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                 int capability,
 240                 const char *action,
 241                 const char **details,
 242                 uid_t good_user,
 243                 sd_bus_error *e) {
 244
 245         const char *result;
 246         bool challenge;
 247         int r;
 248
 249         r = bus_test_polkit(message, capability, action, details, good_user, &challenge, e);
 250         if (r < 0)
 251                 return r;
 252
 253         if (r > 0)
 254                 result = "yes";
 255         else if (challenge)
 256                 result = "challenge";
 257         else
 258                 result = "no";
 259
 260         return sd_bus_reply_method_return(message, "s", result);
 261 }
 262
 263 static int property_get_idle_hint(
 264                 sd_bus *bus,
 265                 const char *path,
 266                 const char *interface,
 267                 const char *property,
 268                 sd_bus_message *reply,
 269                 void *userdata,
 270                 sd_bus_error *error) {
 271
 272         Manager *m = ASSERT_PTR(userdata);
 273
 274         assert(bus);
 275         assert(reply);
 276
 277         return sd_bus_message_append(reply, "b", manager_get_idle_hint(m, NULL) > 0);
 278 }
 279
 280 static int property_get_idle_since_hint(
 281                 sd_bus *bus,
 282                 const char *path,
 283                 const char *interface,
 284                 const char *property,
 285                 sd_bus_message *reply,
 286                 void *userdata,
 287                 sd_bus_error *error) {
 288
 289         Manager *m = ASSERT_PTR(userdata);
 290         dual_timestamp t = DUAL_TIMESTAMP_NULL;
 291
 292         assert(bus);
 293         assert(reply);
 294
 295         manager_get_idle_hint(m, &t);
 296
 297         return sd_bus_message_append(reply, "t", streq(property, "IdleSinceHint") ? t.realtime : t.monotonic);
 298 }
 299
 300 static int property_get_inhibited(
 301                 sd_bus *bus,
 302                 const char *path,
 303                 const char *interface,
 304                 const char *property,
 305                 sd_bus_message *reply,
 306                 void *userdata,
 307                 sd_bus_error *error) {
 308
 309         Manager *m = ASSERT_PTR(userdata);
 310         InhibitWhat w;
 311
 312         assert(bus);
 313         assert(reply);
 314
 315         w = manager_inhibit_what(m, streq(property, "BlockInhibited") ? INHIBIT_BLOCK : INHIBIT_DELAY);
 316
 317         return sd_bus_message_append(reply, "s", inhibit_what_to_string(w));
 318 }
 319
 320 static int property_get_preparing(
 321                 sd_bus *bus,
 322                 const char *path,
 323                 const char *interface,
 324                 const char *property,
 325                 sd_bus_message *reply,
 326                 void *userdata,
 327                 sd_bus_error *error) {
 328
 329         Manager *m = ASSERT_PTR(userdata);
 330         bool b = false;
 331
 332         assert(bus);
 333         assert(reply);
 334
 335         if (m->delayed_action) {
 336                 if (streq(property, "PreparingForShutdown"))
 337                         b = m->delayed_action->inhibit_what & INHIBIT_SHUTDOWN;
 338                 else
 339                         b = m->delayed_action->inhibit_what & INHIBIT_SLEEP;
 340         }
 341
 342         return sd_bus_message_append(reply, "b", b);
 343 }
 344
 345 static int property_get_sleep_operations(
 346                 sd_bus *bus,
 347                 const char *path,
 348                 const char *interface,
 349                 const char *property,
 350                 sd_bus_message *reply,
 351                 void *userdata,
 352                 sd_bus_error *error) {
 353
 354         Manager *m = ASSERT_PTR(userdata);
 355         _cleanup_strv_free_ char **actions = NULL;
 356         int r;
 357
 358         assert(bus);
 359         assert(reply);
 360
 361         r = handle_action_get_enabled_sleep_actions(m->handle_action_sleep_mask, &actions);
 362         if (r < 0)
 363                 return r;
 364
 365         return sd_bus_message_append_strv(reply, actions);
 366 }
 367
 368 static int property_get_scheduled_shutdown(
 369                 sd_bus *bus,
 370                 const char *path,
 371                 const char *interface,
 372                 const char *property,
 373                 sd_bus_message *reply,
 374                 void *userdata,
 375                 sd_bus_error *error) {
 376
 377         Manager *m = ASSERT_PTR(userdata);
 378         int r;
 379
 380         assert(bus);
 381         assert(reply);
 382
 383         r = sd_bus_message_open_container(reply, 'r', "st");
 384         if (r < 0)
 385                 return r;
 386
 387         r = sd_bus_message_append(
 388                         reply, "st",
 389                         handle_action_to_string(m->scheduled_shutdown_action),
 390                         m->scheduled_shutdown_timeout);
 391         if (r < 0)
 392                 return r;
 393
 394         return sd_bus_message_close_container(reply);
 395 }
 396
 397 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_handle_action, handle_action, HandleAction);
 398 static BUS_DEFINE_PROPERTY_GET(property_get_docked, "b", Manager, manager_is_docked_or_external_displays);
 399 static BUS_DEFINE_PROPERTY_GET(property_get_lid_closed, "b", Manager, manager_is_lid_closed);
 400 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_on_external_power, "b", manager_is_on_external_power());
 401 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_compat_user_tasks_max, "t", CGROUP_LIMIT_MAX);
 402 static BUS_DEFINE_PROPERTY_GET_REF(property_get_hashmap_size, "t", Hashmap *, (uint64_t) hashmap_size);
 403
 404 static int method_get_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 405         _cleanup_free_ char *p = NULL;
 406         Manager *m = ASSERT_PTR(userdata);
 407         const char *name;
 408         Session *session;
 409         int r;
 410
 411         assert(message);
 412
 413         r = sd_bus_message_read(message, "s", &name);
 414         if (r < 0)
 415                 return r;
 416
 417         r = manager_get_session_from_creds(m, message, name, error, &session);
 418         if (r < 0)
 419                 return r;
 420
 421         p = session_bus_path(session);
 422         if (!p)
 423                 return -ENOMEM;
 424
 425         return sd_bus_reply_method_return(message, "o", p);
 426 }
 427
 428 /* Get login session of a process.  This is not what you are looking for these days,
 429  * as apps may instead belong to a user service unit.  This includes terminal
 430  * emulators and hence command-line apps. */
 431 static int method_get_session_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 432         Manager *m = ASSERT_PTR(userdata);
 433         _cleanup_free_ char *p = NULL;
 434         Session *session = NULL;
 435         pid_t pid;
 436         int r;
 437
 438         assert(message);
 439
 440         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 441
 442         r = sd_bus_message_read(message, "u", &pid);
 443         if (r < 0)
 444                 return r;
 445         if (pid < 0)
 446                 return -EINVAL;
 447
 448         if (pid == 0) {
 449                 r = manager_get_session_from_creds(m, message, NULL, error, &session);
 450                 if (r < 0)
 451                         return r;
 452         } else {
 453                 r = manager_get_session_by_pidref(m, &PIDREF_MAKE_FROM_PID(pid), &session);
 454                 if (r < 0)
 455                         return r;
 456
 457                 if (!session)
 458                         return sd_bus_error_setf(error, BUS_ERROR_NO_SESSION_FOR_PID,
 459                                                  "PID "PID_FMT" does not belong to any known session", pid);
 460         }
 461
 462         p = session_bus_path(session);
 463         if (!p)
 464                 return -ENOMEM;
 465
 466         return sd_bus_reply_method_return(message, "o", p);
 467 }
 468
 469 static int method_get_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 470         _cleanup_free_ char *p = NULL;
 471         Manager *m = ASSERT_PTR(userdata);
 472         uint32_t uid;
 473         User *user;
 474         int r;
 475
 476         assert(message);
 477
 478         r = sd_bus_message_read(message, "u", &uid);
 479         if (r < 0)
 480                 return r;
 481
 482         r = manager_get_user_from_creds(m, message, uid, error, &user);
 483         if (r < 0)
 484                 return r;
 485
 486         p = user_bus_path(user);
 487         if (!p)
 488                 return -ENOMEM;
 489
 490         return sd_bus_reply_method_return(message, "o", p);
 491 }
 492
 493 static int method_get_user_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 494         _cleanup_free_ char *p = NULL;
 495         Manager *m = ASSERT_PTR(userdata);
 496         User *user = NULL;
 497         pid_t pid;
 498         int r;
 499
 500         assert(message);
 501
 502         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 503
 504         r = sd_bus_message_read(message, "u", &pid);
 505         if (r < 0)
 506                 return r;
 507         if (pid < 0)
 508                 return -EINVAL;
 509
 510         if (pid == 0) {
 511                 r = manager_get_user_from_creds(m, message, UID_INVALID, error, &user);
 512                 if (r < 0)
 513                         return r;
 514         } else {
 515                 r = manager_get_user_by_pid(m, pid, &user);
 516                 if (r < 0)
 517                         return r;
 518                 if (!user)
 519                         return sd_bus_error_setf(error, BUS_ERROR_NO_USER_FOR_PID,
 520                                                  "PID "PID_FMT" does not belong to any logged in user or lingering user",
 521                                                  pid);
 522         }
 523
 524         p = user_bus_path(user);
 525         if (!p)
 526                 return -ENOMEM;
 527
 528         return sd_bus_reply_method_return(message, "o", p);
 529 }
 530
 531 static int method_get_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 532         _cleanup_free_ char *p = NULL;
 533         Manager *m = ASSERT_PTR(userdata);
 534         const char *name;
 535         Seat *seat;
 536         int r;
 537
 538         assert(message);
 539
 540         r = sd_bus_message_read(message, "s", &name);
 541         if (r < 0)
 542                 return r;
 543
 544         r = manager_get_seat_from_creds(m, message, name, error, &seat);
 545         if (r < 0)
 546                 return r;
 547
 548         p = seat_bus_path(seat);
 549         if (!p)
 550                 return -ENOMEM;
 551
 552         return sd_bus_reply_method_return(message, "o", p);
 553 }
 554
 555 static int method_list_sessions(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 556         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 557         Manager *m = ASSERT_PTR(userdata);
 558         Session *session;
 559         int r;
 560
 561         assert(message);
 562
 563         r = sd_bus_message_new_method_return(message, &reply);
 564         if (r < 0)
 565                 return r;
 566
 567         r = sd_bus_message_open_container(reply, 'a', "(susso)");
 568         if (r < 0)
 569                 return r;
 570
 571         HASHMAP_FOREACH(session, m->sessions) {
 572                 _cleanup_free_ char *p = NULL;
 573
 574                 p = session_bus_path(session);
 575                 if (!p)
 576                         return -ENOMEM;
 577
 578                 r = sd_bus_message_append(reply, "(susso)",
 579                                           session->id,
 580                                           (uint32_t) session->user->user_record->uid,
 581                                           session->user->user_record->user_name,
 582                                           session->seat ? session->seat->id : "",
 583                                           p);
 584                 if (r < 0)
 585                         return r;
 586         }
 587
 588         r = sd_bus_message_close_container(reply);
 589         if (r < 0)
 590                 return r;
 591
 592         return sd_bus_send(NULL, reply, NULL);
 593 }
 594
 595 static int method_list_users(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 596         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 597         Manager *m = ASSERT_PTR(userdata);
 598         User *user;
 599         int r;
 600
 601         assert(message);
 602
 603         r = sd_bus_message_new_method_return(message, &reply);
 604         if (r < 0)
 605                 return r;
 606
 607         r = sd_bus_message_open_container(reply, 'a', "(uso)");
 608         if (r < 0)
 609                 return r;
 610
 611         HASHMAP_FOREACH(user, m->users) {
 612                 _cleanup_free_ char *p = NULL;
 613
 614                 p = user_bus_path(user);
 615                 if (!p)
 616                         return -ENOMEM;
 617
 618                 r = sd_bus_message_append(reply, "(uso)",
 619                                           (uint32_t) user->user_record->uid,
 620                                           user->user_record->user_name,
 621                                           p);
 622                 if (r < 0)
 623                         return r;
 624         }
 625
 626         r = sd_bus_message_close_container(reply);
 627         if (r < 0)
 628                 return r;
 629
 630         return sd_bus_send(NULL, reply, NULL);
 631 }
 632
 633 static int method_list_seats(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 634         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 635         Manager *m = ASSERT_PTR(userdata);
 636         Seat *seat;
 637         int r;
 638
 639         assert(message);
 640
 641         r = sd_bus_message_new_method_return(message, &reply);
 642         if (r < 0)
 643                 return r;
 644
 645         r = sd_bus_message_open_container(reply, 'a', "(so)");
 646         if (r < 0)
 647                 return r;
 648
 649         HASHMAP_FOREACH(seat, m->seats) {
 650                 _cleanup_free_ char *p = NULL;
 651
 652                 p = seat_bus_path(seat);
 653                 if (!p)
 654                         return -ENOMEM;
 655
 656                 r = sd_bus_message_append(reply, "(so)", seat->id, p);
 657                 if (r < 0)
 658                         return r;
 659         }
 660
 661         r = sd_bus_message_close_container(reply);
 662         if (r < 0)
 663                 return r;
 664
 665         return sd_bus_send(NULL, reply, NULL);
 666 }
 667
 668 static int method_list_inhibitors(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 669         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 670         Manager *m = ASSERT_PTR(userdata);
 671         Inhibitor *inhibitor;
 672         int r;
 673
 674         assert(message);
 675
 676         r = sd_bus_message_new_method_return(message, &reply);
 677         if (r < 0)
 678                 return r;
 679
 680         r = sd_bus_message_open_container(reply, 'a', "(ssssuu)");
 681         if (r < 0)
 682                 return r;
 683
 684         HASHMAP_FOREACH(inhibitor, m->inhibitors) {
 685
 686                 r = sd_bus_message_append(reply, "(ssssuu)",
 687                                           strempty(inhibit_what_to_string(inhibitor->what)),
 688                                           strempty(inhibitor->who),
 689                                           strempty(inhibitor->why),
 690                                           strempty(inhibit_mode_to_string(inhibitor->mode)),
 691                                           (uint32_t) inhibitor->uid,
 692                                           (uint32_t) inhibitor->pid.pid);
 693                 if (r < 0)
 694                         return r;
 695         }
 696
 697         r = sd_bus_message_close_container(reply);
 698         if (r < 0)
 699                 return r;
 700
 701         return sd_bus_send(NULL, reply, NULL);
 702 }
 703
 704 static int create_session(
 705                 sd_bus_message *message,
 706                 void *userdata,
 707                 sd_bus_error *error,
 708                 uid_t uid,
 709                 pid_t pid,
 710                 int pidfd,
 711                 const char *service,
 712                 const char *type,
 713                 const char *class,
 714                 const char *desktop,
 715                 const char *cseat,
 716                 uint32_t vtnr,
 717                 const char *tty,
 718                 const char *display,
 719                 int remote,
 720                 const char *remote_user,
 721                 const char *remote_host,
 722                 uint64_t flags) {
 723
 724         _cleanup_(pidref_done) PidRef leader = PIDREF_NULL;
 725         Manager *m = ASSERT_PTR(userdata);
 726         _cleanup_free_ char *id = NULL;
 727         Session *session = NULL;
 728         uint32_t audit_id = 0;
 729         User *user = NULL;
 730         Seat *seat = NULL;
 731         SessionType t;
 732         SessionClass c;
 733         int r;
 734
 735         assert(message);
 736
 737         if (!uid_is_valid(uid))
 738                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid UID");
 739
 740         if (flags != 0)
 741                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Flags must be zero.");
 742
 743         if (pidfd >= 0) {
 744                 r = pidref_set_pidfd(&leader, pidfd);
 745                 if (r < 0)
 746                         return r;
 747         } else if (pid == 0) {
 748                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 749                 pid_t p;
 750
 751                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 752                 if (r < 0)
 753                         return r;
 754
 755                 r = sd_bus_creds_get_pid(creds, &p);
 756                 if (r < 0)
 757                         return r;
 758
 759                 r = pidref_set_pid(&leader, p);
 760                 if (r < 0)
 761                         return r;
 762         } else {
 763                 assert(pid > 0);
 764
 765                 r = pidref_set_pid(&leader, pid);
 766                 if (r < 0)
 767                         return r;
 768         }
 769
 770         if (leader.pid == 1 || leader.pid == getpid_cached())
 771                 return sd_bus_error_set(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid leader PID");
 772
 773         if (isempty(type))
 774                 t = _SESSION_TYPE_INVALID;
 775         else {
 776                 t = session_type_from_string(type);
 777                 if (t < 0)
 778                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 779                                                  "Invalid session type %s", type);
 780         }
 781
 782         if (isempty(class))
 783                 c = _SESSION_CLASS_INVALID;
 784         else {
 785                 c = session_class_from_string(class);
 786                 if (c < 0)
 787                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 788                                                  "Invalid session class %s", class);
 789         }
 790
 791         if (isempty(desktop))
 792                 desktop = NULL;
 793         else {
 794                 if (!string_is_safe(desktop))
 795                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 796                                                  "Invalid desktop string %s", desktop);
 797         }
 798
 799         if (isempty(cseat))
 800                 seat = NULL;
 801         else {
 802                 seat = hashmap_get(m->seats, cseat);
 803                 if (!seat)
 804                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT,
 805                                                  "No seat '%s' known", cseat);
 806         }
 807
 808         if (tty_is_vc(tty)) {
 809                 int v;
 810
 811                 if (!seat)
 812                         seat = m->seat0;
 813                 else if (seat != m->seat0)
 814                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 815                                                  "TTY %s is virtual console but seat %s is not seat0", tty, seat->id);
 816
 817                 v = vtnr_from_tty(tty);
 818                 if (v <= 0)
 819                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 820                                                  "Cannot determine VT number from virtual console TTY %s", tty);
 821
 822                 if (vtnr == 0)
 823                         vtnr = (uint32_t) v;
 824                 else if (vtnr != (uint32_t) v)
 825                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 826                                                  "Specified TTY and VT number do not match");
 827
 828         } else if (tty_is_console(tty)) {
 829
 830                 if (!seat)
 831                         seat = m->seat0;
 832                 else if (seat != m->seat0)
 833                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 834                                                  "Console TTY specified but seat is not seat0");
 835
 836                 if (vtnr != 0)
 837                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 838                                                  "Console TTY specified but VT number is not 0");
 839         }
 840
 841         if (seat) {
 842                 if (seat_has_vts(seat)) {
 843                         if (vtnr <= 0 || vtnr > 63)
 844                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 845                                                          "VT number out of range");
 846                 } else {
 847                         if (vtnr != 0)
 848                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
 849                                                          "Seat has no VTs but VT number not 0");
 850                 }
 851         }
 852
 853         if (t == _SESSION_TYPE_INVALID) {
 854                 if (!isempty(display))
 855                         t = SESSION_X11;
 856                 else if (!isempty(tty))
 857                         t = SESSION_TTY;
 858                 else
 859                         t = SESSION_UNSPECIFIED;
 860         }
 861
 862         if (c == _SESSION_CLASS_INVALID) {
 863                 if (t == SESSION_UNSPECIFIED)
 864                         c = SESSION_BACKGROUND;
 865                 else
 866                         c = SESSION_USER;
 867         }
 868
 869         /* Check if we are already in a logind session. Or if we are in user@.service
 870          * which is a special PAM session that avoids creating a logind session. */
 871         r = manager_get_user_by_pid(m, leader.pid, NULL);
 872         if (r < 0)
 873                 return r;
 874         if (r > 0)
 875                 return sd_bus_error_setf(error, BUS_ERROR_SESSION_BUSY,
 876                                          "Already running in a session or user slice");
 877
 878         /*
 879          * Old gdm and lightdm start the user-session on the same VT as
 880          * the greeter session. But they destroy the greeter session
 881          * after the user-session and want the user-session to take
 882          * over the VT. We need to support this for
 883          * backwards-compatibility, so make sure we allow new sessions
 884          * on a VT that a greeter is running on. Furthermore, to allow
 885          * re-logins, we have to allow a greeter to take over a used VT for
 886          * the exact same reasons.
 887          */
 888         if (c != SESSION_GREETER &&
 889             vtnr > 0 &&
 890             vtnr < MALLOC_ELEMENTSOF(m->seat0->positions) &&
 891             m->seat0->positions[vtnr] &&
 892             m->seat0->positions[vtnr]->class != SESSION_GREETER)
 893                 return sd_bus_error_set(error, BUS_ERROR_SESSION_BUSY, "Already occupied by a session");
 894
 895         if (hashmap_size(m->sessions) >= m->sessions_max)
 896                 return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED,
 897                                          "Maximum number of sessions (%" PRIu64 ") reached, refusing further sessions.",
 898                                          m->sessions_max);
 899
 900         (void) audit_session_from_pid(leader.pid, &audit_id);
 901         if (audit_session_is_valid(audit_id)) {
 902                 /* Keep our session IDs and the audit session IDs in sync */
 903
 904                 if (asprintf(&id, "%"PRIu32, audit_id) < 0)
 905                         return -ENOMEM;
 906
 907                 /* Wut? There's already a session by this name and we didn't find it above? Weird, then let's
 908                  * not trust the audit data and let's better register a new ID */
 909                 if (hashmap_contains(m->sessions, id)) {
 910                         log_warning("Existing logind session ID %s used by new audit session, ignoring.", id);
 911                         audit_id = AUDIT_SESSION_INVALID;
 912                         id = mfree(id);
 913                 }
 914         }
 915
 916         if (!id) {
 917                 do {
 918                         id = mfree(id);
 919
 920                         if (asprintf(&id, "c%" PRIu64, ++m->session_counter) < 0)
 921                                 return -ENOMEM;
 922
 923                 } while (hashmap_contains(m->sessions, id));
 924         }
 925
 926         /* The generated names should not clash with 'auto' or 'self' */
 927         assert(!SESSION_IS_SELF(id));
 928         assert(!SESSION_IS_AUTO(id));
 929
 930         /* If we are not watching utmp already, try again */
 931         manager_reconnect_utmp(m);
 932
 933         r = manager_add_user_by_uid(m, uid, &user);
 934         if (r < 0)
 935                 goto fail;
 936
 937         r = manager_add_session(m, id, &session);
 938         if (r < 0)
 939                 goto fail;
 940
 941         session_set_user(session, user);
 942         r = session_set_leader_consume(session, TAKE_PIDREF(leader));
 943         if (r < 0)
 944                 goto fail;
 945
 946         session->original_type = session->type = t;
 947         session->class = c;
 948         session->remote = remote;
 949         session->vtnr = vtnr;
 950
 951         if (!isempty(tty)) {
 952                 session->tty = strdup(tty);
 953                 if (!session->tty) {
 954                         r = -ENOMEM;
 955                         goto fail;
 956                 }
 957
 958                 session->tty_validity = TTY_FROM_PAM;
 959         }
 960
 961         if (!isempty(display)) {
 962                 session->display = strdup(display);
 963                 if (!session->display) {
 964                         r = -ENOMEM;
 965                         goto fail;
 966                 }
 967         }
 968
 969         if (!isempty(remote_user)) {
 970                 session->remote_user = strdup(remote_user);
 971                 if (!session->remote_user) {
 972                         r = -ENOMEM;
 973                         goto fail;
 974                 }
 975         }
 976
 977         if (!isempty(remote_host)) {
 978                 session->remote_host = strdup(remote_host);
 979                 if (!session->remote_host) {
 980                         r = -ENOMEM;
 981                         goto fail;
 982                 }
 983         }
 984
 985         if (!isempty(service)) {
 986                 session->service = strdup(service);
 987                 if (!session->service) {
 988                         r = -ENOMEM;
 989                         goto fail;
 990                 }
 991         }
 992
 993         if (!isempty(desktop)) {
 994                 session->desktop = strdup(desktop);
 995                 if (!session->desktop) {
 996                         r = -ENOMEM;
 997                         goto fail;
 998                 }
 999         }
1000
1001         if (seat) {
1002                 r = seat_attach_session(seat, session);
1003                 if (r < 0)
1004                         goto fail;
1005         }
1006
1007         r = sd_bus_message_enter_container(message, 'a', "(sv)");
1008         if (r < 0)
1009                 goto fail;
1010
1011         r = session_start(session, message, error);
1012         if (r < 0)
1013                 goto fail;
1014
1015         r = sd_bus_message_exit_container(message);
1016         if (r < 0)
1017                 goto fail;
1018
1019         session->create_message = sd_bus_message_ref(message);
1020
1021         /* Now, let's wait until the slice unit and stuff got created. We send the reply back from
1022          * session_send_create_reply(). */
1023
1024         return 1;
1025
1026 fail:
1027         if (session)
1028                 session_add_to_gc_queue(session);
1029
1030         if (user)
1031                 user_add_to_gc_queue(user);
1032
1033         return r;
1034 }
1035
1036 static int method_create_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1037         const char *service, *type, *class, *cseat, *tty, *display, *remote_user, *remote_host, *desktop;
1038         pid_t leader;
1039         uid_t uid;
1040         int remote;
1041         uint32_t vtnr = 0;
1042         int r;
1043
1044         assert(message);
1045
1046         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
1047         assert_cc(sizeof(uid_t) == sizeof(uint32_t));
1048
1049         r = sd_bus_message_read(message,
1050                                 "uusssssussbss",
1051                                 &uid,
1052                                 &leader,
1053                                 &service,
1054                                 &type,
1055                                 &class,
1056                                 &desktop,
1057                                 &cseat,
1058                                 &vtnr,
1059                                 &tty,
1060                                 &display,
1061                                 &remote,
1062                                 &remote_user,
1063                                 &remote_host);
1064         if (r < 0)
1065                 return r;
1066
1067         return create_session(
1068                         message,
1069                         userdata,
1070                         error,
1071                         uid,
1072                         leader,
1073                         /* pidfd = */ -EBADF,
1074                         service,
1075                         type,
1076                         class,
1077                         desktop,
1078                         cseat,
1079                         vtnr,
1080                         tty,
1081                         display,
1082                         remote,
1083                         remote_user,
1084                         remote_host,
1085                         /* flags = */ 0);
1086 }
1087
1088 static int method_create_session_pidfd(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1089         const char *service, *type, *class, *cseat, *tty, *display, *remote_user, *remote_host, *desktop;
1090         int leaderfd = -EBADF;
1091         uid_t uid;
1092         int remote;
1093         uint32_t vtnr = 0;
1094         uint64_t flags;
1095         int r;
1096
1097         r = sd_bus_message_read(message,
1098                                 "uhsssssussbsst",
1099                                 &uid,
1100                                 &leaderfd,
1101                                 &service,
1102                                 &type,
1103                                 &class,
1104                                 &desktop,
1105                                 &cseat,
1106                                 &vtnr,
1107                                 &tty,
1108                                 &display,
1109                                 &remote,
1110                                 &remote_user,
1111                                 &remote_host,
1112                                 &flags);
1113         if (r < 0)
1114                 return r;
1115
1116         return create_session(
1117                         message,
1118                         userdata,
1119                         error,
1120                         uid,
1121                         /* pid = */ 0,
1122                         leaderfd,
1123                         service,
1124                         type,
1125                         class,
1126                         desktop,
1127                         cseat,
1128                         vtnr,
1129                         tty,
1130                         display,
1131                         remote,
1132                         remote_user,
1133                         remote_host,
1134                         flags);
1135 }
1136
1137 static int method_release_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1138         Manager *m = ASSERT_PTR(userdata);
1139         Session *session;
1140         const char *name;
1141         int r;
1142
1143         assert(message);
1144
1145         r = sd_bus_message_read(message, "s", &name);
1146         if (r < 0)
1147                 return r;
1148
1149         r = manager_get_session_from_creds(m, message, name, error, &session);
1150         if (r < 0)
1151                 return r;
1152
1153         r = session_release(session);
1154         if (r < 0)
1155                 return r;
1156
1157         return sd_bus_reply_method_return(message, NULL);
1158 }
1159
1160 static int method_activate_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1161         Manager *m = ASSERT_PTR(userdata);
1162         Session *session;
1163         const char *name;
1164         int r;
1165
1166         assert(message);
1167
1168         r = sd_bus_message_read(message, "s", &name);
1169         if (r < 0)
1170                 return r;
1171
1172         r = manager_get_session_from_creds(m, message, name, error, &session);
1173         if (r < 0)
1174                 return r;
1175
1176         /* PolicyKit is done by bus_session_method_activate() */
1177
1178         return bus_session_method_activate(message, session, error);
1179 }
1180
1181 static int method_activate_session_on_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1182         const char *session_name, *seat_name;
1183         Manager *m = ASSERT_PTR(userdata);
1184         Session *session;
1185         Seat *seat;
1186         int r;
1187
1188         assert(message);
1189
1190         /* Same as ActivateSession() but refuses to work if the seat doesn't match */
1191
1192         r = sd_bus_message_read(message, "ss", &session_name, &seat_name);
1193         if (r < 0)
1194                 return r;
1195
1196         r = manager_get_session_from_creds(m, message, session_name, error, &session);
1197         if (r < 0)
1198                 return r;
1199
1200         r = manager_get_seat_from_creds(m, message, seat_name, error, &seat);
1201         if (r < 0)
1202                 return r;
1203
1204         if (session->seat != seat)
1205                 return sd_bus_error_setf(error, BUS_ERROR_SESSION_NOT_ON_SEAT,
1206                                          "Session %s not on seat %s", session_name, seat_name);
1207
1208         r = check_polkit_chvt(message, m, error);
1209         if (r < 0)
1210                 return r;
1211         if (r == 0)
1212                 return 1; /* Will call us back */
1213
1214         r = session_activate(session);
1215         if (r < 0)
1216                 return r;
1217
1218         return sd_bus_reply_method_return(message, NULL);
1219 }
1220
1221 static int method_lock_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1222         Manager *m = ASSERT_PTR(userdata);
1223         Session *session;
1224         const char *name;
1225         int r;
1226
1227         assert(message);
1228
1229         r = sd_bus_message_read(message, "s", &name);
1230         if (r < 0)
1231                 return r;
1232
1233         r = manager_get_session_from_creds(m, message, name, error, &session);
1234         if (r < 0)
1235                 return r;
1236
1237         return bus_session_method_lock(message, session, error);
1238 }
1239
1240 static int method_lock_sessions(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1241         Manager *m = ASSERT_PTR(userdata);
1242         int r;
1243
1244         assert(message);
1245
1246         r = bus_verify_polkit_async(
1247                         message,
1248                         CAP_SYS_ADMIN,
1249                         "org.freedesktop.login1.lock-sessions",
1250                         NULL,
1251                         false,
1252                         UID_INVALID,
1253                         &m->polkit_registry,
1254                         error);
1255         if (r < 0)
1256                 return r;
1257         if (r == 0)
1258                 return 1; /* Will call us back */
1259
1260         r = session_send_lock_all(m, streq(sd_bus_message_get_member(message), "LockSessions"));
1261         if (r < 0)
1262                 return r;
1263
1264         return sd_bus_reply_method_return(message, NULL);
1265 }
1266
1267 static int method_kill_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1268         const char *name;
1269         Manager *m = ASSERT_PTR(userdata);
1270         Session *session;
1271         int r;
1272
1273         assert(message);
1274
1275         r = sd_bus_message_read(message, "s", &name);
1276         if (r < 0)
1277                 return r;
1278
1279         r = manager_get_session_from_creds(m, message, name, error, &session);
1280         if (r < 0)
1281                 return r;
1282
1283         return bus_session_method_kill(message, session, error);
1284 }
1285
1286 static int method_kill_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1287         Manager *m = ASSERT_PTR(userdata);
1288         uint32_t uid;
1289         User *user;
1290         int r;
1291
1292         assert(message);
1293
1294         r = sd_bus_message_read(message, "u", &uid);
1295         if (r < 0)
1296                 return r;
1297
1298         r = manager_get_user_from_creds(m, message, uid, error, &user);
1299         if (r < 0)
1300                 return r;
1301
1302         return bus_user_method_kill(message, user, error);
1303 }
1304
1305 static int method_terminate_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1306         Manager *m = ASSERT_PTR(userdata);
1307         const char *name;
1308         Session *session;
1309         int r;
1310
1311         assert(message);
1312
1313         r = sd_bus_message_read(message, "s", &name);
1314         if (r < 0)
1315                 return r;
1316
1317         r = manager_get_session_from_creds(m, message, name, error, &session);
1318         if (r < 0)
1319                 return r;
1320
1321         return bus_session_method_terminate(message, session, error);
1322 }
1323
1324 static int method_terminate_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1325         Manager *m = ASSERT_PTR(userdata);
1326         uint32_t uid;
1327         User *user;
1328         int r;
1329
1330         assert(message);
1331
1332         r = sd_bus_message_read(message, "u", &uid);
1333         if (r < 0)
1334                 return r;
1335
1336         r = manager_get_user_from_creds(m, message, uid, error, &user);
1337         if (r < 0)
1338                 return r;
1339
1340         return bus_user_method_terminate(message, user, error);
1341 }
1342
1343 static int method_terminate_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1344         Manager *m = ASSERT_PTR(userdata);
1345         const char *name;
1346         Seat *seat;
1347         int r;
1348
1349         assert(message);
1350
1351         r = sd_bus_message_read(message, "s", &name);
1352         if (r < 0)
1353                 return r;
1354
1355         r = manager_get_seat_from_creds(m, message, name, error, &seat);
1356         if (r < 0)
1357                 return r;
1358
1359         return bus_seat_method_terminate(message, seat, error);
1360 }
1361
1362 static int method_set_user_linger(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1363         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
1364         _cleanup_free_ char *cc = NULL;
1365         Manager *m = ASSERT_PTR(userdata);
1366         int r, b, interactive;
1367         struct passwd *pw;
1368         const char *path;
1369         uint32_t uid, auth_uid;
1370
1371         assert(message);
1372
1373         r = sd_bus_message_read(message, "ubb", &uid, &b, &interactive);
1374         if (r < 0)
1375                 return r;
1376
1377         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID |
1378                                                SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds);
1379         if (r < 0)
1380                 return r;
1381
1382         if (!uid_is_valid(uid)) {
1383                 /* Note that we get the owner UID of the session or user unit,
1384                  * not the actual client UID here! */
1385                 r = sd_bus_creds_get_owner_uid(creds, &uid);
1386                 if (r < 0)
1387                         return r;
1388         }
1389
1390         /* owner_uid is racy, so for authorization we must use euid */
1391         r = sd_bus_creds_get_euid(creds, &auth_uid);
1392         if (r < 0)
1393                 return r;
1394
1395         errno = 0;
1396         pw = getpwuid(uid);
1397         if (!pw)
1398                 return errno_or_else(ENOENT);
1399
1400         r = bus_verify_polkit_async(
1401                         message,
1402                         CAP_SYS_ADMIN,
1403                         uid == auth_uid ? "org.freedesktop.login1.set-self-linger" :
1404                                           "org.freedesktop.login1.set-user-linger",
1405                         NULL,
1406                         interactive,
1407                         UID_INVALID,
1408                         &m->polkit_registry,
1409                         error);
1410         if (r < 0)
1411                 return r;
1412         if (r == 0)
1413                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1414
1415         (void) mkdir_p_label("/var/lib/systemd", 0755);
1416         r = mkdir_safe_label("/var/lib/systemd/linger", 0755, 0, 0, MKDIR_WARN_MODE);
1417         if (r < 0)
1418                 return r;
1419
1420         cc = cescape(pw->pw_name);
1421         if (!cc)
1422                 return -ENOMEM;
1423
1424         path = strjoina("/var/lib/systemd/linger/", cc);
1425         if (b) {
1426                 User *u;
1427
1428                 r = touch(path);
1429                 if (r < 0)
1430                         return r;
1431
1432                 if (manager_add_user_by_uid(m, uid, &u) >= 0)
1433                         user_start(u);
1434
1435         } else {
1436                 User *u;
1437
1438                 r = unlink(path);
1439                 if (r < 0 && errno != ENOENT)
1440                         return -errno;
1441
1442                 u = hashmap_get(m->users, UID_TO_PTR(uid));
1443                 if (u)
1444                         user_add_to_gc_queue(u);
1445         }
1446
1447         return sd_bus_reply_method_return(message, NULL);
1448 }
1449
1450 static int trigger_device(Manager *m, sd_device *parent) {
1451         _cleanup_(sd_device_enumerator_unrefp) sd_device_enumerator *e = NULL;
1452         int r;
1453
1454         assert(m);
1455
1456         r = sd_device_enumerator_new(&e);
1457         if (r < 0)
1458                 return r;
1459
1460         r = sd_device_enumerator_allow_uninitialized(e);
1461         if (r < 0)
1462                 return r;
1463
1464         if (parent) {
1465                 r = sd_device_enumerator_add_match_parent(e, parent);
1466                 if (r < 0)
1467                         return r;
1468         }
1469
1470         FOREACH_DEVICE(e, d) {
1471                 r = sd_device_trigger(d, SD_DEVICE_CHANGE);
1472                 if (r < 0)
1473                         log_device_debug_errno(d, r, "Failed to trigger device, ignoring: %m");
1474         }
1475
1476         return 0;
1477 }
1478
1479 static int attach_device(Manager *m, const char *seat, const char *sysfs, sd_bus_error *error) {
1480         _cleanup_(sd_device_unrefp) sd_device *d = NULL;
1481         _cleanup_free_ char *rule = NULL, *file = NULL;
1482         const char *id_for_seat;
1483         int r;
1484
1485         assert(m);
1486         assert(seat);
1487         assert(sysfs);
1488
1489         r = sd_device_new_from_syspath(&d, sysfs);
1490         if (r < 0)
1491                 return sd_bus_error_set_errnof(error, r, "Failed to open device '%s': %m", sysfs);
1492
1493         if (sd_device_has_current_tag(d, "seat") <= 0)
1494                 return sd_bus_error_set_errnof(error, ENODEV, "Device '%s' lacks 'seat' udev tag.", sysfs);
1495
1496         if (sd_device_get_property_value(d, "ID_FOR_SEAT", &id_for_seat) < 0)
1497                 return sd_bus_error_set_errnof(error, ENODEV, "Device '%s' lacks 'ID_FOR_SEAT' udev property.", sysfs);
1498
1499         if (asprintf(&file, "/etc/udev/rules.d/72-seat-%s.rules", id_for_seat) < 0)
1500                 return -ENOMEM;
1501
1502         if (asprintf(&rule, "TAG==\"seat\", ENV{ID_FOR_SEAT}==\"%s\", ENV{ID_SEAT}=\"%s\"", id_for_seat, seat) < 0)
1503                 return -ENOMEM;
1504
1505         (void) mkdir_p_label("/etc/udev/rules.d", 0755);
1506         r = write_string_file_atomic_label(file, rule);
1507         if (r < 0)
1508                 return r;
1509
1510         return trigger_device(m, d);
1511 }
1512
1513 static int flush_devices(Manager *m) {
1514         _cleanup_closedir_ DIR *d = NULL;
1515
1516         assert(m);
1517
1518         d = opendir("/etc/udev/rules.d");
1519         if (!d) {
1520                 if (errno != ENOENT)
1521                         log_warning_errno(errno, "Failed to open /etc/udev/rules.d: %m");
1522         } else
1523                 FOREACH_DIRENT_ALL(de, d, break) {
1524                         if (!dirent_is_file(de))
1525                                 continue;
1526
1527                         if (!startswith(de->d_name, "72-seat-"))
1528                                 continue;
1529
1530                         if (!endswith(de->d_name, ".rules"))
1531                                 continue;
1532
1533                         if (unlinkat(dirfd(d), de->d_name, 0) < 0)
1534                                 log_warning_errno(errno, "Failed to unlink %s: %m", de->d_name);
1535                 }
1536
1537         return trigger_device(m, NULL);
1538 }
1539
1540 static int method_attach_device(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1541         const char *sysfs, *seat;
1542         Manager *m = ASSERT_PTR(userdata);
1543         int interactive, r;
1544
1545         assert(message);
1546
1547         r = sd_bus_message_read(message, "ssb", &seat, &sysfs, &interactive);
1548         if (r < 0)
1549                 return r;
1550
1551         if (!path_is_normalized(sysfs))
1552                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not normalized", sysfs);
1553         if (!path_startswith(sysfs, "/sys"))
1554                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not in /sys", sysfs);
1555
1556         if (SEAT_IS_SELF(seat) || SEAT_IS_AUTO(seat)) {
1557                 Seat *found;
1558
1559                 r = manager_get_seat_from_creds(m, message, seat, error, &found);
1560                 if (r < 0)
1561                         return r;
1562
1563                 seat = found->id;
1564
1565         } else if (!seat_name_is_valid(seat)) /* Note that a seat does not have to exist yet for this operation to succeed */
1566                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Seat name %s is not valid", seat);
1567
1568         r = bus_verify_polkit_async(
1569                         message,
1570                         CAP_SYS_ADMIN,
1571                         "org.freedesktop.login1.attach-device",
1572                         NULL,
1573                         interactive,
1574                         UID_INVALID,
1575                         &m->polkit_registry,
1576                         error);
1577         if (r < 0)
1578                 return r;
1579         if (r == 0)
1580                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1581
1582         r = attach_device(m, seat, sysfs, error);
1583         if (r < 0)
1584                 return r;
1585
1586         return sd_bus_reply_method_return(message, NULL);
1587 }
1588
1589 static int method_flush_devices(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1590         Manager *m = ASSERT_PTR(userdata);
1591         int interactive, r;
1592
1593         assert(message);
1594
1595         r = sd_bus_message_read(message, "b", &interactive);
1596         if (r < 0)
1597                 return r;
1598
1599         r = bus_verify_polkit_async(
1600                         message,
1601                         CAP_SYS_ADMIN,
1602                         "org.freedesktop.login1.flush-devices",
1603                         NULL,
1604                         interactive,
1605                         UID_INVALID,
1606                         &m->polkit_registry,
1607                         error);
1608         if (r < 0)
1609                 return r;
1610         if (r == 0)
1611                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1612
1613         r = flush_devices(m);
1614         if (r < 0)
1615                 return r;
1616
1617         return sd_bus_reply_method_return(message, NULL);
1618 }
1619
1620 static int have_multiple_sessions(
1621                 Manager *m,
1622                 uid_t uid) {
1623
1624         Session *session;
1625
1626         assert(m);
1627
1628         /* Check for other users' sessions. Greeter sessions do not
1629          * count, and non-login sessions do not count either. */
1630         HASHMAP_FOREACH(session, m->sessions)
1631                 if (session->class == SESSION_USER &&
1632                     session->user->user_record->uid != uid)
1633                         return true;
1634
1635         return false;
1636 }
1637
1638 static int bus_manager_log_shutdown(
1639                 Manager *m,
1640                 const HandleActionData *a) {
1641         assert(m);
1642         assert(a);
1643
1644         const char *message = a->message ?: "System is shutting down";
1645         const char *log_verb = a->log_verb ? strjoina("SHUTDOWN=", a->log_verb) : NULL;
1646
1647         return log_struct(LOG_NOTICE,
1648                           "MESSAGE_ID=%s", a->message_id ?: SD_MESSAGE_SHUTDOWN_STR,
1649                           LOG_MESSAGE("%s%s%s%s.",
1650                                       message,
1651                                       m->wall_message ? " (" : "",
1652                                       strempty(m->wall_message),
1653                                       m->wall_message ? ")" : ""),
1654                           log_verb);
1655 }
1656
1657 static int lid_switch_ignore_handler(sd_event_source *e, uint64_t usec, void *userdata) {
1658         Manager *m = ASSERT_PTR(userdata);
1659
1660         assert(e);
1661
1662         m->lid_switch_ignore_event_source = sd_event_source_unref(m->lid_switch_ignore_event_source);
1663         return 0;
1664 }
1665
1666 int manager_set_lid_switch_ignore(Manager *m, usec_t until) {
1667         int r;
1668
1669         assert(m);
1670
1671         if (until <= now(CLOCK_MONOTONIC))
1672                 return 0;
1673
1674         /* We want to ignore the lid switch for a while after each
1675          * suspend, and after boot-up. Hence let's install a timer for
1676          * this. As long as the event source exists we ignore the lid
1677          * switch. */
1678
1679         if (m->lid_switch_ignore_event_source) {
1680                 usec_t u;
1681
1682                 r = sd_event_source_get_time(m->lid_switch_ignore_event_source, &u);
1683                 if (r < 0)
1684                         return r;
1685
1686                 if (until <= u)
1687                         return 0;
1688
1689                 r = sd_event_source_set_time(m->lid_switch_ignore_event_source, until);
1690         } else
1691                 r = sd_event_add_time(
1692                                 m->event,
1693                                 &m->lid_switch_ignore_event_source,
1694                                 CLOCK_MONOTONIC,
1695                                 until, 0,
1696                                 lid_switch_ignore_handler, m);
1697
1698         return r;
1699 }
1700
1701 static int send_prepare_for(Manager *m, const HandleActionData *a, bool _active) {
1702         int k = 0, r, active = _active;
1703
1704         assert(m);
1705         assert(a);
1706         assert(IN_SET(a->inhibit_what, INHIBIT_SHUTDOWN, INHIBIT_SLEEP));
1707
1708         /* We need to send both old and new signal for backward compatibility. The newer one allows clients
1709          * to know which type of reboot is going to happen, as they might be doing different actions (e.g.:
1710          * on soft-reboot), and it is sent first, so that clients know that if they receive the old one
1711          * first then they don't have to wait for the new one, as it means it's not supported. So, do not
1712          * change the order here, as it is an API. */
1713         if (a->inhibit_what == INHIBIT_SHUTDOWN) {
1714                 k = sd_bus_emit_signal(m->bus,
1715                                        "/org/freedesktop/login1",
1716                                        "org.freedesktop.login1.Manager",
1717                                        "PrepareForShutdownWithMetadata",
1718                                        "ba{sv}",
1719                                        active,
1720                                        1,
1721                                        "type",
1722                                        "s",
1723                                        handle_action_to_string(a->handle));
1724                 if (k < 0)
1725                         log_debug_errno(k, "Failed to emit PrepareForShutdownWithMetadata(): %m");
1726         }
1727
1728         r = sd_bus_emit_signal(m->bus,
1729                                "/org/freedesktop/login1",
1730                                "org.freedesktop.login1.Manager",
1731                                a->inhibit_what == INHIBIT_SHUTDOWN ? "PrepareForShutdown" : "PrepareForSleep",
1732                                "b",
1733                                active);
1734         if (r < 0)
1735                 log_debug_errno(r, "Failed to emit PrepareForShutdown(): %m");
1736
1737         return RET_GATHER(k, r);
1738 }
1739
1740 static int execute_shutdown_or_sleep(
1741                 Manager *m,
1742                 const HandleActionData *a,
1743                 sd_bus_error *error) {
1744
1745         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1746         const char *p;
1747         int r;
1748
1749         assert(m);
1750         assert(a);
1751
1752         if (a->inhibit_what == INHIBIT_SHUTDOWN)
1753                 bus_manager_log_shutdown(m, a);
1754
1755         r = bus_call_method(
1756                         m->bus,
1757                         bus_systemd_mgr,
1758                         "StartUnit",
1759                         error,
1760                         &reply,
1761                         "ss", a->target, "replace-irreversibly");
1762         if (r < 0)
1763                 goto error;
1764
1765         r = sd_bus_message_read(reply, "o", &p);
1766         if (r < 0)
1767                 goto error;
1768
1769         r = free_and_strdup(&m->action_job, p);
1770         if (r < 0)
1771                 goto error;
1772
1773         m->delayed_action = a;
1774
1775         /* Make sure the lid switch is ignored for a while */
1776         manager_set_lid_switch_ignore(m, usec_add(now(CLOCK_MONOTONIC), m->holdoff_timeout_usec));
1777
1778         return 0;
1779
1780 error:
1781         /* Tell people that they now may take a lock again */
1782         (void) send_prepare_for(m, a, false);
1783
1784         return r;
1785 }
1786
1787 int manager_dispatch_delayed(Manager *manager, bool timeout) {
1788         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1789         Inhibitor *offending = NULL;
1790         int r;
1791
1792         assert(manager);
1793
1794         if (!manager->delayed_action || manager->action_job)
1795                 return 0;
1796
1797         if (manager_is_inhibited(manager, manager->delayed_action->inhibit_what, INHIBIT_DELAY, NULL, false, false, 0, &offending)) {
1798                 _cleanup_free_ char *comm = NULL, *u = NULL;
1799
1800                 if (!timeout)
1801                         return 0;
1802
1803                 (void) pidref_get_comm(&offending->pid, &comm);
1804                 u = uid_to_name(offending->uid);
1805
1806                 log_notice("Delay lock is active (UID "UID_FMT"/%s, PID "PID_FMT"/%s) but inhibitor timeout is reached.",
1807                            offending->uid, strna(u),
1808                            offending->pid.pid, strna(comm));
1809         }
1810
1811         /* Actually do the operation */
1812         r = execute_shutdown_or_sleep(manager, manager->delayed_action, &error);
1813         if (r < 0) {
1814                 log_warning("Error during inhibitor-delayed operation (already returned success to client): %s",
1815                             bus_error_message(&error, r));
1816
1817                 manager->delayed_action = NULL;
1818         }
1819
1820         return 1; /* We did some work. */
1821 }
1822
1823 static int manager_inhibit_timeout_handler(
1824                         sd_event_source *s,
1825                         uint64_t usec,
1826                         void *userdata) {
1827
1828         Manager *manager = ASSERT_PTR(userdata);
1829
1830         assert(manager->inhibit_timeout_source == s);
1831
1832         return manager_dispatch_delayed(manager, true);
1833 }
1834
1835 static int delay_shutdown_or_sleep(
1836                 Manager *m,
1837                 const HandleActionData *a) {
1838
1839         int r;
1840
1841         assert(m);
1842         assert(a);
1843
1844         if (m->inhibit_timeout_source) {
1845                 r = sd_event_source_set_time_relative(m->inhibit_timeout_source, m->inhibit_delay_max);
1846                 if (r < 0)
1847                         return log_error_errno(r, "sd_event_source_set_time_relative() failed: %m");
1848
1849                 r = sd_event_source_set_enabled(m->inhibit_timeout_source, SD_EVENT_ONESHOT);
1850                 if (r < 0)
1851                         return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
1852         } else {
1853                 r = sd_event_add_time_relative(
1854                                 m->event,
1855                                 &m->inhibit_timeout_source,
1856                                 CLOCK_MONOTONIC, m->inhibit_delay_max, 0,
1857                                 manager_inhibit_timeout_handler, m);
1858                 if (r < 0)
1859                         return r;
1860         }
1861
1862         m->delayed_action = a;
1863
1864         return 0;
1865 }
1866
1867 int bus_manager_shutdown_or_sleep_now_or_later(
1868                 Manager *m,
1869                 const HandleActionData *a,
1870                 sd_bus_error *error) {
1871
1872         _cleanup_free_ char *load_state = NULL;
1873         bool delayed;
1874         int r;
1875
1876         assert(m);
1877         assert(a);
1878         assert(!m->action_job);
1879
1880         r = unit_load_state(m->bus, a->target, &load_state);
1881         if (r < 0)
1882                 return r;
1883
1884         if (!streq(load_state, "loaded"))
1885                 return log_notice_errno(SYNTHETIC_ERRNO(EACCES),
1886                                         "Unit %s is %s, refusing operation.",
1887                                         a->target, load_state);
1888
1889         /* Tell everybody to prepare for shutdown/sleep */
1890         (void) send_prepare_for(m, a, true);
1891
1892         delayed =
1893                 m->inhibit_delay_max > 0 &&
1894                 manager_is_inhibited(m, a->inhibit_what, INHIBIT_DELAY, NULL, false, false, 0, NULL);
1895
1896         if (delayed)
1897                 /* Shutdown is delayed, keep in mind what we
1898                  * want to do, and start a timeout */
1899                 r = delay_shutdown_or_sleep(m, a);
1900         else
1901                 /* Shutdown is not delayed, execute it
1902                  * immediately */
1903                 r = execute_shutdown_or_sleep(m, a, error);
1904
1905         return r;
1906 }
1907
1908 static int verify_shutdown_creds(
1909                 Manager *m,
1910                 sd_bus_message *message,
1911                 const HandleActionData *a,
1912                 uint64_t flags,
1913                 sd_bus_error *error) {
1914
1915         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
1916         bool multiple_sessions, blocked, interactive;
1917         uid_t uid;
1918         int r;
1919
1920         assert(m);
1921         assert(a);
1922         assert(message);
1923
1924         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
1925         if (r < 0)
1926                 return r;
1927
1928         r = sd_bus_creds_get_euid(creds, &uid);
1929         if (r < 0)
1930                 return r;
1931
1932         r = have_multiple_sessions(m, uid);
1933         if (r < 0)
1934                 return r;
1935
1936         multiple_sessions = r > 0;
1937         blocked = manager_is_inhibited(m, a->inhibit_what, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
1938         interactive = flags & SD_LOGIND_INTERACTIVE;
1939
1940         if (multiple_sessions) {
1941                 r = bus_verify_polkit_async(
1942                                 message,
1943                                 CAP_SYS_BOOT,
1944                                 a->polkit_action_multiple_sessions,
1945                                 NULL,
1946                                 interactive,
1947                                 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(message,
1963                                 CAP_SYS_BOOT,
1964                                 a->polkit_action_ignore_inhibit,
1965                                 NULL,
1966                                 interactive,
1967                                 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(message,
1978                                 CAP_SYS_BOOT,
1979                                 a->polkit_action,
1980                                 NULL,
1981                                 interactive,
1982                                 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                         CAP_SYS_BOOT,
2533                         a->polkit_action,
2534                         NULL,
2535                         false,
2536                         UID_INVALID,
2537                         &m->polkit_registry,
2538                         error);
2539         if (r < 0)
2540                 return r;
2541         if (r == 0)
2542                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2543
2544         if (m->enable_wall_messages) {
2545                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2546                 const char *tty = NULL;
2547                 uid_t uid = 0;
2548
2549                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
2550                 if (r >= 0) {
2551                         (void) sd_bus_creds_get_uid(creds, &uid);
2552                         (void) sd_bus_creds_get_tty(creds, &tty);
2553                 }
2554
2555                 _cleanup_free_ char *username = uid_to_name(uid);
2556
2557                 log_struct(LOG_INFO,
2558                            LOG_MESSAGE("System shutdown has been cancelled"),
2559                            "ACTION=%s", handle_action_to_string(a->handle),
2560                            "MESSAGE_ID=" SD_MESSAGE_SHUTDOWN_CANCELED_STR,
2561                            username ? "OPERATOR=%s" : NULL, username);
2562
2563                 (void) wall("System shutdown has been cancelled",
2564                             username, tty, logind_wall_tty_filter, m);
2565         }
2566
2567         reset_scheduled_shutdown(m);
2568
2569         return sd_bus_reply_method_return(message, "b", true);
2570 }
2571
2572 static int method_can_shutdown_or_sleep(
2573                 Manager *m,
2574                 sd_bus_message *message,
2575                 HandleAction action,
2576                 sd_bus_error *error) {
2577
2578         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2579         bool multiple_sessions, challenge, blocked;
2580         const HandleActionData *a;
2581         const char *result = NULL;
2582         uid_t uid;
2583         int r;
2584
2585         assert(m);
2586         assert(message);
2587         assert(HANDLE_ACTION_IS_SHUTDOWN(action) || HANDLE_ACTION_IS_SLEEP(action));
2588
2589         if (action == HANDLE_SLEEP) {
2590                 HandleAction selected;
2591
2592                 selected = handle_action_sleep_select(m->handle_action_sleep_mask);
2593                 if (selected < 0)
2594                         return sd_bus_reply_method_return(message, "s", "na");
2595
2596                 assert_se(a = handle_action_lookup(selected));
2597
2598         } else if (HANDLE_ACTION_IS_SLEEP(action)) {
2599                 SleepSupport support;
2600
2601                 assert_se(a = handle_action_lookup(action));
2602
2603                 assert(a->sleep_operation >= 0);
2604                 assert(a->sleep_operation < _SLEEP_OPERATION_MAX);
2605
2606                 r = sleep_supported_full(a->sleep_operation, &support);
2607                 if (r < 0)
2608                         return r;
2609                 if (r == 0)
2610                         return sd_bus_reply_method_return(message, "s", support == SLEEP_DISABLED ? "no" : "na");
2611         } else
2612                 assert_se(a = handle_action_lookup(action));
2613
2614         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
2615         if (r < 0)
2616                 return r;
2617
2618         r = sd_bus_creds_get_euid(creds, &uid);
2619         if (r < 0)
2620                 return r;
2621
2622         r = have_multiple_sessions(m, uid);
2623         if (r < 0)
2624                 return r;
2625
2626         multiple_sessions = r > 0;
2627         blocked = manager_is_inhibited(m, a->inhibit_what, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
2628
2629         if (a->target) {
2630                 _cleanup_free_ char *load_state = NULL;
2631
2632                 r = unit_load_state(m->bus, a->target, &load_state);
2633                 if (r < 0)
2634                         return r;
2635
2636                 if (!streq(load_state, "loaded")) {
2637                         result = "no";
2638                         goto finish;
2639                 }
2640         }
2641
2642         if (multiple_sessions) {
2643                 r = bus_test_polkit(message, CAP_SYS_BOOT, a->polkit_action_multiple_sessions, NULL, UID_INVALID, &challenge, error);
2644                 if (r < 0)
2645                         return r;
2646
2647                 if (r > 0)
2648                         result = "yes";
2649                 else if (challenge)
2650                         result = "challenge";
2651                 else
2652                         result = "no";
2653         }
2654
2655         if (blocked) {
2656                 r = bus_test_polkit(message, CAP_SYS_BOOT, a->polkit_action_ignore_inhibit, NULL, UID_INVALID, &challenge, error);
2657                 if (r < 0)
2658                         return r;
2659
2660                 if (r > 0) {
2661                         if (!result)
2662                                 result = "yes";
2663                 } else if (challenge) {
2664                         if (!result || streq(result, "yes"))
2665                                 result = "challenge";
2666                 } else
2667                         result = "no";
2668         }
2669
2670         if (!multiple_sessions && !blocked) {
2671                 /* If neither inhibit nor multiple sessions
2672                  * apply then just check the normal policy */
2673
2674                 r = bus_test_polkit(message, CAP_SYS_BOOT, a->polkit_action, NULL, UID_INVALID, &challenge, error);
2675                 if (r < 0)
2676                         return r;
2677
2678                 if (r > 0)
2679                         result = "yes";
2680                 else if (challenge)
2681                         result = "challenge";
2682                 else
2683                         result = "no";
2684         }
2685
2686  finish:
2687         return sd_bus_reply_method_return(message, "s", result);
2688 }
2689
2690 static int method_can_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2691         Manager *m = userdata;
2692
2693         return method_can_shutdown_or_sleep(m, message, HANDLE_POWEROFF, error);
2694 }
2695
2696 static int method_can_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2697         Manager *m = userdata;
2698
2699         return method_can_shutdown_or_sleep(m, message, HANDLE_REBOOT, error);
2700 }
2701
2702 static int method_can_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2703         Manager *m = userdata;
2704
2705         return method_can_shutdown_or_sleep(m, message, HANDLE_HALT, error);
2706 }
2707
2708 static int method_can_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2709         Manager *m = userdata;
2710
2711         return method_can_shutdown_or_sleep(m, message, HANDLE_SUSPEND, error);
2712 }
2713
2714 static int method_can_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2715         Manager *m = userdata;
2716
2717         return method_can_shutdown_or_sleep(m, message, HANDLE_HIBERNATE, error);
2718 }
2719
2720 static int method_can_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2721         Manager *m = userdata;
2722
2723         return method_can_shutdown_or_sleep(m, message, HANDLE_HYBRID_SLEEP, error);
2724 }
2725
2726 static int method_can_suspend_then_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2727         Manager *m = userdata;
2728
2729         return method_can_shutdown_or_sleep(m, message, HANDLE_SUSPEND_THEN_HIBERNATE, error);
2730 }
2731
2732 static int method_can_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2733         Manager *m = userdata;
2734
2735         return method_can_shutdown_or_sleep(m, message, HANDLE_SLEEP, error);
2736 }
2737
2738 static int property_get_reboot_parameter(
2739                 sd_bus *bus,
2740                 const char *path,
2741                 const char *interface,
2742                 const char *property,
2743                 sd_bus_message *reply,
2744                 void *userdata,
2745                 sd_bus_error *error) {
2746         _cleanup_free_ char *parameter = NULL;
2747         int r;
2748
2749         assert(bus);
2750         assert(reply);
2751         assert(userdata);
2752
2753         r = read_reboot_parameter(&parameter);
2754         if (r < 0)
2755                 return r;
2756
2757         return sd_bus_message_append(reply, "s", parameter);
2758 }
2759
2760 static int method_set_reboot_parameter(
2761                 sd_bus_message *message,
2762                 void *userdata,
2763                 sd_bus_error *error) {
2764
2765         Manager *m = ASSERT_PTR(userdata);
2766         const char *arg;
2767         int r;
2768
2769         assert(message);
2770
2771         r = sd_bus_message_read(message, "s", &arg);
2772         if (r < 0)
2773                 return r;
2774
2775         r = detect_container();
2776         if (r < 0)
2777                 return r;
2778         if (r > 0)
2779                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED,
2780                                          "Reboot parameter not supported in containers, refusing.");
2781
2782         r = bus_verify_polkit_async(message,
2783                                     CAP_SYS_ADMIN,
2784                                     "org.freedesktop.login1.set-reboot-parameter",
2785                                     NULL,
2786                                     false,
2787                                     UID_INVALID,
2788                                     &m->polkit_registry,
2789                                     error);
2790         if (r < 0)
2791                 return r;
2792         if (r == 0)
2793                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2794
2795         r = update_reboot_parameter_and_warn(arg, false);
2796         if (r < 0)
2797                 return r;
2798
2799         return sd_bus_reply_method_return(message, NULL);
2800 }
2801
2802 static int method_can_reboot_parameter(
2803                 sd_bus_message *message,
2804                 void *userdata,
2805                 sd_bus_error *error) {
2806
2807         _unused_ Manager *m = ASSERT_PTR(userdata);
2808         int r;
2809
2810         assert(message);
2811
2812         r = detect_container();
2813         if (r < 0)
2814                 return r;
2815         if (r > 0) /* Inside containers, specifying a reboot parameter, doesn't make much sense */
2816                 return sd_bus_reply_method_return(message, "s", "na");
2817
2818         return return_test_polkit(
2819                         message,
2820                         CAP_SYS_ADMIN,
2821                         "org.freedesktop.login1.set-reboot-parameter",
2822                         NULL,
2823                         UID_INVALID,
2824                         error);
2825 }
2826
2827 static int property_get_reboot_to_firmware_setup(
2828                 sd_bus *bus,
2829                 const char *path,
2830                 const char *interface,
2831                 const char *property,
2832                 sd_bus_message *reply,
2833                 void *userdata,
2834                 sd_bus_error *error) {
2835         int r;
2836
2837         assert(bus);
2838         assert(reply);
2839         assert(userdata);
2840
2841         r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
2842         if (r == -ENXIO) {
2843                 /* EFI case: let's see what is currently configured in the EFI variables */
2844                 r = efi_get_reboot_to_firmware();
2845                 if (r < 0 && r != -EOPNOTSUPP)
2846                         log_warning_errno(r, "Failed to determine reboot-to-firmware-setup state: %m");
2847         } else if (r < 0)
2848                 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
2849         else if (r > 0) {
2850                 /* Non-EFI case: let's see whether /run/systemd/reboot-to-firmware-setup exists. */
2851                 if (access("/run/systemd/reboot-to-firmware-setup", F_OK) < 0) {
2852                         if (errno != ENOENT)
2853                                 log_warning_errno(errno, "Failed to check whether /run/systemd/reboot-to-firmware-setup exists: %m");
2854
2855                         r = false;
2856                 } else
2857                         r = true;
2858         }
2859
2860         return sd_bus_message_append(reply, "b", r > 0);
2861 }
2862
2863 static int method_set_reboot_to_firmware_setup(
2864                 sd_bus_message *message,
2865                 void *userdata,
2866                 sd_bus_error *error) {
2867
2868         Manager *m = ASSERT_PTR(userdata);
2869         bool use_efi;
2870         int b, r;
2871
2872         assert(message);
2873
2874         r = sd_bus_message_read(message, "b", &b);
2875         if (r < 0)
2876                 return r;
2877
2878         r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
2879         if (r == -ENXIO) {
2880                 /* EFI case: let's see what the firmware supports */
2881
2882                 r = efi_reboot_to_firmware_supported();
2883                 if (r == -EOPNOTSUPP)
2884                         return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Firmware does not support boot into firmware.");
2885                 if (r < 0)
2886                         return r;
2887
2888                 use_efi = true;
2889
2890         } else if (r <= 0) {
2891                 /* non-EFI case: $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP is set to off */
2892
2893                 if (r < 0)
2894                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
2895
2896                 return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Firmware does not support boot into firmware.");
2897         } else
2898                 /* non-EFI case: $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP is set to on */
2899                 use_efi = false;
2900
2901         r = bus_verify_polkit_async(message,
2902                                     CAP_SYS_ADMIN,
2903                                     "org.freedesktop.login1.set-reboot-to-firmware-setup",
2904                                     NULL,
2905                                     false,
2906                                     UID_INVALID,
2907                                     &m->polkit_registry,
2908                                     error);
2909         if (r < 0)
2910                 return r;
2911         if (r == 0)
2912                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2913
2914         if (use_efi) {
2915                 r = efi_set_reboot_to_firmware(b);
2916                 if (r < 0)
2917                         return r;
2918         } else {
2919                 if (b) {
2920                         r = touch("/run/systemd/reboot-to-firmware-setup");
2921                         if (r < 0)
2922                                 return r;
2923                 } else {
2924                         if (unlink("/run/systemd/reboot-to-firmware-setup") < 0 && errno != ENOENT)
2925                                 return -errno;
2926                 }
2927         }
2928
2929         return sd_bus_reply_method_return(message, NULL);
2930 }
2931
2932 static int method_can_reboot_to_firmware_setup(
2933                 sd_bus_message *message,
2934                 void *userdata,
2935                 sd_bus_error *error) {
2936
2937         _unused_ Manager *m = ASSERT_PTR(userdata);
2938         int r;
2939
2940         assert(message);
2941
2942         r = getenv_bool("SYSTEMD_REBOOT_TO_FIRMWARE_SETUP");
2943         if (r == -ENXIO) {
2944                 /* EFI case: let's see what the firmware supports */
2945
2946                 r = efi_reboot_to_firmware_supported();
2947                 if (r < 0) {
2948                         if (r != -EOPNOTSUPP)
2949                                 log_warning_errno(r, "Failed to determine whether reboot to firmware is supported: %m");
2950
2951                         return sd_bus_reply_method_return(message, "s", "na");
2952                 }
2953
2954         } else if (r <= 0) {
2955                 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP */
2956
2957                 if (r < 0)
2958                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_FIRMWARE_SETUP: %m");
2959
2960                 return sd_bus_reply_method_return(message, "s", "na");
2961         }
2962
2963         return return_test_polkit(
2964                         message,
2965                         CAP_SYS_ADMIN,
2966                         "org.freedesktop.login1.set-reboot-to-firmware-setup",
2967                         NULL,
2968                         UID_INVALID,
2969                         error);
2970 }
2971
2972 static int property_get_reboot_to_boot_loader_menu(
2973                 sd_bus *bus,
2974                 const char *path,
2975                 const char *interface,
2976                 const char *property,
2977                 sd_bus_message *reply,
2978                 void *userdata,
2979                 sd_bus_error *error) {
2980
2981         uint64_t x = UINT64_MAX;
2982         int r;
2983
2984         assert(bus);
2985         assert(reply);
2986         assert(userdata);
2987
2988         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
2989         if (r == -ENXIO) {
2990                 /* EFI case: returns the current value of LoaderConfigTimeoutOneShot. Three cases are distinguished:
2991                  *
2992                  *     1. Variable not set, boot into boot loader menu is not enabled (we return UINT64_MAX to the user)
2993                  *     2. Variable set to "0", boot into boot loader menu is enabled with no timeout (we return 0 to the user)
2994                  *     3. Variable set to numeric value formatted in ASCII, boot into boot loader menu with the specified timeout in seconds
2995                  */
2996
2997                 r = efi_loader_get_config_timeout_one_shot(&x);
2998                 if (r < 0) {
2999                         if (r != -ENOENT)
3000                                 log_warning_errno(r, "Failed to read LoaderConfigTimeoutOneShot variable, ignoring: %m");
3001                 }
3002
3003         } else if (r < 0)
3004                 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
3005         else if (r > 0) {
3006                 _cleanup_free_ char *v = NULL;
3007
3008                 /* Non-EFI case, let's process /run/systemd/reboot-to-boot-loader-menu. */
3009
3010                 r = read_one_line_file("/run/systemd/reboot-to-boot-loader-menu", &v);
3011                 if (r < 0) {
3012                         if (r != -ENOENT)
3013                                 log_warning_errno(r, "Failed to read /run/systemd/reboot-to-boot-loader-menu: %m");
3014                 } else {
3015                         r = safe_atou64(v, &x);
3016                         if (r < 0)
3017                                 log_warning_errno(r, "Failed to parse /run/systemd/reboot-to-boot-loader-menu: %m");
3018                 }
3019         }
3020
3021         return sd_bus_message_append(reply, "t", x);
3022 }
3023
3024 static int method_set_reboot_to_boot_loader_menu(
3025                 sd_bus_message *message,
3026                 void *userdata,
3027                 sd_bus_error *error) {
3028
3029         Manager *m = ASSERT_PTR(userdata);
3030         bool use_efi;
3031         uint64_t x;
3032         int r;
3033
3034         assert(message);
3035
3036         r = sd_bus_message_read(message, "t", &x);
3037         if (r < 0)
3038                 return r;
3039
3040         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
3041         if (r == -ENXIO) {
3042                 uint64_t features;
3043
3044                 /* EFI case: let's see if booting into boot loader menu is supported. */
3045
3046                 r = efi_loader_get_features(&features);
3047                 if (r < 0)
3048                         log_warning_errno(r, "Failed to determine whether reboot to boot loader menu is supported: %m");
3049                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT))
3050                         return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader does not support boot into boot loader menu.");
3051
3052                 use_efi = true;
3053
3054         } else if (r <= 0) {
3055                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU is set to off */
3056
3057                 if (r < 0)
3058                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
3059
3060                 return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader does not support boot into boot loader menu.");
3061         } else
3062                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU is set to on */
3063                 use_efi = false;
3064
3065         r = bus_verify_polkit_async(message,
3066                                     CAP_SYS_ADMIN,
3067                                     "org.freedesktop.login1.set-reboot-to-boot-loader-menu",
3068                                     NULL,
3069                                     false,
3070                                     UID_INVALID,
3071                                     &m->polkit_registry,
3072                                     error);
3073         if (r < 0)
3074                 return r;
3075         if (r == 0)
3076                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
3077
3078         if (use_efi) {
3079                 if (x == UINT64_MAX)
3080                         r = efi_set_variable(EFI_LOADER_VARIABLE(LoaderConfigTimeoutOneShot), NULL, 0);
3081                 else {
3082                         char buf[DECIMAL_STR_MAX(uint64_t) + 1];
3083                         xsprintf(buf, "%" PRIu64, DIV_ROUND_UP(x, USEC_PER_SEC)); /* second granularity */
3084
3085                         r = efi_set_variable_string(EFI_LOADER_VARIABLE(LoaderConfigTimeoutOneShot), buf);
3086                 }
3087                 if (r < 0)
3088                         return r;
3089         } else {
3090                 if (x == UINT64_MAX) {
3091                         if (unlink("/run/systemd/reboot-to-boot-loader-menu") < 0 && errno != ENOENT)
3092                                 return -errno;
3093                 } else {
3094                         char buf[DECIMAL_STR_MAX(uint64_t) + 1];
3095
3096                         xsprintf(buf, "%" PRIu64, x); /* μs granularity */
3097
3098                         r = write_string_file_atomic_label("/run/systemd/reboot-to-boot-loader-menu", buf);
3099                         if (r < 0)
3100                                 return r;
3101                 }
3102         }
3103
3104         return sd_bus_reply_method_return(message, NULL);
3105 }
3106
3107 static int method_can_reboot_to_boot_loader_menu(
3108                 sd_bus_message *message,
3109                 void *userdata,
3110                 sd_bus_error *error) {
3111
3112         _unused_ Manager *m = ASSERT_PTR(userdata);
3113         int r;
3114
3115         assert(message);
3116
3117         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU");
3118         if (r == -ENXIO) {
3119                 uint64_t features = 0;
3120
3121                 /* EFI case, let's see if booting into boot loader menu is supported. */
3122
3123                 r = efi_loader_get_features(&features);
3124                 if (r < 0)
3125                         log_warning_errno(r, "Failed to determine whether reboot to boot loader menu is supported: %m");
3126                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_CONFIG_TIMEOUT_ONE_SHOT))
3127                         return sd_bus_reply_method_return(message, "s", "na");
3128
3129         } else if (r <= 0) {
3130                 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU */
3131
3132                 if (r < 0)
3133                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_MENU: %m");
3134
3135                 return sd_bus_reply_method_return(message, "s", "na");
3136         }
3137
3138         return return_test_polkit(
3139                         message,
3140                         CAP_SYS_ADMIN,
3141                         "org.freedesktop.login1.set-reboot-to-boot-loader-menu",
3142                         NULL,
3143                         UID_INVALID,
3144                         error);
3145 }
3146
3147 static int property_get_reboot_to_boot_loader_entry(
3148                 sd_bus *bus,
3149                 const char *path,
3150                 const char *interface,
3151                 const char *property,
3152                 sd_bus_message *reply,
3153                 void *userdata,
3154                 sd_bus_error *error) {
3155
3156         _cleanup_free_ char *v = NULL;
3157         Manager *m = ASSERT_PTR(userdata);
3158         const char *x = NULL;
3159         int r;
3160
3161         assert(bus);
3162         assert(reply);
3163
3164         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
3165         if (r == -ENXIO) {
3166                 /* EFI case: let's read the LoaderEntryOneShot variable */
3167
3168                 r = efi_loader_update_entry_one_shot_cache(&m->efi_loader_entry_one_shot, &m->efi_loader_entry_one_shot_stat);
3169                 if (r < 0) {
3170                         if (r != -ENOENT)
3171                                 log_warning_errno(r, "Failed to read LoaderEntryOneShot variable, ignoring: %m");
3172                 } else
3173                         x = m->efi_loader_entry_one_shot;
3174
3175         } else if (r < 0)
3176                 log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
3177         else if (r > 0) {
3178
3179                 /* Non-EFI case, let's process /run/systemd/reboot-to-boot-loader-entry. */
3180
3181                 r = read_one_line_file("/run/systemd/reboot-to-boot-loader-entry", &v);
3182                 if (r < 0) {
3183                         if (r != -ENOENT)
3184                                 log_warning_errno(r, "Failed to read /run/systemd/reboot-to-boot-loader-entry, ignoring: %m");
3185                 } else if (!efi_loader_entry_name_valid(v))
3186                         log_warning("/run/systemd/reboot-to-boot-loader-entry is not valid, ignoring.");
3187                 else
3188                         x = v;
3189         }
3190
3191         return sd_bus_message_append(reply, "s", x);
3192 }
3193
3194 static int boot_loader_entry_exists(Manager *m, const char *id) {
3195         _cleanup_(boot_config_free) BootConfig config = BOOT_CONFIG_NULL;
3196         int r;
3197
3198         assert(m);
3199         assert(id);
3200
3201         r = boot_config_load_auto(&config, NULL, NULL);
3202         if (r < 0 && r != -ENOKEY) /* don't complain if no GPT is found, hence skip ENOKEY */
3203                 return r;
3204
3205         r = manager_read_efi_boot_loader_entries(m);
3206         if (r >= 0)
3207                 (void) boot_config_augment_from_loader(&config, m->efi_boot_loader_entries, /* auto_only= */ true);
3208
3209         return !!boot_config_find_entry(&config, id);
3210 }
3211
3212 static int method_set_reboot_to_boot_loader_entry(
3213                 sd_bus_message *message,
3214                 void *userdata,
3215                 sd_bus_error *error) {
3216
3217         Manager *m = ASSERT_PTR(userdata);
3218         bool use_efi;
3219         const char *v;
3220         int r;
3221
3222         assert(message);
3223
3224         r = sd_bus_message_read(message, "s", &v);
3225         if (r < 0)
3226                 return r;
3227
3228         if (isempty(v))
3229                 v = NULL;
3230         else if (efi_loader_entry_name_valid(v)) {
3231                 r = boot_loader_entry_exists(m, v);
3232                 if (r < 0)
3233                         return r;
3234                 if (r == 0)
3235                         return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Boot loader entry '%s' is not known.", v);
3236         } else
3237                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Boot loader entry name '%s' is not valid, refusing.", v);
3238
3239         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
3240         if (r == -ENXIO) {
3241                 uint64_t features;
3242
3243                 /* EFI case: let's see if booting into boot loader entry is supported. */
3244
3245                 r = efi_loader_get_features(&features);
3246                 if (r < 0)
3247                         log_warning_errno(r, "Failed to determine whether reboot into boot loader entry is supported: %m");
3248                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_ENTRY_ONESHOT))
3249                         return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Loader does not support boot into boot loader entry.");
3250
3251                 use_efi = true;
3252
3253         } else if (r <= 0) {
3254                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY is set to off */
3255
3256                 if (r < 0)
3257                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
3258
3259                 return sd_bus_error_set(error, SD_BUS_ERROR_NOT_SUPPORTED, "Loader does not support boot into boot loader entry.");
3260         } else
3261                 /* non-EFI case: $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY is set to on */
3262                 use_efi = false;
3263
3264         r = bus_verify_polkit_async(message,
3265                                     CAP_SYS_ADMIN,
3266                                     "org.freedesktop.login1.set-reboot-to-boot-loader-entry",
3267                                     NULL,
3268                                     false,
3269                                     UID_INVALID,
3270                                     &m->polkit_registry,
3271                                     error);
3272         if (r < 0)
3273                 return r;
3274         if (r == 0)
3275                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
3276
3277         if (use_efi) {
3278                 if (isempty(v))
3279                         /* Delete item */
3280                         r = efi_set_variable(EFI_LOADER_VARIABLE(LoaderEntryOneShot), NULL, 0);
3281                 else
3282                         r = efi_set_variable_string(EFI_LOADER_VARIABLE(LoaderEntryOneShot), v);
3283                 if (r < 0)
3284                         return r;
3285         } else {
3286                 if (isempty(v)) {
3287                         if (unlink("/run/systemd/reboot-to-boot-loader-entry") < 0 && errno != ENOENT)
3288                                 return -errno;
3289                 } else {
3290                         r = write_string_file_atomic_label("/run/systemd/reboot-boot-to-loader-entry", v);
3291                         if (r < 0)
3292                                 return r;
3293                 }
3294         }
3295
3296         return sd_bus_reply_method_return(message, NULL);
3297 }
3298
3299 static int method_can_reboot_to_boot_loader_entry(
3300                 sd_bus_message *message,
3301                 void *userdata,
3302                 sd_bus_error *error) {
3303
3304         _unused_ Manager *m = ASSERT_PTR(userdata);
3305         int r;
3306
3307         assert(message);
3308
3309         r = getenv_bool("SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY");
3310         if (r == -ENXIO) {
3311                 uint64_t features = 0;
3312
3313                 /* EFI case, let's see if booting into boot loader entry is supported. */
3314
3315                 r = efi_loader_get_features(&features);
3316                 if (r < 0)
3317                         log_warning_errno(r, "Failed to determine whether reboot to boot loader entry is supported: %m");
3318                 if (r < 0 || !FLAGS_SET(features, EFI_LOADER_FEATURE_ENTRY_ONESHOT))
3319                         return sd_bus_reply_method_return(message, "s", "na");
3320
3321         } else if (r <= 0) {
3322                 /* Non-EFI case: let's trust $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY */
3323
3324                 if (r < 0)
3325                         log_warning_errno(r, "Failed to parse $SYSTEMD_REBOOT_TO_BOOT_LOADER_ENTRY: %m");
3326
3327                 return sd_bus_reply_method_return(message, "s", "na");
3328         }
3329
3330         return return_test_polkit(
3331                         message,
3332                         CAP_SYS_ADMIN,
3333                         "org.freedesktop.login1.set-reboot-to-boot-loader-entry",
3334                         NULL,
3335                         UID_INVALID,
3336                         error);
3337 }
3338
3339 static int property_get_boot_loader_entries(
3340                 sd_bus *bus,
3341                 const char *path,
3342                 const char *interface,
3343                 const char *property,
3344                 sd_bus_message *reply,
3345                 void *userdata,
3346                 sd_bus_error *error) {
3347
3348         _cleanup_(boot_config_free) BootConfig config = BOOT_CONFIG_NULL;
3349         Manager *m = ASSERT_PTR(userdata);
3350         size_t i;
3351         int r;
3352
3353         assert(bus);
3354         assert(reply);
3355
3356         r = boot_config_load_auto(&config, NULL, NULL);
3357         if (r < 0 && r != -ENOKEY) /* don't complain if there's no GPT found */
3358                 return r;
3359
3360         r = manager_read_efi_boot_loader_entries(m);
3361         if (r >= 0)
3362                 (void) boot_config_augment_from_loader(&config, m->efi_boot_loader_entries, /* auto_only= */ true);
3363
3364         r = sd_bus_message_open_container(reply, 'a', "s");
3365         if (r < 0)
3366                 return r;
3367
3368         for (i = 0; i < config.n_entries; i++) {
3369                 BootEntry *e = config.entries + i;
3370
3371                 r = sd_bus_message_append(reply, "s", e->id);
3372                 if (r < 0)
3373                         return r;
3374         }
3375
3376         return sd_bus_message_close_container(reply);
3377 }
3378
3379 static int method_set_wall_message(
3380                 sd_bus_message *message,
3381                 void *userdata,
3382                 sd_bus_error *error) {
3383
3384         int r;
3385         Manager *m = ASSERT_PTR(userdata);
3386         char *wall_message;
3387         int enable_wall_messages;
3388
3389         assert(message);
3390
3391         r = sd_bus_message_read(message, "sb", &wall_message, &enable_wall_messages);
3392         if (r < 0)
3393                 return r;
3394
3395         if (strlen(wall_message) > WALL_MESSAGE_MAX)
3396                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3397                         "Wall message too long, maximum permitted length is %u characters.",
3398                         WALL_MESSAGE_MAX);
3399
3400         /* Short-circuit the operation if the desired state is already in place, to
3401          * avoid an unnecessary polkit permission check. */
3402         if (streq_ptr(m->wall_message, empty_to_null(wall_message)) &&
3403             m->enable_wall_messages == enable_wall_messages)
3404                 goto done;
3405
3406         r = bus_verify_polkit_async(message,
3407                                     CAP_SYS_ADMIN,
3408                                     "org.freedesktop.login1.set-wall-message",
3409                                     NULL,
3410                                     false,
3411                                     UID_INVALID,
3412                                     &m->polkit_registry,
3413                                     error);
3414         if (r < 0)
3415                 return r;
3416         if (r == 0)
3417                 return 1; /* Will call us back */
3418
3419         r = free_and_strdup(&m->wall_message, empty_to_null(wall_message));
3420         if (r < 0)
3421                 return log_oom();
3422
3423         m->enable_wall_messages = enable_wall_messages;
3424
3425  done:
3426         return sd_bus_reply_method_return(message, NULL);
3427 }
3428
3429 static int method_inhibit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3430         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
3431         _cleanup_(pidref_done) PidRef pidref = PIDREF_NULL;
3432         const char *who, *why, *what, *mode;
3433         _cleanup_free_ char *id = NULL;
3434         _cleanup_close_ int fifo_fd = -EBADF;
3435         Manager *m = ASSERT_PTR(userdata);
3436         InhibitMode mm;
3437         InhibitWhat w;
3438         pid_t pid;
3439         uid_t uid;
3440         int r;
3441
3442         assert(message);
3443
3444         r = sd_bus_message_read(message, "ssss", &what, &who, &why, &mode);
3445         if (r < 0)
3446                 return r;
3447
3448         w = inhibit_what_from_string(what);
3449         if (w <= 0)
3450                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3451                                          "Invalid what specification %s", what);
3452
3453         mm = inhibit_mode_from_string(mode);
3454         if (mm < 0)
3455                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3456                                          "Invalid mode specification %s", mode);
3457
3458         /* Delay is only supported for shutdown/sleep */
3459         if (mm == INHIBIT_DELAY && (w & ~(INHIBIT_SHUTDOWN|INHIBIT_SLEEP)))
3460                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS,
3461                                          "Delay inhibitors only supported for shutdown and sleep");
3462
3463         /* Don't allow taking delay locks while we are already
3464          * executing the operation. We shouldn't create the impression
3465          * that the lock was successful if the machine is about to go
3466          * down/suspend any moment. */
3467         if (m->delayed_action && m->delayed_action->inhibit_what & w)
3468                 return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS,
3469                                          "The operation inhibition has been requested for is already running");
3470
3471         r = bus_verify_polkit_async(
3472                         message,
3473                         CAP_SYS_BOOT,
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                         NULL,
3483                         false,
3484                         UID_INVALID,
3485                         &m->polkit_registry,
3486                         error);
3487         if (r < 0)
3488                 return r;
3489         if (r == 0)
3490                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
3491
3492         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID|SD_BUS_CREDS_PID, &creds);
3493         if (r < 0)
3494                 return r;
3495
3496         r = sd_bus_creds_get_euid(creds, &uid);
3497         if (r < 0)
3498                 return r;
3499
3500         r = sd_bus_creds_get_pid(creds, &pid);
3501         if (r < 0)
3502                 return r;
3503
3504         r = pidref_set_pid(&pidref, pid);
3505         if (r < 0)
3506                 return sd_bus_error_set_errnof(error, r, "Failed pin source process "PID_FMT": %m", pid);
3507
3508         if (hashmap_size(m->inhibitors) >= m->inhibitors_max)
3509                 return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED,
3510                                          "Maximum number of inhibitors (%" PRIu64 ") reached, refusing further inhibitors.",
3511                                          m->inhibitors_max);
3512
3513         do {
3514                 id = mfree(id);
3515
3516                 if (asprintf(&id, "%" PRIu64, ++m->inhibit_counter) < 0)
3517                         return -ENOMEM;
3518
3519         } while (hashmap_get(m->inhibitors, id));
3520
3521         _cleanup_(inhibitor_freep) Inhibitor *i = NULL;
3522         r = manager_add_inhibitor(m, id, &i);
3523         if (r < 0)
3524                 return r;
3525
3526         i->what = w;
3527         i->mode = mm;
3528         i->pid = TAKE_PIDREF(pidref);
3529         i->uid = uid;
3530         i->why = strdup(why);
3531         i->who = strdup(who);
3532
3533         if (!i->why || !i->who)
3534                 return -ENOMEM;
3535
3536         fifo_fd = inhibitor_create_fifo(i);
3537         if (fifo_fd < 0)
3538                 return fifo_fd;
3539
3540         r = inhibitor_start(i);
3541         if (r < 0)
3542                 return r;
3543         TAKE_PTR(i);
3544
3545         return sd_bus_reply_method_return(message, "h", fifo_fd);
3546 }
3547
3548 static const sd_bus_vtable manager_vtable[] = {
3549         SD_BUS_VTABLE_START(0),
3550
3551         SD_BUS_WRITABLE_PROPERTY("EnableWallMessages", "b", bus_property_get_bool, bus_property_set_bool, offsetof(Manager, enable_wall_messages), 0),
3552         SD_BUS_WRITABLE_PROPERTY("WallMessage", "s", NULL, NULL, offsetof(Manager, wall_message), 0),
3553
3554         SD_BUS_PROPERTY("NAutoVTs", "u", NULL, offsetof(Manager, n_autovts), SD_BUS_VTABLE_PROPERTY_CONST),
3555         SD_BUS_PROPERTY("KillOnlyUsers", "as", NULL, offsetof(Manager, kill_only_users), SD_BUS_VTABLE_PROPERTY_CONST),
3556         SD_BUS_PROPERTY("KillExcludeUsers", "as", NULL, offsetof(Manager, kill_exclude_users), SD_BUS_VTABLE_PROPERTY_CONST),
3557         SD_BUS_PROPERTY("KillUserProcesses", "b", bus_property_get_bool, offsetof(Manager, kill_user_processes), SD_BUS_VTABLE_PROPERTY_CONST),
3558         SD_BUS_PROPERTY("RebootParameter", "s", property_get_reboot_parameter, 0, 0),
3559         SD_BUS_PROPERTY("RebootToFirmwareSetup", "b", property_get_reboot_to_firmware_setup, 0, 0),
3560         SD_BUS_PROPERTY("RebootToBootLoaderMenu", "t", property_get_reboot_to_boot_loader_menu, 0, 0),
3561         SD_BUS_PROPERTY("RebootToBootLoaderEntry", "s", property_get_reboot_to_boot_loader_entry, 0, 0),
3562         SD_BUS_PROPERTY("BootLoaderEntries", "as", property_get_boot_loader_entries, 0, SD_BUS_VTABLE_PROPERTY_CONST),
3563         SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3564         SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3565         SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3566         SD_BUS_PROPERTY("BlockInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3567         SD_BUS_PROPERTY("DelayInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
3568         SD_BUS_PROPERTY("InhibitDelayMaxUSec", "t", NULL, offsetof(Manager, inhibit_delay_max), SD_BUS_VTABLE_PROPERTY_CONST),
3569         SD_BUS_PROPERTY("UserStopDelayUSec", "t", NULL, offsetof(Manager, user_stop_delay), SD_BUS_VTABLE_PROPERTY_CONST),
3570         SD_BUS_PROPERTY("SleepOperation", "as", property_get_sleep_operations, 0, SD_BUS_VTABLE_PROPERTY_CONST),
3571         SD_BUS_PROPERTY("HandlePowerKey", "s", property_get_handle_action, offsetof(Manager, handle_power_key), SD_BUS_VTABLE_PROPERTY_CONST),
3572         SD_BUS_PROPERTY("HandlePowerKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_power_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3573         SD_BUS_PROPERTY("HandleRebootKey", "s", property_get_handle_action, offsetof(Manager, handle_reboot_key), SD_BUS_VTABLE_PROPERTY_CONST),
3574         SD_BUS_PROPERTY("HandleRebootKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_reboot_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3575         SD_BUS_PROPERTY("HandleSuspendKey", "s", property_get_handle_action, offsetof(Manager, handle_suspend_key), SD_BUS_VTABLE_PROPERTY_CONST),
3576         SD_BUS_PROPERTY("HandleSuspendKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_suspend_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3577         SD_BUS_PROPERTY("HandleHibernateKey", "s", property_get_handle_action, offsetof(Manager, handle_hibernate_key), SD_BUS_VTABLE_PROPERTY_CONST),
3578         SD_BUS_PROPERTY("HandleHibernateKeyLongPress", "s", property_get_handle_action, offsetof(Manager, handle_hibernate_key_long_press), SD_BUS_VTABLE_PROPERTY_CONST),
3579         SD_BUS_PROPERTY("HandleLidSwitch", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch), SD_BUS_VTABLE_PROPERTY_CONST),
3580         SD_BUS_PROPERTY("HandleLidSwitchExternalPower", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch_ep), SD_BUS_VTABLE_PROPERTY_CONST),
3581         SD_BUS_PROPERTY("HandleLidSwitchDocked", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch_docked), SD_BUS_VTABLE_PROPERTY_CONST),
3582         SD_BUS_PROPERTY("HoldoffTimeoutUSec", "t", NULL, offsetof(Manager, holdoff_timeout_usec), SD_BUS_VTABLE_PROPERTY_CONST),
3583         SD_BUS_PROPERTY("IdleAction", "s", property_get_handle_action, offsetof(Manager, idle_action), SD_BUS_VTABLE_PROPERTY_CONST),
3584         SD_BUS_PROPERTY("IdleActionUSec", "t", NULL, offsetof(Manager, idle_action_usec), SD_BUS_VTABLE_PROPERTY_CONST),
3585         SD_BUS_PROPERTY("PreparingForShutdown", "b", property_get_preparing, 0, 0),
3586         SD_BUS_PROPERTY("PreparingForSleep", "b", property_get_preparing, 0, 0),
3587         SD_BUS_PROPERTY("ScheduledShutdown", "(st)", property_get_scheduled_shutdown, 0, 0),
3588         SD_BUS_PROPERTY("Docked", "b", property_get_docked, 0, 0),
3589         SD_BUS_PROPERTY("LidClosed", "b", property_get_lid_closed, 0, 0),
3590         SD_BUS_PROPERTY("OnExternalPower", "b", property_get_on_external_power, 0, 0),
3591         SD_BUS_PROPERTY("RemoveIPC", "b", bus_property_get_bool, offsetof(Manager, remove_ipc), SD_BUS_VTABLE_PROPERTY_CONST),
3592         SD_BUS_PROPERTY("RuntimeDirectorySize", "t", NULL, offsetof(Manager, runtime_dir_size), SD_BUS_VTABLE_PROPERTY_CONST),
3593         SD_BUS_PROPERTY("RuntimeDirectoryInodesMax", "t", NULL, offsetof(Manager, runtime_dir_inodes), SD_BUS_VTABLE_PROPERTY_CONST),
3594         SD_BUS_PROPERTY("InhibitorsMax", "t", NULL, offsetof(Manager, inhibitors_max), SD_BUS_VTABLE_PROPERTY_CONST),
3595         SD_BUS_PROPERTY("NCurrentInhibitors", "t", property_get_hashmap_size, offsetof(Manager, inhibitors), 0),
3596         SD_BUS_PROPERTY("SessionsMax", "t", NULL, offsetof(Manager, sessions_max), SD_BUS_VTABLE_PROPERTY_CONST),
3597         SD_BUS_PROPERTY("NCurrentSessions", "t", property_get_hashmap_size, offsetof(Manager, sessions), 0),
3598         SD_BUS_PROPERTY("UserTasksMax", "t", property_get_compat_user_tasks_max, 0, SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
3599         SD_BUS_PROPERTY("StopIdleSessionUSec", "t", NULL, offsetof(Manager, stop_idle_session_usec), SD_BUS_VTABLE_PROPERTY_CONST),
3600
3601         SD_BUS_METHOD_WITH_ARGS("GetSession",
3602                                 SD_BUS_ARGS("s", session_id),
3603                                 SD_BUS_RESULT("o", object_path),
3604                                 method_get_session,
3605                                 SD_BUS_VTABLE_UNPRIVILEGED),
3606         SD_BUS_METHOD_WITH_ARGS("GetSessionByPID",
3607                                 SD_BUS_ARGS("u", pid),
3608                                 SD_BUS_RESULT("o", object_path),
3609                                 method_get_session_by_pid,
3610                                 SD_BUS_VTABLE_UNPRIVILEGED),
3611         SD_BUS_METHOD_WITH_ARGS("GetUser",
3612                                 SD_BUS_ARGS("u", uid),
3613                                 SD_BUS_RESULT("o", object_path),
3614                                 method_get_user,
3615                                 SD_BUS_VTABLE_UNPRIVILEGED),
3616         SD_BUS_METHOD_WITH_ARGS("GetUserByPID",
3617                                 SD_BUS_ARGS("u", pid),
3618                                 SD_BUS_RESULT("o", object_path),
3619                                 method_get_user_by_pid,
3620                                 SD_BUS_VTABLE_UNPRIVILEGED),
3621         SD_BUS_METHOD_WITH_ARGS("GetSeat",
3622                                 SD_BUS_ARGS("s", seat_id),
3623                                 SD_BUS_RESULT("o", object_path),
3624                                 method_get_seat,
3625                                 SD_BUS_VTABLE_UNPRIVILEGED),
3626         SD_BUS_METHOD_WITH_ARGS("ListSessions",
3627                                 SD_BUS_NO_ARGS,
3628                                 SD_BUS_RESULT("a(susso)", sessions),
3629                                 method_list_sessions,
3630                                 SD_BUS_VTABLE_UNPRIVILEGED),
3631         SD_BUS_METHOD_WITH_ARGS("ListUsers",
3632                                 SD_BUS_NO_ARGS,
3633                                 SD_BUS_RESULT("a(uso)", users),
3634                                 method_list_users,
3635                                 SD_BUS_VTABLE_UNPRIVILEGED),
3636         SD_BUS_METHOD_WITH_ARGS("ListSeats",
3637                                 SD_BUS_NO_ARGS,
3638                                 SD_BUS_RESULT("a(so)", seats),
3639                                 method_list_seats,
3640                                 SD_BUS_VTABLE_UNPRIVILEGED),
3641         SD_BUS_METHOD_WITH_ARGS("ListInhibitors",
3642                                 SD_BUS_NO_ARGS,
3643                                 SD_BUS_RESULT("a(ssssuu)", inhibitors),
3644                                 method_list_inhibitors,
3645                                 SD_BUS_VTABLE_UNPRIVILEGED),
3646         SD_BUS_METHOD_WITH_ARGS("CreateSession",
3647                                 SD_BUS_ARGS("u", uid,
3648                                             "u", pid,
3649                                             "s", service,
3650                                             "s", type,
3651                                             "s", class,
3652                                             "s", desktop,
3653                                             "s", seat_id,
3654                                             "u", vtnr,
3655                                             "s", tty,
3656                                             "s", display,
3657                                             "b", remote,
3658                                             "s", remote_user,
3659                                             "s", remote_host,
3660                                             "a(sv)", properties),
3661                                 SD_BUS_RESULT("s", session_id,
3662                                               "o", object_path,
3663                                               "s", runtime_path,
3664                                               "h", fifo_fd,
3665                                               "u", uid,
3666                                               "s", seat_id,
3667                                               "u", vtnr,
3668                                               "b", existing),
3669                                 method_create_session,
3670                                 0),
3671         SD_BUS_METHOD_WITH_ARGS("CreateSessionWithPIDFD",
3672                                 SD_BUS_ARGS("u", uid,
3673                                             "h", pidfd,
3674                                             "s", service,
3675                                             "s", type,
3676                                             "s", class,
3677                                             "s", desktop,
3678                                             "s", seat_id,
3679                                             "u", vtnr,
3680                                             "s", tty,
3681                                             "s", display,
3682                                             "b", remote,
3683                                             "s", remote_user,
3684                                             "s", remote_host,
3685                                             "t", flags,
3686                                             "a(sv)", properties),
3687                                 SD_BUS_RESULT("s", session_id,
3688                                               "o", object_path,
3689                                               "s", runtime_path,
3690                                               "h", fifo_fd,
3691                                               "u", uid,
3692                                               "s", seat_id,
3693                                               "u", vtnr,
3694                                               "b", existing),
3695                                 method_create_session_pidfd,
3696                                 0),
3697         SD_BUS_METHOD_WITH_ARGS("ReleaseSession",
3698                                 SD_BUS_ARGS("s", session_id),
3699                                 SD_BUS_NO_RESULT,
3700                                 method_release_session,
3701                                 0),
3702         SD_BUS_METHOD_WITH_ARGS("ActivateSession",
3703                                 SD_BUS_ARGS("s", session_id),
3704                                 SD_BUS_NO_RESULT,
3705                                 method_activate_session,
3706                                 SD_BUS_VTABLE_UNPRIVILEGED),
3707         SD_BUS_METHOD_WITH_ARGS("ActivateSessionOnSeat",
3708                                 SD_BUS_ARGS("s", session_id, "s", seat_id),
3709                                 SD_BUS_NO_RESULT,
3710                                 method_activate_session_on_seat,
3711                                 SD_BUS_VTABLE_UNPRIVILEGED),
3712         SD_BUS_METHOD_WITH_ARGS("LockSession",
3713                                 SD_BUS_ARGS("s", session_id),
3714                                 SD_BUS_NO_RESULT,
3715                                 method_lock_session,
3716                                 SD_BUS_VTABLE_UNPRIVILEGED),
3717         SD_BUS_METHOD_WITH_ARGS("UnlockSession",
3718                                 SD_BUS_ARGS("s", session_id),
3719                                 SD_BUS_NO_RESULT,
3720                                 method_lock_session,
3721                                 SD_BUS_VTABLE_UNPRIVILEGED),
3722         SD_BUS_METHOD("LockSessions",
3723                       NULL,
3724                       NULL,
3725                       method_lock_sessions,
3726                       SD_BUS_VTABLE_UNPRIVILEGED),
3727         SD_BUS_METHOD("UnlockSessions",
3728                       NULL,
3729                       NULL,
3730                       method_lock_sessions,
3731                       SD_BUS_VTABLE_UNPRIVILEGED),
3732         SD_BUS_METHOD_WITH_ARGS("KillSession",
3733                                 SD_BUS_ARGS("s", session_id, "s", who, "i", signal_number),
3734                                 SD_BUS_NO_RESULT,
3735                                 method_kill_session,
3736                                 SD_BUS_VTABLE_UNPRIVILEGED),
3737         SD_BUS_METHOD_WITH_ARGS("KillUser",
3738                                 SD_BUS_ARGS("u", uid, "i", signal_number),
3739                                 SD_BUS_NO_RESULT,
3740                                 method_kill_user,
3741                                 SD_BUS_VTABLE_UNPRIVILEGED),
3742         SD_BUS_METHOD_WITH_ARGS("TerminateSession",
3743                                 SD_BUS_ARGS("s", session_id),
3744                                 SD_BUS_NO_RESULT,
3745                                 method_terminate_session,
3746                                 SD_BUS_VTABLE_UNPRIVILEGED),
3747         SD_BUS_METHOD_WITH_ARGS("TerminateUser",
3748                                 SD_BUS_ARGS("u", uid),
3749                                 SD_BUS_NO_RESULT,
3750                                 method_terminate_user,
3751                                 SD_BUS_VTABLE_UNPRIVILEGED),
3752         SD_BUS_METHOD_WITH_ARGS("TerminateSeat",
3753                                 SD_BUS_ARGS("s", seat_id),
3754                                 SD_BUS_NO_RESULT,
3755                                 method_terminate_seat,
3756                                 SD_BUS_VTABLE_UNPRIVILEGED),
3757         SD_BUS_METHOD_WITH_ARGS("SetUserLinger",
3758                                 SD_BUS_ARGS("u", uid, "b", enable, "b", interactive),
3759                                 SD_BUS_NO_RESULT,
3760                                 method_set_user_linger,
3761                                 SD_BUS_VTABLE_UNPRIVILEGED),
3762         SD_BUS_METHOD_WITH_ARGS("AttachDevice",
3763                                 SD_BUS_ARGS("s", seat_id, "s", sysfs_path, "b", interactive),
3764                                 SD_BUS_NO_RESULT,
3765                                 method_attach_device,
3766                                 SD_BUS_VTABLE_UNPRIVILEGED),
3767         SD_BUS_METHOD_WITH_ARGS("FlushDevices",
3768                                 SD_BUS_ARGS("b", interactive),
3769                                 SD_BUS_NO_RESULT,
3770                                 method_flush_devices,
3771                                 SD_BUS_VTABLE_UNPRIVILEGED),
3772         SD_BUS_METHOD_WITH_ARGS("PowerOff",
3773                                 SD_BUS_ARGS("b", interactive),
3774                                 SD_BUS_NO_RESULT,
3775                                 method_poweroff,
3776                                 SD_BUS_VTABLE_UNPRIVILEGED),
3777         SD_BUS_METHOD_WITH_ARGS("PowerOffWithFlags",
3778                                 SD_BUS_ARGS("t", flags),
3779                                 SD_BUS_NO_RESULT,
3780                                 method_poweroff,
3781                                 SD_BUS_VTABLE_UNPRIVILEGED),
3782         SD_BUS_METHOD_WITH_ARGS("Reboot",
3783                                 SD_BUS_ARGS("b", interactive),
3784                                 SD_BUS_NO_RESULT,
3785                                 method_reboot,
3786                                 SD_BUS_VTABLE_UNPRIVILEGED),
3787         SD_BUS_METHOD_WITH_ARGS("RebootWithFlags",
3788                                 SD_BUS_ARGS("t", flags),
3789                                 SD_BUS_NO_RESULT,
3790                                 method_reboot,
3791                                 SD_BUS_VTABLE_UNPRIVILEGED),
3792         SD_BUS_METHOD_WITH_ARGS("Halt",
3793                                 SD_BUS_ARGS("b", interactive),
3794                                 SD_BUS_NO_RESULT,
3795                                 method_halt,
3796                                 SD_BUS_VTABLE_UNPRIVILEGED),
3797         SD_BUS_METHOD_WITH_ARGS("HaltWithFlags",
3798                                 SD_BUS_ARGS("t", flags),
3799                                 SD_BUS_NO_RESULT,
3800                                 method_halt,
3801                                 SD_BUS_VTABLE_UNPRIVILEGED),
3802         SD_BUS_METHOD_WITH_ARGS("Suspend",
3803                                 SD_BUS_ARGS("b", interactive),
3804                                 SD_BUS_NO_RESULT,
3805                                 method_suspend,
3806                                 SD_BUS_VTABLE_UNPRIVILEGED),
3807         SD_BUS_METHOD_WITH_ARGS("SuspendWithFlags",
3808                                 SD_BUS_ARGS("t", flags),
3809                                 SD_BUS_NO_RESULT,
3810                                 method_suspend,
3811                                 SD_BUS_VTABLE_UNPRIVILEGED),
3812         SD_BUS_METHOD_WITH_ARGS("Hibernate",
3813                                 SD_BUS_ARGS("b", interactive),
3814                                 SD_BUS_NO_RESULT,
3815                                 method_hibernate,
3816                                 SD_BUS_VTABLE_UNPRIVILEGED),
3817         SD_BUS_METHOD_WITH_ARGS("HibernateWithFlags",
3818                                 SD_BUS_ARGS("t", flags),
3819                                 SD_BUS_NO_RESULT,
3820                                 method_hibernate,
3821                                 SD_BUS_VTABLE_UNPRIVILEGED),
3822         SD_BUS_METHOD_WITH_ARGS("HybridSleep",
3823                                 SD_BUS_ARGS("b", interactive),
3824                                 SD_BUS_NO_RESULT,
3825                                 method_hybrid_sleep,
3826                                 SD_BUS_VTABLE_UNPRIVILEGED),
3827         SD_BUS_METHOD_WITH_ARGS("HybridSleepWithFlags",
3828                                 SD_BUS_ARGS("t", flags),
3829                                 SD_BUS_NO_RESULT,
3830                                 method_hybrid_sleep,
3831                                 SD_BUS_VTABLE_UNPRIVILEGED),
3832         SD_BUS_METHOD_WITH_ARGS("SuspendThenHibernate",
3833                                 SD_BUS_ARGS("b", interactive),
3834                                 SD_BUS_NO_RESULT,
3835                                 method_suspend_then_hibernate,
3836                                 SD_BUS_VTABLE_UNPRIVILEGED),
3837         SD_BUS_METHOD_WITH_ARGS("SuspendThenHibernateWithFlags",
3838                                 SD_BUS_ARGS("t", flags),
3839                                 SD_BUS_NO_RESULT,
3840                                 method_suspend_then_hibernate,
3841                                 SD_BUS_VTABLE_UNPRIVILEGED),
3842         SD_BUS_METHOD_WITH_ARGS("Sleep",
3843                                 SD_BUS_ARGS("t", flags),
3844                                 SD_BUS_NO_RESULT,
3845                                 method_sleep,
3846                                 SD_BUS_VTABLE_UNPRIVILEGED),
3847         SD_BUS_METHOD_WITH_ARGS("CanPowerOff",
3848                                 SD_BUS_NO_ARGS,
3849                                 SD_BUS_RESULT("s", result),
3850                                 method_can_poweroff,
3851                                 SD_BUS_VTABLE_UNPRIVILEGED),
3852         SD_BUS_METHOD_WITH_ARGS("CanReboot",
3853                                 SD_BUS_NO_ARGS,
3854                                 SD_BUS_RESULT("s", result),
3855                                 method_can_reboot,
3856                                 SD_BUS_VTABLE_UNPRIVILEGED),
3857         SD_BUS_METHOD_WITH_ARGS("CanHalt",
3858                                 SD_BUS_NO_ARGS,
3859                                 SD_BUS_RESULT("s", result),
3860                                 method_can_halt,
3861                                 SD_BUS_VTABLE_UNPRIVILEGED),
3862         SD_BUS_METHOD_WITH_ARGS("CanSuspend",
3863                                 SD_BUS_NO_ARGS,
3864                                 SD_BUS_RESULT("s", result),
3865                                 method_can_suspend,
3866                                 SD_BUS_VTABLE_UNPRIVILEGED),
3867         SD_BUS_METHOD_WITH_ARGS("CanHibernate",
3868                                 SD_BUS_NO_ARGS,
3869                                 SD_BUS_RESULT("s", result),
3870                                 method_can_hibernate,
3871                                 SD_BUS_VTABLE_UNPRIVILEGED),
3872         SD_BUS_METHOD_WITH_ARGS("CanHybridSleep",
3873                                 SD_BUS_NO_ARGS,
3874                                 SD_BUS_RESULT("s", result),
3875                                 method_can_hybrid_sleep,
3876                                 SD_BUS_VTABLE_UNPRIVILEGED),
3877         SD_BUS_METHOD_WITH_ARGS("CanSuspendThenHibernate",
3878                                 SD_BUS_NO_ARGS,
3879                                 SD_BUS_RESULT("s", result),
3880                                 method_can_suspend_then_hibernate,
3881                                 SD_BUS_VTABLE_UNPRIVILEGED),
3882         SD_BUS_METHOD_WITH_ARGS("CanSleep",
3883                                 SD_BUS_NO_ARGS,
3884                                 SD_BUS_RESULT("s", result),
3885                                 method_can_sleep,
3886                                 SD_BUS_VTABLE_UNPRIVILEGED),
3887         SD_BUS_METHOD_WITH_ARGS("ScheduleShutdown",
3888                                 SD_BUS_ARGS("s", type, "t", usec),
3889                                 SD_BUS_NO_RESULT,
3890                                 method_schedule_shutdown,
3891                                 SD_BUS_VTABLE_UNPRIVILEGED),
3892         SD_BUS_METHOD_WITH_ARGS("CancelScheduledShutdown",
3893                                 SD_BUS_NO_ARGS,
3894                                 SD_BUS_RESULT("b", cancelled),
3895                                 method_cancel_scheduled_shutdown,
3896                                 SD_BUS_VTABLE_UNPRIVILEGED),
3897         SD_BUS_METHOD_WITH_ARGS("Inhibit",
3898                                 SD_BUS_ARGS("s", what, "s", who, "s", why, "s", mode),
3899                                 SD_BUS_RESULT("h", pipe_fd),
3900                                 method_inhibit,
3901                                 SD_BUS_VTABLE_UNPRIVILEGED),
3902         SD_BUS_METHOD_WITH_ARGS("CanRebootParameter",
3903                                 SD_BUS_NO_ARGS,
3904                                 SD_BUS_RESULT("s", result),
3905                                 method_can_reboot_parameter,
3906                                 SD_BUS_VTABLE_UNPRIVILEGED),
3907         SD_BUS_METHOD_WITH_ARGS("SetRebootParameter",
3908                                 SD_BUS_ARGS("s", parameter),
3909                                 SD_BUS_NO_RESULT,
3910                                 method_set_reboot_parameter,
3911                                 SD_BUS_VTABLE_UNPRIVILEGED),
3912         SD_BUS_METHOD_WITH_ARGS("CanRebootToFirmwareSetup",
3913                                 SD_BUS_NO_ARGS,
3914                                 SD_BUS_RESULT("s", result),
3915                                 method_can_reboot_to_firmware_setup,
3916                                 SD_BUS_VTABLE_UNPRIVILEGED),
3917         SD_BUS_METHOD_WITH_ARGS("SetRebootToFirmwareSetup",
3918                                 SD_BUS_ARGS("b", enable),
3919                                 SD_BUS_NO_RESULT,
3920                                 method_set_reboot_to_firmware_setup,
3921                                 SD_BUS_VTABLE_UNPRIVILEGED),
3922         SD_BUS_METHOD_WITH_ARGS("CanRebootToBootLoaderMenu",
3923                                 SD_BUS_NO_ARGS,
3924                                 SD_BUS_RESULT("s", result),
3925                                 method_can_reboot_to_boot_loader_menu,
3926                                 SD_BUS_VTABLE_UNPRIVILEGED),
3927         SD_BUS_METHOD_WITH_ARGS("SetRebootToBootLoaderMenu",
3928                                 SD_BUS_ARGS("t", timeout),
3929                                 SD_BUS_NO_RESULT,
3930                                 method_set_reboot_to_boot_loader_menu,
3931                                 SD_BUS_VTABLE_UNPRIVILEGED),
3932         SD_BUS_METHOD_WITH_ARGS("CanRebootToBootLoaderEntry",
3933                                 SD_BUS_NO_ARGS,
3934                                 SD_BUS_RESULT("s", result),
3935                                 method_can_reboot_to_boot_loader_entry,
3936                                 SD_BUS_VTABLE_UNPRIVILEGED),
3937         SD_BUS_METHOD_WITH_ARGS("SetRebootToBootLoaderEntry",
3938                                 SD_BUS_ARGS("s", boot_loader_entry),
3939                                 SD_BUS_NO_RESULT,
3940                                 method_set_reboot_to_boot_loader_entry,
3941                                 SD_BUS_VTABLE_UNPRIVILEGED),
3942         SD_BUS_METHOD_WITH_ARGS("SetWallMessage",
3943                                 SD_BUS_ARGS("s", wall_message, "b", enable),
3944                                 SD_BUS_NO_RESULT,
3945                                 method_set_wall_message,
3946                                 SD_BUS_VTABLE_UNPRIVILEGED),
3947
3948         SD_BUS_SIGNAL_WITH_ARGS("SessionNew",
3949                                 SD_BUS_ARGS("s", session_id, "o", object_path),
3950                                 0),
3951         SD_BUS_SIGNAL_WITH_ARGS("SessionRemoved",
3952                                 SD_BUS_ARGS("s", session_id, "o", object_path),
3953                                 0),
3954         SD_BUS_SIGNAL_WITH_ARGS("UserNew",
3955                                 SD_BUS_ARGS("u", uid, "o", object_path),
3956                                 0),
3957         SD_BUS_SIGNAL_WITH_ARGS("UserRemoved",
3958                                 SD_BUS_ARGS("u", uid, "o", object_path),
3959                                 0),
3960         SD_BUS_SIGNAL_WITH_ARGS("SeatNew",
3961                                 SD_BUS_ARGS("s", seat_id, "o", object_path),
3962                                 0),
3963         SD_BUS_SIGNAL_WITH_ARGS("SeatRemoved",
3964                                 SD_BUS_ARGS("s", seat_id, "o", object_path),
3965                                 0),
3966         SD_BUS_SIGNAL_WITH_ARGS("PrepareForShutdown",
3967                                 SD_BUS_ARGS("b", start),
3968                                 0),
3969         SD_BUS_SIGNAL_WITH_ARGS("PrepareForShutdownWithMetadata",
3970                                 SD_BUS_ARGS("b", start, "a{sv}", metadata),
3971                                 0),
3972         SD_BUS_SIGNAL_WITH_ARGS("PrepareForSleep",
3973                                 SD_BUS_ARGS("b", start),
3974                                 0),
3975
3976         SD_BUS_VTABLE_END
3977 };
3978
3979 const BusObjectImplementation manager_object = {
3980         "/org/freedesktop/login1",
3981         "org.freedesktop.login1.Manager",
3982         .vtables = BUS_VTABLES(manager_vtable),
3983         .children = BUS_IMPLEMENTATIONS(&seat_object,
3984                                         &session_object,
3985                                         &user_object),
3986 };
3987
3988 static int session_jobs_reply(Session *s, uint32_t jid, const char *unit, const char *result) {
3989         assert(s);
3990         assert(unit);
3991
3992         if (!s->started)
3993                 return 0;
3994
3995         if (result && !streq(result, "done")) {
3996                 _cleanup_(sd_bus_error_free) sd_bus_error e = SD_BUS_ERROR_NULL;
3997
3998                 sd_bus_error_setf(&e, BUS_ERROR_JOB_FAILED,
3999                                   "Job %u for unit '%s' failed with '%s'", jid, unit, result);
4000                 return session_send_create_reply(s, &e);
4001         }
4002
4003         return session_send_create_reply(s, NULL);
4004 }
4005
4006 int match_job_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
4007         const char *path, *result, *unit;
4008         Manager *m = ASSERT_PTR(userdata);
4009         Session *session;
4010         uint32_t id;
4011         User *user;
4012         int r;
4013
4014         assert(message);
4015
4016         r = sd_bus_message_read(message, "uoss", &id, &path, &unit, &result);
4017         if (r < 0) {
4018                 bus_log_parse_error(r);
4019                 return 0;
4020         }
4021
4022         if (m->action_job && streq(m->action_job, path)) {
4023                 assert(m->delayed_action);
4024                 log_info("Operation '%s' finished.", inhibit_what_to_string(m->delayed_action->inhibit_what));
4025
4026                 /* Tell people that they now may take a lock again */
4027                 (void) send_prepare_for(m, m->delayed_action, false);
4028
4029                 m->action_job = mfree(m->action_job);
4030                 m->delayed_action = NULL;
4031                 return 0;
4032         }
4033
4034         session = hashmap_get(m->session_units, unit);
4035         if (session) {
4036                 if (streq_ptr(path, session->scope_job)) {
4037                         session->scope_job = mfree(session->scope_job);
4038                         (void) session_jobs_reply(session, id, unit, result);
4039
4040                         session_save(session);
4041                         user_save(session->user);
4042                 }
4043
4044                 session_add_to_gc_queue(session);
4045         }
4046
4047         user = hashmap_get(m->user_units, unit);
4048         if (user) {
4049                 if (streq_ptr(path, user->service_job)) {
4050                         user->service_job = mfree(user->service_job);
4051
4052                         LIST_FOREACH(sessions_by_user, s, user->sessions)
4053                                 (void) session_jobs_reply(s, id, unit, NULL /* don't propagate user service failures to the client */);
4054
4055                         user_save(user);
4056                 }
4057
4058                 user_add_to_gc_queue(user);
4059         }
4060
4061         return 0;
4062 }
4063
4064 int match_unit_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
4065         const char *path, *unit;
4066         Manager *m = ASSERT_PTR(userdata);
4067         Session *session;
4068         User *user;
4069         int r;
4070
4071         assert(message);
4072
4073         r = sd_bus_message_read(message, "so", &unit, &path);
4074         if (r < 0) {
4075                 bus_log_parse_error(r);
4076                 return 0;
4077         }
4078
4079         session = hashmap_get(m->session_units, unit);
4080         if (session)
4081                 session_add_to_gc_queue(session);
4082
4083         user = hashmap_get(m->user_units, unit);
4084         if (user)
4085                 user_add_to_gc_queue(user);
4086
4087         return 0;
4088 }
4089
4090 int match_properties_changed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
4091         _cleanup_free_ char *unit = NULL;
4092         Manager *m = ASSERT_PTR(userdata);
4093         const char *path;
4094         Session *session;
4095         User *user;
4096         int r;
4097
4098         assert(message);
4099
4100         path = sd_bus_message_get_path(message);
4101         if (!path)
4102                 return 0;
4103
4104         r = unit_name_from_dbus_path(path, &unit);
4105         if (r == -EINVAL) /* not a unit */
4106                 return 0;
4107         if (r < 0) {
4108                 log_oom();
4109                 return 0;
4110         }
4111
4112         session = hashmap_get(m->session_units, unit);
4113         if (session)
4114                 session_add_to_gc_queue(session);
4115
4116         user = hashmap_get(m->user_units, unit);
4117         if (user)
4118                 user_add_to_gc_queue(user);
4119
4120         return 0;
4121 }
4122
4123 int match_reloading(sd_bus_message *message, void *userdata, sd_bus_error *error) {
4124         Manager *m = ASSERT_PTR(userdata);
4125         Session *session;
4126         int b, r;
4127
4128         assert(message);
4129
4130         r = sd_bus_message_read(message, "b", &b);
4131         if (r < 0) {
4132                 bus_log_parse_error(r);
4133                 return 0;
4134         }
4135
4136         if (b)
4137                 return 0;
4138
4139         /* systemd finished reloading, let's recheck all our sessions */
4140         log_debug("System manager has been reloaded, rechecking sessions...");
4141
4142         HASHMAP_FOREACH(session, m->sessions)
4143                 session_add_to_gc_queue(session);
4144
4145         return 0;
4146 }
4147
4148 int manager_send_changed(Manager *manager, const char *property, ...) {
4149         char **l;
4150
4151         assert(manager);
4152
4153         l = strv_from_stdarg_alloca(property);
4154
4155         return sd_bus_emit_properties_changed_strv(
4156                         manager->bus,
4157                         "/org/freedesktop/login1",
4158                         "org.freedesktop.login1.Manager",
4159                         l);
4160 }
4161
4162 static int strdup_job(sd_bus_message *reply, char **job) {
4163         const char *j;
4164         char *copy;
4165         int r;
4166
4167         r = sd_bus_message_read(reply, "o", &j);
4168         if (r < 0)
4169                 return r;
4170
4171         copy = strdup(j);
4172         if (!copy)
4173                 return -ENOMEM;
4174
4175         *job = copy;
4176         return 1;
4177 }
4178
4179 int manager_start_scope(
4180                 Manager *manager,
4181                 const char *scope,
4182                 const PidRef *pidref,
4183                 const char *slice,
4184                 const char *description,
4185                 char **wants,
4186                 char **after,
4187                 const char *requires_mounts_for,
4188                 sd_bus_message *more_properties,
4189                 sd_bus_error *error,
4190                 char **job) {
4191
4192         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
4193         int r;
4194
4195         assert(manager);
4196         assert(scope);
4197         assert(pidref_is_set(pidref));
4198         assert(job);
4199
4200         r = bus_message_new_method_call(manager->bus, &m, bus_systemd_mgr, "StartTransientUnit");
4201         if (r < 0)
4202                 return r;
4203
4204         r = sd_bus_message_append(m, "ss", strempty(scope), "fail");
4205         if (r < 0)
4206                 return r;
4207
4208         r = sd_bus_message_open_container(m, 'a', "(sv)");
4209         if (r < 0)
4210                 return r;
4211
4212         if (!isempty(slice)) {
4213                 r = sd_bus_message_append(m, "(sv)", "Slice", "s", slice);
4214                 if (r < 0)
4215                         return r;
4216         }
4217
4218         if (!isempty(description)) {
4219                 r = sd_bus_message_append(m, "(sv)", "Description", "s", description);
4220                 if (r < 0)
4221                         return r;
4222         }
4223
4224         STRV_FOREACH(i, wants) {
4225                 r = sd_bus_message_append(m, "(sv)", "Wants", "as", 1, *i);
4226                 if (r < 0)
4227                         return r;
4228         }
4229
4230         STRV_FOREACH(i, after) {
4231                 r = sd_bus_message_append(m, "(sv)", "After", "as", 1, *i);
4232                 if (r < 0)
4233                         return r;
4234         }
4235
4236         if (!empty_or_root(requires_mounts_for)) {
4237                 r = sd_bus_message_append(m, "(sv)", "RequiresMountsFor", "as", 1, requires_mounts_for);
4238                 if (r < 0)
4239                         return r;
4240         }
4241
4242         /* Make sure that the session shells are terminated with SIGHUP since bash and friends tend to ignore
4243          * SIGTERM */
4244         r = sd_bus_message_append(m, "(sv)", "SendSIGHUP", "b", true);
4245         if (r < 0)
4246                 return r;
4247
4248         r = bus_append_scope_pidref(m, pidref);
4249         if (r < 0)
4250                 return r;
4251
4252         /* For login session scopes, if a process is OOM killed by the kernel, *don't* terminate the rest of
4253            the scope */
4254         r = sd_bus_message_append(m, "(sv)", "OOMPolicy", "s", "continue");
4255         if (r < 0)
4256                 return r;
4257
4258         /* disable TasksMax= for the session scope, rely on the slice setting for it */
4259         r = sd_bus_message_append(m, "(sv)", "TasksMax", "t", UINT64_MAX);
4260         if (r < 0)
4261                 return bus_log_create_error(r);
4262
4263         if (more_properties) {
4264                 /* If TasksMax also appears here, it will overwrite the default value set above */
4265                 r = sd_bus_message_copy(m, more_properties, true);
4266                 if (r < 0)
4267                         return r;
4268         }
4269
4270         r = sd_bus_message_close_container(m);
4271         if (r < 0)
4272                 return r;
4273
4274         r = sd_bus_message_append(m, "a(sa(sv))", 0);
4275         if (r < 0)
4276                 return r;
4277
4278         r = sd_bus_call(manager->bus, m, 0, error, &reply);
4279         if (r < 0)
4280                 return r;
4281
4282         return strdup_job(reply, job);
4283 }
4284
4285 int manager_start_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) {
4286         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4287         int r;
4288
4289         assert(manager);
4290         assert(unit);
4291         assert(job);
4292
4293         r = bus_call_method(
4294                         manager->bus,
4295                         bus_systemd_mgr,
4296                         "StartUnit",
4297                         error,
4298                         &reply,
4299                         "ss", unit, "replace");
4300         if (r < 0)
4301                 return r;
4302
4303         return strdup_job(reply, job);
4304 }
4305
4306 int manager_stop_unit(Manager *manager, const char *unit, const char *job_mode, sd_bus_error *error, char **ret_job) {
4307         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4308         int r;
4309
4310         assert(manager);
4311         assert(unit);
4312         assert(ret_job);
4313
4314         r = bus_call_method(
4315                         manager->bus,
4316                         bus_systemd_mgr,
4317                         "StopUnit",
4318                         error,
4319                         &reply,
4320                         "ss", unit, job_mode ?: "fail");
4321         if (r < 0) {
4322                 if (sd_bus_error_has_names(error, BUS_ERROR_NO_SUCH_UNIT,
4323                                                   BUS_ERROR_LOAD_FAILED)) {
4324
4325                         *ret_job = NULL;
4326                         sd_bus_error_free(error);
4327                         return 0;
4328                 }
4329
4330                 return r;
4331         }
4332
4333         return strdup_job(reply, ret_job);
4334 }
4335
4336 int manager_abandon_scope(Manager *manager, const char *scope, sd_bus_error *ret_error) {
4337         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4338         _cleanup_free_ char *path = NULL;
4339         int r;
4340
4341         assert(manager);
4342         assert(scope);
4343
4344         path = unit_dbus_path_from_name(scope);
4345         if (!path)
4346                 return -ENOMEM;
4347
4348         r = sd_bus_call_method(
4349                         manager->bus,
4350                         "org.freedesktop.systemd1",
4351                         path,
4352                         "org.freedesktop.systemd1.Scope",
4353                         "Abandon",
4354                         &error,
4355                         NULL,
4356                         NULL);
4357         if (r < 0) {
4358                 if (sd_bus_error_has_names(&error, BUS_ERROR_NO_SUCH_UNIT,
4359                                                    BUS_ERROR_LOAD_FAILED,
4360                                                    BUS_ERROR_SCOPE_NOT_RUNNING))
4361                         return 0;
4362
4363                 sd_bus_error_move(ret_error, &error);
4364                 return r;
4365         }
4366
4367         return 1;
4368 }
4369
4370 int manager_kill_unit(Manager *manager, const char *unit, KillWho who, int signo, sd_bus_error *error) {
4371         assert(manager);
4372         assert(unit);
4373
4374         return bus_call_method(
4375                         manager->bus,
4376                         bus_systemd_mgr,
4377                         "KillUnit",
4378                         error,
4379                         NULL,
4380                         "ssi", unit, who == KILL_LEADER ? "main" : "all", signo);
4381 }
4382
4383 int manager_unit_is_active(Manager *manager, const char *unit, sd_bus_error *ret_error) {
4384         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4385         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4386         _cleanup_free_ char *path = NULL;
4387         const char *state;
4388         int r;
4389
4390         assert(manager);
4391         assert(unit);
4392
4393         path = unit_dbus_path_from_name(unit);
4394         if (!path)
4395                 return -ENOMEM;
4396
4397         r = sd_bus_get_property(
4398                         manager->bus,
4399                         "org.freedesktop.systemd1",
4400                         path,
4401                         "org.freedesktop.systemd1.Unit",
4402                         "ActiveState",
4403                         &error,
4404                         &reply,
4405                         "s");
4406         if (r < 0) {
4407                 /* systemd might have dropped off momentarily, let's
4408                  * not make this an error */
4409                 if (sd_bus_error_has_names(&error, SD_BUS_ERROR_NO_REPLY,
4410                                                    SD_BUS_ERROR_DISCONNECTED))
4411                         return true;
4412
4413                 /* If the unit is already unloaded then it's not
4414                  * active */
4415                 if (sd_bus_error_has_names(&error, BUS_ERROR_NO_SUCH_UNIT,
4416                                                    BUS_ERROR_LOAD_FAILED))
4417                         return false;
4418
4419                 sd_bus_error_move(ret_error, &error);
4420                 return r;
4421         }
4422
4423         r = sd_bus_message_read(reply, "s", &state);
4424         if (r < 0)
4425                 return r;
4426
4427         return !STR_IN_SET(state, "inactive", "failed");
4428 }
4429
4430 int manager_job_is_active(Manager *manager, const char *path, sd_bus_error *ret_error) {
4431         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
4432         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
4433         int r;
4434
4435         assert(manager);
4436         assert(path);
4437
4438         r = sd_bus_get_property(
4439                         manager->bus,
4440                         "org.freedesktop.systemd1",
4441                         path,
4442                         "org.freedesktop.systemd1.Job",
4443                         "State",
4444                         &error,
4445                         &reply,
4446                         "s");
4447         if (r < 0) {
4448                 if (sd_bus_error_has_names(&error, SD_BUS_ERROR_NO_REPLY,
4449                                                    SD_BUS_ERROR_DISCONNECTED))
4450                         return true;
4451
4452                 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_OBJECT))
4453                         return false;
4454
4455                 sd_bus_error_move(ret_error, &error);
4456                 return r;
4457         }
4458
4459         /* We don't actually care about the state really. The fact
4460          * that we could read the job state is enough for us */
4461
4462         return true;
4463 }