src/login/logind-dbus.c

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2
   3 #include <errno.h>
   4 #include <sys/stat.h>
   5 #include <unistd.h>
   6
   7 #include "sd-device.h"
   8 #include "sd-messages.h"
   9
  10 #include "alloc-util.h"
  11 #include "audit-util.h"
  12 #include "bootspec.h"
  13 #include "bus-common-errors.h"
  14 #include "bus-error.h"
  15 #include "bus-get-properties.h"
  16 #include "bus-locator.h"
  17 #include "bus-polkit.h"
  18 #include "bus-unit-util.h"
  19 #include "bus-util.h"
  20 #include "cgroup-util.h"
  21 #include "device-util.h"
  22 #include "dirent-util.h"
  23 #include "efi-loader.h"
  24 #include "efivars.h"
  25 #include "env-util.h"
  26 #include "escape.h"
  27 #include "fd-util.h"
  28 #include "fileio-label.h"
  29 #include "fileio.h"
  30 #include "format-util.h"
  31 #include "fs-util.h"
  32 #include "logind-dbus.h"
  33 #include "logind-polkit.h"
  34 #include "logind-seat-dbus.h"
  35 #include "logind-session-dbus.h"
  36 #include "logind-user-dbus.h"
  37 #include "logind.h"
  38 #include "missing_capability.h"
  39 #include "mkdir.h"
  40 #include "parse-util.h"
  41 #include "path-util.h"
  42 #include "process-util.h"
  43 #include "reboot-util.h"
  44 #include "selinux-util.h"
  45 #include "sleep-config.h"
  46 #include "special.h"
  47 #include "stdio-util.h"
  48 #include "strv.h"
  49 #include "terminal-util.h"
  50 #include "tmpfile-util.h"
  51 #include "unit-name.h"
  52 #include "user-util.h"
  53 #include "utmp-wtmp.h"
  54 #include "virt.h"
  55
  56 static int get_sender_session(
  57                 Manager *m,
  58                 sd_bus_message *message,
  59                 bool consult_display,
  60                 sd_bus_error *error,
  61                 Session **ret) {
  62
  63         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
  64         Session *session = NULL;
  65         const char *name;
  66         int r;
  67
  68         /* Acquire the sender's session. This first checks if the sending process is inside a session itself,
  69          * and returns that. If not and 'consult_display' is true, this returns the display session of the
  70          * owning user of the caller. */
  71
  72         r = sd_bus_query_sender_creds(message,
  73                                       SD_BUS_CREDS_SESSION|SD_BUS_CREDS_AUGMENT|
  74                                       (consult_display ? SD_BUS_CREDS_OWNER_UID : 0), &creds);
  75         if (r < 0)
  76                 return r;
  77
  78         r = sd_bus_creds_get_session(creds, &name);
  79         if (r < 0) {
  80                 if (r != -ENXIO)
  81                         return r;
  82
  83                 if (consult_display) {
  84                         uid_t uid;
  85
  86                         r = sd_bus_creds_get_owner_uid(creds, &uid);
  87                         if (r < 0) {
  88                                 if (r != -ENXIO)
  89                                         return r;
  90                         } else {
  91                                 User *user;
  92
  93                                 user = hashmap_get(m->users, UID_TO_PTR(uid));
  94                                 if (user)
  95                                         session = user->display;
  96                         }
  97                 }
  98         } else
  99                 session = hashmap_get(m->sessions, name);
 100
 101         if (!session)
 102                 return sd_bus_error_setf(error, BUS_ERROR_NO_SESSION_FOR_PID,
 103                                          consult_display ?
 104                                          "Caller does not belong to any known session and doesn't own any suitable session." :
 105                                          "Caller does not belong to any known session.");
 106
 107         *ret = session;
 108         return 0;
 109 }
 110
 111 int manager_get_session_from_creds(
 112                 Manager *m,
 113                 sd_bus_message *message,
 114                 const char *name,
 115                 sd_bus_error *error,
 116                 Session **ret) {
 117
 118         Session *session;
 119
 120         assert(m);
 121         assert(ret);
 122
 123         if (SEAT_IS_SELF(name)) /* the caller's own session */
 124                 return get_sender_session(m, message, false, error, ret);
 125         if (SEAT_IS_AUTO(name)) /* The caller's own session if they have one, otherwise their user's display session */
 126                 return get_sender_session(m, message, true, error, ret);
 127
 128         session = hashmap_get(m->sessions, name);
 129         if (!session)
 130                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SESSION, "No session '%s' known", name);
 131
 132         *ret = session;
 133         return 0;
 134 }
 135
 136 static int get_sender_user(Manager *m, sd_bus_message *message, sd_bus_error *error, User **ret) {
 137         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 138         uid_t uid;
 139         User *user;
 140         int r;
 141
 142         /* Note that we get the owner UID of the session, not the actual client UID here! */
 143         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds);
 144         if (r < 0)
 145                 return r;
 146
 147         r = sd_bus_creds_get_owner_uid(creds, &uid);
 148         if (r < 0) {
 149                 if (r != -ENXIO)
 150                         return r;
 151
 152                 user = NULL;
 153         } else
 154                 user = hashmap_get(m->users, UID_TO_PTR(uid));
 155
 156         if (!user)
 157                 return sd_bus_error_setf(error, BUS_ERROR_NO_USER_FOR_PID,
 158                                          "Caller does not belong to any logged in or lingering user");
 159
 160         *ret = user;
 161         return 0;
 162 }
 163
 164 int manager_get_user_from_creds(Manager *m, sd_bus_message *message, uid_t uid, sd_bus_error *error, User **ret) {
 165         User *user;
 166
 167         assert(m);
 168         assert(ret);
 169
 170         if (!uid_is_valid(uid))
 171                 return get_sender_user(m, message, error, ret);
 172
 173         user = hashmap_get(m->users, UID_TO_PTR(uid));
 174         if (!user)
 175                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_USER,
 176                                          "User ID "UID_FMT" is not logged in or lingering", uid);
 177
 178         *ret = user;
 179         return 0;
 180 }
 181
 182 int manager_get_seat_from_creds(
 183                 Manager *m,
 184                 sd_bus_message *message,
 185                 const char *name,
 186                 sd_bus_error *error,
 187                 Seat **ret) {
 188
 189         Seat *seat;
 190         int r;
 191
 192         assert(m);
 193         assert(ret);
 194
 195         if (SEAT_IS_SELF(name) || SEAT_IS_AUTO(name)) {
 196                 Session *session;
 197
 198                 /* Use these special seat names as session names */
 199                 r = manager_get_session_from_creds(m, message, name, error, &session);
 200                 if (r < 0)
 201                         return r;
 202
 203                 seat = session->seat;
 204                 if (!seat)
 205                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "Session '%s' has no seat.", session->id);
 206         } else {
 207                 seat = hashmap_get(m->seats, name);
 208                 if (!seat)
 209                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "No seat '%s' known", name);
 210         }
 211
 212         *ret = seat;
 213         return 0;
 214 }
 215
 216 static int return_test_polkit(
 217                 sd_bus_message *message,
 218                 int capability,
 219                 const char *action,
 220                 const char **details,
 221                 uid_t good_user,
 222                 sd_bus_error *e) {
 223
 224         const char *result;
 225         bool challenge;
 226         int r;
 227
 228         r = bus_test_polkit(message, capability, action, details, good_user, &challenge, e);
 229         if (r < 0)
 230                 return r;
 231
 232         if (r > 0)
 233                 result = "yes";
 234         else if (challenge)
 235                 result = "challenge";
 236         else
 237                 result = "no";
 238
 239         return sd_bus_reply_method_return(message, "s", result);
 240 }
 241
 242 static int property_get_idle_hint(
 243                 sd_bus *bus,
 244                 const char *path,
 245                 const char *interface,
 246                 const char *property,
 247                 sd_bus_message *reply,
 248                 void *userdata,
 249                 sd_bus_error *error) {
 250
 251         Manager *m = userdata;
 252
 253         assert(bus);
 254         assert(reply);
 255         assert(m);
 256
 257         return sd_bus_message_append(reply, "b", manager_get_idle_hint(m, NULL) > 0);
 258 }
 259
 260 static int property_get_idle_since_hint(
 261                 sd_bus *bus,
 262                 const char *path,
 263                 const char *interface,
 264                 const char *property,
 265                 sd_bus_message *reply,
 266                 void *userdata,
 267                 sd_bus_error *error) {
 268
 269         Manager *m = userdata;
 270         dual_timestamp t = DUAL_TIMESTAMP_NULL;
 271
 272         assert(bus);
 273         assert(reply);
 274         assert(m);
 275
 276         manager_get_idle_hint(m, &t);
 277
 278         return sd_bus_message_append(reply, "t", streq(property, "IdleSinceHint") ? t.realtime : t.monotonic);
 279 }
 280
 281 static int property_get_inhibited(
 282                 sd_bus *bus,
 283                 const char *path,
 284                 const char *interface,
 285                 const char *property,
 286                 sd_bus_message *reply,
 287                 void *userdata,
 288                 sd_bus_error *error) {
 289
 290         Manager *m = userdata;
 291         InhibitWhat w;
 292
 293         assert(bus);
 294         assert(reply);
 295         assert(m);
 296
 297         w = manager_inhibit_what(m, streq(property, "BlockInhibited") ? INHIBIT_BLOCK : INHIBIT_DELAY);
 298
 299         return sd_bus_message_append(reply, "s", inhibit_what_to_string(w));
 300 }
 301
 302 static int property_get_preparing(
 303                 sd_bus *bus,
 304                 const char *path,
 305                 const char *interface,
 306                 const char *property,
 307                 sd_bus_message *reply,
 308                 void *userdata,
 309                 sd_bus_error *error) {
 310
 311         Manager *m = userdata;
 312         bool b;
 313
 314         assert(bus);
 315         assert(reply);
 316         assert(m);
 317
 318         if (streq(property, "PreparingForShutdown"))
 319                 b = m->action_what & INHIBIT_SHUTDOWN;
 320         else
 321                 b = m->action_what & INHIBIT_SLEEP;
 322
 323         return sd_bus_message_append(reply, "b", b);
 324 }
 325
 326 static int property_get_scheduled_shutdown(
 327                 sd_bus *bus,
 328                 const char *path,
 329                 const char *interface,
 330                 const char *property,
 331                 sd_bus_message *reply,
 332                 void *userdata,
 333                 sd_bus_error *error) {
 334
 335         Manager *m = userdata;
 336         int r;
 337
 338         assert(bus);
 339         assert(reply);
 340         assert(m);
 341
 342         r = sd_bus_message_open_container(reply, 'r', "st");
 343         if (r < 0)
 344                 return r;
 345
 346         r = sd_bus_message_append(reply, "st", m->scheduled_shutdown_type, m->scheduled_shutdown_timeout);
 347         if (r < 0)
 348                 return r;
 349
 350         return sd_bus_message_close_container(reply);
 351 }
 352
 353 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_handle_action, handle_action, HandleAction);
 354 static BUS_DEFINE_PROPERTY_GET(property_get_docked, "b", Manager, manager_is_docked_or_external_displays);
 355 static BUS_DEFINE_PROPERTY_GET(property_get_lid_closed, "b", Manager, manager_is_lid_closed);
 356 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_on_external_power, "b", manager_is_on_external_power);
 357 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_compat_user_tasks_max, "t", CGROUP_LIMIT_MAX);
 358 static BUS_DEFINE_PROPERTY_GET_REF(property_get_hashmap_size, "t", Hashmap *, (uint64_t) hashmap_size);
 359
 360 static int method_get_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 361         _cleanup_free_ char *p = NULL;
 362         Manager *m = userdata;
 363         const char *name;
 364         Session *session;
 365         int r;
 366
 367         assert(message);
 368         assert(m);
 369
 370         r = sd_bus_message_read(message, "s", &name);
 371         if (r < 0)
 372                 return r;
 373
 374         r = manager_get_session_from_creds(m, message, name, error, &session);
 375         if (r < 0)
 376                 return r;
 377
 378         p = session_bus_path(session);
 379         if (!p)
 380                 return -ENOMEM;
 381
 382         return sd_bus_reply_method_return(message, "o", p);
 383 }
 384
 385 /* Get login session of a process.  This is not what you are looking for these days,
 386  * as apps may instead belong to a user service unit.  This includes terminal
 387  * emulators and hence command-line apps. */
 388 static int method_get_session_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 389         _cleanup_free_ char *p = NULL;
 390         Session *session = NULL;
 391         Manager *m = userdata;
 392         pid_t pid;
 393         int r;
 394
 395         assert(message);
 396         assert(m);
 397
 398         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 399
 400         r = sd_bus_message_read(message, "u", &pid);
 401         if (r < 0)
 402                 return r;
 403         if (pid < 0)
 404                 return -EINVAL;
 405
 406         if (pid == 0) {
 407                 r = manager_get_session_from_creds(m, message, NULL, error, &session);
 408                 if (r < 0)
 409                         return r;
 410         } else {
 411                 r = manager_get_session_by_pid(m, pid, &session);
 412                 if (r < 0)
 413                         return r;
 414
 415                 if (!session)
 416                         return sd_bus_error_setf(error, BUS_ERROR_NO_SESSION_FOR_PID,
 417                                                  "PID "PID_FMT" does not belong to any known session", pid);
 418         }
 419
 420         p = session_bus_path(session);
 421         if (!p)
 422                 return -ENOMEM;
 423
 424         return sd_bus_reply_method_return(message, "o", p);
 425 }
 426
 427 static int method_get_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 428         _cleanup_free_ char *p = NULL;
 429         Manager *m = userdata;
 430         uint32_t uid;
 431         User *user;
 432         int r;
 433
 434         assert(message);
 435         assert(m);
 436
 437         r = sd_bus_message_read(message, "u", &uid);
 438         if (r < 0)
 439                 return r;
 440
 441         r = manager_get_user_from_creds(m, message, uid, error, &user);
 442         if (r < 0)
 443                 return r;
 444
 445         p = user_bus_path(user);
 446         if (!p)
 447                 return -ENOMEM;
 448
 449         return sd_bus_reply_method_return(message, "o", p);
 450 }
 451
 452 static int method_get_user_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 453         _cleanup_free_ char *p = NULL;
 454         Manager *m = userdata;
 455         User *user = NULL;
 456         pid_t pid;
 457         int r;
 458
 459         assert(message);
 460         assert(m);
 461
 462         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 463
 464         r = sd_bus_message_read(message, "u", &pid);
 465         if (r < 0)
 466                 return r;
 467         if (pid < 0)
 468                 return -EINVAL;
 469
 470         if (pid == 0) {
 471                 r = manager_get_user_from_creds(m, message, UID_INVALID, error, &user);
 472                 if (r < 0)
 473                         return r;
 474         } else {
 475                 r = manager_get_user_by_pid(m, pid, &user);
 476                 if (r < 0)
 477                         return r;
 478                 if (!user)
 479                         return sd_bus_error_setf(error, BUS_ERROR_NO_USER_FOR_PID,
 480                                                  "PID "PID_FMT" does not belong to any logged in user or lingering user",
 481                                                  pid);
 482         }
 483
 484         p = user_bus_path(user);
 485         if (!p)
 486                 return -ENOMEM;
 487
 488         return sd_bus_reply_method_return(message, "o", p);
 489 }
 490
 491 static int method_get_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 492         _cleanup_free_ char *p = NULL;
 493         Manager *m = userdata;
 494         const char *name;
 495         Seat *seat;
 496         int r;
 497
 498         assert(message);
 499         assert(m);
 500
 501         r = sd_bus_message_read(message, "s", &name);
 502         if (r < 0)
 503                 return r;
 504
 505         r = manager_get_seat_from_creds(m, message, name, error, &seat);
 506         if (r < 0)
 507                 return r;
 508
 509         p = seat_bus_path(seat);
 510         if (!p)
 511                 return -ENOMEM;
 512
 513         return sd_bus_reply_method_return(message, "o", p);
 514 }
 515
 516 static int method_list_sessions(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 517         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 518         Manager *m = userdata;
 519         Session *session;
 520         int r;
 521
 522         assert(message);
 523         assert(m);
 524
 525         r = sd_bus_message_new_method_return(message, &reply);
 526         if (r < 0)
 527                 return r;
 528
 529         r = sd_bus_message_open_container(reply, 'a', "(susso)");
 530         if (r < 0)
 531                 return r;
 532
 533         HASHMAP_FOREACH(session, m->sessions) {
 534                 _cleanup_free_ char *p = NULL;
 535
 536                 p = session_bus_path(session);
 537                 if (!p)
 538                         return -ENOMEM;
 539
 540                 r = sd_bus_message_append(reply, "(susso)",
 541                                           session->id,
 542                                           (uint32_t) session->user->user_record->uid,
 543                                           session->user->user_record->user_name,
 544                                           session->seat ? session->seat->id : "",
 545                                           p);
 546                 if (r < 0)
 547                         return r;
 548         }
 549
 550         r = sd_bus_message_close_container(reply);
 551         if (r < 0)
 552                 return r;
 553
 554         return sd_bus_send(NULL, reply, NULL);
 555 }
 556
 557 static int method_list_users(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 558         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 559         Manager *m = userdata;
 560         User *user;
 561         int r;
 562
 563         assert(message);
 564         assert(m);
 565
 566         r = sd_bus_message_new_method_return(message, &reply);
 567         if (r < 0)
 568                 return r;
 569
 570         r = sd_bus_message_open_container(reply, 'a', "(uso)");
 571         if (r < 0)
 572                 return r;
 573
 574         HASHMAP_FOREACH(user, m->users) {
 575                 _cleanup_free_ char *p = NULL;
 576
 577                 p = user_bus_path(user);
 578                 if (!p)
 579                         return -ENOMEM;
 580
 581                 r = sd_bus_message_append(reply, "(uso)",
 582                                           (uint32_t) user->user_record->uid,
 583                                           user->user_record->user_name,
 584                                           p);
 585                 if (r < 0)
 586                         return r;
 587         }
 588
 589         r = sd_bus_message_close_container(reply);
 590         if (r < 0)
 591                 return r;
 592
 593         return sd_bus_send(NULL, reply, NULL);
 594 }
 595
 596 static int method_list_seats(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 597         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 598         Manager *m = userdata;
 599         Seat *seat;
 600         int r;
 601
 602         assert(message);
 603         assert(m);
 604
 605         r = sd_bus_message_new_method_return(message, &reply);
 606         if (r < 0)
 607                 return r;
 608
 609         r = sd_bus_message_open_container(reply, 'a', "(so)");
 610         if (r < 0)
 611                 return r;
 612
 613         HASHMAP_FOREACH(seat, m->seats) {
 614                 _cleanup_free_ char *p = NULL;
 615
 616                 p = seat_bus_path(seat);
 617                 if (!p)
 618                         return -ENOMEM;
 619
 620                 r = sd_bus_message_append(reply, "(so)", seat->id, p);
 621                 if (r < 0)
 622                         return r;
 623         }
 624
 625         r = sd_bus_message_close_container(reply);
 626         if (r < 0)
 627                 return r;
 628
 629         return sd_bus_send(NULL, reply, NULL);
 630 }
 631
 632 static int method_list_inhibitors(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 633         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 634         Manager *m = userdata;
 635         Inhibitor *inhibitor;
 636         int r;
 637
 638         assert(message);
 639         assert(m);
 640
 641         r = sd_bus_message_new_method_return(message, &reply);
 642         if (r < 0)
 643                 return r;
 644
 645         r = sd_bus_message_open_container(reply, 'a', "(ssssuu)");
 646         if (r < 0)
 647                 return r;
 648
 649         HASHMAP_FOREACH(inhibitor, m->inhibitors) {
 650
 651                 r = sd_bus_message_append(reply, "(ssssuu)",
 652                                           strempty(inhibit_what_to_string(inhibitor->what)),
 653                                           strempty(inhibitor->who),
 654                                           strempty(inhibitor->why),
 655                                           strempty(inhibit_mode_to_string(inhibitor->mode)),
 656                                           (uint32_t) inhibitor->uid,
 657                                           (uint32_t) inhibitor->pid);
 658                 if (r < 0)
 659                         return r;
 660         }
 661
 662         r = sd_bus_message_close_container(reply);
 663         if (r < 0)
 664                 return r;
 665
 666         return sd_bus_send(NULL, reply, NULL);
 667 }
 668
 669 static int method_create_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 670         const char *service, *type, *class, *cseat, *tty, *display, *remote_user, *remote_host, *desktop;
 671         _cleanup_free_ char *id = NULL;
 672         Session *session = NULL;
 673         uint32_t audit_id = 0;
 674         Manager *m = userdata;
 675         User *user = NULL;
 676         Seat *seat = NULL;
 677         pid_t leader;
 678         uid_t uid;
 679         int remote;
 680         uint32_t vtnr = 0;
 681         SessionType t;
 682         SessionClass c;
 683         int r;
 684
 685         assert(message);
 686         assert(m);
 687
 688         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 689         assert_cc(sizeof(uid_t) == sizeof(uint32_t));
 690
 691         r = sd_bus_message_read(message, "uusssssussbss",
 692                                 &uid, &leader, &service, &type, &class, &desktop, &cseat,
 693                                 &vtnr, &tty, &display, &remote, &remote_user, &remote_host);
 694         if (r < 0)
 695                 return r;
 696
 697         if (!uid_is_valid(uid))
 698                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid UID");
 699         if (leader < 0 || leader == 1 || leader == getpid_cached())
 700                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid leader PID");
 701
 702         if (isempty(type))
 703                 t = _SESSION_TYPE_INVALID;
 704         else {
 705                 t = session_type_from_string(type);
 706                 if (t < 0)
 707                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 708                                                  "Invalid session type %s", type);
 709         }
 710
 711         if (isempty(class))
 712                 c = _SESSION_CLASS_INVALID;
 713         else {
 714                 c = session_class_from_string(class);
 715                 if (c < 0)
 716                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 717                                                  "Invalid session class %s", class);
 718         }
 719
 720         if (isempty(desktop))
 721                 desktop = NULL;
 722         else {
 723                 if (!string_is_safe(desktop))
 724                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 725                                                  "Invalid desktop string %s", desktop);
 726         }
 727
 728         if (isempty(cseat))
 729                 seat = NULL;
 730         else {
 731                 seat = hashmap_get(m->seats, cseat);
 732                 if (!seat)
 733                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT,
 734                                                  "No seat '%s' known", cseat);
 735         }
 736
 737         if (tty_is_vc(tty)) {
 738                 int v;
 739
 740                 if (!seat)
 741                         seat = m->seat0;
 742                 else if (seat != m->seat0)
 743                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 744                                                  "TTY %s is virtual console but seat %s is not seat0", tty, seat->id);
 745
 746                 v = vtnr_from_tty(tty);
 747                 if (v <= 0)
 748                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 749                                                  "Cannot determine VT number from virtual console TTY %s", tty);
 750
 751                 if (vtnr == 0)
 752                         vtnr = (uint32_t) v;
 753                 else if (vtnr != (uint32_t) v)
 754                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 755                                                  "Specified TTY and VT number do not match");
 756
 757         } else if (tty_is_console(tty)) {
 758
 759                 if (!seat)
 760                         seat = m->seat0;
 761                 else if (seat != m->seat0)
 762                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 763                                                  "Console TTY specified but seat is not seat0");
 764
 765                 if (vtnr != 0)
 766                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 767                                                  "Console TTY specified but VT number is not 0");
 768         }
 769
 770         if (seat) {
 771                 if (seat_has_vts(seat)) {
 772                         if (vtnr <= 0 || vtnr > 63)
 773                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 774                                                          "VT number out of range");
 775                 } else {
 776                         if (vtnr != 0)
 777                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 778                                                          "Seat has no VTs but VT number not 0");
 779                 }
 780         }
 781
 782         if (t == _SESSION_TYPE_INVALID) {
 783                 if (!isempty(display))
 784                         t = SESSION_X11;
 785                 else if (!isempty(tty))
 786                         t = SESSION_TTY;
 787                 else
 788                         t = SESSION_UNSPECIFIED;
 789         }
 790
 791         if (c == _SESSION_CLASS_INVALID) {
 792                 if (t == SESSION_UNSPECIFIED)
 793                         c = SESSION_BACKGROUND;
 794                 else
 795                         c = SESSION_USER;
 796         }
 797
 798         if (leader == 0) {
 799                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 800
 801                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 802                 if (r < 0)
 803                         return r;
 804
 805                 r = sd_bus_creds_get_pid(creds, (pid_t*) &leader);
 806                 if (r < 0)
 807                         return r;
 808         }
 809
 810         /* Check if we are already in a logind session. Or if we are in user@.service
 811          * which is a special PAM session that avoids creating a logind session. */
 812         r = manager_get_user_by_pid(m, leader, NULL);
 813         if (r < 0)
 814                 return r;
 815         if (r > 0)
 816                 return sd_bus_error_setf(error, BUS_ERROR_SESSION_BUSY,
 817                                          "Already running in a session or user slice");
 818
 819         /*
 820          * Old gdm and lightdm start the user-session on the same VT as
 821          * the greeter session. But they destroy the greeter session
 822          * after the user-session and want the user-session to take
 823          * over the VT. We need to support this for
 824          * backwards-compatibility, so make sure we allow new sessions
 825          * on a VT that a greeter is running on. Furthermore, to allow
 826          * re-logins, we have to allow a greeter to take over a used VT for
 827          * the exact same reasons.
 828          */
 829         if (c != SESSION_GREETER &&
 830             vtnr > 0 &&
 831             vtnr < m->seat0->position_count &&
 832             m->seat0->positions[vtnr] &&
 833             m->seat0->positions[vtnr]->class != SESSION_GREETER)
 834                 return sd_bus_error_set(error, BUS_ERROR_SESSION_BUSY, "Already occupied by a session");
 835
 836         if (hashmap_size(m->sessions) >= m->sessions_max)
 837                 return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED,
 838                                          "Maximum number of sessions (%" PRIu64 ") reached, refusing further sessions.",
 839                                          m->sessions_max);
 840
 841         (void) audit_session_from_pid(leader, &audit_id);
 842         if (audit_session_is_valid(audit_id)) {
 843                 /* Keep our session IDs and the audit session IDs in sync */
 844
 845                 if (asprintf(&id, "%"PRIu32, audit_id) < 0)
 846                         return -ENOMEM;
 847
 848                 /* Wut? There's already a session by this name and we didn't find it above? Weird, then let's
 849                  * not trust the audit data and let's better register a new ID */
 850                 if (hashmap_contains(m->sessions, id)) {
 851                         log_warning("Existing logind session ID %s used by new audit session, ignoring.", id);
 852                         audit_id = AUDIT_SESSION_INVALID;
 853                         id = mfree(id);
 854                 }
 855         }
 856
 857         if (!id) {
 858                 do {
 859                         id = mfree(id);
 860
 861                         if (asprintf(&id, "c%lu", ++m->session_counter) < 0)
 862                                 return -ENOMEM;
 863
 864                 } while (hashmap_contains(m->sessions, id));
 865         }
 866
 867         /* The generated names should not clash with 'auto' or 'self' */
 868         assert(!SESSION_IS_SELF(id));
 869         assert(!SESSION_IS_AUTO(id));
 870
 871         /* If we are not watching utmp already, try again */
 872         manager_reconnect_utmp(m);
 873
 874         r = manager_add_user_by_uid(m, uid, &user);
 875         if (r < 0)
 876                 goto fail;
 877
 878         r = manager_add_session(m, id, &session);
 879         if (r < 0)
 880                 goto fail;
 881
 882         session_set_user(session, user);
 883         r = session_set_leader(session, leader);
 884         if (r < 0)
 885                 goto fail;
 886
 887         session->original_type = session->type = t;
 888         session->class = c;
 889         session->remote = remote;
 890         session->vtnr = vtnr;
 891
 892         if (!isempty(tty)) {
 893                 session->tty = strdup(tty);
 894                 if (!session->tty) {
 895                         r = -ENOMEM;
 896                         goto fail;
 897                 }
 898
 899                 session->tty_validity = TTY_FROM_PAM;
 900         }
 901
 902         if (!isempty(display)) {
 903                 session->display = strdup(display);
 904                 if (!session->display) {
 905                         r = -ENOMEM;
 906                         goto fail;
 907                 }
 908         }
 909
 910         if (!isempty(remote_user)) {
 911                 session->remote_user = strdup(remote_user);
 912                 if (!session->remote_user) {
 913                         r = -ENOMEM;
 914                         goto fail;
 915                 }
 916         }
 917
 918         if (!isempty(remote_host)) {
 919                 session->remote_host = strdup(remote_host);
 920                 if (!session->remote_host) {
 921                         r = -ENOMEM;
 922                         goto fail;
 923                 }
 924         }
 925
 926         if (!isempty(service)) {
 927                 session->service = strdup(service);
 928                 if (!session->service) {
 929                         r = -ENOMEM;
 930                         goto fail;
 931                 }
 932         }
 933
 934         if (!isempty(desktop)) {
 935                 session->desktop = strdup(desktop);
 936                 if (!session->desktop) {
 937                         r = -ENOMEM;
 938                         goto fail;
 939                 }
 940         }
 941
 942         if (seat) {
 943                 r = seat_attach_session(seat, session);
 944                 if (r < 0)
 945                         goto fail;
 946         }
 947
 948         r = sd_bus_message_enter_container(message, 'a', "(sv)");
 949         if (r < 0)
 950                 goto fail;
 951
 952         r = session_start(session, message, error);
 953         if (r < 0)
 954                 goto fail;
 955
 956         r = sd_bus_message_exit_container(message);
 957         if (r < 0)
 958                 goto fail;
 959
 960         session->create_message = sd_bus_message_ref(message);
 961
 962         /* Now, let's wait until the slice unit and stuff got created. We send the reply back from
 963          * session_send_create_reply(). */
 964
 965         return 1;
 966
 967 fail:
 968         if (session)
 969                 session_add_to_gc_queue(session);
 970
 971         if (user)
 972                 user_add_to_gc_queue(user);
 973
 974         return r;
 975 }
 976
 977 static int method_release_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 978         Manager *m = userdata;
 979         Session *session;
 980         const char *name;
 981         int r;
 982
 983         assert(message);
 984         assert(m);
 985
 986         r = sd_bus_message_read(message, "s", &name);
 987         if (r < 0)
 988                 return r;
 989
 990         r = manager_get_session_from_creds(m, message, name, error, &session);
 991         if (r < 0)
 992                 return r;
 993
 994         r = session_release(session);
 995         if (r < 0)
 996                 return r;
 997
 998         return sd_bus_reply_method_return(message, NULL);
 999 }
1000
1001 static int method_activate_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1002         Manager *m = userdata;
1003         Session *session;
1004         const char *name;
1005         int r;
1006
1007         assert(message);
1008         assert(m);
1009
1010         r = sd_bus_message_read(message, "s", &name);
1011         if (r < 0)
1012                 return r;
1013
1014         r = manager_get_session_from_creds(m, message, name, error, &session);
1015         if (r < 0)
1016                 return r;
1017
1018         /* PolicyKit is done by bus_session_method_activate() */
1019
1020         return bus_session_method_activate(message, session, error);
1021 }
1022
1023 static int method_activate_session_on_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1024         const char *session_name, *seat_name;
1025         Manager *m = userdata;
1026         Session *session;
1027         Seat *seat;
1028         int r;
1029
1030         assert(message);
1031         assert(m);
1032
1033         /* Same as ActivateSession() but refuses to work if the seat doesn't match */
1034
1035         r = sd_bus_message_read(message, "ss", &session_name, &seat_name);
1036         if (r < 0)
1037                 return r;
1038
1039         r = manager_get_session_from_creds(m, message, session_name, error, &session);
1040         if (r < 0)
1041                 return r;
1042
1043         r = manager_get_seat_from_creds(m, message, seat_name, error, &seat);
1044         if (r < 0)
1045                 return r;
1046
1047         if (session->seat != seat)
1048                 return sd_bus_error_setf(error, BUS_ERROR_SESSION_NOT_ON_SEAT,
1049                                          "Session %s not on seat %s", session_name, seat_name);
1050
1051         r = check_polkit_chvt(message, m, error);
1052         if (r < 0)
1053                 return r;
1054         if (r == 0)
1055                 return 1; /* Will call us back */
1056
1057         r = session_activate(session);
1058         if (r < 0)
1059                 return r;
1060
1061         return sd_bus_reply_method_return(message, NULL);
1062 }
1063
1064 static int method_lock_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1065         Manager *m = userdata;
1066         Session *session;
1067         const char *name;
1068         int r;
1069
1070         assert(message);
1071         assert(m);
1072
1073         r = sd_bus_message_read(message, "s", &name);
1074         if (r < 0)
1075                 return r;
1076
1077         r = manager_get_session_from_creds(m, message, name, error, &session);
1078         if (r < 0)
1079                 return r;
1080
1081         return bus_session_method_lock(message, session, error);
1082 }
1083
1084 static int method_lock_sessions(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1085         Manager *m = userdata;
1086         int r;
1087
1088         assert(message);
1089         assert(m);
1090
1091         r = bus_verify_polkit_async(
1092                         message,
1093                         CAP_SYS_ADMIN,
1094                         "org.freedesktop.login1.lock-sessions",
1095                         NULL,
1096                         false,
1097                         UID_INVALID,
1098                         &m->polkit_registry,
1099                         error);
1100         if (r < 0)
1101                 return r;
1102         if (r == 0)
1103                 return 1; /* Will call us back */
1104
1105         r = session_send_lock_all(m, streq(sd_bus_message_get_member(message), "LockSessions"));
1106         if (r < 0)
1107                 return r;
1108
1109         return sd_bus_reply_method_return(message, NULL);
1110 }
1111
1112 static int method_kill_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1113         const char *name;
1114         Manager *m = userdata;
1115         Session *session;
1116         int r;
1117
1118         assert(message);
1119         assert(m);
1120
1121         r = sd_bus_message_read(message, "s", &name);
1122         if (r < 0)
1123                 return r;
1124
1125         r = manager_get_session_from_creds(m, message, name, error, &session);
1126         if (r < 0)
1127                 return r;
1128
1129         return bus_session_method_kill(message, session, error);
1130 }
1131
1132 static int method_kill_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1133         Manager *m = userdata;
1134         uint32_t uid;
1135         User *user;
1136         int r;
1137
1138         assert(message);
1139         assert(m);
1140
1141         r = sd_bus_message_read(message, "u", &uid);
1142         if (r < 0)
1143                 return r;
1144
1145         r = manager_get_user_from_creds(m, message, uid, error, &user);
1146         if (r < 0)
1147                 return r;
1148
1149         return bus_user_method_kill(message, user, error);
1150 }
1151
1152 static int method_terminate_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1153         Manager *m = userdata;
1154         const char *name;
1155         Session *session;
1156         int r;
1157
1158         assert(message);
1159         assert(m);
1160
1161         r = sd_bus_message_read(message, "s", &name);
1162         if (r < 0)
1163                 return r;
1164
1165         r = manager_get_session_from_creds(m, message, name, error, &session);
1166         if (r < 0)
1167                 return r;
1168
1169         return bus_session_method_terminate(message, session, error);
1170 }
1171
1172 static int method_terminate_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1173         Manager *m = userdata;
1174         uint32_t uid;
1175         User *user;
1176         int r;
1177
1178         assert(message);
1179         assert(m);
1180
1181         r = sd_bus_message_read(message, "u", &uid);
1182         if (r < 0)
1183                 return r;
1184
1185         r = manager_get_user_from_creds(m, message, uid, error, &user);
1186         if (r < 0)
1187                 return r;
1188
1189         return bus_user_method_terminate(message, user, error);
1190 }
1191
1192 static int method_terminate_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1193         Manager *m = userdata;
1194         const char *name;
1195         Seat *seat;
1196         int r;
1197
1198         assert(message);
1199         assert(m);
1200
1201         r = sd_bus_message_read(message, "s", &name);
1202         if (r < 0)
1203                 return r;
1204
1205         r = manager_get_seat_from_creds(m, message, name, error, &seat);
1206         if (r < 0)
1207                 return r;
1208
1209         return bus_seat_method_terminate(message, seat, error);
1210 }
1211
1212 static int method_set_user_linger(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1213         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
1214         _cleanup_free_ char *cc = NULL;
1215         Manager *m = userdata;
1216         int r, b, interactive;
1217         struct passwd *pw;
1218         const char *path;
1219         uint32_t uid, auth_uid;
1220
1221         assert(message);
1222         assert(m);
1223
1224         r = sd_bus_message_read(message, "ubb", &uid, &b, &interactive);
1225         if (r < 0)
1226                 return r;
1227
1228         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID |
1229                                                SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds);
1230         if (r < 0)
1231                 return r;
1232
1233         if (!uid_is_valid(uid)) {
1234                 /* Note that we get the owner UID of the session or user unit,
1235                  * not the actual client UID here! */
1236                 r = sd_bus_creds_get_owner_uid(creds, &uid);
1237                 if (r < 0)
1238                         return r;
1239         }
1240
1241         /* owner_uid is racy, so for authorization we must use euid */
1242         r = sd_bus_creds_get_euid(creds, &auth_uid);
1243         if (r < 0)
1244                 return r;
1245
1246         errno = 0;
1247         pw = getpwuid(uid);
1248         if (!pw)
1249                 return errno_or_else(ENOENT);
1250
1251         r = bus_verify_polkit_async(
1252                         message,
1253                         CAP_SYS_ADMIN,
1254                         uid == auth_uid ? "org.freedesktop.login1.set-self-linger" :
1255                                           "org.freedesktop.login1.set-user-linger",
1256                         NULL,
1257                         interactive,
1258                         UID_INVALID,
1259                         &m->polkit_registry,
1260                         error);
1261         if (r < 0)
1262                 return r;
1263         if (r == 0)
1264                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1265
1266         (void) mkdir_p_label("/var/lib/systemd", 0755);
1267         r = mkdir_safe_label("/var/lib/systemd/linger", 0755, 0, 0, MKDIR_WARN_MODE);
1268         if (r < 0)
1269                 return r;
1270
1271         cc = cescape(pw->pw_name);
1272         if (!cc)
1273                 return -ENOMEM;
1274
1275         path = strjoina("/var/lib/systemd/linger/", cc);
1276         if (b) {
1277                 User *u;
1278
1279                 r = touch(path);
1280                 if (r < 0)
1281                         return r;
1282
1283                 if (manager_add_user_by_uid(m, uid, &u) >= 0)
1284                         user_start(u);
1285
1286         } else {
1287                 User *u;
1288
1289                 r = unlink(path);
1290                 if (r < 0 && errno != ENOENT)
1291                         return -errno;
1292
1293                 u = hashmap_get(m->users, UID_TO_PTR(uid));
1294                 if (u)
1295                         user_add_to_gc_queue(u);
1296         }
1297
1298         return sd_bus_reply_method_return(message, NULL);
1299 }
1300
1301 static int trigger_device(Manager *m, sd_device *d) {
1302         _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL;
1303         int r;
1304
1305         assert(m);
1306
1307         r = sd_device_enumerator_new(&e);
1308         if (r < 0)
1309                 return r;
1310
1311         r = sd_device_enumerator_allow_uninitialized(e);
1312         if (r < 0)
1313                 return r;
1314
1315         if (d) {
1316                 r = sd_device_enumerator_add_match_parent(e, d);
1317                 if (r < 0)
1318                         return r;
1319         }
1320
1321         FOREACH_DEVICE(e, d) {
1322                 r = sd_device_trigger(d, SD_DEVICE_CHANGE);
1323                 if (r < 0)
1324                         log_device_debug_errno(d, r, "Failed to trigger device, ignoring: %m");
1325         }
1326
1327         return 0;
1328 }
1329
1330 static int attach_device(Manager *m, const char *seat, const char *sysfs) {
1331         _cleanup_(sd_device_unrefp) sd_device *d = NULL;
1332         _cleanup_free_ char *rule = NULL, *file = NULL;
1333         const char *id_for_seat;
1334         int r;
1335
1336         assert(m);
1337         assert(seat);
1338         assert(sysfs);
1339
1340         r = sd_device_new_from_syspath(&d, sysfs);
1341         if (r < 0)
1342                 return r;
1343
1344         if (sd_device_has_current_tag(d, "seat") <= 0)
1345                 return -ENODEV;
1346
1347         if (sd_device_get_property_value(d, "ID_FOR_SEAT", &id_for_seat) < 0)
1348                 return -ENODEV;
1349
1350         if (asprintf(&file, "/etc/udev/rules.d/72-seat-%s.rules", id_for_seat) < 0)
1351                 return -ENOMEM;
1352
1353         if (asprintf(&rule, "TAG==\"seat\", ENV{ID_FOR_SEAT}==\"%s\", ENV{ID_SEAT}=\"%s\"", id_for_seat, seat) < 0)
1354                 return -ENOMEM;
1355
1356         (void) mkdir_p_label("/etc/udev/rules.d", 0755);
1357         r = write_string_file_atomic_label(file, rule);
1358         if (r < 0)
1359                 return r;
1360
1361         return trigger_device(m, d);
1362 }
1363
1364 static int flush_devices(Manager *m) {
1365         _cleanup_closedir_ DIR *d = NULL;
1366
1367         assert(m);
1368
1369         d = opendir("/etc/udev/rules.d");
1370         if (!d) {
1371                 if (errno != ENOENT)
1372                         log_warning_errno(errno, "Failed to open /etc/udev/rules.d: %m");
1373         } else {
1374                 struct dirent *de;
1375
1376                 FOREACH_DIRENT_ALL(de, d, break) {
1377                         dirent_ensure_type(d, de);
1378                         if (!dirent_is_file(de))
1379                                 continue;
1380
1381                         if (!startswith(de->d_name, "72-seat-"))
1382                                 continue;
1383
1384                         if (!endswith(de->d_name, ".rules"))
1385                                 continue;
1386
1387                         if (unlinkat(dirfd(d), de->d_name, 0) < 0)
1388                                 log_warning_errno(errno, "Failed to unlink %s: %m", de->d_name);
1389                 }
1390         }
1391
1392         return trigger_device(m, NULL);
1393 }
1394
1395 static int method_attach_device(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1396         const char *sysfs, *seat;
1397         Manager *m = userdata;
1398         int interactive, r;
1399
1400         assert(message);
1401         assert(m);
1402
1403         r = sd_bus_message_read(message, "ssb", &seat, &sysfs, &interactive);
1404         if (r < 0)
1405                 return r;
1406
1407         if (!path_is_normalized(sysfs))
1408                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not normalized", sysfs);
1409         if (!path_startswith(sysfs, "/sys"))
1410                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not in /sys", sysfs);
1411
1412         if (SEAT_IS_SELF(seat) || SEAT_IS_AUTO(seat)) {
1413                 Seat *found;
1414
1415                 r = manager_get_seat_from_creds(m, message, seat, error, &found);
1416                 if (r < 0)
1417                         return r;
1418
1419                 seat = found->id;
1420
1421         } else if (!seat_name_is_valid(seat)) /* Note that a seat does not have to exist yet for this operation to succeed */
1422                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Seat name %s is not valid", seat);
1423
1424         r = bus_verify_polkit_async(
1425                         message,
1426                         CAP_SYS_ADMIN,
1427                         "org.freedesktop.login1.attach-device",
1428                         NULL,
1429                         interactive,
1430                         UID_INVALID,
1431                         &m->polkit_registry,
1432                         error);
1433         if (r < 0)
1434                 return r;
1435         if (r == 0)
1436                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1437
1438         r = attach_device(m, seat, sysfs);
1439         if (r < 0)
1440                 return r;
1441
1442         return sd_bus_reply_method_return(message, NULL);
1443 }
1444
1445 static int method_flush_devices(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1446         Manager *m = userdata;
1447         int interactive, r;
1448
1449         assert(message);
1450         assert(m);
1451
1452         r = sd_bus_message_read(message, "b", &interactive);
1453         if (r < 0)
1454                 return r;
1455
1456         r = bus_verify_polkit_async(
1457                         message,
1458                         CAP_SYS_ADMIN,
1459                         "org.freedesktop.login1.flush-devices",
1460                         NULL,
1461                         interactive,
1462                         UID_INVALID,
1463                         &m->polkit_registry,
1464                         error);
1465         if (r < 0)
1466                 return r;
1467         if (r == 0)
1468                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1469
1470         r = flush_devices(m);
1471         if (r < 0)
1472                 return r;
1473
1474         return sd_bus_reply_method_return(message, NULL);
1475 }
1476
1477 static int have_multiple_sessions(
1478                 Manager *m,
1479                 uid_t uid) {
1480
1481         Session *session;
1482
1483         assert(m);
1484
1485         /* Check for other users' sessions. Greeter sessions do not
1486          * count, and non-login sessions do not count either. */
1487         HASHMAP_FOREACH(session, m->sessions)
1488                 if (session->class == SESSION_USER &&
1489                     session->user->user_record->uid != uid)
1490                         return true;
1491
1492         return false;
1493 }
1494
1495 static int bus_manager_log_shutdown(
1496                 Manager *m,
1497                 const char *unit_name) {
1498
1499         const char *p, *q;
1500
1501         assert(m);
1502         assert(unit_name);
1503
1504         if (streq(unit_name, SPECIAL_POWEROFF_TARGET)) {
1505                 p = "MESSAGE=System is powering down";
1506                 q = "SHUTDOWN=power-off";
1507         } else if (streq(unit_name, SPECIAL_REBOOT_TARGET)) {
1508                 p = "MESSAGE=System is rebooting";
1509                 q = "SHUTDOWN=reboot";
1510         } else if (streq(unit_name, SPECIAL_HALT_TARGET)) {
1511                 p = "MESSAGE=System is halting";
1512                 q = "SHUTDOWN=halt";
1513         } else if (streq(unit_name, SPECIAL_KEXEC_TARGET)) {
1514                 p = "MESSAGE=System is rebooting with kexec";
1515                 q = "SHUTDOWN=kexec";
1516         } else {
1517                 p = "MESSAGE=System is shutting down";
1518                 q = NULL;
1519         }
1520
1521         if (isempty(m->wall_message))
1522                 p = strjoina(p, ".");
1523         else
1524                 p = strjoina(p, " (", m->wall_message, ").");
1525
1526         return log_struct(LOG_NOTICE,
1527                           "MESSAGE_ID=" SD_MESSAGE_SHUTDOWN_STR,
1528                           p,
1529                           q);
1530 }
1531
1532 static int lid_switch_ignore_handler(sd_event_source *e, uint64_t usec, void *userdata) {
1533         Manager *m = userdata;
1534
1535         assert(e);
1536         assert(m);
1537
1538         m->lid_switch_ignore_event_source = sd_event_source_unref(m->lid_switch_ignore_event_source);
1539         return 0;
1540 }
1541
1542 int manager_set_lid_switch_ignore(Manager *m, usec_t until) {
1543         int r;
1544
1545         assert(m);
1546
1547         if (until <= now(CLOCK_MONOTONIC))
1548                 return 0;
1549
1550         /* We want to ignore the lid switch for a while after each
1551          * suspend, and after boot-up. Hence let's install a timer for
1552          * this. As long as the event source exists we ignore the lid
1553          * switch. */
1554
1555         if (m->lid_switch_ignore_event_source) {
1556                 usec_t u;
1557
1558                 r = sd_event_source_get_time(m->lid_switch_ignore_event_source, &u);
1559                 if (r < 0)
1560                         return r;
1561
1562                 if (until <= u)
1563                         return 0;
1564
1565                 r = sd_event_source_set_time(m->lid_switch_ignore_event_source, until);
1566         } else
1567                 r = sd_event_add_time(
1568                                 m->event,
1569                                 &m->lid_switch_ignore_event_source,
1570                                 CLOCK_MONOTONIC,
1571                                 until, 0,
1572                                 lid_switch_ignore_handler, m);
1573
1574         return r;
1575 }
1576
1577 static int send_prepare_for(Manager *m, InhibitWhat w, bool _active) {
1578         int active = _active;
1579
1580         assert(m);
1581         assert(IN_SET(w, INHIBIT_SHUTDOWN, INHIBIT_SLEEP));
1582
1583         return sd_bus_emit_signal(m->bus,
1584                                   "/org/freedesktop/login1",
1585                                   "org.freedesktop.login1.Manager",
1586                                   w == INHIBIT_SHUTDOWN ? "PrepareForShutdown" : "PrepareForSleep",
1587                                   "b",
1588                                   active);
1589 }
1590
1591 static int execute_shutdown_or_sleep(
1592                 Manager *m,
1593                 InhibitWhat w,
1594                 const char *unit_name,
1595                 sd_bus_error *error) {
1596
1597         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1598         const char *p;
1599         int r;
1600
1601         assert(m);
1602         assert(w > 0);
1603         assert(w < _INHIBIT_WHAT_MAX);
1604         assert(unit_name);
1605
1606         if (w == INHIBIT_SHUTDOWN)
1607                 bus_manager_log_shutdown(m, unit_name);
1608
1609         r = bus_call_method(
1610                         m->bus,
1611                         bus_systemd_mgr,
1612                         "StartUnit",
1613                         error,
1614                         &reply,
1615                         "ss", unit_name, "replace-irreversibly");
1616         if (r < 0)
1617                 goto error;
1618
1619         r = sd_bus_message_read(reply, "o", &p);
1620         if (r < 0)
1621                 goto error;
1622
1623         r = free_and_strdup(&m->action_job, p);
1624         if (r < 0)
1625                 goto error;
1626
1627         m->action_unit = unit_name;
1628         m->action_what = w;
1629
1630         /* Make sure the lid switch is ignored for a while */
1631         manager_set_lid_switch_ignore(m, usec_add(now(CLOCK_MONOTONIC), m->holdoff_timeout_usec));
1632
1633         return 0;
1634
1635 error:
1636         /* Tell people that they now may take a lock again */
1637         (void) send_prepare_for(m, w, false);
1638
1639         return r;
1640 }
1641
1642 int manager_dispatch_delayed(Manager *manager, bool timeout) {
1643
1644         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1645         Inhibitor *offending = NULL;
1646         int r;
1647
1648         assert(manager);
1649
1650         if (manager->action_what == 0 || manager->action_job)
1651                 return 0;
1652
1653         if (manager_is_inhibited(manager, manager->action_what, INHIBIT_DELAY, NULL, false, false, 0, &offending)) {
1654                 _cleanup_free_ char *comm = NULL, *u = NULL;
1655
1656                 if (!timeout)
1657                         return 0;
1658
1659                 (void) get_process_comm(offending->pid, &comm);
1660                 u = uid_to_name(offending->uid);
1661
1662                 log_notice("Delay lock is active (UID "UID_FMT"/%s, PID "PID_FMT"/%s) but inhibitor timeout is reached.",
1663                            offending->uid, strna(u),
1664                            offending->pid, strna(comm));
1665         }
1666
1667         /* Actually do the operation */
1668         r = execute_shutdown_or_sleep(manager, manager->action_what, manager->action_unit, &error);
1669         if (r < 0) {
1670                 log_warning("Error during inhibitor-delayed operation (already returned success to client): %s",
1671                             bus_error_message(&error, r));
1672
1673                 manager->action_unit = NULL;
1674                 manager->action_what = 0;
1675                 return r;
1676         }
1677
1678         return 1;
1679 }
1680
1681 static int manager_inhibit_timeout_handler(
1682                         sd_event_source *s,
1683                         uint64_t usec,
1684                         void *userdata) {
1685
1686         Manager *manager = userdata;
1687         int r;
1688
1689         assert(manager);
1690         assert(manager->inhibit_timeout_source == s);
1691
1692         r = manager_dispatch_delayed(manager, true);
1693         return (r < 0) ? r : 0;
1694 }
1695
1696 static int delay_shutdown_or_sleep(
1697                 Manager *m,
1698                 InhibitWhat w,
1699                 const char *unit_name) {
1700
1701         int r;
1702
1703         assert(m);
1704         assert(w >= 0);
1705         assert(w < _INHIBIT_WHAT_MAX);
1706         assert(unit_name);
1707
1708         if (m->inhibit_timeout_source) {
1709                 r = sd_event_source_set_time_relative(m->inhibit_timeout_source, m->inhibit_delay_max);
1710                 if (r < 0)
1711                         return log_error_errno(r, "sd_event_source_set_time_relative() failed: %m");
1712
1713                 r = sd_event_source_set_enabled(m->inhibit_timeout_source, SD_EVENT_ONESHOT);
1714                 if (r < 0)
1715                         return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
1716         } else {
1717                 r = sd_event_add_time_relative(
1718                                 m->event,
1719                                 &m->inhibit_timeout_source,
1720                                 CLOCK_MONOTONIC, m->inhibit_delay_max, 0,
1721                                 manager_inhibit_timeout_handler, m);
1722                 if (r < 0)
1723                         return r;
1724         }
1725
1726         m->action_unit = unit_name;
1727         m->action_what = w;
1728
1729         return 0;
1730 }
1731
1732 int bus_manager_shutdown_or_sleep_now_or_later(
1733                 Manager *m,
1734                 const char *unit_name,
1735                 InhibitWhat w,
1736                 sd_bus_error *error) {
1737
1738         _cleanup_free_ char *load_state = NULL;
1739         bool delayed;
1740         int r;
1741
1742         assert(m);
1743         assert(unit_name);
1744         assert(w > 0);
1745         assert(w < _INHIBIT_WHAT_MAX);
1746         assert(!m->action_job);
1747
1748         r = unit_load_state(m->bus, unit_name, &load_state);
1749         if (r < 0)
1750                 return r;
1751
1752         if (!streq(load_state, "loaded"))
1753                 return log_notice_errno(SYNTHETIC_ERRNO(EACCES),
1754                                         "Unit %s is %s, refusing operation.",
1755                                         unit_name, load_state);
1756
1757         /* Tell everybody to prepare for shutdown/sleep */
1758         (void) send_prepare_for(m, w, true);
1759
1760         delayed =
1761                 m->inhibit_delay_max > 0 &&
1762                 manager_is_inhibited(m, w, INHIBIT_DELAY, NULL, false, false, 0, NULL);
1763
1764         if (delayed)
1765                 /* Shutdown is delayed, keep in mind what we
1766                  * want to do, and start a timeout */
1767                 r = delay_shutdown_or_sleep(m, w, unit_name);
1768         else
1769                 /* Shutdown is not delayed, execute it
1770                  * immediately */
1771                 r = execute_shutdown_or_sleep(m, w, unit_name, error);
1772
1773         return r;
1774 }
1775
1776 static int verify_shutdown_creds(
1777                 Manager *m,
1778                 sd_bus_message *message,
1779                 InhibitWhat w,
1780                 const char *action,
1781                 const char *action_multiple_sessions,
1782                 const char *action_ignore_inhibit,
1783                 uint64_t flags,
1784                 sd_bus_error *error) {
1785
1786         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
1787         bool multiple_sessions, blocked, interactive;
1788         uid_t uid;
1789         int r;
1790
1791         assert(m);
1792         assert(message);
1793         assert(w >= 0);
1794         assert(w <= _INHIBIT_WHAT_MAX);
1795
1796         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
1797         if (r < 0)
1798                 return r;
1799
1800         r = sd_bus_creds_get_euid(creds, &uid);
1801         if (r < 0)
1802                 return r;
1803
1804         r = have_multiple_sessions(m, uid);
1805         if (r < 0)
1806                 return r;
1807
1808         multiple_sessions = r > 0;
1809         blocked = manager_is_inhibited(m, w, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
1810         interactive = flags & SD_LOGIND_INTERACTIVE;
1811
1812         if (multiple_sessions && action_multiple_sessions) {
1813                 r = bus_verify_polkit_async(message, CAP_SYS_BOOT, action_multiple_sessions, NULL, interactive, UID_INVALID, &m->polkit_registry, error);
1814                 if (r < 0)
1815                         return r;
1816                 if (r == 0)
1817                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1818         }
1819
1820         if (blocked) {
1821                 /* We don't check polkit for root here, because you can't be more privileged than root */
1822                 if (uid == 0 && (flags & SD_LOGIND_ROOT_CHECK_INHIBITORS))
1823                         return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED,
1824                                                  "Access denied to root due to active block inhibitor");
1825
1826                 if (action_ignore_inhibit) {
1827                         r = bus_verify_polkit_async(message, CAP_SYS_BOOT, action_ignore_inhibit, NULL, interactive, UID_INVALID, &m->polkit_registry, error);
1828                         if (r < 0)
1829                                 return r;
1830                         if (r == 0)
1831                                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1832                 }
1833         }
1834
1835         if (!multiple_sessions && !blocked && action) {
1836                 r = bus_verify_polkit_async(message, CAP_SYS_BOOT, action, NULL, interactive, UID_INVALID, &m->polkit_registry, error);
1837                 if (r < 0)
1838                         return r;
1839                 if (r == 0)
1840                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1841         }
1842
1843         return 0;
1844 }
1845
1846 static int method_do_shutdown_or_sleep(
1847                 Manager *m,
1848                 sd_bus_message *message,
1849                 const char *unit_name,
1850                 InhibitWhat w,
1851                 const char *action,
1852                 const char *action_multiple_sessions,
1853                 const char *action_ignore_inhibit,
1854                 const char *sleep_verb,
1855                 bool with_flags,
1856                 sd_bus_error *error) {
1857
1858         uint64_t flags;
1859         int r;
1860
1861         assert(m);
1862         assert(message);
1863         assert(unit_name);
1864         assert(w >= 0);
1865         assert(w <= _INHIBIT_WHAT_MAX);
1866
1867         if (with_flags) {
1868                 /* New style method: with flags parameter (and interactive bool in the bus message header) */
1869                 r = sd_bus_message_read(message, "t", &flags);
1870                 if (r < 0)
1871                         return r;
1872                 if ((flags & ~SD_LOGIND_SHUTDOWN_AND_SLEEP_FLAGS_PUBLIC) != 0)
1873                         return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid flags parameter");
1874                 if (!streq(unit_name, SPECIAL_REBOOT_TARGET) && (flags & SD_LOGIND_REBOOT_VIA_KEXEC))
1875                         return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Reboot via kexec is only applicable with reboot operations");
1876         } else {
1877                 /* Old style method: no flags parameter, but interactive bool passed as boolean in
1878                  * payload. Let's convert this argument to the new-style flags parameter for our internal
1879                  * use. */
1880                 int interactive;
1881
1882                 r = sd_bus_message_read(message, "b", &interactive);
1883                 if (r < 0)
1884                         return r;
1885
1886                 flags = interactive ? SD_LOGIND_INTERACTIVE : 0;
1887         }
1888
1889         if ((flags & SD_LOGIND_REBOOT_VIA_KEXEC) && kexec_loaded())
1890                 unit_name = SPECIAL_KEXEC_TARGET;
1891
1892         /* Don't allow multiple jobs being executed at the same time */
1893         if (m->action_what > 0)
1894                 return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS,
1895                                          "There's already a shutdown or sleep operation in progress");
1896
1897         if (sleep_verb) {
1898                 r = can_sleep(sleep_verb);
1899                 if (r == -ENOSPC)
1900                         return sd_bus_error_set(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
1901                                                 "Not enough swap space for hibernation");
1902                 if (r == 0)
1903                         return sd_bus_error_setf(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
1904                                                  "Sleep verb \"%s\" not supported", sleep_verb);
1905                 if (r < 0)
1906                         return r;
1907         }
1908
1909         r = verify_shutdown_creds(m, message, w, action, action_multiple_sessions,
1910                                   action_ignore_inhibit, flags, error);
1911         if (r != 0)
1912                 return r;
1913
1914         r = bus_manager_shutdown_or_sleep_now_or_later(m, unit_name, w, error);
1915         if (r < 0)
1916                 return r;
1917
1918         return sd_bus_reply_method_return(message, NULL);
1919 }
1920
1921 static int method_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1922         Manager *m = userdata;
1923
1924         return method_do_shutdown_or_sleep(
1925                         m, message,
1926                         SPECIAL_POWEROFF_TARGET,
1927                         INHIBIT_SHUTDOWN,
1928                         "org.freedesktop.login1.power-off",
1929                         "org.freedesktop.login1.power-off-multiple-sessions",
1930                         "org.freedesktop.login1.power-off-ignore-inhibit",
1931                         NULL,
1932                         sd_bus_message_is_method_call(message, NULL, "PowerOffWithFlags"),
1933                         error);
1934 }
1935
1936 static int method_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1937         Manager *m = userdata;
1938
1939         return method_do_shutdown_or_sleep(
1940                         m, message,
1941                         SPECIAL_REBOOT_TARGET,
1942                         INHIBIT_SHUTDOWN,
1943                         "org.freedesktop.login1.reboot",
1944                         "org.freedesktop.login1.reboot-multiple-sessions",
1945                         "org.freedesktop.login1.reboot-ignore-inhibit",
1946                         NULL,
1947                         sd_bus_message_is_method_call(message, NULL, "RebootWithFlags"),
1948                         error);
1949 }
1950
1951 static int method_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1952         Manager *m = userdata;
1953
1954         return method_do_shutdown_or_sleep(
1955                         m, message,
1956                         SPECIAL_HALT_TARGET,
1957                         INHIBIT_SHUTDOWN,
1958                         "org.freedesktop.login1.halt",
1959                         "org.freedesktop.login1.halt-multiple-sessions",
1960                         "org.freedesktop.login1.halt-ignore-inhibit",
1961                         NULL,
1962                         sd_bus_message_is_method_call(message, NULL, "HaltWithFlags"),
1963                         error);
1964 }
1965
1966 static int method_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1967         Manager *m = userdata;
1968
1969         return method_do_shutdown_or_sleep(
1970                         m, message,
1971                         SPECIAL_SUSPEND_TARGET,
1972                         INHIBIT_SLEEP,
1973                         "org.freedesktop.login1.suspend",
1974                         "org.freedesktop.login1.suspend-multiple-sessions",
1975                         "org.freedesktop.login1.suspend-ignore-inhibit",
1976                         "suspend",
1977                         sd_bus_message_is_method_call(message, NULL, "SuspendWithFlags"),
1978                         error);
1979 }
1980
1981 static int method_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1982         Manager *m = userdata;
1983
1984         return method_do_shutdown_or_sleep(
1985                         m, message,
1986                         SPECIAL_HIBERNATE_TARGET,
1987                         INHIBIT_SLEEP,
1988                         "org.freedesktop.login1.hibernate",
1989                         "org.freedesktop.login1.hibernate-multiple-sessions",
1990                         "org.freedesktop.login1.hibernate-ignore-inhibit",
1991                         "hibernate",
1992                         sd_bus_message_is_method_call(message, NULL, "HibernateWithFlags"),
1993                         error);
1994 }
1995
1996 static int method_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1997         Manager *m = userdata;
1998
1999         return method_do_shutdown_or_sleep(
2000                         m, message,
2001                         SPECIAL_HYBRID_SLEEP_TARGET,
2002                         INHIBIT_SLEEP,
2003                         "org.freedesktop.login1.hibernate",
2004                         "org.freedesktop.login1.hibernate-multiple-sessions",
2005                         "org.freedesktop.login1.hibernate-ignore-inhibit",
2006                         "hybrid-sleep",
2007                         sd_bus_message_is_method_call(message, NULL, "HybridSleepWithFlags"),
2008                         error);
2009 }
2010
2011 static int method_suspend_then_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2012         Manager *m = userdata;
2013
2014         return method_do_shutdown_or_sleep(
2015                         m, message,
2016                         SPECIAL_SUSPEND_THEN_HIBERNATE_TARGET,
2017                         INHIBIT_SLEEP,
2018                         "org.freedesktop.login1.hibernate",
2019                         "org.freedesktop.login1.hibernate-multiple-sessions",
2020                         "org.freedesktop.login1.hibernate-ignore-inhibit",
2021                         "hybrid-sleep",
2022                         sd_bus_message_is_method_call(message, NULL, "SuspendThenHibernateWithFlags"),
2023                         error);
2024 }
2025
2026 static int nologin_timeout_handler(
2027                         sd_event_source *s,
2028                         uint64_t usec,
2029                         void *userdata) {
2030
2031         Manager *m = userdata;
2032
2033         log_info("Creating /run/nologin, blocking further logins...");
2034
2035         m->unlink_nologin =
2036                 create_shutdown_run_nologin_or_warn() >= 0;
2037
2038         return 0;
2039 }
2040
2041 static int update_schedule_file(Manager *m) {
2042         _cleanup_free_ char *temp_path = NULL;
2043         _cleanup_fclose_ FILE *f = NULL;
2044         int r;
2045
2046         assert(m);
2047
2048         r = mkdir_safe_label("/run/systemd/shutdown", 0755, 0, 0, MKDIR_WARN_MODE);
2049         if (r < 0)
2050                 return log_error_errno(r, "Failed to create shutdown subdirectory: %m");
2051
2052         r = fopen_temporary("/run/systemd/shutdown/scheduled", &f, &temp_path);
2053         if (r < 0)
2054                 return log_error_errno(r, "Failed to save information about scheduled shutdowns: %m");
2055
2056         (void) fchmod(fileno(f), 0644);
2057
2058         fprintf(f,
2059                 "USEC="USEC_FMT"\n"
2060                 "WARN_WALL=%i\n"
2061                 "MODE=%s\n",
2062                 m->scheduled_shutdown_timeout,
2063                 m->enable_wall_messages,
2064                 m->scheduled_shutdown_type);
2065
2066         if (!isempty(m->wall_message)) {
2067                 _cleanup_free_ char *t = NULL;
2068
2069                 t = cescape(m->wall_message);
2070                 if (!t) {
2071                         r = -ENOMEM;
2072                         goto fail;
2073                 }
2074
2075                 fprintf(f, "WALL_MESSAGE=%s\n", t);
2076         }
2077
2078         r = fflush_and_check(f);
2079         if (r < 0)
2080                 goto fail;
2081
2082         if (rename(temp_path, "/run/systemd/shutdown/scheduled") < 0) {
2083                 r = -errno;
2084                 goto fail;
2085         }
2086
2087         return 0;
2088
2089 fail:
2090         (void) unlink(temp_path);
2091         (void) unlink("/run/systemd/shutdown/scheduled");
2092
2093         return log_error_errno(r, "Failed to write information about scheduled shutdowns: %m");
2094 }
2095
2096 static void reset_scheduled_shutdown(Manager *m) {
2097         assert(m);
2098
2099         m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2100         m->wall_message_timeout_source = sd_event_source_unref(m->wall_message_timeout_source);
2101         m->nologin_timeout_source = sd_event_source_unref(m->nologin_timeout_source);
2102
2103         m->scheduled_shutdown_type = mfree(m->scheduled_shutdown_type);
2104         m->scheduled_shutdown_timeout = 0;
2105         m->shutdown_dry_run = false;
2106
2107         if (m->unlink_nologin) {
2108                 (void) unlink_or_warn("/run/nologin");
2109                 m->unlink_nologin = false;
2110         }
2111
2112         (void) unlink("/run/systemd/shutdown/scheduled");
2113 }
2114
2115 static int manager_scheduled_shutdown_handler(
2116                         sd_event_source *s,
2117                         uint64_t usec,
2118                         void *userdata) {
2119
2120         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
2121         Manager *m = userdata;
2122         const char *target;
2123         int r;
2124
2125         assert(m);
2126
2127         if (isempty(m->scheduled_shutdown_type))
2128                 return 0;
2129
2130         if (streq(m->scheduled_shutdown_type, "poweroff"))
2131                 target = SPECIAL_POWEROFF_TARGET;
2132         else if (streq(m->scheduled_shutdown_type, "reboot"))
2133                 target = SPECIAL_REBOOT_TARGET;
2134         else if (streq(m->scheduled_shutdown_type, "kexec"))
2135                 target = SPECIAL_KEXEC_TARGET;
2136         else if (streq(m->scheduled_shutdown_type, "halt"))
2137                 target = SPECIAL_HALT_TARGET;
2138         else
2139                 assert_not_reached("unexpected shutdown type");
2140
2141         /* Don't allow multiple jobs being executed at the same time */
2142         if (m->action_what > 0) {
2143                 r = -EALREADY;
2144                 log_error("Scheduled shutdown to %s failed: shutdown or sleep operation already in progress", target);
2145                 goto error;
2146         }
2147
2148         if (m->shutdown_dry_run) {
2149                 /* We do not process delay inhibitors here.  Otherwise, we
2150                  * would have to be considered "in progress" (like the check
2151                  * above) for some seconds after our admin has seen the final
2152                  * wall message. */
2153
2154                 bus_manager_log_shutdown(m, target);
2155                 log_info("Running in dry run, suppressing action.");
2156                 reset_scheduled_shutdown(m);
2157
2158                 return 0;
2159         }
2160
2161         r = bus_manager_shutdown_or_sleep_now_or_later(m, target, INHIBIT_SHUTDOWN, &error);
2162         if (r < 0) {
2163                 log_error_errno(r, "Scheduled shutdown to %s failed: %m", target);
2164                 goto error;
2165         }
2166
2167         return 0;
2168
2169 error:
2170         reset_scheduled_shutdown(m);
2171         return r;
2172 }
2173
2174 static int method_schedule_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2175         Manager *m = userdata;
2176         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2177         const char *action_multiple_sessions = NULL;
2178         const char *action_ignore_inhibit = NULL;
2179         const char *action = NULL;
2180         uint64_t elapse;
2181         char *type;
2182         int r;
2183         bool dry_run = false;
2184
2185         assert(m);
2186         assert(message);
2187
2188         r = sd_bus_message_read(message, "st", &type, &elapse);
2189         if (r < 0)
2190                 return r;
2191
2192         if (startswith(type, "dry-")) {
2193                 type += 4;
2194                 dry_run = true;
2195         }
2196
2197         if (streq(type, "poweroff")) {
2198                 action = "org.freedesktop.login1.power-off";
2199                 action_multiple_sessions = "org.freedesktop.login1.power-off-multiple-sessions";
2200                 action_ignore_inhibit = "org.freedesktop.login1.power-off-ignore-inhibit";
2201         } else if (STR_IN_SET(type, "reboot", "kexec")) {
2202                 action = "org.freedesktop.login1.reboot";
2203                 action_multiple_sessions = "org.freedesktop.login1.reboot-multiple-sessions";
2204                 action_ignore_inhibit = "org.freedesktop.login1.reboot-ignore-inhibit";
2205         } else if (streq(type, "halt")) {
2206                 action = "org.freedesktop.login1.halt";
2207                 action_multiple_sessions = "org.freedesktop.login1.halt-multiple-sessions";
2208                 action_ignore_inhibit = "org.freedesktop.login1.halt-ignore-inhibit";
2209         } else
2210                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Unsupported shutdown type");
2211
2212         r = verify_shutdown_creds(m, message, INHIBIT_SHUTDOWN, action, action_multiple_sessions,
2213                                   action_ignore_inhibit, 0, error);
2214         if (r != 0)
2215                 return r;
2216
2217         if (m->scheduled_shutdown_timeout_source) {
2218                 r = sd_event_source_set_time(m->scheduled_shutdown_timeout_source, elapse);
2219                 if (r < 0)
2220                         return log_error_errno(r, "sd_event_source_set_time() failed: %m");
2221
2222                 r = sd_event_source_set_enabled(m->scheduled_shutdown_timeout_source, SD_EVENT_ONESHOT);
2223                 if (r < 0)
2224                         return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
2225         } else {
2226                 r = sd_event_add_time(m->event, &m->scheduled_shutdown_timeout_source,
2227                                       CLOCK_REALTIME, elapse, 0, manager_scheduled_shutdown_handler, m);
2228                 if (r < 0)
2229                         return log_error_errno(r, "sd_event_add_time() failed: %m");
2230         }
2231
2232         r = free_and_strdup(&m->scheduled_shutdown_type, type);
2233         if (r < 0) {
2234                 m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2235                 return log_oom();
2236         }
2237
2238         m->shutdown_dry_run = dry_run;
2239
2240         if (m->nologin_timeout_source) {
2241                 r = sd_event_source_set_time(m->nologin_timeout_source, elapse);
2242                 if (r < 0)
2243                         return log_error_errno(r, "sd_event_source_set_time() failed: %m");
2244
2245                 r = sd_event_source_set_enabled(m->nologin_timeout_source, SD_EVENT_ONESHOT);
2246                 if (r < 0)
2247                         return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
2248         } else {
2249                 r = sd_event_add_time(m->event, &m->nologin_timeout_source,
2250                                       CLOCK_REALTIME, elapse - 5 * USEC_PER_MINUTE, 0, nologin_timeout_handler, m);
2251                 if (r < 0)
2252                         return log_error_errno(r, "sd_event_add_time() failed: %m");
2253         }
2254
2255         m->scheduled_shutdown_timeout = elapse;
2256
2257         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
2258         if (r >= 0) {
2259                 const char *tty = NULL;
2260
2261                 (void) sd_bus_creds_get_uid(creds, &m->scheduled_shutdown_uid);
2262                 (void) sd_bus_creds_get_tty(creds, &tty);
2263
2264                 r = free_and_strdup(&m->scheduled_shutdown_tty, tty);
2265                 if (r < 0) {
2266                         m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2267                         return log_oom();
2268                 }
2269         }
2270
2271         r = manager_setup_wall_message_timer(m);
2272         if (r < 0)
2273                 return r;
2274
2275         r = update_schedule_file(m);
2276         if (r < 0)
2277                 return r;
2278
2279         return sd_bus_reply_method_return(message, NULL);
2280 }
2281
2282 static int method_cancel_scheduled_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2283         Manager *m = userdata;
2284         bool cancelled;
2285
2286         assert(m);
2287         assert(message);
2288
2289         cancelled = m->scheduled_shutdown_type != NULL;
2290         reset_scheduled_shutdown(m);
2291
2292         if (cancelled && m->enable_wall_messages) {
2293                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2294                 _cleanup_free_ char *username = NULL;
2295                 const char *tty = NULL;
2296                 uid_t uid = 0;
2297                 int r;
2298
2299                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
2300                 if (r >= 0) {
2301                         (void) sd_bus_creds_get_uid(creds, &uid);
2302                         (void) sd_bus_creds_get_tty(creds, &tty);
2303                 }
2304
2305                 username = uid_to_name(uid);
2306                 utmp_wall("The system shutdown has been cancelled",
2307                           username, tty, logind_wall_tty_filter, m);
2308         }
2309
2310         return sd_bus_reply_method_return(message, "b", cancelled);
2311 }
2312
2313 static int method_can_shutdown_or_sleep(
2314                 Manager *m,
2315                 sd_bus_message *message,
2316                 InhibitWhat w,
2317                 const char *action,
2318                 const char *action_multiple_sessions,
2319                 const char *action_ignore_inhibit,
2320                 const char *sleep_verb,
2321                 sd_bus_error *error) {
2322
2323         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2324         HandleAction handle;
2325         bool multiple_sessions, challenge, blocked;
2326         const char *result = NULL;
2327         uid_t uid;
2328         int r;
2329
2330         assert(m);
2331         assert(message);
2332         assert(w >= 0);
2333         assert(w <= _INHIBIT_WHAT_MAX);
2334         assert(action);
2335         assert(action_multiple_sessions);
2336         assert(action_ignore_inhibit);
2337
2338         if (sleep_verb) {
2339                 r = can_sleep(sleep_verb);
2340                 if (IN_SET(r,  0, -ENOSPC))
2341                         return sd_bus_reply_method_return(message, "s", "na");
2342                 if (r < 0)
2343                         return r;
2344         }
2345
2346         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
2347         if (r < 0)
2348                 return r;
2349
2350         r = sd_bus_creds_get_euid(creds, &uid);
2351         if (r < 0)
2352                 return r;
2353
2354         r = have_multiple_sessions(m, uid);
2355         if (r < 0)
2356                 return r;
2357
2358         multiple_sessions = r > 0;
2359         blocked = manager_is_inhibited(m, w, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
2360
2361         handle = handle_action_from_string(sleep_verb);
2362         if (handle >= 0) {
2363                 const char *target;
2364
2365                 target = manager_target_for_action(handle);
2366                 if (target) {
2367                         _cleanup_free_ char *load_state = NULL;
2368
2369                         r = unit_load_state(m->bus, target, &load_state);
2370                         if (r < 0)
2371                                 return r;
2372
2373                         if (!streq(load_state, "loaded")) {
2374                                 result = "no";
2375                                 goto finish;
2376                         }
2377                 }
2378         }
2379
2380         if (multiple_sessions) {
2381                 r = bus_test_polkit(message, CAP_SYS_BOOT, action_multiple_sessions, NULL, UID_INVALID, &challenge, error);
2382                 if (r < 0)
2383                         return r;
2384
2385                 if (r > 0)
2386                         result = "yes";
2387                 else if (challenge)
2388                         result = "challenge";
2389                 else
2390                         result = "no";
2391         }
2392
2393         if (blocked) {
2394                 r = bus_test_polkit(message, CAP_SYS_BOOT, action_ignore_inhibit, NULL, UID_INVALID, &challenge, error);
2395                 if (r < 0)
2396                         return r;
2397
2398                 if (r > 0) {
2399                         if (!result)
2400                                 result = "yes";
2401                 } else if (challenge) {
2402                         if (!result || streq(result, "yes"))
2403                                 result = "challenge";
2404                 } else
2405                         result = "no";
2406         }
2407
2408         if (!multiple_sessions && !blocked) {
2409                 /* If neither inhibit nor multiple sessions
2410                  * apply then just check the normal policy */
2411
2412                 r = bus_test_polkit(message, CAP_SYS_BOOT, action, NULL, UID_INVALID, &challenge, error);
2413                 if (r < 0)
2414                         return r;
2415
2416                 if (r > 0)
2417                         result = "yes";
2418                 else if (challenge)
2419                         result = "challenge";
2420                 else
2421                         result = "no";
2422         }
2423
2424  finish:
2425         return sd_bus_reply_method_return(message, "s", result);
2426 }
2427
2428 static int method_can_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2429         Manager *m = userdata;
2430
2431         return method_can_shutdown_or_sleep(
2432                         m, message,
2433                         INHIBIT_SHUTDOWN,
2434                         "org.freedesktop.login1.power-off",
2435                         "org.freedesktop.login1.power-off-multiple-sessions",
2436                         "org.freedesktop.login1.power-off-ignore-inhibit",
2437                         NULL,
2438                         error);
2439 }
2440
2441 static int method_can_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2442         Manager *m = userdata;
2443
2444         return method_can_shutdown_or_sleep(
2445                         m, message,
2446                         INHIBIT_SHUTDOWN,
2447                         "org.freedesktop.login1.reboot",
2448                         "org.freedesktop.login1.reboot-multiple-sessions",
2449                         "org.freedesktop.login1.reboot-ignore-inhibit",
2450                         NULL,
2451                         error);
2452 }
2453
2454 static int method_can_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2455         Manager *m = userdata;
2456
2457         return method_can_shutdown_or_sleep(
2458                         m, message,
2459                         INHIBIT_SHUTDOWN,
2460                         "org.freedesktop.login1.halt",
2461                         "org.freedesktop.login1.halt-multiple-sessions",
2462                         "org.freedesktop.login1.halt-ignore-inhibit",
2463                         NULL,
2464                         error);
2465 }
2466
2467 static int method_can_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2468         Manager *m = userdata;
2469
2470         return method_can_shutdown_or_sleep(
2471                         m, message,
2472                         INHIBIT_SLEEP,
2473                         "org.freedesktop.login1.suspend",
2474                         "org.freedesktop.login1.suspend-multiple-sessions",
2475                         "org.freedesktop.login1.suspend-ignore-inhibit",
2476                         "suspend",
2477                         error);
2478 }
2479
2480 static int method_can_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2481         Manager *m = userdata;
2482
2483         return method_can_shutdown_or_sleep(
2484                         m, message,
2485                         INHIBIT_SLEEP,
2486                         "org.freedesktop.login1.hibernate",
2487                         "org.freedesktop.login1.hibernate-multiple-sessions",
2488                         "org.freedesktop.login1.hibernate-ignore-inhibit",
2489                         "hibernate",
2490                         error);
2491 }
2492
2493 static int method_can_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2494         Manager *m = userdata;
2495
2496         return method_can_shutdown_or_sleep(
2497                         m, message,
2498                         INHIBIT_SLEEP,
2499                         "org.freedesktop.login1.hibernate",
2500                         "org.freedesktop.login1.hibernate-multiple-sessions",
2501                         "org.freedesktop.login1.hibernate-ignore-inhibit",
2502                         "hybrid-sleep",
2503                         error);
2504 }
2505
2506 static int method_can_suspend_then_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2507         Manager *m = userdata;
2508
2509         return method_can_shutdown_or_sleep(
2510                         m, message,
2511                         INHIBIT_SLEEP,
2512                         "org.freedesktop.login1.hibernate",
2513                         "org.freedesktop.login1.hibernate-multiple-sessions",
2514                         "org.freedesktop.login1.hibernate-ignore-inhibit",
2515                         "suspend-then-hibernate",
2516                         error);
2517 }
2518
2519 static int property_get_reboot_parameter(
2520                 sd_bus *bus,
2521                 const char *path,
2522                 const char *interface,
2523                 const char *property,
2524                 sd_bus_message *reply,
2525                 void *userdata,
2526                 sd_bus_error *error) {
2527         _cleanup_free_ char *parameter = NULL;
2528         int r;
2529
2530         assert(bus);
2531         assert(reply);
2532         assert(userdata);
2533
2534         r = read_reboot_parameter(&parameter);
2535         if (r < 0)
2536                 return r;
2537
2538         return sd_bus_message_append(reply, "s", parameter);
2539 }
2540
2541 static int method_set_reboot_parameter(
2542                 sd_bus_message *message,
2543                 void *userdata,
2544                 sd_bus_error *error) {
2545
2546         Manager *m = userdata;
2547         const char *arg;
2548         int r;
2549
2550         assert(message);
2551         assert(m);
2552
2553         r = sd_bus_message_read(message, "s", &arg);
2554         if (r < 0)
2555                 return r;
2556
2557         r = detect_container();
2558         if (r < 0)
2559                 return r;
2560         if (r > 0)
2561                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED,
2562                                          "Reboot parameter not supported in containers, refusing.");
2563
2564         r = bus_verify_polkit_async(message,
2565                                     CAP_SYS_ADMIN,
2566                                     "org.freedesktop.login1.set-reboot-parameter",
2567                                     NULL,
2568                                     false,
2569                                     UID_INVALID,
2570                                     &m->polkit_registry,
2571                                     error);
2572         if (r < 0)
2573                 return r;
2574         if (r == 0)
2575                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2576
2577         r = update_reboot_parameter_and_warn(arg, false);
2578         if (r < 0)
2579                 return r;
2580
2581         return sd_bus_reply_method_return(message, NULL);
2582 }
2583
2584 static int method_can_reboot_parameter(
2585                 sd_bus_message *message,
2586                 void *userdata,
2587                 sd_bus_error *error) {
2588
2589         _unused_ Manager *m = userdata;
2590         int r;
2591
2592         assert(message);
2593         assert(m);
2594
2595         r = detect_container();
2596         if (r < 0)
2597                 return r;
2598         if (r > 0) /* Inside containers, specifying a reboot parameter, doesn't make much sense */
2599                 return sd_bus_reply_method_return(message, "s", "na");
2600
2601         return return_test_polkit(
2602                         message,
2603                         CAP_SYS_ADMIN,
2604                         "org.freedesktop.login1.set-reboot-parameter",
2605                         NULL,
2606                         UID_INVALID,
2607                         error);
2608 }
2609
2610 static int property_get_reboot_to_firmware_setup(
2611                 sd_bus *bus,
2612                 const char *path,
2613                 const char *interface,
2614                 const char *property,
2615                 sd_bus_message *reply,
2616                 void *userdata,
2617                 sd_bus_error *error) {
2618         int r;
2619
2620         assert(bus);
2621         assert(reply);
2622         assert(userdata);
2623
2624         r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
2625         if (r == -ENXIO) {
2626                 /* EFI case: let's see what is currently configured in the EFI variables */
2627                 r = efi_get_reboot_to_firmware();
2628                 if (r < 0 && r != -EOPNOTSUPP)
2629                         log_warning_errno(r, "Failed to determine reboot-to-firmware-setup state: %m");
2630         } else if (r < 0)
2631                 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
2632         else if (r > 0) {
2633                 /* Non-EFI case: let's see whether /run/systemd/reboot-to-firmware-setup exists. */
2634                 if (access("/run/systemd/reboot-to-firmware-setup", F_OK) < 0) {
2635                         if (errno != ENOENT)
2636                                 log_warning_errno(errno, "Failed to check whether /run/systemd/reboot-to-firmware-setup exists: %m");
2637
2638                         r = false;
2639                 } else
2640                         r = true;
2641         }
2642
2643         return sd_bus_message_append(reply, "b", r > 0);
2644 }
2645
2646 static int method_set_reboot_to_firmware_setup(
2647                 sd_bus_message *message,
2648                 void *userdata,
2649                 sd_bus_error *error) {
2650
2651         Manager *m = userdata;
2652         bool use_efi;
2653         int b, r;
2654
2655         assert(message);
2656         assert(m);
2657
2658         r = sd_bus_message_read(message, "b", &b);
2659         if (r < 0)
2660                 return r;
2661
2662         r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
2663         if (r == -ENXIO) {
2664                 /* EFI case: let's see what the firmware supports */
2665
2666                 r = efi_reboot_to_firmware_supported();
2667                 if (r == -EOPNOTSUPP)
2668                         return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Firmware does not support boot into firmware.");
2669                 if (r < 0)
2670                         return r;
2671
2672                 use_efi = true;
2673
2674         } else if (r <= 0) {
2675                 /* non-EFI case: $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP is set to off */
2676
2677                 if (r < 0)
2678                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
2679
2680                 return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Firmware does not support boot into firmware.");
2681         } else
2682                 /* non-EFI case: $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP is set to on */
2683                 use_efi = false;
2684
2685         r = bus_verify_polkit_async(message,
2686                                     CAP_SYS_ADMIN,
2687                                     "org.freedesktop.login1.set-reboot-to-firmware-setup",
2688                                     NULL,
2689                                     false,
2690                                     UID_INVALID,
2691                                     &m->polkit_registry,
2692                                     error);
2693         if (r < 0)
2694                 return r;
2695         if (r == 0)
2696                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2697
2698         if (use_efi) {
2699                 r = efi_set_reboot_to_firmware(b);
2700                 if (r < 0)
2701                         return r;
2702         } else {
2703                 if (b) {
2704                         r = touch("/run/systemd/reboot-to-firmware-setup");
2705                         if (r < 0)
2706                                 return r;
2707                 } else {
2708                         if (unlink("/run/systemd/reboot-to-firmware-setup") < 0 && errno != ENOENT)
2709                                 return -errno;
2710                 }
2711         }
2712
2713         return sd_bus_reply_method_return(message, NULL);
2714 }
2715
2716 static int method_can_reboot_to_firmware_setup(
2717                 sd_bus_message *message,
2718                 void *userdata,
2719                 sd_bus_error *error) {
2720
2721         _unused_ Manager *m = userdata;
2722         int r;
2723
2724         assert(message);
2725         assert(m);
2726
2727         r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
2728         if (r == -ENXIO) {
2729                 /* EFI case: let's see what the firmware supports */
2730
2731                 r = efi_reboot_to_firmware_supported();
2732                 if (r < 0) {
2733                         if (r != -EOPNOTSUPP)
2734                                 log_warning_errno(r, "Failed to determine whether reboot to firmware is supported: %m");
2735
2736                         return sd_bus_reply_method_return(message, "s", "na");
2737                 }
2738
2739         } else if (r <= 0) {
2740                 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP */
2741
2742                 if (r < 0)
2743                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
2744
2745                 return sd_bus_reply_method_return(message, "s", "na");
2746         }
2747
2748         return return_test_polkit(
2749                         message,
2750                         CAP_SYS_ADMIN,
2751                         "org.freedesktop.login1.set-reboot-to-firmware-setup",
2752                         NULL,
2753                         UID_INVALID,
2754                         error);
2755 }
2756
2757 static int property_get_reboot_to_boot_loader_menu(
2758                 sd_bus *bus,
2759                 const char *path,
2760                 const char *interface,
2761                 const char *property,
2762                 sd_bus_message *reply,
2763                 void *userdata,
2764                 sd_bus_error *error) {
2765
2766         uint64_t x = UINT64_MAX;
2767         int r;
2768
2769         assert(bus);
2770         assert(reply);
2771         assert(userdata);
2772
2773         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
2774         if (r == -ENXIO) {
2775                 /* EFI case: returns the current value of LoaderConfigTimeoutOneShot. Three cases are distuingished:
2776                  *
2777                  *     1. Variable not set, boot into boot loader menu is not enabled (we return UINT64_MAX to the user)
2778                  *     2. Variable set to "0", boot into boot loader menu is enabled with no timeout (we return 0 to the user)
2779                  *     3. Variable set to numeric value formatted in ASCII, boot into boot loader menu with the specified timeout in seconds
2780                  */
2781
2782                 r = efi_loader_get_config_timeout_one_shot(&x);
2783                 if (r < 0) {
2784                         if (r != -ENOENT)
2785                                 log_warning_errno(r, "Failed to read LoaderConfigTimeoutOneShot variable, ignoring: %m");
2786                 }
2787
2788         } else if (r < 0)
2789                 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
2790         else if (r > 0) {
2791                 _cleanup_free_ char *v = NULL;
2792
2793                 /* Non-EFI case, let's process /run/systemd/reboot-to-boot-loader-menu. */
2794
2795                 r = read_one_line_file("/run/systemd/reboot-to-boot-loader-menu", &v);
2796                 if (r < 0) {
2797                         if (r != -ENOENT)
2798                                 log_warning_errno(r, "Failed to read /run/systemd/reboot-to-boot-loader-menu: %m");
2799                 } else {
2800                         r = safe_atou64(v, &x);
2801                         if (r < 0)
2802                                 log_warning_errno(r, "Failed to parse /run/systemd/reboot-to-boot-loader-menu: %m");
2803                 }
2804         }
2805
2806         return sd_bus_message_append(reply, "t", x);
2807 }
2808
2809 static int method_set_reboot_to_boot_loader_menu(
2810                 sd_bus_message *message,
2811                 void *userdata,
2812                 sd_bus_error *error) {
2813
2814         Manager *m = userdata;
2815         bool use_efi;
2816         uint64_t x;
2817         int r;
2818
2819         assert(message);
2820         assert(m);
2821
2822         r = sd_bus_message_read(message, "t", &x);
2823         if (r < 0)
2824                 return r;
2825
2826         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
2827         if (r == -ENXIO) {
2828                 uint64_t features;
2829
2830                 /* EFI case: let's see if booting into boot loader menu is supported. */
2831
2832                 r = efi_loader_get_features(&features);
2833                 if (r < 0)
2834                         log_warning_errno(r, "Failed to determine whether reboot to boot loader menu is supported: %m");
2835                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT))
2836                         return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader does not support boot into boot loader menu.");
2837
2838                 use_efi = true;
2839
2840         } else if (r <= 0) {
2841                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU is set to off */
2842
2843                 if (r < 0)
2844                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
2845
2846                 return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader does not support boot into boot loader menu.");
2847         } else
2848                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU is set to on */
2849                 use_efi = false;
2850
2851         r = bus_verify_polkit_async(message,
2852                                     CAP_SYS_ADMIN,
2853                                     "org.freedesktop.login1.set-reboot-to-boot-loader-menu",
2854                                     NULL,
2855                                     false,
2856                                     UID_INVALID,
2857                                     &m->polkit_registry,
2858                                     error);
2859         if (r < 0)
2860                 return r;
2861         if (r == 0)
2862                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2863
2864         if (use_efi) {
2865                 if (x == UINT64_MAX)
2866                         r = efi_set_variable(EFI_VENDOR_LOADER, "LoaderConfigTimeoutOneShot", NULL, 0);
2867                 else {
2868                         char buf[DECIMAL_STR_MAX(uint64_t) + 1];
2869                         xsprintf(buf, "%" PRIu64, DIV_ROUND_UP(x, USEC_PER_SEC)); /* second granularity */
2870
2871                         r = efi_set_variable_string(EFI_VENDOR_LOADER, "LoaderConfigTimeoutOneShot", buf);
2872                 }
2873                 if (r < 0)
2874                         return r;
2875         } else {
2876                 if (x == UINT64_MAX) {
2877                         if (unlink("/run/systemd/reboot-to-boot-loader-menu") < 0 && errno != ENOENT)
2878                                 return -errno;
2879                 } else {
2880                         char buf[DECIMAL_STR_MAX(uint64_t) + 1];
2881
2882                         xsprintf(buf, "%" PRIu64, x); /* µs granularity */
2883
2884                         r = write_string_file_atomic_label("/run/systemd/reboot-to-boot-loader-menu", buf);
2885                         if (r < 0)
2886                                 return r;
2887                 }
2888         }
2889
2890         return sd_bus_reply_method_return(message, NULL);
2891 }
2892
2893 static int method_can_reboot_to_boot_loader_menu(
2894                 sd_bus_message *message,
2895                 void *userdata,
2896                 sd_bus_error *error) {
2897
2898         _unused_ Manager *m = userdata;
2899         int r;
2900
2901         assert(message);
2902         assert(m);
2903
2904         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
2905         if (r == -ENXIO) {
2906                 uint64_t features = 0;
2907
2908                 /* EFI case, let's see if booting into boot loader menu is supported. */
2909
2910                 r = efi_loader_get_features(&features);
2911                 if (r < 0)
2912                         log_warning_errno(r, "Failed to determine whether reboot to boot loader menu is supported: %m");
2913                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT))
2914                         return sd_bus_reply_method_return(message, "s", "na");
2915
2916         } else if (r <= 0) {
2917                 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU */
2918
2919                 if (r < 0)
2920                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
2921
2922                 return sd_bus_reply_method_return(message, "s", "na");
2923         }
2924
2925         return return_test_polkit(
2926                         message,
2927                         CAP_SYS_ADMIN,
2928                         "org.freedesktop.login1.set-reboot-to-boot-loader-menu",
2929                         NULL,
2930                         UID_INVALID,
2931                         error);
2932 }
2933
2934 static int property_get_reboot_to_boot_loader_entry(
2935                 sd_bus *bus,
2936                 const char *path,
2937                 const char *interface,
2938                 const char *property,
2939                 sd_bus_message *reply,
2940                 void *userdata,
2941                 sd_bus_error *error) {
2942
2943         _cleanup_free_ char *v = NULL;
2944         Manager *m = userdata;
2945         const char *x = NULL;
2946         int r;
2947
2948         assert(bus);
2949         assert(reply);
2950         assert(m);
2951
2952         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
2953         if (r == -ENXIO) {
2954                 /* EFI case: let's read the LoaderEntryOneShot variable */
2955
2956                 r = efi_loader_update_entry_one_shot_cache(&m->efi_loader_entry_one_shot, &m->efi_loader_entry_one_shot_stat);
2957                 if (r < 0) {
2958                         if (r != -ENOENT)
2959                                 log_warning_errno(r, "Failed to read LoaderEntryOneShot variable, ignoring: %m");
2960                 } else
2961                         x = m->efi_loader_entry_one_shot;
2962
2963         } else if (r < 0)
2964                 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
2965         else if (r > 0) {
2966
2967                 /* Non-EFI case, let's process /run/systemd/reboot-to-boot-loader-entry. */
2968
2969                 r = read_one_line_file("/run/systemd/reboot-to-boot-loader-entry", &v);
2970                 if (r < 0) {
2971                         if (r != -ENOENT)
2972                                 log_warning_errno(r, "Failed to read /run/systemd/reboot-to-boot-loader-entry, ignoring: %m");
2973                 } else if (!efi_loader_entry_name_valid(v))
2974                         log_warning("/run/systemd/reboot-to-boot-loader-entry is not valid, ignoring.");
2975                 else
2976                         x = v;
2977         }
2978
2979         return sd_bus_message_append(reply, "s", x);
2980 }
2981
2982 static int boot_loader_entry_exists(Manager *m, const char *id) {
2983         _cleanup_(boot_config_free) BootConfig config = {};
2984         int r;
2985
2986         assert(m);
2987         assert(id);
2988
2989         r = boot_entries_load_config_auto(NULL, NULL, &config);
2990         if (r < 0 && r != -ENOKEY) /* don't complain if no GPT is found, hence skip ENOKEY */
2991                 return r;
2992
2993         r = manager_read_efi_boot_loader_entries(m);
2994         if (r >= 0)
2995                 (void) boot_entries_augment_from_loader(&config, m->efi_boot_loader_entries, true);
2996
2997         return boot_config_has_entry(&config, id);
2998 }
2999
3000 static int method_set_reboot_to_boot_loader_entry(
3001                 sd_bus_message *message,
3002                 void *userdata,
3003                 sd_bus_error *error) {
3004
3005         Manager *m = userdata;
3006         bool use_efi;
3007         const char *v;
3008         int r;
3009
3010         assert(message);
3011         assert(m);
3012
3013         r = sd_bus_message_read(message, "s", &v);
3014         if (r < 0)
3015                 return r;
3016
3017         if (isempty(v))
3018                 v = NULL;
3019         else if (efi_loader_entry_name_valid(v)) {
3020                 r = boot_loader_entry_exists(m, v);
3021                 if (r < 0)
3022                         return r;
3023                 if (r == 0)
3024                         return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader entry '%s' is not known.", v);
3025         } else
3026                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Boot loader entry name '%s' is not valid, refusing.", v);
3027
3028         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
3029         if (r == -ENXIO) {
3030                 uint64_t features;
3031
3032                 /* EFI case: let's see if booting into boot loader entry is supported. */
3033
3034                 r = efi_loader_get_features(&features);
3035                 if (r < 0)
3036                         log_warning_errno(r, "Failed to determine whether reboot into boot loader entry is supported: %m");
3037                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_ENTRY_ONESHOT))
3038                         return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Loader does not support boot into boot loader entry.");
3039
3040                 use_efi = true;
3041
3042         } else if (r <= 0) {
3043                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY is set to off */
3044
3045                 if (r < 0)
3046                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
3047
3048                 return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Loader does not support boot into boot loader entry.");
3049         } else
3050                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY is set to on */
3051                 use_efi = false;
3052
3053         r = bus_verify_polkit_async(message,
3054                                     CAP_SYS_ADMIN,
3055                                     "org.freedesktop.login1.set-reboot-to-boot-loader-entry",
3056                                     NULL,
3057                                     false,
3058                                     UID_INVALID,
3059                                     &m->polkit_registry,
3060                                     error);
3061         if (r < 0)
3062                 return r;
3063         if (r == 0)
3064                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
3065
3066         if (use_efi) {
3067                 if (isempty(v))
3068                         /* Delete item */
3069                         r = efi_set_variable(EFI_VENDOR_LOADER, "LoaderEntryOneShot", NULL, 0);
3070                 else
3071                         r = efi_set_variable_string(EFI_VENDOR_LOADER, "LoaderEntryOneShot", v);
3072                 if (r < 0)
3073                         return r;
3074         } else {
3075                 if (isempty(v)) {
3076                         if (unlink("/run/systemd/reboot-to-boot-loader-entry") < 0 && errno != ENOENT)
3077                                 return -errno;
3078                 } else {
3079                         r = write_string_file_atomic_label("/run/systemd/reboot-boot-to-loader-entry", v);
3080                         if (r < 0)
3081                                 return r;
3082                 }
3083         }
3084
3085         return sd_bus_reply_method_return(message, NULL);
3086 }
3087
3088 static int method_can_reboot_to_boot_loader_entry(
3089                 sd_bus_message *message,
3090                 void *userdata,
3091                 sd_bus_error *error) {
3092
3093         _unused_ Manager *m = userdata;
3094         int r;
3095
3096         assert(message);
3097         assert(m);
3098
3099         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
3100         if (r == -ENXIO) {
3101                 uint64_t features = 0;
3102
3103                 /* EFI case, let's see if booting into boot loader entry is supported. */
3104
3105                 r = efi_loader_get_features(&features);
3106                 if (r < 0)
3107                         log_warning_errno(r, "Failed to determine whether reboot to boot loader entry is supported: %m");
3108                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_ENTRY_ONESHOT))
3109                         return sd_bus_reply_method_return(message, "s", "na");
3110
3111         } else if (r <= 0) {
3112                 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY */
3113
3114                 if (r < 0)
3115                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
3116
3117                 return sd_bus_reply_method_return(message, "s", "na");
3118         }
3119
3120         return return_test_polkit(
3121                         message,
3122                         CAP_SYS_ADMIN,
3123                         "org.freedesktop.login1.set-reboot-to-boot-loader-entry",
3124                         NULL,
3125                         UID_INVALID,
3126                         error);
3127 }
3128
3129 static int property_get_boot_loader_entries(
3130                 sd_bus *bus,
3131                 const char *path,
3132                 const char *interface,
3133                 const char *property,
3134                 sd_bus_message *reply,
3135                 void *userdata,
3136                 sd_bus_error *error) {
3137
3138         _cleanup_(boot_config_free) BootConfig config = {};
3139         Manager *m = userdata;
3140         size_t i;
3141         int r;
3142
3143         assert(bus);
3144         assert(reply);
3145         assert(m);
3146
3147         r = boot_entries_load_config_auto(NULL, NULL, &config);
3148         if (r < 0 && r != -ENOKEY) /* don't complain if there's no GPT found */
3149                 return r;
3150
3151         r = manager_read_efi_boot_loader_entries(m);
3152         if (r >= 0)
3153                 (void) boot_entries_augment_from_loader(&config, m->efi_boot_loader_entries, true);
3154
3155         r = sd_bus_message_open_container(reply, 'a', "s");
3156         if (r < 0)
3157                 return r;
3158
3159         for (i = 0; i < config.n_entries; i++) {
3160                 BootEntry *e = config.entries + i;
3161
3162                 r = sd_bus_message_append(reply, "s", e->id);
3163                 if (r < 0)
3164                         return r;
3165         }
3166
3167         return sd_bus_message_close_container(reply);
3168 }
3169
3170 static int method_set_wall_message(
3171                 sd_bus_message *message,
3172                 void *userdata,
3173                 sd_bus_error *error) {
3174
3175         int r;
3176         Manager *m = userdata;
3177         char *wall_message;
3178         unsigned enable_wall_messages;
3179
3180         assert(message);
3181         assert(m);
3182
3183         r = sd_bus_message_read(message, "sb", &wall_message, &enable_wall_messages);
3184         if (r < 0)
3185                 return r;
3186
3187         /* Short-circuit the operation if the desired state is already in place, to
3188          * avoid an unnecessary polkit permission check. */
3189         if (streq_ptr(m->wall_message, empty_to_null(wall_message)) &&
3190             m->enable_wall_messages == enable_wall_messages)
3191                 goto done;
3192
3193         r = bus_verify_polkit_async(message,
3194                                     CAP_SYS_ADMIN,
3195                                     "org.freedesktop.login1.set-wall-message",
3196                                     NULL,
3197                                     false,
3198                                     UID_INVALID,
3199                                     &m->polkit_registry,
3200                                     error);
3201         if (r < 0)
3202                 return r;
3203         if (r == 0)
3204                 return 1; /* Will call us back */
3205
3206         r = free_and_strdup(&m->wall_message, empty_to_null(wall_message));
3207         if (r < 0)
3208                 return log_oom();
3209
3210         m->enable_wall_messages = enable_wall_messages;
3211
3212  done:
3213         return sd_bus_reply_method_return(message, NULL);
3214 }
3215
3216 static int method_inhibit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3217         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
3218         const char *who, *why, *what, *mode;
3219         _cleanup_free_ char *id = NULL;
3220         _cleanup_close_ int fifo_fd = -1;
3221         Manager *m = userdata;
3222         InhibitMode mm;
3223         InhibitWhat w;
3224         pid_t pid;
3225         uid_t uid;
3226         int r;
3227
3228         assert(message);
3229         assert(m);
3230
3231         r = sd_bus_message_read(message, "ssss", &what, &who, &why, &mode);
3232         if (r < 0)
3233                 return r;
3234
3235         w = inhibit_what_from_string(what);
3236         if (w <= 0)
3237                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3238                                          "Invalid what specification %s", what);
3239
3240         mm = inhibit_mode_from_string(mode);
3241         if (mm < 0)
3242                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3243                                          "Invalid mode specification %s", mode);
3244
3245         /* Delay is only supported for shutdown/sleep */
3246         if (mm == INHIBIT_DELAY && (w & ~(INHIBIT_SHUTDOWN|INHIBIT_SLEEP)))
3247                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3248                                          "Delay inhibitors only supported for shutdown and sleep");
3249
3250         /* Don't allow taking delay locks while we are already
3251          * executing the operation. We shouldn't create the impression
3252          * that the lock was successful if the machine is about to go
3253          * down/suspend any moment. */
3254         if (m->action_what & w)
3255                 return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS,
3256                                          "The operation inhibition has been requested for is already running");
3257
3258         r = bus_verify_polkit_async(
3259                         message,
3260                         CAP_SYS_BOOT,
3261                         w == INHIBIT_SHUTDOWN             ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-shutdown" : "org.freedesktop.login1.inhibit-delay-shutdown") :
3262                         w == INHIBIT_SLEEP                ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-sleep"    : "org.freedesktop.login1.inhibit-delay-sleep") :
3263                         w == INHIBIT_IDLE                 ? "org.freedesktop.login1.inhibit-block-idle" :
3264                         w == INHIBIT_HANDLE_POWER_KEY     ? "org.freedesktop.login1.inhibit-handle-power-key" :
3265                         w == INHIBIT_HANDLE_SUSPEND_KEY   ? "org.freedesktop.login1.inhibit-handle-suspend-key" :
3266                         w == INHIBIT_HANDLE_REBOOT_KEY    ? "org.freedesktop.login1.inhibit-handle-reboot-key" :
3267                         w == INHIBIT_HANDLE_HIBERNATE_KEY ? "org.freedesktop.login1.inhibit-handle-hibernate-key" :
3268                                                             "org.freedesktop.login1.inhibit-handle-lid-switch",
3269                         NULL,
3270                         false,
3271                         UID_INVALID,
3272                         &m->polkit_registry,
3273                         error);
3274         if (r < 0)
3275                 return r;
3276         if (r == 0)
3277                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
3278
3279         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID|SD_BUS_CREDS_PID, &creds);
3280         if (r < 0)
3281                 return r;
3282
3283         r = sd_bus_creds_get_euid(creds, &uid);
3284         if (r < 0)
3285                 return r;
3286
3287         r = sd_bus_creds_get_pid(creds, &pid);
3288         if (r < 0)
3289                 return r;
3290
3291         if (hashmap_size(m->inhibitors) >= m->inhibitors_max)
3292                 return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED,
3293                                          "Maximum number of inhibitors (%" PRIu64 ") reached, refusing further inhibitors.",
3294                                          m->inhibitors_max);
3295
3296         do {
3297                 id = mfree(id);
3298
3299                 if (asprintf(&id, "%lu", ++m->inhibit_counter) < 0)
3300                         return -ENOMEM;
3301
3302         } while (hashmap_get(m->inhibitors, id));
3303
3304         _cleanup_(inhibitor_freep) Inhibitor *i = NULL;
3305         r = manager_add_inhibitor(m, id, &i);
3306         if (r < 0)
3307                 return r;
3308
3309         i->what = w;
3310         i->mode = mm;
3311         i->pid = pid;
3312         i->uid = uid;
3313         i->why = strdup(why);
3314         i->who = strdup(who);
3315
3316         if (!i->why || !i->who)
3317                 return -ENOMEM;
3318
3319         fifo_fd = inhibitor_create_fifo(i);
3320         if (fifo_fd < 0)
3321                 return fifo_fd;
3322
3323         r = inhibitor_start(i);
3324         if (r < 0)
3325                 return r;
3326         TAKE_PTR(i);
3327
3328         return sd_bus_reply_method_return(message, "h", fifo_fd);
3329 }
3330
3331 static const sd_bus_vtable manager_vtable[] = {
3332         SD_BUS_VTABLE_START(0),
3333
3334         SD_BUS_WRITABLE_PROPERTY("EnableWallMessages", "b", NULL, NULL, offsetof(Manager, enable_wall_messages), 0),
3335         SD_BUS_WRITABLE_PROPERTY("WallMessage", "s", NULL, NULL, offsetof(Manager, wall_message), 0),
3336
3337         SD_BUS_PROPERTY("NAutoVTs", "u", NULL, offsetof(Manager, n_autovts), SD_BUS_VTABLE_PROPERTY_CONST),
3338         SD_BUS_PROPERTY("KillOnlyUsers", "as", NULL, offsetof(Manager, kill_only_users), SD_BUS_VTABLE_PROPERTY_CONST),
3339         SD_BUS_PROPERTY("KillExcludeUsers", "as", NULL, offsetof(Manager, kill_exclude_users), SD_BUS_VTABLE_PROPERTY_CONST),
3340         SD_BUS_PROPERTY("KillUserProcesses", "b", NULL, offsetof(Manager, kill_user_processes), SD_BUS_VTABLE_PROPERTY_CONST),
3341         SD_BUS_PROPERTY("RebootParameter", "s", property_get_reboot_parameter, 0, 0),
3342         SD_BUS_PROPERTY("RebootToFirmwareSetup", "b", property_get_reboot_to_firmware_setup, 0, 0),
3343         SD_BUS_PROPERTY("RebootToBootLoaderMenu", "t", property_get_reboot_to_boot_loader_menu, 0, 0),
3344         SD_BUS_PROPERTY("RebootToBootLoaderEntry", "s", property_get_reboot_to_boot_loader_entry, 0, 0),
3345         SD_BUS_PROPERTY("BootLoaderEntries", "as", property_get_boot_loader_entries, 0, SD_BUS_VTABLE_PROPERTY_CONST),
3346         SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3347         SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3348         SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3349         SD_BUS_PROPERTY("BlockInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3350         SD_BUS_PROPERTY("DelayInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3351         SD_BUS_PROPERTY("InhibitDelayMaxUSec", "t", NULL, offsetof(Manager, inhibit_delay_max), SD_BUS_VTABLE_PROPERTY_CONST),
3352         SD_BUS_PROPERTY("UserStopDelayUSec", "t", NULL, offsetof(Manager, user_stop_delay), SD_BUS_VTABLE_PROPERTY_CONST),
3353         SD_BUS_PROPERTY("HandlePowerKey", "s", property_get_handle_action, offsetof(Manager, handle_power_key), SD_BUS_VTABLE_PROPERTY_CONST),
3354         SD_BUS_PROPERTY("HandleSuspendKey", "s", property_get_handle_action, offsetof(Manager, handle_suspend_key), SD_BUS_VTABLE_PROPERTY_CONST),
3355         SD_BUS_PROPERTY("HandleHibernateKey", "s", property_get_handle_action, offsetof(Manager, handle_hibernate_key), SD_BUS_VTABLE_PROPERTY_CONST),
3356         SD_BUS_PROPERTY("HandleLidSwitch", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch), SD_BUS_VTABLE_PROPERTY_CONST),
3357         SD_BUS_PROPERTY("HandleLidSwitchExternalPower", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch_ep), SD_BUS_VTABLE_PROPERTY_CONST),
3358         SD_BUS_PROPERTY("HandleLidSwitchDocked", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch_docked), SD_BUS_VTABLE_PROPERTY_CONST),
3359         SD_BUS_PROPERTY("HoldoffTimeoutUSec", "t", NULL, offsetof(Manager, holdoff_timeout_usec), SD_BUS_VTABLE_PROPERTY_CONST),
3360         SD_BUS_PROPERTY("IdleAction", "s", property_get_handle_action, offsetof(Manager, idle_action), SD_BUS_VTABLE_PROPERTY_CONST),
3361         SD_BUS_PROPERTY("IdleActionUSec", "t", NULL, offsetof(Manager, idle_action_usec), SD_BUS_VTABLE_PROPERTY_CONST),
3362         SD_BUS_PROPERTY("PreparingForShutdown", "b", property_get_preparing, 0, 0),
3363         SD_BUS_PROPERTY("PreparingForSleep", "b", property_get_preparing, 0, 0),
3364         SD_BUS_PROPERTY("ScheduledShutdown", "(st)", property_get_scheduled_shutdown, 0, 0),
3365         SD_BUS_PROPERTY("Docked", "b", property_get_docked, 0, 0),
3366         SD_BUS_PROPERTY("LidClosed", "b", property_get_lid_closed, 0, 0),
3367         SD_BUS_PROPERTY("OnExternalPower", "b", property_get_on_external_power, 0, 0),
3368         SD_BUS_PROPERTY("RemoveIPC", "b", bus_property_get_bool, offsetof(Manager, remove_ipc), SD_BUS_VTABLE_PROPERTY_CONST),
3369         SD_BUS_PROPERTY("RuntimeDirectorySize", "t", NULL, offsetof(Manager, runtime_dir_size), SD_BUS_VTABLE_PROPERTY_CONST),
3370         SD_BUS_PROPERTY("RuntimeDirectoryInodesMax", "t", NULL, offsetof(Manager, runtime_dir_inodes), SD_BUS_VTABLE_PROPERTY_CONST),
3371         SD_BUS_PROPERTY("InhibitorsMax", "t", NULL, offsetof(Manager, inhibitors_max), SD_BUS_VTABLE_PROPERTY_CONST),
3372         SD_BUS_PROPERTY("NCurrentInhibitors", "t", property_get_hashmap_size, offsetof(Manager, inhibitors), 0),
3373         SD_BUS_PROPERTY("SessionsMax", "t", NULL, offsetof(Manager, sessions_max), SD_BUS_VTABLE_PROPERTY_CONST),
3374         SD_BUS_PROPERTY("NCurrentSessions", "t", property_get_hashmap_size, offsetof(Manager, sessions), 0),
3375         SD_BUS_PROPERTY("UserTasksMax", "t", property_get_compat_user_tasks_max, 0, SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
3376
3377         SD_BUS_METHOD_WITH_NAMES("GetSession",
3378                                  "s",
3379                                  SD_BUS_PARAM(session_id),
3380                                  "o",
3381                                  SD_BUS_PARAM(object_path),
3382                                  method_get_session,
3383                                  SD_BUS_VTABLE_UNPRIVILEGED),
3384         SD_BUS_METHOD_WITH_NAMES("GetSessionByPID",
3385                                  "u",
3386                                  SD_BUS_PARAM(pid),
3387                                  "o",
3388                                  SD_BUS_PARAM(object_path),
3389                                  method_get_session_by_pid,
3390                                  SD_BUS_VTABLE_UNPRIVILEGED),
3391         SD_BUS_METHOD_WITH_NAMES("GetUser",
3392                                  "u",
3393                                  SD_BUS_PARAM(uid),
3394                                  "o",
3395                                  SD_BUS_PARAM(object_path),
3396                                  method_get_user,
3397                                  SD_BUS_VTABLE_UNPRIVILEGED),
3398         SD_BUS_METHOD_WITH_NAMES("GetUserByPID",
3399                                  "u",
3400                                  SD_BUS_PARAM(pid),
3401                                  "o",
3402                                  SD_BUS_PARAM(object_path),
3403                                  method_get_user_by_pid,
3404                                  SD_BUS_VTABLE_UNPRIVILEGED),
3405         SD_BUS_METHOD_WITH_NAMES("GetSeat",
3406                                  "s",
3407                                  SD_BUS_PARAM(seat_id),
3408                                  "o",
3409                                  SD_BUS_PARAM(object_path),
3410                                  method_get_seat,
3411                                  SD_BUS_VTABLE_UNPRIVILEGED),
3412         SD_BUS_METHOD_WITH_NAMES("ListSessions",
3413                                  NULL,,
3414                                  "a(susso)",
3415                                  SD_BUS_PARAM(sessions),
3416                                  method_list_sessions,
3417                                  SD_BUS_VTABLE_UNPRIVILEGED),
3418         SD_BUS_METHOD_WITH_NAMES("ListUsers",
3419                                  NULL,,
3420                                  "a(uso)",
3421                                  SD_BUS_PARAM(users),
3422                                  method_list_users,
3423                                  SD_BUS_VTABLE_UNPRIVILEGED),
3424         SD_BUS_METHOD_WITH_NAMES("ListSeats",
3425                                  NULL,,
3426                                  "a(so)",
3427                                  SD_BUS_PARAM(seats),
3428                                  method_list_seats,
3429                                  SD_BUS_VTABLE_UNPRIVILEGED),
3430         SD_BUS_METHOD_WITH_NAMES("ListInhibitors",
3431                                  NULL,,
3432                                  "a(ssssuu)",
3433                                  SD_BUS_PARAM(inhibitors),
3434                                  method_list_inhibitors,
3435                                  SD_BUS_VTABLE_UNPRIVILEGED),
3436         SD_BUS_METHOD_WITH_NAMES("CreateSession",
3437                                  "uusssssussbssa(sv)",
3438                                  SD_BUS_PARAM(uid)
3439                                  SD_BUS_PARAM(pid)
3440                                  SD_BUS_PARAM(service)
3441                                  SD_BUS_PARAM(type)
3442                                  SD_BUS_PARAM(class)
3443                                  SD_BUS_PARAM(desktop)
3444                                  SD_BUS_PARAM(seat_id)
3445                                  SD_BUS_PARAM(vtnr)
3446                                  SD_BUS_PARAM(tty)
3447                                  SD_BUS_PARAM(display)
3448                                  SD_BUS_PARAM(remote)
3449                                  SD_BUS_PARAM(remote_user)
3450                                  SD_BUS_PARAM(remote_host)
3451                                  SD_BUS_PARAM(properties),
3452                                  "soshusub",
3453                                  SD_BUS_PARAM(session_id)
3454                                  SD_BUS_PARAM(object_path)
3455                                  SD_BUS_PARAM(runtime_path)
3456                                  SD_BUS_PARAM(fifo_fd)
3457                                  SD_BUS_PARAM(uid)
3458                                  SD_BUS_PARAM(seat_id)
3459                                  SD_BUS_PARAM(vtnr)
3460                                  SD_BUS_PARAM(existing),
3461                                  method_create_session,
3462                                  0),
3463         SD_BUS_METHOD_WITH_NAMES("ReleaseSession",
3464                                  "s",
3465                                  SD_BUS_PARAM(session_id),
3466                                  NULL,,
3467                                  method_release_session,
3468                                  0),
3469         SD_BUS_METHOD_WITH_NAMES("ActivateSession",
3470                                  "s",
3471                                  SD_BUS_PARAM(session_id),
3472                                  NULL,,
3473                                  method_activate_session,
3474                                  SD_BUS_VTABLE_UNPRIVILEGED),
3475         SD_BUS_METHOD_WITH_NAMES("ActivateSessionOnSeat",
3476                                  "ss",
3477                                  SD_BUS_PARAM(session_id)
3478                                  SD_BUS_PARAM(seat_id),
3479                                  NULL,,
3480                                  method_activate_session_on_seat,
3481                                  SD_BUS_VTABLE_UNPRIVILEGED),
3482         SD_BUS_METHOD_WITH_NAMES("LockSession",
3483                                  "s",
3484                                  SD_BUS_PARAM(session_id),
3485                                  NULL,,
3486                                  method_lock_session,
3487                                  SD_BUS_VTABLE_UNPRIVILEGED),
3488         SD_BUS_METHOD_WITH_NAMES("UnlockSession",
3489                                  "s",
3490                                  SD_BUS_PARAM(session_id),
3491                                  NULL,,
3492                                  method_lock_session,
3493                                  SD_BUS_VTABLE_UNPRIVILEGED),
3494         SD_BUS_METHOD("LockSessions",
3495                       NULL,
3496                       NULL,
3497                       method_lock_sessions,
3498                       SD_BUS_VTABLE_UNPRIVILEGED),
3499         SD_BUS_METHOD("UnlockSessions",
3500                       NULL,
3501                       NULL,
3502                       method_lock_sessions,
3503                       SD_BUS_VTABLE_UNPRIVILEGED),
3504         SD_BUS_METHOD_WITH_NAMES("KillSession",
3505                                  "ssi",
3506                                  SD_BUS_PARAM(session_id)
3507                                  SD_BUS_PARAM(who)
3508                                  SD_BUS_PARAM(signal_number),
3509                                  NULL,,
3510                                  method_kill_session,
3511                                  SD_BUS_VTABLE_UNPRIVILEGED),
3512         SD_BUS_METHOD_WITH_NAMES("KillUser",
3513                                  "ui",
3514                                  SD_BUS_PARAM(uid)
3515                                  SD_BUS_PARAM(signal_number),
3516                                  NULL,,
3517                                  method_kill_user,
3518                                  SD_BUS_VTABLE_UNPRIVILEGED),
3519         SD_BUS_METHOD_WITH_NAMES("TerminateSession",
3520                                  "s",
3521                                  SD_BUS_PARAM(session_id),
3522                                  NULL,,
3523                                  method_terminate_session,
3524                                  SD_BUS_VTABLE_UNPRIVILEGED),
3525         SD_BUS_METHOD_WITH_NAMES("TerminateUser",
3526                                  "u",
3527                                  SD_BUS_PARAM(uid),
3528                                  NULL,,
3529                                  method_terminate_user,
3530                                  SD_BUS_VTABLE_UNPRIVILEGED),
3531         SD_BUS_METHOD_WITH_NAMES("TerminateSeat",
3532                                  "s",
3533                                  SD_BUS_PARAM(seat_id),
3534                                  NULL,,
3535                                  method_terminate_seat,
3536                                  SD_BUS_VTABLE_UNPRIVILEGED),
3537         SD_BUS_METHOD_WITH_NAMES("SetUserLinger",
3538                                  "ubb",
3539                                  SD_BUS_PARAM(uid)
3540                                  SD_BUS_PARAM(enable)
3541                                  SD_BUS_PARAM(interactive),
3542                                  NULL,,
3543                                  method_set_user_linger,
3544                                  SD_BUS_VTABLE_UNPRIVILEGED),
3545         SD_BUS_METHOD_WITH_NAMES("AttachDevice",
3546                                  "ssb",
3547                                  SD_BUS_PARAM(seat_id)
3548                                  SD_BUS_PARAM(sysfs_path)
3549                                  SD_BUS_PARAM(interactive),
3550                                  NULL,,
3551                                  method_attach_device,
3552                                  SD_BUS_VTABLE_UNPRIVILEGED),
3553         SD_BUS_METHOD_WITH_NAMES("FlushDevices",
3554                                  "b",
3555                                  SD_BUS_PARAM(interactive),
3556                                  NULL,,
3557                                  method_flush_devices,
3558                                  SD_BUS_VTABLE_UNPRIVILEGED),
3559         SD_BUS_METHOD_WITH_NAMES("PowerOff",
3560                                  "b",
3561                                  SD_BUS_PARAM(interactive),
3562                                  NULL,,
3563                                  method_poweroff,
3564                                  SD_BUS_VTABLE_UNPRIVILEGED),
3565         SD_BUS_METHOD_WITH_NAMES("PowerOffWithFlags",
3566                                  "t",
3567                                  SD_BUS_PARAM(flags),
3568                                  NULL,,
3569                                  method_poweroff,
3570                                  SD_BUS_VTABLE_UNPRIVILEGED),
3571         SD_BUS_METHOD_WITH_NAMES("Reboot",
3572                                  "b",
3573                                  SD_BUS_PARAM(interactive),
3574                                  NULL,,
3575                                  method_reboot,
3576                                  SD_BUS_VTABLE_UNPRIVILEGED),
3577         SD_BUS_METHOD_WITH_NAMES("RebootWithFlags",
3578                                  "t",
3579                                  SD_BUS_PARAM(flags),
3580                                  NULL,,
3581                                  method_reboot,
3582                                  SD_BUS_VTABLE_UNPRIVILEGED),
3583         SD_BUS_METHOD_WITH_NAMES("Halt",
3584                                  "b",
3585                                  SD_BUS_PARAM(interactive),
3586                                  NULL,,
3587                                  method_halt,
3588                                  SD_BUS_VTABLE_UNPRIVILEGED),
3589         SD_BUS_METHOD_WITH_NAMES("HaltWithFlags",
3590                                  "t",
3591                                  SD_BUS_PARAM(flags),
3592                                  NULL,,
3593                                  method_halt,
3594                                  SD_BUS_VTABLE_UNPRIVILEGED),
3595         SD_BUS_METHOD_WITH_NAMES("Suspend",
3596                                  "b",
3597                                  SD_BUS_PARAM(interactive),
3598                                  NULL,,
3599                                  method_suspend,
3600                                  SD_BUS_VTABLE_UNPRIVILEGED),
3601         SD_BUS_METHOD_WITH_NAMES("SuspendWithFlags",
3602                                  "t",
3603                                  SD_BUS_PARAM(flags),
3604                                  NULL,,
3605                                  method_suspend,
3606                                  SD_BUS_VTABLE_UNPRIVILEGED),
3607         SD_BUS_METHOD_WITH_NAMES("Hibernate",
3608                                  "b",
3609                                  SD_BUS_PARAM(interactive),
3610                                  NULL,,
3611                                  method_hibernate,
3612                                  SD_BUS_VTABLE_UNPRIVILEGED),
3613         SD_BUS_METHOD_WITH_NAMES("HibernateWithFlags",
3614                                  "t",
3615                                  SD_BUS_PARAM(flags),
3616                                  NULL,,
3617                                  method_hibernate,
3618                                  SD_BUS_VTABLE_UNPRIVILEGED),
3619         SD_BUS_METHOD_WITH_NAMES("HybridSleep",
3620                                  "b",
3621                                  SD_BUS_PARAM(interactive),
3622                                  NULL,,
3623                                  method_hybrid_sleep,
3624                                  SD_BUS_VTABLE_UNPRIVILEGED),
3625         SD_BUS_METHOD_WITH_NAMES("HybridSleepWithFlags",
3626                                  "t",
3627                                  SD_BUS_PARAM(flags),
3628                                  NULL,,
3629                                  method_hybrid_sleep,
3630                                  SD_BUS_VTABLE_UNPRIVILEGED),
3631         SD_BUS_METHOD_WITH_NAMES("SuspendThenHibernate",
3632                                  "b",
3633                                  SD_BUS_PARAM(interactive),
3634                                  NULL,,
3635                                  method_suspend_then_hibernate,
3636                                  SD_BUS_VTABLE_UNPRIVILEGED),
3637         SD_BUS_METHOD_WITH_NAMES("SuspendThenHibernateWithFlags",
3638                                  "t",
3639                                  SD_BUS_PARAM(flags),
3640                                  NULL,,
3641                                  method_suspend_then_hibernate,
3642                                  SD_BUS_VTABLE_UNPRIVILEGED),
3643         SD_BUS_METHOD_WITH_NAMES("CanPowerOff",
3644                                  NULL,,
3645                                  "s",
3646                                  SD_BUS_PARAM(result),
3647                                  method_can_poweroff,
3648                                  SD_BUS_VTABLE_UNPRIVILEGED),
3649         SD_BUS_METHOD_WITH_NAMES("CanReboot",
3650                                  NULL,,
3651                                  "s",
3652                                  SD_BUS_PARAM(result),
3653                                  method_can_reboot,
3654                                  SD_BUS_VTABLE_UNPRIVILEGED),
3655         SD_BUS_METHOD_WITH_NAMES("CanHalt",
3656                                  NULL,,
3657                                  "s",
3658                                  SD_BUS_PARAM(result),
3659                                  method_can_halt,
3660                                  SD_BUS_VTABLE_UNPRIVILEGED),
3661         SD_BUS_METHOD_WITH_NAMES("CanSuspend",
3662                                  NULL,,
3663                                  "s",
3664                                  SD_BUS_PARAM(result),
3665                                  method_can_suspend,
3666                                  SD_BUS_VTABLE_UNPRIVILEGED),
3667         SD_BUS_METHOD_WITH_NAMES("CanHibernate",
3668                                  NULL,,
3669                                  "s",
3670                                  SD_BUS_PARAM(result),
3671                                  method_can_hibernate,
3672                                  SD_BUS_VTABLE_UNPRIVILEGED),
3673         SD_BUS_METHOD_WITH_NAMES("CanHybridSleep",
3674                                  NULL,,
3675                                  "s",
3676                                  SD_BUS_PARAM(result),
3677                                  method_can_hybrid_sleep,
3678                                  SD_BUS_VTABLE_UNPRIVILEGED),
3679         SD_BUS_METHOD_WITH_NAMES("CanSuspendThenHibernate",
3680                                  NULL,,
3681                                  "s",
3682                                  SD_BUS_PARAM(result),
3683                                  method_can_suspend_then_hibernate,
3684                                  SD_BUS_VTABLE_UNPRIVILEGED),
3685         SD_BUS_METHOD_WITH_NAMES("ScheduleShutdown",
3686                                  "st",
3687                                  SD_BUS_PARAM(type)
3688                                  SD_BUS_PARAM(usec),
3689                                  NULL,,
3690                                  method_schedule_shutdown,
3691                                  SD_BUS_VTABLE_UNPRIVILEGED),
3692         SD_BUS_METHOD_WITH_NAMES("CancelScheduledShutdown",
3693                                  NULL,,
3694                                  "b",
3695                                  SD_BUS_PARAM(cancelled),
3696                                  method_cancel_scheduled_shutdown,
3697                                  SD_BUS_VTABLE_UNPRIVILEGED),
3698         SD_BUS_METHOD_WITH_NAMES("Inhibit",
3699                                  "ssss",
3700                                  SD_BUS_PARAM(what)
3701                                  SD_BUS_PARAM(who)
3702                                  SD_BUS_PARAM(why)
3703                                  SD_BUS_PARAM(mode),
3704                                  "h",
3705                                  SD_BUS_PARAM(pipe_fd),
3706                                  method_inhibit,
3707                                  SD_BUS_VTABLE_UNPRIVILEGED),
3708         SD_BUS_METHOD_WITH_NAMES("CanRebootParameter",
3709                                  NULL,,
3710                                  "s",
3711                                  SD_BUS_PARAM(result),
3712                                  method_can_reboot_parameter,
3713                                  SD_BUS_VTABLE_UNPRIVILEGED),
3714         SD_BUS_METHOD_WITH_NAMES("SetRebootParameter",
3715                                  "s",
3716                                  SD_BUS_PARAM(parameter),
3717                                  NULL,,
3718                                  method_set_reboot_parameter,
3719                                  SD_BUS_VTABLE_UNPRIVILEGED),
3720         SD_BUS_METHOD_WITH_NAMES("CanRebootToFirmwareSetup",
3721                                  NULL,,
3722                                  "s",
3723                                  SD_BUS_PARAM(result),
3724                                  method_can_reboot_to_firmware_setup,
3725                                  SD_BUS_VTABLE_UNPRIVILEGED),
3726         SD_BUS_METHOD_WITH_NAMES("SetRebootToFirmwareSetup",
3727                                  "b",
3728                                  SD_BUS_PARAM(enable),
3729                                  NULL,,
3730                                  method_set_reboot_to_firmware_setup,
3731                                  SD_BUS_VTABLE_UNPRIVILEGED),
3732         SD_BUS_METHOD_WITH_NAMES("CanRebootToBootLoaderMenu",
3733                                  NULL,,
3734                                  "s",
3735                                  SD_BUS_PARAM(result),
3736                                  method_can_reboot_to_boot_loader_menu,
3737                                  SD_BUS_VTABLE_UNPRIVILEGED),
3738         SD_BUS_METHOD_WITH_NAMES("SetRebootToBootLoaderMenu",
3739                                  "t",
3740                                  SD_BUS_PARAM(timeout),
3741                                  NULL,,
3742                                  method_set_reboot_to_boot_loader_menu,
3743                                  SD_BUS_VTABLE_UNPRIVILEGED),
3744         SD_BUS_METHOD_WITH_NAMES("CanRebootToBootLoaderEntry",
3745                                  NULL,,
3746                                  "s",
3747                                  SD_BUS_PARAM(result),
3748                                  method_can_reboot_to_boot_loader_entry,
3749                                  SD_BUS_VTABLE_UNPRIVILEGED),
3750         SD_BUS_METHOD_WITH_NAMES("SetRebootToBootLoaderEntry",
3751                                  "s",
3752                                  SD_BUS_PARAM(boot_loader_entry),
3753                                  NULL,,
3754                                  method_set_reboot_to_boot_loader_entry,
3755                                  SD_BUS_VTABLE_UNPRIVILEGED),
3756         SD_BUS_METHOD_WITH_NAMES("SetWallMessage",
3757                                  "sb",
3758                                  SD_BUS_PARAM(wall_message)
3759                                  SD_BUS_PARAM(enable),
3760                                  NULL,,
3761                                  method_set_wall_message,
3762                                  SD_BUS_VTABLE_UNPRIVILEGED),
3763
3764         SD_BUS_SIGNAL_WITH_NAMES("SessionNew",
3765                                  "so",
3766                                  SD_BUS_PARAM(session_id)
3767                                  SD_BUS_PARAM(object_path),
3768                                  0),
3769         SD_BUS_SIGNAL_WITH_NAMES("SessionRemoved",
3770                                  "so",
3771                                  SD_BUS_PARAM(session_id)
3772                                  SD_BUS_PARAM(object_path),
3773                                  0),
3774         SD_BUS_SIGNAL_WITH_NAMES("UserNew",
3775                                  "uo",
3776                                  SD_BUS_PARAM(uid)
3777                                  SD_BUS_PARAM(object_path),
3778                                  0),
3779         SD_BUS_SIGNAL_WITH_NAMES("UserRemoved",
3780                                  "uo",
3781                                  SD_BUS_PARAM(uid)
3782                                  SD_BUS_PARAM(object_path),
3783                                  0),
3784         SD_BUS_SIGNAL_WITH_NAMES("SeatNew",
3785                                  "so",
3786                                  SD_BUS_PARAM(seat_id)
3787                                  SD_BUS_PARAM(object_path),
3788                                  0),
3789         SD_BUS_SIGNAL_WITH_NAMES("SeatRemoved",
3790                                  "so",
3791                                  SD_BUS_PARAM(seat_id)
3792                                  SD_BUS_PARAM(object_path),
3793                                  0),
3794         SD_BUS_SIGNAL_WITH_NAMES("PrepareForShutdown",
3795                                  "b",
3796                                  SD_BUS_PARAM(start),
3797                                  0),
3798         SD_BUS_SIGNAL_WITH_NAMES("PrepareForSleep",
3799                                  "b",
3800                                  SD_BUS_PARAM(start),
3801                                  0),
3802
3803         SD_BUS_VTABLE_END
3804 };
3805
3806 const BusObjectImplementation manager_object = {
3807         "/org/freedesktop/login1",
3808         "org.freedesktop.login1.Manager",
3809         .vtables = BUS_VTABLES(manager_vtable),
3810         .children = BUS_IMPLEMENTATIONS(&seat_object,
3811                                         &session_object,
3812                                         &user_object),
3813 };
3814
3815 static int session_jobs_reply(Session *s, uint32_t jid, const char *unit, const char *result) {
3816         assert(s);
3817         assert(unit);
3818
3819         if (!s->started)
3820                 return 0;
3821
3822         if (result && !streq(result, "done")) {
3823                 _cleanup_(sd_bus_error_free) sd_bus_error e = SD_BUS_ERROR_NULL;
3824
3825                 sd_bus_error_setf(&e, BUS_ERROR_JOB_FAILED,
3826                                   "Job %u for unit '%s' failed with '%s'", jid, unit, result);
3827                 return session_send_create_reply(s, &e);
3828         }
3829
3830         return session_send_create_reply(s, NULL);
3831 }
3832
3833 int match_job_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3834         const char *path, *result, *unit;
3835         Manager *m = userdata;
3836         Session *session;
3837         uint32_t id;
3838         User *user;
3839         int r;
3840
3841         assert(message);
3842         assert(m);
3843
3844         r = sd_bus_message_read(message, "uoss", &id, &path, &unit, &result);
3845         if (r < 0) {
3846                 bus_log_parse_error(r);
3847                 return 0;
3848         }
3849
3850         if (m->action_job && streq(m->action_job, path)) {
3851                 log_info("Operation '%s' finished.", inhibit_what_to_string(m->action_what));
3852
3853                 /* Tell people that they now may take a lock again */
3854                 (void) send_prepare_for(m, m->action_what, false);
3855
3856                 m->action_job = mfree(m->action_job);
3857                 m->action_unit = NULL;
3858                 m->action_what = 0;
3859                 return 0;
3860         }
3861
3862         session = hashmap_get(m->session_units, unit);
3863         if (session) {
3864                 if (streq_ptr(path, session->scope_job)) {
3865                         session->scope_job = mfree(session->scope_job);
3866                         (void) session_jobs_reply(session, id, unit, result);
3867
3868                         session_save(session);
3869                         user_save(session->user);
3870                 }
3871
3872                 session_add_to_gc_queue(session);
3873         }
3874
3875         user = hashmap_get(m->user_units, unit);
3876         if (user) {
3877                 if (streq_ptr(path, user->service_job)) {
3878                         user->service_job = mfree(user->service_job);
3879
3880                         LIST_FOREACH(sessions_by_user, session, user->sessions)
3881                                 (void) session_jobs_reply(session, id, unit, NULL /* don't propagate user service failures to the client */);
3882
3883                         user_save(user);
3884                 }
3885
3886                 user_add_to_gc_queue(user);
3887         }
3888
3889         return 0;
3890 }
3891
3892 int match_unit_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3893         const char *path, *unit;
3894         Manager *m = userdata;
3895         Session *session;
3896         User *user;
3897         int r;
3898
3899         assert(message);
3900         assert(m);
3901
3902         r = sd_bus_message_read(message, "so", &unit, &path);
3903         if (r < 0) {
3904                 bus_log_parse_error(r);
3905                 return 0;
3906         }
3907
3908         session = hashmap_get(m->session_units, unit);
3909         if (session)
3910                 session_add_to_gc_queue(session);
3911
3912         user = hashmap_get(m->user_units, unit);
3913         if (user)
3914                 user_add_to_gc_queue(user);
3915
3916         return 0;
3917 }
3918
3919 int match_properties_changed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3920         _cleanup_free_ char *unit = NULL;
3921         Manager *m = userdata;
3922         const char *path;
3923         Session *session;
3924         User *user;
3925         int r;
3926
3927         assert(message);
3928         assert(m);
3929
3930         path = sd_bus_message_get_path(message);
3931         if (!path)
3932                 return 0;
3933
3934         r = unit_name_from_dbus_path(path, &unit);
3935         if (r == -EINVAL) /* not a unit */
3936                 return 0;
3937         if (r < 0) {
3938                 log_oom();
3939                 return 0;
3940         }
3941
3942         session = hashmap_get(m->session_units, unit);
3943         if (session)
3944                 session_add_to_gc_queue(session);
3945
3946         user = hashmap_get(m->user_units, unit);
3947         if (user)
3948                 user_add_to_gc_queue(user);
3949
3950         return 0;
3951 }
3952
3953 int match_reloading(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3954         Manager *m = userdata;
3955         Session *session;
3956         int b, r;
3957
3958         assert(message);
3959         assert(m);
3960
3961         r = sd_bus_message_read(message, "b", &b);
3962         if (r < 0) {
3963                 bus_log_parse_error(r);
3964                 return 0;
3965         }
3966
3967         if (b)
3968                 return 0;
3969
3970         /* systemd finished reloading, let's recheck all our sessions */
3971         log_debug("System manager has been reloaded, rechecking sessions...");
3972
3973         HASHMAP_FOREACH(session, m->sessions)
3974                 session_add_to_gc_queue(session);
3975
3976         return 0;
3977 }
3978
3979 int manager_send_changed(Manager *manager, const char *property, ...) {
3980         char **l;
3981
3982         assert(manager);
3983
3984         l = strv_from_stdarg_alloca(property);
3985
3986         return sd_bus_emit_properties_changed_strv(
3987                         manager->bus,
3988                         "/org/freedesktop/login1",
3989                         "org.freedesktop.login1.Manager",
3990                         l);
3991 }
3992
3993 static int strdup_job(sd_bus_message *reply, char **job) {
3994         const char *j;
3995         char *copy;
3996         int r;
3997
3998         r = sd_bus_message_read(reply, "o", &j);
3999         if (r < 0)
4000                 return r;
4001
4002         copy = strdup(j);
4003         if (!copy)
4004                 return -ENOMEM;
4005
4006         *job = copy;
4007         return 1;
4008 }
4009
4010 int manager_start_scope(
4011                 Manager *manager,
4012                 const char *scope,
4013                 pid_t pid,
4014                 const char *slice,
4015                 const char *description,
4016                 char **wants,
4017                 char **after,
4018                 const char *requires_mounts_for,
4019                 sd_bus_message *more_properties,
4020                 sd_bus_error *error,
4021                 char **job) {
4022
4023         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
4024         char **i;
4025         int r;
4026
4027         assert(manager);
4028         assert(scope);
4029         assert(pid > 1);
4030         assert(job);
4031
4032         r = bus_message_new_method_call(manager->bus, &m, bus_systemd_mgr, "StartTransientUnit");
4033         if (r < 0)
4034                 return r;
4035
4036         r = sd_bus_message_append(m, "ss", strempty(scope), "fail");
4037         if (r < 0)
4038                 return r;
4039
4040         r = sd_bus_message_open_container(m, 'a', "(sv)");
4041         if (r < 0)
4042                 return r;
4043
4044         if (!isempty(slice)) {
4045                 r = sd_bus_message_append(m, "(sv)", "Slice", "s", slice);
4046                 if (r < 0)
4047                         return r;
4048         }
4049
4050         if (!isempty(description)) {
4051                 r = sd_bus_message_append(m, "(sv)", "Description", "s", description);
4052                 if (r < 0)
4053                         return r;
4054         }
4055
4056         STRV_FOREACH(i, wants) {
4057                 r = sd_bus_message_append(m, "(sv)", "Wants", "as", 1, *i);
4058                 if (r < 0)
4059                         return r;
4060         }
4061
4062         STRV_FOREACH(i, after) {
4063                 r = sd_bus_message_append(m, "(sv)", "After", "as", 1, *i);
4064                 if (r < 0)
4065                         return r;
4066         }
4067
4068         if (!empty_or_root(requires_mounts_for)) {
4069                 r = sd_bus_message_append(m, "(sv)", "RequiresMountsFor", "as", 1, requires_mounts_for);
4070                 if (r < 0)
4071                         return r;
4072         }
4073
4074         /* Make sure that the session shells are terminated with SIGHUP since bash and friends tend to ignore
4075          * SIGTERM */
4076         r = sd_bus_message_append(m, "(sv)", "SendSIGHUP", "b", true);
4077         if (r < 0)
4078                 return r;
4079
4080         r = sd_bus_message_append(m, "(sv)", "PIDs", "au", 1, pid);
4081         if (r < 0)
4082                 return r;
4083
4084         /* disable TasksMax= for the session scope, rely on the slice setting for it */
4085         r = sd_bus_message_append(m, "(sv)", "TasksMax", "t", UINT64_MAX);
4086         if (r < 0)
4087                 return bus_log_create_error(r);
4088
4089         if (more_properties) {
4090                 /* If TasksMax also appears here, it will overwrite the default value set above */
4091                 r = sd_bus_message_copy(m, more_properties, true);
4092                 if (r < 0)
4093                         return r;
4094         }
4095
4096         r = sd_bus_message_close_container(m);
4097         if (r < 0)
4098                 return r;
4099
4100         r = sd_bus_message_append(m, "a(sa(sv))", 0);
4101         if (r < 0)
4102                 return r;
4103
4104         r = sd_bus_call(manager->bus, m, 0, error, &reply);
4105         if (r < 0)
4106                 return r;
4107
4108         return strdup_job(reply, job);
4109 }
4110
4111 int manager_start_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) {
4112         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4113         int r;
4114
4115         assert(manager);
4116         assert(unit);
4117         assert(job);
4118
4119         r = bus_call_method(
4120                         manager->bus,
4121                         bus_systemd_mgr,
4122                         "StartUnit",
4123                         error,
4124                         &reply,
4125                         "ss", unit, "replace");
4126         if (r < 0)
4127                 return r;
4128
4129         return strdup_job(reply, job);
4130 }
4131
4132 int manager_stop_unit(Manager *manager, const char *unit, const char *job_mode, sd_bus_error *error, char **ret_job) {
4133         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4134         int r;
4135
4136         assert(manager);
4137         assert(unit);
4138         assert(ret_job);
4139
4140         r = bus_call_method(
4141                         manager->bus,
4142                         bus_systemd_mgr,
4143                         "StopUnit",
4144                         error,
4145                         &reply,
4146                         "ss", unit, job_mode ?: "fail");
4147         if (r < 0) {
4148                 if (sd_bus_error_has_names(error, BUS_ERROR_NO_SUCH_UNIT,
4149                                                   BUS_ERROR_LOAD_FAILED)) {
4150
4151                         *ret_job = NULL;
4152                         sd_bus_error_free(error);
4153                         return 0;
4154                 }
4155
4156                 return r;
4157         }
4158
4159         return strdup_job(reply, ret_job);
4160 }
4161
4162 int manager_abandon_scope(Manager *manager, const char *scope, sd_bus_error *ret_error) {
4163         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4164         _cleanup_free_ char *path = NULL;
4165         int r;
4166
4167         assert(manager);
4168         assert(scope);
4169
4170         path = unit_dbus_path_from_name(scope);
4171         if (!path)
4172                 return -ENOMEM;
4173
4174         r = sd_bus_call_method(
4175                         manager->bus,
4176                         "org.freedesktop.systemd1",
4177                         path,
4178                         "org.freedesktop.systemd1.Scope",
4179                         "Abandon",
4180                         &error,
4181                         NULL,
4182                         NULL);
4183         if (r < 0) {
4184                 if (sd_bus_error_has_names(&error, BUS_ERROR_NO_SUCH_UNIT,
4185                                                    BUS_ERROR_LOAD_FAILED,
4186                                                    BUS_ERROR_SCOPE_NOT_RUNNING))
4187                         return 0;
4188
4189                 sd_bus_error_move(ret_error, &error);
4190                 return r;
4191         }
4192
4193         return 1;
4194 }
4195
4196 int manager_kill_unit(Manager *manager, const char *unit, KillWho who, int signo, sd_bus_error *error) {
4197         assert(manager);
4198         assert(unit);
4199
4200         return bus_call_method(
4201                         manager->bus,
4202                         bus_systemd_mgr,
4203                         "KillUnit",
4204                         error,
4205                         NULL,
4206                         "ssi", unit, who == KILL_LEADER ? "main" : "all", signo);
4207 }
4208
4209 int manager_unit_is_active(Manager *manager, const char *unit, sd_bus_error *ret_error) {
4210         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4211         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4212         _cleanup_free_ char *path = NULL;
4213         const char *state;
4214         int r;
4215
4216         assert(manager);
4217         assert(unit);
4218
4219         path = unit_dbus_path_from_name(unit);
4220         if (!path)
4221                 return -ENOMEM;
4222
4223         r = sd_bus_get_property(
4224                         manager->bus,
4225                         "org.freedesktop.systemd1",
4226                         path,
4227                         "org.freedesktop.systemd1.Unit",
4228                         "ActiveState",
4229                         &error,
4230                         &reply,
4231                         "s");
4232         if (r < 0) {
4233                 /* systemd might have dropped off momentarily, let's
4234                  * not make this an error */
4235                 if (sd_bus_error_has_names(&error, SD_BUS_ERROR_NO_REPLY,
4236                                                    SD_BUS_ERROR_DISCONNECTED))
4237                         return true;
4238
4239                 /* If the unit is already unloaded then it's not
4240                  * active */
4241                 if (sd_bus_error_has_names(&error, BUS_ERROR_NO_SUCH_UNIT,
4242                                                    BUS_ERROR_LOAD_FAILED))
4243                         return false;
4244
4245                 sd_bus_error_move(ret_error, &error);
4246                 return r;
4247         }
4248
4249         r = sd_bus_message_read(reply, "s", &state);
4250         if (r < 0)
4251                 return r;
4252
4253         return !STR_IN_SET(state, "inactive", "failed");
4254 }
4255
4256 int manager_job_is_active(Manager *manager, const char *path, sd_bus_error *ret_error) {
4257         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4258         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4259         int r;
4260
4261         assert(manager);
4262         assert(path);
4263
4264         r = sd_bus_get_property(
4265                         manager->bus,
4266                         "org.freedesktop.systemd1",
4267                         path,
4268                         "org.freedesktop.systemd1.Job",
4269                         "State",
4270                         &error,
4271                         &reply,
4272                         "s");
4273         if (r < 0) {
4274                 if (sd_bus_error_has_names(&error, SD_BUS_ERROR_NO_REPLY,
4275                                                    SD_BUS_ERROR_DISCONNECTED))
4276                         return true;
4277
4278                 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_OBJECT))
4279                         return false;
4280
4281                 sd_bus_error_move(ret_error, &error);
4282                 return r;
4283         }
4284
4285         /* We don't actually care about the state really. The fact
4286          * that we could read the job state is enough for us */
4287
4288         return true;
4289 }