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 */
142 } else if (!no_wildcard(arg
))
145 name
= prefix_filename(prefix
, strlen(prefix
), arg
);
148 if (!lstat(name
, &st
))
149 return 1; /* file exists */
150 if (errno
== ENOENT
|| errno
== ENOTDIR
)
151 return 0; /* file does not exist */
152 die_errno("failed to stat '%s'", arg
);
155 static void NORETURN
die_verify_filename(const char *prefix
,
157 int diagnose_misspelt_rev
)
159 if (!diagnose_misspelt_rev
)
160 die("%s: no such path in the working tree.\n"
161 "Use 'git <command> -- <path>...' to specify paths that do not exist locally.",
164 * Saying "'(icase)foo' does not exist in the index" when the
165 * user gave us ":(icase)foo" is just stupid. A magic pathspec
166 * begins with a colon and is followed by a non-alnum; do not
167 * let maybe_die_on_misspelt_object_name() even trigger.
169 if (!(arg
[0] == ':' && !isalnum(arg
[1])))
170 maybe_die_on_misspelt_object_name(arg
, prefix
);
172 /* ... or fall back the most general message. */
173 die("ambiguous argument '%s': unknown revision or path not in the working tree.\n"
174 "Use '--' to separate paths from revisions, like this:\n"
175 "'git <command> [<revision>...] -- [<file>...]'", arg
);
180 * Verify a filename that we got as an argument for a pathspec
181 * entry. Note that a filename that begins with "-" never verifies
182 * as true, because even if such a filename were to exist, we want
183 * it to be preceded by the "--" marker (or we want the user to
184 * use a format like "./-filename")
186 * The "diagnose_misspelt_rev" is used to provide a user-friendly
187 * diagnosis when dying upon finding that "name" is not a pathname.
188 * If set to 1, the diagnosis will try to diagnose "name" as an
189 * invalid object name (e.g. HEAD:foo). If set to 0, the diagnosis
190 * will only complain about an inexisting file.
192 * This function is typically called to check that a "file or rev"
193 * argument is unambiguous. In this case, the caller will want
194 * diagnose_misspelt_rev == 1 when verifying the first non-rev
195 * argument (which could have been a revision), and
196 * diagnose_misspelt_rev == 0 for the next ones (because we already
197 * saw a filename, there's not ambiguity anymore).
199 void verify_filename(const char *prefix
,
201 int diagnose_misspelt_rev
)
204 die("bad flag '%s' used after filename", arg
);
205 if (check_filename(prefix
, arg
))
207 die_verify_filename(prefix
, arg
, diagnose_misspelt_rev
);
211 * Opposite of the above: the command line did not have -- marker
212 * and we parsed the arg as a refname. It should not be interpretable
215 void verify_non_filename(const char *prefix
, const char *arg
)
217 if (!is_inside_work_tree() || is_inside_git_dir())
221 if (!check_filename(prefix
, arg
))
223 die("ambiguous argument '%s': both revision and filename\n"
224 "Use '--' to separate paths from revisions, like this:\n"
225 "'git <command> [<revision>...] -- [<file>...]'", arg
);
228 int get_common_dir(struct strbuf
*sb
, const char *gitdir
)
230 const char *git_env_common_dir
= getenv(GIT_COMMON_DIR_ENVIRONMENT
);
231 if (git_env_common_dir
) {
232 strbuf_addstr(sb
, git_env_common_dir
);
235 return get_common_dir_noenv(sb
, gitdir
);
239 int get_common_dir_noenv(struct strbuf
*sb
, const char *gitdir
)
241 struct strbuf data
= STRBUF_INIT
;
242 struct strbuf path
= STRBUF_INIT
;
245 strbuf_addf(&path
, "%s/commondir", gitdir
);
246 if (file_exists(path
.buf
)) {
247 if (strbuf_read_file(&data
, path
.buf
, 0) <= 0)
248 die_errno(_("failed to read %s"), path
.buf
);
249 while (data
.len
&& (data
.buf
[data
.len
- 1] == '\n' ||
250 data
.buf
[data
.len
- 1] == '\r'))
252 data
.buf
[data
.len
] = '\0';
254 if (!is_absolute_path(data
.buf
))
255 strbuf_addf(&path
, "%s/", gitdir
);
256 strbuf_addbuf(&path
, &data
);
257 strbuf_addstr(sb
, real_path(path
.buf
));
260 strbuf_addstr(sb
, gitdir
);
261 strbuf_release(&data
);
262 strbuf_release(&path
);
267 * Test if it looks like we're at a git directory.
270 * - either an objects/ directory _or_ the proper
271 * GIT_OBJECT_DIRECTORY environment variable
272 * - a refs/ directory
273 * - either a HEAD symlink or a HEAD file that is formatted as
274 * a proper "ref:", or a regular file HEAD that has a properly
275 * formatted sha1 object name.
277 int is_git_directory(const char *suspect
)
279 struct strbuf path
= STRBUF_INIT
;
283 /* Check worktree-related signatures */
284 strbuf_addf(&path
, "%s/HEAD", suspect
);
285 if (validate_headref(path
.buf
))
289 get_common_dir(&path
, suspect
);
292 /* Check non-worktree-related signatures */
293 if (getenv(DB_ENVIRONMENT
)) {
294 if (access(getenv(DB_ENVIRONMENT
), X_OK
))
298 strbuf_setlen(&path
, len
);
299 strbuf_addstr(&path
, "/objects");
300 if (access(path
.buf
, X_OK
))
304 strbuf_setlen(&path
, len
);
305 strbuf_addstr(&path
, "/refs");
306 if (access(path
.buf
, X_OK
))
311 strbuf_release(&path
);
315 int is_nonbare_repository_dir(struct strbuf
*path
)
319 size_t orig_path_len
= path
->len
;
320 assert(orig_path_len
!= 0);
321 strbuf_complete(path
, '/');
322 strbuf_addstr(path
, ".git");
323 if (read_gitfile_gently(path
->buf
, &gitfile_error
) || is_git_directory(path
->buf
))
325 if (gitfile_error
== READ_GITFILE_ERR_OPEN_FAILED
||
326 gitfile_error
== READ_GITFILE_ERR_READ_FAILED
)
328 strbuf_setlen(path
, orig_path_len
);
332 int is_inside_git_dir(void)
334 if (inside_git_dir
< 0)
335 inside_git_dir
= is_inside_dir(get_git_dir());
336 return inside_git_dir
;
339 int is_inside_work_tree(void)
341 if (inside_work_tree
< 0)
342 inside_work_tree
= is_inside_dir(get_git_work_tree());
343 return inside_work_tree
;
346 void setup_work_tree(void)
348 const char *work_tree
, *git_dir
;
349 static int initialized
= 0;
354 if (work_tree_config_is_bogus
)
355 die("unable to set up work tree using invalid config");
357 work_tree
= get_git_work_tree();
358 git_dir
= get_git_dir();
359 if (!is_absolute_path(git_dir
))
360 git_dir
= real_path(get_git_dir());
361 if (!work_tree
|| chdir(work_tree
))
362 die("This operation must be run in a work tree");
365 * Make sure subsequent git processes find correct worktree
366 * if $GIT_WORK_TREE is set relative
368 if (getenv(GIT_WORK_TREE_ENVIRONMENT
))
369 setenv(GIT_WORK_TREE_ENVIRONMENT
, ".", 1);
371 set_git_dir(remove_leading_path(git_dir
, work_tree
));
375 static int check_repo_format(const char *var
, const char *value
, void *cb
)
379 if (strcmp(var
, "core.repositoryformatversion") == 0)
380 repository_format_version
= git_config_int(var
, value
);
381 else if (strcmp(var
, "core.sharedrepository") == 0)
382 shared_repository
= git_config_perm(var
, value
);
383 else if (skip_prefix(var
, "extensions.", &ext
)) {
385 * record any known extensions here; otherwise,
386 * we fall through to recording it as unknown, and
387 * check_repository_format will complain
389 if (!strcmp(ext
, "noop"))
391 else if (!strcmp(ext
, "preciousobjects"))
392 repository_format_precious_objects
= git_config_bool(var
, value
);
394 string_list_append(&unknown_extensions
, ext
);
399 static int check_repository_format_gently(const char *gitdir
, int *nongit_ok
)
401 struct strbuf sb
= STRBUF_INIT
;
402 const char *repo_config
;
406 string_list_clear(&unknown_extensions
, 0);
408 if (get_common_dir(&sb
, gitdir
))
409 fn
= check_repo_format
;
411 fn
= check_repository_format_version
;
412 strbuf_addstr(&sb
, "/config");
413 repo_config
= sb
.buf
;
416 * git_config() can't be used here because it calls git_pathdup()
417 * to get $GIT_CONFIG/config. That call will make setup_git_env()
418 * set git_dir to ".git".
420 * We are in gitdir setup, no git dir has been found useable yet.
421 * Use a gentler version of git_config() to check if this repo
424 git_config_early(fn
, NULL
, repo_config
);
425 if (GIT_REPO_VERSION_READ
< repository_format_version
) {
427 die ("Expected git repo version <= %d, found %d",
428 GIT_REPO_VERSION_READ
, repository_format_version
);
429 warning("Expected git repo version <= %d, found %d",
430 GIT_REPO_VERSION_READ
, repository_format_version
);
431 warning("Please upgrade Git");
436 if (repository_format_version
>= 1 && unknown_extensions
.nr
) {
440 die("unknown repository extension: %s",
441 unknown_extensions
.items
[0].string
);
443 for (i
= 0; i
< unknown_extensions
.nr
; i
++)
444 warning("unknown repository extension: %s",
445 unknown_extensions
.items
[i
].string
);
454 static void update_linked_gitdir(const char *gitfile
, const char *gitdir
)
456 struct strbuf path
= STRBUF_INIT
;
459 strbuf_addf(&path
, "%s/gitdir", gitdir
);
460 if (stat(path
.buf
, &st
) || st
.st_mtime
+ 24 * 3600 < time(NULL
))
461 write_file(path
.buf
, "%s", gitfile
);
462 strbuf_release(&path
);
466 * Try to read the location of the git directory from the .git file,
467 * return path to git directory if found.
469 * On failure, if return_error_code is not NULL, return_error_code
470 * will be set to an error code and NULL will be returned. If
471 * return_error_code is NULL the function will die instead (for most
474 const char *read_gitfile_gently(const char *path
, int *return_error_code
)
476 const int max_file_size
= 1 << 20; /* 1MB */
485 if (stat(path
, &st
)) {
486 error_code
= READ_GITFILE_ERR_STAT_FAILED
;
489 if (!S_ISREG(st
.st_mode
)) {
490 error_code
= READ_GITFILE_ERR_NOT_A_FILE
;
493 if (st
.st_size
> max_file_size
) {
494 error_code
= READ_GITFILE_ERR_TOO_LARGE
;
497 fd
= open(path
, O_RDONLY
);
499 error_code
= READ_GITFILE_ERR_OPEN_FAILED
;
502 buf
= xmallocz(st
.st_size
);
503 len
= read_in_full(fd
, buf
, st
.st_size
);
505 if (len
!= st
.st_size
) {
506 error_code
= READ_GITFILE_ERR_READ_FAILED
;
509 if (!starts_with(buf
, "gitdir: ")) {
510 error_code
= READ_GITFILE_ERR_INVALID_FORMAT
;
513 while (buf
[len
- 1] == '\n' || buf
[len
- 1] == '\r')
516 error_code
= READ_GITFILE_ERR_NO_PATH
;
522 if (!is_absolute_path(dir
) && (slash
= strrchr(path
, '/'))) {
523 size_t pathlen
= slash
+1 - path
;
524 dir
= xstrfmt("%.*s%.*s", (int)pathlen
, path
,
525 (int)(len
- 8), buf
+ 8);
529 if (!is_git_directory(dir
)) {
530 error_code
= READ_GITFILE_ERR_NOT_A_REPO
;
533 update_linked_gitdir(path
, dir
);
534 path
= real_path(dir
);
537 if (return_error_code
)
538 *return_error_code
= error_code
;
539 else if (error_code
) {
540 switch (error_code
) {
541 case READ_GITFILE_ERR_STAT_FAILED
:
542 case READ_GITFILE_ERR_NOT_A_FILE
:
543 /* non-fatal; follow return path */
545 case READ_GITFILE_ERR_OPEN_FAILED
:
546 die_errno("Error opening '%s'", path
);
547 case READ_GITFILE_ERR_TOO_LARGE
:
548 die("Too large to be a .git file: '%s'", path
);
549 case READ_GITFILE_ERR_READ_FAILED
:
550 die("Error reading %s", path
);
551 case READ_GITFILE_ERR_INVALID_FORMAT
:
552 die("Invalid gitfile format: %s", path
);
553 case READ_GITFILE_ERR_NO_PATH
:
554 die("No path in gitfile: %s", path
);
555 case READ_GITFILE_ERR_NOT_A_REPO
:
556 die("Not a git repository: %s", dir
);
563 return error_code
? NULL
: path
;
566 static const char *setup_explicit_git_dir(const char *gitdirenv
,
570 const char *work_tree_env
= getenv(GIT_WORK_TREE_ENVIRONMENT
);
571 const char *worktree
;
575 if (PATH_MAX
- 40 < strlen(gitdirenv
))
576 die("'$%s' too big", GIT_DIR_ENVIRONMENT
);
578 gitfile
= (char*)read_gitfile(gitdirenv
);
580 gitfile
= xstrdup(gitfile
);
584 if (!is_git_directory(gitdirenv
)) {
590 die("Not a git repository: '%s'", gitdirenv
);
593 if (check_repository_format_gently(gitdirenv
, nongit_ok
)) {
598 /* #3, #7, #11, #15, #19, #23, #27, #31 (see t1510) */
600 set_git_work_tree(work_tree_env
);
601 else if (is_bare_repository_cfg
> 0) {
602 if (git_work_tree_cfg
) {
604 warning("core.bare and core.worktree do not make sense");
605 work_tree_config_is_bogus
= 1;
609 set_git_dir(gitdirenv
);
613 else if (git_work_tree_cfg
) { /* #6, #14 */
614 if (is_absolute_path(git_work_tree_cfg
))
615 set_git_work_tree(git_work_tree_cfg
);
618 if (chdir(gitdirenv
))
619 die_errno("Could not chdir to '%s'", gitdirenv
);
620 if (chdir(git_work_tree_cfg
))
621 die_errno("Could not chdir to '%s'", git_work_tree_cfg
);
622 core_worktree
= xgetcwd();
624 die_errno("Could not come back to cwd");
625 set_git_work_tree(core_worktree
);
629 else if (!git_env_bool(GIT_IMPLICIT_WORK_TREE_ENVIRONMENT
, 1)) {
631 set_git_dir(gitdirenv
);
636 set_git_work_tree(".");
638 /* set_git_work_tree() must have been called by now */
639 worktree
= get_git_work_tree();
641 /* both get_git_work_tree() and cwd are already normalized */
642 if (!strcmp(cwd
->buf
, worktree
)) { /* cwd == worktree */
643 set_git_dir(gitdirenv
);
648 offset
= dir_inside_of(cwd
->buf
, worktree
);
649 if (offset
>= 0) { /* cwd inside worktree? */
650 set_git_dir(real_path(gitdirenv
));
652 die_errno("Could not chdir to '%s'", worktree
);
653 strbuf_addch(cwd
, '/');
655 return cwd
->buf
+ offset
;
658 /* cwd outside worktree */
659 set_git_dir(gitdirenv
);
664 static const char *setup_discovered_git_dir(const char *gitdir
,
665 struct strbuf
*cwd
, int offset
,
668 if (check_repository_format_gently(gitdir
, nongit_ok
))
671 /* --work-tree is set without --git-dir; use discovered one */
672 if (getenv(GIT_WORK_TREE_ENVIRONMENT
) || git_work_tree_cfg
) {
673 if (offset
!= cwd
->len
&& !is_absolute_path(gitdir
))
674 gitdir
= xstrdup(real_path(gitdir
));
676 die_errno("Could not come back to cwd");
677 return setup_explicit_git_dir(gitdir
, cwd
, nongit_ok
);
680 /* #16.2, #17.2, #20.2, #21.2, #24, #25, #28, #29 (see t1510) */
681 if (is_bare_repository_cfg
> 0) {
682 set_git_dir(offset
== cwd
->len
? gitdir
: real_path(gitdir
));
684 die_errno("Could not come back to cwd");
688 /* #0, #1, #5, #8, #9, #12, #13 */
689 set_git_work_tree(".");
690 if (strcmp(gitdir
, DEFAULT_GIT_DIR_ENVIRONMENT
))
693 inside_work_tree
= 1;
694 if (offset
== cwd
->len
)
697 /* Make "offset" point to past the '/', and add a '/' at the end */
699 strbuf_addch(cwd
, '/');
700 return cwd
->buf
+ offset
;
703 /* #16.1, #17.1, #20.1, #21.1, #22.1 (see t1510) */
704 static const char *setup_bare_git_dir(struct strbuf
*cwd
, int offset
,
709 if (check_repository_format_gently(".", nongit_ok
))
712 setenv(GIT_IMPLICIT_WORK_TREE_ENVIRONMENT
, "0", 1);
714 /* --work-tree is set without --git-dir; use discovered one */
715 if (getenv(GIT_WORK_TREE_ENVIRONMENT
) || git_work_tree_cfg
) {
718 gitdir
= offset
== cwd
->len
? "." : xmemdupz(cwd
->buf
, offset
);
720 die_errno("Could not come back to cwd");
721 return setup_explicit_git_dir(gitdir
, cwd
, nongit_ok
);
725 inside_work_tree
= 0;
726 if (offset
!= cwd
->len
) {
728 die_errno("Cannot come back to cwd");
729 root_len
= offset_1st_component(cwd
->buf
);
730 strbuf_setlen(cwd
, offset
> root_len
? offset
: root_len
);
731 set_git_dir(cwd
->buf
);
738 static const char *setup_nongit(const char *cwd
, int *nongit_ok
)
741 die("Not a git repository (or any of the parent directories): %s", DEFAULT_GIT_DIR_ENVIRONMENT
);
743 die_errno("Cannot come back to cwd");
748 static dev_t
get_device_or_die(const char *path
, const char *prefix
, int prefix_len
)
751 if (stat(path
, &buf
)) {
752 die_errno("failed to stat '%*s%s%s'",
754 prefix
? prefix
: "",
755 prefix
? "/" : "", path
);
761 * A "string_list_each_func_t" function that canonicalizes an entry
762 * from GIT_CEILING_DIRECTORIES using real_path_if_valid(), or
763 * discards it if unusable. The presence of an empty entry in
764 * GIT_CEILING_DIRECTORIES turns off canonicalization for all
765 * subsequent entries.
767 static int canonicalize_ceiling_entry(struct string_list_item
*item
,
770 int *empty_entry_found
= cb_data
;
771 char *ceil
= item
->string
;
774 *empty_entry_found
= 1;
776 } else if (!is_absolute_path(ceil
)) {
778 } else if (*empty_entry_found
) {
779 /* Keep entry but do not canonicalize it */
782 const char *real_path
= real_path_if_valid(ceil
);
786 item
->string
= xstrdup(real_path
);
792 * We cannot decide in this function whether we are in the work tree or
793 * not, since the config can only be read _after_ this function was called.
795 static const char *setup_git_directory_gently_1(int *nongit_ok
)
797 const char *env_ceiling_dirs
= getenv(CEILING_DIRECTORIES_ENVIRONMENT
);
798 struct string_list ceiling_dirs
= STRING_LIST_INIT_DUP
;
799 static struct strbuf cwd
= STRBUF_INIT
;
800 const char *gitdirenv
, *ret
;
802 int offset
, offset_parent
, ceil_offset
= -1;
803 dev_t current_device
= 0;
804 int one_filesystem
= 1;
807 * We may have read an incomplete configuration before
808 * setting-up the git directory. If so, clear the cache so
809 * that the next queries to the configuration reload complete
810 * configuration (including the per-repo config file that we
811 * ignored previously).
816 * Let's assume that we are in a git repository.
817 * If it turns out later that we are somewhere else, the value will be
818 * updated accordingly.
823 if (strbuf_getcwd(&cwd
))
824 die_errno("Unable to read current working directory");
828 * If GIT_DIR is set explicitly, we're not going
829 * to do any discovery, but we still do repository
832 gitdirenv
= getenv(GIT_DIR_ENVIRONMENT
);
834 return setup_explicit_git_dir(gitdirenv
, &cwd
, nongit_ok
);
836 if (env_ceiling_dirs
) {
837 int empty_entry_found
= 0;
839 string_list_split(&ceiling_dirs
, env_ceiling_dirs
, PATH_SEP
, -1);
840 filter_string_list(&ceiling_dirs
, 0,
841 canonicalize_ceiling_entry
, &empty_entry_found
);
842 ceil_offset
= longest_ancestor_length(cwd
.buf
, &ceiling_dirs
);
843 string_list_clear(&ceiling_dirs
, 0);
846 if (ceil_offset
< 0 && has_dos_drive_prefix(cwd
.buf
))
850 * Test in the following order (relative to the cwd):
851 * - .git (file containing "gitdir: <path>")
860 one_filesystem
= !git_env_bool("GIT_DISCOVERY_ACROSS_FILESYSTEM", 0);
862 current_device
= get_device_or_die(".", NULL
, 0);
864 gitfile
= (char*)read_gitfile(DEFAULT_GIT_DIR_ENVIRONMENT
);
866 gitdirenv
= gitfile
= xstrdup(gitfile
);
868 if (is_git_directory(DEFAULT_GIT_DIR_ENVIRONMENT
))
869 gitdirenv
= DEFAULT_GIT_DIR_ENVIRONMENT
;
873 ret
= setup_discovered_git_dir(gitdirenv
,
881 if (is_git_directory("."))
882 return setup_bare_git_dir(&cwd
, offset
, nongit_ok
);
884 offset_parent
= offset
;
885 while (--offset_parent
> ceil_offset
&& cwd
.buf
[offset_parent
] != '/');
886 if (offset_parent
<= ceil_offset
)
887 return setup_nongit(cwd
.buf
, nongit_ok
);
888 if (one_filesystem
) {
889 dev_t parent_device
= get_device_or_die("..", cwd
.buf
,
891 if (parent_device
!= current_device
) {
894 die_errno("Cannot come back to cwd");
898 strbuf_setlen(&cwd
, offset
);
899 die("Not a git repository (or any parent up to mount point %s)\n"
900 "Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).",
905 strbuf_setlen(&cwd
, offset
);
906 die_errno("Cannot change to '%s/..'", cwd
.buf
);
908 offset
= offset_parent
;
912 const char *setup_git_directory_gently(int *nongit_ok
)
916 prefix
= setup_git_directory_gently_1(nongit_ok
);
918 setenv(GIT_PREFIX_ENVIRONMENT
, prefix
, 1);
920 setenv(GIT_PREFIX_ENVIRONMENT
, "", 1);
923 startup_info
->have_repository
= !nongit_ok
|| !*nongit_ok
;
924 startup_info
->prefix
= prefix
;
929 int git_config_perm(const char *var
, const char *value
)
937 if (!strcmp(value
, "umask"))
939 if (!strcmp(value
, "group"))
941 if (!strcmp(value
, "all") ||
942 !strcmp(value
, "world") ||
943 !strcmp(value
, "everybody"))
944 return PERM_EVERYBODY
;
946 /* Parse octal numbers */
947 i
= strtol(value
, &endptr
, 8);
949 /* If not an octal number, maybe true/false? */
951 return git_config_bool(var
, value
) ? PERM_GROUP
: PERM_UMASK
;
954 * Treat values 0, 1 and 2 as compatibility cases, otherwise it is
955 * a chmod value to restrict to.
958 case PERM_UMASK
: /* 0 */
960 case OLD_PERM_GROUP
: /* 1 */
962 case OLD_PERM_EVERYBODY
: /* 2 */
963 return PERM_EVERYBODY
;
966 /* A filemode value was given: 0xxx */
968 if ((i
& 0600) != 0600)
969 die("Problem with core.sharedRepository filemode value "
970 "(0%.3o).\nThe owner of files must always have "
971 "read and write permissions.", i
);
974 * Mask filemode value. Others can not get write permission.
975 * x flags for directories are handled separately.
980 int check_repository_format_version(const char *var
, const char *value
, void *cb
)
982 int ret
= check_repo_format(var
, value
, cb
);
985 if (strcmp(var
, "core.bare") == 0) {
986 is_bare_repository_cfg
= git_config_bool(var
, value
);
987 if (is_bare_repository_cfg
== 1)
988 inside_work_tree
= -1;
989 } else if (strcmp(var
, "core.worktree") == 0) {
991 return config_error_nonbool(var
);
992 free(git_work_tree_cfg
);
993 git_work_tree_cfg
= xstrdup(value
);
994 inside_work_tree
= -1;
999 int check_repository_format(void)
1001 return check_repository_format_gently(get_git_dir(), NULL
);
1005 * Returns the "prefix", a path to the current working directory
1006 * relative to the work tree root, or NULL, if the current working
1007 * directory is not a strict subdirectory of the work tree root. The
1008 * prefix always ends with a '/' character.
1010 const char *setup_git_directory(void)
1012 return setup_git_directory_gently(NULL
);
1015 const char *resolve_gitdir(const char *suspect
)
1017 if (is_git_directory(suspect
))
1019 return read_gitfile(suspect
);
1022 /* if any standard file descriptor is missing open it to /dev/null */
1023 void sanitize_stdfds(void)
1025 int fd
= open("/dev/null", O_RDWR
, 0);
1026 while (fd
!= -1 && fd
< 2)
1029 die_errno("open /dev/null or dup failed");
1036 #ifdef NO_POSIX_GOODIES
1044 die_errno("fork failed");
1049 die_errno("setsid failed");