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