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 BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_version, "s", PACKAGE_VERSION);
  50 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_features, "s", SYSTEMD_FEATURES);
  51 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_architecture, "s", architecture_to_string(uname_architecture()));
  52 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_log_target, "s", log_target_to_string(log_get_target()));
  53 static BUS_DEFINE_PROPERTY_GET2(property_get_system_state, "s", Manager, manager_state, manager_state_to_string);
  54 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_timer_slack_nsec, "t", (uint64_t) prctl(PR_GET_TIMERSLACK));
  55
  56 static int property_get_virtualization(
  57                 sd_bus *bus,
  58                 const char *path,
  59                 const char *interface,
  60                 const char *property,
  61                 sd_bus_message *reply,
  62                 void *userdata,
  63                 sd_bus_error *error) {
  64
  65         int v;
  66
  67         assert(bus);
  68         assert(reply);
  69
  70         v = detect_virtualization();
  71
  72         /* Make sure to return the empty string when we detect no virtualization, as that is the API.
  73          *
  74          * https://github.com/systemd/systemd/issues/1423
  75          */
  76
  77         return sd_bus_message_append(
  78                         reply, "s",
  79                         v == VIRTUALIZATION_NONE ? NULL : virtualization_to_string(v));
  80 }
  81
  82 static int property_get_tainted(
  83                 sd_bus *bus,
  84                 const char *path,
  85                 const char *interface,
  86                 const char *property,
  87                 sd_bus_message *reply,
  88                 void *userdata,
  89                 sd_bus_error *error) {
  90
  91         _cleanup_free_ char *s = NULL;
  92         Manager *m = userdata;
  93
  94         assert(bus);
  95         assert(reply);
  96         assert(m);
  97
  98         s = manager_taint_string(m);
  99         if (!s)
 100                 return log_oom();
 101
 102         return sd_bus_message_append(reply, "s", s);
 103 }
 104
 105 static int property_set_log_target(
 106                 sd_bus *bus,
 107                 const char *path,
 108                 const char *interface,
 109                 const char *property,
 110                 sd_bus_message *value,
 111                 void *userdata,
 112                 sd_bus_error *error) {
 113
 114         const char *t;
 115         int r;
 116
 117         assert(bus);
 118         assert(value);
 119
 120         r = sd_bus_message_read(value, "s", &t);
 121         if (r < 0)
 122                 return r;
 123
 124         return log_set_target_from_string(t);
 125 }
 126
 127 static int property_get_log_level(
 128                 sd_bus *bus,
 129                 const char *path,
 130                 const char *interface,
 131                 const char *property,
 132                 sd_bus_message *reply,
 133                 void *userdata,
 134                 sd_bus_error *error) {
 135
 136         _cleanup_free_ char *t = NULL;
 137         int r;
 138
 139         assert(bus);
 140         assert(reply);
 141
 142         r = log_level_to_string_alloc(log_get_max_level(), &t);
 143         if (r < 0)
 144                 return r;
 145
 146         return sd_bus_message_append(reply, "s", t);
 147 }
 148
 149 static int property_set_log_level(
 150                 sd_bus *bus,
 151                 const char *path,
 152                 const char *interface,
 153                 const char *property,
 154                 sd_bus_message *value,
 155                 void *userdata,
 156                 sd_bus_error *error) {
 157
 158         const char *t;
 159         int r;
 160
 161         assert(bus);
 162         assert(value);
 163
 164         r = sd_bus_message_read(value, "s", &t);
 165         if (r < 0)
 166                 return r;
 167
 168         r = log_set_max_level_from_string(t);
 169         if (r == 0)
 170                 log_info("Setting log level to %s.", t);
 171         return r;
 172 }
 173
 174 static int property_get_n_names(
 175                 sd_bus *bus,
 176                 const char *path,
 177                 const char *interface,
 178                 const char *property,
 179                 sd_bus_message *reply,
 180                 void *userdata,
 181                 sd_bus_error *error) {
 182
 183         Manager *m = userdata;
 184
 185         assert(bus);
 186         assert(reply);
 187         assert(m);
 188
 189         return sd_bus_message_append(reply, "u", (uint32_t) hashmap_size(m->units));
 190 }
 191
 192 static int property_get_n_failed_units(
 193                 sd_bus *bus,
 194                 const char *path,
 195                 const char *interface,
 196                 const char *property,
 197                 sd_bus_message *reply,
 198                 void *userdata,
 199                 sd_bus_error *error) {
 200
 201         Manager *m = userdata;
 202
 203         assert(bus);
 204         assert(reply);
 205         assert(m);
 206
 207         return sd_bus_message_append(reply, "u", (uint32_t) set_size(m->failed_units));
 208 }
 209
 210 static int property_get_n_jobs(
 211                 sd_bus *bus,
 212                 const char *path,
 213                 const char *interface,
 214                 const char *property,
 215                 sd_bus_message *reply,
 216                 void *userdata,
 217                 sd_bus_error *error) {
 218
 219         Manager *m = userdata;
 220
 221         assert(bus);
 222         assert(reply);
 223         assert(m);
 224
 225         return sd_bus_message_append(reply, "u", (uint32_t) hashmap_size(m->jobs));
 226 }
 227
 228 static int property_get_progress(
 229                 sd_bus *bus,
 230                 const char *path,
 231                 const char *interface,
 232                 const char *property,
 233                 sd_bus_message *reply,
 234                 void *userdata,
 235                 sd_bus_error *error) {
 236
 237         Manager *m = userdata;
 238         double d;
 239
 240         assert(bus);
 241         assert(reply);
 242         assert(m);
 243
 244         if (MANAGER_IS_FINISHED(m))
 245                 d = 1.0;
 246         else
 247                 d = 1.0 - ((double) hashmap_size(m->jobs) / (double) m->n_installed_jobs);
 248
 249         return sd_bus_message_append(reply, "d", d);
 250 }
 251
 252 static int property_set_runtime_watchdog(
 253                 sd_bus *bus,
 254                 const char *path,
 255                 const char *interface,
 256                 const char *property,
 257                 sd_bus_message *value,
 258                 void *userdata,
 259                 sd_bus_error *error) {
 260
 261         usec_t *t = userdata;
 262         int r;
 263
 264         assert(bus);
 265         assert(value);
 266
 267         assert_cc(sizeof(usec_t) == sizeof(uint64_t));
 268
 269         r = sd_bus_message_read(value, "t", t);
 270         if (r < 0)
 271                 return r;
 272
 273         return watchdog_set_timeout(t);
 274 }
 275
 276 static int bus_get_unit_by_name(Manager *m, sd_bus_message *message, const char *name, Unit **ret_unit, sd_bus_error *error) {
 277         Unit *u;
 278         int r;
 279
 280         assert(m);
 281         assert(message);
 282         assert(ret_unit);
 283
 284         /* More or less a wrapper around manager_get_unit() that generates nice errors and has one trick up its sleeve:
 285          * if the name is specified empty we use the client's unit. */
 286
 287         if (isempty(name)) {
 288                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 289                 pid_t pid;
 290
 291                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 292                 if (r < 0)
 293                         return r;
 294
 295                 r = sd_bus_creds_get_pid(creds, &pid);
 296                 if (r < 0)
 297                         return r;
 298
 299                 u = manager_get_unit_by_pid(m, pid);
 300                 if (!u)
 301                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Client not member of any unit.");
 302         } else {
 303                 u = manager_get_unit(m, name);
 304                 if (!u)
 305                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s not loaded.", name);
 306         }
 307
 308         *ret_unit = u;
 309         return 0;
 310 }
 311
 312 static int bus_load_unit_by_name(Manager *m, sd_bus_message *message, const char *name, Unit **ret_unit, sd_bus_error *error) {
 313         assert(m);
 314         assert(message);
 315         assert(ret_unit);
 316
 317         /* Pretty much the same as bus_get_unit_by_name(), but we also load the unit if necessary. */
 318
 319         if (isempty(name))
 320                 return bus_get_unit_by_name(m, message, name, ret_unit, error);
 321
 322         return manager_load_unit(m, name, NULL, error, ret_unit);
 323 }
 324
 325 static int method_get_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 326         _cleanup_free_ char *path = NULL;
 327         Manager *m = userdata;
 328         const char *name;
 329         Unit *u;
 330         int r;
 331
 332         assert(message);
 333         assert(m);
 334
 335         /* Anyone can call this method */
 336
 337         r = sd_bus_message_read(message, "s", &name);
 338         if (r < 0)
 339                 return r;
 340
 341         r = bus_get_unit_by_name(m, message, name, &u, error);
 342         if (r < 0)
 343                 return r;
 344
 345         r = mac_selinux_unit_access_check(u, message, "status", error);
 346         if (r < 0)
 347                 return r;
 348
 349         path = unit_dbus_path(u);
 350         if (!path)
 351                 return -ENOMEM;
 352
 353         return sd_bus_reply_method_return(message, "o", path);
 354 }
 355
 356 static int method_get_unit_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 357         _cleanup_free_ char *path = NULL;
 358         Manager *m = userdata;
 359         pid_t pid;
 360         Unit *u;
 361         int r;
 362
 363         assert(message);
 364         assert(m);
 365
 366         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 367
 368         /* Anyone can call this method */
 369
 370         r = sd_bus_message_read(message, "u", &pid);
 371         if (r < 0)
 372                 return r;
 373         if (pid < 0)
 374                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid PID " PID_FMT, pid);
 375
 376         if (pid == 0) {
 377                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 378
 379                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 380                 if (r < 0)
 381                         return r;
 382
 383                 r = sd_bus_creds_get_pid(creds, &pid);
 384                 if (r < 0)
 385                         return r;
 386         }
 387
 388         u = manager_get_unit_by_pid(m, pid);
 389         if (!u)
 390                 return sd_bus_error_setf(error, BUS_ERROR_NO_UNIT_FOR_PID, "PID "PID_FMT" does not belong to any loaded unit.", pid);
 391
 392         r = mac_selinux_unit_access_check(u, message, "status", error);
 393         if (r < 0)
 394                 return r;
 395
 396         path = unit_dbus_path(u);
 397         if (!path)
 398                 return -ENOMEM;
 399
 400         return sd_bus_reply_method_return(message, "o", path);
 401 }
 402
 403 static int method_get_unit_by_invocation_id(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 404         _cleanup_free_ char *path = NULL;
 405         Manager *m = userdata;
 406         sd_id128_t id;
 407         const void *a;
 408         Unit *u;
 409         size_t sz;
 410         int r;
 411
 412         assert(message);
 413         assert(m);
 414
 415         /* Anyone can call this method */
 416
 417         r = sd_bus_message_read_array(message, 'y', &a, &sz);
 418         if (r < 0)
 419                 return r;
 420         if (sz == 0)
 421                 id = SD_ID128_NULL;
 422         else if (sz == 16)
 423                 memcpy(&id, a, sz);
 424         else
 425                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid invocation ID");
 426
 427         if (sd_id128_is_null(id)) {
 428                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 429                 pid_t pid;
 430
 431                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 432                 if (r < 0)
 433                         return r;
 434
 435                 r = sd_bus_creds_get_pid(creds, &pid);
 436                 if (r < 0)
 437                         return r;
 438
 439                 u = manager_get_unit_by_pid(m, pid);
 440                 if (!u)
 441                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Client " PID_FMT " not member of any unit.", pid);
 442         } else {
 443                 u = hashmap_get(m->units_by_invocation_id, &id);
 444                 if (!u)
 445                         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));
 446         }
 447
 448         r = mac_selinux_unit_access_check(u, message, "status", error);
 449         if (r < 0)
 450                 return r;
 451
 452         /* So here's a special trick: the bus path we return actually references the unit by its invocation ID instead
 453          * of the unit name. This means it stays valid only as long as the invocation ID stays the same. */
 454         path = unit_dbus_path_invocation_id(u);
 455         if (!path)
 456                 return -ENOMEM;
 457
 458         return sd_bus_reply_method_return(message, "o", path);
 459 }
 460
 461 static int method_get_unit_by_control_group(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 462         _cleanup_free_ char *path = NULL;
 463         Manager *m = userdata;
 464         const char *cgroup;
 465         Unit *u;
 466         int r;
 467
 468         r = sd_bus_message_read(message, "s", &cgroup);
 469         if (r < 0)
 470                 return r;
 471
 472         u = manager_get_unit_by_cgroup(m, cgroup);
 473         if (!u)
 474                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Control group '%s' is not valid or not managed by this instance", cgroup);
 475
 476         r = mac_selinux_unit_access_check(u, message, "status", error);
 477         if (r < 0)
 478                 return r;
 479
 480         path = unit_dbus_path(u);
 481         if (!path)
 482                 return -ENOMEM;
 483
 484         return sd_bus_reply_method_return(message, "o", path);
 485 }
 486
 487 static int method_load_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 488         _cleanup_free_ char *path = NULL;
 489         Manager *m = userdata;
 490         const char *name;
 491         Unit *u;
 492         int r;
 493
 494         assert(message);
 495         assert(m);
 496
 497         /* Anyone can call this method */
 498
 499         r = sd_bus_message_read(message, "s", &name);
 500         if (r < 0)
 501                 return r;
 502
 503         r = bus_load_unit_by_name(m, message, name, &u, error);
 504         if (r < 0)
 505                 return r;
 506
 507         r = mac_selinux_unit_access_check(u, message, "status", error);
 508         if (r < 0)
 509                 return r;
 510
 511         path = unit_dbus_path(u);
 512         if (!path)
 513                 return -ENOMEM;
 514
 515         return sd_bus_reply_method_return(message, "o", path);
 516 }
 517
 518 static int method_start_unit_generic(sd_bus_message *message, Manager *m, JobType job_type, bool reload_if_possible, sd_bus_error *error) {
 519         const char *name;
 520         Unit *u;
 521         int r;
 522
 523         assert(message);
 524         assert(m);
 525
 526         r = sd_bus_message_read(message, "s", &name);
 527         if (r < 0)
 528                 return r;
 529
 530         r = manager_load_unit(m, name, NULL, error, &u);
 531         if (r < 0)
 532                 return r;
 533
 534         return bus_unit_method_start_generic(message, u, job_type, reload_if_possible, error);
 535 }
 536
 537 static int method_start_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 538         return method_start_unit_generic(message, userdata, JOB_START, false, error);
 539 }
 540
 541 static int method_stop_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 542         return method_start_unit_generic(message, userdata, JOB_STOP, false, error);
 543 }
 544
 545 static int method_reload_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 546         return method_start_unit_generic(message, userdata, JOB_RELOAD, false, error);
 547 }
 548
 549 static int method_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 550         return method_start_unit_generic(message, userdata, JOB_RESTART, false, error);
 551 }
 552
 553 static int method_try_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 554         return method_start_unit_generic(message, userdata, JOB_TRY_RESTART, false, error);
 555 }
 556
 557 static int method_reload_or_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 558         return method_start_unit_generic(message, userdata, JOB_RESTART, true, error);
 559 }
 560
 561 static int method_reload_or_try_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 562         return method_start_unit_generic(message, userdata, JOB_TRY_RESTART, true, error);
 563 }
 564
 565 static int method_start_unit_replace(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 566         Manager *m = userdata;
 567         const char *old_name;
 568         Unit *u;
 569         int r;
 570
 571         assert(message);
 572         assert(m);
 573
 574         r = sd_bus_message_read(message, "s", &old_name);
 575         if (r < 0)
 576                 return r;
 577
 578         r = bus_get_unit_by_name(m, message, old_name, &u, error);
 579         if (r < 0)
 580                 return r;
 581         if (!u->job || u->job->type != JOB_START)
 582                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "No job queued for unit %s", old_name);
 583
 584         return method_start_unit_generic(message, m, JOB_START, false, error);
 585 }
 586
 587 static int method_kill_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 588         Manager *m = userdata;
 589         const char *name;
 590         Unit *u;
 591         int r;
 592
 593         assert(message);
 594         assert(m);
 595
 596         r = sd_bus_message_read(message, "s", &name);
 597         if (r < 0)
 598                 return r;
 599
 600         r = bus_get_unit_by_name(m, message, name, &u, error);
 601         if (r < 0)
 602                 return r;
 603
 604         return bus_unit_method_kill(message, u, error);
 605 }
 606
 607 static int method_reset_failed_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 608         Manager *m = userdata;
 609         const char *name;
 610         Unit *u;
 611         int r;
 612
 613         assert(message);
 614         assert(m);
 615
 616         r = sd_bus_message_read(message, "s", &name);
 617         if (r < 0)
 618                 return r;
 619
 620         r = bus_get_unit_by_name(m, message, name, &u, error);
 621         if (r < 0)
 622                 return r;
 623
 624         return bus_unit_method_reset_failed(message, u, error);
 625 }
 626
 627 static int method_set_unit_properties(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 628         Manager *m = userdata;
 629         const char *name;
 630         Unit *u;
 631         int r;
 632
 633         assert(message);
 634         assert(m);
 635
 636         r = sd_bus_message_read(message, "s", &name);
 637         if (r < 0)
 638                 return r;
 639
 640         r = bus_load_unit_by_name(m, message, name, &u, error);
 641         if (r < 0)
 642                 return r;
 643
 644         r = bus_unit_check_load_state(u, error);
 645         if (r < 0)
 646                 return r;
 647
 648         return bus_unit_method_set_properties(message, u, error);
 649 }
 650
 651 static int method_ref_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 652         Manager *m = userdata;
 653         const char *name;
 654         Unit *u;
 655         int r;
 656
 657         assert(message);
 658         assert(m);
 659
 660         r = sd_bus_message_read(message, "s", &name);
 661         if (r < 0)
 662                 return r;
 663
 664         r = bus_load_unit_by_name(m, message, name, &u, error);
 665         if (r < 0)
 666                 return r;
 667
 668         r = bus_unit_check_load_state(u, error);
 669         if (r < 0)
 670                 return r;
 671
 672         return bus_unit_method_ref(message, u, error);
 673 }
 674
 675 static int method_unref_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 676         Manager *m = userdata;
 677         const char *name;
 678         Unit *u;
 679         int r;
 680
 681         assert(message);
 682         assert(m);
 683
 684         r = sd_bus_message_read(message, "s", &name);
 685         if (r < 0)
 686                 return r;
 687
 688         r = bus_load_unit_by_name(m, message, name, &u, error);
 689         if (r < 0)
 690                 return r;
 691
 692         r = bus_unit_check_load_state(u, error);
 693         if (r < 0)
 694                 return r;
 695
 696         return bus_unit_method_unref(message, u, error);
 697 }
 698
 699 static int reply_unit_info(sd_bus_message *reply, Unit *u) {
 700         _cleanup_free_ char *unit_path = NULL, *job_path = NULL;
 701         Unit *following;
 702
 703         following = unit_following(u);
 704
 705         unit_path = unit_dbus_path(u);
 706         if (!unit_path)
 707                 return -ENOMEM;
 708
 709         if (u->job) {
 710                 job_path = job_dbus_path(u->job);
 711                 if (!job_path)
 712                         return -ENOMEM;
 713         }
 714
 715         return sd_bus_message_append(
 716                         reply, "(ssssssouso)",
 717                         u->id,
 718                         unit_description(u),
 719                         unit_load_state_to_string(u->load_state),
 720                         unit_active_state_to_string(unit_active_state(u)),
 721                         unit_sub_state_to_string(u),
 722                         following ? following->id : "",
 723                         unit_path,
 724                         u->job ? u->job->id : 0,
 725                         u->job ? job_type_to_string(u->job->type) : "",
 726                         job_path ? job_path : "/");
 727 }
 728
 729 static int method_list_units_by_names(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 730         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 731         Manager *m = userdata;
 732         int r;
 733         char **unit;
 734         _cleanup_strv_free_ char **units = NULL;
 735
 736         assert(message);
 737         assert(m);
 738
 739         r = sd_bus_message_read_strv(message, &units);
 740         if (r < 0)
 741                 return r;
 742
 743         r = sd_bus_message_new_method_return(message, &reply);
 744         if (r < 0)
 745                 return r;
 746
 747         r = sd_bus_message_open_container(reply, 'a', "(ssssssouso)");
 748         if (r < 0)
 749                 return r;
 750
 751         STRV_FOREACH(unit, units) {
 752                 Unit *u;
 753
 754                 if (!unit_name_is_valid(*unit, UNIT_NAME_ANY))
 755                         continue;
 756
 757                 r = bus_load_unit_by_name(m, message, *unit, &u, error);
 758                 if (r < 0)
 759                         return r;
 760
 761                 r = reply_unit_info(reply, u);
 762                 if (r < 0)
 763                         return r;
 764         }
 765
 766         r = sd_bus_message_close_container(reply);
 767         if (r < 0)
 768                 return r;
 769
 770         return sd_bus_send(NULL, reply, NULL);
 771 }
 772
 773 static int method_get_unit_processes(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 774         Manager *m = userdata;
 775         const char *name;
 776         Unit *u;
 777         int r;
 778
 779         assert(message);
 780         assert(m);
 781
 782         r = sd_bus_message_read(message, "s", &name);
 783         if (r < 0)
 784                 return r;
 785
 786         r = bus_get_unit_by_name(m, message, name, &u, error);
 787         if (r < 0)
 788                 return r;
 789
 790         return bus_unit_method_get_processes(message, u, error);
 791 }
 792
 793 static int method_attach_processes_to_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 794         Manager *m = userdata;
 795         const char *name;
 796         Unit *u;
 797         int r;
 798
 799         assert(message);
 800         assert(m);
 801
 802         r = sd_bus_message_read(message, "s", &name);
 803         if (r < 0)
 804                 return r;
 805
 806         r = bus_get_unit_by_name(m, message, name, &u, error);
 807         if (r < 0)
 808                 return r;
 809
 810         return bus_unit_method_attach_processes(message, u, error);
 811 }
 812
 813 static int transient_unit_from_message(
 814                 Manager *m,
 815                 sd_bus_message *message,
 816                 const char *name,
 817                 Unit **unit,
 818                 sd_bus_error *error) {
 819
 820         UnitType t;
 821         Unit *u;
 822         int r;
 823
 824         assert(m);
 825         assert(message);
 826         assert(name);
 827
 828         t = unit_name_to_type(name);
 829         if (t < 0)
 830                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid unit name or type.");
 831
 832         if (!unit_vtable[t]->can_transient)
 833                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unit type %s does not support transient units.", unit_type_to_string(t));
 834
 835         r = manager_load_unit(m, name, NULL, error, &u);
 836         if (r < 0)
 837                 return r;
 838
 839         if (!unit_is_pristine(u))
 840                 return sd_bus_error_setf(error, BUS_ERROR_UNIT_EXISTS, "Unit %s already exists.", name);
 841
 842         /* OK, the unit failed to load and is unreferenced, now let's
 843          * fill in the transient data instead */
 844         r = unit_make_transient(u);
 845         if (r < 0)
 846                 return r;
 847
 848         /* Set our properties */
 849         r = bus_unit_set_properties(u, message, UNIT_RUNTIME, false, error);
 850         if (r < 0)
 851                 return r;
 852
 853         /* If the client asked for it, automatically add a reference to this unit. */
 854         if (u->bus_track_add) {
 855                 r = bus_unit_track_add_sender(u, message);
 856                 if (r < 0)
 857                         return log_error_errno(r, "Failed to watch sender: %m");
 858         }
 859
 860         /* Now load the missing bits of the unit we just created */
 861         unit_add_to_load_queue(u);
 862         manager_dispatch_load_queue(m);
 863
 864         *unit = u;
 865
 866         return 0;
 867 }
 868
 869 static int transient_aux_units_from_message(
 870                 Manager *m,
 871                 sd_bus_message *message,
 872                 sd_bus_error *error) {
 873
 874         int r;
 875
 876         assert(m);
 877         assert(message);
 878
 879         r = sd_bus_message_enter_container(message, 'a', "(sa(sv))");
 880         if (r < 0)
 881                 return r;
 882
 883         while ((r = sd_bus_message_enter_container(message, 'r', "sa(sv)")) > 0) {
 884                 const char *name = NULL;
 885                 Unit *u;
 886
 887                 r = sd_bus_message_read(message, "s", &name);
 888                 if (r < 0)
 889                         return r;
 890
 891                 r = transient_unit_from_message(m, message, name, &u, error);
 892                 if (r < 0)
 893                         return r;
 894
 895                 r = sd_bus_message_exit_container(message);
 896                 if (r < 0)
 897                         return r;
 898         }
 899         if (r < 0)
 900                 return r;
 901
 902         r = sd_bus_message_exit_container(message);
 903         if (r < 0)
 904                 return r;
 905
 906         return 0;
 907 }
 908
 909 static int method_start_transient_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 910         const char *name, *smode;
 911         Manager *m = userdata;
 912         JobMode mode;
 913         Unit *u;
 914         int r;
 915
 916         assert(message);
 917         assert(m);
 918
 919         r = mac_selinux_access_check(message, "start", error);
 920         if (r < 0)
 921                 return r;
 922
 923         r = sd_bus_message_read(message, "ss", &name, &smode);
 924         if (r < 0)
 925                 return r;
 926
 927         mode = job_mode_from_string(smode);
 928         if (mode < 0)
 929                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Job mode %s is invalid.", smode);
 930
 931         r = bus_verify_manage_units_async(m, message, error);
 932         if (r < 0)
 933                 return r;
 934         if (r == 0)
 935                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
 936
 937         r = transient_unit_from_message(m, message, name, &u, error);
 938         if (r < 0)
 939                 return r;
 940
 941         r = transient_aux_units_from_message(m, message, error);
 942         if (r < 0)
 943                 return r;
 944
 945         /* Finally, start it */
 946         return bus_unit_queue_job(message, u, JOB_START, mode, false, error);
 947 }
 948
 949 static int method_get_job(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 950         _cleanup_free_ char *path = NULL;
 951         Manager *m = userdata;
 952         uint32_t id;
 953         Job *j;
 954         int r;
 955
 956         assert(message);
 957         assert(m);
 958
 959         /* Anyone can call this method */
 960
 961         r = sd_bus_message_read(message, "u", &id);
 962         if (r < 0)
 963                 return r;
 964
 965         j = manager_get_job(m, id);
 966         if (!j)
 967                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
 968
 969         r = mac_selinux_unit_access_check(j->unit, message, "status", error);
 970         if (r < 0)
 971                 return r;
 972
 973         path = job_dbus_path(j);
 974         if (!path)
 975                 return -ENOMEM;
 976
 977         return sd_bus_reply_method_return(message, "o", path);
 978 }
 979
 980 static int method_cancel_job(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 981         Manager *m = userdata;
 982         uint32_t id;
 983         Job *j;
 984         int r;
 985
 986         assert(message);
 987         assert(m);
 988
 989         r = sd_bus_message_read(message, "u", &id);
 990         if (r < 0)
 991                 return r;
 992
 993         j = manager_get_job(m, id);
 994         if (!j)
 995                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
 996
 997         return bus_job_method_cancel(message, j, error);
 998 }
 999
1000 static int method_clear_jobs(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1001         Manager *m = userdata;
1002         int r;
1003
1004         assert(message);
1005         assert(m);
1006
1007         r = mac_selinux_access_check(message, "reload", error);
1008         if (r < 0)
1009                 return r;
1010
1011         r = bus_verify_manage_units_async(m, message, error);
1012         if (r < 0)
1013                 return r;
1014         if (r == 0)
1015                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1016
1017         manager_clear_jobs(m);
1018
1019         return sd_bus_reply_method_return(message, NULL);
1020 }
1021
1022 static int method_reset_failed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1023         Manager *m = userdata;
1024         int r;
1025
1026         assert(message);
1027         assert(m);
1028
1029         r = mac_selinux_access_check(message, "reload", error);
1030         if (r < 0)
1031                 return r;
1032
1033         r = bus_verify_manage_units_async(m, message, error);
1034         if (r < 0)
1035                 return r;
1036         if (r == 0)
1037                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1038
1039         manager_reset_failed(m);
1040
1041         return sd_bus_reply_method_return(message, NULL);
1042 }
1043
1044 static int list_units_filtered(sd_bus_message *message, void *userdata, sd_bus_error *error, char **states, char **patterns) {
1045         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1046         Manager *m = userdata;
1047         const char *k;
1048         Iterator i;
1049         Unit *u;
1050         int r;
1051
1052         assert(message);
1053         assert(m);
1054
1055         /* Anyone can call this method */
1056
1057         r = mac_selinux_access_check(message, "status", error);
1058         if (r < 0)
1059                 return r;
1060
1061         r = sd_bus_message_new_method_return(message, &reply);
1062         if (r < 0)
1063                 return r;
1064
1065         r = sd_bus_message_open_container(reply, 'a', "(ssssssouso)");
1066         if (r < 0)
1067                 return r;
1068
1069         HASHMAP_FOREACH_KEY(u, k, m->units, i) {
1070                 if (k != u->id)
1071                         continue;
1072
1073                 if (!strv_isempty(states) &&
1074                     !strv_contains(states, unit_load_state_to_string(u->load_state)) &&
1075                     !strv_contains(states, unit_active_state_to_string(unit_active_state(u))) &&
1076                     !strv_contains(states, unit_sub_state_to_string(u)))
1077                         continue;
1078
1079                 if (!strv_isempty(patterns) &&
1080                     !strv_fnmatch_or_empty(patterns, u->id, FNM_NOESCAPE))
1081                         continue;
1082
1083                 r = reply_unit_info(reply, u);
1084                 if (r < 0)
1085                         return r;
1086         }
1087
1088         r = sd_bus_message_close_container(reply);
1089         if (r < 0)
1090                 return r;
1091
1092         return sd_bus_send(NULL, reply, NULL);
1093 }
1094
1095 static int method_list_units(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1096         return list_units_filtered(message, userdata, error, NULL, NULL);
1097 }
1098
1099 static int method_list_units_filtered(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1100         _cleanup_strv_free_ char **states = NULL;
1101         int r;
1102
1103         r = sd_bus_message_read_strv(message, &states);
1104         if (r < 0)
1105                 return r;
1106
1107         return list_units_filtered(message, userdata, error, states, NULL);
1108 }
1109
1110 static int method_list_units_by_patterns(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1111         _cleanup_strv_free_ char **states = NULL;
1112         _cleanup_strv_free_ char **patterns = NULL;
1113         int r;
1114
1115         r = sd_bus_message_read_strv(message, &states);
1116         if (r < 0)
1117                 return r;
1118
1119         r = sd_bus_message_read_strv(message, &patterns);
1120         if (r < 0)
1121                 return r;
1122
1123         return list_units_filtered(message, userdata, error, states, patterns);
1124 }
1125
1126 static int method_list_jobs(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1127         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1128         Manager *m = userdata;
1129         Iterator i;
1130         Job *j;
1131         int r;
1132
1133         assert(message);
1134         assert(m);
1135
1136         /* Anyone can call this method */
1137
1138         r = mac_selinux_access_check(message, "status", error);
1139         if (r < 0)
1140                 return r;
1141
1142         r = sd_bus_message_new_method_return(message, &reply);
1143         if (r < 0)
1144                 return r;
1145
1146         r = sd_bus_message_open_container(reply, 'a', "(usssoo)");
1147         if (r < 0)
1148                 return r;
1149
1150         HASHMAP_FOREACH(j, m->jobs, i) {
1151                 _cleanup_free_ char *unit_path = NULL, *job_path = NULL;
1152
1153                 job_path = job_dbus_path(j);
1154                 if (!job_path)
1155                         return -ENOMEM;
1156
1157                 unit_path = unit_dbus_path(j->unit);
1158                 if (!unit_path)
1159                         return -ENOMEM;
1160
1161                 r = sd_bus_message_append(
1162                                 reply, "(usssoo)",
1163                                 j->id,
1164                                 j->unit->id,
1165                                 job_type_to_string(j->type),
1166                                 job_state_to_string(j->state),
1167                                 job_path,
1168                                 unit_path);
1169                 if (r < 0)
1170                         return r;
1171         }
1172
1173         r = sd_bus_message_close_container(reply);
1174         if (r < 0)
1175                 return r;
1176
1177         return sd_bus_send(NULL, reply, NULL);
1178 }
1179
1180 static int method_subscribe(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1181         Manager *m = userdata;
1182         int r;
1183
1184         assert(message);
1185         assert(m);
1186
1187         /* Anyone can call this method */
1188
1189         r = mac_selinux_access_check(message, "status", error);
1190         if (r < 0)
1191                 return r;
1192
1193         if (sd_bus_message_get_bus(message) == m->api_bus) {
1194
1195                 /* Note that direct bus connection subscribe by
1196                  * default, we only track peers on the API bus here */
1197
1198                 if (!m->subscribed) {
1199                         r = sd_bus_track_new(sd_bus_message_get_bus(message), &m->subscribed, NULL, NULL);
1200                         if (r < 0)
1201                                 return r;
1202                 }
1203
1204                 r = sd_bus_track_add_sender(m->subscribed, message);
1205                 if (r < 0)
1206                         return r;
1207                 if (r == 0)
1208                         return sd_bus_error_setf(error, BUS_ERROR_ALREADY_SUBSCRIBED, "Client is already subscribed.");
1209         }
1210
1211         return sd_bus_reply_method_return(message, NULL);
1212 }
1213
1214 static int method_unsubscribe(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1215         Manager *m = userdata;
1216         int r;
1217
1218         assert(message);
1219         assert(m);
1220
1221         /* Anyone can call this method */
1222
1223         r = mac_selinux_access_check(message, "status", error);
1224         if (r < 0)
1225                 return r;
1226
1227         if (sd_bus_message_get_bus(message) == m->api_bus) {
1228                 r = sd_bus_track_remove_sender(m->subscribed, message);
1229                 if (r < 0)
1230                         return r;
1231                 if (r == 0)
1232                         return sd_bus_error_setf(error, BUS_ERROR_NOT_SUBSCRIBED, "Client is not subscribed.");
1233         }
1234
1235         return sd_bus_reply_method_return(message, NULL);
1236 }
1237
1238 static int dump_impl(sd_bus_message *message, void *userdata, sd_bus_error *error, int (*reply)(sd_bus_message *, char *)) {
1239         _cleanup_free_ char *dump = NULL;
1240         Manager *m = userdata;
1241         int r;
1242
1243         assert(message);
1244         assert(m);
1245
1246         /* Anyone can call this method */
1247
1248         r = mac_selinux_access_check(message, "status", error);
1249         if (r < 0)
1250                 return r;
1251
1252         r = manager_get_dump_string(m, &dump);
1253         if (r < 0)
1254                 return r;
1255
1256         return reply(message, dump);
1257 }
1258
1259 static int reply_dump(sd_bus_message *message, char *dump) {
1260         return sd_bus_reply_method_return(message, "s", dump);
1261 }
1262
1263 static int method_dump(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1264         return dump_impl(message, userdata, error, reply_dump);
1265 }
1266
1267 static int reply_dump_by_fd(sd_bus_message *message, char *dump) {
1268         _cleanup_close_ int fd = -1;
1269
1270         fd = acquire_data_fd(dump, strlen(dump), 0);
1271         if (fd < 0)
1272                 return fd;
1273
1274         return sd_bus_reply_method_return(message, "h", fd);
1275 }
1276
1277 static int method_dump_by_fd(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1278         return dump_impl(message, userdata, error, reply_dump_by_fd);
1279 }
1280
1281 static int method_refuse_snapshot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1282         return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Support for snapshots has been removed.");
1283 }
1284
1285 static int verify_run_space(const char *message, sd_bus_error *error) {
1286         struct statvfs svfs;
1287         uint64_t available;
1288
1289         if (statvfs("/run/systemd", &svfs) < 0)
1290                 return sd_bus_error_set_errnof(error, errno, "Failed to statvfs(/run/systemd): %m");
1291
1292         available = (uint64_t) svfs.f_bfree * (uint64_t) svfs.f_bsize;
1293
1294         if (available < RELOAD_DISK_SPACE_MIN) {
1295                 char fb_available[FORMAT_BYTES_MAX], fb_need[FORMAT_BYTES_MAX];
1296                 return sd_bus_error_setf(error,
1297                                          BUS_ERROR_DISK_FULL,
1298                                          "%s, not enough space available on /run/systemd. "
1299                                          "Currently, %s are free, but a safety buffer of %s is enforced.",
1300                                          message,
1301                                          format_bytes(fb_available, sizeof(fb_available), available),
1302                                          format_bytes(fb_need, sizeof(fb_need), RELOAD_DISK_SPACE_MIN));
1303         }
1304
1305         return 0;
1306 }
1307
1308 int verify_run_space_and_log(const char *message) {
1309         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1310         int r;
1311
1312         r = verify_run_space(message, &error);
1313         if (r < 0)
1314                 log_error_errno(r, "%s", bus_error_message(&error, r));
1315
1316         return r;
1317 }
1318
1319 static int method_reload(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1320         Manager *m = userdata;
1321         int r;
1322
1323         assert(message);
1324         assert(m);
1325
1326         r = verify_run_space("Refusing to reload", error);
1327         if (r < 0)
1328                 return r;
1329
1330         r = mac_selinux_access_check(message, "reload", error);
1331         if (r < 0)
1332                 return r;
1333
1334         r = bus_verify_reload_daemon_async(m, message, error);
1335         if (r < 0)
1336                 return r;
1337         if (r == 0)
1338                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1339
1340         /* Instead of sending the reply back right away, we just
1341          * remember that we need to and then send it after the reload
1342          * is finished. That way the caller knows when the reload
1343          * finished. */
1344
1345         assert(!m->queued_message);
1346         r = sd_bus_message_new_method_return(message, &m->queued_message);
1347         if (r < 0)
1348                 return r;
1349
1350         m->exit_code = MANAGER_RELOAD;
1351
1352         return 1;
1353 }
1354
1355 static int method_reexecute(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1356         Manager *m = userdata;
1357         int r;
1358
1359         assert(message);
1360         assert(m);
1361
1362         r = verify_run_space("Refusing to reexecute", error);
1363         if (r < 0)
1364                 return r;
1365
1366         r = mac_selinux_access_check(message, "reload", error);
1367         if (r < 0)
1368                 return r;
1369
1370         r = bus_verify_reload_daemon_async(m, message, error);
1371         if (r < 0)
1372                 return r;
1373         if (r == 0)
1374                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1375
1376         /* We don't send a reply back here, the client should
1377          * just wait for us disconnecting. */
1378
1379         m->exit_code = MANAGER_REEXECUTE;
1380         return 1;
1381 }
1382
1383 static int method_exit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1384         Manager *m = userdata;
1385         int r;
1386
1387         assert(message);
1388         assert(m);
1389
1390         r = mac_selinux_access_check(message, "halt", error);
1391         if (r < 0)
1392                 return r;
1393
1394         /* Exit() (in contrast to SetExitCode()) is actually allowed even if
1395          * we are running on the host. It will fall back on reboot() in
1396          * systemd-shutdown if it cannot do the exit() because it isn't a
1397          * container. */
1398
1399         m->exit_code = MANAGER_EXIT;
1400
1401         return sd_bus_reply_method_return(message, NULL);
1402 }
1403
1404 static int method_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1405         Manager *m = userdata;
1406         int r;
1407
1408         assert(message);
1409         assert(m);
1410
1411         r = mac_selinux_access_check(message, "reboot", error);
1412         if (r < 0)
1413                 return r;
1414
1415         if (!MANAGER_IS_SYSTEM(m))
1416                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Reboot is only supported for system managers.");
1417
1418         m->exit_code = MANAGER_REBOOT;
1419
1420         return sd_bus_reply_method_return(message, NULL);
1421 }
1422
1423 static int method_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1424         Manager *m = userdata;
1425         int r;
1426
1427         assert(message);
1428         assert(m);
1429
1430         r = mac_selinux_access_check(message, "halt", error);
1431         if (r < 0)
1432                 return r;
1433
1434         if (!MANAGER_IS_SYSTEM(m))
1435                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Powering off is only supported for system managers.");
1436
1437         m->exit_code = MANAGER_POWEROFF;
1438
1439         return sd_bus_reply_method_return(message, NULL);
1440 }
1441
1442 static int method_halt(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, "halt", 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, "Halt is only supported for system managers.");
1455
1456         m->exit_code = MANAGER_HALT;
1457
1458         return sd_bus_reply_method_return(message, NULL);
1459 }
1460
1461 static int method_kexec(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, "reboot", 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, "KExec is only supported for system managers.");
1474
1475         m->exit_code = MANAGER_KEXEC;
1476
1477         return sd_bus_reply_method_return(message, NULL);
1478 }
1479
1480 static int method_switch_root(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1481         char *ri = NULL, *rt = NULL;
1482         const char *root, *init;
1483         Manager *m = userdata;
1484         struct statvfs svfs;
1485         uint64_t available;
1486         int r;
1487
1488         assert(message);
1489         assert(m);
1490
1491         if (statvfs("/run/systemd", &svfs) < 0)
1492                 return sd_bus_error_set_errnof(error, errno, "Failed to statvfs(/run/systemd): %m");
1493
1494         available = (uint64_t) svfs.f_bfree * (uint64_t) svfs.f_bsize;
1495
1496         if (available < RELOAD_DISK_SPACE_MIN) {
1497                 char fb_available[FORMAT_BYTES_MAX], fb_need[FORMAT_BYTES_MAX];
1498                 log_warning("Dangerously low amount of free space on /run/systemd, root switching operation might not complete successfuly. "
1499                             "Currently, %s are free, but %s are suggested. Proceeding anyway.",
1500                             format_bytes(fb_available, sizeof(fb_available), available),
1501                             format_bytes(fb_need, sizeof(fb_need), RELOAD_DISK_SPACE_MIN));
1502         }
1503
1504         r = mac_selinux_access_check(message, "reboot", error);
1505         if (r < 0)
1506                 return r;
1507
1508         if (!MANAGER_IS_SYSTEM(m))
1509                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Root switching is only supported by system manager.");
1510
1511         r = sd_bus_message_read(message, "ss", &root, &init);
1512         if (r < 0)
1513                 return r;
1514
1515         if (isempty(root))
1516                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "New root directory may not be the empty string.");
1517         if (!path_is_absolute(root))
1518                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "New root path '%s' is not absolute.", root);
1519         if (path_equal(root, "/"))
1520                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "New root directory cannot be the old root directory.");
1521
1522         /* Safety check */
1523         if (isempty(init)) {
1524                 r = path_is_os_tree(root);
1525                 if (r < 0)
1526                         return sd_bus_error_set_errnof(error, r, "Failed to determine whether root path '%s' contains an OS tree: %m", root);
1527                 if (r == 0)
1528                         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);
1529         } else {
1530                 _cleanup_free_ char *chased = NULL;
1531
1532                 if (!path_is_absolute(init))
1533                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path to init binary '%s' not absolute.", init);
1534
1535                 r = chase_symlinks(init, root, CHASE_PREFIX_ROOT|CHASE_TRAIL_SLASH, &chased);
1536                 if (r < 0)
1537                         return sd_bus_error_set_errnof(error, r, "Could not resolve init executable %s: %m", init);
1538
1539                 if (laccess(chased, X_OK) < 0) {
1540                         if (errno == EACCES)
1541                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Init binary %s is not executable.", init);
1542
1543                         return sd_bus_error_set_errnof(error, r, "Could not check whether init binary %s is executable: %m", init);
1544                 }
1545         }
1546
1547         rt = strdup(root);
1548         if (!rt)
1549                 return -ENOMEM;
1550
1551         if (!isempty(init)) {
1552                 ri = strdup(init);
1553                 if (!ri) {
1554                         free(rt);
1555                         return -ENOMEM;
1556                 }
1557         }
1558
1559         free(m->switch_root);
1560         m->switch_root = rt;
1561
1562         free(m->switch_root_init);
1563         m->switch_root_init = ri;
1564
1565         m->exit_code = MANAGER_SWITCH_ROOT;
1566
1567         return sd_bus_reply_method_return(message, NULL);
1568 }
1569
1570 static int method_set_environment(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1571         _cleanup_strv_free_ char **plus = NULL;
1572         Manager *m = userdata;
1573         int r;
1574
1575         assert(message);
1576         assert(m);
1577
1578         r = mac_selinux_access_check(message, "reload", error);
1579         if (r < 0)
1580                 return r;
1581
1582         r = sd_bus_message_read_strv(message, &plus);
1583         if (r < 0)
1584                 return r;
1585         if (!strv_env_is_valid(plus))
1586                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment assignments");
1587
1588         r = bus_verify_set_environment_async(m, message, error);
1589         if (r < 0)
1590                 return r;
1591         if (r == 0)
1592                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1593
1594         r = manager_environment_add(m, NULL, plus);
1595         if (r < 0)
1596                 return r;
1597
1598         return sd_bus_reply_method_return(message, NULL);
1599 }
1600
1601 static int method_unset_environment(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1602         _cleanup_strv_free_ char **minus = NULL;
1603         Manager *m = userdata;
1604         int r;
1605
1606         assert(message);
1607         assert(m);
1608
1609         r = mac_selinux_access_check(message, "reload", error);
1610         if (r < 0)
1611                 return r;
1612
1613         r = sd_bus_message_read_strv(message, &minus);
1614         if (r < 0)
1615                 return r;
1616
1617         if (!strv_env_name_or_assignment_is_valid(minus))
1618                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment variable names or assignments");
1619
1620         r = bus_verify_set_environment_async(m, message, error);
1621         if (r < 0)
1622                 return r;
1623         if (r == 0)
1624                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1625
1626         r = manager_environment_add(m, minus, NULL);
1627         if (r < 0)
1628                 return r;
1629
1630         return sd_bus_reply_method_return(message, NULL);
1631 }
1632
1633 static int method_unset_and_set_environment(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1634         _cleanup_strv_free_ char **minus = NULL, **plus = NULL;
1635         Manager *m = userdata;
1636         int r;
1637
1638         assert(message);
1639         assert(m);
1640
1641         r = mac_selinux_access_check(message, "reload", error);
1642         if (r < 0)
1643                 return r;
1644
1645         r = sd_bus_message_read_strv(message, &minus);
1646         if (r < 0)
1647                 return r;
1648
1649         r = sd_bus_message_read_strv(message, &plus);
1650         if (r < 0)
1651                 return r;
1652
1653         if (!strv_env_name_or_assignment_is_valid(minus))
1654                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment variable names or assignments");
1655         if (!strv_env_is_valid(plus))
1656                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment 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, plus);
1665         if (r < 0)
1666                 return r;
1667
1668         return sd_bus_reply_method_return(message, NULL);
1669 }
1670
1671 static int method_set_exit_code(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1672         Manager *m = userdata;
1673         uint8_t code;
1674         int r;
1675
1676         assert(message);
1677         assert(m);
1678
1679         r = mac_selinux_access_check(message, "exit", error);
1680         if (r < 0)
1681                 return r;
1682
1683         r = sd_bus_message_read_basic(message, 'y', &code);
1684         if (r < 0)
1685                 return r;
1686
1687         if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0)
1688                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "ExitCode can only be set for user service managers or in containers.");
1689
1690         m->return_value = code;
1691
1692         return sd_bus_reply_method_return(message, NULL);
1693 }
1694
1695 static int method_lookup_dynamic_user_by_name(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1696         Manager *m = userdata;
1697         const char *name;
1698         uid_t uid;
1699         int r;
1700
1701         assert(message);
1702         assert(m);
1703
1704         r = sd_bus_message_read_basic(message, 's', &name);
1705         if (r < 0)
1706                 return r;
1707
1708         if (!MANAGER_IS_SYSTEM(m))
1709                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Dynamic users are only supported in the system instance.");
1710         if (!valid_user_group_name(name))
1711                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "User name invalid: %s", name);
1712
1713         r = dynamic_user_lookup_name(m, name, &uid);
1714         if (r == -ESRCH)
1715                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_DYNAMIC_USER, "Dynamic user %s does not exist.", name);
1716         if (r < 0)
1717                 return r;
1718
1719         return sd_bus_reply_method_return(message, "u", (uint32_t) uid);
1720 }
1721
1722 static int method_lookup_dynamic_user_by_uid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1723         _cleanup_free_ char *name = NULL;
1724         Manager *m = userdata;
1725         uid_t uid;
1726         int r;
1727
1728         assert(message);
1729         assert(m);
1730
1731         assert_cc(sizeof(uid) == sizeof(uint32_t));
1732         r = sd_bus_message_read_basic(message, 'u', &uid);
1733         if (r < 0)
1734                 return r;
1735
1736         if (!MANAGER_IS_SYSTEM(m))
1737                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Dynamic users are only supported in the system instance.");
1738         if (!uid_is_valid(uid))
1739                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "User ID invalid: " UID_FMT, uid);
1740
1741         r = dynamic_user_lookup_uid(m, uid, &name);
1742         if (r == -ESRCH)
1743                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_DYNAMIC_USER, "Dynamic user ID " UID_FMT " does not exist.", uid);
1744         if (r < 0)
1745                 return r;
1746
1747         return sd_bus_reply_method_return(message, "s", name);
1748 }
1749
1750 static int method_get_dynamic_users(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1751         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1752         Manager *m = userdata;
1753         DynamicUser *d;
1754         Iterator i;
1755         int r;
1756
1757         assert(message);
1758         assert(m);
1759
1760         assert_cc(sizeof(uid_t) == sizeof(uint32_t));
1761
1762         if (!MANAGER_IS_SYSTEM(m))
1763                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Dynamic users are only supported in the system instance.");
1764
1765         r = sd_bus_message_new_method_return(message, &reply);
1766         if (r < 0)
1767                 return r;
1768
1769         r = sd_bus_message_open_container(reply, 'a', "(us)");
1770         if (r < 0)
1771                 return r;
1772
1773         HASHMAP_FOREACH(d, m->dynamic_users, i) {
1774                 uid_t uid;
1775
1776                 r = dynamic_user_current(d, &uid);
1777                 if (r == -EAGAIN) /* not realized yet? */
1778                         continue;
1779                 if (r < 0)
1780                         return sd_bus_error_setf(error, SD_BUS_ERROR_FAILED, "Failed to lookup a dynamic user.");
1781
1782                 r = sd_bus_message_append(reply, "(us)", uid, d->name);
1783                 if (r < 0)
1784                         return r;
1785         }
1786
1787         r = sd_bus_message_close_container(reply);
1788         if (r < 0)
1789                 return r;
1790
1791         return sd_bus_send(NULL, reply, NULL);
1792 }
1793
1794 static int list_unit_files_by_patterns(sd_bus_message *message, void *userdata, sd_bus_error *error, char **states, char **patterns) {
1795         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1796         Manager *m = userdata;
1797         UnitFileList *item;
1798         Hashmap *h;
1799         Iterator i;
1800         int r;
1801
1802         assert(message);
1803         assert(m);
1804
1805         /* Anyone can call this method */
1806
1807         r = mac_selinux_access_check(message, "status", error);
1808         if (r < 0)
1809                 return r;
1810
1811         r = sd_bus_message_new_method_return(message, &reply);
1812         if (r < 0)
1813                 return r;
1814
1815         h = hashmap_new(&string_hash_ops);
1816         if (!h)
1817                 return -ENOMEM;
1818
1819         r = unit_file_get_list(m->unit_file_scope, NULL, h, states, patterns);
1820         if (r < 0)
1821                 goto fail;
1822
1823         r = sd_bus_message_open_container(reply, 'a', "(ss)");
1824         if (r < 0)
1825                 goto fail;
1826
1827         HASHMAP_FOREACH(item, h, i) {
1828
1829                 r = sd_bus_message_append(reply, "(ss)", item->path, unit_file_state_to_string(item->state));
1830                 if (r < 0)
1831                         goto fail;
1832         }
1833
1834         unit_file_list_free(h);
1835
1836         r = sd_bus_message_close_container(reply);
1837         if (r < 0)
1838                 return r;
1839
1840         return sd_bus_send(NULL, reply, NULL);
1841
1842 fail:
1843         unit_file_list_free(h);
1844         return r;
1845 }
1846
1847 static int method_list_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1848         return list_unit_files_by_patterns(message, userdata, error, NULL, NULL);
1849 }
1850
1851 static int method_list_unit_files_by_patterns(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1852         _cleanup_strv_free_ char **states = NULL;
1853         _cleanup_strv_free_ char **patterns = NULL;
1854         int r;
1855
1856         r = sd_bus_message_read_strv(message, &states);
1857         if (r < 0)
1858                 return r;
1859
1860         r = sd_bus_message_read_strv(message, &patterns);
1861         if (r < 0)
1862                 return r;
1863
1864         return list_unit_files_by_patterns(message, userdata, error, states, patterns);
1865 }
1866
1867 static int method_get_unit_file_state(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1868         Manager *m = userdata;
1869         const char *name;
1870         UnitFileState state;
1871         int r;
1872
1873         assert(message);
1874         assert(m);
1875
1876         /* Anyone can call this method */
1877
1878         r = mac_selinux_access_check(message, "status", error);
1879         if (r < 0)
1880                 return r;
1881
1882         r = sd_bus_message_read(message, "s", &name);
1883         if (r < 0)
1884                 return r;
1885
1886         r = unit_file_get_state(m->unit_file_scope, NULL, name, &state);
1887         if (r < 0)
1888                 return r;
1889
1890         return sd_bus_reply_method_return(message, "s", unit_file_state_to_string(state));
1891 }
1892
1893 static int method_get_default_target(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1894         _cleanup_free_ char *default_target = NULL;
1895         Manager *m = userdata;
1896         int r;
1897
1898         assert(message);
1899         assert(m);
1900
1901         /* Anyone can call this method */
1902
1903         r = mac_selinux_access_check(message, "status", error);
1904         if (r < 0)
1905                 return r;
1906
1907         r = unit_file_get_default(m->unit_file_scope, NULL, &default_target);
1908         if (r < 0)
1909                 return r;
1910
1911         return sd_bus_reply_method_return(message, "s", default_target);
1912 }
1913
1914 static int send_unit_files_changed(sd_bus *bus, void *userdata) {
1915         _cleanup_(sd_bus_message_unrefp) sd_bus_message *message = NULL;
1916         int r;
1917
1918         assert(bus);
1919
1920         r = sd_bus_message_new_signal(bus, &message, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "UnitFilesChanged");
1921         if (r < 0)
1922                 return r;
1923
1924         return sd_bus_send(bus, message, NULL);
1925 }
1926
1927 /* Create an error reply, using the error information from changes[]
1928  * if possible, and fall back to generating an error from error code c.
1929  * The error message only describes the first error.
1930  *
1931  * Coordinate with unit_file_dump_changes() in install.c.
1932  */
1933 static int install_error(
1934                 sd_bus_error *error,
1935                 int c,
1936                 UnitFileChange *changes,
1937                 size_t n_changes) {
1938
1939         size_t i;
1940         int r;
1941
1942         for (i = 0; i < n_changes; i++)
1943
1944                 switch(changes[i].type) {
1945
1946                 case 0 ... INT_MAX:
1947                         continue;
1948
1949                 case -EEXIST:
1950                         if (changes[i].source)
1951                                 r = sd_bus_error_setf(error, BUS_ERROR_UNIT_EXISTS,
1952                                                       "File %s already exists and is a symlink to %s.",
1953                                                       changes[i].path, changes[i].source);
1954                         else
1955                                 r = sd_bus_error_setf(error, BUS_ERROR_UNIT_EXISTS,
1956                                                       "File %s already exists.",
1957                                                       changes[i].path);
1958                         goto found;
1959
1960                 case -ERFKILL:
1961                         r = sd_bus_error_setf(error, BUS_ERROR_UNIT_MASKED,
1962                                               "Unit file %s is masked.", changes[i].path);
1963                         goto found;
1964
1965                 case -EADDRNOTAVAIL:
1966                         r = sd_bus_error_setf(error, BUS_ERROR_UNIT_GENERATED,
1967                                               "Unit %s is transient or generated.", changes[i].path);
1968                         goto found;
1969
1970                 case -ELOOP:
1971                         r = sd_bus_error_setf(error, BUS_ERROR_UNIT_LINKED,
1972                                               "Refusing to operate on linked unit file %s", changes[i].path);
1973                         goto found;
1974
1975                 case -ENOENT:
1976                         r = sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit file %s does not exist.", changes[i].path);
1977                         goto found;
1978
1979                 default:
1980                         r = sd_bus_error_set_errnof(error, changes[i].type, "File %s: %m", changes[i].path);
1981                         goto found;
1982                 }
1983
1984         r = c < 0 ? c : -EINVAL;
1985
1986  found:
1987         unit_file_changes_free(changes, n_changes);
1988         return r;
1989 }
1990
1991 static int reply_unit_file_changes_and_free(
1992                 Manager *m,
1993                 sd_bus_message *message,
1994                 int carries_install_info,
1995                 UnitFileChange *changes,
1996                 size_t n_changes,
1997                 sd_bus_error *error) {
1998
1999         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
2000         bool bad = false, good = false;
2001         size_t i;
2002         int r;
2003
2004         if (unit_file_changes_have_modification(changes, n_changes)) {
2005                 r = bus_foreach_bus(m, NULL, send_unit_files_changed, NULL);
2006                 if (r < 0)
2007                         log_debug_errno(r, "Failed to send UnitFilesChanged signal: %m");
2008         }
2009
2010         r = sd_bus_message_new_method_return(message, &reply);
2011         if (r < 0)
2012                 goto fail;
2013
2014         if (carries_install_info >= 0) {
2015                 r = sd_bus_message_append(reply, "b", carries_install_info);
2016                 if (r < 0)
2017                         goto fail;
2018         }
2019
2020         r = sd_bus_message_open_container(reply, 'a', "(sss)");
2021         if (r < 0)
2022                 goto fail;
2023
2024         for (i = 0; i < n_changes; i++) {
2025
2026                 if (changes[i].type < 0) {
2027                         bad = true;
2028                         continue;
2029                 }
2030
2031                 r = sd_bus_message_append(
2032                                 reply, "(sss)",
2033                                 unit_file_change_type_to_string(changes[i].type),
2034                                 changes[i].path,
2035                                 changes[i].source);
2036                 if (r < 0)
2037                         goto fail;
2038
2039                 good = true;
2040         }
2041
2042         /* If there was a failed change, and no successful change, then return the first failure as proper method call
2043          * error. */
2044         if (bad && !good)
2045                 return install_error(error, 0, changes, n_changes);
2046
2047         r = sd_bus_message_close_container(reply);
2048         if (r < 0)
2049                 goto fail;
2050
2051         unit_file_changes_free(changes, n_changes);
2052         return sd_bus_send(NULL, reply, NULL);
2053
2054 fail:
2055         unit_file_changes_free(changes, n_changes);
2056         return r;
2057 }
2058
2059 static int method_enable_unit_files_generic(
2060                 sd_bus_message *message,
2061                 Manager *m,
2062                 int (*call)(UnitFileScope scope, UnitFileFlags flags, const char *root_dir, char *files[], UnitFileChange **changes, size_t *n_changes),
2063                 bool carries_install_info,
2064                 sd_bus_error *error) {
2065
2066         _cleanup_strv_free_ char **l = NULL;
2067         UnitFileChange *changes = NULL;
2068         size_t n_changes = 0;
2069         UnitFileFlags flags;
2070         int runtime, force, r;
2071
2072         assert(message);
2073         assert(m);
2074
2075         r = sd_bus_message_read_strv(message, &l);
2076         if (r < 0)
2077                 return r;
2078
2079         r = sd_bus_message_read(message, "bb", &runtime, &force);
2080         if (r < 0)
2081                 return r;
2082
2083         flags = unit_file_bools_to_flags(runtime, force);
2084
2085         r = bus_verify_manage_unit_files_async(m, message, error);
2086         if (r < 0)
2087                 return r;
2088         if (r == 0)
2089                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2090
2091         r = call(m->unit_file_scope, flags, NULL, l, &changes, &n_changes);
2092         if (r < 0)
2093                 return install_error(error, r, changes, n_changes);
2094
2095         return reply_unit_file_changes_and_free(m, message, carries_install_info ? r : -1, changes, n_changes, error);
2096 }
2097
2098 static int method_enable_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2099         return method_enable_unit_files_generic(message, userdata, unit_file_enable, true, error);
2100 }
2101
2102 static int method_reenable_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2103         return method_enable_unit_files_generic(message, userdata, unit_file_reenable, true, error);
2104 }
2105
2106 static int method_link_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2107         return method_enable_unit_files_generic(message, userdata, unit_file_link, false, error);
2108 }
2109
2110 static int unit_file_preset_without_mode(UnitFileScope scope, UnitFileFlags flags, const char *root_dir, char **files, UnitFileChange **changes, size_t *n_changes) {
2111         return unit_file_preset(scope, flags, root_dir, files, UNIT_FILE_PRESET_FULL, changes, n_changes);
2112 }
2113
2114 static int method_preset_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2115         return method_enable_unit_files_generic(message, userdata, unit_file_preset_without_mode, true, error);
2116 }
2117
2118 static int method_mask_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2119         return method_enable_unit_files_generic(message, userdata, unit_file_mask, false, error);
2120 }
2121
2122 static int method_preset_unit_files_with_mode(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2123
2124         _cleanup_strv_free_ char **l = NULL;
2125         UnitFileChange *changes = NULL;
2126         size_t n_changes = 0;
2127         Manager *m = userdata;
2128         UnitFilePresetMode mm;
2129         int runtime, force, r;
2130         UnitFileFlags flags;
2131         const char *mode;
2132
2133         assert(message);
2134         assert(m);
2135
2136         r = sd_bus_message_read_strv(message, &l);
2137         if (r < 0)
2138                 return r;
2139
2140         r = sd_bus_message_read(message, "sbb", &mode, &runtime, &force);
2141         if (r < 0)
2142                 return r;
2143
2144         flags = unit_file_bools_to_flags(runtime, force);
2145
2146         if (isempty(mode))
2147                 mm = UNIT_FILE_PRESET_FULL;
2148         else {
2149                 mm = unit_file_preset_mode_from_string(mode);
2150                 if (mm < 0)
2151                         return -EINVAL;
2152         }
2153
2154         r = bus_verify_manage_unit_files_async(m, message, error);
2155         if (r < 0)
2156                 return r;
2157         if (r == 0)
2158                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2159
2160         r = unit_file_preset(m->unit_file_scope, flags, NULL, l, mm, &changes, &n_changes);
2161         if (r < 0)
2162                 return install_error(error, r, changes, n_changes);
2163
2164         return reply_unit_file_changes_and_free(m, message, r, changes, n_changes, error);
2165 }
2166
2167 static int method_disable_unit_files_generic(
2168                 sd_bus_message *message,
2169                 Manager *m,
2170                 int (*call)(UnitFileScope scope, UnitFileFlags flags, const char *root_dir, char *files[], UnitFileChange **changes, size_t *n_changes),
2171                 sd_bus_error *error) {
2172
2173         _cleanup_strv_free_ char **l = NULL;
2174         UnitFileChange *changes = NULL;
2175         size_t n_changes = 0;
2176         int r, runtime;
2177
2178         assert(message);
2179         assert(m);
2180
2181         r = sd_bus_message_read_strv(message, &l);
2182         if (r < 0)
2183                 return r;
2184
2185         r = sd_bus_message_read(message, "b", &runtime);
2186         if (r < 0)
2187                 return r;
2188
2189         r = bus_verify_manage_unit_files_async(m, message, error);
2190         if (r < 0)
2191                 return r;
2192         if (r == 0)
2193                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2194
2195         r = call(m->unit_file_scope, runtime ? UNIT_FILE_RUNTIME : 0, NULL, l, &changes, &n_changes);
2196         if (r < 0)
2197                 return install_error(error, r, changes, n_changes);
2198
2199         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2200 }
2201
2202 static int method_disable_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2203         return method_disable_unit_files_generic(message, userdata, unit_file_disable, error);
2204 }
2205
2206 static int method_unmask_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2207         return method_disable_unit_files_generic(message, userdata, unit_file_unmask, error);
2208 }
2209
2210 static int method_revert_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2211         _cleanup_strv_free_ char **l = NULL;
2212         UnitFileChange *changes = NULL;
2213         size_t n_changes = 0;
2214         Manager *m = userdata;
2215         int r;
2216
2217         assert(message);
2218         assert(m);
2219
2220         r = sd_bus_message_read_strv(message, &l);
2221         if (r < 0)
2222                 return r;
2223
2224         r = bus_verify_manage_unit_files_async(m, message, error);
2225         if (r < 0)
2226                 return r;
2227         if (r == 0)
2228                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2229
2230         r = unit_file_revert(m->unit_file_scope, NULL, l, &changes, &n_changes);
2231         if (r < 0)
2232                 return install_error(error, r, changes, n_changes);
2233
2234         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2235 }
2236
2237 static int method_set_default_target(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2238         UnitFileChange *changes = NULL;
2239         size_t n_changes = 0;
2240         Manager *m = userdata;
2241         const char *name;
2242         int force, r;
2243
2244         assert(message);
2245         assert(m);
2246
2247         r = mac_selinux_access_check(message, "enable", error);
2248         if (r < 0)
2249                 return r;
2250
2251         r = sd_bus_message_read(message, "sb", &name, &force);
2252         if (r < 0)
2253                 return r;
2254
2255         r = bus_verify_manage_unit_files_async(m, message, error);
2256         if (r < 0)
2257                 return r;
2258         if (r == 0)
2259                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2260
2261         r = unit_file_set_default(m->unit_file_scope, force ? UNIT_FILE_FORCE : 0, NULL, name, &changes, &n_changes);
2262         if (r < 0)
2263                 return install_error(error, r, changes, n_changes);
2264
2265         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2266 }
2267
2268 static int method_preset_all_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2269         UnitFileChange *changes = NULL;
2270         size_t n_changes = 0;
2271         Manager *m = userdata;
2272         UnitFilePresetMode mm;
2273         const char *mode;
2274         UnitFileFlags flags;
2275         int force, runtime, r;
2276
2277         assert(message);
2278         assert(m);
2279
2280         r = mac_selinux_access_check(message, "enable", error);
2281         if (r < 0)
2282                 return r;
2283
2284         r = sd_bus_message_read(message, "sbb", &mode, &runtime, &force);
2285         if (r < 0)
2286                 return r;
2287
2288         flags = unit_file_bools_to_flags(runtime, force);
2289
2290         if (isempty(mode))
2291                 mm = UNIT_FILE_PRESET_FULL;
2292         else {
2293                 mm = unit_file_preset_mode_from_string(mode);
2294                 if (mm < 0)
2295                         return -EINVAL;
2296         }
2297
2298         r = bus_verify_manage_unit_files_async(m, message, error);
2299         if (r < 0)
2300                 return r;
2301         if (r == 0)
2302                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2303
2304         r = unit_file_preset_all(m->unit_file_scope, flags, NULL, mm, &changes, &n_changes);
2305         if (r < 0)
2306                 return install_error(error, r, changes, n_changes);
2307
2308         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2309 }
2310
2311 static int method_add_dependency_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2312         _cleanup_strv_free_ char **l = NULL;
2313         Manager *m = userdata;
2314         UnitFileChange *changes = NULL;
2315         size_t n_changes = 0;
2316         int runtime, force, r;
2317         char *target, *type;
2318         UnitDependency dep;
2319         UnitFileFlags flags;
2320
2321         assert(message);
2322         assert(m);
2323
2324         r = bus_verify_manage_unit_files_async(m, message, error);
2325         if (r < 0)
2326                 return r;
2327         if (r == 0)
2328                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2329
2330         r = sd_bus_message_read_strv(message, &l);
2331         if (r < 0)
2332                 return r;
2333
2334         r = sd_bus_message_read(message, "ssbb", &target, &type, &runtime, &force);
2335         if (r < 0)
2336                 return r;
2337
2338         flags = unit_file_bools_to_flags(runtime, force);
2339
2340         dep = unit_dependency_from_string(type);
2341         if (dep < 0)
2342                 return -EINVAL;
2343
2344         r = unit_file_add_dependency(m->unit_file_scope, flags, NULL, l, target, dep, &changes, &n_changes);
2345         if (r < 0)
2346                 return install_error(error, r, changes, n_changes);
2347
2348         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2349 }
2350
2351 static int method_get_unit_file_links(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2352         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
2353         UnitFileChange *changes = NULL;
2354         size_t n_changes = 0, i;
2355         UnitFileFlags flags;
2356         const char *name;
2357         char **p;
2358         int runtime, r;
2359
2360         r = sd_bus_message_read(message, "sb", &name, &runtime);
2361         if (r < 0)
2362                 return r;
2363
2364         r = sd_bus_message_new_method_return(message, &reply);
2365         if (r < 0)
2366                 return r;
2367
2368         r = sd_bus_message_open_container(reply, SD_BUS_TYPE_ARRAY, "s");
2369         if (r < 0)
2370                 return r;
2371
2372         p = STRV_MAKE(name);
2373         flags = UNIT_FILE_DRY_RUN |
2374                 (runtime ? UNIT_FILE_RUNTIME : 0);
2375
2376         r = unit_file_disable(UNIT_FILE_SYSTEM, flags, NULL, p, &changes, &n_changes);
2377         if (r < 0)
2378                 return log_error_errno(r, "Failed to get file links for %s: %m", name);
2379
2380         for (i = 0; i < n_changes; i++)
2381                 if (changes[i].type == UNIT_FILE_UNLINK) {
2382                         r = sd_bus_message_append(reply, "s", changes[i].path);
2383                         if (r < 0)
2384                                 return r;
2385                 }
2386
2387         r = sd_bus_message_close_container(reply);
2388         if (r < 0)
2389                 return r;
2390
2391         return sd_bus_send(NULL, reply, NULL);
2392 }
2393
2394 static int method_get_job_waiting(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2395         Manager *m = userdata;
2396         uint32_t id;
2397         Job *j;
2398         int r;
2399
2400         assert(message);
2401         assert(m);
2402
2403         r = sd_bus_message_read(message, "u", &id);
2404         if (r < 0)
2405                 return r;
2406
2407         j = manager_get_job(m, id);
2408         if (!j)
2409                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
2410
2411         return bus_job_method_get_waiting_jobs(message, j, error);
2412 }
2413
2414 const sd_bus_vtable bus_manager_vtable[] = {
2415         SD_BUS_VTABLE_START(0),
2416
2417         SD_BUS_PROPERTY("Version", "s", property_get_version, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2418         SD_BUS_PROPERTY("Features", "s", property_get_features, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2419         SD_BUS_PROPERTY("Virtualization", "s", property_get_virtualization, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2420         SD_BUS_PROPERTY("Architecture", "s", property_get_architecture, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2421         SD_BUS_PROPERTY("Tainted", "s", property_get_tainted, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2422         BUS_PROPERTY_DUAL_TIMESTAMP("FirmwareTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_FIRMWARE]), SD_BUS_VTABLE_PROPERTY_CONST),
2423         BUS_PROPERTY_DUAL_TIMESTAMP("LoaderTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_LOADER]), SD_BUS_VTABLE_PROPERTY_CONST),
2424         BUS_PROPERTY_DUAL_TIMESTAMP("KernelTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_KERNEL]), SD_BUS_VTABLE_PROPERTY_CONST),
2425         BUS_PROPERTY_DUAL_TIMESTAMP("InitRDTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_INITRD]), SD_BUS_VTABLE_PROPERTY_CONST),
2426         BUS_PROPERTY_DUAL_TIMESTAMP("UserspaceTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_USERSPACE]), SD_BUS_VTABLE_PROPERTY_CONST),
2427         BUS_PROPERTY_DUAL_TIMESTAMP("FinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2428         BUS_PROPERTY_DUAL_TIMESTAMP("SecurityStartTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_SECURITY_START]), SD_BUS_VTABLE_PROPERTY_CONST),
2429         BUS_PROPERTY_DUAL_TIMESTAMP("SecurityFinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_SECURITY_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2430         BUS_PROPERTY_DUAL_TIMESTAMP("GeneratorsStartTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_GENERATORS_START]), SD_BUS_VTABLE_PROPERTY_CONST),
2431         BUS_PROPERTY_DUAL_TIMESTAMP("GeneratorsFinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_GENERATORS_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2432         BUS_PROPERTY_DUAL_TIMESTAMP("UnitsLoadStartTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_UNITS_LOAD_START]), SD_BUS_VTABLE_PROPERTY_CONST),
2433         BUS_PROPERTY_DUAL_TIMESTAMP("UnitsLoadFinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_UNITS_LOAD_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2434         SD_BUS_WRITABLE_PROPERTY("LogLevel", "s", property_get_log_level, property_set_log_level, 0, 0),
2435         SD_BUS_WRITABLE_PROPERTY("LogTarget", "s", property_get_log_target, property_set_log_target, 0, 0),
2436         SD_BUS_PROPERTY("NNames", "u", property_get_n_names, 0, 0),
2437         SD_BUS_PROPERTY("NFailedUnits", "u", property_get_n_failed_units, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
2438         SD_BUS_PROPERTY("NJobs", "u", property_get_n_jobs, 0, 0),
2439         SD_BUS_PROPERTY("NInstalledJobs", "u", bus_property_get_unsigned, offsetof(Manager, n_installed_jobs), 0),
2440         SD_BUS_PROPERTY("NFailedJobs", "u", bus_property_get_unsigned, offsetof(Manager, n_failed_jobs), 0),
2441         SD_BUS_PROPERTY("Progress", "d", property_get_progress, 0, 0),
2442         SD_BUS_PROPERTY("Environment", "as", NULL, offsetof(Manager, environment), 0),
2443         SD_BUS_PROPERTY("ConfirmSpawn", "b", bus_property_get_bool, offsetof(Manager, confirm_spawn), SD_BUS_VTABLE_PROPERTY_CONST),
2444         SD_BUS_PROPERTY("ShowStatus", "b", bus_property_get_bool, offsetof(Manager, show_status), SD_BUS_VTABLE_PROPERTY_CONST),
2445         SD_BUS_PROPERTY("UnitPath", "as", NULL, offsetof(Manager, lookup_paths.search_path), SD_BUS_VTABLE_PROPERTY_CONST),
2446         SD_BUS_PROPERTY("DefaultStandardOutput", "s", bus_property_get_exec_output, offsetof(Manager, default_std_output), SD_BUS_VTABLE_PROPERTY_CONST),
2447         SD_BUS_PROPERTY("DefaultStandardError", "s", bus_property_get_exec_output, offsetof(Manager, default_std_output), SD_BUS_VTABLE_PROPERTY_CONST),
2448         SD_BUS_WRITABLE_PROPERTY("RuntimeWatchdogUSec", "t", bus_property_get_usec, property_set_runtime_watchdog, offsetof(Manager, runtime_watchdog), 0),
2449         SD_BUS_WRITABLE_PROPERTY("ShutdownWatchdogUSec", "t", bus_property_get_usec, bus_property_set_usec, offsetof(Manager, shutdown_watchdog), 0),
2450         SD_BUS_WRITABLE_PROPERTY("ServiceWatchdogs", "b", bus_property_get_bool, bus_property_set_bool, offsetof(Manager, service_watchdogs), 0),
2451         SD_BUS_PROPERTY("ControlGroup", "s", NULL, offsetof(Manager, cgroup_root), 0),
2452         SD_BUS_PROPERTY("SystemState", "s", property_get_system_state, 0, 0),
2453         SD_BUS_PROPERTY("ExitCode", "y", bus_property_get_unsigned, offsetof(Manager, return_value), 0),
2454         SD_BUS_PROPERTY("DefaultTimerAccuracyUSec", "t", bus_property_get_usec, offsetof(Manager, default_timer_accuracy_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2455         SD_BUS_PROPERTY("DefaultTimeoutStartUSec", "t", bus_property_get_usec, offsetof(Manager, default_timeout_start_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2456         SD_BUS_PROPERTY("DefaultTimeoutStopUSec", "t", bus_property_get_usec, offsetof(Manager, default_timeout_stop_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2457         SD_BUS_PROPERTY("DefaultRestartUSec", "t", bus_property_get_usec, offsetof(Manager, default_restart_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2458         SD_BUS_PROPERTY("DefaultStartLimitIntervalUSec", "t", bus_property_get_usec, offsetof(Manager, default_start_limit_interval), SD_BUS_VTABLE_PROPERTY_CONST),
2459         /* The following two items are obsolete alias */
2460         SD_BUS_PROPERTY("DefaultStartLimitIntervalSec", "t", bus_property_get_usec, offsetof(Manager, default_start_limit_interval), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
2461         SD_BUS_PROPERTY("DefaultStartLimitInterval", "t", bus_property_get_usec, offsetof(Manager, default_start_limit_interval), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
2462         SD_BUS_PROPERTY("DefaultStartLimitBurst", "u", bus_property_get_unsigned, offsetof(Manager, default_start_limit_burst), SD_BUS_VTABLE_PROPERTY_CONST),
2463         SD_BUS_PROPERTY("DefaultCPUAccounting", "b", bus_property_get_bool, offsetof(Manager, default_cpu_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
2464         SD_BUS_PROPERTY("DefaultBlockIOAccounting", "b", bus_property_get_bool, offsetof(Manager, default_blockio_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
2465         SD_BUS_PROPERTY("DefaultMemoryAccounting", "b", bus_property_get_bool, offsetof(Manager, default_memory_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
2466         SD_BUS_PROPERTY("DefaultTasksAccounting", "b", bus_property_get_bool, offsetof(Manager, default_tasks_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
2467         SD_BUS_PROPERTY("DefaultLimitCPU", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CPU]), SD_BUS_VTABLE_PROPERTY_CONST),
2468         SD_BUS_PROPERTY("DefaultLimitCPUSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CPU]), SD_BUS_VTABLE_PROPERTY_CONST),
2469         SD_BUS_PROPERTY("DefaultLimitFSIZE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_FSIZE]), SD_BUS_VTABLE_PROPERTY_CONST),
2470         SD_BUS_PROPERTY("DefaultLimitFSIZESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_FSIZE]), SD_BUS_VTABLE_PROPERTY_CONST),
2471         SD_BUS_PROPERTY("DefaultLimitDATA", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_DATA]), SD_BUS_VTABLE_PROPERTY_CONST),
2472         SD_BUS_PROPERTY("DefaultLimitDATASoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_DATA]), SD_BUS_VTABLE_PROPERTY_CONST),
2473         SD_BUS_PROPERTY("DefaultLimitSTACK", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_STACK]), SD_BUS_VTABLE_PROPERTY_CONST),
2474         SD_BUS_PROPERTY("DefaultLimitSTACKSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_STACK]), SD_BUS_VTABLE_PROPERTY_CONST),
2475         SD_BUS_PROPERTY("DefaultLimitCORE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CORE]), SD_BUS_VTABLE_PROPERTY_CONST),
2476         SD_BUS_PROPERTY("DefaultLimitCORESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CORE]), SD_BUS_VTABLE_PROPERTY_CONST),
2477         SD_BUS_PROPERTY("DefaultLimitRSS", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RSS]), SD_BUS_VTABLE_PROPERTY_CONST),
2478         SD_BUS_PROPERTY("DefaultLimitRSSSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RSS]), SD_BUS_VTABLE_PROPERTY_CONST),
2479         SD_BUS_PROPERTY("DefaultLimitNOFILE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NOFILE]), SD_BUS_VTABLE_PROPERTY_CONST),
2480         SD_BUS_PROPERTY("DefaultLimitNOFILESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NOFILE]), SD_BUS_VTABLE_PROPERTY_CONST),
2481         SD_BUS_PROPERTY("DefaultLimitAS", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_AS]), SD_BUS_VTABLE_PROPERTY_CONST),
2482         SD_BUS_PROPERTY("DefaultLimitASSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_AS]), SD_BUS_VTABLE_PROPERTY_CONST),
2483         SD_BUS_PROPERTY("DefaultLimitNPROC", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NPROC]), SD_BUS_VTABLE_PROPERTY_CONST),
2484         SD_BUS_PROPERTY("DefaultLimitNPROCSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NPROC]), SD_BUS_VTABLE_PROPERTY_CONST),
2485         SD_BUS_PROPERTY("DefaultLimitMEMLOCK", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MEMLOCK]), SD_BUS_VTABLE_PROPERTY_CONST),
2486         SD_BUS_PROPERTY("DefaultLimitMEMLOCKSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MEMLOCK]), SD_BUS_VTABLE_PROPERTY_CONST),
2487         SD_BUS_PROPERTY("DefaultLimitLOCKS", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_LOCKS]), SD_BUS_VTABLE_PROPERTY_CONST),
2488         SD_BUS_PROPERTY("DefaultLimitLOCKSSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_LOCKS]), SD_BUS_VTABLE_PROPERTY_CONST),
2489         SD_BUS_PROPERTY("DefaultLimitSIGPENDING", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_SIGPENDING]), SD_BUS_VTABLE_PROPERTY_CONST),
2490         SD_BUS_PROPERTY("DefaultLimitSIGPENDINGSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_SIGPENDING]), SD_BUS_VTABLE_PROPERTY_CONST),
2491         SD_BUS_PROPERTY("DefaultLimitMSGQUEUE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MSGQUEUE]), SD_BUS_VTABLE_PROPERTY_CONST),
2492         SD_BUS_PROPERTY("DefaultLimitMSGQUEUESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MSGQUEUE]), SD_BUS_VTABLE_PROPERTY_CONST),
2493         SD_BUS_PROPERTY("DefaultLimitNICE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NICE]), SD_BUS_VTABLE_PROPERTY_CONST),
2494         SD_BUS_PROPERTY("DefaultLimitNICESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NICE]), SD_BUS_VTABLE_PROPERTY_CONST),
2495         SD_BUS_PROPERTY("DefaultLimitRTPRIO", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTPRIO]), SD_BUS_VTABLE_PROPERTY_CONST),
2496         SD_BUS_PROPERTY("DefaultLimitRTPRIOSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTPRIO]), SD_BUS_VTABLE_PROPERTY_CONST),
2497         SD_BUS_PROPERTY("DefaultLimitRTTIME", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTTIME]), SD_BUS_VTABLE_PROPERTY_CONST),
2498         SD_BUS_PROPERTY("DefaultLimitRTTIMESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTTIME]), SD_BUS_VTABLE_PROPERTY_CONST),
2499         SD_BUS_PROPERTY("DefaultTasksMax", "t", NULL, offsetof(Manager, default_tasks_max), SD_BUS_VTABLE_PROPERTY_CONST),
2500         SD_BUS_PROPERTY("TimerSlackNSec", "t", property_get_timer_slack_nsec, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2501
2502         SD_BUS_METHOD("GetUnit", "s", "o", method_get_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2503         SD_BUS_METHOD("GetUnitByPID", "u", "o", method_get_unit_by_pid, SD_BUS_VTABLE_UNPRIVILEGED),
2504         SD_BUS_METHOD("GetUnitByInvocationID", "ay", "o", method_get_unit_by_invocation_id, SD_BUS_VTABLE_UNPRIVILEGED),
2505         SD_BUS_METHOD("GetUnitByControlGroup", "s", "o", method_get_unit_by_control_group, SD_BUS_VTABLE_UNPRIVILEGED),
2506         SD_BUS_METHOD("LoadUnit", "s", "o", method_load_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2507         SD_BUS_METHOD("StartUnit", "ss", "o", method_start_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2508         SD_BUS_METHOD("StartUnitReplace", "sss", "o", method_start_unit_replace, SD_BUS_VTABLE_UNPRIVILEGED),
2509         SD_BUS_METHOD("StopUnit", "ss", "o", method_stop_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2510         SD_BUS_METHOD("ReloadUnit", "ss", "o", method_reload_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2511         SD_BUS_METHOD("RestartUnit", "ss", "o", method_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2512         SD_BUS_METHOD("TryRestartUnit", "ss", "o", method_try_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2513         SD_BUS_METHOD("ReloadOrRestartUnit", "ss", "o", method_reload_or_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2514         SD_BUS_METHOD("ReloadOrTryRestartUnit", "ss", "o", method_reload_or_try_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2515         SD_BUS_METHOD("KillUnit", "ssi", NULL, method_kill_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2516         SD_BUS_METHOD("ResetFailedUnit", "s", NULL, method_reset_failed_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2517         SD_BUS_METHOD("SetUnitProperties", "sba(sv)", NULL, method_set_unit_properties, SD_BUS_VTABLE_UNPRIVILEGED),
2518         SD_BUS_METHOD("RefUnit", "s", NULL, method_ref_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2519         SD_BUS_METHOD("UnrefUnit", "s", NULL, method_unref_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2520         SD_BUS_METHOD("StartTransientUnit", "ssa(sv)a(sa(sv))", "o", method_start_transient_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2521         SD_BUS_METHOD("GetUnitProcesses", "s", "a(sus)", method_get_unit_processes, SD_BUS_VTABLE_UNPRIVILEGED),
2522         SD_BUS_METHOD("AttachProcessesToUnit", "ssau", NULL, method_attach_processes_to_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2523         SD_BUS_METHOD("GetJob", "u", "o", method_get_job, SD_BUS_VTABLE_UNPRIVILEGED),
2524         SD_BUS_METHOD("GetJobAfter", "u", "a(usssoo)", method_get_job_waiting, SD_BUS_VTABLE_UNPRIVILEGED),
2525         SD_BUS_METHOD("GetJobBefore", "u", "a(usssoo)", method_get_job_waiting, SD_BUS_VTABLE_UNPRIVILEGED),
2526         SD_BUS_METHOD("CancelJob", "u", NULL, method_cancel_job, SD_BUS_VTABLE_UNPRIVILEGED),
2527         SD_BUS_METHOD("ClearJobs", NULL, NULL, method_clear_jobs, SD_BUS_VTABLE_UNPRIVILEGED),
2528         SD_BUS_METHOD("ResetFailed", NULL, NULL, method_reset_failed, SD_BUS_VTABLE_UNPRIVILEGED),
2529         SD_BUS_METHOD("ListUnits", NULL, "a(ssssssouso)", method_list_units, SD_BUS_VTABLE_UNPRIVILEGED),
2530         SD_BUS_METHOD("ListUnitsFiltered", "as", "a(ssssssouso)", method_list_units_filtered, SD_BUS_VTABLE_UNPRIVILEGED),
2531         SD_BUS_METHOD("ListUnitsByPatterns", "asas", "a(ssssssouso)", method_list_units_by_patterns, SD_BUS_VTABLE_UNPRIVILEGED),
2532         SD_BUS_METHOD("ListUnitsByNames", "as", "a(ssssssouso)", method_list_units_by_names, SD_BUS_VTABLE_UNPRIVILEGED),
2533         SD_BUS_METHOD("ListJobs", NULL, "a(usssoo)", method_list_jobs, SD_BUS_VTABLE_UNPRIVILEGED),
2534         SD_BUS_METHOD("Subscribe", NULL, NULL, method_subscribe, SD_BUS_VTABLE_UNPRIVILEGED),
2535         SD_BUS_METHOD("Unsubscribe", NULL, NULL, method_unsubscribe, SD_BUS_VTABLE_UNPRIVILEGED),
2536         SD_BUS_METHOD("Dump", NULL, "s", method_dump, SD_BUS_VTABLE_UNPRIVILEGED),
2537         SD_BUS_METHOD("DumpByFileDescriptor", NULL, "h", method_dump_by_fd, SD_BUS_VTABLE_UNPRIVILEGED),
2538         SD_BUS_METHOD("CreateSnapshot", "sb", "o", method_refuse_snapshot, SD_BUS_VTABLE_UNPRIVILEGED|SD_BUS_VTABLE_HIDDEN),
2539         SD_BUS_METHOD("RemoveSnapshot", "s", NULL, method_refuse_snapshot, SD_BUS_VTABLE_UNPRIVILEGED|SD_BUS_VTABLE_HIDDEN),
2540         SD_BUS_METHOD("Reload", NULL, NULL, method_reload, SD_BUS_VTABLE_UNPRIVILEGED),
2541         SD_BUS_METHOD("Reexecute", NULL, NULL, method_reexecute, SD_BUS_VTABLE_UNPRIVILEGED),
2542         SD_BUS_METHOD("Exit", NULL, NULL, method_exit, 0),
2543         SD_BUS_METHOD("Reboot", NULL, NULL, method_reboot, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2544         SD_BUS_METHOD("PowerOff", NULL, NULL, method_poweroff, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2545         SD_BUS_METHOD("Halt", NULL, NULL, method_halt, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2546         SD_BUS_METHOD("KExec", NULL, NULL, method_kexec, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2547         SD_BUS_METHOD("SwitchRoot", "ss", NULL, method_switch_root, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2548         SD_BUS_METHOD("SetEnvironment", "as", NULL, method_set_environment, SD_BUS_VTABLE_UNPRIVILEGED),
2549         SD_BUS_METHOD("UnsetEnvironment", "as", NULL, method_unset_environment, SD_BUS_VTABLE_UNPRIVILEGED),
2550         SD_BUS_METHOD("UnsetAndSetEnvironment", "asas", NULL, method_unset_and_set_environment, SD_BUS_VTABLE_UNPRIVILEGED),
2551         SD_BUS_METHOD("ListUnitFiles", NULL, "a(ss)", method_list_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2552         SD_BUS_METHOD("ListUnitFilesByPatterns", "asas", "a(ss)", method_list_unit_files_by_patterns, SD_BUS_VTABLE_UNPRIVILEGED),
2553         SD_BUS_METHOD("GetUnitFileState", "s", "s", method_get_unit_file_state, SD_BUS_VTABLE_UNPRIVILEGED),
2554         SD_BUS_METHOD("EnableUnitFiles", "asbb", "ba(sss)", method_enable_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2555         SD_BUS_METHOD("DisableUnitFiles", "asb", "a(sss)", method_disable_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2556         SD_BUS_METHOD("ReenableUnitFiles", "asbb", "ba(sss)", method_reenable_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2557         SD_BUS_METHOD("LinkUnitFiles", "asbb", "a(sss)", method_link_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2558         SD_BUS_METHOD("PresetUnitFiles", "asbb", "ba(sss)", method_preset_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2559         SD_BUS_METHOD("PresetUnitFilesWithMode", "assbb", "ba(sss)", method_preset_unit_files_with_mode, SD_BUS_VTABLE_UNPRIVILEGED),
2560         SD_BUS_METHOD("MaskUnitFiles", "asbb", "a(sss)", method_mask_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2561         SD_BUS_METHOD("UnmaskUnitFiles", "asb", "a(sss)", method_unmask_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2562         SD_BUS_METHOD("RevertUnitFiles", "as", "a(sss)", method_revert_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2563         SD_BUS_METHOD("SetDefaultTarget", "sb", "a(sss)", method_set_default_target, SD_BUS_VTABLE_UNPRIVILEGED),
2564         SD_BUS_METHOD("GetDefaultTarget", NULL, "s", method_get_default_target, SD_BUS_VTABLE_UNPRIVILEGED),
2565         SD_BUS_METHOD("PresetAllUnitFiles", "sbb", "a(sss)", method_preset_all_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2566         SD_BUS_METHOD("AddDependencyUnitFiles", "asssbb", "a(sss)", method_add_dependency_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2567         SD_BUS_METHOD("GetUnitFileLinks", "sb", "as", method_get_unit_file_links, SD_BUS_VTABLE_UNPRIVILEGED),
2568         SD_BUS_METHOD("SetExitCode", "y", NULL, method_set_exit_code, SD_BUS_VTABLE_UNPRIVILEGED),
2569         SD_BUS_METHOD("LookupDynamicUserByName", "s", "u", method_lookup_dynamic_user_by_name, SD_BUS_VTABLE_UNPRIVILEGED),
2570         SD_BUS_METHOD("LookupDynamicUserByUID", "u", "s", method_lookup_dynamic_user_by_uid, SD_BUS_VTABLE_UNPRIVILEGED),
2571         SD_BUS_METHOD("GetDynamicUsers", NULL, "a(us)", method_get_dynamic_users, SD_BUS_VTABLE_UNPRIVILEGED),
2572
2573         SD_BUS_SIGNAL("UnitNew", "so", 0),
2574         SD_BUS_SIGNAL("UnitRemoved", "so", 0),
2575         SD_BUS_SIGNAL("JobNew", "uos", 0),
2576         SD_BUS_SIGNAL("JobRemoved", "uoss", 0),
2577         SD_BUS_SIGNAL("StartupFinished", "tttttt", 0),
2578         SD_BUS_SIGNAL("UnitFilesChanged", NULL, 0),
2579         SD_BUS_SIGNAL("Reloading", "b", 0),
2580
2581         SD_BUS_VTABLE_END
2582 };
2583
2584 static int send_finished(sd_bus *bus, void *userdata) {
2585         _cleanup_(sd_bus_message_unrefp) sd_bus_message *message = NULL;
2586         usec_t *times = userdata;
2587         int r;
2588
2589         assert(bus);
2590         assert(times);
2591
2592         r = sd_bus_message_new_signal(bus, &message, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "StartupFinished");
2593         if (r < 0)
2594                 return r;
2595
2596         r = sd_bus_message_append(message, "tttttt", times[0], times[1], times[2], times[3], times[4], times[5]);
2597         if (r < 0)
2598                 return r;
2599
2600         return sd_bus_send(bus, message, NULL);
2601 }
2602
2603 void bus_manager_send_finished(
2604                 Manager *m,
2605                 usec_t firmware_usec,
2606                 usec_t loader_usec,
2607                 usec_t kernel_usec,
2608                 usec_t initrd_usec,
2609                 usec_t userspace_usec,
2610                 usec_t total_usec) {
2611
2612         int r;
2613
2614         assert(m);
2615
2616         r = bus_foreach_bus(
2617                         m,
2618                         NULL,
2619                         send_finished,
2620                         (usec_t[6]) {
2621                                 firmware_usec,
2622                                 loader_usec,
2623                                 kernel_usec,
2624                                 initrd_usec,
2625                                 userspace_usec,
2626                                 total_usec
2627                         });
2628         if (r < 0)
2629                 log_debug_errno(r, "Failed to send finished signal: %m");
2630 }
2631
2632 static int send_reloading(sd_bus *bus, void *userdata) {
2633         _cleanup_(sd_bus_message_unrefp) sd_bus_message *message = NULL;
2634         int r;
2635
2636         assert(bus);
2637
2638         r = sd_bus_message_new_signal(bus, &message, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "Reloading");
2639         if (r < 0)
2640                 return r;
2641
2642         r = sd_bus_message_append(message, "b", PTR_TO_INT(userdata));
2643         if (r < 0)
2644                 return r;
2645
2646         return sd_bus_send(bus, message, NULL);
2647 }
2648
2649 void bus_manager_send_reloading(Manager *m, bool active) {
2650         int r;
2651
2652         assert(m);
2653
2654         r = bus_foreach_bus(m, NULL, send_reloading, INT_TO_PTR(active));
2655         if (r < 0)
2656                 log_debug_errno(r, "Failed to send reloading signal: %m");
2657 }
2658
2659 static int send_changed_signal(sd_bus *bus, void *userdata) {
2660         assert(bus);
2661
2662         return sd_bus_emit_properties_changed_strv(bus,
2663                                                    "/org/freedesktop/systemd1",
2664                                                    "org.freedesktop.systemd1.Manager",
2665                                                    NULL);
2666 }
2667
2668 void bus_manager_send_change_signal(Manager *m) {
2669         int r;
2670
2671         assert(m);
2672
2673         r = bus_foreach_bus(m, NULL, send_changed_signal, NULL);
2674         if (r < 0)
2675                 log_debug_errno(r, "Failed to send manager change signal: %m");
2676 }