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 #if 0 /// elogind-dbus.c needs to access this
1695 static int manager_inhibit_timeout_handler(
1696 #else
1697 int manager_inhibit_timeout_handler(
1698 #endif // 0
1699                         sd_event_source *s,
1700                         uint64_t usec,
1701                         void *userdata) {
1702
1703         Manager *manager = userdata;
1704         int r;
1705
1706         assert(manager);
1707         assert(manager->inhibit_timeout_source == s);
1708
1709         r = manager_dispatch_delayed(manager, true);
1710         return (r < 0) ? r : 0;
1711 }
1712
1713 #if 0 /// elogind does not have unit_name but action
1714 static int delay_shutdown_or_sleep(
1715                 Manager *m,
1716                 InhibitWhat w,
1717                 const char *unit_name) {
1718 #else
1719 int delay_shutdown_or_sleep(
1720                 Manager *m,
1721                 InhibitWhat w,
1722                 HandleAction action) {
1723 #endif // 0
1724         int r;
1725         usec_t timeout_val;
1726
1727         assert(m);
1728         assert(w >= 0);
1729         assert(w < _INHIBIT_WHAT_MAX);
1730 #if 0 /// UNNEEDED by elogind
1731         assert(unit_name);
1732 #endif // 0
1733
1734         timeout_val = now(CLOCK_MONOTONIC) + m->inhibit_delay_max;
1735
1736         if (m->inhibit_timeout_source) {
1737                 r = sd_event_source_set_time(m->inhibit_timeout_source, timeout_val);
1738                 if (r < 0)
1739                         return log_error_errno(r, "sd_event_source_set_time() failed: %m");
1740
1741                 r = sd_event_source_set_enabled(m->inhibit_timeout_source, SD_EVENT_ONESHOT);
1742                 if (r < 0)
1743                         return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
1744         } else {
1745                 r = sd_event_add_time(m->event, &m->inhibit_timeout_source, CLOCK_MONOTONIC,
1746                                       timeout_val, 0, manager_inhibit_timeout_handler, m);
1747                 if (r < 0)
1748                         return r;
1749         }
1750
1751 #if 0 /// elogind does not have unit_name but pendig_action
1752         m->action_unit = unit_name;
1753 #else
1754         m->pending_action = action;
1755 #endif // 0
1756         m->action_what = w;
1757
1758         return 0;
1759 }
1760
1761 int bus_manager_shutdown_or_sleep_now_or_later(
1762                 Manager *m,
1763 #if 0 /// elogind has HandleAction instead of const char* unit_name
1764                 const char *unit_name,
1765 #else
1766                 HandleAction unit_name,
1767 #endif // 0
1768                 InhibitWhat w,
1769                 sd_bus_error *error) {
1770         bool delayed;
1771         int r;
1772
1773         assert(m);
1774 #if 0 /// for elogind only w has to be checked.
1775         assert(unit_name);
1776         assert(w > 0);
1777         assert(w <= _INHIBIT_WHAT_MAX);
1778         assert(!m->action_job);
1779 #else
1780         assert(w > 0);
1781         assert(w <= _INHIBIT_WHAT_MAX);
1782 #endif // 0
1783
1784         /* Tell everybody to prepare for shutdown/sleep */
1785         (void) send_prepare_for(m, w, true);
1786
1787         delayed =
1788                 m->inhibit_delay_max > 0 &&
1789                 manager_is_inhibited(m, w, INHIBIT_DELAY, NULL, false, false, 0, NULL);
1790
1791         log_debug_elogind("%s called for %s (%sdelayed)", __FUNCTION__,
1792                           handle_action_to_string(unit_name),
1793                           delayed ? "" : "NOT ");
1794
1795         if (delayed)
1796                 /* Shutdown is delayed, keep in mind what we
1797                  * want to do, and start a timeout */
1798                 r = delay_shutdown_or_sleep(m, w, unit_name);
1799         else
1800                 /* Shutdown is not delayed, execute it
1801                  * immediately */
1802                 r = execute_shutdown_or_sleep(m, w, unit_name, error);
1803
1804         return r;
1805 }
1806
1807 static int verify_shutdown_creds(
1808                 Manager *m,
1809                 sd_bus_message *message,
1810                 InhibitWhat w,
1811                 bool interactive,
1812                 const char *action,
1813                 const char *action_multiple_sessions,
1814                 const char *action_ignore_inhibit,
1815                 sd_bus_error *error) {
1816
1817         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
1818         bool multiple_sessions, blocked;
1819         uid_t uid;
1820         int r;
1821
1822         assert(m);
1823         assert(message);
1824         assert(w >= 0);
1825         assert(w <= _INHIBIT_WHAT_MAX);
1826
1827         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
1828         if (r < 0)
1829                 return r;
1830
1831         r = sd_bus_creds_get_euid(creds, &uid);
1832         if (r < 0)
1833                 return r;
1834
1835         r = have_multiple_sessions(m, uid);
1836         if (r < 0)
1837                 return r;
1838
1839         multiple_sessions = r > 0;
1840         blocked = manager_is_inhibited(m, w, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
1841
1842         if (multiple_sessions && action_multiple_sessions) {
1843                 r = bus_verify_polkit_async(message, CAP_SYS_BOOT, action_multiple_sessions, NULL, interactive, UID_INVALID, &m->polkit_registry, error);
1844                 if (r < 0)
1845                         return r;
1846                 if (r == 0)
1847                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1848         }
1849
1850         if (blocked && action_ignore_inhibit) {
1851                 r = bus_verify_polkit_async(message, CAP_SYS_BOOT, action_ignore_inhibit, NULL, interactive, UID_INVALID, &m->polkit_registry, error);
1852                 if (r < 0)
1853                         return r;
1854                 if (r == 0)
1855                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1856         }
1857
1858         if (!multiple_sessions && !blocked && action) {
1859                 r = bus_verify_polkit_async(message, CAP_SYS_BOOT, action, NULL, interactive, UID_INVALID, &m->polkit_registry, error);
1860                 if (r < 0)
1861                         return r;
1862                 if (r == 0)
1863                         return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1864         }
1865
1866         return 0;
1867 }
1868
1869 static int method_do_shutdown_or_sleep(
1870                 Manager *m,
1871                 sd_bus_message *message,
1872 #if 0 /// elogind has HandleAction instead of const char* unit_name
1873                 const char *unit_name,
1874 #else
1875                 HandleAction unit_name,
1876 #endif // 0
1877                 InhibitWhat w,
1878                 const char *action,
1879                 const char *action_multiple_sessions,
1880                 const char *action_ignore_inhibit,
1881                 const char *sleep_verb,
1882                 sd_bus_error *error) {
1883
1884         int interactive, r;
1885
1886         assert(m);
1887         assert(message);
1888 #if 0 /// elogind does not need this to be checked
1889         assert(unit_name);
1890 #endif // 0
1891         assert(w >= 0);
1892         assert(w <= _INHIBIT_WHAT_MAX);
1893
1894         r = sd_bus_message_read(message, "b", &interactive);
1895         if (r < 0)
1896                 return r;
1897
1898         log_debug_elogind("%s called with action '%s', sleep '%s' (%sinteractive)",
1899                           __FUNCTION__, action, sleep_verb,
1900                           interactive ? "" : "NOT ");
1901
1902         /* Don't allow multiple jobs being executed at the same time */
1903         if (m->action_what)
1904                 return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS, "There's already a shutdown or sleep operation in progress");
1905
1906         if (sleep_verb) {
1907 #if 0 /// Within elogind the manager m must be provided, too
1908                 r = can_sleep(sleep_verb);
1909 #else
1910                 r = can_sleep(m, sleep_verb);
1911 #endif // 0
1912                 if (r < 0)
1913                         return r;
1914
1915                 if (r == 0)
1916                         return sd_bus_error_setf(error, BUS_ERROR_SLEEP_VERB_NOT_SUPPORTED, "Sleep verb not supported");
1917         }
1918
1919 #if 0 /// Within elogind it does not make sense to verify shutdown creds when suspending
1920         r = verify_shutdown_creds(m, message, w, interactive, action, action_multiple_sessions,
1921                                   action_ignore_inhibit, error);
1922         if (r != 0)
1923                 return r;
1924 #else
1925         if (IN_SET(unit_name, HANDLE_HALT, HANDLE_POWEROFF, HANDLE_REBOOT)) {
1926                 r = verify_shutdown_creds(m, message, w, interactive, action, action_multiple_sessions,
1927                                           action_ignore_inhibit, error);
1928                 log_debug_elogind("verify_shutdown_creds() returned %d", r);
1929                 if (r != 0)
1930                         return r;
1931         }
1932 #endif // 0
1933
1934         r = bus_manager_shutdown_or_sleep_now_or_later(m, unit_name, w, error);
1935         if (r < 0)
1936                 return r;
1937
1938         return sd_bus_reply_method_return(message, NULL);
1939 }
1940
1941 static int method_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1942         Manager *m = userdata;
1943
1944         log_debug_elogind("%s called", __FUNCTION__);
1945
1946         return method_do_shutdown_or_sleep(
1947                         m, message,
1948 #if 0 /// elogind uses HandleAction instead of const char* unti names
1949                         SPECIAL_POWEROFF_TARGET,
1950 #else
1951                         HANDLE_POWEROFF,
1952 #endif // 0
1953                         INHIBIT_SHUTDOWN,
1954                         "org.freedesktop.login1.power-off",
1955                         "org.freedesktop.login1.power-off-multiple-sessions",
1956                         "org.freedesktop.login1.power-off-ignore-inhibit",
1957                         NULL,
1958                         error);
1959 }
1960
1961 static int method_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1962         Manager *m = userdata;
1963
1964         log_debug_elogind("%s called", __FUNCTION__);
1965
1966         return method_do_shutdown_or_sleep(
1967                         m, message,
1968 #if 0 /// elogind uses HandleAction instead of const char* unti names
1969                         SPECIAL_REBOOT_TARGET,
1970 #else
1971                         HANDLE_REBOOT,
1972 #endif // 0
1973                         INHIBIT_SHUTDOWN,
1974                         "org.freedesktop.login1.reboot",
1975                         "org.freedesktop.login1.reboot-multiple-sessions",
1976                         "org.freedesktop.login1.reboot-ignore-inhibit",
1977                         NULL,
1978                         error);
1979 }
1980
1981 static int method_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1982         Manager *m = userdata;
1983
1984         log_debug_elogind("%s called", __FUNCTION__);
1985
1986         return method_do_shutdown_or_sleep(
1987                         m, message,
1988 #if 0 /// elogind uses HandleAction instead of const char* unti names
1989                         SPECIAL_HALT_TARGET,
1990 #else
1991                         HANDLE_HALT,
1992 #endif // 0
1993                         INHIBIT_SHUTDOWN,
1994                         "org.freedesktop.login1.halt",
1995                         "org.freedesktop.login1.halt-multiple-sessions",
1996                         "org.freedesktop.login1.halt-ignore-inhibit",
1997                         NULL,
1998                         error);
1999 }
2000
2001 static int method_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2002         Manager *m = userdata;
2003
2004         log_debug_elogind("%s called", __FUNCTION__);
2005
2006         return method_do_shutdown_or_sleep(
2007                         m, message,
2008 #if 0 /// elogind uses HandleAction instead of const char* unti names
2009                         SPECIAL_SUSPEND_TARGET,
2010 #else
2011                         HANDLE_SUSPEND,
2012 #endif // 0
2013                         INHIBIT_SLEEP,
2014                         "org.freedesktop.login1.suspend",
2015                         "org.freedesktop.login1.suspend-multiple-sessions",
2016                         "org.freedesktop.login1.suspend-ignore-inhibit",
2017                         "suspend",
2018                         error);
2019 }
2020
2021 static int method_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2022         Manager *m = userdata;
2023
2024         log_debug_elogind("%s called", __FUNCTION__);
2025
2026         return method_do_shutdown_or_sleep(
2027                         m, message,
2028 #if 0 /// elogind uses HandleAction instead of const char* unti names
2029                         SPECIAL_HIBERNATE_TARGET,
2030 #else
2031                         HANDLE_HIBERNATE,
2032 #endif // 0
2033                         INHIBIT_SLEEP,
2034                         "org.freedesktop.login1.hibernate",
2035                         "org.freedesktop.login1.hibernate-multiple-sessions",
2036                         "org.freedesktop.login1.hibernate-ignore-inhibit",
2037                         "hibernate",
2038                         error);
2039 }
2040
2041 static int method_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2042         Manager *m = userdata;
2043
2044         log_debug_elogind("%s called", __FUNCTION__);
2045
2046         return method_do_shutdown_or_sleep(
2047                         m, message,
2048 #if 0 /// elogind uses HandleAction instead of const char* unti names
2049                         SPECIAL_HYBRID_SLEEP_TARGET,
2050 #else
2051                         HANDLE_HYBRID_SLEEP,
2052 #endif // 0
2053                         INHIBIT_SLEEP,
2054                         "org.freedesktop.login1.hibernate",
2055                         "org.freedesktop.login1.hibernate-multiple-sessions",
2056                         "org.freedesktop.login1.hibernate-ignore-inhibit",
2057                         "hybrid-sleep",
2058                         error);
2059 }
2060
2061 static int nologin_timeout_handler(
2062                         sd_event_source *s,
2063                         uint64_t usec,
2064                         void *userdata) {
2065
2066         Manager *m = userdata;
2067
2068         log_info("Creating /run/nologin, blocking further logins...");
2069
2070         m->unlink_nologin =
2071                 create_shutdown_run_nologin_or_warn() >= 0;
2072
2073         return 0;
2074 }
2075
2076 static int update_schedule_file(Manager *m) {
2077         _cleanup_free_ char *temp_path = NULL;
2078         _cleanup_fclose_ FILE *f = NULL;
2079         int r;
2080
2081         assert(m);
2082
2083         r = mkdir_safe_label("/run/systemd/shutdown", 0755, 0, 0, false);
2084         if (r < 0)
2085                 return log_error_errno(r, "Failed to create shutdown subdirectory: %m");
2086
2087         r = fopen_temporary("/run/systemd/shutdown/scheduled", &f, &temp_path);
2088         if (r < 0)
2089                 return log_error_errno(r, "Failed to save information about scheduled shutdowns: %m");
2090
2091         (void) fchmod(fileno(f), 0644);
2092
2093         fprintf(f,
2094                 "USEC="USEC_FMT"\n"
2095                 "WARN_WALL=%i\n"
2096                 "MODE=%s\n",
2097                 m->scheduled_shutdown_timeout,
2098                 m->enable_wall_messages,
2099                 m->scheduled_shutdown_type);
2100
2101         if (!isempty(m->wall_message)) {
2102                 _cleanup_free_ char *t;
2103
2104                 t = cescape(m->wall_message);
2105                 if (!t) {
2106                         r = -ENOMEM;
2107                         goto fail;
2108                 }
2109
2110                 fprintf(f, "WALL_MESSAGE=%s\n", t);
2111         }
2112
2113         r = fflush_and_check(f);
2114         if (r < 0)
2115                 goto fail;
2116
2117         if (rename(temp_path, "/run/systemd/shutdown/scheduled") < 0) {
2118                 r = -errno;
2119                 goto fail;
2120         }
2121
2122         return 0;
2123
2124 fail:
2125         (void) unlink(temp_path);
2126         (void) unlink("/run/systemd/shutdown/scheduled");
2127
2128         return log_error_errno(r, "Failed to write information about scheduled shutdowns: %m");
2129 }
2130
2131 #if 0 /// elogind must access this from elogind-dbus.c
2132 static void reset_scheduled_shutdown(Manager *m) {
2133 #else
2134 void reset_scheduled_shutdown(Manager *m) {
2135 #endif // 0
2136         assert(m);
2137
2138         m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2139         m->wall_message_timeout_source = sd_event_source_unref(m->wall_message_timeout_source);
2140         m->nologin_timeout_source = sd_event_source_unref(m->nologin_timeout_source);
2141
2142         m->scheduled_shutdown_type = mfree(m->scheduled_shutdown_type);
2143         m->scheduled_shutdown_timeout = 0;
2144         m->shutdown_dry_run = false;
2145
2146         if (m->unlink_nologin) {
2147                 (void) unlink_or_warn("/run/nologin");
2148                 m->unlink_nologin = false;
2149         }
2150
2151         (void) unlink("/run/systemd/shutdown/scheduled");
2152 }
2153
2154 #if 0 /// elogind has its own variant in elogind-dbus.c
2155 static int manager_scheduled_shutdown_handler(
2156                         sd_event_source *s,
2157                         uint64_t usec,
2158                         void *userdata) {
2159
2160         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
2161         Manager *m = userdata;
2162         const char *target;
2163         int r;
2164
2165         assert(m);
2166
2167         if (isempty(m->scheduled_shutdown_type))
2168                 return 0;
2169
2170         if (streq(m->scheduled_shutdown_type, "poweroff"))
2171                 target = SPECIAL_POWEROFF_TARGET;
2172         else if (streq(m->scheduled_shutdown_type, "reboot"))
2173                 target = SPECIAL_REBOOT_TARGET;
2174         else if (streq(m->scheduled_shutdown_type, "halt"))
2175                 target = SPECIAL_HALT_TARGET;
2176         else
2177                 assert_not_reached("unexpected shutdown type");
2178
2179         /* Don't allow multiple jobs being executed at the same time */
2180         if (m->action_what) {
2181                 r = -EALREADY;
2182                 log_error("Scheduled shutdown to %s failed: shutdown or sleep operation already in progress", target);
2183                 goto error;
2184         }
2185
2186         if (m->shutdown_dry_run) {
2187                 /* We do not process delay inhibitors here.  Otherwise, we
2188                  * would have to be considered "in progress" (like the check
2189                  * above) for some seconds after our admin has seen the final
2190                  * wall message. */
2191
2192                 bus_manager_log_shutdown(m, target);
2193                 log_info("Running in dry run, suppressing action.");
2194                 reset_scheduled_shutdown(m);
2195
2196                 return 0;
2197         }
2198
2199         r = bus_manager_shutdown_or_sleep_now_or_later(m, target, INHIBIT_SHUTDOWN, &error);
2200         if (r < 0) {
2201                 log_error_errno(r, "Scheduled shutdown to %s failed: %m", target);
2202                 goto error;
2203         }
2204
2205         return 0;
2206
2207 error:
2208         reset_scheduled_shutdown(m);
2209         return r;
2210 }
2211 #endif // 0
2212
2213 static int method_schedule_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2214         Manager *m = userdata;
2215         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2216         const char *action_multiple_sessions = NULL;
2217         const char *action_ignore_inhibit = NULL;
2218         const char *action = NULL;
2219         uint64_t elapse;
2220         char *type;
2221         int r;
2222         bool dry_run = false;
2223
2224         assert(m);
2225         assert(message);
2226
2227         log_debug_elogind("%s called", __FUNCTION__);
2228         r = sd_bus_message_read(message, "st", &type, &elapse);
2229         if (r < 0)
2230                 return r;
2231
2232         if (startswith(type, "dry-")) {
2233                 type += 4;
2234                 dry_run = true;
2235         }
2236
2237         if (streq(type, "poweroff")) {
2238                 action = "org.freedesktop.login1.power-off";
2239                 action_multiple_sessions = "org.freedesktop.login1.power-off-multiple-sessions";
2240                 action_ignore_inhibit = "org.freedesktop.login1.power-off-ignore-inhibit";
2241         } else if (streq(type, "reboot")) {
2242                 action = "org.freedesktop.login1.reboot";
2243                 action_multiple_sessions = "org.freedesktop.login1.reboot-multiple-sessions";
2244                 action_ignore_inhibit = "org.freedesktop.login1.reboot-ignore-inhibit";
2245         } else if (streq(type, "halt")) {
2246                 action = "org.freedesktop.login1.halt";
2247                 action_multiple_sessions = "org.freedesktop.login1.halt-multiple-sessions";
2248                 action_ignore_inhibit = "org.freedesktop.login1.halt-ignore-inhibit";
2249         } else
2250                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unsupported shutdown type");
2251
2252         r = verify_shutdown_creds(m, message, INHIBIT_SHUTDOWN, false,
2253                                   action, action_multiple_sessions, action_ignore_inhibit, error);
2254         if (r != 0)
2255                 return r;
2256
2257         if (m->scheduled_shutdown_timeout_source) {
2258                 r = sd_event_source_set_time(m->scheduled_shutdown_timeout_source, elapse);
2259                 if (r < 0)
2260                         return log_error_errno(r, "sd_event_source_set_time() failed: %m");
2261
2262                 r = sd_event_source_set_enabled(m->scheduled_shutdown_timeout_source, SD_EVENT_ONESHOT);
2263                 if (r < 0)
2264                         return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
2265         } else {
2266                 r = sd_event_add_time(m->event, &m->scheduled_shutdown_timeout_source,
2267                                       CLOCK_REALTIME, elapse, 0, manager_scheduled_shutdown_handler, m);
2268                 if (r < 0)
2269                         return log_error_errno(r, "sd_event_add_time() failed: %m");
2270         }
2271
2272         r = free_and_strdup(&m->scheduled_shutdown_type, type);
2273         if (r < 0) {
2274                 m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2275                 return log_oom();
2276         }
2277
2278         m->shutdown_dry_run = dry_run;
2279
2280         if (m->nologin_timeout_source) {
2281                 r = sd_event_source_set_time(m->nologin_timeout_source, elapse);
2282                 if (r < 0)
2283                         return log_error_errno(r, "sd_event_source_set_time() failed: %m");
2284
2285                 r = sd_event_source_set_enabled(m->nologin_timeout_source, SD_EVENT_ONESHOT);
2286                 if (r < 0)
2287                         return log_error_errno(r, "sd_event_source_set_enabled() failed: %m");
2288         } else {
2289                 r = sd_event_add_time(m->event, &m->nologin_timeout_source,
2290                                       CLOCK_REALTIME, elapse - 5 * USEC_PER_MINUTE, 0, nologin_timeout_handler, m);
2291                 if (r < 0)
2292                         return log_error_errno(r, "sd_event_add_time() failed: %m");
2293         }
2294
2295         m->scheduled_shutdown_timeout = elapse;
2296
2297         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
2298         if (r >= 0) {
2299                 const char *tty = NULL;
2300
2301                 (void) sd_bus_creds_get_uid(creds, &m->scheduled_shutdown_uid);
2302                 (void) sd_bus_creds_get_tty(creds, &tty);
2303
2304                 r = free_and_strdup(&m->scheduled_shutdown_tty, tty);
2305                 if (r < 0) {
2306                         m->scheduled_shutdown_timeout_source = sd_event_source_unref(m->scheduled_shutdown_timeout_source);
2307                         return log_oom();
2308                 }
2309         }
2310
2311         r = manager_setup_wall_message_timer(m);
2312         if (r < 0)
2313                 return r;
2314
2315         r = update_schedule_file(m);
2316         if (r < 0)
2317                 return r;
2318
2319         return sd_bus_reply_method_return(message, NULL);
2320 }
2321
2322 static int method_cancel_scheduled_shutdown(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2323         Manager *m = userdata;
2324         bool cancelled;
2325 #if 1 /// elogind needs to construct the message to allow extra wall messages
2326         _cleanup_free_ char *l = NULL;
2327 #endif // 1
2328
2329         assert(m);
2330         assert(message);
2331
2332         log_debug_elogind("%s called", __FUNCTION__);
2333         cancelled = m->scheduled_shutdown_type != NULL;
2334         reset_scheduled_shutdown(m);
2335
2336         if (cancelled && m->enable_wall_messages) {
2337                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2338                 const char *tty = NULL;
2339                 uid_t uid = 0;
2340                 int r;
2341
2342                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_AUGMENT|SD_BUS_CREDS_TTY|SD_BUS_CREDS_UID, &creds);
2343                 if (r >= 0) {
2344                         (void) sd_bus_creds_get_uid(creds, &uid);
2345                         (void) sd_bus_creds_get_tty(creds, &tty);
2346                 }
2347
2348 #if 0 /// elogind wants to allow extra cancellation messages
2349                 utmp_wall("The system shutdown has been cancelled",
2350                           uid_to_name(uid), tty, logind_wall_tty_filter, m);
2351 #else
2352                 r = asprintf(&l, "%s%sThe system shutdown has been cancelled!",
2353                              strempty(m->wall_message),
2354                              isempty(m->wall_message) ? "" : "\n");
2355                 if (r < 0) {
2356                         log_oom();
2357                         return 0;
2358                 }
2359
2360                 utmp_wall(l, uid_to_name(uid), tty, logind_wall_tty_filter, m);
2361 #endif // 0
2362         }
2363
2364         return sd_bus_reply_method_return(message, "b", cancelled);
2365 }
2366
2367 static int method_can_shutdown_or_sleep(
2368                 Manager *m,
2369                 sd_bus_message *message,
2370                 InhibitWhat w,
2371                 const char *action,
2372                 const char *action_multiple_sessions,
2373                 const char *action_ignore_inhibit,
2374                 const char *sleep_verb,
2375                 sd_bus_error *error) {
2376
2377         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2378         bool multiple_sessions, challenge, blocked;
2379         const char *result = NULL;
2380         uid_t uid;
2381         int r;
2382
2383         assert(m);
2384         assert(message);
2385         assert(w >= 0);
2386         assert(w <= _INHIBIT_WHAT_MAX);
2387         assert(action);
2388         assert(action_multiple_sessions);
2389         assert(action_ignore_inhibit);
2390
2391         if (sleep_verb) {
2392 #if 0 /// elogind needs to have the manager being passed
2393                 r = can_sleep(sleep_verb);
2394 #else
2395                 r = can_sleep(m, sleep_verb);
2396 #endif // 0
2397                 if (r < 0)
2398                         return r;
2399                 if (r == 0)
2400                         return sd_bus_reply_method_return(message, "s", "na");
2401         }
2402
2403         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID, &creds);
2404         if (r < 0)
2405                 return r;
2406
2407         r = sd_bus_creds_get_euid(creds, &uid);
2408         if (r < 0)
2409                 return r;
2410
2411         r = have_multiple_sessions(m, uid);
2412         if (r < 0)
2413                 return r;
2414
2415         multiple_sessions = r > 0;
2416         blocked = manager_is_inhibited(m, w, INHIBIT_BLOCK, NULL, false, true, uid, NULL);
2417
2418         if (multiple_sessions) {
2419                 r = bus_test_polkit(message, CAP_SYS_BOOT, action_multiple_sessions, NULL, UID_INVALID, &challenge, error);
2420                 if (r < 0)
2421                         return r;
2422
2423                 if (r > 0)
2424                         result = "yes";
2425                 else if (challenge)
2426                         result = "challenge";
2427                 else
2428                         result = "no";
2429         }
2430
2431         if (blocked) {
2432                 r = bus_test_polkit(message, CAP_SYS_BOOT, action_ignore_inhibit, NULL, UID_INVALID, &challenge, error);
2433                 if (r < 0)
2434                         return r;
2435
2436                 if (r > 0 && !result)
2437                         result = "yes";
2438                 else if (challenge && (!result || streq(result, "yes")))
2439                         result = "challenge";
2440                 else
2441                         result = "no";
2442         }
2443
2444         if (!multiple_sessions && !blocked) {
2445                 /* If neither inhibit nor multiple sessions
2446                  * apply then just check the normal policy */
2447
2448                 r = bus_test_polkit(message, CAP_SYS_BOOT, action, NULL, UID_INVALID, &challenge, error);
2449                 if (r < 0)
2450                         return r;
2451
2452                 if (r > 0)
2453                         result = "yes";
2454                 else if (challenge)
2455                         result = "challenge";
2456                 else
2457                         result = "no";
2458         }
2459
2460         return sd_bus_reply_method_return(message, "s", result);
2461 }
2462
2463 static int method_can_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2464         Manager *m = userdata;
2465
2466         return method_can_shutdown_or_sleep(
2467                         m, message,
2468                         INHIBIT_SHUTDOWN,
2469                         "org.freedesktop.login1.power-off",
2470                         "org.freedesktop.login1.power-off-multiple-sessions",
2471                         "org.freedesktop.login1.power-off-ignore-inhibit",
2472                         NULL,
2473                         error);
2474 }
2475
2476 static int method_can_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2477         Manager *m = userdata;
2478
2479         return method_can_shutdown_or_sleep(
2480                         m, message,
2481                         INHIBIT_SHUTDOWN,
2482                         "org.freedesktop.login1.reboot",
2483                         "org.freedesktop.login1.reboot-multiple-sessions",
2484                         "org.freedesktop.login1.reboot-ignore-inhibit",
2485                         NULL,
2486                         error);
2487 }
2488
2489 static int method_can_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2490         Manager *m = userdata;
2491
2492         return method_can_shutdown_or_sleep(
2493                         m, message,
2494                         INHIBIT_SHUTDOWN,
2495                         "org.freedesktop.login1.halt",
2496                         "org.freedesktop.login1.halt-multiple-sessions",
2497                         "org.freedesktop.login1.halt-ignore-inhibit",
2498                         NULL,
2499                         error);
2500 }
2501
2502 static int method_can_suspend(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2503         Manager *m = userdata;
2504
2505         return method_can_shutdown_or_sleep(
2506                         m, message,
2507                         INHIBIT_SLEEP,
2508                         "org.freedesktop.login1.suspend",
2509                         "org.freedesktop.login1.suspend-multiple-sessions",
2510                         "org.freedesktop.login1.suspend-ignore-inhibit",
2511                         "suspend",
2512                         error);
2513 }
2514
2515 static int method_can_hibernate(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2516         Manager *m = userdata;
2517
2518         return method_can_shutdown_or_sleep(
2519                         m, message,
2520                         INHIBIT_SLEEP,
2521                         "org.freedesktop.login1.hibernate",
2522                         "org.freedesktop.login1.hibernate-multiple-sessions",
2523                         "org.freedesktop.login1.hibernate-ignore-inhibit",
2524                         "hibernate",
2525                         error);
2526 }
2527
2528 static int method_can_hybrid_sleep(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2529         Manager *m = userdata;
2530
2531         return method_can_shutdown_or_sleep(
2532                         m, message,
2533                         INHIBIT_SLEEP,
2534                         "org.freedesktop.login1.hibernate",
2535                         "org.freedesktop.login1.hibernate-multiple-sessions",
2536                         "org.freedesktop.login1.hibernate-ignore-inhibit",
2537                         "hybrid-sleep",
2538                         error);
2539 }
2540
2541 static int property_get_reboot_to_firmware_setup(
2542                 sd_bus *bus,
2543                 const char *path,
2544                 const char *interface,
2545                 const char *property,
2546                 sd_bus_message *reply,
2547                 void *userdata,
2548                 sd_bus_error *error) {
2549 #if 0 /// elogind does not support EFI
2550         int r;
2551
2552         assert(bus);
2553         assert(reply);
2554         assert(userdata);
2555
2556         r = efi_get_reboot_to_firmware();
2557         if (r < 0 && r != -EOPNOTSUPP)
2558                 log_warning_errno(r, "Failed to determine reboot-to-firmware state: %m");
2559
2560         return sd_bus_message_append(reply, "b", r > 0);
2561 #else
2562         return sd_bus_message_append(reply, "b", false);
2563 #endif // 0
2564 }
2565
2566 static int method_set_reboot_to_firmware_setup(
2567                 sd_bus_message *message,
2568                 void *userdata,
2569                 sd_bus_error *error) {
2570
2571         int b, r;
2572         Manager *m = userdata;
2573
2574         assert(message);
2575         assert(m);
2576
2577         r = sd_bus_message_read(message, "b", &b);
2578         if (r < 0)
2579                 return r;
2580
2581         r = bus_verify_polkit_async(message,
2582                                     CAP_SYS_ADMIN,
2583                                     "org.freedesktop.login1.set-reboot-to-firmware-setup",
2584                                     NULL,
2585                                     false,
2586                                     UID_INVALID,
2587                                     &m->polkit_registry,
2588                                     error);
2589         if (r < 0)
2590                 return r;
2591         if (r == 0)
2592                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2593
2594 #if 0 /// elogind does not support EFI
2595         r = efi_set_reboot_to_firmware(b);
2596         if (r < 0)
2597                 return r;
2598 #endif // 0
2599
2600         return sd_bus_reply_method_return(message, NULL);
2601 }
2602
2603 static int method_can_reboot_to_firmware_setup(
2604                 sd_bus_message *message,
2605                 void *userdata,
2606                 sd_bus_error *error) {
2607
2608 #if 0 /// elogind does not support EFI
2609         int r;
2610         bool challenge;
2611         const char *result;
2612         Manager *m = userdata;
2613
2614         assert(message);
2615         assert(m);
2616
2617         r = efi_reboot_to_firmware_supported();
2618         if (r < 0) {
2619                 if (r != -EOPNOTSUPP)
2620                         log_warning_errno(errno, "Failed to determine whether reboot to firmware is supported: %m");
2621
2622                 return sd_bus_reply_method_return(message, "s", "na");
2623         }
2624
2625         r = bus_test_polkit(message,
2626                             CAP_SYS_ADMIN,
2627                             "org.freedesktop.login1.set-reboot-to-firmware-setup",
2628                             NULL,
2629                             UID_INVALID,
2630                             &challenge,
2631                             error);
2632         if (r < 0)
2633                 return r;
2634
2635         if (r > 0)
2636                 result = "yes";
2637         else if (challenge)
2638                 result = "challenge";
2639         else
2640                 result = "no";
2641
2642         return sd_bus_reply_method_return(message, "s", result);
2643 #else
2644         return sd_bus_reply_method_return(message, "s", "no");
2645 #endif // 0
2646 }
2647
2648 static int method_set_wall_message(
2649                 sd_bus_message *message,
2650                 void *userdata,
2651                 sd_bus_error *error) {
2652
2653         int r;
2654         Manager *m = userdata;
2655         char *wall_message;
2656         int enable_wall_messages;
2657
2658         assert(message);
2659         assert(m);
2660
2661         r = sd_bus_message_read(message, "sb", &wall_message, &enable_wall_messages);
2662         if (r < 0)
2663                 return r;
2664
2665 #if 0 /// elogind only calls this for shutdown/reboot, which already needs authorization.
2666         r = bus_verify_polkit_async(message,
2667                                     CAP_SYS_ADMIN,
2668                                     "org.freedesktop.login1.set-wall-message",
2669                                     NULL,
2670                                     false,
2671                                     UID_INVALID,
2672                                     &m->polkit_registry,
2673                                     error);
2674         if (r < 0)
2675                 return r;
2676         if (r == 0)
2677                 return 1; /* Will call us back */
2678 #endif // 0
2679
2680         r = free_and_strdup(&m->wall_message, empty_to_null(wall_message));
2681         if (r < 0)
2682                 return log_oom();
2683
2684         m->enable_wall_messages = enable_wall_messages;
2685
2686         return sd_bus_reply_method_return(message, NULL);
2687 }
2688
2689 static int method_inhibit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2690         _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
2691         const char *who, *why, *what, *mode;
2692         _cleanup_free_ char *id = NULL;
2693         _cleanup_close_ int fifo_fd = -1;
2694         Manager *m = userdata;
2695         Inhibitor *i = NULL;
2696         InhibitMode mm;
2697         InhibitWhat w;
2698         pid_t pid;
2699         uid_t uid;
2700         int r;
2701
2702         assert(message);
2703         assert(m);
2704
2705         r = sd_bus_message_read(message, "ssss", &what, &who, &why, &mode);
2706         if (r < 0)
2707                 return r;
2708
2709         w = inhibit_what_from_string(what);
2710         if (w <= 0)
2711                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid what specification %s", what);
2712
2713         mm = inhibit_mode_from_string(mode);
2714         if (mm < 0)
2715                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid mode specification %s", mode);
2716
2717         /* Delay is only supported for shutdown/sleep */
2718         if (mm == INHIBIT_DELAY && (w & ~(INHIBIT_SHUTDOWN|INHIBIT_SLEEP)))
2719                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Delay inhibitors only supported for shutdown and sleep");
2720
2721         /* Don't allow taking delay locks while we are already
2722          * executing the operation. We shouldn't create the impression
2723          * that the lock was successful if the machine is about to go
2724          * down/suspend any moment. */
2725         if (m->action_what & w)
2726                 return sd_bus_error_setf(error, BUS_ERROR_OPERATION_IN_PROGRESS, "The operation inhibition has been requested for is already running");
2727
2728         r = bus_verify_polkit_async(
2729                         message,
2730                         CAP_SYS_BOOT,
2731                         w == INHIBIT_SHUTDOWN             ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-shutdown" : "org.freedesktop.login1.inhibit-delay-shutdown") :
2732                         w == INHIBIT_SLEEP                ? (mm == INHIBIT_BLOCK ? "org.freedesktop.login1.inhibit-block-sleep"    : "org.freedesktop.login1.inhibit-delay-sleep") :
2733                         w == INHIBIT_IDLE                 ? "org.freedesktop.login1.inhibit-block-idle" :
2734                         w == INHIBIT_HANDLE_POWER_KEY     ? "org.freedesktop.login1.inhibit-handle-power-key" :
2735                         w == INHIBIT_HANDLE_SUSPEND_KEY   ? "org.freedesktop.login1.inhibit-handle-suspend-key" :
2736                         w == INHIBIT_HANDLE_HIBERNATE_KEY ? "org.freedesktop.login1.inhibit-handle-hibernate-key" :
2737                                                             "org.freedesktop.login1.inhibit-handle-lid-switch",
2738                         NULL,
2739                         false,
2740                         UID_INVALID,
2741                         &m->polkit_registry,
2742                         error);
2743         if (r < 0)
2744                 return r;
2745         if (r == 0)
2746                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2747
2748         r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_EUID|SD_BUS_CREDS_PID, &creds);
2749         if (r < 0)
2750                 return r;
2751
2752         r = sd_bus_creds_get_euid(creds, &uid);
2753         if (r < 0)
2754                 return r;
2755
2756         r = sd_bus_creds_get_pid(creds, &pid);
2757         if (r < 0)
2758                 return r;
2759
2760         if (hashmap_size(m->inhibitors) >= m->inhibitors_max)
2761                 return sd_bus_error_setf(error, SD_BUS_ERROR_LIMITS_EXCEEDED, "Maximum number of inhibitors (%" PRIu64 ") reached, refusing further inhibitors.", m->inhibitors_max);
2762
2763         do {
2764                 id = mfree(id);
2765
2766                 if (asprintf(&id, "%lu", ++m->inhibit_counter) < 0)
2767                         return -ENOMEM;
2768
2769         } while (hashmap_get(m->inhibitors, id));
2770
2771         r = manager_add_inhibitor(m, id, &i);
2772         if (r < 0)
2773                 return r;
2774
2775         i->what = w;
2776         i->mode = mm;
2777         i->pid = pid;
2778         i->uid = uid;
2779         i->why = strdup(why);
2780         i->who = strdup(who);
2781
2782         if (!i->why || !i->who) {
2783                 r = -ENOMEM;
2784                 goto fail;
2785         }
2786
2787         fifo_fd = inhibitor_create_fifo(i);
2788         if (fifo_fd < 0) {
2789                 r = fifo_fd;
2790                 goto fail;
2791         }
2792
2793         inhibitor_start(i);
2794
2795         return sd_bus_reply_method_return(message, "h", fifo_fd);
2796
2797 fail:
2798         if (i)
2799                 inhibitor_free(i);
2800
2801         return r;
2802 }
2803
2804 const sd_bus_vtable manager_vtable[] = {
2805         SD_BUS_VTABLE_START(0),
2806
2807         SD_BUS_WRITABLE_PROPERTY("EnableWallMessages", "b", NULL, NULL, offsetof(Manager, enable_wall_messages), 0),
2808         SD_BUS_WRITABLE_PROPERTY("WallMessage", "s", NULL, NULL, offsetof(Manager, wall_message), 0),
2809
2810 #if 0 /// UNNEEDED by elogind
2811         SD_BUS_PROPERTY("NAutoVTs", "u", NULL, offsetof(Manager, n_autovts), SD_BUS_VTABLE_PROPERTY_CONST),
2812 #endif // 0
2813         SD_BUS_PROPERTY("KillOnlyUsers", "as", NULL, offsetof(Manager, kill_only_users), SD_BUS_VTABLE_PROPERTY_CONST),
2814         SD_BUS_PROPERTY("KillExcludeUsers", "as", NULL, offsetof(Manager, kill_exclude_users), SD_BUS_VTABLE_PROPERTY_CONST),
2815         SD_BUS_PROPERTY("KillUserProcesses", "b", NULL, offsetof(Manager, kill_user_processes), SD_BUS_VTABLE_PROPERTY_CONST),
2816         SD_BUS_PROPERTY("RebootToFirmwareSetup", "b", property_get_reboot_to_firmware_setup, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2817         SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
2818         SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
2819         SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
2820         SD_BUS_PROPERTY("BlockInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
2821         SD_BUS_PROPERTY("DelayInhibited", "s", property_get_inhibited, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
2822         SD_BUS_PROPERTY("InhibitDelayMaxUSec", "t", NULL, offsetof(Manager, inhibit_delay_max), SD_BUS_VTABLE_PROPERTY_CONST),
2823         SD_BUS_PROPERTY("HandlePowerKey", "s", property_get_handle_action, offsetof(Manager, handle_power_key), SD_BUS_VTABLE_PROPERTY_CONST),
2824         SD_BUS_PROPERTY("HandleSuspendKey", "s", property_get_handle_action, offsetof(Manager, handle_suspend_key), SD_BUS_VTABLE_PROPERTY_CONST),
2825         SD_BUS_PROPERTY("HandleHibernateKey", "s", property_get_handle_action, offsetof(Manager, handle_hibernate_key), SD_BUS_VTABLE_PROPERTY_CONST),
2826         SD_BUS_PROPERTY("HandleLidSwitch", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch), SD_BUS_VTABLE_PROPERTY_CONST),
2827         SD_BUS_PROPERTY("HandleLidSwitchExternalPower", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch_ep), SD_BUS_VTABLE_PROPERTY_CONST),
2828         SD_BUS_PROPERTY("HandleLidSwitchDocked", "s", property_get_handle_action, offsetof(Manager, handle_lid_switch_docked), SD_BUS_VTABLE_PROPERTY_CONST),
2829         SD_BUS_PROPERTY("HoldoffTimeoutUSec", "t", NULL, offsetof(Manager, holdoff_timeout_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2830         SD_BUS_PROPERTY("IdleAction", "s", property_get_handle_action, offsetof(Manager, idle_action), SD_BUS_VTABLE_PROPERTY_CONST),
2831         SD_BUS_PROPERTY("IdleActionUSec", "t", NULL, offsetof(Manager, idle_action_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2832         SD_BUS_PROPERTY("PreparingForShutdown", "b", property_get_preparing, 0, 0),
2833         SD_BUS_PROPERTY("PreparingForSleep", "b", property_get_preparing, 0, 0),
2834         SD_BUS_PROPERTY("ScheduledShutdown", "(st)", property_get_scheduled_shutdown, 0, 0),
2835         SD_BUS_PROPERTY("Docked", "b", property_get_docked, 0, 0),
2836         SD_BUS_PROPERTY("RemoveIPC", "b", bus_property_get_bool, offsetof(Manager, remove_ipc), SD_BUS_VTABLE_PROPERTY_CONST),
2837         SD_BUS_PROPERTY("RuntimeDirectorySize", "t", bus_property_get_size, offsetof(Manager, runtime_dir_size), SD_BUS_VTABLE_PROPERTY_CONST),
2838         SD_BUS_PROPERTY("InhibitorsMax", "t", NULL, offsetof(Manager, inhibitors_max), SD_BUS_VTABLE_PROPERTY_CONST),
2839         SD_BUS_PROPERTY("NCurrentInhibitors", "t", property_get_current_inhibitors, 0, 0),
2840         SD_BUS_PROPERTY("SessionsMax", "t", NULL, offsetof(Manager, sessions_max), SD_BUS_VTABLE_PROPERTY_CONST),
2841         SD_BUS_PROPERTY("NCurrentSessions", "t", property_get_current_sessions, 0, 0),
2842         SD_BUS_PROPERTY("UserTasksMax", "t", NULL, offsetof(Manager, user_tasks_max), SD_BUS_VTABLE_PROPERTY_CONST),
2843
2844         SD_BUS_METHOD("GetSession", "s", "o", method_get_session, SD_BUS_VTABLE_UNPRIVILEGED),
2845         SD_BUS_METHOD("GetSessionByPID", "u", "o", method_get_session_by_pid, SD_BUS_VTABLE_UNPRIVILEGED),
2846         SD_BUS_METHOD("GetUser", "u", "o", method_get_user, SD_BUS_VTABLE_UNPRIVILEGED),
2847         SD_BUS_METHOD("GetUserByPID", "u", "o", method_get_user_by_pid, SD_BUS_VTABLE_UNPRIVILEGED),
2848         SD_BUS_METHOD("GetSeat", "s", "o", method_get_seat, SD_BUS_VTABLE_UNPRIVILEGED),
2849         SD_BUS_METHOD("ListSessions", NULL, "a(susso)", method_list_sessions, SD_BUS_VTABLE_UNPRIVILEGED),
2850         SD_BUS_METHOD("ListUsers", NULL, "a(uso)", method_list_users, SD_BUS_VTABLE_UNPRIVILEGED),
2851         SD_BUS_METHOD("ListSeats", NULL, "a(so)", method_list_seats, SD_BUS_VTABLE_UNPRIVILEGED),
2852         SD_BUS_METHOD("ListInhibitors", NULL, "a(ssssuu)", method_list_inhibitors, SD_BUS_VTABLE_UNPRIVILEGED),
2853         SD_BUS_METHOD("CreateSession", "uusssssussbssa(sv)", "soshusub", method_create_session, 0),
2854         SD_BUS_METHOD("ReleaseSession", "s", NULL, method_release_session, 0),
2855         SD_BUS_METHOD("ActivateSession", "s", NULL, method_activate_session, SD_BUS_VTABLE_UNPRIVILEGED),
2856         SD_BUS_METHOD("ActivateSessionOnSeat", "ss", NULL, method_activate_session_on_seat, SD_BUS_VTABLE_UNPRIVILEGED),
2857         SD_BUS_METHOD("LockSession", "s", NULL, method_lock_session, SD_BUS_VTABLE_UNPRIVILEGED),
2858         SD_BUS_METHOD("UnlockSession", "s", NULL, method_lock_session, SD_BUS_VTABLE_UNPRIVILEGED),
2859         SD_BUS_METHOD("LockSessions", NULL, NULL, method_lock_sessions, SD_BUS_VTABLE_UNPRIVILEGED),
2860         SD_BUS_METHOD("UnlockSessions", NULL, NULL, method_lock_sessions, SD_BUS_VTABLE_UNPRIVILEGED),
2861         SD_BUS_METHOD("KillSession", "ssi", NULL, method_kill_session, SD_BUS_VTABLE_UNPRIVILEGED),
2862         SD_BUS_METHOD("KillUser", "ui", NULL, method_kill_user, SD_BUS_VTABLE_UNPRIVILEGED),
2863         SD_BUS_METHOD("TerminateSession", "s", NULL, method_terminate_session, SD_BUS_VTABLE_UNPRIVILEGED),
2864         SD_BUS_METHOD("TerminateUser", "u", NULL, method_terminate_user, SD_BUS_VTABLE_UNPRIVILEGED),
2865         SD_BUS_METHOD("TerminateSeat", "s", NULL, method_terminate_seat, SD_BUS_VTABLE_UNPRIVILEGED),
2866         SD_BUS_METHOD("SetUserLinger", "ubb", NULL, method_set_user_linger, SD_BUS_VTABLE_UNPRIVILEGED),
2867         SD_BUS_METHOD("AttachDevice", "ssb", NULL, method_attach_device, SD_BUS_VTABLE_UNPRIVILEGED),
2868         SD_BUS_METHOD("FlushDevices", "b", NULL, method_flush_devices, SD_BUS_VTABLE_UNPRIVILEGED),
2869         SD_BUS_METHOD("PowerOff", "b", NULL, method_poweroff, SD_BUS_VTABLE_UNPRIVILEGED),
2870         SD_BUS_METHOD("Reboot", "b", NULL, method_reboot, SD_BUS_VTABLE_UNPRIVILEGED),
2871         SD_BUS_METHOD("Halt", "b", NULL, method_halt, SD_BUS_VTABLE_UNPRIVILEGED),
2872         SD_BUS_METHOD("Suspend", "b", NULL, method_suspend, SD_BUS_VTABLE_UNPRIVILEGED),
2873         SD_BUS_METHOD("Hibernate", "b", NULL, method_hibernate, SD_BUS_VTABLE_UNPRIVILEGED),
2874         SD_BUS_METHOD("HybridSleep", "b", NULL, method_hybrid_sleep, SD_BUS_VTABLE_UNPRIVILEGED),
2875         SD_BUS_METHOD("CanPowerOff", NULL, "s", method_can_poweroff, SD_BUS_VTABLE_UNPRIVILEGED),
2876         SD_BUS_METHOD("CanReboot", NULL, "s", method_can_reboot, SD_BUS_VTABLE_UNPRIVILEGED),
2877         SD_BUS_METHOD("CanHalt", NULL, "s", method_can_halt, SD_BUS_VTABLE_UNPRIVILEGED),
2878         SD_BUS_METHOD("CanSuspend", NULL, "s", method_can_suspend, SD_BUS_VTABLE_UNPRIVILEGED),
2879         SD_BUS_METHOD("CanHibernate", NULL, "s", method_can_hibernate, SD_BUS_VTABLE_UNPRIVILEGED),
2880         SD_BUS_METHOD("CanHybridSleep", NULL, "s", method_can_hybrid_sleep, SD_BUS_VTABLE_UNPRIVILEGED),
2881         SD_BUS_METHOD("ScheduleShutdown", "st", NULL, method_schedule_shutdown, SD_BUS_VTABLE_UNPRIVILEGED),
2882         SD_BUS_METHOD("CancelScheduledShutdown", NULL, "b", method_cancel_scheduled_shutdown, SD_BUS_VTABLE_UNPRIVILEGED),
2883         SD_BUS_METHOD("Inhibit", "ssss", "h", method_inhibit, SD_BUS_VTABLE_UNPRIVILEGED),
2884         SD_BUS_METHOD("CanRebootToFirmwareSetup", NULL, "s", method_can_reboot_to_firmware_setup, SD_BUS_VTABLE_UNPRIVILEGED),
2885         SD_BUS_METHOD("SetRebootToFirmwareSetup", "b", NULL, method_set_reboot_to_firmware_setup, SD_BUS_VTABLE_UNPRIVILEGED),
2886         SD_BUS_METHOD("SetWallMessage", "sb", NULL, method_set_wall_message, SD_BUS_VTABLE_UNPRIVILEGED),
2887
2888         SD_BUS_SIGNAL("SessionNew", "so", 0),
2889         SD_BUS_SIGNAL("SessionRemoved", "so", 0),
2890         SD_BUS_SIGNAL("UserNew", "uo", 0),
2891         SD_BUS_SIGNAL("UserRemoved", "uo", 0),
2892         SD_BUS_SIGNAL("SeatNew", "so", 0),
2893         SD_BUS_SIGNAL("SeatRemoved", "so", 0),
2894         SD_BUS_SIGNAL("PrepareForShutdown", "b", 0),
2895         SD_BUS_SIGNAL("PrepareForSleep", "b", 0),
2896
2897         SD_BUS_VTABLE_END
2898 };
2899
2900 #if 0 /// UNNEEDED by elogind
2901 static int session_jobs_reply(Session *s, const char *unit, const char *result) {
2902         int r = 0;
2903
2904         assert(s);
2905         assert(unit);
2906
2907         if (!s->started)
2908                 return r;
2909
2910         if (streq(result, "done"))
2911                 r = session_send_create_reply(s, NULL);
2912         else {
2913                 _cleanup_(sd_bus_error_free) sd_bus_error e = SD_BUS_ERROR_NULL;
2914
2915                 sd_bus_error_setf(&e, BUS_ERROR_JOB_FAILED, "Start job for unit %s failed with '%s'", unit, result);
2916                 r = session_send_create_reply(s, &e);
2917         }
2918
2919         return r;
2920 }
2921
2922 int match_job_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2923         const char *path, *result, *unit;
2924         Manager *m = userdata;
2925         Session *session;
2926         uint32_t id;
2927         User *user;
2928         int r;
2929
2930         assert(message);
2931         assert(m);
2932
2933         r = sd_bus_message_read(message, "uoss", &id, &path, &unit, &result);
2934         if (r < 0) {
2935                 bus_log_parse_error(r);
2936                 return 0;
2937         }
2938
2939         if (m->action_job && streq(m->action_job, path)) {
2940                 log_info("Operation '%s' finished.", inhibit_what_to_string(m->action_what));
2941
2942                 /* Tell people that they now may take a lock again */
2943                 (void) send_prepare_for(m, m->action_what, false);
2944
2945                 m->action_job = mfree(m->action_job);
2946                 m->action_unit = NULL;
2947                 m->action_what = 0;
2948                 return 0;
2949         }
2950
2951         session = hashmap_get(m->session_units, unit);
2952         if (session && streq_ptr(path, session->scope_job)) {
2953                 session->scope_job = mfree(session->scope_job);
2954                 session_jobs_reply(session, unit, result);
2955
2956                 session_save(session);
2957                 user_save(session->user);
2958                 session_add_to_gc_queue(session);
2959         }
2960
2961         user = hashmap_get(m->user_units, unit);
2962         if (user &&
2963             (streq_ptr(path, user->service_job) ||
2964              streq_ptr(path, user->slice_job))) {
2965
2966                 if (streq_ptr(path, user->service_job))
2967                         user->service_job = mfree(user->service_job);
2968
2969                 if (streq_ptr(path, user->slice_job))
2970                         user->slice_job = mfree(user->slice_job);
2971
2972                 LIST_FOREACH(sessions_by_user, session, user->sessions)
2973                         session_jobs_reply(session, unit, result);
2974
2975                 user_save(user);
2976                 user_add_to_gc_queue(user);
2977         }
2978
2979         return 0;
2980 }
2981
2982 int match_unit_removed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2983         const char *path, *unit;
2984         Manager *m = userdata;
2985         Session *session;
2986         User *user;
2987         int r;
2988
2989         assert(message);
2990         assert(m);
2991
2992         r = sd_bus_message_read(message, "so", &unit, &path);
2993         if (r < 0) {
2994                 bus_log_parse_error(r);
2995                 return 0;
2996         }
2997
2998         session = hashmap_get(m->session_units, unit);
2999         if (session)
3000                 session_add_to_gc_queue(session);
3001
3002         user = hashmap_get(m->user_units, unit);
3003         if (user)
3004                 user_add_to_gc_queue(user);
3005
3006         return 0;
3007 }
3008
3009 int match_properties_changed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3010         _cleanup_free_ char *unit = NULL;
3011         Manager *m = userdata;
3012         const char *path;
3013         Session *session;
3014         User *user;
3015         int r;
3016
3017         assert(message);
3018         assert(m);
3019
3020         path = sd_bus_message_get_path(message);
3021         if (!path)
3022                 return 0;
3023
3024         r = unit_name_from_dbus_path(path, &unit);
3025         if (r == -EINVAL) /* not a unit */
3026                 return 0;
3027         if (r < 0) {
3028                 log_oom();
3029                 return 0;
3030         }
3031
3032         session = hashmap_get(m->session_units, unit);
3033         if (session)
3034                 session_add_to_gc_queue(session);
3035
3036         user = hashmap_get(m->user_units, unit);
3037         if (user)
3038                 user_add_to_gc_queue(user);
3039
3040         return 0;
3041 }
3042
3043 int match_reloading(sd_bus_message *message, void *userdata, sd_bus_error *error) {
3044         Manager *m = userdata;
3045         Session *session;
3046         Iterator i;
3047         int b, r;
3048
3049         assert(message);
3050         assert(m);
3051
3052         r = sd_bus_message_read(message, "b", &b);
3053         if (r < 0) {
3054                 bus_log_parse_error(r);
3055                 return 0;
3056         }
3057
3058         if (b)
3059                 return 0;
3060
3061         /* systemd finished reloading, let's recheck all our sessions */
3062         log_debug("System manager has been reloaded, rechecking sessions...");
3063
3064         HASHMAP_FOREACH(session, m->sessions, i)
3065                 session_add_to_gc_queue(session);
3066
3067         return 0;
3068 }
3069 #endif // 0
3070
3071 int manager_send_changed(Manager *manager, const char *property, ...) {
3072         char **l;
3073
3074         assert(manager);
3075
3076         l = strv_from_stdarg_alloca(property);
3077
3078         return sd_bus_emit_properties_changed_strv(
3079                         manager->bus,
3080                         "/org/freedesktop/login1",
3081                         "org.freedesktop.login1.Manager",
3082                         l);
3083 }
3084
3085 #if 0 /// UNNEEDED by elogind
3086 static int strdup_job(sd_bus_message *reply, char **job) {
3087         const char *j;
3088         char *copy;
3089         int r;
3090
3091         r = sd_bus_message_read(reply, "o", &j);
3092         if (r < 0)
3093                 return r;
3094
3095         copy = strdup(j);
3096         if (!copy)
3097                 return -ENOMEM;
3098
3099         *job = copy;
3100         return 1;
3101 }
3102
3103 int manager_start_slice(
3104                 Manager *manager,
3105                 const char *slice,
3106                 const char *description,
3107                 const char *after,
3108                 const char *after2,
3109                 uint64_t tasks_max,
3110                 sd_bus_error *error,
3111                 char **job) {
3112
3113         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
3114         int r;
3115
3116         assert(manager);
3117         assert(slice);
3118         assert(job);
3119
3120         r = sd_bus_message_new_method_call(
3121                         manager->bus,
3122                         &m,
3123                         "org.freedesktop.systemd1",
3124                         "/org/freedesktop/systemd1",
3125                         "org.freedesktop.systemd1.Manager",
3126                         "StartTransientUnit");
3127         if (r < 0)
3128                 return r;
3129
3130         r = sd_bus_message_append(m, "ss", strempty(slice), "fail");
3131         if (r < 0)
3132                 return r;
3133
3134         r = sd_bus_message_open_container(m, 'a', "(sv)");
3135         if (r < 0)
3136                 return r;
3137
3138         if (!isempty(description)) {
3139                 r = sd_bus_message_append(m, "(sv)", "Description", "s", description);
3140                 if (r < 0)
3141                         return r;
3142         }
3143
3144         if (!isempty(after)) {
3145                 r = sd_bus_message_append(m, "(sv)", "After", "as", 1, after);
3146                 if (r < 0)
3147                         return r;
3148         }
3149
3150         if (!isempty(after2)) {
3151                 r = sd_bus_message_append(m, "(sv)", "After", "as", 1, after2);
3152                 if (r < 0)
3153                         return r;
3154         }
3155
3156         r = sd_bus_message_append(m, "(sv)", "TasksMax", "t", tasks_max);
3157         if (r < 0)
3158                 return r;
3159
3160         r = sd_bus_message_close_container(m);
3161         if (r < 0)
3162                 return r;
3163
3164         r = sd_bus_message_append(m, "a(sa(sv))", 0);
3165         if (r < 0)
3166                 return r;
3167
3168         r = sd_bus_call(manager->bus, m, 0, error, &reply);
3169         if (r < 0)
3170                 return r;
3171
3172         return strdup_job(reply, job);
3173 }
3174
3175 int manager_start_scope(
3176                 Manager *manager,
3177                 const char *scope,
3178                 pid_t pid,
3179                 const char *slice,
3180                 const char *description,
3181                 const char *after,
3182                 const char *after2,
3183                 uint64_t tasks_max,
3184                 sd_bus_error *error,
3185                 char **job) {
3186
3187         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
3188         int r;
3189
3190         assert(manager);
3191         assert(scope);
3192         assert(pid > 1);
3193         assert(job);
3194
3195         r = sd_bus_message_new_method_call(
3196                         manager->bus,
3197                         &m,
3198                         "org.freedesktop.systemd1",
3199                         "/org/freedesktop/systemd1",
3200                         "org.freedesktop.systemd1.Manager",
3201                         "StartTransientUnit");
3202         if (r < 0)
3203                 return r;
3204
3205         r = sd_bus_message_append(m, "ss", strempty(scope), "fail");
3206         if (r < 0)
3207                 return r;
3208
3209         r = sd_bus_message_open_container(m, 'a', "(sv)");
3210         if (r < 0)
3211                 return r;
3212
3213         if (!isempty(slice)) {
3214                 r = sd_bus_message_append(m, "(sv)", "Slice", "s", slice);
3215                 if (r < 0)
3216                         return r;
3217         }
3218
3219         if (!isempty(description)) {
3220                 r = sd_bus_message_append(m, "(sv)", "Description", "s", description);
3221                 if (r < 0)
3222                         return r;
3223         }
3224
3225         if (!isempty(after)) {
3226                 r = sd_bus_message_append(m, "(sv)", "After", "as", 1, after);
3227                 if (r < 0)
3228                         return r;
3229         }
3230
3231         if (!isempty(after2)) {
3232                 r = sd_bus_message_append(m, "(sv)", "After", "as", 1, after2);
3233                 if (r < 0)
3234                         return r;
3235         }
3236
3237         /* cgroup empty notification is not available in containers
3238          * currently. To make this less problematic, let's shorten the
3239          * stop timeout for sessions, so that we don't wait
3240          * forever. */
3241
3242         /* Make sure that the session shells are terminated with
3243          * SIGHUP since bash and friends tend to ignore SIGTERM */
3244         r = sd_bus_message_append(m, "(sv)", "SendSIGHUP", "b", true);
3245         if (r < 0)
3246                 return r;
3247
3248         r = sd_bus_message_append(m, "(sv)", "PIDs", "au", 1, pid);
3249         if (r < 0)
3250                 return r;
3251
3252         r = sd_bus_message_append(m, "(sv)", "TasksMax", "t", tasks_max);
3253         if (r < 0)
3254                 return r;
3255
3256         r = sd_bus_message_close_container(m);
3257         if (r < 0)
3258                 return r;
3259
3260         r = sd_bus_message_append(m, "a(sa(sv))", 0);
3261         if (r < 0)
3262                 return r;
3263
3264         r = sd_bus_call(manager->bus, m, 0, error, &reply);
3265         if (r < 0)
3266                 return r;
3267
3268         return strdup_job(reply, job);
3269 }
3270
3271 int manager_start_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) {
3272         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
3273         int r;
3274
3275         assert(manager);
3276         assert(unit);
3277         assert(job);
3278
3279         r = sd_bus_call_method(
3280                         manager->bus,
3281                         "org.freedesktop.systemd1",
3282                         "/org/freedesktop/systemd1",
3283                         "org.freedesktop.systemd1.Manager",
3284                         "StartUnit",
3285                         error,
3286                         &reply,
3287                         "ss", unit, "replace");
3288         if (r < 0)
3289                 return r;
3290
3291         return strdup_job(reply, job);
3292 }
3293
3294 int manager_stop_unit(Manager *manager, const char *unit, sd_bus_error *error, char **job) {
3295         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
3296         int r;
3297
3298         assert(manager);
3299         assert(unit);
3300         assert(job);
3301
3302         r = sd_bus_call_method(
3303                         manager->bus,
3304                         "org.freedesktop.systemd1",
3305                         "/org/freedesktop/systemd1",
3306                         "org.freedesktop.systemd1.Manager",
3307                         "StopUnit",
3308                         error,
3309                         &reply,
3310                         "ss", unit, "fail");
3311         if (r < 0) {
3312                 if (sd_bus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT) ||
3313                     sd_bus_error_has_name(error, BUS_ERROR_LOAD_FAILED)) {
3314
3315                         *job = NULL;
3316                         sd_bus_error_free(error);
3317                         return 0;
3318                 }
3319
3320                 return r;
3321         }
3322
3323         return strdup_job(reply, job);
3324 }
3325
3326 int manager_abandon_scope(Manager *manager, const char *scope, sd_bus_error *error) {
3327         _cleanup_free_ char *path = NULL;
3328         int r;
3329
3330         assert(manager);
3331         assert(scope);
3332
3333         path = unit_dbus_path_from_name(scope);
3334         if (!path)
3335                 return -ENOMEM;
3336
3337         r = sd_bus_call_method(
3338                         manager->bus,
3339                         "org.freedesktop.systemd1",
3340                         path,
3341                         "org.freedesktop.systemd1.Scope",
3342                         "Abandon",
3343                         error,
3344                         NULL,
3345                         NULL);
3346         if (r < 0) {
3347                 if (sd_bus_error_has_name(error, BUS_ERROR_NO_SUCH_UNIT) ||
3348                     sd_bus_error_has_name(error, BUS_ERROR_LOAD_FAILED) ||
3349                     sd_bus_error_has_name(error, BUS_ERROR_SCOPE_NOT_RUNNING)) {
3350                         sd_bus_error_free(error);
3351                         return 0;
3352                 }
3353
3354                 return r;
3355         }
3356
3357         return 1;
3358 }
3359
3360 int manager_kill_unit(Manager *manager, const char *unit, KillWho who, int signo, sd_bus_error *error) {
3361         assert(manager);
3362         assert(unit);
3363
3364         return sd_bus_call_method(
3365                         manager->bus,
3366                         "org.freedesktop.systemd1",
3367                         "/org/freedesktop/systemd1",
3368                         "org.freedesktop.systemd1.Manager",
3369                         "KillUnit",
3370                         error,
3371                         NULL,
3372                         "ssi", unit, who == KILL_LEADER ? "main" : "all", signo);
3373 }
3374
3375 int manager_unit_is_active(Manager *manager, const char *unit) {
3376         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
3377         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
3378         _cleanup_free_ char *path = NULL;
3379         const char *state;
3380         int r;
3381
3382         assert(manager);
3383         assert(unit);
3384
3385         path = unit_dbus_path_from_name(unit);
3386         if (!path)
3387                 return -ENOMEM;
3388
3389         r = sd_bus_get_property(
3390                         manager->bus,
3391                         "org.freedesktop.systemd1",
3392                         path,
3393                         "org.freedesktop.systemd1.Unit",
3394                         "ActiveState",
3395                         &error,
3396                         &reply,
3397                         "s");
3398         if (r < 0) {
3399                 /* systemd might have droppped off momentarily, let's
3400                  * not make this an error */
3401                 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_NO_REPLY) ||
3402                     sd_bus_error_has_name(&error, SD_BUS_ERROR_DISCONNECTED))
3403                         return true;
3404
3405                 /* If the unit is already unloaded then it's not
3406                  * active */
3407                 if (sd_bus_error_has_name(&error, BUS_ERROR_NO_SUCH_UNIT) ||
3408                     sd_bus_error_has_name(&error, BUS_ERROR_LOAD_FAILED))
3409                         return false;
3410
3411                 return r;
3412         }
3413
3414         r = sd_bus_message_read(reply, "s", &state);
3415         if (r < 0)
3416                 return -EINVAL;
3417
3418         return !streq(state, "inactive") && !streq(state, "failed");
3419 }
3420
3421 int manager_job_is_active(Manager *manager, const char *path) {
3422         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
3423         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
3424         int r;
3425
3426         assert(manager);
3427         assert(path);
3428
3429         r = sd_bus_get_property(
3430                         manager->bus,
3431                         "org.freedesktop.systemd1",
3432                         path,
3433                         "org.freedesktop.systemd1.Job",
3434                         "State",
3435                         &error,
3436                         &reply,
3437                         "s");
3438         if (r < 0) {
3439                 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_NO_REPLY) ||
3440                     sd_bus_error_has_name(&error, SD_BUS_ERROR_DISCONNECTED))
3441                         return true;
3442
3443                 if (sd_bus_error_has_name(&error, SD_BUS_ERROR_UNKNOWN_OBJECT))
3444                         return false;
3445
3446                 return r;
3447         }
3448
3449         /* We don't actually care about the state really. The fact
3450          * that we could read the job state is enough for us */
3451
3452         return true;
3453 }
3454 #endif // 0