobs: %s", strerror(-ret));
1644                         goto finish;
1645                 }
1646
1647                 if (!(s = set_new(string_hash_func, string_compare_func))) {
1648                         log_error("Failed to allocate set.");
1649                         ret = -ENOMEM;
1650                         goto finish;
1651                 }
1652         }
1653
1654         if (one_name) {
1655                 if ((ret = start_unit_one(bus, method, one_name, mode, &error, s)) <= 0)
1656                         goto finish;
1657         } else {
1658                 STRV_FOREACH(name, args+1)
1659                         if ((r = start_unit_one(bus, method, *name, mode, &error, s)) != 0) {
1660                                 ret = translate_bus_error_to_exit_status(r, &error);
1661                                 dbus_error_free(&error);
1662                         }
1663         }
1664
1665         if (!arg_no_block)
1666                 if ((r = wait_for_jobs(bus, s)) < 0) {
1667                         ret = r;
1668                         goto finish;
1669                 }
1670
1671 finish:
1672         if (s)
1673                 set_free_free(s);
1674
1675         dbus_error_free(&error);
1676
1677         return ret;
1678 }
1679
1680 static int start_special(DBusConnection *bus, char **args) {
1681         int r;
1682
1683         assert(bus);
1684         assert(args);
1685
1686         if (arg_force &&
1687             (streq(args[0], "halt") ||
1688              streq(args[0], "poweroff") ||
1689              streq(args[0], "reboot") ||
1690              streq(args[0], "kexec") ||
1691              streq(args[0], "exit")))
1692                 return daemon_reload(bus, args);
1693
1694         r = start_unit(bus, args);
1695
1696         if (r >= 0)
1697                 warn_wall(verb_to_action(args[0]));
1698
1699         return r;
1700 }
1701
1702 static int check_unit(DBusConnection *bus, char **args) {
1703         DBusMessage *m = NULL, *reply = NULL;
1704         const char
1705                 *interface = "org.freedesktop.systemd1.Unit",
1706                 *property = "ActiveState";
1707         int r = 3; /* According to LSB: "program is not running" */
1708         DBusError error;
1709         char **name;
1710
1711         assert(bus);
1712         assert(args);
1713
1714         dbus_error_init(&error);
1715
1716         STRV_FOREACH(name, args+1) {
1717                 const char *path = NULL;
1718                 const char *state;
1719                 DBusMessageIter iter, sub;
1720
1721                 if (!(m = dbus_message_new_method_call(
1722                                       "org.freedesktop.systemd1",
1723                                       "/org/freedesktop/systemd1",
1724                                       "org.freedesktop.systemd1.Manager",
1725                                       "GetUnit"))) {
1726                         log_error("Could not allocate message.");
1727                         r = -ENOMEM;
1728                         goto finish;
1729                 }
1730
1731                 if (!dbus_message_append_args(m,
1732                                               DBUS_TYPE_STRING, name,
1733                                               DBUS_TYPE_INVALID)) {
1734                         log_error("Could not append arguments to message.");
1735                         r = -ENOMEM;
1736                         goto finish;
1737                 }
1738
1739                 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1740
1741                         /* Hmm, cannot figure out anything about this unit... */
1742                         if (!arg_quiet)
1743                                 puts("unknown");
1744
1745                         dbus_error_free(&error);
1746                         dbus_message_unref(m);
1747                         m = NULL;
1748                         continue;
1749                 }
1750
1751                 if (!dbus_message_get_args(reply, &error,
1752                                            DBUS_TYPE_OBJECT_PATH, &path,
1753                                            DBUS_TYPE_INVALID)) {
1754                         log_error("Failed to parse reply: %s", bus_error_message(&error));
1755                         r = -EIO;
1756                         goto finish;
1757                 }
1758
1759                 dbus_message_unref(m);
1760                 if (!(m = dbus_message_new_method_call(
1761                                       "org.freedesktop.systemd1",
1762                                       path,
1763                                       "org.freedesktop.DBus.Properties",
1764                                       "Get"))) {
1765                         log_error("Could not allocate message.");
1766                         r = -ENOMEM;
1767                         goto finish;
1768                 }
1769
1770                 if (!dbus_message_append_args(m,
1771                                               DBUS_TYPE_STRING, &interface,
1772                                               DBUS_TYPE_STRING, &property,
1773                                               DBUS_TYPE_INVALID)) {
1774                         log_error("Could not append arguments to message.");
1775                         r = -ENOMEM;
1776                         goto finish;
1777                 }
1778
1779                 dbus_message_unref(reply);
1780                 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1781                         log_error("Failed to issue method call: %s", bus_error_message(&error));
1782                         r = -EIO;
1783                         goto finish;
1784                 }
1785
1786                 if (!dbus_message_iter_init(reply, &iter) ||
1787                     dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT)  {
1788                         log_error("Failed to parse reply.");
1789                         r = -EIO;
1790                         goto finish;
1791                 }
1792
1793                 dbus_message_iter_recurse(&iter, &sub);
1794
1795                 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING)  {
1796                         log_error("Failed to parse reply.");
1797                         r = -EIO;
1798                         goto finish;
1799                 }
1800
1801                 dbus_message_iter_get_basic(&sub, &state);
1802
1803                 if (!arg_quiet)
1804                         puts(state);
1805
1806                 if (streq(state, "active") || streq(state, "reloading"))
1807                         r = 0;
1808
1809                 dbus_message_unref(m);
1810                 dbus_message_unref(reply);
1811                 m = reply = NULL;
1812         }
1813
1814 finish:
1815         if (m)
1816                 dbus_message_unref(m);
1817
1818         if (reply)
1819                 dbus_message_unref(reply);
1820
1821         dbus_error_free(&error);
1822
1823         return r;
1824 }
1825
1826 static int kill_unit(DBusConnection *bus, char **args) {
1827         DBusMessage *m = NULL;
1828         int r = 0;
1829         DBusError error;
1830         char **name;
1831
1832         assert(bus);
1833         assert(args);
1834
1835         dbus_error_init(&error);
1836
1837         if (!arg_kill_who)
1838                 arg_kill_who = "all";
1839
1840         if (!arg_kill_mode)
1841                 arg_kill_mode = streq(arg_kill_who, "all") ? "control-group" : "process";
1842
1843         STRV_FOREACH(name, args+1) {
1844                 DBusMessage *reply;
1845
1846                 if (!(m = dbus_message_new_method_call(
1847                                       "org.freedesktop.systemd1",
1848                                       "/org/freedesktop/systemd1",
1849                                       "org.freedesktop.systemd1.Manager",
1850                                       "KillUnit"))) {
1851                         log_error("Could not allocate message.");
1852                         r = -ENOMEM;
1853                         goto finish;
1854                 }
1855
1856                 if (!dbus_message_append_args(m,
1857                                               DBUS_TYPE_STRING, name,
1858                                               DBUS_TYPE_STRING, &arg_kill_who,
1859                                               DBUS_TYPE_STRING, &arg_kill_mode,
1860                                               DBUS_TYPE_INT32, &arg_signal,
1861                                               DBUS_TYPE_INVALID)) {
1862                         log_error("Could not append arguments to message.");
1863                         r = -ENOMEM;
1864                         goto finish;
1865                 }
1866
1867                 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
1868                         log_error("Failed to issue method call: %s", bus_error_message(&error));
1869                         dbus_error_free(&error);
1870                         r = -EIO;
1871                 }
1872
1873                 dbus_message_unref(m);
1874
1875                 if (reply)
1876                         dbus_message_unref(reply);
1877                 m = reply = NULL;
1878         }
1879
1880 finish:
1881         if (m)
1882                 dbus_message_unref(m);
1883
1884         dbus_error_free(&error);
1885
1886         return r;
1887 }
1888
1889 typedef struct ExecStatusInfo {
1890         char *name;
1891
1892         char *path;
1893         char **argv;
1894
1895         bool ignore;
1896
1897         usec_t start_timestamp;
1898         usec_t exit_timestamp;
1899         pid_t pid;
1900         int code;
1901         int status;
1902
1903         LIST_FIELDS(struct ExecStatusInfo, exec);
1904 } ExecStatusInfo;
1905
1906 static void exec_status_info_free(ExecStatusInfo *i) {
1907         assert(i);
1908
1909         free(i->name);
1910         free(i->path);
1911         strv_free(i->argv);
1912         free(i);
1913 }
1914
1915 static int exec_status_info_deserialize(DBusMessageIter *sub, ExecStatusInfo *i) {
1916         uint64_t start_timestamp, exit_timestamp, start_timestamp_monotonic, exit_timestamp_monotonic;
1917         DBusMessageIter sub2, sub3;
1918         const char*path;
1919         unsigned n;
1920         uint32_t pid;
1921         int32_t code, status;
1922         dbus_bool_t ignore;
1923
1924         assert(i);
1925         assert(i);
1926
1927         if (dbus_message_iter_get_arg_type(sub) != DBUS_TYPE_STRUCT)
1928                 return -EIO;
1929
1930         dbus_message_iter_recurse(sub, &sub2);
1931
1932         if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, true) < 0)
1933                 return -EIO;
1934
1935         if (!(i->path = strdup(path)))
1936                 return -ENOMEM;
1937
1938         if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_ARRAY ||
1939             dbus_message_iter_get_element_type(&sub2) != DBUS_TYPE_STRING)
1940                 return -EIO;
1941
1942         n = 0;
1943         dbus_message_iter_recurse(&sub2, &sub3);
1944         while (dbus_message_iter_get_arg_type(&sub3) != DBUS_TYPE_INVALID) {
1945                 assert(dbus_message_iter_get_arg_type(&sub3) == DBUS_TYPE_STRING);
1946                 dbus_message_iter_next(&sub3);
1947                 n++;
1948         }
1949
1950
1951         if (!(i->argv = new0(char*, n+1)))
1952                 return -ENOMEM;
1953
1954         n = 0;
1955         dbus_message_iter_recurse(&sub2, &sub3);
1956         while (dbus_message_iter_get_arg_type(&sub3) != DBUS_TYPE_INVALID) {
1957                 const char *s;
1958
1959                 assert(dbus_message_iter_get_arg_type(&sub3) == DBUS_TYPE_STRING);
1960                 dbus_message_iter_get_basic(&sub3, &s);
1961                 dbus_message_iter_next(&sub3);
1962
1963                 if (!(i->argv[n++] = strdup(s)))
1964                         return -ENOMEM;
1965         }
1966
1967         if (!dbus_message_iter_next(&sub2) ||
1968             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_BOOLEAN, &ignore, true) < 0 ||
1969             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &start_timestamp, true) < 0 ||
1970             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &start_timestamp_monotonic, true) < 0 ||
1971             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &exit_timestamp, true) < 0 ||
1972             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &exit_timestamp_monotonic, true) < 0 ||
1973             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT32, &pid, true) < 0 ||
1974             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_INT32, &code, true) < 0 ||
1975             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_INT32, &status, false) < 0)
1976                 return -EIO;
1977
1978         i->ignore = ignore;
1979         i->start_timestamp = (usec_t) start_timestamp;
1980         i->exit_timestamp = (usec_t) exit_timestamp;
1981         i->pid = (pid_t) pid;
1982         i->code = code;
1983         i->status = status;
1984
1985         return 0;
1986 }
1987
1988 typedef struct UnitStatusInfo {
1989         const char *id;
1990         const char *load_state;
1991         const char *active_state;
1992         const char *sub_state;
1993         const char *unit_file_state;
1994
1995         const char *description;
1996         const char *following;
1997
1998         const char *path;
1999         const char *default_control_group;
2000
2001         const char *load_error;
2002
2003         usec_t inactive_exit_timestamp;
2004         usec_t active_enter_timestamp;
2005         usec_t active_exit_timestamp;
2006         usec_t inactive_enter_timestamp;
2007
2008         bool need_daemon_reload;
2009
2010         /* Service */
2011         pid_t main_pid;
2012         pid_t control_pid;
2013         const char *status_text;
2014         bool running:1;
2015 #ifdef HAVE_SYSV_COMPAT
2016         bool is_sysv:1;
2017 #endif
2018
2019         usec_t start_timestamp;
2020         usec_t exit_timestamp;
2021
2022         int exit_code, exit_status;
2023
2024         usec_t condition_timestamp;
2025         bool condition_result;
2026
2027         /* Socket */
2028         unsigned n_accepted;
2029         unsigned n_connections;
2030         bool accept;
2031
2032         /* Device */
2033         const char *sysfs_path;
2034
2035         /* Mount, Automount */
2036         const char *where;
2037
2038         /* Swap */
2039         const char *what;
2040
2041         LIST_HEAD(ExecStatusInfo, exec);
2042 } UnitStatusInfo;
2043
2044 static void print_status_info(UnitStatusInfo *i) {
2045         ExecStatusInfo *p;
2046         const char *on, *off, *ss;
2047         usec_t timestamp;
2048         char since1[FORMAT_TIMESTAMP_PRETTY_MAX], *s1;
2049         char since2[FORMAT_TIMESTAMP_MAX], *s2;
2050
2051         assert(i);
2052
2053         /* This shows pretty information about a unit. See
2054          * print_property() for a low-level property printer */
2055
2056         printf("%s", strna(i->id));
2057
2058         if (i->description && !streq_ptr(i->id, i->description))
2059                 printf(" - %s", i->description);
2060
2061         printf("\n");
2062
2063         if (i->following)
2064                 printf("\t  Follow: unit currently follows state of %s\n", i->following);
2065
2066         if (streq_ptr(i->load_state, "error")) {
2067                 on = ansi_highlight(true);
2068                 off = ansi_highlight(false);
2069         } else
2070                 on = off = "";
2071
2072         if (i->load_error)
2073                 printf("\t  Loaded: %s%s%s (Reason: %s)\n", on, strna(i->load_state), off, i->load_error);
2074         else if (i->path && i->unit_file_state)
2075                 printf("\t  Loaded: %s%s%s (%s; %s)\n", on, strna(i->load_state), off, i->path, i->unit_file_state);
2076         else if (i->path)
2077                 printf("\t  Loaded: %s%s%s (%s)\n", on, strna(i->load_state), off, i->path);
2078         else
2079                 printf("\t  Loaded: %s%s%s\n", on, strna(i->load_state), off);
2080
2081         ss = streq_ptr(i->active_state, i->sub_state) ? NULL : i->sub_state;
2082
2083         if (streq_ptr(i->active_state, "failed")) {
2084                 on = ansi_highlight(true);
2085                 off = ansi_highlight(false);
2086         } else if (streq_ptr(i->active_state, "active") || streq_ptr(i->active_state, "reloading")) {
2087                 on = ansi_highlight_green(true);
2088                 off = ansi_highlight_green(false);
2089         } else
2090                 on = off = "";
2091
2092         if (ss)
2093                 printf("\t  Active: %s%s (%s)%s",
2094                        on,
2095                        strna(i->active_state),
2096                        ss,
2097                        off);
2098         else
2099                 printf("\t  Active: %s%s%s",
2100                        on,
2101                        strna(i->active_state),
2102                        off);
2103
2104         timestamp = (streq_ptr(i->active_state, "active")      ||
2105                      streq_ptr(i->active_state, "reloading"))   ? i->active_enter_timestamp :
2106                     (streq_ptr(i->active_state, "inactive")    ||
2107                      streq_ptr(i->active_state, "failed"))      ? i->inactive_enter_timestamp :
2108                     streq_ptr(i->active_state, "activating")    ? i->inactive_exit_timestamp :
2109                                                                   i->active_exit_timestamp;
2110
2111         s1 = format_timestamp_pretty(since1, sizeof(since1), timestamp);
2112         s2 = format_timestamp(since2, sizeof(since2), timestamp);
2113
2114         if (s1)
2115                 printf(" since %s; %s\n", s2, s1);
2116         else if (s2)
2117                 printf(" since %s\n", s2);
2118         else
2119                 printf("\n");
2120
2121         if (!i->condition_result && i->condition_timestamp > 0) {
2122                 s1 = format_timestamp_pretty(since1, sizeof(since1), i->condition_timestamp);
2123                 s2 = format_timestamp(since2, sizeof(since2), i->condition_timestamp);
2124
2125                 if (s1)
2126                         printf("\t          start condition failed at %s; %s\n", s2, s1);
2127                 else if (s2)
2128                         printf("\t          start condition failed at %s\n", s2);
2129         }
2130
2131         if (i->sysfs_path)
2132                 printf("\t  Device: %s\n", i->sysfs_path);
2133         if (i->where)
2134                 printf("\t   Where: %s\n", i->where);
2135         if (i->what)
2136                 printf("\t    What: %s\n", i->what);
2137
2138         if (i->accept)
2139                 printf("\tAccepted: %u; Connected: %u\n", i->n_accepted, i->n_connections);
2140
2141         LIST_FOREACH(exec, p, i->exec) {
2142                 char *t;
2143                 bool good;
2144
2145                 /* Only show exited processes here */
2146                 if (p->code == 0)
2147                         continue;
2148
2149                 t = strv_join(p->argv, " ");
2150                 printf("\t Process: %u %s=%s ", p->pid, p->name, strna(t));
2151                 free(t);
2152
2153 #ifdef HAVE_SYSV_COMPAT
2154                 if (i->is_sysv)
2155                         good = is_clean_exit_lsb(p->code, p->status);
2156                 else
2157 #endif
2158                         good = is_clean_exit(p->code, p->status);
2159
2160                 if (!good) {
2161                         on = ansi_highlight(true);
2162                         off = ansi_highlight(false);
2163                 } else
2164                         on = off = "";
2165
2166                 printf("%s(code=%s, ", on, sigchld_code_to_string(p->code));
2167
2168                 if (p->code == CLD_EXITED) {
2169                         const char *c;
2170
2171                         printf("status=%i", p->status);
2172
2173 #ifdef HAVE_SYSV_COMPAT
2174                         if ((c = exit_status_to_string(p->status, i->is_sysv ? EXIT_STATUS_LSB : EXIT_STATUS_SYSTEMD)))
2175 #else
2176                         if ((c = exit_status_to_string(p->status, EXIT_STATUS_SYSTEMD)))
2177 #endif
2178                                 printf("/%s", c);
2179
2180                 } else
2181                         printf("signal=%s", signal_to_string(p->status));
2182
2183                 printf(")%s\n", off);
2184
2185                 if (i->main_pid == p->pid &&
2186                     i->start_timestamp == p->start_timestamp &&
2187                     i->exit_timestamp == p->start_timestamp)
2188                         /* Let's not show this twice */
2189                         i->main_pid = 0;
2190
2191                 if (p->pid == i->control_pid)
2192                         i->control_pid = 0;
2193         }
2194
2195         if (i->main_pid > 0 || i->control_pid > 0) {
2196                 printf("\t");
2197
2198                 if (i->main_pid > 0) {
2199                         printf("Main PID: %u", (unsigned) i->main_pid);
2200
2201                         if (i->running) {
2202                                 char *t = NULL;
2203                                 get_process_comm(i->main_pid, &t);
2204                                 if (t) {
2205                                         printf(" (%s)", t);
2206                                         free(t);
2207                                 }
2208                         } else if (i->exit_code > 0) {
2209                                 printf(" (code=%s, ", sigchld_code_to_string(i->exit_code));
2210
2211                                 if (i->exit_code == CLD_EXITED) {
2212                                         const char *c;
2213
2214                                         printf("status=%i", i->exit_status);
2215
2216 #ifdef HAVE_SYSV_COMPAT
2217                                         if ((c = exit_status_to_string(i->exit_status, i->is_sysv ? EXIT_STATUS_LSB : EXIT_STATUS_SYSTEMD)))
2218 #else
2219                                         if ((c = exit_status_to_string(i->exit_status, EXIT_STATUS_SYSTEMD)))
2220 #endif
2221                                                 printf("/%s", c);
2222
2223                                 } else
2224                                         printf("signal=%s", signal_to_string(i->exit_status));
2225                                 printf(")");
2226                         }
2227                 }
2228
2229                 if (i->main_pid > 0 && i->control_pid > 0)
2230                         printf(";");
2231
2232                 if (i->control_pid > 0) {
2233                         char *t = NULL;
2234
2235                         printf(" Control: %u", (unsigned) i->control_pid);
2236
2237                         get_process_comm(i->control_pid, &t);
2238                         if (t) {
2239                                 printf(" (%s)", t);
2240                                 free(t);
2241                         }
2242                 }
2243
2244                 printf("\n");
2245         }
2246
2247         if (i->status_text)
2248                 printf("\t  Status: \"%s\"\n", i->status_text);
2249
2250         if (i->default_control_group) {
2251                 unsigned c;
2252
2253                 printf("\t  CGroup: %s\n", i->default_control_group);
2254
2255                 if (arg_transport != TRANSPORT_SSH) {
2256                         if ((c = columns()) > 18)
2257                                 c -= 18;
2258                         else
2259                                 c = 0;
2260
2261                         show_cgroup_by_path(i->default_control_group, "\t\t  ", c);
2262                 }
2263         }
2264
2265         if (i->id && arg_transport != TRANSPORT_SSH) {
2266                 printf("\n");
2267                 show_journal_by_service(i->id, OUTPUT_SHORT, NULL, 0, 0, 0, arg_all);
2268         }
2269
2270         if (i->need_daemon_reload)
2271                 printf("\n%sWarning:%s Unit file changed on disk, 'systemctl %s daemon-reload' recommended.\n",
2272                        ansi_highlight(true),
2273                        ansi_highlight(false),
2274                        arg_scope == UNIT_FILE_SYSTEM ? "--system" : "--user");
2275 }
2276
2277 static int status_property(const char *name, DBusMessageIter *iter, UnitStatusInfo *i) {
2278
2279         assert(name);
2280         assert(iter);
2281         assert(i);
2282
2283         switch (dbus_message_iter_get_arg_type(iter)) {
2284
2285         case DBUS_TYPE_STRING: {
2286                 const char *s;
2287
2288                 dbus_message_iter_get_basic(iter, &s);
2289
2290                 if (!isempty(s)) {
2291                         if (streq(name, "Id"))
2292                                 i->id = s;
2293                         else if (streq(name, "LoadState"))
2294                                 i->load_state = s;
2295                         else if (streq(name, "ActiveState"))
2296                                 i->active_state = s;
2297                         else if (streq(name, "SubState"))
2298                                 i->sub_state = s;
2299                         else if (streq(name, "Description"))
2300                                 i->description = s;
2301                         else if (streq(name, "FragmentPath"))
2302                                 i->path = s;
2303 #ifdef HAVE_SYSV_COMPAT
2304                         else if (streq(name, "SysVPath")) {
2305                                 i->is_sysv = true;
2306                                 i->path = s;
2307                         }
2308 #endif
2309                         else if (streq(name, "DefaultControlGroup"))
2310                                 i->default_control_group = s;
2311                         else if (streq(name, "StatusText"))
2312                                 i->status_text = s;
2313                         else if (streq(name, "SysFSPath"))
2314                                 i->sysfs_path = s;
2315                         else if (streq(name, "Where"))
2316                                 i->where = s;
2317                         else if (streq(name, "What"))
2318                                 i->what = s;
2319                         else if (streq(name, "Following"))
2320                                 i->following = s;
2321                         else if (streq(name, "UnitFileState"))
2322                                 i->unit_file_state = s;
2323                 }
2324
2325                 break;
2326         }
2327
2328         case DBUS_TYPE_BOOLEAN: {
2329                 dbus_bool_t b;
2330
2331                 dbus_message_iter_get_basic(iter, &b);
2332
2333                 if (streq(name, "Accept"))
2334                         i->accept = b;
2335                 else if (streq(name, "NeedDaemonReload"))
2336                         i->need_daemon_reload = b;
2337                 else if (streq(name, "ConditionResult"))
2338                         i->condition_result = b;
2339
2340                 break;
2341         }
2342
2343         case DBUS_TYPE_UINT32: {
2344                 uint32_t u;
2345
2346                 dbus_message_iter_get_basic(iter, &u);
2347
2348                 if (streq(name, "MainPID")) {
2349                         if (u > 0) {
2350                                 i->main_pid = (pid_t) u;
2351                                 i->running = true;
2352                         }
2353                 } else if (streq(name, "ControlPID"))
2354                         i->control_pid = (pid_t) u;
2355                 else if (streq(name, "ExecMainPID")) {
2356                         if (u > 0)
2357                                 i->main_pid = (pid_t) u;
2358                 } else if (streq(name, "NAccepted"))
2359                         i->n_accepted = u;
2360                 else if (streq(name, "NConnections"))
2361                         i->n_connections = u;
2362
2363                 break;
2364         }
2365
2366         case DBUS_TYPE_INT32: {
2367                 int32_t j;
2368
2369                 dbus_message_iter_get_basic(iter, &j);
2370
2371                 if (streq(name, "ExecMainCode"))
2372                         i->exit_code = (int) j;
2373                 else if (streq(name, "ExecMainStatus"))
2374                         i->exit_status = (int) j;
2375
2376                 break;
2377         }
2378
2379         case DBUS_TYPE_UINT64: {
2380                 uint64_t u;
2381
2382                 dbus_message_iter_get_basic(iter, &u);
2383
2384                 if (streq(name, "ExecMainStartTimestamp"))
2385                         i->start_timestamp = (usec_t) u;
2386                 else if (streq(name, "ExecMainExitTimestamp"))
2387                         i->exit_timestamp = (usec_t) u;
2388                 else if (streq(name, "ActiveEnterTimestamp"))
2389                         i->active_enter_timestamp = (usec_t) u;
2390                 else if (streq(name, "InactiveEnterTimestamp"))
2391                         i->inactive_enter_timestamp = (usec_t) u;
2392                 else if (streq(name, "InactiveExitTimestamp"))
2393                         i->inactive_exit_timestamp = (usec_t) u;
2394                 else if (streq(name, "ActiveExitTimestamp"))
2395                         i->active_exit_timestamp = (usec_t) u;
2396                 else if (streq(name, "ConditionTimestamp"))
2397                         i->condition_timestamp = (usec_t) u;
2398
2399                 break;
2400         }
2401
2402         case DBUS_TYPE_ARRAY: {
2403
2404                 if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT &&
2405                     startswith(name, "Exec")) {
2406                         DBusMessageIter sub;
2407
2408                         dbus_message_iter_recurse(iter, &sub);
2409                         while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2410                                 ExecStatusInfo *info;
2411                                 int r;
2412
2413                                 if (!(info = new0(ExecStatusInfo, 1)))
2414                                         return -ENOMEM;
2415
2416                                 if (!(info->name = strdup(name))) {
2417                                         free(info);
2418                                         return -ENOMEM;
2419                                 }
2420
2421                                 if ((r = exec_status_info_deserialize(&sub, info)) < 0) {
2422                                         free(info);
2423                                         return r;
2424                                 }
2425
2426                                 LIST_PREPEND(ExecStatusInfo, exec, i->exec, info);
2427
2428                                 dbus_message_iter_next(&sub);
2429                         }
2430                 }
2431
2432                 break;
2433         }
2434
2435         case DBUS_TYPE_STRUCT: {
2436
2437                 if (streq(name, "LoadError")) {
2438                         DBusMessageIter sub;
2439                         const char *n, *message;
2440                         int r;
2441
2442                         dbus_message_iter_recurse(iter, &sub);
2443
2444                         r = bus_iter_get_basic_and_next(&sub, DBUS_TYPE_STRING, &n, true);
2445                         if (r < 0)
2446                                 return r;
2447
2448                         r = bus_iter_get_basic_and_next(&sub, DBUS_TYPE_STRING, &message, false);
2449                         if (r < 0)
2450                                 return r;
2451
2452                         if (!isempty(message))
2453                                 i->load_error = message;
2454                 }
2455
2456                 break;
2457         }
2458         }
2459
2460         return 0;
2461 }
2462
2463 static int print_property(const char *name, DBusMessageIter *iter) {
2464         assert(name);
2465         assert(iter);
2466
2467         /* This is a low-level property printer, see
2468          * print_status_info() for the nicer output */
2469
2470         if (arg_property && !strv_find(arg_property, name))
2471                 return 0;
2472
2473         switch (dbus_message_iter_get_arg_type(iter)) {
2474
2475         case DBUS_TYPE_STRUCT: {
2476                 DBusMessageIter sub;
2477                 dbus_message_iter_recurse(iter, &sub);
2478
2479                 if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_UINT32 && streq(name, "Job")) {
2480                         uint32_t u;
2481
2482                         dbus_message_iter_get_basic(&sub, &u);
2483
2484                         if (u)
2485                                 printf("%s=%u\n", name, (unsigned) u);
2486                         else if (arg_all)
2487                                 printf("%s=\n", name);
2488
2489                         return 0;
2490                 } else if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING && streq(name, "Unit")) {
2491                         const char *s;
2492
2493                         dbus_message_iter_get_basic(&sub, &s);
2494
2495                         if (arg_all || s[0])
2496                                 printf("%s=%s\n", name, s);
2497
2498                         return 0;
2499                 } else if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING && streq(name, "LoadError")) {
2500                         const char *a = NULL, *b = NULL;
2501
2502                         if (bus_iter_get_basic_and_next(&sub, DBUS_TYPE_STRING, &a, true) >= 0)
2503                                 bus_iter_get_basic_and_next(&sub, DBUS_TYPE_STRING, &b, false);
2504
2505                         if (arg_all || !isempty(a) || !isempty(b))
2506                                 printf("%s=%s \"%s\"\n", name, strempty(a), strempty(b));
2507
2508                         return 0;
2509                 }
2510
2511                 break;
2512         }
2513
2514         case DBUS_TYPE_ARRAY:
2515
2516                 if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "EnvironmentFiles")) {
2517                         DBusMessageIter sub, sub2;
2518
2519                         dbus_message_iter_recurse(iter, &sub);
2520                         while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2521                                 const char *path;
2522                                 dbus_bool_t ignore;
2523
2524                                 dbus_message_iter_recurse(&sub, &sub2);
2525
2526                                 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, true) >= 0 &&
2527                                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_BOOLEAN, &ignore, false) >= 0)
2528                                         printf("EnvironmentFile=%s (ignore_errors=%s)\n", path, yes_no(ignore));
2529
2530                                 dbus_message_iter_next(&sub);
2531                         }
2532
2533                         return 0;
2534
2535                 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Paths")) {
2536                         DBusMessageIter sub, sub2;
2537
2538                         dbus_message_iter_recurse(iter, &sub);
2539                         while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2540                                 const char *type, *path;
2541
2542                                 dbus_message_iter_recurse(&sub, &sub2);
2543
2544                                 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) >= 0 &&
2545                                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, false) >= 0)
2546                                         printf("%s=%s\n", type, path);
2547
2548                                 dbus_message_iter_next(&sub);
2549                         }
2550
2551                         return 0;
2552
2553                 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Timers")) {
2554                         DBusMessageIter sub, sub2;
2555
2556                         dbus_message_iter_recurse(iter, &sub);
2557                         while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2558                                 const char *base;
2559                                 uint64_t value, next_elapse;
2560
2561                                 dbus_message_iter_recurse(&sub, &sub2);
2562
2563                                 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &base, true) >= 0 &&
2564                                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &value, true) >= 0 &&
2565                                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &next_elapse, false) >= 0) {
2566                                         char timespan1[FORMAT_TIMESPAN_MAX], timespan2[FORMAT_TIMESPAN_MAX];
2567
2568                                         printf("%s={ value=%s ; next_elapse=%s }\n",
2569                                                base,
2570                                                format_timespan(timespan1, sizeof(timespan1), value),
2571                                                format_timespan(timespan2, sizeof(timespan2), next_elapse));
2572                                 }
2573
2574                                 dbus_message_iter_next(&sub);
2575                         }
2576
2577                         return 0;
2578
2579                 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "ControlGroupAttributes")) {
2580                         DBusMessageIter sub, sub2;
2581
2582                         dbus_message_iter_recurse(iter, &sub);
2583                         while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2584                                 const char *controller, *attr, *value;
2585
2586                                 dbus_message_iter_recurse(&sub, &sub2);
2587
2588                                 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &controller, true) >= 0 &&
2589                                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &attr, true) >= 0 &&
2590                                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &value, false) >= 0) {
2591
2592                                         printf("ControlGroupAttribute={ controller=%s ; attribute=%s ; value=\"%s\" }\n",
2593                                                controller,
2594                                                attr,
2595                                                value);
2596                                 }
2597
2598                                 dbus_message_iter_next(&sub);
2599                         }
2600
2601                         return 0;
2602
2603                 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && startswith(name, "Exec")) {
2604                         DBusMessageIter sub;
2605
2606                         dbus_message_iter_recurse(iter, &sub);
2607                         while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2608                                 ExecStatusInfo info;
2609
2610                                 zero(info);
2611                                 if (exec_status_info_deserialize(&sub, &info) >= 0) {
2612                                         char timestamp1[FORMAT_TIMESTAMP_MAX], timestamp2[FORMAT_TIMESTAMP_MAX];
2613                                         char *t;
2614
2615                                         t = strv_join(info.argv, " ");
2616
2617                                         printf("%s={ path=%s ; argv[]=%s ; ignore_errors=%s ; start_time=[%s] ; stop_time=[%s] ; pid=%u ; code=%s ; status=%i%s%s }\n",
2618                                                name,
2619                                                strna(info.path),
2620                                                strna(t),
2621                                                yes_no(info.ignore),
2622                                                strna(format_timestamp(timestamp1, sizeof(timestamp1), info.start_timestamp)),
2623                                                strna(format_timestamp(timestamp2, sizeof(timestamp2), info.exit_timestamp)),
2624                                                (unsigned) info. pid,
2625                                                sigchld_code_to_string(info.code),
2626                                                info.status,
2627                                                info.code == CLD_EXITED ? "" : "/",
2628                                                strempty(info.code == CLD_EXITED ? NULL : signal_to_string(info.status)));
2629
2630                                         free(t);
2631                                 }
2632
2633                                 free(info.path);
2634                                 strv_free(info.argv);
2635
2636                                 dbus_message_iter_next(&sub);
2637                         }
2638
2639                         return 0;
2640                 }
2641
2642                 break;
2643         }
2644
2645         if (generic_print_property(name, iter, arg_all) > 0)
2646                 return 0;
2647
2648         if (arg_all)
2649                 printf("%s=[unprintable]\n", name);
2650
2651         return 0;
2652 }
2653
2654 static int show_one(const char *verb, DBusConnection *bus, const char *path, bool show_properties, bool *new_line) {
2655         DBusMessage *m = NULL, *reply = NULL;
2656         const char *interface = "";
2657         int r;
2658         DBusError error;
2659         DBusMessageIter iter, sub, sub2, sub3;
2660         UnitStatusInfo info;
2661         ExecStatusInfo *p;
2662
2663         assert(bus);
2664         assert(path);
2665         assert(new_line);
2666
2667         zero(info);
2668         dbus_error_init(&error);
2669
2670         if (!(m = dbus_message_new_method_call(
2671                               "org.freedesktop.systemd1",
2672                               path,
2673                               "org.freedesktop.DBus.Properties",
2674                               "GetAll"))) {
2675                 log_error("Could not allocate message.");
2676                 r = -ENOMEM;
2677                 goto finish;
2678         }
2679
2680         if (!dbus_message_append_args(m,
2681                                       DBUS_TYPE_STRING, &interface,
2682                                       DBUS_TYPE_INVALID)) {
2683                 log_error("Could not append arguments to message.");
2684                 r = -ENOMEM;
2685                 goto finish;
2686         }
2687
2688         if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2689                 log_error("Failed to issue method call: %s", bus_error_message(&error));
2690                 r = -EIO;
2691                 goto finish;
2692         }
2693
2694         if (!dbus_message_iter_init(reply, &iter) ||
2695             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
2696             dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_DICT_ENTRY)  {
2697                 log_error("Failed to parse reply.");
2698                 r = -EIO;
2699                 goto finish;
2700         }
2701
2702         dbus_message_iter_recurse(&iter, &sub);
2703
2704         if (*new_line)
2705                 printf("\n");
2706
2707         *new_line = true;
2708
2709         while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
2710                 const char *name;
2711
2712                 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_DICT_ENTRY) {
2713                         log_error("Failed to parse reply.");
2714                         r = -EIO;
2715                         goto finish;
2716                 }
2717
2718                 dbus_message_iter_recurse(&sub, &sub2);
2719
2720                 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0) {
2721                         log_error("Failed to parse reply.");
2722                         r = -EIO;
2723                         goto finish;
2724                 }
2725
2726                 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT)  {
2727                         log_error("Failed to parse reply.");
2728                         r = -EIO;
2729                         goto finish;
2730                 }
2731
2732                 dbus_message_iter_recurse(&sub2, &sub3);
2733
2734                 if (show_properties)
2735                         r = print_property(name, &sub3);
2736                 else
2737                         r = status_property(name, &sub3, &info);
2738
2739                 if (r < 0) {
2740                         log_error("Failed to parse reply.");
2741                         r = -EIO;
2742                         goto finish;
2743                 }
2744
2745                 dbus_message_iter_next(&sub);
2746         }
2747
2748         r = 0;
2749
2750         if (!show_properties)
2751                 print_status_info(&info);
2752
2753         if (!streq_ptr(info.active_state, "active") &&
2754             !streq_ptr(info.active_state, "reloading") &&
2755             streq(verb, "status"))
2756                 /* According to LSB: "program not running" */
2757                 r = 3;
2758
2759         while ((p = info.exec)) {
2760                 LIST_REMOVE(ExecStatusInfo, exec, info.exec, p);
2761                 exec_status_info_free(p);
2762         }
2763
2764 finish:
2765         if (m)
2766                 dbus_message_unref(m);
2767
2768         if (reply)
2769                 dbus_message_unref(reply);
2770
2771         dbus_error_free(&error);
2772
2773         return r;
2774 }
2775
2776 static int show(DBusConnection *bus, char **args) {
2777         DBusMessage *m = NULL, *reply = NULL;
2778         int r, ret = 0;
2779         DBusError error;
2780         bool show_properties, new_line = false;
2781         char **name;
2782
2783         assert(bus);
2784         assert(args);
2785
2786         dbus_error_init(&error);
2787
2788         show_properties = !streq(args[0], "status");
2789
2790         if (show_properties)
2791                 pager_open_if_enabled();
2792
2793         if (show_properties && strv_length(args) <= 1) {
2794                 /* If not argument is specified inspect the manager
2795                  * itself */
2796
2797                 ret = show_one(args[0], bus, "/org/freedesktop/systemd1", show_properties, &new_line);
2798                 goto finish;
2799         }
2800
2801         STRV_FOREACH(name, args+1) {
2802                 const char *path = NULL;
2803                 uint32_t id;
2804
2805                 if (safe_atou32(*name, &id) < 0) {
2806
2807                         /* Interpret as unit name */
2808
2809                         if (!(m = dbus_message_new_method_call(
2810                                               "org.freedesktop.systemd1",
2811                                               "/org/freedesktop/systemd1",
2812                                               "org.freedesktop.systemd1.Manager",
2813                                               "LoadUnit"))) {
2814                                 log_error("Could not allocate message.");
2815                                 ret = -ENOMEM;
2816                                 goto finish;
2817                         }
2818
2819                         if (!dbus_message_append_args(m,
2820                                                       DBUS_TYPE_STRING, name,
2821                                                       DBUS_TYPE_INVALID)) {
2822                                 log_error("Could not append arguments to message.");
2823                                 ret = -ENOMEM;
2824                                 goto finish;
2825                         }
2826
2827                         if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2828
2829                                 if (!dbus_error_has_name(&error, DBUS_ERROR_ACCESS_DENIED)) {
2830                                         log_error("Failed to issue method call: %s", bus_error_message(&error));
2831                                         ret = -EIO;
2832                                         goto finish;
2833                                 }
2834
2835                                 dbus_error_free(&error);
2836
2837                                 dbus_message_unref(m);
2838                                 if (!(m = dbus_message_new_method_call(
2839                                                       "org.freedesktop.systemd1",
2840                                                       "/org/freedesktop/systemd1",
2841                                                       "org.freedesktop.systemd1.Manager",
2842                                                       "GetUnit"))) {
2843                                         log_error("Could not allocate message.");
2844                                         ret = -ENOMEM;
2845                                         goto finish;
2846                                 }
2847
2848                                 if (!dbus_message_append_args(m,
2849                                                               DBUS_TYPE_STRING, name,
2850                                                               DBUS_TYPE_INVALID)) {
2851                                         log_error("Could not append arguments to message.");
2852                                         ret = -ENOMEM;
2853                                         goto finish;
2854                                 }
2855
2856                                 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2857                                         log_error("Failed to issue method call: %s", bus_error_message(&error));
2858
2859                                         if (dbus_error_has_name(&error, BUS_ERROR_NO_SUCH_UNIT))
2860                                                 ret = 4; /* According to LSB: "program or service status is unknown" */
2861                                         else
2862                                                 ret = -EIO;
2863                                         goto finish;
2864                                 }
2865                         }
2866
2867                 } else if (show_properties) {
2868
2869                         /* Interpret as job id */
2870
2871                         if (!(m = dbus_message_new_method_call(
2872                                               "org.freedesktop.systemd1",
2873                                               "/org/freedesktop/systemd1",
2874                                               "org.freedesktop.systemd1.Manager",
2875                                               "GetJob"))) {
2876                                 log_error("Could not allocate message.");
2877                                 ret = -ENOMEM;
2878                                 goto finish;
2879                         }
2880
2881                         if (!dbus_message_append_args(m,
2882                                                       DBUS_TYPE_UINT32, &id,
2883                                                       DBUS_TYPE_INVALID)) {
2884                                 log_error("Could not append arguments to message.");
2885                                 ret = -ENOMEM;
2886                                 goto finish;
2887                         }
2888
2889                         if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2890                                 log_error("Failed to issue method call: %s", bus_error_message(&error));
2891                                 ret = -EIO;
2892                                 goto finish;
2893                         }
2894                 } else {
2895
2896                         /* Interpret as PID */
2897
2898                         if (!(m = dbus_message_new_method_call(
2899                                               "org.freedesktop.systemd1",
2900                                               "/org/freedesktop/systemd1",
2901                                               "org.freedesktop.systemd1.Manager",
2902                                               "GetUnitByPID"))) {
2903                                 log_error("Could not allocate message.");
2904                                 ret = -ENOMEM;
2905                                 goto finish;
2906                         }
2907
2908                         if (!dbus_message_append_args(m,
2909                                                       DBUS_TYPE_UINT32, &id,
2910                                                       DBUS_TYPE_INVALID)) {
2911                                 log_error("Could not append arguments to message.");
2912                                 ret = -ENOMEM;
2913                                 goto finish;
2914                         }
2915
2916                         if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2917                                 log_error("Failed to issue method call: %s", bus_error_message(&error));
2918                                 ret = -EIO;
2919                                 goto finish;
2920                         }
2921                 }
2922
2923                 if (!dbus_message_get_args(reply, &error,
2924                                            DBUS_TYPE_OBJECT_PATH, &path,
2925                                            DBUS_TYPE_INVALID)) {
2926                         log_error("Failed to parse reply: %s", bus_error_message(&error));
2927                         ret = -EIO;
2928                         goto finish;
2929                 }
2930
2931                 if ((r = show_one(args[0], bus, path, show_properties, &new_line)) != 0)
2932                         ret = r;
2933
2934                 dbus_message_unref(m);
2935                 dbus_message_unref(reply);
2936                 m = reply = NULL;
2937         }
2938
2939 finish:
2940         if (m)
2941                 dbus_message_unref(m);
2942
2943         if (reply)
2944                 dbus_message_unref(reply);
2945
2946         dbus_error_free(&error);
2947
2948         return ret;
2949 }
2950
2951 static int dump(DBusConnection *bus, char **args) {
2952         DBusMessage *m = NULL, *reply = NULL;
2953         DBusError error;
2954         int r;
2955         const char *text;
2956
2957         dbus_error_init(&error);
2958
2959         pager_open_if_enabled();
2960
2961         if (!(m = dbus_message_new_method_call(
2962                               "org.freedesktop.systemd1",
2963                               "/org/freedesktop/systemd1",
2964                               "org.freedesktop.systemd1.Manager",
2965                               "Dump"))) {
2966                 log_error("Could not allocate message.");
2967                 return -ENOMEM;
2968         }
2969
2970         if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2971                 log_error("Failed to issue method call: %s", bus_error_message(&error));
2972                 r = -EIO;
2973                 goto finish;
2974         }
2975
2976         if (!dbus_message_get_args(reply, &error,
2977                                    DBUS_TYPE_STRING, &text,
2978                                    DBUS_TYPE_INVALID)) {
2979                 log_error("Failed to parse reply: %s", bus_error_message(&error));
2980                 r = -EIO;
2981                 goto finish;
2982         }
2983
2984         fputs(text, stdout);
2985
2986         r = 0;
2987
2988 finish:
2989         if (m)
2990                 dbus_message_unref(m);
2991
2992         if (reply)
2993                 dbus_message_unref(reply);
2994
2995         dbus_error_free(&error);
2996
2997         return r;
2998 }
2999
3000 static int snapshot(DBusConnection *bus, char **args) {
3001         DBusMessage *m = NULL, *reply = NULL;
3002         DBusError error;
3003         int r;
3004         const char *name = "", *path, *id;
3005         dbus_bool_t cleanup = FALSE;
3006         DBusMessageIter iter, sub;
3007         const char
3008                 *interface = "org.freedesktop.systemd1.Unit",
3009                 *property = "Id";
3010
3011         dbus_error_init(&error);
3012
3013         if (!(m = dbus_message_new_method_call(
3014                               "org.freedesktop.systemd1",
3015                               "/org/freedesktop/systemd1",
3016                               "org.freedesktop.systemd1.Manager",
3017                               "CreateSnapshot"))) {
3018                 log_error("Could not allocate message.");
3019                 return -ENOMEM;
3020         }
3021
3022         if (strv_length(args) > 1)
3023                 name = args[1];
3024
3025         if (!dbus_message_append_args(m,
3026                                       DBUS_TYPE_STRING, &name,
3027                                       DBUS_TYPE_BOOLEAN, &cleanup,
3028                                       DBUS_TYPE_INVALID)) {
3029                 log_error("Could not append arguments to message.");
3030                 r = -ENOMEM;
3031                 goto finish;
3032         }
3033
3034         if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3035                 log_error("Failed to issue method call: %s", bus_error_message(&error));
3036                 r = -EIO;
3037                 goto finish;
3038         }
3039
3040         if (!dbus_message_get_args(reply, &error,
3041                                    DBUS_TYPE_OBJECT_PATH, &path,
3042                                    DBUS_TYPE_INVALID)) {
3043                 log_error("Failed to parse reply: %s", bus_error_message(&error));
3044                 r = -EIO;
3045                 goto finish;
3046         }
3047
3048         dbus_message_unref(m);
3049         if (!(m = dbus_message_new_method_call(
3050                               "org.freedesktop.systemd1",
3051                               path,
3052                               "org.freedesktop.DBus.Properties",
3053                               "Get"))) {
3054                 log_error("Could not allocate message.");
3055                 return -ENOMEM;
3056         }
3057
3058         if (!dbus_message_append_args(m,
3059                                       DBUS_TYPE_STRING, &interface,
3060                                       DBUS_TYPE_STRING, &property,
3061                                       DBUS_TYPE_INVALID)) {
3062                 log_error("Could not append arguments to message.");
3063                 r = -ENOMEM;
3064                 goto finish;
3065         }
3066
3067         dbus_message_unref(reply);
3068         if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3069                 log_error("Failed to issue method call: %s", bus_error_message(&error));
3070                 r = -EIO;
3071                 goto finish;
3072         }
3073
3074         if (!dbus_message_iter_init(reply, &iter) ||
3075             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT)  {
3076                 log_error("Failed to parse reply.");
3077                 r = -EIO;
3078                 goto finish;
3079         }
3080
3081         dbus_message_iter_recurse(&iter, &sub);
3082
3083         if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING)  {
3084                 log_error("Failed to parse reply.");
3085                 r = -EIO;
3086                 goto finish;
3087         }
3088
3089         dbus_message_iter_get_basic(&sub, &id);
3090
3091         if (!arg_quiet)
3092                 puts(id);
3093         r = 0;
3094
3095 finish:
3096         if (m)
3097                 dbus_message_unref(m);
3098
3099         if (reply)
3100                 dbus_message_unref(reply);
3101
3102         dbus_error_free(&error);
3103
3104         return r;
3105 }
3106
3107 static int delete_snapshot(DBusConnection *bus, char **args) {
3108         DBusMessage *m = NULL, *reply = NULL;
3109         int r;
3110         DBusError error;
3111         char **name;
3112
3113         assert(bus);
3114         assert(args);
3115
3116         dbus_error_init(&error);
3117
3118         STRV_FOREACH(name, args+1) {
3119                 const char *path = NULL;
3120
3121                 if (!(m = dbus_message_new_method_call(
3122                                       "org.freedesktop.systemd1",
3123                                       "/org/freedesktop/systemd1",
3124                                       "org.freedesktop.systemd1.Manager",
3125                                       "GetUnit"))) {
3126                         log_error("Could not allocate message.");
3127                         r = -ENOMEM;
3128                         goto finish;
3129                 }
3130
3131                 if (!dbus_message_append_args(m,
3132                                               DBUS_TYPE_STRING, name,
3133                                               DBUS_TYPE_INVALID)) {
3134                         log_error("Could not append arguments to message.");
3135                         r = -ENOMEM;
3136                         goto finish;
3137                 }
3138
3139                 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3140                         log_error("Failed to issue method call: %s", bus_error_message(&error));
3141                         r = -EIO;
3142                         goto finish;
3143                 }
3144
3145                 if (!dbus_message_get_args(reply, &error,
3146                                            DBUS_TYPE_OBJECT_PATH, &path,
3147                                            DBUS_TYPE_INVALID)) {
3148                         log_error("Failed to parse reply: %s", bus_error_message(&error));
3149                         r = -EIO;
3150                         goto finish;
3151                 }
3152
3153                 dbus_message_unref(m);
3154                 if (!(m = dbus_message_new_method_call(
3155                                       "org.freedesktop.systemd1",
3156                                       path,
3157                                       "org.freedesktop.systemd1.Snapshot",
3158                                       "Remove"))) {
3159                         log_error("Could not allocate message.");
3160                         r = -ENOMEM;
3161                         goto finish;
3162                 }
3163
3164                 dbus_message_unref(reply);
3165                 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3166                         log_error("Failed to issue method call: %s", bus_error_message(&error));
3167                         r = -EIO;
3168                         goto finish;
3169                 }
3170
3171                 dbus_message_unref(m);
3172                 dbus_message_unref(reply);
3173                 m = reply = NULL;
3174         }
3175
3176         r = 0;
3177
3178 finish:
3179         if (m)
3180                 dbus_message_unref(m);
3181
3182         if (reply)
3183                 dbus_message_unref(reply);
3184
3185         dbus_error_free(&error);
3186
3187         return r;
3188 }
3189
3190 static int daemon_reload(DBusConnection *bus, char **args) {
3191         DBusMessage *m = NULL, *reply = NULL;
3192         DBusError error;
3193         int r;
3194         const char *method;
3195
3196         dbus_error_init(&error);
3197
3198         if (arg_action == ACTION_RELOAD)
3199                 method = "Reload";
3200         else if (arg_action == ACTION_REEXEC)
3201                 method = "Reexecute";
3202         else {
3203                 assert(arg_action == ACTION_SYSTEMCTL);
3204
3205                 method =
3206                         streq(args[0], "clear-jobs")    ||
3207                         streq(args[0], "cancel")        ? "ClearJobs" :
3208                         streq(args[0], "daemon-reexec") ? "Reexecute" :
3209                         streq(args[0], "reset-failed")  ? "ResetFailed" :
3210                         streq(args[0], "halt")          ? "Halt" :
3211                         streq(args[0], "poweroff")      ? "PowerOff" :
3212                         streq(args[0], "reboot")        ? "Reboot" :
3213                         streq(args[0], "kexec")         ? "KExec" :
3214                         streq(args[0], "exit")          ? "Exit" :
3215                                     /* "daemon-reload" */ "Reload";
3216         }
3217
3218         if (!(m = dbus_message_new_method_call(
3219                               "org.freedesktop.systemd1",
3220                               "/org/freedesktop/systemd1",
3221                               "org.freedesktop.systemd1.Manager",
3222                               method))) {
3223                 log_error("Could not allocate message.");
3224                 return -ENOMEM;
3225         }
3226
3227         if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3228
3229                 if (arg_action != ACTION_SYSTEMCTL && error_is_no_service(&error)) {
3230                         /* There's always a fallback possible for
3231                          * legacy actions. */
3232                         r = -EADDRNOTAVAIL;
3233                         goto finish;
3234                 }
3235
3236                 if (streq(method, "Reexecute") && dbus_error_has_name(&error, DBUS_ERROR_NO_REPLY)) {
3237                         /* On reexecution, we expect a disconnect, not
3238                          * a reply */
3239                         r = 0;
3240                         goto finish;
3241                 }
3242
3243                 log_error("Failed to issue method call: %s", bus_error_message(&error));
3244                 r = -EIO;
3245                 goto finish;
3246         }
3247
3248         r = 0;
3249
3250 finish:
3251         if (m)
3252                 dbus_message_unref(m);
3253
3254         if (reply)
3255                 dbus_message_unref(reply);
3256
3257         dbus_error_free(&error);
3258
3259         return r;
3260 }
3261
3262 static int reset_failed(DBusConnection *bus, char **args) {
3263         DBusMessage *m = NULL;
3264         int r;
3265         DBusError error;
3266         char **name;
3267
3268         assert(bus);
3269         dbus_error_init(&error);
3270
3271         if (strv_length(args) <= 1)
3272                 return daemon_reload(bus, args);
3273
3274         STRV_FOREACH(name, args+1) {
3275                 DBusMessage *reply;
3276
3277                 if (!(m = dbus_message_new_method_call(
3278                                       "org.freedesktop.systemd1",
3279                                       "/org/freedesktop/systemd1",
3280                                       "org.freedesktop.systemd1.Manager",
3281                                       "ResetFailedUnit"))) {
3282                         log_error("Could not allocate message.");
3283                         r = -ENOMEM;
3284                         goto finish;
3285                 }
3286
3287                 if (!dbus_message_append_args(m,
3288                                               DBUS_TYPE_STRING, name,
3289                                               DBUS_TYPE_INVALID)) {
3290                         log_error("Could not append arguments to message.");
3291                         r = -ENOMEM;
3292                         goto finish;
3293                 }
3294
3295                 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3296                         log_error("Failed to issue method call: %s", bus_error_message(&error));
3297                         r = -EIO;
3298                         goto finish;
3299                 }
3300
3301                 dbus_message_unref(m);
3302                 dbus_message_unref(reply);
3303                 m = reply = NULL;
3304         }
3305
3306         r = 0;
3307
3308 finish:
3309         if (m)
3310                 dbus_message_unref(m);
3311
3312         dbus_error_free(&error);
3313
3314         return r;
3315 }
3316
3317 static int show_enviroment(DBusConnection *bus, char **args) {
3318         DBusMessage *m = NULL, *reply = NULL;
3319         DBusError error;
3320         DBusMessageIter iter, sub, sub2;
3321         int r;
3322         const char
3323                 *interface = "org.freedesktop.systemd1.Manager",
3324                 *property = "Environment";
3325
3326         dbus_error_init(&error);
3327
3328         pager_open_if_enabled();
3329
3330         if (!(m = dbus_message_new_method_call(
3331                               "org.freedesktop.systemd1",
3332                               "/org/freedesktop/systemd1",
3333                               "org.freedesktop.DBus.Properties",
3334                               "Get"))) {
3335                 log_error("Could not allocate message.");
3336                 return -ENOMEM;
3337         }
3338
3339         if (!dbus_message_append_args(m,
3340                                       DBUS_TYPE_STRING, &interface,
3341                                       DBUS_TYPE_STRING, &property,
3342                                       DBUS_TYPE_INVALID)) {
3343                 log_error("Could not append arguments to message.");
3344                 r = -ENOMEM;
3345                 goto finish;
3346         }
3347
3348         if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3349                 log_error("Failed to issue method call: %s", bus_error_message(&error));
3350                 r = -EIO;
3351                 goto finish;
3352         }
3353
3354         if (!dbus_message_iter_init(reply, &iter) ||
3355             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT)  {
3356                 log_error("Failed to parse reply.");
3357                 r = -EIO;
3358                 goto finish;
3359         }
3360
3361         dbus_message_iter_recurse(&iter, &sub);
3362
3363         if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_ARRAY ||
3364             dbus_message_iter_get_element_type(&sub) != DBUS_TYPE_STRING)  {
3365                 log_error("Failed to parse reply.");
3366                 r = -EIO;
3367                 goto finish;
3368         }
3369
3370         dbus_message_iter_recurse(&sub, &sub2);
3371
3372         while (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_INVALID) {
3373                 const char *text;
3374
3375                 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_STRING) {
3376                         log_error("Failed to parse reply.");
3377                         r = -EIO;
3378                         goto finish;
3379                 }
3380
3381                 dbus_message_iter_get_basic(&sub2, &text);
3382                 printf("%s\n", text);
3383
3384                 dbus_message_iter_next(&sub2);
3385         }
3386
3387         r = 0;
3388
3389 finish:
3390         if (m)
3391                 dbus_message_unref(m);
3392
3393         if (reply)
3394                 dbus_message_unref(reply);
3395
3396         dbus_error_free(&error);
3397
3398         return r;
3399 }
3400
3401 static int set_environment(DBusConnection *bus, char **args) {
3402         DBusMessage *m = NULL, *reply = NULL;
3403         DBusError error;
3404         int r;
3405         const char *method;
3406         DBusMessageIter iter, sub;
3407         char **name;
3408
3409         dbus_error_init(&error);
3410
3411         method = streq(args[0], "set-environment")
3412                 ? "SetEnvironment"
3413                 : "UnsetEnvironment";
3414
3415         if (!(m = dbus_message_new_method_call(
3416                               "org.freedesktop.systemd1",
3417                               "/org/freedesktop/systemd1",
3418                               "org.freedesktop.systemd1.Manager",
3419                               method))) {
3420
3421                 log_error("Could not allocate message.");
3422                 return -ENOMEM;
3423         }
3424
3425         dbus_message_iter_init_append(m, &iter);
3426
3427         if (!dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "s", &sub)) {
3428                 log_error("Could not append arguments to message.");
3429                 r = -ENOMEM;
3430                 goto finish;
3431         }
3432
3433         STRV_FOREACH(name, args+1)
3434                 if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, name)) {
3435                         log_error("Could not append arguments to message.");
3436                         r = -ENOMEM;
3437                         goto finish;
3438                 }
3439
3440         if (!dbus_message_iter_close_container(&iter, &sub)) {
3441                 log_error("Could not append arguments to message.");
3442                 r = -ENOMEM;
3443                 goto finish;
3444         }
3445
3446         if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3447                 log_error("Failed to issue method call: %s", bus_error_message(&error));
3448                 r = -EIO;
3449                 goto finish;
3450         }
3451
3452         r = 0;
3453
3454 finish:
3455         if (m)
3456                 dbus_message_unref(m);
3457
3458         if (reply)
3459                 dbus_message_unref(reply);
3460
3461         dbus_error_free(&error);
3462
3463         return r;
3464 }
3465
3466 static int enable_sysv_units(char **args) {
3467         int r = 0;
3468
3469 #if defined (HAVE_SYSV_COMPAT) && (defined(TARGET_FEDORA) || defined(TARGET_MANDRIVA) || defined(TARGET_SUSE) || defined(TARGET_MEEGO) || defined(TARGET_ALTLINUX) || defined(TARGET_MAGEIA))
3470         const char *verb = args[0];
3471         unsigned f = 1, t = 1;
3472         LookupPaths paths;
3473
3474         if (arg_scope != UNIT_FILE_SYSTEM)
3475                 return 0;
3476
3477         if (!streq(verb, "enable") &&
3478             !streq(verb, "disable") &&
3479             !streq(verb, "is-enabled"))
3480                 return 0;
3481
3482         /* Processes all SysV units, and reshuffles the array so that
3483          * afterwards only the native units remain */
3484
3485         zero(paths);
3486         r = lookup_paths_init(&paths, MANAGER_SYSTEM, false);
3487         if (r < 0)
3488                 return r;
3489
3490         r = 0;
3491
3492         for (f = 1; args[f]; f++) {
3493                 const char *name;
3494                 char *p;
3495                 bool found_native = false, found_sysv;
3496                 unsigned c = 1;
3497                 const char *argv[6] = { "/sbin/chkconfig", NULL, NULL, NULL, NULL };
3498                 char **k, *l, *q = NULL;
3499                 int j;
3500                 pid_t pid;
3501                 siginfo_t status;
3502
3503                 name = args[f];
3504
3505                 if (!endswith(name, ".service"))
3506                         continue;
3507
3508                 if (path_is_absolute(name))
3509                         continue;
3510
3511                 STRV_FOREACH(k, paths.unit_path) {
3512                         p = NULL;
3513
3514                         if (!isempty(arg_root))
3515                                 asprintf(&p, "%s/%s/%s", arg_root, *k, name);
3516                         else
3517                                 asprintf(&p, "%s/%s", *k, name);
3518
3519                         if (!p) {
3520                                 log_error("No memory");
3521                                 r = -ENOMEM;
3522                                 goto finish;
3523                         }
3524
3525                         found_native = access(p, F_OK) >= 0;
3526                         free(p);
3527
3528                         if (found_native)
3529                                 break;
3530                 }
3531
3532                 if (found_native)
3533                         continue;
3534
3535                 p = NULL;
3536                 if (!isempty(arg_root))
3537                         asprintf(&p, "%s/" SYSTEM_SYSVINIT_PATH "/%s", arg_root, name);
3538                 else
3539                         asprintf(&p, SYSTEM_SYSVINIT_PATH "/%s", name);
3540                 if (!p) {
3541                         log_error("No memory");
3542                         r = -ENOMEM;
3543                         goto finish;
3544                 }
3545
3546                 p[strlen(p) - sizeof(".service") + 1] = 0;
3547                 found_sysv = access(p, F_OK) >= 0;
3548
3549                 if (!found_sysv) {
3550                         free(p);
3551                         continue;
3552                 }
3553
3554                 /* Mark this entry, so that we don't try enabling it as native unit */
3555                 args[f] = (char*) "";
3556
3557                 log_info("%s is not a native service, redirecting to /sbin/chkconfig.", name);
3558
3559                 if (!isempty(arg_root))
3560                         argv[c++] = q = strappend("--root=", arg_root);
3561
3562                 argv[c++] = file_name_from_path(p);
3563                 argv[c++] =
3564                         streq(verb, "enable") ? "on" :
3565                         streq(verb, "disable") ? "off" : "--level=5";
3566                 argv[c] = NULL;
3567
3568                 l = strv_join((char**)argv, " ");
3569                 if (!l) {
3570                         log_error("No memory.");
3571                         free(q);
3572                         free(p);
3573                         r = -ENOMEM;
3574                         goto finish;
3575                 }
3576
3577                 log_info("Executing %s", l);
3578                 free(l);
3579
3580                 pid = fork();
3581                 if (pid < 0) {
3582                         log_error("Failed to fork: %m");
3583                         free(p);
3584                         free(q);
3585                         r = -errno;
3586                         goto finish;
3587                 } else if (pid == 0) {
3588                         /* Child */
3589
3590                         execv(argv[0], (char**) argv);
3591                         _exit(EXIT_FAILURE);
3592                 }
3593
3594                 free(p);
3595                 free(q);
3596
3597                 j = wait_for_terminate(pid, &status);
3598                 if (j < 0) {
3599                         log_error("Failed to wait for child: %s", strerror(-r));
3600                         r = j;
3601                         goto finish;
3602                 }
3603
3604                 if (status.si_code == CLD_EXITED) {
3605                         if (streq(verb, "is-enabled")) {
3606                                 if (status.si_status == 0) {
3607                                         if (!arg_quiet)
3608                                                 puts("enabled");
3609                                         r = 1;
3610                                 } else {
3611                                         if (!arg_quiet)
3612                                                 puts("disabled");
3613                                 }
3614
3615                         } else if (status.si_status != 0) {
3616                                 r = -EINVAL;
3617                                 goto finish;
3618                         }
3619                 } else {
3620                         r = -EPROTO;
3621                         goto finish;
3622                 }
3623         }
3624
3625 finish:
3626         lookup_paths_free(&paths);
3627
3628         /* Drop all SysV units */
3629         for (f = 1, t = 1; args[f]; f++) {
3630
3631                 if (isempty(args[f]))
3632                         continue;
3633
3634                 args[t++] = args[f];
3635         }
3636
3637         args[t] = NULL;
3638
3639 #endif
3640         return r;
3641 }
3642
3643 static int enable_unit(DBusConnection *bus, char **args) {
3644         const char *verb = args[0];
3645         UnitFileChange *changes = NULL;
3646         unsigned n_changes = 0, i;
3647         int carries_install_info = -1;
3648         DBusMessage *m = NULL, *reply = NULL;
3649         int r;
3650         DBusError error;
3651
3652         dbus_error_init(&error);
3653
3654         r = enable_sysv_units(args);
3655         if (r < 0)
3656                 return r;
3657
3658         if (!bus || avoid_bus()) {
3659                 if (streq(verb, "enable")) {
3660                         r = unit_file_enable(arg_scope, arg_runtime, arg_root, args+1, arg_force, &changes, &n_changes);
3661                         carries_install_info = r;
3662                 } else if (streq(verb, "disable"))
3663                         r = unit_file_disable(arg_scope, arg_runtime, arg_root, args+1, &changes, &n_changes);
3664                 else if (streq(verb, "reenable")) {
3665                         r = unit_file_reenable(arg_scope, arg_runtime, arg_root, args+1, arg_force, &changes, &n_changes);
3666                         carries_install_info = r;
3667                 } else if (streq(verb, "link"))
3668                         r = unit_file_link(arg_scope, arg_runtime, arg_root, args+1, arg_force, &changes, &n_changes);
3669                 else if (streq(verb, "preset")) {
3670                         r = unit_file_preset(arg_scope, arg_runtime, arg_root, args+1, arg_force, &changes, &n_changes);
3671                         carries_install_info = r;
3672                 } else if (streq(verb, "mask"))
3673                         r = unit_file_mask(arg_scope, arg_runtime, arg_root, args+1, arg_force, &changes, &n_changes);
3674                 else if (streq(verb, "unmask"))
3675                         r = unit_file_unmask(arg_scope, arg_runtime, arg_root, args+1, &changes, &n_changes);
3676                 else
3677                         assert_not_reached("Unknown verb");
3678
3679                 if (r < 0) {
3680                         log_error("Operation failed: %s", strerror(-r));
3681                         goto finish;
3682                 }
3683
3684                 for (i = 0; i < n_changes; i++) {
3685                         if (changes[i].type == UNIT_FILE_SYMLINK)
3686                                 log_info("ln -s '%s' '%s'", changes[i].source, changes[i].path);
3687                         else
3688                                 log_info("rm '%s'", changes[i].path);
3689                 }
3690
3691         } else {
3692                 const char *method;
3693                 bool send_force = true, expect_carries_install_info = false;
3694                 dbus_bool_t a, b;
3695                 DBusMessageIter iter, sub, sub2;
3696
3697                 if (streq(verb, "enable")) {
3698                         method = "EnableUnitFiles";
3699                         expect_carries_install_info = true;
3700                 } else if (streq(verb, "disable")) {
3701                         method = "DisableUnitFiles";
3702                         send_force = false;
3703                 } else if (streq(verb, "reenable")) {
3704                         method = "ReenableUnitFiles";
3705                         expect_carries_install_info = true;
3706                 } else if (streq(verb, "link"))
3707                         method = "LinkUnitFiles";
3708                 else if (streq(verb, "preset")) {
3709                         method = "PresetUnitFiles";
3710                         expect_carries_install_info = true;
3711                 } else if (streq(verb, "mask"))
3712                         method = "MaskUnitFiles";
3713                 else if (streq(verb, "unmask")) {
3714                         method = "UnmaskUnitFiles";
3715                         send_force = false;
3716                 } else
3717                         assert_not_reached("Unknown verb");
3718
3719                 m = dbus_message_new_method_call(
3720                                 "org.freedesktop.systemd1",
3721                                 "/org/freedesktop/systemd1",
3722                                 "org.freedesktop.systemd1.Manager",
3723                                 method);
3724                 if (!m) {
3725                         log_error("Out of memory");
3726                         r = -ENOMEM;
3727                         goto finish;
3728                 }
3729
3730                 dbus_message_iter_init_append(m, &iter);
3731
3732                 r = bus_append_strv_iter(&iter, args+1);
3733                 if (r < 0) {
3734                         log_error("Failed to append unit files.");
3735                         goto finish;
3736                 }
3737
3738                 a = arg_runtime;
3739                 if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &a)) {
3740                         log_error("Failed to append runtime boolean.");
3741                         r = -ENOMEM;
3742                         goto finish;
3743                 }
3744
3745                 if (send_force) {
3746                         b = arg_force;
3747
3748                         if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &b)) {
3749                                 log_error("Failed to append force boolean.");
3750                                 r = -ENOMEM;
3751                                 goto finish;
3752                         }
3753                 }
3754
3755                 reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
3756                 if (!reply) {
3757                         log_error("Failed to issue method call: %s", bus_error_message(&error));
3758                         r = -EIO;
3759                         goto finish;
3760                 }
3761
3762                 if (!dbus_message_iter_init(reply, &iter)) {
3763                         log_error("Failed to initialize iterator.");
3764                         goto finish;
3765                 }
3766
3767                 if (expect_carries_install_info) {
3768                         r = bus_iter_get_basic_and_next(&iter, DBUS_TYPE_BOOLEAN, &b, true);
3769                         if (r < 0) {
3770                                 log_error("Failed to parse reply.");
3771                                 goto finish;
3772                         }
3773
3774                         carries_install_info = b;
3775                 }
3776
3777                 if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
3778                     dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_STRUCT)  {
3779                         log_error("Failed to parse reply.");
3780                         r = -EIO;
3781                         goto finish;
3782                 }
3783
3784                 dbus_message_iter_recurse(&iter, &sub);
3785                 while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
3786                         const char *type, *path, *source;
3787
3788                         if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRUCT) {
3789                                 log_error("Failed to parse reply.");
3790                                 r = -EIO;
3791                                 goto finish;
3792                         }
3793
3794                         dbus_message_iter_recurse(&sub, &sub2);
3795
3796                         if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) < 0 ||
3797                             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, true) < 0 ||
3798                             bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &source, false) < 0) {
3799                                 log_error("Failed to parse reply.");
3800                                 r = -EIO;
3801                                 goto finish;
3802                         }
3803
3804                         if (streq(type, "symlink"))
3805                                 log_info("ln -s '%s' '%s'", source, path);
3806                         else
3807                                 log_info("rm '%s'", path);
3808
3809                         dbus_message_iter_next(&sub);
3810                 }
3811
3812                 /* Try to reload if enabeld */
3813                 if (!arg_no_reload)
3814                         r = daemon_reload(bus, args);
3815         }
3816
3817         if (carries_install_info == 0)
3818                 log_warning("Warning: unit files do not carry install information. No operation executed.");
3819
3820 finish:
3821         if (m)
3822                 dbus_message_unref(m);
3823
3824         if (reply)
3825                 dbus_message_unref(reply);
3826
3827         unit_file_changes_free(changes, n_changes);
3828
3829         dbus_error_free(&error);
3830         return r;
3831 }
3832
3833 static int unit_is_enabled(DBusConnection *bus, char **args) {
3834         DBusError error;
3835         int r;
3836         DBusMessage *m = NULL, *reply = NULL;
3837         bool enabled;
3838         char **name;
3839
3840         dbus_error_init(&error);
3841
3842         r = enable_sysv_units(args);
3843         if (r < 0)
3844                 return r;
3845
3846         enabled = r > 0;
3847
3848         if (!bus || avoid_bus()) {
3849
3850                 STRV_FOREACH(name, args+1) {
3851                         UnitFileState state;
3852
3853                         state = unit_file_get_state(arg_scope, arg_root, *name);
3854                         if (state < 0) {
3855                                 r = state;
3856                                 goto finish;
3857                         }
3858
3859                         if (state == UNIT_FILE_ENABLED ||
3860                             state == UNIT_FILE_ENABLED_RUNTIME ||
3861                             state == UNIT_FILE_STATIC)
3862                                 enabled = true;
3863
3864                         if (!arg_quiet)
3865                                 puts(unit_file_state_to_string(state));
3866                 }
3867
3868         } else {
3869                 STRV_FOREACH(name, args+1) {
3870                         const char *s;
3871
3872                         m = dbus_message_new_method_call(
3873                                         "org.freedesktop.systemd1",
3874                                         "/org/freedesktop/systemd1",
3875                                         "org.freedesktop.systemd1.Manager",
3876                                         "GetUnitFileState");
3877                         if (!m) {
3878                                 log_error("Out of memory");
3879                                 r = -ENOMEM;
3880                                 goto finish;
3881                         }
3882
3883                         if (!dbus_message_append_args(m,
3884                                                       DBUS_TYPE_STRING, name,
3885                                                       DBUS_TYPE_INVALID)) {
3886                                 log_error("Could not append arguments to message.");
3887                                 r = -ENOMEM;
3888                                 goto finish;
3889                         }
3890
3891                         reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error);
3892                         if (!reply) {
3893                                 log_error("Failed to issue method call: %s", bus_error_message(&error));
3894                                 r = -EIO;
3895                                 goto finish;
3896                         }
3897
3898                         if (!dbus_message_get_args(reply, &error,
3899                                                    DBUS_TYPE_STRING, &s,
3900                                                    DBUS_TYPE_INVALID)) {
3901                                 log_error("Failed to parse reply: %s", bus_error_message(&error));
3902                                 r = -EIO;
3903                                 goto finish;
3904                         }
3905
3906                         dbus_message_unref(m);
3907                         dbus_message_unref(reply);
3908                         m = reply = NULL;
3909
3910                         if (streq(s, "enabled") ||
3911                             streq(s, "enabled-runtime") ||
3912                             streq(s, "static"))
3913                                 enabled = true;
3914
3915                         if (!arg_quiet)
3916                                 puts(s);
3917                 }
3918         }
3919
3920         r = enabled ? 0 : 1;
3921
3922 finish:
3923         if (m)
3924                 dbus_message_unref(m);
3925
3926         if (reply)
3927                 dbus_message_unref(reply);
3928
3929         dbus_error_free(&error);
3930         return r;
3931 }
3932
3933 static int systemctl_help(void) {
3934
3935         pager_open_if_enabled();
3936
3937         printf("%s [OPTIONS...] {COMMAND} ...\n\n"
3938                "Query or send control commands to the systemd manager.\n\n"
3939                "  -h --help           Show this help\n"
3940                "     --version        Show package version\n"
3941                "  -t --type=TYPE      List only units of a particular type\n"
3942                "  -p --property=NAME  Show only properties by this name\n"
3943                "  -a --all            Show all units/properties, including dead/empty ones\n"
3944                "     --failed         Show only failed units\n"
3945                "     --full           Don't ellipsize unit names on output\n"
3946                "     --fail           When queueing a new job, fail if conflicting jobs are\n"
3947                "                      pending\n"
3948                "     --ignore-dependencies\n"
3949                "                      When queueing a new job, ignore all its dependencies\n"
3950                "     --kill-who=WHO   Who to send signal to\n"
3951                "  -s --signal=SIGNAL  Which signal to send\n"
3952                "  -H --host=[USER@]HOST\n"
3953                "                      Show information for remote host\n"
3954                "  -P --privileged     Acquire privileges before execution\n"
3955                "  -q --quiet          Suppress output\n"
3956                "     --no-block       Do not wait until operation finished\n"
3957                "     --no-wall        Don't send wall message before halt/power-off/reboot\n"
3958                "     --no-reload      When enabling/disabling unit files, don't reload daemon\n"
3959                "                      configuration\n"
3960                "     --no-legend      Do not print a legend (column headers and hints)\n"
3961                "     --no-pager       Do not pipe output into a pager\n"
3962                "     --no-ask-password\n"
3963                "                      Do not ask for system passwords\n"
3964                "     --order          When generating graph for dot, show only order\n"
3965                "     --require        When generating graph for dot, show only requirement\n"
3966                "     --system         Connect to system manager\n"
3967                "     --user           Connect to user service manager\n"
3968                "     --global         Enable/disable unit files globally\n"
3969                "  -f --force          When enabling unit files, override existing symlinks\n"
3970                "                      When shutting down, execute action immediately\n"
3971                "     --root=PATH      Enable unit files in the specified root directory\n"
3972                "     --runtime        Enable unit files only temporarily until next reboot\n\n"
3973                "Unit Commands:\n"
3974                "  list-units                      List loaded units\n"
3975                "  start [NAME...]                 Start (activate) one or more units\n"
3976                "  stop [NAME...]                  Stop (deactivate) one or more units\n"
3977                "  reload [NAME...]                Reload one or more units\n"
3978                "  restart [NAME...]               Start or restart one or more units\n"
3979                "  try-restart [NAME...]           Restart one or more units if active\n"
3980                "  reload-or-restart [NAME...]     Reload one or more units is possible,\n"
3981                "                                  otherwise start or restart\n"
3982                "  reload-or-try-restart [NAME...] Reload one or more units is possible,\n"
3983                "                                  otherwise restart if active\n"
3984                "  isolate [NAME]                  Start one unit and stop all others\n"
3985                "  kill [NAME...]                  Send signal to processes of a unit\n"
3986                "  is-active [NAME...]             Check whether units are active\n"
3987                "  status [NAME...|PID...]         Show runtime status of one or more units\n"
3988                "  show [NAME...|JOB...]           Show properties of one or more\n"
3989                "                                  units/jobs or the manager\n"
3990                "  reset-failed [NAME...]          Reset failed state for all, one, or more\n"
3991                "                                  units\n"
3992                "  load [NAME...]                  Load one or more units\n\n"
3993                "Unit File Commands:\n"
3994                "  list-unit-files                 List installed unit files\n"
3995                "  enable [NAME...]                Enable one or more unit files\n"
3996                "  disable [NAME...]               Disable one or more unit files\n"
3997                "  reenable [NAME...]              Reenable one or more unit files\n"
3998                "  preset [NAME...]                Enable/disable one or more unit files\n"
3999                "                                  based on preset configuration\n"
4000                "  mask [NAME...]                  Mask one or more units\n"
4001                "  unmask [NAME...]                Unmask one or more units\n"
4002                "  link [PATH...]                  Link one or more units files into\n"
4003                "                                  the search path\n"
4004                "  is-enabled [NAME...]            Check whether unit files are enabled\n\n"
4005                "Job Commands:\n"
4006                "  list-jobs                       List jobs\n"
4007                "  cancel [JOB...]                 Cancel all, one, or more jobs\n\n"
4008                "Status Commands:\n"
4009                "  dump                            Dump server status\n"
4010                "  dot                             Dump dependency graph for dot(1)\n\n"
4011                "Snapshot Commands:\n"
4012                "  snapshot [NAME]                 Create a snapshot\n"
4013                "  delete [NAME...]                Remove one or more snapshots\n\n"
4014                "Environment Commands:\n"
4015                "  show-environment                Dump environment\n"
4016                "  set-environment [NAME=VALUE...] Set one or more environment variables\n"
4017                "  unset-environment [NAME...]     Unset one or more environment variables\n\n"
4018                "Manager Lifecycle Commands:\n"
4019                "  daemon-reload                   Reload systemd manager configuration\n"
4020                "  daemon-reexec                   Reexecute systemd manager\n\n"
4021                "System Commands:\n"
4022                "  default                         Enter system default mode\n"
4023                "  rescue                          Enter system rescue mode\n"
4024                "  emergency                       Enter system emergency mode\n"
4025                "  halt                            Shut down and halt the system\n"
4026                "  poweroff                        Shut down and power-off the system\n"
4027                "  reboot                          Shut down and reboot the system\n"
4028                "  kexec                           Shut down and reboot the system with kexec\n"
4029                "  exit                            Ask for user instance termination\n",
4030                program_invocation_short_name);
4031
4032         return 0;
4033 }
4034
4035 static int halt_help(void) {
4036
4037         printf("%s [OPTIONS...]\n\n"
4038                "%s the system.\n\n"
4039                "     --help      Show this help\n"
4040                "     --halt      Halt the machine\n"
4041                "  -p --poweroff  Switch off the machine\n"
4042                "     --reboot    Reboot the machine\n"
4043                "  -f --force     Force immediate halt/power-off/reboot\n"
4044                "  -w --wtmp-only Don't halt/power-off/reboot, just write wtmp record\n"
4045                "  -d --no-wtmp   Don't write wtmp record\n"
4046                "  -n --no-sync   Don't sync before halt/power-off/reboot\n"
4047                "     --no-wall   Don't send wall message before halt/power-off/reboot\n",
4048                program_invocation_short_name,
4049                arg_action == ACTION_REBOOT   ? "Reboot" :
4050                arg_action == ACTION_POWEROFF ? "Power off" :
4051                                                "Halt");
4052
4053         return 0;
4054 }
4055
4056 static int shutdown_help(void) {
4057
4058         printf("%s [OPTIONS...] [TIME] [WALL...]\n\n"
4059                "Shut down the system.\n\n"
4060                "     --help      Show this help\n"
4061                "  -H --halt      Halt the machine\n"
4062                "  -P --poweroff  Power-off the machine\n"
4063                "  -r --reboot    Reboot the machine\n"
4064                "  -h             Equivalent to --poweroff, overriden by --halt\n"
4065                "  -k             Don't halt/power-off/reboot, just send warnings\n"
4066                "     --no-wall   Don't send wall message before halt/power-off/reboot\n"
4067                "  -c             Cancel a pending shutdown\n",
4068                program_invocation_short_name);
4069
4070         return 0;
4071 }
4072
4073 static int telinit_help(void) {
4074
4075         printf("%s [OPTIONS...] {COMMAND}\n\n"
4076                "Send control commands to the init daemon.\n\n"
4077                "     --help      Show this help\n"
4078                "     --no-wall   Don't send wall message before halt/power-off/reboot\n\n"
4079                "Commands:\n"
4080                "  0              Power-off the machine\n"
4081                "  6              Reboot the machine\n"
4082                "  2, 3, 4, 5     Start runlevelX.target unit\n"
4083                "  1, s, S        Enter rescue mode\n"
4084                "  q, Q           Reload init daemon configuration\n"
4085                "  u, U           Reexecute init daemon\n",
4086                program_invocation_short_name);
4087
4088         return 0;
4089 }
4090
4091 static int runlevel_help(void) {
4092
4093         printf("%s [OPTIONS...]\n\n"
4094                "Prints the previous and current runlevel of the init system.\n\n"
4095                "     --help      Show this help\n",
4096                program_invocation_short_name);
4097
4098         return 0;
4099 }
4100
4101 static int systemctl_parse_argv(int argc, char *argv[]) {
4102
4103         enum {
4104                 ARG_FAIL = 0x100,
4105                 ARG_IGNORE_DEPENDENCIES,
4106                 ARG_VERSION,
4107                 ARG_USER,
4108                 ARG_SYSTEM,
4109                 ARG_GLOBAL,
4110                 ARG_NO_BLOCK,
4111                 ARG_NO_LEGEND,
4112                 ARG_NO_PAGER,
4113                 ARG_NO_WALL,
4114                 ARG_ORDER,
4115                 ARG_REQUIRE,
4116                 ARG_ROOT,
4117                 ARG_FULL,
4118                 ARG_NO_RELOAD,
4119                 ARG_KILL_MODE,
4120                 ARG_KILL_WHO,
4121                 ARG_NO_ASK_PASSWORD,
4122                 ARG_FAILED,
4123                 ARG_RUNTIME
4124         };
4125
4126         static const struct option options[] = {
4127                 { "help",      no_argument,       NULL, 'h'           },
4128                 { "version",   no_argument,       NULL, ARG_VERSION   },
4129                 { "type",      required_argument, NULL, 't'           },
4130                 { "property",  required_argument, NULL, 'p'           },
4131                 { "all",       no_argument,       NULL, 'a'           },
4132                 { "failed",    no_argument,       NULL, ARG_FAILED    },
4133                 { "full",      no_argument,       NULL, ARG_FULL      },
4134                 { "fail",      no_argument,       NULL, ARG_FAIL      },
4135                 { "ignore-dependencies", no_argument, NULL, ARG_IGNORE_DEPENDENCIES },
4136                 { "user",      no_argument,       NULL, ARG_USER      },
4137                 { "system",    no_argument,       NULL, ARG_SYSTEM    },
4138                 { "global",    no_argument,       NULL, ARG_GLOBAL    },
4139                 { "no-block",  no_argument,       NULL, ARG_NO_BLOCK  },
4140                 { "no-legend", no_argument,       NULL, ARG_NO_LEGEND },
4141                 { "no-pager",  no_argument,       NULL, ARG_NO_PAGER  },
4142                 { "no-wall",   no_argument,       NULL, ARG_NO_WALL   },
4143                 { "quiet",     no_argument,       NULL, 'q'           },
4144                 { "order",     no_argument,       NULL, ARG_ORDER     },
4145                 { "require",   no_argument,       NULL, ARG_REQUIRE   },
4146                 { "root",      required_argument, NULL, ARG_ROOT      },
4147                 { "force",     no_argument,       NULL, 'f'           },
4148                 { "no-reload", no_argument,       NULL, ARG_NO_RELOAD },
4149                 { "kill-mode", required_argument, NULL, ARG_KILL_MODE }, /* undocumented on purpose */
4150                 { "kill-who",  required_argument, NULL, ARG_KILL_WHO  },
4151                 { "signal",    required_argument, NULL, 's'           },
4152                 { "no-ask-password", no_argument, NULL, ARG_NO_ASK_PASSWORD },
4153                 { "host",      required_argument, NULL, 'H'           },
4154                 { "privileged",no_argument,       NULL, 'P'           },
4155                 { "runtime",   no_argument,       NULL, ARG_RUNTIME   },
4156                 { NULL,        0,                 NULL, 0             }
4157         };
4158
4159         int c;
4160
4161         assert(argc >= 0);
4162         assert(argv);
4163
4164         /* Only when running as systemctl we ask for passwords */
4165         arg_ask_password = true;
4166
4167         while ((c = getopt_long(argc, argv, "ht:p:aqfs:H:P", options, NULL)) >= 0) {
4168
4169                 switch (c) {
4170
4171                 case 'h':
4172                         systemctl_help();
4173                         return 0;
4174
4175                 case ARG_VERSION:
4176                         puts(PACKAGE_STRING);
4177                         puts(DISTRIBUTION);
4178                         puts(SYSTEMD_FEATURES);
4179                         return 0;
4180
4181                 case 't':
4182                         arg_type = optarg;
4183                         break;
4184
4185                 case 'p': {
4186                         char **l;
4187
4188                         if (!(l = strv_append(arg_property, optarg)))
4189                                 return -ENOMEM;
4190
4191                         strv_free(arg_property);
4192                         arg_property = l;
4193
4194                         /* If the user asked for a particular
4195                          * property, show it to him, even if it is
4196                          * empty. */
4197                         arg_all = true;
4198                         break;
4199                 }
4200
4201                 case 'a':
4202                         arg_all = true;
4203                         break;
4204
4205                 case ARG_FAIL:
4206                         arg_job_mode = "fail";
4207                         break;
4208
4209                 case ARG_IGNORE_DEPENDENCIES:
4210                         arg_job_mode = "ignore-dependencies";
4211                         break;
4212
4213                 case ARG_USER:
4214                         arg_scope = UNIT_FILE_USER;
4215                         break;
4216
4217                 case ARG_SYSTEM:
4218                         arg_scope = UNIT_FILE_SYSTEM;
4219                         break;
4220
4221                 case ARG_GLOBAL:
4222                         arg_scope = UNIT_FILE_GLOBAL;
4223                         break;
4224
4225                 case ARG_NO_BLOCK:
4226                         arg_no_block = true;
4227                         break;
4228
4229                 case ARG_NO_LEGEND:
4230                         arg_no_legend = true;
4231                         break;
4232
4233                 case ARG_NO_PAGER:
4234                         arg_no_pager = true;
4235                         break;
4236
4237                 case ARG_NO_WALL:
4238                         arg_no_wall = true;
4239                         break;
4240
4241                 case ARG_ORDER:
4242                         arg_dot = DOT_ORDER;
4243                         break;
4244
4245                 case ARG_REQUIRE:
4246                         arg_dot = DOT_REQUIRE;
4247                         break;
4248
4249                 case ARG_ROOT:
4250                         arg_root = optarg;
4251                         break;
4252
4253                 case ARG_FULL:
4254                         arg_full = true;
4255                         break;
4256
4257                 case ARG_FAILED:
4258                         arg_failed = true;
4259                         break;
4260
4261                 case 'q':
4262                         arg_quiet = true;
4263                         break;
4264
4265                 case 'f':
4266                         arg_force = true;
4267                         break;
4268
4269                 case ARG_NO_RELOAD:
4270                         arg_no_reload = true;
4271                         break;
4272
4273                 case ARG_KILL_WHO:
4274                         arg_kill_who = optarg;
4275                         break;
4276
4277                 case ARG_KILL_MODE:
4278                         arg_kill_mode = optarg;
4279                         break;
4280
4281                 case 's':
4282                         if ((arg_signal = signal_from_string_try_harder(optarg)) < 0) {
4283                                 log_error("Failed to parse signal string %s.", optarg);
4284                                 return -EINVAL;
4285                         }
4286                         break;
4287
4288                 case ARG_NO_ASK_PASSWORD:
4289                         arg_ask_password = false;
4290                         break;
4291
4292                 case 'P':
4293                         arg_transport = TRANSPORT_POLKIT;
4294                         break;
4295
4296                 case 'H':
4297                         arg_transport = TRANSPORT_SSH;
4298                         arg_host = optarg;
4299                         break;
4300
4301                 case ARG_RUNTIME:
4302                         arg_runtime = true;
4303                         break;
4304
4305                 case '?':
4306                         return -EINVAL;
4307
4308                 default:
4309                         log_error("Unknown option code %c", c);
4310                         return -EINVAL;
4311                 }
4312         }
4313
4314         if (arg_transport != TRANSPORT_NORMAL && arg_scope != UNIT_FILE_SYSTEM) {
4315                 log_error("Cannot access user instance remotely.");
4316                 return -EINVAL;
4317         }
4318
4319         return 1;
4320 }
4321
4322 static int halt_parse_argv(int argc, char *argv[]) {
4323
4324         enum {
4325                 ARG_HELP = 0x100,
4326                 ARG_HALT,
4327                 ARG_REBOOT,
4328                 ARG_NO_WALL
4329         };
4330
4331         static const struct option options[] = {
4332                 { "help",      no_argument,       NULL, ARG_HELP    },
4333                 { "halt",      no_argument,       NULL, ARG_HALT    },
4334                 { "poweroff",  no_argument,       NULL, 'p'         },
4335                 { "reboot",    no_argument,       NULL, ARG_REBOOT  },
4336                 { "force",     no_argument,       NULL, 'f'         },
4337                 { "wtmp-only", no_argument,       NULL, 'w'         },
4338                 { "no-wtmp",   no_argument,       NULL, 'd'         },
4339                 { "no-sync",   no_argument,       NULL, 'n'         },
4340                 { "no-wall",   no_argument,       NULL, ARG_NO_WALL },
4341                 { NULL,        0,                 NULL, 0           }
4342         };
4343
4344         int c, runlevel;
4345
4346         assert(argc >= 0);
4347         assert(argv);
4348
4349         if (utmp_get_runlevel(&runlevel, NULL) >= 0)
4350                 if (runlevel == '0' || runlevel == '6')
4351                         arg_immediate = true;
4352
4353         while ((c = getopt_long(argc, argv, "pfwdnih", options, NULL)) >= 0) {
4354                 switch (c) {
4355
4356                 case ARG_HELP:
4357                         halt_help();
4358                         return 0;
4359
4360                 case ARG_HALT:
4361                         arg_action = ACTION_HALT;
4362                         break;
4363
4364                 case 'p':
4365                         if (arg_action != ACTION_REBOOT)
4366                                 arg_action = ACTION_POWEROFF;
4367                         break;
4368
4369                 case ARG_REBOOT:
4370                         arg_action = ACTION_REBOOT;
4371                         break;
4372
4373                 case 'f':
4374                         arg_immediate = true;
4375                         break;
4376
4377                 case 'w':
4378                         arg_dry = true;
4379                         break;
4380
4381                 case 'd':
4382                         arg_no_wtmp = true;
4383                         break;
4384
4385                 case 'n':
4386                         arg_no_sync = true;
4387                         break;
4388
4389                 case ARG_NO_WALL:
4390                         arg_no_wall = true;
4391                         break;
4392
4393                 case 'i':
4394                 case 'h':
4395                         /* Compatibility nops */
4396                         break;
4397
4398                 case '?':
4399                         return -EINVAL;
4400
4401                 default:
4402                         log_error("Unknown option code %c", c);
4403                         return -EINVAL;
4404                 }
4405         }
4406
4407         if (optind < argc) {
4408                 log_error("Too many arguments.");
4409                 return -EINVAL;
4410         }
4411
4412         return 1;
4413 }
4414
4415 static int parse_time_spec(const char *t, usec_t *_u) {
4416         assert(t);
4417         assert(_u);
4418
4419         if (streq(t, "now"))
4420                 *_u = 0;
4421         else if (!strchr(t, ':')) {
4422                 uint64_t u;
4423
4424                 if (safe_atou64(t, &u) < 0)
4425                         return -EINVAL;
4426
4427                 *_u = now(CLOCK_REALTIME) + USEC_PER_MINUTE * u;
4428         } else {
4429                 char *e = NULL;
4430                 long hour, minute;
4431                 struct tm tm;
4432                 time_t s;
4433                 usec_t n;
4434
4435                 errno = 0;
4436                 hour = strtol(t, &e, 10);
4437                 if (errno != 0 || *e != ':' || hour < 0 || hour > 23)
4438                         return -EINVAL;
4439
4440                 minute = strtol(e+1, &e, 10);
4441                 if (errno != 0 || *e != 0 || minute < 0 || minute > 59)
4442                         return -EINVAL;
4443
4444                 n = now(CLOCK_REALTIME);
4445                 s = (time_t) (n / USEC_PER_SEC);
4446
4447                 zero(tm);
4448                 assert_se(localtime_r(&s, &tm));
4449
4450                 tm.tm_hour = (int) hour;
4451                 tm.tm_min = (int) minute;
4452                 tm.tm_sec = 0;
4453
4454                 assert_se(s = mktime(&tm));
4455
4456                 *_u = (usec_t) s * USEC_PER_SEC;
4457
4458                 while (*_u <= n)
4459                         *_u += USEC_PER_DAY;
4460         }
4461
4462         return 0;
4463 }
4464
4465 static int shutdown_parse_argv(int argc, char *argv[]) {
4466
4467         enum {
4468                 ARG_HELP = 0x100,
4469                 ARG_NO_WALL
4470         };
4471
4472         static const struct option options[] = {
4473                 { "help",      no_argument,       NULL, ARG_HELP    },
4474                 { "halt",      no_argument,       NULL, 'H'         },
4475                 { "poweroff",  no_argument,       NULL, 'P'         },
4476                 { "reboot",    no_argument,       NULL, 'r'         },
4477                 { "no-wall",   no_argument,       NULL, ARG_NO_WALL },
4478                 { NULL,        0,                 NULL, 0           }
4479         };
4480
4481         int c, r;
4482
4483         assert(argc >= 0);
4484         assert(argv);
4485
4486         while ((c = getopt_long(argc, argv, "HPrhkt:afFc", options, NULL)) >= 0) {
4487                 switch (c) {
4488
4489                 case ARG_HELP:
4490                         shutdown_help();
4491                         return 0;
4492
4493                 case 'H':
4494                         arg_action = ACTION_HALT;
4495                         break;
4496
4497                 case 'P':
4498                         arg_action = ACTION_POWEROFF;
4499                         break;
4500
4501                 case 'r':
4502                         if (kexec_loaded())
4503                                 arg_action = ACTION_KEXEC;
4504                         else
4505                                 arg_action = ACTION_REBOOT;
4506                         break;
4507
4508                 case 'h':
4509                         if (arg_action != ACTION_HALT)
4510                                 arg_action = ACTION_POWEROFF;
4511                         break;
4512
4513                 case 'k':
4514                         arg_dry = true;
4515                         break;
4516
4517                 case ARG_NO_WALL:
4518                         arg_no_wall = true;
4519                         break;
4520
4521                 case 't':
4522                 case 'a':
4523                         /* Compatibility nops */
4524                         break;
4525
4526                 case 'c':
4527                         arg_action = ACTION_CANCEL_SHUTDOWN;
4528                         break;
4529
4530                 case '?':
4531                         return -EINVAL;
4532
4533                 default:
4534                         log_error("Unknown option code %c", c);
4535                         return -EINVAL;
4536                 }
4537         }
4538
4539         if (argc > optind) {
4540                 if ((r = parse_time_spec(argv[optind], &arg_when)) < 0) {
4541                         log_error("Failed to parse time specification: %s", argv[optind]);
4542                         return r;
4543                 }
4544         } else
4545                 arg_when = now(CLOCK_REALTIME) + USEC_PER_MINUTE;
4546
4547         /* We skip the time argument */
4548         if (argc > optind + 1)
4549                 arg_wall = argv + optind + 1;
4550
4551         optind = argc;
4552
4553         return 1;
4554 }
4555
4556 static int telinit_parse_argv(int argc, char *argv[]) {
4557
4558         enum {
4559                 ARG_HELP = 0x100,
4560                 ARG_NO_WALL
4561         };
4562
4563         static const struct option options[] = {
4564                 { "help",      no_argument,       NULL, ARG_HELP    },
4565                 { "no-wall",   no_argument,       NULL, ARG_NO_WALL },
4566                 { NULL,        0,                 NULL, 0           }
4567         };
4568
4569         static const struct {
4570                 char from;
4571                 enum action to;
4572         } table[] = {
4573                 { '0', ACTION_POWEROFF },
4574                 { '6', ACTION_REBOOT },
4575                 { '1', ACTION_RESCUE },
4576                 { '2', ACTION_RUNLEVEL2 },
4577                 { '3', ACTION_RUNLEVEL3 },
4578                 { '4', ACTION_RUNLEVEL4 },
4579                 { '5', ACTION_RUNLEVEL5 },
4580                 { 's', ACTION_RESCUE },
4581                 { 'S', ACTION_RESCUE },
4582                 { 'q', ACTION_RELOAD },
4583                 { 'Q', ACTION_RELOAD },
4584                 { 'u', ACTION_REEXEC },
4585                 { 'U', ACTION_REEXEC }
4586         };
4587
4588         unsigned i;
4589         int c;
4590
4591         assert(argc >= 0);
4592         assert(argv);
4593
4594         while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) {
4595                 switch (c) {
4596
4597                 case ARG_HELP:
4598                         telinit_help();
4599                         return 0;
4600
4601                 case ARG_NO_WALL:
4602                         arg_no_wall = true;
4603                         break;
4604
4605                 case '?':
4606                         return -EINVAL;
4607
4608                 default:
4609                         log_error("Unknown option code %c", c);
4610                         return -EINVAL;
4611                 }
4612         }
4613
4614         if (optind >= argc) {
4615                 telinit_help();
4616                 return -EINVAL;
4617         }
4618
4619         if (optind + 1 < argc) {
4620                 log_error("Too many arguments.");
4621                 return -EINVAL;
4622         }
4623
4624         if (strlen(argv[optind]) != 1) {
4625                 log_error("Expected single character argument.");
4626                 return -EINVAL;
4627         }
4628
4629         for (i = 0; i < ELEMENTSOF(table); i++)
4630                 if (table[i].from == argv[optind][0])
4631                         break;
4632
4633         if (i >= ELEMENTSOF(table)) {
4634                 log_error("Unknown command %s.", argv[optind]);
4635                 return -EINVAL;
4636         }
4637
4638         arg_action = table[i].to;
4639
4640         optind ++;
4641
4642         return 1;
4643 }
4644
4645 static int runlevel_parse_argv(int argc, char *argv[]) {
4646
4647         enum {
4648                 ARG_HELP = 0x100,
4649         };
4650
4651         static const struct option options[] = {
4652                 { "help",      no_argument,       NULL, ARG_HELP    },
4653                 { NULL,        0,                 NULL, 0           }
4654         };
4655
4656         int c;
4657
4658         assert(argc >= 0);
4659         assert(argv);
4660
4661         while ((c = getopt_long(argc, argv, "", options, NULL)) >= 0) {
4662                 switch (c) {
4663
4664                 case ARG_HELP:
4665                         runlevel_help();
4666                         return 0;
4667
4668                 case '?':
4669                         return -EINVAL;
4670
4671                 default:
4672                         log_error("Unknown option code %c", c);
4673                         return -EINVAL;
4674                 }
4675         }
4676
4677         if (optind < argc) {
4678                 log_error("Too many arguments.");
4679                 return -EINVAL;
4680         }
4681
4682         return 1;
4683 }
4684
4685 static int parse_argv(int argc, char *argv[]) {
4686         assert(argc >= 0);
4687         assert(argv);
4688
4689         if (program_invocation_short_name) {
4690
4691                 if (strstr(program_invocation_short_name, "halt")) {
4692                         arg_action = ACTION_HALT;
4693                         return halt_parse_argv(argc, argv);
4694                 } else if (strstr(program_invocation_short_name, "poweroff")) {
4695                         arg_action = ACTION_POWEROFF;
4696                         return halt_parse_argv(argc, argv);
4697                 } else if (strstr(program_invocation_short_name, "reboot")) {
4698                         if (kexec_loaded())
4699                                 arg_action = ACTION_KEXEC;
4700                         else
4701                                 arg_action = ACTION_REBOOT;
4702                         return halt_parse_argv(argc, argv);
4703                 } else if (strstr(program_invocation_short_name, "shutdown")) {
4704                         arg_action = ACTION_POWEROFF;
4705                         return shutdown_parse_argv(argc, argv);
4706                 } else if (strstr(program_invocation_short_name, "init")) {
4707
4708                         if (sd_booted() > 0) {
4709                                 arg_action = ACTION_INVALID;
4710                                 return telinit_parse_argv(argc, argv);
4711                         } else {
4712                                 /* Hmm, so some other init system is
4713                                  * running, we need to forward this
4714                                  * request to it. For now we simply
4715                                  * guess that it is Upstart. */
4716
4717                                 execv("/lib/upstart/telinit", argv);
4718
4719                                 log_error("Couldn't find an alternative telinit implementation to spawn.");
4720                                 return -EIO;
4721                         }
4722
4723                 } else if (strstr(program_invocation_short_name, "runlevel")) {
4724                         arg_action = ACTION_RUNLEVEL;
4725                         return runlevel_parse_argv(argc, argv);
4726                 }
4727         }
4728
4729         arg_action = ACTION_SYSTEMCTL;
4730         return systemctl_parse_argv(argc, argv);
4731 }
4732
4733 static int action_to_runlevel(void) {
4734
4735         static const char table[_ACTION_MAX] = {
4736                 [ACTION_HALT] =      '0',
4737                 [ACTION_POWEROFF] =  '0',
4738                 [ACTION_REBOOT] =    '6',
4739                 [ACTION_RUNLEVEL2] = '2',
4740                 [ACTION_RUNLEVEL3] = '3',
4741                 [ACTION_RUNLEVEL4] = '4',
4742                 [ACTION_RUNLEVEL5] = '5',
4743                 [ACTION_RESCUE] =    '1'
4744         };
4745
4746         assert(arg_action < _ACTION_MAX);
4747
4748         return table[arg_action];
4749 }
4750
4751 static int talk_upstart(void) {
4752         DBusMessage *m = NULL, *reply = NULL;
4753         DBusError error;
4754         int previous, rl, r;
4755         char
4756                 env1_buf[] = "RUNLEVEL=X",
4757                 env2_buf[] = "PREVLEVEL=X";
4758         char *env1 = env1_buf, *env2 = env2_buf;
4759         const char *emit = "runlevel";
4760         dbus_bool_t b_false = FALSE;
4761         DBusMessageIter iter, sub;
4762         DBusConnection *bus;
4763
4764         dbus_error_init(&error);
4765
4766         if (!(rl = action_to_runlevel()))
4767                 return 0;
4768
4769         if (utmp_get_runlevel(&previous, NULL) < 0)
4770                 previous = 'N';
4771
4772         if (!(bus = dbus_connection_open_private("unix:abstract=/com/ubuntu/upstart", &error))) {
4773                 if (dbus_error_has_name(&error, DBUS_ERROR_NO_SERVER)) {
4774                         r = 0;
4775                         goto finish;
4776                 }
4777
4778                 log_error("Failed to connect to Upstart bus: %s", bus_error_message(&error));
4779                 r = -EIO;
4780                 goto finish;
4781         }
4782
4783         if ((r = bus_check_peercred(bus)) < 0) {
4784                 log_error("Failed to verify owner of bus.");
4785                 goto finish;
4786         }
4787
4788         if (!(m = dbus_message_new_method_call(
4789                               "com.ubuntu.Upstart",
4790                               "/com/ubuntu/Upstart",
4791                               "com.ubuntu.Upstart0_6",
4792                               "EmitEvent"))) {
4793
4794                 log_error("Could not allocate message.");
4795                 r = -ENOMEM;
4796                 goto finish;
4797         }
4798
4799         dbus_message_iter_init_append(m, &iter);
4800
4801         env1_buf[sizeof(env1_buf)-2] = rl;
4802         env2_buf[sizeof(env2_buf)-2] = previous;
4803
4804         if (!dbus_message_iter_append_basic(&iter, DBUS_TYPE_STRING, &emit) ||
4805             !dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY, "s", &sub) ||
4806             !dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &env1) ||
4807             !dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &env2) ||
4808             !dbus_message_iter_close_container(&iter, &sub) ||
4809             !dbus_message_iter_append_basic(&iter, DBUS_TYPE_BOOLEAN, &b_false)) {
4810                 log_error("Could not append arguments to message.");
4811                 r = -ENOMEM;
4812                 goto finish;
4813         }
4814
4815         if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
4816
4817                 if (error_is_no_service(&error)) {
4818                         r = -EADDRNOTAVAIL;
4819                         goto finish;
4820                 }
4821
4822                 log_error("Failed to issue method call: %s", bus_error_message(&error));
4823                 r = -EIO;
4824                 goto finish;
4825         }
4826
4827         r = 1;
4828
4829 finish:
4830         if (m)
4831                 dbus_message_unref(m);
4832
4833         if (reply)
4834                 dbus_message_unref(reply);
4835
4836         if (bus) {
4837                 dbus_connection_flush(bus);
4838                 dbus_connection_close(bus);
4839                 dbus_connection_unref(bus);
4840         }
4841
4842         dbus_error_free(&error);
4843
4844         return r;
4845 }
4846
4847 static int talk_initctl(void) {
4848         struct init_request request;
4849         int r, fd;
4850         char rl;
4851
4852         if (!(rl = action_to_runlevel()))
4853                 return 0;
4854
4855         zero(request);
4856         request.magic = INIT_MAGIC;
4857         request.sleeptime = 0;
4858         request.cmd = INIT_CMD_RUNLVL;
4859         request.runlevel = rl;
4860
4861         if ((fd = open(INIT_FIFO, O_WRONLY|O_NDELAY|O_CLOEXEC|O_NOCTTY)) < 0) {
4862
4863                 if (errno == ENOENT)
4864                         return 0;
4865
4866                 log_error("Failed to open "INIT_FIFO": %m");
4867                 return -errno;
4868         }
4869
4870         errno = 0;
4871         r = loop_write(fd, &request, sizeof(request), false) != sizeof(request);
4872         close_nointr_nofail(fd);
4873
4874         if (r < 0) {
4875                 log_error("Failed to write to "INIT_FIFO": %m");
4876                 return errno ? -errno : -EIO;
4877         }
4878
4879         return 1;
4880 }
4881
4882 static int systemctl_main(DBusConnection *bus, int argc, char *argv[], DBusError *error) {
4883
4884         static const struct {
4885                 const char* verb;
4886                 const enum {
4887                         MORE,
4888                         LESS,
4889                         EQUAL
4890                 } argc_cmp;
4891                 const int argc;
4892                 int (* const dispatch)(DBusConnection *bus, char **args);
4893         } verbs[] = {
4894                 { "list-units",            LESS,  1, list_units        },
4895                 { "list-unit-files",       EQUAL, 1, list_unit_files   },
4896                 { "list-jobs",             EQUAL, 1, list_jobs         },
4897                 { "clear-jobs",            EQUAL, 1, daemon_reload     },
4898                 { "load",                  MORE,  2, load_unit         },
4899                 { "cancel",                MORE,  2, cancel_job        },
4900                 { "start",                 MORE,  2, start_unit        },
4901                 { "stop",                  MORE,  2, start_unit        },
4902                 { "condstop",              MORE,  2, start_unit        }, /* For compatibility with ALTLinux */
4903                 { "reload",                MORE,  2, start_unit        },
4904                 { "restart",               MORE,  2, start_unit        },
4905                 { "try-restart",           MORE,  2, start_unit        },
4906                 { "reload-or-restart",     MORE,  2, start_unit        },
4907                 { "reload-or-try-restart", MORE,  2, start_unit        },
4908                 { "force-reload",          MORE,  2, start_unit        }, /* For compatibility with SysV */
4909                 { "condreload",            MORE,  2, start_unit        }, /* For compatibility with ALTLinux */
4910                 { "condrestart",           MORE,  2, start_unit        }, /* For compatibility with RH */
4911                 { "isolate",               EQUAL, 2, start_unit        },
4912                 { "kill",                  MORE,  2, kill_unit         },
4913                 { "is-active",             MORE,  2, check_unit        },
4914                 { "check",                 MORE,  2, check_unit        },
4915                 { "show",                  MORE,  1, show              },
4916                 { "status",                MORE,  2, show              },
4917                 { "dump",                  EQUAL, 1, dump              },
4918                 { "dot",                   EQUAL, 1, dot               },
4919                 { "snapshot",              LESS,  2, snapshot          },
4920                 { "delete",                MORE,  2, delete_snapshot   },
4921                 { "daemon-reload",         EQUAL, 1, daemon_reload     },
4922                 { "daemon-reexec",         EQUAL, 1, daemon_reload     },
4923                 { "show-environment",      EQUAL, 1, show_enviroment   },
4924                 { "set-environment",       MORE,  2, set_environment   },
4925                 { "unset-environment",     MORE,  2, set_environment   },
4926                 { "halt",                  EQUAL, 1, start_special     },
4927                 { "poweroff",              EQUAL, 1, start_special     },
4928                 { "reboot",                EQUAL, 1, start_special     },
4929                 { "kexec",                 EQUAL, 1, start_special     },
4930                 { "default",               EQUAL, 1, start_special     },
4931                 { "rescue",                EQUAL, 1, start_special     },
4932                 { "emergency",             EQUAL, 1, start_special     },
4933                 { "exit",                  EQUAL, 1, start_special     },
4934                 { "reset-failed",          MORE,  1, reset_failed      },
4935                 { "enable",                MORE,  2, enable_unit       },
4936                 { "disable",               MORE,  2, enable_unit       },
4937                 { "is-enabled",            MORE,  2, unit_is_enabled   },
4938                 { "reenable",              MORE,  2, enable_unit       },
4939                 { "preset",                MORE,  2, enable_unit       },
4940                 { "mask",                  MORE,  2, enable_unit       },
4941                 { "unmask",                MORE,  2, enable_unit       },
4942                 { "link",                  MORE,  2, enable_unit       }
4943         };
4944
4945         int left;
4946         unsigned i;
4947
4948         assert(argc >= 0);
4949         assert(argv);
4950         assert(error);
4951
4952         left = argc - optind;
4953
4954         if (left <= 0)
4955                 /* Special rule: no arguments means "list-units" */
4956                 i = 0;
4957         else {
4958                 if (streq(argv[optind], "help")) {
4959                         systemctl_help();
4960                         return 0;
4961                 }
4962
4963                 for (i = 0; i < ELEMENTSOF(verbs); i++)
4964                         if (streq(argv[optind], verbs[i].verb))
4965                                 break;
4966
4967                 if (i >= ELEMENTSOF(verbs)) {
4968                         log_error("Unknown operation %s", argv[optind]);
4969                         return -EINVAL;
4970                 }
4971         }
4972
4973         switch (verbs[i].argc_cmp) {
4974
4975         case EQUAL:
4976                 if (left != verbs[i].argc) {
4977                         log_error("Invalid number of arguments.");
4978                         return -EINVAL;
4979                 }
4980
4981                 break;
4982
4983         case MORE:
4984                 if (left < verbs[i].argc) {
4985                         log_error("Too few arguments.");
4986                         return -EINVAL;
4987                 }
4988
4989                 break;
4990
4991         case LESS:
4992                 if (left > verbs[i].argc) {
4993                         log_error("Too many arguments.");
4994                         return -EINVAL;
4995                 }
4996
4997                 break;
4998
4999         default:
5000                 assert_not_reached("Unknown comparison operator.");
5001         }
5002
5003         /* Require a bus connection for all operations but
5004          * enable/disable */
5005         if (!streq(verbs[i].verb, "enable") &&
5006             !streq(verbs[i].verb, "disable") &&
5007             !streq(verbs[i].verb, "is-enabled") &&
5008             !streq(verbs[i].verb, "list-unit-files") &&
5009             !streq(verbs[i].verb, "reenable") &&
5010             !streq(verbs[i].verb, "preset") &&
5011             !streq(verbs[i].verb, "mask") &&
5012             !streq(verbs[i].verb, "unmask") &&
5013             !streq(verbs[i].verb, "link")) {
5014
5015                 if (running_in_chroot() > 0) {
5016                         log_info("Running in chroot, ignoring request.");
5017                         return 0;
5018                 }
5019
5020                 if (!bus) {
5021                         log_error("Failed to get D-Bus connection: %s",
5022                                   dbus_error_is_set(error) ? error->message : "No connection to service manager.");
5023                         return -EIO;
5024                 }
5025
5026         } else {
5027
5028                 if (!bus && !avoid_bus()) {
5029                         log_error("Failed to get D-Bus connection: %s",
5030                                   dbus_error_is_set(error) ? error->message : "No connection to service manager.");
5031                         return -EIO;
5032                 }
5033         }
5034
5035         return verbs[i].dispatch(bus, argv + optind);
5036 }
5037
5038 static int send_shutdownd(usec_t t, char mode, bool dry_run, bool warn, const char *message) {
5039         int fd = -1;
5040         struct msghdr msghdr;
5041         struct iovec iovec;
5042         union sockaddr_union sockaddr;
5043         struct shutdownd_command c;
5044
5045         zero(c);
5046         c.elapse = t;
5047         c.mode = mode;
5048         c.dry_run = dry_run;
5049         c.warn_wall = warn;
5050
5051         if (message)
5052                 strncpy(c.wall_message, message, sizeof(c.wall_message));
5053
5054         if ((fd = socket(AF_UNIX, SOCK_DGRAM|SOCK_CLOEXEC, 0)) < 0)
5055                 return -errno;
5056
5057         zero(sockaddr);
5058         sockaddr.sa.sa_family = AF_UNIX;
5059         sockaddr.un.sun_path[0] = 0;
5060         strncpy(sockaddr.un.sun_path, "/run/systemd/shutdownd", sizeof(sockaddr.un.sun_path));
5061
5062         zero(iovec);
5063         iovec.iov_base = (char*) &c;
5064         iovec.iov_len = sizeof(c);
5065
5066         zero(msghdr);
5067         msghdr.msg_name = &sockaddr;
5068         msghdr.msg_namelen = offsetof(struct sockaddr_un, sun_path) + sizeof("/run/systemd/shutdownd") - 1;
5069
5070         msghdr.msg_iov = &iovec;
5071         msghdr.msg_iovlen = 1;
5072
5073         if (sendmsg(fd, &msghdr, MSG_NOSIGNAL) < 0) {
5074                 close_nointr_nofail(fd);
5075                 return -errno;
5076         }
5077
5078         close_nointr_nofail(fd);
5079         return 0;
5080 }
5081
5082 static int reload_with_fallback(DBusConnection *bus) {
5083
5084         if (bus) {
5085                 /* First, try systemd via D-Bus. */
5086                 if (daemon_reload(bus, NULL) >= 0)
5087                         return 0;
5088         }
5089
5090         /* Nothing else worked, so let's try signals */
5091         assert(arg_action == ACTION_RELOAD || arg_action == ACTION_REEXEC);
5092
5093         if (kill(1, arg_action == ACTION_RELOAD ? SIGHUP : SIGTERM) < 0) {
5094                 log_error("kill() failed: %m");
5095                 return -errno;
5096         }
5097
5098         return 0;
5099 }
5100
5101 static int start_with_fallback(DBusConnection *bus) {
5102
5103         if (bus) {
5104                 /* First, try systemd via D-Bus. */
5105                 if (start_unit(bus, NULL) >= 0)
5106                         goto done;
5107         }
5108
5109         /* Hmm, talking to systemd via D-Bus didn't work. Then
5110          * let's try to talk to Upstart via D-Bus. */
5111         if (talk_upstart() > 0)
5112                 goto done;
5113
5114         /* Nothing else worked, so let's try
5115          * /dev/initctl */
5116         if (talk_initctl() > 0)
5117                 goto done;
5118
5119         log_error("Failed to talk to init daemon.");
5120         return -EIO;
5121
5122 done:
5123         warn_wall(arg_action);
5124         return 0;
5125 }
5126
5127 static int halt_main(DBusConnection *bus) {
5128         int r;
5129
5130         if (geteuid() != 0) {
5131                 log_error("Must be root.");
5132                 return -EPERM;
5133         }
5134
5135         if (arg_when > 0) {
5136                 char *m;
5137                 char date[FORMAT_TIMESTAMP_MAX];
5138
5139                 m = strv_join(arg_wall, " ");
5140                 r = send_shutdownd(arg_when,
5141                                    arg_action == ACTION_HALT     ? 'H' :
5142                                    arg_action == ACTION_POWEROFF ? 'P' :
5143                                                                    'r',
5144                                    arg_dry,
5145                                    !arg_no_wall,
5146                                    m);
5147                 free(m);
5148
5149                 if (r < 0)
5150                         log_warning("Failed to talk to shutdownd, proceeding with immediate shutdown: %s", strerror(-r));
5151                 else {
5152                         log_info("Shutdown scheduled for %s, use 'shutdown -c' to cancel.",
5153                                  format_timestamp(date, sizeof(date), arg_when));
5154                         return 0;
5155                 }
5156         }
5157
5158         if (!arg_dry && !arg_immediate)
5159                 return start_with_fallback(bus);
5160
5161         if (!arg_no_wtmp) {
5162                 if (sd_booted() > 0)
5163                         log_debug("Not writing utmp record, assuming that systemd-update-utmp is used.");
5164                 else if ((r = utmp_put_shutdown()) < 0)
5165                         log_warning("Failed to write utmp record: %s", strerror(-r));
5166         }
5167
5168         if (!arg_no_sync)
5169                 sync();
5170
5171         if (arg_dry)
5172                 return 0;
5173
5174         /* Make sure C-A-D is handled by the kernel from this
5175          * point on... */
5176         reboot(RB_ENABLE_CAD);
5177
5178         switch (arg_action) {
5179
5180         case ACTION_HALT:
5181                 log_info("Halting.");
5182                 reboot(RB_HALT_SYSTEM);
5183                 break;
5184
5185         case ACTION_POWEROFF:
5186                 log_info("Powering off.");
5187                 reboot(RB_POWER_OFF);
5188                 break;
5189
5190         case ACTION_REBOOT:
5191                 log_info("Rebooting.");
5192                 reboot(RB_AUTOBOOT);
5193                 break;
5194
5195         default:
5196                 assert_not_reached("Unknown halt action.");
5197         }
5198
5199         /* We should never reach this. */
5200         return -ENOSYS;
5201 }
5202
5203 static int runlevel_main(void) {
5204         int r, runlevel, previous;
5205
5206         r = utmp_get_runlevel(&runlevel, &previous);
5207         if (r < 0) {
5208                 puts("unknown");
5209                 return r;
5210         }
5211
5212         printf("%c %c\n",
5213                previous <= 0 ? 'N' : previous,
5214                runlevel <= 0 ? 'N' : runlevel);
5215
5216         return 0;
5217 }
5218
5219 int main(int argc, char*argv[]) {
5220         int r, retval = EXIT_FAILURE;
5221         DBusConnection *bus = NULL;
5222         DBusError error;
5223
5224         dbus_error_init(&error);
5225
5226         log_parse_environment();
5227         log_open();
5228
5229         if ((r = parse_argv(argc, argv)) < 0)
5230                 goto finish;
5231         else if (r == 0) {
5232                 retval = EXIT_SUCCESS;
5233                 goto finish;
5234         }
5235
5236         /* /sbin/runlevel doesn't need to communicate via D-Bus, so
5237          * let's shortcut this */
5238         if (arg_action == ACTION_RUNLEVEL) {
5239                 r = runlevel_main();
5240                 retval = r < 0 ? EXIT_FAILURE : r;
5241                 goto finish;
5242         }
5243
5244         if (running_in_chroot() > 0 && arg_action != ACTION_SYSTEMCTL) {
5245                 log_info("Running in chroot, ignoring request.");
5246                 retval = 0;
5247                 goto finish;
5248         }
5249
5250         if (!avoid_bus()) {
5251                 if (arg_transport == TRANSPORT_NORMAL)
5252                         bus_connect(arg_scope == UNIT_FILE_SYSTEM ? DBUS_BUS_SYSTEM : DBUS_BUS_SESSION, &bus, &private_bus, &error);
5253                 else if (arg_transport == TRANSPORT_POLKIT) {
5254                         bus_connect_system_polkit(&bus, &error);
5255                         private_bus = false;
5256                 } else if (arg_transport == TRANSPORT_SSH) {
5257                         bus_connect_system_ssh(NULL, arg_host, &bus, &error);
5258                         private_bus = false;
5259                 } else
5260                         assert_not_reached("Uh, invalid transport...");
5261         }
5262
5263         switch (arg_action) {
5264
5265         case ACTION_SYSTEMCTL:
5266                 r = systemctl_main(bus, argc, argv, &error);
5267                 break;
5268
5269         case ACTION_HALT:
5270         case ACTION_POWEROFF:
5271         case ACTION_REBOOT:
5272         case ACTION_KEXEC:
5273                 r = halt_main(bus);
5274                 break;
5275
5276         case ACTION_RUNLEVEL2:
5277         case ACTION_RUNLEVEL3:
5278         case ACTION_RUNLEVEL4:
5279         case ACTION_RUNLEVEL5:
5280         case ACTION_RESCUE:
5281         case ACTION_EMERGENCY:
5282         case ACTION_DEFAULT:
5283                 r = start_with_fallback(bus);
5284                 break;
5285
5286         case ACTION_RELOAD:
5287         case ACTION_REEXEC:
5288                 r = reload_with_fallback(bus);
5289                 break;
5290
5291         case ACTION_CANCEL_SHUTDOWN:
5292                 r = send_shutdownd(0, 0, false, false, NULL);
5293                 break;
5294
5295         case ACTION_INVALID:
5296         case ACTION_RUNLEVEL:
5297         default:
5298                 assert_not_reached("Unknown action");
5299         }
5300
5301         retval = r < 0 ? EXIT_FAILURE : r;
5302
5303 finish:
5304         if (bus) {
5305                 dbus_connection_flush(bus);
5306                 dbus_connection_close(bus);
5307                 dbus_connection_unref(bus);
5308         }
5309
5310         dbus_error_free(&error);
5311
5312         dbus_shutdown();
5313
5314         strv_free(arg_property);
5315
5316         pager_close();
5317         agent_close();
5318
5319         return retval;
5320 }