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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 | #include "worktree.h" | |
13 | ||
14 | #ifndef DEFAULT_GIT_TEMPLATE_DIR | |
15 | #define DEFAULT_GIT_TEMPLATE_DIR "/usr/share/git-core/templates" | |
16 | #endif | |
17 | ||
18 | #ifdef NO_TRUSTABLE_FILEMODE | |
19 | #define TEST_FILEMODE 0 | |
20 | #else | |
21 | #define TEST_FILEMODE 1 | |
22 | #endif | |
23 | ||
24 | #define GIT_DEFAULT_HASH_ENVIRONMENT "GIT_DEFAULT_HASH" | |
25 | ||
26 | static int init_is_bare_repository = 0; | |
27 | static int init_shared_repository = -1; | |
28 | static const char *init_db_template_dir; | |
29 | ||
30 | static void copy_templates_1(struct strbuf *path, struct strbuf *template_path, | |
31 | DIR *dir) | |
32 | { | |
33 | size_t path_baselen = path->len; | |
34 | size_t template_baselen = template_path->len; | |
35 | struct dirent *de; | |
36 | ||
37 | /* Note: if ".git/hooks" file exists in the repository being | |
38 | * re-initialized, /etc/core-git/templates/hooks/update would | |
39 | * cause "git init" to fail here. I think this is sane but | |
40 | * it means that the set of templates we ship by default, along | |
41 | * with the way the namespace under .git/ is organized, should | |
42 | * be really carefully chosen. | |
43 | */ | |
44 | safe_create_dir(path->buf, 1); | |
45 | while ((de = readdir(dir)) != NULL) { | |
46 | struct stat st_git, st_template; | |
47 | int exists = 0; | |
48 | ||
49 | strbuf_setlen(path, path_baselen); | |
50 | strbuf_setlen(template_path, template_baselen); | |
51 | ||
52 | if (de->d_name[0] == '.') | |
53 | continue; | |
54 | strbuf_addstr(path, de->d_name); | |
55 | strbuf_addstr(template_path, de->d_name); | |
56 | if (lstat(path->buf, &st_git)) { | |
57 | if (errno != ENOENT) | |
58 | die_errno(_("cannot stat '%s'"), path->buf); | |
59 | } | |
60 | else | |
61 | exists = 1; | |
62 | ||
63 | if (lstat(template_path->buf, &st_template)) | |
64 | die_errno(_("cannot stat template '%s'"), template_path->buf); | |
65 | ||
66 | if (S_ISDIR(st_template.st_mode)) { | |
67 | DIR *subdir = opendir(template_path->buf); | |
68 | if (!subdir) | |
69 | die_errno(_("cannot opendir '%s'"), template_path->buf); | |
70 | strbuf_addch(path, '/'); | |
71 | strbuf_addch(template_path, '/'); | |
72 | copy_templates_1(path, template_path, subdir); | |
73 | closedir(subdir); | |
74 | } | |
75 | else if (exists) | |
76 | continue; | |
77 | else if (S_ISLNK(st_template.st_mode)) { | |
78 | struct strbuf lnk = STRBUF_INIT; | |
79 | if (strbuf_readlink(&lnk, template_path->buf, | |
80 | st_template.st_size) < 0) | |
81 | die_errno(_("cannot readlink '%s'"), template_path->buf); | |
82 | if (symlink(lnk.buf, path->buf)) | |
83 | die_errno(_("cannot symlink '%s' '%s'"), | |
84 | lnk.buf, path->buf); | |
85 | strbuf_release(&lnk); | |
86 | } | |
87 | else if (S_ISREG(st_template.st_mode)) { | |
88 | if (copy_file(path->buf, template_path->buf, st_template.st_mode)) | |
89 | die_errno(_("cannot copy '%s' to '%s'"), | |
90 | template_path->buf, path->buf); | |
91 | } | |
92 | else | |
93 | error(_("ignoring template %s"), template_path->buf); | |
94 | } | |
95 | } | |
96 | ||
97 | static void copy_templates(const char *template_dir) | |
98 | { | |
99 | struct strbuf path = STRBUF_INIT; | |
100 | struct strbuf template_path = STRBUF_INIT; | |
101 | size_t template_len; | |
102 | struct repository_format template_format = REPOSITORY_FORMAT_INIT; | |
103 | struct strbuf err = STRBUF_INIT; | |
104 | DIR *dir; | |
105 | char *to_free = NULL; | |
106 | ||
107 | if (!template_dir) | |
108 | template_dir = getenv(TEMPLATE_DIR_ENVIRONMENT); | |
109 | if (!template_dir) | |
110 | template_dir = init_db_template_dir; | |
111 | if (!template_dir) | |
112 | template_dir = to_free = system_path(DEFAULT_GIT_TEMPLATE_DIR); | |
113 | if (!template_dir[0]) { | |
114 | free(to_free); | |
115 | return; | |
116 | } | |
117 | ||
118 | strbuf_addstr(&template_path, template_dir); | |
119 | strbuf_complete(&template_path, '/'); | |
120 | template_len = template_path.len; | |
121 | ||
122 | dir = opendir(template_path.buf); | |
123 | if (!dir) { | |
124 | warning(_("templates not found in %s"), template_dir); | |
125 | goto free_return; | |
126 | } | |
127 | ||
128 | /* Make sure that template is from the correct vintage */ | |
129 | strbuf_addstr(&template_path, "config"); | |
130 | read_repository_format(&template_format, template_path.buf); | |
131 | strbuf_setlen(&template_path, template_len); | |
132 | ||
133 | /* | |
134 | * No mention of version at all is OK, but anything else should be | |
135 | * verified. | |
136 | */ | |
137 | if (template_format.version >= 0 && | |
138 | verify_repository_format(&template_format, &err) < 0) { | |
139 | warning(_("not copying templates from '%s': %s"), | |
140 | template_dir, err.buf); | |
141 | strbuf_release(&err); | |
142 | goto close_free_return; | |
143 | } | |
144 | ||
145 | strbuf_addstr(&path, get_git_common_dir()); | |
146 | strbuf_complete(&path, '/'); | |
147 | copy_templates_1(&path, &template_path, dir); | |
148 | close_free_return: | |
149 | closedir(dir); | |
150 | free_return: | |
151 | free(to_free); | |
152 | strbuf_release(&path); | |
153 | strbuf_release(&template_path); | |
154 | clear_repository_format(&template_format); | |
155 | } | |
156 | ||
157 | static int git_init_db_config(const char *k, const char *v, void *cb) | |
158 | { | |
159 | if (!strcmp(k, "init.templatedir")) | |
160 | return git_config_pathname(&init_db_template_dir, k, v); | |
161 | ||
162 | if (starts_with(k, "core.")) | |
163 | return platform_core_config(k, v, cb); | |
164 | ||
165 | return 0; | |
166 | } | |
167 | ||
168 | /* | |
169 | * If the git_dir is not directly inside the working tree, then git will not | |
170 | * find it by default, and we need to set the worktree explicitly. | |
171 | */ | |
172 | static int needs_work_tree_config(const char *git_dir, const char *work_tree) | |
173 | { | |
174 | if (!strcmp(work_tree, "/") && !strcmp(git_dir, "/.git")) | |
175 | return 0; | |
176 | if (skip_prefix(git_dir, work_tree, &git_dir) && | |
177 | !strcmp(git_dir, "/.git")) | |
178 | return 0; | |
179 | return 1; | |
180 | } | |
181 | ||
182 | void initialize_repository_version(int hash_algo, int reinit) | |
183 | { | |
184 | char repo_version_string[10]; | |
185 | int repo_version = GIT_REPO_VERSION; | |
186 | ||
187 | if (hash_algo != GIT_HASH_SHA1) | |
188 | repo_version = GIT_REPO_VERSION_READ; | |
189 | ||
190 | /* This forces creation of new config file */ | |
191 | xsnprintf(repo_version_string, sizeof(repo_version_string), | |
192 | "%d", repo_version); | |
193 | git_config_set("core.repositoryformatversion", repo_version_string); | |
194 | ||
195 | if (hash_algo != GIT_HASH_SHA1) | |
196 | git_config_set("extensions.objectformat", | |
197 | hash_algos[hash_algo].name); | |
198 | else if (reinit) | |
199 | git_config_set_gently("extensions.objectformat", NULL); | |
200 | } | |
201 | ||
202 | static int create_default_files(const char *template_path, | |
203 | const char *original_git_dir, | |
204 | const char *initial_branch, | |
205 | const struct repository_format *fmt) | |
206 | { | |
207 | struct stat st1; | |
208 | struct strbuf buf = STRBUF_INIT; | |
209 | char *path; | |
210 | char junk[2]; | |
211 | int reinit; | |
212 | int filemode; | |
213 | struct strbuf err = STRBUF_INIT; | |
214 | ||
215 | /* Just look for `init.templatedir` */ | |
216 | init_db_template_dir = NULL; /* re-set in case it was set before */ | |
217 | git_config(git_init_db_config, NULL); | |
218 | ||
219 | /* | |
220 | * First copy the templates -- we might have the default | |
221 | * config file there, in which case we would want to read | |
222 | * from it after installing. | |
223 | * | |
224 | * Before reading that config, we also need to clear out any cached | |
225 | * values (since we've just potentially changed what's available on | |
226 | * disk). | |
227 | */ | |
228 | copy_templates(template_path); | |
229 | git_config_clear(); | |
230 | reset_shared_repository(); | |
231 | git_config(git_default_config, NULL); | |
232 | ||
233 | /* | |
234 | * We must make sure command-line options continue to override any | |
235 | * values we might have just re-read from the config. | |
236 | */ | |
237 | is_bare_repository_cfg = init_is_bare_repository; | |
238 | if (init_shared_repository != -1) | |
239 | set_shared_repository(init_shared_repository); | |
240 | ||
241 | /* | |
242 | * We would have created the above under user's umask -- under | |
243 | * shared-repository settings, we would need to fix them up. | |
244 | */ | |
245 | if (get_shared_repository()) { | |
246 | adjust_shared_perm(get_git_dir()); | |
247 | } | |
248 | ||
249 | /* | |
250 | * We need to create a "refs" dir in any case so that older | |
251 | * versions of git can tell that this is a repository. | |
252 | */ | |
253 | safe_create_dir(git_path("refs"), 1); | |
254 | adjust_shared_perm(git_path("refs")); | |
255 | ||
256 | if (refs_init_db(&err)) | |
257 | die("failed to set up refs db: %s", err.buf); | |
258 | ||
259 | /* | |
260 | * Point the HEAD symref to the initial branch with if HEAD does | |
261 | * not yet exist. | |
262 | */ | |
263 | path = git_path_buf(&buf, "HEAD"); | |
264 | reinit = (!access(path, R_OK) | |
265 | || readlink(path, junk, sizeof(junk)-1) != -1); | |
266 | if (!reinit) { | |
267 | char *ref; | |
268 | ||
269 | if (!initial_branch) | |
270 | initial_branch = git_default_branch_name(); | |
271 | ||
272 | ref = xstrfmt("refs/heads/%s", initial_branch); | |
273 | if (check_refname_format(ref, 0) < 0) | |
274 | die(_("invalid initial branch name: '%s'"), | |
275 | initial_branch); | |
276 | ||
277 | if (create_symref("HEAD", ref, NULL) < 0) | |
278 | exit(1); | |
279 | free(ref); | |
280 | } | |
281 | ||
282 | initialize_repository_version(fmt->hash_algo, 0); | |
283 | ||
284 | /* Check filemode trustability */ | |
285 | path = git_path_buf(&buf, "config"); | |
286 | filemode = TEST_FILEMODE; | |
287 | if (TEST_FILEMODE && !lstat(path, &st1)) { | |
288 | struct stat st2; | |
289 | filemode = (!chmod(path, st1.st_mode ^ S_IXUSR) && | |
290 | !lstat(path, &st2) && | |
291 | st1.st_mode != st2.st_mode && | |
292 | !chmod(path, st1.st_mode)); | |
293 | if (filemode && !reinit && (st1.st_mode & S_IXUSR)) | |
294 | filemode = 0; | |
295 | } | |
296 | git_config_set("core.filemode", filemode ? "true" : "false"); | |
297 | ||
298 | if (is_bare_repository()) | |
299 | git_config_set("core.bare", "true"); | |
300 | else { | |
301 | const char *work_tree = get_git_work_tree(); | |
302 | git_config_set("core.bare", "false"); | |
303 | /* allow template config file to override the default */ | |
304 | if (log_all_ref_updates == LOG_REFS_UNSET) | |
305 | git_config_set("core.logallrefupdates", "true"); | |
306 | if (needs_work_tree_config(original_git_dir, work_tree)) | |
307 | git_config_set("core.worktree", work_tree); | |
308 | } | |
309 | ||
310 | if (!reinit) { | |
311 | /* Check if symlink is supported in the work tree */ | |
312 | path = git_path_buf(&buf, "tXXXXXX"); | |
313 | if (!close(xmkstemp(path)) && | |
314 | !unlink(path) && | |
315 | !symlink("testing", path) && | |
316 | !lstat(path, &st1) && | |
317 | S_ISLNK(st1.st_mode)) | |
318 | unlink(path); /* good */ | |
319 | else | |
320 | git_config_set("core.symlinks", "false"); | |
321 | ||
322 | /* Check if the filesystem is case-insensitive */ | |
323 | path = git_path_buf(&buf, "CoNfIg"); | |
324 | if (!access(path, F_OK)) | |
325 | git_config_set("core.ignorecase", "true"); | |
326 | probe_utf8_pathname_composition(); | |
327 | } | |
328 | ||
329 | strbuf_release(&buf); | |
330 | return reinit; | |
331 | } | |
332 | ||
333 | static void create_object_directory(void) | |
334 | { | |
335 | struct strbuf path = STRBUF_INIT; | |
336 | size_t baselen; | |
337 | ||
338 | strbuf_addstr(&path, get_object_directory()); | |
339 | baselen = path.len; | |
340 | ||
341 | safe_create_dir(path.buf, 1); | |
342 | ||
343 | strbuf_setlen(&path, baselen); | |
344 | strbuf_addstr(&path, "/pack"); | |
345 | safe_create_dir(path.buf, 1); | |
346 | ||
347 | strbuf_setlen(&path, baselen); | |
348 | strbuf_addstr(&path, "/info"); | |
349 | safe_create_dir(path.buf, 1); | |
350 | ||
351 | strbuf_release(&path); | |
352 | } | |
353 | ||
354 | static void separate_git_dir(const char *git_dir, const char *git_link) | |
355 | { | |
356 | struct stat st; | |
357 | ||
358 | if (!stat(git_link, &st)) { | |
359 | const char *src; | |
360 | ||
361 | if (S_ISREG(st.st_mode)) | |
362 | src = read_gitfile(git_link); | |
363 | else if (S_ISDIR(st.st_mode)) | |
364 | src = git_link; | |
365 | else | |
366 | die(_("unable to handle file type %d"), (int)st.st_mode); | |
367 | ||
368 | if (rename(src, git_dir)) | |
369 | die_errno(_("unable to move %s to %s"), src, git_dir); | |
370 | repair_worktrees(NULL, NULL); | |
371 | } | |
372 | ||
373 | write_file(git_link, "gitdir: %s", git_dir); | |
374 | } | |
375 | ||
376 | static void validate_hash_algorithm(struct repository_format *repo_fmt, int hash) | |
377 | { | |
378 | const char *env = getenv(GIT_DEFAULT_HASH_ENVIRONMENT); | |
379 | /* | |
380 | * If we already have an initialized repo, don't allow the user to | |
381 | * specify a different algorithm, as that could cause corruption. | |
382 | * Otherwise, if the user has specified one on the command line, use it. | |
383 | */ | |
384 | if (repo_fmt->version >= 0 && hash != GIT_HASH_UNKNOWN && hash != repo_fmt->hash_algo) | |
385 | die(_("attempt to reinitialize repository with different hash")); | |
386 | else if (hash != GIT_HASH_UNKNOWN) | |
387 | repo_fmt->hash_algo = hash; | |
388 | else if (env) { | |
389 | int env_algo = hash_algo_by_name(env); | |
390 | if (env_algo == GIT_HASH_UNKNOWN) | |
391 | die(_("unknown hash algorithm '%s'"), env); | |
392 | repo_fmt->hash_algo = env_algo; | |
393 | } | |
394 | } | |
395 | ||
396 | int init_db(const char *git_dir, const char *real_git_dir, | |
397 | const char *template_dir, int hash, const char *initial_branch, | |
398 | unsigned int flags) | |
399 | { | |
400 | int reinit; | |
401 | int exist_ok = flags & INIT_DB_EXIST_OK; | |
402 | char *original_git_dir = real_pathdup(git_dir, 1); | |
403 | struct repository_format repo_fmt = REPOSITORY_FORMAT_INIT; | |
404 | ||
405 | if (real_git_dir) { | |
406 | struct stat st; | |
407 | ||
408 | if (!exist_ok && !stat(git_dir, &st)) | |
409 | die(_("%s already exists"), git_dir); | |
410 | ||
411 | if (!exist_ok && !stat(real_git_dir, &st)) | |
412 | die(_("%s already exists"), real_git_dir); | |
413 | ||
414 | set_git_dir(real_git_dir, 1); | |
415 | git_dir = get_git_dir(); | |
416 | separate_git_dir(git_dir, original_git_dir); | |
417 | } | |
418 | else { | |
419 | set_git_dir(git_dir, 1); | |
420 | git_dir = get_git_dir(); | |
421 | } | |
422 | startup_info->have_repository = 1; | |
423 | ||
424 | /* Just look for `core.hidedotfiles` */ | |
425 | git_config(git_init_db_config, NULL); | |
426 | ||
427 | safe_create_dir(git_dir, 0); | |
428 | ||
429 | init_is_bare_repository = is_bare_repository(); | |
430 | ||
431 | /* Check to see if the repository version is right. | |
432 | * Note that a newly created repository does not have | |
433 | * config file, so this will not fail. What we are catching | |
434 | * is an attempt to reinitialize new repository with an old tool. | |
435 | */ | |
436 | check_repository_format(&repo_fmt); | |
437 | ||
438 | validate_hash_algorithm(&repo_fmt, hash); | |
439 | ||
440 | reinit = create_default_files(template_dir, original_git_dir, | |
441 | initial_branch, &repo_fmt); | |
442 | if (reinit && initial_branch) | |
443 | warning(_("re-init: ignored --initial-branch=%s"), | |
444 | initial_branch); | |
445 | ||
446 | create_object_directory(); | |
447 | ||
448 | if (get_shared_repository()) { | |
449 | char buf[10]; | |
450 | /* We do not spell "group" and such, so that | |
451 | * the configuration can be read by older version | |
452 | * of git. Note, we use octal numbers for new share modes, | |
453 | * and compatibility values for PERM_GROUP and | |
454 | * PERM_EVERYBODY. | |
455 | */ | |
456 | if (get_shared_repository() < 0) | |
457 | /* force to the mode value */ | |
458 | xsnprintf(buf, sizeof(buf), "0%o", -get_shared_repository()); | |
459 | else if (get_shared_repository() == PERM_GROUP) | |
460 | xsnprintf(buf, sizeof(buf), "%d", OLD_PERM_GROUP); | |
461 | else if (get_shared_repository() == PERM_EVERYBODY) | |
462 | xsnprintf(buf, sizeof(buf), "%d", OLD_PERM_EVERYBODY); | |
463 | else | |
464 | BUG("invalid value for shared_repository"); | |
465 | git_config_set("core.sharedrepository", buf); | |
466 | git_config_set("receive.denyNonFastforwards", "true"); | |
467 | } | |
468 | ||
469 | if (!(flags & INIT_DB_QUIET)) { | |
470 | int len = strlen(git_dir); | |
471 | ||
472 | if (reinit) | |
473 | printf(get_shared_repository() | |
474 | ? _("Reinitialized existing shared Git repository in %s%s\n") | |
475 | : _("Reinitialized existing Git repository in %s%s\n"), | |
476 | git_dir, len && git_dir[len-1] != '/' ? "/" : ""); | |
477 | else | |
478 | printf(get_shared_repository() | |
479 | ? _("Initialized empty shared Git repository in %s%s\n") | |
480 | : _("Initialized empty Git repository in %s%s\n"), | |
481 | git_dir, len && git_dir[len-1] != '/' ? "/" : ""); | |
482 | } | |
483 | ||
484 | free(original_git_dir); | |
485 | return 0; | |
486 | } | |
487 | ||
488 | static int guess_repository_type(const char *git_dir) | |
489 | { | |
490 | const char *slash; | |
491 | char *cwd; | |
492 | int cwd_is_git_dir; | |
493 | ||
494 | /* | |
495 | * "GIT_DIR=. git init" is always bare. | |
496 | * "GIT_DIR=`pwd` git init" too. | |
497 | */ | |
498 | if (!strcmp(".", git_dir)) | |
499 | return 1; | |
500 | cwd = xgetcwd(); | |
501 | cwd_is_git_dir = !strcmp(git_dir, cwd); | |
502 | free(cwd); | |
503 | if (cwd_is_git_dir) | |
504 | return 1; | |
505 | /* | |
506 | * "GIT_DIR=.git or GIT_DIR=something/.git is usually not. | |
507 | */ | |
508 | if (!strcmp(git_dir, ".git")) | |
509 | return 0; | |
510 | slash = strrchr(git_dir, '/'); | |
511 | if (slash && !strcmp(slash, "/.git")) | |
512 | return 0; | |
513 | ||
514 | /* | |
515 | * Otherwise it is often bare. At this point | |
516 | * we are just guessing. | |
517 | */ | |
518 | return 1; | |
519 | } | |
520 | ||
521 | static int shared_callback(const struct option *opt, const char *arg, int unset) | |
522 | { | |
523 | BUG_ON_OPT_NEG(unset); | |
524 | *((int *) opt->value) = (arg) ? git_config_perm("arg", arg) : PERM_GROUP; | |
525 | return 0; | |
526 | } | |
527 | ||
528 | static const char *const init_db_usage[] = { | |
529 | N_("git init [-q | --quiet] [--bare] [--template=<template-directory>] [--shared[=<permissions>]] [<directory>]"), | |
530 | NULL | |
531 | }; | |
532 | ||
533 | /* | |
534 | * If you want to, you can share the DB area with any number of branches. | |
535 | * That has advantages: you can save space by sharing all the SHA1 objects. | |
536 | * On the other hand, it might just make lookup slower and messier. You | |
537 | * be the judge. The default case is to have one DB per managed directory. | |
538 | */ | |
539 | int cmd_init_db(int argc, const char **argv, const char *prefix) | |
540 | { | |
541 | const char *git_dir; | |
542 | const char *real_git_dir = NULL; | |
543 | const char *work_tree; | |
544 | const char *template_dir = NULL; | |
545 | unsigned int flags = 0; | |
546 | const char *object_format = NULL; | |
547 | const char *initial_branch = NULL; | |
548 | int hash_algo = GIT_HASH_UNKNOWN; | |
549 | const struct option init_db_options[] = { | |
550 | OPT_STRING(0, "template", &template_dir, N_("template-directory"), | |
551 | N_("directory from which templates will be used")), | |
552 | OPT_SET_INT(0, "bare", &is_bare_repository_cfg, | |
553 | N_("create a bare repository"), 1), | |
554 | { OPTION_CALLBACK, 0, "shared", &init_shared_repository, | |
555 | N_("permissions"), | |
556 | N_("specify that the git repository is to be shared amongst several users"), | |
557 | PARSE_OPT_OPTARG | PARSE_OPT_NONEG, shared_callback, 0}, | |
558 | OPT_BIT('q', "quiet", &flags, N_("be quiet"), INIT_DB_QUIET), | |
559 | OPT_STRING(0, "separate-git-dir", &real_git_dir, N_("gitdir"), | |
560 | N_("separate git dir from working tree")), | |
561 | OPT_STRING('b', "initial-branch", &initial_branch, N_("name"), | |
562 | N_("override the name of the initial branch")), | |
563 | OPT_STRING(0, "object-format", &object_format, N_("hash"), | |
564 | N_("specify the hash algorithm to use")), | |
565 | OPT_END() | |
566 | }; | |
567 | ||
568 | argc = parse_options(argc, argv, prefix, init_db_options, init_db_usage, 0); | |
569 | ||
570 | if (real_git_dir && is_bare_repository_cfg == 1) | |
571 | die(_("--separate-git-dir and --bare are mutually exclusive")); | |
572 | ||
573 | if (real_git_dir && !is_absolute_path(real_git_dir)) | |
574 | real_git_dir = real_pathdup(real_git_dir, 1); | |
575 | ||
576 | if (template_dir && *template_dir && !is_absolute_path(template_dir)) | |
577 | template_dir = absolute_pathdup(template_dir); | |
578 | ||
579 | if (argc == 1) { | |
580 | int mkdir_tried = 0; | |
581 | retry: | |
582 | if (chdir(argv[0]) < 0) { | |
583 | if (!mkdir_tried) { | |
584 | int saved; | |
585 | /* | |
586 | * At this point we haven't read any configuration, | |
587 | * and we know shared_repository should always be 0; | |
588 | * but just in case we play safe. | |
589 | */ | |
590 | saved = get_shared_repository(); | |
591 | set_shared_repository(0); | |
592 | switch (safe_create_leading_directories_const(argv[0])) { | |
593 | case SCLD_OK: | |
594 | case SCLD_PERMS: | |
595 | break; | |
596 | case SCLD_EXISTS: | |
597 | errno = EEXIST; | |
598 | /* fallthru */ | |
599 | default: | |
600 | die_errno(_("cannot mkdir %s"), argv[0]); | |
601 | break; | |
602 | } | |
603 | set_shared_repository(saved); | |
604 | if (mkdir(argv[0], 0777) < 0) | |
605 | die_errno(_("cannot mkdir %s"), argv[0]); | |
606 | mkdir_tried = 1; | |
607 | goto retry; | |
608 | } | |
609 | die_errno(_("cannot chdir to %s"), argv[0]); | |
610 | } | |
611 | } else if (0 < argc) { | |
612 | usage(init_db_usage[0]); | |
613 | } | |
614 | if (is_bare_repository_cfg == 1) { | |
615 | char *cwd = xgetcwd(); | |
616 | setenv(GIT_DIR_ENVIRONMENT, cwd, argc > 0); | |
617 | free(cwd); | |
618 | } | |
619 | ||
620 | if (object_format) { | |
621 | hash_algo = hash_algo_by_name(object_format); | |
622 | if (hash_algo == GIT_HASH_UNKNOWN) | |
623 | die(_("unknown hash algorithm '%s'"), object_format); | |
624 | } | |
625 | ||
626 | if (init_shared_repository != -1) | |
627 | set_shared_repository(init_shared_repository); | |
628 | ||
629 | /* | |
630 | * GIT_WORK_TREE makes sense only in conjunction with GIT_DIR | |
631 | * without --bare. Catch the error early. | |
632 | */ | |
633 | git_dir = xstrdup_or_null(getenv(GIT_DIR_ENVIRONMENT)); | |
634 | work_tree = xstrdup_or_null(getenv(GIT_WORK_TREE_ENVIRONMENT)); | |
635 | if ((!git_dir || is_bare_repository_cfg == 1) && work_tree) | |
636 | die(_("%s (or --work-tree=<directory>) not allowed without " | |
637 | "specifying %s (or --git-dir=<directory>)"), | |
638 | GIT_WORK_TREE_ENVIRONMENT, | |
639 | GIT_DIR_ENVIRONMENT); | |
640 | ||
641 | /* | |
642 | * Set up the default .git directory contents | |
643 | */ | |
644 | if (!git_dir) | |
645 | git_dir = DEFAULT_GIT_DIR_ENVIRONMENT; | |
646 | ||
647 | /* | |
648 | * When --separate-git-dir is used inside a linked worktree, take | |
649 | * care to ensure that the common .git/ directory is relocated, not | |
650 | * the worktree-specific .git/worktrees/<id>/ directory. | |
651 | */ | |
652 | if (real_git_dir) { | |
653 | int err; | |
654 | const char *p; | |
655 | struct strbuf sb = STRBUF_INIT; | |
656 | ||
657 | p = read_gitfile_gently(git_dir, &err); | |
658 | if (p && get_common_dir(&sb, p)) { | |
659 | struct strbuf mainwt = STRBUF_INIT; | |
660 | ||
661 | strbuf_addbuf(&mainwt, &sb); | |
662 | strbuf_strip_suffix(&mainwt, "/.git"); | |
663 | if (chdir(mainwt.buf) < 0) | |
664 | die_errno(_("cannot chdir to %s"), mainwt.buf); | |
665 | strbuf_release(&mainwt); | |
666 | git_dir = strbuf_detach(&sb, NULL); | |
667 | } | |
668 | strbuf_release(&sb); | |
669 | } | |
670 | ||
671 | if (is_bare_repository_cfg < 0) | |
672 | is_bare_repository_cfg = guess_repository_type(git_dir); | |
673 | ||
674 | if (!is_bare_repository_cfg) { | |
675 | const char *git_dir_parent = strrchr(git_dir, '/'); | |
676 | if (git_dir_parent) { | |
677 | char *rel = xstrndup(git_dir, git_dir_parent - git_dir); | |
678 | git_work_tree_cfg = real_pathdup(rel, 1); | |
679 | free(rel); | |
680 | } | |
681 | if (!git_work_tree_cfg) | |
682 | git_work_tree_cfg = xgetcwd(); | |
683 | if (work_tree) | |
684 | set_git_work_tree(work_tree); | |
685 | else | |
686 | set_git_work_tree(git_work_tree_cfg); | |
687 | if (access(get_git_work_tree(), X_OK)) | |
688 | die_errno (_("Cannot access work tree '%s'"), | |
689 | get_git_work_tree()); | |
690 | } | |
691 | else { | |
692 | if (real_git_dir) | |
693 | die(_("--separate-git-dir incompatible with bare repository")); | |
694 | if (work_tree) | |
695 | set_git_work_tree(work_tree); | |
696 | } | |
697 | ||
698 | UNLEAK(real_git_dir); | |
699 | UNLEAK(git_dir); | |
700 | UNLEAK(work_tree); | |
701 | ||
702 | flags |= INIT_DB_EXIST_OK; | |
703 | return init_db(git_dir, real_git_dir, template_dir, hash_algo, | |
704 | initial_branch, flags); | |
705 | } |