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_is_valid((pid_t) pid))
 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_is_valid((pid_t) pid))
 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_free_ char *cc = NULL;
1135         Manager *m = userdata;
1136         int r, b, interactive;
1137         struct passwd *pw;
1138         const char *path;
1139         uint32_t uid;
1140         bool self = false;
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         if (!uid_is_valid(uid)) {
1150                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
1151
1152                 /* Note that we get the owner UID of the session, not the actual client UID here! */
1153                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds);
1154                 if (r < 0)
1155                         return r;
1156
1157                 r = sd_bus_creds_get_owner_uid(creds, &uid);
1158                 if (r < 0)
1159                         return r;
1160
1161                 self = true;
1162
1163         } else if (!uid_is_valid(uid))
1164                 return -EINVAL;
1165
1166         errno = 0;
1167         pw = getpwuid(uid);
1168         if (!pw)
1169                 return errno > 0 ? -errno : -ENOENT;
1170
1171         r = bus_verify_polkit_async(
1172                         message,
1173                         CAP_SYS_ADMIN,
1174                         self ? "org.freedesktop.login1.set-self-linger" : "org.freedesktop.login1.set-user-linger",
1175                         NULL,
1176                         interactive,
1177                         UID_INVALID,
1178                         &m->polkit_registry,
1179                         error);
1180         if (r < 0)
1181                 return r;
1182         if (r == 0)
1183                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1184
1185         mkdir_p_label("/var/lib/systemd", 0755);
1186
1187         r = mkdir_safe_label("/var/lib/systemd/linger", 0755, 0, 0);
1188         if (r < 0)
1189                 return r;
1190
1191         cc = cescape(pw->pw_name);
1192         if (!cc)
1193                 return -ENOMEM;
1194
1195         path = strjoina("/var/lib/systemd/linger/", cc);
1196         if (b) {
1197                 User *u;
1198
1199                 r = touch(path);
1200                 if (r < 0)
1201                         return r;
1202
1203                 if (manager_add_user_by_uid(m, uid, &u) >= 0)
1204                         user_start(u);
1205
1206         } else {
1207                 User *u;
1208
1209                 r = unlink(path);
1210                 if (r < 0 && errno != ENOENT)
1211                         return -errno;
1212
1213                 u = hashmap_get(m->users, UID_TO_PTR(uid));
1214                 if (u)
1215                         user_add_to_gc_queue(u);
1216         }
1217
1218         return sd_bus_reply_method_return(message, NULL);
1219 }
1220
1221 static int trigger_device(Manager *m, struct udev_device *d) {
1222         _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
1223         struct udev_list_entry *first, *item;
1224         int r;
1225
1226         assert(m);
1227
1228         e = udev_enumerate_new(m->udev);
1229         if (!e)
1230                 return -ENOMEM;
1231
1232         if (d) {
1233                 r = udev_enumerate_add_match_parent(e, d);
1234                 if (r < 0)
1235                         return r;
1236         }
1237
1238         r = udev_enumerate_scan_devices(e);
1239         if (r < 0)
1240                 return r;
1241
1242         first = udev_enumerate_get_list_entry(e);
1243         udev_list_entry_foreach(item, first) {
1244                 _cleanup_free_ char *t = NULL;
1245                 const char *p;
1246
1247                 p = udev_list_entry_get_name(item);
1248
1249                 t = strappend(p, "/uevent");
1250                 if (!t)
1251                         return -ENOMEM;
1252
1253                 write_string_file(t, "change", WRITE_STRING_FILE_CREATE);
1254         }
1255
1256         return 0;
1257 }
1258
1259 static int attach_device(Manager *m, const char *seat, const char *sysfs) {
1260         _cleanup_udev_device_unref_ struct udev_device *d = NULL;
1261         _cleanup_free_ char *rule = NULL, *file = NULL;
1262         const char *id_for_seat;
1263         int r;
1264
1265         assert(m);
1266         assert(seat);
1267         assert(sysfs);
1268
1269         d = udev_device_new_from_syspath(m->udev, sysfs);
1270         if (!d)
1271                 return -ENODEV;
1272
1273         if (!udev_device_has_tag(d, "seat"))
1274                 return -ENODEV;
1275
1276         id_for_seat = udev_device_get_property_value(d, "ID_FOR_SEAT");
1277         if (!id_for_seat)
1278                 return -ENODEV;
1279
1280         if (asprintf(&file, "/etc/udev/rules.d/72-seat-%s.rules", id_for_seat) < 0)
1281                 return -ENOMEM;
1282
1283         if (asprintf(&rule, "TAG==\"seat\", ENV{ID_FOR_SEAT}==\"%s\", ENV{ID_SEAT}=\"%s\"", id_for_seat, seat) < 0)
1284                 return -ENOMEM;
1285
1286         mkdir_p_label("/etc/udev/rules.d", 0755);
1287         r = write_string_file_atomic_label(file, rule);
1288         if (r < 0)
1289                 return r;
1290
1291         return trigger_device(m, d);
1292 }
1293
1294 static int flush_devices(Manager *m) {
1295         _cleanup_closedir_ DIR *d;
1296
1297         assert(m);
1298
1299         d = opendir("/etc/udev/rules.d");
1300         if (!d) {
1301                 if (errno != ENOENT)
1302                         log_warning_errno(errno, "Failed to open /etc/udev/rules.d: %m");
1303         } else {
1304                 struct dirent *de;
1305
1306                 FOREACH_DIRENT_ALL(de, d, break) {
1307                         if (!dirent_is_file(de))
1308                                 continue;
1309
1310                         if (!startswith(de->d_name, "72-seat-"))
1311                                 continue;
1312
1313                         if (!endswith(de->d_name, ".rules"))
1314                                 continue;
1315
1316                         if (unlinkat(dirfd(d), de->d_name, 0) < 0)
1317                                 log_warning_errno(errno, "Failed to unlink %s: %m", de->d_name);
1318                 }
1319         }
1320
1321         return trigger_device(m, NULL);
1322 }
1323
1324 static int method_attach_device(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1325         const char *sysfs, *seat;
1326         Manager *m = userdata;
1327         int interactive, r;
1328
1329         assert(message);
1330         assert(m);
1331
1332         r = sd_bus_message_read(message, "ssb", &seat, &sysfs, &interactive);
1333         if (r < 0)
1334                 return r;
1335
1336         if (!path_startswith(sysfs, "/sys"))
1337                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not in /sys", sysfs);
1338
1339         if (!seat_name_is_valid(seat))
1340                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Seat %s is not valid", seat);
1341
1342         r = bus_verify_polkit_async(
1343                         message,
1344                         CAP_SYS_ADMIN,
1345                         "org.freedesktop.login1.attach-device",
1346                         NULL,
1347                         interactive,
1348                         UID_INVALID,
1349                         &m->polkit_registry,
1350                         error);
1351         if (r < 0)
1352                 return r;
1353         if (r == 0)
1354                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1355
1356         r = attach_device(m, seat, sysfs);
1357         if (r < 0)
1358                 return r;
1359
1360         return sd_bus_reply_method_return(message, NULL);
1361 }
1362
1363 static int method_flush_devices(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1364         Manager *m = userdata;
1365         int interactive, r;
1366
1367         assert(message);
1368         assert(m);
1369
1370         r = sd_bus_message_read(message, "b", &interactive);
1371         if (r < 0)
1372                 return r;
1373
1374         r = bus_verify_polkit_async(
1375                         message,
1376                         CAP_SYS_ADMIN,
1377                         "org.freedesktop.login1.flush-devices",
1378                         NULL,
1379                         interactive,
1380                         UID_INVALID,
1381                         &m->polkit_registry,
1382                         error);
1383         if (r < 0)
1384                 return r;
1385         if (r == 0)
1386                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1387
1388         r = flush_devices(m);
1389         if (r < 0)
1390                 return r;
1391
1392         return sd_bus_reply_method_return(message, NULL);
1393 }
1394
1395 static int have_multiple_sessions(
1396                 Manager *m,
1397                 uid_t uid) {
1398
1399         Session *session;
1400         Iterator i;
1401
1402         assert(m);
1403
1404         /* Check for other users' sessions. Greeter sessions do not
1405          * count, and non-login sessions do not count either. */
1406         HASHMAP_FOREACH(session, m->sessions, i)
1407                 if (session->class == SESSION_USER &&
1408                     session->user->uid != uid)
1409                         return true;
1410
1411         return false;
1412 }
1413
1414 #if 0 /// elogind has its own variant in elogind-dbus.c
1415 static int bus_manager_log_shutdown(
1416                 Manager *m,
1417                 const char *unit_name) {
1418
1419         const char *p, *q;
1420
1421         assert(m);
1422         assert(unit_name);
1423
1424         if (streq(unit_name, SPECIAL_POWEROFF_TARGET)) {
1425                 p = "MESSAGE=System is powering down";
1426                 q = "SHUTDOWN=power-off";
1427         } else if (streq(unit_name, SPECIAL_REBOOT_TARGET)) {
1428                 p = "MESSAGE=System is rebooting";
1429                 q = "SHUTDOWN=reboot";
1430         } else if (streq(unit_name, SPECIAL_HALT_TARGET)) {
1431                 p = "MESSAGE=System is halting";
1432                 q = "SHUTDOWN=halt";
1433         } else if (streq(unit_name, SPECIAL_KEXEC_TARGET)) {
1434                 p = "MESSAGE=System is rebooting with kexec";
1435                 q = "SHUTDOWN=kexec";
1436         } else {
1437                 p = "MESSAGE=System is shutting down";
1438                 q = NULL;
1439         }
1440
1441         if (isempty(m->wall_message))
1442                 p = strjoina(p, ".");
1443         else
1444                 p = strjoina(p, " (", m->wall_message, ").");
1445
1446         return log_struct(LOG_NOTICE,
1447                           "MESSAGE_ID=" SD_MESSAGE_SHUTDOWN_STR,
1448                           p,
1449                           q,
1450                           NULL);
1451 }
1452 #endif // 0
1453
1454 static int lid_switch_ignore_handler(sd_event_source *e, uint64_t usec, void *userdata) {
1455         Manager *m = userdata;
1456
1457         assert(e);
1458         assert(m);
1459
1460         m->lid_switch_ignore_event_source = sd_event_source_unref(m->lid_switch_ignore_event_source);
1461         return 0;
1462 }
1463
1464 int manager_set_lid_switch_ignore(Manager *m, usec_t until) {
1465         int r;
1466
1467         assert(m);
1468
1469         if (until <= now(CLOCK_MONOTONIC))
1470                 return 0;
1471
1472         /* We want to ignore the lid switch for a while after each
1473          * suspend, and after boot-up. Hence let's install a timer for
1474          * this. As long as the event source exists we ignore the lid
1475          * switch. */
1476
1477         if (m->lid_switch_ignore_event_source) {
1478                 usec_t u;
1479
1480                 r = sd_event_source_get_time(m->lid_switch_ignore_event_source, &u);
1481                 if (r < 0)
1482                         return r;
1483
1484                 if (until <= u)
1485                         return 0;
1486
1487                 r = sd_event_source_set_time(m->lid_switch_ignore_event_source, until);
1488         } else
1489                 r = sd_event_add_time(
1490                                 m->event,
1491                                 &m->lid_switch_ignore_event_source,
1492                                 CLOCK_MONOTONIC,
1493                                 until, 0,
1494                                 lid_switch_ignore_handler, m);
1495
1496         return r;
1497 }
1498
1499 #if 0 /// elogind-dbus.c needs to access this
1500 static int send_prepare_for(Manager *m, InhibitWhat w, bool _active) {
1501 #else
1502 int send_prepare_for(Manager *m, InhibitWhat w, bool _active) {
1503 #endif // 0
1504
1505         static const char * const signal_name[_INHIBIT_WHAT_MAX] = {
1506                 [INHIBIT_SHUTDOWN] = "PrepareForShutdown",
1507                 [INHIBIT_SLEEP] = "PrepareForSleep"
1508         };
1509
1510         int active = _active;
1511
1512         assert(m);
1513         assert(w >= 0);
1514         assert(w < _INHIBIT_WHAT_MAX);
1515         assert(signal_name[w]);
1516
1517         return sd_bus_emit_signal(m->bus,
1518                                   "/org/freedesktop/login1",
1519                                   "org.freedesktop.login1.Manager",
1520                                   signal_name[w],
1521                                   "b",
1522                                   active);
1523 }
1524
1525 #if 0 /// elogind has its own variant in elogind-dbus.c
1526 static int execute_shutdown_or_sleep(
1527                 Manager *m,
1528                 InhibitWhat w,
1529                 const char *unit_name,
1530                 sd_bus_error *error) {
1531
1532         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1533         char *c = NULL;
1534         const char *p;
1535         int r;
1536
1537         assert(m);
1538         assert(w > 0);
1539         assert(w < _INHIBIT_WHAT_MAX);
1540         assert(unit_name);
1541
1542         if (w == INHIBIT_SHUTDOWN)
1543                 bus_manager_log_shutdown(m, unit_name);
1544
1545         r = sd_bus_call_method(
1546                         m->bus,
1547                         "org.freedesktop.systemd1",
1548                         "/org/freedesktop/systemd1",
1549                         "org.freedesktop.systemd1.Manager",
1550                         "StartUnit",
1551                         error,
1552                         &reply,
1553                         "ss", unit_name, "replace-irreversibly");
1554         if (r < 0)
1555                 goto error;
1556
1557         r = sd_bus_message_read(reply, "o", &p);
1558         if (r < 0)
1559                 goto error;
1560
1561         c = strdup(p);
1562         if (!c) {
1563                 r = -ENOMEM;
1564                 goto error;
1565         }
1566
1567         m->action_unit = unit_name;
1568         free(m->action_job);
1569         m->action_job = c;
1570         m->action_what = w;
1571
1572         /* Make sure the lid switch is ignored for a while */
1573         manager_set_lid_switch_ignore(m, now(CLOCK_MONOTONIC) + m->holdoff_timeout_usec);
1574
1575         return 0;
1576
1577 error:
1578         /* Tell people that they now may take a lock again */
1579         send_prepare_for(m, m->action_what, false);
1580
1581         return r;
1582 }
1583
1584 int manager_dispatch_delayed(Manager *manager, bool timeout) {
1585
1586         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1587         Inhibitor *offending = NULL;
1588         int r;
1589
1590         assert(manager);
1591
1592         if (manager->action_what == 0 || manager->action_job)
1593                 return 0;
1594
1595         if (manager_is_inhibited(manager, manager->action_what, INHIBIT_DELAY, NULL, false, false, 0, &offending)) {
1596                 _cleanup_free_ char *comm = NULL, *u = NULL;
1597
1598                 if (!timeout)
1599                         return 0;
1600
1601                 (void) get_process_comm(offending->pid, &comm);
1602                 u = uid_to_name(offending->uid);
1603
1604                 log_notice("Delay lock is active (UID "UID_FMT"/%s, PID "PID_FMT"/%s) but inhibitor timeout is reached.",
1605                            offending->uid, strna(u),
1606                            offending->pid, strna(comm));
1607         }
1608
1609         /* Actually do the operation */
1610         r = execute_shutdown_or_sleep(manager, manager->action_what, manager->action_unit, &error);
1611         if (r < 0) {
1612                 log_warning("Error during inhibitor-delayed operation (already returned success to client): %s",
1613                             bus_error_message(&error, r));
1614
1615                 manager->action_unit = NULL;
1616                 manager->action_what = 0;
1617                 return r;
1618         }
1619
1620         return 1;
1621 }
1622 #endif // 0
1623
1624 #if 0 /// elogind-dbus.c needs to access this
1625 static int manager_inhibit_timeout_handler(
1626 #else
1627 int manager_inhibit_timeout_handler(
1628 #endif // 0
1629                         sd_event_source *s,
1630                         uint64_t usec,
1631                         void *userdata) {
1632
1633         Manager *manager = userdata;
1634         int r;
1635
1636         assert(manager);
1637         assert(manager->inhibit_timeout_source == s);
1638
1639         r = manager_dispatch_delayed(manager, true);
1640         return (r < 0) ? r : 0;
1641 }
1642
1643 #if 0 /// elogind has its own variant in elogind-dbus.c
1644 static int delay_shutdown_or_sleep(
1645                 Manager *m,
1646                 InhibitWhat w,
1647                 const char *unit_name) {
1648
1649         int r;
1650         usec_t timeout_val;
1651
1652         assert(m);
1653         assert(w >= 0);
1654         assert(w < _INHIBIT_WHAT_MAX);
1655         assert(unit_name);
1656
1657         timeout_val = now(CLOCK_MONOTONIC) + m->inhibit_delay_max;
1658
1659         if (m->inhibit_timeout_source) {
1660                 r = sd_event_source_set_time(m->inhibit_timeout_source, timeout_val);
1661                 if (r < 0)
1662                         return log_error_errno(r, "sd_event_source_set_time() failed: %m");
1663
1664                 r = sd_event_source_set_enabled(m->inhibit_timeout_source, SD_EVENT_ONESHOT);
1665                 if (r < 0)
1666                         return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
1667         } else {
1668                 r = sd_event_add_time(m->event, &m->inhibit_timeout_source, CLOCK_MONOTONIC,
1669                                       timeout_val, 0, manager_inhibit_timeout_handler, m);
1670                 if (r < 0)
1671                         return r;
1672         }
1673
1674         m->action_unit = unit_name;
1675         m->action_what = w;
1676
1677         return 0;
1678 }
1679 #endif // 0
1680
1681 #if 0 /// elogind has its own variant in elogind-dbus.c
1682 int bus_manager_shutdown_or_sleep_now_or_later(
1683                 Manager *m,
1684                 const char *unit_name,
1685                 InhibitWhat w,
1686                 sd_bus_error *error) {
1687
1688         bool delayed;
1689         int r;
1690
1691         assert(m);
1692         assert(unit_name);
1693         assert(w > 0);
1694         assert(w <= _INHIBIT_WHAT_MAX);
1695         assert(!m->action_job);
1696
1697         /* Tell everybody to prepare for shutdown/sleep */
1698         send_prepare_for(m, w, true);
1699
1700         delayed =
1701                 m->inhibit_delay_max > 0 &&
1702                 manager_is_inhibited(m, w, INHIBIT_DELAY, NULL, false, false, 0, NULL);
1703
1704         log_debug_elogind("%s called for %s (%sdelayed)", __FUNCTION__,
1705                           handle_action_to_string(action),
1706                           delayed ? "" : "NOT ");
1707         if (delayed)
1708                 /* Shutdown is delayed, keep in mind what we
1709                  * want to do, and start a timeout */
1710                 r = delay_shutdown_or_sleep(m, w, unit_name);
1711         else
1712                 /* Shutdown is not delayed, execute it
1713                  * immediately */
1714                 r = execute_shutdown_or_sleep(m, w, unit_name, error);
1715
1716         return r;
1717 }
1718 #endif // 0
1719
1720 #if 0 /// elogind-dbus.c needs to access this
1721 static int verify_shutdown_creds(
1722 #else
1723 int verify_shutdown_creds(
1724 #endif // 0
1725                 Manager *m,
1726                 sd_bus_message *message,
1727                 InhibitWhat w,
1728                 bool interactive,
1729                 const char *action,
1730                 const char *action_multiple_sessions,
1731                 const char *action_ignore_inhibit,
1732                 sd_bus_error *error) {
1733
1734         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
1735         bool multiple_sessions, blocked;
1736         uid_t uid;
1737         int r;
1738
1739         assert(m);
1740         assert(message);
1741         assert(w >= 0);
1742         assert(w <= _INHIBIT_WHAT_MAX);
1743
1744         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
1745         if (r < 0)
1746                 return r;
1747
1748         r = sd_bus_creds_get_euid(creds, &uid);
1749         if (r < 0)
1750                 return r;
1751
1752         r = have_multiple_sessions(m, uid);
1753         if (r < 0)
1754                 return r;
1755
1756         multiple_sessions = r > 0;
1757         blocked = manager_is_inhibited(m, w, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
1758
1759         if (multiple_sessions && action_multiple_sessions) {
1760                 r = bus_verify_polkit_async(message, CAP_SYS_BOOT, action_multiple_sessions, NULL, interactive, UID_INVALID, &m->polkit_registry, error);
1761                 if (r < 0)
1762                         return r;
1763                 if (r == 0)
1764                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1765         }
1766
1767         if (blocked && action_ignore_inhibit) {
1768                 r = bus_verify_polkit_async(message, CAP_SYS_BOOT, action_ignore_inhibit, NULL, interactive, UID_INVALID, &m->polkit_registry, error);
1769                 if (r < 0)
1770                         return r;
1771                 if (r == 0)
1772                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1773         }
1774
1775         if (!multiple_sessions && !blocked && action) {
1776                 r = bus_verify_polkit_async(message, CAP_SYS_BOOT, action, NULL, interactive, UID_INVALID, &m->polkit_registry, error);
1777                 if (r < 0)
1778                         return r;
1779                 if (r == 0)
1780                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1781         }
1782
1783         return 0;
1784 }
1785
1786 #if 0 /// elogind has its own variant in elogind-dbus.c
1787 static int method_do_shutdown_or_sleep(
1788                 Manager *m,
1789                 sd_bus_message *message,
1790                 const char *unit_name,
1791                 InhibitWhat w,
1792                 const char *action,
1793                 const char *action_multiple_sessions,
1794                 const char *action_ignore_inhibit,
1795                 const char *sleep_verb,
1796                 sd_bus_error *error) {
1797
1798         int interactive, r;
1799
1800         assert(m);
1801         assert(message);
1802         assert(unit_name);
1803         assert(w >= 0);
1804         assert(w <= _INHIBIT_WHAT_MAX);
1805
1806         r = sd_bus_message_read(message, "b", &interactive);
1807         if (r < 0)
1808                 return r;
1809
1810         log_debug_elogind("%s called with action '%s', sleep '%s' (%sinteractive)",
1811                           __FUNCTION__, action, sleep_verb,
1812                           interactive ? "" : "NOT ");
1813         /* Don't allow multiple jobs being executed at the same time */
1814         if (m->action_what)
1815                 return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS, "There's already a shutdown or sleep operation in progress");
1816
1817         if (sleep_verb) {
1818                 r = can_sleep(sleep_verb);
1819                 if (r < 0)
1820                         return r;
1821
1822                 if (r == 0)
1823                         return sd_bus_error_setf(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED, "Sleep verb not supported");
1824         }
1825
1826         r = verify_shutdown_creds(m, message, w, interactive, action, action_multiple_sessions,
1827                                   action_ignore_inhibit, error);
1828         log_debug_elogind("verify_shutdown_creds() returned %d", r);
1829         if (r != 0)
1830                 return r;
1831
1832         r = bus_manager_shutdown_or_sleep_now_or_later(m, unit_name, w, error);
1833         if (r < 0)
1834                 return r;
1835
1836         return sd_bus_reply_method_return(message, NULL);
1837 }
1838
1839 static int method_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1840         Manager *m = userdata;
1841
1842         log_debug_elogind("%s called", __FUNCTION__);
1843         return method_do_shutdown_or_sleep(
1844                         m, message,
1845                         SPECIAL_POWEROFF_TARGET,
1846                         INHIBIT_SHUTDOWN,
1847                         "org.freedesktop.login1.power-off",
1848                         "org.freedesktop.login1.power-off-multiple-sessions",
1849                         "org.freedesktop.login1.power-off-ignore-inhibit",
1850                         NULL,
1851                         error);
1852 }
1853
1854 static int method_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1855         Manager *m = userdata;
1856
1857         log_debug_elogind("%s called", __FUNCTION__);
1858         return method_do_shutdown_or_sleep(
1859                         m, message,
1860                         SPECIAL_REBOOT_TARGET,
1861                         INHIBIT_SHUTDOWN,
1862                         "org.freedesktop.login1.reboot",
1863                         "org.freedesktop.login1.reboot-multiple-sessions",
1864                         "org.freedesktop.login1.reboot-ignore-inhibit",
1865                         NULL,
1866                         error);
1867 }
1868
1869 static int method_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1870         Manager *m = userdata;
1871
1872         return method_do_shutdown_or_sleep(
1873                         m, message,
1874                         SPECIAL_HALT_TARGET,
1875                         INHIBIT_SHUTDOWN,
1876                         "org.freedesktop.login1.halt",
1877                         "org.freedesktop.login1.halt-multiple-sessions",
1878                         "org.freedesktop.login1.halt-ignore-inhibit",
1879                         NULL,
1880                         error);
1881 }
1882
1883 static int method_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1884         Manager *m = userdata;
1885
1886         log_debug_elogind("%s called", __FUNCTION__);
1887         return method_do_shutdown_or_sleep(
1888                         m, message,
1889                         SPECIAL_SUSPEND_TARGET,
1890                         INHIBIT_SLEEP,
1891                         "org.freedesktop.login1.suspend",
1892                         "org.freedesktop.login1.suspend-multiple-sessions",
1893                         "org.freedesktop.login1.suspend-ignore-inhibit",
1894                         "suspend",
1895                         error);
1896 }
1897 #endif // 0
1898
1899 static int nologin_timeout_handler(
1900                         sd_event_source *s,
1901                         uint64_t usec,
1902                         void *userdata) {
1903
1904         Manager *m = userdata;
1905         int r;
1906
1907         log_info("Creating /run/nologin, blocking further logins...");
1908
1909         r = write_string_file_atomic_label("/run/nologin", "System is going down.");
1910         if (r < 0)
1911                 log_error_errno(r, "Failed to create /run/nologin: %m");
1912         else
1913                 m->unlink_nologin = true;
1914
1915         return 0;
1916 }
1917
1918 static int update_schedule_file(Manager *m) {
1919         _cleanup_free_ char *temp_path = NULL;
1920         _cleanup_fclose_ FILE *f = NULL;
1921         int r;
1922
1923         assert(m);
1924
1925         r = mkdir_safe_label("/run/systemd/shutdown", 0755, 0, 0);
1926         if (r < 0)
1927                 return log_error_errno(r, "Failed to create shutdown subdirectory: %m");
1928
1929         r = fopen_temporary("/run/systemd/shutdown/scheduled", &f, &temp_path);
1930         if (r < 0)
1931                 return log_error_errno(r, "Failed to save information about scheduled shutdowns: %m");
1932
1933         (void) fchmod(fileno(f), 0644);
1934
1935         fprintf(f,
1936                 "USEC="USEC_FMT"\n"
1937                 "WARN_WALL=%i\n"
1938                 "MODE=%s\n",
1939                 m->scheduled_shutdown_timeout,
1940                 m->enable_wall_messages,
1941                 m->scheduled_shutdown_type);
1942
1943         if (!isempty(m->wall_message)) {
1944                 _cleanup_free_ char *t;
1945
1946                 t = cescape(m->wall_message);
1947                 if (!t) {
1948                         r = -ENOMEM;
1949                         goto fail;
1950                 }
1951
1952                 fprintf(f, "WALL_MESSAGE=%s\n", t);
1953         }
1954
1955         r = fflush_and_check(f);
1956         if (r < 0)
1957                 goto fail;
1958
1959         if (rename(temp_path, "/run/systemd/shutdown/scheduled") < 0) {
1960                 r = -errno;
1961                 goto fail;
1962         }
1963
1964         return 0;
1965
1966 fail:
1967         (void) unlink(temp_path);
1968         (void) unlink("/run/systemd/shutdown/scheduled");
1969
1970         return log_error_errno(r, "Failed to write information about scheduled shutdowns: %m");
1971 }
1972
1973 static void reset_scheduled_shutdown(Manager *m) {
1974         assert(m);
1975
1976         m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
1977         m->wall_message_timeout_source = sd_event_source_unref(m->wall_message_timeout_source);
1978         m->nologin_timeout_source = sd_event_source_unref(m->nologin_timeout_source);
1979
1980         m->scheduled_shutdown_type = mfree(m->scheduled_shutdown_type);
1981         m->scheduled_shutdown_timeout = 0;
1982         m->shutdown_dry_run = false;
1983
1984         if (m->unlink_nologin) {
1985                 (void) unlink("/run/nologin");
1986                 m->unlink_nologin = false;
1987         }
1988
1989         (void) unlink("/run/systemd/shutdown/scheduled");
1990 }
1991
1992 #if 0 /// elogind has its own variant in elogind-dbus.c
1993 static int manager_scheduled_shutdown_handler(
1994                         sd_event_source *s,
1995                         uint64_t usec,
1996                         void *userdata) {
1997
1998         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1999         Manager *m = userdata;
2000         const char *target;
2001         int r;
2002
2003         assert(m);
2004
2005         if (isempty(m->scheduled_shutdown_type))
2006                 return 0;
2007
2008         if (streq(m->scheduled_shutdown_type, "poweroff"))
2009                 target = SPECIAL_POWEROFF_TARGET;
2010         else if (streq(m->scheduled_shutdown_type, "reboot"))
2011                 target = SPECIAL_REBOOT_TARGET;
2012         else if (streq(m->scheduled_shutdown_type, "halt"))
2013                 target = SPECIAL_HALT_TARGET;
2014         else
2015                 assert_not_reached("unexpected shutdown type");
2016
2017         /* Don't allow multiple jobs being executed at the same time */
2018         if (m->action_what) {
2019                 r = -EALREADY;
2020                 log_error("Scheduled shutdown to %s failed: shutdown or sleep operation already in progress", target);
2021                 goto error;
2022         }
2023
2024         if (m->shutdown_dry_run) {
2025                 /* We do not process delay inhibitors here.  Otherwise, we
2026                  * would have to be considered "in progress" (like the check
2027                  * above) for some seconds after our admin has seen the final
2028                  * wall message. */
2029
2030                 bus_manager_log_shutdown(m, target);
2031                 log_info("Running in dry run, suppressing action.");
2032                 reset_scheduled_shutdown(m);
2033
2034                 return 0;
2035         }
2036
2037         r = bus_manager_shutdown_or_sleep_now_or_later(m, target, INHIBIT_SHUTDOWN, &error);
2038         if (r < 0) {
2039                 log_error_errno(r, "Scheduled shutdown to %s failed: %m", target);
2040                 goto error;
2041         }
2042
2043         return 0;
2044
2045 error:
2046         reset_scheduled_shutdown(m);
2047         return r;
2048 }
2049 #endif // 0
2050
2051 static int method_schedule_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2052         Manager *m = userdata;
2053         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2054         const char *action_multiple_sessions = NULL;
2055         const char *action_ignore_inhibit = NULL;
2056         const char *action = NULL;
2057         uint64_t elapse;
2058         char *type;
2059         int r;
2060
2061         assert(m);
2062         assert(message);
2063
2064         log_debug_elogind("%s called", __FUNCTION__);
2065         r = sd_bus_message_read(message, "st", &type, &elapse);
2066         if (r < 0)
2067                 return r;
2068
2069         if (startswith(type, "dry-")) {
2070                 type += 4;
2071                 m->shutdown_dry_run = true;
2072         }
2073
2074         if (streq(type, "poweroff")) {
2075                 action = "org.freedesktop.login1.power-off";
2076                 action_multiple_sessions = "org.freedesktop.login1.power-off-multiple-sessions";
2077                 action_ignore_inhibit = "org.freedesktop.login1.power-off-ignore-inhibit";
2078         } else if (streq(type, "reboot")) {
2079                 action = "org.freedesktop.login1.reboot";
2080                 action_multiple_sessions = "org.freedesktop.login1.reboot-multiple-sessions";
2081                 action_ignore_inhibit = "org.freedesktop.login1.reboot-ignore-inhibit";
2082         } else if (streq(type, "halt")) {
2083                 action = "org.freedesktop.login1.halt";
2084                 action_multiple_sessions = "org.freedesktop.login1.halt-multiple-sessions";
2085                 action_ignore_inhibit = "org.freedesktop.login1.halt-ignore-inhibit";
2086         } else
2087                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unsupported shutdown type");
2088
2089         r = verify_shutdown_creds(m, message, INHIBIT_SHUTDOWN, false,
2090                                   action, action_multiple_sessions, action_ignore_inhibit, error);
2091         if (r != 0)
2092                 return r;
2093
2094         if (m->scheduled_shutdown_timeout_source) {
2095                 r = sd_event_source_set_time(m->scheduled_shutdown_timeout_source, elapse);
2096                 if (r < 0)
2097                         return log_error_errno(r, "sd_event_source_set_time() failed: %m");
2098
2099                 r = sd_event_source_set_enabled(m->scheduled_shutdown_timeout_source, SD_EVENT_ONESHOT);
2100                 if (r < 0)
2101                         return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
2102         } else {
2103                 r = sd_event_add_time(m->event, &m->scheduled_shutdown_timeout_source,
2104                                       CLOCK_REALTIME, elapse, 0, manager_scheduled_shutdown_handler, m);
2105                 if (r < 0)
2106                         return log_error_errno(r, "sd_event_add_time() failed: %m");
2107         }
2108
2109         r = free_and_strdup(&m->scheduled_shutdown_type, type);
2110         if (r < 0) {
2111                 m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2112                 return log_oom();
2113         }
2114
2115         if (m->nologin_timeout_source) {
2116                 r = sd_event_source_set_time(m->nologin_timeout_source, elapse);
2117                 if (r < 0)
2118                         return log_error_errno(r, "sd_event_source_set_time() failed: %m");
2119
2120                 r = sd_event_source_set_enabled(m->nologin_timeout_source, SD_EVENT_ONESHOT);
2121                 if (r < 0)
2122                         return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
2123         } else {
2124                 r = sd_event_add_time(m->event, &m->nologin_timeout_source,
2125                                       CLOCK_REALTIME, elapse - 5 * USEC_PER_MINUTE, 0, nologin_timeout_handler, m);
2126                 if (r < 0)
2127                         return log_error_errno(r, "sd_event_add_time() failed: %m");
2128         }
2129
2130         m->scheduled_shutdown_timeout = elapse;
2131
2132         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
2133         if (r >= 0) {
2134                 const char *tty = NULL;
2135
2136                 (void) sd_bus_creds_get_uid(creds, &m->scheduled_shutdown_uid);
2137                 (void) sd_bus_creds_get_tty(creds, &tty);
2138
2139                 r = free_and_strdup(&m->scheduled_shutdown_tty, tty);
2140                 if (r < 0) {
2141                         m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2142                         return log_oom();
2143                 }
2144         }
2145
2146         r = manager_setup_wall_message_timer(m);
2147         if (r < 0)
2148                 return r;
2149
2150         r = update_schedule_file(m);
2151         if (r < 0)
2152                 return r;
2153
2154         return sd_bus_reply_method_return(message, NULL);
2155 }
2156
2157 static int method_cancel_scheduled_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2158         Manager *m = userdata;
2159         bool cancelled;
2160 #if 1 /// elogind needs to construct the message to allow extra wall messages
2161         _cleanup_free_ char *l = NULL;
2162 #endif // 1
2163
2164         assert(m);
2165         assert(message);
2166
2167         log_debug_elogind("%s called", __FUNCTION__);
2168         cancelled = m->scheduled_shutdown_type != NULL;
2169         reset_scheduled_shutdown(m);
2170
2171         if (cancelled) {
2172                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2173                 const char *tty = NULL;
2174                 uid_t uid = 0;
2175                 int r;
2176
2177                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
2178                 if (r >= 0) {
2179                         (void) sd_bus_creds_get_uid(creds, &uid);
2180                         (void) sd_bus_creds_get_tty(creds, &tty);
2181                 }
2182
2183 #if 0 /// elogind wants to allow extra cancellation messages
2184                 utmp_wall("The system shutdown has been cancelled",
2185                           uid_to_name(uid), tty, logind_wall_tty_filter, m);
2186 #else
2187                 r = asprintf(&l, "%s%sThe system shutdown has been cancelled!",
2188                              strempty(m->wall_message),
2189                              isempty(m->wall_message) ? "" : "\n");
2190                 if (r < 0) {
2191                         log_oom();
2192                         return 0;
2193                 }
2194
2195                 utmp_wall(l, uid_to_name(uid), tty, logind_wall_tty_filter, m);
2196 #endif // 0
2197         }
2198
2199         return sd_bus_reply_method_return(message, "b", cancelled);
2200 }
2201
2202 #if 0 /// elogind has its own variant in elogind-dbus.c
2203 static int method_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2204         Manager *m = userdata;
2205
2206         log_debug_elogind("%s called", __FUNCTION__);
2207         return method_do_shutdown_or_sleep(
2208                         m, message,
2209                         SPECIAL_HIBERNATE_TARGET,
2210                         INHIBIT_SLEEP,
2211                         "org.freedesktop.login1.hibernate",
2212                         "org.freedesktop.login1.hibernate-multiple-sessions",
2213                         "org.freedesktop.login1.hibernate-ignore-inhibit",
2214                         "hibernate",
2215                         error);
2216 }
2217
2218 static int method_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2219         Manager *m = userdata;
2220
2221         log_debug_elogind("%s called", __FUNCTION__);
2222         return method_do_shutdown_or_sleep(
2223                         m, message,
2224                         SPECIAL_HYBRID_SLEEP_TARGET,
2225                         INHIBIT_SLEEP,
2226                         "org.freedesktop.login1.hibernate",
2227                         "org.freedesktop.login1.hibernate-multiple-sessions",
2228                         "org.freedesktop.login1.hibernate-ignore-inhibit",
2229                         "hybrid-sleep",
2230                         error);
2231 }
2232 #endif // 0
2233
2234 static int method_can_shutdown_or_sleep(
2235                 Manager *m,
2236                 sd_bus_message *message,
2237                 InhibitWhat w,
2238                 const char *action,
2239                 const char *action_multiple_sessions,
2240                 const char *action_ignore_inhibit,
2241                 const char *sleep_verb,
2242                 sd_bus_error *error) {
2243
2244         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2245         bool multiple_sessions, challenge, blocked;
2246         const char *result = NULL;
2247         uid_t uid;
2248         int r;
2249
2250         assert(m);
2251         assert(message);
2252         assert(w >= 0);
2253         assert(w <= _INHIBIT_WHAT_MAX);
2254         assert(action);
2255         assert(action_multiple_sessions);
2256         assert(action_ignore_inhibit);
2257
2258         if (sleep_verb) {
2259 #if 0 /// elogind needs to have the manager being passed
2260                 r = can_sleep(sleep_verb);
2261 #else
2262                 r = can_sleep(m, sleep_verb);
2263 #endif // 0
2264                 if (r < 0)
2265                         return r;
2266                 if (r == 0)
2267                         return sd_bus_reply_method_return(message, "s", "na");
2268         }
2269
2270         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
2271         if (r < 0)
2272                 return r;
2273
2274         r = sd_bus_creds_get_euid(creds, &uid);
2275         if (r < 0)
2276                 return r;
2277
2278         r = have_multiple_sessions(m, uid);
2279         if (r < 0)
2280                 return r;
2281
2282         multiple_sessions = r > 0;
2283         blocked = manager_is_inhibited(m, w, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
2284
2285         if (multiple_sessions) {
2286                 r = bus_test_polkit(message, CAP_SYS_BOOT, action_multiple_sessions, NULL, UID_INVALID, &challenge, error);
2287                 if (r < 0)
2288                         return r;
2289
2290                 if (r > 0)
2291                         result = "yes";
2292                 else if (challenge)
2293                         result = "challenge";
2294                 else
2295                         result = "no";
2296         }
2297
2298         if (blocked) {
2299                 r = bus_test_polkit(message, CAP_SYS_BOOT, action_ignore_inhibit, NULL, UID_INVALID, &challenge, error);
2300                 if (r < 0)
2301                         return r;
2302
2303                 if (r > 0 && !result)
2304                         result = "yes";
2305                 else if (challenge && (!result || streq(result, "yes")))
2306                         result = "challenge";
2307                 else
2308                         result = "no";
2309         }
2310
2311         if (!multiple_sessions && !blocked) {
2312                 /* If neither inhibit nor multiple sessions
2313                  * apply then just check the normal policy */
2314
2315                 r = bus_test_polkit(message, CAP_SYS_BOOT, action, NULL, UID_INVALID, &challenge, error);
2316                 if (r < 0)
2317                         return r;
2318
2319                 if (r > 0)
2320                         result = "yes";
2321                 else if (challenge)
2322                         result = "challenge";
2323                 else
2324                         result = "no";
2325         }
2326
2327         return sd_bus_reply_method_return(message, "s", result);
2328 }
2329
2330 static int method_can_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2331         Manager *m = userdata;
2332
2333         return method_can_shutdown_or_sleep(
2334                         m, message,
2335                         INHIBIT_SHUTDOWN,
2336                         "org.freedesktop.login1.power-off",
2337                         "org.freedesktop.login1.power-off-multiple-sessions",
2338                         "org.freedesktop.login1.power-off-ignore-inhibit",
2339                         NULL,
2340                         error);
2341 }
2342
2343 static int method_can_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2344         Manager *m = userdata;
2345
2346         return method_can_shutdown_or_sleep(
2347                         m, message,
2348                         INHIBIT_SHUTDOWN,
2349                         "org.freedesktop.login1.reboot",
2350                         "org.freedesktop.login1.reboot-multiple-sessions",
2351                         "org.freedesktop.login1.reboot-ignore-inhibit",
2352                         NULL,
2353                         error);
2354 }
2355
2356 static int method_can_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2357         Manager *m = userdata;
2358
2359         return method_can_shutdown_or_sleep(
2360                         m, message,
2361                         INHIBIT_SHUTDOWN,
2362                         "org.freedesktop.login1.halt",
2363                         "org.freedesktop.login1.halt-multiple-sessions",
2364                         "org.freedesktop.login1.halt-ignore-inhibit",
2365                         NULL,
2366                         error);
2367 }
2368
2369 static int method_can_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2370         Manager *m = userdata;
2371
2372         return method_can_shutdown_or_sleep(
2373                         m, message,
2374                         INHIBIT_SLEEP,
2375                         "org.freedesktop.login1.suspend",
2376                         "org.freedesktop.login1.suspend-multiple-sessions",
2377                         "org.freedesktop.login1.suspend-ignore-inhibit",
2378                         "suspend",
2379                         error);
2380 }
2381
2382 static int method_can_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2383         Manager *m = userdata;
2384
2385         return method_can_shutdown_or_sleep(
2386                         m, message,
2387                         INHIBIT_SLEEP,
2388                         "org.freedesktop.login1.hibernate",
2389                         "org.freedesktop.login1.hibernate-multiple-sessions",
2390                         "org.freedesktop.login1.hibernate-ignore-inhibit",
2391                         "hibernate",
2392                         error);
2393 }
2394
2395 static int method_can_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2396         Manager *m = userdata;
2397
2398         return method_can_shutdown_or_sleep(
2399                         m, message,
2400                         INHIBIT_SLEEP,
2401                         "org.freedesktop.login1.hibernate",
2402                         "org.freedesktop.login1.hibernate-multiple-sessions",
2403                         "org.freedesktop.login1.hibernate-ignore-inhibit",
2404                         "hybrid-sleep",
2405                         error);
2406 }
2407
2408 static int property_get_reboot_to_firmware_setup(
2409                 sd_bus *bus,
2410                 const char *path,
2411                 const char *interface,
2412                 const char *property,
2413                 sd_bus_message *reply,
2414                 void *userdata,
2415                 sd_bus_error *error) {
2416 #if 0 /// elogind does not support EFI
2417         int r;
2418
2419         assert(bus);
2420         assert(reply);
2421         assert(userdata);
2422
2423         r = efi_get_reboot_to_firmware();
2424         if (r < 0 && r != -EOPNOTSUPP)
2425                 return r;
2426
2427         return sd_bus_message_append(reply, "b", r > 0);
2428 #else
2429         return sd_bus_message_append(reply, "b", false);
2430 #endif // 0
2431 }
2432
2433 static int method_set_reboot_to_firmware_setup(
2434                 sd_bus_message *message,
2435                 void *userdata,
2436                 sd_bus_error *error) {
2437
2438         int b, r;
2439         Manager *m = userdata;
2440
2441         assert(message);
2442         assert(m);
2443
2444         r = sd_bus_message_read(message, "b", &b);
2445         if (r < 0)
2446                 return r;
2447
2448         r = bus_verify_polkit_async(message,
2449                                     CAP_SYS_ADMIN,
2450                                     "org.freedesktop.login1.set-reboot-to-firmware-setup",
2451                                     NULL,
2452                                     false,
2453                                     UID_INVALID,
2454                                     &m->polkit_registry,
2455                                     error);
2456         if (r < 0)
2457                 return r;
2458         if (r == 0)
2459                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2460
2461 #if 0 /// elogind does not support EFI
2462         r = efi_set_reboot_to_firmware(b);
2463         if (r < 0)
2464                 return r;
2465 #endif // 0
2466
2467         return sd_bus_reply_method_return(message, NULL);
2468 }
2469
2470 static int method_can_reboot_to_firmware_setup(
2471                 sd_bus_message *message,
2472                 void *userdata,
2473                 sd_bus_error *error) {
2474
2475 #if 0 /// elogind does not support EFI
2476         int r;
2477         bool challenge;
2478         const char *result;
2479         Manager *m = userdata;
2480
2481         assert(message);
2482         assert(m);
2483
2484         r = efi_reboot_to_firmware_supported();
2485         if (r == -EOPNOTSUPP)
2486                 return sd_bus_reply_method_return(message, "s", "na");
2487         else if (r < 0)
2488                 return r;
2489
2490         r = bus_test_polkit(message,
2491                             CAP_SYS_ADMIN,
2492                             "org.freedesktop.login1.set-reboot-to-firmware-setup",
2493                             NULL,
2494                             UID_INVALID,
2495                             &challenge,
2496                             error);
2497         if (r < 0)
2498                 return r;
2499
2500         if (r > 0)
2501                 result = "yes";
2502         else if (challenge)
2503                 result = "challenge";
2504         else
2505                 result = "no";
2506
2507         return sd_bus_reply_method_return(message, "s", result);
2508 #else
2509         return sd_bus_reply_method_return(message, "s", "no");
2510 #endif // 0
2511 }
2512
2513 static int method_set_wall_message(
2514                 sd_bus_message *message,
2515                 void *userdata,
2516                 sd_bus_error *error) {
2517
2518         int r;
2519         Manager *m = userdata;
2520         char *wall_message;
2521         int enable_wall_messages;
2522
2523         assert(message);
2524         assert(m);
2525
2526         r = sd_bus_message_read(message, "sb", &wall_message, &enable_wall_messages);
2527         if (r < 0)
2528                 return r;
2529
2530 #if 0 /// elogind only calls this for shutdown/reboot, which already needs authorization.
2531         r = bus_verify_polkit_async(message,
2532                                     CAP_SYS_ADMIN,
2533                                     "org.freedesktop.login1.set-wall-message",
2534                                     NULL,
2535                                     false,
2536                                     UID_INVALID,
2537                                     &m->polkit_registry,
2538                                     error);
2539         if (r < 0)
2540                 return r;
2541         if (r == 0)
2542                 return 1; /* Will call us back */
2543 #endif // 0
2544
2545         r = free_and_strdup(&m->wall_message, empty_to_null(wall_message));
2546         if (r < 0)
2547                 return log_oom();
2548
2549         m->enable_wall_messages = enable_wall_messages;
2550
2551         return sd_bus_reply_method_return(message, NULL);
2552 }
2553
2554 static int method_inhibit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2555         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2556         const char *who, *why, *what, *mode;
2557         _cleanup_free_ char *id = NULL;
2558         _cleanup_close_ int fifo_fd = -1;
2559         Manager *m = userdata;
2560         Inhibitor *i = NULL;
2561         InhibitMode mm;
2562         InhibitWhat w;
2563         pid_t pid;
2564         uid_t uid;
2565         int r;
2566
2567         assert(message);
2568         assert(m);
2569
2570         r = sd_bus_message_read(message, "ssss", &what, &who, &why, &mode);
2571         if (r < 0)
2572                 return r;
2573
2574         w = inhibit_what_from_string(what);
2575         if (w <= 0)
2576                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid what specification %s", what);
2577
2578         mm = inhibit_mode_from_string(mode);
2579         if (mm < 0)
2580                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid mode specification %s", mode);
2581
2582         /* Delay is only supported for shutdown/sleep */
2583         if (mm == INHIBIT_DELAY && (w & ~(INHIBIT_SHUTDOWN|INHIBIT_SLEEP)))
2584                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Delay inhibitors only supported for shutdown and sleep");
2585
2586         /* Don't allow taking delay locks while we are already
2587          * executing the operation. We shouldn't create the impression
2588          * that the lock was successful if the machine is about to go
2589          * down/suspend any moment. */
2590         if (m->action_what & w)
2591                 return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS, "The operation inhibition has been requested for is already running");
2592
2593         r = bus_verify_polkit_async(
2594                         message,
2595                         CAP_SYS_BOOT,
2596                         w == INHIBIT_SHUTDOWN             ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-shutdown" : "org.freedesktop.login1.inhibit-delay-shutdown") :
2597                         w == INHIBIT_SLEEP                ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-sleep"    : "org.freedesktop.login1.inhibit-delay-sleep") :
2598                         w == INHIBIT_IDLE                 ? "org.freedesktop.login1.inhibit-block-idle" :
2599                         w == INHIBIT_HANDLE_POWER_KEY     ? "org.freedesktop.login1.inhibit-handle-power-key" :
2600                         w == INHIBIT_HANDLE_SUSPEND_KEY   ? "org.freedesktop.login1.inhibit-handle-suspend-key" :
2601                         w == INHIBIT_HANDLE_HIBERNATE_KEY ? "org.freedesktop.login1.inhibit-handle-hibernate-key" :
2602                                                             "org.freedesktop.login1.inhibit-handle-lid-switch",
2603                         NULL,
2604                         false,
2605                         UID_INVALID,
2606                         &m->polkit_registry,
2607                         error);
2608         if (r < 0)
2609                 return r;
2610         if (r == 0)
2611                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2612
2613         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID|SD_BUS_CREDS_PID, &creds);
2614         if (r < 0)
2615                 return r;
2616
2617         r = sd_bus_creds_get_euid(creds, &uid);
2618         if (r < 0)
2619                 return r;
2620
2621         r = sd_bus_creds_get_pid(creds, &pid);
2622         if (r < 0)
2623                 return r;
2624
2625         if (hashmap_size(m->inhibitors) >= m->inhibitors_max)
2626                 return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED, "Maximum number of inhibitors (%" PRIu64 ") reached, refusing further inhibitors.", m->inhibitors_max);
2627
2628         do {
2629                 id = mfree(id);
2630
2631                 if (asprintf(&id, "%lu", ++m->inhibit_counter) < 0)
2632                         return -ENOMEM;
2633
2634         } while (hashmap_get(m->inhibitors, id));
2635
2636         r = manager_add_inhibitor(m, id, &i);
2637         if (r < 0)
2638                 return r;
2639
2640         i->what = w;
2641         i->mode = mm;
2642         i->pid = pid;
2643         i->uid = uid;
2644         i->why = strdup(why);
2645         i->who = strdup(who);
2646
2647         if (!i->why || !i->who) {
2648                 r = -ENOMEM;
2649                 goto fail;
2650         }
2651
2652         fifo_fd = inhibitor_create_fifo(i);
2653         if (fifo_fd < 0) {
2654                 r = fifo_fd;
2655                 goto fail;
2656         }
2657
2658         inhibitor_start(i);
2659
2660         return sd_bus_reply_method_return(message, "h", fifo_fd);
2661
2662 fail:
2663         if (i)
2664                 inhibitor_free(i);
2665
2666         return r;
2667 }
2668
2669 const sd_bus_vtable manager_vtable[] = {
2670         SD_BUS_VTABLE_START(0),
2671
2672         SD_BUS_WRITABLE_PROPERTY("EnableWallMessages", "b", NULL, NULL, offsetof(Manager, enable_wall_messages), 0),
2673         SD_BUS_WRITABLE_PROPERTY("WallMessage", "s", NULL, NULL, offsetof(Manager, wall_message), 0),
2674
2675 #if 0 /// UNNEEDED by elogind
2676         SD_BUS_PROPERTY("NAutoVTs", "u", NULL, offsetof(Manager, n_autovts), SD_BUS_VTABLE_PROPERTY_CONST),
2677 #endif // 0
2678         SD_BUS_PROPERTY("KillOnlyUsers", "as", NULL, offsetof(Manager, kill_only_users), SD_BUS_VTABLE_PROPERTY_CONST),
2679         SD_BUS_PROPERTY("KillExcludeUsers", "as", NULL, offsetof(Manager, kill_exclude_users), SD_BUS_VTABLE_PROPERTY_CONST),
2680         SD_BUS_PROPERTY("KillUserProcesses", "b", NULL, offsetof(Manager, kill_user_processes), SD_BUS_VTABLE_PROPERTY_CONST),
2681         SD_BUS_PROPERTY("RebootToFirmwareSetup", "b", property_get_reboot_to_firmware_setup, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2682         SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
2683         SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
2684         SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
2685         SD_BUS_PROPERTY("BlockInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
2686         SD_BUS_PROPERTY("DelayInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
2687         SD_BUS_PROPERTY("InhibitDelayMaxUSec", "t", NULL, offsetof(Manager, inhibit_delay_max), SD_BUS_VTABLE_PROPERTY_CONST),
2688         SD_BUS_PROPERTY("HandlePowerKey", "s", property_get_handle_action, offsetof(Manager, handle_power_key), SD_BUS_VTABLE_PROPERTY_CONST),
2689         SD_BUS_PROPERTY("HandleSuspendKey", "s", property_get_handle_action, offsetof(Manager, handle_suspend_key), SD_BUS_VTABLE_PROPERTY_CONST),
2690         SD_BUS_PROPERTY("HandleHibernateKey", "s", property_get_handle_action, offsetof(Manager, handle_hibernate_key), SD_BUS_VTABLE_PROPERTY_CONST),
2691         SD_BUS_PROPERTY("HandleLidSwitch", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch), SD_BUS_VTABLE_PROPERTY_CONST),
2692         SD_BUS_PROPERTY("HandleLidSwitchDocked", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch_docked), SD_BUS_VTABLE_PROPERTY_CONST),
2693         SD_BUS_PROPERTY("HoldoffTimeoutUSec", "t", NULL, offsetof(Manager, holdoff_timeout_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2694         SD_BUS_PROPERTY("IdleAction", "s", property_get_handle_action, offsetof(Manager, idle_action), SD_BUS_VTABLE_PROPERTY_CONST),
2695         SD_BUS_PROPERTY("IdleActionUSec", "t", NULL, offsetof(Manager, idle_action_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2696         SD_BUS_PROPERTY("PreparingForShutdown", "b", property_get_preparing, 0, 0),
2697         SD_BUS_PROPERTY("PreparingForSleep", "b", property_get_preparing, 0, 0),
2698         SD_BUS_PROPERTY("ScheduledShutdown", "(st)", property_get_scheduled_shutdown, 0, 0),
2699         SD_BUS_PROPERTY("Docked", "b", property_get_docked, 0, 0),
2700         SD_BUS_PROPERTY("RemoveIPC", "b", bus_property_get_bool, offsetof(Manager, remove_ipc), SD_BUS_VTABLE_PROPERTY_CONST),
2701         SD_BUS_PROPERTY("RuntimeDirectorySize", "t", bus_property_get_size, offsetof(Manager, runtime_dir_size), SD_BUS_VTABLE_PROPERTY_CONST),
2702         SD_BUS_PROPERTY("InhibitorsMax", "t", NULL, offsetof(Manager, inhibitors_max), SD_BUS_VTABLE_PROPERTY_CONST),
2703         SD_BUS_PROPERTY("NCurrentInhibitors", "t", property_get_current_inhibitors, 0, 0),
2704         SD_BUS_PROPERTY("SessionsMax", "t", NULL, offsetof(Manager, sessions_max), SD_BUS_VTABLE_PROPERTY_CONST),
2705         SD_BUS_PROPERTY("NCurrentSessions", "t", property_get_current_sessions, 0, 0),
2706         SD_BUS_PROPERTY("UserTasksMax", "t", NULL, offsetof(Manager, user_tasks_max), SD_BUS_VTABLE_PROPERTY_CONST),
2707
2708         SD_BUS_METHOD("GetSession", "s", "o", method_get_session, SD_BUS_VTABLE_UNPRIVILEGED),
2709         SD_BUS_METHOD("GetSessionByPID", "u", "o", method_get_session_by_pid, SD_BUS_VTABLE_UNPRIVILEGED),
2710         SD_BUS_METHOD("GetUser", "u", "o", method_get_user, SD_BUS_VTABLE_UNPRIVILEGED),
2711         SD_BUS_METHOD("GetUserByPID", "u", "o", method_get_user_by_pid, SD_BUS_VTABLE_UNPRIVILEGED),
2712         SD_BUS_METHOD("GetSeat", "s", "o", method_get_seat, SD_BUS_VTABLE_UNPRIVILEGED),
2713         SD_BUS_METHOD("ListSessions", NULL, "a(susso)", method_list_sessions, SD_BUS_VTABLE_UNPRIVILEGED),
2714         SD_BUS_METHOD("ListUsers", NULL, "a(uso)", method_list_users, SD_BUS_VTABLE_UNPRIVILEGED),
2715         SD_BUS_METHOD("ListSeats", NULL, "a(so)", method_list_seats, SD_BUS_VTABLE_UNPRIVILEGED),
2716         SD_BUS_METHOD("ListInhibitors", NULL, "a(ssssuu)", method_list_inhibitors, SD_BUS_VTABLE_UNPRIVILEGED),
2717         SD_BUS_METHOD("CreateSession", "uusssssussbssa(sv)", "soshusub", method_create_session, 0),
2718         SD_BUS_METHOD("ReleaseSession", "s", NULL, method_release_session, 0),
2719         SD_BUS_METHOD("ActivateSession", "s", NULL, method_activate_session, SD_BUS_VTABLE_UNPRIVILEGED),
2720         SD_BUS_METHOD("ActivateSessionOnSeat", "ss", NULL, method_activate_session_on_seat, SD_BUS_VTABLE_UNPRIVILEGED),
2721         SD_BUS_METHOD("LockSession", "s", NULL, method_lock_session, SD_BUS_VTABLE_UNPRIVILEGED),
2722         SD_BUS_METHOD("UnlockSession", "s", NULL, method_lock_session, SD_BUS_VTABLE_UNPRIVILEGED),
2723         SD_BUS_METHOD("LockSessions", NULL, NULL, method_lock_sessions, SD_BUS_VTABLE_UNPRIVILEGED),
2724         SD_BUS_METHOD("UnlockSessions", NULL, NULL, method_lock_sessions, SD_BUS_VTABLE_UNPRIVILEGED),
2725         SD_BUS_METHOD("KillSession", "ssi", NULL, method_kill_session, SD_BUS_VTABLE_UNPRIVILEGED),
2726         SD_BUS_METHOD("KillUser", "ui", NULL, method_kill_user, SD_BUS_VTABLE_UNPRIVILEGED),
2727         SD_BUS_METHOD("TerminateSession", "s", NULL, method_terminate_session, SD_BUS_VTABLE_UNPRIVILEGED),
2728         SD_BUS_METHOD("TerminateUser", "u", NULL, method_terminate_user, SD_BUS_VTABLE_UNPRIVILEGED),
2729         SD_BUS_METHOD("TerminateSeat", "s", NULL, method_terminate_seat, SD_BUS_VTABLE_UNPRIVILEGED),
2730         SD_BUS_METHOD("SetUserLinger", "ubb", NULL, method_set_user_linger, SD_BUS_VTABLE_UNPRIVILEGED),
2731         SD_BUS_METHOD("AttachDevice", "ssb", NULL, method_attach_device, SD_BUS_VTABLE_UNPRIVILEGED),
2732         SD_BUS_METHOD("FlushDevices", "b", NULL, method_flush_devices, SD_BUS_VTABLE_UNPRIVILEGED),
2733         SD_BUS_METHOD("PowerOff", "b", NULL, method_poweroff, SD_BUS_VTABLE_UNPRIVILEGED),
2734         SD_BUS_METHOD("Reboot", "b", NULL, method_reboot, SD_BUS_VTABLE_UNPRIVILEGED),
2735         SD_BUS_METHOD("Halt", "b", NULL, method_halt, SD_BUS_VTABLE_UNPRIVILEGED),
2736         SD_BUS_METHOD("Suspend", "b", NULL, method_suspend, SD_BUS_VTABLE_UNPRIVILEGED),
2737         SD_BUS_METHOD("Hibernate", "b", NULL, method_hibernate, SD_BUS_VTABLE_UNPRIVILEGED),
2738         SD_BUS_METHOD("HybridSleep", "b", NULL, method_hybrid_sleep, SD_BUS_VTABLE_UNPRIVILEGED),
2739         SD_BUS_METHOD("CanPowerOff", NULL, "s", method_can_poweroff, SD_BUS_VTABLE_UNPRIVILEGED),
2740         SD_BUS_METHOD("CanReboot", NULL, "s", method_can_reboot, SD_BUS_VTABLE_UNPRIVILEGED),
2741         SD_BUS_METHOD("CanHalt", NULL, "s", method_can_halt, SD_BUS_VTABLE_UNPRIVILEGED),
2742         SD_BUS_METHOD("CanSuspend", NULL, "s", method_can_suspend, SD_BUS_VTABLE_UNPRIVILEGED),
2743         SD_BUS_METHOD("CanHibernate", NULL, "s", method_can_hibernate, SD_BUS_VTABLE_UNPRIVILEGED),
2744         SD_BUS_METHOD("CanHybridSleep", NULL, "s", method_can_hybrid_sleep, SD_BUS_VTABLE_UNPRIVILEGED),
2745         SD_BUS_METHOD("ScheduleShutdown", "st", NULL, method_schedule_shutdown, SD_BUS_VTABLE_UNPRIVILEGED),
2746         SD_BUS_METHOD("CancelScheduledShutdown", NULL, "b", method_cancel_scheduled_shutdown, SD_BUS_VTABLE_UNPRIVILEGED),
2747         SD_BUS_METHOD("Inhibit", "ssss", "h", method_inhibit, SD_BUS_VTABLE_UNPRIVILEGED),
2748         SD_BUS_METHOD("CanRebootToFirmwareSetup", NULL, "s", method_can_reboot_to_firmware_setup, SD_BUS_VTABLE_UNPRIVILEGED),
2749         SD_BUS_METHOD("SetRebootToFirmwareSetup", "b", NULL, method_set_reboot_to_firmware_setup, SD_BUS_VTABLE_UNPRIVILEGED),
2750         SD_BUS_METHOD("SetWallMessage", "sb", NULL, method_set_wall_message, SD_BUS_VTABLE_UNPRIVILEGED),
2751
2752         SD_BUS_SIGNAL("SessionNew", "so", 0),
2753         SD_BUS_SIGNAL("SessionRemoved", "so", 0),
2754         SD_BUS_SIGNAL("UserNew", "uo", 0),
2755         SD_BUS_SIGNAL("UserRemoved", "uo", 0),
2756         SD_BUS_SIGNAL("SeatNew", "so", 0),
2757         SD_BUS_SIGNAL("SeatRemoved", "so", 0),
2758         SD_BUS_SIGNAL("PrepareForShutdown", "b", 0),
2759         SD_BUS_SIGNAL("PrepareForSleep", "b", 0),
2760
2761         SD_BUS_VTABLE_END
2762 };
2763
2764 #if 0 /// UNNEEDED by elogind
2765 static int session_jobs_reply(Session *s, const char *unit, const char *result) {
2766         int r = 0;
2767
2768         assert(s);
2769         assert(unit);
2770
2771         if (!s->started)
2772                 return r;
2773
2774         if (streq(result, "done"))
2775                 r = session_send_create_reply(s, NULL);
2776         else {
2777                 _cleanup_(sd_bus_error_free) sd_bus_error e = SD_BUS_ERROR_NULL;
2778
2779                 sd_bus_error_setf(&e, BUS_ERROR_JOB_FAILED, "Start job for unit %s failed with '%s'", unit, result);
2780                 r = session_send_create_reply(s, &e);
2781         }
2782
2783         return r;
2784 }
2785
2786 int match_job_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2787         const char *path, *result, *unit;
2788         Manager *m = userdata;
2789         Session *session;
2790         uint32_t id;
2791         User *user;
2792         int r;
2793
2794         assert(message);
2795         assert(m);
2796
2797         r = sd_bus_message_read(message, "uoss", &id, &path, &unit, &result);
2798         if (r < 0) {
2799                 bus_log_parse_error(r);
2800                 return 0;
2801         }
2802
2803         if (m->action_job && streq(m->action_job, path)) {
2804                 log_info("Operation '%s' finished.", inhibit_what_to_string(m->action_what));
2805
2806                 /* Tell people that they now may take a lock again */
2807                 send_prepare_for(m, m->action_what, false);
2808
2809                 m->action_job = mfree(m->action_job);
2810                 m->action_unit = NULL;
2811                 m->action_what = 0;
2812                 return 0;
2813         }
2814
2815         session = hashmap_get(m->session_units, unit);
2816         if (session && streq_ptr(path, session->scope_job)) {
2817                 session->scope_job = mfree(session->scope_job);
2818                 session_jobs_reply(session, unit, result);
2819
2820                 session_save(session);
2821                 user_save(session->user);
2822                 session_add_to_gc_queue(session);
2823         }
2824
2825         user = hashmap_get(m->user_units, unit);
2826         if (user &&
2827             (streq_ptr(path, user->service_job) ||
2828              streq_ptr(path, user->slice_job))) {
2829
2830                 if (streq_ptr(path, user->service_job))
2831                         user->service_job = mfree(user->service_job);
2832
2833                 if (streq_ptr(path, user->slice_job))
2834                         user->slice_job = mfree(user->slice_job);
2835
2836                 LIST_FOREACH(sessions_by_user, session, user->sessions)
2837                         session_jobs_reply(session, unit, result);
2838
2839                 user_save(user);
2840                 user_add_to_gc_queue(user);
2841         }
2842
2843         return 0;
2844 }
2845
2846 int match_unit_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2847         const char *path, *unit;
2848         Manager *m = userdata;
2849         Session *session;
2850         User *user;
2851         int r;
2852
2853         assert(message);
2854         assert(m);
2855
2856         r = sd_bus_message_read(message, "so", &unit, &path);
2857         if (r < 0) {
2858                 bus_log_parse_error(r);
2859                 return 0;
2860         }
2861
2862         session = hashmap_get(m->session_units, unit);
2863         if (session)
2864                 session_add_to_gc_queue(session);
2865
2866         user = hashmap_get(m->user_units, unit);
2867         if (user)
2868                 user_add_to_gc_queue(user);
2869
2870         return 0;
2871 }
2872
2873 int match_properties_changed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2874         _cleanup_free_ char *unit = NULL;
2875         Manager *m = userdata;
2876         const char *path;
2877         Session *session;
2878         User *user;
2879         int r;
2880
2881         assert(message);
2882         assert(m);
2883
2884         path = sd_bus_message_get_path(message);
2885         if (!path)
2886                 return 0;
2887
2888         r = unit_name_from_dbus_path(path, &unit);
2889         if (r == -EINVAL) /* not a unit */
2890                 return 0;
2891         if (r < 0) {
2892                 log_oom();
2893                 return 0;
2894         }
2895
2896         session = hashmap_get(m->session_units, unit);
2897         if (session)
2898                 session_add_to_gc_queue(session);
2899
2900         user = hashmap_get(m->user_units, unit);
2901         if (user)
2902                 user_add_to_gc_queue(user);
2903
2904         return 0;
2905 }
2906
2907 int match_reloading(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2908         Manager *m = userdata;
2909         Session *session;
2910         Iterator i;
2911         int b, r;
2912
2913         assert(message);
2914         assert(m);
2915
2916         r = sd_bus_message_read(message, "b", &b);
2917         if (r < 0) {
2918                 bus_log_parse_error(r);
2919                 return 0;
2920         }
2921
2922         if (b)
2923                 return 0;
2924
2925         /* systemd finished reloading, let's recheck all our sessions */
2926         log_debug("System manager has been reloaded, rechecking sessions...");
2927
2928         HASHMAP_FOREACH(session, m->sessions, i)
2929                 session_add_to_gc_queue(session);
2930
2931         return 0;
2932 }
2933 #endif // 0
2934
2935 int manager_send_changed(Manager *manager, const char *property, ...) {
2936         char **l;
2937
2938         assert(manager);
2939
2940         l = strv_from_stdarg_alloca(property);
2941
2942         return sd_bus_emit_properties_changed_strv(
2943                         manager->bus,
2944                         "/org/freedesktop/login1",
2945                         "org.freedesktop.login1.Manager",
2946                         l);
2947 }
2948
2949 #if 0 /// UNNEEDED by elogind
2950 static int strdup_job(sd_bus_message *reply, char **job) {
2951         const char *j;
2952         char *copy;
2953         int r;
2954
2955         r = sd_bus_message_read(reply, "o", &j);
2956         if (r < 0)
2957                 return r;
2958
2959         copy = strdup(j);
2960         if (!copy)
2961                 return -ENOMEM;
2962
2963         *job = copy;
2964         return 1;
2965 }
2966
2967 int manager_start_slice(
2968                 Manager *manager,
2969                 const char *slice,
2970                 const char *description,
2971                 const char *after,
2972                 const char *after2,
2973                 uint64_t tasks_max,
2974                 sd_bus_error *error,
2975                 char **job) {
2976
2977         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
2978         int r;
2979
2980         assert(manager);
2981         assert(slice);
2982         assert(job);
2983
2984         r = sd_bus_message_new_method_call(
2985                         manager->bus,
2986                         &m,
2987                         "org.freedesktop.systemd1",
2988                         "/org/freedesktop/systemd1",
2989                         "org.freedesktop.systemd1.Manager",
2990                         "StartTransientUnit");
2991         if (r < 0)
2992                 return r;
2993
2994         r = sd_bus_message_append(m, "ss", strempty(slice), "fail");
2995         if (r < 0)
2996                 return r;
2997
2998         r = sd_bus_message_open_container(m, 'a', "(sv)");
2999         if (r < 0)
3000                 return r;
3001
3002         if (!isempty(description)) {
3003                 r = sd_bus_message_append(m, "(sv)", "Description", "s", description);
3004                 if (r < 0)
3005                         return r;
3006         }
3007
3008         if (!isempty(after)) {
3009                 r = sd_bus_message_append(m, "(sv)", "After", "as", 1, after);
3010                 if (r < 0)
3011                         return r;
3012         }
3013
3014         if (!isempty(after2)) {
3015                 r = sd_bus_message_append(m, "(sv)", "After", "as", 1, after2);
3016                 if (r < 0)
3017                         return r;
3018         }
3019
3020         r = sd_bus_message_append(m, "(sv)", "TasksMax", "t", tasks_max);
3021         if (r < 0)
3022                 return r;
3023
3024         r = sd_bus_message_close_container(m);
3025         if (r < 0)
3026                 return r;
3027
3028         r = sd_bus_message_append(m, "a(sa(sv))", 0);
3029         if (r < 0)
3030                 return r;
3031
3032         r = sd_bus_call(manager->bus, m, 0, error, &reply);
3033         if (r < 0)
3034                 return r;
3035
3036         return strdup_job(reply, job);
3037 }
3038
3039 int manager_start_scope(
3040                 Manager *manager,
3041                 const char *scope,
3042                 pid_t pid,
3043                 const char *slice,
3044                 const char *description,
3045                 const char *after,
3046                 const char *after2,
3047                 uint64_t tasks_max,
3048                 sd_bus_error *error,
3049                 char **job) {
3050
3051         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
3052         int r;
3053
3054         assert(manager);
3055         assert(scope);
3056         assert(pid > 1);
3057         assert(job);
3058
3059         r = sd_bus_message_new_method_call(
3060                         manager->bus,
3061                         &m,
3062                         "org.freedesktop.systemd1",
3063                         "/org/freedesktop/systemd1",
3064                         "org.freedesktop.systemd1.Manager",
3065                         "StartTransientUnit");
3066         if (r < 0)
3067                 return r;
3068
3069         r = sd_bus_message_append(m, "ss", strempty(scope), "fail");
3070         if (r < 0)
3071                 return r;
3072
3073         r = sd_bus_message_open_container(m, 'a', "(sv)");
3074         if (r < 0)
3075                 return r;
3076
3077         if (!isempty(slice)) {
3078                 r = sd_bus_message_append(m, "(sv)", "Slice", "s", slice);
3079                 if (r < 0)
3080                         return r;
3081         }
3082
3083         if (!isempty(description)) {
3084                 r = sd_bus_message_append(m, "(sv)", "Description", "s", description);
3085                 if (r < 0)
3086                         return r;
3087         }
3088
3089         if (!isempty(after)) {
3090                 r = sd_bus_message_append(m, "(sv)", "After", "as", 1, after);
3091                 if (r < 0)
3092                         return r;
3093         }
3094
3095         if (!isempty(after2)) {
3096                 r = sd_bus_message_append(m, "(sv)", "After", "as", 1, after2);
3097                 if (r < 0)
3098                         return r;
3099         }
3100
3101         /* cgroup empty notification is not available in containers
3102          * currently. To make this less problematic, let's shorten the
3103          * stop timeout for sessions, so that we don't wait
3104          * forever. */
3105
3106         /* Make sure that the session shells are terminated with
3107          * SIGHUP since bash and friends tend to ignore SIGTERM */
3108         r = sd_bus_message_append(m, "(sv)", "SendSIGHUP", "b", true);
3109         if (r < 0)
3110                 return r;
3111
3112         r = sd_bus_message_append(m, "(sv)", "PIDs", "au", 1, pid);
3113         if (r < 0)
3114                 return r;
3115
3116         r = sd_bus_message_append(m, "(sv)", "TasksMax", "t", tasks_max);
3117         if (r < 0)
3118                 return r;
3119
3120         r = sd_bus_message_close_container(m);
3121         if (r < 0)
3122                 return r;
3123
3124         r = sd_bus_message_append(m, "a(sa(sv))", 0);
3125         if (r < 0)
3126                 return r;
3127
3128         r = sd_bus_call(manager->bus, m, 0, error, &reply);
3129         if (r < 0)
3130                 return r;
3131
3132         return strdup_job(reply, job);
3133 }
3134
3135 int manager_start_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) {
3136         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
3137         int r;
3138
3139         assert(manager);
3140         assert(unit);
3141         assert(job);
3142
3143         r = sd_bus_call_method(
3144                         manager->bus,
3145                         "org.freedesktop.systemd1",
3146                         "/org/freedesktop/systemd1",
3147                         "org.freedesktop.systemd1.Manager",
3148                         "StartUnit",
3149                         error,
3150                         &reply,
3151                         "ss", unit, "replace");
3152         if (r < 0)
3153                 return r;
3154
3155         return strdup_job(reply, job);
3156 }
3157
3158 int manager_stop_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) {
3159         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
3160         int r;
3161
3162         assert(manager);
3163         assert(unit);
3164         assert(job);
3165
3166         r = sd_bus_call_method(
3167                         manager->bus,
3168                         "org.freedesktop.systemd1",
3169                         "/org/freedesktop/systemd1",
3170                         "org.freedesktop.systemd1.Manager",
3171                         "StopUnit",
3172                         error,
3173                         &reply,
3174                         "ss", unit, "fail");
3175         if (r < 0) {
3176                 if (sd_bus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT) ||
3177                     sd_bus_error_has_name(error, BUS_ERROR_LOAD_FAILED)) {
3178
3179                         *job = NULL;
3180                         sd_bus_error_free(error);
3181                         return 0;
3182                 }
3183
3184                 return r;
3185         }
3186
3187         return strdup_job(reply, job);
3188 }
3189
3190 int manager_abandon_scope(Manager *manager, const char *scope, sd_bus_error *error) {
3191         _cleanup_free_ char *path = NULL;
3192         int r;
3193
3194         assert(manager);
3195         assert(scope);
3196
3197         path = unit_dbus_path_from_name(scope);
3198         if (!path)
3199                 return -ENOMEM;
3200
3201         r = sd_bus_call_method(
3202                         manager->bus,
3203                         "org.freedesktop.systemd1",
3204                         path,
3205                         "org.freedesktop.systemd1.Scope",
3206                         "Abandon",
3207                         error,
3208                         NULL,
3209                         NULL);
3210         if (r < 0) {
3211                 if (sd_bus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT) ||
3212                     sd_bus_error_has_name(error, BUS_ERROR_LOAD_FAILED) ||
3213                     sd_bus_error_has_name(error, BUS_ERROR_SCOPE_NOT_RUNNING)) {
3214                         sd_bus_error_free(error);
3215                         return 0;
3216                 }
3217
3218                 return r;
3219         }
3220
3221         return 1;
3222 }
3223
3224 int manager_kill_unit(Manager *manager, const char *unit, KillWho who, int signo, sd_bus_error *error) {
3225         assert(manager);
3226         assert(unit);
3227
3228         return sd_bus_call_method(
3229                         manager->bus,
3230                         "org.freedesktop.systemd1",
3231                         "/org/freedesktop/systemd1",
3232                         "org.freedesktop.systemd1.Manager",
3233                         "KillUnit",
3234                         error,
3235                         NULL,
3236                         "ssi", unit, who == KILL_LEADER ? "main" : "all", signo);
3237 }
3238
3239 int manager_unit_is_active(Manager *manager, const char *unit) {
3240         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
3241         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
3242         _cleanup_free_ char *path = NULL;
3243         const char *state;
3244         int r;
3245
3246         assert(manager);
3247         assert(unit);
3248
3249         path = unit_dbus_path_from_name(unit);
3250         if (!path)
3251                 return -ENOMEM;
3252
3253         r = sd_bus_get_property(
3254                         manager->bus,
3255                         "org.freedesktop.systemd1",
3256                         path,
3257                         "org.freedesktop.systemd1.Unit",
3258                         "ActiveState",
3259                         &error,
3260                         &reply,
3261                         "s");
3262         if (r < 0) {
3263                 /* systemd might have droppped off momentarily, let's
3264                  * not make this an error */
3265                 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_NO_REPLY) ||
3266                     sd_bus_error_has_name(&error, SD_BUS_ERROR_DISCONNECTED))
3267                         return true;
3268
3269                 /* If the unit is already unloaded then it's not
3270                  * active */
3271                 if (sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_UNIT) ||
3272                     sd_bus_error_has_name(&error, BUS_ERROR_LOAD_FAILED))
3273                         return false;
3274
3275                 return r;
3276         }
3277
3278         r = sd_bus_message_read(reply, "s", &state);
3279         if (r < 0)
3280                 return -EINVAL;
3281
3282         return !streq(state, "inactive") && !streq(state, "failed");
3283 }
3284
3285 int manager_job_is_active(Manager *manager, const char *path) {
3286         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
3287         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
3288         int r;
3289
3290         assert(manager);
3291         assert(path);
3292
3293         r = sd_bus_get_property(
3294                         manager->bus,
3295                         "org.freedesktop.systemd1",
3296                         path,
3297                         "org.freedesktop.systemd1.Job",
3298                         "State",
3299                         &error,
3300                         &reply,
3301                         "s");
3302         if (r < 0) {
3303                 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_NO_REPLY) ||
3304                     sd_bus_error_has_name(&error, SD_BUS_ERROR_DISCONNECTED))
3305                         return true;
3306
3307                 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_OBJECT))
3308                         return false;
3309
3310                 return r;
3311         }
3312
3313         /* We don't actually care about the state really. The fact
3314          * that we could read the job state is enough for us */
3315
3316         return true;
3317 }
3318 #endif // 0