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 "bus-util.h"
  13 #include "dbus-cgroup.h"
  14 #include "dbus-execute.h"
  15 #include "dbus-job.h"
  16 #include "dbus-manager.h"
  17 #include "dbus-scope.h"
  18 #include "dbus-unit.h"
  19 #include "dbus.h"
  20 #include "env-util.h"
  21 #include "fd-util.h"
  22 #include "fileio.h"
  23 #include "format-util.h"
  24 #include "fs-util.h"
  25 #include "install.h"
  26 #include "log.h"
  27 #include "os-util.h"
  28 #include "parse-util.h"
  29 #include "path-util.h"
  30 #include "selinux-access.h"
  31 #include "stat-util.h"
  32 #include "string-util.h"
  33 #include "strv.h"
  34 #include "syslog-util.h"
  35 #include "user-util.h"
  36 #include "virt.h"
  37 #include "watchdog.h"
  38
  39 /* Require 16MiB free in /run/systemd for reloading/reexecing. After all we need to serialize our state there, and if
  40  * we can't we'll fail badly. */
  41 #define RELOAD_DISK_SPACE_MIN (UINT64_C(16) * UINT64_C(1024) * UINT64_C(1024))
  42
  43 static UnitFileFlags unit_file_bools_to_flags(bool runtime, bool force) {
  44         return (runtime ? UNIT_FILE_RUNTIME : 0) |
  45                (force   ? UNIT_FILE_FORCE   : 0);
  46 }
  47
  48 BUS_DEFINE_PROPERTY_GET_ENUM(bus_property_get_oom_policy, oom_policy, OOMPolicy);
  49
  50 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_version, "s", GIT_VERSION);
  51 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_features, "s", SYSTEMD_FEATURES);
  52 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_architecture, "s", architecture_to_string(uname_architecture()));
  53 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_log_target, "s", log_target_to_string(log_get_target()));
  54 static BUS_DEFINE_PROPERTY_GET2(property_get_system_state, "s", Manager, manager_state, manager_state_to_string);
  55 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_timer_slack_nsec, "t", (uint64_t) prctl(PR_GET_TIMERSLACK));
  56 static BUS_DEFINE_PROPERTY_GET_REF(property_get_hashmap_size, "u", Hashmap *, hashmap_size);
  57 static BUS_DEFINE_PROPERTY_GET_REF(property_get_set_size, "u", Set *, set_size);
  58 static BUS_DEFINE_PROPERTY_GET(property_get_default_timeout_abort_usec, "t", Manager, manager_default_timeout_abort_usec);
  59
  60 static int property_get_virtualization(
  61                 sd_bus *bus,
  62                 const char *path,
  63                 const char *interface,
  64                 const char *property,
  65                 sd_bus_message *reply,
  66                 void *userdata,
  67                 sd_bus_error *error) {
  68
  69         int v;
  70
  71         assert(bus);
  72         assert(reply);
  73
  74         v = detect_virtualization();
  75
  76         /* Make sure to return the empty string when we detect no virtualization, as that is the API.
  77          *
  78          * https://github.com/systemd/systemd/issues/1423
  79          */
  80
  81         return sd_bus_message_append(
  82                         reply, "s",
  83                         v == VIRTUALIZATION_NONE ? NULL : virtualization_to_string(v));
  84 }
  85
  86 static int property_get_tainted(
  87                 sd_bus *bus,
  88                 const char *path,
  89                 const char *interface,
  90                 const char *property,
  91                 sd_bus_message *reply,
  92                 void *userdata,
  93                 sd_bus_error *error) {
  94
  95         _cleanup_free_ char *s = NULL;
  96         Manager *m = userdata;
  97
  98         assert(bus);
  99         assert(reply);
 100         assert(m);
 101
 102         s = manager_taint_string(m);
 103         if (!s)
 104                 return log_oom();
 105
 106         return sd_bus_message_append(reply, "s", s);
 107 }
 108
 109 static int property_set_log_target(
 110                 sd_bus *bus,
 111                 const char *path,
 112                 const char *interface,
 113                 const char *property,
 114                 sd_bus_message *value,
 115                 void *userdata,
 116                 sd_bus_error *error) {
 117
 118         Manager *m = userdata;
 119         const char *t;
 120         int r;
 121
 122         assert(bus);
 123         assert(value);
 124
 125         r = sd_bus_message_read(value, "s", &t);
 126         if (r < 0)
 127                 return r;
 128
 129         if (isempty(t))
 130                 manager_restore_original_log_target(m);
 131         else {
 132                 LogTarget target;
 133
 134                 target = log_target_from_string(t);
 135                 if (target < 0)
 136                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid log target '%s'", t);
 137
 138                 manager_override_log_target(m, target);
 139         }
 140
 141         return 0;
 142 }
 143
 144 static int property_get_log_level(
 145                 sd_bus *bus,
 146                 const char *path,
 147                 const char *interface,
 148                 const char *property,
 149                 sd_bus_message *reply,
 150                 void *userdata,
 151                 sd_bus_error *error) {
 152
 153         _cleanup_free_ char *t = NULL;
 154         int r;
 155
 156         assert(bus);
 157         assert(reply);
 158
 159         r = log_level_to_string_alloc(log_get_max_level(), &t);
 160         if (r < 0)
 161                 return r;
 162
 163         return sd_bus_message_append(reply, "s", t);
 164 }
 165
 166 static int property_set_log_level(
 167                 sd_bus *bus,
 168                 const char *path,
 169                 const char *interface,
 170                 const char *property,
 171                 sd_bus_message *value,
 172                 void *userdata,
 173                 sd_bus_error *error) {
 174
 175         Manager *m = userdata;
 176         const char *t;
 177         int r;
 178
 179         assert(bus);
 180         assert(value);
 181
 182         r = sd_bus_message_read(value, "s", &t);
 183         if (r < 0)
 184                 return r;
 185
 186         if (isempty(t))
 187                 manager_restore_original_log_level(m);
 188         else {
 189                 int level;
 190
 191                 level = log_level_from_string(t);
 192                 if (level < 0)
 193                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid log level '%s'", t);
 194
 195                 manager_override_log_level(m, level);
 196         }
 197
 198         return 0;
 199 }
 200
 201 static int property_get_progress(
 202                 sd_bus *bus,
 203                 const char *path,
 204                 const char *interface,
 205                 const char *property,
 206                 sd_bus_message *reply,
 207                 void *userdata,
 208                 sd_bus_error *error) {
 209
 210         Manager *m = userdata;
 211         double d;
 212
 213         assert(bus);
 214         assert(reply);
 215         assert(m);
 216
 217         if (MANAGER_IS_FINISHED(m))
 218                 d = 1.0;
 219         else
 220                 d = 1.0 - ((double) hashmap_size(m->jobs) / (double) m->n_installed_jobs);
 221
 222         return sd_bus_message_append(reply, "d", d);
 223 }
 224
 225 static int property_get_environment(
 226                 sd_bus *bus,
 227                 const char *path,
 228                 const char *interface,
 229                 const char *property,
 230                 sd_bus_message *reply,
 231                 void *userdata,
 232                 sd_bus_error *error) {
 233
 234         _cleanup_strv_free_ char **l = NULL;
 235         Manager *m = userdata;
 236         int r;
 237
 238         assert(bus);
 239         assert(reply);
 240         assert(m);
 241
 242         r = manager_get_effective_environment(m, &l);
 243         if (r < 0)
 244                 return r;
 245
 246         return sd_bus_message_append_strv(reply, l);
 247 }
 248
 249 static int property_get_show_status(
 250                 sd_bus *bus,
 251                 const char *path,
 252                 const char *interface,
 253                 const char *property,
 254                 sd_bus_message *reply,
 255                 void *userdata,
 256                 sd_bus_error *error) {
 257
 258         Manager *m = userdata;
 259         int b;
 260
 261         assert(bus);
 262         assert(reply);
 263         assert(m);
 264
 265         b = IN_SET(m->show_status, SHOW_STATUS_TEMPORARY, SHOW_STATUS_YES);
 266         return sd_bus_message_append_basic(reply, 'b', &b);
 267 }
 268
 269 static int property_set_runtime_watchdog(
 270                 sd_bus *bus,
 271                 const char *path,
 272                 const char *interface,
 273                 const char *property,
 274                 sd_bus_message *value,
 275                 void *userdata,
 276                 sd_bus_error *error) {
 277
 278         usec_t *t = userdata;
 279         int r;
 280
 281         assert(bus);
 282         assert(value);
 283
 284         assert_cc(sizeof(usec_t) == sizeof(uint64_t));
 285
 286         r = sd_bus_message_read(value, "t", t);
 287         if (r < 0)
 288                 return r;
 289
 290         return watchdog_set_timeout(t);
 291 }
 292
 293 static int bus_get_unit_by_name(Manager *m, sd_bus_message *message, const char *name, Unit **ret_unit, sd_bus_error *error) {
 294         Unit *u;
 295         int r;
 296
 297         assert(m);
 298         assert(message);
 299         assert(ret_unit);
 300
 301         /* More or less a wrapper around manager_get_unit() that generates nice errors and has one trick up its sleeve:
 302          * if the name is specified empty we use the client's unit. */
 303
 304         if (isempty(name)) {
 305                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 306                 pid_t pid;
 307
 308                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 309                 if (r < 0)
 310                         return r;
 311
 312                 r = sd_bus_creds_get_pid(creds, &pid);
 313                 if (r < 0)
 314                         return r;
 315
 316                 u = manager_get_unit_by_pid(m, pid);
 317                 if (!u)
 318                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Client not member of any unit.");
 319         } else {
 320                 u = manager_get_unit(m, name);
 321                 if (!u)
 322                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s not loaded.", name);
 323         }
 324
 325         *ret_unit = u;
 326         return 0;
 327 }
 328
 329 static int bus_load_unit_by_name(Manager *m, sd_bus_message *message, const char *name, Unit **ret_unit, sd_bus_error *error) {
 330         assert(m);
 331         assert(message);
 332         assert(ret_unit);
 333
 334         /* Pretty much the same as bus_get_unit_by_name(), but we also load the unit if necessary. */
 335
 336         if (isempty(name))
 337                 return bus_get_unit_by_name(m, message, name, ret_unit, error);
 338
 339         return manager_load_unit(m, name, NULL, error, ret_unit);
 340 }
 341
 342 static int reply_unit_path(Unit *u, sd_bus_message *message, sd_bus_error *error) {
 343         _cleanup_free_ char *path = NULL;
 344         int r;
 345
 346         assert(u);
 347         assert(message);
 348
 349         r = mac_selinux_unit_access_check(u, message, "status", error);
 350         if (r < 0)
 351                 return r;
 352
 353         path = unit_dbus_path(u);
 354         if (!path)
 355                 return log_oom();
 356
 357         return sd_bus_reply_method_return(message, "o", path);
 358 }
 359
 360 static int method_get_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 361         Manager *m = userdata;
 362         const char *name;
 363         Unit *u;
 364         int r;
 365
 366         assert(message);
 367         assert(m);
 368
 369         /* Anyone can call this method */
 370
 371         r = sd_bus_message_read(message, "s", &name);
 372         if (r < 0)
 373                 return r;
 374
 375         r = bus_get_unit_by_name(m, message, name, &u, error);
 376         if (r < 0)
 377                 return r;
 378
 379         return reply_unit_path(u, message, error);
 380 }
 381
 382 static int method_get_unit_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 383         Manager *m = userdata;
 384         pid_t pid;
 385         Unit *u;
 386         int r;
 387
 388         assert(message);
 389         assert(m);
 390
 391         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 392
 393         /* Anyone can call this method */
 394
 395         r = sd_bus_message_read(message, "u", &pid);
 396         if (r < 0)
 397                 return r;
 398         if (pid < 0)
 399                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid PID " PID_FMT, pid);
 400
 401         if (pid == 0) {
 402                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 403
 404                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 405                 if (r < 0)
 406                         return r;
 407
 408                 r = sd_bus_creds_get_pid(creds, &pid);
 409                 if (r < 0)
 410                         return r;
 411         }
 412
 413         u = manager_get_unit_by_pid(m, pid);
 414         if (!u)
 415                 return sd_bus_error_setf(error, BUS_ERROR_NO_UNIT_FOR_PID, "PID "PID_FMT" does not belong to any loaded unit.", pid);
 416
 417         return reply_unit_path(u, message, error);
 418 }
 419
 420 static int method_get_unit_by_invocation_id(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 421         _cleanup_free_ char *path = NULL;
 422         Manager *m = userdata;
 423         sd_id128_t id;
 424         const void *a;
 425         Unit *u;
 426         size_t sz;
 427         int r;
 428
 429         assert(message);
 430         assert(m);
 431
 432         /* Anyone can call this method */
 433
 434         r = sd_bus_message_read_array(message, 'y', &a, &sz);
 435         if (r < 0)
 436                 return r;
 437         if (sz == 0)
 438                 id = SD_ID128_NULL;
 439         else if (sz == 16)
 440                 memcpy(&id, a, sz);
 441         else
 442                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid invocation ID");
 443
 444         if (sd_id128_is_null(id)) {
 445                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 446                 pid_t pid;
 447
 448                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 449                 if (r < 0)
 450                         return r;
 451
 452                 r = sd_bus_creds_get_pid(creds, &pid);
 453                 if (r < 0)
 454                         return r;
 455
 456                 u = manager_get_unit_by_pid(m, pid);
 457                 if (!u)
 458                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Client " PID_FMT " not member of any unit.", pid);
 459         } else {
 460                 u = hashmap_get(m->units_by_invocation_id, &id);
 461                 if (!u)
 462                         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));
 463         }
 464
 465         r = mac_selinux_unit_access_check(u, message, "status", error);
 466         if (r < 0)
 467                 return r;
 468
 469         /* So here's a special trick: the bus path we return actually references the unit by its invocation ID instead
 470          * of the unit name. This means it stays valid only as long as the invocation ID stays the same. */
 471         path = unit_dbus_path_invocation_id(u);
 472         if (!path)
 473                 return -ENOMEM;
 474
 475         return sd_bus_reply_method_return(message, "o", path);
 476 }
 477
 478 static int method_get_unit_by_control_group(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 479         Manager *m = userdata;
 480         const char *cgroup;
 481         Unit *u;
 482         int r;
 483
 484         r = sd_bus_message_read(message, "s", &cgroup);
 485         if (r < 0)
 486                 return r;
 487
 488         u = manager_get_unit_by_cgroup(m, cgroup);
 489         if (!u)
 490                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Control group '%s' is not valid or not managed by this instance", cgroup);
 491
 492         return reply_unit_path(u, message, error);
 493 }
 494
 495 static int method_load_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 496         Manager *m = userdata;
 497         const char *name;
 498         Unit *u;
 499         int r;
 500
 501         assert(message);
 502         assert(m);
 503
 504         /* Anyone can call this method */
 505
 506         r = sd_bus_message_read(message, "s", &name);
 507         if (r < 0)
 508                 return r;
 509
 510         r = bus_load_unit_by_name(m, message, name, &u, error);
 511         if (r < 0)
 512                 return r;
 513
 514         return reply_unit_path(u, message, error);
 515 }
 516
 517 static int method_start_unit_generic(sd_bus_message *message, Manager *m, JobType job_type, bool reload_if_possible, sd_bus_error *error) {
 518         const char *name;
 519         Unit *u;
 520         int r;
 521
 522         assert(message);
 523         assert(m);
 524
 525         r = sd_bus_message_read(message, "s", &name);
 526         if (r < 0)
 527                 return r;
 528
 529         r = manager_load_unit(m, name, NULL, error, &u);
 530         if (r < 0)
 531                 return r;
 532
 533         return bus_unit_method_start_generic(message, u, job_type, reload_if_possible, error);
 534 }
 535
 536 static int method_start_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 537         return method_start_unit_generic(message, userdata, JOB_START, false, error);
 538 }
 539
 540 static int method_stop_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 541         return method_start_unit_generic(message, userdata, JOB_STOP, false, error);
 542 }
 543
 544 static int method_reload_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 545         return method_start_unit_generic(message, userdata, JOB_RELOAD, false, error);
 546 }
 547
 548 static int method_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 549         return method_start_unit_generic(message, userdata, JOB_RESTART, false, error);
 550 }
 551
 552 static int method_try_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 553         return method_start_unit_generic(message, userdata, JOB_TRY_RESTART, false, error);
 554 }
 555
 556 static int method_reload_or_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 557         return method_start_unit_generic(message, userdata, JOB_RESTART, true, error);
 558 }
 559
 560 static int method_reload_or_try_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 561         return method_start_unit_generic(message, userdata, JOB_TRY_RESTART, true, error);
 562 }
 563
 564 typedef enum GenericUnitOperationFlags {
 565         GENERIC_UNIT_LOAD            = 1 << 0, /* Load if the unit is not loaded yet */
 566         GENERIC_UNIT_VALIDATE_LOADED = 1 << 1, /* Verify unit is properly loaded before forwarding call */
 567 } GenericUnitOperationFlags;
 568
 569 static int method_generic_unit_operation(
 570                 sd_bus_message *message,
 571                 Manager *m,
 572                 sd_bus_error *error,
 573                 sd_bus_message_handler_t handler,
 574                 GenericUnitOperationFlags flags) {
 575
 576         const char *name;
 577         Unit *u;
 578         int r;
 579
 580         assert(message);
 581         assert(m);
 582
 583         /* Read the first argument from the command and pass the operation to the specified per-unit
 584          * method. */
 585
 586         r = sd_bus_message_read(message, "s", &name);
 587         if (r < 0)
 588                 return r;
 589
 590         if (!isempty(name) && FLAGS_SET(flags, GENERIC_UNIT_LOAD))
 591                 r = manager_load_unit(m, name, NULL, error, &u);
 592         else
 593                 r = bus_get_unit_by_name(m, message, name, &u, error);
 594         if (r < 0)
 595                 return r;
 596
 597         if (FLAGS_SET(flags, GENERIC_UNIT_VALIDATE_LOADED)) {
 598                 r = bus_unit_validate_load_state(u, error);
 599                 if (r < 0)
 600                         return r;
 601         }
 602
 603         return handler(message, u, error);
 604 }
 605
 606 static int method_enqueue_unit_job(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 607         /* We don't bother with GENERIC_UNIT_VALIDATE_LOADED here, as the job logic validates that anyway */
 608         return method_generic_unit_operation(message, userdata, error, bus_unit_method_enqueue_job, GENERIC_UNIT_LOAD);
 609 }
 610
 611 static int method_start_unit_replace(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 612         Manager *m = userdata;
 613         const char *old_name;
 614         Unit *u;
 615         int r;
 616
 617         assert(message);
 618         assert(m);
 619
 620         r = sd_bus_message_read(message, "s", &old_name);
 621         if (r < 0)
 622                 return r;
 623
 624         r = bus_get_unit_by_name(m, message, old_name, &u, error);
 625         if (r < 0)
 626                 return r;
 627         if (!u->job || u->job->type != JOB_START)
 628                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "No job queued for unit %s", old_name);
 629
 630         return method_start_unit_generic(message, m, JOB_START, false, error);
 631 }
 632
 633 static int method_kill_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 634         /* We don't bother with GENERIC_UNIT_LOAD nor GENERIC_UNIT_VALIDATE_LOADED here, as it shouldn't
 635          * matter whether a unit is loaded for killing any processes possibly in the unit's cgroup. */
 636         return method_generic_unit_operation(message, userdata, error, bus_unit_method_kill, 0);
 637 }
 638
 639 static int method_clean_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 640         /* Load the unit if necessary, in order to load it, and insist on the unit being loaded to be
 641          * cleaned */
 642         return method_generic_unit_operation(message, userdata, error, bus_unit_method_clean, GENERIC_UNIT_LOAD|GENERIC_UNIT_VALIDATE_LOADED);
 643 }
 644
 645 static int method_reset_failed_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 646         /* Don't load the unit (because unloaded units can't be in failed state), and don't insist on the
 647          * unit to be loaded properly (since a failed unit might have its unit file disappeared) */
 648         return method_generic_unit_operation(message, userdata, error, bus_unit_method_reset_failed, 0);
 649 }
 650
 651 static int method_set_unit_properties(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 652         /* Only change properties on fully loaded units, and load them in order to set properties */
 653         return method_generic_unit_operation(message, userdata, error, bus_unit_method_set_properties, GENERIC_UNIT_LOAD|GENERIC_UNIT_VALIDATE_LOADED);
 654 }
 655
 656 static int method_ref_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 657         /* Only allow reffing of fully loaded units, and make sure reffing a unit loads it. */
 658         return method_generic_unit_operation(message, userdata, error, bus_unit_method_ref, GENERIC_UNIT_LOAD|GENERIC_UNIT_VALIDATE_LOADED);
 659 }
 660
 661 static int method_unref_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 662         /* Dropping a ref OTOH should not require the unit to still be loaded. And since a reffed unit is a
 663          * loaded unit there's no need to load the unit for unreffing it. */
 664         return method_generic_unit_operation(message, userdata, error, bus_unit_method_unref, 0);
 665 }
 666
 667 static int reply_unit_info(sd_bus_message *reply, Unit *u) {
 668         _cleanup_free_ char *unit_path = NULL, *job_path = NULL;
 669         Unit *following;
 670
 671         following = unit_following(u);
 672
 673         unit_path = unit_dbus_path(u);
 674         if (!unit_path)
 675                 return -ENOMEM;
 676
 677         if (u->job) {
 678                 job_path = job_dbus_path(u->job);
 679                 if (!job_path)
 680                         return -ENOMEM;
 681         }
 682
 683         return sd_bus_message_append(
 684                         reply, "(ssssssouso)",
 685                         u->id,
 686                         unit_description(u),
 687                         unit_load_state_to_string(u->load_state),
 688                         unit_active_state_to_string(unit_active_state(u)),
 689                         unit_sub_state_to_string(u),
 690                         following ? following->id : "",
 691                         unit_path,
 692                         u->job ? u->job->id : 0,
 693                         u->job ? job_type_to_string(u->job->type) : "",
 694                         empty_to_root(job_path));
 695 }
 696
 697 static int method_list_units_by_names(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 698         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 699         Manager *m = userdata;
 700         int r;
 701         char **unit;
 702         _cleanup_strv_free_ char **units = NULL;
 703
 704         assert(message);
 705         assert(m);
 706
 707         r = sd_bus_message_read_strv(message, &units);
 708         if (r < 0)
 709                 return r;
 710
 711         r = sd_bus_message_new_method_return(message, &reply);
 712         if (r < 0)
 713                 return r;
 714
 715         r = sd_bus_message_open_container(reply, 'a', "(ssssssouso)");
 716         if (r < 0)
 717                 return r;
 718
 719         STRV_FOREACH(unit, units) {
 720                 Unit *u;
 721
 722                 if (!unit_name_is_valid(*unit, UNIT_NAME_ANY))
 723                         continue;
 724
 725                 r = bus_load_unit_by_name(m, message, *unit, &u, error);
 726                 if (r < 0)
 727                         return r;
 728
 729                 r = reply_unit_info(reply, u);
 730                 if (r < 0)
 731                         return r;
 732         }
 733
 734         r = sd_bus_message_close_container(reply);
 735         if (r < 0)
 736                 return r;
 737
 738         return sd_bus_send(NULL, reply, NULL);
 739 }
 740
 741 static int method_get_unit_processes(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 742         /* Don't load a unit (since it won't have any processes if it's not loaded), but don't insist on the
 743          * unit being loaded (because even improperly loaded units might still have processes around */
 744         return method_generic_unit_operation(message, userdata, error, bus_unit_method_get_processes, 0);
 745 }
 746
 747 static int method_attach_processes_to_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 748         /* Don't allow attaching new processes to units that aren't loaded. Don't bother with loading a unit
 749          * for this purpose though, as an unloaded unit is a stopped unit, and we don't allow attaching
 750          * processes to stopped units anyway. */
 751         return method_generic_unit_operation(message, userdata, error, bus_unit_method_attach_processes, GENERIC_UNIT_VALIDATE_LOADED);
 752 }
 753
 754 static int transient_unit_from_message(
 755                 Manager *m,
 756                 sd_bus_message *message,
 757                 const char *name,
 758                 Unit **unit,
 759                 sd_bus_error *error) {
 760
 761         UnitType t;
 762         Unit *u;
 763         int r;
 764
 765         assert(m);
 766         assert(message);
 767         assert(name);
 768
 769         t = unit_name_to_type(name);
 770         if (t < 0)
 771                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid unit name or type.");
 772
 773         if (!unit_vtable[t]->can_transient)
 774                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unit type %s does not support transient units.", unit_type_to_string(t));
 775
 776         r = manager_load_unit(m, name, NULL, error, &u);
 777         if (r < 0)
 778                 return r;
 779
 780         if (!unit_is_pristine(u))
 781                 return sd_bus_error_setf(error, BUS_ERROR_UNIT_EXISTS, "Unit %s already exists.", name);
 782
 783         /* OK, the unit failed to load and is unreferenced, now let's
 784          * fill in the transient data instead */
 785         r = unit_make_transient(u);
 786         if (r < 0)
 787                 return r;
 788
 789         /* Set our properties */
 790         r = bus_unit_set_properties(u, message, UNIT_RUNTIME, false, error);
 791         if (r < 0)
 792                 return r;
 793
 794         /* If the client asked for it, automatically add a reference to this unit. */
 795         if (u->bus_track_add) {
 796                 r = bus_unit_track_add_sender(u, message);
 797                 if (r < 0)
 798                         return log_error_errno(r, "Failed to watch sender: %m");
 799         }
 800
 801         /* Now load the missing bits of the unit we just created */
 802         unit_add_to_load_queue(u);
 803         manager_dispatch_load_queue(m);
 804
 805         *unit = u;
 806
 807         return 0;
 808 }
 809
 810 static int transient_aux_units_from_message(
 811                 Manager *m,
 812                 sd_bus_message *message,
 813                 sd_bus_error *error) {
 814
 815         int r;
 816
 817         assert(m);
 818         assert(message);
 819
 820         r = sd_bus_message_enter_container(message, 'a', "(sa(sv))");
 821         if (r < 0)
 822                 return r;
 823
 824         while ((r = sd_bus_message_enter_container(message, 'r', "sa(sv)")) > 0) {
 825                 const char *name = NULL;
 826                 Unit *u;
 827
 828                 r = sd_bus_message_read(message, "s", &name);
 829                 if (r < 0)
 830                         return r;
 831
 832                 r = transient_unit_from_message(m, message, name, &u, error);
 833                 if (r < 0)
 834                         return r;
 835
 836                 r = sd_bus_message_exit_container(message);
 837                 if (r < 0)
 838                         return r;
 839         }
 840         if (r < 0)
 841                 return r;
 842
 843         r = sd_bus_message_exit_container(message);
 844         if (r < 0)
 845                 return r;
 846
 847         return 0;
 848 }
 849
 850 static int method_start_transient_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 851         const char *name, *smode;
 852         Manager *m = userdata;
 853         JobMode mode;
 854         Unit *u;
 855         int r;
 856
 857         assert(message);
 858         assert(m);
 859
 860         r = mac_selinux_access_check(message, "start", error);
 861         if (r < 0)
 862                 return r;
 863
 864         r = sd_bus_message_read(message, "ss", &name, &smode);
 865         if (r < 0)
 866                 return r;
 867
 868         mode = job_mode_from_string(smode);
 869         if (mode < 0)
 870                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Job mode %s is invalid.", smode);
 871
 872         r = bus_verify_manage_units_async(m, message, error);
 873         if (r < 0)
 874                 return r;
 875         if (r == 0)
 876                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
 877
 878         r = transient_unit_from_message(m, message, name, &u, error);
 879         if (r < 0)
 880                 return r;
 881
 882         r = transient_aux_units_from_message(m, message, error);
 883         if (r < 0)
 884                 return r;
 885
 886         /* Finally, start it */
 887         return bus_unit_queue_job(message, u, JOB_START, mode, 0, error);
 888 }
 889
 890 static int method_get_job(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 891         _cleanup_free_ char *path = NULL;
 892         Manager *m = userdata;
 893         uint32_t id;
 894         Job *j;
 895         int r;
 896
 897         assert(message);
 898         assert(m);
 899
 900         /* Anyone can call this method */
 901
 902         r = sd_bus_message_read(message, "u", &id);
 903         if (r < 0)
 904                 return r;
 905
 906         j = manager_get_job(m, id);
 907         if (!j)
 908                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
 909
 910         r = mac_selinux_unit_access_check(j->unit, message, "status", error);
 911         if (r < 0)
 912                 return r;
 913
 914         path = job_dbus_path(j);
 915         if (!path)
 916                 return -ENOMEM;
 917
 918         return sd_bus_reply_method_return(message, "o", path);
 919 }
 920
 921 static int method_cancel_job(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 922         Manager *m = userdata;
 923         uint32_t id;
 924         Job *j;
 925         int r;
 926
 927         assert(message);
 928         assert(m);
 929
 930         r = sd_bus_message_read(message, "u", &id);
 931         if (r < 0)
 932                 return r;
 933
 934         j = manager_get_job(m, id);
 935         if (!j)
 936                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
 937
 938         return bus_job_method_cancel(message, j, error);
 939 }
 940
 941 static int method_clear_jobs(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 942         Manager *m = userdata;
 943         int r;
 944
 945         assert(message);
 946         assert(m);
 947
 948         r = mac_selinux_access_check(message, "reload", error);
 949         if (r < 0)
 950                 return r;
 951
 952         r = bus_verify_manage_units_async(m, message, error);
 953         if (r < 0)
 954                 return r;
 955         if (r == 0)
 956                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
 957
 958         manager_clear_jobs(m);
 959
 960         return sd_bus_reply_method_return(message, NULL);
 961 }
 962
 963 static int method_reset_failed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 964         Manager *m = userdata;
 965         int r;
 966
 967         assert(message);
 968         assert(m);
 969
 970         r = mac_selinux_access_check(message, "reload", error);
 971         if (r < 0)
 972                 return r;
 973
 974         r = bus_verify_manage_units_async(m, message, error);
 975         if (r < 0)
 976                 return r;
 977         if (r == 0)
 978                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
 979
 980         manager_reset_failed(m);
 981
 982         return sd_bus_reply_method_return(message, NULL);
 983 }
 984
 985 static int list_units_filtered(sd_bus_message *message, void *userdata, sd_bus_error *error, char **states, char **patterns) {
 986         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 987         Manager *m = userdata;
 988         const char *k;
 989         Iterator i;
 990         Unit *u;
 991         int r;
 992
 993         assert(message);
 994         assert(m);
 995
 996         /* Anyone can call this method */
 997
 998         r = mac_selinux_access_check(message, "status", error);
 999         if (r < 0)
1000                 return r;
1001
1002         r = sd_bus_message_new_method_return(message, &reply);
1003         if (r < 0)
1004                 return r;
1005
1006         r = sd_bus_message_open_container(reply, 'a', "(ssssssouso)");
1007         if (r < 0)
1008                 return r;
1009
1010         HASHMAP_FOREACH_KEY(u, k, m->units, i) {
1011                 if (k != u->id)
1012                         continue;
1013
1014                 if (!strv_isempty(states) &&
1015                     !strv_contains(states, unit_load_state_to_string(u->load_state)) &&
1016                     !strv_contains(states, unit_active_state_to_string(unit_active_state(u))) &&
1017                     !strv_contains(states, unit_sub_state_to_string(u)))
1018                         continue;
1019
1020                 if (!strv_isempty(patterns) &&
1021                     !strv_fnmatch_or_empty(patterns, u->id, FNM_NOESCAPE))
1022                         continue;
1023
1024                 r = reply_unit_info(reply, u);
1025                 if (r < 0)
1026                         return r;
1027         }
1028
1029         r = sd_bus_message_close_container(reply);
1030         if (r < 0)
1031                 return r;
1032
1033         return sd_bus_send(NULL, reply, NULL);
1034 }
1035
1036 static int method_list_units(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1037         return list_units_filtered(message, userdata, error, NULL, NULL);
1038 }
1039
1040 static int method_list_units_filtered(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1041         _cleanup_strv_free_ char **states = NULL;
1042         int r;
1043
1044         r = sd_bus_message_read_strv(message, &states);
1045         if (r < 0)
1046                 return r;
1047
1048         return list_units_filtered(message, userdata, error, states, NULL);
1049 }
1050
1051 static int method_list_units_by_patterns(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1052         _cleanup_strv_free_ char **states = NULL;
1053         _cleanup_strv_free_ char **patterns = NULL;
1054         int r;
1055
1056         r = sd_bus_message_read_strv(message, &states);
1057         if (r < 0)
1058                 return r;
1059
1060         r = sd_bus_message_read_strv(message, &patterns);
1061         if (r < 0)
1062                 return r;
1063
1064         return list_units_filtered(message, userdata, error, states, patterns);
1065 }
1066
1067 static int method_list_jobs(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1068         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1069         Manager *m = userdata;
1070         Iterator i;
1071         Job *j;
1072         int r;
1073
1074         assert(message);
1075         assert(m);
1076
1077         /* Anyone can call this method */
1078
1079         r = mac_selinux_access_check(message, "status", error);
1080         if (r < 0)
1081                 return r;
1082
1083         r = sd_bus_message_new_method_return(message, &reply);
1084         if (r < 0)
1085                 return r;
1086
1087         r = sd_bus_message_open_container(reply, 'a', "(usssoo)");
1088         if (r < 0)
1089                 return r;
1090
1091         HASHMAP_FOREACH(j, m->jobs, i) {
1092                 _cleanup_free_ char *unit_path = NULL, *job_path = NULL;
1093
1094                 job_path = job_dbus_path(j);
1095                 if (!job_path)
1096                         return -ENOMEM;
1097
1098                 unit_path = unit_dbus_path(j->unit);
1099                 if (!unit_path)
1100                         return -ENOMEM;
1101
1102                 r = sd_bus_message_append(
1103                                 reply, "(usssoo)",
1104                                 j->id,
1105                                 j->unit->id,
1106                                 job_type_to_string(j->type),
1107                                 job_state_to_string(j->state),
1108                                 job_path,
1109                                 unit_path);
1110                 if (r < 0)
1111                         return r;
1112         }
1113
1114         r = sd_bus_message_close_container(reply);
1115         if (r < 0)
1116                 return r;
1117
1118         return sd_bus_send(NULL, reply, NULL);
1119 }
1120
1121 static int method_subscribe(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1122         Manager *m = userdata;
1123         int r;
1124
1125         assert(message);
1126         assert(m);
1127
1128         /* Anyone can call this method */
1129
1130         r = mac_selinux_access_check(message, "status", error);
1131         if (r < 0)
1132                 return r;
1133
1134         if (sd_bus_message_get_bus(message) == m->api_bus) {
1135
1136                 /* Note that direct bus connection subscribe by
1137                  * default, we only track peers on the API bus here */
1138
1139                 if (!m->subscribed) {
1140                         r = sd_bus_track_new(sd_bus_message_get_bus(message), &m->subscribed, NULL, NULL);
1141                         if (r < 0)
1142                                 return r;
1143                 }
1144
1145                 r = sd_bus_track_add_sender(m->subscribed, message);
1146                 if (r < 0)
1147                         return r;
1148                 if (r == 0)
1149                         return sd_bus_error_setf(error, BUS_ERROR_ALREADY_SUBSCRIBED, "Client is already subscribed.");
1150         }
1151
1152         return sd_bus_reply_method_return(message, NULL);
1153 }
1154
1155 static int method_unsubscribe(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1156         Manager *m = userdata;
1157         int r;
1158
1159         assert(message);
1160         assert(m);
1161
1162         /* Anyone can call this method */
1163
1164         r = mac_selinux_access_check(message, "status", error);
1165         if (r < 0)
1166                 return r;
1167
1168         if (sd_bus_message_get_bus(message) == m->api_bus) {
1169                 r = sd_bus_track_remove_sender(m->subscribed, message);
1170                 if (r < 0)
1171                         return r;
1172                 if (r == 0)
1173                         return sd_bus_error_setf(error, BUS_ERROR_NOT_SUBSCRIBED, "Client is not subscribed.");
1174         }
1175
1176         return sd_bus_reply_method_return(message, NULL);
1177 }
1178
1179 static int dump_impl(sd_bus_message *message, void *userdata, sd_bus_error *error, int (*reply)(sd_bus_message *, char *)) {
1180         _cleanup_free_ char *dump = NULL;
1181         Manager *m = userdata;
1182         int r;
1183
1184         assert(message);
1185         assert(m);
1186
1187         /* Anyone can call this method */
1188
1189         r = mac_selinux_access_check(message, "status", error);
1190         if (r < 0)
1191                 return r;
1192
1193         r = manager_get_dump_string(m, &dump);
1194         if (r < 0)
1195                 return r;
1196
1197         return reply(message, dump);
1198 }
1199
1200 static int reply_dump(sd_bus_message *message, char *dump) {
1201         return sd_bus_reply_method_return(message, "s", dump);
1202 }
1203
1204 static int method_dump(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1205         return dump_impl(message, userdata, error, reply_dump);
1206 }
1207
1208 static int reply_dump_by_fd(sd_bus_message *message, char *dump) {
1209         _cleanup_close_ int fd = -1;
1210
1211         fd = acquire_data_fd(dump, strlen(dump), 0);
1212         if (fd < 0)
1213                 return fd;
1214
1215         return sd_bus_reply_method_return(message, "h", fd);
1216 }
1217
1218 static int method_dump_by_fd(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1219         return dump_impl(message, userdata, error, reply_dump_by_fd);
1220 }
1221
1222 static int method_refuse_snapshot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1223         return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Support for snapshots has been removed.");
1224 }
1225
1226 static int verify_run_space(const char *message, sd_bus_error *error) {
1227         struct statvfs svfs;
1228         uint64_t available;
1229
1230         if (statvfs("/run/systemd", &svfs) < 0)
1231                 return sd_bus_error_set_errnof(error, errno, "Failed to statvfs(/run/systemd): %m");
1232
1233         available = (uint64_t) svfs.f_bfree * (uint64_t) svfs.f_bsize;
1234
1235         if (available < RELOAD_DISK_SPACE_MIN) {
1236                 char fb_available[FORMAT_BYTES_MAX], fb_need[FORMAT_BYTES_MAX];
1237                 return sd_bus_error_setf(error,
1238                                          BUS_ERROR_DISK_FULL,
1239                                          "%s, not enough space available on /run/systemd. "
1240                                          "Currently, %s are free, but a safety buffer of %s is enforced.",
1241                                          message,
1242                                          format_bytes(fb_available, sizeof(fb_available), available),
1243                                          format_bytes(fb_need, sizeof(fb_need), RELOAD_DISK_SPACE_MIN));
1244         }
1245
1246         return 0;
1247 }
1248
1249 int verify_run_space_and_log(const char *message) {
1250         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1251         int r;
1252
1253         r = verify_run_space(message, &error);
1254         if (r < 0)
1255                 return log_error_errno(r, "%s", bus_error_message(&error, r));
1256
1257         return 0;
1258 }
1259
1260 static int method_reload(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1261         Manager *m = userdata;
1262         int r;
1263
1264         assert(message);
1265         assert(m);
1266
1267         r = verify_run_space("Refusing to reload", error);
1268         if (r < 0)
1269                 return r;
1270
1271         r = mac_selinux_access_check(message, "reload", error);
1272         if (r < 0)
1273                 return r;
1274
1275         r = bus_verify_reload_daemon_async(m, message, error);
1276         if (r < 0)
1277                 return r;
1278         if (r == 0)
1279                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1280
1281         /* Instead of sending the reply back right away, we just
1282          * remember that we need to and then send it after the reload
1283          * is finished. That way the caller knows when the reload
1284          * finished. */
1285
1286         assert(!m->pending_reload_message);
1287         r = sd_bus_message_new_method_return(message, &m->pending_reload_message);
1288         if (r < 0)
1289                 return r;
1290
1291         m->objective = MANAGER_RELOAD;
1292
1293         return 1;
1294 }
1295
1296 static int method_reexecute(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1297         Manager *m = userdata;
1298         int r;
1299
1300         assert(message);
1301         assert(m);
1302
1303         r = verify_run_space("Refusing to reexecute", error);
1304         if (r < 0)
1305                 return r;
1306
1307         r = mac_selinux_access_check(message, "reload", error);
1308         if (r < 0)
1309                 return r;
1310
1311         r = bus_verify_reload_daemon_async(m, message, error);
1312         if (r < 0)
1313                 return r;
1314         if (r == 0)
1315                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1316
1317         /* We don't send a reply back here, the client should
1318          * just wait for us disconnecting. */
1319
1320         m->objective = MANAGER_REEXECUTE;
1321         return 1;
1322 }
1323
1324 static int method_exit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1325         Manager *m = userdata;
1326         int r;
1327
1328         assert(message);
1329         assert(m);
1330
1331         r = mac_selinux_access_check(message, "halt", error);
1332         if (r < 0)
1333                 return r;
1334
1335         /* Exit() (in contrast to SetExitCode()) is actually allowed even if
1336          * we are running on the host. It will fall back on reboot() in
1337          * systemd-shutdown if it cannot do the exit() because it isn't a
1338          * container. */
1339
1340         m->objective = MANAGER_EXIT;
1341
1342         return sd_bus_reply_method_return(message, NULL);
1343 }
1344
1345 static int method_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1346         Manager *m = userdata;
1347         int r;
1348
1349         assert(message);
1350         assert(m);
1351
1352         r = mac_selinux_access_check(message, "reboot", error);
1353         if (r < 0)
1354                 return r;
1355
1356         if (!MANAGER_IS_SYSTEM(m))
1357                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Reboot is only supported for system managers.");
1358
1359         m->objective = MANAGER_REBOOT;
1360
1361         return sd_bus_reply_method_return(message, NULL);
1362 }
1363
1364 static int method_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1365         Manager *m = userdata;
1366         int r;
1367
1368         assert(message);
1369         assert(m);
1370
1371         r = mac_selinux_access_check(message, "halt", error);
1372         if (r < 0)
1373                 return r;
1374
1375         if (!MANAGER_IS_SYSTEM(m))
1376                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Powering off is only supported for system managers.");
1377
1378         m->objective = MANAGER_POWEROFF;
1379
1380         return sd_bus_reply_method_return(message, NULL);
1381 }
1382
1383 static int method_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1384         Manager *m = userdata;
1385         int r;
1386
1387         assert(message);
1388         assert(m);
1389
1390         r = mac_selinux_access_check(message, "halt", error);
1391         if (r < 0)
1392                 return r;
1393
1394         if (!MANAGER_IS_SYSTEM(m))
1395                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Halt is only supported for system managers.");
1396
1397         m->objective = MANAGER_HALT;
1398
1399         return sd_bus_reply_method_return(message, NULL);
1400 }
1401
1402 static int method_kexec(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1403         Manager *m = userdata;
1404         int r;
1405
1406         assert(message);
1407         assert(m);
1408
1409         r = mac_selinux_access_check(message, "reboot", error);
1410         if (r < 0)
1411                 return r;
1412
1413         if (!MANAGER_IS_SYSTEM(m))
1414                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "KExec is only supported for system managers.");
1415
1416         m->objective = MANAGER_KEXEC;
1417
1418         return sd_bus_reply_method_return(message, NULL);
1419 }
1420
1421 static int method_switch_root(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1422         _cleanup_free_ char *ri = NULL, *rt = NULL;
1423         const char *root, *init;
1424         Manager *m = userdata;
1425         struct statvfs svfs;
1426         uint64_t available;
1427         int r;
1428
1429         assert(message);
1430         assert(m);
1431
1432         if (statvfs("/run/systemd", &svfs) < 0)
1433                 return sd_bus_error_set_errnof(error, errno, "Failed to statvfs(/run/systemd): %m");
1434
1435         available = (uint64_t) svfs.f_bfree * (uint64_t) svfs.f_bsize;
1436
1437         if (available < RELOAD_DISK_SPACE_MIN) {
1438                 char fb_available[FORMAT_BYTES_MAX], fb_need[FORMAT_BYTES_MAX];
1439                 log_warning("Dangerously low amount of free space on /run/systemd, root switching operation might not complete successfully. "
1440                             "Currently, %s are free, but %s are suggested. Proceeding anyway.",
1441                             format_bytes(fb_available, sizeof(fb_available), available),
1442                             format_bytes(fb_need, sizeof(fb_need), RELOAD_DISK_SPACE_MIN));
1443         }
1444
1445         r = mac_selinux_access_check(message, "reboot", error);
1446         if (r < 0)
1447                 return r;
1448
1449         if (!MANAGER_IS_SYSTEM(m))
1450                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Root switching is only supported by system manager.");
1451
1452         r = sd_bus_message_read(message, "ss", &root, &init);
1453         if (r < 0)
1454                 return r;
1455
1456         if (isempty(root))
1457                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "New root directory may not be the empty string.");
1458         if (!path_is_absolute(root))
1459                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "New root path '%s' is not absolute.", root);
1460         if (path_equal(root, "/"))
1461                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "New root directory cannot be the old root directory.");
1462
1463         /* Safety check */
1464         if (isempty(init)) {
1465                 r = path_is_os_tree(root);
1466                 if (r < 0)
1467                         return sd_bus_error_set_errnof(error, r, "Failed to determine whether root path '%s' contains an OS tree: %m", root);
1468                 if (r == 0)
1469                         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);
1470         } else {
1471                 _cleanup_free_ char *chased = NULL;
1472
1473                 if (!path_is_absolute(init))
1474                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path to init binary '%s' not absolute.", init);
1475
1476                 r = chase_symlinks(init, root, CHASE_PREFIX_ROOT|CHASE_TRAIL_SLASH, &chased, NULL);
1477                 if (r < 0)
1478                         return sd_bus_error_set_errnof(error, r, "Could not resolve init executable %s: %m", init);
1479
1480                 if (laccess(chased, X_OK) < 0) {
1481                         if (errno == EACCES)
1482                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Init binary %s is not executable.", init);
1483
1484                         return sd_bus_error_set_errnof(error, r, "Could not check whether init binary %s is executable: %m", init);
1485                 }
1486         }
1487
1488         rt = strdup(root);
1489         if (!rt)
1490                 return -ENOMEM;
1491
1492         if (!isempty(init)) {
1493                 ri = strdup(init);
1494                 if (!ri)
1495                         return -ENOMEM;
1496         }
1497
1498         free_and_replace(m->switch_root, rt);
1499         free_and_replace(m->switch_root_init, ri);
1500
1501         m->objective = MANAGER_SWITCH_ROOT;
1502
1503         return sd_bus_reply_method_return(message, NULL);
1504 }
1505
1506 static int method_set_environment(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1507         _cleanup_strv_free_ char **plus = NULL;
1508         Manager *m = userdata;
1509         int r;
1510
1511         assert(message);
1512         assert(m);
1513
1514         r = mac_selinux_access_check(message, "reload", error);
1515         if (r < 0)
1516                 return r;
1517
1518         r = sd_bus_message_read_strv(message, &plus);
1519         if (r < 0)
1520                 return r;
1521         if (!strv_env_is_valid(plus))
1522                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment assignments");
1523
1524         r = bus_verify_set_environment_async(m, message, error);
1525         if (r < 0)
1526                 return r;
1527         if (r == 0)
1528                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1529
1530         r = manager_client_environment_modify(m, NULL, plus);
1531         if (r < 0)
1532                 return r;
1533
1534         return sd_bus_reply_method_return(message, NULL);
1535 }
1536
1537 static int method_unset_environment(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1538         _cleanup_strv_free_ char **minus = NULL;
1539         Manager *m = userdata;
1540         int r;
1541
1542         assert(message);
1543         assert(m);
1544
1545         r = mac_selinux_access_check(message, "reload", error);
1546         if (r < 0)
1547                 return r;
1548
1549         r = sd_bus_message_read_strv(message, &minus);
1550         if (r < 0)
1551                 return r;
1552
1553         if (!strv_env_name_or_assignment_is_valid(minus))
1554                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment variable names or assignments");
1555
1556         r = bus_verify_set_environment_async(m, message, error);
1557         if (r < 0)
1558                 return r;
1559         if (r == 0)
1560                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1561
1562         r = manager_client_environment_modify(m, minus, NULL);
1563         if (r < 0)
1564                 return r;
1565
1566         return sd_bus_reply_method_return(message, NULL);
1567 }
1568
1569 static int method_unset_and_set_environment(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1570         _cleanup_strv_free_ char **minus = NULL, **plus = NULL;
1571         Manager *m = userdata;
1572         int r;
1573
1574         assert(message);
1575         assert(m);
1576
1577         r = mac_selinux_access_check(message, "reload", error);
1578         if (r < 0)
1579                 return r;
1580
1581         r = sd_bus_message_read_strv(message, &minus);
1582         if (r < 0)
1583                 return r;
1584
1585         r = sd_bus_message_read_strv(message, &plus);
1586         if (r < 0)
1587                 return r;
1588
1589         if (!strv_env_name_or_assignment_is_valid(minus))
1590                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment variable names or assignments");
1591         if (!strv_env_is_valid(plus))
1592                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment assignments");
1593
1594         r = bus_verify_set_environment_async(m, message, error);
1595         if (r < 0)
1596                 return r;
1597         if (r == 0)
1598                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1599
1600         r = manager_client_environment_modify(m, minus, plus);
1601         if (r < 0)
1602                 return r;
1603
1604         return sd_bus_reply_method_return(message, NULL);
1605 }
1606
1607 static int method_set_exit_code(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1608         Manager *m = userdata;
1609         uint8_t code;
1610         int r;
1611
1612         assert(message);
1613         assert(m);
1614
1615         r = mac_selinux_access_check(message, "exit", error);
1616         if (r < 0)
1617                 return r;
1618
1619         r = sd_bus_message_read_basic(message, 'y', &code);
1620         if (r < 0)
1621                 return r;
1622
1623         if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0)
1624                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "ExitCode can only be set for user service managers or in containers.");
1625
1626         m->return_value = code;
1627
1628         return sd_bus_reply_method_return(message, NULL);
1629 }
1630
1631 static int method_lookup_dynamic_user_by_name(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1632         Manager *m = userdata;
1633         const char *name;
1634         uid_t uid;
1635         int r;
1636
1637         assert(message);
1638         assert(m);
1639
1640         r = sd_bus_message_read_basic(message, 's', &name);
1641         if (r < 0)
1642                 return r;
1643
1644         if (!MANAGER_IS_SYSTEM(m))
1645                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Dynamic users are only supported in the system instance.");
1646         if (!valid_user_group_name(name, VALID_USER_RELAX))
1647                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "User name invalid: %s", name);
1648
1649         r = dynamic_user_lookup_name(m, name, &uid);
1650         if (r == -ESRCH)
1651                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_DYNAMIC_USER, "Dynamic user %s does not exist.", name);
1652         if (r < 0)
1653                 return r;
1654
1655         return sd_bus_reply_method_return(message, "u", (uint32_t) uid);
1656 }
1657
1658 static int method_lookup_dynamic_user_by_uid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1659         _cleanup_free_ char *name = NULL;
1660         Manager *m = userdata;
1661         uid_t uid;
1662         int r;
1663
1664         assert(message);
1665         assert(m);
1666
1667         assert_cc(sizeof(uid_t) == sizeof(uint32_t));
1668         r = sd_bus_message_read_basic(message, 'u', &uid);
1669         if (r < 0)
1670                 return r;
1671
1672         if (!MANAGER_IS_SYSTEM(m))
1673                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Dynamic users are only supported in the system instance.");
1674         if (!uid_is_valid(uid))
1675                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "User ID invalid: " UID_FMT, uid);
1676
1677         r = dynamic_user_lookup_uid(m, uid, &name);
1678         if (r == -ESRCH)
1679                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_DYNAMIC_USER, "Dynamic user ID " UID_FMT " does not exist.", uid);
1680         if (r < 0)
1681                 return r;
1682
1683         return sd_bus_reply_method_return(message, "s", name);
1684 }
1685
1686 static int method_get_dynamic_users(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1687         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1688         Manager *m = userdata;
1689         DynamicUser *d;
1690         Iterator i;
1691         int r;
1692
1693         assert(message);
1694         assert(m);
1695
1696         assert_cc(sizeof(uid_t) == sizeof(uint32_t));
1697
1698         if (!MANAGER_IS_SYSTEM(m))
1699                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Dynamic users are only supported in the system instance.");
1700
1701         r = sd_bus_message_new_method_return(message, &reply);
1702         if (r < 0)
1703                 return r;
1704
1705         r = sd_bus_message_open_container(reply, 'a', "(us)");
1706         if (r < 0)
1707                 return r;
1708
1709         HASHMAP_FOREACH(d, m->dynamic_users, i) {
1710                 uid_t uid;
1711
1712                 r = dynamic_user_current(d, &uid);
1713                 if (r == -EAGAIN) /* not realized yet? */
1714                         continue;
1715                 if (r < 0)
1716                         return sd_bus_error_setf(error, SD_BUS_ERROR_FAILED, "Failed to look up a dynamic user.");
1717
1718                 r = sd_bus_message_append(reply, "(us)", uid, d->name);
1719                 if (r < 0)
1720                         return r;
1721         }
1722
1723         r = sd_bus_message_close_container(reply);
1724         if (r < 0)
1725                 return r;
1726
1727         return sd_bus_send(NULL, reply, NULL);
1728 }
1729
1730 static int list_unit_files_by_patterns(sd_bus_message *message, void *userdata, sd_bus_error *error, char **states, char **patterns) {
1731         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1732         Manager *m = userdata;
1733         UnitFileList *item;
1734         Hashmap *h;
1735         Iterator i;
1736         int r;
1737
1738         assert(message);
1739         assert(m);
1740
1741         /* Anyone can call this method */
1742
1743         r = mac_selinux_access_check(message, "status", error);
1744         if (r < 0)
1745                 return r;
1746
1747         r = sd_bus_message_new_method_return(message, &reply);
1748         if (r < 0)
1749                 return r;
1750
1751         h = hashmap_new(&string_hash_ops);
1752         if (!h)
1753                 return -ENOMEM;
1754
1755         r = unit_file_get_list(m->unit_file_scope, NULL, h, states, patterns);
1756         if (r < 0)
1757                 goto fail;
1758
1759         r = sd_bus_message_open_container(reply, 'a', "(ss)");
1760         if (r < 0)
1761                 goto fail;
1762
1763         HASHMAP_FOREACH(item, h, i) {
1764
1765                 r = sd_bus_message_append(reply, "(ss)", item->path, unit_file_state_to_string(item->state));
1766                 if (r < 0)
1767                         goto fail;
1768         }
1769
1770         unit_file_list_free(h);
1771
1772         r = sd_bus_message_close_container(reply);
1773         if (r < 0)
1774                 return r;
1775
1776         return sd_bus_send(NULL, reply, NULL);
1777
1778 fail:
1779         unit_file_list_free(h);
1780         return r;
1781 }
1782
1783 static int method_list_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1784         return list_unit_files_by_patterns(message, userdata, error, NULL, NULL);
1785 }
1786
1787 static int method_list_unit_files_by_patterns(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1788         _cleanup_strv_free_ char **states = NULL;
1789         _cleanup_strv_free_ char **patterns = NULL;
1790         int r;
1791
1792         r = sd_bus_message_read_strv(message, &states);
1793         if (r < 0)
1794                 return r;
1795
1796         r = sd_bus_message_read_strv(message, &patterns);
1797         if (r < 0)
1798                 return r;
1799
1800         return list_unit_files_by_patterns(message, userdata, error, states, patterns);
1801 }
1802
1803 static int method_get_unit_file_state(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1804         Manager *m = userdata;
1805         const char *name;
1806         UnitFileState state;
1807         int r;
1808
1809         assert(message);
1810         assert(m);
1811
1812         /* Anyone can call this method */
1813
1814         r = mac_selinux_access_check(message, "status", error);
1815         if (r < 0)
1816                 return r;
1817
1818         r = sd_bus_message_read(message, "s", &name);
1819         if (r < 0)
1820                 return r;
1821
1822         r = unit_file_get_state(m->unit_file_scope, NULL, name, &state);
1823         if (r < 0)
1824                 return r;
1825
1826         return sd_bus_reply_method_return(message, "s", unit_file_state_to_string(state));
1827 }
1828
1829 static int method_get_default_target(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1830         _cleanup_free_ char *default_target = NULL;
1831         Manager *m = userdata;
1832         int r;
1833
1834         assert(message);
1835         assert(m);
1836
1837         /* Anyone can call this method */
1838
1839         r = mac_selinux_access_check(message, "status", error);
1840         if (r < 0)
1841                 return r;
1842
1843         r = unit_file_get_default(m->unit_file_scope, NULL, &default_target);
1844         if (r < 0)
1845                 return r;
1846
1847         return sd_bus_reply_method_return(message, "s", default_target);
1848 }
1849
1850 static int send_unit_files_changed(sd_bus *bus, void *userdata) {
1851         _cleanup_(sd_bus_message_unrefp) sd_bus_message *message = NULL;
1852         int r;
1853
1854         assert(bus);
1855
1856         r = sd_bus_message_new_signal(bus, &message, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "UnitFilesChanged");
1857         if (r < 0)
1858                 return r;
1859
1860         return sd_bus_send(bus, message, NULL);
1861 }
1862
1863 /* Create an error reply, using the error information from changes[]
1864  * if possible, and fall back to generating an error from error code c.
1865  * The error message only describes the first error.
1866  *
1867  * Coordinate with unit_file_dump_changes() in install.c.
1868  */
1869 static int install_error(
1870                 sd_bus_error *error,
1871                 int c,
1872                 UnitFileChange *changes,
1873                 size_t n_changes) {
1874
1875         size_t i;
1876         int r;
1877
1878         for (i = 0; i < n_changes; i++)
1879
1880                 switch(changes[i].type) {
1881
1882                 case 0 ... INT_MAX:
1883                         continue;
1884
1885                 case -EEXIST:
1886                         if (changes[i].source)
1887                                 r = sd_bus_error_setf(error, BUS_ERROR_UNIT_EXISTS,
1888                                                       "File %s already exists and is a symlink to %s.",
1889                                                       changes[i].path, changes[i].source);
1890                         else
1891                                 r = sd_bus_error_setf(error, BUS_ERROR_UNIT_EXISTS,
1892                                                       "File %s already exists.",
1893                                                       changes[i].path);
1894                         goto found;
1895
1896                 case -ERFKILL:
1897                         r = sd_bus_error_setf(error, BUS_ERROR_UNIT_MASKED,
1898                                               "Unit file %s is masked.", changes[i].path);
1899                         goto found;
1900
1901                 case -EADDRNOTAVAIL:
1902                         r = sd_bus_error_setf(error, BUS_ERROR_UNIT_GENERATED,
1903                                               "Unit %s is transient or generated.", changes[i].path);
1904                         goto found;
1905
1906                 case -EUCLEAN:
1907                         r = sd_bus_error_setf(error, BUS_ERROR_BAD_UNIT_SETTING,
1908                                               "\"%s\" is not a valid unit name.",
1909                                               changes[i].path);
1910                         goto found;
1911
1912                 case -ELOOP:
1913                         r = sd_bus_error_setf(error, BUS_ERROR_UNIT_LINKED,
1914                                               "Refusing to operate on alias name or linked unit file: %s",
1915                                               changes[i].path);
1916                         goto found;
1917
1918                 case -ENOENT:
1919                         r = sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT,
1920                                               "Unit file %s does not exist.", changes[i].path);
1921                         goto found;
1922
1923                 default:
1924                         r = sd_bus_error_set_errnof(error, changes[i].type, "File %s: %m", changes[i].path);
1925                         goto found;
1926                 }
1927
1928         r = c < 0 ? c : -EINVAL;
1929
1930  found:
1931         unit_file_changes_free(changes, n_changes);
1932         return r;
1933 }
1934
1935 static int reply_unit_file_changes_and_free(
1936                 Manager *m,
1937                 sd_bus_message *message,
1938                 int carries_install_info,
1939                 UnitFileChange *changes,
1940                 size_t n_changes,
1941                 sd_bus_error *error) {
1942
1943         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1944         bool bad = false, good = false;
1945         size_t i;
1946         int r;
1947
1948         if (unit_file_changes_have_modification(changes, n_changes)) {
1949                 r = bus_foreach_bus(m, NULL, send_unit_files_changed, NULL);
1950                 if (r < 0)
1951                         log_debug_errno(r, "Failed to send UnitFilesChanged signal: %m");
1952         }
1953
1954         r = sd_bus_message_new_method_return(message, &reply);
1955         if (r < 0)
1956                 goto fail;
1957
1958         if (carries_install_info >= 0) {
1959                 r = sd_bus_message_append(reply, "b", carries_install_info);
1960                 if (r < 0)
1961                         goto fail;
1962         }
1963
1964         r = sd_bus_message_open_container(reply, 'a', "(sss)");
1965         if (r < 0)
1966                 goto fail;
1967
1968         for (i = 0; i < n_changes; i++) {
1969
1970                 if (changes[i].type < 0) {
1971                         bad = true;
1972                         continue;
1973                 }
1974
1975                 r = sd_bus_message_append(
1976                                 reply, "(sss)",
1977                                 unit_file_change_type_to_string(changes[i].type),
1978                                 changes[i].path,
1979                                 changes[i].source);
1980                 if (r < 0)
1981                         goto fail;
1982
1983                 good = true;
1984         }
1985
1986         /* If there was a failed change, and no successful change, then return the first failure as proper method call
1987          * error. */
1988         if (bad && !good)
1989                 return install_error(error, 0, changes, n_changes);
1990
1991         r = sd_bus_message_close_container(reply);
1992         if (r < 0)
1993                 goto fail;
1994
1995         unit_file_changes_free(changes, n_changes);
1996         return sd_bus_send(NULL, reply, NULL);
1997
1998 fail:
1999         unit_file_changes_free(changes, n_changes);
2000         return r;
2001 }
2002
2003 static int method_enable_unit_files_generic(
2004                 sd_bus_message *message,
2005                 Manager *m,
2006                 int (*call)(UnitFileScope scope, UnitFileFlags flags, const char *root_dir, char *files[], UnitFileChange **changes, size_t *n_changes),
2007                 bool carries_install_info,
2008                 sd_bus_error *error) {
2009
2010         _cleanup_strv_free_ char **l = NULL;
2011         UnitFileChange *changes = NULL;
2012         size_t n_changes = 0;
2013         UnitFileFlags flags;
2014         int runtime, force, r;
2015
2016         assert(message);
2017         assert(m);
2018
2019         r = sd_bus_message_read_strv(message, &l);
2020         if (r < 0)
2021                 return r;
2022
2023         r = sd_bus_message_read(message, "bb", &runtime, &force);
2024         if (r < 0)
2025                 return r;
2026
2027         flags = unit_file_bools_to_flags(runtime, force);
2028
2029         r = bus_verify_manage_unit_files_async(m, message, error);
2030         if (r < 0)
2031                 return r;
2032         if (r == 0)
2033                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2034
2035         r = call(m->unit_file_scope, flags, NULL, l, &changes, &n_changes);
2036         if (r < 0)
2037                 return install_error(error, r, changes, n_changes);
2038
2039         return reply_unit_file_changes_and_free(m, message, carries_install_info ? r : -1, changes, n_changes, error);
2040 }
2041
2042 static int method_enable_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2043         return method_enable_unit_files_generic(message, userdata, unit_file_enable, true, error);
2044 }
2045
2046 static int method_reenable_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2047         return method_enable_unit_files_generic(message, userdata, unit_file_reenable, true, error);
2048 }
2049
2050 static int method_link_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2051         return method_enable_unit_files_generic(message, userdata, unit_file_link, false, error);
2052 }
2053
2054 static int unit_file_preset_without_mode(UnitFileScope scope, UnitFileFlags flags, const char *root_dir, char **files, UnitFileChange **changes, size_t *n_changes) {
2055         return unit_file_preset(scope, flags, root_dir, files, UNIT_FILE_PRESET_FULL, changes, n_changes);
2056 }
2057
2058 static int method_preset_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2059         return method_enable_unit_files_generic(message, userdata, unit_file_preset_without_mode, true, error);
2060 }
2061
2062 static int method_mask_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2063         return method_enable_unit_files_generic(message, userdata, unit_file_mask, false, error);
2064 }
2065
2066 static int method_preset_unit_files_with_mode(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2067
2068         _cleanup_strv_free_ char **l = NULL;
2069         UnitFileChange *changes = NULL;
2070         size_t n_changes = 0;
2071         Manager *m = userdata;
2072         UnitFilePresetMode mm;
2073         int runtime, force, r;
2074         UnitFileFlags flags;
2075         const char *mode;
2076
2077         assert(message);
2078         assert(m);
2079
2080         r = sd_bus_message_read_strv(message, &l);
2081         if (r < 0)
2082                 return r;
2083
2084         r = sd_bus_message_read(message, "sbb", &mode, &runtime, &force);
2085         if (r < 0)
2086                 return r;
2087
2088         flags = unit_file_bools_to_flags(runtime, force);
2089
2090         if (isempty(mode))
2091                 mm = UNIT_FILE_PRESET_FULL;
2092         else {
2093                 mm = unit_file_preset_mode_from_string(mode);
2094                 if (mm < 0)
2095                         return -EINVAL;
2096         }
2097
2098         r = bus_verify_manage_unit_files_async(m, message, error);
2099         if (r < 0)
2100                 return r;
2101         if (r == 0)
2102                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2103
2104         r = unit_file_preset(m->unit_file_scope, flags, NULL, l, mm, &changes, &n_changes);
2105         if (r < 0)
2106                 return install_error(error, r, changes, n_changes);
2107
2108         return reply_unit_file_changes_and_free(m, message, r, changes, n_changes, error);
2109 }
2110
2111 static int method_disable_unit_files_generic(
2112                 sd_bus_message *message,
2113                 Manager *m,
2114                 int (*call)(UnitFileScope scope, UnitFileFlags flags, const char *root_dir, char *files[], UnitFileChange **changes, size_t *n_changes),
2115                 sd_bus_error *error) {
2116
2117         _cleanup_strv_free_ char **l = NULL;
2118         UnitFileChange *changes = NULL;
2119         size_t n_changes = 0;
2120         int r, runtime;
2121
2122         assert(message);
2123         assert(m);
2124
2125         r = sd_bus_message_read_strv(message, &l);
2126         if (r < 0)
2127                 return r;
2128
2129         r = sd_bus_message_read(message, "b", &runtime);
2130         if (r < 0)
2131                 return r;
2132
2133         r = bus_verify_manage_unit_files_async(m, message, error);
2134         if (r < 0)
2135                 return r;
2136         if (r == 0)
2137                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2138
2139         r = call(m->unit_file_scope, runtime ? UNIT_FILE_RUNTIME : 0, NULL, l, &changes, &n_changes);
2140         if (r < 0)
2141                 return install_error(error, r, changes, n_changes);
2142
2143         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2144 }
2145
2146 static int method_disable_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2147         return method_disable_unit_files_generic(message, userdata, unit_file_disable, error);
2148 }
2149
2150 static int method_unmask_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2151         return method_disable_unit_files_generic(message, userdata, unit_file_unmask, error);
2152 }
2153
2154 static int method_revert_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2155         _cleanup_strv_free_ char **l = NULL;
2156         UnitFileChange *changes = NULL;
2157         size_t n_changes = 0;
2158         Manager *m = userdata;
2159         int r;
2160
2161         assert(message);
2162         assert(m);
2163
2164         r = sd_bus_message_read_strv(message, &l);
2165         if (r < 0)
2166                 return r;
2167
2168         r = bus_verify_manage_unit_files_async(m, message, error);
2169         if (r < 0)
2170                 return r;
2171         if (r == 0)
2172                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2173
2174         r = unit_file_revert(m->unit_file_scope, NULL, l, &changes, &n_changes);
2175         if (r < 0)
2176                 return install_error(error, r, changes, n_changes);
2177
2178         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2179 }
2180
2181 static int method_set_default_target(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2182         UnitFileChange *changes = NULL;
2183         size_t n_changes = 0;
2184         Manager *m = userdata;
2185         const char *name;
2186         int force, r;
2187
2188         assert(message);
2189         assert(m);
2190
2191         r = mac_selinux_access_check(message, "enable", error);
2192         if (r < 0)
2193                 return r;
2194
2195         r = sd_bus_message_read(message, "sb", &name, &force);
2196         if (r < 0)
2197                 return r;
2198
2199         r = bus_verify_manage_unit_files_async(m, message, error);
2200         if (r < 0)
2201                 return r;
2202         if (r == 0)
2203                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2204
2205         r = unit_file_set_default(m->unit_file_scope, force ? UNIT_FILE_FORCE : 0, NULL, name, &changes, &n_changes);
2206         if (r < 0)
2207                 return install_error(error, r, changes, n_changes);
2208
2209         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2210 }
2211
2212 static int method_preset_all_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2213         UnitFileChange *changes = NULL;
2214         size_t n_changes = 0;
2215         Manager *m = userdata;
2216         UnitFilePresetMode mm;
2217         const char *mode;
2218         UnitFileFlags flags;
2219         int force, runtime, r;
2220
2221         assert(message);
2222         assert(m);
2223
2224         r = mac_selinux_access_check(message, "enable", error);
2225         if (r < 0)
2226                 return r;
2227
2228         r = sd_bus_message_read(message, "sbb", &mode, &runtime, &force);
2229         if (r < 0)
2230                 return r;
2231
2232         flags = unit_file_bools_to_flags(runtime, force);
2233
2234         if (isempty(mode))
2235                 mm = UNIT_FILE_PRESET_FULL;
2236         else {
2237                 mm = unit_file_preset_mode_from_string(mode);
2238                 if (mm < 0)
2239                         return -EINVAL;
2240         }
2241
2242         r = bus_verify_manage_unit_files_async(m, message, error);
2243         if (r < 0)
2244                 return r;
2245         if (r == 0)
2246                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2247
2248         r = unit_file_preset_all(m->unit_file_scope, flags, NULL, mm, &changes, &n_changes);
2249         if (r < 0)
2250                 return install_error(error, r, changes, n_changes);
2251
2252         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2253 }
2254
2255 static int method_add_dependency_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2256         _cleanup_strv_free_ char **l = NULL;
2257         Manager *m = userdata;
2258         UnitFileChange *changes = NULL;
2259         size_t n_changes = 0;
2260         int runtime, force, r;
2261         char *target, *type;
2262         UnitDependency dep;
2263         UnitFileFlags flags;
2264
2265         assert(message);
2266         assert(m);
2267
2268         r = bus_verify_manage_unit_files_async(m, message, error);
2269         if (r < 0)
2270                 return r;
2271         if (r == 0)
2272                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2273
2274         r = sd_bus_message_read_strv(message, &l);
2275         if (r < 0)
2276                 return r;
2277
2278         r = sd_bus_message_read(message, "ssbb", &target, &type, &runtime, &force);
2279         if (r < 0)
2280                 return r;
2281
2282         flags = unit_file_bools_to_flags(runtime, force);
2283
2284         dep = unit_dependency_from_string(type);
2285         if (dep < 0)
2286                 return -EINVAL;
2287
2288         r = unit_file_add_dependency(m->unit_file_scope, flags, NULL, l, target, dep, &changes, &n_changes);
2289         if (r < 0)
2290                 return install_error(error, r, changes, n_changes);
2291
2292         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2293 }
2294
2295 static int method_get_unit_file_links(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2296         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
2297         UnitFileChange *changes = NULL;
2298         size_t n_changes = 0, i;
2299         UnitFileFlags flags;
2300         const char *name;
2301         char **p;
2302         int runtime, r;
2303
2304         r = sd_bus_message_read(message, "sb", &name, &runtime);
2305         if (r < 0)
2306                 return r;
2307
2308         r = sd_bus_message_new_method_return(message, &reply);
2309         if (r < 0)
2310                 return r;
2311
2312         r = sd_bus_message_open_container(reply, SD_BUS_TYPE_ARRAY, "s");
2313         if (r < 0)
2314                 return r;
2315
2316         p = STRV_MAKE(name);
2317         flags = UNIT_FILE_DRY_RUN |
2318                 (runtime ? UNIT_FILE_RUNTIME : 0);
2319
2320         r = unit_file_disable(UNIT_FILE_SYSTEM, flags, NULL, p, &changes, &n_changes);
2321         if (r < 0)
2322                 return log_error_errno(r, "Failed to get file links for %s: %m", name);
2323
2324         for (i = 0; i < n_changes; i++)
2325                 if (changes[i].type == UNIT_FILE_UNLINK) {
2326                         r = sd_bus_message_append(reply, "s", changes[i].path);
2327                         if (r < 0)
2328                                 return r;
2329                 }
2330
2331         r = sd_bus_message_close_container(reply);
2332         if (r < 0)
2333                 return r;
2334
2335         return sd_bus_send(NULL, reply, NULL);
2336 }
2337
2338 static int method_get_job_waiting(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2339         Manager *m = userdata;
2340         uint32_t id;
2341         Job *j;
2342         int r;
2343
2344         assert(message);
2345         assert(m);
2346
2347         r = sd_bus_message_read(message, "u", &id);
2348         if (r < 0)
2349                 return r;
2350
2351         j = manager_get_job(m, id);
2352         if (!j)
2353                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
2354
2355         return bus_job_method_get_waiting_jobs(message, j, error);
2356 }
2357
2358 static int method_abandon_scope(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2359         Manager *m = userdata;
2360         const char *name;
2361         Unit *u;
2362         int r;
2363
2364         assert(message);
2365         assert(m);
2366
2367         r = sd_bus_message_read(message, "s", &name);
2368         if (r < 0)
2369                 return r;
2370
2371         r = bus_get_unit_by_name(m, message, name, &u, error);
2372         if (r < 0)
2373                 return r;
2374
2375         if (u->type != UNIT_SCOPE)
2376                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unit '%s' is not a scope unit, refusing.", name);
2377
2378         return bus_scope_method_abandon(message, u, error);
2379 }
2380
2381 const sd_bus_vtable bus_manager_vtable[] = {
2382         SD_BUS_VTABLE_START(0),
2383
2384         SD_BUS_PROPERTY("Version", "s", property_get_version, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2385         SD_BUS_PROPERTY("Features", "s", property_get_features, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2386         SD_BUS_PROPERTY("Virtualization", "s", property_get_virtualization, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2387         SD_BUS_PROPERTY("Architecture", "s", property_get_architecture, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2388         SD_BUS_PROPERTY("Tainted", "s", property_get_tainted, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2389         BUS_PROPERTY_DUAL_TIMESTAMP("FirmwareTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_FIRMWARE]), SD_BUS_VTABLE_PROPERTY_CONST),
2390         BUS_PROPERTY_DUAL_TIMESTAMP("LoaderTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_LOADER]), SD_BUS_VTABLE_PROPERTY_CONST),
2391         BUS_PROPERTY_DUAL_TIMESTAMP("KernelTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_KERNEL]), SD_BUS_VTABLE_PROPERTY_CONST),
2392         BUS_PROPERTY_DUAL_TIMESTAMP("InitRDTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_INITRD]), SD_BUS_VTABLE_PROPERTY_CONST),
2393         BUS_PROPERTY_DUAL_TIMESTAMP("UserspaceTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_USERSPACE]), SD_BUS_VTABLE_PROPERTY_CONST),
2394         BUS_PROPERTY_DUAL_TIMESTAMP("FinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2395         BUS_PROPERTY_DUAL_TIMESTAMP("SecurityStartTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_SECURITY_START]), SD_BUS_VTABLE_PROPERTY_CONST),
2396         BUS_PROPERTY_DUAL_TIMESTAMP("SecurityFinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_SECURITY_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2397         BUS_PROPERTY_DUAL_TIMESTAMP("GeneratorsStartTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_GENERATORS_START]), SD_BUS_VTABLE_PROPERTY_CONST),
2398         BUS_PROPERTY_DUAL_TIMESTAMP("GeneratorsFinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_GENERATORS_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2399         BUS_PROPERTY_DUAL_TIMESTAMP("UnitsLoadStartTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_UNITS_LOAD_START]), SD_BUS_VTABLE_PROPERTY_CONST),
2400         BUS_PROPERTY_DUAL_TIMESTAMP("UnitsLoadFinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_UNITS_LOAD_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2401         BUS_PROPERTY_DUAL_TIMESTAMP("InitRDSecurityStartTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_INITRD_SECURITY_START]), SD_BUS_VTABLE_PROPERTY_CONST),
2402         BUS_PROPERTY_DUAL_TIMESTAMP("InitRDSecurityFinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_INITRD_SECURITY_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2403         BUS_PROPERTY_DUAL_TIMESTAMP("InitRDGeneratorsStartTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_INITRD_GENERATORS_START]), SD_BUS_VTABLE_PROPERTY_CONST),
2404         BUS_PROPERTY_DUAL_TIMESTAMP("InitRDGeneratorsFinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_INITRD_GENERATORS_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2405         BUS_PROPERTY_DUAL_TIMESTAMP("InitRDUnitsLoadStartTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_INITRD_UNITS_LOAD_START]), SD_BUS_VTABLE_PROPERTY_CONST),
2406         BUS_PROPERTY_DUAL_TIMESTAMP("InitRDUnitsLoadFinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_INITRD_UNITS_LOAD_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2407         SD_BUS_WRITABLE_PROPERTY("LogLevel", "s", property_get_log_level, property_set_log_level, 0, 0),
2408         SD_BUS_WRITABLE_PROPERTY("LogTarget", "s", property_get_log_target, property_set_log_target, 0, 0),
2409         SD_BUS_PROPERTY("NNames", "u", property_get_hashmap_size, offsetof(Manager, units), 0),
2410         SD_BUS_PROPERTY("NFailedUnits", "u", property_get_set_size, offsetof(Manager, failed_units), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
2411         SD_BUS_PROPERTY("NJobs", "u", property_get_hashmap_size, offsetof(Manager, jobs), 0),
2412         SD_BUS_PROPERTY("NInstalledJobs", "u", bus_property_get_unsigned, offsetof(Manager, n_installed_jobs), 0),
2413         SD_BUS_PROPERTY("NFailedJobs", "u", bus_property_get_unsigned, offsetof(Manager, n_failed_jobs), 0),
2414         SD_BUS_PROPERTY("Progress", "d", property_get_progress, 0, 0),
2415         SD_BUS_PROPERTY("Environment", "as", property_get_environment, 0, 0),
2416         SD_BUS_PROPERTY("ConfirmSpawn", "b", bus_property_get_bool, offsetof(Manager, confirm_spawn), SD_BUS_VTABLE_PROPERTY_CONST),
2417         SD_BUS_PROPERTY("ShowStatus", "b", property_get_show_status, 0, 0),
2418         SD_BUS_PROPERTY("UnitPath", "as", NULL, offsetof(Manager, lookup_paths.search_path), SD_BUS_VTABLE_PROPERTY_CONST),
2419         SD_BUS_PROPERTY("DefaultStandardOutput", "s", bus_property_get_exec_output, offsetof(Manager, default_std_output), SD_BUS_VTABLE_PROPERTY_CONST),
2420         SD_BUS_PROPERTY("DefaultStandardError", "s", bus_property_get_exec_output, offsetof(Manager, default_std_output), SD_BUS_VTABLE_PROPERTY_CONST),
2421         SD_BUS_WRITABLE_PROPERTY("RuntimeWatchdogUSec", "t", bus_property_get_usec, property_set_runtime_watchdog, offsetof(Manager, runtime_watchdog), 0),
2422         SD_BUS_WRITABLE_PROPERTY("RebootWatchdogUSec", "t", bus_property_get_usec, bus_property_set_usec, offsetof(Manager, reboot_watchdog), 0),
2423         /* The following item is an obsolete alias */
2424         SD_BUS_WRITABLE_PROPERTY("ShutdownWatchdogUSec", "t", bus_property_get_usec, bus_property_set_usec, offsetof(Manager, reboot_watchdog), SD_BUS_VTABLE_HIDDEN),
2425         SD_BUS_WRITABLE_PROPERTY("KExecWatchdogUSec", "t", bus_property_get_usec, bus_property_set_usec, offsetof(Manager, kexec_watchdog), 0),
2426         SD_BUS_WRITABLE_PROPERTY("ServiceWatchdogs", "b", bus_property_get_bool, bus_property_set_bool, offsetof(Manager, service_watchdogs), 0),
2427         SD_BUS_PROPERTY("ControlGroup", "s", NULL, offsetof(Manager, cgroup_root), 0),
2428         SD_BUS_PROPERTY("SystemState", "s", property_get_system_state, 0, 0),
2429         SD_BUS_PROPERTY("ExitCode", "y", bus_property_get_unsigned, offsetof(Manager, return_value), 0),
2430         SD_BUS_PROPERTY("DefaultTimerAccuracyUSec", "t", bus_property_get_usec, offsetof(Manager, default_timer_accuracy_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2431         SD_BUS_PROPERTY("DefaultTimeoutStartUSec", "t", bus_property_get_usec, offsetof(Manager, default_timeout_start_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2432         SD_BUS_PROPERTY("DefaultTimeoutStopUSec", "t", bus_property_get_usec, offsetof(Manager, default_timeout_stop_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2433         SD_BUS_PROPERTY("DefaultTimeoutAbortUSec", "t", property_get_default_timeout_abort_usec, 0, 0),
2434         SD_BUS_PROPERTY("DefaultRestartUSec", "t", bus_property_get_usec, offsetof(Manager, default_restart_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2435         SD_BUS_PROPERTY("DefaultStartLimitIntervalUSec", "t", bus_property_get_usec, offsetof(Manager, default_start_limit_interval), SD_BUS_VTABLE_PROPERTY_CONST),
2436         /* The following two items are obsolete alias */
2437         SD_BUS_PROPERTY("DefaultStartLimitIntervalSec", "t", bus_property_get_usec, offsetof(Manager, default_start_limit_interval), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
2438         SD_BUS_PROPERTY("DefaultStartLimitInterval", "t", bus_property_get_usec, offsetof(Manager, default_start_limit_interval), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
2439         SD_BUS_PROPERTY("DefaultStartLimitBurst", "u", bus_property_get_unsigned, offsetof(Manager, default_start_limit_burst), SD_BUS_VTABLE_PROPERTY_CONST),
2440         SD_BUS_PROPERTY("DefaultCPUAccounting", "b", bus_property_get_bool, offsetof(Manager, default_cpu_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
2441         SD_BUS_PROPERTY("DefaultBlockIOAccounting", "b", bus_property_get_bool, offsetof(Manager, default_blockio_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
2442         SD_BUS_PROPERTY("DefaultMemoryAccounting", "b", bus_property_get_bool, offsetof(Manager, default_memory_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
2443         SD_BUS_PROPERTY("DefaultTasksAccounting", "b", bus_property_get_bool, offsetof(Manager, default_tasks_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
2444         SD_BUS_PROPERTY("DefaultLimitCPU", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CPU]), SD_BUS_VTABLE_PROPERTY_CONST),
2445         SD_BUS_PROPERTY("DefaultLimitCPUSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CPU]), SD_BUS_VTABLE_PROPERTY_CONST),
2446         SD_BUS_PROPERTY("DefaultLimitFSIZE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_FSIZE]), SD_BUS_VTABLE_PROPERTY_CONST),
2447         SD_BUS_PROPERTY("DefaultLimitFSIZESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_FSIZE]), SD_BUS_VTABLE_PROPERTY_CONST),
2448         SD_BUS_PROPERTY("DefaultLimitDATA", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_DATA]), SD_BUS_VTABLE_PROPERTY_CONST),
2449         SD_BUS_PROPERTY("DefaultLimitDATASoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_DATA]), SD_BUS_VTABLE_PROPERTY_CONST),
2450         SD_BUS_PROPERTY("DefaultLimitSTACK", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_STACK]), SD_BUS_VTABLE_PROPERTY_CONST),
2451         SD_BUS_PROPERTY("DefaultLimitSTACKSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_STACK]), SD_BUS_VTABLE_PROPERTY_CONST),
2452         SD_BUS_PROPERTY("DefaultLimitCORE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CORE]), SD_BUS_VTABLE_PROPERTY_CONST),
2453         SD_BUS_PROPERTY("DefaultLimitCORESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CORE]), SD_BUS_VTABLE_PROPERTY_CONST),
2454         SD_BUS_PROPERTY("DefaultLimitRSS", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RSS]), SD_BUS_VTABLE_PROPERTY_CONST),
2455         SD_BUS_PROPERTY("DefaultLimitRSSSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RSS]), SD_BUS_VTABLE_PROPERTY_CONST),
2456         SD_BUS_PROPERTY("DefaultLimitNOFILE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NOFILE]), SD_BUS_VTABLE_PROPERTY_CONST),
2457         SD_BUS_PROPERTY("DefaultLimitNOFILESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NOFILE]), SD_BUS_VTABLE_PROPERTY_CONST),
2458         SD_BUS_PROPERTY("DefaultLimitAS", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_AS]), SD_BUS_VTABLE_PROPERTY_CONST),
2459         SD_BUS_PROPERTY("DefaultLimitASSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_AS]), SD_BUS_VTABLE_PROPERTY_CONST),
2460         SD_BUS_PROPERTY("DefaultLimitNPROC", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NPROC]), SD_BUS_VTABLE_PROPERTY_CONST),
2461         SD_BUS_PROPERTY("DefaultLimitNPROCSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NPROC]), SD_BUS_VTABLE_PROPERTY_CONST),
2462         SD_BUS_PROPERTY("DefaultLimitMEMLOCK", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MEMLOCK]), SD_BUS_VTABLE_PROPERTY_CONST),
2463         SD_BUS_PROPERTY("DefaultLimitMEMLOCKSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MEMLOCK]), SD_BUS_VTABLE_PROPERTY_CONST),
2464         SD_BUS_PROPERTY("DefaultLimitLOCKS", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_LOCKS]), SD_BUS_VTABLE_PROPERTY_CONST),
2465         SD_BUS_PROPERTY("DefaultLimitLOCKSSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_LOCKS]), SD_BUS_VTABLE_PROPERTY_CONST),
2466         SD_BUS_PROPERTY("DefaultLimitSIGPENDING", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_SIGPENDING]), SD_BUS_VTABLE_PROPERTY_CONST),
2467         SD_BUS_PROPERTY("DefaultLimitSIGPENDINGSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_SIGPENDING]), SD_BUS_VTABLE_PROPERTY_CONST),
2468         SD_BUS_PROPERTY("DefaultLimitMSGQUEUE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MSGQUEUE]), SD_BUS_VTABLE_PROPERTY_CONST),
2469         SD_BUS_PROPERTY("DefaultLimitMSGQUEUESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MSGQUEUE]), SD_BUS_VTABLE_PROPERTY_CONST),
2470         SD_BUS_PROPERTY("DefaultLimitNICE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NICE]), SD_BUS_VTABLE_PROPERTY_CONST),
2471         SD_BUS_PROPERTY("DefaultLimitNICESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NICE]), SD_BUS_VTABLE_PROPERTY_CONST),
2472         SD_BUS_PROPERTY("DefaultLimitRTPRIO", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTPRIO]), SD_BUS_VTABLE_PROPERTY_CONST),
2473         SD_BUS_PROPERTY("DefaultLimitRTPRIOSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTPRIO]), SD_BUS_VTABLE_PROPERTY_CONST),
2474         SD_BUS_PROPERTY("DefaultLimitRTTIME", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTTIME]), SD_BUS_VTABLE_PROPERTY_CONST),
2475         SD_BUS_PROPERTY("DefaultLimitRTTIMESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTTIME]), SD_BUS_VTABLE_PROPERTY_CONST),
2476         SD_BUS_PROPERTY("DefaultTasksMax", "t", bus_property_get_tasks_max, offsetof(Manager, default_tasks_max), 0),
2477         SD_BUS_PROPERTY("TimerSlackNSec", "t", property_get_timer_slack_nsec, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2478         SD_BUS_PROPERTY("DefaultOOMPolicy", "s", bus_property_get_oom_policy, offsetof(Manager, default_oom_policy), SD_BUS_VTABLE_PROPERTY_CONST),
2479
2480         SD_BUS_METHOD("GetUnit", "s", "o", method_get_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2481         SD_BUS_METHOD("GetUnitByPID", "u", "o", method_get_unit_by_pid, SD_BUS_VTABLE_UNPRIVILEGED),
2482         SD_BUS_METHOD("GetUnitByInvocationID", "ay", "o", method_get_unit_by_invocation_id, SD_BUS_VTABLE_UNPRIVILEGED),
2483         SD_BUS_METHOD("GetUnitByControlGroup", "s", "o", method_get_unit_by_control_group, SD_BUS_VTABLE_UNPRIVILEGED),
2484         SD_BUS_METHOD("LoadUnit", "s", "o", method_load_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2485         SD_BUS_METHOD("StartUnit", "ss", "o", method_start_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2486         SD_BUS_METHOD("StartUnitReplace", "sss", "o", method_start_unit_replace, SD_BUS_VTABLE_UNPRIVILEGED),
2487         SD_BUS_METHOD("StopUnit", "ss", "o", method_stop_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2488         SD_BUS_METHOD("ReloadUnit", "ss", "o", method_reload_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2489         SD_BUS_METHOD("RestartUnit", "ss", "o", method_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2490         SD_BUS_METHOD("TryRestartUnit", "ss", "o", method_try_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2491         SD_BUS_METHOD("ReloadOrRestartUnit", "ss", "o", method_reload_or_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2492         SD_BUS_METHOD("ReloadOrTryRestartUnit", "ss", "o", method_reload_or_try_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2493         SD_BUS_METHOD("EnqueueUnitJob", "sss", "uososa(uosos)", method_enqueue_unit_job, SD_BUS_VTABLE_UNPRIVILEGED),
2494         SD_BUS_METHOD("KillUnit", "ssi", NULL, method_kill_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2495         SD_BUS_METHOD("CleanUnit", "sas", NULL, method_clean_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2496         SD_BUS_METHOD("ResetFailedUnit", "s", NULL, method_reset_failed_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2497         SD_BUS_METHOD("SetUnitProperties", "sba(sv)", NULL, method_set_unit_properties, SD_BUS_VTABLE_UNPRIVILEGED),
2498         SD_BUS_METHOD("RefUnit", "s", NULL, method_ref_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2499         SD_BUS_METHOD("UnrefUnit", "s", NULL, method_unref_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2500         SD_BUS_METHOD("StartTransientUnit", "ssa(sv)a(sa(sv))", "o", method_start_transient_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2501         SD_BUS_METHOD("GetUnitProcesses", "s", "a(sus)", method_get_unit_processes, SD_BUS_VTABLE_UNPRIVILEGED),
2502         SD_BUS_METHOD("AttachProcessesToUnit", "ssau", NULL, method_attach_processes_to_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2503         SD_BUS_METHOD("AbandonScope", "s", NULL, method_abandon_scope, SD_BUS_VTABLE_UNPRIVILEGED),
2504         SD_BUS_METHOD("GetJob", "u", "o", method_get_job, SD_BUS_VTABLE_UNPRIVILEGED),
2505         SD_BUS_METHOD("GetJobAfter", "u", "a(usssoo)", method_get_job_waiting, SD_BUS_VTABLE_UNPRIVILEGED),
2506         SD_BUS_METHOD("GetJobBefore", "u", "a(usssoo)", method_get_job_waiting, SD_BUS_VTABLE_UNPRIVILEGED),
2507         SD_BUS_METHOD("CancelJob", "u", NULL, method_cancel_job, SD_BUS_VTABLE_UNPRIVILEGED),
2508         SD_BUS_METHOD("ClearJobs", NULL, NULL, method_clear_jobs, SD_BUS_VTABLE_UNPRIVILEGED),
2509         SD_BUS_METHOD("ResetFailed", NULL, NULL, method_reset_failed, SD_BUS_VTABLE_UNPRIVILEGED),
2510         SD_BUS_METHOD("ListUnits", NULL, "a(ssssssouso)", method_list_units, SD_BUS_VTABLE_UNPRIVILEGED),
2511         SD_BUS_METHOD("ListUnitsFiltered", "as", "a(ssssssouso)", method_list_units_filtered, SD_BUS_VTABLE_UNPRIVILEGED),
2512         SD_BUS_METHOD("ListUnitsByPatterns", "asas", "a(ssssssouso)", method_list_units_by_patterns, SD_BUS_VTABLE_UNPRIVILEGED),
2513         SD_BUS_METHOD("ListUnitsByNames", "as", "a(ssssssouso)", method_list_units_by_names, SD_BUS_VTABLE_UNPRIVILEGED),
2514         SD_BUS_METHOD("ListJobs", NULL, "a(usssoo)", method_list_jobs, SD_BUS_VTABLE_UNPRIVILEGED),
2515         SD_BUS_METHOD("Subscribe", NULL, NULL, method_subscribe, SD_BUS_VTABLE_UNPRIVILEGED),
2516         SD_BUS_METHOD("Unsubscribe", NULL, NULL, method_unsubscribe, SD_BUS_VTABLE_UNPRIVILEGED),
2517         SD_BUS_METHOD("Dump", NULL, "s", method_dump, SD_BUS_VTABLE_UNPRIVILEGED),
2518         SD_BUS_METHOD("DumpByFileDescriptor", NULL, "h", method_dump_by_fd, SD_BUS_VTABLE_UNPRIVILEGED),
2519         SD_BUS_METHOD("CreateSnapshot", "sb", "o", method_refuse_snapshot, SD_BUS_VTABLE_UNPRIVILEGED|SD_BUS_VTABLE_HIDDEN),
2520         SD_BUS_METHOD("RemoveSnapshot", "s", NULL, method_refuse_snapshot, SD_BUS_VTABLE_UNPRIVILEGED|SD_BUS_VTABLE_HIDDEN),
2521         SD_BUS_METHOD("Reload", NULL, NULL, method_reload, SD_BUS_VTABLE_UNPRIVILEGED),
2522         SD_BUS_METHOD("Reexecute", NULL, NULL, method_reexecute, SD_BUS_VTABLE_UNPRIVILEGED),
2523         SD_BUS_METHOD("Exit", NULL, NULL, method_exit, 0),
2524         SD_BUS_METHOD("Reboot", NULL, NULL, method_reboot, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2525         SD_BUS_METHOD("PowerOff", NULL, NULL, method_poweroff, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2526         SD_BUS_METHOD("Halt", NULL, NULL, method_halt, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2527         SD_BUS_METHOD("KExec", NULL, NULL, method_kexec, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2528         SD_BUS_METHOD("SwitchRoot", "ss", NULL, method_switch_root, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2529         SD_BUS_METHOD("SetEnvironment", "as", NULL, method_set_environment, SD_BUS_VTABLE_UNPRIVILEGED),
2530         SD_BUS_METHOD("UnsetEnvironment", "as", NULL, method_unset_environment, SD_BUS_VTABLE_UNPRIVILEGED),
2531         SD_BUS_METHOD("UnsetAndSetEnvironment", "asas", NULL, method_unset_and_set_environment, SD_BUS_VTABLE_UNPRIVILEGED),
2532         SD_BUS_METHOD("ListUnitFiles", NULL, "a(ss)", method_list_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2533         SD_BUS_METHOD("ListUnitFilesByPatterns", "asas", "a(ss)", method_list_unit_files_by_patterns, SD_BUS_VTABLE_UNPRIVILEGED),
2534         SD_BUS_METHOD("GetUnitFileState", "s", "s", method_get_unit_file_state, SD_BUS_VTABLE_UNPRIVILEGED),
2535         SD_BUS_METHOD("EnableUnitFiles", "asbb", "ba(sss)", method_enable_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2536         SD_BUS_METHOD("DisableUnitFiles", "asb", "a(sss)", method_disable_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2537         SD_BUS_METHOD("ReenableUnitFiles", "asbb", "ba(sss)", method_reenable_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2538         SD_BUS_METHOD("LinkUnitFiles", "asbb", "a(sss)", method_link_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2539         SD_BUS_METHOD("PresetUnitFiles", "asbb", "ba(sss)", method_preset_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2540         SD_BUS_METHOD("PresetUnitFilesWithMode", "assbb", "ba(sss)", method_preset_unit_files_with_mode, SD_BUS_VTABLE_UNPRIVILEGED),
2541         SD_BUS_METHOD("MaskUnitFiles", "asbb", "a(sss)", method_mask_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2542         SD_BUS_METHOD("UnmaskUnitFiles", "asb", "a(sss)", method_unmask_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2543         SD_BUS_METHOD("RevertUnitFiles", "as", "a(sss)", method_revert_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2544         SD_BUS_METHOD("SetDefaultTarget", "sb", "a(sss)", method_set_default_target, SD_BUS_VTABLE_UNPRIVILEGED),
2545         SD_BUS_METHOD("GetDefaultTarget", NULL, "s", method_get_default_target, SD_BUS_VTABLE_UNPRIVILEGED),
2546         SD_BUS_METHOD("PresetAllUnitFiles", "sbb", "a(sss)", method_preset_all_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2547         SD_BUS_METHOD("AddDependencyUnitFiles", "asssbb", "a(sss)", method_add_dependency_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2548         SD_BUS_METHOD("GetUnitFileLinks", "sb", "as", method_get_unit_file_links, SD_BUS_VTABLE_UNPRIVILEGED),
2549         SD_BUS_METHOD("SetExitCode", "y", NULL, method_set_exit_code, SD_BUS_VTABLE_UNPRIVILEGED),
2550         SD_BUS_METHOD("LookupDynamicUserByName", "s", "u", method_lookup_dynamic_user_by_name, SD_BUS_VTABLE_UNPRIVILEGED),
2551         SD_BUS_METHOD("LookupDynamicUserByUID", "u", "s", method_lookup_dynamic_user_by_uid, SD_BUS_VTABLE_UNPRIVILEGED),
2552         SD_BUS_METHOD("GetDynamicUsers", NULL, "a(us)", method_get_dynamic_users, SD_BUS_VTABLE_UNPRIVILEGED),
2553
2554         SD_BUS_SIGNAL("UnitNew", "so", 0),
2555         SD_BUS_SIGNAL("UnitRemoved", "so", 0),
2556         SD_BUS_SIGNAL("JobNew", "uos", 0),
2557         SD_BUS_SIGNAL("JobRemoved", "uoss", 0),
2558         SD_BUS_SIGNAL("StartupFinished", "tttttt", 0),
2559         SD_BUS_SIGNAL("UnitFilesChanged", NULL, 0),
2560         SD_BUS_SIGNAL("Reloading", "b", 0),
2561
2562         SD_BUS_VTABLE_END
2563 };
2564
2565 static int send_finished(sd_bus *bus, void *userdata) {
2566         _cleanup_(sd_bus_message_unrefp) sd_bus_message *message = NULL;
2567         usec_t *times = userdata;
2568         int r;
2569
2570         assert(bus);
2571         assert(times);
2572
2573         r = sd_bus_message_new_signal(bus, &message, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "StartupFinished");
2574         if (r < 0)
2575                 return r;
2576
2577         r = sd_bus_message_append(message, "tttttt", times[0], times[1], times[2], times[3], times[4], times[5]);
2578         if (r < 0)
2579                 return r;
2580
2581         return sd_bus_send(bus, message, NULL);
2582 }
2583
2584 void bus_manager_send_finished(
2585                 Manager *m,
2586                 usec_t firmware_usec,
2587                 usec_t loader_usec,
2588                 usec_t kernel_usec,
2589                 usec_t initrd_usec,
2590                 usec_t userspace_usec,
2591                 usec_t total_usec) {
2592
2593         int r;
2594
2595         assert(m);
2596
2597         r = bus_foreach_bus(
2598                         m,
2599                         NULL,
2600                         send_finished,
2601                         (usec_t[6]) {
2602                                 firmware_usec,
2603                                 loader_usec,
2604                                 kernel_usec,
2605                                 initrd_usec,
2606                                 userspace_usec,
2607                                 total_usec
2608                         });
2609         if (r < 0)
2610                 log_debug_errno(r, "Failed to send finished signal: %m");
2611 }
2612
2613 static int send_reloading(sd_bus *bus, void *userdata) {
2614         _cleanup_(sd_bus_message_unrefp) sd_bus_message *message = NULL;
2615         int r;
2616
2617         assert(bus);
2618
2619         r = sd_bus_message_new_signal(bus, &message, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "Reloading");
2620         if (r < 0)
2621                 return r;
2622
2623         r = sd_bus_message_append(message, "b", PTR_TO_INT(userdata));
2624         if (r < 0)
2625                 return r;
2626
2627         return sd_bus_send(bus, message, NULL);
2628 }
2629
2630 void bus_manager_send_reloading(Manager *m, bool active) {
2631         int r;
2632
2633         assert(m);
2634
2635         r = bus_foreach_bus(m, NULL, send_reloading, INT_TO_PTR(active));
2636         if (r < 0)
2637                 log_debug_errno(r, "Failed to send reloading signal: %m");
2638 }
2639
2640 static int send_changed_signal(sd_bus *bus, void *userdata) {
2641         assert(bus);
2642
2643         return sd_bus_emit_properties_changed_strv(bus,
2644                                                    "/org/freedesktop/systemd1",
2645                                                    "org.freedesktop.systemd1.Manager",
2646                                                    NULL);
2647 }
2648
2649 void bus_manager_send_change_signal(Manager *m) {
2650         int r;
2651
2652         assert(m);
2653
2654         r = bus_foreach_bus(m, NULL, send_changed_signal, NULL);
2655         if (r < 0)
2656                 log_debug_errno(r, "Failed to send manager change signal: %m");
2657 }