src/nspawn/nspawn-settings.c

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2
   3 #include "alloc-util.h"
   4 #include "cap-list.h"
   5 #include "conf-parser.h"
   6 #include "cpu-set-util.h"
   7 #include "hostname-util.h"
   8 #include "nspawn-network.h"
   9 #include "nspawn-settings.h"
  10 #include "parse-util.h"
  11 #include "process-util.h"
  12 #include "rlimit-util.h"
  13 #include "socket-util.h"
  14 #include "string-table.h"
  15 #include "string-util.h"
  16 #include "strv.h"
  17 #include "user-util.h"
  18 #include "util.h"
  19
  20 int settings_load(FILE *f, const char *path, Settings **ret) {
  21         _cleanup_(settings_freep) Settings *s = NULL;
  22         int r;
  23
  24         assert(path);
  25         assert(ret);
  26
  27         s = new0(Settings, 1);
  28         if (!s)
  29                 return -ENOMEM;
  30
  31         s->start_mode = _START_MODE_INVALID;
  32         s->personality = PERSONALITY_INVALID;
  33         s->userns_mode = _USER_NAMESPACE_MODE_INVALID;
  34         s->resolv_conf = _RESOLV_CONF_MODE_INVALID;
  35         s->link_journal = _LINK_JOURNAL_INVALID;
  36         s->timezone = _TIMEZONE_MODE_INVALID;
  37         s->uid_shift = UID_INVALID;
  38         s->uid_range = UID_INVALID;
  39         s->no_new_privileges = -1;
  40
  41         s->read_only = -1;
  42         s->volatile_mode = _VOLATILE_MODE_INVALID;
  43         s->userns_chown = -1;
  44
  45         s->private_network = -1;
  46         s->network_veth = -1;
  47
  48         r = config_parse(NULL, path, f,
  49                          "Exec\0"
  50                          "Network\0"
  51                          "Files\0",
  52                          config_item_perf_lookup, nspawn_gperf_lookup,
  53                          CONFIG_PARSE_WARN,
  54                          s);
  55         if (r < 0)
  56                 return r;
  57
  58         /* Make sure that if userns_mode is set, userns_chown is set to something appropriate, and vice versa. Either
  59          * both fields shall be initialized or neither. */
  60         if (s->userns_mode == USER_NAMESPACE_PICK)
  61                 s->userns_chown = true;
  62         else if (s->userns_mode != _USER_NAMESPACE_MODE_INVALID && s->userns_chown < 0)
  63                 s->userns_chown = false;
  64
  65         if (s->userns_chown >= 0 && s->userns_mode == _USER_NAMESPACE_MODE_INVALID)
  66                 s->userns_mode = USER_NAMESPACE_NO;
  67
  68         *ret = TAKE_PTR(s);
  69
  70         return 0;
  71 }
  72
  73 Settings* settings_free(Settings *s) {
  74
  75         if (!s)
  76                 return NULL;
  77
  78         strv_free(s->parameters);
  79         strv_free(s->environment);
  80         free(s->user);
  81         free(s->pivot_root_new);
  82         free(s->pivot_root_old);
  83         free(s->working_directory);
  84         strv_free(s->syscall_whitelist);
  85         strv_free(s->syscall_blacklist);
  86         rlimit_free_all(s->rlimit);
  87         free(s->hostname);
  88         s->cpuset = cpu_set_mfree(s->cpuset);
  89
  90         strv_free(s->network_interfaces);
  91         strv_free(s->network_macvlan);
  92         strv_free(s->network_ipvlan);
  93         strv_free(s->network_veth_extra);
  94         free(s->network_bridge);
  95         free(s->network_zone);
  96         expose_port_free_all(s->expose_ports);
  97
  98         custom_mount_free_all(s->custom_mounts, s->n_custom_mounts);
  99         return mfree(s);
 100 }
 101
 102 bool settings_private_network(Settings *s) {
 103         assert(s);
 104
 105         return
 106                 s->private_network > 0 ||
 107                 s->network_veth > 0 ||
 108                 s->network_bridge ||
 109                 s->network_zone ||
 110                 s->network_interfaces ||
 111                 s->network_macvlan ||
 112                 s->network_ipvlan ||
 113                 s->network_veth_extra;
 114 }
 115
 116 bool settings_network_veth(Settings *s) {
 117         assert(s);
 118
 119         return
 120                 s->network_veth > 0 ||
 121                 s->network_bridge ||
 122                 s->network_zone;
 123 }
 124
 125 DEFINE_CONFIG_PARSE_ENUM(config_parse_volatile_mode, volatile_mode, VolatileMode, "Failed to parse volatile mode");
 126
 127 int config_parse_expose_port(
 128                 const char *unit,
 129                 const char *filename,
 130                 unsigned line,
 131                 const char *section,
 132                 unsigned section_line,
 133                 const char *lvalue,
 134                 int ltype,
 135                 const char *rvalue,
 136                 void *data,
 137                 void *userdata) {
 138
 139         Settings *s = data;
 140         int r;
 141
 142         assert(filename);
 143         assert(lvalue);
 144         assert(rvalue);
 145
 146         r = expose_port_parse(&s->expose_ports, rvalue);
 147         if (r == -EEXIST) {
 148                 log_syntax(unit, LOG_ERR, filename, line, r, "Duplicate port specification, ignoring: %s", rvalue);
 149                 return 0;
 150         }
 151         if (r < 0) {
 152                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse host port %s: %m", rvalue);
 153                 return 0;
 154         }
 155
 156         return 0;
 157 }
 158
 159 int config_parse_capability(
 160                 const char *unit,
 161                 const char *filename,
 162                 unsigned line,
 163                 const char *section,
 164                 unsigned section_line,
 165                 const char *lvalue,
 166                 int ltype,
 167                 const char *rvalue,
 168                 void *data,
 169                 void *userdata) {
 170
 171         uint64_t u = 0, *result = data;
 172         int r;
 173
 174         assert(filename);
 175         assert(lvalue);
 176         assert(rvalue);
 177
 178         for (;;) {
 179                 _cleanup_free_ char *word = NULL;
 180
 181                 r = extract_first_word(&rvalue, &word, NULL, 0);
 182                 if (r < 0) {
 183                         log_syntax(unit, LOG_ERR, filename, line, r, "Failed to extract capability string, ignoring: %s", rvalue);
 184                         return 0;
 185                 }
 186                 if (r == 0)
 187                         break;
 188
 189                 r = capability_from_name(word);
 190                 if (r < 0) {
 191                         log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse capability, ignoring: %s", word);
 192                         continue;
 193                 }
 194
 195                 u |= UINT64_C(1) << r;
 196         }
 197
 198         if (u == 0)
 199                 return 0;
 200
 201         *result |= u;
 202         return 0;
 203 }
 204
 205 int config_parse_id128(
 206                 const char *unit,
 207                 const char *filename,
 208                 unsigned line,
 209                 const char *section,
 210                 unsigned section_line,
 211                 const char *lvalue,
 212                 int ltype,
 213                 const char *rvalue,
 214                 void *data,
 215                 void *userdata) {
 216
 217         sd_id128_t t, *result = data;
 218         int r;
 219
 220         assert(filename);
 221         assert(lvalue);
 222         assert(rvalue);
 223
 224         r = sd_id128_from_string(rvalue, &t);
 225         if (r < 0) {
 226                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse 128bit ID/UUID, ignoring: %s", rvalue);
 227                 return 0;
 228         }
 229
 230         *result = t;
 231         return 0;
 232 }
 233
 234 int config_parse_pivot_root(
 235                 const char *unit,
 236                 const char *filename,
 237                 unsigned line,
 238                 const char *section,
 239                 unsigned section_line,
 240                 const char *lvalue,
 241                 int ltype,
 242                 const char *rvalue,
 243                 void *data,
 244                 void *userdata) {
 245
 246         Settings *settings = data;
 247         int r;
 248
 249         assert(filename);
 250         assert(lvalue);
 251         assert(rvalue);
 252
 253         r = pivot_root_parse(&settings->pivot_root_new, &settings->pivot_root_old, rvalue);
 254         if (r < 0) {
 255                 log_syntax(unit, LOG_ERR, filename, line, r, "Invalid pivot root mount specification %s: %m", rvalue);
 256                 return 0;
 257         }
 258
 259         return 0;
 260 }
 261
 262 int config_parse_bind(
 263                 const char *unit,
 264                 const char *filename,
 265                 unsigned line,
 266                 const char *section,
 267                 unsigned section_line,
 268                 const char *lvalue,
 269                 int ltype,
 270                 const char *rvalue,
 271                 void *data,
 272                 void *userdata) {
 273
 274         Settings *settings = data;
 275         int r;
 276
 277         assert(filename);
 278         assert(lvalue);
 279         assert(rvalue);
 280
 281         r = bind_mount_parse(&settings->custom_mounts, &settings->n_custom_mounts, rvalue, ltype);
 282         if (r < 0) {
 283                 log_syntax(unit, LOG_ERR, filename, line, r, "Invalid bind mount specification %s: %m", rvalue);
 284                 return 0;
 285         }
 286
 287         return 0;
 288 }
 289
 290 int config_parse_tmpfs(
 291                 const char *unit,
 292                 const char *filename,
 293                 unsigned line,
 294                 const char *section,
 295                 unsigned section_line,
 296                 const char *lvalue,
 297                 int ltype,
 298                 const char *rvalue,
 299                 void *data,
 300                 void *userdata) {
 301
 302         Settings *settings = data;
 303         int r;
 304
 305         assert(filename);
 306         assert(lvalue);
 307         assert(rvalue);
 308
 309         r = tmpfs_mount_parse(&settings->custom_mounts, &settings->n_custom_mounts, rvalue);
 310         if (r < 0) {
 311                 log_syntax(unit, LOG_ERR, filename, line, r, "Invalid temporary file system specification %s: %m", rvalue);
 312                 return 0;
 313         }
 314
 315         return 0;
 316 }
 317
 318 int config_parse_overlay(
 319                 const char *unit,
 320                 const char *filename,
 321                 unsigned line,
 322                 const char *section,
 323                 unsigned section_line,
 324                 const char *lvalue,
 325                 int ltype,
 326                 const char *rvalue,
 327                 void *data,
 328                 void *userdata) {
 329
 330         Settings *settings = data;
 331         int r;
 332
 333         assert(filename);
 334         assert(lvalue);
 335         assert(rvalue);
 336
 337         r = overlay_mount_parse(&settings->custom_mounts, &settings->n_custom_mounts, rvalue, ltype);
 338         if (r < 0)
 339                 log_syntax(unit, LOG_ERR, filename, line, r, "Invalid overlay file system specification %s, ignoring: %m", rvalue);
 340
 341         return 0;
 342 }
 343
 344 int config_parse_veth_extra(
 345                 const char *unit,
 346                 const char *filename,
 347                 unsigned line,
 348                 const char *section,
 349                 unsigned section_line,
 350                 const char *lvalue,
 351                 int ltype,
 352                 const char *rvalue,
 353                 void *data,
 354                 void *userdata) {
 355
 356         Settings *settings = data;
 357         int r;
 358
 359         assert(filename);
 360         assert(lvalue);
 361         assert(rvalue);
 362
 363         r = veth_extra_parse(&settings->network_veth_extra, rvalue);
 364         if (r < 0) {
 365                 log_syntax(unit, LOG_ERR, filename, line, r, "Invalid extra virtual Ethernet link specification %s: %m", rvalue);
 366                 return 0;
 367         }
 368
 369         return 0;
 370 }
 371
 372 int config_parse_network_zone(
 373                 const char *unit,
 374                 const char *filename,
 375                 unsigned line,
 376                 const char *section,
 377                 unsigned section_line,
 378                 const char *lvalue,
 379                 int ltype,
 380                 const char *rvalue,
 381                 void *data,
 382                 void *userdata) {
 383
 384         Settings *settings = data;
 385         _cleanup_free_ char *j = NULL;
 386
 387         assert(filename);
 388         assert(lvalue);
 389         assert(rvalue);
 390
 391         j = strappend("vz-", rvalue);
 392         if (!ifname_valid(j)) {
 393                 log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid network zone name, ignoring: %s", rvalue);
 394                 return 0;
 395         }
 396
 397         free_and_replace(settings->network_zone, j);
 398
 399         return 0;
 400 }
 401
 402 int config_parse_boot(
 403                 const char *unit,
 404                 const char *filename,
 405                 unsigned line,
 406                 const char *section,
 407                 unsigned section_line,
 408                 const char *lvalue,
 409                 int ltype,
 410                 const char *rvalue,
 411                 void *data,
 412                 void *userdata) {
 413
 414         Settings *settings = data;
 415         int r;
 416
 417         assert(filename);
 418         assert(lvalue);
 419         assert(rvalue);
 420
 421         r = parse_boolean(rvalue);
 422         if (r < 0) {
 423                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse Boot= parameter %s, ignoring: %m", rvalue);
 424                 return 0;
 425         }
 426
 427         if (r > 0) {
 428                 if (settings->start_mode == START_PID2)
 429                         goto conflict;
 430
 431                 settings->start_mode = START_BOOT;
 432         } else {
 433                 if (settings->start_mode == START_BOOT)
 434                         goto conflict;
 435
 436                 if (settings->start_mode < 0)
 437                         settings->start_mode = START_PID1;
 438         }
 439
 440         return 0;
 441
 442 conflict:
 443         log_syntax(unit, LOG_ERR, filename, line, r, "Conflicting Boot= or ProcessTwo= setting found. Ignoring.");
 444         return 0;
 445 }
 446
 447 int config_parse_pid2(
 448                 const char *unit,
 449                 const char *filename,
 450                 unsigned line,
 451                 const char *section,
 452                 unsigned section_line,
 453                 const char *lvalue,
 454                 int ltype,
 455                 const char *rvalue,
 456                 void *data,
 457                 void *userdata) {
 458
 459         Settings *settings = data;
 460         int r;
 461
 462         assert(filename);
 463         assert(lvalue);
 464         assert(rvalue);
 465
 466         r = parse_boolean(rvalue);
 467         if (r < 0) {
 468                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse ProcessTwo= parameter %s, ignoring: %m", rvalue);
 469                 return 0;
 470         }
 471
 472         if (r > 0) {
 473                 if (settings->start_mode == START_BOOT)
 474                         goto conflict;
 475
 476                 settings->start_mode = START_PID2;
 477         } else {
 478                 if (settings->start_mode == START_PID2)
 479                         goto conflict;
 480
 481                 if (settings->start_mode < 0)
 482                         settings->start_mode = START_PID1;
 483         }
 484
 485         return 0;
 486
 487 conflict:
 488         log_syntax(unit, LOG_ERR, filename, line, r, "Conflicting Boot= or ProcessTwo= setting found. Ignoring.");
 489         return 0;
 490 }
 491
 492 int config_parse_private_users(
 493                 const char *unit,
 494                 const char *filename,
 495                 unsigned line,
 496                 const char *section,
 497                 unsigned section_line,
 498                 const char *lvalue,
 499                 int ltype,
 500                 const char *rvalue,
 501                 void *data,
 502                 void *userdata) {
 503
 504         Settings *settings = data;
 505         int r;
 506
 507         assert(filename);
 508         assert(lvalue);
 509         assert(rvalue);
 510
 511         r = parse_boolean(rvalue);
 512         if (r == 0) {
 513                 /* no: User namespacing off */
 514                 settings->userns_mode = USER_NAMESPACE_NO;
 515                 settings->uid_shift = UID_INVALID;
 516                 settings->uid_range = UINT32_C(0x10000);
 517         } else if (r > 0) {
 518                 /* yes: User namespacing on, UID range is read from root dir */
 519                 settings->userns_mode = USER_NAMESPACE_FIXED;
 520                 settings->uid_shift = UID_INVALID;
 521                 settings->uid_range = UINT32_C(0x10000);
 522         } else if (streq(rvalue, "pick")) {
 523                 /* pick: User namespacing on, UID range is picked randomly */
 524                 settings->userns_mode = USER_NAMESPACE_PICK;
 525                 settings->uid_shift = UID_INVALID;
 526                 settings->uid_range = UINT32_C(0x10000);
 527         } else {
 528                 const char *range, *shift;
 529                 uid_t sh, rn;
 530
 531                 /* anything else: User namespacing on, UID range is explicitly configured */
 532
 533                 range = strchr(rvalue, ':');
 534                 if (range) {
 535                         shift = strndupa(rvalue, range - rvalue);
 536                         range++;
 537
 538                         r = safe_atou32(range, &rn);
 539                         if (r < 0 || rn <= 0) {
 540                                 log_syntax(unit, LOG_ERR, filename, line, r, "UID/GID range invalid, ignoring: %s", range);
 541                                 return 0;
 542                         }
 543                 } else {
 544                         shift = rvalue;
 545                         rn = UINT32_C(0x10000);
 546                 }
 547
 548                 r = parse_uid(shift, &sh);
 549                 if (r < 0) {
 550                         log_syntax(unit, LOG_ERR, filename, line, r, "UID/GID shift invalid, ignoring: %s", range);
 551                         return 0;
 552                 }
 553
 554                 settings->userns_mode = USER_NAMESPACE_FIXED;
 555                 settings->uid_shift = sh;
 556                 settings->uid_range = rn;
 557         }
 558
 559         return 0;
 560 }
 561
 562 int config_parse_syscall_filter(
 563                 const char *unit,
 564                 const char *filename,
 565                 unsigned line,
 566                 const char *section,
 567                 unsigned section_line,
 568                 const char *lvalue,
 569                 int ltype,
 570                 const char *rvalue,
 571                 void *data,
 572                 void *userdata) {
 573
 574         Settings *settings = data;
 575         bool negative;
 576         const char *items;
 577         int r;
 578
 579         assert(filename);
 580         assert(lvalue);
 581         assert(rvalue);
 582
 583         negative = rvalue[0] == '~';
 584         items = negative ? rvalue + 1 : rvalue;
 585
 586         for (;;) {
 587                 _cleanup_free_ char *word = NULL;
 588
 589                 r = extract_first_word(&items, &word, NULL, 0);
 590                 if (r == 0)
 591                         break;
 592                 if (r == -ENOMEM)
 593                         return log_oom();
 594                 if (r < 0) {
 595                         log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse SystemCallFilter= parameter %s, ignoring: %m", rvalue);
 596                         return 0;
 597                 }
 598
 599                 if (negative)
 600                         r = strv_extend(&settings->syscall_blacklist, word);
 601                 else
 602                         r = strv_extend(&settings->syscall_whitelist, word);
 603                 if (r < 0)
 604                         return log_oom();
 605         }
 606
 607         return 0;
 608 }
 609
 610 int config_parse_hostname(
 611                 const char *unit,
 612                 const char *filename,
 613                 unsigned line,
 614                 const char *section,
 615                 unsigned section_line,
 616                 const char *lvalue,
 617                 int ltype,
 618                 const char *rvalue,
 619                 void *data,
 620                 void *userdata) {
 621
 622         char **s = data;
 623
 624         assert(rvalue);
 625         assert(s);
 626
 627         if (!hostname_is_valid(rvalue, false)) {
 628                 log_syntax(unit, LOG_ERR, filename, line, 0, "Invalid hostname, ignoring: %s", rvalue);
 629                 return 0;
 630         }
 631
 632         if (free_and_strdup(s, empty_to_null(rvalue)) < 0)
 633                 return log_oom();
 634
 635         return 0;
 636 }
 637
 638 int config_parse_oom_score_adjust(
 639                 const char *unit,
 640                 const char *filename,
 641                 unsigned line,
 642                 const char *section,
 643                 unsigned section_line,
 644                 const char *lvalue,
 645                 int ltype,
 646                 const char *rvalue,
 647                 void *data,
 648                 void *userdata) {
 649
 650         Settings *settings = data;
 651         int oa, r;
 652
 653         assert(rvalue);
 654         assert(settings);
 655
 656         if (isempty(rvalue)) {
 657                 settings->oom_score_adjust_set = false;
 658                 return 0;
 659         }
 660
 661         r = parse_oom_score_adjust(rvalue, &oa);
 662         if (r == -ERANGE) {
 663                 log_syntax(unit, LOG_ERR, filename, line, r, "OOM score adjust value out of range, ignoring: %s", rvalue);
 664                 return 0;
 665         }
 666         if (r < 0) {
 667                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse the OOM score adjust value, ignoring: %s", rvalue);
 668                 return 0;
 669         }
 670
 671         settings->oom_score_adjust = oa;
 672         settings->oom_score_adjust_set = true;
 673
 674         return 0;
 675 }
 676
 677 int config_parse_cpu_affinity(
 678                 const char *unit,
 679                 const char *filename,
 680                 unsigned line,
 681                 const char *section,
 682                 unsigned section_line,
 683                 const char *lvalue,
 684                 int ltype,
 685                 const char *rvalue,
 686                 void *data,
 687                 void *userdata) {
 688
 689         _cleanup_cpu_free_ cpu_set_t *cpuset = NULL;
 690         Settings *settings = data;
 691         int ncpus;
 692
 693         assert(rvalue);
 694         assert(settings);
 695
 696         ncpus = parse_cpu_set_and_warn(rvalue, &cpuset, unit, filename, line, lvalue);
 697         if (ncpus < 0)
 698                 return ncpus;
 699
 700         if (ncpus == 0) {
 701                 /* An empty assignment resets the CPU list */
 702                 settings->cpuset = cpu_set_mfree(settings->cpuset);
 703                 settings->cpuset_ncpus = 0;
 704                 return 0;
 705         }
 706
 707         if (!settings->cpuset) {
 708                 settings->cpuset = TAKE_PTR(cpuset);
 709                 settings->cpuset_ncpus = (unsigned) ncpus;
 710                 return 0;
 711         }
 712
 713         if (settings->cpuset_ncpus < (unsigned) ncpus) {
 714                 CPU_OR_S(CPU_ALLOC_SIZE(settings->cpuset_ncpus), cpuset, settings->cpuset, cpuset);
 715                 CPU_FREE(settings->cpuset);
 716                 settings->cpuset = TAKE_PTR(cpuset);
 717                 settings->cpuset_ncpus = (unsigned) ncpus;
 718                 return 0;
 719         }
 720
 721         CPU_OR_S(CPU_ALLOC_SIZE((unsigned) ncpus), settings->cpuset, settings->cpuset, cpuset);
 722
 723         return 0;
 724 }
 725
 726 DEFINE_CONFIG_PARSE_ENUM(config_parse_resolv_conf, resolv_conf_mode, ResolvConfMode, "Failed to parse resolv.conf mode");
 727
 728 static const char *const resolv_conf_mode_table[_RESOLV_CONF_MODE_MAX] = {
 729         [RESOLV_CONF_OFF] = "off",
 730         [RESOLV_CONF_COPY_HOST] = "copy-host",
 731         [RESOLV_CONF_COPY_STATIC] = "copy-static",
 732         [RESOLV_CONF_BIND_HOST] = "bind-host",
 733         [RESOLV_CONF_BIND_STATIC] = "bind-static",
 734         [RESOLV_CONF_DELETE] = "delete",
 735         [RESOLV_CONF_AUTO] = "auto",
 736 };
 737
 738 DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(resolv_conf_mode, ResolvConfMode, RESOLV_CONF_AUTO);
 739
 740 int parse_link_journal(const char *s, LinkJournal *ret_mode, bool *ret_try) {
 741         assert(s);
 742         assert(ret_mode);
 743         assert(ret_try);
 744
 745         if (streq(s, "auto")) {
 746                 *ret_mode = LINK_AUTO;
 747                 *ret_try = false;
 748         } else if (streq(s, "no")) {
 749                 *ret_mode = LINK_NO;
 750                 *ret_try = false;
 751         } else if (streq(s, "guest")) {
 752                 *ret_mode = LINK_GUEST;
 753                 *ret_try = false;
 754         } else if (streq(s, "host")) {
 755                 *ret_mode = LINK_HOST;
 756                 *ret_try = false;
 757         } else if (streq(s, "try-guest")) {
 758                 *ret_mode = LINK_GUEST;
 759                 *ret_try = true;
 760         } else if (streq(s, "try-host")) {
 761                 *ret_mode = LINK_HOST;
 762                 *ret_try = true;
 763         } else
 764                 return -EINVAL;
 765
 766         return 0;
 767 }
 768
 769 int config_parse_link_journal(
 770                 const char *unit,
 771                 const char *filename,
 772                 unsigned line,
 773                 const char *section,
 774                 unsigned section_line,
 775                 const char *lvalue,
 776                 int ltype,
 777                 const char *rvalue,
 778                 void *data,
 779                 void *userdata) {
 780
 781         Settings *settings = data;
 782         int r;
 783
 784         assert(rvalue);
 785         assert(settings);
 786
 787         r = parse_link_journal(rvalue, &settings->link_journal, &settings->link_journal_try);
 788         if (r < 0) {
 789                 log_syntax(unit, LOG_ERR, filename, line, r, "Failed to parse link journal mode, ignoring: %s", rvalue);
 790                 return 0;
 791         }
 792
 793         return 0;
 794 }
 795
 796 DEFINE_CONFIG_PARSE_ENUM(config_parse_timezone, timezone_mode, TimezoneMode, "Failed to parse timezone mode");
 797
 798 static const char *const timezone_mode_table[_TIMEZONE_MODE_MAX] = {
 799         [TIMEZONE_OFF] = "off",
 800         [TIMEZONE_COPY] = "copy",
 801         [TIMEZONE_BIND] = "bind",
 802         [TIMEZONE_SYMLINK] = "symlink",
 803         [TIMEZONE_DELETE] = "delete",
 804         [TIMEZONE_AUTO] = "auto",
 805 };
 806
 807 DEFINE_STRING_TABLE_LOOKUP_WITH_BOOLEAN(timezone_mode, TimezoneMode, TIMEZONE_AUTO);