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
;
10 static struct startup_info the_startup_info
;
11 struct startup_info
*startup_info
= &the_startup_info
;
14 * The input parameter must contain an absolute path, and it must already be
17 * Find the part of an absolute path that lies inside the work tree by
18 * dereferencing symlinks outside the work tree, for example:
19 * /dir1/repo/dir2/file (work tree is /dir1/repo) -> dir2/file
20 * /dir/file (work tree is /) -> dir/file
21 * /dir/symlink1/symlink2 (symlink1 points to work tree) -> symlink2
22 * /dir/repolink/file (repolink points to /dir/repo) -> file
23 * /dir/repo (exactly equal to work tree) -> (empty string)
25 static int abspath_part_inside_repo(char *path
)
31 const char *work_tree
= get_git_work_tree();
35 wtlen
= strlen(work_tree
);
37 off
= offset_1st_component(path
);
39 /* check if work tree is already the prefix */
40 if (wtlen
<= len
&& !strncmp(path
, work_tree
, wtlen
)) {
41 if (path
[wtlen
] == '/') {
42 memmove(path
, path
+ wtlen
+ 1, len
- wtlen
);
44 } else if (path
[wtlen
- 1] == '/' || path
[wtlen
] == '\0') {
45 /* work tree is the root, or the whole path */
46 memmove(path
, path
+ wtlen
, len
- wtlen
+ 1);
49 /* work tree might match beginning of a symlink to work tree */
55 /* check each '/'-terminated level */
60 if (strcmp(real_path(path0
), work_tree
) == 0) {
61 memmove(path0
, path
+ 1, len
- (path
- path0
));
68 /* check whole path */
69 if (strcmp(real_path(path0
), work_tree
) == 0) {
78 * Normalize "path", prepending the "prefix" for relative paths. If
79 * remaining_prefix is not NULL, return the actual prefix still
80 * remains in the path. For example, prefix = sub1/sub2/ and path is
82 * foo -> sub1/sub2/foo (full prefix)
83 * ../foo -> sub1/foo (remaining prefix is sub1/)
84 * ../../bar -> bar (no remaining prefix)
85 * ../../sub1/sub2/foo -> sub1/sub2/foo (but no remaining prefix)
86 * `pwd`/../bar -> sub1/bar (no remaining prefix)
88 char *prefix_path_gently(const char *prefix
, int len
,
89 int *remaining_prefix
, const char *path
)
91 const char *orig
= path
;
93 if (is_absolute_path(orig
)) {
94 sanitized
= xmallocz(strlen(path
));
96 *remaining_prefix
= 0;
97 if (normalize_path_copy_len(sanitized
, path
, remaining_prefix
)) {
101 if (abspath_part_inside_repo(sanitized
)) {
106 sanitized
= xstrfmt("%.*s%s", len
, prefix
, 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 */
146 name
= prefix_filename(prefix
, strlen(prefix
), arg
);
149 if (!lstat(name
, &st
))
150 return 1; /* file exists */
151 if (errno
== ENOENT
|| errno
== ENOTDIR
)
152 return 0; /* file does not exist */
153 die_errno("failed to stat '%s'", arg
);
156 static void NORETURN
die_verify_filename(const char *prefix
,
158 int diagnose_misspelt_rev
)
160 if (!diagnose_misspelt_rev
)
161 die("%s: no such path in the working tree.\n"
162 "Use 'git <command> -- <path>...' to specify paths that do not exist locally.",
165 * Saying "'(icase)foo' does not exist in the index" when the
166 * user gave us ":(icase)foo" is just stupid. A magic pathspec
167 * begins with a colon and is followed by a non-alnum; do not
168 * let maybe_die_on_misspelt_object_name() even trigger.
170 if (!(arg
[0] == ':' && !isalnum(arg
[1])))
171 maybe_die_on_misspelt_object_name(arg
, prefix
);
173 /* ... or fall back the most general message. */
174 die("ambiguous argument '%s': unknown revision or path not in the working tree.\n"
175 "Use '--' to separate paths from revisions, like this:\n"
176 "'git <command> [<revision>...] -- [<file>...]'", arg
);
181 * Verify a filename that we got as an argument for a pathspec
182 * entry. Note that a filename that begins with "-" never verifies
183 * as true, because even if such a filename were to exist, we want
184 * it to be preceded by the "--" marker (or we want the user to
185 * use a format like "./-filename")
187 * The "diagnose_misspelt_rev" is used to provide a user-friendly
188 * diagnosis when dying upon finding that "name" is not a pathname.
189 * If set to 1, the diagnosis will try to diagnose "name" as an
190 * invalid object name (e.g. HEAD:foo). If set to 0, the diagnosis
191 * will only complain about an inexisting file.
193 * This function is typically called to check that a "file or rev"
194 * argument is unambiguous. In this case, the caller will want
195 * diagnose_misspelt_rev == 1 when verifying the first non-rev
196 * argument (which could have been a revision), and
197 * diagnose_misspelt_rev == 0 for the next ones (because we already
198 * saw a filename, there's not ambiguity anymore).
200 void verify_filename(const char *prefix
,
202 int diagnose_misspelt_rev
)
205 die("bad flag '%s' used after filename", arg
);
206 if (check_filename(prefix
, arg
) || !no_wildcard(arg
))
208 die_verify_filename(prefix
, arg
, diagnose_misspelt_rev
);
212 * Opposite of the above: the command line did not have -- marker
213 * and we parsed the arg as a refname. It should not be interpretable
216 void verify_non_filename(const char *prefix
, const char *arg
)
218 if (!is_inside_work_tree() || is_inside_git_dir())
222 if (!check_filename(prefix
, arg
))
224 die("ambiguous argument '%s': both revision and filename\n"
225 "Use '--' to separate paths from revisions, like this:\n"
226 "'git <command> [<revision>...] -- [<file>...]'", arg
);
229 int get_common_dir(struct strbuf
*sb
, const char *gitdir
)
231 const char *git_env_common_dir
= getenv(GIT_COMMON_DIR_ENVIRONMENT
);
232 if (git_env_common_dir
) {
233 strbuf_addstr(sb
, git_env_common_dir
);
236 return get_common_dir_noenv(sb
, gitdir
);
240 int get_common_dir_noenv(struct strbuf
*sb
, const char *gitdir
)
242 struct strbuf data
= STRBUF_INIT
;
243 struct strbuf path
= STRBUF_INIT
;
246 strbuf_addf(&path
, "%s/commondir", gitdir
);
247 if (file_exists(path
.buf
)) {
248 if (strbuf_read_file(&data
, path
.buf
, 0) <= 0)
249 die_errno(_("failed to read %s"), path
.buf
);
250 while (data
.len
&& (data
.buf
[data
.len
- 1] == '\n' ||
251 data
.buf
[data
.len
- 1] == '\r'))
253 data
.buf
[data
.len
] = '\0';
255 if (!is_absolute_path(data
.buf
))
256 strbuf_addf(&path
, "%s/", gitdir
);
257 strbuf_addbuf(&path
, &data
);
258 strbuf_addstr(sb
, real_path(path
.buf
));
261 strbuf_addstr(sb
, gitdir
);
262 strbuf_release(&data
);
263 strbuf_release(&path
);
268 * Test if it looks like we're at a git directory.
271 * - either an objects/ directory _or_ the proper
272 * GIT_OBJECT_DIRECTORY environment variable
273 * - a refs/ directory
274 * - either a HEAD symlink or a HEAD file that is formatted as
275 * a proper "ref:", or a regular file HEAD that has a properly
276 * formatted sha1 object name.
278 int is_git_directory(const char *suspect
)
280 struct strbuf path
= STRBUF_INIT
;
284 /* Check worktree-related signatures */
285 strbuf_addf(&path
, "%s/HEAD", suspect
);
286 if (validate_headref(path
.buf
))
290 get_common_dir(&path
, suspect
);
293 /* Check non-worktree-related signatures */
294 if (getenv(DB_ENVIRONMENT
)) {
295 if (access(getenv(DB_ENVIRONMENT
), X_OK
))
299 strbuf_setlen(&path
, len
);
300 strbuf_addstr(&path
, "/objects");
301 if (access(path
.buf
, X_OK
))
305 strbuf_setlen(&path
, len
);
306 strbuf_addstr(&path
, "/refs");
307 if (access(path
.buf
, X_OK
))
312 strbuf_release(&path
);
316 int is_nonbare_repository_dir(struct strbuf
*path
)
320 size_t orig_path_len
= path
->len
;
321 assert(orig_path_len
!= 0);
322 strbuf_complete(path
, '/');
323 strbuf_addstr(path
, ".git");
324 if (read_gitfile_gently(path
->buf
, &gitfile_error
) || is_git_directory(path
->buf
))
326 if (gitfile_error
== READ_GITFILE_ERR_OPEN_FAILED
||
327 gitfile_error
== READ_GITFILE_ERR_READ_FAILED
)
329 strbuf_setlen(path
, orig_path_len
);
333 int is_inside_git_dir(void)
335 if (inside_git_dir
< 0)
336 inside_git_dir
= is_inside_dir(get_git_dir());
337 return inside_git_dir
;
340 int is_inside_work_tree(void)
342 if (inside_work_tree
< 0)
343 inside_work_tree
= is_inside_dir(get_git_work_tree());
344 return inside_work_tree
;
347 void setup_work_tree(void)
349 const char *work_tree
, *git_dir
;
350 static int initialized
= 0;
355 if (work_tree_config_is_bogus
)
356 die("unable to set up work tree using invalid config");
358 work_tree
= get_git_work_tree();
359 git_dir
= get_git_dir();
360 if (!is_absolute_path(git_dir
))
361 git_dir
= real_path(get_git_dir());
362 if (!work_tree
|| chdir(work_tree
))
363 die("This operation must be run in a work tree");
366 * Make sure subsequent git processes find correct worktree
367 * if $GIT_WORK_TREE is set relative
369 if (getenv(GIT_WORK_TREE_ENVIRONMENT
))
370 setenv(GIT_WORK_TREE_ENVIRONMENT
, ".", 1);
372 set_git_dir(remove_leading_path(git_dir
, work_tree
));
376 static int check_repo_format(const char *var
, const char *value
, void *cb
)
380 if (strcmp(var
, "core.repositoryformatversion") == 0)
381 repository_format_version
= git_config_int(var
, value
);
382 else if (strcmp(var
, "core.sharedrepository") == 0)
383 shared_repository
= git_config_perm(var
, value
);
384 else if (skip_prefix(var
, "extensions.", &ext
)) {
386 * record any known extensions here; otherwise,
387 * we fall through to recording it as unknown, and
388 * check_repository_format will complain
390 if (!strcmp(ext
, "noop"))
392 else if (!strcmp(ext
, "preciousobjects"))
393 repository_format_precious_objects
= git_config_bool(var
, value
);
395 string_list_append(&unknown_extensions
, ext
);
400 static int check_repository_format_gently(const char *gitdir
, int *nongit_ok
)
402 struct strbuf sb
= STRBUF_INIT
;
403 const char *repo_config
;
407 string_list_clear(&unknown_extensions
, 0);
409 if (get_common_dir(&sb
, gitdir
))
410 fn
= check_repo_format
;
412 fn
= check_repository_format_version
;
413 strbuf_addstr(&sb
, "/config");
414 repo_config
= sb
.buf
;
417 * git_config() can't be used here because it calls git_pathdup()
418 * to get $GIT_CONFIG/config. That call will make setup_git_env()
419 * set git_dir to ".git".
421 * We are in gitdir setup, no git dir has been found useable yet.
422 * Use a gentler version of git_config() to check if this repo
425 git_config_early(fn
, NULL
, repo_config
);
426 if (GIT_REPO_VERSION_READ
< repository_format_version
) {
428 die ("Expected git repo version <= %d, found %d",
429 GIT_REPO_VERSION_READ
, repository_format_version
);
430 warning("Expected git repo version <= %d, found %d",
431 GIT_REPO_VERSION_READ
, repository_format_version
);
432 warning("Please upgrade Git");
437 if (repository_format_version
>= 1 && unknown_extensions
.nr
) {
441 die("unknown repository extension: %s",
442 unknown_extensions
.items
[0].string
);
444 for (i
= 0; i
< unknown_extensions
.nr
; i
++)
445 warning("unknown repository extension: %s",
446 unknown_extensions
.items
[i
].string
);
456 * Try to read the location of the git directory from the .git file,
457 * return path to git directory if found.
459 * On failure, if return_error_code is not NULL, return_error_code
460 * will be set to an error code and NULL will be returned. If
461 * return_error_code is NULL the function will die instead (for most
464 const char *read_gitfile_gently(const char *path
, int *return_error_code
)
466 const int max_file_size
= 1 << 20; /* 1MB */
475 if (stat(path
, &st
)) {
476 error_code
= READ_GITFILE_ERR_STAT_FAILED
;
479 if (!S_ISREG(st
.st_mode
)) {
480 error_code
= READ_GITFILE_ERR_NOT_A_FILE
;
483 if (st
.st_size
> max_file_size
) {
484 error_code
= READ_GITFILE_ERR_TOO_LARGE
;
487 fd
= open(path
, O_RDONLY
);
489 error_code
= READ_GITFILE_ERR_OPEN_FAILED
;
492 buf
= xmallocz(st
.st_size
);
493 len
= read_in_full(fd
, buf
, st
.st_size
);
495 if (len
!= st
.st_size
) {
496 error_code
= READ_GITFILE_ERR_READ_FAILED
;
499 if (!starts_with(buf
, "gitdir: ")) {
500 error_code
= READ_GITFILE_ERR_INVALID_FORMAT
;
503 while (buf
[len
- 1] == '\n' || buf
[len
- 1] == '\r')
506 error_code
= READ_GITFILE_ERR_NO_PATH
;
512 if (!is_absolute_path(dir
) && (slash
= strrchr(path
, '/'))) {
513 size_t pathlen
= slash
+1 - path
;
514 dir
= xstrfmt("%.*s%.*s", (int)pathlen
, path
,
515 (int)(len
- 8), buf
+ 8);
519 if (!is_git_directory(dir
)) {
520 error_code
= READ_GITFILE_ERR_NOT_A_REPO
;
523 path
= real_path(dir
);
526 if (return_error_code
)
527 *return_error_code
= error_code
;
528 else if (error_code
) {
529 switch (error_code
) {
530 case READ_GITFILE_ERR_STAT_FAILED
:
531 case READ_GITFILE_ERR_NOT_A_FILE
:
532 /* non-fatal; follow return path */
534 case READ_GITFILE_ERR_OPEN_FAILED
:
535 die_errno("Error opening '%s'", path
);
536 case READ_GITFILE_ERR_TOO_LARGE
:
537 die("Too large to be a .git file: '%s'", path
);
538 case READ_GITFILE_ERR_READ_FAILED
:
539 die("Error reading %s", path
);
540 case READ_GITFILE_ERR_INVALID_FORMAT
:
541 die("Invalid gitfile format: %s", path
);
542 case READ_GITFILE_ERR_NO_PATH
:
543 die("No path in gitfile: %s", path
);
544 case READ_GITFILE_ERR_NOT_A_REPO
:
545 die("Not a git repository: %s", dir
);
552 return error_code
? NULL
: path
;
555 static const char *setup_explicit_git_dir(const char *gitdirenv
,
559 const char *work_tree_env
= getenv(GIT_WORK_TREE_ENVIRONMENT
);
560 const char *worktree
;
564 if (PATH_MAX
- 40 < strlen(gitdirenv
))
565 die("'$%s' too big", GIT_DIR_ENVIRONMENT
);
567 gitfile
= (char*)read_gitfile(gitdirenv
);
569 gitfile
= xstrdup(gitfile
);
573 if (!is_git_directory(gitdirenv
)) {
579 die("Not a git repository: '%s'", gitdirenv
);
582 if (check_repository_format_gently(gitdirenv
, nongit_ok
)) {
587 /* #3, #7, #11, #15, #19, #23, #27, #31 (see t1510) */
589 set_git_work_tree(work_tree_env
);
590 else if (is_bare_repository_cfg
> 0) {
591 if (git_work_tree_cfg
) {
593 warning("core.bare and core.worktree do not make sense");
594 work_tree_config_is_bogus
= 1;
598 set_git_dir(gitdirenv
);
602 else if (git_work_tree_cfg
) { /* #6, #14 */
603 if (is_absolute_path(git_work_tree_cfg
))
604 set_git_work_tree(git_work_tree_cfg
);
607 if (chdir(gitdirenv
))
608 die_errno("Could not chdir to '%s'", gitdirenv
);
609 if (chdir(git_work_tree_cfg
))
610 die_errno("Could not chdir to '%s'", git_work_tree_cfg
);
611 core_worktree
= xgetcwd();
613 die_errno("Could not come back to cwd");
614 set_git_work_tree(core_worktree
);
618 else if (!git_env_bool(GIT_IMPLICIT_WORK_TREE_ENVIRONMENT
, 1)) {
620 set_git_dir(gitdirenv
);
625 set_git_work_tree(".");
627 /* set_git_work_tree() must have been called by now */
628 worktree
= get_git_work_tree();
630 /* both get_git_work_tree() and cwd are already normalized */
631 if (!strcmp(cwd
->buf
, worktree
)) { /* cwd == worktree */
632 set_git_dir(gitdirenv
);
637 offset
= dir_inside_of(cwd
->buf
, worktree
);
638 if (offset
>= 0) { /* cwd inside worktree? */
639 set_git_dir(real_path(gitdirenv
));
641 die_errno("Could not chdir to '%s'", worktree
);
642 strbuf_addch(cwd
, '/');
644 return cwd
->buf
+ offset
;
647 /* cwd outside worktree */
648 set_git_dir(gitdirenv
);
653 static const char *setup_discovered_git_dir(const char *gitdir
,
654 struct strbuf
*cwd
, int offset
,
657 if (check_repository_format_gently(gitdir
, nongit_ok
))
660 /* --work-tree is set without --git-dir; use discovered one */
661 if (getenv(GIT_WORK_TREE_ENVIRONMENT
) || git_work_tree_cfg
) {
662 if (offset
!= cwd
->len
&& !is_absolute_path(gitdir
))
663 gitdir
= xstrdup(real_path(gitdir
));
665 die_errno("Could not come back to cwd");
666 return setup_explicit_git_dir(gitdir
, cwd
, nongit_ok
);
669 /* #16.2, #17.2, #20.2, #21.2, #24, #25, #28, #29 (see t1510) */
670 if (is_bare_repository_cfg
> 0) {
671 set_git_dir(offset
== cwd
->len
? gitdir
: real_path(gitdir
));
673 die_errno("Could not come back to cwd");
677 /* #0, #1, #5, #8, #9, #12, #13 */
678 set_git_work_tree(".");
679 if (strcmp(gitdir
, DEFAULT_GIT_DIR_ENVIRONMENT
))
682 inside_work_tree
= 1;
683 if (offset
== cwd
->len
)
686 /* Make "offset" point to past the '/', and add a '/' at the end */
688 strbuf_addch(cwd
, '/');
689 return cwd
->buf
+ offset
;
692 /* #16.1, #17.1, #20.1, #21.1, #22.1 (see t1510) */
693 static const char *setup_bare_git_dir(struct strbuf
*cwd
, int offset
,
698 if (check_repository_format_gently(".", nongit_ok
))
701 setenv(GIT_IMPLICIT_WORK_TREE_ENVIRONMENT
, "0", 1);
703 /* --work-tree is set without --git-dir; use discovered one */
704 if (getenv(GIT_WORK_TREE_ENVIRONMENT
) || git_work_tree_cfg
) {
707 gitdir
= offset
== cwd
->len
? "." : xmemdupz(cwd
->buf
, offset
);
709 die_errno("Could not come back to cwd");
710 return setup_explicit_git_dir(gitdir
, cwd
, nongit_ok
);
714 inside_work_tree
= 0;
715 if (offset
!= cwd
->len
) {
717 die_errno("Cannot come back to cwd");
718 root_len
= offset_1st_component(cwd
->buf
);
719 strbuf_setlen(cwd
, offset
> root_len
? offset
: root_len
);
720 set_git_dir(cwd
->buf
);
727 static const char *setup_nongit(const char *cwd
, int *nongit_ok
)
730 die("Not a git repository (or any of the parent directories): %s", DEFAULT_GIT_DIR_ENVIRONMENT
);
732 die_errno("Cannot come back to cwd");
737 static dev_t
get_device_or_die(const char *path
, const char *prefix
, int prefix_len
)
740 if (stat(path
, &buf
)) {
741 die_errno("failed to stat '%*s%s%s'",
743 prefix
? prefix
: "",
744 prefix
? "/" : "", path
);
750 * A "string_list_each_func_t" function that canonicalizes an entry
751 * from GIT_CEILING_DIRECTORIES using real_path_if_valid(), or
752 * discards it if unusable. The presence of an empty entry in
753 * GIT_CEILING_DIRECTORIES turns off canonicalization for all
754 * subsequent entries.
756 static int canonicalize_ceiling_entry(struct string_list_item
*item
,
759 int *empty_entry_found
= cb_data
;
760 char *ceil
= item
->string
;
763 *empty_entry_found
= 1;
765 } else if (!is_absolute_path(ceil
)) {
767 } else if (*empty_entry_found
) {
768 /* Keep entry but do not canonicalize it */
771 const char *real_path
= real_path_if_valid(ceil
);
775 item
->string
= xstrdup(real_path
);
781 * We cannot decide in this function whether we are in the work tree or
782 * not, since the config can only be read _after_ this function was called.
784 static const char *setup_git_directory_gently_1(int *nongit_ok
)
786 const char *env_ceiling_dirs
= getenv(CEILING_DIRECTORIES_ENVIRONMENT
);
787 struct string_list ceiling_dirs
= STRING_LIST_INIT_DUP
;
788 static struct strbuf cwd
= STRBUF_INIT
;
789 const char *gitdirenv
, *ret
;
791 int offset
, offset_parent
, ceil_offset
= -1;
792 dev_t current_device
= 0;
793 int one_filesystem
= 1;
796 * We may have read an incomplete configuration before
797 * setting-up the git directory. If so, clear the cache so
798 * that the next queries to the configuration reload complete
799 * configuration (including the per-repo config file that we
800 * ignored previously).
805 * Let's assume that we are in a git repository.
806 * If it turns out later that we are somewhere else, the value will be
807 * updated accordingly.
812 if (strbuf_getcwd(&cwd
))
813 die_errno("Unable to read current working directory");
817 * If GIT_DIR is set explicitly, we're not going
818 * to do any discovery, but we still do repository
821 gitdirenv
= getenv(GIT_DIR_ENVIRONMENT
);
823 return setup_explicit_git_dir(gitdirenv
, &cwd
, nongit_ok
);
825 if (env_ceiling_dirs
) {
826 int empty_entry_found
= 0;
828 string_list_split(&ceiling_dirs
, env_ceiling_dirs
, PATH_SEP
, -1);
829 filter_string_list(&ceiling_dirs
, 0,
830 canonicalize_ceiling_entry
, &empty_entry_found
);
831 ceil_offset
= longest_ancestor_length(cwd
.buf
, &ceiling_dirs
);
832 string_list_clear(&ceiling_dirs
, 0);
835 if (ceil_offset
< 0 && has_dos_drive_prefix(cwd
.buf
))
839 * Test in the following order (relative to the cwd):
840 * - .git (file containing "gitdir: <path>")
849 one_filesystem
= !git_env_bool("GIT_DISCOVERY_ACROSS_FILESYSTEM", 0);
851 current_device
= get_device_or_die(".", NULL
, 0);
853 gitfile
= (char*)read_gitfile(DEFAULT_GIT_DIR_ENVIRONMENT
);
855 gitdirenv
= gitfile
= xstrdup(gitfile
);
857 if (is_git_directory(DEFAULT_GIT_DIR_ENVIRONMENT
))
858 gitdirenv
= DEFAULT_GIT_DIR_ENVIRONMENT
;
862 ret
= setup_discovered_git_dir(gitdirenv
,
870 if (is_git_directory("."))
871 return setup_bare_git_dir(&cwd
, offset
, nongit_ok
);
873 offset_parent
= offset
;
874 while (--offset_parent
> ceil_offset
&& cwd
.buf
[offset_parent
] != '/');
875 if (offset_parent
<= ceil_offset
)
876 return setup_nongit(cwd
.buf
, nongit_ok
);
877 if (one_filesystem
) {
878 dev_t parent_device
= get_device_or_die("..", cwd
.buf
,
880 if (parent_device
!= current_device
) {
883 die_errno("Cannot come back to cwd");
887 strbuf_setlen(&cwd
, offset
);
888 die("Not a git repository (or any parent up to mount point %s)\n"
889 "Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set).",
894 strbuf_setlen(&cwd
, offset
);
895 die_errno("Cannot change to '%s/..'", cwd
.buf
);
897 offset
= offset_parent
;
901 const char *setup_git_directory_gently(int *nongit_ok
)
905 prefix
= setup_git_directory_gently_1(nongit_ok
);
907 setenv(GIT_PREFIX_ENVIRONMENT
, prefix
, 1);
909 setenv(GIT_PREFIX_ENVIRONMENT
, "", 1);
911 startup_info
->have_repository
= !nongit_ok
|| !*nongit_ok
;
912 startup_info
->prefix
= prefix
;
917 int git_config_perm(const char *var
, const char *value
)
925 if (!strcmp(value
, "umask"))
927 if (!strcmp(value
, "group"))
929 if (!strcmp(value
, "all") ||
930 !strcmp(value
, "world") ||
931 !strcmp(value
, "everybody"))
932 return PERM_EVERYBODY
;
934 /* Parse octal numbers */
935 i
= strtol(value
, &endptr
, 8);
937 /* If not an octal number, maybe true/false? */
939 return git_config_bool(var
, value
) ? PERM_GROUP
: PERM_UMASK
;
942 * Treat values 0, 1 and 2 as compatibility cases, otherwise it is
943 * a chmod value to restrict to.
946 case PERM_UMASK
: /* 0 */
948 case OLD_PERM_GROUP
: /* 1 */
950 case OLD_PERM_EVERYBODY
: /* 2 */
951 return PERM_EVERYBODY
;
954 /* A filemode value was given: 0xxx */
956 if ((i
& 0600) != 0600)
957 die("Problem with core.sharedRepository filemode value "
958 "(0%.3o).\nThe owner of files must always have "
959 "read and write permissions.", i
);
962 * Mask filemode value. Others can not get write permission.
963 * x flags for directories are handled separately.
968 int check_repository_format_version(const char *var
, const char *value
, void *cb
)
970 int ret
= check_repo_format(var
, value
, cb
);
973 if (strcmp(var
, "core.bare") == 0) {
974 is_bare_repository_cfg
= git_config_bool(var
, value
);
975 if (is_bare_repository_cfg
== 1)
976 inside_work_tree
= -1;
977 } else if (strcmp(var
, "core.worktree") == 0) {
979 return config_error_nonbool(var
);
980 free(git_work_tree_cfg
);
981 git_work_tree_cfg
= xstrdup(value
);
982 inside_work_tree
= -1;
987 int check_repository_format(void)
989 return check_repository_format_gently(get_git_dir(), NULL
);
993 * Returns the "prefix", a path to the current working directory
994 * relative to the work tree root, or NULL, if the current working
995 * directory is not a strict subdirectory of the work tree root. The
996 * prefix always ends with a '/' character.
998 const char *setup_git_directory(void)
1000 return setup_git_directory_gently(NULL
);
1003 const char *resolve_gitdir(const char *suspect
)
1005 if (is_git_directory(suspect
))
1007 return read_gitfile(suspect
);
1010 /* if any standard file descriptor is missing open it to /dev/null */
1011 void sanitize_stdfds(void)
1013 int fd
= open("/dev/null", O_RDWR
, 0);
1014 while (fd
!= -1 && fd
< 2)
1017 die_errno("open /dev/null or dup failed");
1024 #ifdef NO_POSIX_GOODIES
1032 die_errno("fork failed");
1037 die_errno("setsid failed");