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         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 503         char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], *s1;
 504         char since2[FORMAT_TIMESTAMP_MAX], *s2;
 505         _cleanup_(session_status_info_clear) SessionStatusInfo i = {};
 506         int r;
 507
 508         r = bus_map_all_properties(bus, "org.freedesktop.login1", path, map, &error, &i);
 509         if (r < 0)
 510                 return log_error_errno(r, "Could not get properties: %s", bus_error_message(&error, r));
 511
 512         if (*new_line)
 513                 printf("\n");
 514
 515         *new_line = true;
 516
 517         printf("%s - ", strna(i.id));
 518
 519         if (i.name)
 520                 printf("%s (%"PRIu32")\n", i.name, i.uid);
 521         else
 522                 printf("%"PRIu32"\n", i.uid);
 523
 524         s1 = format_timestamp_relative(since1, sizeof(since1), i.timestamp.realtime);
 525         s2 = format_timestamp(since2, sizeof(since2), i.timestamp.realtime);
 526
 527         if (s1)
 528                 printf("\t   Since: %s; %s\n", s2, s1);
 529         else if (s2)
 530                 printf("\t   Since: %s\n", s2);
 531
 532         if (i.leader > 0) {
 533                 _cleanup_free_ char *t = NULL;
 534
 535                 printf("\t  Leader: %"PRIu32, i.leader);
 536
 537                 get_process_comm(i.leader, &t);
 538                 if (t)
 539                         printf(" (%s)", t);
 540
 541                 printf("\n");
 542         }
 543
 544         if (!isempty(i.seat)) {
 545                 printf("\t    Seat: %s", i.seat);
 546
 547                 if (i.vtnr > 0)
 548                         printf("; vc%u", i.vtnr);
 549
 550                 printf("\n");
 551         }
 552
 553         if (i.tty)
 554                 printf("\t     TTY: %s\n", i.tty);
 555         else if (i.display)
 556                 printf("\t Display: %s\n", i.display);
 557
 558         if (i.remote_host && i.remote_user)
 559                 printf("\t  Remote: %s@%s\n", i.remote_user, i.remote_host);
 560         else if (i.remote_host)
 561                 printf("\t  Remote: %s\n", i.remote_host);
 562         else if (i.remote_user)
 563                 printf("\t  Remote: user %s\n", i.remote_user);
 564         else if (i.remote)
 565                 printf("\t  Remote: Yes\n");
 566
 567         if (i.service) {
 568                 printf("\t Service: %s", i.service);
 569
 570                 if (i.type)
 571                         printf("; type %s", i.type);
 572
 573                 if (i.class)
 574                         printf("; class %s", i.class);
 575
 576                 printf("\n");
 577         } else if (i.type) {
 578                 printf("\t    Type: %s", i.type);
 579
 580                 if (i.class)
 581                         printf("; class %s", i.class);
 582
 583                 printf("\n");
 584         } else if (i.class)
 585                 printf("\t   Class: %s\n", i.class);
 586
 587         if (!isempty(i.desktop))
 588                 printf("\t Desktop: %s\n", i.desktop);
 589
 590         if (i.state)
 591                 printf("\t   State: %s\n", i.state);
 592
 593         if (i.scope) {
 594                 printf("\t    Unit: %s\n", i.scope);
 595 #if 0 /// UNNEEDED by elogind
 596                 show_unit_cgroup(bus, "org.freedesktop.systemd1.Scope", i.scope, i.leader);
 597
 598                 if (arg_transport == BUS_TRANSPORT_LOCAL) {
 599
 600                         show_journal_by_unit(
 601                                         stdout,
 602                                         i.scope,
 603                                         arg_output,
 604                                         0,
 605                                         i.timestamp.monotonic,
 606                                         arg_lines,
 607                                         0,
 608                                         get_output_flags() | OUTPUT_BEGIN_NEWLINE,
 609                                         SD_JOURNAL_LOCAL_ONLY,
 610                                         true,
 611                                         NULL);
 612                 }
 613 #endif // 0
 614         }
 615
 616         return 0;
 617 }
 618
 619 static int print_user_status_info(sd_bus *bus, const char *path, bool *new_line) {
 620
 621         static const struct bus_properties_map map[]  = {
 622                 { "Name",               "s",     NULL,                     offsetof(UserStatusInfo, name)                },
 623                 { "Linger",             "b",     NULL,                     offsetof(UserStatusInfo, linger)              },
 624                 { "Slice",              "s",     NULL,                     offsetof(UserStatusInfo, slice)               },
 625                 { "State",              "s",     NULL,                     offsetof(UserStatusInfo, state)               },
 626                 { "UID",                "u",     NULL,                     offsetof(UserStatusInfo, uid)                 },
 627                 { "Timestamp",          "t",     NULL,                     offsetof(UserStatusInfo, timestamp.realtime)  },
 628                 { "TimestampMonotonic", "t",     NULL,                     offsetof(UserStatusInfo, timestamp.monotonic) },
 629                 { "Display",            "(so)",  prop_map_first_of_struct, offsetof(UserStatusInfo, display)             },
 630                 { "Sessions",           "a(so)", prop_map_sessions_strv,   offsetof(UserStatusInfo, sessions)            },
 631                 {}
 632         };
 633
 634         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 635         char since1[FORMAT_TIMESTAMP_RELATIVE_MAX], *s1;
 636         char since2[FORMAT_TIMESTAMP_MAX], *s2;
 637         _cleanup_(user_status_info_clear) UserStatusInfo i = {};
 638         int r;
 639
 640         r = bus_map_all_properties(bus, "org.freedesktop.login1", path, map, &error, &i);
 641         if (r < 0)
 642                 return log_error_errno(r, "Could not get properties: %s", bus_error_message(&error, r));
 643
 644         if (*new_line)
 645                 printf("\n");
 646
 647         *new_line = true;
 648
 649         if (i.name)
 650                 printf("%s (%"PRIu32")\n", i.name, i.uid);
 651         else
 652                 printf("%"PRIu32"\n", i.uid);
 653
 654         s1 = format_timestamp_relative(since1, sizeof(since1), i.timestamp.realtime);
 655         s2 = format_timestamp(since2, sizeof(since2), i.timestamp.realtime);
 656
 657         if (s1)
 658                 printf("\t   Since: %s; %s\n", s2, s1);
 659         else if (s2)
 660                 printf("\t   Since: %s\n", s2);
 661
 662         if (!isempty(i.state))
 663                 printf("\t   State: %s\n", i.state);
 664
 665         if (!strv_isempty(i.sessions)) {
 666                 char **l;
 667                 printf("\tSessions:");
 668
 669                 STRV_FOREACH(l, i.sessions)
 670                         printf(" %s%s",
 671                                streq_ptr(*l, i.display) ? "*" : "",
 672                                *l);
 673
 674                 printf("\n");
 675         }
 676
 677         printf("\t  Linger: %s\n", yes_no(i.linger));
 678
 679         if (i.slice) {
 680                 printf("\t    Unit: %s\n", i.slice);
 681 #if 0 /// UNNEEDED by elogind
 682                 show_unit_cgroup(bus, "org.freedesktop.systemd1.Slice", i.slice, 0);
 683
 684                 show_journal_by_unit(
 685                                 stdout,
 686                                 i.slice,
 687                                 arg_output,
 688                                 0,
 689                                 i.timestamp.monotonic,
 690                                 arg_lines,
 691                                 0,
 692                                 get_output_flags() | OUTPUT_BEGIN_NEWLINE,
 693                                 SD_JOURNAL_LOCAL_ONLY,
 694                                 true,
 695                                 NULL);
 696 #endif // 0
 697         }
 698
 699         return 0;
 700 }
 701
 702 static int print_seat_status_info(sd_bus *bus, const char *path, bool *new_line) {
 703
 704         static const struct bus_properties_map map[]  = {
 705                 { "Id",            "s",     NULL, offsetof(SeatStatusInfo, id) },
 706                 { "ActiveSession", "(so)",  prop_map_first_of_struct, offsetof(SeatStatusInfo, active_session) },
 707                 { "Sessions",      "a(so)", prop_map_sessions_strv, offsetof(SeatStatusInfo, sessions) },
 708                 {}
 709         };
 710
 711         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 712         _cleanup_(seat_status_info_clear) SeatStatusInfo i = {};
 713         int r;
 714
 715         r = bus_map_all_properties(bus, "org.freedesktop.login1", path, map, &error, &i);
 716         if (r < 0)
 717                 return log_error_errno(r, "Could not get properties: %s", bus_error_message(&error, r));
 718
 719         if (*new_line)
 720                 printf("\n");
 721
 722         *new_line = true;
 723
 724         printf("%s\n", strna(i.id));
 725
 726         if (!strv_isempty(i.sessions)) {
 727                 char **l;
 728                 printf("\tSessions:");
 729
 730                 STRV_FOREACH(l, i.sessions) {
 731                         if (streq_ptr(*l, i.active_session))
 732                                 printf(" *%s", *l);
 733                         else
 734                                 printf(" %s", *l);
 735                 }
 736
 737                 printf("\n");
 738         }
 739
 740         if (arg_transport == BUS_TRANSPORT_LOCAL) {
 741                 unsigned c;
 742
 743                 c = columns();
 744                 if (c > 21)
 745                         c -= 21;
 746                 else
 747                         c = 0;
 748
 749                 printf("\t Devices:\n");
 750
 751                 show_sysfs(i.id, "\t\t  ", c);
 752         }
 753
 754         return 0;
 755 }
 756
 757 #define property(name, fmt, ...)                                        \
 758         do {                                                            \
 759                 if (arg_value)                                          \
 760                         printf(fmt "\n", __VA_ARGS__);                  \
 761                 else                                                    \
 762                         printf("%s=" fmt "\n", name, __VA_ARGS__);      \
 763         } while(0)
 764
 765 static int print_property(const char *name, sd_bus_message *m, const char *contents) {
 766         int r;
 767
 768         assert(name);
 769         assert(m);
 770         assert(contents);
 771
 772         if (arg_property && !strv_find(arg_property, name))
 773                 /* skip what we didn't read */
 774                 return sd_bus_message_skip(m, contents);
 775
 776         switch (contents[0]) {
 777
 778         case SD_BUS_TYPE_STRUCT_BEGIN:
 779
 780                 if (contents[1] == SD_BUS_TYPE_STRING && STR_IN_SET(name, "Display", "Seat", "ActiveSession")) {
 781                         const char *s;
 782
 783                         r = sd_bus_message_read(m, "(so)", &s, NULL);
 784                         if (r < 0)
 785                                 return bus_log_parse_error(r);
 786
 787                         if (arg_all || !isempty(s))
 788                                 property(name, "%s", s);
 789
 790                         return 0;
 791
 792                 } else if (contents[1] == SD_BUS_TYPE_UINT32 && streq(name, "User")) {
 793                         uint32_t uid;
 794
 795                         r = sd_bus_message_read(m, "(uo)", &uid, NULL);
 796                         if (r < 0)
 797                                 return bus_log_parse_error(r);
 798
 799                         if (!uid_is_valid(uid)) {
 800                                 log_error("Invalid user ID: " UID_FMT, uid);
 801                                 return -EINVAL;
 802                         }
 803
 804                         property(name, UID_FMT, uid);
 805                         return 0;
 806                 }
 807
 808                 break;
 809
 810         case SD_BUS_TYPE_ARRAY:
 811
 812                 if (contents[1] == SD_BUS_TYPE_STRUCT_BEGIN && streq(name, "Sessions")) {
 813                         const char *s;
 814                         bool space = false;
 815
 816                         r = sd_bus_message_enter_container(m, SD_BUS_TYPE_ARRAY, "(so)");
 817                         if (r < 0)
 818                                 return bus_log_parse_error(r);
 819
 820                         if (!arg_value)
 821                                 printf("%s=", name);
 822
 823                         while ((r = sd_bus_message_read(m, "(so)", &s, NULL)) > 0) {
 824                                 printf("%s%s", space ? " " : "", s);
 825                                 space = true;
 826                         }
 827
 828                         if (space || !arg_value)
 829                                 printf("\n");
 830
 831                         if (r < 0)
 832                                 return bus_log_parse_error(r);
 833
 834                         r = sd_bus_message_exit_container(m);
 835                         if (r < 0)
 836                                 return bus_log_parse_error(r);
 837
 838                         return 0;
 839                 }
 840
 841                 break;
 842         }
 843
 844         r = bus_print_property(name, m, arg_value, arg_all);
 845         if (r < 0)
 846                 return bus_log_parse_error(r);
 847
 848         if (r == 0) {
 849                 r = sd_bus_message_skip(m, contents);
 850                 if (r < 0)
 851                         return bus_log_parse_error(r);
 852
 853                 if (arg_all)
 854                         printf("%s=[unprintable]\n", name);
 855         }
 856
 857         return 0;
 858 }
 859
 860 static int show_properties(sd_bus *bus, const char *path, bool *new_line) {
 861         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 862         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 863         int r;
 864
 865         assert(bus);
 866         assert(path);
 867         assert(new_line);
 868
 869         r = sd_bus_call_method(
 870                         bus,
 871                         "org.freedesktop.login1",
 872                         path,
 873                         "org.freedesktop.DBus.Properties",
 874                         "GetAll",
 875                         &error,
 876                         &reply,
 877                         "s", "");
 878         if (r < 0)
 879                 return log_error_errno(r, "Failed to get properties: %s", bus_error_message(&error, r));
 880
 881         r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "{sv}");
 882         if (r < 0)
 883                 return bus_log_parse_error(r);
 884
 885         if (*new_line)
 886                 printf("\n");
 887
 888         *new_line = true;
 889
 890         while ((r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_DICT_ENTRY, "sv")) > 0) {
 891                 const char *name, *contents;
 892
 893                 r = sd_bus_message_read(reply, "s", &name);
 894                 if (r < 0)
 895                         return bus_log_parse_error(r);
 896
 897                 r = sd_bus_message_peek_type(reply, NULL, &contents);
 898                 if (r < 0)
 899                         return bus_log_parse_error(r);
 900
 901                 r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_VARIANT, contents);
 902                 if (r < 0)
 903                         return bus_log_parse_error(r);
 904
 905                 r = print_property(name, reply, contents);
 906                 if (r < 0)
 907                         return r;
 908
 909                 r = sd_bus_message_exit_container(reply);
 910                 if (r < 0)
 911                         return bus_log_parse_error(r);
 912
 913                 r = sd_bus_message_exit_container(reply);
 914                 if (r < 0)
 915                         return bus_log_parse_error(r);
 916         }
 917         if (r < 0)
 918                 return bus_log_parse_error(r);
 919
 920         r = sd_bus_message_exit_container(reply);
 921         if (r < 0)
 922                 return bus_log_parse_error(r);
 923
 924         return 0;
 925 }
 926
 927 static int show_session(int argc, char *argv[], void *userdata) {
 928         bool properties, new_line = false;
 929         sd_bus *bus = userdata;
 930         int r, i;
 931         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 932         _cleanup_free_ char *path = NULL;
 933
 934         assert(bus);
 935         assert(argv);
 936
 937         properties = !strstr(argv[0], "status");
 938
 939         pager_open(arg_no_pager, false);
 940
 941         if (argc <= 1) {
 942                 const char *session, *p = "/org/freedesktop/login1/session/self";
 943
 944                 if (properties)
 945                         /* If no argument is specified inspect the manager itself */
 946                         return show_properties(bus, "/org/freedesktop/login1", &new_line);
 947
 948                 /* And in the pretty case, show data of the calling session */
 949                 session = getenv("XDG_SESSION_ID");
 950                 if (session) {
 951                         r = get_session_path(bus, session, &error, &path);
 952                         if (r < 0) {
 953                                 log_error("Failed to get session path: %s", bus_error_message(&error, r));
 954                                 return r;
 955                         }
 956                         p = path;
 957                 }
 958
 959                 return print_session_status_info(bus, p, &new_line);
 960         }
 961
 962         for (i = 1; i < argc; i++) {
 963                 r = get_session_path(bus, argv[i], &error, &path);
 964                 if (r < 0) {
 965                         log_error("Failed to get session path: %s", bus_error_message(&error, r));
 966                         return r;
 967                 }
 968
 969                 if (properties)
 970                         r = show_properties(bus, path, &new_line);
 971                 else
 972                         r = print_session_status_info(bus, path, &new_line);
 973
 974                 if (r < 0)
 975                         return r;
 976         }
 977
 978         return 0;
 979 }
 980
 981 static int show_user(int argc, char *argv[], void *userdata) {
 982         bool properties, new_line = false;
 983         sd_bus *bus = userdata;
 984         int r, i;
 985
 986         assert(bus);
 987         assert(argv);
 988
 989         properties = !strstr(argv[0], "status");
 990
 991         pager_open(arg_no_pager, false);
 992
 993         if (argc <= 1) {
 994                 /* If not argument is specified inspect the manager
 995                  * itself */
 996                 if (properties)
 997                         return show_properties(bus, "/org/freedesktop/login1", &new_line);
 998
 999                 return print_user_status_info(bus, "/org/freedesktop/login1/user/self", &new_line);
1000         }
1001
1002         for (i = 1; i < argc; i++) {
1003                 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1004                 _cleanup_(sd_bus_message_unrefp) sd_bus_message * reply = NULL;
1005                 const char *path = NULL;
1006                 uid_t uid;
1007
1008                 r = get_user_creds((const char**) (argv+i), &uid, NULL, NULL, NULL);
1009                 if (r < 0)
1010                         return log_error_errno(r, "Failed to look up user %s: %m", argv[i]);
1011
1012                 r = sd_bus_call_method(
1013                                 bus,
1014                                 "org.freedesktop.login1",
1015                                 "/org/freedesktop/login1",
1016                                 "org.freedesktop.login1.Manager",
1017                                 "GetUser",
1018                                 &error, &reply,
1019                                 "u", (uint32_t) uid);
1020                 if (r < 0) {
1021                         log_error("Failed to get user: %s", bus_error_message(&error, r));
1022                         return r;
1023                 }
1024
1025                 r = sd_bus_message_read(reply, "o", &path);
1026                 if (r < 0)
1027                         return bus_log_parse_error(r);
1028
1029                 if (properties)
1030                         r = show_properties(bus, path, &new_line);
1031                 else
1032                         r = print_user_status_info(bus, path, &new_line);
1033
1034                 if (r < 0)
1035                         return r;
1036         }
1037
1038         return 0;
1039 }
1040
1041 static int show_seat(int argc, char *argv[], void *userdata) {
1042         bool properties, new_line = false;
1043         sd_bus *bus = userdata;
1044         int r, i;
1045
1046         assert(bus);
1047         assert(argv);
1048
1049         properties = !strstr(argv[0], "status");
1050
1051         pager_open(arg_no_pager, false);
1052
1053         if (argc <= 1) {
1054                 /* If not argument is specified inspect the manager
1055                  * itself */
1056                 if (properties)
1057                         return show_properties(bus, "/org/freedesktop/login1", &new_line);
1058
1059                 return print_seat_status_info(bus, "/org/freedesktop/login1/seat/self", &new_line);
1060         }
1061
1062         for (i = 1; i < argc; i++) {
1063                 _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1064                 _cleanup_(sd_bus_message_unrefp) sd_bus_message * reply = NULL;
1065                 const char *path = NULL;
1066
1067                 r = sd_bus_call_method(
1068                                 bus,
1069                                 "org.freedesktop.login1",
1070                                 "/org/freedesktop/login1",
1071                                 "org.freedesktop.login1.Manager",
1072                                 "GetSeat",
1073                                 &error, &reply,
1074                                 "s", argv[i]);
1075                 if (r < 0) {
1076                         log_error("Failed to get seat: %s", bus_error_message(&error, r));
1077                         return r;
1078                 }
1079
1080                 r = sd_bus_message_read(reply, "o", &path);
1081                 if (r < 0)
1082                         return bus_log_parse_error(r);
1083
1084                 if (properties)
1085                         r = show_properties(bus, path, &new_line);
1086                 else
1087                         r = print_seat_status_info(bus, path, &new_line);
1088
1089                 if (r < 0)
1090                         return r;
1091         }
1092
1093         return 0;
1094 }
1095
1096 static int activate(int argc, char *argv[], void *userdata) {
1097         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1098         sd_bus *bus = userdata;
1099         char *short_argv[3];
1100         int r, i;
1101
1102         assert(bus);
1103         assert(argv);
1104
1105         polkit_agent_open_if_enabled();
1106
1107         if (argc < 2) {
1108                 /* No argument? Let's either use $XDG_SESSION_ID (if specified), or an empty
1109                  * session name, in which case logind will try to guess our session. */
1110
1111                 short_argv[0] = argv[0];
1112                 short_argv[1] = getenv("XDG_SESSION_ID") ?: (char*) "";
1113                 short_argv[2] = NULL;
1114
1115                 argv = short_argv;
1116                 argc = 2;
1117         }
1118
1119         for (i = 1; i < argc; i++) {
1120
1121                 r = sd_bus_call_method(
1122                                 bus,
1123                                 "org.freedesktop.login1",
1124                                 "/org/freedesktop/login1",
1125                                 "org.freedesktop.login1.Manager",
1126                                 streq(argv[0], "lock-session")      ? "LockSession" :
1127                                 streq(argv[0], "unlock-session")    ? "UnlockSession" :
1128                                 streq(argv[0], "terminate-session") ? "TerminateSession" :
1129                                                                       "ActivateSession",
1130                                 &error, NULL,
1131                                 "s", argv[i]);
1132                 if (r < 0) {
1133                         log_error("Failed to issue method call: %s", bus_error_message(&error, -r));
1134                         return r;
1135                 }
1136         }
1137
1138         return 0;
1139 }
1140
1141 static int kill_session(int argc, char *argv[], void *userdata) {
1142         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1143         sd_bus *bus = userdata;
1144         int r, i;
1145
1146         assert(bus);
1147         assert(argv);
1148
1149         polkit_agent_open_if_enabled();
1150
1151         if (!arg_kill_who)
1152                 arg_kill_who = "all";
1153
1154         for (i = 1; i < argc; i++) {
1155
1156                 r = sd_bus_call_method(
1157                         bus,
1158                         "org.freedesktop.login1",
1159                         "/org/freedesktop/login1",
1160                         "org.freedesktop.login1.Manager",
1161                         "KillSession",
1162                         &error, NULL,
1163                         "ssi", argv[i], arg_kill_who, arg_signal);
1164                 if (r < 0) {
1165                         log_error("Could not kill session: %s", bus_error_message(&error, -r));
1166                         return r;
1167                 }
1168         }
1169
1170         return 0;
1171 }
1172
1173 static int enable_linger(int argc, char *argv[], void *userdata) {
1174         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1175         sd_bus *bus = userdata;
1176         char* short_argv[3];
1177         bool b;
1178         int r, i;
1179
1180         assert(bus);
1181         assert(argv);
1182
1183         polkit_agent_open_if_enabled();
1184
1185         b = streq(argv[0], "enable-linger");
1186
1187         if (argc < 2) {
1188                 /* No argument? Let's either use $XDG_SESSION_ID (if specified), or an empty
1189                  * session name, in which case logind will try to guess our session. */
1190
1191                 short_argv[0] = argv[0];
1192                 short_argv[1] = getenv("XDG_SESSION_ID") ?: (char*) "";
1193                 short_argv[2] = NULL;
1194                 argv = short_argv;
1195                 argc = 2;
1196         }
1197
1198         for (i = 1; i < argc; i++) {
1199                 uid_t uid;
1200
1201                 if (isempty(argv[i]))
1202                         uid = UID_INVALID;
1203                 else {
1204                         r = get_user_creds((const char**) (argv+i), &uid, NULL, NULL, NULL);
1205                         if (r < 0)
1206                                 return log_error_errno(r, "Failed to look up user %s: %m", argv[i]);
1207                 }
1208
1209                 r = sd_bus_call_method(
1210                         bus,
1211                         "org.freedesktop.login1",
1212                         "/org/freedesktop/login1",
1213                         "org.freedesktop.login1.Manager",
1214                         "SetUserLinger",
1215                         &error, NULL,
1216                         "ubb", (uint32_t) uid, b, true);
1217                 if (r < 0) {
1218                         log_error("Could not enable linger: %s", bus_error_message(&error, -r));
1219                         return r;
1220                 }
1221         }
1222
1223         return 0;
1224 }
1225
1226 static int terminate_user(int argc, char *argv[], void *userdata) {
1227         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1228         sd_bus *bus = userdata;
1229         int r, i;
1230
1231         assert(bus);
1232         assert(argv);
1233
1234         polkit_agent_open_if_enabled();
1235
1236         for (i = 1; i < argc; i++) {
1237                 uid_t uid;
1238
1239                 r = get_user_creds((const char**) (argv+i), &uid, NULL, NULL, NULL);
1240                 if (r < 0)
1241                         return log_error_errno(r, "Failed to look up user %s: %m", argv[i]);
1242
1243                 r = sd_bus_call_method(
1244                         bus,
1245                         "org.freedesktop.login1",
1246                         "/org/freedesktop/login1",
1247                         "org.freedesktop.login1.Manager",
1248                         "TerminateUser",
1249                         &error, NULL,
1250                         "u", (uint32_t) uid);
1251                 if (r < 0) {
1252                         log_error("Could not terminate user: %s", bus_error_message(&error, -r));
1253                         return r;
1254                 }
1255         }
1256
1257         return 0;
1258 }
1259
1260 static int kill_user(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, i;
1264
1265         assert(bus);
1266         assert(argv);
1267
1268         polkit_agent_open_if_enabled();
1269
1270         if (!arg_kill_who)
1271                 arg_kill_who = "all";
1272
1273         for (i = 1; i < argc; i++) {
1274                 uid_t uid;
1275
1276                 r = get_user_creds((const char**) (argv+i), &uid, NULL, NULL, NULL);
1277                 if (r < 0)
1278                         return log_error_errno(r, "Failed to look up user %s: %m", argv[i]);
1279
1280                 r = sd_bus_call_method(
1281                         bus,
1282                         "org.freedesktop.login1",
1283                         "/org/freedesktop/login1",
1284                         "org.freedesktop.login1.Manager",
1285                         "KillUser",
1286                         &error, NULL,
1287                         "ui", (uint32_t) uid, arg_signal);
1288                 if (r < 0) {
1289                         log_error("Could not kill user: %s", bus_error_message(&error, -r));
1290                         return r;
1291                 }
1292         }
1293
1294         return 0;
1295 }
1296
1297 static int attach(int argc, char *argv[], void *userdata) {
1298         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1299         sd_bus *bus = userdata;
1300         int r, i;
1301
1302         assert(bus);
1303         assert(argv);
1304
1305         polkit_agent_open_if_enabled();
1306
1307         for (i = 2; i < argc; i++) {
1308
1309                 r = sd_bus_call_method(
1310                         bus,
1311                         "org.freedesktop.login1",
1312                         "/org/freedesktop/login1",
1313                         "org.freedesktop.login1.Manager",
1314                         "AttachDevice",
1315                         &error, NULL,
1316                         "ssb", argv[1], argv[i], true);
1317
1318                 if (r < 0) {
1319                         log_error("Could not attach device: %s", bus_error_message(&error, -r));
1320                         return r;
1321                 }
1322         }
1323
1324         return 0;
1325 }
1326
1327 static int flush_devices(int argc, char *argv[], void *userdata) {
1328         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1329         sd_bus *bus = userdata;
1330         int r;
1331
1332         assert(bus);
1333         assert(argv);
1334
1335         polkit_agent_open_if_enabled();
1336
1337         r = sd_bus_call_method(
1338                         bus,
1339                         "org.freedesktop.login1",
1340                         "/org/freedesktop/login1",
1341                         "org.freedesktop.login1.Manager",
1342                         "FlushDevices",
1343                         &error, NULL,
1344                         "b", true);
1345         if (r < 0)
1346                 log_error("Could not flush devices: %s", bus_error_message(&error, -r));
1347
1348         return r;
1349 }
1350
1351 static int lock_sessions(int argc, char *argv[], void *userdata) {
1352         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1353         sd_bus *bus = userdata;
1354         int r;
1355
1356         assert(bus);
1357         assert(argv);
1358
1359         polkit_agent_open_if_enabled();
1360
1361         r = sd_bus_call_method(
1362                         bus,
1363                         "org.freedesktop.login1",
1364                         "/org/freedesktop/login1",
1365                         "org.freedesktop.login1.Manager",
1366                         streq(argv[0], "lock-sessions") ? "LockSessions" : "UnlockSessions",
1367                         &error, NULL,
1368                         NULL);
1369         if (r < 0)
1370                 log_error("Could not lock sessions: %s", bus_error_message(&error, -r));
1371
1372         return r;
1373 }
1374
1375 static int terminate_seat(int argc, char *argv[], void *userdata) {
1376         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1377         sd_bus *bus = userdata;
1378         int r, i;
1379
1380         assert(bus);
1381         assert(argv);
1382
1383         polkit_agent_open_if_enabled();
1384
1385         for (i = 1; i < argc; i++) {
1386
1387                 r = sd_bus_call_method(
1388                         bus,
1389                         "org.freedesktop.login1",
1390                         "/org/freedesktop/login1",
1391                         "org.freedesktop.login1.Manager",
1392                         "TerminateSeat",
1393                         &error, NULL,
1394                         "s", argv[i]);
1395                 if (r < 0) {
1396                         log_error("Could not terminate seat: %s", bus_error_message(&error, -r));
1397                         return r;
1398                 }
1399         }
1400
1401         return 0;
1402 }
1403
1404 static int help(int argc, char *argv[], void *userdata) {
1405
1406         printf("%s [OPTIONS...] {COMMAND} ...\n\n"
1407                "Send control commands to or query the login manager.\n\n"
1408                "  -h --help                Show this help\n"
1409                "     --version             Show package version\n"
1410                "     --no-pager            Do not pipe output into a pager\n"
1411 #if 1 /// elogind supports --no-wall
1412                "     --no-wall             Do not print any wall message\n"
1413 #endif // 1
1414                "     --no-legend           Do not show the headers and footers\n"
1415                "     --no-ask-password     Don't prompt for password\n"
1416                "  -H --host=[USER@]HOST    Operate on remote host\n"
1417                "  -M --machine=CONTAINER   Operate on local container\n"
1418                "  -p --property=NAME       Show only properties by this name\n"
1419                "  -a --all                 Show all properties, including empty ones\n"
1420                "     --value               When showing properties, only print the value\n"
1421                "  -l --full                Do not ellipsize output\n"
1422                "     --kill-who=WHO        Who to send signal to\n"
1423                "  -s --signal=SIGNAL       Which signal to send\n"
1424 #if 0 /// UNNEEDED by elogind
1425                "  -n --lines=INTEGER       Number of journal entries to show\n"
1426                "  -o --output=STRING       Change journal output mode (short, short-precise,\n"
1427                "                             short-iso, short-iso-precise, short-full,\n"
1428                "                             short-monotonic, short-unix, verbose, export,\n"
1429                "                             json, json-pretty, json-sse, cat)\n"
1430 #else
1431                 /// elogind can cancel shutdowns and allows to ignore inhibitors
1432                "  -c                       Cancel a pending shutdown or reboot\n"
1433                "  -i --ignore-inhibitors   When shutting down or sleeping, ignore inhibitors\n\n"
1434 #endif // 0
1435                "Session Commands:\n"
1436 #if 1 /// elogind has "list" as a shorthand for "list-sessions"
1437                "  list[-sessions]          List sessions (default command)\n"
1438 #endif // 1
1439                "  session-status [ID...]   Show session status\n"
1440                "  show-session [ID...]     Show properties of sessions or the manager\n"
1441                "  activate [ID]            Activate a session\n"
1442                "  lock-session [ID...]     Screen lock one or more sessions\n"
1443                "  unlock-session [ID...]   Screen unlock one or more sessions\n"
1444                "  lock-sessions            Screen lock all current sessions\n"
1445                "  unlock-sessions          Screen unlock all current sessions\n"
1446                "  terminate-session ID...  Terminate one or more sessions\n"
1447                "  kill-session ID...       Send signal to processes of a session\n\n"
1448                "User Commands:\n"
1449                "  list-users               List users\n"
1450                "  user-status [USER...]    Show user status\n"
1451                "  show-user [USER...]      Show properties of users or the manager\n"
1452                "  enable-linger [USER...]  Enable linger state of one or more users\n"
1453                "  disable-linger [USER...] Disable linger state of one or more users\n"
1454                "  terminate-user USER...   Terminate all sessions of one or more users\n"
1455                "  kill-user USER...        Send signal to processes of a user\n\n"
1456                "Seat Commands:\n"
1457                "  list-seats               List seats\n"
1458                "  seat-status [NAME...]    Show seat status\n"
1459                "  show-seat [NAME...]      Show properties of seats or the manager\n"
1460                "  attach NAME DEVICE...    Attach one or more devices to a seat\n"
1461                "  flush-devices            Flush all device associations\n"
1462                "  terminate-seat NAME...   Terminate all sessions on one or more seats\n\n"
1463 #if 1 /// elogind adds some system commands to loginctl
1464                "System Commands:\n"
1465                "  poweroff [TIME] [WALL...] Turn off the machine\n"
1466                "  reboot   [TIME] [WALL...] Reboot the machine\n"
1467                "  suspend                   Suspend the machine to memory\n"
1468                "  hibernate                 Suspend the machine to disk\n"
1469                "  hybrid-sleep              Suspend the machine to memory and disk\n"
1470 #endif // 1
1471                , program_invocation_short_name);
1472
1473         return 0;
1474 }
1475
1476 static int parse_argv(int argc, char *argv[]) {
1477
1478         enum {
1479                 ARG_VERSION = 0x100,
1480                 ARG_VALUE,
1481                 ARG_NO_PAGER,
1482 #if 1 /// elogind supports --no-wall
1483                 ARG_NO_WALL,
1484 #endif // 1
1485                 ARG_NO_LEGEND,
1486                 ARG_KILL_WHO,
1487                 ARG_NO_ASK_PASSWORD,
1488         };
1489
1490         static const struct option options[] = {
1491                 { "help",            no_argument,       NULL, 'h'                 },
1492                 { "version",         no_argument,       NULL, ARG_VERSION         },
1493                 { "property",        required_argument, NULL, 'p'                 },
1494                 { "all",             no_argument,       NULL, 'a'                 },
1495                 { "value",           no_argument,       NULL, ARG_VALUE           },
1496                 { "full",            no_argument,       NULL, 'l'                 },
1497                 { "no-pager",        no_argument,       NULL, ARG_NO_PAGER        },
1498 #if 1 /// elogind supports --no-wall
1499                 { "no-wall",         no_argument,       NULL, ARG_NO_WALL         },
1500 #endif // 1
1501                 { "no-legend",       no_argument,       NULL, ARG_NO_LEGEND       },
1502                 { "kill-who",        required_argument, NULL, ARG_KILL_WHO        },
1503                 { "signal",          required_argument, NULL, 's'                 },
1504                 { "host",            required_argument, NULL, 'H'                 },
1505                 { "machine",         required_argument, NULL, 'M'                 },
1506                 { "no-ask-password", no_argument,       NULL, ARG_NO_ASK_PASSWORD },
1507 #if 0 /// UNNEEDED by elogind
1508                 { "lines",           required_argument, NULL, 'n'                 },
1509                 { "output",          required_argument, NULL, 'o'                 },
1510 #else
1511                 /// elogind allows to ignore inhibitors for system commands.
1512                 { "ignore-inhibitors", no_argument,     NULL, 'i'                 },
1513 #endif // 0
1514                 {}
1515         };
1516
1517         int c, r;
1518
1519         assert(argc >= 0);
1520         assert(argv);
1521
1522 #if 0 /// elogind adds some system commands to loginctl
1523         while ((c = getopt_long(argc, argv, "hp:als:H:M:n:o:", options, NULL)) >= 0)
1524 #else
1525         while ((c = getopt_long(argc, argv, "hp:als:H:M:n:o:ci", options, NULL)) >= 0)
1526 #endif // 0
1527
1528                 switch (c) {
1529
1530                 case 'h':
1531                         help(0, NULL, NULL);
1532                         return 0;
1533
1534                 case ARG_VERSION:
1535                         return version();
1536
1537                 case 'p': {
1538                         r = strv_extend(&arg_property, optarg);
1539                         if (r < 0)
1540                                 return log_oom();
1541
1542                         /* If the user asked for a particular
1543                          * property, show it to him, even if it is
1544                          * empty. */
1545                         arg_all = true;
1546                         break;
1547                 }
1548
1549                 case 'a':
1550                         arg_all = true;
1551                         break;
1552
1553                 case ARG_VALUE:
1554                         arg_value = true;
1555                         break;
1556
1557                 case 'l':
1558                         arg_full = true;
1559                         break;
1560
1561 #if 0 /// UNNEEDED by elogind
1562                 case 'n':
1563                         if (safe_atou(optarg, &arg_lines) < 0) {
1564                                 log_error("Failed to parse lines '%s'", optarg);
1565                                 return -EINVAL;
1566                         }
1567                         break;
1568
1569                 case 'o':
1570                         arg_output = output_mode_from_string(optarg);
1571                         if (arg_output < 0) {
1572                                 log_error("Unknown output '%s'.", optarg);
1573                                 return -EINVAL;
1574                         }
1575                         break;
1576 #endif // 0
1577
1578                 case ARG_NO_PAGER:
1579                         arg_no_pager = true;
1580                         break;
1581 #if 1 /// elogind supports --no-wall
1582                 case ARG_NO_WALL:
1583                         arg_no_wall = true;
1584                         break;
1585 #endif // 1
1586
1587                 case ARG_NO_LEGEND:
1588                         arg_legend = false;
1589                         break;
1590
1591                 case ARG_NO_ASK_PASSWORD:
1592                         arg_ask_password = false;
1593                         break;
1594
1595                 case ARG_KILL_WHO:
1596                         arg_kill_who = optarg;
1597                         break;
1598
1599                 case 's':
1600                         arg_signal = signal_from_string_try_harder(optarg);
1601                         if (arg_signal < 0) {
1602                                 log_error("Failed to parse signal string %s.", optarg);
1603                                 return -EINVAL;
1604                         }
1605                         break;
1606
1607                 case 'H':
1608                         arg_transport = BUS_TRANSPORT_REMOTE;
1609                         arg_host = optarg;
1610                         break;
1611
1612                 case 'M':
1613                         arg_transport = BUS_TRANSPORT_MACHINE;
1614                         arg_host = optarg;
1615                         break;
1616 #if 1 /// elogind can cancel shutdowns and allows to ignore inhibitors
1617                 case 'c':
1618                         arg_action = ACTION_CANCEL_SHUTDOWN;
1619                         break;
1620
1621                 case 'i':
1622                         arg_ignore_inhibitors = true;
1623                         break;
1624 #endif // 1
1625                 case '?':
1626                         return -EINVAL;
1627
1628                 default:
1629                         assert_not_reached("Unhandled option");
1630                 }
1631
1632         return 1;
1633 }
1634
1635 static int loginctl_main(int argc, char *argv[], sd_bus *bus) {
1636
1637         static const Verb verbs[] = {
1638                 { "help",              VERB_ANY, VERB_ANY, 0,            help              },
1639 #if 0 /// elogind has "list" as a shorthand for "list-sessions"
1640                 { "list-sessions",     VERB_ANY, 1,        VERB_DEFAULT, list_sessions     },
1641 #else
1642                 { "list",              VERB_ANY, 1,        VERB_DEFAULT, list_sessions     },
1643                 { "list-sessions",     VERB_ANY, 1,        0,            list_sessions     },
1644 #endif // 0
1645                 { "session-status",    VERB_ANY, VERB_ANY, 0,            show_session      },
1646                 { "show-session",      VERB_ANY, VERB_ANY, 0,            show_session      },
1647                 { "activate",          VERB_ANY, 2,        0,            activate          },
1648                 { "lock-session",      VERB_ANY, VERB_ANY, 0,            activate          },
1649                 { "unlock-session",    VERB_ANY, VERB_ANY, 0,            activate          },
1650                 { "lock-sessions",     VERB_ANY, 1,        0,            lock_sessions     },
1651                 { "unlock-sessions",   VERB_ANY, 1,        0,            lock_sessions     },
1652                 { "terminate-session", 2,        VERB_ANY, 0,            activate          },
1653                 { "kill-session",      2,        VERB_ANY, 0,            kill_session      },
1654                 { "list-users",        VERB_ANY, 1,        0,            list_users        },
1655                 { "user-status",       VERB_ANY, VERB_ANY, 0,            show_user         },
1656                 { "show-user",         VERB_ANY, VERB_ANY, 0,            show_user         },
1657                 { "enable-linger",     VERB_ANY, VERB_ANY, 0,            enable_linger     },
1658                 { "disable-linger",    VERB_ANY, VERB_ANY, 0,            enable_linger     },
1659                 { "terminate-user",    2,        VERB_ANY, 0,            terminate_user    },
1660                 { "kill-user",         2,        VERB_ANY, 0,            kill_user         },
1661                 { "list-seats",        VERB_ANY, 1,        0,            list_seats        },
1662                 { "seat-status",       VERB_ANY, VERB_ANY, 0,            show_seat         },
1663                 { "show-seat",         VERB_ANY, VERB_ANY, 0,            show_seat         },
1664                 { "attach",            3,        VERB_ANY, 0,            attach            },
1665                 { "flush-devices",     VERB_ANY, 1,        0,            flush_devices     },
1666                 { "terminate-seat",    2,        VERB_ANY, 0,            terminate_seat    },
1667 #if 1 /// elogind adds some system commands to loginctl
1668                 { "poweroff",          VERB_ANY, VERB_ANY, 0,            start_special     },
1669                 { "reboot",            VERB_ANY, VERB_ANY, 0,            start_special     },
1670                 { "suspend",           VERB_ANY, 1,        0,            start_special     },
1671                 { "hibernate",         VERB_ANY, 1,        0,            start_special     },
1672                 { "hybrid-sleep",      VERB_ANY, 1,        0,            start_special     },
1673                 { "cancel-shutdown",   VERB_ANY, 1,        0,            start_special     },
1674 #endif // 1
1675                 {}
1676         };
1677
1678 #if 1 /// elogind can do shutdown and allows its cancellation
1679         if ((argc == optind) && (ACTION_CANCEL_SHUTDOWN == arg_action))
1680                 return elogind_cancel_shutdown(bus);
1681 #endif // 1
1682         return dispatch_verb(argc, argv, verbs, bus);
1683 }
1684
1685 int main(int argc, char *argv[]) {
1686         sd_bus *bus = NULL;
1687         int r;
1688
1689         setlocale(LC_ALL, "");
1690         elogind_set_program_name(argv[0]);
1691         log_parse_environment();
1692         log_open();
1693
1694         r = parse_argv(argc, argv);
1695         if (r <= 0)
1696                 goto finish;
1697
1698         r = bus_connect_transport(arg_transport, arg_host, false, &bus);
1699         if (r < 0) {
1700                 log_error_errno(r, "Failed to create bus connection: %m");
1701                 goto finish;
1702         }
1703
1704         sd_bus_set_allow_interactive_authorization(bus, arg_ask_password);
1705
1706         r = loginctl_main(argc, argv, bus);
1707
1708 finish:
1709         sd_bus_flush_close_unref(bus);
1710
1711         pager_close();
1712 #if 0 /// elogind does that in elogind_cleanup()
1713         polkit_agent_close();
1714 #endif // 0
1715
1716         strv_free(arg_property);
1717
1718 #if 1 /// elogind has some own cleanups to do
1719         elogind_cleanup();
1720 #endif // 1
1721         return r < 0 ? EXIT_FAILURE : EXIT_SUCCESS;
1722 }