src/core/dbus-manager.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 /***
   3   This file is part of systemd.
   4
   5   Copyright 2010 Lennart Poettering
   6 ***/
   7
   8 #include <errno.h>
   9 #include <sys/prctl.h>
  10 #include <sys/statvfs.h>
  11 #include <unistd.h>
  12
  13 #include "alloc-util.h"
  14 #include "architecture.h"
  15 #include "build.h"
  16 #include "bus-common-errors.h"
  17 #include "dbus-execute.h"
  18 #include "dbus-job.h"
  19 #include "dbus-manager.h"
  20 #include "dbus-unit.h"
  21 #include "dbus.h"
  22 #include "env-util.h"
  23 #include "fd-util.h"
  24 #include "fileio.h"
  25 #include "format-util.h"
  26 #include "fs-util.h"
  27 #include "install.h"
  28 #include "log.h"
  29 #include "os-util.h"
  30 #include "parse-util.h"
  31 #include "path-util.h"
  32 #include "selinux-access.h"
  33 #include "stat-util.h"
  34 #include "string-util.h"
  35 #include "strv.h"
  36 #include "syslog-util.h"
  37 #include "user-util.h"
  38 #include "virt.h"
  39 #include "watchdog.h"
  40
  41 /* Require 16MiB free in /run/systemd for reloading/reexecing. After all we need to serialize our state there, and if
  42  * we can't we'll fail badly. */
  43 #define RELOAD_DISK_SPACE_MIN (UINT64_C(16) * UINT64_C(1024) * UINT64_C(1024))
  44
  45 static UnitFileFlags unit_file_bools_to_flags(bool runtime, bool force) {
  46         return (runtime ? UNIT_FILE_RUNTIME : 0) |
  47                (force   ? UNIT_FILE_FORCE   : 0);
  48 }
  49
  50 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_version, "s", PACKAGE_VERSION);
  51 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_features, "s", SYSTEMD_FEATURES);
  52 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_architecture, "s", architecture_to_string(uname_architecture()));
  53 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_log_target, "s", log_target_to_string(log_get_target()));
  54 static BUS_DEFINE_PROPERTY_GET2(property_get_system_state, "s", Manager, manager_state, manager_state_to_string);
  55 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_timer_slack_nsec, "t", (uint64_t) prctl(PR_GET_TIMERSLACK));
  56 static BUS_DEFINE_PROPERTY_GET_REF(property_get_hashmap_size, "u", Hashmap *, hashmap_size);
  57 static BUS_DEFINE_PROPERTY_GET_REF(property_get_set_size, "u", Set *, set_size);
  58
  59 static int property_get_virtualization(
  60                 sd_bus *bus,
  61                 const char *path,
  62                 const char *interface,
  63                 const char *property,
  64                 sd_bus_message *reply,
  65                 void *userdata,
  66                 sd_bus_error *error) {
  67
  68         int v;
  69
  70         assert(bus);
  71         assert(reply);
  72
  73         v = detect_virtualization();
  74
  75         /* Make sure to return the empty string when we detect no virtualization, as that is the API.
  76          *
  77          * https://github.com/systemd/systemd/issues/1423
  78          */
  79
  80         return sd_bus_message_append(
  81                         reply, "s",
  82                         v == VIRTUALIZATION_NONE ? NULL : virtualization_to_string(v));
  83 }
  84
  85 static int property_get_tainted(
  86                 sd_bus *bus,
  87                 const char *path,
  88                 const char *interface,
  89                 const char *property,
  90                 sd_bus_message *reply,
  91                 void *userdata,
  92                 sd_bus_error *error) {
  93
  94         _cleanup_free_ char *s = NULL;
  95         Manager *m = userdata;
  96
  97         assert(bus);
  98         assert(reply);
  99         assert(m);
 100
 101         s = manager_taint_string(m);
 102         if (!s)
 103                 return log_oom();
 104
 105         return sd_bus_message_append(reply, "s", s);
 106 }
 107
 108 static int property_set_log_target(
 109                 sd_bus *bus,
 110                 const char *path,
 111                 const char *interface,
 112                 const char *property,
 113                 sd_bus_message *value,
 114                 void *userdata,
 115                 sd_bus_error *error) {
 116
 117         Manager *m = userdata;
 118         const char *t;
 119         int r;
 120
 121         assert(bus);
 122         assert(value);
 123
 124         r = sd_bus_message_read(value, "s", &t);
 125         if (r < 0)
 126                 return r;
 127
 128         if (isempty(t))
 129                 manager_restore_original_log_target(m);
 130         else {
 131                 LogTarget target;
 132
 133                 target = log_target_from_string(t);
 134                 if (target < 0)
 135                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid log target '%s'", t);
 136
 137                 manager_override_log_target(m, target);
 138         }
 139
 140         return 0;
 141 }
 142
 143 static int property_get_log_level(
 144                 sd_bus *bus,
 145                 const char *path,
 146                 const char *interface,
 147                 const char *property,
 148                 sd_bus_message *reply,
 149                 void *userdata,
 150                 sd_bus_error *error) {
 151
 152         _cleanup_free_ char *t = NULL;
 153         int r;
 154
 155         assert(bus);
 156         assert(reply);
 157
 158         r = log_level_to_string_alloc(log_get_max_level(), &t);
 159         if (r < 0)
 160                 return r;
 161
 162         return sd_bus_message_append(reply, "s", t);
 163 }
 164
 165 static int property_set_log_level(
 166                 sd_bus *bus,
 167                 const char *path,
 168                 const char *interface,
 169                 const char *property,
 170                 sd_bus_message *value,
 171                 void *userdata,
 172                 sd_bus_error *error) {
 173
 174         Manager *m = userdata;
 175         const char *t;
 176         int r;
 177
 178         assert(bus);
 179         assert(value);
 180
 181         r = sd_bus_message_read(value, "s", &t);
 182         if (r < 0)
 183                 return r;
 184
 185         if (isempty(t))
 186                 manager_restore_original_log_level(m);
 187         else {
 188                 int level;
 189
 190                 level = log_level_from_string(t);
 191                 if (level < 0)
 192                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid log level '%s'", t);
 193
 194                 manager_override_log_level(m, level);
 195         }
 196
 197         return 0;
 198 }
 199
 200 static int property_get_progress(
 201                 sd_bus *bus,
 202                 const char *path,
 203                 const char *interface,
 204                 const char *property,
 205                 sd_bus_message *reply,
 206                 void *userdata,
 207                 sd_bus_error *error) {
 208
 209         Manager *m = userdata;
 210         double d;
 211
 212         assert(bus);
 213         assert(reply);
 214         assert(m);
 215
 216         if (MANAGER_IS_FINISHED(m))
 217                 d = 1.0;
 218         else
 219                 d = 1.0 - ((double) hashmap_size(m->jobs) / (double) m->n_installed_jobs);
 220
 221         return sd_bus_message_append(reply, "d", d);
 222 }
 223
 224 static int property_get_show_status(
 225                 sd_bus *bus,
 226                 const char *path,
 227                 const char *interface,
 228                 const char *property,
 229                 sd_bus_message *reply,
 230                 void *userdata,
 231                 sd_bus_error *error) {
 232
 233         Manager *m = userdata;
 234         int b;
 235
 236         assert(bus);
 237         assert(reply);
 238         assert(m);
 239
 240         b = m->show_status > 0;
 241         return sd_bus_message_append_basic(reply, 'b', &b);
 242 }
 243
 244 static int property_set_runtime_watchdog(
 245                 sd_bus *bus,
 246                 const char *path,
 247                 const char *interface,
 248                 const char *property,
 249                 sd_bus_message *value,
 250                 void *userdata,
 251                 sd_bus_error *error) {
 252
 253         usec_t *t = userdata;
 254         int r;
 255
 256         assert(bus);
 257         assert(value);
 258
 259         assert_cc(sizeof(usec_t) == sizeof(uint64_t));
 260
 261         r = sd_bus_message_read(value, "t", t);
 262         if (r < 0)
 263                 return r;
 264
 265         return watchdog_set_timeout(t);
 266 }
 267
 268 static int bus_get_unit_by_name(Manager *m, sd_bus_message *message, const char *name, Unit **ret_unit, sd_bus_error *error) {
 269         Unit *u;
 270         int r;
 271
 272         assert(m);
 273         assert(message);
 274         assert(ret_unit);
 275
 276         /* More or less a wrapper around manager_get_unit() that generates nice errors and has one trick up its sleeve:
 277          * if the name is specified empty we use the client's unit. */
 278
 279         if (isempty(name)) {
 280                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 281                 pid_t pid;
 282
 283                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 284                 if (r < 0)
 285                         return r;
 286
 287                 r = sd_bus_creds_get_pid(creds, &pid);
 288                 if (r < 0)
 289                         return r;
 290
 291                 u = manager_get_unit_by_pid(m, pid);
 292                 if (!u)
 293                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Client not member of any unit.");
 294         } else {
 295                 u = manager_get_unit(m, name);
 296                 if (!u)
 297                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s not loaded.", name);
 298         }
 299
 300         *ret_unit = u;
 301         return 0;
 302 }
 303
 304 static int bus_load_unit_by_name(Manager *m, sd_bus_message *message, const char *name, Unit **ret_unit, sd_bus_error *error) {
 305         assert(m);
 306         assert(message);
 307         assert(ret_unit);
 308
 309         /* Pretty much the same as bus_get_unit_by_name(), but we also load the unit if necessary. */
 310
 311         if (isempty(name))
 312                 return bus_get_unit_by_name(m, message, name, ret_unit, error);
 313
 314         return manager_load_unit(m, name, NULL, error, ret_unit);
 315 }
 316
 317 static int method_get_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 318         _cleanup_free_ char *path = NULL;
 319         Manager *m = userdata;
 320         const char *name;
 321         Unit *u;
 322         int r;
 323
 324         assert(message);
 325         assert(m);
 326
 327         /* Anyone can call this method */
 328
 329         r = sd_bus_message_read(message, "s", &name);
 330         if (r < 0)
 331                 return r;
 332
 333         r = bus_get_unit_by_name(m, message, name, &u, error);
 334         if (r < 0)
 335                 return r;
 336
 337         r = mac_selinux_unit_access_check(u, message, "status", error);
 338         if (r < 0)
 339                 return r;
 340
 341         path = unit_dbus_path(u);
 342         if (!path)
 343                 return -ENOMEM;
 344
 345         return sd_bus_reply_method_return(message, "o", path);
 346 }
 347
 348 static int method_get_unit_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 349         _cleanup_free_ char *path = NULL;
 350         Manager *m = userdata;
 351         pid_t pid;
 352         Unit *u;
 353         int r;
 354
 355         assert(message);
 356         assert(m);
 357
 358         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 359
 360         /* Anyone can call this method */
 361
 362         r = sd_bus_message_read(message, "u", &pid);
 363         if (r < 0)
 364                 return r;
 365         if (pid < 0)
 366                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid PID " PID_FMT, pid);
 367
 368         if (pid == 0) {
 369                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 370
 371                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 372                 if (r < 0)
 373                         return r;
 374
 375                 r = sd_bus_creds_get_pid(creds, &pid);
 376                 if (r < 0)
 377                         return r;
 378         }
 379
 380         u = manager_get_unit_by_pid(m, pid);
 381         if (!u)
 382                 return sd_bus_error_setf(error, BUS_ERROR_NO_UNIT_FOR_PID, "PID "PID_FMT" does not belong to any loaded unit.", pid);
 383
 384         r = mac_selinux_unit_access_check(u, message, "status", error);
 385         if (r < 0)
 386                 return r;
 387
 388         path = unit_dbus_path(u);
 389         if (!path)
 390                 return -ENOMEM;
 391
 392         return sd_bus_reply_method_return(message, "o", path);
 393 }
 394
 395 static int method_get_unit_by_invocation_id(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 396         _cleanup_free_ char *path = NULL;
 397         Manager *m = userdata;
 398         sd_id128_t id;
 399         const void *a;
 400         Unit *u;
 401         size_t sz;
 402         int r;
 403
 404         assert(message);
 405         assert(m);
 406
 407         /* Anyone can call this method */
 408
 409         r = sd_bus_message_read_array(message, 'y', &a, &sz);
 410         if (r < 0)
 411                 return r;
 412         if (sz == 0)
 413                 id = SD_ID128_NULL;
 414         else if (sz == 16)
 415                 memcpy(&id, a, sz);
 416         else
 417                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid invocation ID");
 418
 419         if (sd_id128_is_null(id)) {
 420                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 421                 pid_t pid;
 422
 423                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 424                 if (r < 0)
 425                         return r;
 426
 427                 r = sd_bus_creds_get_pid(creds, &pid);
 428                 if (r < 0)
 429                         return r;
 430
 431                 u = manager_get_unit_by_pid(m, pid);
 432                 if (!u)
 433                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Client " PID_FMT " not member of any unit.", pid);
 434         } else {
 435                 u = hashmap_get(m->units_by_invocation_id, &id);
 436                 if (!u)
 437                         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));
 438         }
 439
 440         r = mac_selinux_unit_access_check(u, message, "status", error);
 441         if (r < 0)
 442                 return r;
 443
 444         /* So here's a special trick: the bus path we return actually references the unit by its invocation ID instead
 445          * of the unit name. This means it stays valid only as long as the invocation ID stays the same. */
 446         path = unit_dbus_path_invocation_id(u);
 447         if (!path)
 448                 return -ENOMEM;
 449
 450         return sd_bus_reply_method_return(message, "o", path);
 451 }
 452
 453 static int method_get_unit_by_control_group(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 454         _cleanup_free_ char *path = NULL;
 455         Manager *m = userdata;
 456         const char *cgroup;
 457         Unit *u;
 458         int r;
 459
 460         r = sd_bus_message_read(message, "s", &cgroup);
 461         if (r < 0)
 462                 return r;
 463
 464         u = manager_get_unit_by_cgroup(m, cgroup);
 465         if (!u)
 466                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Control group '%s' is not valid or not managed by this instance", cgroup);
 467
 468         r = mac_selinux_unit_access_check(u, message, "status", error);
 469         if (r < 0)
 470                 return r;
 471
 472         path = unit_dbus_path(u);
 473         if (!path)
 474                 return -ENOMEM;
 475
 476         return sd_bus_reply_method_return(message, "o", path);
 477 }
 478
 479 static int method_load_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 480         _cleanup_free_ char *path = NULL;
 481         Manager *m = userdata;
 482         const char *name;
 483         Unit *u;
 484         int r;
 485
 486         assert(message);
 487         assert(m);
 488
 489         /* Anyone can call this method */
 490
 491         r = sd_bus_message_read(message, "s", &name);
 492         if (r < 0)
 493                 return r;
 494
 495         r = bus_load_unit_by_name(m, message, name, &u, error);
 496         if (r < 0)
 497                 return r;
 498
 499         r = mac_selinux_unit_access_check(u, message, "status", error);
 500         if (r < 0)
 501                 return r;
 502
 503         path = unit_dbus_path(u);
 504         if (!path)
 505                 return -ENOMEM;
 506
 507         return sd_bus_reply_method_return(message, "o", path);
 508 }
 509
 510 static int method_start_unit_generic(sd_bus_message *message, Manager *m, JobType job_type, bool reload_if_possible, sd_bus_error *error) {
 511         const char *name;
 512         Unit *u;
 513         int r;
 514
 515         assert(message);
 516         assert(m);
 517
 518         r = sd_bus_message_read(message, "s", &name);
 519         if (r < 0)
 520                 return r;
 521
 522         r = manager_load_unit(m, name, NULL, error, &u);
 523         if (r < 0)
 524                 return r;
 525
 526         return bus_unit_method_start_generic(message, u, job_type, reload_if_possible, error);
 527 }
 528
 529 static int method_start_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 530         return method_start_unit_generic(message, userdata, JOB_START, false, error);
 531 }
 532
 533 static int method_stop_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 534         return method_start_unit_generic(message, userdata, JOB_STOP, false, error);
 535 }
 536
 537 static int method_reload_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 538         return method_start_unit_generic(message, userdata, JOB_RELOAD, false, error);
 539 }
 540
 541 static int method_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 542         return method_start_unit_generic(message, userdata, JOB_RESTART, false, error);
 543 }
 544
 545 static int method_try_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 546         return method_start_unit_generic(message, userdata, JOB_TRY_RESTART, false, error);
 547 }
 548
 549 static int method_reload_or_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 550         return method_start_unit_generic(message, userdata, JOB_RESTART, true, error);
 551 }
 552
 553 static int method_reload_or_try_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 554         return method_start_unit_generic(message, userdata, JOB_TRY_RESTART, true, error);
 555 }
 556
 557 static int method_start_unit_replace(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 558         Manager *m = userdata;
 559         const char *old_name;
 560         Unit *u;
 561         int r;
 562
 563         assert(message);
 564         assert(m);
 565
 566         r = sd_bus_message_read(message, "s", &old_name);
 567         if (r < 0)
 568                 return r;
 569
 570         r = bus_get_unit_by_name(m, message, old_name, &u, error);
 571         if (r < 0)
 572                 return r;
 573         if (!u->job || u->job->type != JOB_START)
 574                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "No job queued for unit %s", old_name);
 575
 576         return method_start_unit_generic(message, m, JOB_START, false, error);
 577 }
 578
 579 static int method_kill_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 580         Manager *m = userdata;
 581         const char *name;
 582         Unit *u;
 583         int r;
 584
 585         assert(message);
 586         assert(m);
 587
 588         r = sd_bus_message_read(message, "s", &name);
 589         if (r < 0)
 590                 return r;
 591
 592         r = bus_get_unit_by_name(m, message, name, &u, error);
 593         if (r < 0)
 594                 return r;
 595
 596         return bus_unit_method_kill(message, u, error);
 597 }
 598
 599 static int method_reset_failed_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 600         Manager *m = userdata;
 601         const char *name;
 602         Unit *u;
 603         int r;
 604
 605         assert(message);
 606         assert(m);
 607
 608         r = sd_bus_message_read(message, "s", &name);
 609         if (r < 0)
 610                 return r;
 611
 612         r = bus_get_unit_by_name(m, message, name, &u, error);
 613         if (r < 0)
 614                 return r;
 615
 616         return bus_unit_method_reset_failed(message, u, error);
 617 }
 618
 619 static int method_set_unit_properties(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 620         Manager *m = userdata;
 621         const char *name;
 622         Unit *u;
 623         int r;
 624
 625         assert(message);
 626         assert(m);
 627
 628         r = sd_bus_message_read(message, "s", &name);
 629         if (r < 0)
 630                 return r;
 631
 632         r = bus_load_unit_by_name(m, message, name, &u, error);
 633         if (r < 0)
 634                 return r;
 635
 636         r = bus_unit_validate_load_state(u, error);
 637         if (r < 0)
 638                 return r;
 639
 640         return bus_unit_method_set_properties(message, u, error);
 641 }
 642
 643 static int method_ref_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 644         Manager *m = userdata;
 645         const char *name;
 646         Unit *u;
 647         int r;
 648
 649         assert(message);
 650         assert(m);
 651
 652         r = sd_bus_message_read(message, "s", &name);
 653         if (r < 0)
 654                 return r;
 655
 656         r = bus_load_unit_by_name(m, message, name, &u, error);
 657         if (r < 0)
 658                 return r;
 659
 660         r = bus_unit_validate_load_state(u, error);
 661         if (r < 0)
 662                 return r;
 663
 664         return bus_unit_method_ref(message, u, error);
 665 }
 666
 667 static int method_unref_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 668         Manager *m = userdata;
 669         const char *name;
 670         Unit *u;
 671         int r;
 672
 673         assert(message);
 674         assert(m);
 675
 676         r = sd_bus_message_read(message, "s", &name);
 677         if (r < 0)
 678                 return r;
 679
 680         r = bus_load_unit_by_name(m, message, name, &u, error);
 681         if (r < 0)
 682                 return r;
 683
 684         r = bus_unit_validate_load_state(u, error);
 685         if (r < 0)
 686                 return r;
 687
 688         return bus_unit_method_unref(message, u, error);
 689 }
 690
 691 static int reply_unit_info(sd_bus_message *reply, Unit *u) {
 692         _cleanup_free_ char *unit_path = NULL, *job_path = NULL;
 693         Unit *following;
 694
 695         following = unit_following(u);
 696
 697         unit_path = unit_dbus_path(u);
 698         if (!unit_path)
 699                 return -ENOMEM;
 700
 701         if (u->job) {
 702                 job_path = job_dbus_path(u->job);
 703                 if (!job_path)
 704                         return -ENOMEM;
 705         }
 706
 707         return sd_bus_message_append(
 708                         reply, "(ssssssouso)",
 709                         u->id,
 710                         unit_description(u),
 711                         unit_load_state_to_string(u->load_state),
 712                         unit_active_state_to_string(unit_active_state(u)),
 713                         unit_sub_state_to_string(u),
 714                         following ? following->id : "",
 715                         unit_path,
 716                         u->job ? u->job->id : 0,
 717                         u->job ? job_type_to_string(u->job->type) : "",
 718                         job_path ? job_path : "/");
 719 }
 720
 721 static int method_list_units_by_names(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 722         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 723         Manager *m = userdata;
 724         int r;
 725         char **unit;
 726         _cleanup_strv_free_ char **units = NULL;
 727
 728         assert(message);
 729         assert(m);
 730
 731         r = sd_bus_message_read_strv(message, &units);
 732         if (r < 0)
 733                 return r;
 734
 735         r = sd_bus_message_new_method_return(message, &reply);
 736         if (r < 0)
 737                 return r;
 738
 739         r = sd_bus_message_open_container(reply, 'a', "(ssssssouso)");
 740         if (r < 0)
 741                 return r;
 742
 743         STRV_FOREACH(unit, units) {
 744                 Unit *u;
 745
 746                 if (!unit_name_is_valid(*unit, UNIT_NAME_ANY))
 747                         continue;
 748
 749                 r = bus_load_unit_by_name(m, message, *unit, &u, error);
 750                 if (r < 0)
 751                         return r;
 752
 753                 r = reply_unit_info(reply, u);
 754                 if (r < 0)
 755                         return r;
 756         }
 757
 758         r = sd_bus_message_close_container(reply);
 759         if (r < 0)
 760                 return r;
 761
 762         return sd_bus_send(NULL, reply, NULL);
 763 }
 764
 765 static int method_get_unit_processes(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 766         Manager *m = userdata;
 767         const char *name;
 768         Unit *u;
 769         int r;
 770
 771         assert(message);
 772         assert(m);
 773
 774         r = sd_bus_message_read(message, "s", &name);
 775         if (r < 0)
 776                 return r;
 777
 778         r = bus_get_unit_by_name(m, message, name, &u, error);
 779         if (r < 0)
 780                 return r;
 781
 782         return bus_unit_method_get_processes(message, u, error);
 783 }
 784
 785 static int method_attach_processes_to_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 786         Manager *m = userdata;
 787         const char *name;
 788         Unit *u;
 789         int r;
 790
 791         assert(message);
 792         assert(m);
 793
 794         r = sd_bus_message_read(message, "s", &name);
 795         if (r < 0)
 796                 return r;
 797
 798         r = bus_get_unit_by_name(m, message, name, &u, error);
 799         if (r < 0)
 800                 return r;
 801
 802         return bus_unit_method_attach_processes(message, u, error);
 803 }
 804
 805 static int transient_unit_from_message(
 806                 Manager *m,
 807                 sd_bus_message *message,
 808                 const char *name,
 809                 Unit **unit,
 810                 sd_bus_error *error) {
 811
 812         UnitType t;
 813         Unit *u;
 814         int r;
 815
 816         assert(m);
 817         assert(message);
 818         assert(name);
 819
 820         t = unit_name_to_type(name);
 821         if (t < 0)
 822                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid unit name or type.");
 823
 824         if (!unit_vtable[t]->can_transient)
 825                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unit type %s does not support transient units.", unit_type_to_string(t));
 826
 827         r = manager_load_unit(m, name, NULL, error, &u);
 828         if (r < 0)
 829                 return r;
 830
 831         if (!unit_is_pristine(u))
 832                 return sd_bus_error_setf(error, BUS_ERROR_UNIT_EXISTS, "Unit %s already exists.", name);
 833
 834         /* OK, the unit failed to load and is unreferenced, now let's
 835          * fill in the transient data instead */
 836         r = unit_make_transient(u);
 837         if (r < 0)
 838                 return r;
 839
 840         /* Set our properties */
 841         r = bus_unit_set_properties(u, message, UNIT_RUNTIME, false, error);
 842         if (r < 0)
 843                 return r;
 844
 845         /* If the client asked for it, automatically add a reference to this unit. */
 846         if (u->bus_track_add) {
 847                 r = bus_unit_track_add_sender(u, message);
 848                 if (r < 0)
 849                         return log_error_errno(r, "Failed to watch sender: %m");
 850         }
 851
 852         /* Now load the missing bits of the unit we just created */
 853         unit_add_to_load_queue(u);
 854         manager_dispatch_load_queue(m);
 855
 856         *unit = u;
 857
 858         return 0;
 859 }
 860
 861 static int transient_aux_units_from_message(
 862                 Manager *m,
 863                 sd_bus_message *message,
 864                 sd_bus_error *error) {
 865
 866         int r;
 867
 868         assert(m);
 869         assert(message);
 870
 871         r = sd_bus_message_enter_container(message, 'a', "(sa(sv))");
 872         if (r < 0)
 873                 return r;
 874
 875         while ((r = sd_bus_message_enter_container(message, 'r', "sa(sv)")) > 0) {
 876                 const char *name = NULL;
 877                 Unit *u;
 878
 879                 r = sd_bus_message_read(message, "s", &name);
 880                 if (r < 0)
 881                         return r;
 882
 883                 r = transient_unit_from_message(m, message, name, &u, error);
 884                 if (r < 0)
 885                         return r;
 886
 887                 r = sd_bus_message_exit_container(message);
 888                 if (r < 0)
 889                         return r;
 890         }
 891         if (r < 0)
 892                 return r;
 893
 894         r = sd_bus_message_exit_container(message);
 895         if (r < 0)
 896                 return r;
 897
 898         return 0;
 899 }
 900
 901 static int method_start_transient_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 902         const char *name, *smode;
 903         Manager *m = userdata;
 904         JobMode mode;
 905         Unit *u;
 906         int r;
 907
 908         assert(message);
 909         assert(m);
 910
 911         r = mac_selinux_access_check(message, "start", error);
 912         if (r < 0)
 913                 return r;
 914
 915         r = sd_bus_message_read(message, "ss", &name, &smode);
 916         if (r < 0)
 917                 return r;
 918
 919         mode = job_mode_from_string(smode);
 920         if (mode < 0)
 921                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Job mode %s is invalid.", smode);
 922
 923         r = bus_verify_manage_units_async(m, message, error);
 924         if (r < 0)
 925                 return r;
 926         if (r == 0)
 927                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
 928
 929         r = transient_unit_from_message(m, message, name, &u, error);
 930         if (r < 0)
 931                 return r;
 932
 933         r = transient_aux_units_from_message(m, message, error);
 934         if (r < 0)
 935                 return r;
 936
 937         /* Finally, start it */
 938         return bus_unit_queue_job(message, u, JOB_START, mode, false, error);
 939 }
 940
 941 static int method_get_job(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 942         _cleanup_free_ char *path = NULL;
 943         Manager *m = userdata;
 944         uint32_t id;
 945         Job *j;
 946         int r;
 947
 948         assert(message);
 949         assert(m);
 950
 951         /* Anyone can call this method */
 952
 953         r = sd_bus_message_read(message, "u", &id);
 954         if (r < 0)
 955                 return r;
 956
 957         j = manager_get_job(m, id);
 958         if (!j)
 959                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
 960
 961         r = mac_selinux_unit_access_check(j->unit, message, "status", error);
 962         if (r < 0)
 963                 return r;
 964
 965         path = job_dbus_path(j);
 966         if (!path)
 967                 return -ENOMEM;
 968
 969         return sd_bus_reply_method_return(message, "o", path);
 970 }
 971
 972 static int method_cancel_job(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 973         Manager *m = userdata;
 974         uint32_t id;
 975         Job *j;
 976         int r;
 977
 978         assert(message);
 979         assert(m);
 980
 981         r = sd_bus_message_read(message, "u", &id);
 982         if (r < 0)
 983                 return r;
 984
 985         j = manager_get_job(m, id);
 986         if (!j)
 987                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
 988
 989         return bus_job_method_cancel(message, j, error);
 990 }
 991
 992 static int method_clear_jobs(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 993         Manager *m = userdata;
 994         int r;
 995
 996         assert(message);
 997         assert(m);
 998
 999         r = mac_selinux_access_check(message, "reload", error);
1000         if (r < 0)
1001                 return r;
1002
1003         r = bus_verify_manage_units_async(m, message, error);
1004         if (r < 0)
1005                 return r;
1006         if (r == 0)
1007                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1008
1009         manager_clear_jobs(m);
1010
1011         return sd_bus_reply_method_return(message, NULL);
1012 }
1013
1014 static int method_reset_failed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1015         Manager *m = userdata;
1016         int r;
1017
1018         assert(message);
1019         assert(m);
1020
1021         r = mac_selinux_access_check(message, "reload", error);
1022         if (r < 0)
1023                 return r;
1024
1025         r = bus_verify_manage_units_async(m, message, error);
1026         if (r < 0)
1027                 return r;
1028         if (r == 0)
1029                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1030
1031         manager_reset_failed(m);
1032
1033         return sd_bus_reply_method_return(message, NULL);
1034 }
1035
1036 static int list_units_filtered(sd_bus_message *message, void *userdata, sd_bus_error *error, char **states, char **patterns) {
1037         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1038         Manager *m = userdata;
1039         const char *k;
1040         Iterator i;
1041         Unit *u;
1042         int r;
1043
1044         assert(message);
1045         assert(m);
1046
1047         /* Anyone can call this method */
1048
1049         r = mac_selinux_access_check(message, "status", error);
1050         if (r < 0)
1051                 return r;
1052
1053         r = sd_bus_message_new_method_return(message, &reply);
1054         if (r < 0)
1055                 return r;
1056
1057         r = sd_bus_message_open_container(reply, 'a', "(ssssssouso)");
1058         if (r < 0)
1059                 return r;
1060
1061         HASHMAP_FOREACH_KEY(u, k, m->units, i) {
1062                 if (k != u->id)
1063                         continue;
1064
1065                 if (!strv_isempty(states) &&
1066                     !strv_contains(states, unit_load_state_to_string(u->load_state)) &&
1067                     !strv_contains(states, unit_active_state_to_string(unit_active_state(u))) &&
1068                     !strv_contains(states, unit_sub_state_to_string(u)))
1069                         continue;
1070
1071                 if (!strv_isempty(patterns) &&
1072                     !strv_fnmatch_or_empty(patterns, u->id, FNM_NOESCAPE))
1073                         continue;
1074
1075                 r = reply_unit_info(reply, u);
1076                 if (r < 0)
1077                         return r;
1078         }
1079
1080         r = sd_bus_message_close_container(reply);
1081         if (r < 0)
1082                 return r;
1083
1084         return sd_bus_send(NULL, reply, NULL);
1085 }
1086
1087 static int method_list_units(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1088         return list_units_filtered(message, userdata, error, NULL, NULL);
1089 }
1090
1091 static int method_list_units_filtered(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1092         _cleanup_strv_free_ char **states = NULL;
1093         int r;
1094
1095         r = sd_bus_message_read_strv(message, &states);
1096         if (r < 0)
1097                 return r;
1098
1099         return list_units_filtered(message, userdata, error, states, NULL);
1100 }
1101
1102 static int method_list_units_by_patterns(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1103         _cleanup_strv_free_ char **states = NULL;
1104         _cleanup_strv_free_ char **patterns = NULL;
1105         int r;
1106
1107         r = sd_bus_message_read_strv(message, &states);
1108         if (r < 0)
1109                 return r;
1110
1111         r = sd_bus_message_read_strv(message, &patterns);
1112         if (r < 0)
1113                 return r;
1114
1115         return list_units_filtered(message, userdata, error, states, patterns);
1116 }
1117
1118 static int method_list_jobs(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1119         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1120         Manager *m = userdata;
1121         Iterator i;
1122         Job *j;
1123         int r;
1124
1125         assert(message);
1126         assert(m);
1127
1128         /* Anyone can call this method */
1129
1130         r = mac_selinux_access_check(message, "status", error);
1131         if (r < 0)
1132                 return r;
1133
1134         r = sd_bus_message_new_method_return(message, &reply);
1135         if (r < 0)
1136                 return r;
1137
1138         r = sd_bus_message_open_container(reply, 'a', "(usssoo)");
1139         if (r < 0)
1140                 return r;
1141
1142         HASHMAP_FOREACH(j, m->jobs, i) {
1143                 _cleanup_free_ char *unit_path = NULL, *job_path = NULL;
1144
1145                 job_path = job_dbus_path(j);
1146                 if (!job_path)
1147                         return -ENOMEM;
1148
1149                 unit_path = unit_dbus_path(j->unit);
1150                 if (!unit_path)
1151                         return -ENOMEM;
1152
1153                 r = sd_bus_message_append(
1154                                 reply, "(usssoo)",
1155                                 j->id,
1156                                 j->unit->id,
1157                                 job_type_to_string(j->type),
1158                                 job_state_to_string(j->state),
1159                                 job_path,
1160                                 unit_path);
1161                 if (r < 0)
1162                         return r;
1163         }
1164
1165         r = sd_bus_message_close_container(reply);
1166         if (r < 0)
1167                 return r;
1168
1169         return sd_bus_send(NULL, reply, NULL);
1170 }
1171
1172 static int method_subscribe(sd_bus_message *message, void *userdata, sd_bus_error *error) {
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         if (sd_bus_message_get_bus(message) == m->api_bus) {
1186
1187                 /* Note that direct bus connection subscribe by
1188                  * default, we only track peers on the API bus here */
1189
1190                 if (!m->subscribed) {
1191                         r = sd_bus_track_new(sd_bus_message_get_bus(message), &m->subscribed, NULL, NULL);
1192                         if (r < 0)
1193                                 return r;
1194                 }
1195
1196                 r = sd_bus_track_add_sender(m->subscribed, message);
1197                 if (r < 0)
1198                         return r;
1199                 if (r == 0)
1200                         return sd_bus_error_setf(error, BUS_ERROR_ALREADY_SUBSCRIBED, "Client is already subscribed.");
1201         }
1202
1203         return sd_bus_reply_method_return(message, NULL);
1204 }
1205
1206 static int method_unsubscribe(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1207         Manager *m = userdata;
1208         int r;
1209
1210         assert(message);
1211         assert(m);
1212
1213         /* Anyone can call this method */
1214
1215         r = mac_selinux_access_check(message, "status", error);
1216         if (r < 0)
1217                 return r;
1218
1219         if (sd_bus_message_get_bus(message) == m->api_bus) {
1220                 r = sd_bus_track_remove_sender(m->subscribed, message);
1221                 if (r < 0)
1222                         return r;
1223                 if (r == 0)
1224                         return sd_bus_error_setf(error, BUS_ERROR_NOT_SUBSCRIBED, "Client is not subscribed.");
1225         }
1226
1227         return sd_bus_reply_method_return(message, NULL);
1228 }
1229
1230 static int dump_impl(sd_bus_message *message, void *userdata, sd_bus_error *error, int (*reply)(sd_bus_message *, char *)) {
1231         _cleanup_free_ char *dump = NULL;
1232         Manager *m = userdata;
1233         int r;
1234
1235         assert(message);
1236         assert(m);
1237
1238         /* Anyone can call this method */
1239
1240         r = mac_selinux_access_check(message, "status", error);
1241         if (r < 0)
1242                 return r;
1243
1244         r = manager_get_dump_string(m, &dump);
1245         if (r < 0)
1246                 return r;
1247
1248         return reply(message, dump);
1249 }
1250
1251 static int reply_dump(sd_bus_message *message, char *dump) {
1252         return sd_bus_reply_method_return(message, "s", dump);
1253 }
1254
1255 static int method_dump(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1256         return dump_impl(message, userdata, error, reply_dump);
1257 }
1258
1259 static int reply_dump_by_fd(sd_bus_message *message, char *dump) {
1260         _cleanup_close_ int fd = -1;
1261
1262         fd = acquire_data_fd(dump, strlen(dump), 0);
1263         if (fd < 0)
1264                 return fd;
1265
1266         return sd_bus_reply_method_return(message, "h", fd);
1267 }
1268
1269 static int method_dump_by_fd(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1270         return dump_impl(message, userdata, error, reply_dump_by_fd);
1271 }
1272
1273 static int method_refuse_snapshot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1274         return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Support for snapshots has been removed.");
1275 }
1276
1277 static int verify_run_space(const char *message, sd_bus_error *error) {
1278         struct statvfs svfs;
1279         uint64_t available;
1280
1281         if (statvfs("/run/systemd", &svfs) < 0)
1282                 return sd_bus_error_set_errnof(error, errno, "Failed to statvfs(/run/systemd): %m");
1283
1284         available = (uint64_t) svfs.f_bfree * (uint64_t) svfs.f_bsize;
1285
1286         if (available < RELOAD_DISK_SPACE_MIN) {
1287                 char fb_available[FORMAT_BYTES_MAX], fb_need[FORMAT_BYTES_MAX];
1288                 return sd_bus_error_setf(error,
1289                                          BUS_ERROR_DISK_FULL,
1290                                          "%s, not enough space available on /run/systemd. "
1291                                          "Currently, %s are free, but a safety buffer of %s is enforced.",
1292                                          message,
1293                                          format_bytes(fb_available, sizeof(fb_available), available),
1294                                          format_bytes(fb_need, sizeof(fb_need), RELOAD_DISK_SPACE_MIN));
1295         }
1296
1297         return 0;
1298 }
1299
1300 int verify_run_space_and_log(const char *message) {
1301         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1302         int r;
1303
1304         r = verify_run_space(message, &error);
1305         if (r < 0)
1306                 log_error_errno(r, "%s", bus_error_message(&error, r));
1307
1308         return r;
1309 }
1310
1311 static int method_reload(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1312         Manager *m = userdata;
1313         int r;
1314
1315         assert(message);
1316         assert(m);
1317
1318         r = verify_run_space("Refusing to reload", error);
1319         if (r < 0)
1320                 return r;
1321
1322         r = mac_selinux_access_check(message, "reload", error);
1323         if (r < 0)
1324                 return r;
1325
1326         r = bus_verify_reload_daemon_async(m, message, error);
1327         if (r < 0)
1328                 return r;
1329         if (r == 0)
1330                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1331
1332         /* Instead of sending the reply back right away, we just
1333          * remember that we need to and then send it after the reload
1334          * is finished. That way the caller knows when the reload
1335          * finished. */
1336
1337         assert(!m->queued_message);
1338         r = sd_bus_message_new_method_return(message, &m->queued_message);
1339         if (r < 0)
1340                 return r;
1341
1342         m->exit_code = MANAGER_RELOAD;
1343
1344         return 1;
1345 }
1346
1347 static int method_reexecute(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1348         Manager *m = userdata;
1349         int r;
1350
1351         assert(message);
1352         assert(m);
1353
1354         r = verify_run_space("Refusing to reexecute", error);
1355         if (r < 0)
1356                 return r;
1357
1358         r = mac_selinux_access_check(message, "reload", error);
1359         if (r < 0)
1360                 return r;
1361
1362         r = bus_verify_reload_daemon_async(m, message, error);
1363         if (r < 0)
1364                 return r;
1365         if (r == 0)
1366                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1367
1368         /* We don't send a reply back here, the client should
1369          * just wait for us disconnecting. */
1370
1371         m->exit_code = MANAGER_REEXECUTE;
1372         return 1;
1373 }
1374
1375 static int method_exit(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         /* Exit() (in contrast to SetExitCode()) is actually allowed even if
1387          * we are running on the host. It will fall back on reboot() in
1388          * systemd-shutdown if it cannot do the exit() because it isn't a
1389          * container. */
1390
1391         m->exit_code = MANAGER_EXIT;
1392
1393         return sd_bus_reply_method_return(message, NULL);
1394 }
1395
1396 static int method_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1397         Manager *m = userdata;
1398         int r;
1399
1400         assert(message);
1401         assert(m);
1402
1403         r = mac_selinux_access_check(message, "reboot", error);
1404         if (r < 0)
1405                 return r;
1406
1407         if (!MANAGER_IS_SYSTEM(m))
1408                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Reboot is only supported for system managers.");
1409
1410         m->exit_code = MANAGER_REBOOT;
1411
1412         return sd_bus_reply_method_return(message, NULL);
1413 }
1414
1415 static int method_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1416         Manager *m = userdata;
1417         int r;
1418
1419         assert(message);
1420         assert(m);
1421
1422         r = mac_selinux_access_check(message, "halt", error);
1423         if (r < 0)
1424                 return r;
1425
1426         if (!MANAGER_IS_SYSTEM(m))
1427                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Powering off is only supported for system managers.");
1428
1429         m->exit_code = MANAGER_POWEROFF;
1430
1431         return sd_bus_reply_method_return(message, NULL);
1432 }
1433
1434 static int method_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1435         Manager *m = userdata;
1436         int r;
1437
1438         assert(message);
1439         assert(m);
1440
1441         r = mac_selinux_access_check(message, "halt", error);
1442         if (r < 0)
1443                 return r;
1444
1445         if (!MANAGER_IS_SYSTEM(m))
1446                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Halt is only supported for system managers.");
1447
1448         m->exit_code = MANAGER_HALT;
1449
1450         return sd_bus_reply_method_return(message, NULL);
1451 }
1452
1453 static int method_kexec(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1454         Manager *m = userdata;
1455         int r;
1456
1457         assert(message);
1458         assert(m);
1459
1460         r = mac_selinux_access_check(message, "reboot", error);
1461         if (r < 0)
1462                 return r;
1463
1464         if (!MANAGER_IS_SYSTEM(m))
1465                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "KExec is only supported for system managers.");
1466
1467         m->exit_code = MANAGER_KEXEC;
1468
1469         return sd_bus_reply_method_return(message, NULL);
1470 }
1471
1472 static int method_switch_root(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1473         char *ri = NULL, *rt = NULL;
1474         const char *root, *init;
1475         Manager *m = userdata;
1476         struct statvfs svfs;
1477         uint64_t available;
1478         int r;
1479
1480         assert(message);
1481         assert(m);
1482
1483         if (statvfs("/run/systemd", &svfs) < 0)
1484                 return sd_bus_error_set_errnof(error, errno, "Failed to statvfs(/run/systemd): %m");
1485
1486         available = (uint64_t) svfs.f_bfree * (uint64_t) svfs.f_bsize;
1487
1488         if (available < RELOAD_DISK_SPACE_MIN) {
1489                 char fb_available[FORMAT_BYTES_MAX], fb_need[FORMAT_BYTES_MAX];
1490                 log_warning("Dangerously low amount of free space on /run/systemd, root switching operation might not complete successfuly. "
1491                             "Currently, %s are free, but %s are suggested. Proceeding anyway.",
1492                             format_bytes(fb_available, sizeof(fb_available), available),
1493                             format_bytes(fb_need, sizeof(fb_need), RELOAD_DISK_SPACE_MIN));
1494         }
1495
1496         r = mac_selinux_access_check(message, "reboot", error);
1497         if (r < 0)
1498                 return r;
1499
1500         if (!MANAGER_IS_SYSTEM(m))
1501                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Root switching is only supported by system manager.");
1502
1503         r = sd_bus_message_read(message, "ss", &root, &init);
1504         if (r < 0)
1505                 return r;
1506
1507         if (isempty(root))
1508                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "New root directory may not be the empty string.");
1509         if (!path_is_absolute(root))
1510                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "New root path '%s' is not absolute.", root);
1511         if (path_equal(root, "/"))
1512                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "New root directory cannot be the old root directory.");
1513
1514         /* Safety check */
1515         if (isempty(init)) {
1516                 r = path_is_os_tree(root);
1517                 if (r < 0)
1518                         return sd_bus_error_set_errnof(error, r, "Failed to determine whether root path '%s' contains an OS tree: %m", root);
1519                 if (r == 0)
1520                         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);
1521         } else {
1522                 _cleanup_free_ char *chased = NULL;
1523
1524                 if (!path_is_absolute(init))
1525                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path to init binary '%s' not absolute.", init);
1526
1527                 r = chase_symlinks(init, root, CHASE_PREFIX_ROOT|CHASE_TRAIL_SLASH, &chased);
1528                 if (r < 0)
1529                         return sd_bus_error_set_errnof(error, r, "Could not resolve init executable %s: %m", init);
1530
1531                 if (laccess(chased, X_OK) < 0) {
1532                         if (errno == EACCES)
1533                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Init binary %s is not executable.", init);
1534
1535                         return sd_bus_error_set_errnof(error, r, "Could not check whether init binary %s is executable: %m", init);
1536                 }
1537         }
1538
1539         rt = strdup(root);
1540         if (!rt)
1541                 return -ENOMEM;
1542
1543         if (!isempty(init)) {
1544                 ri = strdup(init);
1545                 if (!ri) {
1546                         free(rt);
1547                         return -ENOMEM;
1548                 }
1549         }
1550
1551         free(m->switch_root);
1552         m->switch_root = rt;
1553
1554         free(m->switch_root_init);
1555         m->switch_root_init = ri;
1556
1557         m->exit_code = MANAGER_SWITCH_ROOT;
1558
1559         return sd_bus_reply_method_return(message, NULL);
1560 }
1561
1562 static int method_set_environment(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1563         _cleanup_strv_free_ char **plus = NULL;
1564         Manager *m = userdata;
1565         int r;
1566
1567         assert(message);
1568         assert(m);
1569
1570         r = mac_selinux_access_check(message, "reload", error);
1571         if (r < 0)
1572                 return r;
1573
1574         r = sd_bus_message_read_strv(message, &plus);
1575         if (r < 0)
1576                 return r;
1577         if (!strv_env_is_valid(plus))
1578                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment assignments");
1579
1580         r = bus_verify_set_environment_async(m, message, error);
1581         if (r < 0)
1582                 return r;
1583         if (r == 0)
1584                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1585
1586         r = manager_environment_add(m, NULL, plus);
1587         if (r < 0)
1588                 return r;
1589
1590         return sd_bus_reply_method_return(message, NULL);
1591 }
1592
1593 static int method_unset_environment(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1594         _cleanup_strv_free_ char **minus = NULL;
1595         Manager *m = userdata;
1596         int r;
1597
1598         assert(message);
1599         assert(m);
1600
1601         r = mac_selinux_access_check(message, "reload", error);
1602         if (r < 0)
1603                 return r;
1604
1605         r = sd_bus_message_read_strv(message, &minus);
1606         if (r < 0)
1607                 return r;
1608
1609         if (!strv_env_name_or_assignment_is_valid(minus))
1610                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment variable names or assignments");
1611
1612         r = bus_verify_set_environment_async(m, message, error);
1613         if (r < 0)
1614                 return r;
1615         if (r == 0)
1616                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1617
1618         r = manager_environment_add(m, minus, NULL);
1619         if (r < 0)
1620                 return r;
1621
1622         return sd_bus_reply_method_return(message, NULL);
1623 }
1624
1625 static int method_unset_and_set_environment(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1626         _cleanup_strv_free_ char **minus = NULL, **plus = NULL;
1627         Manager *m = userdata;
1628         int r;
1629
1630         assert(message);
1631         assert(m);
1632
1633         r = mac_selinux_access_check(message, "reload", error);
1634         if (r < 0)
1635                 return r;
1636
1637         r = sd_bus_message_read_strv(message, &minus);
1638         if (r < 0)
1639                 return r;
1640
1641         r = sd_bus_message_read_strv(message, &plus);
1642         if (r < 0)
1643                 return r;
1644
1645         if (!strv_env_name_or_assignment_is_valid(minus))
1646                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment variable names or assignments");
1647         if (!strv_env_is_valid(plus))
1648                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment assignments");
1649
1650         r = bus_verify_set_environment_async(m, message, error);
1651         if (r < 0)
1652                 return r;
1653         if (r == 0)
1654                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1655
1656         r = manager_environment_add(m, minus, plus);
1657         if (r < 0)
1658                 return r;
1659
1660         return sd_bus_reply_method_return(message, NULL);
1661 }
1662
1663 static int method_set_exit_code(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1664         Manager *m = userdata;
1665         uint8_t code;
1666         int r;
1667
1668         assert(message);
1669         assert(m);
1670
1671         r = mac_selinux_access_check(message, "exit", error);
1672         if (r < 0)
1673                 return r;
1674
1675         r = sd_bus_message_read_basic(message, 'y', &code);
1676         if (r < 0)
1677                 return r;
1678
1679         if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0)
1680                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "ExitCode can only be set for user service managers or in containers.");
1681
1682         m->return_value = code;
1683
1684         return sd_bus_reply_method_return(message, NULL);
1685 }
1686
1687 static int method_lookup_dynamic_user_by_name(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1688         Manager *m = userdata;
1689         const char *name;
1690         uid_t uid;
1691         int r;
1692
1693         assert(message);
1694         assert(m);
1695
1696         r = sd_bus_message_read_basic(message, 's', &name);
1697         if (r < 0)
1698                 return r;
1699
1700         if (!MANAGER_IS_SYSTEM(m))
1701                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Dynamic users are only supported in the system instance.");
1702         if (!valid_user_group_name(name))
1703                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "User name invalid: %s", name);
1704
1705         r = dynamic_user_lookup_name(m, name, &uid);
1706         if (r == -ESRCH)
1707                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_DYNAMIC_USER, "Dynamic user %s does not exist.", name);
1708         if (r < 0)
1709                 return r;
1710
1711         return sd_bus_reply_method_return(message, "u", (uint32_t) uid);
1712 }
1713
1714 static int method_lookup_dynamic_user_by_uid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1715         _cleanup_free_ char *name = NULL;
1716         Manager *m = userdata;
1717         uid_t uid;
1718         int r;
1719
1720         assert(message);
1721         assert(m);
1722
1723         assert_cc(sizeof(uid) == sizeof(uint32_t));
1724         r = sd_bus_message_read_basic(message, 'u', &uid);
1725         if (r < 0)
1726                 return r;
1727
1728         if (!MANAGER_IS_SYSTEM(m))
1729                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Dynamic users are only supported in the system instance.");
1730         if (!uid_is_valid(uid))
1731                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "User ID invalid: " UID_FMT, uid);
1732
1733         r = dynamic_user_lookup_uid(m, uid, &name);
1734         if (r == -ESRCH)
1735                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_DYNAMIC_USER, "Dynamic user ID " UID_FMT " does not exist.", uid);
1736         if (r < 0)
1737                 return r;
1738
1739         return sd_bus_reply_method_return(message, "s", name);
1740 }
1741
1742 static int method_get_dynamic_users(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1743         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1744         Manager *m = userdata;
1745         DynamicUser *d;
1746         Iterator i;
1747         int r;
1748
1749         assert(message);
1750         assert(m);
1751
1752         assert_cc(sizeof(uid_t) == sizeof(uint32_t));
1753
1754         if (!MANAGER_IS_SYSTEM(m))
1755                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Dynamic users are only supported in the system instance.");
1756
1757         r = sd_bus_message_new_method_return(message, &reply);
1758         if (r < 0)
1759                 return r;
1760
1761         r = sd_bus_message_open_container(reply, 'a', "(us)");
1762         if (r < 0)
1763                 return r;
1764
1765         HASHMAP_FOREACH(d, m->dynamic_users, i) {
1766                 uid_t uid;
1767
1768                 r = dynamic_user_current(d, &uid);
1769                 if (r == -EAGAIN) /* not realized yet? */
1770                         continue;
1771                 if (r < 0)
1772                         return sd_bus_error_setf(error, SD_BUS_ERROR_FAILED, "Failed to lookup a dynamic user.");
1773
1774                 r = sd_bus_message_append(reply, "(us)", uid, d->name);
1775                 if (r < 0)
1776                         return r;
1777         }
1778
1779         r = sd_bus_message_close_container(reply);
1780         if (r < 0)
1781                 return r;
1782
1783         return sd_bus_send(NULL, reply, NULL);
1784 }
1785
1786 static int list_unit_files_by_patterns(sd_bus_message *message, void *userdata, sd_bus_error *error, char **states, char **patterns) {
1787         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1788         Manager *m = userdata;
1789         UnitFileList *item;
1790         Hashmap *h;
1791         Iterator i;
1792         int r;
1793
1794         assert(message);
1795         assert(m);
1796
1797         /* Anyone can call this method */
1798
1799         r = mac_selinux_access_check(message, "status", error);
1800         if (r < 0)
1801                 return r;
1802
1803         r = sd_bus_message_new_method_return(message, &reply);
1804         if (r < 0)
1805                 return r;
1806
1807         h = hashmap_new(&string_hash_ops);
1808         if (!h)
1809                 return -ENOMEM;
1810
1811         r = unit_file_get_list(m->unit_file_scope, NULL, h, states, patterns);
1812         if (r < 0)
1813                 goto fail;
1814
1815         r = sd_bus_message_open_container(reply, 'a', "(ss)");
1816         if (r < 0)
1817                 goto fail;
1818
1819         HASHMAP_FOREACH(item, h, i) {
1820
1821                 r = sd_bus_message_append(reply, "(ss)", item->path, unit_file_state_to_string(item->state));
1822                 if (r < 0)
1823                         goto fail;
1824         }
1825
1826         unit_file_list_free(h);
1827
1828         r = sd_bus_message_close_container(reply);
1829         if (r < 0)
1830                 return r;
1831
1832         return sd_bus_send(NULL, reply, NULL);
1833
1834 fail:
1835         unit_file_list_free(h);
1836         return r;
1837 }
1838
1839 static int method_list_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1840         return list_unit_files_by_patterns(message, userdata, error, NULL, NULL);
1841 }
1842
1843 static int method_list_unit_files_by_patterns(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1844         _cleanup_strv_free_ char **states = NULL;
1845         _cleanup_strv_free_ char **patterns = NULL;
1846         int r;
1847
1848         r = sd_bus_message_read_strv(message, &states);
1849         if (r < 0)
1850                 return r;
1851
1852         r = sd_bus_message_read_strv(message, &patterns);
1853         if (r < 0)
1854                 return r;
1855
1856         return list_unit_files_by_patterns(message, userdata, error, states, patterns);
1857 }
1858
1859 static int method_get_unit_file_state(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1860         Manager *m = userdata;
1861         const char *name;
1862         UnitFileState state;
1863         int r;
1864
1865         assert(message);
1866         assert(m);
1867
1868         /* Anyone can call this method */
1869
1870         r = mac_selinux_access_check(message, "status", error);
1871         if (r < 0)
1872                 return r;
1873
1874         r = sd_bus_message_read(message, "s", &name);
1875         if (r < 0)
1876                 return r;
1877
1878         r = unit_file_get_state(m->unit_file_scope, NULL, name, &state);
1879         if (r < 0)
1880                 return r;
1881
1882         return sd_bus_reply_method_return(message, "s", unit_file_state_to_string(state));
1883 }
1884
1885 static int method_get_default_target(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1886         _cleanup_free_ char *default_target = NULL;
1887         Manager *m = userdata;
1888         int r;
1889
1890         assert(message);
1891         assert(m);
1892
1893         /* Anyone can call this method */
1894
1895         r = mac_selinux_access_check(message, "status", error);
1896         if (r < 0)
1897                 return r;
1898
1899         r = unit_file_get_default(m->unit_file_scope, NULL, &default_target);
1900         if (r < 0)
1901                 return r;
1902
1903         return sd_bus_reply_method_return(message, "s", default_target);
1904 }
1905
1906 static int send_unit_files_changed(sd_bus *bus, void *userdata) {
1907         _cleanup_(sd_bus_message_unrefp) sd_bus_message *message = NULL;
1908         int r;
1909
1910         assert(bus);
1911
1912         r = sd_bus_message_new_signal(bus, &message, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "UnitFilesChanged");
1913         if (r < 0)
1914                 return r;
1915
1916         return sd_bus_send(bus, message, NULL);
1917 }
1918
1919 /* Create an error reply, using the error information from changes[]
1920  * if possible, and fall back to generating an error from error code c.
1921  * The error message only describes the first error.
1922  *
1923  * Coordinate with unit_file_dump_changes() in install.c.
1924  */
1925 static int install_error(
1926                 sd_bus_error *error,
1927                 int c,
1928                 UnitFileChange *changes,
1929                 size_t n_changes) {
1930
1931         size_t i;
1932         int r;
1933
1934         for (i = 0; i < n_changes; i++)
1935
1936                 switch(changes[i].type) {
1937
1938                 case 0 ... INT_MAX:
1939                         continue;
1940
1941                 case -EEXIST:
1942                         if (changes[i].source)
1943                                 r = sd_bus_error_setf(error, BUS_ERROR_UNIT_EXISTS,
1944                                                       "File %s already exists and is a symlink to %s.",
1945                                                       changes[i].path, changes[i].source);
1946                         else
1947                                 r = sd_bus_error_setf(error, BUS_ERROR_UNIT_EXISTS,
1948                                                       "File %s already exists.",
1949                                                       changes[i].path);
1950                         goto found;
1951
1952                 case -ERFKILL:
1953                         r = sd_bus_error_setf(error, BUS_ERROR_UNIT_MASKED,
1954                                               "Unit file %s is masked.", changes[i].path);
1955                         goto found;
1956
1957                 case -EADDRNOTAVAIL:
1958                         r = sd_bus_error_setf(error, BUS_ERROR_UNIT_GENERATED,
1959                                               "Unit %s is transient or generated.", changes[i].path);
1960                         goto found;
1961
1962                 case -ELOOP:
1963                         r = sd_bus_error_setf(error, BUS_ERROR_UNIT_LINKED,
1964                                               "Refusing to operate on linked unit file %s", changes[i].path);
1965                         goto found;
1966
1967                 case -ENOENT:
1968                         r = sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit file %s does not exist.", changes[i].path);
1969                         goto found;
1970
1971                 default:
1972                         r = sd_bus_error_set_errnof(error, changes[i].type, "File %s: %m", changes[i].path);
1973                         goto found;
1974                 }
1975
1976         r = c < 0 ? c : -EINVAL;
1977
1978  found:
1979         unit_file_changes_free(changes, n_changes);
1980         return r;
1981 }
1982
1983 static int reply_unit_file_changes_and_free(
1984                 Manager *m,
1985                 sd_bus_message *message,
1986                 int carries_install_info,
1987                 UnitFileChange *changes,
1988                 size_t n_changes,
1989                 sd_bus_error *error) {
1990
1991         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1992         bool bad = false, good = false;
1993         size_t i;
1994         int r;
1995
1996         if (unit_file_changes_have_modification(changes, n_changes)) {
1997                 r = bus_foreach_bus(m, NULL, send_unit_files_changed, NULL);
1998                 if (r < 0)
1999                         log_debug_errno(r, "Failed to send UnitFilesChanged signal: %m");
2000         }
2001
2002         r = sd_bus_message_new_method_return(message, &reply);
2003         if (r < 0)
2004                 goto fail;
2005
2006         if (carries_install_info >= 0) {
2007                 r = sd_bus_message_append(reply, "b", carries_install_info);
2008                 if (r < 0)
2009                         goto fail;
2010         }
2011
2012         r = sd_bus_message_open_container(reply, 'a', "(sss)");
2013         if (r < 0)
2014                 goto fail;
2015
2016         for (i = 0; i < n_changes; i++) {
2017
2018                 if (changes[i].type < 0) {
2019                         bad = true;
2020                         continue;
2021                 }
2022
2023                 r = sd_bus_message_append(
2024                                 reply, "(sss)",
2025                                 unit_file_change_type_to_string(changes[i].type),
2026                                 changes[i].path,
2027                                 changes[i].source);
2028                 if (r < 0)
2029                         goto fail;
2030
2031                 good = true;
2032         }
2033
2034         /* If there was a failed change, and no successful change, then return the first failure as proper method call
2035          * error. */
2036         if (bad && !good)
2037                 return install_error(error, 0, changes, n_changes);
2038
2039         r = sd_bus_message_close_container(reply);
2040         if (r < 0)
2041                 goto fail;
2042
2043         unit_file_changes_free(changes, n_changes);
2044         return sd_bus_send(NULL, reply, NULL);
2045
2046 fail:
2047         unit_file_changes_free(changes, n_changes);
2048         return r;
2049 }
2050
2051 static int method_enable_unit_files_generic(
2052                 sd_bus_message *message,
2053                 Manager *m,
2054                 int (*call)(UnitFileScope scope, UnitFileFlags flags, const char *root_dir, char *files[], UnitFileChange **changes, size_t *n_changes),
2055                 bool carries_install_info,
2056                 sd_bus_error *error) {
2057
2058         _cleanup_strv_free_ char **l = NULL;
2059         UnitFileChange *changes = NULL;
2060         size_t n_changes = 0;
2061         UnitFileFlags flags;
2062         int runtime, force, r;
2063
2064         assert(message);
2065         assert(m);
2066
2067         r = sd_bus_message_read_strv(message, &l);
2068         if (r < 0)
2069                 return r;
2070
2071         r = sd_bus_message_read(message, "bb", &runtime, &force);
2072         if (r < 0)
2073                 return r;
2074
2075         flags = unit_file_bools_to_flags(runtime, force);
2076
2077         r = bus_verify_manage_unit_files_async(m, message, error);
2078         if (r < 0)
2079                 return r;
2080         if (r == 0)
2081                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2082
2083         r = call(m->unit_file_scope, flags, NULL, l, &changes, &n_changes);
2084         if (r < 0)
2085                 return install_error(error, r, changes, n_changes);
2086
2087         return reply_unit_file_changes_and_free(m, message, carries_install_info ? r : -1, changes, n_changes, error);
2088 }
2089
2090 static int method_enable_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2091         return method_enable_unit_files_generic(message, userdata, unit_file_enable, true, error);
2092 }
2093
2094 static int method_reenable_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2095         return method_enable_unit_files_generic(message, userdata, unit_file_reenable, true, error);
2096 }
2097
2098 static int method_link_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2099         return method_enable_unit_files_generic(message, userdata, unit_file_link, false, error);
2100 }
2101
2102 static int unit_file_preset_without_mode(UnitFileScope scope, UnitFileFlags flags, const char *root_dir, char **files, UnitFileChange **changes, size_t *n_changes) {
2103         return unit_file_preset(scope, flags, root_dir, files, UNIT_FILE_PRESET_FULL, changes, n_changes);
2104 }
2105
2106 static int method_preset_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2107         return method_enable_unit_files_generic(message, userdata, unit_file_preset_without_mode, true, error);
2108 }
2109
2110 static int method_mask_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2111         return method_enable_unit_files_generic(message, userdata, unit_file_mask, false, error);
2112 }
2113
2114 static int method_preset_unit_files_with_mode(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2115
2116         _cleanup_strv_free_ char **l = NULL;
2117         UnitFileChange *changes = NULL;
2118         size_t n_changes = 0;
2119         Manager *m = userdata;
2120         UnitFilePresetMode mm;
2121         int runtime, force, r;
2122         UnitFileFlags flags;
2123         const char *mode;
2124
2125         assert(message);
2126         assert(m);
2127
2128         r = sd_bus_message_read_strv(message, &l);
2129         if (r < 0)
2130                 return r;
2131
2132         r = sd_bus_message_read(message, "sbb", &mode, &runtime, &force);
2133         if (r < 0)
2134                 return r;
2135
2136         flags = unit_file_bools_to_flags(runtime, force);
2137
2138         if (isempty(mode))
2139                 mm = UNIT_FILE_PRESET_FULL;
2140         else {
2141                 mm = unit_file_preset_mode_from_string(mode);
2142                 if (mm < 0)
2143                         return -EINVAL;
2144         }
2145
2146         r = bus_verify_manage_unit_files_async(m, message, error);
2147         if (r < 0)
2148                 return r;
2149         if (r == 0)
2150                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2151
2152         r = unit_file_preset(m->unit_file_scope, flags, NULL, l, mm, &changes, &n_changes);
2153         if (r < 0)
2154                 return install_error(error, r, changes, n_changes);
2155
2156         return reply_unit_file_changes_and_free(m, message, r, changes, n_changes, error);
2157 }
2158
2159 static int method_disable_unit_files_generic(
2160                 sd_bus_message *message,
2161                 Manager *m,
2162                 int (*call)(UnitFileScope scope, UnitFileFlags flags, const char *root_dir, char *files[], UnitFileChange **changes, size_t *n_changes),
2163                 sd_bus_error *error) {
2164
2165         _cleanup_strv_free_ char **l = NULL;
2166         UnitFileChange *changes = NULL;
2167         size_t n_changes = 0;
2168         int r, runtime;
2169
2170         assert(message);
2171         assert(m);
2172
2173         r = sd_bus_message_read_strv(message, &l);
2174         if (r < 0)
2175                 return r;
2176
2177         r = sd_bus_message_read(message, "b", &runtime);
2178         if (r < 0)
2179                 return r;
2180
2181         r = bus_verify_manage_unit_files_async(m, message, error);
2182         if (r < 0)
2183                 return r;
2184         if (r == 0)
2185                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2186
2187         r = call(m->unit_file_scope, runtime ? UNIT_FILE_RUNTIME : 0, NULL, l, &changes, &n_changes);
2188         if (r < 0)
2189                 return install_error(error, r, changes, n_changes);
2190
2191         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2192 }
2193
2194 static int method_disable_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2195         return method_disable_unit_files_generic(message, userdata, unit_file_disable, error);
2196 }
2197
2198 static int method_unmask_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2199         return method_disable_unit_files_generic(message, userdata, unit_file_unmask, error);
2200 }
2201
2202 static int method_revert_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2203         _cleanup_strv_free_ char **l = NULL;
2204         UnitFileChange *changes = NULL;
2205         size_t n_changes = 0;
2206         Manager *m = userdata;
2207         int r;
2208
2209         assert(message);
2210         assert(m);
2211
2212         r = sd_bus_message_read_strv(message, &l);
2213         if (r < 0)
2214                 return r;
2215
2216         r = bus_verify_manage_unit_files_async(m, message, error);
2217         if (r < 0)
2218                 return r;
2219         if (r == 0)
2220                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2221
2222         r = unit_file_revert(m->unit_file_scope, NULL, l, &changes, &n_changes);
2223         if (r < 0)
2224                 return install_error(error, r, changes, n_changes);
2225
2226         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2227 }
2228
2229 static int method_set_default_target(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2230         UnitFileChange *changes = NULL;
2231         size_t n_changes = 0;
2232         Manager *m = userdata;
2233         const char *name;
2234         int force, r;
2235
2236         assert(message);
2237         assert(m);
2238
2239         r = mac_selinux_access_check(message, "enable", error);
2240         if (r < 0)
2241                 return r;
2242
2243         r = sd_bus_message_read(message, "sb", &name, &force);
2244         if (r < 0)
2245                 return r;
2246
2247         r = bus_verify_manage_unit_files_async(m, message, error);
2248         if (r < 0)
2249                 return r;
2250         if (r == 0)
2251                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2252
2253         r = unit_file_set_default(m->unit_file_scope, force ? UNIT_FILE_FORCE : 0, NULL, name, &changes, &n_changes);
2254         if (r < 0)
2255                 return install_error(error, r, changes, n_changes);
2256
2257         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2258 }
2259
2260 static int method_preset_all_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2261         UnitFileChange *changes = NULL;
2262         size_t n_changes = 0;
2263         Manager *m = userdata;
2264         UnitFilePresetMode mm;
2265         const char *mode;
2266         UnitFileFlags flags;
2267         int force, runtime, r;
2268
2269         assert(message);
2270         assert(m);
2271
2272         r = mac_selinux_access_check(message, "enable", error);
2273         if (r < 0)
2274                 return r;
2275
2276         r = sd_bus_message_read(message, "sbb", &mode, &runtime, &force);
2277         if (r < 0)
2278                 return r;
2279
2280         flags = unit_file_bools_to_flags(runtime, force);
2281
2282         if (isempty(mode))
2283                 mm = UNIT_FILE_PRESET_FULL;
2284         else {
2285                 mm = unit_file_preset_mode_from_string(mode);
2286                 if (mm < 0)
2287                         return -EINVAL;
2288         }
2289
2290         r = bus_verify_manage_unit_files_async(m, message, error);
2291         if (r < 0)
2292                 return r;
2293         if (r == 0)
2294                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2295
2296         r = unit_file_preset_all(m->unit_file_scope, flags, NULL, mm, &changes, &n_changes);
2297         if (r < 0)
2298                 return install_error(error, r, changes, n_changes);
2299
2300         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2301 }
2302
2303 static int method_add_dependency_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2304         _cleanup_strv_free_ char **l = NULL;
2305         Manager *m = userdata;
2306         UnitFileChange *changes = NULL;
2307         size_t n_changes = 0;
2308         int runtime, force, r;
2309         char *target, *type;
2310         UnitDependency dep;
2311         UnitFileFlags flags;
2312
2313         assert(message);
2314         assert(m);
2315
2316         r = bus_verify_manage_unit_files_async(m, message, error);
2317         if (r < 0)
2318                 return r;
2319         if (r == 0)
2320                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2321
2322         r = sd_bus_message_read_strv(message, &l);
2323         if (r < 0)
2324                 return r;
2325
2326         r = sd_bus_message_read(message, "ssbb", &target, &type, &runtime, &force);
2327         if (r < 0)
2328                 return r;
2329
2330         flags = unit_file_bools_to_flags(runtime, force);
2331
2332         dep = unit_dependency_from_string(type);
2333         if (dep < 0)
2334                 return -EINVAL;
2335
2336         r = unit_file_add_dependency(m->unit_file_scope, flags, NULL, l, target, dep, &changes, &n_changes);
2337         if (r < 0)
2338                 return install_error(error, r, changes, n_changes);
2339
2340         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2341 }
2342
2343 static int method_get_unit_file_links(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2344         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
2345         UnitFileChange *changes = NULL;
2346         size_t n_changes = 0, i;
2347         UnitFileFlags flags;
2348         const char *name;
2349         char **p;
2350         int runtime, r;
2351
2352         r = sd_bus_message_read(message, "sb", &name, &runtime);
2353         if (r < 0)
2354                 return r;
2355
2356         r = sd_bus_message_new_method_return(message, &reply);
2357         if (r < 0)
2358                 return r;
2359
2360         r = sd_bus_message_open_container(reply, SD_BUS_TYPE_ARRAY, "s");
2361         if (r < 0)
2362                 return r;
2363
2364         p = STRV_MAKE(name);
2365         flags = UNIT_FILE_DRY_RUN |
2366                 (runtime ? UNIT_FILE_RUNTIME : 0);
2367
2368         r = unit_file_disable(UNIT_FILE_SYSTEM, flags, NULL, p, &changes, &n_changes);
2369         if (r < 0)
2370                 return log_error_errno(r, "Failed to get file links for %s: %m", name);
2371
2372         for (i = 0; i < n_changes; i++)
2373                 if (changes[i].type == UNIT_FILE_UNLINK) {
2374                         r = sd_bus_message_append(reply, "s", changes[i].path);
2375                         if (r < 0)
2376                                 return r;
2377                 }
2378
2379         r = sd_bus_message_close_container(reply);
2380         if (r < 0)
2381                 return r;
2382
2383         return sd_bus_send(NULL, reply, NULL);
2384 }
2385
2386 static int method_get_job_waiting(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2387         Manager *m = userdata;
2388         uint32_t id;
2389         Job *j;
2390         int r;
2391
2392         assert(message);
2393         assert(m);
2394
2395         r = sd_bus_message_read(message, "u", &id);
2396         if (r < 0)
2397                 return r;
2398
2399         j = manager_get_job(m, id);
2400         if (!j)
2401                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
2402
2403         return bus_job_method_get_waiting_jobs(message, j, error);
2404 }
2405
2406 const sd_bus_vtable bus_manager_vtable[] = {
2407         SD_BUS_VTABLE_START(0),
2408
2409         SD_BUS_PROPERTY("Version", "s", property_get_version, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2410         SD_BUS_PROPERTY("Features", "s", property_get_features, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2411         SD_BUS_PROPERTY("Virtualization", "s", property_get_virtualization, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2412         SD_BUS_PROPERTY("Architecture", "s", property_get_architecture, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2413         SD_BUS_PROPERTY("Tainted", "s", property_get_tainted, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2414         BUS_PROPERTY_DUAL_TIMESTAMP("FirmwareTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_FIRMWARE]), SD_BUS_VTABLE_PROPERTY_CONST),
2415         BUS_PROPERTY_DUAL_TIMESTAMP("LoaderTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_LOADER]), SD_BUS_VTABLE_PROPERTY_CONST),
2416         BUS_PROPERTY_DUAL_TIMESTAMP("KernelTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_KERNEL]), SD_BUS_VTABLE_PROPERTY_CONST),
2417         BUS_PROPERTY_DUAL_TIMESTAMP("InitRDTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_INITRD]), SD_BUS_VTABLE_PROPERTY_CONST),
2418         BUS_PROPERTY_DUAL_TIMESTAMP("UserspaceTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_USERSPACE]), SD_BUS_VTABLE_PROPERTY_CONST),
2419         BUS_PROPERTY_DUAL_TIMESTAMP("FinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2420         BUS_PROPERTY_DUAL_TIMESTAMP("SecurityStartTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_SECURITY_START]), SD_BUS_VTABLE_PROPERTY_CONST),
2421         BUS_PROPERTY_DUAL_TIMESTAMP("SecurityFinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_SECURITY_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2422         BUS_PROPERTY_DUAL_TIMESTAMP("GeneratorsStartTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_GENERATORS_START]), SD_BUS_VTABLE_PROPERTY_CONST),
2423         BUS_PROPERTY_DUAL_TIMESTAMP("GeneratorsFinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_GENERATORS_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2424         BUS_PROPERTY_DUAL_TIMESTAMP("UnitsLoadStartTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_UNITS_LOAD_START]), SD_BUS_VTABLE_PROPERTY_CONST),
2425         BUS_PROPERTY_DUAL_TIMESTAMP("UnitsLoadFinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_UNITS_LOAD_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2426         SD_BUS_WRITABLE_PROPERTY("LogLevel", "s", property_get_log_level, property_set_log_level, 0, 0),
2427         SD_BUS_WRITABLE_PROPERTY("LogTarget", "s", property_get_log_target, property_set_log_target, 0, 0),
2428         SD_BUS_PROPERTY("NNames", "u", property_get_hashmap_size, offsetof(Manager, units), 0),
2429         SD_BUS_PROPERTY("NFailedUnits", "u", property_get_set_size, offsetof(Manager, failed_units), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
2430         SD_BUS_PROPERTY("NJobs", "u", property_get_hashmap_size, offsetof(Manager, jobs), 0),
2431         SD_BUS_PROPERTY("NInstalledJobs", "u", bus_property_get_unsigned, offsetof(Manager, n_installed_jobs), 0),
2432         SD_BUS_PROPERTY("NFailedJobs", "u", bus_property_get_unsigned, offsetof(Manager, n_failed_jobs), 0),
2433         SD_BUS_PROPERTY("Progress", "d", property_get_progress, 0, 0),
2434         SD_BUS_PROPERTY("Environment", "as", NULL, offsetof(Manager, environment), 0),
2435         SD_BUS_PROPERTY("ConfirmSpawn", "b", bus_property_get_bool, offsetof(Manager, confirm_spawn), SD_BUS_VTABLE_PROPERTY_CONST),
2436         SD_BUS_PROPERTY("ShowStatus", "b", property_get_show_status, 0, 0),
2437         SD_BUS_PROPERTY("UnitPath", "as", NULL, offsetof(Manager, lookup_paths.search_path), SD_BUS_VTABLE_PROPERTY_CONST),
2438         SD_BUS_PROPERTY("DefaultStandardOutput", "s", bus_property_get_exec_output, offsetof(Manager, default_std_output), SD_BUS_VTABLE_PROPERTY_CONST),
2439         SD_BUS_PROPERTY("DefaultStandardError", "s", bus_property_get_exec_output, offsetof(Manager, default_std_output), SD_BUS_VTABLE_PROPERTY_CONST),
2440         SD_BUS_WRITABLE_PROPERTY("RuntimeWatchdogUSec", "t", bus_property_get_usec, property_set_runtime_watchdog, offsetof(Manager, runtime_watchdog), 0),
2441         SD_BUS_WRITABLE_PROPERTY("ShutdownWatchdogUSec", "t", bus_property_get_usec, bus_property_set_usec, offsetof(Manager, shutdown_watchdog), 0),
2442         SD_BUS_WRITABLE_PROPERTY("ServiceWatchdogs", "b", bus_property_get_bool, bus_property_set_bool, offsetof(Manager, service_watchdogs), 0),
2443         SD_BUS_PROPERTY("ControlGroup", "s", NULL, offsetof(Manager, cgroup_root), 0),
2444         SD_BUS_PROPERTY("SystemState", "s", property_get_system_state, 0, 0),
2445         SD_BUS_PROPERTY("ExitCode", "y", bus_property_get_unsigned, offsetof(Manager, return_value), 0),
2446         SD_BUS_PROPERTY("DefaultTimerAccuracyUSec", "t", bus_property_get_usec, offsetof(Manager, default_timer_accuracy_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2447         SD_BUS_PROPERTY("DefaultTimeoutStartUSec", "t", bus_property_get_usec, offsetof(Manager, default_timeout_start_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2448         SD_BUS_PROPERTY("DefaultTimeoutStopUSec", "t", bus_property_get_usec, offsetof(Manager, default_timeout_stop_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2449         SD_BUS_PROPERTY("DefaultRestartUSec", "t", bus_property_get_usec, offsetof(Manager, default_restart_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2450         SD_BUS_PROPERTY("DefaultStartLimitIntervalUSec", "t", bus_property_get_usec, offsetof(Manager, default_start_limit_interval), SD_BUS_VTABLE_PROPERTY_CONST),
2451         /* The following two items are obsolete alias */
2452         SD_BUS_PROPERTY("DefaultStartLimitIntervalSec", "t", bus_property_get_usec, offsetof(Manager, default_start_limit_interval), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
2453         SD_BUS_PROPERTY("DefaultStartLimitInterval", "t", bus_property_get_usec, offsetof(Manager, default_start_limit_interval), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
2454         SD_BUS_PROPERTY("DefaultStartLimitBurst", "u", bus_property_get_unsigned, offsetof(Manager, default_start_limit_burst), SD_BUS_VTABLE_PROPERTY_CONST),
2455         SD_BUS_PROPERTY("DefaultCPUAccounting", "b", bus_property_get_bool, offsetof(Manager, default_cpu_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
2456         SD_BUS_PROPERTY("DefaultBlockIOAccounting", "b", bus_property_get_bool, offsetof(Manager, default_blockio_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
2457         SD_BUS_PROPERTY("DefaultMemoryAccounting", "b", bus_property_get_bool, offsetof(Manager, default_memory_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
2458         SD_BUS_PROPERTY("DefaultTasksAccounting", "b", bus_property_get_bool, offsetof(Manager, default_tasks_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
2459         SD_BUS_PROPERTY("DefaultLimitCPU", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CPU]), SD_BUS_VTABLE_PROPERTY_CONST),
2460         SD_BUS_PROPERTY("DefaultLimitCPUSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CPU]), SD_BUS_VTABLE_PROPERTY_CONST),
2461         SD_BUS_PROPERTY("DefaultLimitFSIZE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_FSIZE]), SD_BUS_VTABLE_PROPERTY_CONST),
2462         SD_BUS_PROPERTY("DefaultLimitFSIZESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_FSIZE]), SD_BUS_VTABLE_PROPERTY_CONST),
2463         SD_BUS_PROPERTY("DefaultLimitDATA", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_DATA]), SD_BUS_VTABLE_PROPERTY_CONST),
2464         SD_BUS_PROPERTY("DefaultLimitDATASoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_DATA]), SD_BUS_VTABLE_PROPERTY_CONST),
2465         SD_BUS_PROPERTY("DefaultLimitSTACK", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_STACK]), SD_BUS_VTABLE_PROPERTY_CONST),
2466         SD_BUS_PROPERTY("DefaultLimitSTACKSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_STACK]), SD_BUS_VTABLE_PROPERTY_CONST),
2467         SD_BUS_PROPERTY("DefaultLimitCORE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CORE]), SD_BUS_VTABLE_PROPERTY_CONST),
2468         SD_BUS_PROPERTY("DefaultLimitCORESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CORE]), SD_BUS_VTABLE_PROPERTY_CONST),
2469         SD_BUS_PROPERTY("DefaultLimitRSS", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RSS]), SD_BUS_VTABLE_PROPERTY_CONST),
2470         SD_BUS_PROPERTY("DefaultLimitRSSSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RSS]), SD_BUS_VTABLE_PROPERTY_CONST),
2471         SD_BUS_PROPERTY("DefaultLimitNOFILE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NOFILE]), SD_BUS_VTABLE_PROPERTY_CONST),
2472         SD_BUS_PROPERTY("DefaultLimitNOFILESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NOFILE]), SD_BUS_VTABLE_PROPERTY_CONST),
2473         SD_BUS_PROPERTY("DefaultLimitAS", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_AS]), SD_BUS_VTABLE_PROPERTY_CONST),
2474         SD_BUS_PROPERTY("DefaultLimitASSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_AS]), SD_BUS_VTABLE_PROPERTY_CONST),
2475         SD_BUS_PROPERTY("DefaultLimitNPROC", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NPROC]), SD_BUS_VTABLE_PROPERTY_CONST),
2476         SD_BUS_PROPERTY("DefaultLimitNPROCSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NPROC]), SD_BUS_VTABLE_PROPERTY_CONST),
2477         SD_BUS_PROPERTY("DefaultLimitMEMLOCK", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MEMLOCK]), SD_BUS_VTABLE_PROPERTY_CONST),
2478         SD_BUS_PROPERTY("DefaultLimitMEMLOCKSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MEMLOCK]), SD_BUS_VTABLE_PROPERTY_CONST),
2479         SD_BUS_PROPERTY("DefaultLimitLOCKS", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_LOCKS]), SD_BUS_VTABLE_PROPERTY_CONST),
2480         SD_BUS_PROPERTY("DefaultLimitLOCKSSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_LOCKS]), SD_BUS_VTABLE_PROPERTY_CONST),
2481         SD_BUS_PROPERTY("DefaultLimitSIGPENDING", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_SIGPENDING]), SD_BUS_VTABLE_PROPERTY_CONST),
2482         SD_BUS_PROPERTY("DefaultLimitSIGPENDINGSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_SIGPENDING]), SD_BUS_VTABLE_PROPERTY_CONST),
2483         SD_BUS_PROPERTY("DefaultLimitMSGQUEUE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MSGQUEUE]), SD_BUS_VTABLE_PROPERTY_CONST),
2484         SD_BUS_PROPERTY("DefaultLimitMSGQUEUESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MSGQUEUE]), SD_BUS_VTABLE_PROPERTY_CONST),
2485         SD_BUS_PROPERTY("DefaultLimitNICE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NICE]), SD_BUS_VTABLE_PROPERTY_CONST),
2486         SD_BUS_PROPERTY("DefaultLimitNICESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NICE]), SD_BUS_VTABLE_PROPERTY_CONST),
2487         SD_BUS_PROPERTY("DefaultLimitRTPRIO", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTPRIO]), SD_BUS_VTABLE_PROPERTY_CONST),
2488         SD_BUS_PROPERTY("DefaultLimitRTPRIOSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTPRIO]), SD_BUS_VTABLE_PROPERTY_CONST),
2489         SD_BUS_PROPERTY("DefaultLimitRTTIME", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTTIME]), SD_BUS_VTABLE_PROPERTY_CONST),
2490         SD_BUS_PROPERTY("DefaultLimitRTTIMESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTTIME]), SD_BUS_VTABLE_PROPERTY_CONST),
2491         SD_BUS_PROPERTY("DefaultTasksMax", "t", NULL, offsetof(Manager, default_tasks_max), SD_BUS_VTABLE_PROPERTY_CONST),
2492         SD_BUS_PROPERTY("TimerSlackNSec", "t", property_get_timer_slack_nsec, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2493
2494         SD_BUS_METHOD("GetUnit", "s", "o", method_get_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2495         SD_BUS_METHOD("GetUnitByPID", "u", "o", method_get_unit_by_pid, SD_BUS_VTABLE_UNPRIVILEGED),
2496         SD_BUS_METHOD("GetUnitByInvocationID", "ay", "o", method_get_unit_by_invocation_id, SD_BUS_VTABLE_UNPRIVILEGED),
2497         SD_BUS_METHOD("GetUnitByControlGroup", "s", "o", method_get_unit_by_control_group, SD_BUS_VTABLE_UNPRIVILEGED),
2498         SD_BUS_METHOD("LoadUnit", "s", "o", method_load_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2499         SD_BUS_METHOD("StartUnit", "ss", "o", method_start_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2500         SD_BUS_METHOD("StartUnitReplace", "sss", "o", method_start_unit_replace, SD_BUS_VTABLE_UNPRIVILEGED),
2501         SD_BUS_METHOD("StopUnit", "ss", "o", method_stop_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2502         SD_BUS_METHOD("ReloadUnit", "ss", "o", method_reload_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2503         SD_BUS_METHOD("RestartUnit", "ss", "o", method_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2504         SD_BUS_METHOD("TryRestartUnit", "ss", "o", method_try_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2505         SD_BUS_METHOD("ReloadOrRestartUnit", "ss", "o", method_reload_or_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2506         SD_BUS_METHOD("ReloadOrTryRestartUnit", "ss", "o", method_reload_or_try_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2507         SD_BUS_METHOD("KillUnit", "ssi", NULL, method_kill_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2508         SD_BUS_METHOD("ResetFailedUnit", "s", NULL, method_reset_failed_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2509         SD_BUS_METHOD("SetUnitProperties", "sba(sv)", NULL, method_set_unit_properties, SD_BUS_VTABLE_UNPRIVILEGED),
2510         SD_BUS_METHOD("RefUnit", "s", NULL, method_ref_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2511         SD_BUS_METHOD("UnrefUnit", "s", NULL, method_unref_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2512         SD_BUS_METHOD("StartTransientUnit", "ssa(sv)a(sa(sv))", "o", method_start_transient_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2513         SD_BUS_METHOD("GetUnitProcesses", "s", "a(sus)", method_get_unit_processes, SD_BUS_VTABLE_UNPRIVILEGED),
2514         SD_BUS_METHOD("AttachProcessesToUnit", "ssau", NULL, method_attach_processes_to_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2515         SD_BUS_METHOD("GetJob", "u", "o", method_get_job, SD_BUS_VTABLE_UNPRIVILEGED),
2516         SD_BUS_METHOD("GetJobAfter", "u", "a(usssoo)", method_get_job_waiting, SD_BUS_VTABLE_UNPRIVILEGED),
2517         SD_BUS_METHOD("GetJobBefore", "u", "a(usssoo)", method_get_job_waiting, SD_BUS_VTABLE_UNPRIVILEGED),
2518         SD_BUS_METHOD("CancelJob", "u", NULL, method_cancel_job, SD_BUS_VTABLE_UNPRIVILEGED),
2519         SD_BUS_METHOD("ClearJobs", NULL, NULL, method_clear_jobs, SD_BUS_VTABLE_UNPRIVILEGED),
2520         SD_BUS_METHOD("ResetFailed", NULL, NULL, method_reset_failed, SD_BUS_VTABLE_UNPRIVILEGED),
2521         SD_BUS_METHOD("ListUnits", NULL, "a(ssssssouso)", method_list_units, SD_BUS_VTABLE_UNPRIVILEGED),
2522         SD_BUS_METHOD("ListUnitsFiltered", "as", "a(ssssssouso)", method_list_units_filtered, SD_BUS_VTABLE_UNPRIVILEGED),
2523         SD_BUS_METHOD("ListUnitsByPatterns", "asas", "a(ssssssouso)", method_list_units_by_patterns, SD_BUS_VTABLE_UNPRIVILEGED),
2524         SD_BUS_METHOD("ListUnitsByNames", "as", "a(ssssssouso)", method_list_units_by_names, SD_BUS_VTABLE_UNPRIVILEGED),
2525         SD_BUS_METHOD("ListJobs", NULL, "a(usssoo)", method_list_jobs, SD_BUS_VTABLE_UNPRIVILEGED),
2526         SD_BUS_METHOD("Subscribe", NULL, NULL, method_subscribe, SD_BUS_VTABLE_UNPRIVILEGED),
2527         SD_BUS_METHOD("Unsubscribe", NULL, NULL, method_unsubscribe, SD_BUS_VTABLE_UNPRIVILEGED),
2528         SD_BUS_METHOD("Dump", NULL, "s", method_dump, SD_BUS_VTABLE_UNPRIVILEGED),
2529         SD_BUS_METHOD("DumpByFileDescriptor", NULL, "h", method_dump_by_fd, SD_BUS_VTABLE_UNPRIVILEGED),
2530         SD_BUS_METHOD("CreateSnapshot", "sb", "o", method_refuse_snapshot, SD_BUS_VTABLE_UNPRIVILEGED|SD_BUS_VTABLE_HIDDEN),
2531         SD_BUS_METHOD("RemoveSnapshot", "s", NULL, method_refuse_snapshot, SD_BUS_VTABLE_UNPRIVILEGED|SD_BUS_VTABLE_HIDDEN),
2532         SD_BUS_METHOD("Reload", NULL, NULL, method_reload, SD_BUS_VTABLE_UNPRIVILEGED),
2533         SD_BUS_METHOD("Reexecute", NULL, NULL, method_reexecute, SD_BUS_VTABLE_UNPRIVILEGED),
2534         SD_BUS_METHOD("Exit", NULL, NULL, method_exit, 0),
2535         SD_BUS_METHOD("Reboot", NULL, NULL, method_reboot, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2536         SD_BUS_METHOD("PowerOff", NULL, NULL, method_poweroff, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2537         SD_BUS_METHOD("Halt", NULL, NULL, method_halt, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2538         SD_BUS_METHOD("KExec", NULL, NULL, method_kexec, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2539         SD_BUS_METHOD("SwitchRoot", "ss", NULL, method_switch_root, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2540         SD_BUS_METHOD("SetEnvironment", "as", NULL, method_set_environment, SD_BUS_VTABLE_UNPRIVILEGED),
2541         SD_BUS_METHOD("UnsetEnvironment", "as", NULL, method_unset_environment, SD_BUS_VTABLE_UNPRIVILEGED),
2542         SD_BUS_METHOD("UnsetAndSetEnvironment", "asas", NULL, method_unset_and_set_environment, SD_BUS_VTABLE_UNPRIVILEGED),
2543         SD_BUS_METHOD("ListUnitFiles", NULL, "a(ss)", method_list_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2544         SD_BUS_METHOD("ListUnitFilesByPatterns", "asas", "a(ss)", method_list_unit_files_by_patterns, SD_BUS_VTABLE_UNPRIVILEGED),
2545         SD_BUS_METHOD("GetUnitFileState", "s", "s", method_get_unit_file_state, SD_BUS_VTABLE_UNPRIVILEGED),
2546         SD_BUS_METHOD("EnableUnitFiles", "asbb", "ba(sss)", method_enable_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2547         SD_BUS_METHOD("DisableUnitFiles", "asb", "a(sss)", method_disable_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2548         SD_BUS_METHOD("ReenableUnitFiles", "asbb", "ba(sss)", method_reenable_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2549         SD_BUS_METHOD("LinkUnitFiles", "asbb", "a(sss)", method_link_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2550         SD_BUS_METHOD("PresetUnitFiles", "asbb", "ba(sss)", method_preset_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2551         SD_BUS_METHOD("PresetUnitFilesWithMode", "assbb", "ba(sss)", method_preset_unit_files_with_mode, SD_BUS_VTABLE_UNPRIVILEGED),
2552         SD_BUS_METHOD("MaskUnitFiles", "asbb", "a(sss)", method_mask_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2553         SD_BUS_METHOD("UnmaskUnitFiles", "asb", "a(sss)", method_unmask_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2554         SD_BUS_METHOD("RevertUnitFiles", "as", "a(sss)", method_revert_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2555         SD_BUS_METHOD("SetDefaultTarget", "sb", "a(sss)", method_set_default_target, SD_BUS_VTABLE_UNPRIVILEGED),
2556         SD_BUS_METHOD("GetDefaultTarget", NULL, "s", method_get_default_target, SD_BUS_VTABLE_UNPRIVILEGED),
2557         SD_BUS_METHOD("PresetAllUnitFiles", "sbb", "a(sss)", method_preset_all_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2558         SD_BUS_METHOD("AddDependencyUnitFiles", "asssbb", "a(sss)", method_add_dependency_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2559         SD_BUS_METHOD("GetUnitFileLinks", "sb", "as", method_get_unit_file_links, SD_BUS_VTABLE_UNPRIVILEGED),
2560         SD_BUS_METHOD("SetExitCode", "y", NULL, method_set_exit_code, SD_BUS_VTABLE_UNPRIVILEGED),
2561         SD_BUS_METHOD("LookupDynamicUserByName", "s", "u", method_lookup_dynamic_user_by_name, SD_BUS_VTABLE_UNPRIVILEGED),
2562         SD_BUS_METHOD("LookupDynamicUserByUID", "u", "s", method_lookup_dynamic_user_by_uid, SD_BUS_VTABLE_UNPRIVILEGED),
2563         SD_BUS_METHOD("GetDynamicUsers", NULL, "a(us)", method_get_dynamic_users, SD_BUS_VTABLE_UNPRIVILEGED),
2564
2565         SD_BUS_SIGNAL("UnitNew", "so", 0),
2566         SD_BUS_SIGNAL("UnitRemoved", "so", 0),
2567         SD_BUS_SIGNAL("JobNew", "uos", 0),
2568         SD_BUS_SIGNAL("JobRemoved", "uoss", 0),
2569         SD_BUS_SIGNAL("StartupFinished", "tttttt", 0),
2570         SD_BUS_SIGNAL("UnitFilesChanged", NULL, 0),
2571         SD_BUS_SIGNAL("Reloading", "b", 0),
2572
2573         SD_BUS_VTABLE_END
2574 };
2575
2576 static int send_finished(sd_bus *bus, void *userdata) {
2577         _cleanup_(sd_bus_message_unrefp) sd_bus_message *message = NULL;
2578         usec_t *times = userdata;
2579         int r;
2580
2581         assert(bus);
2582         assert(times);
2583
2584         r = sd_bus_message_new_signal(bus, &message, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "StartupFinished");
2585         if (r < 0)
2586                 return r;
2587
2588         r = sd_bus_message_append(message, "tttttt", times[0], times[1], times[2], times[3], times[4], times[5]);
2589         if (r < 0)
2590                 return r;
2591
2592         return sd_bus_send(bus, message, NULL);
2593 }
2594
2595 void bus_manager_send_finished(
2596                 Manager *m,
2597                 usec_t firmware_usec,
2598                 usec_t loader_usec,
2599                 usec_t kernel_usec,
2600                 usec_t initrd_usec,
2601                 usec_t userspace_usec,
2602                 usec_t total_usec) {
2603
2604         int r;
2605
2606         assert(m);
2607
2608         r = bus_foreach_bus(
2609                         m,
2610                         NULL,
2611                         send_finished,
2612                         (usec_t[6]) {
2613                                 firmware_usec,
2614                                 loader_usec,
2615                                 kernel_usec,
2616                                 initrd_usec,
2617                                 userspace_usec,
2618                                 total_usec
2619                         });
2620         if (r < 0)
2621                 log_debug_errno(r, "Failed to send finished signal: %m");
2622 }
2623
2624 static int send_reloading(sd_bus *bus, void *userdata) {
2625         _cleanup_(sd_bus_message_unrefp) sd_bus_message *message = NULL;
2626         int r;
2627
2628         assert(bus);
2629
2630         r = sd_bus_message_new_signal(bus, &message, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "Reloading");
2631         if (r < 0)
2632                 return r;
2633
2634         r = sd_bus_message_append(message, "b", PTR_TO_INT(userdata));
2635         if (r < 0)
2636                 return r;
2637
2638         return sd_bus_send(bus, message, NULL);
2639 }
2640
2641 void bus_manager_send_reloading(Manager *m, bool active) {
2642         int r;
2643
2644         assert(m);
2645
2646         r = bus_foreach_bus(m, NULL, send_reloading, INT_TO_PTR(active));
2647         if (r < 0)
2648                 log_debug_errno(r, "Failed to send reloading signal: %m");
2649 }
2650
2651 static int send_changed_signal(sd_bus *bus, void *userdata) {
2652         assert(bus);
2653
2654         return sd_bus_emit_properties_changed_strv(bus,
2655                                                    "/org/freedesktop/systemd1",
2656                                                    "org.freedesktop.systemd1.Manager",
2657                                                    NULL);
2658 }
2659
2660 void bus_manager_send_change_signal(Manager *m) {
2661         int r;
2662
2663         assert(m);
2664
2665         r = bus_foreach_bus(m, NULL, send_changed_signal, NULL);
2666         if (r < 0)
2667                 log_debug_errno(r, "Failed to send manager change signal: %m");
2668 }