src/login/loginctl.c

   1 /***
   2   This file is part of systemd.
   3
   4   Copyright 2010 Lennart Poettering
   5
   6   systemd is free software; you can redistribute it and/or modify it
   7   under the terms of the GNU Lesser General Public License as published by
   8   the Free Software Foundation; either version 2.1 of the License, or
   9   (at your option) any later version.
  10
  11   systemd is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14   Lesser General Public License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public License
  17   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  18 ***/
  19
  20 #include <errno.h>
  21 #include <getopt.h>
  22 #include <locale.h>
  23 #include <string.h>
  24 #include <unistd.h>
  25
  26 #include "sd-bus.h"
  27
  28 #include "alloc-util.h"
  29 #include "bus-error.h"
  30 #include "bus-util.h"
  31 //#include "cgroup-show.h"
  32 #include "cgroup-util.h"
  33 #include "log.h"
  34 //#include "logs-show.h"
  35 #include "macro.h"
  36 #include "pager.h"
  37 #include "parse-util.h"
  38 #include "process-util.h"
  39 #include "signal-util.h"
  40 //#include "spawn-polkit-agent.h"
  41 #include "strv.h"
  42 #include "sysfs-show.h"
  43 #include "terminal-util.h"
  44 #include "unit-name.h"
  45 #include "user-util.h"
  46 #include "util.h"
  47 #include "verbs.h"
  48
  49 /// Additional includes needed by elogind
  50 #include "eloginctl.h"
  51
  52 static char **arg_property = NULL;
  53 static bool arg_all = false;
  54 static bool arg_value = false;
  55 static bool arg_full = false;
  56 static bool arg_no_pager = false;
  57 static bool arg_legend = true;
  58 static const char *arg_kill_who = NULL;
  59 static int arg_signal = SIGTERM;
  60 #if 0 /// UNNEEDED by elogind
  61 static BusTransport arg_transport = BUS_TRANSPORT_LOCAL;
  62 static char *arg_host = NULL;
  63 static bool arg_ask_password = true;
  64 static unsigned arg_lines = 10;
  65 static OutputMode arg_output = OUTPUT_SHORT;
  66 #else
  67 /// Instead we need this:
  68 extern BusTransport arg_transport;
  69 static char *arg_host = NULL;
  70 extern bool arg_ask_password;
  71 extern bool arg_no_wall;
  72 extern usec_t arg_when;
  73 extern bool arg_ignore_inhibitors;
  74 extern elogind_action arg_action;
  75 #endif // 0
  76
  77 #if 0 /// UNNEEDED by elogind
  78 static void polkit_agent_open_if_enabled(void) {
  79
  80         /* Open the polkit agent as a child process if necessary */
  81
  82         if (!arg_ask_password)
  83                 return;
  84
  85         if (arg_transport != BUS_TRANSPORT_LOCAL)
  86                 return;
  87
  88         polkit_agent_open();
  89 }
  90
  91 static OutputFlags get_output_flags(void) {
  92
  93         return
  94                 arg_all * OUTPUT_SHOW_ALL |
  95                 arg_full * OUTPUT_FULL_WIDTH |
  96                 (!on_tty() || pager_have()) * OUTPUT_FULL_WIDTH |
  97                 colors_enabled() * OUTPUT_COLOR;
  98 }
  99 #endif // 0
 100
 101 static int get_session_path(sd_bus *bus, const char *session_id, sd_bus_error *error, char **path) {
 102         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 103         int r;
 104         char *ans;
 105
 106         r = sd_bus_call_method(
 107                         bus,
 108                         "org.freedesktop.login1",
 109                         "/org/freedesktop/login1",
 110                         "org.freedesktop.login1.Manager",
 111                         "GetSession",
 112                         error, &reply,
 113                         "s", session_id);
 114         if (r < 0)
 115                 return r;
 116
 117         r = sd_bus_message_read(reply, "o", &ans);
 118         if (r < 0)
 119                 return r;
 120
 121         ans = strdup(ans);
 122         if (!ans)
 123                 return -ENOMEM;
 124
 125         *path = ans;
 126         return 0;
 127 }
 128
 129 static int list_sessions(int argc, char *argv[], void *userdata) {
 130         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 131         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 132         const char *id, *user, *seat, *object;
 133         sd_bus *bus = userdata;
 134         unsigned k = 0;
 135         uint32_t uid;
 136         int r;
 137
 138         assert(bus);
 139         assert(argv);
 140
 141         pager_open(arg_no_pager, false);
 142
 143         r = sd_bus_call_method(
 144                         bus,
 145                         "org.freedesktop.login1",
 146                         "/org/freedesktop/login1",
 147                         "org.freedesktop.login1.Manager",
 148                         "ListSessions",
 149                         &error, &reply,
 150                         "");
 151         if (r < 0) {
 152                 log_error("Failed to list sessions: %s", bus_error_message(&error, r));
 153                 return r;
 154         }
 155
 156         r = sd_bus_message_enter_container(reply, 'a', "(susso)");
 157         if (r < 0)
 158                 return bus_log_parse_error(r);
 159
 160         if (arg_legend)
 161                 printf("%10s %10s %-16s %-16s %-16s\n", "SESSION", "UID", "USER", "SEAT", "TTY");
 162
 163         while ((r = sd_bus_message_read(reply, "(susso)", &id, &uid, &user, &seat, &object)) > 0) {
 164                 _cleanup_(sd_bus_error_free) sd_bus_error error2 = SD_BUS_ERROR_NULL;
 165                 _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply2 = NULL;
 166                 _cleanup_free_ char *path = NULL;
 167                 const char *tty = NULL;
 168
 169                 r = get_session_path(bus, id, &error2, &path);
 170                 if (r < 0)
 171                         log_warning("Failed to get session path: %s", bus_error_message(&error, r));
 172                 else {
 173                         r = sd_bus_get_property(
 174                                         bus,
 175                                         "org.freedesktop.login1",
 176                                         path,
 177                                         "org.freedesktop.login1.Session",
 178                                         "TTY",
 179                                         &error2,
 180                                         &reply2,
 181                                         "s");
 182                         if (r < 0)
 183                                 log_warning("Failed to get TTY for session %s: %s",
 184                                             id, bus_error_message(&error2, r));
 185                         else {
 186                                 r = sd_bus_message_read(reply2, "s", &tty);
 187                                 if (r < 0)
 188                                         return bus_log_parse_error(r);
 189                         }
 190                 }
 191
 192                 printf("%10s %10"PRIu32" %-16s %-16s %-16s\n", id, uid, user, seat, strna(tty));
 193                 k++;
 194         }
 195         if (r < 0)
 196                 return bus_log_parse_error(r);
 197
 198         if (arg_legend)
 199                 printf("\n%u sessions listed.\n", k);
 200
 201         return 0;
 202 }
 203
 204 static int list_users(int argc, char *argv[], void *userdata) {
 205         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 206         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 207         const char *user, *object;
 208         sd_bus *bus = userdata;
 209         unsigned k = 0;
 210         uint32_t uid;
 211         int r;
 212
 213         assert(bus);
 214         assert(argv);
 215
 216         pager_open(arg_no_pager, false);
 217
 218         r = sd_bus_call_method(
 219                         bus,
 220                         "org.freedesktop.login1",
 221                         "/org/freedesktop/login1",
 222                         "org.freedesktop.login1.Manager",
 223                         "ListUsers",
 224                         &error, &reply,
 225                         "");
 226         if (r < 0) {
 227                 log_error("Failed to list users: %s", bus_error_message(&error, r));
 228                 return r;
 229         }
 230
 231         r = sd_bus_message_enter_container(reply, 'a', "(uso)");
 232         if (r < 0)
 233                 return bus_log_parse_error(r);
 234
 235         if (arg_legend)
 236                 printf("%10s %-16s\n", "UID", "USER");
 237
 238         while ((r = sd_bus_message_read(reply, "(uso)", &uid, &user, &object)) > 0) {
 239                 printf("%10"PRIu32" %-16s\n", uid, user);
 240                 k++;
 241         }
 242         if (r < 0)
 243                 return bus_log_parse_error(r);
 244
 245         if (arg_legend)
 246                 printf("\n%u users listed.\n", k);
 247
 248         return 0;
 249 }
 250
 251 static int list_seats(int argc, char *argv[], void *userdata) {
 252         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 253         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 254         const char *seat, *object;
 255         sd_bus *bus = userdata;
 256         unsigned k = 0;
 257         int r;
 258         assert(bus);
 259         assert(argv);
 260
 261         pager_open(arg_no_pager, false);
 262
 263         r = sd_bus_call_method(
 264                         bus,
 265                         "org.freedesktop.login1",
 266                         "/org/freedesktop/login1",
 267                         "org.freedesktop.login1.Manager",
 268                         "ListSeats",
 269                         &error, &reply,
 270                         "");
 271         if (r < 0) {
 272                 log_error("Failed to list seats: %s", bus_error_message(&error, r));
 273                 return r;
 274         }
 275
 276         r = sd_bus_message_enter_container(reply, 'a', "(so)");
 277         if (r < 0)
 278                 return bus_log_parse_error(r);
 279
 280         if (arg_legend)
 281                 printf("%-16s\n", "SEAT");
 282
 283         while ((r = sd_bus_message_read(reply, "(so)", &seat, &object)) > 0) {
 284                 printf("%-16s\n", seat);
 285                 k++;
 286         }
 287         if (r < 0)
 288                 return bus_log_parse_error(r);
 289
 290         if (arg_legend)
 291                 printf("\n%u seats listed.\n", k);
 292
 293         return 0;
 294 }
 295
 296 #if 0 /// UNNEEDED by elogind
 297 static int show_unit_cgroup(sd_bus *bus, const char *interface, const char *unit, pid_t leader) {
 298         _cleanup_free_ char *cgroup = NULL;
 299         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 300         unsigned c;
 301         int r;
 302
 303         assert(bus);
 304         assert(unit);
 305
 306         r = show_cgroup_get_unit_path_and_warn(bus, unit, &cgroup);
 307         if (r < 0)
 308                 return r;
 309
 310         if (isempty(cgroup))
 311                 return 0;
 312
 313         c = columns();
 314         if (c > 18)
 315                 c -= 18;
 316         else
 317                 c = 0;
 318
 319         r = unit_show_processes(bus, unit, cgroup, "\t\t  ", c, get_output_flags(), &error);
 320         if (r == -EBADR) {
 321
 322                 if (arg_transport == BUS_TRANSPORT_REMOTE)
 323                         return 0;
 324
 325                 /* Fallback for older systemd versions where the GetUnitProcesses() call is not yet available */
 326
 327                 if (cg_is_empty_recursive(SYSTEMD_CGROUP_CONTROLLER, cgroup) != 0 && leader <= 0)
 328                         return 0;
 329
 330                 show_cgroup_and_extra(SYSTEMD_CGROUP_CONTROLLER, cgroup, "\t\t  ", c, &leader, leader > 0, get_output_flags());
 331         } else if (r < 0)
 332                 return log_error_errno(r, "Failed to dump process list: %s", bus_error_message(&error, r));
 333
 334         return 0;
 335 }
 336 #endif // 0
 337
 338 typedef struct SessionStatusInfo {
 339         char *id;
 340         uid_t uid;
 341         char *name;
 342         struct dual_timestamp timestamp;
 343         unsigned int vtnr;
 344         char *seat;
 345         char *tty;
 346         char *display;
 347         int remote;
 348         char *remote_host;
 349         char *remote_user;
 350         char *service;
 351         pid_t leader;
 352         char *type;
 353         char *class;
 354         char *state;
 355         char *scope;
 356         char *desktop;
 357 } SessionStatusInfo;
 358
 359 typedef struct UserStatusInfo {
 360         uid_t uid;
 361         int linger;
 362         char *name;
 363         struct dual_timestamp timestamp;
 364         char *state;
 365         char **sessions;
 366         char *display;
 367         char *slice;
 368 } UserStatusInfo;
 369
 370 typedef struct SeatStatusInfo {
 371         char *id;
 372         char *active_session;
 373         char **sessions;
 374 } SeatStatusInfo;
 375
 376 static void session_status_info_clear(SessionStatusInfo *info) {
 377         if (info) {
 378                 free(info->id);
 379                 free(info->name);
 380                 free(info->seat);
 381                 free(info->tty);
 382                 free(info->display);
 383                 free(info->remote_host);
 384                 free(info->remote_user);
 385                 free(info->service);
 386                 free(info->type);
 387                 free(info->class);
 388                 free(info->state);
 389                 free(info->scope);
 390                 free(info->desktop);
 391                 zero(*info);
 392         }
 393 }
 394
 395 static void user_status_info_clear(UserStatusInfo *info) {
 396         if (info) {
 397                 free(info->name);
 398                 free(info->state);
 399                 strv_free(info->sessions);
 400                 free(info->display);
 401                 free(info->slice);
 402                 zero(*info);
 403         }
 404 }
 405
 406 static void seat_status_info_clear(SeatStatusInfo *info) {
 407         if (info) {
 408                 free(info->id);
 409                 free(info->active_session);
 410                 strv_free(info->sessions);
 411                 zero(*info);
 412         }
 413 }
 414
 415 static int prop_map_first_of_struct(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
 416         const char *contents;
 417         int r;
 418
 419         r = sd_bus_message_peek_type(m, NULL, &contents);
 420         if (r < 0)
 421                 return r;
 422
 423         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_STRUCT, contents);
 424         if (r < 0)
 425                 return r;
 426
 427         if (contents[0] == 's' || contents[0] == 'o') {
 428                 const char *s;
 429                 char **p = (char **) userdata;
 430
 431                 r = sd_bus_message_read_basic(m, contents[0], &s);
 432                 if (r < 0)
 433                         return r;
 434
 435                 r = free_and_strdup(p, s);
 436                 if (r < 0)
 437                         return r;
 438         } else {
 439                 r = sd_bus_message_read_basic(m, contents[0], userdata);
 440                 if (r < 0)
 441                         return r;
 442         }
 443
 444         r = sd_bus_message_skip(m, contents+1);
 445         if (r < 0)
 446                 return r;
 447
 448         r = sd_bus_message_exit_container(m);
 449         if (r < 0)
 450                 return r;
 451
 452         return 0;
 453 }
 454
 455 static int prop_map_sessions_strv(sd_bus *bus, const char *member, sd_bus_message *m, sd_bus_error *error, void *userdata) {
 456         const char *name;
 457         int r;
 458
 459         assert(bus);
 460         assert(m);
 461
 462         r = sd_bus_message_enter_container(m, 'a', "(so)");
 463         if (r < 0)
 464                 return r;
 465
 466         while ((r = sd_bus_message_read(m, "(so)", &name, NULL)) > 0) {
 467                 r = strv_extend(userdata, name);
 468                 if (r < 0)
 469                         return r;
 470         }
 471         if (r < 0)
 472                 return r;
 473
 474         return sd_bus_message_exit_container(m);
 475 }
 476
 477 static int print_session_status_info(sd_bus *bus, const char *path, bool *new_line) {
 478
 479         static const struct bus_properties_map map[]  = {
 480                 { "Id",                  "s",    NULL,                     offsetof(SessionStatusInfo, id)                  },
 481                 { "Name",                "s",    NULL,                     offsetof(SessionStatusInfo, name)                },
 482                 { "TTY",                 "s",    NULL,                     offsetof(SessionStatusInfo, tty)                 },
 483                 { "Display",             "s",    NULL,                     offsetof(SessionStatusInfo, display)             },
 484                 { "RemoteHost",          "s",    NULL,                     offsetof(SessionStatusInfo, remote_host)         },
 485                 { "RemoteUser",          "s",    NULL,                     offsetof(SessionStatusInfo, remote_user)         },
 486                 { "Service",             "s",    NULL,                     offsetof(SessionStatusInfo, service)             },
 487                 { "Desktop",             "s",    NULL,                     offsetof(SessionStatusInfo, desktop)             },
 488                 { "Type",                "s",    NULL,                     offsetof(SessionStatusInfo, type)                },
 489                 { "Class",               "s",    NULL,                     offsetof(SessionStatusInfo, class)               },
 490                 { "Scope",               "s",    NULL,                     offsetof(SessionStatusInfo, scope)               },
 491                 { "State",               "s",    NULL,                     offsetof(SessionStatusInfo, state)               },
 492                 { "VTNr",                "u",    NULL,                     offsetof(SessionStatusInfo, vtnr)                },
 493                 { "Leader",              "u",    NULL,                     offsetof(SessionStatusInfo, leader)              },
 494                 { "Remote",              "b",    NULL,                     offsetof(SessionStatusInfo, remote)              },
 495                 { "Timestamp",           "t",    NULL,                     offsetof(SessionStatusInfo, timestamp.realtime)  },
 496                 { "TimestampMonotonic",  "t",    NULL,                     offsetof(SessionStatusInfo, timestamp.monotonic) },
 497                 { "User",                "(uo)", prop_map_first_of_struct, offsetof(SessionStatusInfo, uid)                 },
 498                 { "Seat",                "(so)", prop_map_first_of_struct, offsetof(SessionStatusInfo, seat)                },
 499                 {}
 500         };
 501
 502         char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], *s1;
 503         char since2[FORMAT_TIMESTAMP_MAX], *s2;
 504         _cleanup_(session_status_info_clear) SessionStatusInfo i = {};
 505         int r;
 506
 507         r = bus_map_all_properties(bus, "org.freedesktop.login1", path, map, &i);
 508         if (r < 0)
 509                 return log_error_errno(r, "Could not get properties: %m");
 510
 511         if (*new_line)
 512                 printf("\n");
 513
 514         *new_line = true;
 515
 516         printf("%s - ", strna(i.id));
 517
 518         if (i.name)
 519                 printf("%s (%"PRIu32")\n", i.name, i.uid);
 520         else
 521                 printf("%"PRIu32"\n", i.uid);
 522
 523         s1 = format_timestamp_relative(since1, sizeof(since1), i.timestamp.realtime);
 524         s2 = format_timestamp(since2, sizeof(since2), i.timestamp.realtime);
 525
 526         if (s1)
 527                 printf("\t   Since: %s; %s\n", s2, s1);
 528         else if (s2)
 529                 printf("\t   Since: %s\n", s2);
 530
 531         if (i.leader > 0) {
 532                 _cleanup_free_ char *t = NULL;
 533
 534                 printf("\t  Leader: %"PRIu32, i.leader);
 535
 536                 get_process_comm(i.leader, &t);
 537                 if (t)
 538                         printf(" (%s)", t);
 539
 540                 printf("\n");
 541         }
 542
 543         if (!isempty(i.seat)) {
 544                 printf("\t    Seat: %s", i.seat);
 545
 546                 if (i.vtnr > 0)
 547                         printf("; vc%u", i.vtnr);
 548
 549                 printf("\n");
 550         }
 551
 552         if (i.tty)
 553                 printf("\t     TTY: %s\n", i.tty);
 554         else if (i.display)
 555                 printf("\t Display: %s\n", i.display);
 556
 557         if (i.remote_host && i.remote_user)
 558                 printf("\t  Remote: %s@%s\n", i.remote_user, i.remote_host);
 559         else if (i.remote_host)
 560                 printf("\t  Remote: %s\n", i.remote_host);
 561         else if (i.remote_user)
 562                 printf("\t  Remote: user %s\n", i.remote_user);
 563         else if (i.remote)
 564                 printf("\t  Remote: Yes\n");
 565
 566         if (i.service) {
 567                 printf("\t Service: %s", i.service);
 568
 569                 if (i.type)
 570                         printf("; type %s", i.type);
 571
 572                 if (i.class)
 573                         printf("; class %s", i.class);
 574
 575                 printf("\n");
 576         } else if (i.type) {
 577                 printf("\t    Type: %s", i.type);
 578
 579                 if (i.class)
 580                         printf("; class %s", i.class);
 581
 582                 printf("\n");
 583         } else if (i.class)
 584                 printf("\t   Class: %s\n", i.class);
 585
 586         if (!isempty(i.desktop))
 587                 printf("\t Desktop: %s\n", i.desktop);
 588
 589         if (i.state)
 590                 printf("\t   State: %s\n", i.state);
 591
 592         if (i.scope) {
 593                 printf("\t    Unit: %s\n", i.scope);
 594 #if 0 /// UNNEEDED by elogind
 595                 show_unit_cgroup(bus, "org.freedesktop.systemd1.Scope", i.scope, i.leader);
 596
 597                 if (arg_transport == BUS_TRANSPORT_LOCAL) {
 598
 599                         show_journal_by_unit(
 600                                         stdout,
 601                                         i.scope,
 602                                         arg_output,
 603                                         0,
 604                                         i.timestamp.monotonic,
 605                                         arg_lines,
 606                                         0,
 607                                         get_output_flags() | OUTPUT_BEGIN_NEWLINE,
 608                                         SD_JOURNAL_LOCAL_ONLY,
 609                                         true,
 610                                         NULL);
 611                 }
 612 #endif // 0
 613         }
 614
 615         return 0;
 616 }
 617
 618 static int print_user_status_info(sd_bus *bus, const char *path, bool *new_line) {
 619
 620         static const struct bus_properties_map map[]  = {
 621                 { "Name",               "s",     NULL,                     offsetof(UserStatusInfo, name)                },
 622                 { "Linger",             "b",     NULL,                     offsetof(UserStatusInfo, linger)              },
 623                 { "Slice",              "s",     NULL,                     offsetof(UserStatusInfo, slice)               },
 624                 { "State",              "s",     NULL,                     offsetof(UserStatusInfo, state)               },
 625                 { "UID",                "u",     NULL,                     offsetof(UserStatusInfo, uid)                 },
 626                 { "Timestamp",          "t",     NULL,                     offsetof(UserStatusInfo, timestamp.realtime)  },
 627                 { "TimestampMonotonic", "t",     NULL,                     offsetof(UserStatusInfo, timestamp.monotonic) },
 628                 { "Display",            "(so)",  prop_map_first_of_struct, offsetof(UserStatusInfo, display)             },
 629                 { "Sessions",           "a(so)", prop_map_sessions_strv,   offsetof(UserStatusInfo, sessions)            },
 630                 {}
 631         };
 632
 633         char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], *s1;
 634         char since2[FORMAT_TIMESTAMP_MAX], *s2;
 635         _cleanup_(user_status_info_clear) UserStatusInfo i = {};
 636         int r;
 637
 638         r = bus_map_all_properties(bus, "org.freedesktop.login1", path, map, &i);
 639         if (r < 0)
 640                 return log_error_errno(r, "Could not get properties: %m");
 641
 642         if (*new_line)
 643                 printf("\n");
 644
 645         *new_line = true;
 646
 647         if (i.name)
 648                 printf("%s (%"PRIu32")\n", i.name, i.uid);
 649         else
 650                 printf("%"PRIu32"\n", i.uid);
 651
 652         s1 = format_timestamp_relative(since1, sizeof(since1), i.timestamp.realtime);
 653         s2 = format_timestamp(since2, sizeof(since2), i.timestamp.realtime);
 654
 655         if (s1)
 656                 printf("\t   Since: %s; %s\n", s2, s1);
 657         else if (s2)
 658                 printf("\t   Since: %s\n", s2);
 659
 660         if (!isempty(i.state))
 661                 printf("\t   State: %s\n", i.state);
 662
 663         if (!strv_isempty(i.sessions)) {
 664                 char **l;
 665                 printf("\tSessions:");
 666
 667                 STRV_FOREACH(l, i.sessions)
 668                         printf(" %s%s",
 669                                streq_ptr(*l, i.display) ? "*" : "",
 670                                *l);
 671
 672                 printf("\n");
 673         }
 674
 675         printf("\t  Linger: %s\n", yes_no(i.linger));
 676
 677         if (i.slice) {
 678                 printf("\t    Unit: %s\n", i.slice);
 679 #if 0 /// UNNEEDED by elogind
 680                 show_unit_cgroup(bus, "org.freedesktop.systemd1.Slice", i.slice, 0);
 681
 682                 show_journal_by_unit(
 683                                 stdout,
 684                                 i.slice,
 685                                 arg_output,
 686                                 0,
 687                                 i.timestamp.monotonic,
 688                                 arg_lines,
 689                                 0,
 690                                 get_output_flags() | OUTPUT_BEGIN_NEWLINE,
 691                                 SD_JOURNAL_LOCAL_ONLY,
 692                                 true,
 693                                 NULL);
 694 #endif // 0
 695         }
 696
 697         return 0;
 698 }
 699
 700 static int print_seat_status_info(sd_bus *bus, const char *path, bool *new_line) {
 701
 702         static const struct bus_properties_map map[]  = {
 703                 { "Id",            "s",     NULL, offsetof(SeatStatusInfo, id) },
 704                 { "ActiveSession", "(so)",  prop_map_first_of_struct, offsetof(SeatStatusInfo, active_session) },
 705                 { "Sessions",      "a(so)", prop_map_sessions_strv, offsetof(SeatStatusInfo, sessions) },
 706                 {}
 707         };
 708
 709         _cleanup_(seat_status_info_clear) SeatStatusInfo i = {};
 710         int r;
 711
 712         r = bus_map_all_properties(bus, "org.freedesktop.login1", path, map, &i);
 713         if (r < 0)
 714                 return log_error_errno(r, "Could not get properties: %m");
 715
 716         if (*new_line)
 717                 printf("\n");
 718
 719         *new_line = true;
 720
 721         printf("%s\n", strna(i.id));
 722
 723         if (!strv_isempty(i.sessions)) {
 724                 char **l;
 725                 printf("\tSessions:");
 726
 727                 STRV_FOREACH(l, i.sessions) {
 728                         if (streq_ptr(*l, i.active_session))
 729                                 printf(" *%s", *l);
 730                         else
 731                                 printf(" %s", *l);
 732                 }
 733
 734                 printf("\n");
 735         }
 736
 737         if (arg_transport == BUS_TRANSPORT_LOCAL) {
 738                 unsigned c;
 739
 740                 c = columns();
 741                 if (c > 21)
 742                         c -= 21;
 743                 else
 744                         c = 0;
 745
 746                 printf("\t Devices:\n");
 747
 748                 show_sysfs(i.id, "\t\t  ", c);
 749         }
 750
 751         return 0;
 752 }
 753
 754 #define property(name, fmt, ...)                                        \
 755         do {                                                            \
 756                 if (arg_value)                                          \
 757                         printf(fmt "\n", __VA_ARGS__);                  \
 758                 else                                                    \
 759                         printf("%s=" fmt "\n", name, __VA_ARGS__);      \
 760         } while(0)
 761
 762 static int print_property(const char *name, sd_bus_message *m, const char *contents) {
 763         int r;
 764
 765         assert(name);
 766         assert(m);
 767         assert(contents);
 768
 769         if (arg_property && !strv_find(arg_property, name))
 770                 /* skip what we didn't read */
 771                 return sd_bus_message_skip(m, contents);
 772
 773         switch (contents[0]) {
 774
 775         case SD_BUS_TYPE_STRUCT_BEGIN:
 776
 777                 if (contents[1] == SD_BUS_TYPE_STRING && STR_IN_SET(name, "Display", "Seat", "ActiveSession")) {
 778                         const char *s;
 779
 780                         r = sd_bus_message_read(m, "(so)", &s, NULL);
 781                         if (r < 0)
 782                                 return bus_log_parse_error(r);
 783
 784                         if (arg_all || !isempty(s))
 785                                 property(name, "%s", s);
 786
 787                         return 0;
 788
 789                 } else if (contents[1] == SD_BUS_TYPE_UINT32 && streq(name, "User")) {
 790                         uint32_t uid;
 791
 792                         r = sd_bus_message_read(m, "(uo)", &uid, NULL);
 793                         if (r < 0)
 794                                 return bus_log_parse_error(r);
 795
 796                         if (!uid_is_valid(uid)) {
 797                                 log_error("Invalid user ID: " UID_FMT, uid);
 798                                 return -EINVAL;
 799                         }
 800
 801                         property(name, UID_FMT, uid);
 802                         return 0;
 803                 }
 804
 805                 break;
 806
 807         case SD_BUS_TYPE_ARRAY:
 808
 809                 if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "Sessions")) {
 810                         const char *s;
 811                         bool space = false;
 812
 813                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(so)");
 814                         if (r < 0)
 815                                 return bus_log_parse_error(r);
 816
 817                         if (!arg_value)
 818                                 printf("%s=", name);
 819
 820                         while ((r = sd_bus_message_read(m, "(so)", &s, NULL)) > 0) {
 821                                 printf("%s%s", space ? " " : "", s);
 822                                 space = true;
 823                         }
 824
 825                         if (space || !arg_value)
 826                                 printf("\n");
 827
 828                         if (r < 0)
 829                                 return bus_log_parse_error(r);
 830
 831                         r = sd_bus_message_exit_container(m);
 832                         if (r < 0)
 833                                 return bus_log_parse_error(r);
 834
 835                         return 0;
 836                 }
 837
 838                 break;
 839         }
 840
 841         r = bus_print_property(name, m, arg_value, arg_all);
 842         if (r < 0)
 843                 return bus_log_parse_error(r);
 844
 845         if (r == 0) {
 846                 r = sd_bus_message_skip(m, contents);
 847                 if (r < 0)
 848                         return bus_log_parse_error(r);
 849
 850                 if (arg_all)
 851                         printf("%s=[unprintable]\n", name);
 852         }
 853
 854         return 0;
 855 }
 856
 857 static int show_properties(sd_bus *bus, const char *path, bool *new_line) {
 858         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 859         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 860         int r;
 861
 862         assert(bus);
 863         assert(path);
 864         assert(new_line);
 865
 866         r = sd_bus_call_method(
 867                         bus,
 868                         "org.freedesktop.login1",
 869                         path,
 870                         "org.freedesktop.DBus.Properties",
 871                         "GetAll",
 872                         &error,
 873                         &reply,
 874                         "s", "");
 875         if (r < 0)
 876                 return log_error_errno(r, "Failed to get properties: %s", bus_error_message(&error, r));
 877
 878         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "{sv}");
 879         if (r < 0)
 880                 return bus_log_parse_error(r);
 881
 882         if (*new_line)
 883                 printf("\n");
 884
 885         *new_line = true;
 886
 887         while ((r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) {
 888                 const char *name, *contents;
 889
 890                 r = sd_bus_message_read(reply, "s", &name);
 891                 if (r < 0)
 892                         return bus_log_parse_error(r);
 893
 894                 r = sd_bus_message_peek_type(reply, NULL, &contents);
 895                 if (r < 0)
 896                         return bus_log_parse_error(r);
 897
 898                 r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_VARIANT, contents);
 899                 if (r < 0)
 900                         return bus_log_parse_error(r);
 901
 902                 r = print_property(name, reply, contents);
 903                 if (r < 0)
 904                         return r;
 905
 906                 r = sd_bus_message_exit_container(reply);
 907                 if (r < 0)
 908                         return bus_log_parse_error(r);
 909
 910                 r = sd_bus_message_exit_container(reply);
 911                 if (r < 0)
 912                         return bus_log_parse_error(r);
 913         }
 914         if (r < 0)
 915                 return bus_log_parse_error(r);
 916
 917         r = sd_bus_message_exit_container(reply);
 918         if (r < 0)
 919                 return bus_log_parse_error(r);
 920
 921         return 0;
 922 }
 923
 924 static int show_session(int argc, char *argv[], void *userdata) {
 925         bool properties, new_line = false;
 926         sd_bus *bus = userdata;
 927         int r, i;
 928
 929         assert(bus);
 930         assert(argv);
 931
 932         properties = !strstr(argv[0], "status");
 933
 934         pager_open(arg_no_pager, false);
 935
 936         if (argc <= 1) {
 937                 /* If not argument is specified inspect the manager
 938                  * itself */
 939                 if (properties)
 940                         return show_properties(bus, "/org/freedesktop/login1", &new_line);
 941
 942                 /* And in the pretty case, show data of the calling session */
 943                 return print_session_status_info(bus, "/org/freedesktop/login1/session/self", &new_line);
 944         }
 945
 946         for (i = 1; i < argc; i++) {
 947                 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 948                 _cleanup_free_ char *path = NULL;
 949
 950                 r = get_session_path(bus, argv[1], &error, &path);
 951                 if (r < 0) {
 952                         log_error("Failed to get session path: %s", bus_error_message(&error, r));
 953                         return r;
 954                 }
 955
 956                 if (properties)
 957                         r = show_properties(bus, path, &new_line);
 958                 else
 959                         r = print_session_status_info(bus, path, &new_line);
 960
 961                 if (r < 0)
 962                         return r;
 963         }
 964
 965         return 0;
 966 }
 967
 968 static int show_user(int argc, char *argv[], void *userdata) {
 969         bool properties, new_line = false;
 970         sd_bus *bus = userdata;
 971         int r, i;
 972
 973         assert(bus);
 974         assert(argv);
 975
 976         properties = !strstr(argv[0], "status");
 977
 978         pager_open(arg_no_pager, false);
 979
 980         if (argc <= 1) {
 981                 /* If not argument is specified inspect the manager
 982                  * itself */
 983                 if (properties)
 984                         return show_properties(bus, "/org/freedesktop/login1", &new_line);
 985
 986                 return print_user_status_info(bus, "/org/freedesktop/login1/user/self", &new_line);
 987         }
 988
 989         for (i = 1; i < argc; i++) {
 990                 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 991                 _cleanup_(sd_bus_message_unrefp) sd_bus_message * reply = NULL;
 992                 const char *path = NULL;
 993                 uid_t uid;
 994
 995                 r = get_user_creds((const char**) (argv+i), &uid, NULL, NULL, NULL);
 996                 if (r < 0)
 997                         return log_error_errno(r, "Failed to look up user %s: %m", argv[i]);
 998
 999                 r = sd_bus_call_method(
1000                                 bus,
1001                                 "org.freedesktop.login1",
1002                                 "/org/freedesktop/login1",
1003                                 "org.freedesktop.login1.Manager",
1004                                 "GetUser",
1005                                 &error, &reply,
1006                                 "u", (uint32_t) uid);
1007                 if (r < 0) {
1008                         log_error("Failed to get user: %s", bus_error_message(&error, r));
1009                         return r;
1010                 }
1011
1012                 r = sd_bus_message_read(reply, "o", &path);
1013                 if (r < 0)
1014                         return bus_log_parse_error(r);
1015
1016                 if (properties)
1017                         r = show_properties(bus, path, &new_line);
1018                 else
1019                         r = print_user_status_info(bus, path, &new_line);
1020
1021                 if (r < 0)
1022                         return r;
1023         }
1024
1025         return 0;
1026 }
1027
1028 static int show_seat(int argc, char *argv[], void *userdata) {
1029         bool properties, new_line = false;
1030         sd_bus *bus = userdata;
1031         int r, i;
1032
1033         assert(bus);
1034         assert(argv);
1035
1036         properties = !strstr(argv[0], "status");
1037
1038         pager_open(arg_no_pager, false);
1039
1040         if (argc <= 1) {
1041                 /* If not argument is specified inspect the manager
1042                  * itself */
1043                 if (properties)
1044                         return show_properties(bus, "/org/freedesktop/login1", &new_line);
1045
1046                 return print_seat_status_info(bus, "/org/freedesktop/login1/seat/self", &new_line);
1047         }
1048
1049         for (i = 1; i < argc; i++) {
1050                 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1051                 _cleanup_(sd_bus_message_unrefp) sd_bus_message * reply = NULL;
1052                 const char *path = NULL;
1053
1054                 r = sd_bus_call_method(
1055                                 bus,
1056                                 "org.freedesktop.login1",
1057                                 "/org/freedesktop/login1",
1058                                 "org.freedesktop.login1.Manager",
1059                                 "GetSeat",
1060                                 &error, &reply,
1061                                 "s", argv[i]);
1062                 if (r < 0) {
1063                         log_error("Failed to get seat: %s", bus_error_message(&error, r));
1064                         return r;
1065                 }
1066
1067                 r = sd_bus_message_read(reply, "o", &path);
1068                 if (r < 0)
1069                         return bus_log_parse_error(r);
1070
1071                 if (properties)
1072                         r = show_properties(bus, path, &new_line);
1073                 else
1074                         r = print_seat_status_info(bus, path, &new_line);
1075
1076                 if (r < 0)
1077                         return r;
1078         }
1079
1080         return 0;
1081 }
1082
1083 static int activate(int argc, char *argv[], void *userdata) {
1084         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1085         sd_bus *bus = userdata;
1086         char *short_argv[3];
1087         int r, i;
1088
1089         assert(bus);
1090         assert(argv);
1091
1092         polkit_agent_open_if_enabled();
1093
1094         if (argc < 2) {
1095                 /* No argument? Let's convert this into the empty
1096                  * session name, which the calls will then resolve to
1097                  * the caller's session. */
1098
1099                 short_argv[0] = argv[0];
1100                 short_argv[1] = (char*) "";
1101                 short_argv[2] = NULL;
1102
1103                 argv = short_argv;
1104                 argc = 2;
1105         }
1106
1107         for (i = 1; i < argc; i++) {
1108
1109                 r = sd_bus_call_method(
1110                                 bus,
1111                                 "org.freedesktop.login1",
1112                                 "/org/freedesktop/login1",
1113                                 "org.freedesktop.login1.Manager",
1114                                 streq(argv[0], "lock-session")      ? "LockSession" :
1115                                 streq(argv[0], "unlock-session")    ? "UnlockSession" :
1116                                 streq(argv[0], "terminate-session") ? "TerminateSession" :
1117                                                                       "ActivateSession",
1118                                 &error, NULL,
1119                                 "s", argv[i]);
1120                 if (r < 0) {
1121                         log_error("Failed to issue method call: %s", bus_error_message(&error, -r));
1122                         return r;
1123                 }
1124         }
1125
1126         return 0;
1127 }
1128
1129 static int kill_session(int argc, char *argv[], void *userdata) {
1130         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1131         sd_bus *bus = userdata;
1132         int r, i;
1133
1134         assert(bus);
1135         assert(argv);
1136
1137         polkit_agent_open_if_enabled();
1138
1139         if (!arg_kill_who)
1140                 arg_kill_who = "all";
1141
1142         for (i = 1; i < argc; i++) {
1143
1144                 r = sd_bus_call_method(
1145                         bus,
1146                         "org.freedesktop.login1",
1147                         "/org/freedesktop/login1",
1148                         "org.freedesktop.login1.Manager",
1149                         "KillSession",
1150                         &error, NULL,
1151                         "ssi", argv[i], arg_kill_who, arg_signal);
1152                 if (r < 0) {
1153                         log_error("Could not kill session: %s", bus_error_message(&error, -r));
1154                         return r;
1155                 }
1156         }
1157
1158         return 0;
1159 }
1160
1161 static int enable_linger(int argc, char *argv[], void *userdata) {
1162         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1163         sd_bus *bus = userdata;
1164         char* short_argv[3];
1165         bool b;
1166         int r, i;
1167
1168         assert(bus);
1169         assert(argv);
1170
1171         polkit_agent_open_if_enabled();
1172
1173         b = streq(argv[0], "enable-linger");
1174
1175         if (argc < 2) {
1176                 short_argv[0] = argv[0];
1177                 short_argv[1] = (char*) "";
1178                 short_argv[2] = NULL;
1179                 argv = short_argv;
1180                 argc = 2;
1181         }
1182
1183         for (i = 1; i < argc; i++) {
1184                 uid_t uid;
1185
1186                 if (isempty(argv[i]))
1187                         uid = UID_INVALID;
1188                 else {
1189                         r = get_user_creds((const char**) (argv+i), &uid, NULL, NULL, NULL);
1190                         if (r < 0)
1191                                 return log_error_errno(r, "Failed to look up user %s: %m", argv[i]);
1192                 }
1193
1194                 r = sd_bus_call_method(
1195                         bus,
1196                         "org.freedesktop.login1",
1197                         "/org/freedesktop/login1",
1198                         "org.freedesktop.login1.Manager",
1199                         "SetUserLinger",
1200                         &error, NULL,
1201                         "ubb", (uint32_t) uid, b, true);
1202                 if (r < 0) {
1203                         log_error("Could not enable linger: %s", bus_error_message(&error, -r));
1204                         return r;
1205                 }
1206         }
1207
1208         return 0;
1209 }
1210
1211 static int terminate_user(int argc, char *argv[], void *userdata) {
1212         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1213         sd_bus *bus = userdata;
1214         int r, i;
1215
1216         assert(bus);
1217         assert(argv);
1218
1219         polkit_agent_open_if_enabled();
1220
1221         for (i = 1; i < argc; i++) {
1222                 uid_t uid;
1223
1224                 r = get_user_creds((const char**) (argv+i), &uid, NULL, NULL, NULL);
1225                 if (r < 0)
1226                         return log_error_errno(r, "Failed to look up user %s: %m", argv[i]);
1227
1228                 r = sd_bus_call_method(
1229                         bus,
1230                         "org.freedesktop.login1",
1231                         "/org/freedesktop/login1",
1232                         "org.freedesktop.login1.Manager",
1233                         "TerminateUser",
1234                         &error, NULL,
1235                         "u", (uint32_t) uid);
1236                 if (r < 0) {
1237                         log_error("Could not terminate user: %s", bus_error_message(&error, -r));
1238                         return r;
1239                 }
1240         }
1241
1242         return 0;
1243 }
1244
1245 static int kill_user(int argc, char *argv[], void *userdata) {
1246         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1247         sd_bus *bus = userdata;
1248         int r, i;
1249
1250         assert(bus);
1251         assert(argv);
1252
1253         polkit_agent_open_if_enabled();
1254
1255         if (!arg_kill_who)
1256                 arg_kill_who = "all";
1257
1258         for (i = 1; i < argc; i++) {
1259                 uid_t uid;
1260
1261                 r = get_user_creds((const char**) (argv+i), &uid, NULL, NULL, NULL);
1262                 if (r < 0)
1263                         return log_error_errno(r, "Failed to look up user %s: %m", argv[i]);
1264
1265                 r = sd_bus_call_method(
1266                         bus,
1267                         "org.freedesktop.login1",
1268                         "/org/freedesktop/login1",
1269                         "org.freedesktop.login1.Manager",
1270                         "KillUser",
1271                         &error, NULL,
1272                         "ui", (uint32_t) uid, arg_signal);
1273                 if (r < 0) {
1274                         log_error("Could not kill user: %s", bus_error_message(&error, -r));
1275                         return r;
1276                 }
1277         }
1278
1279         return 0;
1280 }
1281
1282 static int attach(int argc, char *argv[], void *userdata) {
1283         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1284         sd_bus *bus = userdata;
1285         int r, i;
1286
1287         assert(bus);
1288         assert(argv);
1289
1290         polkit_agent_open_if_enabled();
1291
1292         for (i = 2; i < argc; i++) {
1293
1294                 r = sd_bus_call_method(
1295                         bus,
1296                         "org.freedesktop.login1",
1297                         "/org/freedesktop/login1",
1298                         "org.freedesktop.login1.Manager",
1299                         "AttachDevice",
1300                         &error, NULL,
1301                         "ssb", argv[1], argv[i], true);
1302
1303                 if (r < 0) {
1304                         log_error("Could not attach device: %s", bus_error_message(&error, -r));
1305                         return r;
1306                 }
1307         }
1308
1309         return 0;
1310 }
1311
1312 static int flush_devices(int argc, char *argv[], void *userdata) {
1313         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1314         sd_bus *bus = userdata;
1315         int r;
1316
1317         assert(bus);
1318         assert(argv);
1319
1320         polkit_agent_open_if_enabled();
1321
1322         r = sd_bus_call_method(
1323                         bus,
1324                         "org.freedesktop.login1",
1325                         "/org/freedesktop/login1",
1326                         "org.freedesktop.login1.Manager",
1327                         "FlushDevices",
1328                         &error, NULL,
1329                         "b", true);
1330         if (r < 0)
1331                 log_error("Could not flush devices: %s", bus_error_message(&error, -r));
1332
1333         return r;
1334 }
1335
1336 static int lock_sessions(int argc, char *argv[], void *userdata) {
1337         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1338         sd_bus *bus = userdata;
1339         int r;
1340
1341         assert(bus);
1342         assert(argv);
1343
1344         polkit_agent_open_if_enabled();
1345
1346         r = sd_bus_call_method(
1347                         bus,
1348                         "org.freedesktop.login1",
1349                         "/org/freedesktop/login1",
1350                         "org.freedesktop.login1.Manager",
1351                         streq(argv[0], "lock-sessions") ? "LockSessions" : "UnlockSessions",
1352                         &error, NULL,
1353                         NULL);
1354         if (r < 0)
1355                 log_error("Could not lock sessions: %s", bus_error_message(&error, -r));
1356
1357         return r;
1358 }
1359
1360 static int terminate_seat(int argc, char *argv[], void *userdata) {
1361         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1362         sd_bus *bus = userdata;
1363         int r, i;
1364
1365         assert(bus);
1366         assert(argv);
1367
1368         polkit_agent_open_if_enabled();
1369
1370         for (i = 1; i < argc; i++) {
1371
1372                 r = sd_bus_call_method(
1373                         bus,
1374                         "org.freedesktop.login1",
1375                         "/org/freedesktop/login1",
1376                         "org.freedesktop.login1.Manager",
1377                         "TerminateSeat",
1378                         &error, NULL,
1379                         "s", argv[i]);
1380                 if (r < 0) {
1381                         log_error("Could not terminate seat: %s", bus_error_message(&error, -r));
1382                         return r;
1383                 }
1384         }
1385
1386         return 0;
1387 }
1388
1389 static int help(int argc, char *argv[], void *userdata) {
1390
1391         printf("%s [OPTIONS...] {COMMAND} ...\n\n"
1392                "Send control commands to or query the login manager.\n\n"
1393                "  -h --help                Show this help\n"
1394                "     --version             Show package version\n"
1395                "     --no-pager            Do not pipe output into a pager\n"
1396 #if 1 /// elogind supports --no-wall
1397                "     --no-wall             Do not print any wall message\n"
1398 #endif // 1
1399                "     --no-legend           Do not show the headers and footers\n"
1400                "     --no-ask-password     Don't prompt for password\n"
1401                "  -H --host=[USER@]HOST    Operate on remote host\n"
1402                "  -M --machine=CONTAINER   Operate on local container\n"
1403                "  -p --property=NAME       Show only properties by this name\n"
1404                "  -a --all                 Show all properties, including empty ones\n"
1405                "     --value               When showing properties, only print the value\n"
1406                "  -l --full                Do not ellipsize output\n"
1407                "     --kill-who=WHO        Who to send signal to\n"
1408                "  -s --signal=SIGNAL       Which signal to send\n"
1409 #if 0 /// UNNEEDED by elogind
1410                "  -n --lines=INTEGER       Number of journal entries to show\n"
1411                "  -o --output=STRING       Change journal output mode (short, short-monotonic,\n"
1412                "                           verbose, export, json, json-pretty, json-sse, cat)\n\n"
1413 #else
1414                 /// elogind can cancel shutdowns and allows to ignore inhibitors
1415                "  -c                       Cancel a pending shutdown or reboot\n"
1416                "  -i --ignore-inhibitors   When shutting down or sleeping, ignore inhibitors\n\n"
1417 #endif // 0
1418                "Session Commands:\n"
1419                "  list-sessions            List sessions\n"
1420                "  session-status [ID...]   Show session status\n"
1421                "  show-session [ID...]     Show properties of sessions or the manager\n"
1422                "  activate [ID]            Activate a session\n"
1423                "  lock-session [ID...]     Screen lock one or more sessions\n"
1424                "  unlock-session [ID...]   Screen unlock one or more sessions\n"
1425                "  lock-sessions            Screen lock all current sessions\n"
1426                "  unlock-sessions          Screen unlock all current sessions\n"
1427                "  terminate-session ID...  Terminate one or more sessions\n"
1428                "  kill-session ID...       Send signal to processes of a session\n\n"
1429                "User Commands:\n"
1430                "  list-users               List users\n"
1431                "  user-status [USER...]    Show user status\n"
1432                "  show-user [USER...]      Show properties of users or the manager\n"
1433                "  enable-linger [USER...]  Enable linger state of one or more users\n"
1434                "  disable-linger [USER...] Disable linger state of one or more users\n"
1435                "  terminate-user USER...   Terminate all sessions of one or more users\n"
1436                "  kill-user USER...        Send signal to processes of a user\n\n"
1437                "Seat Commands:\n"
1438                "  list-seats               List seats\n"
1439                "  seat-status [NAME...]    Show seat status\n"
1440                "  show-seat [NAME...]      Show properties of seats or the manager\n"
1441                "  attach NAME DEVICE...    Attach one or more devices to a seat\n"
1442                "  flush-devices            Flush all device associations\n"
1443                "  terminate-seat NAME...   Terminate all sessions on one or more seats\n\n"
1444 #if 1 /// elogind adds some system commands to loginctl
1445                "System Commands:\n"
1446                "  poweroff [TIME] [WALL...] Turn off the machine\n"
1447                "  reboot   [TIME] [WALL...] Reboot the machine\n"
1448                "  suspend                   Suspend the machine to memory\n"
1449                "  hibernate                 Suspend the machine to disk\n"
1450                "  hybrid-sleep              Suspend the machine to memory and disk\n"
1451 #endif // 1
1452                , program_invocation_short_name);
1453
1454         return 0;
1455 }
1456
1457 static int parse_argv(int argc, char *argv[]) {
1458
1459         enum {
1460                 ARG_VERSION = 0x100,
1461                 ARG_VALUE,
1462                 ARG_NO_PAGER,
1463 #if 1 /// elogind supports --no-wall
1464                 ARG_NO_WALL,
1465 #endif // 1
1466                 ARG_NO_LEGEND,
1467                 ARG_KILL_WHO,
1468                 ARG_NO_ASK_PASSWORD,
1469         };
1470
1471         static const struct option options[] = {
1472                 { "help",            no_argument,       NULL, 'h'                 },
1473                 { "version",         no_argument,       NULL, ARG_VERSION         },
1474                 { "property",        required_argument, NULL, 'p'                 },
1475                 { "all",             no_argument,       NULL, 'a'                 },
1476                 { "value",           no_argument,       NULL, ARG_VALUE           },
1477                 { "full",            no_argument,       NULL, 'l'                 },
1478                 { "no-pager",        no_argument,       NULL, ARG_NO_PAGER        },
1479 #if 1 /// elogind supports --no-wall
1480                 { "no-wall",         no_argument,       NULL, ARG_NO_WALL         },
1481 #endif // 1
1482                 { "no-legend",       no_argument,       NULL, ARG_NO_LEGEND       },
1483                 { "kill-who",        required_argument, NULL, ARG_KILL_WHO        },
1484                 { "signal",          required_argument, NULL, 's'                 },
1485                 { "host",            required_argument, NULL, 'H'                 },
1486                 { "machine",         required_argument, NULL, 'M'                 },
1487                 { "no-ask-password", no_argument,       NULL, ARG_NO_ASK_PASSWORD },
1488 #if 0 /// UNNEEDED by elogind
1489                 { "lines",           required_argument, NULL, 'n'                 },
1490                 { "output",          required_argument, NULL, 'o'                 },
1491 #else
1492                 /// elogind allows to ignore inhibitors for system commands.
1493                 { "ignore-inhibitors", no_argument,     NULL, 'i'                 },
1494 #endif // 0
1495                 {}
1496         };
1497
1498         int c, r;
1499
1500         assert(argc >= 0);
1501         assert(argv);
1502
1503 #if 0 /// elogind adds some system commands to loginctl
1504         while ((c = getopt_long(argc, argv, "hp:als:H:M:n:o:", options, NULL)) >= 0)
1505 #else
1506         while ((c = getopt_long(argc, argv, "hp:als:H:M:n:o:ci", options, NULL)) >= 0)
1507 #endif // 0
1508
1509                 switch (c) {
1510
1511                 case 'h':
1512                         help(0, NULL, NULL);
1513                         return 0;
1514
1515                 case ARG_VERSION:
1516                         return version();
1517
1518                 case 'p': {
1519                         r = strv_extend(&arg_property, optarg);
1520                         if (r < 0)
1521                                 return log_oom();
1522
1523                         /* If the user asked for a particular
1524                          * property, show it to him, even if it is
1525                          * empty. */
1526                         arg_all = true;
1527                         break;
1528                 }
1529
1530                 case 'a':
1531                         arg_all = true;
1532                         break;
1533
1534                 case ARG_VALUE:
1535                         arg_value = true;
1536                         break;
1537
1538                 case 'l':
1539                         arg_full = true;
1540                         break;
1541
1542 #if 0 /// UNNEEDED by elogind
1543                 case 'n':
1544                         if (safe_atou(optarg, &arg_lines) < 0) {
1545                                 log_error("Failed to parse lines '%s'", optarg);
1546                                 return -EINVAL;
1547                         }
1548                         break;
1549
1550                 case 'o':
1551                         arg_output = output_mode_from_string(optarg);
1552                         if (arg_output < 0) {
1553                                 log_error("Unknown output '%s'.", optarg);
1554                                 return -EINVAL;
1555                         }
1556                         break;
1557 #endif // 0
1558
1559                 case ARG_NO_PAGER:
1560                         arg_no_pager = true;
1561                         break;
1562 #if 1 /// elogind supports --no-wall
1563                 case ARG_NO_WALL:
1564                         arg_no_wall = true;
1565                         break;
1566 #endif // 1
1567
1568                 case ARG_NO_LEGEND:
1569                         arg_legend = false;
1570                         break;
1571
1572                 case ARG_NO_ASK_PASSWORD:
1573                         arg_ask_password = false;
1574                         break;
1575
1576                 case ARG_KILL_WHO:
1577                         arg_kill_who = optarg;
1578                         break;
1579
1580                 case 's':
1581                         arg_signal = signal_from_string_try_harder(optarg);
1582                         if (arg_signal < 0) {
1583                                 log_error("Failed to parse signal string %s.", optarg);
1584                                 return -EINVAL;
1585                         }
1586                         break;
1587
1588                 case 'H':
1589                         arg_transport = BUS_TRANSPORT_REMOTE;
1590                         arg_host = optarg;
1591                         break;
1592
1593                 case 'M':
1594                         arg_transport = BUS_TRANSPORT_MACHINE;
1595                         arg_host = optarg;
1596                         break;
1597 #if 1 /// elogind can cancel shutdowns and allows to ignore inhibitors
1598                 case 'c':
1599                         arg_action = ACTION_CANCEL_SHUTDOWN;
1600                         break;
1601
1602                 case 'i':
1603                         arg_ignore_inhibitors = true;
1604                         break;
1605 #endif // 1
1606                 case '?':
1607                         return -EINVAL;
1608
1609                 default:
1610                         assert_not_reached("Unhandled option");
1611                 }
1612
1613         return 1;
1614 }
1615
1616 static int loginctl_main(int argc, char *argv[], sd_bus *bus) {
1617
1618         static const Verb verbs[] = {
1619                 { "help",              VERB_ANY, VERB_ANY, 0,            help              },
1620                 { "list-sessions",     VERB_ANY, 1,        VERB_DEFAULT, list_sessions     },
1621                 { "session-status",    VERB_ANY, VERB_ANY, 0,            show_session      },
1622                 { "show-session",      VERB_ANY, VERB_ANY, 0,            show_session      },
1623                 { "activate",          VERB_ANY, 2,        0,            activate          },
1624                 { "lock-session",      VERB_ANY, VERB_ANY, 0,            activate          },
1625                 { "unlock-session",    VERB_ANY, VERB_ANY, 0,            activate          },
1626                 { "lock-sessions",     VERB_ANY, 1,        0,            lock_sessions     },
1627                 { "unlock-sessions",   VERB_ANY, 1,        0,            lock_sessions     },
1628                 { "terminate-session", 2,        VERB_ANY, 0,            activate          },
1629                 { "kill-session",      2,        VERB_ANY, 0,            kill_session      },
1630                 { "list-users",        VERB_ANY, 1,        0,            list_users        },
1631                 { "user-status",       VERB_ANY, VERB_ANY, 0,            show_user         },
1632                 { "show-user",         VERB_ANY, VERB_ANY, 0,            show_user         },
1633                 { "enable-linger",     VERB_ANY, VERB_ANY, 0,            enable_linger     },
1634                 { "disable-linger",    VERB_ANY, VERB_ANY, 0,            enable_linger     },
1635                 { "terminate-user",    2,        VERB_ANY, 0,            terminate_user    },
1636                 { "kill-user",         2,        VERB_ANY, 0,            kill_user         },
1637                 { "list-seats",        VERB_ANY, 1,        0,            list_seats        },
1638                 { "seat-status",       VERB_ANY, VERB_ANY, 0,            show_seat         },
1639                 { "show-seat",         VERB_ANY, VERB_ANY, 0,            show_seat         },
1640                 { "attach",            3,        VERB_ANY, 0,            attach            },
1641                 { "flush-devices",     VERB_ANY, 1,        0,            flush_devices     },
1642                 { "terminate-seat",    2,        VERB_ANY, 0,            terminate_seat    },
1643 #if 1 /// elogind adds some system commands to loginctl
1644                 { "poweroff",          VERB_ANY, VERB_ANY, 0,            start_special     },
1645                 { "reboot",            VERB_ANY, VERB_ANY, 0,            start_special     },
1646                 { "suspend",           VERB_ANY, 1,        0,            start_special     },
1647                 { "hibernate",         VERB_ANY, 1,        0,            start_special     },
1648                 { "hybrid-sleep",      VERB_ANY, 1,        0,            start_special     },
1649                 { "cancel-shutdown",   VERB_ANY, 1,        0,            start_special     },
1650 #endif // 1
1651                 {}
1652         };
1653
1654 #if 1 /// elogind can do shutdown and allows its cancellation
1655         if ((argc == optind) && (ACTION_CANCEL_SHUTDOWN == arg_action))
1656                 return elogind_cancel_shutdown(bus);
1657 #endif // 1
1658         return dispatch_verb(argc, argv, verbs, bus);
1659 }
1660
1661 int main(int argc, char *argv[]) {
1662         sd_bus *bus = NULL;
1663         int r;
1664
1665         setlocale(LC_ALL, "");
1666         elogind_set_program_name(argv[0]);
1667         log_parse_environment();
1668         log_open();
1669
1670         r = parse_argv(argc, argv);
1671         if (r <= 0)
1672                 goto finish;
1673
1674         r = bus_connect_transport(arg_transport, arg_host, false, &bus);
1675         if (r < 0) {
1676                 log_error_errno(r, "Failed to create bus connection: %m");
1677                 goto finish;
1678         }
1679
1680         sd_bus_set_allow_interactive_authorization(bus, arg_ask_password);
1681
1682         r = loginctl_main(argc, argv, bus);
1683
1684 finish:
1685         sd_bus_flush_close_unref(bus);
1686
1687         pager_close();
1688 #if 0 /// elogind does that in elogind_cleanup()
1689         polkit_agent_close();
1690 #endif // 0
1691
1692         strv_free(arg_property);
1693
1694 #if 1 /// elogind has some own cleanups to do
1695         elogind_cleanup();
1696 #endif // 1
1697         return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
1698 }