Merge branch 'rb/hpe'
[git.git] / dir.c
blob21284482198147687fb03892265f97ac5ed58d18
1 /*
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
9 */
10 #define NO_THE_INDEX_COMPATIBILITY_MACROS
11 #include "cache.h"
12 #include "config.h"
13 #include "dir.h"
14 #include "object-store.h"
15 #include "attr.h"
16 #include "refs.h"
17 #include "wildmatch.h"
18 #include "pathspec.h"
19 #include "utf8.h"
20 #include "varint.h"
21 #include "ewah/ewok.h"
22 #include "fsmonitor.h"
23 #include "submodule-config.h"
26 * Tells read_directory_recursive how a file or directory should be treated.
27 * Values are ordered by significance, e.g. if a directory contains both
28 * excluded and untracked files, it is listed as untracked because
29 * path_untracked > path_excluded.
31 enum path_treatment {
32 path_none = 0,
33 path_recurse,
34 path_excluded,
35 path_untracked
39 * Support data structure for our opendir/readdir/closedir wrappers
41 struct cached_dir {
42 DIR *fdir;
43 struct untracked_cache_dir *untracked;
44 int nr_files;
45 int nr_dirs;
47 struct dirent *de;
48 const char *file;
49 struct untracked_cache_dir *ucd;
52 static enum path_treatment read_directory_recursive(struct dir_struct *dir,
53 struct index_state *istate, const char *path, int len,
54 struct untracked_cache_dir *untracked,
55 int check_only, int stop_at_first_file, const struct pathspec *pathspec);
56 static int get_dtype(struct dirent *de, struct index_state *istate,
57 const char *path, int len);
59 int count_slashes(const char *s)
61 int cnt = 0;
62 while (*s)
63 if (*s++ == '/')
64 cnt++;
65 return cnt;
68 int fspathcmp(const char *a, const char *b)
70 return ignore_case ? strcasecmp(a, b) : strcmp(a, b);
73 int fspathncmp(const char *a, const char *b, size_t count)
75 return ignore_case ? strncasecmp(a, b, count) : strncmp(a, b, count);
78 int git_fnmatch(const struct pathspec_item *item,
79 const char *pattern, const char *string,
80 int prefix)
82 if (prefix > 0) {
83 if (ps_strncmp(item, pattern, string, prefix))
84 return WM_NOMATCH;
85 pattern += prefix;
86 string += prefix;
88 if (item->flags & PATHSPEC_ONESTAR) {
89 int pattern_len = strlen(++pattern);
90 int string_len = strlen(string);
91 return string_len < pattern_len ||
92 ps_strcmp(item, pattern,
93 string + string_len - pattern_len);
95 if (item->magic & PATHSPEC_GLOB)
96 return wildmatch(pattern, string,
97 WM_PATHNAME |
98 (item->magic & PATHSPEC_ICASE ? WM_CASEFOLD : 0));
99 else
100 /* wildmatch has not learned no FNM_PATHNAME mode yet */
101 return wildmatch(pattern, string,
102 item->magic & PATHSPEC_ICASE ? WM_CASEFOLD : 0);
105 static int fnmatch_icase_mem(const char *pattern, int patternlen,
106 const char *string, int stringlen,
107 int flags)
109 int match_status;
110 struct strbuf pat_buf = STRBUF_INIT;
111 struct strbuf str_buf = STRBUF_INIT;
112 const char *use_pat = pattern;
113 const char *use_str = string;
115 if (pattern[patternlen]) {
116 strbuf_add(&pat_buf, pattern, patternlen);
117 use_pat = pat_buf.buf;
119 if (string[stringlen]) {
120 strbuf_add(&str_buf, string, stringlen);
121 use_str = str_buf.buf;
124 if (ignore_case)
125 flags |= WM_CASEFOLD;
126 match_status = wildmatch(use_pat, use_str, flags);
128 strbuf_release(&pat_buf);
129 strbuf_release(&str_buf);
131 return match_status;
134 static size_t common_prefix_len(const struct pathspec *pathspec)
136 int n;
137 size_t max = 0;
140 * ":(icase)path" is treated as a pathspec full of
141 * wildcard. In other words, only prefix is considered common
142 * prefix. If the pathspec is abc/foo abc/bar, running in
143 * subdir xyz, the common prefix is still xyz, not xuz/abc as
144 * in non-:(icase).
146 GUARD_PATHSPEC(pathspec,
147 PATHSPEC_FROMTOP |
148 PATHSPEC_MAXDEPTH |
149 PATHSPEC_LITERAL |
150 PATHSPEC_GLOB |
151 PATHSPEC_ICASE |
152 PATHSPEC_EXCLUDE |
153 PATHSPEC_ATTR);
155 for (n = 0; n < pathspec->nr; n++) {
156 size_t i = 0, len = 0, item_len;
157 if (pathspec->items[n].magic & PATHSPEC_EXCLUDE)
158 continue;
159 if (pathspec->items[n].magic & PATHSPEC_ICASE)
160 item_len = pathspec->items[n].prefix;
161 else
162 item_len = pathspec->items[n].nowildcard_len;
163 while (i < item_len && (n == 0 || i < max)) {
164 char c = pathspec->items[n].match[i];
165 if (c != pathspec->items[0].match[i])
166 break;
167 if (c == '/')
168 len = i + 1;
169 i++;
171 if (n == 0 || len < max) {
172 max = len;
173 if (!max)
174 break;
177 return max;
181 * Returns a copy of the longest leading path common among all
182 * pathspecs.
184 char *common_prefix(const struct pathspec *pathspec)
186 unsigned long len = common_prefix_len(pathspec);
188 return len ? xmemdupz(pathspec->items[0].match, len) : NULL;
191 int fill_directory(struct dir_struct *dir,
192 struct index_state *istate,
193 const struct pathspec *pathspec)
195 const char *prefix;
196 size_t prefix_len;
199 * Calculate common prefix for the pathspec, and
200 * use that to optimize the directory walk
202 prefix_len = common_prefix_len(pathspec);
203 prefix = prefix_len ? pathspec->items[0].match : "";
205 /* Read the directory and prune it */
206 read_directory(dir, istate, prefix, prefix_len, pathspec);
208 return prefix_len;
211 int within_depth(const char *name, int namelen,
212 int depth, int max_depth)
214 const char *cp = name, *cpe = name + namelen;
216 while (cp < cpe) {
217 if (*cp++ != '/')
218 continue;
219 depth++;
220 if (depth > max_depth)
221 return 0;
223 return 1;
227 * Read the contents of the blob with the given OID into a buffer.
228 * Append a trailing LF to the end if the last line doesn't have one.
230 * Returns:
231 * -1 when the OID is invalid or unknown or does not refer to a blob.
232 * 0 when the blob is empty.
233 * 1 along with { data, size } of the (possibly augmented) buffer
234 * when successful.
236 * Optionally updates the given oid_stat with the given OID (when valid).
238 static int do_read_blob(const struct object_id *oid, struct oid_stat *oid_stat,
239 size_t *size_out, char **data_out)
241 enum object_type type;
242 unsigned long sz;
243 char *data;
245 *size_out = 0;
246 *data_out = NULL;
248 data = read_object_file(oid, &type, &sz);
249 if (!data || type != OBJ_BLOB) {
250 free(data);
251 return -1;
254 if (oid_stat) {
255 memset(&oid_stat->stat, 0, sizeof(oid_stat->stat));
256 oidcpy(&oid_stat->oid, oid);
259 if (sz == 0) {
260 free(data);
261 return 0;
264 if (data[sz - 1] != '\n') {
265 data = xrealloc(data, st_add(sz, 1));
266 data[sz++] = '\n';
269 *size_out = xsize_t(sz);
270 *data_out = data;
272 return 1;
275 #define DO_MATCH_EXCLUDE (1<<0)
276 #define DO_MATCH_DIRECTORY (1<<1)
277 #define DO_MATCH_SUBMODULE (1<<2)
280 * Does 'match' match the given name?
281 * A match is found if
283 * (1) the 'match' string is leading directory of 'name', or
284 * (2) the 'match' string is a wildcard and matches 'name', or
285 * (3) the 'match' string is exactly the same as 'name'.
287 * and the return value tells which case it was.
289 * It returns 0 when there is no match.
291 static int match_pathspec_item(const struct index_state *istate,
292 const struct pathspec_item *item, int prefix,
293 const char *name, int namelen, unsigned flags)
295 /* name/namelen has prefix cut off by caller */
296 const char *match = item->match + prefix;
297 int matchlen = item->len - prefix;
300 * The normal call pattern is:
301 * 1. prefix = common_prefix_len(ps);
302 * 2. prune something, or fill_directory
303 * 3. match_pathspec()
305 * 'prefix' at #1 may be shorter than the command's prefix and
306 * it's ok for #2 to match extra files. Those extras will be
307 * trimmed at #3.
309 * Suppose the pathspec is 'foo' and '../bar' running from
310 * subdir 'xyz'. The common prefix at #1 will be empty, thanks
311 * to "../". We may have xyz/foo _and_ XYZ/foo after #2. The
312 * user does not want XYZ/foo, only the "foo" part should be
313 * case-insensitive. We need to filter out XYZ/foo here. In
314 * other words, we do not trust the caller on comparing the
315 * prefix part when :(icase) is involved. We do exact
316 * comparison ourselves.
318 * Normally the caller (common_prefix_len() in fact) does
319 * _exact_ matching on name[-prefix+1..-1] and we do not need
320 * to check that part. Be defensive and check it anyway, in
321 * case common_prefix_len is changed, or a new caller is
322 * introduced that does not use common_prefix_len.
324 * If the penalty turns out too high when prefix is really
325 * long, maybe change it to
326 * strncmp(match, name, item->prefix - prefix)
328 if (item->prefix && (item->magic & PATHSPEC_ICASE) &&
329 strncmp(item->match, name - prefix, item->prefix))
330 return 0;
332 if (item->attr_match_nr &&
333 !match_pathspec_attrs(istate, name, namelen, item))
334 return 0;
336 /* If the match was just the prefix, we matched */
337 if (!*match)
338 return MATCHED_RECURSIVELY;
340 if (matchlen <= namelen && !ps_strncmp(item, match, name, matchlen)) {
341 if (matchlen == namelen)
342 return MATCHED_EXACTLY;
344 if (match[matchlen-1] == '/' || name[matchlen] == '/')
345 return MATCHED_RECURSIVELY;
346 } else if ((flags & DO_MATCH_DIRECTORY) &&
347 match[matchlen - 1] == '/' &&
348 namelen == matchlen - 1 &&
349 !ps_strncmp(item, match, name, namelen))
350 return MATCHED_EXACTLY;
352 if (item->nowildcard_len < item->len &&
353 !git_fnmatch(item, match, name,
354 item->nowildcard_len - prefix))
355 return MATCHED_FNMATCH;
357 /* Perform checks to see if "name" is a super set of the pathspec */
358 if (flags & DO_MATCH_SUBMODULE) {
359 /* name is a literal prefix of the pathspec */
360 if ((namelen < matchlen) &&
361 (match[namelen] == '/') &&
362 !ps_strncmp(item, match, name, namelen))
363 return MATCHED_RECURSIVELY;
365 /* name" doesn't match up to the first wild character */
366 if (item->nowildcard_len < item->len &&
367 ps_strncmp(item, match, name,
368 item->nowildcard_len - prefix))
369 return 0;
372 * Here is where we would perform a wildmatch to check if
373 * "name" can be matched as a directory (or a prefix) against
374 * the pathspec. Since wildmatch doesn't have this capability
375 * at the present we have to punt and say that it is a match,
376 * potentially returning a false positive
377 * The submodules themselves will be able to perform more
378 * accurate matching to determine if the pathspec matches.
380 return MATCHED_RECURSIVELY;
383 return 0;
387 * Given a name and a list of pathspecs, returns the nature of the
388 * closest (i.e. most specific) match of the name to any of the
389 * pathspecs.
391 * The caller typically calls this multiple times with the same
392 * pathspec and seen[] array but with different name/namelen
393 * (e.g. entries from the index) and is interested in seeing if and
394 * how each pathspec matches all the names it calls this function
395 * with. A mark is left in the seen[] array for each pathspec element
396 * indicating the closest type of match that element achieved, so if
397 * seen[n] remains zero after multiple invocations, that means the nth
398 * pathspec did not match any names, which could indicate that the
399 * user mistyped the nth pathspec.
401 static int do_match_pathspec(const struct index_state *istate,
402 const struct pathspec *ps,
403 const char *name, int namelen,
404 int prefix, char *seen,
405 unsigned flags)
407 int i, retval = 0, exclude = flags & DO_MATCH_EXCLUDE;
409 GUARD_PATHSPEC(ps,
410 PATHSPEC_FROMTOP |
411 PATHSPEC_MAXDEPTH |
412 PATHSPEC_LITERAL |
413 PATHSPEC_GLOB |
414 PATHSPEC_ICASE |
415 PATHSPEC_EXCLUDE |
416 PATHSPEC_ATTR);
418 if (!ps->nr) {
419 if (!ps->recursive ||
420 !(ps->magic & PATHSPEC_MAXDEPTH) ||
421 ps->max_depth == -1)
422 return MATCHED_RECURSIVELY;
424 if (within_depth(name, namelen, 0, ps->max_depth))
425 return MATCHED_EXACTLY;
426 else
427 return 0;
430 name += prefix;
431 namelen -= prefix;
433 for (i = ps->nr - 1; i >= 0; i--) {
434 int how;
436 if ((!exclude && ps->items[i].magic & PATHSPEC_EXCLUDE) ||
437 ( exclude && !(ps->items[i].magic & PATHSPEC_EXCLUDE)))
438 continue;
440 if (seen && seen[i] == MATCHED_EXACTLY)
441 continue;
443 * Make exclude patterns optional and never report
444 * "pathspec ':(exclude)foo' matches no files"
446 if (seen && ps->items[i].magic & PATHSPEC_EXCLUDE)
447 seen[i] = MATCHED_FNMATCH;
448 how = match_pathspec_item(istate, ps->items+i, prefix, name,
449 namelen, flags);
450 if (ps->recursive &&
451 (ps->magic & PATHSPEC_MAXDEPTH) &&
452 ps->max_depth != -1 &&
453 how && how != MATCHED_FNMATCH) {
454 int len = ps->items[i].len;
455 if (name[len] == '/')
456 len++;
457 if (within_depth(name+len, namelen-len, 0, ps->max_depth))
458 how = MATCHED_EXACTLY;
459 else
460 how = 0;
462 if (how) {
463 if (retval < how)
464 retval = how;
465 if (seen && seen[i] < how)
466 seen[i] = how;
469 return retval;
472 int match_pathspec(const struct index_state *istate,
473 const struct pathspec *ps,
474 const char *name, int namelen,
475 int prefix, char *seen, int is_dir)
477 int positive, negative;
478 unsigned flags = is_dir ? DO_MATCH_DIRECTORY : 0;
479 positive = do_match_pathspec(istate, ps, name, namelen,
480 prefix, seen, flags);
481 if (!(ps->magic & PATHSPEC_EXCLUDE) || !positive)
482 return positive;
483 negative = do_match_pathspec(istate, ps, name, namelen,
484 prefix, seen,
485 flags | DO_MATCH_EXCLUDE);
486 return negative ? 0 : positive;
490 * Check if a submodule is a superset of the pathspec
492 int submodule_path_match(const struct index_state *istate,
493 const struct pathspec *ps,
494 const char *submodule_name,
495 char *seen)
497 int matched = do_match_pathspec(istate, ps, submodule_name,
498 strlen(submodule_name),
499 0, seen,
500 DO_MATCH_DIRECTORY |
501 DO_MATCH_SUBMODULE);
502 return matched;
505 int report_path_error(const char *ps_matched,
506 const struct pathspec *pathspec,
507 const char *prefix)
510 * Make sure all pathspec matched; otherwise it is an error.
512 int num, errors = 0;
513 for (num = 0; num < pathspec->nr; num++) {
514 int other, found_dup;
516 if (ps_matched[num])
517 continue;
519 * The caller might have fed identical pathspec
520 * twice. Do not barf on such a mistake.
521 * FIXME: parse_pathspec should have eliminated
522 * duplicate pathspec.
524 for (found_dup = other = 0;
525 !found_dup && other < pathspec->nr;
526 other++) {
527 if (other == num || !ps_matched[other])
528 continue;
529 if (!strcmp(pathspec->items[other].original,
530 pathspec->items[num].original))
532 * Ok, we have a match already.
534 found_dup = 1;
536 if (found_dup)
537 continue;
539 error(_("pathspec '%s' did not match any file(s) known to git"),
540 pathspec->items[num].original);
541 errors++;
543 return errors;
547 * Return the length of the "simple" part of a path match limiter.
549 int simple_length(const char *match)
551 int len = -1;
553 for (;;) {
554 unsigned char c = *match++;
555 len++;
556 if (c == '\0' || is_glob_special(c))
557 return len;
561 int no_wildcard(const char *string)
563 return string[simple_length(string)] == '\0';
566 void parse_exclude_pattern(const char **pattern,
567 int *patternlen,
568 unsigned *flags,
569 int *nowildcardlen)
571 const char *p = *pattern;
572 size_t i, len;
574 *flags = 0;
575 if (*p == '!') {
576 *flags |= EXC_FLAG_NEGATIVE;
577 p++;
579 len = strlen(p);
580 if (len && p[len - 1] == '/') {
581 len--;
582 *flags |= EXC_FLAG_MUSTBEDIR;
584 for (i = 0; i < len; i++) {
585 if (p[i] == '/')
586 break;
588 if (i == len)
589 *flags |= EXC_FLAG_NODIR;
590 *nowildcardlen = simple_length(p);
592 * we should have excluded the trailing slash from 'p' too,
593 * but that's one more allocation. Instead just make sure
594 * nowildcardlen does not exceed real patternlen
596 if (*nowildcardlen > len)
597 *nowildcardlen = len;
598 if (*p == '*' && no_wildcard(p + 1))
599 *flags |= EXC_FLAG_ENDSWITH;
600 *pattern = p;
601 *patternlen = len;
604 void add_exclude(const char *string, const char *base,
605 int baselen, struct exclude_list *el, int srcpos)
607 struct exclude *x;
608 int patternlen;
609 unsigned flags;
610 int nowildcardlen;
612 parse_exclude_pattern(&string, &patternlen, &flags, &nowildcardlen);
613 if (flags & EXC_FLAG_MUSTBEDIR) {
614 FLEXPTR_ALLOC_MEM(x, pattern, string, patternlen);
615 } else {
616 x = xmalloc(sizeof(*x));
617 x->pattern = string;
619 x->patternlen = patternlen;
620 x->nowildcardlen = nowildcardlen;
621 x->base = base;
622 x->baselen = baselen;
623 x->flags = flags;
624 x->srcpos = srcpos;
625 ALLOC_GROW(el->excludes, el->nr + 1, el->alloc);
626 el->excludes[el->nr++] = x;
627 x->el = el;
630 static int read_skip_worktree_file_from_index(const struct index_state *istate,
631 const char *path,
632 size_t *size_out, char **data_out,
633 struct oid_stat *oid_stat)
635 int pos, len;
637 len = strlen(path);
638 pos = index_name_pos(istate, path, len);
639 if (pos < 0)
640 return -1;
641 if (!ce_skip_worktree(istate->cache[pos]))
642 return -1;
644 return do_read_blob(&istate->cache[pos]->oid, oid_stat, size_out, data_out);
648 * Frees memory within el which was allocated for exclude patterns and
649 * the file buffer. Does not free el itself.
651 void clear_exclude_list(struct exclude_list *el)
653 int i;
655 for (i = 0; i < el->nr; i++)
656 free(el->excludes[i]);
657 free(el->excludes);
658 free(el->filebuf);
660 memset(el, 0, sizeof(*el));
663 static void trim_trailing_spaces(char *buf)
665 char *p, *last_space = NULL;
667 for (p = buf; *p; p++)
668 switch (*p) {
669 case ' ':
670 if (!last_space)
671 last_space = p;
672 break;
673 case '\\':
674 p++;
675 if (!*p)
676 return;
677 /* fallthrough */
678 default:
679 last_space = NULL;
682 if (last_space)
683 *last_space = '\0';
687 * Given a subdirectory name and "dir" of the current directory,
688 * search the subdir in "dir" and return it, or create a new one if it
689 * does not exist in "dir".
691 * If "name" has the trailing slash, it'll be excluded in the search.
693 static struct untracked_cache_dir *lookup_untracked(struct untracked_cache *uc,
694 struct untracked_cache_dir *dir,
695 const char *name, int len)
697 int first, last;
698 struct untracked_cache_dir *d;
699 if (!dir)
700 return NULL;
701 if (len && name[len - 1] == '/')
702 len--;
703 first = 0;
704 last = dir->dirs_nr;
705 while (last > first) {
706 int cmp, next = (last + first) >> 1;
707 d = dir->dirs[next];
708 cmp = strncmp(name, d->name, len);
709 if (!cmp && strlen(d->name) > len)
710 cmp = -1;
711 if (!cmp)
712 return d;
713 if (cmp < 0) {
714 last = next;
715 continue;
717 first = next+1;
720 uc->dir_created++;
721 FLEX_ALLOC_MEM(d, name, name, len);
723 ALLOC_GROW(dir->dirs, dir->dirs_nr + 1, dir->dirs_alloc);
724 MOVE_ARRAY(dir->dirs + first + 1, dir->dirs + first,
725 dir->dirs_nr - first);
726 dir->dirs_nr++;
727 dir->dirs[first] = d;
728 return d;
731 static void do_invalidate_gitignore(struct untracked_cache_dir *dir)
733 int i;
734 dir->valid = 0;
735 dir->untracked_nr = 0;
736 for (i = 0; i < dir->dirs_nr; i++)
737 do_invalidate_gitignore(dir->dirs[i]);
740 static void invalidate_gitignore(struct untracked_cache *uc,
741 struct untracked_cache_dir *dir)
743 uc->gitignore_invalidated++;
744 do_invalidate_gitignore(dir);
747 static void invalidate_directory(struct untracked_cache *uc,
748 struct untracked_cache_dir *dir)
750 int i;
753 * Invalidation increment here is just roughly correct. If
754 * untracked_nr or any of dirs[].recurse is non-zero, we
755 * should increment dir_invalidated too. But that's more
756 * expensive to do.
758 if (dir->valid)
759 uc->dir_invalidated++;
761 dir->valid = 0;
762 dir->untracked_nr = 0;
763 for (i = 0; i < dir->dirs_nr; i++)
764 dir->dirs[i]->recurse = 0;
767 static int add_excludes_from_buffer(char *buf, size_t size,
768 const char *base, int baselen,
769 struct exclude_list *el);
772 * Given a file with name "fname", read it (either from disk, or from
773 * an index if 'istate' is non-null), parse it and store the
774 * exclude rules in "el".
776 * If "ss" is not NULL, compute SHA-1 of the exclude file and fill
777 * stat data from disk (only valid if add_excludes returns zero). If
778 * ss_valid is non-zero, "ss" must contain good value as input.
780 static int add_excludes(const char *fname, const char *base, int baselen,
781 struct exclude_list *el, struct index_state *istate,
782 struct oid_stat *oid_stat)
784 struct stat st;
785 int r;
786 int fd;
787 size_t size = 0;
788 char *buf;
790 fd = open(fname, O_RDONLY);
791 if (fd < 0 || fstat(fd, &st) < 0) {
792 if (fd < 0)
793 warn_on_fopen_errors(fname);
794 else
795 close(fd);
796 if (!istate)
797 return -1;
798 r = read_skip_worktree_file_from_index(istate, fname,
799 &size, &buf,
800 oid_stat);
801 if (r != 1)
802 return r;
803 } else {
804 size = xsize_t(st.st_size);
805 if (size == 0) {
806 if (oid_stat) {
807 fill_stat_data(&oid_stat->stat, &st);
808 oidcpy(&oid_stat->oid, the_hash_algo->empty_blob);
809 oid_stat->valid = 1;
811 close(fd);
812 return 0;
814 buf = xmallocz(size);
815 if (read_in_full(fd, buf, size) != size) {
816 free(buf);
817 close(fd);
818 return -1;
820 buf[size++] = '\n';
821 close(fd);
822 if (oid_stat) {
823 int pos;
824 if (oid_stat->valid &&
825 !match_stat_data_racy(istate, &oid_stat->stat, &st))
826 ; /* no content change, ss->sha1 still good */
827 else if (istate &&
828 (pos = index_name_pos(istate, fname, strlen(fname))) >= 0 &&
829 !ce_stage(istate->cache[pos]) &&
830 ce_uptodate(istate->cache[pos]) &&
831 !would_convert_to_git(istate, fname))
832 oidcpy(&oid_stat->oid,
833 &istate->cache[pos]->oid);
834 else
835 hash_object_file(buf, size, "blob",
836 &oid_stat->oid);
837 fill_stat_data(&oid_stat->stat, &st);
838 oid_stat->valid = 1;
842 add_excludes_from_buffer(buf, size, base, baselen, el);
843 return 0;
846 static int add_excludes_from_buffer(char *buf, size_t size,
847 const char *base, int baselen,
848 struct exclude_list *el)
850 int i, lineno = 1;
851 char *entry;
853 el->filebuf = buf;
855 if (skip_utf8_bom(&buf, size))
856 size -= buf - el->filebuf;
858 entry = buf;
860 for (i = 0; i < size; i++) {
861 if (buf[i] == '\n') {
862 if (entry != buf + i && entry[0] != '#') {
863 buf[i - (i && buf[i-1] == '\r')] = 0;
864 trim_trailing_spaces(entry);
865 add_exclude(entry, base, baselen, el, lineno);
867 lineno++;
868 entry = buf + i + 1;
871 return 0;
874 int add_excludes_from_file_to_list(const char *fname, const char *base,
875 int baselen, struct exclude_list *el,
876 struct index_state *istate)
878 return add_excludes(fname, base, baselen, el, istate, NULL);
881 int add_excludes_from_blob_to_list(
882 struct object_id *oid,
883 const char *base, int baselen,
884 struct exclude_list *el)
886 char *buf;
887 size_t size;
888 int r;
890 r = do_read_blob(oid, NULL, &size, &buf);
891 if (r != 1)
892 return r;
894 add_excludes_from_buffer(buf, size, base, baselen, el);
895 return 0;
898 struct exclude_list *add_exclude_list(struct dir_struct *dir,
899 int group_type, const char *src)
901 struct exclude_list *el;
902 struct exclude_list_group *group;
904 group = &dir->exclude_list_group[group_type];
905 ALLOC_GROW(group->el, group->nr + 1, group->alloc);
906 el = &group->el[group->nr++];
907 memset(el, 0, sizeof(*el));
908 el->src = src;
909 return el;
913 * Used to set up core.excludesfile and .git/info/exclude lists.
915 static void add_excludes_from_file_1(struct dir_struct *dir, const char *fname,
916 struct oid_stat *oid_stat)
918 struct exclude_list *el;
920 * catch setup_standard_excludes() that's called before
921 * dir->untracked is assigned. That function behaves
922 * differently when dir->untracked is non-NULL.
924 if (!dir->untracked)
925 dir->unmanaged_exclude_files++;
926 el = add_exclude_list(dir, EXC_FILE, fname);
927 if (add_excludes(fname, "", 0, el, NULL, oid_stat) < 0)
928 die(_("cannot use %s as an exclude file"), fname);
931 void add_excludes_from_file(struct dir_struct *dir, const char *fname)
933 dir->unmanaged_exclude_files++; /* see validate_untracked_cache() */
934 add_excludes_from_file_1(dir, fname, NULL);
937 int match_basename(const char *basename, int basenamelen,
938 const char *pattern, int prefix, int patternlen,
939 unsigned flags)
941 if (prefix == patternlen) {
942 if (patternlen == basenamelen &&
943 !fspathncmp(pattern, basename, basenamelen))
944 return 1;
945 } else if (flags & EXC_FLAG_ENDSWITH) {
946 /* "*literal" matching against "fooliteral" */
947 if (patternlen - 1 <= basenamelen &&
948 !fspathncmp(pattern + 1,
949 basename + basenamelen - (patternlen - 1),
950 patternlen - 1))
951 return 1;
952 } else {
953 if (fnmatch_icase_mem(pattern, patternlen,
954 basename, basenamelen,
955 0) == 0)
956 return 1;
958 return 0;
961 int match_pathname(const char *pathname, int pathlen,
962 const char *base, int baselen,
963 const char *pattern, int prefix, int patternlen,
964 unsigned flags)
966 const char *name;
967 int namelen;
970 * match with FNM_PATHNAME; the pattern has base implicitly
971 * in front of it.
973 if (*pattern == '/') {
974 pattern++;
975 patternlen--;
976 prefix--;
980 * baselen does not count the trailing slash. base[] may or
981 * may not end with a trailing slash though.
983 if (pathlen < baselen + 1 ||
984 (baselen && pathname[baselen] != '/') ||
985 fspathncmp(pathname, base, baselen))
986 return 0;
988 namelen = baselen ? pathlen - baselen - 1 : pathlen;
989 name = pathname + pathlen - namelen;
991 if (prefix) {
993 * if the non-wildcard part is longer than the
994 * remaining pathname, surely it cannot match.
996 if (prefix > namelen)
997 return 0;
999 if (fspathncmp(pattern, name, prefix))
1000 return 0;
1001 pattern += prefix;
1002 patternlen -= prefix;
1003 name += prefix;
1004 namelen -= prefix;
1007 * If the whole pattern did not have a wildcard,
1008 * then our prefix match is all we need; we
1009 * do not need to call fnmatch at all.
1011 if (!patternlen && !namelen)
1012 return 1;
1015 return fnmatch_icase_mem(pattern, patternlen,
1016 name, namelen,
1017 WM_PATHNAME) == 0;
1021 * Scan the given exclude list in reverse to see whether pathname
1022 * should be ignored. The first match (i.e. the last on the list), if
1023 * any, determines the fate. Returns the exclude_list element which
1024 * matched, or NULL for undecided.
1026 static struct exclude *last_exclude_matching_from_list(const char *pathname,
1027 int pathlen,
1028 const char *basename,
1029 int *dtype,
1030 struct exclude_list *el,
1031 struct index_state *istate)
1033 struct exclude *exc = NULL; /* undecided */
1034 int i;
1036 if (!el->nr)
1037 return NULL; /* undefined */
1039 for (i = el->nr - 1; 0 <= i; i--) {
1040 struct exclude *x = el->excludes[i];
1041 const char *exclude = x->pattern;
1042 int prefix = x->nowildcardlen;
1044 if (x->flags & EXC_FLAG_MUSTBEDIR) {
1045 if (*dtype == DT_UNKNOWN)
1046 *dtype = get_dtype(NULL, istate, pathname, pathlen);
1047 if (*dtype != DT_DIR)
1048 continue;
1051 if (x->flags & EXC_FLAG_NODIR) {
1052 if (match_basename(basename,
1053 pathlen - (basename - pathname),
1054 exclude, prefix, x->patternlen,
1055 x->flags)) {
1056 exc = x;
1057 break;
1059 continue;
1062 assert(x->baselen == 0 || x->base[x->baselen - 1] == '/');
1063 if (match_pathname(pathname, pathlen,
1064 x->base, x->baselen ? x->baselen - 1 : 0,
1065 exclude, prefix, x->patternlen, x->flags)) {
1066 exc = x;
1067 break;
1070 return exc;
1074 * Scan the list and let the last match determine the fate.
1075 * Return 1 for exclude, 0 for include and -1 for undecided.
1077 int is_excluded_from_list(const char *pathname,
1078 int pathlen, const char *basename, int *dtype,
1079 struct exclude_list *el, struct index_state *istate)
1081 struct exclude *exclude;
1082 exclude = last_exclude_matching_from_list(pathname, pathlen, basename,
1083 dtype, el, istate);
1084 if (exclude)
1085 return exclude->flags & EXC_FLAG_NEGATIVE ? 0 : 1;
1086 return -1; /* undecided */
1089 static struct exclude *last_exclude_matching_from_lists(struct dir_struct *dir,
1090 struct index_state *istate,
1091 const char *pathname, int pathlen, const char *basename,
1092 int *dtype_p)
1094 int i, j;
1095 struct exclude_list_group *group;
1096 struct exclude *exclude;
1097 for (i = EXC_CMDL; i <= EXC_FILE; i++) {
1098 group = &dir->exclude_list_group[i];
1099 for (j = group->nr - 1; j >= 0; j--) {
1100 exclude = last_exclude_matching_from_list(
1101 pathname, pathlen, basename, dtype_p,
1102 &group->el[j], istate);
1103 if (exclude)
1104 return exclude;
1107 return NULL;
1111 * Loads the per-directory exclude list for the substring of base
1112 * which has a char length of baselen.
1114 static void prep_exclude(struct dir_struct *dir,
1115 struct index_state *istate,
1116 const char *base, int baselen)
1118 struct exclude_list_group *group;
1119 struct exclude_list *el;
1120 struct exclude_stack *stk = NULL;
1121 struct untracked_cache_dir *untracked;
1122 int current;
1124 group = &dir->exclude_list_group[EXC_DIRS];
1127 * Pop the exclude lists from the EXCL_DIRS exclude_list_group
1128 * which originate from directories not in the prefix of the
1129 * path being checked.
1131 while ((stk = dir->exclude_stack) != NULL) {
1132 if (stk->baselen <= baselen &&
1133 !strncmp(dir->basebuf.buf, base, stk->baselen))
1134 break;
1135 el = &group->el[dir->exclude_stack->exclude_ix];
1136 dir->exclude_stack = stk->prev;
1137 dir->exclude = NULL;
1138 free((char *)el->src); /* see strbuf_detach() below */
1139 clear_exclude_list(el);
1140 free(stk);
1141 group->nr--;
1144 /* Skip traversing into sub directories if the parent is excluded */
1145 if (dir->exclude)
1146 return;
1149 * Lazy initialization. All call sites currently just
1150 * memset(dir, 0, sizeof(*dir)) before use. Changing all of
1151 * them seems lots of work for little benefit.
1153 if (!dir->basebuf.buf)
1154 strbuf_init(&dir->basebuf, PATH_MAX);
1156 /* Read from the parent directories and push them down. */
1157 current = stk ? stk->baselen : -1;
1158 strbuf_setlen(&dir->basebuf, current < 0 ? 0 : current);
1159 if (dir->untracked)
1160 untracked = stk ? stk->ucd : dir->untracked->root;
1161 else
1162 untracked = NULL;
1164 while (current < baselen) {
1165 const char *cp;
1166 struct oid_stat oid_stat;
1168 stk = xcalloc(1, sizeof(*stk));
1169 if (current < 0) {
1170 cp = base;
1171 current = 0;
1172 } else {
1173 cp = strchr(base + current + 1, '/');
1174 if (!cp)
1175 die("oops in prep_exclude");
1176 cp++;
1177 untracked =
1178 lookup_untracked(dir->untracked, untracked,
1179 base + current,
1180 cp - base - current);
1182 stk->prev = dir->exclude_stack;
1183 stk->baselen = cp - base;
1184 stk->exclude_ix = group->nr;
1185 stk->ucd = untracked;
1186 el = add_exclude_list(dir, EXC_DIRS, NULL);
1187 strbuf_add(&dir->basebuf, base + current, stk->baselen - current);
1188 assert(stk->baselen == dir->basebuf.len);
1190 /* Abort if the directory is excluded */
1191 if (stk->baselen) {
1192 int dt = DT_DIR;
1193 dir->basebuf.buf[stk->baselen - 1] = 0;
1194 dir->exclude = last_exclude_matching_from_lists(dir,
1195 istate,
1196 dir->basebuf.buf, stk->baselen - 1,
1197 dir->basebuf.buf + current, &dt);
1198 dir->basebuf.buf[stk->baselen - 1] = '/';
1199 if (dir->exclude &&
1200 dir->exclude->flags & EXC_FLAG_NEGATIVE)
1201 dir->exclude = NULL;
1202 if (dir->exclude) {
1203 dir->exclude_stack = stk;
1204 return;
1208 /* Try to read per-directory file */
1209 oidclr(&oid_stat.oid);
1210 oid_stat.valid = 0;
1211 if (dir->exclude_per_dir &&
1213 * If we know that no files have been added in
1214 * this directory (i.e. valid_cached_dir() has
1215 * been executed and set untracked->valid) ..
1217 (!untracked || !untracked->valid ||
1219 * .. and .gitignore does not exist before
1220 * (i.e. null exclude_oid). Then we can skip
1221 * loading .gitignore, which would result in
1222 * ENOENT anyway.
1224 !is_null_oid(&untracked->exclude_oid))) {
1226 * dir->basebuf gets reused by the traversal, but we
1227 * need fname to remain unchanged to ensure the src
1228 * member of each struct exclude correctly
1229 * back-references its source file. Other invocations
1230 * of add_exclude_list provide stable strings, so we
1231 * strbuf_detach() and free() here in the caller.
1233 struct strbuf sb = STRBUF_INIT;
1234 strbuf_addbuf(&sb, &dir->basebuf);
1235 strbuf_addstr(&sb, dir->exclude_per_dir);
1236 el->src = strbuf_detach(&sb, NULL);
1237 add_excludes(el->src, el->src, stk->baselen, el, istate,
1238 untracked ? &oid_stat : NULL);
1241 * NEEDSWORK: when untracked cache is enabled, prep_exclude()
1242 * will first be called in valid_cached_dir() then maybe many
1243 * times more in last_exclude_matching(). When the cache is
1244 * used, last_exclude_matching() will not be called and
1245 * reading .gitignore content will be a waste.
1247 * So when it's called by valid_cached_dir() and we can get
1248 * .gitignore SHA-1 from the index (i.e. .gitignore is not
1249 * modified on work tree), we could delay reading the
1250 * .gitignore content until we absolutely need it in
1251 * last_exclude_matching(). Be careful about ignore rule
1252 * order, though, if you do that.
1254 if (untracked &&
1255 !oideq(&oid_stat.oid, &untracked->exclude_oid)) {
1256 invalidate_gitignore(dir->untracked, untracked);
1257 oidcpy(&untracked->exclude_oid, &oid_stat.oid);
1259 dir->exclude_stack = stk;
1260 current = stk->baselen;
1262 strbuf_setlen(&dir->basebuf, baselen);
1266 * Loads the exclude lists for the directory containing pathname, then
1267 * scans all exclude lists to determine whether pathname is excluded.
1268 * Returns the exclude_list element which matched, or NULL for
1269 * undecided.
1271 struct exclude *last_exclude_matching(struct dir_struct *dir,
1272 struct index_state *istate,
1273 const char *pathname,
1274 int *dtype_p)
1276 int pathlen = strlen(pathname);
1277 const char *basename = strrchr(pathname, '/');
1278 basename = (basename) ? basename+1 : pathname;
1280 prep_exclude(dir, istate, pathname, basename-pathname);
1282 if (dir->exclude)
1283 return dir->exclude;
1285 return last_exclude_matching_from_lists(dir, istate, pathname, pathlen,
1286 basename, dtype_p);
1290 * Loads the exclude lists for the directory containing pathname, then
1291 * scans all exclude lists to determine whether pathname is excluded.
1292 * Returns 1 if true, otherwise 0.
1294 int is_excluded(struct dir_struct *dir, struct index_state *istate,
1295 const char *pathname, int *dtype_p)
1297 struct exclude *exclude =
1298 last_exclude_matching(dir, istate, pathname, dtype_p);
1299 if (exclude)
1300 return exclude->flags & EXC_FLAG_NEGATIVE ? 0 : 1;
1301 return 0;
1304 static struct dir_entry *dir_entry_new(const char *pathname, int len)
1306 struct dir_entry *ent;
1308 FLEX_ALLOC_MEM(ent, name, pathname, len);
1309 ent->len = len;
1310 return ent;
1313 static struct dir_entry *dir_add_name(struct dir_struct *dir,
1314 struct index_state *istate,
1315 const char *pathname, int len)
1317 if (index_file_exists(istate, pathname, len, ignore_case))
1318 return NULL;
1320 ALLOC_GROW(dir->entries, dir->nr+1, dir->alloc);
1321 return dir->entries[dir->nr++] = dir_entry_new(pathname, len);
1324 struct dir_entry *dir_add_ignored(struct dir_struct *dir,
1325 struct index_state *istate,
1326 const char *pathname, int len)
1328 if (!index_name_is_other(istate, pathname, len))
1329 return NULL;
1331 ALLOC_GROW(dir->ignored, dir->ignored_nr+1, dir->ignored_alloc);
1332 return dir->ignored[dir->ignored_nr++] = dir_entry_new(pathname, len);
1335 enum exist_status {
1336 index_nonexistent = 0,
1337 index_directory,
1338 index_gitdir
1342 * Do not use the alphabetically sorted index to look up
1343 * the directory name; instead, use the case insensitive
1344 * directory hash.
1346 static enum exist_status directory_exists_in_index_icase(struct index_state *istate,
1347 const char *dirname, int len)
1349 struct cache_entry *ce;
1351 if (index_dir_exists(istate, dirname, len))
1352 return index_directory;
1354 ce = index_file_exists(istate, dirname, len, ignore_case);
1355 if (ce && S_ISGITLINK(ce->ce_mode))
1356 return index_gitdir;
1358 return index_nonexistent;
1362 * The index sorts alphabetically by entry name, which
1363 * means that a gitlink sorts as '\0' at the end, while
1364 * a directory (which is defined not as an entry, but as
1365 * the files it contains) will sort with the '/' at the
1366 * end.
1368 static enum exist_status directory_exists_in_index(struct index_state *istate,
1369 const char *dirname, int len)
1371 int pos;
1373 if (ignore_case)
1374 return directory_exists_in_index_icase(istate, dirname, len);
1376 pos = index_name_pos(istate, dirname, len);
1377 if (pos < 0)
1378 pos = -pos-1;
1379 while (pos < istate->cache_nr) {
1380 const struct cache_entry *ce = istate->cache[pos++];
1381 unsigned char endchar;
1383 if (strncmp(ce->name, dirname, len))
1384 break;
1385 endchar = ce->name[len];
1386 if (endchar > '/')
1387 break;
1388 if (endchar == '/')
1389 return index_directory;
1390 if (!endchar && S_ISGITLINK(ce->ce_mode))
1391 return index_gitdir;
1393 return index_nonexistent;
1397 * When we find a directory when traversing the filesystem, we
1398 * have three distinct cases:
1400 * - ignore it
1401 * - see it as a directory
1402 * - recurse into it
1404 * and which one we choose depends on a combination of existing
1405 * git index contents and the flags passed into the directory
1406 * traversal routine.
1408 * Case 1: If we *already* have entries in the index under that
1409 * directory name, we always recurse into the directory to see
1410 * all the files.
1412 * Case 2: If we *already* have that directory name as a gitlink,
1413 * we always continue to see it as a gitlink, regardless of whether
1414 * there is an actual git directory there or not (it might not
1415 * be checked out as a subproject!)
1417 * Case 3: if we didn't have it in the index previously, we
1418 * have a few sub-cases:
1420 * (a) if "show_other_directories" is true, we show it as
1421 * just a directory, unless "hide_empty_directories" is
1422 * also true, in which case we need to check if it contains any
1423 * untracked and / or ignored files.
1424 * (b) if it looks like a git directory, and we don't have
1425 * 'no_gitlinks' set we treat it as a gitlink, and show it
1426 * as a directory.
1427 * (c) otherwise, we recurse into it.
1429 static enum path_treatment treat_directory(struct dir_struct *dir,
1430 struct index_state *istate,
1431 struct untracked_cache_dir *untracked,
1432 const char *dirname, int len, int baselen, int exclude,
1433 const struct pathspec *pathspec)
1435 /* The "len-1" is to strip the final '/' */
1436 switch (directory_exists_in_index(istate, dirname, len-1)) {
1437 case index_directory:
1438 return path_recurse;
1440 case index_gitdir:
1441 return path_none;
1443 case index_nonexistent:
1444 if (dir->flags & DIR_SHOW_OTHER_DIRECTORIES)
1445 break;
1446 if (exclude &&
1447 (dir->flags & DIR_SHOW_IGNORED_TOO) &&
1448 (dir->flags & DIR_SHOW_IGNORED_TOO_MODE_MATCHING)) {
1451 * This is an excluded directory and we are
1452 * showing ignored paths that match an exclude
1453 * pattern. (e.g. show directory as ignored
1454 * only if it matches an exclude pattern).
1455 * This path will either be 'path_excluded`
1456 * (if we are showing empty directories or if
1457 * the directory is not empty), or will be
1458 * 'path_none' (empty directory, and we are
1459 * not showing empty directories).
1461 if (!(dir->flags & DIR_HIDE_EMPTY_DIRECTORIES))
1462 return path_excluded;
1464 if (read_directory_recursive(dir, istate, dirname, len,
1465 untracked, 1, 1, pathspec) == path_excluded)
1466 return path_excluded;
1468 return path_none;
1470 if (!(dir->flags & DIR_NO_GITLINKS)) {
1471 struct object_id oid;
1472 if (resolve_gitlink_ref(dirname, "HEAD", &oid) == 0)
1473 return exclude ? path_excluded : path_untracked;
1475 return path_recurse;
1478 /* This is the "show_other_directories" case */
1480 if (!(dir->flags & DIR_HIDE_EMPTY_DIRECTORIES))
1481 return exclude ? path_excluded : path_untracked;
1483 untracked = lookup_untracked(dir->untracked, untracked,
1484 dirname + baselen, len - baselen);
1487 * If this is an excluded directory, then we only need to check if
1488 * the directory contains any files.
1490 return read_directory_recursive(dir, istate, dirname, len,
1491 untracked, 1, exclude, pathspec);
1495 * This is an inexact early pruning of any recursive directory
1496 * reading - if the path cannot possibly be in the pathspec,
1497 * return true, and we'll skip it early.
1499 static int simplify_away(const char *path, int pathlen,
1500 const struct pathspec *pathspec)
1502 int i;
1504 if (!pathspec || !pathspec->nr)
1505 return 0;
1507 GUARD_PATHSPEC(pathspec,
1508 PATHSPEC_FROMTOP |
1509 PATHSPEC_MAXDEPTH |
1510 PATHSPEC_LITERAL |
1511 PATHSPEC_GLOB |
1512 PATHSPEC_ICASE |
1513 PATHSPEC_EXCLUDE |
1514 PATHSPEC_ATTR);
1516 for (i = 0; i < pathspec->nr; i++) {
1517 const struct pathspec_item *item = &pathspec->items[i];
1518 int len = item->nowildcard_len;
1520 if (len > pathlen)
1521 len = pathlen;
1522 if (!ps_strncmp(item, item->match, path, len))
1523 return 0;
1526 return 1;
1530 * This function tells us whether an excluded path matches a
1531 * list of "interesting" pathspecs. That is, whether a path matched
1532 * by any of the pathspecs could possibly be ignored by excluding
1533 * the specified path. This can happen if:
1535 * 1. the path is mentioned explicitly in the pathspec
1537 * 2. the path is a directory prefix of some element in the
1538 * pathspec
1540 static int exclude_matches_pathspec(const char *path, int pathlen,
1541 const struct pathspec *pathspec)
1543 int i;
1545 if (!pathspec || !pathspec->nr)
1546 return 0;
1548 GUARD_PATHSPEC(pathspec,
1549 PATHSPEC_FROMTOP |
1550 PATHSPEC_MAXDEPTH |
1551 PATHSPEC_LITERAL |
1552 PATHSPEC_GLOB |
1553 PATHSPEC_ICASE |
1554 PATHSPEC_EXCLUDE);
1556 for (i = 0; i < pathspec->nr; i++) {
1557 const struct pathspec_item *item = &pathspec->items[i];
1558 int len = item->nowildcard_len;
1560 if (len == pathlen &&
1561 !ps_strncmp(item, item->match, path, pathlen))
1562 return 1;
1563 if (len > pathlen &&
1564 item->match[pathlen] == '/' &&
1565 !ps_strncmp(item, item->match, path, pathlen))
1566 return 1;
1568 return 0;
1571 static int get_index_dtype(struct index_state *istate,
1572 const char *path, int len)
1574 int pos;
1575 const struct cache_entry *ce;
1577 ce = index_file_exists(istate, path, len, 0);
1578 if (ce) {
1579 if (!ce_uptodate(ce))
1580 return DT_UNKNOWN;
1581 if (S_ISGITLINK(ce->ce_mode))
1582 return DT_DIR;
1584 * Nobody actually cares about the
1585 * difference between DT_LNK and DT_REG
1587 return DT_REG;
1590 /* Try to look it up as a directory */
1591 pos = index_name_pos(istate, path, len);
1592 if (pos >= 0)
1593 return DT_UNKNOWN;
1594 pos = -pos-1;
1595 while (pos < istate->cache_nr) {
1596 ce = istate->cache[pos++];
1597 if (strncmp(ce->name, path, len))
1598 break;
1599 if (ce->name[len] > '/')
1600 break;
1601 if (ce->name[len] < '/')
1602 continue;
1603 if (!ce_uptodate(ce))
1604 break; /* continue? */
1605 return DT_DIR;
1607 return DT_UNKNOWN;
1610 static int get_dtype(struct dirent *de, struct index_state *istate,
1611 const char *path, int len)
1613 int dtype = de ? DTYPE(de) : DT_UNKNOWN;
1614 struct stat st;
1616 if (dtype != DT_UNKNOWN)
1617 return dtype;
1618 dtype = get_index_dtype(istate, path, len);
1619 if (dtype != DT_UNKNOWN)
1620 return dtype;
1621 if (lstat(path, &st))
1622 return dtype;
1623 if (S_ISREG(st.st_mode))
1624 return DT_REG;
1625 if (S_ISDIR(st.st_mode))
1626 return DT_DIR;
1627 if (S_ISLNK(st.st_mode))
1628 return DT_LNK;
1629 return dtype;
1632 static enum path_treatment treat_one_path(struct dir_struct *dir,
1633 struct untracked_cache_dir *untracked,
1634 struct index_state *istate,
1635 struct strbuf *path,
1636 int baselen,
1637 const struct pathspec *pathspec,
1638 int dtype, struct dirent *de)
1640 int exclude;
1641 int has_path_in_index = !!index_file_exists(istate, path->buf, path->len, ignore_case);
1642 enum path_treatment path_treatment;
1644 if (dtype == DT_UNKNOWN)
1645 dtype = get_dtype(de, istate, path->buf, path->len);
1647 /* Always exclude indexed files */
1648 if (dtype != DT_DIR && has_path_in_index)
1649 return path_none;
1652 * When we are looking at a directory P in the working tree,
1653 * there are three cases:
1655 * (1) P exists in the index. Everything inside the directory P in
1656 * the working tree needs to go when P is checked out from the
1657 * index.
1659 * (2) P does not exist in the index, but there is P/Q in the index.
1660 * We know P will stay a directory when we check out the contents
1661 * of the index, but we do not know yet if there is a directory
1662 * P/Q in the working tree to be killed, so we need to recurse.
1664 * (3) P does not exist in the index, and there is no P/Q in the index
1665 * to require P to be a directory, either. Only in this case, we
1666 * know that everything inside P will not be killed without
1667 * recursing.
1669 if ((dir->flags & DIR_COLLECT_KILLED_ONLY) &&
1670 (dtype == DT_DIR) &&
1671 !has_path_in_index &&
1672 (directory_exists_in_index(istate, path->buf, path->len) == index_nonexistent))
1673 return path_none;
1675 exclude = is_excluded(dir, istate, path->buf, &dtype);
1678 * Excluded? If we don't explicitly want to show
1679 * ignored files, ignore it
1681 if (exclude && !(dir->flags & (DIR_SHOW_IGNORED|DIR_SHOW_IGNORED_TOO)))
1682 return path_excluded;
1684 switch (dtype) {
1685 default:
1686 return path_none;
1687 case DT_DIR:
1688 strbuf_addch(path, '/');
1689 path_treatment = treat_directory(dir, istate, untracked,
1690 path->buf, path->len,
1691 baselen, exclude, pathspec);
1693 * If 1) we only want to return directories that
1694 * match an exclude pattern and 2) this directory does
1695 * not match an exclude pattern but all of its
1696 * contents are excluded, then indicate that we should
1697 * recurse into this directory (instead of marking the
1698 * directory itself as an ignored path).
1700 if (!exclude &&
1701 path_treatment == path_excluded &&
1702 (dir->flags & DIR_SHOW_IGNORED_TOO) &&
1703 (dir->flags & DIR_SHOW_IGNORED_TOO_MODE_MATCHING))
1704 return path_recurse;
1705 return path_treatment;
1706 case DT_REG:
1707 case DT_LNK:
1708 return exclude ? path_excluded : path_untracked;
1712 static enum path_treatment treat_path_fast(struct dir_struct *dir,
1713 struct untracked_cache_dir *untracked,
1714 struct cached_dir *cdir,
1715 struct index_state *istate,
1716 struct strbuf *path,
1717 int baselen,
1718 const struct pathspec *pathspec)
1720 strbuf_setlen(path, baselen);
1721 if (!cdir->ucd) {
1722 strbuf_addstr(path, cdir->file);
1723 return path_untracked;
1725 strbuf_addstr(path, cdir->ucd->name);
1726 /* treat_one_path() does this before it calls treat_directory() */
1727 strbuf_complete(path, '/');
1728 if (cdir->ucd->check_only)
1730 * check_only is set as a result of treat_directory() getting
1731 * to its bottom. Verify again the same set of directories
1732 * with check_only set.
1734 return read_directory_recursive(dir, istate, path->buf, path->len,
1735 cdir->ucd, 1, 0, pathspec);
1737 * We get path_recurse in the first run when
1738 * directory_exists_in_index() returns index_nonexistent. We
1739 * are sure that new changes in the index does not impact the
1740 * outcome. Return now.
1742 return path_recurse;
1745 static enum path_treatment treat_path(struct dir_struct *dir,
1746 struct untracked_cache_dir *untracked,
1747 struct cached_dir *cdir,
1748 struct index_state *istate,
1749 struct strbuf *path,
1750 int baselen,
1751 const struct pathspec *pathspec)
1753 int dtype;
1754 struct dirent *de = cdir->de;
1756 if (!de)
1757 return treat_path_fast(dir, untracked, cdir, istate, path,
1758 baselen, pathspec);
1759 if (is_dot_or_dotdot(de->d_name) || !fspathcmp(de->d_name, ".git"))
1760 return path_none;
1761 strbuf_setlen(path, baselen);
1762 strbuf_addstr(path, de->d_name);
1763 if (simplify_away(path->buf, path->len, pathspec))
1764 return path_none;
1766 dtype = DTYPE(de);
1767 return treat_one_path(dir, untracked, istate, path, baselen, pathspec, dtype, de);
1770 static void add_untracked(struct untracked_cache_dir *dir, const char *name)
1772 if (!dir)
1773 return;
1774 ALLOC_GROW(dir->untracked, dir->untracked_nr + 1,
1775 dir->untracked_alloc);
1776 dir->untracked[dir->untracked_nr++] = xstrdup(name);
1779 static int valid_cached_dir(struct dir_struct *dir,
1780 struct untracked_cache_dir *untracked,
1781 struct index_state *istate,
1782 struct strbuf *path,
1783 int check_only)
1785 struct stat st;
1787 if (!untracked)
1788 return 0;
1791 * With fsmonitor, we can trust the untracked cache's valid field.
1793 refresh_fsmonitor(istate);
1794 if (!(dir->untracked->use_fsmonitor && untracked->valid)) {
1795 if (lstat(path->len ? path->buf : ".", &st)) {
1796 memset(&untracked->stat_data, 0, sizeof(untracked->stat_data));
1797 return 0;
1799 if (!untracked->valid ||
1800 match_stat_data_racy(istate, &untracked->stat_data, &st)) {
1801 fill_stat_data(&untracked->stat_data, &st);
1802 return 0;
1806 if (untracked->check_only != !!check_only)
1807 return 0;
1810 * prep_exclude will be called eventually on this directory,
1811 * but it's called much later in last_exclude_matching(). We
1812 * need it now to determine the validity of the cache for this
1813 * path. The next calls will be nearly no-op, the way
1814 * prep_exclude() is designed.
1816 if (path->len && path->buf[path->len - 1] != '/') {
1817 strbuf_addch(path, '/');
1818 prep_exclude(dir, istate, path->buf, path->len);
1819 strbuf_setlen(path, path->len - 1);
1820 } else
1821 prep_exclude(dir, istate, path->buf, path->len);
1823 /* hopefully prep_exclude() haven't invalidated this entry... */
1824 return untracked->valid;
1827 static int open_cached_dir(struct cached_dir *cdir,
1828 struct dir_struct *dir,
1829 struct untracked_cache_dir *untracked,
1830 struct index_state *istate,
1831 struct strbuf *path,
1832 int check_only)
1834 const char *c_path;
1836 memset(cdir, 0, sizeof(*cdir));
1837 cdir->untracked = untracked;
1838 if (valid_cached_dir(dir, untracked, istate, path, check_only))
1839 return 0;
1840 c_path = path->len ? path->buf : ".";
1841 cdir->fdir = opendir(c_path);
1842 if (!cdir->fdir)
1843 warning_errno(_("could not open directory '%s'"), c_path);
1844 if (dir->untracked) {
1845 invalidate_directory(dir->untracked, untracked);
1846 dir->untracked->dir_opened++;
1848 if (!cdir->fdir)
1849 return -1;
1850 return 0;
1853 static int read_cached_dir(struct cached_dir *cdir)
1855 if (cdir->fdir) {
1856 cdir->de = readdir(cdir->fdir);
1857 if (!cdir->de)
1858 return -1;
1859 return 0;
1861 while (cdir->nr_dirs < cdir->untracked->dirs_nr) {
1862 struct untracked_cache_dir *d = cdir->untracked->dirs[cdir->nr_dirs];
1863 if (!d->recurse) {
1864 cdir->nr_dirs++;
1865 continue;
1867 cdir->ucd = d;
1868 cdir->nr_dirs++;
1869 return 0;
1871 cdir->ucd = NULL;
1872 if (cdir->nr_files < cdir->untracked->untracked_nr) {
1873 struct untracked_cache_dir *d = cdir->untracked;
1874 cdir->file = d->untracked[cdir->nr_files++];
1875 return 0;
1877 return -1;
1880 static void close_cached_dir(struct cached_dir *cdir)
1882 if (cdir->fdir)
1883 closedir(cdir->fdir);
1885 * We have gone through this directory and found no untracked
1886 * entries. Mark it valid.
1888 if (cdir->untracked) {
1889 cdir->untracked->valid = 1;
1890 cdir->untracked->recurse = 1;
1895 * Read a directory tree. We currently ignore anything but
1896 * directories, regular files and symlinks. That's because git
1897 * doesn't handle them at all yet. Maybe that will change some
1898 * day.
1900 * Also, we ignore the name ".git" (even if it is not a directory).
1901 * That likely will not change.
1903 * If 'stop_at_first_file' is specified, 'path_excluded' is returned
1904 * to signal that a file was found. This is the least significant value that
1905 * indicates that a file was encountered that does not depend on the order of
1906 * whether an untracked or exluded path was encountered first.
1908 * Returns the most significant path_treatment value encountered in the scan.
1909 * If 'stop_at_first_file' is specified, `path_excluded` is the most
1910 * significant path_treatment value that will be returned.
1913 static enum path_treatment read_directory_recursive(struct dir_struct *dir,
1914 struct index_state *istate, const char *base, int baselen,
1915 struct untracked_cache_dir *untracked, int check_only,
1916 int stop_at_first_file, const struct pathspec *pathspec)
1918 struct cached_dir cdir;
1919 enum path_treatment state, subdir_state, dir_state = path_none;
1920 struct strbuf path = STRBUF_INIT;
1922 strbuf_add(&path, base, baselen);
1924 if (open_cached_dir(&cdir, dir, untracked, istate, &path, check_only))
1925 goto out;
1927 if (untracked)
1928 untracked->check_only = !!check_only;
1930 while (!read_cached_dir(&cdir)) {
1931 /* check how the file or directory should be treated */
1932 state = treat_path(dir, untracked, &cdir, istate, &path,
1933 baselen, pathspec);
1935 if (state > dir_state)
1936 dir_state = state;
1938 /* recurse into subdir if instructed by treat_path */
1939 if ((state == path_recurse) ||
1940 ((state == path_untracked) &&
1941 (dir->flags & DIR_SHOW_IGNORED_TOO) &&
1942 (get_dtype(cdir.de, istate, path.buf, path.len) == DT_DIR))) {
1943 struct untracked_cache_dir *ud;
1944 ud = lookup_untracked(dir->untracked, untracked,
1945 path.buf + baselen,
1946 path.len - baselen);
1947 subdir_state =
1948 read_directory_recursive(dir, istate, path.buf,
1949 path.len, ud,
1950 check_only, stop_at_first_file, pathspec);
1951 if (subdir_state > dir_state)
1952 dir_state = subdir_state;
1955 if (check_only) {
1956 if (stop_at_first_file) {
1958 * If stopping at first file, then
1959 * signal that a file was found by
1960 * returning `path_excluded`. This is
1961 * to return a consistent value
1962 * regardless of whether an ignored or
1963 * excluded file happened to be
1964 * encountered 1st.
1966 * In current usage, the
1967 * `stop_at_first_file` is passed when
1968 * an ancestor directory has matched
1969 * an exclude pattern, so any found
1970 * files will be excluded.
1972 if (dir_state >= path_excluded) {
1973 dir_state = path_excluded;
1974 break;
1978 /* abort early if maximum state has been reached */
1979 if (dir_state == path_untracked) {
1980 if (cdir.fdir)
1981 add_untracked(untracked, path.buf + baselen);
1982 break;
1984 /* skip the dir_add_* part */
1985 continue;
1988 /* add the path to the appropriate result list */
1989 switch (state) {
1990 case path_excluded:
1991 if (dir->flags & DIR_SHOW_IGNORED)
1992 dir_add_name(dir, istate, path.buf, path.len);
1993 else if ((dir->flags & DIR_SHOW_IGNORED_TOO) ||
1994 ((dir->flags & DIR_COLLECT_IGNORED) &&
1995 exclude_matches_pathspec(path.buf, path.len,
1996 pathspec)))
1997 dir_add_ignored(dir, istate, path.buf, path.len);
1998 break;
2000 case path_untracked:
2001 if (dir->flags & DIR_SHOW_IGNORED)
2002 break;
2003 dir_add_name(dir, istate, path.buf, path.len);
2004 if (cdir.fdir)
2005 add_untracked(untracked, path.buf + baselen);
2006 break;
2008 default:
2009 break;
2012 close_cached_dir(&cdir);
2013 out:
2014 strbuf_release(&path);
2016 return dir_state;
2019 int cmp_dir_entry(const void *p1, const void *p2)
2021 const struct dir_entry *e1 = *(const struct dir_entry **)p1;
2022 const struct dir_entry *e2 = *(const struct dir_entry **)p2;
2024 return name_compare(e1->name, e1->len, e2->name, e2->len);
2027 /* check if *out lexically strictly contains *in */
2028 int check_dir_entry_contains(const struct dir_entry *out, const struct dir_entry *in)
2030 return (out->len < in->len) &&
2031 (out->name[out->len - 1] == '/') &&
2032 !memcmp(out->name, in->name, out->len);
2035 static int treat_leading_path(struct dir_struct *dir,
2036 struct index_state *istate,
2037 const char *path, int len,
2038 const struct pathspec *pathspec)
2040 struct strbuf sb = STRBUF_INIT;
2041 int baselen, rc = 0;
2042 const char *cp;
2043 int old_flags = dir->flags;
2045 while (len && path[len - 1] == '/')
2046 len--;
2047 if (!len)
2048 return 1;
2049 baselen = 0;
2050 dir->flags &= ~DIR_SHOW_OTHER_DIRECTORIES;
2051 while (1) {
2052 cp = path + baselen + !!baselen;
2053 cp = memchr(cp, '/', path + len - cp);
2054 if (!cp)
2055 baselen = len;
2056 else
2057 baselen = cp - path;
2058 strbuf_setlen(&sb, 0);
2059 strbuf_add(&sb, path, baselen);
2060 if (!is_directory(sb.buf))
2061 break;
2062 if (simplify_away(sb.buf, sb.len, pathspec))
2063 break;
2064 if (treat_one_path(dir, NULL, istate, &sb, baselen, pathspec,
2065 DT_DIR, NULL) == path_none)
2066 break; /* do not recurse into it */
2067 if (len <= baselen) {
2068 rc = 1;
2069 break; /* finished checking */
2072 strbuf_release(&sb);
2073 dir->flags = old_flags;
2074 return rc;
2077 static const char *get_ident_string(void)
2079 static struct strbuf sb = STRBUF_INIT;
2080 struct utsname uts;
2082 if (sb.len)
2083 return sb.buf;
2084 if (uname(&uts) < 0)
2085 die_errno(_("failed to get kernel name and information"));
2086 strbuf_addf(&sb, "Location %s, system %s", get_git_work_tree(),
2087 uts.sysname);
2088 return sb.buf;
2091 static int ident_in_untracked(const struct untracked_cache *uc)
2094 * Previous git versions may have saved many NUL separated
2095 * strings in the "ident" field, but it is insane to manage
2096 * many locations, so just take care of the first one.
2099 return !strcmp(uc->ident.buf, get_ident_string());
2102 static void set_untracked_ident(struct untracked_cache *uc)
2104 strbuf_reset(&uc->ident);
2105 strbuf_addstr(&uc->ident, get_ident_string());
2108 * This strbuf used to contain a list of NUL separated
2109 * strings, so save NUL too for backward compatibility.
2111 strbuf_addch(&uc->ident, 0);
2114 static void new_untracked_cache(struct index_state *istate)
2116 struct untracked_cache *uc = xcalloc(1, sizeof(*uc));
2117 strbuf_init(&uc->ident, 100);
2118 uc->exclude_per_dir = ".gitignore";
2119 /* should be the same flags used by git-status */
2120 uc->dir_flags = DIR_SHOW_OTHER_DIRECTORIES | DIR_HIDE_EMPTY_DIRECTORIES;
2121 set_untracked_ident(uc);
2122 istate->untracked = uc;
2123 istate->cache_changed |= UNTRACKED_CHANGED;
2126 void add_untracked_cache(struct index_state *istate)
2128 if (!istate->untracked) {
2129 new_untracked_cache(istate);
2130 } else {
2131 if (!ident_in_untracked(istate->untracked)) {
2132 free_untracked_cache(istate->untracked);
2133 new_untracked_cache(istate);
2138 void remove_untracked_cache(struct index_state *istate)
2140 if (istate->untracked) {
2141 free_untracked_cache(istate->untracked);
2142 istate->untracked = NULL;
2143 istate->cache_changed |= UNTRACKED_CHANGED;
2147 static struct untracked_cache_dir *validate_untracked_cache(struct dir_struct *dir,
2148 int base_len,
2149 const struct pathspec *pathspec)
2151 struct untracked_cache_dir *root;
2152 static int untracked_cache_disabled = -1;
2154 if (!dir->untracked)
2155 return NULL;
2156 if (untracked_cache_disabled < 0)
2157 untracked_cache_disabled = git_env_bool("GIT_DISABLE_UNTRACKED_CACHE", 0);
2158 if (untracked_cache_disabled)
2159 return NULL;
2162 * We only support $GIT_DIR/info/exclude and core.excludesfile
2163 * as the global ignore rule files. Any other additions
2164 * (e.g. from command line) invalidate the cache. This
2165 * condition also catches running setup_standard_excludes()
2166 * before setting dir->untracked!
2168 if (dir->unmanaged_exclude_files)
2169 return NULL;
2172 * Optimize for the main use case only: whole-tree git
2173 * status. More work involved in treat_leading_path() if we
2174 * use cache on just a subset of the worktree. pathspec
2175 * support could make the matter even worse.
2177 if (base_len || (pathspec && pathspec->nr))
2178 return NULL;
2180 /* Different set of flags may produce different results */
2181 if (dir->flags != dir->untracked->dir_flags ||
2183 * See treat_directory(), case index_nonexistent. Without
2184 * this flag, we may need to also cache .git file content
2185 * for the resolve_gitlink_ref() call, which we don't.
2187 !(dir->flags & DIR_SHOW_OTHER_DIRECTORIES) ||
2188 /* We don't support collecting ignore files */
2189 (dir->flags & (DIR_SHOW_IGNORED | DIR_SHOW_IGNORED_TOO |
2190 DIR_COLLECT_IGNORED)))
2191 return NULL;
2194 * If we use .gitignore in the cache and now you change it to
2195 * .gitexclude, everything will go wrong.
2197 if (dir->exclude_per_dir != dir->untracked->exclude_per_dir &&
2198 strcmp(dir->exclude_per_dir, dir->untracked->exclude_per_dir))
2199 return NULL;
2202 * EXC_CMDL is not considered in the cache. If people set it,
2203 * skip the cache.
2205 if (dir->exclude_list_group[EXC_CMDL].nr)
2206 return NULL;
2208 if (!ident_in_untracked(dir->untracked)) {
2209 warning(_("untracked cache is disabled on this system or location"));
2210 return NULL;
2213 if (!dir->untracked->root) {
2214 const int len = sizeof(*dir->untracked->root);
2215 dir->untracked->root = xmalloc(len);
2216 memset(dir->untracked->root, 0, len);
2219 /* Validate $GIT_DIR/info/exclude and core.excludesfile */
2220 root = dir->untracked->root;
2221 if (!oideq(&dir->ss_info_exclude.oid,
2222 &dir->untracked->ss_info_exclude.oid)) {
2223 invalidate_gitignore(dir->untracked, root);
2224 dir->untracked->ss_info_exclude = dir->ss_info_exclude;
2226 if (!oideq(&dir->ss_excludes_file.oid,
2227 &dir->untracked->ss_excludes_file.oid)) {
2228 invalidate_gitignore(dir->untracked, root);
2229 dir->untracked->ss_excludes_file = dir->ss_excludes_file;
2232 /* Make sure this directory is not dropped out at saving phase */
2233 root->recurse = 1;
2234 return root;
2237 int read_directory(struct dir_struct *dir, struct index_state *istate,
2238 const char *path, int len, const struct pathspec *pathspec)
2240 struct untracked_cache_dir *untracked;
2242 trace_performance_enter();
2244 if (has_symlink_leading_path(path, len)) {
2245 trace_performance_leave("read directory %.*s", len, path);
2246 return dir->nr;
2249 untracked = validate_untracked_cache(dir, len, pathspec);
2250 if (!untracked)
2252 * make sure untracked cache code path is disabled,
2253 * e.g. prep_exclude()
2255 dir->untracked = NULL;
2256 if (!len || treat_leading_path(dir, istate, path, len, pathspec))
2257 read_directory_recursive(dir, istate, path, len, untracked, 0, 0, pathspec);
2258 QSORT(dir->entries, dir->nr, cmp_dir_entry);
2259 QSORT(dir->ignored, dir->ignored_nr, cmp_dir_entry);
2262 * If DIR_SHOW_IGNORED_TOO is set, read_directory_recursive() will
2263 * also pick up untracked contents of untracked dirs; by default
2264 * we discard these, but given DIR_KEEP_UNTRACKED_CONTENTS we do not.
2266 if ((dir->flags & DIR_SHOW_IGNORED_TOO) &&
2267 !(dir->flags & DIR_KEEP_UNTRACKED_CONTENTS)) {
2268 int i, j;
2270 /* remove from dir->entries untracked contents of untracked dirs */
2271 for (i = j = 0; j < dir->nr; j++) {
2272 if (i &&
2273 check_dir_entry_contains(dir->entries[i - 1], dir->entries[j])) {
2274 FREE_AND_NULL(dir->entries[j]);
2275 } else {
2276 dir->entries[i++] = dir->entries[j];
2280 dir->nr = i;
2283 trace_performance_leave("read directory %.*s", len, path);
2284 if (dir->untracked) {
2285 static int force_untracked_cache = -1;
2286 static struct trace_key trace_untracked_stats = TRACE_KEY_INIT(UNTRACKED_STATS);
2288 if (force_untracked_cache < 0)
2289 force_untracked_cache =
2290 git_env_bool("GIT_FORCE_UNTRACKED_CACHE", 0);
2291 trace_printf_key(&trace_untracked_stats,
2292 "node creation: %u\n"
2293 "gitignore invalidation: %u\n"
2294 "directory invalidation: %u\n"
2295 "opendir: %u\n",
2296 dir->untracked->dir_created,
2297 dir->untracked->gitignore_invalidated,
2298 dir->untracked->dir_invalidated,
2299 dir->untracked->dir_opened);
2300 if (force_untracked_cache &&
2301 dir->untracked == istate->untracked &&
2302 (dir->untracked->dir_opened ||
2303 dir->untracked->gitignore_invalidated ||
2304 dir->untracked->dir_invalidated))
2305 istate->cache_changed |= UNTRACKED_CHANGED;
2306 if (dir->untracked != istate->untracked) {
2307 FREE_AND_NULL(dir->untracked);
2310 return dir->nr;
2313 int file_exists(const char *f)
2315 struct stat sb;
2316 return lstat(f, &sb) == 0;
2319 static int cmp_icase(char a, char b)
2321 if (a == b)
2322 return 0;
2323 if (ignore_case)
2324 return toupper(a) - toupper(b);
2325 return a - b;
2329 * Given two normalized paths (a trailing slash is ok), if subdir is
2330 * outside dir, return -1. Otherwise return the offset in subdir that
2331 * can be used as relative path to dir.
2333 int dir_inside_of(const char *subdir, const char *dir)
2335 int offset = 0;
2337 assert(dir && subdir && *dir && *subdir);
2339 while (*dir && *subdir && !cmp_icase(*dir, *subdir)) {
2340 dir++;
2341 subdir++;
2342 offset++;
2345 /* hel[p]/me vs hel[l]/yeah */
2346 if (*dir && *subdir)
2347 return -1;
2349 if (!*subdir)
2350 return !*dir ? offset : -1; /* same dir */
2352 /* foo/[b]ar vs foo/[] */
2353 if (is_dir_sep(dir[-1]))
2354 return is_dir_sep(subdir[-1]) ? offset : -1;
2356 /* foo[/]bar vs foo[] */
2357 return is_dir_sep(*subdir) ? offset + 1 : -1;
2360 int is_inside_dir(const char *dir)
2362 char *cwd;
2363 int rc;
2365 if (!dir)
2366 return 0;
2368 cwd = xgetcwd();
2369 rc = (dir_inside_of(cwd, dir) >= 0);
2370 free(cwd);
2371 return rc;
2374 int is_empty_dir(const char *path)
2376 DIR *dir = opendir(path);
2377 struct dirent *e;
2378 int ret = 1;
2380 if (!dir)
2381 return 0;
2383 while ((e = readdir(dir)) != NULL)
2384 if (!is_dot_or_dotdot(e->d_name)) {
2385 ret = 0;
2386 break;
2389 closedir(dir);
2390 return ret;
2393 static int remove_dir_recurse(struct strbuf *path, int flag, int *kept_up)
2395 DIR *dir;
2396 struct dirent *e;
2397 int ret = 0, original_len = path->len, len, kept_down = 0;
2398 int only_empty = (flag & REMOVE_DIR_EMPTY_ONLY);
2399 int keep_toplevel = (flag & REMOVE_DIR_KEEP_TOPLEVEL);
2400 struct object_id submodule_head;
2402 if ((flag & REMOVE_DIR_KEEP_NESTED_GIT) &&
2403 !resolve_gitlink_ref(path->buf, "HEAD", &submodule_head)) {
2404 /* Do not descend and nuke a nested git work tree. */
2405 if (kept_up)
2406 *kept_up = 1;
2407 return 0;
2410 flag &= ~REMOVE_DIR_KEEP_TOPLEVEL;
2411 dir = opendir(path->buf);
2412 if (!dir) {
2413 if (errno == ENOENT)
2414 return keep_toplevel ? -1 : 0;
2415 else if (errno == EACCES && !keep_toplevel)
2417 * An empty dir could be removable even if it
2418 * is unreadable:
2420 return rmdir(path->buf);
2421 else
2422 return -1;
2424 strbuf_complete(path, '/');
2426 len = path->len;
2427 while ((e = readdir(dir)) != NULL) {
2428 struct stat st;
2429 if (is_dot_or_dotdot(e->d_name))
2430 continue;
2432 strbuf_setlen(path, len);
2433 strbuf_addstr(path, e->d_name);
2434 if (lstat(path->buf, &st)) {
2435 if (errno == ENOENT)
2437 * file disappeared, which is what we
2438 * wanted anyway
2440 continue;
2441 /* fall thru */
2442 } else if (S_ISDIR(st.st_mode)) {
2443 if (!remove_dir_recurse(path, flag, &kept_down))
2444 continue; /* happy */
2445 } else if (!only_empty &&
2446 (!unlink(path->buf) || errno == ENOENT)) {
2447 continue; /* happy, too */
2450 /* path too long, stat fails, or non-directory still exists */
2451 ret = -1;
2452 break;
2454 closedir(dir);
2456 strbuf_setlen(path, original_len);
2457 if (!ret && !keep_toplevel && !kept_down)
2458 ret = (!rmdir(path->buf) || errno == ENOENT) ? 0 : -1;
2459 else if (kept_up)
2461 * report the uplevel that it is not an error that we
2462 * did not rmdir() our directory.
2464 *kept_up = !ret;
2465 return ret;
2468 int remove_dir_recursively(struct strbuf *path, int flag)
2470 return remove_dir_recurse(path, flag, NULL);
2473 static GIT_PATH_FUNC(git_path_info_exclude, "info/exclude")
2475 void setup_standard_excludes(struct dir_struct *dir)
2477 dir->exclude_per_dir = ".gitignore";
2479 /* core.excludesfile defaulting to $XDG_CONFIG_HOME/git/ignore */
2480 if (!excludes_file)
2481 excludes_file = xdg_config_home("ignore");
2482 if (excludes_file && !access_or_warn(excludes_file, R_OK, 0))
2483 add_excludes_from_file_1(dir, excludes_file,
2484 dir->untracked ? &dir->ss_excludes_file : NULL);
2486 /* per repository user preference */
2487 if (startup_info->have_repository) {
2488 const char *path = git_path_info_exclude();
2489 if (!access_or_warn(path, R_OK, 0))
2490 add_excludes_from_file_1(dir, path,
2491 dir->untracked ? &dir->ss_info_exclude : NULL);
2495 int remove_path(const char *name)
2497 char *slash;
2499 if (unlink(name) && !is_missing_file_error(errno))
2500 return -1;
2502 slash = strrchr(name, '/');
2503 if (slash) {
2504 char *dirs = xstrdup(name);
2505 slash = dirs + (slash - name);
2506 do {
2507 *slash = '\0';
2508 } while (rmdir(dirs) == 0 && (slash = strrchr(dirs, '/')));
2509 free(dirs);
2511 return 0;
2515 * Frees memory within dir which was allocated for exclude lists and
2516 * the exclude_stack. Does not free dir itself.
2518 void clear_directory(struct dir_struct *dir)
2520 int i, j;
2521 struct exclude_list_group *group;
2522 struct exclude_list *el;
2523 struct exclude_stack *stk;
2525 for (i = EXC_CMDL; i <= EXC_FILE; i++) {
2526 group = &dir->exclude_list_group[i];
2527 for (j = 0; j < group->nr; j++) {
2528 el = &group->el[j];
2529 if (i == EXC_DIRS)
2530 free((char *)el->src);
2531 clear_exclude_list(el);
2533 free(group->el);
2536 stk = dir->exclude_stack;
2537 while (stk) {
2538 struct exclude_stack *prev = stk->prev;
2539 free(stk);
2540 stk = prev;
2542 strbuf_release(&dir->basebuf);
2545 struct ondisk_untracked_cache {
2546 struct stat_data info_exclude_stat;
2547 struct stat_data excludes_file_stat;
2548 uint32_t dir_flags;
2549 unsigned char info_exclude_sha1[20];
2550 unsigned char excludes_file_sha1[20];
2551 char exclude_per_dir[FLEX_ARRAY];
2554 #define ouc_offset(x) offsetof(struct ondisk_untracked_cache, x)
2555 #define ouc_size(len) (ouc_offset(exclude_per_dir) + len + 1)
2557 struct write_data {
2558 int index; /* number of written untracked_cache_dir */
2559 struct ewah_bitmap *check_only; /* from untracked_cache_dir */
2560 struct ewah_bitmap *valid; /* from untracked_cache_dir */
2561 struct ewah_bitmap *sha1_valid; /* set if exclude_sha1 is not null */
2562 struct strbuf out;
2563 struct strbuf sb_stat;
2564 struct strbuf sb_sha1;
2567 static void stat_data_to_disk(struct stat_data *to, const struct stat_data *from)
2569 to->sd_ctime.sec = htonl(from->sd_ctime.sec);
2570 to->sd_ctime.nsec = htonl(from->sd_ctime.nsec);
2571 to->sd_mtime.sec = htonl(from->sd_mtime.sec);
2572 to->sd_mtime.nsec = htonl(from->sd_mtime.nsec);
2573 to->sd_dev = htonl(from->sd_dev);
2574 to->sd_ino = htonl(from->sd_ino);
2575 to->sd_uid = htonl(from->sd_uid);
2576 to->sd_gid = htonl(from->sd_gid);
2577 to->sd_size = htonl(from->sd_size);
2580 static void write_one_dir(struct untracked_cache_dir *untracked,
2581 struct write_data *wd)
2583 struct stat_data stat_data;
2584 struct strbuf *out = &wd->out;
2585 unsigned char intbuf[16];
2586 unsigned int intlen, value;
2587 int i = wd->index++;
2590 * untracked_nr should be reset whenever valid is clear, but
2591 * for safety..
2593 if (!untracked->valid) {
2594 untracked->untracked_nr = 0;
2595 untracked->check_only = 0;
2598 if (untracked->check_only)
2599 ewah_set(wd->check_only, i);
2600 if (untracked->valid) {
2601 ewah_set(wd->valid, i);
2602 stat_data_to_disk(&stat_data, &untracked->stat_data);
2603 strbuf_add(&wd->sb_stat, &stat_data, sizeof(stat_data));
2605 if (!is_null_oid(&untracked->exclude_oid)) {
2606 ewah_set(wd->sha1_valid, i);
2607 strbuf_add(&wd->sb_sha1, untracked->exclude_oid.hash,
2608 the_hash_algo->rawsz);
2611 intlen = encode_varint(untracked->untracked_nr, intbuf);
2612 strbuf_add(out, intbuf, intlen);
2614 /* skip non-recurse directories */
2615 for (i = 0, value = 0; i < untracked->dirs_nr; i++)
2616 if (untracked->dirs[i]->recurse)
2617 value++;
2618 intlen = encode_varint(value, intbuf);
2619 strbuf_add(out, intbuf, intlen);
2621 strbuf_add(out, untracked->name, strlen(untracked->name) + 1);
2623 for (i = 0; i < untracked->untracked_nr; i++)
2624 strbuf_add(out, untracked->untracked[i],
2625 strlen(untracked->untracked[i]) + 1);
2627 for (i = 0; i < untracked->dirs_nr; i++)
2628 if (untracked->dirs[i]->recurse)
2629 write_one_dir(untracked->dirs[i], wd);
2632 void write_untracked_extension(struct strbuf *out, struct untracked_cache *untracked)
2634 struct ondisk_untracked_cache *ouc;
2635 struct write_data wd;
2636 unsigned char varbuf[16];
2637 int varint_len;
2638 size_t len = strlen(untracked->exclude_per_dir);
2640 FLEX_ALLOC_MEM(ouc, exclude_per_dir, untracked->exclude_per_dir, len);
2641 stat_data_to_disk(&ouc->info_exclude_stat, &untracked->ss_info_exclude.stat);
2642 stat_data_to_disk(&ouc->excludes_file_stat, &untracked->ss_excludes_file.stat);
2643 hashcpy(ouc->info_exclude_sha1, untracked->ss_info_exclude.oid.hash);
2644 hashcpy(ouc->excludes_file_sha1, untracked->ss_excludes_file.oid.hash);
2645 ouc->dir_flags = htonl(untracked->dir_flags);
2647 varint_len = encode_varint(untracked->ident.len, varbuf);
2648 strbuf_add(out, varbuf, varint_len);
2649 strbuf_addbuf(out, &untracked->ident);
2651 strbuf_add(out, ouc, ouc_size(len));
2652 FREE_AND_NULL(ouc);
2654 if (!untracked->root) {
2655 varint_len = encode_varint(0, varbuf);
2656 strbuf_add(out, varbuf, varint_len);
2657 return;
2660 wd.index = 0;
2661 wd.check_only = ewah_new();
2662 wd.valid = ewah_new();
2663 wd.sha1_valid = ewah_new();
2664 strbuf_init(&wd.out, 1024);
2665 strbuf_init(&wd.sb_stat, 1024);
2666 strbuf_init(&wd.sb_sha1, 1024);
2667 write_one_dir(untracked->root, &wd);
2669 varint_len = encode_varint(wd.index, varbuf);
2670 strbuf_add(out, varbuf, varint_len);
2671 strbuf_addbuf(out, &wd.out);
2672 ewah_serialize_strbuf(wd.valid, out);
2673 ewah_serialize_strbuf(wd.check_only, out);
2674 ewah_serialize_strbuf(wd.sha1_valid, out);
2675 strbuf_addbuf(out, &wd.sb_stat);
2676 strbuf_addbuf(out, &wd.sb_sha1);
2677 strbuf_addch(out, '\0'); /* safe guard for string lists */
2679 ewah_free(wd.valid);
2680 ewah_free(wd.check_only);
2681 ewah_free(wd.sha1_valid);
2682 strbuf_release(&wd.out);
2683 strbuf_release(&wd.sb_stat);
2684 strbuf_release(&wd.sb_sha1);
2687 static void free_untracked(struct untracked_cache_dir *ucd)
2689 int i;
2690 if (!ucd)
2691 return;
2692 for (i = 0; i < ucd->dirs_nr; i++)
2693 free_untracked(ucd->dirs[i]);
2694 for (i = 0; i < ucd->untracked_nr; i++)
2695 free(ucd->untracked[i]);
2696 free(ucd->untracked);
2697 free(ucd->dirs);
2698 free(ucd);
2701 void free_untracked_cache(struct untracked_cache *uc)
2703 if (uc)
2704 free_untracked(uc->root);
2705 free(uc);
2708 struct read_data {
2709 int index;
2710 struct untracked_cache_dir **ucd;
2711 struct ewah_bitmap *check_only;
2712 struct ewah_bitmap *valid;
2713 struct ewah_bitmap *sha1_valid;
2714 const unsigned char *data;
2715 const unsigned char *end;
2718 static void stat_data_from_disk(struct stat_data *to, const unsigned char *data)
2720 memcpy(to, data, sizeof(*to));
2721 to->sd_ctime.sec = ntohl(to->sd_ctime.sec);
2722 to->sd_ctime.nsec = ntohl(to->sd_ctime.nsec);
2723 to->sd_mtime.sec = ntohl(to->sd_mtime.sec);
2724 to->sd_mtime.nsec = ntohl(to->sd_mtime.nsec);
2725 to->sd_dev = ntohl(to->sd_dev);
2726 to->sd_ino = ntohl(to->sd_ino);
2727 to->sd_uid = ntohl(to->sd_uid);
2728 to->sd_gid = ntohl(to->sd_gid);
2729 to->sd_size = ntohl(to->sd_size);
2732 static int read_one_dir(struct untracked_cache_dir **untracked_,
2733 struct read_data *rd)
2735 struct untracked_cache_dir ud, *untracked;
2736 const unsigned char *next, *data = rd->data, *end = rd->end;
2737 unsigned int value;
2738 int i, len;
2740 memset(&ud, 0, sizeof(ud));
2742 next = data;
2743 value = decode_varint(&next);
2744 if (next > end)
2745 return -1;
2746 ud.recurse = 1;
2747 ud.untracked_alloc = value;
2748 ud.untracked_nr = value;
2749 if (ud.untracked_nr)
2750 ALLOC_ARRAY(ud.untracked, ud.untracked_nr);
2751 data = next;
2753 next = data;
2754 ud.dirs_alloc = ud.dirs_nr = decode_varint(&next);
2755 if (next > end)
2756 return -1;
2757 ALLOC_ARRAY(ud.dirs, ud.dirs_nr);
2758 data = next;
2760 len = strlen((const char *)data);
2761 next = data + len + 1;
2762 if (next > rd->end)
2763 return -1;
2764 *untracked_ = untracked = xmalloc(st_add(sizeof(*untracked), len));
2765 memcpy(untracked, &ud, sizeof(ud));
2766 memcpy(untracked->name, data, len + 1);
2767 data = next;
2769 for (i = 0; i < untracked->untracked_nr; i++) {
2770 len = strlen((const char *)data);
2771 next = data + len + 1;
2772 if (next > rd->end)
2773 return -1;
2774 untracked->untracked[i] = xstrdup((const char*)data);
2775 data = next;
2778 rd->ucd[rd->index++] = untracked;
2779 rd->data = data;
2781 for (i = 0; i < untracked->dirs_nr; i++) {
2782 len = read_one_dir(untracked->dirs + i, rd);
2783 if (len < 0)
2784 return -1;
2786 return 0;
2789 static void set_check_only(size_t pos, void *cb)
2791 struct read_data *rd = cb;
2792 struct untracked_cache_dir *ud = rd->ucd[pos];
2793 ud->check_only = 1;
2796 static void read_stat(size_t pos, void *cb)
2798 struct read_data *rd = cb;
2799 struct untracked_cache_dir *ud = rd->ucd[pos];
2800 if (rd->data + sizeof(struct stat_data) > rd->end) {
2801 rd->data = rd->end + 1;
2802 return;
2804 stat_data_from_disk(&ud->stat_data, rd->data);
2805 rd->data += sizeof(struct stat_data);
2806 ud->valid = 1;
2809 static void read_oid(size_t pos, void *cb)
2811 struct read_data *rd = cb;
2812 struct untracked_cache_dir *ud = rd->ucd[pos];
2813 if (rd->data + the_hash_algo->rawsz > rd->end) {
2814 rd->data = rd->end + 1;
2815 return;
2817 hashcpy(ud->exclude_oid.hash, rd->data);
2818 rd->data += the_hash_algo->rawsz;
2821 static void load_oid_stat(struct oid_stat *oid_stat, const unsigned char *data,
2822 const unsigned char *sha1)
2824 stat_data_from_disk(&oid_stat->stat, data);
2825 hashcpy(oid_stat->oid.hash, sha1);
2826 oid_stat->valid = 1;
2829 struct untracked_cache *read_untracked_extension(const void *data, unsigned long sz)
2831 struct untracked_cache *uc;
2832 struct read_data rd;
2833 const unsigned char *next = data, *end = (const unsigned char *)data + sz;
2834 const char *ident;
2835 int ident_len;
2836 ssize_t len;
2837 const char *exclude_per_dir;
2839 if (sz <= 1 || end[-1] != '\0')
2840 return NULL;
2841 end--;
2843 ident_len = decode_varint(&next);
2844 if (next + ident_len > end)
2845 return NULL;
2846 ident = (const char *)next;
2847 next += ident_len;
2849 if (next + ouc_size(0) > end)
2850 return NULL;
2852 uc = xcalloc(1, sizeof(*uc));
2853 strbuf_init(&uc->ident, ident_len);
2854 strbuf_add(&uc->ident, ident, ident_len);
2855 load_oid_stat(&uc->ss_info_exclude,
2856 next + ouc_offset(info_exclude_stat),
2857 next + ouc_offset(info_exclude_sha1));
2858 load_oid_stat(&uc->ss_excludes_file,
2859 next + ouc_offset(excludes_file_stat),
2860 next + ouc_offset(excludes_file_sha1));
2861 uc->dir_flags = get_be32(next + ouc_offset(dir_flags));
2862 exclude_per_dir = (const char *)next + ouc_offset(exclude_per_dir);
2863 uc->exclude_per_dir = xstrdup(exclude_per_dir);
2864 /* NUL after exclude_per_dir is covered by sizeof(*ouc) */
2865 next += ouc_size(strlen(exclude_per_dir));
2866 if (next >= end)
2867 goto done2;
2869 len = decode_varint(&next);
2870 if (next > end || len == 0)
2871 goto done2;
2873 rd.valid = ewah_new();
2874 rd.check_only = ewah_new();
2875 rd.sha1_valid = ewah_new();
2876 rd.data = next;
2877 rd.end = end;
2878 rd.index = 0;
2879 ALLOC_ARRAY(rd.ucd, len);
2881 if (read_one_dir(&uc->root, &rd) || rd.index != len)
2882 goto done;
2884 next = rd.data;
2885 len = ewah_read_mmap(rd.valid, next, end - next);
2886 if (len < 0)
2887 goto done;
2889 next += len;
2890 len = ewah_read_mmap(rd.check_only, next, end - next);
2891 if (len < 0)
2892 goto done;
2894 next += len;
2895 len = ewah_read_mmap(rd.sha1_valid, next, end - next);
2896 if (len < 0)
2897 goto done;
2899 ewah_each_bit(rd.check_only, set_check_only, &rd);
2900 rd.data = next + len;
2901 ewah_each_bit(rd.valid, read_stat, &rd);
2902 ewah_each_bit(rd.sha1_valid, read_oid, &rd);
2903 next = rd.data;
2905 done:
2906 free(rd.ucd);
2907 ewah_free(rd.valid);
2908 ewah_free(rd.check_only);
2909 ewah_free(rd.sha1_valid);
2910 done2:
2911 if (next != end) {
2912 free_untracked_cache(uc);
2913 uc = NULL;
2915 return uc;
2918 static void invalidate_one_directory(struct untracked_cache *uc,
2919 struct untracked_cache_dir *ucd)
2921 uc->dir_invalidated++;
2922 ucd->valid = 0;
2923 ucd->untracked_nr = 0;
2927 * Normally when an entry is added or removed from a directory,
2928 * invalidating that directory is enough. No need to touch its
2929 * ancestors. When a directory is shown as "foo/bar/" in git-status
2930 * however, deleting or adding an entry may have cascading effect.
2932 * Say the "foo/bar/file" has become untracked, we need to tell the
2933 * untracked_cache_dir of "foo" that "bar/" is not an untracked
2934 * directory any more (because "bar" is managed by foo as an untracked
2935 * "file").
2937 * Similarly, if "foo/bar/file" moves from untracked to tracked and it
2938 * was the last untracked entry in the entire "foo", we should show
2939 * "foo/" instead. Which means we have to invalidate past "bar" up to
2940 * "foo".
2942 * This function traverses all directories from root to leaf. If there
2943 * is a chance of one of the above cases happening, we invalidate back
2944 * to root. Otherwise we just invalidate the leaf. There may be a more
2945 * sophisticated way than checking for SHOW_OTHER_DIRECTORIES to
2946 * detect these cases and avoid unnecessary invalidation, for example,
2947 * checking for the untracked entry named "bar/" in "foo", but for now
2948 * stick to something safe and simple.
2950 static int invalidate_one_component(struct untracked_cache *uc,
2951 struct untracked_cache_dir *dir,
2952 const char *path, int len)
2954 const char *rest = strchr(path, '/');
2956 if (rest) {
2957 int component_len = rest - path;
2958 struct untracked_cache_dir *d =
2959 lookup_untracked(uc, dir, path, component_len);
2960 int ret =
2961 invalidate_one_component(uc, d, rest + 1,
2962 len - (component_len + 1));
2963 if (ret)
2964 invalidate_one_directory(uc, dir);
2965 return ret;
2968 invalidate_one_directory(uc, dir);
2969 return uc->dir_flags & DIR_SHOW_OTHER_DIRECTORIES;
2972 void untracked_cache_invalidate_path(struct index_state *istate,
2973 const char *path, int safe_path)
2975 if (!istate->untracked || !istate->untracked->root)
2976 return;
2977 if (!safe_path && !verify_path(path, 0))
2978 return;
2979 invalidate_one_component(istate->untracked, istate->untracked->root,
2980 path, strlen(path));
2983 void untracked_cache_remove_from_index(struct index_state *istate,
2984 const char *path)
2986 untracked_cache_invalidate_path(istate, path, 1);
2989 void untracked_cache_add_to_index(struct index_state *istate,
2990 const char *path)
2992 untracked_cache_invalidate_path(istate, path, 1);
2995 static void connect_wt_gitdir_in_nested(const char *sub_worktree,
2996 const char *sub_gitdir)
2998 int i;
2999 struct repository subrepo;
3000 struct strbuf sub_wt = STRBUF_INIT;
3001 struct strbuf sub_gd = STRBUF_INIT;
3003 const struct submodule *sub;
3005 /* If the submodule has no working tree, we can ignore it. */
3006 if (repo_init(&subrepo, sub_gitdir, sub_worktree))
3007 return;
3009 if (repo_read_index(&subrepo) < 0)
3010 die(_("index file corrupt in repo %s"), subrepo.gitdir);
3012 for (i = 0; i < subrepo.index->cache_nr; i++) {
3013 const struct cache_entry *ce = subrepo.index->cache[i];
3015 if (!S_ISGITLINK(ce->ce_mode))
3016 continue;
3018 while (i + 1 < subrepo.index->cache_nr &&
3019 !strcmp(ce->name, subrepo.index->cache[i + 1]->name))
3021 * Skip entries with the same name in different stages
3022 * to make sure an entry is returned only once.
3024 i++;
3026 sub = submodule_from_path(&subrepo, &null_oid, ce->name);
3027 if (!sub || !is_submodule_active(&subrepo, ce->name))
3028 /* .gitmodules broken or inactive sub */
3029 continue;
3031 strbuf_reset(&sub_wt);
3032 strbuf_reset(&sub_gd);
3033 strbuf_addf(&sub_wt, "%s/%s", sub_worktree, sub->path);
3034 strbuf_addf(&sub_gd, "%s/modules/%s", sub_gitdir, sub->name);
3036 connect_work_tree_and_git_dir(sub_wt.buf, sub_gd.buf, 1);
3038 strbuf_release(&sub_wt);
3039 strbuf_release(&sub_gd);
3040 repo_clear(&subrepo);
3043 void connect_work_tree_and_git_dir(const char *work_tree_,
3044 const char *git_dir_,
3045 int recurse_into_nested)
3047 struct strbuf gitfile_sb = STRBUF_INIT;
3048 struct strbuf cfg_sb = STRBUF_INIT;
3049 struct strbuf rel_path = STRBUF_INIT;
3050 char *git_dir, *work_tree;
3052 /* Prepare .git file */
3053 strbuf_addf(&gitfile_sb, "%s/.git", work_tree_);
3054 if (safe_create_leading_directories_const(gitfile_sb.buf))
3055 die(_("could not create directories for %s"), gitfile_sb.buf);
3057 /* Prepare config file */
3058 strbuf_addf(&cfg_sb, "%s/config", git_dir_);
3059 if (safe_create_leading_directories_const(cfg_sb.buf))
3060 die(_("could not create directories for %s"), cfg_sb.buf);
3062 git_dir = real_pathdup(git_dir_, 1);
3063 work_tree = real_pathdup(work_tree_, 1);
3065 /* Write .git file */
3066 write_file(gitfile_sb.buf, "gitdir: %s",
3067 relative_path(git_dir, work_tree, &rel_path));
3068 /* Update core.worktree setting */
3069 git_config_set_in_file(cfg_sb.buf, "core.worktree",
3070 relative_path(work_tree, git_dir, &rel_path));
3072 strbuf_release(&gitfile_sb);
3073 strbuf_release(&cfg_sb);
3074 strbuf_release(&rel_path);
3076 if (recurse_into_nested)
3077 connect_wt_gitdir_in_nested(work_tree, git_dir);
3079 free(work_tree);
3080 free(git_dir);
3084 * Migrate the git directory of the given path from old_git_dir to new_git_dir.
3086 void relocate_gitdir(const char *path, const char *old_git_dir, const char *new_git_dir)
3088 if (rename(old_git_dir, new_git_dir) < 0)
3089 die_errno(_("could not migrate git directory from '%s' to '%s'"),
3090 old_git_dir, new_git_dir);
3092 connect_work_tree_and_git_dir(path, new_git_dir, 0);