src/core/dbus-manager.c

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