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_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid UID");
 699         if (leader < 0 || leader == 1 || leader == getpid_cached())
 700                 return sd_bus_error_setf(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_setf(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                 _cleanup_free_ char *t = NULL;
1323                 const char *p;
1324
1325                 r = sd_device_get_syspath(d, &p);
1326                 if (r < 0)
1327                         return r;
1328
1329                 t = path_join(p, "uevent");
1330                 if (!t)
1331                         return -ENOMEM;
1332
1333                 (void) write_string_file(t, "change", WRITE_STRING_FILE_DISABLE_BUFFER);
1334         }
1335
1336         return 0;
1337 }
1338
1339 static int attach_device(Manager *m, const char *seat, const char *sysfs) {
1340         _cleanup_(sd_device_unrefp) sd_device *d = NULL;
1341         _cleanup_free_ char *rule = NULL, *file = NULL;
1342         const char *id_for_seat;
1343         int r;
1344
1345         assert(m);
1346         assert(seat);
1347         assert(sysfs);
1348
1349         r = sd_device_new_from_syspath(&d, sysfs);
1350         if (r < 0)
1351                 return r;
1352
1353         if (sd_device_has_current_tag(d, "seat") <= 0)
1354                 return -ENODEV;
1355
1356         if (sd_device_get_property_value(d, "ID_FOR_SEAT", &id_for_seat) < 0)
1357                 return -ENODEV;
1358
1359         if (asprintf(&file, "/etc/udev/rules.d/72-seat-%s.rules", id_for_seat) < 0)
1360                 return -ENOMEM;
1361
1362         if (asprintf(&rule, "TAG==\"seat\", ENV{ID_FOR_SEAT}==\"%s\", ENV{ID_SEAT}=\"%s\"", id_for_seat, seat) < 0)
1363                 return -ENOMEM;
1364
1365         (void) mkdir_p_label("/etc/udev/rules.d", 0755);
1366         r = write_string_file_atomic_label(file, rule);
1367         if (r < 0)
1368                 return r;
1369
1370         return trigger_device(m, d);
1371 }
1372
1373 static int flush_devices(Manager *m) {
1374         _cleanup_closedir_ DIR *d;
1375
1376         assert(m);
1377
1378         d = opendir("/etc/udev/rules.d");
1379         if (!d) {
1380                 if (errno != ENOENT)
1381                         log_warning_errno(errno, "Failed to open /etc/udev/rules.d: %m");
1382         } else {
1383                 struct dirent *de;
1384
1385                 FOREACH_DIRENT_ALL(de, d, break) {
1386                         dirent_ensure_type(d, de);
1387                         if (!dirent_is_file(de))
1388                                 continue;
1389
1390                         if (!startswith(de->d_name, "72-seat-"))
1391                                 continue;
1392
1393                         if (!endswith(de->d_name, ".rules"))
1394                                 continue;
1395
1396                         if (unlinkat(dirfd(d), de->d_name, 0) < 0)
1397                                 log_warning_errno(errno, "Failed to unlink %s: %m", de->d_name);
1398                 }
1399         }
1400
1401         return trigger_device(m, NULL);
1402 }
1403
1404 static int method_attach_device(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1405         const char *sysfs, *seat;
1406         Manager *m = userdata;
1407         int interactive, r;
1408
1409         assert(message);
1410         assert(m);
1411
1412         r = sd_bus_message_read(message, "ssb", &seat, &sysfs, &interactive);
1413         if (r < 0)
1414                 return r;
1415
1416         if (!path_is_normalized(sysfs))
1417                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not normalized", sysfs);
1418         if (!path_startswith(sysfs, "/sys"))
1419                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not in /sys", sysfs);
1420
1421         if (SEAT_IS_SELF(seat) || SEAT_IS_AUTO(seat)) {
1422                 Seat *found;
1423
1424                 r = manager_get_seat_from_creds(m, message, seat, error, &found);
1425                 if (r < 0)
1426                         return r;
1427
1428                 seat = found->id;
1429
1430         } else if (!seat_name_is_valid(seat)) /* Note that a seat does not have to exist yet for this operation to succeed */
1431                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Seat name %s is not valid", seat);
1432
1433         r = bus_verify_polkit_async(
1434                         message,
1435                         CAP_SYS_ADMIN,
1436                         "org.freedesktop.login1.attach-device",
1437                         NULL,
1438                         interactive,
1439                         UID_INVALID,
1440                         &m->polkit_registry,
1441                         error);
1442         if (r < 0)
1443                 return r;
1444         if (r == 0)
1445                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1446
1447         r = attach_device(m, seat, sysfs);
1448         if (r < 0)
1449                 return r;
1450
1451         return sd_bus_reply_method_return(message, NULL);
1452 }
1453
1454 static int method_flush_devices(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1455         Manager *m = userdata;
1456         int interactive, r;
1457
1458         assert(message);
1459         assert(m);
1460
1461         r = sd_bus_message_read(message, "b", &interactive);
1462         if (r < 0)
1463                 return r;
1464
1465         r = bus_verify_polkit_async(
1466                         message,
1467                         CAP_SYS_ADMIN,
1468                         "org.freedesktop.login1.flush-devices",
1469                         NULL,
1470                         interactive,
1471                         UID_INVALID,
1472                         &m->polkit_registry,
1473                         error);
1474         if (r < 0)
1475                 return r;
1476         if (r == 0)
1477                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1478
1479         r = flush_devices(m);
1480         if (r < 0)
1481                 return r;
1482
1483         return sd_bus_reply_method_return(message, NULL);
1484 }
1485
1486 static int have_multiple_sessions(
1487                 Manager *m,
1488                 uid_t uid) {
1489
1490         Session *session;
1491
1492         assert(m);
1493
1494         /* Check for other users' sessions. Greeter sessions do not
1495          * count, and non-login sessions do not count either. */
1496         HASHMAP_FOREACH(session, m->sessions)
1497                 if (session->class == SESSION_USER &&
1498                     session->user->user_record->uid != uid)
1499                         return true;
1500
1501         return false;
1502 }
1503
1504 static int bus_manager_log_shutdown(
1505                 Manager *m,
1506                 const char *unit_name) {
1507
1508         const char *p, *q;
1509
1510         assert(m);
1511         assert(unit_name);
1512
1513         if (streq(unit_name, SPECIAL_POWEROFF_TARGET)) {
1514                 p = "MESSAGE=System is powering down";
1515                 q = "SHUTDOWN=power-off";
1516         } else if (streq(unit_name, SPECIAL_REBOOT_TARGET)) {
1517                 p = "MESSAGE=System is rebooting";
1518                 q = "SHUTDOWN=reboot";
1519         } else if (streq(unit_name, SPECIAL_HALT_TARGET)) {
1520                 p = "MESSAGE=System is halting";
1521                 q = "SHUTDOWN=halt";
1522         } else if (streq(unit_name, SPECIAL_KEXEC_TARGET)) {
1523                 p = "MESSAGE=System is rebooting with kexec";
1524                 q = "SHUTDOWN=kexec";
1525         } else {
1526                 p = "MESSAGE=System is shutting down";
1527                 q = NULL;
1528         }
1529
1530         if (isempty(m->wall_message))
1531                 p = strjoina(p, ".");
1532         else
1533                 p = strjoina(p, " (", m->wall_message, ").");
1534
1535         return log_struct(LOG_NOTICE,
1536                           "MESSAGE_ID=" SD_MESSAGE_SHUTDOWN_STR,
1537                           p,
1538                           q);
1539 }
1540
1541 static int lid_switch_ignore_handler(sd_event_source *e, uint64_t usec, void *userdata) {
1542         Manager *m = userdata;
1543
1544         assert(e);
1545         assert(m);
1546
1547         m->lid_switch_ignore_event_source = sd_event_source_unref(m->lid_switch_ignore_event_source);
1548         return 0;
1549 }
1550
1551 int manager_set_lid_switch_ignore(Manager *m, usec_t until) {
1552         int r;
1553
1554         assert(m);
1555
1556         if (until <= now(CLOCK_MONOTONIC))
1557                 return 0;
1558
1559         /* We want to ignore the lid switch for a while after each
1560          * suspend, and after boot-up. Hence let's install a timer for
1561          * this. As long as the event source exists we ignore the lid
1562          * switch. */
1563
1564         if (m->lid_switch_ignore_event_source) {
1565                 usec_t u;
1566
1567                 r = sd_event_source_get_time(m->lid_switch_ignore_event_source, &u);
1568                 if (r < 0)
1569                         return r;
1570
1571                 if (until <= u)
1572                         return 0;
1573
1574                 r = sd_event_source_set_time(m->lid_switch_ignore_event_source, until);
1575         } else
1576                 r = sd_event_add_time(
1577                                 m->event,
1578                                 &m->lid_switch_ignore_event_source,
1579                                 CLOCK_MONOTONIC,
1580                                 until, 0,
1581                                 lid_switch_ignore_handler, m);
1582
1583         return r;
1584 }
1585
1586 static int send_prepare_for(Manager *m, InhibitWhat w, bool _active) {
1587         int active = _active;
1588
1589         assert(m);
1590         assert(IN_SET(w, INHIBIT_SHUTDOWN, INHIBIT_SLEEP));
1591
1592         return sd_bus_emit_signal(m->bus,
1593                                   "/org/freedesktop/login1",
1594                                   "org.freedesktop.login1.Manager",
1595                                   w == INHIBIT_SHUTDOWN ? "PrepareForShutdown" : "PrepareForSleep",
1596                                   "b",
1597                                   active);
1598 }
1599
1600 static int execute_shutdown_or_sleep(
1601                 Manager *m,
1602                 InhibitWhat w,
1603                 const char *unit_name,
1604                 sd_bus_error *error) {
1605
1606         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1607         const char *p;
1608         int r;
1609
1610         assert(m);
1611         assert(w > 0);
1612         assert(w < _INHIBIT_WHAT_MAX);
1613         assert(unit_name);
1614
1615         if (w == INHIBIT_SHUTDOWN)
1616                 bus_manager_log_shutdown(m, unit_name);
1617
1618         r = bus_call_method(
1619                         m->bus,
1620                         bus_systemd_mgr,
1621                         "StartUnit",
1622                         error,
1623                         &reply,
1624                         "ss", unit_name, "replace-irreversibly");
1625         if (r < 0)
1626                 goto error;
1627
1628         r = sd_bus_message_read(reply, "o", &p);
1629         if (r < 0)
1630                 goto error;
1631
1632         r = free_and_strdup(&m->action_job, p);
1633         if (r < 0)
1634                 goto error;
1635
1636         m->action_unit = unit_name;
1637         m->action_what = w;
1638
1639         /* Make sure the lid switch is ignored for a while */
1640         manager_set_lid_switch_ignore(m, usec_add(now(CLOCK_MONOTONIC), m->holdoff_timeout_usec));
1641
1642         return 0;
1643
1644 error:
1645         /* Tell people that they now may take a lock again */
1646         (void) send_prepare_for(m, w, false);
1647
1648         return r;
1649 }
1650
1651 int manager_dispatch_delayed(Manager *manager, bool timeout) {
1652
1653         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1654         Inhibitor *offending = NULL;
1655         int r;
1656
1657         assert(manager);
1658
1659         if (manager->action_what == 0 || manager->action_job)
1660                 return 0;
1661
1662         if (manager_is_inhibited(manager, manager->action_what, INHIBIT_DELAY, NULL, false, false, 0, &offending)) {
1663                 _cleanup_free_ char *comm = NULL, *u = NULL;
1664
1665                 if (!timeout)
1666                         return 0;
1667
1668                 (void) get_process_comm(offending->pid, &comm);
1669                 u = uid_to_name(offending->uid);
1670
1671                 log_notice("Delay lock is active (UID "UID_FMT"/%s, PID "PID_FMT"/%s) but inhibitor timeout is reached.",
1672                            offending->uid, strna(u),
1673                            offending->pid, strna(comm));
1674         }
1675
1676         /* Actually do the operation */
1677         r = execute_shutdown_or_sleep(manager, manager->action_what, manager->action_unit, &error);
1678         if (r < 0) {
1679                 log_warning("Error during inhibitor-delayed operation (already returned success to client): %s",
1680                             bus_error_message(&error, r));
1681
1682                 manager->action_unit = NULL;
1683                 manager->action_what = 0;
1684                 return r;
1685         }
1686
1687         return 1;
1688 }
1689
1690 static int manager_inhibit_timeout_handler(
1691                         sd_event_source *s,
1692                         uint64_t usec,
1693                         void *userdata) {
1694
1695         Manager *manager = userdata;
1696         int r;
1697
1698         assert(manager);
1699         assert(manager->inhibit_timeout_source == s);
1700
1701         r = manager_dispatch_delayed(manager, true);
1702         return (r < 0) ? r : 0;
1703 }
1704
1705 static int delay_shutdown_or_sleep(
1706                 Manager *m,
1707                 InhibitWhat w,
1708                 const char *unit_name) {
1709
1710         int r;
1711
1712         assert(m);
1713         assert(w >= 0);
1714         assert(w < _INHIBIT_WHAT_MAX);
1715         assert(unit_name);
1716
1717         if (m->inhibit_timeout_source) {
1718                 r = sd_event_source_set_time_relative(m->inhibit_timeout_source, m->inhibit_delay_max);
1719                 if (r < 0)
1720                         return log_error_errno(r, "sd_event_source_set_time_relative() failed: %m");
1721
1722                 r = sd_event_source_set_enabled(m->inhibit_timeout_source, SD_EVENT_ONESHOT);
1723                 if (r < 0)
1724                         return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
1725         } else {
1726                 r = sd_event_add_time_relative(
1727                                 m->event,
1728                                 &m->inhibit_timeout_source,
1729                                 CLOCK_MONOTONIC, m->inhibit_delay_max, 0,
1730                                 manager_inhibit_timeout_handler, m);
1731                 if (r < 0)
1732                         return r;
1733         }
1734
1735         m->action_unit = unit_name;
1736         m->action_what = w;
1737
1738         return 0;
1739 }
1740
1741 int bus_manager_shutdown_or_sleep_now_or_later(
1742                 Manager *m,
1743                 const char *unit_name,
1744                 InhibitWhat w,
1745                 sd_bus_error *error) {
1746
1747         _cleanup_free_ char *load_state = NULL;
1748         bool delayed;
1749         int r;
1750
1751         assert(m);
1752         assert(unit_name);
1753         assert(w > 0);
1754         assert(w < _INHIBIT_WHAT_MAX);
1755         assert(!m->action_job);
1756
1757         r = unit_load_state(m->bus, unit_name, &load_state);
1758         if (r < 0)
1759                 return r;
1760
1761         if (!streq(load_state, "loaded"))
1762                 return log_notice_errno(SYNTHETIC_ERRNO(EACCES),
1763                                         "Unit %s is %s, refusing operation.",
1764                                         unit_name, load_state);
1765
1766         /* Tell everybody to prepare for shutdown/sleep */
1767         (void) send_prepare_for(m, w, true);
1768
1769         delayed =
1770                 m->inhibit_delay_max > 0 &&
1771                 manager_is_inhibited(m, w, INHIBIT_DELAY, NULL, false, false, 0, NULL);
1772
1773         if (delayed)
1774                 /* Shutdown is delayed, keep in mind what we
1775                  * want to do, and start a timeout */
1776                 r = delay_shutdown_or_sleep(m, w, unit_name);
1777         else
1778                 /* Shutdown is not delayed, execute it
1779                  * immediately */
1780                 r = execute_shutdown_or_sleep(m, w, unit_name, error);
1781
1782         return r;
1783 }
1784
1785 static int verify_shutdown_creds(
1786                 Manager *m,
1787                 sd_bus_message *message,
1788                 InhibitWhat w,
1789                 const char *action,
1790                 const char *action_multiple_sessions,
1791                 const char *action_ignore_inhibit,
1792                 uint64_t flags,
1793                 sd_bus_error *error) {
1794
1795         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
1796         bool multiple_sessions, blocked, interactive;
1797         uid_t uid;
1798         int r;
1799
1800         assert(m);
1801         assert(message);
1802         assert(w >= 0);
1803         assert(w <= _INHIBIT_WHAT_MAX);
1804
1805         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
1806         if (r < 0)
1807                 return r;
1808
1809         r = sd_bus_creds_get_euid(creds, &uid);
1810         if (r < 0)
1811                 return r;
1812
1813         r = have_multiple_sessions(m, uid);
1814         if (r < 0)
1815                 return r;
1816
1817         multiple_sessions = r > 0;
1818         blocked = manager_is_inhibited(m, w, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
1819         interactive = flags & SD_LOGIND_INTERACTIVE;
1820
1821         if (multiple_sessions && action_multiple_sessions) {
1822                 r = bus_verify_polkit_async(message, CAP_SYS_BOOT, action_multiple_sessions, NULL, interactive, UID_INVALID, &m->polkit_registry, error);
1823                 if (r < 0)
1824                         return r;
1825                 if (r == 0)
1826                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1827         }
1828
1829         if (blocked) {
1830                 /* We don't check polkit for root here, because you can't be more privileged than root */
1831                 if (uid == 0 && (flags & SD_LOGIND_ROOT_CHECK_INHIBITORS))
1832                         return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED,
1833                                                  "Access denied to root due to active block inhibitor");
1834
1835                 if (action_ignore_inhibit) {
1836                         r = bus_verify_polkit_async(message, CAP_SYS_BOOT, action_ignore_inhibit, 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
1844         if (!multiple_sessions && !blocked && action) {
1845                 r = bus_verify_polkit_async(message, CAP_SYS_BOOT, action, NULL, interactive, UID_INVALID, &m->polkit_registry, error);
1846                 if (r < 0)
1847                         return r;
1848                 if (r == 0)
1849                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1850         }
1851
1852         return 0;
1853 }
1854
1855 static int method_do_shutdown_or_sleep(
1856                 Manager *m,
1857                 sd_bus_message *message,
1858                 const char *unit_name,
1859                 InhibitWhat w,
1860                 const char *action,
1861                 const char *action_multiple_sessions,
1862                 const char *action_ignore_inhibit,
1863                 const char *sleep_verb,
1864                 bool with_flags,
1865                 sd_bus_error *error) {
1866
1867         uint64_t flags;
1868         int r;
1869
1870         assert(m);
1871         assert(message);
1872         assert(unit_name);
1873         assert(w >= 0);
1874         assert(w <= _INHIBIT_WHAT_MAX);
1875
1876         if (with_flags) {
1877                 /* New style method: with flags parameter (and interactive bool in the bus message header) */
1878                 r = sd_bus_message_read(message, "t", &flags);
1879                 if (r < 0)
1880                         return r;
1881                 if ((flags & ~SD_LOGIND_SHUTDOWN_AND_SLEEP_FLAGS_PUBLIC) != 0)
1882                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid flags parameter");
1883         } else {
1884                 /* Old style method: no flags parameter, but interactive bool passed as boolean in
1885                  * payload. Let's convert this argument to the new-style flags parameter for our internal
1886                  * use. */
1887                 int interactive;
1888
1889                 r = sd_bus_message_read(message, "b", &interactive);
1890                 if (r < 0)
1891                         return r;
1892
1893                 flags = interactive ? SD_LOGIND_INTERACTIVE : 0;
1894         }
1895
1896         /* Don't allow multiple jobs being executed at the same time */
1897         if (m->action_what > 0)
1898                 return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS,
1899                                          "There's already a shutdown or sleep operation in progress");
1900
1901         if (sleep_verb) {
1902                 r = can_sleep(sleep_verb);
1903                 if (r == -ENOSPC)
1904                         return sd_bus_error_set(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
1905                                                 "Not enough swap space for hibernation");
1906                 if (r == 0)
1907                         return sd_bus_error_setf(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
1908                                                  "Sleep verb \"%s\" not supported", sleep_verb);
1909                 if (r < 0)
1910                         return r;
1911         }
1912
1913         r = verify_shutdown_creds(m, message, w, action, action_multiple_sessions,
1914                                   action_ignore_inhibit, flags, error);
1915         if (r != 0)
1916                 return r;
1917
1918         r = bus_manager_shutdown_or_sleep_now_or_later(m, unit_name, w, error);
1919         if (r < 0)
1920                 return r;
1921
1922         return sd_bus_reply_method_return(message, NULL);
1923 }
1924
1925 static int method_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1926         Manager *m = userdata;
1927
1928         return method_do_shutdown_or_sleep(
1929                         m, message,
1930                         SPECIAL_POWEROFF_TARGET,
1931                         INHIBIT_SHUTDOWN,
1932                         "org.freedesktop.login1.power-off",
1933                         "org.freedesktop.login1.power-off-multiple-sessions",
1934                         "org.freedesktop.login1.power-off-ignore-inhibit",
1935                         NULL,
1936                         sd_bus_message_is_method_call(message, NULL, "PowerOffWithFlags"),
1937                         error);
1938 }
1939
1940 static int method_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1941         Manager *m = userdata;
1942
1943         return method_do_shutdown_or_sleep(
1944                         m, message,
1945                         SPECIAL_REBOOT_TARGET,
1946                         INHIBIT_SHUTDOWN,
1947                         "org.freedesktop.login1.reboot",
1948                         "org.freedesktop.login1.reboot-multiple-sessions",
1949                         "org.freedesktop.login1.reboot-ignore-inhibit",
1950                         NULL,
1951                         sd_bus_message_is_method_call(message, NULL, "RebootWithFlags"),
1952                         error);
1953 }
1954
1955 static int method_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1956         Manager *m = userdata;
1957
1958         return method_do_shutdown_or_sleep(
1959                         m, message,
1960                         SPECIAL_HALT_TARGET,
1961                         INHIBIT_SHUTDOWN,
1962                         "org.freedesktop.login1.halt",
1963                         "org.freedesktop.login1.halt-multiple-sessions",
1964                         "org.freedesktop.login1.halt-ignore-inhibit",
1965                         NULL,
1966                         sd_bus_message_is_method_call(message, NULL, "HaltWithFlags"),
1967                         error);
1968 }
1969
1970 static int method_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1971         Manager *m = userdata;
1972
1973         return method_do_shutdown_or_sleep(
1974                         m, message,
1975                         SPECIAL_SUSPEND_TARGET,
1976                         INHIBIT_SLEEP,
1977                         "org.freedesktop.login1.suspend",
1978                         "org.freedesktop.login1.suspend-multiple-sessions",
1979                         "org.freedesktop.login1.suspend-ignore-inhibit",
1980                         "suspend",
1981                         sd_bus_message_is_method_call(message, NULL, "SuspendWithFlags"),
1982                         error);
1983 }
1984
1985 static int method_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1986         Manager *m = userdata;
1987
1988         return method_do_shutdown_or_sleep(
1989                         m, message,
1990                         SPECIAL_HIBERNATE_TARGET,
1991                         INHIBIT_SLEEP,
1992                         "org.freedesktop.login1.hibernate",
1993                         "org.freedesktop.login1.hibernate-multiple-sessions",
1994                         "org.freedesktop.login1.hibernate-ignore-inhibit",
1995                         "hibernate",
1996                         sd_bus_message_is_method_call(message, NULL, "HibernateWithFlags"),
1997                         error);
1998 }
1999
2000 static int method_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2001         Manager *m = userdata;
2002
2003         return method_do_shutdown_or_sleep(
2004                         m, message,
2005                         SPECIAL_HYBRID_SLEEP_TARGET,
2006                         INHIBIT_SLEEP,
2007                         "org.freedesktop.login1.hibernate",
2008                         "org.freedesktop.login1.hibernate-multiple-sessions",
2009                         "org.freedesktop.login1.hibernate-ignore-inhibit",
2010                         "hybrid-sleep",
2011                         sd_bus_message_is_method_call(message, NULL, "HybridSleepWithFlags"),
2012                         error);
2013 }
2014
2015 static int method_suspend_then_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2016         Manager *m = userdata;
2017
2018         return method_do_shutdown_or_sleep(
2019                         m, message,
2020                         SPECIAL_SUSPEND_THEN_HIBERNATE_TARGET,
2021                         INHIBIT_SLEEP,
2022                         "org.freedesktop.login1.hibernate",
2023                         "org.freedesktop.login1.hibernate-multiple-sessions",
2024                         "org.freedesktop.login1.hibernate-ignore-inhibit",
2025                         "hybrid-sleep",
2026                         sd_bus_message_is_method_call(message, NULL, "SuspendThenHibernateWithFlags"),
2027                         error);
2028 }
2029
2030 static int nologin_timeout_handler(
2031                         sd_event_source *s,
2032                         uint64_t usec,
2033                         void *userdata) {
2034
2035         Manager *m = userdata;
2036
2037         log_info("Creating /run/nologin, blocking further logins...");
2038
2039         m->unlink_nologin =
2040                 create_shutdown_run_nologin_or_warn() >= 0;
2041
2042         return 0;
2043 }
2044
2045 static int update_schedule_file(Manager *m) {
2046         _cleanup_free_ char *temp_path = NULL;
2047         _cleanup_fclose_ FILE *f = NULL;
2048         int r;
2049
2050         assert(m);
2051
2052         r = mkdir_safe_label("/run/systemd/shutdown", 0755, 0, 0, MKDIR_WARN_MODE);
2053         if (r < 0)
2054                 return log_error_errno(r, "Failed to create shutdown subdirectory: %m");
2055
2056         r = fopen_temporary("/run/systemd/shutdown/scheduled", &f, &temp_path);
2057         if (r < 0)
2058                 return log_error_errno(r, "Failed to save information about scheduled shutdowns: %m");
2059
2060         (void) fchmod(fileno(f), 0644);
2061
2062         fprintf(f,
2063                 "USEC="USEC_FMT"\n"
2064                 "WARN_WALL=%i\n"
2065                 "MODE=%s\n",
2066                 m->scheduled_shutdown_timeout,
2067                 m->enable_wall_messages,
2068                 m->scheduled_shutdown_type);
2069
2070         if (!isempty(m->wall_message)) {
2071                 _cleanup_free_ char *t;
2072
2073                 t = cescape(m->wall_message);
2074                 if (!t) {
2075                         r = -ENOMEM;
2076                         goto fail;
2077                 }
2078
2079                 fprintf(f, "WALL_MESSAGE=%s\n", t);
2080         }
2081
2082         r = fflush_and_check(f);
2083         if (r < 0)
2084                 goto fail;
2085
2086         if (rename(temp_path, "/run/systemd/shutdown/scheduled") < 0) {
2087                 r = -errno;
2088                 goto fail;
2089         }
2090
2091         return 0;
2092
2093 fail:
2094         (void) unlink(temp_path);
2095         (void) unlink("/run/systemd/shutdown/scheduled");
2096
2097         return log_error_errno(r, "Failed to write information about scheduled shutdowns: %m");
2098 }
2099
2100 static void reset_scheduled_shutdown(Manager *m) {
2101         assert(m);
2102
2103         m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2104         m->wall_message_timeout_source = sd_event_source_unref(m->wall_message_timeout_source);
2105         m->nologin_timeout_source = sd_event_source_unref(m->nologin_timeout_source);
2106
2107         m->scheduled_shutdown_type = mfree(m->scheduled_shutdown_type);
2108         m->scheduled_shutdown_timeout = 0;
2109         m->shutdown_dry_run = false;
2110
2111         if (m->unlink_nologin) {
2112                 (void) unlink_or_warn("/run/nologin");
2113                 m->unlink_nologin = false;
2114         }
2115
2116         (void) unlink("/run/systemd/shutdown/scheduled");
2117 }
2118
2119 static int manager_scheduled_shutdown_handler(
2120                         sd_event_source *s,
2121                         uint64_t usec,
2122                         void *userdata) {
2123
2124         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
2125         Manager *m = userdata;
2126         const char *target;
2127         int r;
2128
2129         assert(m);
2130
2131         if (isempty(m->scheduled_shutdown_type))
2132                 return 0;
2133
2134         if (streq(m->scheduled_shutdown_type, "poweroff"))
2135                 target = SPECIAL_POWEROFF_TARGET;
2136         else if (streq(m->scheduled_shutdown_type, "reboot"))
2137                 target = SPECIAL_REBOOT_TARGET;
2138         else if (streq(m->scheduled_shutdown_type, "halt"))
2139                 target = SPECIAL_HALT_TARGET;
2140         else
2141                 assert_not_reached("unexpected shutdown type");
2142
2143         /* Don't allow multiple jobs being executed at the same time */
2144         if (m->action_what > 0) {
2145                 r = -EALREADY;
2146                 log_error("Scheduled shutdown to %s failed: shutdown or sleep operation already in progress", target);
2147                 goto error;
2148         }
2149
2150         if (m->shutdown_dry_run) {
2151                 /* We do not process delay inhibitors here.  Otherwise, we
2152                  * would have to be considered "in progress" (like the check
2153                  * above) for some seconds after our admin has seen the final
2154                  * wall message. */
2155
2156                 bus_manager_log_shutdown(m, target);
2157                 log_info("Running in dry run, suppressing action.");
2158                 reset_scheduled_shutdown(m);
2159
2160                 return 0;
2161         }
2162
2163         r = bus_manager_shutdown_or_sleep_now_or_later(m, target, INHIBIT_SHUTDOWN, &error);
2164         if (r < 0) {
2165                 log_error_errno(r, "Scheduled shutdown to %s failed: %m", target);
2166                 goto error;
2167         }
2168
2169         return 0;
2170
2171 error:
2172         reset_scheduled_shutdown(m);
2173         return r;
2174 }
2175
2176 static int method_schedule_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2177         Manager *m = userdata;
2178         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2179         const char *action_multiple_sessions = NULL;
2180         const char *action_ignore_inhibit = NULL;
2181         const char *action = NULL;
2182         uint64_t elapse;
2183         char *type;
2184         int r;
2185         bool dry_run = false;
2186
2187         assert(m);
2188         assert(message);
2189
2190         r = sd_bus_message_read(message, "st", &type, &elapse);
2191         if (r < 0)
2192                 return r;
2193
2194         if (startswith(type, "dry-")) {
2195                 type += 4;
2196                 dry_run = true;
2197         }
2198
2199         if (streq(type, "poweroff")) {
2200                 action = "org.freedesktop.login1.power-off";
2201                 action_multiple_sessions = "org.freedesktop.login1.power-off-multiple-sessions";
2202                 action_ignore_inhibit = "org.freedesktop.login1.power-off-ignore-inhibit";
2203         } else if (streq(type, "reboot")) {
2204                 action = "org.freedesktop.login1.reboot";
2205                 action_multiple_sessions = "org.freedesktop.login1.reboot-multiple-sessions";
2206                 action_ignore_inhibit = "org.freedesktop.login1.reboot-ignore-inhibit";
2207         } else if (streq(type, "halt")) {
2208                 action = "org.freedesktop.login1.halt";
2209                 action_multiple_sessions = "org.freedesktop.login1.halt-multiple-sessions";
2210                 action_ignore_inhibit = "org.freedesktop.login1.halt-ignore-inhibit";
2211         } else
2212                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unsupported shutdown type");
2213
2214         r = verify_shutdown_creds(m, message, INHIBIT_SHUTDOWN, action, action_multiple_sessions,
2215                                   action_ignore_inhibit, 0, error);
2216         if (r != 0)
2217                 return r;
2218
2219         if (m->scheduled_shutdown_timeout_source) {
2220                 r = sd_event_source_set_time(m->scheduled_shutdown_timeout_source, elapse);
2221                 if (r < 0)
2222                         return log_error_errno(r, "sd_event_source_set_time() failed: %m");
2223
2224                 r = sd_event_source_set_enabled(m->scheduled_shutdown_timeout_source, SD_EVENT_ONESHOT);
2225                 if (r < 0)
2226                         return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
2227         } else {
2228                 r = sd_event_add_time(m->event, &m->scheduled_shutdown_timeout_source,
2229                                       CLOCK_REALTIME, elapse, 0, manager_scheduled_shutdown_handler, m);
2230                 if (r < 0)
2231                         return log_error_errno(r, "sd_event_add_time() failed: %m");
2232         }
2233
2234         r = free_and_strdup(&m->scheduled_shutdown_type, type);
2235         if (r < 0) {
2236                 m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2237                 return log_oom();
2238         }
2239
2240         m->shutdown_dry_run = dry_run;
2241
2242         if (m->nologin_timeout_source) {
2243                 r = sd_event_source_set_time(m->nologin_timeout_source, elapse);
2244                 if (r < 0)
2245                         return log_error_errno(r, "sd_event_source_set_time() failed: %m");
2246
2247                 r = sd_event_source_set_enabled(m->nologin_timeout_source, SD_EVENT_ONESHOT);
2248                 if (r < 0)
2249                         return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
2250         } else {
2251                 r = sd_event_add_time(m->event, &m->nologin_timeout_source,
2252                                       CLOCK_REALTIME, elapse - 5 * USEC_PER_MINUTE, 0, nologin_timeout_handler, m);
2253                 if (r < 0)
2254                         return log_error_errno(r, "sd_event_add_time() failed: %m");
2255         }
2256
2257         m->scheduled_shutdown_timeout = elapse;
2258
2259         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
2260         if (r >= 0) {
2261                 const char *tty = NULL;
2262
2263                 (void) sd_bus_creds_get_uid(creds, &m->scheduled_shutdown_uid);
2264                 (void) sd_bus_creds_get_tty(creds, &tty);
2265
2266                 r = free_and_strdup(&m->scheduled_shutdown_tty, tty);
2267                 if (r < 0) {
2268                         m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2269                         return log_oom();
2270                 }
2271         }
2272
2273         r = manager_setup_wall_message_timer(m);
2274         if (r < 0)
2275                 return r;
2276
2277         r = update_schedule_file(m);
2278         if (r < 0)
2279                 return r;
2280
2281         return sd_bus_reply_method_return(message, NULL);
2282 }
2283
2284 static int method_cancel_scheduled_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2285         Manager *m = userdata;
2286         bool cancelled;
2287
2288         assert(m);
2289         assert(message);
2290
2291         cancelled = m->scheduled_shutdown_type != NULL;
2292         reset_scheduled_shutdown(m);
2293
2294         if (cancelled && m->enable_wall_messages) {
2295                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2296                 _cleanup_free_ char *username = NULL;
2297                 const char *tty = NULL;
2298                 uid_t uid = 0;
2299                 int r;
2300
2301                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
2302                 if (r >= 0) {
2303                         (void) sd_bus_creds_get_uid(creds, &uid);
2304                         (void) sd_bus_creds_get_tty(creds, &tty);
2305                 }
2306
2307                 username = uid_to_name(uid);
2308                 utmp_wall("The system shutdown has been cancelled",
2309                           username, tty, logind_wall_tty_filter, m);
2310         }
2311
2312         return sd_bus_reply_method_return(message, "b", cancelled);
2313 }
2314
2315 static int method_can_shutdown_or_sleep(
2316                 Manager *m,
2317                 sd_bus_message *message,
2318                 InhibitWhat w,
2319                 const char *action,
2320                 const char *action_multiple_sessions,
2321                 const char *action_ignore_inhibit,
2322                 const char *sleep_verb,
2323                 sd_bus_error *error) {
2324
2325         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2326         HandleAction handle;
2327         bool multiple_sessions, challenge, blocked;
2328         const char *result = NULL;
2329         uid_t uid;
2330         int r;
2331
2332         assert(m);
2333         assert(message);
2334         assert(w >= 0);
2335         assert(w <= _INHIBIT_WHAT_MAX);
2336         assert(action);
2337         assert(action_multiple_sessions);
2338         assert(action_ignore_inhibit);
2339
2340         if (sleep_verb) {
2341                 r = can_sleep(sleep_verb);
2342                 if (IN_SET(r,  0, -ENOSPC))
2343                         return sd_bus_reply_method_return(message, "s", "na");
2344                 if (r < 0)
2345                         return r;
2346         }
2347
2348         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
2349         if (r < 0)
2350                 return r;
2351
2352         r = sd_bus_creds_get_euid(creds, &uid);
2353         if (r < 0)
2354                 return r;
2355
2356         r = have_multiple_sessions(m, uid);
2357         if (r < 0)
2358                 return r;
2359
2360         multiple_sessions = r > 0;
2361         blocked = manager_is_inhibited(m, w, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
2362
2363         handle = handle_action_from_string(sleep_verb);
2364         if (handle >= 0) {
2365                 const char *target;
2366
2367                 target = manager_target_for_action(handle);
2368                 if (target) {
2369                         _cleanup_free_ char *load_state = NULL;
2370
2371                         r = unit_load_state(m->bus, target, &load_state);
2372                         if (r < 0)
2373                                 return r;
2374
2375                         if (!streq(load_state, "loaded")) {
2376                                 result = "no";
2377                                 goto finish;
2378                         }
2379                 }
2380         }
2381
2382         if (multiple_sessions) {
2383                 r = bus_test_polkit(message, CAP_SYS_BOOT, action_multiple_sessions, NULL, UID_INVALID, &challenge, error);
2384                 if (r < 0)
2385                         return r;
2386
2387                 if (r > 0)
2388                         result = "yes";
2389                 else if (challenge)
2390                         result = "challenge";
2391                 else
2392                         result = "no";
2393         }
2394
2395         if (blocked) {
2396                 r = bus_test_polkit(message, CAP_SYS_BOOT, action_ignore_inhibit, NULL, UID_INVALID, &challenge, error);
2397                 if (r < 0)
2398                         return r;
2399
2400                 if (r > 0) {
2401                         if (!result)
2402                                 result = "yes";
2403                 } else if (challenge) {
2404                         if (!result || streq(result, "yes"))
2405                                 result = "challenge";
2406                 } else
2407                         result = "no";
2408         }
2409
2410         if (!multiple_sessions && !blocked) {
2411                 /* If neither inhibit nor multiple sessions
2412                  * apply then just check the normal policy */
2413
2414                 r = bus_test_polkit(message, CAP_SYS_BOOT, action, NULL, UID_INVALID, &challenge, error);
2415                 if (r < 0)
2416                         return r;
2417
2418                 if (r > 0)
2419                         result = "yes";
2420                 else if (challenge)
2421                         result = "challenge";
2422                 else
2423                         result = "no";
2424         }
2425
2426  finish:
2427         return sd_bus_reply_method_return(message, "s", result);
2428 }
2429
2430 static int method_can_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2431         Manager *m = userdata;
2432
2433         return method_can_shutdown_or_sleep(
2434                         m, message,
2435                         INHIBIT_SHUTDOWN,
2436                         "org.freedesktop.login1.power-off",
2437                         "org.freedesktop.login1.power-off-multiple-sessions",
2438                         "org.freedesktop.login1.power-off-ignore-inhibit",
2439                         NULL,
2440                         error);
2441 }
2442
2443 static int method_can_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2444         Manager *m = userdata;
2445
2446         return method_can_shutdown_or_sleep(
2447                         m, message,
2448                         INHIBIT_SHUTDOWN,
2449                         "org.freedesktop.login1.reboot",
2450                         "org.freedesktop.login1.reboot-multiple-sessions",
2451                         "org.freedesktop.login1.reboot-ignore-inhibit",
2452                         NULL,
2453                         error);
2454 }
2455
2456 static int method_can_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2457         Manager *m = userdata;
2458
2459         return method_can_shutdown_or_sleep(
2460                         m, message,
2461                         INHIBIT_SHUTDOWN,
2462                         "org.freedesktop.login1.halt",
2463                         "org.freedesktop.login1.halt-multiple-sessions",
2464                         "org.freedesktop.login1.halt-ignore-inhibit",
2465                         NULL,
2466                         error);
2467 }
2468
2469 static int method_can_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2470         Manager *m = userdata;
2471
2472         return method_can_shutdown_or_sleep(
2473                         m, message,
2474                         INHIBIT_SLEEP,
2475                         "org.freedesktop.login1.suspend",
2476                         "org.freedesktop.login1.suspend-multiple-sessions",
2477                         "org.freedesktop.login1.suspend-ignore-inhibit",
2478                         "suspend",
2479                         error);
2480 }
2481
2482 static int method_can_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2483         Manager *m = userdata;
2484
2485         return method_can_shutdown_or_sleep(
2486                         m, message,
2487                         INHIBIT_SLEEP,
2488                         "org.freedesktop.login1.hibernate",
2489                         "org.freedesktop.login1.hibernate-multiple-sessions",
2490                         "org.freedesktop.login1.hibernate-ignore-inhibit",
2491                         "hibernate",
2492                         error);
2493 }
2494
2495 static int method_can_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2496         Manager *m = userdata;
2497
2498         return method_can_shutdown_or_sleep(
2499                         m, message,
2500                         INHIBIT_SLEEP,
2501                         "org.freedesktop.login1.hibernate",
2502                         "org.freedesktop.login1.hibernate-multiple-sessions",
2503                         "org.freedesktop.login1.hibernate-ignore-inhibit",
2504                         "hybrid-sleep",
2505                         error);
2506 }
2507
2508 static int method_can_suspend_then_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2509         Manager *m = userdata;
2510
2511         return method_can_shutdown_or_sleep(
2512                         m, message,
2513                         INHIBIT_SLEEP,
2514                         "org.freedesktop.login1.hibernate",
2515                         "org.freedesktop.login1.hibernate-multiple-sessions",
2516                         "org.freedesktop.login1.hibernate-ignore-inhibit",
2517                         "suspend-then-hibernate",
2518                         error);
2519 }
2520
2521 static int property_get_reboot_parameter(
2522                 sd_bus *bus,
2523                 const char *path,
2524                 const char *interface,
2525                 const char *property,
2526                 sd_bus_message *reply,
2527                 void *userdata,
2528                 sd_bus_error *error) {
2529         _cleanup_free_ char *parameter = NULL;
2530         int r;
2531
2532         assert(bus);
2533         assert(reply);
2534         assert(userdata);
2535
2536         r = read_reboot_parameter(&parameter);
2537         if (r < 0)
2538                 return r;
2539
2540         return sd_bus_message_append(reply, "s", parameter);
2541 }
2542
2543 static int method_set_reboot_parameter(
2544                 sd_bus_message *message,
2545                 void *userdata,
2546                 sd_bus_error *error) {
2547
2548         Manager *m = userdata;
2549         const char *arg;
2550         int r;
2551
2552         assert(message);
2553         assert(m);
2554
2555         r = sd_bus_message_read(message, "s", &arg);
2556         if (r < 0)
2557                 return r;
2558
2559         r = detect_container();
2560         if (r < 0)
2561                 return r;
2562         if (r > 0)
2563                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED,
2564                                          "Reboot parameter not supported in containers, refusing.");
2565
2566         r = bus_verify_polkit_async(message,
2567                                     CAP_SYS_ADMIN,
2568                                     "org.freedesktop.login1.set-reboot-parameter",
2569                                     NULL,
2570                                     false,
2571                                     UID_INVALID,
2572                                     &m->polkit_registry,
2573                                     error);
2574         if (r < 0)
2575                 return r;
2576         if (r == 0)
2577                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2578
2579         r = update_reboot_parameter_and_warn(arg, false);
2580         if (r < 0)
2581                 return r;
2582
2583         return sd_bus_reply_method_return(message, NULL);
2584 }
2585
2586 static int method_can_reboot_parameter(
2587                 sd_bus_message *message,
2588                 void *userdata,
2589                 sd_bus_error *error) {
2590
2591         _unused_ Manager *m = userdata;
2592         int r;
2593
2594         assert(message);
2595         assert(m);
2596
2597         r = detect_container();
2598         if (r < 0)
2599                 return r;
2600         if (r > 0) /* Inside containers, specifying a reboot parameter, doesn't make much sense */
2601                 return sd_bus_reply_method_return(message, "s", "na");
2602
2603         return return_test_polkit(
2604                         message,
2605                         CAP_SYS_ADMIN,
2606                         "org.freedesktop.login1.set-reboot-parameter",
2607                         NULL,
2608                         UID_INVALID,
2609                         error);
2610 }
2611
2612 static int property_get_reboot_to_firmware_setup(
2613                 sd_bus *bus,
2614                 const char *path,
2615                 const char *interface,
2616                 const char *property,
2617                 sd_bus_message *reply,
2618                 void *userdata,
2619                 sd_bus_error *error) {
2620         int r;
2621
2622         assert(bus);
2623         assert(reply);
2624         assert(userdata);
2625
2626         r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
2627         if (r == -ENXIO) {
2628                 /* EFI case: let's see what is currently configured in the EFI variables */
2629                 r = efi_get_reboot_to_firmware();
2630                 if (r < 0 && r != -EOPNOTSUPP)
2631                         log_warning_errno(r, "Failed to determine reboot-to-firmware-setup state: %m");
2632         } else if (r < 0)
2633                 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
2634         else if (r > 0) {
2635                 /* Non-EFI case: let's see whether /run/systemd/reboot-to-firmware-setup exists. */
2636                 if (access("/run/systemd/reboot-to-firmware-setup", F_OK) < 0) {
2637                         if (errno != ENOENT)
2638                                 log_warning_errno(errno, "Failed to check whether /run/systemd/reboot-to-firmware-setup exists: %m");
2639
2640                         r = false;
2641                 } else
2642                         r = true;
2643         }
2644
2645         return sd_bus_message_append(reply, "b", r > 0);
2646 }
2647
2648 static int method_set_reboot_to_firmware_setup(
2649                 sd_bus_message *message,
2650                 void *userdata,
2651                 sd_bus_error *error) {
2652
2653         Manager *m = userdata;
2654         bool use_efi;
2655         int b, r;
2656
2657         assert(message);
2658         assert(m);
2659
2660         r = sd_bus_message_read(message, "b", &b);
2661         if (r < 0)
2662                 return r;
2663
2664         r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
2665         if (r == -ENXIO) {
2666                 /* EFI case: let's see what the firmware supports */
2667
2668                 r = efi_reboot_to_firmware_supported();
2669                 if (r == -EOPNOTSUPP)
2670                         return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Firmware does not support boot into firmware.");
2671                 if (r < 0)
2672                         return r;
2673
2674                 use_efi = true;
2675
2676         } else if (r <= 0) {
2677                 /* non-EFI case: $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP is set to off */
2678
2679                 if (r < 0)
2680                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
2681
2682                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Firmware does not support boot into firmware.");
2683         } else
2684                 /* non-EFI case: $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP is set to on */
2685                 use_efi = false;
2686
2687         r = bus_verify_polkit_async(message,
2688                                     CAP_SYS_ADMIN,
2689                                     "org.freedesktop.login1.set-reboot-to-firmware-setup",
2690                                     NULL,
2691                                     false,
2692                                     UID_INVALID,
2693                                     &m->polkit_registry,
2694                                     error);
2695         if (r < 0)
2696                 return r;
2697         if (r == 0)
2698                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2699
2700         if (use_efi) {
2701                 r = efi_set_reboot_to_firmware(b);
2702                 if (r < 0)
2703                         return r;
2704         } else {
2705                 if (b) {
2706                         r = touch("/run/systemd/reboot-to-firmware-setup");
2707                         if (r < 0)
2708                                 return r;
2709                 } else {
2710                         if (unlink("/run/systemd/reboot-to-firmware-setup") < 0 && errno != ENOENT)
2711                                 return -errno;
2712                 }
2713         }
2714
2715         return sd_bus_reply_method_return(message, NULL);
2716 }
2717
2718 static int method_can_reboot_to_firmware_setup(
2719                 sd_bus_message *message,
2720                 void *userdata,
2721                 sd_bus_error *error) {
2722
2723         _unused_ Manager *m = userdata;
2724         int r;
2725
2726         assert(message);
2727         assert(m);
2728
2729         r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
2730         if (r == -ENXIO) {
2731                 /* EFI case: let's see what the firmware supports */
2732
2733                 r = efi_reboot_to_firmware_supported();
2734                 if (r < 0) {
2735                         if (r != -EOPNOTSUPP)
2736                                 log_warning_errno(r, "Failed to determine whether reboot to firmware is supported: %m");
2737
2738                         return sd_bus_reply_method_return(message, "s", "na");
2739                 }
2740
2741         } else if (r <= 0) {
2742                 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP */
2743
2744                 if (r < 0)
2745                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
2746
2747                 return sd_bus_reply_method_return(message, "s", "na");
2748         }
2749
2750         return return_test_polkit(
2751                         message,
2752                         CAP_SYS_ADMIN,
2753                         "org.freedesktop.login1.set-reboot-to-firmware-setup",
2754                         NULL,
2755                         UID_INVALID,
2756                         error);
2757 }
2758
2759 static int property_get_reboot_to_boot_loader_menu(
2760                 sd_bus *bus,
2761                 const char *path,
2762                 const char *interface,
2763                 const char *property,
2764                 sd_bus_message *reply,
2765                 void *userdata,
2766                 sd_bus_error *error) {
2767
2768         uint64_t x = UINT64_MAX;
2769         int r;
2770
2771         assert(bus);
2772         assert(reply);
2773         assert(userdata);
2774
2775         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
2776         if (r == -ENXIO) {
2777                 /* EFI case: returns the current value of LoaderConfigTimeoutOneShot. Three cases are distuingished:
2778                  *
2779                  *     1. Variable not set, boot into boot loader menu is not enabled (we return UINT64_MAX to the user)
2780                  *     2. Variable set to "0", boot into boot loader menu is enabled with no timeout (we return 0 to the user)
2781                  *     3. Variable set to numeric value formatted in ASCII, boot into boot loader menu with the specified timeout in seconds
2782                  */
2783
2784                 r = efi_loader_get_config_timeout_one_shot(&x);
2785                 if (r < 0) {
2786                         if (r != -ENOENT)
2787                                 log_warning_errno(r, "Failed to read LoaderConfigTimeoutOneShot variable, ignoring: %m");
2788                 }
2789
2790         } else if (r < 0)
2791                 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
2792         else if (r > 0) {
2793                 _cleanup_free_ char *v = NULL;
2794
2795                 /* Non-EFI case, let's process /run/systemd/reboot-to-boot-loader-menu. */
2796
2797                 r = read_one_line_file("/run/systemd/reboot-to-boot-loader-menu", &v);
2798                 if (r < 0) {
2799                         if (r != -ENOENT)
2800                                 log_warning_errno(r, "Failed to read /run/systemd/reboot-to-boot-loader-menu: %m");
2801                 } else {
2802                         r = safe_atou64(v, &x);
2803                         if (r < 0)
2804                                 log_warning_errno(r, "Failed to parse /run/systemd/reboot-to-boot-loader-menu: %m");
2805                 }
2806         }
2807
2808         return sd_bus_message_append(reply, "t", x);
2809 }
2810
2811 static int method_set_reboot_to_boot_loader_menu(
2812                 sd_bus_message *message,
2813                 void *userdata,
2814                 sd_bus_error *error) {
2815
2816         Manager *m = userdata;
2817         bool use_efi;
2818         uint64_t x;
2819         int r;
2820
2821         assert(message);
2822         assert(m);
2823
2824         r = sd_bus_message_read(message, "t", &x);
2825         if (r < 0)
2826                 return r;
2827
2828         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
2829         if (r == -ENXIO) {
2830                 uint64_t features;
2831
2832                 /* EFI case: let's see if booting into boot loader menu is supported. */
2833
2834                 r = efi_loader_get_features(&features);
2835                 if (r < 0)
2836                         log_warning_errno(r, "Failed to determine whether reboot to boot loader menu is supported: %m");
2837                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT))
2838                         return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader does not support boot into boot loader menu.");
2839
2840                 use_efi = true;
2841
2842         } else if (r <= 0) {
2843                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU is set to off */
2844
2845                 if (r < 0)
2846                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
2847
2848                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader does not support boot into boot loader menu.");
2849         } else
2850                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU is set to on */
2851                 use_efi = false;
2852
2853         r = bus_verify_polkit_async(message,
2854                                     CAP_SYS_ADMIN,
2855                                     "org.freedesktop.login1.set-reboot-to-boot-loader-menu",
2856                                     NULL,
2857                                     false,
2858                                     UID_INVALID,
2859                                     &m->polkit_registry,
2860                                     error);
2861         if (r < 0)
2862                 return r;
2863         if (r == 0)
2864                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2865
2866         if (use_efi) {
2867                 if (x == UINT64_MAX)
2868                         r = efi_set_variable(EFI_VENDOR_LOADER, "LoaderConfigTimeoutOneShot", NULL, 0);
2869                 else {
2870                         char buf[DECIMAL_STR_MAX(uint64_t) + 1];
2871                         xsprintf(buf, "%" PRIu64, DIV_ROUND_UP(x, USEC_PER_SEC)); /* second granularity */
2872
2873                         r = efi_set_variable_string(EFI_VENDOR_LOADER, "LoaderConfigTimeoutOneShot", buf);
2874                 }
2875                 if (r < 0)
2876                         return r;
2877         } else {
2878                 if (x == UINT64_MAX) {
2879                         if (unlink("/run/systemd/reboot-to-boot-loader-menu") < 0 && errno != ENOENT)
2880                                 return -errno;
2881                 } else {
2882                         char buf[DECIMAL_STR_MAX(uint64_t) + 1];
2883
2884                         xsprintf(buf, "%" PRIu64, x); /* µs granularity */
2885
2886                         r = write_string_file_atomic_label("/run/systemd/reboot-to-boot-loader-menu", buf);
2887                         if (r < 0)
2888                                 return r;
2889                 }
2890         }
2891
2892         return sd_bus_reply_method_return(message, NULL);
2893 }
2894
2895 static int method_can_reboot_to_boot_loader_menu(
2896                 sd_bus_message *message,
2897                 void *userdata,
2898                 sd_bus_error *error) {
2899
2900         _unused_ Manager *m = userdata;
2901         int r;
2902
2903         assert(message);
2904         assert(m);
2905
2906         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
2907         if (r == -ENXIO) {
2908                 uint64_t features = 0;
2909
2910                 /* EFI case, let's see if booting into boot loader menu is supported. */
2911
2912                 r = efi_loader_get_features(&features);
2913                 if (r < 0)
2914                         log_warning_errno(r, "Failed to determine whether reboot to boot loader menu is supported: %m");
2915                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT))
2916                         return sd_bus_reply_method_return(message, "s", "na");
2917
2918         } else if (r <= 0) {
2919                 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU */
2920
2921                 if (r < 0)
2922                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
2923
2924                 return sd_bus_reply_method_return(message, "s", "na");
2925         }
2926
2927         return return_test_polkit(
2928                         message,
2929                         CAP_SYS_ADMIN,
2930                         "org.freedesktop.login1.set-reboot-to-boot-loader-menu",
2931                         NULL,
2932                         UID_INVALID,
2933                         error);
2934 }
2935
2936 static int property_get_reboot_to_boot_loader_entry(
2937                 sd_bus *bus,
2938                 const char *path,
2939                 const char *interface,
2940                 const char *property,
2941                 sd_bus_message *reply,
2942                 void *userdata,
2943                 sd_bus_error *error) {
2944
2945         _cleanup_free_ char *v = NULL;
2946         Manager *m = userdata;
2947         const char *x = NULL;
2948         int r;
2949
2950         assert(bus);
2951         assert(reply);
2952         assert(m);
2953
2954         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
2955         if (r == -ENXIO) {
2956                 /* EFI case: let's read the LoaderEntryOneShot variable */
2957
2958                 r = efi_loader_update_entry_one_shot_cache(&m->efi_loader_entry_one_shot, &m->efi_loader_entry_one_shot_stat);
2959                 if (r < 0) {
2960                         if (r != -ENOENT)
2961                                 log_warning_errno(r, "Failed to read LoaderEntryOneShot variable, ignoring: %m");
2962                 } else
2963                         x = m->efi_loader_entry_one_shot;
2964
2965         } else if (r < 0)
2966                 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
2967         else if (r > 0) {
2968
2969                 /* Non-EFI case, let's process /run/systemd/reboot-to-boot-loader-entry. */
2970
2971                 r = read_one_line_file("/run/systemd/reboot-to-boot-loader-entry", &v);
2972                 if (r < 0) {
2973                         if (r != -ENOENT)
2974                                 log_warning_errno(r, "Failed to read /run/systemd/reboot-to-boot-loader-entry, ignoring: %m");
2975                 } else if (!efi_loader_entry_name_valid(v))
2976                         log_warning("/run/systemd/reboot-to-boot-loader-entry is not valid, ignoring.");
2977                 else
2978                         x = v;
2979         }
2980
2981         return sd_bus_message_append(reply, "s", x);
2982 }
2983
2984 static int boot_loader_entry_exists(Manager *m, const char *id) {
2985         _cleanup_(boot_config_free) BootConfig config = {};
2986         int r;
2987
2988         assert(m);
2989         assert(id);
2990
2991         r = boot_entries_load_config_auto(NULL, NULL, &config);
2992         if (r < 0 && r != -ENOKEY) /* don't complain if no GPT is found, hence skip ENOKEY */
2993                 return r;
2994
2995         r = manager_read_efi_boot_loader_entries(m);
2996         if (r >= 0)
2997                 (void) boot_entries_augment_from_loader(&config, m->efi_boot_loader_entries, true);
2998
2999         return boot_config_has_entry(&config, id);
3000 }
3001
3002 static int method_set_reboot_to_boot_loader_entry(
3003                 sd_bus_message *message,
3004                 void *userdata,
3005                 sd_bus_error *error) {
3006
3007         Manager *m = userdata;
3008         bool use_efi;
3009         const char *v;
3010         int r;
3011
3012         assert(message);
3013         assert(m);
3014
3015         r = sd_bus_message_read(message, "s", &v);
3016         if (r < 0)
3017                 return r;
3018
3019         if (isempty(v))
3020                 v = NULL;
3021         else if (efi_loader_entry_name_valid(v)) {
3022                 r = boot_loader_entry_exists(m, v);
3023                 if (r < 0)
3024                         return r;
3025                 if (r == 0)
3026                         return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader entry '%s' is not known.", v);
3027         } else
3028                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Boot loader entry name '%s' is not valid, refusing.", v);
3029
3030         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
3031         if (r == -ENXIO) {
3032                 uint64_t features;
3033
3034                 /* EFI case: let's see if booting into boot loader entry is supported. */
3035
3036                 r = efi_loader_get_features(&features);
3037                 if (r < 0)
3038                         log_warning_errno(r, "Failed to determine whether reboot into boot loader entry is supported: %m");
3039                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_ENTRY_ONESHOT))
3040                         return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Loader does not support boot into boot loader entry.");
3041
3042                 use_efi = true;
3043
3044         } else if (r <= 0) {
3045                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY is set to off */
3046
3047                 if (r < 0)
3048                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
3049
3050                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Loader does not support boot into boot loader entry.");
3051         } else
3052                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY is set to on */
3053                 use_efi = false;
3054
3055         r = bus_verify_polkit_async(message,
3056                                     CAP_SYS_ADMIN,
3057                                     "org.freedesktop.login1.set-reboot-to-boot-loader-entry",
3058                                     NULL,
3059                                     false,
3060                                     UID_INVALID,
3061                                     &m->polkit_registry,
3062                                     error);
3063         if (r < 0)
3064                 return r;
3065         if (r == 0)
3066                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
3067
3068         if (use_efi) {
3069                 if (isempty(v))
3070                         /* Delete item */
3071                         r = efi_set_variable(EFI_VENDOR_LOADER, "LoaderEntryOneShot", NULL, 0);
3072                 else
3073                         r = efi_set_variable_string(EFI_VENDOR_LOADER, "LoaderEntryOneShot", v);
3074                 if (r < 0)
3075                         return r;
3076         } else {
3077                 if (isempty(v)) {
3078                         if (unlink("/run/systemd/reboot-to-boot-loader-entry") < 0 && errno != ENOENT)
3079                                 return -errno;
3080                 } else {
3081                         r = write_string_file_atomic_label("/run/systemd/reboot-boot-to-loader-entry", v);
3082                         if (r < 0)
3083                                 return r;
3084                 }
3085         }
3086
3087         return sd_bus_reply_method_return(message, NULL);
3088 }
3089
3090 static int method_can_reboot_to_boot_loader_entry(
3091                 sd_bus_message *message,
3092                 void *userdata,
3093                 sd_bus_error *error) {
3094
3095         _unused_ Manager *m = userdata;
3096         int r;
3097
3098         assert(message);
3099         assert(m);
3100
3101         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
3102         if (r == -ENXIO) {
3103                 uint64_t features = 0;
3104
3105                 /* EFI case, let's see if booting into boot loader entry is supported. */
3106
3107                 r = efi_loader_get_features(&features);
3108                 if (r < 0)
3109                         log_warning_errno(r, "Failed to determine whether reboot to boot loader entry is supported: %m");
3110                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_ENTRY_ONESHOT))
3111                         return sd_bus_reply_method_return(message, "s", "na");
3112
3113         } else if (r <= 0) {
3114                 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY */
3115
3116                 if (r < 0)
3117                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
3118
3119                 return sd_bus_reply_method_return(message, "s", "na");
3120         }
3121
3122         return return_test_polkit(
3123                         message,
3124                         CAP_SYS_ADMIN,
3125                         "org.freedesktop.login1.set-reboot-to-boot-loader-entry",
3126                         NULL,
3127                         UID_INVALID,
3128                         error);
3129 }
3130
3131 static int property_get_boot_loader_entries(
3132                 sd_bus *bus,
3133                 const char *path,
3134                 const char *interface,
3135                 const char *property,
3136                 sd_bus_message *reply,
3137                 void *userdata,
3138                 sd_bus_error *error) {
3139
3140         _cleanup_(boot_config_free) BootConfig config = {};
3141         Manager *m = userdata;
3142         size_t i;
3143         int r;
3144
3145         assert(bus);
3146         assert(reply);
3147         assert(m);
3148
3149         r = boot_entries_load_config_auto(NULL, NULL, &config);
3150         if (r < 0 && r != -ENOKEY) /* don't complain if there's no GPT found */
3151                 return r;
3152
3153         r = manager_read_efi_boot_loader_entries(m);
3154         if (r >= 0)
3155                 (void) boot_entries_augment_from_loader(&config, m->efi_boot_loader_entries, true);
3156
3157         r = sd_bus_message_open_container(reply, 'a', "s");
3158         if (r < 0)
3159                 return r;
3160
3161         for (i = 0; i < config.n_entries; i++) {
3162                 BootEntry *e = config.entries + i;
3163
3164                 r = sd_bus_message_append(reply, "s", e->id);
3165                 if (r < 0)
3166                         return r;
3167         }
3168
3169         return sd_bus_message_close_container(reply);
3170 }
3171
3172 static int method_set_wall_message(
3173                 sd_bus_message *message,
3174                 void *userdata,
3175                 sd_bus_error *error) {
3176
3177         int r;
3178         Manager *m = userdata;
3179         char *wall_message;
3180         unsigned enable_wall_messages;
3181
3182         assert(message);
3183         assert(m);
3184
3185         r = sd_bus_message_read(message, "sb", &wall_message, &enable_wall_messages);
3186         if (r < 0)
3187                 return r;
3188
3189         /* Short-circuit the operation if the desired state is already in place, to
3190          * avoid an unnecessary polkit permission check. */
3191         if (streq_ptr(m->wall_message, empty_to_null(wall_message)) &&
3192             m->enable_wall_messages == enable_wall_messages)
3193                 goto done;
3194
3195         r = bus_verify_polkit_async(message,
3196                                     CAP_SYS_ADMIN,
3197                                     "org.freedesktop.login1.set-wall-message",
3198                                     NULL,
3199                                     false,
3200                                     UID_INVALID,
3201                                     &m->polkit_registry,
3202                                     error);
3203         if (r < 0)
3204                 return r;
3205         if (r == 0)
3206                 return 1; /* Will call us back */
3207
3208         r = free_and_strdup(&m->wall_message, empty_to_null(wall_message));
3209         if (r < 0)
3210                 return log_oom();
3211
3212         m->enable_wall_messages = enable_wall_messages;
3213
3214  done:
3215         return sd_bus_reply_method_return(message, NULL);
3216 }
3217
3218 static int method_inhibit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3219         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
3220         const char *who, *why, *what, *mode;
3221         _cleanup_free_ char *id = NULL;
3222         _cleanup_close_ int fifo_fd = -1;
3223         Manager *m = userdata;
3224         InhibitMode mm;
3225         InhibitWhat w;
3226         pid_t pid;
3227         uid_t uid;
3228         int r;
3229
3230         assert(message);
3231         assert(m);
3232
3233         r = sd_bus_message_read(message, "ssss", &what, &who, &why, &mode);
3234         if (r < 0)
3235                 return r;
3236
3237         w = inhibit_what_from_string(what);
3238         if (w <= 0)
3239                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3240                                          "Invalid what specification %s", what);
3241
3242         mm = inhibit_mode_from_string(mode);
3243         if (mm < 0)
3244                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3245                                          "Invalid mode specification %s", mode);
3246
3247         /* Delay is only supported for shutdown/sleep */
3248         if (mm == INHIBIT_DELAY && (w & ~(INHIBIT_SHUTDOWN|INHIBIT_SLEEP)))
3249                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3250                                          "Delay inhibitors only supported for shutdown and sleep");
3251
3252         /* Don't allow taking delay locks while we are already
3253          * executing the operation. We shouldn't create the impression
3254          * that the lock was successful if the machine is about to go
3255          * down/suspend any moment. */
3256         if (m->action_what & w)
3257                 return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS,
3258                                          "The operation inhibition has been requested for is already running");
3259
3260         r = bus_verify_polkit_async(
3261                         message,
3262                         CAP_SYS_BOOT,
3263                         w == INHIBIT_SHUTDOWN             ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-shutdown" : "org.freedesktop.login1.inhibit-delay-shutdown") :
3264                         w == INHIBIT_SLEEP                ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-sleep"    : "org.freedesktop.login1.inhibit-delay-sleep") :
3265                         w == INHIBIT_IDLE                 ? "org.freedesktop.login1.inhibit-block-idle" :
3266                         w == INHIBIT_HANDLE_POWER_KEY     ? "org.freedesktop.login1.inhibit-handle-power-key" :
3267                         w == INHIBIT_HANDLE_SUSPEND_KEY   ? "org.freedesktop.login1.inhibit-handle-suspend-key" :
3268                         w == INHIBIT_HANDLE_REBOOT_KEY    ? "org.freedesktop.login1.inhibit-handle-reboot-key" :
3269                         w == INHIBIT_HANDLE_HIBERNATE_KEY ? "org.freedesktop.login1.inhibit-handle-hibernate-key" :
3270                                                             "org.freedesktop.login1.inhibit-handle-lid-switch",
3271                         NULL,
3272                         false,
3273                         UID_INVALID,
3274                         &m->polkit_registry,
3275                         error);
3276         if (r < 0)
3277                 return r;
3278         if (r == 0)
3279                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
3280
3281         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID|SD_BUS_CREDS_PID, &creds);
3282         if (r < 0)
3283                 return r;
3284
3285         r = sd_bus_creds_get_euid(creds, &uid);
3286         if (r < 0)
3287                 return r;
3288
3289         r = sd_bus_creds_get_pid(creds, &pid);
3290         if (r < 0)
3291                 return r;
3292
3293         if (hashmap_size(m->inhibitors) >= m->inhibitors_max)
3294                 return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED,
3295                                          "Maximum number of inhibitors (%" PRIu64 ") reached, refusing further inhibitors.",
3296                                          m->inhibitors_max);
3297
3298         do {
3299                 id = mfree(id);
3300
3301                 if (asprintf(&id, "%lu", ++m->inhibit_counter) < 0)
3302                         return -ENOMEM;
3303
3304         } while (hashmap_get(m->inhibitors, id));
3305
3306         _cleanup_(inhibitor_freep) Inhibitor *i = NULL;
3307         r = manager_add_inhibitor(m, id, &i);
3308         if (r < 0)
3309                 return r;
3310
3311         i->what = w;
3312         i->mode = mm;
3313         i->pid = pid;
3314         i->uid = uid;
3315         i->why = strdup(why);
3316         i->who = strdup(who);
3317
3318         if (!i->why || !i->who)
3319                 return -ENOMEM;
3320
3321         fifo_fd = inhibitor_create_fifo(i);
3322         if (fifo_fd < 0)
3323                 return fifo_fd;
3324
3325         r = inhibitor_start(i);
3326         if (r < 0)
3327                 return r;
3328         TAKE_PTR(i);
3329
3330         return sd_bus_reply_method_return(message, "h", fifo_fd);
3331 }
3332
3333 static const sd_bus_vtable manager_vtable[] = {
3334         SD_BUS_VTABLE_START(0),
3335
3336         SD_BUS_WRITABLE_PROPERTY("EnableWallMessages", "b", NULL, NULL, offsetof(Manager, enable_wall_messages), 0),
3337         SD_BUS_WRITABLE_PROPERTY("WallMessage", "s", NULL, NULL, offsetof(Manager, wall_message), 0),
3338
3339         SD_BUS_PROPERTY("NAutoVTs", "u", NULL, offsetof(Manager, n_autovts), SD_BUS_VTABLE_PROPERTY_CONST),
3340         SD_BUS_PROPERTY("KillOnlyUsers", "as", NULL, offsetof(Manager, kill_only_users), SD_BUS_VTABLE_PROPERTY_CONST),
3341         SD_BUS_PROPERTY("KillExcludeUsers", "as", NULL, offsetof(Manager, kill_exclude_users), SD_BUS_VTABLE_PROPERTY_CONST),
3342         SD_BUS_PROPERTY("KillUserProcesses", "b", NULL, offsetof(Manager, kill_user_processes), SD_BUS_VTABLE_PROPERTY_CONST),
3343         SD_BUS_PROPERTY("RebootParameter", "s", property_get_reboot_parameter, 0, 0),
3344         SD_BUS_PROPERTY("RebootToFirmwareSetup", "b", property_get_reboot_to_firmware_setup, 0, 0),
3345         SD_BUS_PROPERTY("RebootToBootLoaderMenu", "t", property_get_reboot_to_boot_loader_menu, 0, 0),
3346         SD_BUS_PROPERTY("RebootToBootLoaderEntry", "s", property_get_reboot_to_boot_loader_entry, 0, 0),
3347         SD_BUS_PROPERTY("BootLoaderEntries", "as", property_get_boot_loader_entries, 0, SD_BUS_VTABLE_PROPERTY_CONST),
3348         SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3349         SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3350         SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3351         SD_BUS_PROPERTY("BlockInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3352         SD_BUS_PROPERTY("DelayInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3353         SD_BUS_PROPERTY("InhibitDelayMaxUSec", "t", NULL, offsetof(Manager, inhibit_delay_max), SD_BUS_VTABLE_PROPERTY_CONST),
3354         SD_BUS_PROPERTY("UserStopDelayUSec", "t", NULL, offsetof(Manager, user_stop_delay), SD_BUS_VTABLE_PROPERTY_CONST),
3355         SD_BUS_PROPERTY("HandlePowerKey", "s", property_get_handle_action, offsetof(Manager, handle_power_key), SD_BUS_VTABLE_PROPERTY_CONST),
3356         SD_BUS_PROPERTY("HandleSuspendKey", "s", property_get_handle_action, offsetof(Manager, handle_suspend_key), SD_BUS_VTABLE_PROPERTY_CONST),
3357         SD_BUS_PROPERTY("HandleHibernateKey", "s", property_get_handle_action, offsetof(Manager, handle_hibernate_key), SD_BUS_VTABLE_PROPERTY_CONST),
3358         SD_BUS_PROPERTY("HandleLidSwitch", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch), SD_BUS_VTABLE_PROPERTY_CONST),
3359         SD_BUS_PROPERTY("HandleLidSwitchExternalPower", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch_ep), SD_BUS_VTABLE_PROPERTY_CONST),
3360         SD_BUS_PROPERTY("HandleLidSwitchDocked", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch_docked), SD_BUS_VTABLE_PROPERTY_CONST),
3361         SD_BUS_PROPERTY("HoldoffTimeoutUSec", "t", NULL, offsetof(Manager, holdoff_timeout_usec), SD_BUS_VTABLE_PROPERTY_CONST),
3362         SD_BUS_PROPERTY("IdleAction", "s", property_get_handle_action, offsetof(Manager, idle_action), SD_BUS_VTABLE_PROPERTY_CONST),
3363         SD_BUS_PROPERTY("IdleActionUSec", "t", NULL, offsetof(Manager, idle_action_usec), SD_BUS_VTABLE_PROPERTY_CONST),
3364         SD_BUS_PROPERTY("PreparingForShutdown", "b", property_get_preparing, 0, 0),
3365         SD_BUS_PROPERTY("PreparingForSleep", "b", property_get_preparing, 0, 0),
3366         SD_BUS_PROPERTY("ScheduledShutdown", "(st)", property_get_scheduled_shutdown, 0, 0),
3367         SD_BUS_PROPERTY("Docked", "b", property_get_docked, 0, 0),
3368         SD_BUS_PROPERTY("LidClosed", "b", property_get_lid_closed, 0, 0),
3369         SD_BUS_PROPERTY("OnExternalPower", "b", property_get_on_external_power, 0, 0),
3370         SD_BUS_PROPERTY("RemoveIPC", "b", bus_property_get_bool, offsetof(Manager, remove_ipc), SD_BUS_VTABLE_PROPERTY_CONST),
3371         SD_BUS_PROPERTY("RuntimeDirectorySize", "t", NULL, offsetof(Manager, runtime_dir_size), SD_BUS_VTABLE_PROPERTY_CONST),
3372         SD_BUS_PROPERTY("RuntimeDirectoryInodesMax", "t", NULL, offsetof(Manager, runtime_dir_inodes), SD_BUS_VTABLE_PROPERTY_CONST),
3373         SD_BUS_PROPERTY("InhibitorsMax", "t", NULL, offsetof(Manager, inhibitors_max), SD_BUS_VTABLE_PROPERTY_CONST),
3374         SD_BUS_PROPERTY("NCurrentInhibitors", "t", property_get_hashmap_size, offsetof(Manager, inhibitors), 0),
3375         SD_BUS_PROPERTY("SessionsMax", "t", NULL, offsetof(Manager, sessions_max), SD_BUS_VTABLE_PROPERTY_CONST),
3376         SD_BUS_PROPERTY("NCurrentSessions", "t", property_get_hashmap_size, offsetof(Manager, sessions), 0),
3377         SD_BUS_PROPERTY("UserTasksMax", "t", property_get_compat_user_tasks_max, 0, SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
3378
3379         SD_BUS_METHOD_WITH_NAMES("GetSession",
3380                                  "s",
3381                                  SD_BUS_PARAM(session_id),
3382                                  "o",
3383                                  SD_BUS_PARAM(object_path),
3384                                  method_get_session,
3385                                  SD_BUS_VTABLE_UNPRIVILEGED),
3386         SD_BUS_METHOD_WITH_NAMES("GetSessionByPID",
3387                                  "u",
3388                                  SD_BUS_PARAM(pid),
3389                                  "o",
3390                                  SD_BUS_PARAM(object_path),
3391                                  method_get_session_by_pid,
3392                                  SD_BUS_VTABLE_UNPRIVILEGED),
3393         SD_BUS_METHOD_WITH_NAMES("GetUser",
3394                                  "u",
3395                                  SD_BUS_PARAM(uid),
3396                                  "o",
3397                                  SD_BUS_PARAM(object_path),
3398                                  method_get_user,
3399                                  SD_BUS_VTABLE_UNPRIVILEGED),
3400         SD_BUS_METHOD_WITH_NAMES("GetUserByPID",
3401                                  "u",
3402                                  SD_BUS_PARAM(pid),
3403                                  "o",
3404                                  SD_BUS_PARAM(object_path),
3405                                  method_get_user_by_pid,
3406                                  SD_BUS_VTABLE_UNPRIVILEGED),
3407         SD_BUS_METHOD_WITH_NAMES("GetSeat",
3408                                  "s",
3409                                  SD_BUS_PARAM(seat_id),
3410                                  "o",
3411                                  SD_BUS_PARAM(object_path),
3412                                  method_get_seat,
3413                                  SD_BUS_VTABLE_UNPRIVILEGED),
3414         SD_BUS_METHOD_WITH_NAMES("ListSessions",
3415                                  NULL,,
3416                                  "a(susso)",
3417                                  SD_BUS_PARAM(sessions),
3418                                  method_list_sessions,
3419                                  SD_BUS_VTABLE_UNPRIVILEGED),
3420         SD_BUS_METHOD_WITH_NAMES("ListUsers",
3421                                  NULL,,
3422                                  "a(uso)",
3423                                  SD_BUS_PARAM(users),
3424                                  method_list_users,
3425                                  SD_BUS_VTABLE_UNPRIVILEGED),
3426         SD_BUS_METHOD_WITH_NAMES("ListSeats",
3427                                  NULL,,
3428                                  "a(so)",
3429                                  SD_BUS_PARAM(seats),
3430                                  method_list_seats,
3431                                  SD_BUS_VTABLE_UNPRIVILEGED),
3432         SD_BUS_METHOD_WITH_NAMES("ListInhibitors",
3433                                  NULL,,
3434                                  "a(ssssuu)",
3435                                  SD_BUS_PARAM(inhibitors),
3436                                  method_list_inhibitors,
3437                                  SD_BUS_VTABLE_UNPRIVILEGED),
3438         SD_BUS_METHOD_WITH_NAMES("CreateSession",
3439                                  "uusssssussbssa(sv)",
3440                                  SD_BUS_PARAM(uid)
3441                                  SD_BUS_PARAM(pid)
3442                                  SD_BUS_PARAM(service)
3443                                  SD_BUS_PARAM(type)
3444                                  SD_BUS_PARAM(class)
3445                                  SD_BUS_PARAM(desktop)
3446                                  SD_BUS_PARAM(seat_id)
3447                                  SD_BUS_PARAM(vtnr)
3448                                  SD_BUS_PARAM(tty)
3449                                  SD_BUS_PARAM(display)
3450                                  SD_BUS_PARAM(remote)
3451                                  SD_BUS_PARAM(remote_user)
3452                                  SD_BUS_PARAM(remote_host)
3453                                  SD_BUS_PARAM(properties),
3454                                  "soshusub",
3455                                  SD_BUS_PARAM(session_id)
3456                                  SD_BUS_PARAM(object_path)
3457                                  SD_BUS_PARAM(runtime_path)
3458                                  SD_BUS_PARAM(fifo_fd)
3459                                  SD_BUS_PARAM(uid)
3460                                  SD_BUS_PARAM(seat_id)
3461                                  SD_BUS_PARAM(vtnr)
3462                                  SD_BUS_PARAM(existing),
3463                                  method_create_session,
3464                                  0),
3465         SD_BUS_METHOD_WITH_NAMES("ReleaseSession",
3466                                  "s",
3467                                  SD_BUS_PARAM(session_id),
3468                                  NULL,,
3469                                  method_release_session,
3470                                  0),
3471         SD_BUS_METHOD_WITH_NAMES("ActivateSession",
3472                                  "s",
3473                                  SD_BUS_PARAM(session_id),
3474                                  NULL,,
3475                                  method_activate_session,
3476                                  SD_BUS_VTABLE_UNPRIVILEGED),
3477         SD_BUS_METHOD_WITH_NAMES("ActivateSessionOnSeat",
3478                                  "ss",
3479                                  SD_BUS_PARAM(session_id)
3480                                  SD_BUS_PARAM(seat_id),
3481                                  NULL,,
3482                                  method_activate_session_on_seat,
3483                                  SD_BUS_VTABLE_UNPRIVILEGED),
3484         SD_BUS_METHOD_WITH_NAMES("LockSession",
3485                                  "s",
3486                                  SD_BUS_PARAM(session_id),
3487                                  NULL,,
3488                                  method_lock_session,
3489                                  SD_BUS_VTABLE_UNPRIVILEGED),
3490         SD_BUS_METHOD_WITH_NAMES("UnlockSession",
3491                                  "s",
3492                                  SD_BUS_PARAM(session_id),
3493                                  NULL,,
3494                                  method_lock_session,
3495                                  SD_BUS_VTABLE_UNPRIVILEGED),
3496         SD_BUS_METHOD("LockSessions",
3497                       NULL,
3498                       NULL,
3499                       method_lock_sessions,
3500                       SD_BUS_VTABLE_UNPRIVILEGED),
3501         SD_BUS_METHOD("UnlockSessions",
3502                       NULL,
3503                       NULL,
3504                       method_lock_sessions,
3505                       SD_BUS_VTABLE_UNPRIVILEGED),
3506         SD_BUS_METHOD_WITH_NAMES("KillSession",
3507                                  "ssi",
3508                                  SD_BUS_PARAM(session_id)
3509                                  SD_BUS_PARAM(who)
3510                                  SD_BUS_PARAM(signal_number),
3511                                  NULL,,
3512                                  method_kill_session,
3513                                  SD_BUS_VTABLE_UNPRIVILEGED),
3514         SD_BUS_METHOD_WITH_NAMES("KillUser",
3515                                  "ui",
3516                                  SD_BUS_PARAM(uid)
3517                                  SD_BUS_PARAM(signal_number),
3518                                  NULL,,
3519                                  method_kill_user,
3520                                  SD_BUS_VTABLE_UNPRIVILEGED),
3521         SD_BUS_METHOD_WITH_NAMES("TerminateSession",
3522                                  "s",
3523                                  SD_BUS_PARAM(session_id),
3524                                  NULL,,
3525                                  method_terminate_session,
3526                                  SD_BUS_VTABLE_UNPRIVILEGED),
3527         SD_BUS_METHOD_WITH_NAMES("TerminateUser",
3528                                  "u",
3529                                  SD_BUS_PARAM(uid),
3530                                  NULL,,
3531                                  method_terminate_user,
3532                                  SD_BUS_VTABLE_UNPRIVILEGED),
3533         SD_BUS_METHOD_WITH_NAMES("TerminateSeat",
3534                                  "s",
3535                                  SD_BUS_PARAM(seat_id),
3536                                  NULL,,
3537                                  method_terminate_seat,
3538                                  SD_BUS_VTABLE_UNPRIVILEGED),
3539         SD_BUS_METHOD_WITH_NAMES("SetUserLinger",
3540                                  "ubb",
3541                                  SD_BUS_PARAM(uid)
3542                                  SD_BUS_PARAM(enable)
3543                                  SD_BUS_PARAM(interactive),
3544                                  NULL,,
3545                                  method_set_user_linger,
3546                                  SD_BUS_VTABLE_UNPRIVILEGED),
3547         SD_BUS_METHOD_WITH_NAMES("AttachDevice",
3548                                  "ssb",
3549                                  SD_BUS_PARAM(seat_id)
3550                                  SD_BUS_PARAM(sysfs_path)
3551                                  SD_BUS_PARAM(interactive),
3552                                  NULL,,
3553                                  method_attach_device,
3554                                  SD_BUS_VTABLE_UNPRIVILEGED),
3555         SD_BUS_METHOD_WITH_NAMES("FlushDevices",
3556                                  "b",
3557                                  SD_BUS_PARAM(interactive),
3558                                  NULL,,
3559                                  method_flush_devices,
3560                                  SD_BUS_VTABLE_UNPRIVILEGED),
3561         SD_BUS_METHOD_WITH_NAMES("PowerOff",
3562                                  "b",
3563                                  SD_BUS_PARAM(interactive),
3564                                  NULL,,
3565                                  method_poweroff,
3566                                  SD_BUS_VTABLE_UNPRIVILEGED),
3567         SD_BUS_METHOD_WITH_NAMES("PowerOffWithFlags",
3568                                  "t",
3569                                  SD_BUS_PARAM(flags),
3570                                  NULL,,
3571                                  method_poweroff,
3572                                  SD_BUS_VTABLE_UNPRIVILEGED),
3573         SD_BUS_METHOD_WITH_NAMES("Reboot",
3574                                  "b",
3575                                  SD_BUS_PARAM(interactive),
3576                                  NULL,,
3577                                  method_reboot,
3578                                  SD_BUS_VTABLE_UNPRIVILEGED),
3579         SD_BUS_METHOD_WITH_NAMES("RebootWithFlags",
3580                                  "t",
3581                                  SD_BUS_PARAM(flags),
3582                                  NULL,,
3583                                  method_reboot,
3584                                  SD_BUS_VTABLE_UNPRIVILEGED),
3585         SD_BUS_METHOD_WITH_NAMES("Halt",
3586                                  "b",
3587                                  SD_BUS_PARAM(interactive),
3588                                  NULL,,
3589                                  method_halt,
3590                                  SD_BUS_VTABLE_UNPRIVILEGED),
3591         SD_BUS_METHOD_WITH_NAMES("HaltWithFlags",
3592                                  "t",
3593                                  SD_BUS_PARAM(flags),
3594                                  NULL,,
3595                                  method_halt,
3596                                  SD_BUS_VTABLE_UNPRIVILEGED),
3597         SD_BUS_METHOD_WITH_NAMES("Suspend",
3598                                  "b",
3599                                  SD_BUS_PARAM(interactive),
3600                                  NULL,,
3601                                  method_suspend,
3602                                  SD_BUS_VTABLE_UNPRIVILEGED),
3603         SD_BUS_METHOD_WITH_NAMES("SuspendWithFlags",
3604                                  "t",
3605                                  SD_BUS_PARAM(flags),
3606                                  NULL,,
3607                                  method_suspend,
3608                                  SD_BUS_VTABLE_UNPRIVILEGED),
3609         SD_BUS_METHOD_WITH_NAMES("Hibernate",
3610                                  "b",
3611                                  SD_BUS_PARAM(interactive),
3612                                  NULL,,
3613                                  method_hibernate,
3614                                  SD_BUS_VTABLE_UNPRIVILEGED),
3615         SD_BUS_METHOD_WITH_NAMES("HibernateWithFlags",
3616                                  "t",
3617                                  SD_BUS_PARAM(flags),
3618                                  NULL,,
3619                                  method_hibernate,
3620                                  SD_BUS_VTABLE_UNPRIVILEGED),
3621         SD_BUS_METHOD_WITH_NAMES("HybridSleep",
3622                                  "b",
3623                                  SD_BUS_PARAM(interactive),
3624                                  NULL,,
3625                                  method_hybrid_sleep,
3626                                  SD_BUS_VTABLE_UNPRIVILEGED),
3627         SD_BUS_METHOD_WITH_NAMES("HybridSleepWithFlags",
3628                                  "t",
3629                                  SD_BUS_PARAM(flags),
3630                                  NULL,,
3631                                  method_hybrid_sleep,
3632                                  SD_BUS_VTABLE_UNPRIVILEGED),
3633         SD_BUS_METHOD_WITH_NAMES("SuspendThenHibernate",
3634                                  "b",
3635                                  SD_BUS_PARAM(interactive),
3636                                  NULL,,
3637                                  method_suspend_then_hibernate,
3638                                  SD_BUS_VTABLE_UNPRIVILEGED),
3639         SD_BUS_METHOD_WITH_NAMES("SuspendThenHibernateWithFlags",
3640                                  "t",
3641                                  SD_BUS_PARAM(flags),
3642                                  NULL,,
3643                                  method_suspend_then_hibernate,
3644                                  SD_BUS_VTABLE_UNPRIVILEGED),
3645         SD_BUS_METHOD_WITH_NAMES("CanPowerOff",
3646                                  NULL,,
3647                                  "s",
3648                                  SD_BUS_PARAM(result),
3649                                  method_can_poweroff,
3650                                  SD_BUS_VTABLE_UNPRIVILEGED),
3651         SD_BUS_METHOD_WITH_NAMES("CanReboot",
3652                                  NULL,,
3653                                  "s",
3654                                  SD_BUS_PARAM(result),
3655                                  method_can_reboot,
3656                                  SD_BUS_VTABLE_UNPRIVILEGED),
3657         SD_BUS_METHOD_WITH_NAMES("CanHalt",
3658                                  NULL,,
3659                                  "s",
3660                                  SD_BUS_PARAM(result),
3661                                  method_can_halt,
3662                                  SD_BUS_VTABLE_UNPRIVILEGED),
3663         SD_BUS_METHOD_WITH_NAMES("CanSuspend",
3664                                  NULL,,
3665                                  "s",
3666                                  SD_BUS_PARAM(result),
3667                                  method_can_suspend,
3668                                  SD_BUS_VTABLE_UNPRIVILEGED),
3669         SD_BUS_METHOD_WITH_NAMES("CanHibernate",
3670                                  NULL,,
3671                                  "s",
3672                                  SD_BUS_PARAM(result),
3673                                  method_can_hibernate,
3674                                  SD_BUS_VTABLE_UNPRIVILEGED),
3675         SD_BUS_METHOD_WITH_NAMES("CanHybridSleep",
3676                                  NULL,,
3677                                  "s",
3678                                  SD_BUS_PARAM(result),
3679                                  method_can_hybrid_sleep,
3680                                  SD_BUS_VTABLE_UNPRIVILEGED),
3681         SD_BUS_METHOD_WITH_NAMES("CanSuspendThenHibernate",
3682                                  NULL,,
3683                                  "s",
3684                                  SD_BUS_PARAM(result),
3685                                  method_can_suspend_then_hibernate,
3686                                  SD_BUS_VTABLE_UNPRIVILEGED),
3687         SD_BUS_METHOD_WITH_NAMES("ScheduleShutdown",
3688                                  "st",
3689                                  SD_BUS_PARAM(type)
3690                                  SD_BUS_PARAM(usec),
3691                                  NULL,,
3692                                  method_schedule_shutdown,
3693                                  SD_BUS_VTABLE_UNPRIVILEGED),
3694         SD_BUS_METHOD_WITH_NAMES("CancelScheduledShutdown",
3695                                  NULL,,
3696                                  "b",
3697                                  SD_BUS_PARAM(cancelled),
3698                                  method_cancel_scheduled_shutdown,
3699                                  SD_BUS_VTABLE_UNPRIVILEGED),
3700         SD_BUS_METHOD_WITH_NAMES("Inhibit",
3701                                  "ssss",
3702                                  SD_BUS_PARAM(what)
3703                                  SD_BUS_PARAM(who)
3704                                  SD_BUS_PARAM(why)
3705                                  SD_BUS_PARAM(mode),
3706                                  "h",
3707                                  SD_BUS_PARAM(pipe_fd),
3708                                  method_inhibit,
3709                                  SD_BUS_VTABLE_UNPRIVILEGED),
3710         SD_BUS_METHOD_WITH_NAMES("CanRebootParameter",
3711                                  NULL,,
3712                                  "s",
3713                                  SD_BUS_PARAM(result),
3714                                  method_can_reboot_parameter,
3715                                  SD_BUS_VTABLE_UNPRIVILEGED),
3716         SD_BUS_METHOD_WITH_NAMES("SetRebootParameter",
3717                                  "s",
3718                                  SD_BUS_PARAM(parameter),
3719                                  NULL,,
3720                                  method_set_reboot_parameter,
3721                                  SD_BUS_VTABLE_UNPRIVILEGED),
3722         SD_BUS_METHOD_WITH_NAMES("CanRebootToFirmwareSetup",
3723                                  NULL,,
3724                                  "s",
3725                                  SD_BUS_PARAM(result),
3726                                  method_can_reboot_to_firmware_setup,
3727                                  SD_BUS_VTABLE_UNPRIVILEGED),
3728         SD_BUS_METHOD_WITH_NAMES("SetRebootToFirmwareSetup",
3729                                  "b",
3730                                  SD_BUS_PARAM(enable),
3731                                  NULL,,
3732                                  method_set_reboot_to_firmware_setup,
3733                                  SD_BUS_VTABLE_UNPRIVILEGED),
3734         SD_BUS_METHOD_WITH_NAMES("CanRebootToBootLoaderMenu",
3735                                  NULL,,
3736                                  "s",
3737                                  SD_BUS_PARAM(result),
3738                                  method_can_reboot_to_boot_loader_menu,
3739                                  SD_BUS_VTABLE_UNPRIVILEGED),
3740         SD_BUS_METHOD_WITH_NAMES("SetRebootToBootLoaderMenu",
3741                                  "t",
3742                                  SD_BUS_PARAM(timeout),
3743                                  NULL,,
3744                                  method_set_reboot_to_boot_loader_menu,
3745                                  SD_BUS_VTABLE_UNPRIVILEGED),
3746         SD_BUS_METHOD_WITH_NAMES("CanRebootToBootLoaderEntry",
3747                                  NULL,,
3748                                  "s",
3749                                  SD_BUS_PARAM(result),
3750                                  method_can_reboot_to_boot_loader_entry,
3751                                  SD_BUS_VTABLE_UNPRIVILEGED),
3752         SD_BUS_METHOD_WITH_NAMES("SetRebootToBootLoaderEntry",
3753                                  "s",
3754                                  SD_BUS_PARAM(boot_loader_entry),
3755                                  NULL,,
3756                                  method_set_reboot_to_boot_loader_entry,
3757                                  SD_BUS_VTABLE_UNPRIVILEGED),
3758         SD_BUS_METHOD_WITH_NAMES("SetWallMessage",
3759                                  "sb",
3760                                  SD_BUS_PARAM(wall_message)
3761                                  SD_BUS_PARAM(enable),
3762                                  NULL,,
3763                                  method_set_wall_message,
3764                                  SD_BUS_VTABLE_UNPRIVILEGED),
3765
3766         SD_BUS_SIGNAL_WITH_NAMES("SessionNew",
3767                                  "so",
3768                                  SD_BUS_PARAM(session_id)
3769                                  SD_BUS_PARAM(object_path),
3770                                  0),
3771         SD_BUS_SIGNAL_WITH_NAMES("SessionRemoved",
3772                                  "so",
3773                                  SD_BUS_PARAM(session_id)
3774                                  SD_BUS_PARAM(object_path),
3775                                  0),
3776         SD_BUS_SIGNAL_WITH_NAMES("UserNew",
3777                                  "uo",
3778                                  SD_BUS_PARAM(uid)
3779                                  SD_BUS_PARAM(object_path),
3780                                  0),
3781         SD_BUS_SIGNAL_WITH_NAMES("UserRemoved",
3782                                  "uo",
3783                                  SD_BUS_PARAM(uid)
3784                                  SD_BUS_PARAM(object_path),
3785                                  0),
3786         SD_BUS_SIGNAL_WITH_NAMES("SeatNew",
3787                                  "so",
3788                                  SD_BUS_PARAM(seat_id)
3789                                  SD_BUS_PARAM(object_path),
3790                                  0),
3791         SD_BUS_SIGNAL_WITH_NAMES("SeatRemoved",
3792                                  "so",
3793                                  SD_BUS_PARAM(seat_id)
3794                                  SD_BUS_PARAM(object_path),
3795                                  0),
3796         SD_BUS_SIGNAL_WITH_NAMES("PrepareForShutdown",
3797                                  "b",
3798                                  SD_BUS_PARAM(start),
3799                                  0),
3800         SD_BUS_SIGNAL_WITH_NAMES("PrepareForSleep",
3801                                  "b",
3802                                  SD_BUS_PARAM(start),
3803                                  0),
3804
3805         SD_BUS_VTABLE_END
3806 };
3807
3808 const BusObjectImplementation manager_object = {
3809         "/org/freedesktop/login1",
3810         "org.freedesktop.login1.Manager",
3811         .vtables = BUS_VTABLES(manager_vtable),
3812         .children = BUS_IMPLEMENTATIONS(&seat_object,
3813                                         &session_object,
3814                                         &user_object),
3815 };
3816
3817 static int session_jobs_reply(Session *s, uint32_t jid, const char *unit, const char *result) {
3818         assert(s);
3819         assert(unit);
3820
3821         if (!s->started)
3822                 return 0;
3823
3824         if (result && !streq(result, "done")) {
3825                 _cleanup_(sd_bus_error_free) sd_bus_error e = SD_BUS_ERROR_NULL;
3826
3827                 sd_bus_error_setf(&e, BUS_ERROR_JOB_FAILED,
3828                                   "Job %u for unit '%s' failed with '%s'", jid, unit, result);
3829                 return session_send_create_reply(s, &e);
3830         }
3831
3832         return session_send_create_reply(s, NULL);
3833 }
3834
3835 int match_job_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3836         const char *path, *result, *unit;
3837         Manager *m = userdata;
3838         Session *session;
3839         uint32_t id;
3840         User *user;
3841         int r;
3842
3843         assert(message);
3844         assert(m);
3845
3846         r = sd_bus_message_read(message, "uoss", &id, &path, &unit, &result);
3847         if (r < 0) {
3848                 bus_log_parse_error(r);
3849                 return 0;
3850         }
3851
3852         if (m->action_job && streq(m->action_job, path)) {
3853                 log_info("Operation '%s' finished.", inhibit_what_to_string(m->action_what));
3854
3855                 /* Tell people that they now may take a lock again */
3856                 (void) send_prepare_for(m, m->action_what, false);
3857
3858                 m->action_job = mfree(m->action_job);
3859                 m->action_unit = NULL;
3860                 m->action_what = 0;
3861                 return 0;
3862         }
3863
3864         session = hashmap_get(m->session_units, unit);
3865         if (session) {
3866                 if (streq_ptr(path, session->scope_job)) {
3867                         session->scope_job = mfree(session->scope_job);
3868                         (void) session_jobs_reply(session, id, unit, result);
3869
3870                         session_save(session);
3871                         user_save(session->user);
3872                 }
3873
3874                 session_add_to_gc_queue(session);
3875         }
3876
3877         user = hashmap_get(m->user_units, unit);
3878         if (user) {
3879                 if (streq_ptr(path, user->service_job)) {
3880                         user->service_job = mfree(user->service_job);
3881
3882                         LIST_FOREACH(sessions_by_user, session, user->sessions)
3883                                 (void) session_jobs_reply(session, id, unit, NULL /* don't propagate user service failures to the client */);
3884
3885                         user_save(user);
3886                 }
3887
3888                 user_add_to_gc_queue(user);
3889         }
3890
3891         return 0;
3892 }
3893
3894 int match_unit_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3895         const char *path, *unit;
3896         Manager *m = userdata;
3897         Session *session;
3898         User *user;
3899         int r;
3900
3901         assert(message);
3902         assert(m);
3903
3904         r = sd_bus_message_read(message, "so", &unit, &path);
3905         if (r < 0) {
3906                 bus_log_parse_error(r);
3907                 return 0;
3908         }
3909
3910         session = hashmap_get(m->session_units, unit);
3911         if (session)
3912                 session_add_to_gc_queue(session);
3913
3914         user = hashmap_get(m->user_units, unit);
3915         if (user)
3916                 user_add_to_gc_queue(user);
3917
3918         return 0;
3919 }
3920
3921 int match_properties_changed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3922         _cleanup_free_ char *unit = NULL;
3923         Manager *m = userdata;
3924         const char *path;
3925         Session *session;
3926         User *user;
3927         int r;
3928
3929         assert(message);
3930         assert(m);
3931
3932         path = sd_bus_message_get_path(message);
3933         if (!path)
3934                 return 0;
3935
3936         r = unit_name_from_dbus_path(path, &unit);
3937         if (r == -EINVAL) /* not a unit */
3938                 return 0;
3939         if (r < 0) {
3940                 log_oom();
3941                 return 0;
3942         }
3943
3944         session = hashmap_get(m->session_units, unit);
3945         if (session)
3946                 session_add_to_gc_queue(session);
3947
3948         user = hashmap_get(m->user_units, unit);
3949         if (user)
3950                 user_add_to_gc_queue(user);
3951
3952         return 0;
3953 }
3954
3955 int match_reloading(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3956         Manager *m = userdata;
3957         Session *session;
3958         int b, r;
3959
3960         assert(message);
3961         assert(m);
3962
3963         r = sd_bus_message_read(message, "b", &b);
3964         if (r < 0) {
3965                 bus_log_parse_error(r);
3966                 return 0;
3967         }
3968
3969         if (b)
3970                 return 0;
3971
3972         /* systemd finished reloading, let's recheck all our sessions */
3973         log_debug("System manager has been reloaded, rechecking sessions...");
3974
3975         HASHMAP_FOREACH(session, m->sessions)
3976                 session_add_to_gc_queue(session);
3977
3978         return 0;
3979 }
3980
3981 int manager_send_changed(Manager *manager, const char *property, ...) {
3982         char **l;
3983
3984         assert(manager);
3985
3986         l = strv_from_stdarg_alloca(property);
3987
3988         return sd_bus_emit_properties_changed_strv(
3989                         manager->bus,
3990                         "/org/freedesktop/login1",
3991                         "org.freedesktop.login1.Manager",
3992                         l);
3993 }
3994
3995 static int strdup_job(sd_bus_message *reply, char **job) {
3996         const char *j;
3997         char *copy;
3998         int r;
3999
4000         r = sd_bus_message_read(reply, "o", &j);
4001         if (r < 0)
4002                 return r;
4003
4004         copy = strdup(j);
4005         if (!copy)
4006                 return -ENOMEM;
4007
4008         *job = copy;
4009         return 1;
4010 }
4011
4012 int manager_start_scope(
4013                 Manager *manager,
4014                 const char *scope,
4015                 pid_t pid,
4016                 const char *slice,
4017                 const char *description,
4018                 char **wants,
4019                 char **after,
4020                 const char *requires_mounts_for,
4021                 sd_bus_message *more_properties,
4022                 sd_bus_error *error,
4023                 char **job) {
4024
4025         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
4026         char **i;
4027         int r;
4028
4029         assert(manager);
4030         assert(scope);
4031         assert(pid > 1);
4032         assert(job);
4033
4034         r = bus_message_new_method_call(manager->bus, &m, bus_systemd_mgr, "StartTransientUnit");
4035         if (r < 0)
4036                 return r;
4037
4038         r = sd_bus_message_append(m, "ss", strempty(scope), "fail");
4039         if (r < 0)
4040                 return r;
4041
4042         r = sd_bus_message_open_container(m, 'a', "(sv)");
4043         if (r < 0)
4044                 return r;
4045
4046         if (!isempty(slice)) {
4047                 r = sd_bus_message_append(m, "(sv)", "Slice", "s", slice);
4048                 if (r < 0)
4049                         return r;
4050         }
4051
4052         if (!isempty(description)) {
4053                 r = sd_bus_message_append(m, "(sv)", "Description", "s", description);
4054                 if (r < 0)
4055                         return r;
4056         }
4057
4058         STRV_FOREACH(i, wants) {
4059                 r = sd_bus_message_append(m, "(sv)", "Wants", "as", 1, *i);
4060                 if (r < 0)
4061                         return r;
4062         }
4063
4064         STRV_FOREACH(i, after) {
4065                 r = sd_bus_message_append(m, "(sv)", "After", "as", 1, *i);
4066                 if (r < 0)
4067                         return r;
4068         }
4069
4070         if (!empty_or_root(requires_mounts_for)) {
4071                 r = sd_bus_message_append(m, "(sv)", "RequiresMountsFor", "as", 1, requires_mounts_for);
4072                 if (r < 0)
4073                         return r;
4074         }
4075
4076         /* Make sure that the session shells are terminated with SIGHUP since bash and friends tend to ignore
4077          * SIGTERM */
4078         r = sd_bus_message_append(m, "(sv)", "SendSIGHUP", "b", true);
4079         if (r < 0)
4080                 return r;
4081
4082         r = sd_bus_message_append(m, "(sv)", "PIDs", "au", 1, pid);
4083         if (r < 0)
4084                 return r;
4085
4086         /* disable TasksMax= for the session scope, rely on the slice setting for it */
4087         r = sd_bus_message_append(m, "(sv)", "TasksMax", "t", UINT64_MAX);
4088         if (r < 0)
4089                 return bus_log_create_error(r);
4090
4091         if (more_properties) {
4092                 /* If TasksMax also appears here, it will overwrite the default value set above */
4093                 r = sd_bus_message_copy(m, more_properties, true);
4094                 if (r < 0)
4095                         return r;
4096         }
4097
4098         r = sd_bus_message_close_container(m);
4099         if (r < 0)
4100                 return r;
4101
4102         r = sd_bus_message_append(m, "a(sa(sv))", 0);
4103         if (r < 0)
4104                 return r;
4105
4106         r = sd_bus_call(manager->bus, m, 0, error, &reply);
4107         if (r < 0)
4108                 return r;
4109
4110         return strdup_job(reply, job);
4111 }
4112
4113 int manager_start_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) {
4114         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4115         int r;
4116
4117         assert(manager);
4118         assert(unit);
4119         assert(job);
4120
4121         r = bus_call_method(
4122                         manager->bus,
4123                         bus_systemd_mgr,
4124                         "StartUnit",
4125                         error,
4126                         &reply,
4127                         "ss", unit, "replace");
4128         if (r < 0)
4129                 return r;
4130
4131         return strdup_job(reply, job);
4132 }
4133
4134 int manager_stop_unit(Manager *manager, const char *unit, const char *job_mode, sd_bus_error *error, char **ret_job) {
4135         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4136         int r;
4137
4138         assert(manager);
4139         assert(unit);
4140         assert(ret_job);
4141
4142         r = bus_call_method(
4143                         manager->bus,
4144                         bus_systemd_mgr,
4145                         "StopUnit",
4146                         error,
4147                         &reply,
4148                         "ss", unit, job_mode ?: "fail");
4149         if (r < 0) {
4150                 if (sd_bus_error_has_names(error, BUS_ERROR_NO_SUCH_UNIT,
4151                                                   BUS_ERROR_LOAD_FAILED)) {
4152
4153                         *ret_job = NULL;
4154                         sd_bus_error_free(error);
4155                         return 0;
4156                 }
4157
4158                 return r;
4159         }
4160
4161         return strdup_job(reply, ret_job);
4162 }
4163
4164 int manager_abandon_scope(Manager *manager, const char *scope, sd_bus_error *ret_error) {
4165         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4166         _cleanup_free_ char *path = NULL;
4167         int r;
4168
4169         assert(manager);
4170         assert(scope);
4171
4172         path = unit_dbus_path_from_name(scope);
4173         if (!path)
4174                 return -ENOMEM;
4175
4176         r = sd_bus_call_method(
4177                         manager->bus,
4178                         "org.freedesktop.systemd1",
4179                         path,
4180                         "org.freedesktop.systemd1.Scope",
4181                         "Abandon",
4182                         &error,
4183                         NULL,
4184                         NULL);
4185         if (r < 0) {
4186                 if (sd_bus_error_has_names(&error, BUS_ERROR_NO_SUCH_UNIT,
4187                                                    BUS_ERROR_LOAD_FAILED,
4188                                                    BUS_ERROR_SCOPE_NOT_RUNNING))
4189                         return 0;
4190
4191                 sd_bus_error_move(ret_error, &error);
4192                 return r;
4193         }
4194
4195         return 1;
4196 }
4197
4198 int manager_kill_unit(Manager *manager, const char *unit, KillWho who, int signo, sd_bus_error *error) {
4199         assert(manager);
4200         assert(unit);
4201
4202         return bus_call_method(
4203                         manager->bus,
4204                         bus_systemd_mgr,
4205                         "KillUnit",
4206                         error,
4207                         NULL,
4208                         "ssi", unit, who == KILL_LEADER ? "main" : "all", signo);
4209 }
4210
4211 int manager_unit_is_active(Manager *manager, const char *unit, sd_bus_error *ret_error) {
4212         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4213         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4214         _cleanup_free_ char *path = NULL;
4215         const char *state;
4216         int r;
4217
4218         assert(manager);
4219         assert(unit);
4220
4221         path = unit_dbus_path_from_name(unit);
4222         if (!path)
4223                 return -ENOMEM;
4224
4225         r = sd_bus_get_property(
4226                         manager->bus,
4227                         "org.freedesktop.systemd1",
4228                         path,
4229                         "org.freedesktop.systemd1.Unit",
4230                         "ActiveState",
4231                         &error,
4232                         &reply,
4233                         "s");
4234         if (r < 0) {
4235                 /* systemd might have dropped off momentarily, let's
4236                  * not make this an error */
4237                 if (sd_bus_error_has_names(&error, SD_BUS_ERROR_NO_REPLY,
4238                                                    SD_BUS_ERROR_DISCONNECTED))
4239                         return true;
4240
4241                 /* If the unit is already unloaded then it's not
4242                  * active */
4243                 if (sd_bus_error_has_names(&error, BUS_ERROR_NO_SUCH_UNIT,
4244                                                    BUS_ERROR_LOAD_FAILED))
4245                         return false;
4246
4247                 sd_bus_error_move(ret_error, &error);
4248                 return r;
4249         }
4250
4251         r = sd_bus_message_read(reply, "s", &state);
4252         if (r < 0)
4253                 return r;
4254
4255         return !STR_IN_SET(state, "inactive", "failed");
4256 }
4257
4258 int manager_job_is_active(Manager *manager, const char *path, sd_bus_error *ret_error) {
4259         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4260         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4261         int r;
4262
4263         assert(manager);
4264         assert(path);
4265
4266         r = sd_bus_get_property(
4267                         manager->bus,
4268                         "org.freedesktop.systemd1",
4269                         path,
4270                         "org.freedesktop.systemd1.Job",
4271                         "State",
4272                         &error,
4273                         &reply,
4274                         "s");
4275         if (r < 0) {
4276                 if (sd_bus_error_has_names(&error, SD_BUS_ERROR_NO_REPLY,
4277                                                    SD_BUS_ERROR_DISCONNECTED))
4278                         return true;
4279
4280                 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_OBJECT))
4281                         return false;
4282
4283                 sd_bus_error_move(ret_error, &error);
4284                 return r;
4285         }
4286
4287         /* We don't actually care about the state really. The fact
4288          * that we could read the job state is enough for us */
4289
4290         return true;
4291 }