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