src/login/logind-dbus.c

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