src/machine/machine.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include <errno.h>
   4 #include <unistd.h>
   5 #include <sys/stat.h>
   6
   7 #include "sd-messages.h"
   8
   9 #include "alloc-util.h"
  10 #include "bus-error.h"
  11 #include "bus-util.h"
  12 #include "env-file.h"
  13 #include "errno-util.h"
  14 #include "escape.h"
  15 #include "extract-word.h"
  16 #include "fd-util.h"
  17 #include "fileio.h"
  18 #include "format-util.h"
  19 #include "hashmap.h"
  20 #include "machine-dbus.h"
  21 #include "machine.h"
  22 #include "mkdir.h"
  23 #include "parse-util.h"
  24 #include "path-util.h"
  25 #include "process-util.h"
  26 #include "serialize.h"
  27 #include "special.h"
  28 #include "stdio-util.h"
  29 #include "string-table.h"
  30 #include "terminal-util.h"
  31 #include "tmpfile-util.h"
  32 #include "unit-name.h"
  33 #include "user-util.h"
  34 #include "util.h"
  35
  36 Machine* machine_new(Manager *manager, MachineClass class, const char *name) {
  37         Machine *m;
  38
  39         assert(manager);
  40         assert(class < _MACHINE_CLASS_MAX);
  41         assert(name);
  42
  43         /* Passing class == _MACHINE_CLASS_INVALID here is fine. It
  44          * means as much as "we don't know yet", and that we'll figure
  45          * it out later when loading the state file. */
  46
  47         m = new0(Machine, 1);
  48         if (!m)
  49                 return NULL;
  50
  51         m->name = strdup(name);
  52         if (!m->name)
  53                 goto fail;
  54
  55         if (class != MACHINE_HOST) {
  56                 m->state_file = path_join("/run/systemd/machines", m->name);
  57                 if (!m->state_file)
  58                         goto fail;
  59         }
  60
  61         m->class = class;
  62
  63         if (hashmap_put(manager->machines, m->name, m) < 0)
  64                 goto fail;
  65
  66         m->manager = manager;
  67
  68         return m;
  69
  70 fail:
  71         free(m->state_file);
  72         free(m->name);
  73         return mfree(m);
  74 }
  75
  76 Machine* machine_free(Machine *m) {
  77         if (!m)
  78                 return NULL;
  79
  80         while (m->operations)
  81                 operation_free(m->operations);
  82
  83         if (m->in_gc_queue)
  84                 LIST_REMOVE(gc_queue, m->manager->machine_gc_queue, m);
  85
  86         machine_release_unit(m);
  87
  88         free(m->scope_job);
  89
  90         (void) hashmap_remove(m->manager->machines, m->name);
  91
  92         if (m->manager->host_machine == m)
  93                 m->manager->host_machine = NULL;
  94
  95         if (m->leader > 0)
  96                 (void) hashmap_remove_value(m->manager->machine_leaders, PID_TO_PTR(m->leader), m);
  97
  98         sd_bus_message_unref(m->create_message);
  99
 100         free(m->name);
 101         free(m->state_file);
 102         free(m->service);
 103         free(m->root_directory);
 104         free(m->netif);
 105         return mfree(m);
 106 }
 107
 108 int machine_save(Machine *m) {
 109         _cleanup_free_ char *temp_path = NULL;
 110         _cleanup_fclose_ FILE *f = NULL;
 111         int r;
 112
 113         assert(m);
 114
 115         if (!m->state_file)
 116                 return 0;
 117
 118         if (!m->started)
 119                 return 0;
 120
 121         r = mkdir_safe_label("/run/systemd/machines", 0755, 0, 0, MKDIR_WARN_MODE);
 122         if (r < 0)
 123                 goto fail;
 124
 125         r = fopen_temporary(m->state_file, &f, &temp_path);
 126         if (r < 0)
 127                 goto fail;
 128
 129         (void) fchmod(fileno(f), 0644);
 130
 131         fprintf(f,
 132                 "# This is private data. Do not parse.\n"
 133                 "NAME=%s\n",
 134                 m->name);
 135
 136         if (m->unit) {
 137                 _cleanup_free_ char *escaped;
 138
 139                 escaped = cescape(m->unit);
 140                 if (!escaped) {
 141                         r = -ENOMEM;
 142                         goto fail;
 143                 }
 144
 145                 fprintf(f, "SCOPE=%s\n", escaped); /* We continue to call this "SCOPE=" because it is internal only, and we want to stay compatible with old files */
 146         }
 147
 148         if (m->scope_job)
 149                 fprintf(f, "SCOPE_JOB=%s\n", m->scope_job);
 150
 151         if (m->service) {
 152                 _cleanup_free_ char *escaped;
 153
 154                 escaped = cescape(m->service);
 155                 if (!escaped) {
 156                         r = -ENOMEM;
 157                         goto fail;
 158                 }
 159                 fprintf(f, "SERVICE=%s\n", escaped);
 160         }
 161
 162         if (m->root_directory) {
 163                 _cleanup_free_ char *escaped;
 164
 165                 escaped = cescape(m->root_directory);
 166                 if (!escaped) {
 167                         r = -ENOMEM;
 168                         goto fail;
 169                 }
 170                 fprintf(f, "ROOT=%s\n", escaped);
 171         }
 172
 173         if (!sd_id128_is_null(m->id))
 174                 fprintf(f, "ID=" SD_ID128_FORMAT_STR "\n", SD_ID128_FORMAT_VAL(m->id));
 175
 176         if (m->leader != 0)
 177                 fprintf(f, "LEADER="PID_FMT"\n", m->leader);
 178
 179         if (m->class != _MACHINE_CLASS_INVALID)
 180                 fprintf(f, "CLASS=%s\n", machine_class_to_string(m->class));
 181
 182         if (dual_timestamp_is_set(&m->timestamp))
 183                 fprintf(f,
 184                         "REALTIME="USEC_FMT"\n"
 185                         "MONOTONIC="USEC_FMT"\n",
 186                         m->timestamp.realtime,
 187                         m->timestamp.monotonic);
 188
 189         if (m->n_netif > 0) {
 190                 size_t i;
 191
 192                 fputs("NETIF=", f);
 193
 194                 for (i = 0; i < m->n_netif; i++) {
 195                         if (i != 0)
 196                                 fputc(' ', f);
 197
 198                         fprintf(f, "%i", m->netif[i]);
 199                 }
 200
 201                 fputc('\n', f);
 202         }
 203
 204         r = fflush_and_check(f);
 205         if (r < 0)
 206                 goto fail;
 207
 208         if (rename(temp_path, m->state_file) < 0) {
 209                 r = -errno;
 210                 goto fail;
 211         }
 212
 213         if (m->unit) {
 214                 char *sl;
 215
 216                 /* Create a symlink from the unit name to the machine
 217                  * name, so that we can quickly find the machine for
 218                  * each given unit. Ignore error. */
 219                 sl = strjoina("/run/systemd/machines/unit:", m->unit);
 220                 (void) symlink(m->name, sl);
 221         }
 222
 223         return 0;
 224
 225 fail:
 226         (void) unlink(m->state_file);
 227
 228         if (temp_path)
 229                 (void) unlink(temp_path);
 230
 231         return log_error_errno(r, "Failed to save machine data %s: %m", m->state_file);
 232 }
 233
 234 static void machine_unlink(Machine *m) {
 235         assert(m);
 236
 237         if (m->unit) {
 238                 char *sl;
 239
 240                 sl = strjoina("/run/systemd/machines/unit:", m->unit);
 241                 (void) unlink(sl);
 242         }
 243
 244         if (m->state_file)
 245                 (void) unlink(m->state_file);
 246 }
 247
 248 int machine_load(Machine *m) {
 249         _cleanup_free_ char *realtime = NULL, *monotonic = NULL, *id = NULL, *leader = NULL, *class = NULL, *netif = NULL;
 250         int r;
 251
 252         assert(m);
 253
 254         if (!m->state_file)
 255                 return 0;
 256
 257         r = parse_env_file(NULL, m->state_file,
 258                            "SCOPE",     &m->unit,
 259                            "SCOPE_JOB", &m->scope_job,
 260                            "SERVICE",   &m->service,
 261                            "ROOT",      &m->root_directory,
 262                            "ID",        &id,
 263                            "LEADER",    &leader,
 264                            "CLASS",     &class,
 265                            "REALTIME",  &realtime,
 266                            "MONOTONIC", &monotonic,
 267                            "NETIF",     &netif);
 268         if (r < 0) {
 269                 if (r == -ENOENT)
 270                         return 0;
 271
 272                 return log_error_errno(r, "Failed to read %s: %m", m->state_file);
 273         }
 274
 275         if (id)
 276                 sd_id128_from_string(id, &m->id);
 277
 278         if (leader)
 279                 parse_pid(leader, &m->leader);
 280
 281         if (class) {
 282                 MachineClass c;
 283
 284                 c = machine_class_from_string(class);
 285                 if (c >= 0)
 286                         m->class = c;
 287         }
 288
 289         if (realtime)
 290                 (void) deserialize_usec(realtime, &m->timestamp.realtime);
 291         if (monotonic)
 292                 (void) deserialize_usec(monotonic, &m->timestamp.monotonic);
 293
 294         if (netif) {
 295                 size_t allocated = 0, nr = 0;
 296                 const char *p;
 297                 int *ni = NULL;
 298
 299                 p = netif;
 300                 for (;;) {
 301                         _cleanup_free_ char *word = NULL;
 302                         int ifi;
 303
 304                         r = extract_first_word(&p, &word, NULL, 0);
 305                         if (r == 0)
 306                                 break;
 307                         if (r == -ENOMEM)
 308                                 return log_oom();
 309                         if (r < 0) {
 310                                 log_warning_errno(r, "Failed to parse NETIF: %s", netif);
 311                                 break;
 312                         }
 313
 314                         if (parse_ifindex(word, &ifi) < 0)
 315                                 continue;
 316
 317                         if (!GREEDY_REALLOC(ni, allocated, nr+1)) {
 318                                 free(ni);
 319                                 return log_oom();
 320                         }
 321
 322                         ni[nr++] = ifi;
 323                 }
 324
 325                 free(m->netif);
 326                 m->netif = ni;
 327                 m->n_netif = nr;
 328         }
 329
 330         return r;
 331 }
 332
 333 static int machine_start_scope(
 334                 Manager *manager,
 335                 const char *scope,
 336                 pid_t pid,
 337                 const char *slice,
 338                 const char *description,
 339                 sd_bus_message *more_properties,
 340                 sd_bus_error *error,
 341                 char **job) {
 342
 343         _cleanup_(sd_bus_message_unrefp) sd_bus_message *m = NULL, *reply = NULL;
 344         int r;
 345
 346         assert(manager);
 347         assert(scope);
 348         assert(pid > 1);
 349
 350         r = sd_bus_message_new_method_call(
 351                         manager->bus,
 352                         &m,
 353                         "org.freedesktop.systemd1",
 354                         "/org/freedesktop/systemd1",
 355                         "org.freedesktop.systemd1.Manager",
 356                         "StartTransientUnit");
 357         if (r < 0)
 358                 return r;
 359
 360         r = sd_bus_message_append(m, "ss", strempty(scope), "fail");
 361         if (r < 0)
 362                 return r;
 363
 364         r = sd_bus_message_open_container(m, 'a', "(sv)");
 365         if (r < 0)
 366                 return r;
 367
 368         if (!isempty(slice)) {
 369                 r = sd_bus_message_append(m, "(sv)", "Slice", "s", slice);
 370                 if (r < 0)
 371                         return r;
 372         }
 373
 374         if (!isempty(description)) {
 375                 r = sd_bus_message_append(m, "(sv)", "Description", "s", description);
 376                 if (r < 0)
 377                         return r;
 378         }
 379
 380         r = sd_bus_message_append(m, "(sv)(sv)(sv)(sv)(sv)",
 381                                   "PIDs", "au", 1, pid,
 382                                   "Delegate", "b", 1,
 383                                   "CollectMode", "s", "inactive-or-failed",
 384                                   "AddRef", "b", 1,
 385                                   "TasksMax", "t", UINT64_C(16384));
 386         if (r < 0)
 387                 return r;
 388
 389         if (more_properties) {
 390                 r = sd_bus_message_copy(m, more_properties, true);
 391                 if (r < 0)
 392                         return r;
 393         }
 394
 395         r = sd_bus_message_close_container(m);
 396         if (r < 0)
 397                 return r;
 398
 399         r = sd_bus_message_append(m, "a(sa(sv))", 0);
 400         if (r < 0)
 401                 return r;
 402
 403         r = sd_bus_call(manager->bus, m, 0, error, &reply);
 404         if (r < 0)
 405                 return r;
 406
 407         if (job) {
 408                 const char *j;
 409                 char *copy;
 410
 411                 r = sd_bus_message_read(reply, "o", &j);
 412                 if (r < 0)
 413                         return r;
 414
 415                 copy = strdup(j);
 416                 if (!copy)
 417                         return -ENOMEM;
 418
 419                 *job = copy;
 420         }
 421
 422         return 1;
 423 }
 424
 425 static int machine_ensure_scope(Machine *m, sd_bus_message *properties, sd_bus_error *error) {
 426         assert(m);
 427         assert(m->class != MACHINE_HOST);
 428
 429         if (!m->unit) {
 430                 _cleanup_free_ char *escaped = NULL, *scope = NULL;
 431                 char *description, *job = NULL;
 432                 int r;
 433
 434                 escaped = unit_name_escape(m->name);
 435                 if (!escaped)
 436                         return log_oom();
 437
 438                 scope = strjoin("machine-", escaped, ".scope");
 439                 if (!scope)
 440                         return log_oom();
 441
 442                 description = strjoina(m->class == MACHINE_VM ? "Virtual Machine " : "Container ", m->name);
 443
 444                 r = machine_start_scope(m->manager, scope, m->leader, SPECIAL_MACHINE_SLICE, description, properties, error, &job);
 445                 if (r < 0)
 446                         return log_error_errno(r, "Failed to start machine scope: %s", bus_error_message(error, r));
 447
 448                 m->unit = TAKE_PTR(scope);
 449                 m->referenced = true;
 450                 free_and_replace(m->scope_job, job);
 451         }
 452
 453         if (m->unit)
 454                 hashmap_put(m->manager->machine_units, m->unit, m);
 455
 456         return 0;
 457 }
 458
 459 int machine_start(Machine *m, sd_bus_message *properties, sd_bus_error *error) {
 460         int r;
 461
 462         assert(m);
 463
 464         if (!IN_SET(m->class, MACHINE_CONTAINER, MACHINE_VM))
 465                 return -EOPNOTSUPP;
 466
 467         if (m->started)
 468                 return 0;
 469
 470         r = hashmap_put(m->manager->machine_leaders, PID_TO_PTR(m->leader), m);
 471         if (r < 0)
 472                 return r;
 473
 474         /* Create cgroup */
 475         r = machine_ensure_scope(m, properties, error);
 476         if (r < 0)
 477                 return r;
 478
 479         log_struct(LOG_INFO,
 480                    "MESSAGE_ID=" SD_MESSAGE_MACHINE_START_STR,
 481                    "NAME=%s", m->name,
 482                    "LEADER="PID_FMT, m->leader,
 483                    LOG_MESSAGE("New machine %s.", m->name));
 484
 485         if (!dual_timestamp_is_set(&m->timestamp))
 486                 dual_timestamp_get(&m->timestamp);
 487
 488         m->started = true;
 489
 490         /* Save new machine data */
 491         machine_save(m);
 492
 493         machine_send_signal(m, true);
 494         (void) manager_enqueue_nscd_cache_flush(m->manager);
 495
 496         return 0;
 497 }
 498
 499 static int machine_stop_scope(Machine *m) {
 500         _cleanup_(sd_bus_error_free) sd_bus_error error = SD_BUS_ERROR_NULL;
 501         char *job = NULL;
 502         int r, q;
 503
 504         assert(m);
 505         assert(m->class != MACHINE_HOST);
 506
 507         if (!m->unit)
 508                 return 0;
 509
 510         r = manager_stop_unit(m->manager, m->unit, &error, &job);
 511         if (r < 0) {
 512                 log_error_errno(r, "Failed to stop machine scope: %s", bus_error_message(&error, r));
 513                 sd_bus_error_free(&error);
 514         } else
 515                 free_and_replace(m->scope_job, job);
 516
 517         if (m->referenced) {
 518                 q = manager_unref_unit(m->manager, m->unit, &error);
 519                 if (q < 0)
 520                         log_warning_errno(q, "Failed to drop reference to machine scope, ignoring: %s", bus_error_message(&error, r));
 521                 m->referenced = false;
 522         }
 523
 524         return r;
 525 }
 526
 527 int machine_stop(Machine *m) {
 528         int r;
 529         assert(m);
 530
 531         if (!IN_SET(m->class, MACHINE_CONTAINER, MACHINE_VM))
 532                 return -EOPNOTSUPP;
 533
 534         r = machine_stop_scope(m);
 535
 536         m->stopping = true;
 537
 538         machine_save(m);
 539         (void) manager_enqueue_nscd_cache_flush(m->manager);
 540
 541         return r;
 542 }
 543
 544 int machine_finalize(Machine *m) {
 545         assert(m);
 546
 547         if (m->started) {
 548                 log_struct(LOG_INFO,
 549                            "MESSAGE_ID=" SD_MESSAGE_MACHINE_STOP_STR,
 550                            "NAME=%s", m->name,
 551                            "LEADER="PID_FMT, m->leader,
 552                            LOG_MESSAGE("Machine %s terminated.", m->name));
 553
 554                 m->stopping = true; /* The machine is supposed to be going away. Don't try to kill it. */
 555         }
 556
 557         machine_unlink(m);
 558         machine_add_to_gc_queue(m);
 559
 560         if (m->started) {
 561                 machine_send_signal(m, false);
 562                 m->started = false;
 563         }
 564
 565         return 0;
 566 }
 567
 568 bool machine_may_gc(Machine *m, bool drop_not_started) {
 569         assert(m);
 570
 571         if (m->class == MACHINE_HOST)
 572                 return false;
 573
 574         if (drop_not_started && !m->started)
 575                 return true;
 576
 577         if (m->scope_job && manager_job_is_active(m->manager, m->scope_job))
 578                 return false;
 579
 580         if (m->unit && manager_unit_is_active(m->manager, m->unit))
 581                 return false;
 582
 583         return true;
 584 }
 585
 586 void machine_add_to_gc_queue(Machine *m) {
 587         assert(m);
 588
 589         if (m->in_gc_queue)
 590                 return;
 591
 592         LIST_PREPEND(gc_queue, m->manager->machine_gc_queue, m);
 593         m->in_gc_queue = true;
 594 }
 595
 596 MachineState machine_get_state(Machine *s) {
 597         assert(s);
 598
 599         if (s->class == MACHINE_HOST)
 600                 return MACHINE_RUNNING;
 601
 602         if (s->stopping)
 603                 return MACHINE_CLOSING;
 604
 605         if (s->scope_job)
 606                 return MACHINE_OPENING;
 607
 608         return MACHINE_RUNNING;
 609 }
 610
 611 int machine_kill(Machine *m, KillWho who, int signo) {
 612         assert(m);
 613
 614         if (!IN_SET(m->class, MACHINE_VM, MACHINE_CONTAINER))
 615                 return -EOPNOTSUPP;
 616
 617         if (!m->unit)
 618                 return -ESRCH;
 619
 620         if (who == KILL_LEADER) {
 621                 /* If we shall simply kill the leader, do so directly */
 622
 623                 if (kill(m->leader, signo) < 0)
 624                         return -errno;
 625
 626                 return 0;
 627         }
 628
 629         /* Otherwise, make PID 1 do it for us, for the entire cgroup */
 630         return manager_kill_unit(m->manager, m->unit, signo, NULL);
 631 }
 632
 633 int machine_openpt(Machine *m, int flags, char **ret_slave) {
 634         assert(m);
 635
 636         switch (m->class) {
 637
 638         case MACHINE_HOST:
 639
 640                 return openpt_allocate(flags, ret_slave);
 641
 642         case MACHINE_CONTAINER:
 643                 if (m->leader <= 0)
 644                         return -EINVAL;
 645
 646                 return openpt_allocate_in_namespace(m->leader, flags, ret_slave);
 647
 648         default:
 649                 return -EOPNOTSUPP;
 650         }
 651 }
 652
 653 int machine_open_terminal(Machine *m, const char *path, int mode) {
 654         assert(m);
 655
 656         switch (m->class) {
 657
 658         case MACHINE_HOST:
 659                 return open_terminal(path, mode);
 660
 661         case MACHINE_CONTAINER:
 662                 if (m->leader <= 0)
 663                         return -EINVAL;
 664
 665                 return open_terminal_in_namespace(m->leader, path, mode);
 666
 667         default:
 668                 return -EOPNOTSUPP;
 669         }
 670 }
 671
 672 void machine_release_unit(Machine *m) {
 673         assert(m);
 674
 675         if (!m->unit)
 676                 return;
 677
 678         (void) hashmap_remove(m->manager->machine_units, m->unit);
 679         m->unit = mfree(m->unit);
 680 }
 681
 682 int machine_get_uid_shift(Machine *m, uid_t *ret) {
 683         char p[STRLEN("/proc//uid_map") + DECIMAL_STR_MAX(pid_t) + 1];
 684         uid_t uid_base, uid_shift, uid_range;
 685         gid_t gid_base, gid_shift, gid_range;
 686         _cleanup_fclose_ FILE *f = NULL;
 687         int k, r;
 688
 689         assert(m);
 690         assert(ret);
 691
 692         /* Return the base UID/GID of the specified machine. Note that this only works for containers with simple
 693          * mappings. In most cases setups should be simple like this, and administrators should only care about the
 694          * basic offset a container has relative to the host. This is what this function exposes.
 695          *
 696          * If we encounter any more complex mappings we politely refuse this with ENXIO. */
 697
 698         if (m->class == MACHINE_HOST) {
 699                 *ret = 0;
 700                 return 0;
 701         }
 702
 703         if (m->class != MACHINE_CONTAINER)
 704                 return -EOPNOTSUPP;
 705
 706         xsprintf(p, "/proc/" PID_FMT "/uid_map", m->leader);
 707         f = fopen(p, "re");
 708         if (!f) {
 709                 if (errno == ENOENT) {
 710                         /* If the file doesn't exist, user namespacing is off in the kernel, return a zero mapping hence. */
 711                         *ret = 0;
 712                         return 0;
 713                 }
 714
 715                 return -errno;
 716         }
 717
 718         /* Read the first line. There's at least one. */
 719         errno = 0;
 720         k = fscanf(f, UID_FMT " " UID_FMT " " UID_FMT "\n", &uid_base, &uid_shift, &uid_range);
 721         if (k != 3) {
 722                 if (ferror(f))
 723                         return errno_or_else(EIO);
 724
 725                 return -EBADMSG;
 726         }
 727
 728         /* Not a mapping starting at 0? Then it's a complex mapping we can't expose here. */
 729         if (uid_base != 0)
 730                 return -ENXIO;
 731         /* Insist that at least the nobody user is mapped, everything else is weird, and hence complex, and we don't support it */
 732         if (uid_range < UID_NOBODY)
 733                 return -ENXIO;
 734
 735         /* If there's more than one line, then we don't support this mapping. */
 736         r = safe_fgetc(f, NULL);
 737         if (r < 0)
 738                 return r;
 739         if (r != 0) /* Insist on EOF */
 740                 return -ENXIO;
 741
 742         fclose(f);
 743
 744         xsprintf(p, "/proc/" PID_FMT "/gid_map", m->leader);
 745         f = fopen(p, "re");
 746         if (!f)
 747                 return -errno;
 748
 749         /* Read the first line. There's at least one. */
 750         errno = 0;
 751         k = fscanf(f, GID_FMT " " GID_FMT " " GID_FMT "\n", &gid_base, &gid_shift, &gid_range);
 752         if (k != 3) {
 753                 if (ferror(f))
 754                         return errno_or_else(EIO);
 755
 756                 return -EBADMSG;
 757         }
 758
 759         /* If there's more than one line, then we don't support this file. */
 760         r = safe_fgetc(f, NULL);
 761         if (r < 0)
 762                 return r;
 763         if (r != 0) /* Insist on EOF */
 764                 return -ENXIO;
 765
 766         /* If the UID and GID mapping doesn't match, we don't support this mapping. */
 767         if (uid_base != (uid_t) gid_base)
 768                 return -ENXIO;
 769         if (uid_shift != (uid_t) gid_shift)
 770                 return -ENXIO;
 771         if (uid_range != (uid_t) gid_range)
 772                 return -ENXIO;
 773
 774         *ret = uid_shift;
 775         return 0;
 776 }
 777
 778 static const char* const machine_class_table[_MACHINE_CLASS_MAX] = {
 779         [MACHINE_CONTAINER] = "container",
 780         [MACHINE_VM] = "vm",
 781         [MACHINE_HOST] = "host",
 782 };
 783
 784 DEFINE_STRING_TABLE_LOOKUP(machine_class, MachineClass);
 785
 786 static const char* const machine_state_table[_MACHINE_STATE_MAX] = {
 787         [MACHINE_OPENING] = "opening",
 788         [MACHINE_RUNNING] = "running",
 789         [MACHINE_CLOSING] = "closing"
 790 };
 791
 792 DEFINE_STRING_TABLE_LOOKUP(machine_state, MachineState);
 793
 794 static const char* const kill_who_table[_KILL_WHO_MAX] = {
 795         [KILL_LEADER] = "leader",
 796         [KILL_ALL] = "all"
 797 };
 798
 799 DEFINE_STRING_TABLE_LOOKUP(kill_who, KillWho);