src/login/logind-dbus.c

   1 /***
   2   This file is part of systemd.
   3
   4   Copyright 2011 Lennart Poettering
   5
   6   systemd is free software; you can redistribute it and/or modify it
   7   under the terms of the GNU Lesser General Public License as published by
   8   the Free Software Foundation; either version 2.1 of the License, or
   9   (at your option) any later version.
  10
  11   systemd is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14   Lesser General Public License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public License
  17   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  18 ***/
  19
  20 #include <errno.h>
  21 #include <pwd.h>
  22 #include <string.h>
  23 #include <unistd.h>
  24
  25 #include "sd-messages.h"
  26
  27 #include "alloc-util.h"
  28 #include "audit-util.h"
  29 #include "bus-common-errors.h"
  30 #include "bus-error.h"
  31 #include "bus-util.h"
  32 #include "dirent-util.h"
  33 //#include "efivars.h"
  34 #include "escape.h"
  35 #include "fd-util.h"
  36 #include "fileio-label.h"
  37 #include "format-util.h"
  38 #include "fs-util.h"
  39 #include "logind.h"
  40 #include "mkdir.h"
  41 #include "path-util.h"
  42 #include "process-util.h"
  43 #include "selinux-util.h"
  44 #include "sleep-config.h"
  45 //#include "special.h"
  46 #include "strv.h"
  47 #include "terminal-util.h"
  48 #include "udev-util.h"
  49 #include "unit-name.h"
  50 #include "user-util.h"
  51 #include "utmp-wtmp.h"
  52
  53 /// Additional includes needed by elogind
  54 #include "elogind-dbus.h"
  55
  56 int manager_get_session_from_creds(Manager *m, sd_bus_message *message, const char *name, sd_bus_error *error, Session **ret) {
  57         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
  58         Session *session;
  59         int r;
  60
  61         assert(m);
  62         assert(message);
  63         assert(ret);
  64
  65         if (isempty(name)) {
  66                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_SESSION|SD_BUS_CREDS_AUGMENT, &creds);
  67                 if (r < 0)
  68                         return r;
  69
  70                 r = sd_bus_creds_get_session(creds, &name);
  71                 if (r == -ENXIO)
  72                         return sd_bus_error_setf(error, BUS_ERROR_NO_SESSION_FOR_PID,
  73                                                  "Caller does not belong to any known session");
  74                 if (r < 0)
  75                         return r;
  76         }
  77
  78         session = hashmap_get(m->sessions, name);
  79         if (!session)
  80                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SESSION, "No session '%s' known", name);
  81
  82         *ret = session;
  83         return 0;
  84 }
  85
  86 int manager_get_user_from_creds(Manager *m, sd_bus_message *message, uid_t uid, sd_bus_error *error, User **ret) {
  87         User *user;
  88         int r;
  89
  90         assert(m);
  91         assert(message);
  92         assert(ret);
  93
  94         if (!uid_is_valid(uid)) {
  95                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
  96
  97                 /* Note that we get the owner UID of the session, not the actual client UID here! */
  98                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds);
  99                 if (r < 0)
 100                         return r;
 101
 102                 r = sd_bus_creds_get_owner_uid(creds, &uid);
 103                 if (r < 0)
 104                         return r;
 105         }
 106
 107         user = hashmap_get(m->users, UID_TO_PTR(uid));
 108         if (!user)
 109                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_USER, "No user "UID_FMT" known or logged in", uid);
 110
 111         *ret = user;
 112         return 0;
 113 }
 114
 115 int manager_get_seat_from_creds(Manager *m, sd_bus_message *message, const char *name, sd_bus_error *error, Seat **ret) {
 116         Seat *seat;
 117         int r;
 118
 119         assert(m);
 120         assert(message);
 121         assert(ret);
 122
 123         if (isempty(name)) {
 124                 Session *session;
 125
 126                 r = manager_get_session_from_creds(m, message, NULL, error, &session);
 127                 if (r < 0)
 128                         return r;
 129
 130                 seat = session->seat;
 131                 if (!seat)
 132                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "Session has no seat.");
 133         } else {
 134                 seat = hashmap_get(m->seats, name);
 135                 if (!seat)
 136                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "No seat '%s' known", name);
 137         }
 138
 139         *ret = seat;
 140         return 0;
 141 }
 142
 143 static int property_get_idle_hint(
 144                 sd_bus *bus,
 145                 const char *path,
 146                 const char *interface,
 147                 const char *property,
 148                 sd_bus_message *reply,
 149                 void *userdata,
 150                 sd_bus_error *error) {
 151
 152         Manager *m = userdata;
 153
 154         assert(bus);
 155         assert(reply);
 156         assert(m);
 157
 158         return sd_bus_message_append(reply, "b", manager_get_idle_hint(m, NULL) > 0);
 159 }
 160
 161 static int property_get_idle_since_hint(
 162                 sd_bus *bus,
 163                 const char *path,
 164                 const char *interface,
 165                 const char *property,
 166                 sd_bus_message *reply,
 167                 void *userdata,
 168                 sd_bus_error *error) {
 169
 170         Manager *m = userdata;
 171         dual_timestamp t = DUAL_TIMESTAMP_NULL;
 172
 173         assert(bus);
 174         assert(reply);
 175         assert(m);
 176
 177         manager_get_idle_hint(m, &t);
 178
 179         return sd_bus_message_append(reply, "t", streq(property, "IdleSinceHint") ? t.realtime : t.monotonic);
 180 }
 181
 182 static int property_get_inhibited(
 183                 sd_bus *bus,
 184                 const char *path,
 185                 const char *interface,
 186                 const char *property,
 187                 sd_bus_message *reply,
 188                 void *userdata,
 189                 sd_bus_error *error) {
 190
 191         Manager *m = userdata;
 192         InhibitWhat w;
 193
 194         assert(bus);
 195         assert(reply);
 196         assert(m);
 197
 198         w = manager_inhibit_what(m, streq(property, "BlockInhibited") ? INHIBIT_BLOCK : INHIBIT_DELAY);
 199
 200         return sd_bus_message_append(reply, "s", inhibit_what_to_string(w));
 201 }
 202
 203 static int property_get_preparing(
 204                 sd_bus *bus,
 205                 const char *path,
 206                 const char *interface,
 207                 const char *property,
 208                 sd_bus_message *reply,
 209                 void *userdata,
 210                 sd_bus_error *error) {
 211
 212         Manager *m = userdata;
 213         bool b;
 214
 215         assert(bus);
 216         assert(reply);
 217         assert(m);
 218
 219         if (streq(property, "PreparingForShutdown"))
 220                 b = !!(m->action_what & INHIBIT_SHUTDOWN);
 221         else
 222                 b = !!(m->action_what & INHIBIT_SLEEP);
 223
 224         return sd_bus_message_append(reply, "b", b);
 225 }
 226
 227 static int property_get_scheduled_shutdown(
 228                 sd_bus *bus,
 229                 const char *path,
 230                 const char *interface,
 231                 const char *property,
 232                 sd_bus_message *reply,
 233                 void *userdata,
 234                 sd_bus_error *error) {
 235
 236         Manager *m = userdata;
 237         int r;
 238
 239         assert(bus);
 240         assert(reply);
 241         assert(m);
 242
 243         r = sd_bus_message_open_container(reply, 'r', "st");
 244         if (r < 0)
 245                 return r;
 246
 247         r = sd_bus_message_append(reply, "st", m->scheduled_shutdown_type, m->scheduled_shutdown_timeout);
 248         if (r < 0)
 249                 return r;
 250
 251         return sd_bus_message_close_container(reply);
 252 }
 253
 254 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_handle_action, handle_action, HandleAction);
 255
 256 static int property_get_docked(
 257                 sd_bus *bus,
 258                 const char *path,
 259                 const char *interface,
 260                 const char *property,
 261                 sd_bus_message *reply,
 262                 void *userdata,
 263                 sd_bus_error *error) {
 264
 265         Manager *m = userdata;
 266
 267         assert(bus);
 268         assert(reply);
 269         assert(m);
 270
 271         return sd_bus_message_append(reply, "b", manager_is_docked_or_external_displays(m));
 272 }
 273
 274 static int property_get_current_sessions(
 275                 sd_bus *bus,
 276                 const char *path,
 277                 const char *interface,
 278                 const char *property,
 279                 sd_bus_message *reply,
 280                 void *userdata,
 281                 sd_bus_error *error) {
 282
 283         Manager *m = userdata;
 284
 285         assert(bus);
 286         assert(reply);
 287         assert(m);
 288
 289         return sd_bus_message_append(reply, "t", (uint64_t) hashmap_size(m->sessions));
 290 }
 291
 292 static int property_get_current_inhibitors(
 293                 sd_bus *bus,
 294                 const char *path,
 295                 const char *interface,
 296                 const char *property,
 297                 sd_bus_message *reply,
 298                 void *userdata,
 299                 sd_bus_error *error) {
 300
 301         Manager *m = userdata;
 302
 303         assert(bus);
 304         assert(reply);
 305         assert(m);
 306
 307         return sd_bus_message_append(reply, "t", (uint64_t) hashmap_size(m->inhibitors));
 308 }
 309
 310 static int method_get_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 311         _cleanup_free_ char *p = NULL;
 312         Manager *m = userdata;
 313         const char *name;
 314         Session *session;
 315         int r;
 316
 317         assert(message);
 318         assert(m);
 319
 320         r = sd_bus_message_read(message, "s", &name);
 321         if (r < 0)
 322                 return r;
 323
 324         r = manager_get_session_from_creds(m, message, name, error, &session);
 325         if (r < 0)
 326                 return r;
 327
 328         p = session_bus_path(session);
 329         if (!p)
 330                 return -ENOMEM;
 331
 332         return sd_bus_reply_method_return(message, "o", p);
 333 }
 334
 335 static int method_get_session_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 336         _cleanup_free_ char *p = NULL;
 337         Session *session = NULL;
 338         Manager *m = userdata;
 339         pid_t pid;
 340         int r;
 341
 342         assert(message);
 343         assert(m);
 344
 345         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 346
 347         r = sd_bus_message_read(message, "u", &pid);
 348         if (r < 0)
 349                 return r;
 350         if (pid < 0)
 351                 return -EINVAL;
 352
 353         if (pid == 0) {
 354                 r = manager_get_session_from_creds(m, message, NULL, error, &session);
 355                 if (r < 0)
 356                         return r;
 357         } else {
 358                 r = manager_get_session_by_pid(m, pid, &session);
 359                 if (r < 0)
 360                         return r;
 361
 362                 if (!session)
 363                         return sd_bus_error_setf(error, BUS_ERROR_NO_SESSION_FOR_PID, "PID "PID_FMT" does not belong to any known session", pid);
 364         }
 365
 366         p = session_bus_path(session);
 367         if (!p)
 368                 return -ENOMEM;
 369
 370         return sd_bus_reply_method_return(message, "o", p);
 371 }
 372
 373 static int method_get_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 374         _cleanup_free_ char *p = NULL;
 375         Manager *m = userdata;
 376         uint32_t uid;
 377         User *user;
 378         int r;
 379
 380         assert(message);
 381         assert(m);
 382
 383         r = sd_bus_message_read(message, "u", &uid);
 384         if (r < 0)
 385                 return r;
 386
 387         r = manager_get_user_from_creds(m, message, uid, error, &user);
 388         if (r < 0)
 389                 return r;
 390
 391         p = user_bus_path(user);
 392         if (!p)
 393                 return -ENOMEM;
 394
 395         return sd_bus_reply_method_return(message, "o", p);
 396 }
 397
 398 static int method_get_user_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 399         _cleanup_free_ char *p = NULL;
 400         Manager *m = userdata;
 401         User *user = NULL;
 402         pid_t pid;
 403         int r;
 404
 405         assert(message);
 406         assert(m);
 407
 408         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 409
 410         r = sd_bus_message_read(message, "u", &pid);
 411         if (r < 0)
 412                 return r;
 413         if (pid < 0)
 414                 return -EINVAL;
 415
 416         if (pid == 0) {
 417                 r = manager_get_user_from_creds(m, message, UID_INVALID, error, &user);
 418                 if (r < 0)
 419                         return r;
 420         } else {
 421                 r = manager_get_user_by_pid(m, pid, &user);
 422                 if (r < 0)
 423                         return r;
 424                 if (!user)
 425                         return sd_bus_error_setf(error, BUS_ERROR_NO_USER_FOR_PID, "PID "PID_FMT" does not belong to any known or logged in user", pid);
 426         }
 427
 428         p = user_bus_path(user);
 429         if (!p)
 430                 return -ENOMEM;
 431
 432         return sd_bus_reply_method_return(message, "o", p);
 433 }
 434
 435 static int method_get_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 436         _cleanup_free_ char *p = NULL;
 437         Manager *m = userdata;
 438         const char *name;
 439         Seat *seat;
 440         int r;
 441
 442         assert(message);
 443         assert(m);
 444
 445         r = sd_bus_message_read(message, "s", &name);
 446         if (r < 0)
 447                 return r;
 448
 449         r = manager_get_seat_from_creds(m, message, name, error, &seat);
 450         if (r < 0)
 451                 return r;
 452
 453         p = seat_bus_path(seat);
 454         if (!p)
 455                 return -ENOMEM;
 456
 457         return sd_bus_reply_method_return(message, "o", p);
 458 }
 459
 460 static int method_list_sessions(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 461         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 462         Manager *m = userdata;
 463         Session *session;
 464         Iterator i;
 465         int r;
 466
 467         assert(message);
 468         assert(m);
 469
 470         r = sd_bus_message_new_method_return(message, &reply);
 471         if (r < 0)
 472                 return r;
 473
 474         r = sd_bus_message_open_container(reply, 'a', "(susso)");
 475         if (r < 0)
 476                 return r;
 477
 478         HASHMAP_FOREACH(session, m->sessions, i) {
 479                 _cleanup_free_ char *p = NULL;
 480
 481                 p = session_bus_path(session);
 482                 if (!p)
 483                         return -ENOMEM;
 484
 485                 r = sd_bus_message_append(reply, "(susso)",
 486                                           session->id,
 487                                           (uint32_t) session->user->uid,
 488                                           session->user->name,
 489                                           session->seat ? session->seat->id : "",
 490                                           p);
 491                 if (r < 0)
 492                         return r;
 493         }
 494
 495         r = sd_bus_message_close_container(reply);
 496         if (r < 0)
 497                 return r;
 498
 499         return sd_bus_send(NULL, reply, NULL);
 500 }
 501
 502 static int method_list_users(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 503         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 504         Manager *m = userdata;
 505         User *user;
 506         Iterator i;
 507         int r;
 508
 509         assert(message);
 510         assert(m);
 511
 512         r = sd_bus_message_new_method_return(message, &reply);
 513         if (r < 0)
 514                 return r;
 515
 516         r = sd_bus_message_open_container(reply, 'a', "(uso)");
 517         if (r < 0)
 518                 return r;
 519
 520         HASHMAP_FOREACH(user, m->users, i) {
 521                 _cleanup_free_ char *p = NULL;
 522
 523                 p = user_bus_path(user);
 524                 if (!p)
 525                         return -ENOMEM;
 526
 527                 r = sd_bus_message_append(reply, "(uso)",
 528                                           (uint32_t) user->uid,
 529                                           user->name,
 530                                           p);
 531                 if (r < 0)
 532                         return r;
 533         }
 534
 535         r = sd_bus_message_close_container(reply);
 536         if (r < 0)
 537                 return r;
 538
 539         return sd_bus_send(NULL, reply, NULL);
 540 }
 541
 542 static int method_list_seats(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 543         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 544         Manager *m = userdata;
 545         Seat *seat;
 546         Iterator i;
 547         int r;
 548
 549         assert(message);
 550         assert(m);
 551
 552         r = sd_bus_message_new_method_return(message, &reply);
 553         if (r < 0)
 554                 return r;
 555
 556         r = sd_bus_message_open_container(reply, 'a', "(so)");
 557         if (r < 0)
 558                 return r;
 559
 560         HASHMAP_FOREACH(seat, m->seats, i) {
 561                 _cleanup_free_ char *p = NULL;
 562
 563                 p = seat_bus_path(seat);
 564                 if (!p)
 565                         return -ENOMEM;
 566
 567                 r = sd_bus_message_append(reply, "(so)", seat->id, p);
 568                 if (r < 0)
 569                         return r;
 570         }
 571
 572         r = sd_bus_message_close_container(reply);
 573         if (r < 0)
 574                 return r;
 575
 576         return sd_bus_send(NULL, reply, NULL);
 577 }
 578
 579 static int method_list_inhibitors(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 580         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 581         Manager *m = userdata;
 582         Inhibitor *inhibitor;
 583         Iterator i;
 584         int r;
 585
 586         assert(message);
 587         assert(m);
 588
 589         r = sd_bus_message_new_method_return(message, &reply);
 590         if (r < 0)
 591                 return r;
 592
 593         r = sd_bus_message_open_container(reply, 'a', "(ssssuu)");
 594         if (r < 0)
 595                 return r;
 596
 597         HASHMAP_FOREACH(inhibitor, m->inhibitors, i) {
 598
 599                 r = sd_bus_message_append(reply, "(ssssuu)",
 600                                           strempty(inhibit_what_to_string(inhibitor->what)),
 601                                           strempty(inhibitor->who),
 602                                           strempty(inhibitor->why),
 603                                           strempty(inhibit_mode_to_string(inhibitor->mode)),
 604                                           (uint32_t) inhibitor->uid,
 605                                           (uint32_t) inhibitor->pid);
 606                 if (r < 0)
 607                         return r;
 608         }
 609
 610         r = sd_bus_message_close_container(reply);
 611         if (r < 0)
 612                 return r;
 613
 614         return sd_bus_send(NULL, reply, NULL);
 615 }
 616
 617 static int method_create_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 618         const char *service, *type, *class, *cseat, *tty, *display, *remote_user, *remote_host, *desktop;
 619         uint32_t audit_id = 0;
 620         _cleanup_free_ char *id = NULL;
 621         Session *session = NULL;
 622         Manager *m = userdata;
 623         User *user = NULL;
 624         Seat *seat = NULL;
 625         pid_t leader;
 626         uid_t uid;
 627         int remote;
 628         uint32_t vtnr = 0;
 629         SessionType t;
 630         SessionClass c;
 631         int r;
 632
 633         assert(message);
 634         assert(m);
 635
 636         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 637         assert_cc(sizeof(uid_t) == sizeof(uint32_t));
 638
 639         r = sd_bus_message_read(message, "uusssssussbss", &uid, &leader, &service, &type, &class, &desktop, &cseat, &vtnr, &tty, &display, &remote, &remote_user, &remote_host);
 640         if (r < 0)
 641                 return r;
 642
 643         if (!uid_is_valid(uid))
 644                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid UID");
 645         if (leader < 0 || leader == 1)
 646                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid leader PID");
 647
 648         if (isempty(type))
 649                 t = _SESSION_TYPE_INVALID;
 650         else {
 651                 t = session_type_from_string(type);
 652                 if (t < 0)
 653                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid session type %s", type);
 654         }
 655
 656         if (isempty(class))
 657                 c = _SESSION_CLASS_INVALID;
 658         else {
 659                 c = session_class_from_string(class);
 660                 if (c < 0)
 661                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid session class %s", class);
 662         }
 663
 664         if (isempty(desktop))
 665                 desktop = NULL;
 666         else {
 667                 if (!string_is_safe(desktop))
 668                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid desktop string %s", desktop);
 669         }
 670
 671         if (isempty(cseat))
 672                 seat = NULL;
 673         else {
 674                 seat = hashmap_get(m->seats, cseat);
 675                 if (!seat)
 676                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "No seat '%s' known", cseat);
 677         }
 678
 679         if (tty_is_vc(tty)) {
 680                 int v;
 681
 682                 if (!seat)
 683                         seat = m->seat0;
 684                 else if (seat != m->seat0)
 685                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "TTY %s is virtual console but seat %s is not seat0", tty, seat->id);
 686
 687                 v = vtnr_from_tty(tty);
 688                 if (v <= 0)
 689                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Cannot determine VT number from virtual console TTY %s", tty);
 690
 691                 if (!vtnr)
 692                         vtnr = (uint32_t) v;
 693                 else if (vtnr != (uint32_t) v)
 694                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Specified TTY and VT number do not match");
 695
 696         } else if (tty_is_console(tty)) {
 697
 698                 if (!seat)
 699                         seat = m->seat0;
 700                 else if (seat != m->seat0)
 701                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Console TTY specified but seat is not seat0");
 702
 703                 if (vtnr != 0)
 704                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Console TTY specified but VT number is not 0");
 705         }
 706
 707         if (seat) {
 708                 if (seat_has_vts(seat)) {
 709                         if (!vtnr || vtnr > 63)
 710                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "VT number out of range");
 711                 } else {
 712                         if (vtnr != 0)
 713                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Seat has no VTs but VT number not 0");
 714                 }
 715         }
 716
 717         r = sd_bus_message_enter_container(message, 'a', "(sv)");
 718         if (r < 0)
 719                 return r;
 720
 721         if (t == _SESSION_TYPE_INVALID) {
 722                 if (!isempty(display))
 723                         t = SESSION_X11;
 724                 else if (!isempty(tty))
 725                         t = SESSION_TTY;
 726                 else
 727                         t = SESSION_UNSPECIFIED;
 728         }
 729
 730         if (c == _SESSION_CLASS_INVALID) {
 731                 if (t == SESSION_UNSPECIFIED)
 732                         c = SESSION_BACKGROUND;
 733                 else
 734                         c = SESSION_USER;
 735         }
 736
 737         if (leader == 0) {
 738                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 739
 740                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 741                 if (r < 0)
 742                         return r;
 743
 744                 r = sd_bus_creds_get_pid(creds, (pid_t*) &leader);
 745                 if (r < 0)
 746                         return r;
 747         }
 748
 749         r = manager_get_session_by_pid(m, leader, NULL);
 750         if (r > 0)
 751                 return sd_bus_error_setf(error, BUS_ERROR_SESSION_BUSY, "Already running in a session");
 752
 753         /*
 754          * Old gdm and lightdm start the user-session on the same VT as
 755          * the greeter session. But they destroy the greeter session
 756          * after the user-session and want the user-session to take
 757          * over the VT. We need to support this for
 758          * backwards-compatibility, so make sure we allow new sessions
 759          * on a VT that a greeter is running on. Furthermore, to allow
 760          * re-logins, we have to allow a greeter to take over a used VT for
 761          * the exact same reasons.
 762          */
 763         if (c != SESSION_GREETER &&
 764             vtnr > 0 &&
 765             vtnr < m->seat0->position_count &&
 766             m->seat0->positions[vtnr] &&
 767             m->seat0->positions[vtnr]->class != SESSION_GREETER)
 768                 return sd_bus_error_setf(error, BUS_ERROR_SESSION_BUSY, "Already occupied by a session");
 769
 770         if (hashmap_size(m->sessions) >= m->sessions_max)
 771                 return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED, "Maximum number of sessions (%" PRIu64 ") reached, refusing further sessions.", m->sessions_max);
 772
 773         (void) audit_session_from_pid(leader, &audit_id);
 774         if (audit_session_is_valid(audit_id)) {
 775                 /* Keep our session IDs and the audit session IDs in sync */
 776
 777                 if (asprintf(&id, "%"PRIu32, audit_id) < 0)
 778                         return -ENOMEM;
 779
 780                 /* Wut? There's already a session by this name and we
 781                  * didn't find it above? Weird, then let's not trust
 782                  * the audit data and let's better register a new
 783                  * ID */
 784                 if (hashmap_get(m->sessions, id)) {
 785                         log_warning("Existing logind session ID %s used by new audit session, ignoring", id);
 786                         audit_id = AUDIT_SESSION_INVALID;
 787
 788                         id = mfree(id);
 789                 }
 790         }
 791
 792         if (!id) {
 793                 do {
 794                         id = mfree(id);
 795
 796                         if (asprintf(&id, "c%lu", ++m->session_counter) < 0)
 797                                 return -ENOMEM;
 798
 799                 } while (hashmap_get(m->sessions, id));
 800         }
 801
 802         r = manager_add_user_by_uid(m, uid, &user);
 803         if (r < 0)
 804                 goto fail;
 805
 806         r = manager_add_session(m, id, &session);
 807         if (r < 0)
 808                 goto fail;
 809
 810         session_set_user(session, user);
 811
 812         session->leader = leader;
 813         session->audit_id = audit_id;
 814         session->type = t;
 815         session->class = c;
 816         session->remote = remote;
 817         session->vtnr = vtnr;
 818
 819         if (!isempty(tty)) {
 820                 session->tty = strdup(tty);
 821                 if (!session->tty) {
 822                         r = -ENOMEM;
 823                         goto fail;
 824                 }
 825         }
 826
 827         if (!isempty(display)) {
 828                 session->display = strdup(display);
 829                 if (!session->display) {
 830                         r = -ENOMEM;
 831                         goto fail;
 832                 }
 833         }
 834
 835         if (!isempty(remote_user)) {
 836                 session->remote_user = strdup(remote_user);
 837                 if (!session->remote_user) {
 838                         r = -ENOMEM;
 839                         goto fail;
 840                 }
 841         }
 842
 843         if (!isempty(remote_host)) {
 844                 session->remote_host = strdup(remote_host);
 845                 if (!session->remote_host) {
 846                         r = -ENOMEM;
 847                         goto fail;
 848                 }
 849         }
 850
 851         if (!isempty(service)) {
 852                 session->service = strdup(service);
 853                 if (!session->service) {
 854                         r = -ENOMEM;
 855                         goto fail;
 856                 }
 857         }
 858
 859         if (!isempty(desktop)) {
 860                 session->desktop = strdup(desktop);
 861                 if (!session->desktop) {
 862                         r = -ENOMEM;
 863                         goto fail;
 864                 }
 865         }
 866
 867         if (seat) {
 868                 r = seat_attach_session(seat, session);
 869                 if (r < 0)
 870                         goto fail;
 871         }
 872
 873         r = session_start(session);
 874         if (r < 0)
 875                 goto fail;
 876
 877         session->create_message = sd_bus_message_ref(message);
 878
 879 #if 0 /// UNNEEDED by elogind
 880         /* Now, let's wait until the slice unit and stuff got
 881          * created. We send the reply back from
 882          * session_send_create_reply(). */
 883 #else
 884         /* We reply directly. */
 885
 886         r = session_send_create_reply(session, NULL);
 887         if (r < 0)
 888                 goto fail;
 889 #endif // 0
 890
 891         return 1;
 892
 893 fail:
 894         if (session)
 895                 session_add_to_gc_queue(session);
 896
 897         if (user)
 898                 user_add_to_gc_queue(user);
 899
 900         return r;
 901 }
 902
 903 static int method_release_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 904         Manager *m = userdata;
 905         Session *session;
 906         const char *name;
 907         int r;
 908
 909         assert(message);
 910         assert(m);
 911
 912         r = sd_bus_message_read(message, "s", &name);
 913         if (r < 0)
 914                 return r;
 915
 916         r = manager_get_session_from_creds(m, message, name, error, &session);
 917         if (r < 0)
 918                 return r;
 919
 920         r = session_release(session);
 921         if (r < 0)
 922                 return r;
 923
 924 #if 1 /// elogind must queue this session
 925         session_add_to_gc_queue(session);
 926 #endif // 1
 927         return sd_bus_reply_method_return(message, NULL);
 928 }
 929
 930 static int method_activate_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 931         Manager *m = userdata;
 932         Session *session;
 933         const char *name;
 934         int r;
 935
 936         assert(message);
 937         assert(m);
 938
 939         r = sd_bus_message_read(message, "s", &name);
 940         if (r < 0)
 941                 return r;
 942
 943         r = manager_get_session_from_creds(m, message, name, error, &session);
 944         if (r < 0)
 945                 return r;
 946
 947         return bus_session_method_activate(message, session, error);
 948 }
 949
 950 static int method_activate_session_on_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 951         const char *session_name, *seat_name;
 952         Manager *m = userdata;
 953         Session *session;
 954         Seat *seat;
 955         int r;
 956
 957         assert(message);
 958         assert(m);
 959
 960         /* Same as ActivateSession() but refuses to work if
 961          * the seat doesn't match */
 962
 963         r = sd_bus_message_read(message, "ss", &session_name, &seat_name);
 964         if (r < 0)
 965                 return r;
 966
 967         r = manager_get_session_from_creds(m, message, session_name, error, &session);
 968         if (r < 0)
 969                 return r;
 970
 971         r = manager_get_seat_from_creds(m, message, seat_name, error, &seat);
 972         if (r < 0)
 973                 return r;
 974
 975         if (session->seat != seat)
 976                 return sd_bus_error_setf(error, BUS_ERROR_SESSION_NOT_ON_SEAT, "Session %s not on seat %s", session_name, seat_name);
 977
 978         r = session_activate(session);
 979         if (r < 0)
 980                 return r;
 981
 982         return sd_bus_reply_method_return(message, NULL);
 983 }
 984
 985 static int method_lock_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 986         Manager *m = userdata;
 987         Session *session;
 988         const char *name;
 989         int r;
 990
 991         assert(message);
 992         assert(m);
 993
 994         r = sd_bus_message_read(message, "s", &name);
 995         if (r < 0)
 996                 return r;
 997
 998         r = manager_get_session_from_creds(m, message, name, error, &session);
 999         if (r < 0)
1000                 return r;
1001
1002         return bus_session_method_lock(message, session, error);
1003 }
1004
1005 static int method_lock_sessions(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1006         Manager *m = userdata;
1007         int r;
1008
1009         assert(message);
1010         assert(m);
1011
1012         r = bus_verify_polkit_async(
1013                         message,
1014                         CAP_SYS_ADMIN,
1015                         "org.freedesktop.login1.lock-sessions",
1016                         NULL,
1017                         false,
1018                         UID_INVALID,
1019                         &m->polkit_registry,
1020                         error);
1021         if (r < 0)
1022                 return r;
1023         if (r == 0)
1024                 return 1; /* Will call us back */
1025
1026         r = session_send_lock_all(m, streq(sd_bus_message_get_member(message), "LockSessions"));
1027         if (r < 0)
1028                 return r;
1029
1030         return sd_bus_reply_method_return(message, NULL);
1031 }
1032
1033 static int method_kill_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1034         const char *name;
1035         Manager *m = userdata;
1036         Session *session;
1037         int r;
1038
1039         assert(message);
1040         assert(m);
1041
1042         r = sd_bus_message_read(message, "s", &name);
1043         if (r < 0)
1044                 return r;
1045
1046         r = manager_get_session_from_creds(m, message, name, error, &session);
1047         if (r < 0)
1048                 return r;
1049
1050         return bus_session_method_kill(message, session, error);
1051 }
1052
1053 static int method_kill_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1054         Manager *m = userdata;
1055         uint32_t uid;
1056         User *user;
1057         int r;
1058
1059         assert(message);
1060         assert(m);
1061
1062         r = sd_bus_message_read(message, "u", &uid);
1063         if (r < 0)
1064                 return r;
1065
1066         r = manager_get_user_from_creds(m, message, uid, error, &user);
1067         if (r < 0)
1068                 return r;
1069
1070         return bus_user_method_kill(message, user, error);
1071 }
1072
1073 static int method_terminate_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1074         Manager *m = userdata;
1075         const char *name;
1076         Session *session;
1077         int r;
1078
1079         assert(message);
1080         assert(m);
1081
1082         r = sd_bus_message_read(message, "s", &name);
1083         if (r < 0)
1084                 return r;
1085
1086         r = manager_get_session_from_creds(m, message, name, error, &session);
1087         if (r < 0)
1088                 return r;
1089
1090         return bus_session_method_terminate(message, session, error);
1091 }
1092
1093 static int method_terminate_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1094         Manager *m = userdata;
1095         uint32_t uid;
1096         User *user;
1097         int r;
1098
1099         assert(message);
1100         assert(m);
1101
1102         r = sd_bus_message_read(message, "u", &uid);
1103         if (r < 0)
1104                 return r;
1105
1106         r = manager_get_user_from_creds(m, message, uid, error, &user);
1107         if (r < 0)
1108                 return r;
1109
1110         return bus_user_method_terminate(message, user, error);
1111 }
1112
1113 static int method_terminate_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1114         Manager *m = userdata;
1115         const char *name;
1116         Seat *seat;
1117         int r;
1118
1119         assert(message);
1120         assert(m);
1121
1122         r = sd_bus_message_read(message, "s", &name);
1123         if (r < 0)
1124                 return r;
1125
1126         r = manager_get_seat_from_creds(m, message, name, error, &seat);
1127         if (r < 0)
1128                 return r;
1129
1130         return bus_seat_method_terminate(message, seat, error);
1131 }
1132
1133 static int method_set_user_linger(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1134         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
1135         _cleanup_free_ char *cc = NULL;
1136         Manager *m = userdata;
1137         int r, b, interactive;
1138         struct passwd *pw;
1139         const char *path;
1140         uint32_t uid, auth_uid;
1141
1142         assert(message);
1143         assert(m);
1144
1145         r = sd_bus_message_read(message, "ubb", &uid, &b, &interactive);
1146         if (r < 0)
1147                 return r;
1148
1149         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID |
1150                                                SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds);
1151         if (r < 0)
1152                 return r;
1153
1154         if (!uid_is_valid(uid)) {
1155                 /* Note that we get the owner UID of the session or user unit,
1156                  * not the actual client UID here! */
1157                 r = sd_bus_creds_get_owner_uid(creds, &uid);
1158                 if (r < 0)
1159                         return r;
1160         }
1161
1162         /* owner_uid is racy, so for authorization we must use euid */
1163         r = sd_bus_creds_get_euid(creds, &auth_uid);
1164         if (r < 0)
1165                 return r;
1166
1167         errno = 0;
1168         pw = getpwuid(uid);
1169         if (!pw)
1170                 return errno > 0 ? -errno : -ENOENT;
1171
1172         r = bus_verify_polkit_async(
1173                         message,
1174                         CAP_SYS_ADMIN,
1175                         uid == auth_uid ? "org.freedesktop.login1.set-self-linger" :
1176                                           "org.freedesktop.login1.set-user-linger",
1177                         NULL,
1178                         interactive,
1179                         UID_INVALID,
1180                         &m->polkit_registry,
1181                         error);
1182         if (r < 0)
1183                 return r;
1184         if (r == 0)
1185                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1186
1187         mkdir_p_label("/var/lib/systemd", 0755);
1188
1189         r = mkdir_safe_label("/var/lib/systemd/linger", 0755, 0, 0);
1190         if (r < 0)
1191                 return r;
1192
1193         cc = cescape(pw->pw_name);
1194         if (!cc)
1195                 return -ENOMEM;
1196
1197         path = strjoina("/var/lib/systemd/linger/", cc);
1198         if (b) {
1199                 User *u;
1200
1201                 r = touch(path);
1202                 if (r < 0)
1203                         return r;
1204
1205                 if (manager_add_user_by_uid(m, uid, &u) >= 0)
1206                         user_start(u);
1207
1208         } else {
1209                 User *u;
1210
1211                 r = unlink(path);
1212                 if (r < 0 && errno != ENOENT)
1213                         return -errno;
1214
1215                 u = hashmap_get(m->users, UID_TO_PTR(uid));
1216                 if (u)
1217                         user_add_to_gc_queue(u);
1218         }
1219
1220         return sd_bus_reply_method_return(message, NULL);
1221 }
1222
1223 static int trigger_device(Manager *m, struct udev_device *d) {
1224         _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
1225         struct udev_list_entry *first, *item;
1226         int r;
1227
1228         assert(m);
1229
1230         e = udev_enumerate_new(m->udev);
1231         if (!e)
1232                 return -ENOMEM;
1233
1234         if (d) {
1235                 r = udev_enumerate_add_match_parent(e, d);
1236                 if (r < 0)
1237                         return r;
1238         }
1239
1240         r = udev_enumerate_scan_devices(e);
1241         if (r < 0)
1242                 return r;
1243
1244         first = udev_enumerate_get_list_entry(e);
1245         udev_list_entry_foreach(item, first) {
1246                 _cleanup_free_ char *t = NULL;
1247                 const char *p;
1248
1249                 p = udev_list_entry_get_name(item);
1250
1251                 t = strappend(p, "/uevent");
1252                 if (!t)
1253                         return -ENOMEM;
1254
1255                 write_string_file(t, "change", WRITE_STRING_FILE_CREATE);
1256         }
1257
1258         return 0;
1259 }
1260
1261 static int attach_device(Manager *m, const char *seat, const char *sysfs) {
1262         _cleanup_udev_device_unref_ struct udev_device *d = NULL;
1263         _cleanup_free_ char *rule = NULL, *file = NULL;
1264         const char *id_for_seat;
1265         int r;
1266
1267         assert(m);
1268         assert(seat);
1269         assert(sysfs);
1270
1271         d = udev_device_new_from_syspath(m->udev, sysfs);
1272         if (!d)
1273                 return -ENODEV;
1274
1275         if (!udev_device_has_tag(d, "seat"))
1276                 return -ENODEV;
1277
1278         id_for_seat = udev_device_get_property_value(d, "ID_FOR_SEAT");
1279         if (!id_for_seat)
1280                 return -ENODEV;
1281
1282         if (asprintf(&file, "/etc/udev/rules.d/72-seat-%s.rules", id_for_seat) < 0)
1283                 return -ENOMEM;
1284
1285         if (asprintf(&rule, "TAG==\"seat\", ENV{ID_FOR_SEAT}==\"%s\", ENV{ID_SEAT}=\"%s\"", id_for_seat, seat) < 0)
1286                 return -ENOMEM;
1287
1288         mkdir_p_label("/etc/udev/rules.d", 0755);
1289         r = write_string_file_atomic_label(file, rule);
1290         if (r < 0)
1291                 return r;
1292
1293         return trigger_device(m, d);
1294 }
1295
1296 static int flush_devices(Manager *m) {
1297         _cleanup_closedir_ DIR *d;
1298
1299         assert(m);
1300
1301         d = opendir("/etc/udev/rules.d");
1302         if (!d) {
1303                 if (errno != ENOENT)
1304                         log_warning_errno(errno, "Failed to open /etc/udev/rules.d: %m");
1305         } else {
1306                 struct dirent *de;
1307
1308                 FOREACH_DIRENT_ALL(de, d, break) {
1309                         if (!dirent_is_file(de))
1310                                 continue;
1311
1312                         if (!startswith(de->d_name, "72-seat-"))
1313                                 continue;
1314
1315                         if (!endswith(de->d_name, ".rules"))
1316                                 continue;
1317
1318                         if (unlinkat(dirfd(d), de->d_name, 0) < 0)
1319                                 log_warning_errno(errno, "Failed to unlink %s: %m", de->d_name);
1320                 }
1321         }
1322
1323         return trigger_device(m, NULL);
1324 }
1325
1326 static int method_attach_device(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1327         const char *sysfs, *seat;
1328         Manager *m = userdata;
1329         int interactive, r;
1330
1331         assert(message);
1332         assert(m);
1333
1334         r = sd_bus_message_read(message, "ssb", &seat, &sysfs, &interactive);
1335         if (r < 0)
1336                 return r;
1337
1338         if (!path_startswith(sysfs, "/sys"))
1339                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not in /sys", sysfs);
1340
1341         if (!seat_name_is_valid(seat))
1342                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Seat %s is not valid", seat);
1343
1344         r = bus_verify_polkit_async(
1345                         message,
1346                         CAP_SYS_ADMIN,
1347                         "org.freedesktop.login1.attach-device",
1348                         NULL,
1349                         interactive,
1350                         UID_INVALID,
1351                         &m->polkit_registry,
1352                         error);
1353         if (r < 0)
1354                 return r;
1355         if (r == 0)
1356                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1357
1358         r = attach_device(m, seat, sysfs);
1359         if (r < 0)
1360                 return r;
1361
1362         return sd_bus_reply_method_return(message, NULL);
1363 }
1364
1365 static int method_flush_devices(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1366         Manager *m = userdata;
1367         int interactive, r;
1368
1369         assert(message);
1370         assert(m);
1371
1372         r = sd_bus_message_read(message, "b", &interactive);
1373         if (r < 0)
1374                 return r;
1375
1376         r = bus_verify_polkit_async(
1377                         message,
1378                         CAP_SYS_ADMIN,
1379                         "org.freedesktop.login1.flush-devices",
1380                         NULL,
1381                         interactive,
1382                         UID_INVALID,
1383                         &m->polkit_registry,
1384                         error);
1385         if (r < 0)
1386                 return r;
1387         if (r == 0)
1388                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1389
1390         r = flush_devices(m);
1391         if (r < 0)
1392                 return r;
1393
1394         return sd_bus_reply_method_return(message, NULL);
1395 }
1396
1397 static int have_multiple_sessions(
1398                 Manager *m,
1399                 uid_t uid) {
1400
1401         Session *session;
1402         Iterator i;
1403
1404         assert(m);
1405
1406         /* Check for other users' sessions. Greeter sessions do not
1407          * count, and non-login sessions do not count either. */
1408         HASHMAP_FOREACH(session, m->sessions, i)
1409                 if (session->class == SESSION_USER &&
1410                     session->user->uid != uid)
1411                         return true;
1412
1413         return false;
1414 }
1415
1416 #if 0 /// elogind has its own variant in elogind-dbus.c
1417 static int bus_manager_log_shutdown(
1418                 Manager *m,
1419                 const char *unit_name) {
1420
1421         const char *p, *q;
1422
1423         assert(m);
1424         assert(unit_name);
1425
1426         if (streq(unit_name, SPECIAL_POWEROFF_TARGET)) {
1427                 p = "MESSAGE=System is powering down";
1428                 q = "SHUTDOWN=power-off";
1429         } else if (streq(unit_name, SPECIAL_REBOOT_TARGET)) {
1430                 p = "MESSAGE=System is rebooting";
1431                 q = "SHUTDOWN=reboot";
1432         } else if (streq(unit_name, SPECIAL_HALT_TARGET)) {
1433                 p = "MESSAGE=System is halting";
1434                 q = "SHUTDOWN=halt";
1435         } else if (streq(unit_name, SPECIAL_KEXEC_TARGET)) {
1436                 p = "MESSAGE=System is rebooting with kexec";
1437                 q = "SHUTDOWN=kexec";
1438         } else {
1439                 p = "MESSAGE=System is shutting down";
1440                 q = NULL;
1441         }
1442
1443         if (isempty(m->wall_message))
1444                 p = strjoina(p, ".");
1445         else
1446                 p = strjoina(p, " (", m->wall_message, ").");
1447
1448         return log_struct(LOG_NOTICE,
1449                           "MESSAGE_ID=" SD_MESSAGE_SHUTDOWN_STR,
1450                           p,
1451                           q,
1452                           NULL);
1453 }
1454 #endif // 0
1455
1456 static int lid_switch_ignore_handler(sd_event_source *e, uint64_t usec, void *userdata) {
1457         Manager *m = userdata;
1458
1459         assert(e);
1460         assert(m);
1461
1462         m->lid_switch_ignore_event_source = sd_event_source_unref(m->lid_switch_ignore_event_source);
1463         return 0;
1464 }
1465
1466 int manager_set_lid_switch_ignore(Manager *m, usec_t until) {
1467         int r;
1468
1469         assert(m);
1470
1471         if (until <= now(CLOCK_MONOTONIC))
1472                 return 0;
1473
1474         /* We want to ignore the lid switch for a while after each
1475          * suspend, and after boot-up. Hence let's install a timer for
1476          * this. As long as the event source exists we ignore the lid
1477          * switch. */
1478
1479         if (m->lid_switch_ignore_event_source) {
1480                 usec_t u;
1481
1482                 r = sd_event_source_get_time(m->lid_switch_ignore_event_source, &u);
1483                 if (r < 0)
1484                         return r;
1485
1486                 if (until <= u)
1487                         return 0;
1488
1489                 r = sd_event_source_set_time(m->lid_switch_ignore_event_source, until);
1490         } else
1491                 r = sd_event_add_time(
1492                                 m->event,
1493                                 &m->lid_switch_ignore_event_source,
1494                                 CLOCK_MONOTONIC,
1495                                 until, 0,
1496                                 lid_switch_ignore_handler, m);
1497
1498         return r;
1499 }
1500
1501 #if 0 /// elogind-dbus.c needs to access this
1502 static int send_prepare_for(Manager *m, InhibitWhat w, bool _active) {
1503 #else
1504 int send_prepare_for(Manager *m, InhibitWhat w, bool _active) {
1505 #endif // 0
1506
1507         static const char * const signal_name[_INHIBIT_WHAT_MAX] = {
1508                 [INHIBIT_SHUTDOWN] = "PrepareForShutdown",
1509                 [INHIBIT_SLEEP] = "PrepareForSleep"
1510         };
1511
1512         int active = _active;
1513
1514         assert(m);
1515         assert(w >= 0);
1516         assert(w < _INHIBIT_WHAT_MAX);
1517         assert(signal_name[w]);
1518
1519         return sd_bus_emit_signal(m->bus,
1520                                   "/org/freedesktop/login1",
1521                                   "org.freedesktop.login1.Manager",
1522                                   signal_name[w],
1523                                   "b",
1524                                   active);
1525 }
1526
1527 #if 0 /// elogind has its own variant in elogind-dbus.c
1528 static int execute_shutdown_or_sleep(
1529                 Manager *m,
1530                 InhibitWhat w,
1531                 const char *unit_name,
1532                 sd_bus_error *error) {
1533
1534         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1535         char *c = NULL;
1536         const char *p;
1537         int r;
1538
1539         assert(m);
1540         assert(w > 0);
1541         assert(w < _INHIBIT_WHAT_MAX);
1542         assert(unit_name);
1543
1544         if (w == INHIBIT_SHUTDOWN)
1545                 bus_manager_log_shutdown(m, unit_name);
1546
1547         r = sd_bus_call_method(
1548                         m->bus,
1549                         "org.freedesktop.systemd1",
1550                         "/org/freedesktop/systemd1",
1551                         "org.freedesktop.systemd1.Manager",
1552                         "StartUnit",
1553                         error,
1554                         &reply,
1555                         "ss", unit_name, "replace-irreversibly");
1556         if (r < 0)
1557                 goto error;
1558
1559         r = sd_bus_message_read(reply, "o", &p);
1560         if (r < 0)
1561                 goto error;
1562
1563         c = strdup(p);
1564         if (!c) {
1565                 r = -ENOMEM;
1566                 goto error;
1567         }
1568
1569         m->action_unit = unit_name;
1570         free(m->action_job);
1571         m->action_job = c;
1572         m->action_what = w;
1573
1574         /* Make sure the lid switch is ignored for a while */
1575         manager_set_lid_switch_ignore(m, now(CLOCK_MONOTONIC) + m->holdoff_timeout_usec);
1576
1577         return 0;
1578
1579 error:
1580         /* Tell people that they now may take a lock again */
1581         send_prepare_for(m, m->action_what, false);
1582
1583         return r;
1584 }
1585
1586 int manager_dispatch_delayed(Manager *manager, bool timeout) {
1587
1588         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1589         Inhibitor *offending = NULL;
1590         int r;
1591
1592         assert(manager);
1593
1594         if (manager->action_what == 0 || manager->action_job)
1595                 return 0;
1596
1597         if (manager_is_inhibited(manager, manager->action_what, INHIBIT_DELAY, NULL, false, false, 0, &offending)) {
1598                 _cleanup_free_ char *comm = NULL, *u = NULL;
1599
1600                 if (!timeout)
1601                         return 0;
1602
1603                 (void) get_process_comm(offending->pid, &comm);
1604                 u = uid_to_name(offending->uid);
1605
1606                 log_notice("Delay lock is active (UID "UID_FMT"/%s, PID "PID_FMT"/%s) but inhibitor timeout is reached.",
1607                            offending->uid, strna(u),
1608                            offending->pid, strna(comm));
1609         }
1610
1611         /* Actually do the operation */
1612         r = execute_shutdown_or_sleep(manager, manager->action_what, manager->action_unit, &error);
1613         if (r < 0) {
1614                 log_warning("Error during inhibitor-delayed operation (already returned success to client): %s",
1615                             bus_error_message(&error, r));
1616
1617                 manager->action_unit = NULL;
1618                 manager->action_what = 0;
1619                 return r;
1620         }
1621
1622         return 1;
1623 }
1624 #endif // 0
1625
1626 #if 0 /// elogind-dbus.c needs to access this
1627 static int manager_inhibit_timeout_handler(
1628 #else
1629 int manager_inhibit_timeout_handler(
1630 #endif // 0
1631                         sd_event_source *s,
1632                         uint64_t usec,
1633                         void *userdata) {
1634
1635         Manager *manager = userdata;
1636         int r;
1637
1638         assert(manager);
1639         assert(manager->inhibit_timeout_source == s);
1640
1641         r = manager_dispatch_delayed(manager, true);
1642         return (r < 0) ? r : 0;
1643 }
1644
1645 #if 0 /// elogind has its own variant in elogind-dbus.c
1646 static int delay_shutdown_or_sleep(
1647                 Manager *m,
1648                 InhibitWhat w,
1649                 const char *unit_name) {
1650
1651         int r;
1652         usec_t timeout_val;
1653
1654         assert(m);
1655         assert(w >= 0);
1656         assert(w < _INHIBIT_WHAT_MAX);
1657         assert(unit_name);
1658
1659         timeout_val = now(CLOCK_MONOTONIC) + m->inhibit_delay_max;
1660
1661         if (m->inhibit_timeout_source) {
1662                 r = sd_event_source_set_time(m->inhibit_timeout_source, timeout_val);
1663                 if (r < 0)
1664                         return log_error_errno(r, "sd_event_source_set_time() failed: %m");
1665
1666                 r = sd_event_source_set_enabled(m->inhibit_timeout_source, SD_EVENT_ONESHOT);
1667                 if (r < 0)
1668                         return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
1669         } else {
1670                 r = sd_event_add_time(m->event, &m->inhibit_timeout_source, CLOCK_MONOTONIC,
1671                                       timeout_val, 0, manager_inhibit_timeout_handler, m);
1672                 if (r < 0)
1673                         return r;
1674         }
1675
1676         m->action_unit = unit_name;
1677         m->action_what = w;
1678
1679         return 0;
1680 }
1681 #endif // 0
1682
1683 #if 0 /// elogind has its own variant in elogind-dbus.c
1684 int bus_manager_shutdown_or_sleep_now_or_later(
1685                 Manager *m,
1686                 const char *unit_name,
1687                 InhibitWhat w,
1688                 sd_bus_error *error) {
1689
1690         bool delayed;
1691         int r;
1692
1693         assert(m);
1694         assert(unit_name);
1695         assert(w > 0);
1696         assert(w <= _INHIBIT_WHAT_MAX);
1697         assert(!m->action_job);
1698
1699         /* Tell everybody to prepare for shutdown/sleep */
1700         send_prepare_for(m, w, true);
1701
1702         delayed =
1703                 m->inhibit_delay_max > 0 &&
1704                 manager_is_inhibited(m, w, INHIBIT_DELAY, NULL, false, false, 0, NULL);
1705
1706         log_debug_elogind("%s called for %s (%sdelayed)", __FUNCTION__,
1707                           handle_action_to_string(action),
1708                           delayed ? "" : "NOT ");
1709         if (delayed)
1710                 /* Shutdown is delayed, keep in mind what we
1711                  * want to do, and start a timeout */
1712                 r = delay_shutdown_or_sleep(m, w, unit_name);
1713         else
1714                 /* Shutdown is not delayed, execute it
1715                  * immediately */
1716                 r = execute_shutdown_or_sleep(m, w, unit_name, error);
1717
1718         return r;
1719 }
1720 #endif // 0
1721
1722 #if 0 /// elogind-dbus.c needs to access this
1723 static int verify_shutdown_creds(
1724 #else
1725 int verify_shutdown_creds(
1726 #endif // 0
1727                 Manager *m,
1728                 sd_bus_message *message,
1729                 InhibitWhat w,
1730                 bool interactive,
1731                 const char *action,
1732                 const char *action_multiple_sessions,
1733                 const char *action_ignore_inhibit,
1734                 sd_bus_error *error) {
1735
1736         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
1737         bool multiple_sessions, blocked;
1738         uid_t uid;
1739         int r;
1740
1741         assert(m);
1742         assert(message);
1743         assert(w >= 0);
1744         assert(w <= _INHIBIT_WHAT_MAX);
1745
1746         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
1747         if (r < 0)
1748                 return r;
1749
1750         r = sd_bus_creds_get_euid(creds, &uid);
1751         if (r < 0)
1752                 return r;
1753
1754         r = have_multiple_sessions(m, uid);
1755         if (r < 0)
1756                 return r;
1757
1758         multiple_sessions = r > 0;
1759         blocked = manager_is_inhibited(m, w, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
1760
1761         if (multiple_sessions && action_multiple_sessions) {
1762                 r = bus_verify_polkit_async(message, CAP_SYS_BOOT, action_multiple_sessions, NULL, interactive, UID_INVALID, &m->polkit_registry, error);
1763                 if (r < 0)
1764                         return r;
1765                 if (r == 0)
1766                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1767         }
1768
1769         if (blocked && action_ignore_inhibit) {
1770                 r = bus_verify_polkit_async(message, CAP_SYS_BOOT, action_ignore_inhibit, NULL, interactive, UID_INVALID, &m->polkit_registry, error);
1771                 if (r < 0)
1772                         return r;
1773                 if (r == 0)
1774                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1775         }
1776
1777         if (!multiple_sessions && !blocked && action) {
1778                 r = bus_verify_polkit_async(message, CAP_SYS_BOOT, action, NULL, interactive, UID_INVALID, &m->polkit_registry, error);
1779                 if (r < 0)
1780                         return r;
1781                 if (r == 0)
1782                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1783         }
1784
1785         return 0;
1786 }
1787
1788 #if 0 /// elogind has its own variant in elogind-dbus.c
1789 static int method_do_shutdown_or_sleep(
1790                 Manager *m,
1791                 sd_bus_message *message,
1792                 const char *unit_name,
1793                 InhibitWhat w,
1794                 const char *action,
1795                 const char *action_multiple_sessions,
1796                 const char *action_ignore_inhibit,
1797                 const char *sleep_verb,
1798                 sd_bus_error *error) {
1799
1800         int interactive, r;
1801
1802         assert(m);
1803         assert(message);
1804         assert(unit_name);
1805         assert(w >= 0);
1806         assert(w <= _INHIBIT_WHAT_MAX);
1807
1808         r = sd_bus_message_read(message, "b", &interactive);
1809         if (r < 0)
1810                 return r;
1811
1812         /* Don't allow multiple jobs being executed at the same time */
1813         if (m->action_what)
1814                 return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS, "There's already a shutdown or sleep operation in progress");
1815
1816         if (sleep_verb) {
1817                 r = can_sleep(sleep_verb);
1818                 if (r < 0)
1819                         return r;
1820
1821                 if (r == 0)
1822                         return sd_bus_error_setf(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED, "Sleep verb not supported");
1823         }
1824
1825         r = verify_shutdown_creds(m, message, w, interactive, action, action_multiple_sessions,
1826                                   action_ignore_inhibit, error);
1827         log_debug_elogind("verify_shutdown_creds() returned %d", r);
1828         if (r != 0)
1829                 return r;
1830
1831         r = bus_manager_shutdown_or_sleep_now_or_later(m, unit_name, w, error);
1832         if (r < 0)
1833                 return r;
1834
1835         return sd_bus_reply_method_return(message, NULL);
1836 }
1837
1838 static int method_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1839         Manager *m = userdata;
1840
1841         return method_do_shutdown_or_sleep(
1842                         m, message,
1843                         SPECIAL_POWEROFF_TARGET,
1844                         INHIBIT_SHUTDOWN,
1845                         "org.freedesktop.login1.power-off",
1846                         "org.freedesktop.login1.power-off-multiple-sessions",
1847                         "org.freedesktop.login1.power-off-ignore-inhibit",
1848                         NULL,
1849                         error);
1850 }
1851
1852 static int method_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1853         Manager *m = userdata;
1854
1855         return method_do_shutdown_or_sleep(
1856                         m, message,
1857                         SPECIAL_REBOOT_TARGET,
1858                         INHIBIT_SHUTDOWN,
1859                         "org.freedesktop.login1.reboot",
1860                         "org.freedesktop.login1.reboot-multiple-sessions",
1861                         "org.freedesktop.login1.reboot-ignore-inhibit",
1862                         NULL,
1863                         error);
1864 }
1865
1866 static int method_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1867         Manager *m = userdata;
1868
1869         return method_do_shutdown_or_sleep(
1870                         m, message,
1871                         SPECIAL_HALT_TARGET,
1872                         INHIBIT_SHUTDOWN,
1873                         "org.freedesktop.login1.halt",
1874                         "org.freedesktop.login1.halt-multiple-sessions",
1875                         "org.freedesktop.login1.halt-ignore-inhibit",
1876                         NULL,
1877                         error);
1878 }
1879
1880 static int method_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1881         Manager *m = userdata;
1882
1883         return method_do_shutdown_or_sleep(
1884                         m, message,
1885                         SPECIAL_SUSPEND_TARGET,
1886                         INHIBIT_SLEEP,
1887                         "org.freedesktop.login1.suspend",
1888                         "org.freedesktop.login1.suspend-multiple-sessions",
1889                         "org.freedesktop.login1.suspend-ignore-inhibit",
1890                         "suspend",
1891                         error);
1892 }
1893
1894 static int method_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1895         Manager *m = userdata;
1896
1897         return method_do_shutdown_or_sleep(
1898                         m, message,
1899                         SPECIAL_HIBERNATE_TARGET,
1900                         INHIBIT_SLEEP,
1901                         "org.freedesktop.login1.hibernate",
1902                         "org.freedesktop.login1.hibernate-multiple-sessions",
1903                         "org.freedesktop.login1.hibernate-ignore-inhibit",
1904                         "hibernate",
1905                         error);
1906 }
1907
1908 static int method_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1909         Manager *m = userdata;
1910
1911         return method_do_shutdown_or_sleep(
1912                         m, message,
1913                         SPECIAL_HYBRID_SLEEP_TARGET,
1914                         INHIBIT_SLEEP,
1915                         "org.freedesktop.login1.hibernate",
1916                         "org.freedesktop.login1.hibernate-multiple-sessions",
1917                         "org.freedesktop.login1.hibernate-ignore-inhibit",
1918                         "hybrid-sleep",
1919                         error);
1920 }
1921 #endif // 0
1922
1923 static int nologin_timeout_handler(
1924                         sd_event_source *s,
1925                         uint64_t usec,
1926                         void *userdata) {
1927
1928         Manager *m = userdata;
1929         int r;
1930
1931         log_info("Creating /run/nologin, blocking further logins...");
1932
1933         r = write_string_file_atomic_label("/run/nologin", "System is going down.");
1934         if (r < 0)
1935                 log_error_errno(r, "Failed to create /run/nologin: %m");
1936         else
1937                 m->unlink_nologin = true;
1938
1939         return 0;
1940 }
1941
1942 static int update_schedule_file(Manager *m) {
1943         _cleanup_free_ char *temp_path = NULL;
1944         _cleanup_fclose_ FILE *f = NULL;
1945         int r;
1946
1947         assert(m);
1948
1949         r = mkdir_safe_label("/run/systemd/shutdown", 0755, 0, 0);
1950         if (r < 0)
1951                 return log_error_errno(r, "Failed to create shutdown subdirectory: %m");
1952
1953         r = fopen_temporary("/run/systemd/shutdown/scheduled", &f, &temp_path);
1954         if (r < 0)
1955                 return log_error_errno(r, "Failed to save information about scheduled shutdowns: %m");
1956
1957         (void) fchmod(fileno(f), 0644);
1958
1959         fprintf(f,
1960                 "USEC="USEC_FMT"\n"
1961                 "WARN_WALL=%i\n"
1962                 "MODE=%s\n",
1963                 m->scheduled_shutdown_timeout,
1964                 m->enable_wall_messages,
1965                 m->scheduled_shutdown_type);
1966
1967         if (!isempty(m->wall_message)) {
1968                 _cleanup_free_ char *t;
1969
1970                 t = cescape(m->wall_message);
1971                 if (!t) {
1972                         r = -ENOMEM;
1973                         goto fail;
1974                 }
1975
1976                 fprintf(f, "WALL_MESSAGE=%s\n", t);
1977         }
1978
1979         r = fflush_and_check(f);
1980         if (r < 0)
1981                 goto fail;
1982
1983         if (rename(temp_path, "/run/systemd/shutdown/scheduled") < 0) {
1984                 r = -errno;
1985                 goto fail;
1986         }
1987
1988         return 0;
1989
1990 fail:
1991         (void) unlink(temp_path);
1992         (void) unlink("/run/systemd/shutdown/scheduled");
1993
1994         return log_error_errno(r, "Failed to write information about scheduled shutdowns: %m");
1995 }
1996
1997 static void reset_scheduled_shutdown(Manager *m) {
1998         assert(m);
1999
2000         m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2001         m->wall_message_timeout_source = sd_event_source_unref(m->wall_message_timeout_source);
2002         m->nologin_timeout_source = sd_event_source_unref(m->nologin_timeout_source);
2003
2004         m->scheduled_shutdown_type = mfree(m->scheduled_shutdown_type);
2005         m->scheduled_shutdown_timeout = 0;
2006         m->shutdown_dry_run = false;
2007
2008         if (m->unlink_nologin) {
2009                 (void) unlink("/run/nologin");
2010                 m->unlink_nologin = false;
2011         }
2012
2013         (void) unlink("/run/systemd/shutdown/scheduled");
2014 }
2015
2016 #if 0 /// elogind has its own variant in elogind-dbus.c
2017 static int manager_scheduled_shutdown_handler(
2018                         sd_event_source *s,
2019                         uint64_t usec,
2020                         void *userdata) {
2021
2022         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
2023         Manager *m = userdata;
2024         const char *target;
2025         int r;
2026
2027         assert(m);
2028
2029         if (isempty(m->scheduled_shutdown_type))
2030                 return 0;
2031
2032         if (streq(m->scheduled_shutdown_type, "poweroff"))
2033                 target = SPECIAL_POWEROFF_TARGET;
2034         else if (streq(m->scheduled_shutdown_type, "reboot"))
2035                 target = SPECIAL_REBOOT_TARGET;
2036         else if (streq(m->scheduled_shutdown_type, "halt"))
2037                 target = SPECIAL_HALT_TARGET;
2038         else
2039                 assert_not_reached("unexpected shutdown type");
2040
2041         /* Don't allow multiple jobs being executed at the same time */
2042         if (m->action_what) {
2043                 r = -EALREADY;
2044                 log_error("Scheduled shutdown to %s failed: shutdown or sleep operation already in progress", target);
2045                 goto error;
2046         }
2047
2048         if (m->shutdown_dry_run) {
2049                 /* We do not process delay inhibitors here.  Otherwise, we
2050                  * would have to be considered "in progress" (like the check
2051                  * above) for some seconds after our admin has seen the final
2052                  * wall message. */
2053
2054                 bus_manager_log_shutdown(m, target);
2055                 log_info("Running in dry run, suppressing action.");
2056                 reset_scheduled_shutdown(m);
2057
2058                 return 0;
2059         }
2060
2061         r = bus_manager_shutdown_or_sleep_now_or_later(m, target, INHIBIT_SHUTDOWN, &error);
2062         if (r < 0) {
2063                 log_error_errno(r, "Scheduled shutdown to %s failed: %m", target);
2064                 goto error;
2065         }
2066
2067         return 0;
2068
2069 error:
2070         reset_scheduled_shutdown(m);
2071         return r;
2072 }
2073 #endif // 0
2074
2075 static int method_schedule_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2076         Manager *m = userdata;
2077         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2078         const char *action_multiple_sessions = NULL;
2079         const char *action_ignore_inhibit = NULL;
2080         const char *action = NULL;
2081         uint64_t elapse;
2082         char *type;
2083         int r;
2084         bool dry_run = false;
2085
2086         assert(m);
2087         assert(message);
2088
2089         log_debug_elogind("%s called", __FUNCTION__);
2090         r = sd_bus_message_read(message, "st", &type, &elapse);
2091         if (r < 0)
2092                 return r;
2093
2094         if (startswith(type, "dry-")) {
2095                 type += 4;
2096                 dry_run = true;
2097         }
2098
2099         if (streq(type, "poweroff")) {
2100                 action = "org.freedesktop.login1.power-off";
2101                 action_multiple_sessions = "org.freedesktop.login1.power-off-multiple-sessions";
2102                 action_ignore_inhibit = "org.freedesktop.login1.power-off-ignore-inhibit";
2103         } else if (streq(type, "reboot")) {
2104                 action = "org.freedesktop.login1.reboot";
2105                 action_multiple_sessions = "org.freedesktop.login1.reboot-multiple-sessions";
2106                 action_ignore_inhibit = "org.freedesktop.login1.reboot-ignore-inhibit";
2107         } else if (streq(type, "halt")) {
2108                 action = "org.freedesktop.login1.halt";
2109                 action_multiple_sessions = "org.freedesktop.login1.halt-multiple-sessions";
2110                 action_ignore_inhibit = "org.freedesktop.login1.halt-ignore-inhibit";
2111         } else
2112                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unsupported shutdown type");
2113
2114         r = verify_shutdown_creds(m, message, INHIBIT_SHUTDOWN, false,
2115                                   action, action_multiple_sessions, action_ignore_inhibit, error);
2116         if (r != 0)
2117                 return r;
2118
2119         if (m->scheduled_shutdown_timeout_source) {
2120                 r = sd_event_source_set_time(m->scheduled_shutdown_timeout_source, elapse);
2121                 if (r < 0)
2122                         return log_error_errno(r, "sd_event_source_set_time() failed: %m");
2123
2124                 r = sd_event_source_set_enabled(m->scheduled_shutdown_timeout_source, SD_EVENT_ONESHOT);
2125                 if (r < 0)
2126                         return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
2127         } else {
2128                 r = sd_event_add_time(m->event, &m->scheduled_shutdown_timeout_source,
2129                                       CLOCK_REALTIME, elapse, 0, manager_scheduled_shutdown_handler, m);
2130                 if (r < 0)
2131                         return log_error_errno(r, "sd_event_add_time() failed: %m");
2132         }
2133
2134         r = free_and_strdup(&m->scheduled_shutdown_type, type);
2135         if (r < 0) {
2136                 m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2137                 return log_oom();
2138         }
2139
2140         m->shutdown_dry_run = dry_run;
2141
2142         if (m->nologin_timeout_source) {
2143                 r = sd_event_source_set_time(m->nologin_timeout_source, elapse);
2144                 if (r < 0)
2145                         return log_error_errno(r, "sd_event_source_set_time() failed: %m");
2146
2147                 r = sd_event_source_set_enabled(m->nologin_timeout_source, SD_EVENT_ONESHOT);
2148                 if (r < 0)
2149                         return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
2150         } else {
2151                 r = sd_event_add_time(m->event, &m->nologin_timeout_source,
2152                                       CLOCK_REALTIME, elapse - 5 * USEC_PER_MINUTE, 0, nologin_timeout_handler, m);
2153                 if (r < 0)
2154                         return log_error_errno(r, "sd_event_add_time() failed: %m");
2155         }
2156
2157         m->scheduled_shutdown_timeout = elapse;
2158
2159         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
2160         if (r >= 0) {
2161                 const char *tty = NULL;
2162
2163                 (void) sd_bus_creds_get_uid(creds, &m->scheduled_shutdown_uid);
2164                 (void) sd_bus_creds_get_tty(creds, &tty);
2165
2166                 r = free_and_strdup(&m->scheduled_shutdown_tty, tty);
2167                 if (r < 0) {
2168                         m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2169                         return log_oom();
2170                 }
2171         }
2172
2173         r = manager_setup_wall_message_timer(m);
2174         if (r < 0)
2175                 return r;
2176
2177         r = update_schedule_file(m);
2178         if (r < 0)
2179                 return r;
2180
2181         return sd_bus_reply_method_return(message, NULL);
2182 }
2183
2184 static int method_cancel_scheduled_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2185         Manager *m = userdata;
2186         bool cancelled;
2187 #if 1 /// elogind needs to construct the message to allow extra wall messages
2188         _cleanup_free_ char *l = NULL;
2189 #endif // 1
2190
2191         assert(m);
2192         assert(message);
2193
2194         log_debug_elogind("%s called", __FUNCTION__);
2195         cancelled = m->scheduled_shutdown_type != NULL;
2196         reset_scheduled_shutdown(m);
2197
2198         if (cancelled) {
2199                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2200                 const char *tty = NULL;
2201                 uid_t uid = 0;
2202                 int r;
2203
2204                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
2205                 if (r >= 0) {
2206                         (void) sd_bus_creds_get_uid(creds, &uid);
2207                         (void) sd_bus_creds_get_tty(creds, &tty);
2208                 }
2209
2210 #if 0 /// elogind wants to allow extra cancellation messages
2211                 utmp_wall("The system shutdown has been cancelled",
2212                           uid_to_name(uid), tty, logind_wall_tty_filter, m);
2213 #else
2214                 r = asprintf(&l, "%s%sThe system shutdown has been cancelled!",
2215                              strempty(m->wall_message),
2216                              isempty(m->wall_message) ? "" : "\n");
2217                 if (r < 0) {
2218                         log_oom();
2219                         return 0;
2220                 }
2221
2222                 utmp_wall(l, uid_to_name(uid), tty, logind_wall_tty_filter, m);
2223 #endif // 0
2224         }
2225
2226         return sd_bus_reply_method_return(message, "b", cancelled);
2227 }
2228
2229 static int method_can_shutdown_or_sleep(
2230                 Manager *m,
2231                 sd_bus_message *message,
2232                 InhibitWhat w,
2233                 const char *action,
2234                 const char *action_multiple_sessions,
2235                 const char *action_ignore_inhibit,
2236                 const char *sleep_verb,
2237                 sd_bus_error *error) {
2238
2239         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2240         bool multiple_sessions, challenge, blocked;
2241         const char *result = NULL;
2242         uid_t uid;
2243         int r;
2244
2245         assert(m);
2246         assert(message);
2247         assert(w >= 0);
2248         assert(w <= _INHIBIT_WHAT_MAX);
2249         assert(action);
2250         assert(action_multiple_sessions);
2251         assert(action_ignore_inhibit);
2252
2253         if (sleep_verb) {
2254 #if 0 /// elogind needs to have the manager being passed
2255                 r = can_sleep(sleep_verb);
2256 #else
2257                 r = can_sleep(m, sleep_verb);
2258 #endif // 0
2259                 if (r < 0)
2260                         return r;
2261                 if (r == 0)
2262                         return sd_bus_reply_method_return(message, "s", "na");
2263         }
2264
2265         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
2266         if (r < 0)
2267                 return r;
2268
2269         r = sd_bus_creds_get_euid(creds, &uid);
2270         if (r < 0)
2271                 return r;
2272
2273         r = have_multiple_sessions(m, uid);
2274         if (r < 0)
2275                 return r;
2276
2277         multiple_sessions = r > 0;
2278         blocked = manager_is_inhibited(m, w, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
2279
2280         if (multiple_sessions) {
2281                 r = bus_test_polkit(message, CAP_SYS_BOOT, action_multiple_sessions, NULL, UID_INVALID, &challenge, error);
2282                 if (r < 0)
2283                         return r;
2284
2285                 if (r > 0)
2286                         result = "yes";
2287                 else if (challenge)
2288                         result = "challenge";
2289                 else
2290                         result = "no";
2291         }
2292
2293         if (blocked) {
2294                 r = bus_test_polkit(message, CAP_SYS_BOOT, action_ignore_inhibit, NULL, UID_INVALID, &challenge, error);
2295                 if (r < 0)
2296                         return r;
2297
2298                 if (r > 0 && !result)
2299                         result = "yes";
2300                 else if (challenge && (!result || streq(result, "yes")))
2301                         result = "challenge";
2302                 else
2303                         result = "no";
2304         }
2305
2306         if (!multiple_sessions && !blocked) {
2307                 /* If neither inhibit nor multiple sessions
2308                  * apply then just check the normal policy */
2309
2310                 r = bus_test_polkit(message, CAP_SYS_BOOT, action, NULL, UID_INVALID, &challenge, error);
2311                 if (r < 0)
2312                         return r;
2313
2314                 if (r > 0)
2315                         result = "yes";
2316                 else if (challenge)
2317                         result = "challenge";
2318                 else
2319                         result = "no";
2320         }
2321
2322         return sd_bus_reply_method_return(message, "s", result);
2323 }
2324
2325 static int method_can_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2326         Manager *m = userdata;
2327
2328         return method_can_shutdown_or_sleep(
2329                         m, message,
2330                         INHIBIT_SHUTDOWN,
2331                         "org.freedesktop.login1.power-off",
2332                         "org.freedesktop.login1.power-off-multiple-sessions",
2333                         "org.freedesktop.login1.power-off-ignore-inhibit",
2334                         NULL,
2335                         error);
2336 }
2337
2338 static int method_can_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2339         Manager *m = userdata;
2340
2341         return method_can_shutdown_or_sleep(
2342                         m, message,
2343                         INHIBIT_SHUTDOWN,
2344                         "org.freedesktop.login1.reboot",
2345                         "org.freedesktop.login1.reboot-multiple-sessions",
2346                         "org.freedesktop.login1.reboot-ignore-inhibit",
2347                         NULL,
2348                         error);
2349 }
2350
2351 static int method_can_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2352         Manager *m = userdata;
2353
2354         return method_can_shutdown_or_sleep(
2355                         m, message,
2356                         INHIBIT_SHUTDOWN,
2357                         "org.freedesktop.login1.halt",
2358                         "org.freedesktop.login1.halt-multiple-sessions",
2359                         "org.freedesktop.login1.halt-ignore-inhibit",
2360                         NULL,
2361                         error);
2362 }
2363
2364 static int method_can_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2365         Manager *m = userdata;
2366
2367         return method_can_shutdown_or_sleep(
2368                         m, message,
2369                         INHIBIT_SLEEP,
2370                         "org.freedesktop.login1.suspend",
2371                         "org.freedesktop.login1.suspend-multiple-sessions",
2372                         "org.freedesktop.login1.suspend-ignore-inhibit",
2373                         "suspend",
2374                         error);
2375 }
2376
2377 static int method_can_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2378         Manager *m = userdata;
2379
2380         return method_can_shutdown_or_sleep(
2381                         m, message,
2382                         INHIBIT_SLEEP,
2383                         "org.freedesktop.login1.hibernate",
2384                         "org.freedesktop.login1.hibernate-multiple-sessions",
2385                         "org.freedesktop.login1.hibernate-ignore-inhibit",
2386                         "hibernate",
2387                         error);
2388 }
2389
2390 static int method_can_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2391         Manager *m = userdata;
2392
2393         return method_can_shutdown_or_sleep(
2394                         m, message,
2395                         INHIBIT_SLEEP,
2396                         "org.freedesktop.login1.hibernate",
2397                         "org.freedesktop.login1.hibernate-multiple-sessions",
2398                         "org.freedesktop.login1.hibernate-ignore-inhibit",
2399                         "hybrid-sleep",
2400                         error);
2401 }
2402
2403 static int property_get_reboot_to_firmware_setup(
2404                 sd_bus *bus,
2405                 const char *path,
2406                 const char *interface,
2407                 const char *property,
2408                 sd_bus_message *reply,
2409                 void *userdata,
2410                 sd_bus_error *error) {
2411 #if 0 /// elogind does not support EFI
2412         int r;
2413
2414         assert(bus);
2415         assert(reply);
2416         assert(userdata);
2417
2418         r = efi_get_reboot_to_firmware();
2419         if (r < 0 && r != -EOPNOTSUPP)
2420                 return r;
2421
2422         return sd_bus_message_append(reply, "b", r > 0);
2423 #else
2424         return sd_bus_message_append(reply, "b", false);
2425 #endif // 0
2426 }
2427
2428 static int method_set_reboot_to_firmware_setup(
2429                 sd_bus_message *message,
2430                 void *userdata,
2431                 sd_bus_error *error) {
2432
2433         int b, r;
2434         Manager *m = userdata;
2435
2436         assert(message);
2437         assert(m);
2438
2439         r = sd_bus_message_read(message, "b", &b);
2440         if (r < 0)
2441                 return r;
2442
2443         r = bus_verify_polkit_async(message,
2444                                     CAP_SYS_ADMIN,
2445                                     "org.freedesktop.login1.set-reboot-to-firmware-setup",
2446                                     NULL,
2447                                     false,
2448                                     UID_INVALID,
2449                                     &m->polkit_registry,
2450                                     error);
2451         if (r < 0)
2452                 return r;
2453         if (r == 0)
2454                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2455
2456 #if 0 /// elogind does not support EFI
2457         r = efi_set_reboot_to_firmware(b);
2458         if (r < 0)
2459                 return r;
2460 #endif // 0
2461
2462         return sd_bus_reply_method_return(message, NULL);
2463 }
2464
2465 static int method_can_reboot_to_firmware_setup(
2466                 sd_bus_message *message,
2467                 void *userdata,
2468                 sd_bus_error *error) {
2469
2470 #if 0 /// elogind does not support EFI
2471         int r;
2472         bool challenge;
2473         const char *result;
2474         Manager *m = userdata;
2475
2476         assert(message);
2477         assert(m);
2478
2479         r = efi_reboot_to_firmware_supported();
2480         if (r == -EOPNOTSUPP)
2481                 return sd_bus_reply_method_return(message, "s", "na");
2482         else if (r < 0)
2483                 return r;
2484
2485         r = bus_test_polkit(message,
2486                             CAP_SYS_ADMIN,
2487                             "org.freedesktop.login1.set-reboot-to-firmware-setup",
2488                             NULL,
2489                             UID_INVALID,
2490                             &challenge,
2491                             error);
2492         if (r < 0)
2493                 return r;
2494
2495         if (r > 0)
2496                 result = "yes";
2497         else if (challenge)
2498                 result = "challenge";
2499         else
2500                 result = "no";
2501
2502         return sd_bus_reply_method_return(message, "s", result);
2503 #else
2504         return sd_bus_reply_method_return(message, "s", "no");
2505 #endif // 0
2506 }
2507
2508 static int method_set_wall_message(
2509                 sd_bus_message *message,
2510                 void *userdata,
2511                 sd_bus_error *error) {
2512
2513         int r;
2514         Manager *m = userdata;
2515         char *wall_message;
2516         int enable_wall_messages;
2517
2518         assert(message);
2519         assert(m);
2520
2521         r = sd_bus_message_read(message, "sb", &wall_message, &enable_wall_messages);
2522         if (r < 0)
2523                 return r;
2524
2525 #if 0 /// elogind only calls this for shutdown/reboot, which already needs authorization.
2526         r = bus_verify_polkit_async(message,
2527                                     CAP_SYS_ADMIN,
2528                                     "org.freedesktop.login1.set-wall-message",
2529                                     NULL,
2530                                     false,
2531                                     UID_INVALID,
2532                                     &m->polkit_registry,
2533                                     error);
2534         if (r < 0)
2535                 return r;
2536         if (r == 0)
2537                 return 1; /* Will call us back */
2538 #endif // 0
2539
2540         r = free_and_strdup(&m->wall_message, empty_to_null(wall_message));
2541         if (r < 0)
2542                 return log_oom();
2543
2544         m->enable_wall_messages = enable_wall_messages;
2545
2546         return sd_bus_reply_method_return(message, NULL);
2547 }
2548
2549 static int method_inhibit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2550         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2551         const char *who, *why, *what, *mode;
2552         _cleanup_free_ char *id = NULL;
2553         _cleanup_close_ int fifo_fd = -1;
2554         Manager *m = userdata;
2555         Inhibitor *i = NULL;
2556         InhibitMode mm;
2557         InhibitWhat w;
2558         pid_t pid;
2559         uid_t uid;
2560         int r;
2561
2562         assert(message);
2563         assert(m);
2564
2565         r = sd_bus_message_read(message, "ssss", &what, &who, &why, &mode);
2566         if (r < 0)
2567                 return r;
2568
2569         w = inhibit_what_from_string(what);
2570         if (w <= 0)
2571                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid what specification %s", what);
2572
2573         mm = inhibit_mode_from_string(mode);
2574         if (mm < 0)
2575                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid mode specification %s", mode);
2576
2577         /* Delay is only supported for shutdown/sleep */
2578         if (mm == INHIBIT_DELAY && (w & ~(INHIBIT_SHUTDOWN|INHIBIT_SLEEP)))
2579                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Delay inhibitors only supported for shutdown and sleep");
2580
2581         /* Don't allow taking delay locks while we are already
2582          * executing the operation. We shouldn't create the impression
2583          * that the lock was successful if the machine is about to go
2584          * down/suspend any moment. */
2585         if (m->action_what & w)
2586                 return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS, "The operation inhibition has been requested for is already running");
2587
2588         r = bus_verify_polkit_async(
2589                         message,
2590                         CAP_SYS_BOOT,
2591                         w == INHIBIT_SHUTDOWN             ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-shutdown" : "org.freedesktop.login1.inhibit-delay-shutdown") :
2592                         w == INHIBIT_SLEEP                ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-sleep"    : "org.freedesktop.login1.inhibit-delay-sleep") :
2593                         w == INHIBIT_IDLE                 ? "org.freedesktop.login1.inhibit-block-idle" :
2594                         w == INHIBIT_HANDLE_POWER_KEY     ? "org.freedesktop.login1.inhibit-handle-power-key" :
2595                         w == INHIBIT_HANDLE_SUSPEND_KEY   ? "org.freedesktop.login1.inhibit-handle-suspend-key" :
2596                         w == INHIBIT_HANDLE_HIBERNATE_KEY ? "org.freedesktop.login1.inhibit-handle-hibernate-key" :
2597                                                             "org.freedesktop.login1.inhibit-handle-lid-switch",
2598                         NULL,
2599                         false,
2600                         UID_INVALID,
2601                         &m->polkit_registry,
2602                         error);
2603         if (r < 0)
2604                 return r;
2605         if (r == 0)
2606                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2607
2608         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID|SD_BUS_CREDS_PID, &creds);
2609         if (r < 0)
2610                 return r;
2611
2612         r = sd_bus_creds_get_euid(creds, &uid);
2613         if (r < 0)
2614                 return r;
2615
2616         r = sd_bus_creds_get_pid(creds, &pid);
2617         if (r < 0)
2618                 return r;
2619
2620         if (hashmap_size(m->inhibitors) >= m->inhibitors_max)
2621                 return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED, "Maximum number of inhibitors (%" PRIu64 ") reached, refusing further inhibitors.", m->inhibitors_max);
2622
2623         do {
2624                 id = mfree(id);
2625
2626                 if (asprintf(&id, "%lu", ++m->inhibit_counter) < 0)
2627                         return -ENOMEM;
2628
2629         } while (hashmap_get(m->inhibitors, id));
2630
2631         r = manager_add_inhibitor(m, id, &i);
2632         if (r < 0)
2633                 return r;
2634
2635         i->what = w;
2636         i->mode = mm;
2637         i->pid = pid;
2638         i->uid = uid;
2639         i->why = strdup(why);
2640         i->who = strdup(who);
2641
2642         if (!i->why || !i->who) {
2643                 r = -ENOMEM;
2644                 goto fail;
2645         }
2646
2647         fifo_fd = inhibitor_create_fifo(i);
2648         if (fifo_fd < 0) {
2649                 r = fifo_fd;
2650                 goto fail;
2651         }
2652
2653         inhibitor_start(i);
2654
2655         return sd_bus_reply_method_return(message, "h", fifo_fd);
2656
2657 fail:
2658         if (i)
2659                 inhibitor_free(i);
2660
2661         return r;
2662 }
2663
2664 const sd_bus_vtable manager_vtable[] = {
2665         SD_BUS_VTABLE_START(0),
2666
2667         SD_BUS_WRITABLE_PROPERTY("EnableWallMessages", "b", NULL, NULL, offsetof(Manager, enable_wall_messages), 0),
2668         SD_BUS_WRITABLE_PROPERTY("WallMessage", "s", NULL, NULL, offsetof(Manager, wall_message), 0),
2669
2670 #if 0 /// UNNEEDED by elogind
2671         SD_BUS_PROPERTY("NAutoVTs", "u", NULL, offsetof(Manager, n_autovts), SD_BUS_VTABLE_PROPERTY_CONST),
2672 #endif // 0
2673         SD_BUS_PROPERTY("KillOnlyUsers", "as", NULL, offsetof(Manager, kill_only_users), SD_BUS_VTABLE_PROPERTY_CONST),
2674         SD_BUS_PROPERTY("KillExcludeUsers", "as", NULL, offsetof(Manager, kill_exclude_users), SD_BUS_VTABLE_PROPERTY_CONST),
2675         SD_BUS_PROPERTY("KillUserProcesses", "b", NULL, offsetof(Manager, kill_user_processes), SD_BUS_VTABLE_PROPERTY_CONST),
2676         SD_BUS_PROPERTY("RebootToFirmwareSetup", "b", property_get_reboot_to_firmware_setup, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2677         SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
2678         SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
2679         SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
2680         SD_BUS_PROPERTY("BlockInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
2681         SD_BUS_PROPERTY("DelayInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
2682         SD_BUS_PROPERTY("InhibitDelayMaxUSec", "t", NULL, offsetof(Manager, inhibit_delay_max), SD_BUS_VTABLE_PROPERTY_CONST),
2683         SD_BUS_PROPERTY("HandlePowerKey", "s", property_get_handle_action, offsetof(Manager, handle_power_key), SD_BUS_VTABLE_PROPERTY_CONST),
2684         SD_BUS_PROPERTY("HandleSuspendKey", "s", property_get_handle_action, offsetof(Manager, handle_suspend_key), SD_BUS_VTABLE_PROPERTY_CONST),
2685         SD_BUS_PROPERTY("HandleHibernateKey", "s", property_get_handle_action, offsetof(Manager, handle_hibernate_key), SD_BUS_VTABLE_PROPERTY_CONST),
2686         SD_BUS_PROPERTY("HandleLidSwitch", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch), SD_BUS_VTABLE_PROPERTY_CONST),
2687         SD_BUS_PROPERTY("HandleLidSwitchDocked", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch_docked), SD_BUS_VTABLE_PROPERTY_CONST),
2688         SD_BUS_PROPERTY("HoldoffTimeoutUSec", "t", NULL, offsetof(Manager, holdoff_timeout_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2689         SD_BUS_PROPERTY("IdleAction", "s", property_get_handle_action, offsetof(Manager, idle_action), SD_BUS_VTABLE_PROPERTY_CONST),
2690         SD_BUS_PROPERTY("IdleActionUSec", "t", NULL, offsetof(Manager, idle_action_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2691         SD_BUS_PROPERTY("PreparingForShutdown", "b", property_get_preparing, 0, 0),
2692         SD_BUS_PROPERTY("PreparingForSleep", "b", property_get_preparing, 0, 0),
2693         SD_BUS_PROPERTY("ScheduledShutdown", "(st)", property_get_scheduled_shutdown, 0, 0),
2694         SD_BUS_PROPERTY("Docked", "b", property_get_docked, 0, 0),
2695         SD_BUS_PROPERTY("RemoveIPC", "b", bus_property_get_bool, offsetof(Manager, remove_ipc), SD_BUS_VTABLE_PROPERTY_CONST),
2696         SD_BUS_PROPERTY("RuntimeDirectorySize", "t", bus_property_get_size, offsetof(Manager, runtime_dir_size), SD_BUS_VTABLE_PROPERTY_CONST),
2697         SD_BUS_PROPERTY("InhibitorsMax", "t", NULL, offsetof(Manager, inhibitors_max), SD_BUS_VTABLE_PROPERTY_CONST),
2698         SD_BUS_PROPERTY("NCurrentInhibitors", "t", property_get_current_inhibitors, 0, 0),
2699         SD_BUS_PROPERTY("SessionsMax", "t", NULL, offsetof(Manager, sessions_max), SD_BUS_VTABLE_PROPERTY_CONST),
2700         SD_BUS_PROPERTY("NCurrentSessions", "t", property_get_current_sessions, 0, 0),
2701         SD_BUS_PROPERTY("UserTasksMax", "t", NULL, offsetof(Manager, user_tasks_max), SD_BUS_VTABLE_PROPERTY_CONST),
2702
2703         SD_BUS_METHOD("GetSession", "s", "o", method_get_session, SD_BUS_VTABLE_UNPRIVILEGED),
2704         SD_BUS_METHOD("GetSessionByPID", "u", "o", method_get_session_by_pid, SD_BUS_VTABLE_UNPRIVILEGED),
2705         SD_BUS_METHOD("GetUser", "u", "o", method_get_user, SD_BUS_VTABLE_UNPRIVILEGED),
2706         SD_BUS_METHOD("GetUserByPID", "u", "o", method_get_user_by_pid, SD_BUS_VTABLE_UNPRIVILEGED),
2707         SD_BUS_METHOD("GetSeat", "s", "o", method_get_seat, SD_BUS_VTABLE_UNPRIVILEGED),
2708         SD_BUS_METHOD("ListSessions", NULL, "a(susso)", method_list_sessions, SD_BUS_VTABLE_UNPRIVILEGED),
2709         SD_BUS_METHOD("ListUsers", NULL, "a(uso)", method_list_users, SD_BUS_VTABLE_UNPRIVILEGED),
2710         SD_BUS_METHOD("ListSeats", NULL, "a(so)", method_list_seats, SD_BUS_VTABLE_UNPRIVILEGED),
2711         SD_BUS_METHOD("ListInhibitors", NULL, "a(ssssuu)", method_list_inhibitors, SD_BUS_VTABLE_UNPRIVILEGED),
2712         SD_BUS_METHOD("CreateSession", "uusssssussbssa(sv)", "soshusub", method_create_session, 0),
2713         SD_BUS_METHOD("ReleaseSession", "s", NULL, method_release_session, 0),
2714         SD_BUS_METHOD("ActivateSession", "s", NULL, method_activate_session, SD_BUS_VTABLE_UNPRIVILEGED),
2715         SD_BUS_METHOD("ActivateSessionOnSeat", "ss", NULL, method_activate_session_on_seat, SD_BUS_VTABLE_UNPRIVILEGED),
2716         SD_BUS_METHOD("LockSession", "s", NULL, method_lock_session, SD_BUS_VTABLE_UNPRIVILEGED),
2717         SD_BUS_METHOD("UnlockSession", "s", NULL, method_lock_session, SD_BUS_VTABLE_UNPRIVILEGED),
2718         SD_BUS_METHOD("LockSessions", NULL, NULL, method_lock_sessions, SD_BUS_VTABLE_UNPRIVILEGED),
2719         SD_BUS_METHOD("UnlockSessions", NULL, NULL, method_lock_sessions, SD_BUS_VTABLE_UNPRIVILEGED),
2720         SD_BUS_METHOD("KillSession", "ssi", NULL, method_kill_session, SD_BUS_VTABLE_UNPRIVILEGED),
2721         SD_BUS_METHOD("KillUser", "ui", NULL, method_kill_user, SD_BUS_VTABLE_UNPRIVILEGED),
2722         SD_BUS_METHOD("TerminateSession", "s", NULL, method_terminate_session, SD_BUS_VTABLE_UNPRIVILEGED),
2723         SD_BUS_METHOD("TerminateUser", "u", NULL, method_terminate_user, SD_BUS_VTABLE_UNPRIVILEGED),
2724         SD_BUS_METHOD("TerminateSeat", "s", NULL, method_terminate_seat, SD_BUS_VTABLE_UNPRIVILEGED),
2725         SD_BUS_METHOD("SetUserLinger", "ubb", NULL, method_set_user_linger, SD_BUS_VTABLE_UNPRIVILEGED),
2726         SD_BUS_METHOD("AttachDevice", "ssb", NULL, method_attach_device, SD_BUS_VTABLE_UNPRIVILEGED),
2727         SD_BUS_METHOD("FlushDevices", "b", NULL, method_flush_devices, SD_BUS_VTABLE_UNPRIVILEGED),
2728         SD_BUS_METHOD("PowerOff", "b", NULL, method_poweroff, SD_BUS_VTABLE_UNPRIVILEGED),
2729         SD_BUS_METHOD("Reboot", "b", NULL, method_reboot, SD_BUS_VTABLE_UNPRIVILEGED),
2730         SD_BUS_METHOD("Halt", "b", NULL, method_halt, SD_BUS_VTABLE_UNPRIVILEGED),
2731         SD_BUS_METHOD("Suspend", "b", NULL, method_suspend, SD_BUS_VTABLE_UNPRIVILEGED),
2732         SD_BUS_METHOD("Hibernate", "b", NULL, method_hibernate, SD_BUS_VTABLE_UNPRIVILEGED),
2733         SD_BUS_METHOD("HybridSleep", "b", NULL, method_hybrid_sleep, SD_BUS_VTABLE_UNPRIVILEGED),
2734         SD_BUS_METHOD("CanPowerOff", NULL, "s", method_can_poweroff, SD_BUS_VTABLE_UNPRIVILEGED),
2735         SD_BUS_METHOD("CanReboot", NULL, "s", method_can_reboot, SD_BUS_VTABLE_UNPRIVILEGED),
2736         SD_BUS_METHOD("CanHalt", NULL, "s", method_can_halt, SD_BUS_VTABLE_UNPRIVILEGED),
2737         SD_BUS_METHOD("CanSuspend", NULL, "s", method_can_suspend, SD_BUS_VTABLE_UNPRIVILEGED),
2738         SD_BUS_METHOD("CanHibernate", NULL, "s", method_can_hibernate, SD_BUS_VTABLE_UNPRIVILEGED),
2739         SD_BUS_METHOD("CanHybridSleep", NULL, "s", method_can_hybrid_sleep, SD_BUS_VTABLE_UNPRIVILEGED),
2740         SD_BUS_METHOD("ScheduleShutdown", "st", NULL, method_schedule_shutdown, SD_BUS_VTABLE_UNPRIVILEGED),
2741         SD_BUS_METHOD("CancelScheduledShutdown", NULL, "b", method_cancel_scheduled_shutdown, SD_BUS_VTABLE_UNPRIVILEGED),
2742         SD_BUS_METHOD("Inhibit", "ssss", "h", method_inhibit, SD_BUS_VTABLE_UNPRIVILEGED),
2743         SD_BUS_METHOD("CanRebootToFirmwareSetup", NULL, "s", method_can_reboot_to_firmware_setup, SD_BUS_VTABLE_UNPRIVILEGED),
2744         SD_BUS_METHOD("SetRebootToFirmwareSetup", "b", NULL, method_set_reboot_to_firmware_setup, SD_BUS_VTABLE_UNPRIVILEGED),
2745         SD_BUS_METHOD("SetWallMessage", "sb", NULL, method_set_wall_message, SD_BUS_VTABLE_UNPRIVILEGED),
2746
2747         SD_BUS_SIGNAL("SessionNew", "so", 0),
2748         SD_BUS_SIGNAL("SessionRemoved", "so", 0),
2749         SD_BUS_SIGNAL("UserNew", "uo", 0),
2750         SD_BUS_SIGNAL("UserRemoved", "uo", 0),
2751         SD_BUS_SIGNAL("SeatNew", "so", 0),
2752         SD_BUS_SIGNAL("SeatRemoved", "so", 0),
2753         SD_BUS_SIGNAL("PrepareForShutdown", "b", 0),
2754         SD_BUS_SIGNAL("PrepareForSleep", "b", 0),
2755
2756         SD_BUS_VTABLE_END
2757 };
2758
2759 #if 0 /// UNNEEDED by elogind
2760 static int session_jobs_reply(Session *s, const char *unit, const char *result) {
2761         int r = 0;
2762
2763         assert(s);
2764         assert(unit);
2765
2766         if (!s->started)
2767                 return r;
2768
2769         if (streq(result, "done"))
2770                 r = session_send_create_reply(s, NULL);
2771         else {
2772                 _cleanup_(sd_bus_error_free) sd_bus_error e = SD_BUS_ERROR_NULL;
2773
2774                 sd_bus_error_setf(&e, BUS_ERROR_JOB_FAILED, "Start job for unit %s failed with '%s'", unit, result);
2775                 r = session_send_create_reply(s, &e);
2776         }
2777
2778         return r;
2779 }
2780
2781 int match_job_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2782         const char *path, *result, *unit;
2783         Manager *m = userdata;
2784         Session *session;
2785         uint32_t id;
2786         User *user;
2787         int r;
2788
2789         assert(message);
2790         assert(m);
2791
2792         r = sd_bus_message_read(message, "uoss", &id, &path, &unit, &result);
2793         if (r < 0) {
2794                 bus_log_parse_error(r);
2795                 return 0;
2796         }
2797
2798         if (m->action_job && streq(m->action_job, path)) {
2799                 log_info("Operation '%s' finished.", inhibit_what_to_string(m->action_what));
2800
2801                 /* Tell people that they now may take a lock again */
2802                 send_prepare_for(m, m->action_what, false);
2803
2804                 m->action_job = mfree(m->action_job);
2805                 m->action_unit = NULL;
2806                 m->action_what = 0;
2807                 return 0;
2808         }
2809
2810         session = hashmap_get(m->session_units, unit);
2811         if (session && streq_ptr(path, session->scope_job)) {
2812                 session->scope_job = mfree(session->scope_job);
2813                 session_jobs_reply(session, unit, result);
2814
2815                 session_save(session);
2816                 user_save(session->user);
2817                 session_add_to_gc_queue(session);
2818         }
2819
2820         user = hashmap_get(m->user_units, unit);
2821         if (user &&
2822             (streq_ptr(path, user->service_job) ||
2823              streq_ptr(path, user->slice_job))) {
2824
2825                 if (streq_ptr(path, user->service_job))
2826                         user->service_job = mfree(user->service_job);
2827
2828                 if (streq_ptr(path, user->slice_job))
2829                         user->slice_job = mfree(user->slice_job);
2830
2831                 LIST_FOREACH(sessions_by_user, session, user->sessions)
2832                         session_jobs_reply(session, unit, result);
2833
2834                 user_save(user);
2835                 user_add_to_gc_queue(user);
2836         }
2837
2838         return 0;
2839 }
2840
2841 int match_unit_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2842         const char *path, *unit;
2843         Manager *m = userdata;
2844         Session *session;
2845         User *user;
2846         int r;
2847
2848         assert(message);
2849         assert(m);
2850
2851         r = sd_bus_message_read(message, "so", &unit, &path);
2852         if (r < 0) {
2853                 bus_log_parse_error(r);
2854                 return 0;
2855         }
2856
2857         session = hashmap_get(m->session_units, unit);
2858         if (session)
2859                 session_add_to_gc_queue(session);
2860
2861         user = hashmap_get(m->user_units, unit);
2862         if (user)
2863                 user_add_to_gc_queue(user);
2864
2865         return 0;
2866 }
2867
2868 int match_properties_changed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2869         _cleanup_free_ char *unit = NULL;
2870         Manager *m = userdata;
2871         const char *path;
2872         Session *session;
2873         User *user;
2874         int r;
2875
2876         assert(message);
2877         assert(m);
2878
2879         path = sd_bus_message_get_path(message);
2880         if (!path)
2881                 return 0;
2882
2883         r = unit_name_from_dbus_path(path, &unit);
2884         if (r == -EINVAL) /* not a unit */
2885                 return 0;
2886         if (r < 0) {
2887                 log_oom();
2888                 return 0;
2889         }
2890
2891         session = hashmap_get(m->session_units, unit);
2892         if (session)
2893                 session_add_to_gc_queue(session);
2894
2895         user = hashmap_get(m->user_units, unit);
2896         if (user)
2897                 user_add_to_gc_queue(user);
2898
2899         return 0;
2900 }
2901
2902 int match_reloading(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2903         Manager *m = userdata;
2904         Session *session;
2905         Iterator i;
2906         int b, r;
2907
2908         assert(message);
2909         assert(m);
2910
2911         r = sd_bus_message_read(message, "b", &b);
2912         if (r < 0) {
2913                 bus_log_parse_error(r);
2914                 return 0;
2915         }
2916
2917         if (b)
2918                 return 0;
2919
2920         /* systemd finished reloading, let's recheck all our sessions */
2921         log_debug("System manager has been reloaded, rechecking sessions...");
2922
2923         HASHMAP_FOREACH(session, m->sessions, i)
2924                 session_add_to_gc_queue(session);
2925
2926         return 0;
2927 }
2928 #endif // 0
2929
2930 int manager_send_changed(Manager *manager, const char *property, ...) {
2931         char **l;
2932
2933         assert(manager);
2934
2935         l = strv_from_stdarg_alloca(property);
2936
2937         return sd_bus_emit_properties_changed_strv(
2938                         manager->bus,
2939                         "/org/freedesktop/login1",
2940                         "org.freedesktop.login1.Manager",
2941                         l);
2942 }
2943
2944 #if 0 /// UNNEEDED by elogind
2945 static int strdup_job(sd_bus_message *reply, char **job) {
2946         const char *j;
2947         char *copy;
2948         int r;
2949
2950         r = sd_bus_message_read(reply, "o", &j);
2951         if (r < 0)
2952                 return r;
2953
2954         copy = strdup(j);
2955         if (!copy)
2956                 return -ENOMEM;
2957
2958         *job = copy;
2959         return 1;
2960 }
2961
2962 int manager_start_slice(
2963                 Manager *manager,
2964                 const char *slice,
2965                 const char *description,
2966                 const char *after,
2967                 const char *after2,
2968                 uint64_t tasks_max,
2969                 sd_bus_error *error,
2970                 char **job) {
2971
2972         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
2973         int r;
2974
2975         assert(manager);
2976         assert(slice);
2977         assert(job);
2978
2979         r = sd_bus_message_new_method_call(
2980                         manager->bus,
2981                         &m,
2982                         "org.freedesktop.systemd1",
2983                         "/org/freedesktop/systemd1",
2984                         "org.freedesktop.systemd1.Manager",
2985                         "StartTransientUnit");
2986         if (r < 0)
2987                 return r;
2988
2989         r = sd_bus_message_append(m, "ss", strempty(slice), "fail");
2990         if (r < 0)
2991                 return r;
2992
2993         r = sd_bus_message_open_container(m, 'a', "(sv)");
2994         if (r < 0)
2995                 return r;
2996
2997         if (!isempty(description)) {
2998                 r = sd_bus_message_append(m, "(sv)", "Description", "s", description);
2999                 if (r < 0)
3000                         return r;
3001         }
3002
3003         if (!isempty(after)) {
3004                 r = sd_bus_message_append(m, "(sv)", "After", "as", 1, after);
3005                 if (r < 0)
3006                         return r;
3007         }
3008
3009         if (!isempty(after2)) {
3010                 r = sd_bus_message_append(m, "(sv)", "After", "as", 1, after2);
3011                 if (r < 0)
3012                         return r;
3013         }
3014
3015         r = sd_bus_message_append(m, "(sv)", "TasksMax", "t", tasks_max);
3016         if (r < 0)
3017                 return r;
3018
3019         r = sd_bus_message_close_container(m);
3020         if (r < 0)
3021                 return r;
3022
3023         r = sd_bus_message_append(m, "a(sa(sv))", 0);
3024         if (r < 0)
3025                 return r;
3026
3027         r = sd_bus_call(manager->bus, m, 0, error, &reply);
3028         if (r < 0)
3029                 return r;
3030
3031         return strdup_job(reply, job);
3032 }
3033
3034 int manager_start_scope(
3035                 Manager *manager,
3036                 const char *scope,
3037                 pid_t pid,
3038                 const char *slice,
3039                 const char *description,
3040                 const char *after,
3041                 const char *after2,
3042                 uint64_t tasks_max,
3043                 sd_bus_error *error,
3044                 char **job) {
3045
3046         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
3047         int r;
3048
3049         assert(manager);
3050         assert(scope);
3051         assert(pid > 1);
3052         assert(job);
3053
3054         r = sd_bus_message_new_method_call(
3055                         manager->bus,
3056                         &m,
3057                         "org.freedesktop.systemd1",
3058                         "/org/freedesktop/systemd1",
3059                         "org.freedesktop.systemd1.Manager",
3060                         "StartTransientUnit");
3061         if (r < 0)
3062                 return r;
3063
3064         r = sd_bus_message_append(m, "ss", strempty(scope), "fail");
3065         if (r < 0)
3066                 return r;
3067
3068         r = sd_bus_message_open_container(m, 'a', "(sv)");
3069         if (r < 0)
3070                 return r;
3071
3072         if (!isempty(slice)) {
3073                 r = sd_bus_message_append(m, "(sv)", "Slice", "s", slice);
3074                 if (r < 0)
3075                         return r;
3076         }
3077
3078         if (!isempty(description)) {
3079                 r = sd_bus_message_append(m, "(sv)", "Description", "s", description);
3080                 if (r < 0)
3081                         return r;
3082         }
3083
3084         if (!isempty(after)) {
3085                 r = sd_bus_message_append(m, "(sv)", "After", "as", 1, after);
3086                 if (r < 0)
3087                         return r;
3088         }
3089
3090         if (!isempty(after2)) {
3091                 r = sd_bus_message_append(m, "(sv)", "After", "as", 1, after2);
3092                 if (r < 0)
3093                         return r;
3094         }
3095
3096         /* cgroup empty notification is not available in containers
3097          * currently. To make this less problematic, let's shorten the
3098          * stop timeout for sessions, so that we don't wait
3099          * forever. */
3100
3101         /* Make sure that the session shells are terminated with
3102          * SIGHUP since bash and friends tend to ignore SIGTERM */
3103         r = sd_bus_message_append(m, "(sv)", "SendSIGHUP", "b", true);
3104         if (r < 0)
3105                 return r;
3106
3107         r = sd_bus_message_append(m, "(sv)", "PIDs", "au", 1, pid);
3108         if (r < 0)
3109                 return r;
3110
3111         r = sd_bus_message_append(m, "(sv)", "TasksMax", "t", tasks_max);
3112         if (r < 0)
3113                 return r;
3114
3115         r = sd_bus_message_close_container(m);
3116         if (r < 0)
3117                 return r;
3118
3119         r = sd_bus_message_append(m, "a(sa(sv))", 0);
3120         if (r < 0)
3121                 return r;
3122
3123         r = sd_bus_call(manager->bus, m, 0, error, &reply);
3124         if (r < 0)
3125                 return r;
3126
3127         return strdup_job(reply, job);
3128 }
3129
3130 int manager_start_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) {
3131         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
3132         int r;
3133
3134         assert(manager);
3135         assert(unit);
3136         assert(job);
3137
3138         r = sd_bus_call_method(
3139                         manager->bus,
3140                         "org.freedesktop.systemd1",
3141                         "/org/freedesktop/systemd1",
3142                         "org.freedesktop.systemd1.Manager",
3143                         "StartUnit",
3144                         error,
3145                         &reply,
3146                         "ss", unit, "replace");
3147         if (r < 0)
3148                 return r;
3149
3150         return strdup_job(reply, job);
3151 }
3152
3153 int manager_stop_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) {
3154         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
3155         int r;
3156
3157         assert(manager);
3158         assert(unit);
3159         assert(job);
3160
3161         r = sd_bus_call_method(
3162                         manager->bus,
3163                         "org.freedesktop.systemd1",
3164                         "/org/freedesktop/systemd1",
3165                         "org.freedesktop.systemd1.Manager",
3166                         "StopUnit",
3167                         error,
3168                         &reply,
3169                         "ss", unit, "fail");
3170         if (r < 0) {
3171                 if (sd_bus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT) ||
3172                     sd_bus_error_has_name(error, BUS_ERROR_LOAD_FAILED)) {
3173
3174                         *job = NULL;
3175                         sd_bus_error_free(error);
3176                         return 0;
3177                 }
3178
3179                 return r;
3180         }
3181
3182         return strdup_job(reply, job);
3183 }
3184
3185 int manager_abandon_scope(Manager *manager, const char *scope, sd_bus_error *error) {
3186         _cleanup_free_ char *path = NULL;
3187         int r;
3188
3189         assert(manager);
3190         assert(scope);
3191
3192         path = unit_dbus_path_from_name(scope);
3193         if (!path)
3194                 return -ENOMEM;
3195
3196         r = sd_bus_call_method(
3197                         manager->bus,
3198                         "org.freedesktop.systemd1",
3199                         path,
3200                         "org.freedesktop.systemd1.Scope",
3201                         "Abandon",
3202                         error,
3203                         NULL,
3204                         NULL);
3205         if (r < 0) {
3206                 if (sd_bus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT) ||
3207                     sd_bus_error_has_name(error, BUS_ERROR_LOAD_FAILED) ||
3208                     sd_bus_error_has_name(error, BUS_ERROR_SCOPE_NOT_RUNNING)) {
3209                         sd_bus_error_free(error);
3210                         return 0;
3211                 }
3212
3213                 return r;
3214         }
3215
3216         return 1;
3217 }
3218
3219 int manager_kill_unit(Manager *manager, const char *unit, KillWho who, int signo, sd_bus_error *error) {
3220         assert(manager);
3221         assert(unit);
3222
3223         return sd_bus_call_method(
3224                         manager->bus,
3225                         "org.freedesktop.systemd1",
3226                         "/org/freedesktop/systemd1",
3227                         "org.freedesktop.systemd1.Manager",
3228                         "KillUnit",
3229                         error,
3230                         NULL,
3231                         "ssi", unit, who == KILL_LEADER ? "main" : "all", signo);
3232 }
3233
3234 int manager_unit_is_active(Manager *manager, const char *unit) {
3235         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
3236         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
3237         _cleanup_free_ char *path = NULL;
3238         const char *state;
3239         int r;
3240
3241         assert(manager);
3242         assert(unit);
3243
3244         path = unit_dbus_path_from_name(unit);
3245         if (!path)
3246                 return -ENOMEM;
3247
3248         r = sd_bus_get_property(
3249                         manager->bus,
3250                         "org.freedesktop.systemd1",
3251                         path,
3252                         "org.freedesktop.systemd1.Unit",
3253                         "ActiveState",
3254                         &error,
3255                         &reply,
3256                         "s");
3257         if (r < 0) {
3258                 /* systemd might have droppped off momentarily, let's
3259                  * not make this an error */
3260                 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_NO_REPLY) ||
3261                     sd_bus_error_has_name(&error, SD_BUS_ERROR_DISCONNECTED))
3262                         return true;
3263
3264                 /* If the unit is already unloaded then it's not
3265                  * active */
3266                 if (sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_UNIT) ||
3267                     sd_bus_error_has_name(&error, BUS_ERROR_LOAD_FAILED))
3268                         return false;
3269
3270                 return r;
3271         }
3272
3273         r = sd_bus_message_read(reply, "s", &state);
3274         if (r < 0)
3275                 return -EINVAL;
3276
3277         return !streq(state, "inactive") && !streq(state, "failed");
3278 }
3279
3280 int manager_job_is_active(Manager *manager, const char *path) {
3281         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
3282         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
3283         int r;
3284
3285         assert(manager);
3286         assert(path);
3287
3288         r = sd_bus_get_property(
3289                         manager->bus,
3290                         "org.freedesktop.systemd1",
3291                         path,
3292                         "org.freedesktop.systemd1.Job",
3293                         "State",
3294                         &error,
3295                         &reply,
3296                         "s");
3297         if (r < 0) {
3298                 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_NO_REPLY) ||
3299                     sd_bus_error_has_name(&error, SD_BUS_ERROR_DISCONNECTED))
3300                         return true;
3301
3302                 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_OBJECT))
3303                         return false;
3304
3305                 return r;
3306         }
3307
3308         /* We don't actually care about the state really. The fact
3309          * that we could read the job state is enough for us */
3310
3311         return true;
3312 }
3313 #endif // 0