src/core/dbus-manager.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include <errno.h>
   4 #include <sys/prctl.h>
   5 #include <sys/statvfs.h>
   6 #include <unistd.h>
   7
   8 #include "alloc-util.h"
   9 #include "architecture.h"
  10 #include "build.h"
  11 #include "bus-common-errors.h"
  12 #include "dbus-execute.h"
  13 #include "dbus-job.h"
  14 #include "dbus-manager.h"
  15 #include "dbus-scope.h"
  16 #include "dbus-unit.h"
  17 #include "dbus.h"
  18 #include "env-util.h"
  19 #include "fd-util.h"
  20 #include "fileio.h"
  21 #include "format-util.h"
  22 #include "fs-util.h"
  23 #include "install.h"
  24 #include "log.h"
  25 #include "os-util.h"
  26 #include "parse-util.h"
  27 #include "path-util.h"
  28 #include "selinux-access.h"
  29 #include "stat-util.h"
  30 #include "string-util.h"
  31 #include "strv.h"
  32 #include "syslog-util.h"
  33 #include "user-util.h"
  34 #include "virt.h"
  35 #include "watchdog.h"
  36
  37 /* Require 16MiB free in /run/systemd for reloading/reexecing. After all we need to serialize our state there, and if
  38  * we can't we'll fail badly. */
  39 #define RELOAD_DISK_SPACE_MIN (UINT64_C(16) * UINT64_C(1024) * UINT64_C(1024))
  40
  41 static UnitFileFlags unit_file_bools_to_flags(bool runtime, bool force) {
  42         return (runtime ? UNIT_FILE_RUNTIME : 0) |
  43                (force   ? UNIT_FILE_FORCE   : 0);
  44 }
  45
  46 BUS_DEFINE_PROPERTY_GET_ENUM(bus_property_get_oom_policy, oom_policy, OOMPolicy);
  47
  48 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_version, "s", GIT_VERSION);
  49 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_features, "s", SYSTEMD_FEATURES);
  50 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_architecture, "s", architecture_to_string(uname_architecture()));
  51 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_log_target, "s", log_target_to_string(log_get_target()));
  52 static BUS_DEFINE_PROPERTY_GET2(property_get_system_state, "s", Manager, manager_state, manager_state_to_string);
  53 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_timer_slack_nsec, "t", (uint64_t) prctl(PR_GET_TIMERSLACK));
  54 static BUS_DEFINE_PROPERTY_GET_REF(property_get_hashmap_size, "u", Hashmap *, hashmap_size);
  55 static BUS_DEFINE_PROPERTY_GET_REF(property_get_set_size, "u", Set *, set_size);
  56 static BUS_DEFINE_PROPERTY_GET(property_get_default_timeout_abort_usec, "t", Manager, manager_default_timeout_abort_usec);
  57
  58 static int property_get_virtualization(
  59                 sd_bus *bus,
  60                 const char *path,
  61                 const char *interface,
  62                 const char *property,
  63                 sd_bus_message *reply,
  64                 void *userdata,
  65                 sd_bus_error *error) {
  66
  67         int v;
  68
  69         assert(bus);
  70         assert(reply);
  71
  72         v = detect_virtualization();
  73
  74         /* Make sure to return the empty string when we detect no virtualization, as that is the API.
  75          *
  76          * https://github.com/systemd/systemd/issues/1423
  77          */
  78
  79         return sd_bus_message_append(
  80                         reply, "s",
  81                         v == VIRTUALIZATION_NONE ? NULL : virtualization_to_string(v));
  82 }
  83
  84 static int property_get_tainted(
  85                 sd_bus *bus,
  86                 const char *path,
  87                 const char *interface,
  88                 const char *property,
  89                 sd_bus_message *reply,
  90                 void *userdata,
  91                 sd_bus_error *error) {
  92
  93         _cleanup_free_ char *s = NULL;
  94         Manager *m = userdata;
  95
  96         assert(bus);
  97         assert(reply);
  98         assert(m);
  99
 100         s = manager_taint_string(m);
 101         if (!s)
 102                 return log_oom();
 103
 104         return sd_bus_message_append(reply, "s", s);
 105 }
 106
 107 static int property_set_log_target(
 108                 sd_bus *bus,
 109                 const char *path,
 110                 const char *interface,
 111                 const char *property,
 112                 sd_bus_message *value,
 113                 void *userdata,
 114                 sd_bus_error *error) {
 115
 116         Manager *m = userdata;
 117         const char *t;
 118         int r;
 119
 120         assert(bus);
 121         assert(value);
 122
 123         r = sd_bus_message_read(value, "s", &t);
 124         if (r < 0)
 125                 return r;
 126
 127         if (isempty(t))
 128                 manager_restore_original_log_target(m);
 129         else {
 130                 LogTarget target;
 131
 132                 target = log_target_from_string(t);
 133                 if (target < 0)
 134                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid log target '%s'", t);
 135
 136                 manager_override_log_target(m, target);
 137         }
 138
 139         return 0;
 140 }
 141
 142 static int property_get_log_level(
 143                 sd_bus *bus,
 144                 const char *path,
 145                 const char *interface,
 146                 const char *property,
 147                 sd_bus_message *reply,
 148                 void *userdata,
 149                 sd_bus_error *error) {
 150
 151         _cleanup_free_ char *t = NULL;
 152         int r;
 153
 154         assert(bus);
 155         assert(reply);
 156
 157         r = log_level_to_string_alloc(log_get_max_level(), &t);
 158         if (r < 0)
 159                 return r;
 160
 161         return sd_bus_message_append(reply, "s", t);
 162 }
 163
 164 static int property_set_log_level(
 165                 sd_bus *bus,
 166                 const char *path,
 167                 const char *interface,
 168                 const char *property,
 169                 sd_bus_message *value,
 170                 void *userdata,
 171                 sd_bus_error *error) {
 172
 173         Manager *m = userdata;
 174         const char *t;
 175         int r;
 176
 177         assert(bus);
 178         assert(value);
 179
 180         r = sd_bus_message_read(value, "s", &t);
 181         if (r < 0)
 182                 return r;
 183
 184         if (isempty(t))
 185                 manager_restore_original_log_level(m);
 186         else {
 187                 int level;
 188
 189                 level = log_level_from_string(t);
 190                 if (level < 0)
 191                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid log level '%s'", t);
 192
 193                 manager_override_log_level(m, level);
 194         }
 195
 196         return 0;
 197 }
 198
 199 static int property_get_progress(
 200                 sd_bus *bus,
 201                 const char *path,
 202                 const char *interface,
 203                 const char *property,
 204                 sd_bus_message *reply,
 205                 void *userdata,
 206                 sd_bus_error *error) {
 207
 208         Manager *m = userdata;
 209         double d;
 210
 211         assert(bus);
 212         assert(reply);
 213         assert(m);
 214
 215         if (MANAGER_IS_FINISHED(m))
 216                 d = 1.0;
 217         else
 218                 d = 1.0 - ((double) hashmap_size(m->jobs) / (double) m->n_installed_jobs);
 219
 220         return sd_bus_message_append(reply, "d", d);
 221 }
 222
 223 static int property_get_environment(
 224                 sd_bus *bus,
 225                 const char *path,
 226                 const char *interface,
 227                 const char *property,
 228                 sd_bus_message *reply,
 229                 void *userdata,
 230                 sd_bus_error *error) {
 231
 232         _cleanup_strv_free_ char **l = NULL;
 233         Manager *m = userdata;
 234         int r;
 235
 236         assert(bus);
 237         assert(reply);
 238         assert(m);
 239
 240         r = manager_get_effective_environment(m, &l);
 241         if (r < 0)
 242                 return r;
 243
 244         return sd_bus_message_append_strv(reply, l);
 245 }
 246
 247 static int property_get_show_status(
 248                 sd_bus *bus,
 249                 const char *path,
 250                 const char *interface,
 251                 const char *property,
 252                 sd_bus_message *reply,
 253                 void *userdata,
 254                 sd_bus_error *error) {
 255
 256         Manager *m = userdata;
 257         int b;
 258
 259         assert(bus);
 260         assert(reply);
 261         assert(m);
 262
 263         b = IN_SET(m->show_status, SHOW_STATUS_TEMPORARY, SHOW_STATUS_YES);
 264         return sd_bus_message_append_basic(reply, 'b', &b);
 265 }
 266
 267 static int property_set_runtime_watchdog(
 268                 sd_bus *bus,
 269                 const char *path,
 270                 const char *interface,
 271                 const char *property,
 272                 sd_bus_message *value,
 273                 void *userdata,
 274                 sd_bus_error *error) {
 275
 276         usec_t *t = userdata;
 277         int r;
 278
 279         assert(bus);
 280         assert(value);
 281
 282         assert_cc(sizeof(usec_t) == sizeof(uint64_t));
 283
 284         r = sd_bus_message_read(value, "t", t);
 285         if (r < 0)
 286                 return r;
 287
 288         return watchdog_set_timeout(t);
 289 }
 290
 291 static int bus_get_unit_by_name(Manager *m, sd_bus_message *message, const char *name, Unit **ret_unit, sd_bus_error *error) {
 292         Unit *u;
 293         int r;
 294
 295         assert(m);
 296         assert(message);
 297         assert(ret_unit);
 298
 299         /* More or less a wrapper around manager_get_unit() that generates nice errors and has one trick up its sleeve:
 300          * if the name is specified empty we use the client's unit. */
 301
 302         if (isempty(name)) {
 303                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 304                 pid_t pid;
 305
 306                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 307                 if (r < 0)
 308                         return r;
 309
 310                 r = sd_bus_creds_get_pid(creds, &pid);
 311                 if (r < 0)
 312                         return r;
 313
 314                 u = manager_get_unit_by_pid(m, pid);
 315                 if (!u)
 316                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Client not member of any unit.");
 317         } else {
 318                 u = manager_get_unit(m, name);
 319                 if (!u)
 320                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s not loaded.", name);
 321         }
 322
 323         *ret_unit = u;
 324         return 0;
 325 }
 326
 327 static int bus_load_unit_by_name(Manager *m, sd_bus_message *message, const char *name, Unit **ret_unit, sd_bus_error *error) {
 328         assert(m);
 329         assert(message);
 330         assert(ret_unit);
 331
 332         /* Pretty much the same as bus_get_unit_by_name(), but we also load the unit if necessary. */
 333
 334         if (isempty(name))
 335                 return bus_get_unit_by_name(m, message, name, ret_unit, error);
 336
 337         return manager_load_unit(m, name, NULL, error, ret_unit);
 338 }
 339
 340 static int reply_unit_path(Unit *u, sd_bus_message *message, sd_bus_error *error) {
 341         _cleanup_free_ char *path = NULL;
 342         int r;
 343
 344         assert(u);
 345         assert(message);
 346
 347         r = mac_selinux_unit_access_check(u, message, "status", error);
 348         if (r < 0)
 349                 return r;
 350
 351         path = unit_dbus_path(u);
 352         if (!path)
 353                 return log_oom();
 354
 355         return sd_bus_reply_method_return(message, "o", path);
 356 }
 357
 358 static int method_get_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 359         Manager *m = userdata;
 360         const char *name;
 361         Unit *u;
 362         int r;
 363
 364         assert(message);
 365         assert(m);
 366
 367         /* Anyone can call this method */
 368
 369         r = sd_bus_message_read(message, "s", &name);
 370         if (r < 0)
 371                 return r;
 372
 373         r = bus_get_unit_by_name(m, message, name, &u, error);
 374         if (r < 0)
 375                 return r;
 376
 377         return reply_unit_path(u, message, error);
 378 }
 379
 380 static int method_get_unit_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 381         Manager *m = userdata;
 382         pid_t pid;
 383         Unit *u;
 384         int r;
 385
 386         assert(message);
 387         assert(m);
 388
 389         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 390
 391         /* Anyone can call this method */
 392
 393         r = sd_bus_message_read(message, "u", &pid);
 394         if (r < 0)
 395                 return r;
 396         if (pid < 0)
 397                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid PID " PID_FMT, pid);
 398
 399         if (pid == 0) {
 400                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 401
 402                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 403                 if (r < 0)
 404                         return r;
 405
 406                 r = sd_bus_creds_get_pid(creds, &pid);
 407                 if (r < 0)
 408                         return r;
 409         }
 410
 411         u = manager_get_unit_by_pid(m, pid);
 412         if (!u)
 413                 return sd_bus_error_setf(error, BUS_ERROR_NO_UNIT_FOR_PID, "PID "PID_FMT" does not belong to any loaded unit.", pid);
 414
 415         return reply_unit_path(u, message, error);
 416 }
 417
 418 static int method_get_unit_by_invocation_id(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 419         _cleanup_free_ char *path = NULL;
 420         Manager *m = userdata;
 421         sd_id128_t id;
 422         const void *a;
 423         Unit *u;
 424         size_t sz;
 425         int r;
 426
 427         assert(message);
 428         assert(m);
 429
 430         /* Anyone can call this method */
 431
 432         r = sd_bus_message_read_array(message, 'y', &a, &sz);
 433         if (r < 0)
 434                 return r;
 435         if (sz == 0)
 436                 id = SD_ID128_NULL;
 437         else if (sz == 16)
 438                 memcpy(&id, a, sz);
 439         else
 440                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid invocation ID");
 441
 442         if (sd_id128_is_null(id)) {
 443                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 444                 pid_t pid;
 445
 446                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 447                 if (r < 0)
 448                         return r;
 449
 450                 r = sd_bus_creds_get_pid(creds, &pid);
 451                 if (r < 0)
 452                         return r;
 453
 454                 u = manager_get_unit_by_pid(m, pid);
 455                 if (!u)
 456                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Client " PID_FMT " not member of any unit.", pid);
 457         } else {
 458                 u = hashmap_get(m->units_by_invocation_id, &id);
 459                 if (!u)
 460                         return sd_bus_error_setf(error, BUS_ERROR_NO_UNIT_FOR_INVOCATION_ID, "No unit with the specified invocation ID " SD_ID128_FORMAT_STR " known.", SD_ID128_FORMAT_VAL(id));
 461         }
 462
 463         r = mac_selinux_unit_access_check(u, message, "status", error);
 464         if (r < 0)
 465                 return r;
 466
 467         /* So here's a special trick: the bus path we return actually references the unit by its invocation ID instead
 468          * of the unit name. This means it stays valid only as long as the invocation ID stays the same. */
 469         path = unit_dbus_path_invocation_id(u);
 470         if (!path)
 471                 return -ENOMEM;
 472
 473         return sd_bus_reply_method_return(message, "o", path);
 474 }
 475
 476 static int method_get_unit_by_control_group(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 477         Manager *m = userdata;
 478         const char *cgroup;
 479         Unit *u;
 480         int r;
 481
 482         r = sd_bus_message_read(message, "s", &cgroup);
 483         if (r < 0)
 484                 return r;
 485
 486         u = manager_get_unit_by_cgroup(m, cgroup);
 487         if (!u)
 488                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Control group '%s' is not valid or not managed by this instance", cgroup);
 489
 490         return reply_unit_path(u, message, error);
 491 }
 492
 493 static int method_load_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 494         Manager *m = userdata;
 495         const char *name;
 496         Unit *u;
 497         int r;
 498
 499         assert(message);
 500         assert(m);
 501
 502         /* Anyone can call this method */
 503
 504         r = sd_bus_message_read(message, "s", &name);
 505         if (r < 0)
 506                 return r;
 507
 508         r = bus_load_unit_by_name(m, message, name, &u, error);
 509         if (r < 0)
 510                 return r;
 511
 512         return reply_unit_path(u, message, error);
 513 }
 514
 515 static int method_start_unit_generic(sd_bus_message *message, Manager *m, JobType job_type, bool reload_if_possible, sd_bus_error *error) {
 516         const char *name;
 517         Unit *u;
 518         int r;
 519
 520         assert(message);
 521         assert(m);
 522
 523         r = sd_bus_message_read(message, "s", &name);
 524         if (r < 0)
 525                 return r;
 526
 527         r = manager_load_unit(m, name, NULL, error, &u);
 528         if (r < 0)
 529                 return r;
 530
 531         return bus_unit_method_start_generic(message, u, job_type, reload_if_possible, error);
 532 }
 533
 534 static int method_start_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 535         return method_start_unit_generic(message, userdata, JOB_START, false, error);
 536 }
 537
 538 static int method_stop_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 539         return method_start_unit_generic(message, userdata, JOB_STOP, false, error);
 540 }
 541
 542 static int method_reload_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 543         return method_start_unit_generic(message, userdata, JOB_RELOAD, false, error);
 544 }
 545
 546 static int method_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 547         return method_start_unit_generic(message, userdata, JOB_RESTART, false, error);
 548 }
 549
 550 static int method_try_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 551         return method_start_unit_generic(message, userdata, JOB_TRY_RESTART, false, error);
 552 }
 553
 554 static int method_reload_or_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 555         return method_start_unit_generic(message, userdata, JOB_RESTART, true, error);
 556 }
 557
 558 static int method_reload_or_try_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 559         return method_start_unit_generic(message, userdata, JOB_TRY_RESTART, true, error);
 560 }
 561
 562 typedef enum GenericUnitOperationFlags {
 563         GENERIC_UNIT_LOAD            = 1 << 0, /* Load if the unit is not loaded yet */
 564         GENERIC_UNIT_VALIDATE_LOADED = 1 << 1, /* Verify unit is properly loaded before forwarding call */
 565 } GenericUnitOperationFlags;
 566
 567 static int method_generic_unit_operation(
 568                 sd_bus_message *message,
 569                 Manager *m,
 570                 sd_bus_error *error,
 571                 sd_bus_message_handler_t handler,
 572                 GenericUnitOperationFlags flags) {
 573
 574         const char *name;
 575         Unit *u;
 576         int r;
 577
 578         assert(message);
 579         assert(m);
 580
 581         /* Read the first argument from the command and pass the operation to the specified per-unit
 582          * method. */
 583
 584         r = sd_bus_message_read(message, "s", &name);
 585         if (r < 0)
 586                 return r;
 587
 588         if (!isempty(name) && FLAGS_SET(flags, GENERIC_UNIT_LOAD))
 589                 r = manager_load_unit(m, name, NULL, error, &u);
 590         else
 591                 r = bus_get_unit_by_name(m, message, name, &u, error);
 592         if (r < 0)
 593                 return r;
 594
 595         if (FLAGS_SET(flags, GENERIC_UNIT_VALIDATE_LOADED)) {
 596                 r = bus_unit_validate_load_state(u, error);
 597                 if (r < 0)
 598                         return r;
 599         }
 600
 601         return handler(message, u, error);
 602 }
 603
 604 static int method_enqueue_unit_job(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 605         /* We don't bother with GENERIC_UNIT_VALIDATE_LOADED here, as the job logic validates that anyway */
 606         return method_generic_unit_operation(message, userdata, error, bus_unit_method_enqueue_job, GENERIC_UNIT_LOAD);
 607 }
 608
 609 static int method_start_unit_replace(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 610         Manager *m = userdata;
 611         const char *old_name;
 612         Unit *u;
 613         int r;
 614
 615         assert(message);
 616         assert(m);
 617
 618         r = sd_bus_message_read(message, "s", &old_name);
 619         if (r < 0)
 620                 return r;
 621
 622         r = bus_get_unit_by_name(m, message, old_name, &u, error);
 623         if (r < 0)
 624                 return r;
 625         if (!u->job || u->job->type != JOB_START)
 626                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "No job queued for unit %s", old_name);
 627
 628         return method_start_unit_generic(message, m, JOB_START, false, error);
 629 }
 630
 631 static int method_kill_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 632         /* We don't bother with GENERIC_UNIT_LOAD nor GENERIC_UNIT_VALIDATE_LOADED here, as it shouldn't
 633          * matter whether a unit is loaded for killing any processes possibly in the unit's cgroup. */
 634         return method_generic_unit_operation(message, userdata, error, bus_unit_method_kill, 0);
 635 }
 636
 637 static int method_reset_failed_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 638         /* Don't load the unit (because unloaded units can't be in failed state), and don't insist on the
 639          * unit to be loaded properly (since a failed unit might have its unit file disappeared) */
 640         return method_generic_unit_operation(message, userdata, error, bus_unit_method_reset_failed, 0);
 641 }
 642
 643 static int method_set_unit_properties(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 644         /* Only change properties on fully loaded units, and load them in order to set properties */
 645         return method_generic_unit_operation(message, userdata, error, bus_unit_method_set_properties, GENERIC_UNIT_LOAD|GENERIC_UNIT_VALIDATE_LOADED);
 646 }
 647
 648 static int method_ref_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 649         /* Only allow reffing of fully loaded units, and make sure reffing a unit loads it. */
 650         return method_generic_unit_operation(message, userdata, error, bus_unit_method_ref, GENERIC_UNIT_LOAD|GENERIC_UNIT_VALIDATE_LOADED);
 651 }
 652
 653 static int method_unref_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 654         /* Dropping a ref OTOH should not require the unit to still be loaded. And since a reffed unit is a
 655          * loaded unit there's no need to load the unit for unreffing it. */
 656         return method_generic_unit_operation(message, userdata, error, bus_unit_method_unref, 0);
 657 }
 658
 659 static int reply_unit_info(sd_bus_message *reply, Unit *u) {
 660         _cleanup_free_ char *unit_path = NULL, *job_path = NULL;
 661         Unit *following;
 662
 663         following = unit_following(u);
 664
 665         unit_path = unit_dbus_path(u);
 666         if (!unit_path)
 667                 return -ENOMEM;
 668
 669         if (u->job) {
 670                 job_path = job_dbus_path(u->job);
 671                 if (!job_path)
 672                         return -ENOMEM;
 673         }
 674
 675         return sd_bus_message_append(
 676                         reply, "(ssssssouso)",
 677                         u->id,
 678                         unit_description(u),
 679                         unit_load_state_to_string(u->load_state),
 680                         unit_active_state_to_string(unit_active_state(u)),
 681                         unit_sub_state_to_string(u),
 682                         following ? following->id : "",
 683                         unit_path,
 684                         u->job ? u->job->id : 0,
 685                         u->job ? job_type_to_string(u->job->type) : "",
 686                         job_path ? job_path : "/");
 687 }
 688
 689 static int method_list_units_by_names(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 690         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 691         Manager *m = userdata;
 692         int r;
 693         char **unit;
 694         _cleanup_strv_free_ char **units = NULL;
 695
 696         assert(message);
 697         assert(m);
 698
 699         r = sd_bus_message_read_strv(message, &units);
 700         if (r < 0)
 701                 return r;
 702
 703         r = sd_bus_message_new_method_return(message, &reply);
 704         if (r < 0)
 705                 return r;
 706
 707         r = sd_bus_message_open_container(reply, 'a', "(ssssssouso)");
 708         if (r < 0)
 709                 return r;
 710
 711         STRV_FOREACH(unit, units) {
 712                 Unit *u;
 713
 714                 if (!unit_name_is_valid(*unit, UNIT_NAME_ANY))
 715                         continue;
 716
 717                 r = bus_load_unit_by_name(m, message, *unit, &u, error);
 718                 if (r < 0)
 719                         return r;
 720
 721                 r = reply_unit_info(reply, u);
 722                 if (r < 0)
 723                         return r;
 724         }
 725
 726         r = sd_bus_message_close_container(reply);
 727         if (r < 0)
 728                 return r;
 729
 730         return sd_bus_send(NULL, reply, NULL);
 731 }
 732
 733 static int method_get_unit_processes(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 734         /* Don't load a unit (since it won't have any processes if it's not loaded), but don't insist on the
 735          * unit being loaded (because even improperly loaded units might still have processes around */
 736         return method_generic_unit_operation(message, userdata, error, bus_unit_method_get_processes, 0);
 737 }
 738
 739 static int method_attach_processes_to_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 740         /* Don't allow attaching new processes to units that aren't loaded. Don't bother with loading a unit
 741          * for this purpose though, as an unloaded unit is a stopped unit, and we don't allow attaching
 742          * processes to stopped units anyway. */
 743         return method_generic_unit_operation(message, userdata, error, bus_unit_method_attach_processes, GENERIC_UNIT_VALIDATE_LOADED);
 744 }
 745
 746 static int transient_unit_from_message(
 747                 Manager *m,
 748                 sd_bus_message *message,
 749                 const char *name,
 750                 Unit **unit,
 751                 sd_bus_error *error) {
 752
 753         UnitType t;
 754         Unit *u;
 755         int r;
 756
 757         assert(m);
 758         assert(message);
 759         assert(name);
 760
 761         t = unit_name_to_type(name);
 762         if (t < 0)
 763                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid unit name or type.");
 764
 765         if (!unit_vtable[t]->can_transient)
 766                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unit type %s does not support transient units.", unit_type_to_string(t));
 767
 768         r = manager_load_unit(m, name, NULL, error, &u);
 769         if (r < 0)
 770                 return r;
 771
 772         if (!unit_is_pristine(u))
 773                 return sd_bus_error_setf(error, BUS_ERROR_UNIT_EXISTS, "Unit %s already exists.", name);
 774
 775         /* OK, the unit failed to load and is unreferenced, now let's
 776          * fill in the transient data instead */
 777         r = unit_make_transient(u);
 778         if (r < 0)
 779                 return r;
 780
 781         /* Set our properties */
 782         r = bus_unit_set_properties(u, message, UNIT_RUNTIME, false, error);
 783         if (r < 0)
 784                 return r;
 785
 786         /* If the client asked for it, automatically add a reference to this unit. */
 787         if (u->bus_track_add) {
 788                 r = bus_unit_track_add_sender(u, message);
 789                 if (r < 0)
 790                         return log_error_errno(r, "Failed to watch sender: %m");
 791         }
 792
 793         /* Now load the missing bits of the unit we just created */
 794         unit_add_to_load_queue(u);
 795         manager_dispatch_load_queue(m);
 796
 797         *unit = u;
 798
 799         return 0;
 800 }
 801
 802 static int transient_aux_units_from_message(
 803                 Manager *m,
 804                 sd_bus_message *message,
 805                 sd_bus_error *error) {
 806
 807         int r;
 808
 809         assert(m);
 810         assert(message);
 811
 812         r = sd_bus_message_enter_container(message, 'a', "(sa(sv))");
 813         if (r < 0)
 814                 return r;
 815
 816         while ((r = sd_bus_message_enter_container(message, 'r', "sa(sv)")) > 0) {
 817                 const char *name = NULL;
 818                 Unit *u;
 819
 820                 r = sd_bus_message_read(message, "s", &name);
 821                 if (r < 0)
 822                         return r;
 823
 824                 r = transient_unit_from_message(m, message, name, &u, error);
 825                 if (r < 0)
 826                         return r;
 827
 828                 r = sd_bus_message_exit_container(message);
 829                 if (r < 0)
 830                         return r;
 831         }
 832         if (r < 0)
 833                 return r;
 834
 835         r = sd_bus_message_exit_container(message);
 836         if (r < 0)
 837                 return r;
 838
 839         return 0;
 840 }
 841
 842 static int method_start_transient_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 843         const char *name, *smode;
 844         Manager *m = userdata;
 845         JobMode mode;
 846         Unit *u;
 847         int r;
 848
 849         assert(message);
 850         assert(m);
 851
 852         r = mac_selinux_access_check(message, "start", error);
 853         if (r < 0)
 854                 return r;
 855
 856         r = sd_bus_message_read(message, "ss", &name, &smode);
 857         if (r < 0)
 858                 return r;
 859
 860         mode = job_mode_from_string(smode);
 861         if (mode < 0)
 862                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Job mode %s is invalid.", smode);
 863
 864         r = bus_verify_manage_units_async(m, message, error);
 865         if (r < 0)
 866                 return r;
 867         if (r == 0)
 868                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
 869
 870         r = transient_unit_from_message(m, message, name, &u, error);
 871         if (r < 0)
 872                 return r;
 873
 874         r = transient_aux_units_from_message(m, message, error);
 875         if (r < 0)
 876                 return r;
 877
 878         /* Finally, start it */
 879         return bus_unit_queue_job(message, u, JOB_START, mode, 0, error);
 880 }
 881
 882 static int method_get_job(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 883         _cleanup_free_ char *path = NULL;
 884         Manager *m = userdata;
 885         uint32_t id;
 886         Job *j;
 887         int r;
 888
 889         assert(message);
 890         assert(m);
 891
 892         /* Anyone can call this method */
 893
 894         r = sd_bus_message_read(message, "u", &id);
 895         if (r < 0)
 896                 return r;
 897
 898         j = manager_get_job(m, id);
 899         if (!j)
 900                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
 901
 902         r = mac_selinux_unit_access_check(j->unit, message, "status", error);
 903         if (r < 0)
 904                 return r;
 905
 906         path = job_dbus_path(j);
 907         if (!path)
 908                 return -ENOMEM;
 909
 910         return sd_bus_reply_method_return(message, "o", path);
 911 }
 912
 913 static int method_cancel_job(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 914         Manager *m = userdata;
 915         uint32_t id;
 916         Job *j;
 917         int r;
 918
 919         assert(message);
 920         assert(m);
 921
 922         r = sd_bus_message_read(message, "u", &id);
 923         if (r < 0)
 924                 return r;
 925
 926         j = manager_get_job(m, id);
 927         if (!j)
 928                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
 929
 930         return bus_job_method_cancel(message, j, error);
 931 }
 932
 933 static int method_clear_jobs(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 934         Manager *m = userdata;
 935         int r;
 936
 937         assert(message);
 938         assert(m);
 939
 940         r = mac_selinux_access_check(message, "reload", error);
 941         if (r < 0)
 942                 return r;
 943
 944         r = bus_verify_manage_units_async(m, message, error);
 945         if (r < 0)
 946                 return r;
 947         if (r == 0)
 948                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
 949
 950         manager_clear_jobs(m);
 951
 952         return sd_bus_reply_method_return(message, NULL);
 953 }
 954
 955 static int method_reset_failed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 956         Manager *m = userdata;
 957         int r;
 958
 959         assert(message);
 960         assert(m);
 961
 962         r = mac_selinux_access_check(message, "reload", error);
 963         if (r < 0)
 964                 return r;
 965
 966         r = bus_verify_manage_units_async(m, message, error);
 967         if (r < 0)
 968                 return r;
 969         if (r == 0)
 970                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
 971
 972         manager_reset_failed(m);
 973
 974         return sd_bus_reply_method_return(message, NULL);
 975 }
 976
 977 static int list_units_filtered(sd_bus_message *message, void *userdata, sd_bus_error *error, char **states, char **patterns) {
 978         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 979         Manager *m = userdata;
 980         const char *k;
 981         Iterator i;
 982         Unit *u;
 983         int r;
 984
 985         assert(message);
 986         assert(m);
 987
 988         /* Anyone can call this method */
 989
 990         r = mac_selinux_access_check(message, "status", error);
 991         if (r < 0)
 992                 return r;
 993
 994         r = sd_bus_message_new_method_return(message, &reply);
 995         if (r < 0)
 996                 return r;
 997
 998         r = sd_bus_message_open_container(reply, 'a', "(ssssssouso)");
 999         if (r < 0)
1000                 return r;
1001
1002         HASHMAP_FOREACH_KEY(u, k, m->units, i) {
1003                 if (k != u->id)
1004                         continue;
1005
1006                 if (!strv_isempty(states) &&
1007                     !strv_contains(states, unit_load_state_to_string(u->load_state)) &&
1008                     !strv_contains(states, unit_active_state_to_string(unit_active_state(u))) &&
1009                     !strv_contains(states, unit_sub_state_to_string(u)))
1010                         continue;
1011
1012                 if (!strv_isempty(patterns) &&
1013                     !strv_fnmatch_or_empty(patterns, u->id, FNM_NOESCAPE))
1014                         continue;
1015
1016                 r = reply_unit_info(reply, u);
1017                 if (r < 0)
1018                         return r;
1019         }
1020
1021         r = sd_bus_message_close_container(reply);
1022         if (r < 0)
1023                 return r;
1024
1025         return sd_bus_send(NULL, reply, NULL);
1026 }
1027
1028 static int method_list_units(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1029         return list_units_filtered(message, userdata, error, NULL, NULL);
1030 }
1031
1032 static int method_list_units_filtered(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1033         _cleanup_strv_free_ char **states = NULL;
1034         int r;
1035
1036         r = sd_bus_message_read_strv(message, &states);
1037         if (r < 0)
1038                 return r;
1039
1040         return list_units_filtered(message, userdata, error, states, NULL);
1041 }
1042
1043 static int method_list_units_by_patterns(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1044         _cleanup_strv_free_ char **states = NULL;
1045         _cleanup_strv_free_ char **patterns = NULL;
1046         int r;
1047
1048         r = sd_bus_message_read_strv(message, &states);
1049         if (r < 0)
1050                 return r;
1051
1052         r = sd_bus_message_read_strv(message, &patterns);
1053         if (r < 0)
1054                 return r;
1055
1056         return list_units_filtered(message, userdata, error, states, patterns);
1057 }
1058
1059 static int method_list_jobs(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1060         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1061         Manager *m = userdata;
1062         Iterator i;
1063         Job *j;
1064         int r;
1065
1066         assert(message);
1067         assert(m);
1068
1069         /* Anyone can call this method */
1070
1071         r = mac_selinux_access_check(message, "status", error);
1072         if (r < 0)
1073                 return r;
1074
1075         r = sd_bus_message_new_method_return(message, &reply);
1076         if (r < 0)
1077                 return r;
1078
1079         r = sd_bus_message_open_container(reply, 'a', "(usssoo)");
1080         if (r < 0)
1081                 return r;
1082
1083         HASHMAP_FOREACH(j, m->jobs, i) {
1084                 _cleanup_free_ char *unit_path = NULL, *job_path = NULL;
1085
1086                 job_path = job_dbus_path(j);
1087                 if (!job_path)
1088                         return -ENOMEM;
1089
1090                 unit_path = unit_dbus_path(j->unit);
1091                 if (!unit_path)
1092                         return -ENOMEM;
1093
1094                 r = sd_bus_message_append(
1095                                 reply, "(usssoo)",
1096                                 j->id,
1097                                 j->unit->id,
1098                                 job_type_to_string(j->type),
1099                                 job_state_to_string(j->state),
1100                                 job_path,
1101                                 unit_path);
1102                 if (r < 0)
1103                         return r;
1104         }
1105
1106         r = sd_bus_message_close_container(reply);
1107         if (r < 0)
1108                 return r;
1109
1110         return sd_bus_send(NULL, reply, NULL);
1111 }
1112
1113 static int method_subscribe(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1114         Manager *m = userdata;
1115         int r;
1116
1117         assert(message);
1118         assert(m);
1119
1120         /* Anyone can call this method */
1121
1122         r = mac_selinux_access_check(message, "status", error);
1123         if (r < 0)
1124                 return r;
1125
1126         if (sd_bus_message_get_bus(message) == m->api_bus) {
1127
1128                 /* Note that direct bus connection subscribe by
1129                  * default, we only track peers on the API bus here */
1130
1131                 if (!m->subscribed) {
1132                         r = sd_bus_track_new(sd_bus_message_get_bus(message), &m->subscribed, NULL, NULL);
1133                         if (r < 0)
1134                                 return r;
1135                 }
1136
1137                 r = sd_bus_track_add_sender(m->subscribed, message);
1138                 if (r < 0)
1139                         return r;
1140                 if (r == 0)
1141                         return sd_bus_error_setf(error, BUS_ERROR_ALREADY_SUBSCRIBED, "Client is already subscribed.");
1142         }
1143
1144         return sd_bus_reply_method_return(message, NULL);
1145 }
1146
1147 static int method_unsubscribe(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1148         Manager *m = userdata;
1149         int r;
1150
1151         assert(message);
1152         assert(m);
1153
1154         /* Anyone can call this method */
1155
1156         r = mac_selinux_access_check(message, "status", error);
1157         if (r < 0)
1158                 return r;
1159
1160         if (sd_bus_message_get_bus(message) == m->api_bus) {
1161                 r = sd_bus_track_remove_sender(m->subscribed, message);
1162                 if (r < 0)
1163                         return r;
1164                 if (r == 0)
1165                         return sd_bus_error_setf(error, BUS_ERROR_NOT_SUBSCRIBED, "Client is not subscribed.");
1166         }
1167
1168         return sd_bus_reply_method_return(message, NULL);
1169 }
1170
1171 static int dump_impl(sd_bus_message *message, void *userdata, sd_bus_error *error, int (*reply)(sd_bus_message *, char *)) {
1172         _cleanup_free_ char *dump = NULL;
1173         Manager *m = userdata;
1174         int r;
1175
1176         assert(message);
1177         assert(m);
1178
1179         /* Anyone can call this method */
1180
1181         r = mac_selinux_access_check(message, "status", error);
1182         if (r < 0)
1183                 return r;
1184
1185         r = manager_get_dump_string(m, &dump);
1186         if (r < 0)
1187                 return r;
1188
1189         return reply(message, dump);
1190 }
1191
1192 static int reply_dump(sd_bus_message *message, char *dump) {
1193         return sd_bus_reply_method_return(message, "s", dump);
1194 }
1195
1196 static int method_dump(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1197         return dump_impl(message, userdata, error, reply_dump);
1198 }
1199
1200 static int reply_dump_by_fd(sd_bus_message *message, char *dump) {
1201         _cleanup_close_ int fd = -1;
1202
1203         fd = acquire_data_fd(dump, strlen(dump), 0);
1204         if (fd < 0)
1205                 return fd;
1206
1207         return sd_bus_reply_method_return(message, "h", fd);
1208 }
1209
1210 static int method_dump_by_fd(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1211         return dump_impl(message, userdata, error, reply_dump_by_fd);
1212 }
1213
1214 static int method_refuse_snapshot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1215         return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Support for snapshots has been removed.");
1216 }
1217
1218 static int verify_run_space(const char *message, sd_bus_error *error) {
1219         struct statvfs svfs;
1220         uint64_t available;
1221
1222         if (statvfs("/run/systemd", &svfs) < 0)
1223                 return sd_bus_error_set_errnof(error, errno, "Failed to statvfs(/run/systemd): %m");
1224
1225         available = (uint64_t) svfs.f_bfree * (uint64_t) svfs.f_bsize;
1226
1227         if (available < RELOAD_DISK_SPACE_MIN) {
1228                 char fb_available[FORMAT_BYTES_MAX], fb_need[FORMAT_BYTES_MAX];
1229                 return sd_bus_error_setf(error,
1230                                          BUS_ERROR_DISK_FULL,
1231                                          "%s, not enough space available on /run/systemd. "
1232                                          "Currently, %s are free, but a safety buffer of %s is enforced.",
1233                                          message,
1234                                          format_bytes(fb_available, sizeof(fb_available), available),
1235                                          format_bytes(fb_need, sizeof(fb_need), RELOAD_DISK_SPACE_MIN));
1236         }
1237
1238         return 0;
1239 }
1240
1241 int verify_run_space_and_log(const char *message) {
1242         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1243         int r;
1244
1245         r = verify_run_space(message, &error);
1246         if (r < 0)
1247                 return log_error_errno(r, "%s", bus_error_message(&error, r));
1248
1249         return 0;
1250 }
1251
1252 static int method_reload(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1253         Manager *m = userdata;
1254         int r;
1255
1256         assert(message);
1257         assert(m);
1258
1259         r = verify_run_space("Refusing to reload", error);
1260         if (r < 0)
1261                 return r;
1262
1263         r = mac_selinux_access_check(message, "reload", error);
1264         if (r < 0)
1265                 return r;
1266
1267         r = bus_verify_reload_daemon_async(m, message, error);
1268         if (r < 0)
1269                 return r;
1270         if (r == 0)
1271                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1272
1273         /* Instead of sending the reply back right away, we just
1274          * remember that we need to and then send it after the reload
1275          * is finished. That way the caller knows when the reload
1276          * finished. */
1277
1278         assert(!m->pending_reload_message);
1279         r = sd_bus_message_new_method_return(message, &m->pending_reload_message);
1280         if (r < 0)
1281                 return r;
1282
1283         m->objective = MANAGER_RELOAD;
1284
1285         return 1;
1286 }
1287
1288 static int method_reexecute(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1289         Manager *m = userdata;
1290         int r;
1291
1292         assert(message);
1293         assert(m);
1294
1295         r = verify_run_space("Refusing to reexecute", error);
1296         if (r < 0)
1297                 return r;
1298
1299         r = mac_selinux_access_check(message, "reload", error);
1300         if (r < 0)
1301                 return r;
1302
1303         r = bus_verify_reload_daemon_async(m, message, error);
1304         if (r < 0)
1305                 return r;
1306         if (r == 0)
1307                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1308
1309         /* We don't send a reply back here, the client should
1310          * just wait for us disconnecting. */
1311
1312         m->objective = MANAGER_REEXECUTE;
1313         return 1;
1314 }
1315
1316 static int method_exit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1317         Manager *m = userdata;
1318         int r;
1319
1320         assert(message);
1321         assert(m);
1322
1323         r = mac_selinux_access_check(message, "halt", error);
1324         if (r < 0)
1325                 return r;
1326
1327         /* Exit() (in contrast to SetExitCode()) is actually allowed even if
1328          * we are running on the host. It will fall back on reboot() in
1329          * systemd-shutdown if it cannot do the exit() because it isn't a
1330          * container. */
1331
1332         m->objective = MANAGER_EXIT;
1333
1334         return sd_bus_reply_method_return(message, NULL);
1335 }
1336
1337 static int method_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1338         Manager *m = userdata;
1339         int r;
1340
1341         assert(message);
1342         assert(m);
1343
1344         r = mac_selinux_access_check(message, "reboot", error);
1345         if (r < 0)
1346                 return r;
1347
1348         if (!MANAGER_IS_SYSTEM(m))
1349                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Reboot is only supported for system managers.");
1350
1351         m->objective = MANAGER_REBOOT;
1352
1353         return sd_bus_reply_method_return(message, NULL);
1354 }
1355
1356 static int method_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1357         Manager *m = userdata;
1358         int r;
1359
1360         assert(message);
1361         assert(m);
1362
1363         r = mac_selinux_access_check(message, "halt", error);
1364         if (r < 0)
1365                 return r;
1366
1367         if (!MANAGER_IS_SYSTEM(m))
1368                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Powering off is only supported for system managers.");
1369
1370         m->objective = MANAGER_POWEROFF;
1371
1372         return sd_bus_reply_method_return(message, NULL);
1373 }
1374
1375 static int method_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1376         Manager *m = userdata;
1377         int r;
1378
1379         assert(message);
1380         assert(m);
1381
1382         r = mac_selinux_access_check(message, "halt", error);
1383         if (r < 0)
1384                 return r;
1385
1386         if (!MANAGER_IS_SYSTEM(m))
1387                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Halt is only supported for system managers.");
1388
1389         m->objective = MANAGER_HALT;
1390
1391         return sd_bus_reply_method_return(message, NULL);
1392 }
1393
1394 static int method_kexec(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1395         Manager *m = userdata;
1396         int r;
1397
1398         assert(message);
1399         assert(m);
1400
1401         r = mac_selinux_access_check(message, "reboot", error);
1402         if (r < 0)
1403                 return r;
1404
1405         if (!MANAGER_IS_SYSTEM(m))
1406                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "KExec is only supported for system managers.");
1407
1408         m->objective = MANAGER_KEXEC;
1409
1410         return sd_bus_reply_method_return(message, NULL);
1411 }
1412
1413 static int method_switch_root(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1414         _cleanup_free_ char *ri = NULL, *rt = NULL;
1415         const char *root, *init;
1416         Manager *m = userdata;
1417         struct statvfs svfs;
1418         uint64_t available;
1419         int r;
1420
1421         assert(message);
1422         assert(m);
1423
1424         if (statvfs("/run/systemd", &svfs) < 0)
1425                 return sd_bus_error_set_errnof(error, errno, "Failed to statvfs(/run/systemd): %m");
1426
1427         available = (uint64_t) svfs.f_bfree * (uint64_t) svfs.f_bsize;
1428
1429         if (available < RELOAD_DISK_SPACE_MIN) {
1430                 char fb_available[FORMAT_BYTES_MAX], fb_need[FORMAT_BYTES_MAX];
1431                 log_warning("Dangerously low amount of free space on /run/systemd, root switching operation might not complete successfully. "
1432                             "Currently, %s are free, but %s are suggested. Proceeding anyway.",
1433                             format_bytes(fb_available, sizeof(fb_available), available),
1434                             format_bytes(fb_need, sizeof(fb_need), RELOAD_DISK_SPACE_MIN));
1435         }
1436
1437         r = mac_selinux_access_check(message, "reboot", error);
1438         if (r < 0)
1439                 return r;
1440
1441         if (!MANAGER_IS_SYSTEM(m))
1442                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Root switching is only supported by system manager.");
1443
1444         r = sd_bus_message_read(message, "ss", &root, &init);
1445         if (r < 0)
1446                 return r;
1447
1448         if (isempty(root))
1449                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "New root directory may not be the empty string.");
1450         if (!path_is_absolute(root))
1451                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "New root path '%s' is not absolute.", root);
1452         if (path_equal(root, "/"))
1453                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "New root directory cannot be the old root directory.");
1454
1455         /* Safety check */
1456         if (isempty(init)) {
1457                 r = path_is_os_tree(root);
1458                 if (r < 0)
1459                         return sd_bus_error_set_errnof(error, r, "Failed to determine whether root path '%s' contains an OS tree: %m", root);
1460                 if (r == 0)
1461                         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);
1462         } else {
1463                 _cleanup_free_ char *chased = NULL;
1464
1465                 if (!path_is_absolute(init))
1466                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path to init binary '%s' not absolute.", init);
1467
1468                 r = chase_symlinks(init, root, CHASE_PREFIX_ROOT|CHASE_TRAIL_SLASH, &chased);
1469                 if (r < 0)
1470                         return sd_bus_error_set_errnof(error, r, "Could not resolve init executable %s: %m", init);
1471
1472                 if (laccess(chased, X_OK) < 0) {
1473                         if (errno == EACCES)
1474                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Init binary %s is not executable.", init);
1475
1476                         return sd_bus_error_set_errnof(error, r, "Could not check whether init binary %s is executable: %m", init);
1477                 }
1478         }
1479
1480         rt = strdup(root);
1481         if (!rt)
1482                 return -ENOMEM;
1483
1484         if (!isempty(init)) {
1485                 ri = strdup(init);
1486                 if (!ri)
1487                         return -ENOMEM;
1488         }
1489
1490         free_and_replace(m->switch_root, rt);
1491         free_and_replace(m->switch_root_init, ri);
1492
1493         m->objective = MANAGER_SWITCH_ROOT;
1494
1495         return sd_bus_reply_method_return(message, NULL);
1496 }
1497
1498 static int method_set_environment(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1499         _cleanup_strv_free_ char **plus = NULL;
1500         Manager *m = userdata;
1501         int r;
1502
1503         assert(message);
1504         assert(m);
1505
1506         r = mac_selinux_access_check(message, "reload", error);
1507         if (r < 0)
1508                 return r;
1509
1510         r = sd_bus_message_read_strv(message, &plus);
1511         if (r < 0)
1512                 return r;
1513         if (!strv_env_is_valid(plus))
1514                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment assignments");
1515
1516         r = bus_verify_set_environment_async(m, message, error);
1517         if (r < 0)
1518                 return r;
1519         if (r == 0)
1520                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1521
1522         r = manager_client_environment_modify(m, NULL, plus);
1523         if (r < 0)
1524                 return r;
1525
1526         return sd_bus_reply_method_return(message, NULL);
1527 }
1528
1529 static int method_unset_environment(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1530         _cleanup_strv_free_ char **minus = NULL;
1531         Manager *m = userdata;
1532         int r;
1533
1534         assert(message);
1535         assert(m);
1536
1537         r = mac_selinux_access_check(message, "reload", error);
1538         if (r < 0)
1539                 return r;
1540
1541         r = sd_bus_message_read_strv(message, &minus);
1542         if (r < 0)
1543                 return r;
1544
1545         if (!strv_env_name_or_assignment_is_valid(minus))
1546                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment variable names or assignments");
1547
1548         r = bus_verify_set_environment_async(m, message, error);
1549         if (r < 0)
1550                 return r;
1551         if (r == 0)
1552                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1553
1554         r = manager_client_environment_modify(m, minus, NULL);
1555         if (r < 0)
1556                 return r;
1557
1558         return sd_bus_reply_method_return(message, NULL);
1559 }
1560
1561 static int method_unset_and_set_environment(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1562         _cleanup_strv_free_ char **minus = NULL, **plus = NULL;
1563         Manager *m = userdata;
1564         int r;
1565
1566         assert(message);
1567         assert(m);
1568
1569         r = mac_selinux_access_check(message, "reload", error);
1570         if (r < 0)
1571                 return r;
1572
1573         r = sd_bus_message_read_strv(message, &minus);
1574         if (r < 0)
1575                 return r;
1576
1577         r = sd_bus_message_read_strv(message, &plus);
1578         if (r < 0)
1579                 return r;
1580
1581         if (!strv_env_name_or_assignment_is_valid(minus))
1582                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment variable names or assignments");
1583         if (!strv_env_is_valid(plus))
1584                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment assignments");
1585
1586         r = bus_verify_set_environment_async(m, message, error);
1587         if (r < 0)
1588                 return r;
1589         if (r == 0)
1590                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1591
1592         r = manager_client_environment_modify(m, minus, plus);
1593         if (r < 0)
1594                 return r;
1595
1596         return sd_bus_reply_method_return(message, NULL);
1597 }
1598
1599 static int method_set_exit_code(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1600         Manager *m = userdata;
1601         uint8_t code;
1602         int r;
1603
1604         assert(message);
1605         assert(m);
1606
1607         r = mac_selinux_access_check(message, "exit", error);
1608         if (r < 0)
1609                 return r;
1610
1611         r = sd_bus_message_read_basic(message, 'y', &code);
1612         if (r < 0)
1613                 return r;
1614
1615         if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0)
1616                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "ExitCode can only be set for user service managers or in containers.");
1617
1618         m->return_value = code;
1619
1620         return sd_bus_reply_method_return(message, NULL);
1621 }
1622
1623 static int method_lookup_dynamic_user_by_name(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1624         Manager *m = userdata;
1625         const char *name;
1626         uid_t uid;
1627         int r;
1628
1629         assert(message);
1630         assert(m);
1631
1632         r = sd_bus_message_read_basic(message, 's', &name);
1633         if (r < 0)
1634                 return r;
1635
1636         if (!MANAGER_IS_SYSTEM(m))
1637                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Dynamic users are only supported in the system instance.");
1638         if (!valid_user_group_name(name))
1639                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "User name invalid: %s", name);
1640
1641         r = dynamic_user_lookup_name(m, name, &uid);
1642         if (r == -ESRCH)
1643                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_DYNAMIC_USER, "Dynamic user %s does not exist.", name);
1644         if (r < 0)
1645                 return r;
1646
1647         return sd_bus_reply_method_return(message, "u", (uint32_t) uid);
1648 }
1649
1650 static int method_lookup_dynamic_user_by_uid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1651         _cleanup_free_ char *name = NULL;
1652         Manager *m = userdata;
1653         uid_t uid;
1654         int r;
1655
1656         assert(message);
1657         assert(m);
1658
1659         assert_cc(sizeof(uid) == sizeof(uint32_t));
1660         r = sd_bus_message_read_basic(message, 'u', &uid);
1661         if (r < 0)
1662                 return r;
1663
1664         if (!MANAGER_IS_SYSTEM(m))
1665                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Dynamic users are only supported in the system instance.");
1666         if (!uid_is_valid(uid))
1667                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "User ID invalid: " UID_FMT, uid);
1668
1669         r = dynamic_user_lookup_uid(m, uid, &name);
1670         if (r == -ESRCH)
1671                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_DYNAMIC_USER, "Dynamic user ID " UID_FMT " does not exist.", uid);
1672         if (r < 0)
1673                 return r;
1674
1675         return sd_bus_reply_method_return(message, "s", name);
1676 }
1677
1678 static int method_get_dynamic_users(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1679         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1680         Manager *m = userdata;
1681         DynamicUser *d;
1682         Iterator i;
1683         int r;
1684
1685         assert(message);
1686         assert(m);
1687
1688         assert_cc(sizeof(uid_t) == sizeof(uint32_t));
1689
1690         if (!MANAGER_IS_SYSTEM(m))
1691                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Dynamic users are only supported in the system instance.");
1692
1693         r = sd_bus_message_new_method_return(message, &reply);
1694         if (r < 0)
1695                 return r;
1696
1697         r = sd_bus_message_open_container(reply, 'a', "(us)");
1698         if (r < 0)
1699                 return r;
1700
1701         HASHMAP_FOREACH(d, m->dynamic_users, i) {
1702                 uid_t uid;
1703
1704                 r = dynamic_user_current(d, &uid);
1705                 if (r == -EAGAIN) /* not realized yet? */
1706                         continue;
1707                 if (r < 0)
1708                         return sd_bus_error_setf(error, SD_BUS_ERROR_FAILED, "Failed to lookup a dynamic user.");
1709
1710                 r = sd_bus_message_append(reply, "(us)", uid, d->name);
1711                 if (r < 0)
1712                         return r;
1713         }
1714
1715         r = sd_bus_message_close_container(reply);
1716         if (r < 0)
1717                 return r;
1718
1719         return sd_bus_send(NULL, reply, NULL);
1720 }
1721
1722 static int list_unit_files_by_patterns(sd_bus_message *message, void *userdata, sd_bus_error *error, char **states, char **patterns) {
1723         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1724         Manager *m = userdata;
1725         UnitFileList *item;
1726         Hashmap *h;
1727         Iterator i;
1728         int r;
1729
1730         assert(message);
1731         assert(m);
1732
1733         /* Anyone can call this method */
1734
1735         r = mac_selinux_access_check(message, "status", error);
1736         if (r < 0)
1737                 return r;
1738
1739         r = sd_bus_message_new_method_return(message, &reply);
1740         if (r < 0)
1741                 return r;
1742
1743         h = hashmap_new(&string_hash_ops);
1744         if (!h)
1745                 return -ENOMEM;
1746
1747         r = unit_file_get_list(m->unit_file_scope, NULL, h, states, patterns);
1748         if (r < 0)
1749                 goto fail;
1750
1751         r = sd_bus_message_open_container(reply, 'a', "(ss)");
1752         if (r < 0)
1753                 goto fail;
1754
1755         HASHMAP_FOREACH(item, h, i) {
1756
1757                 r = sd_bus_message_append(reply, "(ss)", item->path, unit_file_state_to_string(item->state));
1758                 if (r < 0)
1759                         goto fail;
1760         }
1761
1762         unit_file_list_free(h);
1763
1764         r = sd_bus_message_close_container(reply);
1765         if (r < 0)
1766                 return r;
1767
1768         return sd_bus_send(NULL, reply, NULL);
1769
1770 fail:
1771         unit_file_list_free(h);
1772         return r;
1773 }
1774
1775 static int method_list_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1776         return list_unit_files_by_patterns(message, userdata, error, NULL, NULL);
1777 }
1778
1779 static int method_list_unit_files_by_patterns(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1780         _cleanup_strv_free_ char **states = NULL;
1781         _cleanup_strv_free_ char **patterns = NULL;
1782         int r;
1783
1784         r = sd_bus_message_read_strv(message, &states);
1785         if (r < 0)
1786                 return r;
1787
1788         r = sd_bus_message_read_strv(message, &patterns);
1789         if (r < 0)
1790                 return r;
1791
1792         return list_unit_files_by_patterns(message, userdata, error, states, patterns);
1793 }
1794
1795 static int method_get_unit_file_state(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1796         Manager *m = userdata;
1797         const char *name;
1798         UnitFileState state;
1799         int r;
1800
1801         assert(message);
1802         assert(m);
1803
1804         /* Anyone can call this method */
1805
1806         r = mac_selinux_access_check(message, "status", error);
1807         if (r < 0)
1808                 return r;
1809
1810         r = sd_bus_message_read(message, "s", &name);
1811         if (r < 0)
1812                 return r;
1813
1814         r = unit_file_get_state(m->unit_file_scope, NULL, name, &state);
1815         if (r < 0)
1816                 return r;
1817
1818         return sd_bus_reply_method_return(message, "s", unit_file_state_to_string(state));
1819 }
1820
1821 static int method_get_default_target(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1822         _cleanup_free_ char *default_target = NULL;
1823         Manager *m = userdata;
1824         int r;
1825
1826         assert(message);
1827         assert(m);
1828
1829         /* Anyone can call this method */
1830
1831         r = mac_selinux_access_check(message, "status", error);
1832         if (r < 0)
1833                 return r;
1834
1835         r = unit_file_get_default(m->unit_file_scope, NULL, &default_target);
1836         if (r < 0)
1837                 return r;
1838
1839         return sd_bus_reply_method_return(message, "s", default_target);
1840 }
1841
1842 static int send_unit_files_changed(sd_bus *bus, void *userdata) {
1843         _cleanup_(sd_bus_message_unrefp) sd_bus_message *message = NULL;
1844         int r;
1845
1846         assert(bus);
1847
1848         r = sd_bus_message_new_signal(bus, &message, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "UnitFilesChanged");
1849         if (r < 0)
1850                 return r;
1851
1852         return sd_bus_send(bus, message, NULL);
1853 }
1854
1855 /* Create an error reply, using the error information from changes[]
1856  * if possible, and fall back to generating an error from error code c.
1857  * The error message only describes the first error.
1858  *
1859  * Coordinate with unit_file_dump_changes() in install.c.
1860  */
1861 static int install_error(
1862                 sd_bus_error *error,
1863                 int c,
1864                 UnitFileChange *changes,
1865                 size_t n_changes) {
1866
1867         size_t i;
1868         int r;
1869
1870         for (i = 0; i < n_changes; i++)
1871
1872                 switch(changes[i].type) {
1873
1874                 case 0 ... INT_MAX:
1875                         continue;
1876
1877                 case -EEXIST:
1878                         if (changes[i].source)
1879                                 r = sd_bus_error_setf(error, BUS_ERROR_UNIT_EXISTS,
1880                                                       "File %s already exists and is a symlink to %s.",
1881                                                       changes[i].path, changes[i].source);
1882                         else
1883                                 r = sd_bus_error_setf(error, BUS_ERROR_UNIT_EXISTS,
1884                                                       "File %s already exists.",
1885                                                       changes[i].path);
1886                         goto found;
1887
1888                 case -ERFKILL:
1889                         r = sd_bus_error_setf(error, BUS_ERROR_UNIT_MASKED,
1890                                               "Unit file %s is masked.", changes[i].path);
1891                         goto found;
1892
1893                 case -EADDRNOTAVAIL:
1894                         r = sd_bus_error_setf(error, BUS_ERROR_UNIT_GENERATED,
1895                                               "Unit %s is transient or generated.", changes[i].path);
1896                         goto found;
1897
1898                 case -ELOOP:
1899                         r = sd_bus_error_setf(error, BUS_ERROR_UNIT_LINKED,
1900                                               "Refusing to operate on linked unit file %s", changes[i].path);
1901                         goto found;
1902
1903                 case -ENOENT:
1904                         r = sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit file %s does not exist.", changes[i].path);
1905                         goto found;
1906
1907                 default:
1908                         r = sd_bus_error_set_errnof(error, changes[i].type, "File %s: %m", changes[i].path);
1909                         goto found;
1910                 }
1911
1912         r = c < 0 ? c : -EINVAL;
1913
1914  found:
1915         unit_file_changes_free(changes, n_changes);
1916         return r;
1917 }
1918
1919 static int reply_unit_file_changes_and_free(
1920                 Manager *m,
1921                 sd_bus_message *message,
1922                 int carries_install_info,
1923                 UnitFileChange *changes,
1924                 size_t n_changes,
1925                 sd_bus_error *error) {
1926
1927         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1928         bool bad = false, good = false;
1929         size_t i;
1930         int r;
1931
1932         if (unit_file_changes_have_modification(changes, n_changes)) {
1933                 r = bus_foreach_bus(m, NULL, send_unit_files_changed, NULL);
1934                 if (r < 0)
1935                         log_debug_errno(r, "Failed to send UnitFilesChanged signal: %m");
1936         }
1937
1938         r = sd_bus_message_new_method_return(message, &reply);
1939         if (r < 0)
1940                 goto fail;
1941
1942         if (carries_install_info >= 0) {
1943                 r = sd_bus_message_append(reply, "b", carries_install_info);
1944                 if (r < 0)
1945                         goto fail;
1946         }
1947
1948         r = sd_bus_message_open_container(reply, 'a', "(sss)");
1949         if (r < 0)
1950                 goto fail;
1951
1952         for (i = 0; i < n_changes; i++) {
1953
1954                 if (changes[i].type < 0) {
1955                         bad = true;
1956                         continue;
1957                 }
1958
1959                 r = sd_bus_message_append(
1960                                 reply, "(sss)",
1961                                 unit_file_change_type_to_string(changes[i].type),
1962                                 changes[i].path,
1963                                 changes[i].source);
1964                 if (r < 0)
1965                         goto fail;
1966
1967                 good = true;
1968         }
1969
1970         /* If there was a failed change, and no successful change, then return the first failure as proper method call
1971          * error. */
1972         if (bad && !good)
1973                 return install_error(error, 0, changes, n_changes);
1974
1975         r = sd_bus_message_close_container(reply);
1976         if (r < 0)
1977                 goto fail;
1978
1979         unit_file_changes_free(changes, n_changes);
1980         return sd_bus_send(NULL, reply, NULL);
1981
1982 fail:
1983         unit_file_changes_free(changes, n_changes);
1984         return r;
1985 }
1986
1987 static int method_enable_unit_files_generic(
1988                 sd_bus_message *message,
1989                 Manager *m,
1990                 int (*call)(UnitFileScope scope, UnitFileFlags flags, const char *root_dir, char *files[], UnitFileChange **changes, size_t *n_changes),
1991                 bool carries_install_info,
1992                 sd_bus_error *error) {
1993
1994         _cleanup_strv_free_ char **l = NULL;
1995         UnitFileChange *changes = NULL;
1996         size_t n_changes = 0;
1997         UnitFileFlags flags;
1998         int runtime, force, r;
1999
2000         assert(message);
2001         assert(m);
2002
2003         r = sd_bus_message_read_strv(message, &l);
2004         if (r < 0)
2005                 return r;
2006
2007         r = sd_bus_message_read(message, "bb", &runtime, &force);
2008         if (r < 0)
2009                 return r;
2010
2011         flags = unit_file_bools_to_flags(runtime, force);
2012
2013         r = bus_verify_manage_unit_files_async(m, message, error);
2014         if (r < 0)
2015                 return r;
2016         if (r == 0)
2017                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2018
2019         r = call(m->unit_file_scope, flags, NULL, l, &changes, &n_changes);
2020         if (r < 0)
2021                 return install_error(error, r, changes, n_changes);
2022
2023         return reply_unit_file_changes_and_free(m, message, carries_install_info ? r : -1, changes, n_changes, error);
2024 }
2025
2026 static int method_enable_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2027         return method_enable_unit_files_generic(message, userdata, unit_file_enable, true, error);
2028 }
2029
2030 static int method_reenable_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2031         return method_enable_unit_files_generic(message, userdata, unit_file_reenable, true, error);
2032 }
2033
2034 static int method_link_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2035         return method_enable_unit_files_generic(message, userdata, unit_file_link, false, error);
2036 }
2037
2038 static int unit_file_preset_without_mode(UnitFileScope scope, UnitFileFlags flags, const char *root_dir, char **files, UnitFileChange **changes, size_t *n_changes) {
2039         return unit_file_preset(scope, flags, root_dir, files, UNIT_FILE_PRESET_FULL, changes, n_changes);
2040 }
2041
2042 static int method_preset_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2043         return method_enable_unit_files_generic(message, userdata, unit_file_preset_without_mode, true, error);
2044 }
2045
2046 static int method_mask_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2047         return method_enable_unit_files_generic(message, userdata, unit_file_mask, false, error);
2048 }
2049
2050 static int method_preset_unit_files_with_mode(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2051
2052         _cleanup_strv_free_ char **l = NULL;
2053         UnitFileChange *changes = NULL;
2054         size_t n_changes = 0;
2055         Manager *m = userdata;
2056         UnitFilePresetMode mm;
2057         int runtime, force, r;
2058         UnitFileFlags flags;
2059         const char *mode;
2060
2061         assert(message);
2062         assert(m);
2063
2064         r = sd_bus_message_read_strv(message, &l);
2065         if (r < 0)
2066                 return r;
2067
2068         r = sd_bus_message_read(message, "sbb", &mode, &runtime, &force);
2069         if (r < 0)
2070                 return r;
2071
2072         flags = unit_file_bools_to_flags(runtime, force);
2073
2074         if (isempty(mode))
2075                 mm = UNIT_FILE_PRESET_FULL;
2076         else {
2077                 mm = unit_file_preset_mode_from_string(mode);
2078                 if (mm < 0)
2079                         return -EINVAL;
2080         }
2081
2082         r = bus_verify_manage_unit_files_async(m, message, error);
2083         if (r < 0)
2084                 return r;
2085         if (r == 0)
2086                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2087
2088         r = unit_file_preset(m->unit_file_scope, flags, NULL, l, mm, &changes, &n_changes);
2089         if (r < 0)
2090                 return install_error(error, r, changes, n_changes);
2091
2092         return reply_unit_file_changes_and_free(m, message, r, changes, n_changes, error);
2093 }
2094
2095 static int method_disable_unit_files_generic(
2096                 sd_bus_message *message,
2097                 Manager *m,
2098                 int (*call)(UnitFileScope scope, UnitFileFlags flags, const char *root_dir, char *files[], UnitFileChange **changes, size_t *n_changes),
2099                 sd_bus_error *error) {
2100
2101         _cleanup_strv_free_ char **l = NULL;
2102         UnitFileChange *changes = NULL;
2103         size_t n_changes = 0;
2104         int r, runtime;
2105
2106         assert(message);
2107         assert(m);
2108
2109         r = sd_bus_message_read_strv(message, &l);
2110         if (r < 0)
2111                 return r;
2112
2113         r = sd_bus_message_read(message, "b", &runtime);
2114         if (r < 0)
2115                 return r;
2116
2117         r = bus_verify_manage_unit_files_async(m, message, error);
2118         if (r < 0)
2119                 return r;
2120         if (r == 0)
2121                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2122
2123         r = call(m->unit_file_scope, runtime ? UNIT_FILE_RUNTIME : 0, NULL, l, &changes, &n_changes);
2124         if (r < 0)
2125                 return install_error(error, r, changes, n_changes);
2126
2127         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2128 }
2129
2130 static int method_disable_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2131         return method_disable_unit_files_generic(message, userdata, unit_file_disable, error);
2132 }
2133
2134 static int method_unmask_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2135         return method_disable_unit_files_generic(message, userdata, unit_file_unmask, error);
2136 }
2137
2138 static int method_revert_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2139         _cleanup_strv_free_ char **l = NULL;
2140         UnitFileChange *changes = NULL;
2141         size_t n_changes = 0;
2142         Manager *m = userdata;
2143         int r;
2144
2145         assert(message);
2146         assert(m);
2147
2148         r = sd_bus_message_read_strv(message, &l);
2149         if (r < 0)
2150                 return r;
2151
2152         r = bus_verify_manage_unit_files_async(m, message, error);
2153         if (r < 0)
2154                 return r;
2155         if (r == 0)
2156                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2157
2158         r = unit_file_revert(m->unit_file_scope, NULL, l, &changes, &n_changes);
2159         if (r < 0)
2160                 return install_error(error, r, changes, n_changes);
2161
2162         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2163 }
2164
2165 static int method_set_default_target(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2166         UnitFileChange *changes = NULL;
2167         size_t n_changes = 0;
2168         Manager *m = userdata;
2169         const char *name;
2170         int force, r;
2171
2172         assert(message);
2173         assert(m);
2174
2175         r = mac_selinux_access_check(message, "enable", error);
2176         if (r < 0)
2177                 return r;
2178
2179         r = sd_bus_message_read(message, "sb", &name, &force);
2180         if (r < 0)
2181                 return r;
2182
2183         r = bus_verify_manage_unit_files_async(m, message, error);
2184         if (r < 0)
2185                 return r;
2186         if (r == 0)
2187                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2188
2189         r = unit_file_set_default(m->unit_file_scope, force ? UNIT_FILE_FORCE : 0, NULL, name, &changes, &n_changes);
2190         if (r < 0)
2191                 return install_error(error, r, changes, n_changes);
2192
2193         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2194 }
2195
2196 static int method_preset_all_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2197         UnitFileChange *changes = NULL;
2198         size_t n_changes = 0;
2199         Manager *m = userdata;
2200         UnitFilePresetMode mm;
2201         const char *mode;
2202         UnitFileFlags flags;
2203         int force, runtime, r;
2204
2205         assert(message);
2206         assert(m);
2207
2208         r = mac_selinux_access_check(message, "enable", error);
2209         if (r < 0)
2210                 return r;
2211
2212         r = sd_bus_message_read(message, "sbb", &mode, &runtime, &force);
2213         if (r < 0)
2214                 return r;
2215
2216         flags = unit_file_bools_to_flags(runtime, force);
2217
2218         if (isempty(mode))
2219                 mm = UNIT_FILE_PRESET_FULL;
2220         else {
2221                 mm = unit_file_preset_mode_from_string(mode);
2222                 if (mm < 0)
2223                         return -EINVAL;
2224         }
2225
2226         r = bus_verify_manage_unit_files_async(m, message, error);
2227         if (r < 0)
2228                 return r;
2229         if (r == 0)
2230                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2231
2232         r = unit_file_preset_all(m->unit_file_scope, flags, NULL, mm, &changes, &n_changes);
2233         if (r < 0)
2234                 return install_error(error, r, changes, n_changes);
2235
2236         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2237 }
2238
2239 static int method_add_dependency_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2240         _cleanup_strv_free_ char **l = NULL;
2241         Manager *m = userdata;
2242         UnitFileChange *changes = NULL;
2243         size_t n_changes = 0;
2244         int runtime, force, r;
2245         char *target, *type;
2246         UnitDependency dep;
2247         UnitFileFlags flags;
2248
2249         assert(message);
2250         assert(m);
2251
2252         r = bus_verify_manage_unit_files_async(m, message, error);
2253         if (r < 0)
2254                 return r;
2255         if (r == 0)
2256                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2257
2258         r = sd_bus_message_read_strv(message, &l);
2259         if (r < 0)
2260                 return r;
2261
2262         r = sd_bus_message_read(message, "ssbb", &target, &type, &runtime, &force);
2263         if (r < 0)
2264                 return r;
2265
2266         flags = unit_file_bools_to_flags(runtime, force);
2267
2268         dep = unit_dependency_from_string(type);
2269         if (dep < 0)
2270                 return -EINVAL;
2271
2272         r = unit_file_add_dependency(m->unit_file_scope, flags, NULL, l, target, dep, &changes, &n_changes);
2273         if (r < 0)
2274                 return install_error(error, r, changes, n_changes);
2275
2276         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2277 }
2278
2279 static int method_get_unit_file_links(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2280         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
2281         UnitFileChange *changes = NULL;
2282         size_t n_changes = 0, i;
2283         UnitFileFlags flags;
2284         const char *name;
2285         char **p;
2286         int runtime, r;
2287
2288         r = sd_bus_message_read(message, "sb", &name, &runtime);
2289         if (r < 0)
2290                 return r;
2291
2292         r = sd_bus_message_new_method_return(message, &reply);
2293         if (r < 0)
2294                 return r;
2295
2296         r = sd_bus_message_open_container(reply, SD_BUS_TYPE_ARRAY, "s");
2297         if (r < 0)
2298                 return r;
2299
2300         p = STRV_MAKE(name);
2301         flags = UNIT_FILE_DRY_RUN |
2302                 (runtime ? UNIT_FILE_RUNTIME : 0);
2303
2304         r = unit_file_disable(UNIT_FILE_SYSTEM, flags, NULL, p, &changes, &n_changes);
2305         if (r < 0)
2306                 return log_error_errno(r, "Failed to get file links for %s: %m", name);
2307
2308         for (i = 0; i < n_changes; i++)
2309                 if (changes[i].type == UNIT_FILE_UNLINK) {
2310                         r = sd_bus_message_append(reply, "s", changes[i].path);
2311                         if (r < 0)
2312                                 return r;
2313                 }
2314
2315         r = sd_bus_message_close_container(reply);
2316         if (r < 0)
2317                 return r;
2318
2319         return sd_bus_send(NULL, reply, NULL);
2320 }
2321
2322 static int method_get_job_waiting(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2323         Manager *m = userdata;
2324         uint32_t id;
2325         Job *j;
2326         int r;
2327
2328         assert(message);
2329         assert(m);
2330
2331         r = sd_bus_message_read(message, "u", &id);
2332         if (r < 0)
2333                 return r;
2334
2335         j = manager_get_job(m, id);
2336         if (!j)
2337                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
2338
2339         return bus_job_method_get_waiting_jobs(message, j, error);
2340 }
2341
2342 static int method_abandon_scope(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2343         Manager *m = userdata;
2344         const char *name;
2345         Unit *u;
2346         int r;
2347
2348         assert(message);
2349         assert(m);
2350
2351         r = sd_bus_message_read(message, "s", &name);
2352         if (r < 0)
2353                 return r;
2354
2355         r = bus_get_unit_by_name(m, message, name, &u, error);
2356         if (r < 0)
2357                 return r;
2358
2359         if (u->type != UNIT_SCOPE)
2360                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unit '%s' is not a scope unit, refusing.", name);
2361
2362         return bus_scope_method_abandon(message, u, error);
2363 }
2364
2365 const sd_bus_vtable bus_manager_vtable[] = {
2366         SD_BUS_VTABLE_START(0),
2367
2368         SD_BUS_PROPERTY("Version", "s", property_get_version, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2369         SD_BUS_PROPERTY("Features", "s", property_get_features, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2370         SD_BUS_PROPERTY("Virtualization", "s", property_get_virtualization, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2371         SD_BUS_PROPERTY("Architecture", "s", property_get_architecture, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2372         SD_BUS_PROPERTY("Tainted", "s", property_get_tainted, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2373         BUS_PROPERTY_DUAL_TIMESTAMP("FirmwareTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_FIRMWARE]), SD_BUS_VTABLE_PROPERTY_CONST),
2374         BUS_PROPERTY_DUAL_TIMESTAMP("LoaderTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_LOADER]), SD_BUS_VTABLE_PROPERTY_CONST),
2375         BUS_PROPERTY_DUAL_TIMESTAMP("KernelTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_KERNEL]), SD_BUS_VTABLE_PROPERTY_CONST),
2376         BUS_PROPERTY_DUAL_TIMESTAMP("InitRDTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_INITRD]), SD_BUS_VTABLE_PROPERTY_CONST),
2377         BUS_PROPERTY_DUAL_TIMESTAMP("UserspaceTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_USERSPACE]), SD_BUS_VTABLE_PROPERTY_CONST),
2378         BUS_PROPERTY_DUAL_TIMESTAMP("FinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2379         BUS_PROPERTY_DUAL_TIMESTAMP("SecurityStartTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_SECURITY_START]), SD_BUS_VTABLE_PROPERTY_CONST),
2380         BUS_PROPERTY_DUAL_TIMESTAMP("SecurityFinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_SECURITY_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2381         BUS_PROPERTY_DUAL_TIMESTAMP("GeneratorsStartTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_GENERATORS_START]), SD_BUS_VTABLE_PROPERTY_CONST),
2382         BUS_PROPERTY_DUAL_TIMESTAMP("GeneratorsFinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_GENERATORS_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2383         BUS_PROPERTY_DUAL_TIMESTAMP("UnitsLoadStartTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_UNITS_LOAD_START]), SD_BUS_VTABLE_PROPERTY_CONST),
2384         BUS_PROPERTY_DUAL_TIMESTAMP("UnitsLoadFinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_UNITS_LOAD_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2385         BUS_PROPERTY_DUAL_TIMESTAMP("InitRDSecurityStartTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_INITRD_SECURITY_START]), SD_BUS_VTABLE_PROPERTY_CONST),
2386         BUS_PROPERTY_DUAL_TIMESTAMP("InitRDSecurityFinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_INITRD_SECURITY_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2387         BUS_PROPERTY_DUAL_TIMESTAMP("InitRDGeneratorsStartTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_INITRD_GENERATORS_START]), SD_BUS_VTABLE_PROPERTY_CONST),
2388         BUS_PROPERTY_DUAL_TIMESTAMP("InitRDGeneratorsFinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_INITRD_GENERATORS_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2389         BUS_PROPERTY_DUAL_TIMESTAMP("InitRDUnitsLoadStartTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_INITRD_UNITS_LOAD_START]), SD_BUS_VTABLE_PROPERTY_CONST),
2390         BUS_PROPERTY_DUAL_TIMESTAMP("InitRDUnitsLoadFinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_INITRD_UNITS_LOAD_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2391         SD_BUS_WRITABLE_PROPERTY("LogLevel", "s", property_get_log_level, property_set_log_level, 0, 0),
2392         SD_BUS_WRITABLE_PROPERTY("LogTarget", "s", property_get_log_target, property_set_log_target, 0, 0),
2393         SD_BUS_PROPERTY("NNames", "u", property_get_hashmap_size, offsetof(Manager, units), 0),
2394         SD_BUS_PROPERTY("NFailedUnits", "u", property_get_set_size, offsetof(Manager, failed_units), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
2395         SD_BUS_PROPERTY("NJobs", "u", property_get_hashmap_size, offsetof(Manager, jobs), 0),
2396         SD_BUS_PROPERTY("NInstalledJobs", "u", bus_property_get_unsigned, offsetof(Manager, n_installed_jobs), 0),
2397         SD_BUS_PROPERTY("NFailedJobs", "u", bus_property_get_unsigned, offsetof(Manager, n_failed_jobs), 0),
2398         SD_BUS_PROPERTY("Progress", "d", property_get_progress, 0, 0),
2399         SD_BUS_PROPERTY("Environment", "as", property_get_environment, 0, 0),
2400         SD_BUS_PROPERTY("ConfirmSpawn", "b", bus_property_get_bool, offsetof(Manager, confirm_spawn), SD_BUS_VTABLE_PROPERTY_CONST),
2401         SD_BUS_PROPERTY("ShowStatus", "b", property_get_show_status, 0, 0),
2402         SD_BUS_PROPERTY("UnitPath", "as", NULL, offsetof(Manager, lookup_paths.search_path), SD_BUS_VTABLE_PROPERTY_CONST),
2403         SD_BUS_PROPERTY("DefaultStandardOutput", "s", bus_property_get_exec_output, offsetof(Manager, default_std_output), SD_BUS_VTABLE_PROPERTY_CONST),
2404         SD_BUS_PROPERTY("DefaultStandardError", "s", bus_property_get_exec_output, offsetof(Manager, default_std_output), SD_BUS_VTABLE_PROPERTY_CONST),
2405         SD_BUS_WRITABLE_PROPERTY("RuntimeWatchdogUSec", "t", bus_property_get_usec, property_set_runtime_watchdog, offsetof(Manager, runtime_watchdog), 0),
2406         SD_BUS_WRITABLE_PROPERTY("ShutdownWatchdogUSec", "t", bus_property_get_usec, bus_property_set_usec, offsetof(Manager, shutdown_watchdog), 0),
2407         SD_BUS_WRITABLE_PROPERTY("ServiceWatchdogs", "b", bus_property_get_bool, bus_property_set_bool, offsetof(Manager, service_watchdogs), 0),
2408         SD_BUS_PROPERTY("ControlGroup", "s", NULL, offsetof(Manager, cgroup_root), 0),
2409         SD_BUS_PROPERTY("SystemState", "s", property_get_system_state, 0, 0),
2410         SD_BUS_PROPERTY("ExitCode", "y", bus_property_get_unsigned, offsetof(Manager, return_value), 0),
2411         SD_BUS_PROPERTY("DefaultTimerAccuracyUSec", "t", bus_property_get_usec, offsetof(Manager, default_timer_accuracy_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2412         SD_BUS_PROPERTY("DefaultTimeoutStartUSec", "t", bus_property_get_usec, offsetof(Manager, default_timeout_start_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2413         SD_BUS_PROPERTY("DefaultTimeoutStopUSec", "t", bus_property_get_usec, offsetof(Manager, default_timeout_stop_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2414         SD_BUS_PROPERTY("DefaultTimeoutAbortUSec", "t", property_get_default_timeout_abort_usec, 0, 0),
2415         SD_BUS_PROPERTY("DefaultRestartUSec", "t", bus_property_get_usec, offsetof(Manager, default_restart_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2416         SD_BUS_PROPERTY("DefaultStartLimitIntervalUSec", "t", bus_property_get_usec, offsetof(Manager, default_start_limit_interval), SD_BUS_VTABLE_PROPERTY_CONST),
2417         /* The following two items are obsolete alias */
2418         SD_BUS_PROPERTY("DefaultStartLimitIntervalSec", "t", bus_property_get_usec, offsetof(Manager, default_start_limit_interval), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
2419         SD_BUS_PROPERTY("DefaultStartLimitInterval", "t", bus_property_get_usec, offsetof(Manager, default_start_limit_interval), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
2420         SD_BUS_PROPERTY("DefaultStartLimitBurst", "u", bus_property_get_unsigned, offsetof(Manager, default_start_limit_burst), SD_BUS_VTABLE_PROPERTY_CONST),
2421         SD_BUS_PROPERTY("DefaultCPUAccounting", "b", bus_property_get_bool, offsetof(Manager, default_cpu_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
2422         SD_BUS_PROPERTY("DefaultBlockIOAccounting", "b", bus_property_get_bool, offsetof(Manager, default_blockio_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
2423         SD_BUS_PROPERTY("DefaultMemoryAccounting", "b", bus_property_get_bool, offsetof(Manager, default_memory_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
2424         SD_BUS_PROPERTY("DefaultTasksAccounting", "b", bus_property_get_bool, offsetof(Manager, default_tasks_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
2425         SD_BUS_PROPERTY("DefaultLimitCPU", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CPU]), SD_BUS_VTABLE_PROPERTY_CONST),
2426         SD_BUS_PROPERTY("DefaultLimitCPUSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CPU]), SD_BUS_VTABLE_PROPERTY_CONST),
2427         SD_BUS_PROPERTY("DefaultLimitFSIZE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_FSIZE]), SD_BUS_VTABLE_PROPERTY_CONST),
2428         SD_BUS_PROPERTY("DefaultLimitFSIZESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_FSIZE]), SD_BUS_VTABLE_PROPERTY_CONST),
2429         SD_BUS_PROPERTY("DefaultLimitDATA", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_DATA]), SD_BUS_VTABLE_PROPERTY_CONST),
2430         SD_BUS_PROPERTY("DefaultLimitDATASoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_DATA]), SD_BUS_VTABLE_PROPERTY_CONST),
2431         SD_BUS_PROPERTY("DefaultLimitSTACK", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_STACK]), SD_BUS_VTABLE_PROPERTY_CONST),
2432         SD_BUS_PROPERTY("DefaultLimitSTACKSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_STACK]), SD_BUS_VTABLE_PROPERTY_CONST),
2433         SD_BUS_PROPERTY("DefaultLimitCORE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CORE]), SD_BUS_VTABLE_PROPERTY_CONST),
2434         SD_BUS_PROPERTY("DefaultLimitCORESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CORE]), SD_BUS_VTABLE_PROPERTY_CONST),
2435         SD_BUS_PROPERTY("DefaultLimitRSS", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RSS]), SD_BUS_VTABLE_PROPERTY_CONST),
2436         SD_BUS_PROPERTY("DefaultLimitRSSSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RSS]), SD_BUS_VTABLE_PROPERTY_CONST),
2437         SD_BUS_PROPERTY("DefaultLimitNOFILE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NOFILE]), SD_BUS_VTABLE_PROPERTY_CONST),
2438         SD_BUS_PROPERTY("DefaultLimitNOFILESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NOFILE]), SD_BUS_VTABLE_PROPERTY_CONST),
2439         SD_BUS_PROPERTY("DefaultLimitAS", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_AS]), SD_BUS_VTABLE_PROPERTY_CONST),
2440         SD_BUS_PROPERTY("DefaultLimitASSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_AS]), SD_BUS_VTABLE_PROPERTY_CONST),
2441         SD_BUS_PROPERTY("DefaultLimitNPROC", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NPROC]), SD_BUS_VTABLE_PROPERTY_CONST),
2442         SD_BUS_PROPERTY("DefaultLimitNPROCSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NPROC]), SD_BUS_VTABLE_PROPERTY_CONST),
2443         SD_BUS_PROPERTY("DefaultLimitMEMLOCK", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MEMLOCK]), SD_BUS_VTABLE_PROPERTY_CONST),
2444         SD_BUS_PROPERTY("DefaultLimitMEMLOCKSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MEMLOCK]), SD_BUS_VTABLE_PROPERTY_CONST),
2445         SD_BUS_PROPERTY("DefaultLimitLOCKS", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_LOCKS]), SD_BUS_VTABLE_PROPERTY_CONST),
2446         SD_BUS_PROPERTY("DefaultLimitLOCKSSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_LOCKS]), SD_BUS_VTABLE_PROPERTY_CONST),
2447         SD_BUS_PROPERTY("DefaultLimitSIGPENDING", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_SIGPENDING]), SD_BUS_VTABLE_PROPERTY_CONST),
2448         SD_BUS_PROPERTY("DefaultLimitSIGPENDINGSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_SIGPENDING]), SD_BUS_VTABLE_PROPERTY_CONST),
2449         SD_BUS_PROPERTY("DefaultLimitMSGQUEUE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MSGQUEUE]), SD_BUS_VTABLE_PROPERTY_CONST),
2450         SD_BUS_PROPERTY("DefaultLimitMSGQUEUESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MSGQUEUE]), SD_BUS_VTABLE_PROPERTY_CONST),
2451         SD_BUS_PROPERTY("DefaultLimitNICE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NICE]), SD_BUS_VTABLE_PROPERTY_CONST),
2452         SD_BUS_PROPERTY("DefaultLimitNICESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NICE]), SD_BUS_VTABLE_PROPERTY_CONST),
2453         SD_BUS_PROPERTY("DefaultLimitRTPRIO", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTPRIO]), SD_BUS_VTABLE_PROPERTY_CONST),
2454         SD_BUS_PROPERTY("DefaultLimitRTPRIOSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTPRIO]), SD_BUS_VTABLE_PROPERTY_CONST),
2455         SD_BUS_PROPERTY("DefaultLimitRTTIME", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTTIME]), SD_BUS_VTABLE_PROPERTY_CONST),
2456         SD_BUS_PROPERTY("DefaultLimitRTTIMESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTTIME]), SD_BUS_VTABLE_PROPERTY_CONST),
2457         SD_BUS_PROPERTY("DefaultTasksMax", "t", NULL, offsetof(Manager, default_tasks_max), SD_BUS_VTABLE_PROPERTY_CONST),
2458         SD_BUS_PROPERTY("TimerSlackNSec", "t", property_get_timer_slack_nsec, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2459         SD_BUS_PROPERTY("DefaultOOMPolicy", "s", bus_property_get_oom_policy, offsetof(Manager, default_oom_policy), SD_BUS_VTABLE_PROPERTY_CONST),
2460
2461         SD_BUS_METHOD("GetUnit", "s", "o", method_get_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2462         SD_BUS_METHOD("GetUnitByPID", "u", "o", method_get_unit_by_pid, SD_BUS_VTABLE_UNPRIVILEGED),
2463         SD_BUS_METHOD("GetUnitByInvocationID", "ay", "o", method_get_unit_by_invocation_id, SD_BUS_VTABLE_UNPRIVILEGED),
2464         SD_BUS_METHOD("GetUnitByControlGroup", "s", "o", method_get_unit_by_control_group, SD_BUS_VTABLE_UNPRIVILEGED),
2465         SD_BUS_METHOD("LoadUnit", "s", "o", method_load_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2466         SD_BUS_METHOD("StartUnit", "ss", "o", method_start_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2467         SD_BUS_METHOD("StartUnitReplace", "sss", "o", method_start_unit_replace, SD_BUS_VTABLE_UNPRIVILEGED),
2468         SD_BUS_METHOD("StopUnit", "ss", "o", method_stop_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2469         SD_BUS_METHOD("ReloadUnit", "ss", "o", method_reload_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2470         SD_BUS_METHOD("RestartUnit", "ss", "o", method_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2471         SD_BUS_METHOD("TryRestartUnit", "ss", "o", method_try_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2472         SD_BUS_METHOD("ReloadOrRestartUnit", "ss", "o", method_reload_or_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2473         SD_BUS_METHOD("ReloadOrTryRestartUnit", "ss", "o", method_reload_or_try_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2474         SD_BUS_METHOD("EnqueueUnitJob", "sss", "uososa(uosos)", method_enqueue_unit_job, SD_BUS_VTABLE_UNPRIVILEGED),
2475         SD_BUS_METHOD("KillUnit", "ssi", NULL, method_kill_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2476         SD_BUS_METHOD("ResetFailedUnit", "s", NULL, method_reset_failed_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2477         SD_BUS_METHOD("SetUnitProperties", "sba(sv)", NULL, method_set_unit_properties, SD_BUS_VTABLE_UNPRIVILEGED),
2478         SD_BUS_METHOD("RefUnit", "s", NULL, method_ref_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2479         SD_BUS_METHOD("UnrefUnit", "s", NULL, method_unref_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2480         SD_BUS_METHOD("StartTransientUnit", "ssa(sv)a(sa(sv))", "o", method_start_transient_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2481         SD_BUS_METHOD("GetUnitProcesses", "s", "a(sus)", method_get_unit_processes, SD_BUS_VTABLE_UNPRIVILEGED),
2482         SD_BUS_METHOD("AttachProcessesToUnit", "ssau", NULL, method_attach_processes_to_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2483         SD_BUS_METHOD("AbandonScope", "s", NULL, method_abandon_scope, SD_BUS_VTABLE_UNPRIVILEGED),
2484         SD_BUS_METHOD("GetJob", "u", "o", method_get_job, SD_BUS_VTABLE_UNPRIVILEGED),
2485         SD_BUS_METHOD("GetJobAfter", "u", "a(usssoo)", method_get_job_waiting, SD_BUS_VTABLE_UNPRIVILEGED),
2486         SD_BUS_METHOD("GetJobBefore", "u", "a(usssoo)", method_get_job_waiting, SD_BUS_VTABLE_UNPRIVILEGED),
2487         SD_BUS_METHOD("CancelJob", "u", NULL, method_cancel_job, SD_BUS_VTABLE_UNPRIVILEGED),
2488         SD_BUS_METHOD("ClearJobs", NULL, NULL, method_clear_jobs, SD_BUS_VTABLE_UNPRIVILEGED),
2489         SD_BUS_METHOD("ResetFailed", NULL, NULL, method_reset_failed, SD_BUS_VTABLE_UNPRIVILEGED),
2490         SD_BUS_METHOD("ListUnits", NULL, "a(ssssssouso)", method_list_units, SD_BUS_VTABLE_UNPRIVILEGED),
2491         SD_BUS_METHOD("ListUnitsFiltered", "as", "a(ssssssouso)", method_list_units_filtered, SD_BUS_VTABLE_UNPRIVILEGED),
2492         SD_BUS_METHOD("ListUnitsByPatterns", "asas", "a(ssssssouso)", method_list_units_by_patterns, SD_BUS_VTABLE_UNPRIVILEGED),
2493         SD_BUS_METHOD("ListUnitsByNames", "as", "a(ssssssouso)", method_list_units_by_names, SD_BUS_VTABLE_UNPRIVILEGED),
2494         SD_BUS_METHOD("ListJobs", NULL, "a(usssoo)", method_list_jobs, SD_BUS_VTABLE_UNPRIVILEGED),
2495         SD_BUS_METHOD("Subscribe", NULL, NULL, method_subscribe, SD_BUS_VTABLE_UNPRIVILEGED),
2496         SD_BUS_METHOD("Unsubscribe", NULL, NULL, method_unsubscribe, SD_BUS_VTABLE_UNPRIVILEGED),
2497         SD_BUS_METHOD("Dump", NULL, "s", method_dump, SD_BUS_VTABLE_UNPRIVILEGED),
2498         SD_BUS_METHOD("DumpByFileDescriptor", NULL, "h", method_dump_by_fd, SD_BUS_VTABLE_UNPRIVILEGED),
2499         SD_BUS_METHOD("CreateSnapshot", "sb", "o", method_refuse_snapshot, SD_BUS_VTABLE_UNPRIVILEGED|SD_BUS_VTABLE_HIDDEN),
2500         SD_BUS_METHOD("RemoveSnapshot", "s", NULL, method_refuse_snapshot, SD_BUS_VTABLE_UNPRIVILEGED|SD_BUS_VTABLE_HIDDEN),
2501         SD_BUS_METHOD("Reload", NULL, NULL, method_reload, SD_BUS_VTABLE_UNPRIVILEGED),
2502         SD_BUS_METHOD("Reexecute", NULL, NULL, method_reexecute, SD_BUS_VTABLE_UNPRIVILEGED),
2503         SD_BUS_METHOD("Exit", NULL, NULL, method_exit, 0),
2504         SD_BUS_METHOD("Reboot", NULL, NULL, method_reboot, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2505         SD_BUS_METHOD("PowerOff", NULL, NULL, method_poweroff, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2506         SD_BUS_METHOD("Halt", NULL, NULL, method_halt, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2507         SD_BUS_METHOD("KExec", NULL, NULL, method_kexec, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2508         SD_BUS_METHOD("SwitchRoot", "ss", NULL, method_switch_root, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2509         SD_BUS_METHOD("SetEnvironment", "as", NULL, method_set_environment, SD_BUS_VTABLE_UNPRIVILEGED),
2510         SD_BUS_METHOD("UnsetEnvironment", "as", NULL, method_unset_environment, SD_BUS_VTABLE_UNPRIVILEGED),
2511         SD_BUS_METHOD("UnsetAndSetEnvironment", "asas", NULL, method_unset_and_set_environment, SD_BUS_VTABLE_UNPRIVILEGED),
2512         SD_BUS_METHOD("ListUnitFiles", NULL, "a(ss)", method_list_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2513         SD_BUS_METHOD("ListUnitFilesByPatterns", "asas", "a(ss)", method_list_unit_files_by_patterns, SD_BUS_VTABLE_UNPRIVILEGED),
2514         SD_BUS_METHOD("GetUnitFileState", "s", "s", method_get_unit_file_state, SD_BUS_VTABLE_UNPRIVILEGED),
2515         SD_BUS_METHOD("EnableUnitFiles", "asbb", "ba(sss)", method_enable_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2516         SD_BUS_METHOD("DisableUnitFiles", "asb", "a(sss)", method_disable_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2517         SD_BUS_METHOD("ReenableUnitFiles", "asbb", "ba(sss)", method_reenable_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2518         SD_BUS_METHOD("LinkUnitFiles", "asbb", "a(sss)", method_link_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2519         SD_BUS_METHOD("PresetUnitFiles", "asbb", "ba(sss)", method_preset_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2520         SD_BUS_METHOD("PresetUnitFilesWithMode", "assbb", "ba(sss)", method_preset_unit_files_with_mode, SD_BUS_VTABLE_UNPRIVILEGED),
2521         SD_BUS_METHOD("MaskUnitFiles", "asbb", "a(sss)", method_mask_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2522         SD_BUS_METHOD("UnmaskUnitFiles", "asb", "a(sss)", method_unmask_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2523         SD_BUS_METHOD("RevertUnitFiles", "as", "a(sss)", method_revert_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2524         SD_BUS_METHOD("SetDefaultTarget", "sb", "a(sss)", method_set_default_target, SD_BUS_VTABLE_UNPRIVILEGED),
2525         SD_BUS_METHOD("GetDefaultTarget", NULL, "s", method_get_default_target, SD_BUS_VTABLE_UNPRIVILEGED),
2526         SD_BUS_METHOD("PresetAllUnitFiles", "sbb", "a(sss)", method_preset_all_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2527         SD_BUS_METHOD("AddDependencyUnitFiles", "asssbb", "a(sss)", method_add_dependency_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2528         SD_BUS_METHOD("GetUnitFileLinks", "sb", "as", method_get_unit_file_links, SD_BUS_VTABLE_UNPRIVILEGED),
2529         SD_BUS_METHOD("SetExitCode", "y", NULL, method_set_exit_code, SD_BUS_VTABLE_UNPRIVILEGED),
2530         SD_BUS_METHOD("LookupDynamicUserByName", "s", "u", method_lookup_dynamic_user_by_name, SD_BUS_VTABLE_UNPRIVILEGED),
2531         SD_BUS_METHOD("LookupDynamicUserByUID", "u", "s", method_lookup_dynamic_user_by_uid, SD_BUS_VTABLE_UNPRIVILEGED),
2532         SD_BUS_METHOD("GetDynamicUsers", NULL, "a(us)", method_get_dynamic_users, SD_BUS_VTABLE_UNPRIVILEGED),
2533
2534         SD_BUS_SIGNAL("UnitNew", "so", 0),
2535         SD_BUS_SIGNAL("UnitRemoved", "so", 0),
2536         SD_BUS_SIGNAL("JobNew", "uos", 0),
2537         SD_BUS_SIGNAL("JobRemoved", "uoss", 0),
2538         SD_BUS_SIGNAL("StartupFinished", "tttttt", 0),
2539         SD_BUS_SIGNAL("UnitFilesChanged", NULL, 0),
2540         SD_BUS_SIGNAL("Reloading", "b", 0),
2541
2542         SD_BUS_VTABLE_END
2543 };
2544
2545 static int send_finished(sd_bus *bus, void *userdata) {
2546         _cleanup_(sd_bus_message_unrefp) sd_bus_message *message = NULL;
2547         usec_t *times = userdata;
2548         int r;
2549
2550         assert(bus);
2551         assert(times);
2552
2553         r = sd_bus_message_new_signal(bus, &message, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "StartupFinished");
2554         if (r < 0)
2555                 return r;
2556
2557         r = sd_bus_message_append(message, "tttttt", times[0], times[1], times[2], times[3], times[4], times[5]);
2558         if (r < 0)
2559                 return r;
2560
2561         return sd_bus_send(bus, message, NULL);
2562 }
2563
2564 void bus_manager_send_finished(
2565                 Manager *m,
2566                 usec_t firmware_usec,
2567                 usec_t loader_usec,
2568                 usec_t kernel_usec,
2569                 usec_t initrd_usec,
2570                 usec_t userspace_usec,
2571                 usec_t total_usec) {
2572
2573         int r;
2574
2575         assert(m);
2576
2577         r = bus_foreach_bus(
2578                         m,
2579                         NULL,
2580                         send_finished,
2581                         (usec_t[6]) {
2582                                 firmware_usec,
2583                                 loader_usec,
2584                                 kernel_usec,
2585                                 initrd_usec,
2586                                 userspace_usec,
2587                                 total_usec
2588                         });
2589         if (r < 0)
2590                 log_debug_errno(r, "Failed to send finished signal: %m");
2591 }
2592
2593 static int send_reloading(sd_bus *bus, void *userdata) {
2594         _cleanup_(sd_bus_message_unrefp) sd_bus_message *message = NULL;
2595         int r;
2596
2597         assert(bus);
2598
2599         r = sd_bus_message_new_signal(bus, &message, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "Reloading");
2600         if (r < 0)
2601                 return r;
2602
2603         r = sd_bus_message_append(message, "b", PTR_TO_INT(userdata));
2604         if (r < 0)
2605                 return r;
2606
2607         return sd_bus_send(bus, message, NULL);
2608 }
2609
2610 void bus_manager_send_reloading(Manager *m, bool active) {
2611         int r;
2612
2613         assert(m);
2614
2615         r = bus_foreach_bus(m, NULL, send_reloading, INT_TO_PTR(active));
2616         if (r < 0)
2617                 log_debug_errno(r, "Failed to send reloading signal: %m");
2618 }
2619
2620 static int send_changed_signal(sd_bus *bus, void *userdata) {
2621         assert(bus);
2622
2623         return sd_bus_emit_properties_changed_strv(bus,
2624                                                    "/org/freedesktop/systemd1",
2625                                                    "org.freedesktop.systemd1.Manager",
2626                                                    NULL);
2627 }
2628
2629 void bus_manager_send_change_signal(Manager *m) {
2630         int r;
2631
2632         assert(m);
2633
2634         r = bus_foreach_bus(m, NULL, send_changed_signal, NULL);
2635         if (r < 0)
2636                 log_debug_errno(r, "Failed to send manager change signal: %m");
2637 }