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
= xmalloc(strlen(path
) + 1);
93 *remaining_prefix
= 0;
94 if (normalize_path_copy_len(sanitized
, path
, remaining_prefix
)) {
98 if (abspath_part_inside_repo(sanitized
)) {
103 sanitized
= xmalloc(len
+ strlen(path
) + 1);
105 memcpy(sanitized
, prefix
, len
);
106 strcpy(sanitized
+ len
, path
);
107 if (remaining_prefix
)
108 *remaining_prefix
= len
;
109 if (normalize_path_copy_len(sanitized
, sanitized
, remaining_prefix
)) {
117 char *prefix_path(const char *prefix
, int len
, const char *path
)
119 char *r
= prefix_path_gently(prefix
, len
, NULL
, path
);
121 die("'%s' is outside repository", path
);
125 int path_inside_repo(const char *prefix
, const char *path
)
127 int len
= prefix
? strlen(prefix
) : 0;
128 char *r
= prefix_path_gently(prefix
, len
, NULL
, path
);
136 int check_filename(const char *prefix
, const char *arg
)
141 if (starts_with(arg
, ":/")) {
142 if (arg
[2] == '\0') /* ":/" is root dir, always exists */
145 } else if (!no_wildcard(arg
))
148 name
= prefix_filename(prefix
, strlen(prefix
), arg
);
151 if (!lstat(name
, &st
))
152 return 1; /* file exists */
153 if (errno
== ENOENT
|| errno
== ENOTDIR
)
154 return 0; /* file does not exist */
155 die_errno("failed to stat '%s'", arg
);
158 static void NORETURN
die_verify_filename(const char *prefix
,
160 int diagnose_misspelt_rev
)
162 if (!diagnose_misspelt_rev
)
163 die("%s: no such path in the working tree.\n"
164 "Use 'git <command> -- <path>...' to specify paths that do not exist locally.",
167 * Saying "'(icase)foo' does not exist in the index" when the
168 * user gave us ":(icase)foo" is just stupid. A magic pathspec
169 * begins with a colon and is followed by a non-alnum; do not
170 * let maybe_die_on_misspelt_object_name() even trigger.
172 if (!(arg
[0] == ':' && !isalnum(arg
[1])))
173 maybe_die_on_misspelt_object_name(arg
, prefix
);
175 /* ... or fall back the most general message. */
176 die("ambiguous argument '%s': unknown revision or path not in the working tree.\n"
177 "Use '--' to separate paths from revisions, like this:\n"
178 "'git <command> [<revision>...] -- [<file>...]'", arg
);
183 * Verify a filename that we got as an argument for a pathspec
184 * entry. Note that a filename that begins with "-" never verifies
185 * as true, because even if such a filename were to exist, we want
186 * it to be preceded by the "--" marker (or we want the user to
187 * use a format like "./-filename")
189 * The "diagnose_misspelt_rev" is used to provide a user-friendly
190 * diagnosis when dying upon finding that "name" is not a pathname.
191 * If set to 1, the diagnosis will try to diagnose "name" as an
192 * invalid object name (e.g. HEAD:foo). If set to 0, the diagnosis
193 * will only complain about an inexisting file.
195 * This function is typically called to check that a "file or rev"
196 * argument is unambiguous. In this case, the caller will want
197 * diagnose_misspelt_rev == 1 when verifying the first non-rev
198 * argument (which could have been a revision), and
199 * diagnose_misspelt_rev == 0 for the next ones (because we already
200 * saw a filename, there's not ambiguity anymore).
202 void verify_filename(const char *prefix
,
204 int diagnose_misspelt_rev
)
207 die("bad flag '%s' used after filename", arg
);
208 if (check_filename(prefix
, arg
))
210 die_verify_filename(prefix
, arg
, diagnose_misspelt_rev
);
214 * Opposite of the above: the command line did not have -- marker
215 * and we parsed the arg as a refname. It should not be interpretable
218 void verify_non_filename(const char *prefix
, const char *arg
)
220 if (!is_inside_work_tree() || is_inside_git_dir())
224 if (!check_filename(prefix
, arg
))
226 die("ambiguous argument '%s': both revision and filename\n"
227 "Use '--' to separate paths from revisions, like this:\n"
228 "'git <command> [<revision>...] -- [<file>...]'", arg
);
231 int get_common_dir(struct strbuf
*sb
, const char *gitdir
)
233 struct strbuf data
= STRBUF_INIT
;
234 struct strbuf path
= STRBUF_INIT
;
235 const char *git_common_dir
= getenv(GIT_COMMON_DIR_ENVIRONMENT
);
237 if (git_common_dir
) {
238 strbuf_addstr(sb
, git_common_dir
);
241 strbuf_addf(&path
, "%s/commondir", gitdir
);
242 if (file_exists(path
.buf
)) {
243 if (strbuf_read_file(&data
, path
.buf
, 0) <= 0)
244 die_errno(_("failed to read %s"), path
.buf
);
245 while (data
.len
&& (data
.buf
[data
.len
- 1] == '\n' ||
246 data
.buf
[data
.len
- 1] == '\r'))
248 data
.buf
[data
.len
] = '\0';
250 if (!is_absolute_path(data
.buf
))
251 strbuf_addf(&path
, "%s/", gitdir
);
252 strbuf_addbuf(&path
, &data
);
253 strbuf_addstr(sb
, real_path(path
.buf
));
256 strbuf_addstr(sb
, gitdir
);
257 strbuf_release(&data
);
258 strbuf_release(&path
);
263 * Test if it looks like we're at a git directory.
266 * - either an objects/ directory _or_ the proper
267 * GIT_OBJECT_DIRECTORY environment variable
268 * - a refs/ directory
269 * - either a HEAD symlink or a HEAD file that is formatted as
270 * a proper "ref:", or a regular file HEAD that has a properly
271 * formatted sha1 object name.
273 int is_git_directory(const char *suspect
)
275 struct strbuf path
= STRBUF_INIT
;
279 /* Check worktree-related signatures */
280 strbuf_addf(&path
, "%s/HEAD", suspect
);
281 if (validate_headref(path
.buf
))
285 get_common_dir(&path
, suspect
);
288 /* Check non-worktree-related signatures */
289 if (getenv(DB_ENVIRONMENT
)) {
290 if (access(getenv(DB_ENVIRONMENT
), X_OK
))
294 strbuf_setlen(&path
, len
);
295 strbuf_addstr(&path
, "/objects");
296 if (access(path
.buf
, X_OK
))
300 strbuf_setlen(&path
, len
);
301 strbuf_addstr(&path
, "/refs");
302 if (access(path
.buf
, X_OK
))
307 strbuf_release(&path
);
311 int is_inside_git_dir(void)
313 if (inside_git_dir
< 0)
314 inside_git_dir
= is_inside_dir(get_git_dir());
315 return inside_git_dir
;
318 int is_inside_work_tree(void)
320 if (inside_work_tree
< 0)
321 inside_work_tree
= is_inside_dir(get_git_work_tree());
322 return inside_work_tree
;
325 void setup_work_tree(void)
327 const char *work_tree
, *git_dir
;
328 static int initialized
= 0;
333 if (work_tree_config_is_bogus
)
334 die("unable to set up work tree using invalid config");
336 work_tree
= get_git_work_tree();
337 git_dir
= get_git_dir();
338 if (!is_absolute_path(git_dir
))
339 git_dir
= real_path(get_git_dir());
340 if (!work_tree
|| chdir(work_tree
))
341 die("This operation must be run in a work tree");
344 * Make sure subsequent git processes find correct worktree
345 * if $GIT_WORK_TREE is set relative
347 if (getenv(GIT_WORK_TREE_ENVIRONMENT
))
348 setenv(GIT_WORK_TREE_ENVIRONMENT
, ".", 1);
350 set_git_dir(remove_leading_path(git_dir
, work_tree
));
354 static int check_repo_format(const char *var
, const char *value
, void *cb
)
358 if (strcmp(var
, "core.repositoryformatversion") == 0)
359 repository_format_version
= git_config_int(var
, value
);
360 else if (strcmp(var
, "core.sharedrepository") == 0)
361 shared_repository
= git_config_perm(var
, value
);
362 else if (skip_prefix(var
, "extensions.", &ext
)) {
364 * record any known extensions here; otherwise,
365 * we fall through to recording it as unknown, and
366 * check_repository_format will complain
368 if (!strcmp(ext
, "noop"))
370 else if (!strcmp(ext
, "preciousobjects"))
371 repository_format_precious_objects
= git_config_bool(var
, value
);
373 string_list_append(&unknown_extensions
, ext
);
378 static int check_repository_format_gently(const char *gitdir
, int *nongit_ok
)
380 struct strbuf sb
= STRBUF_INIT
;
381 const char *repo_config
;
385 string_list_clear(&unknown_extensions
, 0);
387 if (get_common_dir(&sb
, gitdir
))
388 fn
= check_repo_format
;
390 fn
= check_repository_format_version
;
391 strbuf_addstr(&sb
, "/config");
392 repo_config
= sb
.buf
;
395 * git_config() can't be used here because it calls git_pathdup()
396 * to get $GIT_CONFIG/config. That call will make setup_git_env()
397 * set git_dir to ".git".
399 * We are in gitdir setup, no git dir has been found useable yet.
400 * Use a gentler version of git_config() to check if this repo
403 git_config_early(fn
, NULL
, repo_config
);
404 if (GIT_REPO_VERSION_READ
< repository_format_version
) {
406 die ("Expected git repo version <= %d, found %d",
407 GIT_REPO_VERSION_READ
, repository_format_version
);
408 warning("Expected git repo version <= %d, found %d",
409 GIT_REPO_VERSION_READ
, repository_format_version
);
410 warning("Please upgrade Git");
415 if (repository_format_version
>= 1 && unknown_extensions
.nr
) {
419 die("unknown repository extension: %s",
420 unknown_extensions
.items
[0].string
);
422 for (i
= 0; i
< unknown_extensions
.nr
; i
++)
423 warning("unknown repository extension: %s",
424 unknown_extensions
.items
[i
].string
);
433 static void update_linked_gitdir(const char *gitfile
, const char *gitdir
)
435 struct strbuf path
= STRBUF_INIT
;
438 strbuf_addf(&path
, "%s/gitdir", gitdir
);
439 if (stat(path
.buf
, &st
) || st
.st_mtime
+ 24 * 3600 < time(NULL
))
440 write_file(path
.buf
, "%s", gitfile
);
441 strbuf_release(&path
);
445 * Try to read the location of the git directory from the .git file,
446 * return path to git directory if found.
448 * On failure, if return_error_code is not NULL, return_error_code
449 * will be set to an error code and NULL will be returned. If
450 * return_error_code is NULL the function will die instead (for most
453 const char *read_gitfile_gently(const char *path
, int *return_error_code
)
455 const int max_file_size
= 1 << 20; /* 1MB */
464 if (stat(path
, &st
)) {
465 error_code
= READ_GITFILE_ERR_STAT_FAILED
;
468 if (!S_ISREG(st
.st_mode
)) {
469 error_code
= READ_GITFILE_ERR_NOT_A_FILE
;
472 if (st
.st_size
> max_file_size
) {
473 error_code
= READ_GITFILE_ERR_TOO_LARGE
;
476 fd
= open(path
, O_RDONLY
);
478 error_code
= READ_GITFILE_ERR_OPEN_FAILED
;
481 buf
= xmalloc(st
.st_size
+ 1);
482 len
= read_in_full(fd
, buf
, st
.st_size
);
484 if (len
!= st
.st_size
) {
485 error_code
= READ_GITFILE_ERR_READ_FAILED
;
489 if (!starts_with(buf
, "gitdir: ")) {
490 error_code
= READ_GITFILE_ERR_INVALID_FORMAT
;
493 while (buf
[len
- 1] == '\n' || buf
[len
- 1] == '\r')
496 error_code
= READ_GITFILE_ERR_NO_PATH
;
502 if (!is_absolute_path(dir
) && (slash
= strrchr(path
, '/'))) {
503 size_t pathlen
= slash
+1 - path
;
504 size_t dirlen
= pathlen
+ len
- 8;
505 dir
= xmalloc(dirlen
+ 1);
506 strncpy(dir
, path
, pathlen
);
507 strncpy(dir
+ pathlen
, buf
+ 8, len
- 8);
512 if (!is_git_directory(dir
)) {
513 error_code
= READ_GITFILE_ERR_NOT_A_REPO
;
516 update_linked_gitdir(path
, dir
);
517 path
= real_path(dir
);
520 if (return_error_code
)
521 *return_error_code
= error_code
;
522 else if (error_code
) {
523 switch (error_code
) {
524 case READ_GITFILE_ERR_STAT_FAILED
:
525 case READ_GITFILE_ERR_NOT_A_FILE
:
526 /* non-fatal; follow return path */
528 case READ_GITFILE_ERR_OPEN_FAILED
:
529 die_errno("Error opening '%s'", path
);
530 case READ_GITFILE_ERR_TOO_LARGE
:
531 die("Too large to be a .git file: '%s'", path
);
532 case READ_GITFILE_ERR_READ_FAILED
:
533 die("Error reading %s", path
);
534 case READ_GITFILE_ERR_INVALID_FORMAT
:
535 die("Invalid gitfile format: %s", path
);
536 case READ_GITFILE_ERR_NO_PATH
:
537 die("No path in gitfile: %s", path
);
538 case READ_GITFILE_ERR_NOT_A_REPO
:
539 die("Not a git repository: %s", dir
);
546 return error_code
? NULL
: path
;
549 static const char *setup_explicit_git_dir(const char *gitdirenv
,
553 const char *work_tree_env
= getenv(GIT_WORK_TREE_ENVIRONMENT
);
554 const char *worktree
;
558 if (PATH_MAX
- 40 < strlen(gitdirenv
))
559 die("'$%s' too big", GIT_DIR_ENVIRONMENT
);
561 gitfile
= (char*)read_gitfile(gitdirenv
);
563 gitfile
= xstrdup(gitfile
);
567 if (!is_git_directory(gitdirenv
)) {
573 die("Not a git repository: '%s'", gitdirenv
);
576 if (check_repository_format_gently(gitdirenv
, nongit_ok
)) {
581 /* #3, #7, #11, #15, #19, #23, #27, #31 (see t1510) */
583 set_git_work_tree(work_tree_env
);
584 else if (is_bare_repository_cfg
> 0) {
585 if (git_work_tree_cfg
) {
587 warning("core.bare and core.worktree do not make sense");
588 work_tree_config_is_bogus
= 1;
592 set_git_dir(gitdirenv
);
596 else if (git_work_tree_cfg
) { /* #6, #14 */
597 if (is_absolute_path(git_work_tree_cfg
))
598 set_git_work_tree(git_work_tree_cfg
);
601 if (chdir(gitdirenv
))
602 die_errno("Could not chdir to '%s'", gitdirenv
);
603 if (chdir(git_work_tree_cfg
))
604 die_errno("Could not chdir to '%s'", git_work_tree_cfg
);
605 core_worktree
= xgetcwd();
607 die_errno("Could not come back to cwd");
608 set_git_work_tree(core_worktree
);
612 else if (!git_env_bool(GIT_IMPLICIT_WORK_TREE_ENVIRONMENT
, 1)) {
614 set_git_dir(gitdirenv
);
619 set_git_work_tree(".");
621 /* set_git_work_tree() must have been called by now */
622 worktree
= get_git_work_tree();
624 /* both get_git_work_tree() and cwd are already normalized */
625 if (!strcmp(cwd
->buf
, worktree
)) { /* cwd == worktree */
626 set_git_dir(gitdirenv
);
631 offset
= dir_inside_of(cwd
->buf
, worktree
);
632 if (offset
>= 0) { /* cwd inside worktree? */
633 set_git_dir(real_path(gitdirenv
));
635 die_errno("Could not chdir to '%s'", worktree
);
636 strbuf_addch(cwd
, '/');
638 return cwd
->buf
+ offset
;
641 /* cwd outside worktree */
642 set_git_dir(gitdirenv
);
647 static const char *setup_discovered_git_dir(const char *gitdir
,
648 struct strbuf
*cwd
, int offset
,
651 if (check_repository_format_gently(gitdir
, nongit_ok
))
654 /* --work-tree is set without --git-dir; use discovered one */
655 if (getenv(GIT_WORK_TREE_ENVIRONMENT
) || git_work_tree_cfg
) {
656 if (offset
!= cwd
->len
&& !is_absolute_path(gitdir
))
657 gitdir
= xstrdup(real_path(gitdir
));
659 die_errno("Could not come back to cwd");
660 return setup_explicit_git_dir(gitdir
, cwd
, nongit_ok
);
663 /* #16.2, #17.2, #20.2, #21.2, #24, #25, #28, #29 (see t1510) */
664 if (is_bare_repository_cfg
> 0) {
665 set_git_dir(offset
== cwd
->len
? gitdir
: real_path(gitdir
));
667 die_errno("Could not come back to cwd");
671 /* #0, #1, #5, #8, #9, #12, #13 */
672 set_git_work_tree(".");
673 if (strcmp(gitdir
, DEFAULT_GIT_DIR_ENVIRONMENT
))
676 inside_work_tree
= 1;
677 if (offset
== cwd
->len
)
680 /* Make "offset" point to past the '/', and add a '/' at the end */
682 strbuf_addch(cwd
, '/');
683 return cwd
->buf
+ offset
;
686 /* #16.1, #17.1, #20.1, #21.1, #22.1 (see t1510) */
687 static const char *setup_bare_git_dir(struct strbuf
*cwd
, int offset
,
692 if (check_repository_format_gently(".", nongit_ok
))
695 setenv(GIT_IMPLICIT_WORK_TREE_ENVIRONMENT
, "0", 1);
697 /* --work-tree is set without --git-dir; use discovered one */
698 if (getenv(GIT_WORK_TREE_ENVIRONMENT
) || git_work_tree_cfg
) {
701 gitdir
= offset
== cwd
->len
? "." : xmemdupz(cwd
->buf
, offset
);
703 die_errno("Could not come back to cwd");
704 return setup_explicit_git_dir(gitdir
, cwd
, nongit_ok
);
708 inside_work_tree
= 0;
709 if (offset
!= cwd
->len
) {
711 die_errno("Cannot come back to cwd");
712 root_len
= offset_1st_component(cwd
->buf
);
713 strbuf_setlen(cwd
, offset
> root_len
? offset
: root_len
);
714 set_git_dir(cwd
->buf
);
721 static const char *setup_nongit(const char *cwd
, int *nongit_ok
)
724 die("Not a git repository (or any of the parent directories): %s", DEFAULT_GIT_DIR_ENVIRONMENT
);
726 die_errno("Cannot come back to cwd");
731 static dev_t
get_device_or_die(const char *path
, const char *prefix
, int prefix_len
)
734 if (stat(path
, &buf
)) {
735 die_errno("failed to stat '%*s%s%s'",
737 prefix
? prefix
: "",
738 prefix
? "/" : "", path
);
744 * A "string_list_each_func_t" function that canonicalizes an entry
745 * from GIT_CEILING_DIRECTORIES using real_path_if_valid(), or
746 * discards it if unusable. The presence of an empty entry in
747 * GIT_CEILING_DIRECTORIES turns off canonicalization for all
748 * subsequent entries.
750 static int canonicalize_ceiling_entry(struct string_list_item
*item
,
753 int *empty_entry_found
= cb_data
;
754 char *ceil
= item
->string
;
757 *empty_entry_found
= 1;
759 } else if (!is_absolute_path(ceil
)) {
761 } else if (*empty_entry_found
) {
762 /* Keep entry but do not canonicalize it */
765 const char *real_path
= real_path_if_valid(ceil
);
769 item
->string
= xstrdup(real_path
);
775 * We cannot decide in this function whether we are in the work tree or
776 * not, since the config can only be read _after_ this function was called.
778 static const char *setup_git_directory_gently_1(int *nongit_ok
)
780 const char *env_ceiling_dirs
= getenv(CEILING_DIRECTORIES_ENVIRONMENT
);
781 struct string_list ceiling_dirs
= STRING_LIST_INIT_DUP
;
782 static struct strbuf cwd
= STRBUF_INIT
;
783 const char *gitdirenv
, *ret
;
785 int offset
, offset_parent
, ceil_offset
= -1;
786 dev_t current_device
= 0;
787 int one_filesystem
= 1;
790 * We may have read an incomplete configuration before
791 * setting-up the git directory. If so, clear the cache so
792 * that the next queries to the configuration reload complete
793 * configuration (including the per-repo config file that we
794 * ignored previously).
799 * Let's assume that we are in a git repository.
800 * If it turns out later that we are somewhere else, the value will be
801 * updated accordingly.
806 if (strbuf_getcwd(&cwd
))
807 die_errno("Unable to read current working directory");
811 * If GIT_DIR is set explicitly, we're not going
812 * to do any discovery, but we still do repository
815 gitdirenv
= getenv(GIT_DIR_ENVIRONMENT
);
817 return setup_explicit_git_dir(gitdirenv
, &cwd
, nongit_ok
);
819 if (env_ceiling_dirs
) {
820 int empty_entry_found
= 0;
822 string_list_split(&ceiling_dirs
, env_ceiling_dirs
, PATH_SEP
, -1);
823 filter_string_list(&ceiling_dirs
, 0,
824 canonicalize_ceiling_entry
, &empty_entry_found
);
825 ceil_offset
= longest_ancestor_length(cwd
.buf
, &ceiling_dirs
);
826 string_list_clear(&ceiling_dirs
, 0);
829 if (ceil_offset
< 0 && has_dos_drive_prefix(cwd
.buf
))
833 * Test in the following order (relative to the cwd):
834 * - .git (file containing "gitdir: <path>")
843 one_filesystem
= !git_env_bool("GIT_DISCOVERY_ACROSS_FILESYSTEM", 0);
845 current_device
= get_device_or_die(".", NULL
, 0);
847 gitfile
= (char*)read_gitfile(DEFAULT_GIT_DIR_ENVIRONMENT
);
849 gitdirenv
= gitfile
= xstrdup(gitfile
);
851 if (is_git_directory(DEFAULT_GIT_DIR_ENVIRONMENT
))
852 gitdirenv
= DEFAULT_GIT_DIR_ENVIRONMENT
;
856 ret
= setup_discovered_git_dir(gitdirenv
,
864 if (is_git_directory("."))
865 return setup_bare_git_dir(&cwd
, offset
, nongit_ok
);
867 offset_parent
= offset
;
868 while (--offset_parent
> ceil_offset
&& cwd
.buf
[offset_parent
] != '/');
869 if (offset_parent
<= ceil_offset
)
870 return setup_nongit(cwd
.buf
, nongit_ok
);
871 if (one_filesystem
) {
872 dev_t parent_device
= get_device_or_die("..", cwd
.buf
,
874 if (parent_device
!= current_device
) {
877 die_errno("Cannot come back to cwd");
881 strbuf_setlen(&cwd
, offset
);
882 die("Not a git repository (or any parent up to mount point %s)\n"
883 "Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).",
888 strbuf_setlen(&cwd
, offset
);
889 die_errno("Cannot change to '%s/..'", cwd
.buf
);
891 offset
= offset_parent
;
895 const char *setup_git_directory_gently(int *nongit_ok
)
899 prefix
= setup_git_directory_gently_1(nongit_ok
);
901 setenv(GIT_PREFIX_ENVIRONMENT
, prefix
, 1);
903 setenv(GIT_PREFIX_ENVIRONMENT
, "", 1);
906 startup_info
->have_repository
= !nongit_ok
|| !*nongit_ok
;
907 startup_info
->prefix
= prefix
;
912 int git_config_perm(const char *var
, const char *value
)
920 if (!strcmp(value
, "umask"))
922 if (!strcmp(value
, "group"))
924 if (!strcmp(value
, "all") ||
925 !strcmp(value
, "world") ||
926 !strcmp(value
, "everybody"))
927 return PERM_EVERYBODY
;
929 /* Parse octal numbers */
930 i
= strtol(value
, &endptr
, 8);
932 /* If not an octal number, maybe true/false? */
934 return git_config_bool(var
, value
) ? PERM_GROUP
: PERM_UMASK
;
937 * Treat values 0, 1 and 2 as compatibility cases, otherwise it is
938 * a chmod value to restrict to.
941 case PERM_UMASK
: /* 0 */
943 case OLD_PERM_GROUP
: /* 1 */
945 case OLD_PERM_EVERYBODY
: /* 2 */
946 return PERM_EVERYBODY
;
949 /* A filemode value was given: 0xxx */
951 if ((i
& 0600) != 0600)
952 die("Problem with core.sharedRepository filemode value "
953 "(0%.3o).\nThe owner of files must always have "
954 "read and write permissions.", i
);
957 * Mask filemode value. Others can not get write permission.
958 * x flags for directories are handled separately.
963 int check_repository_format_version(const char *var
, const char *value
, void *cb
)
965 int ret
= check_repo_format(var
, value
, cb
);
968 if (strcmp(var
, "core.bare") == 0) {
969 is_bare_repository_cfg
= git_config_bool(var
, value
);
970 if (is_bare_repository_cfg
== 1)
971 inside_work_tree
= -1;
972 } else if (strcmp(var
, "core.worktree") == 0) {
974 return config_error_nonbool(var
);
975 free(git_work_tree_cfg
);
976 git_work_tree_cfg
= xstrdup(value
);
977 inside_work_tree
= -1;
982 int check_repository_format(void)
984 return check_repository_format_gently(get_git_dir(), NULL
);
988 * Returns the "prefix", a path to the current working directory
989 * relative to the work tree root, or NULL, if the current working
990 * directory is not a strict subdirectory of the work tree root. The
991 * prefix always ends with a '/' character.
993 const char *setup_git_directory(void)
995 return setup_git_directory_gently(NULL
);
998 const char *resolve_gitdir(const char *suspect
)
1000 if (is_git_directory(suspect
))
1002 return read_gitfile(suspect
);
1005 /* if any standard file descriptor is missing open it to /dev/null */
1006 void sanitize_stdfds(void)
1008 int fd
= open("/dev/null", O_RDWR
, 0);
1009 while (fd
!= -1 && fd
< 2)
1012 die_errno("open /dev/null or dup failed");
1019 #ifdef NO_POSIX_GOODIES
1027 die_errno("fork failed");
1032 die_errno("setsid failed");