820ed05b27292dbb72ccce8cf8a1fb7f6b77a2e5
1#include "cache.h"
2#include "dir.h"
3static int inside_git_dir = -1;
5static int inside_work_tree = -1;
6char *prefix_path(const char *prefix, int len, const char *path)
8{
9 const char *orig = path;
10 char *sanitized;
11 if (is_absolute_path(orig)) {
12 const char *temp = real_path(path);
13 sanitized = xmalloc(len + strlen(temp) + 1);
14 strcpy(sanitized, temp);
15 } else {
16 sanitized = xmalloc(len + strlen(path) + 1);
17 if (len)
18 memcpy(sanitized, prefix, len);
19 strcpy(sanitized + len, path);
20 }
21 if (normalize_path_copy(sanitized, sanitized))
22 goto error_out;
23 if (is_absolute_path(orig)) {
24 size_t root_len, len, total;
25 const char *work_tree = get_git_work_tree();
26 if (!work_tree)
27 goto error_out;
28 len = strlen(work_tree);
29 root_len = offset_1st_component(work_tree);
30 total = strlen(sanitized) + 1;
31 if (strncmp(sanitized, work_tree, len) ||
32 (len > root_len && sanitized[len] != '\0' && sanitized[len] != '/')) {
33 error_out:
34 die("'%s' is outside repository", orig);
35 }
36 if (sanitized[len] == '/')
37 len++;
38 memmove(sanitized, sanitized + len, total - len);
39 }
40 return sanitized;
41}
42/*
44 * Unlike prefix_path, this should be used if the named file does
45 * not have to interact with index entry; i.e. name of a random file
46 * on the filesystem.
47 */
48const char *prefix_filename(const char *pfx, int pfx_len, const char *arg)
49{
50 static char path[PATH_MAX];
51#ifndef WIN32
52 if (!pfx_len || is_absolute_path(arg))
53 return arg;
54 memcpy(path, pfx, pfx_len);
55 strcpy(path + pfx_len, arg);
56#else
57 char *p;
58 /* don't add prefix to absolute paths, but still replace '\' by '/' */
59 if (is_absolute_path(arg))
60 pfx_len = 0;
61 else if (pfx_len)
62 memcpy(path, pfx, pfx_len);
63 strcpy(path + pfx_len, arg);
64 for (p = path + pfx_len; *p; p++)
65 if (*p == '\\')
66 *p = '/';
67#endif
68 return path;
69}
70int check_filename(const char *prefix, const char *arg)
72{
73 const char *name;
74 struct stat st;
75 name = prefix ? prefix_filename(prefix, strlen(prefix), arg) : arg;
77 if (!lstat(name, &st))
78 return 1; /* file exists */
79 if (errno == ENOENT || errno == ENOTDIR)
80 return 0; /* file does not exist */
81 die_errno("failed to stat '%s'", arg);
82}
83static void NORETURN die_verify_filename(const char *prefix, const char *arg)
85{
86 unsigned char sha1[20];
87 unsigned mode;
88 /* try a detailed diagnostic ... */
89 get_sha1_with_mode_1(arg, sha1, &mode, 0, prefix);
90 /* ... or fall back the most general message. */
91 die("ambiguous argument '%s': unknown revision or path not in the working tree.\n"
92 "Use '--' to separate paths from revisions", arg);
93}
95/*
97 * Verify a filename that we got as an argument for a pathspec
98 * entry. Note that a filename that begins with "-" never verifies
99 * as true, because even if such a filename were to exist, we want
100 * it to be preceded by the "--" marker (or we want the user to
101 * use a format like "./-filename")
102 */
103void verify_filename(const char *prefix, const char *arg)
104{
105 if (*arg == '-')
106 die("bad flag '%s' used after filename", arg);
107 if (check_filename(prefix, arg))
108 return;
109 die_verify_filename(prefix, arg);
110}
111/*
113 * Opposite of the above: the command line did not have -- marker
114 * and we parsed the arg as a refname. It should not be interpretable
115 * as a filename.
116 */
117void verify_non_filename(const char *prefix, const char *arg)
118{
119 if (!is_inside_work_tree() || is_inside_git_dir())
120 return;
121 if (*arg == '-')
122 return; /* flag */
123 if (!check_filename(prefix, arg))
124 return;
125 die("ambiguous argument '%s': both revision and filename\n"
126 "Use '--' to separate filenames from revisions", arg);
127}
128/*
130 * Magic pathspec
131 *
132 * NEEDSWORK: These need to be moved to dir.h or even to a new
133 * pathspec.h when we restructure get_pathspec() users to use the
134 * "struct pathspec" interface.
135 *
136 * Possible future magic semantics include stuff like:
137 *
138 * { PATHSPEC_NOGLOB, '!', "noglob" },
139 * { PATHSPEC_ICASE, '\0', "icase" },
140 * { PATHSPEC_RECURSIVE, '*', "recursive" },
141 * { PATHSPEC_REGEXP, '\0', "regexp" },
142 *
143 */
144#define PATHSPEC_FROMTOP (1<<0)
145struct pathspec_magic {
147 unsigned bit;
148 char mnemonic; /* this cannot be ':'! */
149 const char *name;
150} pathspec_magic[] = {
151 { PATHSPEC_FROMTOP, '/', "top" },
152};
153/*
155 * Take an element of a pathspec and check for magic signatures.
156 * Append the result to the prefix.
157 *
158 * For now, we only parse the syntax and throw out anything other than
159 * "top" magic.
160 *
161 * NEEDSWORK: This needs to be rewritten when we start migrating
162 * get_pathspec() users to use the "struct pathspec" interface. For
163 * example, a pathspec element may be marked as case-insensitive, but
164 * the prefix part must always match literally, and a single stupid
165 * string cannot express such a case.
166 */
167const char *prefix_pathspec(const char *prefix, int prefixlen, const char *elt)
168{
169 unsigned magic = 0;
170 const char *copyfrom = elt;
171 int i;
172 if (elt[0] != ':') {
174 ; /* nothing to do */
175 } else if (elt[1] == '(') {
176 /* longhand */
177 const char *nextat;
178 for (copyfrom = elt + 2;
179 *copyfrom && *copyfrom != ')';
180 copyfrom = nextat) {
181 size_t len = strcspn(copyfrom, ",)");
182 if (copyfrom[len] == ')')
183 nextat = copyfrom + len;
184 else
185 nextat = copyfrom + len + 1;
186 if (!len)
187 continue;
188 for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++)
189 if (strlen(pathspec_magic[i].name) == len &&
190 !strncmp(pathspec_magic[i].name, copyfrom, len)) {
191 magic |= pathspec_magic[i].bit;
192 break;
193 }
194 if (ARRAY_SIZE(pathspec_magic) <= i)
195 die("Invalid pathspec magic '%.*s' in '%s'",
196 (int) len, copyfrom, elt);
197 }
198 if (*copyfrom == ')')
199 copyfrom++;
200 } else {
201 /* shorthand */
202 for (copyfrom = elt + 1;
203 *copyfrom && *copyfrom != ':';
204 copyfrom++) {
205 char ch = *copyfrom;
206 for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++)
207 if (pathspec_magic[i].mnemonic == ch) {
208 magic |= pathspec_magic[i].bit;
209 break;
210 }
211 if (ARRAY_SIZE(pathspec_magic) <= i)
212 break;
213 }
214 if (*copyfrom == ':')
215 copyfrom++;
216 }
217 if (magic & PATHSPEC_FROMTOP)
219 return xstrdup(copyfrom);
220 else
221 return prefix_path(prefix, prefixlen, copyfrom);
222}
223const char **get_pathspec(const char *prefix, const char **pathspec)
225{
226 const char *entry = *pathspec;
227 const char **src, **dst;
228 int prefixlen;
229 if (!prefix && !entry)
231 return NULL;
232 if (!entry) {
234 static const char *spec[2];
235 spec[0] = prefix;
236 spec[1] = NULL;
237 return spec;
238 }
239 /* Otherwise we have to re-write the entries.. */
241 src = pathspec;
242 dst = pathspec;
243 prefixlen = prefix ? strlen(prefix) : 0;
244 while (*src) {
245 *(dst++) = prefix_pathspec(prefix, prefixlen, *src);
246 src++;
247 }
248 *dst = NULL;
249 if (!*pathspec)
250 return NULL;
251 return pathspec;
252}
253/*
255 * Test if it looks like we're at a git directory.
256 * We want to see:
257 *
258 * - either an objects/ directory _or_ the proper
259 * GIT_OBJECT_DIRECTORY environment variable
260 * - a refs/ directory
261 * - either a HEAD symlink or a HEAD file that is formatted as
262 * a proper "ref:", or a regular file HEAD that has a properly
263 * formatted sha1 object name.
264 */
265static int is_git_directory(const char *suspect)
266{
267 char path[PATH_MAX];
268 size_t len = strlen(suspect);
269 if (PATH_MAX <= len + strlen("/objects"))
271 die("Too long path: %.*s", 60, suspect);
272 strcpy(path, suspect);
273 if (getenv(DB_ENVIRONMENT)) {
274 if (access(getenv(DB_ENVIRONMENT), X_OK))
275 return 0;
276 }
277 else {
278 strcpy(path + len, "/objects");
279 if (access(path, X_OK))
280 return 0;
281 }
282 strcpy(path + len, "/refs");
284 if (access(path, X_OK))
285 return 0;
286 strcpy(path + len, "/HEAD");
288 if (validate_headref(path))
289 return 0;
290 return 1;
292}
293int is_inside_git_dir(void)
295{
296 if (inside_git_dir < 0)
297 inside_git_dir = is_inside_dir(get_git_dir());
298 return inside_git_dir;
299}
300int is_inside_work_tree(void)
302{
303 if (inside_work_tree < 0)
304 inside_work_tree = is_inside_dir(get_git_work_tree());
305 return inside_work_tree;
306}
307void setup_work_tree(void)
309{
310 const char *work_tree, *git_dir;
311 static int initialized = 0;
312 if (initialized)
314 return;
315 work_tree = get_git_work_tree();
316 git_dir = get_git_dir();
317 if (!is_absolute_path(git_dir))
318 git_dir = real_path(get_git_dir());
319 if (!work_tree || chdir(work_tree))
320 die("This operation must be run in a work tree");
321 /*
323 * Make sure subsequent git processes find correct worktree
324 * if $GIT_WORK_TREE is set relative
325 */
326 if (getenv(GIT_WORK_TREE_ENVIRONMENT))
327 setenv(GIT_WORK_TREE_ENVIRONMENT, ".", 1);
328 set_git_dir(relative_path(git_dir, work_tree));
330 initialized = 1;
331}
332static int check_repository_format_gently(const char *gitdir, int *nongit_ok)
334{
335 char repo_config[PATH_MAX+1];
336 /*
338 * git_config() can't be used here because it calls git_pathdup()
339 * to get $GIT_CONFIG/config. That call will make setup_git_env()
340 * set git_dir to ".git".
341 *
342 * We are in gitdir setup, no git dir has been found useable yet.
343 * Use a gentler version of git_config() to check if this repo
344 * is a good one.
345 */
346 snprintf(repo_config, PATH_MAX, "%s/config", gitdir);
347 git_config_early(check_repository_format_version, NULL, repo_config);
348 if (GIT_REPO_VERSION < repository_format_version) {
349 if (!nongit_ok)
350 die ("Expected git repo version <= %d, found %d",
351 GIT_REPO_VERSION, repository_format_version);
352 warning("Expected git repo version <= %d, found %d",
353 GIT_REPO_VERSION, repository_format_version);
354 warning("Please upgrade Git");
355 *nongit_ok = -1;
356 return -1;
357 }
358 return 0;
359}
360/*
362 * Try to read the location of the git directory from the .git file,
363 * return path to git directory if found.
364 */
365const char *read_gitfile_gently(const char *path)
366{
367 char *buf;
368 char *dir;
369 const char *slash;
370 struct stat st;
371 int fd;
372 size_t len;
373 if (stat(path, &st))
375 return NULL;
376 if (!S_ISREG(st.st_mode))
377 return NULL;
378 fd = open(path, O_RDONLY);
379 if (fd < 0)
380 die_errno("Error opening '%s'", path);
381 buf = xmalloc(st.st_size + 1);
382 len = read_in_full(fd, buf, st.st_size);
383 close(fd);
384 if (len != st.st_size)
385 die("Error reading %s", path);
386 buf[len] = '\0';
387 if (prefixcmp(buf, "gitdir: "))
388 die("Invalid gitfile format: %s", path);
389 while (buf[len - 1] == '\n' || buf[len - 1] == '\r')
390 len--;
391 if (len < 9)
392 die("No path in gitfile: %s", path);
393 buf[len] = '\0';
394 dir = buf + 8;
395 if (!is_absolute_path(dir) && (slash = strrchr(path, '/'))) {
397 size_t pathlen = slash+1 - path;
398 size_t dirlen = pathlen + len - 8;
399 dir = xmalloc(dirlen + 1);
400 strncpy(dir, path, pathlen);
401 strncpy(dir + pathlen, buf + 8, len - 8);
402 dir[dirlen] = '\0';
403 free(buf);
404 buf = dir;
405 }
406 if (!is_git_directory(dir))
408 die("Not a git repository: %s", dir);
409 path = real_path(dir);
410 free(buf);
412 return path;
413}
414static const char *setup_explicit_git_dir(const char *gitdirenv,
416 char *cwd, int len,
417 int *nongit_ok)
418{
419 const char *work_tree_env = getenv(GIT_WORK_TREE_ENVIRONMENT);
420 const char *worktree;
421 char *gitfile;
422 if (PATH_MAX - 40 < strlen(gitdirenv))
424 die("'$%s' too big", GIT_DIR_ENVIRONMENT);
425 gitfile = (char*)read_gitfile_gently(gitdirenv);
427 if (gitfile) {
428 gitfile = xstrdup(gitfile);
429 gitdirenv = gitfile;
430 }
431 if (!is_git_directory(gitdirenv)) {
433 if (nongit_ok) {
434 *nongit_ok = 1;
435 free(gitfile);
436 return NULL;
437 }
438 die("Not a git repository: '%s'", gitdirenv);
439 }
440 if (check_repository_format_gently(gitdirenv, nongit_ok)) {
442 free(gitfile);
443 return NULL;
444 }
445 /* #3, #7, #11, #15, #19, #23, #27, #31 (see t1510) */
447 if (work_tree_env)
448 set_git_work_tree(work_tree_env);
449 else if (is_bare_repository_cfg > 0) {
450 if (git_work_tree_cfg) /* #22.2, #30 */
451 die("core.bare and core.worktree do not make sense");
452 /* #18, #26 */
454 set_git_dir(gitdirenv);
455 free(gitfile);
456 return NULL;
457 }
458 else if (git_work_tree_cfg) { /* #6, #14 */
459 if (is_absolute_path(git_work_tree_cfg))
460 set_git_work_tree(git_work_tree_cfg);
461 else {
462 char core_worktree[PATH_MAX];
463 if (chdir(gitdirenv))
464 die_errno("Could not chdir to '%s'", gitdirenv);
465 if (chdir(git_work_tree_cfg))
466 die_errno("Could not chdir to '%s'", git_work_tree_cfg);
467 if (!getcwd(core_worktree, PATH_MAX))
468 die_errno("Could not get directory '%s'", git_work_tree_cfg);
469 if (chdir(cwd))
470 die_errno("Could not come back to cwd");
471 set_git_work_tree(core_worktree);
472 }
473 }
474 else /* #2, #10 */
475 set_git_work_tree(".");
476 /* set_git_work_tree() must have been called by now */
478 worktree = get_git_work_tree();
479 /* both get_git_work_tree() and cwd are already normalized */
481 if (!strcmp(cwd, worktree)) { /* cwd == worktree */
482 set_git_dir(gitdirenv);
483 free(gitfile);
484 return NULL;
485 }
486 if (!prefixcmp(cwd, worktree) &&
488 cwd[strlen(worktree)] == '/') { /* cwd inside worktree */
489 set_git_dir(real_path(gitdirenv));
490 if (chdir(worktree))
491 die_errno("Could not chdir to '%s'", worktree);
492 cwd[len++] = '/';
493 cwd[len] = '\0';
494 free(gitfile);
495 return cwd + strlen(worktree) + 1;
496 }
497 /* cwd outside worktree */
499 set_git_dir(gitdirenv);
500 free(gitfile);
501 return NULL;
502}
503static const char *setup_discovered_git_dir(const char *gitdir,
505 char *cwd, int offset, int len,
506 int *nongit_ok)
507{
508 if (check_repository_format_gently(gitdir, nongit_ok))
509 return NULL;
510 /* --work-tree is set without --git-dir; use discovered one */
512 if (getenv(GIT_WORK_TREE_ENVIRONMENT) || git_work_tree_cfg) {
513 if (offset != len && !is_absolute_path(gitdir))
514 gitdir = xstrdup(real_path(gitdir));
515 if (chdir(cwd))
516 die_errno("Could not come back to cwd");
517 return setup_explicit_git_dir(gitdir, cwd, len, nongit_ok);
518 }
519 /* #16.2, #17.2, #20.2, #21.2, #24, #25, #28, #29 (see t1510) */
521 if (is_bare_repository_cfg > 0) {
522 set_git_dir(offset == len ? gitdir : real_path(gitdir));
523 if (chdir(cwd))
524 die_errno("Could not come back to cwd");
525 return NULL;
526 }
527 /* #0, #1, #5, #8, #9, #12, #13 */
529 set_git_work_tree(".");
530 if (strcmp(gitdir, DEFAULT_GIT_DIR_ENVIRONMENT))
531 set_git_dir(gitdir);
532 inside_git_dir = 0;
533 inside_work_tree = 1;
534 if (offset == len)
535 return NULL;
536 /* Make "offset" point to past the '/', and add a '/' at the end */
538 offset++;
539 cwd[len++] = '/';
540 cwd[len] = 0;
541 return cwd + offset;
542}
543/* #16.1, #17.1, #20.1, #21.1, #22.1 (see t1510) */
545static const char *setup_bare_git_dir(char *cwd, int offset, int len, int *nongit_ok)
546{
547 int root_len;
548 if (check_repository_format_gently(".", nongit_ok))
550 return NULL;
551 /* --work-tree is set without --git-dir; use discovered one */
553 if (getenv(GIT_WORK_TREE_ENVIRONMENT) || git_work_tree_cfg) {
554 const char *gitdir;
555 gitdir = offset == len ? "." : xmemdupz(cwd, offset);
557 if (chdir(cwd))
558 die_errno("Could not come back to cwd");
559 return setup_explicit_git_dir(gitdir, cwd, len, nongit_ok);
560 }
561 inside_git_dir = 1;
563 inside_work_tree = 0;
564 if (offset != len) {
565 if (chdir(cwd))
566 die_errno("Cannot come back to cwd");
567 root_len = offset_1st_component(cwd);
568 cwd[offset > root_len ? offset : root_len] = '\0';
569 set_git_dir(cwd);
570 }
571 else
572 set_git_dir(".");
573 return NULL;
574}
575static const char *setup_nongit(const char *cwd, int *nongit_ok)
577{
578 if (!nongit_ok)
579 die("Not a git repository (or any of the parent directories): %s", DEFAULT_GIT_DIR_ENVIRONMENT);
580 if (chdir(cwd))
581 die_errno("Cannot come back to cwd");
582 *nongit_ok = 1;
583 return NULL;
584}
585static dev_t get_device_or_die(const char *path, const char *prefix)
587{
588 struct stat buf;
589 if (stat(path, &buf))
590 die_errno("failed to stat '%s%s%s'",
591 prefix ? prefix : "",
592 prefix ? "/" : "", path);
593 return buf.st_dev;
594}
595/*
597 * We cannot decide in this function whether we are in the work tree or
598 * not, since the config can only be read _after_ this function was called.
599 */
600static const char *setup_git_directory_gently_1(int *nongit_ok)
601{
602 const char *env_ceiling_dirs = getenv(CEILING_DIRECTORIES_ENVIRONMENT);
603 static char cwd[PATH_MAX+1];
604 const char *gitdirenv, *ret;
605 char *gitfile;
606 int len, offset, ceil_offset;
607 dev_t current_device = 0;
608 int one_filesystem = 1;
609 /*
611 * Let's assume that we are in a git repository.
612 * If it turns out later that we are somewhere else, the value will be
613 * updated accordingly.
614 */
615 if (nongit_ok)
616 *nongit_ok = 0;
617 if (!getcwd(cwd, sizeof(cwd)-1))
619 die_errno("Unable to read current working directory");
620 offset = len = strlen(cwd);
621 /*
623 * If GIT_DIR is set explicitly, we're not going
624 * to do any discovery, but we still do repository
625 * validation.
626 */
627 gitdirenv = getenv(GIT_DIR_ENVIRONMENT);
628 if (gitdirenv)
629 return setup_explicit_git_dir(gitdirenv, cwd, len, nongit_ok);
630 ceil_offset = longest_ancestor_length(cwd, env_ceiling_dirs);
632 if (ceil_offset < 0 && has_dos_drive_prefix(cwd))
633 ceil_offset = 1;
634 /*
636 * Test in the following order (relative to the cwd):
637 * - .git (file containing "gitdir: <path>")
638 * - .git/
639 * - ./ (bare)
640 * - ../.git
641 * - ../.git/
642 * - ../ (bare)
643 * - ../../.git/
644 * etc.
645 */
646 one_filesystem = !git_env_bool("GIT_DISCOVERY_ACROSS_FILESYSTEM", 0);
647 if (one_filesystem)
648 current_device = get_device_or_die(".", NULL);
649 for (;;) {
650 gitfile = (char*)read_gitfile_gently(DEFAULT_GIT_DIR_ENVIRONMENT);
651 if (gitfile)
652 gitdirenv = gitfile = xstrdup(gitfile);
653 else {
654 if (is_git_directory(DEFAULT_GIT_DIR_ENVIRONMENT))
655 gitdirenv = DEFAULT_GIT_DIR_ENVIRONMENT;
656 }
657 if (gitdirenv) {
659 ret = setup_discovered_git_dir(gitdirenv,
660 cwd, offset, len,
661 nongit_ok);
662 free(gitfile);
663 return ret;
664 }
665 free(gitfile);
666 if (is_git_directory("."))
668 return setup_bare_git_dir(cwd, offset, len, nongit_ok);
669 while (--offset > ceil_offset && cwd[offset] != '/');
671 if (offset <= ceil_offset)
672 return setup_nongit(cwd, nongit_ok);
673 if (one_filesystem) {
674 dev_t parent_device = get_device_or_die("..", cwd);
675 if (parent_device != current_device) {
676 if (nongit_ok) {
677 if (chdir(cwd))
678 die_errno("Cannot come back to cwd");
679 *nongit_ok = 1;
680 return NULL;
681 }
682 cwd[offset] = '\0';
683 die("Not a git repository (or any parent up to mount parent %s)\n"
684 "Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).", cwd);
685 }
686 }
687 if (chdir("..")) {
688 cwd[offset] = '\0';
689 die_errno("Cannot change to '%s/..'", cwd);
690 }
691 }
692}
693const char *setup_git_directory_gently(int *nongit_ok)
695{
696 const char *prefix;
697 prefix = setup_git_directory_gently_1(nongit_ok);
699 if (startup_info) {
700 startup_info->have_repository = !nongit_ok || !*nongit_ok;
701 startup_info->prefix = prefix;
702 }
703 return prefix;
704}
705int git_config_perm(const char *var, const char *value)
707{
708 int i;
709 char *endptr;
710 if (value == NULL)
712 return PERM_GROUP;
713 if (!strcmp(value, "umask"))
715 return PERM_UMASK;
716 if (!strcmp(value, "group"))
717 return PERM_GROUP;
718 if (!strcmp(value, "all") ||
719 !strcmp(value, "world") ||
720 !strcmp(value, "everybody"))
721 return PERM_EVERYBODY;
722 /* Parse octal numbers */
724 i = strtol(value, &endptr, 8);
725 /* If not an octal number, maybe true/false? */
727 if (*endptr != 0)
728 return git_config_bool(var, value) ? PERM_GROUP : PERM_UMASK;
729 /*
731 * Treat values 0, 1 and 2 as compatibility cases, otherwise it is
732 * a chmod value to restrict to.
733 */
734 switch (i) {
735 case PERM_UMASK: /* 0 */
736 return PERM_UMASK;
737 case OLD_PERM_GROUP: /* 1 */
738 return PERM_GROUP;
739 case OLD_PERM_EVERYBODY: /* 2 */
740 return PERM_EVERYBODY;
741 }
742 /* A filemode value was given: 0xxx */
744 if ((i & 0600) != 0600)
746 die("Problem with core.sharedRepository filemode value "
747 "(0%.3o).\nThe owner of files must always have "
748 "read and write permissions.", i);
749 /*
751 * Mask filemode value. Others can not get write permission.
752 * x flags for directories are handled separately.
753 */
754 return -(i & 0666);
755}
756int check_repository_format_version(const char *var, const char *value, void *cb)
758{
759 if (strcmp(var, "core.repositoryformatversion") == 0)
760 repository_format_version = git_config_int(var, value);
761 else if (strcmp(var, "core.sharedrepository") == 0)
762 shared_repository = git_config_perm(var, value);
763 else if (strcmp(var, "core.bare") == 0) {
764 is_bare_repository_cfg = git_config_bool(var, value);
765 if (is_bare_repository_cfg == 1)
766 inside_work_tree = -1;
767 } else if (strcmp(var, "core.worktree") == 0) {
768 if (!value)
769 return config_error_nonbool(var);
770 free(git_work_tree_cfg);
771 git_work_tree_cfg = xstrdup(value);
772 inside_work_tree = -1;
773 }
774 return 0;
775}
776int check_repository_format(void)
778{
779 return check_repository_format_gently(get_git_dir(), NULL);
780}
781/*
783 * Returns the "prefix", a path to the current working directory
784 * relative to the work tree root, or NULL, if the current working
785 * directory is not a strict subdirectory of the work tree root. The
786 * prefix always ends with a '/' character.
787 */
788const char *setup_git_directory(void)
789{
790 return setup_git_directory_gently(NULL);
791}