src/core/dbus-manager.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include <errno.h>
   4 #include <sys/prctl.h>
   5 #include <sys/statvfs.h>
   6 #include <unistd.h>
   7
   8 #include "alloc-util.h"
   9 #include "architecture.h"
  10 #include "build.h"
  11 #include "bus-common-errors.h"
  12 #include "dbus-execute.h"
  13 #include "dbus-job.h"
  14 #include "dbus-manager.h"
  15 #include "dbus-scope.h"
  16 #include "dbus-unit.h"
  17 #include "dbus.h"
  18 #include "env-util.h"
  19 #include "fd-util.h"
  20 #include "fileio.h"
  21 #include "format-util.h"
  22 #include "fs-util.h"
  23 #include "install.h"
  24 #include "log.h"
  25 #include "os-util.h"
  26 #include "parse-util.h"
  27 #include "path-util.h"
  28 #include "selinux-access.h"
  29 #include "stat-util.h"
  30 #include "string-util.h"
  31 #include "strv.h"
  32 #include "syslog-util.h"
  33 #include "user-util.h"
  34 #include "virt.h"
  35 #include "watchdog.h"
  36
  37 /* Require 16MiB free in /run/systemd for reloading/reexecing. After all we need to serialize our state there, and if
  38  * we can't we'll fail badly. */
  39 #define RELOAD_DISK_SPACE_MIN (UINT64_C(16) * UINT64_C(1024) * UINT64_C(1024))
  40
  41 static UnitFileFlags unit_file_bools_to_flags(bool runtime, bool force) {
  42         return (runtime ? UNIT_FILE_RUNTIME : 0) |
  43                (force   ? UNIT_FILE_FORCE   : 0);
  44 }
  45
  46 BUS_DEFINE_PROPERTY_GET_ENUM(bus_property_get_oom_policy, oom_policy, OOMPolicy);
  47
  48 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_version, "s", GIT_VERSION);
  49 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_features, "s", SYSTEMD_FEATURES);
  50 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_architecture, "s", architecture_to_string(uname_architecture()));
  51 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_log_target, "s", log_target_to_string(log_get_target()));
  52 static BUS_DEFINE_PROPERTY_GET2(property_get_system_state, "s", Manager, manager_state, manager_state_to_string);
  53 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_timer_slack_nsec, "t", (uint64_t) prctl(PR_GET_TIMERSLACK));
  54 static BUS_DEFINE_PROPERTY_GET_REF(property_get_hashmap_size, "u", Hashmap *, hashmap_size);
  55 static BUS_DEFINE_PROPERTY_GET_REF(property_get_set_size, "u", Set *, set_size);
  56 static BUS_DEFINE_PROPERTY_GET(property_get_default_timeout_abort_usec, "t", Manager, manager_default_timeout_abort_usec);
  57
  58 static int property_get_virtualization(
  59                 sd_bus *bus,
  60                 const char *path,
  61                 const char *interface,
  62                 const char *property,
  63                 sd_bus_message *reply,
  64                 void *userdata,
  65                 sd_bus_error *error) {
  66
  67         int v;
  68
  69         assert(bus);
  70         assert(reply);
  71
  72         v = detect_virtualization();
  73
  74         /* Make sure to return the empty string when we detect no virtualization, as that is the API.
  75          *
  76          * https://github.com/systemd/systemd/issues/1423
  77          */
  78
  79         return sd_bus_message_append(
  80                         reply, "s",
  81                         v == VIRTUALIZATION_NONE ? NULL : virtualization_to_string(v));
  82 }
  83
  84 static int property_get_tainted(
  85                 sd_bus *bus,
  86                 const char *path,
  87                 const char *interface,
  88                 const char *property,
  89                 sd_bus_message *reply,
  90                 void *userdata,
  91                 sd_bus_error *error) {
  92
  93         _cleanup_free_ char *s = NULL;
  94         Manager *m = userdata;
  95
  96         assert(bus);
  97         assert(reply);
  98         assert(m);
  99
 100         s = manager_taint_string(m);
 101         if (!s)
 102                 return log_oom();
 103
 104         return sd_bus_message_append(reply, "s", s);
 105 }
 106
 107 static int property_set_log_target(
 108                 sd_bus *bus,
 109                 const char *path,
 110                 const char *interface,
 111                 const char *property,
 112                 sd_bus_message *value,
 113                 void *userdata,
 114                 sd_bus_error *error) {
 115
 116         Manager *m = userdata;
 117         const char *t;
 118         int r;
 119
 120         assert(bus);
 121         assert(value);
 122
 123         r = sd_bus_message_read(value, "s", &t);
 124         if (r < 0)
 125                 return r;
 126
 127         if (isempty(t))
 128                 manager_restore_original_log_target(m);
 129         else {
 130                 LogTarget target;
 131
 132                 target = log_target_from_string(t);
 133                 if (target < 0)
 134                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid log target '%s'", t);
 135
 136                 manager_override_log_target(m, target);
 137         }
 138
 139         return 0;
 140 }
 141
 142 static int property_get_log_level(
 143                 sd_bus *bus,
 144                 const char *path,
 145                 const char *interface,
 146                 const char *property,
 147                 sd_bus_message *reply,
 148                 void *userdata,
 149                 sd_bus_error *error) {
 150
 151         _cleanup_free_ char *t = NULL;
 152         int r;
 153
 154         assert(bus);
 155         assert(reply);
 156
 157         r = log_level_to_string_alloc(log_get_max_level(), &t);
 158         if (r < 0)
 159                 return r;
 160
 161         return sd_bus_message_append(reply, "s", t);
 162 }
 163
 164 static int property_set_log_level(
 165                 sd_bus *bus,
 166                 const char *path,
 167                 const char *interface,
 168                 const char *property,
 169                 sd_bus_message *value,
 170                 void *userdata,
 171                 sd_bus_error *error) {
 172
 173         Manager *m = userdata;
 174         const char *t;
 175         int r;
 176
 177         assert(bus);
 178         assert(value);
 179
 180         r = sd_bus_message_read(value, "s", &t);
 181         if (r < 0)
 182                 return r;
 183
 184         if (isempty(t))
 185                 manager_restore_original_log_level(m);
 186         else {
 187                 int level;
 188
 189                 level = log_level_from_string(t);
 190                 if (level < 0)
 191                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid log level '%s'", t);
 192
 193                 manager_override_log_level(m, level);
 194         }
 195
 196         return 0;
 197 }
 198
 199 static int property_get_progress(
 200                 sd_bus *bus,
 201                 const char *path,
 202                 const char *interface,
 203                 const char *property,
 204                 sd_bus_message *reply,
 205                 void *userdata,
 206                 sd_bus_error *error) {
 207
 208         Manager *m = userdata;
 209         double d;
 210
 211         assert(bus);
 212         assert(reply);
 213         assert(m);
 214
 215         if (MANAGER_IS_FINISHED(m))
 216                 d = 1.0;
 217         else
 218                 d = 1.0 - ((double) hashmap_size(m->jobs) / (double) m->n_installed_jobs);
 219
 220         return sd_bus_message_append(reply, "d", d);
 221 }
 222
 223 static int property_get_environment(
 224                 sd_bus *bus,
 225                 const char *path,
 226                 const char *interface,
 227                 const char *property,
 228                 sd_bus_message *reply,
 229                 void *userdata,
 230                 sd_bus_error *error) {
 231
 232         _cleanup_strv_free_ char **l = NULL;
 233         Manager *m = userdata;
 234         int r;
 235
 236         assert(bus);
 237         assert(reply);
 238         assert(m);
 239
 240         r = manager_get_effective_environment(m, &l);
 241         if (r < 0)
 242                 return r;
 243
 244         return sd_bus_message_append_strv(reply, l);
 245 }
 246
 247 static int property_get_show_status(
 248                 sd_bus *bus,
 249                 const char *path,
 250                 const char *interface,
 251                 const char *property,
 252                 sd_bus_message *reply,
 253                 void *userdata,
 254                 sd_bus_error *error) {
 255
 256         Manager *m = userdata;
 257         int b;
 258
 259         assert(bus);
 260         assert(reply);
 261         assert(m);
 262
 263         b = IN_SET(m->show_status, SHOW_STATUS_TEMPORARY, SHOW_STATUS_YES);
 264         return sd_bus_message_append_basic(reply, 'b', &b);
 265 }
 266
 267 static int property_set_runtime_watchdog(
 268                 sd_bus *bus,
 269                 const char *path,
 270                 const char *interface,
 271                 const char *property,
 272                 sd_bus_message *value,
 273                 void *userdata,
 274                 sd_bus_error *error) {
 275
 276         usec_t *t = userdata;
 277         int r;
 278
 279         assert(bus);
 280         assert(value);
 281
 282         assert_cc(sizeof(usec_t) == sizeof(uint64_t));
 283
 284         r = sd_bus_message_read(value, "t", t);
 285         if (r < 0)
 286                 return r;
 287
 288         return watchdog_set_timeout(t);
 289 }
 290
 291 static int bus_get_unit_by_name(Manager *m, sd_bus_message *message, const char *name, Unit **ret_unit, sd_bus_error *error) {
 292         Unit *u;
 293         int r;
 294
 295         assert(m);
 296         assert(message);
 297         assert(ret_unit);
 298
 299         /* More or less a wrapper around manager_get_unit() that generates nice errors and has one trick up its sleeve:
 300          * if the name is specified empty we use the client's unit. */
 301
 302         if (isempty(name)) {
 303                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 304                 pid_t pid;
 305
 306                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 307                 if (r < 0)
 308                         return r;
 309
 310                 r = sd_bus_creds_get_pid(creds, &pid);
 311                 if (r < 0)
 312                         return r;
 313
 314                 u = manager_get_unit_by_pid(m, pid);
 315                 if (!u)
 316                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Client not member of any unit.");
 317         } else {
 318                 u = manager_get_unit(m, name);
 319                 if (!u)
 320                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s not loaded.", name);
 321         }
 322
 323         *ret_unit = u;
 324         return 0;
 325 }
 326
 327 static int bus_load_unit_by_name(Manager *m, sd_bus_message *message, const char *name, Unit **ret_unit, sd_bus_error *error) {
 328         assert(m);
 329         assert(message);
 330         assert(ret_unit);
 331
 332         /* Pretty much the same as bus_get_unit_by_name(), but we also load the unit if necessary. */
 333
 334         if (isempty(name))
 335                 return bus_get_unit_by_name(m, message, name, ret_unit, error);
 336
 337         return manager_load_unit(m, name, NULL, error, ret_unit);
 338 }
 339
 340 static int reply_unit_path(Unit *u, sd_bus_message *message, sd_bus_error *error) {
 341         _cleanup_free_ char *path = NULL;
 342         int r;
 343
 344         assert(u);
 345         assert(message);
 346
 347         r = mac_selinux_unit_access_check(u, message, "status", error);
 348         if (r < 0)
 349                 return r;
 350
 351         path = unit_dbus_path(u);
 352         if (!path)
 353                 return log_oom();
 354
 355         return sd_bus_reply_method_return(message, "o", path);
 356 }
 357
 358 static int method_get_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 359         Manager *m = userdata;
 360         const char *name;
 361         Unit *u;
 362         int r;
 363
 364         assert(message);
 365         assert(m);
 366
 367         /* Anyone can call this method */
 368
 369         r = sd_bus_message_read(message, "s", &name);
 370         if (r < 0)
 371                 return r;
 372
 373         r = bus_get_unit_by_name(m, message, name, &u, error);
 374         if (r < 0)
 375                 return r;
 376
 377         return reply_unit_path(u, message, error);
 378 }
 379
 380 static int method_get_unit_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 381         Manager *m = userdata;
 382         pid_t pid;
 383         Unit *u;
 384         int r;
 385
 386         assert(message);
 387         assert(m);
 388
 389         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 390
 391         /* Anyone can call this method */
 392
 393         r = sd_bus_message_read(message, "u", &pid);
 394         if (r < 0)
 395                 return r;
 396         if (pid < 0)
 397                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid PID " PID_FMT, pid);
 398
 399         if (pid == 0) {
 400                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 401
 402                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 403                 if (r < 0)
 404                         return r;
 405
 406                 r = sd_bus_creds_get_pid(creds, &pid);
 407                 if (r < 0)
 408                         return r;
 409         }
 410
 411         u = manager_get_unit_by_pid(m, pid);
 412         if (!u)
 413                 return sd_bus_error_setf(error, BUS_ERROR_NO_UNIT_FOR_PID, "PID "PID_FMT" does not belong to any loaded unit.", pid);
 414
 415         return reply_unit_path(u, message, error);
 416 }
 417
 418 static int method_get_unit_by_invocation_id(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 419         _cleanup_free_ char *path = NULL;
 420         Manager *m = userdata;
 421         sd_id128_t id;
 422         const void *a;
 423         Unit *u;
 424         size_t sz;
 425         int r;
 426
 427         assert(message);
 428         assert(m);
 429
 430         /* Anyone can call this method */
 431
 432         r = sd_bus_message_read_array(message, 'y', &a, &sz);
 433         if (r < 0)
 434                 return r;
 435         if (sz == 0)
 436                 id = SD_ID128_NULL;
 437         else if (sz == 16)
 438                 memcpy(&id, a, sz);
 439         else
 440                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid invocation ID");
 441
 442         if (sd_id128_is_null(id)) {
 443                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 444                 pid_t pid;
 445
 446                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 447                 if (r < 0)
 448                         return r;
 449
 450                 r = sd_bus_creds_get_pid(creds, &pid);
 451                 if (r < 0)
 452                         return r;
 453
 454                 u = manager_get_unit_by_pid(m, pid);
 455                 if (!u)
 456                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Client " PID_FMT " not member of any unit.", pid);
 457         } else {
 458                 u = hashmap_get(m->units_by_invocation_id, &id);
 459                 if (!u)
 460                         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));
 461         }
 462
 463         r = mac_selinux_unit_access_check(u, message, "status", error);
 464         if (r < 0)
 465                 return r;
 466
 467         /* So here's a special trick: the bus path we return actually references the unit by its invocation ID instead
 468          * of the unit name. This means it stays valid only as long as the invocation ID stays the same. */
 469         path = unit_dbus_path_invocation_id(u);
 470         if (!path)
 471                 return -ENOMEM;
 472
 473         return sd_bus_reply_method_return(message, "o", path);
 474 }
 475
 476 static int method_get_unit_by_control_group(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 477         Manager *m = userdata;
 478         const char *cgroup;
 479         Unit *u;
 480         int r;
 481
 482         r = sd_bus_message_read(message, "s", &cgroup);
 483         if (r < 0)
 484                 return r;
 485
 486         u = manager_get_unit_by_cgroup(m, cgroup);
 487         if (!u)
 488                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Control group '%s' is not valid or not managed by this instance", cgroup);
 489
 490         return reply_unit_path(u, message, error);
 491 }
 492
 493 static int method_load_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 494         Manager *m = userdata;
 495         const char *name;
 496         Unit *u;
 497         int r;
 498
 499         assert(message);
 500         assert(m);
 501
 502         /* Anyone can call this method */
 503
 504         r = sd_bus_message_read(message, "s", &name);
 505         if (r < 0)
 506                 return r;
 507
 508         r = bus_load_unit_by_name(m, message, name, &u, error);
 509         if (r < 0)
 510                 return r;
 511
 512         return reply_unit_path(u, message, error);
 513 }
 514
 515 static int method_start_unit_generic(sd_bus_message *message, Manager *m, JobType job_type, bool reload_if_possible, sd_bus_error *error) {
 516         const char *name;
 517         Unit *u;
 518         int r;
 519
 520         assert(message);
 521         assert(m);
 522
 523         r = sd_bus_message_read(message, "s", &name);
 524         if (r < 0)
 525                 return r;
 526
 527         r = manager_load_unit(m, name, NULL, error, &u);
 528         if (r < 0)
 529                 return r;
 530
 531         return bus_unit_method_start_generic(message, u, job_type, reload_if_possible, error);
 532 }
 533
 534 static int method_start_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 535         return method_start_unit_generic(message, userdata, JOB_START, false, error);
 536 }
 537
 538 static int method_stop_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 539         return method_start_unit_generic(message, userdata, JOB_STOP, false, error);
 540 }
 541
 542 static int method_reload_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 543         return method_start_unit_generic(message, userdata, JOB_RELOAD, false, error);
 544 }
 545
 546 static int method_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 547         return method_start_unit_generic(message, userdata, JOB_RESTART, false, error);
 548 }
 549
 550 static int method_try_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 551         return method_start_unit_generic(message, userdata, JOB_TRY_RESTART, false, error);
 552 }
 553
 554 static int method_reload_or_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 555         return method_start_unit_generic(message, userdata, JOB_RESTART, true, error);
 556 }
 557
 558 static int method_reload_or_try_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 559         return method_start_unit_generic(message, userdata, JOB_TRY_RESTART, true, error);
 560 }
 561
 562 typedef enum GenericUnitOperationFlags {
 563         GENERIC_UNIT_LOAD            = 1 << 0, /* Load if the unit is not loaded yet */
 564         GENERIC_UNIT_VALIDATE_LOADED = 1 << 1, /* Verify unit is properly loaded before forwarding call */
 565 } GenericUnitOperationFlags;
 566
 567 static int method_generic_unit_operation(
 568                 sd_bus_message *message,
 569                 Manager *m,
 570                 sd_bus_error *error,
 571                 sd_bus_message_handler_t handler,
 572                 GenericUnitOperationFlags flags) {
 573
 574         const char *name;
 575         Unit *u;
 576         int r;
 577
 578         assert(message);
 579         assert(m);
 580
 581         /* Read the first argument from the command and pass the operation to the specified per-unit
 582          * method. */
 583
 584         r = sd_bus_message_read(message, "s", &name);
 585         if (r < 0)
 586                 return r;
 587
 588         if (!isempty(name) && FLAGS_SET(flags, GENERIC_UNIT_LOAD))
 589                 r = manager_load_unit(m, name, NULL, error, &u);
 590         else
 591                 r = bus_get_unit_by_name(m, message, name, &u, error);
 592         if (r < 0)
 593                 return r;
 594
 595         if (FLAGS_SET(flags, GENERIC_UNIT_VALIDATE_LOADED)) {
 596                 r = bus_unit_validate_load_state(u, error);
 597                 if (r < 0)
 598                         return r;
 599         }
 600
 601         return handler(message, u, error);
 602 }
 603
 604 static int method_enqueue_unit_job(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 605         /* We don't bother with GENERIC_UNIT_VALIDATE_LOADED here, as the job logic validates that anyway */
 606         return method_generic_unit_operation(message, userdata, error, bus_unit_method_enqueue_job, GENERIC_UNIT_LOAD);
 607 }
 608
 609 static int method_start_unit_replace(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 610         Manager *m = userdata;
 611         const char *old_name;
 612         Unit *u;
 613         int r;
 614
 615         assert(message);
 616         assert(m);
 617
 618         r = sd_bus_message_read(message, "s", &old_name);
 619         if (r < 0)
 620                 return r;
 621
 622         r = bus_get_unit_by_name(m, message, old_name, &u, error);
 623         if (r < 0)
 624                 return r;
 625         if (!u->job || u->job->type != JOB_START)
 626                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "No job queued for unit %s", old_name);
 627
 628         return method_start_unit_generic(message, m, JOB_START, false, error);
 629 }
 630
 631 static int method_kill_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 632         /* We don't bother with GENERIC_UNIT_LOAD nor GENERIC_UNIT_VALIDATE_LOADED here, as it shouldn't
 633          * matter whether a unit is loaded for killing any processes possibly in the unit's cgroup. */
 634         return method_generic_unit_operation(message, userdata, error, bus_unit_method_kill, 0);
 635 }
 636
 637 static int method_clean_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 638         /* Load the unit if necessary, in order to load it, and insist on the unit being loaded to be
 639          * cleaned */
 640         return method_generic_unit_operation(message, userdata, error, bus_unit_method_clean, GENERIC_UNIT_LOAD|GENERIC_UNIT_VALIDATE_LOADED);
 641 }
 642
 643 static int method_reset_failed_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 644         /* Don't load the unit (because unloaded units can't be in failed state), and don't insist on the
 645          * unit to be loaded properly (since a failed unit might have its unit file disappeared) */
 646         return method_generic_unit_operation(message, userdata, error, bus_unit_method_reset_failed, 0);
 647 }
 648
 649 static int method_set_unit_properties(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 650         /* Only change properties on fully loaded units, and load them in order to set properties */
 651         return method_generic_unit_operation(message, userdata, error, bus_unit_method_set_properties, GENERIC_UNIT_LOAD|GENERIC_UNIT_VALIDATE_LOADED);
 652 }
 653
 654 static int method_ref_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 655         /* Only allow reffing of fully loaded units, and make sure reffing a unit loads it. */
 656         return method_generic_unit_operation(message, userdata, error, bus_unit_method_ref, GENERIC_UNIT_LOAD|GENERIC_UNIT_VALIDATE_LOADED);
 657 }
 658
 659 static int method_unref_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 660         /* Dropping a ref OTOH should not require the unit to still be loaded. And since a reffed unit is a
 661          * loaded unit there's no need to load the unit for unreffing it. */
 662         return method_generic_unit_operation(message, userdata, error, bus_unit_method_unref, 0);
 663 }
 664
 665 static int reply_unit_info(sd_bus_message *reply, Unit *u) {
 666         _cleanup_free_ char *unit_path = NULL, *job_path = NULL;
 667         Unit *following;
 668
 669         following = unit_following(u);
 670
 671         unit_path = unit_dbus_path(u);
 672         if (!unit_path)
 673                 return -ENOMEM;
 674
 675         if (u->job) {
 676                 job_path = job_dbus_path(u->job);
 677                 if (!job_path)
 678                         return -ENOMEM;
 679         }
 680
 681         return sd_bus_message_append(
 682                         reply, "(ssssssouso)",
 683                         u->id,
 684                         unit_description(u),
 685                         unit_load_state_to_string(u->load_state),
 686                         unit_active_state_to_string(unit_active_state(u)),
 687                         unit_sub_state_to_string(u),
 688                         following ? following->id : "",
 689                         unit_path,
 690                         u->job ? u->job->id : 0,
 691                         u->job ? job_type_to_string(u->job->type) : "",
 692                         empty_to_root(job_path));
 693 }
 694
 695 static int method_list_units_by_names(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 696         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 697         Manager *m = userdata;
 698         int r;
 699         char **unit;
 700         _cleanup_strv_free_ char **units = NULL;
 701
 702         assert(message);
 703         assert(m);
 704
 705         r = sd_bus_message_read_strv(message, &units);
 706         if (r < 0)
 707                 return r;
 708
 709         r = sd_bus_message_new_method_return(message, &reply);
 710         if (r < 0)
 711                 return r;
 712
 713         r = sd_bus_message_open_container(reply, 'a', "(ssssssouso)");
 714         if (r < 0)
 715                 return r;
 716
 717         STRV_FOREACH(unit, units) {
 718                 Unit *u;
 719
 720                 if (!unit_name_is_valid(*unit, UNIT_NAME_ANY))
 721                         continue;
 722
 723                 r = bus_load_unit_by_name(m, message, *unit, &u, error);
 724                 if (r < 0)
 725                         return r;
 726
 727                 r = reply_unit_info(reply, u);
 728                 if (r < 0)
 729                         return r;
 730         }
 731
 732         r = sd_bus_message_close_container(reply);
 733         if (r < 0)
 734                 return r;
 735
 736         return sd_bus_send(NULL, reply, NULL);
 737 }
 738
 739 static int method_get_unit_processes(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 740         /* Don't load a unit (since it won't have any processes if it's not loaded), but don't insist on the
 741          * unit being loaded (because even improperly loaded units might still have processes around */
 742         return method_generic_unit_operation(message, userdata, error, bus_unit_method_get_processes, 0);
 743 }
 744
 745 static int method_attach_processes_to_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 746         /* Don't allow attaching new processes to units that aren't loaded. Don't bother with loading a unit
 747          * for this purpose though, as an unloaded unit is a stopped unit, and we don't allow attaching
 748          * processes to stopped units anyway. */
 749         return method_generic_unit_operation(message, userdata, error, bus_unit_method_attach_processes, GENERIC_UNIT_VALIDATE_LOADED);
 750 }
 751
 752 static int transient_unit_from_message(
 753                 Manager *m,
 754                 sd_bus_message *message,
 755                 const char *name,
 756                 Unit **unit,
 757                 sd_bus_error *error) {
 758
 759         UnitType t;
 760         Unit *u;
 761         int r;
 762
 763         assert(m);
 764         assert(message);
 765         assert(name);
 766
 767         t = unit_name_to_type(name);
 768         if (t < 0)
 769                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid unit name or type.");
 770
 771         if (!unit_vtable[t]->can_transient)
 772                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unit type %s does not support transient units.", unit_type_to_string(t));
 773
 774         r = manager_load_unit(m, name, NULL, error, &u);
 775         if (r < 0)
 776                 return r;
 777
 778         if (!unit_is_pristine(u))
 779                 return sd_bus_error_setf(error, BUS_ERROR_UNIT_EXISTS, "Unit %s already exists.", name);
 780
 781         /* OK, the unit failed to load and is unreferenced, now let's
 782          * fill in the transient data instead */
 783         r = unit_make_transient(u);
 784         if (r < 0)
 785                 return r;
 786
 787         /* Set our properties */
 788         r = bus_unit_set_properties(u, message, UNIT_RUNTIME, false, error);
 789         if (r < 0)
 790                 return r;
 791
 792         /* If the client asked for it, automatically add a reference to this unit. */
 793         if (u->bus_track_add) {
 794                 r = bus_unit_track_add_sender(u, message);
 795                 if (r < 0)
 796                         return log_error_errno(r, "Failed to watch sender: %m");
 797         }
 798
 799         /* Now load the missing bits of the unit we just created */
 800         unit_add_to_load_queue(u);
 801         manager_dispatch_load_queue(m);
 802
 803         *unit = u;
 804
 805         return 0;
 806 }
 807
 808 static int transient_aux_units_from_message(
 809                 Manager *m,
 810                 sd_bus_message *message,
 811                 sd_bus_error *error) {
 812
 813         int r;
 814
 815         assert(m);
 816         assert(message);
 817
 818         r = sd_bus_message_enter_container(message, 'a', "(sa(sv))");
 819         if (r < 0)
 820                 return r;
 821
 822         while ((r = sd_bus_message_enter_container(message, 'r', "sa(sv)")) > 0) {
 823                 const char *name = NULL;
 824                 Unit *u;
 825
 826                 r = sd_bus_message_read(message, "s", &name);
 827                 if (r < 0)
 828                         return r;
 829
 830                 r = transient_unit_from_message(m, message, name, &u, error);
 831                 if (r < 0)
 832                         return r;
 833
 834                 r = sd_bus_message_exit_container(message);
 835                 if (r < 0)
 836                         return r;
 837         }
 838         if (r < 0)
 839                 return r;
 840
 841         r = sd_bus_message_exit_container(message);
 842         if (r < 0)
 843                 return r;
 844
 845         return 0;
 846 }
 847
 848 static int method_start_transient_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 849         const char *name, *smode;
 850         Manager *m = userdata;
 851         JobMode mode;
 852         Unit *u;
 853         int r;
 854
 855         assert(message);
 856         assert(m);
 857
 858         r = mac_selinux_access_check(message, "start", error);
 859         if (r < 0)
 860                 return r;
 861
 862         r = sd_bus_message_read(message, "ss", &name, &smode);
 863         if (r < 0)
 864                 return r;
 865
 866         mode = job_mode_from_string(smode);
 867         if (mode < 0)
 868                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Job mode %s is invalid.", smode);
 869
 870         r = bus_verify_manage_units_async(m, message, error);
 871         if (r < 0)
 872                 return r;
 873         if (r == 0)
 874                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
 875
 876         r = transient_unit_from_message(m, message, name, &u, error);
 877         if (r < 0)
 878                 return r;
 879
 880         r = transient_aux_units_from_message(m, message, error);
 881         if (r < 0)
 882                 return r;
 883
 884         /* Finally, start it */
 885         return bus_unit_queue_job(message, u, JOB_START, mode, 0, error);
 886 }
 887
 888 static int method_get_job(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 889         _cleanup_free_ char *path = NULL;
 890         Manager *m = userdata;
 891         uint32_t id;
 892         Job *j;
 893         int r;
 894
 895         assert(message);
 896         assert(m);
 897
 898         /* Anyone can call this method */
 899
 900         r = sd_bus_message_read(message, "u", &id);
 901         if (r < 0)
 902                 return r;
 903
 904         j = manager_get_job(m, id);
 905         if (!j)
 906                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
 907
 908         r = mac_selinux_unit_access_check(j->unit, message, "status", error);
 909         if (r < 0)
 910                 return r;
 911
 912         path = job_dbus_path(j);
 913         if (!path)
 914                 return -ENOMEM;
 915
 916         return sd_bus_reply_method_return(message, "o", path);
 917 }
 918
 919 static int method_cancel_job(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 920         Manager *m = userdata;
 921         uint32_t id;
 922         Job *j;
 923         int r;
 924
 925         assert(message);
 926         assert(m);
 927
 928         r = sd_bus_message_read(message, "u", &id);
 929         if (r < 0)
 930                 return r;
 931
 932         j = manager_get_job(m, id);
 933         if (!j)
 934                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
 935
 936         return bus_job_method_cancel(message, j, error);
 937 }
 938
 939 static int method_clear_jobs(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 940         Manager *m = userdata;
 941         int r;
 942
 943         assert(message);
 944         assert(m);
 945
 946         r = mac_selinux_access_check(message, "reload", error);
 947         if (r < 0)
 948                 return r;
 949
 950         r = bus_verify_manage_units_async(m, message, error);
 951         if (r < 0)
 952                 return r;
 953         if (r == 0)
 954                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
 955
 956         manager_clear_jobs(m);
 957
 958         return sd_bus_reply_method_return(message, NULL);
 959 }
 960
 961 static int method_reset_failed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 962         Manager *m = userdata;
 963         int r;
 964
 965         assert(message);
 966         assert(m);
 967
 968         r = mac_selinux_access_check(message, "reload", error);
 969         if (r < 0)
 970                 return r;
 971
 972         r = bus_verify_manage_units_async(m, message, error);
 973         if (r < 0)
 974                 return r;
 975         if (r == 0)
 976                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
 977
 978         manager_reset_failed(m);
 979
 980         return sd_bus_reply_method_return(message, NULL);
 981 }
 982
 983 static int list_units_filtered(sd_bus_message *message, void *userdata, sd_bus_error *error, char **states, char **patterns) {
 984         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 985         Manager *m = userdata;
 986         const char *k;
 987         Iterator i;
 988         Unit *u;
 989         int r;
 990
 991         assert(message);
 992         assert(m);
 993
 994         /* Anyone can call this method */
 995
 996         r = mac_selinux_access_check(message, "status", error);
 997         if (r < 0)
 998                 return r;
 999
1000         r = sd_bus_message_new_method_return(message, &reply);
1001         if (r < 0)
1002                 return r;
1003
1004         r = sd_bus_message_open_container(reply, 'a', "(ssssssouso)");
1005         if (r < 0)
1006                 return r;
1007
1008         HASHMAP_FOREACH_KEY(u, k, m->units, i) {
1009                 if (k != u->id)
1010                         continue;
1011
1012                 if (!strv_isempty(states) &&
1013                     !strv_contains(states, unit_load_state_to_string(u->load_state)) &&
1014                     !strv_contains(states, unit_active_state_to_string(unit_active_state(u))) &&
1015                     !strv_contains(states, unit_sub_state_to_string(u)))
1016                         continue;
1017
1018                 if (!strv_isempty(patterns) &&
1019                     !strv_fnmatch_or_empty(patterns, u->id, FNM_NOESCAPE))
1020                         continue;
1021
1022                 r = reply_unit_info(reply, u);
1023                 if (r < 0)
1024                         return r;
1025         }
1026
1027         r = sd_bus_message_close_container(reply);
1028         if (r < 0)
1029                 return r;
1030
1031         return sd_bus_send(NULL, reply, NULL);
1032 }
1033
1034 static int method_list_units(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1035         return list_units_filtered(message, userdata, error, NULL, NULL);
1036 }
1037
1038 static int method_list_units_filtered(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1039         _cleanup_strv_free_ char **states = NULL;
1040         int r;
1041
1042         r = sd_bus_message_read_strv(message, &states);
1043         if (r < 0)
1044                 return r;
1045
1046         return list_units_filtered(message, userdata, error, states, NULL);
1047 }
1048
1049 static int method_list_units_by_patterns(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1050         _cleanup_strv_free_ char **states = NULL;
1051         _cleanup_strv_free_ char **patterns = NULL;
1052         int r;
1053
1054         r = sd_bus_message_read_strv(message, &states);
1055         if (r < 0)
1056                 return r;
1057
1058         r = sd_bus_message_read_strv(message, &patterns);
1059         if (r < 0)
1060                 return r;
1061
1062         return list_units_filtered(message, userdata, error, states, patterns);
1063 }
1064
1065 static int method_list_jobs(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1066         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1067         Manager *m = userdata;
1068         Iterator i;
1069         Job *j;
1070         int r;
1071
1072         assert(message);
1073         assert(m);
1074
1075         /* Anyone can call this method */
1076
1077         r = mac_selinux_access_check(message, "status", error);
1078         if (r < 0)
1079                 return r;
1080
1081         r = sd_bus_message_new_method_return(message, &reply);
1082         if (r < 0)
1083                 return r;
1084
1085         r = sd_bus_message_open_container(reply, 'a', "(usssoo)");
1086         if (r < 0)
1087                 return r;
1088
1089         HASHMAP_FOREACH(j, m->jobs, i) {
1090                 _cleanup_free_ char *unit_path = NULL, *job_path = NULL;
1091
1092                 job_path = job_dbus_path(j);
1093                 if (!job_path)
1094                         return -ENOMEM;
1095
1096                 unit_path = unit_dbus_path(j->unit);
1097                 if (!unit_path)
1098                         return -ENOMEM;
1099
1100                 r = sd_bus_message_append(
1101                                 reply, "(usssoo)",
1102                                 j->id,
1103                                 j->unit->id,
1104                                 job_type_to_string(j->type),
1105                                 job_state_to_string(j->state),
1106                                 job_path,
1107                                 unit_path);
1108                 if (r < 0)
1109                         return r;
1110         }
1111
1112         r = sd_bus_message_close_container(reply);
1113         if (r < 0)
1114                 return r;
1115
1116         return sd_bus_send(NULL, reply, NULL);
1117 }
1118
1119 static int method_subscribe(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1120         Manager *m = userdata;
1121         int r;
1122
1123         assert(message);
1124         assert(m);
1125
1126         /* Anyone can call this method */
1127
1128         r = mac_selinux_access_check(message, "status", error);
1129         if (r < 0)
1130                 return r;
1131
1132         if (sd_bus_message_get_bus(message) == m->api_bus) {
1133
1134                 /* Note that direct bus connection subscribe by
1135                  * default, we only track peers on the API bus here */
1136
1137                 if (!m->subscribed) {
1138                         r = sd_bus_track_new(sd_bus_message_get_bus(message), &m->subscribed, NULL, NULL);
1139                         if (r < 0)
1140                                 return r;
1141                 }
1142
1143                 r = sd_bus_track_add_sender(m->subscribed, message);
1144                 if (r < 0)
1145                         return r;
1146                 if (r == 0)
1147                         return sd_bus_error_setf(error, BUS_ERROR_ALREADY_SUBSCRIBED, "Client is already subscribed.");
1148         }
1149
1150         return sd_bus_reply_method_return(message, NULL);
1151 }
1152
1153 static int method_unsubscribe(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1154         Manager *m = userdata;
1155         int r;
1156
1157         assert(message);
1158         assert(m);
1159
1160         /* Anyone can call this method */
1161
1162         r = mac_selinux_access_check(message, "status", error);
1163         if (r < 0)
1164                 return r;
1165
1166         if (sd_bus_message_get_bus(message) == m->api_bus) {
1167                 r = sd_bus_track_remove_sender(m->subscribed, message);
1168                 if (r < 0)
1169                         return r;
1170                 if (r == 0)
1171                         return sd_bus_error_setf(error, BUS_ERROR_NOT_SUBSCRIBED, "Client is not subscribed.");
1172         }
1173
1174         return sd_bus_reply_method_return(message, NULL);
1175 }
1176
1177 static int dump_impl(sd_bus_message *message, void *userdata, sd_bus_error *error, int (*reply)(sd_bus_message *, char *)) {
1178         _cleanup_free_ char *dump = NULL;
1179         Manager *m = userdata;
1180         int r;
1181
1182         assert(message);
1183         assert(m);
1184
1185         /* Anyone can call this method */
1186
1187         r = mac_selinux_access_check(message, "status", error);
1188         if (r < 0)
1189                 return r;
1190
1191         r = manager_get_dump_string(m, &dump);
1192         if (r < 0)
1193                 return r;
1194
1195         return reply(message, dump);
1196 }
1197
1198 static int reply_dump(sd_bus_message *message, char *dump) {
1199         return sd_bus_reply_method_return(message, "s", dump);
1200 }
1201
1202 static int method_dump(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1203         return dump_impl(message, userdata, error, reply_dump);
1204 }
1205
1206 static int reply_dump_by_fd(sd_bus_message *message, char *dump) {
1207         _cleanup_close_ int fd = -1;
1208
1209         fd = acquire_data_fd(dump, strlen(dump), 0);
1210         if (fd < 0)
1211                 return fd;
1212
1213         return sd_bus_reply_method_return(message, "h", fd);
1214 }
1215
1216 static int method_dump_by_fd(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1217         return dump_impl(message, userdata, error, reply_dump_by_fd);
1218 }
1219
1220 static int method_refuse_snapshot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1221         return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Support for snapshots has been removed.");
1222 }
1223
1224 static int verify_run_space(const char *message, sd_bus_error *error) {
1225         struct statvfs svfs;
1226         uint64_t available;
1227
1228         if (statvfs("/run/systemd", &svfs) < 0)
1229                 return sd_bus_error_set_errnof(error, errno, "Failed to statvfs(/run/systemd): %m");
1230
1231         available = (uint64_t) svfs.f_bfree * (uint64_t) svfs.f_bsize;
1232
1233         if (available < RELOAD_DISK_SPACE_MIN) {
1234                 char fb_available[FORMAT_BYTES_MAX], fb_need[FORMAT_BYTES_MAX];
1235                 return sd_bus_error_setf(error,
1236                                          BUS_ERROR_DISK_FULL,
1237                                          "%s, not enough space available on /run/systemd. "
1238                                          "Currently, %s are free, but a safety buffer of %s is enforced.",
1239                                          message,
1240                                          format_bytes(fb_available, sizeof(fb_available), available),
1241                                          format_bytes(fb_need, sizeof(fb_need), RELOAD_DISK_SPACE_MIN));
1242         }
1243
1244         return 0;
1245 }
1246
1247 int verify_run_space_and_log(const char *message) {
1248         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1249         int r;
1250
1251         r = verify_run_space(message, &error);
1252         if (r < 0)
1253                 return log_error_errno(r, "%s", bus_error_message(&error, r));
1254
1255         return 0;
1256 }
1257
1258 static int method_reload(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1259         Manager *m = userdata;
1260         int r;
1261
1262         assert(message);
1263         assert(m);
1264
1265         r = verify_run_space("Refusing to reload", error);
1266         if (r < 0)
1267                 return r;
1268
1269         r = mac_selinux_access_check(message, "reload", error);
1270         if (r < 0)
1271                 return r;
1272
1273         r = bus_verify_reload_daemon_async(m, message, error);
1274         if (r < 0)
1275                 return r;
1276         if (r == 0)
1277                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1278
1279         /* Instead of sending the reply back right away, we just
1280          * remember that we need to and then send it after the reload
1281          * is finished. That way the caller knows when the reload
1282          * finished. */
1283
1284         assert(!m->pending_reload_message);
1285         r = sd_bus_message_new_method_return(message, &m->pending_reload_message);
1286         if (r < 0)
1287                 return r;
1288
1289         m->objective = MANAGER_RELOAD;
1290
1291         return 1;
1292 }
1293
1294 static int method_reexecute(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1295         Manager *m = userdata;
1296         int r;
1297
1298         assert(message);
1299         assert(m);
1300
1301         r = verify_run_space("Refusing to reexecute", error);
1302         if (r < 0)
1303                 return r;
1304
1305         r = mac_selinux_access_check(message, "reload", error);
1306         if (r < 0)
1307                 return r;
1308
1309         r = bus_verify_reload_daemon_async(m, message, error);
1310         if (r < 0)
1311                 return r;
1312         if (r == 0)
1313                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1314
1315         /* We don't send a reply back here, the client should
1316          * just wait for us disconnecting. */
1317
1318         m->objective = MANAGER_REEXECUTE;
1319         return 1;
1320 }
1321
1322 static int method_exit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1323         Manager *m = userdata;
1324         int r;
1325
1326         assert(message);
1327         assert(m);
1328
1329         r = mac_selinux_access_check(message, "halt", error);
1330         if (r < 0)
1331                 return r;
1332
1333         /* Exit() (in contrast to SetExitCode()) is actually allowed even if
1334          * we are running on the host. It will fall back on reboot() in
1335          * systemd-shutdown if it cannot do the exit() because it isn't a
1336          * container. */
1337
1338         m->objective = MANAGER_EXIT;
1339
1340         return sd_bus_reply_method_return(message, NULL);
1341 }
1342
1343 static int method_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1344         Manager *m = userdata;
1345         int r;
1346
1347         assert(message);
1348         assert(m);
1349
1350         r = mac_selinux_access_check(message, "reboot", error);
1351         if (r < 0)
1352                 return r;
1353
1354         if (!MANAGER_IS_SYSTEM(m))
1355                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Reboot is only supported for system managers.");
1356
1357         m->objective = MANAGER_REBOOT;
1358
1359         return sd_bus_reply_method_return(message, NULL);
1360 }
1361
1362 static int method_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1363         Manager *m = userdata;
1364         int r;
1365
1366         assert(message);
1367         assert(m);
1368
1369         r = mac_selinux_access_check(message, "halt", error);
1370         if (r < 0)
1371                 return r;
1372
1373         if (!MANAGER_IS_SYSTEM(m))
1374                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Powering off is only supported for system managers.");
1375
1376         m->objective = MANAGER_POWEROFF;
1377
1378         return sd_bus_reply_method_return(message, NULL);
1379 }
1380
1381 static int method_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1382         Manager *m = userdata;
1383         int r;
1384
1385         assert(message);
1386         assert(m);
1387
1388         r = mac_selinux_access_check(message, "halt", error);
1389         if (r < 0)
1390                 return r;
1391
1392         if (!MANAGER_IS_SYSTEM(m))
1393                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Halt is only supported for system managers.");
1394
1395         m->objective = MANAGER_HALT;
1396
1397         return sd_bus_reply_method_return(message, NULL);
1398 }
1399
1400 static int method_kexec(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1401         Manager *m = userdata;
1402         int r;
1403
1404         assert(message);
1405         assert(m);
1406
1407         r = mac_selinux_access_check(message, "reboot", error);
1408         if (r < 0)
1409                 return r;
1410
1411         if (!MANAGER_IS_SYSTEM(m))
1412                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "KExec is only supported for system managers.");
1413
1414         m->objective = MANAGER_KEXEC;
1415
1416         return sd_bus_reply_method_return(message, NULL);
1417 }
1418
1419 static int method_switch_root(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1420         _cleanup_free_ char *ri = NULL, *rt = NULL;
1421         const char *root, *init;
1422         Manager *m = userdata;
1423         struct statvfs svfs;
1424         uint64_t available;
1425         int r;
1426
1427         assert(message);
1428         assert(m);
1429
1430         if (statvfs("/run/systemd", &svfs) < 0)
1431                 return sd_bus_error_set_errnof(error, errno, "Failed to statvfs(/run/systemd): %m");
1432
1433         available = (uint64_t) svfs.f_bfree * (uint64_t) svfs.f_bsize;
1434
1435         if (available < RELOAD_DISK_SPACE_MIN) {
1436                 char fb_available[FORMAT_BYTES_MAX], fb_need[FORMAT_BYTES_MAX];
1437                 log_warning("Dangerously low amount of free space on /run/systemd, root switching operation might not complete successfully. "
1438                             "Currently, %s are free, but %s are suggested. Proceeding anyway.",
1439                             format_bytes(fb_available, sizeof(fb_available), available),
1440                             format_bytes(fb_need, sizeof(fb_need), RELOAD_DISK_SPACE_MIN));
1441         }
1442
1443         r = mac_selinux_access_check(message, "reboot", error);
1444         if (r < 0)
1445                 return r;
1446
1447         if (!MANAGER_IS_SYSTEM(m))
1448                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Root switching is only supported by system manager.");
1449
1450         r = sd_bus_message_read(message, "ss", &root, &init);
1451         if (r < 0)
1452                 return r;
1453
1454         if (isempty(root))
1455                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "New root directory may not be the empty string.");
1456         if (!path_is_absolute(root))
1457                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "New root path '%s' is not absolute.", root);
1458         if (path_equal(root, "/"))
1459                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "New root directory cannot be the old root directory.");
1460
1461         /* Safety check */
1462         if (isempty(init)) {
1463                 r = path_is_os_tree(root);
1464                 if (r < 0)
1465                         return sd_bus_error_set_errnof(error, r, "Failed to determine whether root path '%s' contains an OS tree: %m", root);
1466                 if (r == 0)
1467                         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);
1468         } else {
1469                 _cleanup_free_ char *chased = NULL;
1470
1471                 if (!path_is_absolute(init))
1472                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path to init binary '%s' not absolute.", init);
1473
1474                 r = chase_symlinks(init, root, CHASE_PREFIX_ROOT|CHASE_TRAIL_SLASH, &chased, NULL);
1475                 if (r < 0)
1476                         return sd_bus_error_set_errnof(error, r, "Could not resolve init executable %s: %m", init);
1477
1478                 if (laccess(chased, X_OK) < 0) {
1479                         if (errno == EACCES)
1480                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Init binary %s is not executable.", init);
1481
1482                         return sd_bus_error_set_errnof(error, r, "Could not check whether init binary %s is executable: %m", init);
1483                 }
1484         }
1485
1486         rt = strdup(root);
1487         if (!rt)
1488                 return -ENOMEM;
1489
1490         if (!isempty(init)) {
1491                 ri = strdup(init);
1492                 if (!ri)
1493                         return -ENOMEM;
1494         }
1495
1496         free_and_replace(m->switch_root, rt);
1497         free_and_replace(m->switch_root_init, ri);
1498
1499         m->objective = MANAGER_SWITCH_ROOT;
1500
1501         return sd_bus_reply_method_return(message, NULL);
1502 }
1503
1504 static int method_set_environment(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1505         _cleanup_strv_free_ char **plus = NULL;
1506         Manager *m = userdata;
1507         int r;
1508
1509         assert(message);
1510         assert(m);
1511
1512         r = mac_selinux_access_check(message, "reload", error);
1513         if (r < 0)
1514                 return r;
1515
1516         r = sd_bus_message_read_strv(message, &plus);
1517         if (r < 0)
1518                 return r;
1519         if (!strv_env_is_valid(plus))
1520                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment assignments");
1521
1522         r = bus_verify_set_environment_async(m, message, error);
1523         if (r < 0)
1524                 return r;
1525         if (r == 0)
1526                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1527
1528         r = manager_client_environment_modify(m, NULL, plus);
1529         if (r < 0)
1530                 return r;
1531
1532         return sd_bus_reply_method_return(message, NULL);
1533 }
1534
1535 static int method_unset_environment(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1536         _cleanup_strv_free_ char **minus = NULL;
1537         Manager *m = userdata;
1538         int r;
1539
1540         assert(message);
1541         assert(m);
1542
1543         r = mac_selinux_access_check(message, "reload", error);
1544         if (r < 0)
1545                 return r;
1546
1547         r = sd_bus_message_read_strv(message, &minus);
1548         if (r < 0)
1549                 return r;
1550
1551         if (!strv_env_name_or_assignment_is_valid(minus))
1552                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment variable names or assignments");
1553
1554         r = bus_verify_set_environment_async(m, message, error);
1555         if (r < 0)
1556                 return r;
1557         if (r == 0)
1558                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1559
1560         r = manager_client_environment_modify(m, minus, NULL);
1561         if (r < 0)
1562                 return r;
1563
1564         return sd_bus_reply_method_return(message, NULL);
1565 }
1566
1567 static int method_unset_and_set_environment(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1568         _cleanup_strv_free_ char **minus = NULL, **plus = NULL;
1569         Manager *m = userdata;
1570         int r;
1571
1572         assert(message);
1573         assert(m);
1574
1575         r = mac_selinux_access_check(message, "reload", error);
1576         if (r < 0)
1577                 return r;
1578
1579         r = sd_bus_message_read_strv(message, &minus);
1580         if (r < 0)
1581                 return r;
1582
1583         r = sd_bus_message_read_strv(message, &plus);
1584         if (r < 0)
1585                 return r;
1586
1587         if (!strv_env_name_or_assignment_is_valid(minus))
1588                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment variable names or assignments");
1589         if (!strv_env_is_valid(plus))
1590                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment assignments");
1591
1592         r = bus_verify_set_environment_async(m, message, error);
1593         if (r < 0)
1594                 return r;
1595         if (r == 0)
1596                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1597
1598         r = manager_client_environment_modify(m, minus, plus);
1599         if (r < 0)
1600                 return r;
1601
1602         return sd_bus_reply_method_return(message, NULL);
1603 }
1604
1605 static int method_set_exit_code(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1606         Manager *m = userdata;
1607         uint8_t code;
1608         int r;
1609
1610         assert(message);
1611         assert(m);
1612
1613         r = mac_selinux_access_check(message, "exit", error);
1614         if (r < 0)
1615                 return r;
1616
1617         r = sd_bus_message_read_basic(message, 'y', &code);
1618         if (r < 0)
1619                 return r;
1620
1621         if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0)
1622                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "ExitCode can only be set for user service managers or in containers.");
1623
1624         m->return_value = code;
1625
1626         return sd_bus_reply_method_return(message, NULL);
1627 }
1628
1629 static int method_lookup_dynamic_user_by_name(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1630         Manager *m = userdata;
1631         const char *name;
1632         uid_t uid;
1633         int r;
1634
1635         assert(message);
1636         assert(m);
1637
1638         r = sd_bus_message_read_basic(message, 's', &name);
1639         if (r < 0)
1640                 return r;
1641
1642         if (!MANAGER_IS_SYSTEM(m))
1643                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Dynamic users are only supported in the system instance.");
1644         if (!valid_user_group_name(name))
1645                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "User name invalid: %s", name);
1646
1647         r = dynamic_user_lookup_name(m, name, &uid);
1648         if (r == -ESRCH)
1649                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_DYNAMIC_USER, "Dynamic user %s does not exist.", name);
1650         if (r < 0)
1651                 return r;
1652
1653         return sd_bus_reply_method_return(message, "u", (uint32_t) uid);
1654 }
1655
1656 static int method_lookup_dynamic_user_by_uid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1657         _cleanup_free_ char *name = NULL;
1658         Manager *m = userdata;
1659         uid_t uid;
1660         int r;
1661
1662         assert(message);
1663         assert(m);
1664
1665         assert_cc(sizeof(uid) == sizeof(uint32_t));
1666         r = sd_bus_message_read_basic(message, 'u', &uid);
1667         if (r < 0)
1668                 return r;
1669
1670         if (!MANAGER_IS_SYSTEM(m))
1671                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Dynamic users are only supported in the system instance.");
1672         if (!uid_is_valid(uid))
1673                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "User ID invalid: " UID_FMT, uid);
1674
1675         r = dynamic_user_lookup_uid(m, uid, &name);
1676         if (r == -ESRCH)
1677                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_DYNAMIC_USER, "Dynamic user ID " UID_FMT " does not exist.", uid);
1678         if (r < 0)
1679                 return r;
1680
1681         return sd_bus_reply_method_return(message, "s", name);
1682 }
1683
1684 static int method_get_dynamic_users(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1685         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1686         Manager *m = userdata;
1687         DynamicUser *d;
1688         Iterator i;
1689         int r;
1690
1691         assert(message);
1692         assert(m);
1693
1694         assert_cc(sizeof(uid_t) == sizeof(uint32_t));
1695
1696         if (!MANAGER_IS_SYSTEM(m))
1697                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Dynamic users are only supported in the system instance.");
1698
1699         r = sd_bus_message_new_method_return(message, &reply);
1700         if (r < 0)
1701                 return r;
1702
1703         r = sd_bus_message_open_container(reply, 'a', "(us)");
1704         if (r < 0)
1705                 return r;
1706
1707         HASHMAP_FOREACH(d, m->dynamic_users, i) {
1708                 uid_t uid;
1709
1710                 r = dynamic_user_current(d, &uid);
1711                 if (r == -EAGAIN) /* not realized yet? */
1712                         continue;
1713                 if (r < 0)
1714                         return sd_bus_error_setf(error, SD_BUS_ERROR_FAILED, "Failed to lookup a dynamic user.");
1715
1716                 r = sd_bus_message_append(reply, "(us)", uid, d->name);
1717                 if (r < 0)
1718                         return r;
1719         }
1720
1721         r = sd_bus_message_close_container(reply);
1722         if (r < 0)
1723                 return r;
1724
1725         return sd_bus_send(NULL, reply, NULL);
1726 }
1727
1728 static int list_unit_files_by_patterns(sd_bus_message *message, void *userdata, sd_bus_error *error, char **states, char **patterns) {
1729         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1730         Manager *m = userdata;
1731         UnitFileList *item;
1732         Hashmap *h;
1733         Iterator i;
1734         int r;
1735
1736         assert(message);
1737         assert(m);
1738
1739         /* Anyone can call this method */
1740
1741         r = mac_selinux_access_check(message, "status", error);
1742         if (r < 0)
1743                 return r;
1744
1745         r = sd_bus_message_new_method_return(message, &reply);
1746         if (r < 0)
1747                 return r;
1748
1749         h = hashmap_new(&string_hash_ops);
1750         if (!h)
1751                 return -ENOMEM;
1752
1753         r = unit_file_get_list(m->unit_file_scope, NULL, h, states, patterns);
1754         if (r < 0)
1755                 goto fail;
1756
1757         r = sd_bus_message_open_container(reply, 'a', "(ss)");
1758         if (r < 0)
1759                 goto fail;
1760
1761         HASHMAP_FOREACH(item, h, i) {
1762
1763                 r = sd_bus_message_append(reply, "(ss)", item->path, unit_file_state_to_string(item->state));
1764                 if (r < 0)
1765                         goto fail;
1766         }
1767
1768         unit_file_list_free(h);
1769
1770         r = sd_bus_message_close_container(reply);
1771         if (r < 0)
1772                 return r;
1773
1774         return sd_bus_send(NULL, reply, NULL);
1775
1776 fail:
1777         unit_file_list_free(h);
1778         return r;
1779 }
1780
1781 static int method_list_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1782         return list_unit_files_by_patterns(message, userdata, error, NULL, NULL);
1783 }
1784
1785 static int method_list_unit_files_by_patterns(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1786         _cleanup_strv_free_ char **states = NULL;
1787         _cleanup_strv_free_ char **patterns = NULL;
1788         int r;
1789
1790         r = sd_bus_message_read_strv(message, &states);
1791         if (r < 0)
1792                 return r;
1793
1794         r = sd_bus_message_read_strv(message, &patterns);
1795         if (r < 0)
1796                 return r;
1797
1798         return list_unit_files_by_patterns(message, userdata, error, states, patterns);
1799 }
1800
1801 static int method_get_unit_file_state(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1802         Manager *m = userdata;
1803         const char *name;
1804         UnitFileState state;
1805         int r;
1806
1807         assert(message);
1808         assert(m);
1809
1810         /* Anyone can call this method */
1811
1812         r = mac_selinux_access_check(message, "status", error);
1813         if (r < 0)
1814                 return r;
1815
1816         r = sd_bus_message_read(message, "s", &name);
1817         if (r < 0)
1818                 return r;
1819
1820         r = unit_file_get_state(m->unit_file_scope, NULL, name, &state);
1821         if (r < 0)
1822                 return r;
1823
1824         return sd_bus_reply_method_return(message, "s", unit_file_state_to_string(state));
1825 }
1826
1827 static int method_get_default_target(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1828         _cleanup_free_ char *default_target = NULL;
1829         Manager *m = userdata;
1830         int r;
1831
1832         assert(message);
1833         assert(m);
1834
1835         /* Anyone can call this method */
1836
1837         r = mac_selinux_access_check(message, "status", error);
1838         if (r < 0)
1839                 return r;
1840
1841         r = unit_file_get_default(m->unit_file_scope, NULL, &default_target);
1842         if (r < 0)
1843                 return r;
1844
1845         return sd_bus_reply_method_return(message, "s", default_target);
1846 }
1847
1848 static int send_unit_files_changed(sd_bus *bus, void *userdata) {
1849         _cleanup_(sd_bus_message_unrefp) sd_bus_message *message = NULL;
1850         int r;
1851
1852         assert(bus);
1853
1854         r = sd_bus_message_new_signal(bus, &message, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "UnitFilesChanged");
1855         if (r < 0)
1856                 return r;
1857
1858         return sd_bus_send(bus, message, NULL);
1859 }
1860
1861 /* Create an error reply, using the error information from changes[]
1862  * if possible, and fall back to generating an error from error code c.
1863  * The error message only describes the first error.
1864  *
1865  * Coordinate with unit_file_dump_changes() in install.c.
1866  */
1867 static int install_error(
1868                 sd_bus_error *error,
1869                 int c,
1870                 UnitFileChange *changes,
1871                 size_t n_changes) {
1872
1873         size_t i;
1874         int r;
1875
1876         for (i = 0; i < n_changes; i++)
1877
1878                 switch(changes[i].type) {
1879
1880                 case 0 ... INT_MAX:
1881                         continue;
1882
1883                 case -EEXIST:
1884                         if (changes[i].source)
1885                                 r = sd_bus_error_setf(error, BUS_ERROR_UNIT_EXISTS,
1886                                                       "File %s already exists and is a symlink to %s.",
1887                                                       changes[i].path, changes[i].source);
1888                         else
1889                                 r = sd_bus_error_setf(error, BUS_ERROR_UNIT_EXISTS,
1890                                                       "File %s already exists.",
1891                                                       changes[i].path);
1892                         goto found;
1893
1894                 case -ERFKILL:
1895                         r = sd_bus_error_setf(error, BUS_ERROR_UNIT_MASKED,
1896                                               "Unit file %s is masked.", changes[i].path);
1897                         goto found;
1898
1899                 case -EADDRNOTAVAIL:
1900                         r = sd_bus_error_setf(error, BUS_ERROR_UNIT_GENERATED,
1901                                               "Unit %s is transient or generated.", changes[i].path);
1902                         goto found;
1903
1904                 case -ELOOP:
1905                         r = sd_bus_error_setf(error, BUS_ERROR_UNIT_LINKED,
1906                                               "Refusing to operate on alias name or linked unit file: %s",
1907                                               changes[i].path);
1908                         goto found;
1909
1910                 case -ENOENT:
1911                         r = sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT,
1912                                               "Unit file %s does not exist.", changes[i].path);
1913                         goto found;
1914
1915                 default:
1916                         r = sd_bus_error_set_errnof(error, changes[i].type, "File %s: %m", changes[i].path);
1917                         goto found;
1918                 }
1919
1920         r = c < 0 ? c : -EINVAL;
1921
1922  found:
1923         unit_file_changes_free(changes, n_changes);
1924         return r;
1925 }
1926
1927 static int reply_unit_file_changes_and_free(
1928                 Manager *m,
1929                 sd_bus_message *message,
1930                 int carries_install_info,
1931                 UnitFileChange *changes,
1932                 size_t n_changes,
1933                 sd_bus_error *error) {
1934
1935         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1936         bool bad = false, good = false;
1937         size_t i;
1938         int r;
1939
1940         if (unit_file_changes_have_modification(changes, n_changes)) {
1941                 r = bus_foreach_bus(m, NULL, send_unit_files_changed, NULL);
1942                 if (r < 0)
1943                         log_debug_errno(r, "Failed to send UnitFilesChanged signal: %m");
1944         }
1945
1946         r = sd_bus_message_new_method_return(message, &reply);
1947         if (r < 0)
1948                 goto fail;
1949
1950         if (carries_install_info >= 0) {
1951                 r = sd_bus_message_append(reply, "b", carries_install_info);
1952                 if (r < 0)
1953                         goto fail;
1954         }
1955
1956         r = sd_bus_message_open_container(reply, 'a', "(sss)");
1957         if (r < 0)
1958                 goto fail;
1959
1960         for (i = 0; i < n_changes; i++) {
1961
1962                 if (changes[i].type < 0) {
1963                         bad = true;
1964                         continue;
1965                 }
1966
1967                 r = sd_bus_message_append(
1968                                 reply, "(sss)",
1969                                 unit_file_change_type_to_string(changes[i].type),
1970                                 changes[i].path,
1971                                 changes[i].source);
1972                 if (r < 0)
1973                         goto fail;
1974
1975                 good = true;
1976         }
1977
1978         /* If there was a failed change, and no successful change, then return the first failure as proper method call
1979          * error. */
1980         if (bad && !good)
1981                 return install_error(error, 0, changes, n_changes);
1982
1983         r = sd_bus_message_close_container(reply);
1984         if (r < 0)
1985                 goto fail;
1986
1987         unit_file_changes_free(changes, n_changes);
1988         return sd_bus_send(NULL, reply, NULL);
1989
1990 fail:
1991         unit_file_changes_free(changes, n_changes);
1992         return r;
1993 }
1994
1995 static int method_enable_unit_files_generic(
1996                 sd_bus_message *message,
1997                 Manager *m,
1998                 int (*call)(UnitFileScope scope, UnitFileFlags flags, const char *root_dir, char *files[], UnitFileChange **changes, size_t *n_changes),
1999                 bool carries_install_info,
2000                 sd_bus_error *error) {
2001
2002         _cleanup_strv_free_ char **l = NULL;
2003         UnitFileChange *changes = NULL;
2004         size_t n_changes = 0;
2005         UnitFileFlags flags;
2006         int runtime, force, r;
2007
2008         assert(message);
2009         assert(m);
2010
2011         r = sd_bus_message_read_strv(message, &l);
2012         if (r < 0)
2013                 return r;
2014
2015         r = sd_bus_message_read(message, "bb", &runtime, &force);
2016         if (r < 0)
2017                 return r;
2018
2019         flags = unit_file_bools_to_flags(runtime, force);
2020
2021         r = bus_verify_manage_unit_files_async(m, message, error);
2022         if (r < 0)
2023                 return r;
2024         if (r == 0)
2025                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2026
2027         r = call(m->unit_file_scope, flags, NULL, l, &changes, &n_changes);
2028         if (r < 0)
2029                 return install_error(error, r, changes, n_changes);
2030
2031         return reply_unit_file_changes_and_free(m, message, carries_install_info ? r : -1, changes, n_changes, error);
2032 }
2033
2034 static int method_enable_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2035         return method_enable_unit_files_generic(message, userdata, unit_file_enable, true, error);
2036 }
2037
2038 static int method_reenable_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2039         return method_enable_unit_files_generic(message, userdata, unit_file_reenable, true, error);
2040 }
2041
2042 static int method_link_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2043         return method_enable_unit_files_generic(message, userdata, unit_file_link, false, error);
2044 }
2045
2046 static int unit_file_preset_without_mode(UnitFileScope scope, UnitFileFlags flags, const char *root_dir, char **files, UnitFileChange **changes, size_t *n_changes) {
2047         return unit_file_preset(scope, flags, root_dir, files, UNIT_FILE_PRESET_FULL, changes, n_changes);
2048 }
2049
2050 static int method_preset_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2051         return method_enable_unit_files_generic(message, userdata, unit_file_preset_without_mode, true, error);
2052 }
2053
2054 static int method_mask_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2055         return method_enable_unit_files_generic(message, userdata, unit_file_mask, false, error);
2056 }
2057
2058 static int method_preset_unit_files_with_mode(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2059
2060         _cleanup_strv_free_ char **l = NULL;
2061         UnitFileChange *changes = NULL;
2062         size_t n_changes = 0;
2063         Manager *m = userdata;
2064         UnitFilePresetMode mm;
2065         int runtime, force, r;
2066         UnitFileFlags flags;
2067         const char *mode;
2068
2069         assert(message);
2070         assert(m);
2071
2072         r = sd_bus_message_read_strv(message, &l);
2073         if (r < 0)
2074                 return r;
2075
2076         r = sd_bus_message_read(message, "sbb", &mode, &runtime, &force);
2077         if (r < 0)
2078                 return r;
2079
2080         flags = unit_file_bools_to_flags(runtime, force);
2081
2082         if (isempty(mode))
2083                 mm = UNIT_FILE_PRESET_FULL;
2084         else {
2085                 mm = unit_file_preset_mode_from_string(mode);
2086                 if (mm < 0)
2087                         return -EINVAL;
2088         }
2089
2090         r = bus_verify_manage_unit_files_async(m, message, error);
2091         if (r < 0)
2092                 return r;
2093         if (r == 0)
2094                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2095
2096         r = unit_file_preset(m->unit_file_scope, flags, NULL, l, mm, &changes, &n_changes);
2097         if (r < 0)
2098                 return install_error(error, r, changes, n_changes);
2099
2100         return reply_unit_file_changes_and_free(m, message, r, changes, n_changes, error);
2101 }
2102
2103 static int method_disable_unit_files_generic(
2104                 sd_bus_message *message,
2105                 Manager *m,
2106                 int (*call)(UnitFileScope scope, UnitFileFlags flags, const char *root_dir, char *files[], UnitFileChange **changes, size_t *n_changes),
2107                 sd_bus_error *error) {
2108
2109         _cleanup_strv_free_ char **l = NULL;
2110         UnitFileChange *changes = NULL;
2111         size_t n_changes = 0;
2112         int r, runtime;
2113
2114         assert(message);
2115         assert(m);
2116
2117         r = sd_bus_message_read_strv(message, &l);
2118         if (r < 0)
2119                 return r;
2120
2121         r = sd_bus_message_read(message, "b", &runtime);
2122         if (r < 0)
2123                 return r;
2124
2125         r = bus_verify_manage_unit_files_async(m, message, error);
2126         if (r < 0)
2127                 return r;
2128         if (r == 0)
2129                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2130
2131         r = call(m->unit_file_scope, runtime ? UNIT_FILE_RUNTIME : 0, NULL, l, &changes, &n_changes);
2132         if (r < 0)
2133                 return install_error(error, r, changes, n_changes);
2134
2135         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2136 }
2137
2138 static int method_disable_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2139         return method_disable_unit_files_generic(message, userdata, unit_file_disable, error);
2140 }
2141
2142 static int method_unmask_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2143         return method_disable_unit_files_generic(message, userdata, unit_file_unmask, error);
2144 }
2145
2146 static int method_revert_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2147         _cleanup_strv_free_ char **l = NULL;
2148         UnitFileChange *changes = NULL;
2149         size_t n_changes = 0;
2150         Manager *m = userdata;
2151         int r;
2152
2153         assert(message);
2154         assert(m);
2155
2156         r = sd_bus_message_read_strv(message, &l);
2157         if (r < 0)
2158                 return r;
2159
2160         r = bus_verify_manage_unit_files_async(m, message, error);
2161         if (r < 0)
2162                 return r;
2163         if (r == 0)
2164                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2165
2166         r = unit_file_revert(m->unit_file_scope, NULL, l, &changes, &n_changes);
2167         if (r < 0)
2168                 return install_error(error, r, changes, n_changes);
2169
2170         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2171 }
2172
2173 static int method_set_default_target(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2174         UnitFileChange *changes = NULL;
2175         size_t n_changes = 0;
2176         Manager *m = userdata;
2177         const char *name;
2178         int force, r;
2179
2180         assert(message);
2181         assert(m);
2182
2183         r = mac_selinux_access_check(message, "enable", error);
2184         if (r < 0)
2185                 return r;
2186
2187         r = sd_bus_message_read(message, "sb", &name, &force);
2188         if (r < 0)
2189                 return r;
2190
2191         r = bus_verify_manage_unit_files_async(m, message, error);
2192         if (r < 0)
2193                 return r;
2194         if (r == 0)
2195                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2196
2197         r = unit_file_set_default(m->unit_file_scope, force ? UNIT_FILE_FORCE : 0, NULL, name, &changes, &n_changes);
2198         if (r < 0)
2199                 return install_error(error, r, changes, n_changes);
2200
2201         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2202 }
2203
2204 static int method_preset_all_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2205         UnitFileChange *changes = NULL;
2206         size_t n_changes = 0;
2207         Manager *m = userdata;
2208         UnitFilePresetMode mm;
2209         const char *mode;
2210         UnitFileFlags flags;
2211         int force, runtime, r;
2212
2213         assert(message);
2214         assert(m);
2215
2216         r = mac_selinux_access_check(message, "enable", error);
2217         if (r < 0)
2218                 return r;
2219
2220         r = sd_bus_message_read(message, "sbb", &mode, &runtime, &force);
2221         if (r < 0)
2222                 return r;
2223
2224         flags = unit_file_bools_to_flags(runtime, force);
2225
2226         if (isempty(mode))
2227                 mm = UNIT_FILE_PRESET_FULL;
2228         else {
2229                 mm = unit_file_preset_mode_from_string(mode);
2230                 if (mm < 0)
2231                         return -EINVAL;
2232         }
2233
2234         r = bus_verify_manage_unit_files_async(m, message, error);
2235         if (r < 0)
2236                 return r;
2237         if (r == 0)
2238                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2239
2240         r = unit_file_preset_all(m->unit_file_scope, flags, NULL, mm, &changes, &n_changes);
2241         if (r < 0)
2242                 return install_error(error, r, changes, n_changes);
2243
2244         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2245 }
2246
2247 static int method_add_dependency_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2248         _cleanup_strv_free_ char **l = NULL;
2249         Manager *m = userdata;
2250         UnitFileChange *changes = NULL;
2251         size_t n_changes = 0;
2252         int runtime, force, r;
2253         char *target, *type;
2254         UnitDependency dep;
2255         UnitFileFlags flags;
2256
2257         assert(message);
2258         assert(m);
2259
2260         r = bus_verify_manage_unit_files_async(m, message, error);
2261         if (r < 0)
2262                 return r;
2263         if (r == 0)
2264                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2265
2266         r = sd_bus_message_read_strv(message, &l);
2267         if (r < 0)
2268                 return r;
2269
2270         r = sd_bus_message_read(message, "ssbb", &target, &type, &runtime, &force);
2271         if (r < 0)
2272                 return r;
2273
2274         flags = unit_file_bools_to_flags(runtime, force);
2275
2276         dep = unit_dependency_from_string(type);
2277         if (dep < 0)
2278                 return -EINVAL;
2279
2280         r = unit_file_add_dependency(m->unit_file_scope, flags, NULL, l, target, dep, &changes, &n_changes);
2281         if (r < 0)
2282                 return install_error(error, r, changes, n_changes);
2283
2284         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2285 }
2286
2287 static int method_get_unit_file_links(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2288         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
2289         UnitFileChange *changes = NULL;
2290         size_t n_changes = 0, i;
2291         UnitFileFlags flags;
2292         const char *name;
2293         char **p;
2294         int runtime, r;
2295
2296         r = sd_bus_message_read(message, "sb", &name, &runtime);
2297         if (r < 0)
2298                 return r;
2299
2300         r = sd_bus_message_new_method_return(message, &reply);
2301         if (r < 0)
2302                 return r;
2303
2304         r = sd_bus_message_open_container(reply, SD_BUS_TYPE_ARRAY, "s");
2305         if (r < 0)
2306                 return r;
2307
2308         p = STRV_MAKE(name);
2309         flags = UNIT_FILE_DRY_RUN |
2310                 (runtime ? UNIT_FILE_RUNTIME : 0);
2311
2312         r = unit_file_disable(UNIT_FILE_SYSTEM, flags, NULL, p, &changes, &n_changes);
2313         if (r < 0)
2314                 return log_error_errno(r, "Failed to get file links for %s: %m", name);
2315
2316         for (i = 0; i < n_changes; i++)
2317                 if (changes[i].type == UNIT_FILE_UNLINK) {
2318                         r = sd_bus_message_append(reply, "s", changes[i].path);
2319                         if (r < 0)
2320                                 return r;
2321                 }
2322
2323         r = sd_bus_message_close_container(reply);
2324         if (r < 0)
2325                 return r;
2326
2327         return sd_bus_send(NULL, reply, NULL);
2328 }
2329
2330 static int method_get_job_waiting(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2331         Manager *m = userdata;
2332         uint32_t id;
2333         Job *j;
2334         int r;
2335
2336         assert(message);
2337         assert(m);
2338
2339         r = sd_bus_message_read(message, "u", &id);
2340         if (r < 0)
2341                 return r;
2342
2343         j = manager_get_job(m, id);
2344         if (!j)
2345                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
2346
2347         return bus_job_method_get_waiting_jobs(message, j, error);
2348 }
2349
2350 static int method_abandon_scope(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2351         Manager *m = userdata;
2352         const char *name;
2353         Unit *u;
2354         int r;
2355
2356         assert(message);
2357         assert(m);
2358
2359         r = sd_bus_message_read(message, "s", &name);
2360         if (r < 0)
2361                 return r;
2362
2363         r = bus_get_unit_by_name(m, message, name, &u, error);
2364         if (r < 0)
2365                 return r;
2366
2367         if (u->type != UNIT_SCOPE)
2368                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unit '%s' is not a scope unit, refusing.", name);
2369
2370         return bus_scope_method_abandon(message, u, error);
2371 }
2372
2373 const sd_bus_vtable bus_manager_vtable[] = {
2374         SD_BUS_VTABLE_START(0),
2375
2376         SD_BUS_PROPERTY("Version", "s", property_get_version, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2377         SD_BUS_PROPERTY("Features", "s", property_get_features, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2378         SD_BUS_PROPERTY("Virtualization", "s", property_get_virtualization, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2379         SD_BUS_PROPERTY("Architecture", "s", property_get_architecture, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2380         SD_BUS_PROPERTY("Tainted", "s", property_get_tainted, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2381         BUS_PROPERTY_DUAL_TIMESTAMP("FirmwareTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_FIRMWARE]), SD_BUS_VTABLE_PROPERTY_CONST),
2382         BUS_PROPERTY_DUAL_TIMESTAMP("LoaderTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_LOADER]), SD_BUS_VTABLE_PROPERTY_CONST),
2383         BUS_PROPERTY_DUAL_TIMESTAMP("KernelTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_KERNEL]), SD_BUS_VTABLE_PROPERTY_CONST),
2384         BUS_PROPERTY_DUAL_TIMESTAMP("InitRDTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_INITRD]), SD_BUS_VTABLE_PROPERTY_CONST),
2385         BUS_PROPERTY_DUAL_TIMESTAMP("UserspaceTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_USERSPACE]), SD_BUS_VTABLE_PROPERTY_CONST),
2386         BUS_PROPERTY_DUAL_TIMESTAMP("FinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2387         BUS_PROPERTY_DUAL_TIMESTAMP("SecurityStartTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_SECURITY_START]), SD_BUS_VTABLE_PROPERTY_CONST),
2388         BUS_PROPERTY_DUAL_TIMESTAMP("SecurityFinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_SECURITY_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2389         BUS_PROPERTY_DUAL_TIMESTAMP("GeneratorsStartTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_GENERATORS_START]), SD_BUS_VTABLE_PROPERTY_CONST),
2390         BUS_PROPERTY_DUAL_TIMESTAMP("GeneratorsFinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_GENERATORS_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2391         BUS_PROPERTY_DUAL_TIMESTAMP("UnitsLoadStartTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_UNITS_LOAD_START]), SD_BUS_VTABLE_PROPERTY_CONST),
2392         BUS_PROPERTY_DUAL_TIMESTAMP("UnitsLoadFinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_UNITS_LOAD_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2393         BUS_PROPERTY_DUAL_TIMESTAMP("InitRDSecurityStartTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_INITRD_SECURITY_START]), SD_BUS_VTABLE_PROPERTY_CONST),
2394         BUS_PROPERTY_DUAL_TIMESTAMP("InitRDSecurityFinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_INITRD_SECURITY_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2395         BUS_PROPERTY_DUAL_TIMESTAMP("InitRDGeneratorsStartTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_INITRD_GENERATORS_START]), SD_BUS_VTABLE_PROPERTY_CONST),
2396         BUS_PROPERTY_DUAL_TIMESTAMP("InitRDGeneratorsFinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_INITRD_GENERATORS_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2397         BUS_PROPERTY_DUAL_TIMESTAMP("InitRDUnitsLoadStartTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_INITRD_UNITS_LOAD_START]), SD_BUS_VTABLE_PROPERTY_CONST),
2398         BUS_PROPERTY_DUAL_TIMESTAMP("InitRDUnitsLoadFinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_INITRD_UNITS_LOAD_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2399         SD_BUS_WRITABLE_PROPERTY("LogLevel", "s", property_get_log_level, property_set_log_level, 0, 0),
2400         SD_BUS_WRITABLE_PROPERTY("LogTarget", "s", property_get_log_target, property_set_log_target, 0, 0),
2401         SD_BUS_PROPERTY("NNames", "u", property_get_hashmap_size, offsetof(Manager, units), 0),
2402         SD_BUS_PROPERTY("NFailedUnits", "u", property_get_set_size, offsetof(Manager, failed_units), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
2403         SD_BUS_PROPERTY("NJobs", "u", property_get_hashmap_size, offsetof(Manager, jobs), 0),
2404         SD_BUS_PROPERTY("NInstalledJobs", "u", bus_property_get_unsigned, offsetof(Manager, n_installed_jobs), 0),
2405         SD_BUS_PROPERTY("NFailedJobs", "u", bus_property_get_unsigned, offsetof(Manager, n_failed_jobs), 0),
2406         SD_BUS_PROPERTY("Progress", "d", property_get_progress, 0, 0),
2407         SD_BUS_PROPERTY("Environment", "as", property_get_environment, 0, 0),
2408         SD_BUS_PROPERTY("ConfirmSpawn", "b", bus_property_get_bool, offsetof(Manager, confirm_spawn), SD_BUS_VTABLE_PROPERTY_CONST),
2409         SD_BUS_PROPERTY("ShowStatus", "b", property_get_show_status, 0, 0),
2410         SD_BUS_PROPERTY("UnitPath", "as", NULL, offsetof(Manager, lookup_paths.search_path), SD_BUS_VTABLE_PROPERTY_CONST),
2411         SD_BUS_PROPERTY("DefaultStandardOutput", "s", bus_property_get_exec_output, offsetof(Manager, default_std_output), SD_BUS_VTABLE_PROPERTY_CONST),
2412         SD_BUS_PROPERTY("DefaultStandardError", "s", bus_property_get_exec_output, offsetof(Manager, default_std_output), SD_BUS_VTABLE_PROPERTY_CONST),
2413         SD_BUS_WRITABLE_PROPERTY("RuntimeWatchdogUSec", "t", bus_property_get_usec, property_set_runtime_watchdog, offsetof(Manager, runtime_watchdog), 0),
2414         SD_BUS_WRITABLE_PROPERTY("RebootWatchdogUSec", "t", bus_property_get_usec, bus_property_set_usec, offsetof(Manager, reboot_watchdog), 0),
2415         /* The following item is an obsolete alias */
2416         SD_BUS_WRITABLE_PROPERTY("ShutdownWatchdogUSec", "t", bus_property_get_usec, bus_property_set_usec, offsetof(Manager, reboot_watchdog), SD_BUS_VTABLE_HIDDEN),
2417         SD_BUS_WRITABLE_PROPERTY("KExecWatchdogUSec", "t", bus_property_get_usec, bus_property_set_usec, offsetof(Manager, kexec_watchdog), 0),
2418         SD_BUS_WRITABLE_PROPERTY("ServiceWatchdogs", "b", bus_property_get_bool, bus_property_set_bool, offsetof(Manager, service_watchdogs), 0),
2419         SD_BUS_PROPERTY("ControlGroup", "s", NULL, offsetof(Manager, cgroup_root), 0),
2420         SD_BUS_PROPERTY("SystemState", "s", property_get_system_state, 0, 0),
2421         SD_BUS_PROPERTY("ExitCode", "y", bus_property_get_unsigned, offsetof(Manager, return_value), 0),
2422         SD_BUS_PROPERTY("DefaultTimerAccuracyUSec", "t", bus_property_get_usec, offsetof(Manager, default_timer_accuracy_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2423         SD_BUS_PROPERTY("DefaultTimeoutStartUSec", "t", bus_property_get_usec, offsetof(Manager, default_timeout_start_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2424         SD_BUS_PROPERTY("DefaultTimeoutStopUSec", "t", bus_property_get_usec, offsetof(Manager, default_timeout_stop_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2425         SD_BUS_PROPERTY("DefaultTimeoutAbortUSec", "t", property_get_default_timeout_abort_usec, 0, 0),
2426         SD_BUS_PROPERTY("DefaultRestartUSec", "t", bus_property_get_usec, offsetof(Manager, default_restart_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2427         SD_BUS_PROPERTY("DefaultStartLimitIntervalUSec", "t", bus_property_get_usec, offsetof(Manager, default_start_limit_interval), SD_BUS_VTABLE_PROPERTY_CONST),
2428         /* The following two items are obsolete alias */
2429         SD_BUS_PROPERTY("DefaultStartLimitIntervalSec", "t", bus_property_get_usec, offsetof(Manager, default_start_limit_interval), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
2430         SD_BUS_PROPERTY("DefaultStartLimitInterval", "t", bus_property_get_usec, offsetof(Manager, default_start_limit_interval), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
2431         SD_BUS_PROPERTY("DefaultStartLimitBurst", "u", bus_property_get_unsigned, offsetof(Manager, default_start_limit_burst), SD_BUS_VTABLE_PROPERTY_CONST),
2432         SD_BUS_PROPERTY("DefaultCPUAccounting", "b", bus_property_get_bool, offsetof(Manager, default_cpu_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
2433         SD_BUS_PROPERTY("DefaultBlockIOAccounting", "b", bus_property_get_bool, offsetof(Manager, default_blockio_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
2434         SD_BUS_PROPERTY("DefaultMemoryAccounting", "b", bus_property_get_bool, offsetof(Manager, default_memory_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
2435         SD_BUS_PROPERTY("DefaultTasksAccounting", "b", bus_property_get_bool, offsetof(Manager, default_tasks_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
2436         SD_BUS_PROPERTY("DefaultLimitCPU", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CPU]), SD_BUS_VTABLE_PROPERTY_CONST),
2437         SD_BUS_PROPERTY("DefaultLimitCPUSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CPU]), SD_BUS_VTABLE_PROPERTY_CONST),
2438         SD_BUS_PROPERTY("DefaultLimitFSIZE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_FSIZE]), SD_BUS_VTABLE_PROPERTY_CONST),
2439         SD_BUS_PROPERTY("DefaultLimitFSIZESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_FSIZE]), SD_BUS_VTABLE_PROPERTY_CONST),
2440         SD_BUS_PROPERTY("DefaultLimitDATA", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_DATA]), SD_BUS_VTABLE_PROPERTY_CONST),
2441         SD_BUS_PROPERTY("DefaultLimitDATASoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_DATA]), SD_BUS_VTABLE_PROPERTY_CONST),
2442         SD_BUS_PROPERTY("DefaultLimitSTACK", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_STACK]), SD_BUS_VTABLE_PROPERTY_CONST),
2443         SD_BUS_PROPERTY("DefaultLimitSTACKSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_STACK]), SD_BUS_VTABLE_PROPERTY_CONST),
2444         SD_BUS_PROPERTY("DefaultLimitCORE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CORE]), SD_BUS_VTABLE_PROPERTY_CONST),
2445         SD_BUS_PROPERTY("DefaultLimitCORESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CORE]), SD_BUS_VTABLE_PROPERTY_CONST),
2446         SD_BUS_PROPERTY("DefaultLimitRSS", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RSS]), SD_BUS_VTABLE_PROPERTY_CONST),
2447         SD_BUS_PROPERTY("DefaultLimitRSSSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RSS]), SD_BUS_VTABLE_PROPERTY_CONST),
2448         SD_BUS_PROPERTY("DefaultLimitNOFILE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NOFILE]), SD_BUS_VTABLE_PROPERTY_CONST),
2449         SD_BUS_PROPERTY("DefaultLimitNOFILESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NOFILE]), SD_BUS_VTABLE_PROPERTY_CONST),
2450         SD_BUS_PROPERTY("DefaultLimitAS", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_AS]), SD_BUS_VTABLE_PROPERTY_CONST),
2451         SD_BUS_PROPERTY("DefaultLimitASSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_AS]), SD_BUS_VTABLE_PROPERTY_CONST),
2452         SD_BUS_PROPERTY("DefaultLimitNPROC", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NPROC]), SD_BUS_VTABLE_PROPERTY_CONST),
2453         SD_BUS_PROPERTY("DefaultLimitNPROCSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NPROC]), SD_BUS_VTABLE_PROPERTY_CONST),
2454         SD_BUS_PROPERTY("DefaultLimitMEMLOCK", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MEMLOCK]), SD_BUS_VTABLE_PROPERTY_CONST),
2455         SD_BUS_PROPERTY("DefaultLimitMEMLOCKSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MEMLOCK]), SD_BUS_VTABLE_PROPERTY_CONST),
2456         SD_BUS_PROPERTY("DefaultLimitLOCKS", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_LOCKS]), SD_BUS_VTABLE_PROPERTY_CONST),
2457         SD_BUS_PROPERTY("DefaultLimitLOCKSSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_LOCKS]), SD_BUS_VTABLE_PROPERTY_CONST),
2458         SD_BUS_PROPERTY("DefaultLimitSIGPENDING", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_SIGPENDING]), SD_BUS_VTABLE_PROPERTY_CONST),
2459         SD_BUS_PROPERTY("DefaultLimitSIGPENDINGSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_SIGPENDING]), SD_BUS_VTABLE_PROPERTY_CONST),
2460         SD_BUS_PROPERTY("DefaultLimitMSGQUEUE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MSGQUEUE]), SD_BUS_VTABLE_PROPERTY_CONST),
2461         SD_BUS_PROPERTY("DefaultLimitMSGQUEUESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MSGQUEUE]), SD_BUS_VTABLE_PROPERTY_CONST),
2462         SD_BUS_PROPERTY("DefaultLimitNICE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NICE]), SD_BUS_VTABLE_PROPERTY_CONST),
2463         SD_BUS_PROPERTY("DefaultLimitNICESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NICE]), SD_BUS_VTABLE_PROPERTY_CONST),
2464         SD_BUS_PROPERTY("DefaultLimitRTPRIO", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTPRIO]), SD_BUS_VTABLE_PROPERTY_CONST),
2465         SD_BUS_PROPERTY("DefaultLimitRTPRIOSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTPRIO]), SD_BUS_VTABLE_PROPERTY_CONST),
2466         SD_BUS_PROPERTY("DefaultLimitRTTIME", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTTIME]), SD_BUS_VTABLE_PROPERTY_CONST),
2467         SD_BUS_PROPERTY("DefaultLimitRTTIMESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTTIME]), SD_BUS_VTABLE_PROPERTY_CONST),
2468         SD_BUS_PROPERTY("DefaultTasksMax", "t", NULL, offsetof(Manager, default_tasks_max), SD_BUS_VTABLE_PROPERTY_CONST),
2469         SD_BUS_PROPERTY("TimerSlackNSec", "t", property_get_timer_slack_nsec, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2470         SD_BUS_PROPERTY("DefaultOOMPolicy", "s", bus_property_get_oom_policy, offsetof(Manager, default_oom_policy), SD_BUS_VTABLE_PROPERTY_CONST),
2471
2472         SD_BUS_METHOD("GetUnit", "s", "o", method_get_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2473         SD_BUS_METHOD("GetUnitByPID", "u", "o", method_get_unit_by_pid, SD_BUS_VTABLE_UNPRIVILEGED),
2474         SD_BUS_METHOD("GetUnitByInvocationID", "ay", "o", method_get_unit_by_invocation_id, SD_BUS_VTABLE_UNPRIVILEGED),
2475         SD_BUS_METHOD("GetUnitByControlGroup", "s", "o", method_get_unit_by_control_group, SD_BUS_VTABLE_UNPRIVILEGED),
2476         SD_BUS_METHOD("LoadUnit", "s", "o", method_load_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2477         SD_BUS_METHOD("StartUnit", "ss", "o", method_start_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2478         SD_BUS_METHOD("StartUnitReplace", "sss", "o", method_start_unit_replace, SD_BUS_VTABLE_UNPRIVILEGED),
2479         SD_BUS_METHOD("StopUnit", "ss", "o", method_stop_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2480         SD_BUS_METHOD("ReloadUnit", "ss", "o", method_reload_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2481         SD_BUS_METHOD("RestartUnit", "ss", "o", method_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2482         SD_BUS_METHOD("TryRestartUnit", "ss", "o", method_try_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2483         SD_BUS_METHOD("ReloadOrRestartUnit", "ss", "o", method_reload_or_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2484         SD_BUS_METHOD("ReloadOrTryRestartUnit", "ss", "o", method_reload_or_try_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2485         SD_BUS_METHOD("EnqueueUnitJob", "sss", "uososa(uosos)", method_enqueue_unit_job, SD_BUS_VTABLE_UNPRIVILEGED),
2486         SD_BUS_METHOD("KillUnit", "ssi", NULL, method_kill_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2487         SD_BUS_METHOD("CleanUnit", "sas", NULL, method_clean_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2488         SD_BUS_METHOD("ResetFailedUnit", "s", NULL, method_reset_failed_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2489         SD_BUS_METHOD("SetUnitProperties", "sba(sv)", NULL, method_set_unit_properties, SD_BUS_VTABLE_UNPRIVILEGED),
2490         SD_BUS_METHOD("RefUnit", "s", NULL, method_ref_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2491         SD_BUS_METHOD("UnrefUnit", "s", NULL, method_unref_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2492         SD_BUS_METHOD("StartTransientUnit", "ssa(sv)a(sa(sv))", "o", method_start_transient_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2493         SD_BUS_METHOD("GetUnitProcesses", "s", "a(sus)", method_get_unit_processes, SD_BUS_VTABLE_UNPRIVILEGED),
2494         SD_BUS_METHOD("AttachProcessesToUnit", "ssau", NULL, method_attach_processes_to_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2495         SD_BUS_METHOD("AbandonScope", "s", NULL, method_abandon_scope, SD_BUS_VTABLE_UNPRIVILEGED),
2496         SD_BUS_METHOD("GetJob", "u", "o", method_get_job, SD_BUS_VTABLE_UNPRIVILEGED),
2497         SD_BUS_METHOD("GetJobAfter", "u", "a(usssoo)", method_get_job_waiting, SD_BUS_VTABLE_UNPRIVILEGED),
2498         SD_BUS_METHOD("GetJobBefore", "u", "a(usssoo)", method_get_job_waiting, SD_BUS_VTABLE_UNPRIVILEGED),
2499         SD_BUS_METHOD("CancelJob", "u", NULL, method_cancel_job, SD_BUS_VTABLE_UNPRIVILEGED),
2500         SD_BUS_METHOD("ClearJobs", NULL, NULL, method_clear_jobs, SD_BUS_VTABLE_UNPRIVILEGED),
2501         SD_BUS_METHOD("ResetFailed", NULL, NULL, method_reset_failed, SD_BUS_VTABLE_UNPRIVILEGED),
2502         SD_BUS_METHOD("ListUnits", NULL, "a(ssssssouso)", method_list_units, SD_BUS_VTABLE_UNPRIVILEGED),
2503         SD_BUS_METHOD("ListUnitsFiltered", "as", "a(ssssssouso)", method_list_units_filtered, SD_BUS_VTABLE_UNPRIVILEGED),
2504         SD_BUS_METHOD("ListUnitsByPatterns", "asas", "a(ssssssouso)", method_list_units_by_patterns, SD_BUS_VTABLE_UNPRIVILEGED),
2505         SD_BUS_METHOD("ListUnitsByNames", "as", "a(ssssssouso)", method_list_units_by_names, SD_BUS_VTABLE_UNPRIVILEGED),
2506         SD_BUS_METHOD("ListJobs", NULL, "a(usssoo)", method_list_jobs, SD_BUS_VTABLE_UNPRIVILEGED),
2507         SD_BUS_METHOD("Subscribe", NULL, NULL, method_subscribe, SD_BUS_VTABLE_UNPRIVILEGED),
2508         SD_BUS_METHOD("Unsubscribe", NULL, NULL, method_unsubscribe, SD_BUS_VTABLE_UNPRIVILEGED),
2509         SD_BUS_METHOD("Dump", NULL, "s", method_dump, SD_BUS_VTABLE_UNPRIVILEGED),
2510         SD_BUS_METHOD("DumpByFileDescriptor", NULL, "h", method_dump_by_fd, SD_BUS_VTABLE_UNPRIVILEGED),
2511         SD_BUS_METHOD("CreateSnapshot", "sb", "o", method_refuse_snapshot, SD_BUS_VTABLE_UNPRIVILEGED|SD_BUS_VTABLE_HIDDEN),
2512         SD_BUS_METHOD("RemoveSnapshot", "s", NULL, method_refuse_snapshot, SD_BUS_VTABLE_UNPRIVILEGED|SD_BUS_VTABLE_HIDDEN),
2513         SD_BUS_METHOD("Reload", NULL, NULL, method_reload, SD_BUS_VTABLE_UNPRIVILEGED),
2514         SD_BUS_METHOD("Reexecute", NULL, NULL, method_reexecute, SD_BUS_VTABLE_UNPRIVILEGED),
2515         SD_BUS_METHOD("Exit", NULL, NULL, method_exit, 0),
2516         SD_BUS_METHOD("Reboot", NULL, NULL, method_reboot, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2517         SD_BUS_METHOD("PowerOff", NULL, NULL, method_poweroff, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2518         SD_BUS_METHOD("Halt", NULL, NULL, method_halt, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2519         SD_BUS_METHOD("KExec", NULL, NULL, method_kexec, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2520         SD_BUS_METHOD("SwitchRoot", "ss", NULL, method_switch_root, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2521         SD_BUS_METHOD("SetEnvironment", "as", NULL, method_set_environment, SD_BUS_VTABLE_UNPRIVILEGED),
2522         SD_BUS_METHOD("UnsetEnvironment", "as", NULL, method_unset_environment, SD_BUS_VTABLE_UNPRIVILEGED),
2523         SD_BUS_METHOD("UnsetAndSetEnvironment", "asas", NULL, method_unset_and_set_environment, SD_BUS_VTABLE_UNPRIVILEGED),
2524         SD_BUS_METHOD("ListUnitFiles", NULL, "a(ss)", method_list_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2525         SD_BUS_METHOD("ListUnitFilesByPatterns", "asas", "a(ss)", method_list_unit_files_by_patterns, SD_BUS_VTABLE_UNPRIVILEGED),
2526         SD_BUS_METHOD("GetUnitFileState", "s", "s", method_get_unit_file_state, SD_BUS_VTABLE_UNPRIVILEGED),
2527         SD_BUS_METHOD("EnableUnitFiles", "asbb", "ba(sss)", method_enable_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2528         SD_BUS_METHOD("DisableUnitFiles", "asb", "a(sss)", method_disable_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2529         SD_BUS_METHOD("ReenableUnitFiles", "asbb", "ba(sss)", method_reenable_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2530         SD_BUS_METHOD("LinkUnitFiles", "asbb", "a(sss)", method_link_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2531         SD_BUS_METHOD("PresetUnitFiles", "asbb", "ba(sss)", method_preset_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2532         SD_BUS_METHOD("PresetUnitFilesWithMode", "assbb", "ba(sss)", method_preset_unit_files_with_mode, SD_BUS_VTABLE_UNPRIVILEGED),
2533         SD_BUS_METHOD("MaskUnitFiles", "asbb", "a(sss)", method_mask_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2534         SD_BUS_METHOD("UnmaskUnitFiles", "asb", "a(sss)", method_unmask_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2535         SD_BUS_METHOD("RevertUnitFiles", "as", "a(sss)", method_revert_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2536         SD_BUS_METHOD("SetDefaultTarget", "sb", "a(sss)", method_set_default_target, SD_BUS_VTABLE_UNPRIVILEGED),
2537         SD_BUS_METHOD("GetDefaultTarget", NULL, "s", method_get_default_target, SD_BUS_VTABLE_UNPRIVILEGED),
2538         SD_BUS_METHOD("PresetAllUnitFiles", "sbb", "a(sss)", method_preset_all_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2539         SD_BUS_METHOD("AddDependencyUnitFiles", "asssbb", "a(sss)", method_add_dependency_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2540         SD_BUS_METHOD("GetUnitFileLinks", "sb", "as", method_get_unit_file_links, SD_BUS_VTABLE_UNPRIVILEGED),
2541         SD_BUS_METHOD("SetExitCode", "y", NULL, method_set_exit_code, SD_BUS_VTABLE_UNPRIVILEGED),
2542         SD_BUS_METHOD("LookupDynamicUserByName", "s", "u", method_lookup_dynamic_user_by_name, SD_BUS_VTABLE_UNPRIVILEGED),
2543         SD_BUS_METHOD("LookupDynamicUserByUID", "u", "s", method_lookup_dynamic_user_by_uid, SD_BUS_VTABLE_UNPRIVILEGED),
2544         SD_BUS_METHOD("GetDynamicUsers", NULL, "a(us)", method_get_dynamic_users, SD_BUS_VTABLE_UNPRIVILEGED),
2545
2546         SD_BUS_SIGNAL("UnitNew", "so", 0),
2547         SD_BUS_SIGNAL("UnitRemoved", "so", 0),
2548         SD_BUS_SIGNAL("JobNew", "uos", 0),
2549         SD_BUS_SIGNAL("JobRemoved", "uoss", 0),
2550         SD_BUS_SIGNAL("StartupFinished", "tttttt", 0),
2551         SD_BUS_SIGNAL("UnitFilesChanged", NULL, 0),
2552         SD_BUS_SIGNAL("Reloading", "b", 0),
2553
2554         SD_BUS_VTABLE_END
2555 };
2556
2557 static int send_finished(sd_bus *bus, void *userdata) {
2558         _cleanup_(sd_bus_message_unrefp) sd_bus_message *message = NULL;
2559         usec_t *times = userdata;
2560         int r;
2561
2562         assert(bus);
2563         assert(times);
2564
2565         r = sd_bus_message_new_signal(bus, &message, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "StartupFinished");
2566         if (r < 0)
2567                 return r;
2568
2569         r = sd_bus_message_append(message, "tttttt", times[0], times[1], times[2], times[3], times[4], times[5]);
2570         if (r < 0)
2571                 return r;
2572
2573         return sd_bus_send(bus, message, NULL);
2574 }
2575
2576 void bus_manager_send_finished(
2577                 Manager *m,
2578                 usec_t firmware_usec,
2579                 usec_t loader_usec,
2580                 usec_t kernel_usec,
2581                 usec_t initrd_usec,
2582                 usec_t userspace_usec,
2583                 usec_t total_usec) {
2584
2585         int r;
2586
2587         assert(m);
2588
2589         r = bus_foreach_bus(
2590                         m,
2591                         NULL,
2592                         send_finished,
2593                         (usec_t[6]) {
2594                                 firmware_usec,
2595                                 loader_usec,
2596                                 kernel_usec,
2597                                 initrd_usec,
2598                                 userspace_usec,
2599                                 total_usec
2600                         });
2601         if (r < 0)
2602                 log_debug_errno(r, "Failed to send finished signal: %m");
2603 }
2604
2605 static int send_reloading(sd_bus *bus, void *userdata) {
2606         _cleanup_(sd_bus_message_unrefp) sd_bus_message *message = NULL;
2607         int r;
2608
2609         assert(bus);
2610
2611         r = sd_bus_message_new_signal(bus, &message, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "Reloading");
2612         if (r < 0)
2613                 return r;
2614
2615         r = sd_bus_message_append(message, "b", PTR_TO_INT(userdata));
2616         if (r < 0)
2617                 return r;
2618
2619         return sd_bus_send(bus, message, NULL);
2620 }
2621
2622 void bus_manager_send_reloading(Manager *m, bool active) {
2623         int r;
2624
2625         assert(m);
2626
2627         r = bus_foreach_bus(m, NULL, send_reloading, INT_TO_PTR(active));
2628         if (r < 0)
2629                 log_debug_errno(r, "Failed to send reloading signal: %m");
2630 }
2631
2632 static int send_changed_signal(sd_bus *bus, void *userdata) {
2633         assert(bus);
2634
2635         return sd_bus_emit_properties_changed_strv(bus,
2636                                                    "/org/freedesktop/systemd1",
2637                                                    "org.freedesktop.systemd1.Manager",
2638                                                    NULL);
2639 }
2640
2641 void bus_manager_send_change_signal(Manager *m) {
2642         int r;
2643
2644         assert(m);
2645
2646         r = bus_foreach_bus(m, NULL, send_changed_signal, NULL);
2647         if (r < 0)
2648                 log_debug_errno(r, "Failed to send manager change signal: %m");
2649 }