src/systemctl/systemctl.c

   1 /*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
   2
   3 /***
   4   This file is part of systemd.
   5
   6   Copyright 2010 Lennart Poettering
   7   Copyright 2013 Marc-Antoine Perennou
   8
   9   systemd is free software; you can redistribute it and/or modify it
  10   under the terms of the GNU Lesser General Public License as published by
  11   the Free Software Foundation; either version 2.1 of the License, or
  12   (at your option) any later version.
  13
  14   systemd is distributed in the hope that it will be useful, but
  15   WITHOUT ANY WARRANTY; without even the implied warranty of
  16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  17   Lesser General Public License for more details.
  18
  19   You should have received a copy of the GNU Lesser General Public License
  20   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  21 ***/
  22
  23 #include <sys/reboot.h>
  24 #include <linux/reboot.h>
  25 #include <sys/syscall.h>
  26 #include <stdio.h>
  27 #include <getopt.h>
  28 #include <locale.h>
  29 #include <stdbool.h>
  30 #include <string.h>
  31 #include <errno.h>
  32 #include <sys/ioctl.h>
  33 #include <termios.h>
  34 #include <unistd.h>
  35 #include <fcntl.h>
  36 #include <sys/socket.h>
  37 #include <sys/stat.h>
  38 #include <stddef.h>
  39 #include <sys/prctl.h>
  40 #include <fnmatch.h>
  41
  42 #include "sd-daemon.h"
  43 #include "sd-shutdown.h"
  44 #include "sd-login.h"
  45 #include "sd-bus.h"
  46 #include "log.h"
  47 #include "util.h"
  48 #include "macro.h"
  49 #include "set.h"
  50 #include "utmp-wtmp.h"
  51 #include "special.h"
  52 #include "initreq.h"
  53 #include "path-util.h"
  54 #include "strv.h"
  55 #include "cgroup-show.h"
  56 #include "cgroup-util.h"
  57 #include "list.h"
  58 #include "path-lookup.h"
  59 #include "conf-parser.h"
  60 #include "exit-status.h"
  61 #include "bus-errors.h"
  62 #include "build.h"
  63 #include "unit-name.h"
  64 #include "pager.h"
  65 #include "spawn-ask-password-agent.h"
  66 #include "spawn-polkit-agent.h"
  67 #include "install.h"
  68 #include "logs-show.h"
  69 #include "socket-util.h"
  70 #include "fileio.h"
  71 #include "bus-util.h"
  72 #include "bus-message.h"
  73 #include "bus-error.h"
  74 #include "bus-errors.h"
  75
  76 static char **arg_types = NULL;
  77 static char **arg_states = NULL;
  78 static char **arg_properties = NULL;
  79 static bool arg_all = false;
  80 static bool original_stdout_is_tty;
  81 static enum dependency {
  82         DEPENDENCY_FORWARD,
  83         DEPENDENCY_REVERSE,
  84         DEPENDENCY_AFTER,
  85         DEPENDENCY_BEFORE,
  86         _DEPENDENCY_MAX
  87 } arg_dependency = DEPENDENCY_FORWARD;
  88 static const char *arg_job_mode = "replace";
  89 static UnitFileScope arg_scope = UNIT_FILE_SYSTEM;
  90 static bool arg_no_block = false;
  91 static bool arg_no_legend = false;
  92 static bool arg_no_pager = false;
  93 static bool arg_no_wtmp = false;
  94 static bool arg_no_wall = false;
  95 static bool arg_no_reload = false;
  96 static bool arg_show_types = false;
  97 static bool arg_ignore_inhibitors = false;
  98 static bool arg_dry = false;
  99 static bool arg_quiet = false;
 100 static bool arg_full = false;
 101 static int arg_force = 0;
 102 static bool arg_ask_password = true;
 103 static bool arg_runtime = false;
 104 static char **arg_wall = NULL;
 105 static const char *arg_kill_who = NULL;
 106 static int arg_signal = SIGTERM;
 107 static const char *arg_root = NULL;
 108 static usec_t arg_when = 0;
 109 static enum action {
 110         _ACTION_INVALID,
 111         ACTION_SYSTEMCTL,
 112         ACTION_HALT,
 113         ACTION_POWEROFF,
 114         ACTION_REBOOT,
 115         ACTION_KEXEC,
 116         ACTION_EXIT,
 117         ACTION_SUSPEND,
 118         ACTION_HIBERNATE,
 119         ACTION_HYBRID_SLEEP,
 120         ACTION_RUNLEVEL2,
 121         ACTION_RUNLEVEL3,
 122         ACTION_RUNLEVEL4,
 123         ACTION_RUNLEVEL5,
 124         ACTION_RESCUE,
 125         ACTION_EMERGENCY,
 126         ACTION_DEFAULT,
 127         ACTION_RELOAD,
 128         ACTION_REEXEC,
 129         ACTION_RUNLEVEL,
 130         ACTION_CANCEL_SHUTDOWN,
 131         _ACTION_MAX
 132 } arg_action = ACTION_SYSTEMCTL;
 133 static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;
 134 static char *arg_host = NULL;
 135 static unsigned arg_lines = 10;
 136 static OutputMode arg_output = OUTPUT_SHORT;
 137 static bool arg_plain = false;
 138
 139 static int daemon_reload(sd_bus *bus, char **args);
 140 static int halt_now(enum action a);
 141
 142 static int check_one_unit(sd_bus *bus, const char *name, const char *good_states, bool quiet);
 143
 144 static char** strv_skip_first(char **strv) {
 145         if (strv_length(strv) > 0)
 146                 return strv + 1;
 147         return NULL;
 148 }
 149
 150 static void pager_open_if_enabled(void) {
 151
 152         if (arg_no_pager)
 153                 return;
 154
 155         pager_open(false);
 156 }
 157
 158 static void ask_password_agent_open_if_enabled(void) {
 159
 160         /* Open the password agent as a child process if necessary */
 161
 162         if (!arg_ask_password)
 163                 return;
 164
 165         if (arg_scope != UNIT_FILE_SYSTEM)
 166                 return;
 167
 168         if (arg_transport != BUS_TRANSPORT_LOCAL)
 169                 return;
 170
 171         ask_password_agent_open();
 172 }
 173
 174 #ifdef HAVE_LOGIND
 175 static void polkit_agent_open_if_enabled(void) {
 176
 177         /* Open the polkit agent as a child process if necessary */
 178
 179         if (!arg_ask_password)
 180                 return;
 181
 182         if (arg_scope != UNIT_FILE_SYSTEM)
 183                 return;
 184
 185         if (arg_transport != BUS_TRANSPORT_LOCAL)
 186                 return;
 187
 188         polkit_agent_open();
 189 }
 190 #endif
 191
 192 static int translate_bus_error_to_exit_status(int r, const sd_bus_error *error) {
 193         assert(error);
 194
 195         if (!sd_bus_error_is_set(error))
 196                 return r;
 197
 198         if (sd_bus_error_has_name(error, SD_BUS_ERROR_ACCESS_DENIED) ||
 199             sd_bus_error_has_name(error, BUS_ERROR_ONLY_BY_DEPENDENCY) ||
 200             sd_bus_error_has_name(error, BUS_ERROR_NO_ISOLATION) ||
 201             sd_bus_error_has_name(error, BUS_ERROR_TRANSACTION_IS_DESTRUCTIVE))
 202                 return EXIT_NOPERMISSION;
 203
 204         if (sd_bus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT))
 205                 return EXIT_NOTINSTALLED;
 206
 207         if (sd_bus_error_has_name(error, BUS_ERROR_JOB_TYPE_NOT_APPLICABLE) ||
 208             sd_bus_error_has_name(error, SD_BUS_ERROR_NOT_SUPPORTED))
 209                 return EXIT_NOTIMPLEMENTED;
 210
 211         if (sd_bus_error_has_name(error, BUS_ERROR_LOAD_FAILED))
 212                 return EXIT_NOTCONFIGURED;
 213
 214         if (r != 0)
 215                 return r;
 216
 217         return EXIT_FAILURE;
 218 }
 219
 220 static void warn_wall(enum action a) {
 221         static const char *table[_ACTION_MAX] = {
 222                 [ACTION_HALT]            = "The system is going down for system halt NOW!",
 223                 [ACTION_REBOOT]          = "The system is going down for reboot NOW!",
 224                 [ACTION_POWEROFF]        = "The system is going down for power-off NOW!",
 225                 [ACTION_KEXEC]           = "The system is going down for kexec reboot NOW!",
 226                 [ACTION_RESCUE]          = "The system is going down to rescue mode NOW!",
 227                 [ACTION_EMERGENCY]       = "The system is going down to emergency mode NOW!",
 228                 [ACTION_CANCEL_SHUTDOWN] = "The system shutdown has been cancelled NOW!"
 229         };
 230
 231         if (arg_no_wall)
 232                 return;
 233
 234         if (arg_wall) {
 235                 _cleanup_free_ char *p;
 236
 237                 p = strv_join(arg_wall, " ");
 238                 if (!p) {
 239                         log_oom();
 240                         return;
 241                 }
 242
 243                 if (*p) {
 244                         utmp_wall(p, NULL);
 245                         return;
 246                 }
 247         }
 248
 249         if (!table[a])
 250                 return;
 251
 252         utmp_wall(table[a], NULL);
 253 }
 254
 255 static bool avoid_bus(void) {
 256
 257         if (running_in_chroot() > 0)
 258                 return true;
 259
 260         if (sd_booted() <= 0)
 261                 return true;
 262
 263         if (!isempty(arg_root))
 264                 return true;
 265
 266         if (arg_scope == UNIT_FILE_GLOBAL)
 267                 return true;
 268
 269         return false;
 270 }
 271
 272 static int compare_unit_info(const void *a, const void *b) {
 273         const UnitInfo *u = a, *v = b;
 274         const char *d1, *d2;
 275
 276         d1 = strrchr(u->id, '.');
 277         d2 = strrchr(v->id, '.');
 278
 279         if (d1 && d2) {
 280                 int r;
 281
 282                 r = strcasecmp(d1, d2);
 283                 if (r != 0)
 284                         return r;
 285         }
 286
 287         return strcasecmp(u->id, v->id);
 288 }
 289
 290 static bool output_show_unit(const UnitInfo *u, char **patterns) {
 291         const char *dot;
 292
 293         if (!strv_isempty(arg_states))
 294                 return
 295                         strv_contains(arg_states, u->load_state) ||
 296                         strv_contains(arg_states, u->sub_state) ||
 297                         strv_contains(arg_states, u->active_state);
 298
 299         if (!strv_isempty(patterns)) {
 300                 char **pattern;
 301
 302                 STRV_FOREACH(pattern, patterns)
 303                         if (fnmatch(*pattern, u->id, FNM_NOESCAPE) == 0)
 304                                 return true;
 305                 return false;
 306         }
 307
 308         return (!arg_types || ((dot = strrchr(u->id, '.')) &&
 309                                strv_find(arg_types, dot+1))) &&
 310                 (arg_all || !(streq(u->active_state, "inactive")
 311                               || u->following[0]) || u->job_id > 0);
 312 }
 313
 314 static void output_units_list(const UnitInfo *unit_infos, unsigned c, char** patterns) {
 315         unsigned id_len, max_id_len, load_len, active_len, sub_len, job_len, desc_len;
 316         const UnitInfo *u;
 317         unsigned n_shown = 0;
 318         int job_count = 0;
 319
 320         max_id_len = sizeof("UNIT")-1;
 321         load_len = sizeof("LOAD")-1;
 322         active_len = sizeof("ACTIVE")-1;
 323         sub_len = sizeof("SUB")-1;
 324         job_len = sizeof("JOB")-1;
 325         desc_len = 0;
 326
 327         for (u = unit_infos; u < unit_infos + c; u++) {
 328                 if (!output_show_unit(u, patterns))
 329                         continue;
 330
 331                 max_id_len = MAX(max_id_len, strlen(u->id));
 332                 load_len = MAX(load_len, strlen(u->load_state));
 333                 active_len = MAX(active_len, strlen(u->active_state));
 334                 sub_len = MAX(sub_len, strlen(u->sub_state));
 335
 336                 if (u->job_id != 0) {
 337                         job_len = MAX(job_len, strlen(u->job_type));
 338                         job_count++;
 339                 }
 340         }
 341
 342         if (!arg_full && original_stdout_is_tty) {
 343                 unsigned basic_len;
 344
 345                 id_len = MIN(max_id_len, 25u);
 346                 basic_len = 5 + id_len + 5 + active_len + sub_len;
 347
 348                 if (job_count)
 349                         basic_len += job_len + 1;
 350
 351                 if (basic_len < (unsigned) columns()) {
 352                         unsigned extra_len, incr;
 353                         extra_len = columns() - basic_len;
 354
 355                         /* Either UNIT already got 25, or is fully satisfied.
 356                          * Grant up to 25 to DESC now. */
 357                         incr = MIN(extra_len, 25u);
 358                         desc_len += incr;
 359                         extra_len -= incr;
 360
 361                         /* split the remaining space between UNIT and DESC,
 362                          * but do not give UNIT more than it needs. */
 363                         if (extra_len > 0) {
 364                                 incr = MIN(extra_len / 2, max_id_len - id_len);
 365                                 id_len += incr;
 366                                 desc_len += extra_len - incr;
 367                         }
 368                 }
 369         } else
 370                 id_len = max_id_len;
 371
 372         for (u = unit_infos; u < unit_infos + c; u++) {
 373                 _cleanup_free_ char *e = NULL;
 374                 const char *on_loaded, *off_loaded, *on = "";
 375                 const char *on_active, *off_active, *off = "";
 376
 377                 if (!output_show_unit(u, patterns))
 378                         continue;
 379
 380                 if (!n_shown && !arg_no_legend) {
 381                         printf("%-*s %-*s %-*s %-*s ",
 382                                id_len, "UNIT",
 383                                load_len, "LOAD",
 384                                active_len, "ACTIVE",
 385                                sub_len, "SUB");
 386
 387                         if (job_count)
 388                                 printf("%-*s ", job_len, "JOB");
 389
 390                         if (!arg_full && arg_no_pager)
 391                                 printf("%.*s\n", desc_len, "DESCRIPTION");
 392                         else
 393                                 printf("%s\n", "DESCRIPTION");
 394                 }
 395
 396                 n_shown++;
 397
 398                 if (streq(u->load_state, "error") ||
 399                     streq(u->load_state, "not-found")) {
 400                         on_loaded = on = ansi_highlight_red();
 401                         off_loaded = off = ansi_highlight_off();
 402                 } else
 403                         on_loaded = off_loaded = "";
 404
 405                 if (streq(u->active_state, "failed")) {
 406                         on_active = on = ansi_highlight_red();
 407                         off_active = off = ansi_highlight_off();
 408                 } else
 409                         on_active = off_active = "";
 410
 411                 e = arg_full ? NULL : ellipsize(u->id, id_len, 33);
 412
 413                 printf("%s%-*s%s %s%-*s%s %s%-*s %-*s%s %-*s",
 414                        on, id_len, e ? e : u->id, off,
 415                        on_loaded, load_len, u->load_state, off_loaded,
 416                        on_active, active_len, u->active_state,
 417                        sub_len, u->sub_state, off_active,
 418                        job_count ? job_len + 1 : 0, u->job_id ? u->job_type : "");
 419
 420                 if (desc_len > 0)
 421                         printf("%.*s\n", desc_len, u->description);
 422                 else
 423                         printf("%s\n", u->description);
 424         }
 425
 426         if (!arg_no_legend) {
 427                 const char *on, *off;
 428
 429                 if (n_shown) {
 430                         printf("\nLOAD   = Reflects whether the unit definition was properly loaded.\n"
 431                                "ACTIVE = The high-level unit activation state, i.e. generalization of SUB.\n"
 432                                "SUB    = The low-level unit activation state, values depend on unit type.\n");
 433                         if (job_count)
 434                                 printf("JOB    = Pending job for the unit.\n");
 435                         puts("");
 436                         on = ansi_highlight();
 437                         off = ansi_highlight_off();
 438                 } else {
 439                         on = ansi_highlight_red();
 440                         off = ansi_highlight_off();
 441                 }
 442
 443                 if (arg_all)
 444                         printf("%s%u loaded units listed.%s\n"
 445                                "To show all installed unit files use 'systemctl list-unit-files'.\n",
 446                                on, n_shown, off);
 447                 else
 448                         printf("%s%u loaded units listed.%s Pass --all to see loaded but inactive units, too.\n"
 449                                "To show all installed unit files use 'systemctl list-unit-files'.\n",
 450                                on, n_shown, off);
 451         }
 452 }
 453
 454 static int get_unit_list(
 455                 sd_bus *bus,
 456                 sd_bus_message **_reply,
 457                 UnitInfo **_unit_infos) {
 458
 459         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
 460         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
 461         _cleanup_free_ UnitInfo *unit_infos = NULL;
 462         size_t size = 0;
 463         int r, c = 0;
 464         UnitInfo u;
 465
 466         assert(bus);
 467         assert(_reply);
 468         assert(_unit_infos);
 469
 470         r = sd_bus_call_method(
 471                         bus,
 472                         "org.freedesktop.systemd1",
 473                         "/org/freedesktop/systemd1",
 474                         "org.freedesktop.systemd1.Manager",
 475                         "ListUnits",
 476                         &error,
 477                         &reply,
 478                         NULL);
 479         if (r < 0) {
 480                 log_error("Failed to list units: %s", bus_error_message(&error, r));
 481                 return r;
 482         }
 483
 484         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssssouso)");
 485         if (r < 0)
 486                 return bus_log_parse_error(r);
 487
 488         while ((r = bus_parse_unit_info(reply, &u)) > 0) {
 489
 490                 if (!GREEDY_REALLOC(unit_infos, size, c+1))
 491                         return log_oom();
 492
 493                 unit_infos[c++] = u;
 494         }
 495         if (r < 0)
 496                 return bus_log_parse_error(r);
 497
 498         r = sd_bus_message_exit_container(reply);
 499         if (r < 0)
 500                 return bus_log_parse_error(r);
 501
 502         *_reply = reply;
 503         reply = NULL;
 504
 505         *_unit_infos = unit_infos;
 506         unit_infos = NULL;
 507
 508         return c;
 509 }
 510
 511 static int list_units(sd_bus *bus, char **args) {
 512         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
 513         _cleanup_free_ UnitInfo *unit_infos = NULL;
 514         int r;
 515
 516         pager_open_if_enabled();
 517
 518         r = get_unit_list(bus, &reply, &unit_infos);
 519         if (r < 0)
 520                 return r;
 521
 522         qsort_safe(unit_infos, r, sizeof(UnitInfo), compare_unit_info);
 523         output_units_list(unit_infos, r, strv_skip_first(args));
 524
 525         return 0;
 526 }
 527
 528 static int get_triggered_units(
 529                 sd_bus *bus,
 530                 const char* path,
 531                 char*** ret) {
 532
 533         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
 534         int r;
 535
 536         r = sd_bus_get_property_strv(
 537                         bus,
 538                         "org.freedesktop.systemd1",
 539                         path,
 540                         "org.freedesktop.systemd1.Unit",
 541                         "Triggers",
 542                         &error,
 543                         ret);
 544
 545         if (r < 0)
 546                 log_error("Failed to determine triggers: %s", bus_error_message(&error, r));
 547
 548         return 0;
 549 }
 550
 551 static int get_listening(
 552                 sd_bus *bus,
 553                 const char* unit_path,
 554                 char*** listening) {
 555
 556         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
 557         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
 558         const char *type, *path;
 559         int r, n = 0;
 560
 561         r = sd_bus_get_property(
 562                         bus,
 563                         "org.freedesktop.systemd1",
 564                         unit_path,
 565                         "org.freedesktop.systemd1.Socket",
 566                         "Listen",
 567                         &error,
 568                         &reply,
 569                         "a(ss)");
 570         if (r < 0) {
 571                 log_error("Failed to get list of listening sockets: %s", bus_error_message(&error, r));
 572                 return r;
 573         }
 574
 575         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ss)");
 576         if (r < 0)
 577                 return bus_log_parse_error(r);
 578
 579         while ((r = sd_bus_message_read(reply, "(ss)", &type, &path)) > 0) {
 580
 581                 r = strv_extend(listening, type);
 582                 if (r < 0)
 583                         return log_oom();
 584
 585                 r = strv_extend(listening, path);
 586                 if (r < 0)
 587                         return log_oom();
 588
 589                 n++;
 590         }
 591         if (r < 0)
 592                 return bus_log_parse_error(r);
 593
 594         r = sd_bus_message_exit_container(reply);
 595         if (r < 0)
 596                 return bus_log_parse_error(r);
 597
 598         return n;
 599 }
 600
 601 struct socket_info {
 602         const char* id;
 603
 604         char* type;
 605         char* path;
 606
 607         /* Note: triggered is a list here, although it almost certainly
 608          * will always be one unit. Nevertheless, dbus API allows for multiple
 609          * values, so let's follow that.*/
 610         char** triggered;
 611
 612         /* The strv above is shared. free is set only in the first one. */
 613         bool own_triggered;
 614 };
 615
 616 static int socket_info_compare(const struct socket_info *a, const struct socket_info *b) {
 617         int o;
 618
 619         assert(a);
 620         assert(b);
 621
 622         o = strcmp(a->path, b->path);
 623         if (o == 0)
 624                 o = strcmp(a->type, b->type);
 625
 626         return o;
 627 }
 628
 629 static int output_sockets_list(struct socket_info *socket_infos, unsigned cs) {
 630         struct socket_info *s;
 631         unsigned pathlen = sizeof("LISTEN") - 1,
 632                 typelen = (sizeof("TYPE") - 1) * arg_show_types,
 633                 socklen = sizeof("UNIT") - 1,
 634                 servlen = sizeof("ACTIVATES") - 1;
 635         const char *on, *off;
 636
 637         for (s = socket_infos; s < socket_infos + cs; s++) {
 638                 unsigned tmp = 0;
 639                 char **a;
 640
 641                 socklen = MAX(socklen, strlen(s->id));
 642                 if (arg_show_types)
 643                         typelen = MAX(typelen, strlen(s->type));
 644                 pathlen = MAX(pathlen, strlen(s->path));
 645
 646                 STRV_FOREACH(a, s->triggered)
 647                         tmp += strlen(*a) + 2*(a != s->triggered);
 648                 servlen = MAX(servlen, tmp);
 649         }
 650
 651         if (cs) {
 652                 if (!arg_no_legend)
 653                         printf("%-*s %-*.*s%-*s %s\n",
 654                                pathlen, "LISTEN",
 655                                typelen + arg_show_types, typelen + arg_show_types, "TYPE ",
 656                                socklen, "UNIT",
 657                                "ACTIVATES");
 658
 659                 for (s = socket_infos; s < socket_infos + cs; s++) {
 660                         char **a;
 661
 662                         if (arg_show_types)
 663                                 printf("%-*s %-*s %-*s",
 664                                        pathlen, s->path, typelen, s->type, socklen, s->id);
 665                         else
 666                                 printf("%-*s %-*s",
 667                                        pathlen, s->path, socklen, s->id);
 668                         STRV_FOREACH(a, s->triggered)
 669                                 printf("%s %s",
 670                                        a == s->triggered ? "" : ",", *a);
 671                         printf("\n");
 672                 }
 673
 674                 on = ansi_highlight();
 675                 off = ansi_highlight_off();
 676                 if (!arg_no_legend)
 677                         printf("\n");
 678         } else {
 679                 on = ansi_highlight_red();
 680                 off = ansi_highlight_off();
 681         }
 682
 683         if (!arg_no_legend) {
 684                 printf("%s%u sockets listed.%s\n", on, cs, off);
 685                 if (!arg_all)
 686                         printf("Pass --all to see loaded but inactive sockets, too.\n");
 687         }
 688
 689         return 0;
 690 }
 691
 692 static int list_sockets(sd_bus *bus, char **args) {
 693         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
 694         _cleanup_free_ UnitInfo *unit_infos = NULL;
 695         struct socket_info *socket_infos = NULL;
 696         const UnitInfo *u;
 697         struct socket_info *s;
 698         unsigned cs = 0;
 699         size_t size = 0;
 700         int r = 0, n;
 701
 702         pager_open_if_enabled();
 703
 704         n = get_unit_list(bus, &reply, &unit_infos);
 705         if (n < 0)
 706                 return n;
 707
 708         for (u = unit_infos; u < unit_infos + n; u++) {
 709                 _cleanup_strv_free_ char **listening = NULL, **triggered = NULL;
 710                 int i, c;
 711
 712                 if (!output_show_unit(u, strv_skip_first(args)))
 713                         continue;
 714
 715                 if (!endswith(u->id, ".socket"))
 716                         continue;
 717
 718                 r = get_triggered_units(bus, u->unit_path, &triggered);
 719                 if (r < 0)
 720                         goto cleanup;
 721
 722                 c = get_listening(bus, u->unit_path, &listening);
 723                 if (c < 0) {
 724                         r = c;
 725                         goto cleanup;
 726                 }
 727
 728                 if (!GREEDY_REALLOC(socket_infos, size, cs + c)) {
 729                         r = log_oom();
 730                         goto cleanup;
 731                 }
 732
 733                 for (i = 0; i < c; i++)
 734                         socket_infos[cs + i] = (struct socket_info) {
 735                                 .id = u->id,
 736                                 .type = listening[i*2],
 737                                 .path = listening[i*2 + 1],
 738                                 .triggered = triggered,
 739                                 .own_triggered = i==0,
 740                         };
 741
 742                 /* from this point on we will cleanup those socket_infos */
 743                 cs += c;
 744                 free(listening);
 745                 listening = triggered = NULL; /* avoid cleanup */
 746         }
 747
 748         qsort_safe(socket_infos, cs, sizeof(struct socket_info),
 749                    (__compar_fn_t) socket_info_compare);
 750
 751         output_sockets_list(socket_infos, cs);
 752
 753  cleanup:
 754         assert(cs == 0 || socket_infos);
 755         for (s = socket_infos; s < socket_infos + cs; s++) {
 756                 free(s->type);
 757                 free(s->path);
 758                 if (s->own_triggered)
 759                         strv_free(s->triggered);
 760         }
 761         free(socket_infos);
 762
 763         return r;
 764 }
 765
 766 static int get_next_elapse(
 767                 sd_bus *bus,
 768                 const char *path,
 769                 dual_timestamp *next) {
 770
 771         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
 772         dual_timestamp t;
 773         int r;
 774
 775         assert(bus);
 776         assert(path);
 777         assert(next);
 778
 779         r = sd_bus_get_property_trivial(
 780                         bus,
 781                         "org.freedesktop.systemd1",
 782                         path,
 783                         "org.freedesktop.systemd1.Timer",
 784                         "NextElapseUSecMonotonic",
 785                         &error,
 786                         't',
 787                         &t.monotonic);
 788         if (r < 0) {
 789                 log_error("Failed to get next elapsation time: %s", bus_error_message(&error, r));
 790                 return r;
 791         }
 792
 793         r = sd_bus_get_property_trivial(
 794                         bus,
 795                         "org.freedesktop.systemd1",
 796                         path,
 797                         "org.freedesktop.systemd1.Timer",
 798                         "NextElapseUSecRealtime",
 799                         &error,
 800                         't',
 801                         &t.realtime);
 802         if (r < 0) {
 803                 log_error("Failed to get next elapsation time: %s", bus_error_message(&error, r));
 804                 return r;
 805         }
 806
 807         *next = t;
 808         return 0;
 809 }
 810
 811 struct timer_info {
 812         const char* id;
 813         usec_t next_elapse;
 814         char** triggered;
 815 };
 816
 817 static int timer_info_compare(const struct timer_info *a, const struct timer_info *b) {
 818         assert(a);
 819         assert(b);
 820
 821         if (a->next_elapse < b->next_elapse)
 822                 return -1;
 823         if (a->next_elapse > b->next_elapse)
 824                 return 1;
 825
 826         return strcmp(a->id, b->id);
 827 }
 828
 829 static int output_timers_list(struct timer_info *timer_infos, unsigned n) {
 830         struct timer_info *t;
 831         unsigned
 832                 nextlen = sizeof("NEXT") - 1,
 833                 leftlen = sizeof("LEFT") - 1,
 834                 unitlen = sizeof("UNIT") - 1,
 835                 activatelen = sizeof("ACTIVATES") - 1;
 836
 837         const char *on, *off;
 838
 839         assert(timer_infos || n == 0);
 840
 841         for (t = timer_infos; t < timer_infos + n; t++) {
 842                 unsigned ul = 0;
 843                 char **a;
 844
 845                 if (t->next_elapse > 0) {
 846                         char tstamp[FORMAT_TIMESTAMP_MAX] = "", trel[FORMAT_TIMESTAMP_RELATIVE_MAX] = "";
 847
 848                         format_timestamp(tstamp, sizeof(tstamp), t->next_elapse);
 849                         nextlen = MAX(nextlen, strlen(tstamp) + 1);
 850
 851                         format_timestamp_relative(trel, sizeof(trel), t->next_elapse);
 852                         leftlen = MAX(leftlen, strlen(trel));
 853                 }
 854
 855                 unitlen = MAX(unitlen, strlen(t->id));
 856
 857                 STRV_FOREACH(a, t->triggered)
 858                         ul += strlen(*a) + 2*(a != t->triggered);
 859                 activatelen = MAX(activatelen, ul);
 860         }
 861
 862         if (n > 0) {
 863                 if (!arg_no_legend)
 864                         printf("%-*s %-*s %-*s %s\n",
 865                                nextlen, "NEXT",
 866                                leftlen, "LEFT",
 867                                unitlen, "UNIT",
 868                                         "ACTIVATES");
 869
 870                 for (t = timer_infos; t < timer_infos + n; t++) {
 871                         char tstamp[FORMAT_TIMESTAMP_MAX] = "n/a", trel[FORMAT_TIMESTAMP_RELATIVE_MAX] = "n/a";
 872                         char **a;
 873
 874                         format_timestamp(tstamp, sizeof(tstamp), t->next_elapse);
 875                         format_timestamp_relative(trel, sizeof(trel), t->next_elapse);
 876
 877                         printf("%-*s %-*s %-*s",
 878                                nextlen, tstamp, leftlen, trel, unitlen, t->id);
 879
 880                         STRV_FOREACH(a, t->triggered)
 881                                 printf("%s %s",
 882                                        a == t->triggered ? "" : ",", *a);
 883                         printf("\n");
 884                 }
 885
 886                 on = ansi_highlight();
 887                 off = ansi_highlight_off();
 888                 if (!arg_no_legend)
 889                         printf("\n");
 890         } else {
 891                 on = ansi_highlight_red();
 892                 off = ansi_highlight_off();
 893         }
 894
 895         if (!arg_no_legend) {
 896                 printf("%s%u timers listed.%s\n", on, n, off);
 897                 if (!arg_all)
 898                         printf("Pass --all to see loaded but inactive timers, too.\n");
 899         }
 900
 901         return 0;
 902 }
 903
 904 static int list_timers(sd_bus *bus, char **args) {
 905
 906         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
 907         _cleanup_free_ struct timer_info *timer_infos = NULL;
 908         _cleanup_free_ UnitInfo *unit_infos = NULL;
 909         struct timer_info *t;
 910         const UnitInfo *u;
 911         size_t size = 0;
 912         int n, c = 0;
 913         dual_timestamp nw;
 914         int r = 0;
 915
 916         pager_open_if_enabled();
 917
 918         n = get_unit_list(bus, &reply, &unit_infos);
 919         if (n < 0)
 920                 return n;
 921
 922         dual_timestamp_get(&nw);
 923
 924         for (u = unit_infos; u < unit_infos + n; u++) {
 925                 _cleanup_strv_free_ char **triggered = NULL;
 926                 dual_timestamp next;
 927                 usec_t m;
 928
 929                 if (!output_show_unit(u, strv_skip_first(args)))
 930                         continue;
 931
 932                 if (!endswith(u->id, ".timer"))
 933                         continue;
 934
 935                 r = get_triggered_units(bus, u->unit_path, &triggered);
 936                 if (r < 0)
 937                         goto cleanup;
 938
 939                 r = get_next_elapse(bus, u->unit_path, &next);
 940                 if (r < 0)
 941                         goto cleanup;
 942
 943                 if (next.monotonic != (usec_t) -1 && next.monotonic > 0) {
 944                         usec_t converted;
 945
 946                         if (next.monotonic > nw.monotonic)
 947                                 converted = nw.realtime + (next.monotonic - nw.monotonic);
 948                         else
 949                                 converted = nw.realtime - (nw.monotonic - next.monotonic);
 950
 951                         if (next.realtime != (usec_t) -1 && next.realtime > 0)
 952                                 m = MIN(converted, next.realtime);
 953                         else
 954                                 m = converted;
 955                 } else
 956                         m = next.realtime;
 957
 958                 if (!GREEDY_REALLOC(timer_infos, size, c+1)) {
 959                         r = log_oom();
 960                         goto cleanup;
 961                 }
 962
 963                 timer_infos[c++] = (struct timer_info) {
 964                         .id = u->id,
 965                         .next_elapse = m,
 966                         .triggered = triggered,
 967                 };
 968
 969                 triggered = NULL; /* avoid cleanup */
 970         }
 971
 972         qsort_safe(timer_infos, c, sizeof(struct timer_info),
 973                    (__compar_fn_t) timer_info_compare);
 974
 975         output_timers_list(timer_infos, c);
 976
 977  cleanup:
 978         for (t = timer_infos; t < timer_infos + c; t++)
 979                 strv_free(t->triggered);
 980
 981         return r;
 982 }
 983
 984 static int compare_unit_file_list(const void *a, const void *b) {
 985         const char *d1, *d2;
 986         const UnitFileList *u = a, *v = b;
 987
 988         d1 = strrchr(u->path, '.');
 989         d2 = strrchr(v->path, '.');
 990
 991         if (d1 && d2) {
 992                 int r;
 993
 994                 r = strcasecmp(d1, d2);
 995                 if (r != 0)
 996                         return r;
 997         }
 998
 999         return strcasecmp(basename(u->path), basename(v->path));
1000 }
1001
1002 static bool output_show_unit_file(const UnitFileList *u, char **patterns) {
1003         const char *dot;
1004
1005         if (!strv_isempty(patterns)) {
1006                 char **pattern;
1007
1008                 STRV_FOREACH(pattern, patterns)
1009                         if (fnmatch(*pattern, basename(u->path), FNM_NOESCAPE) == 0)
1010                                 return true;
1011                 return false;
1012         }
1013
1014         return !arg_types || ((dot = strrchr(u->path, '.')) && strv_find(arg_types, dot+1));
1015 }
1016
1017 static void output_unit_file_list(const UnitFileList *units, unsigned c, char **patterns) {
1018         unsigned max_id_len, id_cols, state_cols, n_shown = 0;
1019         const UnitFileList *u;
1020
1021         max_id_len = sizeof("UNIT FILE")-1;
1022         state_cols = sizeof("STATE")-1;
1023
1024         for (u = units; u < units + c; u++) {
1025                 if (!output_show_unit_file(u, patterns))
1026                         continue;
1027
1028                 max_id_len = MAX(max_id_len, strlen(basename(u->path)));
1029                 state_cols = MAX(state_cols, strlen(unit_file_state_to_string(u->state)));
1030         }
1031
1032         if (!arg_full) {
1033                 unsigned basic_cols;
1034
1035                 id_cols = MIN(max_id_len, 25u);
1036                 basic_cols = 1 + id_cols + state_cols;
1037                 if (basic_cols < (unsigned) columns())
1038                         id_cols += MIN(columns() - basic_cols, max_id_len - id_cols);
1039         } else
1040                 id_cols = max_id_len;
1041
1042         if (!arg_no_legend)
1043                 printf("%-*s %-*s\n",
1044                        id_cols, "UNIT FILE",
1045                        state_cols, "STATE");
1046
1047         for (u = units; u < units + c; u++) {
1048                 _cleanup_free_ char *e = NULL;
1049                 const char *on, *off;
1050                 const char *id;
1051
1052                 if (!output_show_unit_file(u, patterns))
1053                         continue;
1054
1055                 n_shown++;
1056
1057                 if (u->state == UNIT_FILE_MASKED ||
1058                     u->state == UNIT_FILE_MASKED_RUNTIME ||
1059                     u->state == UNIT_FILE_DISABLED ||
1060                     u->state == UNIT_FILE_INVALID) {
1061                         on  = ansi_highlight_red();
1062                         off = ansi_highlight_off();
1063                 } else if (u->state == UNIT_FILE_ENABLED) {
1064                         on  = ansi_highlight_green();
1065                         off = ansi_highlight_off();
1066                 } else
1067                         on = off = "";
1068
1069                 id = basename(u->path);
1070
1071                 e = arg_full ? NULL : ellipsize(id, id_cols, 33);
1072
1073                 printf("%-*s %s%-*s%s\n",
1074                        id_cols, e ? e : id,
1075                        on, state_cols, unit_file_state_to_string(u->state), off);
1076         }
1077
1078         if (!arg_no_legend)
1079                 printf("\n%u unit files listed.\n", n_shown);
1080 }
1081
1082 static int list_unit_files(sd_bus *bus, char **args) {
1083         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1084         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1085         _cleanup_free_ UnitFileList *units = NULL;
1086         unsigned c = 0;
1087         const char *state;
1088         char *path;
1089         int r;
1090
1091         pager_open_if_enabled();
1092
1093         if (avoid_bus()) {
1094                 Hashmap *h;
1095                 UnitFileList *u;
1096                 Iterator i;
1097                 unsigned n_units;
1098
1099                 h = hashmap_new(string_hash_func, string_compare_func);
1100                 if (!h)
1101                         return log_oom();
1102
1103                 r = unit_file_get_list(arg_scope, arg_root, h);
1104                 if (r < 0) {
1105                         unit_file_list_free(h);
1106                         log_error("Failed to get unit file list: %s", strerror(-r));
1107                         return r;
1108                 }
1109
1110                 n_units = hashmap_size(h);
1111                 units = new(UnitFileList, n_units);
1112                 if (!units) {
1113                         unit_file_list_free(h);
1114                         return log_oom();
1115                 }
1116
1117                 HASHMAP_FOREACH(u, h, i) {
1118                         memcpy(units + c++, u, sizeof(UnitFileList));
1119                         free(u);
1120                 }
1121
1122                 assert(c == n_units);
1123                 hashmap_free(h);
1124         } else {
1125                 size_t size = 0;
1126
1127                 r = sd_bus_call_method(
1128                                 bus,
1129                                 "org.freedesktop.systemd1",
1130                                 "/org/freedesktop/systemd1",
1131                                 "org.freedesktop.systemd1.Manager",
1132                                 "ListUnitFiles",
1133                                 &error,
1134                                 &reply,
1135                                 NULL);
1136                 if (r < 0) {
1137                         log_error("Failed to list unit files: %s", bus_error_message(&error, r));
1138                         return r;
1139                 }
1140
1141                 r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ss)");
1142                 if (r < 0)
1143                         return bus_log_parse_error(r);
1144
1145                 while ((r = sd_bus_message_read(reply, "(ss)", &path, &state)) > 0) {
1146
1147                         if (!GREEDY_REALLOC(units, size, c + 1))
1148                                 return log_oom();
1149
1150                         units[c++] = (struct UnitFileList) {
1151                                 path,
1152                                 unit_file_state_from_string(state)
1153                         };
1154                 }
1155                 if (r < 0)
1156                         return bus_log_parse_error(r);
1157
1158                 r = sd_bus_message_exit_container(reply);
1159                 if (r < 0)
1160                         return bus_log_parse_error(r);
1161         }
1162
1163         if (c > 0) {
1164                 qsort(units, c, sizeof(UnitFileList), compare_unit_file_list);
1165                 output_unit_file_list(units, c, strv_skip_first(args));
1166         }
1167
1168         return 0;
1169 }
1170
1171 static int list_dependencies_print(const char *name, int level, unsigned int branches, bool last) {
1172         _cleanup_free_ char *n = NULL;
1173         size_t max_len = MAX(columns(),20u);
1174         size_t len = 0;
1175         int i;
1176
1177         if (!arg_plain) {
1178
1179                 for (i = level - 1; i >= 0; i--) {
1180                         len += 2;
1181                         if (len > max_len - 3 && !arg_full) {
1182                                 printf("%s...\n",max_len % 2 ? "" : " ");
1183                                 return 0;
1184                         }
1185                         printf("%s", draw_special_char(branches & (1 << i) ? DRAW_TREE_VERT : DRAW_TREE_SPACE));
1186                 }
1187                 len += 2;
1188
1189                 if (len > max_len - 3 && !arg_full) {
1190                         printf("%s...\n",max_len % 2 ? "" : " ");
1191                         return 0;
1192                 }
1193
1194                 printf("%s", draw_special_char(last ? DRAW_TREE_RIGHT : DRAW_TREE_BRANCH));
1195         }
1196
1197         if (arg_full){
1198                 printf("%s\n", name);
1199                 return 0;
1200         }
1201
1202         n = ellipsize(name, max_len-len, 100);
1203         if (!n)
1204                 return log_oom();
1205
1206         printf("%s\n", n);
1207         return 0;
1208 }
1209
1210 static int list_dependencies_get_dependencies(sd_bus *bus, const char *name, char ***deps) {
1211
1212         static const char *dependencies[_DEPENDENCY_MAX] = {
1213                 [DEPENDENCY_FORWARD] = "Requires\0"
1214                                        "RequiresOverridable\0"
1215                                        "Requisite\0"
1216                                        "RequisiteOverridable\0"
1217                                        "Wants\0",
1218                 [DEPENDENCY_REVERSE] = "RequiredBy\0"
1219                                        "RequiredByOverridable\0"
1220                                        "WantedBy\0"
1221                                        "PartOf\0",
1222                 [DEPENDENCY_AFTER]   = "After\0",
1223                 [DEPENDENCY_BEFORE]  = "Before\0",
1224         };
1225
1226         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1227         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1228         _cleanup_strv_free_ char **ret = NULL;
1229         _cleanup_free_ char *path = NULL;
1230         int r;
1231
1232         assert(bus);
1233         assert(name);
1234         assert(deps);
1235         assert_cc(ELEMENTSOF(dependencies) == _DEPENDENCY_MAX);
1236
1237         path = unit_dbus_path_from_name(name);
1238         if (!path)
1239                 return log_oom();
1240
1241         r = sd_bus_call_method(
1242                         bus,
1243                         "org.freedesktop.systemd1",
1244                         path,
1245                         "org.freedesktop.DBus.Properties",
1246                         "GetAll",
1247                         &error,
1248                         &reply,
1249                         "s", "org.freedesktop.systemd1.Unit");
1250         if (r < 0) {
1251                 log_error("Failed to get properties of %s: %s", name, bus_error_message(&error, r));
1252                 return r;
1253         }
1254
1255         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "{sv}");
1256         if (r < 0)
1257                 return bus_log_parse_error(r);
1258
1259         while ((r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) {
1260                 const char *prop;
1261
1262                 r = sd_bus_message_read(reply, "s", &prop);
1263                 if (r < 0)
1264                         return bus_log_parse_error(r);
1265
1266                 if (!nulstr_contains(dependencies[arg_dependency], prop)) {
1267                         r = sd_bus_message_skip(reply, "v");
1268                         if (r < 0)
1269                                 return bus_log_parse_error(r);
1270                 } else {
1271
1272                         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_VARIANT, "as");
1273                         if (r < 0)
1274                                 return bus_log_parse_error(r);
1275
1276                         r = bus_message_read_strv_extend(reply, &ret);
1277                         if (r < 0)
1278                                 return bus_log_parse_error(r);
1279
1280                         r = sd_bus_message_exit_container(reply);
1281                         if (r < 0)
1282                                 return bus_log_parse_error(r);
1283                 }
1284
1285                 r = sd_bus_message_exit_container(reply);
1286                 if (r < 0)
1287                         return bus_log_parse_error(r);
1288
1289         }
1290         if (r < 0)
1291                 return bus_log_parse_error(r);
1292
1293         r = sd_bus_message_exit_container(reply);
1294         if (r < 0)
1295                 return bus_log_parse_error(r);
1296
1297         *deps = ret;
1298         ret = NULL;
1299
1300         return 0;
1301 }
1302
1303 static int list_dependencies_compare(const void *_a, const void *_b) {
1304         const char **a = (const char**) _a, **b = (const char**) _b;
1305
1306         if (unit_name_to_type(*a) == UNIT_TARGET && unit_name_to_type(*b) != UNIT_TARGET)
1307                 return 1;
1308         if (unit_name_to_type(*a) != UNIT_TARGET && unit_name_to_type(*b) == UNIT_TARGET)
1309                 return -1;
1310
1311         return strcasecmp(*a, *b);
1312 }
1313
1314 static int list_dependencies_one(
1315                 sd_bus *bus,
1316                 const char *name,
1317                 int level,
1318                 char ***units,
1319                 unsigned int branches) {
1320
1321         _cleanup_strv_free_ char **deps = NULL, **u;
1322         char **c;
1323         int r = 0;
1324
1325         assert(bus);
1326         assert(name);
1327         assert(units);
1328
1329         u = strv_append(*units, name);
1330         if (!u)
1331                 return log_oom();
1332
1333         r = list_dependencies_get_dependencies(bus, name, &deps);
1334         if (r < 0)
1335                 return r;
1336
1337         qsort_safe(deps, strv_length(deps), sizeof (char*), list_dependencies_compare);
1338
1339         STRV_FOREACH(c, deps) {
1340                 int state;
1341
1342                 if (strv_contains(u, *c)) {
1343                         if (!arg_plain) {
1344                                 r = list_dependencies_print("...", level + 1, (branches << 1) | (c[1] == NULL ? 0 : 1), 1);
1345                                 if (r < 0)
1346                                         return r;
1347                         }
1348                         continue;
1349                 }
1350
1351                 state = check_one_unit(bus, *c, "activating\0active\0reloading\0", true);
1352                 if (state > 0)
1353                         printf("%s%s%s", ansi_highlight_green(), draw_special_char(DRAW_BLACK_CIRCLE), ansi_highlight_off());
1354                 else
1355                         printf("%s%s%s", ansi_highlight_red(), draw_special_char(DRAW_BLACK_CIRCLE), ansi_highlight_off());
1356
1357                 r = list_dependencies_print(*c, level, branches, c[1] == NULL);
1358                 if (r < 0)
1359                         return r;
1360
1361                 if (arg_all || unit_name_to_type(*c) == UNIT_TARGET) {
1362                        r = list_dependencies_one(bus, *c, level + 1, &u, (branches << 1) | (c[1] == NULL ? 0 : 1));
1363                        if (r < 0)
1364                                return r;
1365                 }
1366         }
1367
1368         if (arg_plain) {
1369                 strv_free(*units);
1370                 *units = u;
1371                 u = NULL;
1372         }
1373
1374         return 0;
1375 }
1376
1377 static int list_dependencies(sd_bus *bus, char **args) {
1378         _cleanup_strv_free_ char **units = NULL;
1379         _cleanup_free_ char *unit = NULL;
1380         const char *u;
1381
1382         assert(bus);
1383
1384         if (args[1]) {
1385                 unit = unit_name_mangle(args[1]);
1386                 if (!unit)
1387                         return log_oom();
1388                 u = unit;
1389         } else
1390                 u = SPECIAL_DEFAULT_TARGET;
1391
1392         pager_open_if_enabled();
1393
1394         puts(u);
1395
1396         return list_dependencies_one(bus, u, 0, &units, 0);
1397 }
1398
1399 static int get_default(sd_bus *bus, char **args) {
1400         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1401         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1402         _cleanup_free_ char *_path = NULL;
1403         const char *path;
1404         int r;
1405
1406         if (!bus || avoid_bus()) {
1407                 r = unit_file_get_default(arg_scope, arg_root, &_path);
1408                 if (r < 0) {
1409                         log_error("Failed to get default target: %s", strerror(-r));
1410                         return r;
1411                 }
1412                 path = _path;
1413
1414         } else {
1415                 r = sd_bus_call_method(
1416                                 bus,
1417                                 "org.freedesktop.systemd1",
1418                                 "/org/freedesktop/systemd1",
1419                                 "org.freedesktop.systemd1.Manager",
1420                                 "GetDefaultTarget",
1421                                 &error,
1422                                 &reply,
1423                                 NULL);
1424                 if (r < 0) {
1425                         log_error("Failed to get default target: %s", bus_error_message(&error, -r));
1426                         return r;
1427                 }
1428
1429                 r = sd_bus_message_read(reply, "s", &path);
1430                 if (r < 0)
1431                         return bus_log_parse_error(r);
1432         }
1433
1434         if (path)
1435                 printf("%s\n", path);
1436
1437         return 0;
1438 }
1439
1440 static void dump_unit_file_changes(const UnitFileChange *changes, unsigned n_changes) {
1441         unsigned i;
1442
1443         assert(changes || n_changes == 0);
1444
1445         for (i = 0; i < n_changes; i++) {
1446                 if (changes[i].type == UNIT_FILE_SYMLINK)
1447                         log_info("ln -s '%s' '%s'", changes[i].source, changes[i].path);
1448                 else
1449                         log_info("rm '%s'", changes[i].path);
1450         }
1451 }
1452
1453 static int deserialize_and_dump_unit_file_changes(sd_bus_message *m) {
1454         const char *type, *path, *source;
1455         int r;
1456
1457         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(sss)");
1458         if (r < 0)
1459                 return bus_log_parse_error(r);
1460
1461         while ((r = sd_bus_message_read(m, "(sss)", &type, &path, &source)) > 0) {
1462                 if (!arg_quiet) {
1463                         if (streq(type, "symlink"))
1464                                 log_info("ln -s '%s' '%s'", source, path);
1465                         else
1466                                 log_info("rm '%s'", path);
1467                 }
1468         }
1469         if (r < 0)
1470                 return bus_log_parse_error(r);
1471
1472         r = sd_bus_message_exit_container(m);
1473         if (r < 0)
1474                 return bus_log_parse_error(r);
1475
1476         return 0;
1477 }
1478
1479 static int set_default(sd_bus *bus, char **args) {
1480         _cleanup_free_ char *unit = NULL;
1481         UnitFileChange *changes = NULL;
1482         unsigned n_changes = 0;
1483         int r;
1484
1485         unit = unit_name_mangle_with_suffix(args[1], ".target");
1486         if (!unit)
1487                 return log_oom();
1488
1489         if (!bus || avoid_bus()) {
1490                 r = unit_file_set_default(arg_scope, arg_root, unit, arg_force, &changes, &n_changes);
1491                 if (r < 0) {
1492                         log_error("Failed to set default target: %s", strerror(-r));
1493                         return r;
1494                 }
1495
1496                 if (!arg_quiet)
1497                         dump_unit_file_changes(changes, n_changes);
1498
1499                 r = 0;
1500         } else {
1501                 _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1502                 _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1503
1504                 r = sd_bus_call_method(
1505                                 bus,
1506                                 "org.freedesktop.systemd1",
1507                                 "/org/freedesktop/systemd1",
1508                                 "org.freedesktop.systemd1.Manager",
1509                                 "SetDefaultTarget",
1510                                 &error,
1511                                 &reply,
1512                                 "sb", unit, arg_force);
1513                 if (r < 0) {
1514                         log_error("Failed to set default target: %s", bus_error_message(&error, -r));
1515                         return r;
1516                 }
1517
1518                 r = deserialize_and_dump_unit_file_changes(reply);
1519                 if (r < 0)
1520                         return r;
1521
1522                 /* Try to reload if enabeld */
1523                 if (!arg_no_reload)
1524                         r = daemon_reload(bus, args);
1525                 else
1526                         r = 0;
1527         }
1528
1529         unit_file_changes_free(changes, n_changes);
1530
1531         return r;
1532 }
1533
1534 struct job_info {
1535         uint32_t id;
1536         const char *name, *type, *state;
1537 };
1538
1539 static void output_jobs_list(const struct job_info* jobs, unsigned n, bool skipped) {
1540         unsigned id_len, unit_len, type_len, state_len;
1541         const struct job_info *j;
1542         const char *on, *off;
1543         bool shorten = false;
1544
1545         assert(n == 0 || jobs);
1546
1547         if (n == 0) {
1548                 on = ansi_highlight_green();
1549                 off = ansi_highlight_off();
1550
1551                 printf("%sNo jobs %s.%s\n", on, skipped ? "listed" : "running", off);
1552                 return;
1553         }
1554
1555         pager_open_if_enabled();
1556
1557         id_len = sizeof("JOB")-1;
1558         unit_len = sizeof("UNIT")-1;
1559         type_len = sizeof("TYPE")-1;
1560         state_len = sizeof("STATE")-1;
1561
1562         for (j = jobs; j < jobs + n; j++) {
1563                 uint32_t id = j->id;
1564                 assert(j->name && j->type && j->state);
1565
1566                 id_len = MAX(id_len, DECIMAL_STR_WIDTH(id));
1567                 unit_len = MAX(unit_len, strlen(j->name));
1568                 type_len = MAX(type_len, strlen(j->type));
1569                 state_len = MAX(state_len, strlen(j->state));
1570         }
1571
1572         if (!arg_full && id_len + 1 + unit_len + type_len + 1 + state_len > columns()) {
1573                 unit_len = MAX(33u, columns() - id_len - type_len - state_len - 3);
1574                 shorten = true;
1575         }
1576
1577         if (!arg_no_legend)
1578                 printf("%*s %-*s %-*s %-*s\n",
1579                        id_len, "JOB",
1580                        unit_len, "UNIT",
1581                        type_len, "TYPE",
1582                        state_len, "STATE");
1583
1584         for (j = jobs; j < jobs + n; j++) {
1585                 _cleanup_free_ char *e = NULL;
1586
1587                 if (streq(j->state, "running")) {
1588                         on = ansi_highlight();
1589                         off = ansi_highlight_off();
1590                 } else
1591                         on = off = "";
1592
1593                 e = shorten ? ellipsize(j->name, unit_len, 33) : NULL;
1594                 printf("%*u %s%-*s%s %-*s %s%-*s%s\n",
1595                        id_len, j->id,
1596                        on, unit_len, e ? e : j->name, off,
1597                        type_len, j->type,
1598                        on, state_len, j->state, off);
1599         }
1600
1601         if (!arg_no_legend) {
1602                 on = ansi_highlight();
1603                 off = ansi_highlight_off();
1604
1605                 printf("\n%s%u jobs listed%s.\n", on, n, off);
1606         }
1607 }
1608
1609 static bool output_show_job(struct job_info *job, char **patterns) {
1610         if (!strv_isempty(patterns)) {
1611                 char **pattern;
1612
1613                 STRV_FOREACH(pattern, patterns)
1614                         if (fnmatch(*pattern, job->name, FNM_NOESCAPE) == 0)
1615                                 return true;
1616                 return false;
1617         }
1618
1619         return true;
1620 }
1621
1622 static int list_jobs(sd_bus *bus, char **args) {
1623         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1624         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1625         const char *name, *type, *state, *job_path, *unit_path;
1626         _cleanup_free_ struct job_info *jobs = NULL;
1627         size_t size = 0;
1628         unsigned c = 0;
1629         uint32_t id;
1630         int r;
1631         bool skipped = false;
1632
1633         r = sd_bus_call_method(
1634                         bus,
1635                         "org.freedesktop.systemd1",
1636                         "/org/freedesktop/systemd1",
1637                         "org.freedesktop.systemd1.Manager",
1638                         "ListJobs",
1639                         &error,
1640                         &reply,
1641                         NULL);
1642         if (r < 0) {
1643                 log_error("Failed to list jobs: %s", bus_error_message(&error, r));
1644                 return r;
1645         }
1646
1647         r = sd_bus_message_enter_container(reply, 'a', "(usssoo)");
1648         if (r < 0)
1649                 return bus_log_parse_error(r);
1650
1651         while ((r = sd_bus_message_read(reply, "(usssoo)", &id, &name, &type, &state, &job_path, &unit_path)) > 0) {
1652                 struct job_info job = { id, name, type, state };
1653
1654                 if (!output_show_job(&job, strv_skip_first(args))) {
1655                         skipped = true;
1656                         continue;
1657                 }
1658
1659                 if (!GREEDY_REALLOC(jobs, size, c + 1))
1660                         return log_oom();
1661
1662                 jobs[c++] = job;
1663         }
1664         if (r < 0)
1665                 return bus_log_parse_error(r);
1666
1667         r = sd_bus_message_exit_container(reply);
1668         if (r < 0)
1669                 return bus_log_parse_error(r);
1670
1671         output_jobs_list(jobs, c, skipped);
1672         return r;
1673 }
1674
1675 static int cancel_job(sd_bus *bus, char **args) {
1676         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1677         char **name;
1678
1679         assert(args);
1680
1681         if (strv_length(args) <= 1)
1682                 return daemon_reload(bus, args);
1683
1684         STRV_FOREACH(name, args+1) {
1685                 uint32_t id;
1686                 int r;
1687
1688                 r = safe_atou32(*name, &id);
1689                 if (r < 0) {
1690                         log_error("Failed to parse job id \"%s\": %s", *name, strerror(-r));
1691                         return r;
1692                 }
1693
1694                 r = sd_bus_call_method(
1695                                 bus,
1696                                 "org.freedesktop.systemd1",
1697                                 "/org/freedesktop/systemd1",
1698                                 "org.freedesktop.systemd1.Manager",
1699                                 "CancelJob",
1700                                 &error,
1701                                 NULL,
1702                                 "u", id);
1703                 if (r < 0) {
1704                         log_error("Failed to cancel job %u: %s", (unsigned) id, bus_error_message(&error, r));
1705                         return r;
1706                 }
1707         }
1708
1709         return 0;
1710 }
1711
1712 static int need_daemon_reload(sd_bus *bus, const char *unit) {
1713         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1714         _cleanup_free_ char *n = NULL;
1715         const char *path;
1716         int b, r;
1717
1718         /* We ignore all errors here, since this is used to show a
1719          * warning only */
1720
1721         n = unit_name_mangle(unit);
1722         if (!n)
1723                 return -ENOMEM;
1724
1725         /* We don't use unit_dbus_path_from_name() directly since we
1726          * don't want to load the unit if it isn't loaded. */
1727
1728         r = sd_bus_call_method(
1729                         bus,
1730                         "org.freedesktop.systemd1",
1731                         "/org/freedesktop/systemd1",
1732                         "org.freedesktop.systemd1.Manager",
1733                         "GetUnit",
1734                         NULL,
1735                         &reply,
1736                         "s", n);
1737         if (r < 0)
1738                 return r;
1739
1740         r = sd_bus_message_read(reply, "o", &path);
1741         if (r < 0)
1742                 return r;
1743
1744         r = sd_bus_get_property_trivial(
1745                         bus,
1746                         "org.freedesktop.systemd1",
1747                         path,
1748                         "org.freedesktop.systemd1.Unit",
1749                         "NeedDaemonReload",
1750                         NULL,
1751                         'b', &b);
1752         if (r < 0)
1753                 return r;
1754
1755         return b;
1756 }
1757
1758 typedef struct WaitData {
1759         Set *set;
1760
1761         char *name;
1762         char *result;
1763 } WaitData;
1764
1765 static int wait_filter(sd_bus *bus, sd_bus_message *m, void *data, sd_bus_error *error) {
1766         WaitData *d = data;
1767
1768         assert(bus);
1769         assert(m);
1770         assert(d);
1771
1772         log_debug("Got D-Bus request: %s.%s() on %s",
1773                   sd_bus_message_get_interface(m),
1774                   sd_bus_message_get_member(m),
1775                   sd_bus_message_get_path(m));
1776
1777         if (sd_bus_message_is_signal(m, "org.freedesktop.DBus.Local", "Disconnected")) {
1778                 log_error("Warning! D-Bus connection terminated.");
1779                 sd_bus_close(bus);
1780         } else if (sd_bus_message_is_signal(m, "org.freedesktop.systemd1.Manager", "JobRemoved")) {
1781                 uint32_t id;
1782                 const char *path, *result, *unit;
1783                 char *ret;
1784                 int r;
1785
1786                 r = sd_bus_message_read(m, "uoss", &id, &path, &unit, &result);
1787                 if (r >= 0) {
1788                         ret = set_remove(d->set, (char*) path);
1789                         if (!ret)
1790                                 return 0;
1791
1792                         free(ret);
1793
1794                         if (!isempty(result))
1795                                 d->result = strdup(result);
1796
1797                         if (!isempty(unit))
1798                                 d->name = strdup(unit);
1799
1800                         return 0;
1801                 }
1802 #ifndef NOLEGACY
1803                 r = sd_bus_message_read(m, "uos", &id, &path, &result);
1804                 if (r >= 0) {
1805                         ret = set_remove(d->set, (char*) path);
1806                         if (!ret)
1807                                 return 0;
1808
1809                         free(ret);
1810
1811                         if (*result)
1812                                 d->result = strdup(result);
1813
1814                         return 0;
1815                 }
1816 #endif
1817
1818                 bus_log_parse_error(r);
1819         }
1820
1821         return 0;
1822 }
1823
1824 static int enable_wait_for_jobs(sd_bus *bus) {
1825         int r;
1826
1827         assert(bus);
1828
1829         r = sd_bus_add_match(
1830                         bus,
1831                         "type='signal',"
1832                         "sender='org.freedesktop.systemd1',"
1833                         "interface='org.freedesktop.systemd1.Manager',"
1834                         "member='JobRemoved',"
1835                         "path='/org/freedesktop/systemd1'",
1836                         NULL, NULL);
1837         if (r < 0) {
1838                 log_error("Failed to add match");
1839                 return -EIO;
1840         }
1841
1842         /* This is slightly dirty, since we don't undo the match registrations. */
1843         return 0;
1844 }
1845
1846 static int bus_process_wait(sd_bus *bus) {
1847         int r;
1848
1849         for (;;) {
1850                 r = sd_bus_process(bus, NULL);
1851                 if (r < 0)
1852                         return r;
1853                 if (r > 0)
1854                         return 0;
1855                 r = sd_bus_wait(bus, (uint64_t) -1);
1856                 if (r < 0)
1857                         return r;
1858         }
1859 }
1860
1861 static int check_wait_response(WaitData *d) {
1862         int r = 0;
1863
1864         assert(d->result);
1865
1866         if (!arg_quiet) {
1867                 if (streq(d->result, "timeout"))
1868                         log_error("Job for %s timed out.", strna(d->name));
1869                 else if (streq(d->result, "canceled"))
1870                         log_error("Job for %s canceled.", strna(d->name));
1871                 else if (streq(d->result, "dependency"))
1872                         log_error("A dependency job for %s failed. See 'journalctl -xn' for details.", strna(d->name));
1873                 else if (!streq(d->result, "done") && !streq(d->result, "skipped"))
1874                         log_error("Job for %s failed. See 'systemctl status %s' and 'journalctl -xn' for details.", strna(d->name), strna(d->name));
1875         }
1876
1877         if (streq(d->result, "timeout"))
1878                 r = -ETIME;
1879         else if (streq(d->result, "canceled"))
1880                 r = -ECANCELED;
1881         else if (streq(d->result, "dependency"))
1882                 r = -EIO;
1883         else if (!streq(d->result, "done") && !streq(d->result, "skipped"))
1884                 r = -EIO;
1885
1886         return r;
1887 }
1888
1889 static int wait_for_jobs(sd_bus *bus, Set *s) {
1890         WaitData d = { .set = s };
1891         int r = 0, q;
1892
1893         assert(bus);
1894         assert(s);
1895
1896         q = sd_bus_add_filter(bus, wait_filter, &d);
1897         if (q < 0)
1898                 return log_oom();
1899
1900         while (!set_isempty(s)) {
1901                 q = bus_process_wait(bus);
1902                 if (q < 0)
1903                         return q;
1904
1905                 if (d.result) {
1906                         q = check_wait_response(&d);
1907                         /* Return the first error as it is most likely to be
1908                          * meaningful. */
1909                         if (q < 0 && r == 0)
1910                                 r = q;
1911                 }
1912
1913                 free(d.name);
1914                 d.name = NULL;
1915
1916                 free(d.result);
1917                 d.result = NULL;
1918         }
1919
1920         q = sd_bus_remove_filter(bus, wait_filter, &d);
1921         if (q < 0 && r == 0)
1922                 r = q;
1923
1924         return r;
1925 }
1926
1927 static int check_one_unit(sd_bus *bus, const char *name, const char *good_states, bool quiet) {
1928         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
1929         _cleanup_free_ char *n = NULL, *state = NULL;
1930         const char *path;
1931         int r;
1932
1933         assert(name);
1934
1935         n = unit_name_mangle(name);
1936         if (!n)
1937                 return log_oom();
1938
1939         /* We don't use unit_dbus_path_from_name() directly since we
1940          * don't want to load the unit if it isn't loaded. */
1941
1942         r = sd_bus_call_method(
1943                         bus,
1944                         "org.freedesktop.systemd1",
1945                         "/org/freedesktop/systemd1",
1946                         "org.freedesktop.systemd1.Manager",
1947                         "GetUnit",
1948                         NULL,
1949                         &reply,
1950                         "s", n);
1951         if (r < 0) {
1952                 if (!quiet)
1953                         puts("unknown");
1954                 return 0;
1955         }
1956
1957         r = sd_bus_message_read(reply, "o", &path);
1958         if (r < 0)
1959                 return bus_log_parse_error(r);
1960
1961         r = sd_bus_get_property_string(
1962                         bus,
1963                         "org.freedesktop.systemd1",
1964                         path,
1965                         "org.freedesktop.systemd1.Unit",
1966                         "ActiveState",
1967                         NULL,
1968                         &state);
1969         if (r < 0) {
1970                 if (!quiet)
1971                         puts("unknown");
1972                 return 0;
1973         }
1974
1975         if (!quiet)
1976                 puts(state);
1977
1978         return nulstr_contains(good_states, state);
1979 }
1980
1981 static int check_triggering_units(
1982                 sd_bus *bus,
1983                 const char *name) {
1984
1985         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
1986         _cleanup_free_ char *path = NULL, *n = NULL, *state = NULL;
1987         _cleanup_strv_free_ char **triggered_by = NULL;
1988         bool print_warning_label = true;
1989         char **i;
1990         int r;
1991
1992         n = unit_name_mangle(name);
1993         if (!n)
1994                 return log_oom();
1995
1996         path = unit_dbus_path_from_name(n);
1997         if (!path)
1998                 return log_oom();
1999
2000         r = sd_bus_get_property_string(
2001                         bus,
2002                         "org.freedesktop.systemd1",
2003                         path,
2004                         "org.freedesktop.systemd1.Unit",
2005                         "LoadState",
2006                         &error,
2007                         &state);
2008         if (r < 0) {
2009                 log_error("Failed to get load state of %s: %s", n, bus_error_message(&error, r));
2010                 return r;
2011         }
2012
2013         if (streq(state, "masked"))
2014                 return 0;
2015
2016         r = sd_bus_get_property_strv(
2017                         bus,
2018                         "org.freedesktop.systemd1",
2019                         path,
2020                         "org.freedesktop.systemd1.Unit",
2021                         "TriggeredBy",
2022                         &error,
2023                         &triggered_by);
2024         if (r < 0) {
2025                 log_error("Failed to get triggered by array of %s: %s", n, bus_error_message(&error, r));
2026                 return r;
2027         }
2028
2029         STRV_FOREACH(i, triggered_by) {
2030                 r = check_one_unit(bus, *i, "active\0reloading\0", true);
2031                 if (r < 0) {
2032                         log_error("Failed to check unit: %s", strerror(-r));
2033                         return r;
2034                 }
2035
2036                 if (r == 0)
2037                         continue;
2038
2039                 if (print_warning_label) {
2040                         log_warning("Warning: Stopping %s, but it can still be activated by:", n);
2041                         print_warning_label = false;
2042                 }
2043
2044                 log_warning("  %s", *i);
2045         }
2046
2047         return 0;
2048 }
2049
2050 static int start_unit_one(
2051                 sd_bus *bus,
2052                 const char *method,
2053                 const char *name,
2054                 const char *mode,
2055                 sd_bus_error *error,
2056                 Set *s) {
2057
2058         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2059         _cleanup_free_ char *n;
2060         const char *path;
2061         int r;
2062
2063         assert(method);
2064         assert(name);
2065         assert(mode);
2066         assert(error);
2067
2068         n = unit_name_mangle(name);
2069         if (!n)
2070                 return log_oom();
2071
2072         r = sd_bus_call_method(
2073                         bus,
2074                         "org.freedesktop.systemd1",
2075                         "/org/freedesktop/systemd1",
2076                         "org.freedesktop.systemd1.Manager",
2077                         method,
2078                         error,
2079                         &reply,
2080                         "ss", n, mode);
2081         if (r < 0) {
2082                 if (r == -ENOENT && arg_action != ACTION_SYSTEMCTL)
2083                         /* There's always a fallback possible for
2084                          * legacy actions. */
2085                         return -EADDRNOTAVAIL;
2086
2087                 log_error("Failed to start %s: %s", name, bus_error_message(error, r));
2088                 return r;
2089         }
2090
2091         r = sd_bus_message_read(reply, "o", &path);
2092         if (r < 0)
2093                 return bus_log_parse_error(r);
2094
2095         if (need_daemon_reload(bus, n) > 0)
2096                 log_warning("Warning: Unit file of %s changed on disk, 'systemctl%s daemon-reload' recommended.",
2097                             n, arg_scope == UNIT_FILE_SYSTEM ? "" : " --user");
2098
2099         if (s) {
2100                 char *p;
2101
2102                 p = strdup(path);
2103                 if (!p)
2104                         return log_oom();
2105
2106                 r = set_consume(s, p);
2107                 if (r < 0)
2108                         return log_oom();
2109         }
2110
2111         return 0;
2112 }
2113
2114 static const struct {
2115         const char *target;
2116         const char *verb;
2117         const char *mode;
2118 } action_table[_ACTION_MAX] = {
2119         [ACTION_HALT]         = { SPECIAL_HALT_TARGET,         "halt",         "replace-irreversibly" },
2120         [ACTION_POWEROFF]     = { SPECIAL_POWEROFF_TARGET,     "poweroff",     "replace-irreversibly" },
2121         [ACTION_REBOOT]       = { SPECIAL_REBOOT_TARGET,       "reboot",       "replace-irreversibly" },
2122         [ACTION_KEXEC]        = { SPECIAL_KEXEC_TARGET,        "kexec",        "replace-irreversibly" },
2123         [ACTION_RUNLEVEL2]    = { SPECIAL_RUNLEVEL2_TARGET,    NULL,           "isolate" },
2124         [ACTION_RUNLEVEL3]    = { SPECIAL_RUNLEVEL3_TARGET,    NULL,           "isolate" },
2125         [ACTION_RUNLEVEL4]    = { SPECIAL_RUNLEVEL4_TARGET,    NULL,           "isolate" },
2126         [ACTION_RUNLEVEL5]    = { SPECIAL_RUNLEVEL5_TARGET,    NULL,           "isolate" },
2127         [ACTION_RESCUE]       = { SPECIAL_RESCUE_TARGET,       "rescue",       "isolate" },
2128         [ACTION_EMERGENCY]    = { SPECIAL_EMERGENCY_TARGET,    "emergency",    "isolate" },
2129         [ACTION_DEFAULT]      = { SPECIAL_DEFAULT_TARGET,      "default",      "isolate" },
2130         [ACTION_EXIT]         = { SPECIAL_EXIT_TARGET,         "exit",         "replace-irreversibly" },
2131         [ACTION_SUSPEND]      = { SPECIAL_SUSPEND_TARGET,      "suspend",      "replace-irreversibly" },
2132         [ACTION_HIBERNATE]    = { SPECIAL_HIBERNATE_TARGET,    "hibernate",    "replace-irreversibly" },
2133         [ACTION_HYBRID_SLEEP] = { SPECIAL_HYBRID_SLEEP_TARGET, "hybrid-sleep", "replace-irreversibly" },
2134 };
2135
2136 static enum action verb_to_action(const char *verb) {
2137         enum action i;
2138
2139         for (i = _ACTION_INVALID; i < _ACTION_MAX; i++)
2140                 if (streq_ptr(action_table[i].verb, verb))
2141                         return i;
2142
2143         return _ACTION_INVALID;
2144 }
2145
2146 static int start_unit(sd_bus *bus, char **args) {
2147         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2148         _cleanup_set_free_free_ Set *s = NULL;
2149         const char *method, *mode, *one_name;
2150         char **name;
2151         int r;
2152
2153         assert(bus);
2154
2155         ask_password_agent_open_if_enabled();
2156
2157         if (arg_action == ACTION_SYSTEMCTL) {
2158                 enum action action;
2159                 method =
2160                         streq(args[0], "stop") ||
2161                         streq(args[0], "condstop")              ? "StopUnit" :
2162                         streq(args[0], "reload")                ? "ReloadUnit" :
2163                         streq(args[0], "restart")               ? "RestartUnit" :
2164
2165                         streq(args[0], "try-restart")           ||
2166                         streq(args[0], "condrestart")           ? "TryRestartUnit" :
2167
2168                         streq(args[0], "reload-or-restart")     ? "ReloadOrRestartUnit" :
2169
2170                         streq(args[0], "reload-or-try-restart") ||
2171                         streq(args[0], "condreload")            ||
2172                         streq(args[0], "force-reload")          ? "ReloadOrTryRestartUnit" :
2173                                                                   "StartUnit";
2174                 action = verb_to_action(args[0]);
2175
2176                 mode = streq(args[0], "isolate") ? "isolate" :
2177                        action_table[action].mode ?: arg_job_mode;
2178
2179                 one_name = action_table[action].target;
2180         } else {
2181                 assert(arg_action < ELEMENTSOF(action_table));
2182                 assert(action_table[arg_action].target);
2183
2184                 method = "StartUnit";
2185
2186                 mode = action_table[arg_action].mode;
2187                 one_name = action_table[arg_action].target;
2188         }
2189
2190         if (!arg_no_block) {
2191                 r = enable_wait_for_jobs(bus);
2192                 if (r < 0) {
2193                         log_error("Could not watch jobs: %s", strerror(-r));
2194                         return r;
2195                 }
2196
2197                 s = set_new(string_hash_func, string_compare_func);
2198                 if (!s)
2199                         return log_oom();
2200         }
2201
2202         if (one_name) {
2203                 r = start_unit_one(bus, method, one_name, mode, &error, s);
2204                 if (r < 0)
2205                         r = translate_bus_error_to_exit_status(r, &error);
2206         } else {
2207                 r = 0;
2208
2209                 STRV_FOREACH(name, args+1) {
2210                         int q;
2211
2212                         q = start_unit_one(bus, method, *name, mode, &error, s);
2213                         if (q < 0) {
2214                                 r = translate_bus_error_to_exit_status(q, &error);
2215                                 sd_bus_error_free(&error);
2216                         }
2217                 }
2218         }
2219
2220         if (!arg_no_block) {
2221                 int q;
2222
2223                 q = wait_for_jobs(bus, s);
2224                 if (q < 0)
2225                         return q;
2226
2227                 /* When stopping units, warn if they can still be triggered by
2228                  * another active unit (socket, path, timer) */
2229                 if (!arg_quiet && streq(method, "StopUnit")) {
2230                         if (one_name)
2231                                 check_triggering_units(bus, one_name);
2232                         else
2233                                 STRV_FOREACH(name, args+1)
2234                                         check_triggering_units(bus, *name);
2235                 }
2236         }
2237
2238         return r;
2239 }
2240
2241 /* Ask systemd-logind, which might grant access to unprivileged users
2242  * through PolicyKit */
2243 static int reboot_with_logind(sd_bus *bus, enum action a) {
2244 #ifdef HAVE_LOGIND
2245         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2246         const char *method;
2247         int r;
2248
2249         if (!bus)
2250                 return -EIO;
2251
2252         polkit_agent_open_if_enabled();
2253
2254         switch (a) {
2255
2256         case ACTION_REBOOT:
2257                 method = "Reboot";
2258                 break;
2259
2260         case ACTION_POWEROFF:
2261                 method = "PowerOff";
2262                 break;
2263
2264         case ACTION_SUSPEND:
2265                 method = "Suspend";
2266                 break;
2267
2268         case ACTION_HIBERNATE:
2269                 method = "Hibernate";
2270                 break;
2271
2272         case ACTION_HYBRID_SLEEP:
2273                 method = "HybridSleep";
2274                 break;
2275
2276         default:
2277                 return -EINVAL;
2278         }
2279
2280         r = sd_bus_call_method(
2281                         bus,
2282                         "org.freedesktop.login1",
2283                         "/org/freedesktop/login1",
2284                         "org.freedesktop.login1.Manager",
2285                         method,
2286                         &error,
2287                         NULL,
2288                         "b", true);
2289         if (r < 0)
2290                 log_error("Failed to execute operation: %s", bus_error_message(&error, r));
2291
2292         return r;
2293 #else
2294         return -ENOSYS;
2295 #endif
2296 }
2297
2298 static int check_inhibitors(sd_bus *bus, enum action a) {
2299 #ifdef HAVE_LOGIND
2300         _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
2301         _cleanup_strv_free_ char **sessions = NULL;
2302         const char *what, *who, *why, *mode;
2303         uint32_t uid, pid;
2304         unsigned c = 0;
2305         char **s;
2306         int r;
2307
2308         if (!bus)
2309                 return 0;
2310
2311         if (arg_ignore_inhibitors || arg_force > 0)
2312                 return 0;
2313
2314         if (arg_when > 0)
2315                 return 0;
2316
2317         if (geteuid() == 0)
2318                 return 0;
2319
2320         if (!on_tty())
2321                 return 0;
2322
2323         r = sd_bus_call_method(
2324                         bus,
2325                         "org.freedesktop.login1",
2326                         "/org/freedesktop/login1",
2327                         "org.freedesktop.login1.Manager",
2328                         "ListInhibitors",
2329                         NULL,
2330                         &reply,
2331                         NULL);
2332         if (r < 0)
2333                 /* If logind is not around, then there are no inhibitors... */
2334                 return 0;
2335
2336         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssssuu)");
2337         if (r < 0)
2338                 return bus_log_parse_error(r);
2339
2340         while ((r = sd_bus_message_read(reply, "(ssssuu)", &what, &who, &why, &mode, &uid, &pid)) > 0) {
2341                 _cleanup_free_ char *comm = NULL, *user = NULL;
2342                 _cleanup_strv_free_ char **sv = NULL;
2343
2344                 if (!streq(mode, "block"))
2345                         continue;
2346
2347                 sv = strv_split(what, ":");
2348                 if (!sv)
2349                         return log_oom();
2350
2351                 if (!strv_contains(sv,
2352                                   a == ACTION_HALT ||
2353                                   a == ACTION_POWEROFF ||
2354                                   a == ACTION_REBOOT ||
2355                                   a == ACTION_KEXEC ? "shutdown" : "sleep"))
2356                         continue;
2357
2358                 get_process_comm(pid, &comm);
2359                 user = uid_to_name(uid);
2360
2361                 log_warning("Operation inhibited by \"%s\" (PID %lu \"%s\", user %s), reason is \"%s\".",
2362                             who, (unsigned long) pid, strna(comm), strna(user), why);
2363
2364                 c++;
2365         }
2366         if (r < 0)
2367                 return bus_log_parse_error(r);
2368
2369         r = sd_bus_message_exit_container(reply);
2370         if (r < 0)
2371                 return bus_log_parse_error(r);
2372
2373         /* Check for current sessions */
2374         sd_get_sessions(&sessions);
2375         STRV_FOREACH(s, sessions) {
2376                 _cleanup_free_ char *type = NULL, *tty = NULL, *seat = NULL, *user = NULL, *service = NULL, *class = NULL;
2377
2378                 if (sd_session_get_uid(*s, &uid) < 0 || uid == getuid())
2379                         continue;
2380
2381                 if (sd_session_get_class(*s, &class) < 0 || !streq(class, "user"))
2382                         continue;
2383
2384                 if (sd_session_get_type(*s, &type) < 0 || (!streq(type, "x11") && !streq(type, "tty")))
2385                         continue;
2386
2387                 sd_session_get_tty(*s, &tty);
2388                 sd_session_get_seat(*s, &seat);
2389                 sd_session_get_service(*s, &service);
2390                 user = uid_to_name(uid);
2391
2392                 log_warning("User %s is logged in on %s.", strna(user), isempty(tty) ? (isempty(seat) ? strna(service) : seat) : tty);
2393                 c++;
2394         }
2395
2396         if (c <= 0)
2397                 return 0;
2398
2399         log_error("Please retry operation after closing inhibitors and logging out other users.\nAlternatively, ignore inhibitors and users with 'systemctl %s -i'.",
2400                   action_table[a].verb);
2401
2402         return -EPERM;
2403 #else
2404         return 0;
2405 #endif
2406 }
2407
2408 static int start_special(sd_bus *bus, char **args) {
2409         enum action a;
2410         int r;
2411
2412         assert(args);
2413
2414         a = verb_to_action(args[0]);
2415
2416         r = check_inhibitors(bus, a);
2417         if (r < 0)
2418                 return r;
2419
2420         if (arg_force >= 2 && geteuid() != 0) {
2421                 log_error("Must be root.");
2422                 return -EPERM;
2423         }
2424
2425         if (arg_force >= 2 &&
2426             (a == ACTION_HALT ||
2427              a == ACTION_POWEROFF ||
2428              a == ACTION_REBOOT))
2429                 return halt_now(a);
2430
2431         if (arg_force >= 1 &&
2432             (a == ACTION_HALT ||
2433              a == ACTION_POWEROFF ||
2434              a == ACTION_REBOOT ||
2435              a == ACTION_KEXEC ||
2436              a == ACTION_EXIT))
2437                 return daemon_reload(bus, args);
2438
2439         /* first try logind, to allow authentication with polkit */
2440         if (geteuid() != 0 &&
2441             (a == ACTION_POWEROFF ||
2442              a == ACTION_REBOOT ||
2443              a == ACTION_SUSPEND ||
2444              a == ACTION_HIBERNATE ||
2445              a == ACTION_HYBRID_SLEEP)) {
2446                 r = reboot_with_logind(bus, a);
2447                 if (r >= 0)
2448                         return r;
2449         }
2450
2451         r = start_unit(bus, args);
2452         if (r == EXIT_SUCCESS)
2453                 warn_wall(a);
2454
2455         return r;
2456 }
2457
2458 static int check_unit_active(sd_bus *bus, char **args) {
2459         char **name;
2460         int r = 3; /* According to LSB: "program is not running" */
2461
2462         assert(bus);
2463         assert(args);
2464
2465         STRV_FOREACH(name, args+1) {
2466                 int state;
2467
2468                 state = check_one_unit(bus, *name, "active\0reloading\0", arg_quiet);
2469                 if (state < 0)
2470                         return state;
2471                 if (state > 0)
2472                         r = 0;
2473         }
2474
2475         return r;
2476 }
2477
2478 static int check_unit_failed(sd_bus *bus, char **args) {
2479         char **name;
2480         int r = 1;
2481
2482         assert(bus);
2483         assert(args);
2484
2485         STRV_FOREACH(name, args+1) {
2486                 int state;
2487
2488                 state = check_one_unit(bus, *name, "failed\0", arg_quiet);
2489                 if (state < 0)
2490                         return state;
2491                 if (state > 0)
2492                         r = 0;
2493         }
2494
2495         return r;
2496 }
2497
2498 static int kill_unit(sd_bus *bus, char **args) {
2499         _cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
2500         char **name;
2501         int r = 0;
2502
2503         assert(bus);
2504         assert(args);
2505
2506         if (!arg_kill_who)
2507                 arg_kill_who = "all";
2508
2509         STRV_FOREACH(name, args+1) {
2510                 _cleanup_free_ char *n = NULL;
2511
2512                 n = unit_name_mangle(*name);
2513                 if (!n)
2514                         return log_oom();
2515
2516                 r = sd_bus_call_method(
2517                                 bus,
2518                                 "org.freedesktop.systemd1",
2519                                 "/org/freedesktop/systemd1",
2520                                 "org.freedesktop.systemd1.Manager",
2521                                 "KillUnit",
2522                                 &error,
2523                                 NULL,
2524                                 "ssi", n, arg_kill_who, arg_signal);
2525                 if (r < 0) {
2526                         log_error("Failed to kill unit %s: %s", n, bus_error_message(&error, r));
2527                         return r;
2528                 }
2529         }
2530
2531         return 0;
2532 }
2533
2534 typedef struct ExecStatusInfo {
2535         char *name;
2536
2537         char *path;
2538         char **argv;
2539
2540         bool ignore;
2541
2542         usec_t start_timestamp;
2543         usec_t exit_timestamp;
2544         pid_t pid;
2545         int code;
2546         int status;
2547
2548         LIST_FIELDS(struct ExecStatusInfo, exec);
2549 } ExecStatusInfo;
2550
2551 static void exec_status_info_free(ExecStatusInfo *i) {
2552         assert(i);
2553
2554         free(i->name);
2555         free(i->path);
2556         strv_free(i->argv);
2557         free(i);
2558 }
2559
2560 static int exec_status_info_deserialize(sd_bus_message *m, ExecStatusInfo *i) {
2561         uint64_t start_timestamp, exit_timestamp, start_timestamp_monotonic, exit_timestamp_monotonic;
2562         const char *path;
2563         uint32_t pid;
2564         int32_t code, status;
2565         int ignore, r;
2566
2567         assert(m);
2568         assert(i);
2569
2570         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_STRUCT, "sasbttttuii");
2571         if (r < 0)
2572                 return bus_log_parse_error(r);
2573         else if (r == 0)
2574                 return 0;
2575
2576         r = sd_bus_message_read(m, "s", &path);
2577         if (r < 0)
2578                 return bus_log_parse_error(r);
2579
2580         i->path = strdup(path);
2581         if (!i->path)
2582                 return log_oom();
2583
2584         r = sd_bus_message_read_strv(m, &i->argv);
2585         if (r < 0)
2586                 return bus_log_parse_error(r);
2587
2588         r = sd_bus_message_read(m,
2589                                 "bttttuii",
2590                                 &ignore,
2591                                 &start_timestamp, &start_timestamp_monotonic,
2592                                 &exit_timestamp, &exit_timestamp_monotonic,
2593                                 &pid,
2594                                 &code, &status);
2595         if (r < 0)
2596                 return bus_log_parse_error(r);
2597
2598         i->ignore = ignore;
2599         i->start_timestamp = (usec_t) start_timestamp;
2600         i->exit_timestamp = (usec_t) exit_timestamp;
2601         i->pid = (pid_t) pid;
2602         i->code = code;
2603         i->status = status;
2604
2605         r = sd_bus_message_exit_container(m);
2606         if (r < 0)
2607                 return bus_log_parse_error(r);
2608
2609         return 1;
2610 }
2611
2612 typedef struct UnitStatusInfo {
2613         const char *id;
2614         const char *load_state;
2615         const char *active_state;
2616         const char *sub_state;
2617         const char *unit_file_state;
2618
2619         const char *description;
2620         const char *following;
2621
2622         char **documentation;
2623
2624         const char *fragment_path;
2625         const char *source_path;
2626         const char *control_group;
2627
2628         char **dropin_paths;
2629
2630         const char *load_error;
2631         const char *result;
2632
2633         usec_t inactive_exit_timestamp;
2634         usec_t inactive_exit_timestamp_monotonic;
2635         usec_t active_enter_timestamp;
2636         usec_t active_exit_timestamp;
2637         usec_t inactive_enter_timestamp;
2638
2639         bool need_daemon_reload;
2640
2641         /* Service */
2642         pid_t main_pid;
2643         pid_t control_pid;
2644         const char *status_text;
2645         const char *pid_file;
2646         bool running:1;
2647
2648         usec_t start_timestamp;
2649         usec_t exit_timestamp;
2650
2651         int exit_code, exit_status;
2652
2653         usec_t condition_timestamp;
2654         bool condition_result;
2655         bool failed_condition_trigger;
2656         bool failed_condition_negate;
2657         const char *failed_condition;
2658         const char *failed_condition_param;
2659
2660         /* Socket */
2661         unsigned n_accepted;
2662         unsigned n_connections;
2663         bool accept;
2664
2665         /* Pairs of type, path */
2666         char **listen;
2667
2668         /* Device */
2669         const char *sysfs_path;
2670
2671         /* Mount, Automount */
2672         const char *where;
2673
2674         /* Swap */
2675         const char *what;
2676
2677         LIST_HEAD(ExecStatusInfo, exec);
2678 } UnitStatusInfo;
2679
2680 static void print_status_info(
2681                 UnitStatusInfo *i,
2682                 bool *ellipsized) {
2683
2684         ExecStatusInfo *p;
2685         const char *on, *off, *ss;
2686         usec_t timestamp;
2687         char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], *s1;
2688         char since2[FORMAT_TIMESTAMP_MAX], *s2;
2689         const char *path;
2690         int flags =
2691                 arg_all * OUTPUT_SHOW_ALL |
2692                 (!on_tty() || pager_have()) * OUTPUT_FULL_WIDTH |
2693                 on_tty() * OUTPUT_COLOR |
2694                 !arg_quiet * OUTPUT_WARN_CUTOFF |
2695                 arg_full * OUTPUT_FULL_WIDTH;
2696         char **t, **t2;
2697
2698         assert(i);
2699
2700         /* This shows pretty information about a unit. See
2701          * print_property() for a low-level property printer */
2702
2703         printf("%s", strna(i->id));
2704
2705         if (i->description && !streq_ptr(i->id, i->description))
2706                 printf(" - %s", i->description);
2707
2708         printf("\n");
2709
2710         if (i->following)
2711                 printf("   Follow: unit currently follows state of %s\n", i->following);
2712
2713         if (streq_ptr(i->load_state, "error")) {
2714                 on = ansi_highlight_red();
2715                 off = ansi_highlight_off();
2716         } else
2717                 on = off = "";
2718
2719         path = i->source_path ? i->source_path : i->fragment_path;
2720
2721         if (i->load_error)
2722                 printf("   Loaded: %s%s%s (Reason: %s)\n",
2723                        on, strna(i->load_state), off, i->load_error);
2724         else if (path && i->unit_file_state)
2725                 printf("   Loaded: %s%s%s (%s; %s)\n",
2726                        on, strna(i->load_state), off, path, i->unit_file_state);
2727         else if (path)
2728                 printf("   Loaded: %s%s%s (%s)\n",
2729                        on, strna(i->load_state), off, path);
2730         else
2731                 printf("   Loaded: %s%s%s\n",
2732                        on, strna(i->load_state), off);
2733
2734         if (!strv_isempty(i->dropin_paths)) {
2735                 _cleanup_free_ char *dir = NULL;
2736                 bool last = false;
2737                 char ** dropin;
2738
2739                 STRV_FOREACH(dropin, i->dropin_paths) {
2740                         if (! dir || last) {
2741                                 printf(dir ? "        " : "  Drop-In: ");
2742
2743                                 free(dir);
2744                                 dir = NULL;
2745
2746                                 if (path_get_parent(*dropin, &dir) < 0) {
2747                                         log_oom();
2748                                         return;
2749                                 }
2750
2751                                 printf("%s\n           %s", dir,
2752                                        draw_special_char(DRAW_TREE_RIGHT));
2753                         }
2754
2755                         last = ! (*(dropin + 1) && startswith(*(dropin + 1), dir));
2756
2757                         printf("%s%s", basename(*dropin), last ? "\n" : ", ");
2758                 }
2759         }
2760
2761         ss = streq_ptr(i->active_state, i->sub_state) ? NULL : i->sub_state;
2762
2763         if (streq_ptr(i->active_state, "failed")) {
2764                 on = ansi_highlight_red();
2765                 off = ansi_highlight_off();
2766         } else if (streq_ptr(i->active_state, "active") || streq_ptr(i->active_state, "reloading")) {
2767                 on = ansi_highlight_green();
2768                 off = ansi_highlight_off();
2769         } else
2770                 on = off = "";
2771
2772         if (ss)
2773                 printf("   Active: %s%s (%s)%s",
2774                        on, strna(i->active_state), ss, off);
2775         else
2776                 printf("   Active: %s%s%s",
2777                        on, strna(i->active_state), off);
2778
2779         if (!isempty(i->result) && !streq(i->result, "success"))
2780                 printf(" (Result: %s)", i->result);
2781
2782         timestamp = (streq_ptr(i->active_state, "active")      ||
2783                      streq_ptr(i->active_state, "reloading"))   ? i->active_enter_timestamp :
2784                     (streq_ptr(i->active_state, "inactive")    ||
2785                      streq_ptr(i->active_state, "failed"))      ? i->inactive_enter_timestamp :
2786                     streq_ptr(i->active_state, "activating")    ? i->inactive_exit_timestamp :
2787                                                                   i->active_exit_timestamp;
2788
2789         s1 = format_timestamp_relative(since1, sizeof(since1), timestamp);
2790         s2 = format_timestamp(since2, sizeof(since2), timestamp);
2791
2792         if (s1)
2793                 printf(" since %s; %s\n", s2, s1);
2794         else if (s2)
2795                 printf(" since %s\n", s2);
2796         else
2797                 printf("\n");
2798
2799         if (!i->condition_result && i->condition_timestamp > 0) {
2800                 s1 = format_timestamp_relative(since1, sizeof(since1), i->condition_timestamp);
2801                 s2 = format_timestamp(since2, sizeof(since2), i->condition_timestamp);
2802
2803                 printf("           start condition failed at %s%s%s\n",
2804                        s2, s1 ? "; " : "", s1 ? s1 : "");
2805                 if (i->failed_condition_trigger)
2806                         printf("           none of the trigger conditions were met\n");
2807                 else if (i->failed_condition)
2808                         printf("           %s=%s%s was not met\n",
2809                                i->failed_condition,
2810                                i->failed_condition_negate ? "!" : "",
2811                                i->failed_condition_param);
2812         }
2813
2814         if (i->sysfs_path)
2815                 printf("   Device: %s\n", i->sysfs_path);
2816         if (i->where)
2817                 printf("    Where: %s\n", i->where);
2818         if (i->what)
2819                 printf("     What: %s\n", i->what);
2820
2821         STRV_FOREACH(t, i->documentation)
2822                 printf(" %*s %s\n", 9, t == i->documentation ? "Docs:" : "", *t);
2823
2824         STRV_FOREACH_PAIR(t, t2, i->listen)
2825                 printf(" %*s %s (%s)\n", 9, t == i->listen ? "Listen:" : "", *t2, *t);
2826
2827         if (i->accept)
2828                 printf(" Accepted: %u; Connected: %u\n", i->n_accepted, i->n_connections);
2829
2830         LIST_FOREACH(exec, p, i->exec) {
2831                 _cleanup_free_ char *argv = NULL;
2832                 bool good;
2833
2834                 /* Only show exited processes here */
2835                 if (p->code == 0)
2836                         continue;
2837
2838                 argv = strv_join(p->argv, " ");
2839                 printf("  Process: %u %s=%s ", p->pid, p->name, strna(argv));
2840
2841                 good = is_clean_exit_lsb(p->code, p->status, NULL);
2842                 if (!good) {
2843                         on = ansi_highlight_red();
2844                         off = ansi_highlight_off();
2845                 } else
2846                         on = off = "";
2847
2848                 printf("%s(code=%s, ", on, sigchld_code_to_string(p->code));
2849
2850                 if (p->code == CLD_EXITED) {
2851                         const char *c;
2852
2853                         printf("status=%i", p->status);
2854
2855                         c = exit_status_to_string(p->status, EXIT_STATUS_SYSTEMD);
2856                         if (c)
2857                                 printf("/%s", c);
2858
2859                 } else
2860                         printf("signal=%s", signal_to_string(p->status));
2861
2862                 printf(")%s\n", off);
2863
2864                 if (i->main_pid == p->pid &&
2865                     i->start_timestamp == p->start_timestamp &&
2866                     i->exit_timestamp == p->start_timestamp)
2867                         /* Let's not show this twice */
2868                         i->main_pid = 0;
2869
2870                 if (p->pid == i->control_pid)
2871                         i->control_pid = 0;
2872         }
2873
2874         if (i->main_pid > 0 || i->control_pid > 0) {
2875                 if (i->main_pid > 0) {
2876                         printf(" Main PID: %u", (unsigned) i->main_pid);
2877
2878                         if (i->running) {
2879                                 _cleanup_free_ char *comm = NULL;
2880                                 get_process_comm(i->main_pid, &comm);
2881                                 if (comm)
2882                                         printf(" (%s)", comm);
2883                         } else if (i->exit_code > 0) {
2884                                 printf(" (code=%s, ", sigchld_code_to_string(i->exit_code));
2885
2886                                 if (i->exit_code == CLD_EXITED) {
2887                                         const char *c;
2888
2889                                         printf("status=%i", i->exit_status);
2890
2891                                         c = exit_status_to_string(i->exit_status, EXIT_STATUS_SYSTEMD);
2892                                         if (c)
2893                                                 printf("/%s", c);
2894
2895                                 } else
2896                                         printf("signal=%s", signal_to_string(i->exit_status));
2897                                 printf(")");
2898                         }
2899
2900                         if (i->control_pid > 0)
2901                                 printf(";");
2902                 }
2903
2904                 if (i->control_pid > 0) {
2905                         _cleanup_free_ char *c = NULL;
2906
2907                         printf(" %8s: %u", i->main_pid ? "" : " Control", (unsigned) i->control_pid);
2908
2909                         get_process_comm(i->control_pid, &c);
2910                         if (c)
2911                                 printf(" (%s)", c);
2912                 }
2913
2914                 printf("\n");
2915         }
2916
2917         if (i->status_text)
2918                 printf("   Status: \"%s\"\n", i->status_text);
2919
2920         if (i->control_group &&
2921             (i->main_pid > 0 || i->control_pid > 0 || cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, i->control_group, false) == 0)) {
2922                 unsigned c;
2923
2924                 printf("   CGroup: %s\n", i->control_group);
2925
2926                 if (arg_transport == BUS_TRANSPORT_LOCAL || arg_transport == BUS_TRANSPORT_CONTAINER) {
2927                         unsigned k = 0;
2928                         pid_t extra[2];
2929                         char prefix[] = "           ";
2930
2931                         c = columns();
2932                         if (c > sizeof(prefix) - 1)
2933                                 c -= sizeof(prefix) - 1;
2934                         else
2935                                 c = 0;
2936
2937                         if (i->main_pid > 0)
2938                                 extra[k++] = i->main_pid;
2939
2940                         if (i->control_pid > 0)
2941                                 extra[k++] = i->control_pid;
2942
2943                         show_cgroup_and_extra(SYSTEMD_CGROUP_CONTROLLER, i->control_group, prefix,
2944                                                       c, false, extra, k, flags);
2945                 }
2946         }
2947
2948         if (i->id && arg_transport == BUS_TRANSPORT_LOCAL) {
2949                 printf("\n");
2950                 show_journal_by_unit(stdout,
2951                                      i->id,
2952                                      arg_output,
2953                                      0,
2954                                      i->inactive_exit_timestamp_monotonic,
2955                                      arg_lines,
2956                                      getuid(),
2957                                      flags,
2958                                      arg_scope == UNIT_FILE_SYSTEM,
2959                                      ellipsized);
2960         }
2961
2962         if (i->need_daemon_reload)
2963                 printf("\n%sWarning:%s Unit file changed on disk, 'systemctl %sdaemon-reload' recommended.\n",
2964                        ansi_highlight_red(),
2965                        ansi_highlight_off(),
2966                        arg_scope == UNIT_FILE_SYSTEM ? "" : "--user ");
2967 }
2968
2969 static void show_unit_help(UnitStatusInfo *i) {
2970         char **p;
2971
2972         assert(i);
2973
2974         if (!i->documentation) {
2975                 log_info("Documentation for %s not known.", i->id);
2976                 return;
2977         }
2978
2979         STRV_FOREACH(p, i->documentation) {
2980
2981                 if (startswith(*p, "man:")) {
2982                         const char *args[4] = { "man", NULL, NULL, NULL };
2983                         _cleanup_free_ char *page = NULL, *section = NULL;
2984                         char *e = NULL;
2985                         pid_t pid;
2986                         size_t k;
2987
2988                         k = strlen(*p);
2989
2990                         if ((*p)[k-1] == ')')
2991                                 e = strrchr(*p, '(');
2992
2993                         if (e) {
2994                                 page = strndup((*p) + 4, e - *p - 4);
2995                                 section = strndup(e + 1, *p + k - e - 2);
2996                                 if (!page || !section) {
2997                                         log_oom();
2998                                         return;
2999                                 }
3000
3001                                 args[1] = section;
3002                                 args[2] = page;
3003                         } else
3004                                 args[1] = *p + 4;
3005
3006                         pid = fork();
3007                         if (pid < 0) {
3008                                 log_error("Failed to fork: %m");
3009                                 continue;
3010                         }
3011
3012                         if (pid == 0) {
3013                                 /* Child */
3014                                 execvp(args[0], (char**) args);
3015                                 log_error("Failed to execute man: %m");
3016                                 _exit(EXIT_FAILURE);
3017                         }
3018
3019                         wait_for_terminate(pid, NULL);
3020                 } else
3021                         log_info("Can't show: %s", *p);
3022         }
3023 }
3024
3025 static int status_property(const char *name, sd_bus_message *m, UnitStatusInfo *i, const char *contents) {
3026         int r;
3027
3028         assert(name);
3029         assert(m);
3030         assert(i);
3031
3032         switch (contents[0]) {
3033
3034         case SD_BUS_TYPE_STRING: {
3035                 const char *s;
3036
3037                 r = sd_bus_message_read(m, "s", &s);
3038                 if (r < 0)
3039                         return bus_log_parse_error(r);
3040
3041                 if (!isempty(s)) {
3042                         if (streq(name, "Id"))
3043                                 i->id = s;
3044                         else if (streq(name, "LoadState"))
3045                                 i->load_state = s;
3046                         else if (streq(name, "ActiveState"))
3047                                 i->active_state = s;
3048                         else if (streq(name, "SubState"))
3049                                 i->sub_state = s;
3050                         else if (streq(name, "Description"))
3051                                 i->description = s;
3052                         else if (streq(name, "FragmentPath"))
3053                                 i->fragment_path = s;
3054                         else if (streq(name, "SourcePath"))
3055                                 i->source_path = s;
3056 #ifndef NOLEGACY
3057                         else if (streq(name, "DefaultControlGroup")) {
3058                                 const char *e;
3059                                 e = startswith(s, SYSTEMD_CGROUP_CONTROLLER ":");
3060                                 if (e)
3061                                         i->control_group = e;
3062                         }
3063 #endif
3064                         else if (streq(name, "ControlGroup"))
3065                                 i->control_group = s;
3066                         else if (streq(name, "StatusText"))
3067                                 i->status_text = s;
3068                         else if (streq(name, "PIDFile"))
3069                                 i->pid_file = s;
3070                         else if (streq(name, "SysFSPath"))
3071                                 i->sysfs_path = s;
3072                         else if (streq(name, "Where"))
3073                                 i->where = s;
3074                         else if (streq(name, "What"))
3075                                 i->what = s;
3076                         else if (streq(name, "Following"))
3077                                 i->following = s;
3078                         else if (streq(name, "UnitFileState"))
3079                                 i->unit_file_state = s;
3080                         else if (streq(name, "Result"))
3081                                 i->result = s;
3082                 }
3083
3084                 break;
3085         }
3086
3087         case SD_BUS_TYPE_BOOLEAN: {
3088                 int b;
3089
3090                 r = sd_bus_message_read(m, "b", &b);
3091                 if (r < 0)
3092                         return bus_log_parse_error(r);
3093
3094                 if (streq(name, "Accept"))
3095                         i->accept = b;
3096                 else if (streq(name, "NeedDaemonReload"))
3097                         i->need_daemon_reload = b;
3098                 else if (streq(name, "ConditionResult"))
3099                         i->condition_result = b;
3100
3101                 break;
3102         }
3103
3104         case SD_BUS_TYPE_UINT32: {
3105                 uint32_t u;
3106
3107                 r = sd_bus_message_read(m, "u", &u);
3108                 if (r < 0)
3109                         return bus_log_parse_error(r);
3110
3111                 if (streq(name, "MainPID")) {
3112                         if (u > 0) {
3113                                 i->main_pid = (pid_t) u;
3114                                 i->running = true;
3115                         }
3116                 } else if (streq(name, "ControlPID"))
3117                         i->control_pid = (pid_t) u;
3118                 else if (streq(name, "ExecMainPID")) {
3119                         if (u > 0)
3120                                 i->main_pid = (pid_t) u;
3121                 } else if (streq(name, "NAccepted"))
3122                         i->n_accepted = u;
3123                 else if (streq(name, "NConnections"))
3124                         i->n_connections = u;
3125
3126<