src/login/logind-dbus.c

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2
   3 #include <errno.h>
   4 #include <sys/stat.h>
   5 #include <unistd.h>
   6
   7 #include "sd-device.h"
   8 #include "sd-messages.h"
   9
  10 #include "alloc-util.h"
  11 #include "audit-util.h"
  12 #include "bootspec.h"
  13 #include "bus-common-errors.h"
  14 #include "bus-error.h"
  15 #include "bus-get-properties.h"
  16 #include "bus-locator.h"
  17 #include "bus-polkit.h"
  18 #include "bus-unit-util.h"
  19 #include "bus-util.h"
  20 #include "cgroup-util.h"
  21 #include "device-util.h"
  22 #include "dirent-util.h"
  23 #include "efi-api.h"
  24 #include "efi-loader.h"
  25 #include "efivars.h"
  26 #include "env-file.h"
  27 #include "env-util.h"
  28 #include "escape.h"
  29 #include "event-util.h"
  30 #include "fd-util.h"
  31 #include "fileio-label.h"
  32 #include "fileio.h"
  33 #include "format-util.h"
  34 #include "fs-util.h"
  35 #include "logind-action.h"
  36 #include "logind-dbus.h"
  37 #include "logind-polkit.h"
  38 #include "logind-seat-dbus.h"
  39 #include "logind-session-dbus.h"
  40 #include "logind-user-dbus.h"
  41 #include "logind.h"
  42 #include "missing_capability.h"
  43 #include "mkdir-label.h"
  44 #include "parse-util.h"
  45 #include "path-util.h"
  46 #include "process-util.h"
  47 #include "reboot-util.h"
  48 #include "selinux-util.h"
  49 #include "sleep-config.h"
  50 #include "special.h"
  51 #include "serialize.h"
  52 #include "stdio-util.h"
  53 #include "strv.h"
  54 #include "terminal-util.h"
  55 #include "tmpfile-util.h"
  56 #include "unit-name.h"
  57 #include "user-util.h"
  58 #include "utmp-wtmp.h"
  59 #include "virt.h"
  60 #include "wall.h"
  61
  62 /* As a random fun fact sysvinit had a 252 (256-(strlen(" \r\n")+1))
  63  * character limit for the wall message.
  64  * https://git.savannah.nongnu.org/cgit/sysvinit.git/tree/src/shutdown.c#n72
  65  * There is no real technical need for that but doesn't make sense
  66  * to store arbitrary amounts either. As we are not stingy here, we
  67  * allow 4k.
  68  */
  69 #define WALL_MESSAGE_MAX 4096U
  70
  71 #define SHUTDOWN_SCHEDULE_FILE "/run/systemd/shutdown/scheduled"
  72
  73 static int update_schedule_file(Manager *m);
  74 static void reset_scheduled_shutdown(Manager *m);
  75 static int manager_setup_shutdown_timers(Manager* m);
  76
  77 static int get_sender_session(
  78                 Manager *m,
  79                 sd_bus_message *message,
  80                 bool consult_display,
  81                 sd_bus_error *error,
  82                 Session **ret) {
  83
  84         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
  85         Session *session = NULL;
  86         const char *name;
  87         int r;
  88
  89         /* Acquire the sender's session. This first checks if the sending process is inside a session itself,
  90          * and returns that. If not and 'consult_display' is true, this returns the display session of the
  91          * owning user of the caller. */
  92
  93         r = sd_bus_query_sender_creds(message,
  94                                       SD_BUS_CREDS_SESSION|SD_BUS_CREDS_AUGMENT|
  95                                       (consult_display ? SD_BUS_CREDS_OWNER_UID : 0), &creds);
  96         if (r < 0)
  97                 return r;
  98
  99         r = sd_bus_creds_get_session(creds, &name);
 100         if (r < 0) {
 101                 if (r != -ENXIO)
 102                         return r;
 103
 104                 if (consult_display) {
 105                         uid_t uid;
 106
 107                         r = sd_bus_creds_get_owner_uid(creds, &uid);
 108                         if (r < 0) {
 109                                 if (r != -ENXIO)
 110                                         return r;
 111                         } else {
 112                                 User *user;
 113
 114                                 user = hashmap_get(m->users, UID_TO_PTR(uid));
 115                                 if (user)
 116                                         session = user->display;
 117                         }
 118                 }
 119         } else
 120                 session = hashmap_get(m->sessions, name);
 121
 122         if (!session)
 123                 return sd_bus_error_setf(error, BUS_ERROR_NO_SESSION_FOR_PID,
 124                                          consult_display ?
 125                                          "Caller does not belong to any known session and doesn't own any suitable session." :
 126                                          "Caller does not belong to any known session.");
 127
 128         *ret = session;
 129         return 0;
 130 }
 131
 132 int manager_get_session_from_creds(
 133                 Manager *m,
 134                 sd_bus_message *message,
 135                 const char *name,
 136                 sd_bus_error *error,
 137                 Session **ret) {
 138
 139         Session *session;
 140
 141         assert(m);
 142         assert(ret);
 143
 144         if (SEAT_IS_SELF(name)) /* the caller's own session */
 145                 return get_sender_session(m, message, false, error, ret);
 146         if (SEAT_IS_AUTO(name)) /* The caller's own session if they have one, otherwise their user's display session */
 147                 return get_sender_session(m, message, true, error, ret);
 148
 149         session = hashmap_get(m->sessions, name);
 150         if (!session)
 151                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SESSION, "No session '%s' known", name);
 152
 153         *ret = session;
 154         return 0;
 155 }
 156
 157 static int get_sender_user(Manager *m, sd_bus_message *message, sd_bus_error *error, User **ret) {
 158         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 159         uid_t uid;
 160         User *user;
 161         int r;
 162
 163         /* Note that we get the owner UID of the session, not the actual client UID here! */
 164         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds);
 165         if (r < 0)
 166                 return r;
 167
 168         r = sd_bus_creds_get_owner_uid(creds, &uid);
 169         if (r < 0) {
 170                 if (r != -ENXIO)
 171                         return r;
 172
 173                 user = NULL;
 174         } else
 175                 user = hashmap_get(m->users, UID_TO_PTR(uid));
 176
 177         if (!user)
 178                 return sd_bus_error_setf(error, BUS_ERROR_NO_USER_FOR_PID,
 179                                          "Caller does not belong to any logged in or lingering user");
 180
 181         *ret = user;
 182         return 0;
 183 }
 184
 185 int manager_get_user_from_creds(Manager *m, sd_bus_message *message, uid_t uid, sd_bus_error *error, User **ret) {
 186         User *user;
 187
 188         assert(m);
 189         assert(ret);
 190
 191         if (!uid_is_valid(uid))
 192                 return get_sender_user(m, message, error, ret);
 193
 194         user = hashmap_get(m->users, UID_TO_PTR(uid));
 195         if (!user)
 196                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_USER,
 197                                          "User ID "UID_FMT" is not logged in or lingering", uid);
 198
 199         *ret = user;
 200         return 0;
 201 }
 202
 203 int manager_get_seat_from_creds(
 204                 Manager *m,
 205                 sd_bus_message *message,
 206                 const char *name,
 207                 sd_bus_error *error,
 208                 Seat **ret) {
 209
 210         Seat *seat;
 211         int r;
 212
 213         assert(m);
 214         assert(ret);
 215
 216         if (SEAT_IS_SELF(name) || SEAT_IS_AUTO(name)) {
 217                 Session *session;
 218
 219                 /* Use these special seat names as session names */
 220                 r = manager_get_session_from_creds(m, message, name, error, &session);
 221                 if (r < 0)
 222                         return r;
 223
 224                 seat = session->seat;
 225                 if (!seat)
 226                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "Session '%s' has no seat.", session->id);
 227         } else {
 228                 seat = hashmap_get(m->seats, name);
 229                 if (!seat)
 230                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "No seat '%s' known", name);
 231         }
 232
 233         *ret = seat;
 234         return 0;
 235 }
 236
 237 static int return_test_polkit(
 238                 sd_bus_message *message,
 239                 const char *action,
 240                 const char **details,
 241                 uid_t good_user,
 242                 sd_bus_error *e) {
 243
 244         const char *result;
 245         bool challenge;
 246         int r;
 247
 248         r = bus_test_polkit(message, action, details, good_user, &challenge, e);
 249         if (r < 0)
 250                 return r;
 251
 252         if (r > 0)
 253                 result = "yes";
 254         else if (challenge)
 255                 result = "challenge";
 256         else
 257                 result = "no";
 258
 259         return sd_bus_reply_method_return(message, "s", result);
 260 }
 261
 262 static int property_get_idle_hint(
 263                 sd_bus *bus,
 264                 const char *path,
 265                 const char *interface,
 266                 const char *property,
 267                 sd_bus_message *reply,
 268                 void *userdata,
 269                 sd_bus_error *error) {
 270
 271         Manager *m = ASSERT_PTR(userdata);
 272
 273         assert(bus);
 274         assert(reply);
 275
 276         return sd_bus_message_append(reply, "b", manager_get_idle_hint(m, NULL) > 0);
 277 }
 278
 279 static int property_get_idle_since_hint(
 280                 sd_bus *bus,
 281                 const char *path,
 282                 const char *interface,
 283                 const char *property,
 284                 sd_bus_message *reply,
 285                 void *userdata,
 286                 sd_bus_error *error) {
 287
 288         Manager *m = ASSERT_PTR(userdata);
 289         dual_timestamp t = DUAL_TIMESTAMP_NULL;
 290
 291         assert(bus);
 292         assert(reply);
 293
 294         manager_get_idle_hint(m, &t);
 295
 296         return sd_bus_message_append(reply, "t", streq(property, "IdleSinceHint") ? t.realtime : t.monotonic);
 297 }
 298
 299 static int property_get_inhibited(
 300                 sd_bus *bus,
 301                 const char *path,
 302                 const char *interface,
 303                 const char *property,
 304                 sd_bus_message *reply,
 305                 void *userdata,
 306                 sd_bus_error *error) {
 307
 308         Manager *m = ASSERT_PTR(userdata);
 309         InhibitWhat w;
 310
 311         assert(bus);
 312         assert(reply);
 313
 314         w = manager_inhibit_what(m, streq(property, "BlockInhibited") ? INHIBIT_BLOCK : INHIBIT_DELAY);
 315
 316         return sd_bus_message_append(reply, "s", inhibit_what_to_string(w));
 317 }
 318
 319 static int property_get_preparing(
 320                 sd_bus *bus,
 321                 const char *path,
 322                 const char *interface,
 323                 const char *property,
 324                 sd_bus_message *reply,
 325                 void *userdata,
 326                 sd_bus_error *error) {
 327
 328         Manager *m = ASSERT_PTR(userdata);
 329         bool b = false;
 330
 331         assert(bus);
 332         assert(reply);
 333
 334         if (m->delayed_action) {
 335                 if (streq(property, "PreparingForShutdown"))
 336                         b = m->delayed_action->inhibit_what & INHIBIT_SHUTDOWN;
 337                 else
 338                         b = m->delayed_action->inhibit_what & INHIBIT_SLEEP;
 339         }
 340
 341         return sd_bus_message_append(reply, "b", b);
 342 }
 343
 344 static int property_get_sleep_operations(
 345                 sd_bus *bus,
 346                 const char *path,
 347                 const char *interface,
 348                 const char *property,
 349                 sd_bus_message *reply,
 350                 void *userdata,
 351                 sd_bus_error *error) {
 352
 353         Manager *m = ASSERT_PTR(userdata);
 354         _cleanup_strv_free_ char **actions = NULL;
 355         int r;
 356
 357         assert(bus);
 358         assert(reply);
 359
 360         r = handle_action_get_enabled_sleep_actions(m->handle_action_sleep_mask, &actions);
 361         if (r < 0)
 362                 return r;
 363
 364         return sd_bus_message_append_strv(reply, actions);
 365 }
 366
 367 static int property_get_scheduled_shutdown(
 368                 sd_bus *bus,
 369                 const char *path,
 370                 const char *interface,
 371                 const char *property,
 372                 sd_bus_message *reply,
 373                 void *userdata,
 374                 sd_bus_error *error) {
 375
 376         Manager *m = ASSERT_PTR(userdata);
 377         int r;
 378
 379         assert(bus);
 380         assert(reply);
 381
 382         r = sd_bus_message_open_container(reply, 'r', "st");
 383         if (r < 0)
 384                 return r;
 385
 386         r = sd_bus_message_append(
 387                         reply, "st",
 388                         handle_action_to_string(m->scheduled_shutdown_action),
 389                         m->scheduled_shutdown_timeout);
 390         if (r < 0)
 391                 return r;
 392
 393         return sd_bus_message_close_container(reply);
 394 }
 395
 396 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_handle_action, handle_action, HandleAction);
 397 static BUS_DEFINE_PROPERTY_GET(property_get_docked, "b", Manager, manager_is_docked_or_external_displays);
 398 static BUS_DEFINE_PROPERTY_GET(property_get_lid_closed, "b", Manager, manager_is_lid_closed);
 399 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_on_external_power, "b", manager_is_on_external_power());
 400 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_compat_user_tasks_max, "t", CGROUP_LIMIT_MAX);
 401 static BUS_DEFINE_PROPERTY_GET_REF(property_get_hashmap_size, "t", Hashmap *, (uint64_t) hashmap_size);
 402
 403 static int method_get_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 404         _cleanup_free_ char *p = NULL;
 405         Manager *m = ASSERT_PTR(userdata);
 406         const char *name;
 407         Session *session;
 408         int r;
 409
 410         assert(message);
 411
 412         r = sd_bus_message_read(message, "s", &name);
 413         if (r < 0)
 414                 return r;
 415
 416         r = manager_get_session_from_creds(m, message, name, error, &session);
 417         if (r < 0)
 418                 return r;
 419
 420         p = session_bus_path(session);
 421         if (!p)
 422                 return -ENOMEM;
 423
 424         return sd_bus_reply_method_return(message, "o", p);
 425 }
 426
 427 /* Get login session of a process.  This is not what you are looking for these days,
 428  * as apps may instead belong to a user service unit.  This includes terminal
 429  * emulators and hence command-line apps. */
 430 static int method_get_session_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 431         Manager *m = ASSERT_PTR(userdata);
 432         _cleanup_free_ char *p = NULL;
 433         Session *session = NULL;
 434         pid_t pid;
 435         int r;
 436
 437         assert(message);
 438
 439         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 440
 441         r = sd_bus_message_read(message, "u", &pid);
 442         if (r < 0)
 443                 return r;
 444         if (pid < 0)
 445                 return -EINVAL;
 446
 447         if (pid == 0) {
 448                 r = manager_get_session_from_creds(m, message, NULL, error, &session);
 449                 if (r < 0)
 450                         return r;
 451         } else {
 452                 r = manager_get_session_by_pidref(m, &PIDREF_MAKE_FROM_PID(pid), &session);
 453                 if (r < 0)
 454                         return r;
 455
 456                 if (!session)
 457                         return sd_bus_error_setf(error, BUS_ERROR_NO_SESSION_FOR_PID,
 458                                                  "PID "PID_FMT" does not belong to any known session", pid);
 459         }
 460
 461         p = session_bus_path(session);
 462         if (!p)
 463                 return -ENOMEM;
 464
 465         return sd_bus_reply_method_return(message, "o", p);
 466 }
 467
 468 static int method_get_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 469         _cleanup_free_ char *p = NULL;
 470         Manager *m = ASSERT_PTR(userdata);
 471         uint32_t uid;
 472         User *user;
 473         int r;
 474
 475         assert(message);
 476
 477         r = sd_bus_message_read(message, "u", &uid);
 478         if (r < 0)
 479                 return r;
 480
 481         r = manager_get_user_from_creds(m, message, uid, error, &user);
 482         if (r < 0)
 483                 return r;
 484
 485         p = user_bus_path(user);
 486         if (!p)
 487                 return -ENOMEM;
 488
 489         return sd_bus_reply_method_return(message, "o", p);
 490 }
 491
 492 static int method_get_user_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 493         _cleanup_free_ char *p = NULL;
 494         Manager *m = ASSERT_PTR(userdata);
 495         User *user = NULL;
 496         pid_t pid;
 497         int r;
 498
 499         assert(message);
 500
 501         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 502
 503         r = sd_bus_message_read(message, "u", &pid);
 504         if (r < 0)
 505                 return r;
 506         if (pid < 0)
 507                 return -EINVAL;
 508
 509         if (pid == 0) {
 510                 r = manager_get_user_from_creds(m, message, UID_INVALID, error, &user);
 511                 if (r < 0)
 512                         return r;
 513         } else {
 514                 r = manager_get_user_by_pid(m, pid, &user);
 515                 if (r < 0)
 516                         return r;
 517                 if (!user)
 518                         return sd_bus_error_setf(error, BUS_ERROR_NO_USER_FOR_PID,
 519                                                  "PID "PID_FMT" does not belong to any logged in user or lingering user",
 520                                                  pid);
 521         }
 522
 523         p = user_bus_path(user);
 524         if (!p)
 525                 return -ENOMEM;
 526
 527         return sd_bus_reply_method_return(message, "o", p);
 528 }
 529
 530 static int method_get_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 531         _cleanup_free_ char *p = NULL;
 532         Manager *m = ASSERT_PTR(userdata);
 533         const char *name;
 534         Seat *seat;
 535         int r;
 536
 537         assert(message);
 538
 539         r = sd_bus_message_read(message, "s", &name);
 540         if (r < 0)
 541                 return r;
 542
 543         r = manager_get_seat_from_creds(m, message, name, error, &seat);
 544         if (r < 0)
 545                 return r;
 546
 547         p = seat_bus_path(seat);
 548         if (!p)
 549                 return -ENOMEM;
 550
 551         return sd_bus_reply_method_return(message, "o", p);
 552 }
 553
 554 static int method_list_sessions(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 555         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 556         Manager *m = ASSERT_PTR(userdata);
 557         Session *session;
 558         int r;
 559
 560         assert(message);
 561
 562         r = sd_bus_message_new_method_return(message, &reply);
 563         if (r < 0)
 564                 return r;
 565
 566         r = sd_bus_message_open_container(reply, 'a', "(susso)");
 567         if (r < 0)
 568                 return r;
 569
 570         HASHMAP_FOREACH(session, m->sessions) {
 571                 _cleanup_free_ char *p = NULL;
 572
 573                 p = session_bus_path(session);
 574                 if (!p)
 575                         return -ENOMEM;
 576
 577                 r = sd_bus_message_append(reply, "(susso)",
 578                                           session->id,
 579                                           (uint32_t) session->user->user_record->uid,
 580                                           session->user->user_record->user_name,
 581                                           session->seat ? session->seat->id : "",
 582                                           p);
 583                 if (r < 0)
 584                         return r;
 585         }
 586
 587         r = sd_bus_message_close_container(reply);
 588         if (r < 0)
 589                 return r;
 590
 591         return sd_bus_send(NULL, reply, NULL);
 592 }
 593
 594 static int method_list_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_ char *cc = NULL;
1423         Manager *m = ASSERT_PTR(userdata);
1424         int r, b, interactive;
1425         struct passwd *pw;
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         errno = 0;
1454         pw = getpwuid(uid);
1455         if (!pw)
1456                 return errno_or_else(ENOENT);
1457
1458         r = bus_verify_polkit_async_full(
1459                         message,
1460                         uid == auth_uid ? "org.freedesktop.login1.set-self-linger" :
1461                                           "org.freedesktop.login1.set-user-linger",
1462                         /* details= */ NULL,
1463                         interactive,
1464                         /* good_user= */ UID_INVALID,
1465                         &m->polkit_registry,
1466                         error);
1467         if (r < 0)
1468                 return r;
1469         if (r == 0)
1470                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1471
1472         (void) mkdir_p_label("/var/lib/systemd", 0755);
1473         r = mkdir_safe_label("/var/lib/systemd/linger", 0755, 0, 0, MKDIR_WARN_MODE);
1474         if (r < 0)
1475                 return r;
1476
1477         cc = cescape(pw->pw_name);
1478         if (!cc)
1479                 return -ENOMEM;
1480
1481         path = strjoina("/var/lib/systemd/linger/", cc);
1482         if (b) {
1483                 User *u;
1484
1485                 r = touch(path);
1486                 if (r < 0)
1487                         return r;
1488
1489                 if (manager_add_user_by_uid(m, uid, &u) >= 0)
1490                         user_start(u);
1491
1492         } else {
1493                 User *u;
1494
1495                 r = unlink(path);
1496                 if (r < 0 && errno != ENOENT)
1497                         return -errno;
1498
1499                 u = hashmap_get(m->users, UID_TO_PTR(uid));
1500                 if (u)
1501                         user_add_to_gc_queue(u);
1502         }
1503
1504         return sd_bus_reply_method_return(message, NULL);
1505 }
1506
1507 static int trigger_device(Manager *m, sd_device *parent) {
1508         _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL;
1509         int r;
1510
1511         assert(m);
1512
1513         r = sd_device_enumerator_new(&e);
1514         if (r < 0)
1515                 return r;
1516
1517         r = sd_device_enumerator_allow_uninitialized(e);
1518         if (r < 0)
1519                 return r;
1520
1521         if (parent) {
1522                 r = sd_device_enumerator_add_match_parent(e, parent);
1523                 if (r < 0)
1524                         return r;
1525         }
1526
1527         FOREACH_DEVICE(e, d) {
1528                 r = sd_device_trigger(d, SD_DEVICE_CHANGE);
1529                 if (r < 0)
1530                         log_device_debug_errno(d, r, "Failed to trigger device, ignoring: %m");
1531         }
1532
1533         return 0;
1534 }
1535
1536 static int attach_device(Manager *m, const char *seat, const char *sysfs, sd_bus_error *error) {
1537         _cleanup_(sd_device_unrefp) sd_device *d = NULL;
1538         _cleanup_free_ char *rule = NULL, *file = NULL;
1539         const char *id_for_seat;
1540         int r;
1541
1542         assert(m);
1543         assert(seat);
1544         assert(sysfs);
1545
1546         r = sd_device_new_from_syspath(&d, sysfs);
1547         if (r < 0)
1548                 return sd_bus_error_set_errnof(error, r, "Failed to open device '%s': %m", sysfs);
1549
1550         if (sd_device_has_current_tag(d, "seat") <= 0)
1551                 return sd_bus_error_set_errnof(error, ENODEV, "Device '%s' lacks 'seat' udev tag.", sysfs);
1552
1553         if (sd_device_get_property_value(d, "ID_FOR_SEAT", &id_for_seat) < 0)
1554                 return sd_bus_error_set_errnof(error, ENODEV, "Device '%s' lacks 'ID_FOR_SEAT' udev property.", sysfs);
1555
1556         if (asprintf(&file, "/etc/udev/rules.d/72-seat-%s.rules", id_for_seat) < 0)
1557                 return -ENOMEM;
1558
1559         if (asprintf(&rule, "TAG==\"seat\", ENV{ID_FOR_SEAT}==\"%s\", ENV{ID_SEAT}=\"%s\"", id_for_seat, seat) < 0)
1560                 return -ENOMEM;
1561
1562         (void) mkdir_p_label("/etc/udev/rules.d", 0755);
1563         r = write_string_file_atomic_label(file, rule);
1564         if (r < 0)
1565                 return r;
1566
1567         return trigger_device(m, d);
1568 }
1569
1570 static int flush_devices(Manager *m) {
1571         _cleanup_closedir_ DIR *d = NULL;
1572
1573         assert(m);
1574
1575         d = opendir("/etc/udev/rules.d");
1576         if (!d) {
1577                 if (errno != ENOENT)
1578                         log_warning_errno(errno, "Failed to open /etc/udev/rules.d: %m");
1579         } else
1580                 FOREACH_DIRENT_ALL(de, d, break) {
1581                         if (!dirent_is_file(de))
1582                                 continue;
1583
1584                         if (!startswith(de->d_name, "72-seat-"))
1585                                 continue;
1586
1587                         if (!endswith(de->d_name, ".rules"))
1588                                 continue;
1589
1590                         if (unlinkat(dirfd(d), de->d_name, 0) < 0)
1591                                 log_warning_errno(errno, "Failed to unlink %s: %m", de->d_name);
1592                 }
1593
1594         return trigger_device(m, NULL);
1595 }
1596
1597 static int method_attach_device(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1598         const char *sysfs, *seat;
1599         Manager *m = ASSERT_PTR(userdata);
1600         int interactive, r;
1601
1602         assert(message);
1603
1604         r = sd_bus_message_read(message, "ssb", &seat, &sysfs, &interactive);
1605         if (r < 0)
1606                 return r;
1607
1608         if (!path_is_normalized(sysfs))
1609                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not normalized", sysfs);
1610         if (!path_startswith(sysfs, "/sys"))
1611                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not in /sys", sysfs);
1612
1613         if (SEAT_IS_SELF(seat) || SEAT_IS_AUTO(seat)) {
1614                 Seat *found;
1615
1616                 r = manager_get_seat_from_creds(m, message, seat, error, &found);
1617                 if (r < 0)
1618                         return r;
1619
1620                 seat = found->id;
1621
1622         } else if (!seat_name_is_valid(seat)) /* Note that a seat does not have to exist yet for this operation to succeed */
1623                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Seat name %s is not valid", seat);
1624
1625         r = bus_verify_polkit_async_full(
1626                         message,
1627                         "org.freedesktop.login1.attach-device",
1628                         /* details= */ NULL,
1629                         interactive,
1630                         /* good_user= */ UID_INVALID,
1631                         &m->polkit_registry,
1632                         error);
1633         if (r < 0)
1634                 return r;
1635         if (r == 0)
1636                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1637
1638         r = attach_device(m, seat, sysfs, error);
1639         if (r < 0)
1640                 return r;
1641
1642         return sd_bus_reply_method_return(message, NULL);
1643 }
1644
1645 static int method_flush_devices(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1646         Manager *m = ASSERT_PTR(userdata);
1647         int interactive, r;
1648
1649         assert(message);
1650
1651         r = sd_bus_message_read(message, "b", &interactive);
1652         if (r < 0)
1653                 return r;
1654
1655         r = bus_verify_polkit_async_full(
1656                         message,
1657                         "org.freedesktop.login1.flush-devices",
1658                         /* details= */ NULL,
1659                         interactive,
1660                         /* good_user= */ UID_INVALID,
1661                         &m->polkit_registry,
1662                         error);
1663         if (r < 0)
1664                 return r;
1665         if (r == 0)
1666                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1667
1668         r = flush_devices(m);
1669         if (r < 0)
1670                 return r;
1671
1672         return sd_bus_reply_method_return(message, NULL);
1673 }
1674
1675 static int have_multiple_sessions(
1676                 Manager *m,
1677                 uid_t uid) {
1678
1679         Session *session;
1680
1681         assert(m);
1682
1683         /* Check for other users' sessions. Greeter sessions do not
1684          * count, and non-login sessions do not count either. */
1685         HASHMAP_FOREACH(session, m->sessions)
1686                 if (session->class == SESSION_USER &&
1687                     session->user->user_record->uid != uid)
1688                         return true;
1689
1690         return false;
1691 }
1692
1693 static int bus_manager_log_shutdown(
1694                 Manager *m,
1695                 const HandleActionData *a) {
1696         assert(m);
1697         assert(a);
1698
1699         const char *message = a->message ?: "System is shutting down";
1700         const char *log_verb = a->log_verb ? strjoina("SHUTDOWN=", a->log_verb) : NULL;
1701
1702         return log_struct(LOG_NOTICE,
1703                           "MESSAGE_ID=%s", a->message_id ?: SD_MESSAGE_SHUTDOWN_STR,
1704                           LOG_MESSAGE("%s%s%s%s.",
1705                                       message,
1706                                       m->wall_message ? " (" : "",
1707                                       strempty(m->wall_message),
1708                                       m->wall_message ? ")" : ""),
1709                           log_verb);
1710 }
1711
1712 static int lid_switch_ignore_handler(sd_event_source *e, uint64_t usec, void *userdata) {
1713         Manager *m = ASSERT_PTR(userdata);
1714
1715         assert(e);
1716
1717         m->lid_switch_ignore_event_source = sd_event_source_unref(m->lid_switch_ignore_event_source);
1718         return 0;
1719 }
1720
1721 int manager_set_lid_switch_ignore(Manager *m, usec_t until) {
1722         int r;
1723
1724         assert(m);
1725
1726         if (until <= now(CLOCK_MONOTONIC))
1727                 return 0;
1728
1729         /* We want to ignore the lid switch for a while after each
1730          * suspend, and after boot-up. Hence let's install a timer for
1731          * this. As long as the event source exists we ignore the lid
1732          * switch. */
1733
1734         if (m->lid_switch_ignore_event_source) {
1735                 usec_t u;
1736
1737                 r = sd_event_source_get_time(m->lid_switch_ignore_event_source, &u);
1738                 if (r < 0)
1739                         return r;
1740
1741                 if (until <= u)
1742                         return 0;
1743
1744                 r = sd_event_source_set_time(m->lid_switch_ignore_event_source, until);
1745         } else
1746                 r = sd_event_add_time(
1747                                 m->event,
1748                                 &m->lid_switch_ignore_event_source,
1749                                 CLOCK_MONOTONIC,
1750                                 until, 0,
1751                                 lid_switch_ignore_handler, m);
1752
1753         return r;
1754 }
1755
1756 static int send_prepare_for(Manager *m, const HandleActionData *a, bool _active) {
1757         int k = 0, r, active = _active;
1758
1759         assert(m);
1760         assert(a);
1761         assert(IN_SET(a->inhibit_what, INHIBIT_SHUTDOWN, INHIBIT_SLEEP));
1762
1763         /* We need to send both old and new signal for backward compatibility. The newer one allows clients
1764          * to know which type of reboot is going to happen, as they might be doing different actions (e.g.:
1765          * on soft-reboot), and it is sent first, so that clients know that if they receive the old one
1766          * first then they don't have to wait for the new one, as it means it's not supported. So, do not
1767          * change the order here, as it is an API. */
1768         if (a->inhibit_what == INHIBIT_SHUTDOWN) {
1769                 k = sd_bus_emit_signal(m->bus,
1770                                        "/org/freedesktop/login1",
1771                                        "org.freedesktop.login1.Manager",
1772                                        "PrepareForShutdownWithMetadata",
1773                                        "ba{sv}",
1774                                        active,
1775                                        1,
1776                                        "type",
1777                                        "s",
1778                                        handle_action_to_string(a->handle));
1779                 if (k < 0)
1780                         log_debug_errno(k, "Failed to emit PrepareForShutdownWithMetadata(): %m");
1781         }
1782
1783         r = sd_bus_emit_signal(m->bus,
1784                                "/org/freedesktop/login1",
1785                                "org.freedesktop.login1.Manager",
1786                                a->inhibit_what == INHIBIT_SHUTDOWN ? "PrepareForShutdown" : "PrepareForSleep",
1787                                "b",
1788                                active);
1789         if (r < 0)
1790                 log_debug_errno(r, "Failed to emit PrepareForShutdown(): %m");
1791
1792         return RET_GATHER(k, r);
1793 }
1794
1795 static int execute_shutdown_or_sleep(
1796                 Manager *m,
1797                 const HandleActionData *a,
1798                 sd_bus_error *error) {
1799
1800         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1801         const char *p;
1802         int r;
1803
1804         assert(m);
1805         assert(!m->action_job);
1806         assert(a);
1807
1808         if (a->inhibit_what == INHIBIT_SHUTDOWN)
1809                 bus_manager_log_shutdown(m, a);
1810
1811         r = bus_call_method(
1812                         m->bus,
1813                         bus_systemd_mgr,
1814                         "StartUnit",
1815                         error,
1816                         &reply,
1817                         "ss", a->target, "replace-irreversibly");
1818         if (r < 0)
1819                 goto error;
1820
1821         r = sd_bus_message_read(reply, "o", &p);
1822         if (r < 0)
1823                 goto error;
1824
1825         m->action_job = strdup(p);
1826         if (!m->action_job) {
1827                 r = -ENOMEM;
1828                 goto error;
1829         }
1830
1831         m->delayed_action = a;
1832
1833         /* Make sure the lid switch is ignored for a while */
1834         manager_set_lid_switch_ignore(m, usec_add(now(CLOCK_MONOTONIC), m->holdoff_timeout_usec));
1835
1836         return 0;
1837
1838 error:
1839         /* Tell people that they now may take a lock again */
1840         (void) send_prepare_for(m, a, false);
1841
1842         return r;
1843 }
1844
1845 int manager_dispatch_delayed(Manager *manager, bool timeout) {
1846         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1847         Inhibitor *offending = NULL;
1848         int r;
1849
1850         assert(manager);
1851
1852         if (!manager->delayed_action || manager->action_job)
1853                 return 0;
1854
1855         if (manager_is_inhibited(manager, manager->delayed_action->inhibit_what, INHIBIT_DELAY, NULL, false, false, 0, &offending)) {
1856                 _cleanup_free_ char *comm = NULL, *u = NULL;
1857
1858                 if (!timeout)
1859                         return 0;
1860
1861                 (void) pidref_get_comm(&offending->pid, &comm);
1862                 u = uid_to_name(offending->uid);
1863
1864                 log_notice("Delay lock is active (UID "UID_FMT"/%s, PID "PID_FMT"/%s) but inhibitor timeout is reached.",
1865                            offending->uid, strna(u),
1866                            offending->pid.pid, strna(comm));
1867         }
1868
1869         /* Actually do the operation */
1870         r = execute_shutdown_or_sleep(manager, manager->delayed_action, &error);
1871         if (r < 0) {
1872                 log_warning("Error during inhibitor-delayed operation (already returned success to client): %s",
1873                             bus_error_message(&error, r));
1874
1875                 manager->delayed_action = NULL;
1876         }
1877
1878         return 1; /* We did some work. */
1879 }
1880
1881 static int manager_inhibit_timeout_handler(
1882                         sd_event_source *s,
1883                         uint64_t usec,
1884                         void *userdata) {
1885
1886         Manager *manager = ASSERT_PTR(userdata);
1887
1888         assert(manager->inhibit_timeout_source == s);
1889
1890         return manager_dispatch_delayed(manager, true);
1891 }
1892
1893 static int delay_shutdown_or_sleep(
1894                 Manager *m,
1895                 const HandleActionData *a) {
1896
1897         int r;
1898
1899         assert(m);
1900         assert(a);
1901
1902         if (m->inhibit_timeout_source) {
1903                 r = sd_event_source_set_time_relative(m->inhibit_timeout_source, m->inhibit_delay_max);
1904                 if (r < 0)
1905                         return log_error_errno(r, "sd_event_source_set_time_relative() failed: %m");
1906
1907                 r = sd_event_source_set_enabled(m->inhibit_timeout_source, SD_EVENT_ONESHOT);
1908                 if (r < 0)
1909                         return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
1910         } else {
1911                 r = sd_event_add_time_relative(
1912                                 m->event,
1913                                 &m->inhibit_timeout_source,
1914                                 CLOCK_MONOTONIC, m->inhibit_delay_max, 0,
1915                                 manager_inhibit_timeout_handler, m);
1916                 if (r < 0)
1917                         return r;
1918         }
1919
1920         m->delayed_action = a;
1921
1922         return 0;
1923 }
1924
1925 int bus_manager_shutdown_or_sleep_now_or_later(
1926                 Manager *m,
1927                 const HandleActionData *a,
1928                 sd_bus_error *error) {
1929
1930         _cleanup_free_ char *load_state = NULL;
1931         bool delayed;
1932         int r;
1933
1934         assert(m);
1935         assert(a);
1936         assert(!m->action_job);
1937
1938         r = unit_load_state(m->bus, a->target, &load_state);
1939         if (r < 0)
1940                 return r;
1941
1942         if (!streq(load_state, "loaded"))
1943                 return log_notice_errno(SYNTHETIC_ERRNO(EACCES),
1944                                         "Unit %s is %s, refusing operation.",
1945                                         a->target, load_state);
1946
1947         /* Tell everybody to prepare for shutdown/sleep */
1948         (void) send_prepare_for(m, a, true);
1949
1950         delayed =
1951                 m->inhibit_delay_max > 0 &&
1952                 manager_is_inhibited(m, a->inhibit_what, INHIBIT_DELAY, NULL, false, false, 0, NULL);
1953
1954         if (delayed)
1955                 /* Shutdown is delayed, keep in mind what we
1956                  * want to do, and start a timeout */
1957                 r = delay_shutdown_or_sleep(m, a);
1958         else
1959                 /* Shutdown is not delayed, execute it
1960                  * immediately */
1961                 r = execute_shutdown_or_sleep(m, a, error);
1962
1963         return r;
1964 }
1965
1966 static int verify_shutdown_creds(
1967                 Manager *m,
1968                 sd_bus_message *message,
1969                 const HandleActionData *a,
1970                 uint64_t flags,
1971                 sd_bus_error *error) {
1972
1973         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
1974         bool multiple_sessions, blocked, interactive;
1975         uid_t uid;
1976         int r;
1977
1978         assert(m);
1979         assert(a);
1980         assert(message);
1981
1982         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
1983         if (r < 0)
1984                 return r;
1985
1986         r = sd_bus_creds_get_euid(creds, &uid);
1987         if (r < 0)
1988                 return r;
1989
1990         r = have_multiple_sessions(m, uid);
1991         if (r < 0)
1992                 return r;
1993
1994         multiple_sessions = r > 0;
1995         blocked = manager_is_inhibited(m, a->inhibit_what, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
1996         interactive = flags & SD_LOGIND_INTERACTIVE;
1997
1998         if (multiple_sessions) {
1999                 r = bus_verify_polkit_async_full(
2000                                 message,
2001                                 a->polkit_action_multiple_sessions,
2002                                 /* details= */ NULL,
2003                                 interactive,
2004                                 /* good_user= */ UID_INVALID,
2005                                 &m->polkit_registry,
2006                                 error);
2007                 if (r < 0)
2008                         return r;
2009                 if (r == 0)
2010                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2011         }
2012
2013         if (blocked) {
2014                 /* We don't check polkit for root here, because you can't be more privileged than root */
2015                 if (uid == 0 && (flags & SD_LOGIND_ROOT_CHECK_INHIBITORS))
2016                         return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED,
2017                                                  "Access denied to root due to active block inhibitor");
2018
2019                 r = bus_verify_polkit_async_full(
2020                                 message,
2021                                 a->polkit_action_ignore_inhibit,
2022                                 /* details= */ NULL,
2023                                 interactive,
2024                                 /* good_user= */ UID_INVALID,
2025                                 &m->polkit_registry,
2026                                 error);
2027                 if (r < 0)
2028                         return r;
2029                 if (r == 0)
2030                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2031         }
2032
2033         if (!multiple_sessions && !blocked) {
2034                 r = bus_verify_polkit_async_full(
2035                                 message,
2036                                 a->polkit_action,
2037                                 /* details= */ NULL,
2038                                 interactive,
2039                                 /* good_user= */ UID_INVALID,
2040                                 &m->polkit_registry,
2041                                 error);
2042                 if (r < 0)
2043                         return r;
2044                 if (r == 0)
2045                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2046         }
2047
2048         return 0;
2049 }
2050
2051 static int setup_wall_message_timer(Manager *m, sd_bus_message* message) {
2052         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2053         int r;
2054
2055         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
2056         if (r >= 0) {
2057                 const char *tty = NULL;
2058
2059                 (void) sd_bus_creds_get_uid(creds, &m->scheduled_shutdown_uid);
2060                 (void) sd_bus_creds_get_tty(creds, &tty);
2061
2062                 r = free_and_strdup(&m->scheduled_shutdown_tty, tty);
2063                 if (r < 0)
2064                         return log_oom();
2065         }
2066
2067         r = manager_setup_wall_message_timer(m);
2068         if (r < 0)
2069                 return r;
2070
2071         return 0;
2072 }
2073
2074 static int method_do_shutdown_or_sleep(
2075                 Manager *m,
2076                 sd_bus_message *message,
2077                 HandleAction action,
2078                 bool with_flags,
2079                 sd_bus_error *error) {
2080
2081         uint64_t flags;
2082         int r;
2083
2084         assert(m);
2085         assert(message);
2086         assert(HANDLE_ACTION_IS_SHUTDOWN(action) || HANDLE_ACTION_IS_SLEEP(action));
2087
2088         if (with_flags) {
2089                 /* New style method: with flags parameter (and interactive bool in the bus message header) */
2090                 r = sd_bus_message_read(message, "t", &flags);
2091                 if (r < 0)
2092                         return r;
2093                 if ((flags & ~SD_LOGIND_SHUTDOWN_AND_SLEEP_FLAGS_PUBLIC) != 0)
2094                         return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS,
2095                                                 "Invalid flags parameter");
2096
2097                 if (FLAGS_SET(flags, (SD_LOGIND_REBOOT_VIA_KEXEC|SD_LOGIND_SOFT_REBOOT)))
2098                         return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS,
2099                                                 "Both reboot via kexec and soft reboot selected, which is not supported");
2100
2101                 if (action != HANDLE_REBOOT) {
2102                         if (flags & SD_LOGIND_REBOOT_VIA_KEXEC)
2103                                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS,
2104                                                         "Reboot via kexec option is only applicable with reboot operations");
2105                         if ((flags & SD_LOGIND_SOFT_REBOOT) || (flags & SD_LOGIND_SOFT_REBOOT_IF_NEXTROOT_SET_UP))
2106                                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS,
2107                                                         "Soft reboot option is only applicable with reboot operations");
2108                 }
2109         } else {
2110                 /* Old style method: no flags parameter, but interactive bool passed as boolean in
2111                  * payload. Let's convert this argument to the new-style flags parameter for our internal
2112                  * use. */
2113                 int interactive;
2114
2115                 r = sd_bus_message_read(message, "b", &interactive);
2116                 if (r < 0)
2117                         return r;
2118
2119                 flags = interactive ? SD_LOGIND_INTERACTIVE : 0;
2120         }
2121
2122         const HandleActionData *a = NULL;
2123
2124         if ((flags & SD_LOGIND_SOFT_REBOOT) ||
2125             ((flags & SD_LOGIND_SOFT_REBOOT_IF_NEXTROOT_SET_UP) && path_is_os_tree("/run/nextroot") > 0))
2126                 a = handle_action_lookup(HANDLE_SOFT_REBOOT);
2127         else if ((flags & SD_LOGIND_REBOOT_VIA_KEXEC) && kexec_loaded())
2128                 a = handle_action_lookup(HANDLE_KEXEC);
2129
2130         if (action == HANDLE_SLEEP) {
2131                 HandleAction selected;
2132
2133                 selected = handle_action_sleep_select(m);
2134                 if (selected < 0)
2135                         return sd_bus_error_set(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
2136                                                 "None of the configured sleep operations are supported");
2137
2138                 assert_se(a = handle_action_lookup(selected));
2139
2140         } else if (HANDLE_ACTION_IS_SLEEP(action)) {
2141                 SleepSupport support;
2142
2143                 assert_se(a = handle_action_lookup(action));
2144
2145                 assert(a->sleep_operation >= 0);
2146                 assert(a->sleep_operation < _SLEEP_OPERATION_MAX);
2147
2148                 r = sleep_supported_full(a->sleep_operation, &support);
2149                 if (r < 0)
2150                         return r;
2151                 if (r == 0)
2152                         switch (support) {
2153
2154                         case SLEEP_DISABLED:
2155                                 return sd_bus_error_setf(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
2156                                                          "Sleep verb '%s' is disabled by config",
2157                                                          sleep_operation_to_string(a->sleep_operation));
2158
2159                         case SLEEP_NOT_CONFIGURED:
2160                         case SLEEP_STATE_OR_MODE_NOT_SUPPORTED:
2161                         case SLEEP_ALARM_NOT_SUPPORTED:
2162                                 return sd_bus_error_setf(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
2163                                                          "Sleep verb '%s' is not configured or configuration is not supported by kernel",
2164                                                          sleep_operation_to_string(a->sleep_operation));
2165
2166                         case SLEEP_RESUME_NOT_SUPPORTED:
2167                                 return sd_bus_error_set(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
2168                                                         "Not running on EFI and resume= is not set. No available method to resume from hibernation");
2169
2170                         case SLEEP_NOT_ENOUGH_SWAP_SPACE:
2171                                 return sd_bus_error_set(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
2172                                                         "Not enough suitable swap space for hibernation available on compatible block devices and file systems");
2173
2174                         default:
2175                                 assert_not_reached();
2176
2177                         }
2178         } else if (!a)
2179                 assert_se(a = handle_action_lookup(action));
2180
2181         r = verify_shutdown_creds(m, message, a, flags, error);
2182         if (r != 0)
2183                 return r;
2184
2185         if (m->delayed_action)
2186                 return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS,
2187                                          "Action %s already in progress, refusing requested %s operation.",
2188                                          handle_action_to_string(m->delayed_action->handle),
2189                                          handle_action_to_string(a->handle));
2190
2191         /* reset case we're shorting a scheduled shutdown */
2192         m->unlink_nologin = false;
2193         reset_scheduled_shutdown(m);
2194
2195         m->scheduled_shutdown_timeout = 0;
2196         m->scheduled_shutdown_action = action;
2197
2198         (void) setup_wall_message_timer(m, message);
2199
2200         r = bus_manager_shutdown_or_sleep_now_or_later(m, a, error);
2201         if (r < 0)
2202                 return r;
2203
2204         return sd_bus_reply_method_return(message, NULL);
2205 }
2206
2207 static int method_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2208         Manager *m = userdata;
2209
2210         return method_do_shutdown_or_sleep(
2211                         m, message,
2212                         HANDLE_POWEROFF,
2213                         sd_bus_message_is_method_call(message, NULL, "PowerOffWithFlags"),
2214                         error);
2215 }
2216
2217 static int method_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2218         Manager *m = userdata;
2219
2220         return method_do_shutdown_or_sleep(
2221                         m, message,
2222                         HANDLE_REBOOT,
2223                         sd_bus_message_is_method_call(message, NULL, "RebootWithFlags"),
2224                         error);
2225 }
2226
2227 static int method_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2228         Manager *m = userdata;
2229
2230         return method_do_shutdown_or_sleep(
2231                         m, message,
2232                         HANDLE_HALT,
2233                         sd_bus_message_is_method_call(message, NULL, "HaltWithFlags"),
2234                         error);
2235 }
2236
2237 static int method_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2238         Manager *m = userdata;
2239
2240         return method_do_shutdown_or_sleep(
2241                         m, message,
2242                         HANDLE_SUSPEND,
2243                         sd_bus_message_is_method_call(message, NULL, "SuspendWithFlags"),
2244                         error);
2245 }
2246
2247 static int method_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2248         Manager *m = userdata;
2249
2250         return method_do_shutdown_or_sleep(
2251                         m, message,
2252                         HANDLE_HIBERNATE,
2253                         sd_bus_message_is_method_call(message, NULL, "HibernateWithFlags"),
2254                         error);
2255 }
2256
2257 static int method_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2258         Manager *m = userdata;
2259
2260         return method_do_shutdown_or_sleep(
2261                         m, message,
2262                         HANDLE_HYBRID_SLEEP,
2263                         sd_bus_message_is_method_call(message, NULL, "HybridSleepWithFlags"),
2264                         error);
2265 }
2266
2267 static int method_suspend_then_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2268         Manager *m = userdata;
2269
2270         return method_do_shutdown_or_sleep(
2271                         m, message,
2272                         HANDLE_SUSPEND_THEN_HIBERNATE,
2273                         sd_bus_message_is_method_call(message, NULL, "SuspendThenHibernateWithFlags"),
2274                         error);
2275 }
2276
2277 static int method_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2278         Manager *m = userdata;
2279
2280         return method_do_shutdown_or_sleep(
2281                         m, message,
2282                         HANDLE_SLEEP,
2283                         /* with_flags = */ true,
2284                         error);
2285 }
2286
2287 static int nologin_timeout_handler(
2288                         sd_event_source *s,
2289                         uint64_t usec,
2290                         void *userdata) {
2291
2292         Manager *m = userdata;
2293
2294         log_info("Creating /run/nologin, blocking further logins...");
2295
2296         m->unlink_nologin =
2297                 create_shutdown_run_nologin_or_warn() >= 0;
2298
2299         return 0;
2300 }
2301
2302 static usec_t nologin_timeout_usec(usec_t elapse) {
2303         /* Issue /run/nologin five minutes before shutdown */
2304         return LESS_BY(elapse, 5 * USEC_PER_MINUTE);
2305 }
2306
2307 void manager_load_scheduled_shutdown(Manager *m) {
2308         _cleanup_fclose_ FILE *f = NULL;
2309         _cleanup_free_ char *usec = NULL,
2310                *warn_wall = NULL,
2311                *mode = NULL,
2312                *wall_message = NULL,
2313                *uid = NULL,
2314                *tty = NULL;
2315         int r;
2316
2317         assert(m);
2318
2319         r = parse_env_file(f, SHUTDOWN_SCHEDULE_FILE,
2320                         "USEC", &usec,
2321                         "WARN_WALL", &warn_wall,
2322                         "MODE", &mode,
2323                         "WALL_MESSAGE", &wall_message,
2324                         "UID", &uid,
2325                         "TTY", &tty);
2326
2327         /* reset will delete the file */
2328         reset_scheduled_shutdown(m);
2329
2330         if (r == -ENOENT)
2331                 return;
2332         if (r < 0)
2333                 return (void) log_debug_errno(r, "Failed to parse " SHUTDOWN_SCHEDULE_FILE ": %m");
2334
2335         HandleAction handle = handle_action_from_string(mode);
2336         if (handle < 0)
2337                 return (void) log_debug_errno(SYNTHETIC_ERRNO(EINVAL), "Failed to parse scheduled shutdown type: %s", mode);
2338
2339         if (!usec)
2340                 return (void) log_debug_errno(SYNTHETIC_ERRNO(EINVAL), "USEC is required");
2341         if (deserialize_usec(usec, &m->scheduled_shutdown_timeout) < 0)
2342                 return;
2343
2344         /* assign parsed type only after we know usec is also valid */
2345         m->scheduled_shutdown_action = handle;
2346
2347         if (warn_wall) {
2348                 r = parse_boolean(warn_wall);
2349                 if (r < 0)
2350                         log_debug_errno(r, "Failed to parse enabling wall messages");
2351                 else
2352                         m->enable_wall_messages = r;
2353         }
2354
2355         if (wall_message) {
2356                 _cleanup_free_ char *unescaped = NULL;
2357                 r = cunescape(wall_message, 0, &unescaped);
2358                 if (r < 0)
2359                         log_debug_errno(r, "Failed to parse wall message: %s", wall_message);
2360                 else
2361                         free_and_replace(m->wall_message, unescaped);
2362         }
2363
2364         if (uid) {
2365                 r = parse_uid(uid, &m->scheduled_shutdown_uid);
2366                 if (r < 0)
2367                         log_debug_errno(r, "Failed to parse wall uid: %s", uid);
2368         }
2369
2370         free_and_replace(m->scheduled_shutdown_tty, tty);
2371
2372         r = manager_setup_shutdown_timers(m);
2373         if (r < 0)
2374                 return reset_scheduled_shutdown(m);
2375
2376         (void) manager_setup_wall_message_timer(m);
2377         (void) update_schedule_file(m);
2378
2379         return;
2380 }
2381
2382 static int update_schedule_file(Manager *m) {
2383         _cleanup_(unlink_and_freep) char *temp_path = NULL;
2384         _cleanup_fclose_ FILE *f = NULL;
2385         int r;
2386
2387         assert(m);
2388         assert(handle_action_valid(m->scheduled_shutdown_action));
2389
2390         r = mkdir_parents_label(SHUTDOWN_SCHEDULE_FILE, 0755);
2391         if (r < 0)
2392                 return log_error_errno(r, "Failed to create shutdown subdirectory: %m");
2393
2394         r = fopen_temporary(SHUTDOWN_SCHEDULE_FILE, &f, &temp_path);
2395         if (r < 0)
2396                 return log_error_errno(r, "Failed to save information about scheduled shutdowns: %m");
2397
2398         (void) fchmod(fileno(f), 0644);
2399
2400         serialize_usec(f, "USEC", m->scheduled_shutdown_timeout);
2401         serialize_item_format(f, "WARN_WALL", "%s", one_zero(m->enable_wall_messages));
2402         serialize_item_format(f, "MODE", "%s", handle_action_to_string(m->scheduled_shutdown_action));
2403         serialize_item_format(f, "UID", UID_FMT, m->scheduled_shutdown_uid);
2404
2405         if (m->scheduled_shutdown_tty)
2406                 serialize_item_format(f, "TTY", "%s", m->scheduled_shutdown_tty);
2407
2408         if (!isempty(m->wall_message)) {
2409                 r = serialize_item_escaped(f, "WALL_MESSAGE", m->wall_message);
2410                 if (r < 0)
2411                         goto fail;
2412         }
2413
2414         r = fflush_and_check(f);
2415         if (r < 0)
2416                 goto fail;
2417
2418         if (rename(temp_path, SHUTDOWN_SCHEDULE_FILE) < 0) {
2419                 r = -errno;
2420                 goto fail;
2421         }
2422
2423         temp_path = mfree(temp_path);
2424         return 0;
2425
2426 fail:
2427         (void) unlink(SHUTDOWN_SCHEDULE_FILE);
2428
2429         return log_error_errno(r, "Failed to write information about scheduled shutdowns: %m");
2430 }
2431
2432 static void reset_scheduled_shutdown(Manager *m) {
2433         assert(m);
2434
2435         m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2436         m->wall_message_timeout_source = sd_event_source_unref(m->wall_message_timeout_source);
2437         m->nologin_timeout_source = sd_event_source_unref(m->nologin_timeout_source);
2438
2439         m->scheduled_shutdown_action = _HANDLE_ACTION_INVALID;
2440         m->scheduled_shutdown_timeout = USEC_INFINITY;
2441         m->scheduled_shutdown_uid = UID_INVALID;
2442         m->scheduled_shutdown_tty = mfree(m->scheduled_shutdown_tty);
2443         m->shutdown_dry_run = false;
2444
2445         if (m->unlink_nologin) {
2446                 (void) unlink_or_warn("/run/nologin");
2447                 m->unlink_nologin = false;
2448         }
2449
2450         (void) unlink(SHUTDOWN_SCHEDULE_FILE);
2451 }
2452
2453 static int manager_scheduled_shutdown_handler(
2454                         sd_event_source *s,
2455                         uint64_t usec,
2456                         void *userdata) {
2457
2458         Manager *m = ASSERT_PTR(userdata);
2459         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
2460         const HandleActionData *a;
2461         int r;
2462
2463         assert_se(a = handle_action_lookup(m->scheduled_shutdown_action));
2464
2465         /* Don't allow multiple jobs being executed at the same time */
2466         if (m->delayed_action) {
2467                 r = log_error_errno(SYNTHETIC_ERRNO(EALREADY),
2468                                     "Scheduled shutdown to %s failed: shutdown or sleep operation already in progress.",
2469                                     a->target);
2470                 goto error;
2471         }
2472
2473         if (m->shutdown_dry_run) {
2474                 /* We do not process delay inhibitors here.  Otherwise, we
2475                  * would have to be considered "in progress" (like the check
2476                  * above) for some seconds after our admin has seen the final
2477                  * wall message. */
2478
2479                 bus_manager_log_shutdown(m, a);
2480                 log_info("Running in dry run, suppressing action.");
2481                 reset_scheduled_shutdown(m);
2482
2483                 return 0;
2484         }
2485
2486         r = bus_manager_shutdown_or_sleep_now_or_later(m, a, &error);
2487         if (r < 0) {
2488                 log_error_errno(r, "Scheduled shutdown to %s failed: %m", a->target);
2489                 goto error;
2490         }
2491
2492         return 0;
2493
2494 error:
2495         reset_scheduled_shutdown(m);
2496         return r;
2497 }
2498
2499 static int method_schedule_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2500         Manager *m = ASSERT_PTR(userdata);
2501         HandleAction handle;
2502         const HandleActionData *a;
2503         uint64_t elapse;
2504         char *type;
2505         int r;
2506         bool dry_run = false;
2507
2508         assert(message);
2509
2510         r = sd_bus_message_read(message, "st", &type, &elapse);
2511         if (r < 0)
2512                 return r;
2513
2514         if (startswith(type, "dry-")) {
2515                 type += 4;
2516                 dry_run = true;
2517         }
2518
2519         handle = handle_action_from_string(type);
2520         if (!HANDLE_ACTION_IS_SHUTDOWN(handle))
2521                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unsupported shutdown type: %s", type);
2522
2523         assert_se(a = handle_action_lookup(handle));
2524         assert(a->polkit_action);
2525
2526         r = verify_shutdown_creds(m, message, a, 0, error);
2527         if (r != 0)
2528                 return r;
2529
2530         m->scheduled_shutdown_action = handle;
2531         m->shutdown_dry_run = dry_run;
2532         m->scheduled_shutdown_timeout = elapse;
2533
2534         r = manager_setup_shutdown_timers(m);
2535         if (r < 0)
2536                 return r;
2537
2538         r = setup_wall_message_timer(m, message);
2539         if (r >= 0)
2540                 r = update_schedule_file(m);
2541
2542         if (r < 0) {
2543                 reset_scheduled_shutdown(m);
2544                 return r;
2545         }
2546
2547         return sd_bus_reply_method_return(message, NULL);
2548 }
2549
2550 static int manager_setup_shutdown_timers(Manager* m) {
2551         int r;
2552
2553         r = event_reset_time(m->event, &m->scheduled_shutdown_timeout_source,
2554                              CLOCK_REALTIME,
2555                              m->scheduled_shutdown_timeout, 0,
2556                              manager_scheduled_shutdown_handler, m,
2557                              0, "scheduled-shutdown-timeout", true);
2558         if (r < 0)
2559                 goto fail;
2560
2561         r = event_reset_time(m->event, &m->nologin_timeout_source,
2562                              CLOCK_REALTIME,
2563                              nologin_timeout_usec(m->scheduled_shutdown_timeout), 0,
2564                              nologin_timeout_handler, m,
2565                              0, "nologin-timeout", true);
2566         if (r < 0)
2567                 goto fail;
2568
2569         return 0;
2570
2571 fail:
2572         m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2573         m->nologin_timeout_source = sd_event_source_unref(m->nologin_timeout_source);
2574
2575         return r;
2576 }
2577
2578 static int method_cancel_scheduled_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2579         Manager *m = ASSERT_PTR(userdata);
2580         const HandleActionData *a;
2581         bool cancelled;
2582         int r;
2583
2584         assert(message);
2585
2586         cancelled = handle_action_valid(m->scheduled_shutdown_action) && m->scheduled_shutdown_action != HANDLE_IGNORE;
2587         if (!cancelled)
2588                 return sd_bus_reply_method_return(message, "b", false);
2589
2590         assert_se(a = handle_action_lookup(m->scheduled_shutdown_action));
2591         if (!a->polkit_action)
2592                 return sd_bus_error_set(error, SD_BUS_ERROR_AUTH_FAILED, "Unsupported shutdown type");
2593
2594         r = bus_verify_polkit_async(
2595                         message,
2596                         a->polkit_action,
2597                         /* details= */ NULL,
2598                         &m->polkit_registry,
2599                         error);
2600         if (r < 0)
2601                 return r;
2602         if (r == 0)
2603                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2604
2605         if (m->enable_wall_messages) {
2606                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2607                 const char *tty = NULL;
2608                 uid_t uid = 0;
2609
2610                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
2611                 if (r >= 0) {
2612                         (void) sd_bus_creds_get_uid(creds, &uid);
2613                         (void) sd_bus_creds_get_tty(creds, &tty);
2614                 }
2615
2616                 _cleanup_free_ char *username = uid_to_name(uid);
2617
2618                 log_struct(LOG_INFO,
2619                            LOG_MESSAGE("System shutdown has been cancelled"),
2620                            "ACTION=%s", handle_action_to_string(a->handle),
2621                            "MESSAGE_ID=" SD_MESSAGE_SHUTDOWN_CANCELED_STR,
2622                            username ? "OPERATOR=%s" : NULL, username);
2623
2624                 (void) wall("System shutdown has been cancelled",
2625                             username, tty, logind_wall_tty_filter, m);
2626         }
2627
2628         reset_scheduled_shutdown(m);
2629
2630         return sd_bus_reply_method_return(message, "b", true);
2631 }
2632
2633 static int method_can_shutdown_or_sleep(
2634                 Manager *m,
2635                 sd_bus_message *message,
2636                 HandleAction action,
2637                 sd_bus_error *error) {
2638
2639         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2640         bool multiple_sessions, challenge, blocked, check_unit_state = true;
2641         const HandleActionData *a;
2642         const char *result = NULL;
2643         uid_t uid;
2644         int r;
2645
2646         assert(m);
2647         assert(message);
2648         assert(HANDLE_ACTION_IS_SHUTDOWN(action) || HANDLE_ACTION_IS_SLEEP(action));
2649
2650         if (action == HANDLE_SLEEP) {
2651                 HandleAction selected;
2652
2653                 selected = handle_action_sleep_select(m);
2654                 if (selected < 0)
2655                         return sd_bus_reply_method_return(message, "s", "na");
2656
2657                 check_unit_state = false; /* Already handled by handle_action_sleep_select */
2658
2659                 assert_se(a = handle_action_lookup(selected));
2660
2661         } else if (HANDLE_ACTION_IS_SLEEP(action)) {
2662                 SleepSupport support;
2663
2664                 assert_se(a = handle_action_lookup(action));
2665
2666                 assert(a->sleep_operation >= 0);
2667                 assert(a->sleep_operation < _SLEEP_OPERATION_MAX);
2668
2669                 r = sleep_supported_full(a->sleep_operation, &support);
2670                 if (r < 0)
2671                         return r;
2672                 if (r == 0)
2673                         return sd_bus_reply_method_return(message, "s", support == SLEEP_DISABLED ? "no" : "na");
2674         } else
2675                 assert_se(a = handle_action_lookup(action));
2676
2677         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
2678         if (r < 0)
2679                 return r;
2680
2681         r = sd_bus_creds_get_euid(creds, &uid);
2682         if (r < 0)
2683                 return r;
2684
2685         r = have_multiple_sessions(m, uid);
2686         if (r < 0)
2687                 return r;
2688
2689         multiple_sessions = r > 0;
2690         blocked = manager_is_inhibited(m, a->inhibit_what, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
2691
2692         if (check_unit_state && a->target) {
2693                 _cleanup_free_ char *load_state = NULL;
2694
2695                 r = unit_load_state(m->bus, a->target, &load_state);
2696                 if (r < 0)
2697                         return r;
2698
2699                 if (!streq(load_state, "loaded")) {
2700                         result = "no";
2701                         goto finish;
2702                 }
2703         }
2704
2705         if (multiple_sessions) {
2706                 r = bus_test_polkit(
2707                                 message,
2708                                 a->polkit_action_multiple_sessions,
2709                                 /* details= */ NULL,
2710                                 /* good_user= */ UID_INVALID,
2711                                 &challenge,
2712                                 error);
2713                 if (r < 0)
2714                         return r;
2715
2716                 if (r > 0)
2717                         result = "yes";
2718                 else if (challenge)
2719                         result = "challenge";
2720                 else
2721                         result = "no";
2722         }
2723
2724         if (blocked) {
2725                 r = bus_test_polkit(
2726                                 message,
2727                                 a->polkit_action_ignore_inhibit,
2728                                 /* details= */ NULL,
2729                                 /* good_user= */ UID_INVALID,
2730                                 &challenge,
2731                                 error);
2732                 if (r < 0)
2733                         return r;
2734
2735                 if (r > 0) {
2736                         if (!result)
2737                                 result = "yes";
2738                 } else if (challenge) {
2739                         if (!result || streq(result, "yes"))
2740                                 result = "challenge";
2741                 } else
2742                         result = "no";
2743         }
2744
2745         if (!multiple_sessions && !blocked) {
2746                 /* If neither inhibit nor multiple sessions
2747                  * apply then just check the normal policy */
2748
2749                 r = bus_test_polkit(
2750                                 message,
2751                                 a->polkit_action,
2752                                 /* details= */ NULL,
2753                                 /* good_user= */ UID_INVALID,
2754                                 &challenge,
2755                                 error);
2756                 if (r < 0)
2757                         return r;
2758
2759                 if (r > 0)
2760                         result = "yes";
2761                 else if (challenge)
2762                         result = "challenge";
2763                 else
2764                         result = "no";
2765         }
2766
2767  finish:
2768         return sd_bus_reply_method_return(message, "s", result);
2769 }
2770
2771 static int method_can_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2772         Manager *m = userdata;
2773
2774         return method_can_shutdown_or_sleep(m, message, HANDLE_POWEROFF, error);
2775 }
2776
2777 static int method_can_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2778         Manager *m = userdata;
2779
2780         return method_can_shutdown_or_sleep(m, message, HANDLE_REBOOT, error);
2781 }
2782
2783 static int method_can_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2784         Manager *m = userdata;
2785
2786         return method_can_shutdown_or_sleep(m, message, HANDLE_HALT, error);
2787 }
2788
2789 static int method_can_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2790         Manager *m = userdata;
2791
2792         return method_can_shutdown_or_sleep(m, message, HANDLE_SUSPEND, error);
2793 }
2794
2795 static int method_can_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2796         Manager *m = userdata;
2797
2798         return method_can_shutdown_or_sleep(m, message, HANDLE_HIBERNATE, error);
2799 }
2800
2801 static int method_can_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2802         Manager *m = userdata;
2803
2804         return method_can_shutdown_or_sleep(m, message, HANDLE_HYBRID_SLEEP, error);
2805 }
2806
2807 static int method_can_suspend_then_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2808         Manager *m = userdata;
2809
2810         return method_can_shutdown_or_sleep(m, message, HANDLE_SUSPEND_THEN_HIBERNATE, error);
2811 }
2812
2813 static int method_can_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2814         Manager *m = userdata;
2815
2816         return method_can_shutdown_or_sleep(m, message, HANDLE_SLEEP, error);
2817 }
2818
2819 static int property_get_reboot_parameter(
2820                 sd_bus *bus,
2821                 const char *path,
2822                 const char *interface,
2823                 const char *property,
2824                 sd_bus_message *reply,
2825                 void *userdata,
2826                 sd_bus_error *error) {
2827         _cleanup_free_ char *parameter = NULL;
2828         int r;
2829
2830         assert(bus);
2831         assert(reply);
2832         assert(userdata);
2833
2834         r = read_reboot_parameter(&parameter);
2835         if (r < 0)
2836                 return r;
2837
2838         return sd_bus_message_append(reply, "s", parameter);
2839 }
2840
2841 static int method_set_reboot_parameter(
2842                 sd_bus_message *message,
2843                 void *userdata,
2844                 sd_bus_error *error) {
2845
2846         Manager *m = ASSERT_PTR(userdata);
2847         const char *arg;
2848         int r;
2849
2850         assert(message);
2851
2852         r = sd_bus_message_read(message, "s", &arg);
2853         if (r < 0)
2854                 return r;
2855
2856         r = detect_container();
2857         if (r < 0)
2858                 return r;
2859         if (r > 0)
2860                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED,
2861                                          "Reboot parameter not supported in containers, refusing.");
2862
2863         r = bus_verify_polkit_async(
2864                         message,
2865                         "org.freedesktop.login1.set-reboot-parameter",
2866                         /* details= */ NULL,
2867                         &m->polkit_registry,
2868                         error);
2869         if (r < 0)
2870                 return r;
2871         if (r == 0)
2872                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2873
2874         r = update_reboot_parameter_and_warn(arg, false);
2875         if (r < 0)
2876                 return r;
2877
2878         return sd_bus_reply_method_return(message, NULL);
2879 }
2880
2881 static int method_can_reboot_parameter(
2882                 sd_bus_message *message,
2883                 void *userdata,
2884                 sd_bus_error *error) {
2885
2886         _unused_ Manager *m = ASSERT_PTR(userdata);
2887         int r;
2888
2889         assert(message);
2890
2891         r = detect_container();
2892         if (r < 0)
2893                 return r;
2894         if (r > 0) /* Inside containers, specifying a reboot parameter, doesn't make much sense */
2895                 return sd_bus_reply_method_return(message, "s", "na");
2896
2897         return return_test_polkit(
2898                         message,
2899                         "org.freedesktop.login1.set-reboot-parameter",
2900                         /* details= */ NULL,
2901                         /* good_user= */ UID_INVALID,
2902                         error);
2903 }
2904
2905 static int property_get_reboot_to_firmware_setup(
2906                 sd_bus *bus,
2907                 const char *path,
2908                 const char *interface,
2909                 const char *property,
2910                 sd_bus_message *reply,
2911                 void *userdata,
2912                 sd_bus_error *error) {
2913         int r;
2914
2915         assert(bus);
2916         assert(reply);
2917         assert(userdata);
2918
2919         r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
2920         if (r == -ENXIO) {
2921                 /* EFI case: let's see what is currently configured in the EFI variables */
2922                 r = efi_get_reboot_to_firmware();
2923                 if (r < 0 && r != -EOPNOTSUPP)
2924                         log_warning_errno(r, "Failed to determine reboot-to-firmware-setup state: %m");
2925         } else if (r < 0)
2926                 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
2927         else if (r > 0) {
2928                 /* Non-EFI case: let's see whether /run/systemd/reboot-to-firmware-setup exists. */
2929                 if (access("/run/systemd/reboot-to-firmware-setup", F_OK) < 0) {
2930                         if (errno != ENOENT)
2931                                 log_warning_errno(errno, "Failed to check whether /run/systemd/reboot-to-firmware-setup exists: %m");
2932
2933                         r = false;
2934                 } else
2935                         r = true;
2936         }
2937
2938         return sd_bus_message_append(reply, "b", r > 0);
2939 }
2940
2941 static int method_set_reboot_to_firmware_setup(
2942                 sd_bus_message *message,
2943                 void *userdata,
2944                 sd_bus_error *error) {
2945
2946         Manager *m = ASSERT_PTR(userdata);
2947         bool use_efi;
2948         int b, r;
2949
2950         assert(message);
2951
2952         r = sd_bus_message_read(message, "b", &b);
2953         if (r < 0)
2954                 return r;
2955
2956         r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
2957         if (r == -ENXIO) {
2958                 /* EFI case: let's see what the firmware supports */
2959
2960                 r = efi_reboot_to_firmware_supported();
2961                 if (r == -EOPNOTSUPP)
2962                         return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Firmware does not support boot into firmware.");
2963                 if (r < 0)
2964                         return r;
2965
2966                 use_efi = true;
2967
2968         } else if (r <= 0) {
2969                 /* non-EFI case: $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP is set to off */
2970
2971                 if (r < 0)
2972                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
2973
2974                 return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Firmware does not support boot into firmware.");
2975         } else
2976                 /* non-EFI case: $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP is set to on */
2977                 use_efi = false;
2978
2979         r = bus_verify_polkit_async(
2980                         message,
2981                         "org.freedesktop.login1.set-reboot-to-firmware-setup",
2982                         /* details= */ NULL,
2983                         &m->polkit_registry,
2984                         error);
2985         if (r < 0)
2986                 return r;
2987         if (r == 0)
2988                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2989
2990         if (use_efi) {
2991                 r = efi_set_reboot_to_firmware(b);
2992                 if (r < 0)
2993                         return r;
2994         } else {
2995                 if (b) {
2996                         r = touch("/run/systemd/reboot-to-firmware-setup");
2997                         if (r < 0)
2998                                 return r;
2999                 } else {
3000                         if (unlink("/run/systemd/reboot-to-firmware-setup") < 0 && errno != ENOENT)
3001                                 return -errno;
3002                 }
3003         }
3004
3005         return sd_bus_reply_method_return(message, NULL);
3006 }
3007
3008 static int method_can_reboot_to_firmware_setup(
3009                 sd_bus_message *message,
3010                 void *userdata,
3011                 sd_bus_error *error) {
3012
3013         _unused_ Manager *m = ASSERT_PTR(userdata);
3014         int r;
3015
3016         assert(message);
3017
3018         r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
3019         if (r == -ENXIO) {
3020                 /* EFI case: let's see what the firmware supports */
3021
3022                 r = efi_reboot_to_firmware_supported();
3023                 if (r < 0) {
3024                         if (r != -EOPNOTSUPP)
3025                                 log_warning_errno(r, "Failed to determine whether reboot to firmware is supported: %m");
3026
3027                         return sd_bus_reply_method_return(message, "s", "na");
3028                 }
3029
3030         } else if (r <= 0) {
3031                 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP */
3032
3033                 if (r < 0)
3034                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
3035
3036                 return sd_bus_reply_method_return(message, "s", "na");
3037         }
3038
3039         return return_test_polkit(
3040                         message,
3041                         "org.freedesktop.login1.set-reboot-to-firmware-setup",
3042                         /* details= */ NULL,
3043                         /* good_user= */ UID_INVALID,
3044                         error);
3045 }
3046
3047 static int property_get_reboot_to_boot_loader_menu(
3048                 sd_bus *bus,
3049                 const char *path,
3050                 const char *interface,
3051                 const char *property,
3052                 sd_bus_message *reply,
3053                 void *userdata,
3054                 sd_bus_error *error) {
3055
3056         uint64_t x = UINT64_MAX;
3057         int r;
3058
3059         assert(bus);
3060         assert(reply);
3061         assert(userdata);
3062
3063         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
3064         if (r == -ENXIO) {
3065                 /* EFI case: returns the current value of LoaderConfigTimeoutOneShot. Three cases are distinguished:
3066                  *
3067                  *     1. Variable not set, boot into boot loader menu is not enabled (we return UINT64_MAX to the user)
3068                  *     2. Variable set to "0", boot into boot loader menu is enabled with no timeout (we return 0 to the user)
3069                  *     3. Variable set to numeric value formatted in ASCII, boot into boot loader menu with the specified timeout in seconds
3070                  */
3071
3072                 r = efi_loader_get_config_timeout_one_shot(&x);
3073                 if (r < 0) {
3074                         if (r != -ENOENT)
3075                                 log_warning_errno(r, "Failed to read LoaderConfigTimeoutOneShot variable, ignoring: %m");
3076                 }
3077
3078         } else if (r < 0)
3079                 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
3080         else if (r > 0) {
3081                 _cleanup_free_ char *v = NULL;
3082
3083                 /* Non-EFI case, let's process /run/systemd/reboot-to-boot-loader-menu. */
3084
3085                 r = read_one_line_file("/run/systemd/reboot-to-boot-loader-menu", &v);
3086                 if (r < 0) {
3087                         if (r != -ENOENT)
3088                                 log_warning_errno(r, "Failed to read /run/systemd/reboot-to-boot-loader-menu: %m");
3089                 } else {
3090                         r = safe_atou64(v, &x);
3091                         if (r < 0)
3092                                 log_warning_errno(r, "Failed to parse /run/systemd/reboot-to-boot-loader-menu: %m");
3093                 }
3094         }
3095
3096         return sd_bus_message_append(reply, "t", x);
3097 }
3098
3099 static int method_set_reboot_to_boot_loader_menu(
3100                 sd_bus_message *message,
3101                 void *userdata,
3102                 sd_bus_error *error) {
3103
3104         Manager *m = ASSERT_PTR(userdata);
3105         bool use_efi;
3106         uint64_t x;
3107         int r;
3108
3109         assert(message);
3110
3111         r = sd_bus_message_read(message, "t", &x);
3112         if (r < 0)
3113                 return r;
3114
3115         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
3116         if (r == -ENXIO) {
3117                 uint64_t features;
3118
3119                 /* EFI case: let's see if booting into boot loader menu is supported. */
3120
3121                 r = efi_loader_get_features(&features);
3122                 if (r < 0)
3123                         log_warning_errno(r, "Failed to determine whether reboot to boot loader menu is supported: %m");
3124                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT))
3125                         return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader does not support boot into boot loader menu.");
3126
3127                 use_efi = true;
3128
3129         } else if (r <= 0) {
3130                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU is set to off */
3131
3132                 if (r < 0)
3133                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
3134
3135                 return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader does not support boot into boot loader menu.");
3136         } else
3137                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU is set to on */
3138                 use_efi = false;
3139
3140         r = bus_verify_polkit_async(
3141                         message,
3142                         "org.freedesktop.login1.set-reboot-to-boot-loader-menu",
3143                         /* details= */ NULL,
3144                         &m->polkit_registry,
3145                         error);
3146         if (r < 0)
3147                 return r;
3148         if (r == 0)
3149                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
3150
3151         if (use_efi) {
3152                 if (x == UINT64_MAX)
3153                         r = efi_set_variable(EFI_LOADER_VARIABLE(LoaderConfigTimeoutOneShot), NULL, 0);
3154                 else {
3155                         char buf[DECIMAL_STR_MAX(uint64_t) + 1];
3156                         xsprintf(buf, "%" PRIu64, DIV_ROUND_UP(x, USEC_PER_SEC)); /* second granularity */
3157
3158                         r = efi_set_variable_string(EFI_LOADER_VARIABLE(LoaderConfigTimeoutOneShot), buf);
3159                 }
3160                 if (r < 0)
3161                         return r;
3162         } else {
3163                 if (x == UINT64_MAX) {
3164                         if (unlink("/run/systemd/reboot-to-boot-loader-menu") < 0 && errno != ENOENT)
3165                                 return -errno;
3166                 } else {
3167                         char buf[DECIMAL_STR_MAX(uint64_t) + 1];
3168
3169                         xsprintf(buf, "%" PRIu64, x); /* μs granularity */
3170
3171                         r = write_string_file_atomic_label("/run/systemd/reboot-to-boot-loader-menu", buf);
3172                         if (r < 0)
3173                                 return r;
3174                 }
3175         }
3176
3177         return sd_bus_reply_method_return(message, NULL);
3178 }
3179
3180 static int method_can_reboot_to_boot_loader_menu(
3181                 sd_bus_message *message,
3182                 void *userdata,
3183                 sd_bus_error *error) {
3184
3185         _unused_ Manager *m = ASSERT_PTR(userdata);
3186         int r;
3187
3188         assert(message);
3189
3190         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
3191         if (r == -ENXIO) {
3192                 uint64_t features = 0;
3193
3194                 /* EFI case, let's see if booting into boot loader menu is supported. */
3195
3196                 r = efi_loader_get_features(&features);
3197                 if (r < 0)
3198                         log_warning_errno(r, "Failed to determine whether reboot to boot loader menu is supported: %m");
3199                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT))
3200                         return sd_bus_reply_method_return(message, "s", "na");
3201
3202         } else if (r <= 0) {
3203                 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU */
3204
3205                 if (r < 0)
3206                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
3207
3208                 return sd_bus_reply_method_return(message, "s", "na");
3209         }
3210
3211         return return_test_polkit(
3212                         message,
3213                         "org.freedesktop.login1.set-reboot-to-boot-loader-menu",
3214                         /* details= */ NULL,
3215                         /* good_user= */ UID_INVALID,
3216                         error);
3217 }
3218
3219 static int property_get_reboot_to_boot_loader_entry(
3220                 sd_bus *bus,
3221                 const char *path,
3222                 const char *interface,
3223                 const char *property,
3224                 sd_bus_message *reply,
3225                 void *userdata,
3226                 sd_bus_error *error) {
3227
3228         _cleanup_free_ char *v = NULL;
3229         Manager *m = ASSERT_PTR(userdata);
3230         const char *x = NULL;
3231         int r;
3232
3233         assert(bus);
3234         assert(reply);
3235
3236         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
3237         if (r == -ENXIO) {
3238                 /* EFI case: let's read the LoaderEntryOneShot variable */
3239
3240                 r = efi_loader_update_entry_one_shot_cache(&m->efi_loader_entry_one_shot, &m->efi_loader_entry_one_shot_stat);
3241                 if (r < 0) {
3242                         if (r != -ENOENT)
3243                                 log_warning_errno(r, "Failed to read LoaderEntryOneShot variable, ignoring: %m");
3244                 } else
3245                         x = m->efi_loader_entry_one_shot;
3246
3247         } else if (r < 0)
3248                 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
3249         else if (r > 0) {
3250
3251                 /* Non-EFI case, let's process /run/systemd/reboot-to-boot-loader-entry. */
3252
3253                 r = read_one_line_file("/run/systemd/reboot-to-boot-loader-entry", &v);
3254                 if (r < 0) {
3255                         if (r != -ENOENT)
3256                                 log_warning_errno(r, "Failed to read /run/systemd/reboot-to-boot-loader-entry, ignoring: %m");
3257                 } else if (!efi_loader_entry_name_valid(v))
3258                         log_warning("/run/systemd/reboot-to-boot-loader-entry is not valid, ignoring.");
3259                 else
3260                         x = v;
3261         }
3262
3263         return sd_bus_message_append(reply, "s", x);
3264 }
3265
3266 static int boot_loader_entry_exists(Manager *m, const char *id) {
3267         _cleanup_(boot_config_free) BootConfig config = BOOT_CONFIG_NULL;
3268         int r;
3269
3270         assert(m);
3271         assert(id);
3272
3273         r = boot_config_load_auto(&config, NULL, NULL);
3274         if (r < 0 && r != -ENOKEY) /* don't complain if no GPT is found, hence skip ENOKEY */
3275                 return r;
3276
3277         r = manager_read_efi_boot_loader_entries(m);
3278         if (r >= 0)
3279                 (void) boot_config_augment_from_loader(&config, m->efi_boot_loader_entries, /* auto_only= */ true);
3280
3281         return !!boot_config_find_entry(&config, id);
3282 }
3283
3284 static int method_set_reboot_to_boot_loader_entry(
3285                 sd_bus_message *message,
3286                 void *userdata,
3287                 sd_bus_error *error) {
3288
3289         Manager *m = ASSERT_PTR(userdata);
3290         bool use_efi;
3291         const char *v;
3292         int r;
3293
3294         assert(message);
3295
3296         r = sd_bus_message_read(message, "s", &v);
3297         if (r < 0)
3298                 return r;
3299
3300         if (isempty(v))
3301                 v = NULL;
3302         else if (efi_loader_entry_name_valid(v)) {
3303                 r = boot_loader_entry_exists(m, v);
3304                 if (r < 0)
3305                         return r;
3306                 if (r == 0)
3307                         return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader entry '%s' is not known.", v);
3308         } else
3309                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Boot loader entry name '%s' is not valid, refusing.", v);
3310
3311         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
3312         if (r == -ENXIO) {
3313                 uint64_t features;
3314
3315                 /* EFI case: let's see if booting into boot loader entry is supported. */
3316
3317                 r = efi_loader_get_features(&features);
3318                 if (r < 0)
3319                         log_warning_errno(r, "Failed to determine whether reboot into boot loader entry is supported: %m");
3320                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_ENTRY_ONESHOT))
3321                         return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Loader does not support boot into boot loader entry.");
3322
3323                 use_efi = true;
3324
3325         } else if (r <= 0) {
3326                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY is set to off */
3327
3328                 if (r < 0)
3329                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
3330
3331                 return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Loader does not support boot into boot loader entry.");
3332         } else
3333                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY is set to on */
3334                 use_efi = false;
3335
3336         r = bus_verify_polkit_async(
3337                         message,
3338                         "org.freedesktop.login1.set-reboot-to-boot-loader-entry",
3339                         /* details= */ NULL,
3340                         &m->polkit_registry,
3341                         error);
3342         if (r < 0)
3343                 return r;
3344         if (r == 0)
3345                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
3346
3347         if (use_efi) {
3348                 if (isempty(v))
3349                         /* Delete item */
3350                         r = efi_set_variable(EFI_LOADER_VARIABLE(LoaderEntryOneShot), NULL, 0);
3351                 else
3352                         r = efi_set_variable_string(EFI_LOADER_VARIABLE(LoaderEntryOneShot), v);
3353                 if (r < 0)
3354                         return r;
3355         } else {
3356                 if (isempty(v)) {
3357                         if (unlink("/run/systemd/reboot-to-boot-loader-entry") < 0 && errno != ENOENT)
3358                                 return -errno;
3359                 } else {
3360                         r = write_string_file_atomic_label("/run/systemd/reboot-boot-to-loader-entry", v);
3361                         if (r < 0)
3362                                 return r;
3363                 }
3364         }
3365
3366         return sd_bus_reply_method_return(message, NULL);
3367 }
3368
3369 static int method_can_reboot_to_boot_loader_entry(
3370                 sd_bus_message *message,
3371                 void *userdata,
3372                 sd_bus_error *error) {
3373
3374         _unused_ Manager *m = ASSERT_PTR(userdata);
3375         int r;
3376
3377         assert(message);
3378
3379         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
3380         if (r == -ENXIO) {
3381                 uint64_t features = 0;
3382
3383                 /* EFI case, let's see if booting into boot loader entry is supported. */
3384
3385                 r = efi_loader_get_features(&features);
3386                 if (r < 0)
3387                         log_warning_errno(r, "Failed to determine whether reboot to boot loader entry is supported: %m");
3388                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_ENTRY_ONESHOT))
3389                         return sd_bus_reply_method_return(message, "s", "na");
3390
3391         } else if (r <= 0) {
3392                 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY */
3393
3394                 if (r < 0)
3395                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
3396
3397                 return sd_bus_reply_method_return(message, "s", "na");
3398         }
3399
3400         return return_test_polkit(
3401                         message,
3402                         "org.freedesktop.login1.set-reboot-to-boot-loader-entry",
3403                         /* details= */ NULL,
3404                         /* good_user= */ UID_INVALID,
3405                         error);
3406 }
3407
3408 static int property_get_boot_loader_entries(
3409                 sd_bus *bus,
3410                 const char *path,
3411                 const char *interface,
3412                 const char *property,
3413                 sd_bus_message *reply,
3414                 void *userdata,
3415                 sd_bus_error *error) {
3416
3417         _cleanup_(boot_config_free) BootConfig config = BOOT_CONFIG_NULL;
3418         Manager *m = ASSERT_PTR(userdata);
3419         size_t i;
3420         int r;
3421
3422         assert(bus);
3423         assert(reply);
3424
3425         r = boot_config_load_auto(&config, NULL, NULL);
3426         if (r < 0 && r != -ENOKEY) /* don't complain if there's no GPT found */
3427                 return r;
3428
3429         r = manager_read_efi_boot_loader_entries(m);
3430         if (r >= 0)
3431                 (void) boot_config_augment_from_loader(&config, m->efi_boot_loader_entries, /* auto_only= */ true);
3432
3433         r = sd_bus_message_open_container(reply, 'a', "s");
3434         if (r < 0)
3435                 return r;
3436
3437         for (i = 0; i < config.n_entries; i++) {
3438                 BootEntry *e = config.entries + i;
3439
3440                 r = sd_bus_message_append(reply, "s", e->id);
3441                 if (r < 0)
3442                         return r;
3443         }
3444
3445         return sd_bus_message_close_container(reply);
3446 }
3447
3448 static int method_set_wall_message(
3449                 sd_bus_message *message,
3450                 void *userdata,
3451                 sd_bus_error *error) {
3452
3453         int r;
3454         Manager *m = ASSERT_PTR(userdata);
3455         char *wall_message;
3456         int enable_wall_messages;
3457
3458         assert(message);
3459
3460         r = sd_bus_message_read(message, "sb", &wall_message, &enable_wall_messages);
3461         if (r < 0)
3462                 return r;
3463
3464         if (strlen(wall_message) > WALL_MESSAGE_MAX)
3465                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3466                         "Wall message too long, maximum permitted length is %u characters.",
3467                         WALL_MESSAGE_MAX);
3468
3469         /* Short-circuit the operation if the desired state is already in place, to
3470          * avoid an unnecessary polkit permission check. */
3471         if (streq_ptr(m->wall_message, empty_to_null(wall_message)) &&
3472             m->enable_wall_messages == enable_wall_messages)
3473                 goto done;
3474
3475         r = bus_verify_polkit_async(
3476                         message,
3477                         "org.freedesktop.login1.set-wall-message",
3478                         /* details= */ NULL,
3479                         &m->polkit_registry,
3480                         error);
3481         if (r < 0)
3482                 return r;
3483         if (r == 0)
3484                 return 1; /* Will call us back */
3485
3486         r = free_and_strdup(&m->wall_message, empty_to_null(wall_message));
3487         if (r < 0)
3488                 return log_oom();
3489
3490         m->enable_wall_messages = enable_wall_messages;
3491
3492  done:
3493         return sd_bus_reply_method_return(message, NULL);
3494 }
3495
3496 static int method_inhibit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3497         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
3498         _cleanup_(pidref_done) PidRef pidref = PIDREF_NULL;
3499         const char *who, *why, *what, *mode;
3500         _cleanup_free_ char *id = NULL;
3501         _cleanup_close_ int fifo_fd = -EBADF;
3502         Manager *m = ASSERT_PTR(userdata);
3503         InhibitMode mm;
3504         InhibitWhat w;
3505         pid_t pid;
3506         uid_t uid;
3507         int r;
3508
3509         assert(message);
3510
3511         r = sd_bus_message_read(message, "ssss", &what, &who, &why, &mode);
3512         if (r < 0)
3513                 return r;
3514
3515         w = inhibit_what_from_string(what);
3516         if (w <= 0)
3517                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3518                                          "Invalid what specification %s", what);
3519
3520         mm = inhibit_mode_from_string(mode);
3521         if (mm < 0)
3522                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3523                                          "Invalid mode specification %s", mode);
3524
3525         /* Delay is only supported for shutdown/sleep */
3526         if (mm == INHIBIT_DELAY && (w & ~(INHIBIT_SHUTDOWN|INHIBIT_SLEEP)))
3527                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3528                                          "Delay inhibitors only supported for shutdown and sleep");
3529
3530         /* Don't allow taking delay locks while we are already
3531          * executing the operation. We shouldn't create the impression
3532          * that the lock was successful if the machine is about to go
3533          * down/suspend any moment. */
3534         if (m->delayed_action && m->delayed_action->inhibit_what & w)
3535                 return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS,
3536                                          "The operation inhibition has been requested for is already running");
3537
3538         r = bus_verify_polkit_async(
3539                         message,
3540                         w == INHIBIT_SHUTDOWN             ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-shutdown" : "org.freedesktop.login1.inhibit-delay-shutdown") :
3541                         w == INHIBIT_SLEEP                ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-sleep"    : "org.freedesktop.login1.inhibit-delay-sleep") :
3542                         w == INHIBIT_IDLE                 ? "org.freedesktop.login1.inhibit-block-idle" :
3543                         w == INHIBIT_HANDLE_POWER_KEY     ? "org.freedesktop.login1.inhibit-handle-power-key" :
3544                         w == INHIBIT_HANDLE_SUSPEND_KEY   ? "org.freedesktop.login1.inhibit-handle-suspend-key" :
3545                         w == INHIBIT_HANDLE_REBOOT_KEY    ? "org.freedesktop.login1.inhibit-handle-reboot-key" :
3546                         w == INHIBIT_HANDLE_HIBERNATE_KEY ? "org.freedesktop.login1.inhibit-handle-hibernate-key" :
3547                                                             "org.freedesktop.login1.inhibit-handle-lid-switch",
3548                         /* details= */ NULL,
3549                         &m->polkit_registry,
3550                         error);
3551         if (r < 0)
3552                 return r;
3553         if (r == 0)
3554                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
3555
3556         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID|SD_BUS_CREDS_PID, &creds);
3557         if (r < 0)
3558                 return r;
3559
3560         r = sd_bus_creds_get_euid(creds, &uid);
3561         if (r < 0)
3562                 return r;
3563
3564         r = sd_bus_creds_get_pid(creds, &pid);
3565         if (r < 0)
3566                 return r;
3567
3568         r = pidref_set_pid(&pidref, pid);
3569         if (r < 0)
3570                 return sd_bus_error_set_errnof(error, r, "Failed pin source process "PID_FMT": %m", pid);
3571
3572         if (hashmap_size(m->inhibitors) >= m->inhibitors_max)
3573                 return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED,
3574                                          "Maximum number of inhibitors (%" PRIu64 ") reached, refusing further inhibitors.",
3575                                          m->inhibitors_max);
3576
3577         do {
3578                 id = mfree(id);
3579
3580                 if (asprintf(&id, "%" PRIu64, ++m->inhibit_counter) < 0)
3581                         return -ENOMEM;
3582
3583         } while (hashmap_get(m->inhibitors, id));
3584
3585         _cleanup_(inhibitor_freep) Inhibitor *i = NULL;
3586         r = manager_add_inhibitor(m, id, &i);
3587         if (r < 0)
3588                 return r;
3589
3590         i->what = w;
3591         i->mode = mm;
3592         i->pid = TAKE_PIDREF(pidref);
3593         i->uid = uid;
3594         i->why = strdup(why);
3595         i->who = strdup(who);
3596
3597         if (!i->why || !i->who)
3598                 return -ENOMEM;
3599
3600         fifo_fd = inhibitor_create_fifo(i);
3601         if (fifo_fd < 0)
3602                 return fifo_fd;
3603
3604         r = inhibitor_start(i);
3605         if (r < 0)
3606                 return r;
3607         TAKE_PTR(i);
3608
3609         return sd_bus_reply_method_return(message, "h", fifo_fd);
3610 }
3611
3612 static const sd_bus_vtable manager_vtable[] = {
3613         SD_BUS_VTABLE_START(0),
3614
3615         SD_BUS_WRITABLE_PROPERTY("EnableWallMessages", "b", bus_property_get_bool, bus_property_set_bool, offsetof(Manager, enable_wall_messages), 0),
3616         SD_BUS_WRITABLE_PROPERTY("WallMessage", "s", NULL, NULL, offsetof(Manager, wall_message), 0),
3617
3618         SD_BUS_PROPERTY("NAutoVTs", "u", NULL, offsetof(Manager, n_autovts), SD_BUS_VTABLE_PROPERTY_CONST),
3619         SD_BUS_PROPERTY("KillOnlyUsers", "as", NULL, offsetof(Manager, kill_only_users), SD_BUS_VTABLE_PROPERTY_CONST),
3620         SD_BUS_PROPERTY("KillExcludeUsers", "as", NULL, offsetof(Manager, kill_exclude_users), SD_BUS_VTABLE_PROPERTY_CONST),
3621         SD_BUS_PROPERTY("KillUserProcesses", "b", bus_property_get_bool, offsetof(Manager, kill_user_processes), SD_BUS_VTABLE_PROPERTY_CONST),
3622         SD_BUS_PROPERTY("RebootParameter", "s", property_get_reboot_parameter, 0, 0),
3623         SD_BUS_PROPERTY("RebootToFirmwareSetup", "b", property_get_reboot_to_firmware_setup, 0, 0),
3624         SD_BUS_PROPERTY("RebootToBootLoaderMenu", "t", property_get_reboot_to_boot_loader_menu, 0, 0),
3625         SD_BUS_PROPERTY("RebootToBootLoaderEntry", "s", property_get_reboot_to_boot_loader_entry, 0, 0),
3626         SD_BUS_PROPERTY("BootLoaderEntries", "as", property_get_boot_loader_entries, 0, SD_BUS_VTABLE_PROPERTY_CONST),
3627         SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3628         SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3629         SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3630         SD_BUS_PROPERTY("BlockInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3631         SD_BUS_PROPERTY("DelayInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3632         SD_BUS_PROPERTY("InhibitDelayMaxUSec", "t", NULL, offsetof(Manager, inhibit_delay_max), SD_BUS_VTABLE_PROPERTY_CONST),
3633         SD_BUS_PROPERTY("UserStopDelayUSec", "t", NULL, offsetof(Manager, user_stop_delay), SD_BUS_VTABLE_PROPERTY_CONST),
3634         SD_BUS_PROPERTY("SleepOperation", "as", property_get_sleep_operations, 0, SD_BUS_VTABLE_PROPERTY_CONST),
3635         SD_BUS_PROPERTY("HandlePowerKey", "s", property_get_handle_action, offsetof(Manager, handle_power_key), SD_BUS_VTABLE_PROPERTY_CONST),
3636         SD_BUS_PROPERTY("HandlePowerKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_power_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3637         SD_BUS_PROPERTY("HandleRebootKey", "s", property_get_handle_action, offsetof(Manager, handle_reboot_key), SD_BUS_VTABLE_PROPERTY_CONST),
3638         SD_BUS_PROPERTY("HandleRebootKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_reboot_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3639         SD_BUS_PROPERTY("HandleSuspendKey", "s", property_get_handle_action, offsetof(Manager, handle_suspend_key), SD_BUS_VTABLE_PROPERTY_CONST),
3640         SD_BUS_PROPERTY("HandleSuspendKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_suspend_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3641         SD_BUS_PROPERTY("HandleHibernateKey", "s", property_get_handle_action, offsetof(Manager, handle_hibernate_key), SD_BUS_VTABLE_PROPERTY_CONST),
3642         SD_BUS_PROPERTY("HandleHibernateKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_hibernate_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3643         SD_BUS_PROPERTY("HandleLidSwitch", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch), SD_BUS_VTABLE_PROPERTY_CONST),
3644         SD_BUS_PROPERTY("HandleLidSwitchExternalPower", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch_ep), SD_BUS_VTABLE_PROPERTY_CONST),
3645         SD_BUS_PROPERTY("HandleLidSwitchDocked", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch_docked), SD_BUS_VTABLE_PROPERTY_CONST),
3646         SD_BUS_PROPERTY("HoldoffTimeoutUSec", "t", NULL, offsetof(Manager, holdoff_timeout_usec), SD_BUS_VTABLE_PROPERTY_CONST),
3647         SD_BUS_PROPERTY("IdleAction", "s", property_get_handle_action, offsetof(Manager, idle_action), SD_BUS_VTABLE_PROPERTY_CONST),
3648         SD_BUS_PROPERTY("IdleActionUSec", "t", NULL, offsetof(Manager, idle_action_usec), SD_BUS_VTABLE_PROPERTY_CONST),
3649         SD_BUS_PROPERTY("PreparingForShutdown", "b", property_get_preparing, 0, 0),
3650         SD_BUS_PROPERTY("PreparingForSleep", "b", property_get_preparing, 0, 0),
3651         SD_BUS_PROPERTY("ScheduledShutdown", "(st)", property_get_scheduled_shutdown, 0, 0),
3652         SD_BUS_PROPERTY("Docked", "b", property_get_docked, 0, 0),
3653         SD_BUS_PROPERTY("LidClosed", "b", property_get_lid_closed, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3654         SD_BUS_PROPERTY("OnExternalPower", "b", property_get_on_external_power, 0, 0),
3655         SD_BUS_PROPERTY("RemoveIPC", "b", bus_property_get_bool, offsetof(Manager, remove_ipc), SD_BUS_VTABLE_PROPERTY_CONST),
3656         SD_BUS_PROPERTY("RuntimeDirectorySize", "t", NULL, offsetof(Manager, runtime_dir_size), SD_BUS_VTABLE_PROPERTY_CONST),
3657         SD_BUS_PROPERTY("RuntimeDirectoryInodesMax", "t", NULL, offsetof(Manager, runtime_dir_inodes), SD_BUS_VTABLE_PROPERTY_CONST),
3658         SD_BUS_PROPERTY("InhibitorsMax", "t", NULL, offsetof(Manager, inhibitors_max), SD_BUS_VTABLE_PROPERTY_CONST),
3659         SD_BUS_PROPERTY("NCurrentInhibitors", "t", property_get_hashmap_size, offsetof(Manager, inhibitors), 0),
3660         SD_BUS_PROPERTY("SessionsMax", "t", NULL, offsetof(Manager, sessions_max), SD_BUS_VTABLE_PROPERTY_CONST),
3661         SD_BUS_PROPERTY("NCurrentSessions", "t", property_get_hashmap_size, offsetof(Manager, sessions), 0),
3662         SD_BUS_PROPERTY("UserTasksMax", "t", property_get_compat_user_tasks_max, 0, SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
3663         SD_BUS_PROPERTY("StopIdleSessionUSec", "t", NULL, offsetof(Manager, stop_idle_session_usec), SD_BUS_VTABLE_PROPERTY_CONST),
3664
3665         SD_BUS_METHOD_WITH_ARGS("GetSession",
3666                                 SD_BUS_ARGS("s", session_id),
3667                                 SD_BUS_RESULT("o", object_path),
3668                                 method_get_session,
3669                                 SD_BUS_VTABLE_UNPRIVILEGED),
3670         SD_BUS_METHOD_WITH_ARGS("GetSessionByPID",
3671                                 SD_BUS_ARGS("u", pid),
3672                                 SD_BUS_RESULT("o", object_path),
3673                                 method_get_session_by_pid,
3674                                 SD_BUS_VTABLE_UNPRIVILEGED),
3675         SD_BUS_METHOD_WITH_ARGS("GetUser",
3676                                 SD_BUS_ARGS("u", uid),
3677                                 SD_BUS_RESULT("o", object_path),
3678                                 method_get_user,
3679                                 SD_BUS_VTABLE_UNPRIVILEGED),
3680         SD_BUS_METHOD_WITH_ARGS("GetUserByPID",
3681                                 SD_BUS_ARGS("u", pid),
3682                                 SD_BUS_RESULT("o", object_path),
3683                                 method_get_user_by_pid,
3684                                 SD_BUS_VTABLE_UNPRIVILEGED),
3685         SD_BUS_METHOD_WITH_ARGS("GetSeat",
3686                                 SD_BUS_ARGS("s", seat_id),
3687                                 SD_BUS_RESULT("o", object_path),
3688                                 method_get_seat,
3689                                 SD_BUS_VTABLE_UNPRIVILEGED),
3690         SD_BUS_METHOD_WITH_ARGS("ListSessions",
3691                                 SD_BUS_NO_ARGS,
3692                                 SD_BUS_RESULT("a(susso)", sessions),
3693                                 method_list_sessions,
3694                                 SD_BUS_VTABLE_UNPRIVILEGED),
3695         SD_BUS_METHOD_WITH_ARGS("ListSessionsEx",
3696                                 SD_BUS_NO_ARGS,
3697                                 SD_BUS_RESULT("a(sussussbto)", sessions),
3698                                 method_list_sessions_ex,
3699                                 SD_BUS_VTABLE_UNPRIVILEGED),
3700         SD_BUS_METHOD_WITH_ARGS("ListUsers",
3701                                 SD_BUS_NO_ARGS,
3702                                 SD_BUS_RESULT("a(uso)", users),
3703                                 method_list_users,
3704                                 SD_BUS_VTABLE_UNPRIVILEGED),
3705         SD_BUS_METHOD_WITH_ARGS("ListSeats",
3706                                 SD_BUS_NO_ARGS,
3707                                 SD_BUS_RESULT("a(so)", seats),
3708                                 method_list_seats,
3709                                 SD_BUS_VTABLE_UNPRIVILEGED),
3710         SD_BUS_METHOD_WITH_ARGS("ListInhibitors",
3711                                 SD_BUS_NO_ARGS,
3712                                 SD_BUS_RESULT("a(ssssuu)", inhibitors),
3713                                 method_list_inhibitors,
3714                                 SD_BUS_VTABLE_UNPRIVILEGED),
3715         SD_BUS_METHOD_WITH_ARGS("CreateSession",
3716                                 SD_BUS_ARGS("u", uid,
3717                                             "u", pid,
3718                                             "s", service,
3719                                             "s", type,
3720                                             "s", class,
3721                                             "s", desktop,
3722                                             "s", seat_id,
3723                                             "u", vtnr,
3724                                             "s", tty,
3725                                             "s", display,
3726                                             "b", remote,
3727                                             "s", remote_user,
3728                                             "s", remote_host,
3729                                             "a(sv)", properties),
3730                                 SD_BUS_RESULT("s", session_id,
3731                                               "o", object_path,
3732                                               "s", runtime_path,
3733                                               "h", fifo_fd,
3734                                               "u", uid,
3735                                               "s", seat_id,
3736                                               "u", vtnr,
3737                                               "b", existing),
3738                                 method_create_session,
3739                                 0),
3740         SD_BUS_METHOD_WITH_ARGS("CreateSessionWithPIDFD",
3741                                 SD_BUS_ARGS("u", uid,
3742                                             "h", pidfd,
3743                                             "s", service,
3744                                             "s", type,
3745                                             "s", class,
3746                                             "s", desktop,
3747                                             "s", seat_id,
3748                                             "u", vtnr,
3749                                             "s", tty,
3750                                             "s", display,
3751                                             "b", remote,
3752                                             "s", remote_user,
3753                                             "s", remote_host,
3754                                             "t", flags,
3755                                             "a(sv)", properties),
3756                                 SD_BUS_RESULT("s", session_id,
3757                                               "o", object_path,
3758                                               "s", runtime_path,
3759                                               "h", fifo_fd,
3760                                               "u", uid,
3761                                               "s", seat_id,
3762                                               "u", vtnr,
3763                                               "b", existing),
3764                                 method_create_session_pidfd,
3765                                 0),
3766         SD_BUS_METHOD_WITH_ARGS("ReleaseSession",
3767                                 SD_BUS_ARGS("s", session_id),
3768                                 SD_BUS_NO_RESULT,
3769                                 method_release_session,
3770                                 0),
3771         SD_BUS_METHOD_WITH_ARGS("ActivateSession",
3772                                 SD_BUS_ARGS("s", session_id),
3773                                 SD_BUS_NO_RESULT,
3774                                 method_activate_session,
3775                                 SD_BUS_VTABLE_UNPRIVILEGED),
3776         SD_BUS_METHOD_WITH_ARGS("ActivateSessionOnSeat",
3777                                 SD_BUS_ARGS("s", session_id, "s", seat_id),
3778                                 SD_BUS_NO_RESULT,
3779                                 method_activate_session_on_seat,
3780                                 SD_BUS_VTABLE_UNPRIVILEGED),
3781         SD_BUS_METHOD_WITH_ARGS("LockSession",
3782                                 SD_BUS_ARGS("s", session_id),
3783                                 SD_BUS_NO_RESULT,
3784                                 method_lock_session,
3785                                 SD_BUS_VTABLE_UNPRIVILEGED),
3786         SD_BUS_METHOD_WITH_ARGS("UnlockSession",
3787                                 SD_BUS_ARGS("s", session_id),
3788                                 SD_BUS_NO_RESULT,
3789                                 method_lock_session,
3790                                 SD_BUS_VTABLE_UNPRIVILEGED),
3791         SD_BUS_METHOD("LockSessions",
3792                       NULL,
3793                       NULL,
3794                       method_lock_sessions,
3795                       SD_BUS_VTABLE_UNPRIVILEGED),
3796         SD_BUS_METHOD("UnlockSessions",
3797                       NULL,
3798                       NULL,
3799                       method_lock_sessions,
3800                       SD_BUS_VTABLE_UNPRIVILEGED),
3801         SD_BUS_METHOD_WITH_ARGS("KillSession",
3802                                 SD_BUS_ARGS("s", session_id, "s", who, "i", signal_number),
3803                                 SD_BUS_NO_RESULT,
3804                                 method_kill_session,
3805                                 SD_BUS_VTABLE_UNPRIVILEGED),
3806         SD_BUS_METHOD_WITH_ARGS("KillUser",
3807                                 SD_BUS_ARGS("u", uid, "i", signal_number),
3808                                 SD_BUS_NO_RESULT,
3809                                 method_kill_user,
3810                                 SD_BUS_VTABLE_UNPRIVILEGED),
3811         SD_BUS_METHOD_WITH_ARGS("TerminateSession",
3812                                 SD_BUS_ARGS("s", session_id),
3813                                 SD_BUS_NO_RESULT,
3814                                 method_terminate_session,
3815                                 SD_BUS_VTABLE_UNPRIVILEGED),
3816         SD_BUS_METHOD_WITH_ARGS("TerminateUser",
3817                                 SD_BUS_ARGS("u", uid),
3818                                 SD_BUS_NO_RESULT,
3819                                 method_terminate_user,
3820                                 SD_BUS_VTABLE_UNPRIVILEGED),
3821         SD_BUS_METHOD_WITH_ARGS("TerminateSeat",
3822                                 SD_BUS_ARGS("s", seat_id),
3823                                 SD_BUS_NO_RESULT,
3824                                 method_terminate_seat,
3825                                 SD_BUS_VTABLE_UNPRIVILEGED),
3826         SD_BUS_METHOD_WITH_ARGS("SetUserLinger",
3827                                 SD_BUS_ARGS("u", uid, "b", enable, "b", interactive),
3828                                 SD_BUS_NO_RESULT,
3829                                 method_set_user_linger,
3830                                 SD_BUS_VTABLE_UNPRIVILEGED),
3831         SD_BUS_METHOD_WITH_ARGS("AttachDevice",
3832                                 SD_BUS_ARGS("s", seat_id, "s", sysfs_path, "b", interactive),
3833                                 SD_BUS_NO_RESULT,
3834                                 method_attach_device,
3835                                 SD_BUS_VTABLE_UNPRIVILEGED),
3836         SD_BUS_METHOD_WITH_ARGS("FlushDevices",
3837                                 SD_BUS_ARGS("b", interactive),
3838                                 SD_BUS_NO_RESULT,
3839                                 method_flush_devices,
3840                                 SD_BUS_VTABLE_UNPRIVILEGED),
3841         SD_BUS_METHOD_WITH_ARGS("PowerOff",
3842                                 SD_BUS_ARGS("b", interactive),
3843                                 SD_BUS_NO_RESULT,
3844                                 method_poweroff,
3845                                 SD_BUS_VTABLE_UNPRIVILEGED),
3846         SD_BUS_METHOD_WITH_ARGS("PowerOffWithFlags",
3847                                 SD_BUS_ARGS("t", flags),
3848                                 SD_BUS_NO_RESULT,
3849                                 method_poweroff,
3850                                 SD_BUS_VTABLE_UNPRIVILEGED),
3851         SD_BUS_METHOD_WITH_ARGS("Reboot",
3852                                 SD_BUS_ARGS("b", interactive),
3853                                 SD_BUS_NO_RESULT,
3854                                 method_reboot,
3855                                 SD_BUS_VTABLE_UNPRIVILEGED),
3856         SD_BUS_METHOD_WITH_ARGS("RebootWithFlags",
3857                                 SD_BUS_ARGS("t", flags),
3858                                 SD_BUS_NO_RESULT,
3859                                 method_reboot,
3860                                 SD_BUS_VTABLE_UNPRIVILEGED),
3861         SD_BUS_METHOD_WITH_ARGS("Halt",
3862                                 SD_BUS_ARGS("b", interactive),
3863                                 SD_BUS_NO_RESULT,
3864                                 method_halt,
3865                                 SD_BUS_VTABLE_UNPRIVILEGED),
3866         SD_BUS_METHOD_WITH_ARGS("HaltWithFlags",
3867                                 SD_BUS_ARGS("t", flags),
3868                                 SD_BUS_NO_RESULT,
3869                                 method_halt,
3870                                 SD_BUS_VTABLE_UNPRIVILEGED),
3871         SD_BUS_METHOD_WITH_ARGS("Suspend",
3872                                 SD_BUS_ARGS("b", interactive),
3873                                 SD_BUS_NO_RESULT,
3874                                 method_suspend,
3875                                 SD_BUS_VTABLE_UNPRIVILEGED),
3876         SD_BUS_METHOD_WITH_ARGS("SuspendWithFlags",
3877                                 SD_BUS_ARGS("t", flags),
3878                                 SD_BUS_NO_RESULT,
3879                                 method_suspend,
3880                                 SD_BUS_VTABLE_UNPRIVILEGED),
3881         SD_BUS_METHOD_WITH_ARGS("Hibernate",
3882                                 SD_BUS_ARGS("b", interactive),
3883                                 SD_BUS_NO_RESULT,
3884                                 method_hibernate,
3885                                 SD_BUS_VTABLE_UNPRIVILEGED),
3886         SD_BUS_METHOD_WITH_ARGS("HibernateWithFlags",
3887                                 SD_BUS_ARGS("t", flags),
3888                                 SD_BUS_NO_RESULT,
3889                                 method_hibernate,
3890                                 SD_BUS_VTABLE_UNPRIVILEGED),
3891         SD_BUS_METHOD_WITH_ARGS("HybridSleep",
3892                                 SD_BUS_ARGS("b", interactive),
3893                                 SD_BUS_NO_RESULT,
3894                                 method_hybrid_sleep,
3895                                 SD_BUS_VTABLE_UNPRIVILEGED),
3896         SD_BUS_METHOD_WITH_ARGS("HybridSleepWithFlags",
3897                                 SD_BUS_ARGS("t", flags),
3898                                 SD_BUS_NO_RESULT,
3899                                 method_hybrid_sleep,
3900                                 SD_BUS_VTABLE_UNPRIVILEGED),
3901         SD_BUS_METHOD_WITH_ARGS("SuspendThenHibernate",
3902                                 SD_BUS_ARGS("b", interactive),
3903                                 SD_BUS_NO_RESULT,
3904                                 method_suspend_then_hibernate,
3905                                 SD_BUS_VTABLE_UNPRIVILEGED),
3906         SD_BUS_METHOD_WITH_ARGS("SuspendThenHibernateWithFlags",
3907                                 SD_BUS_ARGS("t", flags),
3908                                 SD_BUS_NO_RESULT,
3909                                 method_suspend_then_hibernate,
3910                                 SD_BUS_VTABLE_UNPRIVILEGED),
3911         SD_BUS_METHOD_WITH_ARGS("Sleep",
3912                                 SD_BUS_ARGS("t", flags),
3913                                 SD_BUS_NO_RESULT,
3914                                 method_sleep,
3915                                 SD_BUS_VTABLE_UNPRIVILEGED),
3916         SD_BUS_METHOD_WITH_ARGS("CanPowerOff",
3917                                 SD_BUS_NO_ARGS,
3918                                 SD_BUS_RESULT("s", result),
3919                                 method_can_poweroff,
3920                                 SD_BUS_VTABLE_UNPRIVILEGED),
3921         SD_BUS_METHOD_WITH_ARGS("CanReboot",
3922                                 SD_BUS_NO_ARGS,
3923                                 SD_BUS_RESULT("s", result),
3924                                 method_can_reboot,
3925                                 SD_BUS_VTABLE_UNPRIVILEGED),
3926         SD_BUS_METHOD_WITH_ARGS("CanHalt",
3927                                 SD_BUS_NO_ARGS,
3928                                 SD_BUS_RESULT("s", result),
3929                                 method_can_halt,
3930                                 SD_BUS_VTABLE_UNPRIVILEGED),
3931         SD_BUS_METHOD_WITH_ARGS("CanSuspend",
3932                                 SD_BUS_NO_ARGS,
3933                                 SD_BUS_RESULT("s", result),
3934                                 method_can_suspend,
3935                                 SD_BUS_VTABLE_UNPRIVILEGED),
3936         SD_BUS_METHOD_WITH_ARGS("CanHibernate",
3937                                 SD_BUS_NO_ARGS,
3938                                 SD_BUS_RESULT("s", result),
3939                                 method_can_hibernate,
3940                                 SD_BUS_VTABLE_UNPRIVILEGED),
3941         SD_BUS_METHOD_WITH_ARGS("CanHybridSleep",
3942                                 SD_BUS_NO_ARGS,
3943                                 SD_BUS_RESULT("s", result),
3944                                 method_can_hybrid_sleep,
3945                                 SD_BUS_VTABLE_UNPRIVILEGED),
3946         SD_BUS_METHOD_WITH_ARGS("CanSuspendThenHibernate",
3947                                 SD_BUS_NO_ARGS,
3948                                 SD_BUS_RESULT("s", result),
3949                                 method_can_suspend_then_hibernate,
3950                                 SD_BUS_VTABLE_UNPRIVILEGED),
3951         SD_BUS_METHOD_WITH_ARGS("CanSleep",
3952                                 SD_BUS_NO_ARGS,
3953                                 SD_BUS_RESULT("s", result),
3954                                 method_can_sleep,
3955                                 SD_BUS_VTABLE_UNPRIVILEGED),
3956         SD_BUS_METHOD_WITH_ARGS("ScheduleShutdown",
3957                                 SD_BUS_ARGS("s", type, "t", usec),
3958                                 SD_BUS_NO_RESULT,
3959                                 method_schedule_shutdown,
3960                                 SD_BUS_VTABLE_UNPRIVILEGED),
3961         SD_BUS_METHOD_WITH_ARGS("CancelScheduledShutdown",
3962                                 SD_BUS_NO_ARGS,
3963                                 SD_BUS_RESULT("b", cancelled),
3964                                 method_cancel_scheduled_shutdown,
3965                                 SD_BUS_VTABLE_UNPRIVILEGED),
3966         SD_BUS_METHOD_WITH_ARGS("Inhibit",
3967                                 SD_BUS_ARGS("s", what, "s", who, "s", why, "s", mode),
3968                                 SD_BUS_RESULT("h", pipe_fd),
3969                                 method_inhibit,
3970                                 SD_BUS_VTABLE_UNPRIVILEGED),
3971         SD_BUS_METHOD_WITH_ARGS("CanRebootParameter",
3972                                 SD_BUS_NO_ARGS,
3973                                 SD_BUS_RESULT("s", result),
3974                                 method_can_reboot_parameter,
3975                                 SD_BUS_VTABLE_UNPRIVILEGED),
3976         SD_BUS_METHOD_WITH_ARGS("SetRebootParameter",
3977                                 SD_BUS_ARGS("s", parameter),
3978                                 SD_BUS_NO_RESULT,
3979                                 method_set_reboot_parameter,
3980                                 SD_BUS_VTABLE_UNPRIVILEGED),
3981         SD_BUS_METHOD_WITH_ARGS("CanRebootToFirmwareSetup",
3982                                 SD_BUS_NO_ARGS,
3983                                 SD_BUS_RESULT("s", result),
3984                                 method_can_reboot_to_firmware_setup,
3985                                 SD_BUS_VTABLE_UNPRIVILEGED),
3986         SD_BUS_METHOD_WITH_ARGS("SetRebootToFirmwareSetup",
3987                                 SD_BUS_ARGS("b", enable),
3988                                 SD_BUS_NO_RESULT,
3989                                 method_set_reboot_to_firmware_setup,
3990                                 SD_BUS_VTABLE_UNPRIVILEGED),
3991         SD_BUS_METHOD_WITH_ARGS("CanRebootToBootLoaderMenu",
3992                                 SD_BUS_NO_ARGS,
3993                                 SD_BUS_RESULT("s", result),
3994                                 method_can_reboot_to_boot_loader_menu,
3995                                 SD_BUS_VTABLE_UNPRIVILEGED),
3996         SD_BUS_METHOD_WITH_ARGS("SetRebootToBootLoaderMenu",
3997                                 SD_BUS_ARGS("t", timeout),
3998                                 SD_BUS_NO_RESULT,
3999                                 method_set_reboot_to_boot_loader_menu,
4000                                 SD_BUS_VTABLE_UNPRIVILEGED),
4001         SD_BUS_METHOD_WITH_ARGS("CanRebootToBootLoaderEntry",
4002                                 SD_BUS_NO_ARGS,
4003                                 SD_BUS_RESULT("s", result),
4004                                 method_can_reboot_to_boot_loader_entry,
4005                                 SD_BUS_VTABLE_UNPRIVILEGED),
4006         SD_BUS_METHOD_WITH_ARGS("SetRebootToBootLoaderEntry",
4007                                 SD_BUS_ARGS("s", boot_loader_entry),
4008                                 SD_BUS_NO_RESULT,
4009                                 method_set_reboot_to_boot_loader_entry,
4010                                 SD_BUS_VTABLE_UNPRIVILEGED),
4011         SD_BUS_METHOD_WITH_ARGS("SetWallMessage",
4012                                 SD_BUS_ARGS("s", wall_message, "b", enable),
4013                                 SD_BUS_NO_RESULT,
4014                                 method_set_wall_message,
4015                                 SD_BUS_VTABLE_UNPRIVILEGED),
4016
4017         SD_BUS_SIGNAL_WITH_ARGS("SessionNew",
4018                                 SD_BUS_ARGS("s", session_id, "o", object_path),
4019                                 0),
4020         SD_BUS_SIGNAL_WITH_ARGS("SessionRemoved",
4021                                 SD_BUS_ARGS("s", session_id, "o", object_path),
4022                                 0),
4023         SD_BUS_SIGNAL_WITH_ARGS("UserNew",
4024                                 SD_BUS_ARGS("u", uid, "o", object_path),
4025                                 0),
4026         SD_BUS_SIGNAL_WITH_ARGS("UserRemoved",
4027                                 SD_BUS_ARGS("u", uid, "o", object_path),
4028                                 0),
4029         SD_BUS_SIGNAL_WITH_ARGS("SeatNew",
4030                                 SD_BUS_ARGS("s", seat_id, "o", object_path),
4031                                 0),
4032         SD_BUS_SIGNAL_WITH_ARGS("SeatRemoved",
4033                                 SD_BUS_ARGS("s", seat_id, "o", object_path),
4034                                 0),
4035         SD_BUS_SIGNAL_WITH_ARGS("PrepareForShutdown",
4036                                 SD_BUS_ARGS("b", start),
4037                                 0),
4038         SD_BUS_SIGNAL_WITH_ARGS("PrepareForShutdownWithMetadata",
4039                                 SD_BUS_ARGS("b", start, "a{sv}", metadata),
4040                                 0),
4041         SD_BUS_SIGNAL_WITH_ARGS("PrepareForSleep",
4042                                 SD_BUS_ARGS("b", start),
4043                                 0),
4044
4045         SD_BUS_VTABLE_END
4046 };
4047
4048 const BusObjectImplementation manager_object = {
4049         "/org/freedesktop/login1",
4050         "org.freedesktop.login1.Manager",
4051         .vtables = BUS_VTABLES(manager_vtable),
4052         .children = BUS_IMPLEMENTATIONS(&seat_object,
4053                                         &session_object,
4054                                         &user_object),
4055 };
4056
4057 static int session_jobs_reply(Session *s, uint32_t jid, const char *unit, const char *result) {
4058         assert(s);
4059         assert(unit);
4060
4061         if (!s->started)
4062                 return 0;
4063
4064         if (result && !streq(result, "done")) {
4065                 _cleanup_(sd_bus_error_free) sd_bus_error e = SD_BUS_ERROR_NULL;
4066
4067                 sd_bus_error_setf(&e, BUS_ERROR_JOB_FAILED,
4068                                   "Job %u for unit '%s' failed with '%s'", jid, unit, result);
4069                 return session_send_create_reply(s, &e);
4070         }
4071
4072         return session_send_create_reply(s, NULL);
4073 }
4074
4075 int match_job_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
4076         const char *path, *result, *unit;
4077         Manager *m = ASSERT_PTR(userdata);
4078         Session *session;
4079         uint32_t id;
4080         User *user;
4081         int r;
4082
4083         assert(message);
4084
4085         r = sd_bus_message_read(message, "uoss", &id, &path, &unit, &result);
4086         if (r < 0) {
4087                 bus_log_parse_error(r);
4088                 return 0;
4089         }
4090
4091         if (m->action_job && streq(m->action_job, path)) {
4092                 assert(m->delayed_action);
4093                 log_info("Operation '%s' finished.", handle_action_to_string(m->delayed_action->handle));
4094
4095                 /* Tell people that they now may take a lock again */
4096                 (void) send_prepare_for(m, m->delayed_action, false);
4097
4098                 m->action_job = mfree(m->action_job);
4099                 m->delayed_action = NULL;
4100                 return 0;
4101         }
4102
4103         session = hashmap_get(m->session_units, unit);
4104         if (session) {
4105                 if (streq_ptr(path, session->scope_job)) {
4106                         session->scope_job = mfree(session->scope_job);
4107                         (void) session_jobs_reply(session, id, unit, result);
4108
4109                         session_save(session);
4110                         user_save(session->user);
4111                 }
4112
4113                 session_add_to_gc_queue(session);
4114         }
4115
4116         user = hashmap_get(m->user_units, unit);
4117         if (user) {
4118                 if (streq_ptr(path, user->service_job)) {
4119                         user->service_job = mfree(user->service_job);
4120
4121                         LIST_FOREACH(sessions_by_user, s, user->sessions)
4122                                 (void) session_jobs_reply(s, id, unit, NULL /* don't propagate user service failures to the client */);
4123
4124                         user_save(user);
4125                 }
4126
4127                 user_add_to_gc_queue(user);
4128         }
4129
4130         return 0;
4131 }
4132
4133 int match_unit_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
4134         const char *path, *unit;
4135         Manager *m = ASSERT_PTR(userdata);
4136         Session *session;
4137         User *user;
4138         int r;
4139
4140         assert(message);
4141
4142         r = sd_bus_message_read(message, "so", &unit, &path);
4143         if (r < 0) {
4144                 bus_log_parse_error(r);
4145                 return 0;
4146         }
4147
4148         session = hashmap_get(m->session_units, unit);
4149         if (session)
4150                 session_add_to_gc_queue(session);
4151
4152         user = hashmap_get(m->user_units, unit);
4153         if (user)
4154                 user_add_to_gc_queue(user);
4155
4156         return 0;
4157 }
4158
4159 int match_properties_changed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
4160         _cleanup_free_ char *unit = NULL;
4161         Manager *m = ASSERT_PTR(userdata);
4162         const char *path;
4163         Session *session;
4164         User *user;
4165         int r;
4166
4167         assert(message);
4168
4169         path = sd_bus_message_get_path(message);
4170         if (!path)
4171                 return 0;
4172
4173         r = unit_name_from_dbus_path(path, &unit);
4174         if (r == -EINVAL) /* not a unit */
4175                 return 0;
4176         if (r < 0) {
4177                 log_oom();
4178                 return 0;
4179         }
4180
4181         session = hashmap_get(m->session_units, unit);
4182         if (session)
4183                 session_add_to_gc_queue(session);
4184
4185         user = hashmap_get(m->user_units, unit);
4186         if (user)
4187                 user_add_to_gc_queue(user);
4188
4189         return 0;
4190 }
4191
4192 int match_reloading(sd_bus_message *message, void *userdata, sd_bus_error *error) {
4193         Manager *m = ASSERT_PTR(userdata);
4194         Session *session;
4195         int b, r;
4196
4197         assert(message);
4198
4199         r = sd_bus_message_read(message, "b", &b);
4200         if (r < 0) {
4201                 bus_log_parse_error(r);
4202                 return 0;
4203         }
4204
4205         if (b)
4206                 return 0;
4207
4208         /* systemd finished reloading, let's recheck all our sessions */
4209         log_debug("System manager has been reloaded, rechecking sessions...");
4210
4211         HASHMAP_FOREACH(session, m->sessions)
4212                 session_add_to_gc_queue(session);
4213
4214         return 0;
4215 }
4216
4217 int manager_send_changed(Manager *manager, const char *property, ...) {
4218         char **l;
4219
4220         assert(manager);
4221
4222         l = strv_from_stdarg_alloca(property);
4223
4224         return sd_bus_emit_properties_changed_strv(
4225                         manager->bus,
4226                         "/org/freedesktop/login1",
4227                         "org.freedesktop.login1.Manager",
4228                         l);
4229 }
4230
4231 static int strdup_job(sd_bus_message *reply, char **job) {
4232         const char *j;
4233         char *copy;
4234         int r;
4235
4236         r = sd_bus_message_read(reply, "o", &j);
4237         if (r < 0)
4238                 return r;
4239
4240         copy = strdup(j);
4241         if (!copy)
4242                 return -ENOMEM;
4243
4244         *job = copy;
4245         return 1;
4246 }
4247
4248 int manager_start_scope(
4249                 Manager *manager,
4250                 const char *scope,
4251                 const PidRef *pidref,
4252                 const char *slice,
4253                 const char *description,
4254                 char **wants,
4255                 char **after,
4256                 const char *requires_mounts_for,
4257                 sd_bus_message *more_properties,
4258                 sd_bus_error *error,
4259                 char **job) {
4260
4261         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
4262         int r;
4263
4264         assert(manager);
4265         assert(scope);
4266         assert(pidref_is_set(pidref));
4267         assert(job);
4268
4269         r = bus_message_new_method_call(manager->bus, &m, bus_systemd_mgr, "StartTransientUnit");
4270         if (r < 0)
4271                 return r;
4272
4273         r = sd_bus_message_append(m, "ss", strempty(scope), "fail");
4274         if (r < 0)
4275                 return r;
4276
4277         r = sd_bus_message_open_container(m, 'a', "(sv)");
4278         if (r < 0)
4279                 return r;
4280
4281         if (!isempty(slice)) {
4282                 r = sd_bus_message_append(m, "(sv)", "Slice", "s", slice);
4283                 if (r < 0)
4284                         return r;
4285         }
4286
4287         if (!isempty(description)) {
4288                 r = sd_bus_message_append(m, "(sv)", "Description", "s", description);
4289                 if (r < 0)
4290                         return r;
4291         }
4292
4293         STRV_FOREACH(i, wants) {
4294                 r = sd_bus_message_append(m, "(sv)", "Wants", "as", 1, *i);
4295                 if (r < 0)
4296                         return r;
4297         }
4298
4299         STRV_FOREACH(i, after) {
4300                 r = sd_bus_message_append(m, "(sv)", "After", "as", 1, *i);
4301                 if (r < 0)
4302                         return r;
4303         }
4304
4305         if (!empty_or_root(requires_mounts_for)) {
4306                 r = sd_bus_message_append(m, "(sv)", "RequiresMountsFor", "as", 1, requires_mounts_for);
4307                 if (r < 0)
4308                         return r;
4309         }
4310
4311         /* Make sure that the session shells are terminated with SIGHUP since bash and friends tend to ignore
4312          * SIGTERM */
4313         r = sd_bus_message_append(m, "(sv)", "SendSIGHUP", "b", true);
4314         if (r < 0)
4315                 return r;
4316
4317         r = bus_append_scope_pidref(m, pidref);
4318         if (r < 0)
4319                 return r;
4320
4321         /* For login session scopes, if a process is OOM killed by the kernel, *don't* terminate the rest of
4322            the scope */
4323         r = sd_bus_message_append(m, "(sv)", "OOMPolicy", "s", "continue");
4324         if (r < 0)
4325                 return r;
4326
4327         /* disable TasksMax= for the session scope, rely on the slice setting for it */
4328         r = sd_bus_message_append(m, "(sv)", "TasksMax", "t", UINT64_MAX);
4329         if (r < 0)
4330                 return bus_log_create_error(r);
4331
4332         if (more_properties) {
4333                 /* If TasksMax also appears here, it will overwrite the default value set above */
4334                 r = sd_bus_message_copy(m, more_properties, true);
4335                 if (r < 0)
4336                         return r;
4337         }
4338
4339         r = sd_bus_message_close_container(m);
4340         if (r < 0)
4341                 return r;
4342
4343         r = sd_bus_message_append(m, "a(sa(sv))", 0);
4344         if (r < 0)
4345                 return r;
4346
4347         r = sd_bus_call(manager->bus, m, 0, error, &reply);
4348         if (r < 0)
4349                 return r;
4350
4351         return strdup_job(reply, job);
4352 }
4353
4354 int manager_start_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) {
4355         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4356         int r;
4357
4358         assert(manager);
4359         assert(unit);
4360         assert(job);
4361
4362         r = bus_call_method(
4363                         manager->bus,
4364                         bus_systemd_mgr,
4365                         "StartUnit",
4366                         error,
4367                         &reply,
4368                         "ss", unit, "replace");
4369         if (r < 0)
4370                 return r;
4371
4372         return strdup_job(reply, job);
4373 }
4374
4375 int manager_stop_unit(Manager *manager, const char *unit, const char *job_mode, sd_bus_error *error, char **ret_job) {
4376         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4377         int r;
4378
4379         assert(manager);
4380         assert(unit);
4381         assert(ret_job);
4382
4383         r = bus_call_method(
4384                         manager->bus,
4385                         bus_systemd_mgr,
4386                         "StopUnit",
4387                         error,
4388                         &reply,
4389                         "ss", unit, job_mode ?: "fail");
4390         if (r < 0) {
4391                 if (sd_bus_error_has_names(error, BUS_ERROR_NO_SUCH_UNIT,
4392                                                   BUS_ERROR_LOAD_FAILED)) {
4393
4394                         *ret_job = NULL;
4395                         sd_bus_error_free(error);
4396                         return 0;
4397                 }
4398
4399                 return r;
4400         }
4401
4402         return strdup_job(reply, ret_job);
4403 }
4404
4405 int manager_abandon_scope(Manager *manager, const char *scope, sd_bus_error *ret_error) {
4406         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4407         _cleanup_free_ char *path = NULL;
4408         int r;
4409
4410         assert(manager);
4411         assert(scope);
4412
4413         path = unit_dbus_path_from_name(scope);
4414         if (!path)
4415                 return -ENOMEM;
4416
4417         r = sd_bus_call_method(
4418                         manager->bus,
4419                         "org.freedesktop.systemd1",
4420                         path,
4421                         "org.freedesktop.systemd1.Scope",
4422                         "Abandon",
4423                         &error,
4424                         NULL,
4425                         NULL);
4426         if (r < 0) {
4427                 if (sd_bus_error_has_names(&error, BUS_ERROR_NO_SUCH_UNIT,
4428                                                    BUS_ERROR_LOAD_FAILED,
4429                                                    BUS_ERROR_SCOPE_NOT_RUNNING))
4430                         return 0;
4431
4432                 sd_bus_error_move(ret_error, &error);
4433                 return r;
4434         }
4435
4436         return 1;
4437 }
4438
4439 int manager_kill_unit(Manager *manager, const char *unit, KillWho who, int signo, sd_bus_error *error) {
4440         assert(manager);
4441         assert(unit);
4442
4443         return bus_call_method(
4444                         manager->bus,
4445                         bus_systemd_mgr,
4446                         "KillUnit",
4447                         error,
4448                         NULL,
4449                         "ssi", unit, who == KILL_LEADER ? "main" : "all", signo);
4450 }
4451
4452 int manager_unit_is_active(Manager *manager, const char *unit, sd_bus_error *ret_error) {
4453         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4454         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4455         _cleanup_free_ char *path = NULL;
4456         const char *state;
4457         int r;
4458
4459         assert(manager);
4460         assert(unit);
4461
4462         path = unit_dbus_path_from_name(unit);
4463         if (!path)
4464                 return -ENOMEM;
4465
4466         r = sd_bus_get_property(
4467                         manager->bus,
4468                         "org.freedesktop.systemd1",
4469                         path,
4470                         "org.freedesktop.systemd1.Unit",
4471                         "ActiveState",
4472                         &error,
4473                         &reply,
4474                         "s");
4475         if (r < 0) {
4476                 /* systemd might have dropped off momentarily, let's
4477                  * not make this an error */
4478                 if (sd_bus_error_has_names(&error, SD_BUS_ERROR_NO_REPLY,
4479                                                    SD_BUS_ERROR_DISCONNECTED))
4480                         return true;
4481
4482                 /* If the unit is already unloaded then it's not
4483                  * active */
4484                 if (sd_bus_error_has_names(&error, BUS_ERROR_NO_SUCH_UNIT,
4485                                                    BUS_ERROR_LOAD_FAILED))
4486                         return false;
4487
4488                 sd_bus_error_move(ret_error, &error);
4489                 return r;
4490         }
4491
4492         r = sd_bus_message_read(reply, "s", &state);
4493         if (r < 0)
4494                 return r;
4495
4496         return !STR_IN_SET(state, "inactive", "failed");
4497 }
4498
4499 int manager_job_is_active(Manager *manager, const char *path, sd_bus_error *ret_error) {
4500         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4501         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4502         int r;
4503
4504         assert(manager);
4505         assert(path);
4506
4507         r = sd_bus_get_property(
4508                         manager->bus,
4509                         "org.freedesktop.systemd1",
4510                         path,
4511                         "org.freedesktop.systemd1.Job",
4512                         "State",
4513                         &error,
4514                         &reply,
4515                         "s");
4516         if (r < 0) {
4517                 if (sd_bus_error_has_names(&error, SD_BUS_ERROR_NO_REPLY,
4518                                                    SD_BUS_ERROR_DISCONNECTED))
4519                         return true;
4520
4521                 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_OBJECT))
4522                         return false;
4523
4524                 sd_bus_error_move(ret_error, &error);
4525                 return r;
4526         }
4527
4528         /* We don't actually care about the state really. The fact
4529          * that we could read the job state is enough for us */
4530
4531         return true;
4532 }