src/login/logind-dbus.c

   1 /* SPDX-License-Identifier: LGPL-2.1-or-later */
   2
   3 #include <errno.h>
   4 #include <sys/stat.h>
   5 #include <unistd.h>
   6
   7 #include "sd-device.h"
   8 #include "sd-messages.h"
   9
  10 #include "alloc-util.h"
  11 #include "audit-util.h"
  12 #include "bootspec.h"
  13 #include "bus-common-errors.h"
  14 #include "bus-error.h"
  15 #include "bus-get-properties.h"
  16 #include "bus-locator.h"
  17 #include "bus-polkit.h"
  18 #include "bus-unit-util.h"
  19 #include "bus-util.h"
  20 #include "cgroup-util.h"
  21 #include "device-util.h"
  22 #include "dirent-util.h"
  23 #include "efi-api.h"
  24 #include "efi-loader.h"
  25 #include "efivars.h"
  26 #include "env-file.h"
  27 #include "env-util.h"
  28 #include "escape.h"
  29 #include "event-util.h"
  30 #include "fd-util.h"
  31 #include "fileio-label.h"
  32 #include "fileio.h"
  33 #include "format-util.h"
  34 #include "fs-util.h"
  35 #include "logind-action.h"
  36 #include "logind-dbus.h"
  37 #include "logind-polkit.h"
  38 #include "logind-seat-dbus.h"
  39 #include "logind-session-dbus.h"
  40 #include "logind-user-dbus.h"
  41 #include "logind.h"
  42 #include "missing_capability.h"
  43 #include "mkdir-label.h"
  44 #include "parse-util.h"
  45 #include "path-util.h"
  46 #include "process-util.h"
  47 #include "reboot-util.h"
  48 #include "selinux-util.h"
  49 #include "sleep-config.h"
  50 #include "special.h"
  51 #include "serialize.h"
  52 #include "stdio-util.h"
  53 #include "strv.h"
  54 #include "terminal-util.h"
  55 #include "tmpfile-util.h"
  56 #include "unit-name.h"
  57 #include "user-util.h"
  58 #include "utmp-wtmp.h"
  59 #include "virt.h"
  60 #include "wall.h"
  61
  62 /* As a random fun fact sysvinit had a 252 (256-(strlen(" \r\n")+1))
  63  * character limit for the wall message.
  64  * https://git.savannah.nongnu.org/cgit/sysvinit.git/tree/src/shutdown.c#n72
  65  * There is no real technical need for that but doesn't make sense
  66  * to store arbitrary amounts either. As we are not stingy here, we
  67  * allow 4k.
  68  */
  69 #define WALL_MESSAGE_MAX 4096U
  70
  71 #define SHUTDOWN_SCHEDULE_FILE "/run/systemd/shutdown/scheduled"
  72
  73 static int update_schedule_file(Manager *m);
  74 static void reset_scheduled_shutdown(Manager *m);
  75 static int manager_setup_shutdown_timers(Manager* m);
  76
  77 static int get_sender_session(
  78                 Manager *m,
  79                 sd_bus_message *message,
  80                 bool consult_display,
  81                 sd_bus_error *error,
  82                 Session **ret) {
  83
  84         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
  85         Session *session = NULL;
  86         const char *name;
  87         int r;
  88
  89         /* Acquire the sender's session. This first checks if the sending process is inside a session itself,
  90          * and returns that. If not and 'consult_display' is true, this returns the display session of the
  91          * owning user of the caller. */
  92
  93         r = sd_bus_query_sender_creds(message,
  94                                       SD_BUS_CREDS_SESSION|SD_BUS_CREDS_AUGMENT|
  95                                       (consult_display ? SD_BUS_CREDS_OWNER_UID : 0), &creds);
  96         if (r < 0)
  97                 return r;
  98
  99         r = sd_bus_creds_get_session(creds, &name);
 100         if (r < 0) {
 101                 if (r != -ENXIO)
 102                         return r;
 103
 104                 if (consult_display) {
 105                         uid_t uid;
 106
 107                         r = sd_bus_creds_get_owner_uid(creds, &uid);
 108                         if (r < 0) {
 109                                 if (r != -ENXIO)
 110                                         return r;
 111                         } else {
 112                                 User *user;
 113
 114                                 user = hashmap_get(m->users, UID_TO_PTR(uid));
 115                                 if (user)
 116                                         session = user->display;
 117                         }
 118                 }
 119         } else
 120                 session = hashmap_get(m->sessions, name);
 121
 122         if (!session)
 123                 return sd_bus_error_setf(error, BUS_ERROR_NO_SESSION_FOR_PID,
 124                                          consult_display ?
 125                                          "Caller does not belong to any known session and doesn't own any suitable session." :
 126                                          "Caller does not belong to any known session.");
 127
 128         *ret = session;
 129         return 0;
 130 }
 131
 132 int manager_get_session_from_creds(
 133                 Manager *m,
 134                 sd_bus_message *message,
 135                 const char *name,
 136                 sd_bus_error *error,
 137                 Session **ret) {
 138
 139         Session *session;
 140
 141         assert(m);
 142         assert(ret);
 143
 144         if (SEAT_IS_SELF(name)) /* the caller's own session */
 145                 return get_sender_session(m, message, false, error, ret);
 146         if (SEAT_IS_AUTO(name)) /* The caller's own session if they have one, otherwise their user's display session */
 147                 return get_sender_session(m, message, true, error, ret);
 148
 149         session = hashmap_get(m->sessions, name);
 150         if (!session)
 151                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SESSION, "No session '%s' known", name);
 152
 153         *ret = session;
 154         return 0;
 155 }
 156
 157 static int get_sender_user(Manager *m, sd_bus_message *message, sd_bus_error *error, User **ret) {
 158         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 159         uid_t uid;
 160         User *user;
 161         int r;
 162
 163         /* Note that we get the owner UID of the session, not the actual client UID here! */
 164         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds);
 165         if (r < 0)
 166                 return r;
 167
 168         r = sd_bus_creds_get_owner_uid(creds, &uid);
 169         if (r < 0) {
 170                 if (r != -ENXIO)
 171                         return r;
 172
 173                 user = NULL;
 174         } else
 175                 user = hashmap_get(m->users, UID_TO_PTR(uid));
 176
 177         if (!user)
 178                 return sd_bus_error_setf(error, BUS_ERROR_NO_USER_FOR_PID,
 179                                          "Caller does not belong to any logged in or lingering user");
 180
 181         *ret = user;
 182         return 0;
 183 }
 184
 185 int manager_get_user_from_creds(Manager *m, sd_bus_message *message, uid_t uid, sd_bus_error *error, User **ret) {
 186         User *user;
 187
 188         assert(m);
 189         assert(ret);
 190
 191         if (!uid_is_valid(uid))
 192                 return get_sender_user(m, message, error, ret);
 193
 194         user = hashmap_get(m->users, UID_TO_PTR(uid));
 195         if (!user)
 196                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_USER,
 197                                          "User ID "UID_FMT" is not logged in or lingering", uid);
 198
 199         *ret = user;
 200         return 0;
 201 }
 202
 203 int manager_get_seat_from_creds(
 204                 Manager *m,
 205                 sd_bus_message *message,
 206                 const char *name,
 207                 sd_bus_error *error,
 208                 Seat **ret) {
 209
 210         Seat *seat;
 211         int r;
 212
 213         assert(m);
 214         assert(ret);
 215
 216         if (SEAT_IS_SELF(name) || SEAT_IS_AUTO(name)) {
 217                 Session *session;
 218
 219                 /* Use these special seat names as session names */
 220                 r = manager_get_session_from_creds(m, message, name, error, &session);
 221                 if (r < 0)
 222                         return r;
 223
 224                 seat = session->seat;
 225                 if (!seat)
 226                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "Session '%s' has no seat.", session->id);
 227         } else {
 228                 seat = hashmap_get(m->seats, name);
 229                 if (!seat)
 230                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "No seat '%s' known", name);
 231         }
 232
 233         *ret = seat;
 234         return 0;
 235 }
 236
 237 static int return_test_polkit(
 238                 sd_bus_message *message,
 239                 const char *action,
 240                 const char **details,
 241                 uid_t good_user,
 242                 sd_bus_error *e) {
 243
 244         const char *result;
 245         bool challenge;
 246         int r;
 247
 248         r = bus_test_polkit(message, action, details, good_user, &challenge, e);
 249         if (r < 0)
 250                 return r;
 251
 252         if (r > 0)
 253                 result = "yes";
 254         else if (challenge)
 255                 result = "challenge";
 256         else
 257                 result = "no";
 258
 259         return sd_bus_reply_method_return(message, "s", result);
 260 }
 261
 262 static int property_get_idle_hint(
 263                 sd_bus *bus,
 264                 const char *path,
 265                 const char *interface,
 266                 const char *property,
 267                 sd_bus_message *reply,
 268                 void *userdata,
 269                 sd_bus_error *error) {
 270
 271         Manager *m = ASSERT_PTR(userdata);
 272
 273         assert(bus);
 274         assert(reply);
 275
 276         return sd_bus_message_append(reply, "b", manager_get_idle_hint(m, NULL) > 0);
 277 }
 278
 279 static int property_get_idle_since_hint(
 280                 sd_bus *bus,
 281                 const char *path,
 282                 const char *interface,
 283                 const char *property,
 284                 sd_bus_message *reply,
 285                 void *userdata,
 286                 sd_bus_error *error) {
 287
 288         Manager *m = ASSERT_PTR(userdata);
 289         dual_timestamp t = DUAL_TIMESTAMP_NULL;
 290
 291         assert(bus);
 292         assert(reply);
 293
 294         manager_get_idle_hint(m, &t);
 295
 296         return sd_bus_message_append(reply, "t", streq(property, "IdleSinceHint") ? t.realtime : t.monotonic);
 297 }
 298
 299 static int property_get_inhibited(
 300                 sd_bus *bus,
 301                 const char *path,
 302                 const char *interface,
 303                 const char *property,
 304                 sd_bus_message *reply,
 305                 void *userdata,
 306                 sd_bus_error *error) {
 307
 308         Manager *m = ASSERT_PTR(userdata);
 309         InhibitWhat w;
 310
 311         assert(bus);
 312         assert(reply);
 313
 314         w = manager_inhibit_what(m, streq(property, "BlockInhibited") ? INHIBIT_BLOCK : INHIBIT_DELAY);
 315
 316         return sd_bus_message_append(reply, "s", inhibit_what_to_string(w));
 317 }
 318
 319 static int property_get_preparing(
 320                 sd_bus *bus,
 321                 const char *path,
 322                 const char *interface,
 323                 const char *property,
 324                 sd_bus_message *reply,
 325                 void *userdata,
 326                 sd_bus_error *error) {
 327
 328         Manager *m = ASSERT_PTR(userdata);
 329         bool b = false;
 330
 331         assert(bus);
 332         assert(reply);
 333
 334         if (m->delayed_action) {
 335                 if (streq(property, "PreparingForShutdown"))
 336                         b = m->delayed_action->inhibit_what & INHIBIT_SHUTDOWN;
 337                 else
 338                         b = m->delayed_action->inhibit_what & INHIBIT_SLEEP;
 339         }
 340
 341         return sd_bus_message_append(reply, "b", b);
 342 }
 343
 344 static int property_get_sleep_operations(
 345                 sd_bus *bus,
 346                 const char *path,
 347                 const char *interface,
 348                 const char *property,
 349                 sd_bus_message *reply,
 350                 void *userdata,
 351                 sd_bus_error *error) {
 352
 353         Manager *m = ASSERT_PTR(userdata);
 354         _cleanup_strv_free_ char **actions = NULL;
 355         int r;
 356
 357         assert(bus);
 358         assert(reply);
 359
 360         r = handle_action_get_enabled_sleep_actions(m->handle_action_sleep_mask, &actions);
 361         if (r < 0)
 362                 return r;
 363
 364         return sd_bus_message_append_strv(reply, actions);
 365 }
 366
 367 static int property_get_scheduled_shutdown(
 368                 sd_bus *bus,
 369                 const char *path,
 370                 const char *interface,
 371                 const char *property,
 372                 sd_bus_message *reply,
 373                 void *userdata,
 374                 sd_bus_error *error) {
 375
 376         Manager *m = ASSERT_PTR(userdata);
 377         int r;
 378
 379         assert(bus);
 380         assert(reply);
 381
 382         r = sd_bus_message_open_container(reply, 'r', "st");
 383         if (r < 0)
 384                 return r;
 385
 386         r = sd_bus_message_append(
 387                         reply, "st",
 388                         handle_action_to_string(m->scheduled_shutdown_action),
 389                         m->scheduled_shutdown_timeout);
 390         if (r < 0)
 391                 return r;
 392
 393         return sd_bus_message_close_container(reply);
 394 }
 395
 396 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_handle_action, handle_action, HandleAction);
 397 static BUS_DEFINE_PROPERTY_GET(property_get_docked, "b", Manager, manager_is_docked_or_external_displays);
 398 static BUS_DEFINE_PROPERTY_GET(property_get_lid_closed, "b", Manager, manager_is_lid_closed);
 399 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_on_external_power, "b", manager_is_on_external_power());
 400 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_compat_user_tasks_max, "t", CGROUP_LIMIT_MAX);
 401 static BUS_DEFINE_PROPERTY_GET_REF(property_get_hashmap_size, "t", Hashmap *, (uint64_t) hashmap_size);
 402
 403 static int method_get_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 404         _cleanup_free_ char *p = NULL;
 405         Manager *m = ASSERT_PTR(userdata);
 406         const char *name;
 407         Session *session;
 408         int r;
 409
 410         assert(message);
 411
 412         r = sd_bus_message_read(message, "s", &name);
 413         if (r < 0)
 414                 return r;
 415
 416         r = manager_get_session_from_creds(m, message, name, error, &session);
 417         if (r < 0)
 418                 return r;
 419
 420         p = session_bus_path(session);
 421         if (!p)
 422                 return -ENOMEM;
 423
 424         return sd_bus_reply_method_return(message, "o", p);
 425 }
 426
 427 /* Get login session of a process.  This is not what you are looking for these days,
 428  * as apps may instead belong to a user service unit.  This includes terminal
 429  * emulators and hence command-line apps. */
 430 static int method_get_session_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 431         Manager *m = ASSERT_PTR(userdata);
 432         _cleanup_free_ char *p = NULL;
 433         Session *session = NULL;
 434         pid_t pid;
 435         int r;
 436
 437         assert(message);
 438
 439         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 440
 441         r = sd_bus_message_read(message, "u", &pid);
 442         if (r < 0)
 443                 return r;
 444         if (pid < 0)
 445                 return -EINVAL;
 446
 447         if (pid == 0) {
 448                 r = manager_get_session_from_creds(m, message, NULL, error, &session);
 449                 if (r < 0)
 450                         return r;
 451         } else {
 452                 r = manager_get_session_by_pidref(m, &PIDREF_MAKE_FROM_PID(pid), &session);
 453                 if (r < 0)
 454                         return r;
 455
 456                 if (!session)
 457                         return sd_bus_error_setf(error, BUS_ERROR_NO_SESSION_FOR_PID,
 458                                                  "PID "PID_FMT" does not belong to any known session", pid);
 459         }
 460
 461         p = session_bus_path(session);
 462         if (!p)
 463                 return -ENOMEM;
 464
 465         return sd_bus_reply_method_return(message, "o", p);
 466 }
 467
 468 static int method_get_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 469         _cleanup_free_ char *p = NULL;
 470         Manager *m = ASSERT_PTR(userdata);
 471         uint32_t uid;
 472         User *user;
 473         int r;
 474
 475         assert(message);
 476
 477         r = sd_bus_message_read(message, "u", &uid);
 478         if (r < 0)
 479                 return r;
 480
 481         r = manager_get_user_from_creds(m, message, uid, error, &user);
 482         if (r < 0)
 483                 return r;
 484
 485         p = user_bus_path(user);
 486         if (!p)
 487                 return -ENOMEM;
 488
 489         return sd_bus_reply_method_return(message, "o", p);
 490 }
 491
 492 static int method_get_user_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 493         _cleanup_free_ char *p = NULL;
 494         Manager *m = ASSERT_PTR(userdata);
 495         User *user = NULL;
 496         pid_t pid;
 497         int r;
 498
 499         assert(message);
 500
 501         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 502
 503         r = sd_bus_message_read(message, "u", &pid);
 504         if (r < 0)
 505                 return r;
 506         if (pid < 0)
 507                 return -EINVAL;
 508
 509         if (pid == 0) {
 510                 r = manager_get_user_from_creds(m, message, UID_INVALID, error, &user);
 511                 if (r < 0)
 512                         return r;
 513         } else {
 514                 r = manager_get_user_by_pid(m, pid, &user);
 515                 if (r < 0)
 516                         return r;
 517                 if (!user)
 518                         return sd_bus_error_setf(error, BUS_ERROR_NO_USER_FOR_PID,
 519                                                  "PID "PID_FMT" does not belong to any logged in user or lingering user",
 520                                                  pid);
 521         }
 522
 523         p = user_bus_path(user);
 524         if (!p)
 525                 return -ENOMEM;
 526
 527         return sd_bus_reply_method_return(message, "o", p);
 528 }
 529
 530 static int method_get_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 531         _cleanup_free_ char *p = NULL;
 532         Manager *m = ASSERT_PTR(userdata);
 533         const char *name;
 534         Seat *seat;
 535         int r;
 536
 537         assert(message);
 538
 539         r = sd_bus_message_read(message, "s", &name);
 540         if (r < 0)
 541                 return r;
 542
 543         r = manager_get_seat_from_creds(m, message, name, error, &seat);
 544         if (r < 0)
 545                 return r;
 546
 547         p = seat_bus_path(seat);
 548         if (!p)
 549                 return -ENOMEM;
 550
 551         return sd_bus_reply_method_return(message, "o", p);
 552 }
 553
 554 static int method_list_sessions(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 555         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 556         Manager *m = ASSERT_PTR(userdata);
 557         Session *session;
 558         int r;
 559
 560         assert(message);
 561
 562         r = sd_bus_message_new_method_return(message, &reply);
 563         if (r < 0)
 564                 return r;
 565
 566         r = sd_bus_message_open_container(reply, 'a', "(susso)");
 567         if (r < 0)
 568                 return r;
 569
 570         HASHMAP_FOREACH(session, m->sessions) {
 571                 _cleanup_free_ char *p = NULL;
 572
 573                 p = session_bus_path(session);
 574                 if (!p)
 575                         return -ENOMEM;
 576
 577                 r = sd_bus_message_append(reply, "(susso)",
 578                                           session->id,
 579                                           (uint32_t) session->user->user_record->uid,
 580                                           session->user->user_record->user_name,
 581                                           session->seat ? session->seat->id : "",
 582                                           p);
 583                 if (r < 0)
 584                         return r;
 585         }
 586
 587         r = sd_bus_message_close_container(reply);
 588         if (r < 0)
 589                 return r;
 590
 591         return sd_bus_send(NULL, reply, NULL);
 592 }
 593
 594 static int method_list_users(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 595         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 596         Manager *m = ASSERT_PTR(userdata);
 597         User *user;
 598         int r;
 599
 600         assert(message);
 601
 602         r = sd_bus_message_new_method_return(message, &reply);
 603         if (r < 0)
 604                 return r;
 605
 606         r = sd_bus_message_open_container(reply, 'a', "(uso)");
 607         if (r < 0)
 608                 return r;
 609
 610         HASHMAP_FOREACH(user, m->users) {
 611                 _cleanup_free_ char *p = NULL;
 612
 613                 p = user_bus_path(user);
 614                 if (!p)
 615                         return -ENOMEM;
 616
 617                 r = sd_bus_message_append(reply, "(uso)",
 618                                           (uint32_t) user->user_record->uid,
 619                                           user->user_record->user_name,
 620                                           p);
 621                 if (r < 0)
 622                         return r;
 623         }
 624
 625         r = sd_bus_message_close_container(reply);
 626         if (r < 0)
 627                 return r;
 628
 629         return sd_bus_send(NULL, reply, NULL);
 630 }
 631
 632 static int method_list_seats(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 633         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 634         Manager *m = ASSERT_PTR(userdata);
 635         Seat *seat;
 636         int r;
 637
 638         assert(message);
 639
 640         r = sd_bus_message_new_method_return(message, &reply);
 641         if (r < 0)
 642                 return r;
 643
 644         r = sd_bus_message_open_container(reply, 'a', "(so)");
 645         if (r < 0)
 646                 return r;
 647
 648         HASHMAP_FOREACH(seat, m->seats) {
 649                 _cleanup_free_ char *p = NULL;
 650
 651                 p = seat_bus_path(seat);
 652                 if (!p)
 653                         return -ENOMEM;
 654
 655                 r = sd_bus_message_append(reply, "(so)", seat->id, p);
 656                 if (r < 0)
 657                         return r;
 658         }
 659
 660         r = sd_bus_message_close_container(reply);
 661         if (r < 0)
 662                 return r;
 663
 664         return sd_bus_send(NULL, reply, NULL);
 665 }
 666
 667 static int method_list_inhibitors(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 668         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 669         Manager *m = ASSERT_PTR(userdata);
 670         Inhibitor *inhibitor;
 671         int r;
 672
 673         assert(message);
 674
 675         r = sd_bus_message_new_method_return(message, &reply);
 676         if (r < 0)
 677                 return r;
 678
 679         r = sd_bus_message_open_container(reply, 'a', "(ssssuu)");
 680         if (r < 0)
 681                 return r;
 682
 683         HASHMAP_FOREACH(inhibitor, m->inhibitors) {
 684
 685                 r = sd_bus_message_append(reply, "(ssssuu)",
 686                                           strempty(inhibit_what_to_string(inhibitor->what)),
 687                                           strempty(inhibitor->who),
 688                                           strempty(inhibitor->why),
 689                                           strempty(inhibit_mode_to_string(inhibitor->mode)),
 690                                           (uint32_t) inhibitor->uid,
 691                                           (uint32_t) inhibitor->pid.pid);
 692                 if (r < 0)
 693                         return r;
 694         }
 695
 696         r = sd_bus_message_close_container(reply);
 697         if (r < 0)
 698                 return r;
 699
 700         return sd_bus_send(NULL, reply, NULL);
 701 }
 702
 703 static int create_session(
 704                 sd_bus_message *message,
 705                 void *userdata,
 706                 sd_bus_error *error,
 707                 uid_t uid,
 708                 pid_t pid,
 709                 int pidfd,
 710                 const char *service,
 711                 const char *type,
 712                 const char *class,
 713                 const char *desktop,
 714                 const char *cseat,
 715                 uint32_t vtnr,
 716                 const char *tty,
 717                 const char *display,
 718                 int remote,
 719                 const char *remote_user,
 720                 const char *remote_host,
 721                 uint64_t flags) {
 722
 723         _cleanup_(pidref_done) PidRef leader = PIDREF_NULL;
 724         Manager *m = ASSERT_PTR(userdata);
 725         _cleanup_free_ char *id = NULL;
 726         Session *session = NULL;
 727         uint32_t audit_id = 0;
 728         User *user = NULL;
 729         Seat *seat = NULL;
 730         SessionType t;
 731         SessionClass c;
 732         int r;
 733
 734         assert(message);
 735
 736         if (!uid_is_valid(uid))
 737                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid UID");
 738
 739         if (flags != 0)
 740                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Flags must be zero.");
 741
 742         if (pidfd >= 0) {
 743                 r = pidref_set_pidfd(&leader, pidfd);
 744                 if (r < 0)
 745                         return r;
 746         } else if (pid == 0) {
 747                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 748                 pid_t p;
 749
 750                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 751                 if (r < 0)
 752                         return r;
 753
 754                 r = sd_bus_creds_get_pid(creds, &p);
 755                 if (r < 0)
 756                         return r;
 757
 758                 r = pidref_set_pid(&leader, p);
 759                 if (r < 0)
 760                         return r;
 761         } else {
 762                 assert(pid > 0);
 763
 764                 r = pidref_set_pid(&leader, pid);
 765                 if (r < 0)
 766                         return r;
 767         }
 768
 769         if (leader.pid == 1 || leader.pid == getpid_cached())
 770                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid leader PID");
 771
 772         if (isempty(type))
 773                 t = _SESSION_TYPE_INVALID;
 774         else {
 775                 t = session_type_from_string(type);
 776                 if (t < 0)
 777                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 778                                                  "Invalid session type %s", type);
 779         }
 780
 781         if (isempty(class))
 782                 c = _SESSION_CLASS_INVALID;
 783         else {
 784                 c = session_class_from_string(class);
 785                 if (c < 0)
 786                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 787                                                  "Invalid session class %s", class);
 788         }
 789
 790         if (isempty(desktop))
 791                 desktop = NULL;
 792         else {
 793                 if (!string_is_safe(desktop))
 794                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 795                                                  "Invalid desktop string %s", desktop);
 796         }
 797
 798         if (isempty(cseat))
 799                 seat = NULL;
 800         else {
 801                 seat = hashmap_get(m->seats, cseat);
 802                 if (!seat)
 803                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT,
 804                                                  "No seat '%s' known", cseat);
 805         }
 806
 807         if (tty_is_vc(tty)) {
 808                 int v;
 809
 810                 if (!seat)
 811                         seat = m->seat0;
 812                 else if (seat != m->seat0)
 813                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 814                                                  "TTY %s is virtual console but seat %s is not seat0", tty, seat->id);
 815
 816                 v = vtnr_from_tty(tty);
 817                 if (v <= 0)
 818                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 819                                                  "Cannot determine VT number from virtual console TTY %s", tty);
 820
 821                 if (vtnr == 0)
 822                         vtnr = (uint32_t) v;
 823                 else if (vtnr != (uint32_t) v)
 824                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 825                                                  "Specified TTY and VT number do not match");
 826
 827         } else if (tty_is_console(tty)) {
 828
 829                 if (!seat)
 830                         seat = m->seat0;
 831                 else if (seat != m->seat0)
 832                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 833                                                  "Console TTY specified but seat is not seat0");
 834
 835                 if (vtnr != 0)
 836                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 837                                                  "Console TTY specified but VT number is not 0");
 838         }
 839
 840         if (seat) {
 841                 if (seat_has_vts(seat)) {
 842                         if (vtnr <= 0 || vtnr > 63)
 843                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 844                                                          "VT number out of range");
 845                 } else {
 846                         if (vtnr != 0)
 847                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 848                                                          "Seat has no VTs but VT number not 0");
 849                 }
 850         }
 851
 852         if (t == _SESSION_TYPE_INVALID) {
 853                 if (!isempty(display))
 854                         t = SESSION_X11;
 855                 else if (!isempty(tty))
 856                         t = SESSION_TTY;
 857                 else
 858                         t = SESSION_UNSPECIFIED;
 859         }
 860
 861         if (c == _SESSION_CLASS_INVALID) {
 862                 if (t == SESSION_UNSPECIFIED)
 863                         c = SESSION_BACKGROUND;
 864                 else
 865                         c = SESSION_USER;
 866         }
 867
 868         /* Check if we are already in a logind session, and if so refuse. */
 869         r = manager_get_session_by_pidref(m, &leader, /* ret_session= */ NULL);
 870         if (r < 0)
 871                 return r;
 872         if (r > 0)
 873                 return sd_bus_error_setf(error, BUS_ERROR_SESSION_BUSY,
 874                                          "Already running in a session or user slice");
 875
 876         /* Old gdm and lightdm start the user-session on the same VT as the greeter session. But they destroy
 877          * the greeter session after the user-session and want the user-session to take over the VT. We need
 878          * to support this for backwards-compatibility, so make sure we allow new sessions on a VT that a
 879          * greeter is running on. Furthermore, to allow re-logins, we have to allow a greeter to take over a
 880          * used VT for the exact same reasons. */
 881         if (c != SESSION_GREETER &&
 882             vtnr > 0 &&
 883             vtnr < MALLOC_ELEMENTSOF(m->seat0->positions) &&
 884             m->seat0->positions[vtnr] &&
 885             m->seat0->positions[vtnr]->class != SESSION_GREETER)
 886                 return sd_bus_error_set(error, BUS_ERROR_SESSION_BUSY, "Already occupied by a session");
 887
 888         if (hashmap_size(m->sessions) >= m->sessions_max)
 889                 return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED,
 890                                          "Maximum number of sessions (%" PRIu64 ") reached, refusing further sessions.",
 891                                          m->sessions_max);
 892
 893         (void) audit_session_from_pid(leader.pid, &audit_id);
 894         if (audit_session_is_valid(audit_id)) {
 895                 /* Keep our session IDs and the audit session IDs in sync */
 896
 897                 if (asprintf(&id, "%"PRIu32, audit_id) < 0)
 898                         return -ENOMEM;
 899
 900                 /* Wut? There's already a session by this name and we didn't find it above? Weird, then let's
 901                  * not trust the audit data and let's better register a new ID */
 902                 if (hashmap_contains(m->sessions, id)) {
 903                         log_warning("Existing logind session ID %s used by new audit session, ignoring.", id);
 904                         audit_id = AUDIT_SESSION_INVALID;
 905                         id = mfree(id);
 906                 }
 907         }
 908
 909         if (!id) {
 910                 do {
 911                         id = mfree(id);
 912
 913                         if (asprintf(&id, "c%" PRIu64, ++m->session_counter) < 0)
 914                                 return -ENOMEM;
 915
 916                 } while (hashmap_contains(m->sessions, id));
 917         }
 918
 919         /* The generated names should not clash with 'auto' or 'self' */
 920         assert(!SESSION_IS_SELF(id));
 921         assert(!SESSION_IS_AUTO(id));
 922
 923         /* If we are not watching utmp already, try again */
 924         manager_reconnect_utmp(m);
 925
 926         r = manager_add_user_by_uid(m, uid, &user);
 927         if (r < 0)
 928                 goto fail;
 929
 930         r = manager_add_session(m, id, &session);
 931         if (r < 0)
 932                 goto fail;
 933
 934         session_set_user(session, user);
 935         r = session_set_leader_consume(session, TAKE_PIDREF(leader));
 936         if (r < 0)
 937                 goto fail;
 938
 939         session->original_type = session->type = t;
 940         session->remote = remote;
 941         session->vtnr = vtnr;
 942         session->class = c;
 943
 944         /* Once the first session that is of a pinning class shows up we'll change the GC mode for the user
 945          * from USER_GC_BY_ANY to USER_GC_BY_PIN, so that the user goes away once the last pinning session
 946          * goes away. Background: we want that user@.service – when started manually – remains around (which
 947          * itself is a non-pinning session), but gets stopped when the last pinning session goes away. */
 948
 949         if (SESSION_CLASS_PIN_USER(c))
 950                 user->gc_mode = USER_GC_BY_PIN;
 951
 952         if (!isempty(tty)) {
 953                 session->tty = strdup(tty);
 954                 if (!session->tty) {
 955                         r = -ENOMEM;
 956                         goto fail;
 957                 }
 958
 959                 session->tty_validity = TTY_FROM_PAM;
 960         }
 961
 962         if (!isempty(display)) {
 963                 session->display = strdup(display);
 964                 if (!session->display) {
 965                         r = -ENOMEM;
 966                         goto fail;
 967                 }
 968         }
 969
 970         if (!isempty(remote_user)) {
 971                 session->remote_user = strdup(remote_user);
 972                 if (!session->remote_user) {
 973                         r = -ENOMEM;
 974                         goto fail;
 975                 }
 976         }
 977
 978         if (!isempty(remote_host)) {
 979                 session->remote_host = strdup(remote_host);
 980                 if (!session->remote_host) {
 981                         r = -ENOMEM;
 982                         goto fail;
 983                 }
 984         }
 985
 986         if (!isempty(service)) {
 987                 session->service = strdup(service);
 988                 if (!session->service) {
 989                         r = -ENOMEM;
 990                         goto fail;
 991                 }
 992         }
 993
 994         if (!isempty(desktop)) {
 995                 session->desktop = strdup(desktop);
 996                 if (!session->desktop) {
 997                         r = -ENOMEM;
 998                         goto fail;
 999                 }
1000         }
1001
1002         if (seat) {
1003                 r = seat_attach_session(seat, session);
1004                 if (r < 0)
1005                         goto fail;
1006         }
1007
1008         r = sd_bus_message_enter_container(message, 'a', "(sv)");
1009         if (r < 0)
1010                 goto fail;
1011
1012         r = session_start(session, message, error);
1013         if (r < 0)
1014                 goto fail;
1015
1016         r = sd_bus_message_exit_container(message);
1017         if (r < 0)
1018                 goto fail;
1019
1020         session->create_message = sd_bus_message_ref(message);
1021
1022         /* Now call into session_send_create_reply(), which will reply to this method call for us. Or it
1023          * won't – in case we just spawned a session scope and/or user service manager, and they aren't ready
1024          * yet. We'll call session_create_reply() again once the session scope or the user service manager is
1025          * ready, where the function will check again if a reply is then ready to be sent, and then do so if
1026          * all is complete - or wait again. */
1027         r = session_send_create_reply(session, /* error= */ NULL);
1028         if (r < 0)
1029                 return r;
1030
1031         return 1;
1032
1033 fail:
1034         if (session)
1035                 session_add_to_gc_queue(session);
1036
1037         if (user)
1038                 user_add_to_gc_queue(user);
1039
1040         return r;
1041 }
1042
1043 static int method_create_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1044         const char *service, *type, *class, *cseat, *tty, *display, *remote_user, *remote_host, *desktop;
1045         pid_t leader;
1046         uid_t uid;
1047         int remote;
1048         uint32_t vtnr = 0;
1049         int r;
1050
1051         assert(message);
1052
1053         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
1054         assert_cc(sizeof(uid_t) == sizeof(uint32_t));
1055
1056         r = sd_bus_message_read(message,
1057                                 "uusssssussbss",
1058                                 &uid,
1059                                 &leader,
1060                                 &service,
1061                                 &type,
1062                                 &class,
1063                                 &desktop,
1064                                 &cseat,
1065                                 &vtnr,
1066                                 &tty,
1067                                 &display,
1068                                 &remote,
1069                                 &remote_user,
1070                                 &remote_host);
1071         if (r < 0)
1072                 return r;
1073
1074         return create_session(
1075                         message,
1076                         userdata,
1077                         error,
1078                         uid,
1079                         leader,
1080                         /* pidfd = */ -EBADF,
1081                         service,
1082                         type,
1083                         class,
1084                         desktop,
1085                         cseat,
1086                         vtnr,
1087                         tty,
1088                         display,
1089                         remote,
1090                         remote_user,
1091                         remote_host,
1092                         /* flags = */ 0);
1093 }
1094
1095 static int method_create_session_pidfd(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1096         const char *service, *type, *class, *cseat, *tty, *display, *remote_user, *remote_host, *desktop;
1097         int leaderfd = -EBADF;
1098         uid_t uid;
1099         int remote;
1100         uint32_t vtnr = 0;
1101         uint64_t flags;
1102         int r;
1103
1104         r = sd_bus_message_read(message,
1105                                 "uhsssssussbsst",
1106                                 &uid,
1107                                 &leaderfd,
1108                                 &service,
1109                                 &type,
1110                                 &class,
1111                                 &desktop,
1112                                 &cseat,
1113                                 &vtnr,
1114                                 &tty,
1115                                 &display,
1116                                 &remote,
1117                                 &remote_user,
1118                                 &remote_host,
1119                                 &flags);
1120         if (r < 0)
1121                 return r;
1122
1123         return create_session(
1124                         message,
1125                         userdata,
1126                         error,
1127                         uid,
1128                         /* pid = */ 0,
1129                         leaderfd,
1130                         service,
1131                         type,
1132                         class,
1133                         desktop,
1134                         cseat,
1135                         vtnr,
1136                         tty,
1137                         display,
1138                         remote,
1139                         remote_user,
1140                         remote_host,
1141                         flags);
1142 }
1143
1144 static int method_release_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1145         Manager *m = ASSERT_PTR(userdata);
1146         Session *session;
1147         const char *name;
1148         int r;
1149
1150         assert(message);
1151
1152         r = sd_bus_message_read(message, "s", &name);
1153         if (r < 0)
1154                 return r;
1155
1156         r = manager_get_session_from_creds(m, message, name, error, &session);
1157         if (r < 0)
1158                 return r;
1159
1160         r = session_release(session);
1161         if (r < 0)
1162                 return r;
1163
1164         return sd_bus_reply_method_return(message, NULL);
1165 }
1166
1167 static int method_activate_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1168         Manager *m = ASSERT_PTR(userdata);
1169         Session *session;
1170         const char *name;
1171         int r;
1172
1173         assert(message);
1174
1175         r = sd_bus_message_read(message, "s", &name);
1176         if (r < 0)
1177                 return r;
1178
1179         r = manager_get_session_from_creds(m, message, name, error, &session);
1180         if (r < 0)
1181                 return r;
1182
1183         /* PolicyKit is done by bus_session_method_activate() */
1184
1185         return bus_session_method_activate(message, session, error);
1186 }
1187
1188 static int method_activate_session_on_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1189         const char *session_name, *seat_name;
1190         Manager *m = ASSERT_PTR(userdata);
1191         Session *session;
1192         Seat *seat;
1193         int r;
1194
1195         assert(message);
1196
1197         /* Same as ActivateSession() but refuses to work if the seat doesn't match */
1198
1199         r = sd_bus_message_read(message, "ss", &session_name, &seat_name);
1200         if (r < 0)
1201                 return r;
1202
1203         r = manager_get_session_from_creds(m, message, session_name, error, &session);
1204         if (r < 0)
1205                 return r;
1206
1207         r = manager_get_seat_from_creds(m, message, seat_name, error, &seat);
1208         if (r < 0)
1209                 return r;
1210
1211         if (session->seat != seat)
1212                 return sd_bus_error_setf(error, BUS_ERROR_SESSION_NOT_ON_SEAT,
1213                                          "Session %s not on seat %s", session_name, seat_name);
1214
1215         r = check_polkit_chvt(message, m, error);
1216         if (r < 0)
1217                 return r;
1218         if (r == 0)
1219                 return 1; /* Will call us back */
1220
1221         r = session_activate(session);
1222         if (r < 0)
1223                 return r;
1224
1225         return sd_bus_reply_method_return(message, NULL);
1226 }
1227
1228 static int method_lock_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1229         Manager *m = ASSERT_PTR(userdata);
1230         Session *session;
1231         const char *name;
1232         int r;
1233
1234         assert(message);
1235
1236         r = sd_bus_message_read(message, "s", &name);
1237         if (r < 0)
1238                 return r;
1239
1240         r = manager_get_session_from_creds(m, message, name, error, &session);
1241         if (r < 0)
1242                 return r;
1243
1244         return bus_session_method_lock(message, session, error);
1245 }
1246
1247 static int method_lock_sessions(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1248         Manager *m = ASSERT_PTR(userdata);
1249         int r;
1250
1251         assert(message);
1252
1253         r = bus_verify_polkit_async(
1254                         message,
1255                         "org.freedesktop.login1.lock-sessions",
1256                         /* details= */ NULL,
1257                         &m->polkit_registry,
1258                         error);
1259         if (r < 0)
1260                 return r;
1261         if (r == 0)
1262                 return 1; /* Will call us back */
1263
1264         r = session_send_lock_all(m, streq(sd_bus_message_get_member(message), "LockSessions"));
1265         if (r < 0)
1266                 return r;
1267
1268         return sd_bus_reply_method_return(message, NULL);
1269 }
1270
1271 static int method_kill_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1272         const char *name;
1273         Manager *m = ASSERT_PTR(userdata);
1274         Session *session;
1275         int r;
1276
1277         assert(message);
1278
1279         r = sd_bus_message_read(message, "s", &name);
1280         if (r < 0)
1281                 return r;
1282
1283         r = manager_get_session_from_creds(m, message, name, error, &session);
1284         if (r < 0)
1285                 return r;
1286
1287         return bus_session_method_kill(message, session, error);
1288 }
1289
1290 static int method_kill_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1291         Manager *m = ASSERT_PTR(userdata);
1292         uint32_t uid;
1293         User *user;
1294         int r;
1295
1296         assert(message);
1297
1298         r = sd_bus_message_read(message, "u", &uid);
1299         if (r < 0)
1300                 return r;
1301
1302         r = manager_get_user_from_creds(m, message, uid, error, &user);
1303         if (r < 0)
1304                 return r;
1305
1306         return bus_user_method_kill(message, user, error);
1307 }
1308
1309 static int method_terminate_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1310         Manager *m = ASSERT_PTR(userdata);
1311         const char *name;
1312         Session *session;
1313         int r;
1314
1315         assert(message);
1316
1317         r = sd_bus_message_read(message, "s", &name);
1318         if (r < 0)
1319                 return r;
1320
1321         r = manager_get_session_from_creds(m, message, name, error, &session);
1322         if (r < 0)
1323                 return r;
1324
1325         return bus_session_method_terminate(message, session, error);
1326 }
1327
1328 static int method_terminate_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1329         Manager *m = ASSERT_PTR(userdata);
1330         uint32_t uid;
1331         User *user;
1332         int r;
1333
1334         assert(message);
1335
1336         r = sd_bus_message_read(message, "u", &uid);
1337         if (r < 0)
1338                 return r;
1339
1340         r = manager_get_user_from_creds(m, message, uid, error, &user);
1341         if (r < 0)
1342                 return r;
1343
1344         return bus_user_method_terminate(message, user, error);
1345 }
1346
1347 static int method_terminate_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1348         Manager *m = ASSERT_PTR(userdata);
1349         const char *name;
1350         Seat *seat;
1351         int r;
1352
1353         assert(message);
1354
1355         r = sd_bus_message_read(message, "s", &name);
1356         if (r < 0)
1357                 return r;
1358
1359         r = manager_get_seat_from_creds(m, message, name, error, &seat);
1360         if (r < 0)
1361                 return r;
1362
1363         return bus_seat_method_terminate(message, seat, error);
1364 }
1365
1366 static int method_set_user_linger(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1367         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
1368         _cleanup_free_ char *cc = NULL;
1369         Manager *m = ASSERT_PTR(userdata);
1370         int r, b, interactive;
1371         struct passwd *pw;
1372         const char *path;
1373         uint32_t uid, auth_uid;
1374
1375         assert(message);
1376
1377         r = sd_bus_message_read(message, "ubb", &uid, &b, &interactive);
1378         if (r < 0)
1379                 return r;
1380
1381         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID |
1382                                                SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds);
1383         if (r < 0)
1384                 return r;
1385
1386         if (!uid_is_valid(uid)) {
1387                 /* Note that we get the owner UID of the session or user unit,
1388                  * not the actual client UID here! */
1389                 r = sd_bus_creds_get_owner_uid(creds, &uid);
1390                 if (r < 0)
1391                         return r;
1392         }
1393
1394         /* owner_uid is racy, so for authorization we must use euid */
1395         r = sd_bus_creds_get_euid(creds, &auth_uid);
1396         if (r < 0)
1397                 return r;
1398
1399         errno = 0;
1400         pw = getpwuid(uid);
1401         if (!pw)
1402                 return errno_or_else(ENOENT);
1403
1404         r = bus_verify_polkit_async_full(
1405                         message,
1406                         uid == auth_uid ? "org.freedesktop.login1.set-self-linger" :
1407                                           "org.freedesktop.login1.set-user-linger",
1408                         /* details= */ NULL,
1409                         interactive,
1410                         /* good_user= */ UID_INVALID,
1411                         &m->polkit_registry,
1412                         error);
1413         if (r < 0)
1414                 return r;
1415         if (r == 0)
1416                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1417
1418         (void) mkdir_p_label("/var/lib/systemd", 0755);
1419         r = mkdir_safe_label("/var/lib/systemd/linger", 0755, 0, 0, MKDIR_WARN_MODE);
1420         if (r < 0)
1421                 return r;
1422
1423         cc = cescape(pw->pw_name);
1424         if (!cc)
1425                 return -ENOMEM;
1426
1427         path = strjoina("/var/lib/systemd/linger/", cc);
1428         if (b) {
1429                 User *u;
1430
1431                 r = touch(path);
1432                 if (r < 0)
1433                         return r;
1434
1435                 if (manager_add_user_by_uid(m, uid, &u) >= 0)
1436                         user_start(u);
1437
1438         } else {
1439                 User *u;
1440
1441                 r = unlink(path);
1442                 if (r < 0 && errno != ENOENT)
1443                         return -errno;
1444
1445                 u = hashmap_get(m->users, UID_TO_PTR(uid));
1446                 if (u)
1447                         user_add_to_gc_queue(u);
1448         }
1449
1450         return sd_bus_reply_method_return(message, NULL);
1451 }
1452
1453 static int trigger_device(Manager *m, sd_device *parent) {
1454         _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL;
1455         int r;
1456
1457         assert(m);
1458
1459         r = sd_device_enumerator_new(&e);
1460         if (r < 0)
1461                 return r;
1462
1463         r = sd_device_enumerator_allow_uninitialized(e);
1464         if (r < 0)
1465                 return r;
1466
1467         if (parent) {
1468                 r = sd_device_enumerator_add_match_parent(e, parent);
1469                 if (r < 0)
1470                         return r;
1471         }
1472
1473         FOREACH_DEVICE(e, d) {
1474                 r = sd_device_trigger(d, SD_DEVICE_CHANGE);
1475                 if (r < 0)
1476                         log_device_debug_errno(d, r, "Failed to trigger device, ignoring: %m");
1477         }
1478
1479         return 0;
1480 }
1481
1482 static int attach_device(Manager *m, const char *seat, const char *sysfs, sd_bus_error *error) {
1483         _cleanup_(sd_device_unrefp) sd_device *d = NULL;
1484         _cleanup_free_ char *rule = NULL, *file = NULL;
1485         const char *id_for_seat;
1486         int r;
1487
1488         assert(m);
1489         assert(seat);
1490         assert(sysfs);
1491
1492         r = sd_device_new_from_syspath(&d, sysfs);
1493         if (r < 0)
1494                 return sd_bus_error_set_errnof(error, r, "Failed to open device '%s': %m", sysfs);
1495
1496         if (sd_device_has_current_tag(d, "seat") <= 0)
1497                 return sd_bus_error_set_errnof(error, ENODEV, "Device '%s' lacks 'seat' udev tag.", sysfs);
1498
1499         if (sd_device_get_property_value(d, "ID_FOR_SEAT", &id_for_seat) < 0)
1500                 return sd_bus_error_set_errnof(error, ENODEV, "Device '%s' lacks 'ID_FOR_SEAT' udev property.", sysfs);
1501
1502         if (asprintf(&file, "/etc/udev/rules.d/72-seat-%s.rules", id_for_seat) < 0)
1503                 return -ENOMEM;
1504
1505         if (asprintf(&rule, "TAG==\"seat\", ENV{ID_FOR_SEAT}==\"%s\", ENV{ID_SEAT}=\"%s\"", id_for_seat, seat) < 0)
1506                 return -ENOMEM;
1507
1508         (void) mkdir_p_label("/etc/udev/rules.d", 0755);
1509         r = write_string_file_atomic_label(file, rule);
1510         if (r < 0)
1511                 return r;
1512
1513         return trigger_device(m, d);
1514 }
1515
1516 static int flush_devices(Manager *m) {
1517         _cleanup_closedir_ DIR *d = NULL;
1518
1519         assert(m);
1520
1521         d = opendir("/etc/udev/rules.d");
1522         if (!d) {
1523                 if (errno != ENOENT)
1524                         log_warning_errno(errno, "Failed to open /etc/udev/rules.d: %m");
1525         } else
1526                 FOREACH_DIRENT_ALL(de, d, break) {
1527                         if (!dirent_is_file(de))
1528                                 continue;
1529
1530                         if (!startswith(de->d_name, "72-seat-"))
1531                                 continue;
1532
1533                         if (!endswith(de->d_name, ".rules"))
1534                                 continue;
1535
1536                         if (unlinkat(dirfd(d), de->d_name, 0) < 0)
1537                                 log_warning_errno(errno, "Failed to unlink %s: %m", de->d_name);
1538                 }
1539
1540         return trigger_device(m, NULL);
1541 }
1542
1543 static int method_attach_device(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1544         const char *sysfs, *seat;
1545         Manager *m = ASSERT_PTR(userdata);
1546         int interactive, r;
1547
1548         assert(message);
1549
1550         r = sd_bus_message_read(message, "ssb", &seat, &sysfs, &interactive);
1551         if (r < 0)
1552                 return r;
1553
1554         if (!path_is_normalized(sysfs))
1555                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not normalized", sysfs);
1556         if (!path_startswith(sysfs, "/sys"))
1557                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not in /sys", sysfs);
1558
1559         if (SEAT_IS_SELF(seat) || SEAT_IS_AUTO(seat)) {
1560                 Seat *found;
1561
1562                 r = manager_get_seat_from_creds(m, message, seat, error, &found);
1563                 if (r < 0)
1564                         return r;
1565
1566                 seat = found->id;
1567
1568         } else if (!seat_name_is_valid(seat)) /* Note that a seat does not have to exist yet for this operation to succeed */
1569                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Seat name %s is not valid", seat);
1570
1571         r = bus_verify_polkit_async_full(
1572                         message,
1573                         "org.freedesktop.login1.attach-device",
1574                         /* details= */ NULL,
1575                         interactive,
1576                         /* good_user= */ UID_INVALID,
1577                         &m->polkit_registry,
1578                         error);
1579         if (r < 0)
1580                 return r;
1581         if (r == 0)
1582                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1583
1584         r = attach_device(m, seat, sysfs, error);
1585         if (r < 0)
1586                 return r;
1587
1588         return sd_bus_reply_method_return(message, NULL);
1589 }
1590
1591 static int method_flush_devices(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1592         Manager *m = ASSERT_PTR(userdata);
1593         int interactive, r;
1594
1595         assert(message);
1596
1597         r = sd_bus_message_read(message, "b", &interactive);
1598         if (r < 0)
1599                 return r;
1600
1601         r = bus_verify_polkit_async_full(
1602                         message,
1603                         "org.freedesktop.login1.flush-devices",
1604                         /* details= */ NULL,
1605                         interactive,
1606                         /* good_user= */ UID_INVALID,
1607                         &m->polkit_registry,
1608                         error);
1609         if (r < 0)
1610                 return r;
1611         if (r == 0)
1612                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1613
1614         r = flush_devices(m);
1615         if (r < 0)
1616                 return r;
1617
1618         return sd_bus_reply_method_return(message, NULL);
1619 }
1620
1621 static int have_multiple_sessions(
1622                 Manager *m,
1623                 uid_t uid) {
1624
1625         Session *session;
1626
1627         assert(m);
1628
1629         /* Check for other users' sessions. Greeter sessions do not
1630          * count, and non-login sessions do not count either. */
1631         HASHMAP_FOREACH(session, m->sessions)
1632                 if (session->class == SESSION_USER &&
1633                     session->user->user_record->uid != uid)
1634                         return true;
1635
1636         return false;
1637 }
1638
1639 static int bus_manager_log_shutdown(
1640                 Manager *m,
1641                 const HandleActionData *a) {
1642         assert(m);
1643         assert(a);
1644
1645         const char *message = a->message ?: "System is shutting down";
1646         const char *log_verb = a->log_verb ? strjoina("SHUTDOWN=", a->log_verb) : NULL;
1647
1648         return log_struct(LOG_NOTICE,
1649                           "MESSAGE_ID=%s", a->message_id ?: SD_MESSAGE_SHUTDOWN_STR,
1650                           LOG_MESSAGE("%s%s%s%s.",
1651                                       message,
1652                                       m->wall_message ? " (" : "",
1653                                       strempty(m->wall_message),
1654                                       m->wall_message ? ")" : ""),
1655                           log_verb);
1656 }
1657
1658 static int lid_switch_ignore_handler(sd_event_source *e, uint64_t usec, void *userdata) {
1659         Manager *m = ASSERT_PTR(userdata);
1660
1661         assert(e);
1662
1663         m->lid_switch_ignore_event_source = sd_event_source_unref(m->lid_switch_ignore_event_source);
1664         return 0;
1665 }
1666
1667 int manager_set_lid_switch_ignore(Manager *m, usec_t until) {
1668         int r;
1669
1670         assert(m);
1671
1672         if (until <= now(CLOCK_MONOTONIC))
1673                 return 0;
1674
1675         /* We want to ignore the lid switch for a while after each
1676          * suspend, and after boot-up. Hence let's install a timer for
1677          * this. As long as the event source exists we ignore the lid
1678          * switch. */
1679
1680         if (m->lid_switch_ignore_event_source) {
1681                 usec_t u;
1682
1683                 r = sd_event_source_get_time(m->lid_switch_ignore_event_source, &u);
1684                 if (r < 0)
1685                         return r;
1686
1687                 if (until <= u)
1688                         return 0;
1689
1690                 r = sd_event_source_set_time(m->lid_switch_ignore_event_source, until);
1691         } else
1692                 r = sd_event_add_time(
1693                                 m->event,
1694                                 &m->lid_switch_ignore_event_source,
1695                                 CLOCK_MONOTONIC,
1696                                 until, 0,
1697                                 lid_switch_ignore_handler, m);
1698
1699         return r;
1700 }
1701
1702 static int send_prepare_for(Manager *m, const HandleActionData *a, bool _active) {
1703         int k = 0, r, active = _active;
1704
1705         assert(m);
1706         assert(a);
1707         assert(IN_SET(a->inhibit_what, INHIBIT_SHUTDOWN, INHIBIT_SLEEP));
1708
1709         /* We need to send both old and new signal for backward compatibility. The newer one allows clients
1710          * to know which type of reboot is going to happen, as they might be doing different actions (e.g.:
1711          * on soft-reboot), and it is sent first, so that clients know that if they receive the old one
1712          * first then they don't have to wait for the new one, as it means it's not supported. So, do not
1713          * change the order here, as it is an API. */
1714         if (a->inhibit_what == INHIBIT_SHUTDOWN) {
1715                 k = sd_bus_emit_signal(m->bus,
1716                                        "/org/freedesktop/login1",
1717                                        "org.freedesktop.login1.Manager",
1718                                        "PrepareForShutdownWithMetadata",
1719                                        "ba{sv}",
1720                                        active,
1721                                        1,
1722                                        "type",
1723                                        "s",
1724                                        handle_action_to_string(a->handle));
1725                 if (k < 0)
1726                         log_debug_errno(k, "Failed to emit PrepareForShutdownWithMetadata(): %m");
1727         }
1728
1729         r = sd_bus_emit_signal(m->bus,
1730                                "/org/freedesktop/login1",
1731                                "org.freedesktop.login1.Manager",
1732                                a->inhibit_what == INHIBIT_SHUTDOWN ? "PrepareForShutdown" : "PrepareForSleep",
1733                                "b",
1734                                active);
1735         if (r < 0)
1736                 log_debug_errno(r, "Failed to emit PrepareForShutdown(): %m");
1737
1738         return RET_GATHER(k, r);
1739 }
1740
1741 static int execute_shutdown_or_sleep(
1742                 Manager *m,
1743                 const HandleActionData *a,
1744                 sd_bus_error *error) {
1745
1746         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1747         const char *p;
1748         int r;
1749
1750         assert(m);
1751         assert(a);
1752
1753         if (a->inhibit_what == INHIBIT_SHUTDOWN)
1754                 bus_manager_log_shutdown(m, a);
1755
1756         r = bus_call_method(
1757                         m->bus,
1758                         bus_systemd_mgr,
1759                         "StartUnit",
1760                         error,
1761                         &reply,
1762                         "ss", a->target, "replace-irreversibly");
1763         if (r < 0)
1764                 goto error;
1765
1766         r = sd_bus_message_read(reply, "o", &p);
1767         if (r < 0)
1768                 goto error;
1769
1770         r = free_and_strdup(&m->action_job, p);
1771         if (r < 0)
1772                 goto error;
1773
1774         m->delayed_action = a;
1775
1776         /* Make sure the lid switch is ignored for a while */
1777         manager_set_lid_switch_ignore(m, usec_add(now(CLOCK_MONOTONIC), m->holdoff_timeout_usec));
1778
1779         return 0;
1780
1781 error:
1782         /* Tell people that they now may take a lock again */
1783         (void) send_prepare_for(m, a, false);
1784
1785         return r;
1786 }
1787
1788 int manager_dispatch_delayed(Manager *manager, bool timeout) {
1789         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1790         Inhibitor *offending = NULL;
1791         int r;
1792
1793         assert(manager);
1794
1795         if (!manager->delayed_action || manager->action_job)
1796                 return 0;
1797
1798         if (manager_is_inhibited(manager, manager->delayed_action->inhibit_what, INHIBIT_DELAY, NULL, false, false, 0, &offending)) {
1799                 _cleanup_free_ char *comm = NULL, *u = NULL;
1800
1801                 if (!timeout)
1802                         return 0;
1803
1804                 (void) pidref_get_comm(&offending->pid, &comm);
1805                 u = uid_to_name(offending->uid);
1806
1807                 log_notice("Delay lock is active (UID "UID_FMT"/%s, PID "PID_FMT"/%s) but inhibitor timeout is reached.",
1808                            offending->uid, strna(u),
1809                            offending->pid.pid, strna(comm));
1810         }
1811
1812         /* Actually do the operation */
1813         r = execute_shutdown_or_sleep(manager, manager->delayed_action, &error);
1814         if (r < 0) {
1815                 log_warning("Error during inhibitor-delayed operation (already returned success to client): %s",
1816                             bus_error_message(&error, r));
1817
1818                 manager->delayed_action = NULL;
1819         }
1820
1821         return 1; /* We did some work. */
1822 }
1823
1824 static int manager_inhibit_timeout_handler(
1825                         sd_event_source *s,
1826                         uint64_t usec,
1827                         void *userdata) {
1828
1829         Manager *manager = ASSERT_PTR(userdata);
1830
1831         assert(manager->inhibit_timeout_source == s);
1832
1833         return manager_dispatch_delayed(manager, true);
1834 }
1835
1836 static int delay_shutdown_or_sleep(
1837                 Manager *m,
1838                 const HandleActionData *a) {
1839
1840         int r;
1841
1842         assert(m);
1843         assert(a);
1844
1845         if (m->inhibit_timeout_source) {
1846                 r = sd_event_source_set_time_relative(m->inhibit_timeout_source, m->inhibit_delay_max);
1847                 if (r < 0)
1848                         return log_error_errno(r, "sd_event_source_set_time_relative() failed: %m");
1849
1850                 r = sd_event_source_set_enabled(m->inhibit_timeout_source, SD_EVENT_ONESHOT);
1851                 if (r < 0)
1852                         return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
1853         } else {
1854                 r = sd_event_add_time_relative(
1855                                 m->event,
1856                                 &m->inhibit_timeout_source,
1857                                 CLOCK_MONOTONIC, m->inhibit_delay_max, 0,
1858                                 manager_inhibit_timeout_handler, m);
1859                 if (r < 0)
1860                         return r;
1861         }
1862
1863         m->delayed_action = a;
1864
1865         return 0;
1866 }
1867
1868 int bus_manager_shutdown_or_sleep_now_or_later(
1869                 Manager *m,
1870                 const HandleActionData *a,
1871                 sd_bus_error *error) {
1872
1873         _cleanup_free_ char *load_state = NULL;
1874         bool delayed;
1875         int r;
1876
1877         assert(m);
1878         assert(a);
1879         assert(!m->action_job);
1880
1881         r = unit_load_state(m->bus, a->target, &load_state);
1882         if (r < 0)
1883                 return r;
1884
1885         if (!streq(load_state, "loaded"))
1886                 return log_notice_errno(SYNTHETIC_ERRNO(EACCES),
1887                                         "Unit %s is %s, refusing operation.",
1888                                         a->target, load_state);
1889
1890         /* Tell everybody to prepare for shutdown/sleep */
1891         (void) send_prepare_for(m, a, true);
1892
1893         delayed =
1894                 m->inhibit_delay_max > 0 &&
1895                 manager_is_inhibited(m, a->inhibit_what, INHIBIT_DELAY, NULL, false, false, 0, NULL);
1896
1897         if (delayed)
1898                 /* Shutdown is delayed, keep in mind what we
1899                  * want to do, and start a timeout */
1900                 r = delay_shutdown_or_sleep(m, a);
1901         else
1902                 /* Shutdown is not delayed, execute it
1903                  * immediately */
1904                 r = execute_shutdown_or_sleep(m, a, error);
1905
1906         return r;
1907 }
1908
1909 static int verify_shutdown_creds(
1910                 Manager *m,
1911                 sd_bus_message *message,
1912                 const HandleActionData *a,
1913                 uint64_t flags,
1914                 sd_bus_error *error) {
1915
1916         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
1917         bool multiple_sessions, blocked, interactive;
1918         uid_t uid;
1919         int r;
1920
1921         assert(m);
1922         assert(a);
1923         assert(message);
1924
1925         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
1926         if (r < 0)
1927                 return r;
1928
1929         r = sd_bus_creds_get_euid(creds, &uid);
1930         if (r < 0)
1931                 return r;
1932
1933         r = have_multiple_sessions(m, uid);
1934         if (r < 0)
1935                 return r;
1936
1937         multiple_sessions = r > 0;
1938         blocked = manager_is_inhibited(m, a->inhibit_what, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
1939         interactive = flags & SD_LOGIND_INTERACTIVE;
1940
1941         if (multiple_sessions) {
1942                 r = bus_verify_polkit_async_full(
1943                                 message,
1944                                 a->polkit_action_multiple_sessions,
1945                                 /* details= */ NULL,
1946                                 interactive,
1947                                 /* good_user= */ UID_INVALID,
1948                                 &m->polkit_registry,
1949                                 error);
1950                 if (r < 0)
1951                         return r;
1952                 if (r == 0)
1953                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1954         }
1955
1956         if (blocked) {
1957                 /* We don't check polkit for root here, because you can't be more privileged than root */
1958                 if (uid == 0 && (flags & SD_LOGIND_ROOT_CHECK_INHIBITORS))
1959                         return sd_bus_error_setf(error, SD_BUS_ERROR_ACCESS_DENIED,
1960                                                  "Access denied to root due to active block inhibitor");
1961
1962                 r = bus_verify_polkit_async_full(
1963                                 message,
1964                                 a->polkit_action_ignore_inhibit,
1965                                 /* details= */ NULL,
1966                                 interactive,
1967                                 /* good_user= */ UID_INVALID,
1968                                 &m->polkit_registry,
1969                                 error);
1970                 if (r < 0)
1971                         return r;
1972                 if (r == 0)
1973                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1974         }
1975
1976         if (!multiple_sessions && !blocked) {
1977                 r = bus_verify_polkit_async_full(
1978                                 message,
1979                                 a->polkit_action,
1980                                 /* details= */ NULL,
1981                                 interactive,
1982                                 /* good_user= */ UID_INVALID,
1983                                 &m->polkit_registry,
1984                                 error);
1985                 if (r < 0)
1986                         return r;
1987                 if (r == 0)
1988                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1989         }
1990
1991         return 0;
1992 }
1993
1994 static int setup_wall_message_timer(Manager *m, sd_bus_message* message) {
1995         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
1996         int r;
1997
1998         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
1999         if (r >= 0) {
2000                 const char *tty = NULL;
2001
2002                 (void) sd_bus_creds_get_uid(creds, &m->scheduled_shutdown_uid);
2003                 (void) sd_bus_creds_get_tty(creds, &tty);
2004
2005                 r = free_and_strdup(&m->scheduled_shutdown_tty, tty);
2006                 if (r < 0)
2007                         return log_oom();
2008         }
2009
2010         r = manager_setup_wall_message_timer(m);
2011         if (r < 0)
2012                 return r;
2013
2014         return 0;
2015 }
2016
2017 static int method_do_shutdown_or_sleep(
2018                 Manager *m,
2019                 sd_bus_message *message,
2020                 HandleAction action,
2021                 bool with_flags,
2022                 sd_bus_error *error) {
2023
2024         uint64_t flags;
2025         int r;
2026
2027         assert(m);
2028         assert(message);
2029         assert(HANDLE_ACTION_IS_SHUTDOWN(action) || HANDLE_ACTION_IS_SLEEP(action));
2030
2031         if (with_flags) {
2032                 /* New style method: with flags parameter (and interactive bool in the bus message header) */
2033                 r = sd_bus_message_read(message, "t", &flags);
2034                 if (r < 0)
2035                         return r;
2036                 if ((flags & ~SD_LOGIND_SHUTDOWN_AND_SLEEP_FLAGS_PUBLIC) != 0)
2037                         return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS,
2038                                                 "Invalid flags parameter");
2039
2040                 if (FLAGS_SET(flags, (SD_LOGIND_REBOOT_VIA_KEXEC|SD_LOGIND_SOFT_REBOOT)))
2041                         return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS,
2042                                                 "Both reboot via kexec and soft reboot selected, which is not supported");
2043
2044                 if (action != HANDLE_REBOOT) {
2045                         if (flags & SD_LOGIND_REBOOT_VIA_KEXEC)
2046                                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS,
2047                                                         "Reboot via kexec option is only applicable with reboot operations");
2048                         if ((flags & SD_LOGIND_SOFT_REBOOT) || (flags & SD_LOGIND_SOFT_REBOOT_IF_NEXTROOT_SET_UP))
2049                                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS,
2050                                                         "Soft reboot option is only applicable with reboot operations");
2051                 }
2052         } else {
2053                 /* Old style method: no flags parameter, but interactive bool passed as boolean in
2054                  * payload. Let's convert this argument to the new-style flags parameter for our internal
2055                  * use. */
2056                 int interactive;
2057
2058                 r = sd_bus_message_read(message, "b", &interactive);
2059                 if (r < 0)
2060                         return r;
2061
2062                 flags = interactive ? SD_LOGIND_INTERACTIVE : 0;
2063         }
2064
2065         const HandleActionData *a = NULL;
2066
2067         if ((flags & SD_LOGIND_SOFT_REBOOT) ||
2068             ((flags & SD_LOGIND_SOFT_REBOOT_IF_NEXTROOT_SET_UP) && path_is_os_tree("/run/nextroot") > 0))
2069                 a = handle_action_lookup(HANDLE_SOFT_REBOOT);
2070         else if ((flags & SD_LOGIND_REBOOT_VIA_KEXEC) && kexec_loaded())
2071                 a = handle_action_lookup(HANDLE_KEXEC);
2072
2073         if (action == HANDLE_SLEEP) {
2074                 HandleAction selected;
2075
2076                 selected = handle_action_sleep_select(m->handle_action_sleep_mask);
2077                 if (selected < 0)
2078                         return sd_bus_error_set(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
2079                                                 "None of the configured sleep operations are supported");
2080
2081                 assert_se(a = handle_action_lookup(selected));
2082
2083         } else if (HANDLE_ACTION_IS_SLEEP(action)) {
2084                 SleepSupport support;
2085
2086                 assert_se(a = handle_action_lookup(action));
2087
2088                 assert(a->sleep_operation >= 0);
2089                 assert(a->sleep_operation < _SLEEP_OPERATION_MAX);
2090
2091                 r = sleep_supported_full(a->sleep_operation, &support);
2092                 if (r < 0)
2093                         return r;
2094                 if (r == 0)
2095                         switch (support) {
2096
2097                         case SLEEP_DISABLED:
2098                                 return sd_bus_error_setf(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
2099                                                          "Sleep verb '%s' is disabled by config",
2100                                                          sleep_operation_to_string(a->sleep_operation));
2101
2102                         case SLEEP_NOT_CONFIGURED:
2103                         case SLEEP_STATE_OR_MODE_NOT_SUPPORTED:
2104                         case SLEEP_ALARM_NOT_SUPPORTED:
2105                                 return sd_bus_error_setf(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
2106                                                          "Sleep verb '%s' is not configured or configuration is not supported by kernel",
2107                                                          sleep_operation_to_string(a->sleep_operation));
2108
2109                         case SLEEP_RESUME_NOT_SUPPORTED:
2110                                 return sd_bus_error_set(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
2111                                                         "Not running on EFI and resume= is not set. No available method to resume from hibernation");
2112
2113                         case SLEEP_NOT_ENOUGH_SWAP_SPACE:
2114                                 return sd_bus_error_set(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED,
2115                                                         "Not enough suitable swap space for hibernation available on compatible block devices and file systems");
2116
2117                         default:
2118                                 assert_not_reached();
2119
2120                         }
2121         } else if (!a)
2122                 assert_se(a = handle_action_lookup(action));
2123
2124         r = verify_shutdown_creds(m, message, a, flags, error);
2125         if (r != 0)
2126                 return r;
2127
2128         /* reset case we're shorting a scheduled shutdown */
2129         m->unlink_nologin = false;
2130         reset_scheduled_shutdown(m);
2131
2132         m->scheduled_shutdown_timeout = 0;
2133         m->scheduled_shutdown_action = action;
2134
2135         (void) setup_wall_message_timer(m, message);
2136
2137         r = bus_manager_shutdown_or_sleep_now_or_later(m, a, error);
2138         if (r < 0)
2139                 return r;
2140
2141         return sd_bus_reply_method_return(message, NULL);
2142 }
2143
2144 static int method_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2145         Manager *m = userdata;
2146
2147         return method_do_shutdown_or_sleep(
2148                         m, message,
2149                         HANDLE_POWEROFF,
2150                         sd_bus_message_is_method_call(message, NULL, "PowerOffWithFlags"),
2151                         error);
2152 }
2153
2154 static int method_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2155         Manager *m = userdata;
2156
2157         return method_do_shutdown_or_sleep(
2158                         m, message,
2159                         HANDLE_REBOOT,
2160                         sd_bus_message_is_method_call(message, NULL, "RebootWithFlags"),
2161                         error);
2162 }
2163
2164 static int method_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2165         Manager *m = userdata;
2166
2167         return method_do_shutdown_or_sleep(
2168                         m, message,
2169                         HANDLE_HALT,
2170                         sd_bus_message_is_method_call(message, NULL, "HaltWithFlags"),
2171                         error);
2172 }
2173
2174 static int method_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2175         Manager *m = userdata;
2176
2177         return method_do_shutdown_or_sleep(
2178                         m, message,
2179                         HANDLE_SUSPEND,
2180                         sd_bus_message_is_method_call(message, NULL, "SuspendWithFlags"),
2181                         error);
2182 }
2183
2184 static int method_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2185         Manager *m = userdata;
2186
2187         return method_do_shutdown_or_sleep(
2188                         m, message,
2189                         HANDLE_HIBERNATE,
2190                         sd_bus_message_is_method_call(message, NULL, "HibernateWithFlags"),
2191                         error);
2192 }
2193
2194 static int method_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2195         Manager *m = userdata;
2196
2197         return method_do_shutdown_or_sleep(
2198                         m, message,
2199                         HANDLE_HYBRID_SLEEP,
2200                         sd_bus_message_is_method_call(message, NULL, "HybridSleepWithFlags"),
2201                         error);
2202 }
2203
2204 static int method_suspend_then_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2205         Manager *m = userdata;
2206
2207         return method_do_shutdown_or_sleep(
2208                         m, message,
2209                         HANDLE_SUSPEND_THEN_HIBERNATE,
2210                         sd_bus_message_is_method_call(message, NULL, "SuspendThenHibernateWithFlags"),
2211                         error);
2212 }
2213
2214 static int method_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2215         Manager *m = userdata;
2216
2217         return method_do_shutdown_or_sleep(
2218                         m, message,
2219                         HANDLE_SLEEP,
2220                         /* with_flags = */ true,
2221                         error);
2222 }
2223
2224 static int nologin_timeout_handler(
2225                         sd_event_source *s,
2226                         uint64_t usec,
2227                         void *userdata) {
2228
2229         Manager *m = userdata;
2230
2231         log_info("Creating /run/nologin, blocking further logins...");
2232
2233         m->unlink_nologin =
2234                 create_shutdown_run_nologin_or_warn() >= 0;
2235
2236         return 0;
2237 }
2238
2239 static usec_t nologin_timeout_usec(usec_t elapse) {
2240         /* Issue /run/nologin five minutes before shutdown */
2241         return LESS_BY(elapse, 5 * USEC_PER_MINUTE);
2242 }
2243
2244 void manager_load_scheduled_shutdown(Manager *m) {
2245         _cleanup_fclose_ FILE *f = NULL;
2246         _cleanup_free_ char *usec = NULL,
2247                *warn_wall = NULL,
2248                *mode = NULL,
2249                *wall_message = NULL,
2250                *uid = NULL,
2251                *tty = NULL;
2252         int r;
2253
2254         assert(m);
2255
2256         r = parse_env_file(f, SHUTDOWN_SCHEDULE_FILE,
2257                         "USEC", &usec,
2258                         "WARN_WALL", &warn_wall,
2259                         "MODE", &mode,
2260                         "WALL_MESSAGE", &wall_message,
2261                         "UID", &uid,
2262                         "TTY", &tty);
2263
2264         /* reset will delete the file */
2265         reset_scheduled_shutdown(m);
2266
2267         if (r == -ENOENT)
2268                 return;
2269         if (r < 0)
2270                 return (void) log_debug_errno(r, "Failed to parse " SHUTDOWN_SCHEDULE_FILE ": %m");
2271
2272         HandleAction handle = handle_action_from_string(mode);
2273         if (handle < 0)
2274                 return (void) log_debug_errno(SYNTHETIC_ERRNO(EINVAL), "Failed to parse scheduled shutdown type: %s", mode);
2275
2276         if (!usec)
2277                 return (void) log_debug_errno(SYNTHETIC_ERRNO(EINVAL), "USEC is required");
2278         if (deserialize_usec(usec, &m->scheduled_shutdown_timeout) < 0)
2279                 return;
2280
2281         /* assign parsed type only after we know usec is also valid */
2282         m->scheduled_shutdown_action = handle;
2283
2284         if (warn_wall) {
2285                 r = parse_boolean(warn_wall);
2286                 if (r < 0)
2287                         log_debug_errno(r, "Failed to parse enabling wall messages");
2288                 else
2289                         m->enable_wall_messages = r;
2290         }
2291
2292         if (wall_message) {
2293                 _cleanup_free_ char *unescaped = NULL;
2294                 r = cunescape(wall_message, 0, &unescaped);
2295                 if (r < 0)
2296                         log_debug_errno(r, "Failed to parse wall message: %s", wall_message);
2297                 else
2298                         free_and_replace(m->wall_message, unescaped);
2299         }
2300
2301         if (uid) {
2302                 r = parse_uid(uid, &m->scheduled_shutdown_uid);
2303                 if (r < 0)
2304                         log_debug_errno(r, "Failed to parse wall uid: %s", uid);
2305         }
2306
2307         free_and_replace(m->scheduled_shutdown_tty, tty);
2308
2309         r = manager_setup_shutdown_timers(m);
2310         if (r < 0)
2311                 return reset_scheduled_shutdown(m);
2312
2313         (void) manager_setup_wall_message_timer(m);
2314         (void) update_schedule_file(m);
2315
2316         return;
2317 }
2318
2319 static int update_schedule_file(Manager *m) {
2320         _cleanup_(unlink_and_freep) char *temp_path = NULL;
2321         _cleanup_fclose_ FILE *f = NULL;
2322         int r;
2323
2324         assert(m);
2325         assert(handle_action_valid(m->scheduled_shutdown_action));
2326
2327         r = mkdir_parents_label(SHUTDOWN_SCHEDULE_FILE, 0755);
2328         if (r < 0)
2329                 return log_error_errno(r, "Failed to create shutdown subdirectory: %m");
2330
2331         r = fopen_temporary(SHUTDOWN_SCHEDULE_FILE, &f, &temp_path);
2332         if (r < 0)
2333                 return log_error_errno(r, "Failed to save information about scheduled shutdowns: %m");
2334
2335         (void) fchmod(fileno(f), 0644);
2336
2337         serialize_usec(f, "USEC", m->scheduled_shutdown_timeout);
2338         serialize_item_format(f, "WARN_WALL", "%s", one_zero(m->enable_wall_messages));
2339         serialize_item_format(f, "MODE", "%s", handle_action_to_string(m->scheduled_shutdown_action));
2340         serialize_item_format(f, "UID", UID_FMT, m->scheduled_shutdown_uid);
2341
2342         if (m->scheduled_shutdown_tty)
2343                 serialize_item_format(f, "TTY", "%s", m->scheduled_shutdown_tty);
2344
2345         if (!isempty(m->wall_message)) {
2346                 r = serialize_item_escaped(f, "WALL_MESSAGE", m->wall_message);
2347                 if (r < 0)
2348                         goto fail;
2349         }
2350
2351         r = fflush_and_check(f);
2352         if (r < 0)
2353                 goto fail;
2354
2355         if (rename(temp_path, SHUTDOWN_SCHEDULE_FILE) < 0) {
2356                 r = -errno;
2357                 goto fail;
2358         }
2359
2360         temp_path = mfree(temp_path);
2361         return 0;
2362
2363 fail:
2364         (void) unlink(SHUTDOWN_SCHEDULE_FILE);
2365
2366         return log_error_errno(r, "Failed to write information about scheduled shutdowns: %m");
2367 }
2368
2369 static void reset_scheduled_shutdown(Manager *m) {
2370         assert(m);
2371
2372         m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2373         m->wall_message_timeout_source = sd_event_source_unref(m->wall_message_timeout_source);
2374         m->nologin_timeout_source = sd_event_source_unref(m->nologin_timeout_source);
2375
2376         m->scheduled_shutdown_action = _HANDLE_ACTION_INVALID;
2377         m->scheduled_shutdown_timeout = USEC_INFINITY;
2378         m->scheduled_shutdown_uid = UID_INVALID;
2379         m->scheduled_shutdown_tty = mfree(m->scheduled_shutdown_tty);
2380         m->shutdown_dry_run = false;
2381
2382         if (m->unlink_nologin) {
2383                 (void) unlink_or_warn("/run/nologin");
2384                 m->unlink_nologin = false;
2385         }
2386
2387         (void) unlink(SHUTDOWN_SCHEDULE_FILE);
2388 }
2389
2390 static int manager_scheduled_shutdown_handler(
2391                         sd_event_source *s,
2392                         uint64_t usec,
2393                         void *userdata) {
2394
2395         Manager *m = ASSERT_PTR(userdata);
2396         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
2397         const HandleActionData *a;
2398         int r;
2399
2400         assert_se(a = handle_action_lookup(m->scheduled_shutdown_action));
2401
2402         /* Don't allow multiple jobs being executed at the same time */
2403         if (m->delayed_action) {
2404                 r = -EALREADY;
2405                 log_error("Scheduled shutdown to %s failed: shutdown or sleep operation already in progress", a->target);
2406                 goto error;
2407         }
2408
2409         if (m->shutdown_dry_run) {
2410                 /* We do not process delay inhibitors here.  Otherwise, we
2411                  * would have to be considered "in progress" (like the check
2412                  * above) for some seconds after our admin has seen the final
2413                  * wall message. */
2414
2415                 bus_manager_log_shutdown(m, a);
2416                 log_info("Running in dry run, suppressing action.");
2417                 reset_scheduled_shutdown(m);
2418
2419                 return 0;
2420         }
2421
2422         r = bus_manager_shutdown_or_sleep_now_or_later(m, a, &error);
2423         if (r < 0) {
2424                 log_error_errno(r, "Scheduled shutdown to %s failed: %m", a->target);
2425                 goto error;
2426         }
2427
2428         return 0;
2429
2430 error:
2431         reset_scheduled_shutdown(m);
2432         return r;
2433 }
2434
2435 static int method_schedule_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2436         Manager *m = ASSERT_PTR(userdata);
2437         HandleAction handle;
2438         const HandleActionData *a;
2439         uint64_t elapse;
2440         char *type;
2441         int r;
2442         bool dry_run = false;
2443
2444         assert(message);
2445
2446         r = sd_bus_message_read(message, "st", &type, &elapse);
2447         if (r < 0)
2448                 return r;
2449
2450         if (startswith(type, "dry-")) {
2451                 type += 4;
2452                 dry_run = true;
2453         }
2454
2455         handle = handle_action_from_string(type);
2456         if (!HANDLE_ACTION_IS_SHUTDOWN(handle))
2457                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unsupported shutdown type: %s", type);
2458
2459         assert_se(a = handle_action_lookup(handle));
2460         assert(a->polkit_action);
2461
2462         r = verify_shutdown_creds(m, message, a, 0, error);
2463         if (r != 0)
2464                 return r;
2465
2466         m->scheduled_shutdown_action = handle;
2467         m->shutdown_dry_run = dry_run;
2468         m->scheduled_shutdown_timeout = elapse;
2469
2470         r = manager_setup_shutdown_timers(m);
2471         if (r < 0)
2472                 return r;
2473
2474         r = setup_wall_message_timer(m, message);
2475         if (r >= 0)
2476                 r = update_schedule_file(m);
2477
2478         if (r < 0) {
2479                 reset_scheduled_shutdown(m);
2480                 return r;
2481         }
2482
2483         return sd_bus_reply_method_return(message, NULL);
2484 }
2485
2486 static int manager_setup_shutdown_timers(Manager* m) {
2487         int r;
2488
2489         r = event_reset_time(m->event, &m->scheduled_shutdown_timeout_source,
2490                              CLOCK_REALTIME,
2491                              m->scheduled_shutdown_timeout, 0,
2492                              manager_scheduled_shutdown_handler, m,
2493                              0, "scheduled-shutdown-timeout", true);
2494         if (r < 0)
2495                 goto fail;
2496
2497         r = event_reset_time(m->event, &m->nologin_timeout_source,
2498                              CLOCK_REALTIME,
2499                              nologin_timeout_usec(m->scheduled_shutdown_timeout), 0,
2500                              nologin_timeout_handler, m,
2501                              0, "nologin-timeout", true);
2502         if (r < 0)
2503                 goto fail;
2504
2505         return 0;
2506
2507 fail:
2508         m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2509         m->nologin_timeout_source = sd_event_source_unref(m->nologin_timeout_source);
2510
2511         return r;
2512 }
2513
2514 static int method_cancel_scheduled_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2515         Manager *m = ASSERT_PTR(userdata);
2516         const HandleActionData *a;
2517         bool cancelled;
2518         int r;
2519
2520         assert(message);
2521
2522         cancelled = handle_action_valid(m->scheduled_shutdown_action) && m->scheduled_shutdown_action != HANDLE_IGNORE;
2523         if (!cancelled)
2524                 return sd_bus_reply_method_return(message, "b", false);
2525
2526         assert_se(a = handle_action_lookup(m->scheduled_shutdown_action));
2527         if (!a->polkit_action)
2528                 return sd_bus_error_set(error, SD_BUS_ERROR_AUTH_FAILED, "Unsupported shutdown type");
2529
2530         r = bus_verify_polkit_async(
2531                         message,
2532                         a->polkit_action,
2533                         /* details= */ NULL,
2534                         &m->polkit_registry,
2535                         error);
2536         if (r < 0)
2537                 return r;
2538         if (r == 0)
2539                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2540
2541         if (m->enable_wall_messages) {
2542                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2543                 const char *tty = NULL;
2544                 uid_t uid = 0;
2545
2546                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
2547                 if (r >= 0) {
2548                         (void) sd_bus_creds_get_uid(creds, &uid);
2549                         (void) sd_bus_creds_get_tty(creds, &tty);
2550                 }
2551
2552                 _cleanup_free_ char *username = uid_to_name(uid);
2553
2554                 log_struct(LOG_INFO,
2555                            LOG_MESSAGE("System shutdown has been cancelled"),
2556                            "ACTION=%s", handle_action_to_string(a->handle),
2557                            "MESSAGE_ID=" SD_MESSAGE_SHUTDOWN_CANCELED_STR,
2558                            username ? "OPERATOR=%s" : NULL, username);
2559
2560                 (void) wall("System shutdown has been cancelled",
2561                             username, tty, logind_wall_tty_filter, m);
2562         }
2563
2564         reset_scheduled_shutdown(m);
2565
2566         return sd_bus_reply_method_return(message, "b", true);
2567 }
2568
2569 static int method_can_shutdown_or_sleep(
2570                 Manager *m,
2571                 sd_bus_message *message,
2572                 HandleAction action,
2573                 sd_bus_error *error) {
2574
2575         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2576         bool multiple_sessions, challenge, blocked;
2577         const HandleActionData *a;
2578         const char *result = NULL;
2579         uid_t uid;
2580         int r;
2581
2582         assert(m);
2583         assert(message);
2584         assert(HANDLE_ACTION_IS_SHUTDOWN(action) || HANDLE_ACTION_IS_SLEEP(action));
2585
2586         if (action == HANDLE_SLEEP) {
2587                 HandleAction selected;
2588
2589                 selected = handle_action_sleep_select(m->handle_action_sleep_mask);
2590                 if (selected < 0)
2591                         return sd_bus_reply_method_return(message, "s", "na");
2592
2593                 assert_se(a = handle_action_lookup(selected));
2594
2595         } else if (HANDLE_ACTION_IS_SLEEP(action)) {
2596                 SleepSupport support;
2597
2598                 assert_se(a = handle_action_lookup(action));
2599
2600                 assert(a->sleep_operation >= 0);
2601                 assert(a->sleep_operation < _SLEEP_OPERATION_MAX);
2602
2603                 r = sleep_supported_full(a->sleep_operation, &support);
2604                 if (r < 0)
2605                         return r;
2606                 if (r == 0)
2607                         return sd_bus_reply_method_return(message, "s", support == SLEEP_DISABLED ? "no" : "na");
2608         } else
2609                 assert_se(a = handle_action_lookup(action));
2610
2611         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
2612         if (r < 0)
2613                 return r;
2614
2615         r = sd_bus_creds_get_euid(creds, &uid);
2616         if (r < 0)
2617                 return r;
2618
2619         r = have_multiple_sessions(m, uid);
2620         if (r < 0)
2621                 return r;
2622
2623         multiple_sessions = r > 0;
2624         blocked = manager_is_inhibited(m, a->inhibit_what, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
2625
2626         if (a->target) {
2627                 _cleanup_free_ char *load_state = NULL;
2628
2629                 r = unit_load_state(m->bus, a->target, &load_state);
2630                 if (r < 0)
2631                         return r;
2632
2633                 if (!streq(load_state, "loaded")) {
2634                         result = "no";
2635                         goto finish;
2636                 }
2637         }
2638
2639         if (multiple_sessions) {
2640                 r = bus_test_polkit(
2641                                 message,
2642                                 a->polkit_action_multiple_sessions,
2643                                 /* details= */ NULL,
2644                                 /* good_user= */ UID_INVALID,
2645                                 &challenge,
2646                                 error);
2647                 if (r < 0)
2648                         return r;
2649
2650                 if (r > 0)
2651                         result = "yes";
2652                 else if (challenge)
2653                         result = "challenge";
2654                 else
2655                         result = "no";
2656         }
2657
2658         if (blocked) {
2659                 r = bus_test_polkit(
2660                                 message,
2661                                 a->polkit_action_ignore_inhibit,
2662                                 /* details= */ NULL,
2663                                 /* good_user= */ UID_INVALID,
2664                                 &challenge,
2665                                 error);
2666                 if (r < 0)
2667                         return r;
2668
2669                 if (r > 0) {
2670                         if (!result)
2671                                 result = "yes";
2672                 } else if (challenge) {
2673                         if (!result || streq(result, "yes"))
2674                                 result = "challenge";
2675                 } else
2676                         result = "no";
2677         }
2678
2679         if (!multiple_sessions && !blocked) {
2680                 /* If neither inhibit nor multiple sessions
2681                  * apply then just check the normal policy */
2682
2683                 r = bus_test_polkit(
2684                                 message,
2685                                 a->polkit_action,
2686                                 /* details= */ NULL,
2687                                 /* good_user= */ UID_INVALID,
2688                                 &challenge,
2689                                 error);
2690                 if (r < 0)
2691                         return r;
2692
2693                 if (r > 0)
2694                         result = "yes";
2695                 else if (challenge)
2696                         result = "challenge";
2697                 else
2698                         result = "no";
2699         }
2700
2701  finish:
2702         return sd_bus_reply_method_return(message, "s", result);
2703 }
2704
2705 static int method_can_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2706         Manager *m = userdata;
2707
2708         return method_can_shutdown_or_sleep(m, message, HANDLE_POWEROFF, error);
2709 }
2710
2711 static int method_can_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2712         Manager *m = userdata;
2713
2714         return method_can_shutdown_or_sleep(m, message, HANDLE_REBOOT, error);
2715 }
2716
2717 static int method_can_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2718         Manager *m = userdata;
2719
2720         return method_can_shutdown_or_sleep(m, message, HANDLE_HALT, error);
2721 }
2722
2723 static int method_can_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2724         Manager *m = userdata;
2725
2726         return method_can_shutdown_or_sleep(m, message, HANDLE_SUSPEND, error);
2727 }
2728
2729 static int method_can_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2730         Manager *m = userdata;
2731
2732         return method_can_shutdown_or_sleep(m, message, HANDLE_HIBERNATE, error);
2733 }
2734
2735 static int method_can_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2736         Manager *m = userdata;
2737
2738         return method_can_shutdown_or_sleep(m, message, HANDLE_HYBRID_SLEEP, error);
2739 }
2740
2741 static int method_can_suspend_then_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2742         Manager *m = userdata;
2743
2744         return method_can_shutdown_or_sleep(m, message, HANDLE_SUSPEND_THEN_HIBERNATE, error);
2745 }
2746
2747 static int method_can_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2748         Manager *m = userdata;
2749
2750         return method_can_shutdown_or_sleep(m, message, HANDLE_SLEEP, error);
2751 }
2752
2753 static int property_get_reboot_parameter(
2754                 sd_bus *bus,
2755                 const char *path,
2756                 const char *interface,
2757                 const char *property,
2758                 sd_bus_message *reply,
2759                 void *userdata,
2760                 sd_bus_error *error) {
2761         _cleanup_free_ char *parameter = NULL;
2762         int r;
2763
2764         assert(bus);
2765         assert(reply);
2766         assert(userdata);
2767
2768         r = read_reboot_parameter(&parameter);
2769         if (r < 0)
2770                 return r;
2771
2772         return sd_bus_message_append(reply, "s", parameter);
2773 }
2774
2775 static int method_set_reboot_parameter(
2776                 sd_bus_message *message,
2777                 void *userdata,
2778                 sd_bus_error *error) {
2779
2780         Manager *m = ASSERT_PTR(userdata);
2781         const char *arg;
2782         int r;
2783
2784         assert(message);
2785
2786         r = sd_bus_message_read(message, "s", &arg);
2787         if (r < 0)
2788                 return r;
2789
2790         r = detect_container();
2791         if (r < 0)
2792                 return r;
2793         if (r > 0)
2794                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED,
2795                                          "Reboot parameter not supported in containers, refusing.");
2796
2797         r = bus_verify_polkit_async(
2798                         message,
2799                         "org.freedesktop.login1.set-reboot-parameter",
2800                         /* details= */ NULL,
2801                         &m->polkit_registry,
2802                         error);
2803         if (r < 0)
2804                 return r;
2805         if (r == 0)
2806                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2807
2808         r = update_reboot_parameter_and_warn(arg, false);
2809         if (r < 0)
2810                 return r;
2811
2812         return sd_bus_reply_method_return(message, NULL);
2813 }
2814
2815 static int method_can_reboot_parameter(
2816                 sd_bus_message *message,
2817                 void *userdata,
2818                 sd_bus_error *error) {
2819
2820         _unused_ Manager *m = ASSERT_PTR(userdata);
2821         int r;
2822
2823         assert(message);
2824
2825         r = detect_container();
2826         if (r < 0)
2827                 return r;
2828         if (r > 0) /* Inside containers, specifying a reboot parameter, doesn't make much sense */
2829                 return sd_bus_reply_method_return(message, "s", "na");
2830
2831         return return_test_polkit(
2832                         message,
2833                         "org.freedesktop.login1.set-reboot-parameter",
2834                         /* details= */ NULL,
2835                         /* good_user= */ UID_INVALID,
2836                         error);
2837 }
2838
2839 static int property_get_reboot_to_firmware_setup(
2840                 sd_bus *bus,
2841                 const char *path,
2842                 const char *interface,
2843                 const char *property,
2844                 sd_bus_message *reply,
2845                 void *userdata,
2846                 sd_bus_error *error) {
2847         int r;
2848
2849         assert(bus);
2850         assert(reply);
2851         assert(userdata);
2852
2853         r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
2854         if (r == -ENXIO) {
2855                 /* EFI case: let's see what is currently configured in the EFI variables */
2856                 r = efi_get_reboot_to_firmware();
2857                 if (r < 0 && r != -EOPNOTSUPP)
2858                         log_warning_errno(r, "Failed to determine reboot-to-firmware-setup state: %m");
2859         } else if (r < 0)
2860                 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
2861         else if (r > 0) {
2862                 /* Non-EFI case: let's see whether /run/systemd/reboot-to-firmware-setup exists. */
2863                 if (access("/run/systemd/reboot-to-firmware-setup", F_OK) < 0) {
2864                         if (errno != ENOENT)
2865                                 log_warning_errno(errno, "Failed to check whether /run/systemd/reboot-to-firmware-setup exists: %m");
2866
2867                         r = false;
2868                 } else
2869                         r = true;
2870         }
2871
2872         return sd_bus_message_append(reply, "b", r > 0);
2873 }
2874
2875 static int method_set_reboot_to_firmware_setup(
2876                 sd_bus_message *message,
2877                 void *userdata,
2878                 sd_bus_error *error) {
2879
2880         Manager *m = ASSERT_PTR(userdata);
2881         bool use_efi;
2882         int b, r;
2883
2884         assert(message);
2885
2886         r = sd_bus_message_read(message, "b", &b);
2887         if (r < 0)
2888                 return r;
2889
2890         r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
2891         if (r == -ENXIO) {
2892                 /* EFI case: let's see what the firmware supports */
2893
2894                 r = efi_reboot_to_firmware_supported();
2895                 if (r == -EOPNOTSUPP)
2896                         return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Firmware does not support boot into firmware.");
2897                 if (r < 0)
2898                         return r;
2899
2900                 use_efi = true;
2901
2902         } else if (r <= 0) {
2903                 /* non-EFI case: $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP is set to off */
2904
2905                 if (r < 0)
2906                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
2907
2908                 return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Firmware does not support boot into firmware.");
2909         } else
2910                 /* non-EFI case: $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP is set to on */
2911                 use_efi = false;
2912
2913         r = bus_verify_polkit_async(
2914                         message,
2915                         "org.freedesktop.login1.set-reboot-to-firmware-setup",
2916                         /* details= */ NULL,
2917                         &m->polkit_registry,
2918                         error);
2919         if (r < 0)
2920                 return r;
2921         if (r == 0)
2922                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2923
2924         if (use_efi) {
2925                 r = efi_set_reboot_to_firmware(b);
2926                 if (r < 0)
2927                         return r;
2928         } else {
2929                 if (b) {
2930                         r = touch("/run/systemd/reboot-to-firmware-setup");
2931                         if (r < 0)
2932                                 return r;
2933                 } else {
2934                         if (unlink("/run/systemd/reboot-to-firmware-setup") < 0 && errno != ENOENT)
2935                                 return -errno;
2936                 }
2937         }
2938
2939         return sd_bus_reply_method_return(message, NULL);
2940 }
2941
2942 static int method_can_reboot_to_firmware_setup(
2943                 sd_bus_message *message,
2944                 void *userdata,
2945                 sd_bus_error *error) {
2946
2947         _unused_ Manager *m = ASSERT_PTR(userdata);
2948         int r;
2949
2950         assert(message);
2951
2952         r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
2953         if (r == -ENXIO) {
2954                 /* EFI case: let's see what the firmware supports */
2955
2956                 r = efi_reboot_to_firmware_supported();
2957                 if (r < 0) {
2958                         if (r != -EOPNOTSUPP)
2959                                 log_warning_errno(r, "Failed to determine whether reboot to firmware is supported: %m");
2960
2961                         return sd_bus_reply_method_return(message, "s", "na");
2962                 }
2963
2964         } else if (r <= 0) {
2965                 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP */
2966
2967                 if (r < 0)
2968                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
2969
2970                 return sd_bus_reply_method_return(message, "s", "na");
2971         }
2972
2973         return return_test_polkit(
2974                         message,
2975                         "org.freedesktop.login1.set-reboot-to-firmware-setup",
2976                         /* details= */ NULL,
2977                         /* good_user= */ UID_INVALID,
2978                         error);
2979 }
2980
2981 static int property_get_reboot_to_boot_loader_menu(
2982                 sd_bus *bus,
2983                 const char *path,
2984                 const char *interface,
2985                 const char *property,
2986                 sd_bus_message *reply,
2987                 void *userdata,
2988                 sd_bus_error *error) {
2989
2990         uint64_t x = UINT64_MAX;
2991         int r;
2992
2993         assert(bus);
2994         assert(reply);
2995         assert(userdata);
2996
2997         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
2998         if (r == -ENXIO) {
2999                 /* EFI case: returns the current value of LoaderConfigTimeoutOneShot. Three cases are distinguished:
3000                  *
3001                  *     1. Variable not set, boot into boot loader menu is not enabled (we return UINT64_MAX to the user)
3002                  *     2. Variable set to "0", boot into boot loader menu is enabled with no timeout (we return 0 to the user)
3003                  *     3. Variable set to numeric value formatted in ASCII, boot into boot loader menu with the specified timeout in seconds
3004                  */
3005
3006                 r = efi_loader_get_config_timeout_one_shot(&x);
3007                 if (r < 0) {
3008                         if (r != -ENOENT)
3009                                 log_warning_errno(r, "Failed to read LoaderConfigTimeoutOneShot variable, ignoring: %m");
3010                 }
3011
3012         } else if (r < 0)
3013                 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
3014         else if (r > 0) {
3015                 _cleanup_free_ char *v = NULL;
3016
3017                 /* Non-EFI case, let's process /run/systemd/reboot-to-boot-loader-menu. */
3018
3019                 r = read_one_line_file("/run/systemd/reboot-to-boot-loader-menu", &v);
3020                 if (r < 0) {
3021                         if (r != -ENOENT)
3022                                 log_warning_errno(r, "Failed to read /run/systemd/reboot-to-boot-loader-menu: %m");
3023                 } else {
3024                         r = safe_atou64(v, &x);
3025                         if (r < 0)
3026                                 log_warning_errno(r, "Failed to parse /run/systemd/reboot-to-boot-loader-menu: %m");
3027                 }
3028         }
3029
3030         return sd_bus_message_append(reply, "t", x);
3031 }
3032
3033 static int method_set_reboot_to_boot_loader_menu(
3034                 sd_bus_message *message,
3035                 void *userdata,
3036                 sd_bus_error *error) {
3037
3038         Manager *m = ASSERT_PTR(userdata);
3039         bool use_efi;
3040         uint64_t x;
3041         int r;
3042
3043         assert(message);
3044
3045         r = sd_bus_message_read(message, "t", &x);
3046         if (r < 0)
3047                 return r;
3048
3049         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
3050         if (r == -ENXIO) {
3051                 uint64_t features;
3052
3053                 /* EFI case: let's see if booting into boot loader menu is supported. */
3054
3055                 r = efi_loader_get_features(&features);
3056                 if (r < 0)
3057                         log_warning_errno(r, "Failed to determine whether reboot to boot loader menu is supported: %m");
3058                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT))
3059                         return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader does not support boot into boot loader menu.");
3060
3061                 use_efi = true;
3062
3063         } else if (r <= 0) {
3064                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU is set to off */
3065
3066                 if (r < 0)
3067                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
3068
3069                 return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader does not support boot into boot loader menu.");
3070         } else
3071                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU is set to on */
3072                 use_efi = false;
3073
3074         r = bus_verify_polkit_async(
3075                         message,
3076                         "org.freedesktop.login1.set-reboot-to-boot-loader-menu",
3077                         /* details= */ NULL,
3078                         &m->polkit_registry,
3079                         error);
3080         if (r < 0)
3081                 return r;
3082         if (r == 0)
3083                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
3084
3085         if (use_efi) {
3086                 if (x == UINT64_MAX)
3087                         r = efi_set_variable(EFI_LOADER_VARIABLE(LoaderConfigTimeoutOneShot), NULL, 0);
3088                 else {
3089                         char buf[DECIMAL_STR_MAX(uint64_t) + 1];
3090                         xsprintf(buf, "%" PRIu64, DIV_ROUND_UP(x, USEC_PER_SEC)); /* second granularity */
3091
3092                         r = efi_set_variable_string(EFI_LOADER_VARIABLE(LoaderConfigTimeoutOneShot), buf);
3093                 }
3094                 if (r < 0)
3095                         return r;
3096         } else {
3097                 if (x == UINT64_MAX) {
3098                         if (unlink("/run/systemd/reboot-to-boot-loader-menu") < 0 && errno != ENOENT)
3099                                 return -errno;
3100                 } else {
3101                         char buf[DECIMAL_STR_MAX(uint64_t) + 1];
3102
3103                         xsprintf(buf, "%" PRIu64, x); /* μs granularity */
3104
3105                         r = write_string_file_atomic_label("/run/systemd/reboot-to-boot-loader-menu", buf);
3106                         if (r < 0)
3107                                 return r;
3108                 }
3109         }
3110
3111         return sd_bus_reply_method_return(message, NULL);
3112 }
3113
3114 static int method_can_reboot_to_boot_loader_menu(
3115                 sd_bus_message *message,
3116                 void *userdata,
3117                 sd_bus_error *error) {
3118
3119         _unused_ Manager *m = ASSERT_PTR(userdata);
3120         int r;
3121
3122         assert(message);
3123
3124         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
3125         if (r == -ENXIO) {
3126                 uint64_t features = 0;
3127
3128                 /* EFI case, let's see if booting into boot loader menu is supported. */
3129
3130                 r = efi_loader_get_features(&features);
3131                 if (r < 0)
3132                         log_warning_errno(r, "Failed to determine whether reboot to boot loader menu is supported: %m");
3133                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT))
3134                         return sd_bus_reply_method_return(message, "s", "na");
3135
3136         } else if (r <= 0) {
3137                 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU */
3138
3139                 if (r < 0)
3140                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
3141
3142                 return sd_bus_reply_method_return(message, "s", "na");
3143         }
3144
3145         return return_test_polkit(
3146                         message,
3147                         "org.freedesktop.login1.set-reboot-to-boot-loader-menu",
3148                         /* details= */ NULL,
3149                         /* good_user= */ UID_INVALID,
3150                         error);
3151 }
3152
3153 static int property_get_reboot_to_boot_loader_entry(
3154                 sd_bus *bus,
3155                 const char *path,
3156                 const char *interface,
3157                 const char *property,
3158                 sd_bus_message *reply,
3159                 void *userdata,
3160                 sd_bus_error *error) {
3161
3162         _cleanup_free_ char *v = NULL;
3163         Manager *m = ASSERT_PTR(userdata);
3164         const char *x = NULL;
3165         int r;
3166
3167         assert(bus);
3168         assert(reply);
3169
3170         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
3171         if (r == -ENXIO) {
3172                 /* EFI case: let's read the LoaderEntryOneShot variable */
3173
3174                 r = efi_loader_update_entry_one_shot_cache(&m->efi_loader_entry_one_shot, &m->efi_loader_entry_one_shot_stat);
3175                 if (r < 0) {
3176                         if (r != -ENOENT)
3177                                 log_warning_errno(r, "Failed to read LoaderEntryOneShot variable, ignoring: %m");
3178                 } else
3179                         x = m->efi_loader_entry_one_shot;
3180
3181         } else if (r < 0)
3182                 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
3183         else if (r > 0) {
3184
3185                 /* Non-EFI case, let's process /run/systemd/reboot-to-boot-loader-entry. */
3186
3187                 r = read_one_line_file("/run/systemd/reboot-to-boot-loader-entry", &v);
3188                 if (r < 0) {
3189                         if (r != -ENOENT)
3190                                 log_warning_errno(r, "Failed to read /run/systemd/reboot-to-boot-loader-entry, ignoring: %m");
3191                 } else if (!efi_loader_entry_name_valid(v))
3192                         log_warning("/run/systemd/reboot-to-boot-loader-entry is not valid, ignoring.");
3193                 else
3194                         x = v;
3195         }
3196
3197         return sd_bus_message_append(reply, "s", x);
3198 }
3199
3200 static int boot_loader_entry_exists(Manager *m, const char *id) {
3201         _cleanup_(boot_config_free) BootConfig config = BOOT_CONFIG_NULL;
3202         int r;
3203
3204         assert(m);
3205         assert(id);
3206
3207         r = boot_config_load_auto(&config, NULL, NULL);
3208         if (r < 0 && r != -ENOKEY) /* don't complain if no GPT is found, hence skip ENOKEY */
3209                 return r;
3210
3211         r = manager_read_efi_boot_loader_entries(m);
3212         if (r >= 0)
3213                 (void) boot_config_augment_from_loader(&config, m->efi_boot_loader_entries, /* auto_only= */ true);
3214
3215         return !!boot_config_find_entry(&config, id);
3216 }
3217
3218 static int method_set_reboot_to_boot_loader_entry(
3219                 sd_bus_message *message,
3220                 void *userdata,
3221                 sd_bus_error *error) {
3222
3223         Manager *m = ASSERT_PTR(userdata);
3224         bool use_efi;
3225         const char *v;
3226         int r;
3227
3228         assert(message);
3229
3230         r = sd_bus_message_read(message, "s", &v);
3231         if (r < 0)
3232                 return r;
3233
3234         if (isempty(v))
3235                 v = NULL;
3236         else if (efi_loader_entry_name_valid(v)) {
3237                 r = boot_loader_entry_exists(m, v);
3238                 if (r < 0)
3239                         return r;
3240                 if (r == 0)
3241                         return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader entry '%s' is not known.", v);
3242         } else
3243                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Boot loader entry name '%s' is not valid, refusing.", v);
3244
3245         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
3246         if (r == -ENXIO) {
3247                 uint64_t features;
3248
3249                 /* EFI case: let's see if booting into boot loader entry is supported. */
3250
3251                 r = efi_loader_get_features(&features);
3252                 if (r < 0)
3253                         log_warning_errno(r, "Failed to determine whether reboot into boot loader entry is supported: %m");
3254                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_ENTRY_ONESHOT))
3255                         return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Loader does not support boot into boot loader entry.");
3256
3257                 use_efi = true;
3258
3259         } else if (r <= 0) {
3260                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY is set to off */
3261
3262                 if (r < 0)
3263                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
3264
3265                 return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Loader does not support boot into boot loader entry.");
3266         } else
3267                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY is set to on */
3268                 use_efi = false;
3269
3270         r = bus_verify_polkit_async(
3271                         message,
3272                         "org.freedesktop.login1.set-reboot-to-boot-loader-entry",
3273                         /* details= */ NULL,
3274                         &m->polkit_registry,
3275                         error);
3276         if (r < 0)
3277                 return r;
3278         if (r == 0)
3279                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
3280
3281         if (use_efi) {
3282                 if (isempty(v))
3283                         /* Delete item */
3284                         r = efi_set_variable(EFI_LOADER_VARIABLE(LoaderEntryOneShot), NULL, 0);
3285                 else
3286                         r = efi_set_variable_string(EFI_LOADER_VARIABLE(LoaderEntryOneShot), v);
3287                 if (r < 0)
3288                         return r;
3289         } else {
3290                 if (isempty(v)) {
3291                         if (unlink("/run/systemd/reboot-to-boot-loader-entry") < 0 && errno != ENOENT)
3292                                 return -errno;
3293                 } else {
3294                         r = write_string_file_atomic_label("/run/systemd/reboot-boot-to-loader-entry", v);
3295                         if (r < 0)
3296                                 return r;
3297                 }
3298         }
3299
3300         return sd_bus_reply_method_return(message, NULL);
3301 }
3302
3303 static int method_can_reboot_to_boot_loader_entry(
3304                 sd_bus_message *message,
3305                 void *userdata,
3306                 sd_bus_error *error) {
3307
3308         _unused_ Manager *m = ASSERT_PTR(userdata);
3309         int r;
3310
3311         assert(message);
3312
3313         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
3314         if (r == -ENXIO) {
3315                 uint64_t features = 0;
3316
3317                 /* EFI case, let's see if booting into boot loader entry is supported. */
3318
3319                 r = efi_loader_get_features(&features);
3320                 if (r < 0)
3321                         log_warning_errno(r, "Failed to determine whether reboot to boot loader entry is supported: %m");
3322                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_ENTRY_ONESHOT))
3323                         return sd_bus_reply_method_return(message, "s", "na");
3324
3325         } else if (r <= 0) {
3326                 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY */
3327
3328                 if (r < 0)
3329                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
3330
3331                 return sd_bus_reply_method_return(message, "s", "na");
3332         }
3333
3334         return return_test_polkit(
3335                         message,
3336                         "org.freedesktop.login1.set-reboot-to-boot-loader-entry",
3337                         /* details= */ NULL,
3338                         /* good_user= */ UID_INVALID,
3339                         error);
3340 }
3341
3342 static int property_get_boot_loader_entries(
3343                 sd_bus *bus,
3344                 const char *path,
3345                 const char *interface,
3346                 const char *property,
3347                 sd_bus_message *reply,
3348                 void *userdata,
3349                 sd_bus_error *error) {
3350
3351         _cleanup_(boot_config_free) BootConfig config = BOOT_CONFIG_NULL;
3352         Manager *m = ASSERT_PTR(userdata);
3353         size_t i;
3354         int r;
3355
3356         assert(bus);
3357         assert(reply);
3358
3359         r = boot_config_load_auto(&config, NULL, NULL);
3360         if (r < 0 && r != -ENOKEY) /* don't complain if there's no GPT found */
3361                 return r;
3362
3363         r = manager_read_efi_boot_loader_entries(m);
3364         if (r >= 0)
3365                 (void) boot_config_augment_from_loader(&config, m->efi_boot_loader_entries, /* auto_only= */ true);
3366
3367         r = sd_bus_message_open_container(reply, 'a', "s");
3368         if (r < 0)
3369                 return r;
3370
3371         for (i = 0; i < config.n_entries; i++) {
3372                 BootEntry *e = config.entries + i;
3373
3374                 r = sd_bus_message_append(reply, "s", e->id);
3375                 if (r < 0)
3376                         return r;
3377         }
3378
3379         return sd_bus_message_close_container(reply);
3380 }
3381
3382 static int method_set_wall_message(
3383                 sd_bus_message *message,
3384                 void *userdata,
3385                 sd_bus_error *error) {
3386
3387         int r;
3388         Manager *m = ASSERT_PTR(userdata);
3389         char *wall_message;
3390         int enable_wall_messages;
3391
3392         assert(message);
3393
3394         r = sd_bus_message_read(message, "sb", &wall_message, &enable_wall_messages);
3395         if (r < 0)
3396                 return r;
3397
3398         if (strlen(wall_message) > WALL_MESSAGE_MAX)
3399                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3400                         "Wall message too long, maximum permitted length is %u characters.",
3401                         WALL_MESSAGE_MAX);
3402
3403         /* Short-circuit the operation if the desired state is already in place, to
3404          * avoid an unnecessary polkit permission check. */
3405         if (streq_ptr(m->wall_message, empty_to_null(wall_message)) &&
3406             m->enable_wall_messages == enable_wall_messages)
3407                 goto done;
3408
3409         r = bus_verify_polkit_async(
3410                         message,
3411                         "org.freedesktop.login1.set-wall-message",
3412                         /* details= */ NULL,
3413                         &m->polkit_registry,
3414                         error);
3415         if (r < 0)
3416                 return r;
3417         if (r == 0)
3418                 return 1; /* Will call us back */
3419
3420         r = free_and_strdup(&m->wall_message, empty_to_null(wall_message));
3421         if (r < 0)
3422                 return log_oom();
3423
3424         m->enable_wall_messages = enable_wall_messages;
3425
3426  done:
3427         return sd_bus_reply_method_return(message, NULL);
3428 }
3429
3430 static int method_inhibit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3431         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
3432         _cleanup_(pidref_done) PidRef pidref = PIDREF_NULL;
3433         const char *who, *why, *what, *mode;
3434         _cleanup_free_ char *id = NULL;
3435         _cleanup_close_ int fifo_fd = -EBADF;
3436         Manager *m = ASSERT_PTR(userdata);
3437         InhibitMode mm;
3438         InhibitWhat w;
3439         pid_t pid;
3440         uid_t uid;
3441         int r;
3442
3443         assert(message);
3444
3445         r = sd_bus_message_read(message, "ssss", &what, &who, &why, &mode);
3446         if (r < 0)
3447                 return r;
3448
3449         w = inhibit_what_from_string(what);
3450         if (w <= 0)
3451                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3452                                          "Invalid what specification %s", what);
3453
3454         mm = inhibit_mode_from_string(mode);
3455         if (mm < 0)
3456                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3457                                          "Invalid mode specification %s", mode);
3458
3459         /* Delay is only supported for shutdown/sleep */
3460         if (mm == INHIBIT_DELAY && (w & ~(INHIBIT_SHUTDOWN|INHIBIT_SLEEP)))
3461                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3462                                          "Delay inhibitors only supported for shutdown and sleep");
3463
3464         /* Don't allow taking delay locks while we are already
3465          * executing the operation. We shouldn't create the impression
3466          * that the lock was successful if the machine is about to go
3467          * down/suspend any moment. */
3468         if (m->delayed_action && m->delayed_action->inhibit_what & w)
3469                 return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS,
3470                                          "The operation inhibition has been requested for is already running");
3471
3472         r = bus_verify_polkit_async(
3473                         message,
3474                         w == INHIBIT_SHUTDOWN             ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-shutdown" : "org.freedesktop.login1.inhibit-delay-shutdown") :
3475                         w == INHIBIT_SLEEP                ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-sleep"    : "org.freedesktop.login1.inhibit-delay-sleep") :
3476                         w == INHIBIT_IDLE                 ? "org.freedesktop.login1.inhibit-block-idle" :
3477                         w == INHIBIT_HANDLE_POWER_KEY     ? "org.freedesktop.login1.inhibit-handle-power-key" :
3478                         w == INHIBIT_HANDLE_SUSPEND_KEY   ? "org.freedesktop.login1.inhibit-handle-suspend-key" :
3479                         w == INHIBIT_HANDLE_REBOOT_KEY    ? "org.freedesktop.login1.inhibit-handle-reboot-key" :
3480                         w == INHIBIT_HANDLE_HIBERNATE_KEY ? "org.freedesktop.login1.inhibit-handle-hibernate-key" :
3481                                                             "org.freedesktop.login1.inhibit-handle-lid-switch",
3482                         /* details= */ NULL,
3483                         &m->polkit_registry,
3484                         error);
3485         if (r < 0)
3486                 return r;
3487         if (r == 0)
3488                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
3489
3490         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID|SD_BUS_CREDS_PID, &creds);
3491         if (r < 0)
3492                 return r;
3493
3494         r = sd_bus_creds_get_euid(creds, &uid);
3495         if (r < 0)
3496                 return r;
3497
3498         r = sd_bus_creds_get_pid(creds, &pid);
3499         if (r < 0)
3500                 return r;
3501
3502         r = pidref_set_pid(&pidref, pid);
3503         if (r < 0)
3504                 return sd_bus_error_set_errnof(error, r, "Failed pin source process "PID_FMT": %m", pid);
3505
3506         if (hashmap_size(m->inhibitors) >= m->inhibitors_max)
3507                 return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED,
3508                                          "Maximum number of inhibitors (%" PRIu64 ") reached, refusing further inhibitors.",
3509                                          m->inhibitors_max);
3510
3511         do {
3512                 id = mfree(id);
3513
3514                 if (asprintf(&id, "%" PRIu64, ++m->inhibit_counter) < 0)
3515                         return -ENOMEM;
3516
3517         } while (hashmap_get(m->inhibitors, id));
3518
3519         _cleanup_(inhibitor_freep) Inhibitor *i = NULL;
3520         r = manager_add_inhibitor(m, id, &i);
3521         if (r < 0)
3522                 return r;
3523
3524         i->what = w;
3525         i->mode = mm;
3526         i->pid = TAKE_PIDREF(pidref);
3527         i->uid = uid;
3528         i->why = strdup(why);
3529         i->who = strdup(who);
3530
3531         if (!i->why || !i->who)
3532                 return -ENOMEM;
3533
3534         fifo_fd = inhibitor_create_fifo(i);
3535         if (fifo_fd < 0)
3536                 return fifo_fd;
3537
3538         r = inhibitor_start(i);
3539         if (r < 0)
3540                 return r;
3541         TAKE_PTR(i);
3542
3543         return sd_bus_reply_method_return(message, "h", fifo_fd);
3544 }
3545
3546 static const sd_bus_vtable manager_vtable[] = {
3547         SD_BUS_VTABLE_START(0),
3548
3549         SD_BUS_WRITABLE_PROPERTY("EnableWallMessages", "b", bus_property_get_bool, bus_property_set_bool, offsetof(Manager, enable_wall_messages), 0),
3550         SD_BUS_WRITABLE_PROPERTY("WallMessage", "s", NULL, NULL, offsetof(Manager, wall_message), 0),
3551
3552         SD_BUS_PROPERTY("NAutoVTs", "u", NULL, offsetof(Manager, n_autovts), SD_BUS_VTABLE_PROPERTY_CONST),
3553         SD_BUS_PROPERTY("KillOnlyUsers", "as", NULL, offsetof(Manager, kill_only_users), SD_BUS_VTABLE_PROPERTY_CONST),
3554         SD_BUS_PROPERTY("KillExcludeUsers", "as", NULL, offsetof(Manager, kill_exclude_users), SD_BUS_VTABLE_PROPERTY_CONST),
3555         SD_BUS_PROPERTY("KillUserProcesses", "b", bus_property_get_bool, offsetof(Manager, kill_user_processes), SD_BUS_VTABLE_PROPERTY_CONST),
3556         SD_BUS_PROPERTY("RebootParameter", "s", property_get_reboot_parameter, 0, 0),
3557         SD_BUS_PROPERTY("RebootToFirmwareSetup", "b", property_get_reboot_to_firmware_setup, 0, 0),
3558         SD_BUS_PROPERTY("RebootToBootLoaderMenu", "t", property_get_reboot_to_boot_loader_menu, 0, 0),
3559         SD_BUS_PROPERTY("RebootToBootLoaderEntry", "s", property_get_reboot_to_boot_loader_entry, 0, 0),
3560         SD_BUS_PROPERTY("BootLoaderEntries", "as", property_get_boot_loader_entries, 0, SD_BUS_VTABLE_PROPERTY_CONST),
3561         SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3562         SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3563         SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3564         SD_BUS_PROPERTY("BlockInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3565         SD_BUS_PROPERTY("DelayInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3566         SD_BUS_PROPERTY("InhibitDelayMaxUSec", "t", NULL, offsetof(Manager, inhibit_delay_max), SD_BUS_VTABLE_PROPERTY_CONST),
3567         SD_BUS_PROPERTY("UserStopDelayUSec", "t", NULL, offsetof(Manager, user_stop_delay), SD_BUS_VTABLE_PROPERTY_CONST),
3568         SD_BUS_PROPERTY("SleepOperation", "as", property_get_sleep_operations, 0, SD_BUS_VTABLE_PROPERTY_CONST),
3569         SD_BUS_PROPERTY("HandlePowerKey", "s", property_get_handle_action, offsetof(Manager, handle_power_key), SD_BUS_VTABLE_PROPERTY_CONST),
3570         SD_BUS_PROPERTY("HandlePowerKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_power_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3571         SD_BUS_PROPERTY("HandleRebootKey", "s", property_get_handle_action, offsetof(Manager, handle_reboot_key), SD_BUS_VTABLE_PROPERTY_CONST),
3572         SD_BUS_PROPERTY("HandleRebootKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_reboot_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3573         SD_BUS_PROPERTY("HandleSuspendKey", "s", property_get_handle_action, offsetof(Manager, handle_suspend_key), SD_BUS_VTABLE_PROPERTY_CONST),
3574         SD_BUS_PROPERTY("HandleSuspendKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_suspend_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3575         SD_BUS_PROPERTY("HandleHibernateKey", "s", property_get_handle_action, offsetof(Manager, handle_hibernate_key), SD_BUS_VTABLE_PROPERTY_CONST),
3576         SD_BUS_PROPERTY("HandleHibernateKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_hibernate_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3577         SD_BUS_PROPERTY("HandleLidSwitch", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch), SD_BUS_VTABLE_PROPERTY_CONST),
3578         SD_BUS_PROPERTY("HandleLidSwitchExternalPower", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch_ep), SD_BUS_VTABLE_PROPERTY_CONST),
3579         SD_BUS_PROPERTY("HandleLidSwitchDocked", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch_docked), SD_BUS_VTABLE_PROPERTY_CONST),
3580         SD_BUS_PROPERTY("HoldoffTimeoutUSec", "t", NULL, offsetof(Manager, holdoff_timeout_usec), SD_BUS_VTABLE_PROPERTY_CONST),
3581         SD_BUS_PROPERTY("IdleAction", "s", property_get_handle_action, offsetof(Manager, idle_action), SD_BUS_VTABLE_PROPERTY_CONST),
3582         SD_BUS_PROPERTY("IdleActionUSec", "t", NULL, offsetof(Manager, idle_action_usec), SD_BUS_VTABLE_PROPERTY_CONST),
3583         SD_BUS_PROPERTY("PreparingForShutdown", "b", property_get_preparing, 0, 0),
3584         SD_BUS_PROPERTY("PreparingForSleep", "b", property_get_preparing, 0, 0),
3585         SD_BUS_PROPERTY("ScheduledShutdown", "(st)", property_get_scheduled_shutdown, 0, 0),
3586         SD_BUS_PROPERTY("Docked", "b", property_get_docked, 0, 0),
3587         SD_BUS_PROPERTY("LidClosed", "b", property_get_lid_closed, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3588         SD_BUS_PROPERTY("OnExternalPower", "b", property_get_on_external_power, 0, 0),
3589         SD_BUS_PROPERTY("RemoveIPC", "b", bus_property_get_bool, offsetof(Manager, remove_ipc), SD_BUS_VTABLE_PROPERTY_CONST),
3590         SD_BUS_PROPERTY("RuntimeDirectorySize", "t", NULL, offsetof(Manager, runtime_dir_size), SD_BUS_VTABLE_PROPERTY_CONST),
3591         SD_BUS_PROPERTY("RuntimeDirectoryInodesMax", "t", NULL, offsetof(Manager, runtime_dir_inodes), SD_BUS_VTABLE_PROPERTY_CONST),
3592         SD_BUS_PROPERTY("InhibitorsMax", "t", NULL, offsetof(Manager, inhibitors_max), SD_BUS_VTABLE_PROPERTY_CONST),
3593         SD_BUS_PROPERTY("NCurrentInhibitors", "t", property_get_hashmap_size, offsetof(Manager, inhibitors), 0),
3594         SD_BUS_PROPERTY("SessionsMax", "t", NULL, offsetof(Manager, sessions_max), SD_BUS_VTABLE_PROPERTY_CONST),
3595         SD_BUS_PROPERTY("NCurrentSessions", "t", property_get_hashmap_size, offsetof(Manager, sessions), 0),
3596         SD_BUS_PROPERTY("UserTasksMax", "t", property_get_compat_user_tasks_max, 0, SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
3597         SD_BUS_PROPERTY("StopIdleSessionUSec", "t", NULL, offsetof(Manager, stop_idle_session_usec), SD_BUS_VTABLE_PROPERTY_CONST),
3598
3599         SD_BUS_METHOD_WITH_ARGS("GetSession",
3600                                 SD_BUS_ARGS("s", session_id),
3601                                 SD_BUS_RESULT("o", object_path),
3602                                 method_get_session,
3603                                 SD_BUS_VTABLE_UNPRIVILEGED),
3604         SD_BUS_METHOD_WITH_ARGS("GetSessionByPID",
3605                                 SD_BUS_ARGS("u", pid),
3606                                 SD_BUS_RESULT("o", object_path),
3607                                 method_get_session_by_pid,
3608                                 SD_BUS_VTABLE_UNPRIVILEGED),
3609         SD_BUS_METHOD_WITH_ARGS("GetUser",
3610                                 SD_BUS_ARGS("u", uid),
3611                                 SD_BUS_RESULT("o", object_path),
3612                                 method_get_user,
3613                                 SD_BUS_VTABLE_UNPRIVILEGED),
3614         SD_BUS_METHOD_WITH_ARGS("GetUserByPID",
3615                                 SD_BUS_ARGS("u", pid),
3616                                 SD_BUS_RESULT("o", object_path),
3617                                 method_get_user_by_pid,
3618                                 SD_BUS_VTABLE_UNPRIVILEGED),
3619         SD_BUS_METHOD_WITH_ARGS("GetSeat",
3620                                 SD_BUS_ARGS("s", seat_id),
3621                                 SD_BUS_RESULT("o", object_path),
3622                                 method_get_seat,
3623                                 SD_BUS_VTABLE_UNPRIVILEGED),
3624         SD_BUS_METHOD_WITH_ARGS("ListSessions",
3625                                 SD_BUS_NO_ARGS,
3626                                 SD_BUS_RESULT("a(susso)", sessions),
3627                                 method_list_sessions,
3628                                 SD_BUS_VTABLE_UNPRIVILEGED),
3629         SD_BUS_METHOD_WITH_ARGS("ListUsers",
3630                                 SD_BUS_NO_ARGS,
3631                                 SD_BUS_RESULT("a(uso)", users),
3632                                 method_list_users,
3633                                 SD_BUS_VTABLE_UNPRIVILEGED),
3634         SD_BUS_METHOD_WITH_ARGS("ListSeats",
3635                                 SD_BUS_NO_ARGS,
3636                                 SD_BUS_RESULT("a(so)", seats),
3637                                 method_list_seats,
3638                                 SD_BUS_VTABLE_UNPRIVILEGED),
3639         SD_BUS_METHOD_WITH_ARGS("ListInhibitors",
3640                                 SD_BUS_NO_ARGS,
3641                                 SD_BUS_RESULT("a(ssssuu)", inhibitors),
3642                                 method_list_inhibitors,
3643                                 SD_BUS_VTABLE_UNPRIVILEGED),
3644         SD_BUS_METHOD_WITH_ARGS("CreateSession",
3645                                 SD_BUS_ARGS("u", uid,
3646                                             "u", pid,
3647                                             "s", service,
3648                                             "s", type,
3649                                             "s", class,
3650                                             "s", desktop,
3651                                             "s", seat_id,
3652                                             "u", vtnr,
3653                                             "s", tty,
3654                                             "s", display,
3655                                             "b", remote,
3656                                             "s", remote_user,
3657                                             "s", remote_host,
3658                                             "a(sv)", properties),
3659                                 SD_BUS_RESULT("s", session_id,
3660                                               "o", object_path,
3661                                               "s", runtime_path,
3662                                               "h", fifo_fd,
3663                                               "u", uid,
3664                                               "s", seat_id,
3665                                               "u", vtnr,
3666                                               "b", existing),
3667                                 method_create_session,
3668                                 0),
3669         SD_BUS_METHOD_WITH_ARGS("CreateSessionWithPIDFD",
3670                                 SD_BUS_ARGS("u", uid,
3671                                             "h", pidfd,
3672                                             "s", service,
3673                                             "s", type,
3674                                             "s", class,
3675                                             "s", desktop,
3676                                             "s", seat_id,
3677                                             "u", vtnr,
3678                                             "s", tty,
3679                                             "s", display,
3680                                             "b", remote,
3681                                             "s", remote_user,
3682                                             "s", remote_host,
3683                                             "t", flags,
3684                                             "a(sv)", properties),
3685                                 SD_BUS_RESULT("s", session_id,
3686                                               "o", object_path,
3687                                               "s", runtime_path,
3688                                               "h", fifo_fd,
3689                                               "u", uid,
3690                                               "s", seat_id,
3691                                               "u", vtnr,
3692                                               "b", existing),
3693                                 method_create_session_pidfd,
3694                                 0),
3695         SD_BUS_METHOD_WITH_ARGS("ReleaseSession",
3696                                 SD_BUS_ARGS("s", session_id),
3697                                 SD_BUS_NO_RESULT,
3698                                 method_release_session,
3699                                 0),
3700         SD_BUS_METHOD_WITH_ARGS("ActivateSession",
3701                                 SD_BUS_ARGS("s", session_id),
3702                                 SD_BUS_NO_RESULT,
3703                                 method_activate_session,
3704                                 SD_BUS_VTABLE_UNPRIVILEGED),
3705         SD_BUS_METHOD_WITH_ARGS("ActivateSessionOnSeat",
3706                                 SD_BUS_ARGS("s", session_id, "s", seat_id),
3707                                 SD_BUS_NO_RESULT,
3708                                 method_activate_session_on_seat,
3709                                 SD_BUS_VTABLE_UNPRIVILEGED),
3710         SD_BUS_METHOD_WITH_ARGS("LockSession",
3711                                 SD_BUS_ARGS("s", session_id),
3712                                 SD_BUS_NO_RESULT,
3713                                 method_lock_session,
3714                                 SD_BUS_VTABLE_UNPRIVILEGED),
3715         SD_BUS_METHOD_WITH_ARGS("UnlockSession",
3716                                 SD_BUS_ARGS("s", session_id),
3717                                 SD_BUS_NO_RESULT,
3718                                 method_lock_session,
3719                                 SD_BUS_VTABLE_UNPRIVILEGED),
3720         SD_BUS_METHOD("LockSessions",
3721                       NULL,
3722                       NULL,
3723                       method_lock_sessions,
3724                       SD_BUS_VTABLE_UNPRIVILEGED),
3725         SD_BUS_METHOD("UnlockSessions",
3726                       NULL,
3727                       NULL,
3728                       method_lock_sessions,
3729                       SD_BUS_VTABLE_UNPRIVILEGED),
3730         SD_BUS_METHOD_WITH_ARGS("KillSession",
3731                                 SD_BUS_ARGS("s", session_id, "s", who, "i", signal_number),
3732                                 SD_BUS_NO_RESULT,
3733                                 method_kill_session,
3734                                 SD_BUS_VTABLE_UNPRIVILEGED),
3735         SD_BUS_METHOD_WITH_ARGS("KillUser",
3736                                 SD_BUS_ARGS("u", uid, "i", signal_number),
3737                                 SD_BUS_NO_RESULT,
3738                                 method_kill_user,
3739                                 SD_BUS_VTABLE_UNPRIVILEGED),
3740         SD_BUS_METHOD_WITH_ARGS("TerminateSession",
3741                                 SD_BUS_ARGS("s", session_id),
3742                                 SD_BUS_NO_RESULT,
3743                                 method_terminate_session,
3744                                 SD_BUS_VTABLE_UNPRIVILEGED),
3745         SD_BUS_METHOD_WITH_ARGS("TerminateUser",
3746                                 SD_BUS_ARGS("u", uid),
3747                                 SD_BUS_NO_RESULT,
3748                                 method_terminate_user,
3749                                 SD_BUS_VTABLE_UNPRIVILEGED),
3750         SD_BUS_METHOD_WITH_ARGS("TerminateSeat",
3751                                 SD_BUS_ARGS("s", seat_id),
3752                                 SD_BUS_NO_RESULT,
3753                                 method_terminate_seat,
3754                                 SD_BUS_VTABLE_UNPRIVILEGED),
3755         SD_BUS_METHOD_WITH_ARGS("SetUserLinger",
3756                                 SD_BUS_ARGS("u", uid, "b", enable, "b", interactive),
3757                                 SD_BUS_NO_RESULT,
3758                                 method_set_user_linger,
3759                                 SD_BUS_VTABLE_UNPRIVILEGED),
3760         SD_BUS_METHOD_WITH_ARGS("AttachDevice",
3761                                 SD_BUS_ARGS("s", seat_id, "s", sysfs_path, "b", interactive),
3762                                 SD_BUS_NO_RESULT,
3763                                 method_attach_device,
3764                                 SD_BUS_VTABLE_UNPRIVILEGED),
3765         SD_BUS_METHOD_WITH_ARGS("FlushDevices",
3766                                 SD_BUS_ARGS("b", interactive),
3767                                 SD_BUS_NO_RESULT,
3768                                 method_flush_devices,
3769                                 SD_BUS_VTABLE_UNPRIVILEGED),
3770         SD_BUS_METHOD_WITH_ARGS("PowerOff",
3771                                 SD_BUS_ARGS("b", interactive),
3772                                 SD_BUS_NO_RESULT,
3773                                 method_poweroff,
3774                                 SD_BUS_VTABLE_UNPRIVILEGED),
3775         SD_BUS_METHOD_WITH_ARGS("PowerOffWithFlags",
3776                                 SD_BUS_ARGS("t", flags),
3777                                 SD_BUS_NO_RESULT,
3778                                 method_poweroff,
3779                                 SD_BUS_VTABLE_UNPRIVILEGED),
3780         SD_BUS_METHOD_WITH_ARGS("Reboot",
3781                                 SD_BUS_ARGS("b", interactive),
3782                                 SD_BUS_NO_RESULT,
3783                                 method_reboot,
3784                                 SD_BUS_VTABLE_UNPRIVILEGED),
3785         SD_BUS_METHOD_WITH_ARGS("RebootWithFlags",
3786                                 SD_BUS_ARGS("t", flags),
3787                                 SD_BUS_NO_RESULT,
3788                                 method_reboot,
3789                                 SD_BUS_VTABLE_UNPRIVILEGED),
3790         SD_BUS_METHOD_WITH_ARGS("Halt",
3791                                 SD_BUS_ARGS("b", interactive),
3792                                 SD_BUS_NO_RESULT,
3793                                 method_halt,
3794                                 SD_BUS_VTABLE_UNPRIVILEGED),
3795         SD_BUS_METHOD_WITH_ARGS("HaltWithFlags",
3796                                 SD_BUS_ARGS("t", flags),
3797                                 SD_BUS_NO_RESULT,
3798                                 method_halt,
3799                                 SD_BUS_VTABLE_UNPRIVILEGED),
3800         SD_BUS_METHOD_WITH_ARGS("Suspend",
3801                                 SD_BUS_ARGS("b", interactive),
3802                                 SD_BUS_NO_RESULT,
3803                                 method_suspend,
3804                                 SD_BUS_VTABLE_UNPRIVILEGED),
3805         SD_BUS_METHOD_WITH_ARGS("SuspendWithFlags",
3806                                 SD_BUS_ARGS("t", flags),
3807                                 SD_BUS_NO_RESULT,
3808                                 method_suspend,
3809                                 SD_BUS_VTABLE_UNPRIVILEGED),
3810         SD_BUS_METHOD_WITH_ARGS("Hibernate",
3811                                 SD_BUS_ARGS("b", interactive),
3812                                 SD_BUS_NO_RESULT,
3813                                 method_hibernate,
3814                                 SD_BUS_VTABLE_UNPRIVILEGED),
3815         SD_BUS_METHOD_WITH_ARGS("HibernateWithFlags",
3816                                 SD_BUS_ARGS("t", flags),
3817                                 SD_BUS_NO_RESULT,
3818                                 method_hibernate,
3819                                 SD_BUS_VTABLE_UNPRIVILEGED),
3820         SD_BUS_METHOD_WITH_ARGS("HybridSleep",
3821                                 SD_BUS_ARGS("b", interactive),
3822                                 SD_BUS_NO_RESULT,
3823                                 method_hybrid_sleep,
3824                                 SD_BUS_VTABLE_UNPRIVILEGED),
3825         SD_BUS_METHOD_WITH_ARGS("HybridSleepWithFlags",
3826                                 SD_BUS_ARGS("t", flags),
3827                                 SD_BUS_NO_RESULT,
3828                                 method_hybrid_sleep,
3829                                 SD_BUS_VTABLE_UNPRIVILEGED),
3830         SD_BUS_METHOD_WITH_ARGS("SuspendThenHibernate",
3831                                 SD_BUS_ARGS("b", interactive),
3832                                 SD_BUS_NO_RESULT,
3833                                 method_suspend_then_hibernate,
3834                                 SD_BUS_VTABLE_UNPRIVILEGED),
3835         SD_BUS_METHOD_WITH_ARGS("SuspendThenHibernateWithFlags",
3836                                 SD_BUS_ARGS("t", flags),
3837                                 SD_BUS_NO_RESULT,
3838                                 method_suspend_then_hibernate,
3839                                 SD_BUS_VTABLE_UNPRIVILEGED),
3840         SD_BUS_METHOD_WITH_ARGS("Sleep",
3841                                 SD_BUS_ARGS("t", flags),
3842                                 SD_BUS_NO_RESULT,
3843                                 method_sleep,
3844                                 SD_BUS_VTABLE_UNPRIVILEGED),
3845         SD_BUS_METHOD_WITH_ARGS("CanPowerOff",
3846                                 SD_BUS_NO_ARGS,
3847                                 SD_BUS_RESULT("s", result),
3848                                 method_can_poweroff,
3849                                 SD_BUS_VTABLE_UNPRIVILEGED),
3850         SD_BUS_METHOD_WITH_ARGS("CanReboot",
3851                                 SD_BUS_NO_ARGS,
3852                                 SD_BUS_RESULT("s", result),
3853                                 method_can_reboot,
3854                                 SD_BUS_VTABLE_UNPRIVILEGED),
3855         SD_BUS_METHOD_WITH_ARGS("CanHalt",
3856                                 SD_BUS_NO_ARGS,
3857                                 SD_BUS_RESULT("s", result),
3858                                 method_can_halt,
3859                                 SD_BUS_VTABLE_UNPRIVILEGED),
3860         SD_BUS_METHOD_WITH_ARGS("CanSuspend",
3861                                 SD_BUS_NO_ARGS,
3862                                 SD_BUS_RESULT("s", result),
3863                                 method_can_suspend,
3864                                 SD_BUS_VTABLE_UNPRIVILEGED),
3865         SD_BUS_METHOD_WITH_ARGS("CanHibernate",
3866                                 SD_BUS_NO_ARGS,
3867                                 SD_BUS_RESULT("s", result),
3868                                 method_can_hibernate,
3869                                 SD_BUS_VTABLE_UNPRIVILEGED),
3870         SD_BUS_METHOD_WITH_ARGS("CanHybridSleep",
3871                                 SD_BUS_NO_ARGS,
3872                                 SD_BUS_RESULT("s", result),
3873                                 method_can_hybrid_sleep,
3874                                 SD_BUS_VTABLE_UNPRIVILEGED),
3875         SD_BUS_METHOD_WITH_ARGS("CanSuspendThenHibernate",
3876                                 SD_BUS_NO_ARGS,
3877                                 SD_BUS_RESULT("s", result),
3878                                 method_can_suspend_then_hibernate,
3879                                 SD_BUS_VTABLE_UNPRIVILEGED),
3880         SD_BUS_METHOD_WITH_ARGS("CanSleep",
3881                                 SD_BUS_NO_ARGS,
3882                                 SD_BUS_RESULT("s", result),
3883                                 method_can_sleep,
3884                                 SD_BUS_VTABLE_UNPRIVILEGED),
3885         SD_BUS_METHOD_WITH_ARGS("ScheduleShutdown",
3886                                 SD_BUS_ARGS("s", type, "t", usec),
3887                                 SD_BUS_NO_RESULT,
3888                                 method_schedule_shutdown,
3889                                 SD_BUS_VTABLE_UNPRIVILEGED),
3890         SD_BUS_METHOD_WITH_ARGS("CancelScheduledShutdown",
3891                                 SD_BUS_NO_ARGS,
3892                                 SD_BUS_RESULT("b", cancelled),
3893                                 method_cancel_scheduled_shutdown,
3894                                 SD_BUS_VTABLE_UNPRIVILEGED),
3895         SD_BUS_METHOD_WITH_ARGS("Inhibit",
3896                                 SD_BUS_ARGS("s", what, "s", who, "s", why, "s", mode),
3897                                 SD_BUS_RESULT("h", pipe_fd),
3898                                 method_inhibit,
3899                                 SD_BUS_VTABLE_UNPRIVILEGED),
3900         SD_BUS_METHOD_WITH_ARGS("CanRebootParameter",
3901                                 SD_BUS_NO_ARGS,
3902                                 SD_BUS_RESULT("s", result),
3903                                 method_can_reboot_parameter,
3904                                 SD_BUS_VTABLE_UNPRIVILEGED),
3905         SD_BUS_METHOD_WITH_ARGS("SetRebootParameter",
3906                                 SD_BUS_ARGS("s", parameter),
3907                                 SD_BUS_NO_RESULT,
3908                                 method_set_reboot_parameter,
3909                                 SD_BUS_VTABLE_UNPRIVILEGED),
3910         SD_BUS_METHOD_WITH_ARGS("CanRebootToFirmwareSetup",
3911                                 SD_BUS_NO_ARGS,
3912                                 SD_BUS_RESULT("s", result),
3913                                 method_can_reboot_to_firmware_setup,
3914                                 SD_BUS_VTABLE_UNPRIVILEGED),
3915         SD_BUS_METHOD_WITH_ARGS("SetRebootToFirmwareSetup",
3916                                 SD_BUS_ARGS("b", enable),
3917                                 SD_BUS_NO_RESULT,
3918                                 method_set_reboot_to_firmware_setup,
3919                                 SD_BUS_VTABLE_UNPRIVILEGED),
3920         SD_BUS_METHOD_WITH_ARGS("CanRebootToBootLoaderMenu",
3921                                 SD_BUS_NO_ARGS,
3922                                 SD_BUS_RESULT("s", result),
3923                                 method_can_reboot_to_boot_loader_menu,
3924                                 SD_BUS_VTABLE_UNPRIVILEGED),
3925         SD_BUS_METHOD_WITH_ARGS("SetRebootToBootLoaderMenu",
3926                                 SD_BUS_ARGS("t", timeout),
3927                                 SD_BUS_NO_RESULT,
3928                                 method_set_reboot_to_boot_loader_menu,
3929                                 SD_BUS_VTABLE_UNPRIVILEGED),
3930         SD_BUS_METHOD_WITH_ARGS("CanRebootToBootLoaderEntry",
3931                                 SD_BUS_NO_ARGS,
3932                                 SD_BUS_RESULT("s", result),
3933                                 method_can_reboot_to_boot_loader_entry,
3934                                 SD_BUS_VTABLE_UNPRIVILEGED),
3935         SD_BUS_METHOD_WITH_ARGS("SetRebootToBootLoaderEntry",
3936                                 SD_BUS_ARGS("s", boot_loader_entry),
3937                                 SD_BUS_NO_RESULT,
3938                                 method_set_reboot_to_boot_loader_entry,
3939                                 SD_BUS_VTABLE_UNPRIVILEGED),
3940         SD_BUS_METHOD_WITH_ARGS("SetWallMessage",
3941                                 SD_BUS_ARGS("s", wall_message, "b", enable),
3942                                 SD_BUS_NO_RESULT,
3943                                 method_set_wall_message,
3944                                 SD_BUS_VTABLE_UNPRIVILEGED),
3945
3946         SD_BUS_SIGNAL_WITH_ARGS("SessionNew",
3947                                 SD_BUS_ARGS("s", session_id, "o", object_path),
3948                                 0),
3949         SD_BUS_SIGNAL_WITH_ARGS("SessionRemoved",
3950                                 SD_BUS_ARGS("s", session_id, "o", object_path),
3951                                 0),
3952         SD_BUS_SIGNAL_WITH_ARGS("UserNew",
3953                                 SD_BUS_ARGS("u", uid, "o", object_path),
3954                                 0),
3955         SD_BUS_SIGNAL_WITH_ARGS("UserRemoved",
3956                                 SD_BUS_ARGS("u", uid, "o", object_path),
3957                                 0),
3958         SD_BUS_SIGNAL_WITH_ARGS("SeatNew",
3959                                 SD_BUS_ARGS("s", seat_id, "o", object_path),
3960                                 0),
3961         SD_BUS_SIGNAL_WITH_ARGS("SeatRemoved",
3962                                 SD_BUS_ARGS("s", seat_id, "o", object_path),
3963                                 0),
3964         SD_BUS_SIGNAL_WITH_ARGS("PrepareForShutdown",
3965                                 SD_BUS_ARGS("b", start),
3966                                 0),
3967         SD_BUS_SIGNAL_WITH_ARGS("PrepareForShutdownWithMetadata",
3968                                 SD_BUS_ARGS("b", start, "a{sv}", metadata),
3969                                 0),
3970         SD_BUS_SIGNAL_WITH_ARGS("PrepareForSleep",
3971                                 SD_BUS_ARGS("b", start),
3972                                 0),
3973
3974         SD_BUS_VTABLE_END
3975 };
3976
3977 const BusObjectImplementation manager_object = {
3978         "/org/freedesktop/login1",
3979         "org.freedesktop.login1.Manager",
3980         .vtables = BUS_VTABLES(manager_vtable),
3981         .children = BUS_IMPLEMENTATIONS(&seat_object,
3982                                         &session_object,
3983                                         &user_object),
3984 };
3985
3986 static int session_jobs_reply(Session *s, uint32_t jid, const char *unit, const char *result) {
3987         assert(s);
3988         assert(unit);
3989
3990         if (!s->started)
3991                 return 0;
3992
3993         if (result && !streq(result, "done")) {
3994                 _cleanup_(sd_bus_error_free) sd_bus_error e = SD_BUS_ERROR_NULL;
3995
3996                 sd_bus_error_setf(&e, BUS_ERROR_JOB_FAILED,
3997                                   "Job %u for unit '%s' failed with '%s'", jid, unit, result);
3998                 return session_send_create_reply(s, &e);
3999         }
4000
4001         return session_send_create_reply(s, NULL);
4002 }
4003
4004 int match_job_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
4005         const char *path, *result, *unit;
4006         Manager *m = ASSERT_PTR(userdata);
4007         Session *session;
4008         uint32_t id;
4009         User *user;
4010         int r;
4011
4012         assert(message);
4013
4014         r = sd_bus_message_read(message, "uoss", &id, &path, &unit, &result);
4015         if (r < 0) {
4016                 bus_log_parse_error(r);
4017                 return 0;
4018         }
4019
4020         if (m->action_job && streq(m->action_job, path)) {
4021                 assert(m->delayed_action);
4022                 log_info("Operation '%s' finished.", handle_action_to_string(m->delayed_action->handle));
4023
4024                 /* Tell people that they now may take a lock again */
4025                 (void) send_prepare_for(m, m->delayed_action, false);
4026
4027                 m->action_job = mfree(m->action_job);
4028                 m->delayed_action = NULL;
4029                 return 0;
4030         }
4031
4032         session = hashmap_get(m->session_units, unit);
4033         if (session) {
4034                 if (streq_ptr(path, session->scope_job)) {
4035                         session->scope_job = mfree(session->scope_job);
4036                         (void) session_jobs_reply(session, id, unit, result);
4037
4038                         session_save(session);
4039                         user_save(session->user);
4040                 }
4041
4042                 session_add_to_gc_queue(session);
4043         }
4044
4045         user = hashmap_get(m->user_units, unit);
4046         if (user) {
4047                 if (streq_ptr(path, user->service_job)) {
4048                         user->service_job = mfree(user->service_job);
4049
4050                         LIST_FOREACH(sessions_by_user, s, user->sessions)
4051                                 (void) session_jobs_reply(s, id, unit, NULL /* don't propagate user service failures to the client */);
4052
4053                         user_save(user);
4054                 }
4055
4056                 user_add_to_gc_queue(user);
4057         }
4058
4059         return 0;
4060 }
4061
4062 int match_unit_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
4063         const char *path, *unit;
4064         Manager *m = ASSERT_PTR(userdata);
4065         Session *session;
4066         User *user;
4067         int r;
4068
4069         assert(message);
4070
4071         r = sd_bus_message_read(message, "so", &unit, &path);
4072         if (r < 0) {
4073                 bus_log_parse_error(r);
4074                 return 0;
4075         }
4076
4077         session = hashmap_get(m->session_units, unit);
4078         if (session)
4079                 session_add_to_gc_queue(session);
4080
4081         user = hashmap_get(m->user_units, unit);
4082         if (user)
4083                 user_add_to_gc_queue(user);
4084
4085         return 0;
4086 }
4087
4088 int match_properties_changed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
4089         _cleanup_free_ char *unit = NULL;
4090         Manager *m = ASSERT_PTR(userdata);
4091         const char *path;
4092         Session *session;
4093         User *user;
4094         int r;
4095
4096         assert(message);
4097
4098         path = sd_bus_message_get_path(message);
4099         if (!path)
4100                 return 0;
4101
4102         r = unit_name_from_dbus_path(path, &unit);
4103         if (r == -EINVAL) /* not a unit */
4104                 return 0;
4105         if (r < 0) {
4106                 log_oom();
4107                 return 0;
4108         }
4109
4110         session = hashmap_get(m->session_units, unit);
4111         if (session)
4112                 session_add_to_gc_queue(session);
4113
4114         user = hashmap_get(m->user_units, unit);
4115         if (user)
4116                 user_add_to_gc_queue(user);
4117
4118         return 0;
4119 }
4120
4121 int match_reloading(sd_bus_message *message, void *userdata, sd_bus_error *error) {
4122         Manager *m = ASSERT_PTR(userdata);
4123         Session *session;
4124         int b, r;
4125
4126         assert(message);
4127
4128         r = sd_bus_message_read(message, "b", &b);
4129         if (r < 0) {
4130                 bus_log_parse_error(r);
4131                 return 0;
4132         }
4133
4134         if (b)
4135                 return 0;
4136
4137         /* systemd finished reloading, let's recheck all our sessions */
4138         log_debug("System manager has been reloaded, rechecking sessions...");
4139
4140         HASHMAP_FOREACH(session, m->sessions)
4141                 session_add_to_gc_queue(session);
4142
4143         return 0;
4144 }
4145
4146 int manager_send_changed(Manager *manager, const char *property, ...) {
4147         char **l;
4148
4149         assert(manager);
4150
4151         l = strv_from_stdarg_alloca(property);
4152
4153         return sd_bus_emit_properties_changed_strv(
4154                         manager->bus,
4155                         "/org/freedesktop/login1",
4156                         "org.freedesktop.login1.Manager",
4157                         l);
4158 }
4159
4160 static int strdup_job(sd_bus_message *reply, char **job) {
4161         const char *j;
4162         char *copy;
4163         int r;
4164
4165         r = sd_bus_message_read(reply, "o", &j);
4166         if (r < 0)
4167                 return r;
4168
4169         copy = strdup(j);
4170         if (!copy)
4171                 return -ENOMEM;
4172
4173         *job = copy;
4174         return 1;
4175 }
4176
4177 int manager_start_scope(
4178                 Manager *manager,
4179                 const char *scope,
4180                 const PidRef *pidref,
4181                 const char *slice,
4182                 const char *description,
4183                 char **wants,
4184                 char **after,
4185                 const char *requires_mounts_for,
4186                 sd_bus_message *more_properties,
4187                 sd_bus_error *error,
4188                 char **job) {
4189
4190         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
4191         int r;
4192
4193         assert(manager);
4194         assert(scope);
4195         assert(pidref_is_set(pidref));
4196         assert(job);
4197
4198         r = bus_message_new_method_call(manager->bus, &m, bus_systemd_mgr, "StartTransientUnit");
4199         if (r < 0)
4200                 return r;
4201
4202         r = sd_bus_message_append(m, "ss", strempty(scope), "fail");
4203         if (r < 0)
4204                 return r;
4205
4206         r = sd_bus_message_open_container(m, 'a', "(sv)");
4207         if (r < 0)
4208                 return r;
4209
4210         if (!isempty(slice)) {
4211                 r = sd_bus_message_append(m, "(sv)", "Slice", "s", slice);
4212                 if (r < 0)
4213                         return r;
4214         }
4215
4216         if (!isempty(description)) {
4217                 r = sd_bus_message_append(m, "(sv)", "Description", "s", description);
4218                 if (r < 0)
4219                         return r;
4220         }
4221
4222         STRV_FOREACH(i, wants) {
4223                 r = sd_bus_message_append(m, "(sv)", "Wants", "as", 1, *i);
4224                 if (r < 0)
4225                         return r;
4226         }
4227
4228         STRV_FOREACH(i, after) {
4229                 r = sd_bus_message_append(m, "(sv)", "After", "as", 1, *i);
4230                 if (r < 0)
4231                         return r;
4232         }
4233
4234         if (!empty_or_root(requires_mounts_for)) {
4235                 r = sd_bus_message_append(m, "(sv)", "RequiresMountsFor", "as", 1, requires_mounts_for);
4236                 if (r < 0)
4237                         return r;
4238         }
4239
4240         /* Make sure that the session shells are terminated with SIGHUP since bash and friends tend to ignore
4241          * SIGTERM */
4242         r = sd_bus_message_append(m, "(sv)", "SendSIGHUP", "b", true);
4243         if (r < 0)
4244                 return r;
4245
4246         r = bus_append_scope_pidref(m, pidref);
4247         if (r < 0)
4248                 return r;
4249
4250         /* For login session scopes, if a process is OOM killed by the kernel, *don't* terminate the rest of
4251            the scope */
4252         r = sd_bus_message_append(m, "(sv)", "OOMPolicy", "s", "continue");
4253         if (r < 0)
4254                 return r;
4255
4256         /* disable TasksMax= for the session scope, rely on the slice setting for it */
4257         r = sd_bus_message_append(m, "(sv)", "TasksMax", "t", UINT64_MAX);
4258         if (r < 0)
4259                 return bus_log_create_error(r);
4260
4261         if (more_properties) {
4262                 /* If TasksMax also appears here, it will overwrite the default value set above */
4263                 r = sd_bus_message_copy(m, more_properties, true);
4264                 if (r < 0)
4265                         return r;
4266         }
4267
4268         r = sd_bus_message_close_container(m);
4269         if (r < 0)
4270                 return r;
4271
4272         r = sd_bus_message_append(m, "a(sa(sv))", 0);
4273         if (r < 0)
4274                 return r;
4275
4276         r = sd_bus_call(manager->bus, m, 0, error, &reply);
4277         if (r < 0)
4278                 return r;
4279
4280         return strdup_job(reply, job);
4281 }
4282
4283 int manager_start_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) {
4284         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4285         int r;
4286
4287         assert(manager);
4288         assert(unit);
4289         assert(job);
4290
4291         r = bus_call_method(
4292                         manager->bus,
4293                         bus_systemd_mgr,
4294                         "StartUnit",
4295                         error,
4296                         &reply,
4297                         "ss", unit, "replace");
4298         if (r < 0)
4299                 return r;
4300
4301         return strdup_job(reply, job);
4302 }
4303
4304 int manager_stop_unit(Manager *manager, const char *unit, const char *job_mode, sd_bus_error *error, char **ret_job) {
4305         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4306         int r;
4307
4308         assert(manager);
4309         assert(unit);
4310         assert(ret_job);
4311
4312         r = bus_call_method(
4313                         manager->bus,
4314                         bus_systemd_mgr,
4315                         "StopUnit",
4316                         error,
4317                         &reply,
4318                         "ss", unit, job_mode ?: "fail");
4319         if (r < 0) {
4320                 if (sd_bus_error_has_names(error, BUS_ERROR_NO_SUCH_UNIT,
4321                                                   BUS_ERROR_LOAD_FAILED)) {
4322
4323                         *ret_job = NULL;
4324                         sd_bus_error_free(error);
4325                         return 0;
4326                 }
4327
4328                 return r;
4329         }
4330
4331         return strdup_job(reply, ret_job);
4332 }
4333
4334 int manager_abandon_scope(Manager *manager, const char *scope, sd_bus_error *ret_error) {
4335         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4336         _cleanup_free_ char *path = NULL;
4337         int r;
4338
4339         assert(manager);
4340         assert(scope);
4341
4342         path = unit_dbus_path_from_name(scope);
4343         if (!path)
4344                 return -ENOMEM;
4345
4346         r = sd_bus_call_method(
4347                         manager->bus,
4348                         "org.freedesktop.systemd1",
4349                         path,
4350                         "org.freedesktop.systemd1.Scope",
4351                         "Abandon",
4352                         &error,
4353                         NULL,
4354                         NULL);
4355         if (r < 0) {
4356                 if (sd_bus_error_has_names(&error, BUS_ERROR_NO_SUCH_UNIT,
4357                                                    BUS_ERROR_LOAD_FAILED,
4358                                                    BUS_ERROR_SCOPE_NOT_RUNNING))
4359                         return 0;
4360
4361                 sd_bus_error_move(ret_error, &error);
4362                 return r;
4363         }
4364
4365         return 1;
4366 }
4367
4368 int manager_kill_unit(Manager *manager, const char *unit, KillWho who, int signo, sd_bus_error *error) {
4369         assert(manager);
4370         assert(unit);
4371
4372         return bus_call_method(
4373                         manager->bus,
4374                         bus_systemd_mgr,
4375                         "KillUnit",
4376                         error,
4377                         NULL,
4378                         "ssi", unit, who == KILL_LEADER ? "main" : "all", signo);
4379 }
4380
4381 int manager_unit_is_active(Manager *manager, const char *unit, sd_bus_error *ret_error) {
4382         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4383         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4384         _cleanup_free_ char *path = NULL;
4385         const char *state;
4386         int r;
4387
4388         assert(manager);
4389         assert(unit);
4390
4391         path = unit_dbus_path_from_name(unit);
4392         if (!path)
4393                 return -ENOMEM;
4394
4395         r = sd_bus_get_property(
4396                         manager->bus,
4397                         "org.freedesktop.systemd1",
4398                         path,
4399                         "org.freedesktop.systemd1.Unit",
4400                         "ActiveState",
4401                         &error,
4402                         &reply,
4403                         "s");
4404         if (r < 0) {
4405                 /* systemd might have dropped off momentarily, let's
4406                  * not make this an error */
4407                 if (sd_bus_error_has_names(&error, SD_BUS_ERROR_NO_REPLY,
4408                                                    SD_BUS_ERROR_DISCONNECTED))
4409                         return true;
4410
4411                 /* If the unit is already unloaded then it's not
4412                  * active */
4413                 if (sd_bus_error_has_names(&error, BUS_ERROR_NO_SUCH_UNIT,
4414                                                    BUS_ERROR_LOAD_FAILED))
4415                         return false;
4416
4417                 sd_bus_error_move(ret_error, &error);
4418                 return r;
4419         }
4420
4421         r = sd_bus_message_read(reply, "s", &state);
4422         if (r < 0)
4423                 return r;
4424
4425         return !STR_IN_SET(state, "inactive", "failed");
4426 }
4427
4428 int manager_job_is_active(Manager *manager, const char *path, sd_bus_error *ret_error) {
4429         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4430         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4431         int r;
4432
4433         assert(manager);
4434         assert(path);
4435
4436         r = sd_bus_get_property(
4437                         manager->bus,
4438                         "org.freedesktop.systemd1",
4439                         path,
4440                         "org.freedesktop.systemd1.Job",
4441                         "State",
4442                         &error,
4443                         &reply,
4444                         "s");
4445         if (r < 0) {
4446                 if (sd_bus_error_has_names(&error, SD_BUS_ERROR_NO_REPLY,
4447                                                    SD_BUS_ERROR_DISCONNECTED))
4448                         return true;
4449
4450                 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_OBJECT))
4451                         return false;
4452
4453                 sd_bus_error_move(ret_error, &error);
4454                 return r;
4455         }
4456
4457         /* We don't actually care about the state really. The fact
4458          * that we could read the job state is enough for us */
4459
4460         return true;
4461 }