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-config.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
  61 /* As a random fun fact sysvinit had a 252 (256-(strlen(" \r\n")+1))
  62  * character limit for the wall message.
  63  * https://git.savannah.nongnu.org/cgit/sysvinit.git/tree/src/shutdown.c#n72
  64  * There is no real technical need for that but doesn't make sense
  65  * to store arbitrary amounts either. As we are not stingy here, we
  66  * allow 4k.
  67  */
  68 #define WALL_MESSAGE_MAX 4096U
  69
  70 #define SHUTDOWN_SCHEDULE_FILE "/run/systemd/shutdown/scheduled"
  71
  72 static int update_schedule_file(Manager *m);
  73 static void reset_scheduled_shutdown(Manager *m);
  74 static int manager_setup_shutdown_timers(Manager* m);
  75
  76 static int get_sender_session(
  77                 Manager *m,
  78                 sd_bus_message *message,
  79                 bool consult_display,
  80                 sd_bus_error *error,
  81                 Session **ret) {
  82
  83         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
  84         Session *session = NULL;
  85         const char *name;
  86         int r;
  87
  88         /* Acquire the sender's session. This first checks if the sending process is inside a session itself,
  89          * and returns that. If not and 'consult_display' is true, this returns the display session of the
  90          * owning user of the caller. */
  91
  92         r = sd_bus_query_sender_creds(message,
  93                                       SD_BUS_CREDS_SESSION|SD_BUS_CREDS_AUGMENT|
  94                                       (consult_display ? SD_BUS_CREDS_OWNER_UID : 0), &creds);
  95         if (r < 0)
  96                 return r;
  97
  98         r = sd_bus_creds_get_session(creds, &name);
  99         if (r < 0) {
 100                 if (r != -ENXIO)
 101                         return r;
 102
 103                 if (consult_display) {
 104                         uid_t uid;
 105
 106                         r = sd_bus_creds_get_owner_uid(creds, &uid);
 107                         if (r < 0) {
 108                                 if (r != -ENXIO)
 109                                         return r;
 110                         } else {
 111                                 User *user;
 112
 113                                 user = hashmap_get(m->users, UID_TO_PTR(uid));
 114                                 if (user)
 115                                         session = user->display;
 116                         }
 117                 }
 118         } else
 119                 session = hashmap_get(m->sessions, name);
 120
 121         if (!session)
 122                 return sd_bus_error_setf(error, BUS_ERROR_NO_SESSION_FOR_PID,
 123                                          consult_display ?
 124                                          "Caller does not belong to any known session and doesn't own any suitable session." :
 125                                          "Caller does not belong to any known session.");
 126
 127         *ret = session;
 128         return 0;
 129 }
 130
 131 int manager_get_session_from_creds(
 132                 Manager *m,
 133                 sd_bus_message *message,
 134                 const char *name,
 135                 sd_bus_error *error,
 136                 Session **ret) {
 137
 138         Session *session;
 139
 140         assert(m);
 141         assert(ret);
 142
 143         if (SEAT_IS_SELF(name)) /* the caller's own session */
 144                 return get_sender_session(m, message, false, error, ret);
 145         if (SEAT_IS_AUTO(name)) /* The caller's own session if they have one, otherwise their user's display session */
 146                 return get_sender_session(m, message, true, error, ret);
 147
 148         session = hashmap_get(m->sessions, name);
 149         if (!session)
 150                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SESSION, "No session '%s' known", name);
 151
 152         *ret = session;
 153         return 0;
 154 }
 155
 156 static int get_sender_user(Manager *m, sd_bus_message *message, sd_bus_error *error, User **ret) {
 157         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 158         uid_t uid;
 159         User *user;
 160         int r;
 161
 162         /* Note that we get the owner UID of the session, not the actual client UID here! */
 163         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds);
 164         if (r < 0)
 165                 return r;
 166
 167         r = sd_bus_creds_get_owner_uid(creds, &uid);
 168         if (r < 0) {
 169                 if (r != -ENXIO)
 170                         return r;
 171
 172                 user = NULL;
 173         } else
 174                 user = hashmap_get(m->users, UID_TO_PTR(uid));
 175
 176         if (!user)
 177                 return sd_bus_error_setf(error, BUS_ERROR_NO_USER_FOR_PID,
 178                                          "Caller does not belong to any logged in or lingering user");
 179
 180         *ret = user;
 181         return 0;
 182 }
 183
 184 int manager_get_user_from_creds(Manager *m, sd_bus_message *message, uid_t uid, sd_bus_error *error, User **ret) {
 185         User *user;
 186
 187         assert(m);
 188         assert(ret);
 189
 190         if (!uid_is_valid(uid))
 191                 return get_sender_user(m, message, error, ret);
 192
 193         user = hashmap_get(m->users, UID_TO_PTR(uid));
 194         if (!user)
 195                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_USER,
 196                                          "User ID "UID_FMT" is not logged in or lingering", uid);
 197
 198         *ret = user;
 199         return 0;
 200 }
 201
 202 int manager_get_seat_from_creds(
 203                 Manager *m,
 204                 sd_bus_message *message,
 205                 const char *name,
 206                 sd_bus_error *error,
 207                 Seat **ret) {
 208
 209         Seat *seat;
 210         int r;
 211
 212         assert(m);
 213         assert(ret);
 214
 215         if (SEAT_IS_SELF(name) || SEAT_IS_AUTO(name)) {
 216                 Session *session;
 217
 218                 /* Use these special seat names as session names */
 219                 r = manager_get_session_from_creds(m, message, name, error, &session);
 220                 if (r < 0)
 221                         return r;
 222
 223                 seat = session->seat;
 224                 if (!seat)
 225                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "Session '%s' has no seat.", session->id);
 226         } else {
 227                 seat = hashmap_get(m->seats, name);
 228                 if (!seat)
 229                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "No seat '%s' known", name);
 230         }
 231
 232         *ret = seat;
 233         return 0;
 234 }
 235
 236 static int return_test_polkit(
 237                 sd_bus_message *message,
 238                 int capability,
 239                 const char *action,
 240                 const char **details,
 241                 uid_t good_user,
 242                 sd_bus_error *e) {
 243
 244         const char *result;
 245         bool challenge;
 246         int r;
 247
 248         r = bus_test_polkit(message, capability, action, details, good_user, &challenge, e);
 249         if (r < 0)
 250                 return r;
 251
 252         if (r > 0)
 253                 result = "yes";
 254         else if (challenge)
 255                 result = "challenge";
 256         else
 257                 result = "no";
 258
 259         return sd_bus_reply_method_return(message, "s", result);
 260 }
 261
 262 static int property_get_idle_hint(
 263                 sd_bus *bus,
 264                 const char *path,
 265                 const char *interface,
 266                 const char *property,
 267                 sd_bus_message *reply,
 268                 void *userdata,
 269                 sd_bus_error *error) {
 270
 271         Manager *m = ASSERT_PTR(userdata);
 272
 273         assert(bus);
 274         assert(reply);
 275
 276         return sd_bus_message_append(reply, "b", manager_get_idle_hint(m, NULL) > 0);
 277 }
 278
 279 static int property_get_idle_since_hint(
 280                 sd_bus *bus,
 281                 const char *path,
 282                 const char *interface,
 283                 const char *property,
 284                 sd_bus_message *reply,
 285                 void *userdata,
 286                 sd_bus_error *error) {
 287
 288         Manager *m = ASSERT_PTR(userdata);
 289         dual_timestamp t = DUAL_TIMESTAMP_NULL;
 290
 291         assert(bus);
 292         assert(reply);
 293
 294         manager_get_idle_hint(m, &t);
 295
 296         return sd_bus_message_append(reply, "t", streq(property, "IdleSinceHint") ? t.realtime : t.monotonic);
 297 }
 298
 299 static int property_get_inhibited(
 300                 sd_bus *bus,
 301                 const char *path,
 302                 const char *interface,
 303                 const char *property,
 304                 sd_bus_message *reply,
 305                 void *userdata,
 306                 sd_bus_error *error) {
 307
 308         Manager *m = ASSERT_PTR(userdata);
 309         InhibitWhat w;
 310
 311         assert(bus);
 312         assert(reply);
 313
 314         w = manager_inhibit_what(m, streq(property, "BlockInhibited") ? INHIBIT_BLOCK : INHIBIT_DELAY);
 315
 316         return sd_bus_message_append(reply, "s", inhibit_what_to_string(w));
 317 }
 318
 319 static int property_get_preparing(
 320                 sd_bus *bus,
 321                 const char *path,
 322                 const char *interface,
 323                 const char *property,
 324                 sd_bus_message *reply,
 325                 void *userdata,
 326                 sd_bus_error *error) {
 327
 328         Manager *m = ASSERT_PTR(userdata);
 329         bool b = false;
 330
 331         assert(bus);
 332         assert(reply);
 333
 334         if (m->delayed_action) {
 335                 if (streq(property, "PreparingForShutdown"))
 336                         b = m->delayed_action->inhibit_what & INHIBIT_SHUTDOWN;
 337                 else
 338                         b = m->delayed_action->inhibit_what & INHIBIT_SLEEP;
 339         }
 340
 341         return sd_bus_message_append(reply, "b", b);
 342 }
 343
 344 static int property_get_scheduled_shutdown(
 345                 sd_bus *bus,
 346                 const char *path,
 347                 const char *interface,
 348                 const char *property,
 349                 sd_bus_message *reply,
 350                 void *userdata,
 351                 sd_bus_error *error) {
 352
 353         Manager *m = ASSERT_PTR(userdata);
 354         int r;
 355
 356         assert(bus);
 357         assert(reply);
 358
 359         r = sd_bus_message_open_container(reply, 'r', "st");
 360         if (r < 0)
 361                 return r;
 362
 363         r = sd_bus_message_append(reply, "st",
 364                 m->scheduled_shutdown_action ? handle_action_to_string(m->scheduled_shutdown_action->handle) : NULL,
 365                 m->scheduled_shutdown_timeout);
 366         if (r < 0)
 367                 return r;
 368
 369         return sd_bus_message_close_container(reply);
 370 }
 371
 372 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_handle_action, handle_action, HandleAction);
 373 static BUS_DEFINE_PROPERTY_GET(property_get_docked, "b", Manager, manager_is_docked_or_external_displays);
 374 static BUS_DEFINE_PROPERTY_GET(property_get_lid_closed, "b", Manager, manager_is_lid_closed);
 375 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_on_external_power, "b", manager_is_on_external_power);
 376 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_compat_user_tasks_max, "t", CGROUP_LIMIT_MAX);
 377 static BUS_DEFINE_PROPERTY_GET_REF(property_get_hashmap_size, "t", Hashmap *, (uint64_t) hashmap_size);
 378
 379 static int method_get_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 380         _cleanup_free_ char *p = NULL;
 381         Manager *m = ASSERT_PTR(userdata);
 382         const char *name;
 383         Session *session;
 384         int r;
 385
 386         assert(message);
 387
 388         r = sd_bus_message_read(message, "s", &name);
 389         if (r < 0)
 390                 return r;
 391
 392         r = manager_get_session_from_creds(m, message, name, error, &session);
 393         if (r < 0)
 394                 return r;
 395
 396         p = session_bus_path(session);
 397         if (!p)
 398                 return -ENOMEM;
 399
 400         return sd_bus_reply_method_return(message, "o", p);
 401 }
 402
 403 /* Get login session of a process.  This is not what you are looking for these days,
 404  * as apps may instead belong to a user service unit.  This includes terminal
 405  * emulators and hence command-line apps. */
 406 static int method_get_session_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 407         _cleanup_free_ char *p = NULL;
 408         Session *session = NULL;
 409         Manager *m = ASSERT_PTR(userdata);
 410         pid_t pid;
 411         int r;
 412
 413         assert(message);
 414
 415         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 416
 417         r = sd_bus_message_read(message, "u", &pid);
 418         if (r < 0)
 419                 return r;
 420         if (pid < 0)
 421                 return -EINVAL;
 422
 423         if (pid == 0) {
 424                 r = manager_get_session_from_creds(m, message, NULL, error, &session);
 425                 if (r < 0)
 426                         return r;
 427         } else {
 428                 r = manager_get_session_by_pid(m, pid, &session);
 429                 if (r < 0)
 430                         return r;
 431
 432                 if (!session)
 433                         return sd_bus_error_setf(error, BUS_ERROR_NO_SESSION_FOR_PID,
 434                                                  "PID "PID_FMT" does not belong to any known session", pid);
 435         }
 436
 437         p = session_bus_path(session);
 438         if (!p)
 439                 return -ENOMEM;
 440
 441         return sd_bus_reply_method_return(message, "o", p);
 442 }
 443
 444 static int method_get_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 445         _cleanup_free_ char *p = NULL;
 446         Manager *m = ASSERT_PTR(userdata);
 447         uint32_t uid;
 448         User *user;
 449         int r;
 450
 451         assert(message);
 452
 453         r = sd_bus_message_read(message, "u", &uid);
 454         if (r < 0)
 455                 return r;
 456
 457         r = manager_get_user_from_creds(m, message, uid, error, &user);
 458         if (r < 0)
 459                 return r;
 460
 461         p = user_bus_path(user);
 462         if (!p)
 463                 return -ENOMEM;
 464
 465         return sd_bus_reply_method_return(message, "o", p);
 466 }
 467
 468 static int method_get_user_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 469         _cleanup_free_ char *p = NULL;
 470         Manager *m = ASSERT_PTR(userdata);
 471         User *user = NULL;
 472         pid_t pid;
 473         int r;
 474
 475         assert(message);
 476
 477         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 478
 479         r = sd_bus_message_read(message, "u", &pid);
 480         if (r < 0)
 481                 return r;
 482         if (pid < 0)
 483                 return -EINVAL;
 484
 485         if (pid == 0) {
 486                 r = manager_get_user_from_creds(m, message, UID_INVALID, error, &user);
 487                 if (r < 0)
 488                         return r;
 489         } else {
 490                 r = manager_get_user_by_pid(m, pid, &user);
 491                 if (r < 0)
 492                         return r;
 493                 if (!user)
 494                         return sd_bus_error_setf(error, BUS_ERROR_NO_USER_FOR_PID,
 495                                                  "PID "PID_FMT" does not belong to any logged in user or lingering user",
 496                                                  pid);
 497         }
 498
 499         p = user_bus_path(user);
 500         if (!p)
 501                 return -ENOMEM;
 502
 503         return sd_bus_reply_method_return(message, "o", p);
 504 }
 505
 506 static int method_get_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 507         _cleanup_free_ char *p = NULL;
 508         Manager *m = ASSERT_PTR(userdata);
 509         const char *name;
 510         Seat *seat;
 511         int r;
 512
 513         assert(message);
 514
 515         r = sd_bus_message_read(message, "s", &name);
 516         if (r < 0)
 517                 return r;
 518
 519         r = manager_get_seat_from_creds(m, message, name, error, &seat);
 520         if (r < 0)
 521                 return r;
 522
 523         p = seat_bus_path(seat);
 524         if (!p)
 525                 return -ENOMEM;
 526
 527         return sd_bus_reply_method_return(message, "o", p);
 528 }
 529
 530 static int method_list_sessions(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 531         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 532         Manager *m = ASSERT_PTR(userdata);
 533         Session *session;
 534         int r;
 535
 536         assert(message);
 537
 538         r = sd_bus_message_new_method_return(message, &reply);
 539         if (r < 0)
 540                 return r;
 541
 542         r = sd_bus_message_open_container(reply, 'a', "(susso)");
 543         if (r < 0)
 544                 return r;
 545
 546         HASHMAP_FOREACH(session, m->sessions) {
 547                 _cleanup_free_ char *p = NULL;
 548
 549                 p = session_bus_path(session);
 550                 if (!p)
 551                         return -ENOMEM;
 552
 553                 r = sd_bus_message_append(reply, "(susso)",
 554                                           session->id,
 555                                           (uint32_t) session->user->user_record->uid,
 556                                           session->user->user_record->user_name,
 557                                           session->seat ? session->seat->id : "",
 558                                           p);
 559                 if (r < 0)
 560                         return r;
 561         }
 562
 563         r = sd_bus_message_close_container(reply);
 564         if (r < 0)
 565                 return r;
 566
 567         return sd_bus_send(NULL, reply, NULL);
 568 }
 569
 570 static int method_list_users(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 571         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 572         Manager *m = ASSERT_PTR(userdata);
 573         User *user;
 574         int r;
 575
 576         assert(message);
 577
 578         r = sd_bus_message_new_method_return(message, &reply);
 579         if (r < 0)
 580                 return r;
 581
 582         r = sd_bus_message_open_container(reply, 'a', "(uso)");
 583         if (r < 0)
 584                 return r;
 585
 586         HASHMAP_FOREACH(user, m->users) {
 587                 _cleanup_free_ char *p = NULL;
 588
 589                 p = user_bus_path(user);
 590                 if (!p)
 591                         return -ENOMEM;
 592
 593                 r = sd_bus_message_append(reply, "(uso)",
 594                                           (uint32_t) user->user_record->uid,
 595                                           user->user_record->user_name,
 596                                           p);
 597                 if (r < 0)
 598                         return r;
 599         }
 600
 601         r = sd_bus_message_close_container(reply);
 602         if (r < 0)
 603                 return r;
 604
 605         return sd_bus_send(NULL, reply, NULL);
 606 }
 607
 608 static int method_list_seats(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 609         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 610         Manager *m = ASSERT_PTR(userdata);
 611         Seat *seat;
 612         int r;
 613
 614         assert(message);
 615
 616         r = sd_bus_message_new_method_return(message, &reply);
 617         if (r < 0)
 618                 return r;
 619
 620         r = sd_bus_message_open_container(reply, 'a', "(so)");
 621         if (r < 0)
 622                 return r;
 623
 624         HASHMAP_FOREACH(seat, m->seats) {
 625                 _cleanup_free_ char *p = NULL;
 626
 627                 p = seat_bus_path(seat);
 628                 if (!p)
 629                         return -ENOMEM;
 630
 631                 r = sd_bus_message_append(reply, "(so)", seat->id, p);
 632                 if (r < 0)
 633                         return r;
 634         }
 635
 636         r = sd_bus_message_close_container(reply);
 637         if (r < 0)
 638                 return r;
 639
 640         return sd_bus_send(NULL, reply, NULL);
 641 }
 642
 643 static int method_list_inhibitors(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 644         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 645         Manager *m = ASSERT_PTR(userdata);
 646         Inhibitor *inhibitor;
 647         int r;
 648
 649         assert(message);
 650
 651         r = sd_bus_message_new_method_return(message, &reply);
 652         if (r < 0)
 653                 return r;
 654
 655         r = sd_bus_message_open_container(reply, 'a', "(ssssuu)");
 656         if (r < 0)
 657                 return r;
 658
 659         HASHMAP_FOREACH(inhibitor, m->inhibitors) {
 660
 661                 r = sd_bus_message_append(reply, "(ssssuu)",
 662                                           strempty(inhibit_what_to_string(inhibitor->what)),
 663                                           strempty(inhibitor->who),
 664                                           strempty(inhibitor->why),
 665                                           strempty(inhibit_mode_to_string(inhibitor->mode)),
 666                                           (uint32_t) inhibitor->uid,
 667                                           (uint32_t) inhibitor->pid);
 668                 if (r < 0)
 669                         return r;
 670         }
 671
 672         r = sd_bus_message_close_container(reply);
 673         if (r < 0)
 674                 return r;
 675
 676         return sd_bus_send(NULL, reply, NULL);
 677 }
 678
 679 static int method_create_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 680         const char *service, *type, *class, *cseat, *tty, *display, *remote_user, *remote_host, *desktop;
 681         _cleanup_free_ char *id = NULL;
 682         Session *session = NULL;
 683         uint32_t audit_id = 0;
 684         Manager *m = ASSERT_PTR(userdata);
 685         User *user = NULL;
 686         Seat *seat = NULL;
 687         pid_t leader;
 688         uid_t uid;
 689         int remote;
 690         uint32_t vtnr = 0;
 691         SessionType t;
 692         SessionClass c;
 693         int r;
 694
 695         assert(message);
 696
 697         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 698         assert_cc(sizeof(uid_t) == sizeof(uint32_t));
 699
 700         r = sd_bus_message_read(message, "uusssssussbss",
 701                                 &uid, &leader, &service, &type, &class, &desktop, &cseat,
 702                                 &vtnr, &tty, &display, &remote, &remote_user, &remote_host);
 703         if (r < 0)
 704                 return r;
 705
 706         if (!uid_is_valid(uid))
 707                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid UID");
 708         if (leader < 0 || leader == 1 || leader == getpid_cached())
 709                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid leader PID");
 710
 711         if (isempty(type))
 712                 t = _SESSION_TYPE_INVALID;
 713         else {
 714                 t = session_type_from_string(type);
 715                 if (t < 0)
 716                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 717                                                  "Invalid session type %s", type);
 718         }
 719
 720         if (isempty(class))
 721                 c = _SESSION_CLASS_INVALID;
 722         else {
 723                 c = session_class_from_string(class);
 724                 if (c < 0)
 725                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 726                                                  "Invalid session class %s", class);
 727         }
 728
 729         if (isempty(desktop))
 730                 desktop = NULL;
 731         else {
 732                 if (!string_is_safe(desktop))
 733                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 734                                                  "Invalid desktop string %s", desktop);
 735         }
 736
 737         if (isempty(cseat))
 738                 seat = NULL;
 739         else {
 740                 seat = hashmap_get(m->seats, cseat);
 741                 if (!seat)
 742                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT,
 743                                                  "No seat '%s' known", cseat);
 744         }
 745
 746         if (tty_is_vc(tty)) {
 747                 int v;
 748
 749                 if (!seat)
 750                         seat = m->seat0;
 751                 else if (seat != m->seat0)
 752                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 753                                                  "TTY %s is virtual console but seat %s is not seat0", tty, seat->id);
 754
 755                 v = vtnr_from_tty(tty);
 756                 if (v <= 0)
 757                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 758                                                  "Cannot determine VT number from virtual console TTY %s", tty);
 759
 760                 if (vtnr == 0)
 761                         vtnr = (uint32_t) v;
 762                 else if (vtnr != (uint32_t) v)
 763                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 764                                                  "Specified TTY and VT number do not match");
 765
 766         } else if (tty_is_console(tty)) {
 767
 768                 if (!seat)
 769                         seat = m->seat0;
 770                 else if (seat != m->seat0)
 771                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 772                                                  "Console TTY specified but seat is not seat0");
 773
 774                 if (vtnr != 0)
 775                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 776                                                  "Console TTY specified but VT number is not 0");
 777         }
 778
 779         if (seat) {
 780                 if (seat_has_vts(seat)) {
 781                         if (vtnr <= 0 || vtnr > 63)
 782                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 783                                                          "VT number out of range");
 784                 } else {
 785                         if (vtnr != 0)
 786                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 787                                                          "Seat has no VTs but VT number not 0");
 788                 }
 789         }
 790
 791         if (t == _SESSION_TYPE_INVALID) {
 792                 if (!isempty(display))
 793                         t = SESSION_X11;
 794                 else if (!isempty(tty))
 795                         t = SESSION_TTY;
 796                 else
 797                         t = SESSION_UNSPECIFIED;
 798         }
 799
 800         if (c == _SESSION_CLASS_INVALID) {
 801                 if (t == SESSION_UNSPECIFIED)
 802                         c = SESSION_BACKGROUND;
 803                 else
 804                         c = SESSION_USER;
 805         }
 806
 807         if (leader == 0) {
 808                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 809
 810                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 811                 if (r < 0)
 812                         return r;
 813
 814                 r = sd_bus_creds_get_pid(creds, (pid_t*) &leader);
 815                 if (r < 0)
 816                         return r;
 817         }
 818
 819         /* Check if we are already in a logind session. Or if we are in user@.service
 820          * which is a special PAM session that avoids creating a logind session. */
 821         r = manager_get_user_by_pid(m, leader, NULL);
 822         if (r < 0)
 823                 return r;
 824         if (r > 0)
 825                 return sd_bus_error_setf(error, BUS_ERROR_SESSION_BUSY,
 826                                          "Already running in a session or user slice");
 827
 828         /*
 829          * Old gdm and lightdm start the user-session on the same VT as
 830          * the greeter session. But they destroy the greeter session
 831          * after the user-session and want the user-session to take
 832          * over the VT. We need to support this for
 833          * backwards-compatibility, so make sure we allow new sessions
 834          * on a VT that a greeter is running on. Furthermore, to allow
 835          * re-logins, we have to allow a greeter to take over a used VT for
 836          * the exact same reasons.
 837          */
 838         if (c != SESSION_GREETER &&
 839             vtnr > 0 &&
 840             vtnr < MALLOC_ELEMENTSOF(m->seat0->positions) &&
 841             m->seat0->positions[vtnr] &&
 842             m->seat0->positions[vtnr]->class != SESSION_GREETER)
 843                 return sd_bus_error_set(error, BUS_ERROR_SESSION_BUSY, "Already occupied by a session");
 844
 845         if (hashmap_size(m->sessions) >= m->sessions_max)
 846                 return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED,
 847                                          "Maximum number of sessions (%" PRIu64 ") reached, refusing further sessions.",
 848                                          m->sessions_max);
 849
 850         (void) audit_session_from_pid(leader, &audit_id);
 851         if (audit_session_is_valid(audit_id)) {
 852                 /* Keep our session IDs and the audit session IDs in sync */
 853
 854                 if (asprintf(&id, "%"PRIu32, audit_id) < 0)
 855                         return -ENOMEM;
 856
 857                 /* Wut? There's already a session by this name and we didn't find it above? Weird, then let's
 858                  * not trust the audit data and let's better register a new ID */
 859                 if (hashmap_contains(m->sessions, id)) {
 860                         log_warning("Existing logind session ID %s used by new audit session, ignoring.", id);
 861                         audit_id = AUDIT_SESSION_INVALID;
 862                         id = mfree(id);
 863                 }
 864         }
 865
 866         if (!id) {
 867                 do {
 868                         id = mfree(id);
 869
 870                         if (asprintf(&id, "c%lu", ++m->session_counter) < 0)
 871                                 return -ENOMEM;
 872
 873                 } while (hashmap_contains(m->sessions, id));
 874         }
 875
 876         /* The generated names should not clash with 'auto' or 'self' */
 877         assert(!SESSION_IS_SELF(id));
 878         assert(!SESSION_IS_AUTO(id));
 879
 880         /* If we are not watching utmp already, try again */
 881         manager_reconnect_utmp(m);
 882
 883         r = manager_add_user_by_uid(m, uid, &user);
 884         if (r < 0)
 885                 goto fail;
 886
 887         r = manager_add_session(m, id, &session);
 888         if (r < 0)
 889                 goto fail;
 890
 891         session_set_user(session, user);
 892         r = session_set_leader(session, leader);
 893         if (r < 0)
 894                 goto fail;
 895
 896         session->original_type = session->type = t;
 897         session->class = c;
 898         session->remote = remote;
 899         session->vtnr = vtnr;
 900
 901         if (!isempty(tty)) {
 902                 session->tty = strdup(tty);
 903                 if (!session->tty) {
 904                         r = -ENOMEM;
 905                         goto fail;
 906                 }
 907
 908                 session->tty_validity = TTY_FROM_PAM;
 909         }
 910
 911         if (!isempty(display)) {
 912                 session->display = strdup(display);
 913                 if (!session->display) {
 914                         r = -ENOMEM;
 915                         goto fail;
 916                 }
 917         }
 918
 919         if (!isempty(remote_user)) {
 920                 session->remote_user = strdup(remote_user);
 921                 if (!session->remote_user) {
 922                         r = -ENOMEM;
 923                         goto fail;
 924                 }
 925         }
 926
 927         if (!isempty(remote_host)) {
 928                 session->remote_host = strdup(remote_host);
 929                 if (!session->remote_host) {
 930                         r = -ENOMEM;
 931                         goto fail;
 932                 }
 933         }
 934
 935         if (!isempty(service)) {
 936                 session->service = strdup(service);
 937                 if (!session->service) {
 938                         r = -ENOMEM;
 939                         goto fail;
 940                 }
 941         }
 942
 943         if (!isempty(desktop)) {
 944                 session->desktop = strdup(desktop);
 945                 if (!session->desktop) {
 946                         r = -ENOMEM;
 947                         goto fail;
 948                 }
 949         }
 950
 951         if (seat) {
 952                 r = seat_attach_session(seat, session);
 953                 if (r < 0)
 954                         goto fail;
 955         }
 956
 957         r = sd_bus_message_enter_container(message, 'a', "(sv)");
 958         if (r < 0)
 959                 goto fail;
 960
 961         r = session_start(session, message, error);
 962         if (r < 0)
 963                 goto fail;
 964
 965         r = sd_bus_message_exit_container(message);
 966         if (r < 0)
 967                 goto fail;
 968
 969         session->create_message = sd_bus_message_ref(message);
 970
 971         /* Now, let's wait until the slice unit and stuff got created. We send the reply back from
 972          * session_send_create_reply(). */
 973
 974         return 1;
 975
 976 fail:
 977         if (session)
 978                 session_add_to_gc_queue(session);
 979
 980         if (user)
 981                 user_add_to_gc_queue(user);
 982
 983         return r;
 984 }
 985
 986 static int method_release_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 987         Manager *m = ASSERT_PTR(userdata);
 988         Session *session;
 989         const char *name;
 990         int r;
 991
 992         assert(message);
 993
 994         r = sd_bus_message_read(message, "s", &name);
 995         if (r < 0)
 996                 return r;
 997
 998         r = manager_get_session_from_creds(m, message, name, error, &session);
 999         if (r < 0)
1000                 return r;
1001
1002         r = session_release(session);
1003         if (r < 0)
1004                 return r;
1005
1006         return sd_bus_reply_method_return(message, NULL);
1007 }
1008
1009 static int method_activate_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1010         Manager *m = ASSERT_PTR(userdata);
1011         Session *session;
1012         const char *name;
1013         int r;
1014
1015         assert(message);
1016
1017         r = sd_bus_message_read(message, "s", &name);
1018         if (r < 0)
1019                 return r;
1020
1021         r = manager_get_session_from_creds(m, message, name, error, &session);
1022         if (r < 0)
1023                 return r;
1024
1025         /* PolicyKit is done by bus_session_method_activate() */
1026
1027         return bus_session_method_activate(message, session, error);
1028 }
1029
1030 static int method_activate_session_on_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1031         const char *session_name, *seat_name;
1032         Manager *m = ASSERT_PTR(userdata);
1033         Session *session;
1034         Seat *seat;
1035         int r;
1036
1037         assert(message);
1038
1039         /* Same as ActivateSession() but refuses to work if the seat doesn't match */
1040
1041         r = sd_bus_message_read(message, "ss", &session_name, &seat_name);
1042         if (r < 0)
1043                 return r;
1044
1045         r = manager_get_session_from_creds(m, message, session_name, error, &session);
1046         if (r < 0)
1047                 return r;
1048
1049         r = manager_get_seat_from_creds(m, message, seat_name, error, &seat);
1050         if (r < 0)
1051                 return r;
1052
1053         if (session->seat != seat)
1054                 return sd_bus_error_setf(error, BUS_ERROR_SESSION_NOT_ON_SEAT,
1055                                          "Session %s not on seat %s", session_name, seat_name);
1056
1057         r = check_polkit_chvt(message, m, error);
1058         if (r < 0)
1059                 return r;
1060         if (r == 0)
1061                 return 1; /* Will call us back */
1062
1063         r = session_activate(session);
1064         if (r < 0)
1065                 return r;
1066
1067         return sd_bus_reply_method_return(message, NULL);
1068 }
1069
1070 static int method_lock_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1071         Manager *m = ASSERT_PTR(userdata);
1072         Session *session;
1073         const char *name;
1074         int r;
1075
1076         assert(message);
1077
1078         r = sd_bus_message_read(message, "s", &name);
1079         if (r < 0)
1080                 return r;
1081
1082         r = manager_get_session_from_creds(m, message, name, error, &session);
1083         if (r < 0)
1084                 return r;
1085
1086         return bus_session_method_lock(message, session, error);
1087 }
1088
1089 static int method_lock_sessions(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1090         Manager *m = ASSERT_PTR(userdata);
1091         int r;
1092
1093         assert(message);
1094
1095         r = bus_verify_polkit_async(
1096                         message,
1097                         CAP_SYS_ADMIN,
1098                         "org.freedesktop.login1.lock-sessions",
1099                         NULL,
1100                         false,
1101                         UID_INVALID,
1102                         &m->polkit_registry,
1103                         error);
1104         if (r < 0)
1105                 return r;
1106         if (r == 0)
1107                 return 1; /* Will call us back */
1108
1109         r = session_send_lock_all(m, streq(sd_bus_message_get_member(message), "LockSessions"));
1110         if (r < 0)
1111                 return r;
1112
1113         return sd_bus_reply_method_return(message, NULL);
1114 }
1115
1116 static int method_kill_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1117         const char *name;
1118         Manager *m = ASSERT_PTR(userdata);
1119         Session *session;
1120         int r;
1121
1122         assert(message);
1123
1124         r = sd_bus_message_read(message, "s", &name);
1125         if (r < 0)
1126                 return r;
1127
1128         r = manager_get_session_from_creds(m, message, name, error, &session);
1129         if (r < 0)
1130                 return r;
1131
1132         return bus_session_method_kill(message, session, error);
1133 }
1134
1135 static int method_kill_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1136         Manager *m = ASSERT_PTR(userdata);
1137         uint32_t uid;
1138         User *user;
1139         int r;
1140
1141         assert(message);
1142
1143         r = sd_bus_message_read(message, "u", &uid);
1144         if (r < 0)
1145                 return r;
1146
1147         r = manager_get_user_from_creds(m, message, uid, error, &user);
1148         if (r < 0)
1149                 return r;
1150
1151         return bus_user_method_kill(message, user, error);
1152 }
1153
1154 static int method_terminate_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1155         Manager *m = ASSERT_PTR(userdata);
1156         const char *name;
1157         Session *session;
1158         int r;
1159
1160         assert(message);
1161
1162         r = sd_bus_message_read(message, "s", &name);
1163         if (r < 0)
1164                 return r;
1165
1166         r = manager_get_session_from_creds(m, message, name, error, &session);
1167         if (r < 0)
1168                 return r;
1169
1170         return bus_session_method_terminate(message, session, error);
1171 }
1172
1173 static int method_terminate_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1174         Manager *m = ASSERT_PTR(userdata);
1175         uint32_t uid;
1176         User *user;
1177         int r;
1178
1179         assert(message);
1180
1181         r = sd_bus_message_read(message, "u", &uid);
1182         if (r < 0)
1183                 return r;
1184
1185         r = manager_get_user_from_creds(m, message, uid, error, &user);
1186         if (r < 0)
1187                 return r;
1188
1189         return bus_user_method_terminate(message, user, error);
1190 }
1191
1192 static int method_terminate_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1193         Manager *m = ASSERT_PTR(userdata);
1194         const char *name;
1195         Seat *seat;
1196         int r;
1197
1198         assert(message);
1199
1200         r = sd_bus_message_read(message, "s", &name);
1201         if (r < 0)
1202                 return r;
1203
1204         r = manager_get_seat_from_creds(m, message, name, error, &seat);
1205         if (r < 0)
1206                 return r;
1207
1208         return bus_seat_method_terminate(message, seat, error);
1209 }
1210
1211 static int method_set_user_linger(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1212         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
1213         _cleanup_free_ char *cc = NULL;
1214         Manager *m = ASSERT_PTR(userdata);
1215         int r, b, interactive;
1216         struct passwd *pw;
1217         const char *path;
1218         uint32_t uid, auth_uid;
1219
1220         assert(message);
1221
1222         r = sd_bus_message_read(message, "ubb", &uid, &b, &interactive);
1223         if (r < 0)
1224                 return r;
1225
1226         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID |
1227                                                SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds);
1228         if (r < 0)
1229                 return r;
1230
1231         if (!uid_is_valid(uid)) {
1232                 /* Note that we get the owner UID of the session or user unit,
1233                  * not the actual client UID here! */
1234                 r = sd_bus_creds_get_owner_uid(creds, &uid);
1235                 if (r < 0)
1236                         return r;
1237         }
1238
1239         /* owner_uid is racy, so for authorization we must use euid */
1240         r = sd_bus_creds_get_euid(creds, &auth_uid);
1241         if (r < 0)
1242                 return r;
1243
1244         errno = 0;
1245         pw = getpwuid(uid);
1246         if (!pw)
1247                 return errno_or_else(ENOENT);
1248
1249         r = bus_verify_polkit_async(
1250                         message,
1251                         CAP_SYS_ADMIN,
1252                         uid == auth_uid ? "org.freedesktop.login1.set-self-linger" :
1253                                           "org.freedesktop.login1.set-user-linger",
1254                         NULL,
1255                         interactive,
1256                         UID_INVALID,
1257                         &m->polkit_registry,
1258                         error);
1259         if (r < 0)
1260                 return r;
1261         if (r == 0)
1262                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1263
1264         (void) mkdir_p_label("/var/lib/systemd", 0755);
1265         r = mkdir_safe_label("/var/lib/systemd/linger", 0755, 0, 0, MKDIR_WARN_MODE);
1266         if (r < 0)
1267                 return r;
1268
1269         cc = cescape(pw->pw_name);
1270         if (!cc)
1271                 return -ENOMEM;
1272
1273         path = strjoina("/var/lib/systemd/linger/", cc);
1274         if (b) {
1275                 User *u;
1276
1277                 r = touch(path);
1278                 if (r < 0)
1279                         return r;
1280
1281                 if (manager_add_user_by_uid(m, uid, &u) >= 0)
1282                         user_start(u);
1283
1284         } else {
1285                 User *u;
1286
1287                 r = unlink(path);
1288                 if (r < 0 && errno != ENOENT)
1289                         return -errno;
1290
1291                 u = hashmap_get(m->users, UID_TO_PTR(uid));
1292                 if (u)
1293                         user_add_to_gc_queue(u);
1294         }
1295
1296         return sd_bus_reply_method_return(message, NULL);
1297 }
1298
1299 static int trigger_device(Manager *m, sd_device *d) {
1300         _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL;
1301         int r;
1302
1303         assert(m);
1304
1305         r = sd_device_enumerator_new(&e);
1306         if (r < 0)
1307                 return r;
1308
1309         r = sd_device_enumerator_allow_uninitialized(e);
1310         if (r < 0)
1311                 return r;
1312
1313         if (d) {
1314                 r = sd_device_enumerator_add_match_parent(e, d);
1315                 if (r < 0)
1316                         return r;
1317         }
1318
1319         FOREACH_DEVICE(e, d) {
1320                 r = sd_device_trigger(d, SD_DEVICE_CHANGE);
1321                 if (r < 0)
1322                         log_device_debug_errno(d, r, "Failed to trigger device, ignoring: %m");
1323         }
1324
1325         return 0;
1326 }
1327
1328 static int attach_device(Manager *m, const char *seat, const char *sysfs) {
1329         _cleanup_(sd_device_unrefp) sd_device *d = NULL;
1330         _cleanup_free_ char *rule = NULL, *file = NULL;
1331         const char *id_for_seat;
1332         int r;
1333
1334         assert(m);
1335         assert(seat);
1336         assert(sysfs);
1337
1338         r = sd_device_new_from_syspath(&d, sysfs);
1339         if (r < 0)
1340                 return r;
1341
1342         if (sd_device_has_current_tag(d, "seat") <= 0)
1343                 return -ENODEV;
1344
1345         if (sd_device_get_property_value(d, "ID_FOR_SEAT", &id_for_seat) < 0)
1346                 return -ENODEV;
1347
1348         if (asprintf(&file, "/etc/udev/rules.d/72-seat-%s.rules", id_for_seat) < 0)
1349                 return -ENOMEM;
1350
1351         if (asprintf(&rule, "TAG==\"seat\", ENV{ID_FOR_SEAT}==\"%s\", ENV{ID_SEAT}=\"%s\"", id_for_seat, seat) < 0)
1352                 return -ENOMEM;
1353
1354         (void) mkdir_p_label("/etc/udev/rules.d", 0755);
1355         r = write_string_file_atomic_label(file, rule);
1356         if (r < 0)
1357                 return r;
1358
1359         return trigger_device(m, d);
1360 }
1361
1362 static int flush_devices(Manager *m) {
1363         _cleanup_closedir_ DIR *d = NULL;
1364
1365         assert(m);
1366
1367         d = opendir("/etc/udev/rules.d");
1368         if (!d) {
1369                 if (errno != ENOENT)
1370                         log_warning_errno(errno, "Failed to open /etc/udev/rules.d: %m");
1371         } else
1372                 FOREACH_DIRENT_ALL(de, d, break) {
1373                         if (!dirent_is_file(de))
1374                                 continue;
1375
1376                         if (!startswith(de->d_name, "72-seat-"))
1377                                 continue;
1378
1379                         if (!endswith(de->d_name, ".rules"))
1380                                 continue;
1381
1382                         if (unlinkat(dirfd(d), de->d_name, 0) < 0)
1383                                 log_warning_errno(errno, "Failed to unlink %s: %m", de->d_name);
1384                 }
1385
1386         return trigger_device(m, NULL);
1387 }
1388
1389 static int method_attach_device(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1390         const char *sysfs, *seat;
1391         Manager *m = ASSERT_PTR(userdata);
1392         int interactive, r;
1393
1394         assert(message);
1395
1396         r = sd_bus_message_read(message, "ssb", &seat, &sysfs, &interactive);
1397         if (r < 0)
1398                 return r;
1399
1400         if (!path_is_normalized(sysfs))
1401                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not normalized", sysfs);
1402         if (!path_startswith(sysfs, "/sys"))
1403                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not in /sys", sysfs);
1404
1405         if (SEAT_IS_SELF(seat) || SEAT_IS_AUTO(seat)) {
1406                 Seat *found;
1407
1408                 r = manager_get_seat_from_creds(m, message, seat, error, &found);
1409                 if (r < 0)
1410                         return r;
1411
1412                 seat = found->id;
1413
1414         } else if (!seat_name_is_valid(seat)) /* Note that a seat does not have to exist yet for this operation to succeed */
1415                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Seat name %s is not valid", seat);
1416
1417         r = bus_verify_polkit_async(
1418                         message,
1419                         CAP_SYS_ADMIN,
1420                         "org.freedesktop.login1.attach-device",
1421                         NULL,
1422                         interactive,
1423                         UID_INVALID,
1424                         &m->polkit_registry,
1425                         error);
1426         if (r < 0)
1427                 return r;
1428         if (r == 0)
1429                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1430
1431         r = attach_device(m, seat, sysfs);
1432         if (r < 0)
1433                 return r;
1434
1435         return sd_bus_reply_method_return(message, NULL);
1436 }
1437
1438 static int method_flush_devices(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1439         Manager *m = ASSERT_PTR(userdata);
1440         int interactive, r;
1441
1442         assert(message);
1443
1444         r = sd_bus_message_read(message, "b", &interactive);
1445         if (r < 0)
1446                 return r;
1447
1448         r = bus_verify_polkit_async(
1449                         message,
1450                         CAP_SYS_ADMIN,
1451                         "org.freedesktop.login1.flush-devices",
1452                         NULL,
1453                         interactive,
1454                         UID_INVALID,
1455                         &m->polkit_registry,
1456                         error);
1457         if (r < 0)
1458                 return r;
1459         if (r == 0)
1460                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1461
1462         r = flush_devices(m);
1463         if (r < 0)
1464                 return r;
1465
1466         return sd_bus_reply_method_return(message, NULL);
1467 }
1468
1469 static int have_multiple_sessions(
1470                 Manager *m,
1471                 uid_t uid) {
1472
1473         Session *session;
1474
1475         assert(m);
1476
1477         /* Check for other users' sessions. Greeter sessions do not
1478          * count, and non-login sessions do not count either. */
1479         HASHMAP_FOREACH(session, m->sessions)
1480                 if (session->class == SESSION_USER &&
1481                     session->user->user_record->uid != uid)
1482                         return true;
1483
1484         return false;
1485 }
1486
1487 static int bus_manager_log_shutdown(
1488                 Manager *m,
1489                 const HandleActionData *a) {
1490         assert(m);
1491         assert(a);
1492
1493         const char *message = a->message ?: "System is shutting down";
1494         const char *log_verb = a->log_verb ? strjoina("SHUTDOWN=", a->log_verb) : NULL;
1495
1496         return log_struct(LOG_NOTICE,
1497                           "MESSAGE_ID=%s", a->message_id ?: SD_MESSAGE_SHUTDOWN_STR,
1498                           LOG_MESSAGE("%s%s%s%s.",
1499                                       message,
1500                                       m->wall_message ? " (" : "",
1501                                       strempty(m->wall_message),
1502                                       m->wall_message ? ")" : ""),
1503                           log_verb);
1504 }
1505
1506 static int lid_switch_ignore_handler(sd_event_source *e, uint64_t usec, void *userdata) {
1507         Manager *m = ASSERT_PTR(userdata);
1508
1509         assert(e);
1510
1511         m->lid_switch_ignore_event_source = sd_event_source_unref(m->lid_switch_ignore_event_source);
1512         return 0;
1513 }
1514
1515 int manager_set_lid_switch_ignore(Manager *m, usec_t until) {
1516         int r;
1517
1518         assert(m);
1519
1520         if (until <= now(CLOCK_MONOTONIC))
1521                 return 0;
1522
1523         /* We want to ignore the lid switch for a while after each
1524          * suspend, and after boot-up. Hence let's install a timer for
1525          * this. As long as the event source exists we ignore the lid
1526          * switch. */
1527
1528         if (m->lid_switch_ignore_event_source) {
1529                 usec_t u;
1530
1531                 r = sd_event_source_get_time(m->lid_switch_ignore_event_source, &u);
1532                 if (r < 0)
1533                         return r;
1534
1535                 if (until <= u)
1536                         return 0;
1537
1538                 r = sd_event_source_set_time(m->lid_switch_ignore_event_source, until);
1539         } else
1540                 r = sd_event_add_time(
1541                                 m->event,
1542                                 &m->lid_switch_ignore_event_source,
1543                                 CLOCK_MONOTONIC,
1544                                 until, 0,
1545                                 lid_switch_ignore_handler, m);
1546
1547         return r;
1548 }
1549
1550 static int send_prepare_for(Manager *m, InhibitWhat w, bool _active) {
1551         int active = _active;
1552
1553         assert(m);
1554         assert(IN_SET(w, INHIBIT_SHUTDOWN, INHIBIT_SLEEP));
1555
1556         return sd_bus_emit_signal(m->bus,
1557                                   "/org/freedesktop/login1",
1558                                   "org.freedesktop.login1.Manager",
1559                                   w == INHIBIT_SHUTDOWN ? "PrepareForShutdown" : "PrepareForSleep",
1560                                   "b",
1561                                   active);
1562 }
1563
1564 static int execute_shutdown_or_sleep(
1565                 Manager *m,
1566                 const HandleActionData *a,
1567                 sd_bus_error *error) {
1568
1569         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1570         const char *p;
1571         int r;
1572
1573         assert(m);
1574         assert(a);
1575
1576         if (a->inhibit_what == INHIBIT_SHUTDOWN)
1577                 bus_manager_log_shutdown(m, a);
1578
1579         r = bus_call_method(
1580                         m->bus,
1581                         bus_systemd_mgr,
1582                         "StartUnit",
1583                         error,
1584                         &reply,
1585                         "ss", a->target, "replace-irreversibly");
1586         if (r < 0)
1587                 goto error;
1588
1589         r = sd_bus_message_read(reply, "o", &p);
1590         if (r < 0)
1591                 goto error;
1592
1593         r = free_and_strdup(&m->action_job, p);
1594         if (r < 0)
1595                 goto error;
1596
1597         m->delayed_action = a;
1598
1599         /* Make sure the lid switch is ignored for a while */
1600         manager_set_lid_switch_ignore(m, usec_add(now(CLOCK_MONOTONIC), m->holdoff_timeout_usec));
1601
1602         return 0;
1603
1604 error:
1605         /* Tell people that they now may take a lock again */
1606         (void) send_prepare_for(m, a->inhibit_what, false);
1607
1608         return r;
1609 }
1610
1611 int manager_dispatch_delayed(Manager *manager, bool timeout) {
1612         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1613         Inhibitor *offending = NULL;
1614         int r;
1615
1616         assert(manager);
1617
1618         if (!manager->delayed_action || manager->action_job)
1619                 return 0;
1620
1621         if (manager_is_inhibited(manager, manager->delayed_action->inhibit_what, INHIBIT_DELAY, NULL, false, false, 0, &offending)) {
1622                 _cleanup_free_ char *comm = NULL, *u = NULL;
1623
1624                 if (!timeout)
1625                         return 0;
1626
1627                 (void) get_process_comm(offending->pid, &comm);
1628                 u = uid_to_name(offending->uid);
1629
1630                 log_notice("Delay lock is active (UID "UID_FMT"/%s, PID "PID_FMT"/%s) but inhibitor timeout is reached.",
1631                            offending->uid, strna(u),
1632                            offending->pid, strna(comm));
1633         }
1634
1635         /* Actually do the operation */
1636         r = execute_shutdown_or_sleep(manager, manager->delayed_action, &error);
1637         if (r < 0) {
1638                 log_warning("Error during inhibitor-delayed operation (already returned success to client): %s",
1639                             bus_error_message(&error, r));
1640
1641                 manager->delayed_action = NULL;
1642         }
1643
1644         return 1; /* We did some work. */
1645 }
1646
1647 static int manager_inhibit_timeout_handler(
1648                         sd_event_source *s,
1649                         uint64_t usec,
1650                         void *userdata) {
1651
1652         Manager *manager = ASSERT_PTR(userdata);
1653
1654         assert(manager->inhibit_timeout_source == s);
1655
1656         return manager_dispatch_delayed(manager, true);
1657 }
1658
1659 static int delay_shutdown_or_sleep(
1660                 Manager *m,
1661                 const HandleActionData *a) {
1662
1663         int r;
1664
1665         assert(m);
1666         assert(a);
1667
1668         if (m->inhibit_timeout_source) {
1669                 r = sd_event_source_set_time_relative(m->inhibit_timeout_source, m->inhibit_delay_max);
1670                 if (r < 0)
1671                         return log_error_errno(r, "sd_event_source_set_time_relative() failed: %m");
1672
1673                 r = sd_event_source_set_enabled(m->inhibit_timeout_source, SD_EVENT_ONESHOT);
1674                 if (r < 0)
1675                         return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
1676         } else {
1677                 r = sd_event_add_time_relative(
1678                                 m->event,
1679                                 &m->inhibit_timeout_source,
1680                                 CLOCK_MONOTONIC, m->inhibit_delay_max, 0,
1681                                 manager_inhibit_timeout_handler, m);
1682                 if (r < 0)
1683                         return r;
1684         }
1685
1686         m->delayed_action = a;
1687
1688         return 0;
1689 }
1690
1691 int bus_manager_shutdown_or_sleep_now_or_later(
1692                 Manager *m,
1693                 const HandleActionData *a,
1694                 sd_bus_error *error) {
1695
1696         _cleanup_free_ char *load_state = NULL;
1697         bool delayed;
1698         int r;
1699
1700         assert(m);
1701         assert(a);
1702         assert(!m->action_job);
1703
1704         r = unit_load_state(m->bus, a->target, &load_state);
1705         if (r < 0)
1706                 return r;
1707
1708         if (!streq(load_state, "loaded"))
1709                 return log_notice_errno(SYNTHETIC_ERRNO(EACCES),
1710                                         "Unit %s is %s, refusing operation.",
1711                                         a->target, load_state);
1712
1713         /* Tell everybody to prepare for shutdown/sleep */
1714         (void) send_prepare_for(m, a->inhibit_what, true);
1715
1716         delayed =
1717                 m->inhibit_delay_max > 0 &&
1718                 manager_is_inhibited(m, a->inhibit_what, INHIBIT_DELAY, NULL, false, false, 0, NULL);
1719
1720         if (delayed)
1721                 /* Shutdown is delayed, keep in mind what we
1722                  * want to do, and start a timeout */
1723                 r = delay_shutdown_or_sleep(m, a);
1724         else
1725                 /* Shutdown is not delayed, execute it
1726                  * immediately */
1727                 r = execute_shutdown_or_sleep(m, a, error);
1728
1729         return r;
1730 }
1731
1732 static int verify_shutdown_creds(
1733                 Manager *m,
1734                 sd_bus_message *message,
1735                 const HandleActionData *a,
1736                 uint64_t flags,
1737                 sd_bus_error *error) {
1738
1739         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
1740         bool multiple_sessions, blocked, interactive;
1741         uid_t uid;
1742         int r;
1743
1744         assert(m);
1745         assert(a);
1746         assert(message);
1747
1748         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
1749         if (r < 0)
1750                 return r;
1751
1752         r = sd_bus_creds_get_euid(creds, &uid);
1753         if (r < 0)
1754                 return r;
1755
1756         r = have_multiple_sessions(m, uid);
1757         if (r < 0)
1758                 return r;
1759
1760         multiple_sessions = r > 0;
1761         blocked = manager_is_inhibited(m, a->inhibit_what, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
1762         interactive = flags & SD_LOGIND_INTERACTIVE;
1763
1764         if (multiple_sessions) {
1765                 r = bus_verify_polkit_async(
1766                                 message,
1767                                 CAP_SYS_BOOT,
1768                                 a->polkit_action_multiple_sessions,
1769                                 NULL,
1770                                 interactive,
1771                                 UID_INVALID,
1772                                 &m->polkit_registry,
1773                                 error);
1774                 if (r < 0)
1775                         return r;
1776                 if (r == 0)
1777                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1778         }
1779
1780         if (blocked) {
1781                 /* We don't check polkit for root here, because you can't be more privileged than root */
1782                 if (uid == 0 && (flags & SD_LOGIND_ROOT_CHECK_INHIBITORS))
1783                         return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED,
1784                                                  "Access denied to root due to active block inhibitor");
1785
1786                 r = bus_verify_polkit_async(message,
1787                                 CAP_SYS_BOOT,
1788                                 a->polkit_action_ignore_inhibit,
1789                                 NULL,
1790                                 interactive,
1791                                 UID_INVALID,
1792                                 &m->polkit_registry,
1793                                 error);
1794                 if (r < 0)
1795                         return r;
1796                 if (r == 0)
1797                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1798         }
1799
1800         if (!multiple_sessions && !blocked) {
1801                 r = bus_verify_polkit_async(message,
1802                                 CAP_SYS_BOOT,
1803                                 a->polkit_action,
1804                                 NULL,
1805                                 interactive,
1806                                 UID_INVALID,
1807                                 &m->polkit_registry,
1808                                 error);
1809                 if (r < 0)
1810                         return r;
1811                 if (r == 0)
1812                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1813         }
1814
1815         return 0;
1816 }
1817
1818 static int setup_wall_message_timer(Manager *m, sd_bus_message* message) {
1819         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
1820         int r;
1821
1822         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
1823         if (r >= 0) {
1824                 const char *tty = NULL;
1825
1826                 (void) sd_bus_creds_get_uid(creds, &m->scheduled_shutdown_uid);
1827                 (void) sd_bus_creds_get_tty(creds, &tty);
1828
1829                 r = free_and_strdup(&m->scheduled_shutdown_tty, tty);
1830                 if (r < 0)
1831                         return log_oom();
1832         }
1833
1834         r = manager_setup_wall_message_timer(m);
1835         if (r < 0)
1836                 return r;
1837
1838         return 0;
1839 }
1840
1841 static int method_do_shutdown_or_sleep(
1842                 Manager *m,
1843                 sd_bus_message *message,
1844                 const HandleActionData *a,
1845                 bool with_flags,
1846                 sd_bus_error *error) {
1847
1848         uint64_t flags;
1849         int r;
1850
1851         assert(m);
1852         assert(message);
1853         assert(a);
1854
1855         if (with_flags) {
1856                 /* New style method: with flags parameter (and interactive bool in the bus message header) */
1857                 r = sd_bus_message_read(message, "t", &flags);
1858                 if (r < 0)
1859                         return r;
1860                 if ((flags & ~SD_LOGIND_SHUTDOWN_AND_SLEEP_FLAGS_PUBLIC) != 0)
1861                         return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS,
1862                                                 "Invalid flags parameter");
1863                 if (a->handle != HANDLE_REBOOT && (flags & SD_LOGIND_REBOOT_VIA_KEXEC))
1864                         return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS,
1865                                                 "Reboot via kexec is only applicable with reboot operations");
1866         } else {
1867                 /* Old style method: no flags parameter, but interactive bool passed as boolean in
1868                  * payload. Let's convert this argument to the new-style flags parameter for our internal
1869                  * use. */
1870                 int interactive;
1871
1872                 r = sd_bus_message_read(message, "b", &interactive);
1873                 if (r < 0)
1874                         return r;
1875
1876                 flags = interactive ? SD_LOGIND_INTERACTIVE : 0;
1877         }
1878
1879         if ((flags & SD_LOGIND_REBOOT_VIA_KEXEC) && kexec_loaded())
1880                 a = handle_action_lookup(HANDLE_KEXEC);
1881
1882         /* Don't allow multiple jobs being executed at the same time */
1883         if (m->delayed_action)
1884                 return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS,
1885                                          "There's already a shutdown or sleep operation in progress");
1886
1887         if (a->sleep_operation >= 0) {
1888                 r = can_sleep(a->sleep_operation);
1889                 if (r == -ENOSPC)
1890                         return sd_bus_error_set(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
1891                                                 "Not enough swap space for hibernation");
1892                 if (r == 0)
1893                         return sd_bus_error_setf(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
1894                                                  "Sleep verb \"%s\" not supported",
1895                                                  sleep_operation_to_string(a->sleep_operation));
1896                 if (r < 0)
1897                         return r;
1898         }
1899
1900         r = verify_shutdown_creds(m, message, a, flags, error);
1901         if (r != 0)
1902                 return r;
1903
1904         /* reset case we're shorting a scheduled shutdown */
1905         m->unlink_nologin = false;
1906         reset_scheduled_shutdown(m);
1907
1908         m->scheduled_shutdown_timeout = 0;
1909         m->scheduled_shutdown_action = a;
1910
1911         (void) setup_wall_message_timer(m, message);
1912
1913         r = bus_manager_shutdown_or_sleep_now_or_later(m, a, error);
1914         if (r < 0)
1915                 return r;
1916
1917         return sd_bus_reply_method_return(message, NULL);
1918 }
1919
1920 static int method_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1921         Manager *m = userdata;
1922
1923         return method_do_shutdown_or_sleep(
1924                         m, message,
1925                         handle_action_lookup(HANDLE_POWEROFF),
1926                         sd_bus_message_is_method_call(message, NULL, "PowerOffWithFlags"),
1927                         error);
1928 }
1929
1930 static int method_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1931         Manager *m = userdata;
1932
1933         return method_do_shutdown_or_sleep(
1934                         m, message,
1935                         handle_action_lookup(HANDLE_REBOOT),
1936                         sd_bus_message_is_method_call(message, NULL, "RebootWithFlags"),
1937                         error);
1938 }
1939
1940 static int method_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1941         Manager *m = userdata;
1942
1943         return method_do_shutdown_or_sleep(
1944                         m, message,
1945                         handle_action_lookup(HANDLE_HALT),
1946                         sd_bus_message_is_method_call(message, NULL, "HaltWithFlags"),
1947                         error);
1948 }
1949
1950 static int method_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1951         Manager *m = userdata;
1952
1953         return method_do_shutdown_or_sleep(
1954                         m, message,
1955                         handle_action_lookup(HANDLE_SUSPEND),
1956                         sd_bus_message_is_method_call(message, NULL, "SuspendWithFlags"),
1957                         error);
1958 }
1959
1960 static int method_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1961         Manager *m = userdata;
1962
1963         return method_do_shutdown_or_sleep(
1964                         m, message,
1965                         handle_action_lookup(HANDLE_HIBERNATE),
1966                         sd_bus_message_is_method_call(message, NULL, "HibernateWithFlags"),
1967                         error);
1968 }
1969
1970 static int method_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1971         Manager *m = userdata;
1972
1973         return method_do_shutdown_or_sleep(
1974                         m, message,
1975                         handle_action_lookup(HANDLE_HYBRID_SLEEP),
1976                         sd_bus_message_is_method_call(message, NULL, "HybridSleepWithFlags"),
1977                         error);
1978 }
1979
1980 static int method_suspend_then_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1981         Manager *m = userdata;
1982
1983         return method_do_shutdown_or_sleep(
1984                         m, message,
1985                         handle_action_lookup(HANDLE_SUSPEND_THEN_HIBERNATE),
1986                         sd_bus_message_is_method_call(message, NULL, "SuspendThenHibernateWithFlags"),
1987                         error);
1988 }
1989
1990 static int nologin_timeout_handler(
1991                         sd_event_source *s,
1992                         uint64_t usec,
1993                         void *userdata) {
1994
1995         Manager *m = userdata;
1996
1997         log_info("Creating /run/nologin, blocking further logins...");
1998
1999         m->unlink_nologin =
2000                 create_shutdown_run_nologin_or_warn() >= 0;
2001
2002         return 0;
2003 }
2004
2005 static usec_t nologin_timeout_usec(usec_t elapse) {
2006         /* Issue /run/nologin five minutes before shutdown */
2007         return LESS_BY(elapse, 5 * USEC_PER_MINUTE);
2008 }
2009
2010 void manager_load_scheduled_shutdown(Manager *m) {
2011         _cleanup_fclose_ FILE *f = NULL;
2012         _cleanup_free_ char *usec = NULL,
2013                *warn_wall = NULL,
2014                *mode = NULL,
2015                *wall_message = NULL,
2016                *uid = NULL,
2017                *tty = NULL;
2018         int r;
2019
2020         assert(m);
2021
2022         r = parse_env_file(f, SHUTDOWN_SCHEDULE_FILE,
2023                         "USEC", &usec,
2024                         "WARN_WALL", &warn_wall,
2025                         "MODE", &mode,
2026                         "WALL_MESSAGE", &wall_message,
2027                         "UID", &uid,
2028                         "TTY", &tty);
2029
2030         /* reset will delete the file */
2031         reset_scheduled_shutdown(m);
2032
2033         if (r == -ENOENT)
2034                 return;
2035         if (r < 0)
2036                 return (void) log_debug_errno(r, "Failed to parse " SHUTDOWN_SCHEDULE_FILE ": %m");
2037
2038         HandleAction handle = handle_action_from_string(mode);
2039         if (handle < 0)
2040                 return (void) log_debug_errno(SYNTHETIC_ERRNO(EINVAL), "Failed to parse scheduled shutdown type: %s", mode);
2041
2042         if (!usec)
2043                 return (void) log_debug_errno(SYNTHETIC_ERRNO(EINVAL), "USEC is required");
2044         if (deserialize_usec(usec, &m->scheduled_shutdown_timeout) < 0)
2045                 return;
2046
2047         /* assign parsed type only after we know usec is also valid */
2048         m->scheduled_shutdown_action = handle_action_lookup(handle);
2049
2050         if (warn_wall) {
2051                 r = parse_boolean(warn_wall);
2052                 if (r < 0)
2053                         log_debug_errno(r, "Failed to parse enabling wall messages");
2054                 else
2055                         m->enable_wall_messages = r;
2056         }
2057
2058         if (wall_message) {
2059                 _cleanup_free_ char *unescaped = NULL;
2060                 r = cunescape(wall_message, 0, &unescaped);
2061                 if (r < 0)
2062                         log_debug_errno(r, "Failed to parse wall message: %s", wall_message);
2063                 else
2064                         free_and_replace(m->wall_message, unescaped);
2065         }
2066
2067         if (uid) {
2068                 r = parse_uid(uid, &m->scheduled_shutdown_uid);
2069                 if (r < 0)
2070                         log_debug_errno(r, "Failed to parse wall uid: %s", uid);
2071         }
2072
2073         free_and_replace(m->scheduled_shutdown_tty, tty);
2074
2075         r = manager_setup_shutdown_timers(m);
2076         if (r < 0)
2077                 return reset_scheduled_shutdown(m);
2078
2079         (void) manager_setup_wall_message_timer(m);
2080         (void) update_schedule_file(m);
2081
2082         return;
2083 }
2084
2085 static int update_schedule_file(Manager *m) {
2086         _cleanup_free_ char *temp_path = NULL;
2087         _cleanup_fclose_ FILE *f = NULL;
2088         int r;
2089
2090         assert(m);
2091         assert(m->scheduled_shutdown_action);
2092
2093         r = mkdir_parents_label(SHUTDOWN_SCHEDULE_FILE, 0755);
2094         if (r < 0)
2095                 return log_error_errno(r, "Failed to create shutdown subdirectory: %m");
2096
2097         r = fopen_temporary(SHUTDOWN_SCHEDULE_FILE, &f, &temp_path);
2098         if (r < 0)
2099                 return log_error_errno(r, "Failed to save information about scheduled shutdowns: %m");
2100
2101         (void) fchmod(fileno(f), 0644);
2102
2103         serialize_usec(f, "USEC", m->scheduled_shutdown_timeout);
2104         serialize_item_format(f, "WARN_WALL", "%s", one_zero(m->enable_wall_messages));
2105         serialize_item_format(f, "MODE", "%s", handle_action_to_string(m->scheduled_shutdown_action->handle));
2106         serialize_item_format(f, "UID", UID_FMT, m->scheduled_shutdown_uid);
2107
2108         if (m->scheduled_shutdown_tty)
2109                 serialize_item_format(f, "TTY", "%s", m->scheduled_shutdown_tty);
2110
2111         if (!isempty(m->wall_message)) {
2112                 r = serialize_item_escaped(f, "WALL_MESSAGE", m->wall_message);
2113                 if (r < 0)
2114                         goto fail;
2115         }
2116
2117         r = fflush_and_check(f);
2118         if (r < 0)
2119                 goto fail;
2120
2121         if (rename(temp_path, SHUTDOWN_SCHEDULE_FILE) < 0) {
2122                 r = -errno;
2123                 goto fail;
2124         }
2125
2126         return 0;
2127
2128 fail:
2129         (void) unlink(temp_path);
2130         (void) unlink(SHUTDOWN_SCHEDULE_FILE);
2131
2132         return log_error_errno(r, "Failed to write information about scheduled shutdowns: %m");
2133 }
2134
2135 static void reset_scheduled_shutdown(Manager *m) {
2136         assert(m);
2137
2138         m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2139         m->wall_message_timeout_source = sd_event_source_unref(m->wall_message_timeout_source);
2140         m->nologin_timeout_source = sd_event_source_unref(m->nologin_timeout_source);
2141
2142         m->scheduled_shutdown_action = NULL;
2143         m->scheduled_shutdown_timeout = USEC_INFINITY;
2144         m->scheduled_shutdown_uid = UID_INVALID;
2145         m->scheduled_shutdown_tty = mfree(m->scheduled_shutdown_tty);
2146         m->wall_message = mfree(m->wall_message);
2147         m->shutdown_dry_run = false;
2148
2149         if (m->unlink_nologin) {
2150                 (void) unlink_or_warn("/run/nologin");
2151                 m->unlink_nologin = false;
2152         }
2153
2154         (void) unlink(SHUTDOWN_SCHEDULE_FILE);
2155 }
2156
2157 static int manager_scheduled_shutdown_handler(
2158                         sd_event_source *s,
2159                         uint64_t usec,
2160                         void *userdata) {
2161
2162         const HandleActionData *a = NULL;
2163         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
2164         Manager *m = ASSERT_PTR(userdata);
2165         int r;
2166
2167         a = m->scheduled_shutdown_action;
2168         assert(a);
2169
2170         /* Don't allow multiple jobs being executed at the same time */
2171         if (m->delayed_action) {
2172                 r = -EALREADY;
2173                 log_error("Scheduled shutdown to %s failed: shutdown or sleep operation already in progress", a->target);
2174                 goto error;
2175         }
2176
2177         if (m->shutdown_dry_run) {
2178                 /* We do not process delay inhibitors here.  Otherwise, we
2179                  * would have to be considered "in progress" (like the check
2180                  * above) for some seconds after our admin has seen the final
2181                  * wall message. */
2182
2183                 bus_manager_log_shutdown(m, a);
2184                 log_info("Running in dry run, suppressing action.");
2185                 reset_scheduled_shutdown(m);
2186
2187                 return 0;
2188         }
2189
2190         r = bus_manager_shutdown_or_sleep_now_or_later(m, m->scheduled_shutdown_action, &error);
2191         if (r < 0) {
2192                 log_error_errno(r, "Scheduled shutdown to %s failed: %m", a->target);
2193                 goto error;
2194         }
2195
2196         return 0;
2197
2198 error:
2199         reset_scheduled_shutdown(m);
2200         return r;
2201 }
2202
2203 static int method_schedule_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2204         Manager *m = ASSERT_PTR(userdata);
2205         HandleAction handle;
2206         const HandleActionData *a;
2207         uint64_t elapse;
2208         char *type;
2209         int r;
2210         bool dry_run = false;
2211
2212         assert(message);
2213
2214         r = sd_bus_message_read(message, "st", &type, &elapse);
2215         if (r < 0)
2216                 return r;
2217
2218         if (startswith(type, "dry-")) {
2219                 type += 4;
2220                 dry_run = true;
2221         }
2222
2223         handle = handle_action_from_string(type);
2224         if (!IN_SET(handle, HANDLE_POWEROFF, HANDLE_REBOOT, HANDLE_HALT, HANDLE_KEXEC))
2225                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Unsupported shutdown type");
2226
2227         a = handle_action_lookup(handle);
2228         assert(a);
2229         assert(a->polkit_action);
2230
2231         r = verify_shutdown_creds(m, message, a, 0, error);
2232         if (r != 0)
2233                 return r;
2234
2235         m->scheduled_shutdown_action = a;
2236         m->shutdown_dry_run = dry_run;
2237         m->scheduled_shutdown_timeout = elapse;
2238
2239         r = manager_setup_shutdown_timers(m);
2240         if (r < 0)
2241                 return r;
2242
2243         r = setup_wall_message_timer(m, message);
2244         if (r >= 0)
2245                 r = update_schedule_file(m);
2246
2247         if (r < 0) {
2248                 reset_scheduled_shutdown(m);
2249                 return r;
2250         }
2251
2252         return sd_bus_reply_method_return(message, NULL);
2253 }
2254
2255 static int manager_setup_shutdown_timers(Manager* m) {
2256         int r;
2257
2258         r = event_reset_time(m->event, &m->scheduled_shutdown_timeout_source,
2259                              CLOCK_REALTIME,
2260                              m->scheduled_shutdown_timeout, 0,
2261                              manager_scheduled_shutdown_handler, m,
2262                              0, "scheduled-shutdown-timeout", true);
2263         if (r < 0)
2264                 goto fail;
2265
2266         r = event_reset_time(m->event, &m->nologin_timeout_source,
2267                              CLOCK_REALTIME,
2268                              nologin_timeout_usec(m->scheduled_shutdown_timeout), 0,
2269                              nologin_timeout_handler, m,
2270                              0, "nologin-timeout", true);
2271         if (r < 0)
2272                 goto fail;
2273
2274         return 0;
2275
2276 fail:
2277         m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2278         m->nologin_timeout_source = sd_event_source_unref(m->nologin_timeout_source);
2279
2280         return r;
2281 }
2282
2283 static int method_cancel_scheduled_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2284         Manager *m = ASSERT_PTR(userdata);
2285         const HandleActionData *a;
2286         bool cancelled;
2287         int r;
2288
2289         assert(message);
2290
2291         cancelled = m->scheduled_shutdown_action
2292                 && !IN_SET(m->scheduled_shutdown_action->handle, HANDLE_IGNORE, _HANDLE_ACTION_INVALID);
2293         if (!cancelled)
2294                 return sd_bus_reply_method_return(message, "b", false);
2295
2296         a = m->scheduled_shutdown_action;
2297         if (!a->polkit_action)
2298                 return sd_bus_error_set(error, SD_BUS_ERROR_AUTH_FAILED, "Unsupported shutdown type");
2299
2300         r = bus_verify_polkit_async(
2301                         message,
2302                         CAP_SYS_BOOT,
2303                         a->polkit_action,
2304                         NULL,
2305                         false,
2306                         UID_INVALID,
2307                         &m->polkit_registry,
2308                         error);
2309         if (r < 0)
2310                 return r;
2311         if (r == 0)
2312                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2313
2314         if (m->enable_wall_messages) {
2315                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2316                 const char *tty = NULL;
2317                 uid_t uid = 0;
2318
2319                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
2320                 if (r >= 0) {
2321                         (void) sd_bus_creds_get_uid(creds, &uid);
2322                         (void) sd_bus_creds_get_tty(creds, &tty);
2323                 }
2324
2325                 _cleanup_free_ char *username = uid_to_name(uid);
2326
2327                 log_struct(LOG_INFO,
2328                            LOG_MESSAGE("System shutdown has been cancelled"),
2329                            "ACTION=%s", handle_action_to_string(a->handle),
2330                            "MESSAGE_ID=" SD_MESSAGE_SHUTDOWN_CANCELED_STR,
2331                            username ? "OPERATOR=%s" : NULL, username);
2332
2333                 utmp_wall("System shutdown has been cancelled",
2334                           username, tty, logind_wall_tty_filter, m);
2335         }
2336
2337         reset_scheduled_shutdown(m);
2338
2339         return sd_bus_reply_method_return(message, "b", true);
2340 }
2341
2342 static int method_can_shutdown_or_sleep(
2343                 Manager *m,
2344                 sd_bus_message *message,
2345                 const HandleActionData *a,
2346                 sd_bus_error *error) {
2347
2348         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2349         bool multiple_sessions, challenge, blocked;
2350         const char *result = NULL;
2351         uid_t uid;
2352         int r;
2353
2354         assert(m);
2355         assert(message);
2356         assert(a);
2357
2358         if (a->sleep_operation >= 0) {
2359                 r = can_sleep(a->sleep_operation);
2360                 if (IN_SET(r,  0, -ENOSPC))
2361                         return sd_bus_reply_method_return(message, "s", "na");
2362                 if (r < 0)
2363                         return r;
2364         }
2365
2366         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
2367         if (r < 0)
2368                 return r;
2369
2370         r = sd_bus_creds_get_euid(creds, &uid);
2371         if (r < 0)
2372                 return r;
2373
2374         r = have_multiple_sessions(m, uid);
2375         if (r < 0)
2376                 return r;
2377
2378         multiple_sessions = r > 0;
2379         blocked = manager_is_inhibited(m, a->inhibit_what, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
2380
2381         HandleAction handle = handle_action_from_string(sleep_operation_to_string(a->sleep_operation));
2382         if (handle >= 0) {
2383                 const char *target;
2384
2385                 target = handle_action_lookup(handle)->target;
2386                 if (target) {
2387                         _cleanup_free_ char *load_state = NULL;
2388
2389                         r = unit_load_state(m->bus, target, &load_state);
2390                         if (r < 0)
2391                                 return r;
2392
2393                         if (!streq(load_state, "loaded")) {
2394                                 result = "no";
2395                                 goto finish;
2396                         }
2397                 }
2398         }
2399
2400         if (multiple_sessions) {
2401                 r = bus_test_polkit(message, CAP_SYS_BOOT, a->polkit_action_multiple_sessions, NULL, UID_INVALID, &challenge, error);
2402                 if (r < 0)
2403                         return r;
2404
2405                 if (r > 0)
2406                         result = "yes";
2407                 else if (challenge)
2408                         result = "challenge";
2409                 else
2410                         result = "no";
2411         }
2412
2413         if (blocked) {
2414                 r = bus_test_polkit(message, CAP_SYS_BOOT, a->polkit_action_ignore_inhibit, NULL, UID_INVALID, &challenge, error);
2415                 if (r < 0)
2416                         return r;
2417
2418                 if (r > 0) {
2419                         if (!result)
2420                                 result = "yes";
2421                 } else if (challenge) {
2422                         if (!result || streq(result, "yes"))
2423                                 result = "challenge";
2424                 } else
2425                         result = "no";
2426         }
2427
2428         if (!multiple_sessions && !blocked) {
2429                 /* If neither inhibit nor multiple sessions
2430                  * apply then just check the normal policy */
2431
2432                 r = bus_test_polkit(message, CAP_SYS_BOOT, a->polkit_action, NULL, UID_INVALID, &challenge, error);
2433                 if (r < 0)
2434                         return r;
2435
2436                 if (r > 0)
2437                         result = "yes";
2438                 else if (challenge)
2439                         result = "challenge";
2440                 else
2441                         result = "no";
2442         }
2443
2444  finish:
2445         return sd_bus_reply_method_return(message, "s", result);
2446 }
2447
2448 static int method_can_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2449         Manager *m = userdata;
2450
2451         return method_can_shutdown_or_sleep(
2452                         m, message, handle_action_lookup(HANDLE_POWEROFF),
2453                         error);
2454 }
2455
2456 static int method_can_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2457         Manager *m = userdata;
2458
2459         return method_can_shutdown_or_sleep(
2460                         m, message, handle_action_lookup(HANDLE_REBOOT),
2461                         error);
2462 }
2463
2464 static int method_can_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2465         Manager *m = userdata;
2466
2467         return method_can_shutdown_or_sleep(
2468                         m, message, handle_action_lookup(HANDLE_HALT),
2469                         error);
2470 }
2471
2472 static int method_can_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2473         Manager *m = userdata;
2474
2475         return method_can_shutdown_or_sleep(
2476                         m, message, handle_action_lookup(HANDLE_SUSPEND),
2477                         error);
2478 }
2479
2480 static int method_can_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2481         Manager *m = userdata;
2482
2483         return method_can_shutdown_or_sleep(
2484                         m, message, handle_action_lookup(HANDLE_HIBERNATE),
2485                         error);
2486 }
2487
2488 static int method_can_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2489         Manager *m = userdata;
2490
2491         return method_can_shutdown_or_sleep(
2492                         m, message, handle_action_lookup(HANDLE_HYBRID_SLEEP),
2493                         error);
2494 }
2495
2496 static int method_can_suspend_then_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2497         Manager *m = userdata;
2498
2499         return method_can_shutdown_or_sleep(
2500                         m, message, handle_action_lookup(HANDLE_SUSPEND_THEN_HIBERNATE),
2501                         error);
2502 }
2503
2504 static int property_get_reboot_parameter(
2505                 sd_bus *bus,
2506                 const char *path,
2507                 const char *interface,
2508                 const char *property,
2509                 sd_bus_message *reply,
2510                 void *userdata,
2511                 sd_bus_error *error) {
2512         _cleanup_free_ char *parameter = NULL;
2513         int r;
2514
2515         assert(bus);
2516         assert(reply);
2517         assert(userdata);
2518
2519         r = read_reboot_parameter(&parameter);
2520         if (r < 0)
2521                 return r;
2522
2523         return sd_bus_message_append(reply, "s", parameter);
2524 }
2525
2526 static int method_set_reboot_parameter(
2527                 sd_bus_message *message,
2528                 void *userdata,
2529                 sd_bus_error *error) {
2530
2531         Manager *m = ASSERT_PTR(userdata);
2532         const char *arg;
2533         int r;
2534
2535         assert(message);
2536
2537         r = sd_bus_message_read(message, "s", &arg);
2538         if (r < 0)
2539                 return r;
2540
2541         r = detect_container();
2542         if (r < 0)
2543                 return r;
2544         if (r > 0)
2545                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED,
2546                                          "Reboot parameter not supported in containers, refusing.");
2547
2548         r = bus_verify_polkit_async(message,
2549                                     CAP_SYS_ADMIN,
2550                                     "org.freedesktop.login1.set-reboot-parameter",
2551                                     NULL,
2552                                     false,
2553                                     UID_INVALID,
2554                                     &m->polkit_registry,
2555                                     error);
2556         if (r < 0)
2557                 return r;
2558         if (r == 0)
2559                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2560
2561         r = update_reboot_parameter_and_warn(arg, false);
2562         if (r < 0)
2563                 return r;
2564
2565         return sd_bus_reply_method_return(message, NULL);
2566 }
2567
2568 static int method_can_reboot_parameter(
2569                 sd_bus_message *message,
2570                 void *userdata,
2571                 sd_bus_error *error) {
2572
2573         _unused_ Manager *m = ASSERT_PTR(userdata);
2574         int r;
2575
2576         assert(message);
2577
2578         r = detect_container();
2579         if (r < 0)
2580                 return r;
2581         if (r > 0) /* Inside containers, specifying a reboot parameter, doesn't make much sense */
2582                 return sd_bus_reply_method_return(message, "s", "na");
2583
2584         return return_test_polkit(
2585                         message,
2586                         CAP_SYS_ADMIN,
2587                         "org.freedesktop.login1.set-reboot-parameter",
2588                         NULL,
2589                         UID_INVALID,
2590                         error);
2591 }
2592
2593 static int property_get_reboot_to_firmware_setup(
2594                 sd_bus *bus,
2595                 const char *path,
2596                 const char *interface,
2597                 const char *property,
2598                 sd_bus_message *reply,
2599                 void *userdata,
2600                 sd_bus_error *error) {
2601         int r;
2602
2603         assert(bus);
2604         assert(reply);
2605         assert(userdata);
2606
2607         r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
2608         if (r == -ENXIO) {
2609                 /* EFI case: let's see what is currently configured in the EFI variables */
2610                 r = efi_get_reboot_to_firmware();
2611                 if (r < 0 && r != -EOPNOTSUPP)
2612                         log_warning_errno(r, "Failed to determine reboot-to-firmware-setup state: %m");
2613         } else if (r < 0)
2614                 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
2615         else if (r > 0) {
2616                 /* Non-EFI case: let's see whether /run/systemd/reboot-to-firmware-setup exists. */
2617                 if (access("/run/systemd/reboot-to-firmware-setup", F_OK) < 0) {
2618                         if (errno != ENOENT)
2619                                 log_warning_errno(errno, "Failed to check whether /run/systemd/reboot-to-firmware-setup exists: %m");
2620
2621                         r = false;
2622                 } else
2623                         r = true;
2624         }
2625
2626         return sd_bus_message_append(reply, "b", r > 0);
2627 }
2628
2629 static int method_set_reboot_to_firmware_setup(
2630                 sd_bus_message *message,
2631                 void *userdata,
2632                 sd_bus_error *error) {
2633
2634         Manager *m = ASSERT_PTR(userdata);
2635         bool use_efi;
2636         int b, r;
2637
2638         assert(message);
2639
2640         r = sd_bus_message_read(message, "b", &b);
2641         if (r < 0)
2642                 return r;
2643
2644         r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
2645         if (r == -ENXIO) {
2646                 /* EFI case: let's see what the firmware supports */
2647
2648                 r = efi_reboot_to_firmware_supported();
2649                 if (r == -EOPNOTSUPP)
2650                         return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Firmware does not support boot into firmware.");
2651                 if (r < 0)
2652                         return r;
2653
2654                 use_efi = true;
2655
2656         } else if (r <= 0) {
2657                 /* non-EFI case: $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP is set to off */
2658
2659                 if (r < 0)
2660                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
2661
2662                 return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Firmware does not support boot into firmware.");
2663         } else
2664                 /* non-EFI case: $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP is set to on */
2665                 use_efi = false;
2666
2667         r = bus_verify_polkit_async(message,
2668                                     CAP_SYS_ADMIN,
2669                                     "org.freedesktop.login1.set-reboot-to-firmware-setup",
2670                                     NULL,
2671                                     false,
2672                                     UID_INVALID,
2673                                     &m->polkit_registry,
2674                                     error);
2675         if (r < 0)
2676                 return r;
2677         if (r == 0)
2678                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2679
2680         if (use_efi) {
2681                 r = efi_set_reboot_to_firmware(b);
2682                 if (r < 0)
2683                         return r;
2684         } else {
2685                 if (b) {
2686                         r = touch("/run/systemd/reboot-to-firmware-setup");
2687                         if (r < 0)
2688                                 return r;
2689                 } else {
2690                         if (unlink("/run/systemd/reboot-to-firmware-setup") < 0 && errno != ENOENT)
2691                                 return -errno;
2692                 }
2693         }
2694
2695         return sd_bus_reply_method_return(message, NULL);
2696 }
2697
2698 static int method_can_reboot_to_firmware_setup(
2699                 sd_bus_message *message,
2700                 void *userdata,
2701                 sd_bus_error *error) {
2702
2703         _unused_ Manager *m = ASSERT_PTR(userdata);
2704         int r;
2705
2706         assert(message);
2707
2708         r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
2709         if (r == -ENXIO) {
2710                 /* EFI case: let's see what the firmware supports */
2711
2712                 r = efi_reboot_to_firmware_supported();
2713                 if (r < 0) {
2714                         if (r != -EOPNOTSUPP)
2715                                 log_warning_errno(r, "Failed to determine whether reboot to firmware is supported: %m");
2716
2717                         return sd_bus_reply_method_return(message, "s", "na");
2718                 }
2719
2720         } else if (r <= 0) {
2721                 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP */
2722
2723                 if (r < 0)
2724                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
2725
2726                 return sd_bus_reply_method_return(message, "s", "na");
2727         }
2728
2729         return return_test_polkit(
2730                         message,
2731                         CAP_SYS_ADMIN,
2732                         "org.freedesktop.login1.set-reboot-to-firmware-setup",
2733                         NULL,
2734                         UID_INVALID,
2735                         error);
2736 }
2737
2738 static int property_get_reboot_to_boot_loader_menu(
2739                 sd_bus *bus,
2740                 const char *path,
2741                 const char *interface,
2742                 const char *property,
2743                 sd_bus_message *reply,
2744                 void *userdata,
2745                 sd_bus_error *error) {
2746
2747         uint64_t x = UINT64_MAX;
2748         int r;
2749
2750         assert(bus);
2751         assert(reply);
2752         assert(userdata);
2753
2754         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
2755         if (r == -ENXIO) {
2756                 /* EFI case: returns the current value of LoaderConfigTimeoutOneShot. Three cases are distinguished:
2757                  *
2758                  *     1. Variable not set, boot into boot loader menu is not enabled (we return UINT64_MAX to the user)
2759                  *     2. Variable set to "0", boot into boot loader menu is enabled with no timeout (we return 0 to the user)
2760                  *     3. Variable set to numeric value formatted in ASCII, boot into boot loader menu with the specified timeout in seconds
2761                  */
2762
2763                 r = efi_loader_get_config_timeout_one_shot(&x);
2764                 if (r < 0) {
2765                         if (r != -ENOENT)
2766                                 log_warning_errno(r, "Failed to read LoaderConfigTimeoutOneShot variable, ignoring: %m");
2767                 }
2768
2769         } else if (r < 0)
2770                 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
2771         else if (r > 0) {
2772                 _cleanup_free_ char *v = NULL;
2773
2774                 /* Non-EFI case, let's process /run/systemd/reboot-to-boot-loader-menu. */
2775
2776                 r = read_one_line_file("/run/systemd/reboot-to-boot-loader-menu", &v);
2777                 if (r < 0) {
2778                         if (r != -ENOENT)
2779                                 log_warning_errno(r, "Failed to read /run/systemd/reboot-to-boot-loader-menu: %m");
2780                 } else {
2781                         r = safe_atou64(v, &x);
2782                         if (r < 0)
2783                                 log_warning_errno(r, "Failed to parse /run/systemd/reboot-to-boot-loader-menu: %m");
2784                 }
2785         }
2786
2787         return sd_bus_message_append(reply, "t", x);
2788 }
2789
2790 static int method_set_reboot_to_boot_loader_menu(
2791                 sd_bus_message *message,
2792                 void *userdata,
2793                 sd_bus_error *error) {
2794
2795         Manager *m = ASSERT_PTR(userdata);
2796         bool use_efi;
2797         uint64_t x;
2798         int r;
2799
2800         assert(message);
2801
2802         r = sd_bus_message_read(message, "t", &x);
2803         if (r < 0)
2804                 return r;
2805
2806         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
2807         if (r == -ENXIO) {
2808                 uint64_t features;
2809
2810                 /* EFI case: let's see if booting into boot loader menu is supported. */
2811
2812                 r = efi_loader_get_features(&features);
2813                 if (r < 0)
2814                         log_warning_errno(r, "Failed to determine whether reboot to boot loader menu is supported: %m");
2815                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT))
2816                         return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader does not support boot into boot loader menu.");
2817
2818                 use_efi = true;
2819
2820         } else if (r <= 0) {
2821                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU is set to off */
2822
2823                 if (r < 0)
2824                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
2825
2826                 return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader does not support boot into boot loader menu.");
2827         } else
2828                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU is set to on */
2829                 use_efi = false;
2830
2831         r = bus_verify_polkit_async(message,
2832                                     CAP_SYS_ADMIN,
2833                                     "org.freedesktop.login1.set-reboot-to-boot-loader-menu",
2834                                     NULL,
2835                                     false,
2836                                     UID_INVALID,
2837                                     &m->polkit_registry,
2838                                     error);
2839         if (r < 0)
2840                 return r;
2841         if (r == 0)
2842                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2843
2844         if (use_efi) {
2845                 if (x == UINT64_MAX)
2846                         r = efi_set_variable(EFI_LOADER_VARIABLE(LoaderConfigTimeoutOneShot), NULL, 0);
2847                 else {
2848                         char buf[DECIMAL_STR_MAX(uint64_t) + 1];
2849                         xsprintf(buf, "%" PRIu64, DIV_ROUND_UP(x, USEC_PER_SEC)); /* second granularity */
2850
2851                         r = efi_set_variable_string(EFI_LOADER_VARIABLE(LoaderConfigTimeoutOneShot), buf);
2852                 }
2853                 if (r < 0)
2854                         return r;
2855         } else {
2856                 if (x == UINT64_MAX) {
2857                         if (unlink("/run/systemd/reboot-to-boot-loader-menu") < 0 && errno != ENOENT)
2858                                 return -errno;
2859                 } else {
2860                         char buf[DECIMAL_STR_MAX(uint64_t) + 1];
2861
2862                         xsprintf(buf, "%" PRIu64, x); /* µs granularity */
2863
2864                         r = write_string_file_atomic_label("/run/systemd/reboot-to-boot-loader-menu", buf);
2865                         if (r < 0)
2866                                 return r;
2867                 }
2868         }
2869
2870         return sd_bus_reply_method_return(message, NULL);
2871 }
2872
2873 static int method_can_reboot_to_boot_loader_menu(
2874                 sd_bus_message *message,
2875                 void *userdata,
2876                 sd_bus_error *error) {
2877
2878         _unused_ Manager *m = ASSERT_PTR(userdata);
2879         int r;
2880
2881         assert(message);
2882
2883         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
2884         if (r == -ENXIO) {
2885                 uint64_t features = 0;
2886
2887                 /* EFI case, let's see if booting into boot loader menu is supported. */
2888
2889                 r = efi_loader_get_features(&features);
2890                 if (r < 0)
2891                         log_warning_errno(r, "Failed to determine whether reboot to boot loader menu is supported: %m");
2892                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT))
2893                         return sd_bus_reply_method_return(message, "s", "na");
2894
2895         } else if (r <= 0) {
2896                 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU */
2897
2898                 if (r < 0)
2899                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
2900
2901                 return sd_bus_reply_method_return(message, "s", "na");
2902         }
2903
2904         return return_test_polkit(
2905                         message,
2906                         CAP_SYS_ADMIN,
2907                         "org.freedesktop.login1.set-reboot-to-boot-loader-menu",
2908                         NULL,
2909                         UID_INVALID,
2910                         error);
2911 }
2912
2913 static int property_get_reboot_to_boot_loader_entry(
2914                 sd_bus *bus,
2915                 const char *path,
2916                 const char *interface,
2917                 const char *property,
2918                 sd_bus_message *reply,
2919                 void *userdata,
2920                 sd_bus_error *error) {
2921
2922         _cleanup_free_ char *v = NULL;
2923         Manager *m = ASSERT_PTR(userdata);
2924         const char *x = NULL;
2925         int r;
2926
2927         assert(bus);
2928         assert(reply);
2929
2930         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
2931         if (r == -ENXIO) {
2932                 /* EFI case: let's read the LoaderEntryOneShot variable */
2933
2934                 r = efi_loader_update_entry_one_shot_cache(&m->efi_loader_entry_one_shot, &m->efi_loader_entry_one_shot_stat);
2935                 if (r < 0) {
2936                         if (r != -ENOENT)
2937                                 log_warning_errno(r, "Failed to read LoaderEntryOneShot variable, ignoring: %m");
2938                 } else
2939                         x = m->efi_loader_entry_one_shot;
2940
2941         } else if (r < 0)
2942                 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
2943         else if (r > 0) {
2944
2945                 /* Non-EFI case, let's process /run/systemd/reboot-to-boot-loader-entry. */
2946
2947                 r = read_one_line_file("/run/systemd/reboot-to-boot-loader-entry", &v);
2948                 if (r < 0) {
2949                         if (r != -ENOENT)
2950                                 log_warning_errno(r, "Failed to read /run/systemd/reboot-to-boot-loader-entry, ignoring: %m");
2951                 } else if (!efi_loader_entry_name_valid(v))
2952                         log_warning("/run/systemd/reboot-to-boot-loader-entry is not valid, ignoring.");
2953                 else
2954                         x = v;
2955         }
2956
2957         return sd_bus_message_append(reply, "s", x);
2958 }
2959
2960 static int boot_loader_entry_exists(Manager *m, const char *id) {
2961         _cleanup_(boot_config_free) BootConfig config = BOOT_CONFIG_NULL;
2962         int r;
2963
2964         assert(m);
2965         assert(id);
2966
2967         r = boot_config_load_auto(&config, NULL, NULL);
2968         if (r < 0 && r != -ENOKEY) /* don't complain if no GPT is found, hence skip ENOKEY */
2969                 return r;
2970
2971         r = manager_read_efi_boot_loader_entries(m);
2972         if (r >= 0)
2973                 (void) boot_config_augment_from_loader(&config, m->efi_boot_loader_entries, /* auto_only= */ true);
2974
2975         return !!boot_config_find_entry(&config, id);
2976 }
2977
2978 static int method_set_reboot_to_boot_loader_entry(
2979                 sd_bus_message *message,
2980                 void *userdata,
2981                 sd_bus_error *error) {
2982
2983         Manager *m = ASSERT_PTR(userdata);
2984         bool use_efi;
2985         const char *v;
2986         int r;
2987
2988         assert(message);
2989
2990         r = sd_bus_message_read(message, "s", &v);
2991         if (r < 0)
2992                 return r;
2993
2994         if (isempty(v))
2995                 v = NULL;
2996         else if (efi_loader_entry_name_valid(v)) {
2997                 r = boot_loader_entry_exists(m, v);
2998                 if (r < 0)
2999                         return r;
3000                 if (r == 0)
3001                         return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader entry '%s' is not known.", v);
3002         } else
3003                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Boot loader entry name '%s' is not valid, refusing.", v);
3004
3005         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
3006         if (r == -ENXIO) {
3007                 uint64_t features;
3008
3009                 /* EFI case: let's see if booting into boot loader entry is supported. */
3010
3011                 r = efi_loader_get_features(&features);
3012                 if (r < 0)
3013                         log_warning_errno(r, "Failed to determine whether reboot into boot loader entry is supported: %m");
3014                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_ENTRY_ONESHOT))
3015                         return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Loader does not support boot into boot loader entry.");
3016
3017                 use_efi = true;
3018
3019         } else if (r <= 0) {
3020                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY is set to off */
3021
3022                 if (r < 0)
3023                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
3024
3025                 return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Loader does not support boot into boot loader entry.");
3026         } else
3027                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY is set to on */
3028                 use_efi = false;
3029
3030         r = bus_verify_polkit_async(message,
3031                                     CAP_SYS_ADMIN,
3032                                     "org.freedesktop.login1.set-reboot-to-boot-loader-entry",
3033                                     NULL,
3034                                     false,
3035                                     UID_INVALID,
3036                                     &m->polkit_registry,
3037                                     error);
3038         if (r < 0)
3039                 return r;
3040         if (r == 0)
3041                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
3042
3043         if (use_efi) {
3044                 if (isempty(v))
3045                         /* Delete item */
3046                         r = efi_set_variable(EFI_LOADER_VARIABLE(LoaderEntryOneShot), NULL, 0);
3047                 else
3048                         r = efi_set_variable_string(EFI_LOADER_VARIABLE(LoaderEntryOneShot), v);
3049                 if (r < 0)
3050                         return r;
3051         } else {
3052                 if (isempty(v)) {
3053                         if (unlink("/run/systemd/reboot-to-boot-loader-entry") < 0 && errno != ENOENT)
3054                                 return -errno;
3055                 } else {
3056                         r = write_string_file_atomic_label("/run/systemd/reboot-boot-to-loader-entry", v);
3057                         if (r < 0)
3058                                 return r;
3059                 }
3060         }
3061
3062         return sd_bus_reply_method_return(message, NULL);
3063 }
3064
3065 static int method_can_reboot_to_boot_loader_entry(
3066                 sd_bus_message *message,
3067                 void *userdata,
3068                 sd_bus_error *error) {
3069
3070         _unused_ Manager *m = ASSERT_PTR(userdata);
3071         int r;
3072
3073         assert(message);
3074
3075         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
3076         if (r == -ENXIO) {
3077                 uint64_t features = 0;
3078
3079                 /* EFI case, let's see if booting into boot loader entry is supported. */
3080
3081                 r = efi_loader_get_features(&features);
3082                 if (r < 0)
3083                         log_warning_errno(r, "Failed to determine whether reboot to boot loader entry is supported: %m");
3084                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_ENTRY_ONESHOT))
3085                         return sd_bus_reply_method_return(message, "s", "na");
3086
3087         } else if (r <= 0) {
3088                 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY */
3089
3090                 if (r < 0)
3091                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
3092
3093                 return sd_bus_reply_method_return(message, "s", "na");
3094         }
3095
3096         return return_test_polkit(
3097                         message,
3098                         CAP_SYS_ADMIN,
3099                         "org.freedesktop.login1.set-reboot-to-boot-loader-entry",
3100                         NULL,
3101                         UID_INVALID,
3102                         error);
3103 }
3104
3105 static int property_get_boot_loader_entries(
3106                 sd_bus *bus,
3107                 const char *path,
3108                 const char *interface,
3109                 const char *property,
3110                 sd_bus_message *reply,
3111                 void *userdata,
3112                 sd_bus_error *error) {
3113
3114         _cleanup_(boot_config_free) BootConfig config = BOOT_CONFIG_NULL;
3115         Manager *m = ASSERT_PTR(userdata);
3116         size_t i;
3117         int r;
3118
3119         assert(bus);
3120         assert(reply);
3121
3122         r = boot_config_load_auto(&config, NULL, NULL);
3123         if (r < 0 && r != -ENOKEY) /* don't complain if there's no GPT found */
3124                 return r;
3125
3126         r = manager_read_efi_boot_loader_entries(m);
3127         if (r >= 0)
3128                 (void) boot_config_augment_from_loader(&config, m->efi_boot_loader_entries, /* auto_only= */ true);
3129
3130         r = sd_bus_message_open_container(reply, 'a', "s");
3131         if (r < 0)
3132                 return r;
3133
3134         for (i = 0; i < config.n_entries; i++) {
3135                 BootEntry *e = config.entries + i;
3136
3137                 r = sd_bus_message_append(reply, "s", e->id);
3138                 if (r < 0)
3139                         return r;
3140         }
3141
3142         return sd_bus_message_close_container(reply);
3143 }
3144
3145 static int method_set_wall_message(
3146                 sd_bus_message *message,
3147                 void *userdata,
3148                 sd_bus_error *error) {
3149
3150         int r;
3151         Manager *m = ASSERT_PTR(userdata);
3152         char *wall_message;
3153         int enable_wall_messages;
3154
3155         assert(message);
3156
3157         r = sd_bus_message_read(message, "sb", &wall_message, &enable_wall_messages);
3158         if (r < 0)
3159                 return r;
3160
3161         if (strlen(wall_message) > WALL_MESSAGE_MAX)
3162                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3163                         "Wall message too long, maximum permitted length is %u characters.",
3164                         WALL_MESSAGE_MAX);
3165
3166         /* Short-circuit the operation if the desired state is already in place, to
3167          * avoid an unnecessary polkit permission check. */
3168         if (streq_ptr(m->wall_message, empty_to_null(wall_message)) &&
3169             m->enable_wall_messages == enable_wall_messages)
3170                 goto done;
3171
3172         r = bus_verify_polkit_async(message,
3173                                     CAP_SYS_ADMIN,
3174                                     "org.freedesktop.login1.set-wall-message",
3175                                     NULL,
3176                                     false,
3177                                     UID_INVALID,
3178                                     &m->polkit_registry,
3179                                     error);
3180         if (r < 0)
3181                 return r;
3182         if (r == 0)
3183                 return 1; /* Will call us back */
3184
3185         r = free_and_strdup(&m->wall_message, empty_to_null(wall_message));
3186         if (r < 0)
3187                 return log_oom();
3188
3189         m->enable_wall_messages = enable_wall_messages;
3190
3191  done:
3192         return sd_bus_reply_method_return(message, NULL);
3193 }
3194
3195 static int method_inhibit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3196         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
3197         const char *who, *why, *what, *mode;
3198         _cleanup_free_ char *id = NULL;
3199         _cleanup_close_ int fifo_fd = -1;
3200         Manager *m = ASSERT_PTR(userdata);
3201         InhibitMode mm;
3202         InhibitWhat w;
3203         pid_t pid;
3204         uid_t uid;
3205         int r;
3206
3207         assert(message);
3208
3209         r = sd_bus_message_read(message, "ssss", &what, &who, &why, &mode);
3210         if (r < 0)
3211                 return r;
3212
3213         w = inhibit_what_from_string(what);
3214         if (w <= 0)
3215                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3216                                          "Invalid what specification %s", what);
3217
3218         mm = inhibit_mode_from_string(mode);
3219         if (mm < 0)
3220                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3221                                          "Invalid mode specification %s", mode);
3222
3223         /* Delay is only supported for shutdown/sleep */
3224         if (mm == INHIBIT_DELAY && (w & ~(INHIBIT_SHUTDOWN|INHIBIT_SLEEP)))
3225                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3226                                          "Delay inhibitors only supported for shutdown and sleep");
3227
3228         /* Don't allow taking delay locks while we are already
3229          * executing the operation. We shouldn't create the impression
3230          * that the lock was successful if the machine is about to go
3231          * down/suspend any moment. */
3232         if (m->delayed_action && m->delayed_action->inhibit_what & w)
3233                 return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS,
3234                                          "The operation inhibition has been requested for is already running");
3235
3236         r = bus_verify_polkit_async(
3237                         message,
3238                         CAP_SYS_BOOT,
3239                         w == INHIBIT_SHUTDOWN             ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-shutdown" : "org.freedesktop.login1.inhibit-delay-shutdown") :
3240                         w == INHIBIT_SLEEP                ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-sleep"    : "org.freedesktop.login1.inhibit-delay-sleep") :
3241                         w == INHIBIT_IDLE                 ? "org.freedesktop.login1.inhibit-block-idle" :
3242                         w == INHIBIT_HANDLE_POWER_KEY     ? "org.freedesktop.login1.inhibit-handle-power-key" :
3243                         w == INHIBIT_HANDLE_SUSPEND_KEY   ? "org.freedesktop.login1.inhibit-handle-suspend-key" :
3244                         w == INHIBIT_HANDLE_REBOOT_KEY    ? "org.freedesktop.login1.inhibit-handle-reboot-key" :
3245                         w == INHIBIT_HANDLE_HIBERNATE_KEY ? "org.freedesktop.login1.inhibit-handle-hibernate-key" :
3246                                                             "org.freedesktop.login1.inhibit-handle-lid-switch",
3247                         NULL,
3248                         false,
3249                         UID_INVALID,
3250                         &m->polkit_registry,
3251                         error);
3252         if (r < 0)
3253                 return r;
3254         if (r == 0)
3255                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
3256
3257         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID|SD_BUS_CREDS_PID, &creds);
3258         if (r < 0)
3259                 return r;
3260
3261         r = sd_bus_creds_get_euid(creds, &uid);
3262         if (r < 0)
3263                 return r;
3264
3265         r = sd_bus_creds_get_pid(creds, &pid);
3266         if (r < 0)
3267                 return r;
3268
3269         if (hashmap_size(m->inhibitors) >= m->inhibitors_max)
3270                 return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED,
3271                                          "Maximum number of inhibitors (%" PRIu64 ") reached, refusing further inhibitors.",
3272                                          m->inhibitors_max);
3273
3274         do {
3275                 id = mfree(id);
3276
3277                 if (asprintf(&id, "%lu", ++m->inhibit_counter) < 0)
3278                         return -ENOMEM;
3279
3280         } while (hashmap_get(m->inhibitors, id));
3281
3282         _cleanup_(inhibitor_freep) Inhibitor *i = NULL;
3283         r = manager_add_inhibitor(m, id, &i);
3284         if (r < 0)
3285                 return r;
3286
3287         i->what = w;
3288         i->mode = mm;
3289         i->pid = pid;
3290         i->uid = uid;
3291         i->why = strdup(why);
3292         i->who = strdup(who);
3293
3294         if (!i->why || !i->who)
3295                 return -ENOMEM;
3296
3297         fifo_fd = inhibitor_create_fifo(i);
3298         if (fifo_fd < 0)
3299                 return fifo_fd;
3300
3301         r = inhibitor_start(i);
3302         if (r < 0)
3303                 return r;
3304         TAKE_PTR(i);
3305
3306         return sd_bus_reply_method_return(message, "h", fifo_fd);
3307 }
3308
3309 static const sd_bus_vtable manager_vtable[] = {
3310         SD_BUS_VTABLE_START(0),
3311
3312         SD_BUS_WRITABLE_PROPERTY("EnableWallMessages", "b", bus_property_get_bool, bus_property_set_bool, offsetof(Manager, enable_wall_messages), 0),
3313         SD_BUS_WRITABLE_PROPERTY("WallMessage", "s", NULL, NULL, offsetof(Manager, wall_message), 0),
3314
3315         SD_BUS_PROPERTY("NAutoVTs", "u", NULL, offsetof(Manager, n_autovts), SD_BUS_VTABLE_PROPERTY_CONST),
3316         SD_BUS_PROPERTY("KillOnlyUsers", "as", NULL, offsetof(Manager, kill_only_users), SD_BUS_VTABLE_PROPERTY_CONST),
3317         SD_BUS_PROPERTY("KillExcludeUsers", "as", NULL, offsetof(Manager, kill_exclude_users), SD_BUS_VTABLE_PROPERTY_CONST),
3318         SD_BUS_PROPERTY("KillUserProcesses", "b", bus_property_get_bool, offsetof(Manager, kill_user_processes), SD_BUS_VTABLE_PROPERTY_CONST),
3319         SD_BUS_PROPERTY("RebootParameter", "s", property_get_reboot_parameter, 0, 0),
3320         SD_BUS_PROPERTY("RebootToFirmwareSetup", "b", property_get_reboot_to_firmware_setup, 0, 0),
3321         SD_BUS_PROPERTY("RebootToBootLoaderMenu", "t", property_get_reboot_to_boot_loader_menu, 0, 0),
3322         SD_BUS_PROPERTY("RebootToBootLoaderEntry", "s", property_get_reboot_to_boot_loader_entry, 0, 0),
3323         SD_BUS_PROPERTY("BootLoaderEntries", "as", property_get_boot_loader_entries, 0, SD_BUS_VTABLE_PROPERTY_CONST),
3324         SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3325         SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3326         SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3327         SD_BUS_PROPERTY("BlockInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3328         SD_BUS_PROPERTY("DelayInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3329         SD_BUS_PROPERTY("InhibitDelayMaxUSec", "t", NULL, offsetof(Manager, inhibit_delay_max), SD_BUS_VTABLE_PROPERTY_CONST),
3330         SD_BUS_PROPERTY("UserStopDelayUSec", "t", NULL, offsetof(Manager, user_stop_delay), SD_BUS_VTABLE_PROPERTY_CONST),
3331         SD_BUS_PROPERTY("HandlePowerKey", "s", property_get_handle_action, offsetof(Manager, handle_power_key), SD_BUS_VTABLE_PROPERTY_CONST),
3332         SD_BUS_PROPERTY("HandlePowerKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_power_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3333         SD_BUS_PROPERTY("HandleRebootKey", "s", property_get_handle_action, offsetof(Manager, handle_reboot_key), SD_BUS_VTABLE_PROPERTY_CONST),
3334         SD_BUS_PROPERTY("HandleRebootKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_reboot_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3335         SD_BUS_PROPERTY("HandleSuspendKey", "s", property_get_handle_action, offsetof(Manager, handle_suspend_key), SD_BUS_VTABLE_PROPERTY_CONST),
3336         SD_BUS_PROPERTY("HandleSuspendKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_suspend_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3337         SD_BUS_PROPERTY("HandleHibernateKey", "s", property_get_handle_action, offsetof(Manager, handle_hibernate_key), SD_BUS_VTABLE_PROPERTY_CONST),
3338         SD_BUS_PROPERTY("HandleHibernateKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_hibernate_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3339         SD_BUS_PROPERTY("HandleLidSwitch", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch), SD_BUS_VTABLE_PROPERTY_CONST),
3340         SD_BUS_PROPERTY("HandleLidSwitchExternalPower", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch_ep), SD_BUS_VTABLE_PROPERTY_CONST),
3341         SD_BUS_PROPERTY("HandleLidSwitchDocked", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch_docked), SD_BUS_VTABLE_PROPERTY_CONST),
3342         SD_BUS_PROPERTY("HoldoffTimeoutUSec", "t", NULL, offsetof(Manager, holdoff_timeout_usec), SD_BUS_VTABLE_PROPERTY_CONST),
3343         SD_BUS_PROPERTY("IdleAction", "s", property_get_handle_action, offsetof(Manager, idle_action), SD_BUS_VTABLE_PROPERTY_CONST),
3344         SD_BUS_PROPERTY("IdleActionUSec", "t", NULL, offsetof(Manager, idle_action_usec), SD_BUS_VTABLE_PROPERTY_CONST),
3345         SD_BUS_PROPERTY("PreparingForShutdown", "b", property_get_preparing, 0, 0),
3346         SD_BUS_PROPERTY("PreparingForSleep", "b", property_get_preparing, 0, 0),
3347         SD_BUS_PROPERTY("ScheduledShutdown", "(st)", property_get_scheduled_shutdown, 0, 0),
3348         SD_BUS_PROPERTY("Docked", "b", property_get_docked, 0, 0),
3349         SD_BUS_PROPERTY("LidClosed", "b", property_get_lid_closed, 0, 0),
3350         SD_BUS_PROPERTY("OnExternalPower", "b", property_get_on_external_power, 0, 0),
3351         SD_BUS_PROPERTY("RemoveIPC", "b", bus_property_get_bool, offsetof(Manager, remove_ipc), SD_BUS_VTABLE_PROPERTY_CONST),
3352         SD_BUS_PROPERTY("RuntimeDirectorySize", "t", NULL, offsetof(Manager, runtime_dir_size), SD_BUS_VTABLE_PROPERTY_CONST),
3353         SD_BUS_PROPERTY("RuntimeDirectoryInodesMax", "t", NULL, offsetof(Manager, runtime_dir_inodes), SD_BUS_VTABLE_PROPERTY_CONST),
3354         SD_BUS_PROPERTY("InhibitorsMax", "t", NULL, offsetof(Manager, inhibitors_max), SD_BUS_VTABLE_PROPERTY_CONST),
3355         SD_BUS_PROPERTY("NCurrentInhibitors", "t", property_get_hashmap_size, offsetof(Manager, inhibitors), 0),
3356         SD_BUS_PROPERTY("SessionsMax", "t", NULL, offsetof(Manager, sessions_max), SD_BUS_VTABLE_PROPERTY_CONST),
3357         SD_BUS_PROPERTY("NCurrentSessions", "t", property_get_hashmap_size, offsetof(Manager, sessions), 0),
3358         SD_BUS_PROPERTY("UserTasksMax", "t", property_get_compat_user_tasks_max, 0, SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
3359         SD_BUS_PROPERTY("StopIdleSessionUSec", "t", NULL, offsetof(Manager, stop_idle_session_usec), SD_BUS_VTABLE_PROPERTY_CONST),
3360
3361         SD_BUS_METHOD_WITH_ARGS("GetSession",
3362                                 SD_BUS_ARGS("s", session_id),
3363                                 SD_BUS_RESULT("o", object_path),
3364                                 method_get_session,
3365                                 SD_BUS_VTABLE_UNPRIVILEGED),
3366         SD_BUS_METHOD_WITH_ARGS("GetSessionByPID",
3367                                 SD_BUS_ARGS("u", pid),
3368                                 SD_BUS_RESULT("o", object_path),
3369                                 method_get_session_by_pid,
3370                                 SD_BUS_VTABLE_UNPRIVILEGED),
3371         SD_BUS_METHOD_WITH_ARGS("GetUser",
3372                                 SD_BUS_ARGS("u", uid),
3373                                 SD_BUS_RESULT("o", object_path),
3374                                 method_get_user,
3375                                 SD_BUS_VTABLE_UNPRIVILEGED),
3376         SD_BUS_METHOD_WITH_ARGS("GetUserByPID",
3377                                 SD_BUS_ARGS("u", pid),
3378                                 SD_BUS_RESULT("o", object_path),
3379                                 method_get_user_by_pid,
3380                                 SD_BUS_VTABLE_UNPRIVILEGED),
3381         SD_BUS_METHOD_WITH_ARGS("GetSeat",
3382                                 SD_BUS_ARGS("s", seat_id),
3383                                 SD_BUS_RESULT("o", object_path),
3384                                 method_get_seat,
3385                                 SD_BUS_VTABLE_UNPRIVILEGED),
3386         SD_BUS_METHOD_WITH_ARGS("ListSessions",
3387                                 SD_BUS_NO_ARGS,
3388                                 SD_BUS_RESULT("a(susso)", sessions),
3389                                 method_list_sessions,
3390                                 SD_BUS_VTABLE_UNPRIVILEGED),
3391         SD_BUS_METHOD_WITH_ARGS("ListUsers",
3392                                 SD_BUS_NO_ARGS,
3393                                 SD_BUS_RESULT("a(uso)", users),
3394                                 method_list_users,
3395                                 SD_BUS_VTABLE_UNPRIVILEGED),
3396         SD_BUS_METHOD_WITH_ARGS("ListSeats",
3397                                 SD_BUS_NO_ARGS,
3398                                 SD_BUS_RESULT("a(so)", seats),
3399                                 method_list_seats,
3400                                 SD_BUS_VTABLE_UNPRIVILEGED),
3401         SD_BUS_METHOD_WITH_ARGS("ListInhibitors",
3402                                 SD_BUS_NO_ARGS,
3403                                 SD_BUS_RESULT("a(ssssuu)", inhibitors),
3404                                 method_list_inhibitors,
3405                                 SD_BUS_VTABLE_UNPRIVILEGED),
3406         SD_BUS_METHOD_WITH_ARGS("CreateSession",
3407                                 SD_BUS_ARGS("u", uid,
3408                                             "u", pid,
3409                                             "s", service,
3410                                             "s", type,
3411                                             "s", class,
3412                                             "s", desktop,
3413                                             "s", seat_id,
3414                                             "u", vtnr,
3415                                             "s", tty,
3416                                             "s", display,
3417                                             "b", remote,
3418                                             "s", remote_user,
3419                                             "s", remote_host,
3420                                             "a(sv)", properties),
3421                                 SD_BUS_RESULT("s", session_id,
3422                                               "o", object_path,
3423                                               "s", runtime_path,
3424                                               "h", fifo_fd,
3425                                               "u", uid,
3426                                               "s", seat_id,
3427                                               "u", vtnr,
3428                                               "b", existing),
3429                                 method_create_session,
3430                                 0),
3431         SD_BUS_METHOD_WITH_ARGS("ReleaseSession",
3432                                 SD_BUS_ARGS("s", session_id),
3433                                 SD_BUS_NO_RESULT,
3434                                 method_release_session,
3435                                 0),
3436         SD_BUS_METHOD_WITH_ARGS("ActivateSession",
3437                                 SD_BUS_ARGS("s", session_id),
3438                                 SD_BUS_NO_RESULT,
3439                                 method_activate_session,
3440                                 SD_BUS_VTABLE_UNPRIVILEGED),
3441         SD_BUS_METHOD_WITH_ARGS("ActivateSessionOnSeat",
3442                                 SD_BUS_ARGS("s", session_id, "s", seat_id),
3443                                 SD_BUS_NO_RESULT,
3444                                 method_activate_session_on_seat,
3445                                 SD_BUS_VTABLE_UNPRIVILEGED),
3446         SD_BUS_METHOD_WITH_ARGS("LockSession",
3447                                 SD_BUS_ARGS("s", session_id),
3448                                 SD_BUS_NO_RESULT,
3449                                 method_lock_session,
3450                                 SD_BUS_VTABLE_UNPRIVILEGED),
3451         SD_BUS_METHOD_WITH_ARGS("UnlockSession",
3452                                 SD_BUS_ARGS("s", session_id),
3453                                 SD_BUS_NO_RESULT,
3454                                 method_lock_session,
3455                                 SD_BUS_VTABLE_UNPRIVILEGED),
3456         SD_BUS_METHOD("LockSessions",
3457                       NULL,
3458                       NULL,
3459                       method_lock_sessions,
3460                       SD_BUS_VTABLE_UNPRIVILEGED),
3461         SD_BUS_METHOD("UnlockSessions",
3462                       NULL,
3463                       NULL,
3464                       method_lock_sessions,
3465                       SD_BUS_VTABLE_UNPRIVILEGED),
3466         SD_BUS_METHOD_WITH_ARGS("KillSession",
3467                                 SD_BUS_ARGS("s", session_id, "s", who, "i", signal_number),
3468                                 SD_BUS_NO_RESULT,
3469                                 method_kill_session,
3470                                 SD_BUS_VTABLE_UNPRIVILEGED),
3471         SD_BUS_METHOD_WITH_ARGS("KillUser",
3472                                 SD_BUS_ARGS("u", uid, "i", signal_number),
3473                                 SD_BUS_NO_RESULT,
3474                                 method_kill_user,
3475                                 SD_BUS_VTABLE_UNPRIVILEGED),
3476         SD_BUS_METHOD_WITH_ARGS("TerminateSession",
3477                                 SD_BUS_ARGS("s", session_id),
3478                                 SD_BUS_NO_RESULT,
3479                                 method_terminate_session,
3480                                 SD_BUS_VTABLE_UNPRIVILEGED),
3481         SD_BUS_METHOD_WITH_ARGS("TerminateUser",
3482                                 SD_BUS_ARGS("u", uid),
3483                                 SD_BUS_NO_RESULT,
3484                                 method_terminate_user,
3485                                 SD_BUS_VTABLE_UNPRIVILEGED),
3486         SD_BUS_METHOD_WITH_ARGS("TerminateSeat",
3487                                 SD_BUS_ARGS("s", seat_id),
3488                                 SD_BUS_NO_RESULT,
3489                                 method_terminate_seat,
3490                                 SD_BUS_VTABLE_UNPRIVILEGED),
3491         SD_BUS_METHOD_WITH_ARGS("SetUserLinger",
3492                                 SD_BUS_ARGS("u", uid, "b", enable, "b", interactive),
3493                                 SD_BUS_NO_RESULT,
3494                                 method_set_user_linger,
3495                                 SD_BUS_VTABLE_UNPRIVILEGED),
3496         SD_BUS_METHOD_WITH_ARGS("AttachDevice",
3497                                 SD_BUS_ARGS("s", seat_id, "s", sysfs_path, "b", interactive),
3498                                 SD_BUS_NO_RESULT,
3499                                 method_attach_device,
3500                                 SD_BUS_VTABLE_UNPRIVILEGED),
3501         SD_BUS_METHOD_WITH_ARGS("FlushDevices",
3502                                 SD_BUS_ARGS("b", interactive),
3503                                 SD_BUS_NO_RESULT,
3504                                 method_flush_devices,
3505                                 SD_BUS_VTABLE_UNPRIVILEGED),
3506         SD_BUS_METHOD_WITH_ARGS("PowerOff",
3507                                 SD_BUS_ARGS("b", interactive),
3508                                 SD_BUS_NO_RESULT,
3509                                 method_poweroff,
3510                                 SD_BUS_VTABLE_UNPRIVILEGED),
3511         SD_BUS_METHOD_WITH_ARGS("PowerOffWithFlags",
3512                                 SD_BUS_ARGS("t", flags),
3513                                 SD_BUS_NO_RESULT,
3514                                 method_poweroff,
3515                                 SD_BUS_VTABLE_UNPRIVILEGED),
3516         SD_BUS_METHOD_WITH_ARGS("Reboot",
3517                                 SD_BUS_ARGS("b", interactive),
3518                                 SD_BUS_NO_RESULT,
3519                                 method_reboot,
3520                                 SD_BUS_VTABLE_UNPRIVILEGED),
3521         SD_BUS_METHOD_WITH_ARGS("RebootWithFlags",
3522                                 SD_BUS_ARGS("t", flags),
3523                                 SD_BUS_NO_RESULT,
3524                                 method_reboot,
3525                                 SD_BUS_VTABLE_UNPRIVILEGED),
3526         SD_BUS_METHOD_WITH_ARGS("Halt",
3527                                 SD_BUS_ARGS("b", interactive),
3528                                 SD_BUS_NO_RESULT,
3529                                 method_halt,
3530                                 SD_BUS_VTABLE_UNPRIVILEGED),
3531         SD_BUS_METHOD_WITH_ARGS("HaltWithFlags",
3532                                 SD_BUS_ARGS("t", flags),
3533                                 SD_BUS_NO_RESULT,
3534                                 method_halt,
3535                                 SD_BUS_VTABLE_UNPRIVILEGED),
3536         SD_BUS_METHOD_WITH_ARGS("Suspend",
3537                                 SD_BUS_ARGS("b", interactive),
3538                                 SD_BUS_NO_RESULT,
3539                                 method_suspend,
3540                                 SD_BUS_VTABLE_UNPRIVILEGED),
3541         SD_BUS_METHOD_WITH_ARGS("SuspendWithFlags",
3542                                 SD_BUS_ARGS("t", flags),
3543                                 SD_BUS_NO_RESULT,
3544                                 method_suspend,
3545                                 SD_BUS_VTABLE_UNPRIVILEGED),
3546         SD_BUS_METHOD_WITH_ARGS("Hibernate",
3547                                 SD_BUS_ARGS("b", interactive),
3548                                 SD_BUS_NO_RESULT,
3549                                 method_hibernate,
3550                                 SD_BUS_VTABLE_UNPRIVILEGED),
3551         SD_BUS_METHOD_WITH_ARGS("HibernateWithFlags",
3552                                 SD_BUS_ARGS("t", flags),
3553                                 SD_BUS_NO_RESULT,
3554                                 method_hibernate,
3555                                 SD_BUS_VTABLE_UNPRIVILEGED),
3556         SD_BUS_METHOD_WITH_ARGS("HybridSleep",
3557                                 SD_BUS_ARGS("b", interactive),
3558                                 SD_BUS_NO_RESULT,
3559                                 method_hybrid_sleep,
3560                                 SD_BUS_VTABLE_UNPRIVILEGED),
3561         SD_BUS_METHOD_WITH_ARGS("HybridSleepWithFlags",
3562                                 SD_BUS_ARGS("t", flags),
3563                                 SD_BUS_NO_RESULT,
3564                                 method_hybrid_sleep,
3565                                 SD_BUS_VTABLE_UNPRIVILEGED),
3566         SD_BUS_METHOD_WITH_ARGS("SuspendThenHibernate",
3567                                 SD_BUS_ARGS("b", interactive),
3568                                 SD_BUS_NO_RESULT,
3569                                 method_suspend_then_hibernate,
3570                                 SD_BUS_VTABLE_UNPRIVILEGED),
3571         SD_BUS_METHOD_WITH_ARGS("SuspendThenHibernateWithFlags",
3572                                 SD_BUS_ARGS("t", flags),
3573                                 SD_BUS_NO_RESULT,
3574                                 method_suspend_then_hibernate,
3575                                 SD_BUS_VTABLE_UNPRIVILEGED),
3576         SD_BUS_METHOD_WITH_ARGS("CanPowerOff",
3577                                 SD_BUS_NO_ARGS,
3578                                 SD_BUS_RESULT("s", result),
3579                                 method_can_poweroff,
3580                                 SD_BUS_VTABLE_UNPRIVILEGED),
3581         SD_BUS_METHOD_WITH_ARGS("CanReboot",
3582                                 SD_BUS_NO_ARGS,
3583                                 SD_BUS_RESULT("s", result),
3584                                 method_can_reboot,
3585                                 SD_BUS_VTABLE_UNPRIVILEGED),
3586         SD_BUS_METHOD_WITH_ARGS("CanHalt",
3587                                 SD_BUS_NO_ARGS,
3588                                 SD_BUS_RESULT("s", result),
3589                                 method_can_halt,
3590                                 SD_BUS_VTABLE_UNPRIVILEGED),
3591         SD_BUS_METHOD_WITH_ARGS("CanSuspend",
3592                                 SD_BUS_NO_ARGS,
3593                                 SD_BUS_RESULT("s", result),
3594                                 method_can_suspend,
3595                                 SD_BUS_VTABLE_UNPRIVILEGED),
3596         SD_BUS_METHOD_WITH_ARGS("CanHibernate",
3597                                 SD_BUS_NO_ARGS,
3598                                 SD_BUS_RESULT("s", result),
3599                                 method_can_hibernate,
3600                                 SD_BUS_VTABLE_UNPRIVILEGED),
3601         SD_BUS_METHOD_WITH_ARGS("CanHybridSleep",
3602                                 SD_BUS_NO_ARGS,
3603                                 SD_BUS_RESULT("s", result),
3604                                 method_can_hybrid_sleep,
3605                                 SD_BUS_VTABLE_UNPRIVILEGED),
3606         SD_BUS_METHOD_WITH_ARGS("CanSuspendThenHibernate",
3607                                 SD_BUS_NO_ARGS,
3608                                 SD_BUS_RESULT("s", result),
3609                                 method_can_suspend_then_hibernate,
3610                                 SD_BUS_VTABLE_UNPRIVILEGED),
3611         SD_BUS_METHOD_WITH_ARGS("ScheduleShutdown",
3612                                 SD_BUS_ARGS("s", type, "t", usec),
3613                                 SD_BUS_NO_RESULT,
3614                                 method_schedule_shutdown,
3615                                 SD_BUS_VTABLE_UNPRIVILEGED),
3616         SD_BUS_METHOD_WITH_ARGS("CancelScheduledShutdown",
3617                                 SD_BUS_NO_ARGS,
3618                                 SD_BUS_RESULT("b", cancelled),
3619                                 method_cancel_scheduled_shutdown,
3620                                 SD_BUS_VTABLE_UNPRIVILEGED),
3621         SD_BUS_METHOD_WITH_ARGS("Inhibit",
3622                                 SD_BUS_ARGS("s", what, "s", who, "s", why, "s", mode),
3623                                 SD_BUS_RESULT("h", pipe_fd),
3624                                 method_inhibit,
3625                                 SD_BUS_VTABLE_UNPRIVILEGED),
3626         SD_BUS_METHOD_WITH_ARGS("CanRebootParameter",
3627                                 SD_BUS_NO_ARGS,
3628                                 SD_BUS_RESULT("s", result),
3629                                 method_can_reboot_parameter,
3630                                 SD_BUS_VTABLE_UNPRIVILEGED),
3631         SD_BUS_METHOD_WITH_ARGS("SetRebootParameter",
3632                                 SD_BUS_ARGS("s", parameter),
3633                                 SD_BUS_NO_RESULT,
3634                                 method_set_reboot_parameter,
3635                                 SD_BUS_VTABLE_UNPRIVILEGED),
3636         SD_BUS_METHOD_WITH_ARGS("CanRebootToFirmwareSetup",
3637                                 SD_BUS_NO_ARGS,
3638                                 SD_BUS_RESULT("s", result),
3639                                 method_can_reboot_to_firmware_setup,
3640                                 SD_BUS_VTABLE_UNPRIVILEGED),
3641         SD_BUS_METHOD_WITH_ARGS("SetRebootToFirmwareSetup",
3642                                 SD_BUS_ARGS("b", enable),
3643                                 SD_BUS_NO_RESULT,
3644                                 method_set_reboot_to_firmware_setup,
3645                                 SD_BUS_VTABLE_UNPRIVILEGED),
3646         SD_BUS_METHOD_WITH_ARGS("CanRebootToBootLoaderMenu",
3647                                 SD_BUS_NO_ARGS,
3648                                 SD_BUS_RESULT("s", result),
3649                                 method_can_reboot_to_boot_loader_menu,
3650                                 SD_BUS_VTABLE_UNPRIVILEGED),
3651         SD_BUS_METHOD_WITH_ARGS("SetRebootToBootLoaderMenu",
3652                                 SD_BUS_ARGS("t", timeout),
3653                                 SD_BUS_NO_RESULT,
3654                                 method_set_reboot_to_boot_loader_menu,
3655                                 SD_BUS_VTABLE_UNPRIVILEGED),
3656         SD_BUS_METHOD_WITH_ARGS("CanRebootToBootLoaderEntry",
3657                                 SD_BUS_NO_ARGS,
3658                                 SD_BUS_RESULT("s", result),
3659                                 method_can_reboot_to_boot_loader_entry,
3660                                 SD_BUS_VTABLE_UNPRIVILEGED),
3661         SD_BUS_METHOD_WITH_ARGS("SetRebootToBootLoaderEntry",
3662                                 SD_BUS_ARGS("s", boot_loader_entry),
3663                                 SD_BUS_NO_RESULT,
3664                                 method_set_reboot_to_boot_loader_entry,
3665                                 SD_BUS_VTABLE_UNPRIVILEGED),
3666         SD_BUS_METHOD_WITH_ARGS("SetWallMessage",
3667                                 SD_BUS_ARGS("s", wall_message, "b", enable),
3668                                 SD_BUS_NO_RESULT,
3669                                 method_set_wall_message,
3670                                 SD_BUS_VTABLE_UNPRIVILEGED),
3671
3672         SD_BUS_SIGNAL_WITH_ARGS("SessionNew",
3673                                 SD_BUS_ARGS("s", session_id, "o", object_path),
3674                                 0),
3675         SD_BUS_SIGNAL_WITH_ARGS("SessionRemoved",
3676                                 SD_BUS_ARGS("s", session_id, "o", object_path),
3677                                 0),
3678         SD_BUS_SIGNAL_WITH_ARGS("UserNew",
3679                                 SD_BUS_ARGS("u", uid, "o", object_path),
3680                                 0),
3681         SD_BUS_SIGNAL_WITH_ARGS("UserRemoved",
3682                                 SD_BUS_ARGS("u", uid, "o", object_path),
3683                                 0),
3684         SD_BUS_SIGNAL_WITH_ARGS("SeatNew",
3685                                 SD_BUS_ARGS("s", seat_id, "o", object_path),
3686                                 0),
3687         SD_BUS_SIGNAL_WITH_ARGS("SeatRemoved",
3688                                 SD_BUS_ARGS("s", seat_id, "o", object_path),
3689                                 0),
3690         SD_BUS_SIGNAL_WITH_ARGS("PrepareForShutdown",
3691                                 SD_BUS_ARGS("b", start),
3692                                 0),
3693         SD_BUS_SIGNAL_WITH_ARGS("PrepareForSleep",
3694                                 SD_BUS_ARGS("b", start),
3695                                 0),
3696
3697         SD_BUS_VTABLE_END
3698 };
3699
3700 const BusObjectImplementation manager_object = {
3701         "/org/freedesktop/login1",
3702         "org.freedesktop.login1.Manager",
3703         .vtables = BUS_VTABLES(manager_vtable),
3704         .children = BUS_IMPLEMENTATIONS(&seat_object,
3705                                         &session_object,
3706                                         &user_object),
3707 };
3708
3709 static int session_jobs_reply(Session *s, uint32_t jid, const char *unit, const char *result) {
3710         assert(s);
3711         assert(unit);
3712
3713         if (!s->started)
3714                 return 0;
3715
3716         if (result && !streq(result, "done")) {
3717                 _cleanup_(sd_bus_error_free) sd_bus_error e = SD_BUS_ERROR_NULL;
3718
3719                 sd_bus_error_setf(&e, BUS_ERROR_JOB_FAILED,
3720                                   "Job %u for unit '%s' failed with '%s'", jid, unit, result);
3721                 return session_send_create_reply(s, &e);
3722         }
3723
3724         return session_send_create_reply(s, NULL);
3725 }
3726
3727 int match_job_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3728         const char *path, *result, *unit;
3729         Manager *m = ASSERT_PTR(userdata);
3730         Session *session;
3731         uint32_t id;
3732         User *user;
3733         int r;
3734
3735         assert(message);
3736
3737         r = sd_bus_message_read(message, "uoss", &id, &path, &unit, &result);
3738         if (r < 0) {
3739                 bus_log_parse_error(r);
3740                 return 0;
3741         }
3742
3743         if (m->action_job && streq(m->action_job, path)) {
3744                 assert(m->delayed_action);
3745                 log_info("Operation '%s' finished.", inhibit_what_to_string(m->delayed_action->inhibit_what));
3746
3747                 /* Tell people that they now may take a lock again */
3748                 (void) send_prepare_for(m, m->delayed_action->inhibit_what, false);
3749
3750                 m->action_job = mfree(m->action_job);
3751                 m->delayed_action = NULL;
3752                 return 0;
3753         }
3754
3755         session = hashmap_get(m->session_units, unit);
3756         if (session) {
3757                 if (streq_ptr(path, session->scope_job)) {
3758                         session->scope_job = mfree(session->scope_job);
3759                         (void) session_jobs_reply(session, id, unit, result);
3760
3761                         session_save(session);
3762                         user_save(session->user);
3763                 }
3764
3765                 session_add_to_gc_queue(session);
3766         }
3767
3768         user = hashmap_get(m->user_units, unit);
3769         if (user) {
3770                 if (streq_ptr(path, user->service_job)) {
3771                         user->service_job = mfree(user->service_job);
3772
3773                         LIST_FOREACH(sessions_by_user, s, user->sessions)
3774                                 (void) session_jobs_reply(s, id, unit, NULL /* don't propagate user service failures to the client */);
3775
3776                         user_save(user);
3777                 }
3778
3779                 user_add_to_gc_queue(user);
3780         }
3781
3782         return 0;
3783 }
3784
3785 int match_unit_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3786         const char *path, *unit;
3787         Manager *m = ASSERT_PTR(userdata);
3788         Session *session;
3789         User *user;
3790         int r;
3791
3792         assert(message);
3793
3794         r = sd_bus_message_read(message, "so", &unit, &path);
3795         if (r < 0) {
3796                 bus_log_parse_error(r);
3797                 return 0;
3798         }
3799
3800         session = hashmap_get(m->session_units, unit);
3801         if (session)
3802                 session_add_to_gc_queue(session);
3803
3804         user = hashmap_get(m->user_units, unit);
3805         if (user)
3806                 user_add_to_gc_queue(user);
3807
3808         return 0;
3809 }
3810
3811 int match_properties_changed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3812         _cleanup_free_ char *unit = NULL;
3813         Manager *m = ASSERT_PTR(userdata);
3814         const char *path;
3815         Session *session;
3816         User *user;
3817         int r;
3818
3819         assert(message);
3820
3821         path = sd_bus_message_get_path(message);
3822         if (!path)
3823                 return 0;
3824
3825         r = unit_name_from_dbus_path(path, &unit);
3826         if (r == -EINVAL) /* not a unit */
3827                 return 0;
3828         if (r < 0) {
3829                 log_oom();
3830                 return 0;
3831         }
3832
3833         session = hashmap_get(m->session_units, unit);
3834         if (session)
3835                 session_add_to_gc_queue(session);
3836
3837         user = hashmap_get(m->user_units, unit);
3838         if (user)
3839                 user_add_to_gc_queue(user);
3840
3841         return 0;
3842 }
3843
3844 int match_reloading(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3845         Manager *m = ASSERT_PTR(userdata);
3846         Session *session;
3847         int b, r;
3848
3849         assert(message);
3850
3851         r = sd_bus_message_read(message, "b", &b);
3852         if (r < 0) {
3853                 bus_log_parse_error(r);
3854                 return 0;
3855         }
3856
3857         if (b)
3858                 return 0;
3859
3860         /* systemd finished reloading, let's recheck all our sessions */
3861         log_debug("System manager has been reloaded, rechecking sessions...");
3862
3863         HASHMAP_FOREACH(session, m->sessions)
3864                 session_add_to_gc_queue(session);
3865
3866         return 0;
3867 }
3868
3869 int manager_send_changed(Manager *manager, const char *property, ...) {
3870         char **l;
3871
3872         assert(manager);
3873
3874         l = strv_from_stdarg_alloca(property);
3875
3876         return sd_bus_emit_properties_changed_strv(
3877                         manager->bus,
3878                         "/org/freedesktop/login1",
3879                         "org.freedesktop.login1.Manager",
3880                         l);
3881 }
3882
3883 static int strdup_job(sd_bus_message *reply, char **job) {
3884         const char *j;
3885         char *copy;
3886         int r;
3887
3888         r = sd_bus_message_read(reply, "o", &j);
3889         if (r < 0)
3890                 return r;
3891
3892         copy = strdup(j);
3893         if (!copy)
3894                 return -ENOMEM;
3895
3896         *job = copy;
3897         return 1;
3898 }
3899
3900 int manager_start_scope(
3901                 Manager *manager,
3902                 const char *scope,
3903                 pid_t pid,
3904                 const char *slice,
3905                 const char *description,
3906                 char **wants,
3907                 char **after,
3908                 const char *requires_mounts_for,
3909                 sd_bus_message *more_properties,
3910                 sd_bus_error *error,
3911                 char **job) {
3912
3913         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
3914         int r;
3915
3916         assert(manager);
3917         assert(scope);
3918         assert(pid > 1);
3919         assert(job);
3920
3921         r = bus_message_new_method_call(manager->bus, &m, bus_systemd_mgr, "StartTransientUnit");
3922         if (r < 0)
3923                 return r;
3924
3925         r = sd_bus_message_append(m, "ss", strempty(scope), "fail");
3926         if (r < 0)
3927                 return r;
3928
3929         r = sd_bus_message_open_container(m, 'a', "(sv)");
3930         if (r < 0)
3931                 return r;
3932
3933         if (!isempty(slice)) {
3934                 r = sd_bus_message_append(m, "(sv)", "Slice", "s", slice);
3935                 if (r < 0)
3936                         return r;
3937         }
3938
3939         if (!isempty(description)) {
3940                 r = sd_bus_message_append(m, "(sv)", "Description", "s", description);
3941                 if (r < 0)
3942                         return r;
3943         }
3944
3945         STRV_FOREACH(i, wants) {
3946                 r = sd_bus_message_append(m, "(sv)", "Wants", "as", 1, *i);
3947                 if (r < 0)
3948                         return r;
3949         }
3950
3951         STRV_FOREACH(i, after) {
3952                 r = sd_bus_message_append(m, "(sv)", "After", "as", 1, *i);
3953                 if (r < 0)
3954                         return r;
3955         }
3956
3957         if (!empty_or_root(requires_mounts_for)) {
3958                 r = sd_bus_message_append(m, "(sv)", "RequiresMountsFor", "as", 1, requires_mounts_for);
3959                 if (r < 0)
3960                         return r;
3961         }
3962
3963         /* Make sure that the session shells are terminated with SIGHUP since bash and friends tend to ignore
3964          * SIGTERM */
3965         r = sd_bus_message_append(m, "(sv)", "SendSIGHUP", "b", true);
3966         if (r < 0)
3967                 return r;
3968
3969         r = sd_bus_message_append(m, "(sv)", "PIDs", "au", 1, pid);
3970         if (r < 0)
3971                 return r;
3972
3973         /* disable TasksMax= for the session scope, rely on the slice setting for it */
3974         r = sd_bus_message_append(m, "(sv)", "TasksMax", "t", UINT64_MAX);
3975         if (r < 0)
3976                 return bus_log_create_error(r);
3977
3978         if (more_properties) {
3979                 /* If TasksMax also appears here, it will overwrite the default value set above */
3980                 r = sd_bus_message_copy(m, more_properties, true);
3981                 if (r < 0)
3982                         return r;
3983         }
3984
3985         r = sd_bus_message_close_container(m);
3986         if (r < 0)
3987                 return r;
3988
3989         r = sd_bus_message_append(m, "a(sa(sv))", 0);
3990         if (r < 0)
3991                 return r;
3992
3993         r = sd_bus_call(manager->bus, m, 0, error, &reply);
3994         if (r < 0)
3995                 return r;
3996
3997         return strdup_job(reply, job);
3998 }
3999
4000 int manager_start_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) {
4001         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4002         int r;
4003
4004         assert(manager);
4005         assert(unit);
4006         assert(job);
4007
4008         r = bus_call_method(
4009                         manager->bus,
4010                         bus_systemd_mgr,
4011                         "StartUnit",
4012                         error,
4013                         &reply,
4014                         "ss", unit, "replace");
4015         if (r < 0)
4016                 return r;
4017
4018         return strdup_job(reply, job);
4019 }
4020
4021 int manager_stop_unit(Manager *manager, const char *unit, const char *job_mode, sd_bus_error *error, char **ret_job) {
4022         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4023         int r;
4024
4025         assert(manager);
4026         assert(unit);
4027         assert(ret_job);
4028
4029         r = bus_call_method(
4030                         manager->bus,
4031                         bus_systemd_mgr,
4032                         "StopUnit",
4033                         error,
4034                         &reply,
4035                         "ss", unit, job_mode ?: "fail");
4036         if (r < 0) {
4037                 if (sd_bus_error_has_names(error, BUS_ERROR_NO_SUCH_UNIT,
4038                                                   BUS_ERROR_LOAD_FAILED)) {
4039
4040                         *ret_job = NULL;
4041                         sd_bus_error_free(error);
4042                         return 0;
4043                 }
4044
4045                 return r;
4046         }
4047
4048         return strdup_job(reply, ret_job);
4049 }
4050
4051 int manager_abandon_scope(Manager *manager, const char *scope, sd_bus_error *ret_error) {
4052         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4053         _cleanup_free_ char *path = NULL;
4054         int r;
4055
4056         assert(manager);
4057         assert(scope);
4058
4059         path = unit_dbus_path_from_name(scope);
4060         if (!path)
4061                 return -ENOMEM;
4062
4063         r = sd_bus_call_method(
4064                         manager->bus,
4065                         "org.freedesktop.systemd1",
4066                         path,
4067                         "org.freedesktop.systemd1.Scope",
4068                         "Abandon",
4069                         &error,
4070                         NULL,
4071                         NULL);
4072         if (r < 0) {
4073                 if (sd_bus_error_has_names(&error, BUS_ERROR_NO_SUCH_UNIT,
4074                                                    BUS_ERROR_LOAD_FAILED,
4075                                                    BUS_ERROR_SCOPE_NOT_RUNNING))
4076                         return 0;
4077
4078                 sd_bus_error_move(ret_error, &error);
4079                 return r;
4080         }
4081
4082         return 1;
4083 }
4084
4085 int manager_kill_unit(Manager *manager, const char *unit, KillWho who, int signo, sd_bus_error *error) {
4086         assert(manager);
4087         assert(unit);
4088
4089         return bus_call_method(
4090                         manager->bus,
4091                         bus_systemd_mgr,
4092                         "KillUnit",
4093                         error,
4094                         NULL,
4095                         "ssi", unit, who == KILL_LEADER ? "main" : "all", signo);
4096 }
4097
4098 int manager_unit_is_active(Manager *manager, const char *unit, sd_bus_error *ret_error) {
4099         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4100         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4101         _cleanup_free_ char *path = NULL;
4102         const char *state;
4103         int r;
4104
4105         assert(manager);
4106         assert(unit);
4107
4108         path = unit_dbus_path_from_name(unit);
4109         if (!path)
4110                 return -ENOMEM;
4111
4112         r = sd_bus_get_property(
4113                         manager->bus,
4114                         "org.freedesktop.systemd1",
4115                         path,
4116                         "org.freedesktop.systemd1.Unit",
4117                         "ActiveState",
4118                         &error,
4119                         &reply,
4120                         "s");
4121         if (r < 0) {
4122                 /* systemd might have dropped off momentarily, let's
4123                  * not make this an error */
4124                 if (sd_bus_error_has_names(&error, SD_BUS_ERROR_NO_REPLY,
4125                                                    SD_BUS_ERROR_DISCONNECTED))
4126                         return true;
4127
4128                 /* If the unit is already unloaded then it's not
4129                  * active */
4130                 if (sd_bus_error_has_names(&error, BUS_ERROR_NO_SUCH_UNIT,
4131                                                    BUS_ERROR_LOAD_FAILED))
4132                         return false;
4133
4134                 sd_bus_error_move(ret_error, &error);
4135                 return r;
4136         }
4137
4138         r = sd_bus_message_read(reply, "s", &state);
4139         if (r < 0)
4140                 return r;
4141
4142         return !STR_IN_SET(state, "inactive", "failed");
4143 }
4144
4145 int manager_job_is_active(Manager *manager, const char *path, sd_bus_error *ret_error) {
4146         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4147         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4148         int r;
4149
4150         assert(manager);
4151         assert(path);
4152
4153         r = sd_bus_get_property(
4154                         manager->bus,
4155                         "org.freedesktop.systemd1",
4156                         path,
4157                         "org.freedesktop.systemd1.Job",
4158                         "State",
4159                         &error,
4160                         &reply,
4161                         "s");
4162         if (r < 0) {
4163                 if (sd_bus_error_has_names(&error, SD_BUS_ERROR_NO_REPLY,
4164                                                    SD_BUS_ERROR_DISCONNECTED))
4165                         return true;
4166
4167                 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_OBJECT))
4168                         return false;
4169
4170                 sd_bus_error_move(ret_error, &error);
4171                 return r;
4172         }
4173
4174         /* We don't actually care about the state really. The fact
4175          * that we could read the job state is enough for us */
4176
4177         return true;
4178 }