src/login/logind-dbus.c

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2
   3 #include <errno.h>
   4 #include <sys/stat.h>
   5 #include <unistd.h>
   6
   7 #include "sd-device.h"
   8 #include "sd-messages.h"
   9
  10 #include "alloc-util.h"
  11 #include "audit-util.h"
  12 #include "bootspec.h"
  13 #include "bus-common-errors.h"
  14 #include "bus-error.h"
  15 #include "bus-get-properties.h"
  16 #include "bus-locator.h"
  17 #include "bus-polkit.h"
  18 #include "bus-unit-util.h"
  19 #include "bus-util.h"
  20 #include "cgroup-util.h"
  21 #include "device-util.h"
  22 #include "dirent-util.h"
  23 #include "efi-loader.h"
  24 #include "efivars.h"
  25 #include "env-util.h"
  26 #include "escape.h"
  27 #include "fd-util.h"
  28 #include "fileio-label.h"
  29 #include "fileio.h"
  30 #include "format-util.h"
  31 #include "fs-util.h"
  32 #include "logind-dbus.h"
  33 #include "logind-seat-dbus.h"
  34 #include "logind-session-dbus.h"
  35 #include "logind-user-dbus.h"
  36 #include "logind.h"
  37 #include "missing_capability.h"
  38 #include "mkdir.h"
  39 #include "parse-util.h"
  40 #include "path-util.h"
  41 #include "process-util.h"
  42 #include "reboot-util.h"
  43 #include "selinux-util.h"
  44 #include "sleep-config.h"
  45 #include "special.h"
  46 #include "stdio-util.h"
  47 #include "strv.h"
  48 #include "terminal-util.h"
  49 #include "tmpfile-util.h"
  50 #include "unit-name.h"
  51 #include "user-util.h"
  52 #include "utmp-wtmp.h"
  53 #include "virt.h"
  54
  55 static int get_sender_session(
  56                 Manager *m,
  57                 sd_bus_message *message,
  58                 bool consult_display,
  59                 sd_bus_error *error,
  60                 Session **ret) {
  61
  62         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
  63         Session *session = NULL;
  64         const char *name;
  65         int r;
  66
  67         /* Acquire the sender's session. This first checks if the sending process is inside a session itself,
  68          * and returns that. If not and 'consult_display' is true, this returns the display session of the
  69          * owning user of the caller. */
  70
  71         r = sd_bus_query_sender_creds(message,
  72                                       SD_BUS_CREDS_SESSION|SD_BUS_CREDS_AUGMENT|
  73                                       (consult_display ? SD_BUS_CREDS_OWNER_UID : 0), &creds);
  74         if (r < 0)
  75                 return r;
  76
  77         r = sd_bus_creds_get_session(creds, &name);
  78         if (r < 0) {
  79                 if (r != -ENXIO)
  80                         return r;
  81
  82                 if (consult_display) {
  83                         uid_t uid;
  84
  85                         r = sd_bus_creds_get_owner_uid(creds, &uid);
  86                         if (r < 0) {
  87                                 if (r != -ENXIO)
  88                                         return r;
  89                         } else {
  90                                 User *user;
  91
  92                                 user = hashmap_get(m->users, UID_TO_PTR(uid));
  93                                 if (user)
  94                                         session = user->display;
  95                         }
  96                 }
  97         } else
  98                 session = hashmap_get(m->sessions, name);
  99
 100         if (!session)
 101                 return sd_bus_error_setf(error, BUS_ERROR_NO_SESSION_FOR_PID,
 102                                          consult_display ?
 103                                          "Caller does not belong to any known session and doesn't own any suitable session." :
 104                                          "Caller does not belong to any known session.");
 105
 106         *ret = session;
 107         return 0;
 108 }
 109
 110 int manager_get_session_from_creds(
 111                 Manager *m,
 112                 sd_bus_message *message,
 113                 const char *name,
 114                 sd_bus_error *error,
 115                 Session **ret) {
 116
 117         Session *session;
 118
 119         assert(m);
 120         assert(ret);
 121
 122         if (SEAT_IS_SELF(name)) /* the caller's own session */
 123                 return get_sender_session(m, message, false, error, ret);
 124         if (SEAT_IS_AUTO(name)) /* The caller's own session if they have one, otherwise their user's display session */
 125                 return get_sender_session(m, message, true, error, ret);
 126
 127         session = hashmap_get(m->sessions, name);
 128         if (!session)
 129                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SESSION, "No session '%s' known", name);
 130
 131         *ret = session;
 132         return 0;
 133 }
 134
 135 static int get_sender_user(Manager *m, sd_bus_message *message, sd_bus_error *error, User **ret) {
 136         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 137         uid_t uid;
 138         User *user;
 139         int r;
 140
 141         /* Note that we get the owner UID of the session, not the actual client UID here! */
 142         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds);
 143         if (r < 0)
 144                 return r;
 145
 146         r = sd_bus_creds_get_owner_uid(creds, &uid);
 147         if (r < 0) {
 148                 if (r != -ENXIO)
 149                         return r;
 150
 151                 user = NULL;
 152         } else
 153                 user = hashmap_get(m->users, UID_TO_PTR(uid));
 154
 155         if (!user)
 156                 return sd_bus_error_setf(error, BUS_ERROR_NO_USER_FOR_PID,
 157                                          "Caller does not belong to any logged in or lingering user");
 158
 159         *ret = user;
 160         return 0;
 161 }
 162
 163 int manager_get_user_from_creds(Manager *m, sd_bus_message *message, uid_t uid, sd_bus_error *error, User **ret) {
 164         User *user;
 165
 166         assert(m);
 167         assert(ret);
 168
 169         if (!uid_is_valid(uid))
 170                 return get_sender_user(m, message, error, ret);
 171
 172         user = hashmap_get(m->users, UID_TO_PTR(uid));
 173         if (!user)
 174                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_USER,
 175                                          "User ID "UID_FMT" is not logged in or lingering", uid);
 176
 177         *ret = user;
 178         return 0;
 179 }
 180
 181 int manager_get_seat_from_creds(
 182                 Manager *m,
 183                 sd_bus_message *message,
 184                 const char *name,
 185                 sd_bus_error *error,
 186                 Seat **ret) {
 187
 188         Seat *seat;
 189         int r;
 190
 191         assert(m);
 192         assert(ret);
 193
 194         if (SEAT_IS_SELF(name) || SEAT_IS_AUTO(name)) {
 195                 Session *session;
 196
 197                 /* Use these special seat names as session names */
 198                 r = manager_get_session_from_creds(m, message, name, error, &session);
 199                 if (r < 0)
 200                         return r;
 201
 202                 seat = session->seat;
 203                 if (!seat)
 204                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "Session '%s' has no seat.", session->id);
 205         } else {
 206                 seat = hashmap_get(m->seats, name);
 207                 if (!seat)
 208                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "No seat '%s' known", name);
 209         }
 210
 211         *ret = seat;
 212         return 0;
 213 }
 214
 215 static int return_test_polkit(
 216                 sd_bus_message *message,
 217                 int capability,
 218                 const char *action,
 219                 const char **details,
 220                 uid_t good_user,
 221                 sd_bus_error *e) {
 222
 223         const char *result;
 224         bool challenge;
 225         int r;
 226
 227         r = bus_test_polkit(message, capability, action, details, good_user, &challenge, e);
 228         if (r < 0)
 229                 return r;
 230
 231         if (r > 0)
 232                 result = "yes";
 233         else if (challenge)
 234                 result = "challenge";
 235         else
 236                 result = "no";
 237
 238         return sd_bus_reply_method_return(message, "s", result);
 239 }
 240
 241 static int property_get_idle_hint(
 242                 sd_bus *bus,
 243                 const char *path,
 244                 const char *interface,
 245                 const char *property,
 246                 sd_bus_message *reply,
 247                 void *userdata,
 248                 sd_bus_error *error) {
 249
 250         Manager *m = userdata;
 251
 252         assert(bus);
 253         assert(reply);
 254         assert(m);
 255
 256         return sd_bus_message_append(reply, "b", manager_get_idle_hint(m, NULL) > 0);
 257 }
 258
 259 static int property_get_idle_since_hint(
 260                 sd_bus *bus,
 261                 const char *path,
 262                 const char *interface,
 263                 const char *property,
 264                 sd_bus_message *reply,
 265                 void *userdata,
 266                 sd_bus_error *error) {
 267
 268         Manager *m = userdata;
 269         dual_timestamp t = DUAL_TIMESTAMP_NULL;
 270
 271         assert(bus);
 272         assert(reply);
 273         assert(m);
 274
 275         manager_get_idle_hint(m, &t);
 276
 277         return sd_bus_message_append(reply, "t", streq(property, "IdleSinceHint") ? t.realtime : t.monotonic);
 278 }
 279
 280 static int property_get_inhibited(
 281                 sd_bus *bus,
 282                 const char *path,
 283                 const char *interface,
 284                 const char *property,
 285                 sd_bus_message *reply,
 286                 void *userdata,
 287                 sd_bus_error *error) {
 288
 289         Manager *m = userdata;
 290         InhibitWhat w;
 291
 292         assert(bus);
 293         assert(reply);
 294         assert(m);
 295
 296         w = manager_inhibit_what(m, streq(property, "BlockInhibited") ? INHIBIT_BLOCK : INHIBIT_DELAY);
 297
 298         return sd_bus_message_append(reply, "s", inhibit_what_to_string(w));
 299 }
 300
 301 static int property_get_preparing(
 302                 sd_bus *bus,
 303                 const char *path,
 304                 const char *interface,
 305                 const char *property,
 306                 sd_bus_message *reply,
 307                 void *userdata,
 308                 sd_bus_error *error) {
 309
 310         Manager *m = userdata;
 311         bool b;
 312
 313         assert(bus);
 314         assert(reply);
 315         assert(m);
 316
 317         if (streq(property, "PreparingForShutdown"))
 318                 b = m->action_what & INHIBIT_SHUTDOWN;
 319         else
 320                 b = m->action_what & INHIBIT_SLEEP;
 321
 322         return sd_bus_message_append(reply, "b", b);
 323 }
 324
 325 static int property_get_scheduled_shutdown(
 326                 sd_bus *bus,
 327                 const char *path,
 328                 const char *interface,
 329                 const char *property,
 330                 sd_bus_message *reply,
 331                 void *userdata,
 332                 sd_bus_error *error) {
 333
 334         Manager *m = userdata;
 335         int r;
 336
 337         assert(bus);
 338         assert(reply);
 339         assert(m);
 340
 341         r = sd_bus_message_open_container(reply, 'r', "st");
 342         if (r < 0)
 343                 return r;
 344
 345         r = sd_bus_message_append(reply, "st", m->scheduled_shutdown_type, m->scheduled_shutdown_timeout);
 346         if (r < 0)
 347                 return r;
 348
 349         return sd_bus_message_close_container(reply);
 350 }
 351
 352 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_handle_action, handle_action, HandleAction);
 353 static BUS_DEFINE_PROPERTY_GET(property_get_docked, "b", Manager, manager_is_docked_or_external_displays);
 354 static BUS_DEFINE_PROPERTY_GET(property_get_lid_closed, "b", Manager, manager_is_lid_closed);
 355 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_on_external_power, "b", manager_is_on_external_power);
 356 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_compat_user_tasks_max, "t", CGROUP_LIMIT_MAX);
 357 static BUS_DEFINE_PROPERTY_GET_REF(property_get_hashmap_size, "t", Hashmap *, (uint64_t) hashmap_size);
 358
 359 static int method_get_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 360         _cleanup_free_ char *p = NULL;
 361         Manager *m = userdata;
 362         const char *name;
 363         Session *session;
 364         int r;
 365
 366         assert(message);
 367         assert(m);
 368
 369         r = sd_bus_message_read(message, "s", &name);
 370         if (r < 0)
 371                 return r;
 372
 373         r = manager_get_session_from_creds(m, message, name, error, &session);
 374         if (r < 0)
 375                 return r;
 376
 377         p = session_bus_path(session);
 378         if (!p)
 379                 return -ENOMEM;
 380
 381         return sd_bus_reply_method_return(message, "o", p);
 382 }
 383
 384 /* Get login session of a process.  This is not what you are looking for these days,
 385  * as apps may instead belong to a user service unit.  This includes terminal
 386  * emulators and hence command-line apps. */
 387 static int method_get_session_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 388         _cleanup_free_ char *p = NULL;
 389         Session *session = NULL;
 390         Manager *m = userdata;
 391         pid_t pid;
 392         int r;
 393
 394         assert(message);
 395         assert(m);
 396
 397         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 398
 399         r = sd_bus_message_read(message, "u", &pid);
 400         if (r < 0)
 401                 return r;
 402         if (pid < 0)
 403                 return -EINVAL;
 404
 405         if (pid == 0) {
 406                 r = manager_get_session_from_creds(m, message, NULL, error, &session);
 407                 if (r < 0)
 408                         return r;
 409         } else {
 410                 r = manager_get_session_by_pid(m, pid, &session);
 411                 if (r < 0)
 412                         return r;
 413
 414                 if (!session)
 415                         return sd_bus_error_setf(error, BUS_ERROR_NO_SESSION_FOR_PID,
 416                                                  "PID "PID_FMT" does not belong to any known session", pid);
 417         }
 418
 419         p = session_bus_path(session);
 420         if (!p)
 421                 return -ENOMEM;
 422
 423         return sd_bus_reply_method_return(message, "o", p);
 424 }
 425
 426 static int method_get_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 427         _cleanup_free_ char *p = NULL;
 428         Manager *m = userdata;
 429         uint32_t uid;
 430         User *user;
 431         int r;
 432
 433         assert(message);
 434         assert(m);
 435
 436         r = sd_bus_message_read(message, "u", &uid);
 437         if (r < 0)
 438                 return r;
 439
 440         r = manager_get_user_from_creds(m, message, uid, error, &user);
 441         if (r < 0)
 442                 return r;
 443
 444         p = user_bus_path(user);
 445         if (!p)
 446                 return -ENOMEM;
 447
 448         return sd_bus_reply_method_return(message, "o", p);
 449 }
 450
 451 static int method_get_user_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 452         _cleanup_free_ char *p = NULL;
 453         Manager *m = userdata;
 454         User *user = NULL;
 455         pid_t pid;
 456         int r;
 457
 458         assert(message);
 459         assert(m);
 460
 461         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 462
 463         r = sd_bus_message_read(message, "u", &pid);
 464         if (r < 0)
 465                 return r;
 466         if (pid < 0)
 467                 return -EINVAL;
 468
 469         if (pid == 0) {
 470                 r = manager_get_user_from_creds(m, message, UID_INVALID, error, &user);
 471                 if (r < 0)
 472                         return r;
 473         } else {
 474                 r = manager_get_user_by_pid(m, pid, &user);
 475                 if (r < 0)
 476                         return r;
 477                 if (!user)
 478                         return sd_bus_error_setf(error, BUS_ERROR_NO_USER_FOR_PID,
 479                                                  "PID "PID_FMT" does not belong to any logged in user or lingering user",
 480                                                  pid);
 481         }
 482
 483         p = user_bus_path(user);
 484         if (!p)
 485                 return -ENOMEM;
 486
 487         return sd_bus_reply_method_return(message, "o", p);
 488 }
 489
 490 static int method_get_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 491         _cleanup_free_ char *p = NULL;
 492         Manager *m = userdata;
 493         const char *name;
 494         Seat *seat;
 495         int r;
 496
 497         assert(message);
 498         assert(m);
 499
 500         r = sd_bus_message_read(message, "s", &name);
 501         if (r < 0)
 502                 return r;
 503
 504         r = manager_get_seat_from_creds(m, message, name, error, &seat);
 505         if (r < 0)
 506                 return r;
 507
 508         p = seat_bus_path(seat);
 509         if (!p)
 510                 return -ENOMEM;
 511
 512         return sd_bus_reply_method_return(message, "o", p);
 513 }
 514
 515 static int method_list_sessions(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 516         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 517         Manager *m = userdata;
 518         Session *session;
 519         int r;
 520
 521         assert(message);
 522         assert(m);
 523
 524         r = sd_bus_message_new_method_return(message, &reply);
 525         if (r < 0)
 526                 return r;
 527
 528         r = sd_bus_message_open_container(reply, 'a', "(susso)");
 529         if (r < 0)
 530                 return r;
 531
 532         HASHMAP_FOREACH(session, m->sessions) {
 533                 _cleanup_free_ char *p = NULL;
 534
 535                 p = session_bus_path(session);
 536                 if (!p)
 537                         return -ENOMEM;
 538
 539                 r = sd_bus_message_append(reply, "(susso)",
 540                                           session->id,
 541                                           (uint32_t) session->user->user_record->uid,
 542                                           session->user->user_record->user_name,
 543                                           session->seat ? session->seat->id : "",
 544                                           p);
 545                 if (r < 0)
 546                         return r;
 547         }
 548
 549         r = sd_bus_message_close_container(reply);
 550         if (r < 0)
 551                 return r;
 552
 553         return sd_bus_send(NULL, reply, NULL);
 554 }
 555
 556 static int method_list_users(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 557         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 558         Manager *m = userdata;
 559         User *user;
 560         int r;
 561
 562         assert(message);
 563         assert(m);
 564
 565         r = sd_bus_message_new_method_return(message, &reply);
 566         if (r < 0)
 567                 return r;
 568
 569         r = sd_bus_message_open_container(reply, 'a', "(uso)");
 570         if (r < 0)
 571                 return r;
 572
 573         HASHMAP_FOREACH(user, m->users) {
 574                 _cleanup_free_ char *p = NULL;
 575
 576                 p = user_bus_path(user);
 577                 if (!p)
 578                         return -ENOMEM;
 579
 580                 r = sd_bus_message_append(reply, "(uso)",
 581                                           (uint32_t) user->user_record->uid,
 582                                           user->user_record->user_name,
 583                                           p);
 584                 if (r < 0)
 585                         return r;
 586         }
 587
 588         r = sd_bus_message_close_container(reply);
 589         if (r < 0)
 590                 return r;
 591
 592         return sd_bus_send(NULL, reply, NULL);
 593 }
 594
 595 static int method_list_seats(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 596         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 597         Manager *m = userdata;
 598         Seat *seat;
 599         int r;
 600
 601         assert(message);
 602         assert(m);
 603
 604         r = sd_bus_message_new_method_return(message, &reply);
 605         if (r < 0)
 606                 return r;
 607
 608         r = sd_bus_message_open_container(reply, 'a', "(so)");
 609         if (r < 0)
 610                 return r;
 611
 612         HASHMAP_FOREACH(seat, m->seats) {
 613                 _cleanup_free_ char *p = NULL;
 614
 615                 p = seat_bus_path(seat);
 616                 if (!p)
 617                         return -ENOMEM;
 618
 619                 r = sd_bus_message_append(reply, "(so)", seat->id, p);
 620                 if (r < 0)
 621                         return r;
 622         }
 623
 624         r = sd_bus_message_close_container(reply);
 625         if (r < 0)
 626                 return r;
 627
 628         return sd_bus_send(NULL, reply, NULL);
 629 }
 630
 631 static int method_list_inhibitors(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 632         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 633         Manager *m = userdata;
 634         Inhibitor *inhibitor;
 635         int r;
 636
 637         assert(message);
 638         assert(m);
 639
 640         r = sd_bus_message_new_method_return(message, &reply);
 641         if (r < 0)
 642                 return r;
 643
 644         r = sd_bus_message_open_container(reply, 'a', "(ssssuu)");
 645         if (r < 0)
 646                 return r;
 647
 648         HASHMAP_FOREACH(inhibitor, m->inhibitors) {
 649
 650                 r = sd_bus_message_append(reply, "(ssssuu)",
 651                                           strempty(inhibit_what_to_string(inhibitor->what)),
 652                                           strempty(inhibitor->who),
 653                                           strempty(inhibitor->why),
 654                                           strempty(inhibit_mode_to_string(inhibitor->mode)),
 655                                           (uint32_t) inhibitor->uid,
 656                                           (uint32_t) inhibitor->pid);
 657                 if (r < 0)
 658                         return r;
 659         }
 660
 661         r = sd_bus_message_close_container(reply);
 662         if (r < 0)
 663                 return r;
 664
 665         return sd_bus_send(NULL, reply, NULL);
 666 }
 667
 668 static int method_create_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 669         const char *service, *type, *class, *cseat, *tty, *display, *remote_user, *remote_host, *desktop;
 670         _cleanup_free_ char *id = NULL;
 671         Session *session = NULL;
 672         uint32_t audit_id = 0;
 673         Manager *m = userdata;
 674         User *user = NULL;
 675         Seat *seat = NULL;
 676         pid_t leader;
 677         uid_t uid;
 678         int remote;
 679         uint32_t vtnr = 0;
 680         SessionType t;
 681         SessionClass c;
 682         int r;
 683
 684         assert(message);
 685         assert(m);
 686
 687         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 688         assert_cc(sizeof(uid_t) == sizeof(uint32_t));
 689
 690         r = sd_bus_message_read(message, "uusssssussbss",
 691                                 &uid, &leader, &service, &type, &class, &desktop, &cseat,
 692                                 &vtnr, &tty, &display, &remote, &remote_user, &remote_host);
 693         if (r < 0)
 694                 return r;
 695
 696         if (!uid_is_valid(uid))
 697                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid UID");
 698         if (leader < 0 || leader == 1 || leader == getpid_cached())
 699                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid leader PID");
 700
 701         if (isempty(type))
 702                 t = _SESSION_TYPE_INVALID;
 703         else {
 704                 t = session_type_from_string(type);
 705                 if (t < 0)
 706                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 707                                                  "Invalid session type %s", type);
 708         }
 709
 710         if (isempty(class))
 711                 c = _SESSION_CLASS_INVALID;
 712         else {
 713                 c = session_class_from_string(class);
 714                 if (c < 0)
 715                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 716                                                  "Invalid session class %s", class);
 717         }
 718
 719         if (isempty(desktop))
 720                 desktop = NULL;
 721         else {
 722                 if (!string_is_safe(desktop))
 723                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 724                                                  "Invalid desktop string %s", desktop);
 725         }
 726
 727         if (isempty(cseat))
 728                 seat = NULL;
 729         else {
 730                 seat = hashmap_get(m->seats, cseat);
 731                 if (!seat)
 732                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT,
 733                                                  "No seat '%s' known", cseat);
 734         }
 735
 736         if (tty_is_vc(tty)) {
 737                 int v;
 738
 739                 if (!seat)
 740                         seat = m->seat0;
 741                 else if (seat != m->seat0)
 742                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 743                                                  "TTY %s is virtual console but seat %s is not seat0", tty, seat->id);
 744
 745                 v = vtnr_from_tty(tty);
 746                 if (v <= 0)
 747                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 748                                                  "Cannot determine VT number from virtual console TTY %s", tty);
 749
 750                 if (vtnr == 0)
 751                         vtnr = (uint32_t) v;
 752                 else if (vtnr != (uint32_t) v)
 753                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 754                                                  "Specified TTY and VT number do not match");
 755
 756         } else if (tty_is_console(tty)) {
 757
 758                 if (!seat)
 759                         seat = m->seat0;
 760                 else if (seat != m->seat0)
 761                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 762                                                  "Console TTY specified but seat is not seat0");
 763
 764                 if (vtnr != 0)
 765                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 766                                                  "Console TTY specified but VT number is not 0");
 767         }
 768
 769         if (seat) {
 770                 if (seat_has_vts(seat)) {
 771                         if (vtnr <= 0 || vtnr > 63)
 772                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 773                                                          "VT number out of range");
 774                 } else {
 775                         if (vtnr != 0)
 776                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 777                                                          "Seat has no VTs but VT number not 0");
 778                 }
 779         }
 780
 781         if (t == _SESSION_TYPE_INVALID) {
 782                 if (!isempty(display))
 783                         t = SESSION_X11;
 784                 else if (!isempty(tty))
 785                         t = SESSION_TTY;
 786                 else
 787                         t = SESSION_UNSPECIFIED;
 788         }
 789
 790         if (c == _SESSION_CLASS_INVALID) {
 791                 if (t == SESSION_UNSPECIFIED)
 792                         c = SESSION_BACKGROUND;
 793                 else
 794                         c = SESSION_USER;
 795         }
 796
 797         if (leader == 0) {
 798                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 799
 800                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 801                 if (r < 0)
 802                         return r;
 803
 804                 r = sd_bus_creds_get_pid(creds, (pid_t*) &leader);
 805                 if (r < 0)
 806                         return r;
 807         }
 808
 809         /* Check if we are already in a logind session. Or if we are in user@.service
 810          * which is a special PAM session that avoids creating a logind session. */
 811         r = manager_get_user_by_pid(m, leader, NULL);
 812         if (r < 0)
 813                 return r;
 814         if (r > 0)
 815                 return sd_bus_error_setf(error, BUS_ERROR_SESSION_BUSY,
 816                                          "Already running in a session or user slice");
 817
 818         /*
 819          * Old gdm and lightdm start the user-session on the same VT as
 820          * the greeter session. But they destroy the greeter session
 821          * after the user-session and want the user-session to take
 822          * over the VT. We need to support this for
 823          * backwards-compatibility, so make sure we allow new sessions
 824          * on a VT that a greeter is running on. Furthermore, to allow
 825          * re-logins, we have to allow a greeter to take over a used VT for
 826          * the exact same reasons.
 827          */
 828         if (c != SESSION_GREETER &&
 829             vtnr > 0 &&
 830             vtnr < m->seat0->position_count &&
 831             m->seat0->positions[vtnr] &&
 832             m->seat0->positions[vtnr]->class != SESSION_GREETER)
 833                 return sd_bus_error_setf(error, BUS_ERROR_SESSION_BUSY, "Already occupied by a session");
 834
 835         if (hashmap_size(m->sessions) >= m->sessions_max)
 836                 return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED,
 837                                          "Maximum number of sessions (%" PRIu64 ") reached, refusing further sessions.",
 838                                          m->sessions_max);
 839
 840         (void) audit_session_from_pid(leader, &audit_id);
 841         if (audit_session_is_valid(audit_id)) {
 842                 /* Keep our session IDs and the audit session IDs in sync */
 843
 844                 if (asprintf(&id, "%"PRIu32, audit_id) < 0)
 845                         return -ENOMEM;
 846
 847                 /* Wut? There's already a session by this name and we didn't find it above? Weird, then let's
 848                  * not trust the audit data and let's better register a new ID */
 849                 if (hashmap_contains(m->sessions, id)) {
 850                         log_warning("Existing logind session ID %s used by new audit session, ignoring.", id);
 851                         audit_id = AUDIT_SESSION_INVALID;
 852                         id = mfree(id);
 853                 }
 854         }
 855
 856         if (!id) {
 857                 do {
 858                         id = mfree(id);
 859
 860                         if (asprintf(&id, "c%lu", ++m->session_counter) < 0)
 861                                 return -ENOMEM;
 862
 863                 } while (hashmap_contains(m->sessions, id));
 864         }
 865
 866         /* The generated names should not clash with 'auto' or 'self' */
 867         assert(!SESSION_IS_SELF(id));
 868         assert(!SESSION_IS_AUTO(id));
 869
 870         /* If we are not watching utmp already, try again */
 871         manager_reconnect_utmp(m);
 872
 873         r = manager_add_user_by_uid(m, uid, &user);
 874         if (r < 0)
 875                 goto fail;
 876
 877         r = manager_add_session(m, id, &session);
 878         if (r < 0)
 879                 goto fail;
 880
 881         session_set_user(session, user);
 882         r = session_set_leader(session, leader);
 883         if (r < 0)
 884                 goto fail;
 885
 886         session->original_type = session->type = t;
 887         session->class = c;
 888         session->remote = remote;
 889         session->vtnr = vtnr;
 890
 891         if (!isempty(tty)) {
 892                 session->tty = strdup(tty);
 893                 if (!session->tty) {
 894                         r = -ENOMEM;
 895                         goto fail;
 896                 }
 897
 898                 session->tty_validity = TTY_FROM_PAM;
 899         }
 900
 901         if (!isempty(display)) {
 902                 session->display = strdup(display);
 903                 if (!session->display) {
 904                         r = -ENOMEM;
 905                         goto fail;
 906                 }
 907         }
 908
 909         if (!isempty(remote_user)) {
 910                 session->remote_user = strdup(remote_user);
 911                 if (!session->remote_user) {
 912                         r = -ENOMEM;
 913                         goto fail;
 914                 }
 915         }
 916
 917         if (!isempty(remote_host)) {
 918                 session->remote_host = strdup(remote_host);
 919                 if (!session->remote_host) {
 920                         r = -ENOMEM;
 921                         goto fail;
 922                 }
 923         }
 924
 925         if (!isempty(service)) {
 926                 session->service = strdup(service);
 927                 if (!session->service) {
 928                         r = -ENOMEM;
 929                         goto fail;
 930                 }
 931         }
 932
 933         if (!isempty(desktop)) {
 934                 session->desktop = strdup(desktop);
 935                 if (!session->desktop) {
 936                         r = -ENOMEM;
 937                         goto fail;
 938                 }
 939         }
 940
 941         if (seat) {
 942                 r = seat_attach_session(seat, session);
 943                 if (r < 0)
 944                         goto fail;
 945         }
 946
 947         r = sd_bus_message_enter_container(message, 'a', "(sv)");
 948         if (r < 0)
 949                 goto fail;
 950
 951         r = session_start(session, message, error);
 952         if (r < 0)
 953                 goto fail;
 954
 955         r = sd_bus_message_exit_container(message);
 956         if (r < 0)
 957                 goto fail;
 958
 959         session->create_message = sd_bus_message_ref(message);
 960
 961         /* Now, let's wait until the slice unit and stuff got created. We send the reply back from
 962          * session_send_create_reply(). */
 963
 964         return 1;
 965
 966 fail:
 967         if (session)
 968                 session_add_to_gc_queue(session);
 969
 970         if (user)
 971                 user_add_to_gc_queue(user);
 972
 973         return r;
 974 }
 975
 976 static int method_release_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 977         Manager *m = userdata;
 978         Session *session;
 979         const char *name;
 980         int r;
 981
 982         assert(message);
 983         assert(m);
 984
 985         r = sd_bus_message_read(message, "s", &name);
 986         if (r < 0)
 987                 return r;
 988
 989         r = manager_get_session_from_creds(m, message, name, error, &session);
 990         if (r < 0)
 991                 return r;
 992
 993         r = session_release(session);
 994         if (r < 0)
 995                 return r;
 996
 997         return sd_bus_reply_method_return(message, NULL);
 998 }
 999
1000 static int method_activate_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1001         Manager *m = userdata;
1002         Session *session;
1003         const char *name;
1004         int r;
1005
1006         assert(message);
1007         assert(m);
1008
1009         r = sd_bus_message_read(message, "s", &name);
1010         if (r < 0)
1011                 return r;
1012
1013         r = manager_get_session_from_creds(m, message, name, error, &session);
1014         if (r < 0)
1015                 return r;
1016
1017         /* PolicyKit is done by bus_session_method_activate() */
1018
1019         return bus_session_method_activate(message, session, error);
1020 }
1021
1022 static int method_activate_session_on_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1023         const char *session_name, *seat_name;
1024         Manager *m = userdata;
1025         Session *session;
1026         Seat *seat;
1027         int r;
1028
1029         assert(message);
1030         assert(m);
1031
1032         /* Same as ActivateSession() but refuses to work if the seat doesn't match */
1033
1034         r = sd_bus_message_read(message, "ss", &session_name, &seat_name);
1035         if (r < 0)
1036                 return r;
1037
1038         r = manager_get_session_from_creds(m, message, session_name, error, &session);
1039         if (r < 0)
1040                 return r;
1041
1042         r = manager_get_seat_from_creds(m, message, seat_name, error, &seat);
1043         if (r < 0)
1044                 return r;
1045
1046         if (session->seat != seat)
1047                 return sd_bus_error_setf(error, BUS_ERROR_SESSION_NOT_ON_SEAT,
1048                                          "Session %s not on seat %s", session_name, seat_name);
1049
1050         r = bus_verify_polkit_async(
1051                         message,
1052                         CAP_SYS_ADMIN,
1053                         "org.freedesktop.login1.chvt",
1054                         NULL,
1055                         false,
1056                         UID_INVALID,
1057                         &m->polkit_registry,
1058                         error);
1059         if (r < 0)
1060                 return r;
1061         if (r == 0)
1062                 return 1; /* Will call us back */
1063
1064         r = session_activate(session);
1065         if (r < 0)
1066                 return r;
1067
1068         return sd_bus_reply_method_return(message, NULL);
1069 }
1070
1071 static int method_lock_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1072         Manager *m = userdata;
1073         Session *session;
1074         const char *name;
1075         int r;
1076
1077         assert(message);
1078         assert(m);
1079
1080         r = sd_bus_message_read(message, "s", &name);
1081         if (r < 0)
1082                 return r;
1083
1084         r = manager_get_session_from_creds(m, message, name, error, &session);
1085         if (r < 0)
1086                 return r;
1087
1088         return bus_session_method_lock(message, session, error);
1089 }
1090
1091 static int method_lock_sessions(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1092         Manager *m = userdata;
1093         int r;
1094
1095         assert(message);
1096         assert(m);
1097
1098         r = bus_verify_polkit_async(
1099                         message,
1100                         CAP_SYS_ADMIN,
1101                         "org.freedesktop.login1.lock-sessions",
1102                         NULL,
1103                         false,
1104                         UID_INVALID,
1105                         &m->polkit_registry,
1106                         error);
1107         if (r < 0)
1108                 return r;
1109         if (r == 0)
1110                 return 1; /* Will call us back */
1111
1112         r = session_send_lock_all(m, streq(sd_bus_message_get_member(message), "LockSessions"));
1113         if (r < 0)
1114                 return r;
1115
1116         return sd_bus_reply_method_return(message, NULL);
1117 }
1118
1119 static int method_kill_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1120         const char *name;
1121         Manager *m = userdata;
1122         Session *session;
1123         int r;
1124
1125         assert(message);
1126         assert(m);
1127
1128         r = sd_bus_message_read(message, "s", &name);
1129         if (r < 0)
1130                 return r;
1131
1132         r = manager_get_session_from_creds(m, message, name, error, &session);
1133         if (r < 0)
1134                 return r;
1135
1136         return bus_session_method_kill(message, session, error);
1137 }
1138
1139 static int method_kill_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1140         Manager *m = userdata;
1141         uint32_t uid;
1142         User *user;
1143         int r;
1144
1145         assert(message);
1146         assert(m);
1147
1148         r = sd_bus_message_read(message, "u", &uid);
1149         if (r < 0)
1150                 return r;
1151
1152         r = manager_get_user_from_creds(m, message, uid, error, &user);
1153         if (r < 0)
1154                 return r;
1155
1156         return bus_user_method_kill(message, user, error);
1157 }
1158
1159 static int method_terminate_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1160         Manager *m = userdata;
1161         const char *name;
1162         Session *session;
1163         int r;
1164
1165         assert(message);
1166         assert(m);
1167
1168         r = sd_bus_message_read(message, "s", &name);
1169         if (r < 0)
1170                 return r;
1171
1172         r = manager_get_session_from_creds(m, message, name, error, &session);
1173         if (r < 0)
1174                 return r;
1175
1176         return bus_session_method_terminate(message, session, error);
1177 }
1178
1179 static int method_terminate_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1180         Manager *m = userdata;
1181         uint32_t uid;
1182         User *user;
1183         int r;
1184
1185         assert(message);
1186         assert(m);
1187
1188         r = sd_bus_message_read(message, "u", &uid);
1189         if (r < 0)
1190                 return r;
1191
1192         r = manager_get_user_from_creds(m, message, uid, error, &user);
1193         if (r < 0)
1194                 return r;
1195
1196         return bus_user_method_terminate(message, user, error);
1197 }
1198
1199 static int method_terminate_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1200         Manager *m = userdata;
1201         const char *name;
1202         Seat *seat;
1203         int r;
1204
1205         assert(message);
1206         assert(m);
1207
1208         r = sd_bus_message_read(message, "s", &name);
1209         if (r < 0)
1210                 return r;
1211
1212         r = manager_get_seat_from_creds(m, message, name, error, &seat);
1213         if (r < 0)
1214                 return r;
1215
1216         return bus_seat_method_terminate(message, seat, error);
1217 }
1218
1219 static int method_set_user_linger(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1220         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
1221         _cleanup_free_ char *cc = NULL;
1222         Manager *m = userdata;
1223         int r, b, interactive;
1224         struct passwd *pw;
1225         const char *path;
1226         uint32_t uid, auth_uid;
1227
1228         assert(message);
1229         assert(m);
1230
1231         r = sd_bus_message_read(message, "ubb", &uid, &b, &interactive);
1232         if (r < 0)
1233                 return r;
1234
1235         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID |
1236                                                SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds);
1237         if (r < 0)
1238                 return r;
1239
1240         if (!uid_is_valid(uid)) {
1241                 /* Note that we get the owner UID of the session or user unit,
1242                  * not the actual client UID here! */
1243                 r = sd_bus_creds_get_owner_uid(creds, &uid);
1244                 if (r < 0)
1245                         return r;
1246         }
1247
1248         /* owner_uid is racy, so for authorization we must use euid */
1249         r = sd_bus_creds_get_euid(creds, &auth_uid);
1250         if (r < 0)
1251                 return r;
1252
1253         errno = 0;
1254         pw = getpwuid(uid);
1255         if (!pw)
1256                 return errno_or_else(ENOENT);
1257
1258         r = bus_verify_polkit_async(
1259                         message,
1260                         CAP_SYS_ADMIN,
1261                         uid == auth_uid ? "org.freedesktop.login1.set-self-linger" :
1262                                           "org.freedesktop.login1.set-user-linger",
1263                         NULL,
1264                         interactive,
1265                         UID_INVALID,
1266                         &m->polkit_registry,
1267                         error);
1268         if (r < 0)
1269                 return r;
1270         if (r == 0)
1271                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1272
1273         (void) mkdir_p_label("/var/lib/systemd", 0755);
1274         r = mkdir_safe_label("/var/lib/systemd/linger", 0755, 0, 0, MKDIR_WARN_MODE);
1275         if (r < 0)
1276                 return r;
1277
1278         cc = cescape(pw->pw_name);
1279         if (!cc)
1280                 return -ENOMEM;
1281
1282         path = strjoina("/var/lib/systemd/linger/", cc);
1283         if (b) {
1284                 User *u;
1285
1286                 r = touch(path);
1287                 if (r < 0)
1288                         return r;
1289
1290                 if (manager_add_user_by_uid(m, uid, &u) >= 0)
1291                         user_start(u);
1292
1293         } else {
1294                 User *u;
1295
1296                 r = unlink(path);
1297                 if (r < 0 && errno != ENOENT)
1298                         return -errno;
1299
1300                 u = hashmap_get(m->users, UID_TO_PTR(uid));
1301                 if (u)
1302                         user_add_to_gc_queue(u);
1303         }
1304
1305         return sd_bus_reply_method_return(message, NULL);
1306 }
1307
1308 static int trigger_device(Manager *m, sd_device *d) {
1309         _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL;
1310         int r;
1311
1312         assert(m);
1313
1314         r = sd_device_enumerator_new(&e);
1315         if (r < 0)
1316                 return r;
1317
1318         r = sd_device_enumerator_allow_uninitialized(e);
1319         if (r < 0)
1320                 return r;
1321
1322         if (d) {
1323                 r = sd_device_enumerator_add_match_parent(e, d);
1324                 if (r < 0)
1325                         return r;
1326         }
1327
1328         FOREACH_DEVICE(e, d) {
1329                 _cleanup_free_ char *t = NULL;
1330                 const char *p;
1331
1332                 r = sd_device_get_syspath(d, &p);
1333                 if (r < 0)
1334                         return r;
1335
1336                 t = path_join(p, "uevent");
1337                 if (!t)
1338                         return -ENOMEM;
1339
1340                 (void) write_string_file(t, "change", WRITE_STRING_FILE_DISABLE_BUFFER);
1341         }
1342
1343         return 0;
1344 }
1345
1346 static int attach_device(Manager *m, const char *seat, const char *sysfs) {
1347         _cleanup_(sd_device_unrefp) sd_device *d = NULL;
1348         _cleanup_free_ char *rule = NULL, *file = NULL;
1349         const char *id_for_seat;
1350         int r;
1351
1352         assert(m);
1353         assert(seat);
1354         assert(sysfs);
1355
1356         r = sd_device_new_from_syspath(&d, sysfs);
1357         if (r < 0)
1358                 return r;
1359
1360         if (sd_device_has_current_tag(d, "seat") <= 0)
1361                 return -ENODEV;
1362
1363         if (sd_device_get_property_value(d, "ID_FOR_SEAT", &id_for_seat) < 0)
1364                 return -ENODEV;
1365
1366         if (asprintf(&file, "/etc/udev/rules.d/72-seat-%s.rules", id_for_seat) < 0)
1367                 return -ENOMEM;
1368
1369         if (asprintf(&rule, "TAG==\"seat\", ENV{ID_FOR_SEAT}==\"%s\", ENV{ID_SEAT}=\"%s\"", id_for_seat, seat) < 0)
1370                 return -ENOMEM;
1371
1372         (void) mkdir_p_label("/etc/udev/rules.d", 0755);
1373         r = write_string_file_atomic_label(file, rule);
1374         if (r < 0)
1375                 return r;
1376
1377         return trigger_device(m, d);
1378 }
1379
1380 static int flush_devices(Manager *m) {
1381         _cleanup_closedir_ DIR *d;
1382
1383         assert(m);
1384
1385         d = opendir("/etc/udev/rules.d");
1386         if (!d) {
1387                 if (errno != ENOENT)
1388                         log_warning_errno(errno, "Failed to open /etc/udev/rules.d: %m");
1389         } else {
1390                 struct dirent *de;
1391
1392                 FOREACH_DIRENT_ALL(de, d, break) {
1393                         dirent_ensure_type(d, de);
1394                         if (!dirent_is_file(de))
1395                                 continue;
1396
1397                         if (!startswith(de->d_name, "72-seat-"))
1398                                 continue;
1399
1400                         if (!endswith(de->d_name, ".rules"))
1401                                 continue;
1402
1403                         if (unlinkat(dirfd(d), de->d_name, 0) < 0)
1404                                 log_warning_errno(errno, "Failed to unlink %s: %m", de->d_name);
1405                 }
1406         }
1407
1408         return trigger_device(m, NULL);
1409 }
1410
1411 static int method_attach_device(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1412         const char *sysfs, *seat;
1413         Manager *m = userdata;
1414         int interactive, r;
1415
1416         assert(message);
1417         assert(m);
1418
1419         r = sd_bus_message_read(message, "ssb", &seat, &sysfs, &interactive);
1420         if (r < 0)
1421                 return r;
1422
1423         if (!path_is_normalized(sysfs))
1424                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not normalized", sysfs);
1425         if (!path_startswith(sysfs, "/sys"))
1426                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not in /sys", sysfs);
1427
1428         if (SEAT_IS_SELF(seat) || SEAT_IS_AUTO(seat)) {
1429                 Seat *found;
1430
1431                 r = manager_get_seat_from_creds(m, message, seat, error, &found);
1432                 if (r < 0)
1433                         return r;
1434
1435                 seat = found->id;
1436
1437         } else if (!seat_name_is_valid(seat)) /* Note that a seat does not have to exist yet for this operation to succeed */
1438                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Seat name %s is not valid", seat);
1439
1440         r = bus_verify_polkit_async(
1441                         message,
1442                         CAP_SYS_ADMIN,
1443                         "org.freedesktop.login1.attach-device",
1444                         NULL,
1445                         interactive,
1446                         UID_INVALID,
1447                         &m->polkit_registry,
1448                         error);
1449         if (r < 0)
1450                 return r;
1451         if (r == 0)
1452                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1453
1454         r = attach_device(m, seat, sysfs);
1455         if (r < 0)
1456                 return r;
1457
1458         return sd_bus_reply_method_return(message, NULL);
1459 }
1460
1461 static int method_flush_devices(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1462         Manager *m = userdata;
1463         int interactive, r;
1464
1465         assert(message);
1466         assert(m);
1467
1468         r = sd_bus_message_read(message, "b", &interactive);
1469         if (r < 0)
1470                 return r;
1471
1472         r = bus_verify_polkit_async(
1473                         message,
1474                         CAP_SYS_ADMIN,
1475                         "org.freedesktop.login1.flush-devices",
1476                         NULL,
1477                         interactive,
1478                         UID_INVALID,
1479                         &m->polkit_registry,
1480                         error);
1481         if (r < 0)
1482                 return r;
1483         if (r == 0)
1484                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1485
1486         r = flush_devices(m);
1487         if (r < 0)
1488                 return r;
1489
1490         return sd_bus_reply_method_return(message, NULL);
1491 }
1492
1493 static int have_multiple_sessions(
1494                 Manager *m,
1495                 uid_t uid) {
1496
1497         Session *session;
1498
1499         assert(m);
1500
1501         /* Check for other users' sessions. Greeter sessions do not
1502          * count, and non-login sessions do not count either. */
1503         HASHMAP_FOREACH(session, m->sessions)
1504                 if (session->class == SESSION_USER &&
1505                     session->user->user_record->uid != uid)
1506                         return true;
1507
1508         return false;
1509 }
1510
1511 static int bus_manager_log_shutdown(
1512                 Manager *m,
1513                 const char *unit_name) {
1514
1515         const char *p, *q;
1516
1517         assert(m);
1518         assert(unit_name);
1519
1520         if (streq(unit_name, SPECIAL_POWEROFF_TARGET)) {
1521                 p = "MESSAGE=System is powering down";
1522                 q = "SHUTDOWN=power-off";
1523         } else if (streq(unit_name, SPECIAL_REBOOT_TARGET)) {
1524                 p = "MESSAGE=System is rebooting";
1525                 q = "SHUTDOWN=reboot";
1526         } else if (streq(unit_name, SPECIAL_HALT_TARGET)) {
1527                 p = "MESSAGE=System is halting";
1528                 q = "SHUTDOWN=halt";
1529         } else if (streq(unit_name, SPECIAL_KEXEC_TARGET)) {
1530                 p = "MESSAGE=System is rebooting with kexec";
1531                 q = "SHUTDOWN=kexec";
1532         } else {
1533                 p = "MESSAGE=System is shutting down";
1534                 q = NULL;
1535         }
1536
1537         if (isempty(m->wall_message))
1538                 p = strjoina(p, ".");
1539         else
1540                 p = strjoina(p, " (", m->wall_message, ").");
1541
1542         return log_struct(LOG_NOTICE,
1543                           "MESSAGE_ID=" SD_MESSAGE_SHUTDOWN_STR,
1544                           p,
1545                           q);
1546 }
1547
1548 static int lid_switch_ignore_handler(sd_event_source *e, uint64_t usec, void *userdata) {
1549         Manager *m = userdata;
1550
1551         assert(e);
1552         assert(m);
1553
1554         m->lid_switch_ignore_event_source = sd_event_source_unref(m->lid_switch_ignore_event_source);
1555         return 0;
1556 }
1557
1558 int manager_set_lid_switch_ignore(Manager *m, usec_t until) {
1559         int r;
1560
1561         assert(m);
1562
1563         if (until <= now(CLOCK_MONOTONIC))
1564                 return 0;
1565
1566         /* We want to ignore the lid switch for a while after each
1567          * suspend, and after boot-up. Hence let's install a timer for
1568          * this. As long as the event source exists we ignore the lid
1569          * switch. */
1570
1571         if (m->lid_switch_ignore_event_source) {
1572                 usec_t u;
1573
1574                 r = sd_event_source_get_time(m->lid_switch_ignore_event_source, &u);
1575                 if (r < 0)
1576                         return r;
1577
1578                 if (until <= u)
1579                         return 0;
1580
1581                 r = sd_event_source_set_time(m->lid_switch_ignore_event_source, until);
1582         } else
1583                 r = sd_event_add_time(
1584                                 m->event,
1585                                 &m->lid_switch_ignore_event_source,
1586                                 CLOCK_MONOTONIC,
1587                                 until, 0,
1588                                 lid_switch_ignore_handler, m);
1589
1590         return r;
1591 }
1592
1593 static int send_prepare_for(Manager *m, InhibitWhat w, bool _active) {
1594         int active = _active;
1595
1596         assert(m);
1597         assert(IN_SET(w, INHIBIT_SHUTDOWN, INHIBIT_SLEEP));
1598
1599         return sd_bus_emit_signal(m->bus,
1600                                   "/org/freedesktop/login1",
1601                                   "org.freedesktop.login1.Manager",
1602                                   w == INHIBIT_SHUTDOWN ? "PrepareForShutdown" : "PrepareForSleep",
1603                                   "b",
1604                                   active);
1605 }
1606
1607 static int execute_shutdown_or_sleep(
1608                 Manager *m,
1609                 InhibitWhat w,
1610                 const char *unit_name,
1611                 sd_bus_error *error) {
1612
1613         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1614         const char *p;
1615         int r;
1616
1617         assert(m);
1618         assert(w > 0);
1619         assert(w < _INHIBIT_WHAT_MAX);
1620         assert(unit_name);
1621
1622         if (w == INHIBIT_SHUTDOWN)
1623                 bus_manager_log_shutdown(m, unit_name);
1624
1625         r = bus_call_method(
1626                         m->bus,
1627                         bus_systemd_mgr,
1628                         "StartUnit",
1629                         error,
1630                         &reply,
1631                         "ss", unit_name, "replace-irreversibly");
1632         if (r < 0)
1633                 goto error;
1634
1635         r = sd_bus_message_read(reply, "o", &p);
1636         if (r < 0)
1637                 goto error;
1638
1639         r = free_and_strdup(&m->action_job, p);
1640         if (r < 0)
1641                 goto error;
1642
1643         m->action_unit = unit_name;
1644         m->action_what = w;
1645
1646         /* Make sure the lid switch is ignored for a while */
1647         manager_set_lid_switch_ignore(m, now(CLOCK_MONOTONIC) + m->holdoff_timeout_usec);
1648
1649         return 0;
1650
1651 error:
1652         /* Tell people that they now may take a lock again */
1653         (void) send_prepare_for(m, w, false);
1654
1655         return r;
1656 }
1657
1658 int manager_dispatch_delayed(Manager *manager, bool timeout) {
1659
1660         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1661         Inhibitor *offending = NULL;
1662         int r;
1663
1664         assert(manager);
1665
1666         if (manager->action_what == 0 || manager->action_job)
1667                 return 0;
1668
1669         if (manager_is_inhibited(manager, manager->action_what, INHIBIT_DELAY, NULL, false, false, 0, &offending)) {
1670                 _cleanup_free_ char *comm = NULL, *u = NULL;
1671
1672                 if (!timeout)
1673                         return 0;
1674
1675                 (void) get_process_comm(offending->pid, &comm);
1676                 u = uid_to_name(offending->uid);
1677
1678                 log_notice("Delay lock is active (UID "UID_FMT"/%s, PID "PID_FMT"/%s) but inhibitor timeout is reached.",
1679                            offending->uid, strna(u),
1680                            offending->pid, strna(comm));
1681         }
1682
1683         /* Actually do the operation */
1684         r = execute_shutdown_or_sleep(manager, manager->action_what, manager->action_unit, &error);
1685         if (r < 0) {
1686                 log_warning("Error during inhibitor-delayed operation (already returned success to client): %s",
1687                             bus_error_message(&error, r));
1688
1689                 manager->action_unit = NULL;
1690                 manager->action_what = 0;
1691                 return r;
1692         }
1693
1694         return 1;
1695 }
1696
1697 static int manager_inhibit_timeout_handler(
1698                         sd_event_source *s,
1699                         uint64_t usec,
1700                         void *userdata) {
1701
1702         Manager *manager = userdata;
1703         int r;
1704
1705         assert(manager);
1706         assert(manager->inhibit_timeout_source == s);
1707
1708         r = manager_dispatch_delayed(manager, true);
1709         return (r < 0) ? r : 0;
1710 }
1711
1712 static int delay_shutdown_or_sleep(
1713                 Manager *m,
1714                 InhibitWhat w,
1715                 const char *unit_name) {
1716
1717         int r;
1718
1719         assert(m);
1720         assert(w >= 0);
1721         assert(w < _INHIBIT_WHAT_MAX);
1722         assert(unit_name);
1723
1724         if (m->inhibit_timeout_source) {
1725                 r = sd_event_source_set_time_relative(m->inhibit_timeout_source, m->inhibit_delay_max);
1726                 if (r < 0)
1727                         return log_error_errno(r, "sd_event_source_set_time_relative() failed: %m");
1728
1729                 r = sd_event_source_set_enabled(m->inhibit_timeout_source, SD_EVENT_ONESHOT);
1730                 if (r < 0)
1731                         return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
1732         } else {
1733                 r = sd_event_add_time_relative(
1734                                 m->event,
1735                                 &m->inhibit_timeout_source,
1736                                 CLOCK_MONOTONIC, m->inhibit_delay_max, 0,
1737                                 manager_inhibit_timeout_handler, m);
1738                 if (r < 0)
1739                         return r;
1740         }
1741
1742         m->action_unit = unit_name;
1743         m->action_what = w;
1744
1745         return 0;
1746 }
1747
1748 int bus_manager_shutdown_or_sleep_now_or_later(
1749                 Manager *m,
1750                 const char *unit_name,
1751                 InhibitWhat w,
1752                 sd_bus_error *error) {
1753
1754         _cleanup_free_ char *load_state = NULL;
1755         bool delayed;
1756         int r;
1757
1758         assert(m);
1759         assert(unit_name);
1760         assert(w > 0);
1761         assert(w < _INHIBIT_WHAT_MAX);
1762         assert(!m->action_job);
1763
1764         r = unit_load_state(m->bus, unit_name, &load_state);
1765         if (r < 0)
1766                 return r;
1767
1768         if (!streq(load_state, "loaded"))
1769                 return log_notice_errno(SYNTHETIC_ERRNO(EACCES),
1770                                         "Unit %s is %s, refusing operation.",
1771                                         unit_name, load_state);
1772
1773         /* Tell everybody to prepare for shutdown/sleep */
1774         (void) send_prepare_for(m, w, true);
1775
1776         delayed =
1777                 m->inhibit_delay_max > 0 &&
1778                 manager_is_inhibited(m, w, INHIBIT_DELAY, NULL, false, false, 0, NULL);
1779
1780         if (delayed)
1781                 /* Shutdown is delayed, keep in mind what we
1782                  * want to do, and start a timeout */
1783                 r = delay_shutdown_or_sleep(m, w, unit_name);
1784         else
1785                 /* Shutdown is not delayed, execute it
1786                  * immediately */
1787                 r = execute_shutdown_or_sleep(m, w, unit_name, error);
1788
1789         return r;
1790 }
1791
1792 static int verify_shutdown_creds(
1793                 Manager *m,
1794                 sd_bus_message *message,
1795                 InhibitWhat w,
1796                 const char *action,
1797                 const char *action_multiple_sessions,
1798                 const char *action_ignore_inhibit,
1799                 uint64_t flags,
1800                 sd_bus_error *error) {
1801
1802         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
1803         bool multiple_sessions, blocked, interactive;
1804         uid_t uid;
1805         int r;
1806
1807         assert(m);
1808         assert(message);
1809         assert(w >= 0);
1810         assert(w <= _INHIBIT_WHAT_MAX);
1811
1812         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
1813         if (r < 0)
1814                 return r;
1815
1816         r = sd_bus_creds_get_euid(creds, &uid);
1817         if (r < 0)
1818                 return r;
1819
1820         r = have_multiple_sessions(m, uid);
1821         if (r < 0)
1822                 return r;
1823
1824         multiple_sessions = r > 0;
1825         blocked = manager_is_inhibited(m, w, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
1826         interactive = flags & SD_LOGIND_INTERACTIVE;
1827
1828         if (multiple_sessions && action_multiple_sessions) {
1829                 r = bus_verify_polkit_async(message, CAP_SYS_BOOT, action_multiple_sessions, NULL, interactive, UID_INVALID, &m->polkit_registry, error);
1830                 if (r < 0)
1831                         return r;
1832                 if (r == 0)
1833                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1834         }
1835
1836         if (blocked) {
1837                 /* We don't check polkit for root here, because you can't be more privileged than root */
1838                 if (uid == 0 && (flags & SD_LOGIND_ROOT_CHECK_INHIBITORS))
1839                         return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED,
1840                                                  "Access denied to root due to active block inhibitor");
1841
1842                 if (action_ignore_inhibit) {
1843                         r = bus_verify_polkit_async(message, CAP_SYS_BOOT, action_ignore_inhibit, NULL, interactive, UID_INVALID, &m->polkit_registry, error);
1844                         if (r < 0)
1845                                 return r;
1846                         if (r == 0)
1847                                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1848                 }
1849         }
1850
1851         if (!multiple_sessions && !blocked && action) {
1852                 r = bus_verify_polkit_async(message, CAP_SYS_BOOT, action, NULL, interactive, UID_INVALID, &m->polkit_registry, error);
1853                 if (r < 0)
1854                         return r;
1855                 if (r == 0)
1856                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1857         }
1858
1859         return 0;
1860 }
1861
1862 static int method_do_shutdown_or_sleep(
1863                 Manager *m,
1864                 sd_bus_message *message,
1865                 const char *unit_name,
1866                 InhibitWhat w,
1867                 const char *action,
1868                 const char *action_multiple_sessions,
1869                 const char *action_ignore_inhibit,
1870                 const char *sleep_verb,
1871                 bool with_flags,
1872                 sd_bus_error *error) {
1873
1874         uint64_t flags;
1875         int r;
1876
1877         assert(m);
1878         assert(message);
1879         assert(unit_name);
1880         assert(w >= 0);
1881         assert(w <= _INHIBIT_WHAT_MAX);
1882
1883         if (with_flags) {
1884                 /* New style method: with flags parameter (and interactive bool in the bus message header) */
1885                 r = sd_bus_message_read(message, "t", &flags);
1886                 if (r < 0)
1887                         return r;
1888                 if ((flags & ~SD_LOGIND_SHUTDOWN_AND_SLEEP_FLAGS_PUBLIC) != 0)
1889                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid flags parameter");
1890         } else {
1891                 /* Old style method: no flags parameter, but interactive bool passed as boolean in
1892                  * payload. Let's convert this argument to the new-style flags parameter for our internal
1893                  * use. */
1894                 int interactive;
1895
1896                 r = sd_bus_message_read(message, "b", &interactive);
1897                 if (r < 0)
1898                         return r;
1899
1900                 flags = interactive ? SD_LOGIND_INTERACTIVE : 0;
1901         }
1902
1903         /* Don't allow multiple jobs being executed at the same time */
1904         if (m->action_what > 0)
1905                 return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS,
1906                                          "There's already a shutdown or sleep operation in progress");
1907
1908         if (sleep_verb) {
1909                 r = can_sleep(sleep_verb);
1910                 if (r == -ENOSPC)
1911                         return sd_bus_error_set(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
1912                                                 "Not enough swap space for hibernation");
1913                 if (r == 0)
1914                         return sd_bus_error_setf(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
1915                                                  "Sleep verb \"%s\" not supported", sleep_verb);
1916                 if (r < 0)
1917                         return r;
1918         }
1919
1920         r = verify_shutdown_creds(m, message, w, action, action_multiple_sessions,
1921                                   action_ignore_inhibit, flags, error);
1922         if (r != 0)
1923                 return r;
1924
1925         r = bus_manager_shutdown_or_sleep_now_or_later(m, unit_name, w, error);
1926         if (r < 0)
1927                 return r;
1928
1929         return sd_bus_reply_method_return(message, NULL);
1930 }
1931
1932 static int method_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1933         Manager *m = userdata;
1934
1935         return method_do_shutdown_or_sleep(
1936                         m, message,
1937                         SPECIAL_POWEROFF_TARGET,
1938                         INHIBIT_SHUTDOWN,
1939                         "org.freedesktop.login1.power-off",
1940                         "org.freedesktop.login1.power-off-multiple-sessions",
1941                         "org.freedesktop.login1.power-off-ignore-inhibit",
1942                         NULL,
1943                         sd_bus_message_is_method_call(message, NULL, "PowerOffWithFlags"),
1944                         error);
1945 }
1946
1947 static int method_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1948         Manager *m = userdata;
1949
1950         return method_do_shutdown_or_sleep(
1951                         m, message,
1952                         SPECIAL_REBOOT_TARGET,
1953                         INHIBIT_SHUTDOWN,
1954                         "org.freedesktop.login1.reboot",
1955                         "org.freedesktop.login1.reboot-multiple-sessions",
1956                         "org.freedesktop.login1.reboot-ignore-inhibit",
1957                         NULL,
1958                         sd_bus_message_is_method_call(message, NULL, "RebootWithFlags"),
1959                         error);
1960 }
1961
1962 static int method_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1963         Manager *m = userdata;
1964
1965         return method_do_shutdown_or_sleep(
1966                         m, message,
1967                         SPECIAL_HALT_TARGET,
1968                         INHIBIT_SHUTDOWN,
1969                         "org.freedesktop.login1.halt",
1970                         "org.freedesktop.login1.halt-multiple-sessions",
1971                         "org.freedesktop.login1.halt-ignore-inhibit",
1972                         NULL,
1973                         sd_bus_message_is_method_call(message, NULL, "HaltWithFlags"),
1974                         error);
1975 }
1976
1977 static int method_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1978         Manager *m = userdata;
1979
1980         return method_do_shutdown_or_sleep(
1981                         m, message,
1982                         SPECIAL_SUSPEND_TARGET,
1983                         INHIBIT_SLEEP,
1984                         "org.freedesktop.login1.suspend",
1985                         "org.freedesktop.login1.suspend-multiple-sessions",
1986                         "org.freedesktop.login1.suspend-ignore-inhibit",
1987                         "suspend",
1988                         sd_bus_message_is_method_call(message, NULL, "SuspendWithFlags"),
1989                         error);
1990 }
1991
1992 static int method_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1993         Manager *m = userdata;
1994
1995         return method_do_shutdown_or_sleep(
1996                         m, message,
1997                         SPECIAL_HIBERNATE_TARGET,
1998                         INHIBIT_SLEEP,
1999                         "org.freedesktop.login1.hibernate",
2000                         "org.freedesktop.login1.hibernate-multiple-sessions",
2001                         "org.freedesktop.login1.hibernate-ignore-inhibit",
2002                         "hibernate",
2003                         sd_bus_message_is_method_call(message, NULL, "HibernateWithFlags"),
2004                         error);
2005 }
2006
2007 static int method_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2008         Manager *m = userdata;
2009
2010         return method_do_shutdown_or_sleep(
2011                         m, message,
2012                         SPECIAL_HYBRID_SLEEP_TARGET,
2013                         INHIBIT_SLEEP,
2014                         "org.freedesktop.login1.hibernate",
2015                         "org.freedesktop.login1.hibernate-multiple-sessions",
2016                         "org.freedesktop.login1.hibernate-ignore-inhibit",
2017                         "hybrid-sleep",
2018                         sd_bus_message_is_method_call(message, NULL, "HybridSleepWithFlags"),
2019                         error);
2020 }
2021
2022 static int method_suspend_then_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2023         Manager *m = userdata;
2024
2025         return method_do_shutdown_or_sleep(
2026                         m, message,
2027                         SPECIAL_SUSPEND_THEN_HIBERNATE_TARGET,
2028                         INHIBIT_SLEEP,
2029                         "org.freedesktop.login1.hibernate",
2030                         "org.freedesktop.login1.hibernate-multiple-sessions",
2031                         "org.freedesktop.login1.hibernate-ignore-inhibit",
2032                         "hybrid-sleep",
2033                         sd_bus_message_is_method_call(message, NULL, "SuspendThenHibernateWithFlags"),
2034                         error);
2035 }
2036
2037 static int nologin_timeout_handler(
2038                         sd_event_source *s,
2039                         uint64_t usec,
2040                         void *userdata) {
2041
2042         Manager *m = userdata;
2043
2044         log_info("Creating /run/nologin, blocking further logins...");
2045
2046         m->unlink_nologin =
2047                 create_shutdown_run_nologin_or_warn() >= 0;
2048
2049         return 0;
2050 }
2051
2052 static int update_schedule_file(Manager *m) {
2053         _cleanup_free_ char *temp_path = NULL;
2054         _cleanup_fclose_ FILE *f = NULL;
2055         int r;
2056
2057         assert(m);
2058
2059         r = mkdir_safe_label("/run/systemd/shutdown", 0755, 0, 0, MKDIR_WARN_MODE);
2060         if (r < 0)
2061                 return log_error_errno(r, "Failed to create shutdown subdirectory: %m");
2062
2063         r = fopen_temporary("/run/systemd/shutdown/scheduled", &f, &temp_path);
2064         if (r < 0)
2065                 return log_error_errno(r, "Failed to save information about scheduled shutdowns: %m");
2066
2067         (void) fchmod(fileno(f), 0644);
2068
2069         fprintf(f,
2070                 "USEC="USEC_FMT"\n"
2071                 "WARN_WALL=%i\n"
2072                 "MODE=%s\n",
2073                 m->scheduled_shutdown_timeout,
2074                 m->enable_wall_messages,
2075                 m->scheduled_shutdown_type);
2076
2077         if (!isempty(m->wall_message)) {
2078                 _cleanup_free_ char *t;
2079
2080                 t = cescape(m->wall_message);
2081                 if (!t) {
2082                         r = -ENOMEM;
2083                         goto fail;
2084                 }
2085
2086                 fprintf(f, "WALL_MESSAGE=%s\n", t);
2087         }
2088
2089         r = fflush_and_check(f);
2090         if (r < 0)
2091                 goto fail;
2092
2093         if (rename(temp_path, "/run/systemd/shutdown/scheduled") < 0) {
2094                 r = -errno;
2095                 goto fail;
2096         }
2097
2098         return 0;
2099
2100 fail:
2101         (void) unlink(temp_path);
2102         (void) unlink("/run/systemd/shutdown/scheduled");
2103
2104         return log_error_errno(r, "Failed to write information about scheduled shutdowns: %m");
2105 }
2106
2107 static void reset_scheduled_shutdown(Manager *m) {
2108         assert(m);
2109
2110         m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2111         m->wall_message_timeout_source = sd_event_source_unref(m->wall_message_timeout_source);
2112         m->nologin_timeout_source = sd_event_source_unref(m->nologin_timeout_source);
2113
2114         m->scheduled_shutdown_type = mfree(m->scheduled_shutdown_type);
2115         m->scheduled_shutdown_timeout = 0;
2116         m->shutdown_dry_run = false;
2117
2118         if (m->unlink_nologin) {
2119                 (void) unlink_or_warn("/run/nologin");
2120                 m->unlink_nologin = false;
2121         }
2122
2123         (void) unlink("/run/systemd/shutdown/scheduled");
2124 }
2125
2126 static int manager_scheduled_shutdown_handler(
2127                         sd_event_source *s,
2128                         uint64_t usec,
2129                         void *userdata) {
2130
2131         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
2132         Manager *m = userdata;
2133         const char *target;
2134         int r;
2135
2136         assert(m);
2137
2138         if (isempty(m->scheduled_shutdown_type))
2139                 return 0;
2140
2141         if (streq(m->scheduled_shutdown_type, "poweroff"))
2142                 target = SPECIAL_POWEROFF_TARGET;
2143         else if (streq(m->scheduled_shutdown_type, "reboot"))
2144                 target = SPECIAL_REBOOT_TARGET;
2145         else if (streq(m->scheduled_shutdown_type, "halt"))
2146                 target = SPECIAL_HALT_TARGET;
2147         else
2148                 assert_not_reached("unexpected shutdown type");
2149
2150         /* Don't allow multiple jobs being executed at the same time */
2151         if (m->action_what > 0) {
2152                 r = -EALREADY;
2153                 log_error("Scheduled shutdown to %s failed: shutdown or sleep operation already in progress", target);
2154                 goto error;
2155         }
2156
2157         if (m->shutdown_dry_run) {
2158                 /* We do not process delay inhibitors here.  Otherwise, we
2159                  * would have to be considered "in progress" (like the check
2160                  * above) for some seconds after our admin has seen the final
2161                  * wall message. */
2162
2163                 bus_manager_log_shutdown(m, target);
2164                 log_info("Running in dry run, suppressing action.");
2165                 reset_scheduled_shutdown(m);
2166
2167                 return 0;
2168         }
2169
2170         r = bus_manager_shutdown_or_sleep_now_or_later(m, target, INHIBIT_SHUTDOWN, &error);
2171         if (r < 0) {
2172                 log_error_errno(r, "Scheduled shutdown to %s failed: %m", target);
2173                 goto error;
2174         }
2175
2176         return 0;
2177
2178 error:
2179         reset_scheduled_shutdown(m);
2180         return r;
2181 }
2182
2183 static int method_schedule_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2184         Manager *m = userdata;
2185         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2186         const char *action_multiple_sessions = NULL;
2187         const char *action_ignore_inhibit = NULL;
2188         const char *action = NULL;
2189         uint64_t elapse;
2190         char *type;
2191         int r;
2192         bool dry_run = false;
2193
2194         assert(m);
2195         assert(message);
2196
2197         r = sd_bus_message_read(message, "st", &type, &elapse);
2198         if (r < 0)
2199                 return r;
2200
2201         if (startswith(type, "dry-")) {
2202                 type += 4;
2203                 dry_run = true;
2204         }
2205
2206         if (streq(type, "poweroff")) {
2207                 action = "org.freedesktop.login1.power-off";
2208                 action_multiple_sessions = "org.freedesktop.login1.power-off-multiple-sessions";
2209                 action_ignore_inhibit = "org.freedesktop.login1.power-off-ignore-inhibit";
2210         } else if (streq(type, "reboot")) {
2211                 action = "org.freedesktop.login1.reboot";
2212                 action_multiple_sessions = "org.freedesktop.login1.reboot-multiple-sessions";
2213                 action_ignore_inhibit = "org.freedesktop.login1.reboot-ignore-inhibit";
2214         } else if (streq(type, "halt")) {
2215                 action = "org.freedesktop.login1.halt";
2216                 action_multiple_sessions = "org.freedesktop.login1.halt-multiple-sessions";
2217                 action_ignore_inhibit = "org.freedesktop.login1.halt-ignore-inhibit";
2218         } else
2219                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unsupported shutdown type");
2220
2221         r = verify_shutdown_creds(m, message, INHIBIT_SHUTDOWN, action, action_multiple_sessions,
2222                                   action_ignore_inhibit, 0, error);
2223         if (r != 0)
2224                 return r;
2225
2226         if (m->scheduled_shutdown_timeout_source) {
2227                 r = sd_event_source_set_time(m->scheduled_shutdown_timeout_source, elapse);
2228                 if (r < 0)
2229                         return log_error_errno(r, "sd_event_source_set_time() failed: %m");
2230
2231                 r = sd_event_source_set_enabled(m->scheduled_shutdown_timeout_source, SD_EVENT_ONESHOT);
2232                 if (r < 0)
2233                         return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
2234         } else {
2235                 r = sd_event_add_time(m->event, &m->scheduled_shutdown_timeout_source,
2236                                       CLOCK_REALTIME, elapse, 0, manager_scheduled_shutdown_handler, m);
2237                 if (r < 0)
2238                         return log_error_errno(r, "sd_event_add_time() failed: %m");
2239         }
2240
2241         r = free_and_strdup(&m->scheduled_shutdown_type, type);
2242         if (r < 0) {
2243                 m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2244                 return log_oom();
2245         }
2246
2247         m->shutdown_dry_run = dry_run;
2248
2249         if (m->nologin_timeout_source) {
2250                 r = sd_event_source_set_time(m->nologin_timeout_source, elapse);
2251                 if (r < 0)
2252                         return log_error_errno(r, "sd_event_source_set_time() failed: %m");
2253
2254                 r = sd_event_source_set_enabled(m->nologin_timeout_source, SD_EVENT_ONESHOT);
2255                 if (r < 0)
2256                         return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
2257         } else {
2258                 r = sd_event_add_time(m->event, &m->nologin_timeout_source,
2259                                       CLOCK_REALTIME, elapse - 5 * USEC_PER_MINUTE, 0, nologin_timeout_handler, m);
2260                 if (r < 0)
2261                         return log_error_errno(r, "sd_event_add_time() failed: %m");
2262         }
2263
2264         m->scheduled_shutdown_timeout = elapse;
2265
2266         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
2267         if (r >= 0) {
2268                 const char *tty = NULL;
2269
2270                 (void) sd_bus_creds_get_uid(creds, &m->scheduled_shutdown_uid);
2271                 (void) sd_bus_creds_get_tty(creds, &tty);
2272
2273                 r = free_and_strdup(&m->scheduled_shutdown_tty, tty);
2274                 if (r < 0) {
2275                         m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2276                         return log_oom();
2277                 }
2278         }
2279
2280         r = manager_setup_wall_message_timer(m);
2281         if (r < 0)
2282                 return r;
2283
2284         r = update_schedule_file(m);
2285         if (r < 0)
2286                 return r;
2287
2288         return sd_bus_reply_method_return(message, NULL);
2289 }
2290
2291 static int method_cancel_scheduled_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2292         Manager *m = userdata;
2293         bool cancelled;
2294
2295         assert(m);
2296         assert(message);
2297
2298         cancelled = m->scheduled_shutdown_type != NULL;
2299         reset_scheduled_shutdown(m);
2300
2301         if (cancelled && m->enable_wall_messages) {
2302                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2303                 _cleanup_free_ char *username = NULL;
2304                 const char *tty = NULL;
2305                 uid_t uid = 0;
2306                 int r;
2307
2308                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
2309                 if (r >= 0) {
2310                         (void) sd_bus_creds_get_uid(creds, &uid);
2311                         (void) sd_bus_creds_get_tty(creds, &tty);
2312                 }
2313
2314                 username = uid_to_name(uid);
2315                 utmp_wall("The system shutdown has been cancelled",
2316                           username, tty, logind_wall_tty_filter, m);
2317         }
2318
2319         return sd_bus_reply_method_return(message, "b", cancelled);
2320 }
2321
2322 static int method_can_shutdown_or_sleep(
2323                 Manager *m,
2324                 sd_bus_message *message,
2325                 InhibitWhat w,
2326                 const char *action,
2327                 const char *action_multiple_sessions,
2328                 const char *action_ignore_inhibit,
2329                 const char *sleep_verb,
2330                 sd_bus_error *error) {
2331
2332         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2333         HandleAction handle;
2334         bool multiple_sessions, challenge, blocked;
2335         const char *result = NULL;
2336         uid_t uid;
2337         int r;
2338
2339         assert(m);
2340         assert(message);
2341         assert(w >= 0);
2342         assert(w <= _INHIBIT_WHAT_MAX);
2343         assert(action);
2344         assert(action_multiple_sessions);
2345         assert(action_ignore_inhibit);
2346
2347         if (sleep_verb) {
2348                 r = can_sleep(sleep_verb);
2349                 if (IN_SET(r,  0, -ENOSPC))
2350                         return sd_bus_reply_method_return(message, "s", "na");
2351                 if (r < 0)
2352                         return r;
2353         }
2354
2355         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
2356         if (r < 0)
2357                 return r;
2358
2359         r = sd_bus_creds_get_euid(creds, &uid);
2360         if (r < 0)
2361                 return r;
2362
2363         r = have_multiple_sessions(m, uid);
2364         if (r < 0)
2365                 return r;
2366
2367         multiple_sessions = r > 0;
2368         blocked = manager_is_inhibited(m, w, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
2369
2370         handle = handle_action_from_string(sleep_verb);
2371         if (handle >= 0) {
2372                 const char *target;
2373
2374                 target = manager_target_for_action(handle);
2375                 if (target) {
2376                         _cleanup_free_ char *load_state = NULL;
2377
2378                         r = unit_load_state(m->bus, target, &load_state);
2379                         if (r < 0)
2380                                 return r;
2381
2382                         if (!streq(load_state, "loaded")) {
2383                                 result = "no";
2384                                 goto finish;
2385                         }
2386                 }
2387         }
2388
2389         if (multiple_sessions) {
2390                 r = bus_test_polkit(message, CAP_SYS_BOOT, action_multiple_sessions, NULL, UID_INVALID, &challenge, error);
2391                 if (r < 0)
2392                         return r;
2393
2394                 if (r > 0)
2395                         result = "yes";
2396                 else if (challenge)
2397                         result = "challenge";
2398                 else
2399                         result = "no";
2400         }
2401
2402         if (blocked) {
2403                 r = bus_test_polkit(message, CAP_SYS_BOOT, action_ignore_inhibit, NULL, UID_INVALID, &challenge, error);
2404                 if (r < 0)
2405                         return r;
2406
2407                 if (r > 0) {
2408                         if (!result)
2409                                 result = "yes";
2410                 } else if (challenge) {
2411                         if (!result || streq(result, "yes"))
2412                                 result = "challenge";
2413                 } else
2414                         result = "no";
2415         }
2416
2417         if (!multiple_sessions && !blocked) {
2418                 /* If neither inhibit nor multiple sessions
2419                  * apply then just check the normal policy */
2420
2421                 r = bus_test_polkit(message, CAP_SYS_BOOT, action, NULL, UID_INVALID, &challenge, error);
2422                 if (r < 0)
2423                         return r;
2424
2425                 if (r > 0)
2426                         result = "yes";
2427                 else if (challenge)
2428                         result = "challenge";
2429                 else
2430                         result = "no";
2431         }
2432
2433  finish:
2434         return sd_bus_reply_method_return(message, "s", result);
2435 }
2436
2437 static int method_can_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2438         Manager *m = userdata;
2439
2440         return method_can_shutdown_or_sleep(
2441                         m, message,
2442                         INHIBIT_SHUTDOWN,
2443                         "org.freedesktop.login1.power-off",
2444                         "org.freedesktop.login1.power-off-multiple-sessions",
2445                         "org.freedesktop.login1.power-off-ignore-inhibit",
2446                         NULL,
2447                         error);
2448 }
2449
2450 static int method_can_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2451         Manager *m = userdata;
2452
2453         return method_can_shutdown_or_sleep(
2454                         m, message,
2455                         INHIBIT_SHUTDOWN,
2456                         "org.freedesktop.login1.reboot",
2457                         "org.freedesktop.login1.reboot-multiple-sessions",
2458                         "org.freedesktop.login1.reboot-ignore-inhibit",
2459                         NULL,
2460                         error);
2461 }
2462
2463 static int method_can_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2464         Manager *m = userdata;
2465
2466         return method_can_shutdown_or_sleep(
2467                         m, message,
2468                         INHIBIT_SHUTDOWN,
2469                         "org.freedesktop.login1.halt",
2470                         "org.freedesktop.login1.halt-multiple-sessions",
2471                         "org.freedesktop.login1.halt-ignore-inhibit",
2472                         NULL,
2473                         error);
2474 }
2475
2476 static int method_can_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2477         Manager *m = userdata;
2478
2479         return method_can_shutdown_or_sleep(
2480                         m, message,
2481                         INHIBIT_SLEEP,
2482                         "org.freedesktop.login1.suspend",
2483                         "org.freedesktop.login1.suspend-multiple-sessions",
2484                         "org.freedesktop.login1.suspend-ignore-inhibit",
2485                         "suspend",
2486                         error);
2487 }
2488
2489 static int method_can_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2490         Manager *m = userdata;
2491
2492         return method_can_shutdown_or_sleep(
2493                         m, message,
2494                         INHIBIT_SLEEP,
2495                         "org.freedesktop.login1.hibernate",
2496                         "org.freedesktop.login1.hibernate-multiple-sessions",
2497                         "org.freedesktop.login1.hibernate-ignore-inhibit",
2498                         "hibernate",
2499                         error);
2500 }
2501
2502 static int method_can_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2503         Manager *m = userdata;
2504
2505         return method_can_shutdown_or_sleep(
2506                         m, message,
2507                         INHIBIT_SLEEP,
2508                         "org.freedesktop.login1.hibernate",
2509                         "org.freedesktop.login1.hibernate-multiple-sessions",
2510                         "org.freedesktop.login1.hibernate-ignore-inhibit",
2511                         "hybrid-sleep",
2512                         error);
2513 }
2514
2515 static int method_can_suspend_then_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2516         Manager *m = userdata;
2517
2518         return method_can_shutdown_or_sleep(
2519                         m, message,
2520                         INHIBIT_SLEEP,
2521                         "org.freedesktop.login1.hibernate",
2522                         "org.freedesktop.login1.hibernate-multiple-sessions",
2523                         "org.freedesktop.login1.hibernate-ignore-inhibit",
2524                         "suspend-then-hibernate",
2525                         error);
2526 }
2527
2528 static int property_get_reboot_parameter(
2529                 sd_bus *bus,
2530                 const char *path,
2531                 const char *interface,
2532                 const char *property,
2533                 sd_bus_message *reply,
2534                 void *userdata,
2535                 sd_bus_error *error) {
2536         _cleanup_free_ char *parameter = NULL;
2537         int r;
2538
2539         assert(bus);
2540         assert(reply);
2541         assert(userdata);
2542
2543         r = read_reboot_parameter(&parameter);
2544         if (r < 0)
2545                 return r;
2546
2547         return sd_bus_message_append(reply, "s", parameter);
2548 }
2549
2550 static int method_set_reboot_parameter(
2551                 sd_bus_message *message,
2552                 void *userdata,
2553                 sd_bus_error *error) {
2554
2555         Manager *m = userdata;
2556         const char *arg;
2557         int r;
2558
2559         assert(message);
2560         assert(m);
2561
2562         r = sd_bus_message_read(message, "s", &arg);
2563         if (r < 0)
2564                 return r;
2565
2566         r = detect_container();
2567         if (r < 0)
2568                 return r;
2569         if (r > 0)
2570                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED,
2571                                          "Reboot parameter not supported in containers, refusing.");
2572
2573         r = bus_verify_polkit_async(message,
2574                                     CAP_SYS_ADMIN,
2575                                     "org.freedesktop.login1.set-reboot-parameter",
2576                                     NULL,
2577                                     false,
2578                                     UID_INVALID,
2579                                     &m->polkit_registry,
2580                                     error);
2581         if (r < 0)
2582                 return r;
2583         if (r == 0)
2584                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2585
2586         r = update_reboot_parameter_and_warn(arg, false);
2587         if (r < 0)
2588                 return r;
2589
2590         return sd_bus_reply_method_return(message, NULL);
2591 }
2592
2593 static int method_can_reboot_parameter(
2594                 sd_bus_message *message,
2595                 void *userdata,
2596                 sd_bus_error *error) {
2597
2598         _unused_ Manager *m = userdata;
2599         int r;
2600
2601         assert(message);
2602         assert(m);
2603
2604         r = detect_container();
2605         if (r < 0)
2606                 return r;
2607         if (r > 0) /* Inside containers, specifying a reboot parameter, doesn't make much sense */
2608                 return sd_bus_reply_method_return(message, "s", "na");
2609
2610         return return_test_polkit(
2611                         message,
2612                         CAP_SYS_ADMIN,
2613                         "org.freedesktop.login1.set-reboot-parameter",
2614                         NULL,
2615                         UID_INVALID,
2616                         error);
2617 }
2618
2619 static int property_get_reboot_to_firmware_setup(
2620                 sd_bus *bus,
2621                 const char *path,
2622                 const char *interface,
2623                 const char *property,
2624                 sd_bus_message *reply,
2625                 void *userdata,
2626                 sd_bus_error *error) {
2627         int r;
2628
2629         assert(bus);
2630         assert(reply);
2631         assert(userdata);
2632
2633         r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
2634         if (r == -ENXIO) {
2635                 /* EFI case: let's see what is currently configured in the EFI variables */
2636                 r = efi_get_reboot_to_firmware();
2637                 if (r < 0 && r != -EOPNOTSUPP)
2638                         log_warning_errno(r, "Failed to determine reboot-to-firmware-setup state: %m");
2639         } else if (r < 0)
2640                 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
2641         else if (r > 0) {
2642                 /* Non-EFI case: let's see whether /run/systemd/reboot-to-firmware-setup exists. */
2643                 if (access("/run/systemd/reboot-to-firmware-setup", F_OK) < 0) {
2644                         if (errno != ENOENT)
2645                                 log_warning_errno(errno, "Failed to check whether /run/systemd/reboot-to-firmware-setup exists: %m");
2646
2647                         r = false;
2648                 } else
2649                         r = true;
2650         }
2651
2652         return sd_bus_message_append(reply, "b", r > 0);
2653 }
2654
2655 static int method_set_reboot_to_firmware_setup(
2656                 sd_bus_message *message,
2657                 void *userdata,
2658                 sd_bus_error *error) {
2659
2660         Manager *m = userdata;
2661         bool use_efi;
2662         int b, r;
2663
2664         assert(message);
2665         assert(m);
2666
2667         r = sd_bus_message_read(message, "b", &b);
2668         if (r < 0)
2669                 return r;
2670
2671         r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
2672         if (r == -ENXIO) {
2673                 /* EFI case: let's see what the firmware supports */
2674
2675                 r = efi_reboot_to_firmware_supported();
2676                 if (r == -EOPNOTSUPP)
2677                         return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Firmware does not support boot into firmware.");
2678                 if (r < 0)
2679                         return r;
2680
2681                 use_efi = true;
2682
2683         } else if (r <= 0) {
2684                 /* non-EFI case: $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP is set to off */
2685
2686                 if (r < 0)
2687                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
2688
2689                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Firmware does not support boot into firmware.");
2690         } else
2691                 /* non-EFI case: $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP is set to on */
2692                 use_efi = false;
2693
2694         r = bus_verify_polkit_async(message,
2695                                     CAP_SYS_ADMIN,
2696                                     "org.freedesktop.login1.set-reboot-to-firmware-setup",
2697                                     NULL,
2698                                     false,
2699                                     UID_INVALID,
2700                                     &m->polkit_registry,
2701                                     error);
2702         if (r < 0)
2703                 return r;
2704         if (r == 0)
2705                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2706
2707         if (use_efi) {
2708                 r = efi_set_reboot_to_firmware(b);
2709                 if (r < 0)
2710                         return r;
2711         } else {
2712                 if (b) {
2713                         r = touch("/run/systemd/reboot-to-firmware-setup");
2714                         if (r < 0)
2715                                 return r;
2716                 } else {
2717                         if (unlink("/run/systemd/reboot-to-firmware-setup") < 0 && errno != ENOENT)
2718                                 return -errno;
2719                 }
2720         }
2721
2722         return sd_bus_reply_method_return(message, NULL);
2723 }
2724
2725 static int method_can_reboot_to_firmware_setup(
2726                 sd_bus_message *message,
2727                 void *userdata,
2728                 sd_bus_error *error) {
2729
2730         _unused_ Manager *m = userdata;
2731         int r;
2732
2733         assert(message);
2734         assert(m);
2735
2736         r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
2737         if (r == -ENXIO) {
2738                 /* EFI case: let's see what the firmware supports */
2739
2740                 r = efi_reboot_to_firmware_supported();
2741                 if (r < 0) {
2742                         if (r != -EOPNOTSUPP)
2743                                 log_warning_errno(r, "Failed to determine whether reboot to firmware is supported: %m");
2744
2745                         return sd_bus_reply_method_return(message, "s", "na");
2746                 }
2747
2748         } else if (r <= 0) {
2749                 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP */
2750
2751                 if (r < 0)
2752                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
2753
2754                 return sd_bus_reply_method_return(message, "s", "na");
2755         }
2756
2757         return return_test_polkit(
2758                         message,
2759                         CAP_SYS_ADMIN,
2760                         "org.freedesktop.login1.set-reboot-to-firmware-setup",
2761                         NULL,
2762                         UID_INVALID,
2763                         error);
2764 }
2765
2766 static int property_get_reboot_to_boot_loader_menu(
2767                 sd_bus *bus,
2768                 const char *path,
2769                 const char *interface,
2770                 const char *property,
2771                 sd_bus_message *reply,
2772                 void *userdata,
2773                 sd_bus_error *error) {
2774
2775         uint64_t x = UINT64_MAX;
2776         int r;
2777
2778         assert(bus);
2779         assert(reply);
2780         assert(userdata);
2781
2782         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
2783         if (r == -ENXIO) {
2784                 /* EFI case: returns the current value of LoaderConfigTimeoutOneShot. Three cases are distuingished:
2785                  *
2786                  *     1. Variable not set, boot into boot loader menu is not enabled (we return UINT64_MAX to the user)
2787                  *     2. Variable set to "0", boot into boot loader menu is enabled with no timeout (we return 0 to the user)
2788                  *     3. Variable set to numeric value formatted in ASCII, boot into boot loader menu with the specified timeout in seconds
2789                  */
2790
2791                 r = efi_loader_get_config_timeout_one_shot(&x);
2792                 if (r < 0) {
2793                         if (r != -ENOENT)
2794                                 log_warning_errno(r, "Failed to read LoaderConfigTimeoutOneShot variable, ignoring: %m");
2795                 }
2796
2797         } else if (r < 0)
2798                 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
2799         else if (r > 0) {
2800                 _cleanup_free_ char *v = NULL;
2801
2802                 /* Non-EFI case, let's process /run/systemd/reboot-to-boot-loader-menu. */
2803
2804                 r = read_one_line_file("/run/systemd/reboot-to-boot-loader-menu", &v);
2805                 if (r < 0) {
2806                         if (r != -ENOENT)
2807                                 log_warning_errno(r, "Failed to read /run/systemd/reboot-to-boot-loader-menu: %m");
2808                 } else {
2809                         r = safe_atou64(v, &x);
2810                         if (r < 0)
2811                                 log_warning_errno(r, "Failed to parse /run/systemd/reboot-to-boot-loader-menu: %m");
2812                 }
2813         }
2814
2815         return sd_bus_message_append(reply, "t", x);
2816 }
2817
2818 static int method_set_reboot_to_boot_loader_menu(
2819                 sd_bus_message *message,
2820                 void *userdata,
2821                 sd_bus_error *error) {
2822
2823         Manager *m = userdata;
2824         bool use_efi;
2825         uint64_t x;
2826         int r;
2827
2828         assert(message);
2829         assert(m);
2830
2831         r = sd_bus_message_read(message, "t", &x);
2832         if (r < 0)
2833                 return r;
2834
2835         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
2836         if (r == -ENXIO) {
2837                 uint64_t features;
2838
2839                 /* EFI case: let's see if booting into boot loader menu is supported. */
2840
2841                 r = efi_loader_get_features(&features);
2842                 if (r < 0)
2843                         log_warning_errno(r, "Failed to determine whether reboot to boot loader menu is supported: %m");
2844                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT))
2845                         return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader does not support boot into boot loader menu.");
2846
2847                 use_efi = true;
2848
2849         } else if (r <= 0) {
2850                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU is set to off */
2851
2852                 if (r < 0)
2853                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
2854
2855                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader does not support boot into boot loader menu.");
2856         } else
2857                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU is set to on */
2858                 use_efi = false;
2859
2860         r = bus_verify_polkit_async(message,
2861                                     CAP_SYS_ADMIN,
2862                                     "org.freedesktop.login1.set-reboot-to-boot-loader-menu",
2863                                     NULL,
2864                                     false,
2865                                     UID_INVALID,
2866                                     &m->polkit_registry,
2867                                     error);
2868         if (r < 0)
2869                 return r;
2870         if (r == 0)
2871                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2872
2873         if (use_efi) {
2874                 if (x == UINT64_MAX)
2875                         r = efi_set_variable(EFI_VENDOR_LOADER, "LoaderConfigTimeoutOneShot", NULL, 0);
2876                 else {
2877                         char buf[DECIMAL_STR_MAX(uint64_t) + 1];
2878                         xsprintf(buf, "%" PRIu64, DIV_ROUND_UP(x, USEC_PER_SEC)); /* second granularity */
2879
2880                         r = efi_set_variable_string(EFI_VENDOR_LOADER, "LoaderConfigTimeoutOneShot", buf);
2881                 }
2882                 if (r < 0)
2883                         return r;
2884         } else {
2885                 if (x == UINT64_MAX) {
2886                         if (unlink("/run/systemd/reboot-to-boot-loader-menu") < 0 && errno != ENOENT)
2887                                 return -errno;
2888                 } else {
2889                         char buf[DECIMAL_STR_MAX(uint64_t) + 1];
2890
2891                         xsprintf(buf, "%" PRIu64, x); /* µs granularity */
2892
2893                         r = write_string_file_atomic_label("/run/systemd/reboot-to-boot-loader-menu", buf);
2894                         if (r < 0)
2895                                 return r;
2896                 }
2897         }
2898
2899         return sd_bus_reply_method_return(message, NULL);
2900 }
2901
2902 static int method_can_reboot_to_boot_loader_menu(
2903                 sd_bus_message *message,
2904                 void *userdata,
2905                 sd_bus_error *error) {
2906
2907         _unused_ Manager *m = userdata;
2908         int r;
2909
2910         assert(message);
2911         assert(m);
2912
2913         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
2914         if (r == -ENXIO) {
2915                 uint64_t features = 0;
2916
2917                 /* EFI case, let's see if booting into boot loader menu is supported. */
2918
2919                 r = efi_loader_get_features(&features);
2920                 if (r < 0)
2921                         log_warning_errno(r, "Failed to determine whether reboot to boot loader menu is supported: %m");
2922                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT))
2923                         return sd_bus_reply_method_return(message, "s", "na");
2924
2925         } else if (r <= 0) {
2926                 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU */
2927
2928                 if (r < 0)
2929                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
2930
2931                 return sd_bus_reply_method_return(message, "s", "na");
2932         }
2933
2934         return return_test_polkit(
2935                         message,
2936                         CAP_SYS_ADMIN,
2937                         "org.freedesktop.login1.set-reboot-to-boot-loader-menu",
2938                         NULL,
2939                         UID_INVALID,
2940                         error);
2941 }
2942
2943 static int property_get_reboot_to_boot_loader_entry(
2944                 sd_bus *bus,
2945                 const char *path,
2946                 const char *interface,
2947                 const char *property,
2948                 sd_bus_message *reply,
2949                 void *userdata,
2950                 sd_bus_error *error) {
2951
2952         _cleanup_free_ char *v = NULL;
2953         Manager *m = userdata;
2954         const char *x = NULL;
2955         int r;
2956
2957         assert(bus);
2958         assert(reply);
2959         assert(m);
2960
2961         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
2962         if (r == -ENXIO) {
2963                 /* EFI case: let's read the LoaderEntryOneShot variable */
2964
2965                 r = efi_loader_update_entry_one_shot_cache(&m->efi_loader_entry_one_shot, &m->efi_loader_entry_one_shot_stat);
2966                 if (r < 0) {
2967                         if (r != -ENOENT)
2968                                 log_warning_errno(r, "Failed to read LoaderEntryOneShot variable, ignoring: %m");
2969                 } else
2970                         x = m->efi_loader_entry_one_shot;
2971
2972         } else if (r < 0)
2973                 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
2974         else if (r > 0) {
2975
2976                 /* Non-EFI case, let's process /run/systemd/reboot-to-boot-loader-entry. */
2977
2978                 r = read_one_line_file("/run/systemd/reboot-to-boot-loader-entry", &v);
2979                 if (r < 0) {
2980                         if (r != -ENOENT)
2981                                 log_warning_errno(r, "Failed to read /run/systemd/reboot-to-boot-loader-entry, ignoring: %m");
2982                 } else if (!efi_loader_entry_name_valid(v))
2983                         log_warning("/run/systemd/reboot-to-boot-loader-entry is not valid, ignoring.");
2984                 else
2985                         x = v;
2986         }
2987
2988         return sd_bus_message_append(reply, "s", x);
2989 }
2990
2991 static int boot_loader_entry_exists(Manager *m, const char *id) {
2992         _cleanup_(boot_config_free) BootConfig config = {};
2993         int r;
2994
2995         assert(m);
2996         assert(id);
2997
2998         r = boot_entries_load_config_auto(NULL, NULL, &config);
2999         if (r < 0 && r != -ENOKEY) /* don't complain if no GPT is found, hence skip ENOKEY */
3000                 return r;
3001
3002         r = manager_read_efi_boot_loader_entries(m);
3003         if (r >= 0)
3004                 (void) boot_entries_augment_from_loader(&config, m->efi_boot_loader_entries, true);
3005
3006         return boot_config_has_entry(&config, id);
3007 }
3008
3009 static int method_set_reboot_to_boot_loader_entry(
3010                 sd_bus_message *message,
3011                 void *userdata,
3012                 sd_bus_error *error) {
3013
3014         Manager *m = userdata;
3015         bool use_efi;
3016         const char *v;
3017         int r;
3018
3019         assert(message);
3020         assert(m);
3021
3022         r = sd_bus_message_read(message, "s", &v);
3023         if (r < 0)
3024                 return r;
3025
3026         if (isempty(v))
3027                 v = NULL;
3028         else if (efi_loader_entry_name_valid(v)) {
3029                 r = boot_loader_entry_exists(m, v);
3030                 if (r < 0)
3031                         return r;
3032                 if (r == 0)
3033                         return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader entry '%s' is not known.", v);
3034         } else
3035                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Boot loader entry name '%s' is not valid, refusing.", v);
3036
3037         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
3038         if (r == -ENXIO) {
3039                 uint64_t features;
3040
3041                 /* EFI case: let's see if booting into boot loader entry is supported. */
3042
3043                 r = efi_loader_get_features(&features);
3044                 if (r < 0)
3045                         log_warning_errno(r, "Failed to determine whether reboot into boot loader entry is supported: %m");
3046                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_ENTRY_ONESHOT))
3047                         return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Loader does not support boot into boot loader entry.");
3048
3049                 use_efi = true;
3050
3051         } else if (r <= 0) {
3052                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY is set to off */
3053
3054                 if (r < 0)
3055                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
3056
3057                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Loader does not support boot into boot loader entry.");
3058         } else
3059                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY is set to on */
3060                 use_efi = false;
3061
3062         r = bus_verify_polkit_async(message,
3063                                     CAP_SYS_ADMIN,
3064                                     "org.freedesktop.login1.set-reboot-to-boot-loader-entry",
3065                                     NULL,
3066                                     false,
3067                                     UID_INVALID,
3068                                     &m->polkit_registry,
3069                                     error);
3070         if (r < 0)
3071                 return r;
3072         if (r == 0)
3073                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
3074
3075         if (use_efi) {
3076                 if (isempty(v))
3077                         /* Delete item */
3078                         r = efi_set_variable(EFI_VENDOR_LOADER, "LoaderEntryOneShot", NULL, 0);
3079                 else
3080                         r = efi_set_variable_string(EFI_VENDOR_LOADER, "LoaderEntryOneShot", v);
3081                 if (r < 0)
3082                         return r;
3083         } else {
3084                 if (isempty(v)) {
3085                         if (unlink("/run/systemd/reboot-to-boot-loader-entry") < 0 && errno != ENOENT)
3086                                 return -errno;
3087                 } else {
3088                         r = write_string_file_atomic_label("/run/systemd/reboot-boot-to-loader-entry", v);
3089                         if (r < 0)
3090                                 return r;
3091                 }
3092         }
3093
3094         return sd_bus_reply_method_return(message, NULL);
3095 }
3096
3097 static int method_can_reboot_to_boot_loader_entry(
3098                 sd_bus_message *message,
3099                 void *userdata,
3100                 sd_bus_error *error) {
3101
3102         _unused_ Manager *m = userdata;
3103         int r;
3104
3105         assert(message);
3106         assert(m);
3107
3108         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
3109         if (r == -ENXIO) {
3110                 uint64_t features = 0;
3111
3112                 /* EFI case, let's see if booting into boot loader entry is supported. */
3113
3114                 r = efi_loader_get_features(&features);
3115                 if (r < 0)
3116                         log_warning_errno(r, "Failed to determine whether reboot to boot loader entry is supported: %m");
3117                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_ENTRY_ONESHOT))
3118                         return sd_bus_reply_method_return(message, "s", "na");
3119
3120         } else if (r <= 0) {
3121                 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY */
3122
3123                 if (r < 0)
3124                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
3125
3126                 return sd_bus_reply_method_return(message, "s", "na");
3127         }
3128
3129         return return_test_polkit(
3130                         message,
3131                         CAP_SYS_ADMIN,
3132                         "org.freedesktop.login1.set-reboot-to-boot-loader-entry",
3133                         NULL,
3134                         UID_INVALID,
3135                         error);
3136 }
3137
3138 static int property_get_boot_loader_entries(
3139                 sd_bus *bus,
3140                 const char *path,
3141                 const char *interface,
3142                 const char *property,
3143                 sd_bus_message *reply,
3144                 void *userdata,
3145                 sd_bus_error *error) {
3146
3147         _cleanup_(boot_config_free) BootConfig config = {};
3148         Manager *m = userdata;
3149         size_t i;
3150         int r;
3151
3152         assert(bus);
3153         assert(reply);
3154         assert(m);
3155
3156         r = boot_entries_load_config_auto(NULL, NULL, &config);
3157         if (r < 0 && r != -ENOKEY) /* don't complain if there's no GPT found */
3158                 return r;
3159
3160         r = manager_read_efi_boot_loader_entries(m);
3161         if (r >= 0)
3162                 (void) boot_entries_augment_from_loader(&config, m->efi_boot_loader_entries, true);
3163
3164         r = sd_bus_message_open_container(reply, 'a', "s");
3165         if (r < 0)
3166                 return r;
3167
3168         for (i = 0; i < config.n_entries; i++) {
3169                 BootEntry *e = config.entries + i;
3170
3171                 r = sd_bus_message_append(reply, "s", e->id);
3172                 if (r < 0)
3173                         return r;
3174         }
3175
3176         return sd_bus_message_close_container(reply);
3177 }
3178
3179 static int method_set_wall_message(
3180                 sd_bus_message *message,
3181                 void *userdata,
3182                 sd_bus_error *error) {
3183
3184         int r;
3185         Manager *m = userdata;
3186         char *wall_message;
3187         unsigned enable_wall_messages;
3188
3189         assert(message);
3190         assert(m);
3191
3192         r = sd_bus_message_read(message, "sb", &wall_message, &enable_wall_messages);
3193         if (r < 0)
3194                 return r;
3195
3196         /* Short-circuit the operation if the desired state is already in place, to
3197          * avoid an unnecessary polkit permission check. */
3198         if (streq_ptr(m->wall_message, empty_to_null(wall_message)) &&
3199             m->enable_wall_messages == enable_wall_messages)
3200                 goto done;
3201
3202         r = bus_verify_polkit_async(message,
3203                                     CAP_SYS_ADMIN,
3204                                     "org.freedesktop.login1.set-wall-message",
3205                                     NULL,
3206                                     false,
3207                                     UID_INVALID,
3208                                     &m->polkit_registry,
3209                                     error);
3210         if (r < 0)
3211                 return r;
3212         if (r == 0)
3213                 return 1; /* Will call us back */
3214
3215         r = free_and_strdup(&m->wall_message, empty_to_null(wall_message));
3216         if (r < 0)
3217                 return log_oom();
3218
3219         m->enable_wall_messages = enable_wall_messages;
3220
3221  done:
3222         return sd_bus_reply_method_return(message, NULL);
3223 }
3224
3225 static int method_inhibit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3226         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
3227         const char *who, *why, *what, *mode;
3228         _cleanup_free_ char *id = NULL;
3229         _cleanup_close_ int fifo_fd = -1;
3230         Manager *m = userdata;
3231         InhibitMode mm;
3232         InhibitWhat w;
3233         pid_t pid;
3234         uid_t uid;
3235         int r;
3236
3237         assert(message);
3238         assert(m);
3239
3240         r = sd_bus_message_read(message, "ssss", &what, &who, &why, &mode);
3241         if (r < 0)
3242                 return r;
3243
3244         w = inhibit_what_from_string(what);
3245         if (w <= 0)
3246                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3247                                          "Invalid what specification %s", what);
3248
3249         mm = inhibit_mode_from_string(mode);
3250         if (mm < 0)
3251                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3252                                          "Invalid mode specification %s", mode);
3253
3254         /* Delay is only supported for shutdown/sleep */
3255         if (mm == INHIBIT_DELAY && (w & ~(INHIBIT_SHUTDOWN|INHIBIT_SLEEP)))
3256                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3257                                          "Delay inhibitors only supported for shutdown and sleep");
3258
3259         /* Don't allow taking delay locks while we are already
3260          * executing the operation. We shouldn't create the impression
3261          * that the lock was successful if the machine is about to go
3262          * down/suspend any moment. */
3263         if (m->action_what & w)
3264                 return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS,
3265                                          "The operation inhibition has been requested for is already running");
3266
3267         r = bus_verify_polkit_async(
3268                         message,
3269                         CAP_SYS_BOOT,
3270                         w == INHIBIT_SHUTDOWN             ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-shutdown" : "org.freedesktop.login1.inhibit-delay-shutdown") :
3271                         w == INHIBIT_SLEEP                ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-sleep"    : "org.freedesktop.login1.inhibit-delay-sleep") :
3272                         w == INHIBIT_IDLE                 ? "org.freedesktop.login1.inhibit-block-idle" :
3273                         w == INHIBIT_HANDLE_POWER_KEY     ? "org.freedesktop.login1.inhibit-handle-power-key" :
3274                         w == INHIBIT_HANDLE_SUSPEND_KEY   ? "org.freedesktop.login1.inhibit-handle-suspend-key" :
3275                         w == INHIBIT_HANDLE_REBOOT_KEY    ? "org.freedesktop.login1.inhibit-handle-reboot-key" :
3276                         w == INHIBIT_HANDLE_HIBERNATE_KEY ? "org.freedesktop.login1.inhibit-handle-hibernate-key" :
3277                                                             "org.freedesktop.login1.inhibit-handle-lid-switch",
3278                         NULL,
3279                         false,
3280                         UID_INVALID,
3281                         &m->polkit_registry,
3282                         error);
3283         if (r < 0)
3284                 return r;
3285         if (r == 0)
3286                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
3287
3288         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID|SD_BUS_CREDS_PID, &creds);
3289         if (r < 0)
3290                 return r;
3291
3292         r = sd_bus_creds_get_euid(creds, &uid);
3293         if (r < 0)
3294                 return r;
3295
3296         r = sd_bus_creds_get_pid(creds, &pid);
3297         if (r < 0)
3298                 return r;
3299
3300         if (hashmap_size(m->inhibitors) >= m->inhibitors_max)
3301                 return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED,
3302                                          "Maximum number of inhibitors (%" PRIu64 ") reached, refusing further inhibitors.",
3303                                          m->inhibitors_max);
3304
3305         do {
3306                 id = mfree(id);
3307
3308                 if (asprintf(&id, "%lu", ++m->inhibit_counter) < 0)
3309                         return -ENOMEM;
3310
3311         } while (hashmap_get(m->inhibitors, id));
3312
3313         _cleanup_(inhibitor_freep) Inhibitor *i = NULL;
3314         r = manager_add_inhibitor(m, id, &i);
3315         if (r < 0)
3316                 return r;
3317
3318         i->what = w;
3319         i->mode = mm;
3320         i->pid = pid;
3321         i->uid = uid;
3322         i->why = strdup(why);
3323         i->who = strdup(who);
3324
3325         if (!i->why || !i->who)
3326                 return -ENOMEM;
3327
3328         fifo_fd = inhibitor_create_fifo(i);
3329         if (fifo_fd < 0)
3330                 return fifo_fd;
3331
3332         r = inhibitor_start(i);
3333         if (r < 0)
3334                 return r;
3335         TAKE_PTR(i);
3336
3337         return sd_bus_reply_method_return(message, "h", fifo_fd);
3338 }
3339
3340 static const sd_bus_vtable manager_vtable[] = {
3341         SD_BUS_VTABLE_START(0),
3342
3343         SD_BUS_WRITABLE_PROPERTY("EnableWallMessages", "b", NULL, NULL, offsetof(Manager, enable_wall_messages), 0),
3344         SD_BUS_WRITABLE_PROPERTY("WallMessage", "s", NULL, NULL, offsetof(Manager, wall_message), 0),
3345
3346         SD_BUS_PROPERTY("NAutoVTs", "u", NULL, offsetof(Manager, n_autovts), SD_BUS_VTABLE_PROPERTY_CONST),
3347         SD_BUS_PROPERTY("KillOnlyUsers", "as", NULL, offsetof(Manager, kill_only_users), SD_BUS_VTABLE_PROPERTY_CONST),
3348         SD_BUS_PROPERTY("KillExcludeUsers", "as", NULL, offsetof(Manager, kill_exclude_users), SD_BUS_VTABLE_PROPERTY_CONST),
3349         SD_BUS_PROPERTY("KillUserProcesses", "b", NULL, offsetof(Manager, kill_user_processes), SD_BUS_VTABLE_PROPERTY_CONST),
3350         SD_BUS_PROPERTY("RebootParameter", "s", property_get_reboot_parameter, 0, 0),
3351         SD_BUS_PROPERTY("RebootToFirmwareSetup", "b", property_get_reboot_to_firmware_setup, 0, 0),
3352         SD_BUS_PROPERTY("RebootToBootLoaderMenu", "t", property_get_reboot_to_boot_loader_menu, 0, 0),
3353         SD_BUS_PROPERTY("RebootToBootLoaderEntry", "s", property_get_reboot_to_boot_loader_entry, 0, 0),
3354         SD_BUS_PROPERTY("BootLoaderEntries", "as", property_get_boot_loader_entries, 0, SD_BUS_VTABLE_PROPERTY_CONST),
3355         SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3356         SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3357         SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3358         SD_BUS_PROPERTY("BlockInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3359         SD_BUS_PROPERTY("DelayInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3360         SD_BUS_PROPERTY("InhibitDelayMaxUSec", "t", NULL, offsetof(Manager, inhibit_delay_max), SD_BUS_VTABLE_PROPERTY_CONST),
3361         SD_BUS_PROPERTY("UserStopDelayUSec", "t", NULL, offsetof(Manager, user_stop_delay), SD_BUS_VTABLE_PROPERTY_CONST),
3362         SD_BUS_PROPERTY("HandlePowerKey", "s", property_get_handle_action, offsetof(Manager, handle_power_key), SD_BUS_VTABLE_PROPERTY_CONST),
3363         SD_BUS_PROPERTY("HandleSuspendKey", "s", property_get_handle_action, offsetof(Manager, handle_suspend_key), SD_BUS_VTABLE_PROPERTY_CONST),
3364         SD_BUS_PROPERTY("HandleHibernateKey", "s", property_get_handle_action, offsetof(Manager, handle_hibernate_key), SD_BUS_VTABLE_PROPERTY_CONST),
3365         SD_BUS_PROPERTY("HandleLidSwitch", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch), SD_BUS_VTABLE_PROPERTY_CONST),
3366         SD_BUS_PROPERTY("HandleLidSwitchExternalPower", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch_ep), SD_BUS_VTABLE_PROPERTY_CONST),
3367         SD_BUS_PROPERTY("HandleLidSwitchDocked", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch_docked), SD_BUS_VTABLE_PROPERTY_CONST),
3368         SD_BUS_PROPERTY("HoldoffTimeoutUSec", "t", NULL, offsetof(Manager, holdoff_timeout_usec), SD_BUS_VTABLE_PROPERTY_CONST),
3369         SD_BUS_PROPERTY("IdleAction", "s", property_get_handle_action, offsetof(Manager, idle_action), SD_BUS_VTABLE_PROPERTY_CONST),
3370         SD_BUS_PROPERTY("IdleActionUSec", "t", NULL, offsetof(Manager, idle_action_usec), SD_BUS_VTABLE_PROPERTY_CONST),
3371         SD_BUS_PROPERTY("PreparingForShutdown", "b", property_get_preparing, 0, 0),
3372         SD_BUS_PROPERTY("PreparingForSleep", "b", property_get_preparing, 0, 0),
3373         SD_BUS_PROPERTY("ScheduledShutdown", "(st)", property_get_scheduled_shutdown, 0, 0),
3374         SD_BUS_PROPERTY("Docked", "b", property_get_docked, 0, 0),
3375         SD_BUS_PROPERTY("LidClosed", "b", property_get_lid_closed, 0, 0),
3376         SD_BUS_PROPERTY("OnExternalPower", "b", property_get_on_external_power, 0, 0),
3377         SD_BUS_PROPERTY("RemoveIPC", "b", bus_property_get_bool, offsetof(Manager, remove_ipc), SD_BUS_VTABLE_PROPERTY_CONST),
3378         SD_BUS_PROPERTY("RuntimeDirectorySize", "t", NULL, offsetof(Manager, runtime_dir_size), SD_BUS_VTABLE_PROPERTY_CONST),
3379         SD_BUS_PROPERTY("RuntimeDirectoryInodesMax", "t", NULL, offsetof(Manager, runtime_dir_inodes), SD_BUS_VTABLE_PROPERTY_CONST),
3380         SD_BUS_PROPERTY("InhibitorsMax", "t", NULL, offsetof(Manager, inhibitors_max), SD_BUS_VTABLE_PROPERTY_CONST),
3381         SD_BUS_PROPERTY("NCurrentInhibitors", "t", property_get_hashmap_size, offsetof(Manager, inhibitors), 0),
3382         SD_BUS_PROPERTY("SessionsMax", "t", NULL, offsetof(Manager, sessions_max), SD_BUS_VTABLE_PROPERTY_CONST),
3383         SD_BUS_PROPERTY("NCurrentSessions", "t", property_get_hashmap_size, offsetof(Manager, sessions), 0),
3384         SD_BUS_PROPERTY("UserTasksMax", "t", property_get_compat_user_tasks_max, 0, SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
3385
3386         SD_BUS_METHOD_WITH_NAMES("GetSession",
3387                                  "s",
3388                                  SD_BUS_PARAM(session_id),
3389                                  "o",
3390                                  SD_BUS_PARAM(object_path),
3391                                  method_get_session,
3392                                  SD_BUS_VTABLE_UNPRIVILEGED),
3393         SD_BUS_METHOD_WITH_NAMES("GetSessionByPID",
3394                                  "u",
3395                                  SD_BUS_PARAM(pid),
3396                                  "o",
3397                                  SD_BUS_PARAM(object_path),
3398                                  method_get_session_by_pid,
3399                                  SD_BUS_VTABLE_UNPRIVILEGED),
3400         SD_BUS_METHOD_WITH_NAMES("GetUser",
3401                                  "u",
3402                                  SD_BUS_PARAM(uid),
3403                                  "o",
3404                                  SD_BUS_PARAM(object_path),
3405                                  method_get_user,
3406                                  SD_BUS_VTABLE_UNPRIVILEGED),
3407         SD_BUS_METHOD_WITH_NAMES("GetUserByPID",
3408                                  "u",
3409                                  SD_BUS_PARAM(pid),
3410                                  "o",
3411                                  SD_BUS_PARAM(object_path),
3412                                  method_get_user_by_pid,
3413                                  SD_BUS_VTABLE_UNPRIVILEGED),
3414         SD_BUS_METHOD_WITH_NAMES("GetSeat",
3415                                  "s",
3416                                  SD_BUS_PARAM(seat_id),
3417                                  "o",
3418                                  SD_BUS_PARAM(object_path),
3419                                  method_get_seat,
3420                                  SD_BUS_VTABLE_UNPRIVILEGED),
3421         SD_BUS_METHOD_WITH_NAMES("ListSessions",
3422                                  NULL,,
3423                                  "a(susso)",
3424                                  SD_BUS_PARAM(sessions),
3425                                  method_list_sessions,
3426                                  SD_BUS_VTABLE_UNPRIVILEGED),
3427         SD_BUS_METHOD_WITH_NAMES("ListUsers",
3428                                  NULL,,
3429                                  "a(uso)",
3430                                  SD_BUS_PARAM(users),
3431                                  method_list_users,
3432                                  SD_BUS_VTABLE_UNPRIVILEGED),
3433         SD_BUS_METHOD_WITH_NAMES("ListSeats",
3434                                  NULL,,
3435                                  "a(so)",
3436                                  SD_BUS_PARAM(seats),
3437                                  method_list_seats,
3438                                  SD_BUS_VTABLE_UNPRIVILEGED),
3439         SD_BUS_METHOD_WITH_NAMES("ListInhibitors",
3440                                  NULL,,
3441                                  "a(ssssuu)",
3442                                  SD_BUS_PARAM(inhibitors),
3443                                  method_list_inhibitors,
3444                                  SD_BUS_VTABLE_UNPRIVILEGED),
3445         SD_BUS_METHOD_WITH_NAMES("CreateSession",
3446                                  "uusssssussbssa(sv)",
3447                                  SD_BUS_PARAM(uid)
3448                                  SD_BUS_PARAM(pid)
3449                                  SD_BUS_PARAM(service)
3450                                  SD_BUS_PARAM(type)
3451                                  SD_BUS_PARAM(class)
3452                                  SD_BUS_PARAM(desktop)
3453                                  SD_BUS_PARAM(seat_id)
3454                                  SD_BUS_PARAM(vtnr)
3455                                  SD_BUS_PARAM(tty)
3456                                  SD_BUS_PARAM(display)
3457                                  SD_BUS_PARAM(remote)
3458                                  SD_BUS_PARAM(remote_user)
3459                                  SD_BUS_PARAM(remote_host)
3460                                  SD_BUS_PARAM(properties),
3461                                  "soshusub",
3462                                  SD_BUS_PARAM(session_id)
3463                                  SD_BUS_PARAM(object_path)
3464                                  SD_BUS_PARAM(runtime_path)
3465                                  SD_BUS_PARAM(fifo_fd)
3466                                  SD_BUS_PARAM(uid)
3467                                  SD_BUS_PARAM(seat_id)
3468                                  SD_BUS_PARAM(vtnr)
3469                                  SD_BUS_PARAM(existing),
3470                                  method_create_session,
3471                                  0),
3472         SD_BUS_METHOD_WITH_NAMES("ReleaseSession",
3473                                  "s",
3474                                  SD_BUS_PARAM(session_id),
3475                                  NULL,,
3476                                  method_release_session,
3477                                  0),
3478         SD_BUS_METHOD_WITH_NAMES("ActivateSession",
3479                                  "s",
3480                                  SD_BUS_PARAM(session_id),
3481                                  NULL,,
3482                                  method_activate_session,
3483                                  SD_BUS_VTABLE_UNPRIVILEGED),
3484         SD_BUS_METHOD_WITH_NAMES("ActivateSessionOnSeat",
3485                                  "ss",
3486                                  SD_BUS_PARAM(session_id)
3487                                  SD_BUS_PARAM(seat_id),
3488                                  NULL,,
3489                                  method_activate_session_on_seat,
3490                                  SD_BUS_VTABLE_UNPRIVILEGED),
3491         SD_BUS_METHOD_WITH_NAMES("LockSession",
3492                                  "s",
3493                                  SD_BUS_PARAM(session_id),
3494                                  NULL,,
3495                                  method_lock_session,
3496                                  SD_BUS_VTABLE_UNPRIVILEGED),
3497         SD_BUS_METHOD_WITH_NAMES("UnlockSession",
3498                                  "s",
3499                                  SD_BUS_PARAM(session_id),
3500                                  NULL,,
3501                                  method_lock_session,
3502                                  SD_BUS_VTABLE_UNPRIVILEGED),
3503         SD_BUS_METHOD("LockSessions",
3504                       NULL,
3505                       NULL,
3506                       method_lock_sessions,
3507                       SD_BUS_VTABLE_UNPRIVILEGED),
3508         SD_BUS_METHOD("UnlockSessions",
3509                       NULL,
3510                       NULL,
3511                       method_lock_sessions,
3512                       SD_BUS_VTABLE_UNPRIVILEGED),
3513         SD_BUS_METHOD_WITH_NAMES("KillSession",
3514                                  "ssi",
3515                                  SD_BUS_PARAM(session_id)
3516                                  SD_BUS_PARAM(who)
3517                                  SD_BUS_PARAM(signal_number),
3518                                  NULL,,
3519                                  method_kill_session,
3520                                  SD_BUS_VTABLE_UNPRIVILEGED),
3521         SD_BUS_METHOD_WITH_NAMES("KillUser",
3522                                  "ui",
3523                                  SD_BUS_PARAM(uid)
3524                                  SD_BUS_PARAM(signal_number),
3525                                  NULL,,
3526                                  method_kill_user,
3527                                  SD_BUS_VTABLE_UNPRIVILEGED),
3528         SD_BUS_METHOD_WITH_NAMES("TerminateSession",
3529                                  "s",
3530                                  SD_BUS_PARAM(session_id),
3531                                  NULL,,
3532                                  method_terminate_session,
3533                                  SD_BUS_VTABLE_UNPRIVILEGED),
3534         SD_BUS_METHOD_WITH_NAMES("TerminateUser",
3535                                  "u",
3536                                  SD_BUS_PARAM(uid),
3537                                  NULL,,
3538                                  method_terminate_user,
3539                                  SD_BUS_VTABLE_UNPRIVILEGED),
3540         SD_BUS_METHOD_WITH_NAMES("TerminateSeat",
3541                                  "s",
3542                                  SD_BUS_PARAM(seat_id),
3543                                  NULL,,
3544                                  method_terminate_seat,
3545                                  SD_BUS_VTABLE_UNPRIVILEGED),
3546         SD_BUS_METHOD_WITH_NAMES("SetUserLinger",
3547                                  "ubb",
3548                                  SD_BUS_PARAM(uid)
3549                                  SD_BUS_PARAM(enable)
3550                                  SD_BUS_PARAM(interactive),
3551                                  NULL,,
3552                                  method_set_user_linger,
3553                                  SD_BUS_VTABLE_UNPRIVILEGED),
3554         SD_BUS_METHOD_WITH_NAMES("AttachDevice",
3555                                  "ssb",
3556                                  SD_BUS_PARAM(seat_id)
3557                                  SD_BUS_PARAM(sysfs_path)
3558                                  SD_BUS_PARAM(interactive),
3559                                  NULL,,
3560                                  method_attach_device,
3561                                  SD_BUS_VTABLE_UNPRIVILEGED),
3562         SD_BUS_METHOD_WITH_NAMES("FlushDevices",
3563                                  "b",
3564                                  SD_BUS_PARAM(interactive),
3565                                  NULL,,
3566                                  method_flush_devices,
3567                                  SD_BUS_VTABLE_UNPRIVILEGED),
3568         SD_BUS_METHOD_WITH_NAMES("PowerOff",
3569                                  "b",
3570                                  SD_BUS_PARAM(interactive),
3571                                  NULL,,
3572                                  method_poweroff,
3573                                  SD_BUS_VTABLE_UNPRIVILEGED),
3574         SD_BUS_METHOD_WITH_NAMES("PowerOffWithFlags",
3575                                  "t",
3576                                  SD_BUS_PARAM(flags),
3577                                  NULL,,
3578                                  method_poweroff,
3579                                  SD_BUS_VTABLE_UNPRIVILEGED),
3580         SD_BUS_METHOD_WITH_NAMES("Reboot",
3581                                  "b",
3582                                  SD_BUS_PARAM(interactive),
3583                                  NULL,,
3584                                  method_reboot,
3585                                  SD_BUS_VTABLE_UNPRIVILEGED),
3586         SD_BUS_METHOD_WITH_NAMES("RebootWithFlags",
3587                                  "t",
3588                                  SD_BUS_PARAM(flags),
3589                                  NULL,,
3590                                  method_reboot,
3591                                  SD_BUS_VTABLE_UNPRIVILEGED),
3592         SD_BUS_METHOD_WITH_NAMES("Halt",
3593                                  "b",
3594                                  SD_BUS_PARAM(interactive),
3595                                  NULL,,
3596                                  method_halt,
3597                                  SD_BUS_VTABLE_UNPRIVILEGED),
3598         SD_BUS_METHOD_WITH_NAMES("HaltWithFlags",
3599                                  "t",
3600                                  SD_BUS_PARAM(flags),
3601                                  NULL,,
3602                                  method_halt,
3603                                  SD_BUS_VTABLE_UNPRIVILEGED),
3604         SD_BUS_METHOD_WITH_NAMES("Suspend",
3605                                  "b",
3606                                  SD_BUS_PARAM(interactive),
3607                                  NULL,,
3608                                  method_suspend,
3609                                  SD_BUS_VTABLE_UNPRIVILEGED),
3610         SD_BUS_METHOD_WITH_NAMES("SuspendWithFlags",
3611                                  "t",
3612                                  SD_BUS_PARAM(flags),
3613                                  NULL,,
3614                                  method_suspend,
3615                                  SD_BUS_VTABLE_UNPRIVILEGED),
3616         SD_BUS_METHOD_WITH_NAMES("Hibernate",
3617                                  "b",
3618                                  SD_BUS_PARAM(interactive),
3619                                  NULL,,
3620                                  method_hibernate,
3621                                  SD_BUS_VTABLE_UNPRIVILEGED),
3622         SD_BUS_METHOD_WITH_NAMES("HibernateWithFlags",
3623                                  "t",
3624                                  SD_BUS_PARAM(flags),
3625                                  NULL,,
3626                                  method_hibernate,
3627                                  SD_BUS_VTABLE_UNPRIVILEGED),
3628         SD_BUS_METHOD_WITH_NAMES("HybridSleep",
3629                                  "b",
3630                                  SD_BUS_PARAM(interactive),
3631                                  NULL,,
3632                                  method_hybrid_sleep,
3633                                  SD_BUS_VTABLE_UNPRIVILEGED),
3634         SD_BUS_METHOD_WITH_NAMES("HybridSleepWithFlags",
3635                                  "t",
3636                                  SD_BUS_PARAM(flags),
3637                                  NULL,,
3638                                  method_hybrid_sleep,
3639                                  SD_BUS_VTABLE_UNPRIVILEGED),
3640         SD_BUS_METHOD_WITH_NAMES("SuspendThenHibernate",
3641                                  "b",
3642                                  SD_BUS_PARAM(interactive),
3643                                  NULL,,
3644                                  method_suspend_then_hibernate,
3645                                  SD_BUS_VTABLE_UNPRIVILEGED),
3646         SD_BUS_METHOD_WITH_NAMES("SuspendThenHibernateWithFlags",
3647                                  "t",
3648                                  SD_BUS_PARAM(flags),
3649                                  NULL,,
3650                                  method_suspend_then_hibernate,
3651                                  SD_BUS_VTABLE_UNPRIVILEGED),
3652         SD_BUS_METHOD_WITH_NAMES("CanPowerOff",
3653                                  NULL,,
3654                                  "s",
3655                                  SD_BUS_PARAM(result),
3656                                  method_can_poweroff,
3657                                  SD_BUS_VTABLE_UNPRIVILEGED),
3658         SD_BUS_METHOD_WITH_NAMES("CanReboot",
3659                                  NULL,,
3660                                  "s",
3661                                  SD_BUS_PARAM(result),
3662                                  method_can_reboot,
3663                                  SD_BUS_VTABLE_UNPRIVILEGED),
3664         SD_BUS_METHOD_WITH_NAMES("CanHalt",
3665                                  NULL,,
3666                                  "s",
3667                                  SD_BUS_PARAM(result),
3668                                  method_can_halt,
3669                                  SD_BUS_VTABLE_UNPRIVILEGED),
3670         SD_BUS_METHOD_WITH_NAMES("CanSuspend",
3671                                  NULL,,
3672                                  "s",
3673                                  SD_BUS_PARAM(result),
3674                                  method_can_suspend,
3675                                  SD_BUS_VTABLE_UNPRIVILEGED),
3676         SD_BUS_METHOD_WITH_NAMES("CanHibernate",
3677                                  NULL,,
3678                                  "s",
3679                                  SD_BUS_PARAM(result),
3680                                  method_can_hibernate,
3681                                  SD_BUS_VTABLE_UNPRIVILEGED),
3682         SD_BUS_METHOD_WITH_NAMES("CanHybridSleep",
3683                                  NULL,,
3684                                  "s",
3685                                  SD_BUS_PARAM(result),
3686                                  method_can_hybrid_sleep,
3687                                  SD_BUS_VTABLE_UNPRIVILEGED),
3688         SD_BUS_METHOD_WITH_NAMES("CanSuspendThenHibernate",
3689                                  NULL,,
3690                                  "s",
3691                                  SD_BUS_PARAM(result),
3692                                  method_can_suspend_then_hibernate,
3693                                  SD_BUS_VTABLE_UNPRIVILEGED),
3694         SD_BUS_METHOD_WITH_NAMES("ScheduleShutdown",
3695                                  "st",
3696                                  SD_BUS_PARAM(type)
3697                                  SD_BUS_PARAM(usec),
3698                                  NULL,,
3699                                  method_schedule_shutdown,
3700                                  SD_BUS_VTABLE_UNPRIVILEGED),
3701         SD_BUS_METHOD_WITH_NAMES("CancelScheduledShutdown",
3702                                  NULL,,
3703                                  "b",
3704                                  SD_BUS_PARAM(cancelled),
3705                                  method_cancel_scheduled_shutdown,
3706                                  SD_BUS_VTABLE_UNPRIVILEGED),
3707         SD_BUS_METHOD_WITH_NAMES("Inhibit",
3708                                  "ssss",
3709                                  SD_BUS_PARAM(what)
3710                                  SD_BUS_PARAM(who)
3711                                  SD_BUS_PARAM(why)
3712                                  SD_BUS_PARAM(mode),
3713                                  "h",
3714                                  SD_BUS_PARAM(pipe_fd),
3715                                  method_inhibit,
3716                                  SD_BUS_VTABLE_UNPRIVILEGED),
3717         SD_BUS_METHOD_WITH_NAMES("CanRebootParameter",
3718                                  NULL,,
3719                                  "s",
3720                                  SD_BUS_PARAM(result),
3721                                  method_can_reboot_parameter,
3722                                  SD_BUS_VTABLE_UNPRIVILEGED),
3723         SD_BUS_METHOD_WITH_NAMES("SetRebootParameter",
3724                                  "s",
3725                                  SD_BUS_PARAM(parameter),
3726                                  NULL,,
3727                                  method_set_reboot_parameter,
3728                                  SD_BUS_VTABLE_UNPRIVILEGED),
3729         SD_BUS_METHOD_WITH_NAMES("CanRebootToFirmwareSetup",
3730                                  NULL,,
3731                                  "s",
3732                                  SD_BUS_PARAM(result),
3733                                  method_can_reboot_to_firmware_setup,
3734                                  SD_BUS_VTABLE_UNPRIVILEGED),
3735         SD_BUS_METHOD_WITH_NAMES("SetRebootToFirmwareSetup",
3736                                  "b",
3737                                  SD_BUS_PARAM(enable),
3738                                  NULL,,
3739                                  method_set_reboot_to_firmware_setup,
3740                                  SD_BUS_VTABLE_UNPRIVILEGED),
3741         SD_BUS_METHOD_WITH_NAMES("CanRebootToBootLoaderMenu",
3742                                  NULL,,
3743                                  "s",
3744                                  SD_BUS_PARAM(result),
3745                                  method_can_reboot_to_boot_loader_menu,
3746                                  SD_BUS_VTABLE_UNPRIVILEGED),
3747         SD_BUS_METHOD_WITH_NAMES("SetRebootToBootLoaderMenu",
3748                                  "t",
3749                                  SD_BUS_PARAM(timeout),
3750                                  NULL,,
3751                                  method_set_reboot_to_boot_loader_menu,
3752                                  SD_BUS_VTABLE_UNPRIVILEGED),
3753         SD_BUS_METHOD_WITH_NAMES("CanRebootToBootLoaderEntry",
3754                                  NULL,,
3755                                  "s",
3756                                  SD_BUS_PARAM(result),
3757                                  method_can_reboot_to_boot_loader_entry,
3758                                  SD_BUS_VTABLE_UNPRIVILEGED),
3759         SD_BUS_METHOD_WITH_NAMES("SetRebootToBootLoaderEntry",
3760                                  "s",
3761                                  SD_BUS_PARAM(boot_loader_entry),
3762                                  NULL,,
3763                                  method_set_reboot_to_boot_loader_entry,
3764                                  SD_BUS_VTABLE_UNPRIVILEGED),
3765         SD_BUS_METHOD_WITH_NAMES("SetWallMessage",
3766                                  "sb",
3767                                  SD_BUS_PARAM(wall_message)
3768                                  SD_BUS_PARAM(enable),
3769                                  NULL,,
3770                                  method_set_wall_message,
3771                                  SD_BUS_VTABLE_UNPRIVILEGED),
3772
3773         SD_BUS_SIGNAL_WITH_NAMES("SessionNew",
3774                                  "so",
3775                                  SD_BUS_PARAM(session_id)
3776                                  SD_BUS_PARAM(object_path),
3777                                  0),
3778         SD_BUS_SIGNAL_WITH_NAMES("SessionRemoved",
3779                                  "so",
3780                                  SD_BUS_PARAM(session_id)
3781                                  SD_BUS_PARAM(object_path),
3782                                  0),
3783         SD_BUS_SIGNAL_WITH_NAMES("UserNew",
3784                                  "uo",
3785                                  SD_BUS_PARAM(uid)
3786                                  SD_BUS_PARAM(object_path),
3787                                  0),
3788         SD_BUS_SIGNAL_WITH_NAMES("UserRemoved",
3789                                  "uo",
3790                                  SD_BUS_PARAM(uid)
3791                                  SD_BUS_PARAM(object_path),
3792                                  0),
3793         SD_BUS_SIGNAL_WITH_NAMES("SeatNew",
3794                                  "so",
3795                                  SD_BUS_PARAM(seat_id)
3796                                  SD_BUS_PARAM(object_path),
3797                                  0),
3798         SD_BUS_SIGNAL_WITH_NAMES("SeatRemoved",
3799                                  "so",
3800                                  SD_BUS_PARAM(seat_id)
3801                                  SD_BUS_PARAM(object_path),
3802                                  0),
3803         SD_BUS_SIGNAL_WITH_NAMES("PrepareForShutdown",
3804                                  "b",
3805                                  SD_BUS_PARAM(start),
3806                                  0),
3807         SD_BUS_SIGNAL_WITH_NAMES("PrepareForSleep",
3808                                  "b",
3809                                  SD_BUS_PARAM(start),
3810                                  0),
3811
3812         SD_BUS_VTABLE_END
3813 };
3814
3815 const BusObjectImplementation manager_object = {
3816         "/org/freedesktop/login1",
3817         "org.freedesktop.login1.Manager",
3818         .vtables = BUS_VTABLES(manager_vtable),
3819         .children = BUS_IMPLEMENTATIONS(&seat_object,
3820                                         &session_object,
3821                                         &user_object),
3822 };
3823
3824 static int session_jobs_reply(Session *s, uint32_t jid, const char *unit, const char *result) {
3825         assert(s);
3826         assert(unit);
3827
3828         if (!s->started)
3829                 return 0;
3830
3831         if (result && !streq(result, "done")) {
3832                 _cleanup_(sd_bus_error_free) sd_bus_error e = SD_BUS_ERROR_NULL;
3833
3834                 sd_bus_error_setf(&e, BUS_ERROR_JOB_FAILED,
3835                                   "Job %u for unit '%s' failed with '%s'", jid, unit, result);
3836                 return session_send_create_reply(s, &e);
3837         }
3838
3839         return session_send_create_reply(s, NULL);
3840 }
3841
3842 int match_job_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3843         const char *path, *result, *unit;
3844         Manager *m = userdata;
3845         Session *session;
3846         uint32_t id;
3847         User *user;
3848         int r;
3849
3850         assert(message);
3851         assert(m);
3852
3853         r = sd_bus_message_read(message, "uoss", &id, &path, &unit, &result);
3854         if (r < 0) {
3855                 bus_log_parse_error(r);
3856                 return 0;
3857         }
3858
3859         if (m->action_job && streq(m->action_job, path)) {
3860                 log_info("Operation '%s' finished.", inhibit_what_to_string(m->action_what));
3861
3862                 /* Tell people that they now may take a lock again */
3863                 (void) send_prepare_for(m, m->action_what, false);
3864
3865                 m->action_job = mfree(m->action_job);
3866                 m->action_unit = NULL;
3867                 m->action_what = 0;
3868                 return 0;
3869         }
3870
3871         session = hashmap_get(m->session_units, unit);
3872         if (session) {
3873                 if (streq_ptr(path, session->scope_job)) {
3874                         session->scope_job = mfree(session->scope_job);
3875                         (void) session_jobs_reply(session, id, unit, result);
3876
3877                         session_save(session);
3878                         user_save(session->user);
3879                 }
3880
3881                 session_add_to_gc_queue(session);
3882         }
3883
3884         user = hashmap_get(m->user_units, unit);
3885         if (user) {
3886                 if (streq_ptr(path, user->service_job)) {
3887                         user->service_job = mfree(user->service_job);
3888
3889                         LIST_FOREACH(sessions_by_user, session, user->sessions)
3890                                 (void) session_jobs_reply(session, id, unit, NULL /* don't propagate user service failures to the client */);
3891
3892                         user_save(user);
3893                 }
3894
3895                 user_add_to_gc_queue(user);
3896         }
3897
3898         return 0;
3899 }
3900
3901 int match_unit_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3902         const char *path, *unit;
3903         Manager *m = userdata;
3904         Session *session;
3905         User *user;
3906         int r;
3907
3908         assert(message);
3909         assert(m);
3910
3911         r = sd_bus_message_read(message, "so", &unit, &path);
3912         if (r < 0) {
3913                 bus_log_parse_error(r);
3914                 return 0;
3915         }
3916
3917         session = hashmap_get(m->session_units, unit);
3918         if (session)
3919                 session_add_to_gc_queue(session);
3920
3921         user = hashmap_get(m->user_units, unit);
3922         if (user)
3923                 user_add_to_gc_queue(user);
3924
3925         return 0;
3926 }
3927
3928 int match_properties_changed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3929         _cleanup_free_ char *unit = NULL;
3930         Manager *m = userdata;
3931         const char *path;
3932         Session *session;
3933         User *user;
3934         int r;
3935
3936         assert(message);
3937         assert(m);
3938
3939         path = sd_bus_message_get_path(message);
3940         if (!path)
3941                 return 0;
3942
3943         r = unit_name_from_dbus_path(path, &unit);
3944         if (r == -EINVAL) /* not a unit */
3945                 return 0;
3946         if (r < 0) {
3947                 log_oom();
3948                 return 0;
3949         }
3950
3951         session = hashmap_get(m->session_units, unit);
3952         if (session)
3953                 session_add_to_gc_queue(session);
3954
3955         user = hashmap_get(m->user_units, unit);
3956         if (user)
3957                 user_add_to_gc_queue(user);
3958
3959         return 0;
3960 }
3961
3962 int match_reloading(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3963         Manager *m = userdata;
3964         Session *session;
3965         int b, r;
3966
3967         assert(message);
3968         assert(m);
3969
3970         r = sd_bus_message_read(message, "b", &b);
3971         if (r < 0) {
3972                 bus_log_parse_error(r);
3973                 return 0;
3974         }
3975
3976         if (b)
3977                 return 0;
3978
3979         /* systemd finished reloading, let's recheck all our sessions */
3980         log_debug("System manager has been reloaded, rechecking sessions...");
3981
3982         HASHMAP_FOREACH(session, m->sessions)
3983                 session_add_to_gc_queue(session);
3984
3985         return 0;
3986 }
3987
3988 int manager_send_changed(Manager *manager, const char *property, ...) {
3989         char **l;
3990
3991         assert(manager);
3992
3993         l = strv_from_stdarg_alloca(property);
3994
3995         return sd_bus_emit_properties_changed_strv(
3996                         manager->bus,
3997                         "/org/freedesktop/login1",
3998                         "org.freedesktop.login1.Manager",
3999                         l);
4000 }
4001
4002 static int strdup_job(sd_bus_message *reply, char **job) {
4003         const char *j;
4004         char *copy;
4005         int r;
4006
4007         r = sd_bus_message_read(reply, "o", &j);
4008         if (r < 0)
4009                 return r;
4010
4011         copy = strdup(j);
4012         if (!copy)
4013                 return -ENOMEM;
4014
4015         *job = copy;
4016         return 1;
4017 }
4018
4019 int manager_start_scope(
4020                 Manager *manager,
4021                 const char *scope,
4022                 pid_t pid,
4023                 const char *slice,
4024                 const char *description,
4025                 char **wants,
4026                 char **after,
4027                 const char *requires_mounts_for,
4028                 sd_bus_message *more_properties,
4029                 sd_bus_error *error,
4030                 char **job) {
4031
4032         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
4033         char **i;
4034         int r;
4035
4036         assert(manager);
4037         assert(scope);
4038         assert(pid > 1);
4039         assert(job);
4040
4041         r = bus_message_new_method_call(manager->bus, &m, bus_systemd_mgr, "StartTransientUnit");
4042         if (r < 0)
4043                 return r;
4044
4045         r = sd_bus_message_append(m, "ss", strempty(scope), "fail");
4046         if (r < 0)
4047                 return r;
4048
4049         r = sd_bus_message_open_container(m, 'a', "(sv)");
4050         if (r < 0)
4051                 return r;
4052
4053         if (!isempty(slice)) {
4054                 r = sd_bus_message_append(m, "(sv)", "Slice", "s", slice);
4055                 if (r < 0)
4056                         return r;
4057         }
4058
4059         if (!isempty(description)) {
4060                 r = sd_bus_message_append(m, "(sv)", "Description", "s", description);
4061                 if (r < 0)
4062                         return r;
4063         }
4064
4065         STRV_FOREACH(i, wants) {
4066                 r = sd_bus_message_append(m, "(sv)", "Wants", "as", 1, *i);
4067                 if (r < 0)
4068                         return r;
4069         }
4070
4071         STRV_FOREACH(i, after) {
4072                 r = sd_bus_message_append(m, "(sv)", "After", "as", 1, *i);
4073                 if (r < 0)
4074                         return r;
4075         }
4076
4077         if (!empty_or_root(requires_mounts_for)) {
4078                 r = sd_bus_message_append(m, "(sv)", "RequiresMountsFor", "as", 1, requires_mounts_for);
4079                 if (r < 0)
4080                         return r;
4081         }
4082
4083         /* Make sure that the session shells are terminated with SIGHUP since bash and friends tend to ignore
4084          * SIGTERM */
4085         r = sd_bus_message_append(m, "(sv)", "SendSIGHUP", "b", true);
4086         if (r < 0)
4087                 return r;
4088
4089         r = sd_bus_message_append(m, "(sv)", "PIDs", "au", 1, pid);
4090         if (r < 0)
4091                 return r;
4092
4093         /* disable TasksMax= for the session scope, rely on the slice setting for it */
4094         r = sd_bus_message_append(m, "(sv)", "TasksMax", "t", (uint64_t)-1);
4095         if (r < 0)
4096                 return bus_log_create_error(r);
4097
4098         if (more_properties) {
4099                 /* If TasksMax also appears here, it will overwrite the default value set above */
4100                 r = sd_bus_message_copy(m, more_properties, true);
4101                 if (r < 0)
4102                         return r;
4103         }
4104
4105         r = sd_bus_message_close_container(m);
4106         if (r < 0)
4107                 return r;
4108
4109         r = sd_bus_message_append(m, "a(sa(sv))", 0);
4110         if (r < 0)
4111                 return r;
4112
4113         r = sd_bus_call(manager->bus, m, 0, error, &reply);
4114         if (r < 0)
4115                 return r;
4116
4117         return strdup_job(reply, job);
4118 }
4119
4120 int manager_start_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) {
4121         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4122         int r;
4123
4124         assert(manager);
4125         assert(unit);
4126         assert(job);
4127
4128         r = bus_call_method(
4129                         manager->bus,
4130                         bus_systemd_mgr,
4131                         "StartUnit",
4132                         error,
4133                         &reply,
4134                         "ss", unit, "replace");
4135         if (r < 0)
4136                 return r;
4137
4138         return strdup_job(reply, job);
4139 }
4140
4141 int manager_stop_unit(Manager *manager, const char *unit, const char *job_mode, sd_bus_error *error, char **ret_job) {
4142         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4143         int r;
4144
4145         assert(manager);
4146         assert(unit);
4147         assert(ret_job);
4148
4149         r = bus_call_method(
4150                         manager->bus,
4151                         bus_systemd_mgr,
4152                         "StopUnit",
4153                         error,
4154                         &reply,
4155                         "ss", unit, job_mode ?: "fail");
4156         if (r < 0) {
4157                 if (sd_bus_error_has_names(error, BUS_ERROR_NO_SUCH_UNIT,
4158                                                   BUS_ERROR_LOAD_FAILED)) {
4159
4160                         *ret_job = NULL;
4161                         sd_bus_error_free(error);
4162                         return 0;
4163                 }
4164
4165                 return r;
4166         }
4167
4168         return strdup_job(reply, ret_job);
4169 }
4170
4171 int manager_abandon_scope(Manager *manager, const char *scope, sd_bus_error *ret_error) {
4172         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4173         _cleanup_free_ char *path = NULL;
4174         int r;
4175
4176         assert(manager);
4177         assert(scope);
4178
4179         path = unit_dbus_path_from_name(scope);
4180         if (!path)
4181                 return -ENOMEM;
4182
4183         r = sd_bus_call_method(
4184                         manager->bus,
4185                         "org.freedesktop.systemd1",
4186                         path,
4187                         "org.freedesktop.systemd1.Scope",
4188                         "Abandon",
4189                         &error,
4190                         NULL,
4191                         NULL);
4192         if (r < 0) {
4193                 if (sd_bus_error_has_names(&error, BUS_ERROR_NO_SUCH_UNIT,
4194                                                    BUS_ERROR_LOAD_FAILED,
4195                                                    BUS_ERROR_SCOPE_NOT_RUNNING))
4196                         return 0;
4197
4198                 sd_bus_error_move(ret_error, &error);
4199                 return r;
4200         }
4201
4202         return 1;
4203 }
4204
4205 int manager_kill_unit(Manager *manager, const char *unit, KillWho who, int signo, sd_bus_error *error) {
4206         assert(manager);
4207         assert(unit);
4208
4209         return bus_call_method(
4210                         manager->bus,
4211                         bus_systemd_mgr,
4212                         "KillUnit",
4213                         error,
4214                         NULL,
4215                         "ssi", unit, who == KILL_LEADER ? "main" : "all", signo);
4216 }
4217
4218 int manager_unit_is_active(Manager *manager, const char *unit, sd_bus_error *ret_error) {
4219         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4220         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4221         _cleanup_free_ char *path = NULL;
4222         const char *state;
4223         int r;
4224
4225         assert(manager);
4226         assert(unit);
4227
4228         path = unit_dbus_path_from_name(unit);
4229         if (!path)
4230                 return -ENOMEM;
4231
4232         r = sd_bus_get_property(
4233                         manager->bus,
4234                         "org.freedesktop.systemd1",
4235                         path,
4236                         "org.freedesktop.systemd1.Unit",
4237                         "ActiveState",
4238                         &error,
4239                         &reply,
4240                         "s");
4241         if (r < 0) {
4242                 /* systemd might have dropped off momentarily, let's
4243                  * not make this an error */
4244                 if (sd_bus_error_has_names(&error, SD_BUS_ERROR_NO_REPLY,
4245                                                    SD_BUS_ERROR_DISCONNECTED))
4246                         return true;
4247
4248                 /* If the unit is already unloaded then it's not
4249                  * active */
4250                 if (sd_bus_error_has_names(&error, BUS_ERROR_NO_SUCH_UNIT,
4251                                                    BUS_ERROR_LOAD_FAILED))
4252                         return false;
4253
4254                 sd_bus_error_move(ret_error, &error);
4255                 return r;
4256         }
4257
4258         r = sd_bus_message_read(reply, "s", &state);
4259         if (r < 0)
4260                 return r;
4261
4262         return !STR_IN_SET(state, "inactive", "failed");
4263 }
4264
4265 int manager_job_is_active(Manager *manager, const char *path, sd_bus_error *ret_error) {
4266         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4267         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4268         int r;
4269
4270         assert(manager);
4271         assert(path);
4272
4273         r = sd_bus_get_property(
4274                         manager->bus,
4275                         "org.freedesktop.systemd1",
4276                         path,
4277                         "org.freedesktop.systemd1.Job",
4278                         "State",
4279                         &error,
4280                         &reply,
4281                         "s");
4282         if (r < 0) {
4283                 if (sd_bus_error_has_names(&error, SD_BUS_ERROR_NO_REPLY,
4284                                                    SD_BUS_ERROR_DISCONNECTED))
4285                         return true;
4286
4287                 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_OBJECT))
4288                         return false;
4289
4290                 sd_bus_error_move(ret_error, &error);
4291                 return r;
4292         }
4293
4294         /* We don't actually care about the state really. The fact
4295          * that we could read the job state is enough for us */
4296
4297         return true;
4298 }