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
  62 static const char *arg_type = NULL;
  63 static char **arg_property = NULL;
  64 static bool arg_all = false;
  65 static const char *arg_job_mode = "replace";
  66 static UnitFileScope arg_scope = UNIT_FILE_SYSTEM;
  67 static bool arg_immediate = false;
  68 static bool arg_no_block = false;
  69 static bool arg_no_legend = false;
  70 static bool arg_no_pager = false;
  71 static bool arg_no_wtmp = false;
  72 static bool arg_no_sync = false;
  73 static bool arg_no_wall = false;
  74 static bool arg_no_reload = false;
  75 static bool arg_dry = false;
  76 static bool arg_quiet = false;
  77 static bool arg_full = false;
  78 static bool arg_force = false;
  79 static bool arg_ask_password = false;
  80 static bool arg_failed = false;
  81 static bool arg_runtime = false;
  82 static char **arg_wall = NULL;
  83 static const char *arg_kill_who = NULL;
  84 static const char *arg_kill_mode = NULL;
  85 static int arg_signal = SIGTERM;
  86 static const char *arg_root = NULL;
  87 static usec_t arg_when = 0;
  88 static enum action {
  89         ACTION_INVALID,
  90         ACTION_SYSTEMCTL,
  91         ACTION_HALT,
  92         ACTION_POWEROFF,
  93         ACTION_REBOOT,
  94         ACTION_KEXEC,
  95         ACTION_EXIT,
  96         ACTION_RUNLEVEL2,
  97         ACTION_RUNLEVEL3,
  98         ACTION_RUNLEVEL4,
  99         ACTION_RUNLEVEL5,
 100         ACTION_RESCUE,
 101         ACTION_EMERGENCY,
 102         ACTION_DEFAULT,
 103         ACTION_RELOAD,
 104         ACTION_REEXEC,
 105         ACTION_RUNLEVEL,
 106         ACTION_CANCEL_SHUTDOWN,
 107         _ACTION_MAX
 108 } arg_action = ACTION_SYSTEMCTL;
 109 static enum dot {
 110         DOT_ALL,
 111         DOT_ORDER,
 112         DOT_REQUIRE
 113 } arg_dot = DOT_ALL;
 114 static enum transport {
 115         TRANSPORT_NORMAL,
 116         TRANSPORT_SSH,
 117         TRANSPORT_POLKIT
 118 } arg_transport = TRANSPORT_NORMAL;
 119 static const char *arg_host = NULL;
 120
 121 static bool private_bus = false;
 122
 123 static int daemon_reload(DBusConnection *bus, char **args);
 124
 125 static bool on_tty(void) {
 126         static int t = -1;
 127
 128         /* Note that this is invoked relatively early, before we start
 129          * the pager. That means the value we return reflects whether
 130          * we originally were started on a tty, not if we currently
 131          * are. But this is intended, since we want colour and so on
 132          * when run in our own pager. */
 133
 134         if (_unlikely_(t < 0))
 135                 t = isatty(STDOUT_FILENO) > 0;
 136
 137         return t;
 138 }
 139
 140 static void pager_open_if_enabled(void) {
 141
 142         /* Cache result before we open the pager */
 143         on_tty();
 144
 145         if (arg_no_pager)
 146                 return;
 147
 148         pager_open();
 149 }
 150
 151 static void agent_open_if_enabled(void) {
 152
 153         /* Open the password agent as a child process if necessary */
 154
 155         if (!arg_ask_password)
 156                 return;
 157
 158         if (arg_scope != UNIT_FILE_SYSTEM)
 159                 return;
 160
 161         agent_open();
 162 }
 163
 164 static const char *ansi_highlight(bool b) {
 165
 166         if (!on_tty())
 167                 return "";
 168
 169         return b ? ANSI_HIGHLIGHT_ON : ANSI_HIGHLIGHT_OFF;
 170 }
 171
 172 static const char *ansi_highlight_green(bool b) {
 173
 174         if (!on_tty())
 175                 return "";
 176
 177         return b ? ANSI_HIGHLIGHT_GREEN_ON : ANSI_HIGHLIGHT_OFF;
 178 }
 179
 180 static bool error_is_no_service(const DBusError *error) {
 181         assert(error);
 182
 183         if (!dbus_error_is_set(error))
 184                 return false;
 185
 186         if (dbus_error_has_name(error, DBUS_ERROR_NAME_HAS_NO_OWNER))
 187                 return true;
 188
 189         if (dbus_error_has_name(error, DBUS_ERROR_SERVICE_UNKNOWN))
 190                 return true;
 191
 192         return startswith(error->name, "org.freedesktop.DBus.Error.Spawn.");
 193 }
 194
 195 static int translate_bus_error_to_exit_status(int r, const DBusError *error) {
 196         assert(error);
 197
 198         if (!dbus_error_is_set(error))
 199                 return r;
 200
 201         if (dbus_error_has_name(error, DBUS_ERROR_ACCESS_DENIED) ||
 202             dbus_error_has_name(error, BUS_ERROR_ONLY_BY_DEPENDENCY) ||
 203             dbus_error_has_name(error, BUS_ERROR_NO_ISOLATION) ||
 204             dbus_error_has_name(error, BUS_ERROR_TRANSACTION_IS_DESTRUCTIVE))
 205                 return EXIT_NOPERMISSION;
 206
 207         if (dbus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT))
 208                 return EXIT_NOTINSTALLED;
 209
 210         if (dbus_error_has_name(error, BUS_ERROR_JOB_TYPE_NOT_APPLICABLE) ||
 211             dbus_error_has_name(error, BUS_ERROR_NOT_SUPPORTED))
 212                 return EXIT_NOTIMPLEMENTED;
 213
 214         if (dbus_error_has_name(error, BUS_ERROR_LOAD_FAILED))
 215                 return EXIT_NOTCONFIGURED;
 216
 217         if (r != 0)
 218                 return r;
 219
 220         return EXIT_FAILURE;
 221 }
 222
 223 static void warn_wall(enum action action) {
 224         static const char *table[_ACTION_MAX] = {
 225                 [ACTION_HALT]      = "The system is going down for system halt NOW!",
 226                 [ACTION_REBOOT]    = "The system is going down for reboot NOW!",
 227                 [ACTION_POWEROFF]  = "The system is going down for power-off NOW!",
 228                 [ACTION_KEXEC]     = "The system is going down for kexec reboot NOW!",
 229                 [ACTION_RESCUE]    = "The system is going down to rescue mode NOW!",
 230                 [ACTION_EMERGENCY] = "The system is going down to emergency mode NOW!"
 231         };
 232
 233         if (arg_no_wall)
 234                 return;
 235
 236         if (arg_wall) {
 237                 char *p;
 238
 239                 if (!(p = strv_join(arg_wall, " "))) {
 240                         log_error("Failed to join strings.");
 241                         return;
 242                 }
 243
 244                 if (*p) {
 245                         utmp_wall(p, NULL);
 246                         free(p);
 247                         return;
 248                 }
 249
 250                 free(p);
 251         }
 252
 253         if (!table[action])
 254                 return;
 255
 256         utmp_wall(table[action], NULL);
 257 }
 258
 259 static bool avoid_bus(void) {
 260
 261         if (running_in_chroot() > 0)
 262                 return true;
 263
 264         if (sd_booted() <= 0)
 265                 return true;
 266
 267         if (!isempty(arg_root))
 268                 return true;
 269
 270         if (arg_scope == UNIT_FILE_GLOBAL)
 271                 return true;
 272
 273         return false;
 274 }
 275
 276 struct unit_info {
 277         const char *id;
 278         const char *description;
 279         const char *load_state;
 280         const char *active_state;
 281         const char *sub_state;
 282         const char *following;
 283         const char *unit_path;
 284         uint32_t job_id;
 285         const char *job_type;
 286         const char *job_path;
 287 };
 288
 289 static int compare_unit_info(const void *a, const void *b) {
 290         const char *d1, *d2;
 291         const struct unit_info *u = a, *v = b;
 292
 293         d1 = strrchr(u->id, '.');
 294         d2 = strrchr(v->id, '.');
 295
 296         if (d1 && d2) {
 297                 int r;
 298
 299                 if ((r = strcasecmp(d1, d2)) != 0)
 300                         return r;
 301         }
 302
 303         return strcasecmp(u->id, v->id);
 304 }
 305
 306 static bool output_show_unit(const struct unit_info *u) {
 307         const char *dot;
 308
 309         if (arg_failed)
 310                 return streq(u->active_state, "failed");
 311
 312         return (!arg_type || ((dot = strrchr(u->id, '.')) &&
 313                               streq(dot+1, arg_type))) &&
 314                 (arg_all || !(streq(u->active_state, "inactive") || u->following[0]) || u->job_id > 0);
 315 }
 316
 317 static void output_units_list(const struct unit_info *unit_infos, unsigned c) {
 318         unsigned id_len, max_id_len, active_len, sub_len, job_len, desc_len, n_shown = 0;
 319         const struct unit_info *u;
 320
 321         max_id_len = sizeof("UNIT")-1;
 322         active_len = sizeof("ACTIVE")-1;
 323         sub_len = sizeof("SUB")-1;
 324         job_len = sizeof("JOB")-1;
 325         desc_len = 0;
 326
 327         for (u = unit_infos; u < unit_infos + c; u++) {
 328                 if (!output_show_unit(u))
 329                         continue;
 330
 331                 max_id_len = MAX(max_id_len, strlen(u->id));
 332                 active_len = MAX(active_len, strlen(u->active_state));
 333                 sub_len = MAX(sub_len, strlen(u->sub_state));
 334                 if (u->job_id != 0)
 335                         job_len = MAX(job_len, strlen(u->job_type));
 336         }
 337
 338         if (!arg_full) {
 339                 unsigned basic_len;
 340                 id_len = MIN(max_id_len, 25);
 341                 basic_len = 5 + id_len + 6 + active_len + sub_len + job_len;
 342                 if (basic_len < (unsigned) columns()) {
 343                         unsigned extra_len, incr;
 344                         extra_len = columns() - basic_len;
 345                         /* Either UNIT already got 25, or is fully satisfied.
 346                          * Grant up to 25 to DESC now. */
 347                         incr = MIN(extra_len, 25);
 348                         desc_len += incr;
 349                         extra_len -= incr;
 350                         /* split the remaining space between UNIT and DESC,
 351                          * but do not give UNIT more than it needs. */
 352                         if (extra_len > 0) {
 353                                 incr = MIN(extra_len / 2, max_id_len - id_len);
 354                                 id_len += incr;
 355                                 desc_len += extra_len - incr;
 356                         }
 357                 }
 358         } else
 359                 id_len = max_id_len;
 360
 361         if (!arg_no_legend) {
 362                 printf("%-*s %-6s %-*s %-*s %-*s ", id_len, "UNIT", "LOAD",
 363                        active_len, "ACTIVE", sub_len, "SUB", job_len, "JOB");
 364                 if (!arg_full && arg_no_pager)
 365                         printf("%.*s\n", desc_len, "DESCRIPTION");
 366                 else
 367                         printf("%s\n", "DESCRIPTION");
 368         }
 369
 370         for (u = unit_infos; u < unit_infos + c; u++) {
 371                 char *e;
 372                 const char *on_loaded, *off_loaded;
 373                 const char *on_active, *off_active;
 374
 375                 if (!output_show_unit(u))
 376                         continue;
 377
 378                 n_shown++;
 379
 380                 if (!streq(u->load_state, "loaded") &&
 381                     !streq(u->load_state, "banned")) {
 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         assert(bus);
 626
 627         pager_open_if_enabled();
 628
 629         if (avoid_bus()) {
 630                 Hashmap *h;
 631                 UnitFileList *u;
 632                 Iterator i;
 633
 634                 h = hashmap_new(string_hash_func, string_compare_func);
 635                 if (!h) {
 636                         log_error("Out of memory");
 637                         return -ENOMEM;
 638                 }
 639
 640                 r = unit_file_get_list(arg_scope, arg_root, h);
 641                 if (r < 0) {
 642                         unit_file_list_free(h);
 643                         log_error("Failed to get unit file list: %s", strerror(-r));
 644                         return r;
 645                 }
 646
 647                 n_units = hashmap_size(h);
 648                 units = new(UnitFileList, n_units);
 649                 if (!units) {
 650                         unit_file_list_free(h);
 651                         log_error("Out of memory");
 652                         return -ENOMEM;
 653                 }
 654
 655                 HASHMAP_FOREACH(u, h, i) {
 656                         memcpy(units + c++, u, sizeof(UnitFileList));
 657                         free(u);
 658                 }
 659
 660                 hashmap_free(h);
 661         } else {
 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, "failed") ||
2067             streq_ptr(i->load_state, "banned")) {
2068                 on = ansi_highlight(true);
2069                 off = ansi_highlight(false);
2070         } else
2071                 on = off = "";
2072
2073         if (i->load_error)
2074                 printf("\t  Loaded: %s%s%s (Reason: %s)\n", on, strna(i->load_state), off, i->load_error);
2075         else if (i->path && i->unit_file_state)
2076                 printf("\t  Loaded: %s%s%s (%s; %s)\n", on, strna(i->load_state), off, i->path, i->unit_file_state);
2077         else if (i->path)
2078                 printf("\t  Loaded: %s%s%s (%s)\n", on, strna(i->load_state), off, i->path);
2079         else
2080                 printf("\t  Loaded: %s%s%s\n", on, strna(i->load_state), off);
2081
2082         ss = streq_ptr(i->active_state, i->sub_state) ? NULL : i->sub_state;
2083
2084         if (streq_ptr(i->active_state, "failed")) {
2085                 on = ansi_highlight(true);
2086                 off = ansi_highlight(false);
2087         } else if (streq_ptr(i->active_state, "active") || streq_ptr(i->active_state, "reloading")) {
2088                 on = ansi_highlight_green(true);
2089                 off = ansi_highlight_green(false);
2090         } else
2091                 on = off = "";
2092
2093         if (ss)
2094                 printf("\t  Active: %s%s (%s)%s",
2095                        on,
2096                        strna(i->active_state),
2097                        ss,
2098                        off);
2099         else
2100                 printf("\t  Active: %s%s%s",
2101                        on,
2102                        strna(i->active_state),
2103                        off);
2104
2105         timestamp = (streq_ptr(i->active_state, "active")      ||
2106                      streq_ptr(i->active_state, "reloading"))   ? i->active_enter_timestamp :
2107                     (streq_ptr(i->active_state, "inactive")    ||
2108                      streq_ptr(i->active_state, "failed"))      ? i->inactive_enter_timestamp :
2109                     streq_ptr(i->active_state, "activating")    ? i->inactive_exit_timestamp :
2110                                                                   i->active_exit_timestamp;
2111
2112         s1 = format_timestamp_pretty(since1, sizeof(since1), timestamp);
2113         s2 = format_timestamp(since2, sizeof(since2), timestamp);
2114
2115         if (s1)
2116                 printf(" since %s; %s\n", s2, s1);
2117         else if (s2)
2118                 printf(" since %s\n", s2);
2119         else
2120                 printf("\n");
2121
2122         if (!i->condition_result && i->condition_timestamp > 0) {
2123                 s1 = format_timestamp_pretty(since1, sizeof(since1), i->condition_timestamp);
2124                 s2 = format_timestamp(since2, sizeof(since2), i->condition_timestamp);
2125
2126                 if (s1)
2127                         printf("\t          start condition failed at %s; %s\n", s2, s1);
2128                 else if (s2)
2129                         printf("\t          start condition failed at %s\n", s2);
2130         }
2131
2132         if (i->sysfs_path)
2133                 printf("\t  Device: %s\n", i->sysfs_path);
2134         if (i->where)
2135                 printf("\t   Where: %s\n", i->where);
2136         if (i->what)
2137                 printf("\t    What: %s\n", i->what);
2138
2139         if (i->accept)
2140                 printf("\tAccepted: %u; Connected: %u\n", i->n_accepted, i->n_connections);
2141
2142         LIST_FOREACH(exec, p, i->exec) {
2143                 char *t;
2144                 bool good;
2145
2146                 /* Only show exited processes here */
2147                 if (p->code == 0)
2148                         continue;
2149
2150                 t = strv_join(p->argv, " ");
2151                 printf("\t Process: %u %s=%s ", p->pid, p->name, strna(t));
2152                 free(t);
2153
2154 #ifdef HAVE_SYSV_COMPAT
2155                 if (i->is_sysv)
2156                         good = is_clean_exit_lsb(p->code, p->status);
2157                 else
2158 #endif
2159                         good = is_clean_exit(p->code, p->status);
2160
2161                 if (!good) {
2162                         on = ansi_highlight(true);
2163                         off = ansi_highlight(false);
2164                 } else
2165                         on = off = "";
2166
2167                 printf("%s(code=%s, ", on, sigchld_code_to_string(p->code));
2168
2169                 if (p->code == CLD_EXITED) {
2170                         const char *c;
2171
2172                         printf("status=%i", p->status);
2173
2174 #ifdef HAVE_SYSV_COMPAT
2175                         if ((c = exit_status_to_string(p->status, i->is_sysv ? EXIT_STATUS_LSB : EXIT_STATUS_SYSTEMD)))
2176 #else
2177                         if ((c = exit_status_to_string(p->status, EXIT_STATUS_SYSTEMD)))
2178 #endif
2179                                 printf("/%s", c);
2180
2181                 } else
2182                         printf("signal=%s", signal_to_string(p->status));
2183
2184                 printf(")%s\n", off);
2185
2186                 if (i->main_pid == p->pid &&
2187                     i->start_timestamp == p->start_timestamp &&
2188                     i->exit_timestamp == p->start_timestamp)
2189                         /* Let's not show this twice */
2190                         i->main_pid = 0;
2191
2192                 if (p->pid == i->control_pid)
2193                         i->control_pid = 0;
2194         }
2195
2196         if (i->main_pid > 0 || i->control_pid > 0) {
2197                 printf("\t");
2198
2199                 if (i->main_pid > 0) {
2200                         printf("Main PID: %u", (unsigned) i->main_pid);
2201
2202                         if (i->running) {
2203                                 char *t = NULL;
2204                                 get_process_comm(i->main_pid, &t);
2205                                 if (t) {
2206                                         printf(" (%s)", t);
2207                                         free(t);
2208                                 }
2209                         } else if (i->exit_code > 0) {
2210                                 printf(" (code=%s, ", sigchld_code_to_string(i->exit_code));
2211
2212                                 if (i->exit_code == CLD_EXITED) {
2213                                         const char *c;
2214
2215                                         printf("status=%i", i->exit_status);
2216
2217 #ifdef HAVE_SYSV_COMPAT
2218                                         if ((c = exit_status_to_string(i->exit_status, i->is_sysv ? EXIT_STATUS_LSB : EXIT_STATUS_SYSTEMD)))
2219 #else
2220                                         if ((c = exit_status_to_string(i->exit_status, EXIT_STATUS_SYSTEMD)))
2221 #endif
2222                                                 printf("/%s", c);
2223
2224                                 } else
2225                                         printf("signal=%s", signal_to_string(i->exit_status));
2226                                 printf(")");
2227                         }
2228                 }
2229
2230                 if (i->main_pid > 0 && i->control_pid > 0)
2231                         printf(";");
2232
2233                 if (i->control_pid > 0) {
2234                         char *t = NULL;
2235
2236                         printf(" Control: %u", (unsigned) i->control_pid);
2237
2238                         get_process_comm(i->control_pid, &t);
2239                         if (t) {
2240                                 printf(" (%s)", t);
2241                                 free(t);
2242                         }
2243                 }
2244
2245                 printf("\n");
2246         }
2247
2248         if (i->status_text)
2249                 printf("\t  Status: \"%s\"\n", i->status_text);
2250
2251         if (i->default_control_group) {
2252                 unsigned c;
2253
2254                 printf("\t  CGroup: %s\n", i->default_control_group);
2255
2256                 if (arg_transport != TRANSPORT_SSH) {
2257                         if ((c = columns()) > 18)
2258                                 c -= 18;
2259                         else
2260                                 c = 0;
2261
2262                         show_cgroup_by_path(i->default_control_group, "\t\t  ", c);
2263                 }
2264         }
2265
2266         if (i->need_daemon_reload)
2267                 printf("\n%sWarning:%s Unit file changed on disk, 'systemctl %s daemon-reload' recommended.\n",
2268                        ansi_highlight(true),
2269                        ansi_highlight(false),
2270                        arg_scope == UNIT_FILE_SYSTEM ? "--system" : "--user");
2271 }
2272
2273 static int status_property(const char *name, DBusMessageIter *iter, UnitStatusInfo *i) {
2274
2275         assert(name);
2276         assert(iter);
2277         assert(i);
2278
2279         switch (dbus_message_iter_get_arg_type(iter)) {
2280
2281         case DBUS_TYPE_STRING: {
2282                 const char *s;
2283
2284                 dbus_message_iter_get_basic(iter, &s);
2285
2286                 if (!isempty(s)) {
2287                         if (streq(name, "Id"))
2288                                 i->id = s;
2289                         else if (streq(name, "LoadState"))
2290                                 i->load_state = s;
2291                         else if (streq(name, "ActiveState"))
2292                                 i->active_state = s;
2293                         else if (streq(name, "SubState"))
2294                                 i->sub_state = s;
2295                         else if (streq(name, "Description"))
2296                                 i->description = s;
2297                         else if (streq(name, "FragmentPath"))
2298                                 i->path = s;
2299 #ifdef HAVE_SYSV_COMPAT
2300                         else if (streq(name, "SysVPath")) {
2301                                 i->is_sysv = true;
2302                                 i->path = s;
2303                         }
2304 #endif
2305                         else if (streq(name, "DefaultControlGroup"))
2306                                 i->default_control_group = s;
2307                         else if (streq(name, "StatusText"))
2308                                 i->status_text = s;
2309                         else if (streq(name, "SysFSPath"))
2310                                 i->sysfs_path = s;
2311                         else if (streq(name, "Where"))
2312                                 i->where = s;
2313                         else if (streq(name, "What"))
2314                                 i->what = s;
2315                         else if (streq(name, "Following"))
2316                                 i->following = s;
2317                         else if (streq(name, "UnitFileState"))
2318                                 i->unit_file_state = s;
2319                 }
2320
2321                 break;
2322         }
2323
2324         case DBUS_TYPE_BOOLEAN: {
2325                 dbus_bool_t b;
2326
2327                 dbus_message_iter_get_basic(iter, &b);
2328
2329                 if (streq(name, "Accept"))
2330                         i->accept = b;
2331                 else if (streq(name, "NeedDaemonReload"))
2332                         i->need_daemon_reload = b;
2333                 else if (streq(name, "ConditionResult"))
2334                         i->condition_result = b;
2335
2336                 break;
2337         }
2338
2339         case DBUS_TYPE_UINT32: {
2340                 uint32_t u;
2341
2342                 dbus_message_iter_get_basic(iter, &u);
2343
2344                 if (streq(name, "MainPID")) {
2345                         if (u > 0) {
2346                                 i->main_pid = (pid_t) u;
2347                                 i->running = true;
2348                         }
2349                 } else if (streq(name, "ControlPID"))
2350                         i->control_pid = (pid_t) u;
2351                 else if (streq(name, "ExecMainPID")) {
2352                         if (u > 0)
2353                                 i->main_pid = (pid_t) u;
2354                 } else if (streq(name, "NAccepted"))
2355                         i->n_accepted = u;
2356                 else if (streq(name, "NConnections"))
2357                         i->n_connections = u;
2358
2359                 break;
2360         }
2361
2362         case DBUS_TYPE_INT32: {
2363                 int32_t j;
2364
2365                 dbus_message_iter_get_basic(iter, &j);
2366
2367                 if (streq(name, "ExecMainCode"))
2368                         i->exit_code = (int) j;
2369                 else if (streq(name, "ExecMainStatus"))
2370                         i->exit_status = (int) j;
2371
2372                 break;
2373         }
2374
2375         case DBUS_TYPE_UINT64: {
2376                 uint64_t u;
2377
2378                 dbus_message_iter_get_basic(iter, &u);
2379
2380                 if (streq(name, "ExecMainStartTimestamp"))
2381                         i->start_timestamp = (usec_t) u;
2382                 else if (streq(name, "ExecMainExitTimestamp"))
2383                         i->exit_timestamp = (usec_t) u;
2384                 else if (streq(name, "ActiveEnterTimestamp"))
2385                         i->active_enter_timestamp = (usec_t) u;
2386                 else if (streq(name, "InactiveEnterTimestamp"))
2387                         i->inactive_enter_timestamp = (usec_t) u;
2388                 else if (streq(name, "InactiveExitTimestamp"))
2389                         i->inactive_exit_timestamp = (usec_t) u;
2390                 else if (streq(name, "ActiveExitTimestamp"))
2391                         i->active_exit_timestamp = (usec_t) u;
2392                 else if (streq(name, "ConditionTimestamp"))
2393                         i->condition_timestamp = (usec_t) u;
2394
2395                 break;
2396         }
2397
2398         case DBUS_TYPE_ARRAY: {
2399
2400                 if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT &&
2401                     startswith(name, "Exec")) {
2402                         DBusMessageIter sub;
2403
2404                         dbus_message_iter_recurse(iter, &sub);
2405                         while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2406                                 ExecStatusInfo *info;
2407                                 int r;
2408
2409                                 if (!(info = new0(ExecStatusInfo, 1)))
2410                                         return -ENOMEM;
2411
2412                                 if (!(info->name = strdup(name))) {
2413                                         free(info);
2414                                         return -ENOMEM;
2415                                 }
2416
2417                                 if ((r = exec_status_info_deserialize(&sub, info)) < 0) {
2418                                         free(info);
2419                                         return r;
2420                                 }
2421
2422                                 LIST_PREPEND(ExecStatusInfo, exec, i->exec, info);
2423
2424                                 dbus_message_iter_next(&sub);
2425                         }
2426                 }
2427
2428                 break;
2429         }
2430
2431         case DBUS_TYPE_STRUCT: {
2432
2433                 if (streq(name, "LoadError")) {
2434                         DBusMessageIter sub;
2435                         const char *n, *message;
2436                         int r;
2437
2438                         dbus_message_iter_recurse(iter, &sub);
2439
2440                         r = bus_iter_get_basic_and_next(&sub, DBUS_TYPE_STRING, &n, true);
2441                         if (r < 0)
2442                                 return r;
2443
2444                         r = bus_iter_get_basic_and_next(&sub, DBUS_TYPE_STRING, &message, false);
2445                         if (r < 0)
2446                                 return r;
2447
2448                         if (!isempty(message))
2449                                 i->load_error = message;
2450                 }
2451
2452                 break;
2453         }
2454         }
2455
2456         return 0;
2457 }
2458
2459 static int print_property(const char *name, DBusMessageIter *iter) {
2460         assert(name);
2461         assert(iter);
2462
2463         /* This is a low-level property printer, see
2464          * print_status_info() for the nicer output */
2465
2466         if (arg_property && !strv_find(arg_property, name))
2467                 return 0;
2468
2469         switch (dbus_message_iter_get_arg_type(iter)) {
2470
2471         case DBUS_TYPE_STRUCT: {
2472                 DBusMessageIter sub;
2473                 dbus_message_iter_recurse(iter, &sub);
2474
2475                 if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_UINT32 && streq(name, "Job")) {
2476                         uint32_t u;
2477
2478                         dbus_message_iter_get_basic(&sub, &u);
2479
2480                         if (u)
2481                                 printf("%s=%u\n", name, (unsigned) u);
2482                         else if (arg_all)
2483                                 printf("%s=\n", name);
2484
2485                         return 0;
2486                 } else if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING && streq(name, "Unit")) {
2487                         const char *s;
2488
2489                         dbus_message_iter_get_basic(&sub, &s);
2490
2491                         if (arg_all || s[0])
2492                                 printf("%s=%s\n", name, s);
2493
2494                         return 0;
2495                 } else if (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRING && streq(name, "LoadError")) {
2496                         const char *a = NULL, *b = NULL;
2497
2498                         if (bus_iter_get_basic_and_next(&sub, DBUS_TYPE_STRING, &a, true) >= 0)
2499                                 bus_iter_get_basic_and_next(&sub, DBUS_TYPE_STRING, &b, false);
2500
2501                         if (arg_all || !isempty(a) || !isempty(b))
2502                                 printf("%s=%s \"%s\"\n", name, strempty(a), strempty(b));
2503
2504                         return 0;
2505                 }
2506
2507                 break;
2508         }
2509
2510         case DBUS_TYPE_ARRAY:
2511
2512                 if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "EnvironmentFiles")) {
2513                         DBusMessageIter sub, sub2;
2514
2515                         dbus_message_iter_recurse(iter, &sub);
2516                         while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2517                                 const char *path;
2518                                 dbus_bool_t ignore;
2519
2520                                 dbus_message_iter_recurse(&sub, &sub2);
2521
2522                                 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, true) >= 0 &&
2523                                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_BOOLEAN, &ignore, false) >= 0)
2524                                         printf("EnvironmentFile=%s (ignore_errors=%s)\n", path, yes_no(ignore));
2525
2526                                 dbus_message_iter_next(&sub);
2527                         }
2528
2529                         return 0;
2530
2531                 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Paths")) {
2532                         DBusMessageIter sub, sub2;
2533
2534                         dbus_message_iter_recurse(iter, &sub);
2535                         while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2536                                 const char *type, *path;
2537
2538                                 dbus_message_iter_recurse(&sub, &sub2);
2539
2540                                 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &type, true) >= 0 &&
2541                                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &path, false) >= 0)
2542                                         printf("%s=%s\n", type, path);
2543
2544                                 dbus_message_iter_next(&sub);
2545                         }
2546
2547                         return 0;
2548
2549                 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "Timers")) {
2550                         DBusMessageIter sub, sub2;
2551
2552                         dbus_message_iter_recurse(iter, &sub);
2553                         while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2554                                 const char *base;
2555                                 uint64_t value, next_elapse;
2556
2557                                 dbus_message_iter_recurse(&sub, &sub2);
2558
2559                                 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &base, true) >= 0 &&
2560                                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &value, true) >= 0 &&
2561                                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_UINT64, &next_elapse, false) >= 0) {
2562                                         char timespan1[FORMAT_TIMESPAN_MAX], timespan2[FORMAT_TIMESPAN_MAX];
2563
2564                                         printf("%s={ value=%s ; next_elapse=%s }\n",
2565                                                base,
2566                                                format_timespan(timespan1, sizeof(timespan1), value),
2567                                                format_timespan(timespan2, sizeof(timespan2), next_elapse));
2568                                 }
2569
2570                                 dbus_message_iter_next(&sub);
2571                         }
2572
2573                         return 0;
2574
2575                 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && streq(name, "ControlGroupAttributes")) {
2576                         DBusMessageIter sub, sub2;
2577
2578                         dbus_message_iter_recurse(iter, &sub);
2579                         while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2580                                 const char *controller, *attr, *value;
2581
2582                                 dbus_message_iter_recurse(&sub, &sub2);
2583
2584                                 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &controller, true) >= 0 &&
2585                                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &attr, true) >= 0 &&
2586                                     bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &value, false) >= 0) {
2587
2588                                         printf("ControlGroupAttribute={ controller=%s ; attribute=%s ; value=\"%s\" }\n",
2589                                                controller,
2590                                                attr,
2591                                                value);
2592                                 }
2593
2594                                 dbus_message_iter_next(&sub);
2595                         }
2596
2597                         return 0;
2598
2599                 } else if (dbus_message_iter_get_element_type(iter) == DBUS_TYPE_STRUCT && startswith(name, "Exec")) {
2600                         DBusMessageIter sub;
2601
2602                         dbus_message_iter_recurse(iter, &sub);
2603                         while (dbus_message_iter_get_arg_type(&sub) == DBUS_TYPE_STRUCT) {
2604                                 ExecStatusInfo info;
2605
2606                                 zero(info);
2607                                 if (exec_status_info_deserialize(&sub, &info) >= 0) {
2608                                         char timestamp1[FORMAT_TIMESTAMP_MAX], timestamp2[FORMAT_TIMESTAMP_MAX];
2609                                         char *t;
2610
2611                                         t = strv_join(info.argv, " ");
2612
2613                                         printf("%s={ path=%s ; argv[]=%s ; ignore_errors=%s ; start_time=[%s] ; stop_time=[%s] ; pid=%u ; code=%s ; status=%i%s%s }\n",
2614                                                name,
2615                                                strna(info.path),
2616                                                strna(t),
2617                                                yes_no(info.ignore),
2618                                                strna(format_timestamp(timestamp1, sizeof(timestamp1), info.start_timestamp)),
2619                                                strna(format_timestamp(timestamp2, sizeof(timestamp2), info.exit_timestamp)),
2620                                                (unsigned) info. pid,
2621                                                sigchld_code_to_string(info.code),
2622                                                info.status,
2623                                                info.code == CLD_EXITED ? "" : "/",
2624                                                strempty(info.code == CLD_EXITED ? NULL : signal_to_string(info.status)));
2625
2626                                         free(t);
2627                                 }
2628
2629                                 free(info.path);
2630                                 strv_free(info.argv);
2631
2632                                 dbus_message_iter_next(&sub);
2633                         }
2634
2635                         return 0;
2636                 }
2637
2638                 break;
2639         }
2640
2641         if (generic_print_property(name, iter, arg_all) > 0)
2642                 return 0;
2643
2644         if (arg_all)
2645                 printf("%s=[unprintable]\n", name);
2646
2647         return 0;
2648 }
2649
2650 static int show_one(const char *verb, DBusConnection *bus, const char *path, bool show_properties, bool *new_line) {
2651         DBusMessage *m = NULL, *reply = NULL;
2652         const char *interface = "";
2653         int r;
2654         DBusError error;
2655         DBusMessageIter iter, sub, sub2, sub3;
2656         UnitStatusInfo info;
2657         ExecStatusInfo *p;
2658
2659         assert(bus);
2660         assert(path);
2661         assert(new_line);
2662
2663         zero(info);
2664         dbus_error_init(&error);
2665
2666         if (!(m = dbus_message_new_method_call(
2667                               "org.freedesktop.systemd1",
2668                               path,
2669                               "org.freedesktop.DBus.Properties",
2670                               "GetAll"))) {
2671                 log_error("Could not allocate message.");
2672                 r = -ENOMEM;
2673                 goto finish;
2674         }
2675
2676         if (!dbus_message_append_args(m,
2677                                       DBUS_TYPE_STRING, &interface,
2678                                       DBUS_TYPE_INVALID)) {
2679                 log_error("Could not append arguments to message.");
2680                 r = -ENOMEM;
2681                 goto finish;
2682         }
2683
2684         if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2685                 log_error("Failed to issue method call: %s", bus_error_message(&error));
2686                 r = -EIO;
2687                 goto finish;
2688         }
2689
2690         if (!dbus_message_iter_init(reply, &iter) ||
2691             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
2692             dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_DICT_ENTRY)  {
2693                 log_error("Failed to parse reply.");
2694                 r = -EIO;
2695                 goto finish;
2696         }
2697
2698         dbus_message_iter_recurse(&iter, &sub);
2699
2700         if (*new_line)
2701                 printf("\n");
2702
2703         *new_line = true;
2704
2705         while (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_INVALID) {
2706                 const char *name;
2707
2708                 if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_DICT_ENTRY) {
2709                         log_error("Failed to parse reply.");
2710                         r = -EIO;
2711                         goto finish;
2712                 }
2713
2714                 dbus_message_iter_recurse(&sub, &sub2);
2715
2716                 if (bus_iter_get_basic_and_next(&sub2, DBUS_TYPE_STRING, &name, true) < 0) {
2717                         log_error("Failed to parse reply.");
2718                         r = -EIO;
2719                         goto finish;
2720                 }
2721
2722                 if (dbus_message_iter_get_arg_type(&sub2) != DBUS_TYPE_VARIANT)  {
2723                         log_error("Failed to parse reply.");
2724                         r = -EIO;
2725                         goto finish;
2726                 }
2727
2728                 dbus_message_iter_recurse(&sub2, &sub3);
2729
2730                 if (show_properties)
2731                         r = print_property(name, &sub3);
2732                 else
2733                         r = status_property(name, &sub3, &info);
2734
2735                 if (r < 0) {
2736                         log_error("Failed to parse reply.");
2737                         r = -EIO;
2738                         goto finish;
2739                 }
2740
2741                 dbus_message_iter_next(&sub);
2742         }
2743
2744         r = 0;
2745
2746         if (!show_properties)
2747                 print_status_info(&info);
2748
2749         if (!streq_ptr(info.active_state, "active") &&
2750             !streq_ptr(info.active_state, "reloading") &&
2751             streq(verb, "status"))
2752                 /* According to LSB: "program not running" */
2753                 r = 3;
2754
2755         while ((p = info.exec)) {
2756                 LIST_REMOVE(ExecStatusInfo, exec, info.exec, p);
2757                 exec_status_info_free(p);
2758         }
2759
2760 finish:
2761         if (m)
2762                 dbus_message_unref(m);
2763
2764         if (reply)
2765                 dbus_message_unref(reply);
2766
2767         dbus_error_free(&error);
2768
2769         return r;
2770 }
2771
2772 static int show(DBusConnection *bus, char **args) {
2773         DBusMessage *m = NULL, *reply = NULL;
2774         int r, ret = 0;
2775         DBusError error;
2776         bool show_properties, new_line = false;
2777         char **name;
2778
2779         assert(bus);
2780         assert(args);
2781
2782         dbus_error_init(&error);
2783
2784         show_properties = !streq(args[0], "status");
2785
2786         if (show_properties)
2787                 pager_open_if_enabled();
2788
2789         if (show_properties && strv_length(args) <= 1) {
2790                 /* If not argument is specified inspect the manager
2791                  * itself */
2792
2793                 ret = show_one(args[0], bus, "/org/freedesktop/systemd1", show_properties, &new_line);
2794                 goto finish;
2795         }
2796
2797         STRV_FOREACH(name, args+1) {
2798                 const char *path = NULL;
2799                 uint32_t id;
2800
2801                 if (safe_atou32(*name, &id) < 0) {
2802
2803                         /* Interpret as unit name */
2804
2805                         if (!(m = dbus_message_new_method_call(
2806                                               "org.freedesktop.systemd1",
2807                                               "/org/freedesktop/systemd1",
2808                                               "org.freedesktop.systemd1.Manager",
2809                                               "LoadUnit"))) {
2810                                 log_error("Could not allocate message.");
2811                                 ret = -ENOMEM;
2812                                 goto finish;
2813                         }
2814
2815                         if (!dbus_message_append_args(m,
2816                                                       DBUS_TYPE_STRING, name,
2817                                                       DBUS_TYPE_INVALID)) {
2818                                 log_error("Could not append arguments to message.");
2819                                 ret = -ENOMEM;
2820                                 goto finish;
2821                         }
2822
2823                         if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2824
2825                                 if (!dbus_error_has_name(&error, DBUS_ERROR_ACCESS_DENIED)) {
2826                                         log_error("Failed to issue method call: %s", bus_error_message(&error));
2827                                         ret = -EIO;
2828                                         goto finish;
2829                                 }
2830
2831                                 dbus_error_free(&error);
2832
2833                                 dbus_message_unref(m);
2834                                 if (!(m = dbus_message_new_method_call(
2835                                                       "org.freedesktop.systemd1",
2836                                                       "/org/freedesktop/systemd1",
2837                                                       "org.freedesktop.systemd1.Manager",
2838                                                       "GetUnit"))) {
2839                                         log_error("Could not allocate message.");
2840                                         ret = -ENOMEM;
2841                                         goto finish;
2842                                 }
2843
2844                                 if (!dbus_message_append_args(m,
2845                                                               DBUS_TYPE_STRING, name,
2846                                                               DBUS_TYPE_INVALID)) {
2847                                         log_error("Could not append arguments to message.");
2848                                         ret = -ENOMEM;
2849                                         goto finish;
2850                                 }
2851
2852                                 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2853                                         log_error("Failed to issue method call: %s", bus_error_message(&error));
2854
2855                                         if (dbus_error_has_name(&error, BUS_ERROR_NO_SUCH_UNIT))
2856                                                 ret = 4; /* According to LSB: "program or service status is unknown" */
2857                                         else
2858                                                 ret = -EIO;
2859                                         goto finish;
2860                                 }
2861                         }
2862
2863                 } else if (show_properties) {
2864
2865                         /* Interpret as job id */
2866
2867                         if (!(m = dbus_message_new_method_call(
2868                                               "org.freedesktop.systemd1",
2869                                               "/org/freedesktop/systemd1",
2870                                               "org.freedesktop.systemd1.Manager",
2871                                               "GetJob"))) {
2872                                 log_error("Could not allocate message.");
2873                                 ret = -ENOMEM;
2874                                 goto finish;
2875                         }
2876
2877                         if (!dbus_message_append_args(m,
2878                                                       DBUS_TYPE_UINT32, &id,
2879                                                       DBUS_TYPE_INVALID)) {
2880                                 log_error("Could not append arguments to message.");
2881                                 ret = -ENOMEM;
2882                                 goto finish;
2883                         }
2884
2885                         if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2886                                 log_error("Failed to issue method call: %s", bus_error_message(&error));
2887                                 ret = -EIO;
2888                                 goto finish;
2889                         }
2890                 } else {
2891
2892                         /* Interpret as PID */
2893
2894                         if (!(m = dbus_message_new_method_call(
2895                                               "org.freedesktop.systemd1",
2896                                               "/org/freedesktop/systemd1",
2897                                               "org.freedesktop.systemd1.Manager",
2898                                               "GetUnitByPID"))) {
2899                                 log_error("Could not allocate message.");
2900                                 ret = -ENOMEM;
2901                                 goto finish;
2902                         }
2903
2904                         if (!dbus_message_append_args(m,
2905                                                       DBUS_TYPE_UINT32, &id,
2906                                                       DBUS_TYPE_INVALID)) {
2907                                 log_error("Could not append arguments to message.");
2908                                 ret = -ENOMEM;
2909                                 goto finish;
2910                         }
2911
2912                         if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2913                                 log_error("Failed to issue method call: %s", bus_error_message(&error));
2914                                 ret = -EIO;
2915                                 goto finish;
2916                         }
2917                 }
2918
2919                 if (!dbus_message_get_args(reply, &error,
2920                                            DBUS_TYPE_OBJECT_PATH, &path,
2921                                            DBUS_TYPE_INVALID)) {
2922                         log_error("Failed to parse reply: %s", bus_error_message(&error));
2923                         ret = -EIO;
2924                         goto finish;
2925                 }
2926
2927                 if ((r = show_one(args[0], bus, path, show_properties, &new_line)) != 0)
2928                         ret = r;
2929
2930                 dbus_message_unref(m);
2931                 dbus_message_unref(reply);
2932                 m = reply = NULL;
2933         }
2934
2935 finish:
2936         if (m)
2937                 dbus_message_unref(m);
2938
2939         if (reply)
2940                 dbus_message_unref(reply);
2941
2942         dbus_error_free(&error);
2943
2944         return ret;
2945 }
2946
2947 static int dump(DBusConnection *bus, char **args) {
2948         DBusMessage *m = NULL, *reply = NULL;
2949         DBusError error;
2950         int r;
2951         const char *text;
2952
2953         dbus_error_init(&error);
2954
2955         pager_open_if_enabled();
2956
2957         if (!(m = dbus_message_new_method_call(
2958                               "org.freedesktop.systemd1",
2959                               "/org/freedesktop/systemd1",
2960                               "org.freedesktop.systemd1.Manager",
2961                               "Dump"))) {
2962                 log_error("Could not allocate message.");
2963                 return -ENOMEM;
2964         }
2965
2966         if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
2967                 log_error("Failed to issue method call: %s", bus_error_message(&error));
2968                 r = -EIO;
2969                 goto finish;
2970         }
2971
2972         if (!dbus_message_get_args(reply, &error,
2973                                    DBUS_TYPE_STRING, &text,
2974                                    DBUS_TYPE_INVALID)) {
2975                 log_error("Failed to parse reply: %s", bus_error_message(&error));
2976                 r = -EIO;
2977                 goto finish;
2978         }
2979
2980         fputs(text, stdout);
2981
2982         r = 0;
2983
2984 finish:
2985         if (m)
2986                 dbus_message_unref(m);
2987
2988         if (reply)
2989                 dbus_message_unref(reply);
2990
2991         dbus_error_free(&error);
2992
2993         return r;
2994 }
2995
2996 static int snapshot(DBusConnection *bus, char **args) {
2997         DBusMessage *m = NULL, *reply = NULL;
2998         DBusError error;
2999         int r;
3000         const char *name = "", *path, *id;
3001         dbus_bool_t cleanup = FALSE;
3002         DBusMessageIter iter, sub;
3003         const char
3004                 *interface = "org.freedesktop.systemd1.Unit",
3005                 *property = "Id";
3006
3007         dbus_error_init(&error);
3008
3009         if (!(m = dbus_message_new_method_call(
3010                               "org.freedesktop.systemd1",
3011                               "/org/freedesktop/systemd1",
3012                               "org.freedesktop.systemd1.Manager",
3013                               "CreateSnapshot"))) {
3014                 log_error("Could not allocate message.");
3015                 return -ENOMEM;
3016         }
3017
3018         if (strv_length(args) > 1)
3019                 name = args[1];
3020
3021         if (!dbus_message_append_args(m,
3022                                       DBUS_TYPE_STRING, &name,
3023                                       DBUS_TYPE_BOOLEAN, &cleanup,
3024                                       DBUS_TYPE_INVALID)) {
3025                 log_error("Could not append arguments to message.");
3026                 r = -ENOMEM;
3027                 goto finish;
3028         }
3029
3030         if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3031                 log_error("Failed to issue method call: %s", bus_error_message(&error));
3032                 r = -EIO;
3033                 goto finish;
3034         }
3035
3036         if (!dbus_message_get_args(reply, &error,
3037                                    DBUS_TYPE_OBJECT_PATH, &path,
3038                                    DBUS_TYPE_INVALID)) {
3039                 log_error("Failed to parse reply: %s", bus_error_message(&error));
3040                 r = -EIO;
3041                 goto finish;
3042         }
3043
3044         dbus_message_unref(m);
3045         if (!(m = dbus_message_new_method_call(
3046                               "org.freedesktop.systemd1",
3047                               path,
3048                               "org.freedesktop.DBus.Properties",
3049                               "Get"))) {
3050                 log_error("Could not allocate message.");
3051                 return -ENOMEM;
3052         }
3053
3054         if (!dbus_message_append_args(m,
3055                                       DBUS_TYPE_STRING, &interface,
3056                                       DBUS_TYPE_STRING, &property,
3057                                       DBUS_TYPE_INVALID)) {
3058                 log_error("Could not append arguments to message.");
3059                 r = -ENOMEM;
3060                 goto finish;
3061         }
3062
3063         dbus_message_unref(reply);
3064         if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3065                 log_error("Failed to issue method call: %s", bus_error_message(&error));
3066                 r = -EIO;
3067                 goto finish;
3068         }
3069
3070         if (!dbus_message_iter_init(reply, &iter) ||
3071             dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_VARIANT)  {
3072                 log_error("Failed to parse reply.");
3073                 r = -EIO;
3074                 goto finish;
3075         }
3076
3077         dbus_message_iter_recurse(&iter, &sub);
3078
3079         if (dbus_message_iter_get_arg_type(&sub) != DBUS_TYPE_STRING)  {
3080                 log_error("Failed to parse reply.");
3081                 r = -EIO;
3082                 goto finish;
3083         }
3084
3085         dbus_message_iter_get_basic(&sub, &id);
3086
3087         if (!arg_quiet)
3088                 puts(id);
3089         r = 0;
3090
3091 finish:
3092         if (m)
3093                 dbus_message_unref(m);
3094
3095         if (reply)
3096                 dbus_message_unref(reply);
3097
3098         dbus_error_free(&error);
3099
3100         return r;
3101 }
3102
3103 static int delete_snapshot(DBusConnection *bus, char **args) {
3104         DBusMessage *m = NULL, *reply = NULL;
3105         int r;
3106         DBusError error;
3107         char **name;
3108
3109         assert(bus);
3110         assert(args);
3111
3112         dbus_error_init(&error);
3113
3114         STRV_FOREACH(name, args+1) {
3115                 const char *path = NULL;
3116
3117                 if (!(m = dbus_message_new_method_call(
3118                                       "org.freedesktop.systemd1",
3119                                       "/org/freedesktop/systemd1",
3120                                       "org.freedesktop.systemd1.Manager",
3121                                       "GetUnit"))) {
3122                         log_error("Could not allocate message.");
3123                         r = -ENOMEM;
3124                         goto finish;
3125                 }
3126
3127                 if (!dbus_message_append_args(m,
3128                                               DBUS_TYPE_STRING, name,
3129                                               DBUS_TYPE_INVALID)) {
3130                         log_error("Could not append arguments to message.");
3131                         r = -ENOMEM;
3132                         goto finish;
3133                 }
3134
3135                 if (!(reply = dbus_connection_send_with_reply_and_block(bus, m, -1, &error))) {
3136                         log_error("Failed to issue method call: %s", bus_error_message(&error));
3137                         r = -EIO;
3138                         goto finish;
3139                 }
3140
3141                 if (!dbus_message_get_args(reply, &error,
3142                                            DBUS_TYPE_OBJECT_PATH, &path,
3143                                            DBUS_TYPE_INVALID)) {
3144                         log_error("Failed to parse reply: %s", bus_error_message(&error));
3145                         r = -EIO;
3146                         goto finish;
3147                 }
3148
3149