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 if (!elt[1]) {
201 /* Just ':' -- no element! */
202 return NULL;
203 } else {
204 /* shorthand */
205 for (copyfrom = elt + 1;
206 *copyfrom && *copyfrom != ':';
207 copyfrom++) {
208 char ch = *copyfrom;
209 if (!is_pathspec_magic(ch))
211 break;
212 for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++)
213 if (pathspec_magic[i].mnemonic == ch) {
214 magic |= pathspec_magic[i].bit;
215 break;
216 }
217 if (ARRAY_SIZE(pathspec_magic) <= i)
218 die("Unimplemented pathspec magic '%c' in '%s'",
219 ch, elt);
220 }
221 if (*copyfrom == ':')
222 copyfrom++;
223 }
224 if (magic & PATHSPEC_FROMTOP)
226 return xstrdup(copyfrom);
227 else
228 return prefix_path(prefix, prefixlen, copyfrom);
229}
230const char **get_pathspec(const char *prefix, const char **pathspec)
232{
233 const char *entry = *pathspec;
234 const char **src, **dst;
235 int prefixlen;
236 if (!prefix && !entry)
238 return NULL;
239 if (!entry) {
241 static const char *spec[2];
242 spec[0] = prefix;
243 spec[1] = NULL;
244 return spec;
245 }
246 /* Otherwise we have to re-write the entries.. */
248 src = pathspec;
249 dst = pathspec;
250 prefixlen = prefix ? strlen(prefix) : 0;
251 while (*src) {
252 *(dst++) = prefix_pathspec(prefix, prefixlen, *src);
253 src++;
254 }
255 *dst = NULL;
256 if (!*pathspec)
257 return NULL;
258 return pathspec;
259}
260/*
262 * Test if it looks like we're at a git directory.
263 * We want to see:
264 *
265 * - either an objects/ directory _or_ the proper
266 * GIT_OBJECT_DIRECTORY environment variable
267 * - a refs/ directory
268 * - either a HEAD symlink or a HEAD file that is formatted as
269 * a proper "ref:", or a regular file HEAD that has a properly
270 * formatted sha1 object name.
271 */
272static int is_git_directory(const char *suspect)
273{
274 char path[PATH_MAX];
275 size_t len = strlen(suspect);
276 if (PATH_MAX <= len + strlen("/objects"))
278 die("Too long path: %.*s", 60, suspect);
279 strcpy(path, suspect);
280 if (getenv(DB_ENVIRONMENT)) {
281 if (access(getenv(DB_ENVIRONMENT), X_OK))
282 return 0;
283 }
284 else {
285 strcpy(path + len, "/objects");
286 if (access(path, X_OK))
287 return 0;
288 }
289 strcpy(path + len, "/refs");
291 if (access(path, X_OK))
292 return 0;
293 strcpy(path + len, "/HEAD");
295 if (validate_headref(path))
296 return 0;
297 return 1;
299}
300int is_inside_git_dir(void)
302{
303 if (inside_git_dir < 0)
304 inside_git_dir = is_inside_dir(get_git_dir());
305 return inside_git_dir;
306}
307int is_inside_work_tree(void)
309{
310 if (inside_work_tree < 0)
311 inside_work_tree = is_inside_dir(get_git_work_tree());
312 return inside_work_tree;
313}
314void setup_work_tree(void)
316{
317 const char *work_tree, *git_dir;
318 static int initialized = 0;
319 if (initialized)
321 return;
322 work_tree = get_git_work_tree();
323 git_dir = get_git_dir();
324 if (!is_absolute_path(git_dir))
325 git_dir = real_path(get_git_dir());
326 if (!work_tree || chdir(work_tree))
327 die("This operation must be run in a work tree");
328 /*
330 * Make sure subsequent git processes find correct worktree
331 * if $GIT_WORK_TREE is set relative
332 */
333 if (getenv(GIT_WORK_TREE_ENVIRONMENT))
334 setenv(GIT_WORK_TREE_ENVIRONMENT, ".", 1);
335 set_git_dir(relative_path(git_dir, work_tree));
337 initialized = 1;
338}
339static int check_repository_format_gently(const char *gitdir, int *nongit_ok)
341{
342 char repo_config[PATH_MAX+1];
343 /*
345 * git_config() can't be used here because it calls git_pathdup()
346 * to get $GIT_CONFIG/config. That call will make setup_git_env()
347 * set git_dir to ".git".
348 *
349 * We are in gitdir setup, no git dir has been found useable yet.
350 * Use a gentler version of git_config() to check if this repo
351 * is a good one.
352 */
353 snprintf(repo_config, PATH_MAX, "%s/config", gitdir);
354 git_config_early(check_repository_format_version, NULL, repo_config);
355 if (GIT_REPO_VERSION < repository_format_version) {
356 if (!nongit_ok)
357 die ("Expected git repo version <= %d, found %d",
358 GIT_REPO_VERSION, repository_format_version);
359 warning("Expected git repo version <= %d, found %d",
360 GIT_REPO_VERSION, repository_format_version);
361 warning("Please upgrade Git");
362 *nongit_ok = -1;
363 return -1;
364 }
365 return 0;
366}
367/*
369 * Try to read the location of the git directory from the .git file,
370 * return path to git directory if found.
371 */
372const char *read_gitfile_gently(const char *path)
373{
374 char *buf;
375 char *dir;
376 const char *slash;
377 struct stat st;
378 int fd;
379 size_t len;
380 if (stat(path, &st))
382 return NULL;
383 if (!S_ISREG(st.st_mode))
384 return NULL;
385 fd = open(path, O_RDONLY);
386 if (fd < 0)
387 die_errno("Error opening '%s'", path);
388 buf = xmalloc(st.st_size + 1);
389 len = read_in_full(fd, buf, st.st_size);
390 close(fd);
391 if (len != st.st_size)
392 die("Error reading %s", path);
393 buf[len] = '\0';
394 if (prefixcmp(buf, "gitdir: "))
395 die("Invalid gitfile format: %s", path);
396 while (buf[len - 1] == '\n' || buf[len - 1] == '\r')
397 len--;
398 if (len < 9)
399 die("No path in gitfile: %s", path);
400 buf[len] = '\0';
401 dir = buf + 8;
402 if (!is_absolute_path(dir) && (slash = strrchr(path, '/'))) {
404 size_t pathlen = slash+1 - path;
405 size_t dirlen = pathlen + len - 8;
406 dir = xmalloc(dirlen + 1);
407 strncpy(dir, path, pathlen);
408 strncpy(dir + pathlen, buf + 8, len - 8);
409 dir[dirlen] = '\0';
410 free(buf);
411 buf = dir;
412 }
413 if (!is_git_directory(dir))
415 die("Not a git repository: %s", dir);
416 path = real_path(dir);
417 free(buf);
419 return path;
420}
421static const char *setup_explicit_git_dir(const char *gitdirenv,
423 char *cwd, int len,
424 int *nongit_ok)
425{
426 const char *work_tree_env = getenv(GIT_WORK_TREE_ENVIRONMENT);
427 const char *worktree;
428 char *gitfile;
429 if (PATH_MAX - 40 < strlen(gitdirenv))
431 die("'$%s' too big", GIT_DIR_ENVIRONMENT);
432 gitfile = (char*)read_gitfile_gently(gitdirenv);
434 if (gitfile) {
435 gitfile = xstrdup(gitfile);
436 gitdirenv = gitfile;
437 }
438 if (!is_git_directory(gitdirenv)) {
440 if (nongit_ok) {
441 *nongit_ok = 1;
442 free(gitfile);
443 return NULL;
444 }
445 die("Not a git repository: '%s'", gitdirenv);
446 }
447 if (check_repository_format_gently(gitdirenv, nongit_ok)) {
449 free(gitfile);
450 return NULL;
451 }
452 /* #3, #7, #11, #15, #19, #23, #27, #31 (see t1510) */
454 if (work_tree_env)
455 set_git_work_tree(work_tree_env);
456 else if (is_bare_repository_cfg > 0) {
457 if (git_work_tree_cfg) /* #22.2, #30 */
458 die("core.bare and core.worktree do not make sense");
459 /* #18, #26 */
461 set_git_dir(gitdirenv);
462 free(gitfile);
463 return NULL;
464 }
465 else if (git_work_tree_cfg) { /* #6, #14 */
466 if (is_absolute_path(git_work_tree_cfg))
467 set_git_work_tree(git_work_tree_cfg);
468 else {
469 char core_worktree[PATH_MAX];
470 if (chdir(gitdirenv))
471 die_errno("Could not chdir to '%s'", gitdirenv);
472 if (chdir(git_work_tree_cfg))
473 die_errno("Could not chdir to '%s'", git_work_tree_cfg);
474 if (!getcwd(core_worktree, PATH_MAX))
475 die_errno("Could not get directory '%s'", git_work_tree_cfg);
476 if (chdir(cwd))
477 die_errno("Could not come back to cwd");
478 set_git_work_tree(core_worktree);
479 }
480 }
481 else /* #2, #10 */
482 set_git_work_tree(".");
483 /* set_git_work_tree() must have been called by now */
485 worktree = get_git_work_tree();
486 /* both get_git_work_tree() and cwd are already normalized */
488 if (!strcmp(cwd, worktree)) { /* cwd == worktree */
489 set_git_dir(gitdirenv);
490 free(gitfile);
491 return NULL;
492 }
493 if (!prefixcmp(cwd, worktree) &&
495 cwd[strlen(worktree)] == '/') { /* cwd inside worktree */
496 set_git_dir(real_path(gitdirenv));
497 if (chdir(worktree))
498 die_errno("Could not chdir to '%s'", worktree);
499 cwd[len++] = '/';
500 cwd[len] = '\0';
501 free(gitfile);
502 return cwd + strlen(worktree) + 1;
503 }
504 /* cwd outside worktree */
506 set_git_dir(gitdirenv);
507 free(gitfile);
508 return NULL;
509}
510static const char *setup_discovered_git_dir(const char *gitdir,
512 char *cwd, int offset, int len,
513 int *nongit_ok)
514{
515 if (check_repository_format_gently(gitdir, nongit_ok))
516 return NULL;
517 /* --work-tree is set without --git-dir; use discovered one */
519 if (getenv(GIT_WORK_TREE_ENVIRONMENT) || git_work_tree_cfg) {
520 if (offset != len && !is_absolute_path(gitdir))
521 gitdir = xstrdup(real_path(gitdir));
522 if (chdir(cwd))
523 die_errno("Could not come back to cwd");
524 return setup_explicit_git_dir(gitdir, cwd, len, nongit_ok);
525 }
526 /* #16.2, #17.2, #20.2, #21.2, #24, #25, #28, #29 (see t1510) */
528 if (is_bare_repository_cfg > 0) {
529 set_git_dir(offset == len ? gitdir : real_path(gitdir));
530 if (chdir(cwd))
531 die_errno("Could not come back to cwd");
532 return NULL;
533 }
534 /* #0, #1, #5, #8, #9, #12, #13 */
536 set_git_work_tree(".");
537 if (strcmp(gitdir, DEFAULT_GIT_DIR_ENVIRONMENT))
538 set_git_dir(gitdir);
539 inside_git_dir = 0;
540 inside_work_tree = 1;
541 if (offset == len)
542 return NULL;
543 /* Make "offset" point to past the '/', and add a '/' at the end */
545 offset++;
546 cwd[len++] = '/';
547 cwd[len] = 0;
548 return cwd + offset;
549}
550/* #16.1, #17.1, #20.1, #21.1, #22.1 (see t1510) */
552static const char *setup_bare_git_dir(char *cwd, int offset, int len, int *nongit_ok)
553{
554 int root_len;
555 if (check_repository_format_gently(".", nongit_ok))
557 return NULL;
558 /* --work-tree is set without --git-dir; use discovered one */
560 if (getenv(GIT_WORK_TREE_ENVIRONMENT) || git_work_tree_cfg) {
561 const char *gitdir;
562 gitdir = offset == len ? "." : xmemdupz(cwd, offset);
564 if (chdir(cwd))
565 die_errno("Could not come back to cwd");
566 return setup_explicit_git_dir(gitdir, cwd, len, nongit_ok);
567 }
568 inside_git_dir = 1;
570 inside_work_tree = 0;
571 if (offset != len) {
572 if (chdir(cwd))
573 die_errno("Cannot come back to cwd");
574 root_len = offset_1st_component(cwd);
575 cwd[offset > root_len ? offset : root_len] = '\0';
576 set_git_dir(cwd);
577 }
578 else
579 set_git_dir(".");
580 return NULL;
581}
582static const char *setup_nongit(const char *cwd, int *nongit_ok)
584{
585 if (!nongit_ok)
586 die("Not a git repository (or any of the parent directories): %s", DEFAULT_GIT_DIR_ENVIRONMENT);
587 if (chdir(cwd))
588 die_errno("Cannot come back to cwd");
589 *nongit_ok = 1;
590 return NULL;
591}
592static dev_t get_device_or_die(const char *path, const char *prefix)
594{
595 struct stat buf;
596 if (stat(path, &buf))
597 die_errno("failed to stat '%s%s%s'",
598 prefix ? prefix : "",
599 prefix ? "/" : "", path);
600 return buf.st_dev;
601}
602/*
604 * We cannot decide in this function whether we are in the work tree or
605 * not, since the config can only be read _after_ this function was called.
606 */
607static const char *setup_git_directory_gently_1(int *nongit_ok)
608{
609 const char *env_ceiling_dirs = getenv(CEILING_DIRECTORIES_ENVIRONMENT);
610 static char cwd[PATH_MAX+1];
611 const char *gitdirenv, *ret;
612 char *gitfile;
613 int len, offset, ceil_offset;
614 dev_t current_device = 0;
615 int one_filesystem = 1;
616 /*
618 * Let's assume that we are in a git repository.
619 * If it turns out later that we are somewhere else, the value will be
620 * updated accordingly.
621 */
622 if (nongit_ok)
623 *nongit_ok = 0;
624 if (!getcwd(cwd, sizeof(cwd)-1))
626 die_errno("Unable to read current working directory");
627 offset = len = strlen(cwd);
628 /*
630 * If GIT_DIR is set explicitly, we're not going
631 * to do any discovery, but we still do repository
632 * validation.
633 */
634 gitdirenv = getenv(GIT_DIR_ENVIRONMENT);
635 if (gitdirenv)
636 return setup_explicit_git_dir(gitdirenv, cwd, len, nongit_ok);
637 ceil_offset = longest_ancestor_length(cwd, env_ceiling_dirs);
639 if (ceil_offset < 0 && has_dos_drive_prefix(cwd))
640 ceil_offset = 1;
641 /*
643 * Test in the following order (relative to the cwd):
644 * - .git (file containing "gitdir: <path>")
645 * - .git/
646 * - ./ (bare)
647 * - ../.git
648 * - ../.git/
649 * - ../ (bare)
650 * - ../../.git/
651 * etc.
652 */
653 one_filesystem = !git_env_bool("GIT_DISCOVERY_ACROSS_FILESYSTEM", 0);
654 if (one_filesystem)
655 current_device = get_device_or_die(".", NULL);
656 for (;;) {
657 gitfile = (char*)read_gitfile_gently(DEFAULT_GIT_DIR_ENVIRONMENT);
658 if (gitfile)
659 gitdirenv = gitfile = xstrdup(gitfile);
660 else {
661 if (is_git_directory(DEFAULT_GIT_DIR_ENVIRONMENT))
662 gitdirenv = DEFAULT_GIT_DIR_ENVIRONMENT;
663 }
664 if (gitdirenv) {
666 ret = setup_discovered_git_dir(gitdirenv,
667 cwd, offset, len,
668 nongit_ok);
669 free(gitfile);
670 return ret;
671 }
672 free(gitfile);
673 if (is_git_directory("."))
675 return setup_bare_git_dir(cwd, offset, len, nongit_ok);
676 while (--offset > ceil_offset && cwd[offset] != '/');
678 if (offset <= ceil_offset)
679 return setup_nongit(cwd, nongit_ok);
680 if (one_filesystem) {
681 dev_t parent_device = get_device_or_die("..", cwd);
682 if (parent_device != current_device) {
683 if (nongit_ok) {
684 if (chdir(cwd))
685 die_errno("Cannot come back to cwd");
686 *nongit_ok = 1;
687 return NULL;
688 }
689 cwd[offset] = '\0';
690 die("Not a git repository (or any parent up to mount parent %s)\n"
691 "Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).", cwd);
692 }
693 }
694 if (chdir("..")) {
695 cwd[offset] = '\0';
696 die_errno("Cannot change to '%s/..'", cwd);
697 }
698 }
699}
700const char *setup_git_directory_gently(int *nongit_ok)
702{
703 const char *prefix;
704 prefix = setup_git_directory_gently_1(nongit_ok);
706 if (startup_info) {
707 startup_info->have_repository = !nongit_ok || !*nongit_ok;
708 startup_info->prefix = prefix;
709 }
710 return prefix;
711}
712int git_config_perm(const char *var, const char *value)
714{
715 int i;
716 char *endptr;
717 if (value == NULL)
719 return PERM_GROUP;
720 if (!strcmp(value, "umask"))
722 return PERM_UMASK;
723 if (!strcmp(value, "group"))
724 return PERM_GROUP;
725 if (!strcmp(value, "all") ||
726 !strcmp(value, "world") ||
727 !strcmp(value, "everybody"))
728 return PERM_EVERYBODY;
729 /* Parse octal numbers */
731 i = strtol(value, &endptr, 8);
732 /* If not an octal number, maybe true/false? */
734 if (*endptr != 0)
735 return git_config_bool(var, value) ? PERM_GROUP : PERM_UMASK;
736 /*
738 * Treat values 0, 1 and 2 as compatibility cases, otherwise it is
739 * a chmod value to restrict to.
740 */
741 switch (i) {
742 case PERM_UMASK: /* 0 */
743 return PERM_UMASK;
744 case OLD_PERM_GROUP: /* 1 */
745 return PERM_GROUP;
746 case OLD_PERM_EVERYBODY: /* 2 */
747 return PERM_EVERYBODY;
748 }
749 /* A filemode value was given: 0xxx */
751 if ((i & 0600) != 0600)
753 die("Problem with core.sharedRepository filemode value "
754 "(0%.3o).\nThe owner of files must always have "
755 "read and write permissions.", i);
756 /*
758 * Mask filemode value. Others can not get write permission.
759 * x flags for directories are handled separately.
760 */
761 return -(i & 0666);
762}
763int check_repository_format_version(const char *var, const char *value, void *cb)
765{
766 if (strcmp(var, "core.repositoryformatversion") == 0)
767 repository_format_version = git_config_int(var, value);
768 else if (strcmp(var, "core.sharedrepository") == 0)
769 shared_repository = git_config_perm(var, value);
770 else if (strcmp(var, "core.bare") == 0) {
771 is_bare_repository_cfg = git_config_bool(var, value);
772 if (is_bare_repository_cfg == 1)
773 inside_work_tree = -1;
774 } else if (strcmp(var, "core.worktree") == 0) {
775 if (!value)
776 return config_error_nonbool(var);
777 free(git_work_tree_cfg);
778 git_work_tree_cfg = xstrdup(value);
779 inside_work_tree = -1;
780 }
781 return 0;
782}
783int check_repository_format(void)
785{
786 return check_repository_format_gently(get_git_dir(), NULL);
787}
788/*
790 * Returns the "prefix", a path to the current working directory
791 * relative to the work tree root, or NULL, if the current working
792 * directory is not a strict subdirectory of the work tree root. The
793 * prefix always ends with a '/' character.
794 */
795const char *setup_git_directory(void)
796{
797 return setup_git_directory_gently(NULL);
798}