src/login/logind-dbus.c

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2
   3 #include <errno.h>
   4 #include <sys/stat.h>
   5 #include <unistd.h>
   6
   7 #include "sd-device.h"
   8 #include "sd-messages.h"
   9
  10 #include "alloc-util.h"
  11 #include "audit-util.h"
  12 #include "bootspec.h"
  13 #include "bus-common-errors.h"
  14 #include "bus-error.h"
  15 #include "bus-get-properties.h"
  16 #include "bus-locator.h"
  17 #include "bus-polkit.h"
  18 #include "bus-unit-util.h"
  19 #include "bus-util.h"
  20 #include "cgroup-util.h"
  21 #include "device-util.h"
  22 #include "dirent-util.h"
  23 #include "efi-api.h"
  24 #include "efi-loader.h"
  25 #include "efivars.h"
  26 #include "env-file.h"
  27 #include "env-util.h"
  28 #include "escape.h"
  29 #include "event-util.h"
  30 #include "fd-util.h"
  31 #include "fileio-label.h"
  32 #include "fileio.h"
  33 #include "format-util.h"
  34 #include "fs-util.h"
  35 #include "logind-action.h"
  36 #include "logind-dbus.h"
  37 #include "logind-polkit.h"
  38 #include "logind-seat-dbus.h"
  39 #include "logind-session-dbus.h"
  40 #include "logind-user-dbus.h"
  41 #include "logind.h"
  42 #include "missing_capability.h"
  43 #include "mkdir-label.h"
  44 #include "parse-util.h"
  45 #include "path-util.h"
  46 #include "process-util.h"
  47 #include "reboot-util.h"
  48 #include "selinux-util.h"
  49 #include "sleep-config.h"
  50 #include "special.h"
  51 #include "serialize.h"
  52 #include "stdio-util.h"
  53 #include "strv.h"
  54 #include "terminal-util.h"
  55 #include "tmpfile-util.h"
  56 #include "unit-name.h"
  57 #include "user-util.h"
  58 #include "utmp-wtmp.h"
  59 #include "virt.h"
  60 #include "wall.h"
  61
  62 /* As a random fun fact sysvinit had a 252 (256-(strlen(" \r\n")+1))
  63  * character limit for the wall message.
  64  * https://git.savannah.nongnu.org/cgit/sysvinit.git/tree/src/shutdown.c#n72
  65  * There is no real technical need for that but doesn't make sense
  66  * to store arbitrary amounts either. As we are not stingy here, we
  67  * allow 4k.
  68  */
  69 #define WALL_MESSAGE_MAX 4096U
  70
  71 #define SHUTDOWN_SCHEDULE_FILE "/run/systemd/shutdown/scheduled"
  72
  73 static int update_schedule_file(Manager *m);
  74 static void reset_scheduled_shutdown(Manager *m);
  75 static int manager_setup_shutdown_timers(Manager* m);
  76
  77 static int get_sender_session(
  78                 Manager *m,
  79                 sd_bus_message *message,
  80                 bool consult_display,
  81                 sd_bus_error *error,
  82                 Session **ret) {
  83
  84         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
  85         Session *session = NULL;
  86         const char *name;
  87         int r;
  88
  89         /* Acquire the sender's session. This first checks if the sending process is inside a session itself,
  90          * and returns that. If not and 'consult_display' is true, this returns the display session of the
  91          * owning user of the caller. */
  92
  93         r = sd_bus_query_sender_creds(message,
  94                                       SD_BUS_CREDS_SESSION|SD_BUS_CREDS_AUGMENT|
  95                                       (consult_display ? SD_BUS_CREDS_OWNER_UID : 0), &creds);
  96         if (r < 0)
  97                 return r;
  98
  99         r = sd_bus_creds_get_session(creds, &name);
 100         if (r < 0) {
 101                 if (r != -ENXIO)
 102                         return r;
 103
 104                 if (consult_display) {
 105                         uid_t uid;
 106
 107                         r = sd_bus_creds_get_owner_uid(creds, &uid);
 108                         if (r < 0) {
 109                                 if (r != -ENXIO)
 110                                         return r;
 111                         } else {
 112                                 User *user;
 113
 114                                 user = hashmap_get(m->users, UID_TO_PTR(uid));
 115                                 if (user)
 116                                         session = user->display;
 117                         }
 118                 }
 119         } else
 120                 session = hashmap_get(m->sessions, name);
 121
 122         if (!session)
 123                 return sd_bus_error_setf(error, BUS_ERROR_NO_SESSION_FOR_PID,
 124                                          consult_display ?
 125                                          "Caller does not belong to any known session and doesn't own any suitable session." :
 126                                          "Caller does not belong to any known session.");
 127
 128         *ret = session;
 129         return 0;
 130 }
 131
 132 int manager_get_session_from_creds(
 133                 Manager *m,
 134                 sd_bus_message *message,
 135                 const char *name,
 136                 sd_bus_error *error,
 137                 Session **ret) {
 138
 139         Session *session;
 140
 141         assert(m);
 142         assert(ret);
 143
 144         if (SEAT_IS_SELF(name)) /* the caller's own session */
 145                 return get_sender_session(m, message, false, error, ret);
 146         if (SEAT_IS_AUTO(name)) /* The caller's own session if they have one, otherwise their user's display session */
 147                 return get_sender_session(m, message, true, error, ret);
 148
 149         session = hashmap_get(m->sessions, name);
 150         if (!session)
 151                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SESSION, "No session '%s' known", name);
 152
 153         *ret = session;
 154         return 0;
 155 }
 156
 157 static int get_sender_user(Manager *m, sd_bus_message *message, sd_bus_error *error, User **ret) {
 158         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 159         uid_t uid;
 160         User *user;
 161         int r;
 162
 163         /* Note that we get the owner UID of the session, not the actual client UID here! */
 164         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds);
 165         if (r < 0)
 166                 return r;
 167
 168         r = sd_bus_creds_get_owner_uid(creds, &uid);
 169         if (r < 0) {
 170                 if (r != -ENXIO)
 171                         return r;
 172
 173                 user = NULL;
 174         } else
 175                 user = hashmap_get(m->users, UID_TO_PTR(uid));
 176
 177         if (!user)
 178                 return sd_bus_error_setf(error, BUS_ERROR_NO_USER_FOR_PID,
 179                                          "Caller does not belong to any logged in or lingering user");
 180
 181         *ret = user;
 182         return 0;
 183 }
 184
 185 int manager_get_user_from_creds(Manager *m, sd_bus_message *message, uid_t uid, sd_bus_error *error, User **ret) {
 186         User *user;
 187
 188         assert(m);
 189         assert(ret);
 190
 191         if (!uid_is_valid(uid))
 192                 return get_sender_user(m, message, error, ret);
 193
 194         user = hashmap_get(m->users, UID_TO_PTR(uid));
 195         if (!user)
 196                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_USER,
 197                                          "User ID "UID_FMT" is not logged in or lingering", uid);
 198
 199         *ret = user;
 200         return 0;
 201 }
 202
 203 int manager_get_seat_from_creds(
 204                 Manager *m,
 205                 sd_bus_message *message,
 206                 const char *name,
 207                 sd_bus_error *error,
 208                 Seat **ret) {
 209
 210         Seat *seat;
 211         int r;
 212
 213         assert(m);
 214         assert(ret);
 215
 216         if (SEAT_IS_SELF(name) || SEAT_IS_AUTO(name)) {
 217                 Session *session;
 218
 219                 /* Use these special seat names as session names */
 220                 r = manager_get_session_from_creds(m, message, name, error, &session);
 221                 if (r < 0)
 222                         return r;
 223
 224                 seat = session->seat;
 225                 if (!seat)
 226                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "Session '%s' has no seat.", session->id);
 227         } else {
 228                 seat = hashmap_get(m->seats, name);
 229                 if (!seat)
 230                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "No seat '%s' known", name);
 231         }
 232
 233         *ret = seat;
 234         return 0;
 235 }
 236
 237 static int return_test_polkit(
 238                 sd_bus_message *message,
 239                 const char *action,
 240                 const char **details,
 241                 uid_t good_user,
 242                 sd_bus_error *e) {
 243
 244         const char *result;
 245         bool challenge;
 246         int r;
 247
 248         r = bus_test_polkit(message, action, details, good_user, &challenge, e);
 249         if (r < 0)
 250                 return r;
 251
 252         if (r > 0)
 253                 result = "yes";
 254         else if (challenge)
 255                 result = "challenge";
 256         else
 257                 result = "no";
 258
 259         return sd_bus_reply_method_return(message, "s", result);
 260 }
 261
 262 static int property_get_idle_hint(
 263                 sd_bus *bus,
 264                 const char *path,
 265                 const char *interface,
 266                 const char *property,
 267                 sd_bus_message *reply,
 268                 void *userdata,
 269                 sd_bus_error *error) {
 270
 271         Manager *m = ASSERT_PTR(userdata);
 272
 273         assert(bus);
 274         assert(reply);
 275
 276         return sd_bus_message_append(reply, "b", manager_get_idle_hint(m, NULL) > 0);
 277 }
 278
 279 static int property_get_idle_since_hint(
 280                 sd_bus *bus,
 281                 const char *path,
 282                 const char *interface,
 283                 const char *property,
 284                 sd_bus_message *reply,
 285                 void *userdata,
 286                 sd_bus_error *error) {
 287
 288         Manager *m = ASSERT_PTR(userdata);
 289         dual_timestamp t = DUAL_TIMESTAMP_NULL;
 290
 291         assert(bus);
 292         assert(reply);
 293
 294         manager_get_idle_hint(m, &t);
 295
 296         return sd_bus_message_append(reply, "t", streq(property, "IdleSinceHint") ? t.realtime : t.monotonic);
 297 }
 298
 299 static int property_get_inhibited(
 300                 sd_bus *bus,
 301                 const char *path,
 302                 const char *interface,
 303                 const char *property,
 304                 sd_bus_message *reply,
 305                 void *userdata,
 306                 sd_bus_error *error) {
 307
 308         Manager *m = ASSERT_PTR(userdata);
 309         InhibitWhat w;
 310
 311         assert(bus);
 312         assert(reply);
 313
 314         w = manager_inhibit_what(m, streq(property, "BlockInhibited") ? INHIBIT_BLOCK : INHIBIT_DELAY);
 315
 316         return sd_bus_message_append(reply, "s", inhibit_what_to_string(w));
 317 }
 318
 319 static int property_get_preparing(
 320                 sd_bus *bus,
 321                 const char *path,
 322                 const char *interface,
 323                 const char *property,
 324                 sd_bus_message *reply,
 325                 void *userdata,
 326                 sd_bus_error *error) {
 327
 328         Manager *m = ASSERT_PTR(userdata);
 329         bool b = false;
 330
 331         assert(bus);
 332         assert(reply);
 333
 334         if (m->delayed_action) {
 335                 if (streq(property, "PreparingForShutdown"))
 336                         b = m->delayed_action->inhibit_what & INHIBIT_SHUTDOWN;
 337                 else
 338                         b = m->delayed_action->inhibit_what & INHIBIT_SLEEP;
 339         }
 340
 341         return sd_bus_message_append(reply, "b", b);
 342 }
 343
 344 static int property_get_sleep_operations(
 345                 sd_bus *bus,
 346                 const char *path,
 347                 const char *interface,
 348                 const char *property,
 349                 sd_bus_message *reply,
 350                 void *userdata,
 351                 sd_bus_error *error) {
 352
 353         Manager *m = ASSERT_PTR(userdata);
 354         _cleanup_strv_free_ char **actions = NULL;
 355         int r;
 356
 357         assert(bus);
 358         assert(reply);
 359
 360         r = handle_action_get_enabled_sleep_actions(m->handle_action_sleep_mask, &actions);
 361         if (r < 0)
 362                 return r;
 363
 364         return sd_bus_message_append_strv(reply, actions);
 365 }
 366
 367 static int property_get_scheduled_shutdown(
 368                 sd_bus *bus,
 369                 const char *path,
 370                 const char *interface,
 371                 const char *property,
 372                 sd_bus_message *reply,
 373                 void *userdata,
 374                 sd_bus_error *error) {
 375
 376         Manager *m = ASSERT_PTR(userdata);
 377         int r;
 378
 379         assert(bus);
 380         assert(reply);
 381
 382         r = sd_bus_message_open_container(reply, 'r', "st");
 383         if (r < 0)
 384                 return r;
 385
 386         r = sd_bus_message_append(
 387                         reply, "st",
 388                         handle_action_to_string(m->scheduled_shutdown_action),
 389                         m->scheduled_shutdown_timeout);
 390         if (r < 0)
 391                 return r;
 392
 393         return sd_bus_message_close_container(reply);
 394 }
 395
 396 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_handle_action, handle_action, HandleAction);
 397 static BUS_DEFINE_PROPERTY_GET(property_get_docked, "b", Manager, manager_is_docked_or_external_displays);
 398 static BUS_DEFINE_PROPERTY_GET(property_get_lid_closed, "b", Manager, manager_is_lid_closed);
 399 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_on_external_power, "b", manager_is_on_external_power());
 400 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_compat_user_tasks_max, "t", CGROUP_LIMIT_MAX);
 401 static BUS_DEFINE_PROPERTY_GET_REF(property_get_hashmap_size, "t", Hashmap *, (uint64_t) hashmap_size);
 402
 403 static int method_get_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 404         _cleanup_free_ char *p = NULL;
 405         Manager *m = ASSERT_PTR(userdata);
 406         const char *name;
 407         Session *session;
 408         int r;
 409
 410         assert(message);
 411
 412         r = sd_bus_message_read(message, "s", &name);
 413         if (r < 0)
 414                 return r;
 415
 416         r = manager_get_session_from_creds(m, message, name, error, &session);
 417         if (r < 0)
 418                 return r;
 419
 420         p = session_bus_path(session);
 421         if (!p)
 422                 return -ENOMEM;
 423
 424         return sd_bus_reply_method_return(message, "o", p);
 425 }
 426
 427 /* Get login session of a process.  This is not what you are looking for these days,
 428  * as apps may instead belong to a user service unit.  This includes terminal
 429  * emulators and hence command-line apps. */
 430 static int method_get_session_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 431         Manager *m = ASSERT_PTR(userdata);
 432         _cleanup_free_ char *p = NULL;
 433         Session *session = NULL;
 434         pid_t pid;
 435         int r;
 436
 437         assert(message);
 438
 439         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 440
 441         r = sd_bus_message_read(message, "u", &pid);
 442         if (r < 0)
 443                 return r;
 444         if (pid < 0)
 445                 return -EINVAL;
 446
 447         if (pid == 0) {
 448                 r = manager_get_session_from_creds(m, message, NULL, error, &session);
 449                 if (r < 0)
 450                         return r;
 451         } else {
 452                 r = manager_get_session_by_pidref(m, &PIDREF_MAKE_FROM_PID(pid), &session);
 453                 if (r < 0)
 454                         return r;
 455
 456                 if (!session)
 457                         return sd_bus_error_setf(error, BUS_ERROR_NO_SESSION_FOR_PID,
 458                                                  "PID "PID_FMT" does not belong to any known session", pid);
 459         }
 460
 461         p = session_bus_path(session);
 462         if (!p)
 463                 return -ENOMEM;
 464
 465         return sd_bus_reply_method_return(message, "o", p);
 466 }
 467
 468 static int method_get_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 469         _cleanup_free_ char *p = NULL;
 470         Manager *m = ASSERT_PTR(userdata);
 471         uint32_t uid;
 472         User *user;
 473         int r;
 474
 475         assert(message);
 476
 477         r = sd_bus_message_read(message, "u", &uid);
 478         if (r < 0)
 479                 return r;
 480
 481         r = manager_get_user_from_creds(m, message, uid, error, &user);
 482         if (r < 0)
 483                 return r;
 484
 485         p = user_bus_path(user);
 486         if (!p)
 487                 return -ENOMEM;
 488
 489         return sd_bus_reply_method_return(message, "o", p);
 490 }
 491
 492 static int method_get_user_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 493         _cleanup_free_ char *p = NULL;
 494         Manager *m = ASSERT_PTR(userdata);
 495         User *user = NULL;
 496         pid_t pid;
 497         int r;
 498
 499         assert(message);
 500
 501         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 502
 503         r = sd_bus_message_read(message, "u", &pid);
 504         if (r < 0)
 505                 return r;
 506         if (pid < 0)
 507                 return -EINVAL;
 508
 509         if (pid == 0) {
 510                 r = manager_get_user_from_creds(m, message, UID_INVALID, error, &user);
 511                 if (r < 0)
 512                         return r;
 513         } else {
 514                 r = manager_get_user_by_pid(m, pid, &user);
 515                 if (r < 0)
 516                         return r;
 517                 if (!user)
 518                         return sd_bus_error_setf(error, BUS_ERROR_NO_USER_FOR_PID,
 519                                                  "PID "PID_FMT" does not belong to any logged in user or lingering user",
 520                                                  pid);
 521         }
 522
 523         p = user_bus_path(user);
 524         if (!p)
 525                 return -ENOMEM;
 526
 527         return sd_bus_reply_method_return(message, "o", p);
 528 }
 529
 530 static int method_get_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 531         _cleanup_free_ char *p = NULL;
 532         Manager *m = ASSERT_PTR(userdata);
 533         const char *name;
 534         Seat *seat;
 535         int r;
 536
 537         assert(message);
 538
 539         r = sd_bus_message_read(message, "s", &name);
 540         if (r < 0)
 541                 return r;
 542
 543         r = manager_get_seat_from_creds(m, message, name, error, &seat);
 544         if (r < 0)
 545                 return r;
 546
 547         p = seat_bus_path(seat);
 548         if (!p)
 549                 return -ENOMEM;
 550
 551         return sd_bus_reply_method_return(message, "o", p);
 552 }
 553
 554 static int method_list_sessions(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 555         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 556         Manager *m = ASSERT_PTR(userdata);
 557         Session *session;
 558         int r;
 559
 560         assert(message);
 561
 562         r = sd_bus_message_new_method_return(message, &reply);
 563         if (r < 0)
 564                 return r;
 565
 566         r = sd_bus_message_open_container(reply, 'a', "(susso)");
 567         if (r < 0)
 568                 return r;
 569
 570         HASHMAP_FOREACH(session, m->sessions) {
 571                 _cleanup_free_ char *p = NULL;
 572
 573                 p = session_bus_path(session);
 574                 if (!p)
 575                         return -ENOMEM;
 576
 577                 r = sd_bus_message_append(reply, "(susso)",
 578                                           session->id,
 579                                           (uint32_t) session->user->user_record->uid,
 580                                           session->user->user_record->user_name,
 581                                           session->seat ? session->seat->id : "",
 582                                           p);
 583                 if (r < 0)
 584                         return r;
 585         }
 586
 587         r = sd_bus_message_close_container(reply);
 588         if (r < 0)
 589                 return r;
 590
 591         return sd_bus_send(NULL, reply, NULL);
 592 }
 593
 594 static int method_list_users(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 595         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 596         Manager *m = ASSERT_PTR(userdata);
 597         User *user;
 598         int r;
 599
 600         assert(message);
 601
 602         r = sd_bus_message_new_method_return(message, &reply);
 603         if (r < 0)
 604                 return r;
 605
 606         r = sd_bus_message_open_container(reply, 'a', "(uso)");
 607         if (r < 0)
 608                 return r;
 609
 610         HASHMAP_FOREACH(user, m->users) {
 611                 _cleanup_free_ char *p = NULL;
 612
 613                 p = user_bus_path(user);
 614                 if (!p)
 615                         return -ENOMEM;
 616
 617                 r = sd_bus_message_append(reply, "(uso)",
 618                                           (uint32_t) user->user_record->uid,
 619                                           user->user_record->user_name,
 620                                           p);
 621                 if (r < 0)
 622                         return r;
 623         }
 624
 625         r = sd_bus_message_close_container(reply);
 626         if (r < 0)
 627                 return r;
 628
 629         return sd_bus_send(NULL, reply, NULL);
 630 }
 631
 632 static int method_list_seats(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 633         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 634         Manager *m = ASSERT_PTR(userdata);
 635         Seat *seat;
 636         int r;
 637
 638         assert(message);
 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', "(so)");
 645         if (r < 0)
 646                 return r;
 647
 648         HASHMAP_FOREACH(seat, m->seats) {
 649                 _cleanup_free_ char *p = NULL;
 650
 651                 p = seat_bus_path(seat);
 652                 if (!p)
 653                         return -ENOMEM;
 654
 655                 r = sd_bus_message_append(reply, "(so)", seat->id, p);
 656                 if (r < 0)
 657                         return r;
 658         }
 659
 660         r = sd_bus_message_close_container(reply);
 661         if (r < 0)
 662                 return r;
 663
 664         return sd_bus_send(NULL, reply, NULL);
 665 }
 666
 667 static int method_list_inhibitors(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 668         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 669         Manager *m = ASSERT_PTR(userdata);
 670         Inhibitor *inhibitor;
 671         int r;
 672
 673         assert(message);
 674
 675         r = sd_bus_message_new_method_return(message, &reply);
 676         if (r < 0)
 677                 return r;
 678
 679         r = sd_bus_message_open_container(reply, 'a', "(ssssuu)");
 680         if (r < 0)
 681                 return r;
 682
 683         HASHMAP_FOREACH(inhibitor, m->inhibitors) {
 684
 685                 r = sd_bus_message_append(reply, "(ssssuu)",
 686                                           strempty(inhibit_what_to_string(inhibitor->what)),
 687                                           strempty(inhibitor->who),
 688                                           strempty(inhibitor->why),
 689                                           strempty(inhibit_mode_to_string(inhibitor->mode)),
 690                                           (uint32_t) inhibitor->uid,
 691                                           (uint32_t) inhibitor->pid.pid);
 692                 if (r < 0)
 693                         return r;
 694         }
 695
 696         r = sd_bus_message_close_container(reply);
 697         if (r < 0)
 698                 return r;
 699
 700         return sd_bus_send(NULL, reply, NULL);
 701 }
 702
 703 static int create_session(
 704                 sd_bus_message *message,
 705                 void *userdata,
 706                 sd_bus_error *error,
 707                 uid_t uid,
 708                 pid_t pid,
 709                 int pidfd,
 710                 const char *service,
 711                 const char *type,
 712                 const char *class,
 713                 const char *desktop,
 714                 const char *cseat,
 715                 uint32_t vtnr,
 716                 const char *tty,
 717                 const char *display,
 718                 int remote,
 719                 const char *remote_user,
 720                 const char *remote_host,
 721                 uint64_t flags) {
 722
 723         _cleanup_(pidref_done) PidRef leader = PIDREF_NULL;
 724         Manager *m = ASSERT_PTR(userdata);
 725         _cleanup_free_ char *id = NULL;
 726         Session *session = NULL;
 727         uint32_t audit_id = 0;
 728         User *user = NULL;
 729         Seat *seat = NULL;
 730         SessionType t;
 731         SessionClass c;
 732         int r;
 733
 734         assert(message);
 735
 736         if (!uid_is_valid(uid))
 737                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid UID");
 738
 739         if (flags != 0)
 740                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Flags must be zero.");
 741
 742         if (pidfd >= 0) {
 743                 r = pidref_set_pidfd(&leader, pidfd);
 744                 if (r < 0)
 745                         return r;
 746         } else if (pid == 0) {
 747                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 748                 pid_t p;
 749
 750                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 751                 if (r < 0)
 752                         return r;
 753
 754                 r = sd_bus_creds_get_pid(creds, &p);
 755                 if (r < 0)
 756                         return r;
 757
 758                 r = pidref_set_pid(&leader, p);
 759                 if (r < 0)
 760                         return r;
 761         } else {
 762                 assert(pid > 0);
 763
 764                 r = pidref_set_pid(&leader, pid);
 765                 if (r < 0)
 766                         return r;
 767         }
 768
 769         if (leader.pid == 1 || leader.pid == getpid_cached())
 770                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid leader PID");
 771
 772         if (isempty(type))
 773                 t = _SESSION_TYPE_INVALID;
 774         else {
 775                 t = session_type_from_string(type);
 776                 if (t < 0)
 777                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 778                                                  "Invalid session type %s", type);
 779         }
 780
 781         if (isempty(class))
 782                 c = _SESSION_CLASS_INVALID;
 783         else {
 784                 c = session_class_from_string(class);
 785                 if (c < 0)
 786                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 787                                                  "Invalid session class %s", class);
 788         }
 789
 790         if (isempty(desktop))
 791                 desktop = NULL;
 792         else {
 793                 if (!string_is_safe(desktop))
 794                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 795                                                  "Invalid desktop string %s", desktop);
 796         }
 797
 798         if (isempty(cseat))
 799                 seat = NULL;
 800         else {
 801                 seat = hashmap_get(m->seats, cseat);
 802                 if (!seat)
 803                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT,
 804                                                  "No seat '%s' known", cseat);
 805         }
 806
 807         if (tty_is_vc(tty)) {
 808                 int v;
 809
 810                 if (!seat)
 811                         seat = m->seat0;
 812                 else if (seat != m->seat0)
 813                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 814                                                  "TTY %s is virtual console but seat %s is not seat0", tty, seat->id);
 815
 816                 v = vtnr_from_tty(tty);
 817                 if (v <= 0)
 818                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 819                                                  "Cannot determine VT number from virtual console TTY %s", tty);
 820
 821                 if (vtnr == 0)
 822                         vtnr = (uint32_t) v;
 823                 else if (vtnr != (uint32_t) v)
 824                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 825                                                  "Specified TTY and VT number do not match");
 826
 827         } else if (tty_is_console(tty)) {
 828
 829                 if (!seat)
 830                         seat = m->seat0;
 831                 else if (seat != m->seat0)
 832                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 833                                                  "Console TTY specified but seat is not seat0");
 834
 835                 if (vtnr != 0)
 836                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 837                                                  "Console TTY specified but VT number is not 0");
 838         }
 839
 840         if (seat) {
 841                 if (seat_has_vts(seat)) {
 842                         if (vtnr <= 0 || vtnr > 63)
 843                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 844                                                          "VT number out of range");
 845                 } else {
 846                         if (vtnr != 0)
 847                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 848                                                          "Seat has no VTs but VT number not 0");
 849                 }
 850         }
 851
 852         if (t == _SESSION_TYPE_INVALID) {
 853                 if (!isempty(display))
 854                         t = SESSION_X11;
 855                 else if (!isempty(tty))
 856                         t = SESSION_TTY;
 857                 else
 858                         t = SESSION_UNSPECIFIED;
 859         }
 860
 861         if (c == _SESSION_CLASS_INVALID) {
 862                 if (t == SESSION_UNSPECIFIED)
 863                         c = SESSION_BACKGROUND;
 864                 else
 865                         c = SESSION_USER;
 866         }
 867
 868         /* Check if we are already in a logind session, and if so refuse. */
 869         r = manager_get_session_by_pidref(m, &leader, /* ret_session= */ NULL);
 870         if (r < 0)
 871                 return r;
 872         if (r > 0)
 873                 return sd_bus_error_setf(error, BUS_ERROR_SESSION_BUSY,
 874                                          "Already running in a session or user slice");
 875
 876         /* Old gdm and lightdm start the user-session on the same VT as the greeter session. But they destroy
 877          * the greeter session after the user-session and want the user-session to take over the VT. We need
 878          * to support this for backwards-compatibility, so make sure we allow new sessions on a VT that a
 879          * greeter is running on. Furthermore, to allow re-logins, we have to allow a greeter to take over a
 880          * used VT for the exact same reasons. */
 881         if (c != SESSION_GREETER &&
 882             vtnr > 0 &&
 883             vtnr < MALLOC_ELEMENTSOF(m->seat0->positions) &&
 884             m->seat0->positions[vtnr] &&
 885             m->seat0->positions[vtnr]->class != SESSION_GREETER)
 886                 return sd_bus_error_set(error, BUS_ERROR_SESSION_BUSY, "Already occupied by a session");
 887
 888         if (hashmap_size(m->sessions) >= m->sessions_max)
 889                 return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED,
 890                                          "Maximum number of sessions (%" PRIu64 ") reached, refusing further sessions.",
 891                                          m->sessions_max);
 892
 893         (void) audit_session_from_pid(leader.pid, &audit_id);
 894         if (audit_session_is_valid(audit_id)) {
 895                 /* Keep our session IDs and the audit session IDs in sync */
 896
 897                 if (asprintf(&id, "%"PRIu32, audit_id) < 0)
 898                         return -ENOMEM;
 899
 900                 /* Wut? There's already a session by this name and we didn't find it above? Weird, then let's
 901                  * not trust the audit data and let's better register a new ID */
 902                 if (hashmap_contains(m->sessions, id)) {
 903                         log_warning("Existing logind session ID %s used by new audit session, ignoring.", id);
 904                         audit_id = AUDIT_SESSION_INVALID;
 905                         id = mfree(id);
 906                 }
 907         }
 908
 909         if (!id) {
 910                 do {
 911                         id = mfree(id);
 912
 913                         if (asprintf(&id, "c%" PRIu64, ++m->session_counter) < 0)
 914                                 return -ENOMEM;
 915
 916                 } while (hashmap_contains(m->sessions, id));
 917         }
 918
 919         /* The generated names should not clash with 'auto' or 'self' */
 920         assert(!SESSION_IS_SELF(id));
 921         assert(!SESSION_IS_AUTO(id));
 922
 923         /* If we are not watching utmp already, try again */
 924         manager_reconnect_utmp(m);
 925
 926         r = manager_add_user_by_uid(m, uid, &user);
 927         if (r < 0)
 928                 goto fail;
 929
 930         r = manager_add_session(m, id, &session);
 931         if (r < 0)
 932                 goto fail;
 933
 934         session_set_user(session, user);
 935         r = session_set_leader_consume(session, TAKE_PIDREF(leader));
 936         if (r < 0)
 937                 goto fail;
 938
 939         session->original_type = session->type = t;
 940         session->remote = remote;
 941         session->vtnr = vtnr;
 942         session->class = c;
 943
 944         /* Once the first session that is of a pinning class shows up we'll change the GC mode for the user
 945          * from USER_GC_BY_ANY to USER_GC_BY_PIN, so that the user goes away once the last pinning session
 946          * goes away. Background: we want that user@.service – when started manually – remains around (which
 947          * itself is a non-pinning session), but gets stopped when the last pinning session goes away. */
 948
 949         if (SESSION_CLASS_PIN_USER(c))
 950                 user->gc_mode = USER_GC_BY_PIN;
 951
 952         if (!isempty(tty)) {
 953                 session->tty = strdup(tty);
 954                 if (!session->tty) {
 955                         r = -ENOMEM;
 956                         goto fail;
 957                 }
 958
 959                 session->tty_validity = TTY_FROM_PAM;
 960         }
 961
 962         if (!isempty(display)) {
 963                 session->display = strdup(display);
 964                 if (!session->display) {
 965                         r = -ENOMEM;
 966                         goto fail;
 967                 }
 968         }
 969
 970         if (!isempty(remote_user)) {
 971                 session->remote_user = strdup(remote_user);
 972                 if (!session->remote_user) {
 973                         r = -ENOMEM;
 974                         goto fail;
 975                 }
 976         }
 977
 978         if (!isempty(remote_host)) {
 979                 session->remote_host = strdup(remote_host);
 980                 if (!session->remote_host) {
 981                         r = -ENOMEM;
 982                         goto fail;
 983                 }
 984         }
 985
 986         if (!isempty(service)) {
 987                 session->service = strdup(service);
 988                 if (!session->service) {
 989                         r = -ENOMEM;
 990                         goto fail;
 991                 }
 992         }
 993
 994         if (!isempty(desktop)) {
 995                 session->desktop = strdup(desktop);
 996                 if (!session->desktop) {
 997                         r = -ENOMEM;
 998                         goto fail;
 999                 }
1000         }
1001
1002         if (seat) {
1003                 r = seat_attach_session(seat, session);
1004                 if (r < 0)
1005                         goto fail;
1006         }
1007
1008         r = sd_bus_message_enter_container(message, 'a', "(sv)");
1009         if (r < 0)
1010                 goto fail;
1011
1012         r = session_start(session, message, error);
1013         if (r < 0)
1014                 goto fail;
1015
1016         r = sd_bus_message_exit_container(message);
1017         if (r < 0)
1018                 goto fail;
1019
1020         session->create_message = sd_bus_message_ref(message);
1021
1022         /* Now call into session_send_create_reply(), which will reply to this method call for us. Or it
1023          * won't – in case we just spawned a session scope and/or user service manager, and they aren't ready
1024          * yet. We'll call session_create_reply() again once the session scope or the user service manager is
1025          * ready, where the function will check again if a reply is then ready to be sent, and then do so if
1026          * all is complete - or wait again. */
1027         r = session_send_create_reply(session, /* error= */ NULL);
1028         if (r < 0)
1029                 return r;
1030
1031         return 1;
1032
1033 fail:
1034         if (session)
1035                 session_add_to_gc_queue(session);
1036
1037         if (user)
1038                 user_add_to_gc_queue(user);
1039
1040         return r;
1041 }
1042
1043 static int method_create_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1044         const char *service, *type, *class, *cseat, *tty, *display, *remote_user, *remote_host, *desktop;
1045         pid_t leader;
1046         uid_t uid;
1047         int remote;
1048         uint32_t vtnr = 0;
1049         int r;
1050
1051         assert(message);
1052
1053         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
1054         assert_cc(sizeof(uid_t) == sizeof(uint32_t));
1055
1056         r = sd_bus_message_read(message,
1057                                 "uusssssussbss",
1058                                 &uid,
1059                                 &leader,
1060                                 &service,
1061                                 &type,
1062                                 &class,
1063                                 &desktop,
1064                                 &cseat,
1065                                 &vtnr,
1066                                 &tty,
1067                                 &display,
1068                                 &remote,
1069                                 &remote_user,
1070                                 &remote_host);
1071         if (r < 0)
1072                 return r;
1073
1074         return create_session(
1075                         message,
1076                         userdata,
1077                         error,
1078                         uid,
1079                         leader,
1080                         /* pidfd = */ -EBADF,
1081                         service,
1082                         type,
1083                         class,
1084                         desktop,
1085                         cseat,
1086                         vtnr,
1087                         tty,
1088                         display,
1089                         remote,
1090                         remote_user,
1091                         remote_host,
1092                         /* flags = */ 0);
1093 }
1094
1095 static int method_create_session_pidfd(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1096         const char *service, *type, *class, *cseat, *tty, *display, *remote_user, *remote_host, *desktop;
1097         int leaderfd = -EBADF;
1098         uid_t uid;
1099         int remote;
1100         uint32_t vtnr = 0;
1101         uint64_t flags;
1102         int r;
1103
1104         r = sd_bus_message_read(message,
1105                                 "uhsssssussbsst",
1106                                 &uid,
1107                                 &leaderfd,
1108                                 &service,
1109                                 &type,
1110                                 &class,
1111                                 &desktop,
1112                                 &cseat,
1113                                 &vtnr,
1114                                 &tty,
1115                                 &display,
1116                                 &remote,
1117                                 &remote_user,
1118                                 &remote_host,
1119                                 &flags);
1120         if (r < 0)
1121                 return r;
1122
1123         return create_session(
1124                         message,
1125                         userdata,
1126                         error,
1127                         uid,
1128                         /* pid = */ 0,
1129                         leaderfd,
1130                         service,
1131                         type,
1132                         class,
1133                         desktop,
1134                         cseat,
1135                         vtnr,
1136                         tty,
1137                         display,
1138                         remote,
1139                         remote_user,
1140                         remote_host,
1141                         flags);
1142 }
1143
1144 static int method_release_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1145         Manager *m = ASSERT_PTR(userdata);
1146         Session *session;
1147         const char *name;
1148         int r;
1149
1150         assert(message);
1151
1152         r = sd_bus_message_read(message, "s", &name);
1153         if (r < 0)
1154                 return r;
1155
1156         r = manager_get_session_from_creds(m, message, name, error, &session);
1157         if (r < 0)
1158                 return r;
1159
1160         r = session_release(session);
1161         if (r < 0)
1162                 return r;
1163
1164         return sd_bus_reply_method_return(message, NULL);
1165 }
1166
1167 static int method_activate_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1168         Manager *m = ASSERT_PTR(userdata);
1169         Session *session;
1170         const char *name;
1171         int r;
1172
1173         assert(message);
1174
1175         r = sd_bus_message_read(message, "s", &name);
1176         if (r < 0)
1177                 return r;
1178
1179         r = manager_get_session_from_creds(m, message, name, error, &session);
1180         if (r < 0)
1181                 return r;
1182
1183         /* PolicyKit is done by bus_session_method_activate() */
1184
1185         return bus_session_method_activate(message, session, error);
1186 }
1187
1188 static int method_activate_session_on_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1189         const char *session_name, *seat_name;
1190         Manager *m = ASSERT_PTR(userdata);
1191         Session *session;
1192         Seat *seat;
1193         int r;
1194
1195         assert(message);
1196
1197         /* Same as ActivateSession() but refuses to work if the seat doesn't match */
1198
1199         r = sd_bus_message_read(message, "ss", &session_name, &seat_name);
1200         if (r < 0)
1201                 return r;
1202
1203         r = manager_get_session_from_creds(m, message, session_name, error, &session);
1204         if (r < 0)
1205                 return r;
1206
1207         r = manager_get_seat_from_creds(m, message, seat_name, error, &seat);
1208         if (r < 0)
1209                 return r;
1210
1211         if (session->seat != seat)
1212                 return sd_bus_error_setf(error, BUS_ERROR_SESSION_NOT_ON_SEAT,
1213                                          "Session %s not on seat %s", session_name, seat_name);
1214
1215         r = check_polkit_chvt(message, m, error);
1216         if (r < 0)
1217                 return r;
1218         if (r == 0)
1219                 return 1; /* Will call us back */
1220
1221         r = session_activate(session);
1222         if (r < 0)
1223                 return r;
1224
1225         return sd_bus_reply_method_return(message, NULL);
1226 }
1227
1228 static int method_lock_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1229         Manager *m = ASSERT_PTR(userdata);
1230         Session *session;
1231         const char *name;
1232         int r;
1233
1234         assert(message);
1235
1236         r = sd_bus_message_read(message, "s", &name);
1237         if (r < 0)
1238                 return r;
1239
1240         r = manager_get_session_from_creds(m, message, name, error, &session);
1241         if (r < 0)
1242                 return r;
1243
1244         return bus_session_method_lock(message, session, error);
1245 }
1246
1247 static int method_lock_sessions(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1248         Manager *m = ASSERT_PTR(userdata);
1249         int r;
1250
1251         assert(message);
1252
1253         r = bus_verify_polkit_async(
1254                         message,
1255                         "org.freedesktop.login1.lock-sessions",
1256                         /* details= */ NULL,
1257                         &m->polkit_registry,
1258                         error);
1259         if (r < 0)
1260                 return r;
1261         if (r == 0)
1262                 return 1; /* Will call us back */
1263
1264         r = session_send_lock_all(m, streq(sd_bus_message_get_member(message), "LockSessions"));
1265         if (r < 0)
1266                 return r;
1267
1268         return sd_bus_reply_method_return(message, NULL);
1269 }
1270
1271 static int method_kill_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1272         const char *name;
1273         Manager *m = ASSERT_PTR(userdata);
1274         Session *session;
1275         int r;
1276
1277         assert(message);
1278
1279         r = sd_bus_message_read(message, "s", &name);
1280         if (r < 0)
1281                 return r;
1282
1283         r = manager_get_session_from_creds(m, message, name, error, &session);
1284         if (r < 0)
1285                 return r;
1286
1287         return bus_session_method_kill(message, session, error);
1288 }
1289
1290 static int method_kill_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1291         Manager *m = ASSERT_PTR(userdata);
1292         uint32_t uid;
1293         User *user;
1294         int r;
1295
1296         assert(message);
1297
1298         r = sd_bus_message_read(message, "u", &uid);
1299         if (r < 0)
1300                 return r;
1301
1302         r = manager_get_user_from_creds(m, message, uid, error, &user);
1303         if (r < 0)
1304                 return r;
1305
1306         return bus_user_method_kill(message, user, error);
1307 }
1308
1309 static int method_terminate_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1310         Manager *m = ASSERT_PTR(userdata);
1311         const char *name;
1312         Session *session;
1313         int r;
1314
1315         assert(message);
1316
1317         r = sd_bus_message_read(message, "s", &name);
1318         if (r < 0)
1319                 return r;
1320
1321         r = manager_get_session_from_creds(m, message, name, error, &session);
1322         if (r < 0)
1323                 return r;
1324
1325         return bus_session_method_terminate(message, session, error);
1326 }
1327
1328 static int method_terminate_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1329         Manager *m = ASSERT_PTR(userdata);
1330         uint32_t uid;
1331         User *user;
1332         int r;
1333
1334         assert(message);
1335
1336         r = sd_bus_message_read(message, "u", &uid);
1337         if (r < 0)
1338                 return r;
1339
1340         r = manager_get_user_from_creds(m, message, uid, error, &user);
1341         if (r < 0)
1342                 return r;
1343
1344         return bus_user_method_terminate(message, user, error);
1345 }
1346
1347 static int method_terminate_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1348         Manager *m = ASSERT_PTR(userdata);
1349         const char *name;
1350         Seat *seat;
1351         int r;
1352
1353         assert(message);
1354
1355         r = sd_bus_message_read(message, "s", &name);
1356         if (r < 0)
1357                 return r;
1358
1359         r = manager_get_seat_from_creds(m, message, name, error, &seat);
1360         if (r < 0)
1361                 return r;
1362
1363         return bus_seat_method_terminate(message, seat, error);
1364 }
1365
1366 static int method_set_user_linger(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1367         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
1368         _cleanup_free_ char *cc = NULL;
1369         Manager *m = ASSERT_PTR(userdata);
1370         int r, b, interactive;
1371         struct passwd *pw;
1372         const char *path;
1373         uint32_t uid, auth_uid;
1374
1375         assert(message);
1376
1377         r = sd_bus_message_read(message, "ubb", &uid, &b, &interactive);
1378         if (r < 0)
1379                 return r;
1380
1381         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID |
1382                                                SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds);
1383         if (r < 0)
1384                 return r;
1385
1386         if (!uid_is_valid(uid)) {
1387                 /* Note that we get the owner UID of the session or user unit,
1388                  * not the actual client UID here! */
1389                 r = sd_bus_creds_get_owner_uid(creds, &uid);
1390                 if (r < 0)
1391                         return r;
1392         }
1393
1394         /* owner_uid is racy, so for authorization we must use euid */
1395         r = sd_bus_creds_get_euid(creds, &auth_uid);
1396         if (r < 0)
1397                 return r;
1398
1399         errno = 0;
1400         pw = getpwuid(uid);
1401         if (!pw)
1402                 return errno_or_else(ENOENT);
1403
1404         r = bus_verify_polkit_async_full(
1405                         message,
1406                         uid == auth_uid ? "org.freedesktop.login1.set-self-linger" :
1407                                           "org.freedesktop.login1.set-user-linger",
1408                         /* details= */ NULL,
1409                         interactive,
1410                         /* good_user= */ UID_INVALID,
1411                         &m->polkit_registry,
1412                         error);
1413         if (r < 0)
1414                 return r;
1415         if (r == 0)
1416                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1417
1418         (void) mkdir_p_label("/var/lib/systemd", 0755);
1419         r = mkdir_safe_label("/var/lib/systemd/linger", 0755, 0, 0, MKDIR_WARN_MODE);
1420         if (r < 0)
1421                 return r;
1422
1423         cc = cescape(pw->pw_name);
1424         if (!cc)
1425                 return -ENOMEM;
1426
1427         path = strjoina("/var/lib/systemd/linger/", cc);
1428         if (b) {
1429                 User *u;
1430
1431                 r = touch(path);
1432                 if (r < 0)
1433                         return r;
1434
1435                 if (manager_add_user_by_uid(m, uid, &u) >= 0)
1436                         user_start(u);
1437
1438         } else {
1439                 User *u;
1440
1441                 r = unlink(path);
1442                 if (r < 0 && errno != ENOENT)
1443                         return -errno;
1444
1445                 u = hashmap_get(m->users, UID_TO_PTR(uid));
1446                 if (u)
1447                         user_add_to_gc_queue(u);
1448         }
1449
1450         return sd_bus_reply_method_return(message, NULL);
1451 }
1452
1453 static int trigger_device(Manager *m, sd_device *parent) {
1454         _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL;
1455         int r;
1456
1457         assert(m);
1458
1459         r = sd_device_enumerator_new(&e);
1460         if (r < 0)
1461                 return r;
1462
1463         r = sd_device_enumerator_allow_uninitialized(e);
1464         if (r < 0)
1465                 return r;
1466
1467         if (parent) {
1468                 r = sd_device_enumerator_add_match_parent(e, parent);
1469                 if (r < 0)
1470                         return r;
1471         }
1472
1473         FOREACH_DEVICE(e, d) {
1474                 r = sd_device_trigger(d, SD_DEVICE_CHANGE);
1475                 if (r < 0)
1476                         log_device_debug_errno(d, r, "Failed to trigger device, ignoring: %m");
1477         }
1478
1479         return 0;
1480 }
1481
1482 static int attach_device(Manager *m, const char *seat, const char *sysfs, sd_bus_error *error) {
1483         _cleanup_(sd_device_unrefp) sd_device *d = NULL;
1484         _cleanup_free_ char *rule = NULL, *file = NULL;
1485         const char *id_for_seat;
1486         int r;
1487
1488         assert(m);
1489         assert(seat);
1490         assert(sysfs);
1491
1492         r = sd_device_new_from_syspath(&d, sysfs);
1493         if (r < 0)
1494                 return sd_bus_error_set_errnof(error, r, "Failed to open device '%s': %m", sysfs);
1495
1496         if (sd_device_has_current_tag(d, "seat") <= 0)
1497                 return sd_bus_error_set_errnof(error, ENODEV, "Device '%s' lacks 'seat' udev tag.", sysfs);
1498
1499         if (sd_device_get_property_value(d, "ID_FOR_SEAT", &id_for_seat) < 0)
1500                 return sd_bus_error_set_errnof(error, ENODEV, "Device '%s' lacks 'ID_FOR_SEAT' udev property.", sysfs);
1501
1502         if (asprintf(&file, "/etc/udev/rules.d/72-seat-%s.rules", id_for_seat) < 0)
1503                 return -ENOMEM;
1504
1505         if (asprintf(&rule, "TAG==\"seat\", ENV{ID_FOR_SEAT}==\"%s\", ENV{ID_SEAT}=\"%s\"", id_for_seat, seat) < 0)
1506                 return -ENOMEM;
1507
1508         (void) mkdir_p_label("/etc/udev/rules.d", 0755);
1509         r = write_string_file_atomic_label(file, rule);
1510         if (r < 0)
1511                 return r;
1512
1513         return trigger_device(m, d);
1514 }
1515
1516 static int flush_devices(Manager *m) {
1517         _cleanup_closedir_ DIR *d = NULL;
1518
1519         assert(m);
1520
1521         d = opendir("/etc/udev/rules.d");
1522         if (!d) {
1523                 if (errno != ENOENT)
1524                         log_warning_errno(errno, "Failed to open /etc/udev/rules.d: %m");
1525         } else
1526                 FOREACH_DIRENT_ALL(de, d, break) {
1527                         if (!dirent_is_file(de))
1528                                 continue;
1529
1530                         if (!startswith(de->d_name, "72-seat-"))
1531                                 continue;
1532
1533                         if (!endswith(de->d_name, ".rules"))
1534                                 continue;
1535
1536                         if (unlinkat(dirfd(d), de->d_name, 0) < 0)
1537                                 log_warning_errno(errno, "Failed to unlink %s: %m", de->d_name);
1538                 }
1539
1540         return trigger_device(m, NULL);
1541 }
1542
1543 static int method_attach_device(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1544         const char *sysfs, *seat;
1545         Manager *m = ASSERT_PTR(userdata);
1546         int interactive, r;
1547
1548         assert(message);
1549
1550         r = sd_bus_message_read(message, "ssb", &seat, &sysfs, &interactive);
1551         if (r < 0)
1552                 return r;
1553
1554         if (!path_is_normalized(sysfs))
1555                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not normalized", sysfs);
1556         if (!path_startswith(sysfs, "/sys"))
1557                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not in /sys", sysfs);
1558
1559         if (SEAT_IS_SELF(seat) || SEAT_IS_AUTO(seat)) {
1560                 Seat *found;
1561
1562                 r = manager_get_seat_from_creds(m, message, seat, error, &found);
1563                 if (r < 0)
1564                         return r;
1565
1566                 seat = found->id;
1567
1568         } else if (!seat_name_is_valid(seat)) /* Note that a seat does not have to exist yet for this operation to succeed */
1569                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Seat name %s is not valid", seat);
1570
1571         r = bus_verify_polkit_async_full(
1572                         message,
1573                         "org.freedesktop.login1.attach-device",
1574                         /* details= */ NULL,
1575                         interactive,
1576                         /* good_user= */ UID_INVALID,
1577                         &m->polkit_registry,
1578                         error);
1579         if (r < 0)
1580                 return r;
1581         if (r == 0)
1582                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1583
1584         r = attach_device(m, seat, sysfs, error);
1585         if (r < 0)
1586                 return r;
1587
1588         return sd_bus_reply_method_return(message, NULL);
1589 }
1590
1591 static int method_flush_devices(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1592         Manager *m = ASSERT_PTR(userdata);
1593         int interactive, r;
1594
1595         assert(message);
1596
1597         r = sd_bus_message_read(message, "b", &interactive);
1598         if (r < 0)
1599                 return r;
1600
1601         r = bus_verify_polkit_async_full(
1602                         message,
1603                         "org.freedesktop.login1.flush-devices",
1604                         /* details= */ NULL,
1605                         interactive,
1606                         /* good_user= */ UID_INVALID,
1607                         &m->polkit_registry,
1608                         error);
1609         if (r < 0)
1610                 return r;
1611         if (r == 0)
1612                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1613
1614         r = flush_devices(m);
1615         if (r < 0)
1616                 return r;
1617
1618         return sd_bus_reply_method_return(message, NULL);
1619 }
1620
1621 static int have_multiple_sessions(
1622                 Manager *m,
1623                 uid_t uid) {
1624
1625         Session *session;
1626
1627         assert(m);
1628
1629         /* Check for other users' sessions. Greeter sessions do not
1630          * count, and non-login sessions do not count either. */
1631         HASHMAP_FOREACH(session, m->sessions)
1632                 if (session->class == SESSION_USER &&
1633                     session->user->user_record->uid != uid)
1634                         return true;
1635
1636         return false;
1637 }
1638
1639 static int bus_manager_log_shutdown(
1640                 Manager *m,
1641                 const HandleActionData *a) {
1642         assert(m);
1643         assert(a);
1644
1645         const char *message = a->message ?: "System is shutting down";
1646         const char *log_verb = a->log_verb ? strjoina("SHUTDOWN=", a->log_verb) : NULL;
1647
1648         return log_struct(LOG_NOTICE,
1649                           "MESSAGE_ID=%s", a->message_id ?: SD_MESSAGE_SHUTDOWN_STR,
1650                           LOG_MESSAGE("%s%s%s%s.",
1651                                       message,
1652                                       m->wall_message ? " (" : "",
1653                                       strempty(m->wall_message),
1654                                       m->wall_message ? ")" : ""),
1655                           log_verb);
1656 }
1657
1658 static int lid_switch_ignore_handler(sd_event_source *e, uint64_t usec, void *userdata) {
1659         Manager *m = ASSERT_PTR(userdata);
1660
1661         assert(e);
1662
1663         m->lid_switch_ignore_event_source = sd_event_source_unref(m->lid_switch_ignore_event_source);
1664         return 0;
1665 }
1666
1667 int manager_set_lid_switch_ignore(Manager *m, usec_t until) {
1668         int r;
1669
1670         assert(m);
1671
1672         if (until <= now(CLOCK_MONOTONIC))
1673                 return 0;
1674
1675         /* We want to ignore the lid switch for a while after each
1676          * suspend, and after boot-up. Hence let's install a timer for
1677          * this. As long as the event source exists we ignore the lid
1678          * switch. */
1679
1680         if (m->lid_switch_ignore_event_source) {
1681                 usec_t u;
1682
1683                 r = sd_event_source_get_time(m->lid_switch_ignore_event_source, &u);
1684                 if (r < 0)
1685                         return r;
1686
1687                 if (until <= u)
1688                         return 0;
1689
1690                 r = sd_event_source_set_time(m->lid_switch_ignore_event_source, until);
1691         } else
1692                 r = sd_event_add_time(
1693                                 m->event,
1694                                 &m->lid_switch_ignore_event_source,
1695                                 CLOCK_MONOTONIC,
1696                                 until, 0,
1697                                 lid_switch_ignore_handler, m);
1698
1699         return r;
1700 }
1701
1702 static int send_prepare_for(Manager *m, const HandleActionData *a, bool _active) {
1703         int k = 0, r, active = _active;
1704
1705         assert(m);
1706         assert(a);
1707         assert(IN_SET(a->inhibit_what, INHIBIT_SHUTDOWN, INHIBIT_SLEEP));
1708
1709         /* We need to send both old and new signal for backward compatibility. The newer one allows clients
1710          * to know which type of reboot is going to happen, as they might be doing different actions (e.g.:
1711          * on soft-reboot), and it is sent first, so that clients know that if they receive the old one
1712          * first then they don't have to wait for the new one, as it means it's not supported. So, do not
1713          * change the order here, as it is an API. */
1714         if (a->inhibit_what == INHIBIT_SHUTDOWN) {
1715                 k = sd_bus_emit_signal(m->bus,
1716                                        "/org/freedesktop/login1",
1717                                        "org.freedesktop.login1.Manager",
1718                                        "PrepareForShutdownWithMetadata",
1719                                        "ba{sv}",
1720                                        active,
1721                                        1,
1722                                        "type",
1723                                        "s",
1724                                        handle_action_to_string(a->handle));
1725                 if (k < 0)
1726                         log_debug_errno(k, "Failed to emit PrepareForShutdownWithMetadata(): %m");
1727         }
1728
1729         r = sd_bus_emit_signal(m->bus,
1730                                "/org/freedesktop/login1",
1731                                "org.freedesktop.login1.Manager",
1732                                a->inhibit_what == INHIBIT_SHUTDOWN ? "PrepareForShutdown" : "PrepareForSleep",
1733                                "b",
1734                                active);
1735         if (r < 0)
1736                 log_debug_errno(r, "Failed to emit PrepareForShutdown(): %m");
1737
1738         return RET_GATHER(k, r);
1739 }
1740
1741 static int execute_shutdown_or_sleep(
1742                 Manager *m,
1743                 const HandleActionData *a,
1744                 sd_bus_error *error) {
1745
1746         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1747         const char *p;
1748         int r;
1749
1750         assert(m);
1751         assert(!m->action_job);
1752         assert(a);
1753
1754         if (a->inhibit_what == INHIBIT_SHUTDOWN)
1755                 bus_manager_log_shutdown(m, a);
1756
1757         r = bus_call_method(
1758                         m->bus,
1759                         bus_systemd_mgr,
1760                         "StartUnit",
1761                         error,
1762                         &reply,
1763                         "ss", a->target, "replace-irreversibly");
1764         if (r < 0)
1765                 goto error;
1766
1767         r = sd_bus_message_read(reply, "o", &p);
1768         if (r < 0)
1769                 goto error;
1770
1771         m->action_job = strdup(p);
1772         if (!m->action_job) {
1773                 r = -ENOMEM;
1774                 goto error;
1775         }
1776
1777         m->delayed_action = a;
1778
1779         /* Make sure the lid switch is ignored for a while */
1780         manager_set_lid_switch_ignore(m, usec_add(now(CLOCK_MONOTONIC), m->holdoff_timeout_usec));
1781
1782         return 0;
1783
1784 error:
1785         /* Tell people that they now may take a lock again */
1786         (void) send_prepare_for(m, a, false);
1787
1788         return r;
1789 }
1790
1791 int manager_dispatch_delayed(Manager *manager, bool timeout) {
1792         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1793         Inhibitor *offending = NULL;
1794         int r;
1795
1796         assert(manager);
1797
1798         if (!manager->delayed_action || manager->action_job)
1799                 return 0;
1800
1801         if (manager_is_inhibited(manager, manager->delayed_action->inhibit_what, INHIBIT_DELAY, NULL, false, false, 0, &offending)) {
1802                 _cleanup_free_ char *comm = NULL, *u = NULL;
1803
1804                 if (!timeout)
1805                         return 0;
1806
1807                 (void) pidref_get_comm(&offending->pid, &comm);
1808                 u = uid_to_name(offending->uid);
1809
1810                 log_notice("Delay lock is active (UID "UID_FMT"/%s, PID "PID_FMT"/%s) but inhibitor timeout is reached.",
1811                            offending->uid, strna(u),
1812                            offending->pid.pid, strna(comm));
1813         }
1814
1815         /* Actually do the operation */
1816         r = execute_shutdown_or_sleep(manager, manager->delayed_action, &error);
1817         if (r < 0) {
1818                 log_warning("Error during inhibitor-delayed operation (already returned success to client): %s",
1819                             bus_error_message(&error, r));
1820
1821                 manager->delayed_action = NULL;
1822         }
1823
1824         return 1; /* We did some work. */
1825 }
1826
1827 static int manager_inhibit_timeout_handler(
1828                         sd_event_source *s,
1829                         uint64_t usec,
1830                         void *userdata) {
1831
1832         Manager *manager = ASSERT_PTR(userdata);
1833
1834         assert(manager->inhibit_timeout_source == s);
1835
1836         return manager_dispatch_delayed(manager, true);
1837 }
1838
1839 static int delay_shutdown_or_sleep(
1840                 Manager *m,
1841                 const HandleActionData *a) {
1842
1843         int r;
1844
1845         assert(m);
1846         assert(a);
1847
1848         if (m->inhibit_timeout_source) {
1849                 r = sd_event_source_set_time_relative(m->inhibit_timeout_source, m->inhibit_delay_max);
1850                 if (r < 0)
1851                         return log_error_errno(r, "sd_event_source_set_time_relative() failed: %m");
1852
1853                 r = sd_event_source_set_enabled(m->inhibit_timeout_source, SD_EVENT_ONESHOT);
1854                 if (r < 0)
1855                         return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
1856         } else {
1857                 r = sd_event_add_time_relative(
1858                                 m->event,
1859                                 &m->inhibit_timeout_source,
1860                                 CLOCK_MONOTONIC, m->inhibit_delay_max, 0,
1861                                 manager_inhibit_timeout_handler, m);
1862                 if (r < 0)
1863                         return r;
1864         }
1865
1866         m->delayed_action = a;
1867
1868         return 0;
1869 }
1870
1871 int bus_manager_shutdown_or_sleep_now_or_later(
1872                 Manager *m,
1873                 const HandleActionData *a,
1874                 sd_bus_error *error) {
1875
1876         _cleanup_free_ char *load_state = NULL;
1877         bool delayed;
1878         int r;
1879
1880         assert(m);
1881         assert(a);
1882         assert(!m->action_job);
1883
1884         r = unit_load_state(m->bus, a->target, &load_state);
1885         if (r < 0)
1886                 return r;
1887
1888         if (!streq(load_state, "loaded"))
1889                 return log_notice_errno(SYNTHETIC_ERRNO(EACCES),
1890                                         "Unit %s is %s, refusing operation.",
1891                                         a->target, load_state);
1892
1893         /* Tell everybody to prepare for shutdown/sleep */
1894         (void) send_prepare_for(m, a, true);
1895
1896         delayed =
1897                 m->inhibit_delay_max > 0 &&
1898                 manager_is_inhibited(m, a->inhibit_what, INHIBIT_DELAY, NULL, false, false, 0, NULL);
1899
1900         if (delayed)
1901                 /* Shutdown is delayed, keep in mind what we
1902                  * want to do, and start a timeout */
1903                 r = delay_shutdown_or_sleep(m, a);
1904         else
1905                 /* Shutdown is not delayed, execute it
1906                  * immediately */
1907                 r = execute_shutdown_or_sleep(m, a, error);
1908
1909         return r;
1910 }
1911
1912 static int verify_shutdown_creds(
1913                 Manager *m,
1914                 sd_bus_message *message,
1915                 const HandleActionData *a,
1916                 uint64_t flags,
1917                 sd_bus_error *error) {
1918
1919         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
1920         bool multiple_sessions, blocked, interactive;
1921         uid_t uid;
1922         int r;
1923
1924         assert(m);
1925         assert(a);
1926         assert(message);
1927
1928         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
1929         if (r < 0)
1930                 return r;
1931
1932         r = sd_bus_creds_get_euid(creds, &uid);
1933         if (r < 0)
1934                 return r;
1935
1936         r = have_multiple_sessions(m, uid);
1937         if (r < 0)
1938                 return r;
1939
1940         multiple_sessions = r > 0;
1941         blocked = manager_is_inhibited(m, a->inhibit_what, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
1942         interactive = flags & SD_LOGIND_INTERACTIVE;
1943
1944         if (multiple_sessions) {
1945                 r = bus_verify_polkit_async_full(
1946                                 message,
1947                                 a->polkit_action_multiple_sessions,
1948                                 /* details= */ NULL,
1949                                 interactive,
1950                                 /* good_user= */ UID_INVALID,
1951                                 &m->polkit_registry,
1952                                 error);
1953                 if (r < 0)
1954                         return r;
1955                 if (r == 0)
1956                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1957         }
1958
1959         if (blocked) {
1960                 /* We don't check polkit for root here, because you can't be more privileged than root */
1961                 if (uid == 0 && (flags & SD_LOGIND_ROOT_CHECK_INHIBITORS))
1962                         return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED,
1963                                                  "Access denied to root due to active block inhibitor");
1964
1965                 r = bus_verify_polkit_async_full(
1966                                 message,
1967                                 a->polkit_action_ignore_inhibit,
1968                                 /* details= */ NULL,
1969                                 interactive,
1970                                 /* good_user= */ UID_INVALID,
1971                                 &m->polkit_registry,
1972                                 error);
1973                 if (r < 0)
1974                         return r;
1975                 if (r == 0)
1976                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1977         }
1978
1979         if (!multiple_sessions && !blocked) {
1980                 r = bus_verify_polkit_async_full(
1981                                 message,
1982                                 a->polkit_action,
1983                                 /* details= */ NULL,
1984                                 interactive,
1985                                 /* good_user= */ UID_INVALID,
1986                                 &m->polkit_registry,
1987                                 error);
1988                 if (r < 0)
1989                         return r;
1990                 if (r == 0)
1991                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1992         }
1993
1994         return 0;
1995 }
1996
1997 static int setup_wall_message_timer(Manager *m, sd_bus_message* message) {
1998         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
1999         int r;
2000
2001         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
2002         if (r >= 0) {
2003                 const char *tty = NULL;
2004
2005                 (void) sd_bus_creds_get_uid(creds, &m->scheduled_shutdown_uid);
2006                 (void) sd_bus_creds_get_tty(creds, &tty);
2007
2008                 r = free_and_strdup(&m->scheduled_shutdown_tty, tty);
2009                 if (r < 0)
2010                         return log_oom();
2011         }
2012
2013         r = manager_setup_wall_message_timer(m);
2014         if (r < 0)
2015                 return r;
2016
2017         return 0;
2018 }
2019
2020 static int method_do_shutdown_or_sleep(
2021                 Manager *m,
2022                 sd_bus_message *message,
2023                 HandleAction action,
2024                 bool with_flags,
2025                 sd_bus_error *error) {
2026
2027         uint64_t flags;
2028         int r;
2029
2030         assert(m);
2031         assert(message);
2032         assert(HANDLE_ACTION_IS_SHUTDOWN(action) || HANDLE_ACTION_IS_SLEEP(action));
2033
2034         if (with_flags) {
2035                 /* New style method: with flags parameter (and interactive bool in the bus message header) */
2036                 r = sd_bus_message_read(message, "t", &flags);
2037                 if (r < 0)
2038                         return r;
2039                 if ((flags & ~SD_LOGIND_SHUTDOWN_AND_SLEEP_FLAGS_PUBLIC) != 0)
2040                         return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS,
2041                                                 "Invalid flags parameter");
2042
2043                 if (FLAGS_SET(flags, (SD_LOGIND_REBOOT_VIA_KEXEC|SD_LOGIND_SOFT_REBOOT)))
2044                         return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS,
2045                                                 "Both reboot via kexec and soft reboot selected, which is not supported");
2046
2047                 if (action != HANDLE_REBOOT) {
2048                         if (flags & SD_LOGIND_REBOOT_VIA_KEXEC)
2049                                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS,
2050                                                         "Reboot via kexec option is only applicable with reboot operations");
2051                         if ((flags & SD_LOGIND_SOFT_REBOOT) || (flags & SD_LOGIND_SOFT_REBOOT_IF_NEXTROOT_SET_UP))
2052                                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS,
2053                                                         "Soft reboot option is only applicable with reboot operations");
2054                 }
2055         } else {
2056                 /* Old style method: no flags parameter, but interactive bool passed as boolean in
2057                  * payload. Let's convert this argument to the new-style flags parameter for our internal
2058                  * use. */
2059                 int interactive;
2060
2061                 r = sd_bus_message_read(message, "b", &interactive);
2062                 if (r < 0)
2063                         return r;
2064
2065                 flags = interactive ? SD_LOGIND_INTERACTIVE : 0;
2066         }
2067
2068         const HandleActionData *a = NULL;
2069
2070         if ((flags & SD_LOGIND_SOFT_REBOOT) ||
2071             ((flags & SD_LOGIND_SOFT_REBOOT_IF_NEXTROOT_SET_UP) && path_is_os_tree("/run/nextroot") > 0))
2072                 a = handle_action_lookup(HANDLE_SOFT_REBOOT);
2073         else if ((flags & SD_LOGIND_REBOOT_VIA_KEXEC) && kexec_loaded())
2074                 a = handle_action_lookup(HANDLE_KEXEC);
2075
2076         if (action == HANDLE_SLEEP) {
2077                 HandleAction selected;
2078
2079                 selected = handle_action_sleep_select(m->handle_action_sleep_mask);
2080                 if (selected < 0)
2081                         return sd_bus_error_set(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
2082                                                 "None of the configured sleep operations are supported");
2083
2084                 assert_se(a = handle_action_lookup(selected));
2085
2086         } else if (HANDLE_ACTION_IS_SLEEP(action)) {
2087                 SleepSupport support;
2088
2089                 assert_se(a = handle_action_lookup(action));
2090
2091                 assert(a->sleep_operation >= 0);
2092                 assert(a->sleep_operation < _SLEEP_OPERATION_MAX);
2093
2094                 r = sleep_supported_full(a->sleep_operation, &support);
2095                 if (r < 0)
2096                         return r;
2097                 if (r == 0)
2098                         switch (support) {
2099
2100                         case SLEEP_DISABLED:
2101                                 return sd_bus_error_setf(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
2102                                                          "Sleep verb '%s' is disabled by config",
2103                                                          sleep_operation_to_string(a->sleep_operation));
2104
2105                         case SLEEP_NOT_CONFIGURED:
2106                         case SLEEP_STATE_OR_MODE_NOT_SUPPORTED:
2107                         case SLEEP_ALARM_NOT_SUPPORTED:
2108                                 return sd_bus_error_setf(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
2109                                                          "Sleep verb '%s' is not configured or configuration is not supported by kernel",
2110                                                          sleep_operation_to_string(a->sleep_operation));
2111
2112                         case SLEEP_RESUME_NOT_SUPPORTED:
2113                                 return sd_bus_error_set(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
2114                                                         "Not running on EFI and resume= is not set. No available method to resume from hibernation");
2115
2116                         case SLEEP_NOT_ENOUGH_SWAP_SPACE:
2117                                 return sd_bus_error_set(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
2118                                                         "Not enough suitable swap space for hibernation available on compatible block devices and file systems");
2119
2120                         default:
2121                                 assert_not_reached();
2122
2123                         }
2124         } else if (!a)
2125                 assert_se(a = handle_action_lookup(action));
2126
2127         r = verify_shutdown_creds(m, message, a, flags, error);
2128         if (r != 0)
2129                 return r;
2130
2131         /* reset case we're shorting a scheduled shutdown */
2132         m->unlink_nologin = false;
2133         reset_scheduled_shutdown(m);
2134
2135         m->scheduled_shutdown_timeout = 0;
2136         m->scheduled_shutdown_action = action;
2137
2138         (void) setup_wall_message_timer(m, message);
2139
2140         r = bus_manager_shutdown_or_sleep_now_or_later(m, a, error);
2141         if (r < 0)
2142                 return r;
2143
2144         return sd_bus_reply_method_return(message, NULL);
2145 }
2146
2147 static int method_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2148         Manager *m = userdata;
2149
2150         return method_do_shutdown_or_sleep(
2151                         m, message,
2152                         HANDLE_POWEROFF,
2153                         sd_bus_message_is_method_call(message, NULL, "PowerOffWithFlags"),
2154                         error);
2155 }
2156
2157 static int method_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2158         Manager *m = userdata;
2159
2160         return method_do_shutdown_or_sleep(
2161                         m, message,
2162                         HANDLE_REBOOT,
2163                         sd_bus_message_is_method_call(message, NULL, "RebootWithFlags"),
2164                         error);
2165 }
2166
2167 static int method_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2168         Manager *m = userdata;
2169
2170         return method_do_shutdown_or_sleep(
2171                         m, message,
2172                         HANDLE_HALT,
2173                         sd_bus_message_is_method_call(message, NULL, "HaltWithFlags"),
2174                         error);
2175 }
2176
2177 static int method_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2178         Manager *m = userdata;
2179
2180         return method_do_shutdown_or_sleep(
2181                         m, message,
2182                         HANDLE_SUSPEND,
2183                         sd_bus_message_is_method_call(message, NULL, "SuspendWithFlags"),
2184                         error);
2185 }
2186
2187 static int method_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2188         Manager *m = userdata;
2189
2190         return method_do_shutdown_or_sleep(
2191                         m, message,
2192                         HANDLE_HIBERNATE,
2193                         sd_bus_message_is_method_call(message, NULL, "HibernateWithFlags"),
2194                         error);
2195 }
2196
2197 static int method_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2198         Manager *m = userdata;
2199
2200         return method_do_shutdown_or_sleep(
2201                         m, message,
2202                         HANDLE_HYBRID_SLEEP,
2203                         sd_bus_message_is_method_call(message, NULL, "HybridSleepWithFlags"),
2204                         error);
2205 }
2206
2207 static int method_suspend_then_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2208         Manager *m = userdata;
2209
2210         return method_do_shutdown_or_sleep(
2211                         m, message,
2212                         HANDLE_SUSPEND_THEN_HIBERNATE,
2213                         sd_bus_message_is_method_call(message, NULL, "SuspendThenHibernateWithFlags"),
2214                         error);
2215 }
2216
2217 static int method_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2218         Manager *m = userdata;
2219
2220         return method_do_shutdown_or_sleep(
2221                         m, message,
2222                         HANDLE_SLEEP,
2223                         /* with_flags = */ true,
2224                         error);
2225 }
2226
2227 static int nologin_timeout_handler(
2228                         sd_event_source *s,
2229                         uint64_t usec,
2230                         void *userdata) {
2231
2232         Manager *m = userdata;
2233
2234         log_info("Creating /run/nologin, blocking further logins...");
2235
2236         m->unlink_nologin =
2237                 create_shutdown_run_nologin_or_warn() >= 0;
2238
2239         return 0;
2240 }
2241
2242 static usec_t nologin_timeout_usec(usec_t elapse) {
2243         /* Issue /run/nologin five minutes before shutdown */
2244         return LESS_BY(elapse, 5 * USEC_PER_MINUTE);
2245 }
2246
2247 void manager_load_scheduled_shutdown(Manager *m) {
2248         _cleanup_fclose_ FILE *f = NULL;
2249         _cleanup_free_ char *usec = NULL,
2250                *warn_wall = NULL,
2251                *mode = NULL,
2252                *wall_message = NULL,
2253                *uid = NULL,
2254                *tty = NULL;
2255         int r;
2256
2257         assert(m);
2258
2259         r = parse_env_file(f, SHUTDOWN_SCHEDULE_FILE,
2260                         "USEC", &usec,
2261                         "WARN_WALL", &warn_wall,
2262                         "MODE", &mode,
2263                         "WALL_MESSAGE", &wall_message,
2264                         "UID", &uid,
2265                         "TTY", &tty);
2266
2267         /* reset will delete the file */
2268         reset_scheduled_shutdown(m);
2269
2270         if (r == -ENOENT)
2271                 return;
2272         if (r < 0)
2273                 return (void) log_debug_errno(r, "Failed to parse " SHUTDOWN_SCHEDULE_FILE ": %m");
2274
2275         HandleAction handle = handle_action_from_string(mode);
2276         if (handle < 0)
2277                 return (void) log_debug_errno(SYNTHETIC_ERRNO(EINVAL), "Failed to parse scheduled shutdown type: %s", mode);
2278
2279         if (!usec)
2280                 return (void) log_debug_errno(SYNTHETIC_ERRNO(EINVAL), "USEC is required");
2281         if (deserialize_usec(usec, &m->scheduled_shutdown_timeout) < 0)
2282                 return;
2283
2284         /* assign parsed type only after we know usec is also valid */
2285         m->scheduled_shutdown_action = handle;
2286
2287         if (warn_wall) {
2288                 r = parse_boolean(warn_wall);
2289                 if (r < 0)
2290                         log_debug_errno(r, "Failed to parse enabling wall messages");
2291                 else
2292                         m->enable_wall_messages = r;
2293         }
2294
2295         if (wall_message) {
2296                 _cleanup_free_ char *unescaped = NULL;
2297                 r = cunescape(wall_message, 0, &unescaped);
2298                 if (r < 0)
2299                         log_debug_errno(r, "Failed to parse wall message: %s", wall_message);
2300                 else
2301                         free_and_replace(m->wall_message, unescaped);
2302         }
2303
2304         if (uid) {
2305                 r = parse_uid(uid, &m->scheduled_shutdown_uid);
2306                 if (r < 0)
2307                         log_debug_errno(r, "Failed to parse wall uid: %s", uid);
2308         }
2309
2310         free_and_replace(m->scheduled_shutdown_tty, tty);
2311
2312         r = manager_setup_shutdown_timers(m);
2313         if (r < 0)
2314                 return reset_scheduled_shutdown(m);
2315
2316         (void) manager_setup_wall_message_timer(m);
2317         (void) update_schedule_file(m);
2318
2319         return;
2320 }
2321
2322 static int update_schedule_file(Manager *m) {
2323         _cleanup_(unlink_and_freep) char *temp_path = NULL;
2324         _cleanup_fclose_ FILE *f = NULL;
2325         int r;
2326
2327         assert(m);
2328         assert(handle_action_valid(m->scheduled_shutdown_action));
2329
2330         r = mkdir_parents_label(SHUTDOWN_SCHEDULE_FILE, 0755);
2331         if (r < 0)
2332                 return log_error_errno(r, "Failed to create shutdown subdirectory: %m");
2333
2334         r = fopen_temporary(SHUTDOWN_SCHEDULE_FILE, &f, &temp_path);
2335         if (r < 0)
2336                 return log_error_errno(r, "Failed to save information about scheduled shutdowns: %m");
2337
2338         (void) fchmod(fileno(f), 0644);
2339
2340         serialize_usec(f, "USEC", m->scheduled_shutdown_timeout);
2341         serialize_item_format(f, "WARN_WALL", "%s", one_zero(m->enable_wall_messages));
2342         serialize_item_format(f, "MODE", "%s", handle_action_to_string(m->scheduled_shutdown_action));
2343         serialize_item_format(f, "UID", UID_FMT, m->scheduled_shutdown_uid);
2344
2345         if (m->scheduled_shutdown_tty)
2346                 serialize_item_format(f, "TTY", "%s", m->scheduled_shutdown_tty);
2347
2348         if (!isempty(m->wall_message)) {
2349                 r = serialize_item_escaped(f, "WALL_MESSAGE", m->wall_message);
2350                 if (r < 0)
2351                         goto fail;
2352         }
2353
2354         r = fflush_and_check(f);
2355         if (r < 0)
2356                 goto fail;
2357
2358         if (rename(temp_path, SHUTDOWN_SCHEDULE_FILE) < 0) {
2359                 r = -errno;
2360                 goto fail;
2361         }
2362
2363         temp_path = mfree(temp_path);
2364         return 0;
2365
2366 fail:
2367         (void) unlink(SHUTDOWN_SCHEDULE_FILE);
2368
2369         return log_error_errno(r, "Failed to write information about scheduled shutdowns: %m");
2370 }
2371
2372 static void reset_scheduled_shutdown(Manager *m) {
2373         assert(m);
2374
2375         m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2376         m->wall_message_timeout_source = sd_event_source_unref(m->wall_message_timeout_source);
2377         m->nologin_timeout_source = sd_event_source_unref(m->nologin_timeout_source);
2378
2379         m->scheduled_shutdown_action = _HANDLE_ACTION_INVALID;
2380         m->scheduled_shutdown_timeout = USEC_INFINITY;
2381         m->scheduled_shutdown_uid = UID_INVALID;
2382         m->scheduled_shutdown_tty = mfree(m->scheduled_shutdown_tty);
2383         m->shutdown_dry_run = false;
2384
2385         if (m->unlink_nologin) {
2386                 (void) unlink_or_warn("/run/nologin");
2387                 m->unlink_nologin = false;
2388         }
2389
2390         (void) unlink(SHUTDOWN_SCHEDULE_FILE);
2391 }
2392
2393 static int manager_scheduled_shutdown_handler(
2394                         sd_event_source *s,
2395                         uint64_t usec,
2396                         void *userdata) {
2397
2398         Manager *m = ASSERT_PTR(userdata);
2399         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
2400         const HandleActionData *a;
2401         int r;
2402
2403         assert_se(a = handle_action_lookup(m->scheduled_shutdown_action));
2404
2405         /* Don't allow multiple jobs being executed at the same time */
2406         if (m->delayed_action) {
2407                 r = log_error_errno(SYNTHETIC_ERRNO(EALREADY),
2408                                     "Scheduled shutdown to %s failed: shutdown or sleep operation already in progress.",
2409                                     a->target);
2410                 goto error;
2411         }
2412
2413         if (m->shutdown_dry_run) {
2414                 /* We do not process delay inhibitors here.  Otherwise, we
2415                  * would have to be considered "in progress" (like the check
2416                  * above) for some seconds after our admin has seen the final
2417                  * wall message. */
2418
2419                 bus_manager_log_shutdown(m, a);
2420                 log_info("Running in dry run, suppressing action.");
2421                 reset_scheduled_shutdown(m);
2422
2423                 return 0;
2424         }
2425
2426         r = bus_manager_shutdown_or_sleep_now_or_later(m, a, &error);
2427         if (r < 0) {
2428                 log_error_errno(r, "Scheduled shutdown to %s failed: %m", a->target);
2429                 goto error;
2430         }
2431
2432         return 0;
2433
2434 error:
2435         reset_scheduled_shutdown(m);
2436         return r;
2437 }
2438
2439 static int method_schedule_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2440         Manager *m = ASSERT_PTR(userdata);
2441         HandleAction handle;
2442         const HandleActionData *a;
2443         uint64_t elapse;
2444         char *type;
2445         int r;
2446         bool dry_run = false;
2447
2448         assert(message);
2449
2450         r = sd_bus_message_read(message, "st", &type, &elapse);
2451         if (r < 0)
2452                 return r;
2453
2454         if (startswith(type, "dry-")) {
2455                 type += 4;
2456                 dry_run = true;
2457         }
2458
2459         handle = handle_action_from_string(type);
2460         if (!HANDLE_ACTION_IS_SHUTDOWN(handle))
2461                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unsupported shutdown type: %s", type);
2462
2463         assert_se(a = handle_action_lookup(handle));
2464         assert(a->polkit_action);
2465
2466         r = verify_shutdown_creds(m, message, a, 0, error);
2467         if (r != 0)
2468                 return r;
2469
2470         m->scheduled_shutdown_action = handle;
2471         m->shutdown_dry_run = dry_run;
2472         m->scheduled_shutdown_timeout = elapse;
2473
2474         r = manager_setup_shutdown_timers(m);
2475         if (r < 0)
2476                 return r;
2477
2478         r = setup_wall_message_timer(m, message);
2479         if (r >= 0)
2480                 r = update_schedule_file(m);
2481
2482         if (r < 0) {
2483                 reset_scheduled_shutdown(m);
2484                 return r;
2485         }
2486
2487         return sd_bus_reply_method_return(message, NULL);
2488 }
2489
2490 static int manager_setup_shutdown_timers(Manager* m) {
2491         int r;
2492
2493         r = event_reset_time(m->event, &m->scheduled_shutdown_timeout_source,
2494                              CLOCK_REALTIME,
2495                              m->scheduled_shutdown_timeout, 0,
2496                              manager_scheduled_shutdown_handler, m,
2497                              0, "scheduled-shutdown-timeout", true);
2498         if (r < 0)
2499                 goto fail;
2500
2501         r = event_reset_time(m->event, &m->nologin_timeout_source,
2502                              CLOCK_REALTIME,
2503                              nologin_timeout_usec(m->scheduled_shutdown_timeout), 0,
2504                              nologin_timeout_handler, m,
2505                              0, "nologin-timeout", true);
2506         if (r < 0)
2507                 goto fail;
2508
2509         return 0;
2510
2511 fail:
2512         m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2513         m->nologin_timeout_source = sd_event_source_unref(m->nologin_timeout_source);
2514
2515         return r;
2516 }
2517
2518 static int method_cancel_scheduled_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2519         Manager *m = ASSERT_PTR(userdata);
2520         const HandleActionData *a;
2521         bool cancelled;
2522         int r;
2523
2524         assert(message);
2525
2526         cancelled = handle_action_valid(m->scheduled_shutdown_action) && m->scheduled_shutdown_action != HANDLE_IGNORE;
2527         if (!cancelled)
2528                 return sd_bus_reply_method_return(message, "b", false);
2529
2530         assert_se(a = handle_action_lookup(m->scheduled_shutdown_action));
2531         if (!a->polkit_action)
2532                 return sd_bus_error_set(error, SD_BUS_ERROR_AUTH_FAILED, "Unsupported shutdown type");
2533
2534         r = bus_verify_polkit_async(
2535                         message,
2536                         a->polkit_action,
2537                         /* details= */ NULL,
2538                         &m->polkit_registry,
2539                         error);
2540         if (r < 0)
2541                 return r;
2542         if (r == 0)
2543                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2544
2545         if (m->enable_wall_messages) {
2546                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2547                 const char *tty = NULL;
2548                 uid_t uid = 0;
2549
2550                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
2551                 if (r >= 0) {
2552                         (void) sd_bus_creds_get_uid(creds, &uid);
2553                         (void) sd_bus_creds_get_tty(creds, &tty);
2554                 }
2555
2556                 _cleanup_free_ char *username = uid_to_name(uid);
2557
2558                 log_struct(LOG_INFO,
2559                            LOG_MESSAGE("System shutdown has been cancelled"),
2560                            "ACTION=%s", handle_action_to_string(a->handle),
2561                            "MESSAGE_ID=" SD_MESSAGE_SHUTDOWN_CANCELED_STR,
2562                            username ? "OPERATOR=%s" : NULL, username);
2563
2564                 (void) wall("System shutdown has been cancelled",
2565                             username, tty, logind_wall_tty_filter, m);
2566         }
2567
2568         reset_scheduled_shutdown(m);
2569
2570         return sd_bus_reply_method_return(message, "b", true);
2571 }
2572
2573 static int method_can_shutdown_or_sleep(
2574                 Manager *m,
2575                 sd_bus_message *message,
2576                 HandleAction action,
2577                 sd_bus_error *error) {
2578
2579         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2580         bool multiple_sessions, challenge, blocked;
2581         const HandleActionData *a;
2582         const char *result = NULL;
2583         uid_t uid;
2584         int r;
2585
2586         assert(m);
2587         assert(message);
2588         assert(HANDLE_ACTION_IS_SHUTDOWN(action) || HANDLE_ACTION_IS_SLEEP(action));
2589
2590         if (action == HANDLE_SLEEP) {
2591                 HandleAction selected;
2592
2593                 selected = handle_action_sleep_select(m->handle_action_sleep_mask);
2594                 if (selected < 0)
2595                         return sd_bus_reply_method_return(message, "s", "na");
2596
2597                 assert_se(a = handle_action_lookup(selected));
2598
2599         } else if (HANDLE_ACTION_IS_SLEEP(action)) {
2600                 SleepSupport support;
2601
2602                 assert_se(a = handle_action_lookup(action));
2603
2604                 assert(a->sleep_operation >= 0);
2605                 assert(a->sleep_operation < _SLEEP_OPERATION_MAX);
2606
2607                 r = sleep_supported_full(a->sleep_operation, &support);
2608                 if (r < 0)
2609                         return r;
2610                 if (r == 0)
2611                         return sd_bus_reply_method_return(message, "s", support == SLEEP_DISABLED ? "no" : "na");
2612         } else
2613                 assert_se(a = handle_action_lookup(action));
2614
2615         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
2616         if (r < 0)
2617                 return r;
2618
2619         r = sd_bus_creds_get_euid(creds, &uid);
2620         if (r < 0)
2621                 return r;
2622
2623         r = have_multiple_sessions(m, uid);
2624         if (r < 0)
2625                 return r;
2626
2627         multiple_sessions = r > 0;
2628         blocked = manager_is_inhibited(m, a->inhibit_what, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
2629
2630         if (a->target) {
2631                 _cleanup_free_ char *load_state = NULL;
2632
2633                 r = unit_load_state(m->bus, a->target, &load_state);
2634                 if (r < 0)
2635                         return r;
2636
2637                 if (!streq(load_state, "loaded")) {
2638                         result = "no";
2639                         goto finish;
2640                 }
2641         }
2642
2643         if (multiple_sessions) {
2644                 r = bus_test_polkit(
2645                                 message,
2646                                 a->polkit_action_multiple_sessions,
2647                                 /* details= */ NULL,
2648                                 /* good_user= */ UID_INVALID,
2649                                 &challenge,
2650                                 error);
2651                 if (r < 0)
2652                         return r;
2653
2654                 if (r > 0)
2655                         result = "yes";
2656                 else if (challenge)
2657                         result = "challenge";
2658                 else
2659                         result = "no";
2660         }
2661
2662         if (blocked) {
2663                 r = bus_test_polkit(
2664                                 message,
2665                                 a->polkit_action_ignore_inhibit,
2666                                 /* details= */ NULL,
2667                                 /* good_user= */ UID_INVALID,
2668                                 &challenge,
2669                                 error);
2670                 if (r < 0)
2671                         return r;
2672
2673                 if (r > 0) {
2674                         if (!result)
2675                                 result = "yes";
2676                 } else if (challenge) {
2677                         if (!result || streq(result, "yes"))
2678                                 result = "challenge";
2679                 } else
2680                         result = "no";
2681         }
2682
2683         if (!multiple_sessions && !blocked) {
2684                 /* If neither inhibit nor multiple sessions
2685                  * apply then just check the normal policy */
2686
2687                 r = bus_test_polkit(
2688                                 message,
2689                                 a->polkit_action,
2690                                 /* details= */ NULL,
2691                                 /* good_user= */ UID_INVALID,
2692                                 &challenge,
2693                                 error);
2694                 if (r < 0)
2695                         return r;
2696
2697                 if (r > 0)
2698                         result = "yes";
2699                 else if (challenge)
2700                         result = "challenge";
2701                 else
2702                         result = "no";
2703         }
2704
2705  finish:
2706         return sd_bus_reply_method_return(message, "s", result);
2707 }
2708
2709 static int method_can_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2710         Manager *m = userdata;
2711
2712         return method_can_shutdown_or_sleep(m, message, HANDLE_POWEROFF, error);
2713 }
2714
2715 static int method_can_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2716         Manager *m = userdata;
2717
2718         return method_can_shutdown_or_sleep(m, message, HANDLE_REBOOT, error);
2719 }
2720
2721 static int method_can_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2722         Manager *m = userdata;
2723
2724         return method_can_shutdown_or_sleep(m, message, HANDLE_HALT, error);
2725 }
2726
2727 static int method_can_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2728         Manager *m = userdata;
2729
2730         return method_can_shutdown_or_sleep(m, message, HANDLE_SUSPEND, error);
2731 }
2732
2733 static int method_can_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2734         Manager *m = userdata;
2735
2736         return method_can_shutdown_or_sleep(m, message, HANDLE_HIBERNATE, error);
2737 }
2738
2739 static int method_can_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2740         Manager *m = userdata;
2741
2742         return method_can_shutdown_or_sleep(m, message, HANDLE_HYBRID_SLEEP, error);
2743 }
2744
2745 static int method_can_suspend_then_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2746         Manager *m = userdata;
2747
2748         return method_can_shutdown_or_sleep(m, message, HANDLE_SUSPEND_THEN_HIBERNATE, error);
2749 }
2750
2751 static int method_can_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2752         Manager *m = userdata;
2753
2754         return method_can_shutdown_or_sleep(m, message, HANDLE_SLEEP, error);
2755 }
2756
2757 static int property_get_reboot_parameter(
2758                 sd_bus *bus,
2759                 const char *path,
2760                 const char *interface,
2761                 const char *property,
2762                 sd_bus_message *reply,
2763                 void *userdata,
2764                 sd_bus_error *error) {
2765         _cleanup_free_ char *parameter = NULL;
2766         int r;
2767
2768         assert(bus);
2769         assert(reply);
2770         assert(userdata);
2771
2772         r = read_reboot_parameter(&parameter);
2773         if (r < 0)
2774                 return r;
2775
2776         return sd_bus_message_append(reply, "s", parameter);
2777 }
2778
2779 static int method_set_reboot_parameter(
2780                 sd_bus_message *message,
2781                 void *userdata,
2782                 sd_bus_error *error) {
2783
2784         Manager *m = ASSERT_PTR(userdata);
2785         const char *arg;
2786         int r;
2787
2788         assert(message);
2789
2790         r = sd_bus_message_read(message, "s", &arg);
2791         if (r < 0)
2792                 return r;
2793
2794         r = detect_container();
2795         if (r < 0)
2796                 return r;
2797         if (r > 0)
2798                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED,
2799                                          "Reboot parameter not supported in containers, refusing.");
2800
2801         r = bus_verify_polkit_async(
2802                         message,
2803                         "org.freedesktop.login1.set-reboot-parameter",
2804                         /* details= */ NULL,
2805                         &m->polkit_registry,
2806                         error);
2807         if (r < 0)
2808                 return r;
2809         if (r == 0)
2810                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2811
2812         r = update_reboot_parameter_and_warn(arg, false);
2813         if (r < 0)
2814                 return r;
2815
2816         return sd_bus_reply_method_return(message, NULL);
2817 }
2818
2819 static int method_can_reboot_parameter(
2820                 sd_bus_message *message,
2821                 void *userdata,
2822                 sd_bus_error *error) {
2823
2824         _unused_ Manager *m = ASSERT_PTR(userdata);
2825         int r;
2826
2827         assert(message);
2828
2829         r = detect_container();
2830         if (r < 0)
2831                 return r;
2832         if (r > 0) /* Inside containers, specifying a reboot parameter, doesn't make much sense */
2833                 return sd_bus_reply_method_return(message, "s", "na");
2834
2835         return return_test_polkit(
2836                         message,
2837                         "org.freedesktop.login1.set-reboot-parameter",
2838                         /* details= */ NULL,
2839                         /* good_user= */ UID_INVALID,
2840                         error);
2841 }
2842
2843 static int property_get_reboot_to_firmware_setup(
2844                 sd_bus *bus,
2845                 const char *path,
2846                 const char *interface,
2847                 const char *property,
2848                 sd_bus_message *reply,
2849                 void *userdata,
2850                 sd_bus_error *error) {
2851         int r;
2852
2853         assert(bus);
2854         assert(reply);
2855         assert(userdata);
2856
2857         r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
2858         if (r == -ENXIO) {
2859                 /* EFI case: let's see what is currently configured in the EFI variables */
2860                 r = efi_get_reboot_to_firmware();
2861                 if (r < 0 && r != -EOPNOTSUPP)
2862                         log_warning_errno(r, "Failed to determine reboot-to-firmware-setup state: %m");
2863         } else if (r < 0)
2864                 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
2865         else if (r > 0) {
2866                 /* Non-EFI case: let's see whether /run/systemd/reboot-to-firmware-setup exists. */
2867                 if (access("/run/systemd/reboot-to-firmware-setup", F_OK) < 0) {
2868                         if (errno != ENOENT)
2869                                 log_warning_errno(errno, "Failed to check whether /run/systemd/reboot-to-firmware-setup exists: %m");
2870
2871                         r = false;
2872                 } else
2873                         r = true;
2874         }
2875
2876         return sd_bus_message_append(reply, "b", r > 0);
2877 }
2878
2879 static int method_set_reboot_to_firmware_setup(
2880                 sd_bus_message *message,
2881                 void *userdata,
2882                 sd_bus_error *error) {
2883
2884         Manager *m = ASSERT_PTR(userdata);
2885         bool use_efi;
2886         int b, r;
2887
2888         assert(message);
2889
2890         r = sd_bus_message_read(message, "b", &b);
2891         if (r < 0)
2892                 return r;
2893
2894         r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
2895         if (r == -ENXIO) {
2896                 /* EFI case: let's see what the firmware supports */
2897
2898                 r = efi_reboot_to_firmware_supported();
2899                 if (r == -EOPNOTSUPP)
2900                         return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Firmware does not support boot into firmware.");
2901                 if (r < 0)
2902                         return r;
2903
2904                 use_efi = true;
2905
2906         } else if (r <= 0) {
2907                 /* non-EFI case: $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP is set to off */
2908
2909                 if (r < 0)
2910                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
2911
2912                 return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Firmware does not support boot into firmware.");
2913         } else
2914                 /* non-EFI case: $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP is set to on */
2915                 use_efi = false;
2916
2917         r = bus_verify_polkit_async(
2918                         message,
2919                         "org.freedesktop.login1.set-reboot-to-firmware-setup",
2920                         /* details= */ NULL,
2921                         &m->polkit_registry,
2922                         error);
2923         if (r < 0)
2924                 return r;
2925         if (r == 0)
2926                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2927
2928         if (use_efi) {
2929                 r = efi_set_reboot_to_firmware(b);
2930                 if (r < 0)
2931                         return r;
2932         } else {
2933                 if (b) {
2934                         r = touch("/run/systemd/reboot-to-firmware-setup");
2935                         if (r < 0)
2936                                 return r;
2937                 } else {
2938                         if (unlink("/run/systemd/reboot-to-firmware-setup") < 0 && errno != ENOENT)
2939                                 return -errno;
2940                 }
2941         }
2942
2943         return sd_bus_reply_method_return(message, NULL);
2944 }
2945
2946 static int method_can_reboot_to_firmware_setup(
2947                 sd_bus_message *message,
2948                 void *userdata,
2949                 sd_bus_error *error) {
2950
2951         _unused_ Manager *m = ASSERT_PTR(userdata);
2952         int r;
2953
2954         assert(message);
2955
2956         r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
2957         if (r == -ENXIO) {
2958                 /* EFI case: let's see what the firmware supports */
2959
2960                 r = efi_reboot_to_firmware_supported();
2961                 if (r < 0) {
2962                         if (r != -EOPNOTSUPP)
2963                                 log_warning_errno(r, "Failed to determine whether reboot to firmware is supported: %m");
2964
2965                         return sd_bus_reply_method_return(message, "s", "na");
2966                 }
2967
2968         } else if (r <= 0) {
2969                 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP */
2970
2971                 if (r < 0)
2972                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
2973
2974                 return sd_bus_reply_method_return(message, "s", "na");
2975         }
2976
2977         return return_test_polkit(
2978                         message,
2979                         "org.freedesktop.login1.set-reboot-to-firmware-setup",
2980                         /* details= */ NULL,
2981                         /* good_user= */ UID_INVALID,
2982                         error);
2983 }
2984
2985 static int property_get_reboot_to_boot_loader_menu(
2986                 sd_bus *bus,
2987                 const char *path,
2988                 const char *interface,
2989                 const char *property,
2990                 sd_bus_message *reply,
2991                 void *userdata,
2992                 sd_bus_error *error) {
2993
2994         uint64_t x = UINT64_MAX;
2995         int r;
2996
2997         assert(bus);
2998         assert(reply);
2999         assert(userdata);
3000
3001         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
3002         if (r == -ENXIO) {
3003                 /* EFI case: returns the current value of LoaderConfigTimeoutOneShot. Three cases are distinguished:
3004                  *
3005                  *     1. Variable not set, boot into boot loader menu is not enabled (we return UINT64_MAX to the user)
3006                  *     2. Variable set to "0", boot into boot loader menu is enabled with no timeout (we return 0 to the user)
3007                  *     3. Variable set to numeric value formatted in ASCII, boot into boot loader menu with the specified timeout in seconds
3008                  */
3009
3010                 r = efi_loader_get_config_timeout_one_shot(&x);
3011                 if (r < 0) {
3012                         if (r != -ENOENT)
3013                                 log_warning_errno(r, "Failed to read LoaderConfigTimeoutOneShot variable, ignoring: %m");
3014                 }
3015
3016         } else if (r < 0)
3017                 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
3018         else if (r > 0) {
3019                 _cleanup_free_ char *v = NULL;
3020
3021                 /* Non-EFI case, let's process /run/systemd/reboot-to-boot-loader-menu. */
3022
3023                 r = read_one_line_file("/run/systemd/reboot-to-boot-loader-menu", &v);
3024                 if (r < 0) {
3025                         if (r != -ENOENT)
3026                                 log_warning_errno(r, "Failed to read /run/systemd/reboot-to-boot-loader-menu: %m");
3027                 } else {
3028                         r = safe_atou64(v, &x);
3029                         if (r < 0)
3030                                 log_warning_errno(r, "Failed to parse /run/systemd/reboot-to-boot-loader-menu: %m");
3031                 }
3032         }
3033
3034         return sd_bus_message_append(reply, "t", x);
3035 }
3036
3037 static int method_set_reboot_to_boot_loader_menu(
3038                 sd_bus_message *message,
3039                 void *userdata,
3040                 sd_bus_error *error) {
3041
3042         Manager *m = ASSERT_PTR(userdata);
3043         bool use_efi;
3044         uint64_t x;
3045         int r;
3046
3047         assert(message);
3048
3049         r = sd_bus_message_read(message, "t", &x);
3050         if (r < 0)
3051                 return r;
3052
3053         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
3054         if (r == -ENXIO) {
3055                 uint64_t features;
3056
3057                 /* EFI case: let's see if booting into boot loader menu is supported. */
3058
3059                 r = efi_loader_get_features(&features);
3060                 if (r < 0)
3061                         log_warning_errno(r, "Failed to determine whether reboot to boot loader menu is supported: %m");
3062                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT))
3063                         return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader does not support boot into boot loader menu.");
3064
3065                 use_efi = true;
3066
3067         } else if (r <= 0) {
3068                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU is set to off */
3069
3070                 if (r < 0)
3071                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
3072
3073                 return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader does not support boot into boot loader menu.");
3074         } else
3075                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU is set to on */
3076                 use_efi = false;
3077
3078         r = bus_verify_polkit_async(
3079                         message,
3080                         "org.freedesktop.login1.set-reboot-to-boot-loader-menu",
3081                         /* details= */ NULL,
3082                         &m->polkit_registry,
3083                         error);
3084         if (r < 0)
3085                 return r;
3086         if (r == 0)
3087                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
3088
3089         if (use_efi) {
3090                 if (x == UINT64_MAX)
3091                         r = efi_set_variable(EFI_LOADER_VARIABLE(LoaderConfigTimeoutOneShot), NULL, 0);
3092                 else {
3093                         char buf[DECIMAL_STR_MAX(uint64_t) + 1];
3094                         xsprintf(buf, "%" PRIu64, DIV_ROUND_UP(x, USEC_PER_SEC)); /* second granularity */
3095
3096                         r = efi_set_variable_string(EFI_LOADER_VARIABLE(LoaderConfigTimeoutOneShot), buf);
3097                 }
3098                 if (r < 0)
3099                         return r;
3100         } else {
3101                 if (x == UINT64_MAX) {
3102                         if (unlink("/run/systemd/reboot-to-boot-loader-menu") < 0 && errno != ENOENT)
3103                                 return -errno;
3104                 } else {
3105                         char buf[DECIMAL_STR_MAX(uint64_t) + 1];
3106
3107                         xsprintf(buf, "%" PRIu64, x); /* μs granularity */
3108
3109                         r = write_string_file_atomic_label("/run/systemd/reboot-to-boot-loader-menu", buf);
3110                         if (r < 0)
3111                                 return r;
3112                 }
3113         }
3114
3115         return sd_bus_reply_method_return(message, NULL);
3116 }
3117
3118 static int method_can_reboot_to_boot_loader_menu(
3119                 sd_bus_message *message,
3120                 void *userdata,
3121                 sd_bus_error *error) {
3122
3123         _unused_ Manager *m = ASSERT_PTR(userdata);
3124         int r;
3125
3126         assert(message);
3127
3128         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
3129         if (r == -ENXIO) {
3130                 uint64_t features = 0;
3131
3132                 /* EFI case, let's see if booting into boot loader menu is supported. */
3133
3134                 r = efi_loader_get_features(&features);
3135                 if (r < 0)
3136                         log_warning_errno(r, "Failed to determine whether reboot to boot loader menu is supported: %m");
3137                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT))
3138                         return sd_bus_reply_method_return(message, "s", "na");
3139
3140         } else if (r <= 0) {
3141                 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU */
3142
3143                 if (r < 0)
3144                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
3145
3146                 return sd_bus_reply_method_return(message, "s", "na");
3147         }
3148
3149         return return_test_polkit(
3150                         message,
3151                         "org.freedesktop.login1.set-reboot-to-boot-loader-menu",
3152                         /* details= */ NULL,
3153                         /* good_user= */ UID_INVALID,
3154                         error);
3155 }
3156
3157 static int property_get_reboot_to_boot_loader_entry(
3158                 sd_bus *bus,
3159                 const char *path,
3160                 const char *interface,
3161                 const char *property,
3162                 sd_bus_message *reply,
3163                 void *userdata,
3164                 sd_bus_error *error) {
3165
3166         _cleanup_free_ char *v = NULL;
3167         Manager *m = ASSERT_PTR(userdata);
3168         const char *x = NULL;
3169         int r;
3170
3171         assert(bus);
3172         assert(reply);
3173
3174         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
3175         if (r == -ENXIO) {
3176                 /* EFI case: let's read the LoaderEntryOneShot variable */
3177
3178                 r = efi_loader_update_entry_one_shot_cache(&m->efi_loader_entry_one_shot, &m->efi_loader_entry_one_shot_stat);
3179                 if (r < 0) {
3180                         if (r != -ENOENT)
3181                                 log_warning_errno(r, "Failed to read LoaderEntryOneShot variable, ignoring: %m");
3182                 } else
3183                         x = m->efi_loader_entry_one_shot;
3184
3185         } else if (r < 0)
3186                 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
3187         else if (r > 0) {
3188
3189                 /* Non-EFI case, let's process /run/systemd/reboot-to-boot-loader-entry. */
3190
3191                 r = read_one_line_file("/run/systemd/reboot-to-boot-loader-entry", &v);
3192                 if (r < 0) {
3193                         if (r != -ENOENT)
3194                                 log_warning_errno(r, "Failed to read /run/systemd/reboot-to-boot-loader-entry, ignoring: %m");
3195                 } else if (!efi_loader_entry_name_valid(v))
3196                         log_warning("/run/systemd/reboot-to-boot-loader-entry is not valid, ignoring.");
3197                 else
3198                         x = v;
3199         }
3200
3201         return sd_bus_message_append(reply, "s", x);
3202 }
3203
3204 static int boot_loader_entry_exists(Manager *m, const char *id) {
3205         _cleanup_(boot_config_free) BootConfig config = BOOT_CONFIG_NULL;
3206         int r;
3207
3208         assert(m);
3209         assert(id);
3210
3211         r = boot_config_load_auto(&config, NULL, NULL);
3212         if (r < 0 && r != -ENOKEY) /* don't complain if no GPT is found, hence skip ENOKEY */
3213                 return r;
3214
3215         r = manager_read_efi_boot_loader_entries(m);
3216         if (r >= 0)
3217                 (void) boot_config_augment_from_loader(&config, m->efi_boot_loader_entries, /* auto_only= */ true);
3218
3219         return !!boot_config_find_entry(&config, id);
3220 }
3221
3222 static int method_set_reboot_to_boot_loader_entry(
3223                 sd_bus_message *message,
3224                 void *userdata,
3225                 sd_bus_error *error) {
3226
3227         Manager *m = ASSERT_PTR(userdata);
3228         bool use_efi;
3229         const char *v;
3230         int r;
3231
3232         assert(message);
3233
3234         r = sd_bus_message_read(message, "s", &v);
3235         if (r < 0)
3236                 return r;
3237
3238         if (isempty(v))
3239                 v = NULL;
3240         else if (efi_loader_entry_name_valid(v)) {
3241                 r = boot_loader_entry_exists(m, v);
3242                 if (r < 0)
3243                         return r;
3244                 if (r == 0)
3245                         return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader entry '%s' is not known.", v);
3246         } else
3247                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Boot loader entry name '%s' is not valid, refusing.", v);
3248
3249         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
3250         if (r == -ENXIO) {
3251                 uint64_t features;
3252
3253                 /* EFI case: let's see if booting into boot loader entry is supported. */
3254
3255                 r = efi_loader_get_features(&features);
3256                 if (r < 0)
3257                         log_warning_errno(r, "Failed to determine whether reboot into boot loader entry is supported: %m");
3258                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_ENTRY_ONESHOT))
3259                         return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Loader does not support boot into boot loader entry.");
3260
3261                 use_efi = true;
3262
3263         } else if (r <= 0) {
3264                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY is set to off */
3265
3266                 if (r < 0)
3267                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
3268
3269                 return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Loader does not support boot into boot loader entry.");
3270         } else
3271                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY is set to on */
3272                 use_efi = false;
3273
3274         r = bus_verify_polkit_async(
3275                         message,
3276                         "org.freedesktop.login1.set-reboot-to-boot-loader-entry",
3277                         /* details= */ NULL,
3278                         &m->polkit_registry,
3279                         error);
3280         if (r < 0)
3281                 return r;
3282         if (r == 0)
3283                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
3284
3285         if (use_efi) {
3286                 if (isempty(v))
3287                         /* Delete item */
3288                         r = efi_set_variable(EFI_LOADER_VARIABLE(LoaderEntryOneShot), NULL, 0);
3289                 else
3290                         r = efi_set_variable_string(EFI_LOADER_VARIABLE(LoaderEntryOneShot), v);
3291                 if (r < 0)
3292                         return r;
3293         } else {
3294                 if (isempty(v)) {
3295                         if (unlink("/run/systemd/reboot-to-boot-loader-entry") < 0 && errno != ENOENT)
3296                                 return -errno;
3297                 } else {
3298                         r = write_string_file_atomic_label("/run/systemd/reboot-boot-to-loader-entry", v);
3299                         if (r < 0)
3300                                 return r;
3301                 }
3302         }
3303
3304         return sd_bus_reply_method_return(message, NULL);
3305 }
3306
3307 static int method_can_reboot_to_boot_loader_entry(
3308                 sd_bus_message *message,
3309                 void *userdata,
3310                 sd_bus_error *error) {
3311
3312         _unused_ Manager *m = ASSERT_PTR(userdata);
3313         int r;
3314
3315         assert(message);
3316
3317         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
3318         if (r == -ENXIO) {
3319                 uint64_t features = 0;
3320
3321                 /* EFI case, let's see if booting into boot loader entry is supported. */
3322
3323                 r = efi_loader_get_features(&features);
3324                 if (r < 0)
3325                         log_warning_errno(r, "Failed to determine whether reboot to boot loader entry is supported: %m");
3326                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_ENTRY_ONESHOT))
3327                         return sd_bus_reply_method_return(message, "s", "na");
3328
3329         } else if (r <= 0) {
3330                 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY */
3331
3332                 if (r < 0)
3333                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
3334
3335                 return sd_bus_reply_method_return(message, "s", "na");
3336         }
3337
3338         return return_test_polkit(
3339                         message,
3340                         "org.freedesktop.login1.set-reboot-to-boot-loader-entry",
3341                         /* details= */ NULL,
3342                         /* good_user= */ UID_INVALID,
3343                         error);
3344 }
3345
3346 static int property_get_boot_loader_entries(
3347                 sd_bus *bus,
3348                 const char *path,
3349                 const char *interface,
3350                 const char *property,
3351                 sd_bus_message *reply,
3352                 void *userdata,
3353                 sd_bus_error *error) {
3354
3355         _cleanup_(boot_config_free) BootConfig config = BOOT_CONFIG_NULL;
3356         Manager *m = ASSERT_PTR(userdata);
3357         size_t i;
3358         int r;
3359
3360         assert(bus);
3361         assert(reply);
3362
3363         r = boot_config_load_auto(&config, NULL, NULL);
3364         if (r < 0 && r != -ENOKEY) /* don't complain if there's no GPT found */
3365                 return r;
3366
3367         r = manager_read_efi_boot_loader_entries(m);
3368         if (r >= 0)
3369                 (void) boot_config_augment_from_loader(&config, m->efi_boot_loader_entries, /* auto_only= */ true);
3370
3371         r = sd_bus_message_open_container(reply, 'a', "s");
3372         if (r < 0)
3373                 return r;
3374
3375         for (i = 0; i < config.n_entries; i++) {
3376                 BootEntry *e = config.entries + i;
3377
3378                 r = sd_bus_message_append(reply, "s", e->id);
3379                 if (r < 0)
3380                         return r;
3381         }
3382
3383         return sd_bus_message_close_container(reply);
3384 }
3385
3386 static int method_set_wall_message(
3387                 sd_bus_message *message,
3388                 void *userdata,
3389                 sd_bus_error *error) {
3390
3391         int r;
3392         Manager *m = ASSERT_PTR(userdata);
3393         char *wall_message;
3394         int enable_wall_messages;
3395
3396         assert(message);
3397
3398         r = sd_bus_message_read(message, "sb", &wall_message, &enable_wall_messages);
3399         if (r < 0)
3400                 return r;
3401
3402         if (strlen(wall_message) > WALL_MESSAGE_MAX)
3403                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3404                         "Wall message too long, maximum permitted length is %u characters.",
3405                         WALL_MESSAGE_MAX);
3406
3407         /* Short-circuit the operation if the desired state is already in place, to
3408          * avoid an unnecessary polkit permission check. */
3409         if (streq_ptr(m->wall_message, empty_to_null(wall_message)) &&
3410             m->enable_wall_messages == enable_wall_messages)
3411                 goto done;
3412
3413         r = bus_verify_polkit_async(
3414                         message,
3415                         "org.freedesktop.login1.set-wall-message",
3416                         /* details= */ NULL,
3417                         &m->polkit_registry,
3418                         error);
3419         if (r < 0)
3420                 return r;
3421         if (r == 0)
3422                 return 1; /* Will call us back */
3423
3424         r = free_and_strdup(&m->wall_message, empty_to_null(wall_message));
3425         if (r < 0)
3426                 return log_oom();
3427
3428         m->enable_wall_messages = enable_wall_messages;
3429
3430  done:
3431         return sd_bus_reply_method_return(message, NULL);
3432 }
3433
3434 static int method_inhibit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3435         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
3436         _cleanup_(pidref_done) PidRef pidref = PIDREF_NULL;
3437         const char *who, *why, *what, *mode;
3438         _cleanup_free_ char *id = NULL;
3439         _cleanup_close_ int fifo_fd = -EBADF;
3440         Manager *m = ASSERT_PTR(userdata);
3441         InhibitMode mm;
3442         InhibitWhat w;
3443         pid_t pid;
3444         uid_t uid;
3445         int r;
3446
3447         assert(message);
3448
3449         r = sd_bus_message_read(message, "ssss", &what, &who, &why, &mode);
3450         if (r < 0)
3451                 return r;
3452
3453         w = inhibit_what_from_string(what);
3454         if (w <= 0)
3455                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3456                                          "Invalid what specification %s", what);
3457
3458         mm = inhibit_mode_from_string(mode);
3459         if (mm < 0)
3460                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3461                                          "Invalid mode specification %s", mode);
3462
3463         /* Delay is only supported for shutdown/sleep */
3464         if (mm == INHIBIT_DELAY && (w & ~(INHIBIT_SHUTDOWN|INHIBIT_SLEEP)))
3465                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3466                                          "Delay inhibitors only supported for shutdown and sleep");
3467
3468         /* Don't allow taking delay locks while we are already
3469          * executing the operation. We shouldn't create the impression
3470          * that the lock was successful if the machine is about to go
3471          * down/suspend any moment. */
3472         if (m->delayed_action && m->delayed_action->inhibit_what & w)
3473                 return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS,
3474                                          "The operation inhibition has been requested for is already running");
3475
3476         r = bus_verify_polkit_async(
3477                         message,
3478                         w == INHIBIT_SHUTDOWN             ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-shutdown" : "org.freedesktop.login1.inhibit-delay-shutdown") :
3479                         w == INHIBIT_SLEEP                ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-sleep"    : "org.freedesktop.login1.inhibit-delay-sleep") :
3480                         w == INHIBIT_IDLE                 ? "org.freedesktop.login1.inhibit-block-idle" :
3481                         w == INHIBIT_HANDLE_POWER_KEY     ? "org.freedesktop.login1.inhibit-handle-power-key" :
3482                         w == INHIBIT_HANDLE_SUSPEND_KEY   ? "org.freedesktop.login1.inhibit-handle-suspend-key" :
3483                         w == INHIBIT_HANDLE_REBOOT_KEY    ? "org.freedesktop.login1.inhibit-handle-reboot-key" :
3484                         w == INHIBIT_HANDLE_HIBERNATE_KEY ? "org.freedesktop.login1.inhibit-handle-hibernate-key" :
3485                                                             "org.freedesktop.login1.inhibit-handle-lid-switch",
3486                         /* details= */ NULL,
3487                         &m->polkit_registry,
3488                         error);
3489         if (r < 0)
3490                 return r;
3491         if (r == 0)
3492                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
3493
3494         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID|SD_BUS_CREDS_PID, &creds);
3495         if (r < 0)
3496                 return r;
3497
3498         r = sd_bus_creds_get_euid(creds, &uid);
3499         if (r < 0)
3500                 return r;
3501
3502         r = sd_bus_creds_get_pid(creds, &pid);
3503         if (r < 0)
3504                 return r;
3505
3506         r = pidref_set_pid(&pidref, pid);
3507         if (r < 0)
3508                 return sd_bus_error_set_errnof(error, r, "Failed pin source process "PID_FMT": %m", pid);
3509
3510         if (hashmap_size(m->inhibitors) >= m->inhibitors_max)
3511                 return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED,
3512                                          "Maximum number of inhibitors (%" PRIu64 ") reached, refusing further inhibitors.",
3513                                          m->inhibitors_max);
3514
3515         do {
3516                 id = mfree(id);
3517
3518                 if (asprintf(&id, "%" PRIu64, ++m->inhibit_counter) < 0)
3519                         return -ENOMEM;
3520
3521         } while (hashmap_get(m->inhibitors, id));
3522
3523         _cleanup_(inhibitor_freep) Inhibitor *i = NULL;
3524         r = manager_add_inhibitor(m, id, &i);
3525         if (r < 0)
3526                 return r;
3527
3528         i->what = w;
3529         i->mode = mm;
3530         i->pid = TAKE_PIDREF(pidref);
3531         i->uid = uid;
3532         i->why = strdup(why);
3533         i->who = strdup(who);
3534
3535         if (!i->why || !i->who)
3536                 return -ENOMEM;
3537
3538         fifo_fd = inhibitor_create_fifo(i);
3539         if (fifo_fd < 0)
3540                 return fifo_fd;
3541
3542         r = inhibitor_start(i);
3543         if (r < 0)
3544                 return r;
3545         TAKE_PTR(i);
3546
3547         return sd_bus_reply_method_return(message, "h", fifo_fd);
3548 }
3549
3550 static const sd_bus_vtable manager_vtable[] = {
3551         SD_BUS_VTABLE_START(0),
3552
3553         SD_BUS_WRITABLE_PROPERTY("EnableWallMessages", "b", bus_property_get_bool, bus_property_set_bool, offsetof(Manager, enable_wall_messages), 0),
3554         SD_BUS_WRITABLE_PROPERTY("WallMessage", "s", NULL, NULL, offsetof(Manager, wall_message), 0),
3555
3556         SD_BUS_PROPERTY("NAutoVTs", "u", NULL, offsetof(Manager, n_autovts), SD_BUS_VTABLE_PROPERTY_CONST),
3557         SD_BUS_PROPERTY("KillOnlyUsers", "as", NULL, offsetof(Manager, kill_only_users), SD_BUS_VTABLE_PROPERTY_CONST),
3558         SD_BUS_PROPERTY("KillExcludeUsers", "as", NULL, offsetof(Manager, kill_exclude_users), SD_BUS_VTABLE_PROPERTY_CONST),
3559         SD_BUS_PROPERTY("KillUserProcesses", "b", bus_property_get_bool, offsetof(Manager, kill_user_processes), SD_BUS_VTABLE_PROPERTY_CONST),
3560         SD_BUS_PROPERTY("RebootParameter", "s", property_get_reboot_parameter, 0, 0),
3561         SD_BUS_PROPERTY("RebootToFirmwareSetup", "b", property_get_reboot_to_firmware_setup, 0, 0),
3562         SD_BUS_PROPERTY("RebootToBootLoaderMenu", "t", property_get_reboot_to_boot_loader_menu, 0, 0),
3563         SD_BUS_PROPERTY("RebootToBootLoaderEntry", "s", property_get_reboot_to_boot_loader_entry, 0, 0),
3564         SD_BUS_PROPERTY("BootLoaderEntries", "as", property_get_boot_loader_entries, 0, SD_BUS_VTABLE_PROPERTY_CONST),
3565         SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3566         SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3567         SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3568         SD_BUS_PROPERTY("BlockInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3569         SD_BUS_PROPERTY("DelayInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3570         SD_BUS_PROPERTY("InhibitDelayMaxUSec", "t", NULL, offsetof(Manager, inhibit_delay_max), SD_BUS_VTABLE_PROPERTY_CONST),
3571         SD_BUS_PROPERTY("UserStopDelayUSec", "t", NULL, offsetof(Manager, user_stop_delay), SD_BUS_VTABLE_PROPERTY_CONST),
3572         SD_BUS_PROPERTY("SleepOperation", "as", property_get_sleep_operations, 0, SD_BUS_VTABLE_PROPERTY_CONST),
3573         SD_BUS_PROPERTY("HandlePowerKey", "s", property_get_handle_action, offsetof(Manager, handle_power_key), SD_BUS_VTABLE_PROPERTY_CONST),
3574         SD_BUS_PROPERTY("HandlePowerKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_power_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3575         SD_BUS_PROPERTY("HandleRebootKey", "s", property_get_handle_action, offsetof(Manager, handle_reboot_key), SD_BUS_VTABLE_PROPERTY_CONST),
3576         SD_BUS_PROPERTY("HandleRebootKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_reboot_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3577         SD_BUS_PROPERTY("HandleSuspendKey", "s", property_get_handle_action, offsetof(Manager, handle_suspend_key), SD_BUS_VTABLE_PROPERTY_CONST),
3578         SD_BUS_PROPERTY("HandleSuspendKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_suspend_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3579         SD_BUS_PROPERTY("HandleHibernateKey", "s", property_get_handle_action, offsetof(Manager, handle_hibernate_key), SD_BUS_VTABLE_PROPERTY_CONST),
3580         SD_BUS_PROPERTY("HandleHibernateKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_hibernate_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3581         SD_BUS_PROPERTY("HandleLidSwitch", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch), SD_BUS_VTABLE_PROPERTY_CONST),
3582         SD_BUS_PROPERTY("HandleLidSwitchExternalPower", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch_ep), SD_BUS_VTABLE_PROPERTY_CONST),
3583         SD_BUS_PROPERTY("HandleLidSwitchDocked", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch_docked), SD_BUS_VTABLE_PROPERTY_CONST),
3584         SD_BUS_PROPERTY("HoldoffTimeoutUSec", "t", NULL, offsetof(Manager, holdoff_timeout_usec), SD_BUS_VTABLE_PROPERTY_CONST),
3585         SD_BUS_PROPERTY("IdleAction", "s", property_get_handle_action, offsetof(Manager, idle_action), SD_BUS_VTABLE_PROPERTY_CONST),
3586         SD_BUS_PROPERTY("IdleActionUSec", "t", NULL, offsetof(Manager, idle_action_usec), SD_BUS_VTABLE_PROPERTY_CONST),
3587         SD_BUS_PROPERTY("PreparingForShutdown", "b", property_get_preparing, 0, 0),
3588         SD_BUS_PROPERTY("PreparingForSleep", "b", property_get_preparing, 0, 0),
3589         SD_BUS_PROPERTY("ScheduledShutdown", "(st)", property_get_scheduled_shutdown, 0, 0),
3590         SD_BUS_PROPERTY("Docked", "b", property_get_docked, 0, 0),
3591         SD_BUS_PROPERTY("LidClosed", "b", property_get_lid_closed, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3592         SD_BUS_PROPERTY("OnExternalPower", "b", property_get_on_external_power, 0, 0),
3593         SD_BUS_PROPERTY("RemoveIPC", "b", bus_property_get_bool, offsetof(Manager, remove_ipc), SD_BUS_VTABLE_PROPERTY_CONST),
3594         SD_BUS_PROPERTY("RuntimeDirectorySize", "t", NULL, offsetof(Manager, runtime_dir_size), SD_BUS_VTABLE_PROPERTY_CONST),
3595         SD_BUS_PROPERTY("RuntimeDirectoryInodesMax", "t", NULL, offsetof(Manager, runtime_dir_inodes), SD_BUS_VTABLE_PROPERTY_CONST),
3596         SD_BUS_PROPERTY("InhibitorsMax", "t", NULL, offsetof(Manager, inhibitors_max), SD_BUS_VTABLE_PROPERTY_CONST),
3597         SD_BUS_PROPERTY("NCurrentInhibitors", "t", property_get_hashmap_size, offsetof(Manager, inhibitors), 0),
3598         SD_BUS_PROPERTY("SessionsMax", "t", NULL, offsetof(Manager, sessions_max), SD_BUS_VTABLE_PROPERTY_CONST),
3599         SD_BUS_PROPERTY("NCurrentSessions", "t", property_get_hashmap_size, offsetof(Manager, sessions), 0),
3600         SD_BUS_PROPERTY("UserTasksMax", "t", property_get_compat_user_tasks_max, 0, SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
3601         SD_BUS_PROPERTY("StopIdleSessionUSec", "t", NULL, offsetof(Manager, stop_idle_session_usec), SD_BUS_VTABLE_PROPERTY_CONST),
3602
3603         SD_BUS_METHOD_WITH_ARGS("GetSession",
3604                                 SD_BUS_ARGS("s", session_id),
3605                                 SD_BUS_RESULT("o", object_path),
3606                                 method_get_session,
3607                                 SD_BUS_VTABLE_UNPRIVILEGED),
3608         SD_BUS_METHOD_WITH_ARGS("GetSessionByPID",
3609                                 SD_BUS_ARGS("u", pid),
3610                                 SD_BUS_RESULT("o", object_path),
3611                                 method_get_session_by_pid,
3612                                 SD_BUS_VTABLE_UNPRIVILEGED),
3613         SD_BUS_METHOD_WITH_ARGS("GetUser",
3614                                 SD_BUS_ARGS("u", uid),
3615                                 SD_BUS_RESULT("o", object_path),
3616                                 method_get_user,
3617                                 SD_BUS_VTABLE_UNPRIVILEGED),
3618         SD_BUS_METHOD_WITH_ARGS("GetUserByPID",
3619                                 SD_BUS_ARGS("u", pid),
3620                                 SD_BUS_RESULT("o", object_path),
3621                                 method_get_user_by_pid,
3622                                 SD_BUS_VTABLE_UNPRIVILEGED),
3623         SD_BUS_METHOD_WITH_ARGS("GetSeat",
3624                                 SD_BUS_ARGS("s", seat_id),
3625                                 SD_BUS_RESULT("o", object_path),
3626                                 method_get_seat,
3627                                 SD_BUS_VTABLE_UNPRIVILEGED),
3628         SD_BUS_METHOD_WITH_ARGS("ListSessions",
3629                                 SD_BUS_NO_ARGS,
3630                                 SD_BUS_RESULT("a(susso)", sessions),
3631                                 method_list_sessions,
3632                                 SD_BUS_VTABLE_UNPRIVILEGED),
3633         SD_BUS_METHOD_WITH_ARGS("ListUsers",
3634                                 SD_BUS_NO_ARGS,
3635                                 SD_BUS_RESULT("a(uso)", users),
3636                                 method_list_users,
3637                                 SD_BUS_VTABLE_UNPRIVILEGED),
3638         SD_BUS_METHOD_WITH_ARGS("ListSeats",
3639                                 SD_BUS_NO_ARGS,
3640                                 SD_BUS_RESULT("a(so)", seats),
3641                                 method_list_seats,
3642                                 SD_BUS_VTABLE_UNPRIVILEGED),
3643         SD_BUS_METHOD_WITH_ARGS("ListInhibitors",
3644                                 SD_BUS_NO_ARGS,
3645                                 SD_BUS_RESULT("a(ssssuu)", inhibitors),
3646                                 method_list_inhibitors,
3647                                 SD_BUS_VTABLE_UNPRIVILEGED),
3648         SD_BUS_METHOD_WITH_ARGS("CreateSession",
3649                                 SD_BUS_ARGS("u", uid,
3650                                             "u", pid,
3651                                             "s", service,
3652                                             "s", type,
3653                                             "s", class,
3654                                             "s", desktop,
3655                                             "s", seat_id,
3656                                             "u", vtnr,
3657                                             "s", tty,
3658                                             "s", display,
3659                                             "b", remote,
3660                                             "s", remote_user,
3661                                             "s", remote_host,
3662                                             "a(sv)", properties),
3663                                 SD_BUS_RESULT("s", session_id,
3664                                               "o", object_path,
3665                                               "s", runtime_path,
3666                                               "h", fifo_fd,
3667                                               "u", uid,
3668                                               "s", seat_id,
3669                                               "u", vtnr,
3670                                               "b", existing),
3671                                 method_create_session,
3672                                 0),
3673         SD_BUS_METHOD_WITH_ARGS("CreateSessionWithPIDFD",
3674                                 SD_BUS_ARGS("u", uid,
3675                                             "h", pidfd,
3676                                             "s", service,
3677                                             "s", type,
3678                                             "s", class,
3679                                             "s", desktop,
3680                                             "s", seat_id,
3681                                             "u", vtnr,
3682                                             "s", tty,
3683                                             "s", display,
3684                                             "b", remote,
3685                                             "s", remote_user,
3686                                             "s", remote_host,
3687                                             "t", flags,
3688                                             "a(sv)", properties),
3689                                 SD_BUS_RESULT("s", session_id,
3690                                               "o", object_path,
3691                                               "s", runtime_path,
3692                                               "h", fifo_fd,
3693                                               "u", uid,
3694                                               "s", seat_id,
3695                                               "u", vtnr,
3696                                               "b", existing),
3697                                 method_create_session_pidfd,
3698                                 0),
3699         SD_BUS_METHOD_WITH_ARGS("ReleaseSession",
3700                                 SD_BUS_ARGS("s", session_id),
3701                                 SD_BUS_NO_RESULT,
3702                                 method_release_session,
3703                                 0),
3704         SD_BUS_METHOD_WITH_ARGS("ActivateSession",
3705                                 SD_BUS_ARGS("s", session_id),
3706                                 SD_BUS_NO_RESULT,
3707                                 method_activate_session,
3708                                 SD_BUS_VTABLE_UNPRIVILEGED),
3709         SD_BUS_METHOD_WITH_ARGS("ActivateSessionOnSeat",
3710                                 SD_BUS_ARGS("s", session_id, "s", seat_id),
3711                                 SD_BUS_NO_RESULT,
3712                                 method_activate_session_on_seat,
3713                                 SD_BUS_VTABLE_UNPRIVILEGED),
3714         SD_BUS_METHOD_WITH_ARGS("LockSession",
3715                                 SD_BUS_ARGS("s", session_id),
3716                                 SD_BUS_NO_RESULT,
3717                                 method_lock_session,
3718                                 SD_BUS_VTABLE_UNPRIVILEGED),
3719         SD_BUS_METHOD_WITH_ARGS("UnlockSession",
3720                                 SD_BUS_ARGS("s", session_id),
3721                                 SD_BUS_NO_RESULT,
3722                                 method_lock_session,
3723                                 SD_BUS_VTABLE_UNPRIVILEGED),
3724         SD_BUS_METHOD("LockSessions",
3725                       NULL,
3726                       NULL,
3727                       method_lock_sessions,
3728                       SD_BUS_VTABLE_UNPRIVILEGED),
3729         SD_BUS_METHOD("UnlockSessions",
3730                       NULL,
3731                       NULL,
3732                       method_lock_sessions,
3733                       SD_BUS_VTABLE_UNPRIVILEGED),
3734         SD_BUS_METHOD_WITH_ARGS("KillSession",
3735                                 SD_BUS_ARGS("s", session_id, "s", who, "i", signal_number),
3736                                 SD_BUS_NO_RESULT,
3737                                 method_kill_session,
3738                                 SD_BUS_VTABLE_UNPRIVILEGED),
3739         SD_BUS_METHOD_WITH_ARGS("KillUser",
3740                                 SD_BUS_ARGS("u", uid, "i", signal_number),
3741                                 SD_BUS_NO_RESULT,
3742                                 method_kill_user,
3743                                 SD_BUS_VTABLE_UNPRIVILEGED),
3744         SD_BUS_METHOD_WITH_ARGS("TerminateSession",
3745                                 SD_BUS_ARGS("s", session_id),
3746                                 SD_BUS_NO_RESULT,
3747                                 method_terminate_session,
3748                                 SD_BUS_VTABLE_UNPRIVILEGED),
3749         SD_BUS_METHOD_WITH_ARGS("TerminateUser",
3750                                 SD_BUS_ARGS("u", uid),
3751                                 SD_BUS_NO_RESULT,
3752                                 method_terminate_user,
3753                                 SD_BUS_VTABLE_UNPRIVILEGED),
3754         SD_BUS_METHOD_WITH_ARGS("TerminateSeat",
3755                                 SD_BUS_ARGS("s", seat_id),
3756                                 SD_BUS_NO_RESULT,
3757                                 method_terminate_seat,
3758                                 SD_BUS_VTABLE_UNPRIVILEGED),
3759         SD_BUS_METHOD_WITH_ARGS("SetUserLinger",
3760                                 SD_BUS_ARGS("u", uid, "b", enable, "b", interactive),
3761                                 SD_BUS_NO_RESULT,
3762                                 method_set_user_linger,
3763                                 SD_BUS_VTABLE_UNPRIVILEGED),
3764         SD_BUS_METHOD_WITH_ARGS("AttachDevice",
3765                                 SD_BUS_ARGS("s", seat_id, "s", sysfs_path, "b", interactive),
3766                                 SD_BUS_NO_RESULT,
3767                                 method_attach_device,
3768                                 SD_BUS_VTABLE_UNPRIVILEGED),
3769         SD_BUS_METHOD_WITH_ARGS("FlushDevices",
3770                                 SD_BUS_ARGS("b", interactive),
3771                                 SD_BUS_NO_RESULT,
3772                                 method_flush_devices,
3773                                 SD_BUS_VTABLE_UNPRIVILEGED),
3774         SD_BUS_METHOD_WITH_ARGS("PowerOff",
3775                                 SD_BUS_ARGS("b", interactive),
3776                                 SD_BUS_NO_RESULT,
3777                                 method_poweroff,
3778                                 SD_BUS_VTABLE_UNPRIVILEGED),
3779         SD_BUS_METHOD_WITH_ARGS("PowerOffWithFlags",
3780                                 SD_BUS_ARGS("t", flags),
3781                                 SD_BUS_NO_RESULT,
3782                                 method_poweroff,
3783                                 SD_BUS_VTABLE_UNPRIVILEGED),
3784         SD_BUS_METHOD_WITH_ARGS("Reboot",
3785                                 SD_BUS_ARGS("b", interactive),
3786                                 SD_BUS_NO_RESULT,
3787                                 method_reboot,
3788                                 SD_BUS_VTABLE_UNPRIVILEGED),
3789         SD_BUS_METHOD_WITH_ARGS("RebootWithFlags",
3790                                 SD_BUS_ARGS("t", flags),
3791                                 SD_BUS_NO_RESULT,
3792                                 method_reboot,
3793                                 SD_BUS_VTABLE_UNPRIVILEGED),
3794         SD_BUS_METHOD_WITH_ARGS("Halt",
3795                                 SD_BUS_ARGS("b", interactive),
3796                                 SD_BUS_NO_RESULT,
3797                                 method_halt,
3798                                 SD_BUS_VTABLE_UNPRIVILEGED),
3799         SD_BUS_METHOD_WITH_ARGS("HaltWithFlags",
3800                                 SD_BUS_ARGS("t", flags),
3801                                 SD_BUS_NO_RESULT,
3802                                 method_halt,
3803                                 SD_BUS_VTABLE_UNPRIVILEGED),
3804         SD_BUS_METHOD_WITH_ARGS("Suspend",
3805                                 SD_BUS_ARGS("b", interactive),
3806                                 SD_BUS_NO_RESULT,
3807                                 method_suspend,
3808                                 SD_BUS_VTABLE_UNPRIVILEGED),
3809         SD_BUS_METHOD_WITH_ARGS("SuspendWithFlags",
3810                                 SD_BUS_ARGS("t", flags),
3811                                 SD_BUS_NO_RESULT,
3812                                 method_suspend,
3813                                 SD_BUS_VTABLE_UNPRIVILEGED),
3814         SD_BUS_METHOD_WITH_ARGS("Hibernate",
3815                                 SD_BUS_ARGS("b", interactive),
3816                                 SD_BUS_NO_RESULT,
3817                                 method_hibernate,
3818                                 SD_BUS_VTABLE_UNPRIVILEGED),
3819         SD_BUS_METHOD_WITH_ARGS("HibernateWithFlags",
3820                                 SD_BUS_ARGS("t", flags),
3821                                 SD_BUS_NO_RESULT,
3822                                 method_hibernate,
3823                                 SD_BUS_VTABLE_UNPRIVILEGED),
3824         SD_BUS_METHOD_WITH_ARGS("HybridSleep",
3825                                 SD_BUS_ARGS("b", interactive),
3826                                 SD_BUS_NO_RESULT,
3827                                 method_hybrid_sleep,
3828                                 SD_BUS_VTABLE_UNPRIVILEGED),
3829         SD_BUS_METHOD_WITH_ARGS("HybridSleepWithFlags",
3830                                 SD_BUS_ARGS("t", flags),
3831                                 SD_BUS_NO_RESULT,
3832                                 method_hybrid_sleep,
3833                                 SD_BUS_VTABLE_UNPRIVILEGED),
3834         SD_BUS_METHOD_WITH_ARGS("SuspendThenHibernate",
3835                                 SD_BUS_ARGS("b", interactive),
3836                                 SD_BUS_NO_RESULT,
3837                                 method_suspend_then_hibernate,
3838                                 SD_BUS_VTABLE_UNPRIVILEGED),
3839         SD_BUS_METHOD_WITH_ARGS("SuspendThenHibernateWithFlags",
3840                                 SD_BUS_ARGS("t", flags),
3841                                 SD_BUS_NO_RESULT,
3842                                 method_suspend_then_hibernate,
3843                                 SD_BUS_VTABLE_UNPRIVILEGED),
3844         SD_BUS_METHOD_WITH_ARGS("Sleep",
3845                                 SD_BUS_ARGS("t", flags),
3846                                 SD_BUS_NO_RESULT,
3847                                 method_sleep,
3848                                 SD_BUS_VTABLE_UNPRIVILEGED),
3849         SD_BUS_METHOD_WITH_ARGS("CanPowerOff",
3850                                 SD_BUS_NO_ARGS,
3851                                 SD_BUS_RESULT("s", result),
3852                                 method_can_poweroff,
3853                                 SD_BUS_VTABLE_UNPRIVILEGED),
3854         SD_BUS_METHOD_WITH_ARGS("CanReboot",
3855                                 SD_BUS_NO_ARGS,
3856                                 SD_BUS_RESULT("s", result),
3857                                 method_can_reboot,
3858                                 SD_BUS_VTABLE_UNPRIVILEGED),
3859         SD_BUS_METHOD_WITH_ARGS("CanHalt",
3860                                 SD_BUS_NO_ARGS,
3861                                 SD_BUS_RESULT("s", result),
3862                                 method_can_halt,
3863                                 SD_BUS_VTABLE_UNPRIVILEGED),
3864         SD_BUS_METHOD_WITH_ARGS("CanSuspend",
3865                                 SD_BUS_NO_ARGS,
3866                                 SD_BUS_RESULT("s", result),
3867                                 method_can_suspend,
3868                                 SD_BUS_VTABLE_UNPRIVILEGED),
3869         SD_BUS_METHOD_WITH_ARGS("CanHibernate",
3870                                 SD_BUS_NO_ARGS,
3871                                 SD_BUS_RESULT("s", result),
3872                                 method_can_hibernate,
3873                                 SD_BUS_VTABLE_UNPRIVILEGED),
3874         SD_BUS_METHOD_WITH_ARGS("CanHybridSleep",
3875                                 SD_BUS_NO_ARGS,
3876                                 SD_BUS_RESULT("s", result),
3877                                 method_can_hybrid_sleep,
3878                                 SD_BUS_VTABLE_UNPRIVILEGED),
3879         SD_BUS_METHOD_WITH_ARGS("CanSuspendThenHibernate",
3880                                 SD_BUS_NO_ARGS,
3881                                 SD_BUS_RESULT("s", result),
3882                                 method_can_suspend_then_hibernate,
3883                                 SD_BUS_VTABLE_UNPRIVILEGED),
3884         SD_BUS_METHOD_WITH_ARGS("CanSleep",
3885                                 SD_BUS_NO_ARGS,
3886                                 SD_BUS_RESULT("s", result),
3887                                 method_can_sleep,
3888                                 SD_BUS_VTABLE_UNPRIVILEGED),
3889         SD_BUS_METHOD_WITH_ARGS("ScheduleShutdown",
3890                                 SD_BUS_ARGS("s", type, "t", usec),
3891                                 SD_BUS_NO_RESULT,
3892                                 method_schedule_shutdown,
3893                                 SD_BUS_VTABLE_UNPRIVILEGED),
3894         SD_BUS_METHOD_WITH_ARGS("CancelScheduledShutdown",
3895                                 SD_BUS_NO_ARGS,
3896                                 SD_BUS_RESULT("b", cancelled),
3897                                 method_cancel_scheduled_shutdown,
3898                                 SD_BUS_VTABLE_UNPRIVILEGED),
3899         SD_BUS_METHOD_WITH_ARGS("Inhibit",
3900                                 SD_BUS_ARGS("s", what, "s", who, "s", why, "s", mode),
3901                                 SD_BUS_RESULT("h", pipe_fd),
3902                                 method_inhibit,
3903                                 SD_BUS_VTABLE_UNPRIVILEGED),
3904         SD_BUS_METHOD_WITH_ARGS("CanRebootParameter",
3905                                 SD_BUS_NO_ARGS,
3906                                 SD_BUS_RESULT("s", result),
3907                                 method_can_reboot_parameter,
3908                                 SD_BUS_VTABLE_UNPRIVILEGED),
3909         SD_BUS_METHOD_WITH_ARGS("SetRebootParameter",
3910                                 SD_BUS_ARGS("s", parameter),
3911                                 SD_BUS_NO_RESULT,
3912                                 method_set_reboot_parameter,
3913                                 SD_BUS_VTABLE_UNPRIVILEGED),
3914         SD_BUS_METHOD_WITH_ARGS("CanRebootToFirmwareSetup",
3915                                 SD_BUS_NO_ARGS,
3916                                 SD_BUS_RESULT("s", result),
3917                                 method_can_reboot_to_firmware_setup,
3918                                 SD_BUS_VTABLE_UNPRIVILEGED),
3919         SD_BUS_METHOD_WITH_ARGS("SetRebootToFirmwareSetup",
3920                                 SD_BUS_ARGS("b", enable),
3921                                 SD_BUS_NO_RESULT,
3922                                 method_set_reboot_to_firmware_setup,
3923                                 SD_BUS_VTABLE_UNPRIVILEGED),
3924         SD_BUS_METHOD_WITH_ARGS("CanRebootToBootLoaderMenu",
3925                                 SD_BUS_NO_ARGS,
3926                                 SD_BUS_RESULT("s", result),
3927                                 method_can_reboot_to_boot_loader_menu,
3928                                 SD_BUS_VTABLE_UNPRIVILEGED),
3929         SD_BUS_METHOD_WITH_ARGS("SetRebootToBootLoaderMenu",
3930                                 SD_BUS_ARGS("t", timeout),
3931                                 SD_BUS_NO_RESULT,
3932                                 method_set_reboot_to_boot_loader_menu,
3933                                 SD_BUS_VTABLE_UNPRIVILEGED),
3934         SD_BUS_METHOD_WITH_ARGS("CanRebootToBootLoaderEntry",
3935                                 SD_BUS_NO_ARGS,
3936                                 SD_BUS_RESULT("s", result),
3937                                 method_can_reboot_to_boot_loader_entry,
3938                                 SD_BUS_VTABLE_UNPRIVILEGED),
3939         SD_BUS_METHOD_WITH_ARGS("SetRebootToBootLoaderEntry",
3940                                 SD_BUS_ARGS("s", boot_loader_entry),
3941                                 SD_BUS_NO_RESULT,
3942                                 method_set_reboot_to_boot_loader_entry,
3943                                 SD_BUS_VTABLE_UNPRIVILEGED),
3944         SD_BUS_METHOD_WITH_ARGS("SetWallMessage",
3945                                 SD_BUS_ARGS("s", wall_message, "b", enable),
3946                                 SD_BUS_NO_RESULT,
3947                                 method_set_wall_message,
3948                                 SD_BUS_VTABLE_UNPRIVILEGED),
3949
3950         SD_BUS_SIGNAL_WITH_ARGS("SessionNew",
3951                                 SD_BUS_ARGS("s", session_id, "o", object_path),
3952                                 0),
3953         SD_BUS_SIGNAL_WITH_ARGS("SessionRemoved",
3954                                 SD_BUS_ARGS("s", session_id, "o", object_path),
3955                                 0),
3956         SD_BUS_SIGNAL_WITH_ARGS("UserNew",
3957                                 SD_BUS_ARGS("u", uid, "o", object_path),
3958                                 0),
3959         SD_BUS_SIGNAL_WITH_ARGS("UserRemoved",
3960                                 SD_BUS_ARGS("u", uid, "o", object_path),
3961                                 0),
3962         SD_BUS_SIGNAL_WITH_ARGS("SeatNew",
3963                                 SD_BUS_ARGS("s", seat_id, "o", object_path),
3964                                 0),
3965         SD_BUS_SIGNAL_WITH_ARGS("SeatRemoved",
3966                                 SD_BUS_ARGS("s", seat_id, "o", object_path),
3967                                 0),
3968         SD_BUS_SIGNAL_WITH_ARGS("PrepareForShutdown",
3969                                 SD_BUS_ARGS("b", start),
3970                                 0),
3971         SD_BUS_SIGNAL_WITH_ARGS("PrepareForShutdownWithMetadata",
3972                                 SD_BUS_ARGS("b", start, "a{sv}", metadata),
3973                                 0),
3974         SD_BUS_SIGNAL_WITH_ARGS("PrepareForSleep",
3975                                 SD_BUS_ARGS("b", start),
3976                                 0),
3977
3978         SD_BUS_VTABLE_END
3979 };
3980
3981 const BusObjectImplementation manager_object = {
3982         "/org/freedesktop/login1",
3983         "org.freedesktop.login1.Manager",
3984         .vtables = BUS_VTABLES(manager_vtable),
3985         .children = BUS_IMPLEMENTATIONS(&seat_object,
3986                                         &session_object,
3987                                         &user_object),
3988 };
3989
3990 static int session_jobs_reply(Session *s, uint32_t jid, const char *unit, const char *result) {
3991         assert(s);
3992         assert(unit);
3993
3994         if (!s->started)
3995                 return 0;
3996
3997         if (result && !streq(result, "done")) {
3998                 _cleanup_(sd_bus_error_free) sd_bus_error e = SD_BUS_ERROR_NULL;
3999
4000                 sd_bus_error_setf(&e, BUS_ERROR_JOB_FAILED,
4001                                   "Job %u for unit '%s' failed with '%s'", jid, unit, result);
4002                 return session_send_create_reply(s, &e);
4003         }
4004
4005         return session_send_create_reply(s, NULL);
4006 }
4007
4008 int match_job_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
4009         const char *path, *result, *unit;
4010         Manager *m = ASSERT_PTR(userdata);
4011         Session *session;
4012         uint32_t id;
4013         User *user;
4014         int r;
4015
4016         assert(message);
4017
4018         r = sd_bus_message_read(message, "uoss", &id, &path, &unit, &result);
4019         if (r < 0) {
4020                 bus_log_parse_error(r);
4021                 return 0;
4022         }
4023
4024         if (m->action_job && streq(m->action_job, path)) {
4025                 assert(m->delayed_action);
4026                 log_info("Operation '%s' finished.", handle_action_to_string(m->delayed_action->handle));
4027
4028                 /* Tell people that they now may take a lock again */
4029                 (void) send_prepare_for(m, m->delayed_action, false);
4030
4031                 m->action_job = mfree(m->action_job);
4032                 m->delayed_action = NULL;
4033                 return 0;
4034         }
4035
4036         session = hashmap_get(m->session_units, unit);
4037         if (session) {
4038                 if (streq_ptr(path, session->scope_job)) {
4039                         session->scope_job = mfree(session->scope_job);
4040                         (void) session_jobs_reply(session, id, unit, result);
4041
4042                         session_save(session);
4043                         user_save(session->user);
4044                 }
4045
4046                 session_add_to_gc_queue(session);
4047         }
4048
4049         user = hashmap_get(m->user_units, unit);
4050         if (user) {
4051                 if (streq_ptr(path, user->service_job)) {
4052                         user->service_job = mfree(user->service_job);
4053
4054                         LIST_FOREACH(sessions_by_user, s, user->sessions)
4055                                 (void) session_jobs_reply(s, id, unit, NULL /* don't propagate user service failures to the client */);
4056
4057                         user_save(user);
4058                 }
4059
4060                 user_add_to_gc_queue(user);
4061         }
4062
4063         return 0;
4064 }
4065
4066 int match_unit_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
4067         const char *path, *unit;
4068         Manager *m = ASSERT_PTR(userdata);
4069         Session *session;
4070         User *user;
4071         int r;
4072
4073         assert(message);
4074
4075         r = sd_bus_message_read(message, "so", &unit, &path);
4076         if (r < 0) {
4077                 bus_log_parse_error(r);
4078                 return 0;
4079         }
4080
4081         session = hashmap_get(m->session_units, unit);
4082         if (session)
4083                 session_add_to_gc_queue(session);
4084
4085         user = hashmap_get(m->user_units, unit);
4086         if (user)
4087                 user_add_to_gc_queue(user);
4088
4089         return 0;
4090 }
4091
4092 int match_properties_changed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
4093         _cleanup_free_ char *unit = NULL;
4094         Manager *m = ASSERT_PTR(userdata);
4095         const char *path;
4096         Session *session;
4097         User *user;
4098         int r;
4099
4100         assert(message);
4101
4102         path = sd_bus_message_get_path(message);
4103         if (!path)
4104                 return 0;
4105
4106         r = unit_name_from_dbus_path(path, &unit);
4107         if (r == -EINVAL) /* not a unit */
4108                 return 0;
4109         if (r < 0) {
4110                 log_oom();
4111                 return 0;
4112         }
4113
4114         session = hashmap_get(m->session_units, unit);
4115         if (session)
4116                 session_add_to_gc_queue(session);
4117
4118         user = hashmap_get(m->user_units, unit);
4119         if (user)
4120                 user_add_to_gc_queue(user);
4121
4122         return 0;
4123 }
4124
4125 int match_reloading(sd_bus_message *message, void *userdata, sd_bus_error *error) {
4126         Manager *m = ASSERT_PTR(userdata);
4127         Session *session;
4128         int b, r;
4129
4130         assert(message);
4131
4132         r = sd_bus_message_read(message, "b", &b);
4133         if (r < 0) {
4134                 bus_log_parse_error(r);
4135                 return 0;
4136         }
4137
4138         if (b)
4139                 return 0;
4140
4141         /* systemd finished reloading, let's recheck all our sessions */
4142         log_debug("System manager has been reloaded, rechecking sessions...");
4143
4144         HASHMAP_FOREACH(session, m->sessions)
4145                 session_add_to_gc_queue(session);
4146
4147         return 0;
4148 }
4149
4150 int manager_send_changed(Manager *manager, const char *property, ...) {
4151         char **l;
4152
4153         assert(manager);
4154
4155         l = strv_from_stdarg_alloca(property);
4156
4157         return sd_bus_emit_properties_changed_strv(
4158                         manager->bus,
4159                         "/org/freedesktop/login1",
4160                         "org.freedesktop.login1.Manager",
4161                         l);
4162 }
4163
4164 static int strdup_job(sd_bus_message *reply, char **job) {
4165         const char *j;
4166         char *copy;
4167         int r;
4168
4169         r = sd_bus_message_read(reply, "o", &j);
4170         if (r < 0)
4171                 return r;
4172
4173         copy = strdup(j);
4174         if (!copy)
4175                 return -ENOMEM;
4176
4177         *job = copy;
4178         return 1;
4179 }
4180
4181 int manager_start_scope(
4182                 Manager *manager,
4183                 const char *scope,
4184                 const PidRef *pidref,
4185                 const char *slice,
4186                 const char *description,
4187                 char **wants,
4188                 char **after,
4189                 const char *requires_mounts_for,
4190                 sd_bus_message *more_properties,
4191                 sd_bus_error *error,
4192                 char **job) {
4193
4194         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
4195         int r;
4196
4197         assert(manager);
4198         assert(scope);
4199         assert(pidref_is_set(pidref));
4200         assert(job);
4201
4202         r = bus_message_new_method_call(manager->bus, &m, bus_systemd_mgr, "StartTransientUnit");
4203         if (r < 0)
4204                 return r;
4205
4206         r = sd_bus_message_append(m, "ss", strempty(scope), "fail");
4207         if (r < 0)
4208                 return r;
4209
4210         r = sd_bus_message_open_container(m, 'a', "(sv)");
4211         if (r < 0)
4212                 return r;
4213
4214         if (!isempty(slice)) {
4215                 r = sd_bus_message_append(m, "(sv)", "Slice", "s", slice);
4216                 if (r < 0)
4217                         return r;
4218         }
4219
4220         if (!isempty(description)) {
4221                 r = sd_bus_message_append(m, "(sv)", "Description", "s", description);
4222                 if (r < 0)
4223                         return r;
4224         }
4225
4226         STRV_FOREACH(i, wants) {
4227                 r = sd_bus_message_append(m, "(sv)", "Wants", "as", 1, *i);
4228                 if (r < 0)
4229                         return r;
4230         }
4231
4232         STRV_FOREACH(i, after) {
4233                 r = sd_bus_message_append(m, "(sv)", "After", "as", 1, *i);
4234                 if (r < 0)
4235                         return r;
4236         }
4237
4238         if (!empty_or_root(requires_mounts_for)) {
4239                 r = sd_bus_message_append(m, "(sv)", "RequiresMountsFor", "as", 1, requires_mounts_for);
4240                 if (r < 0)
4241                         return r;
4242         }
4243
4244         /* Make sure that the session shells are terminated with SIGHUP since bash and friends tend to ignore
4245          * SIGTERM */
4246         r = sd_bus_message_append(m, "(sv)", "SendSIGHUP", "b", true);
4247         if (r < 0)
4248                 return r;
4249
4250         r = bus_append_scope_pidref(m, pidref);
4251         if (r < 0)
4252                 return r;
4253
4254         /* For login session scopes, if a process is OOM killed by the kernel, *don't* terminate the rest of
4255            the scope */
4256         r = sd_bus_message_append(m, "(sv)", "OOMPolicy", "s", "continue");
4257         if (r < 0)
4258                 return r;
4259
4260         /* disable TasksMax= for the session scope, rely on the slice setting for it */
4261         r = sd_bus_message_append(m, "(sv)", "TasksMax", "t", UINT64_MAX);
4262         if (r < 0)
4263                 return bus_log_create_error(r);
4264
4265         if (more_properties) {
4266                 /* If TasksMax also appears here, it will overwrite the default value set above */
4267                 r = sd_bus_message_copy(m, more_properties, true);
4268                 if (r < 0)
4269                         return r;
4270         }
4271
4272         r = sd_bus_message_close_container(m);
4273         if (r < 0)
4274                 return r;
4275
4276         r = sd_bus_message_append(m, "a(sa(sv))", 0);
4277         if (r < 0)
4278                 return r;
4279
4280         r = sd_bus_call(manager->bus, m, 0, error, &reply);
4281         if (r < 0)
4282                 return r;
4283
4284         return strdup_job(reply, job);
4285 }
4286
4287 int manager_start_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) {
4288         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4289         int r;
4290
4291         assert(manager);
4292         assert(unit);
4293         assert(job);
4294
4295         r = bus_call_method(
4296                         manager->bus,
4297                         bus_systemd_mgr,
4298                         "StartUnit",
4299                         error,
4300                         &reply,
4301                         "ss", unit, "replace");
4302         if (r < 0)
4303                 return r;
4304
4305         return strdup_job(reply, job);
4306 }
4307
4308 int manager_stop_unit(Manager *manager, const char *unit, const char *job_mode, sd_bus_error *error, char **ret_job) {
4309         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4310         int r;
4311
4312         assert(manager);
4313         assert(unit);
4314         assert(ret_job);
4315
4316         r = bus_call_method(
4317                         manager->bus,
4318                         bus_systemd_mgr,
4319                         "StopUnit",
4320                         error,
4321                         &reply,
4322                         "ss", unit, job_mode ?: "fail");
4323         if (r < 0) {
4324                 if (sd_bus_error_has_names(error, BUS_ERROR_NO_SUCH_UNIT,
4325                                                   BUS_ERROR_LOAD_FAILED)) {
4326
4327                         *ret_job = NULL;
4328                         sd_bus_error_free(error);
4329                         return 0;
4330                 }
4331
4332                 return r;
4333         }
4334
4335         return strdup_job(reply, ret_job);
4336 }
4337
4338 int manager_abandon_scope(Manager *manager, const char *scope, sd_bus_error *ret_error) {
4339         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4340         _cleanup_free_ char *path = NULL;
4341         int r;
4342
4343         assert(manager);
4344         assert(scope);
4345
4346         path = unit_dbus_path_from_name(scope);
4347         if (!path)
4348                 return -ENOMEM;
4349
4350         r = sd_bus_call_method(
4351                         manager->bus,
4352                         "org.freedesktop.systemd1",
4353                         path,
4354                         "org.freedesktop.systemd1.Scope",
4355                         "Abandon",
4356                         &error,
4357                         NULL,
4358                         NULL);
4359         if (r < 0) {
4360                 if (sd_bus_error_has_names(&error, BUS_ERROR_NO_SUCH_UNIT,
4361                                                    BUS_ERROR_LOAD_FAILED,
4362                                                    BUS_ERROR_SCOPE_NOT_RUNNING))
4363                         return 0;
4364
4365                 sd_bus_error_move(ret_error, &error);
4366                 return r;
4367         }
4368
4369         return 1;
4370 }
4371
4372 int manager_kill_unit(Manager *manager, const char *unit, KillWho who, int signo, sd_bus_error *error) {
4373         assert(manager);
4374         assert(unit);
4375
4376         return bus_call_method(
4377                         manager->bus,
4378                         bus_systemd_mgr,
4379                         "KillUnit",
4380                         error,
4381                         NULL,
4382                         "ssi", unit, who == KILL_LEADER ? "main" : "all", signo);
4383 }
4384
4385 int manager_unit_is_active(Manager *manager, const char *unit, sd_bus_error *ret_error) {
4386         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4387         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4388         _cleanup_free_ char *path = NULL;
4389         const char *state;
4390         int r;
4391
4392         assert(manager);
4393         assert(unit);
4394
4395         path = unit_dbus_path_from_name(unit);
4396         if (!path)
4397                 return -ENOMEM;
4398
4399         r = sd_bus_get_property(
4400                         manager->bus,
4401                         "org.freedesktop.systemd1",
4402                         path,
4403                         "org.freedesktop.systemd1.Unit",
4404                         "ActiveState",
4405                         &error,
4406                         &reply,
4407                         "s");
4408         if (r < 0) {
4409                 /* systemd might have dropped off momentarily, let's
4410                  * not make this an error */
4411                 if (sd_bus_error_has_names(&error, SD_BUS_ERROR_NO_REPLY,
4412                                                    SD_BUS_ERROR_DISCONNECTED))
4413                         return true;
4414
4415                 /* If the unit is already unloaded then it's not
4416                  * active */
4417                 if (sd_bus_error_has_names(&error, BUS_ERROR_NO_SUCH_UNIT,
4418                                                    BUS_ERROR_LOAD_FAILED))
4419                         return false;
4420
4421                 sd_bus_error_move(ret_error, &error);
4422                 return r;
4423         }
4424
4425         r = sd_bus_message_read(reply, "s", &state);
4426         if (r < 0)
4427                 return r;
4428
4429         return !STR_IN_SET(state, "inactive", "failed");
4430 }
4431
4432 int manager_job_is_active(Manager *manager, const char *path, sd_bus_error *ret_error) {
4433         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4434         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4435         int r;
4436
4437         assert(manager);
4438         assert(path);
4439
4440         r = sd_bus_get_property(
4441                         manager->bus,
4442                         "org.freedesktop.systemd1",
4443                         path,
4444                         "org.freedesktop.systemd1.Job",
4445                         "State",
4446                         &error,
4447                         &reply,
4448                         "s");
4449         if (r < 0) {
4450                 if (sd_bus_error_has_names(&error, SD_BUS_ERROR_NO_REPLY,
4451                                                    SD_BUS_ERROR_DISCONNECTED))
4452                         return true;
4453
4454                 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_OBJECT))
4455                         return false;
4456
4457                 sd_bus_error_move(ret_error, &error);
4458                 return r;
4459         }
4460
4461         /* We don't actually care about the state really. The fact
4462          * that we could read the job state is enough for us */
4463
4464         return true;
4465 }