src/login/logind-dbus.c

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2
   3 #include <errno.h>
   4 #include <sys/stat.h>
   5 #include <unistd.h>
   6
   7 #include "sd-device.h"
   8 #include "sd-messages.h"
   9
  10 #include "alloc-util.h"
  11 #include "audit-util.h"
  12 #include "bootspec.h"
  13 #include "bus-common-errors.h"
  14 #include "bus-error.h"
  15 #include "bus-get-properties.h"
  16 #include "bus-locator.h"
  17 #include "bus-polkit.h"
  18 #include "bus-unit-util.h"
  19 #include "bus-util.h"
  20 #include "cgroup-util.h"
  21 #include "device-util.h"
  22 #include "dirent-util.h"
  23 #include "efi-api.h"
  24 #include "efi-loader.h"
  25 #include "efivars.h"
  26 #include "env-file.h"
  27 #include "env-util.h"
  28 #include "escape.h"
  29 #include "event-util.h"
  30 #include "fd-util.h"
  31 #include "fileio-label.h"
  32 #include "fileio.h"
  33 #include "format-util.h"
  34 #include "fs-util.h"
  35 #include "logind-action.h"
  36 #include "logind-dbus.h"
  37 #include "logind-polkit.h"
  38 #include "logind-seat-dbus.h"
  39 #include "logind-session-dbus.h"
  40 #include "logind-user-dbus.h"
  41 #include "logind.h"
  42 #include "missing_capability.h"
  43 #include "mkdir-label.h"
  44 #include "parse-util.h"
  45 #include "path-util.h"
  46 #include "process-util.h"
  47 #include "reboot-util.h"
  48 #include "selinux-util.h"
  49 #include "sleep-config.h"
  50 #include "special.h"
  51 #include "serialize.h"
  52 #include "stdio-util.h"
  53 #include "strv.h"
  54 #include "terminal-util.h"
  55 #include "tmpfile-util.h"
  56 #include "unit-name.h"
  57 #include "user-util.h"
  58 #include "utmp-wtmp.h"
  59 #include "virt.h"
  60 #include "wall.h"
  61
  62 /* As a random fun fact sysvinit had a 252 (256-(strlen(" \r\n")+1))
  63  * character limit for the wall message.
  64  * https://git.savannah.nongnu.org/cgit/sysvinit.git/tree/src/shutdown.c#n72
  65  * There is no real technical need for that but doesn't make sense
  66  * to store arbitrary amounts either. As we are not stingy here, we
  67  * allow 4k.
  68  */
  69 #define WALL_MESSAGE_MAX 4096U
  70
  71 #define SHUTDOWN_SCHEDULE_FILE "/run/systemd/shutdown/scheduled"
  72
  73 static int update_schedule_file(Manager *m);
  74 static void reset_scheduled_shutdown(Manager *m);
  75 static int manager_setup_shutdown_timers(Manager* m);
  76
  77 static int get_sender_session(
  78                 Manager *m,
  79                 sd_bus_message *message,
  80                 bool consult_display,
  81                 sd_bus_error *error,
  82                 Session **ret) {
  83
  84         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
  85         Session *session = NULL;
  86         const char *name;
  87         int r;
  88
  89         /* Acquire the sender's session. This first checks if the sending process is inside a session itself,
  90          * and returns that. If not and 'consult_display' is true, this returns the display session of the
  91          * owning user of the caller. */
  92
  93         r = sd_bus_query_sender_creds(message,
  94                                       SD_BUS_CREDS_SESSION|SD_BUS_CREDS_AUGMENT|
  95                                       (consult_display ? SD_BUS_CREDS_OWNER_UID : 0), &creds);
  96         if (r < 0)
  97                 return r;
  98
  99         r = sd_bus_creds_get_session(creds, &name);
 100         if (r < 0) {
 101                 if (r != -ENXIO)
 102                         return r;
 103
 104                 if (consult_display) {
 105                         uid_t uid;
 106
 107                         r = sd_bus_creds_get_owner_uid(creds, &uid);
 108                         if (r < 0) {
 109                                 if (r != -ENXIO)
 110                                         return r;
 111                         } else {
 112                                 User *user;
 113
 114                                 user = hashmap_get(m->users, UID_TO_PTR(uid));
 115                                 if (user)
 116                                         session = user->display;
 117                         }
 118                 }
 119         } else
 120                 session = hashmap_get(m->sessions, name);
 121
 122         if (!session)
 123                 return sd_bus_error_setf(error, BUS_ERROR_NO_SESSION_FOR_PID,
 124                                          consult_display ?
 125                                          "Caller does not belong to any known session and doesn't own any suitable session." :
 126                                          "Caller does not belong to any known session.");
 127
 128         *ret = session;
 129         return 0;
 130 }
 131
 132 int manager_get_session_from_creds(
 133                 Manager *m,
 134                 sd_bus_message *message,
 135                 const char *name,
 136                 sd_bus_error *error,
 137                 Session **ret) {
 138
 139         Session *session;
 140
 141         assert(m);
 142         assert(ret);
 143
 144         if (SEAT_IS_SELF(name)) /* the caller's own session */
 145                 return get_sender_session(m, message, false, error, ret);
 146         if (SEAT_IS_AUTO(name)) /* The caller's own session if they have one, otherwise their user's display session */
 147                 return get_sender_session(m, message, true, error, ret);
 148
 149         session = hashmap_get(m->sessions, name);
 150         if (!session)
 151                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SESSION, "No session '%s' known", name);
 152
 153         *ret = session;
 154         return 0;
 155 }
 156
 157 static int get_sender_user(Manager *m, sd_bus_message *message, sd_bus_error *error, User **ret) {
 158         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 159         uid_t uid;
 160         User *user;
 161         int r;
 162
 163         /* Note that we get the owner UID of the session, not the actual client UID here! */
 164         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds);
 165         if (r < 0)
 166                 return r;
 167
 168         r = sd_bus_creds_get_owner_uid(creds, &uid);
 169         if (r < 0) {
 170                 if (r != -ENXIO)
 171                         return r;
 172
 173                 user = NULL;
 174         } else
 175                 user = hashmap_get(m->users, UID_TO_PTR(uid));
 176
 177         if (!user)
 178                 return sd_bus_error_setf(error, BUS_ERROR_NO_USER_FOR_PID,
 179                                          "Caller does not belong to any logged in or lingering user");
 180
 181         *ret = user;
 182         return 0;
 183 }
 184
 185 int manager_get_user_from_creds(Manager *m, sd_bus_message *message, uid_t uid, sd_bus_error *error, User **ret) {
 186         User *user;
 187
 188         assert(m);
 189         assert(ret);
 190
 191         if (!uid_is_valid(uid))
 192                 return get_sender_user(m, message, error, ret);
 193
 194         user = hashmap_get(m->users, UID_TO_PTR(uid));
 195         if (!user)
 196                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_USER,
 197                                          "User ID "UID_FMT" is not logged in or lingering", uid);
 198
 199         *ret = user;
 200         return 0;
 201 }
 202
 203 int manager_get_seat_from_creds(
 204                 Manager *m,
 205                 sd_bus_message *message,
 206                 const char *name,
 207                 sd_bus_error *error,
 208                 Seat **ret) {
 209
 210         Seat *seat;
 211         int r;
 212
 213         assert(m);
 214         assert(ret);
 215
 216         if (SEAT_IS_SELF(name) || SEAT_IS_AUTO(name)) {
 217                 Session *session;
 218
 219                 /* Use these special seat names as session names */
 220                 r = manager_get_session_from_creds(m, message, name, error, &session);
 221                 if (r < 0)
 222                         return r;
 223
 224                 seat = session->seat;
 225                 if (!seat)
 226                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "Session '%s' has no seat.", session->id);
 227         } else {
 228                 seat = hashmap_get(m->seats, name);
 229                 if (!seat)
 230                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "No seat '%s' known", name);
 231         }
 232
 233         *ret = seat;
 234         return 0;
 235 }
 236
 237 static int return_test_polkit(
 238                 sd_bus_message *message,
 239                 const char *action,
 240                 const char **details,
 241                 uid_t good_user,
 242                 sd_bus_error *e) {
 243
 244         const char *result;
 245         bool challenge;
 246         int r;
 247
 248         r = bus_test_polkit(message, action, details, good_user, &challenge, e);
 249         if (r < 0)
 250                 return r;
 251
 252         if (r > 0)
 253                 result = "yes";
 254         else if (challenge)
 255                 result = "challenge";
 256         else
 257                 result = "no";
 258
 259         return sd_bus_reply_method_return(message, "s", result);
 260 }
 261
 262 static int property_get_idle_hint(
 263                 sd_bus *bus,
 264                 const char *path,
 265                 const char *interface,
 266                 const char *property,
 267                 sd_bus_message *reply,
 268                 void *userdata,
 269                 sd_bus_error *error) {
 270
 271         Manager *m = ASSERT_PTR(userdata);
 272
 273         assert(bus);
 274         assert(reply);
 275
 276         return sd_bus_message_append(reply, "b", manager_get_idle_hint(m, NULL) > 0);
 277 }
 278
 279 static int property_get_idle_since_hint(
 280                 sd_bus *bus,
 281                 const char *path,
 282                 const char *interface,
 283                 const char *property,
 284                 sd_bus_message *reply,
 285                 void *userdata,
 286                 sd_bus_error *error) {
 287
 288         Manager *m = ASSERT_PTR(userdata);
 289         dual_timestamp t = DUAL_TIMESTAMP_NULL;
 290
 291         assert(bus);
 292         assert(reply);
 293
 294         manager_get_idle_hint(m, &t);
 295
 296         return sd_bus_message_append(reply, "t", streq(property, "IdleSinceHint") ? t.realtime : t.monotonic);
 297 }
 298
 299 static int property_get_inhibited(
 300                 sd_bus *bus,
 301                 const char *path,
 302                 const char *interface,
 303                 const char *property,
 304                 sd_bus_message *reply,
 305                 void *userdata,
 306                 sd_bus_error *error) {
 307
 308         Manager *m = ASSERT_PTR(userdata);
 309         InhibitWhat w;
 310
 311         assert(bus);
 312         assert(reply);
 313
 314         w = manager_inhibit_what(m, streq(property, "BlockInhibited") ? INHIBIT_BLOCK : INHIBIT_DELAY);
 315
 316         return sd_bus_message_append(reply, "s", inhibit_what_to_string(w));
 317 }
 318
 319 static int property_get_preparing(
 320                 sd_bus *bus,
 321                 const char *path,
 322                 const char *interface,
 323                 const char *property,
 324                 sd_bus_message *reply,
 325                 void *userdata,
 326                 sd_bus_error *error) {
 327
 328         Manager *m = ASSERT_PTR(userdata);
 329         bool b = false;
 330
 331         assert(bus);
 332         assert(reply);
 333
 334         if (m->delayed_action) {
 335                 if (streq(property, "PreparingForShutdown"))
 336                         b = m->delayed_action->inhibit_what & INHIBIT_SHUTDOWN;
 337                 else
 338                         b = m->delayed_action->inhibit_what & INHIBIT_SLEEP;
 339         }
 340
 341         return sd_bus_message_append(reply, "b", b);
 342 }
 343
 344 static int property_get_sleep_operations(
 345                 sd_bus *bus,
 346                 const char *path,
 347                 const char *interface,
 348                 const char *property,
 349                 sd_bus_message *reply,
 350                 void *userdata,
 351                 sd_bus_error *error) {
 352
 353         Manager *m = ASSERT_PTR(userdata);
 354         _cleanup_strv_free_ char **actions = NULL;
 355         int r;
 356
 357         assert(bus);
 358         assert(reply);
 359
 360         r = handle_action_get_enabled_sleep_actions(m->handle_action_sleep_mask, &actions);
 361         if (r < 0)
 362                 return r;
 363
 364         return sd_bus_message_append_strv(reply, actions);
 365 }
 366
 367 static int property_get_scheduled_shutdown(
 368                 sd_bus *bus,
 369                 const char *path,
 370                 const char *interface,
 371                 const char *property,
 372                 sd_bus_message *reply,
 373                 void *userdata,
 374                 sd_bus_error *error) {
 375
 376         Manager *m = ASSERT_PTR(userdata);
 377         int r;
 378
 379         assert(bus);
 380         assert(reply);
 381
 382         r = sd_bus_message_open_container(reply, 'r', "st");
 383         if (r < 0)
 384                 return r;
 385
 386         r = sd_bus_message_append(
 387                         reply, "st",
 388                         handle_action_to_string(m->scheduled_shutdown_action),
 389                         m->scheduled_shutdown_timeout);
 390         if (r < 0)
 391                 return r;
 392
 393         return sd_bus_message_close_container(reply);
 394 }
 395
 396 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_handle_action, handle_action, HandleAction);
 397 static BUS_DEFINE_PROPERTY_GET(property_get_docked, "b", Manager, manager_is_docked_or_external_displays);
 398 static BUS_DEFINE_PROPERTY_GET(property_get_lid_closed, "b", Manager, manager_is_lid_closed);
 399 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_on_external_power, "b", manager_is_on_external_power());
 400 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_compat_user_tasks_max, "t", CGROUP_LIMIT_MAX);
 401 static BUS_DEFINE_PROPERTY_GET_REF(property_get_hashmap_size, "t", Hashmap *, (uint64_t) hashmap_size);
 402
 403 static int method_get_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 404         _cleanup_free_ char *p = NULL;
 405         Manager *m = ASSERT_PTR(userdata);
 406         const char *name;
 407         Session *session;
 408         int r;
 409
 410         assert(message);
 411
 412         r = sd_bus_message_read(message, "s", &name);
 413         if (r < 0)
 414                 return r;
 415
 416         r = manager_get_session_from_creds(m, message, name, error, &session);
 417         if (r < 0)
 418                 return r;
 419
 420         p = session_bus_path(session);
 421         if (!p)
 422                 return -ENOMEM;
 423
 424         return sd_bus_reply_method_return(message, "o", p);
 425 }
 426
 427 /* Get login session of a process.  This is not what you are looking for these days,
 428  * as apps may instead belong to a user service unit.  This includes terminal
 429  * emulators and hence command-line apps. */
 430 static int method_get_session_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 431         Manager *m = ASSERT_PTR(userdata);
 432         _cleanup_free_ char *p = NULL;
 433         Session *session = NULL;
 434         pid_t pid;
 435         int r;
 436
 437         assert(message);
 438
 439         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 440
 441         r = sd_bus_message_read(message, "u", &pid);
 442         if (r < 0)
 443                 return r;
 444         if (pid < 0)
 445                 return -EINVAL;
 446
 447         if (pid == 0) {
 448                 r = manager_get_session_from_creds(m, message, NULL, error, &session);
 449                 if (r < 0)
 450                         return r;
 451         } else {
 452                 r = manager_get_session_by_pidref(m, &PIDREF_MAKE_FROM_PID(pid), &session);
 453                 if (r < 0)
 454                         return r;
 455
 456                 if (!session)
 457                         return sd_bus_error_setf(error, BUS_ERROR_NO_SESSION_FOR_PID,
 458                                                  "PID "PID_FMT" does not belong to any known session", pid);
 459         }
 460
 461         p = session_bus_path(session);
 462         if (!p)
 463                 return -ENOMEM;
 464
 465         return sd_bus_reply_method_return(message, "o", p);
 466 }
 467
 468 static int method_get_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 469         _cleanup_free_ char *p = NULL;
 470         Manager *m = ASSERT_PTR(userdata);
 471         uint32_t uid;
 472         User *user;
 473         int r;
 474
 475         assert(message);
 476
 477         r = sd_bus_message_read(message, "u", &uid);
 478         if (r < 0)
 479                 return r;
 480
 481         r = manager_get_user_from_creds(m, message, uid, error, &user);
 482         if (r < 0)
 483                 return r;
 484
 485         p = user_bus_path(user);
 486         if (!p)
 487                 return -ENOMEM;
 488
 489         return sd_bus_reply_method_return(message, "o", p);
 490 }
 491
 492 static int method_get_user_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 493         _cleanup_free_ char *p = NULL;
 494         Manager *m = ASSERT_PTR(userdata);
 495         User *user = NULL;
 496         pid_t pid;
 497         int r;
 498
 499         assert(message);
 500
 501         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 502
 503         r = sd_bus_message_read(message, "u", &pid);
 504         if (r < 0)
 505                 return r;
 506         if (pid < 0)
 507                 return -EINVAL;
 508
 509         if (pid == 0) {
 510                 r = manager_get_user_from_creds(m, message, UID_INVALID, error, &user);
 511                 if (r < 0)
 512                         return r;
 513         } else {
 514                 r = manager_get_user_by_pid(m, pid, &user);
 515                 if (r < 0)
 516                         return r;
 517                 if (!user)
 518                         return sd_bus_error_setf(error, BUS_ERROR_NO_USER_FOR_PID,
 519                                                  "PID "PID_FMT" does not belong to any logged in user or lingering user",
 520                                                  pid);
 521         }
 522
 523         p = user_bus_path(user);
 524         if (!p)
 525                 return -ENOMEM;
 526
 527         return sd_bus_reply_method_return(message, "o", p);
 528 }
 529
 530 static int method_get_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 531         _cleanup_free_ char *p = NULL;
 532         Manager *m = ASSERT_PTR(userdata);
 533         const char *name;
 534         Seat *seat;
 535         int r;
 536
 537         assert(message);
 538
 539         r = sd_bus_message_read(message, "s", &name);
 540         if (r < 0)
 541                 return r;
 542
 543         r = manager_get_seat_from_creds(m, message, name, error, &seat);
 544         if (r < 0)
 545                 return r;
 546
 547         p = seat_bus_path(seat);
 548         if (!p)
 549                 return -ENOMEM;
 550
 551         return sd_bus_reply_method_return(message, "o", p);
 552 }
 553
 554 static int method_list_sessions(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 555         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 556         Manager *m = ASSERT_PTR(userdata);
 557         Session *session;
 558         int r;
 559
 560         assert(message);
 561
 562         r = sd_bus_message_new_method_return(message, &reply);
 563         if (r < 0)
 564                 return r;
 565
 566         r = sd_bus_message_open_container(reply, 'a', "(susso)");
 567         if (r < 0)
 568                 return r;
 569
 570         HASHMAP_FOREACH(session, m->sessions) {
 571                 _cleanup_free_ char *p = NULL;
 572
 573                 p = session_bus_path(session);
 574                 if (!p)
 575                         return -ENOMEM;
 576
 577                 r = sd_bus_message_append(reply, "(susso)",
 578                                           session->id,
 579                                           (uint32_t) session->user->user_record->uid,
 580                                           session->user->user_record->user_name,
 581                                           session->seat ? session->seat->id : "",
 582                                           p);
 583                 if (r < 0)
 584                         return r;
 585         }
 586
 587         r = sd_bus_message_close_container(reply);
 588         if (r < 0)
 589                 return r;
 590
 591         return sd_bus_send(NULL, reply, NULL);
 592 }
 593
 594 static int method_list_users(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 595         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 596         Manager *m = ASSERT_PTR(userdata);
 597         User *user;
 598         int r;
 599
 600         assert(message);
 601
 602         r = sd_bus_message_new_method_return(message, &reply);
 603         if (r < 0)
 604                 return r;
 605
 606         r = sd_bus_message_open_container(reply, 'a', "(uso)");
 607         if (r < 0)
 608                 return r;
 609
 610         HASHMAP_FOREACH(user, m->users) {
 611                 _cleanup_free_ char *p = NULL;
 612
 613                 p = user_bus_path(user);
 614                 if (!p)
 615                         return -ENOMEM;
 616
 617                 r = sd_bus_message_append(reply, "(uso)",
 618                                           (uint32_t) user->user_record->uid,
 619                                           user->user_record->user_name,
 620                                           p);
 621                 if (r < 0)
 622                         return r;
 623         }
 624
 625         r = sd_bus_message_close_container(reply);
 626         if (r < 0)
 627                 return r;
 628
 629         return sd_bus_send(NULL, reply, NULL);
 630 }
 631
 632 static int method_list_seats(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 633         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 634         Manager *m = ASSERT_PTR(userdata);
 635         Seat *seat;
 636         int r;
 637
 638         assert(message);
 639
 640         r = sd_bus_message_new_method_return(message, &reply);
 641         if (r < 0)
 642                 return r;
 643
 644         r = sd_bus_message_open_container(reply, 'a', "(so)");
 645         if (r < 0)
 646                 return r;
 647
 648         HASHMAP_FOREACH(seat, m->seats) {
 649                 _cleanup_free_ char *p = NULL;
 650
 651                 p = seat_bus_path(seat);
 652                 if (!p)
 653                         return -ENOMEM;
 654
 655                 r = sd_bus_message_append(reply, "(so)", seat->id, p);
 656                 if (r < 0)
 657                         return r;
 658         }
 659
 660         r = sd_bus_message_close_container(reply);
 661         if (r < 0)
 662                 return r;
 663
 664         return sd_bus_send(NULL, reply, NULL);
 665 }
 666
 667 static int method_list_inhibitors(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 668         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 669         Manager *m = ASSERT_PTR(userdata);
 670         Inhibitor *inhibitor;
 671         int r;
 672
 673         assert(message);
 674
 675         r = sd_bus_message_new_method_return(message, &reply);
 676         if (r < 0)
 677                 return r;
 678
 679         r = sd_bus_message_open_container(reply, 'a', "(ssssuu)");
 680         if (r < 0)
 681                 return r;
 682
 683         HASHMAP_FOREACH(inhibitor, m->inhibitors) {
 684
 685                 r = sd_bus_message_append(reply, "(ssssuu)",
 686                                           strempty(inhibit_what_to_string(inhibitor->what)),
 687                                           strempty(inhibitor->who),
 688                                           strempty(inhibitor->why),
 689                                           strempty(inhibit_mode_to_string(inhibitor->mode)),
 690                                           (uint32_t) inhibitor->uid,
 691                                           (uint32_t) inhibitor->pid.pid);
 692                 if (r < 0)
 693                         return r;
 694         }
 695
 696         r = sd_bus_message_close_container(reply);
 697         if (r < 0)
 698                 return r;
 699
 700         return sd_bus_send(NULL, reply, NULL);
 701 }
 702
 703 static int create_session(
 704                 sd_bus_message *message,
 705                 void *userdata,
 706                 sd_bus_error *error,
 707                 uid_t uid,
 708                 pid_t pid,
 709                 int pidfd,
 710                 const char *service,
 711                 const char *type,
 712                 const char *class,
 713                 const char *desktop,
 714                 const char *cseat,
 715                 uint32_t vtnr,
 716                 const char *tty,
 717                 const char *display,
 718                 int remote,
 719                 const char *remote_user,
 720                 const char *remote_host,
 721                 uint64_t flags) {
 722
 723         _cleanup_(pidref_done) PidRef leader = PIDREF_NULL;
 724         Manager *m = ASSERT_PTR(userdata);
 725         _cleanup_free_ char *id = NULL;
 726         Session *session = NULL;
 727         uint32_t audit_id = 0;
 728         User *user = NULL;
 729         Seat *seat = NULL;
 730         SessionType t;
 731         SessionClass c;
 732         int r;
 733
 734         assert(message);
 735
 736         if (!uid_is_valid(uid))
 737                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid UID");
 738
 739         if (flags != 0)
 740                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Flags must be zero.");
 741
 742         if (pidfd >= 0) {
 743                 r = pidref_set_pidfd(&leader, pidfd);
 744                 if (r < 0)
 745                         return r;
 746         } else if (pid == 0) {
 747                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 748                 pid_t p;
 749
 750                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 751                 if (r < 0)
 752                         return r;
 753
 754                 r = sd_bus_creds_get_pid(creds, &p);
 755                 if (r < 0)
 756                         return r;
 757
 758                 r = pidref_set_pid(&leader, p);
 759                 if (r < 0)
 760                         return r;
 761         } else {
 762                 assert(pid > 0);
 763
 764                 r = pidref_set_pid(&leader, pid);
 765                 if (r < 0)
 766                         return r;
 767         }
 768
 769         if (leader.pid == 1 || leader.pid == getpid_cached())
 770                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid leader PID");
 771
 772         if (isempty(type))
 773                 t = _SESSION_TYPE_INVALID;
 774         else {
 775                 t = session_type_from_string(type);
 776                 if (t < 0)
 777                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 778                                                  "Invalid session type %s", type);
 779         }
 780
 781         if (isempty(class))
 782                 c = _SESSION_CLASS_INVALID;
 783         else {
 784                 c = session_class_from_string(class);
 785                 if (c < 0)
 786                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 787                                                  "Invalid session class %s", class);
 788         }
 789
 790         if (isempty(desktop))
 791                 desktop = NULL;
 792         else {
 793                 if (!string_is_safe(desktop))
 794                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 795                                                  "Invalid desktop string %s", desktop);
 796         }
 797
 798         if (isempty(cseat))
 799                 seat = NULL;
 800         else {
 801                 seat = hashmap_get(m->seats, cseat);
 802                 if (!seat)
 803                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT,
 804                                                  "No seat '%s' known", cseat);
 805         }
 806
 807         if (tty_is_vc(tty)) {
 808                 int v;
 809
 810                 if (!seat)
 811                         seat = m->seat0;
 812                 else if (seat != m->seat0)
 813                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 814                                                  "TTY %s is virtual console but seat %s is not seat0", tty, seat->id);
 815
 816                 v = vtnr_from_tty(tty);
 817                 if (v <= 0)
 818                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 819                                                  "Cannot determine VT number from virtual console TTY %s", tty);
 820
 821                 if (vtnr == 0)
 822                         vtnr = (uint32_t) v;
 823                 else if (vtnr != (uint32_t) v)
 824                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 825                                                  "Specified TTY and VT number do not match");
 826
 827         } else if (tty_is_console(tty)) {
 828
 829                 if (!seat)
 830                         seat = m->seat0;
 831                 else if (seat != m->seat0)
 832                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 833                                                  "Console TTY specified but seat is not seat0");
 834
 835                 if (vtnr != 0)
 836                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 837                                                  "Console TTY specified but VT number is not 0");
 838         }
 839
 840         if (seat) {
 841                 if (seat_has_vts(seat)) {
 842                         if (vtnr <= 0 || vtnr > 63)
 843                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 844                                                          "VT number out of range");
 845                 } else {
 846                         if (vtnr != 0)
 847                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 848                                                          "Seat has no VTs but VT number not 0");
 849                 }
 850         }
 851
 852         if (t == _SESSION_TYPE_INVALID) {
 853                 if (!isempty(display))
 854                         t = SESSION_X11;
 855                 else if (!isempty(tty))
 856                         t = SESSION_TTY;
 857                 else
 858                         t = SESSION_UNSPECIFIED;
 859         }
 860
 861         if (c == _SESSION_CLASS_INVALID) {
 862                 if (t == SESSION_UNSPECIFIED)
 863                         c = SESSION_BACKGROUND;
 864                 else
 865                         c = SESSION_USER;
 866         }
 867
 868         /* Check if we are already in a logind session, and if so refuse. */
 869         r = manager_get_session_by_pidref(m, &leader, /* ret_session= */ NULL);
 870         if (r < 0)
 871                 return r;
 872         if (r > 0)
 873                 return sd_bus_error_setf(error, BUS_ERROR_SESSION_BUSY,
 874                                          "Already running in a session or user slice");
 875
 876         /* Old gdm and lightdm start the user-session on the same VT as the greeter session. But they destroy
 877          * the greeter session after the user-session and want the user-session to take over the VT. We need
 878          * to support this for backwards-compatibility, so make sure we allow new sessions on a VT that a
 879          * greeter is running on. Furthermore, to allow re-logins, we have to allow a greeter to take over a
 880          * used VT for the exact same reasons. */
 881         if (c != SESSION_GREETER &&
 882             vtnr > 0 &&
 883             vtnr < MALLOC_ELEMENTSOF(m->seat0->positions) &&
 884             m->seat0->positions[vtnr] &&
 885             m->seat0->positions[vtnr]->class != SESSION_GREETER)
 886                 return sd_bus_error_set(error, BUS_ERROR_SESSION_BUSY, "Already occupied by a session");
 887
 888         if (hashmap_size(m->sessions) >= m->sessions_max)
 889                 return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED,
 890                                          "Maximum number of sessions (%" PRIu64 ") reached, refusing further sessions.",
 891                                          m->sessions_max);
 892
 893         (void) audit_session_from_pid(leader.pid, &audit_id);
 894         if (audit_session_is_valid(audit_id)) {
 895                 /* Keep our session IDs and the audit session IDs in sync */
 896
 897                 if (asprintf(&id, "%"PRIu32, audit_id) < 0)
 898                         return -ENOMEM;
 899
 900                 /* Wut? There's already a session by this name and we didn't find it above? Weird, then let's
 901                  * not trust the audit data and let's better register a new ID */
 902                 if (hashmap_contains(m->sessions, id)) {
 903                         log_warning("Existing logind session ID %s used by new audit session, ignoring.", id);
 904                         audit_id = AUDIT_SESSION_INVALID;
 905                         id = mfree(id);
 906                 }
 907         }
 908
 909         if (!id) {
 910                 do {
 911                         id = mfree(id);
 912
 913                         if (asprintf(&id, "c%" PRIu64, ++m->session_counter) < 0)
 914                                 return -ENOMEM;
 915
 916                 } while (hashmap_contains(m->sessions, id));
 917         }
 918
 919         /* The generated names should not clash with 'auto' or 'self' */
 920         assert(!SESSION_IS_SELF(id));
 921         assert(!SESSION_IS_AUTO(id));
 922
 923         /* If we are not watching utmp already, try again */
 924         manager_reconnect_utmp(m);
 925
 926         r = manager_add_user_by_uid(m, uid, &user);
 927         if (r < 0)
 928                 goto fail;
 929
 930         r = manager_add_session(m, id, &session);
 931         if (r < 0)
 932                 goto fail;
 933
 934         session_set_user(session, user);
 935         r = session_set_leader_consume(session, TAKE_PIDREF(leader));
 936         if (r < 0)
 937                 goto fail;
 938
 939         session->original_type = session->type = t;
 940         session->class = c;
 941         session->remote = remote;
 942         session->vtnr = vtnr;
 943
 944         if (!isempty(tty)) {
 945                 session->tty = strdup(tty);
 946                 if (!session->tty) {
 947                         r = -ENOMEM;
 948                         goto fail;
 949                 }
 950
 951                 session->tty_validity = TTY_FROM_PAM;
 952         }
 953
 954         if (!isempty(display)) {
 955                 session->display = strdup(display);
 956                 if (!session->display) {
 957                         r = -ENOMEM;
 958                         goto fail;
 959                 }
 960         }
 961
 962         if (!isempty(remote_user)) {
 963                 session->remote_user = strdup(remote_user);
 964                 if (!session->remote_user) {
 965                         r = -ENOMEM;
 966                         goto fail;
 967                 }
 968         }
 969
 970         if (!isempty(remote_host)) {
 971                 session->remote_host = strdup(remote_host);
 972                 if (!session->remote_host) {
 973                         r = -ENOMEM;
 974                         goto fail;
 975                 }
 976         }
 977
 978         if (!isempty(service)) {
 979                 session->service = strdup(service);
 980                 if (!session->service) {
 981                         r = -ENOMEM;
 982                         goto fail;
 983                 }
 984         }
 985
 986         if (!isempty(desktop)) {
 987                 session->desktop = strdup(desktop);
 988                 if (!session->desktop) {
 989                         r = -ENOMEM;
 990                         goto fail;
 991                 }
 992         }
 993
 994         if (seat) {
 995                 r = seat_attach_session(seat, session);
 996                 if (r < 0)
 997                         goto fail;
 998         }
 999
1000         r = sd_bus_message_enter_container(message, 'a', "(sv)");
1001         if (r < 0)
1002                 goto fail;
1003
1004         r = session_start(session, message, error);
1005         if (r < 0)
1006                 goto fail;
1007
1008         r = sd_bus_message_exit_container(message);
1009         if (r < 0)
1010                 goto fail;
1011
1012         session->create_message = sd_bus_message_ref(message);
1013
1014         /* Now call into session_send_create_reply(), which will reply to this method call for us. Or it
1015          * won't – in case we just spawned a session scope and/or user service manager, and they aren't ready
1016          * yet. We'll call session_create_reply() again once the session scope or the user service manager is
1017          * ready, where the function will check again if a reply is then ready to be sent, and then do so if
1018          * all is complete - or wait again. */
1019         r = session_send_create_reply(session, /* error= */ NULL);
1020         if (r < 0)
1021                 return r;
1022
1023         return 1;
1024
1025 fail:
1026         if (session)
1027                 session_add_to_gc_queue(session);
1028
1029         if (user)
1030                 user_add_to_gc_queue(user);
1031
1032         return r;
1033 }
1034
1035 static int method_create_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1036         const char *service, *type, *class, *cseat, *tty, *display, *remote_user, *remote_host, *desktop;
1037         pid_t leader;
1038         uid_t uid;
1039         int remote;
1040         uint32_t vtnr = 0;
1041         int r;
1042
1043         assert(message);
1044
1045         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
1046         assert_cc(sizeof(uid_t) == sizeof(uint32_t));
1047
1048         r = sd_bus_message_read(message,
1049                                 "uusssssussbss",
1050                                 &uid,
1051                                 &leader,
1052                                 &service,
1053                                 &type,
1054                                 &class,
1055                                 &desktop,
1056                                 &cseat,
1057                                 &vtnr,
1058                                 &tty,
1059                                 &display,
1060                                 &remote,
1061                                 &remote_user,
1062                                 &remote_host);
1063         if (r < 0)
1064                 return r;
1065
1066         return create_session(
1067                         message,
1068                         userdata,
1069                         error,
1070                         uid,
1071                         leader,
1072                         /* pidfd = */ -EBADF,
1073                         service,
1074                         type,
1075                         class,
1076                         desktop,
1077                         cseat,
1078                         vtnr,
1079                         tty,
1080                         display,
1081                         remote,
1082                         remote_user,
1083                         remote_host,
1084                         /* flags = */ 0);
1085 }
1086
1087 static int method_create_session_pidfd(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1088         const char *service, *type, *class, *cseat, *tty, *display, *remote_user, *remote_host, *desktop;
1089         int leaderfd = -EBADF;
1090         uid_t uid;
1091         int remote;
1092         uint32_t vtnr = 0;
1093         uint64_t flags;
1094         int r;
1095
1096         r = sd_bus_message_read(message,
1097                                 "uhsssssussbsst",
1098                                 &uid,
1099                                 &leaderfd,
1100                                 &service,
1101                                 &type,
1102                                 &class,
1103                                 &desktop,
1104                                 &cseat,
1105                                 &vtnr,
1106                                 &tty,
1107                                 &display,
1108                                 &remote,
1109                                 &remote_user,
1110                                 &remote_host,
1111                                 &flags);
1112         if (r < 0)
1113                 return r;
1114
1115         return create_session(
1116                         message,
1117                         userdata,
1118                         error,
1119                         uid,
1120                         /* pid = */ 0,
1121                         leaderfd,
1122                         service,
1123                         type,
1124                         class,
1125                         desktop,
1126                         cseat,
1127                         vtnr,
1128                         tty,
1129                         display,
1130                         remote,
1131                         remote_user,
1132                         remote_host,
1133                         flags);
1134 }
1135
1136 static int method_release_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1137         Manager *m = ASSERT_PTR(userdata);
1138         Session *session;
1139         const char *name;
1140         int r;
1141
1142         assert(message);
1143
1144         r = sd_bus_message_read(message, "s", &name);
1145         if (r < 0)
1146                 return r;
1147
1148         r = manager_get_session_from_creds(m, message, name, error, &session);
1149         if (r < 0)
1150                 return r;
1151
1152         r = session_release(session);
1153         if (r < 0)
1154                 return r;
1155
1156         return sd_bus_reply_method_return(message, NULL);
1157 }
1158
1159 static int method_activate_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1160         Manager *m = ASSERT_PTR(userdata);
1161         Session *session;
1162         const char *name;
1163         int r;
1164
1165         assert(message);
1166
1167         r = sd_bus_message_read(message, "s", &name);
1168         if (r < 0)
1169                 return r;
1170
1171         r = manager_get_session_from_creds(m, message, name, error, &session);
1172         if (r < 0)
1173                 return r;
1174
1175         /* PolicyKit is done by bus_session_method_activate() */
1176
1177         return bus_session_method_activate(message, session, error);
1178 }
1179
1180 static int method_activate_session_on_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1181         const char *session_name, *seat_name;
1182         Manager *m = ASSERT_PTR(userdata);
1183         Session *session;
1184         Seat *seat;
1185         int r;
1186
1187         assert(message);
1188
1189         /* Same as ActivateSession() but refuses to work if the seat doesn't match */
1190
1191         r = sd_bus_message_read(message, "ss", &session_name, &seat_name);
1192         if (r < 0)
1193                 return r;
1194
1195         r = manager_get_session_from_creds(m, message, session_name, error, &session);
1196         if (r < 0)
1197                 return r;
1198
1199         r = manager_get_seat_from_creds(m, message, seat_name, error, &seat);
1200         if (r < 0)
1201                 return r;
1202
1203         if (session->seat != seat)
1204                 return sd_bus_error_setf(error, BUS_ERROR_SESSION_NOT_ON_SEAT,
1205                                          "Session %s not on seat %s", session_name, seat_name);
1206
1207         r = check_polkit_chvt(message, m, error);
1208         if (r < 0)
1209                 return r;
1210         if (r == 0)
1211                 return 1; /* Will call us back */
1212
1213         r = session_activate(session);
1214         if (r < 0)
1215                 return r;
1216
1217         return sd_bus_reply_method_return(message, NULL);
1218 }
1219
1220 static int method_lock_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1221         Manager *m = ASSERT_PTR(userdata);
1222         Session *session;
1223         const char *name;
1224         int r;
1225
1226         assert(message);
1227
1228         r = sd_bus_message_read(message, "s", &name);
1229         if (r < 0)
1230                 return r;
1231
1232         r = manager_get_session_from_creds(m, message, name, error, &session);
1233         if (r < 0)
1234                 return r;
1235
1236         return bus_session_method_lock(message, session, error);
1237 }
1238
1239 static int method_lock_sessions(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1240         Manager *m = ASSERT_PTR(userdata);
1241         int r;
1242
1243         assert(message);
1244
1245         r = bus_verify_polkit_async(
1246                         message,
1247                         "org.freedesktop.login1.lock-sessions",
1248                         /* details= */ NULL,
1249                         &m->polkit_registry,
1250                         error);
1251         if (r < 0)
1252                 return r;
1253         if (r == 0)
1254                 return 1; /* Will call us back */
1255
1256         r = session_send_lock_all(m, streq(sd_bus_message_get_member(message), "LockSessions"));
1257         if (r < 0)
1258                 return r;
1259
1260         return sd_bus_reply_method_return(message, NULL);
1261 }
1262
1263 static int method_kill_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1264         const char *name;
1265         Manager *m = ASSERT_PTR(userdata);
1266         Session *session;
1267         int r;
1268
1269         assert(message);
1270
1271         r = sd_bus_message_read(message, "s", &name);
1272         if (r < 0)
1273                 return r;
1274
1275         r = manager_get_session_from_creds(m, message, name, error, &session);
1276         if (r < 0)
1277                 return r;
1278
1279         return bus_session_method_kill(message, session, error);
1280 }
1281
1282 static int method_kill_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1283         Manager *m = ASSERT_PTR(userdata);
1284         uint32_t uid;
1285         User *user;
1286         int r;
1287
1288         assert(message);
1289
1290         r = sd_bus_message_read(message, "u", &uid);
1291         if (r < 0)
1292                 return r;
1293
1294         r = manager_get_user_from_creds(m, message, uid, error, &user);
1295         if (r < 0)
1296                 return r;
1297
1298         return bus_user_method_kill(message, user, error);
1299 }
1300
1301 static int method_terminate_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1302         Manager *m = ASSERT_PTR(userdata);
1303         const char *name;
1304         Session *session;
1305         int r;
1306
1307         assert(message);
1308
1309         r = sd_bus_message_read(message, "s", &name);
1310         if (r < 0)
1311                 return r;
1312
1313         r = manager_get_session_from_creds(m, message, name, error, &session);
1314         if (r < 0)
1315                 return r;
1316
1317         return bus_session_method_terminate(message, session, error);
1318 }
1319
1320 static int method_terminate_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1321         Manager *m = ASSERT_PTR(userdata);
1322         uint32_t uid;
1323         User *user;
1324         int r;
1325
1326         assert(message);
1327
1328         r = sd_bus_message_read(message, "u", &uid);
1329         if (r < 0)
1330                 return r;
1331
1332         r = manager_get_user_from_creds(m, message, uid, error, &user);
1333         if (r < 0)
1334                 return r;
1335
1336         return bus_user_method_terminate(message, user, error);
1337 }
1338
1339 static int method_terminate_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1340         Manager *m = ASSERT_PTR(userdata);
1341         const char *name;
1342         Seat *seat;
1343         int r;
1344
1345         assert(message);
1346
1347         r = sd_bus_message_read(message, "s", &name);
1348         if (r < 0)
1349                 return r;
1350
1351         r = manager_get_seat_from_creds(m, message, name, error, &seat);
1352         if (r < 0)
1353                 return r;
1354
1355         return bus_seat_method_terminate(message, seat, error);
1356 }
1357
1358 static int method_set_user_linger(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1359         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
1360         _cleanup_free_ char *cc = NULL;
1361         Manager *m = ASSERT_PTR(userdata);
1362         int r, b, interactive;
1363         struct passwd *pw;
1364         const char *path;
1365         uint32_t uid, auth_uid;
1366
1367         assert(message);
1368
1369         r = sd_bus_message_read(message, "ubb", &uid, &b, &interactive);
1370         if (r < 0)
1371                 return r;
1372
1373         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID |
1374                                                SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds);
1375         if (r < 0)
1376                 return r;
1377
1378         if (!uid_is_valid(uid)) {
1379                 /* Note that we get the owner UID of the session or user unit,
1380                  * not the actual client UID here! */
1381                 r = sd_bus_creds_get_owner_uid(creds, &uid);
1382                 if (r < 0)
1383                         return r;
1384         }
1385
1386         /* owner_uid is racy, so for authorization we must use euid */
1387         r = sd_bus_creds_get_euid(creds, &auth_uid);
1388         if (r < 0)
1389                 return r;
1390
1391         errno = 0;
1392         pw = getpwuid(uid);
1393         if (!pw)
1394                 return errno_or_else(ENOENT);
1395
1396         r = bus_verify_polkit_async_full(
1397                         message,
1398                         uid == auth_uid ? "org.freedesktop.login1.set-self-linger" :
1399                                           "org.freedesktop.login1.set-user-linger",
1400                         /* details= */ NULL,
1401                         interactive,
1402                         /* good_user= */ UID_INVALID,
1403                         &m->polkit_registry,
1404                         error);
1405         if (r < 0)
1406                 return r;
1407         if (r == 0)
1408                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1409
1410         (void) mkdir_p_label("/var/lib/systemd", 0755);
1411         r = mkdir_safe_label("/var/lib/systemd/linger", 0755, 0, 0, MKDIR_WARN_MODE);
1412         if (r < 0)
1413                 return r;
1414
1415         cc = cescape(pw->pw_name);
1416         if (!cc)
1417                 return -ENOMEM;
1418
1419         path = strjoina("/var/lib/systemd/linger/", cc);
1420         if (b) {
1421                 User *u;
1422
1423                 r = touch(path);
1424                 if (r < 0)
1425                         return r;
1426
1427                 if (manager_add_user_by_uid(m, uid, &u) >= 0)
1428                         user_start(u);
1429
1430         } else {
1431                 User *u;
1432
1433                 r = unlink(path);
1434                 if (r < 0 && errno != ENOENT)
1435                         return -errno;
1436
1437                 u = hashmap_get(m->users, UID_TO_PTR(uid));
1438                 if (u)
1439                         user_add_to_gc_queue(u);
1440         }
1441
1442         return sd_bus_reply_method_return(message, NULL);
1443 }
1444
1445 static int trigger_device(Manager *m, sd_device *parent) {
1446         _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL;
1447         int r;
1448
1449         assert(m);
1450
1451         r = sd_device_enumerator_new(&e);
1452         if (r < 0)
1453                 return r;
1454
1455         r = sd_device_enumerator_allow_uninitialized(e);
1456         if (r < 0)
1457                 return r;
1458
1459         if (parent) {
1460                 r = sd_device_enumerator_add_match_parent(e, parent);
1461                 if (r < 0)
1462                         return r;
1463         }
1464
1465         FOREACH_DEVICE(e, d) {
1466                 r = sd_device_trigger(d, SD_DEVICE_CHANGE);
1467                 if (r < 0)
1468                         log_device_debug_errno(d, r, "Failed to trigger device, ignoring: %m");
1469         }
1470
1471         return 0;
1472 }
1473
1474 static int attach_device(Manager *m, const char *seat, const char *sysfs, sd_bus_error *error) {
1475         _cleanup_(sd_device_unrefp) sd_device *d = NULL;
1476         _cleanup_free_ char *rule = NULL, *file = NULL;
1477         const char *id_for_seat;
1478         int r;
1479
1480         assert(m);
1481         assert(seat);
1482         assert(sysfs);
1483
1484         r = sd_device_new_from_syspath(&d, sysfs);
1485         if (r < 0)
1486                 return sd_bus_error_set_errnof(error, r, "Failed to open device '%s': %m", sysfs);
1487
1488         if (sd_device_has_current_tag(d, "seat") <= 0)
1489                 return sd_bus_error_set_errnof(error, ENODEV, "Device '%s' lacks 'seat' udev tag.", sysfs);
1490
1491         if (sd_device_get_property_value(d, "ID_FOR_SEAT", &id_for_seat) < 0)
1492                 return sd_bus_error_set_errnof(error, ENODEV, "Device '%s' lacks 'ID_FOR_SEAT' udev property.", sysfs);
1493
1494         if (asprintf(&file, "/etc/udev/rules.d/72-seat-%s.rules", id_for_seat) < 0)
1495                 return -ENOMEM;
1496
1497         if (asprintf(&rule, "TAG==\"seat\", ENV{ID_FOR_SEAT}==\"%s\", ENV{ID_SEAT}=\"%s\"", id_for_seat, seat) < 0)
1498                 return -ENOMEM;
1499
1500         (void) mkdir_p_label("/etc/udev/rules.d", 0755);
1501         r = write_string_file_atomic_label(file, rule);
1502         if (r < 0)
1503                 return r;
1504
1505         return trigger_device(m, d);
1506 }
1507
1508 static int flush_devices(Manager *m) {
1509         _cleanup_closedir_ DIR *d = NULL;
1510
1511         assert(m);
1512
1513         d = opendir("/etc/udev/rules.d");
1514         if (!d) {
1515                 if (errno != ENOENT)
1516                         log_warning_errno(errno, "Failed to open /etc/udev/rules.d: %m");
1517         } else
1518                 FOREACH_DIRENT_ALL(de, d, break) {
1519                         if (!dirent_is_file(de))
1520                                 continue;
1521
1522                         if (!startswith(de->d_name, "72-seat-"))
1523                                 continue;
1524
1525                         if (!endswith(de->d_name, ".rules"))
1526                                 continue;
1527
1528                         if (unlinkat(dirfd(d), de->d_name, 0) < 0)
1529                                 log_warning_errno(errno, "Failed to unlink %s: %m", de->d_name);
1530                 }
1531
1532         return trigger_device(m, NULL);
1533 }
1534
1535 static int method_attach_device(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1536         const char *sysfs, *seat;
1537         Manager *m = ASSERT_PTR(userdata);
1538         int interactive, r;
1539
1540         assert(message);
1541
1542         r = sd_bus_message_read(message, "ssb", &seat, &sysfs, &interactive);
1543         if (r < 0)
1544                 return r;
1545
1546         if (!path_is_normalized(sysfs))
1547                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not normalized", sysfs);
1548         if (!path_startswith(sysfs, "/sys"))
1549                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not in /sys", sysfs);
1550
1551         if (SEAT_IS_SELF(seat) || SEAT_IS_AUTO(seat)) {
1552                 Seat *found;
1553
1554                 r = manager_get_seat_from_creds(m, message, seat, error, &found);
1555                 if (r < 0)
1556                         return r;
1557
1558                 seat = found->id;
1559
1560         } else if (!seat_name_is_valid(seat)) /* Note that a seat does not have to exist yet for this operation to succeed */
1561                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Seat name %s is not valid", seat);
1562
1563         r = bus_verify_polkit_async_full(
1564                         message,
1565                         "org.freedesktop.login1.attach-device",
1566                         /* details= */ NULL,
1567                         interactive,
1568                         /* good_user= */ UID_INVALID,
1569                         &m->polkit_registry,
1570                         error);
1571         if (r < 0)
1572                 return r;
1573         if (r == 0)
1574                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1575
1576         r = attach_device(m, seat, sysfs, error);
1577         if (r < 0)
1578                 return r;
1579
1580         return sd_bus_reply_method_return(message, NULL);
1581 }
1582
1583 static int method_flush_devices(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1584         Manager *m = ASSERT_PTR(userdata);
1585         int interactive, r;
1586
1587         assert(message);
1588
1589         r = sd_bus_message_read(message, "b", &interactive);
1590         if (r < 0)
1591                 return r;
1592
1593         r = bus_verify_polkit_async_full(
1594                         message,
1595                         "org.freedesktop.login1.flush-devices",
1596                         /* details= */ NULL,
1597                         interactive,
1598                         /* good_user= */ UID_INVALID,
1599                         &m->polkit_registry,
1600                         error);
1601         if (r < 0)
1602                 return r;
1603         if (r == 0)
1604                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1605
1606         r = flush_devices(m);
1607         if (r < 0)
1608                 return r;
1609
1610         return sd_bus_reply_method_return(message, NULL);
1611 }
1612
1613 static int have_multiple_sessions(
1614                 Manager *m,
1615                 uid_t uid) {
1616
1617         Session *session;
1618
1619         assert(m);
1620
1621         /* Check for other users' sessions. Greeter sessions do not
1622          * count, and non-login sessions do not count either. */
1623         HASHMAP_FOREACH(session, m->sessions)
1624                 if (session->class == SESSION_USER &&
1625                     session->user->user_record->uid != uid)
1626                         return true;
1627
1628         return false;
1629 }
1630
1631 static int bus_manager_log_shutdown(
1632                 Manager *m,
1633                 const HandleActionData *a) {
1634         assert(m);
1635         assert(a);
1636
1637         const char *message = a->message ?: "System is shutting down";
1638         const char *log_verb = a->log_verb ? strjoina("SHUTDOWN=", a->log_verb) : NULL;
1639
1640         return log_struct(LOG_NOTICE,
1641                           "MESSAGE_ID=%s", a->message_id ?: SD_MESSAGE_SHUTDOWN_STR,
1642                           LOG_MESSAGE("%s%s%s%s.",
1643                                       message,
1644                                       m->wall_message ? " (" : "",
1645                                       strempty(m->wall_message),
1646                                       m->wall_message ? ")" : ""),
1647                           log_verb);
1648 }
1649
1650 static int lid_switch_ignore_handler(sd_event_source *e, uint64_t usec, void *userdata) {
1651         Manager *m = ASSERT_PTR(userdata);
1652
1653         assert(e);
1654
1655         m->lid_switch_ignore_event_source = sd_event_source_unref(m->lid_switch_ignore_event_source);
1656         return 0;
1657 }
1658
1659 int manager_set_lid_switch_ignore(Manager *m, usec_t until) {
1660         int r;
1661
1662         assert(m);
1663
1664         if (until <= now(CLOCK_MONOTONIC))
1665                 return 0;
1666
1667         /* We want to ignore the lid switch for a while after each
1668          * suspend, and after boot-up. Hence let's install a timer for
1669          * this. As long as the event source exists we ignore the lid
1670          * switch. */
1671
1672         if (m->lid_switch_ignore_event_source) {
1673                 usec_t u;
1674
1675                 r = sd_event_source_get_time(m->lid_switch_ignore_event_source, &u);
1676                 if (r < 0)
1677                         return r;
1678
1679                 if (until <= u)
1680                         return 0;
1681
1682                 r = sd_event_source_set_time(m->lid_switch_ignore_event_source, until);
1683         } else
1684                 r = sd_event_add_time(
1685                                 m->event,
1686                                 &m->lid_switch_ignore_event_source,
1687                                 CLOCK_MONOTONIC,
1688                                 until, 0,
1689                                 lid_switch_ignore_handler, m);
1690
1691         return r;
1692 }
1693
1694 static int send_prepare_for(Manager *m, const HandleActionData *a, bool _active) {
1695         int k = 0, r, active = _active;
1696
1697         assert(m);
1698         assert(a);
1699         assert(IN_SET(a->inhibit_what, INHIBIT_SHUTDOWN, INHIBIT_SLEEP));
1700
1701         /* We need to send both old and new signal for backward compatibility. The newer one allows clients
1702          * to know which type of reboot is going to happen, as they might be doing different actions (e.g.:
1703          * on soft-reboot), and it is sent first, so that clients know that if they receive the old one
1704          * first then they don't have to wait for the new one, as it means it's not supported. So, do not
1705          * change the order here, as it is an API. */
1706         if (a->inhibit_what == INHIBIT_SHUTDOWN) {
1707                 k = sd_bus_emit_signal(m->bus,
1708                                        "/org/freedesktop/login1",
1709                                        "org.freedesktop.login1.Manager",
1710                                        "PrepareForShutdownWithMetadata",
1711                                        "ba{sv}",
1712                                        active,
1713                                        1,
1714                                        "type",
1715                                        "s",
1716                                        handle_action_to_string(a->handle));
1717                 if (k < 0)
1718                         log_debug_errno(k, "Failed to emit PrepareForShutdownWithMetadata(): %m");
1719         }
1720
1721         r = sd_bus_emit_signal(m->bus,
1722                                "/org/freedesktop/login1",
1723                                "org.freedesktop.login1.Manager",
1724                                a->inhibit_what == INHIBIT_SHUTDOWN ? "PrepareForShutdown" : "PrepareForSleep",
1725                                "b",
1726                                active);
1727         if (r < 0)
1728                 log_debug_errno(r, "Failed to emit PrepareForShutdown(): %m");
1729
1730         return RET_GATHER(k, r);
1731 }
1732
1733 static int execute_shutdown_or_sleep(
1734                 Manager *m,
1735                 const HandleActionData *a,
1736                 sd_bus_error *error) {
1737
1738         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1739         const char *p;
1740         int r;
1741
1742         assert(m);
1743         assert(a);
1744
1745         if (a->inhibit_what == INHIBIT_SHUTDOWN)
1746                 bus_manager_log_shutdown(m, a);
1747
1748         r = bus_call_method(
1749                         m->bus,
1750                         bus_systemd_mgr,
1751                         "StartUnit",
1752                         error,
1753                         &reply,
1754                         "ss", a->target, "replace-irreversibly");
1755         if (r < 0)
1756                 goto error;
1757
1758         r = sd_bus_message_read(reply, "o", &p);
1759         if (r < 0)
1760                 goto error;
1761
1762         r = free_and_strdup(&m->action_job, p);
1763         if (r < 0)
1764                 goto error;
1765
1766         m->delayed_action = a;
1767
1768         /* Make sure the lid switch is ignored for a while */
1769         manager_set_lid_switch_ignore(m, usec_add(now(CLOCK_MONOTONIC), m->holdoff_timeout_usec));
1770
1771         return 0;
1772
1773 error:
1774         /* Tell people that they now may take a lock again */
1775         (void) send_prepare_for(m, a, false);
1776
1777         return r;
1778 }
1779
1780 int manager_dispatch_delayed(Manager *manager, bool timeout) {
1781         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1782         Inhibitor *offending = NULL;
1783         int r;
1784
1785         assert(manager);
1786
1787         if (!manager->delayed_action || manager->action_job)
1788                 return 0;
1789
1790         if (manager_is_inhibited(manager, manager->delayed_action->inhibit_what, INHIBIT_DELAY, NULL, false, false, 0, &offending)) {
1791                 _cleanup_free_ char *comm = NULL, *u = NULL;
1792
1793                 if (!timeout)
1794                         return 0;
1795
1796                 (void) pidref_get_comm(&offending->pid, &comm);
1797                 u = uid_to_name(offending->uid);
1798
1799                 log_notice("Delay lock is active (UID "UID_FMT"/%s, PID "PID_FMT"/%s) but inhibitor timeout is reached.",
1800                            offending->uid, strna(u),
1801                            offending->pid.pid, strna(comm));
1802         }
1803
1804         /* Actually do the operation */
1805         r = execute_shutdown_or_sleep(manager, manager->delayed_action, &error);
1806         if (r < 0) {
1807                 log_warning("Error during inhibitor-delayed operation (already returned success to client): %s",
1808                             bus_error_message(&error, r));
1809
1810                 manager->delayed_action = NULL;
1811         }
1812
1813         return 1; /* We did some work. */
1814 }
1815
1816 static int manager_inhibit_timeout_handler(
1817                         sd_event_source *s,
1818                         uint64_t usec,
1819                         void *userdata) {
1820
1821         Manager *manager = ASSERT_PTR(userdata);
1822
1823         assert(manager->inhibit_timeout_source == s);
1824
1825         return manager_dispatch_delayed(manager, true);
1826 }
1827
1828 static int delay_shutdown_or_sleep(
1829                 Manager *m,
1830                 const HandleActionData *a) {
1831
1832         int r;
1833
1834         assert(m);
1835         assert(a);
1836
1837         if (m->inhibit_timeout_source) {
1838                 r = sd_event_source_set_time_relative(m->inhibit_timeout_source, m->inhibit_delay_max);
1839                 if (r < 0)
1840                         return log_error_errno(r, "sd_event_source_set_time_relative() failed: %m");
1841
1842                 r = sd_event_source_set_enabled(m->inhibit_timeout_source, SD_EVENT_ONESHOT);
1843                 if (r < 0)
1844                         return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
1845         } else {
1846                 r = sd_event_add_time_relative(
1847                                 m->event,
1848                                 &m->inhibit_timeout_source,
1849                                 CLOCK_MONOTONIC, m->inhibit_delay_max, 0,
1850                                 manager_inhibit_timeout_handler, m);
1851                 if (r < 0)
1852                         return r;
1853         }
1854
1855         m->delayed_action = a;
1856
1857         return 0;
1858 }
1859
1860 int bus_manager_shutdown_or_sleep_now_or_later(
1861                 Manager *m,
1862                 const HandleActionData *a,
1863                 sd_bus_error *error) {
1864
1865         _cleanup_free_ char *load_state = NULL;
1866         bool delayed;
1867         int r;
1868
1869         assert(m);
1870         assert(a);
1871         assert(!m->action_job);
1872
1873         r = unit_load_state(m->bus, a->target, &load_state);
1874         if (r < 0)
1875                 return r;
1876
1877         if (!streq(load_state, "loaded"))
1878                 return log_notice_errno(SYNTHETIC_ERRNO(EACCES),
1879                                         "Unit %s is %s, refusing operation.",
1880                                         a->target, load_state);
1881
1882         /* Tell everybody to prepare for shutdown/sleep */
1883         (void) send_prepare_for(m, a, true);
1884
1885         delayed =
1886                 m->inhibit_delay_max > 0 &&
1887                 manager_is_inhibited(m, a->inhibit_what, INHIBIT_DELAY, NULL, false, false, 0, NULL);
1888
1889         if (delayed)
1890                 /* Shutdown is delayed, keep in mind what we
1891                  * want to do, and start a timeout */
1892                 r = delay_shutdown_or_sleep(m, a);
1893         else
1894                 /* Shutdown is not delayed, execute it
1895                  * immediately */
1896                 r = execute_shutdown_or_sleep(m, a, error);
1897
1898         return r;
1899 }
1900
1901 static int verify_shutdown_creds(
1902                 Manager *m,
1903                 sd_bus_message *message,
1904                 const HandleActionData *a,
1905                 uint64_t flags,
1906                 sd_bus_error *error) {
1907
1908         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
1909         bool multiple_sessions, blocked, interactive;
1910         uid_t uid;
1911         int r;
1912
1913         assert(m);
1914         assert(a);
1915         assert(message);
1916
1917         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
1918         if (r < 0)
1919                 return r;
1920
1921         r = sd_bus_creds_get_euid(creds, &uid);
1922         if (r < 0)
1923                 return r;
1924
1925         r = have_multiple_sessions(m, uid);
1926         if (r < 0)
1927                 return r;
1928
1929         multiple_sessions = r > 0;
1930         blocked = manager_is_inhibited(m, a->inhibit_what, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
1931         interactive = flags & SD_LOGIND_INTERACTIVE;
1932
1933         if (multiple_sessions) {
1934                 r = bus_verify_polkit_async_full(
1935                                 message,
1936                                 a->polkit_action_multiple_sessions,
1937                                 /* details= */ NULL,
1938                                 interactive,
1939                                 /* good_user= */ UID_INVALID,
1940                                 &m->polkit_registry,
1941                                 error);
1942                 if (r < 0)
1943                         return r;
1944                 if (r == 0)
1945                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1946         }
1947
1948         if (blocked) {
1949                 /* We don't check polkit for root here, because you can't be more privileged than root */
1950                 if (uid == 0 && (flags & SD_LOGIND_ROOT_CHECK_INHIBITORS))
1951                         return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED,
1952                                                  "Access denied to root due to active block inhibitor");
1953
1954                 r = bus_verify_polkit_async_full(
1955                                 message,
1956                                 a->polkit_action_ignore_inhibit,
1957                                 /* details= */ NULL,
1958                                 interactive,
1959                                 /* good_user= */ UID_INVALID,
1960                                 &m->polkit_registry,
1961                                 error);
1962                 if (r < 0)
1963                         return r;
1964                 if (r == 0)
1965                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1966         }
1967
1968         if (!multiple_sessions && !blocked) {
1969                 r = bus_verify_polkit_async_full(
1970                                 message,
1971                                 a->polkit_action,
1972                                 /* details= */ NULL,
1973                                 interactive,
1974                                 /* good_user= */ UID_INVALID,
1975                                 &m->polkit_registry,
1976                                 error);
1977                 if (r < 0)
1978                         return r;
1979                 if (r == 0)
1980                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1981         }
1982
1983         return 0;
1984 }
1985
1986 static int setup_wall_message_timer(Manager *m, sd_bus_message* message) {
1987         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
1988         int r;
1989
1990         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
1991         if (r >= 0) {
1992                 const char *tty = NULL;
1993
1994                 (void) sd_bus_creds_get_uid(creds, &m->scheduled_shutdown_uid);
1995                 (void) sd_bus_creds_get_tty(creds, &tty);
1996
1997                 r = free_and_strdup(&m->scheduled_shutdown_tty, tty);
1998                 if (r < 0)
1999                         return log_oom();
2000         }
2001
2002         r = manager_setup_wall_message_timer(m);
2003         if (r < 0)
2004                 return r;
2005
2006         return 0;
2007 }
2008
2009 static int method_do_shutdown_or_sleep(
2010                 Manager *m,
2011                 sd_bus_message *message,
2012                 HandleAction action,
2013                 bool with_flags,
2014                 sd_bus_error *error) {
2015
2016         uint64_t flags;
2017         int r;
2018
2019         assert(m);
2020         assert(message);
2021         assert(HANDLE_ACTION_IS_SHUTDOWN(action) || HANDLE_ACTION_IS_SLEEP(action));
2022
2023         if (with_flags) {
2024                 /* New style method: with flags parameter (and interactive bool in the bus message header) */
2025                 r = sd_bus_message_read(message, "t", &flags);
2026                 if (r < 0)
2027                         return r;
2028                 if ((flags & ~SD_LOGIND_SHUTDOWN_AND_SLEEP_FLAGS_PUBLIC) != 0)
2029                         return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS,
2030                                                 "Invalid flags parameter");
2031
2032                 if (FLAGS_SET(flags, (SD_LOGIND_REBOOT_VIA_KEXEC|SD_LOGIND_SOFT_REBOOT)))
2033                         return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS,
2034                                                 "Both reboot via kexec and soft reboot selected, which is not supported");
2035
2036                 if (action != HANDLE_REBOOT) {
2037                         if (flags & SD_LOGIND_REBOOT_VIA_KEXEC)
2038                                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS,
2039                                                         "Reboot via kexec option is only applicable with reboot operations");
2040                         if ((flags & SD_LOGIND_SOFT_REBOOT) || (flags & SD_LOGIND_SOFT_REBOOT_IF_NEXTROOT_SET_UP))
2041                                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS,
2042                                                         "Soft reboot option is only applicable with reboot operations");
2043                 }
2044         } else {
2045                 /* Old style method: no flags parameter, but interactive bool passed as boolean in
2046                  * payload. Let's convert this argument to the new-style flags parameter for our internal
2047                  * use. */
2048                 int interactive;
2049
2050                 r = sd_bus_message_read(message, "b", &interactive);
2051                 if (r < 0)
2052                         return r;
2053
2054                 flags = interactive ? SD_LOGIND_INTERACTIVE : 0;
2055         }
2056
2057         const HandleActionData *a = NULL;
2058
2059         if ((flags & SD_LOGIND_SOFT_REBOOT) ||
2060             ((flags & SD_LOGIND_SOFT_REBOOT_IF_NEXTROOT_SET_UP) && path_is_os_tree("/run/nextroot") > 0))
2061                 a = handle_action_lookup(HANDLE_SOFT_REBOOT);
2062         else if ((flags & SD_LOGIND_REBOOT_VIA_KEXEC) && kexec_loaded())
2063                 a = handle_action_lookup(HANDLE_KEXEC);
2064
2065         if (action == HANDLE_SLEEP) {
2066                 HandleAction selected;
2067
2068                 selected = handle_action_sleep_select(m->handle_action_sleep_mask);
2069                 if (selected < 0)
2070                         return sd_bus_error_set(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
2071                                                 "None of the configured sleep operations are supported");
2072
2073                 assert_se(a = handle_action_lookup(selected));
2074
2075         } else if (HANDLE_ACTION_IS_SLEEP(action)) {
2076                 SleepSupport support;
2077
2078                 assert_se(a = handle_action_lookup(action));
2079
2080                 assert(a->sleep_operation >= 0);
2081                 assert(a->sleep_operation < _SLEEP_OPERATION_MAX);
2082
2083                 r = sleep_supported_full(a->sleep_operation, &support);
2084                 if (r < 0)
2085                         return r;
2086                 if (r == 0)
2087                         switch (support) {
2088
2089                         case SLEEP_DISABLED:
2090                                 return sd_bus_error_setf(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
2091                                                          "Sleep verb '%s' is disabled by config",
2092                                                          sleep_operation_to_string(a->sleep_operation));
2093
2094                         case SLEEP_NOT_CONFIGURED:
2095                         case SLEEP_STATE_OR_MODE_NOT_SUPPORTED:
2096                         case SLEEP_ALARM_NOT_SUPPORTED:
2097                                 return sd_bus_error_setf(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
2098                                                          "Sleep verb '%s' is not configured or configuration is not supported by kernel",
2099                                                          sleep_operation_to_string(a->sleep_operation));
2100
2101                         case SLEEP_RESUME_NOT_SUPPORTED:
2102                                 return sd_bus_error_set(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
2103                                                         "Not running on EFI and resume= is not set. No available method to resume from hibernation");
2104
2105                         case SLEEP_NOT_ENOUGH_SWAP_SPACE:
2106                                 return sd_bus_error_set(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
2107                                                         "Not enough suitable swap space for hibernation available on compatible block devices and file systems");
2108
2109                         default:
2110                                 assert_not_reached();
2111
2112                         }
2113         } else if (!a)
2114                 assert_se(a = handle_action_lookup(action));
2115
2116         r = verify_shutdown_creds(m, message, a, flags, error);
2117         if (r != 0)
2118                 return r;
2119
2120         /* reset case we're shorting a scheduled shutdown */
2121         m->unlink_nologin = false;
2122         reset_scheduled_shutdown(m);
2123
2124         m->scheduled_shutdown_timeout = 0;
2125         m->scheduled_shutdown_action = action;
2126
2127         (void) setup_wall_message_timer(m, message);
2128
2129         r = bus_manager_shutdown_or_sleep_now_or_later(m, a, error);
2130         if (r < 0)
2131                 return r;
2132
2133         return sd_bus_reply_method_return(message, NULL);
2134 }
2135
2136 static int method_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2137         Manager *m = userdata;
2138
2139         return method_do_shutdown_or_sleep(
2140                         m, message,
2141                         HANDLE_POWEROFF,
2142                         sd_bus_message_is_method_call(message, NULL, "PowerOffWithFlags"),
2143                         error);
2144 }
2145
2146 static int method_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2147         Manager *m = userdata;
2148
2149         return method_do_shutdown_or_sleep(
2150                         m, message,
2151                         HANDLE_REBOOT,
2152                         sd_bus_message_is_method_call(message, NULL, "RebootWithFlags"),
2153                         error);
2154 }
2155
2156 static int method_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2157         Manager *m = userdata;
2158
2159         return method_do_shutdown_or_sleep(
2160                         m, message,
2161                         HANDLE_HALT,
2162                         sd_bus_message_is_method_call(message, NULL, "HaltWithFlags"),
2163                         error);
2164 }
2165
2166 static int method_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2167         Manager *m = userdata;
2168
2169         return method_do_shutdown_or_sleep(
2170                         m, message,
2171                         HANDLE_SUSPEND,
2172                         sd_bus_message_is_method_call(message, NULL, "SuspendWithFlags"),
2173                         error);
2174 }
2175
2176 static int method_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2177         Manager *m = userdata;
2178
2179         return method_do_shutdown_or_sleep(
2180                         m, message,
2181                         HANDLE_HIBERNATE,
2182                         sd_bus_message_is_method_call(message, NULL, "HibernateWithFlags"),
2183                         error);
2184 }
2185
2186 static int method_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2187         Manager *m = userdata;
2188
2189         return method_do_shutdown_or_sleep(
2190                         m, message,
2191                         HANDLE_HYBRID_SLEEP,
2192                         sd_bus_message_is_method_call(message, NULL, "HybridSleepWithFlags"),
2193                         error);
2194 }
2195
2196 static int method_suspend_then_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2197         Manager *m = userdata;
2198
2199         return method_do_shutdown_or_sleep(
2200                         m, message,
2201                         HANDLE_SUSPEND_THEN_HIBERNATE,
2202                         sd_bus_message_is_method_call(message, NULL, "SuspendThenHibernateWithFlags"),
2203                         error);
2204 }
2205
2206 static int method_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2207         Manager *m = userdata;
2208
2209         return method_do_shutdown_or_sleep(
2210                         m, message,
2211                         HANDLE_SLEEP,
2212                         /* with_flags = */ true,
2213                         error);
2214 }
2215
2216 static int nologin_timeout_handler(
2217                         sd_event_source *s,
2218                         uint64_t usec,
2219                         void *userdata) {
2220
2221         Manager *m = userdata;
2222
2223         log_info("Creating /run/nologin, blocking further logins...");
2224
2225         m->unlink_nologin =
2226                 create_shutdown_run_nologin_or_warn() >= 0;
2227
2228         return 0;
2229 }
2230
2231 static usec_t nologin_timeout_usec(usec_t elapse) {
2232         /* Issue /run/nologin five minutes before shutdown */
2233         return LESS_BY(elapse, 5 * USEC_PER_MINUTE);
2234 }
2235
2236 void manager_load_scheduled_shutdown(Manager *m) {
2237         _cleanup_fclose_ FILE *f = NULL;
2238         _cleanup_free_ char *usec = NULL,
2239                *warn_wall = NULL,
2240                *mode = NULL,
2241                *wall_message = NULL,
2242                *uid = NULL,
2243                *tty = NULL;
2244         int r;
2245
2246         assert(m);
2247
2248         r = parse_env_file(f, SHUTDOWN_SCHEDULE_FILE,
2249                         "USEC", &usec,
2250                         "WARN_WALL", &warn_wall,
2251                         "MODE", &mode,
2252                         "WALL_MESSAGE", &wall_message,
2253                         "UID", &uid,
2254                         "TTY", &tty);
2255
2256         /* reset will delete the file */
2257         reset_scheduled_shutdown(m);
2258
2259         if (r == -ENOENT)
2260                 return;
2261         if (r < 0)
2262                 return (void) log_debug_errno(r, "Failed to parse " SHUTDOWN_SCHEDULE_FILE ": %m");
2263
2264         HandleAction handle = handle_action_from_string(mode);
2265         if (handle < 0)
2266                 return (void) log_debug_errno(SYNTHETIC_ERRNO(EINVAL), "Failed to parse scheduled shutdown type: %s", mode);
2267
2268         if (!usec)
2269                 return (void) log_debug_errno(SYNTHETIC_ERRNO(EINVAL), "USEC is required");
2270         if (deserialize_usec(usec, &m->scheduled_shutdown_timeout) < 0)
2271                 return;
2272
2273         /* assign parsed type only after we know usec is also valid */
2274         m->scheduled_shutdown_action = handle;
2275
2276         if (warn_wall) {
2277                 r = parse_boolean(warn_wall);
2278                 if (r < 0)
2279                         log_debug_errno(r, "Failed to parse enabling wall messages");
2280                 else
2281                         m->enable_wall_messages = r;
2282         }
2283
2284         if (wall_message) {
2285                 _cleanup_free_ char *unescaped = NULL;
2286                 r = cunescape(wall_message, 0, &unescaped);
2287                 if (r < 0)
2288                         log_debug_errno(r, "Failed to parse wall message: %s", wall_message);
2289                 else
2290                         free_and_replace(m->wall_message, unescaped);
2291         }
2292
2293         if (uid) {
2294                 r = parse_uid(uid, &m->scheduled_shutdown_uid);
2295                 if (r < 0)
2296                         log_debug_errno(r, "Failed to parse wall uid: %s", uid);
2297         }
2298
2299         free_and_replace(m->scheduled_shutdown_tty, tty);
2300
2301         r = manager_setup_shutdown_timers(m);
2302         if (r < 0)
2303                 return reset_scheduled_shutdown(m);
2304
2305         (void) manager_setup_wall_message_timer(m);
2306         (void) update_schedule_file(m);
2307
2308         return;
2309 }
2310
2311 static int update_schedule_file(Manager *m) {
2312         _cleanup_(unlink_and_freep) char *temp_path = NULL;
2313         _cleanup_fclose_ FILE *f = NULL;
2314         int r;
2315
2316         assert(m);
2317         assert(handle_action_valid(m->scheduled_shutdown_action));
2318
2319         r = mkdir_parents_label(SHUTDOWN_SCHEDULE_FILE, 0755);
2320         if (r < 0)
2321                 return log_error_errno(r, "Failed to create shutdown subdirectory: %m");
2322
2323         r = fopen_temporary(SHUTDOWN_SCHEDULE_FILE, &f, &temp_path);
2324         if (r < 0)
2325                 return log_error_errno(r, "Failed to save information about scheduled shutdowns: %m");
2326
2327         (void) fchmod(fileno(f), 0644);
2328
2329         serialize_usec(f, "USEC", m->scheduled_shutdown_timeout);
2330         serialize_item_format(f, "WARN_WALL", "%s", one_zero(m->enable_wall_messages));
2331         serialize_item_format(f, "MODE", "%s", handle_action_to_string(m->scheduled_shutdown_action));
2332         serialize_item_format(f, "UID", UID_FMT, m->scheduled_shutdown_uid);
2333
2334         if (m->scheduled_shutdown_tty)
2335                 serialize_item_format(f, "TTY", "%s", m->scheduled_shutdown_tty);
2336
2337         if (!isempty(m->wall_message)) {
2338                 r = serialize_item_escaped(f, "WALL_MESSAGE", m->wall_message);
2339                 if (r < 0)
2340                         goto fail;
2341         }
2342
2343         r = fflush_and_check(f);
2344         if (r < 0)
2345                 goto fail;
2346
2347         if (rename(temp_path, SHUTDOWN_SCHEDULE_FILE) < 0) {
2348                 r = -errno;
2349                 goto fail;
2350         }
2351
2352         temp_path = mfree(temp_path);
2353         return 0;
2354
2355 fail:
2356         (void) unlink(SHUTDOWN_SCHEDULE_FILE);
2357
2358         return log_error_errno(r, "Failed to write information about scheduled shutdowns: %m");
2359 }
2360
2361 static void reset_scheduled_shutdown(Manager *m) {
2362         assert(m);
2363
2364         m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2365         m->wall_message_timeout_source = sd_event_source_unref(m->wall_message_timeout_source);
2366         m->nologin_timeout_source = sd_event_source_unref(m->nologin_timeout_source);
2367
2368         m->scheduled_shutdown_action = _HANDLE_ACTION_INVALID;
2369         m->scheduled_shutdown_timeout = USEC_INFINITY;
2370         m->scheduled_shutdown_uid = UID_INVALID;
2371         m->scheduled_shutdown_tty = mfree(m->scheduled_shutdown_tty);
2372         m->shutdown_dry_run = false;
2373
2374         if (m->unlink_nologin) {
2375                 (void) unlink_or_warn("/run/nologin");
2376                 m->unlink_nologin = false;
2377         }
2378
2379         (void) unlink(SHUTDOWN_SCHEDULE_FILE);
2380 }
2381
2382 static int manager_scheduled_shutdown_handler(
2383                         sd_event_source *s,
2384                         uint64_t usec,
2385                         void *userdata) {
2386
2387         Manager *m = ASSERT_PTR(userdata);
2388         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
2389         const HandleActionData *a;
2390         int r;
2391
2392         assert_se(a = handle_action_lookup(m->scheduled_shutdown_action));
2393
2394         /* Don't allow multiple jobs being executed at the same time */
2395         if (m->delayed_action) {
2396                 r = -EALREADY;
2397                 log_error("Scheduled shutdown to %s failed: shutdown or sleep operation already in progress", a->target);
2398                 goto error;
2399         }
2400
2401         if (m->shutdown_dry_run) {
2402                 /* We do not process delay inhibitors here.  Otherwise, we
2403                  * would have to be considered "in progress" (like the check
2404                  * above) for some seconds after our admin has seen the final
2405                  * wall message. */
2406
2407                 bus_manager_log_shutdown(m, a);
2408                 log_info("Running in dry run, suppressing action.");
2409                 reset_scheduled_shutdown(m);
2410
2411                 return 0;
2412         }
2413
2414         r = bus_manager_shutdown_or_sleep_now_or_later(m, a, &error);
2415         if (r < 0) {
2416                 log_error_errno(r, "Scheduled shutdown to %s failed: %m", a->target);
2417                 goto error;
2418         }
2419
2420         return 0;
2421
2422 error:
2423         reset_scheduled_shutdown(m);
2424         return r;
2425 }
2426
2427 static int method_schedule_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2428         Manager *m = ASSERT_PTR(userdata);
2429         HandleAction handle;
2430         const HandleActionData *a;
2431         uint64_t elapse;
2432         char *type;
2433         int r;
2434         bool dry_run = false;
2435
2436         assert(message);
2437
2438         r = sd_bus_message_read(message, "st", &type, &elapse);
2439         if (r < 0)
2440                 return r;
2441
2442         if (startswith(type, "dry-")) {
2443                 type += 4;
2444                 dry_run = true;
2445         }
2446
2447         handle = handle_action_from_string(type);
2448         if (!HANDLE_ACTION_IS_SHUTDOWN(handle))
2449                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unsupported shutdown type: %s", type);
2450
2451         assert_se(a = handle_action_lookup(handle));
2452         assert(a->polkit_action);
2453
2454         r = verify_shutdown_creds(m, message, a, 0, error);
2455         if (r != 0)
2456                 return r;
2457
2458         m->scheduled_shutdown_action = handle;
2459         m->shutdown_dry_run = dry_run;
2460         m->scheduled_shutdown_timeout = elapse;
2461
2462         r = manager_setup_shutdown_timers(m);
2463         if (r < 0)
2464                 return r;
2465
2466         r = setup_wall_message_timer(m, message);
2467         if (r >= 0)
2468                 r = update_schedule_file(m);
2469
2470         if (r < 0) {
2471                 reset_scheduled_shutdown(m);
2472                 return r;
2473         }
2474
2475         return sd_bus_reply_method_return(message, NULL);
2476 }
2477
2478 static int manager_setup_shutdown_timers(Manager* m) {
2479         int r;
2480
2481         r = event_reset_time(m->event, &m->scheduled_shutdown_timeout_source,
2482                              CLOCK_REALTIME,
2483                              m->scheduled_shutdown_timeout, 0,
2484                              manager_scheduled_shutdown_handler, m,
2485                              0, "scheduled-shutdown-timeout", true);
2486         if (r < 0)
2487                 goto fail;
2488
2489         r = event_reset_time(m->event, &m->nologin_timeout_source,
2490                              CLOCK_REALTIME,
2491                              nologin_timeout_usec(m->scheduled_shutdown_timeout), 0,
2492                              nologin_timeout_handler, m,
2493                              0, "nologin-timeout", true);
2494         if (r < 0)
2495                 goto fail;
2496
2497         return 0;
2498
2499 fail:
2500         m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2501         m->nologin_timeout_source = sd_event_source_unref(m->nologin_timeout_source);
2502
2503         return r;
2504 }
2505
2506 static int method_cancel_scheduled_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2507         Manager *m = ASSERT_PTR(userdata);
2508         const HandleActionData *a;
2509         bool cancelled;
2510         int r;
2511
2512         assert(message);
2513
2514         cancelled = handle_action_valid(m->scheduled_shutdown_action) && m->scheduled_shutdown_action != HANDLE_IGNORE;
2515         if (!cancelled)
2516                 return sd_bus_reply_method_return(message, "b", false);
2517
2518         assert_se(a = handle_action_lookup(m->scheduled_shutdown_action));
2519         if (!a->polkit_action)
2520                 return sd_bus_error_set(error, SD_BUS_ERROR_AUTH_FAILED, "Unsupported shutdown type");
2521
2522         r = bus_verify_polkit_async(
2523                         message,
2524                         a->polkit_action,
2525                         /* details= */ NULL,
2526                         &m->polkit_registry,
2527                         error);
2528         if (r < 0)
2529                 return r;
2530         if (r == 0)
2531                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2532
2533         if (m->enable_wall_messages) {
2534                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2535                 const char *tty = NULL;
2536                 uid_t uid = 0;
2537
2538                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
2539                 if (r >= 0) {
2540                         (void) sd_bus_creds_get_uid(creds, &uid);
2541                         (void) sd_bus_creds_get_tty(creds, &tty);
2542                 }
2543
2544                 _cleanup_free_ char *username = uid_to_name(uid);
2545
2546                 log_struct(LOG_INFO,
2547                            LOG_MESSAGE("System shutdown has been cancelled"),
2548                            "ACTION=%s", handle_action_to_string(a->handle),
2549                            "MESSAGE_ID=" SD_MESSAGE_SHUTDOWN_CANCELED_STR,
2550                            username ? "OPERATOR=%s" : NULL, username);
2551
2552                 (void) wall("System shutdown has been cancelled",
2553                             username, tty, logind_wall_tty_filter, m);
2554         }
2555
2556         reset_scheduled_shutdown(m);
2557
2558         return sd_bus_reply_method_return(message, "b", true);
2559 }
2560
2561 static int method_can_shutdown_or_sleep(
2562                 Manager *m,
2563                 sd_bus_message *message,
2564                 HandleAction action,
2565                 sd_bus_error *error) {
2566
2567         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2568         bool multiple_sessions, challenge, blocked;
2569         const HandleActionData *a;
2570         const char *result = NULL;
2571         uid_t uid;
2572         int r;
2573
2574         assert(m);
2575         assert(message);
2576         assert(HANDLE_ACTION_IS_SHUTDOWN(action) || HANDLE_ACTION_IS_SLEEP(action));
2577
2578         if (action == HANDLE_SLEEP) {
2579                 HandleAction selected;
2580
2581                 selected = handle_action_sleep_select(m->handle_action_sleep_mask);
2582                 if (selected < 0)
2583                         return sd_bus_reply_method_return(message, "s", "na");
2584
2585                 assert_se(a = handle_action_lookup(selected));
2586
2587         } else if (HANDLE_ACTION_IS_SLEEP(action)) {
2588                 SleepSupport support;
2589
2590                 assert_se(a = handle_action_lookup(action));
2591
2592                 assert(a->sleep_operation >= 0);
2593                 assert(a->sleep_operation < _SLEEP_OPERATION_MAX);
2594
2595                 r = sleep_supported_full(a->sleep_operation, &support);
2596                 if (r < 0)
2597                         return r;
2598                 if (r == 0)
2599                         return sd_bus_reply_method_return(message, "s", support == SLEEP_DISABLED ? "no" : "na");
2600         } else
2601                 assert_se(a = handle_action_lookup(action));
2602
2603         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
2604         if (r < 0)
2605                 return r;
2606
2607         r = sd_bus_creds_get_euid(creds, &uid);
2608         if (r < 0)
2609                 return r;
2610
2611         r = have_multiple_sessions(m, uid);
2612         if (r < 0)
2613                 return r;
2614
2615         multiple_sessions = r > 0;
2616         blocked = manager_is_inhibited(m, a->inhibit_what, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
2617
2618         if (a->target) {
2619                 _cleanup_free_ char *load_state = NULL;
2620
2621                 r = unit_load_state(m->bus, a->target, &load_state);
2622                 if (r < 0)
2623                         return r;
2624
2625                 if (!streq(load_state, "loaded")) {
2626                         result = "no";
2627                         goto finish;
2628                 }
2629         }
2630
2631         if (multiple_sessions) {
2632                 r = bus_test_polkit(
2633                                 message,
2634                                 a->polkit_action_multiple_sessions,
2635                                 /* details= */ NULL,
2636                                 /* good_user= */ UID_INVALID,
2637                                 &challenge,
2638                                 error);
2639                 if (r < 0)
2640                         return r;
2641
2642                 if (r > 0)
2643                         result = "yes";
2644                 else if (challenge)
2645                         result = "challenge";
2646                 else
2647                         result = "no";
2648         }
2649
2650         if (blocked) {
2651                 r = bus_test_polkit(
2652                                 message,
2653                                 a->polkit_action_ignore_inhibit,
2654                                 /* details= */ NULL,
2655                                 /* good_user= */ UID_INVALID,
2656                                 &challenge,
2657                                 error);
2658                 if (r < 0)
2659                         return r;
2660
2661                 if (r > 0) {
2662                         if (!result)
2663                                 result = "yes";
2664                 } else if (challenge) {
2665                         if (!result || streq(result, "yes"))
2666                                 result = "challenge";
2667                 } else
2668                         result = "no";
2669         }
2670
2671         if (!multiple_sessions && !blocked) {
2672                 /* If neither inhibit nor multiple sessions
2673                  * apply then just check the normal policy */
2674
2675                 r = bus_test_polkit(
2676                                 message,
2677                                 a->polkit_action,
2678                                 /* details= */ NULL,
2679                                 /* good_user= */ UID_INVALID,
2680                                 &challenge,
2681                                 error);
2682                 if (r < 0)
2683                         return r;
2684
2685                 if (r > 0)
2686                         result = "yes";
2687                 else if (challenge)
2688                         result = "challenge";
2689                 else
2690                         result = "no";
2691         }
2692
2693  finish:
2694         return sd_bus_reply_method_return(message, "s", result);
2695 }
2696
2697 static int method_can_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2698         Manager *m = userdata;
2699
2700         return method_can_shutdown_or_sleep(m, message, HANDLE_POWEROFF, error);
2701 }
2702
2703 static int method_can_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2704         Manager *m = userdata;
2705
2706         return method_can_shutdown_or_sleep(m, message, HANDLE_REBOOT, error);
2707 }
2708
2709 static int method_can_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2710         Manager *m = userdata;
2711
2712         return method_can_shutdown_or_sleep(m, message, HANDLE_HALT, error);
2713 }
2714
2715 static int method_can_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2716         Manager *m = userdata;
2717
2718         return method_can_shutdown_or_sleep(m, message, HANDLE_SUSPEND, error);
2719 }
2720
2721 static int method_can_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2722         Manager *m = userdata;
2723
2724         return method_can_shutdown_or_sleep(m, message, HANDLE_HIBERNATE, error);
2725 }
2726
2727 static int method_can_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2728         Manager *m = userdata;
2729
2730         return method_can_shutdown_or_sleep(m, message, HANDLE_HYBRID_SLEEP, error);
2731 }
2732
2733 static int method_can_suspend_then_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2734         Manager *m = userdata;
2735
2736         return method_can_shutdown_or_sleep(m, message, HANDLE_SUSPEND_THEN_HIBERNATE, error);
2737 }
2738
2739 static int method_can_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2740         Manager *m = userdata;
2741
2742         return method_can_shutdown_or_sleep(m, message, HANDLE_SLEEP, error);
2743 }
2744
2745 static int property_get_reboot_parameter(
2746                 sd_bus *bus,
2747                 const char *path,
2748                 const char *interface,
2749                 const char *property,
2750                 sd_bus_message *reply,
2751                 void *userdata,
2752                 sd_bus_error *error) {
2753         _cleanup_free_ char *parameter = NULL;
2754         int r;
2755
2756         assert(bus);
2757         assert(reply);
2758         assert(userdata);
2759
2760         r = read_reboot_parameter(&parameter);
2761         if (r < 0)
2762                 return r;
2763
2764         return sd_bus_message_append(reply, "s", parameter);
2765 }
2766
2767 static int method_set_reboot_parameter(
2768                 sd_bus_message *message,
2769                 void *userdata,
2770                 sd_bus_error *error) {
2771
2772         Manager *m = ASSERT_PTR(userdata);
2773         const char *arg;
2774         int r;
2775
2776         assert(message);
2777
2778         r = sd_bus_message_read(message, "s", &arg);
2779         if (r < 0)
2780                 return r;
2781
2782         r = detect_container();
2783         if (r < 0)
2784                 return r;
2785         if (r > 0)
2786                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED,
2787                                          "Reboot parameter not supported in containers, refusing.");
2788
2789         r = bus_verify_polkit_async(
2790                         message,
2791                         "org.freedesktop.login1.set-reboot-parameter",
2792                         /* details= */ NULL,
2793                         &m->polkit_registry,
2794                         error);
2795         if (r < 0)
2796                 return r;
2797         if (r == 0)
2798                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2799
2800         r = update_reboot_parameter_and_warn(arg, false);
2801         if (r < 0)
2802                 return r;
2803
2804         return sd_bus_reply_method_return(message, NULL);
2805 }
2806
2807 static int method_can_reboot_parameter(
2808                 sd_bus_message *message,
2809                 void *userdata,
2810                 sd_bus_error *error) {
2811
2812         _unused_ Manager *m = ASSERT_PTR(userdata);
2813         int r;
2814
2815         assert(message);
2816
2817         r = detect_container();
2818         if (r < 0)
2819                 return r;
2820         if (r > 0) /* Inside containers, specifying a reboot parameter, doesn't make much sense */
2821                 return sd_bus_reply_method_return(message, "s", "na");
2822
2823         return return_test_polkit(
2824                         message,
2825                         "org.freedesktop.login1.set-reboot-parameter",
2826                         /* details= */ NULL,
2827                         /* good_user= */ UID_INVALID,
2828                         error);
2829 }
2830
2831 static int property_get_reboot_to_firmware_setup(
2832                 sd_bus *bus,
2833                 const char *path,
2834                 const char *interface,
2835                 const char *property,
2836                 sd_bus_message *reply,
2837                 void *userdata,
2838                 sd_bus_error *error) {
2839         int r;
2840
2841         assert(bus);
2842         assert(reply);
2843         assert(userdata);
2844
2845         r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
2846         if (r == -ENXIO) {
2847                 /* EFI case: let's see what is currently configured in the EFI variables */
2848                 r = efi_get_reboot_to_firmware();
2849                 if (r < 0 && r != -EOPNOTSUPP)
2850                         log_warning_errno(r, "Failed to determine reboot-to-firmware-setup state: %m");
2851         } else if (r < 0)
2852                 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
2853         else if (r > 0) {
2854                 /* Non-EFI case: let's see whether /run/systemd/reboot-to-firmware-setup exists. */
2855                 if (access("/run/systemd/reboot-to-firmware-setup", F_OK) < 0) {
2856                         if (errno != ENOENT)
2857                                 log_warning_errno(errno, "Failed to check whether /run/systemd/reboot-to-firmware-setup exists: %m");
2858
2859                         r = false;
2860                 } else
2861                         r = true;
2862         }
2863
2864         return sd_bus_message_append(reply, "b", r > 0);
2865 }
2866
2867 static int method_set_reboot_to_firmware_setup(
2868                 sd_bus_message *message,
2869                 void *userdata,
2870                 sd_bus_error *error) {
2871
2872         Manager *m = ASSERT_PTR(userdata);
2873         bool use_efi;
2874         int b, r;
2875
2876         assert(message);
2877
2878         r = sd_bus_message_read(message, "b", &b);
2879         if (r < 0)
2880                 return r;
2881
2882         r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
2883         if (r == -ENXIO) {
2884                 /* EFI case: let's see what the firmware supports */
2885
2886                 r = efi_reboot_to_firmware_supported();
2887                 if (r == -EOPNOTSUPP)
2888                         return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Firmware does not support boot into firmware.");
2889                 if (r < 0)
2890                         return r;
2891
2892                 use_efi = true;
2893
2894         } else if (r <= 0) {
2895                 /* non-EFI case: $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP is set to off */
2896
2897                 if (r < 0)
2898                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
2899
2900                 return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Firmware does not support boot into firmware.");
2901         } else
2902                 /* non-EFI case: $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP is set to on */
2903                 use_efi = false;
2904
2905         r = bus_verify_polkit_async(
2906                         message,
2907                         "org.freedesktop.login1.set-reboot-to-firmware-setup",
2908                         /* details= */ NULL,
2909                         &m->polkit_registry,
2910                         error);
2911         if (r < 0)
2912                 return r;
2913         if (r == 0)
2914                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2915
2916         if (use_efi) {
2917                 r = efi_set_reboot_to_firmware(b);
2918                 if (r < 0)
2919                         return r;
2920         } else {
2921                 if (b) {
2922                         r = touch("/run/systemd/reboot-to-firmware-setup");
2923                         if (r < 0)
2924                                 return r;
2925                 } else {
2926                         if (unlink("/run/systemd/reboot-to-firmware-setup") < 0 && errno != ENOENT)
2927                                 return -errno;
2928                 }
2929         }
2930
2931         return sd_bus_reply_method_return(message, NULL);
2932 }
2933
2934 static int method_can_reboot_to_firmware_setup(
2935                 sd_bus_message *message,
2936                 void *userdata,
2937                 sd_bus_error *error) {
2938
2939         _unused_ Manager *m = ASSERT_PTR(userdata);
2940         int r;
2941
2942         assert(message);
2943
2944         r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
2945         if (r == -ENXIO) {
2946                 /* EFI case: let's see what the firmware supports */
2947
2948                 r = efi_reboot_to_firmware_supported();
2949                 if (r < 0) {
2950                         if (r != -EOPNOTSUPP)
2951                                 log_warning_errno(r, "Failed to determine whether reboot to firmware is supported: %m");
2952
2953                         return sd_bus_reply_method_return(message, "s", "na");
2954                 }
2955
2956         } else if (r <= 0) {
2957                 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP */
2958
2959                 if (r < 0)
2960                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
2961
2962                 return sd_bus_reply_method_return(message, "s", "na");
2963         }
2964
2965         return return_test_polkit(
2966                         message,
2967                         "org.freedesktop.login1.set-reboot-to-firmware-setup",
2968                         /* details= */ NULL,
2969                         /* good_user= */ UID_INVALID,
2970                         error);
2971 }
2972
2973 static int property_get_reboot_to_boot_loader_menu(
2974                 sd_bus *bus,
2975                 const char *path,
2976                 const char *interface,
2977                 const char *property,
2978                 sd_bus_message *reply,
2979                 void *userdata,
2980                 sd_bus_error *error) {
2981
2982         uint64_t x = UINT64_MAX;
2983         int r;
2984
2985         assert(bus);
2986         assert(reply);
2987         assert(userdata);
2988
2989         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
2990         if (r == -ENXIO) {
2991                 /* EFI case: returns the current value of LoaderConfigTimeoutOneShot. Three cases are distinguished:
2992                  *
2993                  *     1. Variable not set, boot into boot loader menu is not enabled (we return UINT64_MAX to the user)
2994                  *     2. Variable set to "0", boot into boot loader menu is enabled with no timeout (we return 0 to the user)
2995                  *     3. Variable set to numeric value formatted in ASCII, boot into boot loader menu with the specified timeout in seconds
2996                  */
2997
2998                 r = efi_loader_get_config_timeout_one_shot(&x);
2999                 if (r < 0) {
3000                         if (r != -ENOENT)
3001                                 log_warning_errno(r, "Failed to read LoaderConfigTimeoutOneShot variable, ignoring: %m");
3002                 }
3003
3004         } else if (r < 0)
3005                 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
3006         else if (r > 0) {
3007                 _cleanup_free_ char *v = NULL;
3008
3009                 /* Non-EFI case, let's process /run/systemd/reboot-to-boot-loader-menu. */
3010
3011                 r = read_one_line_file("/run/systemd/reboot-to-boot-loader-menu", &v);
3012                 if (r < 0) {
3013                         if (r != -ENOENT)
3014                                 log_warning_errno(r, "Failed to read /run/systemd/reboot-to-boot-loader-menu: %m");
3015                 } else {
3016                         r = safe_atou64(v, &x);
3017                         if (r < 0)
3018                                 log_warning_errno(r, "Failed to parse /run/systemd/reboot-to-boot-loader-menu: %m");
3019                 }
3020         }
3021
3022         return sd_bus_message_append(reply, "t", x);
3023 }
3024
3025 static int method_set_reboot_to_boot_loader_menu(
3026                 sd_bus_message *message,
3027                 void *userdata,
3028                 sd_bus_error *error) {
3029
3030         Manager *m = ASSERT_PTR(userdata);
3031         bool use_efi;
3032         uint64_t x;
3033         int r;
3034
3035         assert(message);
3036
3037         r = sd_bus_message_read(message, "t", &x);
3038         if (r < 0)
3039                 return r;
3040
3041         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
3042         if (r == -ENXIO) {
3043                 uint64_t features;
3044
3045                 /* EFI case: let's see if booting into boot loader menu is supported. */
3046
3047                 r = efi_loader_get_features(&features);
3048                 if (r < 0)
3049                         log_warning_errno(r, "Failed to determine whether reboot to boot loader menu is supported: %m");
3050                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT))
3051                         return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader does not support boot into boot loader menu.");
3052
3053                 use_efi = true;
3054
3055         } else if (r <= 0) {
3056                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU is set to off */
3057
3058                 if (r < 0)
3059                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
3060
3061                 return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader does not support boot into boot loader menu.");
3062         } else
3063                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU is set to on */
3064                 use_efi = false;
3065
3066         r = bus_verify_polkit_async(
3067                         message,
3068                         "org.freedesktop.login1.set-reboot-to-boot-loader-menu",
3069                         /* details= */ NULL,
3070                         &m->polkit_registry,
3071                         error);
3072         if (r < 0)
3073                 return r;
3074         if (r == 0)
3075                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
3076
3077         if (use_efi) {
3078                 if (x == UINT64_MAX)
3079                         r = efi_set_variable(EFI_LOADER_VARIABLE(LoaderConfigTimeoutOneShot), NULL, 0);
3080                 else {
3081                         char buf[DECIMAL_STR_MAX(uint64_t) + 1];
3082                         xsprintf(buf, "%" PRIu64, DIV_ROUND_UP(x, USEC_PER_SEC)); /* second granularity */
3083
3084                         r = efi_set_variable_string(EFI_LOADER_VARIABLE(LoaderConfigTimeoutOneShot), buf);
3085                 }
3086                 if (r < 0)
3087                         return r;
3088         } else {
3089                 if (x == UINT64_MAX) {
3090                         if (unlink("/run/systemd/reboot-to-boot-loader-menu") < 0 && errno != ENOENT)
3091                                 return -errno;
3092                 } else {
3093                         char buf[DECIMAL_STR_MAX(uint64_t) + 1];
3094
3095                         xsprintf(buf, "%" PRIu64, x); /* μs granularity */
3096
3097                         r = write_string_file_atomic_label("/run/systemd/reboot-to-boot-loader-menu", buf);
3098                         if (r < 0)
3099                                 return r;
3100                 }
3101         }
3102
3103         return sd_bus_reply_method_return(message, NULL);
3104 }
3105
3106 static int method_can_reboot_to_boot_loader_menu(
3107                 sd_bus_message *message,
3108                 void *userdata,
3109                 sd_bus_error *error) {
3110
3111         _unused_ Manager *m = ASSERT_PTR(userdata);
3112         int r;
3113
3114         assert(message);
3115
3116         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
3117         if (r == -ENXIO) {
3118                 uint64_t features = 0;
3119
3120                 /* EFI case, let's see if booting into boot loader menu is supported. */
3121
3122                 r = efi_loader_get_features(&features);
3123                 if (r < 0)
3124                         log_warning_errno(r, "Failed to determine whether reboot to boot loader menu is supported: %m");
3125                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT))
3126                         return sd_bus_reply_method_return(message, "s", "na");
3127
3128         } else if (r <= 0) {
3129                 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU */
3130
3131                 if (r < 0)
3132                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
3133
3134                 return sd_bus_reply_method_return(message, "s", "na");
3135         }
3136
3137         return return_test_polkit(
3138                         message,
3139                         "org.freedesktop.login1.set-reboot-to-boot-loader-menu",
3140                         /* details= */ NULL,
3141                         /* good_user= */ UID_INVALID,
3142                         error);
3143 }
3144
3145 static int property_get_reboot_to_boot_loader_entry(
3146                 sd_bus *bus,
3147                 const char *path,
3148                 const char *interface,
3149                 const char *property,
3150                 sd_bus_message *reply,
3151                 void *userdata,
3152                 sd_bus_error *error) {
3153
3154         _cleanup_free_ char *v = NULL;
3155         Manager *m = ASSERT_PTR(userdata);
3156         const char *x = NULL;
3157         int r;
3158
3159         assert(bus);
3160         assert(reply);
3161
3162         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
3163         if (r == -ENXIO) {
3164                 /* EFI case: let's read the LoaderEntryOneShot variable */
3165
3166                 r = efi_loader_update_entry_one_shot_cache(&m->efi_loader_entry_one_shot, &m->efi_loader_entry_one_shot_stat);
3167                 if (r < 0) {
3168                         if (r != -ENOENT)
3169                                 log_warning_errno(r, "Failed to read LoaderEntryOneShot variable, ignoring: %m");
3170                 } else
3171                         x = m->efi_loader_entry_one_shot;
3172
3173         } else if (r < 0)
3174                 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
3175         else if (r > 0) {
3176
3177                 /* Non-EFI case, let's process /run/systemd/reboot-to-boot-loader-entry. */
3178
3179                 r = read_one_line_file("/run/systemd/reboot-to-boot-loader-entry", &v);
3180                 if (r < 0) {
3181                         if (r != -ENOENT)
3182                                 log_warning_errno(r, "Failed to read /run/systemd/reboot-to-boot-loader-entry, ignoring: %m");
3183                 } else if (!efi_loader_entry_name_valid(v))
3184                         log_warning("/run/systemd/reboot-to-boot-loader-entry is not valid, ignoring.");
3185                 else
3186                         x = v;
3187         }
3188
3189         return sd_bus_message_append(reply, "s", x);
3190 }
3191
3192 static int boot_loader_entry_exists(Manager *m, const char *id) {
3193         _cleanup_(boot_config_free) BootConfig config = BOOT_CONFIG_NULL;
3194         int r;
3195
3196         assert(m);
3197         assert(id);
3198
3199         r = boot_config_load_auto(&config, NULL, NULL);
3200         if (r < 0 && r != -ENOKEY) /* don't complain if no GPT is found, hence skip ENOKEY */
3201                 return r;
3202
3203         r = manager_read_efi_boot_loader_entries(m);
3204         if (r >= 0)
3205                 (void) boot_config_augment_from_loader(&config, m->efi_boot_loader_entries, /* auto_only= */ true);
3206
3207         return !!boot_config_find_entry(&config, id);
3208 }
3209
3210 static int method_set_reboot_to_boot_loader_entry(
3211                 sd_bus_message *message,
3212                 void *userdata,
3213                 sd_bus_error *error) {
3214
3215         Manager *m = ASSERT_PTR(userdata);
3216         bool use_efi;
3217         const char *v;
3218         int r;
3219
3220         assert(message);
3221
3222         r = sd_bus_message_read(message, "s", &v);
3223         if (r < 0)
3224                 return r;
3225
3226         if (isempty(v))
3227                 v = NULL;
3228         else if (efi_loader_entry_name_valid(v)) {
3229                 r = boot_loader_entry_exists(m, v);
3230                 if (r < 0)
3231                         return r;
3232                 if (r == 0)
3233                         return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader entry '%s' is not known.", v);
3234         } else
3235                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Boot loader entry name '%s' is not valid, refusing.", v);
3236
3237         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
3238         if (r == -ENXIO) {
3239                 uint64_t features;
3240
3241                 /* EFI case: let's see if booting into boot loader entry is supported. */
3242
3243                 r = efi_loader_get_features(&features);
3244                 if (r < 0)
3245                         log_warning_errno(r, "Failed to determine whether reboot into boot loader entry is supported: %m");
3246                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_ENTRY_ONESHOT))
3247                         return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Loader does not support boot into boot loader entry.");
3248
3249                 use_efi = true;
3250
3251         } else if (r <= 0) {
3252                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY is set to off */
3253
3254                 if (r < 0)
3255                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
3256
3257                 return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Loader does not support boot into boot loader entry.");
3258         } else
3259                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY is set to on */
3260                 use_efi = false;
3261
3262         r = bus_verify_polkit_async(
3263                         message,
3264                         "org.freedesktop.login1.set-reboot-to-boot-loader-entry",
3265                         /* details= */ NULL,
3266                         &m->polkit_registry,
3267                         error);
3268         if (r < 0)
3269                 return r;
3270         if (r == 0)
3271                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
3272
3273         if (use_efi) {
3274                 if (isempty(v))
3275                         /* Delete item */
3276                         r = efi_set_variable(EFI_LOADER_VARIABLE(LoaderEntryOneShot), NULL, 0);
3277                 else
3278                         r = efi_set_variable_string(EFI_LOADER_VARIABLE(LoaderEntryOneShot), v);
3279                 if (r < 0)
3280                         return r;
3281         } else {
3282                 if (isempty(v)) {
3283                         if (unlink("/run/systemd/reboot-to-boot-loader-entry") < 0 && errno != ENOENT)
3284                                 return -errno;
3285                 } else {
3286                         r = write_string_file_atomic_label("/run/systemd/reboot-boot-to-loader-entry", v);
3287                         if (r < 0)
3288                                 return r;
3289                 }
3290         }
3291
3292         return sd_bus_reply_method_return(message, NULL);
3293 }
3294
3295 static int method_can_reboot_to_boot_loader_entry(
3296                 sd_bus_message *message,
3297                 void *userdata,
3298                 sd_bus_error *error) {
3299
3300         _unused_ Manager *m = ASSERT_PTR(userdata);
3301         int r;
3302
3303         assert(message);
3304
3305         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
3306         if (r == -ENXIO) {
3307                 uint64_t features = 0;
3308
3309                 /* EFI case, let's see if booting into boot loader entry is supported. */
3310
3311                 r = efi_loader_get_features(&features);
3312                 if (r < 0)
3313                         log_warning_errno(r, "Failed to determine whether reboot to boot loader entry is supported: %m");
3314                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_ENTRY_ONESHOT))
3315                         return sd_bus_reply_method_return(message, "s", "na");
3316
3317         } else if (r <= 0) {
3318                 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY */
3319
3320                 if (r < 0)
3321                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
3322
3323                 return sd_bus_reply_method_return(message, "s", "na");
3324         }
3325
3326         return return_test_polkit(
3327                         message,
3328                         "org.freedesktop.login1.set-reboot-to-boot-loader-entry",
3329                         /* details= */ NULL,
3330                         /* good_user= */ UID_INVALID,
3331                         error);
3332 }
3333
3334 static int property_get_boot_loader_entries(
3335                 sd_bus *bus,
3336                 const char *path,
3337                 const char *interface,
3338                 const char *property,
3339                 sd_bus_message *reply,
3340                 void *userdata,
3341                 sd_bus_error *error) {
3342
3343         _cleanup_(boot_config_free) BootConfig config = BOOT_CONFIG_NULL;
3344         Manager *m = ASSERT_PTR(userdata);
3345         size_t i;
3346         int r;
3347
3348         assert(bus);
3349         assert(reply);
3350
3351         r = boot_config_load_auto(&config, NULL, NULL);
3352         if (r < 0 && r != -ENOKEY) /* don't complain if there's no GPT found */
3353                 return r;
3354
3355         r = manager_read_efi_boot_loader_entries(m);
3356         if (r >= 0)
3357                 (void) boot_config_augment_from_loader(&config, m->efi_boot_loader_entries, /* auto_only= */ true);
3358
3359         r = sd_bus_message_open_container(reply, 'a', "s");
3360         if (r < 0)
3361                 return r;
3362
3363         for (i = 0; i < config.n_entries; i++) {
3364                 BootEntry *e = config.entries + i;
3365
3366                 r = sd_bus_message_append(reply, "s", e->id);
3367                 if (r < 0)
3368                         return r;
3369         }
3370
3371         return sd_bus_message_close_container(reply);
3372 }
3373
3374 static int method_set_wall_message(
3375                 sd_bus_message *message,
3376                 void *userdata,
3377                 sd_bus_error *error) {
3378
3379         int r;
3380         Manager *m = ASSERT_PTR(userdata);
3381         char *wall_message;
3382         int enable_wall_messages;
3383
3384         assert(message);
3385
3386         r = sd_bus_message_read(message, "sb", &wall_message, &enable_wall_messages);
3387         if (r < 0)
3388                 return r;
3389
3390         if (strlen(wall_message) > WALL_MESSAGE_MAX)
3391                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3392                         "Wall message too long, maximum permitted length is %u characters.",
3393                         WALL_MESSAGE_MAX);
3394
3395         /* Short-circuit the operation if the desired state is already in place, to
3396          * avoid an unnecessary polkit permission check. */
3397         if (streq_ptr(m->wall_message, empty_to_null(wall_message)) &&
3398             m->enable_wall_messages == enable_wall_messages)
3399                 goto done;
3400
3401         r = bus_verify_polkit_async(
3402                         message,
3403                         "org.freedesktop.login1.set-wall-message",
3404                         /* details= */ NULL,
3405                         &m->polkit_registry,
3406                         error);
3407         if (r < 0)
3408                 return r;
3409         if (r == 0)
3410                 return 1; /* Will call us back */
3411
3412         r = free_and_strdup(&m->wall_message, empty_to_null(wall_message));
3413         if (r < 0)
3414                 return log_oom();
3415
3416         m->enable_wall_messages = enable_wall_messages;
3417
3418  done:
3419         return sd_bus_reply_method_return(message, NULL);
3420 }
3421
3422 static int method_inhibit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3423         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
3424         _cleanup_(pidref_done) PidRef pidref = PIDREF_NULL;
3425         const char *who, *why, *what, *mode;
3426         _cleanup_free_ char *id = NULL;
3427         _cleanup_close_ int fifo_fd = -EBADF;
3428         Manager *m = ASSERT_PTR(userdata);
3429         InhibitMode mm;
3430         InhibitWhat w;
3431         pid_t pid;
3432         uid_t uid;
3433         int r;
3434
3435         assert(message);
3436
3437         r = sd_bus_message_read(message, "ssss", &what, &who, &why, &mode);
3438         if (r < 0)
3439                 return r;
3440
3441         w = inhibit_what_from_string(what);
3442         if (w <= 0)
3443                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3444                                          "Invalid what specification %s", what);
3445
3446         mm = inhibit_mode_from_string(mode);
3447         if (mm < 0)
3448                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3449                                          "Invalid mode specification %s", mode);
3450
3451         /* Delay is only supported for shutdown/sleep */
3452         if (mm == INHIBIT_DELAY && (w & ~(INHIBIT_SHUTDOWN|INHIBIT_SLEEP)))
3453                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3454                                          "Delay inhibitors only supported for shutdown and sleep");
3455
3456         /* Don't allow taking delay locks while we are already
3457          * executing the operation. We shouldn't create the impression
3458          * that the lock was successful if the machine is about to go
3459          * down/suspend any moment. */
3460         if (m->delayed_action && m->delayed_action->inhibit_what & w)
3461                 return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS,
3462                                          "The operation inhibition has been requested for is already running");
3463
3464         r = bus_verify_polkit_async(
3465                         message,
3466                         w == INHIBIT_SHUTDOWN             ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-shutdown" : "org.freedesktop.login1.inhibit-delay-shutdown") :
3467                         w == INHIBIT_SLEEP                ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-sleep"    : "org.freedesktop.login1.inhibit-delay-sleep") :
3468                         w == INHIBIT_IDLE                 ? "org.freedesktop.login1.inhibit-block-idle" :
3469                         w == INHIBIT_HANDLE_POWER_KEY     ? "org.freedesktop.login1.inhibit-handle-power-key" :
3470                         w == INHIBIT_HANDLE_SUSPEND_KEY   ? "org.freedesktop.login1.inhibit-handle-suspend-key" :
3471                         w == INHIBIT_HANDLE_REBOOT_KEY    ? "org.freedesktop.login1.inhibit-handle-reboot-key" :
3472                         w == INHIBIT_HANDLE_HIBERNATE_KEY ? "org.freedesktop.login1.inhibit-handle-hibernate-key" :
3473                                                             "org.freedesktop.login1.inhibit-handle-lid-switch",
3474                         /* details= */ NULL,
3475                         &m->polkit_registry,
3476                         error);
3477         if (r < 0)
3478                 return r;
3479         if (r == 0)
3480                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
3481
3482         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID|SD_BUS_CREDS_PID, &creds);
3483         if (r < 0)
3484                 return r;
3485
3486         r = sd_bus_creds_get_euid(creds, &uid);
3487         if (r < 0)
3488                 return r;
3489
3490         r = sd_bus_creds_get_pid(creds, &pid);
3491         if (r < 0)
3492                 return r;
3493
3494         r = pidref_set_pid(&pidref, pid);
3495         if (r < 0)
3496                 return sd_bus_error_set_errnof(error, r, "Failed pin source process "PID_FMT": %m", pid);
3497
3498         if (hashmap_size(m->inhibitors) >= m->inhibitors_max)
3499                 return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED,
3500                                          "Maximum number of inhibitors (%" PRIu64 ") reached, refusing further inhibitors.",
3501                                          m->inhibitors_max);
3502
3503         do {
3504                 id = mfree(id);
3505
3506                 if (asprintf(&id, "%" PRIu64, ++m->inhibit_counter) < 0)
3507                         return -ENOMEM;
3508
3509         } while (hashmap_get(m->inhibitors, id));
3510
3511         _cleanup_(inhibitor_freep) Inhibitor *i = NULL;
3512         r = manager_add_inhibitor(m, id, &i);
3513         if (r < 0)
3514                 return r;
3515
3516         i->what = w;
3517         i->mode = mm;
3518         i->pid = TAKE_PIDREF(pidref);
3519         i->uid = uid;
3520         i->why = strdup(why);
3521         i->who = strdup(who);
3522
3523         if (!i->why || !i->who)
3524                 return -ENOMEM;
3525
3526         fifo_fd = inhibitor_create_fifo(i);
3527         if (fifo_fd < 0)
3528                 return fifo_fd;
3529
3530         r = inhibitor_start(i);
3531         if (r < 0)
3532                 return r;
3533         TAKE_PTR(i);
3534
3535         return sd_bus_reply_method_return(message, "h", fifo_fd);
3536 }
3537
3538 static const sd_bus_vtable manager_vtable[] = {
3539         SD_BUS_VTABLE_START(0),
3540
3541         SD_BUS_WRITABLE_PROPERTY("EnableWallMessages", "b", bus_property_get_bool, bus_property_set_bool, offsetof(Manager, enable_wall_messages), 0),
3542         SD_BUS_WRITABLE_PROPERTY("WallMessage", "s", NULL, NULL, offsetof(Manager, wall_message), 0),
3543
3544         SD_BUS_PROPERTY("NAutoVTs", "u", NULL, offsetof(Manager, n_autovts), SD_BUS_VTABLE_PROPERTY_CONST),
3545         SD_BUS_PROPERTY("KillOnlyUsers", "as", NULL, offsetof(Manager, kill_only_users), SD_BUS_VTABLE_PROPERTY_CONST),
3546         SD_BUS_PROPERTY("KillExcludeUsers", "as", NULL, offsetof(Manager, kill_exclude_users), SD_BUS_VTABLE_PROPERTY_CONST),
3547         SD_BUS_PROPERTY("KillUserProcesses", "b", bus_property_get_bool, offsetof(Manager, kill_user_processes), SD_BUS_VTABLE_PROPERTY_CONST),
3548         SD_BUS_PROPERTY("RebootParameter", "s", property_get_reboot_parameter, 0, 0),
3549         SD_BUS_PROPERTY("RebootToFirmwareSetup", "b", property_get_reboot_to_firmware_setup, 0, 0),
3550         SD_BUS_PROPERTY("RebootToBootLoaderMenu", "t", property_get_reboot_to_boot_loader_menu, 0, 0),
3551         SD_BUS_PROPERTY("RebootToBootLoaderEntry", "s", property_get_reboot_to_boot_loader_entry, 0, 0),
3552         SD_BUS_PROPERTY("BootLoaderEntries", "as", property_get_boot_loader_entries, 0, SD_BUS_VTABLE_PROPERTY_CONST),
3553         SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3554         SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3555         SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3556         SD_BUS_PROPERTY("BlockInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3557         SD_BUS_PROPERTY("DelayInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3558         SD_BUS_PROPERTY("InhibitDelayMaxUSec", "t", NULL, offsetof(Manager, inhibit_delay_max), SD_BUS_VTABLE_PROPERTY_CONST),
3559         SD_BUS_PROPERTY("UserStopDelayUSec", "t", NULL, offsetof(Manager, user_stop_delay), SD_BUS_VTABLE_PROPERTY_CONST),
3560         SD_BUS_PROPERTY("SleepOperation", "as", property_get_sleep_operations, 0, SD_BUS_VTABLE_PROPERTY_CONST),
3561         SD_BUS_PROPERTY("HandlePowerKey", "s", property_get_handle_action, offsetof(Manager, handle_power_key), SD_BUS_VTABLE_PROPERTY_CONST),
3562         SD_BUS_PROPERTY("HandlePowerKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_power_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3563         SD_BUS_PROPERTY("HandleRebootKey", "s", property_get_handle_action, offsetof(Manager, handle_reboot_key), SD_BUS_VTABLE_PROPERTY_CONST),
3564         SD_BUS_PROPERTY("HandleRebootKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_reboot_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3565         SD_BUS_PROPERTY("HandleSuspendKey", "s", property_get_handle_action, offsetof(Manager, handle_suspend_key), SD_BUS_VTABLE_PROPERTY_CONST),
3566         SD_BUS_PROPERTY("HandleSuspendKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_suspend_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3567         SD_BUS_PROPERTY("HandleHibernateKey", "s", property_get_handle_action, offsetof(Manager, handle_hibernate_key), SD_BUS_VTABLE_PROPERTY_CONST),
3568         SD_BUS_PROPERTY("HandleHibernateKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_hibernate_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3569         SD_BUS_PROPERTY("HandleLidSwitch", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch), SD_BUS_VTABLE_PROPERTY_CONST),
3570         SD_BUS_PROPERTY("HandleLidSwitchExternalPower", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch_ep), SD_BUS_VTABLE_PROPERTY_CONST),
3571         SD_BUS_PROPERTY("HandleLidSwitchDocked", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch_docked), SD_BUS_VTABLE_PROPERTY_CONST),
3572         SD_BUS_PROPERTY("HoldoffTimeoutUSec", "t", NULL, offsetof(Manager, holdoff_timeout_usec), SD_BUS_VTABLE_PROPERTY_CONST),
3573         SD_BUS_PROPERTY("IdleAction", "s", property_get_handle_action, offsetof(Manager, idle_action), SD_BUS_VTABLE_PROPERTY_CONST),
3574         SD_BUS_PROPERTY("IdleActionUSec", "t", NULL, offsetof(Manager, idle_action_usec), SD_BUS_VTABLE_PROPERTY_CONST),
3575         SD_BUS_PROPERTY("PreparingForShutdown", "b", property_get_preparing, 0, 0),
3576         SD_BUS_PROPERTY("PreparingForSleep", "b", property_get_preparing, 0, 0),
3577         SD_BUS_PROPERTY("ScheduledShutdown", "(st)", property_get_scheduled_shutdown, 0, 0),
3578         SD_BUS_PROPERTY("Docked", "b", property_get_docked, 0, 0),
3579         SD_BUS_PROPERTY("LidClosed", "b", property_get_lid_closed, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3580         SD_BUS_PROPERTY("OnExternalPower", "b", property_get_on_external_power, 0, 0),
3581         SD_BUS_PROPERTY("RemoveIPC", "b", bus_property_get_bool, offsetof(Manager, remove_ipc), SD_BUS_VTABLE_PROPERTY_CONST),
3582         SD_BUS_PROPERTY("RuntimeDirectorySize", "t", NULL, offsetof(Manager, runtime_dir_size), SD_BUS_VTABLE_PROPERTY_CONST),
3583         SD_BUS_PROPERTY("RuntimeDirectoryInodesMax", "t", NULL, offsetof(Manager, runtime_dir_inodes), SD_BUS_VTABLE_PROPERTY_CONST),
3584         SD_BUS_PROPERTY("InhibitorsMax", "t", NULL, offsetof(Manager, inhibitors_max), SD_BUS_VTABLE_PROPERTY_CONST),
3585         SD_BUS_PROPERTY("NCurrentInhibitors", "t", property_get_hashmap_size, offsetof(Manager, inhibitors), 0),
3586         SD_BUS_PROPERTY("SessionsMax", "t", NULL, offsetof(Manager, sessions_max), SD_BUS_VTABLE_PROPERTY_CONST),
3587         SD_BUS_PROPERTY("NCurrentSessions", "t", property_get_hashmap_size, offsetof(Manager, sessions), 0),
3588         SD_BUS_PROPERTY("UserTasksMax", "t", property_get_compat_user_tasks_max, 0, SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
3589         SD_BUS_PROPERTY("StopIdleSessionUSec", "t", NULL, offsetof(Manager, stop_idle_session_usec), SD_BUS_VTABLE_PROPERTY_CONST),
3590
3591         SD_BUS_METHOD_WITH_ARGS("GetSession",
3592                                 SD_BUS_ARGS("s", session_id),
3593                                 SD_BUS_RESULT("o", object_path),
3594                                 method_get_session,
3595                                 SD_BUS_VTABLE_UNPRIVILEGED),
3596         SD_BUS_METHOD_WITH_ARGS("GetSessionByPID",
3597                                 SD_BUS_ARGS("u", pid),
3598                                 SD_BUS_RESULT("o", object_path),
3599                                 method_get_session_by_pid,
3600                                 SD_BUS_VTABLE_UNPRIVILEGED),
3601         SD_BUS_METHOD_WITH_ARGS("GetUser",
3602                                 SD_BUS_ARGS("u", uid),
3603                                 SD_BUS_RESULT("o", object_path),
3604                                 method_get_user,
3605                                 SD_BUS_VTABLE_UNPRIVILEGED),
3606         SD_BUS_METHOD_WITH_ARGS("GetUserByPID",
3607                                 SD_BUS_ARGS("u", pid),
3608                                 SD_BUS_RESULT("o", object_path),
3609                                 method_get_user_by_pid,
3610                                 SD_BUS_VTABLE_UNPRIVILEGED),
3611         SD_BUS_METHOD_WITH_ARGS("GetSeat",
3612                                 SD_BUS_ARGS("s", seat_id),
3613                                 SD_BUS_RESULT("o", object_path),
3614                                 method_get_seat,
3615                                 SD_BUS_VTABLE_UNPRIVILEGED),
3616         SD_BUS_METHOD_WITH_ARGS("ListSessions",
3617                                 SD_BUS_NO_ARGS,
3618                                 SD_BUS_RESULT("a(susso)", sessions),
3619                                 method_list_sessions,
3620                                 SD_BUS_VTABLE_UNPRIVILEGED),
3621         SD_BUS_METHOD_WITH_ARGS("ListUsers",
3622                                 SD_BUS_NO_ARGS,
3623                                 SD_BUS_RESULT("a(uso)", users),
3624                                 method_list_users,
3625                                 SD_BUS_VTABLE_UNPRIVILEGED),
3626         SD_BUS_METHOD_WITH_ARGS("ListSeats",
3627                                 SD_BUS_NO_ARGS,
3628                                 SD_BUS_RESULT("a(so)", seats),
3629                                 method_list_seats,
3630                                 SD_BUS_VTABLE_UNPRIVILEGED),
3631         SD_BUS_METHOD_WITH_ARGS("ListInhibitors",
3632                                 SD_BUS_NO_ARGS,
3633                                 SD_BUS_RESULT("a(ssssuu)", inhibitors),
3634                                 method_list_inhibitors,
3635                                 SD_BUS_VTABLE_UNPRIVILEGED),
3636         SD_BUS_METHOD_WITH_ARGS("CreateSession",
3637                                 SD_BUS_ARGS("u", uid,
3638                                             "u", pid,
3639                                             "s", service,
3640                                             "s", type,
3641                                             "s", class,
3642                                             "s", desktop,
3643                                             "s", seat_id,
3644                                             "u", vtnr,
3645                                             "s", tty,
3646                                             "s", display,
3647                                             "b", remote,
3648                                             "s", remote_user,
3649                                             "s", remote_host,
3650                                             "a(sv)", properties),
3651                                 SD_BUS_RESULT("s", session_id,
3652                                               "o", object_path,
3653                                               "s", runtime_path,
3654                                               "h", fifo_fd,
3655                                               "u", uid,
3656                                               "s", seat_id,
3657                                               "u", vtnr,
3658                                               "b", existing),
3659                                 method_create_session,
3660                                 0),
3661         SD_BUS_METHOD_WITH_ARGS("CreateSessionWithPIDFD",
3662                                 SD_BUS_ARGS("u", uid,
3663                                             "h", pidfd,
3664                                             "s", service,
3665                                             "s", type,
3666                                             "s", class,
3667                                             "s", desktop,
3668                                             "s", seat_id,
3669                                             "u", vtnr,
3670                                             "s", tty,
3671                                             "s", display,
3672                                             "b", remote,
3673                                             "s", remote_user,
3674                                             "s", remote_host,
3675                                             "t", flags,
3676                                             "a(sv)", properties),
3677                                 SD_BUS_RESULT("s", session_id,
3678                                               "o", object_path,
3679                                               "s", runtime_path,
3680                                               "h", fifo_fd,
3681                                               "u", uid,
3682                                               "s", seat_id,
3683                                               "u", vtnr,
3684                                               "b", existing),
3685                                 method_create_session_pidfd,
3686                                 0),
3687         SD_BUS_METHOD_WITH_ARGS("ReleaseSession",
3688                                 SD_BUS_ARGS("s", session_id),
3689                                 SD_BUS_NO_RESULT,
3690                                 method_release_session,
3691                                 0),
3692         SD_BUS_METHOD_WITH_ARGS("ActivateSession",
3693                                 SD_BUS_ARGS("s", session_id),
3694                                 SD_BUS_NO_RESULT,
3695                                 method_activate_session,
3696                                 SD_BUS_VTABLE_UNPRIVILEGED),
3697         SD_BUS_METHOD_WITH_ARGS("ActivateSessionOnSeat",
3698                                 SD_BUS_ARGS("s", session_id, "s", seat_id),
3699                                 SD_BUS_NO_RESULT,
3700                                 method_activate_session_on_seat,
3701                                 SD_BUS_VTABLE_UNPRIVILEGED),
3702         SD_BUS_METHOD_WITH_ARGS("LockSession",
3703                                 SD_BUS_ARGS("s", session_id),
3704                                 SD_BUS_NO_RESULT,
3705                                 method_lock_session,
3706                                 SD_BUS_VTABLE_UNPRIVILEGED),
3707         SD_BUS_METHOD_WITH_ARGS("UnlockSession",
3708                                 SD_BUS_ARGS("s", session_id),
3709                                 SD_BUS_NO_RESULT,
3710                                 method_lock_session,
3711                                 SD_BUS_VTABLE_UNPRIVILEGED),
3712         SD_BUS_METHOD("LockSessions",
3713                       NULL,
3714                       NULL,
3715                       method_lock_sessions,
3716                       SD_BUS_VTABLE_UNPRIVILEGED),
3717         SD_BUS_METHOD("UnlockSessions",
3718                       NULL,
3719                       NULL,
3720                       method_lock_sessions,
3721                       SD_BUS_VTABLE_UNPRIVILEGED),
3722         SD_BUS_METHOD_WITH_ARGS("KillSession",
3723                                 SD_BUS_ARGS("s", session_id, "s", who, "i", signal_number),
3724                                 SD_BUS_NO_RESULT,
3725                                 method_kill_session,
3726                                 SD_BUS_VTABLE_UNPRIVILEGED),
3727         SD_BUS_METHOD_WITH_ARGS("KillUser",
3728                                 SD_BUS_ARGS("u", uid, "i", signal_number),
3729                                 SD_BUS_NO_RESULT,
3730                                 method_kill_user,
3731                                 SD_BUS_VTABLE_UNPRIVILEGED),
3732         SD_BUS_METHOD_WITH_ARGS("TerminateSession",
3733                                 SD_BUS_ARGS("s", session_id),
3734                                 SD_BUS_NO_RESULT,
3735                                 method_terminate_session,
3736                                 SD_BUS_VTABLE_UNPRIVILEGED),
3737         SD_BUS_METHOD_WITH_ARGS("TerminateUser",
3738                                 SD_BUS_ARGS("u", uid),
3739                                 SD_BUS_NO_RESULT,
3740                                 method_terminate_user,
3741                                 SD_BUS_VTABLE_UNPRIVILEGED),
3742         SD_BUS_METHOD_WITH_ARGS("TerminateSeat",
3743                                 SD_BUS_ARGS("s", seat_id),
3744                                 SD_BUS_NO_RESULT,
3745                                 method_terminate_seat,
3746                                 SD_BUS_VTABLE_UNPRIVILEGED),
3747         SD_BUS_METHOD_WITH_ARGS("SetUserLinger",
3748                                 SD_BUS_ARGS("u", uid, "b", enable, "b", interactive),
3749                                 SD_BUS_NO_RESULT,
3750                                 method_set_user_linger,
3751                                 SD_BUS_VTABLE_UNPRIVILEGED),
3752         SD_BUS_METHOD_WITH_ARGS("AttachDevice",
3753                                 SD_BUS_ARGS("s", seat_id, "s", sysfs_path, "b", interactive),
3754                                 SD_BUS_NO_RESULT,
3755                                 method_attach_device,
3756                                 SD_BUS_VTABLE_UNPRIVILEGED),
3757         SD_BUS_METHOD_WITH_ARGS("FlushDevices",
3758                                 SD_BUS_ARGS("b", interactive),
3759                                 SD_BUS_NO_RESULT,
3760                                 method_flush_devices,
3761                                 SD_BUS_VTABLE_UNPRIVILEGED),
3762         SD_BUS_METHOD_WITH_ARGS("PowerOff",
3763                                 SD_BUS_ARGS("b", interactive),
3764                                 SD_BUS_NO_RESULT,
3765                                 method_poweroff,
3766                                 SD_BUS_VTABLE_UNPRIVILEGED),
3767         SD_BUS_METHOD_WITH_ARGS("PowerOffWithFlags",
3768                                 SD_BUS_ARGS("t", flags),
3769                                 SD_BUS_NO_RESULT,
3770                                 method_poweroff,
3771                                 SD_BUS_VTABLE_UNPRIVILEGED),
3772         SD_BUS_METHOD_WITH_ARGS("Reboot",
3773                                 SD_BUS_ARGS("b", interactive),
3774                                 SD_BUS_NO_RESULT,
3775                                 method_reboot,
3776                                 SD_BUS_VTABLE_UNPRIVILEGED),
3777         SD_BUS_METHOD_WITH_ARGS("RebootWithFlags",
3778                                 SD_BUS_ARGS("t", flags),
3779                                 SD_BUS_NO_RESULT,
3780                                 method_reboot,
3781                                 SD_BUS_VTABLE_UNPRIVILEGED),
3782         SD_BUS_METHOD_WITH_ARGS("Halt",
3783                                 SD_BUS_ARGS("b", interactive),
3784                                 SD_BUS_NO_RESULT,
3785                                 method_halt,
3786                                 SD_BUS_VTABLE_UNPRIVILEGED),
3787         SD_BUS_METHOD_WITH_ARGS("HaltWithFlags",
3788                                 SD_BUS_ARGS("t", flags),
3789                                 SD_BUS_NO_RESULT,
3790                                 method_halt,
3791                                 SD_BUS_VTABLE_UNPRIVILEGED),
3792         SD_BUS_METHOD_WITH_ARGS("Suspend",
3793                                 SD_BUS_ARGS("b", interactive),
3794                                 SD_BUS_NO_RESULT,
3795                                 method_suspend,
3796                                 SD_BUS_VTABLE_UNPRIVILEGED),
3797         SD_BUS_METHOD_WITH_ARGS("SuspendWithFlags",
3798                                 SD_BUS_ARGS("t", flags),
3799                                 SD_BUS_NO_RESULT,
3800                                 method_suspend,
3801                                 SD_BUS_VTABLE_UNPRIVILEGED),
3802         SD_BUS_METHOD_WITH_ARGS("Hibernate",
3803                                 SD_BUS_ARGS("b", interactive),
3804                                 SD_BUS_NO_RESULT,
3805                                 method_hibernate,
3806                                 SD_BUS_VTABLE_UNPRIVILEGED),
3807         SD_BUS_METHOD_WITH_ARGS("HibernateWithFlags",
3808                                 SD_BUS_ARGS("t", flags),
3809                                 SD_BUS_NO_RESULT,
3810                                 method_hibernate,
3811                                 SD_BUS_VTABLE_UNPRIVILEGED),
3812         SD_BUS_METHOD_WITH_ARGS("HybridSleep",
3813                                 SD_BUS_ARGS("b", interactive),
3814                                 SD_BUS_NO_RESULT,
3815                                 method_hybrid_sleep,
3816                                 SD_BUS_VTABLE_UNPRIVILEGED),
3817         SD_BUS_METHOD_WITH_ARGS("HybridSleepWithFlags",
3818                                 SD_BUS_ARGS("t", flags),
3819                                 SD_BUS_NO_RESULT,
3820                                 method_hybrid_sleep,
3821                                 SD_BUS_VTABLE_UNPRIVILEGED),
3822         SD_BUS_METHOD_WITH_ARGS("SuspendThenHibernate",
3823                                 SD_BUS_ARGS("b", interactive),
3824                                 SD_BUS_NO_RESULT,
3825                                 method_suspend_then_hibernate,
3826                                 SD_BUS_VTABLE_UNPRIVILEGED),
3827         SD_BUS_METHOD_WITH_ARGS("SuspendThenHibernateWithFlags",
3828                                 SD_BUS_ARGS("t", flags),
3829                                 SD_BUS_NO_RESULT,
3830                                 method_suspend_then_hibernate,
3831                                 SD_BUS_VTABLE_UNPRIVILEGED),
3832         SD_BUS_METHOD_WITH_ARGS("Sleep",
3833                                 SD_BUS_ARGS("t", flags),
3834                                 SD_BUS_NO_RESULT,
3835                                 method_sleep,
3836                                 SD_BUS_VTABLE_UNPRIVILEGED),
3837         SD_BUS_METHOD_WITH_ARGS("CanPowerOff",
3838                                 SD_BUS_NO_ARGS,
3839                                 SD_BUS_RESULT("s", result),
3840                                 method_can_poweroff,
3841                                 SD_BUS_VTABLE_UNPRIVILEGED),
3842         SD_BUS_METHOD_WITH_ARGS("CanReboot",
3843                                 SD_BUS_NO_ARGS,
3844                                 SD_BUS_RESULT("s", result),
3845                                 method_can_reboot,
3846                                 SD_BUS_VTABLE_UNPRIVILEGED),
3847         SD_BUS_METHOD_WITH_ARGS("CanHalt",
3848                                 SD_BUS_NO_ARGS,
3849                                 SD_BUS_RESULT("s", result),
3850                                 method_can_halt,
3851                                 SD_BUS_VTABLE_UNPRIVILEGED),
3852         SD_BUS_METHOD_WITH_ARGS("CanSuspend",
3853                                 SD_BUS_NO_ARGS,
3854                                 SD_BUS_RESULT("s", result),
3855                                 method_can_suspend,
3856                                 SD_BUS_VTABLE_UNPRIVILEGED),
3857         SD_BUS_METHOD_WITH_ARGS("CanHibernate",
3858                                 SD_BUS_NO_ARGS,
3859                                 SD_BUS_RESULT("s", result),
3860                                 method_can_hibernate,
3861                                 SD_BUS_VTABLE_UNPRIVILEGED),
3862         SD_BUS_METHOD_WITH_ARGS("CanHybridSleep",
3863                                 SD_BUS_NO_ARGS,
3864                                 SD_BUS_RESULT("s", result),
3865                                 method_can_hybrid_sleep,
3866                                 SD_BUS_VTABLE_UNPRIVILEGED),
3867         SD_BUS_METHOD_WITH_ARGS("CanSuspendThenHibernate",
3868                                 SD_BUS_NO_ARGS,
3869                                 SD_BUS_RESULT("s", result),
3870                                 method_can_suspend_then_hibernate,
3871                                 SD_BUS_VTABLE_UNPRIVILEGED),
3872         SD_BUS_METHOD_WITH_ARGS("CanSleep",
3873                                 SD_BUS_NO_ARGS,
3874                                 SD_BUS_RESULT("s", result),
3875                                 method_can_sleep,
3876                                 SD_BUS_VTABLE_UNPRIVILEGED),
3877         SD_BUS_METHOD_WITH_ARGS("ScheduleShutdown",
3878                                 SD_BUS_ARGS("s", type, "t", usec),
3879                                 SD_BUS_NO_RESULT,
3880                                 method_schedule_shutdown,
3881                                 SD_BUS_VTABLE_UNPRIVILEGED),
3882         SD_BUS_METHOD_WITH_ARGS("CancelScheduledShutdown",
3883                                 SD_BUS_NO_ARGS,
3884                                 SD_BUS_RESULT("b", cancelled),
3885                                 method_cancel_scheduled_shutdown,
3886                                 SD_BUS_VTABLE_UNPRIVILEGED),
3887         SD_BUS_METHOD_WITH_ARGS("Inhibit",
3888                                 SD_BUS_ARGS("s", what, "s", who, "s", why, "s", mode),
3889                                 SD_BUS_RESULT("h", pipe_fd),
3890                                 method_inhibit,
3891                                 SD_BUS_VTABLE_UNPRIVILEGED),
3892         SD_BUS_METHOD_WITH_ARGS("CanRebootParameter",
3893                                 SD_BUS_NO_ARGS,
3894                                 SD_BUS_RESULT("s", result),
3895                                 method_can_reboot_parameter,
3896                                 SD_BUS_VTABLE_UNPRIVILEGED),
3897         SD_BUS_METHOD_WITH_ARGS("SetRebootParameter",
3898                                 SD_BUS_ARGS("s", parameter),
3899                                 SD_BUS_NO_RESULT,
3900                                 method_set_reboot_parameter,
3901                                 SD_BUS_VTABLE_UNPRIVILEGED),
3902         SD_BUS_METHOD_WITH_ARGS("CanRebootToFirmwareSetup",
3903                                 SD_BUS_NO_ARGS,
3904                                 SD_BUS_RESULT("s", result),
3905                                 method_can_reboot_to_firmware_setup,
3906                                 SD_BUS_VTABLE_UNPRIVILEGED),
3907         SD_BUS_METHOD_WITH_ARGS("SetRebootToFirmwareSetup",
3908                                 SD_BUS_ARGS("b", enable),
3909                                 SD_BUS_NO_RESULT,
3910                                 method_set_reboot_to_firmware_setup,
3911                                 SD_BUS_VTABLE_UNPRIVILEGED),
3912         SD_BUS_METHOD_WITH_ARGS("CanRebootToBootLoaderMenu",
3913                                 SD_BUS_NO_ARGS,
3914                                 SD_BUS_RESULT("s", result),
3915                                 method_can_reboot_to_boot_loader_menu,
3916                                 SD_BUS_VTABLE_UNPRIVILEGED),
3917         SD_BUS_METHOD_WITH_ARGS("SetRebootToBootLoaderMenu",
3918                                 SD_BUS_ARGS("t", timeout),
3919                                 SD_BUS_NO_RESULT,
3920                                 method_set_reboot_to_boot_loader_menu,
3921                                 SD_BUS_VTABLE_UNPRIVILEGED),
3922         SD_BUS_METHOD_WITH_ARGS("CanRebootToBootLoaderEntry",
3923                                 SD_BUS_NO_ARGS,
3924                                 SD_BUS_RESULT("s", result),
3925                                 method_can_reboot_to_boot_loader_entry,
3926                                 SD_BUS_VTABLE_UNPRIVILEGED),
3927         SD_BUS_METHOD_WITH_ARGS("SetRebootToBootLoaderEntry",
3928                                 SD_BUS_ARGS("s", boot_loader_entry),
3929                                 SD_BUS_NO_RESULT,
3930                                 method_set_reboot_to_boot_loader_entry,
3931                                 SD_BUS_VTABLE_UNPRIVILEGED),
3932         SD_BUS_METHOD_WITH_ARGS("SetWallMessage",
3933                                 SD_BUS_ARGS("s", wall_message, "b", enable),
3934                                 SD_BUS_NO_RESULT,
3935                                 method_set_wall_message,
3936                                 SD_BUS_VTABLE_UNPRIVILEGED),
3937
3938         SD_BUS_SIGNAL_WITH_ARGS("SessionNew",
3939                                 SD_BUS_ARGS("s", session_id, "o", object_path),
3940                                 0),
3941         SD_BUS_SIGNAL_WITH_ARGS("SessionRemoved",
3942                                 SD_BUS_ARGS("s", session_id, "o", object_path),
3943                                 0),
3944         SD_BUS_SIGNAL_WITH_ARGS("UserNew",
3945                                 SD_BUS_ARGS("u", uid, "o", object_path),
3946                                 0),
3947         SD_BUS_SIGNAL_WITH_ARGS("UserRemoved",
3948                                 SD_BUS_ARGS("u", uid, "o", object_path),
3949                                 0),
3950         SD_BUS_SIGNAL_WITH_ARGS("SeatNew",
3951                                 SD_BUS_ARGS("s", seat_id, "o", object_path),
3952                                 0),
3953         SD_BUS_SIGNAL_WITH_ARGS("SeatRemoved",
3954                                 SD_BUS_ARGS("s", seat_id, "o", object_path),
3955                                 0),
3956         SD_BUS_SIGNAL_WITH_ARGS("PrepareForShutdown",
3957                                 SD_BUS_ARGS("b", start),
3958                                 0),
3959         SD_BUS_SIGNAL_WITH_ARGS("PrepareForShutdownWithMetadata",
3960                                 SD_BUS_ARGS("b", start, "a{sv}", metadata),
3961                                 0),
3962         SD_BUS_SIGNAL_WITH_ARGS("PrepareForSleep",
3963                                 SD_BUS_ARGS("b", start),
3964                                 0),
3965
3966         SD_BUS_VTABLE_END
3967 };
3968
3969 const BusObjectImplementation manager_object = {
3970         "/org/freedesktop/login1",
3971         "org.freedesktop.login1.Manager",
3972         .vtables = BUS_VTABLES(manager_vtable),
3973         .children = BUS_IMPLEMENTATIONS(&seat_object,
3974                                         &session_object,
3975                                         &user_object),
3976 };
3977
3978 static int session_jobs_reply(Session *s, uint32_t jid, const char *unit, const char *result) {
3979         assert(s);
3980         assert(unit);
3981
3982         if (!s->started)
3983                 return 0;
3984
3985         if (result && !streq(result, "done")) {
3986                 _cleanup_(sd_bus_error_free) sd_bus_error e = SD_BUS_ERROR_NULL;
3987
3988                 sd_bus_error_setf(&e, BUS_ERROR_JOB_FAILED,
3989                                   "Job %u for unit '%s' failed with '%s'", jid, unit, result);
3990                 return session_send_create_reply(s, &e);
3991         }
3992
3993         return session_send_create_reply(s, NULL);
3994 }
3995
3996 int match_job_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3997         const char *path, *result, *unit;
3998         Manager *m = ASSERT_PTR(userdata);
3999         Session *session;
4000         uint32_t id;
4001         User *user;
4002         int r;
4003
4004         assert(message);
4005
4006         r = sd_bus_message_read(message, "uoss", &id, &path, &unit, &result);
4007         if (r < 0) {
4008                 bus_log_parse_error(r);
4009                 return 0;
4010         }
4011
4012         if (m->action_job && streq(m->action_job, path)) {
4013                 assert(m->delayed_action);
4014                 log_info("Operation '%s' finished.", handle_action_to_string(m->delayed_action->handle));
4015
4016                 /* Tell people that they now may take a lock again */
4017                 (void) send_prepare_for(m, m->delayed_action, false);
4018
4019                 m->action_job = mfree(m->action_job);
4020                 m->delayed_action = NULL;
4021                 return 0;
4022         }
4023
4024         session = hashmap_get(m->session_units, unit);
4025         if (session) {
4026                 if (streq_ptr(path, session->scope_job)) {
4027                         session->scope_job = mfree(session->scope_job);
4028                         (void) session_jobs_reply(session, id, unit, result);
4029
4030                         session_save(session);
4031                         user_save(session->user);
4032                 }
4033
4034                 session_add_to_gc_queue(session);
4035         }
4036
4037         user = hashmap_get(m->user_units, unit);
4038         if (user) {
4039                 if (streq_ptr(path, user->service_job)) {
4040                         user->service_job = mfree(user->service_job);
4041
4042                         LIST_FOREACH(sessions_by_user, s, user->sessions)
4043                                 (void) session_jobs_reply(s, id, unit, NULL /* don't propagate user service failures to the client */);
4044
4045                         user_save(user);
4046                 }
4047
4048                 user_add_to_gc_queue(user);
4049         }
4050
4051         return 0;
4052 }
4053
4054 int match_unit_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
4055         const char *path, *unit;
4056         Manager *m = ASSERT_PTR(userdata);
4057         Session *session;
4058         User *user;
4059         int r;
4060
4061         assert(message);
4062
4063         r = sd_bus_message_read(message, "so", &unit, &path);
4064         if (r < 0) {
4065                 bus_log_parse_error(r);
4066                 return 0;
4067         }
4068
4069         session = hashmap_get(m->session_units, unit);
4070         if (session)
4071                 session_add_to_gc_queue(session);
4072
4073         user = hashmap_get(m->user_units, unit);
4074         if (user)
4075                 user_add_to_gc_queue(user);
4076
4077         return 0;
4078 }
4079
4080 int match_properties_changed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
4081         _cleanup_free_ char *unit = NULL;
4082         Manager *m = ASSERT_PTR(userdata);
4083         const char *path;
4084         Session *session;
4085         User *user;
4086         int r;
4087
4088         assert(message);
4089
4090         path = sd_bus_message_get_path(message);
4091         if (!path)
4092                 return 0;
4093
4094         r = unit_name_from_dbus_path(path, &unit);
4095         if (r == -EINVAL) /* not a unit */
4096                 return 0;
4097         if (r < 0) {
4098                 log_oom();
4099                 return 0;
4100         }
4101
4102         session = hashmap_get(m->session_units, unit);
4103         if (session)
4104                 session_add_to_gc_queue(session);
4105
4106         user = hashmap_get(m->user_units, unit);
4107         if (user)
4108                 user_add_to_gc_queue(user);
4109
4110         return 0;
4111 }
4112
4113 int match_reloading(sd_bus_message *message, void *userdata, sd_bus_error *error) {
4114         Manager *m = ASSERT_PTR(userdata);
4115         Session *session;
4116         int b, r;
4117
4118         assert(message);
4119
4120         r = sd_bus_message_read(message, "b", &b);
4121         if (r < 0) {
4122                 bus_log_parse_error(r);
4123                 return 0;
4124         }
4125
4126         if (b)
4127                 return 0;
4128
4129         /* systemd finished reloading, let's recheck all our sessions */
4130         log_debug("System manager has been reloaded, rechecking sessions...");
4131
4132         HASHMAP_FOREACH(session, m->sessions)
4133                 session_add_to_gc_queue(session);
4134
4135         return 0;
4136 }
4137
4138 int manager_send_changed(Manager *manager, const char *property, ...) {
4139         char **l;
4140
4141         assert(manager);
4142
4143         l = strv_from_stdarg_alloca(property);
4144
4145         return sd_bus_emit_properties_changed_strv(
4146                         manager->bus,
4147                         "/org/freedesktop/login1",
4148                         "org.freedesktop.login1.Manager",
4149                         l);
4150 }
4151
4152 static int strdup_job(sd_bus_message *reply, char **job) {
4153         const char *j;
4154         char *copy;
4155         int r;
4156
4157         r = sd_bus_message_read(reply, "o", &j);
4158         if (r < 0)
4159                 return r;
4160
4161         copy = strdup(j);
4162         if (!copy)
4163                 return -ENOMEM;
4164
4165         *job = copy;
4166         return 1;
4167 }
4168
4169 int manager_start_scope(
4170                 Manager *manager,
4171                 const char *scope,
4172                 const PidRef *pidref,
4173                 const char *slice,
4174                 const char *description,
4175                 char **wants,
4176                 char **after,
4177                 const char *requires_mounts_for,
4178                 sd_bus_message *more_properties,
4179                 sd_bus_error *error,
4180                 char **job) {
4181
4182         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
4183         int r;
4184
4185         assert(manager);
4186         assert(scope);
4187         assert(pidref_is_set(pidref));
4188         assert(job);
4189
4190         r = bus_message_new_method_call(manager->bus, &m, bus_systemd_mgr, "StartTransientUnit");
4191         if (r < 0)
4192                 return r;
4193
4194         r = sd_bus_message_append(m, "ss", strempty(scope), "fail");
4195         if (r < 0)
4196                 return r;
4197
4198         r = sd_bus_message_open_container(m, 'a', "(sv)");
4199         if (r < 0)
4200                 return r;
4201
4202         if (!isempty(slice)) {
4203                 r = sd_bus_message_append(m, "(sv)", "Slice", "s", slice);
4204                 if (r < 0)
4205                         return r;
4206         }
4207
4208         if (!isempty(description)) {
4209                 r = sd_bus_message_append(m, "(sv)", "Description", "s", description);
4210                 if (r < 0)
4211                         return r;
4212         }
4213
4214         STRV_FOREACH(i, wants) {
4215                 r = sd_bus_message_append(m, "(sv)", "Wants", "as", 1, *i);
4216                 if (r < 0)
4217                         return r;
4218         }
4219
4220         STRV_FOREACH(i, after) {
4221                 r = sd_bus_message_append(m, "(sv)", "After", "as", 1, *i);
4222                 if (r < 0)
4223                         return r;
4224         }
4225
4226         if (!empty_or_root(requires_mounts_for)) {
4227                 r = sd_bus_message_append(m, "(sv)", "RequiresMountsFor", "as", 1, requires_mounts_for);
4228                 if (r < 0)
4229                         return r;
4230         }
4231
4232         /* Make sure that the session shells are terminated with SIGHUP since bash and friends tend to ignore
4233          * SIGTERM */
4234         r = sd_bus_message_append(m, "(sv)", "SendSIGHUP", "b", true);
4235         if (r < 0)
4236                 return r;
4237
4238         r = bus_append_scope_pidref(m, pidref);
4239         if (r < 0)
4240                 return r;
4241
4242         /* For login session scopes, if a process is OOM killed by the kernel, *don't* terminate the rest of
4243            the scope */
4244         r = sd_bus_message_append(m, "(sv)", "OOMPolicy", "s", "continue");
4245         if (r < 0)
4246                 return r;
4247
4248         /* disable TasksMax= for the session scope, rely on the slice setting for it */
4249         r = sd_bus_message_append(m, "(sv)", "TasksMax", "t", UINT64_MAX);
4250         if (r < 0)
4251                 return bus_log_create_error(r);
4252
4253         if (more_properties) {
4254                 /* If TasksMax also appears here, it will overwrite the default value set above */
4255                 r = sd_bus_message_copy(m, more_properties, true);
4256                 if (r < 0)
4257                         return r;
4258         }
4259
4260         r = sd_bus_message_close_container(m);
4261         if (r < 0)
4262                 return r;
4263
4264         r = sd_bus_message_append(m, "a(sa(sv))", 0);
4265         if (r < 0)
4266                 return r;
4267
4268         r = sd_bus_call(manager->bus, m, 0, error, &reply);
4269         if (r < 0)
4270                 return r;
4271
4272         return strdup_job(reply, job);
4273 }
4274
4275 int manager_start_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) {
4276         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4277         int r;
4278
4279         assert(manager);
4280         assert(unit);
4281         assert(job);
4282
4283         r = bus_call_method(
4284                         manager->bus,
4285                         bus_systemd_mgr,
4286                         "StartUnit",
4287                         error,
4288                         &reply,
4289                         "ss", unit, "replace");
4290         if (r < 0)
4291                 return r;
4292
4293         return strdup_job(reply, job);
4294 }
4295
4296 int manager_stop_unit(Manager *manager, const char *unit, const char *job_mode, sd_bus_error *error, char **ret_job) {
4297         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4298         int r;
4299
4300         assert(manager);
4301         assert(unit);
4302         assert(ret_job);
4303
4304         r = bus_call_method(
4305                         manager->bus,
4306                         bus_systemd_mgr,
4307                         "StopUnit",
4308                         error,
4309                         &reply,
4310                         "ss", unit, job_mode ?: "fail");
4311         if (r < 0) {
4312                 if (sd_bus_error_has_names(error, BUS_ERROR_NO_SUCH_UNIT,
4313                                                   BUS_ERROR_LOAD_FAILED)) {
4314
4315                         *ret_job = NULL;
4316                         sd_bus_error_free(error);
4317                         return 0;
4318                 }
4319
4320                 return r;
4321         }
4322
4323         return strdup_job(reply, ret_job);
4324 }
4325
4326 int manager_abandon_scope(Manager *manager, const char *scope, sd_bus_error *ret_error) {
4327         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4328         _cleanup_free_ char *path = NULL;
4329         int r;
4330
4331         assert(manager);
4332         assert(scope);
4333
4334         path = unit_dbus_path_from_name(scope);
4335         if (!path)
4336                 return -ENOMEM;
4337
4338         r = sd_bus_call_method(
4339                         manager->bus,
4340                         "org.freedesktop.systemd1",
4341                         path,
4342                         "org.freedesktop.systemd1.Scope",
4343                         "Abandon",
4344                         &error,
4345                         NULL,
4346                         NULL);
4347         if (r < 0) {
4348                 if (sd_bus_error_has_names(&error, BUS_ERROR_NO_SUCH_UNIT,
4349                                                    BUS_ERROR_LOAD_FAILED,
4350                                                    BUS_ERROR_SCOPE_NOT_RUNNING))
4351                         return 0;
4352
4353                 sd_bus_error_move(ret_error, &error);
4354                 return r;
4355         }
4356
4357         return 1;
4358 }
4359
4360 int manager_kill_unit(Manager *manager, const char *unit, KillWho who, int signo, sd_bus_error *error) {
4361         assert(manager);
4362         assert(unit);
4363
4364         return bus_call_method(
4365                         manager->bus,
4366                         bus_systemd_mgr,
4367                         "KillUnit",
4368                         error,
4369                         NULL,
4370                         "ssi", unit, who == KILL_LEADER ? "main" : "all", signo);
4371 }
4372
4373 int manager_unit_is_active(Manager *manager, const char *unit, sd_bus_error *ret_error) {
4374         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4375         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4376         _cleanup_free_ char *path = NULL;
4377         const char *state;
4378         int r;
4379
4380         assert(manager);
4381         assert(unit);
4382
4383         path = unit_dbus_path_from_name(unit);
4384         if (!path)
4385                 return -ENOMEM;
4386
4387         r = sd_bus_get_property(
4388                         manager->bus,
4389                         "org.freedesktop.systemd1",
4390                         path,
4391                         "org.freedesktop.systemd1.Unit",
4392                         "ActiveState",
4393                         &error,
4394                         &reply,
4395                         "s");
4396         if (r < 0) {
4397                 /* systemd might have dropped off momentarily, let's
4398                  * not make this an error */
4399                 if (sd_bus_error_has_names(&error, SD_BUS_ERROR_NO_REPLY,
4400                                                    SD_BUS_ERROR_DISCONNECTED))
4401                         return true;
4402
4403                 /* If the unit is already unloaded then it's not
4404                  * active */
4405                 if (sd_bus_error_has_names(&error, BUS_ERROR_NO_SUCH_UNIT,
4406                                                    BUS_ERROR_LOAD_FAILED))
4407                         return false;
4408
4409                 sd_bus_error_move(ret_error, &error);
4410                 return r;
4411         }
4412
4413         r = sd_bus_message_read(reply, "s", &state);
4414         if (r < 0)
4415                 return r;
4416
4417         return !STR_IN_SET(state, "inactive", "failed");
4418 }
4419
4420 int manager_job_is_active(Manager *manager, const char *path, sd_bus_error *ret_error) {
4421         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4422         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4423         int r;
4424
4425         assert(manager);
4426         assert(path);
4427
4428         r = sd_bus_get_property(
4429                         manager->bus,
4430                         "org.freedesktop.systemd1",
4431                         path,
4432                         "org.freedesktop.systemd1.Job",
4433                         "State",
4434                         &error,
4435                         &reply,
4436                         "s");
4437         if (r < 0) {
4438                 if (sd_bus_error_has_names(&error, SD_BUS_ERROR_NO_REPLY,
4439                                                    SD_BUS_ERROR_DISCONNECTED))
4440                         return true;
4441
4442                 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_OBJECT))
4443                         return false;
4444
4445                 sd_bus_error_move(ret_error, &error);
4446                 return r;
4447         }
4448
4449         /* We don't actually care about the state really. The fact
4450          * that we could read the job state is enough for us */
4451
4452         return true;
4453 }