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 (SESSION_IS_SELF(name)) /* the caller's own session */
 145                 return get_sender_session(m, message, false, error, ret);
 146         if (SESSION_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_sessions_ex(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 595         Manager *m = ASSERT_PTR(userdata);
 596         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 597         int r;
 598
 599         assert(message);
 600
 601         r = sd_bus_message_new_method_return(message, &reply);
 602         if (r < 0)
 603                 return r;
 604
 605         r = sd_bus_message_open_container(reply, 'a', "(sussussbto)");
 606         if (r < 0)
 607                 return r;
 608
 609         Session *s;
 610         HASHMAP_FOREACH(s, m->sessions) {
 611                 _cleanup_free_ char *path = NULL;
 612                 dual_timestamp idle_ts;
 613                 bool idle;
 614
 615                 assert(s->user);
 616
 617                 path = session_bus_path(s);
 618                 if (!path)
 619                         return -ENOMEM;
 620
 621                 r = session_get_idle_hint(s, &idle_ts);
 622                 if (r < 0)
 623                         return r;
 624                 idle = r > 0;
 625
 626                 r = sd_bus_message_append(reply, "(sussussbto)",
 627                                           s->id,
 628                                           (uint32_t) s->user->user_record->uid,
 629                                           s->user->user_record->user_name,
 630                                           s->seat ? s->seat->id : "",
 631                                           (uint32_t) s->leader.pid,
 632                                           session_class_to_string(s->class),
 633                                           s->tty,
 634                                           idle,
 635                                           idle_ts.monotonic,
 636                                           path);
 637                 if (r < 0)
 638                         return r;
 639         }
 640
 641         r = sd_bus_message_close_container(reply);
 642         if (r < 0)
 643                 return r;
 644
 645         return sd_bus_send(NULL, reply, NULL);
 646 }
 647
 648 static int method_list_users(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 649         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 650         Manager *m = ASSERT_PTR(userdata);
 651         User *user;
 652         int r;
 653
 654         assert(message);
 655
 656         r = sd_bus_message_new_method_return(message, &reply);
 657         if (r < 0)
 658                 return r;
 659
 660         r = sd_bus_message_open_container(reply, 'a', "(uso)");
 661         if (r < 0)
 662                 return r;
 663
 664         HASHMAP_FOREACH(user, m->users) {
 665                 _cleanup_free_ char *p = NULL;
 666
 667                 p = user_bus_path(user);
 668                 if (!p)
 669                         return -ENOMEM;
 670
 671                 r = sd_bus_message_append(reply, "(uso)",
 672                                           (uint32_t) user->user_record->uid,
 673                                           user->user_record->user_name,
 674                                           p);
 675                 if (r < 0)
 676                         return r;
 677         }
 678
 679         r = sd_bus_message_close_container(reply);
 680         if (r < 0)
 681                 return r;
 682
 683         return sd_bus_send(NULL, reply, NULL);
 684 }
 685
 686 static int method_list_seats(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 687         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 688         Manager *m = ASSERT_PTR(userdata);
 689         Seat *seat;
 690         int r;
 691
 692         assert(message);
 693
 694         r = sd_bus_message_new_method_return(message, &reply);
 695         if (r < 0)
 696                 return r;
 697
 698         r = sd_bus_message_open_container(reply, 'a', "(so)");
 699         if (r < 0)
 700                 return r;
 701
 702         HASHMAP_FOREACH(seat, m->seats) {
 703                 _cleanup_free_ char *p = NULL;
 704
 705                 p = seat_bus_path(seat);
 706                 if (!p)
 707                         return -ENOMEM;
 708
 709                 r = sd_bus_message_append(reply, "(so)", seat->id, p);
 710                 if (r < 0)
 711                         return r;
 712         }
 713
 714         r = sd_bus_message_close_container(reply);
 715         if (r < 0)
 716                 return r;
 717
 718         return sd_bus_send(NULL, reply, NULL);
 719 }
 720
 721 static int method_list_inhibitors(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 722         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 723         Manager *m = ASSERT_PTR(userdata);
 724         Inhibitor *inhibitor;
 725         int r;
 726
 727         assert(message);
 728
 729         r = sd_bus_message_new_method_return(message, &reply);
 730         if (r < 0)
 731                 return r;
 732
 733         r = sd_bus_message_open_container(reply, 'a', "(ssssuu)");
 734         if (r < 0)
 735                 return r;
 736
 737         HASHMAP_FOREACH(inhibitor, m->inhibitors) {
 738
 739                 r = sd_bus_message_append(reply, "(ssssuu)",
 740                                           strempty(inhibit_what_to_string(inhibitor->what)),
 741                                           strempty(inhibitor->who),
 742                                           strempty(inhibitor->why),
 743                                           strempty(inhibit_mode_to_string(inhibitor->mode)),
 744                                           (uint32_t) inhibitor->uid,
 745                                           (uint32_t) inhibitor->pid.pid);
 746                 if (r < 0)
 747                         return r;
 748         }
 749
 750         r = sd_bus_message_close_container(reply);
 751         if (r < 0)
 752                 return r;
 753
 754         return sd_bus_send(NULL, reply, NULL);
 755 }
 756
 757 static int create_session(
 758                 sd_bus_message *message,
 759                 void *userdata,
 760                 sd_bus_error *error,
 761                 uid_t uid,
 762                 pid_t pid,
 763                 int pidfd,
 764                 const char *service,
 765                 const char *type,
 766                 const char *class,
 767                 const char *desktop,
 768                 const char *cseat,
 769                 uint32_t vtnr,
 770                 const char *tty,
 771                 const char *display,
 772                 int remote,
 773                 const char *remote_user,
 774                 const char *remote_host,
 775                 uint64_t flags) {
 776
 777         _cleanup_(pidref_done) PidRef leader = PIDREF_NULL;
 778         Manager *m = ASSERT_PTR(userdata);
 779         _cleanup_free_ char *id = NULL;
 780         Session *session = NULL;
 781         uint32_t audit_id = 0;
 782         User *user = NULL;
 783         Seat *seat = NULL;
 784         SessionType t;
 785         SessionClass c;
 786         int r;
 787
 788         assert(message);
 789
 790         if (!uid_is_valid(uid))
 791                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid UID");
 792
 793         if (flags != 0)
 794                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Flags must be zero.");
 795
 796         if (pidfd >= 0) {
 797                 r = pidref_set_pidfd(&leader, pidfd);
 798                 if (r < 0)
 799                         return r;
 800         } else if (pid == 0) {
 801                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 802                 pid_t p;
 803
 804                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 805                 if (r < 0)
 806                         return r;
 807
 808                 r = sd_bus_creds_get_pid(creds, &p);
 809                 if (r < 0)
 810                         return r;
 811
 812                 r = pidref_set_pid(&leader, p);
 813                 if (r < 0)
 814                         return r;
 815         } else {
 816                 assert(pid > 0);
 817
 818                 r = pidref_set_pid(&leader, pid);
 819                 if (r < 0)
 820                         return r;
 821         }
 822
 823         if (leader.pid == 1 || leader.pid == getpid_cached())
 824                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid leader PID");
 825
 826         if (isempty(type))
 827                 t = _SESSION_TYPE_INVALID;
 828         else {
 829                 t = session_type_from_string(type);
 830                 if (t < 0)
 831                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 832                                                  "Invalid session type %s", type);
 833         }
 834
 835         if (isempty(class))
 836                 c = _SESSION_CLASS_INVALID;
 837         else {
 838                 c = session_class_from_string(class);
 839                 if (c < 0)
 840                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 841                                                  "Invalid session class %s", class);
 842         }
 843
 844         if (isempty(desktop))
 845                 desktop = NULL;
 846         else {
 847                 if (!string_is_safe(desktop))
 848                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 849                                                  "Invalid desktop string %s", desktop);
 850         }
 851
 852         if (isempty(cseat))
 853                 seat = NULL;
 854         else {
 855                 seat = hashmap_get(m->seats, cseat);
 856                 if (!seat)
 857                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT,
 858                                                  "No seat '%s' known", cseat);
 859         }
 860
 861         if (tty_is_vc(tty)) {
 862                 int v;
 863
 864                 if (!seat)
 865                         seat = m->seat0;
 866                 else if (seat != m->seat0)
 867                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 868                                                  "TTY %s is virtual console but seat %s is not seat0", tty, seat->id);
 869
 870                 v = vtnr_from_tty(tty);
 871                 if (v <= 0)
 872                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 873                                                  "Cannot determine VT number from virtual console TTY %s", tty);
 874
 875                 if (vtnr == 0)
 876                         vtnr = (uint32_t) v;
 877                 else if (vtnr != (uint32_t) v)
 878                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 879                                                  "Specified TTY and VT number do not match");
 880
 881         } else if (tty_is_console(tty)) {
 882
 883                 if (!seat)
 884                         seat = m->seat0;
 885                 else if (seat != m->seat0)
 886                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 887                                                  "Console TTY specified but seat is not seat0");
 888
 889                 if (vtnr != 0)
 890                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 891                                                  "Console TTY specified but VT number is not 0");
 892         }
 893
 894         if (seat) {
 895                 if (seat_has_vts(seat)) {
 896                         if (vtnr <= 0 || vtnr > 63)
 897                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 898                                                          "VT number out of range");
 899                 } else {
 900                         if (vtnr != 0)
 901                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 902                                                          "Seat has no VTs but VT number not 0");
 903                 }
 904         }
 905
 906         if (t == _SESSION_TYPE_INVALID) {
 907                 if (!isempty(display))
 908                         t = SESSION_X11;
 909                 else if (!isempty(tty))
 910                         t = SESSION_TTY;
 911                 else
 912                         t = SESSION_UNSPECIFIED;
 913         }
 914
 915         if (c == _SESSION_CLASS_INVALID) {
 916                 if (t == SESSION_UNSPECIFIED)
 917                         c = SESSION_BACKGROUND;
 918                 else
 919                         c = SESSION_USER;
 920         }
 921
 922         /* Check if we are already in a logind session, and if so refuse. */
 923         r = manager_get_session_by_pidref(m, &leader, /* ret_session= */ NULL);
 924         if (r < 0)
 925                 return r;
 926         if (r > 0)
 927                 return sd_bus_error_setf(error, BUS_ERROR_SESSION_BUSY,
 928                                          "Already running in a session or user slice");
 929
 930         /* Old gdm and lightdm start the user-session on the same VT as the greeter session. But they destroy
 931          * the greeter session after the user-session and want the user-session to take over the VT. We need
 932          * to support this for backwards-compatibility, so make sure we allow new sessions on a VT that a
 933          * greeter is running on. Furthermore, to allow re-logins, we have to allow a greeter to take over a
 934          * used VT for the exact same reasons. */
 935         if (c != SESSION_GREETER &&
 936             vtnr > 0 &&
 937             vtnr < MALLOC_ELEMENTSOF(m->seat0->positions) &&
 938             m->seat0->positions[vtnr] &&
 939             m->seat0->positions[vtnr]->class != SESSION_GREETER)
 940                 return sd_bus_error_set(error, BUS_ERROR_SESSION_BUSY, "Already occupied by a session");
 941
 942         if (hashmap_size(m->sessions) >= m->sessions_max)
 943                 return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED,
 944                                          "Maximum number of sessions (%" PRIu64 ") reached, refusing further sessions.",
 945                                          m->sessions_max);
 946
 947         (void) audit_session_from_pid(leader.pid, &audit_id);
 948         if (audit_session_is_valid(audit_id)) {
 949                 /* Keep our session IDs and the audit session IDs in sync */
 950
 951                 if (asprintf(&id, "%"PRIu32, audit_id) < 0)
 952                         return -ENOMEM;
 953
 954                 /* Wut? There's already a session by this name and we didn't find it above? Weird, then let's
 955                  * not trust the audit data and let's better register a new ID */
 956                 if (hashmap_contains(m->sessions, id)) {
 957                         log_warning("Existing logind session ID %s used by new audit session, ignoring.", id);
 958                         audit_id = AUDIT_SESSION_INVALID;
 959                         id = mfree(id);
 960                 }
 961         }
 962
 963         if (!id) {
 964                 do {
 965                         id = mfree(id);
 966
 967                         if (asprintf(&id, "c%" PRIu64, ++m->session_counter) < 0)
 968                                 return -ENOMEM;
 969
 970                 } while (hashmap_contains(m->sessions, id));
 971         }
 972
 973         /* The generated names should not clash with 'auto' or 'self' */
 974         assert(!SESSION_IS_SELF(id));
 975         assert(!SESSION_IS_AUTO(id));
 976
 977         /* If we are not watching utmp already, try again */
 978         manager_reconnect_utmp(m);
 979
 980         r = manager_add_user_by_uid(m, uid, &user);
 981         if (r < 0)
 982                 goto fail;
 983
 984         r = manager_add_session(m, id, &session);
 985         if (r < 0)
 986                 goto fail;
 987
 988         session_set_user(session, user);
 989         r = session_set_leader_consume(session, TAKE_PIDREF(leader));
 990         if (r < 0)
 991                 goto fail;
 992
 993         session->original_type = session->type = t;
 994         session->remote = remote;
 995         session->vtnr = vtnr;
 996         session->class = c;
 997
 998         /* Once the first session that is of a pinning class shows up we'll change the GC mode for the user
 999          * from USER_GC_BY_ANY to USER_GC_BY_PIN, so that the user goes away once the last pinning session
1000          * goes away. Background: we want that user@.service – when started manually – remains around (which
1001          * itself is a non-pinning session), but gets stopped when the last pinning session goes away. */
1002
1003         if (SESSION_CLASS_PIN_USER(c))
1004                 user->gc_mode = USER_GC_BY_PIN;
1005
1006         if (!isempty(tty)) {
1007                 session->tty = strdup(tty);
1008                 if (!session->tty) {
1009                         r = -ENOMEM;
1010                         goto fail;
1011                 }
1012
1013                 session->tty_validity = TTY_FROM_PAM;
1014         }
1015
1016         if (!isempty(display)) {
1017                 session->display = strdup(display);
1018                 if (!session->display) {
1019                         r = -ENOMEM;
1020                         goto fail;
1021                 }
1022         }
1023
1024         if (!isempty(remote_user)) {
1025                 session->remote_user = strdup(remote_user);
1026                 if (!session->remote_user) {
1027                         r = -ENOMEM;
1028                         goto fail;
1029                 }
1030         }
1031
1032         if (!isempty(remote_host)) {
1033                 session->remote_host = strdup(remote_host);
1034                 if (!session->remote_host) {
1035                         r = -ENOMEM;
1036                         goto fail;
1037                 }
1038         }
1039
1040         if (!isempty(service)) {
1041                 session->service = strdup(service);
1042                 if (!session->service) {
1043                         r = -ENOMEM;
1044                         goto fail;
1045                 }
1046         }
1047
1048         if (!isempty(desktop)) {
1049                 session->desktop = strdup(desktop);
1050                 if (!session->desktop) {
1051                         r = -ENOMEM;
1052                         goto fail;
1053                 }
1054         }
1055
1056         if (seat) {
1057                 r = seat_attach_session(seat, session);
1058                 if (r < 0)
1059                         goto fail;
1060         }
1061
1062         r = sd_bus_message_enter_container(message, 'a', "(sv)");
1063         if (r < 0)
1064                 goto fail;
1065
1066         r = session_start(session, message, error);
1067         if (r < 0)
1068                 goto fail;
1069
1070         r = sd_bus_message_exit_container(message);
1071         if (r < 0)
1072                 goto fail;
1073
1074         session->create_message = sd_bus_message_ref(message);
1075
1076         /* Now call into session_send_create_reply(), which will reply to this method call for us. Or it
1077          * won't – in case we just spawned a session scope and/or user service manager, and they aren't ready
1078          * yet. We'll call session_create_reply() again once the session scope or the user service manager is
1079          * ready, where the function will check again if a reply is then ready to be sent, and then do so if
1080          * all is complete - or wait again. */
1081         r = session_send_create_reply(session, /* error= */ NULL);
1082         if (r < 0)
1083                 return r;
1084
1085         return 1;
1086
1087 fail:
1088         if (session)
1089                 session_add_to_gc_queue(session);
1090
1091         if (user)
1092                 user_add_to_gc_queue(user);
1093
1094         return r;
1095 }
1096
1097 static int method_create_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1098         const char *service, *type, *class, *cseat, *tty, *display, *remote_user, *remote_host, *desktop;
1099         pid_t leader;
1100         uid_t uid;
1101         int remote;
1102         uint32_t vtnr = 0;
1103         int r;
1104
1105         assert(message);
1106
1107         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
1108         assert_cc(sizeof(uid_t) == sizeof(uint32_t));
1109
1110         r = sd_bus_message_read(message,
1111                                 "uusssssussbss",
1112                                 &uid,
1113                                 &leader,
1114                                 &service,
1115                                 &type,
1116                                 &class,
1117                                 &desktop,
1118                                 &cseat,
1119                                 &vtnr,
1120                                 &tty,
1121                                 &display,
1122                                 &remote,
1123                                 &remote_user,
1124                                 &remote_host);
1125         if (r < 0)
1126                 return r;
1127
1128         return create_session(
1129                         message,
1130                         userdata,
1131                         error,
1132                         uid,
1133                         leader,
1134                         /* pidfd = */ -EBADF,
1135                         service,
1136                         type,
1137                         class,
1138                         desktop,
1139                         cseat,
1140                         vtnr,
1141                         tty,
1142                         display,
1143                         remote,
1144                         remote_user,
1145                         remote_host,
1146                         /* flags = */ 0);
1147 }
1148
1149 static int method_create_session_pidfd(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1150         const char *service, *type, *class, *cseat, *tty, *display, *remote_user, *remote_host, *desktop;
1151         int leaderfd = -EBADF;
1152         uid_t uid;
1153         int remote;
1154         uint32_t vtnr = 0;
1155         uint64_t flags;
1156         int r;
1157
1158         r = sd_bus_message_read(message,
1159                                 "uhsssssussbsst",
1160                                 &uid,
1161                                 &leaderfd,
1162                                 &service,
1163                                 &type,
1164                                 &class,
1165                                 &desktop,
1166                                 &cseat,
1167                                 &vtnr,
1168                                 &tty,
1169                                 &display,
1170                                 &remote,
1171                                 &remote_user,
1172                                 &remote_host,
1173                                 &flags);
1174         if (r < 0)
1175                 return r;
1176
1177         return create_session(
1178                         message,
1179                         userdata,
1180                         error,
1181                         uid,
1182                         /* pid = */ 0,
1183                         leaderfd,
1184                         service,
1185                         type,
1186                         class,
1187                         desktop,
1188                         cseat,
1189                         vtnr,
1190                         tty,
1191                         display,
1192                         remote,
1193                         remote_user,
1194                         remote_host,
1195                         flags);
1196 }
1197
1198 static int method_release_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1199         Manager *m = ASSERT_PTR(userdata);
1200         Session *session;
1201         const char *name;
1202         int r;
1203
1204         assert(message);
1205
1206         r = sd_bus_message_read(message, "s", &name);
1207         if (r < 0)
1208                 return r;
1209
1210         r = manager_get_session_from_creds(m, message, name, error, &session);
1211         if (r < 0)
1212                 return r;
1213
1214         r = session_release(session);
1215         if (r < 0)
1216                 return r;
1217
1218         return sd_bus_reply_method_return(message, NULL);
1219 }
1220
1221 static int method_activate_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1222         Manager *m = ASSERT_PTR(userdata);
1223         Session *session;
1224         const char *name;
1225         int r;
1226
1227         assert(message);
1228
1229         r = sd_bus_message_read(message, "s", &name);
1230         if (r < 0)
1231                 return r;
1232
1233         r = manager_get_session_from_creds(m, message, name, error, &session);
1234         if (r < 0)
1235                 return r;
1236
1237         /* PolicyKit is done by bus_session_method_activate() */
1238
1239         return bus_session_method_activate(message, session, error);
1240 }
1241
1242 static int method_activate_session_on_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1243         const char *session_name, *seat_name;
1244         Manager *m = ASSERT_PTR(userdata);
1245         Session *session;
1246         Seat *seat;
1247         int r;
1248
1249         assert(message);
1250
1251         /* Same as ActivateSession() but refuses to work if the seat doesn't match */
1252
1253         r = sd_bus_message_read(message, "ss", &session_name, &seat_name);
1254         if (r < 0)
1255                 return r;
1256
1257         r = manager_get_session_from_creds(m, message, session_name, error, &session);
1258         if (r < 0)
1259                 return r;
1260
1261         r = manager_get_seat_from_creds(m, message, seat_name, error, &seat);
1262         if (r < 0)
1263                 return r;
1264
1265         if (session->seat != seat)
1266                 return sd_bus_error_setf(error, BUS_ERROR_SESSION_NOT_ON_SEAT,
1267                                          "Session %s not on seat %s", session_name, seat_name);
1268
1269         r = check_polkit_chvt(message, m, error);
1270         if (r < 0)
1271                 return r;
1272         if (r == 0)
1273                 return 1; /* Will call us back */
1274
1275         r = session_activate(session);
1276         if (r < 0)
1277                 return r;
1278
1279         return sd_bus_reply_method_return(message, NULL);
1280 }
1281
1282 static int method_lock_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1283         Manager *m = ASSERT_PTR(userdata);
1284         Session *session;
1285         const char *name;
1286         int r;
1287
1288         assert(message);
1289
1290         r = sd_bus_message_read(message, "s", &name);
1291         if (r < 0)
1292                 return r;
1293
1294         r = manager_get_session_from_creds(m, message, name, error, &session);
1295         if (r < 0)
1296                 return r;
1297
1298         return bus_session_method_lock(message, session, error);
1299 }
1300
1301 static int method_lock_sessions(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1302         Manager *m = ASSERT_PTR(userdata);
1303         int r;
1304
1305         assert(message);
1306
1307         r = bus_verify_polkit_async(
1308                         message,
1309                         "org.freedesktop.login1.lock-sessions",
1310                         /* details= */ NULL,
1311                         &m->polkit_registry,
1312                         error);
1313         if (r < 0)
1314                 return r;
1315         if (r == 0)
1316                 return 1; /* Will call us back */
1317
1318         r = session_send_lock_all(m, streq(sd_bus_message_get_member(message), "LockSessions"));
1319         if (r < 0)
1320                 return r;
1321
1322         return sd_bus_reply_method_return(message, NULL);
1323 }
1324
1325 static int method_kill_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1326         const char *name;
1327         Manager *m = ASSERT_PTR(userdata);
1328         Session *session;
1329         int r;
1330
1331         assert(message);
1332
1333         r = sd_bus_message_read(message, "s", &name);
1334         if (r < 0)
1335                 return r;
1336
1337         r = manager_get_session_from_creds(m, message, name, error, &session);
1338         if (r < 0)
1339                 return r;
1340
1341         return bus_session_method_kill(message, session, error);
1342 }
1343
1344 static int method_kill_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1345         Manager *m = ASSERT_PTR(userdata);
1346         uint32_t uid;
1347         User *user;
1348         int r;
1349
1350         assert(message);
1351
1352         r = sd_bus_message_read(message, "u", &uid);
1353         if (r < 0)
1354                 return r;
1355
1356         r = manager_get_user_from_creds(m, message, uid, error, &user);
1357         if (r < 0)
1358                 return r;
1359
1360         return bus_user_method_kill(message, user, error);
1361 }
1362
1363 static int method_terminate_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1364         Manager *m = ASSERT_PTR(userdata);
1365         const char *name;
1366         Session *session;
1367         int r;
1368
1369         assert(message);
1370
1371         r = sd_bus_message_read(message, "s", &name);
1372         if (r < 0)
1373                 return r;
1374
1375         r = manager_get_session_from_creds(m, message, name, error, &session);
1376         if (r < 0)
1377                 return r;
1378
1379         return bus_session_method_terminate(message, session, error);
1380 }
1381
1382 static int method_terminate_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1383         Manager *m = ASSERT_PTR(userdata);
1384         uint32_t uid;
1385         User *user;
1386         int r;
1387
1388         assert(message);
1389
1390         r = sd_bus_message_read(message, "u", &uid);
1391         if (r < 0)
1392                 return r;
1393
1394         r = manager_get_user_from_creds(m, message, uid, error, &user);
1395         if (r < 0)
1396                 return r;
1397
1398         return bus_user_method_terminate(message, user, error);
1399 }
1400
1401 static int method_terminate_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1402         Manager *m = ASSERT_PTR(userdata);
1403         const char *name;
1404         Seat *seat;
1405         int r;
1406
1407         assert(message);
1408
1409         r = sd_bus_message_read(message, "s", &name);
1410         if (r < 0)
1411                 return r;
1412
1413         r = manager_get_seat_from_creds(m, message, name, error, &seat);
1414         if (r < 0)
1415                 return r;
1416
1417         return bus_seat_method_terminate(message, seat, error);
1418 }
1419
1420 static int method_set_user_linger(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1421         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
1422         _cleanup_free_ struct passwd *pw = NULL;
1423         _cleanup_free_ char *cc = NULL;
1424         Manager *m = ASSERT_PTR(userdata);
1425         int r, b, interactive;
1426         const char *path;
1427         uint32_t uid, auth_uid;
1428
1429         assert(message);
1430
1431         r = sd_bus_message_read(message, "ubb", &uid, &b, &interactive);
1432         if (r < 0)
1433                 return r;
1434
1435         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID |
1436                                                SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds);
1437         if (r < 0)
1438                 return r;
1439
1440         if (!uid_is_valid(uid)) {
1441                 /* Note that we get the owner UID of the session or user unit,
1442                  * not the actual client UID here! */
1443                 r = sd_bus_creds_get_owner_uid(creds, &uid);
1444                 if (r < 0)
1445                         return r;
1446         }
1447
1448         /* owner_uid is racy, so for authorization we must use euid */
1449         r = sd_bus_creds_get_euid(creds, &auth_uid);
1450         if (r < 0)
1451                 return r;
1452
1453         r = getpwuid_malloc(uid, &pw);
1454         if (r < 0)
1455                 return r;
1456
1457         r = bus_verify_polkit_async_full(
1458                         message,
1459                         uid == auth_uid ? "org.freedesktop.login1.set-self-linger" :
1460                                           "org.freedesktop.login1.set-user-linger",
1461                         /* details= */ NULL,
1462                         interactive,
1463                         /* good_user= */ UID_INVALID,
1464                         &m->polkit_registry,
1465                         error);
1466         if (r < 0)
1467                 return r;
1468         if (r == 0)
1469                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1470
1471         (void) mkdir_p_label("/var/lib/systemd", 0755);
1472         r = mkdir_safe_label("/var/lib/systemd/linger", 0755, 0, 0, MKDIR_WARN_MODE);
1473         if (r < 0)
1474                 return r;
1475
1476         cc = cescape(pw->pw_name);
1477         if (!cc)
1478                 return -ENOMEM;
1479
1480         path = strjoina("/var/lib/systemd/linger/", cc);
1481         if (b) {
1482                 User *u;
1483
1484                 r = touch(path);
1485                 if (r < 0)
1486                         return r;
1487
1488                 if (manager_add_user_by_uid(m, uid, &u) >= 0)
1489                         user_start(u);
1490
1491         } else {
1492                 User *u;
1493
1494                 r = unlink(path);
1495                 if (r < 0 && errno != ENOENT)
1496                         return -errno;
1497
1498                 u = hashmap_get(m->users, UID_TO_PTR(uid));
1499                 if (u)
1500                         user_add_to_gc_queue(u);
1501         }
1502
1503         return sd_bus_reply_method_return(message, NULL);
1504 }
1505
1506 static int trigger_device(Manager *m, sd_device *parent) {
1507         _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL;
1508         int r;
1509
1510         assert(m);
1511
1512         r = sd_device_enumerator_new(&e);
1513         if (r < 0)
1514                 return r;
1515
1516         r = sd_device_enumerator_allow_uninitialized(e);
1517         if (r < 0)
1518                 return r;
1519
1520         if (parent) {
1521                 r = sd_device_enumerator_add_match_parent(e, parent);
1522                 if (r < 0)
1523                         return r;
1524         }
1525
1526         FOREACH_DEVICE(e, d) {
1527                 r = sd_device_trigger(d, SD_DEVICE_CHANGE);
1528                 if (r < 0)
1529                         log_device_debug_errno(d, r, "Failed to trigger device, ignoring: %m");
1530         }
1531
1532         return 0;
1533 }
1534
1535 static int attach_device(Manager *m, const char *seat, const char *sysfs, sd_bus_error *error) {
1536         _cleanup_(sd_device_unrefp) sd_device *d = NULL;
1537         _cleanup_free_ char *rule = NULL, *file = NULL;
1538         const char *id_for_seat;
1539         int r;
1540
1541         assert(m);
1542         assert(seat);
1543         assert(sysfs);
1544
1545         r = sd_device_new_from_syspath(&d, sysfs);
1546         if (r < 0)
1547                 return sd_bus_error_set_errnof(error, r, "Failed to open device '%s': %m", sysfs);
1548
1549         if (sd_device_has_current_tag(d, "seat") <= 0)
1550                 return sd_bus_error_set_errnof(error, ENODEV, "Device '%s' lacks 'seat' udev tag.", sysfs);
1551
1552         if (sd_device_get_property_value(d, "ID_FOR_SEAT", &id_for_seat) < 0)
1553                 return sd_bus_error_set_errnof(error, ENODEV, "Device '%s' lacks 'ID_FOR_SEAT' udev property.", sysfs);
1554
1555         if (asprintf(&file, "/etc/udev/rules.d/72-seat-%s.rules", id_for_seat) < 0)
1556                 return -ENOMEM;
1557
1558         if (asprintf(&rule, "TAG==\"seat\", ENV{ID_FOR_SEAT}==\"%s\", ENV{ID_SEAT}=\"%s\"", id_for_seat, seat) < 0)
1559                 return -ENOMEM;
1560
1561         (void) mkdir_p_label("/etc/udev/rules.d", 0755);
1562         r = write_string_file_atomic_label(file, rule);
1563         if (r < 0)
1564                 return r;
1565
1566         return trigger_device(m, d);
1567 }
1568
1569 static int flush_devices(Manager *m) {
1570         _cleanup_closedir_ DIR *d = NULL;
1571
1572         assert(m);
1573
1574         d = opendir("/etc/udev/rules.d");
1575         if (!d) {
1576                 if (errno != ENOENT)
1577                         log_warning_errno(errno, "Failed to open /etc/udev/rules.d: %m");
1578         } else
1579                 FOREACH_DIRENT_ALL(de, d, break) {
1580                         if (!dirent_is_file(de))
1581                                 continue;
1582
1583                         if (!startswith(de->d_name, "72-seat-"))
1584                                 continue;
1585
1586                         if (!endswith(de->d_name, ".rules"))
1587                                 continue;
1588
1589                         if (unlinkat(dirfd(d), de->d_name, 0) < 0)
1590                                 log_warning_errno(errno, "Failed to unlink %s: %m", de->d_name);
1591                 }
1592
1593         return trigger_device(m, NULL);
1594 }
1595
1596 static int method_attach_device(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1597         const char *sysfs, *seat;
1598         Manager *m = ASSERT_PTR(userdata);
1599         int interactive, r;
1600
1601         assert(message);
1602
1603         r = sd_bus_message_read(message, "ssb", &seat, &sysfs, &interactive);
1604         if (r < 0)
1605                 return r;
1606
1607         if (!path_is_normalized(sysfs))
1608                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not normalized", sysfs);
1609         if (!path_startswith(sysfs, "/sys"))
1610                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not in /sys", sysfs);
1611
1612         if (SEAT_IS_SELF(seat) || SEAT_IS_AUTO(seat)) {
1613                 Seat *found;
1614
1615                 r = manager_get_seat_from_creds(m, message, seat, error, &found);
1616                 if (r < 0)
1617                         return r;
1618
1619                 seat = found->id;
1620
1621         } else if (!seat_name_is_valid(seat)) /* Note that a seat does not have to exist yet for this operation to succeed */
1622                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Seat name %s is not valid", seat);
1623
1624         r = bus_verify_polkit_async_full(
1625                         message,
1626                         "org.freedesktop.login1.attach-device",
1627                         /* details= */ NULL,
1628                         interactive,
1629                         /* good_user= */ UID_INVALID,
1630                         &m->polkit_registry,
1631                         error);
1632         if (r < 0)
1633                 return r;
1634         if (r == 0)
1635                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1636
1637         r = attach_device(m, seat, sysfs, error);
1638         if (r < 0)
1639                 return r;
1640
1641         return sd_bus_reply_method_return(message, NULL);
1642 }
1643
1644 static int method_flush_devices(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1645         Manager *m = ASSERT_PTR(userdata);
1646         int interactive, r;
1647
1648         assert(message);
1649
1650         r = sd_bus_message_read(message, "b", &interactive);
1651         if (r < 0)
1652                 return r;
1653
1654         r = bus_verify_polkit_async_full(
1655                         message,
1656                         "org.freedesktop.login1.flush-devices",
1657                         /* details= */ NULL,
1658                         interactive,
1659                         /* good_user= */ UID_INVALID,
1660                         &m->polkit_registry,
1661                         error);
1662         if (r < 0)
1663                 return r;
1664         if (r == 0)
1665                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1666
1667         r = flush_devices(m);
1668         if (r < 0)
1669                 return r;
1670
1671         return sd_bus_reply_method_return(message, NULL);
1672 }
1673
1674 static int have_multiple_sessions(
1675                 Manager *m,
1676                 uid_t uid) {
1677
1678         Session *session;
1679
1680         assert(m);
1681
1682         /* Check for other users' sessions. Greeter sessions do not
1683          * count, and non-login sessions do not count either. */
1684         HASHMAP_FOREACH(session, m->sessions)
1685                 if (session->class == SESSION_USER &&
1686                     session->user->user_record->uid != uid)
1687                         return true;
1688
1689         return false;
1690 }
1691
1692 static int bus_manager_log_shutdown(
1693                 Manager *m,
1694                 const HandleActionData *a) {
1695         assert(m);
1696         assert(a);
1697
1698         const char *message = a->message ?: "System is shutting down";
1699         const char *log_verb = a->log_verb ? strjoina("SHUTDOWN=", a->log_verb) : NULL;
1700
1701         return log_struct(LOG_NOTICE,
1702                           "MESSAGE_ID=%s", a->message_id ?: SD_MESSAGE_SHUTDOWN_STR,
1703                           LOG_MESSAGE("%s%s%s%s.",
1704                                       message,
1705                                       m->wall_message ? " (" : "",
1706                                       strempty(m->wall_message),
1707                                       m->wall_message ? ")" : ""),
1708                           log_verb);
1709 }
1710
1711 static int lid_switch_ignore_handler(sd_event_source *e, uint64_t usec, void *userdata) {
1712         Manager *m = ASSERT_PTR(userdata);
1713
1714         assert(e);
1715
1716         m->lid_switch_ignore_event_source = sd_event_source_unref(m->lid_switch_ignore_event_source);
1717         return 0;
1718 }
1719
1720 int manager_set_lid_switch_ignore(Manager *m, usec_t until) {
1721         int r;
1722
1723         assert(m);
1724
1725         if (until <= now(CLOCK_MONOTONIC))
1726                 return 0;
1727
1728         /* We want to ignore the lid switch for a while after each
1729          * suspend, and after boot-up. Hence let's install a timer for
1730          * this. As long as the event source exists we ignore the lid
1731          * switch. */
1732
1733         if (m->lid_switch_ignore_event_source) {
1734                 usec_t u;
1735
1736                 r = sd_event_source_get_time(m->lid_switch_ignore_event_source, &u);
1737                 if (r < 0)
1738                         return r;
1739
1740                 if (until <= u)
1741                         return 0;
1742
1743                 r = sd_event_source_set_time(m->lid_switch_ignore_event_source, until);
1744         } else
1745                 r = sd_event_add_time(
1746                                 m->event,
1747                                 &m->lid_switch_ignore_event_source,
1748                                 CLOCK_MONOTONIC,
1749                                 until, 0,
1750                                 lid_switch_ignore_handler, m);
1751
1752         return r;
1753 }
1754
1755 static int send_prepare_for(Manager *m, const HandleActionData *a, bool _active) {
1756         int k = 0, r, active = _active;
1757
1758         assert(m);
1759         assert(a);
1760         assert(IN_SET(a->inhibit_what, INHIBIT_SHUTDOWN, INHIBIT_SLEEP));
1761
1762         /* We need to send both old and new signal for backward compatibility. The newer one allows clients
1763          * to know which type of reboot is going to happen, as they might be doing different actions (e.g.:
1764          * on soft-reboot), and it is sent first, so that clients know that if they receive the old one
1765          * first then they don't have to wait for the new one, as it means it's not supported. So, do not
1766          * change the order here, as it is an API. */
1767         if (a->inhibit_what == INHIBIT_SHUTDOWN) {
1768                 k = sd_bus_emit_signal(m->bus,
1769                                        "/org/freedesktop/login1",
1770                                        "org.freedesktop.login1.Manager",
1771                                        "PrepareForShutdownWithMetadata",
1772                                        "ba{sv}",
1773                                        active,
1774                                        1,
1775                                        "type",
1776                                        "s",
1777                                        handle_action_to_string(a->handle));
1778                 if (k < 0)
1779                         log_debug_errno(k, "Failed to emit PrepareForShutdownWithMetadata(): %m");
1780         }
1781
1782         r = sd_bus_emit_signal(m->bus,
1783                                "/org/freedesktop/login1",
1784                                "org.freedesktop.login1.Manager",
1785                                a->inhibit_what == INHIBIT_SHUTDOWN ? "PrepareForShutdown" : "PrepareForSleep",
1786                                "b",
1787                                active);
1788         if (r < 0)
1789                 log_debug_errno(r, "Failed to emit PrepareForShutdown(): %m");
1790
1791         return RET_GATHER(k, r);
1792 }
1793
1794 static int execute_shutdown_or_sleep(
1795                 Manager *m,
1796                 const HandleActionData *a,
1797                 sd_bus_error *error) {
1798
1799         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1800         const char *p;
1801         int r;
1802
1803         assert(m);
1804         assert(!m->action_job);
1805         assert(a);
1806
1807         if (a->inhibit_what == INHIBIT_SHUTDOWN)
1808                 bus_manager_log_shutdown(m, a);
1809
1810         r = bus_call_method(
1811                         m->bus,
1812                         bus_systemd_mgr,
1813                         "StartUnit",
1814                         error,
1815                         &reply,
1816                         "ss", a->target, "replace-irreversibly");
1817         if (r < 0)
1818                 goto error;
1819
1820         r = sd_bus_message_read(reply, "o", &p);
1821         if (r < 0)
1822                 goto error;
1823
1824         m->action_job = strdup(p);
1825         if (!m->action_job) {
1826                 r = -ENOMEM;
1827                 goto error;
1828         }
1829
1830         m->delayed_action = a;
1831
1832         /* Make sure the lid switch is ignored for a while */
1833         manager_set_lid_switch_ignore(m, usec_add(now(CLOCK_MONOTONIC), m->holdoff_timeout_usec));
1834
1835         return 0;
1836
1837 error:
1838         /* Tell people that they now may take a lock again */
1839         (void) send_prepare_for(m, a, false);
1840
1841         return r;
1842 }
1843
1844 int manager_dispatch_delayed(Manager *manager, bool timeout) {
1845         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1846         Inhibitor *offending = NULL;
1847         int r;
1848
1849         assert(manager);
1850
1851         if (!manager->delayed_action || manager->action_job)
1852                 return 0;
1853
1854         if (manager_is_inhibited(manager, manager->delayed_action->inhibit_what, INHIBIT_DELAY, NULL, false, false, 0, &offending)) {
1855                 _cleanup_free_ char *comm = NULL, *u = NULL;
1856
1857                 if (!timeout)
1858                         return 0;
1859
1860                 (void) pidref_get_comm(&offending->pid, &comm);
1861                 u = uid_to_name(offending->uid);
1862
1863                 log_notice("Delay lock is active (UID "UID_FMT"/%s, PID "PID_FMT"/%s) but inhibitor timeout is reached.",
1864                            offending->uid, strna(u),
1865                            offending->pid.pid, strna(comm));
1866         }
1867
1868         /* Actually do the operation */
1869         r = execute_shutdown_or_sleep(manager, manager->delayed_action, &error);
1870         if (r < 0) {
1871                 log_warning("Error during inhibitor-delayed operation (already returned success to client): %s",
1872                             bus_error_message(&error, r));
1873
1874                 manager->delayed_action = NULL;
1875         }
1876
1877         return 1; /* We did some work. */
1878 }
1879
1880 static int manager_inhibit_timeout_handler(
1881                         sd_event_source *s,
1882                         uint64_t usec,
1883                         void *userdata) {
1884
1885         Manager *manager = ASSERT_PTR(userdata);
1886
1887         assert(manager->inhibit_timeout_source == s);
1888
1889         return manager_dispatch_delayed(manager, true);
1890 }
1891
1892 static int delay_shutdown_or_sleep(
1893                 Manager *m,
1894                 const HandleActionData *a) {
1895
1896         int r;
1897
1898         assert(m);
1899         assert(a);
1900
1901         if (m->inhibit_timeout_source) {
1902                 r = sd_event_source_set_time_relative(m->inhibit_timeout_source, m->inhibit_delay_max);
1903                 if (r < 0)
1904                         return log_error_errno(r, "sd_event_source_set_time_relative() failed: %m");
1905
1906                 r = sd_event_source_set_enabled(m->inhibit_timeout_source, SD_EVENT_ONESHOT);
1907                 if (r < 0)
1908                         return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
1909         } else {
1910                 r = sd_event_add_time_relative(
1911                                 m->event,
1912                                 &m->inhibit_timeout_source,
1913                                 CLOCK_MONOTONIC, m->inhibit_delay_max, 0,
1914                                 manager_inhibit_timeout_handler, m);
1915                 if (r < 0)
1916                         return r;
1917         }
1918
1919         m->delayed_action = a;
1920
1921         return 0;
1922 }
1923
1924 int bus_manager_shutdown_or_sleep_now_or_later(
1925                 Manager *m,
1926                 const HandleActionData *a,
1927                 sd_bus_error *error) {
1928
1929         _cleanup_free_ char *load_state = NULL;
1930         bool delayed;
1931         int r;
1932
1933         assert(m);
1934         assert(a);
1935         assert(!m->action_job);
1936
1937         r = unit_load_state(m->bus, a->target, &load_state);
1938         if (r < 0)
1939                 return r;
1940
1941         if (!streq(load_state, "loaded"))
1942                 return log_notice_errno(SYNTHETIC_ERRNO(EACCES),
1943                                         "Unit %s is %s, refusing operation.",
1944                                         a->target, load_state);
1945
1946         /* Tell everybody to prepare for shutdown/sleep */
1947         (void) send_prepare_for(m, a, true);
1948
1949         delayed =
1950                 m->inhibit_delay_max > 0 &&
1951                 manager_is_inhibited(m, a->inhibit_what, INHIBIT_DELAY, NULL, false, false, 0, NULL);
1952
1953         if (delayed)
1954                 /* Shutdown is delayed, keep in mind what we
1955                  * want to do, and start a timeout */
1956                 r = delay_shutdown_or_sleep(m, a);
1957         else
1958                 /* Shutdown is not delayed, execute it
1959                  * immediately */
1960                 r = execute_shutdown_or_sleep(m, a, error);
1961
1962         return r;
1963 }
1964
1965 static int verify_shutdown_creds(
1966                 Manager *m,
1967                 sd_bus_message *message,
1968                 const HandleActionData *a,
1969                 uint64_t flags,
1970                 sd_bus_error *error) {
1971
1972         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
1973         bool multiple_sessions, blocked, interactive;
1974         uid_t uid;
1975         int r;
1976
1977         assert(m);
1978         assert(a);
1979         assert(message);
1980
1981         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
1982         if (r < 0)
1983                 return r;
1984
1985         r = sd_bus_creds_get_euid(creds, &uid);
1986         if (r < 0)
1987                 return r;
1988
1989         r = have_multiple_sessions(m, uid);
1990         if (r < 0)
1991                 return r;
1992
1993         multiple_sessions = r > 0;
1994         blocked = manager_is_inhibited(m, a->inhibit_what, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
1995         interactive = flags & SD_LOGIND_INTERACTIVE;
1996
1997         if (multiple_sessions) {
1998                 r = bus_verify_polkit_async_full(
1999                                 message,
2000                                 a->polkit_action_multiple_sessions,
2001                                 /* details= */ NULL,
2002                                 interactive,
2003                                 /* good_user= */ UID_INVALID,
2004                                 &m->polkit_registry,
2005                                 error);
2006                 if (r < 0)
2007                         return r;
2008                 if (r == 0)
2009                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2010         }
2011
2012         if (blocked) {
2013                 /* We don't check polkit for root here, because you can't be more privileged than root */
2014                 if (uid == 0 && (flags & SD_LOGIND_ROOT_CHECK_INHIBITORS))
2015                         return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED,
2016                                                  "Access denied to root due to active block inhibitor");
2017
2018                 r = bus_verify_polkit_async_full(
2019                                 message,
2020                                 a->polkit_action_ignore_inhibit,
2021                                 /* details= */ NULL,
2022                                 interactive,
2023                                 /* good_user= */ UID_INVALID,
2024                                 &m->polkit_registry,
2025                                 error);
2026                 if (r < 0)
2027                         return r;
2028                 if (r == 0)
2029                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2030         }
2031
2032         if (!multiple_sessions && !blocked) {
2033                 r = bus_verify_polkit_async_full(
2034                                 message,
2035                                 a->polkit_action,
2036                                 /* details= */ NULL,
2037                                 interactive,
2038                                 /* good_user= */ UID_INVALID,
2039                                 &m->polkit_registry,
2040                                 error);
2041                 if (r < 0)
2042                         return r;
2043                 if (r == 0)
2044                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2045         }
2046
2047         return 0;
2048 }
2049
2050 static int setup_wall_message_timer(Manager *m, sd_bus_message* message) {
2051         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2052         int r;
2053
2054         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
2055         if (r >= 0) {
2056                 const char *tty = NULL;
2057
2058                 (void) sd_bus_creds_get_uid(creds, &m->scheduled_shutdown_uid);
2059                 (void) sd_bus_creds_get_tty(creds, &tty);
2060
2061                 r = free_and_strdup(&m->scheduled_shutdown_tty, tty);
2062                 if (r < 0)
2063                         return log_oom();
2064         }
2065
2066         r = manager_setup_wall_message_timer(m);
2067         if (r < 0)
2068                 return r;
2069
2070         return 0;
2071 }
2072
2073 static int method_do_shutdown_or_sleep(
2074                 Manager *m,
2075                 sd_bus_message *message,
2076                 HandleAction action,
2077                 bool with_flags,
2078                 sd_bus_error *error) {
2079
2080         uint64_t flags;
2081         int r;
2082
2083         assert(m);
2084         assert(message);
2085         assert(HANDLE_ACTION_IS_SHUTDOWN(action) || HANDLE_ACTION_IS_SLEEP(action));
2086
2087         if (with_flags) {
2088                 /* New style method: with flags parameter (and interactive bool in the bus message header) */
2089                 r = sd_bus_message_read(message, "t", &flags);
2090                 if (r < 0)
2091                         return r;
2092                 if ((flags & ~SD_LOGIND_SHUTDOWN_AND_SLEEP_FLAGS_PUBLIC) != 0)
2093                         return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS,
2094                                                 "Invalid flags parameter");
2095
2096                 if (FLAGS_SET(flags, (SD_LOGIND_REBOOT_VIA_KEXEC|SD_LOGIND_SOFT_REBOOT)))
2097                         return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS,
2098                                                 "Both reboot via kexec and soft reboot selected, which is not supported");
2099
2100                 if (action != HANDLE_REBOOT) {
2101                         if (flags & SD_LOGIND_REBOOT_VIA_KEXEC)
2102                                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS,
2103                                                         "Reboot via kexec option is only applicable with reboot operations");
2104                         if ((flags & SD_LOGIND_SOFT_REBOOT) || (flags & SD_LOGIND_SOFT_REBOOT_IF_NEXTROOT_SET_UP))
2105                                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS,
2106                                                         "Soft reboot option is only applicable with reboot operations");
2107                 }
2108         } else {
2109                 /* Old style method: no flags parameter, but interactive bool passed as boolean in
2110                  * payload. Let's convert this argument to the new-style flags parameter for our internal
2111                  * use. */
2112                 int interactive;
2113
2114                 r = sd_bus_message_read(message, "b", &interactive);
2115                 if (r < 0)
2116                         return r;
2117
2118                 flags = interactive ? SD_LOGIND_INTERACTIVE : 0;
2119         }
2120
2121         const HandleActionData *a = NULL;
2122
2123         if ((flags & SD_LOGIND_SOFT_REBOOT) ||
2124             ((flags & SD_LOGIND_SOFT_REBOOT_IF_NEXTROOT_SET_UP) && path_is_os_tree("/run/nextroot") > 0))
2125                 a = handle_action_lookup(HANDLE_SOFT_REBOOT);
2126         else if ((flags & SD_LOGIND_REBOOT_VIA_KEXEC) && kexec_loaded())
2127                 a = handle_action_lookup(HANDLE_KEXEC);
2128
2129         if (action == HANDLE_SLEEP) {
2130                 HandleAction selected;
2131
2132                 selected = handle_action_sleep_select(m);
2133                 if (selected < 0)
2134                         return sd_bus_error_set(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
2135                                                 "None of the configured sleep operations are supported");
2136
2137                 assert_se(a = handle_action_lookup(selected));
2138
2139         } else if (HANDLE_ACTION_IS_SLEEP(action)) {
2140                 SleepSupport support;
2141
2142                 assert_se(a = handle_action_lookup(action));
2143
2144                 assert(a->sleep_operation >= 0);
2145                 assert(a->sleep_operation < _SLEEP_OPERATION_MAX);
2146
2147                 r = sleep_supported_full(a->sleep_operation, &support);
2148                 if (r < 0)
2149                         return r;
2150                 if (r == 0)
2151                         switch (support) {
2152
2153                         case SLEEP_DISABLED:
2154                                 return sd_bus_error_setf(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
2155                                                          "Sleep verb '%s' is disabled by config",
2156                                                          sleep_operation_to_string(a->sleep_operation));
2157
2158                         case SLEEP_NOT_CONFIGURED:
2159                         case SLEEP_STATE_OR_MODE_NOT_SUPPORTED:
2160                         case SLEEP_ALARM_NOT_SUPPORTED:
2161                                 return sd_bus_error_setf(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
2162                                                          "Sleep verb '%s' is not configured or configuration is not supported by kernel",
2163                                                          sleep_operation_to_string(a->sleep_operation));
2164
2165                         case SLEEP_RESUME_NOT_SUPPORTED:
2166                                 return sd_bus_error_set(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
2167                                                         "Not running on EFI and resume= is not set. No available method to resume from hibernation");
2168
2169                         case SLEEP_NOT_ENOUGH_SWAP_SPACE:
2170                                 return sd_bus_error_set(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
2171                                                         "Not enough suitable swap space for hibernation available on compatible block devices and file systems");
2172
2173                         default:
2174                                 assert_not_reached();
2175
2176                         }
2177         } else if (!a)
2178                 assert_se(a = handle_action_lookup(action));
2179
2180         r = verify_shutdown_creds(m, message, a, flags, error);
2181         if (r != 0)
2182                 return r;
2183
2184         if (m->delayed_action)
2185                 return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS,
2186                                          "Action %s already in progress, refusing requested %s operation.",
2187                                          handle_action_to_string(m->delayed_action->handle),
2188                                          handle_action_to_string(a->handle));
2189
2190         /* reset case we're shorting a scheduled shutdown */
2191         m->unlink_nologin = false;
2192         reset_scheduled_shutdown(m);
2193
2194         m->scheduled_shutdown_timeout = 0;
2195         m->scheduled_shutdown_action = action;
2196
2197         (void) setup_wall_message_timer(m, message);
2198
2199         r = bus_manager_shutdown_or_sleep_now_or_later(m, a, error);
2200         if (r < 0)
2201                 return r;
2202
2203         return sd_bus_reply_method_return(message, NULL);
2204 }
2205
2206 static int method_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2207         Manager *m = userdata;
2208
2209         return method_do_shutdown_or_sleep(
2210                         m, message,
2211                         HANDLE_POWEROFF,
2212                         sd_bus_message_is_method_call(message, NULL, "PowerOffWithFlags"),
2213                         error);
2214 }
2215
2216 static int method_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2217         Manager *m = userdata;
2218
2219         return method_do_shutdown_or_sleep(
2220                         m, message,
2221                         HANDLE_REBOOT,
2222                         sd_bus_message_is_method_call(message, NULL, "RebootWithFlags"),
2223                         error);
2224 }
2225
2226 static int method_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2227         Manager *m = userdata;
2228
2229         return method_do_shutdown_or_sleep(
2230                         m, message,
2231                         HANDLE_HALT,
2232                         sd_bus_message_is_method_call(message, NULL, "HaltWithFlags"),
2233                         error);
2234 }
2235
2236 static int method_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2237         Manager *m = userdata;
2238
2239         return method_do_shutdown_or_sleep(
2240                         m, message,
2241                         HANDLE_SUSPEND,
2242                         sd_bus_message_is_method_call(message, NULL, "SuspendWithFlags"),
2243                         error);
2244 }
2245
2246 static int method_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2247         Manager *m = userdata;
2248
2249         return method_do_shutdown_or_sleep(
2250                         m, message,
2251                         HANDLE_HIBERNATE,
2252                         sd_bus_message_is_method_call(message, NULL, "HibernateWithFlags"),
2253                         error);
2254 }
2255
2256 static int method_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2257         Manager *m = userdata;
2258
2259         return method_do_shutdown_or_sleep(
2260                         m, message,
2261                         HANDLE_HYBRID_SLEEP,
2262                         sd_bus_message_is_method_call(message, NULL, "HybridSleepWithFlags"),
2263                         error);
2264 }
2265
2266 static int method_suspend_then_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2267         Manager *m = userdata;
2268
2269         return method_do_shutdown_or_sleep(
2270                         m, message,
2271                         HANDLE_SUSPEND_THEN_HIBERNATE,
2272                         sd_bus_message_is_method_call(message, NULL, "SuspendThenHibernateWithFlags"),
2273                         error);
2274 }
2275
2276 static int method_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2277         Manager *m = userdata;
2278
2279         return method_do_shutdown_or_sleep(
2280                         m, message,
2281                         HANDLE_SLEEP,
2282                         /* with_flags = */ true,
2283                         error);
2284 }
2285
2286 static int nologin_timeout_handler(
2287                         sd_event_source *s,
2288                         uint64_t usec,
2289                         void *userdata) {
2290
2291         Manager *m = userdata;
2292
2293         log_info("Creating /run/nologin, blocking further logins...");
2294
2295         m->unlink_nologin =
2296                 create_shutdown_run_nologin_or_warn() >= 0;
2297
2298         return 0;
2299 }
2300
2301 static usec_t nologin_timeout_usec(usec_t elapse) {
2302         /* Issue /run/nologin five minutes before shutdown */
2303         return LESS_BY(elapse, 5 * USEC_PER_MINUTE);
2304 }
2305
2306 void manager_load_scheduled_shutdown(Manager *m) {
2307         _cleanup_fclose_ FILE *f = NULL;
2308         _cleanup_free_ char *usec = NULL,
2309                *warn_wall = NULL,
2310                *mode = NULL,
2311                *wall_message = NULL,
2312                *uid = NULL,
2313                *tty = NULL;
2314         int r;
2315
2316         assert(m);
2317
2318         r = parse_env_file(f, SHUTDOWN_SCHEDULE_FILE,
2319                         "USEC", &usec,
2320                         "WARN_WALL", &warn_wall,
2321                         "MODE", &mode,
2322                         "WALL_MESSAGE", &wall_message,
2323                         "UID", &uid,
2324                         "TTY", &tty);
2325
2326         /* reset will delete the file */
2327         reset_scheduled_shutdown(m);
2328
2329         if (r == -ENOENT)
2330                 return;
2331         if (r < 0)
2332                 return (void) log_debug_errno(r, "Failed to parse " SHUTDOWN_SCHEDULE_FILE ": %m");
2333
2334         HandleAction handle = handle_action_from_string(mode);
2335         if (handle < 0)
2336                 return (void) log_debug_errno(SYNTHETIC_ERRNO(EINVAL), "Failed to parse scheduled shutdown type: %s", mode);
2337
2338         if (!usec)
2339                 return (void) log_debug_errno(SYNTHETIC_ERRNO(EINVAL), "USEC is required");
2340         if (deserialize_usec(usec, &m->scheduled_shutdown_timeout) < 0)
2341                 return;
2342
2343         /* assign parsed type only after we know usec is also valid */
2344         m->scheduled_shutdown_action = handle;
2345
2346         if (warn_wall) {
2347                 r = parse_boolean(warn_wall);
2348                 if (r < 0)
2349                         log_debug_errno(r, "Failed to parse enabling wall messages");
2350                 else
2351                         m->enable_wall_messages = r;
2352         }
2353
2354         if (wall_message) {
2355                 _cleanup_free_ char *unescaped = NULL;
2356                 r = cunescape(wall_message, 0, &unescaped);
2357                 if (r < 0)
2358                         log_debug_errno(r, "Failed to parse wall message: %s", wall_message);
2359                 else
2360                         free_and_replace(m->wall_message, unescaped);
2361         }
2362
2363         if (uid) {
2364                 r = parse_uid(uid, &m->scheduled_shutdown_uid);
2365                 if (r < 0)
2366                         log_debug_errno(r, "Failed to parse wall uid: %s", uid);
2367         }
2368
2369         free_and_replace(m->scheduled_shutdown_tty, tty);
2370
2371         r = manager_setup_shutdown_timers(m);
2372         if (r < 0)
2373                 return reset_scheduled_shutdown(m);
2374
2375         (void) manager_setup_wall_message_timer(m);
2376         (void) update_schedule_file(m);
2377
2378         return;
2379 }
2380
2381 static int update_schedule_file(Manager *m) {
2382         _cleanup_(unlink_and_freep) char *temp_path = NULL;
2383         _cleanup_fclose_ FILE *f = NULL;
2384         int r;
2385
2386         assert(m);
2387         assert(handle_action_valid(m->scheduled_shutdown_action));
2388
2389         r = mkdir_parents_label(SHUTDOWN_SCHEDULE_FILE, 0755);
2390         if (r < 0)
2391                 return log_error_errno(r, "Failed to create shutdown subdirectory: %m");
2392
2393         r = fopen_temporary(SHUTDOWN_SCHEDULE_FILE, &f, &temp_path);
2394         if (r < 0)
2395                 return log_error_errno(r, "Failed to save information about scheduled shutdowns: %m");
2396
2397         (void) fchmod(fileno(f), 0644);
2398
2399         serialize_usec(f, "USEC", m->scheduled_shutdown_timeout);
2400         serialize_item_format(f, "WARN_WALL", "%s", one_zero(m->enable_wall_messages));
2401         serialize_item_format(f, "MODE", "%s", handle_action_to_string(m->scheduled_shutdown_action));
2402         serialize_item_format(f, "UID", UID_FMT, m->scheduled_shutdown_uid);
2403
2404         if (m->scheduled_shutdown_tty)
2405                 serialize_item_format(f, "TTY", "%s", m->scheduled_shutdown_tty);
2406
2407         if (!isempty(m->wall_message)) {
2408                 r = serialize_item_escaped(f, "WALL_MESSAGE", m->wall_message);
2409                 if (r < 0)
2410                         goto fail;
2411         }
2412
2413         r = fflush_and_check(f);
2414         if (r < 0)
2415                 goto fail;
2416
2417         if (rename(temp_path, SHUTDOWN_SCHEDULE_FILE) < 0) {
2418                 r = -errno;
2419                 goto fail;
2420         }
2421
2422         temp_path = mfree(temp_path);
2423         return 0;
2424
2425 fail:
2426         (void) unlink(SHUTDOWN_SCHEDULE_FILE);
2427
2428         return log_error_errno(r, "Failed to write information about scheduled shutdowns: %m");
2429 }
2430
2431 static void reset_scheduled_shutdown(Manager *m) {
2432         assert(m);
2433
2434         m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2435         m->wall_message_timeout_source = sd_event_source_unref(m->wall_message_timeout_source);
2436         m->nologin_timeout_source = sd_event_source_unref(m->nologin_timeout_source);
2437
2438         m->scheduled_shutdown_action = _HANDLE_ACTION_INVALID;
2439         m->scheduled_shutdown_timeout = USEC_INFINITY;
2440         m->scheduled_shutdown_uid = UID_INVALID;
2441         m->scheduled_shutdown_tty = mfree(m->scheduled_shutdown_tty);
2442         m->shutdown_dry_run = false;
2443
2444         if (m->unlink_nologin) {
2445                 (void) unlink_or_warn("/run/nologin");
2446                 m->unlink_nologin = false;
2447         }
2448
2449         (void) unlink(SHUTDOWN_SCHEDULE_FILE);
2450 }
2451
2452 static int manager_scheduled_shutdown_handler(
2453                         sd_event_source *s,
2454                         uint64_t usec,
2455                         void *userdata) {
2456
2457         Manager *m = ASSERT_PTR(userdata);
2458         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
2459         const HandleActionData *a;
2460         int r;
2461
2462         assert_se(a = handle_action_lookup(m->scheduled_shutdown_action));
2463
2464         /* Don't allow multiple jobs being executed at the same time */
2465         if (m->delayed_action) {
2466                 r = log_error_errno(SYNTHETIC_ERRNO(EALREADY),
2467                                     "Scheduled shutdown to %s failed: shutdown or sleep operation already in progress.",
2468                                     a->target);
2469                 goto error;
2470         }
2471
2472         if (m->shutdown_dry_run) {
2473                 /* We do not process delay inhibitors here.  Otherwise, we
2474                  * would have to be considered "in progress" (like the check
2475                  * above) for some seconds after our admin has seen the final
2476                  * wall message. */
2477
2478                 bus_manager_log_shutdown(m, a);
2479                 log_info("Running in dry run, suppressing action.");
2480                 reset_scheduled_shutdown(m);
2481
2482                 return 0;
2483         }
2484
2485         r = bus_manager_shutdown_or_sleep_now_or_later(m, a, &error);
2486         if (r < 0) {
2487                 log_error_errno(r, "Scheduled shutdown to %s failed: %m", a->target);
2488                 goto error;
2489         }
2490
2491         return 0;
2492
2493 error:
2494         reset_scheduled_shutdown(m);
2495         return r;
2496 }
2497
2498 static int method_schedule_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2499         Manager *m = ASSERT_PTR(userdata);
2500         HandleAction handle;
2501         const HandleActionData *a;
2502         uint64_t elapse;
2503         char *type;
2504         int r;
2505         bool dry_run = false;
2506
2507         assert(message);
2508
2509         r = sd_bus_message_read(message, "st", &type, &elapse);
2510         if (r < 0)
2511                 return r;
2512
2513         if (startswith(type, "dry-")) {
2514                 type += 4;
2515                 dry_run = true;
2516         }
2517
2518         handle = handle_action_from_string(type);
2519         if (!HANDLE_ACTION_IS_SHUTDOWN(handle))
2520                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unsupported shutdown type: %s", type);
2521
2522         assert_se(a = handle_action_lookup(handle));
2523         assert(a->polkit_action);
2524
2525         r = verify_shutdown_creds(m, message, a, 0, error);
2526         if (r != 0)
2527                 return r;
2528
2529         m->scheduled_shutdown_action = handle;
2530         m->shutdown_dry_run = dry_run;
2531         m->scheduled_shutdown_timeout = elapse;
2532
2533         r = manager_setup_shutdown_timers(m);
2534         if (r < 0)
2535                 return r;
2536
2537         r = setup_wall_message_timer(m, message);
2538         if (r >= 0)
2539                 r = update_schedule_file(m);
2540
2541         if (r < 0) {
2542                 reset_scheduled_shutdown(m);
2543                 return r;
2544         }
2545
2546         return sd_bus_reply_method_return(message, NULL);
2547 }
2548
2549 static int manager_setup_shutdown_timers(Manager* m) {
2550         int r;
2551
2552         r = event_reset_time(m->event, &m->scheduled_shutdown_timeout_source,
2553                              CLOCK_REALTIME,
2554                              m->scheduled_shutdown_timeout, 0,
2555                              manager_scheduled_shutdown_handler, m,
2556                              0, "scheduled-shutdown-timeout", true);
2557         if (r < 0)
2558                 goto fail;
2559
2560         r = event_reset_time(m->event, &m->nologin_timeout_source,
2561                              CLOCK_REALTIME,
2562                              nologin_timeout_usec(m->scheduled_shutdown_timeout), 0,
2563                              nologin_timeout_handler, m,
2564                              0, "nologin-timeout", true);
2565         if (r < 0)
2566                 goto fail;
2567
2568         return 0;
2569
2570 fail:
2571         m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2572         m->nologin_timeout_source = sd_event_source_unref(m->nologin_timeout_source);
2573
2574         return r;
2575 }
2576
2577 static int method_cancel_scheduled_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2578         Manager *m = ASSERT_PTR(userdata);
2579         const HandleActionData *a;
2580         bool cancelled;
2581         int r;
2582
2583         assert(message);
2584
2585         cancelled = handle_action_valid(m->scheduled_shutdown_action) && m->scheduled_shutdown_action != HANDLE_IGNORE;
2586         if (!cancelled)
2587                 return sd_bus_reply_method_return(message, "b", false);
2588
2589         assert_se(a = handle_action_lookup(m->scheduled_shutdown_action));
2590         if (!a->polkit_action)
2591                 return sd_bus_error_set(error, SD_BUS_ERROR_AUTH_FAILED, "Unsupported shutdown type");
2592
2593         r = bus_verify_polkit_async(
2594                         message,
2595                         a->polkit_action,
2596                         /* details= */ NULL,
2597                         &m->polkit_registry,
2598                         error);
2599         if (r < 0)
2600                 return r;
2601         if (r == 0)
2602                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2603
2604         if (m->enable_wall_messages) {
2605                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2606                 const char *tty = NULL;
2607                 uid_t uid = 0;
2608
2609                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
2610                 if (r >= 0) {
2611                         (void) sd_bus_creds_get_uid(creds, &uid);
2612                         (void) sd_bus_creds_get_tty(creds, &tty);
2613                 }
2614
2615                 _cleanup_free_ char *username = uid_to_name(uid);
2616
2617                 log_struct(LOG_INFO,
2618                            LOG_MESSAGE("System shutdown has been cancelled"),
2619                            "ACTION=%s", handle_action_to_string(a->handle),
2620                            "MESSAGE_ID=" SD_MESSAGE_SHUTDOWN_CANCELED_STR,
2621                            username ? "OPERATOR=%s" : NULL, username);
2622
2623                 (void) wall("System shutdown has been cancelled",
2624                             username, tty, logind_wall_tty_filter, m);
2625         }
2626
2627         reset_scheduled_shutdown(m);
2628
2629         return sd_bus_reply_method_return(message, "b", true);
2630 }
2631
2632 static int method_can_shutdown_or_sleep(
2633                 Manager *m,
2634                 sd_bus_message *message,
2635                 HandleAction action,
2636                 sd_bus_error *error) {
2637
2638         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2639         bool multiple_sessions, challenge, blocked, check_unit_state = true;
2640         const HandleActionData *a;
2641         const char *result = NULL;
2642         uid_t uid;
2643         int r;
2644
2645         assert(m);
2646         assert(message);
2647         assert(HANDLE_ACTION_IS_SHUTDOWN(action) || HANDLE_ACTION_IS_SLEEP(action));
2648
2649         if (action == HANDLE_SLEEP) {
2650                 HandleAction selected;
2651
2652                 selected = handle_action_sleep_select(m);
2653                 if (selected < 0)
2654                         return sd_bus_reply_method_return(message, "s", "na");
2655
2656                 check_unit_state = false; /* Already handled by handle_action_sleep_select */
2657
2658                 assert_se(a = handle_action_lookup(selected));
2659
2660         } else if (HANDLE_ACTION_IS_SLEEP(action)) {
2661                 SleepSupport support;
2662
2663                 assert_se(a = handle_action_lookup(action));
2664
2665                 assert(a->sleep_operation >= 0);
2666                 assert(a->sleep_operation < _SLEEP_OPERATION_MAX);
2667
2668                 r = sleep_supported_full(a->sleep_operation, &support);
2669                 if (r < 0)
2670                         return r;
2671                 if (r == 0)
2672                         return sd_bus_reply_method_return(message, "s", support == SLEEP_DISABLED ? "no" : "na");
2673         } else
2674                 assert_se(a = handle_action_lookup(action));
2675
2676         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
2677         if (r < 0)
2678                 return r;
2679
2680         r = sd_bus_creds_get_euid(creds, &uid);
2681         if (r < 0)
2682                 return r;
2683
2684         r = have_multiple_sessions(m, uid);
2685         if (r < 0)
2686                 return r;
2687
2688         multiple_sessions = r > 0;
2689         blocked = manager_is_inhibited(m, a->inhibit_what, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
2690
2691         if (check_unit_state && a->target) {
2692                 _cleanup_free_ char *load_state = NULL;
2693
2694                 r = unit_load_state(m->bus, a->target, &load_state);
2695                 if (r < 0)
2696                         return r;
2697
2698                 if (!streq(load_state, "loaded")) {
2699                         result = "no";
2700                         goto finish;
2701                 }
2702         }
2703
2704         if (multiple_sessions) {
2705                 r = bus_test_polkit(
2706                                 message,
2707                                 a->polkit_action_multiple_sessions,
2708                                 /* details= */ NULL,
2709                                 /* good_user= */ UID_INVALID,
2710                                 &challenge,
2711                                 error);
2712                 if (r < 0)
2713                         return r;
2714
2715                 if (r > 0)
2716                         result = "yes";
2717                 else if (challenge)
2718                         result = "challenge";
2719                 else
2720                         result = "no";
2721         }
2722
2723         if (blocked) {
2724                 r = bus_test_polkit(
2725                                 message,
2726                                 a->polkit_action_ignore_inhibit,
2727                                 /* details= */ NULL,
2728                                 /* good_user= */ UID_INVALID,
2729                                 &challenge,
2730                                 error);
2731                 if (r < 0)
2732                         return r;
2733
2734                 if (r > 0) {
2735                         if (!result)
2736                                 result = "yes";
2737                 } else if (challenge) {
2738                         if (!result || streq(result, "yes"))
2739                                 result = "challenge";
2740                 } else
2741                         result = "no";
2742         }
2743
2744         if (!multiple_sessions && !blocked) {
2745                 /* If neither inhibit nor multiple sessions
2746                  * apply then just check the normal policy */
2747
2748                 r = bus_test_polkit(
2749                                 message,
2750                                 a->polkit_action,
2751                                 /* details= */ NULL,
2752                                 /* good_user= */ UID_INVALID,
2753                                 &challenge,
2754                                 error);
2755                 if (r < 0)
2756                         return r;
2757
2758                 if (r > 0)
2759                         result = "yes";
2760                 else if (challenge)
2761                         result = "challenge";
2762                 else
2763                         result = "no";
2764         }
2765
2766  finish:
2767         return sd_bus_reply_method_return(message, "s", result);
2768 }
2769
2770 static int method_can_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2771         Manager *m = userdata;
2772
2773         return method_can_shutdown_or_sleep(m, message, HANDLE_POWEROFF, error);
2774 }
2775
2776 static int method_can_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2777         Manager *m = userdata;
2778
2779         return method_can_shutdown_or_sleep(m, message, HANDLE_REBOOT, error);
2780 }
2781
2782 static int method_can_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2783         Manager *m = userdata;
2784
2785         return method_can_shutdown_or_sleep(m, message, HANDLE_HALT, error);
2786 }
2787
2788 static int method_can_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2789         Manager *m = userdata;
2790
2791         return method_can_shutdown_or_sleep(m, message, HANDLE_SUSPEND, error);
2792 }
2793
2794 static int method_can_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2795         Manager *m = userdata;
2796
2797         return method_can_shutdown_or_sleep(m, message, HANDLE_HIBERNATE, error);
2798 }
2799
2800 static int method_can_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2801         Manager *m = userdata;
2802
2803         return method_can_shutdown_or_sleep(m, message, HANDLE_HYBRID_SLEEP, error);
2804 }
2805
2806 static int method_can_suspend_then_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2807         Manager *m = userdata;
2808
2809         return method_can_shutdown_or_sleep(m, message, HANDLE_SUSPEND_THEN_HIBERNATE, error);
2810 }
2811
2812 static int method_can_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2813         Manager *m = userdata;
2814
2815         return method_can_shutdown_or_sleep(m, message, HANDLE_SLEEP, error);
2816 }
2817
2818 static int property_get_reboot_parameter(
2819                 sd_bus *bus,
2820                 const char *path,
2821                 const char *interface,
2822                 const char *property,
2823                 sd_bus_message *reply,
2824                 void *userdata,
2825                 sd_bus_error *error) {
2826         _cleanup_free_ char *parameter = NULL;
2827         int r;
2828
2829         assert(bus);
2830         assert(reply);
2831         assert(userdata);
2832
2833         r = read_reboot_parameter(&parameter);
2834         if (r < 0)
2835                 return r;
2836
2837         return sd_bus_message_append(reply, "s", parameter);
2838 }
2839
2840 static int method_set_reboot_parameter(
2841                 sd_bus_message *message,
2842                 void *userdata,
2843                 sd_bus_error *error) {
2844
2845         Manager *m = ASSERT_PTR(userdata);
2846         const char *arg;
2847         int r;
2848
2849         assert(message);
2850
2851         r = sd_bus_message_read(message, "s", &arg);
2852         if (r < 0)
2853                 return r;
2854
2855         r = detect_container();
2856         if (r < 0)
2857                 return r;
2858         if (r > 0)
2859                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED,
2860                                          "Reboot parameter not supported in containers, refusing.");
2861
2862         r = bus_verify_polkit_async(
2863                         message,
2864                         "org.freedesktop.login1.set-reboot-parameter",
2865                         /* details= */ NULL,
2866                         &m->polkit_registry,
2867                         error);
2868         if (r < 0)
2869                 return r;
2870         if (r == 0)
2871                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2872
2873         r = update_reboot_parameter_and_warn(arg, false);
2874         if (r < 0)
2875                 return r;
2876
2877         return sd_bus_reply_method_return(message, NULL);
2878 }
2879
2880 static int method_can_reboot_parameter(
2881                 sd_bus_message *message,
2882                 void *userdata,
2883                 sd_bus_error *error) {
2884
2885         _unused_ Manager *m = ASSERT_PTR(userdata);
2886         int r;
2887
2888         assert(message);
2889
2890         r = detect_container();
2891         if (r < 0)
2892                 return r;
2893         if (r > 0) /* Inside containers, specifying a reboot parameter, doesn't make much sense */
2894                 return sd_bus_reply_method_return(message, "s", "na");
2895
2896         return return_test_polkit(
2897                         message,
2898                         "org.freedesktop.login1.set-reboot-parameter",
2899                         /* details= */ NULL,
2900                         /* good_user= */ UID_INVALID,
2901                         error);
2902 }
2903
2904 static int property_get_reboot_to_firmware_setup(
2905                 sd_bus *bus,
2906                 const char *path,
2907                 const char *interface,
2908                 const char *property,
2909                 sd_bus_message *reply,
2910                 void *userdata,
2911                 sd_bus_error *error) {
2912         int r;
2913
2914         assert(bus);
2915         assert(reply);
2916         assert(userdata);
2917
2918         r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
2919         if (r == -ENXIO) {
2920                 /* EFI case: let's see what is currently configured in the EFI variables */
2921                 r = efi_get_reboot_to_firmware();
2922                 if (r < 0 && r != -EOPNOTSUPP)
2923                         log_warning_errno(r, "Failed to determine reboot-to-firmware-setup state: %m");
2924         } else if (r < 0)
2925                 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
2926         else if (r > 0) {
2927                 /* Non-EFI case: let's see whether /run/systemd/reboot-to-firmware-setup exists. */
2928                 if (access("/run/systemd/reboot-to-firmware-setup", F_OK) < 0) {
2929                         if (errno != ENOENT)
2930                                 log_warning_errno(errno, "Failed to check whether /run/systemd/reboot-to-firmware-setup exists: %m");
2931
2932                         r = false;
2933                 } else
2934                         r = true;
2935         }
2936
2937         return sd_bus_message_append(reply, "b", r > 0);
2938 }
2939
2940 static int method_set_reboot_to_firmware_setup(
2941                 sd_bus_message *message,
2942                 void *userdata,
2943                 sd_bus_error *error) {
2944
2945         Manager *m = ASSERT_PTR(userdata);
2946         bool use_efi;
2947         int b, r;
2948
2949         assert(message);
2950
2951         r = sd_bus_message_read(message, "b", &b);
2952         if (r < 0)
2953                 return r;
2954
2955         r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
2956         if (r == -ENXIO) {
2957                 /* EFI case: let's see what the firmware supports */
2958
2959                 r = efi_reboot_to_firmware_supported();
2960                 if (r == -EOPNOTSUPP)
2961                         return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Firmware does not support boot into firmware.");
2962                 if (r < 0)
2963                         return r;
2964
2965                 use_efi = true;
2966
2967         } else if (r <= 0) {
2968                 /* non-EFI case: $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP is set to off */
2969
2970                 if (r < 0)
2971                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
2972
2973                 return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Firmware does not support boot into firmware.");
2974         } else
2975                 /* non-EFI case: $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP is set to on */
2976                 use_efi = false;
2977
2978         r = bus_verify_polkit_async(
2979                         message,
2980                         "org.freedesktop.login1.set-reboot-to-firmware-setup",
2981                         /* details= */ NULL,
2982                         &m->polkit_registry,
2983                         error);
2984         if (r < 0)
2985                 return r;
2986         if (r == 0)
2987                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2988
2989         if (use_efi) {
2990                 r = efi_set_reboot_to_firmware(b);
2991                 if (r < 0)
2992                         return r;
2993         } else {
2994                 if (b) {
2995                         r = touch("/run/systemd/reboot-to-firmware-setup");
2996                         if (r < 0)
2997                                 return r;
2998                 } else {
2999                         if (unlink("/run/systemd/reboot-to-firmware-setup") < 0 && errno != ENOENT)
3000                                 return -errno;
3001                 }
3002         }
3003
3004         return sd_bus_reply_method_return(message, NULL);
3005 }
3006
3007 static int method_can_reboot_to_firmware_setup(
3008                 sd_bus_message *message,
3009                 void *userdata,
3010                 sd_bus_error *error) {
3011
3012         _unused_ Manager *m = ASSERT_PTR(userdata);
3013         int r;
3014
3015         assert(message);
3016
3017         r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
3018         if (r == -ENXIO) {
3019                 /* EFI case: let's see what the firmware supports */
3020
3021                 r = efi_reboot_to_firmware_supported();
3022                 if (r < 0) {
3023                         if (r != -EOPNOTSUPP)
3024                                 log_warning_errno(r, "Failed to determine whether reboot to firmware is supported: %m");
3025
3026                         return sd_bus_reply_method_return(message, "s", "na");
3027                 }
3028
3029         } else if (r <= 0) {
3030                 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP */
3031
3032                 if (r < 0)
3033                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
3034
3035                 return sd_bus_reply_method_return(message, "s", "na");
3036         }
3037
3038         return return_test_polkit(
3039                         message,
3040                         "org.freedesktop.login1.set-reboot-to-firmware-setup",
3041                         /* details= */ NULL,
3042                         /* good_user= */ UID_INVALID,
3043                         error);
3044 }
3045
3046 static int property_get_reboot_to_boot_loader_menu(
3047                 sd_bus *bus,
3048                 const char *path,
3049                 const char *interface,
3050                 const char *property,
3051                 sd_bus_message *reply,
3052                 void *userdata,
3053                 sd_bus_error *error) {
3054
3055         uint64_t x = UINT64_MAX;
3056         int r;
3057
3058         assert(bus);
3059         assert(reply);
3060         assert(userdata);
3061
3062         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
3063         if (r == -ENXIO) {
3064                 /* EFI case: returns the current value of LoaderConfigTimeoutOneShot. Three cases are distinguished:
3065                  *
3066                  *     1. Variable not set, boot into boot loader menu is not enabled (we return UINT64_MAX to the user)
3067                  *     2. Variable set to "0", boot into boot loader menu is enabled with no timeout (we return 0 to the user)
3068                  *     3. Variable set to numeric value formatted in ASCII, boot into boot loader menu with the specified timeout in seconds
3069                  */
3070
3071                 r = efi_loader_get_config_timeout_one_shot(&x);
3072                 if (r < 0) {
3073                         if (r != -ENOENT)
3074                                 log_warning_errno(r, "Failed to read LoaderConfigTimeoutOneShot variable, ignoring: %m");
3075                 }
3076
3077         } else if (r < 0)
3078                 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
3079         else if (r > 0) {
3080                 _cleanup_free_ char *v = NULL;
3081
3082                 /* Non-EFI case, let's process /run/systemd/reboot-to-boot-loader-menu. */
3083
3084                 r = read_one_line_file("/run/systemd/reboot-to-boot-loader-menu", &v);
3085                 if (r < 0) {
3086                         if (r != -ENOENT)
3087                                 log_warning_errno(r, "Failed to read /run/systemd/reboot-to-boot-loader-menu: %m");
3088                 } else {
3089                         r = safe_atou64(v, &x);
3090                         if (r < 0)
3091                                 log_warning_errno(r, "Failed to parse /run/systemd/reboot-to-boot-loader-menu: %m");
3092                 }
3093         }
3094
3095         return sd_bus_message_append(reply, "t", x);
3096 }
3097
3098 static int method_set_reboot_to_boot_loader_menu(
3099                 sd_bus_message *message,
3100                 void *userdata,
3101                 sd_bus_error *error) {
3102
3103         Manager *m = ASSERT_PTR(userdata);
3104         bool use_efi;
3105         uint64_t x;
3106         int r;
3107
3108         assert(message);
3109
3110         r = sd_bus_message_read(message, "t", &x);
3111         if (r < 0)
3112                 return r;
3113
3114         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
3115         if (r == -ENXIO) {
3116                 uint64_t features;
3117
3118                 /* EFI case: let's see if booting into boot loader menu is supported. */
3119
3120                 r = efi_loader_get_features(&features);
3121                 if (r < 0)
3122                         log_warning_errno(r, "Failed to determine whether reboot to boot loader menu is supported: %m");
3123                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT))
3124                         return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader does not support boot into boot loader menu.");
3125
3126                 use_efi = true;
3127
3128         } else if (r <= 0) {
3129                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU is set to off */
3130
3131                 if (r < 0)
3132                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
3133
3134                 return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader does not support boot into boot loader menu.");
3135         } else
3136                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU is set to on */
3137                 use_efi = false;
3138
3139         r = bus_verify_polkit_async(
3140                         message,
3141                         "org.freedesktop.login1.set-reboot-to-boot-loader-menu",
3142                         /* details= */ NULL,
3143                         &m->polkit_registry,
3144                         error);
3145         if (r < 0)
3146                 return r;
3147         if (r == 0)
3148                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
3149
3150         if (use_efi) {
3151                 if (x == UINT64_MAX)
3152                         r = efi_set_variable(EFI_LOADER_VARIABLE(LoaderConfigTimeoutOneShot), NULL, 0);
3153                 else {
3154                         char buf[DECIMAL_STR_MAX(uint64_t) + 1];
3155                         xsprintf(buf, "%" PRIu64, DIV_ROUND_UP(x, USEC_PER_SEC)); /* second granularity */
3156
3157                         r = efi_set_variable_string(EFI_LOADER_VARIABLE(LoaderConfigTimeoutOneShot), buf);
3158                 }
3159                 if (r < 0)
3160                         return r;
3161         } else {
3162                 if (x == UINT64_MAX) {
3163                         if (unlink("/run/systemd/reboot-to-boot-loader-menu") < 0 && errno != ENOENT)
3164                                 return -errno;
3165                 } else {
3166                         char buf[DECIMAL_STR_MAX(uint64_t) + 1];
3167
3168                         xsprintf(buf, "%" PRIu64, x); /* μs granularity */
3169
3170                         r = write_string_file_atomic_label("/run/systemd/reboot-to-boot-loader-menu", buf);
3171                         if (r < 0)
3172                                 return r;
3173                 }
3174         }
3175
3176         return sd_bus_reply_method_return(message, NULL);
3177 }
3178
3179 static int method_can_reboot_to_boot_loader_menu(
3180                 sd_bus_message *message,
3181                 void *userdata,
3182                 sd_bus_error *error) {
3183
3184         _unused_ Manager *m = ASSERT_PTR(userdata);
3185         int r;
3186
3187         assert(message);
3188
3189         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
3190         if (r == -ENXIO) {
3191                 uint64_t features = 0;
3192
3193                 /* EFI case, let's see if booting into boot loader menu is supported. */
3194
3195                 r = efi_loader_get_features(&features);
3196                 if (r < 0)
3197                         log_warning_errno(r, "Failed to determine whether reboot to boot loader menu is supported: %m");
3198                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT))
3199                         return sd_bus_reply_method_return(message, "s", "na");
3200
3201         } else if (r <= 0) {
3202                 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU */
3203
3204                 if (r < 0)
3205                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
3206
3207                 return sd_bus_reply_method_return(message, "s", "na");
3208         }
3209
3210         return return_test_polkit(
3211                         message,
3212                         "org.freedesktop.login1.set-reboot-to-boot-loader-menu",
3213                         /* details= */ NULL,
3214                         /* good_user= */ UID_INVALID,
3215                         error);
3216 }
3217
3218 static int property_get_reboot_to_boot_loader_entry(
3219                 sd_bus *bus,
3220                 const char *path,
3221                 const char *interface,
3222                 const char *property,
3223                 sd_bus_message *reply,
3224                 void *userdata,
3225                 sd_bus_error *error) {
3226
3227         _cleanup_free_ char *v = NULL;
3228         Manager *m = ASSERT_PTR(userdata);
3229         const char *x = NULL;
3230         int r;
3231
3232         assert(bus);
3233         assert(reply);
3234
3235         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
3236         if (r == -ENXIO) {
3237                 /* EFI case: let's read the LoaderEntryOneShot variable */
3238
3239                 r = efi_loader_update_entry_one_shot_cache(&m->efi_loader_entry_one_shot, &m->efi_loader_entry_one_shot_stat);
3240                 if (r < 0) {
3241                         if (r != -ENOENT)
3242                                 log_warning_errno(r, "Failed to read LoaderEntryOneShot variable, ignoring: %m");
3243                 } else
3244                         x = m->efi_loader_entry_one_shot;
3245
3246         } else if (r < 0)
3247                 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
3248         else if (r > 0) {
3249
3250                 /* Non-EFI case, let's process /run/systemd/reboot-to-boot-loader-entry. */
3251
3252                 r = read_one_line_file("/run/systemd/reboot-to-boot-loader-entry", &v);
3253                 if (r < 0) {
3254                         if (r != -ENOENT)
3255                                 log_warning_errno(r, "Failed to read /run/systemd/reboot-to-boot-loader-entry, ignoring: %m");
3256                 } else if (!efi_loader_entry_name_valid(v))
3257                         log_warning("/run/systemd/reboot-to-boot-loader-entry is not valid, ignoring.");
3258                 else
3259                         x = v;
3260         }
3261
3262         return sd_bus_message_append(reply, "s", x);
3263 }
3264
3265 static int boot_loader_entry_exists(Manager *m, const char *id) {
3266         _cleanup_(boot_config_free) BootConfig config = BOOT_CONFIG_NULL;
3267         int r;
3268
3269         assert(m);
3270         assert(id);
3271
3272         r = boot_config_load_auto(&config, NULL, NULL);
3273         if (r < 0 && r != -ENOKEY) /* don't complain if no GPT is found, hence skip ENOKEY */
3274                 return r;
3275
3276         r = manager_read_efi_boot_loader_entries(m);
3277         if (r >= 0)
3278                 (void) boot_config_augment_from_loader(&config, m->efi_boot_loader_entries, /* auto_only= */ true);
3279
3280         return !!boot_config_find_entry(&config, id);
3281 }
3282
3283 static int method_set_reboot_to_boot_loader_entry(
3284                 sd_bus_message *message,
3285                 void *userdata,
3286                 sd_bus_error *error) {
3287
3288         Manager *m = ASSERT_PTR(userdata);
3289         bool use_efi;
3290         const char *v;
3291         int r;
3292
3293         assert(message);
3294
3295         r = sd_bus_message_read(message, "s", &v);
3296         if (r < 0)
3297                 return r;
3298
3299         if (isempty(v))
3300                 v = NULL;
3301         else if (efi_loader_entry_name_valid(v)) {
3302                 r = boot_loader_entry_exists(m, v);
3303                 if (r < 0)
3304                         return r;
3305                 if (r == 0)
3306                         return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader entry '%s' is not known.", v);
3307         } else
3308                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Boot loader entry name '%s' is not valid, refusing.", v);
3309
3310         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
3311         if (r == -ENXIO) {
3312                 uint64_t features;
3313
3314                 /* EFI case: let's see if booting into boot loader entry is supported. */
3315
3316                 r = efi_loader_get_features(&features);
3317                 if (r < 0)
3318                         log_warning_errno(r, "Failed to determine whether reboot into boot loader entry is supported: %m");
3319                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_ENTRY_ONESHOT))
3320                         return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Loader does not support boot into boot loader entry.");
3321
3322                 use_efi = true;
3323
3324         } else if (r <= 0) {
3325                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY is set to off */
3326
3327                 if (r < 0)
3328                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
3329
3330                 return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Loader does not support boot into boot loader entry.");
3331         } else
3332                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY is set to on */
3333                 use_efi = false;
3334
3335         r = bus_verify_polkit_async(
3336                         message,
3337                         "org.freedesktop.login1.set-reboot-to-boot-loader-entry",
3338                         /* details= */ NULL,
3339                         &m->polkit_registry,
3340                         error);
3341         if (r < 0)
3342                 return r;
3343         if (r == 0)
3344                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
3345
3346         if (use_efi) {
3347                 if (isempty(v))
3348                         /* Delete item */
3349                         r = efi_set_variable(EFI_LOADER_VARIABLE(LoaderEntryOneShot), NULL, 0);
3350                 else
3351                         r = efi_set_variable_string(EFI_LOADER_VARIABLE(LoaderEntryOneShot), v);
3352                 if (r < 0)
3353                         return r;
3354         } else {
3355                 if (isempty(v)) {
3356                         if (unlink("/run/systemd/reboot-to-boot-loader-entry") < 0 && errno != ENOENT)
3357                                 return -errno;
3358                 } else {
3359                         r = write_string_file_atomic_label("/run/systemd/reboot-boot-to-loader-entry", v);
3360                         if (r < 0)
3361                                 return r;
3362                 }
3363         }
3364
3365         return sd_bus_reply_method_return(message, NULL);
3366 }
3367
3368 static int method_can_reboot_to_boot_loader_entry(
3369                 sd_bus_message *message,
3370                 void *userdata,
3371                 sd_bus_error *error) {
3372
3373         _unused_ Manager *m = ASSERT_PTR(userdata);
3374         int r;
3375
3376         assert(message);
3377
3378         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
3379         if (r == -ENXIO) {
3380                 uint64_t features = 0;
3381
3382                 /* EFI case, let's see if booting into boot loader entry is supported. */
3383
3384                 r = efi_loader_get_features(&features);
3385                 if (r < 0)
3386                         log_warning_errno(r, "Failed to determine whether reboot to boot loader entry is supported: %m");
3387                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_ENTRY_ONESHOT))
3388                         return sd_bus_reply_method_return(message, "s", "na");
3389
3390         } else if (r <= 0) {
3391                 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY */
3392
3393                 if (r < 0)
3394                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
3395
3396                 return sd_bus_reply_method_return(message, "s", "na");
3397         }
3398
3399         return return_test_polkit(
3400                         message,
3401                         "org.freedesktop.login1.set-reboot-to-boot-loader-entry",
3402                         /* details= */ NULL,
3403                         /* good_user= */ UID_INVALID,
3404                         error);
3405 }
3406
3407 static int property_get_boot_loader_entries(
3408                 sd_bus *bus,
3409                 const char *path,
3410                 const char *interface,
3411                 const char *property,
3412                 sd_bus_message *reply,
3413                 void *userdata,
3414                 sd_bus_error *error) {
3415
3416         _cleanup_(boot_config_free) BootConfig config = BOOT_CONFIG_NULL;
3417         Manager *m = ASSERT_PTR(userdata);
3418         size_t i;
3419         int r;
3420
3421         assert(bus);
3422         assert(reply);
3423
3424         r = boot_config_load_auto(&config, NULL, NULL);
3425         if (r < 0 && r != -ENOKEY) /* don't complain if there's no GPT found */
3426                 return r;
3427
3428         r = manager_read_efi_boot_loader_entries(m);
3429         if (r >= 0)
3430                 (void) boot_config_augment_from_loader(&config, m->efi_boot_loader_entries, /* auto_only= */ true);
3431
3432         r = sd_bus_message_open_container(reply, 'a', "s");
3433         if (r < 0)
3434                 return r;
3435
3436         for (i = 0; i < config.n_entries; i++) {
3437                 BootEntry *e = config.entries + i;
3438
3439                 r = sd_bus_message_append(reply, "s", e->id);
3440                 if (r < 0)
3441                         return r;
3442         }
3443
3444         return sd_bus_message_close_container(reply);
3445 }
3446
3447 static int method_set_wall_message(
3448                 sd_bus_message *message,
3449                 void *userdata,
3450                 sd_bus_error *error) {
3451
3452         int r;
3453         Manager *m = ASSERT_PTR(userdata);
3454         char *wall_message;
3455         int enable_wall_messages;
3456
3457         assert(message);
3458
3459         r = sd_bus_message_read(message, "sb", &wall_message, &enable_wall_messages);
3460         if (r < 0)
3461                 return r;
3462
3463         if (strlen(wall_message) > WALL_MESSAGE_MAX)
3464                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3465                         "Wall message too long, maximum permitted length is %u characters.",
3466                         WALL_MESSAGE_MAX);
3467
3468         /* Short-circuit the operation if the desired state is already in place, to
3469          * avoid an unnecessary polkit permission check. */
3470         if (streq_ptr(m->wall_message, empty_to_null(wall_message)) &&
3471             m->enable_wall_messages == enable_wall_messages)
3472                 goto done;
3473
3474         r = bus_verify_polkit_async(
3475                         message,
3476                         "org.freedesktop.login1.set-wall-message",
3477                         /* details= */ NULL,
3478                         &m->polkit_registry,
3479                         error);
3480         if (r < 0)
3481                 return r;
3482         if (r == 0)
3483                 return 1; /* Will call us back */
3484
3485         r = free_and_strdup(&m->wall_message, empty_to_null(wall_message));
3486         if (r < 0)
3487                 return log_oom();
3488
3489         m->enable_wall_messages = enable_wall_messages;
3490
3491  done:
3492         return sd_bus_reply_method_return(message, NULL);
3493 }
3494
3495 static int method_inhibit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3496         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
3497         _cleanup_(pidref_done) PidRef pidref = PIDREF_NULL;
3498         const char *who, *why, *what, *mode;
3499         _cleanup_free_ char *id = NULL;
3500         _cleanup_close_ int fifo_fd = -EBADF;
3501         Manager *m = ASSERT_PTR(userdata);
3502         InhibitMode mm;
3503         InhibitWhat w;
3504         pid_t pid;
3505         uid_t uid;
3506         int r;
3507
3508         assert(message);
3509
3510         r = sd_bus_message_read(message, "ssss", &what, &who, &why, &mode);
3511         if (r < 0)
3512                 return r;
3513
3514         w = inhibit_what_from_string(what);
3515         if (w <= 0)
3516                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3517                                          "Invalid what specification %s", what);
3518
3519         mm = inhibit_mode_from_string(mode);
3520         if (mm < 0)
3521                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3522                                          "Invalid mode specification %s", mode);
3523
3524         /* Delay is only supported for shutdown/sleep */
3525         if (mm == INHIBIT_DELAY && (w & ~(INHIBIT_SHUTDOWN|INHIBIT_SLEEP)))
3526                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3527                                          "Delay inhibitors only supported for shutdown and sleep");
3528
3529         /* Don't allow taking delay locks while we are already
3530          * executing the operation. We shouldn't create the impression
3531          * that the lock was successful if the machine is about to go
3532          * down/suspend any moment. */
3533         if (m->delayed_action && m->delayed_action->inhibit_what & w)
3534                 return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS,
3535                                          "The operation inhibition has been requested for is already running");
3536
3537         r = bus_verify_polkit_async(
3538                         message,
3539                         w == INHIBIT_SHUTDOWN             ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-shutdown" : "org.freedesktop.login1.inhibit-delay-shutdown") :
3540                         w == INHIBIT_SLEEP                ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-sleep"    : "org.freedesktop.login1.inhibit-delay-sleep") :
3541                         w == INHIBIT_IDLE                 ? "org.freedesktop.login1.inhibit-block-idle" :
3542                         w == INHIBIT_HANDLE_POWER_KEY     ? "org.freedesktop.login1.inhibit-handle-power-key" :
3543                         w == INHIBIT_HANDLE_SUSPEND_KEY   ? "org.freedesktop.login1.inhibit-handle-suspend-key" :
3544                         w == INHIBIT_HANDLE_REBOOT_KEY    ? "org.freedesktop.login1.inhibit-handle-reboot-key" :
3545                         w == INHIBIT_HANDLE_HIBERNATE_KEY ? "org.freedesktop.login1.inhibit-handle-hibernate-key" :
3546                                                             "org.freedesktop.login1.inhibit-handle-lid-switch",
3547                         /* details= */ NULL,
3548                         &m->polkit_registry,
3549                         error);
3550         if (r < 0)
3551                 return r;
3552         if (r == 0)
3553                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
3554
3555         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID|SD_BUS_CREDS_PID, &creds);
3556         if (r < 0)
3557                 return r;
3558
3559         r = sd_bus_creds_get_euid(creds, &uid);
3560         if (r < 0)
3561                 return r;
3562
3563         r = sd_bus_creds_get_pid(creds, &pid);
3564         if (r < 0)
3565                 return r;
3566
3567         r = pidref_set_pid(&pidref, pid);
3568         if (r < 0)
3569                 return sd_bus_error_set_errnof(error, r, "Failed pin source process "PID_FMT": %m", pid);
3570
3571         if (hashmap_size(m->inhibitors) >= m->inhibitors_max)
3572                 return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED,
3573                                          "Maximum number of inhibitors (%" PRIu64 ") reached, refusing further inhibitors.",
3574                                          m->inhibitors_max);
3575
3576         do {
3577                 id = mfree(id);
3578
3579                 if (asprintf(&id, "%" PRIu64, ++m->inhibit_counter) < 0)
3580                         return -ENOMEM;
3581
3582         } while (hashmap_get(m->inhibitors, id));
3583
3584         _cleanup_(inhibitor_freep) Inhibitor *i = NULL;
3585         r = manager_add_inhibitor(m, id, &i);
3586         if (r < 0)
3587                 return r;
3588
3589         i->what = w;
3590         i->mode = mm;
3591         i->pid = TAKE_PIDREF(pidref);
3592         i->uid = uid;
3593         i->why = strdup(why);
3594         i->who = strdup(who);
3595
3596         if (!i->why || !i->who)
3597                 return -ENOMEM;
3598
3599         fifo_fd = inhibitor_create_fifo(i);
3600         if (fifo_fd < 0)
3601                 return fifo_fd;
3602
3603         r = inhibitor_start(i);
3604         if (r < 0)
3605                 return r;
3606         TAKE_PTR(i);
3607
3608         return sd_bus_reply_method_return(message, "h", fifo_fd);
3609 }
3610
3611 static const sd_bus_vtable manager_vtable[] = {
3612         SD_BUS_VTABLE_START(0),
3613
3614         SD_BUS_WRITABLE_PROPERTY("EnableWallMessages", "b", bus_property_get_bool, bus_property_set_bool, offsetof(Manager, enable_wall_messages), 0),
3615         SD_BUS_WRITABLE_PROPERTY("WallMessage", "s", NULL, NULL, offsetof(Manager, wall_message), 0),
3616
3617         SD_BUS_PROPERTY("NAutoVTs", "u", NULL, offsetof(Manager, n_autovts), SD_BUS_VTABLE_PROPERTY_CONST),
3618         SD_BUS_PROPERTY("KillOnlyUsers", "as", NULL, offsetof(Manager, kill_only_users), SD_BUS_VTABLE_PROPERTY_CONST),
3619         SD_BUS_PROPERTY("KillExcludeUsers", "as", NULL, offsetof(Manager, kill_exclude_users), SD_BUS_VTABLE_PROPERTY_CONST),
3620         SD_BUS_PROPERTY("KillUserProcesses", "b", bus_property_get_bool, offsetof(Manager, kill_user_processes), SD_BUS_VTABLE_PROPERTY_CONST),
3621         SD_BUS_PROPERTY("RebootParameter", "s", property_get_reboot_parameter, 0, 0),
3622         SD_BUS_PROPERTY("RebootToFirmwareSetup", "b", property_get_reboot_to_firmware_setup, 0, 0),
3623         SD_BUS_PROPERTY("RebootToBootLoaderMenu", "t", property_get_reboot_to_boot_loader_menu, 0, 0),
3624         SD_BUS_PROPERTY("RebootToBootLoaderEntry", "s", property_get_reboot_to_boot_loader_entry, 0, 0),
3625         SD_BUS_PROPERTY("BootLoaderEntries", "as", property_get_boot_loader_entries, 0, SD_BUS_VTABLE_PROPERTY_CONST),
3626         SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3627         SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3628         SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3629         SD_BUS_PROPERTY("BlockInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3630         SD_BUS_PROPERTY("DelayInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3631         SD_BUS_PROPERTY("InhibitDelayMaxUSec", "t", NULL, offsetof(Manager, inhibit_delay_max), SD_BUS_VTABLE_PROPERTY_CONST),
3632         SD_BUS_PROPERTY("UserStopDelayUSec", "t", NULL, offsetof(Manager, user_stop_delay), SD_BUS_VTABLE_PROPERTY_CONST),
3633         SD_BUS_PROPERTY("SleepOperation", "as", property_get_sleep_operations, 0, SD_BUS_VTABLE_PROPERTY_CONST),
3634         SD_BUS_PROPERTY("HandlePowerKey", "s", property_get_handle_action, offsetof(Manager, handle_power_key), SD_BUS_VTABLE_PROPERTY_CONST),
3635         SD_BUS_PROPERTY("HandlePowerKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_power_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3636         SD_BUS_PROPERTY("HandleRebootKey", "s", property_get_handle_action, offsetof(Manager, handle_reboot_key), SD_BUS_VTABLE_PROPERTY_CONST),
3637         SD_BUS_PROPERTY("HandleRebootKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_reboot_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3638         SD_BUS_PROPERTY("HandleSuspendKey", "s", property_get_handle_action, offsetof(Manager, handle_suspend_key), SD_BUS_VTABLE_PROPERTY_CONST),
3639         SD_BUS_PROPERTY("HandleSuspendKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_suspend_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3640         SD_BUS_PROPERTY("HandleHibernateKey", "s", property_get_handle_action, offsetof(Manager, handle_hibernate_key), SD_BUS_VTABLE_PROPERTY_CONST),
3641         SD_BUS_PROPERTY("HandleHibernateKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_hibernate_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3642         SD_BUS_PROPERTY("HandleLidSwitch", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch), SD_BUS_VTABLE_PROPERTY_CONST),
3643         SD_BUS_PROPERTY("HandleLidSwitchExternalPower", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch_ep), SD_BUS_VTABLE_PROPERTY_CONST),
3644         SD_BUS_PROPERTY("HandleLidSwitchDocked", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch_docked), SD_BUS_VTABLE_PROPERTY_CONST),
3645         SD_BUS_PROPERTY("HoldoffTimeoutUSec", "t", NULL, offsetof(Manager, holdoff_timeout_usec), SD_BUS_VTABLE_PROPERTY_CONST),
3646         SD_BUS_PROPERTY("IdleAction", "s", property_get_handle_action, offsetof(Manager, idle_action), SD_BUS_VTABLE_PROPERTY_CONST),
3647         SD_BUS_PROPERTY("IdleActionUSec", "t", NULL, offsetof(Manager, idle_action_usec), SD_BUS_VTABLE_PROPERTY_CONST),
3648         SD_BUS_PROPERTY("PreparingForShutdown", "b", property_get_preparing, 0, 0),
3649         SD_BUS_PROPERTY("PreparingForSleep", "b", property_get_preparing, 0, 0),
3650         SD_BUS_PROPERTY("ScheduledShutdown", "(st)", property_get_scheduled_shutdown, 0, 0),
3651         SD_BUS_PROPERTY("Docked", "b", property_get_docked, 0, 0),
3652         SD_BUS_PROPERTY("LidClosed", "b", property_get_lid_closed, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3653         SD_BUS_PROPERTY("OnExternalPower", "b", property_get_on_external_power, 0, 0),
3654         SD_BUS_PROPERTY("RemoveIPC", "b", bus_property_get_bool, offsetof(Manager, remove_ipc), SD_BUS_VTABLE_PROPERTY_CONST),
3655         SD_BUS_PROPERTY("RuntimeDirectorySize", "t", NULL, offsetof(Manager, runtime_dir_size), SD_BUS_VTABLE_PROPERTY_CONST),
3656         SD_BUS_PROPERTY("RuntimeDirectoryInodesMax", "t", NULL, offsetof(Manager, runtime_dir_inodes), SD_BUS_VTABLE_PROPERTY_CONST),
3657         SD_BUS_PROPERTY("InhibitorsMax", "t", NULL, offsetof(Manager, inhibitors_max), SD_BUS_VTABLE_PROPERTY_CONST),
3658         SD_BUS_PROPERTY("NCurrentInhibitors", "t", property_get_hashmap_size, offsetof(Manager, inhibitors), 0),
3659         SD_BUS_PROPERTY("SessionsMax", "t", NULL, offsetof(Manager, sessions_max), SD_BUS_VTABLE_PROPERTY_CONST),
3660         SD_BUS_PROPERTY("NCurrentSessions", "t", property_get_hashmap_size, offsetof(Manager, sessions), 0),
3661         SD_BUS_PROPERTY("UserTasksMax", "t", property_get_compat_user_tasks_max, 0, SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
3662         SD_BUS_PROPERTY("StopIdleSessionUSec", "t", NULL, offsetof(Manager, stop_idle_session_usec), SD_BUS_VTABLE_PROPERTY_CONST),
3663
3664         SD_BUS_METHOD_WITH_ARGS("GetSession",
3665                                 SD_BUS_ARGS("s", session_id),
3666                                 SD_BUS_RESULT("o", object_path),
3667                                 method_get_session,
3668                                 SD_BUS_VTABLE_UNPRIVILEGED),
3669         SD_BUS_METHOD_WITH_ARGS("GetSessionByPID",
3670                                 SD_BUS_ARGS("u", pid),
3671                                 SD_BUS_RESULT("o", object_path),
3672                                 method_get_session_by_pid,
3673                                 SD_BUS_VTABLE_UNPRIVILEGED),
3674         SD_BUS_METHOD_WITH_ARGS("GetUser",
3675                                 SD_BUS_ARGS("u", uid),
3676                                 SD_BUS_RESULT("o", object_path),
3677                                 method_get_user,
3678                                 SD_BUS_VTABLE_UNPRIVILEGED),
3679         SD_BUS_METHOD_WITH_ARGS("GetUserByPID",
3680                                 SD_BUS_ARGS("u", pid),
3681                                 SD_BUS_RESULT("o", object_path),
3682                                 method_get_user_by_pid,
3683                                 SD_BUS_VTABLE_UNPRIVILEGED),
3684         SD_BUS_METHOD_WITH_ARGS("GetSeat",
3685                                 SD_BUS_ARGS("s", seat_id),
3686                                 SD_BUS_RESULT("o", object_path),
3687                                 method_get_seat,
3688                                 SD_BUS_VTABLE_UNPRIVILEGED),
3689         SD_BUS_METHOD_WITH_ARGS("ListSessions",
3690                                 SD_BUS_NO_ARGS,
3691                                 SD_BUS_RESULT("a(susso)", sessions),
3692                                 method_list_sessions,
3693                                 SD_BUS_VTABLE_UNPRIVILEGED),
3694         SD_BUS_METHOD_WITH_ARGS("ListSessionsEx",
3695                                 SD_BUS_NO_ARGS,
3696                                 SD_BUS_RESULT("a(sussussbto)", sessions),
3697                                 method_list_sessions_ex,
3698                                 SD_BUS_VTABLE_UNPRIVILEGED),
3699         SD_BUS_METHOD_WITH_ARGS("ListUsers",
3700                                 SD_BUS_NO_ARGS,
3701                                 SD_BUS_RESULT("a(uso)", users),
3702                                 method_list_users,
3703                                 SD_BUS_VTABLE_UNPRIVILEGED),
3704         SD_BUS_METHOD_WITH_ARGS("ListSeats",
3705                                 SD_BUS_NO_ARGS,
3706                                 SD_BUS_RESULT("a(so)", seats),
3707                                 method_list_seats,
3708                                 SD_BUS_VTABLE_UNPRIVILEGED),
3709         SD_BUS_METHOD_WITH_ARGS("ListInhibitors",
3710                                 SD_BUS_NO_ARGS,
3711                                 SD_BUS_RESULT("a(ssssuu)", inhibitors),
3712                                 method_list_inhibitors,
3713                                 SD_BUS_VTABLE_UNPRIVILEGED),
3714         SD_BUS_METHOD_WITH_ARGS("CreateSession",
3715                                 SD_BUS_ARGS("u", uid,
3716                                             "u", pid,
3717                                             "s", service,
3718                                             "s", type,
3719                                             "s", class,
3720                                             "s", desktop,
3721                                             "s", seat_id,
3722                                             "u", vtnr,
3723                                             "s", tty,
3724                                             "s", display,
3725                                             "b", remote,
3726                                             "s", remote_user,
3727                                             "s", remote_host,
3728                                             "a(sv)", properties),
3729                                 SD_BUS_RESULT("s", session_id,
3730                                               "o", object_path,
3731                                               "s", runtime_path,
3732                                               "h", fifo_fd,
3733                                               "u", uid,
3734                                               "s", seat_id,
3735                                               "u", vtnr,
3736                                               "b", existing),
3737                                 method_create_session,
3738                                 0),
3739         SD_BUS_METHOD_WITH_ARGS("CreateSessionWithPIDFD",
3740                                 SD_BUS_ARGS("u", uid,
3741                                             "h", pidfd,
3742                                             "s", service,
3743                                             "s", type,
3744                                             "s", class,
3745                                             "s", desktop,
3746                                             "s", seat_id,
3747                                             "u", vtnr,
3748                                             "s", tty,
3749                                             "s", display,
3750                                             "b", remote,
3751                                             "s", remote_user,
3752                                             "s", remote_host,
3753                                             "t", flags,
3754                                             "a(sv)", properties),
3755                                 SD_BUS_RESULT("s", session_id,
3756                                               "o", object_path,
3757                                               "s", runtime_path,
3758                                               "h", fifo_fd,
3759                                               "u", uid,
3760                                               "s", seat_id,
3761                                               "u", vtnr,
3762                                               "b", existing),
3763                                 method_create_session_pidfd,
3764                                 0),
3765         SD_BUS_METHOD_WITH_ARGS("ReleaseSession",
3766                                 SD_BUS_ARGS("s", session_id),
3767                                 SD_BUS_NO_RESULT,
3768                                 method_release_session,
3769                                 0),
3770         SD_BUS_METHOD_WITH_ARGS("ActivateSession",
3771                                 SD_BUS_ARGS("s", session_id),
3772                                 SD_BUS_NO_RESULT,
3773                                 method_activate_session,
3774                                 SD_BUS_VTABLE_UNPRIVILEGED),
3775         SD_BUS_METHOD_WITH_ARGS("ActivateSessionOnSeat",
3776                                 SD_BUS_ARGS("s", session_id, "s", seat_id),
3777                                 SD_BUS_NO_RESULT,
3778                                 method_activate_session_on_seat,
3779                                 SD_BUS_VTABLE_UNPRIVILEGED),
3780         SD_BUS_METHOD_WITH_ARGS("LockSession",
3781                                 SD_BUS_ARGS("s", session_id),
3782                                 SD_BUS_NO_RESULT,
3783                                 method_lock_session,
3784                                 SD_BUS_VTABLE_UNPRIVILEGED),
3785         SD_BUS_METHOD_WITH_ARGS("UnlockSession",
3786                                 SD_BUS_ARGS("s", session_id),
3787                                 SD_BUS_NO_RESULT,
3788                                 method_lock_session,
3789                                 SD_BUS_VTABLE_UNPRIVILEGED),
3790         SD_BUS_METHOD("LockSessions",
3791                       NULL,
3792                       NULL,
3793                       method_lock_sessions,
3794                       SD_BUS_VTABLE_UNPRIVILEGED),
3795         SD_BUS_METHOD("UnlockSessions",
3796                       NULL,
3797                       NULL,
3798                       method_lock_sessions,
3799                       SD_BUS_VTABLE_UNPRIVILEGED),
3800         SD_BUS_METHOD_WITH_ARGS("KillSession",
3801                                 SD_BUS_ARGS("s", session_id, "s", who, "i", signal_number),
3802                                 SD_BUS_NO_RESULT,
3803                                 method_kill_session,
3804                                 SD_BUS_VTABLE_UNPRIVILEGED),
3805         SD_BUS_METHOD_WITH_ARGS("KillUser",
3806                                 SD_BUS_ARGS("u", uid, "i", signal_number),
3807                                 SD_BUS_NO_RESULT,
3808                                 method_kill_user,
3809                                 SD_BUS_VTABLE_UNPRIVILEGED),
3810         SD_BUS_METHOD_WITH_ARGS("TerminateSession",
3811                                 SD_BUS_ARGS("s", session_id),
3812                                 SD_BUS_NO_RESULT,
3813                                 method_terminate_session,
3814                                 SD_BUS_VTABLE_UNPRIVILEGED),
3815         SD_BUS_METHOD_WITH_ARGS("TerminateUser",
3816                                 SD_BUS_ARGS("u", uid),
3817                                 SD_BUS_NO_RESULT,
3818                                 method_terminate_user,
3819                                 SD_BUS_VTABLE_UNPRIVILEGED),
3820         SD_BUS_METHOD_WITH_ARGS("TerminateSeat",
3821                                 SD_BUS_ARGS("s", seat_id),
3822                                 SD_BUS_NO_RESULT,
3823                                 method_terminate_seat,
3824                                 SD_BUS_VTABLE_UNPRIVILEGED),
3825         SD_BUS_METHOD_WITH_ARGS("SetUserLinger",
3826                                 SD_BUS_ARGS("u", uid, "b", enable, "b", interactive),
3827                                 SD_BUS_NO_RESULT,
3828                                 method_set_user_linger,
3829                                 SD_BUS_VTABLE_UNPRIVILEGED),
3830         SD_BUS_METHOD_WITH_ARGS("AttachDevice",
3831                                 SD_BUS_ARGS("s", seat_id, "s", sysfs_path, "b", interactive),
3832                                 SD_BUS_NO_RESULT,
3833                                 method_attach_device,
3834                                 SD_BUS_VTABLE_UNPRIVILEGED),
3835         SD_BUS_METHOD_WITH_ARGS("FlushDevices",
3836                                 SD_BUS_ARGS("b", interactive),
3837                                 SD_BUS_NO_RESULT,
3838                                 method_flush_devices,
3839                                 SD_BUS_VTABLE_UNPRIVILEGED),
3840         SD_BUS_METHOD_WITH_ARGS("PowerOff",
3841                                 SD_BUS_ARGS("b", interactive),
3842                                 SD_BUS_NO_RESULT,
3843                                 method_poweroff,
3844                                 SD_BUS_VTABLE_UNPRIVILEGED),
3845         SD_BUS_METHOD_WITH_ARGS("PowerOffWithFlags",
3846                                 SD_BUS_ARGS("t", flags),
3847                                 SD_BUS_NO_RESULT,
3848                                 method_poweroff,
3849                                 SD_BUS_VTABLE_UNPRIVILEGED),
3850         SD_BUS_METHOD_WITH_ARGS("Reboot",
3851                                 SD_BUS_ARGS("b", interactive),
3852                                 SD_BUS_NO_RESULT,
3853                                 method_reboot,
3854                                 SD_BUS_VTABLE_UNPRIVILEGED),
3855         SD_BUS_METHOD_WITH_ARGS("RebootWithFlags",
3856                                 SD_BUS_ARGS("t", flags),
3857                                 SD_BUS_NO_RESULT,
3858                                 method_reboot,
3859                                 SD_BUS_VTABLE_UNPRIVILEGED),
3860         SD_BUS_METHOD_WITH_ARGS("Halt",
3861                                 SD_BUS_ARGS("b", interactive),
3862                                 SD_BUS_NO_RESULT,
3863                                 method_halt,
3864                                 SD_BUS_VTABLE_UNPRIVILEGED),
3865         SD_BUS_METHOD_WITH_ARGS("HaltWithFlags",
3866                                 SD_BUS_ARGS("t", flags),
3867                                 SD_BUS_NO_RESULT,
3868                                 method_halt,
3869                                 SD_BUS_VTABLE_UNPRIVILEGED),
3870         SD_BUS_METHOD_WITH_ARGS("Suspend",
3871                                 SD_BUS_ARGS("b", interactive),
3872                                 SD_BUS_NO_RESULT,
3873                                 method_suspend,
3874                                 SD_BUS_VTABLE_UNPRIVILEGED),
3875         SD_BUS_METHOD_WITH_ARGS("SuspendWithFlags",
3876                                 SD_BUS_ARGS("t", flags),
3877                                 SD_BUS_NO_RESULT,
3878                                 method_suspend,
3879                                 SD_BUS_VTABLE_UNPRIVILEGED),
3880         SD_BUS_METHOD_WITH_ARGS("Hibernate",
3881                                 SD_BUS_ARGS("b", interactive),
3882                                 SD_BUS_NO_RESULT,
3883                                 method_hibernate,
3884                                 SD_BUS_VTABLE_UNPRIVILEGED),
3885         SD_BUS_METHOD_WITH_ARGS("HibernateWithFlags",
3886                                 SD_BUS_ARGS("t", flags),
3887                                 SD_BUS_NO_RESULT,
3888                                 method_hibernate,
3889                                 SD_BUS_VTABLE_UNPRIVILEGED),
3890         SD_BUS_METHOD_WITH_ARGS("HybridSleep",
3891                                 SD_BUS_ARGS("b", interactive),
3892                                 SD_BUS_NO_RESULT,
3893                                 method_hybrid_sleep,
3894                                 SD_BUS_VTABLE_UNPRIVILEGED),
3895         SD_BUS_METHOD_WITH_ARGS("HybridSleepWithFlags",
3896                                 SD_BUS_ARGS("t", flags),
3897                                 SD_BUS_NO_RESULT,
3898                                 method_hybrid_sleep,
3899                                 SD_BUS_VTABLE_UNPRIVILEGED),
3900         SD_BUS_METHOD_WITH_ARGS("SuspendThenHibernate",
3901                                 SD_BUS_ARGS("b", interactive),
3902                                 SD_BUS_NO_RESULT,
3903                                 method_suspend_then_hibernate,
3904                                 SD_BUS_VTABLE_UNPRIVILEGED),
3905         SD_BUS_METHOD_WITH_ARGS("SuspendThenHibernateWithFlags",
3906                                 SD_BUS_ARGS("t", flags),
3907                                 SD_BUS_NO_RESULT,
3908                                 method_suspend_then_hibernate,
3909                                 SD_BUS_VTABLE_UNPRIVILEGED),
3910         SD_BUS_METHOD_WITH_ARGS("Sleep",
3911                                 SD_BUS_ARGS("t", flags),
3912                                 SD_BUS_NO_RESULT,
3913                                 method_sleep,
3914                                 SD_BUS_VTABLE_UNPRIVILEGED),
3915         SD_BUS_METHOD_WITH_ARGS("CanPowerOff",
3916                                 SD_BUS_NO_ARGS,
3917                                 SD_BUS_RESULT("s", result),
3918                                 method_can_poweroff,
3919                                 SD_BUS_VTABLE_UNPRIVILEGED),
3920         SD_BUS_METHOD_WITH_ARGS("CanReboot",
3921                                 SD_BUS_NO_ARGS,
3922                                 SD_BUS_RESULT("s", result),
3923                                 method_can_reboot,
3924                                 SD_BUS_VTABLE_UNPRIVILEGED),
3925         SD_BUS_METHOD_WITH_ARGS("CanHalt",
3926                                 SD_BUS_NO_ARGS,
3927                                 SD_BUS_RESULT("s", result),
3928                                 method_can_halt,
3929                                 SD_BUS_VTABLE_UNPRIVILEGED),
3930         SD_BUS_METHOD_WITH_ARGS("CanSuspend",
3931                                 SD_BUS_NO_ARGS,
3932                                 SD_BUS_RESULT("s", result),
3933                                 method_can_suspend,
3934                                 SD_BUS_VTABLE_UNPRIVILEGED),
3935         SD_BUS_METHOD_WITH_ARGS("CanHibernate",
3936                                 SD_BUS_NO_ARGS,
3937                                 SD_BUS_RESULT("s", result),
3938                                 method_can_hibernate,
3939                                 SD_BUS_VTABLE_UNPRIVILEGED),
3940         SD_BUS_METHOD_WITH_ARGS("CanHybridSleep",
3941                                 SD_BUS_NO_ARGS,
3942                                 SD_BUS_RESULT("s", result),
3943                                 method_can_hybrid_sleep,
3944                                 SD_BUS_VTABLE_UNPRIVILEGED),
3945         SD_BUS_METHOD_WITH_ARGS("CanSuspendThenHibernate",
3946                                 SD_BUS_NO_ARGS,
3947                                 SD_BUS_RESULT("s", result),
3948                                 method_can_suspend_then_hibernate,
3949                                 SD_BUS_VTABLE_UNPRIVILEGED),
3950         SD_BUS_METHOD_WITH_ARGS("CanSleep",
3951                                 SD_BUS_NO_ARGS,
3952                                 SD_BUS_RESULT("s", result),
3953                                 method_can_sleep,
3954                                 SD_BUS_VTABLE_UNPRIVILEGED),
3955         SD_BUS_METHOD_WITH_ARGS("ScheduleShutdown",
3956                                 SD_BUS_ARGS("s", type, "t", usec),
3957                                 SD_BUS_NO_RESULT,
3958                                 method_schedule_shutdown,
3959                                 SD_BUS_VTABLE_UNPRIVILEGED),
3960         SD_BUS_METHOD_WITH_ARGS("CancelScheduledShutdown",
3961                                 SD_BUS_NO_ARGS,
3962                                 SD_BUS_RESULT("b", cancelled),
3963                                 method_cancel_scheduled_shutdown,
3964                                 SD_BUS_VTABLE_UNPRIVILEGED),
3965         SD_BUS_METHOD_WITH_ARGS("Inhibit",
3966                                 SD_BUS_ARGS("s", what, "s", who, "s", why, "s", mode),
3967                                 SD_BUS_RESULT("h", pipe_fd),
3968                                 method_inhibit,
3969                                 SD_BUS_VTABLE_UNPRIVILEGED),
3970         SD_BUS_METHOD_WITH_ARGS("CanRebootParameter",
3971                                 SD_BUS_NO_ARGS,
3972                                 SD_BUS_RESULT("s", result),
3973                                 method_can_reboot_parameter,
3974                                 SD_BUS_VTABLE_UNPRIVILEGED),
3975         SD_BUS_METHOD_WITH_ARGS("SetRebootParameter",
3976                                 SD_BUS_ARGS("s", parameter),
3977                                 SD_BUS_NO_RESULT,
3978                                 method_set_reboot_parameter,
3979                                 SD_BUS_VTABLE_UNPRIVILEGED),
3980         SD_BUS_METHOD_WITH_ARGS("CanRebootToFirmwareSetup",
3981                                 SD_BUS_NO_ARGS,
3982                                 SD_BUS_RESULT("s", result),
3983                                 method_can_reboot_to_firmware_setup,
3984                                 SD_BUS_VTABLE_UNPRIVILEGED),
3985         SD_BUS_METHOD_WITH_ARGS("SetRebootToFirmwareSetup",
3986                                 SD_BUS_ARGS("b", enable),
3987                                 SD_BUS_NO_RESULT,
3988                                 method_set_reboot_to_firmware_setup,
3989                                 SD_BUS_VTABLE_UNPRIVILEGED),
3990         SD_BUS_METHOD_WITH_ARGS("CanRebootToBootLoaderMenu",
3991                                 SD_BUS_NO_ARGS,
3992                                 SD_BUS_RESULT("s", result),
3993                                 method_can_reboot_to_boot_loader_menu,
3994                                 SD_BUS_VTABLE_UNPRIVILEGED),
3995         SD_BUS_METHOD_WITH_ARGS("SetRebootToBootLoaderMenu",
3996                                 SD_BUS_ARGS("t", timeout),
3997                                 SD_BUS_NO_RESULT,
3998                                 method_set_reboot_to_boot_loader_menu,
3999                                 SD_BUS_VTABLE_UNPRIVILEGED),
4000         SD_BUS_METHOD_WITH_ARGS("CanRebootToBootLoaderEntry",
4001                                 SD_BUS_NO_ARGS,
4002                                 SD_BUS_RESULT("s", result),
4003                                 method_can_reboot_to_boot_loader_entry,
4004                                 SD_BUS_VTABLE_UNPRIVILEGED),
4005         SD_BUS_METHOD_WITH_ARGS("SetRebootToBootLoaderEntry",
4006                                 SD_BUS_ARGS("s", boot_loader_entry),
4007                                 SD_BUS_NO_RESULT,
4008                                 method_set_reboot_to_boot_loader_entry,
4009                                 SD_BUS_VTABLE_UNPRIVILEGED),
4010         SD_BUS_METHOD_WITH_ARGS("SetWallMessage",
4011                                 SD_BUS_ARGS("s", wall_message, "b", enable),
4012                                 SD_BUS_NO_RESULT,
4013                                 method_set_wall_message,
4014                                 SD_BUS_VTABLE_UNPRIVILEGED),
4015
4016         SD_BUS_SIGNAL_WITH_ARGS("SessionNew",
4017                                 SD_BUS_ARGS("s", session_id, "o", object_path),
4018                                 0),
4019         SD_BUS_SIGNAL_WITH_ARGS("SessionRemoved",
4020                                 SD_BUS_ARGS("s", session_id, "o", object_path),
4021                                 0),
4022         SD_BUS_SIGNAL_WITH_ARGS("UserNew",
4023                                 SD_BUS_ARGS("u", uid, "o", object_path),
4024                                 0),
4025         SD_BUS_SIGNAL_WITH_ARGS("UserRemoved",
4026                                 SD_BUS_ARGS("u", uid, "o", object_path),
4027                                 0),
4028         SD_BUS_SIGNAL_WITH_ARGS("SeatNew",
4029                                 SD_BUS_ARGS("s", seat_id, "o", object_path),
4030                                 0),
4031         SD_BUS_SIGNAL_WITH_ARGS("SeatRemoved",
4032                                 SD_BUS_ARGS("s", seat_id, "o", object_path),
4033                                 0),
4034         SD_BUS_SIGNAL_WITH_ARGS("PrepareForShutdown",
4035                                 SD_BUS_ARGS("b", start),
4036                                 0),
4037         SD_BUS_SIGNAL_WITH_ARGS("PrepareForShutdownWithMetadata",
4038                                 SD_BUS_ARGS("b", start, "a{sv}", metadata),
4039                                 0),
4040         SD_BUS_SIGNAL_WITH_ARGS("PrepareForSleep",
4041                                 SD_BUS_ARGS("b", start),
4042                                 0),
4043
4044         SD_BUS_VTABLE_END
4045 };
4046
4047 const BusObjectImplementation manager_object = {
4048         "/org/freedesktop/login1",
4049         "org.freedesktop.login1.Manager",
4050         .vtables = BUS_VTABLES(manager_vtable),
4051         .children = BUS_IMPLEMENTATIONS(&seat_object,
4052                                         &session_object,
4053                                         &user_object),
4054 };
4055
4056 static int session_jobs_reply(Session *s, uint32_t jid, const char *unit, const char *result) {
4057         assert(s);
4058         assert(unit);
4059
4060         if (!s->started)
4061                 return 0;
4062
4063         if (result && !streq(result, "done")) {
4064                 _cleanup_(sd_bus_error_free) sd_bus_error e = SD_BUS_ERROR_NULL;
4065
4066                 sd_bus_error_setf(&e, BUS_ERROR_JOB_FAILED,
4067                                   "Job %u for unit '%s' failed with '%s'", jid, unit, result);
4068                 return session_send_create_reply(s, &e);
4069         }
4070
4071         return session_send_create_reply(s, NULL);
4072 }
4073
4074 int match_job_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
4075         const char *path, *result, *unit;
4076         Manager *m = ASSERT_PTR(userdata);
4077         Session *session;
4078         uint32_t id;
4079         User *user;
4080         int r;
4081
4082         assert(message);
4083
4084         r = sd_bus_message_read(message, "uoss", &id, &path, &unit, &result);
4085         if (r < 0) {
4086                 bus_log_parse_error(r);
4087                 return 0;
4088         }
4089
4090         if (m->action_job && streq(m->action_job, path)) {
4091                 assert(m->delayed_action);
4092                 log_info("Operation '%s' finished.", handle_action_to_string(m->delayed_action->handle));
4093
4094                 /* Tell people that they now may take a lock again */
4095                 (void) send_prepare_for(m, m->delayed_action, false);
4096
4097                 m->action_job = mfree(m->action_job);
4098                 m->delayed_action = NULL;
4099                 return 0;
4100         }
4101
4102         session = hashmap_get(m->session_units, unit);
4103         if (session) {
4104                 if (streq_ptr(path, session->scope_job)) {
4105                         session->scope_job = mfree(session->scope_job);
4106                         (void) session_jobs_reply(session, id, unit, result);
4107
4108                         session_save(session);
4109                         user_save(session->user);
4110                 }
4111
4112                 session_add_to_gc_queue(session);
4113         }
4114
4115         user = hashmap_get(m->user_units, unit);
4116         if (user) {
4117                 if (streq_ptr(path, user->service_job)) {
4118                         user->service_job = mfree(user->service_job);
4119
4120                         LIST_FOREACH(sessions_by_user, s, user->sessions)
4121                                 (void) session_jobs_reply(s, id, unit, NULL /* don't propagate user service failures to the client */);
4122
4123                         user_save(user);
4124                 }
4125
4126                 user_add_to_gc_queue(user);
4127         }
4128
4129         return 0;
4130 }
4131
4132 int match_unit_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
4133         const char *path, *unit;
4134         Manager *m = ASSERT_PTR(userdata);
4135         Session *session;
4136         User *user;
4137         int r;
4138
4139         assert(message);
4140
4141         r = sd_bus_message_read(message, "so", &unit, &path);
4142         if (r < 0) {
4143                 bus_log_parse_error(r);
4144                 return 0;
4145         }
4146
4147         session = hashmap_get(m->session_units, unit);
4148         if (session)
4149                 session_add_to_gc_queue(session);
4150
4151         user = hashmap_get(m->user_units, unit);
4152         if (user)
4153                 user_add_to_gc_queue(user);
4154
4155         return 0;
4156 }
4157
4158 int match_properties_changed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
4159         _cleanup_free_ char *unit = NULL;
4160         Manager *m = ASSERT_PTR(userdata);
4161         const char *path;
4162         Session *session;
4163         User *user;
4164         int r;
4165
4166         assert(message);
4167
4168         path = sd_bus_message_get_path(message);
4169         if (!path)
4170                 return 0;
4171
4172         r = unit_name_from_dbus_path(path, &unit);
4173         if (r == -EINVAL) /* not a unit */
4174                 return 0;
4175         if (r < 0) {
4176                 log_oom();
4177                 return 0;
4178         }
4179
4180         session = hashmap_get(m->session_units, unit);
4181         if (session)
4182                 session_add_to_gc_queue(session);
4183
4184         user = hashmap_get(m->user_units, unit);
4185         if (user)
4186                 user_add_to_gc_queue(user);
4187
4188         return 0;
4189 }
4190
4191 int match_reloading(sd_bus_message *message, void *userdata, sd_bus_error *error) {
4192         Manager *m = ASSERT_PTR(userdata);
4193         Session *session;
4194         int b, r;
4195
4196         assert(message);
4197
4198         r = sd_bus_message_read(message, "b", &b);
4199         if (r < 0) {
4200                 bus_log_parse_error(r);
4201                 return 0;
4202         }
4203
4204         if (b)
4205                 return 0;
4206
4207         /* systemd finished reloading, let's recheck all our sessions */
4208         log_debug("System manager has been reloaded, rechecking sessions...");
4209
4210         HASHMAP_FOREACH(session, m->sessions)
4211                 session_add_to_gc_queue(session);
4212
4213         return 0;
4214 }
4215
4216 int manager_send_changed(Manager *manager, const char *property, ...) {
4217         char **l;
4218
4219         assert(manager);
4220
4221         l = strv_from_stdarg_alloca(property);
4222
4223         return sd_bus_emit_properties_changed_strv(
4224                         manager->bus,
4225                         "/org/freedesktop/login1",
4226                         "org.freedesktop.login1.Manager",
4227                         l);
4228 }
4229
4230 static int strdup_job(sd_bus_message *reply, char **job) {
4231         const char *j;
4232         char *copy;
4233         int r;
4234
4235         r = sd_bus_message_read(reply, "o", &j);
4236         if (r < 0)
4237                 return r;
4238
4239         copy = strdup(j);
4240         if (!copy)
4241                 return -ENOMEM;
4242
4243         *job = copy;
4244         return 1;
4245 }
4246
4247 int manager_start_scope(
4248                 Manager *manager,
4249                 const char *scope,
4250                 const PidRef *pidref,
4251                 const char *slice,
4252                 const char *description,
4253                 char **wants,
4254                 char **after,
4255                 const char *requires_mounts_for,
4256                 sd_bus_message *more_properties,
4257                 sd_bus_error *error,
4258                 char **job) {
4259
4260         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
4261         int r;
4262
4263         assert(manager);
4264         assert(scope);
4265         assert(pidref_is_set(pidref));
4266         assert(job);
4267
4268         r = bus_message_new_method_call(manager->bus, &m, bus_systemd_mgr, "StartTransientUnit");
4269         if (r < 0)
4270                 return r;
4271
4272         r = sd_bus_message_append(m, "ss", strempty(scope), "fail");
4273         if (r < 0)
4274                 return r;
4275
4276         r = sd_bus_message_open_container(m, 'a', "(sv)");
4277         if (r < 0)
4278                 return r;
4279
4280         if (!isempty(slice)) {
4281                 r = sd_bus_message_append(m, "(sv)", "Slice", "s", slice);
4282                 if (r < 0)
4283                         return r;
4284         }
4285
4286         if (!isempty(description)) {
4287                 r = sd_bus_message_append(m, "(sv)", "Description", "s", description);
4288                 if (r < 0)
4289                         return r;
4290         }
4291
4292         STRV_FOREACH(i, wants) {
4293                 r = sd_bus_message_append(m, "(sv)", "Wants", "as", 1, *i);
4294                 if (r < 0)
4295                         return r;
4296         }
4297
4298         STRV_FOREACH(i, after) {
4299                 r = sd_bus_message_append(m, "(sv)", "After", "as", 1, *i);
4300                 if (r < 0)
4301                         return r;
4302         }
4303
4304         if (!empty_or_root(requires_mounts_for)) {
4305                 r = sd_bus_message_append(m, "(sv)", "RequiresMountsFor", "as", 1, requires_mounts_for);
4306                 if (r < 0)
4307                         return r;
4308         }
4309
4310         /* Make sure that the session shells are terminated with SIGHUP since bash and friends tend to ignore
4311          * SIGTERM */
4312         r = sd_bus_message_append(m, "(sv)", "SendSIGHUP", "b", true);
4313         if (r < 0)
4314                 return r;
4315
4316         r = bus_append_scope_pidref(m, pidref);
4317         if (r < 0)
4318                 return r;
4319
4320         /* For login session scopes, if a process is OOM killed by the kernel, *don't* terminate the rest of
4321            the scope */
4322         r = sd_bus_message_append(m, "(sv)", "OOMPolicy", "s", "continue");
4323         if (r < 0)
4324                 return r;
4325
4326         /* disable TasksMax= for the session scope, rely on the slice setting for it */
4327         r = sd_bus_message_append(m, "(sv)", "TasksMax", "t", UINT64_MAX);
4328         if (r < 0)
4329                 return bus_log_create_error(r);
4330
4331         if (more_properties) {
4332                 /* If TasksMax also appears here, it will overwrite the default value set above */
4333                 r = sd_bus_message_copy(m, more_properties, true);
4334                 if (r < 0)
4335                         return r;
4336         }
4337
4338         r = sd_bus_message_close_container(m);
4339         if (r < 0)
4340                 return r;
4341
4342         r = sd_bus_message_append(m, "a(sa(sv))", 0);
4343         if (r < 0)
4344                 return r;
4345
4346         r = sd_bus_call(manager->bus, m, 0, error, &reply);
4347         if (r < 0)
4348                 return r;
4349
4350         return strdup_job(reply, job);
4351 }
4352
4353 int manager_start_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) {
4354         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4355         int r;
4356
4357         assert(manager);
4358         assert(unit);
4359         assert(job);
4360
4361         r = bus_call_method(
4362                         manager->bus,
4363                         bus_systemd_mgr,
4364                         "StartUnit",
4365                         error,
4366                         &reply,
4367                         "ss", unit, "replace");
4368         if (r < 0)
4369                 return r;
4370
4371         return strdup_job(reply, job);
4372 }
4373
4374 int manager_stop_unit(Manager *manager, const char *unit, const char *job_mode, sd_bus_error *error, char **ret_job) {
4375         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4376         int r;
4377
4378         assert(manager);
4379         assert(unit);
4380         assert(ret_job);
4381
4382         r = bus_call_method(
4383                         manager->bus,
4384                         bus_systemd_mgr,
4385                         "StopUnit",
4386                         error,
4387                         &reply,
4388                         "ss", unit, job_mode ?: "fail");
4389         if (r < 0) {
4390                 if (sd_bus_error_has_names(error, BUS_ERROR_NO_SUCH_UNIT,
4391                                                   BUS_ERROR_LOAD_FAILED)) {
4392
4393                         *ret_job = NULL;
4394                         sd_bus_error_free(error);
4395                         return 0;
4396                 }
4397
4398                 return r;
4399         }
4400
4401         return strdup_job(reply, ret_job);
4402 }
4403
4404 int manager_abandon_scope(Manager *manager, const char *scope, sd_bus_error *ret_error) {
4405         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4406         _cleanup_free_ char *path = NULL;
4407         int r;
4408
4409         assert(manager);
4410         assert(scope);
4411
4412         path = unit_dbus_path_from_name(scope);
4413         if (!path)
4414                 return -ENOMEM;
4415
4416         r = sd_bus_call_method(
4417                         manager->bus,
4418                         "org.freedesktop.systemd1",
4419                         path,
4420                         "org.freedesktop.systemd1.Scope",
4421                         "Abandon",
4422                         &error,
4423                         NULL,
4424                         NULL);
4425         if (r < 0) {
4426                 if (sd_bus_error_has_names(&error, BUS_ERROR_NO_SUCH_UNIT,
4427                                                    BUS_ERROR_LOAD_FAILED,
4428                                                    BUS_ERROR_SCOPE_NOT_RUNNING))
4429                         return 0;
4430
4431                 sd_bus_error_move(ret_error, &error);
4432                 return r;
4433         }
4434
4435         return 1;
4436 }
4437
4438 int manager_kill_unit(Manager *manager, const char *unit, KillWho who, int signo, sd_bus_error *error) {
4439         assert(manager);
4440         assert(unit);
4441
4442         return bus_call_method(
4443                         manager->bus,
4444                         bus_systemd_mgr,
4445                         "KillUnit",
4446                         error,
4447                         NULL,
4448                         "ssi", unit, who == KILL_LEADER ? "main" : "all", signo);
4449 }
4450
4451 int manager_unit_is_active(Manager *manager, const char *unit, sd_bus_error *ret_error) {
4452         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4453         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4454         _cleanup_free_ char *path = NULL;
4455         const char *state;
4456         int r;
4457
4458         assert(manager);
4459         assert(unit);
4460
4461         path = unit_dbus_path_from_name(unit);
4462         if (!path)
4463                 return -ENOMEM;
4464
4465         r = sd_bus_get_property(
4466                         manager->bus,
4467                         "org.freedesktop.systemd1",
4468                         path,
4469                         "org.freedesktop.systemd1.Unit",
4470                         "ActiveState",
4471                         &error,
4472                         &reply,
4473                         "s");
4474         if (r < 0) {
4475                 /* systemd might have dropped off momentarily, let's
4476                  * not make this an error */
4477                 if (sd_bus_error_has_names(&error, SD_BUS_ERROR_NO_REPLY,
4478                                                    SD_BUS_ERROR_DISCONNECTED))
4479                         return true;
4480
4481                 /* If the unit is already unloaded then it's not
4482                  * active */
4483                 if (sd_bus_error_has_names(&error, BUS_ERROR_NO_SUCH_UNIT,
4484                                                    BUS_ERROR_LOAD_FAILED))
4485                         return false;
4486
4487                 sd_bus_error_move(ret_error, &error);
4488                 return r;
4489         }
4490
4491         r = sd_bus_message_read(reply, "s", &state);
4492         if (r < 0)
4493                 return r;
4494
4495         return !STR_IN_SET(state, "inactive", "failed");
4496 }
4497
4498 int manager_job_is_active(Manager *manager, const char *path, sd_bus_error *ret_error) {
4499         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4500         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4501         int r;
4502
4503         assert(manager);
4504         assert(path);
4505
4506         r = sd_bus_get_property(
4507                         manager->bus,
4508                         "org.freedesktop.systemd1",
4509                         path,
4510                         "org.freedesktop.systemd1.Job",
4511                         "State",
4512                         &error,
4513                         &reply,
4514                         "s");
4515         if (r < 0) {
4516                 if (sd_bus_error_has_names(&error, SD_BUS_ERROR_NO_REPLY,
4517                                                    SD_BUS_ERROR_DISCONNECTED))
4518                         return true;
4519
4520                 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_OBJECT))
4521                         return false;
4522
4523                 sd_bus_error_move(ret_error, &error);
4524                 return r;
4525         }
4526
4527         /* We don't actually care about the state really. The fact
4528          * that we could read the job state is enough for us */
4529
4530         return true;
4531 }