src/login/loginctl.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 /***
   3   This file is part of systemd.
   4
   5   Copyright 2010 Lennart Poettering
   6 ***/
   7
   8 #include <errno.h>
   9 #include <getopt.h>
  10 #include <locale.h>
  11 #include <string.h>
  12 #include <unistd.h>
  13
  14 #include "sd-bus.h"
  15
  16 #include "alloc-util.h"
  17 #include "bus-error.h"
  18 #include "bus-unit-util.h"
  19 #include "bus-util.h"
  20 #include "cgroup-show.h"
  21 #include "cgroup-util.h"
  22 #include "format-table.h"
  23 #include "log.h"
  24 #include "logs-show.h"
  25 #include "macro.h"
  26 #include "pager.h"
  27 #include "parse-util.h"
  28 #include "process-util.h"
  29 #include "sigbus.h"
  30 #include "signal-util.h"
  31 #include "spawn-polkit-agent.h"
  32 #include "strv.h"
  33 #include "sysfs-show.h"
  34 #include "terminal-util.h"
  35 #include "unit-name.h"
  36 #include "user-util.h"
  37 #include "util.h"
  38 #include "verbs.h"
  39
  40 static char **arg_property = NULL;
  41 static bool arg_all = false;
  42 static bool arg_value = false;
  43 static bool arg_full = false;
  44 static bool arg_no_pager = false;
  45 static bool arg_legend = true;
  46 static const char *arg_kill_who = NULL;
  47 static int arg_signal = SIGTERM;
  48 static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;
  49 static char *arg_host = NULL;
  50 static bool arg_ask_password = true;
  51 static unsigned arg_lines = 10;
  52 static OutputMode arg_output = OUTPUT_SHORT;
  53
  54 static OutputFlags get_output_flags(void) {
  55
  56         return
  57                 arg_all * OUTPUT_SHOW_ALL |
  58                 (arg_full || !on_tty() || pager_have()) * OUTPUT_FULL_WIDTH |
  59                 colors_enabled() * OUTPUT_COLOR;
  60 }
  61
  62 static int get_session_path(sd_bus *bus, const char *session_id, sd_bus_error *error, char **path) {
  63         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
  64         int r;
  65         char *ans;
  66
  67         r = sd_bus_call_method(
  68                         bus,
  69                         "org.freedesktop.login1",
  70                         "/org/freedesktop/login1",
  71                         "org.freedesktop.login1.Manager",
  72                         "GetSession",
  73                         error, &reply,
  74                         "s", session_id);
  75         if (r < 0)
  76                 return r;
  77
  78         r = sd_bus_message_read(reply, "o", &ans);
  79         if (r < 0)
  80                 return r;
  81
  82         ans = strdup(ans);
  83         if (!ans)
  84                 return -ENOMEM;
  85
  86         *path = ans;
  87         return 0;
  88 }
  89
  90 static int show_table(Table *table, const char *word) {
  91         int r;
  92
  93         assert(table);
  94         assert(word);
  95
  96         if (table_get_rows(table) > 1) {
  97                 r = table_set_sort(table, (size_t) 0, (size_t) -1);
  98                 if (r < 0)
  99                         return log_error_errno(r, "Failed to sort table: %m");
 100
 101                 table_set_header(table, arg_legend);
 102
 103                 r = table_print(table, NULL);
 104                 if (r < 0)
 105                         return log_error_errno(r, "Failed to show table: %m");
 106         }
 107
 108         if (arg_legend) {
 109                 if (table_get_rows(table) > 1)
 110                         printf("\n%zu %s listed.\n", table_get_rows(table) - 1, word);
 111                 else
 112                         printf("No %s.\n", word);
 113         }
 114
 115         return 0;
 116 }
 117
 118 static int list_sessions(int argc, char *argv[], void *userdata) {
 119         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 120         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 121         _cleanup_(table_unrefp) Table *table = NULL;
 122         sd_bus *bus = userdata;
 123         int r;
 124
 125         assert(bus);
 126         assert(argv);
 127
 128         (void) pager_open(arg_no_pager, false);
 129
 130         r = sd_bus_call_method(
 131                         bus,
 132                         "org.freedesktop.login1",
 133                         "/org/freedesktop/login1",
 134                         "org.freedesktop.login1.Manager",
 135                         "ListSessions",
 136                         &error, &reply,
 137                         NULL);
 138         if (r < 0)
 139                 return log_error_errno(r, "Failed to list sessions: %s", bus_error_message(&error, r));
 140
 141         r = sd_bus_message_enter_container(reply, 'a', "(susso)");
 142         if (r < 0)
 143                 return bus_log_parse_error(r);
 144
 145         table = table_new("SESSION", "UID", "USER", "SEAT", "TTY");
 146         if (!table)
 147                 return log_oom();
 148
 149         /* Right-align the first two fields (since they are numeric) */
 150         (void) table_set_align_percent(table, TABLE_HEADER_CELL(0), 100);
 151         (void) table_set_align_percent(table, TABLE_HEADER_CELL(1), 100);
 152
 153         for (;;) {
 154                 _cleanup_(sd_bus_error_free) sd_bus_error error_tty = SD_BUS_ERROR_NULL;
 155                 _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply_tty = NULL;
 156                 const char *id, *user, *seat, *object, *tty = NULL;
 157                 uint32_t uid;
 158
 159                 r = sd_bus_message_read(reply, "(susso)", &id, &uid, &user, &seat, &object);
 160                 if (r < 0)
 161                         return bus_log_parse_error(r);
 162                 if (r == 0)
 163                         break;
 164
 165                 r = sd_bus_get_property(
 166                                 bus,
 167                                 "org.freedesktop.login1",
 168                                 object,
 169                                 "org.freedesktop.login1.Session",
 170                                 "TTY",
 171                                 &error_tty,
 172                                 &reply_tty,
 173                                 "s");
 174                 if (r < 0)
 175                         log_warning_errno(r, "Failed to get TTY for session %s: %s", id, bus_error_message(&error_tty, r));
 176                 else {
 177                         r = sd_bus_message_read(reply_tty, "s", &tty);
 178                         if (r < 0)
 179                                 return bus_log_parse_error(r);
 180                 }
 181
 182                 r = table_add_many(table,
 183                                    TABLE_STRING, id,
 184                                    TABLE_UINT32, uid,
 185                                    TABLE_STRING, user,
 186                                    TABLE_STRING, seat,
 187                                    TABLE_STRING, strna(tty));
 188                 if (r < 0)
 189                         return log_error_errno(r, "Failed to add row to table: %m");
 190         }
 191
 192         r = sd_bus_message_exit_container(reply);
 193         if (r < 0)
 194                 return bus_log_parse_error(r);
 195
 196         return show_table(table, "sessions");
 197 }
 198
 199 static int list_users(int argc, char *argv[], void *userdata) {
 200         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 201         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 202         _cleanup_(table_unrefp) Table *table = NULL;
 203         sd_bus *bus = userdata;
 204         int r;
 205
 206         assert(bus);
 207         assert(argv);
 208
 209         (void) pager_open(arg_no_pager, false);
 210
 211         r = sd_bus_call_method(
 212                         bus,
 213                         "org.freedesktop.login1",
 214                         "/org/freedesktop/login1",
 215                         "org.freedesktop.login1.Manager",
 216                         "ListUsers",
 217                         &error, &reply,
 218                         NULL);
 219         if (r < 0)
 220                 return log_error_errno(r, "Failed to list users: %s", bus_error_message(&error, r));
 221
 222         r = sd_bus_message_enter_container(reply, 'a', "(uso)");
 223         if (r < 0)
 224                 return bus_log_parse_error(r);
 225
 226         table = table_new("UID", "USER");
 227         if (!table)
 228                 return log_oom();
 229
 230         (void) table_set_align_percent(table, TABLE_HEADER_CELL(0), 100);
 231
 232         for (;;) {
 233                 const char *user, *object;
 234                 uint32_t uid;
 235
 236                 r = sd_bus_message_read(reply, "(uso)", &uid, &user, &object);
 237                 if (r < 0)
 238                         return bus_log_parse_error(r);
 239                 if (r == 0)
 240                         break;
 241
 242                 r = table_add_many(table,
 243                                    TABLE_UINT32, uid,
 244                                    TABLE_STRING, user);
 245                 if (r < 0)
 246                         return log_error_errno(r, "Failed to add row to table: %m");
 247         }
 248
 249         r = sd_bus_message_exit_container(reply);
 250         if (r < 0)
 251                 return bus_log_parse_error(r);
 252
 253         return show_table(table, "users");
 254 }
 255
 256 static int list_seats(int argc, char *argv[], void *userdata) {
 257         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 258         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 259         _cleanup_(table_unrefp) Table *table = NULL;
 260         sd_bus *bus = userdata;
 261         int r;
 262
 263         assert(bus);
 264         assert(argv);
 265
 266         (void) pager_open(arg_no_pager, false);
 267
 268         r = sd_bus_call_method(
 269                         bus,
 270                         "org.freedesktop.login1",
 271                         "/org/freedesktop/login1",
 272                         "org.freedesktop.login1.Manager",
 273                         "ListSeats",
 274                         &error, &reply,
 275                         NULL);
 276         if (r < 0)
 277                 return log_error_errno(r, "Failed to list seats: %s", bus_error_message(&error, r));
 278
 279         r = sd_bus_message_enter_container(reply, 'a', "(so)");
 280         if (r < 0)
 281                 return bus_log_parse_error(r);
 282
 283         table = table_new("SEAT");
 284         if (!table)
 285                 return log_oom();
 286
 287         for (;;) {
 288                 const char *seat, *object;
 289
 290                 r = sd_bus_message_read(reply, "(so)", &seat, &object);
 291                 if (r < 0)
 292                         return bus_log_parse_error(r);
 293                 if (r == 0)
 294                         break;
 295
 296                 r = table_add_cell(table, NULL, TABLE_STRING, seat);
 297                 if (r < 0)
 298                         return log_error_errno(r, "Failed to add row to table: %m");
 299         }
 300
 301         r = sd_bus_message_exit_container(reply);
 302         if (r < 0)
 303                 return bus_log_parse_error(r);
 304
 305         return show_table(table, "seats");
 306 }
 307
 308 static int show_unit_cgroup(sd_bus *bus, const char *interface, const char *unit, pid_t leader) {
 309         _cleanup_free_ char *cgroup = NULL;
 310         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 311         unsigned c;
 312         int r;
 313
 314         assert(bus);
 315         assert(unit);
 316
 317         r = show_cgroup_get_unit_path_and_warn(bus, unit, &cgroup);
 318         if (r < 0)
 319                 return r;
 320
 321         if (isempty(cgroup))
 322                 return 0;
 323
 324         c = columns();
 325         if (c > 18)
 326                 c -= 18;
 327         else
 328                 c = 0;
 329
 330         r = unit_show_processes(bus, unit, cgroup, "\t\t  ", c, get_output_flags(), &error);
 331         if (r == -EBADR) {
 332
 333                 if (arg_transport == BUS_TRANSPORT_REMOTE)
 334                         return 0;
 335
 336                 /* Fallback for older systemd versions where the GetUnitProcesses() call is not yet available */
 337
 338                 if (cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, cgroup) != 0 && leader <= 0)
 339                         return 0;
 340
 341                 show_cgroup_and_extra(SYSTEMD_CGROUP_CONTROLLER, cgroup, "\t\t  ", c, &leader, leader > 0, get_output_flags());
 342         } else if (r < 0)
 343                 return log_error_errno(r, "Failed to dump process list: %s", bus_error_message(&error, r));
 344
 345         return 0;
 346 }
 347
 348 typedef struct SessionStatusInfo {
 349         const char *id;
 350         uid_t uid;
 351         const char *name;
 352         struct dual_timestamp timestamp;
 353         unsigned int vtnr;
 354         const char *seat;
 355         const char *tty;
 356         const char *display;
 357         bool remote;
 358         const char *remote_host;
 359         const char *remote_user;
 360         const char *service;
 361         pid_t leader;
 362         const char *type;
 363         const char *class;
 364         const char *state;
 365         const char *scope;
 366         const char *desktop;
 367 } SessionStatusInfo;
 368
 369 typedef struct UserStatusInfo {
 370         uid_t uid;
 371         bool linger;
 372         const char *name;
 373         struct dual_timestamp timestamp;
 374         const char *state;
 375         char **sessions;
 376         const char *display;
 377         const char *slice;
 378 } UserStatusInfo;
 379
 380 typedef struct SeatStatusInfo {
 381         const char *id;
 382         const char *active_session;
 383         char **sessions;
 384 } SeatStatusInfo;
 385
 386 static void user_status_info_clear(UserStatusInfo *info) {
 387         if (info) {
 388                 strv_free(info->sessions);
 389                 zero(*info);
 390         }
 391 }
 392
 393 static void seat_status_info_clear(SeatStatusInfo *info) {
 394         if (info) {
 395                 strv_free(info->sessions);
 396                 zero(*info);
 397         }
 398 }
 399
 400 static int prop_map_first_of_struct(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
 401         const char *contents;
 402         int r;
 403
 404         r = sd_bus_message_peek_type(m, NULL, &contents);
 405         if (r < 0)
 406                 return r;
 407
 408         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_STRUCT, contents);
 409         if (r < 0)
 410                 return r;
 411
 412         r = sd_bus_message_read_basic(m, contents[0], userdata);
 413         if (r < 0)
 414                 return r;
 415
 416         r = sd_bus_message_skip(m, contents+1);
 417         if (r < 0)
 418                 return r;
 419
 420         r = sd_bus_message_exit_container(m);
 421         if (r < 0)
 422                 return r;
 423
 424         return 0;
 425 }
 426
 427 static int prop_map_sessions_strv(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
 428         const char *name;
 429         int r;
 430
 431         assert(bus);
 432         assert(m);
 433
 434         r = sd_bus_message_enter_container(m, 'a', "(so)");
 435         if (r < 0)
 436                 return r;
 437
 438         while ((r = sd_bus_message_read(m, "(so)", &name, NULL)) > 0) {
 439                 r = strv_extend(userdata, name);
 440                 if (r < 0)
 441                         return r;
 442         }
 443         if (r < 0)
 444                 return r;
 445
 446         return sd_bus_message_exit_container(m);
 447 }
 448
 449 static int print_session_status_info(sd_bus *bus, const char *path, bool *new_line) {
 450
 451         static const struct bus_properties_map map[]  = {
 452                 { "Id",                  "s",    NULL,                     offsetof(SessionStatusInfo, id)                  },
 453                 { "Name",                "s",    NULL,                     offsetof(SessionStatusInfo, name)                },
 454                 { "TTY",                 "s",    NULL,                     offsetof(SessionStatusInfo, tty)                 },
 455                 { "Display",             "s",    NULL,                     offsetof(SessionStatusInfo, display)             },
 456                 { "RemoteHost",          "s",    NULL,                     offsetof(SessionStatusInfo, remote_host)         },
 457                 { "RemoteUser",          "s",    NULL,                     offsetof(SessionStatusInfo, remote_user)         },
 458                 { "Service",             "s",    NULL,                     offsetof(SessionStatusInfo, service)             },
 459                 { "Desktop",             "s",    NULL,                     offsetof(SessionStatusInfo, desktop)             },
 460                 { "Type",                "s",    NULL,                     offsetof(SessionStatusInfo, type)                },
 461                 { "Class",               "s",    NULL,                     offsetof(SessionStatusInfo, class)               },
 462                 { "Scope",               "s",    NULL,                     offsetof(SessionStatusInfo, scope)               },
 463                 { "State",               "s",    NULL,                     offsetof(SessionStatusInfo, state)               },
 464                 { "VTNr",                "u",    NULL,                     offsetof(SessionStatusInfo, vtnr)                },
 465                 { "Leader",              "u",    NULL,                     offsetof(SessionStatusInfo, leader)              },
 466                 { "Remote",              "b",    NULL,                     offsetof(SessionStatusInfo, remote)              },
 467                 { "Timestamp",           "t",    NULL,                     offsetof(SessionStatusInfo, timestamp.realtime)  },
 468                 { "TimestampMonotonic",  "t",    NULL,                     offsetof(SessionStatusInfo, timestamp.monotonic) },
 469                 { "User",                "(uo)", prop_map_first_of_struct, offsetof(SessionStatusInfo, uid)                 },
 470                 { "Seat",                "(so)", prop_map_first_of_struct, offsetof(SessionStatusInfo, seat)                },
 471                 {}
 472         };
 473
 474         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 475         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
 476         char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], *s1;
 477         char since2[FORMAT_TIMESTAMP_MAX], *s2;
 478         SessionStatusInfo i = {};
 479         int r;
 480
 481         r = bus_map_all_properties(bus, "org.freedesktop.login1", path, map, BUS_MAP_BOOLEAN_AS_BOOL, &error, &m, &i);
 482         if (r < 0)
 483                 return log_error_errno(r, "Could not get properties: %s", bus_error_message(&error, r));
 484
 485         if (*new_line)
 486                 printf("\n");
 487
 488         *new_line = true;
 489
 490         printf("%s - ", strna(i.id));
 491
 492         if (i.name)
 493                 printf("%s (%"PRIu32")\n", i.name, i.uid);
 494         else
 495                 printf("%"PRIu32"\n", i.uid);
 496
 497         s1 = format_timestamp_relative(since1, sizeof(since1), i.timestamp.realtime);
 498         s2 = format_timestamp(since2, sizeof(since2), i.timestamp.realtime);
 499
 500         if (s1)
 501                 printf("\t   Since: %s; %s\n", s2, s1);
 502         else if (s2)
 503                 printf("\t   Since: %s\n", s2);
 504
 505         if (i.leader > 0) {
 506                 _cleanup_free_ char *t = NULL;
 507
 508                 printf("\t  Leader: %"PRIu32, i.leader);
 509
 510                 get_process_comm(i.leader, &t);
 511                 if (t)
 512                         printf(" (%s)", t);
 513
 514                 printf("\n");
 515         }
 516
 517         if (!isempty(i.seat)) {
 518                 printf("\t    Seat: %s", i.seat);
 519
 520                 if (i.vtnr > 0)
 521                         printf("; vc%u", i.vtnr);
 522
 523                 printf("\n");
 524         }
 525
 526         if (i.tty)
 527                 printf("\t     TTY: %s\n", i.tty);
 528         else if (i.display)
 529                 printf("\t Display: %s\n", i.display);
 530
 531         if (i.remote_host && i.remote_user)
 532                 printf("\t  Remote: %s@%s\n", i.remote_user, i.remote_host);
 533         else if (i.remote_host)
 534                 printf("\t  Remote: %s\n", i.remote_host);
 535         else if (i.remote_user)
 536                 printf("\t  Remote: user %s\n", i.remote_user);
 537         else if (i.remote)
 538                 printf("\t  Remote: Yes\n");
 539
 540         if (i.service) {
 541                 printf("\t Service: %s", i.service);
 542
 543                 if (i.type)
 544                         printf("; type %s", i.type);
 545
 546                 if (i.class)
 547                         printf("; class %s", i.class);
 548
 549                 printf("\n");
 550         } else if (i.type) {
 551                 printf("\t    Type: %s", i.type);
 552
 553                 if (i.class)
 554                         printf("; class %s", i.class);
 555
 556                 printf("\n");
 557         } else if (i.class)
 558                 printf("\t   Class: %s\n", i.class);
 559
 560         if (!isempty(i.desktop))
 561                 printf("\t Desktop: %s\n", i.desktop);
 562
 563         if (i.state)
 564                 printf("\t   State: %s\n", i.state);
 565
 566         if (i.scope) {
 567                 printf("\t    Unit: %s\n", i.scope);
 568                 show_unit_cgroup(bus, "org.freedesktop.systemd1.Scope", i.scope, i.leader);
 569
 570                 if (arg_transport == BUS_TRANSPORT_LOCAL) {
 571
 572                         show_journal_by_unit(
 573                                         stdout,
 574                                         i.scope,
 575                                         arg_output,
 576                                         0,
 577                                         i.timestamp.monotonic,
 578                                         arg_lines,
 579                                         0,
 580                                         get_output_flags() | OUTPUT_BEGIN_NEWLINE,
 581                                         SD_JOURNAL_LOCAL_ONLY,
 582                                         true,
 583                                         NULL);
 584                 }
 585         }
 586
 587         return 0;
 588 }
 589
 590 static int print_user_status_info(sd_bus *bus, const char *path, bool *new_line) {
 591
 592         static const struct bus_properties_map map[]  = {
 593                 { "Name",               "s",     NULL,                     offsetof(UserStatusInfo, name)                },
 594                 { "Linger",             "b",     NULL,                     offsetof(UserStatusInfo, linger)              },
 595                 { "Slice",              "s",     NULL,                     offsetof(UserStatusInfo, slice)               },
 596                 { "State",              "s",     NULL,                     offsetof(UserStatusInfo, state)               },
 597                 { "UID",                "u",     NULL,                     offsetof(UserStatusInfo, uid)                 },
 598                 { "Timestamp",          "t",     NULL,                     offsetof(UserStatusInfo, timestamp.realtime)  },
 599                 { "TimestampMonotonic", "t",     NULL,                     offsetof(UserStatusInfo, timestamp.monotonic) },
 600                 { "Display",            "(so)",  prop_map_first_of_struct, offsetof(UserStatusInfo, display)             },
 601                 { "Sessions",           "a(so)", prop_map_sessions_strv,   offsetof(UserStatusInfo, sessions)            },
 602                 {}
 603         };
 604
 605         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 606         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
 607         char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], *s1;
 608         char since2[FORMAT_TIMESTAMP_MAX], *s2;
 609         _cleanup_(user_status_info_clear) UserStatusInfo i = {};
 610         int r;
 611
 612         r = bus_map_all_properties(bus, "org.freedesktop.login1", path, map, BUS_MAP_BOOLEAN_AS_BOOL, &error, &m, &i);
 613         if (r < 0)
 614                 return log_error_errno(r, "Could not get properties: %s", bus_error_message(&error, r));
 615
 616         if (*new_line)
 617                 printf("\n");
 618
 619         *new_line = true;
 620
 621         if (i.name)
 622                 printf("%s (%"PRIu32")\n", i.name, i.uid);
 623         else
 624                 printf("%"PRIu32"\n", i.uid);
 625
 626         s1 = format_timestamp_relative(since1, sizeof(since1), i.timestamp.realtime);
 627         s2 = format_timestamp(since2, sizeof(since2), i.timestamp.realtime);
 628
 629         if (s1)
 630                 printf("\t   Since: %s; %s\n", s2, s1);
 631         else if (s2)
 632                 printf("\t   Since: %s\n", s2);
 633
 634         if (!isempty(i.state))
 635                 printf("\t   State: %s\n", i.state);
 636
 637         if (!strv_isempty(i.sessions)) {
 638                 char **l;
 639                 printf("\tSessions:");
 640
 641                 STRV_FOREACH(l, i.sessions)
 642                         printf(" %s%s",
 643                                streq_ptr(*l, i.display) ? "*" : "",
 644                                *l);
 645
 646                 printf("\n");
 647         }
 648
 649         printf("\t  Linger: %s\n", yes_no(i.linger));
 650
 651         if (i.slice) {
 652                 printf("\t    Unit: %s\n", i.slice);
 653                 show_unit_cgroup(bus, "org.freedesktop.systemd1.Slice", i.slice, 0);
 654
 655                 show_journal_by_unit(
 656                                 stdout,
 657                                 i.slice,
 658                                 arg_output,
 659                                 0,
 660                                 i.timestamp.monotonic,
 661                                 arg_lines,
 662                                 0,
 663                                 get_output_flags() | OUTPUT_BEGIN_NEWLINE,
 664                                 SD_JOURNAL_LOCAL_ONLY,
 665                                 true,
 666                                 NULL);
 667         }
 668
 669         return 0;
 670 }
 671
 672 static int print_seat_status_info(sd_bus *bus, const char *path, bool *new_line) {
 673
 674         static const struct bus_properties_map map[]  = {
 675                 { "Id",            "s",     NULL, offsetof(SeatStatusInfo, id) },
 676                 { "ActiveSession", "(so)",  prop_map_first_of_struct, offsetof(SeatStatusInfo, active_session) },
 677                 { "Sessions",      "a(so)", prop_map_sessions_strv, offsetof(SeatStatusInfo, sessions) },
 678                 {}
 679         };
 680
 681         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 682         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL;
 683         _cleanup_(seat_status_info_clear) SeatStatusInfo i = {};
 684         int r;
 685
 686         r = bus_map_all_properties(bus, "org.freedesktop.login1", path, map, 0, &error, &m, &i);
 687         if (r < 0)
 688                 return log_error_errno(r, "Could not get properties: %s", bus_error_message(&error, r));
 689
 690         if (*new_line)
 691                 printf("\n");
 692
 693         *new_line = true;
 694
 695         printf("%s\n", strna(i.id));
 696
 697         if (!strv_isempty(i.sessions)) {
 698                 char **l;
 699                 printf("\tSessions:");
 700
 701                 STRV_FOREACH(l, i.sessions) {
 702                         if (streq_ptr(*l, i.active_session))
 703                                 printf(" *%s", *l);
 704                         else
 705                                 printf(" %s", *l);
 706                 }
 707
 708                 printf("\n");
 709         }
 710
 711         if (arg_transport == BUS_TRANSPORT_LOCAL) {
 712                 unsigned c;
 713
 714                 c = columns();
 715                 if (c > 21)
 716                         c -= 21;
 717                 else
 718                         c = 0;
 719
 720                 printf("\t Devices:\n");
 721
 722                 show_sysfs(i.id, "\t\t  ", c, get_output_flags());
 723         }
 724
 725         return 0;
 726 }
 727
 728 #define property(name, fmt, ...)                                        \
 729         do {                                                            \
 730                 if (value)                                              \
 731                         printf(fmt "\n", __VA_ARGS__);                  \
 732                 else                                                    \
 733                         printf("%s=" fmt "\n", name, __VA_ARGS__);      \
 734         } while (0)
 735
 736 static int print_property(const char *name, sd_bus_message *m, bool value, bool all) {
 737         char type;
 738         const char *contents;
 739         int r;
 740
 741         assert(name);
 742         assert(m);
 743
 744         r = sd_bus_message_peek_type(m, &type, &contents);
 745         if (r < 0)
 746                 return r;
 747
 748         switch (type) {
 749
 750         case SD_BUS_TYPE_STRUCT:
 751
 752                 if (contents[0] == SD_BUS_TYPE_STRING && STR_IN_SET(name, "Display", "Seat", "ActiveSession")) {
 753                         const char *s;
 754
 755                         r = sd_bus_message_read(m, "(so)", &s, NULL);
 756                         if (r < 0)
 757                                 return bus_log_parse_error(r);
 758
 759                         if (all || !isempty(s))
 760                                 property(name, "%s", s);
 761
 762                         return 1;
 763
 764                 } else if (contents[0] == SD_BUS_TYPE_UINT32 && streq(name, "User")) {
 765                         uint32_t uid;
 766
 767                         r = sd_bus_message_read(m, "(uo)", &uid, NULL);
 768                         if (r < 0)
 769                                 return bus_log_parse_error(r);
 770
 771                         if (!uid_is_valid(uid)) {
 772                                 log_error("Invalid user ID: " UID_FMT, uid);
 773                                 return -EINVAL;
 774                         }
 775
 776                         property(name, UID_FMT, uid);
 777                         return 1;
 778                 }
 779                 break;
 780
 781         case SD_BUS_TYPE_ARRAY:
 782
 783                 if (contents[0] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "Sessions")) {
 784                         const char *s;
 785                         bool space = false;
 786
 787                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(so)");
 788                         if (r < 0)
 789                                 return bus_log_parse_error(r);
 790
 791                         if (!value)
 792                                 printf("%s=", name);
 793
 794                         while ((r = sd_bus_message_read(m, "(so)", &s, NULL)) > 0) {
 795                                 printf("%s%s", space ? " " : "", s);
 796                                 space = true;
 797                         }
 798
 799                         if (space || !value)
 800                                 printf("\n");
 801
 802                         if (r < 0)
 803                                 return bus_log_parse_error(r);
 804
 805                         r = sd_bus_message_exit_container(m);
 806                         if (r < 0)
 807                                 return bus_log_parse_error(r);
 808
 809                         return 1;
 810                 }
 811                 break;
 812         }
 813
 814         return 0;
 815 }
 816
 817 static int show_properties(sd_bus *bus, const char *path, bool *new_line) {
 818         int r;
 819
 820         assert(bus);
 821         assert(path);
 822         assert(new_line);
 823
 824         if (*new_line)
 825                 printf("\n");
 826
 827         *new_line = true;
 828
 829         r = bus_print_all_properties(bus, "org.freedesktop.login1", path, print_property, arg_property, arg_value, arg_all, NULL);
 830         if (r < 0)
 831                 return bus_log_parse_error(r);
 832
 833         return 0;
 834 }
 835
 836 static int show_session(int argc, char *argv[], void *userdata) {
 837         bool properties, new_line = false;
 838         sd_bus *bus = userdata;
 839         int r, i;
 840         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 841         _cleanup_free_ char *path = NULL;
 842
 843         assert(bus);
 844         assert(argv);
 845
 846         properties = !strstr(argv[0], "status");
 847
 848         (void) pager_open(arg_no_pager, false);
 849
 850         if (argc <= 1) {
 851                 const char *session, *p = "/org/freedesktop/login1/session/self";
 852
 853                 if (properties)
 854                         /* If no argument is specified inspect the manager itself */
 855                         return show_properties(bus, "/org/freedesktop/login1", &new_line);
 856
 857                 /* And in the pretty case, show data of the calling session */
 858                 session = getenv("XDG_SESSION_ID");
 859                 if (session) {
 860                         r = get_session_path(bus, session, &error, &path);
 861                         if (r < 0) {
 862                                 log_error("Failed to get session path: %s", bus_error_message(&error, r));
 863                                 return r;
 864                         }
 865                         p = path;
 866                 }
 867
 868                 return print_session_status_info(bus, p, &new_line);
 869         }
 870
 871         for (i = 1; i < argc; i++) {
 872                 r = get_session_path(bus, argv[i], &error, &path);
 873                 if (r < 0) {
 874                         log_error("Failed to get session path: %s", bus_error_message(&error, r));
 875                         return r;
 876                 }
 877
 878                 if (properties)
 879                         r = show_properties(bus, path, &new_line);
 880                 else
 881                         r = print_session_status_info(bus, path, &new_line);
 882
 883                 if (r < 0)
 884                         return r;
 885         }
 886
 887         return 0;
 888 }
 889
 890 static int show_user(int argc, char *argv[], void *userdata) {
 891         bool properties, new_line = false;
 892         sd_bus *bus = userdata;
 893         int r, i;
 894
 895         assert(bus);
 896         assert(argv);
 897
 898         properties = !strstr(argv[0], "status");
 899
 900         (void) pager_open(arg_no_pager, false);
 901
 902         if (argc <= 1) {
 903                 /* If not argument is specified inspect the manager
 904                  * itself */
 905                 if (properties)
 906                         return show_properties(bus, "/org/freedesktop/login1", &new_line);
 907
 908                 return print_user_status_info(bus, "/org/freedesktop/login1/user/self", &new_line);
 909         }
 910
 911         for (i = 1; i < argc; i++) {
 912                 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 913                 _cleanup_(sd_bus_message_unrefp) sd_bus_message * reply = NULL;
 914                 const char *path = NULL;
 915                 uid_t uid;
 916
 917                 r = get_user_creds((const char**) (argv+i), &uid, NULL, NULL, NULL);
 918                 if (r < 0)
 919                         return log_error_errno(r, "Failed to look up user %s: %m", argv[i]);
 920
 921                 r = sd_bus_call_method(
 922                                 bus,
 923                                 "org.freedesktop.login1",
 924                                 "/org/freedesktop/login1",
 925                                 "org.freedesktop.login1.Manager",
 926                                 "GetUser",
 927                                 &error, &reply,
 928                                 "u", (uint32_t) uid);
 929                 if (r < 0) {
 930                         log_error("Failed to get user: %s", bus_error_message(&error, r));
 931                         return r;
 932                 }
 933
 934                 r = sd_bus_message_read(reply, "o", &path);
 935                 if (r < 0)
 936                         return bus_log_parse_error(r);
 937
 938                 if (properties)
 939                         r = show_properties(bus, path, &new_line);
 940                 else
 941                         r = print_user_status_info(bus, path, &new_line);
 942
 943                 if (r < 0)
 944                         return r;
 945         }
 946
 947         return 0;
 948 }
 949
 950 static int show_seat(int argc, char *argv[], void *userdata) {
 951         bool properties, new_line = false;
 952         sd_bus *bus = userdata;
 953         int r, i;
 954
 955         assert(bus);
 956         assert(argv);
 957
 958         properties = !strstr(argv[0], "status");
 959
 960         (void) pager_open(arg_no_pager, false);
 961
 962         if (argc <= 1) {
 963                 /* If not argument is specified inspect the manager
 964                  * itself */
 965                 if (properties)
 966                         return show_properties(bus, "/org/freedesktop/login1", &new_line);
 967
 968                 return print_seat_status_info(bus, "/org/freedesktop/login1/seat/self", &new_line);
 969         }
 970
 971         for (i = 1; i < argc; i++) {
 972                 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 973                 _cleanup_(sd_bus_message_unrefp) sd_bus_message * reply = NULL;
 974                 const char *path = NULL;
 975
 976                 r = sd_bus_call_method(
 977                                 bus,
 978                                 "org.freedesktop.login1",
 979                                 "/org/freedesktop/login1",
 980                                 "org.freedesktop.login1.Manager",
 981                                 "GetSeat",
 982                                 &error, &reply,
 983                                 "s", argv[i]);
 984                 if (r < 0) {
 985                         log_error("Failed to get seat: %s", bus_error_message(&error, r));
 986                         return r;
 987                 }
 988
 989                 r = sd_bus_message_read(reply, "o", &path);
 990                 if (r < 0)
 991                         return bus_log_parse_error(r);
 992
 993                 if (properties)
 994                         r = show_properties(bus, path, &new_line);
 995                 else
 996                         r = print_seat_status_info(bus, path, &new_line);
 997
 998                 if (r < 0)
 999                         return r;
1000         }
1001
1002         return 0;
1003 }
1004
1005 static int activate(int argc, char *argv[], void *userdata) {
1006         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1007         sd_bus *bus = userdata;
1008         char *short_argv[3];
1009         int r, i;
1010
1011         assert(bus);
1012         assert(argv);
1013
1014         polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
1015
1016         if (argc < 2) {
1017                 /* No argument? Let's either use $XDG_SESSION_ID (if specified), or an empty
1018                  * session name, in which case logind will try to guess our session. */
1019
1020                 short_argv[0] = argv[0];
1021                 short_argv[1] = getenv("XDG_SESSION_ID") ?: (char*) "";
1022                 short_argv[2] = NULL;
1023
1024                 argv = short_argv;
1025                 argc = 2;
1026         }
1027
1028         for (i = 1; i < argc; i++) {
1029
1030                 r = sd_bus_call_method(
1031                                 bus,
1032                                 "org.freedesktop.login1",
1033                                 "/org/freedesktop/login1",
1034                                 "org.freedesktop.login1.Manager",
1035                                 streq(argv[0], "lock-session")      ? "LockSession" :
1036                                 streq(argv[0], "unlock-session")    ? "UnlockSession" :
1037                                 streq(argv[0], "terminate-session") ? "TerminateSession" :
1038                                                                       "ActivateSession",
1039                                 &error, NULL,
1040                                 "s", argv[i]);
1041                 if (r < 0) {
1042                         log_error("Failed to issue method call: %s", bus_error_message(&error, -r));
1043                         return r;
1044                 }
1045         }
1046
1047         return 0;
1048 }
1049
1050 static int kill_session(int argc, char *argv[], void *userdata) {
1051         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1052         sd_bus *bus = userdata;
1053         int r, i;
1054
1055         assert(bus);
1056         assert(argv);
1057
1058         polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
1059
1060         if (!arg_kill_who)
1061                 arg_kill_who = "all";
1062
1063         for (i = 1; i < argc; i++) {
1064
1065                 r = sd_bus_call_method(
1066                         bus,
1067                         "org.freedesktop.login1",
1068                         "/org/freedesktop/login1",
1069                         "org.freedesktop.login1.Manager",
1070                         "KillSession",
1071                         &error, NULL,
1072                         "ssi", argv[i], arg_kill_who, arg_signal);
1073                 if (r < 0) {
1074                         log_error("Could not kill session: %s", bus_error_message(&error, -r));
1075                         return r;
1076                 }
1077         }
1078
1079         return 0;
1080 }
1081
1082 static int enable_linger(int argc, char *argv[], void *userdata) {
1083         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1084         sd_bus *bus = userdata;
1085         char* short_argv[3];
1086         bool b;
1087         int r, i;
1088
1089         assert(bus);
1090         assert(argv);
1091
1092         polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
1093
1094         b = streq(argv[0], "enable-linger");
1095
1096         if (argc < 2) {
1097                 /* No argument? Let's use an empty user name,
1098                  * then logind will use our user. */
1099
1100                 short_argv[0] = argv[0];
1101                 short_argv[1] = (char*) "";
1102                 short_argv[2] = NULL;
1103                 argv = short_argv;
1104                 argc = 2;
1105         }
1106
1107         for (i = 1; i < argc; i++) {
1108                 uid_t uid;
1109
1110                 if (isempty(argv[i]))
1111                         uid = UID_INVALID;
1112                 else {
1113                         r = get_user_creds((const char**) (argv+i), &uid, NULL, NULL, NULL);
1114                         if (r < 0)
1115                                 return log_error_errno(r, "Failed to look up user %s: %m", argv[i]);
1116                 }
1117
1118                 r = sd_bus_call_method(
1119                         bus,
1120                         "org.freedesktop.login1",
1121                         "/org/freedesktop/login1",
1122                         "org.freedesktop.login1.Manager",
1123                         "SetUserLinger",
1124                         &error, NULL,
1125                         "ubb", (uint32_t) uid, b, true);
1126                 if (r < 0) {
1127                         log_error("Could not enable linger: %s", bus_error_message(&error, -r));
1128                         return r;
1129                 }
1130         }
1131
1132         return 0;
1133 }
1134
1135 static int terminate_user(int argc, char *argv[], void *userdata) {
1136         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1137         sd_bus *bus = userdata;
1138         int r, i;
1139
1140         assert(bus);
1141         assert(argv);
1142
1143         polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
1144
1145         for (i = 1; i < argc; i++) {
1146                 uid_t uid;
1147
1148                 r = get_user_creds((const char**) (argv+i), &uid, NULL, NULL, NULL);
1149                 if (r < 0)
1150                         return log_error_errno(r, "Failed to look up user %s: %m", argv[i]);
1151
1152                 r = sd_bus_call_method(
1153                         bus,
1154                         "org.freedesktop.login1",
1155                         "/org/freedesktop/login1",
1156                         "org.freedesktop.login1.Manager",
1157                         "TerminateUser",
1158                         &error, NULL,
1159                         "u", (uint32_t) uid);
1160                 if (r < 0) {
1161                         log_error("Could not terminate user: %s", bus_error_message(&error, -r));
1162                         return r;
1163                 }
1164         }
1165
1166         return 0;
1167 }
1168
1169 static int kill_user(int argc, char *argv[], void *userdata) {
1170         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1171         sd_bus *bus = userdata;
1172         int r, i;
1173
1174         assert(bus);
1175         assert(argv);
1176
1177         polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
1178
1179         if (!arg_kill_who)
1180                 arg_kill_who = "all";
1181
1182         for (i = 1; i < argc; i++) {
1183                 uid_t uid;
1184
1185                 r = get_user_creds((const char**) (argv+i), &uid, NULL, NULL, NULL);
1186                 if (r < 0)
1187                         return log_error_errno(r, "Failed to look up user %s: %m", argv[i]);
1188
1189                 r = sd_bus_call_method(
1190                         bus,
1191                         "org.freedesktop.login1",
1192                         "/org/freedesktop/login1",
1193                         "org.freedesktop.login1.Manager",
1194                         "KillUser",
1195                         &error, NULL,
1196                         "ui", (uint32_t) uid, arg_signal);
1197                 if (r < 0) {
1198                         log_error("Could not kill user: %s", bus_error_message(&error, -r));
1199                         return r;
1200                 }
1201         }
1202
1203         return 0;
1204 }
1205
1206 static int attach(int argc, char *argv[], void *userdata) {
1207         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1208         sd_bus *bus = userdata;
1209         int r, i;
1210
1211         assert(bus);
1212         assert(argv);
1213
1214         polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
1215
1216         for (i = 2; i < argc; i++) {
1217
1218                 r = sd_bus_call_method(
1219                         bus,
1220                         "org.freedesktop.login1",
1221                         "/org/freedesktop/login1",
1222                         "org.freedesktop.login1.Manager",
1223                         "AttachDevice",
1224                         &error, NULL,
1225                         "ssb", argv[1], argv[i], true);
1226
1227                 if (r < 0) {
1228                         log_error("Could not attach device: %s", bus_error_message(&error, -r));
1229                         return r;
1230                 }
1231         }
1232
1233         return 0;
1234 }
1235
1236 static int flush_devices(int argc, char *argv[], void *userdata) {
1237         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1238         sd_bus *bus = userdata;
1239         int r;
1240
1241         assert(bus);
1242         assert(argv);
1243
1244         polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
1245
1246         r = sd_bus_call_method(
1247                         bus,
1248                         "org.freedesktop.login1",
1249                         "/org/freedesktop/login1",
1250                         "org.freedesktop.login1.Manager",
1251                         "FlushDevices",
1252                         &error, NULL,
1253                         "b", true);
1254         if (r < 0)
1255                 log_error("Could not flush devices: %s", bus_error_message(&error, -r));
1256
1257         return r;
1258 }
1259
1260 static int lock_sessions(int argc, char *argv[], void *userdata) {
1261         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1262         sd_bus *bus = userdata;
1263         int r;
1264
1265         assert(bus);
1266         assert(argv);
1267
1268         polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
1269
1270         r = sd_bus_call_method(
1271                         bus,
1272                         "org.freedesktop.login1",
1273                         "/org/freedesktop/login1",
1274                         "org.freedesktop.login1.Manager",
1275                         streq(argv[0], "lock-sessions") ? "LockSessions" : "UnlockSessions",
1276                         &error, NULL,
1277                         NULL);
1278         if (r < 0)
1279                 log_error("Could not lock sessions: %s", bus_error_message(&error, -r));
1280
1281         return r;
1282 }
1283
1284 static int terminate_seat(int argc, char *argv[], void *userdata) {
1285         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1286         sd_bus *bus = userdata;
1287         int r, i;
1288
1289         assert(bus);
1290         assert(argv);
1291
1292         polkit_agent_open_if_enabled(arg_transport, arg_ask_password);
1293
1294         for (i = 1; i < argc; i++) {
1295
1296                 r = sd_bus_call_method(
1297                         bus,
1298                         "org.freedesktop.login1",
1299                         "/org/freedesktop/login1",
1300                         "org.freedesktop.login1.Manager",
1301                         "TerminateSeat",
1302                         &error, NULL,
1303                         "s", argv[i]);
1304                 if (r < 0) {
1305                         log_error("Could not terminate seat: %s", bus_error_message(&error, -r));
1306                         return r;
1307                 }
1308         }
1309
1310         return 0;
1311 }
1312
1313 static int help(int argc, char *argv[], void *userdata) {
1314
1315         printf("%s [OPTIONS...] {COMMAND} ...\n\n"
1316                "Send control commands to or query the login manager.\n\n"
1317                "  -h --help                Show this help\n"
1318                "     --version             Show package version\n"
1319                "     --no-pager            Do not pipe output into a pager\n"
1320                "     --no-legend           Do not show the headers and footers\n"
1321                "     --no-ask-password     Don't prompt for password\n"
1322                "  -H --host=[USER@]HOST    Operate on remote host\n"
1323                "  -M --machine=CONTAINER   Operate on local container\n"
1324                "  -p --property=NAME       Show only properties by this name\n"
1325                "  -a --all                 Show all properties, including empty ones\n"
1326                "     --value               When showing properties, only print the value\n"
1327                "  -l --full                Do not ellipsize output\n"
1328                "     --kill-who=WHO        Who to send signal to\n"
1329                "  -s --signal=SIGNAL       Which signal to send\n"
1330                "  -n --lines=INTEGER       Number of journal entries to show\n"
1331                "  -o --output=STRING       Change journal output mode (short, short-precise,\n"
1332                "                             short-iso, short-iso-precise, short-full,\n"
1333                "                             short-monotonic, short-unix, verbose, export,\n"
1334                "                             json, json-pretty, json-sse, cat)\n"
1335                "Session Commands:\n"
1336                "  list-sessions            List sessions\n"
1337                "  session-status [ID...]   Show session status\n"
1338                "  show-session [ID...]     Show properties of sessions or the manager\n"
1339                "  activate [ID]            Activate a session\n"
1340                "  lock-session [ID...]     Screen lock one or more sessions\n"
1341                "  unlock-session [ID...]   Screen unlock one or more sessions\n"
1342                "  lock-sessions            Screen lock all current sessions\n"
1343                "  unlock-sessions          Screen unlock all current sessions\n"
1344                "  terminate-session ID...  Terminate one or more sessions\n"
1345                "  kill-session ID...       Send signal to processes of a session\n\n"
1346                "User Commands:\n"
1347                "  list-users               List users\n"
1348                "  user-status [USER...]    Show user status\n"
1349                "  show-user [USER...]      Show properties of users or the manager\n"
1350                "  enable-linger [USER...]  Enable linger state of one or more users\n"
1351                "  disable-linger [USER...] Disable linger state of one or more users\n"
1352                "  terminate-user USER...   Terminate all sessions of one or more users\n"
1353                "  kill-user USER...        Send signal to processes of a user\n\n"
1354                "Seat Commands:\n"
1355                "  list-seats               List seats\n"
1356                "  seat-status [NAME...]    Show seat status\n"
1357                "  show-seat [NAME...]      Show properties of seats or the manager\n"
1358                "  attach NAME DEVICE...    Attach one or more devices to a seat\n"
1359                "  flush-devices            Flush all device associations\n"
1360                "  terminate-seat NAME...   Terminate all sessions on one or more seats\n"
1361                , program_invocation_short_name);
1362
1363         return 0;
1364 }
1365
1366 static int parse_argv(int argc, char *argv[]) {
1367
1368         enum {
1369                 ARG_VERSION = 0x100,
1370                 ARG_VALUE,
1371                 ARG_NO_PAGER,
1372                 ARG_NO_LEGEND,
1373                 ARG_KILL_WHO,
1374                 ARG_NO_ASK_PASSWORD,
1375         };
1376
1377         static const struct option options[] = {
1378                 { "help",            no_argument,       NULL, 'h'                 },
1379                 { "version",         no_argument,       NULL, ARG_VERSION         },
1380                 { "property",        required_argument, NULL, 'p'                 },
1381                 { "all",             no_argument,       NULL, 'a'                 },
1382                 { "value",           no_argument,       NULL, ARG_VALUE           },
1383                 { "full",            no_argument,       NULL, 'l'                 },
1384                 { "no-pager",        no_argument,       NULL, ARG_NO_PAGER        },
1385                 { "no-legend",       no_argument,       NULL, ARG_NO_LEGEND       },
1386                 { "kill-who",        required_argument, NULL, ARG_KILL_WHO        },
1387                 { "signal",          required_argument, NULL, 's'                 },
1388                 { "host",            required_argument, NULL, 'H'                 },
1389                 { "machine",         required_argument, NULL, 'M'                 },
1390                 { "no-ask-password", no_argument,       NULL, ARG_NO_ASK_PASSWORD },
1391                 { "lines",           required_argument, NULL, 'n'                 },
1392                 { "output",          required_argument, NULL, 'o'                 },
1393                 {}
1394         };
1395
1396         int c, r;
1397
1398         assert(argc >= 0);
1399         assert(argv);
1400
1401         while ((c = getopt_long(argc, argv, "hp:als:H:M:n:o:", options, NULL)) >= 0)
1402
1403                 switch (c) {
1404
1405                 case 'h':
1406                         help(0, NULL, NULL);
1407                         return 0;
1408
1409                 case ARG_VERSION:
1410                         return version();
1411
1412                 case 'p': {
1413                         r = strv_extend(&arg_property, optarg);
1414                         if (r < 0)
1415                                 return log_oom();
1416
1417                         /* If the user asked for a particular
1418                          * property, show it to him, even if it is
1419                          * empty. */
1420                         arg_all = true;
1421                         break;
1422                 }
1423
1424                 case 'a':
1425                         arg_all = true;
1426                         break;
1427
1428                 case ARG_VALUE:
1429                         arg_value = true;
1430                         break;
1431
1432                 case 'l':
1433                         arg_full = true;
1434                         break;
1435
1436                 case 'n':
1437                         if (safe_atou(optarg, &arg_lines) < 0) {
1438                                 log_error("Failed to parse lines '%s'", optarg);
1439                                 return -EINVAL;
1440                         }
1441                         break;
1442
1443                 case 'o':
1444                         arg_output = output_mode_from_string(optarg);
1445                         if (arg_output < 0) {
1446                                 log_error("Unknown output '%s'.", optarg);
1447                                 return -EINVAL;
1448                         }
1449                         break;
1450
1451                 case ARG_NO_PAGER:
1452                         arg_no_pager = true;
1453                         break;
1454
1455                 case ARG_NO_LEGEND:
1456                         arg_legend = false;
1457                         break;
1458
1459                 case ARG_NO_ASK_PASSWORD:
1460                         arg_ask_password = false;
1461                         break;
1462
1463                 case ARG_KILL_WHO:
1464                         arg_kill_who = optarg;
1465                         break;
1466
1467                 case 's':
1468                         arg_signal = signal_from_string(optarg);
1469                         if (arg_signal < 0) {
1470                                 log_error("Failed to parse signal string %s.", optarg);
1471                                 return -EINVAL;
1472                         }
1473                         break;
1474
1475                 case 'H':
1476                         arg_transport = BUS_TRANSPORT_REMOTE;
1477                         arg_host = optarg;
1478                         break;
1479
1480                 case 'M':
1481                         arg_transport = BUS_TRANSPORT_MACHINE;
1482                         arg_host = optarg;
1483                         break;
1484
1485                 case '?':
1486                         return -EINVAL;
1487
1488                 default:
1489                         assert_not_reached("Unhandled option");
1490                 }
1491
1492         return 1;
1493 }
1494
1495 static int loginctl_main(int argc, char *argv[], sd_bus *bus) {
1496
1497         static const Verb verbs[] = {
1498                 { "help",              VERB_ANY, VERB_ANY, 0,            help              },
1499                 { "list-sessions",     VERB_ANY, 1,        VERB_DEFAULT, list_sessions     },
1500                 { "session-status",    VERB_ANY, VERB_ANY, 0,            show_session      },
1501                 { "show-session",      VERB_ANY, VERB_ANY, 0,            show_session      },
1502                 { "activate",          VERB_ANY, 2,        0,            activate          },
1503                 { "lock-session",      VERB_ANY, VERB_ANY, 0,            activate          },
1504                 { "unlock-session",    VERB_ANY, VERB_ANY, 0,            activate          },
1505                 { "lock-sessions",     VERB_ANY, 1,        0,            lock_sessions     },
1506                 { "unlock-sessions",   VERB_ANY, 1,        0,            lock_sessions     },
1507                 { "terminate-session", 2,        VERB_ANY, 0,            activate          },
1508                 { "kill-session",      2,        VERB_ANY, 0,            kill_session      },
1509                 { "list-users",        VERB_ANY, 1,        0,            list_users        },
1510                 { "user-status",       VERB_ANY, VERB_ANY, 0,            show_user         },
1511                 { "show-user",         VERB_ANY, VERB_ANY, 0,            show_user         },
1512                 { "enable-linger",     VERB_ANY, VERB_ANY, 0,            enable_linger     },
1513                 { "disable-linger",    VERB_ANY, VERB_ANY, 0,            enable_linger     },
1514                 { "terminate-user",    2,        VERB_ANY, 0,            terminate_user    },
1515                 { "kill-user",         2,        VERB_ANY, 0,            kill_user         },
1516                 { "list-seats",        VERB_ANY, 1,        0,            list_seats        },
1517                 { "seat-status",       VERB_ANY, VERB_ANY, 0,            show_seat         },
1518                 { "show-seat",         VERB_ANY, VERB_ANY, 0,            show_seat         },
1519                 { "attach",            3,        VERB_ANY, 0,            attach            },
1520                 { "flush-devices",     VERB_ANY, 1,        0,            flush_devices     },
1521                 { "terminate-seat",    2,        VERB_ANY, 0,            terminate_seat    },
1522                 {}
1523         };
1524
1525         return dispatch_verb(argc, argv, verbs, bus);
1526 }
1527
1528 int main(int argc, char *argv[]) {
1529         sd_bus *bus = NULL;
1530         int r;
1531
1532         setlocale(LC_ALL, "");
1533         log_parse_environment();
1534         log_open();
1535         sigbus_install();
1536
1537         r = parse_argv(argc, argv);
1538         if (r <= 0)
1539                 goto finish;
1540
1541         r = bus_connect_transport(arg_transport, arg_host, false, &bus);
1542         if (r < 0) {
1543                 log_error_errno(r, "Failed to create bus connection: %m");
1544                 goto finish;
1545         }
1546
1547         sd_bus_set_allow_interactive_authorization(bus, arg_ask_password);
1548
1549         r = loginctl_main(argc, argv, bus);
1550
1551 finish:
1552         /* make sure we terminate the bus connection first, and then close the
1553          * pager, see issue #3543 for the details. */
1554         sd_bus_flush_close_unref(bus);
1555         pager_close();
1556         polkit_agent_close();
1557
1558         strv_free(arg_property);
1559
1560         return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
1561 }