src/core/dbus-manager.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 /***
   3   This file is part of systemd.
   4
   5   Copyright 2010 Lennart Poettering
   6 ***/
   7
   8 #include <errno.h>
   9 #include <sys/prctl.h>
  10 #include <sys/statvfs.h>
  11 #include <unistd.h>
  12
  13 #include "alloc-util.h"
  14 #include "architecture.h"
  15 #include "build.h"
  16 #include "bus-common-errors.h"
  17 #include "dbus-execute.h"
  18 #include "dbus-job.h"
  19 #include "dbus-manager.h"
  20 #include "dbus-unit.h"
  21 #include "dbus.h"
  22 #include "env-util.h"
  23 #include "fd-util.h"
  24 #include "fileio.h"
  25 #include "format-util.h"
  26 #include "fs-util.h"
  27 #include "install.h"
  28 #include "log.h"
  29 #include "os-util.h"
  30 #include "parse-util.h"
  31 #include "path-util.h"
  32 #include "selinux-access.h"
  33 #include "stat-util.h"
  34 #include "string-util.h"
  35 #include "strv.h"
  36 #include "syslog-util.h"
  37 #include "user-util.h"
  38 #include "virt.h"
  39 #include "watchdog.h"
  40
  41 /* Require 16MiB free in /run/systemd for reloading/reexecing. After all we need to serialize our state there, and if
  42  * we can't we'll fail badly. */
  43 #define RELOAD_DISK_SPACE_MIN (UINT64_C(16) * UINT64_C(1024) * UINT64_C(1024))
  44
  45 static UnitFileFlags unit_file_bools_to_flags(bool runtime, bool force) {
  46         return (runtime ? UNIT_FILE_RUNTIME : 0) |
  47                (force   ? UNIT_FILE_FORCE   : 0);
  48 }
  49
  50 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_version, "s", PACKAGE_VERSION);
  51 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_features, "s", SYSTEMD_FEATURES);
  52 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_architecture, "s", architecture_to_string(uname_architecture()));
  53 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_log_target, "s", log_target_to_string(log_get_target()));
  54 static BUS_DEFINE_PROPERTY_GET2(property_get_system_state, "s", Manager, manager_state, manager_state_to_string);
  55 static BUS_DEFINE_PROPERTY_GET_GLOBAL(property_get_timer_slack_nsec, "t", (uint64_t) prctl(PR_GET_TIMERSLACK));
  56 static BUS_DEFINE_PROPERTY_GET_REF(property_get_hashmap_size, "u", Hashmap *, hashmap_size);
  57 static BUS_DEFINE_PROPERTY_GET_REF(property_get_set_size, "u", Set *, set_size);
  58
  59 static int property_get_virtualization(
  60                 sd_bus *bus,
  61                 const char *path,
  62                 const char *interface,
  63                 const char *property,
  64                 sd_bus_message *reply,
  65                 void *userdata,
  66                 sd_bus_error *error) {
  67
  68         int v;
  69
  70         assert(bus);
  71         assert(reply);
  72
  73         v = detect_virtualization();
  74
  75         /* Make sure to return the empty string when we detect no virtualization, as that is the API.
  76          *
  77          * https://github.com/systemd/systemd/issues/1423
  78          */
  79
  80         return sd_bus_message_append(
  81                         reply, "s",
  82                         v == VIRTUALIZATION_NONE ? NULL : virtualization_to_string(v));
  83 }
  84
  85 static int property_get_tainted(
  86                 sd_bus *bus,
  87                 const char *path,
  88                 const char *interface,
  89                 const char *property,
  90                 sd_bus_message *reply,
  91                 void *userdata,
  92                 sd_bus_error *error) {
  93
  94         _cleanup_free_ char *s = NULL;
  95         Manager *m = userdata;
  96
  97         assert(bus);
  98         assert(reply);
  99         assert(m);
 100
 101         s = manager_taint_string(m);
 102         if (!s)
 103                 return log_oom();
 104
 105         return sd_bus_message_append(reply, "s", s);
 106 }
 107
 108 static int property_set_log_target(
 109                 sd_bus *bus,
 110                 const char *path,
 111                 const char *interface,
 112                 const char *property,
 113                 sd_bus_message *value,
 114                 void *userdata,
 115                 sd_bus_error *error) {
 116
 117         const char *t;
 118         int r;
 119
 120         assert(bus);
 121         assert(value);
 122
 123         r = sd_bus_message_read(value, "s", &t);
 124         if (r < 0)
 125                 return r;
 126
 127         return log_set_target_from_string(t);
 128 }
 129
 130 static int property_get_log_level(
 131                 sd_bus *bus,
 132                 const char *path,
 133                 const char *interface,
 134                 const char *property,
 135                 sd_bus_message *reply,
 136                 void *userdata,
 137                 sd_bus_error *error) {
 138
 139         _cleanup_free_ char *t = NULL;
 140         int r;
 141
 142         assert(bus);
 143         assert(reply);
 144
 145         r = log_level_to_string_alloc(log_get_max_level(), &t);
 146         if (r < 0)
 147                 return r;
 148
 149         return sd_bus_message_append(reply, "s", t);
 150 }
 151
 152 static int property_set_log_level(
 153                 sd_bus *bus,
 154                 const char *path,
 155                 const char *interface,
 156                 const char *property,
 157                 sd_bus_message *value,
 158                 void *userdata,
 159                 sd_bus_error *error) {
 160
 161         Manager *m = userdata;
 162         const char *t;
 163         int r;
 164
 165         assert(bus);
 166         assert(value);
 167
 168         r = sd_bus_message_read(value, "s", &t);
 169         if (r < 0)
 170                 return r;
 171
 172         if (isempty(t))
 173                 manager_restore_original_log_level(m);
 174         else {
 175                 int level;
 176
 177                 level = log_level_from_string(t);
 178                 if (level < 0)
 179                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid log level '%s'", t);
 180
 181                 manager_override_log_level(m, level);
 182         }
 183
 184         return 0;
 185 }
 186
 187 static int property_get_progress(
 188                 sd_bus *bus,
 189                 const char *path,
 190                 const char *interface,
 191                 const char *property,
 192                 sd_bus_message *reply,
 193                 void *userdata,
 194                 sd_bus_error *error) {
 195
 196         Manager *m = userdata;
 197         double d;
 198
 199         assert(bus);
 200         assert(reply);
 201         assert(m);
 202
 203         if (MANAGER_IS_FINISHED(m))
 204                 d = 1.0;
 205         else
 206                 d = 1.0 - ((double) hashmap_size(m->jobs) / (double) m->n_installed_jobs);
 207
 208         return sd_bus_message_append(reply, "d", d);
 209 }
 210
 211 static int property_get_show_status(
 212                 sd_bus *bus,
 213                 const char *path,
 214                 const char *interface,
 215                 const char *property,
 216                 sd_bus_message *reply,
 217                 void *userdata,
 218                 sd_bus_error *error) {
 219
 220         Manager *m = userdata;
 221         int b;
 222
 223         assert(bus);
 224         assert(reply);
 225         assert(m);
 226
 227         b = m->show_status > 0;
 228         return sd_bus_message_append_basic(reply, 'b', &b);
 229 }
 230
 231 static int property_set_runtime_watchdog(
 232                 sd_bus *bus,
 233                 const char *path,
 234                 const char *interface,
 235                 const char *property,
 236                 sd_bus_message *value,
 237                 void *userdata,
 238                 sd_bus_error *error) {
 239
 240         usec_t *t = userdata;
 241         int r;
 242
 243         assert(bus);
 244         assert(value);
 245
 246         assert_cc(sizeof(usec_t) == sizeof(uint64_t));
 247
 248         r = sd_bus_message_read(value, "t", t);
 249         if (r < 0)
 250                 return r;
 251
 252         return watchdog_set_timeout(t);
 253 }
 254
 255 static int bus_get_unit_by_name(Manager *m, sd_bus_message *message, const char *name, Unit **ret_unit, sd_bus_error *error) {
 256         Unit *u;
 257         int r;
 258
 259         assert(m);
 260         assert(message);
 261         assert(ret_unit);
 262
 263         /* More or less a wrapper around manager_get_unit() that generates nice errors and has one trick up its sleeve:
 264          * if the name is specified empty we use the client's unit. */
 265
 266         if (isempty(name)) {
 267                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 268                 pid_t pid;
 269
 270                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 271                 if (r < 0)
 272                         return r;
 273
 274                 r = sd_bus_creds_get_pid(creds, &pid);
 275                 if (r < 0)
 276                         return r;
 277
 278                 u = manager_get_unit_by_pid(m, pid);
 279                 if (!u)
 280                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Client not member of any unit.");
 281         } else {
 282                 u = manager_get_unit(m, name);
 283                 if (!u)
 284                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s not loaded.", name);
 285         }
 286
 287         *ret_unit = u;
 288         return 0;
 289 }
 290
 291 static int bus_load_unit_by_name(Manager *m, sd_bus_message *message, const char *name, Unit **ret_unit, sd_bus_error *error) {
 292         assert(m);
 293         assert(message);
 294         assert(ret_unit);
 295
 296         /* Pretty much the same as bus_get_unit_by_name(), but we also load the unit if necessary. */
 297
 298         if (isempty(name))
 299                 return bus_get_unit_by_name(m, message, name, ret_unit, error);
 300
 301         return manager_load_unit(m, name, NULL, error, ret_unit);
 302 }
 303
 304 static int method_get_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 305         _cleanup_free_ char *path = NULL;
 306         Manager *m = userdata;
 307         const char *name;
 308         Unit *u;
 309         int r;
 310
 311         assert(message);
 312         assert(m);
 313
 314         /* Anyone can call this method */
 315
 316         r = sd_bus_message_read(message, "s", &name);
 317         if (r < 0)
 318                 return r;
 319
 320         r = bus_get_unit_by_name(m, message, name, &u, error);
 321         if (r < 0)
 322                 return r;
 323
 324         r = mac_selinux_unit_access_check(u, message, "status", error);
 325         if (r < 0)
 326                 return r;
 327
 328         path = unit_dbus_path(u);
 329         if (!path)
 330                 return -ENOMEM;
 331
 332         return sd_bus_reply_method_return(message, "o", path);
 333 }
 334
 335 static int method_get_unit_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 336         _cleanup_free_ char *path = NULL;
 337         Manager *m = userdata;
 338         pid_t pid;
 339         Unit *u;
 340         int r;
 341
 342         assert(message);
 343         assert(m);
 344
 345         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 346
 347         /* Anyone can call this method */
 348
 349         r = sd_bus_message_read(message, "u", &pid);
 350         if (r < 0)
 351                 return r;
 352         if (pid < 0)
 353                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid PID " PID_FMT, pid);
 354
 355         if (pid == 0) {
 356                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 357
 358                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 359                 if (r < 0)
 360                         return r;
 361
 362                 r = sd_bus_creds_get_pid(creds, &pid);
 363                 if (r < 0)
 364                         return r;
 365         }
 366
 367         u = manager_get_unit_by_pid(m, pid);
 368         if (!u)
 369                 return sd_bus_error_setf(error, BUS_ERROR_NO_UNIT_FOR_PID, "PID "PID_FMT" does not belong to any loaded unit.", pid);
 370
 371         r = mac_selinux_unit_access_check(u, message, "status", error);
 372         if (r < 0)
 373                 return r;
 374
 375         path = unit_dbus_path(u);
 376         if (!path)
 377                 return -ENOMEM;
 378
 379         return sd_bus_reply_method_return(message, "o", path);
 380 }
 381
 382 static int method_get_unit_by_invocation_id(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 383         _cleanup_free_ char *path = NULL;
 384         Manager *m = userdata;
 385         sd_id128_t id;
 386         const void *a;
 387         Unit *u;
 388         size_t sz;
 389         int r;
 390
 391         assert(message);
 392         assert(m);
 393
 394         /* Anyone can call this method */
 395
 396         r = sd_bus_message_read_array(message, 'y', &a, &sz);
 397         if (r < 0)
 398                 return r;
 399         if (sz == 0)
 400                 id = SD_ID128_NULL;
 401         else if (sz == 16)
 402                 memcpy(&id, a, sz);
 403         else
 404                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid invocation ID");
 405
 406         if (sd_id128_is_null(id)) {
 407                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 408                 pid_t pid;
 409
 410                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 411                 if (r < 0)
 412                         return r;
 413
 414                 r = sd_bus_creds_get_pid(creds, &pid);
 415                 if (r < 0)
 416                         return r;
 417
 418                 u = manager_get_unit_by_pid(m, pid);
 419                 if (!u)
 420                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Client " PID_FMT " not member of any unit.", pid);
 421         } else {
 422                 u = hashmap_get(m->units_by_invocation_id, &id);
 423                 if (!u)
 424                         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));
 425         }
 426
 427         r = mac_selinux_unit_access_check(u, message, "status", error);
 428         if (r < 0)
 429                 return r;
 430
 431         /* So here's a special trick: the bus path we return actually references the unit by its invocation ID instead
 432          * of the unit name. This means it stays valid only as long as the invocation ID stays the same. */
 433         path = unit_dbus_path_invocation_id(u);
 434         if (!path)
 435                 return -ENOMEM;
 436
 437         return sd_bus_reply_method_return(message, "o", path);
 438 }
 439
 440 static int method_get_unit_by_control_group(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 441         _cleanup_free_ char *path = NULL;
 442         Manager *m = userdata;
 443         const char *cgroup;
 444         Unit *u;
 445         int r;
 446
 447         r = sd_bus_message_read(message, "s", &cgroup);
 448         if (r < 0)
 449                 return r;
 450
 451         u = manager_get_unit_by_cgroup(m, cgroup);
 452         if (!u)
 453                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Control group '%s' is not valid or not managed by this instance", cgroup);
 454
 455         r = mac_selinux_unit_access_check(u, message, "status", error);
 456         if (r < 0)
 457                 return r;
 458
 459         path = unit_dbus_path(u);
 460         if (!path)
 461                 return -ENOMEM;
 462
 463         return sd_bus_reply_method_return(message, "o", path);
 464 }
 465
 466 static int method_load_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 467         _cleanup_free_ char *path = NULL;
 468         Manager *m = userdata;
 469         const char *name;
 470         Unit *u;
 471         int r;
 472
 473         assert(message);
 474         assert(m);
 475
 476         /* Anyone can call this method */
 477
 478         r = sd_bus_message_read(message, "s", &name);
 479         if (r < 0)
 480                 return r;
 481
 482         r = bus_load_unit_by_name(m, message, name, &u, error);
 483         if (r < 0)
 484                 return r;
 485
 486         r = mac_selinux_unit_access_check(u, message, "status", error);
 487         if (r < 0)
 488                 return r;
 489
 490         path = unit_dbus_path(u);
 491         if (!path)
 492                 return -ENOMEM;
 493
 494         return sd_bus_reply_method_return(message, "o", path);
 495 }
 496
 497 static int method_start_unit_generic(sd_bus_message *message, Manager *m, JobType job_type, bool reload_if_possible, sd_bus_error *error) {
 498         const char *name;
 499         Unit *u;
 500         int r;
 501
 502         assert(message);
 503         assert(m);
 504
 505         r = sd_bus_message_read(message, "s", &name);
 506         if (r < 0)
 507                 return r;
 508
 509         r = manager_load_unit(m, name, NULL, error, &u);
 510         if (r < 0)
 511                 return r;
 512
 513         return bus_unit_method_start_generic(message, u, job_type, reload_if_possible, error);
 514 }
 515
 516 static int method_start_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 517         return method_start_unit_generic(message, userdata, JOB_START, false, error);
 518 }
 519
 520 static int method_stop_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 521         return method_start_unit_generic(message, userdata, JOB_STOP, false, error);
 522 }
 523
 524 static int method_reload_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 525         return method_start_unit_generic(message, userdata, JOB_RELOAD, false, error);
 526 }
 527
 528 static int method_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 529         return method_start_unit_generic(message, userdata, JOB_RESTART, false, error);
 530 }
 531
 532 static int method_try_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 533         return method_start_unit_generic(message, userdata, JOB_TRY_RESTART, false, error);
 534 }
 535
 536 static int method_reload_or_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 537         return method_start_unit_generic(message, userdata, JOB_RESTART, true, error);
 538 }
 539
 540 static int method_reload_or_try_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 541         return method_start_unit_generic(message, userdata, JOB_TRY_RESTART, true, error);
 542 }
 543
 544 static int method_start_unit_replace(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 545         Manager *m = userdata;
 546         const char *old_name;
 547         Unit *u;
 548         int r;
 549
 550         assert(message);
 551         assert(m);
 552
 553         r = sd_bus_message_read(message, "s", &old_name);
 554         if (r < 0)
 555                 return r;
 556
 557         r = bus_get_unit_by_name(m, message, old_name, &u, error);
 558         if (r < 0)
 559                 return r;
 560         if (!u->job || u->job->type != JOB_START)
 561                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "No job queued for unit %s", old_name);
 562
 563         return method_start_unit_generic(message, m, JOB_START, false, error);
 564 }
 565
 566 static int method_kill_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 567         Manager *m = userdata;
 568         const char *name;
 569         Unit *u;
 570         int r;
 571
 572         assert(message);
 573         assert(m);
 574
 575         r = sd_bus_message_read(message, "s", &name);
 576         if (r < 0)
 577                 return r;
 578
 579         r = bus_get_unit_by_name(m, message, name, &u, error);
 580         if (r < 0)
 581                 return r;
 582
 583         return bus_unit_method_kill(message, u, error);
 584 }
 585
 586 static int method_reset_failed_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 587         Manager *m = userdata;
 588         const char *name;
 589         Unit *u;
 590         int r;
 591
 592         assert(message);
 593         assert(m);
 594
 595         r = sd_bus_message_read(message, "s", &name);
 596         if (r < 0)
 597                 return r;
 598
 599         r = bus_get_unit_by_name(m, message, name, &u, error);
 600         if (r < 0)
 601                 return r;
 602
 603         return bus_unit_method_reset_failed(message, u, error);
 604 }
 605
 606 static int method_set_unit_properties(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 607         Manager *m = userdata;
 608         const char *name;
 609         Unit *u;
 610         int r;
 611
 612         assert(message);
 613         assert(m);
 614
 615         r = sd_bus_message_read(message, "s", &name);
 616         if (r < 0)
 617                 return r;
 618
 619         r = bus_load_unit_by_name(m, message, name, &u, error);
 620         if (r < 0)
 621                 return r;
 622
 623         r = bus_unit_validate_load_state(u, error);
 624         if (r < 0)
 625                 return r;
 626
 627         return bus_unit_method_set_properties(message, u, error);
 628 }
 629
 630 static int method_ref_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 631         Manager *m = userdata;
 632         const char *name;
 633         Unit *u;
 634         int r;
 635
 636         assert(message);
 637         assert(m);
 638
 639         r = sd_bus_message_read(message, "s", &name);
 640         if (r < 0)
 641                 return r;
 642
 643         r = bus_load_unit_by_name(m, message, name, &u, error);
 644         if (r < 0)
 645                 return r;
 646
 647         r = bus_unit_validate_load_state(u, error);
 648         if (r < 0)
 649                 return r;
 650
 651         return bus_unit_method_ref(message, u, error);
 652 }
 653
 654 static int method_unref_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 655         Manager *m = userdata;
 656         const char *name;
 657         Unit *u;
 658         int r;
 659
 660         assert(message);
 661         assert(m);
 662
 663         r = sd_bus_message_read(message, "s", &name);
 664         if (r < 0)
 665                 return r;
 666
 667         r = bus_load_unit_by_name(m, message, name, &u, error);
 668         if (r < 0)
 669                 return r;
 670
 671         r = bus_unit_validate_load_state(u, error);
 672         if (r < 0)
 673                 return r;
 674
 675         return bus_unit_method_unref(message, u, error);
 676 }
 677
 678 static int reply_unit_info(sd_bus_message *reply, Unit *u) {
 679         _cleanup_free_ char *unit_path = NULL, *job_path = NULL;
 680         Unit *following;
 681
 682         following = unit_following(u);
 683
 684         unit_path = unit_dbus_path(u);
 685         if (!unit_path)
 686                 return -ENOMEM;
 687
 688         if (u->job) {
 689                 job_path = job_dbus_path(u->job);
 690                 if (!job_path)
 691                         return -ENOMEM;
 692         }
 693
 694         return sd_bus_message_append(
 695                         reply, "(ssssssouso)",
 696                         u->id,
 697                         unit_description(u),
 698                         unit_load_state_to_string(u->load_state),
 699                         unit_active_state_to_string(unit_active_state(u)),
 700                         unit_sub_state_to_string(u),
 701                         following ? following->id : "",
 702                         unit_path,
 703                         u->job ? u->job->id : 0,
 704                         u->job ? job_type_to_string(u->job->type) : "",
 705                         job_path ? job_path : "/");
 706 }
 707
 708 static int method_list_units_by_names(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 709         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 710         Manager *m = userdata;
 711         int r;
 712         char **unit;
 713         _cleanup_strv_free_ char **units = NULL;
 714
 715         assert(message);
 716         assert(m);
 717
 718         r = sd_bus_message_read_strv(message, &units);
 719         if (r < 0)
 720                 return r;
 721
 722         r = sd_bus_message_new_method_return(message, &reply);
 723         if (r < 0)
 724                 return r;
 725
 726         r = sd_bus_message_open_container(reply, 'a', "(ssssssouso)");
 727         if (r < 0)
 728                 return r;
 729
 730         STRV_FOREACH(unit, units) {
 731                 Unit *u;
 732
 733                 if (!unit_name_is_valid(*unit, UNIT_NAME_ANY))
 734                         continue;
 735
 736                 r = bus_load_unit_by_name(m, message, *unit, &u, error);
 737                 if (r < 0)
 738                         return r;
 739
 740                 r = reply_unit_info(reply, u);
 741                 if (r < 0)
 742                         return r;
 743         }
 744
 745         r = sd_bus_message_close_container(reply);
 746         if (r < 0)
 747                 return r;
 748
 749         return sd_bus_send(NULL, reply, NULL);
 750 }
 751
 752 static int method_get_unit_processes(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 753         Manager *m = userdata;
 754         const char *name;
 755         Unit *u;
 756         int r;
 757
 758         assert(message);
 759         assert(m);
 760
 761         r = sd_bus_message_read(message, "s", &name);
 762         if (r < 0)
 763                 return r;
 764
 765         r = bus_get_unit_by_name(m, message, name, &u, error);
 766         if (r < 0)
 767                 return r;
 768
 769         return bus_unit_method_get_processes(message, u, error);
 770 }
 771
 772 static int method_attach_processes_to_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 773         Manager *m = userdata;
 774         const char *name;
 775         Unit *u;
 776         int r;
 777
 778         assert(message);
 779         assert(m);
 780
 781         r = sd_bus_message_read(message, "s", &name);
 782         if (r < 0)
 783                 return r;
 784
 785         r = bus_get_unit_by_name(m, message, name, &u, error);
 786         if (r < 0)
 787                 return r;
 788
 789         return bus_unit_method_attach_processes(message, u, error);
 790 }
 791
 792 static int transient_unit_from_message(
 793                 Manager *m,
 794                 sd_bus_message *message,
 795                 const char *name,
 796                 Unit **unit,
 797                 sd_bus_error *error) {
 798
 799         UnitType t;
 800         Unit *u;
 801         int r;
 802
 803         assert(m);
 804         assert(message);
 805         assert(name);
 806
 807         t = unit_name_to_type(name);
 808         if (t < 0)
 809                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid unit name or type.");
 810
 811         if (!unit_vtable[t]->can_transient)
 812                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unit type %s does not support transient units.", unit_type_to_string(t));
 813
 814         r = manager_load_unit(m, name, NULL, error, &u);
 815         if (r < 0)
 816                 return r;
 817
 818         if (!unit_is_pristine(u))
 819                 return sd_bus_error_setf(error, BUS_ERROR_UNIT_EXISTS, "Unit %s already exists.", name);
 820
 821         /* OK, the unit failed to load and is unreferenced, now let's
 822          * fill in the transient data instead */
 823         r = unit_make_transient(u);
 824         if (r < 0)
 825                 return r;
 826
 827         /* Set our properties */
 828         r = bus_unit_set_properties(u, message, UNIT_RUNTIME, false, error);
 829         if (r < 0)
 830                 return r;
 831
 832         /* If the client asked for it, automatically add a reference to this unit. */
 833         if (u->bus_track_add) {
 834                 r = bus_unit_track_add_sender(u, message);
 835                 if (r < 0)
 836                         return log_error_errno(r, "Failed to watch sender: %m");
 837         }
 838
 839         /* Now load the missing bits of the unit we just created */
 840         unit_add_to_load_queue(u);
 841         manager_dispatch_load_queue(m);
 842
 843         *unit = u;
 844
 845         return 0;
 846 }
 847
 848 static int transient_aux_units_from_message(
 849                 Manager *m,
 850                 sd_bus_message *message,
 851                 sd_bus_error *error) {
 852
 853         int r;
 854
 855         assert(m);
 856         assert(message);
 857
 858         r = sd_bus_message_enter_container(message, 'a', "(sa(sv))");
 859         if (r < 0)
 860                 return r;
 861
 862         while ((r = sd_bus_message_enter_container(message, 'r', "sa(sv)")) > 0) {
 863                 const char *name = NULL;
 864                 Unit *u;
 865
 866                 r = sd_bus_message_read(message, "s", &name);
 867                 if (r < 0)
 868                         return r;
 869
 870                 r = transient_unit_from_message(m, message, name, &u, error);
 871                 if (r < 0)
 872                         return r;
 873
 874                 r = sd_bus_message_exit_container(message);
 875                 if (r < 0)
 876                         return r;
 877         }
 878         if (r < 0)
 879                 return r;
 880
 881         r = sd_bus_message_exit_container(message);
 882         if (r < 0)
 883                 return r;
 884
 885         return 0;
 886 }
 887
 888 static int method_start_transient_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 889         const char *name, *smode;
 890         Manager *m = userdata;
 891         JobMode mode;
 892         Unit *u;
 893         int r;
 894
 895         assert(message);
 896         assert(m);
 897
 898         r = mac_selinux_access_check(message, "start", error);
 899         if (r < 0)
 900                 return r;
 901
 902         r = sd_bus_message_read(message, "ss", &name, &smode);
 903         if (r < 0)
 904                 return r;
 905
 906         mode = job_mode_from_string(smode);
 907         if (mode < 0)
 908                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Job mode %s is invalid.", smode);
 909
 910         r = bus_verify_manage_units_async(m, message, error);
 911         if (r < 0)
 912                 return r;
 913         if (r == 0)
 914                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
 915
 916         r = transient_unit_from_message(m, message, name, &u, error);
 917         if (r < 0)
 918                 return r;
 919
 920         r = transient_aux_units_from_message(m, message, error);
 921         if (r < 0)
 922                 return r;
 923
 924         /* Finally, start it */
 925         return bus_unit_queue_job(message, u, JOB_START, mode, false, error);
 926 }
 927
 928 static int method_get_job(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 929         _cleanup_free_ char *path = NULL;
 930         Manager *m = userdata;
 931         uint32_t id;
 932         Job *j;
 933         int r;
 934
 935         assert(message);
 936         assert(m);
 937
 938         /* Anyone can call this method */
 939
 940         r = sd_bus_message_read(message, "u", &id);
 941         if (r < 0)
 942                 return r;
 943
 944         j = manager_get_job(m, id);
 945         if (!j)
 946                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
 947
 948         r = mac_selinux_unit_access_check(j->unit, message, "status", error);
 949         if (r < 0)
 950                 return r;
 951
 952         path = job_dbus_path(j);
 953         if (!path)
 954                 return -ENOMEM;
 955
 956         return sd_bus_reply_method_return(message, "o", path);
 957 }
 958
 959 static int method_cancel_job(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 960         Manager *m = userdata;
 961         uint32_t id;
 962         Job *j;
 963         int r;
 964
 965         assert(message);
 966         assert(m);
 967
 968         r = sd_bus_message_read(message, "u", &id);
 969         if (r < 0)
 970                 return r;
 971
 972         j = manager_get_job(m, id);
 973         if (!j)
 974                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
 975
 976         return bus_job_method_cancel(message, j, error);
 977 }
 978
 979 static int method_clear_jobs(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 980         Manager *m = userdata;
 981         int r;
 982
 983         assert(message);
 984         assert(m);
 985
 986         r = mac_selinux_access_check(message, "reload", error);
 987         if (r < 0)
 988                 return r;
 989
 990         r = bus_verify_manage_units_async(m, message, error);
 991         if (r < 0)
 992                 return r;
 993         if (r == 0)
 994                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
 995
 996         manager_clear_jobs(m);
 997
 998         return sd_bus_reply_method_return(message, NULL);
 999 }
1000
1001 static int method_reset_failed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1002         Manager *m = userdata;
1003         int r;
1004
1005         assert(message);
1006         assert(m);
1007
1008         r = mac_selinux_access_check(message, "reload", error);
1009         if (r < 0)
1010                 return r;
1011
1012         r = bus_verify_manage_units_async(m, message, error);
1013         if (r < 0)
1014                 return r;
1015         if (r == 0)
1016                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1017
1018         manager_reset_failed(m);
1019
1020         return sd_bus_reply_method_return(message, NULL);
1021 }
1022
1023 static int list_units_filtered(sd_bus_message *message, void *userdata, sd_bus_error *error, char **states, char **patterns) {
1024         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1025         Manager *m = userdata;
1026         const char *k;
1027         Iterator i;
1028         Unit *u;
1029         int r;
1030
1031         assert(message);
1032         assert(m);
1033
1034         /* Anyone can call this method */
1035
1036         r = mac_selinux_access_check(message, "status", error);
1037         if (r < 0)
1038                 return r;
1039
1040         r = sd_bus_message_new_method_return(message, &reply);
1041         if (r < 0)
1042                 return r;
1043
1044         r = sd_bus_message_open_container(reply, 'a', "(ssssssouso)");
1045         if (r < 0)
1046                 return r;
1047
1048         HASHMAP_FOREACH_KEY(u, k, m->units, i) {
1049                 if (k != u->id)
1050                         continue;
1051
1052                 if (!strv_isempty(states) &&
1053                     !strv_contains(states, unit_load_state_to_string(u->load_state)) &&
1054                     !strv_contains(states, unit_active_state_to_string(unit_active_state(u))) &&
1055                     !strv_contains(states, unit_sub_state_to_string(u)))
1056                         continue;
1057
1058                 if (!strv_isempty(patterns) &&
1059                     !strv_fnmatch_or_empty(patterns, u->id, FNM_NOESCAPE))
1060                         continue;
1061
1062                 r = reply_unit_info(reply, u);
1063                 if (r < 0)
1064                         return r;
1065         }
1066
1067         r = sd_bus_message_close_container(reply);
1068         if (r < 0)
1069                 return r;
1070
1071         return sd_bus_send(NULL, reply, NULL);
1072 }
1073
1074 static int method_list_units(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1075         return list_units_filtered(message, userdata, error, NULL, NULL);
1076 }
1077
1078 static int method_list_units_filtered(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1079         _cleanup_strv_free_ char **states = NULL;
1080         int r;
1081
1082         r = sd_bus_message_read_strv(message, &states);
1083         if (r < 0)
1084                 return r;
1085
1086         return list_units_filtered(message, userdata, error, states, NULL);
1087 }
1088
1089 static int method_list_units_by_patterns(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1090         _cleanup_strv_free_ char **states = NULL;
1091         _cleanup_strv_free_ char **patterns = NULL;
1092         int r;
1093
1094         r = sd_bus_message_read_strv(message, &states);
1095         if (r < 0)
1096                 return r;
1097
1098         r = sd_bus_message_read_strv(message, &patterns);
1099         if (r < 0)
1100                 return r;
1101
1102         return list_units_filtered(message, userdata, error, states, patterns);
1103 }
1104
1105 static int method_list_jobs(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1106         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1107         Manager *m = userdata;
1108         Iterator i;
1109         Job *j;
1110         int r;
1111
1112         assert(message);
1113         assert(m);
1114
1115         /* Anyone can call this method */
1116
1117         r = mac_selinux_access_check(message, "status", error);
1118         if (r < 0)
1119                 return r;
1120
1121         r = sd_bus_message_new_method_return(message, &reply);
1122         if (r < 0)
1123                 return r;
1124
1125         r = sd_bus_message_open_container(reply, 'a', "(usssoo)");
1126         if (r < 0)
1127                 return r;
1128
1129         HASHMAP_FOREACH(j, m->jobs, i) {
1130                 _cleanup_free_ char *unit_path = NULL, *job_path = NULL;
1131
1132                 job_path = job_dbus_path(j);
1133                 if (!job_path)
1134                         return -ENOMEM;
1135
1136                 unit_path = unit_dbus_path(j->unit);
1137                 if (!unit_path)
1138                         return -ENOMEM;
1139
1140                 r = sd_bus_message_append(
1141                                 reply, "(usssoo)",
1142                                 j->id,
1143                                 j->unit->id,
1144                                 job_type_to_string(j->type),
1145                                 job_state_to_string(j->state),
1146                                 job_path,
1147                                 unit_path);
1148                 if (r < 0)
1149                         return r;
1150         }
1151
1152         r = sd_bus_message_close_container(reply);
1153         if (r < 0)
1154                 return r;
1155
1156         return sd_bus_send(NULL, reply, NULL);
1157 }
1158
1159 static int method_subscribe(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1160         Manager *m = userdata;
1161         int r;
1162
1163         assert(message);
1164         assert(m);
1165
1166         /* Anyone can call this method */
1167
1168         r = mac_selinux_access_check(message, "status", error);
1169         if (r < 0)
1170                 return r;
1171
1172         if (sd_bus_message_get_bus(message) == m->api_bus) {
1173
1174                 /* Note that direct bus connection subscribe by
1175                  * default, we only track peers on the API bus here */
1176
1177                 if (!m->subscribed) {
1178                         r = sd_bus_track_new(sd_bus_message_get_bus(message), &m->subscribed, NULL, NULL);
1179                         if (r < 0)
1180                                 return r;
1181                 }
1182
1183                 r = sd_bus_track_add_sender(m->subscribed, message);
1184                 if (r < 0)
1185                         return r;
1186                 if (r == 0)
1187                         return sd_bus_error_setf(error, BUS_ERROR_ALREADY_SUBSCRIBED, "Client is already subscribed.");
1188         }
1189
1190         return sd_bus_reply_method_return(message, NULL);
1191 }
1192
1193 static int method_unsubscribe(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1194         Manager *m = userdata;
1195         int r;
1196
1197         assert(message);
1198         assert(m);
1199
1200         /* Anyone can call this method */
1201
1202         r = mac_selinux_access_check(message, "status", error);
1203         if (r < 0)
1204                 return r;
1205
1206         if (sd_bus_message_get_bus(message) == m->api_bus) {
1207                 r = sd_bus_track_remove_sender(m->subscribed, message);
1208                 if (r < 0)
1209                         return r;
1210                 if (r == 0)
1211                         return sd_bus_error_setf(error, BUS_ERROR_NOT_SUBSCRIBED, "Client is not subscribed.");
1212         }
1213
1214         return sd_bus_reply_method_return(message, NULL);
1215 }
1216
1217 static int dump_impl(sd_bus_message *message, void *userdata, sd_bus_error *error, int (*reply)(sd_bus_message *, char *)) {
1218         _cleanup_free_ char *dump = NULL;
1219         Manager *m = userdata;
1220         int r;
1221
1222         assert(message);
1223         assert(m);
1224
1225         /* Anyone can call this method */
1226
1227         r = mac_selinux_access_check(message, "status", error);
1228         if (r < 0)
1229                 return r;
1230
1231         r = manager_get_dump_string(m, &dump);
1232         if (r < 0)
1233                 return r;
1234
1235         return reply(message, dump);
1236 }
1237
1238 static int reply_dump(sd_bus_message *message, char *dump) {
1239         return sd_bus_reply_method_return(message, "s", dump);
1240 }
1241
1242 static int method_dump(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1243         return dump_impl(message, userdata, error, reply_dump);
1244 }
1245
1246 static int reply_dump_by_fd(sd_bus_message *message, char *dump) {
1247         _cleanup_close_ int fd = -1;
1248
1249         fd = acquire_data_fd(dump, strlen(dump), 0);
1250         if (fd < 0)
1251                 return fd;
1252
1253         return sd_bus_reply_method_return(message, "h", fd);
1254 }
1255
1256 static int method_dump_by_fd(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1257         return dump_impl(message, userdata, error, reply_dump_by_fd);
1258 }
1259
1260 static int method_refuse_snapshot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1261         return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Support for snapshots has been removed.");
1262 }
1263
1264 static int verify_run_space(const char *message, sd_bus_error *error) {
1265         struct statvfs svfs;
1266         uint64_t available;
1267
1268         if (statvfs("/run/systemd", &svfs) < 0)
1269                 return sd_bus_error_set_errnof(error, errno, "Failed to statvfs(/run/systemd): %m");
1270
1271         available = (uint64_t) svfs.f_bfree * (uint64_t) svfs.f_bsize;
1272
1273         if (available < RELOAD_DISK_SPACE_MIN) {
1274                 char fb_available[FORMAT_BYTES_MAX], fb_need[FORMAT_BYTES_MAX];
1275                 return sd_bus_error_setf(error,
1276                                          BUS_ERROR_DISK_FULL,
1277                                          "%s, not enough space available on /run/systemd. "
1278                                          "Currently, %s are free, but a safety buffer of %s is enforced.",
1279                                          message,
1280                                          format_bytes(fb_available, sizeof(fb_available), available),
1281                                          format_bytes(fb_need, sizeof(fb_need), RELOAD_DISK_SPACE_MIN));
1282         }
1283
1284         return 0;
1285 }
1286
1287 int verify_run_space_and_log(const char *message) {
1288         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1289         int r;
1290
1291         r = verify_run_space(message, &error);
1292         if (r < 0)
1293                 log_error_errno(r, "%s", bus_error_message(&error, r));
1294
1295         return r;
1296 }
1297
1298 static int method_reload(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1299         Manager *m = userdata;
1300         int r;
1301
1302         assert(message);
1303         assert(m);
1304
1305         r = verify_run_space("Refusing to reload", error);
1306         if (r < 0)
1307                 return r;
1308
1309         r = mac_selinux_access_check(message, "reload", error);
1310         if (r < 0)
1311                 return r;
1312
1313         r = bus_verify_reload_daemon_async(m, message, error);
1314         if (r < 0)
1315                 return r;
1316         if (r == 0)
1317                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1318
1319         /* Instead of sending the reply back right away, we just
1320          * remember that we need to and then send it after the reload
1321          * is finished. That way the caller knows when the reload
1322          * finished. */
1323
1324         assert(!m->queued_message);
1325         r = sd_bus_message_new_method_return(message, &m->queued_message);
1326         if (r < 0)
1327                 return r;
1328
1329         m->exit_code = MANAGER_RELOAD;
1330
1331         return 1;
1332 }
1333
1334 static int method_reexecute(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1335         Manager *m = userdata;
1336         int r;
1337
1338         assert(message);
1339         assert(m);
1340
1341         r = verify_run_space("Refusing to reexecute", error);
1342         if (r < 0)
1343                 return r;
1344
1345         r = mac_selinux_access_check(message, "reload", error);
1346         if (r < 0)
1347                 return r;
1348
1349         r = bus_verify_reload_daemon_async(m, message, error);
1350         if (r < 0)
1351                 return r;
1352         if (r == 0)
1353                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1354
1355         /* We don't send a reply back here, the client should
1356          * just wait for us disconnecting. */
1357
1358         m->exit_code = MANAGER_REEXECUTE;
1359         return 1;
1360 }
1361
1362 static int method_exit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1363         Manager *m = userdata;
1364         int r;
1365
1366         assert(message);
1367         assert(m);
1368
1369         r = mac_selinux_access_check(message, "halt", error);
1370         if (r < 0)
1371                 return r;
1372
1373         /* Exit() (in contrast to SetExitCode()) is actually allowed even if
1374          * we are running on the host. It will fall back on reboot() in
1375          * systemd-shutdown if it cannot do the exit() because it isn't a
1376          * container. */
1377
1378         m->exit_code = MANAGER_EXIT;
1379
1380         return sd_bus_reply_method_return(message, NULL);
1381 }
1382
1383 static int method_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1384         Manager *m = userdata;
1385         int r;
1386
1387         assert(message);
1388         assert(m);
1389
1390         r = mac_selinux_access_check(message, "reboot", error);
1391         if (r < 0)
1392                 return r;
1393
1394         if (!MANAGER_IS_SYSTEM(m))
1395                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Reboot is only supported for system managers.");
1396
1397         m->exit_code = MANAGER_REBOOT;
1398
1399         return sd_bus_reply_method_return(message, NULL);
1400 }
1401
1402 static int method_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1403         Manager *m = userdata;
1404         int r;
1405
1406         assert(message);
1407         assert(m);
1408
1409         r = mac_selinux_access_check(message, "halt", error);
1410         if (r < 0)
1411                 return r;
1412
1413         if (!MANAGER_IS_SYSTEM(m))
1414                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Powering off is only supported for system managers.");
1415
1416         m->exit_code = MANAGER_POWEROFF;
1417
1418         return sd_bus_reply_method_return(message, NULL);
1419 }
1420
1421 static int method_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1422         Manager *m = userdata;
1423         int r;
1424
1425         assert(message);
1426         assert(m);
1427
1428         r = mac_selinux_access_check(message, "halt", error);
1429         if (r < 0)
1430                 return r;
1431
1432         if (!MANAGER_IS_SYSTEM(m))
1433                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Halt is only supported for system managers.");
1434
1435         m->exit_code = MANAGER_HALT;
1436
1437         return sd_bus_reply_method_return(message, NULL);
1438 }
1439
1440 static int method_kexec(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1441         Manager *m = userdata;
1442         int r;
1443
1444         assert(message);
1445         assert(m);
1446
1447         r = mac_selinux_access_check(message, "reboot", error);
1448         if (r < 0)
1449                 return r;
1450
1451         if (!MANAGER_IS_SYSTEM(m))
1452                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "KExec is only supported for system managers.");
1453
1454         m->exit_code = MANAGER_KEXEC;
1455
1456         return sd_bus_reply_method_return(message, NULL);
1457 }
1458
1459 static int method_switch_root(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1460         char *ri = NULL, *rt = NULL;
1461         const char *root, *init;
1462         Manager *m = userdata;
1463         struct statvfs svfs;
1464         uint64_t available;
1465         int r;
1466
1467         assert(message);
1468         assert(m);
1469
1470         if (statvfs("/run/systemd", &svfs) < 0)
1471                 return sd_bus_error_set_errnof(error, errno, "Failed to statvfs(/run/systemd): %m");
1472
1473         available = (uint64_t) svfs.f_bfree * (uint64_t) svfs.f_bsize;
1474
1475         if (available < RELOAD_DISK_SPACE_MIN) {
1476                 char fb_available[FORMAT_BYTES_MAX], fb_need[FORMAT_BYTES_MAX];
1477                 log_warning("Dangerously low amount of free space on /run/systemd, root switching operation might not complete successfuly. "
1478                             "Currently, %s are free, but %s are suggested. Proceeding anyway.",
1479                             format_bytes(fb_available, sizeof(fb_available), available),
1480                             format_bytes(fb_need, sizeof(fb_need), RELOAD_DISK_SPACE_MIN));
1481         }
1482
1483         r = mac_selinux_access_check(message, "reboot", error);
1484         if (r < 0)
1485                 return r;
1486
1487         if (!MANAGER_IS_SYSTEM(m))
1488                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Root switching is only supported by system manager.");
1489
1490         r = sd_bus_message_read(message, "ss", &root, &init);
1491         if (r < 0)
1492                 return r;
1493
1494         if (isempty(root))
1495                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "New root directory may not be the empty string.");
1496         if (!path_is_absolute(root))
1497                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "New root path '%s' is not absolute.", root);
1498         if (path_equal(root, "/"))
1499                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "New root directory cannot be the old root directory.");
1500
1501         /* Safety check */
1502         if (isempty(init)) {
1503                 r = path_is_os_tree(root);
1504                 if (r < 0)
1505                         return sd_bus_error_set_errnof(error, r, "Failed to determine whether root path '%s' contains an OS tree: %m", root);
1506                 if (r == 0)
1507                         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);
1508         } else {
1509                 _cleanup_free_ char *chased = NULL;
1510
1511                 if (!path_is_absolute(init))
1512                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path to init binary '%s' not absolute.", init);
1513
1514                 r = chase_symlinks(init, root, CHASE_PREFIX_ROOT|CHASE_TRAIL_SLASH, &chased);
1515                 if (r < 0)
1516                         return sd_bus_error_set_errnof(error, r, "Could not resolve init executable %s: %m", init);
1517
1518                 if (laccess(chased, X_OK) < 0) {
1519                         if (errno == EACCES)
1520                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Init binary %s is not executable.", init);
1521
1522                         return sd_bus_error_set_errnof(error, r, "Could not check whether init binary %s is executable: %m", init);
1523                 }
1524         }
1525
1526         rt = strdup(root);
1527         if (!rt)
1528                 return -ENOMEM;
1529
1530         if (!isempty(init)) {
1531                 ri = strdup(init);
1532                 if (!ri) {
1533                         free(rt);
1534                         return -ENOMEM;
1535                 }
1536         }
1537
1538         free(m->switch_root);
1539         m->switch_root = rt;
1540
1541         free(m->switch_root_init);
1542         m->switch_root_init = ri;
1543
1544         m->exit_code = MANAGER_SWITCH_ROOT;
1545
1546         return sd_bus_reply_method_return(message, NULL);
1547 }
1548
1549 static int method_set_environment(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1550         _cleanup_strv_free_ char **plus = NULL;
1551         Manager *m = userdata;
1552         int r;
1553
1554         assert(message);
1555         assert(m);
1556
1557         r = mac_selinux_access_check(message, "reload", error);
1558         if (r < 0)
1559                 return r;
1560
1561         r = sd_bus_message_read_strv(message, &plus);
1562         if (r < 0)
1563                 return r;
1564         if (!strv_env_is_valid(plus))
1565                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment assignments");
1566
1567         r = bus_verify_set_environment_async(m, message, error);
1568         if (r < 0)
1569                 return r;
1570         if (r == 0)
1571                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1572
1573         r = manager_environment_add(m, NULL, plus);
1574         if (r < 0)
1575                 return r;
1576
1577         return sd_bus_reply_method_return(message, NULL);
1578 }
1579
1580 static int method_unset_environment(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1581         _cleanup_strv_free_ char **minus = NULL;
1582         Manager *m = userdata;
1583         int r;
1584
1585         assert(message);
1586         assert(m);
1587
1588         r = mac_selinux_access_check(message, "reload", error);
1589         if (r < 0)
1590                 return r;
1591
1592         r = sd_bus_message_read_strv(message, &minus);
1593         if (r < 0)
1594                 return r;
1595
1596         if (!strv_env_name_or_assignment_is_valid(minus))
1597                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment variable names or assignments");
1598
1599         r = bus_verify_set_environment_async(m, message, error);
1600         if (r < 0)
1601                 return r;
1602         if (r == 0)
1603                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1604
1605         r = manager_environment_add(m, minus, NULL);
1606         if (r < 0)
1607                 return r;
1608
1609         return sd_bus_reply_method_return(message, NULL);
1610 }
1611
1612 static int method_unset_and_set_environment(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1613         _cleanup_strv_free_ char **minus = NULL, **plus = NULL;
1614         Manager *m = userdata;
1615         int r;
1616
1617         assert(message);
1618         assert(m);
1619
1620         r = mac_selinux_access_check(message, "reload", error);
1621         if (r < 0)
1622                 return r;
1623
1624         r = sd_bus_message_read_strv(message, &minus);
1625         if (r < 0)
1626                 return r;
1627
1628         r = sd_bus_message_read_strv(message, &plus);
1629         if (r < 0)
1630                 return r;
1631
1632         if (!strv_env_name_or_assignment_is_valid(minus))
1633                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment variable names or assignments");
1634         if (!strv_env_is_valid(plus))
1635                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment assignments");
1636
1637         r = bus_verify_set_environment_async(m, message, error);
1638         if (r < 0)
1639                 return r;
1640         if (r == 0)
1641                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1642
1643         r = manager_environment_add(m, minus, plus);
1644         if (r < 0)
1645                 return r;
1646
1647         return sd_bus_reply_method_return(message, NULL);
1648 }
1649
1650 static int method_set_exit_code(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1651         Manager *m = userdata;
1652         uint8_t code;
1653         int r;
1654
1655         assert(message);
1656         assert(m);
1657
1658         r = mac_selinux_access_check(message, "exit", error);
1659         if (r < 0)
1660                 return r;
1661
1662         r = sd_bus_message_read_basic(message, 'y', &code);
1663         if (r < 0)
1664                 return r;
1665
1666         if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0)
1667                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "ExitCode can only be set for user service managers or in containers.");
1668
1669         m->return_value = code;
1670
1671         return sd_bus_reply_method_return(message, NULL);
1672 }
1673
1674 static int method_lookup_dynamic_user_by_name(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1675         Manager *m = userdata;
1676         const char *name;
1677         uid_t uid;
1678         int r;
1679
1680         assert(message);
1681         assert(m);
1682
1683         r = sd_bus_message_read_basic(message, 's', &name);
1684         if (r < 0)
1685                 return r;
1686
1687         if (!MANAGER_IS_SYSTEM(m))
1688                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Dynamic users are only supported in the system instance.");
1689         if (!valid_user_group_name(name))
1690                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "User name invalid: %s", name);
1691
1692         r = dynamic_user_lookup_name(m, name, &uid);
1693         if (r == -ESRCH)
1694                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_DYNAMIC_USER, "Dynamic user %s does not exist.", name);
1695         if (r < 0)
1696                 return r;
1697
1698         return sd_bus_reply_method_return(message, "u", (uint32_t) uid);
1699 }
1700
1701 static int method_lookup_dynamic_user_by_uid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1702         _cleanup_free_ char *name = NULL;
1703         Manager *m = userdata;
1704         uid_t uid;
1705         int r;
1706
1707         assert(message);
1708         assert(m);
1709
1710         assert_cc(sizeof(uid) == sizeof(uint32_t));
1711         r = sd_bus_message_read_basic(message, 'u', &uid);
1712         if (r < 0)
1713                 return r;
1714
1715         if (!MANAGER_IS_SYSTEM(m))
1716                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Dynamic users are only supported in the system instance.");
1717         if (!uid_is_valid(uid))
1718                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "User ID invalid: " UID_FMT, uid);
1719
1720         r = dynamic_user_lookup_uid(m, uid, &name);
1721         if (r == -ESRCH)
1722                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_DYNAMIC_USER, "Dynamic user ID " UID_FMT " does not exist.", uid);
1723         if (r < 0)
1724                 return r;
1725
1726         return sd_bus_reply_method_return(message, "s", name);
1727 }
1728
1729 static int method_get_dynamic_users(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1730         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1731         Manager *m = userdata;
1732         DynamicUser *d;
1733         Iterator i;
1734         int r;
1735
1736         assert(message);
1737         assert(m);
1738
1739         assert_cc(sizeof(uid_t) == sizeof(uint32_t));
1740
1741         if (!MANAGER_IS_SYSTEM(m))
1742                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Dynamic users are only supported in the system instance.");
1743
1744         r = sd_bus_message_new_method_return(message, &reply);
1745         if (r < 0)
1746                 return r;
1747
1748         r = sd_bus_message_open_container(reply, 'a', "(us)");
1749         if (r < 0)
1750                 return r;
1751
1752         HASHMAP_FOREACH(d, m->dynamic_users, i) {
1753                 uid_t uid;
1754
1755                 r = dynamic_user_current(d, &uid);
1756                 if (r == -EAGAIN) /* not realized yet? */
1757                         continue;
1758                 if (r < 0)
1759                         return sd_bus_error_setf(error, SD_BUS_ERROR_FAILED, "Failed to lookup a dynamic user.");
1760
1761                 r = sd_bus_message_append(reply, "(us)", uid, d->name);
1762                 if (r < 0)
1763                         return r;
1764         }
1765
1766         r = sd_bus_message_close_container(reply);
1767         if (r < 0)
1768                 return r;
1769
1770         return sd_bus_send(NULL, reply, NULL);
1771 }
1772
1773 static int list_unit_files_by_patterns(sd_bus_message *message, void *userdata, sd_bus_error *error, char **states, char **patterns) {
1774         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1775         Manager *m = userdata;
1776         UnitFileList *item;
1777         Hashmap *h;
1778         Iterator i;
1779         int r;
1780
1781         assert(message);
1782         assert(m);
1783
1784         /* Anyone can call this method */
1785
1786         r = mac_selinux_access_check(message, "status", error);
1787         if (r < 0)
1788                 return r;
1789
1790         r = sd_bus_message_new_method_return(message, &reply);
1791         if (r < 0)
1792                 return r;
1793
1794         h = hashmap_new(&string_hash_ops);
1795         if (!h)
1796                 return -ENOMEM;
1797
1798         r = unit_file_get_list(m->unit_file_scope, NULL, h, states, patterns);
1799         if (r < 0)
1800                 goto fail;
1801
1802         r = sd_bus_message_open_container(reply, 'a', "(ss)");
1803         if (r < 0)
1804                 goto fail;
1805
1806         HASHMAP_FOREACH(item, h, i) {
1807
1808                 r = sd_bus_message_append(reply, "(ss)", item->path, unit_file_state_to_string(item->state));
1809                 if (r < 0)
1810                         goto fail;
1811         }
1812
1813         unit_file_list_free(h);
1814
1815         r = sd_bus_message_close_container(reply);
1816         if (r < 0)
1817                 return r;
1818
1819         return sd_bus_send(NULL, reply, NULL);
1820
1821 fail:
1822         unit_file_list_free(h);
1823         return r;
1824 }
1825
1826 static int method_list_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1827         return list_unit_files_by_patterns(message, userdata, error, NULL, NULL);
1828 }
1829
1830 static int method_list_unit_files_by_patterns(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1831         _cleanup_strv_free_ char **states = NULL;
1832         _cleanup_strv_free_ char **patterns = NULL;
1833         int r;
1834
1835         r = sd_bus_message_read_strv(message, &states);
1836         if (r < 0)
1837                 return r;
1838
1839         r = sd_bus_message_read_strv(message, &patterns);
1840         if (r < 0)
1841                 return r;
1842
1843         return list_unit_files_by_patterns(message, userdata, error, states, patterns);
1844 }
1845
1846 static int method_get_unit_file_state(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1847         Manager *m = userdata;
1848         const char *name;
1849         UnitFileState state;
1850         int r;
1851
1852         assert(message);
1853         assert(m);
1854
1855         /* Anyone can call this method */
1856
1857         r = mac_selinux_access_check(message, "status", error);
1858         if (r < 0)
1859                 return r;
1860
1861         r = sd_bus_message_read(message, "s", &name);
1862         if (r < 0)
1863                 return r;
1864
1865         r = unit_file_get_state(m->unit_file_scope, NULL, name, &state);
1866         if (r < 0)
1867                 return r;
1868
1869         return sd_bus_reply_method_return(message, "s", unit_file_state_to_string(state));
1870 }
1871
1872 static int method_get_default_target(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1873         _cleanup_free_ char *default_target = NULL;
1874         Manager *m = userdata;
1875         int r;
1876
1877         assert(message);
1878         assert(m);
1879
1880         /* Anyone can call this method */
1881
1882         r = mac_selinux_access_check(message, "status", error);
1883         if (r < 0)
1884                 return r;
1885
1886         r = unit_file_get_default(m->unit_file_scope, NULL, &default_target);
1887         if (r < 0)
1888                 return r;
1889
1890         return sd_bus_reply_method_return(message, "s", default_target);
1891 }
1892
1893 static int send_unit_files_changed(sd_bus *bus, void *userdata) {
1894         _cleanup_(sd_bus_message_unrefp) sd_bus_message *message = NULL;
1895         int r;
1896
1897         assert(bus);
1898
1899         r = sd_bus_message_new_signal(bus, &message, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "UnitFilesChanged");
1900         if (r < 0)
1901                 return r;
1902
1903         return sd_bus_send(bus, message, NULL);
1904 }
1905
1906 /* Create an error reply, using the error information from changes[]
1907  * if possible, and fall back to generating an error from error code c.
1908  * The error message only describes the first error.
1909  *
1910  * Coordinate with unit_file_dump_changes() in install.c.
1911  */
1912 static int install_error(
1913                 sd_bus_error *error,
1914                 int c,
1915                 UnitFileChange *changes,
1916                 size_t n_changes) {
1917
1918         size_t i;
1919         int r;
1920
1921         for (i = 0; i < n_changes; i++)
1922
1923                 switch(changes[i].type) {
1924
1925                 case 0 ... INT_MAX:
1926                         continue;
1927
1928                 case -EEXIST:
1929                         if (changes[i].source)
1930                                 r = sd_bus_error_setf(error, BUS_ERROR_UNIT_EXISTS,
1931                                                       "File %s already exists and is a symlink to %s.",
1932                                                       changes[i].path, changes[i].source);
1933                         else
1934                                 r = sd_bus_error_setf(error, BUS_ERROR_UNIT_EXISTS,
1935                                                       "File %s already exists.",
1936                                                       changes[i].path);
1937                         goto found;
1938
1939                 case -ERFKILL:
1940                         r = sd_bus_error_setf(error, BUS_ERROR_UNIT_MASKED,
1941                                               "Unit file %s is masked.", changes[i].path);
1942                         goto found;
1943
1944                 case -EADDRNOTAVAIL:
1945                         r = sd_bus_error_setf(error, BUS_ERROR_UNIT_GENERATED,
1946                                               "Unit %s is transient or generated.", changes[i].path);
1947                         goto found;
1948
1949                 case -ELOOP:
1950                         r = sd_bus_error_setf(error, BUS_ERROR_UNIT_LINKED,
1951                                               "Refusing to operate on linked unit file %s", changes[i].path);
1952                         goto found;
1953
1954                 case -ENOENT:
1955                         r = sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit file %s does not exist.", changes[i].path);
1956                         goto found;
1957
1958                 default:
1959                         r = sd_bus_error_set_errnof(error, changes[i].type, "File %s: %m", changes[i].path);
1960                         goto found;
1961                 }
1962
1963         r = c < 0 ? c : -EINVAL;
1964
1965  found:
1966         unit_file_changes_free(changes, n_changes);
1967         return r;
1968 }
1969
1970 static int reply_unit_file_changes_and_free(
1971                 Manager *m,
1972                 sd_bus_message *message,
1973                 int carries_install_info,
1974                 UnitFileChange *changes,
1975                 size_t n_changes,
1976                 sd_bus_error *error) {
1977
1978         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1979         bool bad = false, good = false;
1980         size_t i;
1981         int r;
1982
1983         if (unit_file_changes_have_modification(changes, n_changes)) {
1984                 r = bus_foreach_bus(m, NULL, send_unit_files_changed, NULL);
1985                 if (r < 0)
1986                         log_debug_errno(r, "Failed to send UnitFilesChanged signal: %m");
1987         }
1988
1989         r = sd_bus_message_new_method_return(message, &reply);
1990         if (r < 0)
1991                 goto fail;
1992
1993         if (carries_install_info >= 0) {
1994                 r = sd_bus_message_append(reply, "b", carries_install_info);
1995                 if (r < 0)
1996                         goto fail;
1997         }
1998
1999         r = sd_bus_message_open_container(reply, 'a', "(sss)");
2000         if (r < 0)
2001                 goto fail;
2002
2003         for (i = 0; i < n_changes; i++) {
2004
2005                 if (changes[i].type < 0) {
2006                         bad = true;
2007                         continue;
2008                 }
2009
2010                 r = sd_bus_message_append(
2011                                 reply, "(sss)",
2012                                 unit_file_change_type_to_string(changes[i].type),
2013                                 changes[i].path,
2014                                 changes[i].source);
2015                 if (r < 0)
2016                         goto fail;
2017
2018                 good = true;
2019         }
2020
2021         /* If there was a failed change, and no successful change, then return the first failure as proper method call
2022          * error. */
2023         if (bad && !good)
2024                 return install_error(error, 0, changes, n_changes);
2025
2026         r = sd_bus_message_close_container(reply);
2027         if (r < 0)
2028                 goto fail;
2029
2030         unit_file_changes_free(changes, n_changes);
2031         return sd_bus_send(NULL, reply, NULL);
2032
2033 fail:
2034         unit_file_changes_free(changes, n_changes);
2035         return r;
2036 }
2037
2038 static int method_enable_unit_files_generic(
2039                 sd_bus_message *message,
2040                 Manager *m,
2041                 int (*call)(UnitFileScope scope, UnitFileFlags flags, const char *root_dir, char *files[], UnitFileChange **changes, size_t *n_changes),
2042                 bool carries_install_info,
2043                 sd_bus_error *error) {
2044
2045         _cleanup_strv_free_ char **l = NULL;
2046         UnitFileChange *changes = NULL;
2047         size_t n_changes = 0;
2048         UnitFileFlags flags;
2049         int runtime, force, r;
2050
2051         assert(message);
2052         assert(m);
2053
2054         r = sd_bus_message_read_strv(message, &l);
2055         if (r < 0)
2056                 return r;
2057
2058         r = sd_bus_message_read(message, "bb", &runtime, &force);
2059         if (r < 0)
2060                 return r;
2061
2062         flags = unit_file_bools_to_flags(runtime, force);
2063
2064         r = bus_verify_manage_unit_files_async(m, message, error);
2065         if (r < 0)
2066                 return r;
2067         if (r == 0)
2068                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2069
2070         r = call(m->unit_file_scope, flags, NULL, l, &changes, &n_changes);
2071         if (r < 0)
2072                 return install_error(error, r, changes, n_changes);
2073
2074         return reply_unit_file_changes_and_free(m, message, carries_install_info ? r : -1, changes, n_changes, error);
2075 }
2076
2077 static int method_enable_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2078         return method_enable_unit_files_generic(message, userdata, unit_file_enable, true, error);
2079 }
2080
2081 static int method_reenable_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2082         return method_enable_unit_files_generic(message, userdata, unit_file_reenable, true, error);
2083 }
2084
2085 static int method_link_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2086         return method_enable_unit_files_generic(message, userdata, unit_file_link, false, error);
2087 }
2088
2089 static int unit_file_preset_without_mode(UnitFileScope scope, UnitFileFlags flags, const char *root_dir, char **files, UnitFileChange **changes, size_t *n_changes) {
2090         return unit_file_preset(scope, flags, root_dir, files, UNIT_FILE_PRESET_FULL, changes, n_changes);
2091 }
2092
2093 static int method_preset_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2094         return method_enable_unit_files_generic(message, userdata, unit_file_preset_without_mode, true, error);
2095 }
2096
2097 static int method_mask_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2098         return method_enable_unit_files_generic(message, userdata, unit_file_mask, false, error);
2099 }
2100
2101 static int method_preset_unit_files_with_mode(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2102
2103         _cleanup_strv_free_ char **l = NULL;
2104         UnitFileChange *changes = NULL;
2105         size_t n_changes = 0;
2106         Manager *m = userdata;
2107         UnitFilePresetMode mm;
2108         int runtime, force, r;
2109         UnitFileFlags flags;
2110         const char *mode;
2111
2112         assert(message);
2113         assert(m);
2114
2115         r = sd_bus_message_read_strv(message, &l);
2116         if (r < 0)
2117                 return r;
2118
2119         r = sd_bus_message_read(message, "sbb", &mode, &runtime, &force);
2120         if (r < 0)
2121                 return r;
2122
2123         flags = unit_file_bools_to_flags(runtime, force);
2124
2125         if (isempty(mode))
2126                 mm = UNIT_FILE_PRESET_FULL;
2127         else {
2128                 mm = unit_file_preset_mode_from_string(mode);
2129                 if (mm < 0)
2130                         return -EINVAL;
2131         }
2132
2133         r = bus_verify_manage_unit_files_async(m, message, error);
2134         if (r < 0)
2135                 return r;
2136         if (r == 0)
2137                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2138
2139         r = unit_file_preset(m->unit_file_scope, flags, NULL, l, mm, &changes, &n_changes);
2140         if (r < 0)
2141                 return install_error(error, r, changes, n_changes);
2142
2143         return reply_unit_file_changes_and_free(m, message, r, changes, n_changes, error);
2144 }
2145
2146 static int method_disable_unit_files_generic(
2147                 sd_bus_message *message,
2148                 Manager *m,
2149                 int (*call)(UnitFileScope scope, UnitFileFlags flags, const char *root_dir, char *files[], UnitFileChange **changes, size_t *n_changes),
2150                 sd_bus_error *error) {
2151
2152         _cleanup_strv_free_ char **l = NULL;
2153         UnitFileChange *changes = NULL;
2154         size_t n_changes = 0;
2155         int r, runtime;
2156
2157         assert(message);
2158         assert(m);
2159
2160         r = sd_bus_message_read_strv(message, &l);
2161         if (r < 0)
2162                 return r;
2163
2164         r = sd_bus_message_read(message, "b", &runtime);
2165         if (r < 0)
2166                 return r;
2167
2168         r = bus_verify_manage_unit_files_async(m, message, error);
2169         if (r < 0)
2170                 return r;
2171         if (r == 0)
2172                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2173
2174         r = call(m->unit_file_scope, runtime ? UNIT_FILE_RUNTIME : 0, NULL, l, &changes, &n_changes);
2175         if (r < 0)
2176                 return install_error(error, r, changes, n_changes);
2177
2178         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2179 }
2180
2181 static int method_disable_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2182         return method_disable_unit_files_generic(message, userdata, unit_file_disable, error);
2183 }
2184
2185 static int method_unmask_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2186         return method_disable_unit_files_generic(message, userdata, unit_file_unmask, error);
2187 }
2188
2189 static int method_revert_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2190         _cleanup_strv_free_ char **l = NULL;
2191         UnitFileChange *changes = NULL;
2192         size_t n_changes = 0;
2193         Manager *m = userdata;
2194         int r;
2195
2196         assert(message);
2197         assert(m);
2198
2199         r = sd_bus_message_read_strv(message, &l);
2200         if (r < 0)
2201                 return r;
2202
2203         r = bus_verify_manage_unit_files_async(m, message, error);
2204         if (r < 0)
2205                 return r;
2206         if (r == 0)
2207                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2208
2209         r = unit_file_revert(m->unit_file_scope, NULL, l, &changes, &n_changes);
2210         if (r < 0)
2211                 return install_error(error, r, changes, n_changes);
2212
2213         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2214 }
2215
2216 static int method_set_default_target(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2217         UnitFileChange *changes = NULL;
2218         size_t n_changes = 0;
2219         Manager *m = userdata;
2220         const char *name;
2221         int force, r;
2222
2223         assert(message);
2224         assert(m);
2225
2226         r = mac_selinux_access_check(message, "enable", error);
2227         if (r < 0)
2228                 return r;
2229
2230         r = sd_bus_message_read(message, "sb", &name, &force);
2231         if (r < 0)
2232                 return r;
2233
2234         r = bus_verify_manage_unit_files_async(m, message, error);
2235         if (r < 0)
2236                 return r;
2237         if (r == 0)
2238                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2239
2240         r = unit_file_set_default(m->unit_file_scope, force ? UNIT_FILE_FORCE : 0, NULL, name, &changes, &n_changes);
2241         if (r < 0)
2242                 return install_error(error, r, changes, n_changes);
2243
2244         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2245 }
2246
2247 static int method_preset_all_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2248         UnitFileChange *changes = NULL;
2249         size_t n_changes = 0;
2250         Manager *m = userdata;
2251         UnitFilePresetMode mm;
2252         const char *mode;
2253         UnitFileFlags flags;
2254         int force, runtime, r;
2255
2256         assert(message);
2257         assert(m);
2258
2259         r = mac_selinux_access_check(message, "enable", error);
2260         if (r < 0)
2261                 return r;
2262
2263         r = sd_bus_message_read(message, "sbb", &mode, &runtime, &force);
2264         if (r < 0)
2265                 return r;
2266
2267         flags = unit_file_bools_to_flags(runtime, force);
2268
2269         if (isempty(mode))
2270                 mm = UNIT_FILE_PRESET_FULL;
2271         else {
2272                 mm = unit_file_preset_mode_from_string(mode);
2273                 if (mm < 0)
2274                         return -EINVAL;
2275         }
2276
2277         r = bus_verify_manage_unit_files_async(m, message, error);
2278         if (r < 0)
2279                 return r;
2280         if (r == 0)
2281                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2282
2283         r = unit_file_preset_all(m->unit_file_scope, flags, NULL, mm, &changes, &n_changes);
2284         if (r < 0)
2285                 return install_error(error, r, changes, n_changes);
2286
2287         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2288 }
2289
2290 static int method_add_dependency_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2291         _cleanup_strv_free_ char **l = NULL;
2292         Manager *m = userdata;
2293         UnitFileChange *changes = NULL;
2294         size_t n_changes = 0;
2295         int runtime, force, r;
2296         char *target, *type;
2297         UnitDependency dep;
2298         UnitFileFlags flags;
2299
2300         assert(message);
2301         assert(m);
2302
2303         r = bus_verify_manage_unit_files_async(m, message, error);
2304         if (r < 0)
2305                 return r;
2306         if (r == 0)
2307                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2308
2309         r = sd_bus_message_read_strv(message, &l);
2310         if (r < 0)
2311                 return r;
2312
2313         r = sd_bus_message_read(message, "ssbb", &target, &type, &runtime, &force);
2314         if (r < 0)
2315                 return r;
2316
2317         flags = unit_file_bools_to_flags(runtime, force);
2318
2319         dep = unit_dependency_from_string(type);
2320         if (dep < 0)
2321                 return -EINVAL;
2322
2323         r = unit_file_add_dependency(m->unit_file_scope, flags, NULL, l, target, dep, &changes, &n_changes);
2324         if (r < 0)
2325                 return install_error(error, r, changes, n_changes);
2326
2327         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2328 }
2329
2330 static int method_get_unit_file_links(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2331         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
2332         UnitFileChange *changes = NULL;
2333         size_t n_changes = 0, i;
2334         UnitFileFlags flags;
2335         const char *name;
2336         char **p;
2337         int runtime, r;
2338
2339         r = sd_bus_message_read(message, "sb", &name, &runtime);
2340         if (r < 0)
2341                 return r;
2342
2343         r = sd_bus_message_new_method_return(message, &reply);
2344         if (r < 0)
2345                 return r;
2346
2347         r = sd_bus_message_open_container(reply, SD_BUS_TYPE_ARRAY, "s");
2348         if (r < 0)
2349                 return r;
2350
2351         p = STRV_MAKE(name);
2352         flags = UNIT_FILE_DRY_RUN |
2353                 (runtime ? UNIT_FILE_RUNTIME : 0);
2354
2355         r = unit_file_disable(UNIT_FILE_SYSTEM, flags, NULL, p, &changes, &n_changes);
2356         if (r < 0)
2357                 return log_error_errno(r, "Failed to get file links for %s: %m", name);
2358
2359         for (i = 0; i < n_changes; i++)
2360                 if (changes[i].type == UNIT_FILE_UNLINK) {
2361                         r = sd_bus_message_append(reply, "s", changes[i].path);
2362                         if (r < 0)
2363                                 return r;
2364                 }
2365
2366         r = sd_bus_message_close_container(reply);
2367         if (r < 0)
2368                 return r;
2369
2370         return sd_bus_send(NULL, reply, NULL);
2371 }
2372
2373 static int method_get_job_waiting(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2374         Manager *m = userdata;
2375         uint32_t id;
2376         Job *j;
2377         int r;
2378
2379         assert(message);
2380         assert(m);
2381
2382         r = sd_bus_message_read(message, "u", &id);
2383         if (r < 0)
2384                 return r;
2385
2386         j = manager_get_job(m, id);
2387         if (!j)
2388                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
2389
2390         return bus_job_method_get_waiting_jobs(message, j, error);
2391 }
2392
2393 const sd_bus_vtable bus_manager_vtable[] = {
2394         SD_BUS_VTABLE_START(0),
2395
2396         SD_BUS_PROPERTY("Version", "s", property_get_version, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2397         SD_BUS_PROPERTY("Features", "s", property_get_features, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2398         SD_BUS_PROPERTY("Virtualization", "s", property_get_virtualization, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2399         SD_BUS_PROPERTY("Architecture", "s", property_get_architecture, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2400         SD_BUS_PROPERTY("Tainted", "s", property_get_tainted, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2401         BUS_PROPERTY_DUAL_TIMESTAMP("FirmwareTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_FIRMWARE]), SD_BUS_VTABLE_PROPERTY_CONST),
2402         BUS_PROPERTY_DUAL_TIMESTAMP("LoaderTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_LOADER]), SD_BUS_VTABLE_PROPERTY_CONST),
2403         BUS_PROPERTY_DUAL_TIMESTAMP("KernelTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_KERNEL]), SD_BUS_VTABLE_PROPERTY_CONST),
2404         BUS_PROPERTY_DUAL_TIMESTAMP("InitRDTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_INITRD]), SD_BUS_VTABLE_PROPERTY_CONST),
2405         BUS_PROPERTY_DUAL_TIMESTAMP("UserspaceTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_USERSPACE]), SD_BUS_VTABLE_PROPERTY_CONST),
2406         BUS_PROPERTY_DUAL_TIMESTAMP("FinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2407         BUS_PROPERTY_DUAL_TIMESTAMP("SecurityStartTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_SECURITY_START]), SD_BUS_VTABLE_PROPERTY_CONST),
2408         BUS_PROPERTY_DUAL_TIMESTAMP("SecurityFinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_SECURITY_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2409         BUS_PROPERTY_DUAL_TIMESTAMP("GeneratorsStartTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_GENERATORS_START]), SD_BUS_VTABLE_PROPERTY_CONST),
2410         BUS_PROPERTY_DUAL_TIMESTAMP("GeneratorsFinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_GENERATORS_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2411         BUS_PROPERTY_DUAL_TIMESTAMP("UnitsLoadStartTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_UNITS_LOAD_START]), SD_BUS_VTABLE_PROPERTY_CONST),
2412         BUS_PROPERTY_DUAL_TIMESTAMP("UnitsLoadFinishTimestamp", offsetof(Manager, timestamps[MANAGER_TIMESTAMP_UNITS_LOAD_FINISH]), SD_BUS_VTABLE_PROPERTY_CONST),
2413         SD_BUS_WRITABLE_PROPERTY("LogLevel", "s", property_get_log_level, property_set_log_level, 0, 0),
2414         SD_BUS_WRITABLE_PROPERTY("LogTarget", "s", property_get_log_target, property_set_log_target, 0, 0),
2415         SD_BUS_PROPERTY("NNames", "u", property_get_hashmap_size, offsetof(Manager, units), 0),
2416         SD_BUS_PROPERTY("NFailedUnits", "u", property_get_set_size, offsetof(Manager, failed_units), SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
2417         SD_BUS_PROPERTY("NJobs", "u", property_get_hashmap_size, offsetof(Manager, jobs), 0),
2418         SD_BUS_PROPERTY("NInstalledJobs", "u", bus_property_get_unsigned, offsetof(Manager, n_installed_jobs), 0),
2419         SD_BUS_PROPERTY("NFailedJobs", "u", bus_property_get_unsigned, offsetof(Manager, n_failed_jobs), 0),
2420         SD_BUS_PROPERTY("Progress", "d", property_get_progress, 0, 0),
2421         SD_BUS_PROPERTY("Environment", "as", NULL, offsetof(Manager, environment), 0),
2422         SD_BUS_PROPERTY("ConfirmSpawn", "b", bus_property_get_bool, offsetof(Manager, confirm_spawn), SD_BUS_VTABLE_PROPERTY_CONST),
2423         SD_BUS_PROPERTY("ShowStatus", "b", property_get_show_status, 0, 0),
2424         SD_BUS_PROPERTY("UnitPath", "as", NULL, offsetof(Manager, lookup_paths.search_path), SD_BUS_VTABLE_PROPERTY_CONST),
2425         SD_BUS_PROPERTY("DefaultStandardOutput", "s", bus_property_get_exec_output, offsetof(Manager, default_std_output), SD_BUS_VTABLE_PROPERTY_CONST),
2426         SD_BUS_PROPERTY("DefaultStandardError", "s", bus_property_get_exec_output, offsetof(Manager, default_std_output), SD_BUS_VTABLE_PROPERTY_CONST),
2427         SD_BUS_WRITABLE_PROPERTY("RuntimeWatchdogUSec", "t", bus_property_get_usec, property_set_runtime_watchdog, offsetof(Manager, runtime_watchdog), 0),
2428         SD_BUS_WRITABLE_PROPERTY("ShutdownWatchdogUSec", "t", bus_property_get_usec, bus_property_set_usec, offsetof(Manager, shutdown_watchdog), 0),
2429         SD_BUS_WRITABLE_PROPERTY("ServiceWatchdogs", "b", bus_property_get_bool, bus_property_set_bool, offsetof(Manager, service_watchdogs), 0),
2430         SD_BUS_PROPERTY("ControlGroup", "s", NULL, offsetof(Manager, cgroup_root), 0),
2431         SD_BUS_PROPERTY("SystemState", "s", property_get_system_state, 0, 0),
2432         SD_BUS_PROPERTY("ExitCode", "y", bus_property_get_unsigned, offsetof(Manager, return_value), 0),
2433         SD_BUS_PROPERTY("DefaultTimerAccuracyUSec", "t", bus_property_get_usec, offsetof(Manager, default_timer_accuracy_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2434         SD_BUS_PROPERTY("DefaultTimeoutStartUSec", "t", bus_property_get_usec, offsetof(Manager, default_timeout_start_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2435         SD_BUS_PROPERTY("DefaultTimeoutStopUSec", "t", bus_property_get_usec, offsetof(Manager, default_timeout_stop_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2436         SD_BUS_PROPERTY("DefaultRestartUSec", "t", bus_property_get_usec, offsetof(Manager, default_restart_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2437         SD_BUS_PROPERTY("DefaultStartLimitIntervalUSec", "t", bus_property_get_usec, offsetof(Manager, default_start_limit_interval), SD_BUS_VTABLE_PROPERTY_CONST),
2438         /* The following two items are obsolete alias */
2439         SD_BUS_PROPERTY("DefaultStartLimitIntervalSec", "t", bus_property_get_usec, offsetof(Manager, default_start_limit_interval), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
2440         SD_BUS_PROPERTY("DefaultStartLimitInterval", "t", bus_property_get_usec, offsetof(Manager, default_start_limit_interval), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN),
2441         SD_BUS_PROPERTY("DefaultStartLimitBurst", "u", bus_property_get_unsigned, offsetof(Manager, default_start_limit_burst), SD_BUS_VTABLE_PROPERTY_CONST),
2442         SD_BUS_PROPERTY("DefaultCPUAccounting", "b", bus_property_get_bool, offsetof(Manager, default_cpu_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
2443         SD_BUS_PROPERTY("DefaultBlockIOAccounting", "b", bus_property_get_bool, offsetof(Manager, default_blockio_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
2444         SD_BUS_PROPERTY("DefaultMemoryAccounting", "b", bus_property_get_bool, offsetof(Manager, default_memory_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
2445         SD_BUS_PROPERTY("DefaultTasksAccounting", "b", bus_property_get_bool, offsetof(Manager, default_tasks_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
2446         SD_BUS_PROPERTY("DefaultLimitCPU", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CPU]), SD_BUS_VTABLE_PROPERTY_CONST),
2447         SD_BUS_PROPERTY("DefaultLimitCPUSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CPU]), SD_BUS_VTABLE_PROPERTY_CONST),
2448         SD_BUS_PROPERTY("DefaultLimitFSIZE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_FSIZE]), SD_BUS_VTABLE_PROPERTY_CONST),
2449         SD_BUS_PROPERTY("DefaultLimitFSIZESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_FSIZE]), SD_BUS_VTABLE_PROPERTY_CONST),
2450         SD_BUS_PROPERTY("DefaultLimitDATA", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_DATA]), SD_BUS_VTABLE_PROPERTY_CONST),
2451         SD_BUS_PROPERTY("DefaultLimitDATASoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_DATA]), SD_BUS_VTABLE_PROPERTY_CONST),
2452         SD_BUS_PROPERTY("DefaultLimitSTACK", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_STACK]), SD_BUS_VTABLE_PROPERTY_CONST),
2453         SD_BUS_PROPERTY("DefaultLimitSTACKSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_STACK]), SD_BUS_VTABLE_PROPERTY_CONST),
2454         SD_BUS_PROPERTY("DefaultLimitCORE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CORE]), SD_BUS_VTABLE_PROPERTY_CONST),
2455         SD_BUS_PROPERTY("DefaultLimitCORESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CORE]), SD_BUS_VTABLE_PROPERTY_CONST),
2456         SD_BUS_PROPERTY("DefaultLimitRSS", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RSS]), SD_BUS_VTABLE_PROPERTY_CONST),
2457         SD_BUS_PROPERTY("DefaultLimitRSSSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RSS]), SD_BUS_VTABLE_PROPERTY_CONST),
2458         SD_BUS_PROPERTY("DefaultLimitNOFILE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NOFILE]), SD_BUS_VTABLE_PROPERTY_CONST),
2459         SD_BUS_PROPERTY("DefaultLimitNOFILESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NOFILE]), SD_BUS_VTABLE_PROPERTY_CONST),
2460         SD_BUS_PROPERTY("DefaultLimitAS", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_AS]), SD_BUS_VTABLE_PROPERTY_CONST),
2461         SD_BUS_PROPERTY("DefaultLimitASSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_AS]), SD_BUS_VTABLE_PROPERTY_CONST),
2462         SD_BUS_PROPERTY("DefaultLimitNPROC", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NPROC]), SD_BUS_VTABLE_PROPERTY_CONST),
2463         SD_BUS_PROPERTY("DefaultLimitNPROCSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NPROC]), SD_BUS_VTABLE_PROPERTY_CONST),
2464         SD_BUS_PROPERTY("DefaultLimitMEMLOCK", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MEMLOCK]), SD_BUS_VTABLE_PROPERTY_CONST),
2465         SD_BUS_PROPERTY("DefaultLimitMEMLOCKSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MEMLOCK]), SD_BUS_VTABLE_PROPERTY_CONST),
2466         SD_BUS_PROPERTY("DefaultLimitLOCKS", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_LOCKS]), SD_BUS_VTABLE_PROPERTY_CONST),
2467         SD_BUS_PROPERTY("DefaultLimitLOCKSSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_LOCKS]), SD_BUS_VTABLE_PROPERTY_CONST),
2468         SD_BUS_PROPERTY("DefaultLimitSIGPENDING", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_SIGPENDING]), SD_BUS_VTABLE_PROPERTY_CONST),
2469         SD_BUS_PROPERTY("DefaultLimitSIGPENDINGSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_SIGPENDING]), SD_BUS_VTABLE_PROPERTY_CONST),
2470         SD_BUS_PROPERTY("DefaultLimitMSGQUEUE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MSGQUEUE]), SD_BUS_VTABLE_PROPERTY_CONST),
2471         SD_BUS_PROPERTY("DefaultLimitMSGQUEUESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MSGQUEUE]), SD_BUS_VTABLE_PROPERTY_CONST),
2472         SD_BUS_PROPERTY("DefaultLimitNICE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NICE]), SD_BUS_VTABLE_PROPERTY_CONST),
2473         SD_BUS_PROPERTY("DefaultLimitNICESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NICE]), SD_BUS_VTABLE_PROPERTY_CONST),
2474         SD_BUS_PROPERTY("DefaultLimitRTPRIO", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTPRIO]), SD_BUS_VTABLE_PROPERTY_CONST),
2475         SD_BUS_PROPERTY("DefaultLimitRTPRIOSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTPRIO]), SD_BUS_VTABLE_PROPERTY_CONST),
2476         SD_BUS_PROPERTY("DefaultLimitRTTIME", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTTIME]), SD_BUS_VTABLE_PROPERTY_CONST),
2477         SD_BUS_PROPERTY("DefaultLimitRTTIMESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTTIME]), SD_BUS_VTABLE_PROPERTY_CONST),
2478         SD_BUS_PROPERTY("DefaultTasksMax", "t", NULL, offsetof(Manager, default_tasks_max), SD_BUS_VTABLE_PROPERTY_CONST),
2479         SD_BUS_PROPERTY("TimerSlackNSec", "t", property_get_timer_slack_nsec, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2480
2481         SD_BUS_METHOD("GetUnit", "s", "o", method_get_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2482         SD_BUS_METHOD("GetUnitByPID", "u", "o", method_get_unit_by_pid, SD_BUS_VTABLE_UNPRIVILEGED),
2483         SD_BUS_METHOD("GetUnitByInvocationID", "ay", "o", method_get_unit_by_invocation_id, SD_BUS_VTABLE_UNPRIVILEGED),
2484         SD_BUS_METHOD("GetUnitByControlGroup", "s", "o", method_get_unit_by_control_group, SD_BUS_VTABLE_UNPRIVILEGED),
2485         SD_BUS_METHOD("LoadUnit", "s", "o", method_load_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2486         SD_BUS_METHOD("StartUnit", "ss", "o", method_start_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2487         SD_BUS_METHOD("StartUnitReplace", "sss", "o", method_start_unit_replace, SD_BUS_VTABLE_UNPRIVILEGED),
2488         SD_BUS_METHOD("StopUnit", "ss", "o", method_stop_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2489         SD_BUS_METHOD("ReloadUnit", "ss", "o", method_reload_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2490         SD_BUS_METHOD("RestartUnit", "ss", "o", method_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2491         SD_BUS_METHOD("TryRestartUnit", "ss", "o", method_try_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2492         SD_BUS_METHOD("ReloadOrRestartUnit", "ss", "o", method_reload_or_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2493         SD_BUS_METHOD("ReloadOrTryRestartUnit", "ss", "o", method_reload_or_try_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2494         SD_BUS_METHOD("KillUnit", "ssi", NULL, method_kill_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2495         SD_BUS_METHOD("ResetFailedUnit", "s", NULL, method_reset_failed_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2496         SD_BUS_METHOD("SetUnitProperties", "sba(sv)", NULL, method_set_unit_properties, SD_BUS_VTABLE_UNPRIVILEGED),
2497         SD_BUS_METHOD("RefUnit", "s", NULL, method_ref_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2498         SD_BUS_METHOD("UnrefUnit", "s", NULL, method_unref_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2499         SD_BUS_METHOD("StartTransientUnit", "ssa(sv)a(sa(sv))", "o", method_start_transient_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2500         SD_BUS_METHOD("GetUnitProcesses", "s", "a(sus)", method_get_unit_processes, SD_BUS_VTABLE_UNPRIVILEGED),
2501         SD_BUS_METHOD("AttachProcessesToUnit", "ssau", NULL, method_attach_processes_to_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2502         SD_BUS_METHOD("GetJob", "u", "o", method_get_job, SD_BUS_VTABLE_UNPRIVILEGED),
2503         SD_BUS_METHOD("GetJobAfter", "u", "a(usssoo)", method_get_job_waiting, SD_BUS_VTABLE_UNPRIVILEGED),
2504         SD_BUS_METHOD("GetJobBefore", "u", "a(usssoo)", method_get_job_waiting, SD_BUS_VTABLE_UNPRIVILEGED),
2505         SD_BUS_METHOD("CancelJob", "u", NULL, method_cancel_job, SD_BUS_VTABLE_UNPRIVILEGED),
2506         SD_BUS_METHOD("ClearJobs", NULL, NULL, method_clear_jobs, SD_BUS_VTABLE_UNPRIVILEGED),
2507         SD_BUS_METHOD("ResetFailed", NULL, NULL, method_reset_failed, SD_BUS_VTABLE_UNPRIVILEGED),
2508         SD_BUS_METHOD("ListUnits", NULL, "a(ssssssouso)", method_list_units, SD_BUS_VTABLE_UNPRIVILEGED),
2509         SD_BUS_METHOD("ListUnitsFiltered", "as", "a(ssssssouso)", method_list_units_filtered, SD_BUS_VTABLE_UNPRIVILEGED),
2510         SD_BUS_METHOD("ListUnitsByPatterns", "asas", "a(ssssssouso)", method_list_units_by_patterns, SD_BUS_VTABLE_UNPRIVILEGED),
2511         SD_BUS_METHOD("ListUnitsByNames", "as", "a(ssssssouso)", method_list_units_by_names, SD_BUS_VTABLE_UNPRIVILEGED),
2512         SD_BUS_METHOD("ListJobs", NULL, "a(usssoo)", method_list_jobs, SD_BUS_VTABLE_UNPRIVILEGED),
2513         SD_BUS_METHOD("Subscribe", NULL, NULL, method_subscribe, SD_BUS_VTABLE_UNPRIVILEGED),
2514         SD_BUS_METHOD("Unsubscribe", NULL, NULL, method_unsubscribe, SD_BUS_VTABLE_UNPRIVILEGED),
2515         SD_BUS_METHOD("Dump", NULL, "s", method_dump, SD_BUS_VTABLE_UNPRIVILEGED),
2516         SD_BUS_METHOD("DumpByFileDescriptor", NULL, "h", method_dump_by_fd, SD_BUS_VTABLE_UNPRIVILEGED),
2517         SD_BUS_METHOD("CreateSnapshot", "sb", "o", method_refuse_snapshot, SD_BUS_VTABLE_UNPRIVILEGED|SD_BUS_VTABLE_HIDDEN),
2518         SD_BUS_METHOD("RemoveSnapshot", "s", NULL, method_refuse_snapshot, SD_BUS_VTABLE_UNPRIVILEGED|SD_BUS_VTABLE_HIDDEN),
2519         SD_BUS_METHOD("Reload", NULL, NULL, method_reload, SD_BUS_VTABLE_UNPRIVILEGED),
2520         SD_BUS_METHOD("Reexecute", NULL, NULL, method_reexecute, SD_BUS_VTABLE_UNPRIVILEGED),
2521         SD_BUS_METHOD("Exit", NULL, NULL, method_exit, 0),
2522         SD_BUS_METHOD("Reboot", NULL, NULL, method_reboot, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2523         SD_BUS_METHOD("PowerOff", NULL, NULL, method_poweroff, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2524         SD_BUS_METHOD("Halt", NULL, NULL, method_halt, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2525         SD_BUS_METHOD("KExec", NULL, NULL, method_kexec, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2526         SD_BUS_METHOD("SwitchRoot", "ss", NULL, method_switch_root, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2527         SD_BUS_METHOD("SetEnvironment", "as", NULL, method_set_environment, SD_BUS_VTABLE_UNPRIVILEGED),
2528         SD_BUS_METHOD("UnsetEnvironment", "as", NULL, method_unset_environment, SD_BUS_VTABLE_UNPRIVILEGED),
2529         SD_BUS_METHOD("UnsetAndSetEnvironment", "asas", NULL, method_unset_and_set_environment, SD_BUS_VTABLE_UNPRIVILEGED),
2530         SD_BUS_METHOD("ListUnitFiles", NULL, "a(ss)", method_list_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2531         SD_BUS_METHOD("ListUnitFilesByPatterns", "asas", "a(ss)", method_list_unit_files_by_patterns, SD_BUS_VTABLE_UNPRIVILEGED),
2532         SD_BUS_METHOD("GetUnitFileState", "s", "s", method_get_unit_file_state, SD_BUS_VTABLE_UNPRIVILEGED),
2533         SD_BUS_METHOD("EnableUnitFiles", "asbb", "ba(sss)", method_enable_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2534         SD_BUS_METHOD("DisableUnitFiles", "asb", "a(sss)", method_disable_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2535         SD_BUS_METHOD("ReenableUnitFiles", "asbb", "ba(sss)", method_reenable_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2536         SD_BUS_METHOD("LinkUnitFiles", "asbb", "a(sss)", method_link_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2537         SD_BUS_METHOD("PresetUnitFiles", "asbb", "ba(sss)", method_preset_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2538         SD_BUS_METHOD("PresetUnitFilesWithMode", "assbb", "ba(sss)", method_preset_unit_files_with_mode, SD_BUS_VTABLE_UNPRIVILEGED),
2539         SD_BUS_METHOD("MaskUnitFiles", "asbb", "a(sss)", method_mask_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2540         SD_BUS_METHOD("UnmaskUnitFiles", "asb", "a(sss)", method_unmask_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2541         SD_BUS_METHOD("RevertUnitFiles", "as", "a(sss)", method_revert_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2542         SD_BUS_METHOD("SetDefaultTarget", "sb", "a(sss)", method_set_default_target, SD_BUS_VTABLE_UNPRIVILEGED),
2543         SD_BUS_METHOD("GetDefaultTarget", NULL, "s", method_get_default_target, SD_BUS_VTABLE_UNPRIVILEGED),
2544         SD_BUS_METHOD("PresetAllUnitFiles", "sbb", "a(sss)", method_preset_all_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2545         SD_BUS_METHOD("AddDependencyUnitFiles", "asssbb", "a(sss)", method_add_dependency_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2546         SD_BUS_METHOD("GetUnitFileLinks", "sb", "as", method_get_unit_file_links, SD_BUS_VTABLE_UNPRIVILEGED),
2547         SD_BUS_METHOD("SetExitCode", "y", NULL, method_set_exit_code, SD_BUS_VTABLE_UNPRIVILEGED),
2548         SD_BUS_METHOD("LookupDynamicUserByName", "s", "u", method_lookup_dynamic_user_by_name, SD_BUS_VTABLE_UNPRIVILEGED),
2549         SD_BUS_METHOD("LookupDynamicUserByUID", "u", "s", method_lookup_dynamic_user_by_uid, SD_BUS_VTABLE_UNPRIVILEGED),
2550         SD_BUS_METHOD("GetDynamicUsers", NULL, "a(us)", method_get_dynamic_users, SD_BUS_VTABLE_UNPRIVILEGED),
2551
2552         SD_BUS_SIGNAL("UnitNew", "so", 0),
2553         SD_BUS_SIGNAL("UnitRemoved", "so", 0),
2554         SD_BUS_SIGNAL("JobNew", "uos", 0),
2555         SD_BUS_SIGNAL("JobRemoved", "uoss", 0),
2556         SD_BUS_SIGNAL("StartupFinished", "tttttt", 0),
2557         SD_BUS_SIGNAL("UnitFilesChanged", NULL, 0),
2558         SD_BUS_SIGNAL("Reloading", "b", 0),
2559
2560         SD_BUS_VTABLE_END
2561 };
2562
2563 static int send_finished(sd_bus *bus, void *userdata) {
2564         _cleanup_(sd_bus_message_unrefp) sd_bus_message *message = NULL;
2565         usec_t *times = userdata;
2566         int r;
2567
2568         assert(bus);
2569         assert(times);
2570
2571         r = sd_bus_message_new_signal(bus, &message, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "StartupFinished");
2572         if (r < 0)
2573                 return r;
2574
2575         r = sd_bus_message_append(message, "tttttt", times[0], times[1], times[2], times[3], times[4], times[5]);
2576         if (r < 0)
2577                 return r;
2578
2579         return sd_bus_send(bus, message, NULL);
2580 }
2581
2582 void bus_manager_send_finished(
2583                 Manager *m,
2584                 usec_t firmware_usec,
2585                 usec_t loader_usec,
2586                 usec_t kernel_usec,
2587                 usec_t initrd_usec,
2588                 usec_t userspace_usec,
2589                 usec_t total_usec) {
2590
2591         int r;
2592
2593         assert(m);
2594
2595         r = bus_foreach_bus(
2596                         m,
2597                         NULL,
2598                         send_finished,
2599                         (usec_t[6]) {
2600                                 firmware_usec,
2601                                 loader_usec,
2602                                 kernel_usec,
2603                                 initrd_usec,
2604                                 userspace_usec,
2605                                 total_usec
2606                         });
2607         if (r < 0)
2608                 log_debug_errno(r, "Failed to send finished signal: %m");
2609 }
2610
2611 static int send_reloading(sd_bus *bus, void *userdata) {
2612         _cleanup_(sd_bus_message_unrefp) sd_bus_message *message = NULL;
2613         int r;
2614
2615         assert(bus);
2616
2617         r = sd_bus_message_new_signal(bus, &message, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "Reloading");
2618         if (r < 0)
2619                 return r;
2620
2621         r = sd_bus_message_append(message, "b", PTR_TO_INT(userdata));
2622         if (r < 0)
2623                 return r;
2624
2625         return sd_bus_send(bus, message, NULL);
2626 }
2627
2628 void bus_manager_send_reloading(Manager *m, bool active) {
2629         int r;
2630
2631         assert(m);
2632
2633         r = bus_foreach_bus(m, NULL, send_reloading, INT_TO_PTR(active));
2634         if (r < 0)
2635                 log_debug_errno(r, "Failed to send reloading signal: %m");
2636 }
2637
2638 static int send_changed_signal(sd_bus *bus, void *userdata) {
2639         assert(bus);
2640
2641         return sd_bus_emit_properties_changed_strv(bus,
2642                                                    "/org/freedesktop/systemd1",
2643                                                    "org.freedesktop.systemd1.Manager",
2644                                                    NULL);
2645 }
2646
2647 void bus_manager_send_change_signal(Manager *m) {
2648         int r;
2649
2650         assert(m);
2651
2652         r = bus_foreach_bus(m, NULL, send_changed_signal, NULL);
2653         if (r < 0)
2654                 log_debug_errno(r, "Failed to send manager change signal: %m");
2655 }