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 if (!is_pathspec_magic(ch))
208 break;
209 for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++)
210 if (pathspec_magic[i].mnemonic == ch) {
211 magic |= pathspec_magic[i].bit;
212 break;
213 }
214 if (ARRAY_SIZE(pathspec_magic) <= i)
215 die("Unimplemented pathspec magic '%c' in '%s'",
216 ch, elt);
217 }
218 if (*copyfrom == ':')
219 copyfrom++;
220 }
221 if (magic & PATHSPEC_FROMTOP)
223 return xstrdup(copyfrom);
224 else
225 return prefix_path(prefix, prefixlen, copyfrom);
226}
227const char **get_pathspec(const char *prefix, const char **pathspec)
229{
230 const char *entry = *pathspec;
231 const char **src, **dst;
232 int prefixlen;
233 if (!prefix && !entry)
235 return NULL;
236 if (!entry) {
238 static const char *spec[2];
239 spec[0] = prefix;
240 spec[1] = NULL;
241 return spec;
242 }
243 /* Otherwise we have to re-write the entries.. */
245 src = pathspec;
246 dst = pathspec;
247 prefixlen = prefix ? strlen(prefix) : 0;
248 while (*src) {
249 *(dst++) = prefix_pathspec(prefix, prefixlen, *src);
250 src++;
251 }
252 *dst = NULL;
253 if (!*pathspec)
254 return NULL;
255 return pathspec;
256}
257/*
259 * Test if it looks like we're at a git directory.
260 * We want to see:
261 *
262 * - either an objects/ directory _or_ the proper
263 * GIT_OBJECT_DIRECTORY environment variable
264 * - a refs/ directory
265 * - either a HEAD symlink or a HEAD file that is formatted as
266 * a proper "ref:", or a regular file HEAD that has a properly
267 * formatted sha1 object name.
268 */
269static int is_git_directory(const char *suspect)
270{
271 char path[PATH_MAX];
272 size_t len = strlen(suspect);
273 if (PATH_MAX <= len + strlen("/objects"))
275 die("Too long path: %.*s", 60, suspect);
276 strcpy(path, suspect);
277 if (getenv(DB_ENVIRONMENT)) {
278 if (access(getenv(DB_ENVIRONMENT), X_OK))
279 return 0;
280 }
281 else {
282 strcpy(path + len, "/objects");
283 if (access(path, X_OK))
284 return 0;
285 }
286 strcpy(path + len, "/refs");
288 if (access(path, X_OK))
289 return 0;
290 strcpy(path + len, "/HEAD");
292 if (validate_headref(path))
293 return 0;
294 return 1;
296}
297int is_inside_git_dir(void)
299{
300 if (inside_git_dir < 0)
301 inside_git_dir = is_inside_dir(get_git_dir());
302 return inside_git_dir;
303}
304int is_inside_work_tree(void)
306{
307 if (inside_work_tree < 0)
308 inside_work_tree = is_inside_dir(get_git_work_tree());
309 return inside_work_tree;
310}
311void setup_work_tree(void)
313{
314 const char *work_tree, *git_dir;
315 static int initialized = 0;
316 if (initialized)
318 return;
319 work_tree = get_git_work_tree();
320 git_dir = get_git_dir();
321 if (!is_absolute_path(git_dir))
322 git_dir = real_path(get_git_dir());
323 if (!work_tree || chdir(work_tree))
324 die("This operation must be run in a work tree");
325 /*
327 * Make sure subsequent git processes find correct worktree
328 * if $GIT_WORK_TREE is set relative
329 */
330 if (getenv(GIT_WORK_TREE_ENVIRONMENT))
331 setenv(GIT_WORK_TREE_ENVIRONMENT, ".", 1);
332 set_git_dir(relative_path(git_dir, work_tree));
334 initialized = 1;
335}
336static int check_repository_format_gently(const char *gitdir, int *nongit_ok)
338{
339 char repo_config[PATH_MAX+1];
340 /*
342 * git_config() can't be used here because it calls git_pathdup()
343 * to get $GIT_CONFIG/config. That call will make setup_git_env()
344 * set git_dir to ".git".
345 *
346 * We are in gitdir setup, no git dir has been found useable yet.
347 * Use a gentler version of git_config() to check if this repo
348 * is a good one.
349 */
350 snprintf(repo_config, PATH_MAX, "%s/config", gitdir);
351 git_config_early(check_repository_format_version, NULL, repo_config);
352 if (GIT_REPO_VERSION < repository_format_version) {
353 if (!nongit_ok)
354 die ("Expected git repo version <= %d, found %d",
355 GIT_REPO_VERSION, repository_format_version);
356 warning("Expected git repo version <= %d, found %d",
357 GIT_REPO_VERSION, repository_format_version);
358 warning("Please upgrade Git");
359 *nongit_ok = -1;
360 return -1;
361 }
362 return 0;
363}
364/*
366 * Try to read the location of the git directory from the .git file,
367 * return path to git directory if found.
368 */
369const char *read_gitfile_gently(const char *path)
370{
371 char *buf;
372 char *dir;
373 const char *slash;
374 struct stat st;
375 int fd;
376 size_t len;
377 if (stat(path, &st))
379 return NULL;
380 if (!S_ISREG(st.st_mode))
381 return NULL;
382 fd = open(path, O_RDONLY);
383 if (fd < 0)
384 die_errno("Error opening '%s'", path);
385 buf = xmalloc(st.st_size + 1);
386 len = read_in_full(fd, buf, st.st_size);
387 close(fd);
388 if (len != st.st_size)
389 die("Error reading %s", path);
390 buf[len] = '\0';
391 if (prefixcmp(buf, "gitdir: "))
392 die("Invalid gitfile format: %s", path);
393 while (buf[len - 1] == '\n' || buf[len - 1] == '\r')
394 len--;
395 if (len < 9)
396 die("No path in gitfile: %s", path);
397 buf[len] = '\0';
398 dir = buf + 8;
399 if (!is_absolute_path(dir) && (slash = strrchr(path, '/'))) {
401 size_t pathlen = slash+1 - path;
402 size_t dirlen = pathlen + len - 8;
403 dir = xmalloc(dirlen + 1);
404 strncpy(dir, path, pathlen);
405 strncpy(dir + pathlen, buf + 8, len - 8);
406 dir[dirlen] = '\0';
407 free(buf);
408 buf = dir;
409 }
410 if (!is_git_directory(dir))
412 die("Not a git repository: %s", dir);
413 path = real_path(dir);
414 free(buf);
416 return path;
417}
418static const char *setup_explicit_git_dir(const char *gitdirenv,
420 char *cwd, int len,
421 int *nongit_ok)
422{
423 const char *work_tree_env = getenv(GIT_WORK_TREE_ENVIRONMENT);
424 const char *worktree;
425 char *gitfile;
426 if (PATH_MAX - 40 < strlen(gitdirenv))
428 die("'$%s' too big", GIT_DIR_ENVIRONMENT);
429 gitfile = (char*)read_gitfile_gently(gitdirenv);
431 if (gitfile) {
432 gitfile = xstrdup(gitfile);
433 gitdirenv = gitfile;
434 }
435 if (!is_git_directory(gitdirenv)) {
437 if (nongit_ok) {
438 *nongit_ok = 1;
439 free(gitfile);
440 return NULL;
441 }
442 die("Not a git repository: '%s'", gitdirenv);
443 }
444 if (check_repository_format_gently(gitdirenv, nongit_ok)) {
446 free(gitfile);
447 return NULL;
448 }
449 /* #3, #7, #11, #15, #19, #23, #27, #31 (see t1510) */
451 if (work_tree_env)
452 set_git_work_tree(work_tree_env);
453 else if (is_bare_repository_cfg > 0) {
454 if (git_work_tree_cfg) /* #22.2, #30 */
455 die("core.bare and core.worktree do not make sense");
456 /* #18, #26 */
458 set_git_dir(gitdirenv);
459 free(gitfile);
460 return NULL;
461 }
462 else if (git_work_tree_cfg) { /* #6, #14 */
463 if (is_absolute_path(git_work_tree_cfg))
464 set_git_work_tree(git_work_tree_cfg);
465 else {
466 char core_worktree[PATH_MAX];
467 if (chdir(gitdirenv))
468 die_errno("Could not chdir to '%s'", gitdirenv);
469 if (chdir(git_work_tree_cfg))
470 die_errno("Could not chdir to '%s'", git_work_tree_cfg);
471 if (!getcwd(core_worktree, PATH_MAX))
472 die_errno("Could not get directory '%s'", git_work_tree_cfg);
473 if (chdir(cwd))
474 die_errno("Could not come back to cwd");
475 set_git_work_tree(core_worktree);
476 }
477 }
478 else /* #2, #10 */
479 set_git_work_tree(".");
480 /* set_git_work_tree() must have been called by now */
482 worktree = get_git_work_tree();
483 /* both get_git_work_tree() and cwd are already normalized */
485 if (!strcmp(cwd, worktree)) { /* cwd == worktree */
486 set_git_dir(gitdirenv);
487 free(gitfile);
488 return NULL;
489 }
490 if (!prefixcmp(cwd, worktree) &&
492 cwd[strlen(worktree)] == '/') { /* cwd inside worktree */
493 set_git_dir(real_path(gitdirenv));
494 if (chdir(worktree))
495 die_errno("Could not chdir to '%s'", worktree);
496 cwd[len++] = '/';
497 cwd[len] = '\0';
498 free(gitfile);
499 return cwd + strlen(worktree) + 1;
500 }
501 /* cwd outside worktree */
503 set_git_dir(gitdirenv);
504 free(gitfile);
505 return NULL;
506}
507static const char *setup_discovered_git_dir(const char *gitdir,
509 char *cwd, int offset, int len,
510 int *nongit_ok)
511{
512 if (check_repository_format_gently(gitdir, nongit_ok))
513 return NULL;
514 /* --work-tree is set without --git-dir; use discovered one */
516 if (getenv(GIT_WORK_TREE_ENVIRONMENT) || git_work_tree_cfg) {
517 if (offset != len && !is_absolute_path(gitdir))
518 gitdir = xstrdup(real_path(gitdir));
519 if (chdir(cwd))
520 die_errno("Could not come back to cwd");
521 return setup_explicit_git_dir(gitdir, cwd, len, nongit_ok);
522 }
523 /* #16.2, #17.2, #20.2, #21.2, #24, #25, #28, #29 (see t1510) */
525 if (is_bare_repository_cfg > 0) {
526 set_git_dir(offset == len ? gitdir : real_path(gitdir));
527 if (chdir(cwd))
528 die_errno("Could not come back to cwd");
529 return NULL;
530 }
531 /* #0, #1, #5, #8, #9, #12, #13 */
533 set_git_work_tree(".");
534 if (strcmp(gitdir, DEFAULT_GIT_DIR_ENVIRONMENT))
535 set_git_dir(gitdir);
536 inside_git_dir = 0;
537 inside_work_tree = 1;
538 if (offset == len)
539 return NULL;
540 /* Make "offset" point to past the '/', and add a '/' at the end */
542 offset++;
543 cwd[len++] = '/';
544 cwd[len] = 0;
545 return cwd + offset;
546}
547/* #16.1, #17.1, #20.1, #21.1, #22.1 (see t1510) */
549static const char *setup_bare_git_dir(char *cwd, int offset, int len, int *nongit_ok)
550{
551 int root_len;
552 if (check_repository_format_gently(".", nongit_ok))
554 return NULL;
555 /* --work-tree is set without --git-dir; use discovered one */
557 if (getenv(GIT_WORK_TREE_ENVIRONMENT) || git_work_tree_cfg) {
558 const char *gitdir;
559 gitdir = offset == len ? "." : xmemdupz(cwd, offset);
561 if (chdir(cwd))
562 die_errno("Could not come back to cwd");
563 return setup_explicit_git_dir(gitdir, cwd, len, nongit_ok);
564 }
565 inside_git_dir = 1;
567 inside_work_tree = 0;
568 if (offset != len) {
569 if (chdir(cwd))
570 die_errno("Cannot come back to cwd");
571 root_len = offset_1st_component(cwd);
572 cwd[offset > root_len ? offset : root_len] = '\0';
573 set_git_dir(cwd);
574 }
575 else
576 set_git_dir(".");
577 return NULL;
578}
579static const char *setup_nongit(const char *cwd, int *nongit_ok)
581{
582 if (!nongit_ok)
583 die("Not a git repository (or any of the parent directories): %s", DEFAULT_GIT_DIR_ENVIRONMENT);
584 if (chdir(cwd))
585 die_errno("Cannot come back to cwd");
586 *nongit_ok = 1;
587 return NULL;
588}
589static dev_t get_device_or_die(const char *path, const char *prefix)
591{
592 struct stat buf;
593 if (stat(path, &buf))
594 die_errno("failed to stat '%s%s%s'",
595 prefix ? prefix : "",
596 prefix ? "/" : "", path);
597 return buf.st_dev;
598}
599/*
601 * We cannot decide in this function whether we are in the work tree or
602 * not, since the config can only be read _after_ this function was called.
603 */
604static const char *setup_git_directory_gently_1(int *nongit_ok)
605{
606 const char *env_ceiling_dirs = getenv(CEILING_DIRECTORIES_ENVIRONMENT);
607 static char cwd[PATH_MAX+1];
608 const char *gitdirenv, *ret;
609 char *gitfile;
610 int len, offset, ceil_offset;
611 dev_t current_device = 0;
612 int one_filesystem = 1;
613 /*
615 * Let's assume that we are in a git repository.
616 * If it turns out later that we are somewhere else, the value will be
617 * updated accordingly.
618 */
619 if (nongit_ok)
620 *nongit_ok = 0;
621 if (!getcwd(cwd, sizeof(cwd)-1))
623 die_errno("Unable to read current working directory");
624 offset = len = strlen(cwd);
625 /*
627 * If GIT_DIR is set explicitly, we're not going
628 * to do any discovery, but we still do repository
629 * validation.
630 */
631 gitdirenv = getenv(GIT_DIR_ENVIRONMENT);
632 if (gitdirenv)
633 return setup_explicit_git_dir(gitdirenv, cwd, len, nongit_ok);
634 ceil_offset = longest_ancestor_length(cwd, env_ceiling_dirs);
636 if (ceil_offset < 0 && has_dos_drive_prefix(cwd))
637 ceil_offset = 1;
638 /*
640 * Test in the following order (relative to the cwd):
641 * - .git (file containing "gitdir: <path>")
642 * - .git/
643 * - ./ (bare)
644 * - ../.git
645 * - ../.git/
646 * - ../ (bare)
647 * - ../../.git/
648 * etc.
649 */
650 one_filesystem = !git_env_bool("GIT_DISCOVERY_ACROSS_FILESYSTEM", 0);
651 if (one_filesystem)
652 current_device = get_device_or_die(".", NULL);
653 for (;;) {
654 gitfile = (char*)read_gitfile_gently(DEFAULT_GIT_DIR_ENVIRONMENT);
655 if (gitfile)
656 gitdirenv = gitfile = xstrdup(gitfile);
657 else {
658 if (is_git_directory(DEFAULT_GIT_DIR_ENVIRONMENT))
659 gitdirenv = DEFAULT_GIT_DIR_ENVIRONMENT;
660 }
661 if (gitdirenv) {
663 ret = setup_discovered_git_dir(gitdirenv,
664 cwd, offset, len,
665 nongit_ok);
666 free(gitfile);
667 return ret;
668 }
669 free(gitfile);
670 if (is_git_directory("."))
672 return setup_bare_git_dir(cwd, offset, len, nongit_ok);
673 while (--offset > ceil_offset && cwd[offset] != '/');
675 if (offset <= ceil_offset)
676 return setup_nongit(cwd, nongit_ok);
677 if (one_filesystem) {
678 dev_t parent_device = get_device_or_die("..", cwd);
679 if (parent_device != current_device) {
680 if (nongit_ok) {
681 if (chdir(cwd))
682 die_errno("Cannot come back to cwd");
683 *nongit_ok = 1;
684 return NULL;
685 }
686 cwd[offset] = '\0';
687 die("Not a git repository (or any parent up to mount parent %s)\n"
688 "Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).", cwd);
689 }
690 }
691 if (chdir("..")) {
692 cwd[offset] = '\0';
693 die_errno("Cannot change to '%s/..'", cwd);
694 }
695 }
696}
697const char *setup_git_directory_gently(int *nongit_ok)
699{
700 const char *prefix;
701 prefix = setup_git_directory_gently_1(nongit_ok);
703 if (startup_info) {
704 startup_info->have_repository = !nongit_ok || !*nongit_ok;
705 startup_info->prefix = prefix;
706 }
707 return prefix;
708}
709int git_config_perm(const char *var, const char *value)
711{
712 int i;
713 char *endptr;
714 if (value == NULL)
716 return PERM_GROUP;
717 if (!strcmp(value, "umask"))
719 return PERM_UMASK;
720 if (!strcmp(value, "group"))
721 return PERM_GROUP;
722 if (!strcmp(value, "all") ||
723 !strcmp(value, "world") ||
724 !strcmp(value, "everybody"))
725 return PERM_EVERYBODY;
726 /* Parse octal numbers */
728 i = strtol(value, &endptr, 8);
729 /* If not an octal number, maybe true/false? */
731 if (*endptr != 0)
732 return git_config_bool(var, value) ? PERM_GROUP : PERM_UMASK;
733 /*
735 * Treat values 0, 1 and 2 as compatibility cases, otherwise it is
736 * a chmod value to restrict to.
737 */
738 switch (i) {
739 case PERM_UMASK: /* 0 */
740 return PERM_UMASK;
741 case OLD_PERM_GROUP: /* 1 */
742 return PERM_GROUP;
743 case OLD_PERM_EVERYBODY: /* 2 */
744 return PERM_EVERYBODY;
745 }
746 /* A filemode value was given: 0xxx */
748 if ((i & 0600) != 0600)
750 die("Problem with core.sharedRepository filemode value "
751 "(0%.3o).\nThe owner of files must always have "
752 "read and write permissions.", i);
753 /*
755 * Mask filemode value. Others can not get write permission.
756 * x flags for directories are handled separately.
757 */
758 return -(i & 0666);
759}
760int check_repository_format_version(const char *var, const char *value, void *cb)
762{
763 if (strcmp(var, "core.repositoryformatversion") == 0)
764 repository_format_version = git_config_int(var, value);
765 else if (strcmp(var, "core.sharedrepository") == 0)
766 shared_repository = git_config_perm(var, value);
767 else if (strcmp(var, "core.bare") == 0) {
768 is_bare_repository_cfg = git_config_bool(var, value);
769 if (is_bare_repository_cfg == 1)
770 inside_work_tree = -1;
771 } else if (strcmp(var, "core.worktree") == 0) {
772 if (!value)
773 return config_error_nonbool(var);
774 free(git_work_tree_cfg);
775 git_work_tree_cfg = xstrdup(value);
776 inside_work_tree = -1;
777 }
778 return 0;
779}
780int check_repository_format(void)
782{
783 return check_repository_format_gently(get_git_dir(), NULL);
784}
785/*
787 * Returns the "prefix", a path to the current working directory
788 * relative to the work tree root, or NULL, if the current working
789 * directory is not a strict subdirectory of the work tree root. The
790 * prefix always ends with a '/' character.
791 */
792const char *setup_git_directory(void)
793{
794 return setup_git_directory_gently(NULL);
795}