git.oblomov.eu Git - git/blob - builtin/init-db.c

   1 /*
   2  * GIT - The information manager from hell
   3  *
   4  * Copyright (C) Linus Torvalds, 2005
   5  */
   6 #include "cache.h"
   7 #include "config.h"
   8 #include "refs.h"
   9 #include "builtin.h"
  10 #include "exec-cmd.h"
  11 #include "parse-options.h"
  12
  13 #ifndef DEFAULT_GIT_TEMPLATE_DIR
  14 #define DEFAULT_GIT_TEMPLATE_DIR "/usr/share/git-core/templates"
  15 #endif
  16
  17 #ifdef NO_TRUSTABLE_FILEMODE
  18 #define TEST_FILEMODE 0
  19 #else
  20 #define TEST_FILEMODE 1
  21 #endif
  22
  23 static int init_is_bare_repository = 0;
  24 static int init_shared_repository = -1;
  25 static const char *init_db_template_dir;
  26
  27 static void copy_templates_1(struct strbuf *path, struct strbuf *template_path,
  28                              DIR *dir)
  29 {
  30         size_t path_baselen = path->len;
  31         size_t template_baselen = template_path->len;
  32         struct dirent *de;
  33
  34         /* Note: if ".git/hooks" file exists in the repository being
  35          * re-initialized, /etc/core-git/templates/hooks/update would
  36          * cause "git init" to fail here.  I think this is sane but
  37          * it means that the set of templates we ship by default, along
  38          * with the way the namespace under .git/ is organized, should
  39          * be really carefully chosen.
  40          */
  41         safe_create_dir(path->buf, 1);
  42         while ((de = readdir(dir)) != NULL) {
  43                 struct stat st_git, st_template;
  44                 int exists = 0;
  45
  46                 strbuf_setlen(path, path_baselen);
  47                 strbuf_setlen(template_path, template_baselen);
  48
  49                 if (de->d_name[0] == '.')
  50                         continue;
  51                 strbuf_addstr(path, de->d_name);
  52                 strbuf_addstr(template_path, de->d_name);
  53                 if (lstat(path->buf, &st_git)) {
  54                         if (errno != ENOENT)
  55                                 die_errno(_("cannot stat '%s'"), path->buf);
  56                 }
  57                 else
  58                         exists = 1;
  59
  60                 if (lstat(template_path->buf, &st_template))
  61                         die_errno(_("cannot stat template '%s'"), template_path->buf);
  62
  63                 if (S_ISDIR(st_template.st_mode)) {
  64                         DIR *subdir = opendir(template_path->buf);
  65                         if (!subdir)
  66                                 die_errno(_("cannot opendir '%s'"), template_path->buf);
  67                         strbuf_addch(path, '/');
  68                         strbuf_addch(template_path, '/');
  69                         copy_templates_1(path, template_path, subdir);
  70                         closedir(subdir);
  71                 }
  72                 else if (exists)
  73                         continue;
  74                 else if (S_ISLNK(st_template.st_mode)) {
  75                         struct strbuf lnk = STRBUF_INIT;
  76                         if (strbuf_readlink(&lnk, template_path->buf,
  77                                             st_template.st_size) < 0)
  78                                 die_errno(_("cannot readlink '%s'"), template_path->buf);
  79                         if (symlink(lnk.buf, path->buf))
  80                                 die_errno(_("cannot symlink '%s' '%s'"),
  81                                           lnk.buf, path->buf);
  82                         strbuf_release(&lnk);
  83                 }
  84                 else if (S_ISREG(st_template.st_mode)) {
  85                         if (copy_file(path->buf, template_path->buf, st_template.st_mode))
  86                                 die_errno(_("cannot copy '%s' to '%s'"),
  87                                           template_path->buf, path->buf);
  88                 }
  89                 else
  90                         error(_("ignoring template %s"), template_path->buf);
  91         }
  92 }
  93
  94 static void copy_templates(const char *template_dir)
  95 {
  96         struct strbuf path = STRBUF_INIT;
  97         struct strbuf template_path = STRBUF_INIT;
  98         size_t template_len;
  99         struct repository_format template_format = REPOSITORY_FORMAT_INIT;
 100         struct strbuf err = STRBUF_INIT;
 101         DIR *dir;
 102         char *to_free = NULL;
 103
 104         if (!template_dir)
 105                 template_dir = getenv(TEMPLATE_DIR_ENVIRONMENT);
 106         if (!template_dir)
 107                 template_dir = init_db_template_dir;
 108         if (!template_dir)
 109                 template_dir = to_free = system_path(DEFAULT_GIT_TEMPLATE_DIR);
 110         if (!template_dir[0]) {
 111                 free(to_free);
 112                 return;
 113         }
 114
 115         strbuf_addstr(&template_path, template_dir);
 116         strbuf_complete(&template_path, '/');
 117         template_len = template_path.len;
 118
 119         dir = opendir(template_path.buf);
 120         if (!dir) {
 121                 warning(_("templates not found in %s"), template_dir);
 122                 goto free_return;
 123         }
 124
 125         /* Make sure that template is from the correct vintage */
 126         strbuf_addstr(&template_path, "config");
 127         read_repository_format(&template_format, template_path.buf);
 128         strbuf_setlen(&template_path, template_len);
 129
 130         /*
 131          * No mention of version at all is OK, but anything else should be
 132          * verified.
 133          */
 134         if (template_format.version >= 0 &&
 135             verify_repository_format(&template_format, &err) < 0) {
 136                 warning(_("not copying templates from '%s': %s"),
 137                           template_dir, err.buf);
 138                 strbuf_release(&err);
 139                 goto close_free_return;
 140         }
 141
 142         strbuf_addstr(&path, get_git_common_dir());
 143         strbuf_complete(&path, '/');
 144         copy_templates_1(&path, &template_path, dir);
 145 close_free_return:
 146         closedir(dir);
 147 free_return:
 148         free(to_free);
 149         strbuf_release(&path);
 150         strbuf_release(&template_path);
 151         clear_repository_format(&template_format);
 152 }
 153
 154 static int git_init_db_config(const char *k, const char *v, void *cb)
 155 {
 156         if (!strcmp(k, "init.templatedir"))
 157                 return git_config_pathname(&init_db_template_dir, k, v);
 158
 159         if (starts_with(k, "core."))
 160                 return platform_core_config(k, v, cb);
 161
 162         return 0;
 163 }
 164
 165 /*
 166  * If the git_dir is not directly inside the working tree, then git will not
 167  * find it by default, and we need to set the worktree explicitly.
 168  */
 169 static int needs_work_tree_config(const char *git_dir, const char *work_tree)
 170 {
 171         if (!strcmp(work_tree, "/") && !strcmp(git_dir, "/.git"))
 172                 return 0;
 173         if (skip_prefix(git_dir, work_tree, &git_dir) &&
 174             !strcmp(git_dir, "/.git"))
 175                 return 0;
 176         return 1;
 177 }
 178
 179 static int create_default_files(const char *template_path,
 180                                 const char *original_git_dir,
 181                                 const struct repository_format *fmt)
 182 {
 183         struct stat st1;
 184         struct strbuf buf = STRBUF_INIT;
 185         char *path;
 186         char repo_version_string[10];
 187         char junk[2];
 188         int reinit;
 189         int filemode;
 190         struct strbuf err = STRBUF_INIT;
 191         int repo_version = GIT_REPO_VERSION;
 192
 193         /* Just look for `init.templatedir` */
 194         init_db_template_dir = NULL; /* re-set in case it was set before */
 195         git_config(git_init_db_config, NULL);
 196
 197         /*
 198          * First copy the templates -- we might have the default
 199          * config file there, in which case we would want to read
 200          * from it after installing.
 201          *
 202          * Before reading that config, we also need to clear out any cached
 203          * values (since we've just potentially changed what's available on
 204          * disk).
 205          */
 206         copy_templates(template_path);
 207         git_config_clear();
 208         reset_shared_repository();
 209         git_config(git_default_config, NULL);
 210
 211         /*
 212          * We must make sure command-line options continue to override any
 213          * values we might have just re-read from the config.
 214          */
 215         is_bare_repository_cfg = init_is_bare_repository;
 216         if (init_shared_repository != -1)
 217                 set_shared_repository(init_shared_repository);
 218
 219         /*
 220          * We would have created the above under user's umask -- under
 221          * shared-repository settings, we would need to fix them up.
 222          */
 223         if (get_shared_repository()) {
 224                 adjust_shared_perm(get_git_dir());
 225         }
 226
 227         /*
 228          * We need to create a "refs" dir in any case so that older
 229          * versions of git can tell that this is a repository.
 230          */
 231         safe_create_dir(git_path("refs"), 1);
 232         adjust_shared_perm(git_path("refs"));
 233
 234         if (refs_init_db(&err))
 235                 die("failed to set up refs db: %s", err.buf);
 236
 237         /*
 238          * Create the default symlink from ".git/HEAD" to the "master"
 239          * branch, if it does not exist yet.
 240          */
 241         path = git_path_buf(&buf, "HEAD");
 242         reinit = (!access(path, R_OK)
 243                   || readlink(path, junk, sizeof(junk)-1) != -1);
 244         if (!reinit) {
 245                 if (create_symref("HEAD", "refs/heads/master", NULL) < 0)
 246                         exit(1);
 247         }
 248
 249 #ifndef ENABLE_SHA256
 250         if (fmt->hash_algo != GIT_HASH_SHA1)
 251                 die(_("The hash algorithm %s is not supported in this build."), hash_algos[fmt->hash_algo].name);
 252 #endif
 253
 254         if (fmt->hash_algo != GIT_HASH_SHA1)
 255                 repo_version = GIT_REPO_VERSION_READ;
 256
 257         /* This forces creation of new config file */
 258         xsnprintf(repo_version_string, sizeof(repo_version_string),
 259                   "%d", repo_version);
 260         git_config_set("core.repositoryformatversion", repo_version_string);
 261
 262         if (fmt->hash_algo != GIT_HASH_SHA1)
 263                 git_config_set("extensions.objectformat",
 264                                hash_algos[fmt->hash_algo].name);
 265
 266         /* Check filemode trustability */
 267         path = git_path_buf(&buf, "config");
 268         filemode = TEST_FILEMODE;
 269         if (TEST_FILEMODE && !lstat(path, &st1)) {
 270                 struct stat st2;
 271                 filemode = (!chmod(path, st1.st_mode ^ S_IXUSR) &&
 272                                 !lstat(path, &st2) &&
 273                                 st1.st_mode != st2.st_mode &&
 274                                 !chmod(path, st1.st_mode));
 275                 if (filemode && !reinit && (st1.st_mode & S_IXUSR))
 276                         filemode = 0;
 277         }
 278         git_config_set("core.filemode", filemode ? "true" : "false");
 279
 280         if (is_bare_repository())
 281                 git_config_set("core.bare", "true");
 282         else {
 283                 const char *work_tree = get_git_work_tree();
 284                 git_config_set("core.bare", "false");
 285                 /* allow template config file to override the default */
 286                 if (log_all_ref_updates == LOG_REFS_UNSET)
 287                         git_config_set("core.logallrefupdates", "true");
 288                 if (needs_work_tree_config(original_git_dir, work_tree))
 289                         git_config_set("core.worktree", work_tree);
 290         }
 291
 292         if (!reinit) {
 293                 /* Check if symlink is supported in the work tree */
 294                 path = git_path_buf(&buf, "tXXXXXX");
 295                 if (!close(xmkstemp(path)) &&
 296                     !unlink(path) &&
 297                     !symlink("testing", path) &&
 298                     !lstat(path, &st1) &&
 299                     S_ISLNK(st1.st_mode))
 300                         unlink(path); /* good */
 301                 else
 302                         git_config_set("core.symlinks", "false");
 303
 304                 /* Check if the filesystem is case-insensitive */
 305                 path = git_path_buf(&buf, "CoNfIg");
 306                 if (!access(path, F_OK))
 307                         git_config_set("core.ignorecase", "true");
 308                 probe_utf8_pathname_composition();
 309         }
 310
 311         strbuf_release(&buf);
 312         return reinit;
 313 }
 314
 315 static void create_object_directory(void)
 316 {
 317         struct strbuf path = STRBUF_INIT;
 318         size_t baselen;
 319
 320         strbuf_addstr(&path, get_object_directory());
 321         baselen = path.len;
 322
 323         safe_create_dir(path.buf, 1);
 324
 325         strbuf_setlen(&path, baselen);
 326         strbuf_addstr(&path, "/pack");
 327         safe_create_dir(path.buf, 1);
 328
 329         strbuf_setlen(&path, baselen);
 330         strbuf_addstr(&path, "/info");
 331         safe_create_dir(path.buf, 1);
 332
 333         strbuf_release(&path);
 334 }
 335
 336 static void separate_git_dir(const char *git_dir, const char *git_link)
 337 {
 338         struct stat st;
 339
 340         if (!stat(git_link, &st)) {
 341                 const char *src;
 342
 343                 if (S_ISREG(st.st_mode))
 344                         src = read_gitfile(git_link);
 345                 else if (S_ISDIR(st.st_mode))
 346                         src = git_link;
 347                 else
 348                         die(_("unable to handle file type %d"), (int)st.st_mode);
 349
 350                 if (rename(src, git_dir))
 351                         die_errno(_("unable to move %s to %s"), src, git_dir);
 352         }
 353
 354         write_file(git_link, "gitdir: %s", git_dir);
 355 }
 356
 357 static void validate_hash_algorithm(struct repository_format *repo_fmt, int hash)
 358 {
 359         /*
 360          * If we already have an initialized repo, don't allow the user to
 361          * specify a different algorithm, as that could cause corruption.
 362          * Otherwise, if the user has specified one on the command line, use it.
 363          */
 364         if (repo_fmt->version >= 0 && hash != GIT_HASH_UNKNOWN && hash != repo_fmt->hash_algo)
 365                 die(_("attempt to reinitialize repository with different hash"));
 366         else if (hash != GIT_HASH_UNKNOWN)
 367                 repo_fmt->hash_algo = hash;
 368 }
 369
 370 int init_db(const char *git_dir, const char *real_git_dir,
 371             const char *template_dir, int hash, unsigned int flags)
 372 {
 373         int reinit;
 374         int exist_ok = flags & INIT_DB_EXIST_OK;
 375         char *original_git_dir = real_pathdup(git_dir, 1);
 376         struct repository_format repo_fmt = REPOSITORY_FORMAT_INIT;
 377
 378         if (real_git_dir) {
 379                 struct stat st;
 380
 381                 if (!exist_ok && !stat(git_dir, &st))
 382                         die(_("%s already exists"), git_dir);
 383
 384                 if (!exist_ok && !stat(real_git_dir, &st))
 385                         die(_("%s already exists"), real_git_dir);
 386
 387                 set_git_dir(real_path(real_git_dir));
 388                 git_dir = get_git_dir();
 389                 separate_git_dir(git_dir, original_git_dir);
 390         }
 391         else {
 392                 set_git_dir(real_path(git_dir));
 393                 git_dir = get_git_dir();
 394         }
 395         startup_info->have_repository = 1;
 396
 397         /* Just look for `core.hidedotfiles` */
 398         git_config(git_init_db_config, NULL);
 399
 400         safe_create_dir(git_dir, 0);
 401
 402         init_is_bare_repository = is_bare_repository();
 403
 404         /* Check to see if the repository version is right.
 405          * Note that a newly created repository does not have
 406          * config file, so this will not fail.  What we are catching
 407          * is an attempt to reinitialize new repository with an old tool.
 408          */
 409         check_repository_format(&repo_fmt);
 410
 411         validate_hash_algorithm(&repo_fmt, hash);
 412
 413         reinit = create_default_files(template_dir, original_git_dir, &repo_fmt);
 414
 415         create_object_directory();
 416
 417         if (get_shared_repository()) {
 418                 char buf[10];
 419                 /* We do not spell "group" and such, so that
 420                  * the configuration can be read by older version
 421                  * of git. Note, we use octal numbers for new share modes,
 422                  * and compatibility values for PERM_GROUP and
 423                  * PERM_EVERYBODY.
 424                  */
 425                 if (get_shared_repository() < 0)
 426                         /* force to the mode value */
 427                         xsnprintf(buf, sizeof(buf), "0%o", -get_shared_repository());
 428                 else if (get_shared_repository() == PERM_GROUP)
 429                         xsnprintf(buf, sizeof(buf), "%d", OLD_PERM_GROUP);
 430                 else if (get_shared_repository() == PERM_EVERYBODY)
 431                         xsnprintf(buf, sizeof(buf), "%d", OLD_PERM_EVERYBODY);
 432                 else
 433                         BUG("invalid value for shared_repository");
 434                 git_config_set("core.sharedrepository", buf);
 435                 git_config_set("receive.denyNonFastforwards", "true");
 436         }
 437
 438         if (!(flags & INIT_DB_QUIET)) {
 439                 int len = strlen(git_dir);
 440
 441                 if (reinit)
 442                         printf(get_shared_repository()
 443                                ? _("Reinitialized existing shared Git repository in %s%s\n")
 444                                : _("Reinitialized existing Git repository in %s%s\n"),
 445                                git_dir, len && git_dir[len-1] != '/' ? "/" : "");
 446                 else
 447                         printf(get_shared_repository()
 448                                ? _("Initialized empty shared Git repository in %s%s\n")
 449                                : _("Initialized empty Git repository in %s%s\n"),
 450                                git_dir, len && git_dir[len-1] != '/' ? "/" : "");
 451         }
 452
 453         free(original_git_dir);
 454         return 0;
 455 }
 456
 457 static int guess_repository_type(const char *git_dir)
 458 {
 459         const char *slash;
 460         char *cwd;
 461         int cwd_is_git_dir;
 462
 463         /*
 464          * "GIT_DIR=. git init" is always bare.
 465          * "GIT_DIR=`pwd` git init" too.
 466          */
 467         if (!strcmp(".", git_dir))
 468                 return 1;
 469         cwd = xgetcwd();
 470         cwd_is_git_dir = !strcmp(git_dir, cwd);
 471         free(cwd);
 472         if (cwd_is_git_dir)
 473                 return 1;
 474         /*
 475          * "GIT_DIR=.git or GIT_DIR=something/.git is usually not.
 476          */
 477         if (!strcmp(git_dir, ".git"))
 478                 return 0;
 479         slash = strrchr(git_dir, '/');
 480         if (slash && !strcmp(slash, "/.git"))
 481                 return 0;
 482
 483         /*
 484          * Otherwise it is often bare.  At this point
 485          * we are just guessing.
 486          */
 487         return 1;
 488 }
 489
 490 static int shared_callback(const struct option *opt, const char *arg, int unset)
 491 {
 492         BUG_ON_OPT_NEG(unset);
 493         *((int *) opt->value) = (arg) ? git_config_perm("arg", arg) : PERM_GROUP;
 494         return 0;
 495 }
 496
 497 static const char *const init_db_usage[] = {
 498         N_("git init [-q | --quiet] [--bare] [--template=<template-directory>] [--shared[=<permissions>]] [<directory>]"),
 499         NULL
 500 };
 501
 502 /*
 503  * If you want to, you can share the DB area with any number of branches.
 504  * That has advantages: you can save space by sharing all the SHA1 objects.
 505  * On the other hand, it might just make lookup slower and messier. You
 506  * be the judge.  The default case is to have one DB per managed directory.
 507  */
 508 int cmd_init_db(int argc, const char **argv, const char *prefix)
 509 {
 510         const char *git_dir;
 511         const char *real_git_dir = NULL;
 512         const char *work_tree;
 513         const char *template_dir = NULL;
 514         unsigned int flags = 0;
 515         const char *object_format = NULL;
 516         int hash_algo = GIT_HASH_UNKNOWN;
 517         const struct option init_db_options[] = {
 518                 OPT_STRING(0, "template", &template_dir, N_("template-directory"),
 519                                 N_("directory from which templates will be used")),
 520                 OPT_SET_INT(0, "bare", &is_bare_repository_cfg,
 521                                 N_("create a bare repository"), 1),
 522                 { OPTION_CALLBACK, 0, "shared", &init_shared_repository,
 523                         N_("permissions"),
 524                         N_("specify that the git repository is to be shared amongst several users"),
 525                         PARSE_OPT_OPTARG | PARSE_OPT_NONEG, shared_callback, 0},
 526                 OPT_BIT('q', "quiet", &flags, N_("be quiet"), INIT_DB_QUIET),
 527                 OPT_STRING(0, "separate-git-dir", &real_git_dir, N_("gitdir"),
 528                            N_("separate git dir from working tree")),
 529                 OPT_STRING(0, "object-format", &object_format, N_("hash"),
 530                            N_("specify the hash algorithm to use")),
 531                 OPT_END()
 532         };
 533
 534         argc = parse_options(argc, argv, prefix, init_db_options, init_db_usage, 0);
 535
 536         if (real_git_dir && !is_absolute_path(real_git_dir))
 537                 real_git_dir = real_pathdup(real_git_dir, 1);
 538
 539         if (template_dir && *template_dir && !is_absolute_path(template_dir))
 540                 template_dir = absolute_pathdup(template_dir);
 541
 542         if (argc == 1) {
 543                 int mkdir_tried = 0;
 544         retry:
 545                 if (chdir(argv[0]) < 0) {
 546                         if (!mkdir_tried) {
 547                                 int saved;
 548                                 /*
 549                                  * At this point we haven't read any configuration,
 550                                  * and we know shared_repository should always be 0;
 551                                  * but just in case we play safe.
 552                                  */
 553                                 saved = get_shared_repository();
 554                                 set_shared_repository(0);
 555                                 switch (safe_create_leading_directories_const(argv[0])) {
 556                                 case SCLD_OK:
 557                                 case SCLD_PERMS:
 558                                         break;
 559                                 case SCLD_EXISTS:
 560                                         errno = EEXIST;
 561                                         /* fallthru */
 562                                 default:
 563                                         die_errno(_("cannot mkdir %s"), argv[0]);
 564                                         break;
 565                                 }
 566                                 set_shared_repository(saved);
 567                                 if (mkdir(argv[0], 0777) < 0)
 568                                         die_errno(_("cannot mkdir %s"), argv[0]);
 569                                 mkdir_tried = 1;
 570                                 goto retry;
 571                         }
 572                         die_errno(_("cannot chdir to %s"), argv[0]);
 573                 }
 574         } else if (0 < argc) {
 575                 usage(init_db_usage[0]);
 576         }
 577         if (is_bare_repository_cfg == 1) {
 578                 char *cwd = xgetcwd();
 579                 setenv(GIT_DIR_ENVIRONMENT, cwd, argc > 0);
 580                 free(cwd);
 581         }
 582
 583         if (object_format) {
 584                 hash_algo = hash_algo_by_name(object_format);
 585                 if (hash_algo == GIT_HASH_UNKNOWN)
 586                         die(_("unknown hash algorithm '%s'"), object_format);
 587         }
 588
 589         if (init_shared_repository != -1)
 590                 set_shared_repository(init_shared_repository);
 591
 592         /*
 593          * GIT_WORK_TREE makes sense only in conjunction with GIT_DIR
 594          * without --bare.  Catch the error early.
 595          */
 596         git_dir = xstrdup_or_null(getenv(GIT_DIR_ENVIRONMENT));
 597         work_tree = xstrdup_or_null(getenv(GIT_WORK_TREE_ENVIRONMENT));
 598         if ((!git_dir || is_bare_repository_cfg == 1) && work_tree)
 599                 die(_("%s (or --work-tree=<directory>) not allowed without "
 600                           "specifying %s (or --git-dir=<directory>)"),
 601                     GIT_WORK_TREE_ENVIRONMENT,
 602                     GIT_DIR_ENVIRONMENT);
 603
 604         /*
 605          * Set up the default .git directory contents
 606          */
 607         if (!git_dir)
 608                 git_dir = DEFAULT_GIT_DIR_ENVIRONMENT;
 609
 610         if (is_bare_repository_cfg < 0)
 611                 is_bare_repository_cfg = guess_repository_type(git_dir);
 612
 613         if (!is_bare_repository_cfg) {
 614                 const char *git_dir_parent = strrchr(git_dir, '/');
 615                 if (git_dir_parent) {
 616                         char *rel = xstrndup(git_dir, git_dir_parent - git_dir);
 617                         git_work_tree_cfg = real_pathdup(rel, 1);
 618                         free(rel);
 619                 }
 620                 if (!git_work_tree_cfg)
 621                         git_work_tree_cfg = xgetcwd();
 622                 if (work_tree)
 623                         set_git_work_tree(work_tree);
 624                 else
 625                         set_git_work_tree(git_work_tree_cfg);
 626                 if (access(get_git_work_tree(), X_OK))
 627                         die_errno (_("Cannot access work tree '%s'"),
 628                                    get_git_work_tree());
 629         }
 630         else {
 631                 if (work_tree)
 632                         set_git_work_tree(work_tree);
 633         }
 634
 635         UNLEAK(real_git_dir);
 636         UNLEAK(git_dir);
 637         UNLEAK(work_tree);
 638
 639         flags |= INIT_DB_EXIST_OK;
 640         return init_db(git_dir, real_git_dir, template_dir, hash_algo, flags);
 641 }