src/login/logind-dbus.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 /***
   3   This file is part of systemd.
   4
   5   Copyright 2011 Lennart Poettering
   6
   7   systemd is free software; you can redistribute it and/or modify it
   8   under the terms of the GNU Lesser General Public License as published by
   9   the Free Software Foundation; either version 2.1 of the License, or
  10   (at your option) any later version.
  11
  12   systemd is distributed in the hope that it will be useful, but
  13   WITHOUT ANY WARRANTY; without even the implied warranty of
  14   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  15   Lesser General Public License for more details.
  16
  17   You should have received a copy of the GNU Lesser General Public License
  18   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  19 ***/
  20
  21 #include <errno.h>
  22 #include <pwd.h>
  23 #include <string.h>
  24 #include <unistd.h>
  25
  26 #include "sd-messages.h"
  27
  28 #include "alloc-util.h"
  29 #include "audit-util.h"
  30 #include "bus-common-errors.h"
  31 #include "bus-error.h"
  32 #include "bus-util.h"
  33 #include "dirent-util.h"
  34 //#include "efivars.h"
  35 #include "escape.h"
  36 #include "fd-util.h"
  37 #include "fileio-label.h"
  38 #include "format-util.h"
  39 #include "fs-util.h"
  40 #include "logind.h"
  41 #include "mkdir.h"
  42 #include "path-util.h"
  43 #include "process-util.h"
  44 //#include "cgroup-util.h"
  45 #include "selinux-util.h"
  46 #include "sleep-config.h"
  47 //#include "special.h"
  48 #include "strv.h"
  49 #include "terminal-util.h"
  50 #include "udev-util.h"
  51 #include "unit-name.h"
  52 #include "user-util.h"
  53 #include "utmp-wtmp.h"
  54
  55 /// Additional includes needed by elogind
  56 #include "elogind-dbus.h"
  57
  58 static int get_sender_session(Manager *m, sd_bus_message *message, sd_bus_error *error, Session **ret) {
  59
  60         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
  61         const char *name;
  62         Session *session;
  63         int r;
  64
  65         /* Get client login session.  This is not what you are looking for these days,
  66          * as apps may instead belong to a user service unit.  This includes terminal
  67          * emulators and hence command-line apps. */
  68         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_SESSION|SD_BUS_CREDS_AUGMENT, &creds);
  69         if (r < 0)
  70                 return r;
  71
  72         r = sd_bus_creds_get_session(creds, &name);
  73         if (r == -ENXIO)
  74                 goto err_no_session;
  75         if (r < 0)
  76                 return r;
  77
  78         session = hashmap_get(m->sessions, name);
  79         if (!session)
  80                 goto err_no_session;
  81
  82         *ret = session;
  83         return 0;
  84
  85 err_no_session:
  86         return sd_bus_error_setf(error, BUS_ERROR_NO_SESSION_FOR_PID,
  87                                  "Caller does not belong to any known session");
  88 }
  89
  90 int manager_get_session_from_creds(Manager *m, sd_bus_message *message, const char *name, sd_bus_error *error, Session **ret) {
  91         Session *session;
  92
  93         assert(m);
  94         assert(message);
  95         assert(ret);
  96
  97         if (isempty(name))
  98                 return get_sender_session(m, message, error, ret);
  99
 100         session = hashmap_get(m->sessions, name);
 101         if (!session)
 102                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SESSION, "No session '%s' known", name);
 103
 104         *ret = session;
 105         return 0;
 106 }
 107
 108 static int get_sender_user(Manager *m, sd_bus_message *message, sd_bus_error *error, User **ret) {
 109
 110         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 111         uid_t uid;
 112         User *user;
 113         int r;
 114
 115         /* Note that we get the owner UID of the session, not the actual client UID here! */
 116         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds);
 117         if (r < 0)
 118                 return r;
 119
 120         r = sd_bus_creds_get_owner_uid(creds, &uid);
 121         if (r == -ENXIO)
 122                 goto err_no_user;
 123         if (r < 0)
 124                 return r;
 125
 126         user = hashmap_get(m->users, UID_TO_PTR(uid));
 127         if (!user)
 128                 goto err_no_user;
 129
 130         *ret = user;
 131         return 0;
 132
 133 err_no_user:
 134         return sd_bus_error_setf(error, BUS_ERROR_NO_USER_FOR_PID, "Caller does not belong to any logged in user or lingering user");
 135 }
 136
 137 int manager_get_user_from_creds(Manager *m, sd_bus_message *message, uid_t uid, sd_bus_error *error, User **ret) {
 138         User *user;
 139
 140         assert(m);
 141         assert(message);
 142         assert(ret);
 143
 144         if (!uid_is_valid(uid))
 145                 return get_sender_user(m, message, error, ret);
 146
 147         user = hashmap_get(m->users, UID_TO_PTR(uid));
 148         if (!user)
 149                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_USER, "User ID "UID_FMT" is not logged in or lingering", uid);
 150
 151         *ret = user;
 152         return 0;
 153 }
 154
 155 int manager_get_seat_from_creds(Manager *m, sd_bus_message *message, const char *name, sd_bus_error *error, Seat **ret) {
 156         Seat *seat;
 157         int r;
 158
 159         assert(m);
 160         assert(message);
 161         assert(ret);
 162
 163         if (isempty(name)) {
 164                 Session *session;
 165
 166                 r = manager_get_session_from_creds(m, message, NULL, error, &session);
 167                 if (r < 0)
 168                         return r;
 169
 170                 seat = session->seat;
 171                 if (!seat)
 172                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "Session has no seat.");
 173         } else {
 174                 seat = hashmap_get(m->seats, name);
 175                 if (!seat)
 176                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "No seat '%s' known", name);
 177         }
 178
 179         *ret = seat;
 180         return 0;
 181 }
 182
 183 static int property_get_idle_hint(
 184                 sd_bus *bus,
 185                 const char *path,
 186                 const char *interface,
 187                 const char *property,
 188                 sd_bus_message *reply,
 189                 void *userdata,
 190                 sd_bus_error *error) {
 191
 192         Manager *m = userdata;
 193
 194         assert(bus);
 195         assert(reply);
 196         assert(m);
 197
 198         return sd_bus_message_append(reply, "b", manager_get_idle_hint(m, NULL) > 0);
 199 }
 200
 201 static int property_get_idle_since_hint(
 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         dual_timestamp t = DUAL_TIMESTAMP_NULL;
 212
 213         assert(bus);
 214         assert(reply);
 215         assert(m);
 216
 217         manager_get_idle_hint(m, &t);
 218
 219         return sd_bus_message_append(reply, "t", streq(property, "IdleSinceHint") ? t.realtime : t.monotonic);
 220 }
 221
 222 static int property_get_inhibited(
 223                 sd_bus *bus,
 224                 const char *path,
 225                 const char *interface,
 226                 const char *property,
 227                 sd_bus_message *reply,
 228                 void *userdata,
 229                 sd_bus_error *error) {
 230
 231         Manager *m = userdata;
 232         InhibitWhat w;
 233
 234         assert(bus);
 235         assert(reply);
 236         assert(m);
 237
 238         w = manager_inhibit_what(m, streq(property, "BlockInhibited") ? INHIBIT_BLOCK : INHIBIT_DELAY);
 239
 240         return sd_bus_message_append(reply, "s", inhibit_what_to_string(w));
 241 }
 242
 243 static int property_get_preparing(
 244                 sd_bus *bus,
 245                 const char *path,
 246                 const char *interface,
 247                 const char *property,
 248                 sd_bus_message *reply,
 249                 void *userdata,
 250                 sd_bus_error *error) {
 251
 252         Manager *m = userdata;
 253         bool b;
 254
 255         assert(bus);
 256         assert(reply);
 257         assert(m);
 258
 259         if (streq(property, "PreparingForShutdown"))
 260                 b = !!(m->action_what & INHIBIT_SHUTDOWN);
 261         else
 262                 b = !!(m->action_what & INHIBIT_SLEEP);
 263
 264         return sd_bus_message_append(reply, "b", b);
 265 }
 266
 267 static int property_get_scheduled_shutdown(
 268                 sd_bus *bus,
 269                 const char *path,
 270                 const char *interface,
 271                 const char *property,
 272                 sd_bus_message *reply,
 273                 void *userdata,
 274                 sd_bus_error *error) {
 275
 276         Manager *m = userdata;
 277         int r;
 278
 279         assert(bus);
 280         assert(reply);
 281         assert(m);
 282
 283         r = sd_bus_message_open_container(reply, 'r', "st");
 284         if (r < 0)
 285                 return r;
 286
 287         r = sd_bus_message_append(reply, "st", m->scheduled_shutdown_type, m->scheduled_shutdown_timeout);
 288         if (r < 0)
 289                 return r;
 290
 291         return sd_bus_message_close_container(reply);
 292 }
 293
 294 static BUS_DEFINE_PROPERTY_GET_ENUM(property_get_handle_action, handle_action, HandleAction);
 295
 296 static int property_get_docked(
 297                 sd_bus *bus,
 298                 const char *path,
 299                 const char *interface,
 300                 const char *property,
 301                 sd_bus_message *reply,
 302                 void *userdata,
 303                 sd_bus_error *error) {
 304
 305         Manager *m = userdata;
 306
 307         assert(bus);
 308         assert(reply);
 309         assert(m);
 310
 311         return sd_bus_message_append(reply, "b", manager_is_docked_or_external_displays(m));
 312 }
 313
 314 static int property_get_current_sessions(
 315                 sd_bus *bus,
 316                 const char *path,
 317                 const char *interface,
 318                 const char *property,
 319                 sd_bus_message *reply,
 320                 void *userdata,
 321                 sd_bus_error *error) {
 322
 323         Manager *m = userdata;
 324
 325         assert(bus);
 326         assert(reply);
 327         assert(m);
 328
 329         return sd_bus_message_append(reply, "t", (uint64_t) hashmap_size(m->sessions));
 330 }
 331
 332 static int property_get_current_inhibitors(
 333                 sd_bus *bus,
 334                 const char *path,
 335                 const char *interface,
 336                 const char *property,
 337                 sd_bus_message *reply,
 338                 void *userdata,
 339                 sd_bus_error *error) {
 340
 341         Manager *m = userdata;
 342
 343         assert(bus);
 344         assert(reply);
 345         assert(m);
 346
 347         return sd_bus_message_append(reply, "t", (uint64_t) hashmap_size(m->inhibitors));
 348 }
 349
 350 static int method_get_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 351         _cleanup_free_ char *p = NULL;
 352         Manager *m = userdata;
 353         const char *name;
 354         Session *session;
 355         int r;
 356
 357         assert(message);
 358         assert(m);
 359
 360         r = sd_bus_message_read(message, "s", &name);
 361         if (r < 0)
 362                 return r;
 363
 364         r = manager_get_session_from_creds(m, message, name, error, &session);
 365         if (r < 0)
 366                 return r;
 367
 368         p = session_bus_path(session);
 369         if (!p)
 370                 return -ENOMEM;
 371
 372         return sd_bus_reply_method_return(message, "o", p);
 373 }
 374
 375 /* Get login session of a process.  This is not what you are looking for these days,
 376  * as apps may instead belong to a user service unit.  This includes terminal
 377  * emulators and hence command-line apps. */
 378 static int method_get_session_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 379         _cleanup_free_ char *p = NULL;
 380         Session *session = NULL;
 381         Manager *m = userdata;
 382         pid_t pid;
 383         int r;
 384
 385         assert(message);
 386         assert(m);
 387
 388         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 389
 390         r = sd_bus_message_read(message, "u", &pid);
 391         if (r < 0)
 392                 return r;
 393         if (pid < 0)
 394                 return -EINVAL;
 395
 396         if (pid == 0) {
 397                 r = manager_get_session_from_creds(m, message, NULL, error, &session);
 398                 if (r < 0)
 399                         return r;
 400         } else {
 401                 r = manager_get_session_by_pid(m, pid, &session);
 402                 if (r < 0)
 403                         return r;
 404
 405                 if (!session)
 406                         return sd_bus_error_setf(error, BUS_ERROR_NO_SESSION_FOR_PID, "PID "PID_FMT" does not belong to any known session", pid);
 407         }
 408
 409         p = session_bus_path(session);
 410         if (!p)
 411                 return -ENOMEM;
 412
 413         return sd_bus_reply_method_return(message, "o", p);
 414 }
 415
 416 static int method_get_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 417         _cleanup_free_ char *p = NULL;
 418         Manager *m = userdata;
 419         uint32_t uid;
 420         User *user;
 421         int r;
 422
 423         assert(message);
 424         assert(m);
 425
 426         r = sd_bus_message_read(message, "u", &uid);
 427         if (r < 0)
 428                 return r;
 429
 430         r = manager_get_user_from_creds(m, message, uid, error, &user);
 431         if (r < 0)
 432                 return r;
 433
 434         p = user_bus_path(user);
 435         if (!p)
 436                 return -ENOMEM;
 437
 438         return sd_bus_reply_method_return(message, "o", p);
 439 }
 440
 441 static int method_get_user_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 442         _cleanup_free_ char *p = NULL;
 443         Manager *m = userdata;
 444         User *user = NULL;
 445         pid_t pid;
 446         int r;
 447
 448         assert(message);
 449         assert(m);
 450
 451         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 452
 453         r = sd_bus_message_read(message, "u", &pid);
 454         if (r < 0)
 455                 return r;
 456         if (pid < 0)
 457                 return -EINVAL;
 458
 459         if (pid == 0) {
 460                 r = manager_get_user_from_creds(m, message, UID_INVALID, error, &user);
 461                 if (r < 0)
 462                         return r;
 463         } else {
 464                 r = manager_get_user_by_pid(m, pid, &user);
 465                 if (r < 0)
 466                         return r;
 467                 if (!user)
 468                         return sd_bus_error_setf(error, BUS_ERROR_NO_USER_FOR_PID,
 469                                                  "PID "PID_FMT" does not belong to any logged in user or lingering user",
 470                                                  pid);
 471         }
 472
 473         p = user_bus_path(user);
 474         if (!p)
 475                 return -ENOMEM;
 476
 477         return sd_bus_reply_method_return(message, "o", p);
 478 }
 479
 480 static int method_get_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 481         _cleanup_free_ char *p = NULL;
 482         Manager *m = userdata;
 483         const char *name;
 484         Seat *seat;
 485         int r;
 486
 487         assert(message);
 488         assert(m);
 489
 490         r = sd_bus_message_read(message, "s", &name);
 491         if (r < 0)
 492                 return r;
 493
 494         r = manager_get_seat_from_creds(m, message, name, error, &seat);
 495         if (r < 0)
 496                 return r;
 497
 498         p = seat_bus_path(seat);
 499         if (!p)
 500                 return -ENOMEM;
 501
 502         return sd_bus_reply_method_return(message, "o", p);
 503 }
 504
 505 static int method_list_sessions(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 506         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 507         Manager *m = userdata;
 508         Session *session;
 509         Iterator i;
 510         int r;
 511
 512         assert(message);
 513         assert(m);
 514
 515         r = sd_bus_message_new_method_return(message, &reply);
 516         if (r < 0)
 517                 return r;
 518
 519         r = sd_bus_message_open_container(reply, 'a', "(susso)");
 520         if (r < 0)
 521                 return r;
 522
 523         HASHMAP_FOREACH(session, m->sessions, i) {
 524                 _cleanup_free_ char *p = NULL;
 525
 526                 p = session_bus_path(session);
 527                 if (!p)
 528                         return -ENOMEM;
 529
 530                 r = sd_bus_message_append(reply, "(susso)",
 531                                           session->id,
 532                                           (uint32_t) session->user->uid,
 533                                           session->user->name,
 534                                           session->seat ? session->seat->id : "",
 535                                           p);
 536                 if (r < 0)
 537                         return r;
 538         }
 539
 540         r = sd_bus_message_close_container(reply);
 541         if (r < 0)
 542                 return r;
 543
 544         return sd_bus_send(NULL, reply, NULL);
 545 }
 546
 547 static int method_list_users(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 548         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 549         Manager *m = userdata;
 550         User *user;
 551         Iterator i;
 552         int r;
 553
 554         assert(message);
 555         assert(m);
 556
 557         r = sd_bus_message_new_method_return(message, &reply);
 558         if (r < 0)
 559                 return r;
 560
 561         r = sd_bus_message_open_container(reply, 'a', "(uso)");
 562         if (r < 0)
 563                 return r;
 564
 565         HASHMAP_FOREACH(user, m->users, i) {
 566                 _cleanup_free_ char *p = NULL;
 567
 568                 p = user_bus_path(user);
 569                 if (!p)
 570                         return -ENOMEM;
 571
 572                 r = sd_bus_message_append(reply, "(uso)",
 573                                           (uint32_t) user->uid,
 574                                           user->name,
 575                                           p);
 576                 if (r < 0)
 577                         return r;
 578         }
 579
 580         r = sd_bus_message_close_container(reply);
 581         if (r < 0)
 582                 return r;
 583
 584         return sd_bus_send(NULL, reply, NULL);
 585 }
 586
 587 static int method_list_seats(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 588         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 589         Manager *m = userdata;
 590         Seat *seat;
 591         Iterator i;
 592         int r;
 593
 594         assert(message);
 595         assert(m);
 596
 597         r = sd_bus_message_new_method_return(message, &reply);
 598         if (r < 0)
 599                 return r;
 600
 601         r = sd_bus_message_open_container(reply, 'a', "(so)");
 602         if (r < 0)
 603                 return r;
 604
 605         HASHMAP_FOREACH(seat, m->seats, i) {
 606                 _cleanup_free_ char *p = NULL;
 607
 608                 p = seat_bus_path(seat);
 609                 if (!p)
 610                         return -ENOMEM;
 611
 612                 r = sd_bus_message_append(reply, "(so)", seat->id, p);
 613                 if (r < 0)
 614                         return r;
 615         }
 616
 617         r = sd_bus_message_close_container(reply);
 618         if (r < 0)
 619                 return r;
 620
 621         return sd_bus_send(NULL, reply, NULL);
 622 }
 623
 624 static int method_list_inhibitors(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 625         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 626         Manager *m = userdata;
 627         Inhibitor *inhibitor;
 628         Iterator i;
 629         int r;
 630
 631         assert(message);
 632         assert(m);
 633
 634         r = sd_bus_message_new_method_return(message, &reply);
 635         if (r < 0)
 636                 return r;
 637
 638         r = sd_bus_message_open_container(reply, 'a', "(ssssuu)");
 639         if (r < 0)
 640                 return r;
 641
 642         HASHMAP_FOREACH(inhibitor, m->inhibitors, i) {
 643
 644                 r = sd_bus_message_append(reply, "(ssssuu)",
 645                                           strempty(inhibit_what_to_string(inhibitor->what)),
 646                                           strempty(inhibitor->who),
 647                                           strempty(inhibitor->why),
 648                                           strempty(inhibit_mode_to_string(inhibitor->mode)),
 649                                           (uint32_t) inhibitor->uid,
 650                                           (uint32_t) inhibitor->pid);
 651                 if (r < 0)
 652                         return r;
 653         }
 654
 655         r = sd_bus_message_close_container(reply);
 656         if (r < 0)
 657                 return r;
 658
 659         return sd_bus_send(NULL, reply, NULL);
 660 }
 661
 662 static int method_create_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 663         const char *service, *type, *class, *cseat, *tty, *display, *remote_user, *remote_host, *desktop;
 664         uint32_t audit_id = 0;
 665         _cleanup_free_ char *unit = NULL;
 666         _cleanup_free_ char *id = NULL;
 667         Session *session = NULL;
 668         Manager *m = userdata;
 669         User *user = NULL;
 670         Seat *seat = NULL;
 671         pid_t leader;
 672         uid_t uid;
 673         int remote;
 674         uint32_t vtnr = 0;
 675         SessionType t;
 676         SessionClass c;
 677         int r;
 678
 679         assert(message);
 680         assert(m);
 681
 682         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 683         assert_cc(sizeof(uid_t) == sizeof(uint32_t));
 684
 685         r = sd_bus_message_read(message, "uusssssussbss", &uid, &leader, &service, &type, &class, &desktop, &cseat, &vtnr, &tty, &display, &remote, &remote_user, &remote_host);
 686         if (r < 0)
 687                 return r;
 688
 689         if (!uid_is_valid(uid))
 690                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid UID");
 691         if (leader < 0 || leader == 1)
 692                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid leader PID");
 693
 694         if (isempty(type))
 695                 t = _SESSION_TYPE_INVALID;
 696         else {
 697                 t = session_type_from_string(type);
 698                 if (t < 0)
 699                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid session type %s", type);
 700         }
 701
 702         if (isempty(class))
 703                 c = _SESSION_CLASS_INVALID;
 704         else {
 705                 c = session_class_from_string(class);
 706                 if (c < 0)
 707                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid session class %s", class);
 708         }
 709
 710         if (isempty(desktop))
 711                 desktop = NULL;
 712         else {
 713                 if (!string_is_safe(desktop))
 714                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid desktop string %s", desktop);
 715         }
 716
 717         if (isempty(cseat))
 718                 seat = NULL;
 719         else {
 720                 seat = hashmap_get(m->seats, cseat);
 721                 if (!seat)
 722                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_SEAT, "No seat '%s' known", cseat);
 723         }
 724
 725         if (tty_is_vc(tty)) {
 726                 int v;
 727
 728                 if (!seat)
 729                         seat = m->seat0;
 730                 else if (seat != m->seat0)
 731                         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);
 732
 733                 v = vtnr_from_tty(tty);
 734                 if (v <= 0)
 735                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Cannot determine VT number from virtual console TTY %s", tty);
 736
 737                 if (!vtnr)
 738                         vtnr = (uint32_t) v;
 739                 else if (vtnr != (uint32_t) v)
 740                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Specified TTY and VT number do not match");
 741
 742         } else if (tty_is_console(tty)) {
 743
 744                 if (!seat)
 745                         seat = m->seat0;
 746                 else if (seat != m->seat0)
 747                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Console TTY specified but seat is not seat0");
 748
 749                 if (vtnr != 0)
 750                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Console TTY specified but VT number is not 0");
 751         }
 752
 753         if (seat) {
 754                 if (seat_has_vts(seat)) {
 755                         if (!vtnr || vtnr > 63)
 756                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "VT number out of range");
 757                 } else {
 758                         if (vtnr != 0)
 759                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Seat has no VTs but VT number not 0");
 760                 }
 761         }
 762
 763         r = sd_bus_message_enter_container(message, 'a', "(sv)");
 764         if (r < 0)
 765                 return r;
 766
 767         if (t == _SESSION_TYPE_INVALID) {
 768                 if (!isempty(display))
 769                         t = SESSION_X11;
 770                 else if (!isempty(tty))
 771                         t = SESSION_TTY;
 772                 else
 773                         t = SESSION_UNSPECIFIED;
 774         }
 775
 776         if (c == _SESSION_CLASS_INVALID) {
 777                 if (t == SESSION_UNSPECIFIED)
 778                         c = SESSION_BACKGROUND;
 779                 else
 780                         c = SESSION_USER;
 781         }
 782
 783         if (leader == 0) {
 784                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 785
 786                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 787                 if (r < 0)
 788                         return r;
 789
 790                 r = sd_bus_creds_get_pid(creds, (pid_t*) &leader);
 791                 if (r < 0)
 792                         return r;
 793         }
 794
 795         /*
 796          * Check if we are already in a logind session.  Or if we are in user@.service
 797          * which is a special PAM session that avoids creating a logind session.
 798          */
 799         r = cg_pid_get_unit(leader, &unit);
 800         if (r < 0)
 801                 return r;
 802         if (hashmap_get(m->session_units, unit) ||
 803             hashmap_get(m->user_units, unit))
 804                 return sd_bus_error_setf(error, BUS_ERROR_SESSION_BUSY, "Already running in a session");
 805
 806         /*
 807          * Old gdm and lightdm start the user-session on the same VT as
 808          * the greeter session. But they destroy the greeter session
 809          * after the user-session and want the user-session to take
 810          * over the VT. We need to support this for
 811          * backwards-compatibility, so make sure we allow new sessions
 812          * on a VT that a greeter is running on. Furthermore, to allow
 813          * re-logins, we have to allow a greeter to take over a used VT for
 814          * the exact same reasons.
 815          */
 816         if (c != SESSION_GREETER &&
 817             vtnr > 0 &&
 818             vtnr < m->seat0->position_count &&
 819             m->seat0->positions[vtnr] &&
 820             m->seat0->positions[vtnr]->class != SESSION_GREETER)
 821                 return sd_bus_error_setf(error, BUS_ERROR_SESSION_BUSY, "Already occupied by a session");
 822
 823         if (hashmap_size(m->sessions) >= m->sessions_max)
 824                 return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED, "Maximum number of sessions (%" PRIu64 ") reached, refusing further sessions.", m->sessions_max);
 825
 826         (void) audit_session_from_pid(leader, &audit_id);
 827         if (audit_session_is_valid(audit_id)) {
 828                 /* Keep our session IDs and the audit session IDs in sync */
 829
 830                 if (asprintf(&id, "%"PRIu32, audit_id) < 0)
 831                         return -ENOMEM;
 832
 833                 /* Wut? There's already a session by this name and we
 834                  * didn't find it above? Weird, then let's not trust
 835                  * the audit data and let's better register a new
 836                  * ID */
 837                 if (hashmap_get(m->sessions, id)) {
 838                         log_warning("Existing logind session ID %s used by new audit session, ignoring", id);
 839                         audit_id = AUDIT_SESSION_INVALID;
 840
 841                         id = mfree(id);
 842                 }
 843         }
 844
 845         if (!id) {
 846                 do {
 847                         id = mfree(id);
 848
 849                         if (asprintf(&id, "c%lu", ++m->session_counter) < 0)
 850                                 return -ENOMEM;
 851
 852                 } while (hashmap_get(m->sessions, id));
 853         }
 854
 855         r = manager_add_user_by_uid(m, uid, &user);
 856         if (r < 0)
 857                 goto fail;
 858
 859         r = manager_add_session(m, id, &session);
 860         if (r < 0)
 861                 goto fail;
 862
 863         session_set_user(session, user);
 864
 865         session->leader = leader;
 866         session->audit_id = audit_id;
 867         session->type = t;
 868         session->class = c;
 869         session->remote = remote;
 870         session->vtnr = vtnr;
 871
 872         if (!isempty(tty)) {
 873                 session->tty = strdup(tty);
 874                 if (!session->tty) {
 875                         r = -ENOMEM;
 876                         goto fail;
 877                 }
 878         }
 879
 880         if (!isempty(display)) {
 881                 session->display = strdup(display);
 882                 if (!session->display) {
 883                         r = -ENOMEM;
 884                         goto fail;
 885                 }
 886         }
 887
 888         if (!isempty(remote_user)) {
 889                 session->remote_user = strdup(remote_user);
 890                 if (!session->remote_user) {
 891                         r = -ENOMEM;
 892                         goto fail;
 893                 }
 894         }
 895
 896         if (!isempty(remote_host)) {
 897                 session->remote_host = strdup(remote_host);
 898                 if (!session->remote_host) {
 899                         r = -ENOMEM;
 900                         goto fail;
 901                 }
 902         }
 903
 904         if (!isempty(service)) {
 905                 session->service = strdup(service);
 906                 if (!session->service) {
 907                         r = -ENOMEM;
 908                         goto fail;
 909                 }
 910         }
 911
 912         if (!isempty(desktop)) {
 913                 session->desktop = strdup(desktop);
 914                 if (!session->desktop) {
 915                         r = -ENOMEM;
 916                         goto fail;
 917                 }
 918         }
 919
 920         if (seat) {
 921                 r = seat_attach_session(seat, session);
 922                 if (r < 0)
 923                         goto fail;
 924         }
 925
 926         r = session_start(session);
 927         if (r < 0)
 928                 goto fail;
 929
 930         session->create_message = sd_bus_message_ref(message);
 931
 932 #if 0 /// UNNEEDED by elogind
 933         /* Now, let's wait until the slice unit and stuff got
 934          * created. We send the reply back from
 935          * session_send_create_reply(). */
 936 #else
 937         /* We reply directly. */
 938
 939         r = session_send_create_reply(session, NULL);
 940         if (r < 0)
 941                 goto fail;
 942 #endif // 0
 943
 944         return 1;
 945
 946 fail:
 947         if (session)
 948                 session_add_to_gc_queue(session);
 949
 950         if (user)
 951                 user_add_to_gc_queue(user);
 952
 953         return r;
 954 }
 955
 956 static int method_release_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 957         Manager *m = userdata;
 958         Session *session;
 959         const char *name;
 960         int r;
 961
 962         assert(message);
 963         assert(m);
 964
 965         r = sd_bus_message_read(message, "s", &name);
 966         if (r < 0)
 967                 return r;
 968
 969         r = manager_get_session_from_creds(m, message, name, error, &session);
 970         if (r < 0)
 971                 return r;
 972
 973         r = session_release(session);
 974         if (r < 0)
 975                 return r;
 976
 977 #if 1 /// elogind must queue this session
 978         session_add_to_gc_queue(session);
 979 #endif // 1
 980         return sd_bus_reply_method_return(message, NULL);
 981 }
 982
 983 static int method_activate_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_activate(message, session, error);
1001 }
1002
1003 static int method_activate_session_on_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1004         const char *session_name, *seat_name;
1005         Manager *m = userdata;
1006         Session *session;
1007         Seat *seat;
1008         int r;
1009
1010         assert(message);
1011         assert(m);
1012
1013         /* Same as ActivateSession() but refuses to work if
1014          * the seat doesn't match */
1015
1016         r = sd_bus_message_read(message, "ss", &session_name, &seat_name);
1017         if (r < 0)
1018                 return r;
1019
1020         r = manager_get_session_from_creds(m, message, session_name, error, &session);
1021         if (r < 0)
1022                 return r;
1023
1024         r = manager_get_seat_from_creds(m, message, seat_name, error, &seat);
1025         if (r < 0)
1026                 return r;
1027
1028         if (session->seat != seat)
1029                 return sd_bus_error_setf(error, BUS_ERROR_SESSION_NOT_ON_SEAT, "Session %s not on seat %s", session_name, seat_name);
1030
1031         r = session_activate(session);
1032         if (r < 0)
1033                 return r;
1034
1035         return sd_bus_reply_method_return(message, NULL);
1036 }
1037
1038 static int method_lock_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1039         Manager *m = userdata;
1040         Session *session;
1041         const char *name;
1042         int r;
1043
1044         assert(message);
1045         assert(m);
1046
1047         r = sd_bus_message_read(message, "s", &name);
1048         if (r < 0)
1049                 return r;
1050
1051         r = manager_get_session_from_creds(m, message, name, error, &session);
1052         if (r < 0)
1053                 return r;
1054
1055         return bus_session_method_lock(message, session, error);
1056 }
1057
1058 static int method_lock_sessions(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1059         Manager *m = userdata;
1060         int r;
1061
1062         assert(message);
1063         assert(m);
1064
1065         r = bus_verify_polkit_async(
1066                         message,
1067                         CAP_SYS_ADMIN,
1068                         "org.freedesktop.login1.lock-sessions",
1069                         NULL,
1070                         false,
1071                         UID_INVALID,
1072                         &m->polkit_registry,
1073                         error);
1074         if (r < 0)
1075                 return r;
1076         if (r == 0)
1077                 return 1; /* Will call us back */
1078
1079         r = session_send_lock_all(m, streq(sd_bus_message_get_member(message), "LockSessions"));
1080         if (r < 0)
1081                 return r;
1082
1083         return sd_bus_reply_method_return(message, NULL);
1084 }
1085
1086 static int method_kill_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1087         const char *name;
1088         Manager *m = userdata;
1089         Session *session;
1090         int r;
1091
1092         assert(message);
1093         assert(m);
1094
1095         r = sd_bus_message_read(message, "s", &name);
1096         if (r < 0)
1097                 return r;
1098
1099         r = manager_get_session_from_creds(m, message, name, error, &session);
1100         if (r < 0)
1101                 return r;
1102
1103         return bus_session_method_kill(message, session, error);
1104 }
1105
1106 static int method_kill_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1107         Manager *m = userdata;
1108         uint32_t uid;
1109         User *user;
1110         int r;
1111
1112         assert(message);
1113         assert(m);
1114
1115         r = sd_bus_message_read(message, "u", &uid);
1116         if (r < 0)
1117                 return r;
1118
1119         r = manager_get_user_from_creds(m, message, uid, error, &user);
1120         if (r < 0)
1121                 return r;
1122
1123         return bus_user_method_kill(message, user, error);
1124 }
1125
1126 static int method_terminate_session(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1127         Manager *m = userdata;
1128         const char *name;
1129         Session *session;
1130         int r;
1131
1132         assert(message);
1133         assert(m);
1134
1135         r = sd_bus_message_read(message, "s", &name);
1136         if (r < 0)
1137                 return r;
1138
1139         r = manager_get_session_from_creds(m, message, name, error, &session);
1140         if (r < 0)
1141                 return r;
1142
1143         return bus_session_method_terminate(message, session, error);
1144 }
1145
1146 static int method_terminate_user(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1147         Manager *m = userdata;
1148         uint32_t uid;
1149         User *user;
1150         int r;
1151
1152         assert(message);
1153         assert(m);
1154
1155         r = sd_bus_message_read(message, "u", &uid);
1156         if (r < 0)
1157                 return r;
1158
1159         r = manager_get_user_from_creds(m, message, uid, error, &user);
1160         if (r < 0)
1161                 return r;
1162
1163         return bus_user_method_terminate(message, user, error);
1164 }
1165
1166 static int method_terminate_seat(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1167         Manager *m = userdata;
1168         const char *name;
1169         Seat *seat;
1170         int r;
1171
1172         assert(message);
1173         assert(m);
1174
1175         r = sd_bus_message_read(message, "s", &name);
1176         if (r < 0)
1177                 return r;
1178
1179         r = manager_get_seat_from_creds(m, message, name, error, &seat);
1180         if (r < 0)
1181                 return r;
1182
1183         return bus_seat_method_terminate(message, seat, error);
1184 }
1185
1186 static int method_set_user_linger(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1187         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
1188         _cleanup_free_ char *cc = NULL;
1189         Manager *m = userdata;
1190         int r, b, interactive;
1191         struct passwd *pw;
1192         const char *path;
1193         uint32_t uid, auth_uid;
1194
1195         assert(message);
1196         assert(m);
1197
1198         r = sd_bus_message_read(message, "ubb", &uid, &b, &interactive);
1199         if (r < 0)
1200                 return r;
1201
1202         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID |
1203                                                SD_BUS_CREDS_OWNER_UID|SD_BUS_CREDS_AUGMENT, &creds);
1204         if (r < 0)
1205                 return r;
1206
1207         if (!uid_is_valid(uid)) {
1208                 /* Note that we get the owner UID of the session or user unit,
1209                  * not the actual client UID here! */
1210                 r = sd_bus_creds_get_owner_uid(creds, &uid);
1211                 if (r < 0)
1212                         return r;
1213         }
1214
1215         /* owner_uid is racy, so for authorization we must use euid */
1216         r = sd_bus_creds_get_euid(creds, &auth_uid);
1217         if (r < 0)
1218                 return r;
1219
1220         errno = 0;
1221         pw = getpwuid(uid);
1222         if (!pw)
1223                 return errno > 0 ? -errno : -ENOENT;
1224
1225         r = bus_verify_polkit_async(
1226                         message,
1227                         CAP_SYS_ADMIN,
1228                         uid == auth_uid ? "org.freedesktop.login1.set-self-linger" :
1229                                           "org.freedesktop.login1.set-user-linger",
1230                         NULL,
1231                         interactive,
1232                         UID_INVALID,
1233                         &m->polkit_registry,
1234                         error);
1235         if (r < 0)
1236                 return r;
1237         if (r == 0)
1238                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1239
1240         mkdir_p_label("/var/lib/elogind", 0755);
1241
1242         r = mkdir_safe_label("/var/lib/elogind/linger", 0755, 0, 0, false);
1243         if (r < 0)
1244                 return r;
1245
1246         cc = cescape(pw->pw_name);
1247         if (!cc)
1248                 return -ENOMEM;
1249
1250         path = strjoina("/var/lib/elogind/linger/", cc);
1251         if (b) {
1252                 User *u;
1253
1254                 r = touch(path);
1255                 if (r < 0)
1256                         return r;
1257
1258                 if (manager_add_user_by_uid(m, uid, &u) >= 0)
1259                         user_start(u);
1260
1261         } else {
1262                 User *u;
1263
1264                 r = unlink(path);
1265                 if (r < 0 && errno != ENOENT)
1266                         return -errno;
1267
1268                 u = hashmap_get(m->users, UID_TO_PTR(uid));
1269                 if (u)
1270                         user_add_to_gc_queue(u);
1271         }
1272
1273         return sd_bus_reply_method_return(message, NULL);
1274 }
1275
1276 static int trigger_device(Manager *m, struct udev_device *d) {
1277         _cleanup_udev_enumerate_unref_ struct udev_enumerate *e = NULL;
1278         struct udev_list_entry *first, *item;
1279         int r;
1280
1281         assert(m);
1282
1283         e = udev_enumerate_new(m->udev);
1284         if (!e)
1285                 return -ENOMEM;
1286
1287         if (d) {
1288                 r = udev_enumerate_add_match_parent(e, d);
1289                 if (r < 0)
1290                         return r;
1291         }
1292
1293         r = udev_enumerate_scan_devices(e);
1294         if (r < 0)
1295                 return r;
1296
1297         first = udev_enumerate_get_list_entry(e);
1298         udev_list_entry_foreach(item, first) {
1299                 _cleanup_free_ char *t = NULL;
1300                 const char *p;
1301
1302                 p = udev_list_entry_get_name(item);
1303
1304                 t = strappend(p, "/uevent");
1305                 if (!t)
1306                         return -ENOMEM;
1307
1308                 (void) write_string_file(t, "change", 0);
1309         }
1310
1311         return 0;
1312 }
1313
1314 static int attach_device(Manager *m, const char *seat, const char *sysfs) {
1315         _cleanup_udev_device_unref_ struct udev_device *d = NULL;
1316         _cleanup_free_ char *rule = NULL, *file = NULL;
1317         const char *id_for_seat;
1318         int r;
1319
1320         assert(m);
1321         assert(seat);
1322         assert(sysfs);
1323
1324         d = udev_device_new_from_syspath(m->udev, sysfs);
1325         if (!d)
1326                 return -ENODEV;
1327
1328         if (!udev_device_has_tag(d, "seat"))
1329                 return -ENODEV;
1330
1331         id_for_seat = udev_device_get_property_value(d, "ID_FOR_SEAT");
1332         if (!id_for_seat)
1333                 return -ENODEV;
1334
1335         if (asprintf(&file, "/etc/udev/rules.d/72-seat-%s.rules", id_for_seat) < 0)
1336                 return -ENOMEM;
1337
1338         if (asprintf(&rule, "TAG==\"seat\", ENV{ID_FOR_SEAT}==\"%s\", ENV{ID_SEAT}=\"%s\"", id_for_seat, seat) < 0)
1339                 return -ENOMEM;
1340
1341         mkdir_p_label("/etc/udev/rules.d", 0755);
1342         r = write_string_file_atomic_label(file, rule);
1343         if (r < 0)
1344                 return r;
1345
1346         return trigger_device(m, d);
1347 }
1348
1349 static int flush_devices(Manager *m) {
1350         _cleanup_closedir_ DIR *d;
1351
1352         assert(m);
1353
1354         d = opendir("/etc/udev/rules.d");
1355         if (!d) {
1356                 if (errno != ENOENT)
1357                         log_warning_errno(errno, "Failed to open /etc/udev/rules.d: %m");
1358         } else {
1359                 struct dirent *de;
1360
1361                 FOREACH_DIRENT_ALL(de, d, break) {
1362                         if (!dirent_is_file(de))
1363                                 continue;
1364
1365                         if (!startswith(de->d_name, "72-seat-"))
1366                                 continue;
1367
1368                         if (!endswith(de->d_name, ".rules"))
1369                                 continue;
1370
1371                         if (unlinkat(dirfd(d), de->d_name, 0) < 0)
1372                                 log_warning_errno(errno, "Failed to unlink %s: %m", de->d_name);
1373                 }
1374         }
1375
1376         return trigger_device(m, NULL);
1377 }
1378
1379 static int method_attach_device(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1380         const char *sysfs, *seat;
1381         Manager *m = userdata;
1382         int interactive, r;
1383
1384         assert(message);
1385         assert(m);
1386
1387         r = sd_bus_message_read(message, "ssb", &seat, &sysfs, &interactive);
1388         if (r < 0)
1389                 return r;
1390
1391         if (!path_startswith(sysfs, "/sys"))
1392                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path %s is not in /sys", sysfs);
1393
1394         if (!seat_name_is_valid(seat))
1395                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Seat %s is not valid", seat);
1396
1397         r = bus_verify_polkit_async(
1398                         message,
1399                         CAP_SYS_ADMIN,
1400                         "org.freedesktop.login1.attach-device",
1401                         NULL,
1402                         interactive,
1403                         UID_INVALID,
1404                         &m->polkit_registry,
1405                         error);
1406         if (r < 0)
1407                 return r;
1408         if (r == 0)
1409                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1410
1411         r = attach_device(m, seat, sysfs);
1412         if (r < 0)
1413                 return r;
1414
1415         return sd_bus_reply_method_return(message, NULL);
1416 }
1417
1418 static int method_flush_devices(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1419         Manager *m = userdata;
1420         int interactive, r;
1421
1422         assert(message);
1423         assert(m);
1424
1425         r = sd_bus_message_read(message, "b", &interactive);
1426         if (r < 0)
1427                 return r;
1428
1429         r = bus_verify_polkit_async(
1430                         message,
1431                         CAP_SYS_ADMIN,
1432                         "org.freedesktop.login1.flush-devices",
1433                         NULL,
1434                         interactive,
1435                         UID_INVALID,
1436                         &m->polkit_registry,
1437                         error);
1438         if (r < 0)
1439                 return r;
1440         if (r == 0)
1441                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1442
1443         r = flush_devices(m);
1444         if (r < 0)
1445                 return r;
1446
1447         return sd_bus_reply_method_return(message, NULL);
1448 }
1449
1450 static int have_multiple_sessions(
1451                 Manager *m,
1452                 uid_t uid) {
1453
1454         Session *session;
1455         Iterator i;
1456
1457         assert(m);
1458
1459         /* Check for other users' sessions. Greeter sessions do not
1460          * count, and non-login sessions do not count either. */
1461         HASHMAP_FOREACH(session, m->sessions, i)
1462                 if (session->class == SESSION_USER &&
1463                     session->user->uid != uid)
1464                         return true;
1465
1466         return false;
1467 }
1468
1469 #if 0 /// elogind has its own variant in elogind-dbus.c
1470 static int bus_manager_log_shutdown(
1471                 Manager *m,
1472                 const char *unit_name) {
1473
1474         const char *p, *q;
1475
1476         assert(m);
1477         assert(unit_name);
1478
1479         if (streq(unit_name, SPECIAL_POWEROFF_TARGET)) {
1480                 p = "MESSAGE=System is powering down";
1481                 q = "SHUTDOWN=power-off";
1482         } else if (streq(unit_name, SPECIAL_REBOOT_TARGET)) {
1483                 p = "MESSAGE=System is rebooting";
1484                 q = "SHUTDOWN=reboot";
1485         } else if (streq(unit_name, SPECIAL_HALT_TARGET)) {
1486                 p = "MESSAGE=System is halting";
1487                 q = "SHUTDOWN=halt";
1488         } else if (streq(unit_name, SPECIAL_KEXEC_TARGET)) {
1489                 p = "MESSAGE=System is rebooting with kexec";
1490                 q = "SHUTDOWN=kexec";
1491         } else {
1492                 p = "MESSAGE=System is shutting down";
1493                 q = NULL;
1494         }
1495
1496         if (isempty(m->wall_message))
1497                 p = strjoina(p, ".");
1498         else
1499                 p = strjoina(p, " (", m->wall_message, ").");
1500
1501         return log_struct(LOG_NOTICE,
1502                           "MESSAGE_ID=" SD_MESSAGE_SHUTDOWN_STR,
1503                           p,
1504                           q,
1505                           NULL);
1506 }
1507 #endif // 0
1508
1509 static int lid_switch_ignore_handler(sd_event_source *e, uint64_t usec, void *userdata) {
1510         Manager *m = userdata;
1511
1512         assert(e);
1513         assert(m);
1514
1515         m->lid_switch_ignore_event_source = sd_event_source_unref(m->lid_switch_ignore_event_source);
1516         return 0;
1517 }
1518
1519 int manager_set_lid_switch_ignore(Manager *m, usec_t until) {
1520         int r;
1521
1522         assert(m);
1523
1524         if (until <= now(CLOCK_MONOTONIC))
1525                 return 0;
1526
1527         /* We want to ignore the lid switch for a while after each
1528          * suspend, and after boot-up. Hence let's install a timer for
1529          * this. As long as the event source exists we ignore the lid
1530          * switch. */
1531
1532         if (m->lid_switch_ignore_event_source) {
1533                 usec_t u;
1534
1535                 r = sd_event_source_get_time(m->lid_switch_ignore_event_source, &u);
1536                 if (r < 0)
1537                         return r;
1538
1539                 if (until <= u)
1540                         return 0;
1541
1542                 r = sd_event_source_set_time(m->lid_switch_ignore_event_source, until);
1543         } else
1544                 r = sd_event_add_time(
1545                                 m->event,
1546                                 &m->lid_switch_ignore_event_source,
1547                                 CLOCK_MONOTONIC,
1548                                 until, 0,
1549                                 lid_switch_ignore_handler, m);
1550
1551         return r;
1552 }
1553
1554 #if 0 /// elogind-dbus.c needs to access this
1555 static int send_prepare_for(Manager *m, InhibitWhat w, bool _active) {
1556 #else
1557 int send_prepare_for(Manager *m, InhibitWhat w, bool _active) {
1558 #endif // 0
1559
1560         static const char * const signal_name[_INHIBIT_WHAT_MAX] = {
1561                 [INHIBIT_SHUTDOWN] = "PrepareForShutdown",
1562                 [INHIBIT_SLEEP] = "PrepareForSleep"
1563         };
1564
1565         int active = _active;
1566
1567         assert(m);
1568         assert(w >= 0);
1569         assert(w < _INHIBIT_WHAT_MAX);
1570         assert(signal_name[w]);
1571
1572         return sd_bus_emit_signal(m->bus,
1573                                   "/org/freedesktop/login1",
1574                                   "org.freedesktop.login1.Manager",
1575                                   signal_name[w],
1576                                   "b",
1577                                   active);
1578 }
1579
1580 #if 0 /// elogind has its own variant in elogind-dbus.c
1581 static int execute_shutdown_or_sleep(
1582                 Manager *m,
1583                 InhibitWhat w,
1584                 const char *unit_name,
1585                 sd_bus_error *error) {
1586
1587         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1588         char *c = NULL;
1589         const char *p;
1590         int r;
1591
1592         assert(m);
1593         assert(w > 0);
1594         assert(w < _INHIBIT_WHAT_MAX);
1595         assert(unit_name);
1596
1597         if (w == INHIBIT_SHUTDOWN)
1598                 bus_manager_log_shutdown(m, unit_name);
1599
1600         r = sd_bus_call_method(
1601                         m->bus,
1602                         "org.freedesktop.systemd1",
1603                         "/org/freedesktop/systemd1",
1604                         "org.freedesktop.systemd1.Manager",
1605                         "StartUnit",
1606                         error,
1607                         &reply,
1608                         "ss", unit_name, "replace-irreversibly");
1609         if (r < 0)
1610                 goto error;
1611
1612         r = sd_bus_message_read(reply, "o", &p);
1613         if (r < 0)
1614                 goto error;
1615
1616         c = strdup(p);
1617         if (!c) {
1618                 r = -ENOMEM;
1619                 goto error;
1620         }
1621
1622         m->action_unit = unit_name;
1623         free(m->action_job);
1624         m->action_job = c;
1625         m->action_what = w;
1626
1627         /* Make sure the lid switch is ignored for a while */
1628         manager_set_lid_switch_ignore(m, now(CLOCK_MONOTONIC) + m->holdoff_timeout_usec);
1629
1630         return 0;
1631
1632 error:
1633         /* Tell people that they now may take a lock again */
1634         (void) send_prepare_for(m, w, false);
1635
1636         return r;
1637 }
1638 #endif // 0
1639
1640 int manager_dispatch_delayed(Manager *manager, bool timeout) {
1641
1642         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1643         Inhibitor *offending = NULL;
1644         int r;
1645
1646         assert(manager);
1647
1648 #if 0 /// elogind has no action_job, but a pending_action
1649         if (manager->action_what == 0 || manager->action_job)
1650 #else
1651         if ( (0 == manager->action_what) || (HANDLE_IGNORE == manager->pending_action) )
1652 #endif // 0
1653                 return 0;
1654
1655         if (manager_is_inhibited(manager, manager->action_what, INHIBIT_DELAY, NULL, false, false, 0, &offending)) {
1656                 _cleanup_free_ char *comm = NULL, *u = NULL;
1657
1658                 if (!timeout)
1659                         return 0;
1660
1661                 (void) get_process_comm(offending->pid, &comm);
1662                 u = uid_to_name(offending->uid);
1663
1664                 log_notice("Delay lock is active (UID "UID_FMT"/%s, PID "PID_FMT"/%s) but inhibitor timeout is reached.",
1665                            offending->uid, strna(u),
1666                            offending->pid, strna(comm));
1667         }
1668
1669         /* Actually do the operation */
1670 #if 0 /// elogind has no action_unit but a pending_action
1671         r = execute_shutdown_or_sleep(manager, manager->action_what, manager->action_unit, &error);
1672 #else
1673         r = execute_shutdown_or_sleep(manager, manager->action_what, manager->pending_action, &error);
1674 #endif // 0
1675         if (r < 0) {
1676                 log_warning("Error during inhibitor-delayed operation (already returned success to client): %s",
1677                             bus_error_message(&error, r));
1678
1679
1680 #if 0 /// elogind has no action_unit but a pending_action
1681                 manager->action_unit = NULL;
1682                 manager->action_what = 0;
1683                 return r;
1684 #else
1685                 manager->pending_action = HANDLE_IGNORE;
1686                 manager->action_what    = 0;
1687                 /* It is not a critical error for elogind if suspending fails */
1688 #endif // 0
1689         }
1690
1691         return 1;
1692 }
1693
1694 static int manager_inhibit_timeout_handler(
1695                         sd_event_source *s,
1696                         uint64_t usec,
1697                         void *userdata) {
1698
1699         Manager *manager = userdata;
1700         int r;
1701
1702         assert(manager);
1703         assert(manager->inhibit_timeout_source == s);
1704
1705         r = manager_dispatch_delayed(manager, true);
1706         return (r < 0) ? r : 0;
1707 }
1708
1709 #if 0 /// elogind does not have unit_name but action
1710 static int delay_shutdown_or_sleep(
1711                 Manager *m,
1712                 InhibitWhat w,
1713                 const char *unit_name) {
1714 #else
1715 int delay_shutdown_or_sleep(
1716                 Manager *m,
1717                 InhibitWhat w,
1718                 HandleAction action) {
1719 #endif // 0
1720         int r;
1721         usec_t timeout_val;
1722
1723         assert(m);
1724         assert(w >= 0);
1725         assert(w < _INHIBIT_WHAT_MAX);
1726 #if 0 /// UNNEEDED by elogind
1727         assert(unit_name);
1728 #endif // 0
1729
1730         timeout_val = now(CLOCK_MONOTONIC) + m->inhibit_delay_max;
1731
1732         if (m->inhibit_timeout_source) {
1733                 r = sd_event_source_set_time(m->inhibit_timeout_source, timeout_val);
1734                 if (r < 0)
1735                         return log_error_errno(r, "sd_event_source_set_time() failed: %m");
1736
1737                 r = sd_event_source_set_enabled(m->inhibit_timeout_source, SD_EVENT_ONESHOT);
1738                 if (r < 0)
1739                         return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
1740         } else {
1741                 r = sd_event_add_time(m->event, &m->inhibit_timeout_source, CLOCK_MONOTONIC,
1742                                       timeout_val, 0, manager_inhibit_timeout_handler, m);
1743                 if (r < 0)
1744                         return r;
1745         }
1746
1747 #if 0 /// elogind does not have unit_name but pendig_action
1748         m->action_unit = unit_name;
1749 #else
1750         m->pending_action = action;
1751 #endif // 0
1752         m->action_what = w;
1753
1754         return 0;
1755 }
1756
1757 int bus_manager_shutdown_or_sleep_now_or_later(
1758                 Manager *m,
1759 #if 0 /// elogind has HandleAction instead of const char* unit_name
1760                 const char *unit_name,
1761 #else
1762                 HandleAction unit_name,
1763 #endif // 0
1764                 InhibitWhat w,
1765                 sd_bus_error *error) {
1766         bool delayed;
1767         int r;
1768
1769         assert(m);
1770 #if 0 /// for elogind only w has to be checked.
1771         assert(unit_name);
1772         assert(w > 0);
1773         assert(w <= _INHIBIT_WHAT_MAX);
1774         assert(!m->action_job);
1775 #else
1776         assert(w > 0);
1777         assert(w <= _INHIBIT_WHAT_MAX);
1778 #endif // 0
1779
1780         /* Tell everybody to prepare for shutdown/sleep */
1781         (void) send_prepare_for(m, w, true);
1782
1783         delayed =
1784                 m->inhibit_delay_max > 0 &&
1785                 manager_is_inhibited(m, w, INHIBIT_DELAY, NULL, false, false, 0, NULL);
1786
1787         log_debug_elogind("%s called for %s (%sdelayed)", __FUNCTION__,
1788                           handle_action_to_string(unit_name),
1789                           delayed ? "" : "NOT ");
1790
1791         if (delayed)
1792                 /* Shutdown is delayed, keep in mind what we
1793                  * want to do, and start a timeout */
1794                 r = delay_shutdown_or_sleep(m, w, unit_name);
1795         else
1796                 /* Shutdown is not delayed, execute it
1797                  * immediately */
1798                 r = execute_shutdown_or_sleep(m, w, unit_name, error);
1799
1800         return r;
1801 }
1802
1803 static int verify_shutdown_creds(
1804                 Manager *m,
1805                 sd_bus_message *message,
1806                 InhibitWhat w,
1807                 bool interactive,
1808                 const char *action,
1809                 const char *action_multiple_sessions,
1810                 const char *action_ignore_inhibit,
1811                 sd_bus_error *error) {
1812
1813         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
1814         bool multiple_sessions, blocked;
1815         uid_t uid;
1816         int r;
1817
1818         assert(m);
1819         assert(message);
1820         assert(w >= 0);
1821         assert(w <= _INHIBIT_WHAT_MAX);
1822
1823         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
1824         if (r < 0)
1825                 return r;
1826
1827         r = sd_bus_creds_get_euid(creds, &uid);
1828         if (r < 0)
1829                 return r;
1830
1831         r = have_multiple_sessions(m, uid);
1832         if (r < 0)
1833                 return r;
1834
1835         multiple_sessions = r > 0;
1836         blocked = manager_is_inhibited(m, w, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
1837
1838         if (multiple_sessions && action_multiple_sessions) {
1839                 r = bus_verify_polkit_async(message, CAP_SYS_BOOT, action_multiple_sessions, NULL, interactive, UID_INVALID, &m->polkit_registry, error);
1840                 if (r < 0)
1841                         return r;
1842                 if (r == 0)
1843                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1844         }
1845
1846         if (blocked && action_ignore_inhibit) {
1847                 r = bus_verify_polkit_async(message, CAP_SYS_BOOT, action_ignore_inhibit, NULL, interactive, UID_INVALID, &m->polkit_registry, error);
1848                 if (r < 0)
1849                         return r;
1850                 if (r == 0)
1851                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1852         }
1853
1854         if (!multiple_sessions && !blocked && action) {
1855                 r = bus_verify_polkit_async(message, CAP_SYS_BOOT, action, NULL, interactive, UID_INVALID, &m->polkit_registry, error);
1856                 if (r < 0)
1857                         return r;
1858                 if (r == 0)
1859                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1860         }
1861
1862         return 0;
1863 }
1864
1865 static int method_do_shutdown_or_sleep(
1866                 Manager *m,
1867                 sd_bus_message *message,
1868 #if 0 /// elogind has HandleAction instead of const char* unit_name
1869                 const char *unit_name,
1870 #else
1871                 HandleAction unit_name,
1872 #endif // 0
1873                 InhibitWhat w,
1874                 const char *action,
1875                 const char *action_multiple_sessions,
1876                 const char *action_ignore_inhibit,
1877                 const char *sleep_verb,
1878                 sd_bus_error *error) {
1879
1880         int interactive, r;
1881
1882         assert(m);
1883         assert(message);
1884 #if 0 /// elogind does not need this to be checked
1885         assert(unit_name);
1886 #endif // 0
1887         assert(w >= 0);
1888         assert(w <= _INHIBIT_WHAT_MAX);
1889
1890         r = sd_bus_message_read(message, "b", &interactive);
1891         if (r < 0)
1892                 return r;
1893
1894         log_debug_elogind("%s called with action '%s', sleep '%s' (%sinteractive)",
1895                           __FUNCTION__, action, sleep_verb,
1896                           interactive ? "" : "NOT ");
1897
1898         /* Don't allow multiple jobs being executed at the same time */
1899         if (m->action_what)
1900                 return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS, "There's already a shutdown or sleep operation in progress");
1901
1902         if (sleep_verb) {
1903 #if 0 /// Within elogind the manager m must be provided, too
1904                 r = can_sleep(sleep_verb);
1905 #else
1906                 r = can_sleep(m, sleep_verb);
1907 #endif // 0
1908                 if (r < 0)
1909                         return r;
1910
1911                 if (r == 0)
1912                         return sd_bus_error_setf(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED, "Sleep verb not supported");
1913         }
1914
1915 #if 0 /// Within elogind it does not make sense to verify shutdown creds when suspending
1916         r = verify_shutdown_creds(m, message, w, interactive, action, action_multiple_sessions,
1917                                   action_ignore_inhibit, error);
1918         if (r != 0)
1919                 return r;
1920 #else
1921         if (IN_SET(unit_name, HANDLE_HALT, HANDLE_POWEROFF, HANDLE_REBOOT)) {
1922                 r = verify_shutdown_creds(m, message, w, interactive, action, action_multiple_sessions,
1923                                           action_ignore_inhibit, error);
1924                 log_debug_elogind("verify_shutdown_creds() returned %d", r);
1925                 if (r != 0)
1926                         return r;
1927         }
1928 #endif // 0
1929
1930         r = bus_manager_shutdown_or_sleep_now_or_later(m, unit_name, w, error);
1931         if (r < 0)
1932                 return r;
1933
1934         return sd_bus_reply_method_return(message, NULL);
1935 }
1936
1937 static int method_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1938         Manager *m = userdata;
1939
1940         log_debug_elogind("%s called", __FUNCTION__);
1941
1942         return method_do_shutdown_or_sleep(
1943                         m, message,
1944 #if 0 /// elogind uses HandleAction instead of const char* unti names
1945                         SPECIAL_POWEROFF_TARGET,
1946 #else
1947                         HANDLE_POWEROFF,
1948 #endif // 0
1949                         INHIBIT_SHUTDOWN,
1950                         "org.freedesktop.login1.power-off",
1951                         "org.freedesktop.login1.power-off-multiple-sessions",
1952                         "org.freedesktop.login1.power-off-ignore-inhibit",
1953                         NULL,
1954                         error);
1955 }
1956
1957 static int method_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1958         Manager *m = userdata;
1959
1960         log_debug_elogind("%s called", __FUNCTION__);
1961
1962         return method_do_shutdown_or_sleep(
1963                         m, message,
1964 #if 0 /// elogind uses HandleAction instead of const char* unti names
1965                         SPECIAL_REBOOT_TARGET,
1966 #else
1967                         HANDLE_REBOOT,
1968 #endif // 0
1969                         INHIBIT_SHUTDOWN,
1970                         "org.freedesktop.login1.reboot",
1971                         "org.freedesktop.login1.reboot-multiple-sessions",
1972                         "org.freedesktop.login1.reboot-ignore-inhibit",
1973                         NULL,
1974                         error);
1975 }
1976
1977 static int method_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1978         Manager *m = userdata;
1979
1980         log_debug_elogind("%s called", __FUNCTION__);
1981
1982         return method_do_shutdown_or_sleep(
1983                         m, message,
1984 #if 0 /// elogind uses HandleAction instead of const char* unti names
1985                         SPECIAL_HALT_TARGET,
1986 #else
1987                         HANDLE_HALT,
1988 #endif // 0
1989                         INHIBIT_SHUTDOWN,
1990                         "org.freedesktop.login1.halt",
1991                         "org.freedesktop.login1.halt-multiple-sessions",
1992                         "org.freedesktop.login1.halt-ignore-inhibit",
1993                         NULL,
1994                         error);
1995 }
1996
1997 static int method_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1998         Manager *m = userdata;
1999
2000         log_debug_elogind("%s called", __FUNCTION__);
2001
2002         return method_do_shutdown_or_sleep(
2003                         m, message,
2004 #if 0 /// elogind uses HandleAction instead of const char* unti names
2005                         SPECIAL_SUSPEND_TARGET,
2006 #else
2007                         HANDLE_SUSPEND,
2008 #endif // 0
2009                         INHIBIT_SLEEP,
2010                         "org.freedesktop.login1.suspend",
2011                         "org.freedesktop.login1.suspend-multiple-sessions",
2012                         "org.freedesktop.login1.suspend-ignore-inhibit",
2013                         "suspend",
2014                         error);
2015 }
2016
2017 static int method_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2018         Manager *m = userdata;
2019
2020         log_debug_elogind("%s called", __FUNCTION__);
2021
2022         return method_do_shutdown_or_sleep(
2023                         m, message,
2024 #if 0 /// elogind uses HandleAction instead of const char* unti names
2025                         SPECIAL_HIBERNATE_TARGET,
2026 #else
2027                         HANDLE_HIBERNATE,
2028 #endif // 0
2029                         INHIBIT_SLEEP,
2030                         "org.freedesktop.login1.hibernate",
2031                         "org.freedesktop.login1.hibernate-multiple-sessions",
2032                         "org.freedesktop.login1.hibernate-ignore-inhibit",
2033                         "hibernate",
2034                         error);
2035 }
2036
2037 static int method_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2038         Manager *m = userdata;
2039
2040         log_debug_elogind("%s called", __FUNCTION__);
2041
2042         return method_do_shutdown_or_sleep(
2043                         m, message,
2044 #if 0 /// elogind uses HandleAction instead of const char* unti names
2045                         SPECIAL_HYBRID_SLEEP_TARGET,
2046 #else
2047                         HANDLE_HYBRID_SLEEP,
2048 #endif // 0
2049                         INHIBIT_SLEEP,
2050                         "org.freedesktop.login1.hibernate",
2051                         "org.freedesktop.login1.hibernate-multiple-sessions",
2052                         "org.freedesktop.login1.hibernate-ignore-inhibit",
2053                         "hybrid-sleep",
2054                         error);
2055 }
2056
2057 static int nologin_timeout_handler(
2058                         sd_event_source *s,
2059                         uint64_t usec,
2060                         void *userdata) {
2061
2062         Manager *m = userdata;
2063
2064         log_info("Creating /run/nologin, blocking further logins...");
2065
2066         m->unlink_nologin =
2067                 create_shutdown_run_nologin_or_warn() >= 0;
2068
2069         return 0;
2070 }
2071
2072 static int update_schedule_file(Manager *m) {
2073         _cleanup_free_ char *temp_path = NULL;
2074         _cleanup_fclose_ FILE *f = NULL;
2075         int r;
2076
2077         assert(m);
2078
2079         r = mkdir_safe_label("/run/systemd/shutdown", 0755, 0, 0, false);
2080         if (r < 0)
2081                 return log_error_errno(r, "Failed to create shutdown subdirectory: %m");
2082
2083         r = fopen_temporary("/run/systemd/shutdown/scheduled", &f, &temp_path);
2084         if (r < 0)
2085                 return log_error_errno(r, "Failed to save information about scheduled shutdowns: %m");
2086
2087         (void) fchmod(fileno(f), 0644);
2088
2089         fprintf(f,
2090                 "USEC="USEC_FMT"\n"
2091                 "WARN_WALL=%i\n"
2092                 "MODE=%s\n",
2093                 m->scheduled_shutdown_timeout,
2094                 m->enable_wall_messages,
2095                 m->scheduled_shutdown_type);
2096
2097         if (!isempty(m->wall_message)) {
2098                 _cleanup_free_ char *t;
2099
2100                 t = cescape(m->wall_message);
2101                 if (!t) {
2102                         r = -ENOMEM;
2103                         goto fail;
2104                 }
2105
2106                 fprintf(f, "WALL_MESSAGE=%s\n", t);
2107         }
2108
2109         r = fflush_and_check(f);
2110         if (r < 0)
2111                 goto fail;
2112
2113         if (rename(temp_path, "/run/systemd/shutdown/scheduled") < 0) {
2114                 r = -errno;
2115                 goto fail;
2116         }
2117
2118         return 0;
2119
2120 fail:
2121         (void) unlink(temp_path);
2122         (void) unlink("/run/systemd/shutdown/scheduled");
2123
2124         return log_error_errno(r, "Failed to write information about scheduled shutdowns: %m");
2125 }
2126
2127 #if 0 /// elogind must access this from elogind-dbus.c
2128 static void reset_scheduled_shutdown(Manager *m) {
2129 #else
2130 void reset_scheduled_shutdown(Manager *m) {
2131 #endif // 0
2132         assert(m);
2133
2134         m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2135         m->wall_message_timeout_source = sd_event_source_unref(m->wall_message_timeout_source);
2136         m->nologin_timeout_source = sd_event_source_unref(m->nologin_timeout_source);
2137
2138         m->scheduled_shutdown_type = mfree(m->scheduled_shutdown_type);
2139         m->scheduled_shutdown_timeout = 0;
2140         m->shutdown_dry_run = false;
2141
2142         if (m->unlink_nologin) {
2143                 (void) unlink_or_warn("/run/nologin");
2144                 m->unlink_nologin = false;
2145         }
2146
2147         (void) unlink("/run/systemd/shutdown/scheduled");
2148 }
2149
2150 #if 0 /// elogind has its own variant in elogind-dbus.c
2151 static int manager_scheduled_shutdown_handler(
2152                         sd_event_source *s,
2153                         uint64_t usec,
2154                         void *userdata) {
2155
2156         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
2157         Manager *m = userdata;
2158         const char *target;
2159         int r;
2160
2161         assert(m);
2162
2163         if (isempty(m->scheduled_shutdown_type))
2164                 return 0;
2165
2166         if (streq(m->scheduled_shutdown_type, "poweroff"))
2167                 target = SPECIAL_POWEROFF_TARGET;
2168         else if (streq(m->scheduled_shutdown_type, "reboot"))
2169                 target = SPECIAL_REBOOT_TARGET;
2170         else if (streq(m->scheduled_shutdown_type, "halt"))
2171                 target = SPECIAL_HALT_TARGET;
2172         else
2173                 assert_not_reached("unexpected shutdown type");
2174
2175         /* Don't allow multiple jobs being executed at the same time */
2176         if (m->action_what) {
2177                 r = -EALREADY;
2178                 log_error("Scheduled shutdown to %s failed: shutdown or sleep operation already in progress", target);
2179                 goto error;
2180         }
2181
2182         if (m->shutdown_dry_run) {
2183                 /* We do not process delay inhibitors here.  Otherwise, we
2184                  * would have to be considered "in progress" (like the check
2185                  * above) for some seconds after our admin has seen the final
2186                  * wall message. */
2187
2188                 bus_manager_log_shutdown(m, target);
2189                 log_info("Running in dry run, suppressing action.");
2190                 reset_scheduled_shutdown(m);
2191
2192                 return 0;
2193         }
2194
2195         r = bus_manager_shutdown_or_sleep_now_or_later(m, target, INHIBIT_SHUTDOWN, &error);
2196         if (r < 0) {
2197                 log_error_errno(r, "Scheduled shutdown to %s failed: %m", target);
2198                 goto error;
2199         }
2200
2201         return 0;
2202
2203 error:
2204         reset_scheduled_shutdown(m);
2205         return r;
2206 }
2207 #endif // 0
2208
2209 static int method_schedule_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2210         Manager *m = userdata;
2211         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2212         const char *action_multiple_sessions = NULL;
2213         const char *action_ignore_inhibit = NULL;
2214         const char *action = NULL;
2215         uint64_t elapse;
2216         char *type;
2217         int r;
2218         bool dry_run = false;
2219
2220         assert(m);
2221         assert(message);
2222
2223         log_debug_elogind("%s called", __FUNCTION__);
2224         r = sd_bus_message_read(message, "st", &type, &elapse);
2225         if (r < 0)
2226                 return r;
2227
2228         if (startswith(type, "dry-")) {
2229                 type += 4;
2230                 dry_run = true;
2231         }
2232
2233         if (streq(type, "poweroff")) {
2234                 action = "org.freedesktop.login1.power-off";
2235                 action_multiple_sessions = "org.freedesktop.login1.power-off-multiple-sessions";
2236                 action_ignore_inhibit = "org.freedesktop.login1.power-off-ignore-inhibit";
2237         } else if (streq(type, "reboot")) {
2238                 action = "org.freedesktop.login1.reboot";
2239                 action_multiple_sessions = "org.freedesktop.login1.reboot-multiple-sessions";
2240                 action_ignore_inhibit = "org.freedesktop.login1.reboot-ignore-inhibit";
2241         } else if (streq(type, "halt")) {
2242                 action = "org.freedesktop.login1.halt";
2243                 action_multiple_sessions = "org.freedesktop.login1.halt-multiple-sessions";
2244                 action_ignore_inhibit = "org.freedesktop.login1.halt-ignore-inhibit";
2245         } else
2246                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unsupported shutdown type");
2247
2248         r = verify_shutdown_creds(m, message, INHIBIT_SHUTDOWN, false,
2249                                   action, action_multiple_sessions, action_ignore_inhibit, error);
2250         if (r != 0)
2251                 return r;
2252
2253         if (m->scheduled_shutdown_timeout_source) {
2254                 r = sd_event_source_set_time(m->scheduled_shutdown_timeout_source, elapse);
2255                 if (r < 0)
2256                         return log_error_errno(r, "sd_event_source_set_time() failed: %m");
2257
2258                 r = sd_event_source_set_enabled(m->scheduled_shutdown_timeout_source, SD_EVENT_ONESHOT);
2259                 if (r < 0)
2260                         return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
2261         } else {
2262                 r = sd_event_add_time(m->event, &m->scheduled_shutdown_timeout_source,
2263                                       CLOCK_REALTIME, elapse, 0, manager_scheduled_shutdown_handler, m);
2264                 if (r < 0)
2265                         return log_error_errno(r, "sd_event_add_time() failed: %m");
2266         }
2267
2268         r = free_and_strdup(&m->scheduled_shutdown_type, type);
2269         if (r < 0) {
2270                 m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2271                 return log_oom();
2272         }
2273
2274         m->shutdown_dry_run = dry_run;
2275
2276         if (m->nologin_timeout_source) {
2277                 r = sd_event_source_set_time(m->nologin_timeout_source, elapse);
2278                 if (r < 0)
2279                         return log_error_errno(r, "sd_event_source_set_time() failed: %m");
2280
2281                 r = sd_event_source_set_enabled(m->nologin_timeout_source, SD_EVENT_ONESHOT);
2282                 if (r < 0)
2283                         return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
2284         } else {
2285                 r = sd_event_add_time(m->event, &m->nologin_timeout_source,
2286                                       CLOCK_REALTIME, elapse - 5 * USEC_PER_MINUTE, 0, nologin_timeout_handler, m);
2287                 if (r < 0)
2288                         return log_error_errno(r, "sd_event_add_time() failed: %m");
2289         }
2290
2291         m->scheduled_shutdown_timeout = elapse;
2292
2293         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
2294         if (r >= 0) {
2295                 const char *tty = NULL;
2296
2297                 (void) sd_bus_creds_get_uid(creds, &m->scheduled_shutdown_uid);
2298                 (void) sd_bus_creds_get_tty(creds, &tty);
2299
2300                 r = free_and_strdup(&m->scheduled_shutdown_tty, tty);
2301                 if (r < 0) {
2302                         m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2303                         return log_oom();
2304                 }
2305         }
2306
2307         r = manager_setup_wall_message_timer(m);
2308         if (r < 0)
2309                 return r;
2310
2311         r = update_schedule_file(m);
2312         if (r < 0)
2313                 return r;
2314
2315         return sd_bus_reply_method_return(message, NULL);
2316 }
2317
2318 static int method_cancel_scheduled_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2319         Manager *m = userdata;
2320         bool cancelled;
2321 #if 1 /// elogind needs to construct the message to allow extra wall messages
2322         _cleanup_free_ char *l = NULL;
2323 #endif // 1
2324
2325         assert(m);
2326         assert(message);
2327
2328         log_debug_elogind("%s called", __FUNCTION__);
2329         cancelled = m->scheduled_shutdown_type != NULL;
2330         reset_scheduled_shutdown(m);
2331
2332         if (cancelled && m->enable_wall_messages) {
2333                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2334                 const char *tty = NULL;
2335                 uid_t uid = 0;
2336                 int r;
2337
2338                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
2339                 if (r >= 0) {
2340                         (void) sd_bus_creds_get_uid(creds, &uid);
2341                         (void) sd_bus_creds_get_tty(creds, &tty);
2342                 }
2343
2344 #if 0 /// elogind wants to allow extra cancellation messages
2345                 utmp_wall("The system shutdown has been cancelled",
2346                           uid_to_name(uid), tty, logind_wall_tty_filter, m);
2347 #else
2348                 r = asprintf(&l, "%s%sThe system shutdown has been cancelled!",
2349                              strempty(m->wall_message),
2350                              isempty(m->wall_message) ? "" : "\n");
2351                 if (r < 0) {
2352                         log_oom();
2353                         return 0;
2354                 }
2355
2356                 utmp_wall(l, uid_to_name(uid), tty, logind_wall_tty_filter, m);
2357 #endif // 0
2358         }
2359
2360         return sd_bus_reply_method_return(message, "b", cancelled);
2361 }
2362
2363 static int method_can_shutdown_or_sleep(
2364                 Manager *m,
2365                 sd_bus_message *message,
2366                 InhibitWhat w,
2367                 const char *action,
2368                 const char *action_multiple_sessions,
2369                 const char *action_ignore_inhibit,
2370                 const char *sleep_verb,
2371                 sd_bus_error *error) {
2372
2373         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2374         bool multiple_sessions, challenge, blocked;
2375         const char *result = NULL;
2376         uid_t uid;
2377         int r;
2378
2379         assert(m);
2380         assert(message);
2381         assert(w >= 0);
2382         assert(w <= _INHIBIT_WHAT_MAX);
2383         assert(action);
2384         assert(action_multiple_sessions);
2385         assert(action_ignore_inhibit);
2386
2387         if (sleep_verb) {
2388 #if 0 /// elogind needs to have the manager being passed
2389                 r = can_sleep(sleep_verb);
2390 #else
2391                 r = can_sleep(m, sleep_verb);
2392 #endif // 0
2393                 if (r < 0)
2394                         return r;
2395                 if (r == 0)
2396                         return sd_bus_reply_method_return(message, "s", "na");
2397         }
2398
2399         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
2400         if (r < 0)
2401                 return r;
2402
2403         r = sd_bus_creds_get_euid(creds, &uid);
2404         if (r < 0)
2405                 return r;
2406
2407         r = have_multiple_sessions(m, uid);
2408         if (r < 0)
2409                 return r;
2410
2411         multiple_sessions = r > 0;
2412         blocked = manager_is_inhibited(m, w, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
2413
2414         if (multiple_sessions) {
2415                 r = bus_test_polkit(message, CAP_SYS_BOOT, action_multiple_sessions, NULL, UID_INVALID, &challenge, error);
2416                 if (r < 0)
2417                         return r;
2418
2419                 if (r > 0)
2420                         result = "yes";
2421                 else if (challenge)
2422                         result = "challenge";
2423                 else
2424                         result = "no";
2425         }
2426
2427         if (blocked) {
2428                 r = bus_test_polkit(message, CAP_SYS_BOOT, action_ignore_inhibit, NULL, UID_INVALID, &challenge, error);
2429                 if (r < 0)
2430                         return r;
2431
2432                 if (r > 0 && !result)
2433                         result = "yes";
2434                 else if (challenge && (!result || streq(result, "yes")))
2435                         result = "challenge";
2436                 else
2437                         result = "no";
2438         }
2439
2440         if (!multiple_sessions && !blocked) {
2441                 /* If neither inhibit nor multiple sessions
2442                  * apply then just check the normal policy */
2443
2444                 r = bus_test_polkit(message, CAP_SYS_BOOT, action, NULL, UID_INVALID, &challenge, error);
2445                 if (r < 0)
2446                         return r;
2447
2448                 if (r > 0)
2449                         result = "yes";
2450                 else if (challenge)
2451                         result = "challenge";
2452                 else
2453                         result = "no";
2454         }
2455
2456         return sd_bus_reply_method_return(message, "s", result);
2457 }
2458
2459 static int method_can_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2460         Manager *m = userdata;
2461
2462         return method_can_shutdown_or_sleep(
2463                         m, message,
2464                         INHIBIT_SHUTDOWN,
2465                         "org.freedesktop.login1.power-off",
2466                         "org.freedesktop.login1.power-off-multiple-sessions",
2467                         "org.freedesktop.login1.power-off-ignore-inhibit",
2468                         NULL,
2469                         error);
2470 }
2471
2472 static int method_can_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2473         Manager *m = userdata;
2474
2475         return method_can_shutdown_or_sleep(
2476                         m, message,
2477                         INHIBIT_SHUTDOWN,
2478                         "org.freedesktop.login1.reboot",
2479                         "org.freedesktop.login1.reboot-multiple-sessions",
2480                         "org.freedesktop.login1.reboot-ignore-inhibit",
2481                         NULL,
2482                         error);
2483 }
2484
2485 static int method_can_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2486         Manager *m = userdata;
2487
2488         return method_can_shutdown_or_sleep(
2489                         m, message,
2490                         INHIBIT_SHUTDOWN,
2491                         "org.freedesktop.login1.halt",
2492                         "org.freedesktop.login1.halt-multiple-sessions",
2493                         "org.freedesktop.login1.halt-ignore-inhibit",
2494                         NULL,
2495                         error);
2496 }
2497
2498 static int method_can_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2499         Manager *m = userdata;
2500
2501         return method_can_shutdown_or_sleep(
2502                         m, message,
2503                         INHIBIT_SLEEP,
2504                         "org.freedesktop.login1.suspend",
2505                         "org.freedesktop.login1.suspend-multiple-sessions",
2506                         "org.freedesktop.login1.suspend-ignore-inhibit",
2507                         "suspend",
2508                         error);
2509 }
2510
2511 static int method_can_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2512         Manager *m = userdata;
2513
2514         return method_can_shutdown_or_sleep(
2515                         m, message,
2516                         INHIBIT_SLEEP,
2517                         "org.freedesktop.login1.hibernate",
2518                         "org.freedesktop.login1.hibernate-multiple-sessions",
2519                         "org.freedesktop.login1.hibernate-ignore-inhibit",
2520                         "hibernate",
2521                         error);
2522 }
2523
2524 static int method_can_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2525         Manager *m = userdata;
2526
2527         return method_can_shutdown_or_sleep(
2528                         m, message,
2529                         INHIBIT_SLEEP,
2530                         "org.freedesktop.login1.hibernate",
2531                         "org.freedesktop.login1.hibernate-multiple-sessions",
2532                         "org.freedesktop.login1.hibernate-ignore-inhibit",
2533                         "hybrid-sleep",
2534                         error);
2535 }
2536
2537 static int property_get_reboot_to_firmware_setup(
2538                 sd_bus *bus,
2539                 const char *path,
2540                 const char *interface,
2541                 const char *property,
2542                 sd_bus_message *reply,
2543                 void *userdata,
2544                 sd_bus_error *error) {
2545 #if 0 /// elogind does not support EFI
2546         int r;
2547
2548         assert(bus);
2549         assert(reply);
2550         assert(userdata);
2551
2552         r = efi_get_reboot_to_firmware();
2553         if (r < 0 && r != -EOPNOTSUPP)
2554                 log_warning_errno(r, "Failed to determine reboot-to-firmware state: %m");
2555
2556         return sd_bus_message_append(reply, "b", r > 0);
2557 #else
2558         return sd_bus_message_append(reply, "b", false);
2559 #endif // 0
2560 }
2561
2562 static int method_set_reboot_to_firmware_setup(
2563                 sd_bus_message *message,
2564                 void *userdata,
2565                 sd_bus_error *error) {
2566
2567         int b, r;
2568         Manager *m = userdata;
2569
2570         assert(message);
2571         assert(m);
2572
2573         r = sd_bus_message_read(message, "b", &b);
2574         if (r < 0)
2575                 return r;
2576
2577         r = bus_verify_polkit_async(message,
2578                                     CAP_SYS_ADMIN,
2579                                     "org.freedesktop.login1.set-reboot-to-firmware-setup",
2580                                     NULL,
2581                                     false,
2582                                     UID_INVALID,
2583                                     &m->polkit_registry,
2584                                     error);
2585         if (r < 0)
2586                 return r;
2587         if (r == 0)
2588                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2589
2590 #if 0 /// elogind does not support EFI
2591         r = efi_set_reboot_to_firmware(b);
2592         if (r < 0)
2593                 return r;
2594 #endif // 0
2595
2596         return sd_bus_reply_method_return(message, NULL);
2597 }
2598
2599 static int method_can_reboot_to_firmware_setup(
2600                 sd_bus_message *message,
2601                 void *userdata,
2602                 sd_bus_error *error) {
2603
2604 #if 0 /// elogind does not support EFI
2605         int r;
2606         bool challenge;
2607         const char *result;
2608         Manager *m = userdata;
2609
2610         assert(message);
2611         assert(m);
2612
2613         r = efi_reboot_to_firmware_supported();
2614         if (r < 0) {
2615                 if (r != -EOPNOTSUPP)
2616                         log_warning_errno(errno, "Failed to determine whether reboot to firmware is supported: %m");
2617
2618                 return sd_bus_reply_method_return(message, "s", "na");
2619         }
2620
2621         r = bus_test_polkit(message,
2622                             CAP_SYS_ADMIN,
2623                             "org.freedesktop.login1.set-reboot-to-firmware-setup",
2624                             NULL,
2625                             UID_INVALID,
2626                             &challenge,
2627                             error);
2628         if (r < 0)
2629                 return r;
2630
2631         if (r > 0)
2632                 result = "yes";
2633         else if (challenge)
2634                 result = "challenge";
2635         else
2636                 result = "no";
2637
2638         return sd_bus_reply_method_return(message, "s", result);
2639 #else
2640         return sd_bus_reply_method_return(message, "s", "no");
2641 #endif // 0
2642 }
2643
2644 static int method_set_wall_message(
2645                 sd_bus_message *message,
2646                 void *userdata,
2647                 sd_bus_error *error) {
2648
2649         int r;
2650         Manager *m = userdata;
2651         char *wall_message;
2652         int enable_wall_messages;
2653
2654         assert(message);
2655         assert(m);
2656
2657         r = sd_bus_message_read(message, "sb", &wall_message, &enable_wall_messages);
2658         if (r < 0)
2659                 return r;
2660
2661 #if 0 /// elogind only calls this for shutdown/reboot, which already needs authorization.
2662         r = bus_verify_polkit_async(message,
2663                                     CAP_SYS_ADMIN,
2664                                     "org.freedesktop.login1.set-wall-message",
2665                                     NULL,
2666                                     false,
2667                                     UID_INVALID,
2668                                     &m->polkit_registry,
2669                                     error);
2670         if (r < 0)
2671                 return r;
2672         if (r == 0)
2673                 return 1; /* Will call us back */
2674 #endif // 0
2675
2676         r = free_and_strdup(&m->wall_message, empty_to_null(wall_message));
2677         if (r < 0)
2678                 return log_oom();
2679
2680         m->enable_wall_messages = enable_wall_messages;
2681
2682         return sd_bus_reply_method_return(message, NULL);
2683 }
2684
2685 static int method_inhibit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2686         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2687         const char *who, *why, *what, *mode;
2688         _cleanup_free_ char *id = NULL;
2689         _cleanup_close_ int fifo_fd = -1;
2690         Manager *m = userdata;
2691         Inhibitor *i = NULL;
2692         InhibitMode mm;
2693         InhibitWhat w;
2694         pid_t pid;
2695         uid_t uid;
2696         int r;
2697
2698         assert(message);
2699         assert(m);
2700
2701         r = sd_bus_message_read(message, "ssss", &what, &who, &why, &mode);
2702         if (r < 0)
2703                 return r;
2704
2705         w = inhibit_what_from_string(what);
2706         if (w <= 0)
2707                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid what specification %s", what);
2708
2709         mm = inhibit_mode_from_string(mode);
2710         if (mm < 0)
2711                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid mode specification %s", mode);
2712
2713         /* Delay is only supported for shutdown/sleep */
2714         if (mm == INHIBIT_DELAY && (w & ~(INHIBIT_SHUTDOWN|INHIBIT_SLEEP)))
2715                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Delay inhibitors only supported for shutdown and sleep");
2716
2717         /* Don't allow taking delay locks while we are already
2718          * executing the operation. We shouldn't create the impression
2719          * that the lock was successful if the machine is about to go
2720          * down/suspend any moment. */
2721         if (m->action_what & w)
2722                 return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS, "The operation inhibition has been requested for is already running");
2723
2724         r = bus_verify_polkit_async(
2725                         message,
2726                         CAP_SYS_BOOT,
2727                         w == INHIBIT_SHUTDOWN             ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-shutdown" : "org.freedesktop.login1.inhibit-delay-shutdown") :
2728                         w == INHIBIT_SLEEP                ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-sleep"    : "org.freedesktop.login1.inhibit-delay-sleep") :
2729                         w == INHIBIT_IDLE                 ? "org.freedesktop.login1.inhibit-block-idle" :
2730                         w == INHIBIT_HANDLE_POWER_KEY     ? "org.freedesktop.login1.inhibit-handle-power-key" :
2731                         w == INHIBIT_HANDLE_SUSPEND_KEY   ? "org.freedesktop.login1.inhibit-handle-suspend-key" :
2732                         w == INHIBIT_HANDLE_HIBERNATE_KEY ? "org.freedesktop.login1.inhibit-handle-hibernate-key" :
2733                                                             "org.freedesktop.login1.inhibit-handle-lid-switch",
2734                         NULL,
2735                         false,
2736                         UID_INVALID,
2737                         &m->polkit_registry,
2738                         error);
2739         if (r < 0)
2740                 return r;
2741         if (r == 0)
2742                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2743
2744         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID|SD_BUS_CREDS_PID, &creds);
2745         if (r < 0)
2746                 return r;
2747
2748         r = sd_bus_creds_get_euid(creds, &uid);
2749         if (r < 0)
2750                 return r;
2751
2752         r = sd_bus_creds_get_pid(creds, &pid);
2753         if (r < 0)
2754                 return r;
2755
2756         if (hashmap_size(m->inhibitors) >= m->inhibitors_max)
2757                 return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED, "Maximum number of inhibitors (%" PRIu64 ") reached, refusing further inhibitors.", m->inhibitors_max);
2758
2759         do {
2760                 id = mfree(id);
2761
2762                 if (asprintf(&id, "%lu", ++m->inhibit_counter) < 0)
2763                         return -ENOMEM;
2764
2765         } while (hashmap_get(m->inhibitors, id));
2766
2767         r = manager_add_inhibitor(m, id, &i);
2768         if (r < 0)
2769                 return r;
2770
2771         i->what = w;
2772         i->mode = mm;
2773         i->pid = pid;
2774         i->uid = uid;
2775         i->why = strdup(why);
2776         i->who = strdup(who);
2777
2778         if (!i->why || !i->who) {
2779                 r = -ENOMEM;
2780                 goto fail;
2781         }
2782
2783         fifo_fd = inhibitor_create_fifo(i);
2784         if (fifo_fd < 0) {
2785                 r = fifo_fd;
2786                 goto fail;
2787         }
2788
2789         inhibitor_start(i);
2790
2791         return sd_bus_reply_method_return(message, "h", fifo_fd);
2792
2793 fail:
2794         if (i)
2795                 inhibitor_free(i);
2796
2797         return r;
2798 }
2799
2800 const sd_bus_vtable manager_vtable[] = {
2801         SD_BUS_VTABLE_START(0),
2802
2803         SD_BUS_WRITABLE_PROPERTY("EnableWallMessages", "b", NULL, NULL, offsetof(Manager, enable_wall_messages), 0),
2804         SD_BUS_WRITABLE_PROPERTY("WallMessage", "s", NULL, NULL, offsetof(Manager, wall_message), 0),
2805
2806 #if 0 /// UNNEEDED by elogind
2807         SD_BUS_PROPERTY("NAutoVTs", "u", NULL, offsetof(Manager, n_autovts), SD_BUS_VTABLE_PROPERTY_CONST),
2808 #endif // 0
2809         SD_BUS_PROPERTY("KillOnlyUsers", "as", NULL, offsetof(Manager, kill_only_users), SD_BUS_VTABLE_PROPERTY_CONST),
2810         SD_BUS_PROPERTY("KillExcludeUsers", "as", NULL, offsetof(Manager, kill_exclude_users), SD_BUS_VTABLE_PROPERTY_CONST),
2811         SD_BUS_PROPERTY("KillUserProcesses", "b", NULL, offsetof(Manager, kill_user_processes), SD_BUS_VTABLE_PROPERTY_CONST),
2812         SD_BUS_PROPERTY("RebootToFirmwareSetup", "b", property_get_reboot_to_firmware_setup, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2813         SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
2814         SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
2815         SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
2816         SD_BUS_PROPERTY("BlockInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
2817         SD_BUS_PROPERTY("DelayInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
2818         SD_BUS_PROPERTY("InhibitDelayMaxUSec", "t", NULL, offsetof(Manager, inhibit_delay_max), SD_BUS_VTABLE_PROPERTY_CONST),
2819         SD_BUS_PROPERTY("HandlePowerKey", "s", property_get_handle_action, offsetof(Manager, handle_power_key), SD_BUS_VTABLE_PROPERTY_CONST),
2820         SD_BUS_PROPERTY("HandleSuspendKey", "s", property_get_handle_action, offsetof(Manager, handle_suspend_key), SD_BUS_VTABLE_PROPERTY_CONST),
2821         SD_BUS_PROPERTY("HandleHibernateKey", "s", property_get_handle_action, offsetof(Manager, handle_hibernate_key), SD_BUS_VTABLE_PROPERTY_CONST),
2822         SD_BUS_PROPERTY("HandleLidSwitch", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch), SD_BUS_VTABLE_PROPERTY_CONST),
2823         SD_BUS_PROPERTY("HandleLidSwitchExternalPower", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch_ep), SD_BUS_VTABLE_PROPERTY_CONST),
2824         SD_BUS_PROPERTY("HandleLidSwitchDocked", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch_docked), SD_BUS_VTABLE_PROPERTY_CONST),
2825         SD_BUS_PROPERTY("HoldoffTimeoutUSec", "t", NULL, offsetof(Manager, holdoff_timeout_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2826         SD_BUS_PROPERTY("IdleAction", "s", property_get_handle_action, offsetof(Manager, idle_action), SD_BUS_VTABLE_PROPERTY_CONST),
2827         SD_BUS_PROPERTY("IdleActionUSec", "t", NULL, offsetof(Manager, idle_action_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2828         SD_BUS_PROPERTY("PreparingForShutdown", "b", property_get_preparing, 0, 0),
2829         SD_BUS_PROPERTY("PreparingForSleep", "b", property_get_preparing, 0, 0),
2830         SD_BUS_PROPERTY("ScheduledShutdown", "(st)", property_get_scheduled_shutdown, 0, 0),
2831         SD_BUS_PROPERTY("Docked", "b", property_get_docked, 0, 0),
2832         SD_BUS_PROPERTY("RemoveIPC", "b", bus_property_get_bool, offsetof(Manager, remove_ipc), SD_BUS_VTABLE_PROPERTY_CONST),
2833         SD_BUS_PROPERTY("RuntimeDirectorySize", "t", bus_property_get_size, offsetof(Manager, runtime_dir_size), SD_BUS_VTABLE_PROPERTY_CONST),
2834         SD_BUS_PROPERTY("InhibitorsMax", "t", NULL, offsetof(Manager, inhibitors_max), SD_BUS_VTABLE_PROPERTY_CONST),
2835         SD_BUS_PROPERTY("NCurrentInhibitors", "t", property_get_current_inhibitors, 0, 0),
2836         SD_BUS_PROPERTY("SessionsMax", "t", NULL, offsetof(Manager, sessions_max), SD_BUS_VTABLE_PROPERTY_CONST),
2837         SD_BUS_PROPERTY("NCurrentSessions", "t", property_get_current_sessions, 0, 0),
2838         SD_BUS_PROPERTY("UserTasksMax", "t", NULL, offsetof(Manager, user_tasks_max), SD_BUS_VTABLE_PROPERTY_CONST),
2839
2840         SD_BUS_METHOD("GetSession", "s", "o", method_get_session, SD_BUS_VTABLE_UNPRIVILEGED),
2841         SD_BUS_METHOD("GetSessionByPID", "u", "o", method_get_session_by_pid, SD_BUS_VTABLE_UNPRIVILEGED),
2842         SD_BUS_METHOD("GetUser", "u", "o", method_get_user, SD_BUS_VTABLE_UNPRIVILEGED),
2843         SD_BUS_METHOD("GetUserByPID", "u", "o", method_get_user_by_pid, SD_BUS_VTABLE_UNPRIVILEGED),
2844         SD_BUS_METHOD("GetSeat", "s", "o", method_get_seat, SD_BUS_VTABLE_UNPRIVILEGED),
2845         SD_BUS_METHOD("ListSessions", NULL, "a(susso)", method_list_sessions, SD_BUS_VTABLE_UNPRIVILEGED),
2846         SD_BUS_METHOD("ListUsers", NULL, "a(uso)", method_list_users, SD_BUS_VTABLE_UNPRIVILEGED),
2847         SD_BUS_METHOD("ListSeats", NULL, "a(so)", method_list_seats, SD_BUS_VTABLE_UNPRIVILEGED),
2848         SD_BUS_METHOD("ListInhibitors", NULL, "a(ssssuu)", method_list_inhibitors, SD_BUS_VTABLE_UNPRIVILEGED),
2849         SD_BUS_METHOD("CreateSession", "uusssssussbssa(sv)", "soshusub", method_create_session, 0),
2850         SD_BUS_METHOD("ReleaseSession", "s", NULL, method_release_session, 0),
2851         SD_BUS_METHOD("ActivateSession", "s", NULL, method_activate_session, SD_BUS_VTABLE_UNPRIVILEGED),
2852         SD_BUS_METHOD("ActivateSessionOnSeat", "ss", NULL, method_activate_session_on_seat, SD_BUS_VTABLE_UNPRIVILEGED),
2853         SD_BUS_METHOD("LockSession", "s", NULL, method_lock_session, SD_BUS_VTABLE_UNPRIVILEGED),
2854         SD_BUS_METHOD("UnlockSession", "s", NULL, method_lock_session, SD_BUS_VTABLE_UNPRIVILEGED),
2855         SD_BUS_METHOD("LockSessions", NULL, NULL, method_lock_sessions, SD_BUS_VTABLE_UNPRIVILEGED),
2856         SD_BUS_METHOD("UnlockSessions", NULL, NULL, method_lock_sessions, SD_BUS_VTABLE_UNPRIVILEGED),
2857         SD_BUS_METHOD("KillSession", "ssi", NULL, method_kill_session, SD_BUS_VTABLE_UNPRIVILEGED),
2858         SD_BUS_METHOD("KillUser", "ui", NULL, method_kill_user, SD_BUS_VTABLE_UNPRIVILEGED),
2859         SD_BUS_METHOD("TerminateSession", "s", NULL, method_terminate_session, SD_BUS_VTABLE_UNPRIVILEGED),
2860         SD_BUS_METHOD("TerminateUser", "u", NULL, method_terminate_user, SD_BUS_VTABLE_UNPRIVILEGED),
2861         SD_BUS_METHOD("TerminateSeat", "s", NULL, method_terminate_seat, SD_BUS_VTABLE_UNPRIVILEGED),
2862         SD_BUS_METHOD("SetUserLinger", "ubb", NULL, method_set_user_linger, SD_BUS_VTABLE_UNPRIVILEGED),
2863         SD_BUS_METHOD("AttachDevice", "ssb", NULL, method_attach_device, SD_BUS_VTABLE_UNPRIVILEGED),
2864         SD_BUS_METHOD("FlushDevices", "b", NULL, method_flush_devices, SD_BUS_VTABLE_UNPRIVILEGED),
2865         SD_BUS_METHOD("PowerOff", "b", NULL, method_poweroff, SD_BUS_VTABLE_UNPRIVILEGED),
2866         SD_BUS_METHOD("Reboot", "b", NULL, method_reboot, SD_BUS_VTABLE_UNPRIVILEGED),
2867         SD_BUS_METHOD("Halt", "b", NULL, method_halt, SD_BUS_VTABLE_UNPRIVILEGED),
2868         SD_BUS_METHOD("Suspend", "b", NULL, method_suspend, SD_BUS_VTABLE_UNPRIVILEGED),
2869         SD_BUS_METHOD("Hibernate", "b", NULL, method_hibernate, SD_BUS_VTABLE_UNPRIVILEGED),
2870         SD_BUS_METHOD("HybridSleep", "b", NULL, method_hybrid_sleep, SD_BUS_VTABLE_UNPRIVILEGED),
2871         SD_BUS_METHOD("CanPowerOff", NULL, "s", method_can_poweroff, SD_BUS_VTABLE_UNPRIVILEGED),
2872         SD_BUS_METHOD("CanReboot", NULL, "s", method_can_reboot, SD_BUS_VTABLE_UNPRIVILEGED),
2873         SD_BUS_METHOD("CanHalt", NULL, "s", method_can_halt, SD_BUS_VTABLE_UNPRIVILEGED),
2874         SD_BUS_METHOD("CanSuspend", NULL, "s", method_can_suspend, SD_BUS_VTABLE_UNPRIVILEGED),
2875         SD_BUS_METHOD("CanHibernate", NULL, "s", method_can_hibernate, SD_BUS_VTABLE_UNPRIVILEGED),
2876         SD_BUS_METHOD("CanHybridSleep", NULL, "s", method_can_hybrid_sleep, SD_BUS_VTABLE_UNPRIVILEGED),
2877         SD_BUS_METHOD("ScheduleShutdown", "st", NULL, method_schedule_shutdown, SD_BUS_VTABLE_UNPRIVILEGED),
2878         SD_BUS_METHOD("CancelScheduledShutdown", NULL, "b", method_cancel_scheduled_shutdown, SD_BUS_VTABLE_UNPRIVILEGED),
2879         SD_BUS_METHOD("Inhibit", "ssss", "h", method_inhibit, SD_BUS_VTABLE_UNPRIVILEGED),
2880         SD_BUS_METHOD("CanRebootToFirmwareSetup", NULL, "s", method_can_reboot_to_firmware_setup, SD_BUS_VTABLE_UNPRIVILEGED),
2881         SD_BUS_METHOD("SetRebootToFirmwareSetup", "b", NULL, method_set_reboot_to_firmware_setup, SD_BUS_VTABLE_UNPRIVILEGED),
2882         SD_BUS_METHOD("SetWallMessage", "sb", NULL, method_set_wall_message, SD_BUS_VTABLE_UNPRIVILEGED),
2883
2884         SD_BUS_SIGNAL("SessionNew", "so", 0),
2885         SD_BUS_SIGNAL("SessionRemoved", "so", 0),
2886         SD_BUS_SIGNAL("UserNew", "uo", 0),
2887         SD_BUS_SIGNAL("UserRemoved", "uo", 0),
2888         SD_BUS_SIGNAL("SeatNew", "so", 0),
2889         SD_BUS_SIGNAL("SeatRemoved", "so", 0),
2890         SD_BUS_SIGNAL("PrepareForShutdown", "b", 0),
2891         SD_BUS_SIGNAL("PrepareForSleep", "b", 0),
2892
2893         SD_BUS_VTABLE_END
2894 };
2895
2896 #if 0 /// UNNEEDED by elogind
2897 static int session_jobs_reply(Session *s, const char *unit, const char *result) {
2898         int r = 0;
2899
2900         assert(s);
2901         assert(unit);
2902
2903         if (!s->started)
2904                 return r;
2905
2906         if (streq(result, "done"))
2907                 r = session_send_create_reply(s, NULL);
2908         else {
2909                 _cleanup_(sd_bus_error_free) sd_bus_error e = SD_BUS_ERROR_NULL;
2910
2911                 sd_bus_error_setf(&e, BUS_ERROR_JOB_FAILED, "Start job for unit %s failed with '%s'", unit, result);
2912                 r = session_send_create_reply(s, &e);
2913         }
2914
2915         return r;
2916 }
2917
2918 int match_job_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2919         const char *path, *result, *unit;
2920         Manager *m = userdata;
2921         Session *session;
2922         uint32_t id;
2923         User *user;
2924         int r;
2925
2926         assert(message);
2927         assert(m);
2928
2929         r = sd_bus_message_read(message, "uoss", &id, &path, &unit, &result);
2930         if (r < 0) {
2931                 bus_log_parse_error(r);
2932                 return 0;
2933         }
2934
2935         if (m->action_job && streq(m->action_job, path)) {
2936                 log_info("Operation '%s' finished.", inhibit_what_to_string(m->action_what));
2937
2938                 /* Tell people that they now may take a lock again */
2939                 (void) send_prepare_for(m, m->action_what, false);
2940
2941                 m->action_job = mfree(m->action_job);
2942                 m->action_unit = NULL;
2943                 m->action_what = 0;
2944                 return 0;
2945         }
2946
2947         session = hashmap_get(m->session_units, unit);
2948         if (session && streq_ptr(path, session->scope_job)) {
2949                 session->scope_job = mfree(session->scope_job);
2950                 session_jobs_reply(session, unit, result);
2951
2952                 session_save(session);
2953                 user_save(session->user);
2954                 session_add_to_gc_queue(session);
2955         }
2956
2957         user = hashmap_get(m->user_units, unit);
2958         if (user &&
2959             (streq_ptr(path, user->service_job) ||
2960              streq_ptr(path, user->slice_job))) {
2961
2962                 if (streq_ptr(path, user->service_job))
2963                         user->service_job = mfree(user->service_job);
2964
2965                 if (streq_ptr(path, user->slice_job))
2966                         user->slice_job = mfree(user->slice_job);
2967
2968                 LIST_FOREACH(sessions_by_user, session, user->sessions)
2969                         session_jobs_reply(session, unit, result);
2970
2971                 user_save(user);
2972                 user_add_to_gc_queue(user);
2973         }
2974
2975         return 0;
2976 }
2977
2978 int match_unit_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2979         const char *path, *unit;
2980         Manager *m = userdata;
2981         Session *session;
2982         User *user;
2983         int r;
2984
2985         assert(message);
2986         assert(m);
2987
2988         r = sd_bus_message_read(message, "so", &unit, &path);
2989         if (r < 0) {
2990                 bus_log_parse_error(r);
2991                 return 0;
2992         }
2993
2994         session = hashmap_get(m->session_units, unit);
2995         if (session)
2996                 session_add_to_gc_queue(session);
2997
2998         user = hashmap_get(m->user_units, unit);
2999         if (user)
3000                 user_add_to_gc_queue(user);
3001
3002         return 0;
3003 }
3004
3005 int match_properties_changed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3006         _cleanup_free_ char *unit = NULL;
3007         Manager *m = userdata;
3008         const char *path;
3009         Session *session;
3010         User *user;
3011         int r;
3012
3013         assert(message);
3014         assert(m);
3015
3016         path = sd_bus_message_get_path(message);
3017         if (!path)
3018                 return 0;
3019
3020         r = unit_name_from_dbus_path(path, &unit);
3021         if (r == -EINVAL) /* not a unit */
3022                 return 0;
3023         if (r < 0) {
3024                 log_oom();
3025                 return 0;
3026         }
3027
3028         session = hashmap_get(m->session_units, unit);
3029         if (session)
3030                 session_add_to_gc_queue(session);
3031
3032         user = hashmap_get(m->user_units, unit);
3033         if (user)
3034                 user_add_to_gc_queue(user);
3035
3036         return 0;
3037 }
3038
3039 int match_reloading(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3040         Manager *m = userdata;
3041         Session *session;
3042         Iterator i;
3043         int b, r;
3044
3045         assert(message);
3046         assert(m);
3047
3048         r = sd_bus_message_read(message, "b", &b);
3049         if (r < 0) {
3050                 bus_log_parse_error(r);
3051                 return 0;
3052         }
3053
3054         if (b)
3055                 return 0;
3056
3057         /* systemd finished reloading, let's recheck all our sessions */
3058         log_debug("System manager has been reloaded, rechecking sessions...");
3059
3060         HASHMAP_FOREACH(session, m->sessions, i)
3061                 session_add_to_gc_queue(session);
3062
3063         return 0;
3064 }
3065 #endif // 0
3066
3067 int manager_send_changed(Manager *manager, const char *property, ...) {
3068         char **l;
3069
3070         assert(manager);
3071
3072         l = strv_from_stdarg_alloca(property);
3073
3074         return sd_bus_emit_properties_changed_strv(
3075                         manager->bus,
3076                         "/org/freedesktop/login1",
3077                         "org.freedesktop.login1.Manager",
3078                         l);
3079 }
3080
3081 #if 0 /// UNNEEDED by elogind
3082 static int strdup_job(sd_bus_message *reply, char **job) {
3083         const char *j;
3084         char *copy;
3085         int r;
3086
3087         r = sd_bus_message_read(reply, "o", &j);
3088         if (r < 0)
3089                 return r;
3090
3091         copy = strdup(j);
3092         if (!copy)
3093                 return -ENOMEM;
3094
3095         *job = copy;
3096         return 1;
3097 }
3098
3099 int manager_start_slice(
3100                 Manager *manager,
3101                 const char *slice,
3102                 const char *description,
3103                 const char *after,
3104                 const char *after2,
3105                 uint64_t tasks_max,
3106                 sd_bus_error *error,
3107                 char **job) {
3108
3109         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
3110         int r;
3111
3112         assert(manager);
3113         assert(slice);
3114         assert(job);
3115
3116         r = sd_bus_message_new_method_call(
3117                         manager->bus,
3118                         &m,
3119                         "org.freedesktop.systemd1",
3120                         "/org/freedesktop/systemd1",
3121                         "org.freedesktop.systemd1.Manager",
3122                         "StartTransientUnit");
3123         if (r < 0)
3124                 return r;
3125
3126         r = sd_bus_message_append(m, "ss", strempty(slice), "fail");
3127         if (r < 0)
3128                 return r;
3129
3130         r = sd_bus_message_open_container(m, 'a', "(sv)");
3131         if (r < 0)
3132                 return r;
3133
3134         if (!isempty(description)) {
3135                 r = sd_bus_message_append(m, "(sv)", "Description", "s", description);
3136                 if (r < 0)
3137                         return r;
3138         }
3139
3140         if (!isempty(after)) {
3141                 r = sd_bus_message_append(m, "(sv)", "After", "as", 1, after);
3142                 if (r < 0)
3143                         return r;
3144         }
3145
3146         if (!isempty(after2)) {
3147                 r = sd_bus_message_append(m, "(sv)", "After", "as", 1, after2);
3148                 if (r < 0)
3149                         return r;
3150         }
3151
3152         r = sd_bus_message_append(m, "(sv)", "TasksMax", "t", tasks_max);
3153         if (r < 0)
3154                 return r;
3155
3156         r = sd_bus_message_close_container(m);
3157         if (r < 0)
3158                 return r;
3159
3160         r = sd_bus_message_append(m, "a(sa(sv))", 0);
3161         if (r < 0)
3162                 return r;
3163
3164         r = sd_bus_call(manager->bus, m, 0, error, &reply);
3165         if (r < 0)
3166                 return r;
3167
3168         return strdup_job(reply, job);
3169 }
3170
3171 int manager_start_scope(
3172                 Manager *manager,
3173                 const char *scope,
3174                 pid_t pid,
3175                 const char *slice,
3176                 const char *description,
3177                 const char *after,
3178                 const char *after2,
3179                 uint64_t tasks_max,
3180                 sd_bus_error *error,
3181                 char **job) {
3182
3183         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
3184         int r;
3185
3186         assert(manager);
3187         assert(scope);
3188         assert(pid > 1);
3189         assert(job);
3190
3191         r = sd_bus_message_new_method_call(
3192                         manager->bus,
3193                         &m,
3194                         "org.freedesktop.systemd1",
3195                         "/org/freedesktop/systemd1",
3196                         "org.freedesktop.systemd1.Manager",
3197                         "StartTransientUnit");
3198         if (r < 0)
3199                 return r;
3200
3201         r = sd_bus_message_append(m, "ss", strempty(scope), "fail");
3202         if (r < 0)
3203                 return r;
3204
3205         r = sd_bus_message_open_container(m, 'a', "(sv)");
3206         if (r < 0)
3207                 return r;
3208
3209         if (!isempty(slice)) {
3210                 r = sd_bus_message_append(m, "(sv)", "Slice", "s", slice);
3211                 if (r < 0)
3212                         return r;
3213         }
3214
3215         if (!isempty(description)) {
3216                 r = sd_bus_message_append(m, "(sv)", "Description", "s", description);
3217                 if (r < 0)
3218                         return r;
3219         }
3220
3221         if (!isempty(after)) {
3222                 r = sd_bus_message_append(m, "(sv)", "After", "as", 1, after);
3223                 if (r < 0)
3224                         return r;
3225         }
3226
3227         if (!isempty(after2)) {
3228                 r = sd_bus_message_append(m, "(sv)", "After", "as", 1, after2);
3229                 if (r < 0)
3230                         return r;
3231         }
3232
3233         /* cgroup empty notification is not available in containers
3234          * currently. To make this less problematic, let's shorten the
3235          * stop timeout for sessions, so that we don't wait
3236          * forever. */
3237
3238         /* Make sure that the session shells are terminated with
3239          * SIGHUP since bash and friends tend to ignore SIGTERM */
3240         r = sd_bus_message_append(m, "(sv)", "SendSIGHUP", "b", true);
3241         if (r < 0)
3242                 return r;
3243
3244         r = sd_bus_message_append(m, "(sv)", "PIDs", "au", 1, pid);
3245         if (r < 0)
3246                 return r;
3247
3248         r = sd_bus_message_append(m, "(sv)", "TasksMax", "t", tasks_max);
3249         if (r < 0)
3250                 return r;
3251
3252         r = sd_bus_message_close_container(m);
3253         if (r < 0)
3254                 return r;
3255
3256         r = sd_bus_message_append(m, "a(sa(sv))", 0);
3257         if (r < 0)
3258                 return r;
3259
3260         r = sd_bus_call(manager->bus, m, 0, error, &reply);
3261         if (r < 0)
3262                 return r;
3263
3264         return strdup_job(reply, job);
3265 }
3266
3267 int manager_start_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) {
3268         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
3269         int r;
3270
3271         assert(manager);
3272         assert(unit);
3273         assert(job);
3274
3275         r = sd_bus_call_method(
3276                         manager->bus,
3277                         "org.freedesktop.systemd1",
3278                         "/org/freedesktop/systemd1",
3279                         "org.freedesktop.systemd1.Manager",
3280                         "StartUnit",
3281                         error,
3282                         &reply,
3283                         "ss", unit, "replace");
3284         if (r < 0)
3285                 return r;
3286
3287         return strdup_job(reply, job);
3288 }
3289
3290 int manager_stop_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) {
3291         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
3292         int r;
3293
3294         assert(manager);
3295         assert(unit);
3296         assert(job);
3297
3298         r = sd_bus_call_method(
3299                         manager->bus,
3300                         "org.freedesktop.systemd1",
3301                         "/org/freedesktop/systemd1",
3302                         "org.freedesktop.systemd1.Manager",
3303                         "StopUnit",
3304                         error,
3305                         &reply,
3306                         "ss", unit, "fail");
3307         if (r < 0) {
3308                 if (sd_bus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT) ||
3309                     sd_bus_error_has_name(error, BUS_ERROR_LOAD_FAILED)) {
3310
3311                         *job = NULL;
3312                         sd_bus_error_free(error);
3313                         return 0;
3314                 }
3315
3316                 return r;
3317         }
3318
3319         return strdup_job(reply, job);
3320 }
3321
3322 int manager_abandon_scope(Manager *manager, const char *scope, sd_bus_error *error) {
3323         _cleanup_free_ char *path = NULL;
3324         int r;
3325
3326         assert(manager);
3327         assert(scope);
3328
3329         path = unit_dbus_path_from_name(scope);
3330         if (!path)
3331                 return -ENOMEM;
3332
3333         r = sd_bus_call_method(
3334                         manager->bus,
3335                         "org.freedesktop.systemd1",
3336                         path,
3337                         "org.freedesktop.systemd1.Scope",
3338                         "Abandon",
3339                         error,
3340                         NULL,
3341                         NULL);
3342         if (r < 0) {
3343                 if (sd_bus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT) ||
3344                     sd_bus_error_has_name(error, BUS_ERROR_LOAD_FAILED) ||
3345                     sd_bus_error_has_name(error, BUS_ERROR_SCOPE_NOT_RUNNING)) {
3346                         sd_bus_error_free(error);
3347                         return 0;
3348                 }
3349
3350                 return r;
3351         }
3352
3353         return 1;
3354 }
3355
3356 int manager_kill_unit(Manager *manager, const char *unit, KillWho who, int signo, sd_bus_error *error) {
3357         assert(manager);
3358         assert(unit);
3359
3360         return sd_bus_call_method(
3361                         manager->bus,
3362                         "org.freedesktop.systemd1",
3363                         "/org/freedesktop/systemd1",
3364                         "org.freedesktop.systemd1.Manager",
3365                         "KillUnit",
3366                         error,
3367                         NULL,
3368                         "ssi", unit, who == KILL_LEADER ? "main" : "all", signo);
3369 }
3370
3371 int manager_unit_is_active(Manager *manager, const char *unit) {
3372         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
3373         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
3374         _cleanup_free_ char *path = NULL;
3375         const char *state;
3376         int r;
3377
3378         assert(manager);
3379         assert(unit);
3380
3381         path = unit_dbus_path_from_name(unit);
3382         if (!path)
3383                 return -ENOMEM;
3384
3385         r = sd_bus_get_property(
3386                         manager->bus,
3387                         "org.freedesktop.systemd1",
3388                         path,
3389                         "org.freedesktop.systemd1.Unit",
3390                         "ActiveState",
3391                         &error,
3392                         &reply,
3393                         "s");
3394         if (r < 0) {
3395                 /* systemd might have droppped off momentarily, let's
3396                  * not make this an error */
3397                 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_NO_REPLY) ||
3398                     sd_bus_error_has_name(&error, SD_BUS_ERROR_DISCONNECTED))
3399                         return true;
3400
3401                 /* If the unit is already unloaded then it's not
3402                  * active */
3403                 if (sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_UNIT) ||
3404                     sd_bus_error_has_name(&error, BUS_ERROR_LOAD_FAILED))
3405                         return false;
3406
3407                 return r;
3408         }
3409
3410         r = sd_bus_message_read(reply, "s", &state);
3411         if (r < 0)
3412                 return -EINVAL;
3413
3414         return !streq(state, "inactive") && !streq(state, "failed");
3415 }
3416
3417 int manager_job_is_active(Manager *manager, const char *path) {
3418         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
3419         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
3420         int r;
3421
3422         assert(manager);
3423         assert(path);
3424
3425         r = sd_bus_get_property(
3426                         manager->bus,
3427                         "org.freedesktop.systemd1",
3428                         path,
3429                         "org.freedesktop.systemd1.Job",
3430                         "State",
3431                         &error,
3432                         &reply,
3433                         "s");
3434         if (r < 0) {
3435                 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_NO_REPLY) ||
3436                     sd_bus_error_has_name(&error, SD_BUS_ERROR_DISCONNECTED))
3437                         return true;
3438
3439                 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_OBJECT))
3440                         return false;
3441
3442                 return r;
3443         }
3444
3445         /* We don't actually care about the state really. The fact
3446          * that we could read the job state is enough for us */
3447
3448         return true;
3449 }
3450 #endif // 0