src/login/loginctl.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include <errno.h>
   4 #include <getopt.h>
   5 #include <locale.h>
   6 #include <string.h>
   7 #include <unistd.h>
   8
   9 #include "sd-bus.h"
  10
  11 #include "alloc-util.h"
  12 #include "bus-error.h"
  13 #include "bus-unit-util.h"
  14 #include "bus-util.h"
  15 #include "cgroup-show.h"
  16 #include "cgroup-util.h"
  17 #include "format-table.h"
  18 #include "log.h"
  19 #include "logs-show.h"
  20 #include "macro.h"
  21 #include "pager.h"
  22 #include "parse-util.h"
  23 #include "process-util.h"
  24 #include "sigbus.h"
  25 #include "signal-util.h"
  26 #include "spawn-polkit-agent.h"
  27 #include "string-table.h"
  28 #include "strv.h"
  29 #include "sysfs-show.h"
  30 #include "terminal-util.h"
  31 #include "unit-name.h"
  32 #include "user-util.h"
  33 #include "util.h"
  34 #include "verbs.h"
  35
  36 static char **arg_property = NULL;
  37 static bool arg_all = false;
  38 static bool arg_value = false;
  39 static bool arg_full = false;
  40 static bool arg_no_pager = false;
  41 static bool arg_legend = true;
  42 static const char *arg_kill_who = NULL;
  43 static int arg_signal = SIGTERM;
  44 static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;
  45 static char *arg_host = NULL;
  46 static bool arg_ask_password = true;
  47 static unsigned arg_lines = 10;
  48 static OutputMode arg_output = OUTPUT_SHORT;
  49
  50 static OutputFlags get_output_flags(void) {
  51
  52         return
  53                 arg_all * OUTPUT_SHOW_ALL |
  54                 (arg_full || !on_tty() || pager_have()) * OUTPUT_FULL_WIDTH |
  55                 colors_enabled() * OUTPUT_COLOR;
  56 }
  57
  58 static int get_session_path(sd_bus *bus, const char *session_id, sd_bus_error *error, char **path) {
  59         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
  60         int r;
  61         char *ans;
  62
  63         r = sd_bus_call_method(
  64                         bus,
  65                         "org.freedesktop.login1",
  66                         "/org/freedesktop/login1",
  67                         "org.freedesktop.login1.Manager",
  68                         "GetSession",
  69                         error, &reply,
  70                         "s", session_id);
  71         if (r < 0)
  72                 return r;
  73
  74         r = sd_bus_message_read(reply, "o", &ans);
  75         if (r < 0)
  76                 return r;
  77
  78         ans = strdup(ans);
  79         if (!ans)
  80                 return -ENOMEM;
  81
  82         *path = ans;
  83         return 0;
  84 }
  85
  86 static int show_table(Table *table, const char *word) {
  87         int r;
  88
  89         assert(table);
  90         assert(word);
  91
  92         if (table_get_rows(table) > 1) {
  93                 r = table_set_sort(table, (size_t) 0, (size_t) -1);
  94                 if (r < 0)
  95                         return log_error_errno(r, "Failed to sort table: %m");
  96
  97                 table_set_header(table, arg_legend);
  98
  99                 r = table_print(table, NULL);
 100                 if (r < 0)
 101                         return log_error_errno(r, "Failed to show table: %m");
 102         }
 103
 104         if (arg_legend) {
 105                 if (table_get_rows(table) > 1)
 106                         printf("\n%zu %s listed.\n", table_get_rows(table) - 1, word);
 107                 else
 108                         printf("No %s.\n", word);
 109         }
 110
 111         return 0;
 112 }
 113
 114 static int list_sessions(int argc, char *argv[], void *userdata) {
 115         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 116         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 117         _cleanup_(table_unrefp) Table *table = NULL;
 118         sd_bus *bus = userdata;
 119         int r;
 120
 121         assert(bus);
 122         assert(argv);
 123
 124         (void) pager_open(arg_no_pager, false);
 125
 126         r = sd_bus_call_method(
 127                         bus,
 128                         "org.freedesktop.login1",
 129                         "/org/freedesktop/login1",
 130                         "org.freedesktop.login1.Manager",
 131                         "ListSessions",
 132                         &error, &reply,
 133                         NULL);
 134         if (r < 0)
 135                 return log_error_errno(r, "Failed to list sessions: %s", bus_error_message(&error, r));
 136
 137         r = sd_bus_message_enter_container(reply, 'a', "(susso)");
 138         if (r < 0)
 139                 return bus_log_parse_error(r);
 140
 141         table = table_new("SESSION", "UID", "USER", "SEAT", "TTY");
 142         if (!table)
 143                 return log_oom();
 144
 145         /* Right-align the first two fields (since they are numeric) */
 146         (void) table_set_align_percent(table, TABLE_HEADER_CELL(0), 100);
 147         (void) table_set_align_percent(table, TABLE_HEADER_CELL(1), 100);
 148
 149         for (;;) {
 150                 _cleanup_(sd_bus_error_free) sd_bus_error error_tty = SD_BUS_ERROR_NULL;
 151                 _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply_tty = NULL;
 152                 const char *id, *user, *seat, *object, *tty = NULL;
 153                 uint32_t uid;
 154
 155                 r = sd_bus_message_read(reply, "(susso)", &id, &uid, &user, &seat, &object);
 156                 if (r < 0)
 157                         return bus_log_parse_error(r);
 158                 if (r == 0)
 159                         break;
 160
 161                 r = sd_bus_get_property(
 162                                 bus,
 163                                 "org.freedesktop.login1",
 164                                 object,
 165                                 "org.freedesktop.login1.Session",
 166                                 "TTY",
 167                                 &error_tty,
 168                                 &reply_tty,
 169                                 "s");
 170                 if (r < 0)
 171                         log_warning_errno(r, "Failed to get TTY for session %s: %s", id, bus_error_message(&error_tty, r));
 172                 else {
 173                         r = sd_bus_message_read(reply_tty, "s", &tty);
 174                         if (r < 0)
 175                                 return bus_log_parse_error(r);
 176                 }
 177
 178                 r = table_add_many(table,
 179                                    TABLE_STRING, id,
 180                                    TABLE_UINT32, uid,
 181                                    TABLE_STRING, user,
 182                                    TABLE_STRING, seat,
 183                                    TABLE_STRING, strna(tty));
 184                 if (r < 0)
 185                         return log_error_errno(r, "Failed to add row to table: %m");
 186         }
 187
 188         r = sd_bus_message_exit_container(reply);
 189         if (r < 0)
 190                 return bus_log_parse_error(r);
 191
 192         return show_table(table, "sessions");
 193 }
 194
 195 static int list_users(int argc, char *argv[], void *userdata) {
 196         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 197         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 198         _cleanup_(table_unrefp) Table *table = NULL;
 199         sd_bus *bus = userdata;
 200         int r;
 201
 202         assert(bus);
 203         assert(argv);
 204
 205         (void) pager_open(arg_no_pager, false);
 206
 207         r = sd_bus_call_method(
 208                         bus,
 209                         "org.freedesktop.login1",
 210                         "/org/freedesktop/login1",
 211                         "org.freedesktop.login1.Manager",
 212                         "ListUsers",
 213                         &error, &reply,
 214                         NULL);
 215         if (r < 0)
 216                 return log_error_errno(r, "Failed to list users: %s", bus_error_message(&error, r));
 217
 218         r = sd_bus_message_enter_container(reply, 'a', "(uso)");
 219         if (r < 0)
 220                 return bus_log_parse_error(r);
 221
 222         table = table_new("UID", "USER");
 223         if (!table)
 224                 return log_oom();
 225
 226         (void) table_set_align_percent(table, TABLE_HEADER_CELL(0), 100);
 227
 228         for (;;) {
 229                 const char *user;
 230                 uint32_t uid;
 231
 232                 r = sd_bus_message_read(reply, "(uso)", &uid, &user, NULL);
 233                 if (r < 0)
 234                         return bus_log_parse_error(r);
 235                 if (r == 0)
 236                         break;
 237
 238                 r = table_add_many(table,
 239                                    TABLE_UINT32, uid,
 240                                    TABLE_STRING, user);
 241                 if (r < 0)
 242                         return log_error_errno(r, "Failed to add row to table: %m");
 243         }
 244
 245         r = sd_bus_message_exit_container(reply);
 246         if (r < 0)
 247                 return bus_log_parse_error(r);
 248
 249         return show_table(table, "users");
 250 }
 251
 252 static int list_seats(int argc, char *argv[], void *userdata) {
 253         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 254         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 255         _cleanup_(table_unrefp) Table *table = NULL;
 256         sd_bus *bus = userdata;
 257         int r;
 258
 259         assert(bus);
 260         assert(argv);
 261
 262         (void) pager_open(arg_no_pager, false);
 263
 264         r = sd_bus_call_method(
 265                         bus,
 266                         "org.freedesktop.login1",
 267                         "/org/freedesktop/login1",
 268                         "org.freedesktop.login1.Manager",
 269                         "ListSeats",
 270                         &error, &reply,
 271                         NULL);
 272         if (r < 0)
 273                 return log_error_errno(r, "Failed to list seats: %s", bus_error_message(&error, r));
 274
 275         r = sd_bus_message_enter_container(reply, 'a', "(so)");
 276         if (r < 0)
 277                 return bus_log_parse_error(r);
 278
 279         table = table_new("SEAT");
 280         if (!table)
 281                 return log_oom();
 282
 283         for (;;) {
 284                 const char *seat;
 285
 286                 r = sd_bus_message_read(reply, "(so)", &seat, NULL);
 287                 if (r < 0)
 288                         return bus_log_parse_error(r);
 289                 if (r == 0)
 290                         break;
 291
 292                 r = table_add_cell(table, NULL, TABLE_STRING, seat);
 293                 if (r < 0)
 294                         return log_error_errno(r, "Failed to add row to table: %m");
 295         }
 296
 297         r = sd_bus_message_exit_container(reply);
 298         if (r < 0)
 299                 return bus_log_parse_error(r);
 300
 301         return show_table(table, "seats");
 302 }
 303
 304 static int show_unit_cgroup(sd_bus *bus, const char *interface, const char *unit, pid_t leader) {
 305         _cleanup_free_ char *cgroup = NULL;
 306         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 307         unsigned c;
 308         int r;
 309
 310         assert(bus);
 311         assert(unit);
 312
 313         r = show_cgroup_get_unit_path_and_warn(bus, unit, &cgroup);
 314         if (r < 0)
 315                 return r;
 316
 317         if (isempty(cgroup))
 318                 return 0;
 319
 320         c = columns();
 321         if (c > 18)
 322                 c -= 18;
 323         else
 324                 c = 0;
 325
 326         r = unit_show_processes(bus, unit, cgroup, "\t\t  ", c, get_output_flags(), &error);
 327         if (r == -EBADR) {
 328
 329                 if (arg_transport == BUS_TRANSPORT_REMOTE)
 330                         return 0;
 331
 332                 /* Fallback for older systemd versions where the GetUnitProcesses() call is not yet available */
 333
 334                 if (cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, cgroup) != 0 && leader <= 0)
 335                         return 0;
 336
 337                 show_cgroup_and_extra(SYSTEMD_CGROUP_CONTROLLER, cgroup, "\t\t  ", c, &leader, leader > 0, get_output_flags());
 338         } else if (r < 0)
 339                 return log_error_errno(r, "Failed to dump process list: %s", bus_error_message(&error, r));
 340
 341         return 0;
 342 }
 343
 344 typedef struct SessionStatusInfo {
 345         const char *id;
 346         uid_t uid;
 347         const char *name;
 348         struct dual_timestamp timestamp;
 349         unsigned int vtnr;
 350         const char *seat;
 351         const char *tty;
 352         const char *display;
 353         bool remote;
 354         const char *remote_host;
 355         const char *remote_user;
 356         const char *service;
 357         pid_t leader;
 358         const char *type;
 359         const char *class;
 360         const char *state;
 361         const char *scope;
 362         const char *desktop;
 363 } SessionStatusInfo;
 364
 365 typedef struct UserStatusInfo {
 366         uid_t uid;
 367         bool linger;
 368         const char *name;
 369         struct dual_timestamp timestamp;
 370         const char *state;
 371         char **sessions;
 372         const char *display;
 373         const char *slice;
 374 } UserStatusInfo;
 375
 376 typedef struct SeatStatusInfo {
 377         const char *id;
 378         const char *active_session;
 379         char **sessions;
 380 } SeatStatusInfo;
 381
 382 static void user_status_info_clear(UserStatusInfo *info) {
 383         if (info) {
 384                 strv_free(info->sessions);
 385                 zero(*info);
 386         }
 387 }
 388
 389 static void seat_status_info_clear(SeatStatusInfo *info) {
 390         if (info) {
 391                 strv_free(info->sessions);
 392                 zero(*info);
 393         }
 394 }
 395
 396 static int prop_map_first_of_struct(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
 397         const char *contents;
 398         int r;
 399
 400         r = sd_bus_message_peek_type(m, NULL, &contents);
 401         if (r < 0)
 402                 return r;
 403
 404         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_STRUCT, contents);
 405         if (r < 0)
 406                 return r;
 407
 408         r = sd_bus_message_read_basic(m, contents[0], userdata);
 409         if (r < 0)
 410                 return r;
 411
 412         r = sd_bus_message_skip(m, contents+1);
 413         if (r < 0)
 414                 return r;
 415
 416         r = sd_bus_message_exit_container(m);
 417         if (r < 0)
 418                 return r;
 419
 420         return 0;
 421 }
 422
 423 static int prop_map_sessions_strv(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
 424         const char *name;
 425         int r;
 426
 427         assert(bus);
 428         assert(m);
 429
 430         r = sd_bus_message_enter_container(m, 'a', "(so)");
 431         if (r < 0)
 432                 return r;
 433
 434         while ((r = sd_bus_message_read(m, "(so)", &name, NULL)) > 0) {
 435                 r = strv_extend(userdata, name);
 436                 if (r < 0)
 437                         return r;
 438         }
 439         if (r < 0)
 440                 return r;
 441
 442         return sd_bus_message_exit_container(m);
 443 }
 444
 445 static int print_session_status_info(sd_bus *bus, const char *path, bool *new_line) {
 446
 447         static const struct bus_properties_map map[]  = {
 448                 { "Id",                  "s",    NULL,                     offsetof(SessionStatusInfo, id)                  },
 449                 { "Name",                "s",    NULL,                     offsetof(SessionStatusInfo, name)                },
 450                 { "TTY",                 "s",    NULL,                     offsetof(SessionStatusInfo, tty)                 },
 451                 { "Display",             "s",    NULL,                     offsetof(SessionStatusInfo, display)             },
 452                 { "RemoteHost",          "s",    NULL,                     offsetof(SessionStatusInfo, remote_host)         },
 453                 { "RemoteUser",          "s",    NULL,                     offsetof(SessionStatusInfo, remote_user)         },
 454                 { "Service",             "s",    NULL,                     offsetof(SessionStatusInfo, service)             },
 455                 { "Desktop",             "s",    NULL,                     offsetof(SessionStatusInfo, desktop)             },
 456                 { "Type",                "s",    NULL,                     offsetof(SessionStatusInfo, type)                },
 457                 { "Class",               "s",    NULL,                     offsetof(SessionStatusInfo, class)               },
 458                 { "Scope",               "s",    NULL,                     offsetof(SessionStatusInfo, scope)               },
 459                 { "State",               "s",    NULL,                     offsetof(SessionStatusInfo, state)               },
 460                 { "VTNr",                "u",    NULL,                     offsetof(SessionStatusInfo, vtnr)                },
 461                 { "Leader",              "u",    NULL,                     offsetof(SessionStatusInfo, leader)              },
 462                 { "Remote",              "b",    NULL,                     offsetof(SessionStatusInfo, remote)              },
 463                 { "Timestamp",           "t",    NULL,                     offsetof(SessionStatusInfo, timestamp.realtime)  },
 464                 { "TimestampMonotonic",  "t",    NULL,                     offsetof(SessionStatusInfo, timestamp.monotonic) },
 465                 { "User",                "(uo)", prop_map_first_of_struct, offsetof(SessionStatusInfo, uid)                 },
 466                 { "Seat",                "(so)", prop_map_first_of_struct, offsetof(SessionStatusInfo, seat)                },
 467                 {}
 468         };
 469
 470         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 471         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
 472         char since1[FORMAT_TIMESTAMP_RELATIVE_MAX];
 473         char since2[FORMAT_TIMESTAMP_MAX];
 474         const char *s1, *s2;
 475         SessionStatusInfo i = {};
 476         int r;
 477
 478         r = bus_map_all_properties(bus, "org.freedesktop.login1", path, map, BUS_MAP_BOOLEAN_AS_BOOL, &error, &m, &i);
 479         if (r < 0)
 480                 return log_error_errno(r, "Could not get properties: %s", bus_error_message(&error, r));
 481
 482         if (*new_line)
 483                 printf("\n");
 484
 485         *new_line = true;
 486
 487         printf("%s - ", strna(i.id));
 488
 489         if (i.name)
 490                 printf("%s (%"PRIu32")\n", i.name, i.uid);
 491         else
 492                 printf("%"PRIu32"\n", i.uid);
 493
 494         s1 = format_timestamp_relative(since1, sizeof(since1), i.timestamp.realtime);
 495         s2 = format_timestamp(since2, sizeof(since2), i.timestamp.realtime);
 496
 497         if (s1)
 498                 printf("\t   Since: %s; %s\n", s2, s1);
 499         else if (s2)
 500                 printf("\t   Since: %s\n", s2);
 501
 502         if (i.leader > 0) {
 503                 _cleanup_free_ char *t = NULL;
 504
 505                 printf("\t  Leader: %"PRIu32, i.leader);
 506
 507                 get_process_comm(i.leader, &t);
 508                 if (t)
 509                         printf(" (%s)", t);
 510
 511                 printf("\n");
 512         }
 513
 514         if (!isempty(i.seat)) {
 515                 printf("\t    Seat: %s", i.seat);
 516
 517                 if (i.vtnr > 0)
 518                         printf("; vc%u", i.vtnr);
 519
 520                 printf("\n");
 521         }
 522
 523         if (i.tty)
 524                 printf("\t     TTY: %s\n", i.tty);
 525         else if (i.display)
 526                 printf("\t Display: %s\n", i.display);
 527
 528         if (i.remote_host && i.remote_user)
 529                 printf("\t  Remote: %s@%s\n", i.remote_user, i.remote_host);
 530         else if (i.remote_host)
 531                 printf("\t  Remote: %s\n", i.remote_host);
 532         else if (i.remote_user)
 533                 printf("\t  Remote: user %s\n", i.remote_user);
 534         else if (i.remote)
 535                 printf("\t  Remote: Yes\n");
 536
 537         if (i.service) {
 538                 printf("\t Service: %s", i.service);
 539
 540                 if (i.type)
 541                         printf("; type %s", i.type);
 542
 543                 if (i.class)
 544                         printf("; class %s", i.class);
 545
 546                 printf("\n");
 547         } else if (i.type) {
 548                 printf("\t    Type: %s", i.type);
 549
 550                 if (i.class)
 551                         printf("; class %s", i.class);
 552
 553                 printf("\n");
 554         } else if (i.class)
 555                 printf("\t   Class: %s\n", i.class);
 556
 557         if (!isempty(i.desktop))
 558                 printf("\t Desktop: %s\n", i.desktop);
 559
 560         if (i.state)
 561                 printf("\t   State: %s\n", i.state);
 562
 563         if (i.scope) {
 564                 printf("\t    Unit: %s\n", i.scope);
 565                 show_unit_cgroup(bus, "org.freedesktop.systemd1.Scope", i.scope, i.leader);
 566
 567                 if (arg_transport == BUS_TRANSPORT_LOCAL) {
 568
 569                         show_journal_by_unit(
 570                                         stdout,
 571                                         i.scope,
 572                                         arg_output,
 573                                         0,
 574                                         i.timestamp.monotonic,
 575                                         arg_lines,
 576                                         0,
 577                                         get_output_flags() | OUTPUT_BEGIN_NEWLINE,
 578                                         SD_JOURNAL_LOCAL_ONLY,
 579                                         true,
 580                                         NULL);
 581                 }
 582         }
 583
 584         return 0;
 585 }
 586
 587 static int print_user_status_info(sd_bus *bus, const char *path, bool *new_line) {
 588
 589         static const struct bus_properties_map map[]  = {
 590                 { "Name",               "s",     NULL,                     offsetof(UserStatusInfo, name)                },
 591                 { "Linger",             "b",     NULL,                     offsetof(UserStatusInfo, linger)              },
 592                 { "Slice",              "s",     NULL,                     offsetof(UserStatusInfo, slice)               },
 593                 { "State",              "s",     NULL,                     offsetof(UserStatusInfo, state)               },
 594                 { "UID",                "u",     NULL,                     offsetof(UserStatusInfo, uid)                 },
 595                 { "Timestamp",          "t",     NULL,                     offsetof(UserStatusInfo, timestamp.realtime)  },
 596                 { "TimestampMonotonic", "t",     NULL,                     offsetof(UserStatusInfo, timestamp.monotonic) },
 597                 { "Display",            "(so)",  prop_map_first_of_struct, offsetof(UserStatusInfo, display)             },
 598                 { "Sessions",           "a(so)", prop_map_sessions_strv,   offsetof(UserStatusInfo, sessions)            },
 599                 {}
 600         };
 601
 602         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 603         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
 604         char since1[FORMAT_TIMESTAMP_RELATIVE_MAX];
 605         char since2[FORMAT_TIMESTAMP_MAX];
 606         const char *s1, *s2;
 607         _cleanup_(user_status_info_clear) UserStatusInfo i = {};
 608         int r;
 609
 610         r = bus_map_all_properties(bus, "org.freedesktop.login1", path, map, BUS_MAP_BOOLEAN_AS_BOOL, &error, &m, &i);
 611         if (r < 0)
 612                 return log_error_errno(r, "Could not get properties: %s", bus_error_message(&error, r));
 613
 614         if (*new_line)
 615                 printf("\n");
 616
 617         *new_line = true;
 618
 619         if (i.name)
 620                 printf("%s (%"PRIu32")\n", i.name, i.uid);
 621         else
 622                 printf("%"PRIu32"\n", i.uid);
 623
 624         s1 = format_timestamp_relative(since1, sizeof(since1), i.timestamp.realtime);
 625         s2 = format_timestamp(since2, sizeof(since2), i.timestamp.realtime);
 626
 627         if (s1)
 628                 printf("\t   Since: %s; %s\n", s2, s1);
 629         else if (s2)
 630                 printf("\t   Since: %s\n", s2);
 631
 632         if (!isempty(i.state))
 633                 printf("\t   State: %s\n", i.state);
 634
 635         if (!strv_isempty(i.sessions)) {
 636                 char **l;
 637                 printf("\tSessions:");
 638
 639                 STRV_FOREACH(l, i.sessions)
 640                         printf(" %s%s",
 641                                streq_ptr(*l, i.display) ? "*" : "",
 642                                *l);
 643
 644                 printf("\n");
 645         }
 646
 647         printf("\t  Linger: %s\n", yes_no(i.linger));
 648
 649         if (i.slice) {
 650                 printf("\t    Unit: %s\n", i.slice);
 651                 show_unit_cgroup(bus, "org.freedesktop.systemd1.Slice", i.slice, 0);
 652
 653                 show_journal_by_unit(
 654                                 stdout,
 655                                 i.slice,
 656                                 arg_output,
 657                                 0,
 658                                 i.timestamp.monotonic,
 659                                 arg_lines,
 660                                 0,
 661                                 get_output_flags() | OUTPUT_BEGIN_NEWLINE,
 662                                 SD_JOURNAL_LOCAL_ONLY,
 663                                 true,
 664                                 NULL);
 665         }
 666
 667         return 0;
 668 }
 669
 670 static int print_seat_status_info(sd_bus *bus, const char *path, bool *new_line) {
 671
 672         static const struct bus_properties_map map[]  = {
 673                 { "Id",            "s",     NULL, offsetof(SeatStatusInfo, id) },
 674                 { "ActiveSession", "(so)",  prop_map_first_of_struct, offsetof(SeatStatusInfo, active_session) },
 675                 { "Sessions",      "a(so)", prop_map_sessions_strv, offsetof(SeatStatusInfo, sessions) },
 676                 {}
 677         };
 678
 679         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 680         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
 681         _cleanup_(seat_status_info_clear) SeatStatusInfo i = {};
 682         int r;
 683
 684         r = bus_map_all_properties(bus, "org.freedesktop.login1", path, map, 0, &error, &m, &i);
 685         if (r < 0)
 686                 return log_error_errno(r, "Could not get properties: %s", bus_error_message(&error, r));
 687
 688         if (*new_line)
 689                 printf("\n");
 690
 691         *new_line = true;
 692
 693         printf("%s\n", strna(i.id));
 694
 695         if (!strv_isempty(i.sessions)) {
 696                 char **l;
 697                 printf("\tSessions:");
 698
 699                 STRV_FOREACH(l, i.sessions) {
 700                         if (streq_ptr(*l, i.active_session))
 701                                 printf(" *%s", *l);
 702                         else
 703                                 printf(" %s", *l);
 704                 }
 705
 706                 printf("\n");
 707         }
 708
 709         if (arg_transport == BUS_TRANSPORT_LOCAL) {
 710                 unsigned c;
 711
 712                 c = columns();
 713                 if (c > 21)
 714                         c -= 21;
 715                 else
 716                         c = 0;
 717
 718                 printf("\t Devices:\n");
 719
 720                 show_sysfs(i.id, "\t\t  ", c, get_output_flags());
 721         }
 722
 723         return 0;
 724 }
 725
 726 #define property(name, fmt, ...)                                        \
 727         do {                                                            \
 728                 if (value)                                              \
 729                         printf(fmt "\n", __VA_ARGS__);                  \
 730                 else                                                    \
 731                         printf("%s=" fmt "\n", name, __VA_ARGS__);      \
 732         } while (0)
 733
 734 static int print_property(const char *name, sd_bus_message *m, bool value, bool all) {
 735         char type;
 736         const char *contents;
 737         int r;
 738
 739         assert(name);
 740         assert(m);
 741
 742         r = sd_bus_message_peek_type(m, &type, &contents);
 743         if (r < 0)
 744                 return r;
 745
 746         switch (type) {
 747
 748         case SD_BUS_TYPE_STRUCT:
 749
 750                 if (contents[0] == SD_BUS_TYPE_STRING && STR_IN_SET(name, "Display", "Seat", "ActiveSession")) {
 751                         const char *s;
 752
 753                         r = sd_bus_message_read(m, "(so)", &s, NULL);
 754                         if (r < 0)
 755                                 return bus_log_parse_error(r);
 756
 757                         if (all || !isempty(s))
 758                                 property(name, "%s", s);
 759
 760                         return 1;
 761
 762                 } else if (contents[0] == SD_BUS_TYPE_UINT32 && streq(name, "User")) {
 763                         uint32_t uid;
 764
 765                         r = sd_bus_message_read(m, "(uo)", &uid, NULL);
 766                         if (r < 0)
 767                                 return bus_log_parse_error(r);
 768
 769                         if (!uid_is_valid(uid)) {
 770                                 log_error("Invalid user ID: " UID_FMT, uid);
 771                                 return -EINVAL;
 772                         }
 773
 774                         property(name, UID_FMT, uid);
 775                         return 1;
 776                 }
 777                 break;
 778
 779         case SD_BUS_TYPE_ARRAY:
 780
 781                 if (contents[0] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "Sessions")) {
 782                         const char *s;
 783                         bool space = false;
 784
 785                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(so)");
 786                         if (r < 0)
 787                                 return bus_log_parse_error(r);
 788
 789                         if (!value)
 790                                 printf("%s=", name);
 791
 792                         while ((r = sd_bus_message_read(m, "(so)", &s, NULL)) > 0) {
 793                                 printf("%s%s", space ? " " : "", s);
 794                                 space = true;
 795                         }
 796
 797                         if (space || !value)
 798                                 printf("\n");
 799
 800                         if (r < 0)
 801                                 return bus_log_parse_error(r);
 802
 803                         r = sd_bus_message_exit_container(m);
 804                         if (r < 0)
 805                                 return bus_log_parse_error(r);
 806
 807                         return 1;
 808                 }
 809                 break;
 810         }
 811
 812         return 0;
 813 }
 814
 815 static int show_properties(sd_bus *bus, const char *path, bool *new_line) {
 816         int r;
 817
 818         assert(bus);
 819         assert(path);
 820         assert(new_line);
 821
 822         if (*new_line)
 823                 printf("\n");
 824
 825         *new_line = true;
 826
 827         r = bus_print_all_properties(bus, "org.freedesktop.login1", path, print_property, arg_property, arg_value, arg_all, NULL);
 828         if (r < 0)
 829                 return bus_log_parse_error(r);
 830
 831         return 0;
 832 }
 833
 834 static int show_session(int argc, char *argv[], void *userdata) {
 835         bool properties, new_line = false;
 836         sd_bus *bus = userdata;
 837         int r, i;
 838         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 839         _cleanup_free_ char *path = NULL;
 840
 841         assert(bus);
 842         assert(argv);
 843
 844         properties = !strstr(argv[0], "status");
 845
 846         (void) pager_open(arg_no_pager, false);
 847
 848         if (argc <= 1) {
 849                 const char *session, *p = "/org/freedesktop/login1/session/self";
 850
 851                 if (properties)
 852                         /* If no argument is specified inspect the manager itself */
 853                         return show_properties(bus, "/org/freedesktop/login1", &new_line);
 854
 855                 /* And in the pretty case, show data of the calling session */
 856                 session = getenv("XDG_SESSION_ID");
 857                 if (session) {
 858                         r = get_session_path(bus, session, &error, &path);
 859                         if (r < 0)
 860                                 return log_error_errno(r, "Failed to get session path: %s", bus_error_message(&error, r));
 861
 862                         p = path;
 863                 }
 864
 865                 return print_session_status_info(bus, p, &new_line);
 866         }
 867
 868         for (i = 1; i < argc; i++) {
 869                 r = get_session_path(bus, argv[i], &error, &path);
 870                 if (r < 0)
 871                         return log_error_errno(r, "Failed to get session path: %s", bus_error_message(&error, r));
 872
 873                 if (properties)
 874                         r = show_properties(bus, path, &new_line);
 875                 else
 876                         r = print_session_status_info(bus, path, &new_line);
 877
 878                 if (r < 0)
 879                         return r;
 880         }
 881
 882         return 0;
 883 }
 884
 885 static int show_user(int argc, char *argv[], void *userdata) {
 886         bool properties, new_line = false;
 887         sd_bus *bus = userdata;
 888         int r, i;
 889
 890         assert(bus);
 891         assert(argv);
 892
 893         properties = !strstr(argv[0], "status");
 894
 895         (void) pager_open(arg_no_pager, false);
 896
 897         if (argc <= 1) {
 898                 /* If not argument is specified inspect the manager
 899                  * itself */
 900                 if (properties)
 901                         return show_properties(bus, "/org/freedesktop/login1", &new_line);
 902
 903                 return print_user_status_info(bus, "/org/freedesktop/login1/user/self", &new_line);
 904         }
 905
 906         for (i = 1; i < argc; i++) {
 907                 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 908                 _cleanup_(sd_bus_message_unrefp) sd_bus_message * reply = NULL;
 909                 const char *path = NULL;
 910                 uid_t uid;
 911
 912                 r = get_user_creds((const char**) (argv+i), &uid, NULL, NULL, NULL);
 913                 if (r < 0)
 914                         return log_error_errno(r, "Failed to look up user %s: %m", argv[i]);
 915
 916                 r = sd_bus_call_method(
 917                                 bus,
 918                                 "org.freedesktop.login1",
 919                                 "/org/freedesktop/login1",
 920                                 "org.freedesktop.login1.Manager",
 921                                 "GetUser",
 922                                 &error, &reply,
 923                                 "u", (uint32_t) uid);
 924                 if (r < 0)
 925                         return log_error_errno(r, "Failed to get user: %s", bus_error_message(&error, r));
 926
 927                 r = sd_bus_message_read(reply, "o", &path);
 928                 if (r < 0)
 929                         return bus_log_parse_error(r);
 930
 931                 if (properties)
 932                         r = show_properties(bus, path, &new_line);
 933                 else
 934                         r = print_user_status_info(bus, path, &new_line);
 935
 936                 if (r < 0)
 937                         return r;
 938         }
 939
 940         return 0;
 941 }
 942
 943 static int show_seat(int argc, char *argv[], void *userdata) {
 944         bool properties, new_line = false;
 945         sd_bus *bus = userdata;
 946         int r, i;
 947
 948         assert(bus);
 949         assert(argv);
 950
 951         properties = !strstr(argv[0], "status");
 952
 953         (void) pager_open(arg_no_pager, false);
 954
 955         if (argc <= 1) {
 956                 /* If not argument is specified inspect the manager
 957                  * itself */
 958                 if (properties)
 959                         return show_properties(bus, "/org/freedesktop/login1", &new_line);
 960
 961                 return print_seat_status_info(bus, "/org/freedesktop/login1/seat/self", &new_line);
 962         }
 963
 964         for (i = 1; i < argc; i++) {
 965                 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 966                 _cleanup_(sd_bus_message_unrefp) sd_bus_message * reply = NULL;
 967                 const char *path = NULL;
 968
 969                 r = sd_bus_call_method(
 970                                 bus,
 971                                 "org.freedesktop.login1",
 972                                 "/org/freedesktop/login1",
 973                                 "org.freedesktop.login1.Manager",
 974                                 "GetSeat",
 975                                 &error, &reply,
 976                                 "s", argv[i]);
 977                 if (r < 0)
 978                         return log_error_errno(r, "Failed to get seat: %s", bus_error_message(&error, r));
 979
 980                 r = sd_bus_message_read(reply, "o", &path);
 981                 if (r < 0)
 982                         return bus_log_parse_error(r);
 983
 984                 if (properties)
 985                         r = show_properties(bus, path, &new_line);
 986                 else
 987                         r = print_seat_status_info(bus, path, &new_line);
 988
 989                 if (r < 0)
 990                         return r;
 991         }
 992
 993         return 0;
 994 }
 995
 996 static int activate(int argc, char *argv[], void *userdata) {
 997         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 998         sd_bus *bus = userdata;
 999         char *short_argv[3];
1000         int r, i;
1001
1002         assert(bus);
1003         assert(argv);
1004
1005         polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
1006
1007         if (argc < 2) {
1008                 /* No argument? Let's either use $XDG_SESSION_ID (if specified), or an empty
1009                  * session name, in which case logind will try to guess our session. */
1010
1011                 short_argv[0] = argv[0];
1012                 short_argv[1] = getenv("XDG_SESSION_ID") ?: (char*) "";
1013                 short_argv[2] = NULL;
1014
1015                 argv = short_argv;
1016                 argc = 2;
1017         }
1018
1019         for (i = 1; i < argc; i++) {
1020
1021                 r = sd_bus_call_method(
1022                                 bus,
1023                                 "org.freedesktop.login1",
1024                                 "/org/freedesktop/login1",
1025                                 "org.freedesktop.login1.Manager",
1026                                 streq(argv[0], "lock-session")      ? "LockSession" :
1027                                 streq(argv[0], "unlock-session")    ? "UnlockSession" :
1028                                 streq(argv[0], "terminate-session") ? "TerminateSession" :
1029                                                                       "ActivateSession",
1030                                 &error, NULL,
1031                                 "s", argv[i]);
1032                 if (r < 0)
1033                         return log_error_errno(r, "Failed to issue method call: %s", bus_error_message(&error, -r));
1034         }
1035
1036         return 0;
1037 }
1038
1039 static int kill_session(int argc, char *argv[], void *userdata) {
1040         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1041         sd_bus *bus = userdata;
1042         int r, i;
1043
1044         assert(bus);
1045         assert(argv);
1046
1047         polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
1048
1049         if (!arg_kill_who)
1050                 arg_kill_who = "all";
1051
1052         for (i = 1; i < argc; i++) {
1053
1054                 r = sd_bus_call_method(
1055                         bus,
1056                         "org.freedesktop.login1",
1057                         "/org/freedesktop/login1",
1058                         "org.freedesktop.login1.Manager",
1059                         "KillSession",
1060                         &error, NULL,
1061                         "ssi", argv[i], arg_kill_who, arg_signal);
1062                 if (r < 0)
1063                         return log_error_errno(r, "Could not kill session: %s", bus_error_message(&error, -r));
1064         }
1065
1066         return 0;
1067 }
1068
1069 static int enable_linger(int argc, char *argv[], void *userdata) {
1070         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1071         sd_bus *bus = userdata;
1072         char* short_argv[3];
1073         bool b;
1074         int r, i;
1075
1076         assert(bus);
1077         assert(argv);
1078
1079         polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
1080
1081         b = streq(argv[0], "enable-linger");
1082
1083         if (argc < 2) {
1084                 /* No argument? Let's use an empty user name,
1085                  * then logind will use our user. */
1086
1087                 short_argv[0] = argv[0];
1088                 short_argv[1] = (char*) "";
1089                 short_argv[2] = NULL;
1090                 argv = short_argv;
1091                 argc = 2;
1092         }
1093
1094         for (i = 1; i < argc; i++) {
1095                 uid_t uid;
1096
1097                 if (isempty(argv[i]))
1098                         uid = UID_INVALID;
1099                 else {
1100                         r = get_user_creds((const char**) (argv+i), &uid, NULL, NULL, NULL);
1101                         if (r < 0)
1102                                 return log_error_errno(r, "Failed to look up user %s: %m", argv[i]);
1103                 }
1104
1105                 r = sd_bus_call_method(
1106                         bus,
1107                         "org.freedesktop.login1",
1108                         "/org/freedesktop/login1",
1109                         "org.freedesktop.login1.Manager",
1110                         "SetUserLinger",
1111                         &error, NULL,
1112                         "ubb", (uint32_t) uid, b, true);
1113                 if (r < 0)
1114                         return log_error_errno(r, "Could not enable linger: %s", bus_error_message(&error, -r));
1115         }
1116
1117         return 0;
1118 }
1119
1120 static int terminate_user(int argc, char *argv[], void *userdata) {
1121         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1122         sd_bus *bus = userdata;
1123         int r, i;
1124
1125         assert(bus);
1126         assert(argv);
1127
1128         polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
1129
1130         for (i = 1; i < argc; i++) {
1131                 uid_t uid;
1132
1133                 r = get_user_creds((const char**) (argv+i), &uid, NULL, NULL, NULL);
1134                 if (r < 0)
1135                         return log_error_errno(r, "Failed to look up user %s: %m", argv[i]);
1136
1137                 r = sd_bus_call_method(
1138                         bus,
1139                         "org.freedesktop.login1",
1140                         "/org/freedesktop/login1",
1141                         "org.freedesktop.login1.Manager",
1142                         "TerminateUser",
1143                         &error, NULL,
1144                         "u", (uint32_t) uid);
1145                 if (r < 0)
1146                         return log_error_errno(r, "Could not terminate user: %s", bus_error_message(&error, -r));
1147         }
1148
1149         return 0;
1150 }
1151
1152 static int kill_user(int argc, char *argv[], void *userdata) {
1153         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1154         sd_bus *bus = userdata;
1155         int r, i;
1156
1157         assert(bus);
1158         assert(argv);
1159
1160         polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
1161
1162         if (!arg_kill_who)
1163                 arg_kill_who = "all";
1164
1165         for (i = 1; i < argc; i++) {
1166                 uid_t uid;
1167
1168                 r = get_user_creds((const char**) (argv+i), &uid, NULL, NULL, NULL);
1169                 if (r < 0)
1170                         return log_error_errno(r, "Failed to look up user %s: %m", argv[i]);
1171
1172                 r = sd_bus_call_method(
1173                         bus,
1174                         "org.freedesktop.login1",
1175                         "/org/freedesktop/login1",
1176                         "org.freedesktop.login1.Manager",
1177                         "KillUser",
1178                         &error, NULL,
1179                         "ui", (uint32_t) uid, arg_signal);
1180                 if (r < 0)
1181                         return log_error_errno(r, "Could not kill user: %s", bus_error_message(&error, -r));
1182         }
1183
1184         return 0;
1185 }
1186
1187 static int attach(int argc, char *argv[], void *userdata) {
1188         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1189         sd_bus *bus = userdata;
1190         int r, i;
1191
1192         assert(bus);
1193         assert(argv);
1194
1195         polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
1196
1197         for (i = 2; i < argc; i++) {
1198
1199                 r = sd_bus_call_method(
1200                         bus,
1201                         "org.freedesktop.login1",
1202                         "/org/freedesktop/login1",
1203                         "org.freedesktop.login1.Manager",
1204                         "AttachDevice",
1205                         &error, NULL,
1206                         "ssb", argv[1], argv[i], true);
1207
1208                 if (r < 0)
1209                         return log_error_errno(r, "Could not attach device: %s", bus_error_message(&error, -r));
1210         }
1211
1212         return 0;
1213 }
1214
1215 static int flush_devices(int argc, char *argv[], void *userdata) {
1216         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1217         sd_bus *bus = userdata;
1218         int r;
1219
1220         assert(bus);
1221         assert(argv);
1222
1223         polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
1224
1225         r = sd_bus_call_method(
1226                         bus,
1227                         "org.freedesktop.login1",
1228                         "/org/freedesktop/login1",
1229                         "org.freedesktop.login1.Manager",
1230                         "FlushDevices",
1231                         &error, NULL,
1232                         "b", true);
1233         if (r < 0)
1234                 return log_error_errno(r, "Could not flush devices: %s", bus_error_message(&error, -r));
1235
1236         return 0;
1237 }
1238
1239 static int lock_sessions(int argc, char *argv[], void *userdata) {
1240         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1241         sd_bus *bus = userdata;
1242         int r;
1243
1244         assert(bus);
1245         assert(argv);
1246
1247         polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
1248
1249         r = sd_bus_call_method(
1250                         bus,
1251                         "org.freedesktop.login1",
1252                         "/org/freedesktop/login1",
1253                         "org.freedesktop.login1.Manager",
1254                         streq(argv[0], "lock-sessions") ? "LockSessions" : "UnlockSessions",
1255                         &error, NULL,
1256                         NULL);
1257         if (r < 0)
1258                 return log_error_errno(r, "Could not lock sessions: %s", bus_error_message(&error, -r));
1259
1260         return 0;
1261 }
1262
1263 static int terminate_seat(int argc, char *argv[], void *userdata) {
1264         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1265         sd_bus *bus = userdata;
1266         int r, i;
1267
1268         assert(bus);
1269         assert(argv);
1270
1271         polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
1272
1273         for (i = 1; i < argc; i++) {
1274
1275                 r = sd_bus_call_method(
1276                         bus,
1277                         "org.freedesktop.login1",
1278                         "/org/freedesktop/login1",
1279                         "org.freedesktop.login1.Manager",
1280                         "TerminateSeat",
1281                         &error, NULL,
1282                         "s", argv[i]);
1283                 if (r < 0)
1284                         return log_error_errno(r, "Could not terminate seat: %s", bus_error_message(&error, -r));
1285         }
1286
1287         return 0;
1288 }
1289
1290 static int help(int argc, char *argv[], void *userdata) {
1291         _cleanup_free_ char *link = NULL;
1292         int r;
1293
1294         (void) pager_open(arg_no_pager, false);
1295
1296         r = terminal_urlify_man("loginctl", "1", &link);
1297         if (r < 0)
1298                 return log_oom();
1299
1300         printf("%s [OPTIONS...] {COMMAND} ...\n\n"
1301                "Send control commands to or query the login manager.\n\n"
1302                "  -h --help                Show this help\n"
1303                "     --version             Show package version\n"
1304                "     --no-pager            Do not pipe output into a pager\n"
1305                "     --no-legend           Do not show the headers and footers\n"
1306                "     --no-ask-password     Don't prompt for password\n"
1307                "  -H --host=[USER@]HOST    Operate on remote host\n"
1308                "  -M --machine=CONTAINER   Operate on local container\n"
1309                "  -p --property=NAME       Show only properties by this name\n"
1310                "  -a --all                 Show all properties, including empty ones\n"
1311                "     --value               When showing properties, only print the value\n"
1312                "  -l --full                Do not ellipsize output\n"
1313                "     --kill-who=WHO        Who to send signal to\n"
1314                "  -s --signal=SIGNAL       Which signal to send\n"
1315                "  -n --lines=INTEGER       Number of journal entries to show\n"
1316                "  -o --output=STRING       Change journal output mode (short, short-precise,\n"
1317                "                             short-iso, short-iso-precise, short-full,\n"
1318                "                             short-monotonic, short-unix, verbose, export,\n"
1319                "                             json, json-pretty, json-sse, cat)\n"
1320                "Session Commands:\n"
1321                "  list-sessions            List sessions\n"
1322                "  session-status [ID...]   Show session status\n"
1323                "  show-session [ID...]     Show properties of sessions or the manager\n"
1324                "  activate [ID]            Activate a session\n"
1325                "  lock-session [ID...]     Screen lock one or more sessions\n"
1326                "  unlock-session [ID...]   Screen unlock one or more sessions\n"
1327                "  lock-sessions            Screen lock all current sessions\n"
1328                "  unlock-sessions          Screen unlock all current sessions\n"
1329                "  terminate-session ID...  Terminate one or more sessions\n"
1330                "  kill-session ID...       Send signal to processes of a session\n\n"
1331                "User Commands:\n"
1332                "  list-users               List users\n"
1333                "  user-status [USER...]    Show user status\n"
1334                "  show-user [USER...]      Show properties of users or the manager\n"
1335                "  enable-linger [USER...]  Enable linger state of one or more users\n"
1336                "  disable-linger [USER...] Disable linger state of one or more users\n"
1337                "  terminate-user USER...   Terminate all sessions of one or more users\n"
1338                "  kill-user USER...        Send signal to processes of a user\n\n"
1339                "Seat Commands:\n"
1340                "  list-seats               List seats\n"
1341                "  seat-status [NAME...]    Show seat status\n"
1342                "  show-seat [NAME...]      Show properties of seats or the manager\n"
1343                "  attach NAME DEVICE...    Attach one or more devices to a seat\n"
1344                "  flush-devices            Flush all device associations\n"
1345                "  terminate-seat NAME...   Terminate all sessions on one or more seats\n"
1346                "\nSee the %s for details.\n"
1347                , program_invocation_short_name
1348                , link
1349         );
1350
1351         return 0;
1352 }
1353
1354 static int parse_argv(int argc, char *argv[]) {
1355
1356         enum {
1357                 ARG_VERSION = 0x100,
1358                 ARG_VALUE,
1359                 ARG_NO_PAGER,
1360                 ARG_NO_LEGEND,
1361                 ARG_KILL_WHO,
1362                 ARG_NO_ASK_PASSWORD,
1363         };
1364
1365         static const struct option options[] = {
1366                 { "help",            no_argument,       NULL, 'h'                 },
1367                 { "version",         no_argument,       NULL, ARG_VERSION         },
1368                 { "property",        required_argument, NULL, 'p'                 },
1369                 { "all",             no_argument,       NULL, 'a'                 },
1370                 { "value",           no_argument,       NULL, ARG_VALUE           },
1371                 { "full",            no_argument,       NULL, 'l'                 },
1372                 { "no-pager",        no_argument,       NULL, ARG_NO_PAGER        },
1373                 { "no-legend",       no_argument,       NULL, ARG_NO_LEGEND       },
1374                 { "kill-who",        required_argument, NULL, ARG_KILL_WHO        },
1375                 { "signal",          required_argument, NULL, 's'                 },
1376                 { "host",            required_argument, NULL, 'H'                 },
1377                 { "machine",         required_argument, NULL, 'M'                 },
1378                 { "no-ask-password", no_argument,       NULL, ARG_NO_ASK_PASSWORD },
1379                 { "lines",           required_argument, NULL, 'n'                 },
1380                 { "output",          required_argument, NULL, 'o'                 },
1381                 {}
1382         };
1383
1384         int c, r;
1385
1386         assert(argc >= 0);
1387         assert(argv);
1388
1389         while ((c = getopt_long(argc, argv, "hp:als:H:M:n:o:", options, NULL)) >= 0)
1390
1391                 switch (c) {
1392
1393                 case 'h':
1394                         return help(0, NULL, NULL);
1395
1396                 case ARG_VERSION:
1397                         return version();
1398
1399                 case 'p': {
1400                         r = strv_extend(&arg_property, optarg);
1401                         if (r < 0)
1402                                 return log_oom();
1403
1404                         /* If the user asked for a particular
1405                          * property, show it to him, even if it is
1406                          * empty. */
1407                         arg_all = true;
1408                         break;
1409                 }
1410
1411                 case 'a':
1412                         arg_all = true;
1413                         break;
1414
1415                 case ARG_VALUE:
1416                         arg_value = true;
1417                         break;
1418
1419                 case 'l':
1420                         arg_full = true;
1421                         break;
1422
1423                 case 'n':
1424                         if (safe_atou(optarg, &arg_lines) < 0) {
1425                                 log_error("Failed to parse lines '%s'", optarg);
1426                                 return -EINVAL;
1427                         }
1428                         break;
1429
1430                 case 'o':
1431                         if (streq(optarg, "help")) {
1432                                 DUMP_STRING_TABLE(output_mode, OutputMode, _OUTPUT_MODE_MAX);
1433                                 return 0;
1434                         }
1435
1436                         arg_output = output_mode_from_string(optarg);
1437                         if (arg_output < 0) {
1438                                 log_error("Unknown output '%s'.", optarg);
1439                                 return -EINVAL;
1440                         }
1441                         break;
1442
1443                 case ARG_NO_PAGER:
1444                         arg_no_pager = true;
1445                         break;
1446
1447                 case ARG_NO_LEGEND:
1448                         arg_legend = false;
1449                         break;
1450
1451                 case ARG_NO_ASK_PASSWORD:
1452                         arg_ask_password = false;
1453                         break;
1454
1455                 case ARG_KILL_WHO:
1456                         arg_kill_who = optarg;
1457                         break;
1458
1459                 case 's':
1460                         if (streq(optarg, "help")) {
1461                                 DUMP_STRING_TABLE(signal, int, _NSIG);
1462                                 return 0;
1463                         }
1464
1465                         arg_signal = signal_from_string(optarg);
1466                         if (arg_signal < 0) {
1467                                 log_error("Failed to parse signal string %s.", optarg);
1468                                 return -EINVAL;
1469                         }
1470                         break;
1471
1472                 case 'H':
1473                         arg_transport = BUS_TRANSPORT_REMOTE;
1474                         arg_host = optarg;
1475                         break;
1476
1477                 case 'M':
1478                         arg_transport = BUS_TRANSPORT_MACHINE;
1479                         arg_host = optarg;
1480                         break;
1481
1482                 case '?':
1483                         return -EINVAL;
1484
1485                 default:
1486                         assert_not_reached("Unhandled option");
1487                 }
1488
1489         return 1;
1490 }
1491
1492 static int loginctl_main(int argc, char *argv[], sd_bus *bus) {
1493
1494         static const Verb verbs[] = {
1495                 { "help",              VERB_ANY, VERB_ANY, 0,            help              },
1496                 { "list-sessions",     VERB_ANY, 1,        VERB_DEFAULT, list_sessions     },
1497                 { "session-status",    VERB_ANY, VERB_ANY, 0,            show_session      },
1498                 { "show-session",      VERB_ANY, VERB_ANY, 0,            show_session      },
1499                 { "activate",          VERB_ANY, 2,        0,            activate          },
1500                 { "lock-session",      VERB_ANY, VERB_ANY, 0,            activate          },
1501                 { "unlock-session",    VERB_ANY, VERB_ANY, 0,            activate          },
1502                 { "lock-sessions",     VERB_ANY, 1,        0,            lock_sessions     },
1503                 { "unlock-sessions",   VERB_ANY, 1,        0,            lock_sessions     },
1504                 { "terminate-session", 2,        VERB_ANY, 0,            activate          },
1505                 { "kill-session",      2,        VERB_ANY, 0,            kill_session      },
1506                 { "list-users",        VERB_ANY, 1,        0,            list_users        },
1507                 { "user-status",       VERB_ANY, VERB_ANY, 0,            show_user         },
1508                 { "show-user",         VERB_ANY, VERB_ANY, 0,            show_user         },
1509                 { "enable-linger",     VERB_ANY, VERB_ANY, 0,            enable_linger     },
1510                 { "disable-linger",    VERB_ANY, VERB_ANY, 0,            enable_linger     },
1511                 { "terminate-user",    2,        VERB_ANY, 0,            terminate_user    },
1512                 { "kill-user",         2,        VERB_ANY, 0,            kill_user         },
1513                 { "list-seats",        VERB_ANY, 1,        0,            list_seats        },
1514                 { "seat-status",       VERB_ANY, VERB_ANY, 0,            show_seat         },
1515                 { "show-seat",         VERB_ANY, VERB_ANY, 0,            show_seat         },
1516                 { "attach",            3,        VERB_ANY, 0,            attach            },
1517                 { "flush-devices",     VERB_ANY, 1,        0,            flush_devices     },
1518                 { "terminate-seat",    2,        VERB_ANY, 0,            terminate_seat    },
1519                 {}
1520         };
1521
1522         return dispatch_verb(argc, argv, verbs, bus);
1523 }
1524
1525 int main(int argc, char *argv[]) {
1526         sd_bus *bus = NULL;
1527         int r;
1528
1529         setlocale(LC_ALL, "");
1530         log_parse_environment();
1531         log_open();
1532         sigbus_install();
1533
1534         r = parse_argv(argc, argv);
1535         if (r <= 0)
1536                 goto finish;
1537
1538         r = bus_connect_transport(arg_transport, arg_host, false, &bus);
1539         if (r < 0) {
1540                 log_error_errno(r, "Failed to create bus connection: %m");
1541                 goto finish;
1542         }
1543
1544         sd_bus_set_allow_interactive_authorization(bus, arg_ask_password);
1545
1546         r = loginctl_main(argc, argv, bus);
1547
1548 finish:
1549         /* make sure we terminate the bus connection first, and then close the
1550          * pager, see issue #3543 for the details. */
1551         sd_bus_flush_close_unref(bus);
1552         pager_close();
1553         polkit_agent_close();
1554
1555         strv_free(arg_property);
1556
1557         return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
1558 }