src/core/dbus-manager.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 /***
   3   This file is part of systemd.
   4
   5   Copyright 2010 Lennart Poettering
   6 ***/
   7
   8 #include <errno.h>
   9 #include <sys/prctl.h>
  10 #include <sys/statvfs.h>
  11 #include <unistd.h>
  12
  13 #include "alloc-util.h"
  14 #include "architecture.h"
  15 #include "build.h"
  16 #include "bus-common-errors.h"
  17 #include "dbus-execute.h"
  18 #include "dbus-job.h"
  19 #include "dbus-manager.h"
  20 #include "dbus-unit.h"
  21 #include "dbus.h"
  22 #include "env-util.h"
  23 #include "fd-util.h"
  24 #include "fileio.h"
  25 #include "format-util.h"
  26 #include "fs-util.h"
  27 #include "install.h"
  28 #include "log.h"
  29 #include "os-util.h"
  30 #include "parse-util.h"
  31 #include "path-util.h"
  32 #include "selinux-access.h"
  33 #include "stat-util.h"
  34 #include "string-util.h"
  35 #include "strv.h"
  36 #include "syslog-util.h"
  37 #include "user-util.h"
  38 #include "virt.h"
  39 #include "watchdog.h"
  40
  41 /* Require 16MiB free in /run/systemd for reloading/reexecing. After all we need to serialize our state there, and if
  42  * we can't we'll fail badly. */
  43 #define RELOAD_DISK_SPACE_MIN (UINT64_C(16) * UINT64_C(1024) * UINT64_C(1024))
  44
  45 static UnitFileFlags unit_file_bools_to_flags(bool runtime, bool force) {
  46         return (runtime ? UNIT_FILE_RUNTIME : 0) |
  47                (force   ? UNIT_FILE_FORCE   : 0);
  48 }
  49
  50 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_version, "s", PACKAGE_VERSION);
  51 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_features, "s", SYSTEMD_FEATURES);
  52 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_architecture, "s", architecture_to_string(uname_architecture()));
  53 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_log_target, "s", log_target_to_string(log_get_target()));
  54 static BUS_DEFINE_PROPERTY_GET2(property_get_system_state, "s", Manager, manager_state, manager_state_to_string);
  55 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_timer_slack_nsec, "t", (uint64_t) prctl(PR_GET_TIMERSLACK));
  56 static BUS_DEFINE_PROPERTY_GET_REF(property_get_hashmap_size, "u", Hashmap *, hashmap_size);
  57 static BUS_DEFINE_PROPERTY_GET_REF(property_get_set_size, "u", Set *, set_size);
  58
  59 static int property_get_virtualization(
  60                 sd_bus *bus,
  61                 const char *path,
  62                 const char *interface,
  63                 const char *property,
  64                 sd_bus_message *reply,
  65                 void *userdata,
  66                 sd_bus_error *error) {
  67
  68         int v;
  69
  70         assert(bus);
  71         assert(reply);
  72
  73         v = detect_virtualization();
  74
  75         /* Make sure to return the empty string when we detect no virtualization, as that is the API.
  76          *
  77          * https://github.com/systemd/systemd/issues/1423
  78          */
  79
  80         return sd_bus_message_append(
  81                         reply, "s",
  82                         v == VIRTUALIZATION_NONE ? NULL : virtualization_to_string(v));
  83 }
  84
  85 static int property_get_tainted(
  86                 sd_bus *bus,
  87                 const char *path,
  88                 const char *interface,
  89                 const char *property,
  90                 sd_bus_message *reply,
  91                 void *userdata,
  92                 sd_bus_error *error) {
  93
  94         _cleanup_free_ char *s = NULL;
  95         Manager *m = userdata;
  96
  97         assert(bus);
  98         assert(reply);
  99         assert(m);
 100
 101         s = manager_taint_string(m);
 102         if (!s)
 103                 return log_oom();
 104
 105         return sd_bus_message_append(reply, "s", s);
 106 }
 107
 108 static int property_set_log_target(
 109                 sd_bus *bus,
 110                 const char *path,
 111                 const char *interface,
 112                 const char *property,
 113                 sd_bus_message *value,
 114                 void *userdata,
 115                 sd_bus_error *error) {
 116
 117         const char *t;
 118         int r;
 119
 120         assert(bus);
 121         assert(value);
 122
 123         r = sd_bus_message_read(value, "s", &t);
 124         if (r < 0)
 125                 return r;
 126
 127         return log_set_target_from_string(t);
 128 }
 129
 130 static int property_get_log_level(
 131                 sd_bus *bus,
 132                 const char *path,
 133                 const char *interface,
 134                 const char *property,
 135                 sd_bus_message *reply,
 136                 void *userdata,
 137                 sd_bus_error *error) {
 138
 139         _cleanup_free_ char *t = NULL;
 140         int r;
 141
 142         assert(bus);
 143         assert(reply);
 144
 145         r = log_level_to_string_alloc(log_get_max_level(), &t);
 146         if (r < 0)
 147                 return r;
 148
 149         return sd_bus_message_append(reply, "s", t);
 150 }
 151
 152 static int property_set_log_level(
 153                 sd_bus *bus,
 154                 const char *path,
 155                 const char *interface,
 156                 const char *property,
 157                 sd_bus_message *value,
 158                 void *userdata,
 159                 sd_bus_error *error) {
 160
 161         const char *t;
 162         int r;
 163
 164         assert(bus);
 165         assert(value);
 166
 167         r = sd_bus_message_read(value, "s", &t);
 168         if (r < 0)
 169                 return r;
 170
 171         r = log_set_max_level_from_string(t);
 172         if (r == 0)
 173                 log_info("Setting log level to %s.", t);
 174         return r;
 175 }
 176
 177 static int property_get_progress(
 178                 sd_bus *bus,
 179                 const char *path,
 180                 const char *interface,
 181                 const char *property,
 182                 sd_bus_message *reply,
 183                 void *userdata,
 184                 sd_bus_error *error) {
 185
 186         Manager *m = userdata;
 187         double d;
 188
 189         assert(bus);
 190         assert(reply);
 191         assert(m);
 192
 193         if (MANAGER_IS_FINISHED(m))
 194                 d = 1.0;
 195         else
 196                 d = 1.0 - ((double) hashmap_size(m->jobs) / (double) m->n_installed_jobs);
 197
 198         return sd_bus_message_append(reply, "d", d);
 199 }
 200
 201 static int property_get_show_status(
 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         int b;
 212
 213         assert(bus);
 214         assert(reply);
 215         assert(m);
 216
 217         b = m->show_status > 0;
 218         return sd_bus_message_append_basic(reply, 'b', &b);
 219 }
 220
 221 static int property_set_runtime_watchdog(
 222                 sd_bus *bus,
 223                 const char *path,
 224                 const char *interface,
 225                 const char *property,
 226                 sd_bus_message *value,
 227                 void *userdata,
 228                 sd_bus_error *error) {
 229
 230         usec_t *t = userdata;
 231         int r;
 232
 233         assert(bus);
 234         assert(value);
 235
 236         assert_cc(sizeof(usec_t) == sizeof(uint64_t));
 237
 238         r = sd_bus_message_read(value, "t", t);
 239         if (r < 0)
 240                 return r;
 241
 242         return watchdog_set_timeout(t);
 243 }
 244
 245 static int bus_get_unit_by_name(Manager *m, sd_bus_message *message, const char *name, Unit **ret_unit, sd_bus_error *error) {
 246         Unit *u;
 247         int r;
 248
 249         assert(m);
 250         assert(message);
 251         assert(ret_unit);
 252
 253         /* More or less a wrapper around manager_get_unit() that generates nice errors and has one trick up its sleeve:
 254          * if the name is specified empty we use the client's unit. */
 255
 256         if (isempty(name)) {
 257                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 258                 pid_t pid;
 259
 260                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 261                 if (r < 0)
 262                         return r;
 263
 264                 r = sd_bus_creds_get_pid(creds, &pid);
 265                 if (r < 0)
 266                         return r;
 267
 268                 u = manager_get_unit_by_pid(m, pid);
 269                 if (!u)
 270                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Client not member of any unit.");
 271         } else {
 272                 u = manager_get_unit(m, name);
 273                 if (!u)
 274                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s not loaded.", name);
 275         }
 276
 277         *ret_unit = u;
 278         return 0;
 279 }
 280
 281 static int bus_load_unit_by_name(Manager *m, sd_bus_message *message, const char *name, Unit **ret_unit, sd_bus_error *error) {
 282         assert(m);
 283         assert(message);
 284         assert(ret_unit);
 285
 286         /* Pretty much the same as bus_get_unit_by_name(), but we also load the unit if necessary. */
 287
 288         if (isempty(name))
 289                 return bus_get_unit_by_name(m, message, name, ret_unit, error);
 290
 291         return manager_load_unit(m, name, NULL, error, ret_unit);
 292 }
 293
 294 static int method_get_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 295         _cleanup_free_ char *path = NULL;
 296         Manager *m = userdata;
 297         const char *name;
 298         Unit *u;
 299         int r;
 300
 301         assert(message);
 302         assert(m);
 303
 304         /* Anyone can call this method */
 305
 306         r = sd_bus_message_read(message, "s", &name);
 307         if (r < 0)
 308                 return r;
 309
 310         r = bus_get_unit_by_name(m, message, name, &u, error);
 311         if (r < 0)
 312                 return r;
 313
 314         r = mac_selinux_unit_access_check(u, message, "status", error);
 315         if (r < 0)
 316                 return r;
 317
 318         path = unit_dbus_path(u);
 319         if (!path)
 320                 return -ENOMEM;
 321
 322         return sd_bus_reply_method_return(message, "o", path);
 323 }
 324
 325 static int method_get_unit_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 326         _cleanup_free_ char *path = NULL;
 327         Manager *m = userdata;
 328         pid_t pid;
 329         Unit *u;
 330         int r;
 331
 332         assert(message);
 333         assert(m);
 334
 335         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 336
 337         /* Anyone can call this method */
 338
 339         r = sd_bus_message_read(message, "u", &pid);
 340         if (r < 0)
 341                 return r;
 342         if (pid < 0)
 343                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid PID " PID_FMT, pid);
 344
 345         if (pid == 0) {
 346                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 347
 348                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 349                 if (r < 0)
 350                         return r;
 351
 352                 r = sd_bus_creds_get_pid(creds, &pid);
 353                 if (r < 0)
 354                         return r;
 355         }
 356
 357         u = manager_get_unit_by_pid(m, pid);
 358         if (!u)
 359                 return sd_bus_error_setf(error, BUS_ERROR_NO_UNIT_FOR_PID, "PID "PID_FMT" does not belong to any loaded unit.", pid);
 360
 361         r = mac_selinux_unit_access_check(u, message, "status", error);
 362         if (r < 0)
 363                 return r;
 364
 365         path = unit_dbus_path(u);
 366         if (!path)
 367                 return -ENOMEM;
 368
 369         return sd_bus_reply_method_return(message, "o", path);
 370 }
 371
 372 static int method_get_unit_by_invocation_id(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 373         _cleanup_free_ char *path = NULL;
 374         Manager *m = userdata;
 375         sd_id128_t id;
 376         const void *a;
 377         Unit *u;
 378         size_t sz;
 379         int r;
 380
 381         assert(message);
 382         assert(m);
 383
 384         /* Anyone can call this method */
 385
 386         r = sd_bus_message_read_array(message, 'y', &a, &sz);
 387         if (r < 0)
 388                 return r;
 389         if (sz == 0)
 390                 id = SD_ID128_NULL;
 391         else if (sz == 16)
 392                 memcpy(&id, a, sz);
 393         else
 394                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid invocation ID");
 395
 396         if (sd_id128_is_null(id)) {
 397                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 398                 pid_t pid;
 399
 400                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 401                 if (r < 0)
 402                         return r;
 403
 404                 r = sd_bus_creds_get_pid(creds, &pid);
 405                 if (r < 0)
 406                         return r;
 407
 408                 u = manager_get_unit_by_pid(m, pid);
 409                 if (!u)
 410                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Client " PID_FMT " not member of any unit.", pid);
 411         } else {
 412                 u = hashmap_get(m->units_by_invocation_id, &id);
 413                 if (!u)
 414                         return sd_bus_error_setf(error, BUS_ERROR_NO_UNIT_FOR_INVOCATION_ID, "No unit with the specified invocation ID " SD_ID128_FORMAT_STR " known.", SD_ID128_FORMAT_VAL(id));
 415         }
 416
 417         r = mac_selinux_unit_access_check(u, message, "status", error);
 418         if (r < 0)
 419                 return r;
 420
 421         /* So here's a special trick: the bus path we return actually references the unit by its invocation ID instead
 422          * of the unit name. This means it stays valid only as long as the invocation ID stays the same. */
 423         path = unit_dbus_path_invocation_id(u);
 424         if (!path)
 425                 return -ENOMEM;
 426
 427         return sd_bus_reply_method_return(message, "o", path);
 428 }
 429
 430 static int method_get_unit_by_control_group(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 431         _cleanup_free_ char *path = NULL;
 432         Manager *m = userdata;
 433         const char *cgroup;
 434         Unit *u;
 435         int r;
 436
 437         r = sd_bus_message_read(message, "s", &cgroup);
 438         if (r < 0)
 439                 return r;
 440
 441         u = manager_get_unit_by_cgroup(m, cgroup);
 442         if (!u)
 443                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Control group '%s' is not valid or not managed by this instance", cgroup);
 444
 445         r = mac_selinux_unit_access_check(u, message, "status", error);
 446         if (r < 0)
 447                 return r;
 448
 449         path = unit_dbus_path(u);
 450         if (!path)
 451                 return -ENOMEM;
 452
 453         return sd_bus_reply_method_return(message, "o", path);
 454 }
 455
 456 static int method_load_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 457         _cleanup_free_ char *path = NULL;
 458         Manager *m = userdata;
 459         const char *name;
 460         Unit *u;
 461         int r;
 462
 463         assert(message);
 464         assert(m);
 465
 466         /* Anyone can call this method */
 467
 468         r = sd_bus_message_read(message, "s", &name);
 469         if (r < 0)
 470                 return r;
 471
 472         r = bus_load_unit_by_name(m, message, name, &u, error);
 473         if (r < 0)
 474                 return r;
 475
 476         r = mac_selinux_unit_access_check(u, message, "status", error);
 477         if (r < 0)
 478                 return r;
 479
 480         path = unit_dbus_path(u);
 481         if (!path)
 482                 return -ENOMEM;
 483
 484         return sd_bus_reply_method_return(message, "o", path);
 485 }
 486
 487 static int method_start_unit_generic(sd_bus_message *message, Manager *m, JobType job_type, bool reload_if_possible, sd_bus_error *error) {
 488         const char *name;
 489         Unit *u;
 490         int r;
 491
 492         assert(message);
 493         assert(m);
 494
 495         r = sd_bus_message_read(message, "s", &name);
 496         if (r < 0)
 497                 return r;
 498
 499         r = manager_load_unit(m, name, NULL, error, &u);
 500         if (r < 0)
 501                 return r;
 502
 503         return bus_unit_method_start_generic(message, u, job_type, reload_if_possible, error);
 504 }
 505
 506 static int method_start_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 507         return method_start_unit_generic(message, userdata, JOB_START, false, error);
 508 }
 509
 510 static int method_stop_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 511         return method_start_unit_generic(message, userdata, JOB_STOP, false, error);
 512 }
 513
 514 static int method_reload_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 515         return method_start_unit_generic(message, userdata, JOB_RELOAD, false, error);
 516 }
 517
 518 static int method_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 519         return method_start_unit_generic(message, userdata, JOB_RESTART, false, error);
 520 }
 521
 522 static int method_try_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 523         return method_start_unit_generic(message, userdata, JOB_TRY_RESTART, false, error);
 524 }
 525
 526 static int method_reload_or_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 527         return method_start_unit_generic(message, userdata, JOB_RESTART, true, error);
 528 }
 529
 530 static int method_reload_or_try_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 531         return method_start_unit_generic(message, userdata, JOB_TRY_RESTART, true, error);
 532 }
 533
 534 static int method_start_unit_replace(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 535         Manager *m = userdata;
 536         const char *old_name;
 537         Unit *u;
 538         int r;
 539
 540         assert(message);
 541         assert(m);
 542
 543         r = sd_bus_message_read(message, "s", &old_name);
 544         if (r < 0)
 545                 return r;
 546
 547         r = bus_get_unit_by_name(m, message, old_name, &u, error);
 548         if (r < 0)
 549                 return r;
 550         if (!u->job || u->job->type != JOB_START)
 551                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "No job queued for unit %s", old_name);
 552
 553         return method_start_unit_generic(message, m, JOB_START, false, error);
 554 }
 555
 556 static int method_kill_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 557         Manager *m = userdata;
 558         const char *name;
 559         Unit *u;
 560         int r;
 561
 562         assert(message);
 563         assert(m);
 564
 565         r = sd_bus_message_read(message, "s", &name);
 566         if (r < 0)
 567                 return r;
 568
 569         r = bus_get_unit_by_name(m, message, name, &u, error);
 570         if (r < 0)
 571                 return r;
 572
 573         return bus_unit_method_kill(message, u, error);
 574 }
 575
 576 static int method_reset_failed_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 577         Manager *m = userdata;
 578         const char *name;
 579         Unit *u;
 580         int r;
 581
 582         assert(message);
 583         assert(m);
 584
 585         r = sd_bus_message_read(message, "s", &name);
 586         if (r < 0)
 587                 return r;
 588
 589         r = bus_get_unit_by_name(m, message, name, &u, error);
 590         if (r < 0)
 591                 return r;
 592
 593         return bus_unit_method_reset_failed(message, u, error);
 594 }
 595
 596 static int method_set_unit_properties(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 597         Manager *m = userdata;
 598         const char *name;
 599         Unit *u;
 600         int r;
 601
 602         assert(message);
 603         assert(m);
 604
 605         r = sd_bus_message_read(message, "s", &name);
 606         if (r < 0)
 607                 return r;
 608
 609         r = bus_load_unit_by_name(m, message, name, &u, error);
 610         if (r < 0)
 611                 return r;
 612
 613         r = bus_unit_validate_load_state(u, error);
 614         if (r < 0)
 615                 return r;
 616
 617         return bus_unit_method_set_properties(message, u, error);
 618 }
 619
 620 static int method_ref_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 621         Manager *m = userdata;
 622         const char *name;
 623         Unit *u;
 624         int r;
 625
 626         assert(message);
 627         assert(m);
 628
 629         r = sd_bus_message_read(message, "s", &name);
 630         if (r < 0)
 631                 return r;
 632
 633         r = bus_load_unit_by_name(m, message, name, &u, error);
 634         if (r < 0)
 635                 return r;
 636
 637         r = bus_unit_validate_load_state(u, error);
 638         if (r < 0)
 639                 return r;
 640
 641         return bus_unit_method_ref(message, u, error);
 642 }
 643
 644 static int method_unref_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 645         Manager *m = userdata;
 646         const char *name;
 647         Unit *u;
 648         int r;
 649
 650         assert(message);
 651         assert(m);
 652
 653         r = sd_bus_message_read(message, "s", &name);
 654         if (r < 0)
 655                 return r;
 656
 657         r = bus_load_unit_by_name(m, message, name, &u, error);
 658         if (r < 0)
 659                 return r;
 660
 661         r = bus_unit_validate_load_state(u, error);
 662         if (r < 0)
 663                 return r;
 664
 665         return bus_unit_method_unref(message, u, error);
 666 }
 667
 668 static int reply_unit_info(sd_bus_message *reply, Unit *u) {
 669         _cleanup_free_ char *unit_path = NULL, *job_path = NULL;
 670         Unit *following;
 671
 672         following = unit_following(u);
 673
 674         unit_path = unit_dbus_path(u);
 675         if (!unit_path)
 676                 return -ENOMEM;
 677
 678         if (u->job) {
 679                 job_path = job_dbus_path(u->job);
 680                 if (!job_path)
 681                         return -ENOMEM;
 682         }
 683
 684         return sd_bus_message_append(
 685                         reply, "(ssssssouso)",
 686                         u->id,
 687                         unit_description(u),
 688                         unit_load_state_to_string(u->load_state),
 689                         unit_active_state_to_string(unit_active_state(u)),
 690                         unit_sub_state_to_string(u),
 691                         following ? following->id : "",
 692                         unit_path,
 693                         u->job ? u->job->id : 0,
 694                         u->job ? job_type_to_string(u->job->type) : "",
 695                         job_path ? job_path : "/");
 696 }
 697
 698 static int method_list_units_by_names(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 699         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 700         Manager *m = userdata;
 701         int r;
 702         char **unit;
 703         _cleanup_strv_free_ char **units = NULL;
 704
 705         assert(message);
 706         assert(m);
 707
 708         r = sd_bus_message_read_strv(message, &units);
 709         if (r < 0)
 710                 return r;
 711
 712         r = sd_bus_message_new_method_return(message, &reply);
 713         if (r < 0)
 714                 return r;
 715
 716         r = sd_bus_message_open_container(reply, 'a', "(ssssssouso)");
 717         if (r < 0)
 718                 return r;
 719
 720         STRV_FOREACH(unit, units) {
 721                 Unit *u;
 722
 723                 if (!unit_name_is_valid(*unit, UNIT_NAME_ANY))
 724                         continue;
 725
 726                 r = bus_load_unit_by_name(m, message, *unit, &u, error);
 727                 if (r < 0)
 728                         return r;
 729
 730                 r = reply_unit_info(reply, u);
 731                 if (r < 0)
 732                         return r;
 733         }
 734
 735         r = sd_bus_message_close_container(reply);
 736         if (r < 0)
 737                 return r;
 738
 739         return sd_bus_send(NULL, reply, NULL);
 740 }
 741
 742 static int method_get_unit_processes(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 743         Manager *m = userdata;
 744         const char *name;
 745         Unit *u;
 746         int r;
 747
 748         assert(message);
 749         assert(m);
 750
 751         r = sd_bus_message_read(message, "s", &name);
 752         if (r < 0)
 753                 return r;
 754
 755         r = bus_get_unit_by_name(m, message, name, &u, error);
 756         if (r < 0)
 757                 return r;
 758
 759         return bus_unit_method_get_processes(message, u, error);
 760 }
 761
 762 static int method_attach_processes_to_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 763         Manager *m = userdata;
 764         const char *name;
 765         Unit *u;
 766         int r;
 767
 768         assert(message);
 769         assert(m);
 770
 771         r = sd_bus_message_read(message, "s", &name);
 772         if (r < 0)
 773                 return r;
 774
 775         r = bus_get_unit_by_name(m, message, name, &u, error);
 776         if (r < 0)
 777                 return r;
 778
 779         return bus_unit_method_attach_processes(message, u, error);
 780 }
 781
 782 static int transient_unit_from_message(
 783                 Manager *m,
 784                 sd_bus_message *message,
 785                 const char *name,
 786                 Unit **unit,
 787                 sd_bus_error *error) {
 788
 789         UnitType t;
 790         Unit *u;
 791         int r;
 792
 793         assert(m);
 794         assert(message);
 795         assert(name);
 796
 797         t = unit_name_to_type(name);
 798         if (t < 0)
 799                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid unit name or type.");
 800
 801         if (!unit_vtable[t]->can_transient)
 802                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unit type %s does not support transient units.", unit_type_to_string(t));
 803
 804         r = manager_load_unit(m, name, NULL, error, &u);
 805         if (r < 0)
 806                 return r;
 807
 808         if (!unit_is_pristine(u))
 809                 return sd_bus_error_setf(error, BUS_ERROR_UNIT_EXISTS, "Unit %s already exists.", name);
 810
 811         /* OK, the unit failed to load and is unreferenced, now let's
 812          * fill in the transient data instead */
 813         r = unit_make_transient(u);
 814         if (r < 0)
 815                 return r;
 816
 817         /* Set our properties */
 818         r = bus_unit_set_properties(u, message, UNIT_RUNTIME, false, error);
 819         if (r < 0)
 820                 return r;
 821
 822         /* If the client asked for it, automatically add a reference to this unit. */
 823         if (u->bus_track_add) {
 824                 r = bus_unit_track_add_sender(u, message);
 825                 if (r < 0)
 826                         return log_error_errno(r, "Failed to watch sender: %m");
 827         }
 828
 829         /* Now load the missing bits of the unit we just created */
 830         unit_add_to_load_queue(u);
 831         manager_dispatch_load_queue(m);
 832
 833         *unit = u;
 834
 835         return 0;
 836 }
 837
 838 static int transient_aux_units_from_message(
 839                 Manager *m,
 840                 sd_bus_message *message,
 841                 sd_bus_error *error) {
 842
 843         int r;
 844
 845         assert(m);
 846         assert(message);
 847
 848         r = sd_bus_message_enter_container(message, 'a', "(sa(sv))");
 849         if (r < 0)
 850                 return r;
 851
 852         while ((r = sd_bus_message_enter_container(message, 'r', "sa(sv)")) > 0) {
 853                 const char *name = NULL;
 854                 Unit *u;
 855
 856                 r = sd_bus_message_read(message, "s", &name);
 857                 if (r < 0)
 858                         return r;
 859
 860                 r = transient_unit_from_message(m, message, name, &u, error);
 861                 if (r < 0)
 862                         return r;
 863
 864                 r = sd_bus_message_exit_container(message);
 865                 if (r < 0)
 866                         return r;
 867         }
 868         if (r < 0)
 869                 return r;
 870
 871         r = sd_bus_message_exit_container(message);
 872         if (r < 0)
 873                 return r;
 874
 875         return 0;
 876 }
 877
 878 static int method_start_transient_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 879         const char *name, *smode;
 880         Manager *m = userdata;
 881         JobMode mode;
 882         Unit *u;
 883         int r;
 884
 885         assert(message);
 886         assert(m);
 887
 888         r = mac_selinux_access_check(message, "start", error);
 889         if (r < 0)
 890                 return r;
 891
 892         r = sd_bus_message_read(message, "ss", &name, &smode);
 893         if (r < 0)
 894                 return r;
 895
 896         mode = job_mode_from_string(smode);
 897         if (mode < 0)
 898                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Job mode %s is invalid.", smode);
 899
 900         r = bus_verify_manage_units_async(m, message, error);
 901         if (r < 0)
 902                 return r;
 903         if (r == 0)
 904                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
 905
 906         r = transient_unit_from_message(m, message, name, &u, error);
 907         if (r < 0)
 908                 return r;
 909
 910         r = transient_aux_units_from_message(m, message, error);
 911         if (r < 0)
 912                 return r;
 913
 914         /* Finally, start it */
 915         return bus_unit_queue_job(message, u, JOB_START, mode, false, error);
 916 }
 917
 918 static int method_get_job(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 919         _cleanup_free_ char *path = NULL;
 920         Manager *m = userdata;
 921         uint32_t id;
 922         Job *j;
 923         int r;
 924
 925         assert(message);
 926         assert(m);
 927
 928         /* Anyone can call this method */
 929
 930         r = sd_bus_message_read(message, "u", &id);
 931         if (r < 0)
 932                 return r;
 933
 934         j = manager_get_job(m, id);
 935         if (!j)
 936                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
 937
 938         r = mac_selinux_unit_access_check(j->unit, message, "status", error);
 939         if (r < 0)
 940                 return r;
 941
 942         path = job_dbus_path(j);
 943         if (!path)
 944                 return -ENOMEM;
 945
 946         return sd_bus_reply_method_return(message, "o", path);
 947 }
 948
 949 static int method_cancel_job(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 950         Manager *m = userdata;
 951         uint32_t id;
 952         Job *j;
 953         int r;
 954
 955         assert(message);
 956         assert(m);
 957
 958         r = sd_bus_message_read(message, "u", &id);
 959         if (r < 0)
 960                 return r;
 961
 962         j = manager_get_job(m, id);
 963         if (!j)
 964                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
 965
 966         return bus_job_method_cancel(message, j, error);
 967 }
 968
 969 static int method_clear_jobs(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 970         Manager *m = userdata;
 971         int r;
 972
 973         assert(message);
 974         assert(m);
 975
 976         r = mac_selinux_access_check(message, "reload", error);
 977         if (r < 0)
 978                 return r;
 979
 980         r = bus_verify_manage_units_async(m, message, error);
 981         if (r < 0)
 982                 return r;
 983         if (r == 0)
 984                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
 985
 986         manager_clear_jobs(m);
 987
 988         return sd_bus_reply_method_return(message, NULL);
 989 }
 990
 991 static int method_reset_failed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 992         Manager *m = userdata;
 993         int r;
 994
 995         assert(message);
 996         assert(m);
 997
 998         r = mac_selinux_access_check(message, "reload", error);
 999         if (r < 0)
1000                 return r;
1001
1002         r = bus_verify_manage_units_async(m, message, error);
1003         if (r < 0)
1004                 return r;
1005         if (r == 0)
1006                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1007
1008         manager_reset_failed(m);
1009
1010         return sd_bus_reply_method_return(message, NULL);
1011 }
1012
1013 static int list_units_filtered(sd_bus_message *message, void *userdata, sd_bus_error *error, char **states, char **patterns) {
1014         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1015         Manager *m = userdata;
1016         const char *k;
1017         Iterator i;
1018         Unit *u;
1019         int r;
1020
1021         assert(message);
1022         assert(m);
1023
1024         /* Anyone can call this method */
1025
1026         r = mac_selinux_access_check(message, "status", error);
1027         if (r < 0)
1028                 return r;
1029
1030         r = sd_bus_message_new_method_return(message, &reply);
1031         if (r < 0)
1032                 return r;
1033
1034         r = sd_bus_message_open_container(reply, 'a', "(ssssssouso)");
1035         if (r < 0)
1036                 return r;
1037
1038         HASHMAP_FOREACH_KEY(u, k, m->units, i) {
1039                 if (k != u->id)
1040                         continue;
1041
1042                 if (!strv_isempty(states) &&
1043                     !strv_contains(states, unit_load_state_to_string(u->load_state)) &&
1044                     !strv_contains(states, unit_active_state_to_string(unit_active_state(u))) &&
1045                     !strv_contains(states, unit_sub_state_to_string(u)))
1046                         continue;
1047
1048                 if (!strv_isempty(patterns) &&
1049                     !strv_fnmatch_or_empty(patterns, u->id, FNM_NOESCAPE))
1050                         continue;
1051
1052                 r = reply_unit_info(reply, u);
1053                 if (r < 0)
1054                         return r;
1055         }
1056
1057         r = sd_bus_message_close_container(reply);
1058         if (r < 0)
1059                 return r;
1060
1061         return sd_bus_send(NULL, reply, NULL);
1062 }
1063
1064 static int method_list_units(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1065         return list_units_filtered(message, userdata, error, NULL, NULL);
1066 }
1067
1068 static int method_list_units_filtered(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1069         _cleanup_strv_free_ char **states = NULL;
1070         int r;
1071
1072         r = sd_bus_message_read_strv(message, &states);
1073         if (r < 0)
1074                 return r;
1075
1076         return list_units_filtered(message, userdata, error, states, NULL);
1077 }
1078
1079 static int method_list_units_by_patterns(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1080         _cleanup_strv_free_ char **states = NULL;
1081         _cleanup_strv_free_ char **patterns = NULL;
1082         int r;
1083
1084         r = sd_bus_message_read_strv(message, &states);
1085         if (r < 0)
1086                 return r;
1087
1088         r = sd_bus_message_read_strv(message, &patterns);
1089         if (r < 0)
1090                 return r;
1091
1092         return list_units_filtered(message, userdata, error, states, patterns);
1093 }
1094
1095 static int method_list_jobs(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1096         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1097         Manager *m = userdata;
1098         Iterator i;
1099         Job *j;
1100         int r;
1101
1102         assert(message);
1103         assert(m);
1104
1105         /* Anyone can call this method */
1106
1107         r = mac_selinux_access_check(message, "status", error);
1108         if (r < 0)
1109                 return r;
1110
1111         r = sd_bus_message_new_method_return(message, &reply);
1112         if (r < 0)
1113                 return r;
1114
1115         r = sd_bus_message_open_container(reply, 'a', "(usssoo)");
1116         if (r < 0)
1117                 return r;
1118
1119         HASHMAP_FOREACH(j, m->jobs, i) {
1120                 _cleanup_free_ char *unit_path = NULL, *job_path = NULL;
1121
1122                 job_path = job_dbus_path(j);
1123                 if (!job_path)
1124                         return -ENOMEM;
1125
1126                 unit_path = unit_dbus_path(j->unit);
1127                 if (!unit_path)
1128                         return -ENOMEM;
1129
1130                 r = sd_bus_message_append(
1131                                 reply, "(usssoo)",
1132                                 j->id,
1133                                 j->unit->id,
1134                                 job_type_to_string(j->type),
1135                                 job_state_to_string(j->state),
1136                                 job_path,
1137                                 unit_path);
1138                 if (r < 0)
1139                         return r;
1140         }
1141
1142         r = sd_bus_message_close_container(reply);
1143         if (r < 0)
1144                 return r;
1145
1146         return sd_bus_send(NULL, reply, NULL);
1147 }
1148
1149 static int method_subscribe(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1150         Manager *m = userdata;
1151         int r;
1152
1153         assert(message);
1154         assert(m);
1155
1156         /* Anyone can call this method */
1157
1158         r = mac_selinux_access_check(message, "status", error);
1159         if (r < 0)
1160                 return r;
1161
1162         if (sd_bus_message_get_bus(message) == m->api_bus) {
1163
1164                 /* Note that direct bus connection subscribe by
1165                  * default, we only track peers on the API bus here */
1166
1167                 if (!m->subscribed) {
1168                         r = sd_bus_track_new(sd_bus_message_get_bus(message), &m->subscribed, NULL, NULL);
1169                         if (r < 0)
1170                                 return r;
1171                 }
1172
1173                 r = sd_bus_track_add_sender(m->subscribed, message);
1174                 if (r < 0)
1175                         return r;
1176                 if (r == 0)
1177                         return sd_bus_error_setf(error, BUS_ERROR_ALREADY_SUBSCRIBED, "Client is already subscribed.");
1178         }
1179
1180         return sd_bus_reply_method_return(message, NULL);
1181 }
1182
1183 static int method_unsubscribe(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1184         Manager *m = userdata;
1185         int r;
1186
1187         assert(message);
1188         assert(m);
1189
1190         /* Anyone can call this method */
1191
1192         r = mac_selinux_access_check(message, "status", error);
1193         if (r < 0)
1194                 return r;
1195
1196         if (sd_bus_message_get_bus(message) == m->api_bus) {
1197                 r = sd_bus_track_remove_sender(m->subscribed, message);
1198                 if (r < 0)
1199                         return r;
1200                 if (r == 0)
1201                         return sd_bus_error_setf(error, BUS_ERROR_NOT_SUBSCRIBED, "Client is not subscribed.");
1202         }
1203
1204         return sd_bus_reply_method_return(message, NULL);
1205 }
1206
1207 static int dump_impl(sd_bus_message *message, void *userdata, sd_bus_error *error, int (*reply)(sd_bus_message *, char *)) {
1208         _cleanup_free_ char *dump = NULL;
1209         Manager *m = userdata;
1210         int r;
1211
1212         assert(message);
1213         assert(m);
1214
1215         /* Anyone can call this method */
1216
1217         r = mac_selinux_access_check(message, "status", error);
1218         if (r < 0)
1219                 return r;
1220
1221         r = manager_get_dump_string(m, &dump);
1222         if (r < 0)
1223                 return r;
1224
1225         return reply(message, dump);
1226 }
1227
1228 static int reply_dump(sd_bus_message *message, char *dump) {
1229         return sd_bus_reply_method_return(message, "s", dump);
1230 }
1231
1232 static int method_dump(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1233         return dump_impl(message, userdata, error, reply_dump);
1234 }
1235
1236 static int reply_dump_by_fd(sd_bus_message *message, char *dump) {
1237         _cleanup_close_ int fd = -1;
1238
1239         fd = acquire_data_fd(dump, strlen(dump), 0);
1240         if (fd < 0)
1241                 return fd;
1242
1243         return sd_bus_reply_method_return(message, "h", fd);
1244 }
1245
1246 static int method_dump_by_fd(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1247         return dump_impl(message, userdata, error, reply_dump_by_fd);
1248 }
1249
1250 static int method_refuse_snapshot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1251         return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Support for snapshots has been removed.");
1252 }
1253
1254 static int verify_run_space(const char *message, sd_bus_error *error) {
1255         struct statvfs svfs;
1256         uint64_t available;
1257
1258         if (statvfs("/run/systemd", &svfs) < 0)
1259                 return sd_bus_error_set_errnof(error, errno, "Failed to statvfs(/run/systemd): %m");
1260
1261         available = (uint64_t) svfs.f_bfree * (uint64_t) svfs.f_bsize;
1262
1263         if (available < RELOAD_DISK_SPACE_MIN) {
1264                 char fb_available[FORMAT_BYTES_MAX], fb_need[FORMAT_BYTES_MAX];
1265                 return sd_bus_error_setf(error,
1266                                          BUS_ERROR_DISK_FULL,
1267                                          "%s, not enough space available on /run/systemd. "
1268                                          "Currently, %s are free, but a safety buffer of %s is enforced.",
1269                                          message,
1270                                          format_bytes(fb_available, sizeof(fb_available), available),
1271                                          format_bytes(fb_need, sizeof(fb_need), RELOAD_DISK_SPACE_MIN));
1272         }
1273
1274         return 0;
1275 }
1276
1277 int verify_run_space_and_log(const char *message) {
1278         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1279         int r;
1280
1281         r = verify_run_space(message, &error);
1282         if (r < 0)
1283                 log_error_errno(r, "%s", bus_error_message(&error, r));
1284
1285         return r;
1286 }
1287
1288 static int method_reload(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1289         Manager *m = userdata;
1290         int r;
1291
1292         assert(message);
1293         assert(m);
1294
1295         r = verify_run_space("Refusing to reload", error);
1296         if (r < 0)
1297                 return r;
1298
1299         r = mac_selinux_access_check(message, "reload", error);
1300         if (r < 0)
1301                 return r;
1302
1303         r = bus_verify_reload_daemon_async(m, message, error);
1304         if (r < 0)
1305                 return r;
1306         if (r == 0)
1307                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1308
1309         /* Instead of sending the reply back right away, we just
1310          * remember that we need to and then send it after the reload
1311          * is finished. That way the caller knows when the reload
1312          * finished. */
1313
1314         assert(!m->queued_message);
1315         r = sd_bus_message_new_method_return(message, &m->queued_message);
1316         if (r < 0)
1317                 return r;
1318
1319         m->exit_code = MANAGER_RELOAD;
1320
1321         return 1;
1322 }
1323
1324 static int method_reexecute(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1325         Manager *m = userdata;
1326         int r;
1327
1328         assert(message);
1329         assert(m);
1330
1331         r = verify_run_space("Refusing to reexecute", error);
1332         if (r < 0)
1333                 return r;
1334
1335         r = mac_selinux_access_check(message, "reload", error);
1336         if (r < 0)
1337                 return r;
1338
1339         r = bus_verify_reload_daemon_async(m, message, error);
1340         if (r < 0)
1341                 return r;
1342         if (r == 0)
1343                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1344
1345         /* We don't send a reply back here, the client should
1346          * just wait for us disconnecting. */
1347
1348         m->exit_code = MANAGER_REEXECUTE;
1349         return 1;
1350 }
1351
1352 static int method_exit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1353         Manager *m = userdata;
1354         int r;
1355
1356         assert(message);
1357         assert(m);
1358
1359         r = mac_selinux_access_check(message, "halt", error);
1360         if (r < 0)
1361                 return r;
1362
1363         /* Exit() (in contrast to SetExitCode()) is actually allowed even if
1364          * we are running on the host. It will fall back on reboot() in
1365          * systemd-shutdown if it cannot do the exit() because it isn't a
1366          * container. */
1367
1368         m->exit_code = MANAGER_EXIT;
1369
1370         return sd_bus_reply_method_return(message, NULL);
1371 }
1372
1373 static int method_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1374         Manager *m = userdata;
1375         int r;
1376
1377         assert(message);
1378         assert(m);
1379
1380         r = mac_selinux_access_check(message, "reboot", error);
1381         if (r < 0)
1382                 return r;
1383
1384         if (!MANAGER_IS_SYSTEM(m))
1385                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Reboot is only supported for system managers.");
1386
1387         m->exit_code = MANAGER_REBOOT;
1388
1389         return sd_bus_reply_method_return(message, NULL);
1390 }
1391
1392 static int method_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1393         Manager *m = userdata;
1394         int r;
1395
1396         assert(message);
1397         assert(m);
1398
1399         r = mac_selinux_access_check(message, "halt", error);
1400         if (r < 0)
1401                 return r;
1402
1403         if (!MANAGER_IS_SYSTEM(m))
1404                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Powering off is only supported for system managers.");
1405
1406         m->exit_code = MANAGER_POWEROFF;
1407
1408         return sd_bus_reply_method_return(message, NULL);
1409 }
1410
1411 static int method_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1412         Manager *m = userdata;
1413         int r;
1414
1415         assert(message);
1416         assert(m);
1417
1418         r = mac_selinux_access_check(message, "halt", error);
1419         if (r < 0)
1420                 return r;
1421
1422         if (!MANAGER_IS_SYSTEM(m))
1423                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Halt is only supported for system managers.");
1424
1425         m->exit_code = MANAGER_HALT;
1426
1427         return sd_bus_reply_method_return(message, NULL);
1428 }
1429
1430 static int method_kexec(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1431         Manager *m = userdata;
1432         int r;
1433
1434         assert(message);
1435         assert(m);
1436
1437         r = mac_selinux_access_check(message, "reboot", error);
1438         if (r < 0)
1439                 return r;
1440
1441         if (!MANAGER_IS_SYSTEM(m))
1442                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "KExec is only supported for system managers.");
1443
1444         m->exit_code = MANAGER_KEXEC;
1445
1446         return sd_bus_reply_method_return(message, NULL);
1447 }
1448
1449 static int method_switch_root(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1450         char *ri = NULL, *rt = NULL;
1451         const char *root, *init;
1452         Manager *m = userdata;
1453         struct statvfs svfs;
1454         uint64_t available;
1455         int r;
1456
1457         assert(message);
1458         assert(m);
1459
1460         if (statvfs("/run/systemd", &svfs) < 0)
1461                 return sd_bus_error_set_errnof(error, errno, "Failed to statvfs(/run/systemd): %m");
1462
1463         available = (uint64_t) svfs.f_bfree * (uint64_t) svfs.f_bsize;
1464
1465         if (available < RELOAD_DISK_SPACE_MIN) {
1466                 char fb_available[FORMAT_BYTES_MAX], fb_need[FORMAT_BYTES_MAX];
1467                 log_warning("Dangerously low amount of free space on /run/systemd, root switching operation might not complete successfuly. "
1468                             "Currently, %s are free, but %s are suggested. Proceeding anyway.",
1469                             format_bytes(fb_available, sizeof(fb_available), available),
1470                             format_bytes(fb_need, sizeof(fb_need), RELOAD_DISK_SPACE_MIN));
1471         }
1472
1473         r = mac_selinux_access_check(message, "reboot", error);
1474         if (r < 0)
1475                 return r;
1476
1477         if (!MANAGER_IS_SYSTEM(m))
1478                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Root switching is only supported by system manager.");
1479
1480         r = sd_bus_message_read(message, "ss", &root, &init);
1481         if (r < 0)
1482                 return r;
1483
1484         if (isempty(root))
1485                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "New root directory may not be the empty string.");
1486         if (!path_is_absolute(root))
1487                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "New root path '%s' is not absolute.", root);
1488         if (path_equal(root, "/"))
1489                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "New root directory cannot be the old root directory.");
1490
1491         /* Safety check */
1492         if (isempty(init)) {
1493                 r = path_is_os_tree(root);
1494                 if (r < 0)
1495                         return sd_bus_error_set_errnof(error, r, "Failed to determine whether root path '%s' contains an OS tree: %m", root);
1496                 if (r == 0)
1497                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Specified switch root path '%s' does not seem to be an OS tree. os-release file is missing.", root);
1498         } else {
1499                 _cleanup_free_ char *chased = NULL;
1500
1501                 if (!path_is_absolute(init))
1502                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path to init binary '%s' not absolute.", init);
1503
1504                 r = chase_symlinks(init, root, CHASE_PREFIX_ROOT|CHASE_TRAIL_SLASH, &chased);
1505                 if (r < 0)
1506                         return sd_bus_error_set_errnof(error, r, "Could not resolve init executable %s: %m", init);
1507
1508                 if (laccess(chased, X_OK) < 0) {
1509                         if (errno == EACCES)
1510                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Init binary %s is not executable.", init);
1511
1512                         return sd_bus_error_set_errnof(error, r, "Could not check whether init binary %s is executable: %m", init);
1513                 }
1514         }
1515
1516         rt = strdup(root);
1517         if (!rt)
1518                 return -ENOMEM;
1519
1520         if (!isempty(init)) {
1521                 ri = strdup(init);
1522                 if (!ri) {
1523                         free(rt);
1524                         return -ENOMEM;
1525                 }
1526         }
1527
1528         free(m->switch_root);
1529         m->switch_root = rt;
1530
1531         free(m->switch_root_init);
1532         m->switch_root_init = ri;
1533
1534         m->exit_code = MANAGER_SWITCH_ROOT;
1535
1536         return sd_bus_reply_method_return(message, NULL);
1537 }
1538
1539 static int method_set_environment(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1540         _cleanup_strv_free_ char **plus = NULL;
1541         Manager *m = userdata;
1542         int r;
1543
1544         assert(message);
1545         assert(m);
1546
1547         r = mac_selinux_access_check(message, "reload", error);
1548         if (r < 0)
1549                 return r;
1550
1551         r = sd_bus_message_read_strv(message, &plus);
1552         if (r < 0)
1553                 return r;
1554         if (!strv_env_is_valid(plus))
1555                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment assignments");
1556
1557         r = bus_verify_set_environment_async(m, message, error);
1558         if (r < 0)
1559                 return r;
1560         if (r == 0)
1561                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1562
1563         r = manager_environment_add(m, NULL, plus);
1564         if (r < 0)
1565                 return r;
1566
1567         return sd_bus_reply_method_return(message, NULL);
1568 }
1569
1570 static int method_unset_environment(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1571         _cleanup_strv_free_ char **minus = NULL;
1572         Manager *m = userdata;
1573         int r;
1574
1575         assert(message);
1576         assert(m);
1577
1578         r = mac_selinux_access_check(message, "reload", error);
1579         if (r < 0)
1580                 return r;
1581
1582         r = sd_bus_message_read_strv(message, &minus);
1583         if (r < 0)
1584                 return r;
1585
1586         if (!strv_env_name_or_assignment_is_valid(minus))
1587                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment variable names or assignments");
1588
1589         r = bus_verify_set_environment_async(m, message, error);
1590         if (r < 0)
1591                 return r;
1592         if (r == 0)
1593                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1594
1595         r = manager_environment_add(m, minus, NULL);
1596         if (r < 0)
1597                 return r;
1598
1599         return sd_bus_reply_method_return(message, NULL);
1600 }
1601
1602 static int method_unset_and_set_environment(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1603         _cleanup_strv_free_ char **minus = NULL, **plus = NULL;
1604         Manager *m = userdata;
1605         int r;
1606
1607         assert(message);
1608         assert(m);
1609
1610         r = mac_selinux_access_check(message, "reload", error);
1611         if (r < 0)
1612                 return r;
1613
1614         r = sd_bus_message_read_strv(message, &minus);
1615         if (r < 0)
1616                 return r;
1617
1618         r = sd_bus_message_read_strv(message, &plus);
1619         if (r < 0)
1620                 return r;
1621
1622         if (!strv_env_name_or_assignment_is_valid(minus))
1623                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment variable names or assignments");
1624         if (!strv_env_is_valid(plus))
1625                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment assignments");
1626
1627         r = bus_verify_set_environment_async(m, message, error);
1628         if (r < 0)
1629                 return r;
1630         if (r == 0)
1631                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1632
1633         r = manager_environment_add(m, minus, plus);
1634         if (r < 0)
1635                 return r;
1636
1637         return sd_bus_reply_method_return(message, NULL);
1638 }
1639
1640 static int method_set_exit_code(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1641         Manager *m = userdata;
1642         uint8_t code;
1643         int r;
1644
1645         assert(message);
1646         assert(m);
1647
1648         r = mac_selinux_access_check(message, "exit", error);
1649         if (r < 0)
1650                 return r;
1651
1652         r = sd_bus_message_read_basic(message, 'y', &code);
1653         if (r < 0)
1654                 return r;
1655
1656         if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0)
1657                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "ExitCode can only be set for user service managers or in containers.");
1658
1659         m->return_value = code;
1660
1661         return sd_bus_reply_method_return(message, NULL);
1662 }
1663
1664 static int method_lookup_dynamic_user_by_name(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1665         Manager *m = userdata;
1666         const char *name;
1667         uid_t uid;
1668         int r;
1669
1670         assert(message);
1671         assert(m);
1672
1673         r = sd_bus_message_read_basic(message, 's', &name);
1674         if (r < 0)
1675                 return r;
1676
1677         if (!MANAGER_IS_SYSTEM(m))
1678                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Dynamic users are only supported in the system instance.");
1679         if (!valid_user_group_name(name))
1680                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "User name invalid: %s", name);
1681
1682         r = dynamic_user_lookup_name(m, name, &uid);
1683         if (r == -ESRCH)
1684                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_DYNAMIC_USER, "Dynamic user %s does not exist.", name);
1685         if (r < 0)
1686                 return r;
1687
1688         return sd_bus_reply_method_return(message, "u", (uint32_t) uid);
1689 }
1690
1691 static int method_lookup_dynamic_user_by_uid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1692         _cleanup_free_ char *name = NULL;
1693         Manager *m = userdata;
1694         uid_t uid;
1695         int r;
1696
1697         assert(message);
1698         assert(m);
1699
1700         assert_cc(sizeof(uid) == sizeof(uint32_t));
1701         r = sd_bus_message_read_basic(message, 'u', &uid);
1702         if (r < 0)
1703                 return r;
1704
1705         if (!MANAGER_IS_SYSTEM(m))
1706                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Dynamic users are only supported in the system instance.");
1707         if (!uid_is_valid(uid))
1708                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "User ID invalid: " UID_FMT, uid);
1709
1710         r = dynamic_user_lookup_uid(m, uid, &name);
1711         if (r == -ESRCH)
1712                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_DYNAMIC_USER, "Dynamic user ID " UID_FMT " does not exist.", uid);
1713         if (r < 0)
1714                 return r;
1715
1716         return sd_bus_reply_method_return(message, "s", name);
1717 }
1718
1719 static int method_get_dynamic_users(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1720         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1721         Manager *m = userdata;
1722         DynamicUser *d;
1723         Iterator i;
1724         int r;
1725
1726         assert(message);
1727         assert(m);
1728
1729         assert_cc(sizeof(uid_t) == sizeof(uint32_t));
1730
1731         if (!MANAGER_IS_SYSTEM(m))
1732                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Dynamic users are only supported in the system instance.");
1733
1734         r = sd_bus_message_new_method_return(message, &reply);
1735         if (r < 0)
1736                 return r;
1737
1738         r = sd_bus_message_open_container(reply, 'a', "(us)");
1739         if (r < 0)
1740                 return r;
1741
1742         HASHMAP_FOREACH(d, m->dynamic_users, i) {
1743                 uid_t uid;
1744
1745                 r = dynamic_user_current(d, &uid);
1746                 if (r == -EAGAIN) /* not realized yet? */
1747                         continue;
1748                 if (r < 0)
1749                         return sd_bus_error_setf(error, SD_BUS_ERROR_FAILED, "Failed to lookup a dynamic user.");
1750
1751                 r = sd_bus_message_append(reply, "(us)", uid, d->name);
1752                 if (r < 0)
1753                         return r;
1754         }
1755
1756         r = sd_bus_message_close_container(reply);
1757         if (r < 0)
1758                 return r;
1759
1760         return sd_bus_send(NULL, reply, NULL);
1761 }
1762
1763 static int list_unit_files_by_patterns(sd_bus_message *message, void *userdata, sd_bus_error *error, char **states, char **patterns) {
1764         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1765         Manager *m = userdata;
1766         UnitFileList *item;
1767         Hashmap *h;
1768         Iterator i;
1769         int r;
1770
1771         assert(message);
1772         assert(m);
1773
1774         /* Anyone can call this method */
1775
1776         r = mac_selinux_access_check(message, "status", error);
1777         if (r < 0)
1778                 return r;
1779
1780         r = sd_bus_message_new_method_return(message, &reply);
1781         if (r < 0)
1782                 return r;
1783
1784         h = hashmap_new(&string_hash_ops);
1785         if (!h)
1786                 return -ENOMEM;
1787
1788         r = unit_file_get_list(m->unit_file_scope, NULL, h, states, patterns);
1789         if (r < 0)
1790                 goto fail;
1791
1792         r = sd_bus_message_open_container(reply, 'a', "(ss)");
1793         if (r < 0)
1794                 goto fail;
1795
1796         HASHMAP_FOREACH(item, h, i) {
1797
1798                 r = sd_bus_message_append(reply, "(ss)", item->path, unit_file_state_to_string(item->state));
1799                 if (r < 0)
1800                         goto fail;
1801         }
1802
1803         unit_file_list_free(h);
1804
1805         r = sd_bus_message_close_container(reply);
1806         if (r < 0)
1807                 return r;
1808
1809         return sd_bus_send(NULL, reply, NULL);
1810
1811 fail:
1812         unit_file_list_free(h);
1813         return r;
1814 }
1815
1816 static int method_list_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1817         return list_unit_files_by_patterns(message, userdata, error, NULL, NULL);
1818 }
1819
1820 static int method_list_unit_files_by_patterns(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1821         _cleanup_strv_free_ char **states = NULL;
1822         _cleanup_strv_free_ char **patterns = NULL;
1823         int r;
1824
1825         r = sd_bus_message_read_strv(message, &states);
1826         if (r < 0)
1827                 return r;
1828
1829         r = sd_bus_message_read_strv(message, &patterns);
1830         if (r < 0)
1831                 return r;
1832
1833         return list_unit_files_by_patterns(message, userdata, error, states, patterns);
1834 }
1835
1836 static int method_get_unit_file_state(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1837         Manager *m = userdata;
1838         const char *name;
1839         UnitFileState state;
1840         int r;
1841
1842         assert(message);
1843         assert(m);
1844
1845         /* Anyone can call this method */
1846
1847         r = mac_selinux_access_check(message, "status", error);
1848         if (r < 0)
1849                 return r;
1850
1851         r = sd_bus_message_read(message, "s", &name);
1852         if (r < 0)
1853                 return r;
1854
1855         r = unit_file_get_state(m->unit_file_scope, NULL, name, &state);
1856         if (r < 0)
1857                 return r;
1858
1859         return sd_bus_reply_method_return(message, "s", unit_file_state_to_string(state));
1860 }
1861
1862 static int method_get_default_target(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1863         _cleanup_free_ char *default_target = NULL;
1864         Manager *m = userdata;
1865         int r;
1866
1867         assert(message);
1868         assert(m);
1869
1870         /* Anyone can call this method */
1871
1872         r = mac_selinux_access_check(message, "status", error);
1873         if (r < 0)
1874                 return r;
1875
1876         r = unit_file_get_default(m->unit_file_scope, NULL, &default_target);
1877         if (r < 0)
1878                 return r;
1879
1880         return sd_bus_reply_method_return(message, "s", default_target);
1881 }
1882
1883 static int send_unit_files_changed(sd_bus *bus, void *userdata) {
1884         _cleanup_(sd_bus_message_unrefp) sd_bus_message *message = NULL;
1885         int r;
1886
1887         assert(bus);
1888
1889         r = sd_bus_message_new_signal(bus, &message, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "UnitFilesChanged");
1890         if (r < 0)
1891                 return r;
1892
1893         return sd_bus_send(bus, message, NULL);
1894 }
1895
1896 /* Create an error reply, using the error information from changes[]
1897  * if possible, and fall back to generating an error from error code c.
1898  * The error message only describes the first error.
1899  *
1900  * Coordinate with unit_file_dump_changes() in install.c.
1901  */
1902 static int install_error(
1903                 sd_bus_error *error,
1904                 int c,
1905                 UnitFileChange *changes,
1906                 size_t n_changes) {
1907
1908         size_t i;
1909         int r;
1910
1911         for (i = 0; i < n_changes; i++)
1912
1913                 switch(changes[i].type) {
1914
1915                 case 0 ... INT_MAX:
1916                         continue;
1917
1918                 case -EEXIST:
1919                         if (changes[i].source)
1920                                 r = sd_bus_error_setf(error, BUS_ERROR_UNIT_EXISTS,
1921                                                       "File %s already exists and is a symlink to %s.",
1922                                                       changes[i].path, changes[i].source);
1923                         else
1924                                 r = sd_bus_error_setf(error, BUS_ERROR_UNIT_EXISTS,
1925                                                       "File %s already exists.",
1926                                                       changes[i].path);
1927                         goto found;
1928
1929                 case -ERFKILL:
1930                         r = sd_bus_error_setf(error, BUS_ERROR_UNIT_MASKED,
1931                                               "Unit file %s is masked.", changes[i].path);
1932                         goto found;
1933
1934                 case -EADDRNOTAVAIL:
1935                         r = sd_bus_error_setf(error, BUS_ERROR_UNIT_GENERATED,
1936                                               "Unit %s is transient or generated.", changes[i].path);
1937                         goto found;
1938
1939                 case -ELOOP:
1940                         r = sd_bus_error_setf(error, BUS_ERROR_UNIT_LINKED,
1941                                               "Refusing to operate on linked unit file %s", changes[i].path);
1942                         goto found;
1943
1944                 case -ENOENT:
1945                         r = sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit file %s does not exist.", changes[i].path);
1946                         goto found;
1947
1948                 default:
1949                         r = sd_bus_error_set_errnof(error, changes[i].type, "File %s: %m", changes[i].path);
1950                         goto found;
1951                 }
1952
1953         r = c < 0 ? c : -EINVAL;
1954
1955  found:
1956         unit_file_changes_free(changes, n_changes);
1957         return r;
1958 }
1959
1960 static int reply_unit_file_changes_and_free(
1961                 Manager *m,
1962                 sd_bus_message *message,
1963                 int carries_install_info,
1964                 UnitFileChange *changes,
1965                 size_t n_changes,
1966                 sd_bus_error *error) {
1967
1968         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1969         bool bad = false, good = false;
1970         size_t i;
1971         int r;
1972
1973         if (unit_file_changes_have_modification(changes, n_changes)) {
1974                 r = bus_foreach_bus(m, NULL, send_unit_files_changed, NULL);
1975                 if (r < 0)
1976                         log_debug_errno(r, "Failed to send UnitFilesChanged signal: %m");
1977         }
1978
1979         r = sd_bus_message_new_method_return(message, &reply);
1980         if (r < 0)
1981                 goto fail;
1982
1983         if (carries_install_info >= 0) {
1984                 r = sd_bus_message_append(reply, "b", carries_install_info);
1985                 if (r < 0)
1986                         goto fail;
1987         }
1988
1989         r = sd_bus_message_open_container(reply, 'a', "(sss)");
1990         if (r < 0)
1991                 goto fail;
1992
1993         for (i = 0; i < n_changes; i++) {
1994
1995                 if (changes[i].type < 0) {
1996                         bad = true;
1997                         continue;
1998                 }
1999
2000                 r = sd_bus_message_append(
2001                                 reply, "(sss)",
2002                                 unit_file_change_type_to_string(changes[i].type),
2003                                 changes[i].path,
2004                                 changes[i].source);
2005                 if (r < 0)
2006                         goto fail;
2007
2008                 good = true;
2009         }
2010
2011         /* If there was a failed change, and no successful change, then return the first failure as proper method call
2012          * error. */
2013         if (bad && !good)
2014                 return install_error(error, 0, changes, n_changes);
2015
2016         r = sd_bus_message_close_container(reply);
2017         if (r < 0)
2018                 goto fail;
2019
2020         unit_file_changes_free(changes, n_changes);
2021         return sd_bus_send(NULL, reply, NULL);
2022
2023 fail:
2024         unit_file_changes_free(changes, n_changes);
2025         return r;
2026 }
2027
2028 static int method_enable_unit_files_generic(
2029                 sd_bus_message *message,
2030                 Manager *m,
2031                 int (*call)(UnitFileScope scope, UnitFileFlags flags, const char *root_dir, char *files[], UnitFileChange **changes, size_t *n_changes),
2032                 bool carries_install_info,
2033                 sd_bus_error *error) {
2034
2035         _cleanup_strv_free_ char **l = NULL;
2036         UnitFileChange *changes = NULL;
2037         size_t n_changes = 0;
2038         UnitFileFlags flags;
2039         int runtime, force, r;
2040
2041         assert(message);
2042         assert(m);
2043
2044         r = sd_bus_message_read_strv(message, &l);
2045         if (r < 0)
2046                 return r;
2047
2048         r = sd_bus_message_read(message, "bb", &runtime, &force);
2049         if (r < 0)
2050                 return r;
2051
2052         flags = unit_file_bools_to_flags(runtime, force);
2053
2054         r = bus_verify_manage_unit_files_async(m, message, error);
2055         if (r < 0)
2056                 return r;
2057         if (r == 0)
2058                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2059
2060         r = call(m->unit_file_scope, flags, NULL, l, &changes, &n_changes);
2061         if (r < 0)
2062                 return install_error(error, r, changes, n_changes);
2063
2064         return reply_unit_file_changes_and_free(m, message, carries_install_info ? r : -1, changes, n_changes, error);
2065 }
2066
2067 static int method_enable_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2068         return method_enable_unit_files_generic(message, userdata, unit_file_enable, true, error);
2069 }
2070
2071 static int method_reenable_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2072         return method_enable_unit_files_generic(message, userdata, unit_file_reenable, true, error);
2073 }
2074
2075 static int method_link_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2076         return method_enable_unit_files_generic(message, userdata, unit_file_link, false, error);
2077 }
2078
2079 static int unit_file_preset_without_mode(UnitFileScope scope, UnitFileFlags flags, const char *root_dir, char **files, UnitFileChange **changes, size_t *n_changes) {
2080         return unit_file_preset(scope, flags, root_dir, files, UNIT_FILE_PRESET_FULL, changes, n_changes);
2081 }
2082
2083 static int method_preset_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2084         return method_enable_unit_files_generic(message, userdata, unit_file_preset_without_mode, true, error);
2085 }
2086
2087 static int method_mask_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2088         return method_enable_unit_files_generic(message, userdata, unit_file_mask, false, error);
2089 }
2090
2091 static int method_preset_unit_files_with_mode(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2092
2093         _cleanup_strv_free_ char **l = NULL;
2094         UnitFileChange *changes = NULL;
2095         size_t n_changes = 0;
2096         Manager *m = userdata;
2097         UnitFilePresetMode mm;
2098         int runtime, force, r;
2099         UnitFileFlags flags;
2100         const char *mode;
2101
2102         assert(message);
2103         assert(m);
2104
2105         r = sd_bus_message_read_strv(message, &l);
2106         if (r < 0)
2107                 return r;
2108
2109         r = sd_bus_message_read(message, "sbb", &mode, &runtime, &force);
2110         if (r < 0)
2111                 return r;
2112
2113         flags = unit_file_bools_to_flags(runtime, force);
2114
2115         if (isempty(mode))
2116                 mm = UNIT_FILE_PRESET_FULL;
2117         else {
2118                 mm = unit_file_preset_mode_from_string(mode);
2119                 if (mm < 0)
2120                         return -EINVAL;
2121         }
2122
2123         r = bus_verify_manage_unit_files_async(m, message, error);
2124         if (r < 0)
2125                 return r;
2126         if (r == 0)
2127                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2128
2129         r = unit_file_preset(m->unit_file_scope, flags, NULL, l, mm, &changes, &n_changes);
2130         if (r < 0)
2131                 return install_error(error, r, changes, n_changes);
2132
2133         return reply_unit_file_changes_and_free(m, message, r, changes, n_changes, error);
2134 }
2135
2136 static int method_disable_unit_files_generic(
2137                 sd_bus_message *message,
2138                 Manager *m,
2139                 int (*call)(UnitFileScope scope, UnitFileFlags flags, const char *root_dir, char *files[], UnitFileChange **changes, size_t *n_changes),
2140                 sd_bus_error *error) {
2141
2142         _cleanup_strv_free_ char **l = NULL;
2143         UnitFileChange *changes = NULL;
2144         size_t n_changes = 0;
2145         int r, runtime;
2146
2147         assert(message);
2148         assert(m);
2149
2150         r = sd_bus_message_read_strv(message, &l);
2151         if (r < 0)
2152                 return r;
2153
2154         r = sd_bus_message_read(message, "b", &runtime);
2155         if (r < 0)
2156                 return r;
2157
2158         r = bus_verify_manage_unit_files_async(m, message, error);
2159         if (r < 0)
2160                 return r;
2161         if (r == 0)
2162                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2163
2164         r = call(m->unit_file_scope, runtime ? UNIT_FILE_RUNTIME : 0, NULL, l, &changes, &n_changes);
2165         if (r < 0)
2166                 return install_error(error, r, changes, n_changes);
2167
2168         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2169 }
2170
2171 static int method_disable_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2172         return method_disable_unit_files_generic(message, userdata, unit_file_disable, error);
2173 }
2174
2175 static int method_unmask_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2176         return method_disable_unit_files_generic(message, userdata, unit_file_unmask, error);
2177 }
2178
2179 static int method_revert_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2180         _cleanup_strv_free_ char **l = NULL;
2181         UnitFileChange *changes = NULL;
2182         size_t n_changes = 0;
2183         Manager *m = userdata;
2184         int r;
2185
2186         assert(message);
2187         assert(m);
2188
2189         r = sd_bus_message_read_strv(message, &l);
2190         if (r < 0)
2191                 return r;
2192
2193         r = bus_verify_manage_unit_files_async(m, message, error);
2194         if (r < 0)
2195                 return r;
2196         if (r == 0)
2197                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2198
2199         r = unit_file_revert(m->unit_file_scope, NULL, l, &changes, &n_changes);
2200         if (r < 0)
2201                 return install_error(error, r, changes, n_changes);
2202
2203         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2204 }
2205
2206 static int method_set_default_target(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2207         UnitFileChange *changes = NULL;
2208         size_t n_changes = 0;
2209         Manager *m = userdata;
2210         const char *name;
2211         int force, r;
2212
2213         assert(message);
2214         assert(m);
2215
2216         r = mac_selinux_access_check(message, "enable", error);
2217         if (r < 0)
2218                 return r;
2219
2220         r = sd_bus_message_read(message, "sb", &name, &force);
2221         if (r < 0)
2222                 return r;
2223
2224         r = bus_verify_manage_unit_files_async(m, message, error);
2225         if (r < 0)
2226                 return r;
2227         if (r == 0)
2228                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2229
2230         r = unit_file_set_default(m->unit_file_scope, force ? UNIT_FILE_FORCE : 0, NULL, name, &changes, &n_changes);
2231         if (r < 0)
2232                 return install_error(error, r, changes, n_changes);
2233
2234         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2235 }
2236
2237 static int method_preset_all_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2238         UnitFileChange *changes = NULL;
2239         size_t n_changes = 0;
2240         Manager *m = userdata;
2241         UnitFilePresetMode mm;
2242         const char *mode;
2243         UnitFileFlags flags;
2244         int force, runtime, r;
2245
2246         assert(message);
2247         assert(m);
2248
2249         r = mac_selinux_access_check(message, "enable", error);
2250         if (r < 0)
2251                 return r;
2252
2253         r = sd_bus_message_read(message, "sbb", &mode, &runtime, &force);
2254         if (r < 0)
2255                 return r;
2256
2257         flags = unit_file_bools_to_flags(runtime, force);
2258
2259         if (isempty(mode))
2260                 mm = UNIT_FILE_PRESET_FULL;
2261         else {
2262                 mm = unit_file_preset_mode_from_string(mode);
2263                 if (mm < 0)
2264                         return -EINVAL;
2265         }
2266
2267         r = bus_verify_manage_unit_files_async(m, message, error);
2268         if (r < 0)
2269                 return r;
2270         if (r == 0)
2271                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2272
2273         r = unit_file_preset_all(m->unit_file_scope, flags, NULL, mm, &changes, &n_changes);
2274         if (r < 0)
2275                 return install_error(error, r, changes, n_changes);
2276
2277         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2278 }
2279
2280 static int method_add_dependency_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2281         _cleanup_strv_free_ char **l = NULL;
2282         Manager *m = userdata;
2283         UnitFileChange *changes = NULL;
2284         size_t n_changes = 0;
2285         int runtime, force, r;
2286         char *target, *type;
2287         UnitDependency dep;
2288         UnitFileFlags flags;
2289
2290         assert(message);
2291         assert(m);
2292
2293         r = bus_verify_manage_unit_files_async(m, message, error);
2294         if (r < 0)
2295                 return r;
2296         if (r == 0)
2297                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2298
2299         r = sd_bus_message_read_strv(message, &l);
2300         if (r < 0)
2301                 return r;
2302
2303         r = sd_bus_message_read(message, "ssbb", &target, &type, &runtime, &force);
2304         if (r < 0)
2305                 return r;
2306
2307         flags = unit_file_bools_to_flags(runtime, force);
2308
2309         dep = unit_dependency_from_string(type);
2310         if (dep < 0)
2311                 return -EINVAL;
2312
2313         r = unit_file_add_dependency(m->unit_file_scope, flags, NULL, l, target, dep, &changes, &n_changes);
2314         if (r < 0)
2315                 return install_error(error, r, changes, n_changes);
2316
2317         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2318 }
2319
2320 static int method_get_unit_file_links(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2321         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
2322         UnitFileChange *changes = NULL;
2323         size_t n_changes = 0, i;
2324         UnitFileFlags flags;
2325         const char *name;
2326         char **p;
2327         int runtime, r;
2328
2329         r = sd_bus_message_read(message, "sb", &name, &runtime);
2330         if (r < 0)
2331                 return r;
2332
2333         r = sd_bus_message_new_method_return(message, &reply);
2334         if (r < 0)
2335                 return r;
2336
2337         r = sd_bus_message_open_container(reply, SD_BUS_TYPE_ARRAY, "s");
2338         if (r < 0)
2339                 return r;
2340
2341         p = STRV_MAKE(name);
2342         flags = UNIT_FILE_DRY_RUN |
2343                 (runtime ? UNIT_FILE_RUNTIME : 0);
2344
2345         r = unit_file_disable(UNIT_FILE_SYSTEM, flags, NULL, p, &changes, &n_changes);
2346         if (r < 0)
2347                 return log_error_errno(r, "Failed to get file links for %s: %m", name);
2348
2349         for (i = 0; i < n_changes; i++)
2350                 if (changes[i].type == UNIT_FILE_UNLINK) {
2351                         r = sd_bus_message_append(reply, "s", changes[i].path);
2352                         if (r < 0)
2353                                 return r;
2354                 }
2355
2356         r = sd_bus_message_close_container(reply);
2357         if (r < 0)
2358                 return r;
2359
2360         return sd_bus_send(NULL, reply, NULL);
2361 }
2362
2363 static int method_get_job_waiting(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2364         Manager *m = userdata;
2365         uint32_t id;
2366         Job *j;
2367         int r;
2368
2369         assert(message);
2370         assert(m);
2371
2372         r = sd_bus_message_read(message, "u", &id);
2373         if (r < 0)
2374                 return r;
2375
2376         j = manager_get_job(m, id);
2377         if (!j)
2378                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
2379
2380         return bus_job_method_get_waiting_jobs(message, j, error);
2381 }
2382
2383 const sd_bus_vtable bus_manager_vtable[] = {
2384         SD_BUS_VTABLE_START(0),
2385
2386         SD_BUS_PROPERTY("Version", "s", property_get_version, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2387         SD_BUS_PROPERTY("Features", "s", property_get_features, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2388         SD_BUS_PROPERTY("Virtualization", "s", property_get_virtualization, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2389         SD_BUS_PROPERTY("Architecture", "s", property_get_architecture, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2390         SD_BUS_PROPERTY("Tainted", "s", property_get_tainted, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2391         BUS_PROPERTY_DUAL_TIMESTAMP("FirmwareTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_FIRMWARE]), SD_BUS_VTABLE_PROPERTY_CONST),
2392         BUS_PROPERTY_DUAL_TIMESTAMP("LoaderTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_LOADER]), SD_BUS_VTABLE_PROPERTY_CONST),
2393         BUS_PROPERTY_DUAL_TIMESTAMP("KernelTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_KERNEL]), SD_BUS_VTABLE_PROPERTY_CONST),
2394         BUS_PROPERTY_DUAL_TIMESTAMP("InitRDTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_INITRD]), SD_BUS_VTABLE_PROPERTY_CONST),
2395         BUS_PROPERTY_DUAL_TIMESTAMP("UserspaceTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_USERSPACE]), SD_BUS_VTABLE_PROPERTY_CONST),
2396         BUS_PROPERTY_DUAL_TIMESTAMP("FinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2397         BUS_PROPERTY_DUAL_TIMESTAMP("SecurityStartTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_SECURITY_START]), SD_BUS_VTABLE_PROPERTY_CONST),
2398         BUS_PROPERTY_DUAL_TIMESTAMP("SecurityFinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_SECURITY_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2399         BUS_PROPERTY_DUAL_TIMESTAMP("GeneratorsStartTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_GENERATORS_START]), SD_BUS_VTABLE_PROPERTY_CONST),
2400         BUS_PROPERTY_DUAL_TIMESTAMP("GeneratorsFinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_GENERATORS_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2401         BUS_PROPERTY_DUAL_TIMESTAMP("UnitsLoadStartTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_UNITS_LOAD_START]), SD_BUS_VTABLE_PROPERTY_CONST),
2402         BUS_PROPERTY_DUAL_TIMESTAMP("UnitsLoadFinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_UNITS_LOAD_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2403         SD_BUS_WRITABLE_PROPERTY("LogLevel", "s", property_get_log_level, property_set_log_level, 0, 0),
2404         SD_BUS_WRITABLE_PROPERTY("LogTarget", "s", property_get_log_target, property_set_log_target, 0, 0),
2405         SD_BUS_PROPERTY("NNames", "u", property_get_hashmap_size, offsetof(Manager, units), 0),
2406         SD_BUS_PROPERTY("NFailedUnits", "u", property_get_set_size, offsetof(Manager, failed_units), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
2407         SD_BUS_PROPERTY("NJobs", "u", property_get_hashmap_size, offsetof(Manager, jobs), 0),
2408         SD_BUS_PROPERTY("NInstalledJobs", "u", bus_property_get_unsigned, offsetof(Manager, n_installed_jobs), 0),
2409         SD_BUS_PROPERTY("NFailedJobs", "u", bus_property_get_unsigned, offsetof(Manager, n_failed_jobs), 0),
2410         SD_BUS_PROPERTY("Progress", "d", property_get_progress, 0, 0),
2411         SD_BUS_PROPERTY("Environment", "as", NULL, offsetof(Manager, environment), 0),
2412         SD_BUS_PROPERTY("ConfirmSpawn", "b", bus_property_get_bool, offsetof(Manager, confirm_spawn), SD_BUS_VTABLE_PROPERTY_CONST),
2413         SD_BUS_PROPERTY("ShowStatus", "b", property_get_show_status, 0, 0),
2414         SD_BUS_PROPERTY("UnitPath", "as", NULL, offsetof(Manager, lookup_paths.search_path), SD_BUS_VTABLE_PROPERTY_CONST),
2415         SD_BUS_PROPERTY("DefaultStandardOutput", "s", bus_property_get_exec_output, offsetof(Manager, default_std_output), SD_BUS_VTABLE_PROPERTY_CONST),
2416         SD_BUS_PROPERTY("DefaultStandardError", "s", bus_property_get_exec_output, offsetof(Manager, default_std_output), SD_BUS_VTABLE_PROPERTY_CONST),
2417         SD_BUS_WRITABLE_PROPERTY("RuntimeWatchdogUSec", "t", bus_property_get_usec, property_set_runtime_watchdog, offsetof(Manager, runtime_watchdog), 0),
2418         SD_BUS_WRITABLE_PROPERTY("ShutdownWatchdogUSec", "t", bus_property_get_usec, bus_property_set_usec, offsetof(Manager, shutdown_watchdog), 0),
2419         SD_BUS_WRITABLE_PROPERTY("ServiceWatchdogs", "b", bus_property_get_bool, bus_property_set_bool, offsetof(Manager, service_watchdogs), 0),
2420         SD_BUS_PROPERTY("ControlGroup", "s", NULL, offsetof(Manager, cgroup_root), 0),
2421         SD_BUS_PROPERTY("SystemState", "s", property_get_system_state, 0, 0),
2422         SD_BUS_PROPERTY("ExitCode", "y", bus_property_get_unsigned, offsetof(Manager, return_value), 0),
2423         SD_BUS_PROPERTY("DefaultTimerAccuracyUSec", "t", bus_property_get_usec, offsetof(Manager, default_timer_accuracy_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2424         SD_BUS_PROPERTY("DefaultTimeoutStartUSec", "t", bus_property_get_usec, offsetof(Manager, default_timeout_start_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2425         SD_BUS_PROPERTY("DefaultTimeoutStopUSec", "t", bus_property_get_usec, offsetof(Manager, default_timeout_stop_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2426         SD_BUS_PROPERTY("DefaultRestartUSec", "t", bus_property_get_usec, offsetof(Manager, default_restart_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2427         SD_BUS_PROPERTY("DefaultStartLimitIntervalUSec", "t", bus_property_get_usec, offsetof(Manager, default_start_limit_interval), SD_BUS_VTABLE_PROPERTY_CONST),
2428         /* The following two items are obsolete alias */
2429         SD_BUS_PROPERTY("DefaultStartLimitIntervalSec", "t", bus_property_get_usec, offsetof(Manager, default_start_limit_interval), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
2430         SD_BUS_PROPERTY("DefaultStartLimitInterval", "t", bus_property_get_usec, offsetof(Manager, default_start_limit_interval), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
2431         SD_BUS_PROPERTY("DefaultStartLimitBurst", "u", bus_property_get_unsigned, offsetof(Manager, default_start_limit_burst), SD_BUS_VTABLE_PROPERTY_CONST),
2432         SD_BUS_PROPERTY("DefaultCPUAccounting", "b", bus_property_get_bool, offsetof(Manager, default_cpu_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
2433         SD_BUS_PROPERTY("DefaultBlockIOAccounting", "b", bus_property_get_bool, offsetof(Manager, default_blockio_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
2434         SD_BUS_PROPERTY("DefaultMemoryAccounting", "b", bus_property_get_bool, offsetof(Manager, default_memory_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
2435         SD_BUS_PROPERTY("DefaultTasksAccounting", "b", bus_property_get_bool, offsetof(Manager, default_tasks_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
2436         SD_BUS_PROPERTY("DefaultLimitCPU", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CPU]), SD_BUS_VTABLE_PROPERTY_CONST),
2437         SD_BUS_PROPERTY("DefaultLimitCPUSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CPU]), SD_BUS_VTABLE_PROPERTY_CONST),
2438         SD_BUS_PROPERTY("DefaultLimitFSIZE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_FSIZE]), SD_BUS_VTABLE_PROPERTY_CONST),
2439         SD_BUS_PROPERTY("DefaultLimitFSIZESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_FSIZE]), SD_BUS_VTABLE_PROPERTY_CONST),
2440         SD_BUS_PROPERTY("DefaultLimitDATA", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_DATA]), SD_BUS_VTABLE_PROPERTY_CONST),
2441         SD_BUS_PROPERTY("DefaultLimitDATASoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_DATA]), SD_BUS_VTABLE_PROPERTY_CONST),
2442         SD_BUS_PROPERTY("DefaultLimitSTACK", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_STACK]), SD_BUS_VTABLE_PROPERTY_CONST),
2443         SD_BUS_PROPERTY("DefaultLimitSTACKSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_STACK]), SD_BUS_VTABLE_PROPERTY_CONST),
2444         SD_BUS_PROPERTY("DefaultLimitCORE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CORE]), SD_BUS_VTABLE_PROPERTY_CONST),
2445         SD_BUS_PROPERTY("DefaultLimitCORESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CORE]), SD_BUS_VTABLE_PROPERTY_CONST),
2446         SD_BUS_PROPERTY("DefaultLimitRSS", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RSS]), SD_BUS_VTABLE_PROPERTY_CONST),
2447         SD_BUS_PROPERTY("DefaultLimitRSSSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RSS]), SD_BUS_VTABLE_PROPERTY_CONST),
2448         SD_BUS_PROPERTY("DefaultLimitNOFILE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NOFILE]), SD_BUS_VTABLE_PROPERTY_CONST),
2449         SD_BUS_PROPERTY("DefaultLimitNOFILESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NOFILE]), SD_BUS_VTABLE_PROPERTY_CONST),
2450         SD_BUS_PROPERTY("DefaultLimitAS", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_AS]), SD_BUS_VTABLE_PROPERTY_CONST),
2451         SD_BUS_PROPERTY("DefaultLimitASSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_AS]), SD_BUS_VTABLE_PROPERTY_CONST),
2452         SD_BUS_PROPERTY("DefaultLimitNPROC", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NPROC]), SD_BUS_VTABLE_PROPERTY_CONST),
2453         SD_BUS_PROPERTY("DefaultLimitNPROCSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NPROC]), SD_BUS_VTABLE_PROPERTY_CONST),
2454         SD_BUS_PROPERTY("DefaultLimitMEMLOCK", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MEMLOCK]), SD_BUS_VTABLE_PROPERTY_CONST),
2455         SD_BUS_PROPERTY("DefaultLimitMEMLOCKSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MEMLOCK]), SD_BUS_VTABLE_PROPERTY_CONST),
2456         SD_BUS_PROPERTY("DefaultLimitLOCKS", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_LOCKS]), SD_BUS_VTABLE_PROPERTY_CONST),
2457         SD_BUS_PROPERTY("DefaultLimitLOCKSSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_LOCKS]), SD_BUS_VTABLE_PROPERTY_CONST),
2458         SD_BUS_PROPERTY("DefaultLimitSIGPENDING", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_SIGPENDING]), SD_BUS_VTABLE_PROPERTY_CONST),
2459         SD_BUS_PROPERTY("DefaultLimitSIGPENDINGSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_SIGPENDING]), SD_BUS_VTABLE_PROPERTY_CONST),
2460         SD_BUS_PROPERTY("DefaultLimitMSGQUEUE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MSGQUEUE]), SD_BUS_VTABLE_PROPERTY_CONST),
2461         SD_BUS_PROPERTY("DefaultLimitMSGQUEUESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MSGQUEUE]), SD_BUS_VTABLE_PROPERTY_CONST),
2462         SD_BUS_PROPERTY("DefaultLimitNICE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NICE]), SD_BUS_VTABLE_PROPERTY_CONST),
2463         SD_BUS_PROPERTY("DefaultLimitNICESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NICE]), SD_BUS_VTABLE_PROPERTY_CONST),
2464         SD_BUS_PROPERTY("DefaultLimitRTPRIO", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTPRIO]), SD_BUS_VTABLE_PROPERTY_CONST),
2465         SD_BUS_PROPERTY("DefaultLimitRTPRIOSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTPRIO]), SD_BUS_VTABLE_PROPERTY_CONST),
2466         SD_BUS_PROPERTY("DefaultLimitRTTIME", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTTIME]), SD_BUS_VTABLE_PROPERTY_CONST),
2467         SD_BUS_PROPERTY("DefaultLimitRTTIMESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTTIME]), SD_BUS_VTABLE_PROPERTY_CONST),
2468         SD_BUS_PROPERTY("DefaultTasksMax", "t", NULL, offsetof(Manager, default_tasks_max), SD_BUS_VTABLE_PROPERTY_CONST),
2469         SD_BUS_PROPERTY("TimerSlackNSec", "t", property_get_timer_slack_nsec, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2470
2471         SD_BUS_METHOD("GetUnit", "s", "o", method_get_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2472         SD_BUS_METHOD("GetUnitByPID", "u", "o", method_get_unit_by_pid, SD_BUS_VTABLE_UNPRIVILEGED),
2473         SD_BUS_METHOD("GetUnitByInvocationID", "ay", "o", method_get_unit_by_invocation_id, SD_BUS_VTABLE_UNPRIVILEGED),
2474         SD_BUS_METHOD("GetUnitByControlGroup", "s", "o", method_get_unit_by_control_group, SD_BUS_VTABLE_UNPRIVILEGED),
2475         SD_BUS_METHOD("LoadUnit", "s", "o", method_load_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2476         SD_BUS_METHOD("StartUnit", "ss", "o", method_start_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2477         SD_BUS_METHOD("StartUnitReplace", "sss", "o", method_start_unit_replace, SD_BUS_VTABLE_UNPRIVILEGED),
2478         SD_BUS_METHOD("StopUnit", "ss", "o", method_stop_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2479         SD_BUS_METHOD("ReloadUnit", "ss", "o", method_reload_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2480         SD_BUS_METHOD("RestartUnit", "ss", "o", method_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2481         SD_BUS_METHOD("TryRestartUnit", "ss", "o", method_try_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2482         SD_BUS_METHOD("ReloadOrRestartUnit", "ss", "o", method_reload_or_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2483         SD_BUS_METHOD("ReloadOrTryRestartUnit", "ss", "o", method_reload_or_try_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2484         SD_BUS_METHOD("KillUnit", "ssi", NULL, method_kill_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2485         SD_BUS_METHOD("ResetFailedUnit", "s", NULL, method_reset_failed_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2486         SD_BUS_METHOD("SetUnitProperties", "sba(sv)", NULL, method_set_unit_properties, SD_BUS_VTABLE_UNPRIVILEGED),
2487         SD_BUS_METHOD("RefUnit", "s", NULL, method_ref_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2488         SD_BUS_METHOD("UnrefUnit", "s", NULL, method_unref_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2489         SD_BUS_METHOD("StartTransientUnit", "ssa(sv)a(sa(sv))", "o", method_start_transient_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2490         SD_BUS_METHOD("GetUnitProcesses", "s", "a(sus)", method_get_unit_processes, SD_BUS_VTABLE_UNPRIVILEGED),
2491         SD_BUS_METHOD("AttachProcessesToUnit", "ssau", NULL, method_attach_processes_to_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2492         SD_BUS_METHOD("GetJob", "u", "o", method_get_job, SD_BUS_VTABLE_UNPRIVILEGED),
2493         SD_BUS_METHOD("GetJobAfter", "u", "a(usssoo)", method_get_job_waiting, SD_BUS_VTABLE_UNPRIVILEGED),
2494         SD_BUS_METHOD("GetJobBefore", "u", "a(usssoo)", method_get_job_waiting, SD_BUS_VTABLE_UNPRIVILEGED),
2495         SD_BUS_METHOD("CancelJob", "u", NULL, method_cancel_job, SD_BUS_VTABLE_UNPRIVILEGED),
2496         SD_BUS_METHOD("ClearJobs", NULL, NULL, method_clear_jobs, SD_BUS_VTABLE_UNPRIVILEGED),
2497         SD_BUS_METHOD("ResetFailed", NULL, NULL, method_reset_failed, SD_BUS_VTABLE_UNPRIVILEGED),
2498         SD_BUS_METHOD("ListUnits", NULL, "a(ssssssouso)", method_list_units, SD_BUS_VTABLE_UNPRIVILEGED),
2499         SD_BUS_METHOD("ListUnitsFiltered", "as", "a(ssssssouso)", method_list_units_filtered, SD_BUS_VTABLE_UNPRIVILEGED),
2500         SD_BUS_METHOD("ListUnitsByPatterns", "asas", "a(ssssssouso)", method_list_units_by_patterns, SD_BUS_VTABLE_UNPRIVILEGED),
2501         SD_BUS_METHOD("ListUnitsByNames", "as", "a(ssssssouso)", method_list_units_by_names, SD_BUS_VTABLE_UNPRIVILEGED),
2502         SD_BUS_METHOD("ListJobs", NULL, "a(usssoo)", method_list_jobs, SD_BUS_VTABLE_UNPRIVILEGED),
2503         SD_BUS_METHOD("Subscribe", NULL, NULL, method_subscribe, SD_BUS_VTABLE_UNPRIVILEGED),
2504         SD_BUS_METHOD("Unsubscribe", NULL, NULL, method_unsubscribe, SD_BUS_VTABLE_UNPRIVILEGED),
2505         SD_BUS_METHOD("Dump", NULL, "s", method_dump, SD_BUS_VTABLE_UNPRIVILEGED),
2506         SD_BUS_METHOD("DumpByFileDescriptor", NULL, "h", method_dump_by_fd, SD_BUS_VTABLE_UNPRIVILEGED),
2507         SD_BUS_METHOD("CreateSnapshot", "sb", "o", method_refuse_snapshot, SD_BUS_VTABLE_UNPRIVILEGED|SD_BUS_VTABLE_HIDDEN),
2508         SD_BUS_METHOD("RemoveSnapshot", "s", NULL, method_refuse_snapshot, SD_BUS_VTABLE_UNPRIVILEGED|SD_BUS_VTABLE_HIDDEN),
2509         SD_BUS_METHOD("Reload", NULL, NULL, method_reload, SD_BUS_VTABLE_UNPRIVILEGED),
2510         SD_BUS_METHOD("Reexecute", NULL, NULL, method_reexecute, SD_BUS_VTABLE_UNPRIVILEGED),
2511         SD_BUS_METHOD("Exit", NULL, NULL, method_exit, 0),
2512         SD_BUS_METHOD("Reboot", NULL, NULL, method_reboot, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2513         SD_BUS_METHOD("PowerOff", NULL, NULL, method_poweroff, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2514         SD_BUS_METHOD("Halt", NULL, NULL, method_halt, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2515         SD_BUS_METHOD("KExec", NULL, NULL, method_kexec, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2516         SD_BUS_METHOD("SwitchRoot", "ss", NULL, method_switch_root, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2517         SD_BUS_METHOD("SetEnvironment", "as", NULL, method_set_environment, SD_BUS_VTABLE_UNPRIVILEGED),
2518         SD_BUS_METHOD("UnsetEnvironment", "as", NULL, method_unset_environment, SD_BUS_VTABLE_UNPRIVILEGED),
2519         SD_BUS_METHOD("UnsetAndSetEnvironment", "asas", NULL, method_unset_and_set_environment, SD_BUS_VTABLE_UNPRIVILEGED),
2520         SD_BUS_METHOD("ListUnitFiles", NULL, "a(ss)", method_list_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2521         SD_BUS_METHOD("ListUnitFilesByPatterns", "asas", "a(ss)", method_list_unit_files_by_patterns, SD_BUS_VTABLE_UNPRIVILEGED),
2522         SD_BUS_METHOD("GetUnitFileState", "s", "s", method_get_unit_file_state, SD_BUS_VTABLE_UNPRIVILEGED),
2523         SD_BUS_METHOD("EnableUnitFiles", "asbb", "ba(sss)", method_enable_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2524         SD_BUS_METHOD("DisableUnitFiles", "asb", "a(sss)", method_disable_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2525         SD_BUS_METHOD("ReenableUnitFiles", "asbb", "ba(sss)", method_reenable_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2526         SD_BUS_METHOD("LinkUnitFiles", "asbb", "a(sss)", method_link_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2527         SD_BUS_METHOD("PresetUnitFiles", "asbb", "ba(sss)", method_preset_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2528         SD_BUS_METHOD("PresetUnitFilesWithMode", "assbb", "ba(sss)", method_preset_unit_files_with_mode, SD_BUS_VTABLE_UNPRIVILEGED),
2529         SD_BUS_METHOD("MaskUnitFiles", "asbb", "a(sss)", method_mask_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2530         SD_BUS_METHOD("UnmaskUnitFiles", "asb", "a(sss)", method_unmask_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2531         SD_BUS_METHOD("RevertUnitFiles", "as", "a(sss)", method_revert_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2532         SD_BUS_METHOD("SetDefaultTarget", "sb", "a(sss)", method_set_default_target, SD_BUS_VTABLE_UNPRIVILEGED),
2533         SD_BUS_METHOD("GetDefaultTarget", NULL, "s", method_get_default_target, SD_BUS_VTABLE_UNPRIVILEGED),
2534         SD_BUS_METHOD("PresetAllUnitFiles", "sbb", "a(sss)", method_preset_all_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2535         SD_BUS_METHOD("AddDependencyUnitFiles", "asssbb", "a(sss)", method_add_dependency_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2536         SD_BUS_METHOD("GetUnitFileLinks", "sb", "as", method_get_unit_file_links, SD_BUS_VTABLE_UNPRIVILEGED),
2537         SD_BUS_METHOD("SetExitCode", "y", NULL, method_set_exit_code, SD_BUS_VTABLE_UNPRIVILEGED),
2538         SD_BUS_METHOD("LookupDynamicUserByName", "s", "u", method_lookup_dynamic_user_by_name, SD_BUS_VTABLE_UNPRIVILEGED),
2539         SD_BUS_METHOD("LookupDynamicUserByUID", "u", "s", method_lookup_dynamic_user_by_uid, SD_BUS_VTABLE_UNPRIVILEGED),
2540         SD_BUS_METHOD("GetDynamicUsers", NULL, "a(us)", method_get_dynamic_users, SD_BUS_VTABLE_UNPRIVILEGED),
2541
2542         SD_BUS_SIGNAL("UnitNew", "so", 0),
2543         SD_BUS_SIGNAL("UnitRemoved", "so", 0),
2544         SD_BUS_SIGNAL("JobNew", "uos", 0),
2545         SD_BUS_SIGNAL("JobRemoved", "uoss", 0),
2546         SD_BUS_SIGNAL("StartupFinished", "tttttt", 0),
2547         SD_BUS_SIGNAL("UnitFilesChanged", NULL, 0),
2548         SD_BUS_SIGNAL("Reloading", "b", 0),
2549
2550         SD_BUS_VTABLE_END
2551 };
2552
2553 static int send_finished(sd_bus *bus, void *userdata) {
2554         _cleanup_(sd_bus_message_unrefp) sd_bus_message *message = NULL;
2555         usec_t *times = userdata;
2556         int r;
2557
2558         assert(bus);
2559         assert(times);
2560
2561         r = sd_bus_message_new_signal(bus, &message, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "StartupFinished");
2562         if (r < 0)
2563                 return r;
2564
2565         r = sd_bus_message_append(message, "tttttt", times[0], times[1], times[2], times[3], times[4], times[5]);
2566         if (r < 0)
2567                 return r;
2568
2569         return sd_bus_send(bus, message, NULL);
2570 }
2571
2572 void bus_manager_send_finished(
2573                 Manager *m,
2574                 usec_t firmware_usec,
2575                 usec_t loader_usec,
2576                 usec_t kernel_usec,
2577                 usec_t initrd_usec,
2578                 usec_t userspace_usec,
2579                 usec_t total_usec) {
2580
2581         int r;
2582
2583         assert(m);
2584
2585         r = bus_foreach_bus(
2586                         m,
2587                         NULL,
2588                         send_finished,
2589                         (usec_t[6]) {
2590                                 firmware_usec,
2591                                 loader_usec,
2592                                 kernel_usec,
2593                                 initrd_usec,
2594                                 userspace_usec,
2595                                 total_usec
2596                         });
2597         if (r < 0)
2598                 log_debug_errno(r, "Failed to send finished signal: %m");
2599 }
2600
2601 static int send_reloading(sd_bus *bus, void *userdata) {
2602         _cleanup_(sd_bus_message_unrefp) sd_bus_message *message = NULL;
2603         int r;
2604
2605         assert(bus);
2606
2607         r = sd_bus_message_new_signal(bus, &message, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "Reloading");
2608         if (r < 0)
2609                 return r;
2610
2611         r = sd_bus_message_append(message, "b", PTR_TO_INT(userdata));
2612         if (r < 0)
2613                 return r;
2614
2615         return sd_bus_send(bus, message, NULL);
2616 }
2617
2618 void bus_manager_send_reloading(Manager *m, bool active) {
2619         int r;
2620
2621         assert(m);
2622
2623         r = bus_foreach_bus(m, NULL, send_reloading, INT_TO_PTR(active));
2624         if (r < 0)
2625                 log_debug_errno(r, "Failed to send reloading signal: %m");
2626 }
2627
2628 static int send_changed_signal(sd_bus *bus, void *userdata) {
2629         assert(bus);
2630
2631         return sd_bus_emit_properties_changed_strv(bus,
2632                                                    "/org/freedesktop/systemd1",
2633                                                    "org.freedesktop.systemd1.Manager",
2634                                                    NULL);
2635 }
2636
2637 void bus_manager_send_change_signal(Manager *m) {
2638         int r;
2639
2640         assert(m);
2641
2642         r = bus_foreach_bus(m, NULL, send_changed_signal, NULL);
2643         if (r < 0)
2644                 log_debug_errno(r, "Failed to send manager change signal: %m");
2645 }