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-api.h"
  24 #include "efi-loader.h"
  25 #include "efivars.h"
  26 #include "env-file.h"
  27 #include "env-util.h"
  28 #include "escape.h"
  29 #include "event-util.h"
  30 #include "fd-util.h"
  31 #include "fileio-label.h"
  32 #include "fileio.h"
  33 #include "format-util.h"
  34 #include "fs-util.h"
  35 #include "logind-action.h"
  36 #include "logind-dbus.h"
  37 #include "logind-polkit.h"
  38 #include "logind-seat-dbus.h"
  39 #include "logind-session-dbus.h"
  40 #include "logind-user-dbus.h"
  41 #include "logind.h"
  42 #include "missing_capability.h"
  43 #include "mkdir-label.h"
  44 #include "parse-util.h"
  45 #include "path-util.h"
  46 #include "process-util.h"
  47 #include "reboot-util.h"
  48 #include "selinux-util.h"
  49 #include "sleep-util.h"
  50 #include "special.h"
  51 #include "serialize.h"
  52 #include "stdio-util.h"
  53 #include "strv.h"
  54 #include "terminal-util.h"
  55 #include "tmpfile-util.h"
  56 #include "unit-name.h"
  57 #include "user-util.h"
  58 #include "utmp-wtmp.h"
  59 #include "virt.h"
  60 #include "wall.h"
  61
  62 /* As a random fun fact sysvinit had a 252 (256-(strlen(" \r\n")+1))
  63  * character limit for the wall message.
  64  * https://git.savannah.nongnu.org/cgit/sysvinit.git/tree/src/shutdown.c#n72
  65  * There is no real technical need for that but doesn't make sense
  66  * to store arbitrary amounts either. As we are not stingy here, we
  67  * allow 4k.
  68  */
  69 #define WALL_MESSAGE_MAX 4096U
  70
  71 #define SHUTDOWN_SCHEDULE_FILE "/run/systemd/shutdown/scheduled"
  72
  73 static int update_schedule_file(Manager *m);
  74 static void reset_scheduled_shutdown(Manager *m);
  75 static int manager_setup_shutdown_timers(Manager* m);
  76
  77 static int get_sender_session(
  78                 Manager *m,
  79                 sd_bus_message *message,
  80                 bool consult_display,
  81                 sd_bus_error *error,
  82                 Session **ret) {
  83
  84         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
  85         Session *session = NULL;
  86         const char *name;
  87         int r;
  88
  89         /* Acquire the sender's session. This first checks if the sending process is inside a session itself,
  90          * and returns that. If not and 'consult_display' is true, this returns the display session of the
  91          * owning user of the caller. */
  92
  93         r = sd_bus_query_sender_creds(message,
  94                                       SD_BUS_CREDS_SESSION|SD_BUS_CREDS_AUGMENT|
  95                                       (consult_display ? SD_BUS_CREDS_OWNER_UID : 0), &creds);
  96         if (r < 0)
  97                 return r;
  98
  99         r = sd_bus_creds_get_session(creds, &name);
 100         if (r < 0) {
 101                 if (r != -ENXIO)
 102                         return r;
 103
 104                 if (consult_display) {
 105                         uid_t uid;
 106
 107                         r = sd_bus_creds_get_owner_uid(creds, &uid);
 108                         if (r < 0) {
 109                                 if (r != -ENXIO)
 110                                         return r;
 111                         } else {
 112                                 User *user;
 113
 114                                 user = hashmap_get(m->users, UID_TO_PTR(uid));
 115                                 if (user)
 116                                         session = user->display;
 117                         }
 118                 }
 119         } else
 120                 session = hashmap_get(m->sessions, name);
 121
 122         if (!session)
 123                 return sd_bus_error_setf(error, BUS_ERROR_NO_SESSION_FOR_PID,
 124                                          consult_display ?
 125                                          "Caller does not belong to any known session and doesn't own any suitable session." :
 126                                          "Caller does not belong to any known session.");
 127
 128         *ret = session;
 129         return 0;
 130 }
 131
 132 int manager_get_session_from_creds(
 133                 Manager *m,
 134                 sd_bus_message *message,
 135                 const char *name,
 136                 sd_bus_error *error,
 137                 Session **ret) {
 138
 139         Session *session;
 140
 141         assert(m);
 142         assert(ret);
 143
 144         if (SEAT_IS_SELF(name)) /* the caller's own session */
 145                 return get_sender_session(m, message, false, error, ret);
 146         if (SEAT_IS_AUTO(name)) /* The caller's own session if they have one, otherwise their user's display session */
 147                 return get_sender_session(m, message, true, error, ret);
 148
 149         session = hashmap_get(m->sessions, name);
 150         if (!session)
 151                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SESSION, "No session '%s' known", name);
 152
 153         *ret = session;
 154         return 0;
 155 }
 156
 157 static int get_sender_user(Manager *m, sd_bus_message *message, sd_bus_error *error, User **ret) {
 158         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 159         uid_t uid;
 160         User *user;
 161         int r;
 162
 163         /* Note that we get the owner UID of the session, not the actual client UID here! */
 164         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds);
 165         if (r < 0)
 166                 return r;
 167
 168         r = sd_bus_creds_get_owner_uid(creds, &uid);
 169         if (r < 0) {
 170                 if (r != -ENXIO)
 171                         return r;
 172
 173                 user = NULL;
 174         } else
 175                 user = hashmap_get(m->users, UID_TO_PTR(uid));
 176
 177         if (!user)
 178                 return sd_bus_error_setf(error, BUS_ERROR_NO_USER_FOR_PID,
 179                                          "Caller does not belong to any logged in or lingering user");
 180
 181         *ret = user;
 182         return 0;
 183 }
 184
 185 int manager_get_user_from_creds(Manager *m, sd_bus_message *message, uid_t uid, sd_bus_error *error, User **ret) {
 186         User *user;
 187
 188         assert(m);
 189         assert(ret);
 190
 191         if (!uid_is_valid(uid))
 192                 return get_sender_user(m, message, error, ret);
 193
 194         user = hashmap_get(m->users, UID_TO_PTR(uid));
 195         if (!user)
 196                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_USER,
 197                                          "User ID "UID_FMT" is not logged in or lingering", uid);
 198
 199         *ret = user;
 200         return 0;
 201 }
 202
 203 int manager_get_seat_from_creds(
 204                 Manager *m,
 205                 sd_bus_message *message,
 206                 const char *name,
 207                 sd_bus_error *error,
 208                 Seat **ret) {
 209
 210         Seat *seat;
 211         int r;
 212
 213         assert(m);
 214         assert(ret);
 215
 216         if (SEAT_IS_SELF(name) || SEAT_IS_AUTO(name)) {
 217                 Session *session;
 218
 219                 /* Use these special seat names as session names */
 220                 r = manager_get_session_from_creds(m, message, name, error, &session);
 221                 if (r < 0)
 222                         return r;
 223
 224                 seat = session->seat;
 225                 if (!seat)
 226                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "Session '%s' has no seat.", session->id);
 227         } else {
 228                 seat = hashmap_get(m->seats, name);
 229                 if (!seat)
 230                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "No seat '%s' known", name);
 231         }
 232
 233         *ret = seat;
 234         return 0;
 235 }
 236
 237 static int return_test_polkit(
 238                 sd_bus_message *message,
 239                 int capability,
 240                 const char *action,
 241                 const char **details,
 242                 uid_t good_user,
 243                 sd_bus_error *e) {
 244
 245         const char *result;
 246         bool challenge;
 247         int r;
 248
 249         r = bus_test_polkit(message, capability, action, details, good_user, &challenge, e);
 250         if (r < 0)
 251                 return r;
 252
 253         if (r > 0)
 254                 result = "yes";
 255         else if (challenge)
 256                 result = "challenge";
 257         else
 258                 result = "no";
 259
 260         return sd_bus_reply_method_return(message, "s", result);
 261 }
 262
 263 static int property_get_idle_hint(
 264                 sd_bus *bus,
 265                 const char *path,
 266                 const char *interface,
 267                 const char *property,
 268                 sd_bus_message *reply,
 269                 void *userdata,
 270                 sd_bus_error *error) {
 271
 272         Manager *m = ASSERT_PTR(userdata);
 273
 274         assert(bus);
 275         assert(reply);
 276
 277         return sd_bus_message_append(reply, "b", manager_get_idle_hint(m, NULL) > 0);
 278 }
 279
 280 static int property_get_idle_since_hint(
 281                 sd_bus *bus,
 282                 const char *path,
 283                 const char *interface,
 284                 const char *property,
 285                 sd_bus_message *reply,
 286                 void *userdata,
 287                 sd_bus_error *error) {
 288
 289         Manager *m = ASSERT_PTR(userdata);
 290         dual_timestamp t = DUAL_TIMESTAMP_NULL;
 291
 292         assert(bus);
 293         assert(reply);
 294
 295         manager_get_idle_hint(m, &t);
 296
 297         return sd_bus_message_append(reply, "t", streq(property, "IdleSinceHint") ? t.realtime : t.monotonic);
 298 }
 299
 300 static int property_get_inhibited(
 301                 sd_bus *bus,
 302                 const char *path,
 303                 const char *interface,
 304                 const char *property,
 305                 sd_bus_message *reply,
 306                 void *userdata,
 307                 sd_bus_error *error) {
 308
 309         Manager *m = ASSERT_PTR(userdata);
 310         InhibitWhat w;
 311
 312         assert(bus);
 313         assert(reply);
 314
 315         w = manager_inhibit_what(m, streq(property, "BlockInhibited") ? INHIBIT_BLOCK : INHIBIT_DELAY);
 316
 317         return sd_bus_message_append(reply, "s", inhibit_what_to_string(w));
 318 }
 319
 320 static int property_get_preparing(
 321                 sd_bus *bus,
 322                 const char *path,
 323                 const char *interface,
 324                 const char *property,
 325                 sd_bus_message *reply,
 326                 void *userdata,
 327                 sd_bus_error *error) {
 328
 329         Manager *m = ASSERT_PTR(userdata);
 330         bool b = false;
 331
 332         assert(bus);
 333         assert(reply);
 334
 335         if (m->delayed_action) {
 336                 if (streq(property, "PreparingForShutdown"))
 337                         b = m->delayed_action->inhibit_what & INHIBIT_SHUTDOWN;
 338                 else
 339                         b = m->delayed_action->inhibit_what & INHIBIT_SLEEP;
 340         }
 341
 342         return sd_bus_message_append(reply, "b", b);
 343 }
 344
 345 static int property_get_scheduled_shutdown(
 346                 sd_bus *bus,
 347                 const char *path,
 348                 const char *interface,
 349                 const char *property,
 350                 sd_bus_message *reply,
 351                 void *userdata,
 352                 sd_bus_error *error) {
 353
 354         Manager *m = ASSERT_PTR(userdata);
 355         int r;
 356
 357         assert(bus);
 358         assert(reply);
 359
 360         r = sd_bus_message_open_container(reply, 'r', "st");
 361         if (r < 0)
 362                 return r;
 363
 364         r = sd_bus_message_append(reply, "st",
 365                 m->scheduled_shutdown_action ? handle_action_to_string(m->scheduled_shutdown_action->handle) : NULL,
 366                 m->scheduled_shutdown_timeout);
 367         if (r < 0)
 368                 return r;
 369
 370         return sd_bus_message_close_container(reply);
 371 }
 372
 373 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_handle_action, handle_action, HandleAction);
 374 static BUS_DEFINE_PROPERTY_GET(property_get_docked, "b", Manager, manager_is_docked_or_external_displays);
 375 static BUS_DEFINE_PROPERTY_GET(property_get_lid_closed, "b", Manager, manager_is_lid_closed);
 376 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_on_external_power, "b", manager_is_on_external_power());
 377 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_compat_user_tasks_max, "t", CGROUP_LIMIT_MAX);
 378 static BUS_DEFINE_PROPERTY_GET_REF(property_get_hashmap_size, "t", Hashmap *, (uint64_t) hashmap_size);
 379
 380 static int method_get_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 381         _cleanup_free_ char *p = NULL;
 382         Manager *m = ASSERT_PTR(userdata);
 383         const char *name;
 384         Session *session;
 385         int r;
 386
 387         assert(message);
 388
 389         r = sd_bus_message_read(message, "s", &name);
 390         if (r < 0)
 391                 return r;
 392
 393         r = manager_get_session_from_creds(m, message, name, error, &session);
 394         if (r < 0)
 395                 return r;
 396
 397         p = session_bus_path(session);
 398         if (!p)
 399                 return -ENOMEM;
 400
 401         return sd_bus_reply_method_return(message, "o", p);
 402 }
 403
 404 /* Get login session of a process.  This is not what you are looking for these days,
 405  * as apps may instead belong to a user service unit.  This includes terminal
 406  * emulators and hence command-line apps. */
 407 static int method_get_session_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 408         _cleanup_free_ char *p = NULL;
 409         Session *session = NULL;
 410         Manager *m = ASSERT_PTR(userdata);
 411         pid_t pid;
 412         int r;
 413
 414         assert(message);
 415
 416         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 417
 418         r = sd_bus_message_read(message, "u", &pid);
 419         if (r < 0)
 420                 return r;
 421         if (pid < 0)
 422                 return -EINVAL;
 423
 424         if (pid == 0) {
 425                 r = manager_get_session_from_creds(m, message, NULL, error, &session);
 426                 if (r < 0)
 427                         return r;
 428         } else {
 429                 r = manager_get_session_by_pid(m, pid, &session);
 430                 if (r < 0)
 431                         return r;
 432
 433                 if (!session)
 434                         return sd_bus_error_setf(error, BUS_ERROR_NO_SESSION_FOR_PID,
 435                                                  "PID "PID_FMT" does not belong to any known session", pid);
 436         }
 437
 438         p = session_bus_path(session);
 439         if (!p)
 440                 return -ENOMEM;
 441
 442         return sd_bus_reply_method_return(message, "o", p);
 443 }
 444
 445 static int method_get_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 446         _cleanup_free_ char *p = NULL;
 447         Manager *m = ASSERT_PTR(userdata);
 448         uint32_t uid;
 449         User *user;
 450         int r;
 451
 452         assert(message);
 453
 454         r = sd_bus_message_read(message, "u", &uid);
 455         if (r < 0)
 456                 return r;
 457
 458         r = manager_get_user_from_creds(m, message, uid, error, &user);
 459         if (r < 0)
 460                 return r;
 461
 462         p = user_bus_path(user);
 463         if (!p)
 464                 return -ENOMEM;
 465
 466         return sd_bus_reply_method_return(message, "o", p);
 467 }
 468
 469 static int method_get_user_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 470         _cleanup_free_ char *p = NULL;
 471         Manager *m = ASSERT_PTR(userdata);
 472         User *user = NULL;
 473         pid_t pid;
 474         int r;
 475
 476         assert(message);
 477
 478         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 479
 480         r = sd_bus_message_read(message, "u", &pid);
 481         if (r < 0)
 482                 return r;
 483         if (pid < 0)
 484                 return -EINVAL;
 485
 486         if (pid == 0) {
 487                 r = manager_get_user_from_creds(m, message, UID_INVALID, error, &user);
 488                 if (r < 0)
 489                         return r;
 490         } else {
 491                 r = manager_get_user_by_pid(m, pid, &user);
 492                 if (r < 0)
 493                         return r;
 494                 if (!user)
 495                         return sd_bus_error_setf(error, BUS_ERROR_NO_USER_FOR_PID,
 496                                                  "PID "PID_FMT" does not belong to any logged in user or lingering user",
 497                                                  pid);
 498         }
 499
 500         p = user_bus_path(user);
 501         if (!p)
 502                 return -ENOMEM;
 503
 504         return sd_bus_reply_method_return(message, "o", p);
 505 }
 506
 507 static int method_get_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 508         _cleanup_free_ char *p = NULL;
 509         Manager *m = ASSERT_PTR(userdata);
 510         const char *name;
 511         Seat *seat;
 512         int r;
 513
 514         assert(message);
 515
 516         r = sd_bus_message_read(message, "s", &name);
 517         if (r < 0)
 518                 return r;
 519
 520         r = manager_get_seat_from_creds(m, message, name, error, &seat);
 521         if (r < 0)
 522                 return r;
 523
 524         p = seat_bus_path(seat);
 525         if (!p)
 526                 return -ENOMEM;
 527
 528         return sd_bus_reply_method_return(message, "o", p);
 529 }
 530
 531 static int method_list_sessions(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 532         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 533         Manager *m = ASSERT_PTR(userdata);
 534         Session *session;
 535         int r;
 536
 537         assert(message);
 538
 539         r = sd_bus_message_new_method_return(message, &reply);
 540         if (r < 0)
 541                 return r;
 542
 543         r = sd_bus_message_open_container(reply, 'a', "(susso)");
 544         if (r < 0)
 545                 return r;
 546
 547         HASHMAP_FOREACH(session, m->sessions) {
 548                 _cleanup_free_ char *p = NULL;
 549
 550                 p = session_bus_path(session);
 551                 if (!p)
 552                         return -ENOMEM;
 553
 554                 r = sd_bus_message_append(reply, "(susso)",
 555                                           session->id,
 556                                           (uint32_t) session->user->user_record->uid,
 557                                           session->user->user_record->user_name,
 558                                           session->seat ? session->seat->id : "",
 559                                           p);
 560                 if (r < 0)
 561                         return r;
 562         }
 563
 564         r = sd_bus_message_close_container(reply);
 565         if (r < 0)
 566                 return r;
 567
 568         return sd_bus_send(NULL, reply, NULL);
 569 }
 570
 571 static int method_list_users(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 572         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 573         Manager *m = ASSERT_PTR(userdata);
 574         User *user;
 575         int r;
 576
 577         assert(message);
 578
 579         r = sd_bus_message_new_method_return(message, &reply);
 580         if (r < 0)
 581                 return r;
 582
 583         r = sd_bus_message_open_container(reply, 'a', "(uso)");
 584         if (r < 0)
 585                 return r;
 586
 587         HASHMAP_FOREACH(user, m->users) {
 588                 _cleanup_free_ char *p = NULL;
 589
 590                 p = user_bus_path(user);
 591                 if (!p)
 592                         return -ENOMEM;
 593
 594                 r = sd_bus_message_append(reply, "(uso)",
 595                                           (uint32_t) user->user_record->uid,
 596                                           user->user_record->user_name,
 597                                           p);
 598                 if (r < 0)
 599                         return r;
 600         }
 601
 602         r = sd_bus_message_close_container(reply);
 603         if (r < 0)
 604                 return r;
 605
 606         return sd_bus_send(NULL, reply, NULL);
 607 }
 608
 609 static int method_list_seats(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 610         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 611         Manager *m = ASSERT_PTR(userdata);
 612         Seat *seat;
 613         int r;
 614
 615         assert(message);
 616
 617         r = sd_bus_message_new_method_return(message, &reply);
 618         if (r < 0)
 619                 return r;
 620
 621         r = sd_bus_message_open_container(reply, 'a', "(so)");
 622         if (r < 0)
 623                 return r;
 624
 625         HASHMAP_FOREACH(seat, m->seats) {
 626                 _cleanup_free_ char *p = NULL;
 627
 628                 p = seat_bus_path(seat);
 629                 if (!p)
 630                         return -ENOMEM;
 631
 632                 r = sd_bus_message_append(reply, "(so)", seat->id, p);
 633                 if (r < 0)
 634                         return r;
 635         }
 636
 637         r = sd_bus_message_close_container(reply);
 638         if (r < 0)
 639                 return r;
 640
 641         return sd_bus_send(NULL, reply, NULL);
 642 }
 643
 644 static int method_list_inhibitors(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 645         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 646         Manager *m = ASSERT_PTR(userdata);
 647         Inhibitor *inhibitor;
 648         int r;
 649
 650         assert(message);
 651
 652         r = sd_bus_message_new_method_return(message, &reply);
 653         if (r < 0)
 654                 return r;
 655
 656         r = sd_bus_message_open_container(reply, 'a', "(ssssuu)");
 657         if (r < 0)
 658                 return r;
 659
 660         HASHMAP_FOREACH(inhibitor, m->inhibitors) {
 661
 662                 r = sd_bus_message_append(reply, "(ssssuu)",
 663                                           strempty(inhibit_what_to_string(inhibitor->what)),
 664                                           strempty(inhibitor->who),
 665                                           strempty(inhibitor->why),
 666                                           strempty(inhibit_mode_to_string(inhibitor->mode)),
 667                                           (uint32_t) inhibitor->uid,
 668                                           (uint32_t) inhibitor->pid.pid);
 669                 if (r < 0)
 670                         return r;
 671         }
 672
 673         r = sd_bus_message_close_container(reply);
 674         if (r < 0)
 675                 return r;
 676
 677         return sd_bus_send(NULL, reply, NULL);
 678 }
 679
 680 static int method_create_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 681         const char *service, *type, *class, *cseat, *tty, *display, *remote_user, *remote_host, *desktop;
 682         _cleanup_free_ char *id = NULL;
 683         Session *session = NULL;
 684         uint32_t audit_id = 0;
 685         Manager *m = ASSERT_PTR(userdata);
 686         User *user = NULL;
 687         Seat *seat = NULL;
 688         pid_t leader;
 689         uid_t uid;
 690         int remote;
 691         uint32_t vtnr = 0;
 692         SessionType t;
 693         SessionClass c;
 694         int r;
 695
 696         assert(message);
 697
 698         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 699         assert_cc(sizeof(uid_t) == sizeof(uint32_t));
 700
 701         r = sd_bus_message_read(message, "uusssssussbss",
 702                                 &uid, &leader, &service, &type, &class, &desktop, &cseat,
 703                                 &vtnr, &tty, &display, &remote, &remote_user, &remote_host);
 704         if (r < 0)
 705                 return r;
 706
 707         if (!uid_is_valid(uid))
 708                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid UID");
 709         if (leader < 0 || leader == 1 || leader == getpid_cached())
 710                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid leader PID");
 711
 712         if (isempty(type))
 713                 t = _SESSION_TYPE_INVALID;
 714         else {
 715                 t = session_type_from_string(type);
 716                 if (t < 0)
 717                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 718                                                  "Invalid session type %s", type);
 719         }
 720
 721         if (isempty(class))
 722                 c = _SESSION_CLASS_INVALID;
 723         else {
 724                 c = session_class_from_string(class);
 725                 if (c < 0)
 726                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 727                                                  "Invalid session class %s", class);
 728         }
 729
 730         if (isempty(desktop))
 731                 desktop = NULL;
 732         else {
 733                 if (!string_is_safe(desktop))
 734                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 735                                                  "Invalid desktop string %s", desktop);
 736         }
 737
 738         if (isempty(cseat))
 739                 seat = NULL;
 740         else {
 741                 seat = hashmap_get(m->seats, cseat);
 742                 if (!seat)
 743                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT,
 744                                                  "No seat '%s' known", cseat);
 745         }
 746
 747         if (tty_is_vc(tty)) {
 748                 int v;
 749
 750                 if (!seat)
 751                         seat = m->seat0;
 752                 else if (seat != m->seat0)
 753                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 754                                                  "TTY %s is virtual console but seat %s is not seat0", tty, seat->id);
 755
 756                 v = vtnr_from_tty(tty);
 757                 if (v <= 0)
 758                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 759                                                  "Cannot determine VT number from virtual console TTY %s", tty);
 760
 761                 if (vtnr == 0)
 762                         vtnr = (uint32_t) v;
 763                 else if (vtnr != (uint32_t) v)
 764                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 765                                                  "Specified TTY and VT number do not match");
 766
 767         } else if (tty_is_console(tty)) {
 768
 769                 if (!seat)
 770                         seat = m->seat0;
 771                 else if (seat != m->seat0)
 772                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 773                                                  "Console TTY specified but seat is not seat0");
 774
 775                 if (vtnr != 0)
 776                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 777                                                  "Console TTY specified but VT number is not 0");
 778         }
 779
 780         if (seat) {
 781                 if (seat_has_vts(seat)) {
 782                         if (vtnr <= 0 || vtnr > 63)
 783                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 784                                                          "VT number out of range");
 785                 } else {
 786                         if (vtnr != 0)
 787                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 788                                                          "Seat has no VTs but VT number not 0");
 789                 }
 790         }
 791
 792         if (t == _SESSION_TYPE_INVALID) {
 793                 if (!isempty(display))
 794                         t = SESSION_X11;
 795                 else if (!isempty(tty))
 796                         t = SESSION_TTY;
 797                 else
 798                         t = SESSION_UNSPECIFIED;
 799         }
 800
 801         if (c == _SESSION_CLASS_INVALID) {
 802                 if (t == SESSION_UNSPECIFIED)
 803                         c = SESSION_BACKGROUND;
 804                 else
 805                         c = SESSION_USER;
 806         }
 807
 808         if (leader == 0) {
 809                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 810
 811                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 812                 if (r < 0)
 813                         return r;
 814
 815                 r = sd_bus_creds_get_pid(creds, (pid_t*) &leader);
 816                 if (r < 0)
 817                         return r;
 818         }
 819
 820         /* Check if we are already in a logind session. Or if we are in user@.service
 821          * which is a special PAM session that avoids creating a logind session. */
 822         r = manager_get_user_by_pid(m, leader, NULL);
 823         if (r < 0)
 824                 return r;
 825         if (r > 0)
 826                 return sd_bus_error_setf(error, BUS_ERROR_SESSION_BUSY,
 827                                          "Already running in a session or user slice");
 828
 829         /*
 830          * Old gdm and lightdm start the user-session on the same VT as
 831          * the greeter session. But they destroy the greeter session
 832          * after the user-session and want the user-session to take
 833          * over the VT. We need to support this for
 834          * backwards-compatibility, so make sure we allow new sessions
 835          * on a VT that a greeter is running on. Furthermore, to allow
 836          * re-logins, we have to allow a greeter to take over a used VT for
 837          * the exact same reasons.
 838          */
 839         if (c != SESSION_GREETER &&
 840             vtnr > 0 &&
 841             vtnr < MALLOC_ELEMENTSOF(m->seat0->positions) &&
 842             m->seat0->positions[vtnr] &&
 843             m->seat0->positions[vtnr]->class != SESSION_GREETER)
 844                 return sd_bus_error_set(error, BUS_ERROR_SESSION_BUSY, "Already occupied by a session");
 845
 846         if (hashmap_size(m->sessions) >= m->sessions_max)
 847                 return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED,
 848                                          "Maximum number of sessions (%" PRIu64 ") reached, refusing further sessions.",
 849                                          m->sessions_max);
 850
 851         (void) audit_session_from_pid(leader, &audit_id);
 852         if (audit_session_is_valid(audit_id)) {
 853                 /* Keep our session IDs and the audit session IDs in sync */
 854
 855                 if (asprintf(&id, "%"PRIu32, audit_id) < 0)
 856                         return -ENOMEM;
 857
 858                 /* Wut? There's already a session by this name and we didn't find it above? Weird, then let's
 859                  * not trust the audit data and let's better register a new ID */
 860                 if (hashmap_contains(m->sessions, id)) {
 861                         log_warning("Existing logind session ID %s used by new audit session, ignoring.", id);
 862                         audit_id = AUDIT_SESSION_INVALID;
 863                         id = mfree(id);
 864                 }
 865         }
 866
 867         if (!id) {
 868                 do {
 869                         id = mfree(id);
 870
 871                         if (asprintf(&id, "c%" PRIu64, ++m->session_counter) < 0)
 872                                 return -ENOMEM;
 873
 874                 } while (hashmap_contains(m->sessions, id));
 875         }
 876
 877         /* The generated names should not clash with 'auto' or 'self' */
 878         assert(!SESSION_IS_SELF(id));
 879         assert(!SESSION_IS_AUTO(id));
 880
 881         /* If we are not watching utmp already, try again */
 882         manager_reconnect_utmp(m);
 883
 884         r = manager_add_user_by_uid(m, uid, &user);
 885         if (r < 0)
 886                 goto fail;
 887
 888         r = manager_add_session(m, id, &session);
 889         if (r < 0)
 890                 goto fail;
 891
 892         session_set_user(session, user);
 893         r = session_set_leader(session, leader);
 894         if (r < 0)
 895                 goto fail;
 896
 897         session->original_type = session->type = t;
 898         session->class = c;
 899         session->remote = remote;
 900         session->vtnr = vtnr;
 901
 902         if (!isempty(tty)) {
 903                 session->tty = strdup(tty);
 904                 if (!session->tty) {
 905                         r = -ENOMEM;
 906                         goto fail;
 907                 }
 908
 909                 session->tty_validity = TTY_FROM_PAM;
 910         }
 911
 912         if (!isempty(display)) {
 913                 session->display = strdup(display);
 914                 if (!session->display) {
 915                         r = -ENOMEM;
 916                         goto fail;
 917                 }
 918         }
 919
 920         if (!isempty(remote_user)) {
 921                 session->remote_user = strdup(remote_user);
 922                 if (!session->remote_user) {
 923                         r = -ENOMEM;
 924                         goto fail;
 925                 }
 926         }
 927
 928         if (!isempty(remote_host)) {
 929                 session->remote_host = strdup(remote_host);
 930                 if (!session->remote_host) {
 931                         r = -ENOMEM;
 932                         goto fail;
 933                 }
 934         }
 935
 936         if (!isempty(service)) {
 937                 session->service = strdup(service);
 938                 if (!session->service) {
 939                         r = -ENOMEM;
 940                         goto fail;
 941                 }
 942         }
 943
 944         if (!isempty(desktop)) {
 945                 session->desktop = strdup(desktop);
 946                 if (!session->desktop) {
 947                         r = -ENOMEM;
 948                         goto fail;
 949                 }
 950         }
 951
 952         if (seat) {
 953                 r = seat_attach_session(seat, session);
 954                 if (r < 0)
 955                         goto fail;
 956         }
 957
 958         r = sd_bus_message_enter_container(message, 'a', "(sv)");
 959         if (r < 0)
 960                 goto fail;
 961
 962         r = session_start(session, message, error);
 963         if (r < 0)
 964                 goto fail;
 965
 966         r = sd_bus_message_exit_container(message);
 967         if (r < 0)
 968                 goto fail;
 969
 970         session->create_message = sd_bus_message_ref(message);
 971
 972         /* Now, let's wait until the slice unit and stuff got created. We send the reply back from
 973          * session_send_create_reply(). */
 974
 975         return 1;
 976
 977 fail:
 978         if (session)
 979                 session_add_to_gc_queue(session);
 980
 981         if (user)
 982                 user_add_to_gc_queue(user);
 983
 984         return r;
 985 }
 986
 987 static int method_release_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 988         Manager *m = ASSERT_PTR(userdata);
 989         Session *session;
 990         const char *name;
 991         int r;
 992
 993         assert(message);
 994
 995         r = sd_bus_message_read(message, "s", &name);
 996         if (r < 0)
 997                 return r;
 998
 999         r = manager_get_session_from_creds(m, message, name, error, &session);
1000         if (r < 0)
1001                 return r;
1002
1003         r = session_release(session);
1004         if (r < 0)
1005                 return r;
1006
1007         return sd_bus_reply_method_return(message, NULL);
1008 }
1009
1010 static int method_activate_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1011         Manager *m = ASSERT_PTR(userdata);
1012         Session *session;
1013         const char *name;
1014         int r;
1015
1016         assert(message);
1017
1018         r = sd_bus_message_read(message, "s", &name);
1019         if (r < 0)
1020                 return r;
1021
1022         r = manager_get_session_from_creds(m, message, name, error, &session);
1023         if (r < 0)
1024                 return r;
1025
1026         /* PolicyKit is done by bus_session_method_activate() */
1027
1028         return bus_session_method_activate(message, session, error);
1029 }
1030
1031 static int method_activate_session_on_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1032         const char *session_name, *seat_name;
1033         Manager *m = ASSERT_PTR(userdata);
1034         Session *session;
1035         Seat *seat;
1036         int r;
1037
1038         assert(message);
1039
1040         /* Same as ActivateSession() but refuses to work if the seat doesn't match */
1041
1042         r = sd_bus_message_read(message, "ss", &session_name, &seat_name);
1043         if (r < 0)
1044                 return r;
1045
1046         r = manager_get_session_from_creds(m, message, session_name, error, &session);
1047         if (r < 0)
1048                 return r;
1049
1050         r = manager_get_seat_from_creds(m, message, seat_name, error, &seat);
1051         if (r < 0)
1052                 return r;
1053
1054         if (session->seat != seat)
1055                 return sd_bus_error_setf(error, BUS_ERROR_SESSION_NOT_ON_SEAT,
1056                                          "Session %s not on seat %s", session_name, seat_name);
1057
1058         r = check_polkit_chvt(message, m, error);
1059         if (r < 0)
1060                 return r;
1061         if (r == 0)
1062                 return 1; /* Will call us back */
1063
1064         r = session_activate(session);
1065         if (r < 0)
1066                 return r;
1067
1068         return sd_bus_reply_method_return(message, NULL);
1069 }
1070
1071 static int method_lock_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1072         Manager *m = ASSERT_PTR(userdata);
1073         Session *session;
1074         const char *name;
1075         int r;
1076
1077         assert(message);
1078
1079         r = sd_bus_message_read(message, "s", &name);
1080         if (r < 0)
1081                 return r;
1082
1083         r = manager_get_session_from_creds(m, message, name, error, &session);
1084         if (r < 0)
1085                 return r;
1086
1087         return bus_session_method_lock(message, session, error);
1088 }
1089
1090 static int method_lock_sessions(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1091         Manager *m = ASSERT_PTR(userdata);
1092         int r;
1093
1094         assert(message);
1095
1096         r = bus_verify_polkit_async(
1097                         message,
1098                         CAP_SYS_ADMIN,
1099                         "org.freedesktop.login1.lock-sessions",
1100                         NULL,
1101                         false,
1102                         UID_INVALID,
1103                         &m->polkit_registry,
1104                         error);
1105         if (r < 0)
1106                 return r;
1107         if (r == 0)
1108                 return 1; /* Will call us back */
1109
1110         r = session_send_lock_all(m, streq(sd_bus_message_get_member(message), "LockSessions"));
1111         if (r < 0)
1112                 return r;
1113
1114         return sd_bus_reply_method_return(message, NULL);
1115 }
1116
1117 static int method_kill_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1118         const char *name;
1119         Manager *m = ASSERT_PTR(userdata);
1120         Session *session;
1121         int r;
1122
1123         assert(message);
1124
1125         r = sd_bus_message_read(message, "s", &name);
1126         if (r < 0)
1127                 return r;
1128
1129         r = manager_get_session_from_creds(m, message, name, error, &session);
1130         if (r < 0)
1131                 return r;
1132
1133         return bus_session_method_kill(message, session, error);
1134 }
1135
1136 static int method_kill_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1137         Manager *m = ASSERT_PTR(userdata);
1138         uint32_t uid;
1139         User *user;
1140         int r;
1141
1142         assert(message);
1143
1144         r = sd_bus_message_read(message, "u", &uid);
1145         if (r < 0)
1146                 return r;
1147
1148         r = manager_get_user_from_creds(m, message, uid, error, &user);
1149         if (r < 0)
1150                 return r;
1151
1152         return bus_user_method_kill(message, user, error);
1153 }
1154
1155 static int method_terminate_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1156         Manager *m = ASSERT_PTR(userdata);
1157         const char *name;
1158         Session *session;
1159         int r;
1160
1161         assert(message);
1162
1163         r = sd_bus_message_read(message, "s", &name);
1164         if (r < 0)
1165                 return r;
1166
1167         r = manager_get_session_from_creds(m, message, name, error, &session);
1168         if (r < 0)
1169                 return r;
1170
1171         return bus_session_method_terminate(message, session, error);
1172 }
1173
1174 static int method_terminate_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1175         Manager *m = ASSERT_PTR(userdata);
1176         uint32_t uid;
1177         User *user;
1178         int r;
1179
1180         assert(message);
1181
1182         r = sd_bus_message_read(message, "u", &uid);
1183         if (r < 0)
1184                 return r;
1185
1186         r = manager_get_user_from_creds(m, message, uid, error, &user);
1187         if (r < 0)
1188                 return r;
1189
1190         return bus_user_method_terminate(message, user, error);
1191 }
1192
1193 static int method_terminate_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1194         Manager *m = ASSERT_PTR(userdata);
1195         const char *name;
1196         Seat *seat;
1197         int r;
1198
1199         assert(message);
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 = ASSERT_PTR(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
1223         r = sd_bus_message_read(message, "ubb", &uid, &b, &interactive);
1224         if (r < 0)
1225                 return r;
1226
1227         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID |
1228                                                SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds);
1229         if (r < 0)
1230                 return r;
1231
1232         if (!uid_is_valid(uid)) {
1233                 /* Note that we get the owner UID of the session or user unit,
1234                  * not the actual client UID here! */
1235                 r = sd_bus_creds_get_owner_uid(creds, &uid);
1236                 if (r < 0)
1237                         return r;
1238         }
1239
1240         /* owner_uid is racy, so for authorization we must use euid */
1241         r = sd_bus_creds_get_euid(creds, &auth_uid);
1242         if (r < 0)
1243                 return r;
1244
1245         errno = 0;
1246         pw = getpwuid(uid);
1247         if (!pw)
1248                 return errno_or_else(ENOENT);
1249
1250         r = bus_verify_polkit_async(
1251                         message,
1252                         CAP_SYS_ADMIN,
1253                         uid == auth_uid ? "org.freedesktop.login1.set-self-linger" :
1254                                           "org.freedesktop.login1.set-user-linger",
1255                         NULL,
1256                         interactive,
1257                         UID_INVALID,
1258                         &m->polkit_registry,
1259                         error);
1260         if (r < 0)
1261                 return r;
1262         if (r == 0)
1263                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1264
1265         (void) mkdir_p_label("/var/lib/systemd", 0755);
1266         r = mkdir_safe_label("/var/lib/systemd/linger", 0755, 0, 0, MKDIR_WARN_MODE);
1267         if (r < 0)
1268                 return r;
1269
1270         cc = cescape(pw->pw_name);
1271         if (!cc)
1272                 return -ENOMEM;
1273
1274         path = strjoina("/var/lib/systemd/linger/", cc);
1275         if (b) {
1276                 User *u;
1277
1278                 r = touch(path);
1279                 if (r < 0)
1280                         return r;
1281
1282                 if (manager_add_user_by_uid(m, uid, &u) >= 0)
1283                         user_start(u);
1284
1285         } else {
1286                 User *u;
1287
1288                 r = unlink(path);
1289                 if (r < 0 && errno != ENOENT)
1290                         return -errno;
1291
1292                 u = hashmap_get(m->users, UID_TO_PTR(uid));
1293                 if (u)
1294                         user_add_to_gc_queue(u);
1295         }
1296
1297         return sd_bus_reply_method_return(message, NULL);
1298 }
1299
1300 static int trigger_device(Manager *m, sd_device *parent) {
1301         _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL;
1302         int r;
1303
1304         assert(m);
1305
1306         r = sd_device_enumerator_new(&e);
1307         if (r < 0)
1308                 return r;
1309
1310         r = sd_device_enumerator_allow_uninitialized(e);
1311         if (r < 0)
1312                 return r;
1313
1314         if (parent) {
1315                 r = sd_device_enumerator_add_match_parent(e, parent);
1316                 if (r < 0)
1317                         return r;
1318         }
1319
1320         FOREACH_DEVICE(e, d) {
1321                 r = sd_device_trigger(d, SD_DEVICE_CHANGE);
1322                 if (r < 0)
1323                         log_device_debug_errno(d, r, "Failed to trigger device, ignoring: %m");
1324         }
1325
1326         return 0;
1327 }
1328
1329 static int attach_device(Manager *m, const char *seat, const char *sysfs, sd_bus_error *error) {
1330         _cleanup_(sd_device_unrefp) sd_device *d = NULL;
1331         _cleanup_free_ char *rule = NULL, *file = NULL;
1332         const char *id_for_seat;
1333         int r;
1334
1335         assert(m);
1336         assert(seat);
1337         assert(sysfs);
1338
1339         r = sd_device_new_from_syspath(&d, sysfs);
1340         if (r < 0)
1341                 return sd_bus_error_set_errnof(error, r, "Failed to open device '%s': %m", sysfs);
1342
1343         if (sd_device_has_current_tag(d, "seat") <= 0)
1344                 return sd_bus_error_set_errnof(error, ENODEV, "Device '%s' lacks 'seat' udev tag.", sysfs);
1345
1346         if (sd_device_get_property_value(d, "ID_FOR_SEAT", &id_for_seat) < 0)
1347                 return sd_bus_error_set_errnof(error, ENODEV, "Device '%s' lacks 'ID_FOR_SEAT' udev property.", sysfs);
1348
1349         if (asprintf(&file, "/etc/udev/rules.d/72-seat-%s.rules", id_for_seat) < 0)
1350                 return -ENOMEM;
1351
1352         if (asprintf(&rule, "TAG==\"seat\", ENV{ID_FOR_SEAT}==\"%s\", ENV{ID_SEAT}=\"%s\"", id_for_seat, seat) < 0)
1353                 return -ENOMEM;
1354
1355         (void) mkdir_p_label("/etc/udev/rules.d", 0755);
1356         r = write_string_file_atomic_label(file, rule);
1357         if (r < 0)
1358                 return r;
1359
1360         return trigger_device(m, d);
1361 }
1362
1363 static int flush_devices(Manager *m) {
1364         _cleanup_closedir_ DIR *d = NULL;
1365
1366         assert(m);
1367
1368         d = opendir("/etc/udev/rules.d");
1369         if (!d) {
1370                 if (errno != ENOENT)
1371                         log_warning_errno(errno, "Failed to open /etc/udev/rules.d: %m");
1372         } else
1373                 FOREACH_DIRENT_ALL(de, d, break) {
1374                         if (!dirent_is_file(de))
1375                                 continue;
1376
1377                         if (!startswith(de->d_name, "72-seat-"))
1378                                 continue;
1379
1380                         if (!endswith(de->d_name, ".rules"))
1381                                 continue;
1382
1383                         if (unlinkat(dirfd(d), de->d_name, 0) < 0)
1384                                 log_warning_errno(errno, "Failed to unlink %s: %m", de->d_name);
1385                 }
1386
1387         return trigger_device(m, NULL);
1388 }
1389
1390 static int method_attach_device(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1391         const char *sysfs, *seat;
1392         Manager *m = ASSERT_PTR(userdata);
1393         int interactive, r;
1394
1395         assert(message);
1396
1397         r = sd_bus_message_read(message, "ssb", &seat, &sysfs, &interactive);
1398         if (r < 0)
1399                 return r;
1400
1401         if (!path_is_normalized(sysfs))
1402                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not normalized", sysfs);
1403         if (!path_startswith(sysfs, "/sys"))
1404                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not in /sys", sysfs);
1405
1406         if (SEAT_IS_SELF(seat) || SEAT_IS_AUTO(seat)) {
1407                 Seat *found;
1408
1409                 r = manager_get_seat_from_creds(m, message, seat, error, &found);
1410                 if (r < 0)
1411                         return r;
1412
1413                 seat = found->id;
1414
1415         } else if (!seat_name_is_valid(seat)) /* Note that a seat does not have to exist yet for this operation to succeed */
1416                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Seat name %s is not valid", seat);
1417
1418         r = bus_verify_polkit_async(
1419                         message,
1420                         CAP_SYS_ADMIN,
1421                         "org.freedesktop.login1.attach-device",
1422                         NULL,
1423                         interactive,
1424                         UID_INVALID,
1425                         &m->polkit_registry,
1426                         error);
1427         if (r < 0)
1428                 return r;
1429         if (r == 0)
1430                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1431
1432         r = attach_device(m, seat, sysfs, error);
1433         if (r < 0)
1434                 return r;
1435
1436         return sd_bus_reply_method_return(message, NULL);
1437 }
1438
1439 static int method_flush_devices(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1440         Manager *m = ASSERT_PTR(userdata);
1441         int interactive, r;
1442
1443         assert(message);
1444
1445         r = sd_bus_message_read(message, "b", &interactive);
1446         if (r < 0)
1447                 return r;
1448
1449         r = bus_verify_polkit_async(
1450                         message,
1451                         CAP_SYS_ADMIN,
1452                         "org.freedesktop.login1.flush-devices",
1453                         NULL,
1454                         interactive,
1455                         UID_INVALID,
1456                         &m->polkit_registry,
1457                         error);
1458         if (r < 0)
1459                 return r;
1460         if (r == 0)
1461                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1462
1463         r = flush_devices(m);
1464         if (r < 0)
1465                 return r;
1466
1467         return sd_bus_reply_method_return(message, NULL);
1468 }
1469
1470 static int have_multiple_sessions(
1471                 Manager *m,
1472                 uid_t uid) {
1473
1474         Session *session;
1475
1476         assert(m);
1477
1478         /* Check for other users' sessions. Greeter sessions do not
1479          * count, and non-login sessions do not count either. */
1480         HASHMAP_FOREACH(session, m->sessions)
1481                 if (session->class == SESSION_USER &&
1482                     session->user->user_record->uid != uid)
1483                         return true;
1484
1485         return false;
1486 }
1487
1488 static int bus_manager_log_shutdown(
1489                 Manager *m,
1490                 const HandleActionData *a) {
1491         assert(m);
1492         assert(a);
1493
1494         const char *message = a->message ?: "System is shutting down";
1495         const char *log_verb = a->log_verb ? strjoina("SHUTDOWN=", a->log_verb) : NULL;
1496
1497         return log_struct(LOG_NOTICE,
1498                           "MESSAGE_ID=%s", a->message_id ?: SD_MESSAGE_SHUTDOWN_STR,
1499                           LOG_MESSAGE("%s%s%s%s.",
1500                                       message,
1501                                       m->wall_message ? " (" : "",
1502                                       strempty(m->wall_message),
1503                                       m->wall_message ? ")" : ""),
1504                           log_verb);
1505 }
1506
1507 static int lid_switch_ignore_handler(sd_event_source *e, uint64_t usec, void *userdata) {
1508         Manager *m = ASSERT_PTR(userdata);
1509
1510         assert(e);
1511
1512         m->lid_switch_ignore_event_source = sd_event_source_unref(m->lid_switch_ignore_event_source);
1513         return 0;
1514 }
1515
1516 int manager_set_lid_switch_ignore(Manager *m, usec_t until) {
1517         int r;
1518
1519         assert(m);
1520
1521         if (until <= now(CLOCK_MONOTONIC))
1522                 return 0;
1523
1524         /* We want to ignore the lid switch for a while after each
1525          * suspend, and after boot-up. Hence let's install a timer for
1526          * this. As long as the event source exists we ignore the lid
1527          * switch. */
1528
1529         if (m->lid_switch_ignore_event_source) {
1530                 usec_t u;
1531
1532                 r = sd_event_source_get_time(m->lid_switch_ignore_event_source, &u);
1533                 if (r < 0)
1534                         return r;
1535
1536                 if (until <= u)
1537                         return 0;
1538
1539                 r = sd_event_source_set_time(m->lid_switch_ignore_event_source, until);
1540         } else
1541                 r = sd_event_add_time(
1542                                 m->event,
1543                                 &m->lid_switch_ignore_event_source,
1544                                 CLOCK_MONOTONIC,
1545                                 until, 0,
1546                                 lid_switch_ignore_handler, m);
1547
1548         return r;
1549 }
1550
1551 static int send_prepare_for(Manager *m, InhibitWhat w, bool _active) {
1552         int active = _active;
1553
1554         assert(m);
1555         assert(IN_SET(w, INHIBIT_SHUTDOWN, INHIBIT_SLEEP));
1556
1557         return sd_bus_emit_signal(m->bus,
1558                                   "/org/freedesktop/login1",
1559                                   "org.freedesktop.login1.Manager",
1560                                   w == INHIBIT_SHUTDOWN ? "PrepareForShutdown" : "PrepareForSleep",
1561                                   "b",
1562                                   active);
1563 }
1564
1565 static int execute_shutdown_or_sleep(
1566                 Manager *m,
1567                 const HandleActionData *a,
1568                 sd_bus_error *error) {
1569
1570         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1571         const char *p;
1572         int r;
1573
1574         assert(m);
1575         assert(a);
1576
1577         if (a->inhibit_what == INHIBIT_SHUTDOWN)
1578                 bus_manager_log_shutdown(m, a);
1579
1580         r = bus_call_method(
1581                         m->bus,
1582                         bus_systemd_mgr,
1583                         "StartUnit",
1584                         error,
1585                         &reply,
1586                         "ss", a->target, "replace-irreversibly");
1587         if (r < 0)
1588                 goto error;
1589
1590         r = sd_bus_message_read(reply, "o", &p);
1591         if (r < 0)
1592                 goto error;
1593
1594         r = free_and_strdup(&m->action_job, p);
1595         if (r < 0)
1596                 goto error;
1597
1598         m->delayed_action = a;
1599
1600         /* Make sure the lid switch is ignored for a while */
1601         manager_set_lid_switch_ignore(m, usec_add(now(CLOCK_MONOTONIC), m->holdoff_timeout_usec));
1602
1603         return 0;
1604
1605 error:
1606         /* Tell people that they now may take a lock again */
1607         (void) send_prepare_for(m, a->inhibit_what, false);
1608
1609         return r;
1610 }
1611
1612 int manager_dispatch_delayed(Manager *manager, bool timeout) {
1613         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1614         Inhibitor *offending = NULL;
1615         int r;
1616
1617         assert(manager);
1618
1619         if (!manager->delayed_action || manager->action_job)
1620                 return 0;
1621
1622         if (manager_is_inhibited(manager, manager->delayed_action->inhibit_what, INHIBIT_DELAY, NULL, false, false, 0, &offending)) {
1623                 _cleanup_free_ char *comm = NULL, *u = NULL;
1624
1625                 if (!timeout)
1626                         return 0;
1627
1628                 (void) get_process_comm(offending->pid.pid, &comm);
1629                 u = uid_to_name(offending->uid);
1630
1631                 log_notice("Delay lock is active (UID "UID_FMT"/%s, PID "PID_FMT"/%s) but inhibitor timeout is reached.",
1632                            offending->uid, strna(u),
1633                            offending->pid.pid, strna(comm));
1634         }
1635
1636         /* Actually do the operation */
1637         r = execute_shutdown_or_sleep(manager, manager->delayed_action, &error);
1638         if (r < 0) {
1639                 log_warning("Error during inhibitor-delayed operation (already returned success to client): %s",
1640                             bus_error_message(&error, r));
1641
1642                 manager->delayed_action = NULL;
1643         }
1644
1645         return 1; /* We did some work. */
1646 }
1647
1648 static int manager_inhibit_timeout_handler(
1649                         sd_event_source *s,
1650                         uint64_t usec,
1651                         void *userdata) {
1652
1653         Manager *manager = ASSERT_PTR(userdata);
1654
1655         assert(manager->inhibit_timeout_source == s);
1656
1657         return manager_dispatch_delayed(manager, true);
1658 }
1659
1660 static int delay_shutdown_or_sleep(
1661                 Manager *m,
1662                 const HandleActionData *a) {
1663
1664         int r;
1665
1666         assert(m);
1667         assert(a);
1668
1669         if (m->inhibit_timeout_source) {
1670                 r = sd_event_source_set_time_relative(m->inhibit_timeout_source, m->inhibit_delay_max);
1671                 if (r < 0)
1672                         return log_error_errno(r, "sd_event_source_set_time_relative() failed: %m");
1673
1674                 r = sd_event_source_set_enabled(m->inhibit_timeout_source, SD_EVENT_ONESHOT);
1675                 if (r < 0)
1676                         return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
1677         } else {
1678                 r = sd_event_add_time_relative(
1679                                 m->event,
1680                                 &m->inhibit_timeout_source,
1681                                 CLOCK_MONOTONIC, m->inhibit_delay_max, 0,
1682                                 manager_inhibit_timeout_handler, m);
1683                 if (r < 0)
1684                         return r;
1685         }
1686
1687         m->delayed_action = a;
1688
1689         return 0;
1690 }
1691
1692 int bus_manager_shutdown_or_sleep_now_or_later(
1693                 Manager *m,
1694                 const HandleActionData *a,
1695                 sd_bus_error *error) {
1696
1697         _cleanup_free_ char *load_state = NULL;
1698         bool delayed;
1699         int r;
1700
1701         assert(m);
1702         assert(a);
1703         assert(!m->action_job);
1704
1705         r = unit_load_state(m->bus, a->target, &load_state);
1706         if (r < 0)
1707                 return r;
1708
1709         if (!streq(load_state, "loaded"))
1710                 return log_notice_errno(SYNTHETIC_ERRNO(EACCES),
1711                                         "Unit %s is %s, refusing operation.",
1712                                         a->target, load_state);
1713
1714         /* Tell everybody to prepare for shutdown/sleep */
1715         (void) send_prepare_for(m, a->inhibit_what, true);
1716
1717         delayed =
1718                 m->inhibit_delay_max > 0 &&
1719                 manager_is_inhibited(m, a->inhibit_what, INHIBIT_DELAY, NULL, false, false, 0, NULL);
1720
1721         if (delayed)
1722                 /* Shutdown is delayed, keep in mind what we
1723                  * want to do, and start a timeout */
1724                 r = delay_shutdown_or_sleep(m, a);
1725         else
1726                 /* Shutdown is not delayed, execute it
1727                  * immediately */
1728                 r = execute_shutdown_or_sleep(m, a, error);
1729
1730         return r;
1731 }
1732
1733 static int verify_shutdown_creds(
1734                 Manager *m,
1735                 sd_bus_message *message,
1736                 const HandleActionData *a,
1737                 uint64_t flags,
1738                 sd_bus_error *error) {
1739
1740         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
1741         bool multiple_sessions, blocked, interactive;
1742         uid_t uid;
1743         int r;
1744
1745         assert(m);
1746         assert(a);
1747         assert(message);
1748
1749         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
1750         if (r < 0)
1751                 return r;
1752
1753         r = sd_bus_creds_get_euid(creds, &uid);
1754         if (r < 0)
1755                 return r;
1756
1757         r = have_multiple_sessions(m, uid);
1758         if (r < 0)
1759                 return r;
1760
1761         multiple_sessions = r > 0;
1762         blocked = manager_is_inhibited(m, a->inhibit_what, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
1763         interactive = flags & SD_LOGIND_INTERACTIVE;
1764
1765         if (multiple_sessions) {
1766                 r = bus_verify_polkit_async(
1767                                 message,
1768                                 CAP_SYS_BOOT,
1769                                 a->polkit_action_multiple_sessions,
1770                                 NULL,
1771                                 interactive,
1772                                 UID_INVALID,
1773                                 &m->polkit_registry,
1774                                 error);
1775                 if (r < 0)
1776                         return r;
1777                 if (r == 0)
1778                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1779         }
1780
1781         if (blocked) {
1782                 /* We don't check polkit for root here, because you can't be more privileged than root */
1783                 if (uid == 0 && (flags & SD_LOGIND_ROOT_CHECK_INHIBITORS))
1784                         return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED,
1785                                                  "Access denied to root due to active block inhibitor");
1786
1787                 r = bus_verify_polkit_async(message,
1788                                 CAP_SYS_BOOT,
1789                                 a->polkit_action_ignore_inhibit,
1790                                 NULL,
1791                                 interactive,
1792                                 UID_INVALID,
1793                                 &m->polkit_registry,
1794                                 error);
1795                 if (r < 0)
1796                         return r;
1797                 if (r == 0)
1798                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1799         }
1800
1801         if (!multiple_sessions && !blocked) {
1802                 r = bus_verify_polkit_async(message,
1803                                 CAP_SYS_BOOT,
1804                                 a->polkit_action,
1805                                 NULL,
1806                                 interactive,
1807                                 UID_INVALID,
1808                                 &m->polkit_registry,
1809                                 error);
1810                 if (r < 0)
1811                         return r;
1812                 if (r == 0)
1813                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1814         }
1815
1816         return 0;
1817 }
1818
1819 static int setup_wall_message_timer(Manager *m, sd_bus_message* message) {
1820         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
1821         int r;
1822
1823         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
1824         if (r >= 0) {
1825                 const char *tty = NULL;
1826
1827                 (void) sd_bus_creds_get_uid(creds, &m->scheduled_shutdown_uid);
1828                 (void) sd_bus_creds_get_tty(creds, &tty);
1829
1830                 r = free_and_strdup(&m->scheduled_shutdown_tty, tty);
1831                 if (r < 0)
1832                         return log_oom();
1833         }
1834
1835         r = manager_setup_wall_message_timer(m);
1836         if (r < 0)
1837                 return r;
1838
1839         return 0;
1840 }
1841
1842 static int method_do_shutdown_or_sleep(
1843                 Manager *m,
1844                 sd_bus_message *message,
1845                 const HandleActionData *a,
1846                 bool with_flags,
1847                 sd_bus_error *error) {
1848
1849         uint64_t flags;
1850         int r;
1851
1852         assert(m);
1853         assert(message);
1854         assert(a);
1855
1856         if (with_flags) {
1857                 /* New style method: with flags parameter (and interactive bool in the bus message header) */
1858                 r = sd_bus_message_read(message, "t", &flags);
1859                 if (r < 0)
1860                         return r;
1861                 if ((flags & ~SD_LOGIND_SHUTDOWN_AND_SLEEP_FLAGS_PUBLIC) != 0)
1862                         return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS,
1863                                                 "Invalid flags parameter");
1864
1865                 if (FLAGS_SET(flags, (SD_LOGIND_REBOOT_VIA_KEXEC|SD_LOGIND_SOFT_REBOOT)))
1866                         return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS,
1867                                                 "Both reboot via kexec and soft reboot selected, which is not supported");
1868
1869                 if (a->handle != HANDLE_REBOOT) {
1870                         if (flags & SD_LOGIND_REBOOT_VIA_KEXEC)
1871                                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS,
1872                                                         "Reboot via kexec option is only applicable with reboot operations");
1873                         if (flags & SD_LOGIND_SOFT_REBOOT)
1874                                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS,
1875                                                         "Soft reboot option is only applicable with reboot operations");
1876                 }
1877         } else {
1878                 /* Old style method: no flags parameter, but interactive bool passed as boolean in
1879                  * payload. Let's convert this argument to the new-style flags parameter for our internal
1880                  * use. */
1881                 int interactive;
1882
1883                 r = sd_bus_message_read(message, "b", &interactive);
1884                 if (r < 0)
1885                         return r;
1886
1887                 flags = interactive ? SD_LOGIND_INTERACTIVE : 0;
1888         }
1889
1890         if ((flags & SD_LOGIND_REBOOT_VIA_KEXEC) && kexec_loaded())
1891                 a = handle_action_lookup(HANDLE_KEXEC);
1892         else if ((flags & SD_LOGIND_SOFT_REBOOT))
1893                 a = handle_action_lookup(HANDLE_SOFT_REBOOT);
1894
1895         /* Don't allow multiple jobs being executed at the same time */
1896         if (m->delayed_action)
1897                 return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS,
1898                                          "There's already a shutdown or sleep operation in progress");
1899
1900         if (a->sleep_operation >= 0) {
1901                 r = can_sleep(a->sleep_operation);
1902                 if (r == -ENOSPC)
1903                         return sd_bus_error_set(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
1904                                                 "Not enough swap space for hibernation");
1905                 if (r == 0)
1906                         return sd_bus_error_setf(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
1907                                                  "Sleep verb \"%s\" not supported",
1908                                                  sleep_operation_to_string(a->sleep_operation));
1909                 if (r < 0)
1910                         return r;
1911         }
1912
1913         r = verify_shutdown_creds(m, message, a, flags, error);
1914         if (r != 0)
1915                 return r;
1916
1917         /* reset case we're shorting a scheduled shutdown */
1918         m->unlink_nologin = false;
1919         reset_scheduled_shutdown(m);
1920
1921         m->scheduled_shutdown_timeout = 0;
1922         m->scheduled_shutdown_action = a;
1923
1924         (void) setup_wall_message_timer(m, message);
1925
1926         r = bus_manager_shutdown_or_sleep_now_or_later(m, a, error);
1927         if (r < 0)
1928                 return r;
1929
1930         return sd_bus_reply_method_return(message, NULL);
1931 }
1932
1933 static int method_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1934         Manager *m = userdata;
1935
1936         return method_do_shutdown_or_sleep(
1937                         m, message,
1938                         handle_action_lookup(HANDLE_POWEROFF),
1939                         sd_bus_message_is_method_call(message, NULL, "PowerOffWithFlags"),
1940                         error);
1941 }
1942
1943 static int method_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1944         Manager *m = userdata;
1945
1946         return method_do_shutdown_or_sleep(
1947                         m, message,
1948                         handle_action_lookup(HANDLE_REBOOT),
1949                         sd_bus_message_is_method_call(message, NULL, "RebootWithFlags"),
1950                         error);
1951 }
1952
1953 static int method_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1954         Manager *m = userdata;
1955
1956         return method_do_shutdown_or_sleep(
1957                         m, message,
1958                         handle_action_lookup(HANDLE_HALT),
1959                         sd_bus_message_is_method_call(message, NULL, "HaltWithFlags"),
1960                         error);
1961 }
1962
1963 static int method_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1964         Manager *m = userdata;
1965
1966         return method_do_shutdown_or_sleep(
1967                         m, message,
1968                         handle_action_lookup(HANDLE_SUSPEND),
1969                         sd_bus_message_is_method_call(message, NULL, "SuspendWithFlags"),
1970                         error);
1971 }
1972
1973 static int method_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1974         Manager *m = userdata;
1975
1976         return method_do_shutdown_or_sleep(
1977                         m, message,
1978                         handle_action_lookup(HANDLE_HIBERNATE),
1979                         sd_bus_message_is_method_call(message, NULL, "HibernateWithFlags"),
1980                         error);
1981 }
1982
1983 static int method_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1984         Manager *m = userdata;
1985
1986         return method_do_shutdown_or_sleep(
1987                         m, message,
1988                         handle_action_lookup(HANDLE_HYBRID_SLEEP),
1989                         sd_bus_message_is_method_call(message, NULL, "HybridSleepWithFlags"),
1990                         error);
1991 }
1992
1993 static int method_suspend_then_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1994         Manager *m = userdata;
1995
1996         return method_do_shutdown_or_sleep(
1997                         m, message,
1998                         handle_action_lookup(HANDLE_SUSPEND_THEN_HIBERNATE),
1999                         sd_bus_message_is_method_call(message, NULL, "SuspendThenHibernateWithFlags"),
2000                         error);
2001 }
2002
2003 static int nologin_timeout_handler(
2004                         sd_event_source *s,
2005                         uint64_t usec,
2006                         void *userdata) {
2007
2008         Manager *m = userdata;
2009
2010         log_info("Creating /run/nologin, blocking further logins...");
2011
2012         m->unlink_nologin =
2013                 create_shutdown_run_nologin_or_warn() >= 0;
2014
2015         return 0;
2016 }
2017
2018 static usec_t nologin_timeout_usec(usec_t elapse) {
2019         /* Issue /run/nologin five minutes before shutdown */
2020         return LESS_BY(elapse, 5 * USEC_PER_MINUTE);
2021 }
2022
2023 void manager_load_scheduled_shutdown(Manager *m) {
2024         _cleanup_fclose_ FILE *f = NULL;
2025         _cleanup_free_ char *usec = NULL,
2026                *warn_wall = NULL,
2027                *mode = NULL,
2028                *wall_message = NULL,
2029                *uid = NULL,
2030                *tty = NULL;
2031         int r;
2032
2033         assert(m);
2034
2035         r = parse_env_file(f, SHUTDOWN_SCHEDULE_FILE,
2036                         "USEC", &usec,
2037                         "WARN_WALL", &warn_wall,
2038                         "MODE", &mode,
2039                         "WALL_MESSAGE", &wall_message,
2040                         "UID", &uid,
2041                         "TTY", &tty);
2042
2043         /* reset will delete the file */
2044         reset_scheduled_shutdown(m);
2045
2046         if (r == -ENOENT)
2047                 return;
2048         if (r < 0)
2049                 return (void) log_debug_errno(r, "Failed to parse " SHUTDOWN_SCHEDULE_FILE ": %m");
2050
2051         HandleAction handle = handle_action_from_string(mode);
2052         if (handle < 0)
2053                 return (void) log_debug_errno(SYNTHETIC_ERRNO(EINVAL), "Failed to parse scheduled shutdown type: %s", mode);
2054
2055         if (!usec)
2056                 return (void) log_debug_errno(SYNTHETIC_ERRNO(EINVAL), "USEC is required");
2057         if (deserialize_usec(usec, &m->scheduled_shutdown_timeout) < 0)
2058                 return;
2059
2060         /* assign parsed type only after we know usec is also valid */
2061         m->scheduled_shutdown_action = handle_action_lookup(handle);
2062
2063         if (warn_wall) {
2064                 r = parse_boolean(warn_wall);
2065                 if (r < 0)
2066                         log_debug_errno(r, "Failed to parse enabling wall messages");
2067                 else
2068                         m->enable_wall_messages = r;
2069         }
2070
2071         if (wall_message) {
2072                 _cleanup_free_ char *unescaped = NULL;
2073                 r = cunescape(wall_message, 0, &unescaped);
2074                 if (r < 0)
2075                         log_debug_errno(r, "Failed to parse wall message: %s", wall_message);
2076                 else
2077                         free_and_replace(m->wall_message, unescaped);
2078         }
2079
2080         if (uid) {
2081                 r = parse_uid(uid, &m->scheduled_shutdown_uid);
2082                 if (r < 0)
2083                         log_debug_errno(r, "Failed to parse wall uid: %s", uid);
2084         }
2085
2086         free_and_replace(m->scheduled_shutdown_tty, tty);
2087
2088         r = manager_setup_shutdown_timers(m);
2089         if (r < 0)
2090                 return reset_scheduled_shutdown(m);
2091
2092         (void) manager_setup_wall_message_timer(m);
2093         (void) update_schedule_file(m);
2094
2095         return;
2096 }
2097
2098 static int update_schedule_file(Manager *m) {
2099         _cleanup_(unlink_and_freep) char *temp_path = NULL;
2100         _cleanup_fclose_ FILE *f = NULL;
2101         int r;
2102
2103         assert(m);
2104         assert(m->scheduled_shutdown_action);
2105
2106         r = mkdir_parents_label(SHUTDOWN_SCHEDULE_FILE, 0755);
2107         if (r < 0)
2108                 return log_error_errno(r, "Failed to create shutdown subdirectory: %m");
2109
2110         r = fopen_temporary(SHUTDOWN_SCHEDULE_FILE, &f, &temp_path);
2111         if (r < 0)
2112                 return log_error_errno(r, "Failed to save information about scheduled shutdowns: %m");
2113
2114         (void) fchmod(fileno(f), 0644);
2115
2116         serialize_usec(f, "USEC", m->scheduled_shutdown_timeout);
2117         serialize_item_format(f, "WARN_WALL", "%s", one_zero(m->enable_wall_messages));
2118         serialize_item_format(f, "MODE", "%s", handle_action_to_string(m->scheduled_shutdown_action->handle));
2119         serialize_item_format(f, "UID", UID_FMT, m->scheduled_shutdown_uid);
2120
2121         if (m->scheduled_shutdown_tty)
2122                 serialize_item_format(f, "TTY", "%s", m->scheduled_shutdown_tty);
2123
2124         if (!isempty(m->wall_message)) {
2125                 r = serialize_item_escaped(f, "WALL_MESSAGE", m->wall_message);
2126                 if (r < 0)
2127                         goto fail;
2128         }
2129
2130         r = fflush_and_check(f);
2131         if (r < 0)
2132                 goto fail;
2133
2134         if (rename(temp_path, SHUTDOWN_SCHEDULE_FILE) < 0) {
2135                 r = -errno;
2136                 goto fail;
2137         }
2138
2139         temp_path = mfree(temp_path);
2140         return 0;
2141
2142 fail:
2143         (void) unlink(SHUTDOWN_SCHEDULE_FILE);
2144
2145         return log_error_errno(r, "Failed to write information about scheduled shutdowns: %m");
2146 }
2147
2148 static void reset_scheduled_shutdown(Manager *m) {
2149         assert(m);
2150
2151         m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2152         m->wall_message_timeout_source = sd_event_source_unref(m->wall_message_timeout_source);
2153         m->nologin_timeout_source = sd_event_source_unref(m->nologin_timeout_source);
2154
2155         m->scheduled_shutdown_action = NULL;
2156         m->scheduled_shutdown_timeout = USEC_INFINITY;
2157         m->scheduled_shutdown_uid = UID_INVALID;
2158         m->scheduled_shutdown_tty = mfree(m->scheduled_shutdown_tty);
2159         m->wall_message = mfree(m->wall_message);
2160         m->shutdown_dry_run = false;
2161
2162         if (m->unlink_nologin) {
2163                 (void) unlink_or_warn("/run/nologin");
2164                 m->unlink_nologin = false;
2165         }
2166
2167         (void) unlink(SHUTDOWN_SCHEDULE_FILE);
2168 }
2169
2170 static int manager_scheduled_shutdown_handler(
2171                         sd_event_source *s,
2172                         uint64_t usec,
2173                         void *userdata) {
2174
2175         const HandleActionData *a = NULL;
2176         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
2177         Manager *m = ASSERT_PTR(userdata);
2178         int r;
2179
2180         a = m->scheduled_shutdown_action;
2181         assert(a);
2182
2183         /* Don't allow multiple jobs being executed at the same time */
2184         if (m->delayed_action) {
2185                 r = -EALREADY;
2186                 log_error("Scheduled shutdown to %s failed: shutdown or sleep operation already in progress", a->target);
2187                 goto error;
2188         }
2189
2190         if (m->shutdown_dry_run) {
2191                 /* We do not process delay inhibitors here.  Otherwise, we
2192                  * would have to be considered "in progress" (like the check
2193                  * above) for some seconds after our admin has seen the final
2194                  * wall message. */
2195
2196                 bus_manager_log_shutdown(m, a);
2197                 log_info("Running in dry run, suppressing action.");
2198                 reset_scheduled_shutdown(m);
2199
2200                 return 0;
2201         }
2202
2203         r = bus_manager_shutdown_or_sleep_now_or_later(m, m->scheduled_shutdown_action, &error);
2204         if (r < 0) {
2205                 log_error_errno(r, "Scheduled shutdown to %s failed: %m", a->target);
2206                 goto error;
2207         }
2208
2209         return 0;
2210
2211 error:
2212         reset_scheduled_shutdown(m);
2213         return r;
2214 }
2215
2216 static int method_schedule_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2217         Manager *m = ASSERT_PTR(userdata);
2218         HandleAction handle;
2219         const HandleActionData *a;
2220         uint64_t elapse;
2221         char *type;
2222         int r;
2223         bool dry_run = false;
2224
2225         assert(message);
2226
2227         r = sd_bus_message_read(message, "st", &type, &elapse);
2228         if (r < 0)
2229                 return r;
2230
2231         if (startswith(type, "dry-")) {
2232                 type += 4;
2233                 dry_run = true;
2234         }
2235
2236         handle = handle_action_from_string(type);
2237         if (!IN_SET(handle, HANDLE_POWEROFF, HANDLE_REBOOT, HANDLE_SOFT_REBOOT, HANDLE_HALT, HANDLE_KEXEC))
2238                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Unsupported shutdown type");
2239
2240         a = handle_action_lookup(handle);
2241         assert(a);
2242         assert(a->polkit_action);
2243
2244         r = verify_shutdown_creds(m, message, a, 0, error);
2245         if (r != 0)
2246                 return r;
2247
2248         m->scheduled_shutdown_action = a;
2249         m->shutdown_dry_run = dry_run;
2250         m->scheduled_shutdown_timeout = elapse;
2251
2252         r = manager_setup_shutdown_timers(m);
2253         if (r < 0)
2254                 return r;
2255
2256         r = setup_wall_message_timer(m, message);
2257         if (r >= 0)
2258                 r = update_schedule_file(m);
2259
2260         if (r < 0) {
2261                 reset_scheduled_shutdown(m);
2262                 return r;
2263         }
2264
2265         return sd_bus_reply_method_return(message, NULL);
2266 }
2267
2268 static int manager_setup_shutdown_timers(Manager* m) {
2269         int r;
2270
2271         r = event_reset_time(m->event, &m->scheduled_shutdown_timeout_source,
2272                              CLOCK_REALTIME,
2273                              m->scheduled_shutdown_timeout, 0,
2274                              manager_scheduled_shutdown_handler, m,
2275                              0, "scheduled-shutdown-timeout", true);
2276         if (r < 0)
2277                 goto fail;
2278
2279         r = event_reset_time(m->event, &m->nologin_timeout_source,
2280                              CLOCK_REALTIME,
2281                              nologin_timeout_usec(m->scheduled_shutdown_timeout), 0,
2282                              nologin_timeout_handler, m,
2283                              0, "nologin-timeout", true);
2284         if (r < 0)
2285                 goto fail;
2286
2287         return 0;
2288
2289 fail:
2290         m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2291         m->nologin_timeout_source = sd_event_source_unref(m->nologin_timeout_source);
2292
2293         return r;
2294 }
2295
2296 static int method_cancel_scheduled_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2297         Manager *m = ASSERT_PTR(userdata);
2298         const HandleActionData *a;
2299         bool cancelled;
2300         int r;
2301
2302         assert(message);
2303
2304         cancelled = m->scheduled_shutdown_action
2305                 && !IN_SET(m->scheduled_shutdown_action->handle, HANDLE_IGNORE, _HANDLE_ACTION_INVALID);
2306         if (!cancelled)
2307                 return sd_bus_reply_method_return(message, "b", false);
2308
2309         a = m->scheduled_shutdown_action;
2310         if (!a->polkit_action)
2311                 return sd_bus_error_set(error, SD_BUS_ERROR_AUTH_FAILED, "Unsupported shutdown type");
2312
2313         r = bus_verify_polkit_async(
2314                         message,
2315                         CAP_SYS_BOOT,
2316                         a->polkit_action,
2317                         NULL,
2318                         false,
2319                         UID_INVALID,
2320                         &m->polkit_registry,
2321                         error);
2322         if (r < 0)
2323                 return r;
2324         if (r == 0)
2325                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2326
2327         if (m->enable_wall_messages) {
2328                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2329                 const char *tty = NULL;
2330                 uid_t uid = 0;
2331
2332                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
2333                 if (r >= 0) {
2334                         (void) sd_bus_creds_get_uid(creds, &uid);
2335                         (void) sd_bus_creds_get_tty(creds, &tty);
2336                 }
2337
2338                 _cleanup_free_ char *username = uid_to_name(uid);
2339
2340                 log_struct(LOG_INFO,
2341                            LOG_MESSAGE("System shutdown has been cancelled"),
2342                            "ACTION=%s", handle_action_to_string(a->handle),
2343                            "MESSAGE_ID=" SD_MESSAGE_SHUTDOWN_CANCELED_STR,
2344                            username ? "OPERATOR=%s" : NULL, username);
2345
2346                 (void) wall("System shutdown has been cancelled",
2347                             username, tty, logind_wall_tty_filter, m);
2348         }
2349
2350         reset_scheduled_shutdown(m);
2351
2352         return sd_bus_reply_method_return(message, "b", true);
2353 }
2354
2355 static int method_can_shutdown_or_sleep(
2356                 Manager *m,
2357                 sd_bus_message *message,
2358                 const HandleActionData *a,
2359                 sd_bus_error *error) {
2360
2361         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2362         bool multiple_sessions, challenge, blocked;
2363         const char *result = NULL;
2364         uid_t uid;
2365         int r;
2366
2367         assert(m);
2368         assert(message);
2369         assert(a);
2370
2371         if (a->sleep_operation >= 0) {
2372                 r = can_sleep(a->sleep_operation);
2373                 if (IN_SET(r,  0, -ENOSPC))
2374                         return sd_bus_reply_method_return(message, "s", "na");
2375                 if (r < 0)
2376                         return r;
2377         }
2378
2379         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
2380         if (r < 0)
2381                 return r;
2382
2383         r = sd_bus_creds_get_euid(creds, &uid);
2384         if (r < 0)
2385                 return r;
2386
2387         r = have_multiple_sessions(m, uid);
2388         if (r < 0)
2389                 return r;
2390
2391         multiple_sessions = r > 0;
2392         blocked = manager_is_inhibited(m, a->inhibit_what, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
2393
2394         HandleAction handle = handle_action_from_string(sleep_operation_to_string(a->sleep_operation));
2395         if (handle >= 0) {
2396                 const char *target;
2397
2398                 target = handle_action_lookup(handle)->target;
2399                 if (target) {
2400                         _cleanup_free_ char *load_state = NULL;
2401
2402                         r = unit_load_state(m->bus, target, &load_state);
2403                         if (r < 0)
2404                                 return r;
2405
2406                         if (!streq(load_state, "loaded")) {
2407                                 result = "no";
2408                                 goto finish;
2409                         }
2410                 }
2411         }
2412
2413         if (multiple_sessions) {
2414                 r = bus_test_polkit(message, CAP_SYS_BOOT, a->polkit_action_multiple_sessions, 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         if (blocked) {
2427                 r = bus_test_polkit(message, CAP_SYS_BOOT, a->polkit_action_ignore_inhibit, NULL, UID_INVALID, &challenge, error);
2428                 if (r < 0)
2429                         return r;
2430
2431                 if (r > 0) {
2432                         if (!result)
2433                                 result = "yes";
2434                 } else if (challenge) {
2435                         if (!result || streq(result, "yes"))
2436                                 result = "challenge";
2437                 } else
2438                         result = "no";
2439         }
2440
2441         if (!multiple_sessions && !blocked) {
2442                 /* If neither inhibit nor multiple sessions
2443                  * apply then just check the normal policy */
2444
2445                 r = bus_test_polkit(message, CAP_SYS_BOOT, a->polkit_action, NULL, UID_INVALID, &challenge, error);
2446                 if (r < 0)
2447                         return r;
2448
2449                 if (r > 0)
2450                         result = "yes";
2451                 else if (challenge)
2452                         result = "challenge";
2453                 else
2454                         result = "no";
2455         }
2456
2457  finish:
2458         return sd_bus_reply_method_return(message, "s", result);
2459 }
2460
2461 static int method_can_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2462         Manager *m = userdata;
2463
2464         return method_can_shutdown_or_sleep(
2465                         m, message, handle_action_lookup(HANDLE_POWEROFF),
2466                         error);
2467 }
2468
2469 static int method_can_reboot(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, handle_action_lookup(HANDLE_REBOOT),
2474                         error);
2475 }
2476
2477 static int method_can_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2478         Manager *m = userdata;
2479
2480         return method_can_shutdown_or_sleep(
2481                         m, message, handle_action_lookup(HANDLE_HALT),
2482                         error);
2483 }
2484
2485 static int method_can_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2486         Manager *m = userdata;
2487
2488         return method_can_shutdown_or_sleep(
2489                         m, message, handle_action_lookup(HANDLE_SUSPEND),
2490                         error);
2491 }
2492
2493 static int method_can_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2494         Manager *m = userdata;
2495
2496         return method_can_shutdown_or_sleep(
2497                         m, message, handle_action_lookup(HANDLE_HIBERNATE),
2498                         error);
2499 }
2500
2501 static int method_can_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2502         Manager *m = userdata;
2503
2504         return method_can_shutdown_or_sleep(
2505                         m, message, handle_action_lookup(HANDLE_HYBRID_SLEEP),
2506                         error);
2507 }
2508
2509 static int method_can_suspend_then_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2510         Manager *m = userdata;
2511
2512         return method_can_shutdown_or_sleep(
2513                         m, message, handle_action_lookup(HANDLE_SUSPEND_THEN_HIBERNATE),
2514                         error);
2515 }
2516
2517 static int property_get_reboot_parameter(
2518                 sd_bus *bus,
2519                 const char *path,
2520                 const char *interface,
2521                 const char *property,
2522                 sd_bus_message *reply,
2523                 void *userdata,
2524                 sd_bus_error *error) {
2525         _cleanup_free_ char *parameter = NULL;
2526         int r;
2527
2528         assert(bus);
2529         assert(reply);
2530         assert(userdata);
2531
2532         r = read_reboot_parameter(&parameter);
2533         if (r < 0)
2534                 return r;
2535
2536         return sd_bus_message_append(reply, "s", parameter);
2537 }
2538
2539 static int method_set_reboot_parameter(
2540                 sd_bus_message *message,
2541                 void *userdata,
2542                 sd_bus_error *error) {
2543
2544         Manager *m = ASSERT_PTR(userdata);
2545         const char *arg;
2546         int r;
2547
2548         assert(message);
2549
2550         r = sd_bus_message_read(message, "s", &arg);
2551         if (r < 0)
2552                 return r;
2553
2554         r = detect_container();
2555         if (r < 0)
2556                 return r;
2557         if (r > 0)
2558                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED,
2559                                          "Reboot parameter not supported in containers, refusing.");
2560
2561         r = bus_verify_polkit_async(message,
2562                                     CAP_SYS_ADMIN,
2563                                     "org.freedesktop.login1.set-reboot-parameter",
2564                                     NULL,
2565                                     false,
2566                                     UID_INVALID,
2567                                     &m->polkit_registry,
2568                                     error);
2569         if (r < 0)
2570                 return r;
2571         if (r == 0)
2572                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2573
2574         r = update_reboot_parameter_and_warn(arg, false);
2575         if (r < 0)
2576                 return r;
2577
2578         return sd_bus_reply_method_return(message, NULL);
2579 }
2580
2581 static int method_can_reboot_parameter(
2582                 sd_bus_message *message,
2583                 void *userdata,
2584                 sd_bus_error *error) {
2585
2586         _unused_ Manager *m = ASSERT_PTR(userdata);
2587         int r;
2588
2589         assert(message);
2590
2591         r = detect_container();
2592         if (r < 0)
2593                 return r;
2594         if (r > 0) /* Inside containers, specifying a reboot parameter, doesn't make much sense */
2595                 return sd_bus_reply_method_return(message, "s", "na");
2596
2597         return return_test_polkit(
2598                         message,
2599                         CAP_SYS_ADMIN,
2600                         "org.freedesktop.login1.set-reboot-parameter",
2601                         NULL,
2602                         UID_INVALID,
2603                         error);
2604 }
2605
2606 static int property_get_reboot_to_firmware_setup(
2607                 sd_bus *bus,
2608                 const char *path,
2609                 const char *interface,
2610                 const char *property,
2611                 sd_bus_message *reply,
2612                 void *userdata,
2613                 sd_bus_error *error) {
2614         int r;
2615
2616         assert(bus);
2617         assert(reply);
2618         assert(userdata);
2619
2620         r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
2621         if (r == -ENXIO) {
2622                 /* EFI case: let's see what is currently configured in the EFI variables */
2623                 r = efi_get_reboot_to_firmware();
2624                 if (r < 0 && r != -EOPNOTSUPP)
2625                         log_warning_errno(r, "Failed to determine reboot-to-firmware-setup state: %m");
2626         } else if (r < 0)
2627                 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
2628         else if (r > 0) {
2629                 /* Non-EFI case: let's see whether /run/systemd/reboot-to-firmware-setup exists. */
2630                 if (access("/run/systemd/reboot-to-firmware-setup", F_OK) < 0) {
2631                         if (errno != ENOENT)
2632                                 log_warning_errno(errno, "Failed to check whether /run/systemd/reboot-to-firmware-setup exists: %m");
2633
2634                         r = false;
2635                 } else
2636                         r = true;
2637         }
2638
2639         return sd_bus_message_append(reply, "b", r > 0);
2640 }
2641
2642 static int method_set_reboot_to_firmware_setup(
2643                 sd_bus_message *message,
2644                 void *userdata,
2645                 sd_bus_error *error) {
2646
2647         Manager *m = ASSERT_PTR(userdata);
2648         bool use_efi;
2649         int b, r;
2650
2651         assert(message);
2652
2653         r = sd_bus_message_read(message, "b", &b);
2654         if (r < 0)
2655                 return r;
2656
2657         r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
2658         if (r == -ENXIO) {
2659                 /* EFI case: let's see what the firmware supports */
2660
2661                 r = efi_reboot_to_firmware_supported();
2662                 if (r == -EOPNOTSUPP)
2663                         return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Firmware does not support boot into firmware.");
2664                 if (r < 0)
2665                         return r;
2666
2667                 use_efi = true;
2668
2669         } else if (r <= 0) {
2670                 /* non-EFI case: $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP is set to off */
2671
2672                 if (r < 0)
2673                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
2674
2675                 return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Firmware does not support boot into firmware.");
2676         } else
2677                 /* non-EFI case: $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP is set to on */
2678                 use_efi = false;
2679
2680         r = bus_verify_polkit_async(message,
2681                                     CAP_SYS_ADMIN,
2682                                     "org.freedesktop.login1.set-reboot-to-firmware-setup",
2683                                     NULL,
2684                                     false,
2685                                     UID_INVALID,
2686                                     &m->polkit_registry,
2687                                     error);
2688         if (r < 0)
2689                 return r;
2690         if (r == 0)
2691                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2692
2693         if (use_efi) {
2694                 r = efi_set_reboot_to_firmware(b);
2695                 if (r < 0)
2696                         return r;
2697         } else {
2698                 if (b) {
2699                         r = touch("/run/systemd/reboot-to-firmware-setup");
2700                         if (r < 0)
2701                                 return r;
2702                 } else {
2703                         if (unlink("/run/systemd/reboot-to-firmware-setup") < 0 && errno != ENOENT)
2704                                 return -errno;
2705                 }
2706         }
2707
2708         return sd_bus_reply_method_return(message, NULL);
2709 }
2710
2711 static int method_can_reboot_to_firmware_setup(
2712                 sd_bus_message *message,
2713                 void *userdata,
2714                 sd_bus_error *error) {
2715
2716         _unused_ Manager *m = ASSERT_PTR(userdata);
2717         int r;
2718
2719         assert(message);
2720
2721         r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
2722         if (r == -ENXIO) {
2723                 /* EFI case: let's see what the firmware supports */
2724
2725                 r = efi_reboot_to_firmware_supported();
2726                 if (r < 0) {
2727                         if (r != -EOPNOTSUPP)
2728                                 log_warning_errno(r, "Failed to determine whether reboot to firmware is supported: %m");
2729
2730                         return sd_bus_reply_method_return(message, "s", "na");
2731                 }
2732
2733         } else if (r <= 0) {
2734                 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP */
2735
2736                 if (r < 0)
2737                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
2738
2739                 return sd_bus_reply_method_return(message, "s", "na");
2740         }
2741
2742         return return_test_polkit(
2743                         message,
2744                         CAP_SYS_ADMIN,
2745                         "org.freedesktop.login1.set-reboot-to-firmware-setup",
2746                         NULL,
2747                         UID_INVALID,
2748                         error);
2749 }
2750
2751 static int property_get_reboot_to_boot_loader_menu(
2752                 sd_bus *bus,
2753                 const char *path,
2754                 const char *interface,
2755                 const char *property,
2756                 sd_bus_message *reply,
2757                 void *userdata,
2758                 sd_bus_error *error) {
2759
2760         uint64_t x = UINT64_MAX;
2761         int r;
2762
2763         assert(bus);
2764         assert(reply);
2765         assert(userdata);
2766
2767         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
2768         if (r == -ENXIO) {
2769                 /* EFI case: returns the current value of LoaderConfigTimeoutOneShot. Three cases are distinguished:
2770                  *
2771                  *     1. Variable not set, boot into boot loader menu is not enabled (we return UINT64_MAX to the user)
2772                  *     2. Variable set to "0", boot into boot loader menu is enabled with no timeout (we return 0 to the user)
2773                  *     3. Variable set to numeric value formatted in ASCII, boot into boot loader menu with the specified timeout in seconds
2774                  */
2775
2776                 r = efi_loader_get_config_timeout_one_shot(&x);
2777                 if (r < 0) {
2778                         if (r != -ENOENT)
2779                                 log_warning_errno(r, "Failed to read LoaderConfigTimeoutOneShot variable, ignoring: %m");
2780                 }
2781
2782         } else if (r < 0)
2783                 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
2784         else if (r > 0) {
2785                 _cleanup_free_ char *v = NULL;
2786
2787                 /* Non-EFI case, let's process /run/systemd/reboot-to-boot-loader-menu. */
2788
2789                 r = read_one_line_file("/run/systemd/reboot-to-boot-loader-menu", &v);
2790                 if (r < 0) {
2791                         if (r != -ENOENT)
2792                                 log_warning_errno(r, "Failed to read /run/systemd/reboot-to-boot-loader-menu: %m");
2793                 } else {
2794                         r = safe_atou64(v, &x);
2795                         if (r < 0)
2796                                 log_warning_errno(r, "Failed to parse /run/systemd/reboot-to-boot-loader-menu: %m");
2797                 }
2798         }
2799
2800         return sd_bus_message_append(reply, "t", x);
2801 }
2802
2803 static int method_set_reboot_to_boot_loader_menu(
2804                 sd_bus_message *message,
2805                 void *userdata,
2806                 sd_bus_error *error) {
2807
2808         Manager *m = ASSERT_PTR(userdata);
2809         bool use_efi;
2810         uint64_t x;
2811         int r;
2812
2813         assert(message);
2814
2815         r = sd_bus_message_read(message, "t", &x);
2816         if (r < 0)
2817                 return r;
2818
2819         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
2820         if (r == -ENXIO) {
2821                 uint64_t features;
2822
2823                 /* EFI case: let's see if booting into boot loader menu is supported. */
2824
2825                 r = efi_loader_get_features(&features);
2826                 if (r < 0)
2827                         log_warning_errno(r, "Failed to determine whether reboot to boot loader menu is supported: %m");
2828                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT))
2829                         return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader does not support boot into boot loader menu.");
2830
2831                 use_efi = true;
2832
2833         } else if (r <= 0) {
2834                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU is set to off */
2835
2836                 if (r < 0)
2837                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
2838
2839                 return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader does not support boot into boot loader menu.");
2840         } else
2841                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU is set to on */
2842                 use_efi = false;
2843
2844         r = bus_verify_polkit_async(message,
2845                                     CAP_SYS_ADMIN,
2846                                     "org.freedesktop.login1.set-reboot-to-boot-loader-menu",
2847                                     NULL,
2848                                     false,
2849                                     UID_INVALID,
2850                                     &m->polkit_registry,
2851                                     error);
2852         if (r < 0)
2853                 return r;
2854         if (r == 0)
2855                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2856
2857         if (use_efi) {
2858                 if (x == UINT64_MAX)
2859                         r = efi_set_variable(EFI_LOADER_VARIABLE(LoaderConfigTimeoutOneShot), NULL, 0);
2860                 else {
2861                         char buf[DECIMAL_STR_MAX(uint64_t) + 1];
2862                         xsprintf(buf, "%" PRIu64, DIV_ROUND_UP(x, USEC_PER_SEC)); /* second granularity */
2863
2864                         r = efi_set_variable_string(EFI_LOADER_VARIABLE(LoaderConfigTimeoutOneShot), buf);
2865                 }
2866                 if (r < 0)
2867                         return r;
2868         } else {
2869                 if (x == UINT64_MAX) {
2870                         if (unlink("/run/systemd/reboot-to-boot-loader-menu") < 0 && errno != ENOENT)
2871                                 return -errno;
2872                 } else {
2873                         char buf[DECIMAL_STR_MAX(uint64_t) + 1];
2874
2875                         xsprintf(buf, "%" PRIu64, x); /* μs granularity */
2876
2877                         r = write_string_file_atomic_label("/run/systemd/reboot-to-boot-loader-menu", buf);
2878                         if (r < 0)
2879                                 return r;
2880                 }
2881         }
2882
2883         return sd_bus_reply_method_return(message, NULL);
2884 }
2885
2886 static int method_can_reboot_to_boot_loader_menu(
2887                 sd_bus_message *message,
2888                 void *userdata,
2889                 sd_bus_error *error) {
2890
2891         _unused_ Manager *m = ASSERT_PTR(userdata);
2892         int r;
2893
2894         assert(message);
2895
2896         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
2897         if (r == -ENXIO) {
2898                 uint64_t features = 0;
2899
2900                 /* EFI case, let's see if booting into boot loader menu is supported. */
2901
2902                 r = efi_loader_get_features(&features);
2903                 if (r < 0)
2904                         log_warning_errno(r, "Failed to determine whether reboot to boot loader menu is supported: %m");
2905                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT))
2906                         return sd_bus_reply_method_return(message, "s", "na");
2907
2908         } else if (r <= 0) {
2909                 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU */
2910
2911                 if (r < 0)
2912                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
2913
2914                 return sd_bus_reply_method_return(message, "s", "na");
2915         }
2916
2917         return return_test_polkit(
2918                         message,
2919                         CAP_SYS_ADMIN,
2920                         "org.freedesktop.login1.set-reboot-to-boot-loader-menu",
2921                         NULL,
2922                         UID_INVALID,
2923                         error);
2924 }
2925
2926 static int property_get_reboot_to_boot_loader_entry(
2927                 sd_bus *bus,
2928                 const char *path,
2929                 const char *interface,
2930                 const char *property,
2931                 sd_bus_message *reply,
2932                 void *userdata,
2933                 sd_bus_error *error) {
2934
2935         _cleanup_free_ char *v = NULL;
2936         Manager *m = ASSERT_PTR(userdata);
2937         const char *x = NULL;
2938         int r;
2939
2940         assert(bus);
2941         assert(reply);
2942
2943         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
2944         if (r == -ENXIO) {
2945                 /* EFI case: let's read the LoaderEntryOneShot variable */
2946
2947                 r = efi_loader_update_entry_one_shot_cache(&m->efi_loader_entry_one_shot, &m->efi_loader_entry_one_shot_stat);
2948                 if (r < 0) {
2949                         if (r != -ENOENT)
2950                                 log_warning_errno(r, "Failed to read LoaderEntryOneShot variable, ignoring: %m");
2951                 } else
2952                         x = m->efi_loader_entry_one_shot;
2953
2954         } else if (r < 0)
2955                 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
2956         else if (r > 0) {
2957
2958                 /* Non-EFI case, let's process /run/systemd/reboot-to-boot-loader-entry. */
2959
2960                 r = read_one_line_file("/run/systemd/reboot-to-boot-loader-entry", &v);
2961                 if (r < 0) {
2962                         if (r != -ENOENT)
2963                                 log_warning_errno(r, "Failed to read /run/systemd/reboot-to-boot-loader-entry, ignoring: %m");
2964                 } else if (!efi_loader_entry_name_valid(v))
2965                         log_warning("/run/systemd/reboot-to-boot-loader-entry is not valid, ignoring.");
2966                 else
2967                         x = v;
2968         }
2969
2970         return sd_bus_message_append(reply, "s", x);
2971 }
2972
2973 static int boot_loader_entry_exists(Manager *m, const char *id) {
2974         _cleanup_(boot_config_free) BootConfig config = BOOT_CONFIG_NULL;
2975         int r;
2976
2977         assert(m);
2978         assert(id);
2979
2980         r = boot_config_load_auto(&config, NULL, NULL);
2981         if (r < 0 && r != -ENOKEY) /* don't complain if no GPT is found, hence skip ENOKEY */
2982                 return r;
2983
2984         r = manager_read_efi_boot_loader_entries(m);
2985         if (r >= 0)
2986                 (void) boot_config_augment_from_loader(&config, m->efi_boot_loader_entries, /* auto_only= */ true);
2987
2988         return !!boot_config_find_entry(&config, id);
2989 }
2990
2991 static int method_set_reboot_to_boot_loader_entry(
2992                 sd_bus_message *message,
2993                 void *userdata,
2994                 sd_bus_error *error) {
2995
2996         Manager *m = ASSERT_PTR(userdata);
2997         bool use_efi;
2998         const char *v;
2999         int r;
3000
3001         assert(message);
3002
3003         r = sd_bus_message_read(message, "s", &v);
3004         if (r < 0)
3005                 return r;
3006
3007         if (isempty(v))
3008                 v = NULL;
3009         else if (efi_loader_entry_name_valid(v)) {
3010                 r = boot_loader_entry_exists(m, v);
3011                 if (r < 0)
3012                         return r;
3013                 if (r == 0)
3014                         return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader entry '%s' is not known.", v);
3015         } else
3016                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Boot loader entry name '%s' is not valid, refusing.", v);
3017
3018         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
3019         if (r == -ENXIO) {
3020                 uint64_t features;
3021
3022                 /* EFI case: let's see if booting into boot loader entry is supported. */
3023
3024                 r = efi_loader_get_features(&features);
3025                 if (r < 0)
3026                         log_warning_errno(r, "Failed to determine whether reboot into boot loader entry is supported: %m");
3027                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_ENTRY_ONESHOT))
3028                         return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Loader does not support boot into boot loader entry.");
3029
3030                 use_efi = true;
3031
3032         } else if (r <= 0) {
3033                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY is set to off */
3034
3035                 if (r < 0)
3036                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
3037
3038                 return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Loader does not support boot into boot loader entry.");
3039         } else
3040                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY is set to on */
3041                 use_efi = false;
3042
3043         r = bus_verify_polkit_async(message,
3044                                     CAP_SYS_ADMIN,
3045                                     "org.freedesktop.login1.set-reboot-to-boot-loader-entry",
3046                                     NULL,
3047                                     false,
3048                                     UID_INVALID,
3049                                     &m->polkit_registry,
3050                                     error);
3051         if (r < 0)
3052                 return r;
3053         if (r == 0)
3054                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
3055
3056         if (use_efi) {
3057                 if (isempty(v))
3058                         /* Delete item */
3059                         r = efi_set_variable(EFI_LOADER_VARIABLE(LoaderEntryOneShot), NULL, 0);
3060                 else
3061                         r = efi_set_variable_string(EFI_LOADER_VARIABLE(LoaderEntryOneShot), v);
3062                 if (r < 0)
3063                         return r;
3064         } else {
3065                 if (isempty(v)) {
3066                         if (unlink("/run/systemd/reboot-to-boot-loader-entry") < 0 && errno != ENOENT)
3067                                 return -errno;
3068                 } else {
3069                         r = write_string_file_atomic_label("/run/systemd/reboot-boot-to-loader-entry", v);
3070                         if (r < 0)
3071                                 return r;
3072                 }
3073         }
3074
3075         return sd_bus_reply_method_return(message, NULL);
3076 }
3077
3078 static int method_can_reboot_to_boot_loader_entry(
3079                 sd_bus_message *message,
3080                 void *userdata,
3081                 sd_bus_error *error) {
3082
3083         _unused_ Manager *m = ASSERT_PTR(userdata);
3084         int r;
3085
3086         assert(message);
3087
3088         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
3089         if (r == -ENXIO) {
3090                 uint64_t features = 0;
3091
3092                 /* EFI case, let's see if booting into boot loader entry is supported. */
3093
3094                 r = efi_loader_get_features(&features);
3095                 if (r < 0)
3096                         log_warning_errno(r, "Failed to determine whether reboot to boot loader entry is supported: %m");
3097                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_ENTRY_ONESHOT))
3098                         return sd_bus_reply_method_return(message, "s", "na");
3099
3100         } else if (r <= 0) {
3101                 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY */
3102
3103                 if (r < 0)
3104                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
3105
3106                 return sd_bus_reply_method_return(message, "s", "na");
3107         }
3108
3109         return return_test_polkit(
3110                         message,
3111                         CAP_SYS_ADMIN,
3112                         "org.freedesktop.login1.set-reboot-to-boot-loader-entry",
3113                         NULL,
3114                         UID_INVALID,
3115                         error);
3116 }
3117
3118 static int property_get_boot_loader_entries(
3119                 sd_bus *bus,
3120                 const char *path,
3121                 const char *interface,
3122                 const char *property,
3123                 sd_bus_message *reply,
3124                 void *userdata,
3125                 sd_bus_error *error) {
3126
3127         _cleanup_(boot_config_free) BootConfig config = BOOT_CONFIG_NULL;
3128         Manager *m = ASSERT_PTR(userdata);
3129         size_t i;
3130         int r;
3131
3132         assert(bus);
3133         assert(reply);
3134
3135         r = boot_config_load_auto(&config, NULL, NULL);
3136         if (r < 0 && r != -ENOKEY) /* don't complain if there's no GPT found */
3137                 return r;
3138
3139         r = manager_read_efi_boot_loader_entries(m);
3140         if (r >= 0)
3141                 (void) boot_config_augment_from_loader(&config, m->efi_boot_loader_entries, /* auto_only= */ true);
3142
3143         r = sd_bus_message_open_container(reply, 'a', "s");
3144         if (r < 0)
3145                 return r;
3146
3147         for (i = 0; i < config.n_entries; i++) {
3148                 BootEntry *e = config.entries + i;
3149
3150                 r = sd_bus_message_append(reply, "s", e->id);
3151                 if (r < 0)
3152                         return r;
3153         }
3154
3155         return sd_bus_message_close_container(reply);
3156 }
3157
3158 static int method_set_wall_message(
3159                 sd_bus_message *message,
3160                 void *userdata,
3161                 sd_bus_error *error) {
3162
3163         int r;
3164         Manager *m = ASSERT_PTR(userdata);
3165         char *wall_message;
3166         int enable_wall_messages;
3167
3168         assert(message);
3169
3170         r = sd_bus_message_read(message, "sb", &wall_message, &enable_wall_messages);
3171         if (r < 0)
3172                 return r;
3173
3174         if (strlen(wall_message) > WALL_MESSAGE_MAX)
3175                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3176                         "Wall message too long, maximum permitted length is %u characters.",
3177                         WALL_MESSAGE_MAX);
3178
3179         /* Short-circuit the operation if the desired state is already in place, to
3180          * avoid an unnecessary polkit permission check. */
3181         if (streq_ptr(m->wall_message, empty_to_null(wall_message)) &&
3182             m->enable_wall_messages == enable_wall_messages)
3183                 goto done;
3184
3185         r = bus_verify_polkit_async(message,
3186                                     CAP_SYS_ADMIN,
3187                                     "org.freedesktop.login1.set-wall-message",
3188                                     NULL,
3189                                     false,
3190                                     UID_INVALID,
3191                                     &m->polkit_registry,
3192                                     error);
3193         if (r < 0)
3194                 return r;
3195         if (r == 0)
3196                 return 1; /* Will call us back */
3197
3198         r = free_and_strdup(&m->wall_message, empty_to_null(wall_message));
3199         if (r < 0)
3200                 return log_oom();
3201
3202         m->enable_wall_messages = enable_wall_messages;
3203
3204  done:
3205         return sd_bus_reply_method_return(message, NULL);
3206 }
3207
3208 static int method_inhibit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3209         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
3210         _cleanup_(pidref_done) PidRef pidref = PIDREF_NULL;
3211         const char *who, *why, *what, *mode;
3212         _cleanup_free_ char *id = NULL;
3213         _cleanup_close_ int fifo_fd = -EBADF;
3214         Manager *m = ASSERT_PTR(userdata);
3215         InhibitMode mm;
3216         InhibitWhat w;
3217         pid_t pid;
3218         uid_t uid;
3219         int r;
3220
3221         assert(message);
3222
3223         r = sd_bus_message_read(message, "ssss", &what, &who, &why, &mode);
3224         if (r < 0)
3225                 return r;
3226
3227         w = inhibit_what_from_string(what);
3228         if (w <= 0)
3229                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3230                                          "Invalid what specification %s", what);
3231
3232         mm = inhibit_mode_from_string(mode);
3233         if (mm < 0)
3234                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3235                                          "Invalid mode specification %s", mode);
3236
3237         /* Delay is only supported for shutdown/sleep */
3238         if (mm == INHIBIT_DELAY && (w & ~(INHIBIT_SHUTDOWN|INHIBIT_SLEEP)))
3239                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3240                                          "Delay inhibitors only supported for shutdown and sleep");
3241
3242         /* Don't allow taking delay locks while we are already
3243          * executing the operation. We shouldn't create the impression
3244          * that the lock was successful if the machine is about to go
3245          * down/suspend any moment. */
3246         if (m->delayed_action && m->delayed_action->inhibit_what & w)
3247                 return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS,
3248                                          "The operation inhibition has been requested for is already running");
3249
3250         r = bus_verify_polkit_async(
3251                         message,
3252                         CAP_SYS_BOOT,
3253                         w == INHIBIT_SHUTDOWN             ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-shutdown" : "org.freedesktop.login1.inhibit-delay-shutdown") :
3254                         w == INHIBIT_SLEEP                ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-sleep"    : "org.freedesktop.login1.inhibit-delay-sleep") :
3255                         w == INHIBIT_IDLE                 ? "org.freedesktop.login1.inhibit-block-idle" :
3256                         w == INHIBIT_HANDLE_POWER_KEY     ? "org.freedesktop.login1.inhibit-handle-power-key" :
3257                         w == INHIBIT_HANDLE_SUSPEND_KEY   ? "org.freedesktop.login1.inhibit-handle-suspend-key" :
3258                         w == INHIBIT_HANDLE_REBOOT_KEY    ? "org.freedesktop.login1.inhibit-handle-reboot-key" :
3259                         w == INHIBIT_HANDLE_HIBERNATE_KEY ? "org.freedesktop.login1.inhibit-handle-hibernate-key" :
3260                                                             "org.freedesktop.login1.inhibit-handle-lid-switch",
3261                         NULL,
3262                         false,
3263                         UID_INVALID,
3264                         &m->polkit_registry,
3265                         error);
3266         if (r < 0)
3267                 return r;
3268         if (r == 0)
3269                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
3270
3271         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID|SD_BUS_CREDS_PID, &creds);
3272         if (r < 0)
3273                 return r;
3274
3275         r = sd_bus_creds_get_euid(creds, &uid);
3276         if (r < 0)
3277                 return r;
3278
3279         r = sd_bus_creds_get_pid(creds, &pid);
3280         if (r < 0)
3281                 return r;
3282
3283         r = pidref_set_pid(&pidref, pid);
3284         if (r < 0)
3285                 return sd_bus_error_set_errnof(error, r, "Failed pin source process "PID_FMT": %m", pid);
3286
3287         if (hashmap_size(m->inhibitors) >= m->inhibitors_max)
3288                 return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED,
3289                                          "Maximum number of inhibitors (%" PRIu64 ") reached, refusing further inhibitors.",
3290                                          m->inhibitors_max);
3291
3292         do {
3293                 id = mfree(id);
3294
3295                 if (asprintf(&id, "%" PRIu64, ++m->inhibit_counter) < 0)
3296                         return -ENOMEM;
3297
3298         } while (hashmap_get(m->inhibitors, id));
3299
3300         _cleanup_(inhibitor_freep) Inhibitor *i = NULL;
3301         r = manager_add_inhibitor(m, id, &i);
3302         if (r < 0)
3303                 return r;
3304
3305         i->what = w;
3306         i->mode = mm;
3307         i->pid = TAKE_PIDREF(pidref);
3308         i->uid = uid;
3309         i->why = strdup(why);
3310         i->who = strdup(who);
3311
3312         if (!i->why || !i->who)
3313                 return -ENOMEM;
3314
3315         fifo_fd = inhibitor_create_fifo(i);
3316         if (fifo_fd < 0)
3317                 return fifo_fd;
3318
3319         r = inhibitor_start(i);
3320         if (r < 0)
3321                 return r;
3322         TAKE_PTR(i);
3323
3324         return sd_bus_reply_method_return(message, "h", fifo_fd);
3325 }
3326
3327 static const sd_bus_vtable manager_vtable[] = {
3328         SD_BUS_VTABLE_START(0),
3329
3330         SD_BUS_WRITABLE_PROPERTY("EnableWallMessages", "b", bus_property_get_bool, bus_property_set_bool, offsetof(Manager, enable_wall_messages), 0),
3331         SD_BUS_WRITABLE_PROPERTY("WallMessage", "s", NULL, NULL, offsetof(Manager, wall_message), 0),
3332
3333         SD_BUS_PROPERTY("NAutoVTs", "u", NULL, offsetof(Manager, n_autovts), SD_BUS_VTABLE_PROPERTY_CONST),
3334         SD_BUS_PROPERTY("KillOnlyUsers", "as", NULL, offsetof(Manager, kill_only_users), SD_BUS_VTABLE_PROPERTY_CONST),
3335         SD_BUS_PROPERTY("KillExcludeUsers", "as", NULL, offsetof(Manager, kill_exclude_users), SD_BUS_VTABLE_PROPERTY_CONST),
3336         SD_BUS_PROPERTY("KillUserProcesses", "b", bus_property_get_bool, offsetof(Manager, kill_user_processes), SD_BUS_VTABLE_PROPERTY_CONST),
3337         SD_BUS_PROPERTY("RebootParameter", "s", property_get_reboot_parameter, 0, 0),
3338         SD_BUS_PROPERTY("RebootToFirmwareSetup", "b", property_get_reboot_to_firmware_setup, 0, 0),
3339         SD_BUS_PROPERTY("RebootToBootLoaderMenu", "t", property_get_reboot_to_boot_loader_menu, 0, 0),
3340         SD_BUS_PROPERTY("RebootToBootLoaderEntry", "s", property_get_reboot_to_boot_loader_entry, 0, 0),
3341         SD_BUS_PROPERTY("BootLoaderEntries", "as", property_get_boot_loader_entries, 0, SD_BUS_VTABLE_PROPERTY_CONST),
3342         SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3343         SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3344         SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3345         SD_BUS_PROPERTY("BlockInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3346         SD_BUS_PROPERTY("DelayInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3347         SD_BUS_PROPERTY("InhibitDelayMaxUSec", "t", NULL, offsetof(Manager, inhibit_delay_max), SD_BUS_VTABLE_PROPERTY_CONST),
3348         SD_BUS_PROPERTY("UserStopDelayUSec", "t", NULL, offsetof(Manager, user_stop_delay), SD_BUS_VTABLE_PROPERTY_CONST),
3349         SD_BUS_PROPERTY("HandlePowerKey", "s", property_get_handle_action, offsetof(Manager, handle_power_key), SD_BUS_VTABLE_PROPERTY_CONST),
3350         SD_BUS_PROPERTY("HandlePowerKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_power_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3351         SD_BUS_PROPERTY("HandleRebootKey", "s", property_get_handle_action, offsetof(Manager, handle_reboot_key), SD_BUS_VTABLE_PROPERTY_CONST),
3352         SD_BUS_PROPERTY("HandleRebootKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_reboot_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3353         SD_BUS_PROPERTY("HandleSuspendKey", "s", property_get_handle_action, offsetof(Manager, handle_suspend_key), SD_BUS_VTABLE_PROPERTY_CONST),
3354         SD_BUS_PROPERTY("HandleSuspendKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_suspend_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3355         SD_BUS_PROPERTY("HandleHibernateKey", "s", property_get_handle_action, offsetof(Manager, handle_hibernate_key), SD_BUS_VTABLE_PROPERTY_CONST),
3356         SD_BUS_PROPERTY("HandleHibernateKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_hibernate_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3357         SD_BUS_PROPERTY("HandleLidSwitch", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch), SD_BUS_VTABLE_PROPERTY_CONST),
3358         SD_BUS_PROPERTY("HandleLidSwitchExternalPower", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch_ep), SD_BUS_VTABLE_PROPERTY_CONST),
3359         SD_BUS_PROPERTY("HandleLidSwitchDocked", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch_docked), SD_BUS_VTABLE_PROPERTY_CONST),
3360         SD_BUS_PROPERTY("HoldoffTimeoutUSec", "t", NULL, offsetof(Manager, holdoff_timeout_usec), SD_BUS_VTABLE_PROPERTY_CONST),
3361         SD_BUS_PROPERTY("IdleAction", "s", property_get_handle_action, offsetof(Manager, idle_action), SD_BUS_VTABLE_PROPERTY_CONST),
3362         SD_BUS_PROPERTY("IdleActionUSec", "t", NULL, offsetof(Manager, idle_action_usec), SD_BUS_VTABLE_PROPERTY_CONST),
3363         SD_BUS_PROPERTY("PreparingForShutdown", "b", property_get_preparing, 0, 0),
3364         SD_BUS_PROPERTY("PreparingForSleep", "b", property_get_preparing, 0, 0),
3365         SD_BUS_PROPERTY("ScheduledShutdown", "(st)", property_get_scheduled_shutdown, 0, 0),
3366         SD_BUS_PROPERTY("Docked", "b", property_get_docked, 0, 0),
3367         SD_BUS_PROPERTY("LidClosed", "b", property_get_lid_closed, 0, 0),
3368         SD_BUS_PROPERTY("OnExternalPower", "b", property_get_on_external_power, 0, 0),
3369         SD_BUS_PROPERTY("RemoveIPC", "b", bus_property_get_bool, offsetof(Manager, remove_ipc), SD_BUS_VTABLE_PROPERTY_CONST),
3370         SD_BUS_PROPERTY("RuntimeDirectorySize", "t", NULL, offsetof(Manager, runtime_dir_size), SD_BUS_VTABLE_PROPERTY_CONST),
3371         SD_BUS_PROPERTY("RuntimeDirectoryInodesMax", "t", NULL, offsetof(Manager, runtime_dir_inodes), SD_BUS_VTABLE_PROPERTY_CONST),
3372         SD_BUS_PROPERTY("InhibitorsMax", "t", NULL, offsetof(Manager, inhibitors_max), SD_BUS_VTABLE_PROPERTY_CONST),
3373         SD_BUS_PROPERTY("NCurrentInhibitors", "t", property_get_hashmap_size, offsetof(Manager, inhibitors), 0),
3374         SD_BUS_PROPERTY("SessionsMax", "t", NULL, offsetof(Manager, sessions_max), SD_BUS_VTABLE_PROPERTY_CONST),
3375         SD_BUS_PROPERTY("NCurrentSessions", "t", property_get_hashmap_size, offsetof(Manager, sessions), 0),
3376         SD_BUS_PROPERTY("UserTasksMax", "t", property_get_compat_user_tasks_max, 0, SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
3377         SD_BUS_PROPERTY("StopIdleSessionUSec", "t", NULL, offsetof(Manager, stop_idle_session_usec), SD_BUS_VTABLE_PROPERTY_CONST),
3378
3379         SD_BUS_METHOD_WITH_ARGS("GetSession",
3380                                 SD_BUS_ARGS("s", session_id),
3381                                 SD_BUS_RESULT("o", object_path),
3382                                 method_get_session,
3383                                 SD_BUS_VTABLE_UNPRIVILEGED),
3384         SD_BUS_METHOD_WITH_ARGS("GetSessionByPID",
3385                                 SD_BUS_ARGS("u", pid),
3386                                 SD_BUS_RESULT("o", object_path),
3387                                 method_get_session_by_pid,
3388                                 SD_BUS_VTABLE_UNPRIVILEGED),
3389         SD_BUS_METHOD_WITH_ARGS("GetUser",
3390                                 SD_BUS_ARGS("u", uid),
3391                                 SD_BUS_RESULT("o", object_path),
3392                                 method_get_user,
3393                                 SD_BUS_VTABLE_UNPRIVILEGED),
3394         SD_BUS_METHOD_WITH_ARGS("GetUserByPID",
3395                                 SD_BUS_ARGS("u", pid),
3396                                 SD_BUS_RESULT("o", object_path),
3397                                 method_get_user_by_pid,
3398                                 SD_BUS_VTABLE_UNPRIVILEGED),
3399         SD_BUS_METHOD_WITH_ARGS("GetSeat",
3400                                 SD_BUS_ARGS("s", seat_id),
3401                                 SD_BUS_RESULT("o", object_path),
3402                                 method_get_seat,
3403                                 SD_BUS_VTABLE_UNPRIVILEGED),
3404         SD_BUS_METHOD_WITH_ARGS("ListSessions",
3405                                 SD_BUS_NO_ARGS,
3406                                 SD_BUS_RESULT("a(susso)", sessions),
3407                                 method_list_sessions,
3408                                 SD_BUS_VTABLE_UNPRIVILEGED),
3409         SD_BUS_METHOD_WITH_ARGS("ListUsers",
3410                                 SD_BUS_NO_ARGS,
3411                                 SD_BUS_RESULT("a(uso)", users),
3412                                 method_list_users,
3413                                 SD_BUS_VTABLE_UNPRIVILEGED),
3414         SD_BUS_METHOD_WITH_ARGS("ListSeats",
3415                                 SD_BUS_NO_ARGS,
3416                                 SD_BUS_RESULT("a(so)", seats),
3417                                 method_list_seats,
3418                                 SD_BUS_VTABLE_UNPRIVILEGED),
3419         SD_BUS_METHOD_WITH_ARGS("ListInhibitors",
3420                                 SD_BUS_NO_ARGS,
3421                                 SD_BUS_RESULT("a(ssssuu)", inhibitors),
3422                                 method_list_inhibitors,
3423                                 SD_BUS_VTABLE_UNPRIVILEGED),
3424         SD_BUS_METHOD_WITH_ARGS("CreateSession",
3425                                 SD_BUS_ARGS("u", uid,
3426                                             "u", pid,
3427                                             "s", service,
3428                                             "s", type,
3429                                             "s", class,
3430                                             "s", desktop,
3431                                             "s", seat_id,
3432                                             "u", vtnr,
3433                                             "s", tty,
3434                                             "s", display,
3435                                             "b", remote,
3436                                             "s", remote_user,
3437                                             "s", remote_host,
3438                                             "a(sv)", properties),
3439                                 SD_BUS_RESULT("s", session_id,
3440                                               "o", object_path,
3441                                               "s", runtime_path,
3442                                               "h", fifo_fd,
3443                                               "u", uid,
3444                                               "s", seat_id,
3445                                               "u", vtnr,
3446                                               "b", existing),
3447                                 method_create_session,
3448                                 0),
3449         SD_BUS_METHOD_WITH_ARGS("ReleaseSession",
3450                                 SD_BUS_ARGS("s", session_id),
3451                                 SD_BUS_NO_RESULT,
3452                                 method_release_session,
3453                                 0),
3454         SD_BUS_METHOD_WITH_ARGS("ActivateSession",
3455                                 SD_BUS_ARGS("s", session_id),
3456                                 SD_BUS_NO_RESULT,
3457                                 method_activate_session,
3458                                 SD_BUS_VTABLE_UNPRIVILEGED),
3459         SD_BUS_METHOD_WITH_ARGS("ActivateSessionOnSeat",
3460                                 SD_BUS_ARGS("s", session_id, "s", seat_id),
3461                                 SD_BUS_NO_RESULT,
3462                                 method_activate_session_on_seat,
3463                                 SD_BUS_VTABLE_UNPRIVILEGED),
3464         SD_BUS_METHOD_WITH_ARGS("LockSession",
3465                                 SD_BUS_ARGS("s", session_id),
3466                                 SD_BUS_NO_RESULT,
3467                                 method_lock_session,
3468                                 SD_BUS_VTABLE_UNPRIVILEGED),
3469         SD_BUS_METHOD_WITH_ARGS("UnlockSession",
3470                                 SD_BUS_ARGS("s", session_id),
3471                                 SD_BUS_NO_RESULT,
3472                                 method_lock_session,
3473                                 SD_BUS_VTABLE_UNPRIVILEGED),
3474         SD_BUS_METHOD("LockSessions",
3475                       NULL,
3476                       NULL,
3477                       method_lock_sessions,
3478                       SD_BUS_VTABLE_UNPRIVILEGED),
3479         SD_BUS_METHOD("UnlockSessions",
3480                       NULL,
3481                       NULL,
3482                       method_lock_sessions,
3483                       SD_BUS_VTABLE_UNPRIVILEGED),
3484         SD_BUS_METHOD_WITH_ARGS("KillSession",
3485                                 SD_BUS_ARGS("s", session_id, "s", who, "i", signal_number),
3486                                 SD_BUS_NO_RESULT,
3487                                 method_kill_session,
3488                                 SD_BUS_VTABLE_UNPRIVILEGED),
3489         SD_BUS_METHOD_WITH_ARGS("KillUser",
3490                                 SD_BUS_ARGS("u", uid, "i", signal_number),
3491                                 SD_BUS_NO_RESULT,
3492                                 method_kill_user,
3493                                 SD_BUS_VTABLE_UNPRIVILEGED),
3494         SD_BUS_METHOD_WITH_ARGS("TerminateSession",
3495                                 SD_BUS_ARGS("s", session_id),
3496                                 SD_BUS_NO_RESULT,
3497                                 method_terminate_session,
3498                                 SD_BUS_VTABLE_UNPRIVILEGED),
3499         SD_BUS_METHOD_WITH_ARGS("TerminateUser",
3500                                 SD_BUS_ARGS("u", uid),
3501                                 SD_BUS_NO_RESULT,
3502                                 method_terminate_user,
3503                                 SD_BUS_VTABLE_UNPRIVILEGED),
3504         SD_BUS_METHOD_WITH_ARGS("TerminateSeat",
3505                                 SD_BUS_ARGS("s", seat_id),
3506                                 SD_BUS_NO_RESULT,
3507                                 method_terminate_seat,
3508                                 SD_BUS_VTABLE_UNPRIVILEGED),
3509         SD_BUS_METHOD_WITH_ARGS("SetUserLinger",
3510                                 SD_BUS_ARGS("u", uid, "b", enable, "b", interactive),
3511                                 SD_BUS_NO_RESULT,
3512                                 method_set_user_linger,
3513                                 SD_BUS_VTABLE_UNPRIVILEGED),
3514         SD_BUS_METHOD_WITH_ARGS("AttachDevice",
3515                                 SD_BUS_ARGS("s", seat_id, "s", sysfs_path, "b", interactive),
3516                                 SD_BUS_NO_RESULT,
3517                                 method_attach_device,
3518                                 SD_BUS_VTABLE_UNPRIVILEGED),
3519         SD_BUS_METHOD_WITH_ARGS("FlushDevices",
3520                                 SD_BUS_ARGS("b", interactive),
3521                                 SD_BUS_NO_RESULT,
3522                                 method_flush_devices,
3523                                 SD_BUS_VTABLE_UNPRIVILEGED),
3524         SD_BUS_METHOD_WITH_ARGS("PowerOff",
3525                                 SD_BUS_ARGS("b", interactive),
3526                                 SD_BUS_NO_RESULT,
3527                                 method_poweroff,
3528                                 SD_BUS_VTABLE_UNPRIVILEGED),
3529         SD_BUS_METHOD_WITH_ARGS("PowerOffWithFlags",
3530                                 SD_BUS_ARGS("t", flags),
3531                                 SD_BUS_NO_RESULT,
3532                                 method_poweroff,
3533                                 SD_BUS_VTABLE_UNPRIVILEGED),
3534         SD_BUS_METHOD_WITH_ARGS("Reboot",
3535                                 SD_BUS_ARGS("b", interactive),
3536                                 SD_BUS_NO_RESULT,
3537                                 method_reboot,
3538                                 SD_BUS_VTABLE_UNPRIVILEGED),
3539         SD_BUS_METHOD_WITH_ARGS("RebootWithFlags",
3540                                 SD_BUS_ARGS("t", flags),
3541                                 SD_BUS_NO_RESULT,
3542                                 method_reboot,
3543                                 SD_BUS_VTABLE_UNPRIVILEGED),
3544         SD_BUS_METHOD_WITH_ARGS("Halt",
3545                                 SD_BUS_ARGS("b", interactive),
3546                                 SD_BUS_NO_RESULT,
3547                                 method_halt,
3548                                 SD_BUS_VTABLE_UNPRIVILEGED),
3549         SD_BUS_METHOD_WITH_ARGS("HaltWithFlags",
3550                                 SD_BUS_ARGS("t", flags),
3551                                 SD_BUS_NO_RESULT,
3552                                 method_halt,
3553                                 SD_BUS_VTABLE_UNPRIVILEGED),
3554         SD_BUS_METHOD_WITH_ARGS("Suspend",
3555                                 SD_BUS_ARGS("b", interactive),
3556                                 SD_BUS_NO_RESULT,
3557                                 method_suspend,
3558                                 SD_BUS_VTABLE_UNPRIVILEGED),
3559         SD_BUS_METHOD_WITH_ARGS("SuspendWithFlags",
3560                                 SD_BUS_ARGS("t", flags),
3561                                 SD_BUS_NO_RESULT,
3562                                 method_suspend,
3563                                 SD_BUS_VTABLE_UNPRIVILEGED),
3564         SD_BUS_METHOD_WITH_ARGS("Hibernate",
3565                                 SD_BUS_ARGS("b", interactive),
3566                                 SD_BUS_NO_RESULT,
3567                                 method_hibernate,
3568                                 SD_BUS_VTABLE_UNPRIVILEGED),
3569         SD_BUS_METHOD_WITH_ARGS("HibernateWithFlags",
3570                                 SD_BUS_ARGS("t", flags),
3571                                 SD_BUS_NO_RESULT,
3572                                 method_hibernate,
3573                                 SD_BUS_VTABLE_UNPRIVILEGED),
3574         SD_BUS_METHOD_WITH_ARGS("HybridSleep",
3575                                 SD_BUS_ARGS("b", interactive),
3576                                 SD_BUS_NO_RESULT,
3577                                 method_hybrid_sleep,
3578                                 SD_BUS_VTABLE_UNPRIVILEGED),
3579         SD_BUS_METHOD_WITH_ARGS("HybridSleepWithFlags",
3580                                 SD_BUS_ARGS("t", flags),
3581                                 SD_BUS_NO_RESULT,
3582                                 method_hybrid_sleep,
3583                                 SD_BUS_VTABLE_UNPRIVILEGED),
3584         SD_BUS_METHOD_WITH_ARGS("SuspendThenHibernate",
3585                                 SD_BUS_ARGS("b", interactive),
3586                                 SD_BUS_NO_RESULT,
3587                                 method_suspend_then_hibernate,
3588                                 SD_BUS_VTABLE_UNPRIVILEGED),
3589         SD_BUS_METHOD_WITH_ARGS("SuspendThenHibernateWithFlags",
3590                                 SD_BUS_ARGS("t", flags),
3591                                 SD_BUS_NO_RESULT,
3592                                 method_suspend_then_hibernate,
3593                                 SD_BUS_VTABLE_UNPRIVILEGED),
3594         SD_BUS_METHOD_WITH_ARGS("CanPowerOff",
3595                                 SD_BUS_NO_ARGS,
3596                                 SD_BUS_RESULT("s", result),
3597                                 method_can_poweroff,
3598                                 SD_BUS_VTABLE_UNPRIVILEGED),
3599         SD_BUS_METHOD_WITH_ARGS("CanReboot",
3600                                 SD_BUS_NO_ARGS,
3601                                 SD_BUS_RESULT("s", result),
3602                                 method_can_reboot,
3603                                 SD_BUS_VTABLE_UNPRIVILEGED),
3604         SD_BUS_METHOD_WITH_ARGS("CanHalt",
3605                                 SD_BUS_NO_ARGS,
3606                                 SD_BUS_RESULT("s", result),
3607                                 method_can_halt,
3608                                 SD_BUS_VTABLE_UNPRIVILEGED),
3609         SD_BUS_METHOD_WITH_ARGS("CanSuspend",
3610                                 SD_BUS_NO_ARGS,
3611                                 SD_BUS_RESULT("s", result),
3612                                 method_can_suspend,
3613                                 SD_BUS_VTABLE_UNPRIVILEGED),
3614         SD_BUS_METHOD_WITH_ARGS("CanHibernate",
3615                                 SD_BUS_NO_ARGS,
3616                                 SD_BUS_RESULT("s", result),
3617                                 method_can_hibernate,
3618                                 SD_BUS_VTABLE_UNPRIVILEGED),
3619         SD_BUS_METHOD_WITH_ARGS("CanHybridSleep",
3620                                 SD_BUS_NO_ARGS,
3621                                 SD_BUS_RESULT("s", result),
3622                                 method_can_hybrid_sleep,
3623                                 SD_BUS_VTABLE_UNPRIVILEGED),
3624         SD_BUS_METHOD_WITH_ARGS("CanSuspendThenHibernate",
3625                                 SD_BUS_NO_ARGS,
3626                                 SD_BUS_RESULT("s", result),
3627                                 method_can_suspend_then_hibernate,
3628                                 SD_BUS_VTABLE_UNPRIVILEGED),
3629         SD_BUS_METHOD_WITH_ARGS("ScheduleShutdown",
3630                                 SD_BUS_ARGS("s", type, "t", usec),
3631                                 SD_BUS_NO_RESULT,
3632                                 method_schedule_shutdown,
3633                                 SD_BUS_VTABLE_UNPRIVILEGED),
3634         SD_BUS_METHOD_WITH_ARGS("CancelScheduledShutdown",
3635                                 SD_BUS_NO_ARGS,
3636                                 SD_BUS_RESULT("b", cancelled),
3637                                 method_cancel_scheduled_shutdown,
3638                                 SD_BUS_VTABLE_UNPRIVILEGED),
3639         SD_BUS_METHOD_WITH_ARGS("Inhibit",
3640                                 SD_BUS_ARGS("s", what, "s", who, "s", why, "s", mode),
3641                                 SD_BUS_RESULT("h", pipe_fd),
3642                                 method_inhibit,
3643                                 SD_BUS_VTABLE_UNPRIVILEGED),
3644         SD_BUS_METHOD_WITH_ARGS("CanRebootParameter",
3645                                 SD_BUS_NO_ARGS,
3646                                 SD_BUS_RESULT("s", result),
3647                                 method_can_reboot_parameter,
3648                                 SD_BUS_VTABLE_UNPRIVILEGED),
3649         SD_BUS_METHOD_WITH_ARGS("SetRebootParameter",
3650                                 SD_BUS_ARGS("s", parameter),
3651                                 SD_BUS_NO_RESULT,
3652                                 method_set_reboot_parameter,
3653                                 SD_BUS_VTABLE_UNPRIVILEGED),
3654         SD_BUS_METHOD_WITH_ARGS("CanRebootToFirmwareSetup",
3655                                 SD_BUS_NO_ARGS,
3656                                 SD_BUS_RESULT("s", result),
3657                                 method_can_reboot_to_firmware_setup,
3658                                 SD_BUS_VTABLE_UNPRIVILEGED),
3659         SD_BUS_METHOD_WITH_ARGS("SetRebootToFirmwareSetup",
3660                                 SD_BUS_ARGS("b", enable),
3661                                 SD_BUS_NO_RESULT,
3662                                 method_set_reboot_to_firmware_setup,
3663                                 SD_BUS_VTABLE_UNPRIVILEGED),
3664         SD_BUS_METHOD_WITH_ARGS("CanRebootToBootLoaderMenu",
3665                                 SD_BUS_NO_ARGS,
3666                                 SD_BUS_RESULT("s", result),
3667                                 method_can_reboot_to_boot_loader_menu,
3668                                 SD_BUS_VTABLE_UNPRIVILEGED),
3669         SD_BUS_METHOD_WITH_ARGS("SetRebootToBootLoaderMenu",
3670                                 SD_BUS_ARGS("t", timeout),
3671                                 SD_BUS_NO_RESULT,
3672                                 method_set_reboot_to_boot_loader_menu,
3673                                 SD_BUS_VTABLE_UNPRIVILEGED),
3674         SD_BUS_METHOD_WITH_ARGS("CanRebootToBootLoaderEntry",
3675                                 SD_BUS_NO_ARGS,
3676                                 SD_BUS_RESULT("s", result),
3677                                 method_can_reboot_to_boot_loader_entry,
3678                                 SD_BUS_VTABLE_UNPRIVILEGED),
3679         SD_BUS_METHOD_WITH_ARGS("SetRebootToBootLoaderEntry",
3680                                 SD_BUS_ARGS("s", boot_loader_entry),
3681                                 SD_BUS_NO_RESULT,
3682                                 method_set_reboot_to_boot_loader_entry,
3683                                 SD_BUS_VTABLE_UNPRIVILEGED),
3684         SD_BUS_METHOD_WITH_ARGS("SetWallMessage",
3685                                 SD_BUS_ARGS("s", wall_message, "b", enable),
3686                                 SD_BUS_NO_RESULT,
3687                                 method_set_wall_message,
3688                                 SD_BUS_VTABLE_UNPRIVILEGED),
3689
3690         SD_BUS_SIGNAL_WITH_ARGS("SessionNew",
3691                                 SD_BUS_ARGS("s", session_id, "o", object_path),
3692                                 0),
3693         SD_BUS_SIGNAL_WITH_ARGS("SessionRemoved",
3694                                 SD_BUS_ARGS("s", session_id, "o", object_path),
3695                                 0),
3696         SD_BUS_SIGNAL_WITH_ARGS("UserNew",
3697                                 SD_BUS_ARGS("u", uid, "o", object_path),
3698                                 0),
3699         SD_BUS_SIGNAL_WITH_ARGS("UserRemoved",
3700                                 SD_BUS_ARGS("u", uid, "o", object_path),
3701                                 0),
3702         SD_BUS_SIGNAL_WITH_ARGS("SeatNew",
3703                                 SD_BUS_ARGS("s", seat_id, "o", object_path),
3704                                 0),
3705         SD_BUS_SIGNAL_WITH_ARGS("SeatRemoved",
3706                                 SD_BUS_ARGS("s", seat_id, "o", object_path),
3707                                 0),
3708         SD_BUS_SIGNAL_WITH_ARGS("PrepareForShutdown",
3709                                 SD_BUS_ARGS("b", start),
3710                                 0),
3711         SD_BUS_SIGNAL_WITH_ARGS("PrepareForSleep",
3712                                 SD_BUS_ARGS("b", start),
3713                                 0),
3714
3715         SD_BUS_VTABLE_END
3716 };
3717
3718 const BusObjectImplementation manager_object = {
3719         "/org/freedesktop/login1",
3720         "org.freedesktop.login1.Manager",
3721         .vtables = BUS_VTABLES(manager_vtable),
3722         .children = BUS_IMPLEMENTATIONS(&seat_object,
3723                                         &session_object,
3724                                         &user_object),
3725 };
3726
3727 static int session_jobs_reply(Session *s, uint32_t jid, const char *unit, const char *result) {
3728         assert(s);
3729         assert(unit);
3730
3731         if (!s->started)
3732                 return 0;
3733
3734         if (result && !streq(result, "done")) {
3735                 _cleanup_(sd_bus_error_free) sd_bus_error e = SD_BUS_ERROR_NULL;
3736
3737                 sd_bus_error_setf(&e, BUS_ERROR_JOB_FAILED,
3738                                   "Job %u for unit '%s' failed with '%s'", jid, unit, result);
3739                 return session_send_create_reply(s, &e);
3740         }
3741
3742         return session_send_create_reply(s, NULL);
3743 }
3744
3745 int match_job_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3746         const char *path, *result, *unit;
3747         Manager *m = ASSERT_PTR(userdata);
3748         Session *session;
3749         uint32_t id;
3750         User *user;
3751         int r;
3752
3753         assert(message);
3754
3755         r = sd_bus_message_read(message, "uoss", &id, &path, &unit, &result);
3756         if (r < 0) {
3757                 bus_log_parse_error(r);
3758                 return 0;
3759         }
3760
3761         if (m->action_job && streq(m->action_job, path)) {
3762                 assert(m->delayed_action);
3763                 log_info("Operation '%s' finished.", inhibit_what_to_string(m->delayed_action->inhibit_what));
3764
3765                 /* Tell people that they now may take a lock again */
3766                 (void) send_prepare_for(m, m->delayed_action->inhibit_what, false);
3767
3768                 m->action_job = mfree(m->action_job);
3769                 m->delayed_action = NULL;
3770                 return 0;
3771         }
3772
3773         session = hashmap_get(m->session_units, unit);
3774         if (session) {
3775                 if (streq_ptr(path, session->scope_job)) {
3776                         session->scope_job = mfree(session->scope_job);
3777                         (void) session_jobs_reply(session, id, unit, result);
3778
3779                         session_save(session);
3780                         user_save(session->user);
3781                 }
3782
3783                 session_add_to_gc_queue(session);
3784         }
3785
3786         user = hashmap_get(m->user_units, unit);
3787         if (user) {
3788                 if (streq_ptr(path, user->service_job)) {
3789                         user->service_job = mfree(user->service_job);
3790
3791                         LIST_FOREACH(sessions_by_user, s, user->sessions)
3792                                 (void) session_jobs_reply(s, id, unit, NULL /* don't propagate user service failures to the client */);
3793
3794                         user_save(user);
3795                 }
3796
3797                 user_add_to_gc_queue(user);
3798         }
3799
3800         return 0;
3801 }
3802
3803 int match_unit_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3804         const char *path, *unit;
3805         Manager *m = ASSERT_PTR(userdata);
3806         Session *session;
3807         User *user;
3808         int r;
3809
3810         assert(message);
3811
3812         r = sd_bus_message_read(message, "so", &unit, &path);
3813         if (r < 0) {
3814                 bus_log_parse_error(r);
3815                 return 0;
3816         }
3817
3818         session = hashmap_get(m->session_units, unit);
3819         if (session)
3820                 session_add_to_gc_queue(session);
3821
3822         user = hashmap_get(m->user_units, unit);
3823         if (user)
3824                 user_add_to_gc_queue(user);
3825
3826         return 0;
3827 }
3828
3829 int match_properties_changed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3830         _cleanup_free_ char *unit = NULL;
3831         Manager *m = ASSERT_PTR(userdata);
3832         const char *path;
3833         Session *session;
3834         User *user;
3835         int r;
3836
3837         assert(message);
3838
3839         path = sd_bus_message_get_path(message);
3840         if (!path)
3841                 return 0;
3842
3843         r = unit_name_from_dbus_path(path, &unit);
3844         if (r == -EINVAL) /* not a unit */
3845                 return 0;
3846         if (r < 0) {
3847                 log_oom();
3848                 return 0;
3849         }
3850
3851         session = hashmap_get(m->session_units, unit);
3852         if (session)
3853                 session_add_to_gc_queue(session);
3854
3855         user = hashmap_get(m->user_units, unit);
3856         if (user)
3857                 user_add_to_gc_queue(user);
3858
3859         return 0;
3860 }
3861
3862 int match_reloading(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3863         Manager *m = ASSERT_PTR(userdata);
3864         Session *session;
3865         int b, r;
3866
3867         assert(message);
3868
3869         r = sd_bus_message_read(message, "b", &b);
3870         if (r < 0) {
3871                 bus_log_parse_error(r);
3872                 return 0;
3873         }
3874
3875         if (b)
3876                 return 0;
3877
3878         /* systemd finished reloading, let's recheck all our sessions */
3879         log_debug("System manager has been reloaded, rechecking sessions...");
3880
3881         HASHMAP_FOREACH(session, m->sessions)
3882                 session_add_to_gc_queue(session);
3883
3884         return 0;
3885 }
3886
3887 int manager_send_changed(Manager *manager, const char *property, ...) {
3888         char **l;
3889
3890         assert(manager);
3891
3892         l = strv_from_stdarg_alloca(property);
3893
3894         return sd_bus_emit_properties_changed_strv(
3895                         manager->bus,
3896                         "/org/freedesktop/login1",
3897                         "org.freedesktop.login1.Manager",
3898                         l);
3899 }
3900
3901 static int strdup_job(sd_bus_message *reply, char **job) {
3902         const char *j;
3903         char *copy;
3904         int r;
3905
3906         r = sd_bus_message_read(reply, "o", &j);
3907         if (r < 0)
3908                 return r;
3909
3910         copy = strdup(j);
3911         if (!copy)
3912                 return -ENOMEM;
3913
3914         *job = copy;
3915         return 1;
3916 }
3917
3918 int manager_start_scope(
3919                 Manager *manager,
3920                 const char *scope,
3921                 pid_t pid,
3922                 const char *slice,
3923                 const char *description,
3924                 char **wants,
3925                 char **after,
3926                 const char *requires_mounts_for,
3927                 sd_bus_message *more_properties,
3928                 sd_bus_error *error,
3929                 char **job) {
3930
3931         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
3932         int r;
3933
3934         assert(manager);
3935         assert(scope);
3936         assert(pid > 1);
3937         assert(job);
3938
3939         r = bus_message_new_method_call(manager->bus, &m, bus_systemd_mgr, "StartTransientUnit");
3940         if (r < 0)
3941                 return r;
3942
3943         r = sd_bus_message_append(m, "ss", strempty(scope), "fail");
3944         if (r < 0)
3945                 return r;
3946
3947         r = sd_bus_message_open_container(m, 'a', "(sv)");
3948         if (r < 0)
3949                 return r;
3950
3951         if (!isempty(slice)) {
3952                 r = sd_bus_message_append(m, "(sv)", "Slice", "s", slice);
3953                 if (r < 0)
3954                         return r;
3955         }
3956
3957         if (!isempty(description)) {
3958                 r = sd_bus_message_append(m, "(sv)", "Description", "s", description);
3959                 if (r < 0)
3960                         return r;
3961         }
3962
3963         STRV_FOREACH(i, wants) {
3964                 r = sd_bus_message_append(m, "(sv)", "Wants", "as", 1, *i);
3965                 if (r < 0)
3966                         return r;
3967         }
3968
3969         STRV_FOREACH(i, after) {
3970                 r = sd_bus_message_append(m, "(sv)", "After", "as", 1, *i);
3971                 if (r < 0)
3972                         return r;
3973         }
3974
3975         if (!empty_or_root(requires_mounts_for)) {
3976                 r = sd_bus_message_append(m, "(sv)", "RequiresMountsFor", "as", 1, requires_mounts_for);
3977                 if (r < 0)
3978                         return r;
3979         }
3980
3981         /* Make sure that the session shells are terminated with SIGHUP since bash and friends tend to ignore
3982          * SIGTERM */
3983         r = sd_bus_message_append(m, "(sv)", "SendSIGHUP", "b", true);
3984         if (r < 0)
3985                 return r;
3986
3987         r = sd_bus_message_append(m, "(sv)", "PIDs", "au", 1, pid);
3988         if (r < 0)
3989                 return r;
3990
3991         /* For login session scopes, if a process is OOM killed by the kernel, *don't* terminate the rest of
3992            the scope */
3993         r = sd_bus_message_append(m, "(sv)", "OOMPolicy", "s", "continue");
3994         if (r < 0)
3995                 return r;
3996
3997         /* disable TasksMax= for the session scope, rely on the slice setting for it */
3998         r = sd_bus_message_append(m, "(sv)", "TasksMax", "t", UINT64_MAX);
3999         if (r < 0)
4000                 return bus_log_create_error(r);
4001
4002         if (more_properties) {
4003                 /* If TasksMax also appears here, it will overwrite the default value set above */
4004                 r = sd_bus_message_copy(m, more_properties, true);
4005                 if (r < 0)
4006                         return r;
4007         }
4008
4009         r = sd_bus_message_close_container(m);
4010         if (r < 0)
4011                 return r;
4012
4013         r = sd_bus_message_append(m, "a(sa(sv))", 0);
4014         if (r < 0)
4015                 return r;
4016
4017         r = sd_bus_call(manager->bus, m, 0, error, &reply);
4018         if (r < 0)
4019                 return r;
4020
4021         return strdup_job(reply, job);
4022 }
4023
4024 int manager_start_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) {
4025         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4026         int r;
4027
4028         assert(manager);
4029         assert(unit);
4030         assert(job);
4031
4032         r = bus_call_method(
4033                         manager->bus,
4034                         bus_systemd_mgr,
4035                         "StartUnit",
4036                         error,
4037                         &reply,
4038                         "ss", unit, "replace");
4039         if (r < 0)
4040                 return r;
4041
4042         return strdup_job(reply, job);
4043 }
4044
4045 int manager_stop_unit(Manager *manager, const char *unit, const char *job_mode, sd_bus_error *error, char **ret_job) {
4046         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4047         int r;
4048
4049         assert(manager);
4050         assert(unit);
4051         assert(ret_job);
4052
4053         r = bus_call_method(
4054                         manager->bus,
4055                         bus_systemd_mgr,
4056                         "StopUnit",
4057                         error,
4058                         &reply,
4059                         "ss", unit, job_mode ?: "fail");
4060         if (r < 0) {
4061                 if (sd_bus_error_has_names(error, BUS_ERROR_NO_SUCH_UNIT,
4062                                                   BUS_ERROR_LOAD_FAILED)) {
4063
4064                         *ret_job = NULL;
4065                         sd_bus_error_free(error);
4066                         return 0;
4067                 }
4068
4069                 return r;
4070         }
4071
4072         return strdup_job(reply, ret_job);
4073 }
4074
4075 int manager_abandon_scope(Manager *manager, const char *scope, sd_bus_error *ret_error) {
4076         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4077         _cleanup_free_ char *path = NULL;
4078         int r;
4079
4080         assert(manager);
4081         assert(scope);
4082
4083         path = unit_dbus_path_from_name(scope);
4084         if (!path)
4085                 return -ENOMEM;
4086
4087         r = sd_bus_call_method(
4088                         manager->bus,
4089                         "org.freedesktop.systemd1",
4090                         path,
4091                         "org.freedesktop.systemd1.Scope",
4092                         "Abandon",
4093                         &error,
4094                         NULL,
4095                         NULL);
4096         if (r < 0) {
4097                 if (sd_bus_error_has_names(&error, BUS_ERROR_NO_SUCH_UNIT,
4098                                                    BUS_ERROR_LOAD_FAILED,
4099                                                    BUS_ERROR_SCOPE_NOT_RUNNING))
4100                         return 0;
4101
4102                 sd_bus_error_move(ret_error, &error);
4103                 return r;
4104         }
4105
4106         return 1;
4107 }
4108
4109 int manager_kill_unit(Manager *manager, const char *unit, KillWho who, int signo, sd_bus_error *error) {
4110         assert(manager);
4111         assert(unit);
4112
4113         return bus_call_method(
4114                         manager->bus,
4115                         bus_systemd_mgr,
4116                         "KillUnit",
4117                         error,
4118                         NULL,
4119                         "ssi", unit, who == KILL_LEADER ? "main" : "all", signo);
4120 }
4121
4122 int manager_unit_is_active(Manager *manager, const char *unit, sd_bus_error *ret_error) {
4123         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4124         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4125         _cleanup_free_ char *path = NULL;
4126         const char *state;
4127         int r;
4128
4129         assert(manager);
4130         assert(unit);
4131
4132         path = unit_dbus_path_from_name(unit);
4133         if (!path)
4134                 return -ENOMEM;
4135
4136         r = sd_bus_get_property(
4137                         manager->bus,
4138                         "org.freedesktop.systemd1",
4139                         path,
4140                         "org.freedesktop.systemd1.Unit",
4141                         "ActiveState",
4142                         &error,
4143                         &reply,
4144                         "s");
4145         if (r < 0) {
4146                 /* systemd might have dropped off momentarily, let's
4147                  * not make this an error */
4148                 if (sd_bus_error_has_names(&error, SD_BUS_ERROR_NO_REPLY,
4149                                                    SD_BUS_ERROR_DISCONNECTED))
4150                         return true;
4151
4152                 /* If the unit is already unloaded then it's not
4153                  * active */
4154                 if (sd_bus_error_has_names(&error, BUS_ERROR_NO_SUCH_UNIT,
4155                                                    BUS_ERROR_LOAD_FAILED))
4156                         return false;
4157
4158                 sd_bus_error_move(ret_error, &error);
4159                 return r;
4160         }
4161
4162         r = sd_bus_message_read(reply, "s", &state);
4163         if (r < 0)
4164                 return r;
4165
4166         return !STR_IN_SET(state, "inactive", "failed");
4167 }
4168
4169 int manager_job_is_active(Manager *manager, const char *path, sd_bus_error *ret_error) {
4170         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4171         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4172         int r;
4173
4174         assert(manager);
4175         assert(path);
4176
4177         r = sd_bus_get_property(
4178                         manager->bus,
4179                         "org.freedesktop.systemd1",
4180                         path,
4181                         "org.freedesktop.systemd1.Job",
4182                         "State",
4183                         &error,
4184                         &reply,
4185                         "s");
4186         if (r < 0) {
4187                 if (sd_bus_error_has_names(&error, SD_BUS_ERROR_NO_REPLY,
4188                                                    SD_BUS_ERROR_DISCONNECTED))
4189                         return true;
4190
4191                 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_OBJECT))
4192                         return false;
4193
4194                 sd_bus_error_move(ret_error, &error);
4195                 return r;
4196         }
4197
4198         /* We don't actually care about the state really. The fact
4199          * that we could read the job state is enough for us */
4200
4201         return true;
4202 }