src/core/dbus-manager.c

   1 /***
   2   This file is part of systemd.
   3
   4   Copyright 2010 Lennart Poettering
   5
   6   systemd is free software; you can redistribute it and/or modify it
   7   under the terms of the GNU Lesser General Public License as published by
   8   the Free Software Foundation; either version 2.1 of the License, or
   9   (at your option) any later version.
  10
  11   systemd is distributed in the hope that it will be useful, but
  12   WITHOUT ANY WARRANTY; without even the implied warranty of
  13   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  14   Lesser General Public License for more details.
  15
  16   You should have received a copy of the GNU Lesser General Public License
  17   along with systemd; If not, see <http://www.gnu.org/licenses/>.
  18 ***/
  19
  20 #include <errno.h>
  21 #include <sys/prctl.h>
  22 #include <sys/statvfs.h>
  23 #include <unistd.h>
  24
  25 #include "alloc-util.h"
  26 #include "architecture.h"
  27 #include "build.h"
  28 #include "bus-common-errors.h"
  29 #include "clock-util.h"
  30 #include "dbus-execute.h"
  31 #include "dbus-job.h"
  32 #include "dbus-manager.h"
  33 #include "dbus-unit.h"
  34 #include "dbus.h"
  35 #include "env-util.h"
  36 #include "fd-util.h"
  37 #include "fileio.h"
  38 #include "format-util.h"
  39 #include "fs-util.h"
  40 #include "install.h"
  41 #include "log.h"
  42 #include "parse-util.h"
  43 #include "path-util.h"
  44 #include "selinux-access.h"
  45 #include "stat-util.h"
  46 #include "string-util.h"
  47 #include "strv.h"
  48 #include "syslog-util.h"
  49 #include "user-util.h"
  50 #include "virt.h"
  51 #include "watchdog.h"
  52
  53 /* Require 16MiB free in /run/systemd for reloading/reexecing. After all we need to serialize our state there, and if
  54  * we can't we'll fail badly. */
  55 #define RELOAD_DISK_SPACE_MIN (UINT64_C(16) * UINT64_C(1024) * UINT64_C(1024))
  56
  57 static UnitFileFlags unit_file_bools_to_flags(bool runtime, bool force) {
  58         return (runtime ? UNIT_FILE_RUNTIME : 0) |
  59                (force   ? UNIT_FILE_FORCE   : 0);
  60 }
  61
  62 static int property_get_version(
  63                 sd_bus *bus,
  64                 const char *path,
  65                 const char *interface,
  66                 const char *property,
  67                 sd_bus_message *reply,
  68                 void *userdata,
  69                 sd_bus_error *error) {
  70
  71         assert(bus);
  72         assert(reply);
  73
  74         return sd_bus_message_append(reply, "s", PACKAGE_VERSION);
  75 }
  76
  77 static int property_get_features(
  78                 sd_bus *bus,
  79                 const char *path,
  80                 const char *interface,
  81                 const char *property,
  82                 sd_bus_message *reply,
  83                 void *userdata,
  84                 sd_bus_error *error) {
  85
  86         assert(bus);
  87         assert(reply);
  88
  89         return sd_bus_message_append(reply, "s", SYSTEMD_FEATURES);
  90 }
  91
  92 static int property_get_virtualization(
  93                 sd_bus *bus,
  94                 const char *path,
  95                 const char *interface,
  96                 const char *property,
  97                 sd_bus_message *reply,
  98                 void *userdata,
  99                 sd_bus_error *error) {
 100
 101         int v;
 102
 103         assert(bus);
 104         assert(reply);
 105
 106         v = detect_virtualization();
 107
 108         /* Make sure to return the empty string when we detect no virtualization, as that is the API.
 109          *
 110          * https://github.com/systemd/systemd/issues/1423
 111          */
 112
 113         return sd_bus_message_append(
 114                         reply, "s",
 115                         v == VIRTUALIZATION_NONE ? "" : virtualization_to_string(v));
 116 }
 117
 118 static int property_get_architecture(
 119                 sd_bus *bus,
 120                 const char *path,
 121                 const char *interface,
 122                 const char *property,
 123                 sd_bus_message *reply,
 124                 void *userdata,
 125                 sd_bus_error *error) {
 126
 127         assert(bus);
 128         assert(reply);
 129
 130         return sd_bus_message_append(reply, "s", architecture_to_string(uname_architecture()));
 131 }
 132
 133 static int property_get_tainted(
 134                 sd_bus *bus,
 135                 const char *path,
 136                 const char *interface,
 137                 const char *property,
 138                 sd_bus_message *reply,
 139                 void *userdata,
 140                 sd_bus_error *error) {
 141
 142         char buf[sizeof("split-usr:cgroups-missing:local-hwclock:var-run-bad:")] = "", *e = buf;
 143         _cleanup_free_ char *destination = NULL;
 144         Manager *m = userdata;
 145         int r;
 146
 147         assert(bus);
 148         assert(reply);
 149         assert(m);
 150
 151         if (m->taint_usr)
 152                 e = stpcpy(e, "split-usr:");
 153
 154         if (access("/proc/cgroups", F_OK) < 0)
 155                 e = stpcpy(e, "cgroups-missing:");
 156
 157         if (clock_is_localtime(NULL) > 0)
 158                 e = stpcpy(e, "local-hwclock:");
 159
 160         r = readlink_malloc("/var/run", &destination);
 161         if (r < 0 || !PATH_IN_SET(destination, "../run", "/run"))
 162                 e = stpcpy(e, "var-run-bad:");
 163
 164         /* remove the last ':' */
 165         if (e != buf)
 166                 e[-1] = 0;
 167
 168         return sd_bus_message_append(reply, "s", buf);
 169 }
 170
 171 static int property_get_log_target(
 172                 sd_bus *bus,
 173                 const char *path,
 174                 const char *interface,
 175                 const char *property,
 176                 sd_bus_message *reply,
 177                 void *userdata,
 178                 sd_bus_error *error) {
 179
 180         assert(bus);
 181         assert(reply);
 182
 183         return sd_bus_message_append(reply, "s", log_target_to_string(log_get_target()));
 184 }
 185
 186 static int property_set_log_target(
 187                 sd_bus *bus,
 188                 const char *path,
 189                 const char *interface,
 190                 const char *property,
 191                 sd_bus_message *value,
 192                 void *userdata,
 193                 sd_bus_error *error) {
 194
 195         const char *t;
 196         int r;
 197
 198         assert(bus);
 199         assert(value);
 200
 201         r = sd_bus_message_read(value, "s", &t);
 202         if (r < 0)
 203                 return r;
 204
 205         return log_set_target_from_string(t);
 206 }
 207
 208 static int property_get_log_level(
 209                 sd_bus *bus,
 210                 const char *path,
 211                 const char *interface,
 212                 const char *property,
 213                 sd_bus_message *reply,
 214                 void *userdata,
 215                 sd_bus_error *error) {
 216
 217         _cleanup_free_ char *t = NULL;
 218         int r;
 219
 220         assert(bus);
 221         assert(reply);
 222
 223         r = log_level_to_string_alloc(log_get_max_level(), &t);
 224         if (r < 0)
 225                 return r;
 226
 227         return sd_bus_message_append(reply, "s", t);
 228 }
 229
 230 static int property_set_log_level(
 231                 sd_bus *bus,
 232                 const char *path,
 233                 const char *interface,
 234                 const char *property,
 235                 sd_bus_message *value,
 236                 void *userdata,
 237                 sd_bus_error *error) {
 238
 239         const char *t;
 240         int r;
 241
 242         assert(bus);
 243         assert(value);
 244
 245         r = sd_bus_message_read(value, "s", &t);
 246         if (r < 0)
 247                 return r;
 248
 249         r = log_set_max_level_from_string(t);
 250         if (r == 0)
 251                 log_info("Setting log level to %s.", t);
 252         return r;
 253 }
 254
 255 static int property_get_n_names(
 256                 sd_bus *bus,
 257                 const char *path,
 258                 const char *interface,
 259                 const char *property,
 260                 sd_bus_message *reply,
 261                 void *userdata,
 262                 sd_bus_error *error) {
 263
 264         Manager *m = userdata;
 265
 266         assert(bus);
 267         assert(reply);
 268         assert(m);
 269
 270         return sd_bus_message_append(reply, "u", (uint32_t) hashmap_size(m->units));
 271 }
 272
 273 static int property_get_n_failed_units(
 274                 sd_bus *bus,
 275                 const char *path,
 276                 const char *interface,
 277                 const char *property,
 278                 sd_bus_message *reply,
 279                 void *userdata,
 280                 sd_bus_error *error) {
 281
 282         Manager *m = userdata;
 283
 284         assert(bus);
 285         assert(reply);
 286         assert(m);
 287
 288         return sd_bus_message_append(reply, "u", (uint32_t) set_size(m->failed_units));
 289 }
 290
 291 static int property_get_n_jobs(
 292                 sd_bus *bus,
 293                 const char *path,
 294                 const char *interface,
 295                 const char *property,
 296                 sd_bus_message *reply,
 297                 void *userdata,
 298                 sd_bus_error *error) {
 299
 300         Manager *m = userdata;
 301
 302         assert(bus);
 303         assert(reply);
 304         assert(m);
 305
 306         return sd_bus_message_append(reply, "u", (uint32_t) hashmap_size(m->jobs));
 307 }
 308
 309 static int property_get_progress(
 310                 sd_bus *bus,
 311                 const char *path,
 312                 const char *interface,
 313                 const char *property,
 314                 sd_bus_message *reply,
 315                 void *userdata,
 316                 sd_bus_error *error) {
 317
 318         Manager *m = userdata;
 319         double d;
 320
 321         assert(bus);
 322         assert(reply);
 323         assert(m);
 324
 325         if (dual_timestamp_is_set(&m->finish_timestamp))
 326                 d = 1.0;
 327         else
 328                 d = 1.0 - ((double) hashmap_size(m->jobs) / (double) m->n_installed_jobs);
 329
 330         return sd_bus_message_append(reply, "d", d);
 331 }
 332
 333 static int property_get_system_state(
 334                 sd_bus *bus,
 335                 const char *path,
 336                 const char *interface,
 337                 const char *property,
 338                 sd_bus_message *reply,
 339                 void *userdata,
 340                 sd_bus_error *error) {
 341
 342         Manager *m = userdata;
 343
 344         assert(bus);
 345         assert(reply);
 346         assert(m);
 347
 348         return sd_bus_message_append(reply, "s", manager_state_to_string(manager_state(m)));
 349 }
 350
 351 static int property_set_runtime_watchdog(
 352                 sd_bus *bus,
 353                 const char *path,
 354                 const char *interface,
 355                 const char *property,
 356                 sd_bus_message *value,
 357                 void *userdata,
 358                 sd_bus_error *error) {
 359
 360         usec_t *t = userdata;
 361         int r;
 362
 363         assert(bus);
 364         assert(value);
 365
 366         assert_cc(sizeof(usec_t) == sizeof(uint64_t));
 367
 368         r = sd_bus_message_read(value, "t", t);
 369         if (r < 0)
 370                 return r;
 371
 372         return watchdog_set_timeout(t);
 373 }
 374
 375 static int property_get_timer_slack_nsec(
 376                 sd_bus *bus,
 377                 const char *path,
 378                 const char *interface,
 379                 const char *property,
 380                 sd_bus_message *reply,
 381                 void *userdata,
 382                 sd_bus_error *error) {
 383
 384         assert(bus);
 385         assert(reply);
 386
 387         return sd_bus_message_append(reply, "t", (uint64_t) prctl(PR_GET_TIMERSLACK));
 388 }
 389
 390 static int method_get_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 391         _cleanup_free_ char *path = NULL;
 392         Manager *m = userdata;
 393         const char *name;
 394         Unit *u;
 395         int r;
 396
 397         assert(message);
 398         assert(m);
 399
 400         /* Anyone can call this method */
 401
 402         r = sd_bus_message_read(message, "s", &name);
 403         if (r < 0)
 404                 return r;
 405
 406         if (isempty(name)) {
 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 not member of any unit.");
 421         } else {
 422                 u = manager_get_unit(m, name);
 423                 if (!u)
 424                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s not loaded.", name);
 425         }
 426
 427         r = mac_selinux_unit_access_check(u, message, "status", error);
 428         if (r < 0)
 429                 return r;
 430
 431         path = unit_dbus_path(u);
 432         if (!path)
 433                 return -ENOMEM;
 434
 435         return sd_bus_reply_method_return(message, "o", path);
 436 }
 437
 438 static int method_get_unit_by_pid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 439         _cleanup_free_ char *path = NULL;
 440         Manager *m = userdata;
 441         pid_t pid;
 442         Unit *u;
 443         int r;
 444
 445         assert(message);
 446         assert(m);
 447
 448         assert_cc(sizeof(pid_t) == sizeof(uint32_t));
 449
 450         /* Anyone can call this method */
 451
 452         r = sd_bus_message_read(message, "u", &pid);
 453         if (r < 0)
 454                 return r;
 455         if (pid < 0)
 456                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid PID " PID_FMT, pid);
 457
 458         if (pid == 0) {
 459                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 460
 461                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 462                 if (r < 0)
 463                         return r;
 464
 465                 r = sd_bus_creds_get_pid(creds, &pid);
 466                 if (r < 0)
 467                         return r;
 468         }
 469
 470         u = manager_get_unit_by_pid(m, pid);
 471         if (!u)
 472                 return sd_bus_error_setf(error, BUS_ERROR_NO_UNIT_FOR_PID, "PID "PID_FMT" does not belong to any loaded unit.", pid);
 473
 474         r = mac_selinux_unit_access_check(u, message, "status", error);
 475         if (r < 0)
 476                 return r;
 477
 478         path = unit_dbus_path(u);
 479         if (!path)
 480                 return -ENOMEM;
 481
 482         return sd_bus_reply_method_return(message, "o", path);
 483 }
 484
 485 static int method_get_unit_by_invocation_id(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 486         _cleanup_free_ char *path = NULL;
 487         Manager *m = userdata;
 488         sd_id128_t id;
 489         const void *a;
 490         Unit *u;
 491         size_t sz;
 492         int r;
 493
 494         assert(message);
 495         assert(m);
 496
 497         /* Anyone can call this method */
 498
 499         r = sd_bus_message_read_array(message, 'y', &a, &sz);
 500         if (r < 0)
 501                 return r;
 502         if (sz == 0)
 503                 id = SD_ID128_NULL;
 504         else if (sz == 16)
 505                 memcpy(&id, a, sz);
 506         else
 507                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid invocation ID");
 508
 509         if (sd_id128_is_null(id)) {
 510                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 511                 pid_t pid;
 512
 513                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 514                 if (r < 0)
 515                         return r;
 516
 517                 r = sd_bus_creds_get_pid(creds, &pid);
 518                 if (r < 0)
 519                         return r;
 520
 521                 u = manager_get_unit_by_pid(m, pid);
 522                 if (!u)
 523                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Client " PID_FMT " not member of any unit.", pid);
 524         } else {
 525                 u = hashmap_get(m->units_by_invocation_id, &id);
 526                 if (!u)
 527                         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));
 528         }
 529
 530         r = mac_selinux_unit_access_check(u, message, "status", error);
 531         if (r < 0)
 532                 return r;
 533
 534         /* So here's a special trick: the bus path we return actually references the unit by its invocation ID instead
 535          * of the unit name. This means it stays valid only as long as the invocation ID stays the same. */
 536         path = unit_dbus_path_invocation_id(u);
 537         if (!path)
 538                 return -ENOMEM;
 539
 540         return sd_bus_reply_method_return(message, "o", path);
 541 }
 542
 543 static int method_load_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 544         _cleanup_free_ char *path = NULL;
 545         Manager *m = userdata;
 546         const char *name;
 547         Unit *u;
 548         int r;
 549
 550         assert(message);
 551         assert(m);
 552
 553         /* Anyone can call this method */
 554
 555         r = sd_bus_message_read(message, "s", &name);
 556         if (r < 0)
 557                 return r;
 558
 559         if (isempty(name)) {
 560                 _cleanup_(sd_bus_creds_unrefp) sd_bus_creds *creds = NULL;
 561                 pid_t pid;
 562
 563                 r = sd_bus_query_sender_creds(message, SD_BUS_CREDS_PID, &creds);
 564                 if (r < 0)
 565                         return r;
 566
 567                 r = sd_bus_creds_get_pid(creds, &pid);
 568                 if (r < 0)
 569                         return r;
 570
 571                 u = manager_get_unit_by_pid(m, pid);
 572                 if (!u)
 573                         return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Client not member of any unit.");
 574         } else {
 575                 r = manager_load_unit(m, name, NULL, error, &u);
 576                 if (r < 0)
 577                         return r;
 578         }
 579
 580         r = mac_selinux_unit_access_check(u, message, "status", error);
 581         if (r < 0)
 582                 return r;
 583
 584         path = unit_dbus_path(u);
 585         if (!path)
 586                 return -ENOMEM;
 587
 588         return sd_bus_reply_method_return(message, "o", path);
 589 }
 590
 591 static int method_start_unit_generic(sd_bus_message *message, Manager *m, JobType job_type, bool reload_if_possible, sd_bus_error *error) {
 592         const char *name;
 593         Unit *u;
 594         int r;
 595
 596         assert(message);
 597         assert(m);
 598
 599         r = sd_bus_message_read(message, "s", &name);
 600         if (r < 0)
 601                 return r;
 602
 603         r = manager_load_unit(m, name, NULL, error, &u);
 604         if (r < 0)
 605                 return r;
 606
 607         return bus_unit_method_start_generic(message, u, job_type, reload_if_possible, error);
 608 }
 609
 610 static int method_start_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 611         return method_start_unit_generic(message, userdata, JOB_START, false, error);
 612 }
 613
 614 static int method_stop_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 615         return method_start_unit_generic(message, userdata, JOB_STOP, false, error);
 616 }
 617
 618 static int method_reload_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 619         return method_start_unit_generic(message, userdata, JOB_RELOAD, false, error);
 620 }
 621
 622 static int method_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 623         return method_start_unit_generic(message, userdata, JOB_RESTART, false, error);
 624 }
 625
 626 static int method_try_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 627         return method_start_unit_generic(message, userdata, JOB_TRY_RESTART, false, error);
 628 }
 629
 630 static int method_reload_or_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 631         return method_start_unit_generic(message, userdata, JOB_RESTART, true, error);
 632 }
 633
 634 static int method_reload_or_try_restart_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 635         return method_start_unit_generic(message, userdata, JOB_TRY_RESTART, true, error);
 636 }
 637
 638 static int method_start_unit_replace(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 639         Manager *m = userdata;
 640         const char *old_name;
 641         Unit *u;
 642         int r;
 643
 644         assert(message);
 645         assert(m);
 646
 647         r = sd_bus_message_read(message, "s", &old_name);
 648         if (r < 0)
 649                 return r;
 650
 651         u = manager_get_unit(m, old_name);
 652         if (!u || !u->job || u->job->type != JOB_START)
 653                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "No job queued for unit %s", old_name);
 654
 655         return method_start_unit_generic(message, m, JOB_START, false, error);
 656 }
 657
 658 static int method_kill_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 659         Manager *m = userdata;
 660         const char *name;
 661         Unit *u;
 662         int r;
 663
 664         assert(message);
 665         assert(m);
 666
 667         r = sd_bus_message_read(message, "s", &name);
 668         if (r < 0)
 669                 return r;
 670
 671         u = manager_get_unit(m, name);
 672         if (!u)
 673                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
 674
 675         return bus_unit_method_kill(message, u, error);
 676 }
 677
 678 static int method_reset_failed_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 679         Manager *m = userdata;
 680         const char *name;
 681         Unit *u;
 682         int r;
 683
 684         assert(message);
 685         assert(m);
 686
 687         r = sd_bus_message_read(message, "s", &name);
 688         if (r < 0)
 689                 return r;
 690
 691         u = manager_get_unit(m, name);
 692         if (!u)
 693                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not loaded.", name);
 694
 695         return bus_unit_method_reset_failed(message, u, error);
 696 }
 697
 698 static int method_set_unit_properties(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 699         Manager *m = userdata;
 700         const char *name;
 701         Unit *u;
 702         int r;
 703
 704         assert(message);
 705         assert(m);
 706
 707         r = sd_bus_message_read(message, "s", &name);
 708         if (r < 0)
 709                 return r;
 710
 711         r = manager_load_unit(m, name, NULL, error, &u);
 712         if (r < 0)
 713                 return r;
 714
 715         r = bus_unit_check_load_state(u, error);
 716         if (r < 0)
 717                 return r;
 718
 719         return bus_unit_method_set_properties(message, u, error);
 720 }
 721
 722 static int method_ref_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 723         Manager *m = userdata;
 724         const char *name;
 725         Unit *u;
 726         int r;
 727
 728         assert(message);
 729         assert(m);
 730
 731         r = sd_bus_message_read(message, "s", &name);
 732         if (r < 0)
 733                 return r;
 734
 735         r = manager_load_unit(m, name, NULL, error, &u);
 736         if (r < 0)
 737                 return r;
 738
 739         r = bus_unit_check_load_state(u, error);
 740         if (r < 0)
 741                 return r;
 742
 743         return bus_unit_method_ref(message, u, error);
 744 }
 745
 746 static int method_unref_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 747         Manager *m = userdata;
 748         const char *name;
 749         Unit *u;
 750         int r;
 751
 752         assert(message);
 753         assert(m);
 754
 755         r = sd_bus_message_read(message, "s", &name);
 756         if (r < 0)
 757                 return r;
 758
 759         r = manager_load_unit(m, name, NULL, error, &u);
 760         if (r < 0)
 761                 return r;
 762
 763         r = bus_unit_check_load_state(u, error);
 764         if (r < 0)
 765                 return r;
 766
 767         return bus_unit_method_unref(message, u, error);
 768 }
 769
 770 static int reply_unit_info(sd_bus_message *reply, Unit *u) {
 771         _cleanup_free_ char *unit_path = NULL, *job_path = NULL;
 772         Unit *following;
 773
 774         following = unit_following(u);
 775
 776         unit_path = unit_dbus_path(u);
 777         if (!unit_path)
 778                 return -ENOMEM;
 779
 780         if (u->job) {
 781                 job_path = job_dbus_path(u->job);
 782                 if (!job_path)
 783                         return -ENOMEM;
 784         }
 785
 786         return sd_bus_message_append(
 787                         reply, "(ssssssouso)",
 788                         u->id,
 789                         unit_description(u),
 790                         unit_load_state_to_string(u->load_state),
 791                         unit_active_state_to_string(unit_active_state(u)),
 792                         unit_sub_state_to_string(u),
 793                         following ? following->id : "",
 794                         unit_path,
 795                         u->job ? u->job->id : 0,
 796                         u->job ? job_type_to_string(u->job->type) : "",
 797                         job_path ? job_path : "/");
 798 }
 799
 800 static int method_list_units_by_names(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 801         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
 802         Manager *m = userdata;
 803         int r;
 804         char **unit;
 805         _cleanup_strv_free_ char **units = NULL;
 806
 807         assert(message);
 808         assert(m);
 809
 810         r = sd_bus_message_read_strv(message, &units);
 811         if (r < 0)
 812                 return r;
 813
 814         r = sd_bus_message_new_method_return(message, &reply);
 815         if (r < 0)
 816                 return r;
 817
 818         r = sd_bus_message_open_container(reply, 'a', "(ssssssouso)");
 819         if (r < 0)
 820                 return r;
 821
 822         STRV_FOREACH(unit, units) {
 823                 Unit *u;
 824
 825                 if (!unit_name_is_valid(*unit, UNIT_NAME_ANY))
 826                         continue;
 827
 828                 r = manager_load_unit(m, *unit, NULL, error, &u);
 829                 if (r < 0)
 830                         return r;
 831
 832                 r = reply_unit_info(reply, u);
 833                 if (r < 0)
 834                         return r;
 835         }
 836
 837         r = sd_bus_message_close_container(reply);
 838         if (r < 0)
 839                 return r;
 840
 841         return sd_bus_send(NULL, reply, NULL);
 842 }
 843
 844 static int method_get_unit_processes(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 845         Manager *m = userdata;
 846         const char *name;
 847         Unit *u;
 848         int r;
 849
 850         assert(message);
 851         assert(m);
 852
 853         r = sd_bus_message_read(message, "s", &name);
 854         if (r < 0)
 855                 return r;
 856
 857         u = manager_get_unit(m, name);
 858         if (!u)
 859                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s not loaded.", name);
 860
 861         return bus_unit_method_get_processes(message, u, error);
 862 }
 863
 864 static int transient_unit_from_message(
 865                 Manager *m,
 866                 sd_bus_message *message,
 867                 const char *name,
 868                 Unit **unit,
 869                 sd_bus_error *error) {
 870
 871         UnitType t;
 872         Unit *u;
 873         int r;
 874
 875         assert(m);
 876         assert(message);
 877         assert(name);
 878
 879         t = unit_name_to_type(name);
 880         if (t < 0)
 881                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid unit name or type.");
 882
 883         if (!unit_vtable[t]->can_transient)
 884                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Unit type %s does not support transient units.", unit_type_to_string(t));
 885
 886         r = manager_load_unit(m, name, NULL, error, &u);
 887         if (r < 0)
 888                 return r;
 889
 890         if (!unit_is_pristine(u))
 891                 return sd_bus_error_setf(error, BUS_ERROR_UNIT_EXISTS, "Unit %s already exists.", name);
 892
 893         /* OK, the unit failed to load and is unreferenced, now let's
 894          * fill in the transient data instead */
 895         r = unit_make_transient(u);
 896         if (r < 0)
 897                 return r;
 898
 899         /* Set our properties */
 900         r = bus_unit_set_properties(u, message, UNIT_RUNTIME, false, error);
 901         if (r < 0)
 902                 return r;
 903
 904         /* If the client asked for it, automatically add a reference to this unit. */
 905         if (u->bus_track_add) {
 906                 r = bus_unit_track_add_sender(u, message);
 907                 if (r < 0)
 908                         return log_error_errno(r, "Failed to watch sender: %m");
 909         }
 910
 911         /* Now load the missing bits of the unit we just created */
 912         unit_add_to_load_queue(u);
 913         manager_dispatch_load_queue(m);
 914
 915         *unit = u;
 916
 917         return 0;
 918 }
 919
 920 static int transient_aux_units_from_message(
 921                 Manager *m,
 922                 sd_bus_message *message,
 923                 sd_bus_error *error) {
 924
 925         int r;
 926
 927         assert(m);
 928         assert(message);
 929
 930         r = sd_bus_message_enter_container(message, 'a', "(sa(sv))");
 931         if (r < 0)
 932                 return r;
 933
 934         while ((r = sd_bus_message_enter_container(message, 'r', "sa(sv)")) > 0) {
 935                 const char *name = NULL;
 936                 Unit *u;
 937
 938                 r = sd_bus_message_read(message, "s", &name);
 939                 if (r < 0)
 940                         return r;
 941
 942                 r = transient_unit_from_message(m, message, name, &u, error);
 943                 if (r < 0)
 944                         return r;
 945
 946                 r = sd_bus_message_exit_container(message);
 947                 if (r < 0)
 948                         return r;
 949         }
 950         if (r < 0)
 951                 return r;
 952
 953         r = sd_bus_message_exit_container(message);
 954         if (r < 0)
 955                 return r;
 956
 957         return 0;
 958 }
 959
 960 static int method_start_transient_unit(sd_bus_message *message, void *userdata, sd_bus_error *error) {
 961         const char *name, *smode;
 962         Manager *m = userdata;
 963         JobMode mode;
 964         Unit *u;
 965         int r;
 966
 967         assert(message);
 968         assert(m);
 969
 970         r = mac_selinux_access_check(message, "start", error);
 971         if (r < 0)
 972                 return r;
 973
 974         r = sd_bus_message_read(message, "ss", &name, &smode);
 975         if (r < 0)
 976                 return r;
 977
 978         mode = job_mode_from_string(smode);
 979         if (mode < 0)
 980                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Job mode %s is invalid.", smode);
 981
 982         r = bus_verify_manage_units_async(m, message, error);
 983         if (r < 0)
 984                 return r;
 985         if (r == 0)
 986                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
 987
 988         r = transient_unit_from_message(m, message, name, &u, error);
 989         if (r < 0)
 990                 return r;
 991
 992         r = transient_aux_units_from_message(m, message, error);
 993         if (r < 0)
 994                 return r;
 995
 996         /* Finally, start it */
 997         return bus_unit_queue_job(message, u, JOB_START, mode, false, error);
 998 }
 999
1000 static int method_get_job(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1001         _cleanup_free_ char *path = NULL;
1002         Manager *m = userdata;
1003         uint32_t id;
1004         Job *j;
1005         int r;
1006
1007         assert(message);
1008         assert(m);
1009
1010         /* Anyone can call this method */
1011
1012         r = sd_bus_message_read(message, "u", &id);
1013         if (r < 0)
1014                 return r;
1015
1016         j = manager_get_job(m, id);
1017         if (!j)
1018                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
1019
1020         r = mac_selinux_unit_access_check(j->unit, message, "status", error);
1021         if (r < 0)
1022                 return r;
1023
1024         path = job_dbus_path(j);
1025         if (!path)
1026                 return -ENOMEM;
1027
1028         return sd_bus_reply_method_return(message, "o", path);
1029 }
1030
1031 static int method_cancel_job(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1032         Manager *m = userdata;
1033         uint32_t id;
1034         Job *j;
1035         int r;
1036
1037         assert(message);
1038         assert(m);
1039
1040         r = sd_bus_message_read(message, "u", &id);
1041         if (r < 0)
1042                 return r;
1043
1044         j = manager_get_job(m, id);
1045         if (!j)
1046                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
1047
1048         return bus_job_method_cancel(message, j, error);
1049 }
1050
1051 static int method_clear_jobs(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1052         Manager *m = userdata;
1053         int r;
1054
1055         assert(message);
1056         assert(m);
1057
1058         r = mac_selinux_access_check(message, "reload", error);
1059         if (r < 0)
1060                 return r;
1061
1062         r = bus_verify_manage_units_async(m, message, error);
1063         if (r < 0)
1064                 return r;
1065         if (r == 0)
1066                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1067
1068         manager_clear_jobs(m);
1069
1070         return sd_bus_reply_method_return(message, NULL);
1071 }
1072
1073 static int method_reset_failed(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1074         Manager *m = userdata;
1075         int r;
1076
1077         assert(message);
1078         assert(m);
1079
1080         r = mac_selinux_access_check(message, "reload", error);
1081         if (r < 0)
1082                 return r;
1083
1084         r = bus_verify_manage_units_async(m, message, error);
1085         if (r < 0)
1086                 return r;
1087         if (r == 0)
1088                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1089
1090         manager_reset_failed(m);
1091
1092         return sd_bus_reply_method_return(message, NULL);
1093 }
1094
1095 static int list_units_filtered(sd_bus_message *message, void *userdata, sd_bus_error *error, char **states, char **patterns) {
1096         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1097         Manager *m = userdata;
1098         const char *k;
1099         Iterator i;
1100         Unit *u;
1101         int r;
1102
1103         assert(message);
1104         assert(m);
1105
1106         /* Anyone can call this method */
1107
1108         r = mac_selinux_access_check(message, "status", error);
1109         if (r < 0)
1110                 return r;
1111
1112         r = sd_bus_message_new_method_return(message, &reply);
1113         if (r < 0)
1114                 return r;
1115
1116         r = sd_bus_message_open_container(reply, 'a', "(ssssssouso)");
1117         if (r < 0)
1118                 return r;
1119
1120         HASHMAP_FOREACH_KEY(u, k, m->units, i) {
1121                 if (k != u->id)
1122                         continue;
1123
1124                 if (!strv_isempty(states) &&
1125                     !strv_contains(states, unit_load_state_to_string(u->load_state)) &&
1126                     !strv_contains(states, unit_active_state_to_string(unit_active_state(u))) &&
1127                     !strv_contains(states, unit_sub_state_to_string(u)))
1128                         continue;
1129
1130                 if (!strv_isempty(patterns) &&
1131                     !strv_fnmatch_or_empty(patterns, u->id, FNM_NOESCAPE))
1132                         continue;
1133
1134                 r = reply_unit_info(reply, u);
1135                 if (r < 0)
1136                         return r;
1137         }
1138
1139         r = sd_bus_message_close_container(reply);
1140         if (r < 0)
1141                 return r;
1142
1143         return sd_bus_send(NULL, reply, NULL);
1144 }
1145
1146 static int method_list_units(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1147         return list_units_filtered(message, userdata, error, NULL, NULL);
1148 }
1149
1150 static int method_list_units_filtered(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1151         _cleanup_strv_free_ char **states = NULL;
1152         int r;
1153
1154         r = sd_bus_message_read_strv(message, &states);
1155         if (r < 0)
1156                 return r;
1157
1158         return list_units_filtered(message, userdata, error, states, NULL);
1159 }
1160
1161 static int method_list_units_by_patterns(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1162         _cleanup_strv_free_ char **states = NULL;
1163         _cleanup_strv_free_ char **patterns = NULL;
1164         int r;
1165
1166         r = sd_bus_message_read_strv(message, &states);
1167         if (r < 0)
1168                 return r;
1169
1170         r = sd_bus_message_read_strv(message, &patterns);
1171         if (r < 0)
1172                 return r;
1173
1174         return list_units_filtered(message, userdata, error, states, patterns);
1175 }
1176
1177 static int method_list_jobs(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1178         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1179         Manager *m = userdata;
1180         Iterator i;
1181         Job *j;
1182         int r;
1183
1184         assert(message);
1185         assert(m);
1186
1187         /* Anyone can call this method */
1188
1189         r = mac_selinux_access_check(message, "status", error);
1190         if (r < 0)
1191                 return r;
1192
1193         r = sd_bus_message_new_method_return(message, &reply);
1194         if (r < 0)
1195                 return r;
1196
1197         r = sd_bus_message_open_container(reply, 'a', "(usssoo)");
1198         if (r < 0)
1199                 return r;
1200
1201         HASHMAP_FOREACH(j, m->jobs, i) {
1202                 _cleanup_free_ char *unit_path = NULL, *job_path = NULL;
1203
1204                 job_path = job_dbus_path(j);
1205                 if (!job_path)
1206                         return -ENOMEM;
1207
1208                 unit_path = unit_dbus_path(j->unit);
1209                 if (!unit_path)
1210                         return -ENOMEM;
1211
1212                 r = sd_bus_message_append(
1213                                 reply, "(usssoo)",
1214                                 j->id,
1215                                 j->unit->id,
1216                                 job_type_to_string(j->type),
1217                                 job_state_to_string(j->state),
1218                                 job_path,
1219                                 unit_path);
1220                 if (r < 0)
1221                         return r;
1222         }
1223
1224         r = sd_bus_message_close_container(reply);
1225         if (r < 0)
1226                 return r;
1227
1228         return sd_bus_send(NULL, reply, NULL);
1229 }
1230
1231 static int method_subscribe(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1232         Manager *m = userdata;
1233         int r;
1234
1235         assert(message);
1236         assert(m);
1237
1238         /* Anyone can call this method */
1239
1240         r = mac_selinux_access_check(message, "status", error);
1241         if (r < 0)
1242                 return r;
1243
1244         if (sd_bus_message_get_bus(message) == m->api_bus) {
1245
1246                 /* Note that direct bus connection subscribe by
1247                  * default, we only track peers on the API bus here */
1248
1249                 if (!m->subscribed) {
1250                         r = sd_bus_track_new(sd_bus_message_get_bus(message), &m->subscribed, NULL, NULL);
1251                         if (r < 0)
1252                                 return r;
1253                 }
1254
1255                 r = sd_bus_track_add_sender(m->subscribed, message);
1256                 if (r < 0)
1257                         return r;
1258                 if (r == 0)
1259                         return sd_bus_error_setf(error, BUS_ERROR_ALREADY_SUBSCRIBED, "Client is already subscribed.");
1260         }
1261
1262         return sd_bus_reply_method_return(message, NULL);
1263 }
1264
1265 static int method_unsubscribe(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1266         Manager *m = userdata;
1267         int r;
1268
1269         assert(message);
1270         assert(m);
1271
1272         /* Anyone can call this method */
1273
1274         r = mac_selinux_access_check(message, "status", error);
1275         if (r < 0)
1276                 return r;
1277
1278         if (sd_bus_message_get_bus(message) == m->api_bus) {
1279                 r = sd_bus_track_remove_sender(m->subscribed, message);
1280                 if (r < 0)
1281                         return r;
1282                 if (r == 0)
1283                         return sd_bus_error_setf(error, BUS_ERROR_NOT_SUBSCRIBED, "Client is not subscribed.");
1284         }
1285
1286         return sd_bus_reply_method_return(message, NULL);
1287 }
1288
1289 static int method_dump(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1290         _cleanup_free_ char *dump = NULL;
1291         _cleanup_fclose_ FILE *f = NULL;
1292         Manager *m = userdata;
1293         size_t size;
1294         int r;
1295
1296         assert(message);
1297         assert(m);
1298
1299         /* Anyone can call this method */
1300
1301         r = mac_selinux_access_check(message, "status", error);
1302         if (r < 0)
1303                 return r;
1304
1305         f = open_memstream(&dump, &size);
1306         if (!f)
1307                 return -ENOMEM;
1308
1309         manager_dump_units(m, f, NULL);
1310         manager_dump_jobs(m, f, NULL);
1311
1312         r = fflush_and_check(f);
1313         if (r < 0)
1314                 return r;
1315
1316         return sd_bus_reply_method_return(message, "s", dump);
1317 }
1318
1319 static int method_refuse_snapshot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1320         return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Support for snapshots has been removed.");
1321 }
1322
1323 static int verify_run_space(const char *message, sd_bus_error *error) {
1324         struct statvfs svfs;
1325         uint64_t available;
1326
1327         if (statvfs("/run/systemd", &svfs) < 0)
1328                 return sd_bus_error_set_errnof(error, errno, "Failed to statvfs(/run/systemd): %m");
1329
1330         available = (uint64_t) svfs.f_bfree * (uint64_t) svfs.f_bsize;
1331
1332         if (available < RELOAD_DISK_SPACE_MIN) {
1333                 char fb_available[FORMAT_BYTES_MAX], fb_need[FORMAT_BYTES_MAX];
1334                 return sd_bus_error_setf(error,
1335                                          BUS_ERROR_DISK_FULL,
1336                                          "%s, not enough space available on /run/systemd. "
1337                                          "Currently, %s are free, but a safety buffer of %s is enforced.",
1338                                          message,
1339                                          format_bytes(fb_available, sizeof(fb_available), available),
1340                                          format_bytes(fb_need, sizeof(fb_need), RELOAD_DISK_SPACE_MIN));
1341         }
1342
1343         return 0;
1344 }
1345
1346 int verify_run_space_and_log(const char *message) {
1347         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
1348         int r;
1349
1350         r = verify_run_space(message, &error);
1351         if (r < 0)
1352                 log_error_errno(r, "%s", bus_error_message(&error, r));
1353
1354         return r;
1355 }
1356
1357 static int method_reload(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1358         Manager *m = userdata;
1359         int r;
1360
1361         assert(message);
1362         assert(m);
1363
1364         r = verify_run_space("Refusing to reload", error);
1365         if (r < 0)
1366                 return r;
1367
1368         r = mac_selinux_access_check(message, "reload", error);
1369         if (r < 0)
1370                 return r;
1371
1372         r = bus_verify_reload_daemon_async(m, message, error);
1373         if (r < 0)
1374                 return r;
1375         if (r == 0)
1376                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1377
1378         /* Instead of sending the reply back right away, we just
1379          * remember that we need to and then send it after the reload
1380          * is finished. That way the caller knows when the reload
1381          * finished. */
1382
1383         assert(!m->queued_message);
1384         r = sd_bus_message_new_method_return(message, &m->queued_message);
1385         if (r < 0)
1386                 return r;
1387
1388         m->exit_code = MANAGER_RELOAD;
1389
1390         return 1;
1391 }
1392
1393 static int method_reexecute(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1394         Manager *m = userdata;
1395         int r;
1396
1397         assert(message);
1398         assert(m);
1399
1400         r = verify_run_space("Refusing to reexecute", error);
1401         if (r < 0)
1402                 return r;
1403
1404         r = mac_selinux_access_check(message, "reload", error);
1405         if (r < 0)
1406                 return r;
1407
1408         r = bus_verify_reload_daemon_async(m, message, error);
1409         if (r < 0)
1410                 return r;
1411         if (r == 0)
1412                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1413
1414         /* We don't send a reply back here, the client should
1415          * just wait for us disconnecting. */
1416
1417         m->exit_code = MANAGER_REEXECUTE;
1418         return 1;
1419 }
1420
1421 static int method_exit(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         /* Exit() (in contrast to SetExitCode()) is actually allowed even if
1433          * we are running on the host. It will fall back on reboot() in
1434          * systemd-shutdown if it cannot do the exit() because it isn't a
1435          * container. */
1436
1437         m->exit_code = MANAGER_EXIT;
1438
1439         return sd_bus_reply_method_return(message, NULL);
1440 }
1441
1442 static int method_reboot(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1443         Manager *m = userdata;
1444         int r;
1445
1446         assert(message);
1447         assert(m);
1448
1449         r = mac_selinux_access_check(message, "reboot", error);
1450         if (r < 0)
1451                 return r;
1452
1453         if (!MANAGER_IS_SYSTEM(m))
1454                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Reboot is only supported for system managers.");
1455
1456         m->exit_code = MANAGER_REBOOT;
1457
1458         return sd_bus_reply_method_return(message, NULL);
1459 }
1460
1461 static int method_poweroff(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1462         Manager *m = userdata;
1463         int r;
1464
1465         assert(message);
1466         assert(m);
1467
1468         r = mac_selinux_access_check(message, "halt", error);
1469         if (r < 0)
1470                 return r;
1471
1472         if (!MANAGER_IS_SYSTEM(m))
1473                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Powering off is only supported for system managers.");
1474
1475         m->exit_code = MANAGER_POWEROFF;
1476
1477         return sd_bus_reply_method_return(message, NULL);
1478 }
1479
1480 static int method_halt(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1481         Manager *m = userdata;
1482         int r;
1483
1484         assert(message);
1485         assert(m);
1486
1487         r = mac_selinux_access_check(message, "halt", error);
1488         if (r < 0)
1489                 return r;
1490
1491         if (!MANAGER_IS_SYSTEM(m))
1492                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Halt is only supported for system managers.");
1493
1494         m->exit_code = MANAGER_HALT;
1495
1496         return sd_bus_reply_method_return(message, NULL);
1497 }
1498
1499 static int method_kexec(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1500         Manager *m = userdata;
1501         int r;
1502
1503         assert(message);
1504         assert(m);
1505
1506         r = mac_selinux_access_check(message, "reboot", error);
1507         if (r < 0)
1508                 return r;
1509
1510         if (!MANAGER_IS_SYSTEM(m))
1511                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "KExec is only supported for system managers.");
1512
1513         m->exit_code = MANAGER_KEXEC;
1514
1515         return sd_bus_reply_method_return(message, NULL);
1516 }
1517
1518 static int method_switch_root(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1519         char *ri = NULL, *rt = NULL;
1520         const char *root, *init;
1521         Manager *m = userdata;
1522         struct statvfs svfs;
1523         uint64_t available;
1524         int r;
1525
1526         assert(message);
1527         assert(m);
1528
1529         if (statvfs("/run/systemd", &svfs) < 0)
1530                 return sd_bus_error_set_errnof(error, errno, "Failed to statvfs(/run/systemd): %m");
1531
1532         available = (uint64_t) svfs.f_bfree * (uint64_t) svfs.f_bsize;
1533
1534         if (available < RELOAD_DISK_SPACE_MIN) {
1535                 char fb_available[FORMAT_BYTES_MAX], fb_need[FORMAT_BYTES_MAX];
1536                 log_warning("Dangerously low amount of free space on /run/systemd, root switching operation might not complete successfuly. "
1537                             "Currently, %s are free, but %s are suggested. Proceeding anyway.",
1538                             format_bytes(fb_available, sizeof(fb_available), available),
1539                             format_bytes(fb_need, sizeof(fb_need), RELOAD_DISK_SPACE_MIN));
1540         }
1541
1542         r = mac_selinux_access_check(message, "reboot", error);
1543         if (r < 0)
1544                 return r;
1545
1546         if (!MANAGER_IS_SYSTEM(m))
1547                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Root switching is only supported by system manager.");
1548
1549         r = sd_bus_message_read(message, "ss", &root, &init);
1550         if (r < 0)
1551                 return r;
1552
1553         if (isempty(root))
1554                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "New root directory may not be the empty string.");
1555         if (!path_is_absolute(root))
1556                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "New root path '%s' is not absolute.", root);
1557         if (path_equal(root, "/"))
1558                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "New root directory cannot be the old root directory.");
1559
1560         /* Safety check */
1561         if (isempty(init)) {
1562                 r = path_is_os_tree(root);
1563                 if (r < 0)
1564                         return sd_bus_error_set_errnof(error, r, "Failed to determine whether root path '%s' contains an OS tree: %m", root);
1565                 if (r == 0)
1566                         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);
1567         } else {
1568                 _cleanup_free_ char *chased = NULL;
1569
1570                 if (!path_is_absolute(init))
1571                         return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Path to init binary '%s' not absolute.", init);
1572
1573                 r = chase_symlinks(init, root, CHASE_PREFIX_ROOT, &chased);
1574                 if (r < 0)
1575                         return sd_bus_error_set_errnof(error, r, "Could not resolve init executable %s: %m", init);
1576
1577                 if (laccess(chased, X_OK) < 0) {
1578                         if (errno == EACCES)
1579                                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Init binary %s is not executable.", init);
1580
1581                         return sd_bus_error_set_errnof(error, r, "Could not check whether init binary %s is executable: %m", init);
1582                 }
1583         }
1584
1585         rt = strdup(root);
1586         if (!rt)
1587                 return -ENOMEM;
1588
1589         if (!isempty(init)) {
1590                 ri = strdup(init);
1591                 if (!ri) {
1592                         free(rt);
1593                         return -ENOMEM;
1594                 }
1595         }
1596
1597         free(m->switch_root);
1598         m->switch_root = rt;
1599
1600         free(m->switch_root_init);
1601         m->switch_root_init = ri;
1602
1603         m->exit_code = MANAGER_SWITCH_ROOT;
1604
1605         return sd_bus_reply_method_return(message, NULL);
1606 }
1607
1608 static int method_set_environment(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1609         _cleanup_strv_free_ char **plus = NULL;
1610         Manager *m = userdata;
1611         int r;
1612
1613         assert(message);
1614         assert(m);
1615
1616         r = mac_selinux_access_check(message, "reload", error);
1617         if (r < 0)
1618                 return r;
1619
1620         r = sd_bus_message_read_strv(message, &plus);
1621         if (r < 0)
1622                 return r;
1623         if (!strv_env_is_valid(plus))
1624                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment assignments");
1625
1626         r = bus_verify_set_environment_async(m, message, error);
1627         if (r < 0)
1628                 return r;
1629         if (r == 0)
1630                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1631
1632         r = manager_environment_add(m, NULL, plus);
1633         if (r < 0)
1634                 return r;
1635
1636         return sd_bus_reply_method_return(message, NULL);
1637 }
1638
1639 static int method_unset_environment(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1640         _cleanup_strv_free_ char **minus = NULL;
1641         Manager *m = userdata;
1642         int r;
1643
1644         assert(message);
1645         assert(m);
1646
1647         r = mac_selinux_access_check(message, "reload", error);
1648         if (r < 0)
1649                 return r;
1650
1651         r = sd_bus_message_read_strv(message, &minus);
1652         if (r < 0)
1653                 return r;
1654
1655         if (!strv_env_name_or_assignment_is_valid(minus))
1656                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment variable names or assignments");
1657
1658         r = bus_verify_set_environment_async(m, message, error);
1659         if (r < 0)
1660                 return r;
1661         if (r == 0)
1662                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1663
1664         r = manager_environment_add(m, minus, NULL);
1665         if (r < 0)
1666                 return r;
1667
1668         return sd_bus_reply_method_return(message, NULL);
1669 }
1670
1671 static int method_unset_and_set_environment(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1672         _cleanup_strv_free_ char **minus = NULL, **plus = NULL;
1673         Manager *m = userdata;
1674         int r;
1675
1676         assert(message);
1677         assert(m);
1678
1679         r = mac_selinux_access_check(message, "reload", error);
1680         if (r < 0)
1681                 return r;
1682
1683         r = sd_bus_message_read_strv(message, &minus);
1684         if (r < 0)
1685                 return r;
1686
1687         r = sd_bus_message_read_strv(message, &plus);
1688         if (r < 0)
1689                 return r;
1690
1691         if (!strv_env_name_or_assignment_is_valid(minus))
1692                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment variable names or assignments");
1693         if (!strv_env_is_valid(plus))
1694                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid environment assignments");
1695
1696         r = bus_verify_set_environment_async(m, message, error);
1697         if (r < 0)
1698                 return r;
1699         if (r == 0)
1700                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
1701
1702         r = manager_environment_add(m, minus, plus);
1703         if (r < 0)
1704                 return r;
1705
1706         return sd_bus_reply_method_return(message, NULL);
1707 }
1708
1709 static int method_set_exit_code(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1710         Manager *m = userdata;
1711         uint8_t code;
1712         int r;
1713
1714         assert(message);
1715         assert(m);
1716
1717         r = mac_selinux_access_check(message, "exit", error);
1718         if (r < 0)
1719                 return r;
1720
1721         r = sd_bus_message_read_basic(message, 'y', &code);
1722         if (r < 0)
1723                 return r;
1724
1725         if (MANAGER_IS_SYSTEM(m) && detect_container() <= 0)
1726                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "ExitCode can only be set for user service managers or in containers.");
1727
1728         m->return_value = code;
1729
1730         return sd_bus_reply_method_return(message, NULL);
1731 }
1732
1733 static int method_lookup_dynamic_user_by_name(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1734         Manager *m = userdata;
1735         const char *name;
1736         uid_t uid;
1737         int r;
1738
1739         assert(message);
1740         assert(m);
1741
1742         r = sd_bus_message_read_basic(message, 's', &name);
1743         if (r < 0)
1744                 return r;
1745
1746         if (!MANAGER_IS_SYSTEM(m))
1747                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Dynamic users are only supported in the system instance.");
1748         if (!valid_user_group_name(name))
1749                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "User name invalid: %s", name);
1750
1751         r = dynamic_user_lookup_name(m, name, &uid);
1752         if (r == -ESRCH)
1753                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_DYNAMIC_USER, "Dynamic user %s does not exist.", name);
1754         if (r < 0)
1755                 return r;
1756
1757         return sd_bus_reply_method_return(message, "u", (uint32_t) uid);
1758 }
1759
1760 static int method_lookup_dynamic_user_by_uid(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1761         _cleanup_free_ char *name = NULL;
1762         Manager *m = userdata;
1763         uid_t uid;
1764         int r;
1765
1766         assert(message);
1767         assert(m);
1768
1769         assert_cc(sizeof(uid) == sizeof(uint32_t));
1770         r = sd_bus_message_read_basic(message, 'u', &uid);
1771         if (r < 0)
1772                 return r;
1773
1774         if (!MANAGER_IS_SYSTEM(m))
1775                 return sd_bus_error_setf(error, SD_BUS_ERROR_NOT_SUPPORTED, "Dynamic users are only supported in the system instance.");
1776         if (!uid_is_valid(uid))
1777                 return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "User ID invalid: " UID_FMT, uid);
1778
1779         r = dynamic_user_lookup_uid(m, uid, &name);
1780         if (r == -ESRCH)
1781                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_DYNAMIC_USER, "Dynamic user ID " UID_FMT " does not exist.", uid);
1782         if (r < 0)
1783                 return r;
1784
1785         return sd_bus_reply_method_return(message, "s", name);
1786 }
1787
1788 static int list_unit_files_by_patterns(sd_bus_message *message, void *userdata, sd_bus_error *error, char **states, char **patterns) {
1789         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1790         Manager *m = userdata;
1791         UnitFileList *item;
1792         Hashmap *h;
1793         Iterator i;
1794         int r;
1795
1796         assert(message);
1797         assert(m);
1798
1799         /* Anyone can call this method */
1800
1801         r = mac_selinux_access_check(message, "status", error);
1802         if (r < 0)
1803                 return r;
1804
1805         r = sd_bus_message_new_method_return(message, &reply);
1806         if (r < 0)
1807                 return r;
1808
1809         h = hashmap_new(&string_hash_ops);
1810         if (!h)
1811                 return -ENOMEM;
1812
1813         r = unit_file_get_list(m->unit_file_scope, NULL, h, states, patterns);
1814         if (r < 0)
1815                 goto fail;
1816
1817         r = sd_bus_message_open_container(reply, 'a', "(ss)");
1818         if (r < 0)
1819                 goto fail;
1820
1821         HASHMAP_FOREACH(item, h, i) {
1822
1823                 r = sd_bus_message_append(reply, "(ss)", item->path, unit_file_state_to_string(item->state));
1824                 if (r < 0)
1825                         goto fail;
1826         }
1827
1828         unit_file_list_free(h);
1829
1830         r = sd_bus_message_close_container(reply);
1831         if (r < 0)
1832                 return r;
1833
1834         return sd_bus_send(NULL, reply, NULL);
1835
1836 fail:
1837         unit_file_list_free(h);
1838         return r;
1839 }
1840
1841 static int method_list_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1842         return list_unit_files_by_patterns(message, userdata, error, NULL, NULL);
1843 }
1844
1845 static int method_list_unit_files_by_patterns(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1846         _cleanup_strv_free_ char **states = NULL;
1847         _cleanup_strv_free_ char **patterns = NULL;
1848         int r;
1849
1850         r = sd_bus_message_read_strv(message, &states);
1851         if (r < 0)
1852                 return r;
1853
1854         r = sd_bus_message_read_strv(message, &patterns);
1855         if (r < 0)
1856                 return r;
1857
1858         return list_unit_files_by_patterns(message, userdata, error, states, patterns);
1859 }
1860
1861 static int method_get_unit_file_state(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1862         Manager *m = userdata;
1863         const char *name;
1864         UnitFileState state;
1865         int r;
1866
1867         assert(message);
1868         assert(m);
1869
1870         /* Anyone can call this method */
1871
1872         r = mac_selinux_access_check(message, "status", error);
1873         if (r < 0)
1874                 return r;
1875
1876         r = sd_bus_message_read(message, "s", &name);
1877         if (r < 0)
1878                 return r;
1879
1880         r = unit_file_get_state(m->unit_file_scope, NULL, name, &state);
1881         if (r < 0)
1882                 return r;
1883
1884         return sd_bus_reply_method_return(message, "s", unit_file_state_to_string(state));
1885 }
1886
1887 static int method_get_default_target(sd_bus_message *message, void *userdata, sd_bus_error *error) {
1888         _cleanup_free_ char *default_target = NULL;
1889         Manager *m = userdata;
1890         int r;
1891
1892         assert(message);
1893         assert(m);
1894
1895         /* Anyone can call this method */
1896
1897         r = mac_selinux_access_check(message, "status", error);
1898         if (r < 0)
1899                 return r;
1900
1901         r = unit_file_get_default(m->unit_file_scope, NULL, &default_target);
1902         if (r < 0)
1903                 return r;
1904
1905         return sd_bus_reply_method_return(message, "s", default_target);
1906 }
1907
1908 static int send_unit_files_changed(sd_bus *bus, void *userdata) {
1909         _cleanup_(sd_bus_message_unrefp) sd_bus_message *message = NULL;
1910         int r;
1911
1912         assert(bus);
1913
1914         r = sd_bus_message_new_signal(bus, &message, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "UnitFilesChanged");
1915         if (r < 0)
1916                 return r;
1917
1918         return sd_bus_send(bus, message, NULL);
1919 }
1920
1921 /* Create an error reply, using the error information from changes[]
1922  * if possible, and fall back to generating an error from error code c.
1923  * The error message only describes the first error.
1924  *
1925  * Coordinate with unit_file_dump_changes() in install.c.
1926  */
1927 static int install_error(
1928                 sd_bus_error *error,
1929                 int c,
1930                 UnitFileChange *changes,
1931                 unsigned n_changes) {
1932         int r;
1933         unsigned i;
1934
1935         for (i = 0; i < n_changes; i++)
1936
1937                 switch(changes[i].type) {
1938
1939                 case 0 ... INT_MAX:
1940                         continue;
1941
1942                 case -EEXIST:
1943                         if (changes[i].source)
1944                                 r = sd_bus_error_setf(error, BUS_ERROR_UNIT_EXISTS,
1945                                                       "File %s already exists and is a symlink to %s.",
1946                                                       changes[i].path, changes[i].source);
1947                         else
1948                                 r = sd_bus_error_setf(error, BUS_ERROR_UNIT_EXISTS,
1949                                                       "File %s already exists.",
1950                                                       changes[i].path);
1951                         goto found;
1952
1953                 case -ERFKILL:
1954                         r = sd_bus_error_setf(error, BUS_ERROR_UNIT_MASKED,
1955                                               "Unit file %s is masked.", changes[i].path);
1956                         goto found;
1957
1958                 case -EADDRNOTAVAIL:
1959                         r = sd_bus_error_setf(error, BUS_ERROR_UNIT_GENERATED,
1960                                               "Unit %s is transient or generated.", changes[i].path);
1961                         goto found;
1962
1963                 case -ELOOP:
1964                         r = sd_bus_error_setf(error, BUS_ERROR_UNIT_LINKED,
1965                                               "Refusing to operate on linked unit file %s", changes[i].path);
1966                         goto found;
1967
1968                 case -ENOENT:
1969                         r = sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_UNIT, "Unit file %s does not exist.", changes[i].path);
1970                         goto found;
1971
1972                 default:
1973                         r = sd_bus_error_set_errnof(error, changes[i].type, "File %s: %m", changes[i].path);
1974                         goto found;
1975                 }
1976
1977         r = c < 0 ? c : -EINVAL;
1978
1979  found:
1980         unit_file_changes_free(changes, n_changes);
1981         return r;
1982 }
1983
1984 static int reply_unit_file_changes_and_free(
1985                 Manager *m,
1986                 sd_bus_message *message,
1987                 int carries_install_info,
1988                 UnitFileChange *changes,
1989                 unsigned n_changes,
1990                 sd_bus_error *error) {
1991
1992         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
1993         bool bad = false, good = false;
1994         unsigned i;
1995         int r;
1996
1997         if (unit_file_changes_have_modification(changes, n_changes)) {
1998                 r = bus_foreach_bus(m, NULL, send_unit_files_changed, NULL);
1999                 if (r < 0)
2000                         log_debug_errno(r, "Failed to send UnitFilesChanged signal: %m");
2001         }
2002
2003         r = sd_bus_message_new_method_return(message, &reply);
2004         if (r < 0)
2005                 goto fail;
2006
2007         if (carries_install_info >= 0) {
2008                 r = sd_bus_message_append(reply, "b", carries_install_info);
2009                 if (r < 0)
2010                         goto fail;
2011         }
2012
2013         r = sd_bus_message_open_container(reply, 'a', "(sss)");
2014         if (r < 0)
2015                 goto fail;
2016
2017         for (i = 0; i < n_changes; i++) {
2018
2019                 if (changes[i].type < 0) {
2020                         bad = true;
2021                         continue;
2022                 }
2023
2024                 r = sd_bus_message_append(
2025                                 reply, "(sss)",
2026                                 unit_file_change_type_to_string(changes[i].type),
2027                                 changes[i].path,
2028                                 changes[i].source);
2029                 if (r < 0)
2030                         goto fail;
2031
2032                 good = true;
2033         }
2034
2035         /* If there was a failed change, and no successful change, then return the first failure as proper method call
2036          * error. */
2037         if (bad && !good)
2038                 return install_error(error, 0, changes, n_changes);
2039
2040         r = sd_bus_message_close_container(reply);
2041         if (r < 0)
2042                 goto fail;
2043
2044         unit_file_changes_free(changes, n_changes);
2045         return sd_bus_send(NULL, reply, NULL);
2046
2047 fail:
2048         unit_file_changes_free(changes, n_changes);
2049         return r;
2050 }
2051
2052 static int method_enable_unit_files_generic(
2053                 sd_bus_message *message,
2054                 Manager *m,
2055                 int (*call)(UnitFileScope scope, UnitFileFlags flags, const char *root_dir, char *files[], UnitFileChange **changes, unsigned *n_changes),
2056                 bool carries_install_info,
2057                 sd_bus_error *error) {
2058
2059         _cleanup_strv_free_ char **l = NULL;
2060         UnitFileChange *changes = NULL;
2061         unsigned n_changes = 0;
2062         UnitFileFlags flags;
2063         int runtime, force, r;
2064
2065         assert(message);
2066         assert(m);
2067
2068         r = sd_bus_message_read_strv(message, &l);
2069         if (r < 0)
2070                 return r;
2071
2072         r = sd_bus_message_read(message, "bb", &runtime, &force);
2073         if (r < 0)
2074                 return r;
2075
2076         flags = unit_file_bools_to_flags(runtime, force);
2077
2078         r = bus_verify_manage_unit_files_async(m, message, error);
2079         if (r < 0)
2080                 return r;
2081         if (r == 0)
2082                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2083
2084         r = call(m->unit_file_scope, flags, NULL, l, &changes, &n_changes);
2085         if (r < 0)
2086                 return install_error(error, r, changes, n_changes);
2087
2088         return reply_unit_file_changes_and_free(m, message, carries_install_info ? r : -1, changes, n_changes, error);
2089 }
2090
2091 static int method_enable_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2092         return method_enable_unit_files_generic(message, userdata, unit_file_enable, true, error);
2093 }
2094
2095 static int method_reenable_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2096         return method_enable_unit_files_generic(message, userdata, unit_file_reenable, true, error);
2097 }
2098
2099 static int method_link_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2100         return method_enable_unit_files_generic(message, userdata, unit_file_link, false, error);
2101 }
2102
2103 static int unit_file_preset_without_mode(UnitFileScope scope, UnitFileFlags flags, const char *root_dir, char **files, UnitFileChange **changes, unsigned *n_changes) {
2104         return unit_file_preset(scope, flags, root_dir, files, UNIT_FILE_PRESET_FULL, changes, n_changes);
2105 }
2106
2107 static int method_preset_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2108         return method_enable_unit_files_generic(message, userdata, unit_file_preset_without_mode, true, error);
2109 }
2110
2111 static int method_mask_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2112         return method_enable_unit_files_generic(message, userdata, unit_file_mask, false, error);
2113 }
2114
2115 static int method_preset_unit_files_with_mode(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2116
2117         _cleanup_strv_free_ char **l = NULL;
2118         UnitFileChange *changes = NULL;
2119         unsigned n_changes = 0;
2120         Manager *m = userdata;
2121         UnitFilePresetMode mm;
2122         int runtime, force, r;
2123         UnitFileFlags flags;
2124         const char *mode;
2125
2126         assert(message);
2127         assert(m);
2128
2129         r = sd_bus_message_read_strv(message, &l);
2130         if (r < 0)
2131                 return r;
2132
2133         r = sd_bus_message_read(message, "sbb", &mode, &runtime, &force);
2134         if (r < 0)
2135                 return r;
2136
2137         flags = unit_file_bools_to_flags(runtime, force);
2138
2139         if (isempty(mode))
2140                 mm = UNIT_FILE_PRESET_FULL;
2141         else {
2142                 mm = unit_file_preset_mode_from_string(mode);
2143                 if (mm < 0)
2144                         return -EINVAL;
2145         }
2146
2147         r = bus_verify_manage_unit_files_async(m, message, error);
2148         if (r < 0)
2149                 return r;
2150         if (r == 0)
2151                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2152
2153         r = unit_file_preset(m->unit_file_scope, flags, NULL, l, mm, &changes, &n_changes);
2154         if (r < 0)
2155                 return install_error(error, r, changes, n_changes);
2156
2157         return reply_unit_file_changes_and_free(m, message, r, changes, n_changes, error);
2158 }
2159
2160 static int method_disable_unit_files_generic(
2161                 sd_bus_message *message,
2162                 Manager *m,
2163                 int (*call)(UnitFileScope scope, UnitFileFlags flags, const char *root_dir, char *files[], UnitFileChange **changes, unsigned *n_changes),
2164                 sd_bus_error *error) {
2165
2166         _cleanup_strv_free_ char **l = NULL;
2167         UnitFileChange *changes = NULL;
2168         unsigned n_changes = 0;
2169         int r, runtime;
2170
2171         assert(message);
2172         assert(m);
2173
2174         r = sd_bus_message_read_strv(message, &l);
2175         if (r < 0)
2176                 return r;
2177
2178         r = sd_bus_message_read(message, "b", &runtime);
2179         if (r < 0)
2180                 return r;
2181
2182         r = bus_verify_manage_unit_files_async(m, message, error);
2183         if (r < 0)
2184                 return r;
2185         if (r == 0)
2186                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2187
2188         r = call(m->unit_file_scope, runtime ? UNIT_FILE_RUNTIME : 0, NULL, l, &changes, &n_changes);
2189         if (r < 0)
2190                 return install_error(error, r, changes, n_changes);
2191
2192         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2193 }
2194
2195 static int method_disable_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2196         return method_disable_unit_files_generic(message, userdata, unit_file_disable, error);
2197 }
2198
2199 static int method_unmask_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2200         return method_disable_unit_files_generic(message, userdata, unit_file_unmask, error);
2201 }
2202
2203 static int method_revert_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2204         _cleanup_strv_free_ char **l = NULL;
2205         UnitFileChange *changes = NULL;
2206         unsigned n_changes = 0;
2207         Manager *m = userdata;
2208         int r;
2209
2210         assert(message);
2211         assert(m);
2212
2213         r = sd_bus_message_read_strv(message, &l);
2214         if (r < 0)
2215                 return r;
2216
2217         r = bus_verify_manage_unit_files_async(m, message, error);
2218         if (r < 0)
2219                 return r;
2220         if (r == 0)
2221                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2222
2223         r = unit_file_revert(m->unit_file_scope, NULL, l, &changes, &n_changes);
2224         if (r < 0)
2225                 return install_error(error, r, changes, n_changes);
2226
2227         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2228 }
2229
2230 static int method_set_default_target(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2231         UnitFileChange *changes = NULL;
2232         unsigned n_changes = 0;
2233         Manager *m = userdata;
2234         const char *name;
2235         int force, r;
2236
2237         assert(message);
2238         assert(m);
2239
2240         r = mac_selinux_access_check(message, "enable", error);
2241         if (r < 0)
2242                 return r;
2243
2244         r = sd_bus_message_read(message, "sb", &name, &force);
2245         if (r < 0)
2246                 return r;
2247
2248         r = bus_verify_manage_unit_files_async(m, message, error);
2249         if (r < 0)
2250                 return r;
2251         if (r == 0)
2252                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2253
2254         r = unit_file_set_default(m->unit_file_scope, force ? UNIT_FILE_FORCE : 0, NULL, name, &changes, &n_changes);
2255         if (r < 0)
2256                 return install_error(error, r, changes, n_changes);
2257
2258         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2259 }
2260
2261 static int method_preset_all_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2262         UnitFileChange *changes = NULL;
2263         unsigned n_changes = 0;
2264         Manager *m = userdata;
2265         UnitFilePresetMode mm;
2266         const char *mode;
2267         UnitFileFlags flags;
2268         int force, runtime, r;
2269
2270         assert(message);
2271         assert(m);
2272
2273         r = mac_selinux_access_check(message, "enable", error);
2274         if (r < 0)
2275                 return r;
2276
2277         r = sd_bus_message_read(message, "sbb", &mode, &runtime, &force);
2278         if (r < 0)
2279                 return r;
2280
2281         flags = unit_file_bools_to_flags(runtime, force);
2282
2283         if (isempty(mode))
2284                 mm = UNIT_FILE_PRESET_FULL;
2285         else {
2286                 mm = unit_file_preset_mode_from_string(mode);
2287                 if (mm < 0)
2288                         return -EINVAL;
2289         }
2290
2291         r = bus_verify_manage_unit_files_async(m, message, error);
2292         if (r < 0)
2293                 return r;
2294         if (r == 0)
2295                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2296
2297         r = unit_file_preset_all(m->unit_file_scope, flags, NULL, mm, &changes, &n_changes);
2298         if (r < 0)
2299                 return install_error(error, r, changes, n_changes);
2300
2301         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2302 }
2303
2304 static int method_add_dependency_unit_files(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2305         _cleanup_strv_free_ char **l = NULL;
2306         Manager *m = userdata;
2307         UnitFileChange *changes = NULL;
2308         unsigned n_changes = 0;
2309         int runtime, force, r;
2310         char *target, *type;
2311         UnitDependency dep;
2312         UnitFileFlags flags;
2313
2314         assert(message);
2315         assert(m);
2316
2317         r = bus_verify_manage_unit_files_async(m, message, error);
2318         if (r < 0)
2319                 return r;
2320         if (r == 0)
2321                 return 1; /* No authorization for now, but the async polkit stuff will call us again when it has it */
2322
2323         r = sd_bus_message_read_strv(message, &l);
2324         if (r < 0)
2325                 return r;
2326
2327         r = sd_bus_message_read(message, "ssbb", &target, &type, &runtime, &force);
2328         if (r < 0)
2329                 return r;
2330
2331         flags = unit_file_bools_to_flags(runtime, force);
2332
2333         dep = unit_dependency_from_string(type);
2334         if (dep < 0)
2335                 return -EINVAL;
2336
2337         r = unit_file_add_dependency(m->unit_file_scope, flags, NULL, l, target, dep, &changes, &n_changes);
2338         if (r < 0)
2339                 return install_error(error, r, changes, n_changes);
2340
2341         return reply_unit_file_changes_and_free(m, message, -1, changes, n_changes, error);
2342 }
2343
2344 static int method_get_unit_file_links(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2345         _cleanup_(sd_bus_message_unrefp) sd_bus_message *reply = NULL;
2346         UnitFileChange *changes = NULL;
2347         unsigned n_changes = 0, i;
2348         UnitFileFlags flags;
2349         const char *name;
2350         char **p;
2351         int runtime, r;
2352
2353         r = sd_bus_message_read(message, "sb", &name, &runtime);
2354         if (r < 0)
2355                 return r;
2356
2357         r = sd_bus_message_new_method_return(message, &reply);
2358         if (r < 0)
2359                 return r;
2360
2361         r = sd_bus_message_open_container(reply, SD_BUS_TYPE_ARRAY, "s");
2362         if (r < 0)
2363                 return r;
2364
2365         p = STRV_MAKE(name);
2366         flags = UNIT_FILE_DRY_RUN |
2367                 (runtime ? UNIT_FILE_RUNTIME : 0);
2368
2369         r = unit_file_disable(UNIT_FILE_SYSTEM, flags, NULL, p, &changes, &n_changes);
2370         if (r < 0)
2371                 return log_error_errno(r, "Failed to get file links for %s: %m", name);
2372
2373         for (i = 0; i < n_changes; i++)
2374                 if (changes[i].type == UNIT_FILE_UNLINK) {
2375                         r = sd_bus_message_append(reply, "s", changes[i].path);
2376                         if (r < 0)
2377                                 return r;
2378                 }
2379
2380         r = sd_bus_message_close_container(reply);
2381         if (r < 0)
2382                 return r;
2383
2384         return sd_bus_send(NULL, reply, NULL);
2385 }
2386
2387 static int method_get_job_waiting(sd_bus_message *message, void *userdata, sd_bus_error *error) {
2388         Manager *m = userdata;
2389         uint32_t id;
2390         Job *j;
2391         int r;
2392
2393         assert(message);
2394         assert(m);
2395
2396         r = sd_bus_message_read(message, "u", &id);
2397         if (r < 0)
2398                 return r;
2399
2400         j = manager_get_job(m, id);
2401         if (!j)
2402                 return sd_bus_error_setf(error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
2403
2404         return bus_job_method_get_waiting_jobs(message, j, error);
2405 }
2406
2407 const sd_bus_vtable bus_manager_vtable[] = {
2408         SD_BUS_VTABLE_START(0),
2409
2410         SD_BUS_PROPERTY("Version", "s", property_get_version, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2411         SD_BUS_PROPERTY("Features", "s", property_get_features, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2412         SD_BUS_PROPERTY("Virtualization", "s", property_get_virtualization, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2413         SD_BUS_PROPERTY("Architecture", "s", property_get_architecture, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2414         SD_BUS_PROPERTY("Tainted", "s", property_get_tainted, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2415         BUS_PROPERTY_DUAL_TIMESTAMP("FirmwareTimestamp", offsetof(Manager, firmware_timestamp), SD_BUS_VTABLE_PROPERTY_CONST),
2416         BUS_PROPERTY_DUAL_TIMESTAMP("LoaderTimestamp", offsetof(Manager, loader_timestamp), SD_BUS_VTABLE_PROPERTY_CONST),
2417         BUS_PROPERTY_DUAL_TIMESTAMP("KernelTimestamp", offsetof(Manager, kernel_timestamp), SD_BUS_VTABLE_PROPERTY_CONST),
2418         BUS_PROPERTY_DUAL_TIMESTAMP("InitRDTimestamp", offsetof(Manager, initrd_timestamp), SD_BUS_VTABLE_PROPERTY_CONST),
2419         BUS_PROPERTY_DUAL_TIMESTAMP("UserspaceTimestamp", offsetof(Manager, userspace_timestamp), SD_BUS_VTABLE_PROPERTY_CONST),
2420         BUS_PROPERTY_DUAL_TIMESTAMP("FinishTimestamp", offsetof(Manager, finish_timestamp), SD_BUS_VTABLE_PROPERTY_CONST),
2421         BUS_PROPERTY_DUAL_TIMESTAMP("SecurityStartTimestamp", offsetof(Manager, security_start_timestamp), SD_BUS_VTABLE_PROPERTY_CONST),
2422         BUS_PROPERTY_DUAL_TIMESTAMP("SecurityFinishTimestamp", offsetof(Manager, security_finish_timestamp), SD_BUS_VTABLE_PROPERTY_CONST),
2423         BUS_PROPERTY_DUAL_TIMESTAMP("GeneratorsStartTimestamp", offsetof(Manager, generators_start_timestamp), SD_BUS_VTABLE_PROPERTY_CONST),
2424         BUS_PROPERTY_DUAL_TIMESTAMP("GeneratorsFinishTimestamp", offsetof(Manager, generators_finish_timestamp), SD_BUS_VTABLE_PROPERTY_CONST),
2425         BUS_PROPERTY_DUAL_TIMESTAMP("UnitsLoadStartTimestamp", offsetof(Manager, units_load_start_timestamp), SD_BUS_VTABLE_PROPERTY_CONST),
2426         BUS_PROPERTY_DUAL_TIMESTAMP("UnitsLoadFinishTimestamp", offsetof(Manager, units_load_finish_timestamp), SD_BUS_VTABLE_PROPERTY_CONST),
2427         SD_BUS_WRITABLE_PROPERTY("LogLevel", "s", property_get_log_level, property_set_log_level, 0, 0),
2428         SD_BUS_WRITABLE_PROPERTY("LogTarget", "s", property_get_log_target, property_set_log_target, 0, 0),
2429         SD_BUS_PROPERTY("NNames", "u", property_get_n_names, 0, 0),
2430         SD_BUS_PROPERTY("NFailedUnits", "u", property_get_n_failed_units, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
2431         SD_BUS_PROPERTY("NJobs", "u", property_get_n_jobs, 0, 0),
2432         SD_BUS_PROPERTY("NInstalledJobs", "u", bus_property_get_unsigned, offsetof(Manager, n_installed_jobs), 0),
2433         SD_BUS_PROPERTY("NFailedJobs", "u", bus_property_get_unsigned, offsetof(Manager, n_failed_jobs), 0),
2434         SD_BUS_PROPERTY("Progress", "d", property_get_progress, 0, 0),
2435         SD_BUS_PROPERTY("Environment", "as", NULL, offsetof(Manager, environment), 0),
2436         SD_BUS_PROPERTY("ConfirmSpawn", "b", bus_property_get_bool, offsetof(Manager, confirm_spawn), SD_BUS_VTABLE_PROPERTY_CONST),
2437         SD_BUS_PROPERTY("ShowStatus", "b", bus_property_get_bool, offsetof(Manager, show_status), SD_BUS_VTABLE_PROPERTY_CONST),
2438         SD_BUS_PROPERTY("UnitPath", "as", NULL, offsetof(Manager, lookup_paths.search_path), SD_BUS_VTABLE_PROPERTY_CONST),
2439         SD_BUS_PROPERTY("DefaultStandardOutput", "s", bus_property_get_exec_output, offsetof(Manager, default_std_output), SD_BUS_VTABLE_PROPERTY_CONST),
2440         SD_BUS_PROPERTY("DefaultStandardError", "s", bus_property_get_exec_output, offsetof(Manager, default_std_output), SD_BUS_VTABLE_PROPERTY_CONST),
2441         SD_BUS_WRITABLE_PROPERTY("RuntimeWatchdogUSec", "t", bus_property_get_usec, property_set_runtime_watchdog, offsetof(Manager, runtime_watchdog), 0),
2442         SD_BUS_WRITABLE_PROPERTY("ShutdownWatchdogUSec", "t", bus_property_get_usec, bus_property_set_usec, offsetof(Manager, shutdown_watchdog), 0),
2443         SD_BUS_PROPERTY("ControlGroup", "s", NULL, offsetof(Manager, cgroup_root), 0),
2444         SD_BUS_PROPERTY("SystemState", "s", property_get_system_state, 0, 0),
2445         SD_BUS_PROPERTY("ExitCode", "y", bus_property_get_unsigned, offsetof(Manager, return_value), 0),
2446         SD_BUS_PROPERTY("DefaultTimerAccuracyUSec", "t", bus_property_get_usec, offsetof(Manager, default_timer_accuracy_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2447         SD_BUS_PROPERTY("DefaultTimeoutStartUSec", "t", bus_property_get_usec, offsetof(Manager, default_timeout_start_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2448         SD_BUS_PROPERTY("DefaultTimeoutStopUSec", "t", bus_property_get_usec, offsetof(Manager, default_timeout_stop_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2449         SD_BUS_PROPERTY("DefaultRestartUSec", "t", bus_property_get_usec, offsetof(Manager, default_restart_usec), SD_BUS_VTABLE_PROPERTY_CONST),
2450         SD_BUS_PROPERTY("DefaultStartLimitIntervalSec", "t", bus_property_get_usec, offsetof(Manager, default_start_limit_interval), SD_BUS_VTABLE_PROPERTY_CONST),
2451         SD_BUS_PROPERTY("DefaultStartLimitInterval", "t", bus_property_get_usec, offsetof(Manager, default_start_limit_interval), SD_BUS_VTABLE_PROPERTY_CONST|SD_BUS_VTABLE_HIDDEN), /* obsolete alias name */
2452         SD_BUS_PROPERTY("DefaultStartLimitBurst", "u", bus_property_get_unsigned, offsetof(Manager, default_start_limit_burst), SD_BUS_VTABLE_PROPERTY_CONST),
2453         SD_BUS_PROPERTY("DefaultCPUAccounting", "b", bus_property_get_bool, offsetof(Manager, default_cpu_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
2454         SD_BUS_PROPERTY("DefaultBlockIOAccounting", "b", bus_property_get_bool, offsetof(Manager, default_blockio_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
2455         SD_BUS_PROPERTY("DefaultMemoryAccounting", "b", bus_property_get_bool, offsetof(Manager, default_memory_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
2456         SD_BUS_PROPERTY("DefaultTasksAccounting", "b", bus_property_get_bool, offsetof(Manager, default_tasks_accounting), SD_BUS_VTABLE_PROPERTY_CONST),
2457         SD_BUS_PROPERTY("DefaultLimitCPU", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CPU]), SD_BUS_VTABLE_PROPERTY_CONST),
2458         SD_BUS_PROPERTY("DefaultLimitCPUSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CPU]), SD_BUS_VTABLE_PROPERTY_CONST),
2459         SD_BUS_PROPERTY("DefaultLimitFSIZE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_FSIZE]), SD_BUS_VTABLE_PROPERTY_CONST),
2460         SD_BUS_PROPERTY("DefaultLimitFSIZESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_FSIZE]), SD_BUS_VTABLE_PROPERTY_CONST),
2461         SD_BUS_PROPERTY("DefaultLimitDATA", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_DATA]), SD_BUS_VTABLE_PROPERTY_CONST),
2462         SD_BUS_PROPERTY("DefaultLimitDATASoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_DATA]), SD_BUS_VTABLE_PROPERTY_CONST),
2463         SD_BUS_PROPERTY("DefaultLimitSTACK", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_STACK]), SD_BUS_VTABLE_PROPERTY_CONST),
2464         SD_BUS_PROPERTY("DefaultLimitSTACKSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_STACK]), SD_BUS_VTABLE_PROPERTY_CONST),
2465         SD_BUS_PROPERTY("DefaultLimitCORE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CORE]), SD_BUS_VTABLE_PROPERTY_CONST),
2466         SD_BUS_PROPERTY("DefaultLimitCORESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_CORE]), SD_BUS_VTABLE_PROPERTY_CONST),
2467         SD_BUS_PROPERTY("DefaultLimitRSS", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RSS]), SD_BUS_VTABLE_PROPERTY_CONST),
2468         SD_BUS_PROPERTY("DefaultLimitRSSSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RSS]), SD_BUS_VTABLE_PROPERTY_CONST),
2469         SD_BUS_PROPERTY("DefaultLimitNOFILE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NOFILE]), SD_BUS_VTABLE_PROPERTY_CONST),
2470         SD_BUS_PROPERTY("DefaultLimitNOFILESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NOFILE]), SD_BUS_VTABLE_PROPERTY_CONST),
2471         SD_BUS_PROPERTY("DefaultLimitAS", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_AS]), SD_BUS_VTABLE_PROPERTY_CONST),
2472         SD_BUS_PROPERTY("DefaultLimitASSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_AS]), SD_BUS_VTABLE_PROPERTY_CONST),
2473         SD_BUS_PROPERTY("DefaultLimitNPROC", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NPROC]), SD_BUS_VTABLE_PROPERTY_CONST),
2474         SD_BUS_PROPERTY("DefaultLimitNPROCSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NPROC]), SD_BUS_VTABLE_PROPERTY_CONST),
2475         SD_BUS_PROPERTY("DefaultLimitMEMLOCK", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MEMLOCK]), SD_BUS_VTABLE_PROPERTY_CONST),
2476         SD_BUS_PROPERTY("DefaultLimitMEMLOCKSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MEMLOCK]), SD_BUS_VTABLE_PROPERTY_CONST),
2477         SD_BUS_PROPERTY("DefaultLimitLOCKS", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_LOCKS]), SD_BUS_VTABLE_PROPERTY_CONST),
2478         SD_BUS_PROPERTY("DefaultLimitLOCKSSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_LOCKS]), SD_BUS_VTABLE_PROPERTY_CONST),
2479         SD_BUS_PROPERTY("DefaultLimitSIGPENDING", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_SIGPENDING]), SD_BUS_VTABLE_PROPERTY_CONST),
2480         SD_BUS_PROPERTY("DefaultLimitSIGPENDINGSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_SIGPENDING]), SD_BUS_VTABLE_PROPERTY_CONST),
2481         SD_BUS_PROPERTY("DefaultLimitMSGQUEUE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MSGQUEUE]), SD_BUS_VTABLE_PROPERTY_CONST),
2482         SD_BUS_PROPERTY("DefaultLimitMSGQUEUESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_MSGQUEUE]), SD_BUS_VTABLE_PROPERTY_CONST),
2483         SD_BUS_PROPERTY("DefaultLimitNICE", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NICE]), SD_BUS_VTABLE_PROPERTY_CONST),
2484         SD_BUS_PROPERTY("DefaultLimitNICESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_NICE]), SD_BUS_VTABLE_PROPERTY_CONST),
2485         SD_BUS_PROPERTY("DefaultLimitRTPRIO", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTPRIO]), SD_BUS_VTABLE_PROPERTY_CONST),
2486         SD_BUS_PROPERTY("DefaultLimitRTPRIOSoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTPRIO]), SD_BUS_VTABLE_PROPERTY_CONST),
2487         SD_BUS_PROPERTY("DefaultLimitRTTIME", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTTIME]), SD_BUS_VTABLE_PROPERTY_CONST),
2488         SD_BUS_PROPERTY("DefaultLimitRTTIMESoft", "t", bus_property_get_rlimit, offsetof(Manager, rlimit[RLIMIT_RTTIME]), SD_BUS_VTABLE_PROPERTY_CONST),
2489         SD_BUS_PROPERTY("DefaultTasksMax", "t", NULL, offsetof(Manager, default_tasks_max), SD_BUS_VTABLE_PROPERTY_CONST),
2490         SD_BUS_PROPERTY("TimerSlackNSec", "t", property_get_timer_slack_nsec, 0, SD_BUS_VTABLE_PROPERTY_CONST),
2491
2492         SD_BUS_METHOD("GetUnit", "s", "o", method_get_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2493         SD_BUS_METHOD("GetUnitByPID", "u", "o", method_get_unit_by_pid, SD_BUS_VTABLE_UNPRIVILEGED),
2494         SD_BUS_METHOD("GetUnitByInvocationID", "ay", "o", method_get_unit_by_invocation_id, SD_BUS_VTABLE_UNPRIVILEGED),
2495         SD_BUS_METHOD("LoadUnit", "s", "o", method_load_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2496         SD_BUS_METHOD("StartUnit", "ss", "o", method_start_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2497         SD_BUS_METHOD("StartUnitReplace", "sss", "o", method_start_unit_replace, SD_BUS_VTABLE_UNPRIVILEGED),
2498         SD_BUS_METHOD("StopUnit", "ss", "o", method_stop_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2499         SD_BUS_METHOD("ReloadUnit", "ss", "o", method_reload_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2500         SD_BUS_METHOD("RestartUnit", "ss", "o", method_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2501         SD_BUS_METHOD("TryRestartUnit", "ss", "o", method_try_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2502         SD_BUS_METHOD("ReloadOrRestartUnit", "ss", "o", method_reload_or_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2503         SD_BUS_METHOD("ReloadOrTryRestartUnit", "ss", "o", method_reload_or_try_restart_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2504         SD_BUS_METHOD("KillUnit", "ssi", NULL, method_kill_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2505         SD_BUS_METHOD("ResetFailedUnit", "s", NULL, method_reset_failed_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2506         SD_BUS_METHOD("SetUnitProperties", "sba(sv)", NULL, method_set_unit_properties, SD_BUS_VTABLE_UNPRIVILEGED),
2507         SD_BUS_METHOD("RefUnit", "s", NULL, method_ref_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2508         SD_BUS_METHOD("UnrefUnit", "s", NULL, method_unref_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2509         SD_BUS_METHOD("StartTransientUnit", "ssa(sv)a(sa(sv))", "o", method_start_transient_unit, SD_BUS_VTABLE_UNPRIVILEGED),
2510         SD_BUS_METHOD("GetUnitProcesses", "s", "a(sus)", method_get_unit_processes, SD_BUS_VTABLE_UNPRIVILEGED),
2511         SD_BUS_METHOD("GetJob", "u", "o", method_get_job, SD_BUS_VTABLE_UNPRIVILEGED),
2512         SD_BUS_METHOD("GetJobAfter", "u", "a(usssoo)", method_get_job_waiting, SD_BUS_VTABLE_UNPRIVILEGED),
2513         SD_BUS_METHOD("GetJobBefore", "u", "a(usssoo)", method_get_job_waiting, SD_BUS_VTABLE_UNPRIVILEGED),
2514         SD_BUS_METHOD("CancelJob", "u", NULL, method_cancel_job, SD_BUS_VTABLE_UNPRIVILEGED),
2515         SD_BUS_METHOD("ClearJobs", NULL, NULL, method_clear_jobs, SD_BUS_VTABLE_UNPRIVILEGED),
2516         SD_BUS_METHOD("ResetFailed", NULL, NULL, method_reset_failed, SD_BUS_VTABLE_UNPRIVILEGED),
2517         SD_BUS_METHOD("ListUnits", NULL, "a(ssssssouso)", method_list_units, SD_BUS_VTABLE_UNPRIVILEGED),
2518         SD_BUS_METHOD("ListUnitsFiltered", "as", "a(ssssssouso)", method_list_units_filtered, SD_BUS_VTABLE_UNPRIVILEGED),
2519         SD_BUS_METHOD("ListUnitsByPatterns", "asas", "a(ssssssouso)", method_list_units_by_patterns, SD_BUS_VTABLE_UNPRIVILEGED),
2520         SD_BUS_METHOD("ListUnitsByNames", "as", "a(ssssssouso)", method_list_units_by_names, SD_BUS_VTABLE_UNPRIVILEGED),
2521         SD_BUS_METHOD("ListJobs", NULL, "a(usssoo)", method_list_jobs, SD_BUS_VTABLE_UNPRIVILEGED),
2522         SD_BUS_METHOD("Subscribe", NULL, NULL, method_subscribe, SD_BUS_VTABLE_UNPRIVILEGED),
2523         SD_BUS_METHOD("Unsubscribe", NULL, NULL, method_unsubscribe, SD_BUS_VTABLE_UNPRIVILEGED),
2524         SD_BUS_METHOD("Dump", NULL, "s", method_dump, SD_BUS_VTABLE_UNPRIVILEGED),
2525         SD_BUS_METHOD("CreateSnapshot", "sb", "o", method_refuse_snapshot, SD_BUS_VTABLE_UNPRIVILEGED),
2526         SD_BUS_METHOD("RemoveSnapshot", "s", NULL, method_refuse_snapshot, SD_BUS_VTABLE_UNPRIVILEGED),
2527         SD_BUS_METHOD("Reload", NULL, NULL, method_reload, SD_BUS_VTABLE_UNPRIVILEGED),
2528         SD_BUS_METHOD("Reexecute", NULL, NULL, method_reexecute, SD_BUS_VTABLE_UNPRIVILEGED),
2529         SD_BUS_METHOD("Exit", NULL, NULL, method_exit, 0),
2530         SD_BUS_METHOD("Reboot", NULL, NULL, method_reboot, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2531         SD_BUS_METHOD("PowerOff", NULL, NULL, method_poweroff, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2532         SD_BUS_METHOD("Halt", NULL, NULL, method_halt, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2533         SD_BUS_METHOD("KExec", NULL, NULL, method_kexec, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2534         SD_BUS_METHOD("SwitchRoot", "ss", NULL, method_switch_root, SD_BUS_VTABLE_CAPABILITY(CAP_SYS_BOOT)),
2535         SD_BUS_METHOD("SetEnvironment", "as", NULL, method_set_environment, SD_BUS_VTABLE_UNPRIVILEGED),
2536         SD_BUS_METHOD("UnsetEnvironment", "as", NULL, method_unset_environment, SD_BUS_VTABLE_UNPRIVILEGED),
2537         SD_BUS_METHOD("UnsetAndSetEnvironment", "asas", NULL, method_unset_and_set_environment, SD_BUS_VTABLE_UNPRIVILEGED),
2538         SD_BUS_METHOD("ListUnitFiles", NULL, "a(ss)", method_list_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2539         SD_BUS_METHOD("ListUnitFilesByPatterns", "asas", "a(ss)", method_list_unit_files_by_patterns, SD_BUS_VTABLE_UNPRIVILEGED),
2540         SD_BUS_METHOD("GetUnitFileState", "s", "s", method_get_unit_file_state, SD_BUS_VTABLE_UNPRIVILEGED),
2541         SD_BUS_METHOD("EnableUnitFiles", "asbb", "ba(sss)", method_enable_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2542         SD_BUS_METHOD("DisableUnitFiles", "asb", "a(sss)", method_disable_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2543         SD_BUS_METHOD("ReenableUnitFiles", "asbb", "ba(sss)", method_reenable_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2544         SD_BUS_METHOD("LinkUnitFiles", "asbb", "a(sss)", method_link_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2545         SD_BUS_METHOD("PresetUnitFiles", "asbb", "ba(sss)", method_preset_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2546         SD_BUS_METHOD("PresetUnitFilesWithMode", "assbb", "ba(sss)", method_preset_unit_files_with_mode, SD_BUS_VTABLE_UNPRIVILEGED),
2547         SD_BUS_METHOD("MaskUnitFiles", "asbb", "a(sss)", method_mask_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2548         SD_BUS_METHOD("UnmaskUnitFiles", "asb", "a(sss)", method_unmask_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2549         SD_BUS_METHOD("RevertUnitFiles", "as", "a(sss)", method_revert_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2550         SD_BUS_METHOD("SetDefaultTarget", "sb", "a(sss)", method_set_default_target, SD_BUS_VTABLE_UNPRIVILEGED),
2551         SD_BUS_METHOD("GetDefaultTarget", NULL, "s", method_get_default_target, SD_BUS_VTABLE_UNPRIVILEGED),
2552         SD_BUS_METHOD("PresetAllUnitFiles", "sbb", "a(sss)", method_preset_all_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2553         SD_BUS_METHOD("AddDependencyUnitFiles", "asssbb", "a(sss)", method_add_dependency_unit_files, SD_BUS_VTABLE_UNPRIVILEGED),
2554         SD_BUS_METHOD("GetUnitFileLinks", "sb", "as", method_get_unit_file_links, SD_BUS_VTABLE_UNPRIVILEGED),
2555         SD_BUS_METHOD("SetExitCode", "y", NULL, method_set_exit_code, SD_BUS_VTABLE_UNPRIVILEGED),
2556         SD_BUS_METHOD("LookupDynamicUserByName", "s", "u", method_lookup_dynamic_user_by_name, SD_BUS_VTABLE_UNPRIVILEGED),
2557         SD_BUS_METHOD("LookupDynamicUserByUID", "u", "s", method_lookup_dynamic_user_by_uid, SD_BUS_VTABLE_UNPRIVILEGED),
2558
2559         SD_BUS_SIGNAL("UnitNew", "so", 0),
2560         SD_BUS_SIGNAL("UnitRemoved", "so", 0),
2561         SD_BUS_SIGNAL("JobNew", "uos", 0),
2562         SD_BUS_SIGNAL("JobRemoved", "uoss", 0),
2563         SD_BUS_SIGNAL("StartupFinished", "tttttt", 0),
2564         SD_BUS_SIGNAL("UnitFilesChanged", NULL, 0),
2565         SD_BUS_SIGNAL("Reloading", "b", 0),
2566
2567         SD_BUS_VTABLE_END
2568 };
2569
2570 static int send_finished(sd_bus *bus, void *userdata) {
2571         _cleanup_(sd_bus_message_unrefp) sd_bus_message *message = NULL;
2572         usec_t *times = userdata;
2573         int r;
2574
2575         assert(bus);
2576         assert(times);
2577
2578         r = sd_bus_message_new_signal(bus, &message, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "StartupFinished");
2579         if (r < 0)
2580                 return r;
2581
2582         r = sd_bus_message_append(message, "tttttt", times[0], times[1], times[2], times[3], times[4], times[5]);
2583         if (r < 0)
2584                 return r;
2585
2586         return sd_bus_send(bus, message, NULL);
2587 }
2588
2589 void bus_manager_send_finished(
2590                 Manager *m,
2591                 usec_t firmware_usec,
2592                 usec_t loader_usec,
2593                 usec_t kernel_usec,
2594                 usec_t initrd_usec,
2595                 usec_t userspace_usec,
2596                 usec_t total_usec) {
2597
2598         int r;
2599
2600         assert(m);
2601
2602         r = bus_foreach_bus(
2603                         m,
2604                         NULL,
2605                         send_finished,
2606                         (usec_t[6]) {
2607                                 firmware_usec,
2608                                 loader_usec,
2609                                 kernel_usec,
2610                                 initrd_usec,
2611                                 userspace_usec,
2612                                 total_usec
2613                         });
2614         if (r < 0)
2615                 log_debug_errno(r, "Failed to send finished signal: %m");
2616 }
2617
2618 static int send_reloading(sd_bus *bus, void *userdata) {
2619         _cleanup_(sd_bus_message_unrefp) sd_bus_message *message = NULL;
2620         int r;
2621
2622         assert(bus);
2623
2624         r = sd_bus_message_new_signal(bus, &message, "/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "Reloading");
2625         if (r < 0)
2626                 return r;
2627
2628         r = sd_bus_message_append(message, "b", PTR_TO_INT(userdata));
2629         if (r < 0)
2630                 return r;
2631
2632         return sd_bus_send(bus, message, NULL);
2633 }
2634
2635 void bus_manager_send_reloading(Manager *m, bool active) {
2636         int r;
2637
2638         assert(m);
2639
2640         r = bus_foreach_bus(m, NULL, send_reloading, INT_TO_PTR(active));
2641         if (r < 0)
2642                 log_debug_errno(r, "Failed to send reloading signal: %m");
2643 }
2644
2645 static int send_changed_signal(sd_bus *bus, void *userdata) {
2646         assert(bus);
2647
2648         return sd_bus_emit_properties_changed_strv(bus,
2649                                                    "/org/freedesktop/systemd1",
2650                                                    "org.freedesktop.systemd1.Manager",
2651                                                    NULL);
2652 }
2653
2654 void bus_manager_send_change_signal(Manager *m) {
2655         int r;
2656
2657         assert(m);
2658
2659         r = bus_foreach_bus(m, NULL, send_changed_signal, NULL);
2660         if (r < 0)
2661                 log_debug_errno(r, "Failed to send manager change signal: %m");
2662 }