3 #include "string-list.h"
5 static int inside_git_dir
= -1;
6 static int inside_work_tree
= -1;
7 static int work_tree_config_is_bogus
;
8 static struct string_list unknown_extensions
= STRING_LIST_INIT_DUP
;
11 * The input parameter must contain an absolute path, and it must already be
14 * Find the part of an absolute path that lies inside the work tree by
15 * dereferencing symlinks outside the work tree, for example:
16 * /dir1/repo/dir2/file (work tree is /dir1/repo) -> dir2/file
17 * /dir/file (work tree is /) -> dir/file
18 * /dir/symlink1/symlink2 (symlink1 points to work tree) -> symlink2
19 * /dir/repolink/file (repolink points to /dir/repo) -> file
20 * /dir/repo (exactly equal to work tree) -> (empty string)
22 static int abspath_part_inside_repo(char *path
)
28 const char *work_tree
= get_git_work_tree();
32 wtlen
= strlen(work_tree
);
34 off
= offset_1st_component(path
);
36 /* check if work tree is already the prefix */
37 if (wtlen
<= len
&& !strncmp(path
, work_tree
, wtlen
)) {
38 if (path
[wtlen
] == '/') {
39 memmove(path
, path
+ wtlen
+ 1, len
- wtlen
);
41 } else if (path
[wtlen
- 1] == '/' || path
[wtlen
] == '\0') {
42 /* work tree is the root, or the whole path */
43 memmove(path
, path
+ wtlen
, len
- wtlen
+ 1);
46 /* work tree might match beginning of a symlink to work tree */
52 /* check each '/'-terminated level */
57 if (strcmp(real_path(path0
), work_tree
) == 0) {
58 memmove(path0
, path
+ 1, len
- (path
- path0
));
65 /* check whole path */
66 if (strcmp(real_path(path0
), work_tree
) == 0) {
75 * Normalize "path", prepending the "prefix" for relative paths. If
76 * remaining_prefix is not NULL, return the actual prefix still
77 * remains in the path. For example, prefix = sub1/sub2/ and path is
79 * foo -> sub1/sub2/foo (full prefix)
80 * ../foo -> sub1/foo (remaining prefix is sub1/)
81 * ../../bar -> bar (no remaining prefix)
82 * ../../sub1/sub2/foo -> sub1/sub2/foo (but no remaining prefix)
83 * `pwd`/../bar -> sub1/bar (no remaining prefix)
85 char *prefix_path_gently(const char *prefix
, int len
,
86 int *remaining_prefix
, const char *path
)
88 const char *orig
= path
;
90 if (is_absolute_path(orig
)) {
91 sanitized
= xmallocz(strlen(path
));
93 *remaining_prefix
= 0;
94 if (normalize_path_copy_len(sanitized
, path
, remaining_prefix
)) {
98 if (abspath_part_inside_repo(sanitized
)) {
103 sanitized
= xstrfmt("%.*s%s", len
, prefix
, path
);
104 if (remaining_prefix
)
105 *remaining_prefix
= len
;
106 if (normalize_path_copy_len(sanitized
, sanitized
, remaining_prefix
)) {
114 char *prefix_path(const char *prefix
, int len
, const char *path
)
116 char *r
= prefix_path_gently(prefix
, len
, NULL
, path
);
118 die("'%s' is outside repository", path
);
122 int path_inside_repo(const char *prefix
, const char *path
)
124 int len
= prefix
? strlen(prefix
) : 0;
125 char *r
= prefix_path_gently(prefix
, len
, NULL
, path
);
133 int check_filename(const char *prefix
, const char *arg
)
138 if (starts_with(arg
, ":/")) {
139 if (arg
[2] == '\0') /* ":/" is root dir, always exists */
143 name
= prefix_filename(prefix
, strlen(prefix
), arg
);
146 if (!lstat(name
, &st
))
147 return 1; /* file exists */
148 if (errno
== ENOENT
|| errno
== ENOTDIR
)
149 return 0; /* file does not exist */
150 die_errno("failed to stat '%s'", arg
);
153 static void NORETURN
die_verify_filename(const char *prefix
,
155 int diagnose_misspelt_rev
)
157 if (!diagnose_misspelt_rev
)
158 die("%s: no such path in the working tree.\n"
159 "Use 'git <command> -- <path>...' to specify paths that do not exist locally.",
162 * Saying "'(icase)foo' does not exist in the index" when the
163 * user gave us ":(icase)foo" is just stupid. A magic pathspec
164 * begins with a colon and is followed by a non-alnum; do not
165 * let maybe_die_on_misspelt_object_name() even trigger.
167 if (!(arg
[0] == ':' && !isalnum(arg
[1])))
168 maybe_die_on_misspelt_object_name(arg
, prefix
);
170 /* ... or fall back the most general message. */
171 die("ambiguous argument '%s': unknown revision or path not in the working tree.\n"
172 "Use '--' to separate paths from revisions, like this:\n"
173 "'git <command> [<revision>...] -- [<file>...]'", arg
);
178 * Verify a filename that we got as an argument for a pathspec
179 * entry. Note that a filename that begins with "-" never verifies
180 * as true, because even if such a filename were to exist, we want
181 * it to be preceded by the "--" marker (or we want the user to
182 * use a format like "./-filename")
184 * The "diagnose_misspelt_rev" is used to provide a user-friendly
185 * diagnosis when dying upon finding that "name" is not a pathname.
186 * If set to 1, the diagnosis will try to diagnose "name" as an
187 * invalid object name (e.g. HEAD:foo). If set to 0, the diagnosis
188 * will only complain about an inexisting file.
190 * This function is typically called to check that a "file or rev"
191 * argument is unambiguous. In this case, the caller will want
192 * diagnose_misspelt_rev == 1 when verifying the first non-rev
193 * argument (which could have been a revision), and
194 * diagnose_misspelt_rev == 0 for the next ones (because we already
195 * saw a filename, there's not ambiguity anymore).
197 void verify_filename(const char *prefix
,
199 int diagnose_misspelt_rev
)
202 die("bad flag '%s' used after filename", arg
);
203 if (check_filename(prefix
, arg
) || !no_wildcard(arg
))
205 die_verify_filename(prefix
, arg
, diagnose_misspelt_rev
);
209 * Opposite of the above: the command line did not have -- marker
210 * and we parsed the arg as a refname. It should not be interpretable
213 void verify_non_filename(const char *prefix
, const char *arg
)
215 if (!is_inside_work_tree() || is_inside_git_dir())
219 if (!check_filename(prefix
, arg
))
221 die("ambiguous argument '%s': both revision and filename\n"
222 "Use '--' to separate paths from revisions, like this:\n"
223 "'git <command> [<revision>...] -- [<file>...]'", arg
);
226 int get_common_dir(struct strbuf
*sb
, const char *gitdir
)
228 const char *git_env_common_dir
= getenv(GIT_COMMON_DIR_ENVIRONMENT
);
229 if (git_env_common_dir
) {
230 strbuf_addstr(sb
, git_env_common_dir
);
233 return get_common_dir_noenv(sb
, gitdir
);
237 int get_common_dir_noenv(struct strbuf
*sb
, const char *gitdir
)
239 struct strbuf data
= STRBUF_INIT
;
240 struct strbuf path
= STRBUF_INIT
;
243 strbuf_addf(&path
, "%s/commondir", gitdir
);
244 if (file_exists(path
.buf
)) {
245 if (strbuf_read_file(&data
, path
.buf
, 0) <= 0)
246 die_errno(_("failed to read %s"), path
.buf
);
247 while (data
.len
&& (data
.buf
[data
.len
- 1] == '\n' ||
248 data
.buf
[data
.len
- 1] == '\r'))
250 data
.buf
[data
.len
] = '\0';
252 if (!is_absolute_path(data
.buf
))
253 strbuf_addf(&path
, "%s/", gitdir
);
254 strbuf_addbuf(&path
, &data
);
255 strbuf_addstr(sb
, real_path(path
.buf
));
258 strbuf_addstr(sb
, gitdir
);
259 strbuf_release(&data
);
260 strbuf_release(&path
);
265 * Test if it looks like we're at a git directory.
268 * - either an objects/ directory _or_ the proper
269 * GIT_OBJECT_DIRECTORY environment variable
270 * - a refs/ directory
271 * - either a HEAD symlink or a HEAD file that is formatted as
272 * a proper "ref:", or a regular file HEAD that has a properly
273 * formatted sha1 object name.
275 int is_git_directory(const char *suspect
)
277 struct strbuf path
= STRBUF_INIT
;
281 /* Check worktree-related signatures */
282 strbuf_addf(&path
, "%s/HEAD", suspect
);
283 if (validate_headref(path
.buf
))
287 get_common_dir(&path
, suspect
);
290 /* Check non-worktree-related signatures */
291 if (getenv(DB_ENVIRONMENT
)) {
292 if (access(getenv(DB_ENVIRONMENT
), X_OK
))
296 strbuf_setlen(&path
, len
);
297 strbuf_addstr(&path
, "/objects");
298 if (access(path
.buf
, X_OK
))
302 strbuf_setlen(&path
, len
);
303 strbuf_addstr(&path
, "/refs");
304 if (access(path
.buf
, X_OK
))
309 strbuf_release(&path
);
313 int is_nonbare_repository_dir(struct strbuf
*path
)
317 size_t orig_path_len
= path
->len
;
318 assert(orig_path_len
!= 0);
319 strbuf_complete(path
, '/');
320 strbuf_addstr(path
, ".git");
321 if (read_gitfile_gently(path
->buf
, &gitfile_error
) || is_git_directory(path
->buf
))
323 if (gitfile_error
== READ_GITFILE_ERR_OPEN_FAILED
||
324 gitfile_error
== READ_GITFILE_ERR_READ_FAILED
)
326 strbuf_setlen(path
, orig_path_len
);
330 int is_inside_git_dir(void)
332 if (inside_git_dir
< 0)
333 inside_git_dir
= is_inside_dir(get_git_dir());
334 return inside_git_dir
;
337 int is_inside_work_tree(void)
339 if (inside_work_tree
< 0)
340 inside_work_tree
= is_inside_dir(get_git_work_tree());
341 return inside_work_tree
;
344 void setup_work_tree(void)
346 const char *work_tree
, *git_dir
;
347 static int initialized
= 0;
352 if (work_tree_config_is_bogus
)
353 die("unable to set up work tree using invalid config");
355 work_tree
= get_git_work_tree();
356 git_dir
= get_git_dir();
357 if (!is_absolute_path(git_dir
))
358 git_dir
= real_path(get_git_dir());
359 if (!work_tree
|| chdir(work_tree
))
360 die("This operation must be run in a work tree");
363 * Make sure subsequent git processes find correct worktree
364 * if $GIT_WORK_TREE is set relative
366 if (getenv(GIT_WORK_TREE_ENVIRONMENT
))
367 setenv(GIT_WORK_TREE_ENVIRONMENT
, ".", 1);
369 set_git_dir(remove_leading_path(git_dir
, work_tree
));
373 static int check_repo_format(const char *var
, const char *value
, void *cb
)
377 if (strcmp(var
, "core.repositoryformatversion") == 0)
378 repository_format_version
= git_config_int(var
, value
);
379 else if (skip_prefix(var
, "extensions.", &ext
)) {
381 * record any known extensions here; otherwise,
382 * we fall through to recording it as unknown, and
383 * check_repository_format will complain
385 if (!strcmp(ext
, "noop"))
387 else if (!strcmp(ext
, "preciousobjects"))
388 repository_format_precious_objects
= git_config_bool(var
, value
);
390 string_list_append(&unknown_extensions
, ext
);
395 static int check_repository_format_gently(const char *gitdir
, int *nongit_ok
)
397 struct strbuf sb
= STRBUF_INIT
;
398 const char *repo_config
;
402 string_list_clear(&unknown_extensions
, 0);
404 if (get_common_dir(&sb
, gitdir
))
405 fn
= check_repo_format
;
407 fn
= check_repository_format_version
;
408 strbuf_addstr(&sb
, "/config");
409 repo_config
= sb
.buf
;
412 * git_config() can't be used here because it calls git_pathdup()
413 * to get $GIT_CONFIG/config. That call will make setup_git_env()
414 * set git_dir to ".git".
416 * We are in gitdir setup, no git dir has been found useable yet.
417 * Use a gentler version of git_config() to check if this repo
420 git_config_early(fn
, NULL
, repo_config
);
421 if (GIT_REPO_VERSION_READ
< repository_format_version
) {
423 die ("Expected git repo version <= %d, found %d",
424 GIT_REPO_VERSION_READ
, repository_format_version
);
425 warning("Expected git repo version <= %d, found %d",
426 GIT_REPO_VERSION_READ
, repository_format_version
);
427 warning("Please upgrade Git");
432 if (repository_format_version
>= 1 && unknown_extensions
.nr
) {
436 die("unknown repository extension: %s",
437 unknown_extensions
.items
[0].string
);
439 for (i
= 0; i
< unknown_extensions
.nr
; i
++)
440 warning("unknown repository extension: %s",
441 unknown_extensions
.items
[i
].string
);
451 * Try to read the location of the git directory from the .git file,
452 * return path to git directory if found.
454 * On failure, if return_error_code is not NULL, return_error_code
455 * will be set to an error code and NULL will be returned. If
456 * return_error_code is NULL the function will die instead (for most
459 const char *read_gitfile_gently(const char *path
, int *return_error_code
)
461 const int max_file_size
= 1 << 20; /* 1MB */
470 if (stat(path
, &st
)) {
471 error_code
= READ_GITFILE_ERR_STAT_FAILED
;
474 if (!S_ISREG(st
.st_mode
)) {
475 error_code
= READ_GITFILE_ERR_NOT_A_FILE
;
478 if (st
.st_size
> max_file_size
) {
479 error_code
= READ_GITFILE_ERR_TOO_LARGE
;
482 fd
= open(path
, O_RDONLY
);
484 error_code
= READ_GITFILE_ERR_OPEN_FAILED
;
487 buf
= xmallocz(st
.st_size
);
488 len
= read_in_full(fd
, buf
, st
.st_size
);
490 if (len
!= st
.st_size
) {
491 error_code
= READ_GITFILE_ERR_READ_FAILED
;
494 if (!starts_with(buf
, "gitdir: ")) {
495 error_code
= READ_GITFILE_ERR_INVALID_FORMAT
;
498 while (buf
[len
- 1] == '\n' || buf
[len
- 1] == '\r')
501 error_code
= READ_GITFILE_ERR_NO_PATH
;
507 if (!is_absolute_path(dir
) && (slash
= strrchr(path
, '/'))) {
508 size_t pathlen
= slash
+1 - path
;
509 dir
= xstrfmt("%.*s%.*s", (int)pathlen
, path
,
510 (int)(len
- 8), buf
+ 8);
514 if (!is_git_directory(dir
)) {
515 error_code
= READ_GITFILE_ERR_NOT_A_REPO
;
518 path
= real_path(dir
);
521 if (return_error_code
)
522 *return_error_code
= error_code
;
523 else if (error_code
) {
524 switch (error_code
) {
525 case READ_GITFILE_ERR_STAT_FAILED
:
526 case READ_GITFILE_ERR_NOT_A_FILE
:
527 /* non-fatal; follow return path */
529 case READ_GITFILE_ERR_OPEN_FAILED
:
530 die_errno("Error opening '%s'", path
);
531 case READ_GITFILE_ERR_TOO_LARGE
:
532 die("Too large to be a .git file: '%s'", path
);
533 case READ_GITFILE_ERR_READ_FAILED
:
534 die("Error reading %s", path
);
535 case READ_GITFILE_ERR_INVALID_FORMAT
:
536 die("Invalid gitfile format: %s", path
);
537 case READ_GITFILE_ERR_NO_PATH
:
538 die("No path in gitfile: %s", path
);
539 case READ_GITFILE_ERR_NOT_A_REPO
:
540 die("Not a git repository: %s", dir
);
547 return error_code
? NULL
: path
;
550 static const char *setup_explicit_git_dir(const char *gitdirenv
,
554 const char *work_tree_env
= getenv(GIT_WORK_TREE_ENVIRONMENT
);
555 const char *worktree
;
559 if (PATH_MAX
- 40 < strlen(gitdirenv
))
560 die("'$%s' too big", GIT_DIR_ENVIRONMENT
);
562 gitfile
= (char*)read_gitfile(gitdirenv
);
564 gitfile
= xstrdup(gitfile
);
568 if (!is_git_directory(gitdirenv
)) {
574 die("Not a git repository: '%s'", gitdirenv
);
577 if (check_repository_format_gently(gitdirenv
, nongit_ok
)) {
582 /* #3, #7, #11, #15, #19, #23, #27, #31 (see t1510) */
584 set_git_work_tree(work_tree_env
);
585 else if (is_bare_repository_cfg
> 0) {
586 if (git_work_tree_cfg
) {
588 warning("core.bare and core.worktree do not make sense");
589 work_tree_config_is_bogus
= 1;
593 set_git_dir(gitdirenv
);
597 else if (git_work_tree_cfg
) { /* #6, #14 */
598 if (is_absolute_path(git_work_tree_cfg
))
599 set_git_work_tree(git_work_tree_cfg
);
602 if (chdir(gitdirenv
))
603 die_errno("Could not chdir to '%s'", gitdirenv
);
604 if (chdir(git_work_tree_cfg
))
605 die_errno("Could not chdir to '%s'", git_work_tree_cfg
);
606 core_worktree
= xgetcwd();
608 die_errno("Could not come back to cwd");
609 set_git_work_tree(core_worktree
);
613 else if (!git_env_bool(GIT_IMPLICIT_WORK_TREE_ENVIRONMENT
, 1)) {
615 set_git_dir(gitdirenv
);
620 set_git_work_tree(".");
622 /* set_git_work_tree() must have been called by now */
623 worktree
= get_git_work_tree();
625 /* both get_git_work_tree() and cwd are already normalized */
626 if (!strcmp(cwd
->buf
, worktree
)) { /* cwd == worktree */
627 set_git_dir(gitdirenv
);
632 offset
= dir_inside_of(cwd
->buf
, worktree
);
633 if (offset
>= 0) { /* cwd inside worktree? */
634 set_git_dir(real_path(gitdirenv
));
636 die_errno("Could not chdir to '%s'", worktree
);
637 strbuf_addch(cwd
, '/');
639 return cwd
->buf
+ offset
;
642 /* cwd outside worktree */
643 set_git_dir(gitdirenv
);
648 static const char *setup_discovered_git_dir(const char *gitdir
,
649 struct strbuf
*cwd
, int offset
,
652 if (check_repository_format_gently(gitdir
, nongit_ok
))
655 /* --work-tree is set without --git-dir; use discovered one */
656 if (getenv(GIT_WORK_TREE_ENVIRONMENT
) || git_work_tree_cfg
) {
657 if (offset
!= cwd
->len
&& !is_absolute_path(gitdir
))
658 gitdir
= xstrdup(real_path(gitdir
));
660 die_errno("Could not come back to cwd");
661 return setup_explicit_git_dir(gitdir
, cwd
, nongit_ok
);
664 /* #16.2, #17.2, #20.2, #21.2, #24, #25, #28, #29 (see t1510) */
665 if (is_bare_repository_cfg
> 0) {
666 set_git_dir(offset
== cwd
->len
? gitdir
: real_path(gitdir
));
668 die_errno("Could not come back to cwd");
672 /* #0, #1, #5, #8, #9, #12, #13 */
673 set_git_work_tree(".");
674 if (strcmp(gitdir
, DEFAULT_GIT_DIR_ENVIRONMENT
))
677 inside_work_tree
= 1;
678 if (offset
== cwd
->len
)
681 /* Make "offset" point to past the '/', and add a '/' at the end */
683 strbuf_addch(cwd
, '/');
684 return cwd
->buf
+ offset
;
687 /* #16.1, #17.1, #20.1, #21.1, #22.1 (see t1510) */
688 static const char *setup_bare_git_dir(struct strbuf
*cwd
, int offset
,
693 if (check_repository_format_gently(".", nongit_ok
))
696 setenv(GIT_IMPLICIT_WORK_TREE_ENVIRONMENT
, "0", 1);
698 /* --work-tree is set without --git-dir; use discovered one */
699 if (getenv(GIT_WORK_TREE_ENVIRONMENT
) || git_work_tree_cfg
) {
702 gitdir
= offset
== cwd
->len
? "." : xmemdupz(cwd
->buf
, offset
);
704 die_errno("Could not come back to cwd");
705 return setup_explicit_git_dir(gitdir
, cwd
, nongit_ok
);
709 inside_work_tree
= 0;
710 if (offset
!= cwd
->len
) {
712 die_errno("Cannot come back to cwd");
713 root_len
= offset_1st_component(cwd
->buf
);
714 strbuf_setlen(cwd
, offset
> root_len
? offset
: root_len
);
715 set_git_dir(cwd
->buf
);
722 static const char *setup_nongit(const char *cwd
, int *nongit_ok
)
725 die("Not a git repository (or any of the parent directories): %s", DEFAULT_GIT_DIR_ENVIRONMENT
);
727 die_errno("Cannot come back to cwd");
732 static dev_t
get_device_or_die(const char *path
, const char *prefix
, int prefix_len
)
735 if (stat(path
, &buf
)) {
736 die_errno("failed to stat '%*s%s%s'",
738 prefix
? prefix
: "",
739 prefix
? "/" : "", path
);
745 * A "string_list_each_func_t" function that canonicalizes an entry
746 * from GIT_CEILING_DIRECTORIES using real_path_if_valid(), or
747 * discards it if unusable. The presence of an empty entry in
748 * GIT_CEILING_DIRECTORIES turns off canonicalization for all
749 * subsequent entries.
751 static int canonicalize_ceiling_entry(struct string_list_item
*item
,
754 int *empty_entry_found
= cb_data
;
755 char *ceil
= item
->string
;
758 *empty_entry_found
= 1;
760 } else if (!is_absolute_path(ceil
)) {
762 } else if (*empty_entry_found
) {
763 /* Keep entry but do not canonicalize it */
766 const char *real_path
= real_path_if_valid(ceil
);
770 item
->string
= xstrdup(real_path
);
776 * We cannot decide in this function whether we are in the work tree or
777 * not, since the config can only be read _after_ this function was called.
779 static const char *setup_git_directory_gently_1(int *nongit_ok
)
781 const char *env_ceiling_dirs
= getenv(CEILING_DIRECTORIES_ENVIRONMENT
);
782 struct string_list ceiling_dirs
= STRING_LIST_INIT_DUP
;
783 static struct strbuf cwd
= STRBUF_INIT
;
784 const char *gitdirenv
, *ret
;
786 int offset
, offset_parent
, ceil_offset
= -1;
787 dev_t current_device
= 0;
788 int one_filesystem
= 1;
791 * We may have read an incomplete configuration before
792 * setting-up the git directory. If so, clear the cache so
793 * that the next queries to the configuration reload complete
794 * configuration (including the per-repo config file that we
795 * ignored previously).
800 * Let's assume that we are in a git repository.
801 * If it turns out later that we are somewhere else, the value will be
802 * updated accordingly.
807 if (strbuf_getcwd(&cwd
))
808 die_errno("Unable to read current working directory");
812 * If GIT_DIR is set explicitly, we're not going
813 * to do any discovery, but we still do repository
816 gitdirenv
= getenv(GIT_DIR_ENVIRONMENT
);
818 return setup_explicit_git_dir(gitdirenv
, &cwd
, nongit_ok
);
820 if (env_ceiling_dirs
) {
821 int empty_entry_found
= 0;
823 string_list_split(&ceiling_dirs
, env_ceiling_dirs
, PATH_SEP
, -1);
824 filter_string_list(&ceiling_dirs
, 0,
825 canonicalize_ceiling_entry
, &empty_entry_found
);
826 ceil_offset
= longest_ancestor_length(cwd
.buf
, &ceiling_dirs
);
827 string_list_clear(&ceiling_dirs
, 0);
830 if (ceil_offset
< 0 && has_dos_drive_prefix(cwd
.buf
))
834 * Test in the following order (relative to the cwd):
835 * - .git (file containing "gitdir: <path>")
844 one_filesystem
= !git_env_bool("GIT_DISCOVERY_ACROSS_FILESYSTEM", 0);
846 current_device
= get_device_or_die(".", NULL
, 0);
848 gitfile
= (char*)read_gitfile(DEFAULT_GIT_DIR_ENVIRONMENT
);
850 gitdirenv
= gitfile
= xstrdup(gitfile
);
852 if (is_git_directory(DEFAULT_GIT_DIR_ENVIRONMENT
))
853 gitdirenv
= DEFAULT_GIT_DIR_ENVIRONMENT
;
857 ret
= setup_discovered_git_dir(gitdirenv
,
865 if (is_git_directory("."))
866 return setup_bare_git_dir(&cwd
, offset
, nongit_ok
);
868 offset_parent
= offset
;
869 while (--offset_parent
> ceil_offset
&& cwd
.buf
[offset_parent
] != '/');
870 if (offset_parent
<= ceil_offset
)
871 return setup_nongit(cwd
.buf
, nongit_ok
);
872 if (one_filesystem
) {
873 dev_t parent_device
= get_device_or_die("..", cwd
.buf
,
875 if (parent_device
!= current_device
) {
878 die_errno("Cannot come back to cwd");
882 strbuf_setlen(&cwd
, offset
);
883 die("Not a git repository (or any parent up to mount point %s)\n"
884 "Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).",
889 strbuf_setlen(&cwd
, offset
);
890 die_errno("Cannot change to '%s/..'", cwd
.buf
);
892 offset
= offset_parent
;
896 const char *setup_git_directory_gently(int *nongit_ok
)
900 prefix
= setup_git_directory_gently_1(nongit_ok
);
902 setenv(GIT_PREFIX_ENVIRONMENT
, prefix
, 1);
904 setenv(GIT_PREFIX_ENVIRONMENT
, "", 1);
907 startup_info
->have_repository
= !nongit_ok
|| !*nongit_ok
;
908 startup_info
->prefix
= prefix
;
913 int git_config_perm(const char *var
, const char *value
)
921 if (!strcmp(value
, "umask"))
923 if (!strcmp(value
, "group"))
925 if (!strcmp(value
, "all") ||
926 !strcmp(value
, "world") ||
927 !strcmp(value
, "everybody"))
928 return PERM_EVERYBODY
;
930 /* Parse octal numbers */
931 i
= strtol(value
, &endptr
, 8);
933 /* If not an octal number, maybe true/false? */
935 return git_config_bool(var
, value
) ? PERM_GROUP
: PERM_UMASK
;
938 * Treat values 0, 1 and 2 as compatibility cases, otherwise it is
939 * a chmod value to restrict to.
942 case PERM_UMASK
: /* 0 */
944 case OLD_PERM_GROUP
: /* 1 */
946 case OLD_PERM_EVERYBODY
: /* 2 */
947 return PERM_EVERYBODY
;
950 /* A filemode value was given: 0xxx */
952 if ((i
& 0600) != 0600)
953 die("Problem with core.sharedRepository filemode value "
954 "(0%.3o).\nThe owner of files must always have "
955 "read and write permissions.", i
);
958 * Mask filemode value. Others can not get write permission.
959 * x flags for directories are handled separately.
964 int check_repository_format_version(const char *var
, const char *value
, void *cb
)
966 int ret
= check_repo_format(var
, value
, cb
);
969 if (strcmp(var
, "core.bare") == 0) {
970 is_bare_repository_cfg
= git_config_bool(var
, value
);
971 if (is_bare_repository_cfg
== 1)
972 inside_work_tree
= -1;
973 } else if (strcmp(var
, "core.worktree") == 0) {
975 return config_error_nonbool(var
);
976 free(git_work_tree_cfg
);
977 git_work_tree_cfg
= xstrdup(value
);
978 inside_work_tree
= -1;
983 void check_repository_format(void)
985 check_repository_format_gently(get_git_dir(), NULL
);
989 * Returns the "prefix", a path to the current working directory
990 * relative to the work tree root, or NULL, if the current working
991 * directory is not a strict subdirectory of the work tree root. The
992 * prefix always ends with a '/' character.
994 const char *setup_git_directory(void)
996 return setup_git_directory_gently(NULL
);
999 const char *resolve_gitdir(const char *suspect
)
1001 if (is_git_directory(suspect
))
1003 return read_gitfile(suspect
);
1006 /* if any standard file descriptor is missing open it to /dev/null */
1007 void sanitize_stdfds(void)
1009 int fd
= open("/dev/null", O_RDWR
, 0);
1010 while (fd
!= -1 && fd
< 2)
1013 die_errno("open /dev/null or dup failed");
1020 #ifdef NO_POSIX_GOODIES
1028 die_errno("fork failed");
1033 die_errno("setsid failed");