2 * This handles recursive filename detection with exclude
3 * files, index knowledge etc..
5 * See Documentation/technical/api-directory-listing.txt
7 * Copyright (C) Linus Torvalds, 2005-2006
8 * Junio Hamano, 2005-2006
10 #define NO_THE_INDEX_COMPATIBILITY_MACROS
15 #include "wildmatch.h"
19 #include "ewah/ewok.h"
22 * Tells read_directory_recursive how a file or directory should be treated.
23 * Values are ordered by significance, e.g. if a directory contains both
24 * excluded and untracked files, it is listed as untracked because
25 * path_untracked > path_excluded.
35 * Support data structure for our opendir/readdir/closedir wrappers
39 struct untracked_cache_dir *untracked;
45 struct untracked_cache_dir *ucd;
48 static enum path_treatment read_directory_recursive(struct dir_struct *dir,
49 const char *path, int len, struct untracked_cache_dir *untracked,
50 int check_only, const struct pathspec *pathspec);
51 static int get_dtype(struct dirent *de, const char *path, int len);
53 int fspathcmp(const char *a, const char *b)
55 return ignore_case ? strcasecmp(a, b) : strcmp(a, b);
58 int fspathncmp(const char *a, const char *b, size_t count)
60 return ignore_case ? strncasecmp(a, b, count) : strncmp(a, b, count);
63 int git_fnmatch(const struct pathspec_item *item,
64 const char *pattern, const char *string,
68 if (ps_strncmp(item, pattern, string, prefix))
73 if (item->flags & PATHSPEC_ONESTAR) {
74 int pattern_len = strlen(++pattern);
75 int string_len = strlen(string);
76 return string_len < pattern_len ||
77 ps_strcmp(item, pattern,
78 string + string_len - pattern_len);
80 if (item->magic & PATHSPEC_GLOB)
81 return wildmatch(pattern, string,
83 (item->magic & PATHSPEC_ICASE ? WM_CASEFOLD : 0),
86 /* wildmatch has not learned no FNM_PATHNAME mode yet */
87 return wildmatch(pattern, string,
88 item->magic & PATHSPEC_ICASE ? WM_CASEFOLD : 0,
92 static int fnmatch_icase_mem(const char *pattern, int patternlen,
93 const char *string, int stringlen,
97 struct strbuf pat_buf = STRBUF_INIT;
98 struct strbuf str_buf = STRBUF_INIT;
99 const char *use_pat = pattern;
100 const char *use_str = string;
102 if (pattern[patternlen]) {
103 strbuf_add(&pat_buf, pattern, patternlen);
104 use_pat = pat_buf.buf;
106 if (string[stringlen]) {
107 strbuf_add(&str_buf, string, stringlen);
108 use_str = str_buf.buf;
112 flags |= WM_CASEFOLD;
113 match_status = wildmatch(use_pat, use_str, flags, NULL);
115 strbuf_release(&pat_buf);
116 strbuf_release(&str_buf);
121 static size_t common_prefix_len(const struct pathspec *pathspec)
127 * ":(icase)path" is treated as a pathspec full of
128 * wildcard. In other words, only prefix is considered common
129 * prefix. If the pathspec is abc/foo abc/bar, running in
130 * subdir xyz, the common prefix is still xyz, not xuz/abc as
133 GUARD_PATHSPEC(pathspec,
142 for (n = 0; n < pathspec->nr; n++) {
143 size_t i = 0, len = 0, item_len;
144 if (pathspec->items[n].magic & PATHSPEC_EXCLUDE)
146 if (pathspec->items[n].magic & PATHSPEC_ICASE)
147 item_len = pathspec->items[n].prefix;
149 item_len = pathspec->items[n].nowildcard_len;
150 while (i < item_len && (n == 0 || i < max)) {
151 char c = pathspec->items[n].match[i];
152 if (c != pathspec->items[0].match[i])
158 if (n == 0 || len < max) {
168 * Returns a copy of the longest leading path common among all
171 char *common_prefix(const struct pathspec *pathspec)
173 unsigned long len = common_prefix_len(pathspec);
175 return len ? xmemdupz(pathspec->items[0].match, len) : NULL;
178 int fill_directory(struct dir_struct *dir, const struct pathspec *pathspec)
184 * Calculate common prefix for the pathspec, and
185 * use that to optimize the directory walk
187 prefix_len = common_prefix_len(pathspec);
188 prefix = prefix_len ? pathspec->items[0].match : "";
190 /* Read the directory and prune it */
191 read_directory(dir, prefix, prefix_len, pathspec);
196 int within_depth(const char *name, int namelen,
197 int depth, int max_depth)
199 const char *cp = name, *cpe = name + namelen;
205 if (depth > max_depth)
211 #define DO_MATCH_EXCLUDE (1<<0)
212 #define DO_MATCH_DIRECTORY (1<<1)
213 #define DO_MATCH_SUBMODULE (1<<2)
215 static int match_attrs(const char *name, int namelen,
216 const struct pathspec_item *item)
220 git_check_attr(name, item->attr_check);
221 for (i = 0; i < item->attr_match_nr; i++) {
224 enum attr_match_mode match_mode;
226 value = item->attr_check->items[i].value;
227 match_mode = item->attr_match[i].match_mode;
229 if (ATTR_TRUE(value))
230 matched = (match_mode == MATCH_SET);
231 else if (ATTR_FALSE(value))
232 matched = (match_mode == MATCH_UNSET);
233 else if (ATTR_UNSET(value))
234 matched = (match_mode == MATCH_UNSPECIFIED);
236 matched = (match_mode == MATCH_VALUE &&
237 !strcmp(item->attr_match[i].value, value));
246 * Does 'match' match the given name?
247 * A match is found if
249 * (1) the 'match' string is leading directory of 'name', or
250 * (2) the 'match' string is a wildcard and matches 'name', or
251 * (3) the 'match' string is exactly the same as 'name'.
253 * and the return value tells which case it was.
255 * It returns 0 when there is no match.
257 static int match_pathspec_item(const struct pathspec_item *item, int prefix,
258 const char *name, int namelen, unsigned flags)
260 /* name/namelen has prefix cut off by caller */
261 const char *match = item->match + prefix;
262 int matchlen = item->len - prefix;
265 * The normal call pattern is:
266 * 1. prefix = common_prefix_len(ps);
267 * 2. prune something, or fill_directory
268 * 3. match_pathspec()
270 * 'prefix' at #1 may be shorter than the command's prefix and
271 * it's ok for #2 to match extra files. Those extras will be
274 * Suppose the pathspec is 'foo' and '../bar' running from
275 * subdir 'xyz'. The common prefix at #1 will be empty, thanks
276 * to "../". We may have xyz/foo _and_ XYZ/foo after #2. The
277 * user does not want XYZ/foo, only the "foo" part should be
278 * case-insensitive. We need to filter out XYZ/foo here. In
279 * other words, we do not trust the caller on comparing the
280 * prefix part when :(icase) is involved. We do exact
281 * comparison ourselves.
283 * Normally the caller (common_prefix_len() in fact) does
284 * _exact_ matching on name[-prefix+1..-1] and we do not need
285 * to check that part. Be defensive and check it anyway, in
286 * case common_prefix_len is changed, or a new caller is
287 * introduced that does not use common_prefix_len.
289 * If the penalty turns out too high when prefix is really
290 * long, maybe change it to
291 * strncmp(match, name, item->prefix - prefix)
293 if (item->prefix && (item->magic & PATHSPEC_ICASE) &&
294 strncmp(item->match, name - prefix, item->prefix))
297 if (item->attr_match_nr && !match_attrs(name, namelen, item))
300 /* If the match was just the prefix, we matched */
302 return MATCHED_RECURSIVELY;
304 if (matchlen <= namelen && !ps_strncmp(item, match, name, matchlen)) {
305 if (matchlen == namelen)
306 return MATCHED_EXACTLY;
308 if (match[matchlen-1] == '/' || name[matchlen] == '/')
309 return MATCHED_RECURSIVELY;
310 } else if ((flags & DO_MATCH_DIRECTORY) &&
311 match[matchlen - 1] == '/' &&
312 namelen == matchlen - 1 &&
313 !ps_strncmp(item, match, name, namelen))
314 return MATCHED_EXACTLY;
316 if (item->nowildcard_len < item->len &&
317 !git_fnmatch(item, match, name,
318 item->nowildcard_len - prefix))
319 return MATCHED_FNMATCH;
321 /* Perform checks to see if "name" is a super set of the pathspec */
322 if (flags & DO_MATCH_SUBMODULE) {
323 /* name is a literal prefix of the pathspec */
324 if ((namelen < matchlen) &&
325 (match[namelen] == '/') &&
326 !ps_strncmp(item, match, name, namelen))
327 return MATCHED_RECURSIVELY;
329 /* name" doesn't match up to the first wild character */
330 if (item->nowildcard_len < item->len &&
331 ps_strncmp(item, match, name,
332 item->nowildcard_len - prefix))
336 * Here is where we would perform a wildmatch to check if
337 * "name" can be matched as a directory (or a prefix) against
338 * the pathspec. Since wildmatch doesn't have this capability
339 * at the present we have to punt and say that it is a match,
340 * potentially returning a false positive
341 * The submodules themselves will be able to perform more
342 * accurate matching to determine if the pathspec matches.
344 return MATCHED_RECURSIVELY;
351 * Given a name and a list of pathspecs, returns the nature of the
352 * closest (i.e. most specific) match of the name to any of the
355 * The caller typically calls this multiple times with the same
356 * pathspec and seen[] array but with different name/namelen
357 * (e.g. entries from the index) and is interested in seeing if and
358 * how each pathspec matches all the names it calls this function
359 * with. A mark is left in the seen[] array for each pathspec element
360 * indicating the closest type of match that element achieved, so if
361 * seen[n] remains zero after multiple invocations, that means the nth
362 * pathspec did not match any names, which could indicate that the
363 * user mistyped the nth pathspec.
365 static int do_match_pathspec(const struct pathspec *ps,
366 const char *name, int namelen,
367 int prefix, char *seen,
370 int i, retval = 0, exclude = flags & DO_MATCH_EXCLUDE;
382 if (!ps->recursive ||
383 !(ps->magic & PATHSPEC_MAXDEPTH) ||
385 return MATCHED_RECURSIVELY;
387 if (within_depth(name, namelen, 0, ps->max_depth))
388 return MATCHED_EXACTLY;
396 for (i = ps->nr - 1; i >= 0; i--) {
399 if ((!exclude && ps->items[i].magic & PATHSPEC_EXCLUDE) ||
400 ( exclude && !(ps->items[i].magic & PATHSPEC_EXCLUDE)))
403 if (seen && seen[i] == MATCHED_EXACTLY)
406 * Make exclude patterns optional and never report
407 * "pathspec ':(exclude)foo' matches no files"
409 if (seen && ps->items[i].magic & PATHSPEC_EXCLUDE)
410 seen[i] = MATCHED_FNMATCH;
411 how = match_pathspec_item(ps->items+i, prefix, name,
414 (ps->magic & PATHSPEC_MAXDEPTH) &&
415 ps->max_depth != -1 &&
416 how && how != MATCHED_FNMATCH) {
417 int len = ps->items[i].len;
418 if (name[len] == '/')
420 if (within_depth(name+len, namelen-len, 0, ps->max_depth))
421 how = MATCHED_EXACTLY;
428 if (seen && seen[i] < how)
435 int match_pathspec(const struct pathspec *ps,
436 const char *name, int namelen,
437 int prefix, char *seen, int is_dir)
439 int positive, negative;
440 unsigned flags = is_dir ? DO_MATCH_DIRECTORY : 0;
441 positive = do_match_pathspec(ps, name, namelen,
442 prefix, seen, flags);
443 if (!(ps->magic & PATHSPEC_EXCLUDE) || !positive)
445 negative = do_match_pathspec(ps, name, namelen,
447 flags | DO_MATCH_EXCLUDE);
448 return negative ? 0 : positive;
452 * Check if a submodule is a superset of the pathspec
454 int submodule_path_match(const struct pathspec *ps,
455 const char *submodule_name,
458 int matched = do_match_pathspec(ps, submodule_name,
459 strlen(submodule_name),
466 int report_path_error(const char *ps_matched,
467 const struct pathspec *pathspec,
471 * Make sure all pathspec matched; otherwise it is an error.
474 for (num = 0; num < pathspec->nr; num++) {
475 int other, found_dup;
480 * The caller might have fed identical pathspec
481 * twice. Do not barf on such a mistake.
482 * FIXME: parse_pathspec should have eliminated
483 * duplicate pathspec.
485 for (found_dup = other = 0;
486 !found_dup && other < pathspec->nr;
488 if (other == num || !ps_matched[other])
490 if (!strcmp(pathspec->items[other].original,
491 pathspec->items[num].original))
493 * Ok, we have a match already.
500 error("pathspec '%s' did not match any file(s) known to git.",
501 pathspec->items[num].original);
508 * Return the length of the "simple" part of a path match limiter.
510 int simple_length(const char *match)
515 unsigned char c = *match++;
517 if (c == '\0' || is_glob_special(c))
522 int no_wildcard(const char *string)
524 return string[simple_length(string)] == '\0';
527 void parse_exclude_pattern(const char **pattern,
532 const char *p = *pattern;
537 *flags |= EXC_FLAG_NEGATIVE;
541 if (len && p[len - 1] == '/') {
543 *flags |= EXC_FLAG_MUSTBEDIR;
545 for (i = 0; i < len; i++) {
550 *flags |= EXC_FLAG_NODIR;
551 *nowildcardlen = simple_length(p);
553 * we should have excluded the trailing slash from 'p' too,
554 * but that's one more allocation. Instead just make sure
555 * nowildcardlen does not exceed real patternlen
557 if (*nowildcardlen > len)
558 *nowildcardlen = len;
559 if (*p == '*' && no_wildcard(p + 1))
560 *flags |= EXC_FLAG_ENDSWITH;
565 void add_exclude(const char *string, const char *base,
566 int baselen, struct exclude_list *el, int srcpos)
573 parse_exclude_pattern(&string, &patternlen, &flags, &nowildcardlen);
574 if (flags & EXC_FLAG_MUSTBEDIR) {
575 FLEXPTR_ALLOC_MEM(x, pattern, string, patternlen);
577 x = xmalloc(sizeof(*x));
580 x->patternlen = patternlen;
581 x->nowildcardlen = nowildcardlen;
583 x->baselen = baselen;
586 ALLOC_GROW(el->excludes, el->nr + 1, el->alloc);
587 el->excludes[el->nr++] = x;
591 static void *read_skip_worktree_file_from_index(const struct index_state *istate,
592 const char *path, size_t *size,
593 struct sha1_stat *sha1_stat)
597 enum object_type type;
601 pos = index_name_pos(istate, path, len);
604 if (!ce_skip_worktree(istate->cache[pos]))
606 data = read_sha1_file(istate->cache[pos]->oid.hash, &type, &sz);
607 if (!data || type != OBJ_BLOB) {
613 memset(&sha1_stat->stat, 0, sizeof(sha1_stat->stat));
614 hashcpy(sha1_stat->sha1, istate->cache[pos]->oid.hash);
620 * Frees memory within el which was allocated for exclude patterns and
621 * the file buffer. Does not free el itself.
623 void clear_exclude_list(struct exclude_list *el)
627 for (i = 0; i < el->nr; i++)
628 free(el->excludes[i]);
632 memset(el, 0, sizeof(*el));
635 static void trim_trailing_spaces(char *buf)
637 char *p, *last_space = NULL;
639 for (p = buf; *p; p++)
659 * Given a subdirectory name and "dir" of the current directory,
660 * search the subdir in "dir" and return it, or create a new one if it
661 * does not exist in "dir".
663 * If "name" has the trailing slash, it'll be excluded in the search.
665 static struct untracked_cache_dir *lookup_untracked(struct untracked_cache *uc,
666 struct untracked_cache_dir *dir,
667 const char *name, int len)
670 struct untracked_cache_dir *d;
673 if (len && name[len - 1] == '/')
677 while (last > first) {
678 int cmp, next = (last + first) >> 1;
680 cmp = strncmp(name, d->name, len);
681 if (!cmp && strlen(d->name) > len)
693 FLEX_ALLOC_MEM(d, name, name, len);
695 ALLOC_GROW(dir->dirs, dir->dirs_nr + 1, dir->dirs_alloc);
696 memmove(dir->dirs + first + 1, dir->dirs + first,
697 (dir->dirs_nr - first) * sizeof(*dir->dirs));
699 dir->dirs[first] = d;
703 static void do_invalidate_gitignore(struct untracked_cache_dir *dir)
707 dir->untracked_nr = 0;
708 for (i = 0; i < dir->dirs_nr; i++)
709 do_invalidate_gitignore(dir->dirs[i]);
712 static void invalidate_gitignore(struct untracked_cache *uc,
713 struct untracked_cache_dir *dir)
715 uc->gitignore_invalidated++;
716 do_invalidate_gitignore(dir);
719 static void invalidate_directory(struct untracked_cache *uc,
720 struct untracked_cache_dir *dir)
723 uc->dir_invalidated++;
725 dir->untracked_nr = 0;
726 for (i = 0; i < dir->dirs_nr; i++)
727 dir->dirs[i]->recurse = 0;
731 * Given a file with name "fname", read it (either from disk, or from
732 * the index if "check_index" is non-zero), parse it and store the
733 * exclude rules in "el".
735 * If "ss" is not NULL, compute SHA-1 of the exclude file and fill
736 * stat data from disk (only valid if add_excludes returns zero). If
737 * ss_valid is non-zero, "ss" must contain good value as input.
739 static int add_excludes(const char *fname, const char *base, int baselen,
740 struct exclude_list *el, int check_index,
741 struct sha1_stat *sha1_stat)
744 int fd, i, lineno = 1;
748 fd = open(fname, O_RDONLY);
749 if (fd < 0 || fstat(fd, &st) < 0) {
751 warn_on_inaccessible(fname);
755 (buf = read_skip_worktree_file_from_index(&the_index, fname, &size, sha1_stat)) == NULL)
761 if (buf[size-1] != '\n') {
762 buf = xrealloc(buf, st_add(size, 1));
766 size = xsize_t(st.st_size);
769 fill_stat_data(&sha1_stat->stat, &st);
770 hashcpy(sha1_stat->sha1, EMPTY_BLOB_SHA1_BIN);
771 sha1_stat->valid = 1;
776 buf = xmallocz(size);
777 if (read_in_full(fd, buf, size) != size) {
786 if (sha1_stat->valid &&
787 !match_stat_data_racy(&the_index, &sha1_stat->stat, &st))
788 ; /* no content change, ss->sha1 still good */
789 else if (check_index &&
790 (pos = index_name_pos(&the_index, fname, strlen(fname))) >= 0 &&
791 !ce_stage(the_index.cache[pos]) &&
792 ce_uptodate(the_index.cache[pos]) &&
793 !would_convert_to_git(fname))
794 hashcpy(sha1_stat->sha1,
795 the_index.cache[pos]->oid.hash);
797 hash_sha1_file(buf, size, "blob", sha1_stat->sha1);
798 fill_stat_data(&sha1_stat->stat, &st);
799 sha1_stat->valid = 1;
805 if (skip_utf8_bom(&buf, size))
806 size -= buf - el->filebuf;
810 for (i = 0; i < size; i++) {
811 if (buf[i] == '\n') {
812 if (entry != buf + i && entry[0] != '#') {
813 buf[i - (i && buf[i-1] == '\r')] = 0;
814 trim_trailing_spaces(entry);
815 add_exclude(entry, base, baselen, el, lineno);
824 int add_excludes_from_file_to_list(const char *fname, const char *base,
825 int baselen, struct exclude_list *el,
828 return add_excludes(fname, base, baselen, el, check_index, NULL);
831 struct exclude_list *add_exclude_list(struct dir_struct *dir,
832 int group_type, const char *src)
834 struct exclude_list *el;
835 struct exclude_list_group *group;
837 group = &dir->exclude_list_group[group_type];
838 ALLOC_GROW(group->el, group->nr + 1, group->alloc);
839 el = &group->el[group->nr++];
840 memset(el, 0, sizeof(*el));
846 * Used to set up core.excludesfile and .git/info/exclude lists.
848 static void add_excludes_from_file_1(struct dir_struct *dir, const char *fname,
849 struct sha1_stat *sha1_stat)
851 struct exclude_list *el;
853 * catch setup_standard_excludes() that's called before
854 * dir->untracked is assigned. That function behaves
855 * differently when dir->untracked is non-NULL.
858 dir->unmanaged_exclude_files++;
859 el = add_exclude_list(dir, EXC_FILE, fname);
860 if (add_excludes(fname, "", 0, el, 0, sha1_stat) < 0)
861 die("cannot use %s as an exclude file", fname);
864 void add_excludes_from_file(struct dir_struct *dir, const char *fname)
866 dir->unmanaged_exclude_files++; /* see validate_untracked_cache() */
867 add_excludes_from_file_1(dir, fname, NULL);
870 int match_basename(const char *basename, int basenamelen,
871 const char *pattern, int prefix, int patternlen,
874 if (prefix == patternlen) {
875 if (patternlen == basenamelen &&
876 !fspathncmp(pattern, basename, basenamelen))
878 } else if (flags & EXC_FLAG_ENDSWITH) {
879 /* "*literal" matching against "fooliteral" */
880 if (patternlen - 1 <= basenamelen &&
881 !fspathncmp(pattern + 1,
882 basename + basenamelen - (patternlen - 1),
886 if (fnmatch_icase_mem(pattern, patternlen,
887 basename, basenamelen,
894 int match_pathname(const char *pathname, int pathlen,
895 const char *base, int baselen,
896 const char *pattern, int prefix, int patternlen,
903 * match with FNM_PATHNAME; the pattern has base implicitly
906 if (*pattern == '/') {
913 * baselen does not count the trailing slash. base[] may or
914 * may not end with a trailing slash though.
916 if (pathlen < baselen + 1 ||
917 (baselen && pathname[baselen] != '/') ||
918 fspathncmp(pathname, base, baselen))
921 namelen = baselen ? pathlen - baselen - 1 : pathlen;
922 name = pathname + pathlen - namelen;
926 * if the non-wildcard part is longer than the
927 * remaining pathname, surely it cannot match.
929 if (prefix > namelen)
932 if (fspathncmp(pattern, name, prefix))
935 patternlen -= prefix;
940 * If the whole pattern did not have a wildcard,
941 * then our prefix match is all we need; we
942 * do not need to call fnmatch at all.
944 if (!patternlen && !namelen)
948 return fnmatch_icase_mem(pattern, patternlen,
954 * Scan the given exclude list in reverse to see whether pathname
955 * should be ignored. The first match (i.e. the last on the list), if
956 * any, determines the fate. Returns the exclude_list element which
957 * matched, or NULL for undecided.
959 static struct exclude *last_exclude_matching_from_list(const char *pathname,
961 const char *basename,
963 struct exclude_list *el)
965 struct exclude *exc = NULL; /* undecided */
969 return NULL; /* undefined */
971 for (i = el->nr - 1; 0 <= i; i--) {
972 struct exclude *x = el->excludes[i];
973 const char *exclude = x->pattern;
974 int prefix = x->nowildcardlen;
976 if (x->flags & EXC_FLAG_MUSTBEDIR) {
977 if (*dtype == DT_UNKNOWN)
978 *dtype = get_dtype(NULL, pathname, pathlen);
979 if (*dtype != DT_DIR)
983 if (x->flags & EXC_FLAG_NODIR) {
984 if (match_basename(basename,
985 pathlen - (basename - pathname),
986 exclude, prefix, x->patternlen,
994 assert(x->baselen == 0 || x->base[x->baselen - 1] == '/');
995 if (match_pathname(pathname, pathlen,
996 x->base, x->baselen ? x->baselen - 1 : 0,
997 exclude, prefix, x->patternlen, x->flags)) {
1006 * Scan the list and let the last match determine the fate.
1007 * Return 1 for exclude, 0 for include and -1 for undecided.
1009 int is_excluded_from_list(const char *pathname,
1010 int pathlen, const char *basename, int *dtype,
1011 struct exclude_list *el)
1013 struct exclude *exclude;
1014 exclude = last_exclude_matching_from_list(pathname, pathlen, basename, dtype, el);
1016 return exclude->flags & EXC_FLAG_NEGATIVE ? 0 : 1;
1017 return -1; /* undecided */
1020 static struct exclude *last_exclude_matching_from_lists(struct dir_struct *dir,
1021 const char *pathname, int pathlen, const char *basename,
1025 struct exclude_list_group *group;
1026 struct exclude *exclude;
1027 for (i = EXC_CMDL; i <= EXC_FILE; i++) {
1028 group = &dir->exclude_list_group[i];
1029 for (j = group->nr - 1; j >= 0; j--) {
1030 exclude = last_exclude_matching_from_list(
1031 pathname, pathlen, basename, dtype_p,
1041 * Loads the per-directory exclude list for the substring of base
1042 * which has a char length of baselen.
1044 static void prep_exclude(struct dir_struct *dir, const char *base, int baselen)
1046 struct exclude_list_group *group;
1047 struct exclude_list *el;
1048 struct exclude_stack *stk = NULL;
1049 struct untracked_cache_dir *untracked;
1052 group = &dir->exclude_list_group[EXC_DIRS];
1055 * Pop the exclude lists from the EXCL_DIRS exclude_list_group
1056 * which originate from directories not in the prefix of the
1057 * path being checked.
1059 while ((stk = dir->exclude_stack) != NULL) {
1060 if (stk->baselen <= baselen &&
1061 !strncmp(dir->basebuf.buf, base, stk->baselen))
1063 el = &group->el[dir->exclude_stack->exclude_ix];
1064 dir->exclude_stack = stk->prev;
1065 dir->exclude = NULL;
1066 free((char *)el->src); /* see strbuf_detach() below */
1067 clear_exclude_list(el);
1072 /* Skip traversing into sub directories if the parent is excluded */
1077 * Lazy initialization. All call sites currently just
1078 * memset(dir, 0, sizeof(*dir)) before use. Changing all of
1079 * them seems lots of work for little benefit.
1081 if (!dir->basebuf.buf)
1082 strbuf_init(&dir->basebuf, PATH_MAX);
1084 /* Read from the parent directories and push them down. */
1085 current = stk ? stk->baselen : -1;
1086 strbuf_setlen(&dir->basebuf, current < 0 ? 0 : current);
1088 untracked = stk ? stk->ucd : dir->untracked->root;
1092 while (current < baselen) {
1094 struct sha1_stat sha1_stat;
1096 stk = xcalloc(1, sizeof(*stk));
1101 cp = strchr(base + current + 1, '/');
1103 die("oops in prep_exclude");
1106 lookup_untracked(dir->untracked, untracked,
1108 cp - base - current);
1110 stk->prev = dir->exclude_stack;
1111 stk->baselen = cp - base;
1112 stk->exclude_ix = group->nr;
1113 stk->ucd = untracked;
1114 el = add_exclude_list(dir, EXC_DIRS, NULL);
1115 strbuf_add(&dir->basebuf, base + current, stk->baselen - current);
1116 assert(stk->baselen == dir->basebuf.len);
1118 /* Abort if the directory is excluded */
1121 dir->basebuf.buf[stk->baselen - 1] = 0;
1122 dir->exclude = last_exclude_matching_from_lists(dir,
1123 dir->basebuf.buf, stk->baselen - 1,
1124 dir->basebuf.buf + current, &dt);
1125 dir->basebuf.buf[stk->baselen - 1] = '/';
1127 dir->exclude->flags & EXC_FLAG_NEGATIVE)
1128 dir->exclude = NULL;
1130 dir->exclude_stack = stk;
1135 /* Try to read per-directory file */
1136 hashclr(sha1_stat.sha1);
1137 sha1_stat.valid = 0;
1138 if (dir->exclude_per_dir &&
1140 * If we know that no files have been added in
1141 * this directory (i.e. valid_cached_dir() has
1142 * been executed and set untracked->valid) ..
1144 (!untracked || !untracked->valid ||
1146 * .. and .gitignore does not exist before
1147 * (i.e. null exclude_sha1). Then we can skip
1148 * loading .gitignore, which would result in
1151 !is_null_sha1(untracked->exclude_sha1))) {
1153 * dir->basebuf gets reused by the traversal, but we
1154 * need fname to remain unchanged to ensure the src
1155 * member of each struct exclude correctly
1156 * back-references its source file. Other invocations
1157 * of add_exclude_list provide stable strings, so we
1158 * strbuf_detach() and free() here in the caller.
1160 struct strbuf sb = STRBUF_INIT;
1161 strbuf_addbuf(&sb, &dir->basebuf);
1162 strbuf_addstr(&sb, dir->exclude_per_dir);
1163 el->src = strbuf_detach(&sb, NULL);
1164 add_excludes(el->src, el->src, stk->baselen, el, 1,
1165 untracked ? &sha1_stat : NULL);
1168 * NEEDSWORK: when untracked cache is enabled, prep_exclude()
1169 * will first be called in valid_cached_dir() then maybe many
1170 * times more in last_exclude_matching(). When the cache is
1171 * used, last_exclude_matching() will not be called and
1172 * reading .gitignore content will be a waste.
1174 * So when it's called by valid_cached_dir() and we can get
1175 * .gitignore SHA-1 from the index (i.e. .gitignore is not
1176 * modified on work tree), we could delay reading the
1177 * .gitignore content until we absolutely need it in
1178 * last_exclude_matching(). Be careful about ignore rule
1179 * order, though, if you do that.
1182 hashcmp(sha1_stat.sha1, untracked->exclude_sha1)) {
1183 invalidate_gitignore(dir->untracked, untracked);
1184 hashcpy(untracked->exclude_sha1, sha1_stat.sha1);
1186 dir->exclude_stack = stk;
1187 current = stk->baselen;
1189 strbuf_setlen(&dir->basebuf, baselen);
1193 * Loads the exclude lists for the directory containing pathname, then
1194 * scans all exclude lists to determine whether pathname is excluded.
1195 * Returns the exclude_list element which matched, or NULL for
1198 struct exclude *last_exclude_matching(struct dir_struct *dir,
1199 const char *pathname,
1202 int pathlen = strlen(pathname);
1203 const char *basename = strrchr(pathname, '/');
1204 basename = (basename) ? basename+1 : pathname;
1206 prep_exclude(dir, pathname, basename-pathname);
1209 return dir->exclude;
1211 return last_exclude_matching_from_lists(dir, pathname, pathlen,
1216 * Loads the exclude lists for the directory containing pathname, then
1217 * scans all exclude lists to determine whether pathname is excluded.
1218 * Returns 1 if true, otherwise 0.
1220 int is_excluded(struct dir_struct *dir, const char *pathname, int *dtype_p)
1222 struct exclude *exclude =
1223 last_exclude_matching(dir, pathname, dtype_p);
1225 return exclude->flags & EXC_FLAG_NEGATIVE ? 0 : 1;
1229 static struct dir_entry *dir_entry_new(const char *pathname, int len)
1231 struct dir_entry *ent;
1233 FLEX_ALLOC_MEM(ent, name, pathname, len);
1238 static struct dir_entry *dir_add_name(struct dir_struct *dir, const char *pathname, int len)
1240 if (index_file_exists(&the_index, pathname, len, ignore_case))
1243 ALLOC_GROW(dir->entries, dir->nr+1, dir->alloc);
1244 return dir->entries[dir->nr++] = dir_entry_new(pathname, len);
1247 struct dir_entry *dir_add_ignored(struct dir_struct *dir, const char *pathname, int len)
1249 if (!index_name_is_other(&the_index, pathname, len))
1252 ALLOC_GROW(dir->ignored, dir->ignored_nr+1, dir->ignored_alloc);
1253 return dir->ignored[dir->ignored_nr++] = dir_entry_new(pathname, len);
1257 index_nonexistent = 0,
1263 * Do not use the alphabetically sorted index to look up
1264 * the directory name; instead, use the case insensitive
1267 static enum exist_status directory_exists_in_index_icase(const char *dirname, int len)
1269 struct cache_entry *ce;
1271 if (index_dir_exists(&the_index, dirname, len))
1272 return index_directory;
1274 ce = index_file_exists(&the_index, dirname, len, ignore_case);
1275 if (ce && S_ISGITLINK(ce->ce_mode))
1276 return index_gitdir;
1278 return index_nonexistent;
1282 * The index sorts alphabetically by entry name, which
1283 * means that a gitlink sorts as '\0' at the end, while
1284 * a directory (which is defined not as an entry, but as
1285 * the files it contains) will sort with the '/' at the
1288 static enum exist_status directory_exists_in_index(const char *dirname, int len)
1293 return directory_exists_in_index_icase(dirname, len);
1295 pos = index_name_pos(&the_index, dirname, len);
1298 while (pos < the_index.cache_nr) {
1299 const struct cache_entry *ce = the_index.cache[pos++];
1300 unsigned char endchar;
1302 if (strncmp(ce->name, dirname, len))
1304 endchar = ce->name[len];
1308 return index_directory;
1309 if (!endchar && S_ISGITLINK(ce->ce_mode))
1310 return index_gitdir;
1312 return index_nonexistent;
1316 * When we find a directory when traversing the filesystem, we
1317 * have three distinct cases:
1320 * - see it as a directory
1323 * and which one we choose depends on a combination of existing
1324 * git index contents and the flags passed into the directory
1325 * traversal routine.
1327 * Case 1: If we *already* have entries in the index under that
1328 * directory name, we always recurse into the directory to see
1331 * Case 2: If we *already* have that directory name as a gitlink,
1332 * we always continue to see it as a gitlink, regardless of whether
1333 * there is an actual git directory there or not (it might not
1334 * be checked out as a subproject!)
1336 * Case 3: if we didn't have it in the index previously, we
1337 * have a few sub-cases:
1339 * (a) if "show_other_directories" is true, we show it as
1340 * just a directory, unless "hide_empty_directories" is
1341 * also true, in which case we need to check if it contains any
1342 * untracked and / or ignored files.
1343 * (b) if it looks like a git directory, and we don't have
1344 * 'no_gitlinks' set we treat it as a gitlink, and show it
1346 * (c) otherwise, we recurse into it.
1348 static enum path_treatment treat_directory(struct dir_struct *dir,
1349 struct untracked_cache_dir *untracked,
1350 const char *dirname, int len, int baselen, int exclude,
1351 const struct pathspec *pathspec)
1353 /* The "len-1" is to strip the final '/' */
1354 switch (directory_exists_in_index(dirname, len-1)) {
1355 case index_directory:
1356 return path_recurse;
1361 case index_nonexistent:
1362 if (dir->flags & DIR_SHOW_OTHER_DIRECTORIES)
1364 if (!(dir->flags & DIR_NO_GITLINKS)) {
1365 unsigned char sha1[20];
1366 if (resolve_gitlink_ref(dirname, "HEAD", sha1) == 0)
1367 return path_untracked;
1369 return path_recurse;
1372 /* This is the "show_other_directories" case */
1374 if (!(dir->flags & DIR_HIDE_EMPTY_DIRECTORIES))
1375 return exclude ? path_excluded : path_untracked;
1377 untracked = lookup_untracked(dir->untracked, untracked,
1378 dirname + baselen, len - baselen);
1379 return read_directory_recursive(dir, dirname, len,
1380 untracked, 1, pathspec);
1384 * This is an inexact early pruning of any recursive directory
1385 * reading - if the path cannot possibly be in the pathspec,
1386 * return true, and we'll skip it early.
1388 static int simplify_away(const char *path, int pathlen,
1389 const struct pathspec *pathspec)
1393 if (!pathspec || !pathspec->nr)
1396 GUARD_PATHSPEC(pathspec,
1405 for (i = 0; i < pathspec->nr; i++) {
1406 const struct pathspec_item *item = &pathspec->items[i];
1407 int len = item->nowildcard_len;
1411 if (!ps_strncmp(item, item->match, path, len))
1419 * This function tells us whether an excluded path matches a
1420 * list of "interesting" pathspecs. That is, whether a path matched
1421 * by any of the pathspecs could possibly be ignored by excluding
1422 * the specified path. This can happen if:
1424 * 1. the path is mentioned explicitly in the pathspec
1426 * 2. the path is a directory prefix of some element in the
1429 static int exclude_matches_pathspec(const char *path, int pathlen,
1430 const struct pathspec *pathspec)
1434 if (!pathspec || !pathspec->nr)
1437 GUARD_PATHSPEC(pathspec,
1445 for (i = 0; i < pathspec->nr; i++) {
1446 const struct pathspec_item *item = &pathspec->items[i];
1447 int len = item->nowildcard_len;
1449 if (len == pathlen &&
1450 !ps_strncmp(item, item->match, path, pathlen))
1452 if (len > pathlen &&
1453 item->match[pathlen] == '/' &&
1454 !ps_strncmp(item, item->match, path, pathlen))
1460 static int get_index_dtype(const char *path, int len)
1463 const struct cache_entry *ce;
1465 ce = index_file_exists(&the_index, path, len, 0);
1467 if (!ce_uptodate(ce))
1469 if (S_ISGITLINK(ce->ce_mode))
1472 * Nobody actually cares about the
1473 * difference between DT_LNK and DT_REG
1478 /* Try to look it up as a directory */
1479 pos = index_name_pos(&the_index, path, len);
1483 while (pos < the_index.cache_nr) {
1484 ce = the_index.cache[pos++];
1485 if (strncmp(ce->name, path, len))
1487 if (ce->name[len] > '/')
1489 if (ce->name[len] < '/')
1491 if (!ce_uptodate(ce))
1492 break; /* continue? */
1498 static int get_dtype(struct dirent *de, const char *path, int len)
1500 int dtype = de ? DTYPE(de) : DT_UNKNOWN;
1503 if (dtype != DT_UNKNOWN)
1505 dtype = get_index_dtype(path, len);
1506 if (dtype != DT_UNKNOWN)
1508 if (lstat(path, &st))
1510 if (S_ISREG(st.st_mode))
1512 if (S_ISDIR(st.st_mode))
1514 if (S_ISLNK(st.st_mode))
1519 static enum path_treatment treat_one_path(struct dir_struct *dir,
1520 struct untracked_cache_dir *untracked,
1521 struct strbuf *path,
1523 const struct pathspec *pathspec,
1524 int dtype, struct dirent *de)
1527 int has_path_in_index = !!index_file_exists(&the_index, path->buf, path->len, ignore_case);
1529 if (dtype == DT_UNKNOWN)
1530 dtype = get_dtype(de, path->buf, path->len);
1532 /* Always exclude indexed files */
1533 if (dtype != DT_DIR && has_path_in_index)
1537 * When we are looking at a directory P in the working tree,
1538 * there are three cases:
1540 * (1) P exists in the index. Everything inside the directory P in
1541 * the working tree needs to go when P is checked out from the
1544 * (2) P does not exist in the index, but there is P/Q in the index.
1545 * We know P will stay a directory when we check out the contents
1546 * of the index, but we do not know yet if there is a directory
1547 * P/Q in the working tree to be killed, so we need to recurse.
1549 * (3) P does not exist in the index, and there is no P/Q in the index
1550 * to require P to be a directory, either. Only in this case, we
1551 * know that everything inside P will not be killed without
1554 if ((dir->flags & DIR_COLLECT_KILLED_ONLY) &&
1555 (dtype == DT_DIR) &&
1556 !has_path_in_index &&
1557 (directory_exists_in_index(path->buf, path->len) == index_nonexistent))
1560 exclude = is_excluded(dir, path->buf, &dtype);
1563 * Excluded? If we don't explicitly want to show
1564 * ignored files, ignore it
1566 if (exclude && !(dir->flags & (DIR_SHOW_IGNORED|DIR_SHOW_IGNORED_TOO)))
1567 return path_excluded;
1573 strbuf_addch(path, '/');
1574 return treat_directory(dir, untracked, path->buf, path->len,
1575 baselen, exclude, pathspec);
1578 return exclude ? path_excluded : path_untracked;
1582 static enum path_treatment treat_path_fast(struct dir_struct *dir,
1583 struct untracked_cache_dir *untracked,
1584 struct cached_dir *cdir,
1585 struct strbuf *path,
1587 const struct pathspec *pathspec)
1589 strbuf_setlen(path, baselen);
1591 strbuf_addstr(path, cdir->file);
1592 return path_untracked;
1594 strbuf_addstr(path, cdir->ucd->name);
1595 /* treat_one_path() does this before it calls treat_directory() */
1596 strbuf_complete(path, '/');
1597 if (cdir->ucd->check_only)
1599 * check_only is set as a result of treat_directory() getting
1600 * to its bottom. Verify again the same set of directories
1601 * with check_only set.
1603 return read_directory_recursive(dir, path->buf, path->len,
1604 cdir->ucd, 1, pathspec);
1606 * We get path_recurse in the first run when
1607 * directory_exists_in_index() returns index_nonexistent. We
1608 * are sure that new changes in the index does not impact the
1609 * outcome. Return now.
1611 return path_recurse;
1614 static enum path_treatment treat_path(struct dir_struct *dir,
1615 struct untracked_cache_dir *untracked,
1616 struct cached_dir *cdir,
1617 struct strbuf *path,
1619 const struct pathspec *pathspec)
1622 struct dirent *de = cdir->de;
1625 return treat_path_fast(dir, untracked, cdir, path,
1627 if (is_dot_or_dotdot(de->d_name) || !strcmp(de->d_name, ".git"))
1629 strbuf_setlen(path, baselen);
1630 strbuf_addstr(path, de->d_name);
1631 if (simplify_away(path->buf, path->len, pathspec))
1635 return treat_one_path(dir, untracked, path, baselen, pathspec, dtype, de);
1638 static void add_untracked(struct untracked_cache_dir *dir, const char *name)
1642 ALLOC_GROW(dir->untracked, dir->untracked_nr + 1,
1643 dir->untracked_alloc);
1644 dir->untracked[dir->untracked_nr++] = xstrdup(name);
1647 static int valid_cached_dir(struct dir_struct *dir,
1648 struct untracked_cache_dir *untracked,
1649 struct strbuf *path,
1657 if (stat(path->len ? path->buf : ".", &st)) {
1658 invalidate_directory(dir->untracked, untracked);
1659 memset(&untracked->stat_data, 0, sizeof(untracked->stat_data));
1662 if (!untracked->valid ||
1663 match_stat_data_racy(&the_index, &untracked->stat_data, &st)) {
1664 if (untracked->valid)
1665 invalidate_directory(dir->untracked, untracked);
1666 fill_stat_data(&untracked->stat_data, &st);
1670 if (untracked->check_only != !!check_only) {
1671 invalidate_directory(dir->untracked, untracked);
1676 * prep_exclude will be called eventually on this directory,
1677 * but it's called much later in last_exclude_matching(). We
1678 * need it now to determine the validity of the cache for this
1679 * path. The next calls will be nearly no-op, the way
1680 * prep_exclude() is designed.
1682 if (path->len && path->buf[path->len - 1] != '/') {
1683 strbuf_addch(path, '/');
1684 prep_exclude(dir, path->buf, path->len);
1685 strbuf_setlen(path, path->len - 1);
1687 prep_exclude(dir, path->buf, path->len);
1689 /* hopefully prep_exclude() haven't invalidated this entry... */
1690 return untracked->valid;
1693 static int open_cached_dir(struct cached_dir *cdir,
1694 struct dir_struct *dir,
1695 struct untracked_cache_dir *untracked,
1696 struct strbuf *path,
1699 memset(cdir, 0, sizeof(*cdir));
1700 cdir->untracked = untracked;
1701 if (valid_cached_dir(dir, untracked, path, check_only))
1703 cdir->fdir = opendir(path->len ? path->buf : ".");
1705 dir->untracked->dir_opened++;
1711 static int read_cached_dir(struct cached_dir *cdir)
1714 cdir->de = readdir(cdir->fdir);
1719 while (cdir->nr_dirs < cdir->untracked->dirs_nr) {
1720 struct untracked_cache_dir *d = cdir->untracked->dirs[cdir->nr_dirs];
1730 if (cdir->nr_files < cdir->untracked->untracked_nr) {
1731 struct untracked_cache_dir *d = cdir->untracked;
1732 cdir->file = d->untracked[cdir->nr_files++];
1738 static void close_cached_dir(struct cached_dir *cdir)
1741 closedir(cdir->fdir);
1743 * We have gone through this directory and found no untracked
1744 * entries. Mark it valid.
1746 if (cdir->untracked) {
1747 cdir->untracked->valid = 1;
1748 cdir->untracked->recurse = 1;
1753 * Read a directory tree. We currently ignore anything but
1754 * directories, regular files and symlinks. That's because git
1755 * doesn't handle them at all yet. Maybe that will change some
1758 * Also, we ignore the name ".git" (even if it is not a directory).
1759 * That likely will not change.
1761 * Returns the most significant path_treatment value encountered in the scan.
1763 static enum path_treatment read_directory_recursive(struct dir_struct *dir,
1764 const char *base, int baselen,
1765 struct untracked_cache_dir *untracked, int check_only,
1766 const struct pathspec *pathspec)
1768 struct cached_dir cdir;
1769 enum path_treatment state, subdir_state, dir_state = path_none;
1770 struct strbuf path = STRBUF_INIT;
1772 strbuf_add(&path, base, baselen);
1774 if (open_cached_dir(&cdir, dir, untracked, &path, check_only))
1778 untracked->check_only = !!check_only;
1780 while (!read_cached_dir(&cdir)) {
1781 /* check how the file or directory should be treated */
1782 state = treat_path(dir, untracked, &cdir, &path,
1785 if (state > dir_state)
1788 /* recurse into subdir if instructed by treat_path */
1789 if (state == path_recurse) {
1790 struct untracked_cache_dir *ud;
1791 ud = lookup_untracked(dir->untracked, untracked,
1793 path.len - baselen);
1795 read_directory_recursive(dir, path.buf,
1797 check_only, pathspec);
1798 if (subdir_state > dir_state)
1799 dir_state = subdir_state;
1803 /* abort early if maximum state has been reached */
1804 if (dir_state == path_untracked) {
1806 add_untracked(untracked, path.buf + baselen);
1809 /* skip the dir_add_* part */
1813 /* add the path to the appropriate result list */
1816 if (dir->flags & DIR_SHOW_IGNORED)
1817 dir_add_name(dir, path.buf, path.len);
1818 else if ((dir->flags & DIR_SHOW_IGNORED_TOO) ||
1819 ((dir->flags & DIR_COLLECT_IGNORED) &&
1820 exclude_matches_pathspec(path.buf, path.len,
1822 dir_add_ignored(dir, path.buf, path.len);
1825 case path_untracked:
1826 if (dir->flags & DIR_SHOW_IGNORED)
1828 dir_add_name(dir, path.buf, path.len);
1830 add_untracked(untracked, path.buf + baselen);
1837 close_cached_dir(&cdir);
1839 strbuf_release(&path);
1844 static int cmp_name(const void *p1, const void *p2)
1846 const struct dir_entry *e1 = *(const struct dir_entry **)p1;
1847 const struct dir_entry *e2 = *(const struct dir_entry **)p2;
1849 return name_compare(e1->name, e1->len, e2->name, e2->len);
1852 static int treat_leading_path(struct dir_struct *dir,
1853 const char *path, int len,
1854 const struct pathspec *pathspec)
1856 struct strbuf sb = STRBUF_INIT;
1857 int baselen, rc = 0;
1859 int old_flags = dir->flags;
1861 while (len && path[len - 1] == '/')
1866 dir->flags &= ~DIR_SHOW_OTHER_DIRECTORIES;
1868 cp = path + baselen + !!baselen;
1869 cp = memchr(cp, '/', path + len - cp);
1873 baselen = cp - path;
1874 strbuf_setlen(&sb, 0);
1875 strbuf_add(&sb, path, baselen);
1876 if (!is_directory(sb.buf))
1878 if (simplify_away(sb.buf, sb.len, pathspec))
1880 if (treat_one_path(dir, NULL, &sb, baselen, pathspec,
1881 DT_DIR, NULL) == path_none)
1882 break; /* do not recurse into it */
1883 if (len <= baselen) {
1885 break; /* finished checking */
1888 strbuf_release(&sb);
1889 dir->flags = old_flags;
1893 static const char *get_ident_string(void)
1895 static struct strbuf sb = STRBUF_INIT;
1900 if (uname(&uts) < 0)
1901 die_errno(_("failed to get kernel name and information"));
1902 strbuf_addf(&sb, "Location %s, system %s", get_git_work_tree(),
1907 static int ident_in_untracked(const struct untracked_cache *uc)
1910 * Previous git versions may have saved many NUL separated
1911 * strings in the "ident" field, but it is insane to manage
1912 * many locations, so just take care of the first one.
1915 return !strcmp(uc->ident.buf, get_ident_string());
1918 static void set_untracked_ident(struct untracked_cache *uc)
1920 strbuf_reset(&uc->ident);
1921 strbuf_addstr(&uc->ident, get_ident_string());
1924 * This strbuf used to contain a list of NUL separated
1925 * strings, so save NUL too for backward compatibility.
1927 strbuf_addch(&uc->ident, 0);
1930 static void new_untracked_cache(struct index_state *istate)
1932 struct untracked_cache *uc = xcalloc(1, sizeof(*uc));
1933 strbuf_init(&uc->ident, 100);
1934 uc->exclude_per_dir = ".gitignore";
1935 /* should be the same flags used by git-status */
1936 uc->dir_flags = DIR_SHOW_OTHER_DIRECTORIES | DIR_HIDE_EMPTY_DIRECTORIES;
1937 set_untracked_ident(uc);
1938 istate->untracked = uc;
1939 istate->cache_changed |= UNTRACKED_CHANGED;
1942 void add_untracked_cache(struct index_state *istate)
1944 if (!istate->untracked) {
1945 new_untracked_cache(istate);
1947 if (!ident_in_untracked(istate->untracked)) {
1948 free_untracked_cache(istate->untracked);
1949 new_untracked_cache(istate);
1954 void remove_untracked_cache(struct index_state *istate)
1956 if (istate->untracked) {
1957 free_untracked_cache(istate->untracked);
1958 istate->untracked = NULL;
1959 istate->cache_changed |= UNTRACKED_CHANGED;
1963 static struct untracked_cache_dir *validate_untracked_cache(struct dir_struct *dir,
1965 const struct pathspec *pathspec)
1967 struct untracked_cache_dir *root;
1969 if (!dir->untracked || getenv("GIT_DISABLE_UNTRACKED_CACHE"))
1973 * We only support $GIT_DIR/info/exclude and core.excludesfile
1974 * as the global ignore rule files. Any other additions
1975 * (e.g. from command line) invalidate the cache. This
1976 * condition also catches running setup_standard_excludes()
1977 * before setting dir->untracked!
1979 if (dir->unmanaged_exclude_files)
1983 * Optimize for the main use case only: whole-tree git
1984 * status. More work involved in treat_leading_path() if we
1985 * use cache on just a subset of the worktree. pathspec
1986 * support could make the matter even worse.
1988 if (base_len || (pathspec && pathspec->nr))
1991 /* Different set of flags may produce different results */
1992 if (dir->flags != dir->untracked->dir_flags ||
1994 * See treat_directory(), case index_nonexistent. Without
1995 * this flag, we may need to also cache .git file content
1996 * for the resolve_gitlink_ref() call, which we don't.
1998 !(dir->flags & DIR_SHOW_OTHER_DIRECTORIES) ||
1999 /* We don't support collecting ignore files */
2000 (dir->flags & (DIR_SHOW_IGNORED | DIR_SHOW_IGNORED_TOO |
2001 DIR_COLLECT_IGNORED)))
2005 * If we use .gitignore in the cache and now you change it to
2006 * .gitexclude, everything will go wrong.
2008 if (dir->exclude_per_dir != dir->untracked->exclude_per_dir &&
2009 strcmp(dir->exclude_per_dir, dir->untracked->exclude_per_dir))
2013 * EXC_CMDL is not considered in the cache. If people set it,
2016 if (dir->exclude_list_group[EXC_CMDL].nr)
2019 if (!ident_in_untracked(dir->untracked)) {
2020 warning(_("Untracked cache is disabled on this system or location."));
2024 if (!dir->untracked->root) {
2025 const int len = sizeof(*dir->untracked->root);
2026 dir->untracked->root = xmalloc(len);
2027 memset(dir->untracked->root, 0, len);
2030 /* Validate $GIT_DIR/info/exclude and core.excludesfile */
2031 root = dir->untracked->root;
2032 if (hashcmp(dir->ss_info_exclude.sha1,
2033 dir->untracked->ss_info_exclude.sha1)) {
2034 invalidate_gitignore(dir->untracked, root);
2035 dir->untracked->ss_info_exclude = dir->ss_info_exclude;
2037 if (hashcmp(dir->ss_excludes_file.sha1,
2038 dir->untracked->ss_excludes_file.sha1)) {
2039 invalidate_gitignore(dir->untracked, root);
2040 dir->untracked->ss_excludes_file = dir->ss_excludes_file;
2043 /* Make sure this directory is not dropped out at saving phase */
2048 int read_directory(struct dir_struct *dir, const char *path,
2049 int len, const struct pathspec *pathspec)
2051 struct untracked_cache_dir *untracked;
2053 if (has_symlink_leading_path(path, len))
2056 untracked = validate_untracked_cache(dir, len, pathspec);
2059 * make sure untracked cache code path is disabled,
2060 * e.g. prep_exclude()
2062 dir->untracked = NULL;
2063 if (!len || treat_leading_path(dir, path, len, pathspec))
2064 read_directory_recursive(dir, path, len, untracked, 0, pathspec);
2065 QSORT(dir->entries, dir->nr, cmp_name);
2066 QSORT(dir->ignored, dir->ignored_nr, cmp_name);
2067 if (dir->untracked) {
2068 static struct trace_key trace_untracked_stats = TRACE_KEY_INIT(UNTRACKED_STATS);
2069 trace_printf_key(&trace_untracked_stats,
2070 "node creation: %u\n"
2071 "gitignore invalidation: %u\n"
2072 "directory invalidation: %u\n"
2074 dir->untracked->dir_created,
2075 dir->untracked->gitignore_invalidated,
2076 dir->untracked->dir_invalidated,
2077 dir->untracked->dir_opened);
2078 if (dir->untracked == the_index.untracked &&
2079 (dir->untracked->dir_opened ||
2080 dir->untracked->gitignore_invalidated ||
2081 dir->untracked->dir_invalidated))
2082 the_index.cache_changed |= UNTRACKED_CHANGED;
2083 if (dir->untracked != the_index.untracked) {
2084 free(dir->untracked);
2085 dir->untracked = NULL;
2091 int file_exists(const char *f)
2094 return lstat(f, &sb) == 0;
2097 static int cmp_icase(char a, char b)
2102 return toupper(a) - toupper(b);
2107 * Given two normalized paths (a trailing slash is ok), if subdir is
2108 * outside dir, return -1. Otherwise return the offset in subdir that
2109 * can be used as relative path to dir.
2111 int dir_inside_of(const char *subdir, const char *dir)
2115 assert(dir && subdir && *dir && *subdir);
2117 while (*dir && *subdir && !cmp_icase(*dir, *subdir)) {
2123 /* hel[p]/me vs hel[l]/yeah */
2124 if (*dir && *subdir)
2128 return !*dir ? offset : -1; /* same dir */
2130 /* foo/[b]ar vs foo/[] */
2131 if (is_dir_sep(dir[-1]))
2132 return is_dir_sep(subdir[-1]) ? offset : -1;
2134 /* foo[/]bar vs foo[] */
2135 return is_dir_sep(*subdir) ? offset + 1 : -1;
2138 int is_inside_dir(const char *dir)
2147 rc = (dir_inside_of(cwd, dir) >= 0);
2152 int is_empty_dir(const char *path)
2154 DIR *dir = opendir(path);
2161 while ((e = readdir(dir)) != NULL)
2162 if (!is_dot_or_dotdot(e->d_name)) {
2171 static int remove_dir_recurse(struct strbuf *path, int flag, int *kept_up)
2175 int ret = 0, original_len = path->len, len, kept_down = 0;
2176 int only_empty = (flag & REMOVE_DIR_EMPTY_ONLY);
2177 int keep_toplevel = (flag & REMOVE_DIR_KEEP_TOPLEVEL);
2178 unsigned char submodule_head[20];
2180 if ((flag & REMOVE_DIR_KEEP_NESTED_GIT) &&
2181 !resolve_gitlink_ref(path->buf, "HEAD", submodule_head)) {
2182 /* Do not descend and nuke a nested git work tree. */
2188 flag &= ~REMOVE_DIR_KEEP_TOPLEVEL;
2189 dir = opendir(path->buf);
2191 if (errno == ENOENT)
2192 return keep_toplevel ? -1 : 0;
2193 else if (errno == EACCES && !keep_toplevel)
2195 * An empty dir could be removable even if it
2198 return rmdir(path->buf);
2202 strbuf_complete(path, '/');
2205 while ((e = readdir(dir)) != NULL) {
2207 if (is_dot_or_dotdot(e->d_name))
2210 strbuf_setlen(path, len);
2211 strbuf_addstr(path, e->d_name);
2212 if (lstat(path->buf, &st)) {
2213 if (errno == ENOENT)
2215 * file disappeared, which is what we
2220 } else if (S_ISDIR(st.st_mode)) {
2221 if (!remove_dir_recurse(path, flag, &kept_down))
2222 continue; /* happy */
2223 } else if (!only_empty &&
2224 (!unlink(path->buf) || errno == ENOENT)) {
2225 continue; /* happy, too */
2228 /* path too long, stat fails, or non-directory still exists */
2234 strbuf_setlen(path, original_len);
2235 if (!ret && !keep_toplevel && !kept_down)
2236 ret = (!rmdir(path->buf) || errno == ENOENT) ? 0 : -1;
2239 * report the uplevel that it is not an error that we
2240 * did not rmdir() our directory.
2246 int remove_dir_recursively(struct strbuf *path, int flag)
2248 return remove_dir_recurse(path, flag, NULL);
2251 static GIT_PATH_FUNC(git_path_info_exclude, "info/exclude")
2253 void setup_standard_excludes(struct dir_struct *dir)
2255 dir->exclude_per_dir = ".gitignore";
2257 /* core.excludefile defaulting to $XDG_HOME/git/ignore */
2259 excludes_file = xdg_config_home("ignore");
2260 if (excludes_file && !access_or_warn(excludes_file, R_OK, 0))
2261 add_excludes_from_file_1(dir, excludes_file,
2262 dir->untracked ? &dir->ss_excludes_file : NULL);
2264 /* per repository user preference */
2265 if (startup_info->have_repository) {
2266 const char *path = git_path_info_exclude();
2267 if (!access_or_warn(path, R_OK, 0))
2268 add_excludes_from_file_1(dir, path,
2269 dir->untracked ? &dir->ss_info_exclude : NULL);
2273 int remove_path(const char *name)
2277 if (unlink(name) && errno != ENOENT && errno != ENOTDIR)
2280 slash = strrchr(name, '/');
2282 char *dirs = xstrdup(name);
2283 slash = dirs + (slash - name);
2286 } while (rmdir(dirs) == 0 && (slash = strrchr(dirs, '/')));
2293 * Frees memory within dir which was allocated for exclude lists and
2294 * the exclude_stack. Does not free dir itself.
2296 void clear_directory(struct dir_struct *dir)
2299 struct exclude_list_group *group;
2300 struct exclude_list *el;
2301 struct exclude_stack *stk;
2303 for (i = EXC_CMDL; i <= EXC_FILE; i++) {
2304 group = &dir->exclude_list_group[i];
2305 for (j = 0; j < group->nr; j++) {
2308 free((char *)el->src);
2309 clear_exclude_list(el);
2314 stk = dir->exclude_stack;
2316 struct exclude_stack *prev = stk->prev;
2320 strbuf_release(&dir->basebuf);
2323 struct ondisk_untracked_cache {
2324 struct stat_data info_exclude_stat;
2325 struct stat_data excludes_file_stat;
2327 unsigned char info_exclude_sha1[20];
2328 unsigned char excludes_file_sha1[20];
2329 char exclude_per_dir[FLEX_ARRAY];
2332 #define ouc_size(len) (offsetof(struct ondisk_untracked_cache, exclude_per_dir) + len + 1)
2335 int index; /* number of written untracked_cache_dir */
2336 struct ewah_bitmap *check_only; /* from untracked_cache_dir */
2337 struct ewah_bitmap *valid; /* from untracked_cache_dir */
2338 struct ewah_bitmap *sha1_valid; /* set if exclude_sha1 is not null */
2340 struct strbuf sb_stat;
2341 struct strbuf sb_sha1;
2344 static void stat_data_to_disk(struct stat_data *to, const struct stat_data *from)
2346 to->sd_ctime.sec = htonl(from->sd_ctime.sec);
2347 to->sd_ctime.nsec = htonl(from->sd_ctime.nsec);
2348 to->sd_mtime.sec = htonl(from->sd_mtime.sec);
2349 to->sd_mtime.nsec = htonl(from->sd_mtime.nsec);
2350 to->sd_dev = htonl(from->sd_dev);
2351 to->sd_ino = htonl(from->sd_ino);
2352 to->sd_uid = htonl(from->sd_uid);
2353 to->sd_gid = htonl(from->sd_gid);
2354 to->sd_size = htonl(from->sd_size);
2357 static void write_one_dir(struct untracked_cache_dir *untracked,
2358 struct write_data *wd)
2360 struct stat_data stat_data;
2361 struct strbuf *out = &wd->out;
2362 unsigned char intbuf[16];
2363 unsigned int intlen, value;
2364 int i = wd->index++;
2367 * untracked_nr should be reset whenever valid is clear, but
2370 if (!untracked->valid) {
2371 untracked->untracked_nr = 0;
2372 untracked->check_only = 0;
2375 if (untracked->check_only)
2376 ewah_set(wd->check_only, i);
2377 if (untracked->valid) {
2378 ewah_set(wd->valid, i);
2379 stat_data_to_disk(&stat_data, &untracked->stat_data);
2380 strbuf_add(&wd->sb_stat, &stat_data, sizeof(stat_data));
2382 if (!is_null_sha1(untracked->exclude_sha1)) {
2383 ewah_set(wd->sha1_valid, i);
2384 strbuf_add(&wd->sb_sha1, untracked->exclude_sha1, 20);
2387 intlen = encode_varint(untracked->untracked_nr, intbuf);
2388 strbuf_add(out, intbuf, intlen);
2390 /* skip non-recurse directories */
2391 for (i = 0, value = 0; i < untracked->dirs_nr; i++)
2392 if (untracked->dirs[i]->recurse)
2394 intlen = encode_varint(value, intbuf);
2395 strbuf_add(out, intbuf, intlen);
2397 strbuf_add(out, untracked->name, strlen(untracked->name) + 1);
2399 for (i = 0; i < untracked->untracked_nr; i++)
2400 strbuf_add(out, untracked->untracked[i],
2401 strlen(untracked->untracked[i]) + 1);
2403 for (i = 0; i < untracked->dirs_nr; i++)
2404 if (untracked->dirs[i]->recurse)
2405 write_one_dir(untracked->dirs[i], wd);
2408 void write_untracked_extension(struct strbuf *out, struct untracked_cache *untracked)
2410 struct ondisk_untracked_cache *ouc;
2411 struct write_data wd;
2412 unsigned char varbuf[16];
2414 size_t len = strlen(untracked->exclude_per_dir);
2416 FLEX_ALLOC_MEM(ouc, exclude_per_dir, untracked->exclude_per_dir, len);
2417 stat_data_to_disk(&ouc->info_exclude_stat, &untracked->ss_info_exclude.stat);
2418 stat_data_to_disk(&ouc->excludes_file_stat, &untracked->ss_excludes_file.stat);
2419 hashcpy(ouc->info_exclude_sha1, untracked->ss_info_exclude.sha1);
2420 hashcpy(ouc->excludes_file_sha1, untracked->ss_excludes_file.sha1);
2421 ouc->dir_flags = htonl(untracked->dir_flags);
2423 varint_len = encode_varint(untracked->ident.len, varbuf);
2424 strbuf_add(out, varbuf, varint_len);
2425 strbuf_addbuf(out, &untracked->ident);
2427 strbuf_add(out, ouc, ouc_size(len));
2431 if (!untracked->root) {
2432 varint_len = encode_varint(0, varbuf);
2433 strbuf_add(out, varbuf, varint_len);
2438 wd.check_only = ewah_new();
2439 wd.valid = ewah_new();
2440 wd.sha1_valid = ewah_new();
2441 strbuf_init(&wd.out, 1024);
2442 strbuf_init(&wd.sb_stat, 1024);
2443 strbuf_init(&wd.sb_sha1, 1024);
2444 write_one_dir(untracked->root, &wd);
2446 varint_len = encode_varint(wd.index, varbuf);
2447 strbuf_add(out, varbuf, varint_len);
2448 strbuf_addbuf(out, &wd.out);
2449 ewah_serialize_strbuf(wd.valid, out);
2450 ewah_serialize_strbuf(wd.check_only, out);
2451 ewah_serialize_strbuf(wd.sha1_valid, out);
2452 strbuf_addbuf(out, &wd.sb_stat);
2453 strbuf_addbuf(out, &wd.sb_sha1);
2454 strbuf_addch(out, '\0'); /* safe guard for string lists */
2456 ewah_free(wd.valid);
2457 ewah_free(wd.check_only);
2458 ewah_free(wd.sha1_valid);
2459 strbuf_release(&wd.out);
2460 strbuf_release(&wd.sb_stat);
2461 strbuf_release(&wd.sb_sha1);
2464 static void free_untracked(struct untracked_cache_dir *ucd)
2469 for (i = 0; i < ucd->dirs_nr; i++)
2470 free_untracked(ucd->dirs[i]);
2471 for (i = 0; i < ucd->untracked_nr; i++)
2472 free(ucd->untracked[i]);
2473 free(ucd->untracked);
2478 void free_untracked_cache(struct untracked_cache *uc)
2481 free_untracked(uc->root);
2487 struct untracked_cache_dir **ucd;
2488 struct ewah_bitmap *check_only;
2489 struct ewah_bitmap *valid;
2490 struct ewah_bitmap *sha1_valid;
2491 const unsigned char *data;
2492 const unsigned char *end;
2495 static void stat_data_from_disk(struct stat_data *to, const struct stat_data *from)
2497 to->sd_ctime.sec = get_be32(&from->sd_ctime.sec);
2498 to->sd_ctime.nsec = get_be32(&from->sd_ctime.nsec);
2499 to->sd_mtime.sec = get_be32(&from->sd_mtime.sec);
2500 to->sd_mtime.nsec = get_be32(&from->sd_mtime.nsec);
2501 to->sd_dev = get_be32(&from->sd_dev);
2502 to->sd_ino = get_be32(&from->sd_ino);
2503 to->sd_uid = get_be32(&from->sd_uid);
2504 to->sd_gid = get_be32(&from->sd_gid);
2505 to->sd_size = get_be32(&from->sd_size);
2508 static int read_one_dir(struct untracked_cache_dir **untracked_,
2509 struct read_data *rd)
2511 struct untracked_cache_dir ud, *untracked;
2512 const unsigned char *next, *data = rd->data, *end = rd->end;
2516 memset(&ud, 0, sizeof(ud));
2519 value = decode_varint(&next);
2523 ud.untracked_alloc = value;
2524 ud.untracked_nr = value;
2525 if (ud.untracked_nr)
2526 ALLOC_ARRAY(ud.untracked, ud.untracked_nr);
2530 ud.dirs_alloc = ud.dirs_nr = decode_varint(&next);
2533 ALLOC_ARRAY(ud.dirs, ud.dirs_nr);
2536 len = strlen((const char *)data);
2537 next = data + len + 1;
2540 *untracked_ = untracked = xmalloc(st_add(sizeof(*untracked), len));
2541 memcpy(untracked, &ud, sizeof(ud));
2542 memcpy(untracked->name, data, len + 1);
2545 for (i = 0; i < untracked->untracked_nr; i++) {
2546 len = strlen((const char *)data);
2547 next = data + len + 1;
2550 untracked->untracked[i] = xstrdup((const char*)data);
2554 rd->ucd[rd->index++] = untracked;
2557 for (i = 0; i < untracked->dirs_nr; i++) {
2558 len = read_one_dir(untracked->dirs + i, rd);
2565 static void set_check_only(size_t pos, void *cb)
2567 struct read_data *rd = cb;
2568 struct untracked_cache_dir *ud = rd->ucd[pos];
2572 static void read_stat(size_t pos, void *cb)
2574 struct read_data *rd = cb;
2575 struct untracked_cache_dir *ud = rd->ucd[pos];
2576 if (rd->data + sizeof(struct stat_data) > rd->end) {
2577 rd->data = rd->end + 1;
2580 stat_data_from_disk(&ud->stat_data, (struct stat_data *)rd->data);
2581 rd->data += sizeof(struct stat_data);
2585 static void read_sha1(size_t pos, void *cb)
2587 struct read_data *rd = cb;
2588 struct untracked_cache_dir *ud = rd->ucd[pos];
2589 if (rd->data + 20 > rd->end) {
2590 rd->data = rd->end + 1;
2593 hashcpy(ud->exclude_sha1, rd->data);
2597 static void load_sha1_stat(struct sha1_stat *sha1_stat,
2598 const struct stat_data *stat,
2599 const unsigned char *sha1)
2601 stat_data_from_disk(&sha1_stat->stat, stat);
2602 hashcpy(sha1_stat->sha1, sha1);
2603 sha1_stat->valid = 1;
2606 struct untracked_cache *read_untracked_extension(const void *data, unsigned long sz)
2608 const struct ondisk_untracked_cache *ouc;
2609 struct untracked_cache *uc;
2610 struct read_data rd;
2611 const unsigned char *next = data, *end = (const unsigned char *)data + sz;
2615 if (sz <= 1 || end[-1] != '\0')
2619 ident_len = decode_varint(&next);
2620 if (next + ident_len > end)
2622 ident = (const char *)next;
2625 ouc = (const struct ondisk_untracked_cache *)next;
2626 if (next + ouc_size(0) > end)
2629 uc = xcalloc(1, sizeof(*uc));
2630 strbuf_init(&uc->ident, ident_len);
2631 strbuf_add(&uc->ident, ident, ident_len);
2632 load_sha1_stat(&uc->ss_info_exclude, &ouc->info_exclude_stat,
2633 ouc->info_exclude_sha1);
2634 load_sha1_stat(&uc->ss_excludes_file, &ouc->excludes_file_stat,
2635 ouc->excludes_file_sha1);
2636 uc->dir_flags = get_be32(&ouc->dir_flags);
2637 uc->exclude_per_dir = xstrdup(ouc->exclude_per_dir);
2638 /* NUL after exclude_per_dir is covered by sizeof(*ouc) */
2639 next += ouc_size(strlen(ouc->exclude_per_dir));
2643 len = decode_varint(&next);
2644 if (next > end || len == 0)
2647 rd.valid = ewah_new();
2648 rd.check_only = ewah_new();
2649 rd.sha1_valid = ewah_new();
2653 ALLOC_ARRAY(rd.ucd, len);
2655 if (read_one_dir(&uc->root, &rd) || rd.index != len)
2659 len = ewah_read_mmap(rd.valid, next, end - next);
2664 len = ewah_read_mmap(rd.check_only, next, end - next);
2669 len = ewah_read_mmap(rd.sha1_valid, next, end - next);
2673 ewah_each_bit(rd.check_only, set_check_only, &rd);
2674 rd.data = next + len;
2675 ewah_each_bit(rd.valid, read_stat, &rd);
2676 ewah_each_bit(rd.sha1_valid, read_sha1, &rd);
2681 ewah_free(rd.valid);
2682 ewah_free(rd.check_only);
2683 ewah_free(rd.sha1_valid);
2686 free_untracked_cache(uc);
2692 static void invalidate_one_directory(struct untracked_cache *uc,
2693 struct untracked_cache_dir *ucd)
2695 uc->dir_invalidated++;
2697 ucd->untracked_nr = 0;
2701 * Normally when an entry is added or removed from a directory,
2702 * invalidating that directory is enough. No need to touch its
2703 * ancestors. When a directory is shown as "foo/bar/" in git-status
2704 * however, deleting or adding an entry may have cascading effect.
2706 * Say the "foo/bar/file" has become untracked, we need to tell the
2707 * untracked_cache_dir of "foo" that "bar/" is not an untracked
2708 * directory any more (because "bar" is managed by foo as an untracked
2711 * Similarly, if "foo/bar/file" moves from untracked to tracked and it
2712 * was the last untracked entry in the entire "foo", we should show
2713 * "foo/" instead. Which means we have to invalidate past "bar" up to
2716 * This function traverses all directories from root to leaf. If there
2717 * is a chance of one of the above cases happening, we invalidate back
2718 * to root. Otherwise we just invalidate the leaf. There may be a more
2719 * sophisticated way than checking for SHOW_OTHER_DIRECTORIES to
2720 * detect these cases and avoid unnecessary invalidation, for example,
2721 * checking for the untracked entry named "bar/" in "foo", but for now
2722 * stick to something safe and simple.
2724 static int invalidate_one_component(struct untracked_cache *uc,
2725 struct untracked_cache_dir *dir,
2726 const char *path, int len)
2728 const char *rest = strchr(path, '/');
2731 int component_len = rest - path;
2732 struct untracked_cache_dir *d =
2733 lookup_untracked(uc, dir, path, component_len);
2735 invalidate_one_component(uc, d, rest + 1,
2736 len - (component_len + 1));
2738 invalidate_one_directory(uc, dir);
2742 invalidate_one_directory(uc, dir);
2743 return uc->dir_flags & DIR_SHOW_OTHER_DIRECTORIES;
2746 void untracked_cache_invalidate_path(struct index_state *istate,
2749 if (!istate->untracked || !istate->untracked->root)
2751 invalidate_one_component(istate->untracked, istate->untracked->root,
2752 path, strlen(path));
2755 void untracked_cache_remove_from_index(struct index_state *istate,
2758 untracked_cache_invalidate_path(istate, path);
2761 void untracked_cache_add_to_index(struct index_state *istate,
2764 untracked_cache_invalidate_path(istate, path);
2767 /* Update gitfile and core.worktree setting to connect work tree and git dir */
2768 void connect_work_tree_and_git_dir(const char *work_tree_, const char *git_dir_)
2770 struct strbuf gitfile_sb = STRBUF_INIT;
2771 struct strbuf cfg_sb = STRBUF_INIT;
2772 struct strbuf rel_path = STRBUF_INIT;
2773 char *git_dir, *work_tree;
2775 /* Prepare .git file */
2776 strbuf_addf(&gitfile_sb, "%s/.git", work_tree_);
2777 if (safe_create_leading_directories_const(gitfile_sb.buf))
2778 die(_("could not create directories for %s"), gitfile_sb.buf);
2780 /* Prepare config file */
2781 strbuf_addf(&cfg_sb, "%s/config", git_dir_);
2782 if (safe_create_leading_directories_const(cfg_sb.buf))
2783 die(_("could not create directories for %s"), cfg_sb.buf);
2785 git_dir = real_pathdup(git_dir_, 1);
2786 work_tree = real_pathdup(work_tree_, 1);
2788 /* Write .git file */
2789 write_file(gitfile_sb.buf, "gitdir: %s",
2790 relative_path(git_dir, work_tree, &rel_path));
2791 /* Update core.worktree setting */
2792 git_config_set_in_file(cfg_sb.buf, "core.worktree",
2793 relative_path(work_tree, git_dir, &rel_path));
2795 strbuf_release(&gitfile_sb);
2796 strbuf_release(&cfg_sb);
2797 strbuf_release(&rel_path);
2803 * Migrate the git directory of the given path from old_git_dir to new_git_dir.
2805 void relocate_gitdir(const char *path, const char *old_git_dir, const char *new_git_dir)
2807 if (rename(old_git_dir, new_git_dir) < 0)
2808 die_errno(_("could not migrate git directory from '%s' to '%s'"),
2809 old_git_dir, new_git_dir);
2811 connect_work_tree_and_git_dir(path, new_git_dir);