1 #include "cache.h"
2 #include "dir.h"
4 static int inside_git_dir = -1;
5 static int inside_work_tree = -1;
7 char *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 }
43 /*
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 */
48 const 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 }
71 int check_filename(const char *prefix, const char *arg)
72 {
73 const char *name;
74 struct stat st;
76 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 }
84 static void NORETURN die_verify_filename(const char *prefix, const char *arg)
85 {
86 unsigned char sha1[20];
87 unsigned mode;
89 /*
90 * Saying "'(icase)foo' does not exist in the index" when the
91 * user gave us ":(icase)foo" is just stupid. A magic pathspec
92 * begins with a colon and is followed by a non-alnum; do not
93 * let get_sha1_with_mode_1(only_to_die=1) to even trigger.
94 */
95 if (!(arg[0] == ':' && !isalnum(arg[1])))
96 /* try a detailed diagnostic ... */
97 get_sha1_with_mode_1(arg, sha1, &mode, 1, prefix);
99 /* ... or fall back the most general message. */
100 die("ambiguous argument '%s': unknown revision or path not in the working tree.\n"
101 "Use '--' to separate paths from revisions", arg);
103 }
105 /*
106 * Verify a filename that we got as an argument for a pathspec
107 * entry. Note that a filename that begins with "-" never verifies
108 * as true, because even if such a filename were to exist, we want
109 * it to be preceded by the "--" marker (or we want the user to
110 * use a format like "./-filename")
111 */
112 void verify_filename(const char *prefix, const char *arg)
113 {
114 if (*arg == '-')
115 die("bad flag '%s' used after filename", arg);
116 if (check_filename(prefix, arg))
117 return;
118 die_verify_filename(prefix, arg);
119 }
121 /*
122 * Opposite of the above: the command line did not have -- marker
123 * and we parsed the arg as a refname. It should not be interpretable
124 * as a filename.
125 */
126 void verify_non_filename(const char *prefix, const char *arg)
127 {
128 if (!is_inside_work_tree() || is_inside_git_dir())
129 return;
130 if (*arg == '-')
131 return; /* flag */
132 if (!check_filename(prefix, arg))
133 return;
134 die("ambiguous argument '%s': both revision and filename\n"
135 "Use '--' to separate filenames from revisions", arg);
136 }
138 /*
139 * Magic pathspec
140 *
141 * NEEDSWORK: These need to be moved to dir.h or even to a new
142 * pathspec.h when we restructure get_pathspec() users to use the
143 * "struct pathspec" interface.
144 *
145 * Possible future magic semantics include stuff like:
146 *
147 * { PATHSPEC_NOGLOB, '!', "noglob" },
148 * { PATHSPEC_ICASE, '\0', "icase" },
149 * { PATHSPEC_RECURSIVE, '*', "recursive" },
150 * { PATHSPEC_REGEXP, '\0', "regexp" },
151 *
152 */
153 #define PATHSPEC_FROMTOP (1<<0)
155 static struct pathspec_magic {
156 unsigned bit;
157 char mnemonic; /* this cannot be ':'! */
158 const char *name;
159 } pathspec_magic[] = {
160 { PATHSPEC_FROMTOP, '/', "top" },
161 };
163 /*
164 * Take an element of a pathspec and check for magic signatures.
165 * Append the result to the prefix.
166 *
167 * For now, we only parse the syntax and throw out anything other than
168 * "top" magic.
169 *
170 * NEEDSWORK: This needs to be rewritten when we start migrating
171 * get_pathspec() users to use the "struct pathspec" interface. For
172 * example, a pathspec element may be marked as case-insensitive, but
173 * the prefix part must always match literally, and a single stupid
174 * string cannot express such a case.
175 */
176 static const char *prefix_pathspec(const char *prefix, int prefixlen, const char *elt)
177 {
178 unsigned magic = 0;
179 const char *copyfrom = elt;
180 int i;
182 if (elt[0] != ':') {
183 ; /* nothing to do */
184 } else if (elt[1] == '(') {
185 /* longhand */
186 const char *nextat;
187 for (copyfrom = elt + 2;
188 *copyfrom && *copyfrom != ')';
189 copyfrom = nextat) {
190 size_t len = strcspn(copyfrom, ",)");
191 if (copyfrom[len] == ')')
192 nextat = copyfrom + len;
193 else
194 nextat = copyfrom + len + 1;
195 if (!len)
196 continue;
197 for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++)
198 if (strlen(pathspec_magic[i].name) == len &&
199 !strncmp(pathspec_magic[i].name, copyfrom, len)) {
200 magic |= pathspec_magic[i].bit;
201 break;
202 }
203 if (ARRAY_SIZE(pathspec_magic) <= i)
204 die("Invalid pathspec magic '%.*s' in '%s'",
205 (int) len, copyfrom, elt);
206 }
207 if (*copyfrom == ')')
208 copyfrom++;
209 } else {
210 /* shorthand */
211 for (copyfrom = elt + 1;
212 *copyfrom && *copyfrom != ':';
213 copyfrom++) {
214 char ch = *copyfrom;
216 if (!is_pathspec_magic(ch))
217 break;
218 for (i = 0; i < ARRAY_SIZE(pathspec_magic); i++)
219 if (pathspec_magic[i].mnemonic == ch) {
220 magic |= pathspec_magic[i].bit;
221 break;
222 }
223 if (ARRAY_SIZE(pathspec_magic) <= i)
224 die("Unimplemented pathspec magic '%c' in '%s'",
225 ch, elt);
226 }
227 if (*copyfrom == ':')
228 copyfrom++;
229 }
231 if (magic & PATHSPEC_FROMTOP)
232 return xstrdup(copyfrom);
233 else
234 return prefix_path(prefix, prefixlen, copyfrom);
235 }
237 const char **get_pathspec(const char *prefix, const char **pathspec)
238 {
239 const char *entry = *pathspec;
240 const char **src, **dst;
241 int prefixlen;
243 if (!prefix && !entry)
244 return NULL;
246 if (!entry) {
247 static const char *spec[2];
248 spec[0] = prefix;
249 spec[1] = NULL;
250 return spec;
251 }
253 /* Otherwise we have to re-write the entries.. */
254 src = pathspec;
255 dst = pathspec;
256 prefixlen = prefix ? strlen(prefix) : 0;
257 while (*src) {
258 *(dst++) = prefix_pathspec(prefix, prefixlen, *src);
259 src++;
260 }
261 *dst = NULL;
262 if (!*pathspec)
263 return NULL;
264 return pathspec;
265 }
267 char *pathspec_prefix(const char **pathspec)
268 {
269 size_t len = common_prefix_len(pathspec);
271 return len ? xmemdupz(*pathspec, len) : NULL;
272 }
274 /*
275 * Test if it looks like we're at a git directory.
276 * We want to see:
277 *
278 * - either an objects/ directory _or_ the proper
279 * GIT_OBJECT_DIRECTORY environment variable
280 * - a refs/ directory
281 * - either a HEAD symlink or a HEAD file that is formatted as
282 * a proper "ref:", or a regular file HEAD that has a properly
283 * formatted sha1 object name.
284 */
285 static int is_git_directory(const char *suspect)
286 {
287 char path[PATH_MAX];
288 size_t len = strlen(suspect);
290 if (PATH_MAX <= len + strlen("/objects"))
291 die("Too long path: %.*s", 60, suspect);
292 strcpy(path, suspect);
293 if (getenv(DB_ENVIRONMENT)) {
294 if (access(getenv(DB_ENVIRONMENT), X_OK))
295 return 0;
296 }
297 else {
298 strcpy(path + len, "/objects");
299 if (access(path, X_OK))
300 return 0;
301 }
303 strcpy(path + len, "/refs");
304 if (access(path, X_OK))
305 return 0;
307 strcpy(path + len, "/HEAD");
308 if (validate_headref(path))
309 return 0;
311 return 1;
312 }
314 int is_inside_git_dir(void)
315 {
316 if (inside_git_dir < 0)
317 inside_git_dir = is_inside_dir(get_git_dir());
318 return inside_git_dir;
319 }
321 int is_inside_work_tree(void)
322 {
323 if (inside_work_tree < 0)
324 inside_work_tree = is_inside_dir(get_git_work_tree());
325 return inside_work_tree;
326 }
328 void setup_work_tree(void)
329 {
330 const char *work_tree, *git_dir;
331 static int initialized = 0;
333 if (initialized)
334 return;
335 work_tree = get_git_work_tree();
336 git_dir = get_git_dir();
337 if (!is_absolute_path(git_dir))
338 git_dir = real_path(get_git_dir());
339 if (!work_tree || chdir(work_tree))
340 die("This operation must be run in a work tree");
342 /*
343 * Make sure subsequent git processes find correct worktree
344 * if $GIT_WORK_TREE is set relative
345 */
346 if (getenv(GIT_WORK_TREE_ENVIRONMENT))
347 setenv(GIT_WORK_TREE_ENVIRONMENT, ".", 1);
349 set_git_dir(relative_path(git_dir, work_tree));
350 initialized = 1;
351 }
353 static int check_repository_format_gently(const char *gitdir, int *nongit_ok)
354 {
355 char repo_config[PATH_MAX+1];
357 /*
358 * git_config() can't be used here because it calls git_pathdup()
359 * to get $GIT_CONFIG/config. That call will make setup_git_env()
360 * set git_dir to ".git".
361 *
362 * We are in gitdir setup, no git dir has been found useable yet.
363 * Use a gentler version of git_config() to check if this repo
364 * is a good one.
365 */
366 snprintf(repo_config, PATH_MAX, "%s/config", gitdir);
367 git_config_early(check_repository_format_version, NULL, repo_config);
368 if (GIT_REPO_VERSION < repository_format_version) {
369 if (!nongit_ok)
370 die ("Expected git repo version <= %d, found %d",
371 GIT_REPO_VERSION, repository_format_version);
372 warning("Expected git repo version <= %d, found %d",
373 GIT_REPO_VERSION, repository_format_version);
374 warning("Please upgrade Git");
375 *nongit_ok = -1;
376 return -1;
377 }
378 return 0;
379 }
381 /*
382 * Try to read the location of the git directory from the .git file,
383 * return path to git directory if found.
384 */
385 const char *read_gitfile_gently(const char *path)
386 {
387 char *buf;
388 char *dir;
389 const char *slash;
390 struct stat st;
391 int fd;
392 ssize_t len;
394 if (stat(path, &st))
395 return NULL;
396 if (!S_ISREG(st.st_mode))
397 return NULL;
398 fd = open(path, O_RDONLY);
399 if (fd < 0)
400 die_errno("Error opening '%s'", path);
401 buf = xmalloc(st.st_size + 1);
402 len = read_in_full(fd, buf, st.st_size);
403 close(fd);
404 if (len != st.st_size)
405 die("Error reading %s", path);
406 buf[len] = '\0';
407 if (prefixcmp(buf, "gitdir: "))
408 die("Invalid gitfile format: %s", path);
409 while (buf[len - 1] == '\n' || buf[len - 1] == '\r')
410 len--;
411 if (len < 9)
412 die("No path in gitfile: %s", path);
413 buf[len] = '\0';
414 dir = buf + 8;
416 if (!is_absolute_path(dir) && (slash = strrchr(path, '/'))) {
417 size_t pathlen = slash+1 - path;
418 size_t dirlen = pathlen + len - 8;
419 dir = xmalloc(dirlen + 1);
420 strncpy(dir, path, pathlen);
421 strncpy(dir + pathlen, buf + 8, len - 8);
422 dir[dirlen] = '\0';
423 free(buf);
424 buf = dir;
425 }
427 if (!is_git_directory(dir))
428 die("Not a git repository: %s", dir);
429 path = real_path(dir);
431 free(buf);
432 return path;
433 }
435 static const char *setup_explicit_git_dir(const char *gitdirenv,
436 char *cwd, int len,
437 int *nongit_ok)
438 {
439 const char *work_tree_env = getenv(GIT_WORK_TREE_ENVIRONMENT);
440 const char *worktree;
441 char *gitfile;
442 int offset;
444 if (PATH_MAX - 40 < strlen(gitdirenv))
445 die("'$%s' too big", GIT_DIR_ENVIRONMENT);
447 gitfile = (char*)read_gitfile_gently(gitdirenv);
448 if (gitfile) {
449 gitfile = xstrdup(gitfile);
450 gitdirenv = gitfile;
451 }
453 if (!is_git_directory(gitdirenv)) {
454 if (nongit_ok) {
455 *nongit_ok = 1;
456 free(gitfile);
457 return NULL;
458 }
459 die("Not a git repository: '%s'", gitdirenv);
460 }
462 if (check_repository_format_gently(gitdirenv, nongit_ok)) {
463 free(gitfile);
464 return NULL;
465 }
467 /* #3, #7, #11, #15, #19, #23, #27, #31 (see t1510) */
468 if (work_tree_env)
469 set_git_work_tree(work_tree_env);
470 else if (is_bare_repository_cfg > 0) {
471 if (git_work_tree_cfg) /* #22.2, #30 */
472 die("core.bare and core.worktree do not make sense");
474 /* #18, #26 */
475 set_git_dir(gitdirenv);
476 free(gitfile);
477 return NULL;
478 }
479 else if (git_work_tree_cfg) { /* #6, #14 */
480 if (is_absolute_path(git_work_tree_cfg))
481 set_git_work_tree(git_work_tree_cfg);
482 else {
483 char core_worktree[PATH_MAX];
484 if (chdir(gitdirenv))
485 die_errno("Could not chdir to '%s'", gitdirenv);
486 if (chdir(git_work_tree_cfg))
487 die_errno("Could not chdir to '%s'", git_work_tree_cfg);
488 if (!getcwd(core_worktree, PATH_MAX))
489 die_errno("Could not get directory '%s'", git_work_tree_cfg);
490 if (chdir(cwd))
491 die_errno("Could not come back to cwd");
492 set_git_work_tree(core_worktree);
493 }
494 }
495 else /* #2, #10 */
496 set_git_work_tree(".");
498 /* set_git_work_tree() must have been called by now */
499 worktree = get_git_work_tree();
501 /* both get_git_work_tree() and cwd are already normalized */
502 if (!strcmp(cwd, worktree)) { /* cwd == worktree */
503 set_git_dir(gitdirenv);
504 free(gitfile);
505 return NULL;
506 }
508 offset = dir_inside_of(cwd, worktree);
509 if (offset >= 0) { /* cwd inside worktree? */
510 set_git_dir(real_path(gitdirenv));
511 if (chdir(worktree))
512 die_errno("Could not chdir to '%s'", worktree);
513 cwd[len++] = '/';
514 cwd[len] = '\0';
515 free(gitfile);
516 return cwd + offset;
517 }
519 /* cwd outside worktree */
520 set_git_dir(gitdirenv);
521 free(gitfile);
522 return NULL;
523 }
525 static const char *setup_discovered_git_dir(const char *gitdir,
526 char *cwd, int offset, int len,
527 int *nongit_ok)
528 {
529 if (check_repository_format_gently(gitdir, nongit_ok))
530 return NULL;
532 /* --work-tree is set without --git-dir; use discovered one */
533 if (getenv(GIT_WORK_TREE_ENVIRONMENT) || git_work_tree_cfg) {
534 if (offset != len && !is_absolute_path(gitdir))
535 gitdir = xstrdup(real_path(gitdir));
536 if (chdir(cwd))
537 die_errno("Could not come back to cwd");
538 return setup_explicit_git_dir(gitdir, cwd, len, nongit_ok);
539 }
541 /* #16.2, #17.2, #20.2, #21.2, #24, #25, #28, #29 (see t1510) */
542 if (is_bare_repository_cfg > 0) {
543 set_git_dir(offset == len ? gitdir : real_path(gitdir));
544 if (chdir(cwd))
545 die_errno("Could not come back to cwd");
546 return NULL;
547 }
549 /* #0, #1, #5, #8, #9, #12, #13 */
550 set_git_work_tree(".");
551 if (strcmp(gitdir, DEFAULT_GIT_DIR_ENVIRONMENT))
552 set_git_dir(gitdir);
553 inside_git_dir = 0;
554 inside_work_tree = 1;
555 if (offset == len)
556 return NULL;
558 /* Make "offset" point to past the '/', and add a '/' at the end */
559 offset++;
560 cwd[len++] = '/';
561 cwd[len] = 0;
562 return cwd + offset;
563 }
565 /* #16.1, #17.1, #20.1, #21.1, #22.1 (see t1510) */
566 static const char *setup_bare_git_dir(char *cwd, int offset, int len, int *nongit_ok)
567 {
568 int root_len;
570 if (check_repository_format_gently(".", nongit_ok))
571 return NULL;
573 /* --work-tree is set without --git-dir; use discovered one */
574 if (getenv(GIT_WORK_TREE_ENVIRONMENT) || git_work_tree_cfg) {
575 const char *gitdir;
577 gitdir = offset == len ? "." : xmemdupz(cwd, offset);
578 if (chdir(cwd))
579 die_errno("Could not come back to cwd");
580 return setup_explicit_git_dir(gitdir, cwd, len, nongit_ok);
581 }
583 inside_git_dir = 1;
584 inside_work_tree = 0;
585 if (offset != len) {
586 if (chdir(cwd))
587 die_errno("Cannot come back to cwd");
588 root_len = offset_1st_component(cwd);
589 cwd[offset > root_len ? offset : root_len] = '\0';
590 set_git_dir(cwd);
591 }
592 else
593 set_git_dir(".");
594 return NULL;
595 }
597 static const char *setup_nongit(const char *cwd, int *nongit_ok)
598 {
599 if (!nongit_ok)
600 die("Not a git repository (or any of the parent directories): %s", DEFAULT_GIT_DIR_ENVIRONMENT);
601 if (chdir(cwd))
602 die_errno("Cannot come back to cwd");
603 *nongit_ok = 1;
604 return NULL;
605 }
607 static dev_t get_device_or_die(const char *path, const char *prefix)
608 {
609 struct stat buf;
610 if (stat(path, &buf))
611 die_errno("failed to stat '%s%s%s'",
612 prefix ? prefix : "",
613 prefix ? "/" : "", path);
614 return buf.st_dev;
615 }
617 /*
618 * We cannot decide in this function whether we are in the work tree or
619 * not, since the config can only be read _after_ this function was called.
620 */
621 static const char *setup_git_directory_gently_1(int *nongit_ok)
622 {
623 const char *env_ceiling_dirs = getenv(CEILING_DIRECTORIES_ENVIRONMENT);
624 static char cwd[PATH_MAX+1];
625 const char *gitdirenv, *ret;
626 char *gitfile;
627 int len, offset, ceil_offset;
628 dev_t current_device = 0;
629 int one_filesystem = 1;
631 /*
632 * Let's assume that we are in a git repository.
633 * If it turns out later that we are somewhere else, the value will be
634 * updated accordingly.
635 */
636 if (nongit_ok)
637 *nongit_ok = 0;
639 if (!getcwd(cwd, sizeof(cwd)-1))
640 die_errno("Unable to read current working directory");
641 offset = len = strlen(cwd);
643 /*
644 * If GIT_DIR is set explicitly, we're not going
645 * to do any discovery, but we still do repository
646 * validation.
647 */
648 gitdirenv = getenv(GIT_DIR_ENVIRONMENT);
649 if (gitdirenv)
650 return setup_explicit_git_dir(gitdirenv, cwd, len, nongit_ok);
652 ceil_offset = longest_ancestor_length(cwd, env_ceiling_dirs);
653 if (ceil_offset < 0 && has_dos_drive_prefix(cwd))
654 ceil_offset = 1;
656 /*
657 * Test in the following order (relative to the cwd):
658 * - .git (file containing "gitdir: <path>")
659 * - .git/
660 * - ./ (bare)
661 * - ../.git
662 * - ../.git/
663 * - ../ (bare)
664 * - ../../.git/
665 * etc.
666 */
667 one_filesystem = !git_env_bool("GIT_DISCOVERY_ACROSS_FILESYSTEM", 0);
668 if (one_filesystem)
669 current_device = get_device_or_die(".", NULL);
670 for (;;) {
671 gitfile = (char*)read_gitfile_gently(DEFAULT_GIT_DIR_ENVIRONMENT);
672 if (gitfile)
673 gitdirenv = gitfile = xstrdup(gitfile);
674 else {
675 if (is_git_directory(DEFAULT_GIT_DIR_ENVIRONMENT))
676 gitdirenv = DEFAULT_GIT_DIR_ENVIRONMENT;
677 }
679 if (gitdirenv) {
680 ret = setup_discovered_git_dir(gitdirenv,
681 cwd, offset, len,
682 nongit_ok);
683 free(gitfile);
684 return ret;
685 }
686 free(gitfile);
688 if (is_git_directory("."))
689 return setup_bare_git_dir(cwd, offset, len, nongit_ok);
691 while (--offset > ceil_offset && cwd[offset] != '/');
692 if (offset <= ceil_offset)
693 return setup_nongit(cwd, nongit_ok);
694 if (one_filesystem) {
695 dev_t parent_device = get_device_or_die("..", cwd);
696 if (parent_device != current_device) {
697 if (nongit_ok) {
698 if (chdir(cwd))
699 die_errno("Cannot come back to cwd");
700 *nongit_ok = 1;
701 return NULL;
702 }
703 cwd[offset] = '\0';
704 die("Not a git repository (or any parent up to mount parent %s)\n"
705 "Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).", cwd);
706 }
707 }
708 if (chdir("..")) {
709 cwd[offset] = '\0';
710 die_errno("Cannot change to '%s/..'", cwd);
711 }
712 }
713 }
715 const char *setup_git_directory_gently(int *nongit_ok)
716 {
717 const char *prefix;
719 prefix = setup_git_directory_gently_1(nongit_ok);
720 if (startup_info) {
721 startup_info->have_repository = !nongit_ok || !*nongit_ok;
722 startup_info->prefix = prefix;
723 }
724 return prefix;
725 }
727 int git_config_perm(const char *var, const char *value)
728 {
729 int i;
730 char *endptr;
732 if (value == NULL)
733 return PERM_GROUP;
735 if (!strcmp(value, "umask"))
736 return PERM_UMASK;
737 if (!strcmp(value, "group"))
738 return PERM_GROUP;
739 if (!strcmp(value, "all") ||
740 !strcmp(value, "world") ||
741 !strcmp(value, "everybody"))
742 return PERM_EVERYBODY;
744 /* Parse octal numbers */
745 i = strtol(value, &endptr, 8);
747 /* If not an octal number, maybe true/false? */
748 if (*endptr != 0)
749 return git_config_bool(var, value) ? PERM_GROUP : PERM_UMASK;
751 /*
752 * Treat values 0, 1 and 2 as compatibility cases, otherwise it is
753 * a chmod value to restrict to.
754 */
755 switch (i) {
756 case PERM_UMASK: /* 0 */
757 return PERM_UMASK;
758 case OLD_PERM_GROUP: /* 1 */
759 return PERM_GROUP;
760 case OLD_PERM_EVERYBODY: /* 2 */
761 return PERM_EVERYBODY;
762 }
764 /* A filemode value was given: 0xxx */
766 if ((i & 0600) != 0600)
767 die("Problem with core.sharedRepository filemode value "
768 "(0%.3o).\nThe owner of files must always have "
769 "read and write permissions.", i);
771 /*
772 * Mask filemode value. Others can not get write permission.
773 * x flags for directories are handled separately.
774 */
775 return -(i & 0666);
776 }
778 int check_repository_format_version(const char *var, const char *value, void *cb)
779 {
780 if (strcmp(var, "core.repositoryformatversion") == 0)
781 repository_format_version = git_config_int(var, value);
782 else if (strcmp(var, "core.sharedrepository") == 0)
783 shared_repository = git_config_perm(var, value);
784 else if (strcmp(var, "core.bare") == 0) {
785 is_bare_repository_cfg = git_config_bool(var, value);
786 if (is_bare_repository_cfg == 1)
787 inside_work_tree = -1;
788 } else if (strcmp(var, "core.worktree") == 0) {
789 if (!value)
790 return config_error_nonbool(var);
791 free(git_work_tree_cfg);
792 git_work_tree_cfg = xstrdup(value);
793 inside_work_tree = -1;
794 }
795 return 0;
796 }
798 int check_repository_format(void)
799 {
800 return check_repository_format_gently(get_git_dir(), NULL);
801 }
803 /*
804 * Returns the "prefix", a path to the current working directory
805 * relative to the work tree root, or NULL, if the current working
806 * directory is not a strict subdirectory of the work tree root. The
807 * prefix always ends with a '/' character.
808 */
809 const char *setup_git_directory(void)
810 {
811 return setup_git_directory_gently(NULL);
812 }