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 "parse-util.h"
  30 #include "path-util.h"
  31 #include "selinux-access.h"
  32 #include "stat-util.h"
  33 #include "string-util.h"
  34 #include "strv.h"
  35 #include "syslog-util.h"
  36 #include "user-util.h"
  37 #include "virt.h"
  38 #include "watchdog.h"
  39
  40 /* Require 16MiB free in /run/systemd for reloading/reexecing. After all we need to serialize our state there, and if
  41  * we can't we'll fail badly. */
  42 #define RELOAD_DISK_SPACE_MIN (UINT64_C(16) * UINT64_C(1024) * UINT64_C(1024))
  43
  44 static UnitFileFlags unit_file_bools_to_flags(bool runtime, bool force) {
  45         return (runtime ? UNIT_FILE_RUNTIME : 0) |
  46                (force   ? UNIT_FILE_FORCE   : 0);
  47 }
  48
  49 static int property_get_version(
  50                 sd_bus *bus,
  51                 const char *path,
  52                 const char *interface,
  53                 const char *property,
  54                 sd_bus_message *reply,
  55                 void *userdata,
  56                 sd_bus_error *error) {
  57
  58         assert(bus);
  59         assert(reply);
  60
  61         return sd_bus_message_append(reply, "s", PACKAGE_VERSION);
  62 }
  63
  64 static int property_get_features(
  65                 sd_bus *bus,
  66                 const char *path,
  67                 const char *interface,
  68                 const char *property,
  69                 sd_bus_message *reply,
  70                 void *userdata,
  71                 sd_bus_error *error) {
  72
  73         assert(bus);
  74         assert(reply);
  75
  76         return sd_bus_message_append(reply, "s", SYSTEMD_FEATURES);
  77 }
  78
  79 static int property_get_virtualization(
  80                 sd_bus *bus,
  81                 const char *path,
  82                 const char *interface,
  83                 const char *property,
  84                 sd_bus_message *reply,
  85                 void *userdata,
  86                 sd_bus_error *error) {
  87
  88         int v;
  89
  90         assert(bus);
  91         assert(reply);
  92
  93         v = detect_virtualization();
  94
  95         /* Make sure to return the empty string when we detect no virtualization, as that is the API.
  96          *
  97          * https://github.com/systemd/systemd/issues/1423
  98          */
  99
 100         return sd_bus_message_append(
 101                         reply, "s",
 102                         v == VIRTUALIZATION_NONE ? "" : virtualization_to_string(v));
 103 }
 104
 105 static int property_get_architecture(
 106                 sd_bus *bus,
 107                 const char *path,
 108                 const char *interface,
 109                 const char *property,
 110                 sd_bus_message *reply,
 111                 void *userdata,
 112                 sd_bus_error *error) {
 113
 114         assert(bus);
 115         assert(reply);
 116
 117         return sd_bus_message_append(reply, "s", architecture_to_string(uname_architecture()));
 118 }
 119
 120 static int property_get_tainted(
 121                 sd_bus *bus,
 122                 const char *path,
 123                 const char *interface,
 124                 const char *property,
 125                 sd_bus_message *reply,
 126                 void *userdata,
 127                 sd_bus_error *error) {
 128
 129         _cleanup_free_ char *s = NULL;
 130         Manager *m = userdata;
 131
 132         assert(bus);
 133         assert(reply);
 134         assert(m);
 135
 136         s = manager_taint_string(m);
 137         if (!s)
 138                 return log_oom();
 139
 140         return sd_bus_message_append(reply, "s", s);
 141 }
 142
 143 static int property_get_log_target(
 144                 sd_bus *bus,
 145                 const char *path,
 146                 const char *interface,
 147                 const char *property,
 148                 sd_bus_message *reply,
 149                 void *userdata,
 150                 sd_bus_error *error) {
 151
 152         assert(bus);
 153         assert(reply);
 154
 155         return sd_bus_message_append(reply, "s", log_target_to_string(log_get_target()));
 156 }
 157
 158 static int property_set_log_target(
 159                 sd_bus *bus,
 160                 const char *path,
 161                 const char *interface,
 162                 const char *property,
 163                 sd_bus_message *value,
 164                 void *userdata,
 165                 sd_bus_error *error) {
 166
 167         const char *t;
 168         int r;
 169
 170         assert(bus);
 171         assert(value);
 172
 173         r = sd_bus_message_read(value, "s", &t);
 174         if (r < 0)
 175                 return r;
 176
 177         return log_set_target_from_string(t);
 178 }
 179
 180 static int property_get_log_level(
 181                 sd_bus *bus,
 182                 const char *path,
 183                 const char *interface,
 184                 const char *property,
 185                 sd_bus_message *reply,
 186                 void *userdata,
 187                 sd_bus_error *error) {
 188
 189         _cleanup_free_ char *t = NULL;
 190         int r;
 191
 192         assert(bus);
 193         assert(reply);
 194
 195         r = log_level_to_string_alloc(log_get_max_level(), &t);
 196         if (r < 0)
 197                 return r;
 198
 199         return sd_bus_message_append(reply, "s", t);
 200 }
 201
 202 static int property_set_log_level(
 203                 sd_bus *bus,
 204                 const char *path,
 205                 const char *interface,
 206                 const char *property,
 207                 sd_bus_message *value,
 208                 void *userdata,
 209                 sd_bus_error *error) {
 210
 211         const char *t;
 212         int r;
 213
 214         assert(bus);
 215         assert(value);
 216
 217         r = sd_bus_message_read(value, "s", &t);
 218         if (r < 0)
 219                 return r;
 220
 221         r = log_set_max_level_from_string(t);
 222         if (r == 0)
 223                 log_info("Setting log level to %s.", t);
 224         return r;
 225 }
 226
 227 static int property_get_n_names(
 228                 sd_bus *bus,
 229                 const char *path,
 230                 const char *interface,
 231                 const char *property,
 232                 sd_bus_message *reply,
 233                 void *userdata,
 234                 sd_bus_error *error) {
 235
 236         Manager *m = userdata;
 237
 238         assert(bus);
 239         assert(reply);
 240         assert(m);
 241
 242         return sd_bus_message_append(reply, "u", (uint32_t) hashmap_size(m->units));
 243 }
 244
 245 static int property_get_n_failed_units(
 246                 sd_bus *bus,
 247                 const char *path,
 248                 const char *interface,
 249                 const char *property,
 250                 sd_bus_message *reply,
 251                 void *userdata,
 252                 sd_bus_error *error) {
 253
 254         Manager *m = userdata;
 255
 256         assert(bus);
 257         assert(reply);
 258         assert(m);
 259
 260         return sd_bus_message_append(reply, "u", (uint32_t) set_size(m->failed_units));
 261 }
 262
 263 static int property_get_n_jobs(
 264                 sd_bus *bus,
 265                 const char *path,
 266                 const char *interface,
 267                 const char *property,
 268                 sd_bus_message *reply,
 269                 void *userdata,
 270                 sd_bus_error *error) {
 271
 272         Manager *m = userdata;
 273
 274         assert(bus);
 275         assert(reply);
 276         assert(m);
 277
 278         return sd_bus_message_append(reply, "u", (uint32_t) hashmap_size(m->jobs));
 279 }
 280
 281 static int property_get_progress(
 282                 sd_bus *bus,
 283                 const char *path,
 284                 const char *interface,
 285                 const char *property,
 286                 sd_bus_message *reply,
 287                 void *userdata,
 288                 sd_bus_error *error) {
 289
 290         Manager *m = userdata;
 291         double d;
 292
 293         assert(bus);
 294         assert(reply);
 295         assert(m);
 296
 297         if (MANAGER_IS_FINISHED(m))
 298                 d = 1.0;
 299         else
 300                 d = 1.0 - ((double) hashmap_size(m->jobs) / (double) m->n_installed_jobs);
 301
 302         return sd_bus_message_append(reply, "d", d);
 303 }
 304
 305 static int property_get_system_state(
 306                 sd_bus *bus,
 307                 const char *path,
 308                 const char *interface,
 309                 const char *property,
 310                 sd_bus_message *reply,
 311                 void *userdata,
 312                 sd_bus_error *error) {
 313
 314         Manager *m = userdata;
 315
 316         assert(bus);
 317         assert(reply);
 318         assert(m);
 319
 320         return sd_bus_message_append(reply, "s", manager_state_to_string(manager_state(m)));
 321 }
 322
 323 static int property_set_runtime_watchdog(
 324                 sd_bus *bus,
 325                 const char *path,
 326                 const char *interface,
 327                 const char *property,
 328                 sd_bus_message *value,
 329                 void *userdata,
 330                 sd_bus_error *error) {
 331
 332         usec_t *t = userdata;
 333         int r;
 334
 335         assert(bus);
 336         assert(value);
 337
 338         assert_cc(sizeof(usec_t) == sizeof(uint64_t));
 339
 340         r = sd_bus_message_read(value, "t", t);
 341         if (r < 0)
 342                 return r;
 343
 344         return watchdog_set_timeout(t);
 345 }
 346
 347 static int property_get_timer_slack_nsec(
 348                 sd_bus *bus,
 349                 const char *path,
 350                 const char *interface,
 351                 const char *property,
 352                 sd_bus_message *reply,
 353                 void *userdata,
 354                 sd_bus_error *error) {
 355
 356         assert(bus);
 357         assert(reply);
 358
 359         return sd_bus_message_append(reply, "t", (uint64_t) prctl(PR_GET_TIMERSLACK));
 360 }
 361
 362 static int bus_get_unit_by_name(Manager *m, sd_bus_message *message, const char *name, Unit **ret_unit, sd_bus_error *error) {
 363         Unit *u;
 364         int r;
 365
 366         assert(m);
 367         assert(message);
 368         assert(ret_unit);
 369
 370         /* More or less a wrapper around manager_get_unit() that generates nice errors and has one trick up its sleeve:
 371          * if the name is specified empty we use the client's unit. */
 372
 373         if (isempty(name)) {
 374                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 375                 pid_t pid;
 376
 377                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 378                 if (r < 0)
 379                         return r;
 380
 381                 r = sd_bus_creds_get_pid(creds, &pid);
 382                 if (r < 0)
 383                         return r;
 384
 385                 u = manager_get_unit_by_pid(m, pid);
 386                 if (!u)
 387                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Client not member of any unit.");
 388         } else {
 389                 u = manager_get_unit(m, name);
 390                 if (!u)
 391                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s not loaded.", name);
 392         }
 393
 394         *ret_unit = u;
 395         return 0;
 396 }
 397
 398 static int bus_load_unit_by_name(Manager *m, sd_bus_message *message, const char *name, Unit **ret_unit, sd_bus_error *error) {
 399         assert(m);
 400         assert(message);
 401         assert(ret_unit);
 402
 403         /* Pretty much the same as bus_get_unit_by_name(), but we also load the unit if necessary. */
 404
 405         if (isempty(name))
 406                 return bus_get_unit_by_name(m, message, name, ret_unit, error);
 407
 408         return manager_load_unit(m, name, NULL, error, ret_unit);
 409 }
 410
 411 static int method_get_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 412         _cleanup_free_ char *path = NULL;
 413         Manager *m = userdata;
 414         const char *name;
 415         Unit *u;
 416         int r;
 417
 418         assert(message);
 419         assert(m);
 420
 421         /* Anyone can call this method */
 422
 423         r = sd_bus_message_read(message, "s", &name);
 424         if (r < 0)
 425                 return r;
 426
 427         r = bus_get_unit_by_name(m, message, name, &u, error);
 428         if (r < 0)
 429                 return r;
 430
 431         r = mac_selinux_unit_access_check(u, message, "status", error);
 432         if (r < 0)
 433                 return r;
 434
 435         path = unit_dbus_path(u);
 436         if (!path)
 437                 return -ENOMEM;
 438
 439         return sd_bus_reply_method_return(message, "o", path);
 440 }
 441
 442 static int method_get_unit_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 443         _cleanup_free_ char *path = NULL;
 444         Manager *m = userdata;
 445         pid_t pid;
 446         Unit *u;
 447         int r;
 448
 449         assert(message);
 450         assert(m);
 451
 452         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 453
 454         /* Anyone can call this method */
 455
 456         r = sd_bus_message_read(message, "u", &pid);
 457         if (r < 0)
 458                 return r;
 459         if (pid < 0)
 460                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid PID " PID_FMT, pid);
 461
 462         if (pid == 0) {
 463                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 464
 465                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 466                 if (r < 0)
 467                         return r;
 468
 469                 r = sd_bus_creds_get_pid(creds, &pid);
 470                 if (r < 0)
 471                         return r;
 472         }
 473
 474         u = manager_get_unit_by_pid(m, pid);
 475         if (!u)
 476                 return sd_bus_error_setf(error, BUS_ERROR_NO_UNIT_FOR_PID, "PID "PID_FMT" does not belong to any loaded unit.", pid);
 477
 478         r = mac_selinux_unit_access_check(u, message, "status", error);
 479         if (r < 0)
 480                 return r;
 481
 482         path = unit_dbus_path(u);
 483         if (!path)
 484                 return -ENOMEM;
 485
 486         return sd_bus_reply_method_return(message, "o", path);
 487 }
 488
 489 static int method_get_unit_by_invocation_id(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 490         _cleanup_free_ char *path = NULL;
 491         Manager *m = userdata;
 492         sd_id128_t id;
 493         const void *a;
 494         Unit *u;
 495         size_t sz;
 496         int r;
 497
 498         assert(message);
 499         assert(m);
 500
 501         /* Anyone can call this method */
 502
 503         r = sd_bus_message_read_array(message, 'y', &a, &sz);
 504         if (r < 0)
 505                 return r;
 506         if (sz == 0)
 507                 id = SD_ID128_NULL;
 508         else if (sz == 16)
 509                 memcpy(&id, a, sz);
 510         else
 511                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid invocation ID");
 512
 513         if (sd_id128_is_null(id)) {
 514                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 515                 pid_t pid;
 516
 517                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 518                 if (r < 0)
 519                         return r;
 520
 521                 r = sd_bus_creds_get_pid(creds, &pid);
 522                 if (r < 0)
 523                         return r;
 524
 525                 u = manager_get_unit_by_pid(m, pid);
 526                 if (!u)
 527                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Client " PID_FMT " not member of any unit.", pid);
 528         } else {
 529                 u = hashmap_get(m->units_by_invocation_id, &id);
 530                 if (!u)
 531                         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));
 532         }
 533
 534         r = mac_selinux_unit_access_check(u, message, "status", error);
 535         if (r < 0)
 536                 return r;
 537
 538         /* So here's a special trick: the bus path we return actually references the unit by its invocation ID instead
 539          * of the unit name. This means it stays valid only as long as the invocation ID stays the same. */
 540         path = unit_dbus_path_invocation_id(u);
 541         if (!path)
 542                 return -ENOMEM;
 543
 544         return sd_bus_reply_method_return(message, "o", path);
 545 }
 546
 547 static int method_load_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 548         _cleanup_free_ char *path = NULL;
 549         Manager *m = userdata;
 550         const char *name;
 551         Unit *u;
 552         int r;
 553
 554         assert(message);
 555         assert(m);
 556
 557         /* Anyone can call this method */
 558
 559         r = sd_bus_message_read(message, "s", &name);
 560         if (r < 0)
 561                 return r;
 562
 563         r = bus_load_unit_by_name(m, message, name, &u, error);
 564         if (r < 0)
 565                 return r;
 566
 567         r = mac_selinux_unit_access_check(u, message, "status", error);
 568         if (r < 0)
 569                 return r;
 570
 571         path = unit_dbus_path(u);
 572         if (!path)
 573                 return -ENOMEM;
 574
 575         return sd_bus_reply_method_return(message, "o", path);
 576 }
 577
 578 static int method_start_unit_generic(sd_bus_message *message, Manager *m, JobType job_type, bool reload_if_possible, sd_bus_error *error) {
 579         const char *name;
 580         Unit *u;
 581         int r;
 582
 583         assert(message);
 584         assert(m);
 585
 586         r = sd_bus_message_read(message, "s", &name);
 587         if (r < 0)
 588                 return r;
 589
 590         r = manager_load_unit(m, name, NULL, error, &u);
 591         if (r < 0)
 592                 return r;
 593
 594         return bus_unit_method_start_generic(message, u, job_type, reload_if_possible, error);
 595 }
 596
 597 static int method_start_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 598         return method_start_unit_generic(message, userdata, JOB_START, false, error);
 599 }
 600
 601 static int method_stop_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 602         return method_start_unit_generic(message, userdata, JOB_STOP, false, error);
 603 }
 604
 605 static int method_reload_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 606         return method_start_unit_generic(message, userdata, JOB_RELOAD, false, error);
 607 }
 608
 609 static int method_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 610         return method_start_unit_generic(message, userdata, JOB_RESTART, false, error);
 611 }
 612
 613 static int method_try_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 614         return method_start_unit_generic(message, userdata, JOB_TRY_RESTART, false, error);
 615 }
 616
 617 static int method_reload_or_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 618         return method_start_unit_generic(message, userdata, JOB_RESTART, true, error);
 619 }
 620
 621 static int method_reload_or_try_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 622         return method_start_unit_generic(message, userdata, JOB_TRY_RESTART, true, error);
 623 }
 624
 625 static int method_start_unit_replace(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 626         Manager *m = userdata;
 627         const char *old_name;
 628         Unit *u;
 629         int r;
 630
 631         assert(message);
 632         assert(m);
 633
 634         r = sd_bus_message_read(message, "s", &old_name);
 635         if (r < 0)
 636                 return r;
 637
 638         r = bus_get_unit_by_name(m, message, old_name, &u, error);
 639         if (r < 0)
 640                 return r;
 641         if (!u->job || u->job->type != JOB_START)
 642                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "No job queued for unit %s", old_name);
 643
 644         return method_start_unit_generic(message, m, JOB_START, false, error);
 645 }
 646
 647 static int method_kill_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 648         Manager *m = userdata;
 649         const char *name;
 650         Unit *u;
 651         int r;
 652
 653         assert(message);
 654         assert(m);
 655
 656         r = sd_bus_message_read(message, "s", &name);
 657         if (r < 0)
 658                 return r;
 659
 660         r = bus_get_unit_by_name(m, message, name, &u, error);
 661         if (r < 0)
 662                 return r;
 663
 664         return bus_unit_method_kill(message, u, error);
 665 }
 666
 667 static int method_reset_failed_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 668         Manager *m = userdata;
 669         const char *name;
 670         Unit *u;
 671         int r;
 672
 673         assert(message);
 674         assert(m);
 675
 676         r = sd_bus_message_read(message, "s", &name);
 677         if (r < 0)
 678                 return r;
 679
 680         r = bus_get_unit_by_name(m, message, name, &u, error);
 681         if (r < 0)
 682                 return r;
 683
 684         return bus_unit_method_reset_failed(message, u, error);
 685 }
 686
 687 static int method_set_unit_properties(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 688         Manager *m = userdata;
 689         const char *name;
 690         Unit *u;
 691         int r;
 692
 693         assert(message);
 694         assert(m);
 695
 696         r = sd_bus_message_read(message, "s", &name);
 697         if (r < 0)
 698                 return r;
 699
 700         r = bus_load_unit_by_name(m, message, name, &u, error);
 701         if (r < 0)
 702                 return r;
 703
 704         r = bus_unit_check_load_state(u, error);
 705         if (r < 0)
 706                 return r;
 707
 708         return bus_unit_method_set_properties(message, u, error);
 709 }
 710
 711 static int method_ref_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 712         Manager *m = userdata;
 713         const char *name;
 714         Unit *u;
 715         int r;
 716
 717         assert(message);
 718         assert(m);
 719
 720         r = sd_bus_message_read(message, "s", &name);
 721         if (r < 0)
 722                 return r;
 723
 724         r = bus_load_unit_by_name(m, message, name, &u, error);
 725         if (r < 0)
 726                 return r;
 727
 728         r = bus_unit_check_load_state(u, error);
 729         if (r < 0)
 730                 return r;
 731
 732         return bus_unit_method_ref(message, u, error);
 733 }
 734
 735 static int method_unref_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 736         Manager *m = userdata;
 737         const char *name;
 738         Unit *u;
 739         int r;
 740
 741         assert(message);
 742         assert(m);
 743
 744         r = sd_bus_message_read(message, "s", &name);
 745         if (r < 0)
 746                 return r;
 747
 748         r = bus_load_unit_by_name(m, message, name, &u, error);
 749         if (r < 0)
 750                 return r;
 751
 752         r = bus_unit_check_load_state(u, error);
 753         if (r < 0)
 754                 return r;
 755
 756         return bus_unit_method_unref(message, u, error);
 757 }
 758
 759 static int reply_unit_info(sd_bus_message *reply, Unit *u) {
 760         _cleanup_free_ char *unit_path = NULL, *job_path = NULL;
 761         Unit *following;
 762
 763         following = unit_following(u);
 764
 765         unit_path = unit_dbus_path(u);
 766         if (!unit_path)
 767                 return -ENOMEM;
 768
 769         if (u->job) {
 770                 job_path = job_dbus_path(u->job);
 771                 if (!job_path)
 772                         return -ENOMEM;
 773         }
 774
 775         return sd_bus_message_append(
 776                         reply, "(ssssssouso)",
 777                         u->id,
 778                         unit_description(u),
 779                         unit_load_state_to_string(u->load_state),
 780                         unit_active_state_to_string(unit_active_state(u)),
 781                         unit_sub_state_to_string(u),
 782                         following ? following->id : "",
 783                         unit_path,
 784                         u->job ? u->job->id : 0,
 785                         u->job ? job_type_to_string(u->job->type) : "",
 786                         job_path ? job_path : "/");
 787 }
 788
 789 static int method_list_units_by_names(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 790         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 791         Manager *m = userdata;
 792         int r;
 793         char **unit;
 794         _cleanup_strv_free_ char **units = NULL;
 795
 796         assert(message);
 797         assert(m);
 798
 799         r = sd_bus_message_read_strv(message, &units);
 800         if (r < 0)
 801                 return r;
 802
 803         r = sd_bus_message_new_method_return(message, &reply);
 804         if (r < 0)
 805                 return r;
 806
 807         r = sd_bus_message_open_container(reply, 'a', "(ssssssouso)");
 808         if (r < 0)
 809                 return r;
 810
 811         STRV_FOREACH(unit, units) {
 812                 Unit *u;
 813
 814                 if (!unit_name_is_valid(*unit, UNIT_NAME_ANY))
 815                         continue;
 816
 817                 r = bus_load_unit_by_name(m, message, *unit, &u, error);
 818                 if (r < 0)
 819                         return r;
 820
 821                 r = reply_unit_info(reply, u);
 822                 if (r < 0)
 823                         return r;
 824         }
 825
 826         r = sd_bus_message_close_container(reply);
 827         if (r < 0)
 828                 return r;
 829
 830         return sd_bus_send(NULL, reply, NULL);
 831 }
 832
 833 static int method_get_unit_processes(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 834         Manager *m = userdata;
 835         const char *name;
 836         Unit *u;
 837         int r;
 838
 839         assert(message);
 840         assert(m);
 841
 842         r = sd_bus_message_read(message, "s", &name);
 843         if (r < 0)
 844                 return r;
 845
 846         r = bus_get_unit_by_name(m, message, name, &u, error);
 847         if (r < 0)
 848                 return r;
 849
 850         return bus_unit_method_get_processes(message, u, error);
 851 }
 852
 853 static int method_attach_processes_to_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 854         Manager *m = userdata;
 855         const char *name;
 856         Unit *u;
 857         int r;
 858
 859         assert(message);
 860         assert(m);
 861
 862         r = sd_bus_message_read(message, "s", &name);
 863         if (r < 0)
 864                 return r;
 865
 866         r = bus_get_unit_by_name(m, message, name, &u, error);
 867         if (r < 0)
 868                 return r;
 869
 870         return bus_unit_method_attach_processes(message, u, error);
 871 }
 872
 873 static int transient_unit_from_message(
 874                 Manager *m,
 875                 sd_bus_message *message,
 876                 const char *name,
 877                 Unit **unit,
 878                 sd_bus_error *error) {
 879
 880         UnitType t;
 881         Unit *u;
 882         int r;
 883
 884         assert(m);
 885         assert(message);
 886         assert(name);
 887
 888         t = unit_name_to_type(name);
 889         if (t < 0)
 890                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid unit name or type.");
 891
 892         if (!unit_vtable[t]->can_transient)
 893                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unit type %s does not support transient units.", unit_type_to_string(t));
 894
 895         r = manager_load_unit(m, name, NULL, error, &u);
 896         if (r < 0)
 897                 return r;
 898
 899         if (!unit_is_pristine(u))
 900                 return sd_bus_error_setf(error, BUS_ERROR_UNIT_EXISTS, "Unit %s already exists.", name);
 901
 902         /* OK, the unit failed to load and is unreferenced, now let's
 903          * fill in the transient data instead */
 904         r = unit_make_transient(u);
 905         if (r < 0)
 906                 return r;
 907
 908         /* Set our properties */
 909         r = bus_unit_set_properties(u, message, UNIT_RUNTIME, false, error);
 910         if (r < 0)
 911                 return r;
 912
 913         /* If the client asked for it, automatically add a reference to this unit. */
 914         if (u->bus_track_add) {
 915                 r = bus_unit_track_add_sender(u, message);
 916                 if (r < 0)
 917                         return log_error_errno(r, "Failed to watch sender: %m");
 918         }
 919
 920         /* Now load the missing bits of the unit we just created */
 921         unit_add_to_load_queue(u);
 922         manager_dispatch_load_queue(m);
 923
 924         *unit = u;
 925
 926         return 0;
 927 }
 928
 929 static int transient_aux_units_from_message(
 930                 Manager *m,
 931                 sd_bus_message *message,
 932                 sd_bus_error *error) {
 933
 934         int r;
 935
 936         assert(m);
 937         assert(message);
 938
 939         r = sd_bus_message_enter_container(message, 'a', "(sa(sv))");
 940         if (r < 0)
 941                 return r;
 942
 943         while ((r = sd_bus_message_enter_container(message, 'r', "sa(sv)")) > 0) {
 944                 const char *name = NULL;
 945                 Unit *u;
 946
 947                 r = sd_bus_message_read(message, "s", &name);
 948                 if (r < 0)
 949                         return r;
 950
 951                 r = transient_unit_from_message(m, message, name, &u, error);
 952                 if (r < 0)
 953                         return r;
 954
 955                 r = sd_bus_message_exit_container(message);
 956                 if (r < 0)
 957                         return r;
 958         }
 959         if (r < 0)
 960                 return r;
 961
 962         r = sd_bus_message_exit_container(message);
 963         if (r < 0)
 964                 return r;
 965
 966         return 0;
 967 }
 968
 969 static int method_start_transient_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 970         const char *name, *smode;
 971         Manager *m = userdata;
 972         JobMode mode;
 973         Unit *u;
 974         int r;
 975
 976         assert(message);
 977         assert(m);
 978
 979         r = mac_selinux_access_check(message, "start", error);
 980         if (r < 0)
 981                 return r;
 982
 983         r = sd_bus_message_read(message, "ss", &name, &smode);
 984         if (r < 0)
 985                 return r;
 986
 987         mode = job_mode_from_string(smode);
 988         if (mode < 0)
 989                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Job mode %s is invalid.", smode);
 990
 991         r = bus_verify_manage_units_async(m, message, error);
 992         if (r < 0)
 993                 return r;
 994         if (r == 0)
 995                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
 996
 997         r = transient_unit_from_message(m, message, name, &u, error);
 998         if (r < 0)
 999                 return r;
1000
1001         r = transient_aux_units_from_message(m, message, error);
1002         if (r < 0)
1003                 return r;
1004
1005         /* Finally, start it */
1006         return bus_unit_queue_job(message, u, JOB_START, mode, false, error);
1007 }
1008
1009 static int method_get_job(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1010         _cleanup_free_ char *path = NULL;
1011         Manager *m = userdata;
1012         uint32_t id;
1013         Job *j;
1014         int r;
1015
1016         assert(message);
1017         assert(m);
1018
1019         /* Anyone can call this method */
1020
1021         r = sd_bus_message_read(message, "u", &id);
1022         if (r < 0)
1023                 return r;
1024
1025         j = manager_get_job(m, id);
1026         if (!j)
1027                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
1028
1029         r = mac_selinux_unit_access_check(j->unit, message, "status", error);
1030         if (r < 0)
1031                 return r;
1032
1033         path = job_dbus_path(j);
1034         if (!path)
1035                 return -ENOMEM;
1036
1037         return sd_bus_reply_method_return(message, "o", path);
1038 }
1039
1040 static int method_cancel_job(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1041         Manager *m = userdata;
1042         uint32_t id;
1043         Job *j;
1044         int r;
1045
1046         assert(message);
1047         assert(m);
1048
1049         r = sd_bus_message_read(message, "u", &id);
1050         if (r < 0)
1051                 return r;
1052
1053         j = manager_get_job(m, id);
1054         if (!j)
1055                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
1056
1057         return bus_job_method_cancel(message, j, error);
1058 }
1059
1060 static int method_clear_jobs(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1061         Manager *m = userdata;
1062         int r;
1063
1064         assert(message);
1065         assert(m);
1066
1067         r = mac_selinux_access_check(message, "reload", error);
1068         if (r < 0)
1069                 return r;
1070
1071         r = bus_verify_manage_units_async(m, message, error);
1072         if (r < 0)
1073                 return r;
1074         if (r == 0)
1075                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1076
1077         manager_clear_jobs(m);
1078
1079         return sd_bus_reply_method_return(message, NULL);
1080 }
1081
1082 static int method_reset_failed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1083         Manager *m = userdata;
1084         int r;
1085
1086         assert(message);
1087         assert(m);
1088
1089         r = mac_selinux_access_check(message, "reload", error);
1090         if (r < 0)
1091                 return r;
1092
1093         r = bus_verify_manage_units_async(m, message, error);
1094         if (r < 0)
1095                 return r;
1096         if (r == 0)
1097                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1098
1099         manager_reset_failed(m);
1100
1101         return sd_bus_reply_method_return(message, NULL);
1102 }
1103
1104 static int list_units_filtered(sd_bus_message *message, void *userdata, sd_bus_error *error, char **states, char **patterns) {
1105         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1106         Manager *m = userdata;
1107         const char *k;
1108         Iterator i;
1109         Unit *u;
1110         int r;
1111
1112         assert(message);
1113         assert(m);
1114
1115         /* Anyone can call this method */
1116
1117         r = mac_selinux_access_check(message, "status", error);
1118         if (r < 0)
1119                 return r;
1120
1121         r = sd_bus_message_new_method_return(message, &reply);
1122         if (r < 0)
1123                 return r;
1124
1125         r = sd_bus_message_open_container(reply, 'a', "(ssssssouso)");
1126         if (r < 0)
1127                 return r;
1128
1129         HASHMAP_FOREACH_KEY(u, k, m->units, i) {
1130                 if (k != u->id)
1131                         continue;
1132
1133                 if (!strv_isempty(states) &&
1134                     !strv_contains(states, unit_load_state_to_string(u->load_state)) &&
1135                     !strv_contains(states, unit_active_state_to_string(unit_active_state(u))) &&
1136                     !strv_contains(states, unit_sub_state_to_string(u)))
1137                         continue;
1138
1139                 if (!strv_isempty(patterns) &&
1140                     !strv_fnmatch_or_empty(patterns, u->id, FNM_NOESCAPE))
1141                         continue;
1142
1143                 r = reply_unit_info(reply, u);
1144                 if (r < 0)
1145                         return r;
1146         }
1147
1148         r = sd_bus_message_close_container(reply);
1149         if (r < 0)
1150                 return r;
1151
1152         return sd_bus_send(NULL, reply, NULL);
1153 }
1154
1155 static int method_list_units(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1156         return list_units_filtered(message, userdata, error, NULL, NULL);
1157 }
1158
1159 static int method_list_units_filtered(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1160         _cleanup_strv_free_ char **states = NULL;
1161         int r;
1162
1163         r = sd_bus_message_read_strv(message, &states);
1164         if (r < 0)
1165                 return r;
1166
1167         return list_units_filtered(message, userdata, error, states, NULL);
1168 }
1169
1170 static int method_list_units_by_patterns(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1171         _cleanup_strv_free_ char **states = NULL;
1172         _cleanup_strv_free_ char **patterns = NULL;
1173         int r;
1174
1175         r = sd_bus_message_read_strv(message, &states);
1176         if (r < 0)
1177                 return r;
1178
1179         r = sd_bus_message_read_strv(message, &patterns);
1180         if (r < 0)
1181                 return r;
1182
1183         return list_units_filtered(message, userdata, error, states, patterns);
1184 }
1185
1186 static int method_list_jobs(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1187         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1188         Manager *m = userdata;
1189         Iterator i;
1190         Job *j;
1191         int r;
1192
1193         assert(message);
1194         assert(m);
1195
1196         /* Anyone can call this method */
1197
1198         r = mac_selinux_access_check(message, "status", error);
1199         if (r < 0)
1200                 return r;
1201
1202         r = sd_bus_message_new_method_return(message, &reply);
1203         if (r < 0)
1204                 return r;
1205
1206         r = sd_bus_message_open_container(reply, 'a', "(usssoo)");
1207         if (r < 0)
1208                 return r;
1209
1210         HASHMAP_FOREACH(j, m->jobs, i) {
1211                 _cleanup_free_ char *unit_path = NULL, *job_path = NULL;
1212
1213                 job_path = job_dbus_path(j);
1214                 if (!job_path)
1215                         return -ENOMEM;
1216
1217                 unit_path = unit_dbus_path(j->unit);
1218                 if (!unit_path)
1219                         return -ENOMEM;
1220
1221                 r = sd_bus_message_append(
1222                                 reply, "(usssoo)",
1223                                 j->id,
1224                                 j->unit->id,
1225                                 job_type_to_string(j->type),
1226                                 job_state_to_string(j->state),
1227                                 job_path,
1228                                 unit_path);
1229                 if (r < 0)
1230                         return r;
1231         }
1232
1233         r = sd_bus_message_close_container(reply);
1234         if (r < 0)
1235                 return r;
1236
1237         return sd_bus_send(NULL, reply, NULL);
1238 }
1239
1240 static int method_subscribe(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1241         Manager *m = userdata;
1242         int r;
1243
1244         assert(message);
1245         assert(m);
1246
1247         /* Anyone can call this method */
1248
1249         r = mac_selinux_access_check(message, "status", error);
1250         if (r < 0)
1251                 return r;
1252
1253         if (sd_bus_message_get_bus(message) == m->api_bus) {
1254
1255                 /* Note that direct bus connection subscribe by
1256                  * default, we only track peers on the API bus here */
1257
1258                 if (!m->subscribed) {
1259                         r = sd_bus_track_new(sd_bus_message_get_bus(message), &m->subscribed, NULL, NULL);
1260                         if (r < 0)
1261                                 return r;
1262                 }
1263
1264                 r = sd_bus_track_add_sender(m->subscribed, message);
1265                 if (r < 0)
1266                         return r;
1267                 if (r == 0)
1268                         return sd_bus_error_setf(error, BUS_ERROR_ALREADY_SUBSCRIBED, "Client is already subscribed.");
1269         }
1270
1271         return sd_bus_reply_method_return(message, NULL);
1272 }
1273
1274 static int method_unsubscribe(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1275         Manager *m = userdata;
1276         int r;
1277
1278         assert(message);
1279         assert(m);
1280
1281         /* Anyone can call this method */
1282
1283         r = mac_selinux_access_check(message, "status", error);
1284         if (r < 0)
1285                 return r;
1286
1287         if (sd_bus_message_get_bus(message) == m->api_bus) {
1288                 r = sd_bus_track_remove_sender(m->subscribed, message);
1289                 if (r < 0)
1290                         return r;
1291                 if (r == 0)
1292                         return sd_bus_error_setf(error, BUS_ERROR_NOT_SUBSCRIBED, "Client is not subscribed.");
1293         }
1294
1295         return sd_bus_reply_method_return(message, NULL);
1296 }
1297
1298 static int method_dump(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1299         _cleanup_free_ char *dump = NULL;
1300         Manager *m = userdata;
1301         int r;
1302
1303         assert(message);
1304         assert(m);
1305
1306         /* Anyone can call this method */
1307
1308         r = mac_selinux_access_check(message, "status", error);
1309         if (r < 0)
1310                 return r;
1311
1312         r = manager_get_dump_string(m, &dump);
1313         if (r < 0)
1314                 return r;
1315
1316         return sd_bus_reply_method_return(message, "s", dump);
1317 }
1318
1319 static int method_refuse_snapshot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1320         return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Support for snapshots has been removed.");
1321 }
1322
1323 static int verify_run_space(const char *message, sd_bus_error *error) {
1324         struct statvfs svfs;
1325         uint64_t available;
1326
1327         if (statvfs("/run/systemd", &svfs) < 0)
1328                 return sd_bus_error_set_errnof(error, errno, "Failed to statvfs(/run/systemd): %m");
1329
1330         available = (uint64_t) svfs.f_bfree * (uint64_t) svfs.f_bsize;
1331
1332         if (available < RELOAD_DISK_SPACE_MIN) {
1333                 char fb_available[FORMAT_BYTES_MAX], fb_need[FORMAT_BYTES_MAX];
1334                 return sd_bus_error_setf(error,
1335                                          BUS_ERROR_DISK_FULL,
1336                                          "%s, not enough space available on /run/systemd. "
1337                                          "Currently, %s are free, but a safety buffer of %s is enforced.",
1338                                          message,
1339                                          format_bytes(fb_available, sizeof(fb_available), available),
1340                                          format_bytes(fb_need, sizeof(fb_need), RELOAD_DISK_SPACE_MIN));
1341         }
1342
1343         return 0;
1344 }
1345
1346 int verify_run_space_and_log(const char *message) {
1347         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1348         int r;
1349
1350         r = verify_run_space(message, &error);
1351         if (r < 0)
1352                 log_error_errno(r, "%s", bus_error_message(&error, r));
1353
1354         return r;
1355 }
1356
1357 static int method_reload(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1358         Manager *m = userdata;
1359         int r;
1360
1361         assert(message);
1362         assert(m);
1363
1364         r = verify_run_space("Refusing to reload", error);
1365         if (r < 0)
1366                 return r;
1367
1368         r = mac_selinux_access_check(message, "reload", error);
1369         if (r < 0)
1370                 return r;
1371
1372         r = bus_verify_reload_daemon_async(m, message, error);
1373         if (r < 0)
1374                 return r;
1375         if (r == 0)
1376                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1377
1378         /* Instead of sending the reply back right away, we just
1379          * remember that we need to and then send it after the reload
1380          * is finished. That way the caller knows when the reload
1381          * finished. */
1382
1383         assert(!m->queued_message);
1384         r = sd_bus_message_new_method_return(message, &m->queued_message);
1385         if (r < 0)
1386                 return r;
1387
1388         m->exit_code = MANAGER_RELOAD;
1389
1390         return 1;
1391 }
1392
1393 static int method_reexecute(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1394         Manager *m = userdata;
1395         int r;
1396
1397         assert(message);
1398         assert(m);
1399
1400         r = verify_run_space("Refusing to reexecute", error);
1401         if (r < 0)
1402                 return r;
1403
1404         r = mac_selinux_access_check(message, "reload", error);
1405         if (r < 0)
1406                 return r;
1407
1408         r = bus_verify_reload_daemon_async(m, message, error);
1409         if (r < 0)
1410                 return r;
1411         if (r == 0)
1412                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1413
1414         /* We don't send a reply back here, the client should
1415          * just wait for us disconnecting. */
1416
1417         m->exit_code = MANAGER_REEXECUTE;
1418         return 1;
1419 }
1420
1421 static int method_exit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1422         Manager *m = userdata;
1423         int r;
1424
1425         assert(message);
1426         assert(m);
1427
1428         r = mac_selinux_access_check(message, "halt", error);
1429         if (r < 0)
1430                 return r;
1431
1432         /* Exit() (in contrast to SetExitCode()) is actually allowed even if
1433          * we are running on the host. It will fall back on reboot() in
1434          * systemd-shutdown if it cannot do the exit() because it isn't a
1435          * container. */
1436
1437         m->exit_code = MANAGER_EXIT;
1438
1439         return sd_bus_reply_method_return(message, NULL);
1440 }
1441
1442 static int method_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1443         Manager *m = userdata;
1444         int r;
1445
1446         assert(message);
1447         assert(m);
1448
1449         r = mac_selinux_access_check(message, "reboot", error);
1450         if (r < 0)
1451                 return r;
1452
1453         if (!MANAGER_IS_SYSTEM(m))
1454                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Reboot is only supported for system managers.");
1455
1456         m->exit_code = MANAGER_REBOOT;
1457
1458         return sd_bus_reply_method_return(message, NULL);
1459 }
1460
1461 static int method_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1462         Manager *m = userdata;
1463         int r;
1464
1465         assert(message);
1466         assert(m);
1467
1468         r = mac_selinux_access_check(message, "halt", error);
1469         if (r < 0)
1470                 return r;
1471
1472         if (!MANAGER_IS_SYSTEM(m))
1473                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Powering off is only supported for system managers.");
1474
1475         m->exit_code = MANAGER_POWEROFF;
1476
1477         return sd_bus_reply_method_return(message, NULL);
1478 }
1479
1480 static int method_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1481         Manager *m = userdata;
1482         int r;
1483
1484         assert(message);
1485         assert(m);
1486
1487         r = mac_selinux_access_check(message, "halt", error);
1488         if (r < 0)
1489                 return r;
1490
1491         if (!MANAGER_IS_SYSTEM(m))
1492                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Halt is only supported for system managers.");
1493
1494         m->exit_code = MANAGER_HALT;
1495
1496         return sd_bus_reply_method_return(message, NULL);
1497 }
1498
1499 static int method_kexec(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1500         Manager *m = userdata;
1501         int r;
1502
1503         assert(message);
1504         assert(m);
1505
1506         r = mac_selinux_access_check(message, "reboot", error);
1507         if (r < 0)
1508                 return r;
1509
1510         if (!MANAGER_IS_SYSTEM(m))
1511                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "KExec is only supported for system managers.");
1512
1513         m->exit_code = MANAGER_KEXEC;
1514
1515         return sd_bus_reply_method_return(message, NULL);
1516 }
1517
1518 static int method_switch_root(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1519         char *ri = NULL, *rt = NULL;
1520         const char *root, *init;
1521         Manager *m = userdata;
1522         struct statvfs svfs;
1523         uint64_t available;
1524         int r;
1525
1526         assert(message);
1527         assert(m);
1528
1529         if (statvfs("/run/systemd", &svfs) < 0)
1530                 return sd_bus_error_set_errnof(error, errno, "Failed to statvfs(/run/systemd): %m");
1531
1532         available = (uint64_t) svfs.f_bfree * (uint64_t) svfs.f_bsize;
1533
1534         if (available < RELOAD_DISK_SPACE_MIN) {
1535                 char fb_available[FORMAT_BYTES_MAX], fb_need[FORMAT_BYTES_MAX];
1536                 log_warning("Dangerously low amount of free space on /run/systemd, root switching operation might not complete successfuly. "
1537                             "Currently, %s are free, but %s are suggested. Proceeding anyway.",
1538                             format_bytes(fb_available, sizeof(fb_available), available),
1539                             format_bytes(fb_need, sizeof(fb_need), RELOAD_DISK_SPACE_MIN));
1540         }
1541
1542         r = mac_selinux_access_check(message, "reboot", error);
1543         if (r < 0)
1544                 return r;
1545
1546         if (!MANAGER_IS_SYSTEM(m))
1547                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Root switching is only supported by system manager.");
1548
1549         r = sd_bus_message_read(message, "ss", &root, &init);
1550         if (r < 0)
1551                 return r;
1552
1553         if (isempty(root))
1554                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "New root directory may not be the empty string.");
1555         if (!path_is_absolute(root))
1556                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "New root path '%s' is not absolute.", root);
1557         if (path_equal(root, "/"))
1558                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "New root directory cannot be the old root directory.");
1559
1560         /* Safety check */
1561         if (isempty(init)) {
1562                 r = path_is_os_tree(root);
1563                 if (r < 0)
1564                         return sd_bus_error_set_errnof(error, r, "Failed to determine whether root path '%s' contains an OS tree: %m", root);
1565                 if (r == 0)
1566                         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);
1567         } else {
1568                 _cleanup_free_ char *chased = NULL;
1569
1570                 if (!path_is_absolute(init))
1571                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path to init binary '%s' not absolute.", init);
1572
1573                 r = chase_symlinks(init, root, CHASE_PREFIX_ROOT|CHASE_TRAIL_SLASH, &chased);
1574                 if (r < 0)
1575                         return sd_bus_error_set_errnof(error, r, "Could not resolve init executable %s: %m", init);
1576
1577                 if (laccess(chased, X_OK) < 0) {
1578                         if (errno == EACCES)
1579                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Init binary %s is not executable.", init);
1580
1581                         return sd_bus_error_set_errnof(error, r, "Could not check whether init binary %s is executable: %m", init);
1582                 }
1583         }
1584
1585         rt = strdup(root);
1586         if (!rt)
1587                 return -ENOMEM;
1588
1589         if (!isempty(init)) {
1590                 ri = strdup(init);
1591                 if (!ri) {
1592                         free(rt);
1593                         return -ENOMEM;
1594                 }
1595         }
1596
1597         free(m->switch_root);
1598         m->switch_root = rt;
1599
1600         free(m->switch_root_init);
1601         m->switch_root_init = ri;
1602
1603         m->exit_code = MANAGER_SWITCH_ROOT;
1604
1605         return sd_bus_reply_method_return(message, NULL);
1606 }
1607
1608 static int method_set_environment(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1609         _cleanup_strv_free_ char **plus = NULL;
1610         Manager *m = userdata;
1611         int r;
1612
1613         assert(message);
1614         assert(m);
1615
1616         r = mac_selinux_access_check(message, "reload", error);
1617         if (r < 0)
1618                 return r;
1619
1620         r = sd_bus_message_read_strv(message, &plus);
1621         if (r < 0)
1622                 return r;
1623         if (!strv_env_is_valid(plus))
1624                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment assignments");
1625
1626         r = bus_verify_set_environment_async(m, message, error);
1627         if (r < 0)
1628                 return r;
1629         if (r == 0)
1630                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1631
1632         r = manager_environment_add(m, NULL, plus);
1633         if (r < 0)
1634                 return r;
1635
1636         return sd_bus_reply_method_return(message, NULL);
1637 }
1638
1639 static int method_unset_environment(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1640         _cleanup_strv_free_ char **minus = NULL;
1641         Manager *m = userdata;
1642         int r;
1643
1644         assert(message);
1645         assert(m);
1646
1647         r = mac_selinux_access_check(message, "reload", error);
1648         if (r < 0)
1649                 return r;
1650
1651         r = sd_bus_message_read_strv(message, &minus);
1652         if (r < 0)
1653                 return r;
1654
1655         if (!strv_env_name_or_assignment_is_valid(minus))
1656                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment variable names or assignments");
1657
1658         r = bus_verify_set_environment_async(m, message, error);
1659         if (r < 0)
1660                 return r;
1661         if (r == 0)
1662                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1663
1664         r = manager_environment_add(m, minus, NULL);
1665         if (r < 0)
1666                 return r;
1667
1668         return sd_bus_reply_method_return(message, NULL);
1669 }
1670
1671 static int method_unset_and_set_environment(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1672         _cleanup_strv_free_ char **minus = NULL, **plus = NULL;
1673         Manager *m = userdata;
1674         int r;
1675
1676         assert(message);
1677         assert(m);
1678
1679         r = mac_selinux_access_check(message, "reload", error);
1680         if (r < 0)
1681                 return r;
1682
1683         r = sd_bus_message_read_strv(message, &minus);
1684         if (r < 0)
1685                 return r;
1686
1687         r = sd_bus_message_read_strv(message, &plus);
1688         if (r < 0)
1689                 return r;
1690
1691         if (!strv_env_name_or_assignment_is_valid(minus))
1692                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment variable names or assignments");
1693         if (!strv_env_is_valid(plus))
1694                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment assignments");
1695
1696         r = bus_verify_set_environment_async(m, message, error);
1697         if (r < 0)
1698                 return r;
1699         if (r == 0)
1700                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1701
1702         r = manager_environment_add(m, minus, plus);
1703         if (r < 0)
1704                 return r;
1705
1706         return sd_bus_reply_method_return(message, NULL);
1707 }
1708
1709 static int method_set_exit_code(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1710         Manager *m = userdata;
1711         uint8_t code;
1712         int r;
1713
1714         assert(message);
1715         assert(m);
1716
1717         r = mac_selinux_access_check(message, "exit", error);
1718         if (r < 0)
1719                 return r;
1720
1721         r = sd_bus_message_read_basic(message, 'y', &code);
1722         if (r < 0)
1723                 return r;
1724
1725         if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0)
1726                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "ExitCode can only be set for user service managers or in containers.");
1727
1728         m->return_value = code;
1729
1730         return sd_bus_reply_method_return(message, NULL);
1731 }
1732
1733 static int method_lookup_dynamic_user_by_name(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1734         Manager *m = userdata;
1735         const char *name;
1736         uid_t uid;
1737         int r;
1738
1739         assert(message);
1740         assert(m);
1741
1742         r = sd_bus_message_read_basic(message, 's', &name);
1743         if (r < 0)
1744                 return r;
1745
1746         if (!MANAGER_IS_SYSTEM(m))
1747                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Dynamic users are only supported in the system instance.");
1748         if (!valid_user_group_name(name))
1749                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "User name invalid: %s", name);
1750
1751         r = dynamic_user_lookup_name(m, name, &uid);
1752         if (r == -ESRCH)
1753                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_DYNAMIC_USER, "Dynamic user %s does not exist.", name);
1754         if (r < 0)
1755                 return r;
1756
1757         return sd_bus_reply_method_return(message, "u", (uint32_t) uid);
1758 }
1759
1760 static int method_lookup_dynamic_user_by_uid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1761         _cleanup_free_ char *name = NULL;
1762         Manager *m = userdata;
1763         uid_t uid;
1764         int r;
1765
1766         assert(message);
1767         assert(m);
1768
1769         assert_cc(sizeof(uid) == sizeof(uint32_t));
1770         r = sd_bus_message_read_basic(message, 'u', &uid);
1771         if (r < 0)
1772                 return r;
1773
1774         if (!MANAGER_IS_SYSTEM(m))
1775                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Dynamic users are only supported in the system instance.");
1776         if (!uid_is_valid(uid))
1777                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "User ID invalid: " UID_FMT, uid);
1778
1779         r = dynamic_user_lookup_uid(m, uid, &name);
1780         if (r == -ESRCH)
1781                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_DYNAMIC_USER, "Dynamic user ID " UID_FMT " does not exist.", uid);
1782         if (r < 0)
1783                 return r;
1784
1785         return sd_bus_reply_method_return(message, "s", name);
1786 }
1787
1788 static int method_get_dynamic_users(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1789         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1790         Manager *m = userdata;
1791         DynamicUser *d;
1792         Iterator i;
1793         int r;
1794
1795         assert(message);
1796         assert(m);
1797
1798         assert_cc(sizeof(uid_t) == sizeof(uint32_t));
1799
1800         if (!MANAGER_IS_SYSTEM(m))
1801                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Dynamic users are only supported in the system instance.");
1802
1803         r = sd_bus_message_new_method_return(message, &reply);
1804         if (r < 0)
1805                 return r;
1806
1807         r = sd_bus_message_open_container(reply, 'a', "(us)");
1808         if (r < 0)
1809                 return r;
1810
1811         HASHMAP_FOREACH(d, m->dynamic_users, i) {
1812                 uid_t uid;
1813
1814                 r = dynamic_user_current(d, &uid);
1815                 if (r == -EAGAIN) /* not realized yet? */
1816                         continue;
1817                 if (r < 0)
1818                         return sd_bus_error_setf(error, SD_BUS_ERROR_FAILED, "Failed to lookup a dynamic user.");
1819
1820                 r = sd_bus_message_append(reply, "(us)", uid, d->name);
1821                 if (r < 0)
1822                         return r;
1823         }
1824
1825         r = sd_bus_message_close_container(reply);
1826         if (r < 0)
1827                 return r;
1828
1829         return sd_bus_send(NULL, reply, NULL);
1830 }
1831
1832 static int list_unit_files_by_patterns(sd_bus_message *message, void *userdata, sd_bus_error *error, char **states, char **patterns) {
1833         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1834         Manager *m = userdata;
1835         UnitFileList *item;
1836         Hashmap *h;
1837         Iterator i;
1838         int r;
1839
1840         assert(message);
1841         assert(m);
1842
1843         /* Anyone can call this method */
1844
1845         r = mac_selinux_access_check(message, "status", error);
1846         if (r < 0)
1847                 return r;
1848
1849         r = sd_bus_message_new_method_return(message, &reply);
1850         if (r < 0)
1851                 return r;
1852
1853         h = hashmap_new(&string_hash_ops);
1854         if (!h)
1855                 return -ENOMEM;
1856
1857         r = unit_file_get_list(m->unit_file_scope, NULL, h, states, patterns);
1858         if (r < 0)
1859                 goto fail;
1860
1861         r = sd_bus_message_open_container(reply, 'a', "(ss)");
1862         if (r < 0)
1863                 goto fail;
1864
1865         HASHMAP_FOREACH(item, h, i) {
1866
1867                 r = sd_bus_message_append(reply, "(ss)", item->path, unit_file_state_to_string(item->state));
1868                 if (r < 0)
1869                         goto fail;
1870         }
1871
1872         unit_file_list_free(h);
1873
1874         r = sd_bus_message_close_container(reply);
1875         if (r < 0)
1876                 return r;
1877
1878         return sd_bus_send(NULL, reply, NULL);
1879
1880 fail:
1881         unit_file_list_free(h);
1882         return r;
1883 }
1884
1885 static int method_list_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1886         return list_unit_files_by_patterns(message, userdata, error, NULL, NULL);
1887 }
1888
1889 static int method_list_unit_files_by_patterns(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1890         _cleanup_strv_free_ char **states = NULL;
1891         _cleanup_strv_free_ char **patterns = NULL;
1892         int r;
1893
1894         r = sd_bus_message_read_strv(message, &states);
1895         if (r < 0)
1896                 return r;
1897
1898         r = sd_bus_message_read_strv(message, &patterns);
1899         if (r < 0)
1900                 return r;
1901
1902         return list_unit_files_by_patterns(message, userdata, error, states, patterns);
1903 }
1904
1905 static int method_get_unit_file_state(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1906         Manager *m = userdata;
1907         const char *name;
1908         UnitFileState state;
1909         int r;
1910
1911         assert(message);
1912         assert(m);
1913
1914         /* Anyone can call this method */
1915
1916         r = mac_selinux_access_check(message, "status", error);
1917         if (r < 0)
1918                 return r;
1919
1920         r = sd_bus_message_read(message, "s", &name);
1921         if (r < 0)
1922                 return r;
1923
1924         r = unit_file_get_state(m->unit_file_scope, NULL, name, &state);
1925         if (r < 0)
1926                 return r;
1927
1928         return sd_bus_reply_method_return(message, "s", unit_file_state_to_string(state));
1929 }
1930
1931 static int method_get_default_target(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1932         _cleanup_free_ char *default_target = NULL;
1933         Manager *m = userdata;
1934         int r;
1935
1936         assert(message);
1937         assert(m);
1938
1939         /* Anyone can call this method */
1940
1941         r = mac_selinux_access_check(message, "status", error);
1942         if (r < 0)
1943                 return r;
1944
1945         r = unit_file_get_default(m->unit_file_scope, NULL, &default_target);
1946         if (r < 0)
1947                 return r;
1948
1949         return sd_bus_reply_method_return(message, "s", default_target);
1950 }
1951
1952 static int send_unit_files_changed(sd_bus *bus, void *userdata) {
1953         _cleanup_(sd_bus_message_unrefp) sd_bus_message *message = NULL;
1954         int r;
1955
1956         assert(bus);
1957
1958         r = sd_bus_message_new_signal(bus, &message, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "UnitFilesChanged");
1959         if (r < 0)
1960                 return r;
1961
1962         return sd_bus_send(bus, message, NULL);
1963 }
1964
1965 /* Create an error reply, using the error information from changes[]
1966  * if possible, and fall back to generating an error from error code c.
1967  * The error message only describes the first error.
1968  *
1969  * Coordinate with unit_file_dump_changes() in install.c.
1970  */
1971 static int install_error(
1972                 sd_bus_error *error,
1973                 int c,
1974                 UnitFileChange *changes,
1975                 unsigned n_changes) {
1976         int r;
1977         unsigned i;
1978
1979         for (i = 0; i < n_changes; i++)
1980
1981                 switch(changes[i].type) {
1982
1983                 case 0 ... INT_MAX:
1984                         continue;
1985
1986                 case -EEXIST:
1987                         if (changes[i].source)
1988                                 r = sd_bus_error_setf(error, BUS_ERROR_UNIT_EXISTS,
1989                                                       "File %s already exists and is a symlink to %s.",
1990                                                       changes[i].path, changes[i].source);
1991                         else
1992                                 r = sd_bus_error_setf(error, BUS_ERROR_UNIT_EXISTS,
1993                                                       "File %s already exists.",
1994                                                       changes[i].path);
1995                         goto found;
1996
1997                 case -ERFKILL:
1998                         r = sd_bus_error_setf(error, BUS_ERROR_UNIT_MASKED,
1999                                               "Unit file %s is masked.", changes[i].path);
2000                         goto found;
2001
2002                 case -EADDRNOTAVAIL:
2003                         r = sd_bus_error_setf(error, BUS_ERROR_UNIT_GENERATED,
2004                                               "Unit %s is transient or generated.", changes[i].path);
2005                         goto found;
2006
2007                 case -ELOOP:
2008                         r = sd_bus_error_setf(error, BUS_ERROR_UNIT_LINKED,
2009                                               "Refusing to operate on linked unit file %s", changes[i].path);
2010                         goto found;
2011
2012                 case -ENOENT:
2013                         r = sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit file %s does not exist.", changes[i].path);
2014                         goto found;
2015
2016                 default:
2017                         r = sd_bus_error_set_errnof(error, changes[i].type, "File %s: %m", changes[i].path);
2018                         goto found;
2019                 }
2020
2021         r = c < 0 ? c : -EINVAL;
2022
2023  found:
2024         unit_file_changes_free(changes, n_changes);
2025         return r;
2026 }
2027
2028 static int reply_unit_file_changes_and_free(
2029                 Manager *m,
2030                 sd_bus_message *message,
2031                 int carries_install_info,
2032                 UnitFileChange *changes,
2033                 unsigned n_changes,
2034                 sd_bus_error *error) {
2035
2036         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
2037         bool bad = false, good = false;
2038         unsigned i;
2039         int r;
2040
2041         if (unit_file_changes_have_modification(changes, n_changes)) {
2042                 r = bus_foreach_bus(m, NULL, send_unit_files_changed, NULL);
2043                 if (r < 0)
2044                         log_debug_errno(r, "Failed to send UnitFilesChanged signal: %m");
2045         }
2046
2047         r = sd_bus_message_new_method_return(message, &reply);
2048         if (r < 0)
2049                 goto fail;
2050
2051         if (carries_install_info >= 0) {
2052                 r = sd_bus_message_append(reply, "b", carries_install_info);
2053                 if (r < 0)
2054                         goto fail;
2055         }
2056
2057         r = sd_bus_message_open_container(reply, 'a', "(sss)");
2058         if (r < 0)
2059                 goto fail;
2060
2061         for (i = 0; i < n_changes; i++) {
2062
2063                 if (changes[i].type < 0) {
2064                         bad = true;
2065                         continue;
2066                 }
2067
2068                 r = sd_bus_message_append(
2069                                 reply, "(sss)",
2070                                 unit_file_change_type_to_string(changes[i].type),
2071                                 changes[i].path,
2072                                 changes[i].source);
2073                 if (r < 0)
2074                         goto fail;
2075
2076                 good = true;
2077         }
2078
2079         /* If there was a failed change, and no successful change, then return the first failure as proper method call
2080          * error. */
2081         if (bad && !good)
2082                 return install_error(error, 0, changes, n_changes);
2083
2084         r = sd_bus_message_close_container(reply);
2085         if (r < 0)
2086                 goto fail;
2087
2088         unit_file_changes_free(changes, n_changes);
2089         return sd_bus_send(NULL, reply, NULL);
2090
2091 fail:
2092         unit_file_changes_free(changes, n_changes);
2093         return r;
2094 }
2095
2096 static int method_enable_unit_files_generic(
2097                 sd_bus_message *message,
2098                 Manager *m,
2099                 int (*call)(UnitFileScope scope, UnitFileFlags flags, const char *root_dir, char *files[], UnitFileChange **changes, unsigned *n_changes),
2100                 bool carries_install_info,
2101                 sd_bus_error *error) {
2102
2103         _cleanup_strv_free_ char **l = NULL;
2104         UnitFileChange *changes = NULL;
2105         unsigned n_changes = 0;
2106         UnitFileFlags flags;
2107         int runtime, force, r;
2108
2109         assert(message);
2110         assert(m);
2111
2112         r = sd_bus_message_read_strv(message, &l);
2113         if (r < 0)
2114                 return r;
2115
2116         r = sd_bus_message_read(message, "bb", &runtime, &force);
2117         if (r < 0)
2118                 return r;
2119
2120         flags = unit_file_bools_to_flags(runtime, force);
2121
2122         r = bus_verify_manage_unit_files_async(m, message, error);
2123         if (r < 0)
2124                 return r;
2125         if (r == 0)
2126                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2127
2128         r = call(m->unit_file_scope, flags, NULL, l, &changes, &n_changes);
2129         if (r < 0)
2130                 return install_error(error, r, changes, n_changes);
2131
2132         return reply_unit_file_changes_and_free(m, message, carries_install_info ? r : -1, changes, n_changes, error);
2133 }
2134
2135 static int method_enable_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2136         return method_enable_unit_files_generic(message, userdata, unit_file_enable, true, error);
2137 }
2138
2139 static int method_reenable_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2140         return method_enable_unit_files_generic(message, userdata, unit_file_reenable, true, error);
2141 }
2142
2143 static int method_link_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2144         return method_enable_unit_files_generic(message, userdata, unit_file_link, false, error);
2145 }
2146
2147 static int unit_file_preset_without_mode(UnitFileScope scope, UnitFileFlags flags, const char *root_dir, char **files, UnitFileChange **changes, unsigned *n_changes) {
2148         return unit_file_preset(scope, flags, root_dir, files, UNIT_FILE_PRESET_FULL, changes, n_changes);
2149 }
2150
2151 static int method_preset_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2152         return method_enable_unit_files_generic(message, userdata, unit_file_preset_without_mode, true, error);
2153 }
2154
2155 static int method_mask_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2156         return method_enable_unit_files_generic(message, userdata, unit_file_mask, false, error);
2157 }
2158
2159 static int method_preset_unit_files_with_mode(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2160
2161         _cleanup_strv_free_ char **l = NULL;
2162         UnitFileChange *changes = NULL;
2163         unsigned n_changes = 0;
2164         Manager *m = userdata;
2165         UnitFilePresetMode mm;
2166         int runtime, force, r;
2167         UnitFileFlags flags;
2168         const char *mode;
2169
2170         assert(message);
2171         assert(m);
2172
2173         r = sd_bus_message_read_strv(message, &l);
2174         if (r < 0)
2175                 return r;
2176
2177         r = sd_bus_message_read(message, "sbb", &mode, &runtime, &force);
2178         if (r < 0)
2179                 return r;
2180
2181         flags = unit_file_bools_to_flags(runtime, force);
2182
2183         if (isempty(mode))
2184                 mm = UNIT_FILE_PRESET_FULL;
2185         else {
2186                 mm = unit_file_preset_mode_from_string(mode);
2187                 if (mm < 0)
2188                         return -EINVAL;
2189         }
2190
2191         r = bus_verify_manage_unit_files_async(m, message, error);
2192         if (r < 0)
2193                 return r;
2194         if (r == 0)
2195                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2196
2197         r = unit_file_preset(m->unit_file_scope, flags, NULL, l, mm, &changes, &n_changes);
2198         if (r < 0)
2199                 return install_error(error, r, changes, n_changes);
2200
2201         return reply_unit_file_changes_and_free(m, message, r, changes, n_changes, error);
2202 }
2203
2204 static int method_disable_unit_files_generic(
2205                 sd_bus_message *message,
2206                 Manager *m,
2207                 int (*call)(UnitFileScope scope, UnitFileFlags flags, const char *root_dir, char *files[], UnitFileChange **changes, unsigned *n_changes),
2208                 sd_bus_error *error) {
2209
2210         _cleanup_strv_free_ char **l = NULL;
2211         UnitFileChange *changes = NULL;
2212         unsigned n_changes = 0;
2213         int r, runtime;
2214
2215         assert(message);
2216         assert(m);
2217
2218         r = sd_bus_message_read_strv(message, &l);
2219         if (r < 0)
2220                 return r;
2221
2222         r = sd_bus_message_read(message, "b", &runtime);
2223         if (r < 0)
2224                 return r;
2225
2226         r = bus_verify_manage_unit_files_async(m, message, error);
2227         if (r < 0)
2228                 return r;
2229         if (r == 0)
2230                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2231
2232         r = call(m->unit_file_scope, runtime ? UNIT_FILE_RUNTIME : 0, NULL, l, &changes, &n_changes);
2233         if (r < 0)
2234                 return install_error(error, r, changes, n_changes);
2235
2236         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2237 }
2238
2239 static int method_disable_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2240         return method_disable_unit_files_generic(message, userdata, unit_file_disable, error);
2241 }
2242
2243 static int method_unmask_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2244         return method_disable_unit_files_generic(message, userdata, unit_file_unmask, error);
2245 }
2246
2247 static int method_revert_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2248         _cleanup_strv_free_ char **l = NULL;
2249         UnitFileChange *changes = NULL;
2250         unsigned n_changes = 0;
2251         Manager *m = userdata;
2252         int r;
2253
2254         assert(message);
2255         assert(m);
2256
2257         r = sd_bus_message_read_strv(message, &l);
2258         if (r < 0)
2259                 return r;
2260
2261         r = bus_verify_manage_unit_files_async(m, message, error);
2262         if (r < 0)
2263                 return r;
2264         if (r == 0)
2265                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2266
2267         r = unit_file_revert(m->unit_file_scope, NULL, l, &changes, &n_changes);
2268         if (r < 0)
2269                 return install_error(error, r, changes, n_changes);
2270
2271         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2272 }
2273
2274 static int method_set_default_target(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2275         UnitFileChange *changes = NULL;
2276         unsigned n_changes = 0;
2277         Manager *m = userdata;
2278         const char *name;
2279         int force, r;
2280
2281         assert(message);
2282         assert(m);
2283
2284         r = mac_selinux_access_check(message, "enable", error);
2285         if (r < 0)
2286                 return r;
2287
2288         r = sd_bus_message_read(message, "sb", &name, &force);
2289         if (r < 0)
2290                 return r;
2291
2292         r = bus_verify_manage_unit_files_async(m, message, error);
2293         if (r < 0)
2294                 return r;
2295         if (r == 0)
2296                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2297
2298         r = unit_file_set_default(m->unit_file_scope, force ? UNIT_FILE_FORCE : 0, NULL, name, &changes, &n_changes);
2299         if (r < 0)
2300                 return install_error(error, r, changes, n_changes);
2301
2302         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2303 }
2304
2305 static int method_preset_all_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2306         UnitFileChange *changes = NULL;
2307         unsigned n_changes = 0;
2308         Manager *m = userdata;
2309         UnitFilePresetMode mm;
2310         const char *mode;
2311         UnitFileFlags flags;
2312         int force, runtime, r;
2313
2314         assert(message);
2315         assert(m);
2316
2317         r = mac_selinux_access_check(message, "enable", error);
2318         if (r < 0)
2319                 return r;
2320
2321         r = sd_bus_message_read(message, "sbb", &mode, &runtime, &force);
2322         if (r < 0)
2323                 return r;
2324
2325         flags = unit_file_bools_to_flags(runtime, force);
2326
2327         if (isempty(mode))
2328                 mm = UNIT_FILE_PRESET_FULL;
2329         else {
2330                 mm = unit_file_preset_mode_from_string(mode);
2331                 if (mm < 0)
2332                         return -EINVAL;
2333         }
2334
2335         r = bus_verify_manage_unit_files_async(m, message, error);
2336         if (r < 0)
2337                 return r;
2338         if (r == 0)
2339                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2340
2341         r = unit_file_preset_all(m->unit_file_scope, flags, NULL, mm, &changes, &n_changes);
2342         if (r < 0)
2343                 return install_error(error, r, changes, n_changes);
2344
2345         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2346 }
2347
2348 static int method_add_dependency_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2349         _cleanup_strv_free_ char **l = NULL;
2350         Manager *m = userdata;
2351         UnitFileChange *changes = NULL;
2352         unsigned n_changes = 0;
2353         int runtime, force, r;
2354         char *target, *type;
2355         UnitDependency dep;
2356         UnitFileFlags flags;
2357
2358         assert(message);
2359         assert(m);
2360
2361         r = bus_verify_manage_unit_files_async(m, message, error);
2362         if (r < 0)
2363                 return r;
2364         if (r == 0)
2365                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2366
2367         r = sd_bus_message_read_strv(message, &l);
2368         if (r < 0)
2369                 return r;
2370
2371         r = sd_bus_message_read(message, "ssbb", &target, &type, &runtime, &force);
2372         if (r < 0)
2373                 return r;
2374
2375         flags = unit_file_bools_to_flags(runtime, force);
2376
2377         dep = unit_dependency_from_string(type);
2378         if (dep < 0)
2379                 return -EINVAL;
2380
2381         r = unit_file_add_dependency(m->unit_file_scope, flags, NULL, l, target, dep, &changes, &n_changes);
2382         if (r < 0)
2383                 return install_error(error, r, changes, n_changes);
2384
2385         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2386 }
2387
2388 static int method_get_unit_file_links(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2389         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
2390         UnitFileChange *changes = NULL;
2391         unsigned n_changes = 0, i;
2392         UnitFileFlags flags;
2393         const char *name;
2394         char **p;
2395         int runtime, r;
2396
2397         r = sd_bus_message_read(message, "sb", &name, &runtime);
2398         if (r < 0)
2399                 return r;
2400
2401         r = sd_bus_message_new_method_return(message, &reply);
2402         if (r < 0)
2403                 return r;
2404
2405         r = sd_bus_message_open_container(reply, SD_BUS_TYPE_ARRAY, "s");
2406         if (r < 0)
2407                 return r;
2408
2409         p = STRV_MAKE(name);
2410         flags = UNIT_FILE_DRY_RUN |
2411                 (runtime ? UNIT_FILE_RUNTIME : 0);
2412
2413         r = unit_file_disable(UNIT_FILE_SYSTEM, flags, NULL, p, &changes, &n_changes);
2414         if (r < 0)
2415                 return log_error_errno(r, "Failed to get file links for %s: %m", name);
2416
2417         for (i = 0; i < n_changes; i++)
2418                 if (changes[i].type == UNIT_FILE_UNLINK) {
2419                         r = sd_bus_message_append(reply, "s", changes[i].path);
2420                         if (r < 0)
2421                                 return r;
2422                 }
2423
2424         r = sd_bus_message_close_container(reply);
2425         if (r < 0)
2426                 return r;
2427
2428         return sd_bus_send(NULL, reply, NULL);
2429 }
2430
2431 static int method_get_job_waiting(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2432         Manager *m = userdata;
2433         uint32_t id;
2434         Job *j;
2435         int r;
2436
2437         assert(message);
2438         assert(m);
2439
2440         r = sd_bus_message_read(message, "u", &id);
2441         if (r < 0)
2442                 return r;
2443
2444         j = manager_get_job(m, id);
2445         if (!j)
2446                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
2447
2448         return bus_job_method_get_waiting_jobs(message, j, error);
2449 }
2450
2451 const sd_bus_vtable bus_manager_vtable[] = {
2452         SD_BUS_VTABLE_START(0),
2453
2454         SD_BUS_PROPERTY("Version", "s", property_get_version, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2455         SD_BUS_PROPERTY("Features", "s", property_get_features, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2456         SD_BUS_PROPERTY("Virtualization", "s", property_get_virtualization, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2457         SD_BUS_PROPERTY("Architecture", "s", property_get_architecture, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2458         SD_BUS_PROPERTY("Tainted", "s", property_get_tainted, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2459         BUS_PROPERTY_DUAL_TIMESTAMP("FirmwareTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_FIRMWARE]), SD_BUS_VTABLE_PROPERTY_CONST),
2460         BUS_PROPERTY_DUAL_TIMESTAMP("LoaderTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_LOADER]), SD_BUS_VTABLE_PROPERTY_CONST),
2461         BUS_PROPERTY_DUAL_TIMESTAMP("KernelTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_KERNEL]), SD_BUS_VTABLE_PROPERTY_CONST),
2462         BUS_PROPERTY_DUAL_TIMESTAMP("InitRDTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_INITRD]), SD_BUS_VTABLE_PROPERTY_CONST),
2463         BUS_PROPERTY_DUAL_TIMESTAMP("UserspaceTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_USERSPACE]), SD_BUS_VTABLE_PROPERTY_CONST),
2464         BUS_PROPERTY_DUAL_TIMESTAMP("FinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2465         BUS_PROPERTY_DUAL_TIMESTAMP("SecurityStartTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_SECURITY_START]), SD_BUS_VTABLE_PROPERTY_CONST),
2466         BUS_PROPERTY_DUAL_TIMESTAMP("SecurityFinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_SECURITY_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2467         BUS_PROPERTY_DUAL_TIMESTAMP("GeneratorsStartTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_GENERATORS_START]), SD_BUS_VTABLE_PROPERTY_CONST),
2468         BUS_PROPERTY_DUAL_TIMESTAMP("GeneratorsFinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_GENERATORS_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2469         BUS_PROPERTY_DUAL_TIMESTAMP("UnitsLoadStartTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_UNITS_LOAD_START]), SD_BUS_VTABLE_PROPERTY_CONST),
2470         BUS_PROPERTY_DUAL_TIMESTAMP("UnitsLoadFinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_UNITS_LOAD_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2471         SD_BUS_WRITABLE_PROPERTY("LogLevel", "s", property_get_log_level, property_set_log_level, 0, 0),
2472         SD_BUS_WRITABLE_PROPERTY("LogTarget", "s", property_get_log_target, property_set_log_target, 0, 0),
2473         SD_BUS_PROPERTY("NNames", "u", property_get_n_names, 0, 0),
2474         SD_BUS_PROPERTY("NFailedUnits", "u", property_get_n_failed_units, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
2475         SD_BUS_PROPERTY("NJobs", "u", property_get_n_jobs, 0, 0),
2476         SD_BUS_PROPERTY("NInstalledJobs", "u", bus_property_get_unsigned, offsetof(Manager, n_installed_jobs), 0),
2477         SD_BUS_PROPERTY("NFailedJobs", "u", bus_property_get_unsigned, offsetof(Manager, n_failed_jobs), 0),
2478         SD_BUS_PROPERTY("Progress", "d", property_get_progress, 0, 0),
2479         SD_BUS_PROPERTY("Environment", "as", NULL, offsetof(Manager, environment), 0),
2480         SD_BUS_PROPERTY("ConfirmSpawn", "b", bus_property_get_bool, offsetof(Manager, confirm_spawn), SD_BUS_VTABLE_PROPERTY_CONST),
2481         SD_BUS_PROPERTY("ShowStatus", "b", bus_property_get_bool, offsetof(Manager, show_status), SD_BUS_VTABLE_PROPERTY_CONST),
2482         SD_BUS_PROPERTY("UnitPath", "as", NULL, offsetof(Manager, lookup_paths.search_path), SD_BUS_VTABLE_PROPERTY_CONST),
2483         SD_BUS_PROPERTY("DefaultStandardOutput", "s", bus_property_get_exec_output, offsetof(Manager, default_std_output), SD_BUS_VTABLE_PROPERTY_CONST),
2484         SD_BUS_PROPERTY("DefaultStandardError", "s", bus_property_get_exec_output, offsetof(Manager, default_std_output), SD_BUS_VTABLE_PROPERTY_CONST),
2485         SD_BUS_WRITABLE_PROPERTY("RuntimeWatchdogUSec", "t", bus_property_get_usec, property_set_runtime_watchdog, offsetof(Manager, runtime_watchdog), 0),
2486         SD_BUS_WRITABLE_PROPERTY("ShutdownWatchdogUSec", "t", bus_property_get_usec, bus_property_set_usec, offsetof(Manager, shutdown_watchdog), 0),
2487         SD_BUS_WRITABLE_PROPERTY("ServiceWatchdogs", "b", bus_property_get_bool, bus_property_set_bool, offsetof(Manager, service_watchdogs), 0),
2488         SD_BUS_PROPERTY("ControlGroup", "s", NULL, offsetof(Manager, cgroup_root), 0),
2489         SD_BUS_PROPERTY("SystemState", "s", property_get_system_state, 0, 0),
2490         SD_BUS_PROPERTY("ExitCode", "y", bus_property_get_unsigned, offsetof(Manager, return_value), 0),
2491         SD_BUS_PROPERTY("DefaultTimerAccuracyUSec", "t", bus_property_get_usec, offsetof(Manager, default_timer_accuracy_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2492         SD_BUS_PROPERTY("DefaultTimeoutStartUSec", "t", bus_property_get_usec, offsetof(Manager, default_timeout_start_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2493         SD_BUS_PROPERTY("DefaultTimeoutStopUSec", "t", bus_property_get_usec, offsetof(Manager, default_timeout_stop_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2494         SD_BUS_PROPERTY("DefaultRestartUSec", "t", bus_property_get_usec, offsetof(Manager, default_restart_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2495         SD_BUS_PROPERTY("DefaultStartLimitIntervalUSec", "t", bus_property_get_usec, offsetof(Manager, default_start_limit_interval), SD_BUS_VTABLE_PROPERTY_CONST),
2496         /* The following two items are obsolete alias */
2497         SD_BUS_PROPERTY("DefaultStartLimitIntervalSec", "t", bus_property_get_usec, offsetof(Manager, default_start_limit_interval), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
2498         SD_BUS_PROPERTY("DefaultStartLimitInterval", "t", bus_property_get_usec, offsetof(Manager, default_start_limit_interval), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
2499         SD_BUS_PROPERTY("DefaultStartLimitBurst", "u", bus_property_get_unsigned, offsetof(Manager, default_start_limit_burst), SD_BUS_VTABLE_PROPERTY_CONST),
2500         SD_BUS_PROPERTY("DefaultCPUAccounting", "b", bus_property_get_bool, offsetof(Manager, default_cpu_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
2501         SD_BUS_PROPERTY("DefaultBlockIOAccounting", "b", bus_property_get_bool, offsetof(Manager, default_blockio_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
2502         SD_BUS_PROPERTY("DefaultMemoryAccounting", "b", bus_property_get_bool, offsetof(Manager, default_memory_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
2503         SD_BUS_PROPERTY("DefaultTasksAccounting", "b", bus_property_get_bool, offsetof(Manager, default_tasks_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
2504         SD_BUS_PROPERTY("DefaultLimitCPU", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CPU]), SD_BUS_VTABLE_PROPERTY_CONST),
2505         SD_BUS_PROPERTY("DefaultLimitCPUSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CPU]), SD_BUS_VTABLE_PROPERTY_CONST),
2506         SD_BUS_PROPERTY("DefaultLimitFSIZE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_FSIZE]), SD_BUS_VTABLE_PROPERTY_CONST),
2507         SD_BUS_PROPERTY("DefaultLimitFSIZESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_FSIZE]), SD_BUS_VTABLE_PROPERTY_CONST),
2508         SD_BUS_PROPERTY("DefaultLimitDATA", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_DATA]), SD_BUS_VTABLE_PROPERTY_CONST),
2509         SD_BUS_PROPERTY("DefaultLimitDATASoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_DATA]), SD_BUS_VTABLE_PROPERTY_CONST),
2510         SD_BUS_PROPERTY("DefaultLimitSTACK", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_STACK]), SD_BUS_VTABLE_PROPERTY_CONST),
2511         SD_BUS_PROPERTY("DefaultLimitSTACKSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_STACK]), SD_BUS_VTABLE_PROPERTY_CONST),
2512         SD_BUS_PROPERTY("DefaultLimitCORE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CORE]), SD_BUS_VTABLE_PROPERTY_CONST),
2513         SD_BUS_PROPERTY("DefaultLimitCORESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CORE]), SD_BUS_VTABLE_PROPERTY_CONST),
2514         SD_BUS_PROPERTY("DefaultLimitRSS", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RSS]), SD_BUS_VTABLE_PROPERTY_CONST),
2515         SD_BUS_PROPERTY("DefaultLimitRSSSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RSS]), SD_BUS_VTABLE_PROPERTY_CONST),
2516         SD_BUS_PROPERTY("DefaultLimitNOFILE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NOFILE]), SD_BUS_VTABLE_PROPERTY_CONST),
2517         SD_BUS_PROPERTY("DefaultLimitNOFILESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NOFILE]), SD_BUS_VTABLE_PROPERTY_CONST),
2518         SD_BUS_PROPERTY("DefaultLimitAS", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_AS]), SD_BUS_VTABLE_PROPERTY_CONST),
2519         SD_BUS_PROPERTY("DefaultLimitASSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_AS]), SD_BUS_VTABLE_PROPERTY_CONST),
2520         SD_BUS_PROPERTY("DefaultLimitNPROC", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NPROC]), SD_BUS_VTABLE_PROPERTY_CONST),
2521         SD_BUS_PROPERTY("DefaultLimitNPROCSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NPROC]), SD_BUS_VTABLE_PROPERTY_CONST),
2522         SD_BUS_PROPERTY("DefaultLimitMEMLOCK", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MEMLOCK]), SD_BUS_VTABLE_PROPERTY_CONST),
2523         SD_BUS_PROPERTY("DefaultLimitMEMLOCKSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MEMLOCK]), SD_BUS_VTABLE_PROPERTY_CONST),
2524         SD_BUS_PROPERTY("DefaultLimitLOCKS", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_LOCKS]), SD_BUS_VTABLE_PROPERTY_CONST),
2525         SD_BUS_PROPERTY("DefaultLimitLOCKSSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_LOCKS]), SD_BUS_VTABLE_PROPERTY_CONST),
2526         SD_BUS_PROPERTY("DefaultLimitSIGPENDING", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_SIGPENDING]), SD_BUS_VTABLE_PROPERTY_CONST),
2527         SD_BUS_PROPERTY("DefaultLimitSIGPENDINGSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_SIGPENDING]), SD_BUS_VTABLE_PROPERTY_CONST),
2528         SD_BUS_PROPERTY("DefaultLimitMSGQUEUE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MSGQUEUE]), SD_BUS_VTABLE_PROPERTY_CONST),
2529         SD_BUS_PROPERTY("DefaultLimitMSGQUEUESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MSGQUEUE]), SD_BUS_VTABLE_PROPERTY_CONST),
2530         SD_BUS_PROPERTY("DefaultLimitNICE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NICE]), SD_BUS_VTABLE_PROPERTY_CONST),
2531         SD_BUS_PROPERTY("DefaultLimitNICESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NICE]), SD_BUS_VTABLE_PROPERTY_CONST),
2532         SD_BUS_PROPERTY("DefaultLimitRTPRIO", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTPRIO]), SD_BUS_VTABLE_PROPERTY_CONST),
2533         SD_BUS_PROPERTY("DefaultLimitRTPRIOSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTPRIO]), SD_BUS_VTABLE_PROPERTY_CONST),
2534         SD_BUS_PROPERTY("DefaultLimitRTTIME", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTTIME]), SD_BUS_VTABLE_PROPERTY_CONST),
2535         SD_BUS_PROPERTY("DefaultLimitRTTIMESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTTIME]), SD_BUS_VTABLE_PROPERTY_CONST),
2536         SD_BUS_PROPERTY("DefaultTasksMax", "t", NULL, offsetof(Manager, default_tasks_max), SD_BUS_VTABLE_PROPERTY_CONST),
2537         SD_BUS_PROPERTY("TimerSlackNSec", "t", property_get_timer_slack_nsec, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2538
2539         SD_BUS_METHOD("GetUnit", "s", "o", method_get_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2540         SD_BUS_METHOD("GetUnitByPID", "u", "o", method_get_unit_by_pid, SD_BUS_VTABLE_UNPRIVILEGED),
2541         SD_BUS_METHOD("GetUnitByInvocationID", "ay", "o", method_get_unit_by_invocation_id, SD_BUS_VTABLE_UNPRIVILEGED),
2542         SD_BUS_METHOD("LoadUnit", "s", "o", method_load_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2543         SD_BUS_METHOD("StartUnit", "ss", "o", method_start_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2544         SD_BUS_METHOD("StartUnitReplace", "sss", "o", method_start_unit_replace, SD_BUS_VTABLE_UNPRIVILEGED),
2545         SD_BUS_METHOD("StopUnit", "ss", "o", method_stop_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2546         SD_BUS_METHOD("ReloadUnit", "ss", "o", method_reload_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2547         SD_BUS_METHOD("RestartUnit", "ss", "o", method_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2548         SD_BUS_METHOD("TryRestartUnit", "ss", "o", method_try_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2549         SD_BUS_METHOD("ReloadOrRestartUnit", "ss", "o", method_reload_or_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2550         SD_BUS_METHOD("ReloadOrTryRestartUnit", "ss", "o", method_reload_or_try_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2551         SD_BUS_METHOD("KillUnit", "ssi", NULL, method_kill_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2552         SD_BUS_METHOD("ResetFailedUnit", "s", NULL, method_reset_failed_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2553         SD_BUS_METHOD("SetUnitProperties", "sba(sv)", NULL, method_set_unit_properties, SD_BUS_VTABLE_UNPRIVILEGED),
2554         SD_BUS_METHOD("RefUnit", "s", NULL, method_ref_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2555         SD_BUS_METHOD("UnrefUnit", "s", NULL, method_unref_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2556         SD_BUS_METHOD("StartTransientUnit", "ssa(sv)a(sa(sv))", "o", method_start_transient_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2557         SD_BUS_METHOD("GetUnitProcesses", "s", "a(sus)", method_get_unit_processes, SD_BUS_VTABLE_UNPRIVILEGED),
2558         SD_BUS_METHOD("AttachProcessesToUnit", "ssau", NULL, method_attach_processes_to_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2559         SD_BUS_METHOD("GetJob", "u", "o", method_get_job, SD_BUS_VTABLE_UNPRIVILEGED),
2560         SD_BUS_METHOD("GetJobAfter", "u", "a(usssoo)", method_get_job_waiting, SD_BUS_VTABLE_UNPRIVILEGED),
2561         SD_BUS_METHOD("GetJobBefore", "u", "a(usssoo)", method_get_job_waiting, SD_BUS_VTABLE_UNPRIVILEGED),
2562         SD_BUS_METHOD("CancelJob", "u", NULL, method_cancel_job, SD_BUS_VTABLE_UNPRIVILEGED),
2563         SD_BUS_METHOD("ClearJobs", NULL, NULL, method_clear_jobs, SD_BUS_VTABLE_UNPRIVILEGED),
2564         SD_BUS_METHOD("ResetFailed", NULL, NULL, method_reset_failed, SD_BUS_VTABLE_UNPRIVILEGED),
2565         SD_BUS_METHOD("ListUnits", NULL, "a(ssssssouso)", method_list_units, SD_BUS_VTABLE_UNPRIVILEGED),
2566         SD_BUS_METHOD("ListUnitsFiltered", "as", "a(ssssssouso)", method_list_units_filtered, SD_BUS_VTABLE_UNPRIVILEGED),
2567         SD_BUS_METHOD("ListUnitsByPatterns", "asas", "a(ssssssouso)", method_list_units_by_patterns, SD_BUS_VTABLE_UNPRIVILEGED),
2568         SD_BUS_METHOD("ListUnitsByNames", "as", "a(ssssssouso)", method_list_units_by_names, SD_BUS_VTABLE_UNPRIVILEGED),
2569         SD_BUS_METHOD("ListJobs", NULL, "a(usssoo)", method_list_jobs, SD_BUS_VTABLE_UNPRIVILEGED),
2570         SD_BUS_METHOD("Subscribe", NULL, NULL, method_subscribe, SD_BUS_VTABLE_UNPRIVILEGED),
2571         SD_BUS_METHOD("Unsubscribe", NULL, NULL, method_unsubscribe, SD_BUS_VTABLE_UNPRIVILEGED),
2572         SD_BUS_METHOD("Dump", NULL, "s", method_dump, SD_BUS_VTABLE_UNPRIVILEGED),
2573         SD_BUS_METHOD("CreateSnapshot", "sb", "o", method_refuse_snapshot, SD_BUS_VTABLE_UNPRIVILEGED),
2574         SD_BUS_METHOD("RemoveSnapshot", "s", NULL, method_refuse_snapshot, SD_BUS_VTABLE_UNPRIVILEGED),
2575         SD_BUS_METHOD("Reload", NULL, NULL, method_reload, SD_BUS_VTABLE_UNPRIVILEGED),
2576         SD_BUS_METHOD("Reexecute", NULL, NULL, method_reexecute, SD_BUS_VTABLE_UNPRIVILEGED),
2577         SD_BUS_METHOD("Exit", NULL, NULL, method_exit, 0),
2578         SD_BUS_METHOD("Reboot", NULL, NULL, method_reboot, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2579         SD_BUS_METHOD("PowerOff", NULL, NULL, method_poweroff, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2580         SD_BUS_METHOD("Halt", NULL, NULL, method_halt, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2581         SD_BUS_METHOD("KExec", NULL, NULL, method_kexec, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2582         SD_BUS_METHOD("SwitchRoot", "ss", NULL, method_switch_root, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2583         SD_BUS_METHOD("SetEnvironment", "as", NULL, method_set_environment, SD_BUS_VTABLE_UNPRIVILEGED),
2584         SD_BUS_METHOD("UnsetEnvironment", "as", NULL, method_unset_environment, SD_BUS_VTABLE_UNPRIVILEGED),
2585         SD_BUS_METHOD("UnsetAndSetEnvironment", "asas", NULL, method_unset_and_set_environment, SD_BUS_VTABLE_UNPRIVILEGED),
2586         SD_BUS_METHOD("ListUnitFiles", NULL, "a(ss)", method_list_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2587         SD_BUS_METHOD("ListUnitFilesByPatterns", "asas", "a(ss)", method_list_unit_files_by_patterns, SD_BUS_VTABLE_UNPRIVILEGED),
2588         SD_BUS_METHOD("GetUnitFileState", "s", "s", method_get_unit_file_state, SD_BUS_VTABLE_UNPRIVILEGED),
2589         SD_BUS_METHOD("EnableUnitFiles", "asbb", "ba(sss)", method_enable_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2590         SD_BUS_METHOD("DisableUnitFiles", "asb", "a(sss)", method_disable_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2591         SD_BUS_METHOD("ReenableUnitFiles", "asbb", "ba(sss)", method_reenable_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2592         SD_BUS_METHOD("LinkUnitFiles", "asbb", "a(sss)", method_link_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2593         SD_BUS_METHOD("PresetUnitFiles", "asbb", "ba(sss)", method_preset_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2594         SD_BUS_METHOD("PresetUnitFilesWithMode", "assbb", "ba(sss)", method_preset_unit_files_with_mode, SD_BUS_VTABLE_UNPRIVILEGED),
2595         SD_BUS_METHOD("MaskUnitFiles", "asbb", "a(sss)", method_mask_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2596         SD_BUS_METHOD("UnmaskUnitFiles", "asb", "a(sss)", method_unmask_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2597         SD_BUS_METHOD("RevertUnitFiles", "as", "a(sss)", method_revert_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2598         SD_BUS_METHOD("SetDefaultTarget", "sb", "a(sss)", method_set_default_target, SD_BUS_VTABLE_UNPRIVILEGED),
2599         SD_BUS_METHOD("GetDefaultTarget", NULL, "s", method_get_default_target, SD_BUS_VTABLE_UNPRIVILEGED),
2600         SD_BUS_METHOD("PresetAllUnitFiles", "sbb", "a(sss)", method_preset_all_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2601         SD_BUS_METHOD("AddDependencyUnitFiles", "asssbb", "a(sss)", method_add_dependency_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2602         SD_BUS_METHOD("GetUnitFileLinks", "sb", "as", method_get_unit_file_links, SD_BUS_VTABLE_UNPRIVILEGED),
2603         SD_BUS_METHOD("SetExitCode", "y", NULL, method_set_exit_code, SD_BUS_VTABLE_UNPRIVILEGED),
2604         SD_BUS_METHOD("LookupDynamicUserByName", "s", "u", method_lookup_dynamic_user_by_name, SD_BUS_VTABLE_UNPRIVILEGED),
2605         SD_BUS_METHOD("LookupDynamicUserByUID", "u", "s", method_lookup_dynamic_user_by_uid, SD_BUS_VTABLE_UNPRIVILEGED),
2606         SD_BUS_METHOD("GetDynamicUsers", NULL, "a(us)", method_get_dynamic_users, SD_BUS_VTABLE_UNPRIVILEGED),
2607
2608         SD_BUS_SIGNAL("UnitNew", "so", 0),
2609         SD_BUS_SIGNAL("UnitRemoved", "so", 0),
2610         SD_BUS_SIGNAL("JobNew", "uos", 0),
2611         SD_BUS_SIGNAL("JobRemoved", "uoss", 0),
2612         SD_BUS_SIGNAL("StartupFinished", "tttttt", 0),
2613         SD_BUS_SIGNAL("UnitFilesChanged", NULL, 0),
2614         SD_BUS_SIGNAL("Reloading", "b", 0),
2615
2616         SD_BUS_VTABLE_END
2617 };
2618
2619 static int send_finished(sd_bus *bus, void *userdata) {
2620         _cleanup_(sd_bus_message_unrefp) sd_bus_message *message = NULL;
2621         usec_t *times = userdata;
2622         int r;
2623
2624         assert(bus);
2625         assert(times);
2626
2627         r = sd_bus_message_new_signal(bus, &message, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "StartupFinished");
2628         if (r < 0)
2629                 return r;
2630
2631         r = sd_bus_message_append(message, "tttttt", times[0], times[1], times[2], times[3], times[4], times[5]);
2632         if (r < 0)
2633                 return r;
2634
2635         return sd_bus_send(bus, message, NULL);
2636 }
2637
2638 void bus_manager_send_finished(
2639                 Manager *m,
2640                 usec_t firmware_usec,
2641                 usec_t loader_usec,
2642                 usec_t kernel_usec,
2643                 usec_t initrd_usec,
2644                 usec_t userspace_usec,
2645                 usec_t total_usec) {
2646
2647         int r;
2648
2649         assert(m);
2650
2651         r = bus_foreach_bus(
2652                         m,
2653                         NULL,
2654                         send_finished,
2655                         (usec_t[6]) {
2656                                 firmware_usec,
2657                                 loader_usec,
2658                                 kernel_usec,
2659                                 initrd_usec,
2660                                 userspace_usec,
2661                                 total_usec
2662                         });
2663         if (r < 0)
2664                 log_debug_errno(r, "Failed to send finished signal: %m");
2665 }
2666
2667 static int send_reloading(sd_bus *bus, void *userdata) {
2668         _cleanup_(sd_bus_message_unrefp) sd_bus_message *message = NULL;
2669         int r;
2670
2671         assert(bus);
2672
2673         r = sd_bus_message_new_signal(bus, &message, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "Reloading");
2674         if (r < 0)
2675                 return r;
2676
2677         r = sd_bus_message_append(message, "b", PTR_TO_INT(userdata));
2678         if (r < 0)
2679                 return r;
2680
2681         return sd_bus_send(bus, message, NULL);
2682 }
2683
2684 void bus_manager_send_reloading(Manager *m, bool active) {
2685         int r;
2686
2687         assert(m);
2688
2689         r = bus_foreach_bus(m, NULL, send_reloading, INT_TO_PTR(active));
2690         if (r < 0)
2691                 log_debug_errno(r, "Failed to send reloading signal: %m");
2692 }
2693
2694 static int send_changed_signal(sd_bus *bus, void *userdata) {
2695         assert(bus);
2696
2697         return sd_bus_emit_properties_changed_strv(bus,
2698                                                    "/org/freedesktop/systemd1",
2699                                                    "org.freedesktop.systemd1.Manager",
2700                                                    NULL);
2701 }
2702
2703 void bus_manager_send_change_signal(Manager *m) {
2704         int r;
2705
2706         assert(m);
2707
2708         r = bus_foreach_bus(m, NULL, send_changed_signal, NULL);
2709         if (r < 0)
2710                 log_debug_errno(r, "Failed to send manager change signal: %m");
2711 }