1 #include "git-compat-util.h"
3 #include "environment.h"
5 #include "object-name.h"
6 #include "repository.h"
10 #include "string-list.h"
11 #include "chdir-notify.h"
12 #include "promisor-remote.h"
16 static int inside_git_dir
= -1;
17 static int inside_work_tree
= -1;
18 static int work_tree_config_is_bogus
;
19 enum allowed_bare_repo
{
20 ALLOWED_BARE_REPO_EXPLICIT
= 0,
21 ALLOWED_BARE_REPO_ALL
,
24 static struct startup_info the_startup_info
;
25 struct startup_info
*startup_info
= &the_startup_info
;
26 const char *tmp_original_cwd
;
29 * The input parameter must contain an absolute path, and it must already be
32 * Find the part of an absolute path that lies inside the work tree by
33 * dereferencing symlinks outside the work tree, for example:
34 * /dir1/repo/dir2/file (work tree is /dir1/repo) -> dir2/file
35 * /dir/file (work tree is /) -> dir/file
36 * /dir/symlink1/symlink2 (symlink1 points to work tree) -> symlink2
37 * /dir/repolink/file (repolink points to /dir/repo) -> file
38 * /dir/repo (exactly equal to work tree) -> (empty string)
40 static int abspath_part_inside_repo(char *path
)
46 const char *work_tree
= get_git_work_tree();
47 struct strbuf realpath
= STRBUF_INIT
;
51 wtlen
= strlen(work_tree
);
53 off
= offset_1st_component(path
);
55 /* check if work tree is already the prefix */
56 if (wtlen
<= len
&& !fspathncmp(path
, work_tree
, wtlen
)) {
57 if (path
[wtlen
] == '/') {
58 memmove(path
, path
+ wtlen
+ 1, len
- wtlen
);
60 } else if (path
[wtlen
- 1] == '/' || path
[wtlen
] == '\0') {
61 /* work tree is the root, or the whole path */
62 memmove(path
, path
+ wtlen
, len
- wtlen
+ 1);
65 /* work tree might match beginning of a symlink to work tree */
71 /* check each '/'-terminated level */
76 strbuf_realpath(&realpath
, path0
, 1);
77 if (fspathcmp(realpath
.buf
, work_tree
) == 0) {
78 memmove(path0
, path
+ 1, len
- (path
- path0
));
79 strbuf_release(&realpath
);
86 /* check whole path */
87 strbuf_realpath(&realpath
, path0
, 1);
88 if (fspathcmp(realpath
.buf
, work_tree
) == 0) {
90 strbuf_release(&realpath
);
94 strbuf_release(&realpath
);
99 * Normalize "path", prepending the "prefix" for relative paths. If
100 * remaining_prefix is not NULL, return the actual prefix still
101 * remains in the path. For example, prefix = sub1/sub2/ and path is
103 * foo -> sub1/sub2/foo (full prefix)
104 * ../foo -> sub1/foo (remaining prefix is sub1/)
105 * ../../bar -> bar (no remaining prefix)
106 * ../../sub1/sub2/foo -> sub1/sub2/foo (but no remaining prefix)
107 * `pwd`/../bar -> sub1/bar (no remaining prefix)
109 char *prefix_path_gently(const char *prefix
, int len
,
110 int *remaining_prefix
, const char *path
)
112 const char *orig
= path
;
114 if (is_absolute_path(orig
)) {
115 sanitized
= xmallocz(strlen(path
));
116 if (remaining_prefix
)
117 *remaining_prefix
= 0;
118 if (normalize_path_copy_len(sanitized
, path
, remaining_prefix
)) {
122 if (abspath_part_inside_repo(sanitized
)) {
127 sanitized
= xstrfmt("%.*s%s", len
, len
? prefix
: "", path
);
128 if (remaining_prefix
)
129 *remaining_prefix
= len
;
130 if (normalize_path_copy_len(sanitized
, sanitized
, remaining_prefix
)) {
138 char *prefix_path(const char *prefix
, int len
, const char *path
)
140 char *r
= prefix_path_gently(prefix
, len
, NULL
, path
);
142 const char *hint_path
= get_git_work_tree();
144 hint_path
= get_git_dir();
145 die(_("'%s' is outside repository at '%s'"), path
,
146 absolute_path(hint_path
));
151 int path_inside_repo(const char *prefix
, const char *path
)
153 int len
= prefix
? strlen(prefix
) : 0;
154 char *r
= prefix_path_gently(prefix
, len
, NULL
, path
);
162 int check_filename(const char *prefix
, const char *arg
)
164 char *to_free
= NULL
;
167 if (skip_prefix(arg
, ":/", &arg
)) {
168 if (!*arg
) /* ":/" is root dir, always exists */
171 } else if (skip_prefix(arg
, ":!", &arg
) ||
172 skip_prefix(arg
, ":^", &arg
)) {
173 if (!*arg
) /* excluding everything is silly, but allowed */
178 arg
= to_free
= prefix_filename(prefix
, arg
);
180 if (!lstat(arg
, &st
)) {
182 return 1; /* file exists */
184 if (is_missing_file_error(errno
)) {
186 return 0; /* file does not exist */
188 die_errno(_("failed to stat '%s'"), arg
);
191 static void NORETURN
die_verify_filename(struct repository
*r
,
194 int diagnose_misspelt_rev
)
196 if (!diagnose_misspelt_rev
)
197 die(_("%s: no such path in the working tree.\n"
198 "Use 'git <command> -- <path>...' to specify paths that do not exist locally."),
201 * Saying "'(icase)foo' does not exist in the index" when the
202 * user gave us ":(icase)foo" is just stupid. A magic pathspec
203 * begins with a colon and is followed by a non-alnum; do not
204 * let maybe_die_on_misspelt_object_name() even trigger.
206 if (!(arg
[0] == ':' && !isalnum(arg
[1])))
207 maybe_die_on_misspelt_object_name(r
, arg
, prefix
);
209 /* ... or fall back the most general message. */
210 die(_("ambiguous argument '%s': unknown revision or path not in the working tree.\n"
211 "Use '--' to separate paths from revisions, like this:\n"
212 "'git <command> [<revision>...] -- [<file>...]'"), arg
);
217 * Check for arguments that don't resolve as actual files,
218 * but which look sufficiently like pathspecs that we'll consider
219 * them such for the purposes of rev/pathspec DWIM parsing.
221 static int looks_like_pathspec(const char *arg
)
227 * Wildcard characters imply the user is looking to match pathspecs
228 * that aren't in the filesystem. Note that this doesn't include
229 * backslash even though it's a glob special; by itself it doesn't
230 * cause any increase in the match. Likewise ignore backslash-escaped
231 * wildcard characters.
233 for (p
= arg
; *p
; p
++) {
236 } else if (is_glob_special(*p
)) {
244 /* long-form pathspec magic */
245 if (starts_with(arg
, ":("))
252 * Verify a filename that we got as an argument for a pathspec
253 * entry. Note that a filename that begins with "-" never verifies
254 * as true, because even if such a filename were to exist, we want
255 * it to be preceded by the "--" marker (or we want the user to
256 * use a format like "./-filename")
258 * The "diagnose_misspelt_rev" is used to provide a user-friendly
259 * diagnosis when dying upon finding that "name" is not a pathname.
260 * If set to 1, the diagnosis will try to diagnose "name" as an
261 * invalid object name (e.g. HEAD:foo). If set to 0, the diagnosis
262 * will only complain about an inexisting file.
264 * This function is typically called to check that a "file or rev"
265 * argument is unambiguous. In this case, the caller will want
266 * diagnose_misspelt_rev == 1 when verifying the first non-rev
267 * argument (which could have been a revision), and
268 * diagnose_misspelt_rev == 0 for the next ones (because we already
269 * saw a filename, there's not ambiguity anymore).
271 void verify_filename(const char *prefix
,
273 int diagnose_misspelt_rev
)
276 die(_("option '%s' must come before non-option arguments"), arg
);
277 if (looks_like_pathspec(arg
) || check_filename(prefix
, arg
))
279 die_verify_filename(the_repository
, prefix
, arg
, diagnose_misspelt_rev
);
283 * Opposite of the above: the command line did not have -- marker
284 * and we parsed the arg as a refname. It should not be interpretable
287 void verify_non_filename(const char *prefix
, const char *arg
)
289 if (!is_inside_work_tree() || is_inside_git_dir())
293 if (!check_filename(prefix
, arg
))
295 die(_("ambiguous argument '%s': both revision and filename\n"
296 "Use '--' to separate paths from revisions, like this:\n"
297 "'git <command> [<revision>...] -- [<file>...]'"), arg
);
300 int get_common_dir(struct strbuf
*sb
, const char *gitdir
)
302 const char *git_env_common_dir
= getenv(GIT_COMMON_DIR_ENVIRONMENT
);
303 if (git_env_common_dir
) {
304 strbuf_addstr(sb
, git_env_common_dir
);
307 return get_common_dir_noenv(sb
, gitdir
);
311 int get_common_dir_noenv(struct strbuf
*sb
, const char *gitdir
)
313 struct strbuf data
= STRBUF_INIT
;
314 struct strbuf path
= STRBUF_INIT
;
317 strbuf_addf(&path
, "%s/commondir", gitdir
);
318 if (file_exists(path
.buf
)) {
319 if (strbuf_read_file(&data
, path
.buf
, 0) <= 0)
320 die_errno(_("failed to read %s"), path
.buf
);
321 while (data
.len
&& (data
.buf
[data
.len
- 1] == '\n' ||
322 data
.buf
[data
.len
- 1] == '\r'))
324 data
.buf
[data
.len
] = '\0';
326 if (!is_absolute_path(data
.buf
))
327 strbuf_addf(&path
, "%s/", gitdir
);
328 strbuf_addbuf(&path
, &data
);
329 strbuf_add_real_path(sb
, path
.buf
);
332 strbuf_addstr(sb
, gitdir
);
335 strbuf_release(&data
);
336 strbuf_release(&path
);
341 * Test if it looks like we're at a git directory.
344 * - either an objects/ directory _or_ the proper
345 * GIT_OBJECT_DIRECTORY environment variable
346 * - a refs/ directory
347 * - either a HEAD symlink or a HEAD file that is formatted as
348 * a proper "ref:", or a regular file HEAD that has a properly
349 * formatted sha1 object name.
351 int is_git_directory(const char *suspect
)
353 struct strbuf path
= STRBUF_INIT
;
357 /* Check worktree-related signatures */
358 strbuf_addstr(&path
, suspect
);
359 strbuf_complete(&path
, '/');
360 strbuf_addstr(&path
, "HEAD");
361 if (validate_headref(path
.buf
))
365 get_common_dir(&path
, suspect
);
368 /* Check non-worktree-related signatures */
369 if (getenv(DB_ENVIRONMENT
)) {
370 if (access(getenv(DB_ENVIRONMENT
), X_OK
))
374 strbuf_setlen(&path
, len
);
375 strbuf_addstr(&path
, "/objects");
376 if (access(path
.buf
, X_OK
))
380 strbuf_setlen(&path
, len
);
381 strbuf_addstr(&path
, "/refs");
382 if (access(path
.buf
, X_OK
))
387 strbuf_release(&path
);
391 int is_nonbare_repository_dir(struct strbuf
*path
)
395 size_t orig_path_len
= path
->len
;
396 assert(orig_path_len
!= 0);
397 strbuf_complete(path
, '/');
398 strbuf_addstr(path
, ".git");
399 if (read_gitfile_gently(path
->buf
, &gitfile_error
) || is_git_directory(path
->buf
))
401 if (gitfile_error
== READ_GITFILE_ERR_OPEN_FAILED
||
402 gitfile_error
== READ_GITFILE_ERR_READ_FAILED
)
404 strbuf_setlen(path
, orig_path_len
);
408 int is_inside_git_dir(void)
410 if (inside_git_dir
< 0)
411 inside_git_dir
= is_inside_dir(get_git_dir());
412 return inside_git_dir
;
415 int is_inside_work_tree(void)
417 if (inside_work_tree
< 0)
418 inside_work_tree
= is_inside_dir(get_git_work_tree());
419 return inside_work_tree
;
422 void setup_work_tree(void)
424 const char *work_tree
;
425 static int initialized
= 0;
430 if (work_tree_config_is_bogus
)
431 die(_("unable to set up work tree using invalid config"));
433 work_tree
= get_git_work_tree();
434 if (!work_tree
|| chdir_notify(work_tree
))
435 die(_("this operation must be run in a work tree"));
438 * Make sure subsequent git processes find correct worktree
439 * if $GIT_WORK_TREE is set relative
441 if (getenv(GIT_WORK_TREE_ENVIRONMENT
))
442 setenv(GIT_WORK_TREE_ENVIRONMENT
, ".", 1);
447 static void setup_original_cwd(void)
449 struct strbuf tmp
= STRBUF_INIT
;
450 const char *worktree
= NULL
;
453 if (!tmp_original_cwd
)
457 * startup_info->original_cwd points to the current working
458 * directory we inherited from our parent process, which is a
459 * directory we want to avoid removing.
461 * For convience, we would like to have the path relative to the
462 * worktree instead of an absolute path.
464 * Yes, startup_info->original_cwd is usually the same as 'prefix',
465 * but differs in two ways:
466 * - prefix has a trailing '/'
467 * - if the user passes '-C' to git, that modifies the prefix but
468 * not startup_info->original_cwd.
471 /* Normalize the directory */
472 if (!strbuf_realpath(&tmp
, tmp_original_cwd
, 0)) {
473 trace2_data_string("setup", the_repository
,
474 "realpath-path", tmp_original_cwd
);
475 trace2_data_string("setup", the_repository
,
476 "realpath-failure", strerror(errno
));
477 free((char*)tmp_original_cwd
);
478 tmp_original_cwd
= NULL
;
482 free((char*)tmp_original_cwd
);
483 tmp_original_cwd
= NULL
;
484 startup_info
->original_cwd
= strbuf_detach(&tmp
, NULL
);
487 * Get our worktree; we only protect the current working directory
488 * if it's in the worktree.
490 worktree
= get_git_work_tree();
492 goto no_prevention_needed
;
494 offset
= dir_inside_of(startup_info
->original_cwd
, worktree
);
497 * If startup_info->original_cwd == worktree, that is already
498 * protected and we don't need original_cwd as a secondary
499 * protection measure.
501 if (!*(startup_info
->original_cwd
+ offset
))
502 goto no_prevention_needed
;
505 * original_cwd was inside worktree; precompose it just as
506 * we do prefix so that built up paths will match
508 startup_info
->original_cwd
= \
509 precompose_string_if_needed(startup_info
->original_cwd
514 no_prevention_needed
:
515 free((char*)startup_info
->original_cwd
);
516 startup_info
->original_cwd
= NULL
;
519 static int read_worktree_config(const char *var
, const char *value
, void *vdata
)
521 struct repository_format
*data
= vdata
;
523 if (strcmp(var
, "core.bare") == 0) {
524 data
->is_bare
= git_config_bool(var
, value
);
525 } else if (strcmp(var
, "core.worktree") == 0) {
527 return config_error_nonbool(var
);
528 free(data
->work_tree
);
529 data
->work_tree
= xstrdup(value
);
534 enum extension_result
{
535 EXTENSION_ERROR
= -1, /* compatible with error(), etc */
536 EXTENSION_UNKNOWN
= 0,
541 * Do not add new extensions to this function. It handles extensions which are
542 * respected even in v0-format repositories for historical compatibility.
544 static enum extension_result
handle_extension_v0(const char *var
,
547 struct repository_format
*data
)
549 if (!strcmp(ext
, "noop")) {
551 } else if (!strcmp(ext
, "preciousobjects")) {
552 data
->precious_objects
= git_config_bool(var
, value
);
554 } else if (!strcmp(ext
, "partialclone")) {
555 data
->partial_clone
= xstrdup(value
);
557 } else if (!strcmp(ext
, "worktreeconfig")) {
558 data
->worktree_config
= git_config_bool(var
, value
);
562 return EXTENSION_UNKNOWN
;
566 * Record any new extensions in this function.
568 static enum extension_result
handle_extension(const char *var
,
571 struct repository_format
*data
)
573 if (!strcmp(ext
, "noop-v1")) {
575 } else if (!strcmp(ext
, "objectformat")) {
579 return config_error_nonbool(var
);
580 format
= hash_algo_by_name(value
);
581 if (format
== GIT_HASH_UNKNOWN
)
582 return error(_("invalid value for '%s': '%s'"),
583 "extensions.objectformat", value
);
584 data
->hash_algo
= format
;
587 return EXTENSION_UNKNOWN
;
590 static int check_repo_format(const char *var
, const char *value
, void *vdata
)
592 struct repository_format
*data
= vdata
;
595 if (strcmp(var
, "core.repositoryformatversion") == 0)
596 data
->version
= git_config_int(var
, value
);
597 else if (skip_prefix(var
, "extensions.", &ext
)) {
598 switch (handle_extension_v0(var
, value
, ext
, data
)) {
599 case EXTENSION_ERROR
:
603 case EXTENSION_UNKNOWN
:
607 switch (handle_extension(var
, value
, ext
, data
)) {
608 case EXTENSION_ERROR
:
611 string_list_append(&data
->v1_only_extensions
, ext
);
613 case EXTENSION_UNKNOWN
:
614 string_list_append(&data
->unknown_extensions
, ext
);
619 return read_worktree_config(var
, value
, vdata
);
622 static int check_repository_format_gently(const char *gitdir
, struct repository_format
*candidate
, int *nongit_ok
)
624 struct strbuf sb
= STRBUF_INIT
;
625 struct strbuf err
= STRBUF_INIT
;
628 has_common
= get_common_dir(&sb
, gitdir
);
629 strbuf_addstr(&sb
, "/config");
630 read_repository_format(candidate
, sb
.buf
);
634 * For historical use of check_repository_format() in git-init,
635 * we treat a missing config as a silent "ok", even when nongit_ok
638 if (candidate
->version
< 0)
641 if (verify_repository_format(candidate
, &err
) < 0) {
643 warning("%s", err
.buf
);
644 strbuf_release(&err
);
651 repository_format_precious_objects
= candidate
->precious_objects
;
652 repository_format_worktree_config
= candidate
->worktree_config
;
653 string_list_clear(&candidate
->unknown_extensions
, 0);
654 string_list_clear(&candidate
->v1_only_extensions
, 0);
656 if (repository_format_worktree_config
) {
658 * pick up core.bare and core.worktree from per-worktree
661 strbuf_addf(&sb
, "%s/config.worktree", gitdir
);
662 git_config_from_file(read_worktree_config
, sb
.buf
, candidate
);
668 if (candidate
->is_bare
!= -1) {
669 is_bare_repository_cfg
= candidate
->is_bare
;
670 if (is_bare_repository_cfg
== 1)
671 inside_work_tree
= -1;
673 if (candidate
->work_tree
) {
674 free(git_work_tree_cfg
);
675 git_work_tree_cfg
= xstrdup(candidate
->work_tree
);
676 inside_work_tree
= -1;
683 int upgrade_repository_format(int target_version
)
685 struct strbuf sb
= STRBUF_INIT
;
686 struct strbuf err
= STRBUF_INIT
;
687 struct strbuf repo_version
= STRBUF_INIT
;
688 struct repository_format repo_fmt
= REPOSITORY_FORMAT_INIT
;
690 strbuf_git_common_path(&sb
, the_repository
, "config");
691 read_repository_format(&repo_fmt
, sb
.buf
);
694 if (repo_fmt
.version
>= target_version
)
697 if (verify_repository_format(&repo_fmt
, &err
) < 0) {
698 error("cannot upgrade repository format from %d to %d: %s",
699 repo_fmt
.version
, target_version
, err
.buf
);
700 strbuf_release(&err
);
703 if (!repo_fmt
.version
&& repo_fmt
.unknown_extensions
.nr
)
704 return error("cannot upgrade repository format: "
705 "unknown extension %s",
706 repo_fmt
.unknown_extensions
.items
[0].string
);
708 strbuf_addf(&repo_version
, "%d", target_version
);
709 git_config_set("core.repositoryformatversion", repo_version
.buf
);
710 strbuf_release(&repo_version
);
714 static void init_repository_format(struct repository_format
*format
)
716 const struct repository_format fresh
= REPOSITORY_FORMAT_INIT
;
718 memcpy(format
, &fresh
, sizeof(fresh
));
721 int read_repository_format(struct repository_format
*format
, const char *path
)
723 clear_repository_format(format
);
724 git_config_from_file(check_repo_format
, path
, format
);
725 if (format
->version
== -1)
726 clear_repository_format(format
);
727 return format
->version
;
730 void clear_repository_format(struct repository_format
*format
)
732 string_list_clear(&format
->unknown_extensions
, 0);
733 string_list_clear(&format
->v1_only_extensions
, 0);
734 free(format
->work_tree
);
735 free(format
->partial_clone
);
736 init_repository_format(format
);
739 int verify_repository_format(const struct repository_format
*format
,
742 if (GIT_REPO_VERSION_READ
< format
->version
) {
743 strbuf_addf(err
, _("Expected git repo version <= %d, found %d"),
744 GIT_REPO_VERSION_READ
, format
->version
);
748 if (format
->version
>= 1 && format
->unknown_extensions
.nr
) {
751 strbuf_addstr(err
, Q_("unknown repository extension found:",
752 "unknown repository extensions found:",
753 format
->unknown_extensions
.nr
));
755 for (i
= 0; i
< format
->unknown_extensions
.nr
; i
++)
756 strbuf_addf(err
, "\n\t%s",
757 format
->unknown_extensions
.items
[i
].string
);
761 if (format
->version
== 0 && format
->v1_only_extensions
.nr
) {
765 Q_("repo version is 0, but v1-only extension found:",
766 "repo version is 0, but v1-only extensions found:",
767 format
->v1_only_extensions
.nr
));
769 for (i
= 0; i
< format
->v1_only_extensions
.nr
; i
++)
770 strbuf_addf(err
, "\n\t%s",
771 format
->v1_only_extensions
.items
[i
].string
);
778 void read_gitfile_error_die(int error_code
, const char *path
, const char *dir
)
780 switch (error_code
) {
781 case READ_GITFILE_ERR_STAT_FAILED
:
782 case READ_GITFILE_ERR_NOT_A_FILE
:
783 /* non-fatal; follow return path */
785 case READ_GITFILE_ERR_OPEN_FAILED
:
786 die_errno(_("error opening '%s'"), path
);
787 case READ_GITFILE_ERR_TOO_LARGE
:
788 die(_("too large to be a .git file: '%s'"), path
);
789 case READ_GITFILE_ERR_READ_FAILED
:
790 die(_("error reading %s"), path
);
791 case READ_GITFILE_ERR_INVALID_FORMAT
:
792 die(_("invalid gitfile format: %s"), path
);
793 case READ_GITFILE_ERR_NO_PATH
:
794 die(_("no path in gitfile: %s"), path
);
795 case READ_GITFILE_ERR_NOT_A_REPO
:
796 die(_("not a git repository: %s"), dir
);
798 BUG("unknown error code");
803 * Try to read the location of the git directory from the .git file,
804 * return path to git directory if found. The return value comes from
807 * On failure, if return_error_code is not NULL, return_error_code
808 * will be set to an error code and NULL will be returned. If
809 * return_error_code is NULL the function will die instead (for most
812 const char *read_gitfile_gently(const char *path
, int *return_error_code
)
814 const int max_file_size
= 1 << 20; /* 1MB */
822 static struct strbuf realpath
= STRBUF_INIT
;
824 if (stat(path
, &st
)) {
825 /* NEEDSWORK: discern between ENOENT vs other errors */
826 error_code
= READ_GITFILE_ERR_STAT_FAILED
;
829 if (!S_ISREG(st
.st_mode
)) {
830 error_code
= READ_GITFILE_ERR_NOT_A_FILE
;
833 if (st
.st_size
> max_file_size
) {
834 error_code
= READ_GITFILE_ERR_TOO_LARGE
;
837 fd
= open(path
, O_RDONLY
);
839 error_code
= READ_GITFILE_ERR_OPEN_FAILED
;
842 buf
= xmallocz(st
.st_size
);
843 len
= read_in_full(fd
, buf
, st
.st_size
);
845 if (len
!= st
.st_size
) {
846 error_code
= READ_GITFILE_ERR_READ_FAILED
;
849 if (!starts_with(buf
, "gitdir: ")) {
850 error_code
= READ_GITFILE_ERR_INVALID_FORMAT
;
853 while (buf
[len
- 1] == '\n' || buf
[len
- 1] == '\r')
856 error_code
= READ_GITFILE_ERR_NO_PATH
;
862 if (!is_absolute_path(dir
) && (slash
= strrchr(path
, '/'))) {
863 size_t pathlen
= slash
+1 - path
;
864 dir
= xstrfmt("%.*s%.*s", (int)pathlen
, path
,
865 (int)(len
- 8), buf
+ 8);
869 if (!is_git_directory(dir
)) {
870 error_code
= READ_GITFILE_ERR_NOT_A_REPO
;
874 strbuf_realpath(&realpath
, dir
, 1);
878 if (return_error_code
)
879 *return_error_code
= error_code
;
881 read_gitfile_error_die(error_code
, path
, dir
);
884 return error_code
? NULL
: path
;
887 static const char *setup_explicit_git_dir(const char *gitdirenv
,
889 struct repository_format
*repo_fmt
,
892 const char *work_tree_env
= getenv(GIT_WORK_TREE_ENVIRONMENT
);
893 const char *worktree
;
897 if (PATH_MAX
- 40 < strlen(gitdirenv
))
898 die(_("'$%s' too big"), GIT_DIR_ENVIRONMENT
);
900 gitfile
= (char*)read_gitfile(gitdirenv
);
902 gitfile
= xstrdup(gitfile
);
906 if (!is_git_directory(gitdirenv
)) {
912 die(_("not a git repository: '%s'"), gitdirenv
);
915 if (check_repository_format_gently(gitdirenv
, repo_fmt
, nongit_ok
)) {
920 /* #3, #7, #11, #15, #19, #23, #27, #31 (see t1510) */
922 set_git_work_tree(work_tree_env
);
923 else if (is_bare_repository_cfg
> 0) {
924 if (git_work_tree_cfg
) {
926 warning("core.bare and core.worktree do not make sense");
927 work_tree_config_is_bogus
= 1;
931 set_git_dir(gitdirenv
, 0);
935 else if (git_work_tree_cfg
) { /* #6, #14 */
936 if (is_absolute_path(git_work_tree_cfg
))
937 set_git_work_tree(git_work_tree_cfg
);
940 if (chdir(gitdirenv
))
941 die_errno(_("cannot chdir to '%s'"), gitdirenv
);
942 if (chdir(git_work_tree_cfg
))
943 die_errno(_("cannot chdir to '%s'"), git_work_tree_cfg
);
944 core_worktree
= xgetcwd();
946 die_errno(_("cannot come back to cwd"));
947 set_git_work_tree(core_worktree
);
951 else if (!git_env_bool(GIT_IMPLICIT_WORK_TREE_ENVIRONMENT
, 1)) {
953 set_git_dir(gitdirenv
, 0);
958 set_git_work_tree(".");
960 /* set_git_work_tree() must have been called by now */
961 worktree
= get_git_work_tree();
963 /* both get_git_work_tree() and cwd are already normalized */
964 if (!strcmp(cwd
->buf
, worktree
)) { /* cwd == worktree */
965 set_git_dir(gitdirenv
, 0);
970 offset
= dir_inside_of(cwd
->buf
, worktree
);
971 if (offset
>= 0) { /* cwd inside worktree? */
972 set_git_dir(gitdirenv
, 1);
974 die_errno(_("cannot chdir to '%s'"), worktree
);
975 strbuf_addch(cwd
, '/');
977 return cwd
->buf
+ offset
;
980 /* cwd outside worktree */
981 set_git_dir(gitdirenv
, 0);
986 static const char *setup_discovered_git_dir(const char *gitdir
,
987 struct strbuf
*cwd
, int offset
,
988 struct repository_format
*repo_fmt
,
991 if (check_repository_format_gently(gitdir
, repo_fmt
, nongit_ok
))
994 /* --work-tree is set without --git-dir; use discovered one */
995 if (getenv(GIT_WORK_TREE_ENVIRONMENT
) || git_work_tree_cfg
) {
996 char *to_free
= NULL
;
999 if (offset
!= cwd
->len
&& !is_absolute_path(gitdir
))
1000 gitdir
= to_free
= real_pathdup(gitdir
, 1);
1001 if (chdir(cwd
->buf
))
1002 die_errno(_("cannot come back to cwd"));
1003 ret
= setup_explicit_git_dir(gitdir
, cwd
, repo_fmt
, nongit_ok
);
1008 /* #16.2, #17.2, #20.2, #21.2, #24, #25, #28, #29 (see t1510) */
1009 if (is_bare_repository_cfg
> 0) {
1010 set_git_dir(gitdir
, (offset
!= cwd
->len
));
1011 if (chdir(cwd
->buf
))
1012 die_errno(_("cannot come back to cwd"));
1016 /* #0, #1, #5, #8, #9, #12, #13 */
1017 set_git_work_tree(".");
1018 if (strcmp(gitdir
, DEFAULT_GIT_DIR_ENVIRONMENT
))
1019 set_git_dir(gitdir
, 0);
1021 inside_work_tree
= 1;
1022 if (offset
>= cwd
->len
)
1025 /* Make "offset" point past the '/' (already the case for root dirs) */
1026 if (offset
!= offset_1st_component(cwd
->buf
))
1028 /* Add a '/' at the end */
1029 strbuf_addch(cwd
, '/');
1030 return cwd
->buf
+ offset
;
1033 /* #16.1, #17.1, #20.1, #21.1, #22.1 (see t1510) */
1034 static const char *setup_bare_git_dir(struct strbuf
*cwd
, int offset
,
1035 struct repository_format
*repo_fmt
,
1040 if (check_repository_format_gently(".", repo_fmt
, nongit_ok
))
1043 setenv(GIT_IMPLICIT_WORK_TREE_ENVIRONMENT
, "0", 1);
1045 /* --work-tree is set without --git-dir; use discovered one */
1046 if (getenv(GIT_WORK_TREE_ENVIRONMENT
) || git_work_tree_cfg
) {
1047 static const char *gitdir
;
1049 gitdir
= offset
== cwd
->len
? "." : xmemdupz(cwd
->buf
, offset
);
1050 if (chdir(cwd
->buf
))
1051 die_errno(_("cannot come back to cwd"));
1052 return setup_explicit_git_dir(gitdir
, cwd
, repo_fmt
, nongit_ok
);
1056 inside_work_tree
= 0;
1057 if (offset
!= cwd
->len
) {
1058 if (chdir(cwd
->buf
))
1059 die_errno(_("cannot come back to cwd"));
1060 root_len
= offset_1st_component(cwd
->buf
);
1061 strbuf_setlen(cwd
, offset
> root_len
? offset
: root_len
);
1062 set_git_dir(cwd
->buf
, 0);
1065 set_git_dir(".", 0);
1069 static dev_t
get_device_or_die(const char *path
, const char *prefix
, int prefix_len
)
1072 if (stat(path
, &buf
)) {
1073 die_errno(_("failed to stat '%*s%s%s'"),
1075 prefix
? prefix
: "",
1076 prefix
? "/" : "", path
);
1082 * A "string_list_each_func_t" function that canonicalizes an entry
1083 * from GIT_CEILING_DIRECTORIES using real_pathdup(), or
1084 * discards it if unusable. The presence of an empty entry in
1085 * GIT_CEILING_DIRECTORIES turns off canonicalization for all
1086 * subsequent entries.
1088 static int canonicalize_ceiling_entry(struct string_list_item
*item
,
1091 int *empty_entry_found
= cb_data
;
1092 char *ceil
= item
->string
;
1095 *empty_entry_found
= 1;
1097 } else if (!is_absolute_path(ceil
)) {
1099 } else if (*empty_entry_found
) {
1100 /* Keep entry but do not canonicalize it */
1103 char *real_path
= real_pathdup(ceil
, 0);
1108 item
->string
= real_path
;
1113 struct safe_directory_data
{
1118 static int safe_directory_cb(const char *key
, const char *value
, void *d
)
1120 struct safe_directory_data
*data
= d
;
1122 if (strcmp(key
, "safe.directory"))
1125 if (!value
|| !*value
) {
1127 } else if (!strcmp(value
, "*")) {
1130 const char *interpolated
= NULL
;
1132 if (!git_config_pathname(&interpolated
, key
, value
) &&
1133 !fspathcmp(data
->path
, interpolated
? interpolated
: value
))
1136 free((char *)interpolated
);
1143 * Check if a repository is safe, by verifying the ownership of the
1144 * worktree (if any), the git directory, and the gitfile (if any).
1146 * Exemptions for known-safe repositories can be added via `safe.directory`
1147 * config settings; for non-bare repositories, their worktree needs to be
1148 * added, for bare ones their git directory.
1150 static int ensure_valid_ownership(const char *gitfile
,
1151 const char *worktree
, const char *gitdir
,
1152 struct strbuf
*report
)
1154 struct safe_directory_data data
= {
1155 .path
= worktree
? worktree
: gitdir
1158 if (!git_env_bool("GIT_TEST_ASSUME_DIFFERENT_OWNER", 0) &&
1159 (!gitfile
|| is_path_owned_by_current_user(gitfile
, report
)) &&
1160 (!worktree
|| is_path_owned_by_current_user(worktree
, report
)) &&
1161 (!gitdir
|| is_path_owned_by_current_user(gitdir
, report
)))
1165 * data.path is the "path" that identifies the repository and it is
1166 * constant regardless of what failed above. data.is_safe should be
1167 * initialized to false, and might be changed by the callback.
1169 git_protected_config(safe_directory_cb
, &data
);
1171 return data
.is_safe
;
1174 static int allowed_bare_repo_cb(const char *key
, const char *value
, void *d
)
1176 enum allowed_bare_repo
*allowed_bare_repo
= d
;
1178 if (strcasecmp(key
, "safe.bareRepository"))
1181 if (!strcmp(value
, "explicit")) {
1182 *allowed_bare_repo
= ALLOWED_BARE_REPO_EXPLICIT
;
1185 if (!strcmp(value
, "all")) {
1186 *allowed_bare_repo
= ALLOWED_BARE_REPO_ALL
;
1192 static enum allowed_bare_repo
get_allowed_bare_repo(void)
1194 enum allowed_bare_repo result
= ALLOWED_BARE_REPO_ALL
;
1195 git_protected_config(allowed_bare_repo_cb
, &result
);
1199 static const char *allowed_bare_repo_to_string(
1200 enum allowed_bare_repo allowed_bare_repo
)
1202 switch (allowed_bare_repo
) {
1203 case ALLOWED_BARE_REPO_EXPLICIT
:
1205 case ALLOWED_BARE_REPO_ALL
:
1208 BUG("invalid allowed_bare_repo %d",
1214 enum discovery_result
{
1219 /* these are errors */
1220 GIT_DIR_HIT_CEILING
= -1,
1221 GIT_DIR_HIT_MOUNT_POINT
= -2,
1222 GIT_DIR_INVALID_GITFILE
= -3,
1223 GIT_DIR_INVALID_OWNERSHIP
= -4,
1224 GIT_DIR_DISALLOWED_BARE
= -5,
1228 * We cannot decide in this function whether we are in the work tree or
1229 * not, since the config can only be read _after_ this function was called.
1231 * Also, we avoid changing any global state (such as the current working
1232 * directory) to allow early callers.
1234 * The directory where the search should start needs to be passed in via the
1235 * `dir` parameter; upon return, the `dir` buffer will contain the path of
1236 * the directory where the search ended, and `gitdir` will contain the path of
1237 * the discovered .git/ directory, if any. If `gitdir` is not absolute, it
1238 * is relative to `dir` (i.e. *not* necessarily the cwd).
1240 static enum discovery_result
setup_git_directory_gently_1(struct strbuf
*dir
,
1241 struct strbuf
*gitdir
,
1242 struct strbuf
*report
,
1245 const char *env_ceiling_dirs
= getenv(CEILING_DIRECTORIES_ENVIRONMENT
);
1246 struct string_list ceiling_dirs
= STRING_LIST_INIT_DUP
;
1247 const char *gitdirenv
;
1248 int ceil_offset
= -1, min_offset
= offset_1st_component(dir
->buf
);
1249 dev_t current_device
= 0;
1250 int one_filesystem
= 1;
1253 * If GIT_DIR is set explicitly, we're not going
1254 * to do any discovery, but we still do repository
1257 gitdirenv
= getenv(GIT_DIR_ENVIRONMENT
);
1259 strbuf_addstr(gitdir
, gitdirenv
);
1260 return GIT_DIR_EXPLICIT
;
1263 if (env_ceiling_dirs
) {
1264 int empty_entry_found
= 0;
1266 string_list_split(&ceiling_dirs
, env_ceiling_dirs
, PATH_SEP
, -1);
1267 filter_string_list(&ceiling_dirs
, 0,
1268 canonicalize_ceiling_entry
, &empty_entry_found
);
1269 ceil_offset
= longest_ancestor_length(dir
->buf
, &ceiling_dirs
);
1270 string_list_clear(&ceiling_dirs
, 0);
1273 if (ceil_offset
< 0)
1274 ceil_offset
= min_offset
- 2;
1276 if (min_offset
&& min_offset
== dir
->len
&&
1277 !is_dir_sep(dir
->buf
[min_offset
- 1])) {
1278 strbuf_addch(dir
, '/');
1283 * Test in the following order (relative to the dir):
1284 * - .git (file containing "gitdir: <path>")
1293 one_filesystem
= !git_env_bool("GIT_DISCOVERY_ACROSS_FILESYSTEM", 0);
1295 current_device
= get_device_or_die(dir
->buf
, NULL
, 0);
1297 int offset
= dir
->len
, error_code
= 0;
1298 char *gitdir_path
= NULL
;
1299 char *gitfile
= NULL
;
1301 if (offset
> min_offset
)
1302 strbuf_addch(dir
, '/');
1303 strbuf_addstr(dir
, DEFAULT_GIT_DIR_ENVIRONMENT
);
1304 gitdirenv
= read_gitfile_gently(dir
->buf
, die_on_error
?
1305 NULL
: &error_code
);
1308 error_code
== READ_GITFILE_ERR_NOT_A_FILE
) {
1309 /* NEEDSWORK: fail if .git is not file nor dir */
1310 if (is_git_directory(dir
->buf
)) {
1311 gitdirenv
= DEFAULT_GIT_DIR_ENVIRONMENT
;
1312 gitdir_path
= xstrdup(dir
->buf
);
1314 } else if (error_code
!= READ_GITFILE_ERR_STAT_FAILED
)
1315 return GIT_DIR_INVALID_GITFILE
;
1317 gitfile
= xstrdup(dir
->buf
);
1319 * Earlier, we tentatively added DEFAULT_GIT_DIR_ENVIRONMENT
1320 * to check that directory for a repository.
1321 * Now trim that tentative addition away, because we want to
1322 * focus on the real directory we are in.
1324 strbuf_setlen(dir
, offset
);
1326 enum discovery_result ret
;
1327 const char *gitdir_candidate
=
1328 gitdir_path
? gitdir_path
: gitdirenv
;
1330 if (ensure_valid_ownership(gitfile
, dir
->buf
,
1331 gitdir_candidate
, report
)) {
1332 strbuf_addstr(gitdir
, gitdirenv
);
1333 ret
= GIT_DIR_DISCOVERED
;
1335 ret
= GIT_DIR_INVALID_OWNERSHIP
;
1338 * Earlier, during discovery, we might have allocated
1339 * string copies for gitdir_path or gitfile so make
1340 * sure we don't leak by freeing them now, before
1341 * leaving the loop and function.
1343 * Note: gitdirenv will be non-NULL whenever these are
1344 * allocated, therefore we need not take care of releasing
1345 * them outside of this conditional block.
1353 if (is_git_directory(dir
->buf
)) {
1354 if (get_allowed_bare_repo() == ALLOWED_BARE_REPO_EXPLICIT
)
1355 return GIT_DIR_DISALLOWED_BARE
;
1356 if (!ensure_valid_ownership(NULL
, NULL
, dir
->buf
, report
))
1357 return GIT_DIR_INVALID_OWNERSHIP
;
1358 strbuf_addstr(gitdir
, ".");
1359 return GIT_DIR_BARE
;
1362 if (offset
<= min_offset
)
1363 return GIT_DIR_HIT_CEILING
;
1365 while (--offset
> ceil_offset
&& !is_dir_sep(dir
->buf
[offset
]))
1367 if (offset
<= ceil_offset
)
1368 return GIT_DIR_HIT_CEILING
;
1370 strbuf_setlen(dir
, offset
> min_offset
? offset
: min_offset
);
1371 if (one_filesystem
&&
1372 current_device
!= get_device_or_die(dir
->buf
, NULL
, offset
))
1373 return GIT_DIR_HIT_MOUNT_POINT
;
1377 int discover_git_directory(struct strbuf
*commondir
,
1378 struct strbuf
*gitdir
)
1380 struct strbuf dir
= STRBUF_INIT
, err
= STRBUF_INIT
;
1381 size_t gitdir_offset
= gitdir
->len
, cwd_len
;
1382 size_t commondir_offset
= commondir
->len
;
1383 struct repository_format candidate
= REPOSITORY_FORMAT_INIT
;
1385 if (strbuf_getcwd(&dir
))
1389 if (setup_git_directory_gently_1(&dir
, gitdir
, NULL
, 0) <= 0) {
1390 strbuf_release(&dir
);
1395 * The returned gitdir is relative to dir, and if dir does not reflect
1396 * the current working directory, we simply make the gitdir absolute.
1398 if (dir
.len
< cwd_len
&& !is_absolute_path(gitdir
->buf
+ gitdir_offset
)) {
1399 /* Avoid a trailing "/." */
1400 if (!strcmp(".", gitdir
->buf
+ gitdir_offset
))
1401 strbuf_setlen(gitdir
, gitdir_offset
);
1403 strbuf_addch(&dir
, '/');
1404 strbuf_insert(gitdir
, gitdir_offset
, dir
.buf
, dir
.len
);
1407 get_common_dir(commondir
, gitdir
->buf
+ gitdir_offset
);
1410 strbuf_addf(&dir
, "%s/config", commondir
->buf
+ commondir_offset
);
1411 read_repository_format(&candidate
, dir
.buf
);
1412 strbuf_release(&dir
);
1414 if (verify_repository_format(&candidate
, &err
) < 0) {
1415 warning("ignoring git dir '%s': %s",
1416 gitdir
->buf
+ gitdir_offset
, err
.buf
);
1417 strbuf_release(&err
);
1418 strbuf_setlen(commondir
, commondir_offset
);
1419 strbuf_setlen(gitdir
, gitdir_offset
);
1420 clear_repository_format(&candidate
);
1424 /* take ownership of candidate.partial_clone */
1425 the_repository
->repository_format_partial_clone
=
1426 candidate
.partial_clone
;
1427 candidate
.partial_clone
= NULL
;
1429 clear_repository_format(&candidate
);
1433 const char *setup_git_directory_gently(int *nongit_ok
)
1435 static struct strbuf cwd
= STRBUF_INIT
;
1436 struct strbuf dir
= STRBUF_INIT
, gitdir
= STRBUF_INIT
, report
= STRBUF_INIT
;
1437 const char *prefix
= NULL
;
1438 struct repository_format repo_fmt
= REPOSITORY_FORMAT_INIT
;
1441 * We may have read an incomplete configuration before
1442 * setting-up the git directory. If so, clear the cache so
1443 * that the next queries to the configuration reload complete
1444 * configuration (including the per-repo config file that we
1445 * ignored previously).
1450 * Let's assume that we are in a git repository.
1451 * If it turns out later that we are somewhere else, the value will be
1452 * updated accordingly.
1457 if (strbuf_getcwd(&cwd
))
1458 die_errno(_("Unable to read current working directory"));
1459 strbuf_addbuf(&dir
, &cwd
);
1461 switch (setup_git_directory_gently_1(&dir
, &gitdir
, &report
, 1)) {
1462 case GIT_DIR_EXPLICIT
:
1463 prefix
= setup_explicit_git_dir(gitdir
.buf
, &cwd
, &repo_fmt
, nongit_ok
);
1465 case GIT_DIR_DISCOVERED
:
1466 if (dir
.len
< cwd
.len
&& chdir(dir
.buf
))
1467 die(_("cannot change to '%s'"), dir
.buf
);
1468 prefix
= setup_discovered_git_dir(gitdir
.buf
, &cwd
, dir
.len
,
1469 &repo_fmt
, nongit_ok
);
1472 if (dir
.len
< cwd
.len
&& chdir(dir
.buf
))
1473 die(_("cannot change to '%s'"), dir
.buf
);
1474 prefix
= setup_bare_git_dir(&cwd
, dir
.len
, &repo_fmt
, nongit_ok
);
1476 case GIT_DIR_HIT_CEILING
:
1478 die(_("not a git repository (or any of the parent directories): %s"),
1479 DEFAULT_GIT_DIR_ENVIRONMENT
);
1482 case GIT_DIR_HIT_MOUNT_POINT
:
1484 die(_("not a git repository (or any parent up to mount point %s)\n"
1485 "Stopping at filesystem boundary (GIT_DISCOVERY_ACROSS_FILESYSTEM not set)."),
1489 case GIT_DIR_INVALID_OWNERSHIP
:
1491 struct strbuf quoted
= STRBUF_INIT
;
1493 strbuf_complete(&report
, '\n');
1494 sq_quote_buf_pretty("ed
, dir
.buf
);
1495 die(_("detected dubious ownership in repository at '%s'\n"
1497 "To add an exception for this directory, call:\n"
1499 "\tgit config --global --add safe.directory %s"),
1500 dir
.buf
, report
.buf
, quoted
.buf
);
1504 case GIT_DIR_DISALLOWED_BARE
:
1506 die(_("cannot use bare repository '%s' (safe.bareRepository is '%s')"),
1508 allowed_bare_repo_to_string(get_allowed_bare_repo()));
1514 * As a safeguard against setup_git_directory_gently_1 returning
1515 * this value, fallthrough to BUG. Otherwise it is possible to
1516 * set startup_info->have_repository to 1 when we did nothing to
1517 * find a repository.
1520 BUG("unhandled setup_git_directory_gently_1() result");
1524 * At this point, nongit_ok is stable. If it is non-NULL and points
1525 * to a non-zero value, then this means that we haven't found a
1526 * repository and that the caller expects startup_info to reflect
1529 * Regardless of the state of nongit_ok, startup_info->prefix and
1530 * the GIT_PREFIX environment variable must always match. For details
1531 * see Documentation/config/alias.txt.
1533 if (nongit_ok
&& *nongit_ok
)
1534 startup_info
->have_repository
= 0;
1536 startup_info
->have_repository
= 1;
1539 * Not all paths through the setup code will call 'set_git_dir()' (which
1540 * directly sets up the environment) so in order to guarantee that the
1541 * environment is in a consistent state after setup, explicitly setup
1542 * the environment if we have a repository.
1544 * NEEDSWORK: currently we allow bogus GIT_DIR values to be set in some
1545 * code paths so we also need to explicitly setup the environment if
1546 * the user has set GIT_DIR. It may be beneficial to disallow bogus
1547 * GIT_DIR values at some point in the future.
1549 if (/* GIT_DIR_EXPLICIT, GIT_DIR_DISCOVERED, GIT_DIR_BARE */
1550 startup_info
->have_repository
||
1551 /* GIT_DIR_EXPLICIT */
1552 getenv(GIT_DIR_ENVIRONMENT
)) {
1553 if (!the_repository
->gitdir
) {
1554 const char *gitdir
= getenv(GIT_DIR_ENVIRONMENT
);
1556 gitdir
= DEFAULT_GIT_DIR_ENVIRONMENT
;
1557 setup_git_env(gitdir
);
1559 if (startup_info
->have_repository
) {
1560 repo_set_hash_algo(the_repository
, repo_fmt
.hash_algo
);
1561 /* take ownership of repo_fmt.partial_clone */
1562 the_repository
->repository_format_partial_clone
=
1563 repo_fmt
.partial_clone
;
1564 repo_fmt
.partial_clone
= NULL
;
1568 * Since precompose_string_if_needed() needs to look at
1569 * the core.precomposeunicode configuration, this
1570 * has to happen after the above block that finds
1571 * out where the repository is, i.e. a preparation
1572 * for calling git_config_get_bool().
1575 prefix
= precompose_string_if_needed(prefix
);
1576 startup_info
->prefix
= prefix
;
1577 setenv(GIT_PREFIX_ENVIRONMENT
, prefix
, 1);
1579 startup_info
->prefix
= NULL
;
1580 setenv(GIT_PREFIX_ENVIRONMENT
, "", 1);
1583 setup_original_cwd();
1585 strbuf_release(&dir
);
1586 strbuf_release(&gitdir
);
1587 strbuf_release(&report
);
1588 clear_repository_format(&repo_fmt
);
1593 int git_config_perm(const char *var
, const char *value
)
1601 if (!strcmp(value
, "umask"))
1603 if (!strcmp(value
, "group"))
1605 if (!strcmp(value
, "all") ||
1606 !strcmp(value
, "world") ||
1607 !strcmp(value
, "everybody"))
1608 return PERM_EVERYBODY
;
1610 /* Parse octal numbers */
1611 i
= strtol(value
, &endptr
, 8);
1613 /* If not an octal number, maybe true/false? */
1615 return git_config_bool(var
, value
) ? PERM_GROUP
: PERM_UMASK
;
1618 * Treat values 0, 1 and 2 as compatibility cases, otherwise it is
1619 * a chmod value to restrict to.
1622 case PERM_UMASK
: /* 0 */
1624 case OLD_PERM_GROUP
: /* 1 */
1626 case OLD_PERM_EVERYBODY
: /* 2 */
1627 return PERM_EVERYBODY
;
1630 /* A filemode value was given: 0xxx */
1632 if ((i
& 0600) != 0600)
1633 die(_("problem with core.sharedRepository filemode value "
1634 "(0%.3o).\nThe owner of files must always have "
1635 "read and write permissions."), i
);
1638 * Mask filemode value. Others can not get write permission.
1639 * x flags for directories are handled separately.
1644 void check_repository_format(struct repository_format
*fmt
)
1646 struct repository_format repo_fmt
= REPOSITORY_FORMAT_INIT
;
1649 check_repository_format_gently(get_git_dir(), fmt
, NULL
);
1650 startup_info
->have_repository
= 1;
1651 repo_set_hash_algo(the_repository
, fmt
->hash_algo
);
1652 the_repository
->repository_format_partial_clone
=
1653 xstrdup_or_null(fmt
->partial_clone
);
1654 clear_repository_format(&repo_fmt
);
1658 * Returns the "prefix", a path to the current working directory
1659 * relative to the work tree root, or NULL, if the current working
1660 * directory is not a strict subdirectory of the work tree root. The
1661 * prefix always ends with a '/' character.
1663 const char *setup_git_directory(void)
1665 return setup_git_directory_gently(NULL
);
1668 const char *resolve_gitdir_gently(const char *suspect
, int *return_error_code
)
1670 if (is_git_directory(suspect
))
1672 return read_gitfile_gently(suspect
, return_error_code
);
1675 /* if any standard file descriptor is missing open it to /dev/null */
1676 void sanitize_stdfds(void)
1678 int fd
= xopen("/dev/null", O_RDWR
);
1687 #ifdef NO_POSIX_GOODIES
1695 die_errno(_("fork failed"));
1700 die_errno(_("setsid failed"));